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Diffstat (limited to '')
57 files changed, 38796 insertions, 0 deletions
diff --git a/external/unbound/util/alloc.c b/external/unbound/util/alloc.c new file mode 100644 index 000000000..4b81beb4c --- /dev/null +++ b/external/unbound/util/alloc.c @@ -0,0 +1,642 @@ +/* + * util/alloc.c - memory allocation service. + * + * Copyright (c) 2007, NLnet Labs. All rights reserved. + * + * This software is open source. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * Neither the name of the NLNET LABS nor the names of its contributors may + * be used to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/** + * \file + * + * This file contains memory allocation functions. + */ + +#include "config.h" +#include "util/alloc.h" +#include "util/regional.h" +#include "util/data/packed_rrset.h" +#include "util/fptr_wlist.h" + +/** custom size of cached regional blocks */ +#define ALLOC_REG_SIZE 16384 +/** number of bits for ID part of uint64, rest for number of threads. */ +#define THRNUM_SHIFT 48 /* for 65k threads, 2^48 rrsets per thr. */ + +/** setup new special type */ +static void +alloc_setup_special(alloc_special_t* t) +{ + memset(t, 0, sizeof(*t)); + lock_rw_init(&t->entry.lock); + t->entry.key = t; +} + +/** prealloc some entries in the cache. To minimize contention. + * Result is 1 lock per alloc_max newly created entries. + * @param alloc: the structure to fill up. + */ +static void +prealloc(struct alloc_cache* alloc) +{ + alloc_special_t* p; + int i; + for(i=0; i<ALLOC_SPECIAL_MAX; i++) { + if(!(p = (alloc_special_t*)malloc(sizeof(alloc_special_t)))) { + log_err("prealloc: out of memory"); + return; + } + alloc_setup_special(p); + alloc_set_special_next(p, alloc->quar); + alloc->quar = p; + alloc->num_quar++; + } +} + +/** prealloc region blocks */ +static void +prealloc_blocks(struct alloc_cache* alloc, size_t num) +{ + size_t i; + struct regional* r; + for(i=0; i<num; i++) { + r = regional_create_custom(ALLOC_REG_SIZE); + if(!r) { + log_err("prealloc blocks: out of memory"); + return; + } + r->next = (char*)alloc->reg_list; + alloc->reg_list = r; + alloc->num_reg_blocks ++; + } +} + +void +alloc_init(struct alloc_cache* alloc, struct alloc_cache* super, + int thread_num) +{ + memset(alloc, 0, sizeof(*alloc)); + alloc->super = super; + alloc->thread_num = thread_num; + alloc->next_id = (uint64_t)thread_num; /* in steps, so that type */ + alloc->next_id <<= THRNUM_SHIFT; /* of *_id is used. */ + alloc->last_id = 1; /* so no 64bit constants, */ + alloc->last_id <<= THRNUM_SHIFT; /* or implicit 'int' ops. */ + alloc->last_id -= 1; /* for compiler portability. */ + alloc->last_id |= alloc->next_id; + alloc->next_id += 1; /* because id=0 is special. */ + alloc->max_reg_blocks = 100; + alloc->num_reg_blocks = 0; + alloc->reg_list = NULL; + alloc->cleanup = NULL; + alloc->cleanup_arg = NULL; + if(alloc->super) + prealloc_blocks(alloc, alloc->max_reg_blocks); + if(!alloc->super) { + lock_quick_init(&alloc->lock); + lock_protect(&alloc->lock, alloc, sizeof(*alloc)); + } +} + +void +alloc_clear(struct alloc_cache* alloc) +{ + alloc_special_t* p, *np; + struct regional* r, *nr; + if(!alloc) + return; + if(!alloc->super) { + lock_quick_destroy(&alloc->lock); + } + if(alloc->super && alloc->quar) { + /* push entire list into super */ + p = alloc->quar; + while(alloc_special_next(p)) /* find last */ + p = alloc_special_next(p); + lock_quick_lock(&alloc->super->lock); + alloc_set_special_next(p, alloc->super->quar); + alloc->super->quar = alloc->quar; + alloc->super->num_quar += alloc->num_quar; + lock_quick_unlock(&alloc->super->lock); + } else { + /* free */ + p = alloc->quar; + while(p) { + np = alloc_special_next(p); + /* deinit special type */ + lock_rw_destroy(&p->entry.lock); + free(p); + p = np; + } + } + alloc->quar = 0; + alloc->num_quar = 0; + r = alloc->reg_list; + while(r) { + nr = (struct regional*)r->next; + free(r); + r = nr; + } + alloc->reg_list = NULL; + alloc->num_reg_blocks = 0; +} + +uint64_t +alloc_get_id(struct alloc_cache* alloc) +{ + uint64_t id = alloc->next_id++; + if(id == alloc->last_id) { + log_warn("rrset alloc: out of 64bit ids. Clearing cache."); + fptr_ok(fptr_whitelist_alloc_cleanup(alloc->cleanup)); + (*alloc->cleanup)(alloc->cleanup_arg); + + /* start back at first number */ /* like in alloc_init*/ + alloc->next_id = (uint64_t)alloc->thread_num; + alloc->next_id <<= THRNUM_SHIFT; /* in steps for comp. */ + alloc->next_id += 1; /* portability. */ + /* and generate new and safe id */ + id = alloc->next_id++; + } + return id; +} + +alloc_special_t* +alloc_special_obtain(struct alloc_cache* alloc) +{ + alloc_special_t* p; + log_assert(alloc); + /* see if in local cache */ + if(alloc->quar) { + p = alloc->quar; + alloc->quar = alloc_special_next(p); + alloc->num_quar--; + p->id = alloc_get_id(alloc); + return p; + } + /* see if in global cache */ + if(alloc->super) { + /* could maybe grab alloc_max/2 entries in one go, + * but really, isn't that just as fast as this code? */ + lock_quick_lock(&alloc->super->lock); + if((p = alloc->super->quar)) { + alloc->super->quar = alloc_special_next(p); + alloc->super->num_quar--; + } + lock_quick_unlock(&alloc->super->lock); + if(p) { + p->id = alloc_get_id(alloc); + return p; + } + } + /* allocate new */ + prealloc(alloc); + if(!(p = (alloc_special_t*)malloc(sizeof(alloc_special_t)))) { + log_err("alloc_special_obtain: out of memory"); + return NULL; + } + alloc_setup_special(p); + p->id = alloc_get_id(alloc); + return p; +} + +/** push mem and some more items to the super */ +static void +pushintosuper(struct alloc_cache* alloc, alloc_special_t* mem) +{ + int i; + alloc_special_t *p = alloc->quar; + log_assert(p); + log_assert(alloc && alloc->super && + alloc->num_quar >= ALLOC_SPECIAL_MAX); + /* push ALLOC_SPECIAL_MAX/2 after mem */ + alloc_set_special_next(mem, alloc->quar); + for(i=1; i<ALLOC_SPECIAL_MAX/2; i++) { + p = alloc_special_next(p); + } + alloc->quar = alloc_special_next(p); + alloc->num_quar -= ALLOC_SPECIAL_MAX/2; + + /* dump mem+list into the super quar list */ + lock_quick_lock(&alloc->super->lock); + alloc_set_special_next(p, alloc->super->quar); + alloc->super->quar = mem; + alloc->super->num_quar += ALLOC_SPECIAL_MAX/2 + 1; + lock_quick_unlock(&alloc->super->lock); + /* so 1 lock per mem+alloc/2 deletes */ +} + +void +alloc_special_release(struct alloc_cache* alloc, alloc_special_t* mem) +{ + log_assert(alloc); + if(!mem) + return; + if(!alloc->super) { + lock_quick_lock(&alloc->lock); /* superalloc needs locking */ + } + + alloc_special_clean(mem); + if(alloc->super && alloc->num_quar >= ALLOC_SPECIAL_MAX) { + /* push it to the super structure */ + pushintosuper(alloc, mem); + return; + } + + alloc_set_special_next(mem, alloc->quar); + alloc->quar = mem; + alloc->num_quar++; + if(!alloc->super) { + lock_quick_unlock(&alloc->lock); + } +} + +void +alloc_stats(struct alloc_cache* alloc) +{ + log_info("%salloc: %d in cache, %d blocks.", alloc->super?"":"sup", + (int)alloc->num_quar, (int)alloc->num_reg_blocks); +} + +size_t alloc_get_mem(struct alloc_cache* alloc) +{ + alloc_special_t* p; + size_t s = sizeof(*alloc); + if(!alloc->super) { + lock_quick_lock(&alloc->lock); /* superalloc needs locking */ + } + s += sizeof(alloc_special_t) * alloc->num_quar; + for(p = alloc->quar; p; p = alloc_special_next(p)) { + s += lock_get_mem(&p->entry.lock); + } + s += alloc->num_reg_blocks * ALLOC_REG_SIZE; + if(!alloc->super) { + lock_quick_unlock(&alloc->lock); + } + return s; +} + +struct regional* +alloc_reg_obtain(struct alloc_cache* alloc) +{ + if(alloc->num_reg_blocks > 0) { + struct regional* r = alloc->reg_list; + alloc->reg_list = (struct regional*)r->next; + r->next = NULL; + alloc->num_reg_blocks--; + return r; + } + return regional_create_custom(ALLOC_REG_SIZE); +} + +void +alloc_reg_release(struct alloc_cache* alloc, struct regional* r) +{ + if(alloc->num_reg_blocks >= alloc->max_reg_blocks) { + regional_destroy(r); + return; + } + if(!r) return; + regional_free_all(r); + log_assert(r->next == NULL); + r->next = (char*)alloc->reg_list; + alloc->reg_list = r; + alloc->num_reg_blocks++; +} + +void +alloc_set_id_cleanup(struct alloc_cache* alloc, void (*cleanup)(void*), + void* arg) +{ + alloc->cleanup = cleanup; + alloc->cleanup_arg = arg; +} + +/** global debug value to keep track of total memory mallocs */ +size_t unbound_mem_alloc = 0; +/** global debug value to keep track of total memory frees */ +size_t unbound_mem_freed = 0; +#ifdef UNBOUND_ALLOC_STATS +/** special value to know if the memory is being tracked */ +uint64_t mem_special = (uint64_t)0xfeed43327766abcdLL; +#ifdef malloc +#undef malloc +#endif +/** malloc with stats */ +void *unbound_stat_malloc(size_t size) +{ + void* res; + if(size == 0) size = 1; + res = malloc(size+16); + if(!res) return NULL; + unbound_mem_alloc += size; + log_info("stat %p=malloc(%u)", res+16, (unsigned)size); + memcpy(res, &size, sizeof(size)); + memcpy(res+8, &mem_special, sizeof(mem_special)); + return res+16; +} +#ifdef calloc +#undef calloc +#endif +/** calloc with stats */ +void *unbound_stat_calloc(size_t nmemb, size_t size) +{ + size_t s = (nmemb*size==0)?(size_t)1:nmemb*size; + void* res = calloc(1, s+16); + if(!res) return NULL; + log_info("stat %p=calloc(%u, %u)", res+16, (unsigned)nmemb, (unsigned)size); + unbound_mem_alloc += s; + memcpy(res, &s, sizeof(s)); + memcpy(res+8, &mem_special, sizeof(mem_special)); + return res+16; +} +#ifdef free +#undef free +#endif +/** free with stats */ +void unbound_stat_free(void *ptr) +{ + size_t s; + if(!ptr) return; + if(memcmp(ptr-8, &mem_special, sizeof(mem_special)) != 0) { + free(ptr); + return; + } + ptr-=16; + memcpy(&s, ptr, sizeof(s)); + log_info("stat free(%p) size %u", ptr+16, (unsigned)s); + memset(ptr+8, 0, 8); + unbound_mem_freed += s; + free(ptr); +} +#ifdef realloc +#undef realloc +#endif +/** realloc with stats */ +void *unbound_stat_realloc(void *ptr, size_t size) +{ + size_t cursz; + void* res; + if(!ptr) return unbound_stat_malloc(size); + if(memcmp(ptr-8, &mem_special, sizeof(mem_special)) != 0) { + return realloc(ptr, size); + } + if(size==0) { + unbound_stat_free(ptr); + return NULL; + } + ptr -= 16; + memcpy(&cursz, ptr, sizeof(cursz)); + if(cursz == size) { + /* nothing changes */ + return ptr; + } + res = malloc(size+16); + if(!res) return NULL; + unbound_mem_alloc += size; + unbound_mem_freed += cursz; + log_info("stat realloc(%p, %u) from %u", ptr+16, (unsigned)size, (unsigned)cursz); + if(cursz > size) { + memcpy(res+16, ptr+16, size); + } else if(size > cursz) { + memcpy(res+16, ptr+16, cursz); + } + memset(ptr+8, 0, 8); + free(ptr); + memcpy(res, &size, sizeof(size)); + memcpy(res+8, &mem_special, sizeof(mem_special)); + return res+16; +} + +/** log to file where alloc was done */ +void *unbound_stat_malloc_log(size_t size, const char* file, int line, + const char* func) +{ + log_info("%s:%d %s malloc(%u)", file, line, func, (unsigned)size); + return unbound_stat_malloc(size); +} + +/** log to file where alloc was done */ +void *unbound_stat_calloc_log(size_t nmemb, size_t size, const char* file, + int line, const char* func) +{ + log_info("%s:%d %s calloc(%u, %u)", file, line, func, + (unsigned) nmemb, (unsigned)size); + return unbound_stat_calloc(nmemb, size); +} + +/** log to file where free was done */ +void unbound_stat_free_log(void *ptr, const char* file, int line, + const char* func) +{ + if(ptr && memcmp(ptr-8, &mem_special, sizeof(mem_special)) == 0) { + size_t s; + memcpy(&s, ptr-16, sizeof(s)); + log_info("%s:%d %s free(%p) size %u", + file, line, func, ptr, (unsigned)s); + } else + log_info("%s:%d %s unmatched free(%p)", file, line, func, ptr); + unbound_stat_free(ptr); +} + +/** log to file where alloc was done */ +void *unbound_stat_realloc_log(void *ptr, size_t size, const char* file, + int line, const char* func) +{ + log_info("%s:%d %s realloc(%p, %u)", file, line, func, + ptr, (unsigned)size); + return unbound_stat_realloc(ptr, size); +} + +#endif /* UNBOUND_ALLOC_STATS */ +#ifdef UNBOUND_ALLOC_LITE +#undef malloc +#undef calloc +#undef free +#undef realloc +/** length of prefix and suffix */ +static size_t lite_pad = 16; +/** prefix value to check */ +static char* lite_pre = "checkfront123456"; +/** suffix value to check */ +static char* lite_post= "checkafter123456"; + +void *unbound_stat_malloc_lite(size_t size, const char* file, int line, + const char* func) +{ + /* [prefix .. len .. actual data .. suffix] */ + void* res = malloc(size+lite_pad*2+sizeof(size_t)); + if(!res) return NULL; + memmove(res, lite_pre, lite_pad); + memmove(res+lite_pad, &size, sizeof(size_t)); + memset(res+lite_pad+sizeof(size_t), 0x1a, size); /* init the memory */ + memmove(res+lite_pad+size+sizeof(size_t), lite_post, lite_pad); + return res+lite_pad+sizeof(size_t); +} + +void *unbound_stat_calloc_lite(size_t nmemb, size_t size, const char* file, + int line, const char* func) +{ + size_t req = nmemb * size; + void* res = malloc(req+lite_pad*2+sizeof(size_t)); + if(!res) return NULL; + memmove(res, lite_pre, lite_pad); + memmove(res+lite_pad, &req, sizeof(size_t)); + memset(res+lite_pad+sizeof(size_t), 0, req); + memmove(res+lite_pad+req+sizeof(size_t), lite_post, lite_pad); + return res+lite_pad+sizeof(size_t); +} + +void unbound_stat_free_lite(void *ptr, const char* file, int line, + const char* func) +{ + void* real; + size_t orig = 0; + if(!ptr) return; + real = ptr-lite_pad-sizeof(size_t); + if(memcmp(real, lite_pre, lite_pad) != 0) { + log_err("free(): prefix failed %s:%d %s", file, line, func); + log_hex("prefix here", real, lite_pad); + log_hex(" should be", lite_pre, lite_pad); + fatal_exit("alloc assertion failed"); + } + memmove(&orig, real+lite_pad, sizeof(size_t)); + if(memcmp(real+lite_pad+orig+sizeof(size_t), lite_post, lite_pad)!=0){ + log_err("free(): suffix failed %s:%d %s", file, line, func); + log_err("alloc size is %d", (int)orig); + log_hex("suffix here", real+lite_pad+orig+sizeof(size_t), + lite_pad); + log_hex(" should be", lite_post, lite_pad); + fatal_exit("alloc assertion failed"); + } + memset(real, 0xdd, orig+lite_pad*2+sizeof(size_t)); /* mark it */ + free(real); +} + +void *unbound_stat_realloc_lite(void *ptr, size_t size, const char* file, + int line, const char* func) +{ + /* always free and realloc (no growing) */ + void* real, *newa; + size_t orig = 0; + if(!ptr) { + /* like malloc() */ + return unbound_stat_malloc_lite(size, file, line, func); + } + if(!size) { + /* like free() */ + unbound_stat_free_lite(ptr, file, line, func); + return NULL; + } + /* change allocation size and copy */ + real = ptr-lite_pad-sizeof(size_t); + if(memcmp(real, lite_pre, lite_pad) != 0) { + log_err("realloc(): prefix failed %s:%d %s", file, line, func); + log_hex("prefix here", real, lite_pad); + log_hex(" should be", lite_pre, lite_pad); + fatal_exit("alloc assertion failed"); + } + memmove(&orig, real+lite_pad, sizeof(size_t)); + if(memcmp(real+lite_pad+orig+sizeof(size_t), lite_post, lite_pad)!=0){ + log_err("realloc(): suffix failed %s:%d %s", file, line, func); + log_err("alloc size is %d", (int)orig); + log_hex("suffix here", real+lite_pad+orig+sizeof(size_t), + lite_pad); + log_hex(" should be", lite_post, lite_pad); + fatal_exit("alloc assertion failed"); + } + /* new alloc and copy over */ + newa = unbound_stat_malloc_lite(size, file, line, func); + if(!newa) + return NULL; + if(orig < size) + memmove(newa, ptr, orig); + else memmove(newa, ptr, size); + memset(real, 0xdd, orig+lite_pad*2+sizeof(size_t)); /* mark it */ + free(real); + return newa; +} + +char* unbound_strdup_lite(const char* s, const char* file, int line, + const char* func) +{ + /* this routine is made to make sure strdup() uses the malloc_lite */ + size_t l = strlen(s)+1; + char* n = (char*)unbound_stat_malloc_lite(l, file, line, func); + if(!n) return NULL; + memmove(n, s, l); + return n; +} + +char* unbound_lite_wrapstr(char* s) +{ + char* n = unbound_strdup_lite(s, __FILE__, __LINE__, __func__); + free(s); + return n; +} + +#undef sldns_pkt2wire +sldns_status unbound_lite_pkt2wire(uint8_t **dest, const sldns_pkt *p, + size_t *size) +{ + uint8_t* md = NULL; + size_t ms = 0; + sldns_status s = sldns_pkt2wire(&md, p, &ms); + if(md) { + *dest = unbound_stat_malloc_lite(ms, __FILE__, __LINE__, + __func__); + *size = ms; + if(!*dest) { free(md); return LDNS_STATUS_MEM_ERR; } + memcpy(*dest, md, ms); + free(md); + } else { + *dest = NULL; + *size = 0; + } + return s; +} + +#undef i2d_DSA_SIG +int unbound_lite_i2d_DSA_SIG(DSA_SIG* dsasig, unsigned char** sig) +{ + unsigned char* n = NULL; + int r= i2d_DSA_SIG(dsasig, &n); + if(n) { + *sig = unbound_stat_malloc_lite((size_t)r, __FILE__, __LINE__, + __func__); + if(!*sig) return -1; + memcpy(*sig, n, (size_t)r); + free(n); + return r; + } + *sig = NULL; + return r; +} + +#endif /* UNBOUND_ALLOC_LITE */ diff --git a/external/unbound/util/alloc.h b/external/unbound/util/alloc.h new file mode 100644 index 000000000..ffd605c5d --- /dev/null +++ b/external/unbound/util/alloc.h @@ -0,0 +1,217 @@ +/* + * util/alloc.h - memory allocation service. + * + * Copyright (c) 2007, NLnet Labs. All rights reserved. + * + * This software is open source. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * Neither the name of the NLNET LABS nor the names of its contributors may + * be used to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/** + * \file + * + * This file contains memory allocation functions. + * + * The reasons for this service are: + * o Avoid locking costs of getting global lock to call malloc(). + * o The packed rrset type needs to be kept on special freelists, + * so that they are reused for other packet rrset allocations. + * + */ + +#ifndef UTIL_ALLOC_H +#define UTIL_ALLOC_H + +#include "util/locks.h" +struct ub_packed_rrset_key; +struct regional; + +/** The special type, packed rrset. Not allowed to be used for other memory */ +typedef struct ub_packed_rrset_key alloc_special_t; +/** clean the special type. Pass pointer. */ +#define alloc_special_clean(x) (x)->id = 0; +/** access next pointer. (in available spot). Pass pointer. */ +#define alloc_special_next(x) ((alloc_special_t*)((x)->entry.overflow_next)) +/** set next pointer. (in available spot). Pass pointers. */ +#define alloc_set_special_next(x, y) \ + ((x)->entry.overflow_next) = (struct lruhash_entry*)(y); + +/** how many blocks to cache locally. */ +#define ALLOC_SPECIAL_MAX 10 + +/** + * Structure that provides allocation. Use one per thread. + * The one on top has a NULL super pointer. + */ +struct alloc_cache { + /** lock, only used for the super. */ + lock_quick_t lock; + /** global allocator above this one. NULL for none (malloc/free) */ + struct alloc_cache* super; + /** singly linked lists of special type. These are free for use. */ + alloc_special_t* quar; + /** number of items in quarantine. */ + size_t num_quar; + /** thread number for id creation */ + int thread_num; + /** next id number to pass out */ + uint64_t next_id; + /** last id number possible */ + uint64_t last_id; + /** what function to call to cleanup when last id is reached */ + void (*cleanup)(void*); + /** user arg for cleanup */ + void* cleanup_arg; + + /** how many regional blocks to keep back max */ + size_t max_reg_blocks; + /** how many regional blocks are kept now */ + size_t num_reg_blocks; + /** linked list of regional blocks, using regional->next */ + struct regional* reg_list; +}; + +/** + * Init alloc (zeroes the struct). + * @param alloc: this parameter is allocated by the caller. + * @param super: super to use (init that before with super_init). + * Pass this argument NULL to init the toplevel alloc structure. + * @param thread_num: thread number for id creation of special type. + */ +void alloc_init(struct alloc_cache* alloc, struct alloc_cache* super, + int thread_num); + +/** + * Free the alloc. Pushes all the cached items into the super structure. + * Or deletes them if alloc->super is NULL. + * Does not free the alloc struct itself (it was also allocated by caller). + * @param alloc: is almost zeroed on exit (except some stats). + */ +void alloc_clear(struct alloc_cache* alloc); + +/** + * Get a new special_t element. + * @param alloc: where to alloc it. + * @return: memory block. Will not return NULL (instead fatal_exit). + * The block is zeroed. + */ +alloc_special_t* alloc_special_obtain(struct alloc_cache* alloc); + +/** + * Return special_t back to pool. + * The block is cleaned up (zeroed) which also invalidates the ID inside. + * @param alloc: where to alloc it. + * @param mem: block to free. + */ +void alloc_special_release(struct alloc_cache* alloc, alloc_special_t* mem); + +/** + * Set ID number of special type to a fresh new ID number. + * In case of ID number overflow, the rrset cache has to be cleared. + * @param alloc: the alloc cache + * @return: fresh id is returned. + */ +uint64_t alloc_get_id(struct alloc_cache* alloc); + +/** + * Get memory size of alloc cache, alloc structure including special types. + * @param alloc: on what alloc. + * @return size in bytes. + */ +size_t alloc_get_mem(struct alloc_cache* alloc); + +/** + * Print debug information (statistics). + * @param alloc: on what alloc. + */ +void alloc_stats(struct alloc_cache* alloc); + +/** + * Get a new regional for query states + * @param alloc: where to alloc it. + * @return regional for use or NULL on alloc failure. + */ +struct regional* alloc_reg_obtain(struct alloc_cache* alloc); + +/** + * Put regional for query states back into alloc cache. + * @param alloc: where to alloc it. + * @param r: regional to put back. + */ +void alloc_reg_release(struct alloc_cache* alloc, struct regional* r); + +/** + * Set cleanup on ID overflow callback function. This should remove all + * RRset ID references from the program. Clear the caches. + * @param alloc: the alloc + * @param cleanup: the callback function, called as cleanup(arg). + * @param arg: user argument to callback function. + */ +void alloc_set_id_cleanup(struct alloc_cache* alloc, void (*cleanup)(void*), + void* arg); + +#ifdef UNBOUND_ALLOC_LITE +# include <ldns/ldns.h> +# include <ldns/packet.h> +# ifdef HAVE_OPENSSL_SSL_H +# include <openssl/ssl.h> +# endif +# define malloc(s) unbound_stat_malloc_lite(s, __FILE__, __LINE__, __func__) +# define calloc(n,s) unbound_stat_calloc_lite(n, s, __FILE__, __LINE__, __func__) +# define free(p) unbound_stat_free_lite(p, __FILE__, __LINE__, __func__) +# define realloc(p,s) unbound_stat_realloc_lite(p, s, __FILE__, __LINE__, __func__) +void *unbound_stat_malloc_lite(size_t size, const char* file, int line, + const char* func); +void *unbound_stat_calloc_lite(size_t nmemb, size_t size, const char* file, + int line, const char* func); +void unbound_stat_free_lite(void *ptr, const char* file, int line, + const char* func); +void *unbound_stat_realloc_lite(void *ptr, size_t size, const char* file, + int line, const char* func); +# ifdef strdup +# undef strdup +# endif +# define strdup(s) unbound_strdup_lite(s, __FILE__, __LINE__, __func__) +char* unbound_strdup_lite(const char* s, const char* file, int line, + const char* func); +char* unbound_lite_wrapstr(char* s); +# define sldns_rr2str(rr) unbound_lite_wrapstr(sldns_rr2str(rr)) +# define sldns_rdf2str(rdf) unbound_lite_wrapstr(sldns_rdf2str(rdf)) +# define sldns_rr_type2str(t) unbound_lite_wrapstr(sldns_rr_type2str(t)) +# define sldns_rr_class2str(c) unbound_lite_wrapstr(sldns_rr_class2str(c)) +# define sldns_rr_list2str(r) unbound_lite_wrapstr(sldns_rr_list2str(r)) +# define sldns_pkt2str(p) unbound_lite_wrapstr(sldns_pkt2str(p)) +# define sldns_pkt_rcode2str(r) unbound_lite_wrapstr(sldns_pkt_rcode2str(r)) +# define sldns_pkt2wire(a, r, s) unbound_lite_pkt2wire(a, r, s) +sldns_status unbound_lite_pkt2wire(uint8_t **dest, const sldns_pkt *p, size_t *size); +# define i2d_DSA_SIG(d, s) unbound_lite_i2d_DSA_SIG(d, s) +int unbound_lite_i2d_DSA_SIG(DSA_SIG* dsasig, unsigned char** sig); +#endif /* UNBOUND_ALLOC_LITE */ + +#endif /* UTIL_ALLOC_H */ diff --git a/external/unbound/util/config_file.c b/external/unbound/util/config_file.c new file mode 100644 index 000000000..96ec2f11d --- /dev/null +++ b/external/unbound/util/config_file.c @@ -0,0 +1,1571 @@ +/* + * util/config_file.c - reads and stores the config file for unbound. + * + * Copyright (c) 2007, NLnet Labs. All rights reserved. + * + * This software is open source. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * Neither the name of the NLNET LABS nor the names of its contributors may + * be used to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/** + * \file + * + * This file contains functions for the config file. + */ + +#include "config.h" +#include <ctype.h> +#include <stdarg.h> +#ifdef HAVE_TIME_H +#include <time.h> +#endif +#include "util/log.h" +#include "util/configyyrename.h" +#include "util/config_file.h" +#include "util/configparser.h" +#include "util/net_help.h" +#include "util/data/msgparse.h" +#include "util/module.h" +#include "util/regional.h" +#include "util/fptr_wlist.h" +#include "util/data/dname.h" +#include "ldns/wire2str.h" +#include "ldns/parseutil.h" +#ifdef HAVE_GLOB_H +# include <glob.h> +#endif + +/** global config during parsing */ +struct config_parser_state* cfg_parser = 0; + +/** init ports possible for use */ +static void init_outgoing_availports(int* array, int num); + +struct config_file* +config_create(void) +{ + struct config_file* cfg; + cfg = (struct config_file*)calloc(1, sizeof(struct config_file)); + if(!cfg) + return NULL; + /* the defaults if no config is present */ + cfg->verbosity = 1; + cfg->stat_interval = 0; + cfg->stat_cumulative = 0; + cfg->stat_extended = 0; + cfg->num_threads = 1; + cfg->port = UNBOUND_DNS_PORT; + cfg->do_ip4 = 1; + cfg->do_ip6 = 1; + cfg->do_udp = 1; + cfg->do_tcp = 1; + cfg->tcp_upstream = 0; + cfg->ssl_service_key = NULL; + cfg->ssl_service_pem = NULL; + cfg->ssl_port = 443; + cfg->ssl_upstream = 0; + cfg->use_syslog = 1; + cfg->log_time_ascii = 0; + cfg->log_queries = 0; +#ifndef USE_WINSOCK +# ifdef USE_MINI_EVENT + /* select max 1024 sockets */ + cfg->outgoing_num_ports = 960; + cfg->num_queries_per_thread = 512; +# else + /* libevent can use many sockets */ + cfg->outgoing_num_ports = 4096; + cfg->num_queries_per_thread = 1024; +# endif + cfg->outgoing_num_tcp = 10; + cfg->incoming_num_tcp = 10; +#else + cfg->outgoing_num_ports = 48; /* windows is limited in num fds */ + cfg->num_queries_per_thread = 24; + cfg->outgoing_num_tcp = 2; /* leaves 64-52=12 for: 4if,1stop,thread4 */ + cfg->incoming_num_tcp = 2; +#endif + cfg->edns_buffer_size = 4096; /* 4k from rfc recommendation */ + cfg->msg_buffer_size = 65552; /* 64 k + a small margin */ + cfg->msg_cache_size = 4 * 1024 * 1024; + cfg->msg_cache_slabs = 4; + cfg->jostle_time = 200; + cfg->rrset_cache_size = 4 * 1024 * 1024; + cfg->rrset_cache_slabs = 4; + cfg->host_ttl = 900; + cfg->bogus_ttl = 60; + cfg->min_ttl = 0; + cfg->max_ttl = 3600 * 24; + cfg->prefetch = 0; + cfg->prefetch_key = 0; + cfg->infra_cache_slabs = 4; + cfg->infra_cache_numhosts = 10000; + cfg->delay_close = 0; + if(!(cfg->outgoing_avail_ports = (int*)calloc(65536, sizeof(int)))) + goto error_exit; + init_outgoing_availports(cfg->outgoing_avail_ports, 65536); + if(!(cfg->username = strdup(UB_USERNAME))) goto error_exit; +#ifdef HAVE_CHROOT + if(!(cfg->chrootdir = strdup(CHROOT_DIR))) goto error_exit; +#endif + if(!(cfg->directory = strdup(RUN_DIR))) goto error_exit; + if(!(cfg->logfile = strdup(""))) goto error_exit; + if(!(cfg->pidfile = strdup(PIDFILE))) goto error_exit; + if(!(cfg->target_fetch_policy = strdup("3 2 1 0 0"))) goto error_exit; + cfg->donotqueryaddrs = NULL; + cfg->donotquery_localhost = 1; + cfg->root_hints = NULL; + cfg->do_daemonize = 1; + cfg->if_automatic = 0; + cfg->so_rcvbuf = 0; + cfg->so_sndbuf = 0; + cfg->so_reuseport = 0; + cfg->num_ifs = 0; + cfg->ifs = NULL; + cfg->num_out_ifs = 0; + cfg->out_ifs = NULL; + cfg->stubs = NULL; + cfg->forwards = NULL; + cfg->acls = NULL; + cfg->harden_short_bufsize = 0; + cfg->harden_large_queries = 0; + cfg->harden_glue = 1; + cfg->harden_dnssec_stripped = 1; + cfg->harden_below_nxdomain = 0; + cfg->harden_referral_path = 0; + cfg->use_caps_bits_for_id = 0; + cfg->private_address = NULL; + cfg->private_domain = NULL; + cfg->unwanted_threshold = 0; + cfg->hide_identity = 0; + cfg->hide_version = 0; + cfg->identity = NULL; + cfg->version = NULL; + cfg->auto_trust_anchor_file_list = NULL; + cfg->trust_anchor_file_list = NULL; + cfg->trust_anchor_list = NULL; + cfg->trusted_keys_file_list = NULL; + cfg->dlv_anchor_file = NULL; + cfg->dlv_anchor_list = NULL; + cfg->domain_insecure = NULL; + cfg->val_date_override = 0; + cfg->val_sig_skew_min = 3600; /* at least daylight savings trouble */ + cfg->val_sig_skew_max = 86400; /* at most timezone settings trouble */ + cfg->val_clean_additional = 1; + cfg->val_log_level = 0; + cfg->val_log_squelch = 0; + cfg->val_permissive_mode = 0; + cfg->ignore_cd = 0; + cfg->add_holddown = 30*24*3600; + cfg->del_holddown = 30*24*3600; + cfg->keep_missing = 366*24*3600; /* one year plus a little leeway */ + cfg->key_cache_size = 4 * 1024 * 1024; + cfg->key_cache_slabs = 4; + cfg->neg_cache_size = 1 * 1024 * 1024; + cfg->local_zones = NULL; + cfg->local_zones_nodefault = NULL; + cfg->local_data = NULL; + cfg->unblock_lan_zones = 0; + cfg->python_script = NULL; + cfg->remote_control_enable = 0; + cfg->control_ifs = NULL; + cfg->control_port = UNBOUND_CONTROL_PORT; + cfg->minimal_responses = 0; + cfg->rrset_roundrobin = 0; + cfg->max_udp_size = 4096; + if(!(cfg->server_key_file = strdup(RUN_DIR"/unbound_server.key"))) + goto error_exit; + if(!(cfg->server_cert_file = strdup(RUN_DIR"/unbound_server.pem"))) + goto error_exit; + if(!(cfg->control_key_file = strdup(RUN_DIR"/unbound_control.key"))) + goto error_exit; + if(!(cfg->control_cert_file = strdup(RUN_DIR"/unbound_control.pem"))) + goto error_exit; + + if(!(cfg->module_conf = strdup("validator iterator"))) goto error_exit; + if(!(cfg->val_nsec3_key_iterations = + strdup("1024 150 2048 500 4096 2500"))) goto error_exit; +#if defined(DNSTAP_SOCKET_PATH) + if(!(cfg->dnstap_socket_path = strdup(DNSTAP_SOCKET_PATH))) + goto error_exit; +#endif + return cfg; +error_exit: + config_delete(cfg); + return NULL; +} + +struct config_file* config_create_forlib(void) +{ + struct config_file* cfg = config_create(); + if(!cfg) return NULL; + /* modifications for library use, less verbose, less memory */ + free(cfg->chrootdir); + cfg->chrootdir = NULL; + cfg->verbosity = 0; + cfg->outgoing_num_ports = 16; /* in library use, this is 'reasonable' + and probably within the ulimit(maxfds) of the user */ + cfg->outgoing_num_tcp = 2; + cfg->msg_cache_size = 1024*1024; + cfg->msg_cache_slabs = 1; + cfg->rrset_cache_size = 1024*1024; + cfg->rrset_cache_slabs = 1; + cfg->infra_cache_slabs = 1; + cfg->use_syslog = 0; + cfg->key_cache_size = 1024*1024; + cfg->key_cache_slabs = 1; + cfg->neg_cache_size = 100 * 1024; + cfg->donotquery_localhost = 0; /* allow, so that you can ask a + forward nameserver running on localhost */ + cfg->val_log_level = 2; /* to fill why_bogus with */ + cfg->val_log_squelch = 1; + return cfg; +} + +/** check that the value passed is >= 0 */ +#define IS_NUMBER_OR_ZERO \ + if(atoi(val) == 0 && strcmp(val, "0") != 0) return 0 +/** check that the value passed is > 0 */ +#define IS_NONZERO_NUMBER \ + if(atoi(val) == 0) return 0 +/** check that the value passed is not 0 and a power of 2 */ +#define IS_POW2_NUMBER \ + if(atoi(val) == 0 || !is_pow2((size_t)atoi(val))) return 0 +/** check that the value passed is yes or no */ +#define IS_YES_OR_NO \ + if(strcmp(val, "yes") != 0 && strcmp(val, "no") != 0) return 0 +/** put integer_or_zero into variable */ +#define S_NUMBER_OR_ZERO(str, var) if(strcmp(opt, str) == 0) \ + { IS_NUMBER_OR_ZERO; cfg->var = atoi(val); } +/** put integer_nonzero into variable */ +#define S_NUMBER_NONZERO(str, var) if(strcmp(opt, str) == 0) \ + { IS_NONZERO_NUMBER; cfg->var = atoi(val); } +/** put integer_or_zero into unsigned */ +#define S_UNSIGNED_OR_ZERO(str, var) if(strcmp(opt, str) == 0) \ + { IS_NUMBER_OR_ZERO; cfg->var = (unsigned)atoi(val); } +/** put integer_or_zero into size_t */ +#define S_SIZET_OR_ZERO(str, var) if(strcmp(opt, str) == 0) \ + { IS_NUMBER_OR_ZERO; cfg->var = (size_t)atoi(val); } +/** put integer_nonzero into size_t */ +#define S_SIZET_NONZERO(str, var) if(strcmp(opt, str) == 0) \ + { IS_NONZERO_NUMBER; cfg->var = (size_t)atoi(val); } +/** put yesno into variable */ +#define S_YNO(str, var) if(strcmp(opt, str) == 0) \ + { IS_YES_OR_NO; cfg->var = (strcmp(val, "yes") == 0); } +/** put memsize into variable */ +#define S_MEMSIZE(str, var) if(strcmp(opt, str)==0) \ + { return cfg_parse_memsize(val, &cfg->var); } +/** put pow2 number into variable */ +#define S_POW2(str, var) if(strcmp(opt, str)==0) \ + { IS_POW2_NUMBER; cfg->var = (size_t)atoi(val); } +/** put string into variable */ +#define S_STR(str, var) if(strcmp(opt, str)==0) \ + { free(cfg->var); return (cfg->var = strdup(val)) != NULL; } +/** put string into strlist */ +#define S_STRLIST(str, var) if(strcmp(opt, str)==0) \ + { return cfg_strlist_insert(&cfg->var, strdup(val)); } + +int config_set_option(struct config_file* cfg, const char* opt, + const char* val) +{ + S_NUMBER_OR_ZERO("verbosity:", verbosity) + else if(strcmp(opt, "statistics-interval:") == 0) { + if(strcmp(val, "0") == 0 || strcmp(val, "") == 0) + cfg->stat_interval = 0; + else if(atoi(val) == 0) + return 0; + else cfg->stat_interval = atoi(val); + } else if(strcmp(opt, "num_threads:") == 0) { + /* not supported, library must have 1 thread in bgworker */ + return 0; + } else if(strcmp(opt, "outgoing-port-permit:") == 0) { + return cfg_mark_ports(val, 1, + cfg->outgoing_avail_ports, 65536); + } else if(strcmp(opt, "outgoing-port-avoid:") == 0) { + return cfg_mark_ports(val, 0, + cfg->outgoing_avail_ports, 65536); + } else if(strcmp(opt, "local-zone:") == 0) { + return cfg_parse_local_zone(cfg, val); + } else if(strcmp(opt, "val-override-date:") == 0) { + if(strcmp(val, "") == 0 || strcmp(val, "0") == 0) { + cfg->val_date_override = 0; + } else if(strlen(val) == 14) { + cfg->val_date_override = cfg_convert_timeval(val); + return cfg->val_date_override != 0; + } else { + if(atoi(val) == 0) return 0; + cfg->val_date_override = (uint32_t)atoi(val); + } + } else if(strcmp(opt, "local-data-ptr:") == 0) { + char* ptr = cfg_ptr_reverse((char*)opt); + return cfg_strlist_insert(&cfg->local_data, ptr); + } else if(strcmp(opt, "logfile:") == 0) { + cfg->use_syslog = 0; + free(cfg->logfile); + return (cfg->logfile = strdup(val)) != NULL; + } + else if(strcmp(opt, "log-time-ascii:") == 0) + { IS_YES_OR_NO; cfg->log_time_ascii = (strcmp(val, "yes") == 0); + log_set_time_asc(cfg->log_time_ascii); } + else S_SIZET_NONZERO("max-udp-size:", max_udp_size) + else S_YNO("use-syslog:", use_syslog) + else S_YNO("extended-statistics:", stat_extended) + else S_YNO("statistics-cumulative:", stat_cumulative) + else S_YNO("do-ip4:", do_ip4) + else S_YNO("do-ip6:", do_ip6) + else S_YNO("do-udp:", do_udp) + else S_YNO("do-tcp:", do_tcp) + else S_YNO("tcp-upstream:", tcp_upstream) + else S_YNO("ssl-upstream:", ssl_upstream) + else S_STR("ssl-service-key:", ssl_service_key) + else S_STR("ssl-service-pem:", ssl_service_pem) + else S_NUMBER_NONZERO("ssl-port:", ssl_port) + else S_YNO("interface-automatic:", if_automatic) + else S_YNO("do-daemonize:", do_daemonize) + else S_NUMBER_NONZERO("port:", port) + else S_NUMBER_NONZERO("outgoing-range:", outgoing_num_ports) + else S_SIZET_OR_ZERO("outgoing-num-tcp:", outgoing_num_tcp) + else S_SIZET_OR_ZERO("incoming-num-tcp:", incoming_num_tcp) + else S_SIZET_NONZERO("edns-buffer-size:", edns_buffer_size) + else S_SIZET_NONZERO("msg-buffer-size:", msg_buffer_size) + else S_MEMSIZE("msg-cache-size:", msg_cache_size) + else S_POW2("msg-cache-slabs:", msg_cache_slabs) + else S_SIZET_NONZERO("num-queries-per-thread:",num_queries_per_thread) + else S_SIZET_OR_ZERO("jostle-timeout:", jostle_time) + else S_MEMSIZE("so-rcvbuf:", so_rcvbuf) + else S_MEMSIZE("so-sndbuf:", so_sndbuf) + else S_YNO("so-reuseport:", so_reuseport) + else S_MEMSIZE("rrset-cache-size:", rrset_cache_size) + else S_POW2("rrset-cache-slabs:", rrset_cache_slabs) + else S_YNO("prefetch:", prefetch) + else S_YNO("prefetch-key:", prefetch_key) + else if(strcmp(opt, "cache-max-ttl:") == 0) + { IS_NUMBER_OR_ZERO; cfg->max_ttl = atoi(val); MAX_TTL=(time_t)cfg->max_ttl;} + else if(strcmp(opt, "cache-min-ttl:") == 0) + { IS_NUMBER_OR_ZERO; cfg->min_ttl = atoi(val); MIN_TTL=(time_t)cfg->min_ttl;} + else S_NUMBER_OR_ZERO("infra-host-ttl:", host_ttl) + else S_POW2("infra-cache-slabs:", infra_cache_slabs) + else S_SIZET_NONZERO("infra-cache-numhosts:", infra_cache_numhosts) + else S_NUMBER_OR_ZERO("delay-close:", delay_close) + else S_STR("chroot:", chrootdir) + else S_STR("username:", username) + else S_STR("directory:", directory) + else S_STR("pidfile:", pidfile) + else S_YNO("hide-identity:", hide_identity) + else S_YNO("hide-version:", hide_version) + else S_STR("identity:", identity) + else S_STR("version:", version) + else S_STRLIST("root-hints:", root_hints) + else S_STR("target-fetch-policy:", target_fetch_policy) + else S_YNO("harden-glue:", harden_glue) + else S_YNO("harden-short-bufsize:", harden_short_bufsize) + else S_YNO("harden-large-queries:", harden_large_queries) + else S_YNO("harden-dnssec-stripped:", harden_dnssec_stripped) + else S_YNO("harden-below-nxdomain:", harden_below_nxdomain) + else S_YNO("harden-referral-path:", harden_referral_path) + else S_YNO("use-caps-for-id", use_caps_bits_for_id) + else S_SIZET_OR_ZERO("unwanted-reply-threshold:", unwanted_threshold) + else S_STRLIST("private-address:", private_address) + else S_STRLIST("private-domain:", private_domain) + else S_YNO("do-not-query-localhost:", donotquery_localhost) + else S_STRLIST("do-not-query-address:", donotqueryaddrs) + else S_STRLIST("auto-trust-anchor-file:", auto_trust_anchor_file_list) + else S_STRLIST("trust-anchor-file:", trust_anchor_file_list) + else S_STRLIST("trust-anchor:", trust_anchor_list) + else S_STRLIST("trusted-keys-file:", trusted_keys_file_list) + else S_STR("dlv-anchor-file:", dlv_anchor_file) + else S_STRLIST("dlv-anchor:", dlv_anchor_list) + else S_STRLIST("domain-insecure:", domain_insecure) + else S_NUMBER_OR_ZERO("val-bogus-ttl:", bogus_ttl) + else S_YNO("val-clean-additional:", val_clean_additional) + else S_NUMBER_OR_ZERO("val-log-level:", val_log_level) + else S_YNO("val-log-squelch:", val_log_squelch) + else S_YNO("log-queries:", log_queries) + else S_YNO("val-permissive-mode:", val_permissive_mode) + else S_YNO("ignore-cd-flag:", ignore_cd) + else S_STR("val-nsec3-keysize-iterations:", val_nsec3_key_iterations) + else S_UNSIGNED_OR_ZERO("add-holddown:", add_holddown) + else S_UNSIGNED_OR_ZERO("del-holddown:", del_holddown) + else S_UNSIGNED_OR_ZERO("keep-missing:", keep_missing) + else S_MEMSIZE("key-cache-size:", key_cache_size) + else S_POW2("key-cache-slabs:", key_cache_slabs) + else S_MEMSIZE("neg-cache-size:", neg_cache_size) + else S_YNO("minimal-responses:", minimal_responses) + else S_YNO("rrset-roundrobin:", rrset_roundrobin) + else S_STRLIST("local-data:", local_data) + else S_YNO("unblock-lan-zones:", unblock_lan_zones) + else S_YNO("control-enable:", remote_control_enable) + else S_STRLIST("control-interface:", control_ifs) + else S_NUMBER_NONZERO("control-port:", control_port) + else S_STR("server-key-file:", server_key_file) + else S_STR("server-cert-file:", server_cert_file) + else S_STR("control-key-file:", control_key_file) + else S_STR("control-cert-file:", control_cert_file) + else S_STR("module-config:", module_conf) + else S_STR("python-script:", python_script) + /* val_sig_skew_min and max are copied into val_env during init, + * so this does not update val_env with set_option */ + else if(strcmp(opt, "val-sig-skew-min:") == 0) + { IS_NUMBER_OR_ZERO; cfg->val_sig_skew_min = (int32_t)atoi(val); } + else if(strcmp(opt, "val-sig-skew-max:") == 0) + { IS_NUMBER_OR_ZERO; cfg->val_sig_skew_max = (int32_t)atoi(val); } + else if (strcmp(opt, "outgoing-interface:") == 0) { + char* d = strdup(val); + char** oi = (char**)malloc((cfg->num_out_ifs+1)*sizeof(char*)); + if(!d || !oi) { free(d); free(oi); return -1; } + if(cfg->out_ifs && cfg->num_out_ifs) { + memmove(oi, cfg->out_ifs, cfg->num_out_ifs*sizeof(char*)); + free(cfg->out_ifs); + } + oi[cfg->num_out_ifs++] = d; + cfg->out_ifs = oi; + } else { + /* unknown or unsupported (from the set_option interface): + * interface, outgoing-interface, access-control, + * stub-zone, name, stub-addr, stub-host, stub-prime + * forward-first, stub-first, + * forward-zone, name, forward-addr, forward-host */ + return 0; + } + return 1; +} + +void config_print_func(char* line, void* arg) +{ + FILE* f = (FILE*)arg; + (void)fprintf(f, "%s\n", line); +} + +/** collate func arg */ +struct config_collate_arg { + /** list of result items */ + struct config_strlist_head list; + /** if a malloc error occurred, 0 is OK */ + int status; +}; + +void config_collate_func(char* line, void* arg) +{ + struct config_collate_arg* m = (struct config_collate_arg*)arg; + if(m->status) + return; + if(!cfg_strlist_append(&m->list, strdup(line))) + m->status = 1; +} + +int config_get_option_list(struct config_file* cfg, const char* opt, + struct config_strlist** list) +{ + struct config_collate_arg m; + memset(&m, 0, sizeof(m)); + *list = NULL; + if(!config_get_option(cfg, opt, config_collate_func, &m)) + return 1; + if(m.status) { + config_delstrlist(m.list.first); + return 2; + } + *list = m.list.first; + return 0; +} + +int +config_get_option_collate(struct config_file* cfg, const char* opt, char** str) +{ + struct config_strlist* list = NULL; + int r; + *str = NULL; + if((r = config_get_option_list(cfg, opt, &list)) != 0) + return r; + *str = config_collate_cat(list); + config_delstrlist(list); + if(!*str) return 2; + return 0; +} + +char* +config_collate_cat(struct config_strlist* list) +{ + size_t total = 0, left; + struct config_strlist* s; + char *r, *w; + if(!list) /* no elements */ + return strdup(""); + if(list->next == NULL) /* one element , no newline at end. */ + return strdup(list->str); + /* count total length */ + for(s=list; s; s=s->next) + total += strlen(s->str) + 1; /* len + newline */ + left = total+1; /* one extra for nul at end */ + r = malloc(left); + if(!r) + return NULL; + w = r; + for(s=list; s; s=s->next) { + size_t this = strlen(s->str); + if(this+2 > left) { /* sanity check */ + free(r); + return NULL; + } + snprintf(w, left, "%s\n", s->str); + this = strlen(w); + w += this; + left -= this; + } + return r; +} + +/** compare and print decimal option */ +#define O_DEC(opt, str, var) if(strcmp(opt, str)==0) \ + {snprintf(buf, len, "%d", (int)cfg->var); \ + func(buf, arg);} +/** compare and print unsigned option */ +#define O_UNS(opt, str, var) if(strcmp(opt, str)==0) \ + {snprintf(buf, len, "%u", (unsigned)cfg->var); \ + func(buf, arg);} +/** compare and print yesno option */ +#define O_YNO(opt, str, var) if(strcmp(opt, str)==0) \ + {func(cfg->var?"yes":"no", arg);} +/** compare and print string option */ +#define O_STR(opt, str, var) if(strcmp(opt, str)==0) \ + {func(cfg->var?cfg->var:"", arg);} +/** compare and print array option */ +#define O_IFC(opt, str, num, arr) if(strcmp(opt, str)==0) \ + {int i; for(i=0; i<cfg->num; i++) func(cfg->arr[i], arg);} +/** compare and print memorysize option */ +#define O_MEM(opt, str, var) if(strcmp(opt, str)==0) { \ + if(cfg->var > 1024*1024*1024) { \ + size_t f=cfg->var/(size_t)1000000, b=cfg->var%(size_t)1000000; \ + snprintf(buf, len, "%u%6.6u\n", (unsigned)f, (unsigned)b); \ + } else snprintf(buf, len, "%u\n", (unsigned)cfg->var); \ + func(buf, arg);} +/** compare and print list option */ +#define O_LST(opt, name, lst) if(strcmp(opt, name)==0) { \ + struct config_strlist* p = cfg->lst; \ + for(p = cfg->lst; p; p = p->next) \ + func(p->str, arg); \ + } +/** compare and print list option */ +#define O_LS2(opt, name, lst) if(strcmp(opt, name)==0) { \ + struct config_str2list* p = cfg->lst; \ + for(p = cfg->lst; p; p = p->next) \ + snprintf(buf, len, "%s %s\n", p->str, p->str2); \ + func(buf, arg); \ + } + +int +config_get_option(struct config_file* cfg, const char* opt, + void (*func)(char*,void*), void* arg) +{ + char buf[1024]; + size_t len = sizeof(buf); + fptr_ok(fptr_whitelist_print_func(func)); + O_DEC(opt, "verbosity", verbosity) + else O_DEC(opt, "statistics-interval", stat_interval) + else O_YNO(opt, "statistics-cumulative", stat_cumulative) + else O_YNO(opt, "extended-statistics", stat_extended) + else O_YNO(opt, "use-syslog", use_syslog) + else O_YNO(opt, "log-time-ascii", log_time_ascii) + else O_DEC(opt, "num-threads", num_threads) + else O_IFC(opt, "interface", num_ifs, ifs) + else O_IFC(opt, "outgoing-interface", num_out_ifs, out_ifs) + else O_YNO(opt, "interface-automatic", if_automatic) + else O_DEC(opt, "port", port) + else O_DEC(opt, "outgoing-range", outgoing_num_ports) + else O_DEC(opt, "outgoing-num-tcp", outgoing_num_tcp) + else O_DEC(opt, "incoming-num-tcp", incoming_num_tcp) + else O_DEC(opt, "edns-buffer-size", edns_buffer_size) + else O_DEC(opt, "msg-buffer-size", msg_buffer_size) + else O_MEM(opt, "msg-cache-size", msg_cache_size) + else O_DEC(opt, "msg-cache-slabs", msg_cache_slabs) + else O_DEC(opt, "num-queries-per-thread", num_queries_per_thread) + else O_UNS(opt, "jostle-timeout", jostle_time) + else O_MEM(opt, "so-rcvbuf", so_rcvbuf) + else O_MEM(opt, "so-sndbuf", so_sndbuf) + else O_YNO(opt, "so-reuseport", so_reuseport) + else O_MEM(opt, "rrset-cache-size", rrset_cache_size) + else O_DEC(opt, "rrset-cache-slabs", rrset_cache_slabs) + else O_YNO(opt, "prefetch-key", prefetch_key) + else O_YNO(opt, "prefetch", prefetch) + else O_DEC(opt, "cache-max-ttl", max_ttl) + else O_DEC(opt, "cache-min-ttl", min_ttl) + else O_DEC(opt, "infra-host-ttl", host_ttl) + else O_DEC(opt, "infra-cache-slabs", infra_cache_slabs) + else O_MEM(opt, "infra-cache-numhosts", infra_cache_numhosts) + else O_UNS(opt, "delay-close", delay_close) + else O_YNO(opt, "do-ip4", do_ip4) + else O_YNO(opt, "do-ip6", do_ip6) + else O_YNO(opt, "do-udp", do_udp) + else O_YNO(opt, "do-tcp", do_tcp) + else O_YNO(opt, "tcp-upstream", tcp_upstream) + else O_YNO(opt, "ssl-upstream", ssl_upstream) + else O_STR(opt, "ssl-service-key", ssl_service_key) + else O_STR(opt, "ssl-service-pem", ssl_service_pem) + else O_DEC(opt, "ssl-port", ssl_port) + else O_YNO(opt, "do-daemonize", do_daemonize) + else O_STR(opt, "chroot", chrootdir) + else O_STR(opt, "username", username) + else O_STR(opt, "directory", directory) + else O_STR(opt, "logfile", logfile) + else O_YNO(opt, "log-queries", log_queries) + else O_STR(opt, "pidfile", pidfile) + else O_YNO(opt, "hide-identity", hide_identity) + else O_YNO(opt, "hide-version", hide_version) + else O_STR(opt, "identity", identity) + else O_STR(opt, "version", version) + else O_STR(opt, "target-fetch-policy", target_fetch_policy) + else O_YNO(opt, "harden-short-bufsize", harden_short_bufsize) + else O_YNO(opt, "harden-large-queries", harden_large_queries) + else O_YNO(opt, "harden-glue", harden_glue) + else O_YNO(opt, "harden-dnssec-stripped", harden_dnssec_stripped) + else O_YNO(opt, "harden-below-nxdomain", harden_below_nxdomain) + else O_YNO(opt, "harden-referral-path", harden_referral_path) + else O_YNO(opt, "use-caps-for-id", use_caps_bits_for_id) + else O_DEC(opt, "unwanted-reply-threshold", unwanted_threshold) + else O_YNO(opt, "do-not-query-localhost", donotquery_localhost) + else O_STR(opt, "module-config", module_conf) + else O_STR(opt, "dlv-anchor-file", dlv_anchor_file) + else O_DEC(opt, "val-bogus-ttl", bogus_ttl) + else O_YNO(opt, "val-clean-additional", val_clean_additional) + else O_DEC(opt, "val-log-level", val_log_level) + else O_YNO(opt, "val-permissive-mode", val_permissive_mode) + else O_YNO(opt, "ignore-cd-flag", ignore_cd) + else O_STR(opt, "val-nsec3-keysize-iterations",val_nsec3_key_iterations) + else O_UNS(opt, "add-holddown", add_holddown) + else O_UNS(opt, "del-holddown", del_holddown) + else O_UNS(opt, "keep-missing", keep_missing) + else O_MEM(opt, "key-cache-size", key_cache_size) + else O_DEC(opt, "key-cache-slabs", key_cache_slabs) + else O_MEM(opt, "neg-cache-size", neg_cache_size) + else O_YNO(opt, "control-enable", remote_control_enable) + else O_DEC(opt, "control-port", control_port) + else O_STR(opt, "server-key-file", server_key_file) + else O_STR(opt, "server-cert-file", server_cert_file) + else O_STR(opt, "control-key-file", control_key_file) + else O_STR(opt, "control-cert-file", control_cert_file) + else O_LST(opt, "root-hints", root_hints) + else O_LS2(opt, "access-control", acls) + else O_LST(opt, "do-not-query-address", donotqueryaddrs) + else O_LST(opt, "private-address", private_address) + else O_LST(opt, "private-domain", private_domain) + else O_LST(opt, "auto-trust-anchor-file", auto_trust_anchor_file_list) + else O_LST(opt, "trust-anchor-file", trust_anchor_file_list) + else O_LST(opt, "trust-anchor", trust_anchor_list) + else O_LST(opt, "trusted-keys-file", trusted_keys_file_list) + else O_LST(opt, "dlv-anchor", dlv_anchor_list) + else O_LST(opt, "control-interface", control_ifs) + else O_LST(opt, "domain-insecure", domain_insecure) + else O_UNS(opt, "val-override-date", val_date_override) + else O_YNO(opt, "minimal-responses", minimal_responses) + else O_YNO(opt, "rrset-roundrobin", rrset_roundrobin) + else O_YNO(opt, "unblock-lan-zones", unblock_lan_zones) + else O_DEC(opt, "max-udp-size", max_udp_size) + else O_STR(opt, "python-script", python_script) + else O_DEC(opt, "val-sig-skew-min", val_sig_skew_min) + else O_DEC(opt, "val-sig-skew-max", val_sig_skew_max) + /* not here: + * outgoing-permit, outgoing-avoid - have list of ports + * local-zone - zones and nodefault variables + * local-data - see below + * local-data-ptr - converted to local-data entries + * stub-zone, name, stub-addr, stub-host, stub-prime + * forward-zone, name, forward-addr, forward-host + */ + else return 0; + return 1; +} + +/** initialize the global cfg_parser object */ +static void +create_cfg_parser(struct config_file* cfg, char* filename, const char* chroot) +{ + static struct config_parser_state st; + cfg_parser = &st; + cfg_parser->filename = filename; + cfg_parser->line = 1; + cfg_parser->errors = 0; + cfg_parser->cfg = cfg; + cfg_parser->chroot = chroot; + init_cfg_parse(); +} + +int +config_read(struct config_file* cfg, const char* filename, const char* chroot) +{ + FILE *in; + char *fname = (char*)filename; +#ifdef HAVE_GLOB + glob_t g; + size_t i; + int r, flags; +#endif + if(!fname) + return 1; + + /* check for wildcards */ +#ifdef HAVE_GLOB + if(!(!strchr(fname, '*') && !strchr(fname, '?') && !strchr(fname, '[') && + !strchr(fname, '{') && !strchr(fname, '~'))) { + verbose(VERB_QUERY, "wildcard found, processing %s", fname); + flags = 0 +#ifdef GLOB_ERR + | GLOB_ERR +#endif +#ifdef GLOB_NOSORT + | GLOB_NOSORT +#endif +#ifdef GLOB_BRACE + | GLOB_BRACE +#endif +#ifdef GLOB_TILDE + | GLOB_TILDE +#endif + ; + memset(&g, 0, sizeof(g)); + r = glob(fname, flags, NULL, &g); + if(r) { + /* some error */ + globfree(&g); + if(r == GLOB_NOMATCH) { + verbose(VERB_QUERY, "include: " + "no matches for %s", fname); + return 1; + } else if(r == GLOB_NOSPACE) { + log_err("include: %s: " + "fnametern out of memory", fname); + } else if(r == GLOB_ABORTED) { + log_err("wildcard include: %s: expansion " + "aborted (%s)", fname, strerror(errno)); + } else { + log_err("wildcard include: %s: expansion " + "failed (%s)", fname, strerror(errno)); + } + /* ignore globs that yield no files */ + return 1; + } + /* process files found, if any */ + for(i=0; i<(size_t)g.gl_pathc; i++) { + if(!config_read(cfg, g.gl_pathv[i], chroot)) { + log_err("error reading wildcard " + "include: %s", g.gl_pathv[i]); + globfree(&g); + return 0; + } + } + globfree(&g); + return 1; + } +#endif /* HAVE_GLOB */ + + in = fopen(fname, "r"); + if(!in) { + log_err("Could not open %s: %s", fname, strerror(errno)); + return 0; + } + create_cfg_parser(cfg, fname, chroot); + ub_c_in = in; + ub_c_parse(); + fclose(in); + + if(cfg_parser->errors != 0) { + fprintf(stderr, "read %s failed: %d errors in configuration file\n", + fname, cfg_parser->errors); + errno=EINVAL; + return 0; + } + return 1; +} + +void +config_delstrlist(struct config_strlist* p) +{ + struct config_strlist *np; + while(p) { + np = p->next; + free(p->str); + free(p); + p = np; + } +} + +void +config_deldblstrlist(struct config_str2list* p) +{ + struct config_str2list *np; + while(p) { + np = p->next; + free(p->str); + free(p->str2); + free(p); + p = np; + } +} + +void +config_delstubs(struct config_stub* p) +{ + struct config_stub* np; + while(p) { + np = p->next; + free(p->name); + config_delstrlist(p->hosts); + config_delstrlist(p->addrs); + free(p); + p = np; + } +} + +void +config_delete(struct config_file* cfg) +{ + if(!cfg) return; + free(cfg->username); + free(cfg->chrootdir); + free(cfg->directory); + free(cfg->logfile); + free(cfg->pidfile); + free(cfg->target_fetch_policy); + free(cfg->ssl_service_key); + free(cfg->ssl_service_pem); + if(cfg->ifs) { + int i; + for(i=0; i<cfg->num_ifs; i++) + free(cfg->ifs[i]); + free(cfg->ifs); + } + if(cfg->out_ifs) { + int i; + for(i=0; i<cfg->num_out_ifs; i++) + free(cfg->out_ifs[i]); + free(cfg->out_ifs); + } + config_delstubs(cfg->stubs); + config_delstubs(cfg->forwards); + config_delstrlist(cfg->donotqueryaddrs); + config_delstrlist(cfg->root_hints); + free(cfg->identity); + free(cfg->version); + free(cfg->module_conf); + free(cfg->outgoing_avail_ports); + config_delstrlist(cfg->private_address); + config_delstrlist(cfg->private_domain); + config_delstrlist(cfg->auto_trust_anchor_file_list); + config_delstrlist(cfg->trust_anchor_file_list); + config_delstrlist(cfg->trusted_keys_file_list); + config_delstrlist(cfg->trust_anchor_list); + config_delstrlist(cfg->domain_insecure); + free(cfg->dlv_anchor_file); + config_delstrlist(cfg->dlv_anchor_list); + config_deldblstrlist(cfg->acls); + free(cfg->val_nsec3_key_iterations); + config_deldblstrlist(cfg->local_zones); + config_delstrlist(cfg->local_zones_nodefault); + config_delstrlist(cfg->local_data); + config_delstrlist(cfg->control_ifs); + free(cfg->server_key_file); + free(cfg->server_cert_file); + free(cfg->control_key_file); + free(cfg->control_cert_file); + free(cfg->dnstap_socket_path); + free(cfg->dnstap_identity); + free(cfg->dnstap_version); + free(cfg); +} + +static void +init_outgoing_availports(int* a, int num) +{ + /* generated with make iana_update */ + const int iana_assigned[] = { +#include "util/iana_ports.inc" + -1 }; /* end marker to put behind trailing comma */ + + int i; + /* do not use <1024, that could be trouble with the system, privs */ + for(i=1024; i<num; i++) { + a[i] = i; + } + /* create empty spot at 49152 to keep ephemeral ports available + * to other programs */ + for(i=49152; i<49152+256; i++) + a[i] = 0; + /* pick out all the IANA assigned ports */ + for(i=0; iana_assigned[i]!=-1; i++) { + if(iana_assigned[i] < num) + a[iana_assigned[i]] = 0; + } +} + +int +cfg_mark_ports(const char* str, int allow, int* avail, int num) +{ + char* mid = strchr(str, '-'); + if(!mid) { + int port = atoi(str); + if(port == 0 && strcmp(str, "0") != 0) { + log_err("cannot parse port number '%s'", str); + return 0; + } + if(port < num) + avail[port] = (allow?port:0); + } else { + int i, low, high = atoi(mid+1); + char buf[16]; + if(high == 0 && strcmp(mid+1, "0") != 0) { + log_err("cannot parse port number '%s'", mid+1); + return 0; + } + if( (int)(mid-str)+1 >= (int)sizeof(buf) ) { + log_err("cannot parse port number '%s'", str); + return 0; + } + if(mid > str) + memcpy(buf, str, (size_t)(mid-str)); + buf[mid-str] = 0; + low = atoi(buf); + if(low == 0 && strcmp(buf, "0") != 0) { + log_err("cannot parse port number '%s'", buf); + return 0; + } + for(i=low; i<=high; i++) { + if(i < num) + avail[i] = (allow?i:0); + } + return 1; + } + return 1; +} + +int +cfg_scan_ports(int* avail, int num) +{ + int i; + int count = 0; + for(i=0; i<num; i++) { + if(avail[i]) + count++; + } + return count; +} + +int cfg_condense_ports(struct config_file* cfg, int** avail) +{ + int num = cfg_scan_ports(cfg->outgoing_avail_ports, 65536); + int i, at = 0; + *avail = NULL; + if(num == 0) + return 0; + *avail = (int*)malloc(sizeof(int)*num); + if(!*avail) + return 0; + for(i=0; i<65536; i++) { + if(cfg->outgoing_avail_ports[i]) + (*avail)[at++] = cfg->outgoing_avail_ports[i]; + } + log_assert(at == num); + return num; +} + +/** print error with file and line number */ +static void ub_c_error_va_list(const char *fmt, va_list args) +{ + cfg_parser->errors++; + fprintf(stderr, "%s:%d: error: ", cfg_parser->filename, + cfg_parser->line); + vfprintf(stderr, fmt, args); + fprintf(stderr, "\n"); +} + +/** print error with file and line number */ +void ub_c_error_msg(const char* fmt, ...) +{ + va_list args; + va_start(args, fmt); + ub_c_error_va_list(fmt, args); + va_end(args); +} + +void ub_c_error(const char *str) +{ + cfg_parser->errors++; + fprintf(stderr, "%s:%d: error: %s\n", cfg_parser->filename, + cfg_parser->line, str); +} + +int ub_c_wrap(void) +{ + return 1; +} + +int cfg_strlist_append(struct config_strlist_head* list, char* item) +{ + struct config_strlist *s; + if(!item || !list) + return 0; + s = (struct config_strlist*)calloc(1, sizeof(struct config_strlist)); + if(!s) + return 0; + s->str = item; + s->next = NULL; + if(list->last) + list->last->next = s; + else + list->first = s; + list->last = s; + return 1; +} + +int +cfg_strlist_insert(struct config_strlist** head, char* item) +{ + struct config_strlist *s; + if(!item || !head) + return 0; + s = (struct config_strlist*)calloc(1, sizeof(struct config_strlist)); + if(!s) + return 0; + s->str = item; + s->next = *head; + *head = s; + return 1; +} + +int +cfg_str2list_insert(struct config_str2list** head, char* item, char* i2) +{ + struct config_str2list *s; + if(!item || !i2 || !head) + return 0; + s = (struct config_str2list*)calloc(1, sizeof(struct config_str2list)); + if(!s) + return 0; + s->str = item; + s->str2 = i2; + s->next = *head; + *head = s; + return 1; +} + +time_t +cfg_convert_timeval(const char* str) +{ + time_t t; + struct tm tm; + memset(&tm, 0, sizeof(tm)); + if(strlen(str) < 14) + return 0; + if(sscanf(str, "%4d%2d%2d%2d%2d%2d", &tm.tm_year, &tm.tm_mon, + &tm.tm_mday, &tm.tm_hour, &tm.tm_min, &tm.tm_sec) != 6) + return 0; + tm.tm_year -= 1900; + tm.tm_mon--; + /* Check values */ + if (tm.tm_year < 70) return 0; + if (tm.tm_mon < 0 || tm.tm_mon > 11) return 0; + if (tm.tm_mday < 1 || tm.tm_mday > 31) return 0; + if (tm.tm_hour < 0 || tm.tm_hour > 23) return 0; + if (tm.tm_min < 0 || tm.tm_min > 59) return 0; + if (tm.tm_sec < 0 || tm.tm_sec > 59) return 0; + /* call ldns conversion function */ + t = sldns_mktime_from_utc(&tm); + return t; +} + +int +cfg_count_numbers(const char* s) +{ + /* format ::= (sp num)+ sp */ + /* num ::= [-](0-9)+ */ + /* sp ::= (space|tab)* */ + int num = 0; + while(*s) { + while(*s && isspace((int)*s)) + s++; + if(!*s) /* end of string */ + break; + if(*s == '-') + s++; + if(!*s) /* only - not allowed */ + return 0; + if(!isdigit((int)*s)) /* bad character */ + return 0; + while(*s && isdigit((int)*s)) + s++; + num++; + } + return num; +} + +/** all digit number */ +static int isalldigit(const char* str, size_t l) +{ + size_t i; + for(i=0; i<l; i++) + if(!isdigit(str[i])) + return 0; + return 1; +} + +int +cfg_parse_memsize(const char* str, size_t* res) +{ + size_t len; + size_t mult = 1; + if(!str || (len=(size_t)strlen(str)) == 0) { + log_err("not a size: '%s'", str); + return 0; + } + if(isalldigit(str, len)) { + *res = (size_t)atol(str); + return 1; + } + /* check appended num */ + while(len>0 && str[len-1]==' ') + len--; + if(len > 1 && str[len-1] == 'b') + len--; + else if(len > 1 && str[len-1] == 'B') + len--; + + if(len > 1 && tolower(str[len-1]) == 'g') + mult = 1024*1024*1024; + else if(len > 1 && tolower(str[len-1]) == 'm') + mult = 1024*1024; + else if(len > 1 && tolower(str[len-1]) == 'k') + mult = 1024; + else if(len > 0 && isdigit(str[len-1])) + mult = 1; + else { + log_err("unknown size specifier: '%s'", str); + return 0; + } + while(len>1 && str[len-2]==' ') + len--; + + if(!isalldigit(str, len-1)) { + log_err("unknown size specifier: '%s'", str); + return 0; + } + *res = ((size_t)atol(str)) * mult; + return 1; +} + +void +config_apply(struct config_file* config) +{ + MAX_TTL = (time_t)config->max_ttl; + MIN_TTL = (time_t)config->min_ttl; + EDNS_ADVERTISED_SIZE = (uint16_t)config->edns_buffer_size; + MINIMAL_RESPONSES = config->minimal_responses; + RRSET_ROUNDROBIN = config->rrset_roundrobin; + log_set_time_asc(config->log_time_ascii); +} + +/** + * Calculate string length of full pathname in original filesys + * @param fname: the path name to convert. + * Must not be null or empty. + * @param cfg: config struct for chroot and chdir (if set). + * @param use_chdir: if false, only chroot is applied. + * @return length of string. + * remember to allocate one more for 0 at end in mallocs. + */ +static size_t +strlen_after_chroot(const char* fname, struct config_file* cfg, int use_chdir) +{ + size_t len = 0; + int slashit = 0; + if(cfg->chrootdir && cfg->chrootdir[0] && + strncmp(cfg->chrootdir, fname, strlen(cfg->chrootdir)) == 0) { + /* already full pathname, return it */ + return strlen(fname); + } + /* chroot */ + if(cfg->chrootdir && cfg->chrootdir[0]) { + /* start with chrootdir */ + len += strlen(cfg->chrootdir); + slashit = 1; + } + /* chdir */ +#ifdef UB_ON_WINDOWS + if(fname[0] != 0 && fname[1] == ':') { + /* full path, no chdir */ + } else +#endif + if(fname[0] == '/' || !use_chdir) { + /* full path, no chdir */ + } else if(cfg->directory && cfg->directory[0]) { + /* prepend chdir */ + if(slashit && cfg->directory[0] != '/') + len++; + if(cfg->chrootdir && cfg->chrootdir[0] && + strncmp(cfg->chrootdir, cfg->directory, + strlen(cfg->chrootdir)) == 0) + len += strlen(cfg->directory)-strlen(cfg->chrootdir); + else len += strlen(cfg->directory); + slashit = 1; + } + /* fname */ + if(slashit && fname[0] != '/') + len++; + len += strlen(fname); + return len; +} + +char* +fname_after_chroot(const char* fname, struct config_file* cfg, int use_chdir) +{ + size_t len = strlen_after_chroot(fname, cfg, use_chdir)+1; + int slashit = 0; + char* buf = (char*)malloc(len); + if(!buf) + return NULL; + buf[0] = 0; + /* is fname already in chroot ? */ + if(cfg->chrootdir && cfg->chrootdir[0] && + strncmp(cfg->chrootdir, fname, strlen(cfg->chrootdir)) == 0) { + /* already full pathname, return it */ + (void)strlcpy(buf, fname, len); + buf[len-1] = 0; + return buf; + } + /* chroot */ + if(cfg->chrootdir && cfg->chrootdir[0]) { + /* start with chrootdir */ + (void)strlcpy(buf, cfg->chrootdir, len); + slashit = 1; + } +#ifdef UB_ON_WINDOWS + if(fname[0] != 0 && fname[1] == ':') { + /* full path, no chdir */ + } else +#endif + /* chdir */ + if(fname[0] == '/' || !use_chdir) { + /* full path, no chdir */ + } else if(cfg->directory && cfg->directory[0]) { + /* prepend chdir */ + if(slashit && cfg->directory[0] != '/') + (void)strlcat(buf, "/", len); + /* is the directory already in the chroot? */ + if(cfg->chrootdir && cfg->chrootdir[0] && + strncmp(cfg->chrootdir, cfg->directory, + strlen(cfg->chrootdir)) == 0) + (void)strlcat(buf, cfg->directory+strlen(cfg->chrootdir), + len); + else (void)strlcat(buf, cfg->directory, len); + slashit = 1; + } + /* fname */ + if(slashit && fname[0] != '/') + (void)strlcat(buf, "/", len); + (void)strlcat(buf, fname, len); + buf[len-1] = 0; + return buf; +} + +/** return next space character in string */ +static char* next_space_pos(const char* str) +{ + char* sp = strchr(str, ' '); + char* tab = strchr(str, '\t'); + if(!tab && !sp) + return NULL; + if(!sp) return tab; + if(!tab) return sp; + return (sp<tab)?sp:tab; +} + +/** return last space character in string */ +static char* last_space_pos(const char* str) +{ + char* sp = strrchr(str, ' '); + char* tab = strrchr(str, '\t'); + if(!tab && !sp) + return NULL; + if(!sp) return tab; + if(!tab) return sp; + return (sp>tab)?sp:tab; +} + +int +cfg_parse_local_zone(struct config_file* cfg, const char* val) +{ + const char *type, *name_end, *name; + char buf[256]; + + /* parse it as: [zone_name] [between stuff] [zone_type] */ + name = val; + while(*name && isspace(*name)) + name++; + if(!*name) { + log_err("syntax error: too short: %s", val); + return 0; + } + name_end = next_space_pos(name); + if(!name_end || !*name_end) { + log_err("syntax error: expected zone type: %s", val); + return 0; + } + if (name_end - name > 255) { + log_err("syntax error: bad zone name: %s", val); + return 0; + } + (void)strlcpy(buf, name, sizeof(buf)); + buf[name_end-name] = '\0'; + + type = last_space_pos(name_end); + while(type && *type && isspace(*type)) + type++; + if(!type || !*type) { + log_err("syntax error: expected zone type: %s", val); + return 0; + } + + if(strcmp(type, "nodefault")==0) { + return cfg_strlist_insert(&cfg->local_zones_nodefault, + strdup(name)); + } else { + return cfg_str2list_insert(&cfg->local_zones, strdup(buf), + strdup(type)); + } +} + +char* cfg_ptr_reverse(char* str) +{ + char* ip, *ip_end; + char* name; + char* result; + char buf[1024]; + struct sockaddr_storage addr; + socklen_t addrlen; + + /* parse it as: [IP] [between stuff] [name] */ + ip = str; + while(*ip && isspace(*ip)) + ip++; + if(!*ip) { + log_err("syntax error: too short: %s", str); + return NULL; + } + ip_end = next_space_pos(ip); + if(!ip_end || !*ip_end) { + log_err("syntax error: expected name: %s", str); + return NULL; + } + + name = last_space_pos(ip_end); + if(!name || !*name) { + log_err("syntax error: expected name: %s", str); + return NULL; + } + + sscanf(ip, "%100s", buf); + buf[sizeof(buf)-1]=0; + + if(!ipstrtoaddr(buf, UNBOUND_DNS_PORT, &addr, &addrlen)) { + log_err("syntax error: cannot parse address: %s", str); + return NULL; + } + + /* reverse IPv4: + * ddd.ddd.ddd.ddd.in-addr-arpa. + * IPv6: (h.){32}.ip6.arpa. */ + + if(addr_is_ip6(&addr, addrlen)) { + uint8_t ad[16]; + const char* hex = "0123456789abcdef"; + char *p = buf; + int i; + memmove(ad, &((struct sockaddr_in6*)&addr)->sin6_addr, + sizeof(ad)); + for(i=15; i>=0; i--) { + uint8_t b = ad[i]; + *p++ = hex[ (b&0x0f) ]; + *p++ = '.'; + *p++ = hex[ (b&0xf0) >> 4 ]; + *p++ = '.'; + } + snprintf(buf+16*4, sizeof(buf)-16*4, "ip6.arpa. "); + } else { + uint8_t ad[4]; + memmove(ad, &((struct sockaddr_in*)&addr)->sin_addr, + sizeof(ad)); + snprintf(buf, sizeof(buf), "%u.%u.%u.%u.in-addr.arpa. ", + (unsigned)ad[3], (unsigned)ad[2], + (unsigned)ad[1], (unsigned)ad[0]); + } + + /* printed the reverse address, now the between goop and name on end */ + while(*ip_end && isspace(*ip_end)) + ip_end++; + if(name>ip_end) { + snprintf(buf+strlen(buf), sizeof(buf)-strlen(buf), "%.*s", + (int)(name-ip_end), ip_end); + } + snprintf(buf+strlen(buf), sizeof(buf)-strlen(buf), " PTR %s", name); + + result = strdup(buf); + if(!result) { + log_err("out of memory parsing %s", str); + return NULL; + } + return result; +} + +#ifdef UB_ON_WINDOWS +char* +w_lookup_reg_str(const char* key, const char* name) +{ + HKEY hk = NULL; + DWORD type = 0; + BYTE buf[1024]; + DWORD len = (DWORD)sizeof(buf); + LONG ret; + char* result = NULL; + ret = RegOpenKeyEx(HKEY_LOCAL_MACHINE, key, 0, KEY_READ, &hk); + if(ret == ERROR_FILE_NOT_FOUND) + return NULL; /* key does not exist */ + else if(ret != ERROR_SUCCESS) { + log_err("RegOpenKeyEx failed"); + return NULL; + } + ret = RegQueryValueEx(hk, (LPCTSTR)name, 0, &type, buf, &len); + if(RegCloseKey(hk)) + log_err("RegCloseKey"); + if(ret == ERROR_FILE_NOT_FOUND) + return NULL; /* name does not exist */ + else if(ret != ERROR_SUCCESS) { + log_err("RegQueryValueEx failed"); + return NULL; + } + if(type == REG_SZ || type == REG_MULTI_SZ || type == REG_EXPAND_SZ) { + buf[sizeof(buf)-1] = 0; + buf[sizeof(buf)-2] = 0; /* for multi_sz */ + result = strdup((char*)buf); + if(!result) log_err("out of memory"); + } + return result; +} +#endif /* UB_ON_WINDOWS */ + +void errinf(struct module_qstate* qstate, const char* str) +{ + struct config_strlist* p; + if(qstate->env->cfg->val_log_level < 2 || !str) + return; + p = (struct config_strlist*)regional_alloc(qstate->region, sizeof(*p)); + if(!p) { + log_err("malloc failure in validator-error-info string"); + return; + } + p->next = NULL; + p->str = regional_strdup(qstate->region, str); + if(!p->str) { + log_err("malloc failure in validator-error-info string"); + return; + } + /* add at end */ + if(qstate->errinf) { + struct config_strlist* q = qstate->errinf; + while(q->next) + q = q->next; + q->next = p; + } else qstate->errinf = p; +} + +void errinf_origin(struct module_qstate* qstate, struct sock_list *origin) +{ + struct sock_list* p; + if(qstate->env->cfg->val_log_level < 2) + return; + for(p=origin; p; p=p->next) { + char buf[256]; + if(p == origin) + snprintf(buf, sizeof(buf), "from "); + else snprintf(buf, sizeof(buf), "and "); + if(p->len == 0) + snprintf(buf+strlen(buf), sizeof(buf)-strlen(buf), + "cache"); + else + addr_to_str(&p->addr, p->len, buf+strlen(buf), + sizeof(buf)-strlen(buf)); + errinf(qstate, buf); + } +} + +char* errinf_to_str(struct module_qstate* qstate) +{ + char buf[20480]; + char* p = buf; + size_t left = sizeof(buf); + struct config_strlist* s; + char dname[LDNS_MAX_DOMAINLEN+1]; + char t[16], c[16]; + sldns_wire2str_type_buf(qstate->qinfo.qtype, t, sizeof(t)); + sldns_wire2str_class_buf(qstate->qinfo.qclass, c, sizeof(c)); + dname_str(qstate->qinfo.qname, dname); + snprintf(p, left, "validation failure <%s %s %s>:", dname, t, c); + left -= strlen(p); p += strlen(p); + if(!qstate->errinf) + snprintf(p, left, " misc failure"); + else for(s=qstate->errinf; s; s=s->next) { + snprintf(p, left, " %s", s->str); + left -= strlen(p); p += strlen(p); + } + p = strdup(buf); + if(!p) + log_err("malloc failure in errinf_to_str"); + return p; +} + +void errinf_rrset(struct module_qstate* qstate, struct ub_packed_rrset_key *rr) +{ + char buf[1024]; + char dname[LDNS_MAX_DOMAINLEN+1]; + char t[16], c[16]; + if(qstate->env->cfg->val_log_level < 2 || !rr) + return; + sldns_wire2str_type_buf(ntohs(rr->rk.type), t, sizeof(t)); + sldns_wire2str_class_buf(ntohs(rr->rk.rrset_class), c, sizeof(c)); + dname_str(rr->rk.dname, dname); + snprintf(buf, sizeof(buf), "for <%s %s %s>", dname, t, c); + errinf(qstate, buf); +} + +void errinf_dname(struct module_qstate* qstate, const char* str, uint8_t* dname) +{ + char b[1024]; + char buf[LDNS_MAX_DOMAINLEN+1]; + if(qstate->env->cfg->val_log_level < 2 || !str || !dname) + return; + dname_str(dname, buf); + snprintf(b, sizeof(b), "%s %s", str, buf); + errinf(qstate, b); +} diff --git a/external/unbound/util/config_file.h b/external/unbound/util/config_file.h new file mode 100644 index 000000000..49ffbdde4 --- /dev/null +++ b/external/unbound/util/config_file.h @@ -0,0 +1,704 @@ +/* + * util/config_file.h - reads and stores the config file for unbound. + * + * Copyright (c) 2007, NLnet Labs. All rights reserved. + * + * This software is open source. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * Neither the name of the NLNET LABS nor the names of its contributors may + * be used to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/** + * \file + * + * This file contains functions for the config file. + */ + +#ifndef UTIL_CONFIG_FILE_H +#define UTIL_CONFIG_FILE_H +struct config_stub; +struct config_strlist; +struct config_str2list; +struct module_qstate; +struct sock_list; +struct ub_packed_rrset_key; + +/** + * The configuration options. + * Strings are malloced. + */ +struct config_file { + /** verbosity level as specified in the config file */ + int verbosity; + + /** statistics interval (in seconds) */ + int stat_interval; + /** if false, statistics values are reset after printing them */ + int stat_cumulative; + /** if true, the statistics are kept in greater detail */ + int stat_extended; + + /** number of threads to create */ + int num_threads; + + /** port on which queries are answered. */ + int port; + /** do ip4 query support. */ + int do_ip4; + /** do ip6 query support. */ + int do_ip6; + /** do udp query support. */ + int do_udp; + /** do tcp query support. */ + int do_tcp; + /** tcp upstream queries (no UDP upstream queries) */ + int tcp_upstream; + + /** private key file for dnstcp-ssl service (enabled if not NULL) */ + char* ssl_service_key; + /** public key file for dnstcp-ssl service */ + char* ssl_service_pem; + /** port on which to provide ssl service */ + int ssl_port; + /** if outgoing tcp connections use SSL */ + int ssl_upstream; + + /** outgoing port range number of ports (per thread) */ + int outgoing_num_ports; + /** number of outgoing tcp buffers per (per thread) */ + size_t outgoing_num_tcp; + /** number of incoming tcp buffers per (per thread) */ + size_t incoming_num_tcp; + /** allowed udp port numbers, array with 0 if not allowed */ + int* outgoing_avail_ports; + + /** EDNS buffer size to use */ + size_t edns_buffer_size; + /** number of bytes buffer size for DNS messages */ + size_t msg_buffer_size; + /** size of the message cache */ + size_t msg_cache_size; + /** slabs in the message cache. */ + size_t msg_cache_slabs; + /** number of queries every thread can service */ + size_t num_queries_per_thread; + /** number of msec to wait before items can be jostled out */ + size_t jostle_time; + /** size of the rrset cache */ + size_t rrset_cache_size; + /** slabs in the rrset cache */ + size_t rrset_cache_slabs; + /** host cache ttl in seconds */ + int host_ttl; + /** number of slabs in the infra host cache */ + size_t infra_cache_slabs; + /** max number of hosts in the infra cache */ + size_t infra_cache_numhosts; + /** delay close of udp-timeouted ports, if 0 no delayclose. in msec */ + int delay_close; + + /** the target fetch policy for the iterator */ + char* target_fetch_policy; + + /** automatic interface for incoming messages. Uses ipv6 remapping, + * and recvmsg/sendmsg ancillary data to detect interfaces, boolean */ + int if_automatic; + /** SO_RCVBUF size to set on port 53 UDP socket */ + size_t so_rcvbuf; + /** SO_SNDBUF size to set on port 53 UDP socket */ + size_t so_sndbuf; + /** SO_REUSEPORT requested on port 53 sockets */ + int so_reuseport; + + /** number of interfaces to open. If 0 default all interfaces. */ + int num_ifs; + /** interface description strings (IP addresses) */ + char **ifs; + + /** number of outgoing interfaces to open. + * If 0 default all interfaces. */ + int num_out_ifs; + /** outgoing interface description strings (IP addresses) */ + char **out_ifs; + + /** the root hints */ + struct config_strlist* root_hints; + /** the stub definitions, linked list */ + struct config_stub* stubs; + /** the forward zone definitions, linked list */ + struct config_stub* forwards; + /** list of donotquery addresses, linked list */ + struct config_strlist* donotqueryaddrs; + /** list of access control entries, linked list */ + struct config_str2list* acls; + /** use default localhost donotqueryaddr entries */ + int donotquery_localhost; + + /** harden against very small edns buffer sizes */ + int harden_short_bufsize; + /** harden against very large query sizes */ + int harden_large_queries; + /** harden against spoofed glue (out of zone data) */ + int harden_glue; + /** harden against receiving no DNSSEC data for trust anchor */ + int harden_dnssec_stripped; + /** harden against queries that fall under known nxdomain names */ + int harden_below_nxdomain; + /** harden the referral path, query for NS,A,AAAA and validate */ + int harden_referral_path; + /** use 0x20 bits in query as random ID bits */ + int use_caps_bits_for_id; + /** strip away these private addrs from answers, no DNS Rebinding */ + struct config_strlist* private_address; + /** allow domain (and subdomains) to use private address space */ + struct config_strlist* private_domain; + /** what threshold for unwanted action. */ + size_t unwanted_threshold; + /** the number of seconds maximal TTL used for RRsets and messages */ + int max_ttl; + /** the number of seconds minimum TTL used for RRsets and messages */ + int min_ttl; + /** if prefetching of messages should be performed. */ + int prefetch; + /** if prefetching of DNSKEYs should be performed. */ + int prefetch_key; + + /** chrootdir, if not "" or chroot will be done */ + char* chrootdir; + /** username to change to, if not "". */ + char* username; + /** working directory */ + char* directory; + /** filename to log to. */ + char* logfile; + /** pidfile to write pid to. */ + char* pidfile; + + /** should log messages be sent to syslogd */ + int use_syslog; + /** log timestamp in ascii UTC */ + int log_time_ascii; + /** log queries with one line per query */ + int log_queries; + + /** do not report identity (id.server, hostname.bind) */ + int hide_identity; + /** do not report version (version.server, version.bind) */ + int hide_version; + /** identity, hostname is returned if "". */ + char* identity; + /** version, package version returned if "". */ + char* version; + + /** the module configuration string */ + char* module_conf; + + /** files with trusted DS and DNSKEYs in zonefile format, list */ + struct config_strlist* trust_anchor_file_list; + /** list of trustanchor keys, linked list */ + struct config_strlist* trust_anchor_list; + /** files with 5011 autotrust tracked keys */ + struct config_strlist* auto_trust_anchor_file_list; + /** files with trusted DNSKEYs in named.conf format, list */ + struct config_strlist* trusted_keys_file_list; + /** DLV anchor file */ + char* dlv_anchor_file; + /** DLV anchor inline */ + struct config_strlist* dlv_anchor_list; + /** insecure domain list */ + struct config_strlist* domain_insecure; + + /** if not 0, this value is the validation date for RRSIGs */ + int32_t val_date_override; + /** the minimum for signature clock skew */ + int32_t val_sig_skew_min; + /** the maximum for signature clock skew */ + int32_t val_sig_skew_max; + /** this value sets the number of seconds before revalidating bogus */ + int bogus_ttl; + /** should validator clean additional section for secure msgs */ + int val_clean_additional; + /** log bogus messages by the validator */ + int val_log_level; + /** squelch val_log_level to log - this is library goes to callback */ + int val_log_squelch; + /** should validator allow bogus messages to go through */ + int val_permissive_mode; + /** ignore the CD flag in incoming queries and refuse them bogus data */ + int ignore_cd; + /** nsec3 maximum iterations per key size, string */ + char* val_nsec3_key_iterations; + /** autotrust add holddown time, in seconds */ + unsigned int add_holddown; + /** autotrust del holddown time, in seconds */ + unsigned int del_holddown; + /** autotrust keep_missing time, in seconds. 0 is forever. */ + unsigned int keep_missing; + + /** size of the key cache */ + size_t key_cache_size; + /** slabs in the key cache. */ + size_t key_cache_slabs; + /** size of the neg cache */ + size_t neg_cache_size; + + /** local zones config */ + struct config_str2list* local_zones; + /** local zones nodefault list */ + struct config_strlist* local_zones_nodefault; + /** local data RRs configged */ + struct config_strlist* local_data; + /** unblock lan zones (reverse lookups for 10/8 and so on) */ + int unblock_lan_zones; + + /** remote control section. enable toggle. */ + int remote_control_enable; + /** the interfaces the remote control should listen on */ + struct config_strlist* control_ifs; + /** port number for the control port */ + int control_port; + /** private key file for server */ + char* server_key_file; + /** certificate file for server */ + char* server_cert_file; + /** private key file for unbound-control */ + char* control_key_file; + /** certificate file for unbound-control */ + char* control_cert_file; + + /** Python script file */ + char* python_script; + + /** daemonize, i.e. fork into the background. */ + int do_daemonize; + + /* minimal response when positive answer */ + int minimal_responses; + + /* RRSet roundrobin */ + int rrset_roundrobin; + + /* maximum UDP response size */ + size_t max_udp_size; + + /* DNS64 prefix */ + char* dns64_prefix; + + /* Synthetize all AAAA record despite the presence of an authoritative one */ + int dns64_synthall; + + /** true to enable dnstap support */ + int dnstap; + /** dnstap socket path */ + char* dnstap_socket_path; + /** true to send "identity" via dnstap */ + int dnstap_send_identity; + /** true to send "version" via dnstap */ + int dnstap_send_version; + /** dnstap "identity", hostname is used if "". */ + char* dnstap_identity; + /** dnstap "version", package version is used if "". */ + char* dnstap_version; + + /** true to log dnstap RESOLVER_QUERY message events */ + int dnstap_log_resolver_query_messages; + /** true to log dnstap RESOLVER_RESPONSE message events */ + int dnstap_log_resolver_response_messages; + /** true to log dnstap CLIENT_QUERY message events */ + int dnstap_log_client_query_messages; + /** true to log dnstap CLIENT_RESPONSE message events */ + int dnstap_log_client_response_messages; + /** true to log dnstap FORWARDER_QUERY message events */ + int dnstap_log_forwarder_query_messages; + /** true to log dnstap FORWARDER_RESPONSE message events */ + int dnstap_log_forwarder_response_messages; +}; + +/** + * Stub config options + */ +struct config_stub { + /** next in list */ + struct config_stub* next; + /** domain name (in text) of the stub apex domain */ + char* name; + /** list of stub nameserver hosts (domain name) */ + struct config_strlist* hosts; + /** list of stub nameserver addresses (IP address) */ + struct config_strlist* addrs; + /** if stub-prime is set */ + int isprime; + /** if forward-first is set (failover to without if fails) */ + int isfirst; +}; + +/** + * List of strings for config options + */ +struct config_strlist { + /** next item in list */ + struct config_strlist* next; + /** config option string */ + char* str; +}; + +/** + * List of two strings for config options + */ +struct config_str2list { + /** next item in list */ + struct config_str2list* next; + /** first string */ + char* str; + /** second string */ + char* str2; +}; + +/** List head for strlist processing, used for append operation. */ +struct config_strlist_head { + /** first in list of text items */ + struct config_strlist* first; + /** last in list of text items */ + struct config_strlist* last; +}; + +/** + * Create config file structure. Filled with default values. + * @return: the new structure or NULL on memory error. + */ +struct config_file* config_create(void); + +/** + * Create config file structure for library use. Filled with default values. + * @return: the new structure or NULL on memory error. + */ +struct config_file* config_create_forlib(void); + +/** + * Read the config file from the specified filename. + * @param config: where options are stored into, must be freshly created. + * @param filename: name of configfile. If NULL nothing is done. + * @param chroot: if not NULL, the chroot dir currently in use (for include). + * @return: false on error. In that case errno is set, ENOENT means + * file not found. + */ +int config_read(struct config_file* config, const char* filename, + const char* chroot); + +/** + * Destroy the config file structure. + * @param config: to delete. + */ +void config_delete(struct config_file* config); + +/** + * Apply config to global constants; this routine is called in single thread. + * @param config: to apply. Side effect: global constants change. + */ +void config_apply(struct config_file* config); + +/** + * Set the given keyword to the given value. + * @param config: where to store config + * @param option: option name, including the ':' character. + * @param value: value, this string is copied if needed, or parsed. + * The caller owns the value string. + * @return 0 on error (malloc or syntax error). + */ +int config_set_option(struct config_file* config, const char* option, + const char* value); + +/** + * Call print routine for the given option. + * @param cfg: config. + * @param opt: option name without trailing :. + * This is different from config_set_option. + * @param func: print func, called as (str, arg) for every data element. + * @param arg: user argument for print func. + * @return false if the option name is not supported (syntax error). + */ +int config_get_option(struct config_file* cfg, const char* opt, + void (*func)(char*,void*), void* arg); + +/** + * Get an option and return strlist + * @param cfg: config file + * @param opt: option name. + * @param list: list is returned here. malloced, caller must free it. + * @return 0=OK, 1=syntax error, 2=malloc failed. + */ +int config_get_option_list(struct config_file* cfg, const char* opt, + struct config_strlist** list); + +/** + * Get an option and collate results into string + * @param cfg: config file + * @param opt: option name. + * @param str: string. malloced, caller must free it. + * @return 0=OK, 1=syntax error, 2=malloc failed. + */ +int config_get_option_collate(struct config_file* cfg, const char* opt, + char** str); + +/** + * function to print to a file, use as func with config_get_option. + * @param line: text to print. \n appended. + * @param arg: pass a FILE*, like stdout. + */ +void config_print_func(char* line, void* arg); + +/** + * function to collate the text strings into a strlist_head. + * @param line: text to append. + * @param arg: pass a strlist_head structure. zeroed on start. + */ +void config_collate_func(char* line, void* arg); + +/** + * take a strlist_head list and return a malloc string. separated with newline. + * @param list: strlist first to collate. zeroes return "". + * @return NULL on malloc failure. Or if malloc failure happened in strlist. + */ +char* config_collate_cat(struct config_strlist* list); + +/** + * Append text at end of list. + * @param list: list head. zeroed at start. + * @param item: new item. malloced by caller. if NULL the insertion fails. + * @return true on success. + */ +int cfg_strlist_append(struct config_strlist_head* list, char* item); + +/** + * Insert string into strlist. + * @param head: pointer to strlist head variable. + * @param item: new item. malloced by caller. If NULL the insertion fails. + * @return: true on success. + */ +int cfg_strlist_insert(struct config_strlist** head, char* item); + +/** + * Insert string into str2list. + * @param head: pointer to str2list head variable. + * @param item: new item. malloced by caller. If NULL the insertion fails. + * @param i2: 2nd string, malloced by caller. If NULL the insertion fails. + * @return: true on success. + */ +int cfg_str2list_insert(struct config_str2list** head, char* item, char* i2); + +/** + * Delete items in config string list. + * @param list: list. + */ +void config_delstrlist(struct config_strlist* list); + +/** + * Delete items in config double string list. + * @param list: list. + */ +void config_deldblstrlist(struct config_str2list* list); + +/** + * Delete items in config stub list. + * @param list: list. + */ +void config_delstubs(struct config_stub* list); + +/** + * Convert 14digit to time value + * @param str: string of 14 digits + * @return time value or 0 for error. + */ +time_t cfg_convert_timeval(const char* str); + +/** + * Count number of values in the string. + * format ::= (sp num)+ sp + * num ::= [-](0-9)+ + * sp ::= (space|tab)* + * + * @param str: string + * @return: 0 on parse error, or empty string, else + * number of integer values in the string. + */ +int cfg_count_numbers(const char* str); + +/** + * Convert a 'nice' memory or file size into a bytecount + * From '100k' to 102400. and so on. Understands kKmMgG. + * k=1024, m=1024*1024, g=1024*1024*1024. + * @param str: string + * @param res: result is stored here, size in bytes. + * @return: true if parsed correctly, or 0 on a parse error (and an error + * is logged). + */ +int cfg_parse_memsize(const char* str, size_t* res); + +/** + * Parse local-zone directive into two strings and register it in the config. + * @param cfg: to put it in. + * @param val: argument strings to local-zone, "example.com nodefault". + * @return: false on failure + */ +int cfg_parse_local_zone(struct config_file* cfg, const char* val); + +/** + * Mark "number" or "low-high" as available or not in ports array. + * @param str: string in input + * @param allow: give true if this range is permitted. + * @param avail: the array from cfg. + * @param num: size of the array (65536). + * @return: true if parsed correctly, or 0 on a parse error (and an error + * is logged). + */ +int cfg_mark_ports(const char* str, int allow, int* avail, int num); + +/** + * Get a condensed list of ports returned. allocated. + * @param cfg: config file. + * @param avail: the available ports array is returned here. + * @return: number of ports in array or 0 on error. + */ +int cfg_condense_ports(struct config_file* cfg, int** avail); + +/** + * Scan ports available + * @param avail: the array from cfg. + * @param num: size of the array (65536). + * @return the number of ports available for use. + */ +int cfg_scan_ports(int* avail, int num); + +/** + * Convert a filename to full pathname in original filesys + * @param fname: the path name to convert. + * Must not be null or empty. + * @param cfg: config struct for chroot and chdir (if set). + * @param use_chdir: if false, only chroot is applied. + * @return pointer to malloced buffer which is: [chroot][chdir]fname + * or NULL on malloc failure. + */ +char* fname_after_chroot(const char* fname, struct config_file* cfg, + int use_chdir); + +/** + * Convert a ptr shorthand into a full reverse-notation PTR record. + * @param str: input string, "IP name" + * @return: malloced string "reversed-ip-name PTR name" + */ +char* cfg_ptr_reverse(char* str); + +/** + * Append text to the error info for validation. + * @param qstate: query state. + * @param str: copied into query region and appended. + * Failures to allocate are logged. + */ +void errinf(struct module_qstate* qstate, const char* str); + +/** + * Append text to error info: from 1.2.3.4 + * @param qstate: query state. + * @param origin: sock list with origin of trouble. + * Every element added. + * If NULL: nothing is added. + * if 0len element: 'from cache' is added. + */ +void errinf_origin(struct module_qstate* qstate, struct sock_list *origin); + +/** + * Append text to error info: for RRset name type class + * @param qstate: query state. + * @param rr: rrset_key. + */ +void errinf_rrset(struct module_qstate* qstate, struct ub_packed_rrset_key *rr); + +/** + * Append text to error info: str dname + * @param qstate: query state. + * @param str: explanation string + * @param dname: the dname. + */ +void errinf_dname(struct module_qstate* qstate, const char* str, + uint8_t* dname); + +/** + * Create error info in string + * @param qstate: query state. + * @return string or NULL on malloc failure (already logged). + * This string is malloced and has to be freed by caller. + */ +char* errinf_to_str(struct module_qstate* qstate); + +/** + * Used during options parsing + */ +struct config_parser_state { + /** name of file being parser */ + char* filename; + /** line number in the file, starts at 1 */ + int line; + /** number of errors encountered */ + int errors; + /** the result of parsing is stored here. */ + struct config_file* cfg; + /** the current chroot dir (or NULL if none) */ + const char* chroot; +}; + +/** global config parser object used during config parsing */ +extern struct config_parser_state* cfg_parser; +/** init lex state */ +void init_cfg_parse(void); +/** lex in file */ +extern FILE* ub_c_in; +/** lex out file */ +extern FILE* ub_c_out; +/** the yacc lex generated parse function */ +int ub_c_parse(void); +/** the lexer function */ +int ub_c_lex(void); +/** wrap function */ +int ub_c_wrap(void); +/** parsing helpers: print error with file and line numbers */ +void ub_c_error(const char* msg); +/** parsing helpers: print error with file and line numbers */ +void ub_c_error_msg(const char* fmt, ...) ATTR_FORMAT(printf, 1, 2); + +#ifdef UB_ON_WINDOWS +/** + * Obtain registry string (if it exists). + * @param key: key string + * @param name: name of value to fetch. + * @return malloced string with the result or NULL if it did not + * exist on an error (logged with log_err) was encountered. + */ +char* w_lookup_reg_str(const char* key, const char* name); +#endif /* UB_ON_WINDOWS */ + +#endif /* UTIL_CONFIG_FILE_H */ diff --git a/external/unbound/util/configlexer.c b/external/unbound/util/configlexer.c new file mode 100644 index 000000000..f1336a256 --- /dev/null +++ b/external/unbound/util/configlexer.c @@ -0,0 +1,4023 @@ +#include "config.h" +#include "util/configyyrename.h" + +#line 3 "<stdout>" + +#define YY_INT_ALIGNED short int + +/* A lexical scanner generated by flex */ + +#define FLEX_SCANNER +#define YY_FLEX_MAJOR_VERSION 2 +#define YY_FLEX_MINOR_VERSION 5 +#define YY_FLEX_SUBMINOR_VERSION 36 +#if YY_FLEX_SUBMINOR_VERSION > 0 +#define FLEX_BETA +#endif + +/* First, we deal with platform-specific or compiler-specific issues. */ + +/* begin standard C headers. */ +#include <stdio.h> +#include <string.h> +#include <errno.h> +#include <stdlib.h> + +/* end standard C headers. */ + +/* flex integer type definitions */ + +#ifndef FLEXINT_H +#define FLEXINT_H + +/* C99 systems have <inttypes.h>. Non-C99 systems may or may not. */ + +#if defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L + +/* C99 says to define __STDC_LIMIT_MACROS before including stdint.h, + * if you want the limit (max/min) macros for int types. + */ +#ifndef __STDC_LIMIT_MACROS +#define __STDC_LIMIT_MACROS 1 +#endif + +#include <inttypes.h> +typedef int8_t flex_int8_t; +typedef uint8_t flex_uint8_t; +typedef int16_t flex_int16_t; +typedef uint16_t flex_uint16_t; +typedef int32_t flex_int32_t; +typedef uint32_t flex_uint32_t; +#else +typedef signed char flex_int8_t; +typedef short int flex_int16_t; +typedef int flex_int32_t; +typedef unsigned char flex_uint8_t; +typedef unsigned short int flex_uint16_t; +typedef unsigned int flex_uint32_t; + +/* Limits of integral types. */ +#ifndef INT8_MIN +#define INT8_MIN (-128) +#endif +#ifndef INT16_MIN +#define INT16_MIN (-32767-1) +#endif +#ifndef INT32_MIN +#define INT32_MIN (-2147483647-1) +#endif +#ifndef INT8_MAX +#define INT8_MAX (127) +#endif +#ifndef INT16_MAX +#define INT16_MAX (32767) +#endif +#ifndef INT32_MAX +#define INT32_MAX (2147483647) +#endif +#ifndef UINT8_MAX +#define UINT8_MAX (255U) +#endif +#ifndef UINT16_MAX +#define UINT16_MAX (65535U) +#endif +#ifndef UINT32_MAX +#define UINT32_MAX (4294967295U) +#endif + +#endif /* ! C99 */ + +#endif /* ! FLEXINT_H */ + +#ifdef __cplusplus + +/* The "const" storage-class-modifier is valid. */ +#define YY_USE_CONST + +#else /* ! __cplusplus */ + +/* C99 requires __STDC__ to be defined as 1. */ +#if defined (__STDC__) + +#define YY_USE_CONST + +#endif /* defined (__STDC__) */ +#endif /* ! __cplusplus */ + +#ifdef YY_USE_CONST +#define yyconst const +#else +#define yyconst +#endif + +/* Returned upon end-of-file. */ +#define YY_NULL 0 + +/* Promotes a possibly negative, possibly signed char to an unsigned + * integer for use as an array index. If the signed char is negative, + * we want to instead treat it as an 8-bit unsigned char, hence the + * double cast. + */ +#define YY_SC_TO_UI(c) ((unsigned int) (unsigned char) c) + +/* Enter a start condition. This macro really ought to take a parameter, + * but we do it the disgusting crufty way forced on us by the ()-less + * definition of BEGIN. + */ +#define BEGIN (yy_start) = 1 + 2 * + +/* Translate the current start state into a value that can be later handed + * to BEGIN to return to the state. The YYSTATE alias is for lex + * compatibility. + */ +#define YY_START (((yy_start) - 1) / 2) +#define YYSTATE YY_START + +/* Action number for EOF rule of a given start state. */ +#define YY_STATE_EOF(state) (YY_END_OF_BUFFER + state + 1) + +/* Special action meaning "start processing a new file". */ +#define YY_NEW_FILE yyrestart(yyin ) + +#define YY_END_OF_BUFFER_CHAR 0 + +/* Size of default input buffer. */ +#ifndef YY_BUF_SIZE +#define YY_BUF_SIZE 16384 +#endif + +/* The state buf must be large enough to hold one state per character in the main buffer. + */ +#define YY_STATE_BUF_SIZE ((YY_BUF_SIZE + 2) * sizeof(yy_state_type)) + +#ifndef YY_TYPEDEF_YY_BUFFER_STATE +#define YY_TYPEDEF_YY_BUFFER_STATE +typedef struct yy_buffer_state *YY_BUFFER_STATE; +#endif + +#ifndef YY_TYPEDEF_YY_SIZE_T +#define YY_TYPEDEF_YY_SIZE_T +typedef size_t yy_size_t; +#endif + +extern yy_size_t yyleng; + +extern FILE *yyin, *yyout; + +#define EOB_ACT_CONTINUE_SCAN 0 +#define EOB_ACT_END_OF_FILE 1 +#define EOB_ACT_LAST_MATCH 2 + + #define YY_LESS_LINENO(n) + +/* Return all but the first "n" matched characters back to the input stream. */ +#define yyless(n) \ + do \ + { \ + /* Undo effects of setting up yytext. */ \ + int yyless_macro_arg = (n); \ + YY_LESS_LINENO(yyless_macro_arg);\ + *yy_cp = (yy_hold_char); \ + YY_RESTORE_YY_MORE_OFFSET \ + (yy_c_buf_p) = yy_cp = yy_bp + yyless_macro_arg - YY_MORE_ADJ; \ + YY_DO_BEFORE_ACTION; /* set up yytext again */ \ + } \ + while ( 0 ) + +#define unput(c) yyunput( c, (yytext_ptr) ) + +#ifndef YY_STRUCT_YY_BUFFER_STATE +#define YY_STRUCT_YY_BUFFER_STATE +struct yy_buffer_state + { + FILE *yy_input_file; + + char *yy_ch_buf; /* input buffer */ + char *yy_buf_pos; /* current position in input buffer */ + + /* Size of input buffer in bytes, not including room for EOB + * characters. + */ + yy_size_t yy_buf_size; + + /* Number of characters read into yy_ch_buf, not including EOB + * characters. + */ + yy_size_t yy_n_chars; + + /* Whether we "own" the buffer - i.e., we know we created it, + * and can realloc() it to grow it, and should free() it to + * delete it. + */ + int yy_is_our_buffer; + + /* Whether this is an "interactive" input source; if so, and + * if we're using stdio for input, then we want to use getc() + * instead of fread(), to make sure we stop fetching input after + * each newline. + */ + int yy_is_interactive; + + /* Whether we're considered to be at the beginning of a line. + * If so, '^' rules will be active on the next match, otherwise + * not. + */ + int yy_at_bol; + + int yy_bs_lineno; /**< The line count. */ + int yy_bs_column; /**< The column count. */ + + /* Whether to try to fill the input buffer when we reach the + * end of it. + */ + int yy_fill_buffer; + + int yy_buffer_status; + +#define YY_BUFFER_NEW 0 +#define YY_BUFFER_NORMAL 1 + /* When an EOF's been seen but there's still some text to process + * then we mark the buffer as YY_EOF_PENDING, to indicate that we + * shouldn't try reading from the input source any more. We might + * still have a bunch of tokens to match, though, because of + * possible backing-up. + * + * When we actually see the EOF, we change the status to "new" + * (via yyrestart()), so that the user can continue scanning by + * just pointing yyin at a new input file. + */ +#define YY_BUFFER_EOF_PENDING 2 + + }; +#endif /* !YY_STRUCT_YY_BUFFER_STATE */ + +/* Stack of input buffers. */ +static size_t yy_buffer_stack_top = 0; /**< index of top of stack. */ +static size_t yy_buffer_stack_max = 0; /**< capacity of stack. */ +static YY_BUFFER_STATE * yy_buffer_stack = 0; /**< Stack as an array. */ + +/* We provide macros for accessing buffer states in case in the + * future we want to put the buffer states in a more general + * "scanner state". + * + * Returns the top of the stack, or NULL. + */ +#define YY_CURRENT_BUFFER ( (yy_buffer_stack) \ + ? (yy_buffer_stack)[(yy_buffer_stack_top)] \ + : NULL) + +/* Same as previous macro, but useful when we know that the buffer stack is not + * NULL or when we need an lvalue. For internal use only. + */ +#define YY_CURRENT_BUFFER_LVALUE (yy_buffer_stack)[(yy_buffer_stack_top)] + +/* yy_hold_char holds the character lost when yytext is formed. */ +static char yy_hold_char; +static yy_size_t yy_n_chars; /* number of characters read into yy_ch_buf */ +yy_size_t yyleng; + +/* Points to current character in buffer. */ +static char *yy_c_buf_p = (char *) 0; +static int yy_init = 0; /* whether we need to initialize */ +static int yy_start = 0; /* start state number */ + +/* Flag which is used to allow yywrap()'s to do buffer switches + * instead of setting up a fresh yyin. A bit of a hack ... + */ +static int yy_did_buffer_switch_on_eof; + +void yyrestart (FILE *input_file ); +void yy_switch_to_buffer (YY_BUFFER_STATE new_buffer ); +YY_BUFFER_STATE yy_create_buffer (FILE *file,int size ); +void yy_delete_buffer (YY_BUFFER_STATE b ); +void yy_flush_buffer (YY_BUFFER_STATE b ); +void yypush_buffer_state (YY_BUFFER_STATE new_buffer ); +void yypop_buffer_state (void ); + +static void yyensure_buffer_stack (void ); +static void yy_load_buffer_state (void ); +static void yy_init_buffer (YY_BUFFER_STATE b,FILE *file ); + +#define YY_FLUSH_BUFFER yy_flush_buffer(YY_CURRENT_BUFFER ) + +YY_BUFFER_STATE yy_scan_buffer (char *base,yy_size_t size ); +YY_BUFFER_STATE yy_scan_string (yyconst char *yy_str ); +YY_BUFFER_STATE yy_scan_bytes (yyconst char *bytes,yy_size_t len ); + +void *yyalloc (yy_size_t ); +void *yyrealloc (void *,yy_size_t ); +void yyfree (void * ); + +#define yy_new_buffer yy_create_buffer + +#define yy_set_interactive(is_interactive) \ + { \ + if ( ! YY_CURRENT_BUFFER ){ \ + yyensure_buffer_stack (); \ + YY_CURRENT_BUFFER_LVALUE = \ + yy_create_buffer(yyin,YY_BUF_SIZE ); \ + } \ + YY_CURRENT_BUFFER_LVALUE->yy_is_interactive = is_interactive; \ + } + +#define yy_set_bol(at_bol) \ + { \ + if ( ! YY_CURRENT_BUFFER ){\ + yyensure_buffer_stack (); \ + YY_CURRENT_BUFFER_LVALUE = \ + yy_create_buffer(yyin,YY_BUF_SIZE ); \ + } \ + YY_CURRENT_BUFFER_LVALUE->yy_at_bol = at_bol; \ + } + +#define YY_AT_BOL() (YY_CURRENT_BUFFER_LVALUE->yy_at_bol) + +/* Begin user sect3 */ + +typedef unsigned char YY_CHAR; + +FILE *yyin = (FILE *) 0, *yyout = (FILE *) 0; + +typedef int yy_state_type; + +extern int yylineno; + +int yylineno = 1; + +extern char *yytext; +#define yytext_ptr yytext + +static yy_state_type yy_get_previous_state (void ); +static yy_state_type yy_try_NUL_trans (yy_state_type current_state ); +static int yy_get_next_buffer (void ); +static void yy_fatal_error (yyconst char msg[] ); + +/* Done after the current pattern has been matched and before the + * corresponding action - sets up yytext. + */ +#define YY_DO_BEFORE_ACTION \ + (yytext_ptr) = yy_bp; \ + (yytext_ptr) -= (yy_more_len); \ + yyleng = (size_t) (yy_cp - (yytext_ptr)); \ + (yy_hold_char) = *yy_cp; \ + *yy_cp = '\0'; \ + (yy_c_buf_p) = yy_cp; + +#define YY_NUM_RULES 162 +#define YY_END_OF_BUFFER 163 +/* This struct is not used in this scanner, + but its presence is necessary. */ +struct yy_trans_info + { + flex_int32_t yy_verify; + flex_int32_t yy_nxt; + }; +static yyconst flex_int16_t yy_accept[1611] = + { 0, + 1, 1, 144, 144, 148, 148, 152, 152, 156, 156, + 1, 1, 163, 160, 1, 142, 142, 161, 2, 161, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 144, + 145, 145, 146, 161, 148, 149, 149, 150, 161, 155, + 152, 153, 153, 154, 161, 156, 157, 157, 158, 161, + 159, 143, 2, 147, 161, 159, 160, 0, 1, 2, + 2, 2, 2, 160, 160, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, + + 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, + 160, 160, 144, 0, 148, 0, 155, 0, 152, 156, + 0, 159, 0, 2, 2, 159, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, + 160, 160, 160, 159, 160, 160, 160, 160, 160, 160, + + 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, + 160, 160, 159, 160, 160, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, + + 160, 160, 160, 160, 160, 65, 160, 160, 160, 160, + 160, 6, 160, 160, 160, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 159, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, + + 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, + 160, 159, 160, 160, 160, 160, 29, 160, 160, 160, + 160, 160, 160, 160, 160, 129, 160, 12, 13, 160, + 15, 14, 160, 160, 160, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 122, + 160, 160, 160, 160, 160, 3, 160, 160, 160, 160, + + 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 160, 159, 160, 160, 160, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, + 151, 160, 160, 160, 160, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 32, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 33, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, + + 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, + 160, 160, 160, 80, 151, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 79, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 63, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, + + 160, 160, 20, 160, 160, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 30, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, + 31, 160, 160, 160, 160, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, + 160, 160, 160, 22, 160, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, + + 160, 160, 160, 160, 26, 160, 27, 160, 160, 160, + 66, 160, 67, 160, 64, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, + 5, 160, 160, 160, 160, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 82, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 160, 23, 160, 160, 160, + 160, 107, 106, 160, 160, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, + + 160, 160, 34, 160, 160, 160, 160, 160, 160, 160, + 160, 69, 68, 160, 160, 160, 160, 160, 160, 160, + 103, 160, 160, 160, 160, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 50, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, + 160, 160, 54, 160, 160, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 105, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 4, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, + + 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, + 160, 160, 160, 100, 160, 160, 160, 160, 160, 160, + 160, 116, 101, 160, 127, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 21, 160, 160, 160, 160, + 71, 160, 72, 70, 160, 160, 160, 160, 160, 160, + 78, 160, 160, 160, 160, 160, 160, 160, 160, 160, + 102, 160, 160, 160, 160, 126, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 160, 160, 62, 160, 160, + 160, 160, 160, 160, 160, 160, 28, 160, 160, 17, + + 160, 160, 160, 16, 160, 87, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 41, + 42, 160, 160, 160, 160, 160, 160, 130, 160, 160, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, + 160, 73, 160, 160, 160, 160, 160, 77, 160, 160, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, + 160, 160, 81, 160, 160, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 121, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, + 160, 91, 160, 95, 160, 160, 160, 160, 76, 160, + + 160, 114, 160, 160, 160, 128, 160, 160, 160, 160, + 160, 160, 160, 135, 160, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 94, 160, 160, 160, 160, 43, + 44, 160, 49, 96, 160, 108, 104, 160, 160, 37, + 160, 98, 160, 160, 160, 160, 160, 7, 160, 61, + 113, 160, 160, 160, 160, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 160, 83, 134, 160, 160, + 160, 160, 160, 160, 160, 160, 123, 160, 160, 160, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 97, + + 160, 36, 38, 160, 160, 160, 160, 160, 60, 160, + 160, 160, 160, 117, 18, 19, 160, 160, 160, 160, + 160, 160, 160, 58, 160, 160, 160, 160, 160, 160, + 160, 160, 160, 119, 160, 160, 160, 160, 160, 160, + 160, 160, 35, 160, 160, 160, 160, 160, 160, 11, + 160, 160, 160, 160, 160, 160, 160, 10, 160, 160, + 39, 160, 125, 118, 160, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 90, 89, 160, 120, 115, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 160, 45, 160, 124, 160, + + 160, 160, 160, 40, 160, 160, 160, 84, 86, 109, + 160, 160, 160, 88, 160, 160, 160, 160, 160, 160, + 160, 160, 131, 160, 160, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 24, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, + 160, 133, 160, 160, 112, 160, 160, 160, 160, 160, + 160, 160, 25, 160, 9, 160, 160, 110, 51, 160, + 160, 160, 93, 160, 160, 160, 160, 160, 160, 132, + 74, 160, 160, 160, 53, 57, 52, 160, 46, 160, + 8, 160, 160, 92, 160, 160, 160, 160, 160, 160, + + 160, 160, 160, 56, 160, 47, 160, 111, 160, 160, + 85, 160, 160, 160, 160, 160, 160, 75, 55, 48, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 160, 59, 160, 160, 160, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 99, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 138, 160, 160, 160, 160, 160, + 160, 160, 160, 160, 160, 160, 160, 160, 136, 160, + + 139, 140, 160, 160, 160, 160, 160, 137, 141, 0 + } ; + +static yyconst flex_int32_t yy_ec[256] = + { 0, + 1, 1, 1, 1, 1, 1, 1, 1, 2, 3, + 1, 1, 4, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 2, 1, 5, 6, 1, 1, 1, 7, 1, + 1, 1, 1, 1, 8, 1, 1, 1, 1, 1, + 9, 10, 1, 11, 1, 1, 1, 12, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 13, 1, 1, 1, 1, 14, 15, 16, 17, + + 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, + 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, + 38, 39, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1 + } ; + +static yyconst flex_int32_t yy_meta[40] = + { 0, + 1, 2, 3, 4, 5, 1, 6, 1, 1, 1, + 1, 7, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1 + } ; + +static yyconst flex_int16_t yy_base[1625] = + { 0, + 0, 0, 37, 40, 44, 51, 63, 75, 56, 68, + 87, 108, 2844, 2315, 50, 3201, 3201, 3201, 129, 94, + 70, 104, 130, 90, 92, 115, 127, 95, 84, 111, + 137, 148, 50, 150, 155, 157, 163, 171, 178, 2213, + 3201, 3201, 3201, 70, 2102, 3201, 3201, 3201, 42, 1930, + 1613, 3201, 3201, 3201, 195, 1340, 3201, 3201, 3201, 141, + 1156, 3201, 202, 3201, 206, 122, 1017, 212, 120, 0, + 223, 0, 0, 103, 147, 154, 158, 192, 199, 207, + 208, 205, 209, 221, 218, 220, 224, 225, 229, 230, + 231, 238, 251, 236, 247, 250, 237, 248, 256, 259, + + 167, 263, 254, 249, 264, 265, 271, 273, 274, 125, + 275, 277, 284, 278, 281, 285, 288, 286, 289, 292, + 296, 298, 987, 308, 860, 315, 829, 326, 692, 342, + 319, 301, 330, 334, 0, 327, 331, 337, 314, 305, + 333, 335, 343, 340, 346, 349, 370, 350, 339, 352, + 49, 356, 354, 353, 361, 363, 362, 366, 364, 368, + 373, 377, 381, 392, 399, 386, 383, 401, 397, 405, + 408, 406, 182, 407, 409, 410, 385, 411, 414, 412, + 416, 418, 424, 420, 421, 422, 430, 428, 431, 441, + 444, 450, 433, 446, 448, 449, 456, 454, 453, 455, + + 461, 460, 463, 464, 474, 475, 477, 470, 472, 479, + 480, 481, 488, 489, 491, 493, 499, 495, 496, 497, + 500, 501, 504, 505, 507, 511, 517, 512, 508, 521, + 510, 516, 523, 534, 527, 538, 532, 533, 542, 540, + 545, 543, 546, 547, 558, 554, 555, 559, 556, 557, + 563, 571, 575, 565, 568, 569, 577, 579, 581, 599, + 585, 583, 587, 590, 589, 596, 610, 597, 606, 607, + 624, 603, 612, 625, 627, 628, 632, 631, 634, 636, + 635, 637, 638, 640, 641, 644, 645, 656, 659, 648, + 665, 662, 667, 664, 670, 593, 677, 673, 675, 674, + + 676, 646, 682, 678, 688, 3201, 690, 679, 685, 692, + 695, 3201, 696, 697, 698, 703, 702, 709, 705, 706, + 711, 714, 715, 719, 713, 720, 740, 722, 721, 731, + 735, 725, 733, 727, 743, 747, 749, 750, 751, 753, + 754, 755, 757, 758, 763, 774, 760, 768, 771, 778, + 779, 780, 782, 781, 787, 783, 794, 788, 798, 804, + 800, 806, 808, 814, 810, 811, 813, 820, 818, 819, + 812, 826, 823, 825, 830, 834, 827, 841, 837, 840, + 844, 847, 849, 850, 851, 853, 859, 857, 858, 866, + 868, 856, 864, 871, 872, 877, 884, 885, 881, 886, + + 892, 893, 888, 894, 897, 898, 899, 900, 901, 902, + 906, 908, 909, 917, 903, 913, 919, 925, 927, 928, + 910, 930, 931, 934, 933, 937, 941, 935, 945, 947, + 948, 949, 955, 957, 950, 959, 3201, 969, 963, 965, + 966, 970, 972, 951, 991, 3201, 973, 3201, 3201, 975, + 3201, 3201, 974, 979, 982, 994, 1014, 993, 981, 980, + 1001, 1007, 995, 1008, 997, 1019, 1022, 1023, 1011, 1015, + 1027, 1029, 1024, 1036, 1037, 1041, 1043, 1049, 1045, 1046, + 1047, 1050, 1051, 1056, 1053, 1063, 1057, 1064, 1066, 3201, + 1067, 1068, 1071, 1073, 1075, 3201, 1074, 1076, 1077, 1079, + + 1080, 1083, 1084, 1087, 1089, 1090, 1092, 1094, 1100, 1096, + 1097, 1110, 1117, 1114, 1104, 1113, 1115, 1119, 1121, 1129, + 1127, 1126, 1128, 1136, 1132, 1134, 1138, 1135, 1139, 1142, + 1145, 1146, 1170, 1147, 1148, 1149, 1153, 1154, 1157, 1158, + 1162, 1165, 1177, 1178, 1176, 1164, 1184, 1187, 1194, 1195, + 1197, 1191, 1155, 1199, 1204, 1206, 1208, 1188, 1211, 1212, + 3201, 1218, 1217, 1215, 1219, 1223, 1224, 1226, 1225, 1231, + 1227, 1237, 1229, 1245, 3201, 1230, 1239, 1233, 1241, 1250, + 1253, 1252, 1259, 1267, 3201, 1269, 1270, 1263, 1265, 1256, + 1272, 1273, 1277, 1278, 1279, 1281, 1284, 1287, 1289, 1288, + + 1292, 1291, 1293, 1296, 1300, 1299, 1302, 1301, 1305, 1303, + 1242, 1315, 1322, 1311, 1321, 1318, 1324, 1323, 1329, 1327, + 1330, 1328, 1331, 3201, 239, 1332, 1333, 1334, 1341, 1349, + 1350, 1343, 1351, 1353, 1352, 1359, 1342, 1363, 1360, 1364, + 1366, 1368, 1371, 1372, 1373, 1377, 1375, 1381, 1383, 1382, + 1384, 1385, 1391, 1394, 1392, 1396, 1397, 1398, 1399, 1400, + 1402, 1406, 1405, 1410, 3201, 1427, 1412, 1415, 1413, 1424, + 1435, 1428, 1431, 1432, 1442, 1438, 1440, 1443, 1449, 1446, + 1451, 1452, 1436, 1458, 1462, 1459, 1461, 1460, 1468, 3201, + 1463, 1470, 1471, 1472, 1473, 1475, 1477, 1480, 1481, 1488, + + 1482, 1494, 3201, 1496, 1490, 1484, 1501, 1502, 1505, 1507, + 1509, 1510, 1511, 1513, 1514, 1517, 1515, 1520, 1524, 3201, + 1528, 1532, 1529, 1540, 1536, 1525, 1537, 1539, 1541, 1542, + 1551, 1543, 1547, 1550, 1552, 1549, 1554, 1555, 1557, 1559, + 3201, 1571, 1572, 1574, 1414, 1562, 1583, 1556, 1575, 1558, + 1584, 1585, 1587, 1588, 1589, 1590, 1593, 1595, 1591, 1597, + 1596, 1599, 1600, 1608, 1598, 1617, 1618, 1619, 1601, 1623, + 1629, 1632, 1620, 3201, 1631, 1634, 1635, 1636, 1642, 1644, + 1638, 1640, 1645, 1646, 1647, 1656, 1648, 1650, 1654, 1658, + 1652, 1660, 1661, 1662, 1670, 1664, 1672, 1674, 1678, 1680, + + 1682, 1684, 1686, 1694, 3201, 1690, 3201, 1691, 1692, 1700, + 3201, 1702, 3201, 1704, 3201, 1707, 1711, 1699, 1697, 1705, + 1713, 1709, 1716, 1717, 1720, 1723, 1725, 1726, 1727, 1728, + 3201, 1729, 1734, 1731, 1735, 1738, 1739, 1740, 1744, 1756, + 1741, 1743, 1753, 1754, 3201, 1750, 1762, 1764, 1765, 1766, + 1773, 1770, 1771, 1777, 1767, 1778, 1788, 1786, 1779, 1789, + 1790, 1791, 1793, 1794, 1801, 1798, 1795, 1802, 1804, 1805, + 1806, 1807, 1814, 1811, 1812, 1815, 3201, 1823, 1821, 1817, + 1825, 3201, 3201, 1834, 1827, 1835, 1837, 1839, 1842, 1843, + 1845, 1849, 1847, 1850, 1851, 1856, 1857, 1858, 1859, 1862, + + 1860, 1866, 3201, 1872, 1868, 1878, 1869, 1865, 1887, 1879, + 1888, 3201, 3201, 1881, 1880, 1890, 1894, 1900, 1896, 1898, + 3201, 1899, 1901, 1902, 1904, 1906, 1914, 1903, 1910, 1918, + 1915, 1920, 1921, 1927, 1924, 1928, 1931, 1935, 1939, 3201, + 1940, 1942, 1943, 1945, 1944, 1947, 1948, 1951, 1952, 1957, + 1954, 1965, 1967, 1958, 1966, 1960, 1971, 1968, 1973, 1976, + 1983, 1981, 3201, 1987, 1986, 1994, 1990, 1992, 1995, 1998, + 1997, 1999, 2000, 2001, 2002, 2006, 2003, 2007, 2010, 3201, + 2013, 2018, 2012, 2024, 2025, 2014, 2032, 2026, 2028, 3201, + 2036, 2042, 2035, 2038, 2047, 2043, 2049, 2039, 2050, 2051, + + 2053, 2054, 2057, 2062, 2056, 2064, 2069, 2071, 2078, 2075, + 2081, 2082, 2079, 2083, 2089, 2086, 2087, 2088, 2092, 2099, + 2093, 2101, 2097, 3201, 2103, 2108, 2111, 2112, 2114, 2116, + 2104, 3201, 3201, 2120, 3201, 2121, 2124, 2125, 2126, 2128, + 2129, 2127, 2134, 2141, 2130, 3201, 2137, 2140, 2142, 2143, + 3201, 2154, 3201, 3201, 2147, 2155, 2156, 2159, 2162, 2166, + 3201, 2163, 2157, 2167, 2169, 2171, 2172, 2174, 2176, 2175, + 3201, 2180, 2179, 2178, 2188, 3201, 2187, 2193, 2182, 2189, + 2198, 2199, 2202, 2203, 2205, 2211, 2209, 3201, 2210, 2212, + 2216, 2218, 2219, 2220, 2223, 2224, 3201, 2233, 2234, 3201, + + 2227, 2217, 2235, 3201, 2241, 3201, 2242, 2243, 2244, 2245, + 2250, 2246, 2253, 2256, 2257, 2259, 2260, 2263, 2266, 3201, + 3201, 2267, 2271, 2277, 2268, 2279, 2282, 3201, 2265, 2283, + 2272, 2285, 2286, 2287, 2292, 2294, 2297, 2289, 2298, 2296, + 2299, 3201, 2302, 2306, 2307, 2309, 2310, 3201, 2312, 2313, + 2314, 2317, 2319, 2324, 2333, 2329, 2335, 2337, 2338, 2340, + 2344, 2341, 3201, 2345, 2347, 2348, 2352, 2353, 2349, 2356, + 2361, 2364, 2354, 2366, 3201, 2369, 2358, 2374, 2370, 2376, + 2378, 2372, 2380, 2381, 2382, 2385, 2386, 2389, 2390, 2396, + 2399, 3201, 2392, 3201, 2401, 2405, 2413, 2414, 3201, 2394, + + 2407, 3201, 2417, 2411, 2422, 3201, 2425, 2418, 2426, 2428, + 2429, 2430, 2433, 3201, 2431, 2436, 2438, 2441, 2442, 2444, + 2445, 2447, 2455, 2451, 3201, 2453, 2454, 2456, 2458, 3201, + 3201, 2466, 3201, 3201, 2471, 3201, 3201, 2463, 2473, 3201, + 2475, 3201, 2481, 2477, 2479, 2461, 2480, 3201, 2487, 3201, + 3201, 2484, 2488, 2482, 2492, 2494, 2499, 2501, 2491, 2502, + 2504, 2505, 2506, 2507, 2508, 2510, 2513, 2511, 2514, 2519, + 2515, 2521, 2523, 2524, 2525, 2527, 3201, 3201, 2531, 2536, + 2533, 2538, 2540, 2542, 2543, 2544, 3201, 2547, 2548, 2550, + 2552, 2553, 2556, 2559, 2564, 2573, 2560, 2566, 2567, 3201, + + 2569, 3201, 3201, 2574, 2576, 2581, 2577, 2582, 3201, 2584, + 2586, 2590, 2596, 3201, 3201, 3201, 2597, 2591, 2593, 2599, + 2601, 2603, 2607, 3201, 2608, 2609, 2611, 2610, 2618, 2620, + 2626, 2628, 2630, 3201, 2636, 2633, 2634, 2632, 2635, 2638, + 2640, 2612, 3201, 2644, 2642, 2643, 2648, 2653, 2649, 3201, + 2651, 2656, 2660, 2662, 2664, 2661, 2667, 3201, 2665, 2666, + 3201, 2677, 3201, 3201, 2668, 2680, 2682, 2684, 2687, 2690, + 2673, 2678, 2698, 2695, 2696, 3201, 3201, 2697, 3201, 3201, + 2699, 2701, 2702, 2704, 2705, 2708, 2709, 2710, 2711, 2712, + 2715, 2721, 2714, 2722, 2723, 2725, 3201, 2733, 3201, 2729, + + 2738, 2735, 2740, 3201, 2741, 2742, 2727, 3201, 3201, 3201, + 2746, 2743, 2753, 3201, 2755, 2756, 2757, 2758, 2759, 2766, + 2764, 2768, 3201, 2769, 2770, 2772, 2773, 2774, 2775, 2776, + 2781, 2779, 2780, 2792, 2793, 3201, 2796, 2783, 2787, 2801, + 2807, 2797, 2802, 2804, 2811, 2808, 2812, 2813, 2823, 2819, + 2822, 3201, 2826, 2815, 3201, 2827, 2828, 2830, 2839, 2843, + 2835, 2845, 3201, 2846, 3201, 2849, 2850, 3201, 3201, 2851, + 2853, 2856, 3201, 2857, 2854, 2858, 2860, 2863, 2864, 3201, + 3201, 2865, 2867, 2871, 3201, 3201, 3201, 2880, 3201, 2882, + 3201, 2888, 2868, 3201, 2873, 2890, 2870, 2881, 2876, 2893, + + 2894, 2892, 2901, 3201, 2903, 3201, 2905, 3201, 2906, 2907, + 3201, 2914, 2910, 2912, 2913, 2915, 2919, 3201, 3201, 3201, + 2916, 2921, 2923, 2925, 2922, 2926, 2927, 2928, 2930, 2937, + 2934, 2945, 2931, 2938, 2954, 2947, 3201, 2948, 2951, 2960, + 2962, 2958, 2964, 2959, 2965, 2966, 2967, 2968, 2969, 2971, + 2982, 2973, 2974, 2984, 2986, 2990, 2983, 2998, 2997, 2994, + 2999, 3000, 3008, 3004, 3007, 3201, 3005, 3006, 3009, 3011, + 3012, 3016, 3014, 3026, 3029, 3017, 3031, 3015, 3036, 3032, + 3037, 3040, 3041, 3042, 3201, 3043, 3045, 3047, 3049, 3051, + 3053, 3054, 3055, 3058, 3060, 3063, 3065, 3069, 3201, 3070, + + 3201, 3201, 3074, 3071, 3077, 3081, 3083, 3201, 3201, 3201, + 3109, 3116, 3123, 3130, 3137, 94, 3144, 3151, 3158, 3165, + 3172, 3179, 3186, 3193 + } ; + +static yyconst flex_int16_t yy_def[1625] = + { 0, + 1610, 1, 1611, 1611, 1612, 1612, 1613, 1613, 1614, 1614, + 1615, 1615, 1610, 1616, 1610, 1610, 1610, 1610, 1617, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1618, + 1610, 1610, 1610, 1618, 1619, 1610, 1610, 1610, 1619, 1620, + 1610, 1610, 1610, 1610, 1620, 1621, 1610, 1610, 1610, 1621, + 1622, 1610, 1623, 1610, 1622, 1622, 1616, 1616, 1610, 1624, + 1617, 1624, 1617, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1618, 1618, 1619, 1619, 1620, 1620, 1610, 1621, + 1621, 1622, 1622, 1623, 1623, 1622, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1622, 1616, 1616, 1616, 1616, 1616, 1616, + + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1622, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + + 1616, 1616, 1616, 1616, 1616, 1610, 1616, 1616, 1616, 1616, + 1616, 1610, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1622, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1622, 1616, 1616, 1616, 1616, 1610, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1610, 1616, 1610, 1610, 1616, + 1610, 1610, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1610, + 1616, 1616, 1616, 1616, 1616, 1610, 1616, 1616, 1616, 1616, + + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1622, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1610, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1610, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1610, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1610, 1622, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1610, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1610, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + + 1616, 1616, 1610, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1610, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1610, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1610, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + + 1616, 1616, 1616, 1616, 1610, 1616, 1610, 1616, 1616, 1616, + 1610, 1616, 1610, 1616, 1610, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1610, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1610, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1610, 1616, 1616, 1616, + 1616, 1610, 1610, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + + 1616, 1616, 1610, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1610, 1610, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1610, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1610, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1610, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1610, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1610, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1610, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1610, 1610, 1616, 1610, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1610, 1616, 1616, 1616, 1616, + 1610, 1616, 1610, 1610, 1616, 1616, 1616, 1616, 1616, 1616, + 1610, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1610, 1616, 1616, 1616, 1616, 1610, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1610, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1610, 1616, 1616, 1610, + + 1616, 1616, 1616, 1610, 1616, 1610, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1610, + 1610, 1616, 1616, 1616, 1616, 1616, 1616, 1610, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1610, 1616, 1616, 1616, 1616, 1616, 1610, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1610, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1610, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1610, 1616, 1610, 1616, 1616, 1616, 1616, 1610, 1616, + + 1616, 1610, 1616, 1616, 1616, 1610, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1610, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1610, 1616, 1616, 1616, 1616, 1610, + 1610, 1616, 1610, 1610, 1616, 1610, 1610, 1616, 1616, 1610, + 1616, 1610, 1616, 1616, 1616, 1616, 1616, 1610, 1616, 1610, + 1610, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1610, 1610, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1610, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1610, + + 1616, 1610, 1610, 1616, 1616, 1616, 1616, 1616, 1610, 1616, + 1616, 1616, 1616, 1610, 1610, 1610, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1610, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1610, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1610, 1616, 1616, 1616, 1616, 1616, 1616, 1610, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1610, 1616, 1616, + 1610, 1616, 1610, 1610, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1610, 1610, 1616, 1610, 1610, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1610, 1616, 1610, 1616, + + 1616, 1616, 1616, 1610, 1616, 1616, 1616, 1610, 1610, 1610, + 1616, 1616, 1616, 1610, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1610, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1610, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1610, 1616, 1616, 1610, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1610, 1616, 1610, 1616, 1616, 1610, 1610, 1616, + 1616, 1616, 1610, 1616, 1616, 1616, 1616, 1616, 1616, 1610, + 1610, 1616, 1616, 1616, 1610, 1610, 1610, 1616, 1610, 1616, + 1610, 1616, 1616, 1610, 1616, 1616, 1616, 1616, 1616, 1616, + + 1616, 1616, 1616, 1610, 1616, 1610, 1616, 1610, 1616, 1616, + 1610, 1616, 1616, 1616, 1616, 1616, 1616, 1610, 1610, 1610, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1610, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1610, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1610, 1616, 1616, 1616, 1616, 1616, + 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1616, 1610, 1616, + + 1610, 1610, 1616, 1616, 1616, 1616, 1616, 1610, 1610, 0, + 1610, 1610, 1610, 1610, 1610, 1610, 1610, 1610, 1610, 1610, + 1610, 1610, 1610, 1610 + } ; + +static yyconst flex_int16_t yy_nxt[3241] = + { 0, + 14, 15, 16, 17, 18, 19, 18, 14, 14, 14, + 14, 18, 20, 21, 14, 22, 23, 24, 25, 14, + 26, 27, 28, 29, 30, 31, 32, 33, 34, 14, + 35, 36, 37, 38, 39, 14, 14, 14, 14, 41, + 42, 43, 41, 42, 43, 125, 46, 47, 125, 44, + 48, 69, 44, 46, 47, 70, 49, 48, 57, 58, + 59, 68, 68, 49, 51, 52, 53, 54, 60, 18, + 57, 58, 59, 123, 123, 55, 51, 52, 53, 54, + 60, 18, 68, 104, 215, 74, 75, 55, 15, 16, + 17, 62, 63, 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50, 50, 50, + 56, 56, 56, 56, 56, 56, 56, 61, 61, 61, + 61, 61, 61, 61, 71, 71, 1610, 71, 71, 71, + 71, 123, 123, 1610, 1610, 1610, 123, 123, 125, 125, + 1610, 1610, 125, 1610, 125, 127, 1610, 1610, 1610, 1610, + 1610, 127, 130, 130, 1610, 1610, 1610, 130, 130, 132, + 1610, 1610, 1610, 1610, 1610, 132, 134, 134, 1610, 134, + 134, 134, 134, 72, 72, 1610, 72, 72, 72, 72, + + 13, 1610, 1610, 1610, 1610, 1610, 1610, 1610, 1610, 1610, + 1610, 1610, 1610, 1610, 1610, 1610, 1610, 1610, 1610, 1610, + 1610, 1610, 1610, 1610, 1610, 1610, 1610, 1610, 1610, 1610, + 1610, 1610, 1610, 1610, 1610, 1610, 1610, 1610, 1610, 1610 + } ; + +static yyconst flex_int16_t yy_chk[3241] = + { 0, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, + 3, 3, 4, 4, 4, 49, 5, 5, 49, 3, + 5, 15, 4, 6, 6, 15, 5, 6, 9, 9, + 9, 151, 33, 6, 7, 7, 7, 7, 9, 7, + 10, 10, 10, 44, 44, 7, 8, 8, 8, 8, + 10, 8, 21, 33, 151, 21, 21, 8, 11, 11, + 11, 11, 11, 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1261, 1262, + 1263, 1270, 1260, 1272, 1267, 1273, 1274, 1275, 1276, 1276, + 1265, 1274, 1275, 1279, 1270, 1281, 1269, 1272, 1280, 1268, + 1282, 1271, 1283, 1273, 1284, 1285, 1286, 1286, 1288, 1288, + 1289, 1283, 1290, 1279, 1291, 1292, 1280, 1281, 1293, 1289, + 1282, 1294, 1297, 1285, 1284, 1295, 1295, 1290, 1298, 1299, + 1296, 1301, 1291, 1292, 1293, 1296, 1304, 1297, 1305, 1307, + 1294, 1305, 1306, 1306, 1308, 1310, 1310, 1298, 1311, 1299, + + 1301, 1312, 1312, 1318, 1307, 1319, 1304, 1313, 1313, 1317, + 1317, 1320, 1308, 1321, 1319, 1322, 1320, 1311, 1321, 1323, + 1325, 1326, 1328, 1327, 1342, 1318, 1326, 1323, 1327, 1329, + 1329, 1330, 1330, 1331, 1322, 1325, 1342, 1328, 1331, 1332, + 1332, 1333, 1333, 1335, 1338, 1336, 1337, 1339, 1335, 1336, + 1340, 1337, 1341, 1338, 1345, 1346, 1344, 1341, 1340, 1344, + 1347, 1349, 1339, 1351, 1346, 1348, 1348, 1345, 1352, 1347, + 1349, 1353, 1353, 1356, 1354, 1355, 1355, 1359, 1360, 1357, + 1365, 1356, 1351, 1354, 1357, 1371, 1359, 1352, 1362, 1362, + 1372, 1360, 1366, 1366, 1367, 1368, 1368, 1367, 1369, 1369, + + 1365, 1370, 1370, 1371, 1372, 1373, 1374, 1374, 1375, 1378, + 1373, 1381, 1375, 1382, 1383, 1378, 1384, 1385, 1382, 1386, + 1386, 1387, 1388, 1389, 1390, 1390, 1393, 1391, 1381, 1381, + 1388, 1385, 1383, 1392, 1394, 1395, 1384, 1396, 1392, 1407, + 1387, 1400, 1389, 1391, 1395, 1398, 1393, 1402, 1398, 1401, + 1401, 1402, 1403, 1405, 1406, 1412, 1412, 1396, 1411, 1400, + 1394, 1403, 1405, 1411, 1407, 1413, 1406, 1415, 1416, 1417, + 1418, 1419, 1415, 1420, 1413, 1418, 1421, 1416, 1420, 1422, + 1422, 1424, 1425, 1426, 1426, 1427, 1428, 1429, 1430, 1419, + 1417, 1432, 1433, 1431, 1427, 1438, 1430, 1425, 1431, 1439, + + 1424, 1421, 1428, 1434, 1434, 1435, 1429, 1437, 1437, 1442, + 1435, 1433, 1440, 1440, 1443, 1438, 1444, 1432, 1441, 1441, + 1446, 1439, 1445, 1445, 1447, 1448, 1443, 1454, 1442, 1447, + 1449, 1450, 1446, 1451, 1451, 1449, 1444, 1453, 1453, 1456, + 1457, 1458, 1458, 13, 1448, 1457, 1454, 1461, 1450, 1450, + 1459, 1459, 1461, 1456, 1460, 1460, 1462, 1462, 1464, 1464, + 1466, 1466, 1467, 1470, 1471, 1471, 1475, 1467, 1472, 1474, + 1476, 1470, 1477, 1472, 1474, 1478, 1479, 1482, 1483, 1483, + 1493, 1479, 1497, 1484, 1475, 1495, 1476, 1484, 1499, 1477, + 1477, 1488, 1488, 1498, 1490, 1493, 1478, 1482, 1490, 1492, + + 1492, 1496, 1496, 1495, 1502, 1500, 1501, 1497, 1498, 1499, + 1500, 1501, 1503, 1503, 1505, 1505, 1507, 1507, 1509, 1510, + 1510, 1512, 1513, 1502, 1514, 1515, 1512, 1516, 1521, 1514, + 1509, 1517, 1521, 1522, 1525, 1523, 1513, 1524, 1526, 1527, + 1528, 1529, 1529, 1533, 1515, 1516, 1531, 1517, 1523, 1530, + 1534, 1531, 1525, 1522, 1526, 1528, 1524, 1532, 1530, 1536, + 1538, 1535, 1532, 1539, 1527, 1534, 1535, 1540, 1533, 1541, + 1542, 1544, 1540, 1536, 1541, 1538, 1543, 1545, 1546, 1547, + 1548, 1549, 1539, 1550, 1542, 1552, 1553, 1553, 1550, 1543, + 1544, 1545, 1547, 1548, 1551, 1557, 1554, 1546, 1555, 1551, + + 1549, 1554, 1556, 1555, 1552, 1558, 1560, 1556, 1559, 1559, + 1558, 1561, 1562, 1560, 1557, 1563, 1564, 1567, 1568, 1565, + 1563, 1569, 1567, 1570, 1571, 1571, 1573, 1578, 1572, 1576, + 1561, 1562, 1565, 1572, 1576, 1564, 1570, 1568, 1574, 1574, + 1569, 1575, 1575, 1577, 1580, 1573, 1578, 1579, 1579, 1581, + 1577, 1580, 1582, 1583, 1584, 1586, 1581, 1587, 1583, 1588, + 1586, 1589, 1587, 1590, 1590, 1591, 1592, 1593, 1593, 1594, + 1594, 1582, 1595, 1584, 1596, 1596, 1597, 1597, 1588, 1595, + 1589, 1598, 1600, 1604, 1591, 1592, 1603, 1600, 1598, 1605, + 0, 1603, 1606, 1606, 1607, 1607, 0, 0, 0, 0, + + 0, 0, 1604, 0, 0, 0, 0, 0, 1605, 1611, + 1611, 1611, 1611, 1611, 1611, 1611, 1612, 1612, 1612, 1612, + 1612, 1612, 1612, 1613, 1613, 1613, 1613, 1613, 1613, 1613, + 1614, 1614, 1614, 1614, 1614, 1614, 1614, 1615, 1615, 1615, + 1615, 1615, 1615, 1615, 1617, 1617, 0, 1617, 1617, 1617, + 1617, 1618, 1618, 0, 0, 0, 1618, 1618, 1619, 1619, + 0, 0, 1619, 0, 1619, 1620, 0, 0, 0, 0, + 0, 1620, 1621, 1621, 0, 0, 0, 1621, 1621, 1622, + 0, 0, 0, 0, 0, 1622, 1623, 1623, 0, 1623, + 1623, 1623, 1623, 1624, 1624, 0, 1624, 1624, 1624, 1624, + + 1610, 1610, 1610, 1610, 1610, 1610, 1610, 1610, 1610, 1610, + 1610, 1610, 1610, 1610, 1610, 1610, 1610, 1610, 1610, 1610, + 1610, 1610, 1610, 1610, 1610, 1610, 1610, 1610, 1610, 1610, + 1610, 1610, 1610, 1610, 1610, 1610, 1610, 1610, 1610, 1610 + } ; + +static yy_state_type yy_last_accepting_state; +static char *yy_last_accepting_cpos; + +extern int yy_flex_debug; +int yy_flex_debug = 0; + +/* The intent behind this definition is that it'll catch + * any uses of REJECT which flex missed. + */ +#define REJECT reject_used_but_not_detected +static int yy_more_flag = 0; +static int yy_more_len = 0; +#define yymore() ((yy_more_flag) = 1) +#define YY_MORE_ADJ (yy_more_len) +#define YY_RESTORE_YY_MORE_OFFSET +char *yytext; +#line 1 "./util/configlexer.lex" +#line 2 "./util/configlexer.lex" +/* + * configlexer.lex - lexical analyzer for unbound config file + * + * Copyright (c) 2001-2006, NLnet Labs. All rights reserved + * + * See LICENSE for the license. + * + */ +#include <ctype.h> +#include <string.h> +#include <strings.h> +#ifdef HAVE_GLOB_H +# include <glob.h> +#endif + +#include "util/config_file.h" +#include "util/configparser.h" +void ub_c_error(const char *message); + +#if 0 +#define LEXOUT(s) printf s /* used ONLY when debugging */ +#else +#define LEXOUT(s) +#endif + +/** avoid warning in about fwrite return value */ +#define ECHO ub_c_error_msg("syntax error at text: %s", yytext) + +/** A parser variable, this is a statement in the config file which is + * of the form variable: value1 value2 ... nargs is the number of values. */ +#define YDVAR(nargs, var) \ + num_args=(nargs); \ + LEXOUT(("v(%s%d) ", yytext, num_args)); \ + if(num_args > 0) { BEGIN(val); } \ + return (var); + +struct inc_state { + char* filename; + int line; + YY_BUFFER_STATE buffer; + struct inc_state* next; +}; +static struct inc_state* config_include_stack = NULL; +static int inc_depth = 0; +static int inc_prev = 0; +static int num_args = 0; + +void init_cfg_parse(void) +{ + config_include_stack = NULL; + inc_depth = 0; + inc_prev = 0; + num_args = 0; +} + +static void config_start_include(const char* filename) +{ + FILE *input; + struct inc_state* s; + char* nm; + if(inc_depth++ > 100000) { + ub_c_error_msg("too many include files"); + return; + } + if(strlen(filename) == 0) { + ub_c_error_msg("empty include file name"); + return; + } + s = (struct inc_state*)malloc(sizeof(*s)); + if(!s) { + ub_c_error_msg("include %s: malloc failure", filename); + return; + } + if(cfg_parser->chroot && strncmp(filename, cfg_parser->chroot, + strlen(cfg_parser->chroot)) == 0) { + filename += strlen(cfg_parser->chroot); + } + nm = strdup(filename); + if(!nm) { + ub_c_error_msg("include %s: strdup failure", filename); + free(s); + return; + } + input = fopen(filename, "r"); + if(!input) { + ub_c_error_msg("cannot open include file '%s': %s", + filename, strerror(errno)); + free(s); + free(nm); + return; + } + LEXOUT(("switch_to_include_file(%s)\n", filename)); + s->filename = cfg_parser->filename; + s->line = cfg_parser->line; + s->buffer = YY_CURRENT_BUFFER; + s->next = config_include_stack; + config_include_stack = s; + cfg_parser->filename = nm; + cfg_parser->line = 1; + yy_switch_to_buffer(yy_create_buffer(input,YY_BUF_SIZE)); +} + +static void config_start_include_glob(const char* filename) +{ + + /* check for wildcards */ +#ifdef HAVE_GLOB + glob_t g; + size_t i; + int r, flags; + if(!(!strchr(filename, '*') && !strchr(filename, '?') && !strchr(filename, '[') && + !strchr(filename, '{') && !strchr(filename, '~'))) { + flags = 0 +#ifdef GLOB_ERR + | GLOB_ERR +#endif +#ifdef GLOB_NOSORT + | GLOB_NOSORT +#endif +#ifdef GLOB_BRACE + | GLOB_BRACE +#endif +#ifdef GLOB_TILDE + | GLOB_TILDE +#endif + ; + memset(&g, 0, sizeof(g)); + r = glob(filename, flags, NULL, &g); + if(r) { + /* some error */ + globfree(&g); + if(r == GLOB_NOMATCH) + return; /* no matches for pattern */ + config_start_include(filename); /* let original deal with it */ + return; + } + /* process files found, if any */ + for(i=0; i<(size_t)g.gl_pathc; i++) { + config_start_include(g.gl_pathv[i]); + } + globfree(&g); + return; + } +#endif /* HAVE_GLOB */ + + config_start_include(filename); +} + +static void config_end_include(void) +{ + struct inc_state* s = config_include_stack; + --inc_depth; + if(!s) return; + free(cfg_parser->filename); + cfg_parser->filename = s->filename; + cfg_parser->line = s->line; + yy_delete_buffer(YY_CURRENT_BUFFER); + yy_switch_to_buffer(s->buffer); + config_include_stack = s->next; + free(s); +} + +#ifndef yy_set_bol /* compat definition, for flex 2.4.6 */ +#define yy_set_bol(at_bol) \ + { \ + if ( ! yy_current_buffer ) \ + yy_current_buffer = yy_create_buffer(yyin,YY_BUF_SIZE ); \ + yy_current_buffer->yy_ch_buf[0] = ((at_bol)?'\n':' '); \ + } +#endif + +#define YY_NO_INPUT 1 +#line 177 "./util/configlexer.lex" +#ifndef YY_NO_UNPUT +#define YY_NO_UNPUT 1 +#endif +#ifndef YY_NO_INPUT +#define YY_NO_INPUT 1 +#endif + +#line 1879 "<stdout>" + +#define INITIAL 0 +#define quotedstring 1 +#define singlequotedstr 2 +#define include 3 +#define include_quoted 4 +#define val 5 + +#ifndef YY_NO_UNISTD_H +/* Special case for "unistd.h", since it is non-ANSI. We include it way + * down here because we want the user's section 1 to have been scanned first. + * The user has a chance to override it with an option. + */ +#include <unistd.h> +#endif + +#ifndef YY_EXTRA_TYPE +#define YY_EXTRA_TYPE void * +#endif + +static int yy_init_globals (void ); + +/* Accessor methods to globals. + These are made visible to non-reentrant scanners for convenience. */ + +int yylex_destroy (void ); + +int yyget_debug (void ); + +void yyset_debug (int debug_flag ); + +YY_EXTRA_TYPE yyget_extra (void ); + +void yyset_extra (YY_EXTRA_TYPE user_defined ); + +FILE *yyget_in (void ); + +void yyset_in (FILE * in_str ); + +FILE *yyget_out (void ); + +void yyset_out (FILE * out_str ); + +yy_size_t yyget_leng (void ); + +char *yyget_text (void ); + +int yyget_lineno (void ); + +void yyset_lineno (int line_number ); + +/* Macros after this point can all be overridden by user definitions in + * section 1. + */ + +#ifndef YY_SKIP_YYWRAP +#ifdef __cplusplus +extern "C" int yywrap (void ); +#else +extern int yywrap (void ); +#endif +#endif + +#ifndef yytext_ptr +static void yy_flex_strncpy (char *,yyconst char *,int ); +#endif + +#ifdef YY_NEED_STRLEN +static int yy_flex_strlen (yyconst char * ); +#endif + +#ifndef YY_NO_INPUT + +#ifdef __cplusplus +static int yyinput (void ); +#else +static int input (void ); +#endif + +#endif + +/* Amount of stuff to slurp up with each read. */ +#ifndef YY_READ_BUF_SIZE +#define YY_READ_BUF_SIZE 8192 +#endif + +/* Copy whatever the last rule matched to the standard output. */ +#ifndef ECHO +/* This used to be an fputs(), but since the string might contain NUL's, + * we now use fwrite(). + */ +#define ECHO do { if (fwrite( yytext, yyleng, 1, yyout )) {} } while (0) +#endif + +/* Gets input and stuffs it into "buf". number of characters read, or YY_NULL, + * is returned in "result". + */ +#ifndef YY_INPUT +#define YY_INPUT(buf,result,max_size) \ + if ( YY_CURRENT_BUFFER_LVALUE->yy_is_interactive ) \ + { \ + int c = '*'; \ + size_t n; \ + for ( n = 0; n < max_size && \ + (c = getc( yyin )) != EOF && c != '\n'; ++n ) \ + buf[n] = (char) c; \ + if ( c == '\n' ) \ + buf[n++] = (char) c; \ + if ( c == EOF && ferror( yyin ) ) \ + YY_FATAL_ERROR( "input in flex scanner failed" ); \ + result = n; \ + } \ + else \ + { \ + errno=0; \ + while ( (result = fread(buf, 1, max_size, yyin))==0 && ferror(yyin)) \ + { \ + if( errno != EINTR) \ + { \ + YY_FATAL_ERROR( "input in flex scanner failed" ); \ + break; \ + } \ + errno=0; \ + clearerr(yyin); \ + } \ + }\ +\ + +#endif + +/* No semi-colon after return; correct usage is to write "yyterminate();" - + * we don't want an extra ';' after the "return" because that will cause + * some compilers to complain about unreachable statements. + */ +#ifndef yyterminate +#define yyterminate() return YY_NULL +#endif + +/* Number of entries by which start-condition stack grows. */ +#ifndef YY_START_STACK_INCR +#define YY_START_STACK_INCR 25 +#endif + +/* Report a fatal error. */ +#ifndef YY_FATAL_ERROR +#define YY_FATAL_ERROR(msg) yy_fatal_error( msg ) +#endif + +/* end tables serialization structures and prototypes */ + +/* Default declaration of generated scanner - a define so the user can + * easily add parameters. + */ +#ifndef YY_DECL +#define YY_DECL_IS_OURS 1 + +extern int yylex (void); + +#define YY_DECL int yylex (void) +#endif /* !YY_DECL */ + +/* Code executed at the beginning of each rule, after yytext and yyleng + * have been set up. + */ +#ifndef YY_USER_ACTION +#define YY_USER_ACTION +#endif + +/* Code executed at the end of each rule. */ +#ifndef YY_BREAK +#define YY_BREAK break; +#endif + +#define YY_RULE_SETUP \ + YY_USER_ACTION + +/** The main scanner function which does all the work. + */ +YY_DECL +{ + register yy_state_type yy_current_state; + register char *yy_cp, *yy_bp; + register int yy_act; + +#line 197 "./util/configlexer.lex" + +#line 2066 "<stdout>" + + if ( !(yy_init) ) + { + (yy_init) = 1; + +#ifdef YY_USER_INIT + YY_USER_INIT; +#endif + + if ( ! (yy_start) ) + (yy_start) = 1; /* first start state */ + + if ( ! yyin ) + yyin = stdin; + + if ( ! yyout ) + yyout = stdout; + + if ( ! YY_CURRENT_BUFFER ) { + yyensure_buffer_stack (); + YY_CURRENT_BUFFER_LVALUE = + yy_create_buffer(yyin,YY_BUF_SIZE ); + } + + yy_load_buffer_state( ); + } + + while ( 1 ) /* loops until end-of-file is reached */ + { + (yy_more_len) = 0; + if ( (yy_more_flag) ) + { + (yy_more_len) = (yy_c_buf_p) - (yytext_ptr); + (yy_more_flag) = 0; + } + yy_cp = (yy_c_buf_p); + + /* Support of yytext. */ + *yy_cp = (yy_hold_char); + + /* yy_bp points to the position in yy_ch_buf of the start of + * the current run. + */ + yy_bp = yy_cp; + + yy_current_state = (yy_start); +yy_match: + do + { + register YY_CHAR yy_c = yy_ec[YY_SC_TO_UI(*yy_cp)]; + if ( yy_accept[yy_current_state] ) + { + (yy_last_accepting_state) = yy_current_state; + (yy_last_accepting_cpos) = yy_cp; + } + while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state ) + { + yy_current_state = (int) yy_def[yy_current_state]; + if ( yy_current_state >= 1611 ) + yy_c = yy_meta[(unsigned int) yy_c]; + } + yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c]; + ++yy_cp; + } + while ( yy_base[yy_current_state] != 3201 ); + +yy_find_action: + yy_act = yy_accept[yy_current_state]; + if ( yy_act == 0 ) + { /* have to back up */ + yy_cp = (yy_last_accepting_cpos); + yy_current_state = (yy_last_accepting_state); + yy_act = yy_accept[yy_current_state]; + } + + YY_DO_BEFORE_ACTION; + +do_action: /* This label is used only to access EOF actions. */ + + switch ( yy_act ) + { /* beginning of action switch */ + case 0: /* must back up */ + /* undo the effects of YY_DO_BEFORE_ACTION */ + *yy_cp = (yy_hold_char); + yy_cp = (yy_last_accepting_cpos); + yy_current_state = (yy_last_accepting_state); + goto yy_find_action; + +case 1: +YY_RULE_SETUP +#line 198 "./util/configlexer.lex" +{ + LEXOUT(("SP ")); /* ignore */ } + YY_BREAK +case 2: +YY_RULE_SETUP +#line 200 "./util/configlexer.lex" +{ + /* note that flex makes the longest match and '.' is any but not nl */ + LEXOUT(("comment(%s) ", yytext)); /* ignore */ } + YY_BREAK +case 3: +YY_RULE_SETUP +#line 203 "./util/configlexer.lex" +{ YDVAR(0, VAR_SERVER) } + YY_BREAK +case 4: +YY_RULE_SETUP +#line 204 "./util/configlexer.lex" +{ YDVAR(1, VAR_NUM_THREADS) } + YY_BREAK +case 5: +YY_RULE_SETUP +#line 205 "./util/configlexer.lex" +{ YDVAR(1, VAR_VERBOSITY) } + YY_BREAK +case 6: +YY_RULE_SETUP +#line 206 "./util/configlexer.lex" +{ YDVAR(1, VAR_PORT) } + YY_BREAK +case 7: +YY_RULE_SETUP +#line 207 "./util/configlexer.lex" +{ YDVAR(1, VAR_OUTGOING_RANGE) } + YY_BREAK +case 8: +YY_RULE_SETUP +#line 208 "./util/configlexer.lex" +{ YDVAR(1, VAR_OUTGOING_PORT_PERMIT) } + YY_BREAK +case 9: +YY_RULE_SETUP +#line 209 "./util/configlexer.lex" +{ YDVAR(1, VAR_OUTGOING_PORT_AVOID) } + YY_BREAK +case 10: +YY_RULE_SETUP +#line 210 "./util/configlexer.lex" +{ YDVAR(1, VAR_OUTGOING_NUM_TCP) } + YY_BREAK +case 11: +YY_RULE_SETUP +#line 211 "./util/configlexer.lex" +{ YDVAR(1, VAR_INCOMING_NUM_TCP) } + YY_BREAK +case 12: +YY_RULE_SETUP +#line 212 "./util/configlexer.lex" +{ YDVAR(1, VAR_DO_IP4) } + YY_BREAK +case 13: +YY_RULE_SETUP +#line 213 "./util/configlexer.lex" +{ YDVAR(1, VAR_DO_IP6) } + YY_BREAK +case 14: +YY_RULE_SETUP +#line 214 "./util/configlexer.lex" +{ YDVAR(1, VAR_DO_UDP) } + YY_BREAK +case 15: +YY_RULE_SETUP +#line 215 "./util/configlexer.lex" +{ YDVAR(1, VAR_DO_TCP) } + YY_BREAK +case 16: +YY_RULE_SETUP +#line 216 "./util/configlexer.lex" +{ YDVAR(1, VAR_TCP_UPSTREAM) } + YY_BREAK +case 17: +YY_RULE_SETUP +#line 217 "./util/configlexer.lex" +{ YDVAR(1, VAR_SSL_UPSTREAM) } + YY_BREAK +case 18: +YY_RULE_SETUP +#line 218 "./util/configlexer.lex" +{ YDVAR(1, VAR_SSL_SERVICE_KEY) } + YY_BREAK +case 19: +YY_RULE_SETUP +#line 219 "./util/configlexer.lex" +{ YDVAR(1, VAR_SSL_SERVICE_PEM) } + YY_BREAK +case 20: +YY_RULE_SETUP +#line 220 "./util/configlexer.lex" +{ YDVAR(1, VAR_SSL_PORT) } + YY_BREAK +case 21: +YY_RULE_SETUP +#line 221 "./util/configlexer.lex" +{ YDVAR(1, VAR_DO_DAEMONIZE) } + YY_BREAK +case 22: +YY_RULE_SETUP +#line 222 "./util/configlexer.lex" +{ YDVAR(1, VAR_INTERFACE) } + YY_BREAK +case 23: +YY_RULE_SETUP +#line 223 "./util/configlexer.lex" +{ YDVAR(1, VAR_INTERFACE) } + YY_BREAK +case 24: +YY_RULE_SETUP +#line 224 "./util/configlexer.lex" +{ YDVAR(1, VAR_OUTGOING_INTERFACE) } + YY_BREAK +case 25: +YY_RULE_SETUP +#line 225 "./util/configlexer.lex" +{ YDVAR(1, VAR_INTERFACE_AUTOMATIC) } + YY_BREAK +case 26: +YY_RULE_SETUP +#line 226 "./util/configlexer.lex" +{ YDVAR(1, VAR_SO_RCVBUF) } + YY_BREAK +case 27: +YY_RULE_SETUP +#line 227 "./util/configlexer.lex" +{ YDVAR(1, VAR_SO_SNDBUF) } + YY_BREAK +case 28: +YY_RULE_SETUP +#line 228 "./util/configlexer.lex" +{ YDVAR(1, VAR_SO_REUSEPORT) } + YY_BREAK +case 29: +YY_RULE_SETUP +#line 229 "./util/configlexer.lex" +{ YDVAR(1, VAR_CHROOT) } + YY_BREAK +case 30: +YY_RULE_SETUP +#line 230 "./util/configlexer.lex" +{ YDVAR(1, VAR_USERNAME) } + YY_BREAK +case 31: +YY_RULE_SETUP +#line 231 "./util/configlexer.lex" +{ YDVAR(1, VAR_DIRECTORY) } + YY_BREAK +case 32: +YY_RULE_SETUP +#line 232 "./util/configlexer.lex" +{ YDVAR(1, VAR_LOGFILE) } + YY_BREAK +case 33: +YY_RULE_SETUP +#line 233 "./util/configlexer.lex" +{ YDVAR(1, VAR_PIDFILE) } + YY_BREAK +case 34: +YY_RULE_SETUP +#line 234 "./util/configlexer.lex" +{ YDVAR(1, VAR_ROOT_HINTS) } + YY_BREAK +case 35: +YY_RULE_SETUP +#line 235 "./util/configlexer.lex" +{ YDVAR(1, VAR_EDNS_BUFFER_SIZE) } + YY_BREAK +case 36: +YY_RULE_SETUP +#line 236 "./util/configlexer.lex" +{ YDVAR(1, VAR_MSG_BUFFER_SIZE) } + YY_BREAK +case 37: +YY_RULE_SETUP +#line 237 "./util/configlexer.lex" +{ YDVAR(1, VAR_MSG_CACHE_SIZE) } + YY_BREAK +case 38: +YY_RULE_SETUP +#line 238 "./util/configlexer.lex" +{ YDVAR(1, VAR_MSG_CACHE_SLABS) } + YY_BREAK +case 39: +YY_RULE_SETUP +#line 239 "./util/configlexer.lex" +{ YDVAR(1, VAR_RRSET_CACHE_SIZE) } + YY_BREAK +case 40: +YY_RULE_SETUP +#line 240 "./util/configlexer.lex" +{ YDVAR(1, VAR_RRSET_CACHE_SLABS) } + YY_BREAK +case 41: +YY_RULE_SETUP +#line 241 "./util/configlexer.lex" +{ YDVAR(1, VAR_CACHE_MAX_TTL) } + YY_BREAK +case 42: +YY_RULE_SETUP +#line 242 "./util/configlexer.lex" +{ YDVAR(1, VAR_CACHE_MIN_TTL) } + YY_BREAK +case 43: +YY_RULE_SETUP +#line 243 "./util/configlexer.lex" +{ YDVAR(1, VAR_INFRA_HOST_TTL) } + YY_BREAK +case 44: +YY_RULE_SETUP +#line 244 "./util/configlexer.lex" +{ YDVAR(1, VAR_INFRA_LAME_TTL) } + YY_BREAK +case 45: +YY_RULE_SETUP +#line 245 "./util/configlexer.lex" +{ YDVAR(1, VAR_INFRA_CACHE_SLABS) } + YY_BREAK +case 46: +YY_RULE_SETUP +#line 246 "./util/configlexer.lex" +{ YDVAR(1, VAR_INFRA_CACHE_NUMHOSTS) } + YY_BREAK +case 47: +YY_RULE_SETUP +#line 247 "./util/configlexer.lex" +{ YDVAR(1, VAR_INFRA_CACHE_LAME_SIZE) } + YY_BREAK +case 48: +YY_RULE_SETUP +#line 248 "./util/configlexer.lex" +{ YDVAR(1, VAR_NUM_QUERIES_PER_THREAD) } + YY_BREAK +case 49: +YY_RULE_SETUP +#line 249 "./util/configlexer.lex" +{ YDVAR(1, VAR_JOSTLE_TIMEOUT) } + YY_BREAK +case 50: +YY_RULE_SETUP +#line 250 "./util/configlexer.lex" +{ YDVAR(1, VAR_DELAY_CLOSE) } + YY_BREAK +case 51: +YY_RULE_SETUP +#line 251 "./util/configlexer.lex" +{ YDVAR(1, VAR_TARGET_FETCH_POLICY) } + YY_BREAK +case 52: +YY_RULE_SETUP +#line 252 "./util/configlexer.lex" +{ YDVAR(1, VAR_HARDEN_SHORT_BUFSIZE) } + YY_BREAK +case 53: +YY_RULE_SETUP +#line 253 "./util/configlexer.lex" +{ YDVAR(1, VAR_HARDEN_LARGE_QUERIES) } + YY_BREAK +case 54: +YY_RULE_SETUP +#line 254 "./util/configlexer.lex" +{ YDVAR(1, VAR_HARDEN_GLUE) } + YY_BREAK +case 55: +YY_RULE_SETUP +#line 255 "./util/configlexer.lex" +{ YDVAR(1, VAR_HARDEN_DNSSEC_STRIPPED) } + YY_BREAK +case 56: +YY_RULE_SETUP +#line 256 "./util/configlexer.lex" +{ YDVAR(1, VAR_HARDEN_BELOW_NXDOMAIN) } + YY_BREAK +case 57: +YY_RULE_SETUP +#line 257 "./util/configlexer.lex" +{ YDVAR(1, VAR_HARDEN_REFERRAL_PATH) } + YY_BREAK +case 58: +YY_RULE_SETUP +#line 258 "./util/configlexer.lex" +{ YDVAR(1, VAR_USE_CAPS_FOR_ID) } + YY_BREAK +case 59: +YY_RULE_SETUP +#line 259 "./util/configlexer.lex" +{ YDVAR(1, VAR_UNWANTED_REPLY_THRESHOLD) } + YY_BREAK +case 60: +YY_RULE_SETUP +#line 260 "./util/configlexer.lex" +{ YDVAR(1, VAR_PRIVATE_ADDRESS) } + YY_BREAK +case 61: +YY_RULE_SETUP +#line 261 "./util/configlexer.lex" +{ YDVAR(1, VAR_PRIVATE_DOMAIN) } + YY_BREAK +case 62: +YY_RULE_SETUP +#line 262 "./util/configlexer.lex" +{ YDVAR(1, VAR_PREFETCH_KEY) } + YY_BREAK +case 63: +YY_RULE_SETUP +#line 263 "./util/configlexer.lex" +{ YDVAR(1, VAR_PREFETCH) } + YY_BREAK +case 64: +YY_RULE_SETUP +#line 264 "./util/configlexer.lex" +{ YDVAR(0, VAR_STUB_ZONE) } + YY_BREAK +case 65: +YY_RULE_SETUP +#line 265 "./util/configlexer.lex" +{ YDVAR(1, VAR_NAME) } + YY_BREAK +case 66: +YY_RULE_SETUP +#line 266 "./util/configlexer.lex" +{ YDVAR(1, VAR_STUB_ADDR) } + YY_BREAK +case 67: +YY_RULE_SETUP +#line 267 "./util/configlexer.lex" +{ YDVAR(1, VAR_STUB_HOST) } + YY_BREAK +case 68: +YY_RULE_SETUP +#line 268 "./util/configlexer.lex" +{ YDVAR(1, VAR_STUB_PRIME) } + YY_BREAK +case 69: +YY_RULE_SETUP +#line 269 "./util/configlexer.lex" +{ YDVAR(1, VAR_STUB_FIRST) } + YY_BREAK +case 70: +YY_RULE_SETUP +#line 270 "./util/configlexer.lex" +{ YDVAR(0, VAR_FORWARD_ZONE) } + YY_BREAK +case 71: +YY_RULE_SETUP +#line 271 "./util/configlexer.lex" +{ YDVAR(1, VAR_FORWARD_ADDR) } + YY_BREAK +case 72: +YY_RULE_SETUP +#line 272 "./util/configlexer.lex" +{ YDVAR(1, VAR_FORWARD_HOST) } + YY_BREAK +case 73: +YY_RULE_SETUP +#line 273 "./util/configlexer.lex" +{ YDVAR(1, VAR_FORWARD_FIRST) } + YY_BREAK +case 74: +YY_RULE_SETUP +#line 274 "./util/configlexer.lex" +{ YDVAR(1, VAR_DO_NOT_QUERY_ADDRESS) } + YY_BREAK +case 75: +YY_RULE_SETUP +#line 275 "./util/configlexer.lex" +{ YDVAR(1, VAR_DO_NOT_QUERY_LOCALHOST) } + YY_BREAK +case 76: +YY_RULE_SETUP +#line 276 "./util/configlexer.lex" +{ YDVAR(2, VAR_ACCESS_CONTROL) } + YY_BREAK +case 77: +YY_RULE_SETUP +#line 277 "./util/configlexer.lex" +{ YDVAR(1, VAR_HIDE_IDENTITY) } + YY_BREAK +case 78: +YY_RULE_SETUP +#line 278 "./util/configlexer.lex" +{ YDVAR(1, VAR_HIDE_VERSION) } + YY_BREAK +case 79: +YY_RULE_SETUP +#line 279 "./util/configlexer.lex" +{ YDVAR(1, VAR_IDENTITY) } + YY_BREAK +case 80: +YY_RULE_SETUP +#line 280 "./util/configlexer.lex" +{ YDVAR(1, VAR_VERSION) } + YY_BREAK +case 81: +YY_RULE_SETUP +#line 281 "./util/configlexer.lex" +{ YDVAR(1, VAR_MODULE_CONF) } + YY_BREAK +case 82: +YY_RULE_SETUP +#line 282 "./util/configlexer.lex" +{ YDVAR(1, VAR_DLV_ANCHOR) } + YY_BREAK +case 83: +YY_RULE_SETUP +#line 283 "./util/configlexer.lex" +{ YDVAR(1, VAR_DLV_ANCHOR_FILE) } + YY_BREAK +case 84: +YY_RULE_SETUP +#line 284 "./util/configlexer.lex" +{ YDVAR(1, VAR_TRUST_ANCHOR_FILE) } + YY_BREAK +case 85: +YY_RULE_SETUP +#line 285 "./util/configlexer.lex" +{ YDVAR(1, VAR_AUTO_TRUST_ANCHOR_FILE) } + YY_BREAK +case 86: +YY_RULE_SETUP +#line 286 "./util/configlexer.lex" +{ YDVAR(1, VAR_TRUSTED_KEYS_FILE) } + YY_BREAK +case 87: +YY_RULE_SETUP +#line 287 "./util/configlexer.lex" +{ YDVAR(1, VAR_TRUST_ANCHOR) } + YY_BREAK +case 88: +YY_RULE_SETUP +#line 288 "./util/configlexer.lex" +{ YDVAR(1, VAR_VAL_OVERRIDE_DATE) } + YY_BREAK +case 89: +YY_RULE_SETUP +#line 289 "./util/configlexer.lex" +{ YDVAR(1, VAR_VAL_SIG_SKEW_MIN) } + YY_BREAK +case 90: +YY_RULE_SETUP +#line 290 "./util/configlexer.lex" +{ YDVAR(1, VAR_VAL_SIG_SKEW_MAX) } + YY_BREAK +case 91: +YY_RULE_SETUP +#line 291 "./util/configlexer.lex" +{ YDVAR(1, VAR_BOGUS_TTL) } + YY_BREAK +case 92: +YY_RULE_SETUP +#line 292 "./util/configlexer.lex" +{ YDVAR(1, VAR_VAL_CLEAN_ADDITIONAL) } + YY_BREAK +case 93: +YY_RULE_SETUP +#line 293 "./util/configlexer.lex" +{ YDVAR(1, VAR_VAL_PERMISSIVE_MODE) } + YY_BREAK +case 94: +YY_RULE_SETUP +#line 294 "./util/configlexer.lex" +{ YDVAR(1, VAR_IGNORE_CD_FLAG) } + YY_BREAK +case 95: +YY_RULE_SETUP +#line 295 "./util/configlexer.lex" +{ YDVAR(1, VAR_VAL_LOG_LEVEL) } + YY_BREAK +case 96: +YY_RULE_SETUP +#line 296 "./util/configlexer.lex" +{ YDVAR(1, VAR_KEY_CACHE_SIZE) } + YY_BREAK +case 97: +YY_RULE_SETUP +#line 297 "./util/configlexer.lex" +{ YDVAR(1, VAR_KEY_CACHE_SLABS) } + YY_BREAK +case 98: +YY_RULE_SETUP +#line 298 "./util/configlexer.lex" +{ YDVAR(1, VAR_NEG_CACHE_SIZE) } + YY_BREAK +case 99: +YY_RULE_SETUP +#line 299 "./util/configlexer.lex" +{ + YDVAR(1, VAR_VAL_NSEC3_KEYSIZE_ITERATIONS) } + YY_BREAK +case 100: +YY_RULE_SETUP +#line 301 "./util/configlexer.lex" +{ YDVAR(1, VAR_ADD_HOLDDOWN) } + YY_BREAK +case 101: +YY_RULE_SETUP +#line 302 "./util/configlexer.lex" +{ YDVAR(1, VAR_DEL_HOLDDOWN) } + YY_BREAK +case 102: +YY_RULE_SETUP +#line 303 "./util/configlexer.lex" +{ YDVAR(1, VAR_KEEP_MISSING) } + YY_BREAK +case 103: +YY_RULE_SETUP +#line 304 "./util/configlexer.lex" +{ YDVAR(1, VAR_USE_SYSLOG) } + YY_BREAK +case 104: +YY_RULE_SETUP +#line 305 "./util/configlexer.lex" +{ YDVAR(1, VAR_LOG_TIME_ASCII) } + YY_BREAK +case 105: +YY_RULE_SETUP +#line 306 "./util/configlexer.lex" +{ YDVAR(1, VAR_LOG_QUERIES) } + YY_BREAK +case 106: +YY_RULE_SETUP +#line 307 "./util/configlexer.lex" +{ YDVAR(2, VAR_LOCAL_ZONE) } + YY_BREAK +case 107: +YY_RULE_SETUP +#line 308 "./util/configlexer.lex" +{ YDVAR(1, VAR_LOCAL_DATA) } + YY_BREAK +case 108: +YY_RULE_SETUP +#line 309 "./util/configlexer.lex" +{ YDVAR(1, VAR_LOCAL_DATA_PTR) } + YY_BREAK +case 109: +YY_RULE_SETUP +#line 310 "./util/configlexer.lex" +{ YDVAR(1, VAR_UNBLOCK_LAN_ZONES) } + YY_BREAK +case 110: +YY_RULE_SETUP +#line 311 "./util/configlexer.lex" +{ YDVAR(1, VAR_STATISTICS_INTERVAL) } + YY_BREAK +case 111: +YY_RULE_SETUP +#line 312 "./util/configlexer.lex" +{ YDVAR(1, VAR_STATISTICS_CUMULATIVE) } + YY_BREAK +case 112: +YY_RULE_SETUP +#line 313 "./util/configlexer.lex" +{ YDVAR(1, VAR_EXTENDED_STATISTICS) } + YY_BREAK +case 113: +YY_RULE_SETUP +#line 314 "./util/configlexer.lex" +{ YDVAR(0, VAR_REMOTE_CONTROL) } + YY_BREAK +case 114: +YY_RULE_SETUP +#line 315 "./util/configlexer.lex" +{ YDVAR(1, VAR_CONTROL_ENABLE) } + YY_BREAK +case 115: +YY_RULE_SETUP +#line 316 "./util/configlexer.lex" +{ YDVAR(1, VAR_CONTROL_INTERFACE) } + YY_BREAK +case 116: +YY_RULE_SETUP +#line 317 "./util/configlexer.lex" +{ YDVAR(1, VAR_CONTROL_PORT) } + YY_BREAK +case 117: +YY_RULE_SETUP +#line 318 "./util/configlexer.lex" +{ YDVAR(1, VAR_SERVER_KEY_FILE) } + YY_BREAK +case 118: +YY_RULE_SETUP +#line 319 "./util/configlexer.lex" +{ YDVAR(1, VAR_SERVER_CERT_FILE) } + YY_BREAK +case 119: +YY_RULE_SETUP +#line 320 "./util/configlexer.lex" +{ YDVAR(1, VAR_CONTROL_KEY_FILE) } + YY_BREAK +case 120: +YY_RULE_SETUP +#line 321 "./util/configlexer.lex" +{ YDVAR(1, VAR_CONTROL_CERT_FILE) } + YY_BREAK +case 121: +YY_RULE_SETUP +#line 322 "./util/configlexer.lex" +{ YDVAR(1, VAR_PYTHON_SCRIPT) } + YY_BREAK +case 122: +YY_RULE_SETUP +#line 323 "./util/configlexer.lex" +{ YDVAR(0, VAR_PYTHON) } + YY_BREAK +case 123: +YY_RULE_SETUP +#line 324 "./util/configlexer.lex" +{ YDVAR(1, VAR_DOMAIN_INSECURE) } + YY_BREAK +case 124: +YY_RULE_SETUP +#line 325 "./util/configlexer.lex" +{ YDVAR(1, VAR_MINIMAL_RESPONSES) } + YY_BREAK +case 125: +YY_RULE_SETUP +#line 326 "./util/configlexer.lex" +{ YDVAR(1, VAR_RRSET_ROUNDROBIN) } + YY_BREAK +case 126: +YY_RULE_SETUP +#line 327 "./util/configlexer.lex" +{ YDVAR(1, VAR_MAX_UDP_SIZE) } + YY_BREAK +case 127: +YY_RULE_SETUP +#line 328 "./util/configlexer.lex" +{ YDVAR(1, VAR_DNS64_PREFIX) } + YY_BREAK +case 128: +YY_RULE_SETUP +#line 329 "./util/configlexer.lex" +{ YDVAR(1, VAR_DNS64_SYNTHALL) } + YY_BREAK +case 129: +YY_RULE_SETUP +#line 330 "./util/configlexer.lex" +{ YDVAR(0, VAR_DNSTAP) } + YY_BREAK +case 130: +YY_RULE_SETUP +#line 331 "./util/configlexer.lex" +{ YDVAR(1, VAR_DNSTAP_ENABLE) } + YY_BREAK +case 131: +YY_RULE_SETUP +#line 332 "./util/configlexer.lex" +{ YDVAR(1, VAR_DNSTAP_SOCKET_PATH) } + YY_BREAK +case 132: +YY_RULE_SETUP +#line 333 "./util/configlexer.lex" +{ YDVAR(1, VAR_DNSTAP_SEND_IDENTITY) } + YY_BREAK +case 133: +YY_RULE_SETUP +#line 334 "./util/configlexer.lex" +{ YDVAR(1, VAR_DNSTAP_SEND_VERSION) } + YY_BREAK +case 134: +YY_RULE_SETUP +#line 335 "./util/configlexer.lex" +{ YDVAR(1, VAR_DNSTAP_IDENTITY) } + YY_BREAK +case 135: +YY_RULE_SETUP +#line 336 "./util/configlexer.lex" +{ YDVAR(1, VAR_DNSTAP_VERSION) } + YY_BREAK +case 136: +YY_RULE_SETUP +#line 337 "./util/configlexer.lex" +{ + YDVAR(1, VAR_DNSTAP_LOG_RESOLVER_QUERY_MESSAGES) } + YY_BREAK +case 137: +YY_RULE_SETUP +#line 339 "./util/configlexer.lex" +{ + YDVAR(1, VAR_DNSTAP_LOG_RESOLVER_RESPONSE_MESSAGES) } + YY_BREAK +case 138: +YY_RULE_SETUP +#line 341 "./util/configlexer.lex" +{ + YDVAR(1, VAR_DNSTAP_LOG_CLIENT_QUERY_MESSAGES) } + YY_BREAK +case 139: +YY_RULE_SETUP +#line 343 "./util/configlexer.lex" +{ + YDVAR(1, VAR_DNSTAP_LOG_CLIENT_RESPONSE_MESSAGES) } + YY_BREAK +case 140: +YY_RULE_SETUP +#line 345 "./util/configlexer.lex" +{ + YDVAR(1, VAR_DNSTAP_LOG_FORWARDER_QUERY_MESSAGES) } + YY_BREAK +case 141: +YY_RULE_SETUP +#line 347 "./util/configlexer.lex" +{ + YDVAR(1, VAR_DNSTAP_LOG_FORWARDER_RESPONSE_MESSAGES) } + YY_BREAK +case 142: +/* rule 142 can match eol */ +YY_RULE_SETUP +#line 349 "./util/configlexer.lex" +{ LEXOUT(("NL\n")); cfg_parser->line++; } + YY_BREAK +/* Quoted strings. Strip leading and ending quotes */ +case 143: +YY_RULE_SETUP +#line 352 "./util/configlexer.lex" +{ BEGIN(quotedstring); LEXOUT(("QS ")); } + YY_BREAK +case YY_STATE_EOF(quotedstring): +#line 353 "./util/configlexer.lex" +{ + yyerror("EOF inside quoted string"); + if(--num_args == 0) { BEGIN(INITIAL); } + else { BEGIN(val); } +} + YY_BREAK +case 144: +YY_RULE_SETUP +#line 358 "./util/configlexer.lex" +{ LEXOUT(("STR(%s) ", yytext)); yymore(); } + YY_BREAK +case 145: +/* rule 145 can match eol */ +YY_RULE_SETUP +#line 359 "./util/configlexer.lex" +{ yyerror("newline inside quoted string, no end \""); + cfg_parser->line++; BEGIN(INITIAL); } + YY_BREAK +case 146: +YY_RULE_SETUP +#line 361 "./util/configlexer.lex" +{ + LEXOUT(("QE ")); + if(--num_args == 0) { BEGIN(INITIAL); } + else { BEGIN(val); } + yytext[yyleng - 1] = '\0'; + yylval.str = strdup(yytext); + if(!yylval.str) + yyerror("out of memory"); + return STRING_ARG; +} + YY_BREAK +/* Single Quoted strings. Strip leading and ending quotes */ +case 147: +YY_RULE_SETUP +#line 373 "./util/configlexer.lex" +{ BEGIN(singlequotedstr); LEXOUT(("SQS ")); } + YY_BREAK +case YY_STATE_EOF(singlequotedstr): +#line 374 "./util/configlexer.lex" +{ + yyerror("EOF inside quoted string"); + if(--num_args == 0) { BEGIN(INITIAL); } + else { BEGIN(val); } +} + YY_BREAK +case 148: +YY_RULE_SETUP +#line 379 "./util/configlexer.lex" +{ LEXOUT(("STR(%s) ", yytext)); yymore(); } + YY_BREAK +case 149: +/* rule 149 can match eol */ +YY_RULE_SETUP +#line 380 "./util/configlexer.lex" +{ yyerror("newline inside quoted string, no end '"); + cfg_parser->line++; BEGIN(INITIAL); } + YY_BREAK +case 150: +YY_RULE_SETUP +#line 382 "./util/configlexer.lex" +{ + LEXOUT(("SQE ")); + if(--num_args == 0) { BEGIN(INITIAL); } + else { BEGIN(val); } + yytext[yyleng - 1] = '\0'; + yylval.str = strdup(yytext); + if(!yylval.str) + yyerror("out of memory"); + return STRING_ARG; +} + YY_BREAK +/* include: directive */ +case 151: +YY_RULE_SETUP +#line 394 "./util/configlexer.lex" +{ + LEXOUT(("v(%s) ", yytext)); inc_prev = YYSTATE; BEGIN(include); } + YY_BREAK +case YY_STATE_EOF(include): +#line 396 "./util/configlexer.lex" +{ + yyerror("EOF inside include directive"); + BEGIN(inc_prev); +} + YY_BREAK +case 152: +YY_RULE_SETUP +#line 400 "./util/configlexer.lex" +{ LEXOUT(("ISP ")); /* ignore */ } + YY_BREAK +case 153: +/* rule 153 can match eol */ +YY_RULE_SETUP +#line 401 "./util/configlexer.lex" +{ LEXOUT(("NL\n")); cfg_parser->line++;} + YY_BREAK +case 154: +YY_RULE_SETUP +#line 402 "./util/configlexer.lex" +{ LEXOUT(("IQS ")); BEGIN(include_quoted); } + YY_BREAK +case 155: +YY_RULE_SETUP +#line 403 "./util/configlexer.lex" +{ + LEXOUT(("Iunquotedstr(%s) ", yytext)); + config_start_include_glob(yytext); + BEGIN(inc_prev); +} + YY_BREAK +case YY_STATE_EOF(include_quoted): +#line 408 "./util/configlexer.lex" +{ + yyerror("EOF inside quoted string"); + BEGIN(inc_prev); +} + YY_BREAK +case 156: +YY_RULE_SETUP +#line 412 "./util/configlexer.lex" +{ LEXOUT(("ISTR(%s) ", yytext)); yymore(); } + YY_BREAK +case 157: +/* rule 157 can match eol */ +YY_RULE_SETUP +#line 413 "./util/configlexer.lex" +{ yyerror("newline before \" in include name"); + cfg_parser->line++; BEGIN(inc_prev); } + YY_BREAK +case 158: +YY_RULE_SETUP +#line 415 "./util/configlexer.lex" +{ + LEXOUT(("IQE ")); + yytext[yyleng - 1] = '\0'; + config_start_include_glob(yytext); + BEGIN(inc_prev); +} + YY_BREAK +case YY_STATE_EOF(INITIAL): +case YY_STATE_EOF(val): +#line 421 "./util/configlexer.lex" +{ + LEXOUT(("LEXEOF ")); + yy_set_bol(1); /* Set beginning of line, so "^" rules match. */ + if (!config_include_stack) { + yyterminate(); + } else { + fclose(yyin); + config_end_include(); + } +} + YY_BREAK +case 159: +YY_RULE_SETUP +#line 432 "./util/configlexer.lex" +{ LEXOUT(("unquotedstr(%s) ", yytext)); + if(--num_args == 0) { BEGIN(INITIAL); } + yylval.str = strdup(yytext); return STRING_ARG; } + YY_BREAK +case 160: +YY_RULE_SETUP +#line 436 "./util/configlexer.lex" +{ + ub_c_error_msg("unknown keyword '%s'", yytext); + } + YY_BREAK +case 161: +YY_RULE_SETUP +#line 440 "./util/configlexer.lex" +{ + ub_c_error_msg("stray '%s'", yytext); + } + YY_BREAK +case 162: +YY_RULE_SETUP +#line 444 "./util/configlexer.lex" +ECHO; + YY_BREAK +#line 3064 "<stdout>" + + case YY_END_OF_BUFFER: + { + /* Amount of text matched not including the EOB char. */ + int yy_amount_of_matched_text = (int) (yy_cp - (yytext_ptr)) - 1; + + /* Undo the effects of YY_DO_BEFORE_ACTION. */ + *yy_cp = (yy_hold_char); + YY_RESTORE_YY_MORE_OFFSET + + if ( YY_CURRENT_BUFFER_LVALUE->yy_buffer_status == YY_BUFFER_NEW ) + { + /* We're scanning a new file or input source. It's + * possible that this happened because the user + * just pointed yyin at a new source and called + * yylex(). If so, then we have to assure + * consistency between YY_CURRENT_BUFFER and our + * globals. Here is the right place to do so, because + * this is the first action (other than possibly a + * back-up) that will match for the new input source. + */ + (yy_n_chars) = YY_CURRENT_BUFFER_LVALUE->yy_n_chars; + YY_CURRENT_BUFFER_LVALUE->yy_input_file = yyin; + YY_CURRENT_BUFFER_LVALUE->yy_buffer_status = YY_BUFFER_NORMAL; + } + + /* Note that here we test for yy_c_buf_p "<=" to the position + * of the first EOB in the buffer, since yy_c_buf_p will + * already have been incremented past the NUL character + * (since all states make transitions on EOB to the + * end-of-buffer state). Contrast this with the test + * in input(). + */ + if ( (yy_c_buf_p) <= &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars)] ) + { /* This was really a NUL. */ + yy_state_type yy_next_state; + + (yy_c_buf_p) = (yytext_ptr) + yy_amount_of_matched_text; + + yy_current_state = yy_get_previous_state( ); + + /* Okay, we're now positioned to make the NUL + * transition. We couldn't have + * yy_get_previous_state() go ahead and do it + * for us because it doesn't know how to deal + * with the possibility of jamming (and we don't + * want to build jamming into it because then it + * will run more slowly). + */ + + yy_next_state = yy_try_NUL_trans( yy_current_state ); + + yy_bp = (yytext_ptr) + YY_MORE_ADJ; + + if ( yy_next_state ) + { + /* Consume the NUL. */ + yy_cp = ++(yy_c_buf_p); + yy_current_state = yy_next_state; + goto yy_match; + } + + else + { + yy_cp = (yy_c_buf_p); + goto yy_find_action; + } + } + + else switch ( yy_get_next_buffer( ) ) + { + case EOB_ACT_END_OF_FILE: + { + (yy_did_buffer_switch_on_eof) = 0; + + if ( yywrap( ) ) + { + /* Note: because we've taken care in + * yy_get_next_buffer() to have set up + * yytext, we can now set up + * yy_c_buf_p so that if some total + * hoser (like flex itself) wants to + * call the scanner after we return the + * YY_NULL, it'll still work - another + * YY_NULL will get returned. + */ + (yy_c_buf_p) = (yytext_ptr) + YY_MORE_ADJ; + + yy_act = YY_STATE_EOF(YY_START); + goto do_action; + } + + else + { + if ( ! (yy_did_buffer_switch_on_eof) ) + YY_NEW_FILE; + } + break; + } + + case EOB_ACT_CONTINUE_SCAN: + (yy_c_buf_p) = + (yytext_ptr) + yy_amount_of_matched_text; + + yy_current_state = yy_get_previous_state( ); + + yy_cp = (yy_c_buf_p); + yy_bp = (yytext_ptr) + YY_MORE_ADJ; + goto yy_match; + + case EOB_ACT_LAST_MATCH: + (yy_c_buf_p) = + &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars)]; + + yy_current_state = yy_get_previous_state( ); + + yy_cp = (yy_c_buf_p); + yy_bp = (yytext_ptr) + YY_MORE_ADJ; + goto yy_find_action; + } + break; + } + + default: + YY_FATAL_ERROR( + "fatal flex scanner internal error--no action found" ); + } /* end of action switch */ + } /* end of scanning one token */ +} /* end of yylex */ + +/* yy_get_next_buffer - try to read in a new buffer + * + * Returns a code representing an action: + * EOB_ACT_LAST_MATCH - + * EOB_ACT_CONTINUE_SCAN - continue scanning from current position + * EOB_ACT_END_OF_FILE - end of file + */ +static int yy_get_next_buffer (void) +{ + register char *dest = YY_CURRENT_BUFFER_LVALUE->yy_ch_buf; + register char *source = (yytext_ptr); + register int number_to_move, i; + int ret_val; + + if ( (yy_c_buf_p) > &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars) + 1] ) + YY_FATAL_ERROR( + "fatal flex scanner internal error--end of buffer missed" ); + + if ( YY_CURRENT_BUFFER_LVALUE->yy_fill_buffer == 0 ) + { /* Don't try to fill the buffer, so this is an EOF. */ + if ( (yy_c_buf_p) - (yytext_ptr) - YY_MORE_ADJ == 1 ) + { + /* We matched a single character, the EOB, so + * treat this as a final EOF. + */ + return EOB_ACT_END_OF_FILE; + } + + else + { + /* We matched some text prior to the EOB, first + * process it. + */ + return EOB_ACT_LAST_MATCH; + } + } + + /* Try to read more data. */ + + /* First move last chars to start of buffer. */ + number_to_move = (int) ((yy_c_buf_p) - (yytext_ptr)) - 1; + + for ( i = 0; i < number_to_move; ++i ) + *(dest++) = *(source++); + + if ( YY_CURRENT_BUFFER_LVALUE->yy_buffer_status == YY_BUFFER_EOF_PENDING ) + /* don't do the read, it's not guaranteed to return an EOF, + * just force an EOF + */ + YY_CURRENT_BUFFER_LVALUE->yy_n_chars = (yy_n_chars) = 0; + + else + { + yy_size_t num_to_read = + YY_CURRENT_BUFFER_LVALUE->yy_buf_size - number_to_move - 1; + + while ( num_to_read <= 0 ) + { /* Not enough room in the buffer - grow it. */ + + /* just a shorter name for the current buffer */ + YY_BUFFER_STATE b = YY_CURRENT_BUFFER_LVALUE; + + int yy_c_buf_p_offset = + (int) ((yy_c_buf_p) - b->yy_ch_buf); + + if ( b->yy_is_our_buffer ) + { + yy_size_t new_size = b->yy_buf_size * 2; + + if ( new_size <= 0 ) + b->yy_buf_size += b->yy_buf_size / 8; + else + b->yy_buf_size *= 2; + + b->yy_ch_buf = (char *) + /* Include room in for 2 EOB chars. */ + yyrealloc((void *) b->yy_ch_buf,b->yy_buf_size + 2 ); + } + else + /* Can't grow it, we don't own it. */ + b->yy_ch_buf = 0; + + if ( ! b->yy_ch_buf ) + YY_FATAL_ERROR( + "fatal error - scanner input buffer overflow" ); + + (yy_c_buf_p) = &b->yy_ch_buf[yy_c_buf_p_offset]; + + num_to_read = YY_CURRENT_BUFFER_LVALUE->yy_buf_size - + number_to_move - 1; + + } + + if ( num_to_read > YY_READ_BUF_SIZE ) + num_to_read = YY_READ_BUF_SIZE; + + /* Read in more data. */ + YY_INPUT( (&YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[number_to_move]), + (yy_n_chars), num_to_read ); + + YY_CURRENT_BUFFER_LVALUE->yy_n_chars = (yy_n_chars); + } + + if ( (yy_n_chars) == 0 ) + { + if ( number_to_move == YY_MORE_ADJ ) + { + ret_val = EOB_ACT_END_OF_FILE; + yyrestart(yyin ); + } + + else + { + ret_val = EOB_ACT_LAST_MATCH; + YY_CURRENT_BUFFER_LVALUE->yy_buffer_status = + YY_BUFFER_EOF_PENDING; + } + } + + else + ret_val = EOB_ACT_CONTINUE_SCAN; + + if ((yy_size_t) ((yy_n_chars) + number_to_move) > YY_CURRENT_BUFFER_LVALUE->yy_buf_size) { + /* Extend the array by 50%, plus the number we really need. */ + yy_size_t new_size = (yy_n_chars) + number_to_move + ((yy_n_chars) >> 1); + YY_CURRENT_BUFFER_LVALUE->yy_ch_buf = (char *) yyrealloc((void *) YY_CURRENT_BUFFER_LVALUE->yy_ch_buf,new_size ); + if ( ! YY_CURRENT_BUFFER_LVALUE->yy_ch_buf ) + YY_FATAL_ERROR( "out of dynamic memory in yy_get_next_buffer()" ); + } + + (yy_n_chars) += number_to_move; + YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars)] = YY_END_OF_BUFFER_CHAR; + YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars) + 1] = YY_END_OF_BUFFER_CHAR; + + (yytext_ptr) = &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[0]; + + return ret_val; +} + +/* yy_get_previous_state - get the state just before the EOB char was reached */ + + static yy_state_type yy_get_previous_state (void) +{ + register yy_state_type yy_current_state; + register char *yy_cp; + + yy_current_state = (yy_start); + + for ( yy_cp = (yytext_ptr) + YY_MORE_ADJ; yy_cp < (yy_c_buf_p); ++yy_cp ) + { + register YY_CHAR yy_c = (*yy_cp ? yy_ec[YY_SC_TO_UI(*yy_cp)] : 1); + if ( yy_accept[yy_current_state] ) + { + (yy_last_accepting_state) = yy_current_state; + (yy_last_accepting_cpos) = yy_cp; + } + while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state ) + { + yy_current_state = (int) yy_def[yy_current_state]; + if ( yy_current_state >= 1611 ) + yy_c = yy_meta[(unsigned int) yy_c]; + } + yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c]; + } + + return yy_current_state; +} + +/* yy_try_NUL_trans - try to make a transition on the NUL character + * + * synopsis + * next_state = yy_try_NUL_trans( current_state ); + */ + static yy_state_type yy_try_NUL_trans (yy_state_type yy_current_state ) +{ + register int yy_is_jam; + register char *yy_cp = (yy_c_buf_p); + + register YY_CHAR yy_c = 1; + if ( yy_accept[yy_current_state] ) + { + (yy_last_accepting_state) = yy_current_state; + (yy_last_accepting_cpos) = yy_cp; + } + while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state ) + { + yy_current_state = (int) yy_def[yy_current_state]; + if ( yy_current_state >= 1611 ) + yy_c = yy_meta[(unsigned int) yy_c]; + } + yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c]; + yy_is_jam = (yy_current_state == 1610); + + return yy_is_jam ? 0 : yy_current_state; +} + +#ifndef YY_NO_INPUT +#ifdef __cplusplus + static int yyinput (void) +#else + static int input (void) +#endif + +{ + int c; + + *(yy_c_buf_p) = (yy_hold_char); + + if ( *(yy_c_buf_p) == YY_END_OF_BUFFER_CHAR ) + { + /* yy_c_buf_p now points to the character we want to return. + * If this occurs *before* the EOB characters, then it's a + * valid NUL; if not, then we've hit the end of the buffer. + */ + if ( (yy_c_buf_p) < &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars)] ) + /* This was really a NUL. */ + *(yy_c_buf_p) = '\0'; + + else + { /* need more input */ + yy_size_t offset = (yy_c_buf_p) - (yytext_ptr); + ++(yy_c_buf_p); + + switch ( yy_get_next_buffer( ) ) + { + case EOB_ACT_LAST_MATCH: + /* This happens because yy_g_n_b() + * sees that we've accumulated a + * token and flags that we need to + * try matching the token before + * proceeding. But for input(), + * there's no matching to consider. + * So convert the EOB_ACT_LAST_MATCH + * to EOB_ACT_END_OF_FILE. + */ + + /* Reset buffer status. */ + yyrestart(yyin ); + + /*FALLTHROUGH*/ + + case EOB_ACT_END_OF_FILE: + { + if ( yywrap( ) ) + return EOF; + + if ( ! (yy_did_buffer_switch_on_eof) ) + YY_NEW_FILE; +#ifdef __cplusplus + return yyinput(); +#else + return input(); +#endif + } + + case EOB_ACT_CONTINUE_SCAN: + (yy_c_buf_p) = (yytext_ptr) + offset; + break; + } + } + } + + c = *(unsigned char *) (yy_c_buf_p); /* cast for 8-bit char's */ + *(yy_c_buf_p) = '\0'; /* preserve yytext */ + (yy_hold_char) = *++(yy_c_buf_p); + + return c; +} +#endif /* ifndef YY_NO_INPUT */ + +/** Immediately switch to a different input stream. + * @param input_file A readable stream. + * + * @note This function does not reset the start condition to @c INITIAL . + */ + void yyrestart (FILE * input_file ) +{ + + if ( ! YY_CURRENT_BUFFER ){ + yyensure_buffer_stack (); + YY_CURRENT_BUFFER_LVALUE = + yy_create_buffer(yyin,YY_BUF_SIZE ); + } + + yy_init_buffer(YY_CURRENT_BUFFER,input_file ); + yy_load_buffer_state( ); +} + +/** Switch to a different input buffer. + * @param new_buffer The new input buffer. + * + */ + void yy_switch_to_buffer (YY_BUFFER_STATE new_buffer ) +{ + + /* TODO. We should be able to replace this entire function body + * with + * yypop_buffer_state(); + * yypush_buffer_state(new_buffer); + */ + yyensure_buffer_stack (); + if ( YY_CURRENT_BUFFER == new_buffer ) + return; + + if ( YY_CURRENT_BUFFER ) + { + /* Flush out information for old buffer. */ + *(yy_c_buf_p) = (yy_hold_char); + YY_CURRENT_BUFFER_LVALUE->yy_buf_pos = (yy_c_buf_p); + YY_CURRENT_BUFFER_LVALUE->yy_n_chars = (yy_n_chars); + } + + YY_CURRENT_BUFFER_LVALUE = new_buffer; + yy_load_buffer_state( ); + + /* We don't actually know whether we did this switch during + * EOF (yywrap()) processing, but the only time this flag + * is looked at is after yywrap() is called, so it's safe + * to go ahead and always set it. + */ + (yy_did_buffer_switch_on_eof) = 1; +} + +static void yy_load_buffer_state (void) +{ + (yy_n_chars) = YY_CURRENT_BUFFER_LVALUE->yy_n_chars; + (yytext_ptr) = (yy_c_buf_p) = YY_CURRENT_BUFFER_LVALUE->yy_buf_pos; + yyin = YY_CURRENT_BUFFER_LVALUE->yy_input_file; + (yy_hold_char) = *(yy_c_buf_p); +} + +/** Allocate and initialize an input buffer state. + * @param file A readable stream. + * @param size The character buffer size in bytes. When in doubt, use @c YY_BUF_SIZE. + * + * @return the allocated buffer state. + */ + YY_BUFFER_STATE yy_create_buffer (FILE * file, int size ) +{ + YY_BUFFER_STATE b; + + b = (YY_BUFFER_STATE) yyalloc(sizeof( struct yy_buffer_state ) ); + if ( ! b ) + YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" ); + + b->yy_buf_size = size; + + /* yy_ch_buf has to be 2 characters longer than the size given because + * we need to put in 2 end-of-buffer characters. + */ + b->yy_ch_buf = (char *) yyalloc(b->yy_buf_size + 2 ); + if ( ! b->yy_ch_buf ) + YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" ); + + b->yy_is_our_buffer = 1; + + yy_init_buffer(b,file ); + + return b; +} + +/** Destroy the buffer. + * @param b a buffer created with yy_create_buffer() + * + */ + void yy_delete_buffer (YY_BUFFER_STATE b ) +{ + + if ( ! b ) + return; + + if ( b == YY_CURRENT_BUFFER ) /* Not sure if we should pop here. */ + YY_CURRENT_BUFFER_LVALUE = (YY_BUFFER_STATE) 0; + + if ( b->yy_is_our_buffer ) + yyfree((void *) b->yy_ch_buf ); + + yyfree((void *) b ); +} + +/* Initializes or reinitializes a buffer. + * This function is sometimes called more than once on the same buffer, + * such as during a yyrestart() or at EOF. + */ + static void yy_init_buffer (YY_BUFFER_STATE b, FILE * file ) + +{ + int oerrno = errno; + + yy_flush_buffer(b ); + + b->yy_input_file = file; + b->yy_fill_buffer = 1; + + /* If b is the current buffer, then yy_init_buffer was _probably_ + * called from yyrestart() or through yy_get_next_buffer. + * In that case, we don't want to reset the lineno or column. + */ + if (b != YY_CURRENT_BUFFER){ + b->yy_bs_lineno = 1; + b->yy_bs_column = 0; + } + + b->yy_is_interactive = file ? (isatty( fileno(file) ) > 0) : 0; + + errno = oerrno; +} + +/** Discard all buffered characters. On the next scan, YY_INPUT will be called. + * @param b the buffer state to be flushed, usually @c YY_CURRENT_BUFFER. + * + */ + void yy_flush_buffer (YY_BUFFER_STATE b ) +{ + if ( ! b ) + return; + + b->yy_n_chars = 0; + + /* We always need two end-of-buffer characters. The first causes + * a transition to the end-of-buffer state. The second causes + * a jam in that state. + */ + b->yy_ch_buf[0] = YY_END_OF_BUFFER_CHAR; + b->yy_ch_buf[1] = YY_END_OF_BUFFER_CHAR; + + b->yy_buf_pos = &b->yy_ch_buf[0]; + + b->yy_at_bol = 1; + b->yy_buffer_status = YY_BUFFER_NEW; + + if ( b == YY_CURRENT_BUFFER ) + yy_load_buffer_state( ); +} + +/** Pushes the new state onto the stack. The new state becomes + * the current state. This function will allocate the stack + * if necessary. + * @param new_buffer The new state. + * + */ +void yypush_buffer_state (YY_BUFFER_STATE new_buffer ) +{ + if (new_buffer == NULL) + return; + + yyensure_buffer_stack(); + + /* This block is copied from yy_switch_to_buffer. */ + if ( YY_CURRENT_BUFFER ) + { + /* Flush out information for old buffer. */ + *(yy_c_buf_p) = (yy_hold_char); + YY_CURRENT_BUFFER_LVALUE->yy_buf_pos = (yy_c_buf_p); + YY_CURRENT_BUFFER_LVALUE->yy_n_chars = (yy_n_chars); + } + + /* Only push if top exists. Otherwise, replace top. */ + if (YY_CURRENT_BUFFER) + (yy_buffer_stack_top)++; + YY_CURRENT_BUFFER_LVALUE = new_buffer; + + /* copied from yy_switch_to_buffer. */ + yy_load_buffer_state( ); + (yy_did_buffer_switch_on_eof) = 1; +} + +/** Removes and deletes the top of the stack, if present. + * The next element becomes the new top. + * + */ +void yypop_buffer_state (void) +{ + if (!YY_CURRENT_BUFFER) + return; + + yy_delete_buffer(YY_CURRENT_BUFFER ); + YY_CURRENT_BUFFER_LVALUE = NULL; + if ((yy_buffer_stack_top) > 0) + --(yy_buffer_stack_top); + + if (YY_CURRENT_BUFFER) { + yy_load_buffer_state( ); + (yy_did_buffer_switch_on_eof) = 1; + } +} + +/* Allocates the stack if it does not exist. + * Guarantees space for at least one push. + */ +static void yyensure_buffer_stack (void) +{ + yy_size_t num_to_alloc; + + if (!(yy_buffer_stack)) { + + /* First allocation is just for 2 elements, since we don't know if this + * scanner will even need a stack. We use 2 instead of 1 to avoid an + * immediate realloc on the next call. + */ + num_to_alloc = 1; + (yy_buffer_stack) = (struct yy_buffer_state**)yyalloc + (num_to_alloc * sizeof(struct yy_buffer_state*) + ); + if ( ! (yy_buffer_stack) ) + YY_FATAL_ERROR( "out of dynamic memory in yyensure_buffer_stack()" ); + + memset((yy_buffer_stack), 0, num_to_alloc * sizeof(struct yy_buffer_state*)); + + (yy_buffer_stack_max) = num_to_alloc; + (yy_buffer_stack_top) = 0; + return; + } + + if ((yy_buffer_stack_top) >= ((yy_buffer_stack_max)) - 1){ + + /* Increase the buffer to prepare for a possible push. */ + int grow_size = 8 /* arbitrary grow size */; + + num_to_alloc = (yy_buffer_stack_max) + grow_size; + (yy_buffer_stack) = (struct yy_buffer_state**)yyrealloc + ((yy_buffer_stack), + num_to_alloc * sizeof(struct yy_buffer_state*) + ); + if ( ! (yy_buffer_stack) ) + YY_FATAL_ERROR( "out of dynamic memory in yyensure_buffer_stack()" ); + + /* zero only the new slots.*/ + memset((yy_buffer_stack) + (yy_buffer_stack_max), 0, grow_size * sizeof(struct yy_buffer_state*)); + (yy_buffer_stack_max) = num_to_alloc; + } +} + +/** Setup the input buffer state to scan directly from a user-specified character buffer. + * @param base the character buffer + * @param size the size in bytes of the character buffer + * + * @return the newly allocated buffer state object. + */ +YY_BUFFER_STATE yy_scan_buffer (char * base, yy_size_t size ) +{ + YY_BUFFER_STATE b; + + if ( size < 2 || + base[size-2] != YY_END_OF_BUFFER_CHAR || + base[size-1] != YY_END_OF_BUFFER_CHAR ) + /* They forgot to leave room for the EOB's. */ + return 0; + + b = (YY_BUFFER_STATE) yyalloc(sizeof( struct yy_buffer_state ) ); + if ( ! b ) + YY_FATAL_ERROR( "out of dynamic memory in yy_scan_buffer()" ); + + b->yy_buf_size = size - 2; /* "- 2" to take care of EOB's */ + b->yy_buf_pos = b->yy_ch_buf = base; + b->yy_is_our_buffer = 0; + b->yy_input_file = 0; + b->yy_n_chars = b->yy_buf_size; + b->yy_is_interactive = 0; + b->yy_at_bol = 1; + b->yy_fill_buffer = 0; + b->yy_buffer_status = YY_BUFFER_NEW; + + yy_switch_to_buffer(b ); + + return b; +} + +/** Setup the input buffer state to scan a string. The next call to yylex() will + * scan from a @e copy of @a str. + * @param yystr a NUL-terminated string to scan + * + * @return the newly allocated buffer state object. + * @note If you want to scan bytes that may contain NUL values, then use + * yy_scan_bytes() instead. + */ +YY_BUFFER_STATE yy_scan_string (yyconst char * yystr ) +{ + + return yy_scan_bytes(yystr,strlen(yystr) ); +} + +/** Setup the input buffer state to scan the given bytes. The next call to yylex() will + * scan from a @e copy of @a bytes. + * @param yybytes the byte buffer to scan + * @param _yybytes_len the number of bytes in the buffer pointed to by @a bytes. + * + * @return the newly allocated buffer state object. + */ +YY_BUFFER_STATE yy_scan_bytes (yyconst char * yybytes, yy_size_t _yybytes_len ) +{ + YY_BUFFER_STATE b; + char *buf; + yy_size_t n; + int i; + + /* Get memory for full buffer, including space for trailing EOB's. */ + n = _yybytes_len + 2; + buf = (char *) yyalloc(n ); + if ( ! buf ) + YY_FATAL_ERROR( "out of dynamic memory in yy_scan_bytes()" ); + + for ( i = 0; i < _yybytes_len; ++i ) + buf[i] = yybytes[i]; + + buf[_yybytes_len] = buf[_yybytes_len+1] = YY_END_OF_BUFFER_CHAR; + + b = yy_scan_buffer(buf,n ); + if ( ! b ) + YY_FATAL_ERROR( "bad buffer in yy_scan_bytes()" ); + + /* It's okay to grow etc. this buffer, and we should throw it + * away when we're done. + */ + b->yy_is_our_buffer = 1; + + return b; +} + +#ifndef YY_EXIT_FAILURE +#define YY_EXIT_FAILURE 2 +#endif + +static void yy_fatal_error (yyconst char* msg ) +{ + (void) fprintf( stderr, "%s\n", msg ); + exit( YY_EXIT_FAILURE ); +} + +/* Redefine yyless() so it works in section 3 code. */ + +#undef yyless +#define yyless(n) \ + do \ + { \ + /* Undo effects of setting up yytext. */ \ + int yyless_macro_arg = (n); \ + YY_LESS_LINENO(yyless_macro_arg);\ + yytext[yyleng] = (yy_hold_char); \ + (yy_c_buf_p) = yytext + yyless_macro_arg; \ + (yy_hold_char) = *(yy_c_buf_p); \ + *(yy_c_buf_p) = '\0'; \ + yyleng = yyless_macro_arg; \ + } \ + while ( 0 ) + +/* Accessor methods (get/set functions) to struct members. */ + +/** Get the current line number. + * + */ +int yyget_lineno (void) +{ + + return yylineno; +} + +/** Get the input stream. + * + */ +FILE *yyget_in (void) +{ + return yyin; +} + +/** Get the output stream. + * + */ +FILE *yyget_out (void) +{ + return yyout; +} + +/** Get the length of the current token. + * + */ +yy_size_t yyget_leng (void) +{ + return yyleng; +} + +/** Get the current token. + * + */ + +char *yyget_text (void) +{ + return yytext; +} + +/** Set the current line number. + * @param line_number + * + */ +void yyset_lineno (int line_number ) +{ + + yylineno = line_number; +} + +/** Set the input stream. This does not discard the current + * input buffer. + * @param in_str A readable stream. + * + * @see yy_switch_to_buffer + */ +void yyset_in (FILE * in_str ) +{ + yyin = in_str ; +} + +void yyset_out (FILE * out_str ) +{ + yyout = out_str ; +} + +int yyget_debug (void) +{ + return yy_flex_debug; +} + +void yyset_debug (int bdebug ) +{ + yy_flex_debug = bdebug ; +} + +static int yy_init_globals (void) +{ + /* Initialization is the same as for the non-reentrant scanner. + * This function is called from yylex_destroy(), so don't allocate here. + */ + + (yy_buffer_stack) = 0; + (yy_buffer_stack_top) = 0; + (yy_buffer_stack_max) = 0; + (yy_c_buf_p) = (char *) 0; + (yy_init) = 0; + (yy_start) = 0; + +/* Defined in main.c */ +#ifdef YY_STDINIT + yyin = stdin; + yyout = stdout; +#else + yyin = (FILE *) 0; + yyout = (FILE *) 0; +#endif + + /* For future reference: Set errno on error, since we are called by + * yylex_init() + */ + return 0; +} + +/* yylex_destroy is for both reentrant and non-reentrant scanners. */ +int yylex_destroy (void) +{ + + /* Pop the buffer stack, destroying each element. */ + while(YY_CURRENT_BUFFER){ + yy_delete_buffer(YY_CURRENT_BUFFER ); + YY_CURRENT_BUFFER_LVALUE = NULL; + yypop_buffer_state(); + } + + /* Destroy the stack itself. */ + yyfree((yy_buffer_stack) ); + (yy_buffer_stack) = NULL; + + /* Reset the globals. This is important in a non-reentrant scanner so the next time + * yylex() is called, initialization will occur. */ + yy_init_globals( ); + + return 0; +} + +/* + * Internal utility routines. + */ + +#ifndef yytext_ptr +static void yy_flex_strncpy (char* s1, yyconst char * s2, int n ) +{ + register int i; + for ( i = 0; i < n; ++i ) + s1[i] = s2[i]; +} +#endif + +#ifdef YY_NEED_STRLEN +static int yy_flex_strlen (yyconst char * s ) +{ + register int n; + for ( n = 0; s[n]; ++n ) + ; + + return n; +} +#endif + +void *yyalloc (yy_size_t size ) +{ + return (void *) malloc( size ); +} + +void *yyrealloc (void * ptr, yy_size_t size ) +{ + /* The cast to (char *) in the following accommodates both + * implementations that use char* generic pointers, and those + * that use void* generic pointers. It works with the latter + * because both ANSI C and C++ allow castless assignment from + * any pointer type to void*, and deal with argument conversions + * as though doing an assignment. + */ + return (void *) realloc( (char *) ptr, size ); +} + +void yyfree (void * ptr ) +{ + free( (char *) ptr ); /* see yyrealloc() for (char *) cast */ +} + +#define YYTABLES_NAME "yytables" + +#line 444 "./util/configlexer.lex" + + + diff --git a/external/unbound/util/configlexer.lex b/external/unbound/util/configlexer.lex new file mode 100644 index 000000000..7ee7b9bd9 --- /dev/null +++ b/external/unbound/util/configlexer.lex @@ -0,0 +1,444 @@ +%{ +/* + * configlexer.lex - lexical analyzer for unbound config file + * + * Copyright (c) 2001-2006, NLnet Labs. All rights reserved + * + * See LICENSE for the license. + * + */ +#include <ctype.h> +#include <string.h> +#include <strings.h> +#ifdef HAVE_GLOB_H +# include <glob.h> +#endif + +#include "util/config_file.h" +#include "util/configparser.h" +void ub_c_error(const char *message); + +#if 0 +#define LEXOUT(s) printf s /* used ONLY when debugging */ +#else +#define LEXOUT(s) +#endif + +/** avoid warning in about fwrite return value */ +#define ECHO ub_c_error_msg("syntax error at text: %s", yytext) + +/** A parser variable, this is a statement in the config file which is + * of the form variable: value1 value2 ... nargs is the number of values. */ +#define YDVAR(nargs, var) \ + num_args=(nargs); \ + LEXOUT(("v(%s%d) ", yytext, num_args)); \ + if(num_args > 0) { BEGIN(val); } \ + return (var); + +struct inc_state { + char* filename; + int line; + YY_BUFFER_STATE buffer; + struct inc_state* next; +}; +static struct inc_state* config_include_stack = NULL; +static int inc_depth = 0; +static int inc_prev = 0; +static int num_args = 0; + +void init_cfg_parse(void) +{ + config_include_stack = NULL; + inc_depth = 0; + inc_prev = 0; + num_args = 0; +} + +static void config_start_include(const char* filename) +{ + FILE *input; + struct inc_state* s; + char* nm; + if(inc_depth++ > 100000) { + ub_c_error_msg("too many include files"); + return; + } + if(strlen(filename) == 0) { + ub_c_error_msg("empty include file name"); + return; + } + s = (struct inc_state*)malloc(sizeof(*s)); + if(!s) { + ub_c_error_msg("include %s: malloc failure", filename); + return; + } + if(cfg_parser->chroot && strncmp(filename, cfg_parser->chroot, + strlen(cfg_parser->chroot)) == 0) { + filename += strlen(cfg_parser->chroot); + } + nm = strdup(filename); + if(!nm) { + ub_c_error_msg("include %s: strdup failure", filename); + free(s); + return; + } + input = fopen(filename, "r"); + if(!input) { + ub_c_error_msg("cannot open include file '%s': %s", + filename, strerror(errno)); + free(s); + free(nm); + return; + } + LEXOUT(("switch_to_include_file(%s)\n", filename)); + s->filename = cfg_parser->filename; + s->line = cfg_parser->line; + s->buffer = YY_CURRENT_BUFFER; + s->next = config_include_stack; + config_include_stack = s; + cfg_parser->filename = nm; + cfg_parser->line = 1; + yy_switch_to_buffer(yy_create_buffer(input, YY_BUF_SIZE)); +} + +static void config_start_include_glob(const char* filename) +{ + + /* check for wildcards */ +#ifdef HAVE_GLOB + glob_t g; + size_t i; + int r, flags; + if(!(!strchr(filename, '*') && !strchr(filename, '?') && !strchr(filename, '[') && + !strchr(filename, '{') && !strchr(filename, '~'))) { + flags = 0 +#ifdef GLOB_ERR + | GLOB_ERR +#endif +#ifdef GLOB_NOSORT + | GLOB_NOSORT +#endif +#ifdef GLOB_BRACE + | GLOB_BRACE +#endif +#ifdef GLOB_TILDE + | GLOB_TILDE +#endif + ; + memset(&g, 0, sizeof(g)); + r = glob(filename, flags, NULL, &g); + if(r) { + /* some error */ + globfree(&g); + if(r == GLOB_NOMATCH) + return; /* no matches for pattern */ + config_start_include(filename); /* let original deal with it */ + return; + } + /* process files found, if any */ + for(i=0; i<(size_t)g.gl_pathc; i++) { + config_start_include(g.gl_pathv[i]); + } + globfree(&g); + return; + } +#endif /* HAVE_GLOB */ + + config_start_include(filename); +} + +static void config_end_include(void) +{ + struct inc_state* s = config_include_stack; + --inc_depth; + if(!s) return; + free(cfg_parser->filename); + cfg_parser->filename = s->filename; + cfg_parser->line = s->line; + yy_delete_buffer(YY_CURRENT_BUFFER); + yy_switch_to_buffer(s->buffer); + config_include_stack = s->next; + free(s); +} + +#ifndef yy_set_bol /* compat definition, for flex 2.4.6 */ +#define yy_set_bol(at_bol) \ + { \ + if ( ! yy_current_buffer ) \ + yy_current_buffer = yy_create_buffer( yyin, YY_BUF_SIZE ); \ + yy_current_buffer->yy_ch_buf[0] = ((at_bol)?'\n':' '); \ + } +#endif + +%} +%option noinput +%option nounput +%{ +#ifndef YY_NO_UNPUT +#define YY_NO_UNPUT 1 +#endif +#ifndef YY_NO_INPUT +#define YY_NO_INPUT 1 +#endif +%} + +SPACE [ \t] +LETTER [a-zA-Z] +UNQUOTEDLETTER [^\'\"\n\r \t\\]|\\. +UNQUOTEDLETTER_NOCOLON [^\:\'\"\n\r \t\\]|\\. +NEWLINE [\r\n] +COMMENT \# +COLON \: +DQANY [^\"\n\r\\]|\\. +SQANY [^\'\n\r\\]|\\. + +%x quotedstring singlequotedstr include include_quoted val + +%% +<INITIAL,val>{SPACE}* { + LEXOUT(("SP ")); /* ignore */ } +<INITIAL,val>{SPACE}*{COMMENT}.* { + /* note that flex makes the longest match and '.' is any but not nl */ + LEXOUT(("comment(%s) ", yytext)); /* ignore */ } +server{COLON} { YDVAR(0, VAR_SERVER) } +num-threads{COLON} { YDVAR(1, VAR_NUM_THREADS) } +verbosity{COLON} { YDVAR(1, VAR_VERBOSITY) } +port{COLON} { YDVAR(1, VAR_PORT) } +outgoing-range{COLON} { YDVAR(1, VAR_OUTGOING_RANGE) } +outgoing-port-permit{COLON} { YDVAR(1, VAR_OUTGOING_PORT_PERMIT) } +outgoing-port-avoid{COLON} { YDVAR(1, VAR_OUTGOING_PORT_AVOID) } +outgoing-num-tcp{COLON} { YDVAR(1, VAR_OUTGOING_NUM_TCP) } +incoming-num-tcp{COLON} { YDVAR(1, VAR_INCOMING_NUM_TCP) } +do-ip4{COLON} { YDVAR(1, VAR_DO_IP4) } +do-ip6{COLON} { YDVAR(1, VAR_DO_IP6) } +do-udp{COLON} { YDVAR(1, VAR_DO_UDP) } +do-tcp{COLON} { YDVAR(1, VAR_DO_TCP) } +tcp-upstream{COLON} { YDVAR(1, VAR_TCP_UPSTREAM) } +ssl-upstream{COLON} { YDVAR(1, VAR_SSL_UPSTREAM) } +ssl-service-key{COLON} { YDVAR(1, VAR_SSL_SERVICE_KEY) } +ssl-service-pem{COLON} { YDVAR(1, VAR_SSL_SERVICE_PEM) } +ssl-port{COLON} { YDVAR(1, VAR_SSL_PORT) } +do-daemonize{COLON} { YDVAR(1, VAR_DO_DAEMONIZE) } +interface{COLON} { YDVAR(1, VAR_INTERFACE) } +ip-address{COLON} { YDVAR(1, VAR_INTERFACE) } +outgoing-interface{COLON} { YDVAR(1, VAR_OUTGOING_INTERFACE) } +interface-automatic{COLON} { YDVAR(1, VAR_INTERFACE_AUTOMATIC) } +so-rcvbuf{COLON} { YDVAR(1, VAR_SO_RCVBUF) } +so-sndbuf{COLON} { YDVAR(1, VAR_SO_SNDBUF) } +so-reuseport{COLON} { YDVAR(1, VAR_SO_REUSEPORT) } +chroot{COLON} { YDVAR(1, VAR_CHROOT) } +username{COLON} { YDVAR(1, VAR_USERNAME) } +directory{COLON} { YDVAR(1, VAR_DIRECTORY) } +logfile{COLON} { YDVAR(1, VAR_LOGFILE) } +pidfile{COLON} { YDVAR(1, VAR_PIDFILE) } +root-hints{COLON} { YDVAR(1, VAR_ROOT_HINTS) } +edns-buffer-size{COLON} { YDVAR(1, VAR_EDNS_BUFFER_SIZE) } +msg-buffer-size{COLON} { YDVAR(1, VAR_MSG_BUFFER_SIZE) } +msg-cache-size{COLON} { YDVAR(1, VAR_MSG_CACHE_SIZE) } +msg-cache-slabs{COLON} { YDVAR(1, VAR_MSG_CACHE_SLABS) } +rrset-cache-size{COLON} { YDVAR(1, VAR_RRSET_CACHE_SIZE) } +rrset-cache-slabs{COLON} { YDVAR(1, VAR_RRSET_CACHE_SLABS) } +cache-max-ttl{COLON} { YDVAR(1, VAR_CACHE_MAX_TTL) } +cache-min-ttl{COLON} { YDVAR(1, VAR_CACHE_MIN_TTL) } +infra-host-ttl{COLON} { YDVAR(1, VAR_INFRA_HOST_TTL) } +infra-lame-ttl{COLON} { YDVAR(1, VAR_INFRA_LAME_TTL) } +infra-cache-slabs{COLON} { YDVAR(1, VAR_INFRA_CACHE_SLABS) } +infra-cache-numhosts{COLON} { YDVAR(1, VAR_INFRA_CACHE_NUMHOSTS) } +infra-cache-lame-size{COLON} { YDVAR(1, VAR_INFRA_CACHE_LAME_SIZE) } +num-queries-per-thread{COLON} { YDVAR(1, VAR_NUM_QUERIES_PER_THREAD) } +jostle-timeout{COLON} { YDVAR(1, VAR_JOSTLE_TIMEOUT) } +delay-close{COLON} { YDVAR(1, VAR_DELAY_CLOSE) } +target-fetch-policy{COLON} { YDVAR(1, VAR_TARGET_FETCH_POLICY) } +harden-short-bufsize{COLON} { YDVAR(1, VAR_HARDEN_SHORT_BUFSIZE) } +harden-large-queries{COLON} { YDVAR(1, VAR_HARDEN_LARGE_QUERIES) } +harden-glue{COLON} { YDVAR(1, VAR_HARDEN_GLUE) } +harden-dnssec-stripped{COLON} { YDVAR(1, VAR_HARDEN_DNSSEC_STRIPPED) } +harden-below-nxdomain{COLON} { YDVAR(1, VAR_HARDEN_BELOW_NXDOMAIN) } +harden-referral-path{COLON} { YDVAR(1, VAR_HARDEN_REFERRAL_PATH) } +use-caps-for-id{COLON} { YDVAR(1, VAR_USE_CAPS_FOR_ID) } +unwanted-reply-threshold{COLON} { YDVAR(1, VAR_UNWANTED_REPLY_THRESHOLD) } +private-address{COLON} { YDVAR(1, VAR_PRIVATE_ADDRESS) } +private-domain{COLON} { YDVAR(1, VAR_PRIVATE_DOMAIN) } +prefetch-key{COLON} { YDVAR(1, VAR_PREFETCH_KEY) } +prefetch{COLON} { YDVAR(1, VAR_PREFETCH) } +stub-zone{COLON} { YDVAR(0, VAR_STUB_ZONE) } +name{COLON} { YDVAR(1, VAR_NAME) } +stub-addr{COLON} { YDVAR(1, VAR_STUB_ADDR) } +stub-host{COLON} { YDVAR(1, VAR_STUB_HOST) } +stub-prime{COLON} { YDVAR(1, VAR_STUB_PRIME) } +stub-first{COLON} { YDVAR(1, VAR_STUB_FIRST) } +forward-zone{COLON} { YDVAR(0, VAR_FORWARD_ZONE) } +forward-addr{COLON} { YDVAR(1, VAR_FORWARD_ADDR) } +forward-host{COLON} { YDVAR(1, VAR_FORWARD_HOST) } +forward-first{COLON} { YDVAR(1, VAR_FORWARD_FIRST) } +do-not-query-address{COLON} { YDVAR(1, VAR_DO_NOT_QUERY_ADDRESS) } +do-not-query-localhost{COLON} { YDVAR(1, VAR_DO_NOT_QUERY_LOCALHOST) } +access-control{COLON} { YDVAR(2, VAR_ACCESS_CONTROL) } +hide-identity{COLON} { YDVAR(1, VAR_HIDE_IDENTITY) } +hide-version{COLON} { YDVAR(1, VAR_HIDE_VERSION) } +identity{COLON} { YDVAR(1, VAR_IDENTITY) } +version{COLON} { YDVAR(1, VAR_VERSION) } +module-config{COLON} { YDVAR(1, VAR_MODULE_CONF) } +dlv-anchor{COLON} { YDVAR(1, VAR_DLV_ANCHOR) } +dlv-anchor-file{COLON} { YDVAR(1, VAR_DLV_ANCHOR_FILE) } +trust-anchor-file{COLON} { YDVAR(1, VAR_TRUST_ANCHOR_FILE) } +auto-trust-anchor-file{COLON} { YDVAR(1, VAR_AUTO_TRUST_ANCHOR_FILE) } +trusted-keys-file{COLON} { YDVAR(1, VAR_TRUSTED_KEYS_FILE) } +trust-anchor{COLON} { YDVAR(1, VAR_TRUST_ANCHOR) } +val-override-date{COLON} { YDVAR(1, VAR_VAL_OVERRIDE_DATE) } +val-sig-skew-min{COLON} { YDVAR(1, VAR_VAL_SIG_SKEW_MIN) } +val-sig-skew-max{COLON} { YDVAR(1, VAR_VAL_SIG_SKEW_MAX) } +val-bogus-ttl{COLON} { YDVAR(1, VAR_BOGUS_TTL) } +val-clean-additional{COLON} { YDVAR(1, VAR_VAL_CLEAN_ADDITIONAL) } +val-permissive-mode{COLON} { YDVAR(1, VAR_VAL_PERMISSIVE_MODE) } +ignore-cd-flag{COLON} { YDVAR(1, VAR_IGNORE_CD_FLAG) } +val-log-level{COLON} { YDVAR(1, VAR_VAL_LOG_LEVEL) } +key-cache-size{COLON} { YDVAR(1, VAR_KEY_CACHE_SIZE) } +key-cache-slabs{COLON} { YDVAR(1, VAR_KEY_CACHE_SLABS) } +neg-cache-size{COLON} { YDVAR(1, VAR_NEG_CACHE_SIZE) } +val-nsec3-keysize-iterations{COLON} { + YDVAR(1, VAR_VAL_NSEC3_KEYSIZE_ITERATIONS) } +add-holddown{COLON} { YDVAR(1, VAR_ADD_HOLDDOWN) } +del-holddown{COLON} { YDVAR(1, VAR_DEL_HOLDDOWN) } +keep-missing{COLON} { YDVAR(1, VAR_KEEP_MISSING) } +use-syslog{COLON} { YDVAR(1, VAR_USE_SYSLOG) } +log-time-ascii{COLON} { YDVAR(1, VAR_LOG_TIME_ASCII) } +log-queries{COLON} { YDVAR(1, VAR_LOG_QUERIES) } +local-zone{COLON} { YDVAR(2, VAR_LOCAL_ZONE) } +local-data{COLON} { YDVAR(1, VAR_LOCAL_DATA) } +local-data-ptr{COLON} { YDVAR(1, VAR_LOCAL_DATA_PTR) } +unblock-lan-zones{COLON} { YDVAR(1, VAR_UNBLOCK_LAN_ZONES) } +statistics-interval{COLON} { YDVAR(1, VAR_STATISTICS_INTERVAL) } +statistics-cumulative{COLON} { YDVAR(1, VAR_STATISTICS_CUMULATIVE) } +extended-statistics{COLON} { YDVAR(1, VAR_EXTENDED_STATISTICS) } +remote-control{COLON} { YDVAR(0, VAR_REMOTE_CONTROL) } +control-enable{COLON} { YDVAR(1, VAR_CONTROL_ENABLE) } +control-interface{COLON} { YDVAR(1, VAR_CONTROL_INTERFACE) } +control-port{COLON} { YDVAR(1, VAR_CONTROL_PORT) } +server-key-file{COLON} { YDVAR(1, VAR_SERVER_KEY_FILE) } +server-cert-file{COLON} { YDVAR(1, VAR_SERVER_CERT_FILE) } +control-key-file{COLON} { YDVAR(1, VAR_CONTROL_KEY_FILE) } +control-cert-file{COLON} { YDVAR(1, VAR_CONTROL_CERT_FILE) } +python-script{COLON} { YDVAR(1, VAR_PYTHON_SCRIPT) } +python{COLON} { YDVAR(0, VAR_PYTHON) } +domain-insecure{COLON} { YDVAR(1, VAR_DOMAIN_INSECURE) } +minimal-responses{COLON} { YDVAR(1, VAR_MINIMAL_RESPONSES) } +rrset-roundrobin{COLON} { YDVAR(1, VAR_RRSET_ROUNDROBIN) } +max-udp-size{COLON} { YDVAR(1, VAR_MAX_UDP_SIZE) } +dns64-prefix{COLON} { YDVAR(1, VAR_DNS64_PREFIX) } +dns64-synthall{COLON} { YDVAR(1, VAR_DNS64_SYNTHALL) } +dnstap{COLON} { YDVAR(0, VAR_DNSTAP) } +dnstap-enable{COLON} { YDVAR(1, VAR_DNSTAP_ENABLE) } +dnstap-socket-path{COLON} { YDVAR(1, VAR_DNSTAP_SOCKET_PATH) } +dnstap-send-identity{COLON} { YDVAR(1, VAR_DNSTAP_SEND_IDENTITY) } +dnstap-send-version{COLON} { YDVAR(1, VAR_DNSTAP_SEND_VERSION) } +dnstap-identity{COLON} { YDVAR(1, VAR_DNSTAP_IDENTITY) } +dnstap-version{COLON} { YDVAR(1, VAR_DNSTAP_VERSION) } +dnstap-log-resolver-query-messages{COLON} { + YDVAR(1, VAR_DNSTAP_LOG_RESOLVER_QUERY_MESSAGES) } +dnstap-log-resolver-response-messages{COLON} { + YDVAR(1, VAR_DNSTAP_LOG_RESOLVER_RESPONSE_MESSAGES) } +dnstap-log-client-query-messages{COLON} { + YDVAR(1, VAR_DNSTAP_LOG_CLIENT_QUERY_MESSAGES) } +dnstap-log-client-response-messages{COLON} { + YDVAR(1, VAR_DNSTAP_LOG_CLIENT_RESPONSE_MESSAGES) } +dnstap-log-forwarder-query-messages{COLON} { + YDVAR(1, VAR_DNSTAP_LOG_FORWARDER_QUERY_MESSAGES) } +dnstap-log-forwarder-response-messages{COLON} { + YDVAR(1, VAR_DNSTAP_LOG_FORWARDER_RESPONSE_MESSAGES) } +<INITIAL,val>{NEWLINE} { LEXOUT(("NL\n")); cfg_parser->line++; } + + /* Quoted strings. Strip leading and ending quotes */ +<val>\" { BEGIN(quotedstring); LEXOUT(("QS ")); } +<quotedstring><<EOF>> { + yyerror("EOF inside quoted string"); + if(--num_args == 0) { BEGIN(INITIAL); } + else { BEGIN(val); } +} +<quotedstring>{DQANY}* { LEXOUT(("STR(%s) ", yytext)); yymore(); } +<quotedstring>{NEWLINE} { yyerror("newline inside quoted string, no end \""); + cfg_parser->line++; BEGIN(INITIAL); } +<quotedstring>\" { + LEXOUT(("QE ")); + if(--num_args == 0) { BEGIN(INITIAL); } + else { BEGIN(val); } + yytext[yyleng - 1] = '\0'; + yylval.str = strdup(yytext); + if(!yylval.str) + yyerror("out of memory"); + return STRING_ARG; +} + + /* Single Quoted strings. Strip leading and ending quotes */ +<val>\' { BEGIN(singlequotedstr); LEXOUT(("SQS ")); } +<singlequotedstr><<EOF>> { + yyerror("EOF inside quoted string"); + if(--num_args == 0) { BEGIN(INITIAL); } + else { BEGIN(val); } +} +<singlequotedstr>{SQANY}* { LEXOUT(("STR(%s) ", yytext)); yymore(); } +<singlequotedstr>{NEWLINE} { yyerror("newline inside quoted string, no end '"); + cfg_parser->line++; BEGIN(INITIAL); } +<singlequotedstr>\' { + LEXOUT(("SQE ")); + if(--num_args == 0) { BEGIN(INITIAL); } + else { BEGIN(val); } + yytext[yyleng - 1] = '\0'; + yylval.str = strdup(yytext); + if(!yylval.str) + yyerror("out of memory"); + return STRING_ARG; +} + + /* include: directive */ +<INITIAL,val>include{COLON} { + LEXOUT(("v(%s) ", yytext)); inc_prev = YYSTATE; BEGIN(include); } +<include><<EOF>> { + yyerror("EOF inside include directive"); + BEGIN(inc_prev); +} +<include>{SPACE}* { LEXOUT(("ISP ")); /* ignore */ } +<include>{NEWLINE} { LEXOUT(("NL\n")); cfg_parser->line++;} +<include>\" { LEXOUT(("IQS ")); BEGIN(include_quoted); } +<include>{UNQUOTEDLETTER}* { + LEXOUT(("Iunquotedstr(%s) ", yytext)); + config_start_include_glob(yytext); + BEGIN(inc_prev); +} +<include_quoted><<EOF>> { + yyerror("EOF inside quoted string"); + BEGIN(inc_prev); +} +<include_quoted>{DQANY}* { LEXOUT(("ISTR(%s) ", yytext)); yymore(); } +<include_quoted>{NEWLINE} { yyerror("newline before \" in include name"); + cfg_parser->line++; BEGIN(inc_prev); } +<include_quoted>\" { + LEXOUT(("IQE ")); + yytext[yyleng - 1] = '\0'; + config_start_include_glob(yytext); + BEGIN(inc_prev); +} +<INITIAL,val><<EOF>> { + LEXOUT(("LEXEOF ")); + yy_set_bol(1); /* Set beginning of line, so "^" rules match. */ + if (!config_include_stack) { + yyterminate(); + } else { + fclose(yyin); + config_end_include(); + } +} + +<val>{UNQUOTEDLETTER}* { LEXOUT(("unquotedstr(%s) ", yytext)); + if(--num_args == 0) { BEGIN(INITIAL); } + yylval.str = strdup(yytext); return STRING_ARG; } + +{UNQUOTEDLETTER_NOCOLON}* { + ub_c_error_msg("unknown keyword '%s'", yytext); + } + +<*>. { + ub_c_error_msg("stray '%s'", yytext); + } + +%% diff --git a/external/unbound/util/configparser.c b/external/unbound/util/configparser.c new file mode 100644 index 000000000..089d675d9 --- /dev/null +++ b/external/unbound/util/configparser.c @@ -0,0 +1,4109 @@ +/* A Bison parser, made by GNU Bison 2.6.1. */ + +/* Bison implementation for Yacc-like parsers in C + + Copyright (C) 1984, 1989-1990, 2000-2012 Free Software Foundation, Inc. + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. */ + +/* As a special exception, you may create a larger work that contains + part or all of the Bison parser skeleton and distribute that work + under terms of your choice, so long as that work isn't itself a + parser generator using the skeleton or a modified version thereof + as a parser skeleton. Alternatively, if you modify or redistribute + the parser skeleton itself, you may (at your option) remove this + special exception, which will cause the skeleton and the resulting + Bison output files to be licensed under the GNU General Public + License without this special exception. + + This special exception was added by the Free Software Foundation in + version 2.2 of Bison. */ + +/* C LALR(1) parser skeleton written by Richard Stallman, by + simplifying the original so-called "semantic" parser. */ + +/* All symbols defined below should begin with yy or YY, to avoid + infringing on user name space. This should be done even for local + variables, as they might otherwise be expanded by user macros. + There are some unavoidable exceptions within include files to + define necessary library symbols; they are noted "INFRINGES ON + USER NAME SPACE" below. */ + +/* Identify Bison output. */ +#define YYBISON 1 + +/* Bison version. */ +#define YYBISON_VERSION "2.6.1" + +/* Skeleton name. */ +#define YYSKELETON_NAME "yacc.c" + +/* Pure parsers. */ +#define YYPURE 0 + +/* Push parsers. */ +#define YYPUSH 0 + +/* Pull parsers. */ +#define YYPULL 1 + + + + +/* Copy the first part of user declarations. */ +/* Line 336 of yacc.c */ +#line 38 "./util/configparser.y" + +#include "config.h" + +#include <stdarg.h> +#include <stdio.h> +#include <string.h> +#include <stdlib.h> +#include <assert.h> + +#include "util/configyyrename.h" +#include "util/config_file.h" +#include "util/net_help.h" + +int ub_c_lex(void); +void ub_c_error(const char *message); + +/* these need to be global, otherwise they cannot be used inside yacc */ +extern struct config_parser_state* cfg_parser; + +#if 0 +#define OUTYY(s) printf s /* used ONLY when debugging */ +#else +#define OUTYY(s) +#endif + + +/* Line 336 of yacc.c */ +#line 95 "util/configparser.c" + +# ifndef YY_NULL +# if defined __cplusplus && 201103L <= __cplusplus +# define YY_NULL nullptr +# else +# define YY_NULL 0 +# endif +# endif + +/* Enabling verbose error messages. */ +#ifdef YYERROR_VERBOSE +# undef YYERROR_VERBOSE +# define YYERROR_VERBOSE 1 +#else +# define YYERROR_VERBOSE 0 +#endif + +/* In a future release of Bison, this section will be replaced + by #include "configparser.h". */ +#ifndef YY_UTIL_CONFIGPARSER_H +# define YY_UTIL_CONFIGPARSER_H +/* Enabling traces. */ +#ifndef YYDEBUG +# define YYDEBUG 0 +#endif +#if YYDEBUG +extern int yydebug; +#endif + +/* Tokens. */ +#ifndef YYTOKENTYPE +# define YYTOKENTYPE + /* Put the tokens into the symbol table, so that GDB and other debuggers + know about them. */ + enum yytokentype { + SPACE = 258, + LETTER = 259, + NEWLINE = 260, + COMMENT = 261, + COLON = 262, + ANY = 263, + ZONESTR = 264, + STRING_ARG = 265, + VAR_SERVER = 266, + VAR_VERBOSITY = 267, + VAR_NUM_THREADS = 268, + VAR_PORT = 269, + VAR_OUTGOING_RANGE = 270, + VAR_INTERFACE = 271, + VAR_DO_IP4 = 272, + VAR_DO_IP6 = 273, + VAR_DO_UDP = 274, + VAR_DO_TCP = 275, + VAR_CHROOT = 276, + VAR_USERNAME = 277, + VAR_DIRECTORY = 278, + VAR_LOGFILE = 279, + VAR_PIDFILE = 280, + VAR_MSG_CACHE_SIZE = 281, + VAR_MSG_CACHE_SLABS = 282, + VAR_NUM_QUERIES_PER_THREAD = 283, + VAR_RRSET_CACHE_SIZE = 284, + VAR_RRSET_CACHE_SLABS = 285, + VAR_OUTGOING_NUM_TCP = 286, + VAR_INFRA_HOST_TTL = 287, + VAR_INFRA_LAME_TTL = 288, + VAR_INFRA_CACHE_SLABS = 289, + VAR_INFRA_CACHE_NUMHOSTS = 290, + VAR_INFRA_CACHE_LAME_SIZE = 291, + VAR_NAME = 292, + VAR_STUB_ZONE = 293, + VAR_STUB_HOST = 294, + VAR_STUB_ADDR = 295, + VAR_TARGET_FETCH_POLICY = 296, + VAR_HARDEN_SHORT_BUFSIZE = 297, + VAR_HARDEN_LARGE_QUERIES = 298, + VAR_FORWARD_ZONE = 299, + VAR_FORWARD_HOST = 300, + VAR_FORWARD_ADDR = 301, + VAR_DO_NOT_QUERY_ADDRESS = 302, + VAR_HIDE_IDENTITY = 303, + VAR_HIDE_VERSION = 304, + VAR_IDENTITY = 305, + VAR_VERSION = 306, + VAR_HARDEN_GLUE = 307, + VAR_MODULE_CONF = 308, + VAR_TRUST_ANCHOR_FILE = 309, + VAR_TRUST_ANCHOR = 310, + VAR_VAL_OVERRIDE_DATE = 311, + VAR_BOGUS_TTL = 312, + VAR_VAL_CLEAN_ADDITIONAL = 313, + VAR_VAL_PERMISSIVE_MODE = 314, + VAR_INCOMING_NUM_TCP = 315, + VAR_MSG_BUFFER_SIZE = 316, + VAR_KEY_CACHE_SIZE = 317, + VAR_KEY_CACHE_SLABS = 318, + VAR_TRUSTED_KEYS_FILE = 319, + VAR_VAL_NSEC3_KEYSIZE_ITERATIONS = 320, + VAR_USE_SYSLOG = 321, + VAR_OUTGOING_INTERFACE = 322, + VAR_ROOT_HINTS = 323, + VAR_DO_NOT_QUERY_LOCALHOST = 324, + VAR_CACHE_MAX_TTL = 325, + VAR_HARDEN_DNSSEC_STRIPPED = 326, + VAR_ACCESS_CONTROL = 327, + VAR_LOCAL_ZONE = 328, + VAR_LOCAL_DATA = 329, + VAR_INTERFACE_AUTOMATIC = 330, + VAR_STATISTICS_INTERVAL = 331, + VAR_DO_DAEMONIZE = 332, + VAR_USE_CAPS_FOR_ID = 333, + VAR_STATISTICS_CUMULATIVE = 334, + VAR_OUTGOING_PORT_PERMIT = 335, + VAR_OUTGOING_PORT_AVOID = 336, + VAR_DLV_ANCHOR_FILE = 337, + VAR_DLV_ANCHOR = 338, + VAR_NEG_CACHE_SIZE = 339, + VAR_HARDEN_REFERRAL_PATH = 340, + VAR_PRIVATE_ADDRESS = 341, + VAR_PRIVATE_DOMAIN = 342, + VAR_REMOTE_CONTROL = 343, + VAR_CONTROL_ENABLE = 344, + VAR_CONTROL_INTERFACE = 345, + VAR_CONTROL_PORT = 346, + VAR_SERVER_KEY_FILE = 347, + VAR_SERVER_CERT_FILE = 348, + VAR_CONTROL_KEY_FILE = 349, + VAR_CONTROL_CERT_FILE = 350, + VAR_EXTENDED_STATISTICS = 351, + VAR_LOCAL_DATA_PTR = 352, + VAR_JOSTLE_TIMEOUT = 353, + VAR_STUB_PRIME = 354, + VAR_UNWANTED_REPLY_THRESHOLD = 355, + VAR_LOG_TIME_ASCII = 356, + VAR_DOMAIN_INSECURE = 357, + VAR_PYTHON = 358, + VAR_PYTHON_SCRIPT = 359, + VAR_VAL_SIG_SKEW_MIN = 360, + VAR_VAL_SIG_SKEW_MAX = 361, + VAR_CACHE_MIN_TTL = 362, + VAR_VAL_LOG_LEVEL = 363, + VAR_AUTO_TRUST_ANCHOR_FILE = 364, + VAR_KEEP_MISSING = 365, + VAR_ADD_HOLDDOWN = 366, + VAR_DEL_HOLDDOWN = 367, + VAR_SO_RCVBUF = 368, + VAR_EDNS_BUFFER_SIZE = 369, + VAR_PREFETCH = 370, + VAR_PREFETCH_KEY = 371, + VAR_SO_SNDBUF = 372, + VAR_SO_REUSEPORT = 373, + VAR_HARDEN_BELOW_NXDOMAIN = 374, + VAR_IGNORE_CD_FLAG = 375, + VAR_LOG_QUERIES = 376, + VAR_TCP_UPSTREAM = 377, + VAR_SSL_UPSTREAM = 378, + VAR_SSL_SERVICE_KEY = 379, + VAR_SSL_SERVICE_PEM = 380, + VAR_SSL_PORT = 381, + VAR_FORWARD_FIRST = 382, + VAR_STUB_FIRST = 383, + VAR_MINIMAL_RESPONSES = 384, + VAR_RRSET_ROUNDROBIN = 385, + VAR_MAX_UDP_SIZE = 386, + VAR_DELAY_CLOSE = 387, + VAR_UNBLOCK_LAN_ZONES = 388, + VAR_DNS64_PREFIX = 389, + VAR_DNS64_SYNTHALL = 390, + VAR_DNSTAP = 391, + VAR_DNSTAP_ENABLE = 392, + VAR_DNSTAP_SOCKET_PATH = 393, + VAR_DNSTAP_SEND_IDENTITY = 394, + VAR_DNSTAP_SEND_VERSION = 395, + VAR_DNSTAP_IDENTITY = 396, + VAR_DNSTAP_VERSION = 397, + VAR_DNSTAP_LOG_RESOLVER_QUERY_MESSAGES = 398, + VAR_DNSTAP_LOG_RESOLVER_RESPONSE_MESSAGES = 399, + VAR_DNSTAP_LOG_CLIENT_QUERY_MESSAGES = 400, + VAR_DNSTAP_LOG_CLIENT_RESPONSE_MESSAGES = 401, + VAR_DNSTAP_LOG_FORWARDER_QUERY_MESSAGES = 402, + VAR_DNSTAP_LOG_FORWARDER_RESPONSE_MESSAGES = 403 + }; +#endif +/* Tokens. */ +#define SPACE 258 +#define LETTER 259 +#define NEWLINE 260 +#define COMMENT 261 +#define COLON 262 +#define ANY 263 +#define ZONESTR 264 +#define STRING_ARG 265 +#define VAR_SERVER 266 +#define VAR_VERBOSITY 267 +#define VAR_NUM_THREADS 268 +#define VAR_PORT 269 +#define VAR_OUTGOING_RANGE 270 +#define VAR_INTERFACE 271 +#define VAR_DO_IP4 272 +#define VAR_DO_IP6 273 +#define VAR_DO_UDP 274 +#define VAR_DO_TCP 275 +#define VAR_CHROOT 276 +#define VAR_USERNAME 277 +#define VAR_DIRECTORY 278 +#define VAR_LOGFILE 279 +#define VAR_PIDFILE 280 +#define VAR_MSG_CACHE_SIZE 281 +#define VAR_MSG_CACHE_SLABS 282 +#define VAR_NUM_QUERIES_PER_THREAD 283 +#define VAR_RRSET_CACHE_SIZE 284 +#define VAR_RRSET_CACHE_SLABS 285 +#define VAR_OUTGOING_NUM_TCP 286 +#define VAR_INFRA_HOST_TTL 287 +#define VAR_INFRA_LAME_TTL 288 +#define VAR_INFRA_CACHE_SLABS 289 +#define VAR_INFRA_CACHE_NUMHOSTS 290 +#define VAR_INFRA_CACHE_LAME_SIZE 291 +#define VAR_NAME 292 +#define VAR_STUB_ZONE 293 +#define VAR_STUB_HOST 294 +#define VAR_STUB_ADDR 295 +#define VAR_TARGET_FETCH_POLICY 296 +#define VAR_HARDEN_SHORT_BUFSIZE 297 +#define VAR_HARDEN_LARGE_QUERIES 298 +#define VAR_FORWARD_ZONE 299 +#define VAR_FORWARD_HOST 300 +#define VAR_FORWARD_ADDR 301 +#define VAR_DO_NOT_QUERY_ADDRESS 302 +#define VAR_HIDE_IDENTITY 303 +#define VAR_HIDE_VERSION 304 +#define VAR_IDENTITY 305 +#define VAR_VERSION 306 +#define VAR_HARDEN_GLUE 307 +#define VAR_MODULE_CONF 308 +#define VAR_TRUST_ANCHOR_FILE 309 +#define VAR_TRUST_ANCHOR 310 +#define VAR_VAL_OVERRIDE_DATE 311 +#define VAR_BOGUS_TTL 312 +#define VAR_VAL_CLEAN_ADDITIONAL 313 +#define VAR_VAL_PERMISSIVE_MODE 314 +#define VAR_INCOMING_NUM_TCP 315 +#define VAR_MSG_BUFFER_SIZE 316 +#define VAR_KEY_CACHE_SIZE 317 +#define VAR_KEY_CACHE_SLABS 318 +#define VAR_TRUSTED_KEYS_FILE 319 +#define VAR_VAL_NSEC3_KEYSIZE_ITERATIONS 320 +#define VAR_USE_SYSLOG 321 +#define VAR_OUTGOING_INTERFACE 322 +#define VAR_ROOT_HINTS 323 +#define VAR_DO_NOT_QUERY_LOCALHOST 324 +#define VAR_CACHE_MAX_TTL 325 +#define VAR_HARDEN_DNSSEC_STRIPPED 326 +#define VAR_ACCESS_CONTROL 327 +#define VAR_LOCAL_ZONE 328 +#define VAR_LOCAL_DATA 329 +#define VAR_INTERFACE_AUTOMATIC 330 +#define VAR_STATISTICS_INTERVAL 331 +#define VAR_DO_DAEMONIZE 332 +#define VAR_USE_CAPS_FOR_ID 333 +#define VAR_STATISTICS_CUMULATIVE 334 +#define VAR_OUTGOING_PORT_PERMIT 335 +#define VAR_OUTGOING_PORT_AVOID 336 +#define VAR_DLV_ANCHOR_FILE 337 +#define VAR_DLV_ANCHOR 338 +#define VAR_NEG_CACHE_SIZE 339 +#define VAR_HARDEN_REFERRAL_PATH 340 +#define VAR_PRIVATE_ADDRESS 341 +#define VAR_PRIVATE_DOMAIN 342 +#define VAR_REMOTE_CONTROL 343 +#define VAR_CONTROL_ENABLE 344 +#define VAR_CONTROL_INTERFACE 345 +#define VAR_CONTROL_PORT 346 +#define VAR_SERVER_KEY_FILE 347 +#define VAR_SERVER_CERT_FILE 348 +#define VAR_CONTROL_KEY_FILE 349 +#define VAR_CONTROL_CERT_FILE 350 +#define VAR_EXTENDED_STATISTICS 351 +#define VAR_LOCAL_DATA_PTR 352 +#define VAR_JOSTLE_TIMEOUT 353 +#define VAR_STUB_PRIME 354 +#define VAR_UNWANTED_REPLY_THRESHOLD 355 +#define VAR_LOG_TIME_ASCII 356 +#define VAR_DOMAIN_INSECURE 357 +#define VAR_PYTHON 358 +#define VAR_PYTHON_SCRIPT 359 +#define VAR_VAL_SIG_SKEW_MIN 360 +#define VAR_VAL_SIG_SKEW_MAX 361 +#define VAR_CACHE_MIN_TTL 362 +#define VAR_VAL_LOG_LEVEL 363 +#define VAR_AUTO_TRUST_ANCHOR_FILE 364 +#define VAR_KEEP_MISSING 365 +#define VAR_ADD_HOLDDOWN 366 +#define VAR_DEL_HOLDDOWN 367 +#define VAR_SO_RCVBUF 368 +#define VAR_EDNS_BUFFER_SIZE 369 +#define VAR_PREFETCH 370 +#define VAR_PREFETCH_KEY 371 +#define VAR_SO_SNDBUF 372 +#define VAR_SO_REUSEPORT 373 +#define VAR_HARDEN_BELOW_NXDOMAIN 374 +#define VAR_IGNORE_CD_FLAG 375 +#define VAR_LOG_QUERIES 376 +#define VAR_TCP_UPSTREAM 377 +#define VAR_SSL_UPSTREAM 378 +#define VAR_SSL_SERVICE_KEY 379 +#define VAR_SSL_SERVICE_PEM 380 +#define VAR_SSL_PORT 381 +#define VAR_FORWARD_FIRST 382 +#define VAR_STUB_FIRST 383 +#define VAR_MINIMAL_RESPONSES 384 +#define VAR_RRSET_ROUNDROBIN 385 +#define VAR_MAX_UDP_SIZE 386 +#define VAR_DELAY_CLOSE 387 +#define VAR_UNBLOCK_LAN_ZONES 388 +#define VAR_DNS64_PREFIX 389 +#define VAR_DNS64_SYNTHALL 390 +#define VAR_DNSTAP 391 +#define VAR_DNSTAP_ENABLE 392 +#define VAR_DNSTAP_SOCKET_PATH 393 +#define VAR_DNSTAP_SEND_IDENTITY 394 +#define VAR_DNSTAP_SEND_VERSION 395 +#define VAR_DNSTAP_IDENTITY 396 +#define VAR_DNSTAP_VERSION 397 +#define VAR_DNSTAP_LOG_RESOLVER_QUERY_MESSAGES 398 +#define VAR_DNSTAP_LOG_RESOLVER_RESPONSE_MESSAGES 399 +#define VAR_DNSTAP_LOG_CLIENT_QUERY_MESSAGES 400 +#define VAR_DNSTAP_LOG_CLIENT_RESPONSE_MESSAGES 401 +#define VAR_DNSTAP_LOG_FORWARDER_QUERY_MESSAGES 402 +#define VAR_DNSTAP_LOG_FORWARDER_RESPONSE_MESSAGES 403 + + + +#if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED +typedef union YYSTYPE +{ +/* Line 350 of yacc.c */ +#line 64 "./util/configparser.y" + + char* str; + + +/* Line 350 of yacc.c */ +#line 439 "util/configparser.c" +} YYSTYPE; +# define YYSTYPE_IS_TRIVIAL 1 +# define yystype YYSTYPE /* obsolescent; will be withdrawn */ +# define YYSTYPE_IS_DECLARED 1 +#endif + +extern YYSTYPE yylval; + +#ifdef YYPARSE_PARAM +#if defined __STDC__ || defined __cplusplus +int yyparse (void *YYPARSE_PARAM); +#else +int yyparse (); +#endif +#else /* ! YYPARSE_PARAM */ +#if defined __STDC__ || defined __cplusplus +int yyparse (void); +#else +int yyparse (); +#endif +#endif /* ! YYPARSE_PARAM */ + +#endif /* !YY_UTIL_CONFIGPARSER_H */ + +/* Copy the second part of user declarations. */ + +/* Line 353 of yacc.c */ +#line 467 "util/configparser.c" + +#ifdef short +# undef short +#endif + +#ifdef YYTYPE_UINT8 +typedef YYTYPE_UINT8 yytype_uint8; +#else +typedef unsigned char yytype_uint8; +#endif + +#ifdef YYTYPE_INT8 +typedef YYTYPE_INT8 yytype_int8; +#elif (defined __STDC__ || defined __C99__FUNC__ \ + || defined __cplusplus || defined _MSC_VER) +typedef signed char yytype_int8; +#else +typedef short int yytype_int8; +#endif + +#ifdef YYTYPE_UINT16 +typedef YYTYPE_UINT16 yytype_uint16; +#else +typedef unsigned short int yytype_uint16; +#endif + +#ifdef YYTYPE_INT16 +typedef YYTYPE_INT16 yytype_int16; +#else +typedef short int yytype_int16; +#endif + +#ifndef YYSIZE_T +# ifdef __SIZE_TYPE__ +# define YYSIZE_T __SIZE_TYPE__ +# elif defined size_t +# define YYSIZE_T size_t +# elif ! defined YYSIZE_T && (defined __STDC__ || defined __C99__FUNC__ \ + || defined __cplusplus || defined _MSC_VER) +# include <stddef.h> /* INFRINGES ON USER NAME SPACE */ +# define YYSIZE_T size_t +# else +# define YYSIZE_T unsigned int +# endif +#endif + +#define YYSIZE_MAXIMUM ((YYSIZE_T) -1) + +#ifndef YY_ +# if defined YYENABLE_NLS && YYENABLE_NLS +# if ENABLE_NLS +# include <libintl.h> /* INFRINGES ON USER NAME SPACE */ +# define YY_(msgid) dgettext ("bison-runtime", msgid) +# endif +# endif +# ifndef YY_ +# define YY_(msgid) msgid +# endif +#endif + +/* Suppress unused-variable warnings by "using" E. */ +#if ! defined lint || defined __GNUC__ +# define YYUSE(e) ((void) (e)) +#else +# define YYUSE(e) /* empty */ +#endif + +/* Identity function, used to suppress warnings about constant conditions. */ +#ifndef lint +# define YYID(n) (n) +#else +#if (defined __STDC__ || defined __C99__FUNC__ \ + || defined __cplusplus || defined _MSC_VER) +static int +YYID (int yyi) +#else +static int +YYID (yyi) + int yyi; +#endif +{ + return yyi; +} +#endif + +#if ! defined yyoverflow || YYERROR_VERBOSE + +/* The parser invokes alloca or malloc; define the necessary symbols. */ + +# ifdef YYSTACK_USE_ALLOCA +# if YYSTACK_USE_ALLOCA +# ifdef __GNUC__ +# define YYSTACK_ALLOC __builtin_alloca +# elif defined __BUILTIN_VA_ARG_INCR +# include <alloca.h> /* INFRINGES ON USER NAME SPACE */ +# elif defined _AIX +# define YYSTACK_ALLOC __alloca +# elif defined _MSC_VER +# include <malloc.h> /* INFRINGES ON USER NAME SPACE */ +# define alloca _alloca +# else +# define YYSTACK_ALLOC alloca +# if ! defined _ALLOCA_H && ! defined EXIT_SUCCESS && (defined __STDC__ || defined __C99__FUNC__ \ + || defined __cplusplus || defined _MSC_VER) +# include <stdlib.h> /* INFRINGES ON USER NAME SPACE */ + /* Use EXIT_SUCCESS as a witness for stdlib.h. */ +# ifndef EXIT_SUCCESS +# define EXIT_SUCCESS 0 +# endif +# endif +# endif +# endif +# endif + +# ifdef YYSTACK_ALLOC + /* Pacify GCC's `empty if-body' warning. */ +# define YYSTACK_FREE(Ptr) do { /* empty */; } while (YYID (0)) +# ifndef YYSTACK_ALLOC_MAXIMUM + /* The OS might guarantee only one guard page at the bottom of the stack, + and a page size can be as small as 4096 bytes. So we cannot safely + invoke alloca (N) if N exceeds 4096. Use a slightly smaller number + to allow for a few compiler-allocated temporary stack slots. */ +# define YYSTACK_ALLOC_MAXIMUM 4032 /* reasonable circa 2006 */ +# endif +# else +# define YYSTACK_ALLOC YYMALLOC +# define YYSTACK_FREE YYFREE +# ifndef YYSTACK_ALLOC_MAXIMUM +# define YYSTACK_ALLOC_MAXIMUM YYSIZE_MAXIMUM +# endif +# if (defined __cplusplus && ! defined EXIT_SUCCESS \ + && ! ((defined YYMALLOC || defined malloc) \ + && (defined YYFREE || defined free))) +# include <stdlib.h> /* INFRINGES ON USER NAME SPACE */ +# ifndef EXIT_SUCCESS +# define EXIT_SUCCESS 0 +# endif +# endif +# ifndef YYMALLOC +# define YYMALLOC malloc +# if ! defined malloc && ! defined EXIT_SUCCESS && (defined __STDC__ || defined __C99__FUNC__ \ + || defined __cplusplus || defined _MSC_VER) +void *malloc (YYSIZE_T); /* INFRINGES ON USER NAME SPACE */ +# endif +# endif +# ifndef YYFREE +# define YYFREE free +# if ! defined free && ! defined EXIT_SUCCESS && (defined __STDC__ || defined __C99__FUNC__ \ + || defined __cplusplus || defined _MSC_VER) +void free (void *); /* INFRINGES ON USER NAME SPACE */ +# endif +# endif +# endif +#endif /* ! defined yyoverflow || YYERROR_VERBOSE */ + + +#if (! defined yyoverflow \ + && (! defined __cplusplus \ + || (defined YYSTYPE_IS_TRIVIAL && YYSTYPE_IS_TRIVIAL))) + +/* A type that is properly aligned for any stack member. */ +union yyalloc +{ + yytype_int16 yyss_alloc; + YYSTYPE yyvs_alloc; +}; + +/* The size of the maximum gap between one aligned stack and the next. */ +# define YYSTACK_GAP_MAXIMUM (sizeof (union yyalloc) - 1) + +/* The size of an array large to enough to hold all stacks, each with + N elements. */ +# define YYSTACK_BYTES(N) \ + ((N) * (sizeof (yytype_int16) + sizeof (YYSTYPE)) \ + + YYSTACK_GAP_MAXIMUM) + +# define YYCOPY_NEEDED 1 + +/* Relocate STACK from its old location to the new one. The + local variables YYSIZE and YYSTACKSIZE give the old and new number of + elements in the stack, and YYPTR gives the new location of the + stack. Advance YYPTR to a properly aligned location for the next + stack. */ +# define YYSTACK_RELOCATE(Stack_alloc, Stack) \ + do \ + { \ + YYSIZE_T yynewbytes; \ + YYCOPY (&yyptr->Stack_alloc, Stack, yysize); \ + Stack = &yyptr->Stack_alloc; \ + yynewbytes = yystacksize * sizeof (*Stack) + YYSTACK_GAP_MAXIMUM; \ + yyptr += yynewbytes / sizeof (*yyptr); \ + } \ + while (YYID (0)) + +#endif + +#if defined YYCOPY_NEEDED && YYCOPY_NEEDED +/* Copy COUNT objects from SRC to DST. The source and destination do + not overlap. */ +# ifndef YYCOPY +# if defined __GNUC__ && 1 < __GNUC__ +# define YYCOPY(Dst, Src, Count) \ + __builtin_memcpy (Dst, Src, (Count) * sizeof (*(Src))) +# else +# define YYCOPY(Dst, Src, Count) \ + do \ + { \ + YYSIZE_T yyi; \ + for (yyi = 0; yyi < (Count); yyi++) \ + (Dst)[yyi] = (Src)[yyi]; \ + } \ + while (YYID (0)) +# endif +# endif +#endif /* !YYCOPY_NEEDED */ + +/* YYFINAL -- State number of the termination state. */ +#define YYFINAL 2 +/* YYLAST -- Last index in YYTABLE. */ +#define YYLAST 276 + +/* YYNTOKENS -- Number of terminals. */ +#define YYNTOKENS 149 +/* YYNNTS -- Number of nonterminals. */ +#define YYNNTS 154 +/* YYNRULES -- Number of rules. */ +#define YYNRULES 293 +/* YYNRULES -- Number of states. */ +#define YYNSTATES 429 + +/* YYTRANSLATE(YYLEX) -- Bison symbol number corresponding to YYLEX. */ +#define YYUNDEFTOK 2 +#define YYMAXUTOK 403 + +#define YYTRANSLATE(YYX) \ + ((unsigned int) (YYX) <= YYMAXUTOK ? yytranslate[YYX] : YYUNDEFTOK) + +/* YYTRANSLATE[YYLEX] -- Bison symbol number corresponding to YYLEX. */ +static const yytype_uint8 yytranslate[] = +{ + 0, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 1, 2, 3, 4, + 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, + 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, + 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, + 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, + 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, + 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, + 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, + 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, + 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, + 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, + 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, + 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, + 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, + 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, + 145, 146, 147, 148 +}; + +#if YYDEBUG +/* YYPRHS[YYN] -- Index of the first RHS symbol of rule number YYN in + YYRHS. */ +static const yytype_uint16 yyprhs[] = +{ + 0, 0, 3, 4, 7, 10, 13, 16, 19, 22, + 25, 27, 30, 31, 33, 35, 37, 39, 41, 43, + 45, 47, 49, 51, 53, 55, 57, 59, 61, 63, + 65, 67, 69, 71, 73, 75, 77, 79, 81, 83, + 85, 87, 89, 91, 93, 95, 97, 99, 101, 103, + 105, 107, 109, 111, 113, 115, 117, 119, 121, 123, + 125, 127, 129, 131, 133, 135, 137, 139, 141, 143, + 145, 147, 149, 151, 153, 155, 157, 159, 161, 163, + 165, 167, 169, 171, 173, 175, 177, 179, 181, 183, + 185, 187, 189, 191, 193, 195, 197, 199, 201, 203, + 205, 207, 209, 211, 213, 215, 217, 219, 221, 223, + 225, 227, 229, 231, 233, 235, 237, 239, 241, 244, + 245, 247, 249, 251, 253, 255, 257, 260, 261, 263, + 265, 267, 269, 272, 275, 278, 281, 284, 287, 290, + 293, 296, 299, 302, 305, 308, 311, 314, 317, 320, + 323, 326, 329, 332, 335, 338, 341, 344, 347, 350, + 353, 356, 359, 362, 365, 368, 371, 374, 377, 380, + 383, 386, 389, 392, 395, 398, 401, 404, 407, 410, + 413, 416, 419, 422, 425, 428, 431, 434, 437, 440, + 443, 446, 449, 452, 455, 458, 461, 464, 467, 470, + 473, 476, 479, 482, 485, 488, 491, 494, 497, 500, + 504, 507, 510, 513, 516, 519, 522, 525, 528, 531, + 534, 537, 540, 543, 546, 549, 552, 555, 558, 562, + 565, 568, 571, 574, 577, 580, 583, 586, 589, 592, + 595, 598, 601, 604, 607, 610, 612, 615, 616, 618, + 620, 622, 624, 626, 628, 630, 633, 636, 639, 642, + 645, 648, 651, 653, 656, 657, 659, 661, 663, 665, + 667, 669, 671, 673, 675, 677, 679, 681, 684, 687, + 690, 693, 696, 699, 702, 705, 708, 711, 714, 717, + 719, 722, 723, 725 +}; + +/* YYRHS -- A `-1'-separated list of the rules' RHS. */ +static const yytype_int16 yyrhs[] = +{ + 150, 0, -1, -1, 150, 151, -1, 152, 153, -1, + 155, 156, -1, 158, 159, -1, 299, 300, -1, 274, + 275, -1, 284, 285, -1, 11, -1, 153, 154, -1, + -1, 161, -1, 162, -1, 166, -1, 169, -1, 175, + -1, 176, -1, 177, -1, 178, -1, 167, -1, 188, + -1, 189, -1, 190, -1, 191, -1, 192, -1, 210, + -1, 211, -1, 212, -1, 216, -1, 217, -1, 172, + -1, 218, -1, 219, -1, 222, -1, 220, -1, 221, + -1, 223, -1, 224, -1, 225, -1, 236, -1, 201, + -1, 202, -1, 203, -1, 204, -1, 226, -1, 239, + -1, 197, -1, 199, -1, 240, -1, 245, -1, 246, + -1, 247, -1, 173, -1, 209, -1, 254, -1, 255, + -1, 198, -1, 250, -1, 185, -1, 168, -1, 193, + -1, 237, -1, 243, -1, 227, -1, 238, -1, 257, + -1, 258, -1, 174, -1, 163, -1, 184, -1, 230, + -1, 164, -1, 170, -1, 171, -1, 194, -1, 195, + -1, 256, -1, 229, -1, 231, -1, 232, -1, 165, + -1, 259, -1, 213, -1, 235, -1, 186, -1, 200, + -1, 241, -1, 242, -1, 244, -1, 249, -1, 196, + -1, 251, -1, 252, -1, 253, -1, 205, -1, 208, + -1, 233, -1, 234, -1, 206, -1, 228, -1, 248, + -1, 187, -1, 179, -1, 180, -1, 181, -1, 182, + -1, 183, -1, 260, -1, 261, -1, 262, -1, 207, + -1, 214, -1, 215, -1, 263, -1, 264, -1, 38, + -1, 156, 157, -1, -1, 265, -1, 266, -1, 267, + -1, 269, -1, 268, -1, 44, -1, 159, 160, -1, + -1, 270, -1, 271, -1, 272, -1, 273, -1, 13, + 10, -1, 12, 10, -1, 76, 10, -1, 79, 10, + -1, 96, 10, -1, 14, 10, -1, 16, 10, -1, + 67, 10, -1, 15, 10, -1, 80, 10, -1, 81, + 10, -1, 31, 10, -1, 60, 10, -1, 75, 10, + -1, 17, 10, -1, 18, 10, -1, 19, 10, -1, + 20, 10, -1, 122, 10, -1, 123, 10, -1, 124, + 10, -1, 125, 10, -1, 126, 10, -1, 77, 10, + -1, 66, 10, -1, 101, 10, -1, 121, 10, -1, + 21, 10, -1, 22, 10, -1, 23, 10, -1, 24, + 10, -1, 25, 10, -1, 68, 10, -1, 82, 10, + -1, 83, 10, -1, 109, 10, -1, 54, 10, -1, + 64, 10, -1, 55, 10, -1, 102, 10, -1, 48, + 10, -1, 49, 10, -1, 50, 10, -1, 51, 10, + -1, 113, 10, -1, 117, 10, -1, 118, 10, -1, + 114, 10, -1, 61, 10, -1, 26, 10, -1, 27, + 10, -1, 28, 10, -1, 98, 10, -1, 132, 10, + -1, 133, 10, -1, 29, 10, -1, 30, 10, -1, + 32, 10, -1, 33, 10, -1, 35, 10, -1, 36, + 10, -1, 34, 10, -1, 41, 10, -1, 42, 10, + -1, 43, 10, -1, 52, 10, -1, 71, 10, -1, + 119, 10, -1, 85, 10, -1, 78, 10, -1, 86, + 10, -1, 87, 10, -1, 115, 10, -1, 116, 10, + -1, 100, 10, -1, 47, 10, -1, 69, 10, -1, + 72, 10, 10, -1, 53, 10, -1, 56, 10, -1, + 105, 10, -1, 106, 10, -1, 70, 10, -1, 107, + 10, -1, 57, 10, -1, 58, 10, -1, 59, 10, + -1, 120, 10, -1, 108, 10, -1, 65, 10, -1, + 111, 10, -1, 112, 10, -1, 110, 10, -1, 62, + 10, -1, 63, 10, -1, 84, 10, -1, 73, 10, + 10, -1, 74, 10, -1, 97, 10, -1, 129, 10, + -1, 130, 10, -1, 131, 10, -1, 134, 10, -1, + 135, 10, -1, 37, 10, -1, 39, 10, -1, 40, + 10, -1, 128, 10, -1, 99, 10, -1, 37, 10, + -1, 45, 10, -1, 46, 10, -1, 127, 10, -1, + 88, -1, 275, 276, -1, -1, 277, -1, 279, -1, + 278, -1, 280, -1, 281, -1, 282, -1, 283, -1, + 89, 10, -1, 91, 10, -1, 90, 10, -1, 92, + 10, -1, 93, 10, -1, 94, 10, -1, 95, 10, + -1, 136, -1, 285, 286, -1, -1, 287, -1, 288, + -1, 289, -1, 290, -1, 291, -1, 292, -1, 293, + -1, 294, -1, 295, -1, 296, -1, 297, -1, 298, + -1, 137, 10, -1, 138, 10, -1, 139, 10, -1, + 140, 10, -1, 141, 10, -1, 142, 10, -1, 143, + 10, -1, 144, 10, -1, 145, 10, -1, 146, 10, + -1, 147, 10, -1, 148, 10, -1, 103, -1, 300, + 301, -1, -1, 302, -1, 104, 10, -1 +}; + +/* YYRLINE[YYN] -- source line where rule number YYN was defined. */ +static const yytype_uint16 yyrline[] = +{ + 0, 121, 121, 121, 122, 122, 123, 123, 124, 124, + 128, 133, 134, 135, 135, 135, 136, 136, 137, 137, + 137, 138, 138, 138, 139, 139, 139, 140, 140, 141, + 141, 142, 142, 143, 143, 144, 144, 145, 145, 146, + 146, 147, 147, 148, 148, 148, 149, 149, 149, 150, + 150, 150, 151, 151, 152, 152, 153, 153, 154, 154, + 155, 155, 155, 156, 156, 157, 157, 158, 158, 158, + 159, 159, 160, 160, 161, 161, 162, 162, 162, 163, + 163, 164, 164, 165, 165, 166, 166, 167, 167, 168, + 168, 168, 169, 169, 170, 170, 170, 171, 171, 171, + 172, 172, 172, 173, 173, 173, 174, 174, 174, 175, + 175, 175, 176, 176, 176, 177, 177, 179, 191, 192, + 193, 193, 193, 193, 193, 195, 207, 208, 209, 209, + 209, 209, 211, 220, 229, 240, 249, 258, 267, 280, + 295, 304, 313, 322, 331, 340, 349, 358, 367, 376, + 385, 394, 403, 410, 417, 426, 435, 449, 458, 467, + 474, 481, 488, 496, 503, 510, 517, 524, 532, 540, + 548, 555, 562, 571, 580, 587, 594, 602, 610, 620, + 633, 644, 652, 665, 674, 683, 692, 702, 710, 723, + 732, 740, 749, 757, 770, 777, 787, 797, 807, 817, + 827, 837, 847, 854, 861, 870, 879, 888, 895, 905, + 922, 929, 947, 960, 973, 982, 991, 1000, 1010, 1020, + 1029, 1038, 1045, 1054, 1063, 1072, 1080, 1093, 1101, 1123, + 1130, 1145, 1155, 1165, 1172, 1179, 1188, 1198, 1205, 1212, + 1221, 1231, 1241, 1248, 1255, 1264, 1269, 1270, 1271, 1271, + 1271, 1272, 1272, 1272, 1273, 1275, 1285, 1294, 1301, 1308, + 1315, 1322, 1329, 1334, 1335, 1336, 1336, 1337, 1337, 1338, + 1338, 1339, 1340, 1341, 1342, 1343, 1344, 1346, 1354, 1361, + 1369, 1377, 1384, 1391, 1400, 1409, 1418, 1427, 1436, 1445, + 1450, 1451, 1452, 1454 +}; +#endif + +#if YYDEBUG || YYERROR_VERBOSE || 0 +/* YYTNAME[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM. + First, the terminals, then, starting at YYNTOKENS, nonterminals. */ +static const char *const yytname[] = +{ + "$end", "error", "$undefined", "SPACE", "LETTER", "NEWLINE", "COMMENT", + "COLON", "ANY", "ZONESTR", "STRING_ARG", "VAR_SERVER", "VAR_VERBOSITY", + "VAR_NUM_THREADS", "VAR_PORT", "VAR_OUTGOING_RANGE", "VAR_INTERFACE", + "VAR_DO_IP4", "VAR_DO_IP6", "VAR_DO_UDP", "VAR_DO_TCP", "VAR_CHROOT", + "VAR_USERNAME", "VAR_DIRECTORY", "VAR_LOGFILE", "VAR_PIDFILE", + "VAR_MSG_CACHE_SIZE", "VAR_MSG_CACHE_SLABS", + "VAR_NUM_QUERIES_PER_THREAD", "VAR_RRSET_CACHE_SIZE", + "VAR_RRSET_CACHE_SLABS", "VAR_OUTGOING_NUM_TCP", "VAR_INFRA_HOST_TTL", + "VAR_INFRA_LAME_TTL", "VAR_INFRA_CACHE_SLABS", + "VAR_INFRA_CACHE_NUMHOSTS", "VAR_INFRA_CACHE_LAME_SIZE", "VAR_NAME", + "VAR_STUB_ZONE", "VAR_STUB_HOST", "VAR_STUB_ADDR", + "VAR_TARGET_FETCH_POLICY", "VAR_HARDEN_SHORT_BUFSIZE", + "VAR_HARDEN_LARGE_QUERIES", "VAR_FORWARD_ZONE", "VAR_FORWARD_HOST", + "VAR_FORWARD_ADDR", "VAR_DO_NOT_QUERY_ADDRESS", "VAR_HIDE_IDENTITY", + "VAR_HIDE_VERSION", "VAR_IDENTITY", "VAR_VERSION", "VAR_HARDEN_GLUE", + "VAR_MODULE_CONF", "VAR_TRUST_ANCHOR_FILE", "VAR_TRUST_ANCHOR", + "VAR_VAL_OVERRIDE_DATE", "VAR_BOGUS_TTL", "VAR_VAL_CLEAN_ADDITIONAL", + "VAR_VAL_PERMISSIVE_MODE", "VAR_INCOMING_NUM_TCP", "VAR_MSG_BUFFER_SIZE", + "VAR_KEY_CACHE_SIZE", "VAR_KEY_CACHE_SLABS", "VAR_TRUSTED_KEYS_FILE", + "VAR_VAL_NSEC3_KEYSIZE_ITERATIONS", "VAR_USE_SYSLOG", + "VAR_OUTGOING_INTERFACE", "VAR_ROOT_HINTS", "VAR_DO_NOT_QUERY_LOCALHOST", + "VAR_CACHE_MAX_TTL", "VAR_HARDEN_DNSSEC_STRIPPED", "VAR_ACCESS_CONTROL", + "VAR_LOCAL_ZONE", "VAR_LOCAL_DATA", "VAR_INTERFACE_AUTOMATIC", + "VAR_STATISTICS_INTERVAL", "VAR_DO_DAEMONIZE", "VAR_USE_CAPS_FOR_ID", + "VAR_STATISTICS_CUMULATIVE", "VAR_OUTGOING_PORT_PERMIT", + "VAR_OUTGOING_PORT_AVOID", "VAR_DLV_ANCHOR_FILE", "VAR_DLV_ANCHOR", + "VAR_NEG_CACHE_SIZE", "VAR_HARDEN_REFERRAL_PATH", "VAR_PRIVATE_ADDRESS", + "VAR_PRIVATE_DOMAIN", "VAR_REMOTE_CONTROL", "VAR_CONTROL_ENABLE", + "VAR_CONTROL_INTERFACE", "VAR_CONTROL_PORT", "VAR_SERVER_KEY_FILE", + "VAR_SERVER_CERT_FILE", "VAR_CONTROL_KEY_FILE", "VAR_CONTROL_CERT_FILE", + "VAR_EXTENDED_STATISTICS", "VAR_LOCAL_DATA_PTR", "VAR_JOSTLE_TIMEOUT", + "VAR_STUB_PRIME", "VAR_UNWANTED_REPLY_THRESHOLD", "VAR_LOG_TIME_ASCII", + "VAR_DOMAIN_INSECURE", "VAR_PYTHON", "VAR_PYTHON_SCRIPT", + "VAR_VAL_SIG_SKEW_MIN", "VAR_VAL_SIG_SKEW_MAX", "VAR_CACHE_MIN_TTL", + "VAR_VAL_LOG_LEVEL", "VAR_AUTO_TRUST_ANCHOR_FILE", "VAR_KEEP_MISSING", + "VAR_ADD_HOLDDOWN", "VAR_DEL_HOLDDOWN", "VAR_SO_RCVBUF", + "VAR_EDNS_BUFFER_SIZE", "VAR_PREFETCH", "VAR_PREFETCH_KEY", + "VAR_SO_SNDBUF", "VAR_SO_REUSEPORT", "VAR_HARDEN_BELOW_NXDOMAIN", + "VAR_IGNORE_CD_FLAG", "VAR_LOG_QUERIES", "VAR_TCP_UPSTREAM", + "VAR_SSL_UPSTREAM", "VAR_SSL_SERVICE_KEY", "VAR_SSL_SERVICE_PEM", + "VAR_SSL_PORT", "VAR_FORWARD_FIRST", "VAR_STUB_FIRST", + "VAR_MINIMAL_RESPONSES", "VAR_RRSET_ROUNDROBIN", "VAR_MAX_UDP_SIZE", + "VAR_DELAY_CLOSE", "VAR_UNBLOCK_LAN_ZONES", "VAR_DNS64_PREFIX", + "VAR_DNS64_SYNTHALL", "VAR_DNSTAP", "VAR_DNSTAP_ENABLE", + "VAR_DNSTAP_SOCKET_PATH", "VAR_DNSTAP_SEND_IDENTITY", + "VAR_DNSTAP_SEND_VERSION", "VAR_DNSTAP_IDENTITY", "VAR_DNSTAP_VERSION", + "VAR_DNSTAP_LOG_RESOLVER_QUERY_MESSAGES", + "VAR_DNSTAP_LOG_RESOLVER_RESPONSE_MESSAGES", + "VAR_DNSTAP_LOG_CLIENT_QUERY_MESSAGES", + "VAR_DNSTAP_LOG_CLIENT_RESPONSE_MESSAGES", + "VAR_DNSTAP_LOG_FORWARDER_QUERY_MESSAGES", + "VAR_DNSTAP_LOG_FORWARDER_RESPONSE_MESSAGES", "$accept", "toplevelvars", + "toplevelvar", "serverstart", "contents_server", "content_server", + "stubstart", "contents_stub", "content_stub", "forwardstart", + "contents_forward", "content_forward", "server_num_threads", + "server_verbosity", "server_statistics_interval", + "server_statistics_cumulative", "server_extended_statistics", + "server_port", "server_interface", "server_outgoing_interface", + "server_outgoing_range", "server_outgoing_port_permit", + "server_outgoing_port_avoid", "server_outgoing_num_tcp", + "server_incoming_num_tcp", "server_interface_automatic", "server_do_ip4", + "server_do_ip6", "server_do_udp", "server_do_tcp", "server_tcp_upstream", + "server_ssl_upstream", "server_ssl_service_key", + "server_ssl_service_pem", "server_ssl_port", "server_do_daemonize", + "server_use_syslog", "server_log_time_ascii", "server_log_queries", + "server_chroot", "server_username", "server_directory", "server_logfile", + "server_pidfile", "server_root_hints", "server_dlv_anchor_file", + "server_dlv_anchor", "server_auto_trust_anchor_file", + "server_trust_anchor_file", "server_trusted_keys_file", + "server_trust_anchor", "server_domain_insecure", "server_hide_identity", + "server_hide_version", "server_identity", "server_version", + "server_so_rcvbuf", "server_so_sndbuf", "server_so_reuseport", + "server_edns_buffer_size", "server_msg_buffer_size", + "server_msg_cache_size", "server_msg_cache_slabs", + "server_num_queries_per_thread", "server_jostle_timeout", + "server_delay_close", "server_unblock_lan_zones", + "server_rrset_cache_size", "server_rrset_cache_slabs", + "server_infra_host_ttl", "server_infra_lame_ttl", + "server_infra_cache_numhosts", "server_infra_cache_lame_size", + "server_infra_cache_slabs", "server_target_fetch_policy", + "server_harden_short_bufsize", "server_harden_large_queries", + "server_harden_glue", "server_harden_dnssec_stripped", + "server_harden_below_nxdomain", "server_harden_referral_path", + "server_use_caps_for_id", "server_private_address", + "server_private_domain", "server_prefetch", "server_prefetch_key", + "server_unwanted_reply_threshold", "server_do_not_query_address", + "server_do_not_query_localhost", "server_access_control", + "server_module_conf", "server_val_override_date", + "server_val_sig_skew_min", "server_val_sig_skew_max", + "server_cache_max_ttl", "server_cache_min_ttl", "server_bogus_ttl", + "server_val_clean_additional", "server_val_permissive_mode", + "server_ignore_cd_flag", "server_val_log_level", + "server_val_nsec3_keysize_iterations", "server_add_holddown", + "server_del_holddown", "server_keep_missing", "server_key_cache_size", + "server_key_cache_slabs", "server_neg_cache_size", "server_local_zone", + "server_local_data", "server_local_data_ptr", "server_minimal_responses", + "server_rrset_roundrobin", "server_max_udp_size", "server_dns64_prefix", + "server_dns64_synthall", "stub_name", "stub_host", "stub_addr", + "stub_first", "stub_prime", "forward_name", "forward_host", + "forward_addr", "forward_first", "rcstart", "contents_rc", "content_rc", + "rc_control_enable", "rc_control_port", "rc_control_interface", + "rc_server_key_file", "rc_server_cert_file", "rc_control_key_file", + "rc_control_cert_file", "dtstart", "contents_dt", "content_dt", + "dt_dnstap_enable", "dt_dnstap_socket_path", "dt_dnstap_send_identity", + "dt_dnstap_send_version", "dt_dnstap_identity", "dt_dnstap_version", + "dt_dnstap_log_resolver_query_messages", + "dt_dnstap_log_resolver_response_messages", + "dt_dnstap_log_client_query_messages", + "dt_dnstap_log_client_response_messages", + "dt_dnstap_log_forwarder_query_messages", + "dt_dnstap_log_forwarder_response_messages", "pythonstart", + "contents_py", "content_py", "py_script", YY_NULL +}; +#endif + +# ifdef YYPRINT +/* YYTOKNUM[YYLEX-NUM] -- Internal token number corresponding to + token YYLEX-NUM. */ +static const yytype_uint16 yytoknum[] = +{ + 0, 256, 257, 258, 259, 260, 261, 262, 263, 264, + 265, 266, 267, 268, 269, 270, 271, 272, 273, 274, + 275, 276, 277, 278, 279, 280, 281, 282, 283, 284, + 285, 286, 287, 288, 289, 290, 291, 292, 293, 294, + 295, 296, 297, 298, 299, 300, 301, 302, 303, 304, + 305, 306, 307, 308, 309, 310, 311, 312, 313, 314, + 315, 316, 317, 318, 319, 320, 321, 322, 323, 324, + 325, 326, 327, 328, 329, 330, 331, 332, 333, 334, + 335, 336, 337, 338, 339, 340, 341, 342, 343, 344, + 345, 346, 347, 348, 349, 350, 351, 352, 353, 354, + 355, 356, 357, 358, 359, 360, 361, 362, 363, 364, + 365, 366, 367, 368, 369, 370, 371, 372, 373, 374, + 375, 376, 377, 378, 379, 380, 381, 382, 383, 384, + 385, 386, 387, 388, 389, 390, 391, 392, 393, 394, + 395, 396, 397, 398, 399, 400, 401, 402, 403 +}; +# endif + +/* YYR1[YYN] -- Symbol number of symbol that rule YYN derives. */ +static const yytype_uint16 yyr1[] = +{ + 0, 149, 150, 150, 151, 151, 151, 151, 151, 151, + 152, 153, 153, 154, 154, 154, 154, 154, 154, 154, + 154, 154, 154, 154, 154, 154, 154, 154, 154, 154, + 154, 154, 154, 154, 154, 154, 154, 154, 154, 154, + 154, 154, 154, 154, 154, 154, 154, 154, 154, 154, + 154, 154, 154, 154, 154, 154, 154, 154, 154, 154, + 154, 154, 154, 154, 154, 154, 154, 154, 154, 154, + 154, 154, 154, 154, 154, 154, 154, 154, 154, 154, + 154, 154, 154, 154, 154, 154, 154, 154, 154, 154, + 154, 154, 154, 154, 154, 154, 154, 154, 154, 154, + 154, 154, 154, 154, 154, 154, 154, 154, 154, 154, + 154, 154, 154, 154, 154, 154, 154, 155, 156, 156, + 157, 157, 157, 157, 157, 158, 159, 159, 160, 160, + 160, 160, 161, 162, 163, 164, 165, 166, 167, 168, + 169, 170, 171, 172, 173, 174, 175, 176, 177, 178, + 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, + 189, 190, 191, 192, 193, 194, 195, 196, 197, 198, + 199, 200, 201, 202, 203, 204, 205, 206, 207, 208, + 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, + 219, 220, 221, 222, 223, 224, 225, 226, 227, 228, + 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, + 239, 240, 241, 242, 243, 244, 245, 246, 247, 248, + 249, 250, 251, 252, 253, 254, 255, 256, 257, 258, + 259, 260, 261, 262, 263, 264, 265, 266, 267, 268, + 269, 270, 271, 272, 273, 274, 275, 275, 276, 276, + 276, 276, 276, 276, 276, 277, 278, 279, 280, 281, + 282, 283, 284, 285, 285, 286, 286, 286, 286, 286, + 286, 286, 286, 286, 286, 286, 286, 287, 288, 289, + 290, 291, 292, 293, 294, 295, 296, 297, 298, 299, + 300, 300, 301, 302 +}; + +/* YYR2[YYN] -- Number of symbols composing right hand side of rule YYN. */ +static const yytype_uint8 yyr2[] = +{ + 0, 2, 0, 2, 2, 2, 2, 2, 2, 2, + 1, 2, 0, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 2, 0, + 1, 1, 1, 1, 1, 1, 2, 0, 1, 1, + 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 3, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 1, 2, 0, 1, 1, + 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, + 2, 2, 1, 2, 0, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, + 2, 0, 1, 2 +}; + +/* YYDEFACT[STATE-NAME] -- Default reduction number in state STATE-NUM. + Performed when YYTABLE doesn't specify something else to do. Zero + means the default is an error. */ +static const yytype_uint16 yydefact[] = +{ + 2, 0, 1, 10, 117, 125, 245, 289, 262, 3, + 12, 119, 127, 247, 264, 291, 4, 5, 6, 8, + 9, 7, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 11, 13, 14, 70, + 73, 82, 15, 21, 61, 16, 74, 75, 32, 54, + 69, 17, 18, 19, 20, 104, 105, 106, 107, 108, + 71, 60, 86, 103, 22, 23, 24, 25, 26, 62, + 76, 77, 92, 48, 58, 49, 87, 42, 43, 44, + 45, 96, 100, 112, 97, 55, 27, 28, 29, 84, + 113, 114, 30, 31, 33, 34, 36, 37, 35, 38, + 39, 40, 46, 65, 101, 79, 72, 80, 81, 98, + 99, 85, 41, 63, 66, 47, 50, 88, 89, 64, + 90, 51, 52, 53, 102, 91, 59, 93, 94, 95, + 56, 57, 78, 67, 68, 83, 109, 110, 111, 115, + 116, 0, 0, 0, 0, 0, 118, 120, 121, 122, + 124, 123, 0, 0, 0, 0, 126, 128, 129, 130, + 131, 0, 0, 0, 0, 0, 0, 0, 246, 248, + 250, 249, 251, 252, 253, 254, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 263, 265, + 266, 267, 268, 269, 270, 271, 272, 273, 274, 275, + 276, 0, 290, 292, 133, 132, 137, 140, 138, 146, + 147, 148, 149, 159, 160, 161, 162, 163, 181, 182, + 183, 187, 188, 143, 189, 190, 193, 191, 192, 194, + 195, 196, 207, 172, 173, 174, 175, 197, 210, 168, + 170, 211, 216, 217, 218, 144, 180, 225, 226, 169, + 221, 156, 139, 164, 208, 214, 198, 0, 0, 229, + 145, 134, 155, 201, 135, 141, 142, 165, 166, 227, + 200, 202, 203, 136, 230, 184, 206, 157, 171, 212, + 213, 215, 220, 167, 224, 222, 223, 176, 179, 204, + 205, 177, 178, 199, 219, 158, 150, 151, 152, 153, + 154, 231, 232, 233, 185, 186, 234, 235, 236, 237, + 238, 240, 239, 241, 242, 243, 244, 255, 257, 256, + 258, 259, 260, 261, 277, 278, 279, 280, 281, 282, + 283, 284, 285, 286, 287, 288, 293, 209, 228 +}; + +/* YYDEFGOTO[NTERM-NUM]. */ +static const yytype_int16 yydefgoto[] = +{ + -1, 1, 9, 10, 16, 126, 11, 17, 236, 12, + 18, 246, 127, 128, 129, 130, 131, 132, 133, 134, + 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, + 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, + 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, + 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, + 175, 176, 177, 178, 179, 180, 181, 182, 183, 184, + 185, 186, 187, 188, 189, 190, 191, 192, 193, 194, + 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, + 205, 206, 207, 208, 209, 210, 211, 212, 213, 214, + 215, 216, 217, 218, 219, 220, 221, 222, 223, 224, + 225, 226, 227, 228, 229, 230, 237, 238, 239, 240, + 241, 247, 248, 249, 250, 13, 19, 258, 259, 260, + 261, 262, 263, 264, 265, 14, 20, 278, 279, 280, + 281, 282, 283, 284, 285, 286, 287, 288, 289, 290, + 15, 21, 292, 293 +}; + +/* YYPACT[STATE-NUM] -- Index in YYTABLE of the portion describing + STATE-NUM. */ +#define YYPACT_NINF -123 +static const yytype_int16 yypact[] = +{ + -123, 0, -123, -123, -123, -123, -123, -123, -123, -123, + -123, -123, -123, -123, -123, -123, 92, -36, -32, -62, + -122, -102, -4, -3, -2, -1, 2, 24, 25, 26, + 27, 29, 30, 31, 32, 33, 35, 36, 37, 38, + 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, + 49, 50, 51, 52, 54, 55, 56, 57, 58, 59, + 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, + 70, 71, 72, 73, 74, 75, 76, 77, 79, 80, + 81, 83, 84, 86, 87, 88, 89, 90, 91, 119, + 120, 121, 122, 127, 128, 170, 171, 172, 173, 174, + 175, 176, 177, 181, 185, 186, 209, 210, 218, 219, + 220, 221, 222, 223, 224, 225, 226, 227, 228, 229, + 230, 231, 232, 233, 234, 235, -123, -123, -123, -123, + -123, -123, -123, -123, -123, -123, -123, -123, -123, -123, + -123, -123, -123, -123, -123, -123, -123, -123, -123, -123, + -123, -123, -123, -123, -123, -123, -123, -123, -123, -123, + -123, -123, -123, -123, -123, -123, -123, -123, -123, -123, + -123, -123, -123, -123, -123, -123, -123, -123, -123, -123, + -123, -123, -123, -123, -123, -123, -123, -123, -123, -123, + -123, -123, -123, -123, -123, -123, -123, -123, -123, -123, + -123, -123, -123, -123, -123, -123, -123, -123, -123, -123, + -123, -123, -123, -123, -123, -123, -123, -123, -123, -123, + -123, -123, -123, -123, -123, -123, -123, -123, -123, -123, + -123, 236, 237, 238, 239, 240, -123, -123, -123, -123, + -123, -123, 241, 242, 243, 244, -123, -123, -123, -123, + -123, 245, 246, 247, 248, 249, 250, 251, -123, -123, + -123, -123, -123, -123, -123, -123, 252, 253, 254, 255, + 256, 257, 258, 259, 260, 261, 262, 263, -123, -123, + -123, -123, -123, -123, -123, -123, -123, -123, -123, -123, + -123, 264, -123, -123, -123, -123, -123, -123, -123, -123, + -123, -123, -123, -123, -123, -123, -123, -123, -123, -123, + -123, -123, -123, -123, -123, -123, -123, -123, -123, -123, + -123, -123, -123, -123, -123, -123, -123, -123, -123, -123, + -123, -123, -123, -123, -123, -123, -123, -123, -123, -123, + -123, -123, -123, -123, -123, -123, -123, 265, 266, -123, + -123, -123, -123, -123, -123, -123, -123, -123, -123, -123, + -123, -123, -123, -123, -123, -123, -123, -123, -123, -123, + -123, -123, -123, -123, -123, -123, -123, -123, -123, -123, + -123, -123, -123, -123, -123, -123, -123, -123, -123, -123, + -123, -123, -123, -123, -123, -123, -123, -123, -123, -123, + -123, -123, -123, -123, -123, -123, -123, -123, -123, -123, + -123, -123, -123, -123, -123, -123, -123, -123, -123, -123, + -123, -123, -123, -123, -123, -123, -123, -123, -123 +}; + +/* YYPGOTO[NTERM-NUM]. */ +static const yytype_int8 yypgoto[] = +{ + -123, -123, -123, -123, -123, -123, -123, -123, -123, -123, + -123, -123, -123, -123, -123, -123, -123, -123, -123, -123, + -123, -123, -123, -123, -123, -123, -123, -123, -123, -123, + -123, -123, -123, -123, -123, -123, -123, -123, -123, -123, + -123, -123, -123, -123, -123, -123, -123, -123, -123, -123, + -123, -123, -123, -123, -123, -123, -123, -123, -123, -123, + -123, -123, -123, -123, -123, -123, -123, -123, -123, -123, + -123, -123, -123, -123, -123, -123, -123, -123, -123, -123, + -123, -123, -123, -123, -123, -123, -123, -123, -123, -123, + -123, -123, -123, -123, -123, -123, -123, -123, -123, -123, + -123, -123, -123, -123, -123, -123, -123, -123, -123, -123, + -123, -123, -123, -123, -123, -123, -123, -123, -123, -123, + -123, -123, -123, -123, -123, -123, -123, -123, -123, -123, + -123, -123, -123, -123, -123, -123, -123, -123, -123, -123, + -123, -123, -123, -123, -123, -123, -123, -123, -123, -123, + -123, -123, -123, -123 +}; + +/* YYTABLE[YYPACT[STATE-NUM]]. What to do in state STATE-NUM. If + positive, shift that token. If negative, reduce the rule which + number is the opposite. If YYTABLE_NINF, syntax error. */ +#define YYTABLE_NINF -1 +static const yytype_uint16 yytable[] = +{ + 2, 231, 291, 232, 233, 242, 294, 295, 296, 297, + 0, 3, 298, 243, 244, 266, 267, 268, 269, 270, + 271, 272, 273, 274, 275, 276, 277, 251, 252, 253, + 254, 255, 256, 257, 299, 300, 301, 302, 4, 303, + 304, 305, 306, 307, 5, 308, 309, 310, 311, 312, + 313, 314, 315, 316, 317, 318, 319, 320, 321, 322, + 323, 324, 325, 234, 326, 327, 328, 329, 330, 331, + 332, 333, 334, 335, 336, 337, 338, 339, 340, 341, + 342, 343, 344, 345, 346, 347, 348, 349, 6, 350, + 351, 352, 235, 353, 354, 245, 355, 356, 357, 358, + 359, 360, 0, 7, 22, 23, 24, 25, 26, 27, + 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, + 38, 39, 40, 41, 42, 43, 44, 45, 46, 361, + 362, 363, 364, 47, 48, 49, 8, 365, 366, 50, + 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, + 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, + 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, + 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, + 367, 368, 369, 370, 371, 372, 373, 374, 91, 92, + 93, 375, 94, 95, 96, 376, 377, 97, 98, 99, + 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, + 110, 111, 112, 113, 114, 115, 116, 117, 118, 378, + 379, 119, 120, 121, 122, 123, 124, 125, 380, 381, + 382, 383, 384, 385, 386, 387, 388, 389, 390, 391, + 392, 393, 394, 395, 396, 397, 398, 399, 400, 401, + 402, 403, 404, 405, 406, 407, 408, 409, 410, 411, + 412, 413, 414, 415, 416, 417, 418, 419, 420, 421, + 422, 423, 424, 425, 426, 427, 428 +}; + +#define yypact_value_is_default(yystate) \ + ((yystate) == (-123)) + +#define yytable_value_is_error(yytable_value) \ + YYID (0) + +static const yytype_int16 yycheck[] = +{ + 0, 37, 104, 39, 40, 37, 10, 10, 10, 10, + -1, 11, 10, 45, 46, 137, 138, 139, 140, 141, + 142, 143, 144, 145, 146, 147, 148, 89, 90, 91, + 92, 93, 94, 95, 10, 10, 10, 10, 38, 10, + 10, 10, 10, 10, 44, 10, 10, 10, 10, 10, + 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, + 10, 10, 10, 99, 10, 10, 10, 10, 10, 10, + 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, + 10, 10, 10, 10, 10, 10, 10, 10, 88, 10, + 10, 10, 128, 10, 10, 127, 10, 10, 10, 10, + 10, 10, -1, 103, 12, 13, 14, 15, 16, 17, + 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, + 28, 29, 30, 31, 32, 33, 34, 35, 36, 10, + 10, 10, 10, 41, 42, 43, 136, 10, 10, 47, + 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, + 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, + 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, + 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, + 10, 10, 10, 10, 10, 10, 10, 10, 96, 97, + 98, 10, 100, 101, 102, 10, 10, 105, 106, 107, + 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, + 118, 119, 120, 121, 122, 123, 124, 125, 126, 10, + 10, 129, 130, 131, 132, 133, 134, 135, 10, 10, + 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, + 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, + 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, + 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, + 10, 10, 10, 10, 10, 10, 10 +}; + +/* YYSTOS[STATE-NUM] -- The (internal number of the) accessing + symbol of state STATE-NUM. */ +static const yytype_uint16 yystos[] = +{ + 0, 150, 0, 11, 38, 44, 88, 103, 136, 151, + 152, 155, 158, 274, 284, 299, 153, 156, 159, 275, + 285, 300, 12, 13, 14, 15, 16, 17, 18, 19, + 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, + 30, 31, 32, 33, 34, 35, 36, 41, 42, 43, + 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, + 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, + 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, + 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, + 87, 96, 97, 98, 100, 101, 102, 105, 106, 107, + 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, + 118, 119, 120, 121, 122, 123, 124, 125, 126, 129, + 130, 131, 132, 133, 134, 135, 154, 161, 162, 163, + 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, + 174, 175, 176, 177, 178, 179, 180, 181, 182, 183, + 184, 185, 186, 187, 188, 189, 190, 191, 192, 193, + 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, + 204, 205, 206, 207, 208, 209, 210, 211, 212, 213, + 214, 215, 216, 217, 218, 219, 220, 221, 222, 223, + 224, 225, 226, 227, 228, 229, 230, 231, 232, 233, + 234, 235, 236, 237, 238, 239, 240, 241, 242, 243, + 244, 245, 246, 247, 248, 249, 250, 251, 252, 253, + 254, 255, 256, 257, 258, 259, 260, 261, 262, 263, + 264, 37, 39, 40, 99, 128, 157, 265, 266, 267, + 268, 269, 37, 45, 46, 127, 160, 270, 271, 272, + 273, 89, 90, 91, 92, 93, 94, 95, 276, 277, + 278, 279, 280, 281, 282, 283, 137, 138, 139, 140, + 141, 142, 143, 144, 145, 146, 147, 148, 286, 287, + 288, 289, 290, 291, 292, 293, 294, 295, 296, 297, + 298, 104, 301, 302, 10, 10, 10, 10, 10, 10, + 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, + 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, + 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, + 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, + 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, + 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, + 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, + 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, + 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, + 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, + 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, + 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, + 10, 10, 10, 10, 10, 10, 10, 10, 10 +}; + +#define yyerrok (yyerrstatus = 0) +#define yyclearin (yychar = YYEMPTY) +#define YYEMPTY (-2) +#define YYEOF 0 + +#define YYACCEPT goto yyacceptlab +#define YYABORT goto yyabortlab +#define YYERROR goto yyerrorlab + + +/* Like YYERROR except do call yyerror. This remains here temporarily + to ease the transition to the new meaning of YYERROR, for GCC. + Once GCC version 2 has supplanted version 1, this can go. However, + YYFAIL appears to be in use. Nevertheless, it is formally deprecated + in Bison 2.4.2's NEWS entry, where a plan to phase it out is + discussed. */ + +#define YYFAIL goto yyerrlab +#if defined YYFAIL + /* This is here to suppress warnings from the GCC cpp's + -Wunused-macros. Normally we don't worry about that warning, but + some users do, and we want to make it easy for users to remove + YYFAIL uses, which will produce warnings from Bison 2.5. */ +#endif + +#define YYRECOVERING() (!!yyerrstatus) + +#define YYBACKUP(Token, Value) \ +do \ + if (yychar == YYEMPTY) \ + { \ + yychar = (Token); \ + yylval = (Value); \ + YYPOPSTACK (yylen); \ + yystate = *yyssp; \ + goto yybackup; \ + } \ + else \ + { \ + yyerror (YY_("syntax error: cannot back up")); \ + YYERROR; \ + } \ +while (YYID (0)) + + +#define YYTERROR 1 +#define YYERRCODE 256 + +/* YYLLOC_DEFAULT -- Set CURRENT to span from RHS[1] to RHS[N]. + If N is 0, then set CURRENT to the empty location which ends + the previous symbol: RHS[0] (always defined). */ + +#ifndef YYLLOC_DEFAULT +# define YYLLOC_DEFAULT(Current, Rhs, N) \ + do \ + if (YYID (N)) \ + { \ + (Current).first_line = YYRHSLOC (Rhs, 1).first_line; \ + (Current).first_column = YYRHSLOC (Rhs, 1).first_column; \ + (Current).last_line = YYRHSLOC (Rhs, N).last_line; \ + (Current).last_column = YYRHSLOC (Rhs, N).last_column; \ + } \ + else \ + { \ + (Current).first_line = (Current).last_line = \ + YYRHSLOC (Rhs, 0).last_line; \ + (Current).first_column = (Current).last_column = \ + YYRHSLOC (Rhs, 0).last_column; \ + } \ + while (YYID (0)) +#endif + +#define YYRHSLOC(Rhs, K) ((Rhs)[K]) + + + +/* This macro is provided for backward compatibility. */ + +#ifndef YY_LOCATION_PRINT +# define YY_LOCATION_PRINT(File, Loc) ((void) 0) +#endif + + +/* YYLEX -- calling `yylex' with the right arguments. */ + +#ifdef YYLEX_PARAM +# define YYLEX yylex (YYLEX_PARAM) +#else +# define YYLEX yylex () +#endif + +/* Enable debugging if requested. */ +#if YYDEBUG + +# ifndef YYFPRINTF +# include <stdio.h> /* INFRINGES ON USER NAME SPACE */ +# define YYFPRINTF fprintf +# endif + +# define YYDPRINTF(Args) \ +do { \ + if (yydebug) \ + YYFPRINTF Args; \ +} while (YYID (0)) + +# define YY_SYMBOL_PRINT(Title, Type, Value, Location) \ +do { \ + if (yydebug) \ + { \ + YYFPRINTF (stderr, "%s ", Title); \ + yy_symbol_print (stderr, \ + Type, Value); \ + YYFPRINTF (stderr, "\n"); \ + } \ +} while (YYID (0)) + + +/*--------------------------------. +| Print this symbol on YYOUTPUT. | +`--------------------------------*/ + +/*ARGSUSED*/ +#if (defined __STDC__ || defined __C99__FUNC__ \ + || defined __cplusplus || defined _MSC_VER) +static void +yy_symbol_value_print (FILE *yyoutput, int yytype, YYSTYPE const * const yyvaluep) +#else +static void +yy_symbol_value_print (yyoutput, yytype, yyvaluep) + FILE *yyoutput; + int yytype; + YYSTYPE const * const yyvaluep; +#endif +{ + FILE *yyo = yyoutput; + YYUSE (yyo); + if (!yyvaluep) + return; +# ifdef YYPRINT + if (yytype < YYNTOKENS) + YYPRINT (yyoutput, yytoknum[yytype], *yyvaluep); +# else + YYUSE (yyoutput); +# endif + switch (yytype) + { + default: + break; + } +} + + +/*--------------------------------. +| Print this symbol on YYOUTPUT. | +`--------------------------------*/ + +#if (defined __STDC__ || defined __C99__FUNC__ \ + || defined __cplusplus || defined _MSC_VER) +static void +yy_symbol_print (FILE *yyoutput, int yytype, YYSTYPE const * const yyvaluep) +#else +static void +yy_symbol_print (yyoutput, yytype, yyvaluep) + FILE *yyoutput; + int yytype; + YYSTYPE const * const yyvaluep; +#endif +{ + if (yytype < YYNTOKENS) + YYFPRINTF (yyoutput, "token %s (", yytname[yytype]); + else + YYFPRINTF (yyoutput, "nterm %s (", yytname[yytype]); + + yy_symbol_value_print (yyoutput, yytype, yyvaluep); + YYFPRINTF (yyoutput, ")"); +} + +/*------------------------------------------------------------------. +| yy_stack_print -- Print the state stack from its BOTTOM up to its | +| TOP (included). | +`------------------------------------------------------------------*/ + +#if (defined __STDC__ || defined __C99__FUNC__ \ + || defined __cplusplus || defined _MSC_VER) +static void +yy_stack_print (yytype_int16 *yybottom, yytype_int16 *yytop) +#else +static void +yy_stack_print (yybottom, yytop) + yytype_int16 *yybottom; + yytype_int16 *yytop; +#endif +{ + YYFPRINTF (stderr, "Stack now"); + for (; yybottom <= yytop; yybottom++) + { + int yybot = *yybottom; + YYFPRINTF (stderr, " %d", yybot); + } + YYFPRINTF (stderr, "\n"); +} + +# define YY_STACK_PRINT(Bottom, Top) \ +do { \ + if (yydebug) \ + yy_stack_print ((Bottom), (Top)); \ +} while (YYID (0)) + + +/*------------------------------------------------. +| Report that the YYRULE is going to be reduced. | +`------------------------------------------------*/ + +#if (defined __STDC__ || defined __C99__FUNC__ \ + || defined __cplusplus || defined _MSC_VER) +static void +yy_reduce_print (YYSTYPE *yyvsp, int yyrule) +#else +static void +yy_reduce_print (yyvsp, yyrule) + YYSTYPE *yyvsp; + int yyrule; +#endif +{ + int yynrhs = yyr2[yyrule]; + int yyi; + unsigned long int yylno = yyrline[yyrule]; + YYFPRINTF (stderr, "Reducing stack by rule %d (line %lu):\n", + yyrule - 1, yylno); + /* The symbols being reduced. */ + for (yyi = 0; yyi < yynrhs; yyi++) + { + YYFPRINTF (stderr, " $%d = ", yyi + 1); + yy_symbol_print (stderr, yyrhs[yyprhs[yyrule] + yyi], + &(yyvsp[(yyi + 1) - (yynrhs)]) + ); + YYFPRINTF (stderr, "\n"); + } +} + +# define YY_REDUCE_PRINT(Rule) \ +do { \ + if (yydebug) \ + yy_reduce_print (yyvsp, Rule); \ +} while (YYID (0)) + +/* Nonzero means print parse trace. It is left uninitialized so that + multiple parsers can coexist. */ +int yydebug; +#else /* !YYDEBUG */ +# define YYDPRINTF(Args) +# define YY_SYMBOL_PRINT(Title, Type, Value, Location) +# define YY_STACK_PRINT(Bottom, Top) +# define YY_REDUCE_PRINT(Rule) +#endif /* !YYDEBUG */ + + +/* YYINITDEPTH -- initial size of the parser's stacks. */ +#ifndef YYINITDEPTH +# define YYINITDEPTH 200 +#endif + +/* YYMAXDEPTH -- maximum size the stacks can grow to (effective only + if the built-in stack extension method is used). + + Do not make this value too large; the results are undefined if + YYSTACK_ALLOC_MAXIMUM < YYSTACK_BYTES (YYMAXDEPTH) + evaluated with infinite-precision integer arithmetic. */ + +#ifndef YYMAXDEPTH +# define YYMAXDEPTH 10000 +#endif + + +#if YYERROR_VERBOSE + +# ifndef yystrlen +# if defined __GLIBC__ && defined _STRING_H +# define yystrlen strlen +# else +/* Return the length of YYSTR. */ +#if (defined __STDC__ || defined __C99__FUNC__ \ + || defined __cplusplus || defined _MSC_VER) +static YYSIZE_T +yystrlen (const char *yystr) +#else +static YYSIZE_T +yystrlen (yystr) + const char *yystr; +#endif +{ + YYSIZE_T yylen; + for (yylen = 0; yystr[yylen]; yylen++) + continue; + return yylen; +} +# endif +# endif + +# ifndef yystpcpy +# if defined __GLIBC__ && defined _STRING_H && defined _GNU_SOURCE +# define yystpcpy stpcpy +# else +/* Copy YYSRC to YYDEST, returning the address of the terminating '\0' in + YYDEST. */ +#if (defined __STDC__ || defined __C99__FUNC__ \ + || defined __cplusplus || defined _MSC_VER) +static char * +yystpcpy (char *yydest, const char *yysrc) +#else +static char * +yystpcpy (yydest, yysrc) + char *yydest; + const char *yysrc; +#endif +{ + char *yyd = yydest; + const char *yys = yysrc; + + while ((*yyd++ = *yys++) != '\0') + continue; + + return yyd - 1; +} +# endif +# endif + +# ifndef yytnamerr +/* Copy to YYRES the contents of YYSTR after stripping away unnecessary + quotes and backslashes, so that it's suitable for yyerror. The + heuristic is that double-quoting is unnecessary unless the string + contains an apostrophe, a comma, or backslash (other than + backslash-backslash). YYSTR is taken from yytname. If YYRES is + null, do not copy; instead, return the length of what the result + would have been. */ +static YYSIZE_T +yytnamerr (char *yyres, const char *yystr) +{ + if (*yystr == '"') + { + YYSIZE_T yyn = 0; + char const *yyp = yystr; + + for (;;) + switch (*++yyp) + { + case '\'': + case ',': + goto do_not_strip_quotes; + + case '\\': + if (*++yyp != '\\') + goto do_not_strip_quotes; + /* Fall through. */ + default: + if (yyres) + yyres[yyn] = *yyp; + yyn++; + break; + + case '"': + if (yyres) + yyres[yyn] = '\0'; + return yyn; + } + do_not_strip_quotes: ; + } + + if (! yyres) + return yystrlen (yystr); + + return yystpcpy (yyres, yystr) - yyres; +} +# endif + +/* Copy into *YYMSG, which is of size *YYMSG_ALLOC, an error message + about the unexpected token YYTOKEN for the state stack whose top is + YYSSP. + + Return 0 if *YYMSG was successfully written. Return 1 if *YYMSG is + not large enough to hold the message. In that case, also set + *YYMSG_ALLOC to the required number of bytes. Return 2 if the + required number of bytes is too large to store. */ +static int +yysyntax_error (YYSIZE_T *yymsg_alloc, char **yymsg, + yytype_int16 *yyssp, int yytoken) +{ + YYSIZE_T yysize0 = yytnamerr (YY_NULL, yytname[yytoken]); + YYSIZE_T yysize = yysize0; + YYSIZE_T yysize1; + enum { YYERROR_VERBOSE_ARGS_MAXIMUM = 5 }; + /* Internationalized format string. */ + const char *yyformat = YY_NULL; + /* Arguments of yyformat. */ + char const *yyarg[YYERROR_VERBOSE_ARGS_MAXIMUM]; + /* Number of reported tokens (one for the "unexpected", one per + "expected"). */ + int yycount = 0; + + /* There are many possibilities here to consider: + - Assume YYFAIL is not used. It's too flawed to consider. See + <http://lists.gnu.org/archive/html/bison-patches/2009-12/msg00024.html> + for details. YYERROR is fine as it does not invoke this + function. + - If this state is a consistent state with a default action, then + the only way this function was invoked is if the default action + is an error action. In that case, don't check for expected + tokens because there are none. + - The only way there can be no lookahead present (in yychar) is if + this state is a consistent state with a default action. Thus, + detecting the absence of a lookahead is sufficient to determine + that there is no unexpected or expected token to report. In that + case, just report a simple "syntax error". + - Don't assume there isn't a lookahead just because this state is a + consistent state with a default action. There might have been a + previous inconsistent state, consistent state with a non-default + action, or user semantic action that manipulated yychar. + - Of course, the expected token list depends on states to have + correct lookahead information, and it depends on the parser not + to perform extra reductions after fetching a lookahead from the + scanner and before detecting a syntax error. Thus, state merging + (from LALR or IELR) and default reductions corrupt the expected + token list. However, the list is correct for canonical LR with + one exception: it will still contain any token that will not be + accepted due to an error action in a later state. + */ + if (yytoken != YYEMPTY) + { + int yyn = yypact[*yyssp]; + yyarg[yycount++] = yytname[yytoken]; + if (!yypact_value_is_default (yyn)) + { + /* Start YYX at -YYN if negative to avoid negative indexes in + YYCHECK. In other words, skip the first -YYN actions for + this state because they are default actions. */ + int yyxbegin = yyn < 0 ? -yyn : 0; + /* Stay within bounds of both yycheck and yytname. */ + int yychecklim = YYLAST - yyn + 1; + int yyxend = yychecklim < YYNTOKENS ? yychecklim : YYNTOKENS; + int yyx; + + for (yyx = yyxbegin; yyx < yyxend; ++yyx) + if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR + && !yytable_value_is_error (yytable[yyx + yyn])) + { + if (yycount == YYERROR_VERBOSE_ARGS_MAXIMUM) + { + yycount = 1; + yysize = yysize0; + break; + } + yyarg[yycount++] = yytname[yyx]; + yysize1 = yysize + yytnamerr (YY_NULL, yytname[yyx]); + if (! (yysize <= yysize1 + && yysize1 <= YYSTACK_ALLOC_MAXIMUM)) + return 2; + yysize = yysize1; + } + } + } + + switch (yycount) + { +# define YYCASE_(N, S) \ + case N: \ + yyformat = S; \ + break + YYCASE_(0, YY_("syntax error")); + YYCASE_(1, YY_("syntax error, unexpected %s")); + YYCASE_(2, YY_("syntax error, unexpected %s, expecting %s")); + YYCASE_(3, YY_("syntax error, unexpected %s, expecting %s or %s")); + YYCASE_(4, YY_("syntax error, unexpected %s, expecting %s or %s or %s")); + YYCASE_(5, YY_("syntax error, unexpected %s, expecting %s or %s or %s or %s")); +# undef YYCASE_ + } + + yysize1 = yysize + yystrlen (yyformat); + if (! (yysize <= yysize1 && yysize1 <= YYSTACK_ALLOC_MAXIMUM)) + return 2; + yysize = yysize1; + + if (*yymsg_alloc < yysize) + { + *yymsg_alloc = 2 * yysize; + if (! (yysize <= *yymsg_alloc + && *yymsg_alloc <= YYSTACK_ALLOC_MAXIMUM)) + *yymsg_alloc = YYSTACK_ALLOC_MAXIMUM; + return 1; + } + + /* Avoid sprintf, as that infringes on the user's name space. + Don't have undefined behavior even if the translation + produced a string with the wrong number of "%s"s. */ + { + char *yyp = *yymsg; + int yyi = 0; + while ((*yyp = *yyformat) != '\0') + if (*yyp == '%' && yyformat[1] == 's' && yyi < yycount) + { + yyp += yytnamerr (yyp, yyarg[yyi++]); + yyformat += 2; + } + else + { + yyp++; + yyformat++; + } + } + return 0; +} +#endif /* YYERROR_VERBOSE */ + +/*-----------------------------------------------. +| Release the memory associated to this symbol. | +`-----------------------------------------------*/ + +/*ARGSUSED*/ +#if (defined __STDC__ || defined __C99__FUNC__ \ + || defined __cplusplus || defined _MSC_VER) +static void +yydestruct (const char *yymsg, int yytype, YYSTYPE *yyvaluep) +#else +static void +yydestruct (yymsg, yytype, yyvaluep) + const char *yymsg; + int yytype; + YYSTYPE *yyvaluep; +#endif +{ + YYUSE (yyvaluep); + + if (!yymsg) + yymsg = "Deleting"; + YY_SYMBOL_PRINT (yymsg, yytype, yyvaluep, yylocationp); + + switch (yytype) + { + + default: + break; + } +} + + + + +/* The lookahead symbol. */ +int yychar; + +/* The semantic value of the lookahead symbol. */ +YYSTYPE yylval; + +/* Number of syntax errors so far. */ +int yynerrs; + + +/*----------. +| yyparse. | +`----------*/ + +#ifdef YYPARSE_PARAM +#if (defined __STDC__ || defined __C99__FUNC__ \ + || defined __cplusplus || defined _MSC_VER) +int +yyparse (void *YYPARSE_PARAM) +#else +int +yyparse (YYPARSE_PARAM) + void *YYPARSE_PARAM; +#endif +#else /* ! YYPARSE_PARAM */ +#if (defined __STDC__ || defined __C99__FUNC__ \ + || defined __cplusplus || defined _MSC_VER) +int +yyparse (void) +#else +int +yyparse () + +#endif +#endif +{ + int yystate; + /* Number of tokens to shift before error messages enabled. */ + int yyerrstatus; + + /* The stacks and their tools: + `yyss': related to states. + `yyvs': related to semantic values. + + Refer to the stacks through separate pointers, to allow yyoverflow + to reallocate them elsewhere. */ + + /* The state stack. */ + yytype_int16 yyssa[YYINITDEPTH]; + yytype_int16 *yyss; + yytype_int16 *yyssp; + + /* The semantic value stack. */ + YYSTYPE yyvsa[YYINITDEPTH]; + YYSTYPE *yyvs; + YYSTYPE *yyvsp; + + YYSIZE_T yystacksize; + + int yyn; + int yyresult; + /* Lookahead token as an internal (translated) token number. */ + int yytoken; + /* The variables used to return semantic value and location from the + action routines. */ + YYSTYPE yyval; + +#if YYERROR_VERBOSE + /* Buffer for error messages, and its allocated size. */ + char yymsgbuf[128]; + char *yymsg = yymsgbuf; + YYSIZE_T yymsg_alloc = sizeof yymsgbuf; +#endif + +#define YYPOPSTACK(N) (yyvsp -= (N), yyssp -= (N)) + + /* The number of symbols on the RHS of the reduced rule. + Keep to zero when no symbol should be popped. */ + int yylen = 0; + + yytoken = 0; + yyss = yyssa; + yyvs = yyvsa; + yystacksize = YYINITDEPTH; + + YYDPRINTF ((stderr, "Starting parse\n")); + + yystate = 0; + yyerrstatus = 0; + yynerrs = 0; + yychar = YYEMPTY; /* Cause a token to be read. */ + + /* Initialize stack pointers. + Waste one element of value and location stack + so that they stay on the same level as the state stack. + The wasted elements are never initialized. */ + yyssp = yyss; + yyvsp = yyvs; + goto yysetstate; + +/*------------------------------------------------------------. +| yynewstate -- Push a new state, which is found in yystate. | +`------------------------------------------------------------*/ + yynewstate: + /* In all cases, when you get here, the value and location stacks + have just been pushed. So pushing a state here evens the stacks. */ + yyssp++; + + yysetstate: + *yyssp = yystate; + + if (yyss + yystacksize - 1 <= yyssp) + { + /* Get the current used size of the three stacks, in elements. */ + YYSIZE_T yysize = yyssp - yyss + 1; + +#ifdef yyoverflow + { + /* Give user a chance to reallocate the stack. Use copies of + these so that the &'s don't force the real ones into + memory. */ + YYSTYPE *yyvs1 = yyvs; + yytype_int16 *yyss1 = yyss; + + /* Each stack pointer address is followed by the size of the + data in use in that stack, in bytes. This used to be a + conditional around just the two extra args, but that might + be undefined if yyoverflow is a macro. */ + yyoverflow (YY_("memory exhausted"), + &yyss1, yysize * sizeof (*yyssp), + &yyvs1, yysize * sizeof (*yyvsp), + &yystacksize); + + yyss = yyss1; + yyvs = yyvs1; + } +#else /* no yyoverflow */ +# ifndef YYSTACK_RELOCATE + goto yyexhaustedlab; +# else + /* Extend the stack our own way. */ + if (YYMAXDEPTH <= yystacksize) + goto yyexhaustedlab; + yystacksize *= 2; + if (YYMAXDEPTH < yystacksize) + yystacksize = YYMAXDEPTH; + + { + yytype_int16 *yyss1 = yyss; + union yyalloc *yyptr = + (union yyalloc *) YYSTACK_ALLOC (YYSTACK_BYTES (yystacksize)); + if (! yyptr) + goto yyexhaustedlab; + YYSTACK_RELOCATE (yyss_alloc, yyss); + YYSTACK_RELOCATE (yyvs_alloc, yyvs); +# undef YYSTACK_RELOCATE + if (yyss1 != yyssa) + YYSTACK_FREE (yyss1); + } +# endif +#endif /* no yyoverflow */ + + yyssp = yyss + yysize - 1; + yyvsp = yyvs + yysize - 1; + + YYDPRINTF ((stderr, "Stack size increased to %lu\n", + (unsigned long int) yystacksize)); + + if (yyss + yystacksize - 1 <= yyssp) + YYABORT; + } + + YYDPRINTF ((stderr, "Entering state %d\n", yystate)); + + if (yystate == YYFINAL) + YYACCEPT; + + goto yybackup; + +/*-----------. +| yybackup. | +`-----------*/ +yybackup: + + /* Do appropriate processing given the current state. Read a + lookahead token if we need one and don't already have one. */ + + /* First try to decide what to do without reference to lookahead token. */ + yyn = yypact[yystate]; + if (yypact_value_is_default (yyn)) + goto yydefault; + + /* Not known => get a lookahead token if don't already have one. */ + + /* YYCHAR is either YYEMPTY or YYEOF or a valid lookahead symbol. */ + if (yychar == YYEMPTY) + { + YYDPRINTF ((stderr, "Reading a token: ")); + yychar = YYLEX; + } + + if (yychar <= YYEOF) + { + yychar = yytoken = YYEOF; + YYDPRINTF ((stderr, "Now at end of input.\n")); + } + else + { + yytoken = YYTRANSLATE (yychar); + YY_SYMBOL_PRINT ("Next token is", yytoken, &yylval, &yylloc); + } + + /* If the proper action on seeing token YYTOKEN is to reduce or to + detect an error, take that action. */ + yyn += yytoken; + if (yyn < 0 || YYLAST < yyn || yycheck[yyn] != yytoken) + goto yydefault; + yyn = yytable[yyn]; + if (yyn <= 0) + { + if (yytable_value_is_error (yyn)) + goto yyerrlab; + yyn = -yyn; + goto yyreduce; + } + + /* Count tokens shifted since error; after three, turn off error + status. */ + if (yyerrstatus) + yyerrstatus--; + + /* Shift the lookahead token. */ + YY_SYMBOL_PRINT ("Shifting", yytoken, &yylval, &yylloc); + + /* Discard the shifted token. */ + yychar = YYEMPTY; + + yystate = yyn; + *++yyvsp = yylval; + + goto yynewstate; + + +/*-----------------------------------------------------------. +| yydefault -- do the default action for the current state. | +`-----------------------------------------------------------*/ +yydefault: + yyn = yydefact[yystate]; + if (yyn == 0) + goto yyerrlab; + goto yyreduce; + + +/*-----------------------------. +| yyreduce -- Do a reduction. | +`-----------------------------*/ +yyreduce: + /* yyn is the number of a rule to reduce with. */ + yylen = yyr2[yyn]; + + /* If YYLEN is nonzero, implement the default value of the action: + `$$ = $1'. + + Otherwise, the following line sets YYVAL to garbage. + This behavior is undocumented and Bison + users should not rely upon it. Assigning to YYVAL + unconditionally makes the parser a bit smaller, and it avoids a + GCC warning that YYVAL may be used uninitialized. */ + yyval = yyvsp[1-yylen]; + + + YY_REDUCE_PRINT (yyn); + switch (yyn) + { + case 10: +/* Line 1787 of yacc.c */ +#line 129 "./util/configparser.y" + { + OUTYY(("\nP(server:)\n")); + } + break; + + case 117: +/* Line 1787 of yacc.c */ +#line 180 "./util/configparser.y" + { + struct config_stub* s; + OUTYY(("\nP(stub_zone:)\n")); + s = (struct config_stub*)calloc(1, sizeof(struct config_stub)); + if(s) { + s->next = cfg_parser->cfg->stubs; + cfg_parser->cfg->stubs = s; + } else + yyerror("out of memory"); + } + break; + + case 125: +/* Line 1787 of yacc.c */ +#line 196 "./util/configparser.y" + { + struct config_stub* s; + OUTYY(("\nP(forward_zone:)\n")); + s = (struct config_stub*)calloc(1, sizeof(struct config_stub)); + if(s) { + s->next = cfg_parser->cfg->forwards; + cfg_parser->cfg->forwards = s; + } else + yyerror("out of memory"); + } + break; + + case 132: +/* Line 1787 of yacc.c */ +#line 212 "./util/configparser.y" + { + OUTYY(("P(server_num_threads:%s)\n", (yyvsp[(2) - (2)].str))); + if(atoi((yyvsp[(2) - (2)].str)) == 0 && strcmp((yyvsp[(2) - (2)].str), "0") != 0) + yyerror("number expected"); + else cfg_parser->cfg->num_threads = atoi((yyvsp[(2) - (2)].str)); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 133: +/* Line 1787 of yacc.c */ +#line 221 "./util/configparser.y" + { + OUTYY(("P(server_verbosity:%s)\n", (yyvsp[(2) - (2)].str))); + if(atoi((yyvsp[(2) - (2)].str)) == 0 && strcmp((yyvsp[(2) - (2)].str), "0") != 0) + yyerror("number expected"); + else cfg_parser->cfg->verbosity = atoi((yyvsp[(2) - (2)].str)); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 134: +/* Line 1787 of yacc.c */ +#line 230 "./util/configparser.y" + { + OUTYY(("P(server_statistics_interval:%s)\n", (yyvsp[(2) - (2)].str))); + if(strcmp((yyvsp[(2) - (2)].str), "") == 0 || strcmp((yyvsp[(2) - (2)].str), "0") == 0) + cfg_parser->cfg->stat_interval = 0; + else if(atoi((yyvsp[(2) - (2)].str)) == 0) + yyerror("number expected"); + else cfg_parser->cfg->stat_interval = atoi((yyvsp[(2) - (2)].str)); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 135: +/* Line 1787 of yacc.c */ +#line 241 "./util/configparser.y" + { + OUTYY(("P(server_statistics_cumulative:%s)\n", (yyvsp[(2) - (2)].str))); + if(strcmp((yyvsp[(2) - (2)].str), "yes") != 0 && strcmp((yyvsp[(2) - (2)].str), "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->stat_cumulative = (strcmp((yyvsp[(2) - (2)].str), "yes")==0); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 136: +/* Line 1787 of yacc.c */ +#line 250 "./util/configparser.y" + { + OUTYY(("P(server_extended_statistics:%s)\n", (yyvsp[(2) - (2)].str))); + if(strcmp((yyvsp[(2) - (2)].str), "yes") != 0 && strcmp((yyvsp[(2) - (2)].str), "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->stat_extended = (strcmp((yyvsp[(2) - (2)].str), "yes")==0); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 137: +/* Line 1787 of yacc.c */ +#line 259 "./util/configparser.y" + { + OUTYY(("P(server_port:%s)\n", (yyvsp[(2) - (2)].str))); + if(atoi((yyvsp[(2) - (2)].str)) == 0) + yyerror("port number expected"); + else cfg_parser->cfg->port = atoi((yyvsp[(2) - (2)].str)); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 138: +/* Line 1787 of yacc.c */ +#line 268 "./util/configparser.y" + { + OUTYY(("P(server_interface:%s)\n", (yyvsp[(2) - (2)].str))); + if(cfg_parser->cfg->num_ifs == 0) + cfg_parser->cfg->ifs = calloc(1, sizeof(char*)); + else cfg_parser->cfg->ifs = realloc(cfg_parser->cfg->ifs, + (cfg_parser->cfg->num_ifs+1)*sizeof(char*)); + if(!cfg_parser->cfg->ifs) + yyerror("out of memory"); + else + cfg_parser->cfg->ifs[cfg_parser->cfg->num_ifs++] = (yyvsp[(2) - (2)].str); + } + break; + + case 139: +/* Line 1787 of yacc.c */ +#line 281 "./util/configparser.y" + { + OUTYY(("P(server_outgoing_interface:%s)\n", (yyvsp[(2) - (2)].str))); + if(cfg_parser->cfg->num_out_ifs == 0) + cfg_parser->cfg->out_ifs = calloc(1, sizeof(char*)); + else cfg_parser->cfg->out_ifs = realloc( + cfg_parser->cfg->out_ifs, + (cfg_parser->cfg->num_out_ifs+1)*sizeof(char*)); + if(!cfg_parser->cfg->out_ifs) + yyerror("out of memory"); + else + cfg_parser->cfg->out_ifs[ + cfg_parser->cfg->num_out_ifs++] = (yyvsp[(2) - (2)].str); + } + break; + + case 140: +/* Line 1787 of yacc.c */ +#line 296 "./util/configparser.y" + { + OUTYY(("P(server_outgoing_range:%s)\n", (yyvsp[(2) - (2)].str))); + if(atoi((yyvsp[(2) - (2)].str)) == 0) + yyerror("number expected"); + else cfg_parser->cfg->outgoing_num_ports = atoi((yyvsp[(2) - (2)].str)); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 141: +/* Line 1787 of yacc.c */ +#line 305 "./util/configparser.y" + { + OUTYY(("P(server_outgoing_port_permit:%s)\n", (yyvsp[(2) - (2)].str))); + if(!cfg_mark_ports((yyvsp[(2) - (2)].str), 1, + cfg_parser->cfg->outgoing_avail_ports, 65536)) + yyerror("port number or range (\"low-high\") expected"); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 142: +/* Line 1787 of yacc.c */ +#line 314 "./util/configparser.y" + { + OUTYY(("P(server_outgoing_port_avoid:%s)\n", (yyvsp[(2) - (2)].str))); + if(!cfg_mark_ports((yyvsp[(2) - (2)].str), 0, + cfg_parser->cfg->outgoing_avail_ports, 65536)) + yyerror("port number or range (\"low-high\") expected"); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 143: +/* Line 1787 of yacc.c */ +#line 323 "./util/configparser.y" + { + OUTYY(("P(server_outgoing_num_tcp:%s)\n", (yyvsp[(2) - (2)].str))); + if(atoi((yyvsp[(2) - (2)].str)) == 0 && strcmp((yyvsp[(2) - (2)].str), "0") != 0) + yyerror("number expected"); + else cfg_parser->cfg->outgoing_num_tcp = atoi((yyvsp[(2) - (2)].str)); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 144: +/* Line 1787 of yacc.c */ +#line 332 "./util/configparser.y" + { + OUTYY(("P(server_incoming_num_tcp:%s)\n", (yyvsp[(2) - (2)].str))); + if(atoi((yyvsp[(2) - (2)].str)) == 0 && strcmp((yyvsp[(2) - (2)].str), "0") != 0) + yyerror("number expected"); + else cfg_parser->cfg->incoming_num_tcp = atoi((yyvsp[(2) - (2)].str)); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 145: +/* Line 1787 of yacc.c */ +#line 341 "./util/configparser.y" + { + OUTYY(("P(server_interface_automatic:%s)\n", (yyvsp[(2) - (2)].str))); + if(strcmp((yyvsp[(2) - (2)].str), "yes") != 0 && strcmp((yyvsp[(2) - (2)].str), "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->if_automatic = (strcmp((yyvsp[(2) - (2)].str), "yes")==0); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 146: +/* Line 1787 of yacc.c */ +#line 350 "./util/configparser.y" + { + OUTYY(("P(server_do_ip4:%s)\n", (yyvsp[(2) - (2)].str))); + if(strcmp((yyvsp[(2) - (2)].str), "yes") != 0 && strcmp((yyvsp[(2) - (2)].str), "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->do_ip4 = (strcmp((yyvsp[(2) - (2)].str), "yes")==0); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 147: +/* Line 1787 of yacc.c */ +#line 359 "./util/configparser.y" + { + OUTYY(("P(server_do_ip6:%s)\n", (yyvsp[(2) - (2)].str))); + if(strcmp((yyvsp[(2) - (2)].str), "yes") != 0 && strcmp((yyvsp[(2) - (2)].str), "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->do_ip6 = (strcmp((yyvsp[(2) - (2)].str), "yes")==0); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 148: +/* Line 1787 of yacc.c */ +#line 368 "./util/configparser.y" + { + OUTYY(("P(server_do_udp:%s)\n", (yyvsp[(2) - (2)].str))); + if(strcmp((yyvsp[(2) - (2)].str), "yes") != 0 && strcmp((yyvsp[(2) - (2)].str), "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->do_udp = (strcmp((yyvsp[(2) - (2)].str), "yes")==0); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 149: +/* Line 1787 of yacc.c */ +#line 377 "./util/configparser.y" + { + OUTYY(("P(server_do_tcp:%s)\n", (yyvsp[(2) - (2)].str))); + if(strcmp((yyvsp[(2) - (2)].str), "yes") != 0 && strcmp((yyvsp[(2) - (2)].str), "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->do_tcp = (strcmp((yyvsp[(2) - (2)].str), "yes")==0); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 150: +/* Line 1787 of yacc.c */ +#line 386 "./util/configparser.y" + { + OUTYY(("P(server_tcp_upstream:%s)\n", (yyvsp[(2) - (2)].str))); + if(strcmp((yyvsp[(2) - (2)].str), "yes") != 0 && strcmp((yyvsp[(2) - (2)].str), "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->tcp_upstream = (strcmp((yyvsp[(2) - (2)].str), "yes")==0); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 151: +/* Line 1787 of yacc.c */ +#line 395 "./util/configparser.y" + { + OUTYY(("P(server_ssl_upstream:%s)\n", (yyvsp[(2) - (2)].str))); + if(strcmp((yyvsp[(2) - (2)].str), "yes") != 0 && strcmp((yyvsp[(2) - (2)].str), "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->ssl_upstream = (strcmp((yyvsp[(2) - (2)].str), "yes")==0); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 152: +/* Line 1787 of yacc.c */ +#line 404 "./util/configparser.y" + { + OUTYY(("P(server_ssl_service_key:%s)\n", (yyvsp[(2) - (2)].str))); + free(cfg_parser->cfg->ssl_service_key); + cfg_parser->cfg->ssl_service_key = (yyvsp[(2) - (2)].str); + } + break; + + case 153: +/* Line 1787 of yacc.c */ +#line 411 "./util/configparser.y" + { + OUTYY(("P(server_ssl_service_pem:%s)\n", (yyvsp[(2) - (2)].str))); + free(cfg_parser->cfg->ssl_service_pem); + cfg_parser->cfg->ssl_service_pem = (yyvsp[(2) - (2)].str); + } + break; + + case 154: +/* Line 1787 of yacc.c */ +#line 418 "./util/configparser.y" + { + OUTYY(("P(server_ssl_port:%s)\n", (yyvsp[(2) - (2)].str))); + if(atoi((yyvsp[(2) - (2)].str)) == 0) + yyerror("port number expected"); + else cfg_parser->cfg->ssl_port = atoi((yyvsp[(2) - (2)].str)); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 155: +/* Line 1787 of yacc.c */ +#line 427 "./util/configparser.y" + { + OUTYY(("P(server_do_daemonize:%s)\n", (yyvsp[(2) - (2)].str))); + if(strcmp((yyvsp[(2) - (2)].str), "yes") != 0 && strcmp((yyvsp[(2) - (2)].str), "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->do_daemonize = (strcmp((yyvsp[(2) - (2)].str), "yes")==0); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 156: +/* Line 1787 of yacc.c */ +#line 436 "./util/configparser.y" + { + OUTYY(("P(server_use_syslog:%s)\n", (yyvsp[(2) - (2)].str))); + if(strcmp((yyvsp[(2) - (2)].str), "yes") != 0 && strcmp((yyvsp[(2) - (2)].str), "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->use_syslog = (strcmp((yyvsp[(2) - (2)].str), "yes")==0); +#if !defined(HAVE_SYSLOG_H) && !defined(UB_ON_WINDOWS) + if(strcmp((yyvsp[(2) - (2)].str), "yes") == 0) + yyerror("no syslog services are available. " + "(reconfigure and compile to add)"); +#endif + free((yyvsp[(2) - (2)].str)); + } + break; + + case 157: +/* Line 1787 of yacc.c */ +#line 450 "./util/configparser.y" + { + OUTYY(("P(server_log_time_ascii:%s)\n", (yyvsp[(2) - (2)].str))); + if(strcmp((yyvsp[(2) - (2)].str), "yes") != 0 && strcmp((yyvsp[(2) - (2)].str), "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->log_time_ascii = (strcmp((yyvsp[(2) - (2)].str), "yes")==0); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 158: +/* Line 1787 of yacc.c */ +#line 459 "./util/configparser.y" + { + OUTYY(("P(server_log_queries:%s)\n", (yyvsp[(2) - (2)].str))); + if(strcmp((yyvsp[(2) - (2)].str), "yes") != 0 && strcmp((yyvsp[(2) - (2)].str), "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->log_queries = (strcmp((yyvsp[(2) - (2)].str), "yes")==0); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 159: +/* Line 1787 of yacc.c */ +#line 468 "./util/configparser.y" + { + OUTYY(("P(server_chroot:%s)\n", (yyvsp[(2) - (2)].str))); + free(cfg_parser->cfg->chrootdir); + cfg_parser->cfg->chrootdir = (yyvsp[(2) - (2)].str); + } + break; + + case 160: +/* Line 1787 of yacc.c */ +#line 475 "./util/configparser.y" + { + OUTYY(("P(server_username:%s)\n", (yyvsp[(2) - (2)].str))); + free(cfg_parser->cfg->username); + cfg_parser->cfg->username = (yyvsp[(2) - (2)].str); + } + break; + + case 161: +/* Line 1787 of yacc.c */ +#line 482 "./util/configparser.y" + { + OUTYY(("P(server_directory:%s)\n", (yyvsp[(2) - (2)].str))); + free(cfg_parser->cfg->directory); + cfg_parser->cfg->directory = (yyvsp[(2) - (2)].str); + } + break; + + case 162: +/* Line 1787 of yacc.c */ +#line 489 "./util/configparser.y" + { + OUTYY(("P(server_logfile:%s)\n", (yyvsp[(2) - (2)].str))); + free(cfg_parser->cfg->logfile); + cfg_parser->cfg->logfile = (yyvsp[(2) - (2)].str); + cfg_parser->cfg->use_syslog = 0; + } + break; + + case 163: +/* Line 1787 of yacc.c */ +#line 497 "./util/configparser.y" + { + OUTYY(("P(server_pidfile:%s)\n", (yyvsp[(2) - (2)].str))); + free(cfg_parser->cfg->pidfile); + cfg_parser->cfg->pidfile = (yyvsp[(2) - (2)].str); + } + break; + + case 164: +/* Line 1787 of yacc.c */ +#line 504 "./util/configparser.y" + { + OUTYY(("P(server_root_hints:%s)\n", (yyvsp[(2) - (2)].str))); + if(!cfg_strlist_insert(&cfg_parser->cfg->root_hints, (yyvsp[(2) - (2)].str))) + yyerror("out of memory"); + } + break; + + case 165: +/* Line 1787 of yacc.c */ +#line 511 "./util/configparser.y" + { + OUTYY(("P(server_dlv_anchor_file:%s)\n", (yyvsp[(2) - (2)].str))); + free(cfg_parser->cfg->dlv_anchor_file); + cfg_parser->cfg->dlv_anchor_file = (yyvsp[(2) - (2)].str); + } + break; + + case 166: +/* Line 1787 of yacc.c */ +#line 518 "./util/configparser.y" + { + OUTYY(("P(server_dlv_anchor:%s)\n", (yyvsp[(2) - (2)].str))); + if(!cfg_strlist_insert(&cfg_parser->cfg->dlv_anchor_list, (yyvsp[(2) - (2)].str))) + yyerror("out of memory"); + } + break; + + case 167: +/* Line 1787 of yacc.c */ +#line 525 "./util/configparser.y" + { + OUTYY(("P(server_auto_trust_anchor_file:%s)\n", (yyvsp[(2) - (2)].str))); + if(!cfg_strlist_insert(&cfg_parser->cfg-> + auto_trust_anchor_file_list, (yyvsp[(2) - (2)].str))) + yyerror("out of memory"); + } + break; + + case 168: +/* Line 1787 of yacc.c */ +#line 533 "./util/configparser.y" + { + OUTYY(("P(server_trust_anchor_file:%s)\n", (yyvsp[(2) - (2)].str))); + if(!cfg_strlist_insert(&cfg_parser->cfg-> + trust_anchor_file_list, (yyvsp[(2) - (2)].str))) + yyerror("out of memory"); + } + break; + + case 169: +/* Line 1787 of yacc.c */ +#line 541 "./util/configparser.y" + { + OUTYY(("P(server_trusted_keys_file:%s)\n", (yyvsp[(2) - (2)].str))); + if(!cfg_strlist_insert(&cfg_parser->cfg-> + trusted_keys_file_list, (yyvsp[(2) - (2)].str))) + yyerror("out of memory"); + } + break; + + case 170: +/* Line 1787 of yacc.c */ +#line 549 "./util/configparser.y" + { + OUTYY(("P(server_trust_anchor:%s)\n", (yyvsp[(2) - (2)].str))); + if(!cfg_strlist_insert(&cfg_parser->cfg->trust_anchor_list, (yyvsp[(2) - (2)].str))) + yyerror("out of memory"); + } + break; + + case 171: +/* Line 1787 of yacc.c */ +#line 556 "./util/configparser.y" + { + OUTYY(("P(server_domain_insecure:%s)\n", (yyvsp[(2) - (2)].str))); + if(!cfg_strlist_insert(&cfg_parser->cfg->domain_insecure, (yyvsp[(2) - (2)].str))) + yyerror("out of memory"); + } + break; + + case 172: +/* Line 1787 of yacc.c */ +#line 563 "./util/configparser.y" + { + OUTYY(("P(server_hide_identity:%s)\n", (yyvsp[(2) - (2)].str))); + if(strcmp((yyvsp[(2) - (2)].str), "yes") != 0 && strcmp((yyvsp[(2) - (2)].str), "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->hide_identity = (strcmp((yyvsp[(2) - (2)].str), "yes")==0); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 173: +/* Line 1787 of yacc.c */ +#line 572 "./util/configparser.y" + { + OUTYY(("P(server_hide_version:%s)\n", (yyvsp[(2) - (2)].str))); + if(strcmp((yyvsp[(2) - (2)].str), "yes") != 0 && strcmp((yyvsp[(2) - (2)].str), "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->hide_version = (strcmp((yyvsp[(2) - (2)].str), "yes")==0); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 174: +/* Line 1787 of yacc.c */ +#line 581 "./util/configparser.y" + { + OUTYY(("P(server_identity:%s)\n", (yyvsp[(2) - (2)].str))); + free(cfg_parser->cfg->identity); + cfg_parser->cfg->identity = (yyvsp[(2) - (2)].str); + } + break; + + case 175: +/* Line 1787 of yacc.c */ +#line 588 "./util/configparser.y" + { + OUTYY(("P(server_version:%s)\n", (yyvsp[(2) - (2)].str))); + free(cfg_parser->cfg->version); + cfg_parser->cfg->version = (yyvsp[(2) - (2)].str); + } + break; + + case 176: +/* Line 1787 of yacc.c */ +#line 595 "./util/configparser.y" + { + OUTYY(("P(server_so_rcvbuf:%s)\n", (yyvsp[(2) - (2)].str))); + if(!cfg_parse_memsize((yyvsp[(2) - (2)].str), &cfg_parser->cfg->so_rcvbuf)) + yyerror("buffer size expected"); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 177: +/* Line 1787 of yacc.c */ +#line 603 "./util/configparser.y" + { + OUTYY(("P(server_so_sndbuf:%s)\n", (yyvsp[(2) - (2)].str))); + if(!cfg_parse_memsize((yyvsp[(2) - (2)].str), &cfg_parser->cfg->so_sndbuf)) + yyerror("buffer size expected"); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 178: +/* Line 1787 of yacc.c */ +#line 611 "./util/configparser.y" + { + OUTYY(("P(server_so_reuseport:%s)\n", (yyvsp[(2) - (2)].str))); + if(strcmp((yyvsp[(2) - (2)].str), "yes") != 0 && strcmp((yyvsp[(2) - (2)].str), "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->so_reuseport = + (strcmp((yyvsp[(2) - (2)].str), "yes")==0); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 179: +/* Line 1787 of yacc.c */ +#line 621 "./util/configparser.y" + { + OUTYY(("P(server_edns_buffer_size:%s)\n", (yyvsp[(2) - (2)].str))); + if(atoi((yyvsp[(2) - (2)].str)) == 0) + yyerror("number expected"); + else if (atoi((yyvsp[(2) - (2)].str)) < 12) + yyerror("edns buffer size too small"); + else if (atoi((yyvsp[(2) - (2)].str)) > 65535) + cfg_parser->cfg->edns_buffer_size = 65535; + else cfg_parser->cfg->edns_buffer_size = atoi((yyvsp[(2) - (2)].str)); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 180: +/* Line 1787 of yacc.c */ +#line 634 "./util/configparser.y" + { + OUTYY(("P(server_msg_buffer_size:%s)\n", (yyvsp[(2) - (2)].str))); + if(atoi((yyvsp[(2) - (2)].str)) == 0) + yyerror("number expected"); + else if (atoi((yyvsp[(2) - (2)].str)) < 4096) + yyerror("message buffer size too small (use 4096)"); + else cfg_parser->cfg->msg_buffer_size = atoi((yyvsp[(2) - (2)].str)); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 181: +/* Line 1787 of yacc.c */ +#line 645 "./util/configparser.y" + { + OUTYY(("P(server_msg_cache_size:%s)\n", (yyvsp[(2) - (2)].str))); + if(!cfg_parse_memsize((yyvsp[(2) - (2)].str), &cfg_parser->cfg->msg_cache_size)) + yyerror("memory size expected"); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 182: +/* Line 1787 of yacc.c */ +#line 653 "./util/configparser.y" + { + OUTYY(("P(server_msg_cache_slabs:%s)\n", (yyvsp[(2) - (2)].str))); + if(atoi((yyvsp[(2) - (2)].str)) == 0) + yyerror("number expected"); + else { + cfg_parser->cfg->msg_cache_slabs = atoi((yyvsp[(2) - (2)].str)); + if(!is_pow2(cfg_parser->cfg->msg_cache_slabs)) + yyerror("must be a power of 2"); + } + free((yyvsp[(2) - (2)].str)); + } + break; + + case 183: +/* Line 1787 of yacc.c */ +#line 666 "./util/configparser.y" + { + OUTYY(("P(server_num_queries_per_thread:%s)\n", (yyvsp[(2) - (2)].str))); + if(atoi((yyvsp[(2) - (2)].str)) == 0) + yyerror("number expected"); + else cfg_parser->cfg->num_queries_per_thread = atoi((yyvsp[(2) - (2)].str)); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 184: +/* Line 1787 of yacc.c */ +#line 675 "./util/configparser.y" + { + OUTYY(("P(server_jostle_timeout:%s)\n", (yyvsp[(2) - (2)].str))); + if(atoi((yyvsp[(2) - (2)].str)) == 0 && strcmp((yyvsp[(2) - (2)].str), "0") != 0) + yyerror("number expected"); + else cfg_parser->cfg->jostle_time = atoi((yyvsp[(2) - (2)].str)); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 185: +/* Line 1787 of yacc.c */ +#line 684 "./util/configparser.y" + { + OUTYY(("P(server_delay_close:%s)\n", (yyvsp[(2) - (2)].str))); + if(atoi((yyvsp[(2) - (2)].str)) == 0 && strcmp((yyvsp[(2) - (2)].str), "0") != 0) + yyerror("number expected"); + else cfg_parser->cfg->delay_close = atoi((yyvsp[(2) - (2)].str)); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 186: +/* Line 1787 of yacc.c */ +#line 693 "./util/configparser.y" + { + OUTYY(("P(server_unblock_lan_zones:%s)\n", (yyvsp[(2) - (2)].str))); + if(strcmp((yyvsp[(2) - (2)].str), "yes") != 0 && strcmp((yyvsp[(2) - (2)].str), "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->unblock_lan_zones = + (strcmp((yyvsp[(2) - (2)].str), "yes")==0); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 187: +/* Line 1787 of yacc.c */ +#line 703 "./util/configparser.y" + { + OUTYY(("P(server_rrset_cache_size:%s)\n", (yyvsp[(2) - (2)].str))); + if(!cfg_parse_memsize((yyvsp[(2) - (2)].str), &cfg_parser->cfg->rrset_cache_size)) + yyerror("memory size expected"); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 188: +/* Line 1787 of yacc.c */ +#line 711 "./util/configparser.y" + { + OUTYY(("P(server_rrset_cache_slabs:%s)\n", (yyvsp[(2) - (2)].str))); + if(atoi((yyvsp[(2) - (2)].str)) == 0) + yyerror("number expected"); + else { + cfg_parser->cfg->rrset_cache_slabs = atoi((yyvsp[(2) - (2)].str)); + if(!is_pow2(cfg_parser->cfg->rrset_cache_slabs)) + yyerror("must be a power of 2"); + } + free((yyvsp[(2) - (2)].str)); + } + break; + + case 189: +/* Line 1787 of yacc.c */ +#line 724 "./util/configparser.y" + { + OUTYY(("P(server_infra_host_ttl:%s)\n", (yyvsp[(2) - (2)].str))); + if(atoi((yyvsp[(2) - (2)].str)) == 0 && strcmp((yyvsp[(2) - (2)].str), "0") != 0) + yyerror("number expected"); + else cfg_parser->cfg->host_ttl = atoi((yyvsp[(2) - (2)].str)); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 190: +/* Line 1787 of yacc.c */ +#line 733 "./util/configparser.y" + { + OUTYY(("P(server_infra_lame_ttl:%s)\n", (yyvsp[(2) - (2)].str))); + verbose(VERB_DETAIL, "ignored infra-lame-ttl: %s (option " + "removed, use infra-host-ttl)", (yyvsp[(2) - (2)].str)); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 191: +/* Line 1787 of yacc.c */ +#line 741 "./util/configparser.y" + { + OUTYY(("P(server_infra_cache_numhosts:%s)\n", (yyvsp[(2) - (2)].str))); + if(atoi((yyvsp[(2) - (2)].str)) == 0) + yyerror("number expected"); + else cfg_parser->cfg->infra_cache_numhosts = atoi((yyvsp[(2) - (2)].str)); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 192: +/* Line 1787 of yacc.c */ +#line 750 "./util/configparser.y" + { + OUTYY(("P(server_infra_cache_lame_size:%s)\n", (yyvsp[(2) - (2)].str))); + verbose(VERB_DETAIL, "ignored infra-cache-lame-size: %s " + "(option removed, use infra-cache-numhosts)", (yyvsp[(2) - (2)].str)); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 193: +/* Line 1787 of yacc.c */ +#line 758 "./util/configparser.y" + { + OUTYY(("P(server_infra_cache_slabs:%s)\n", (yyvsp[(2) - (2)].str))); + if(atoi((yyvsp[(2) - (2)].str)) == 0) + yyerror("number expected"); + else { + cfg_parser->cfg->infra_cache_slabs = atoi((yyvsp[(2) - (2)].str)); + if(!is_pow2(cfg_parser->cfg->infra_cache_slabs)) + yyerror("must be a power of 2"); + } + free((yyvsp[(2) - (2)].str)); + } + break; + + case 194: +/* Line 1787 of yacc.c */ +#line 771 "./util/configparser.y" + { + OUTYY(("P(server_target_fetch_policy:%s)\n", (yyvsp[(2) - (2)].str))); + free(cfg_parser->cfg->target_fetch_policy); + cfg_parser->cfg->target_fetch_policy = (yyvsp[(2) - (2)].str); + } + break; + + case 195: +/* Line 1787 of yacc.c */ +#line 778 "./util/configparser.y" + { + OUTYY(("P(server_harden_short_bufsize:%s)\n", (yyvsp[(2) - (2)].str))); + if(strcmp((yyvsp[(2) - (2)].str), "yes") != 0 && strcmp((yyvsp[(2) - (2)].str), "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->harden_short_bufsize = + (strcmp((yyvsp[(2) - (2)].str), "yes")==0); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 196: +/* Line 1787 of yacc.c */ +#line 788 "./util/configparser.y" + { + OUTYY(("P(server_harden_large_queries:%s)\n", (yyvsp[(2) - (2)].str))); + if(strcmp((yyvsp[(2) - (2)].str), "yes") != 0 && strcmp((yyvsp[(2) - (2)].str), "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->harden_large_queries = + (strcmp((yyvsp[(2) - (2)].str), "yes")==0); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 197: +/* Line 1787 of yacc.c */ +#line 798 "./util/configparser.y" + { + OUTYY(("P(server_harden_glue:%s)\n", (yyvsp[(2) - (2)].str))); + if(strcmp((yyvsp[(2) - (2)].str), "yes") != 0 && strcmp((yyvsp[(2) - (2)].str), "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->harden_glue = + (strcmp((yyvsp[(2) - (2)].str), "yes")==0); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 198: +/* Line 1787 of yacc.c */ +#line 808 "./util/configparser.y" + { + OUTYY(("P(server_harden_dnssec_stripped:%s)\n", (yyvsp[(2) - (2)].str))); + if(strcmp((yyvsp[(2) - (2)].str), "yes") != 0 && strcmp((yyvsp[(2) - (2)].str), "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->harden_dnssec_stripped = + (strcmp((yyvsp[(2) - (2)].str), "yes")==0); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 199: +/* Line 1787 of yacc.c */ +#line 818 "./util/configparser.y" + { + OUTYY(("P(server_harden_below_nxdomain:%s)\n", (yyvsp[(2) - (2)].str))); + if(strcmp((yyvsp[(2) - (2)].str), "yes") != 0 && strcmp((yyvsp[(2) - (2)].str), "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->harden_below_nxdomain = + (strcmp((yyvsp[(2) - (2)].str), "yes")==0); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 200: +/* Line 1787 of yacc.c */ +#line 828 "./util/configparser.y" + { + OUTYY(("P(server_harden_referral_path:%s)\n", (yyvsp[(2) - (2)].str))); + if(strcmp((yyvsp[(2) - (2)].str), "yes") != 0 && strcmp((yyvsp[(2) - (2)].str), "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->harden_referral_path = + (strcmp((yyvsp[(2) - (2)].str), "yes")==0); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 201: +/* Line 1787 of yacc.c */ +#line 838 "./util/configparser.y" + { + OUTYY(("P(server_use_caps_for_id:%s)\n", (yyvsp[(2) - (2)].str))); + if(strcmp((yyvsp[(2) - (2)].str), "yes") != 0 && strcmp((yyvsp[(2) - (2)].str), "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->use_caps_bits_for_id = + (strcmp((yyvsp[(2) - (2)].str), "yes")==0); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 202: +/* Line 1787 of yacc.c */ +#line 848 "./util/configparser.y" + { + OUTYY(("P(server_private_address:%s)\n", (yyvsp[(2) - (2)].str))); + if(!cfg_strlist_insert(&cfg_parser->cfg->private_address, (yyvsp[(2) - (2)].str))) + yyerror("out of memory"); + } + break; + + case 203: +/* Line 1787 of yacc.c */ +#line 855 "./util/configparser.y" + { + OUTYY(("P(server_private_domain:%s)\n", (yyvsp[(2) - (2)].str))); + if(!cfg_strlist_insert(&cfg_parser->cfg->private_domain, (yyvsp[(2) - (2)].str))) + yyerror("out of memory"); + } + break; + + case 204: +/* Line 1787 of yacc.c */ +#line 862 "./util/configparser.y" + { + OUTYY(("P(server_prefetch:%s)\n", (yyvsp[(2) - (2)].str))); + if(strcmp((yyvsp[(2) - (2)].str), "yes") != 0 && strcmp((yyvsp[(2) - (2)].str), "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->prefetch = (strcmp((yyvsp[(2) - (2)].str), "yes")==0); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 205: +/* Line 1787 of yacc.c */ +#line 871 "./util/configparser.y" + { + OUTYY(("P(server_prefetch_key:%s)\n", (yyvsp[(2) - (2)].str))); + if(strcmp((yyvsp[(2) - (2)].str), "yes") != 0 && strcmp((yyvsp[(2) - (2)].str), "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->prefetch_key = (strcmp((yyvsp[(2) - (2)].str), "yes")==0); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 206: +/* Line 1787 of yacc.c */ +#line 880 "./util/configparser.y" + { + OUTYY(("P(server_unwanted_reply_threshold:%s)\n", (yyvsp[(2) - (2)].str))); + if(atoi((yyvsp[(2) - (2)].str)) == 0 && strcmp((yyvsp[(2) - (2)].str), "0") != 0) + yyerror("number expected"); + else cfg_parser->cfg->unwanted_threshold = atoi((yyvsp[(2) - (2)].str)); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 207: +/* Line 1787 of yacc.c */ +#line 889 "./util/configparser.y" + { + OUTYY(("P(server_do_not_query_address:%s)\n", (yyvsp[(2) - (2)].str))); + if(!cfg_strlist_insert(&cfg_parser->cfg->donotqueryaddrs, (yyvsp[(2) - (2)].str))) + yyerror("out of memory"); + } + break; + + case 208: +/* Line 1787 of yacc.c */ +#line 896 "./util/configparser.y" + { + OUTYY(("P(server_do_not_query_localhost:%s)\n", (yyvsp[(2) - (2)].str))); + if(strcmp((yyvsp[(2) - (2)].str), "yes") != 0 && strcmp((yyvsp[(2) - (2)].str), "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->donotquery_localhost = + (strcmp((yyvsp[(2) - (2)].str), "yes")==0); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 209: +/* Line 1787 of yacc.c */ +#line 906 "./util/configparser.y" + { + OUTYY(("P(server_access_control:%s %s)\n", (yyvsp[(2) - (3)].str), (yyvsp[(3) - (3)].str))); + if(strcmp((yyvsp[(3) - (3)].str), "deny")!=0 && strcmp((yyvsp[(3) - (3)].str), "refuse")!=0 && + strcmp((yyvsp[(3) - (3)].str), "deny_non_local")!=0 && + strcmp((yyvsp[(3) - (3)].str), "refuse_non_local")!=0 && + strcmp((yyvsp[(3) - (3)].str), "allow")!=0 && + strcmp((yyvsp[(3) - (3)].str), "allow_snoop")!=0) { + yyerror("expected deny, refuse, deny_non_local, " + "refuse_non_local, allow or allow_snoop " + "in access control action"); + } else { + if(!cfg_str2list_insert(&cfg_parser->cfg->acls, (yyvsp[(2) - (3)].str), (yyvsp[(3) - (3)].str))) + fatal_exit("out of memory adding acl"); + } + } + break; + + case 210: +/* Line 1787 of yacc.c */ +#line 923 "./util/configparser.y" + { + OUTYY(("P(server_module_conf:%s)\n", (yyvsp[(2) - (2)].str))); + free(cfg_parser->cfg->module_conf); + cfg_parser->cfg->module_conf = (yyvsp[(2) - (2)].str); + } + break; + + case 211: +/* Line 1787 of yacc.c */ +#line 930 "./util/configparser.y" + { + OUTYY(("P(server_val_override_date:%s)\n", (yyvsp[(2) - (2)].str))); + if(strlen((yyvsp[(2) - (2)].str)) == 0 || strcmp((yyvsp[(2) - (2)].str), "0") == 0) { + cfg_parser->cfg->val_date_override = 0; + } else if(strlen((yyvsp[(2) - (2)].str)) == 14) { + cfg_parser->cfg->val_date_override = + cfg_convert_timeval((yyvsp[(2) - (2)].str)); + if(!cfg_parser->cfg->val_date_override) + yyerror("bad date/time specification"); + } else { + if(atoi((yyvsp[(2) - (2)].str)) == 0) + yyerror("number expected"); + cfg_parser->cfg->val_date_override = atoi((yyvsp[(2) - (2)].str)); + } + free((yyvsp[(2) - (2)].str)); + } + break; + + case 212: +/* Line 1787 of yacc.c */ +#line 948 "./util/configparser.y" + { + OUTYY(("P(server_val_sig_skew_min:%s)\n", (yyvsp[(2) - (2)].str))); + if(strlen((yyvsp[(2) - (2)].str)) == 0 || strcmp((yyvsp[(2) - (2)].str), "0") == 0) { + cfg_parser->cfg->val_sig_skew_min = 0; + } else { + cfg_parser->cfg->val_sig_skew_min = atoi((yyvsp[(2) - (2)].str)); + if(!cfg_parser->cfg->val_sig_skew_min) + yyerror("number expected"); + } + free((yyvsp[(2) - (2)].str)); + } + break; + + case 213: +/* Line 1787 of yacc.c */ +#line 961 "./util/configparser.y" + { + OUTYY(("P(server_val_sig_skew_max:%s)\n", (yyvsp[(2) - (2)].str))); + if(strlen((yyvsp[(2) - (2)].str)) == 0 || strcmp((yyvsp[(2) - (2)].str), "0") == 0) { + cfg_parser->cfg->val_sig_skew_max = 0; + } else { + cfg_parser->cfg->val_sig_skew_max = atoi((yyvsp[(2) - (2)].str)); + if(!cfg_parser->cfg->val_sig_skew_max) + yyerror("number expected"); + } + free((yyvsp[(2) - (2)].str)); + } + break; + + case 214: +/* Line 1787 of yacc.c */ +#line 974 "./util/configparser.y" + { + OUTYY(("P(server_cache_max_ttl:%s)\n", (yyvsp[(2) - (2)].str))); + if(atoi((yyvsp[(2) - (2)].str)) == 0 && strcmp((yyvsp[(2) - (2)].str), "0") != 0) + yyerror("number expected"); + else cfg_parser->cfg->max_ttl = atoi((yyvsp[(2) - (2)].str)); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 215: +/* Line 1787 of yacc.c */ +#line 983 "./util/configparser.y" + { + OUTYY(("P(server_cache_min_ttl:%s)\n", (yyvsp[(2) - (2)].str))); + if(atoi((yyvsp[(2) - (2)].str)) == 0 && strcmp((yyvsp[(2) - (2)].str), "0") != 0) + yyerror("number expected"); + else cfg_parser->cfg->min_ttl = atoi((yyvsp[(2) - (2)].str)); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 216: +/* Line 1787 of yacc.c */ +#line 992 "./util/configparser.y" + { + OUTYY(("P(server_bogus_ttl:%s)\n", (yyvsp[(2) - (2)].str))); + if(atoi((yyvsp[(2) - (2)].str)) == 0 && strcmp((yyvsp[(2) - (2)].str), "0") != 0) + yyerror("number expected"); + else cfg_parser->cfg->bogus_ttl = atoi((yyvsp[(2) - (2)].str)); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 217: +/* Line 1787 of yacc.c */ +#line 1001 "./util/configparser.y" + { + OUTYY(("P(server_val_clean_additional:%s)\n", (yyvsp[(2) - (2)].str))); + if(strcmp((yyvsp[(2) - (2)].str), "yes") != 0 && strcmp((yyvsp[(2) - (2)].str), "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->val_clean_additional = + (strcmp((yyvsp[(2) - (2)].str), "yes")==0); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 218: +/* Line 1787 of yacc.c */ +#line 1011 "./util/configparser.y" + { + OUTYY(("P(server_val_permissive_mode:%s)\n", (yyvsp[(2) - (2)].str))); + if(strcmp((yyvsp[(2) - (2)].str), "yes") != 0 && strcmp((yyvsp[(2) - (2)].str), "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->val_permissive_mode = + (strcmp((yyvsp[(2) - (2)].str), "yes")==0); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 219: +/* Line 1787 of yacc.c */ +#line 1021 "./util/configparser.y" + { + OUTYY(("P(server_ignore_cd_flag:%s)\n", (yyvsp[(2) - (2)].str))); + if(strcmp((yyvsp[(2) - (2)].str), "yes") != 0 && strcmp((yyvsp[(2) - (2)].str), "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->ignore_cd = (strcmp((yyvsp[(2) - (2)].str), "yes")==0); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 220: +/* Line 1787 of yacc.c */ +#line 1030 "./util/configparser.y" + { + OUTYY(("P(server_val_log_level:%s)\n", (yyvsp[(2) - (2)].str))); + if(atoi((yyvsp[(2) - (2)].str)) == 0 && strcmp((yyvsp[(2) - (2)].str), "0") != 0) + yyerror("number expected"); + else cfg_parser->cfg->val_log_level = atoi((yyvsp[(2) - (2)].str)); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 221: +/* Line 1787 of yacc.c */ +#line 1039 "./util/configparser.y" + { + OUTYY(("P(server_val_nsec3_keysize_iterations:%s)\n", (yyvsp[(2) - (2)].str))); + free(cfg_parser->cfg->val_nsec3_key_iterations); + cfg_parser->cfg->val_nsec3_key_iterations = (yyvsp[(2) - (2)].str); + } + break; + + case 222: +/* Line 1787 of yacc.c */ +#line 1046 "./util/configparser.y" + { + OUTYY(("P(server_add_holddown:%s)\n", (yyvsp[(2) - (2)].str))); + if(atoi((yyvsp[(2) - (2)].str)) == 0 && strcmp((yyvsp[(2) - (2)].str), "0") != 0) + yyerror("number expected"); + else cfg_parser->cfg->add_holddown = atoi((yyvsp[(2) - (2)].str)); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 223: +/* Line 1787 of yacc.c */ +#line 1055 "./util/configparser.y" + { + OUTYY(("P(server_del_holddown:%s)\n", (yyvsp[(2) - (2)].str))); + if(atoi((yyvsp[(2) - (2)].str)) == 0 && strcmp((yyvsp[(2) - (2)].str), "0") != 0) + yyerror("number expected"); + else cfg_parser->cfg->del_holddown = atoi((yyvsp[(2) - (2)].str)); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 224: +/* Line 1787 of yacc.c */ +#line 1064 "./util/configparser.y" + { + OUTYY(("P(server_keep_missing:%s)\n", (yyvsp[(2) - (2)].str))); + if(atoi((yyvsp[(2) - (2)].str)) == 0 && strcmp((yyvsp[(2) - (2)].str), "0") != 0) + yyerror("number expected"); + else cfg_parser->cfg->keep_missing = atoi((yyvsp[(2) - (2)].str)); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 225: +/* Line 1787 of yacc.c */ +#line 1073 "./util/configparser.y" + { + OUTYY(("P(server_key_cache_size:%s)\n", (yyvsp[(2) - (2)].str))); + if(!cfg_parse_memsize((yyvsp[(2) - (2)].str), &cfg_parser->cfg->key_cache_size)) + yyerror("memory size expected"); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 226: +/* Line 1787 of yacc.c */ +#line 1081 "./util/configparser.y" + { + OUTYY(("P(server_key_cache_slabs:%s)\n", (yyvsp[(2) - (2)].str))); + if(atoi((yyvsp[(2) - (2)].str)) == 0) + yyerror("number expected"); + else { + cfg_parser->cfg->key_cache_slabs = atoi((yyvsp[(2) - (2)].str)); + if(!is_pow2(cfg_parser->cfg->key_cache_slabs)) + yyerror("must be a power of 2"); + } + free((yyvsp[(2) - (2)].str)); + } + break; + + case 227: +/* Line 1787 of yacc.c */ +#line 1094 "./util/configparser.y" + { + OUTYY(("P(server_neg_cache_size:%s)\n", (yyvsp[(2) - (2)].str))); + if(!cfg_parse_memsize((yyvsp[(2) - (2)].str), &cfg_parser->cfg->neg_cache_size)) + yyerror("memory size expected"); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 228: +/* Line 1787 of yacc.c */ +#line 1102 "./util/configparser.y" + { + OUTYY(("P(server_local_zone:%s %s)\n", (yyvsp[(2) - (3)].str), (yyvsp[(3) - (3)].str))); + if(strcmp((yyvsp[(3) - (3)].str), "static")!=0 && strcmp((yyvsp[(3) - (3)].str), "deny")!=0 && + strcmp((yyvsp[(3) - (3)].str), "refuse")!=0 && strcmp((yyvsp[(3) - (3)].str), "redirect")!=0 && + strcmp((yyvsp[(3) - (3)].str), "transparent")!=0 && strcmp((yyvsp[(3) - (3)].str), "nodefault")!=0 + && strcmp((yyvsp[(3) - (3)].str), "typetransparent")!=0) + yyerror("local-zone type: expected static, deny, " + "refuse, redirect, transparent, " + "typetransparent or nodefault"); + else if(strcmp((yyvsp[(3) - (3)].str), "nodefault")==0) { + if(!cfg_strlist_insert(&cfg_parser->cfg-> + local_zones_nodefault, (yyvsp[(2) - (3)].str))) + fatal_exit("out of memory adding local-zone"); + free((yyvsp[(3) - (3)].str)); + } else { + if(!cfg_str2list_insert(&cfg_parser->cfg->local_zones, + (yyvsp[(2) - (3)].str), (yyvsp[(3) - (3)].str))) + fatal_exit("out of memory adding local-zone"); + } + } + break; + + case 229: +/* Line 1787 of yacc.c */ +#line 1124 "./util/configparser.y" + { + OUTYY(("P(server_local_data:%s)\n", (yyvsp[(2) - (2)].str))); + if(!cfg_strlist_insert(&cfg_parser->cfg->local_data, (yyvsp[(2) - (2)].str))) + fatal_exit("out of memory adding local-data"); + } + break; + + case 230: +/* Line 1787 of yacc.c */ +#line 1131 "./util/configparser.y" + { + char* ptr; + OUTYY(("P(server_local_data_ptr:%s)\n", (yyvsp[(2) - (2)].str))); + ptr = cfg_ptr_reverse((yyvsp[(2) - (2)].str)); + free((yyvsp[(2) - (2)].str)); + if(ptr) { + if(!cfg_strlist_insert(&cfg_parser->cfg-> + local_data, ptr)) + fatal_exit("out of memory adding local-data"); + } else { + yyerror("local-data-ptr could not be reversed"); + } + } + break; + + case 231: +/* Line 1787 of yacc.c */ +#line 1146 "./util/configparser.y" + { + OUTYY(("P(server_minimal_responses:%s)\n", (yyvsp[(2) - (2)].str))); + if(strcmp((yyvsp[(2) - (2)].str), "yes") != 0 && strcmp((yyvsp[(2) - (2)].str), "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->minimal_responses = + (strcmp((yyvsp[(2) - (2)].str), "yes")==0); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 232: +/* Line 1787 of yacc.c */ +#line 1156 "./util/configparser.y" + { + OUTYY(("P(server_rrset_roundrobin:%s)\n", (yyvsp[(2) - (2)].str))); + if(strcmp((yyvsp[(2) - (2)].str), "yes") != 0 && strcmp((yyvsp[(2) - (2)].str), "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->rrset_roundrobin = + (strcmp((yyvsp[(2) - (2)].str), "yes")==0); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 233: +/* Line 1787 of yacc.c */ +#line 1166 "./util/configparser.y" + { + OUTYY(("P(server_max_udp_size:%s)\n", (yyvsp[(2) - (2)].str))); + cfg_parser->cfg->max_udp_size = atoi((yyvsp[(2) - (2)].str)); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 234: +/* Line 1787 of yacc.c */ +#line 1173 "./util/configparser.y" + { + OUTYY(("P(dns64_prefix:%s)\n", (yyvsp[(2) - (2)].str))); + free(cfg_parser->cfg->dns64_prefix); + cfg_parser->cfg->dns64_prefix = (yyvsp[(2) - (2)].str); + } + break; + + case 235: +/* Line 1787 of yacc.c */ +#line 1180 "./util/configparser.y" + { + OUTYY(("P(server_dns64_synthall:%s)\n", (yyvsp[(2) - (2)].str))); + if(strcmp((yyvsp[(2) - (2)].str), "yes") != 0 && strcmp((yyvsp[(2) - (2)].str), "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->dns64_synthall = (strcmp((yyvsp[(2) - (2)].str), "yes")==0); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 236: +/* Line 1787 of yacc.c */ +#line 1189 "./util/configparser.y" + { + OUTYY(("P(name:%s)\n", (yyvsp[(2) - (2)].str))); + if(cfg_parser->cfg->stubs->name) + yyerror("stub name override, there must be one name " + "for one stub-zone"); + free(cfg_parser->cfg->stubs->name); + cfg_parser->cfg->stubs->name = (yyvsp[(2) - (2)].str); + } + break; + + case 237: +/* Line 1787 of yacc.c */ +#line 1199 "./util/configparser.y" + { + OUTYY(("P(stub-host:%s)\n", (yyvsp[(2) - (2)].str))); + if(!cfg_strlist_insert(&cfg_parser->cfg->stubs->hosts, (yyvsp[(2) - (2)].str))) + yyerror("out of memory"); + } + break; + + case 238: +/* Line 1787 of yacc.c */ +#line 1206 "./util/configparser.y" + { + OUTYY(("P(stub-addr:%s)\n", (yyvsp[(2) - (2)].str))); + if(!cfg_strlist_insert(&cfg_parser->cfg->stubs->addrs, (yyvsp[(2) - (2)].str))) + yyerror("out of memory"); + } + break; + + case 239: +/* Line 1787 of yacc.c */ +#line 1213 "./util/configparser.y" + { + OUTYY(("P(stub-first:%s)\n", (yyvsp[(2) - (2)].str))); + if(strcmp((yyvsp[(2) - (2)].str), "yes") != 0 && strcmp((yyvsp[(2) - (2)].str), "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->stubs->isfirst=(strcmp((yyvsp[(2) - (2)].str), "yes")==0); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 240: +/* Line 1787 of yacc.c */ +#line 1222 "./util/configparser.y" + { + OUTYY(("P(stub-prime:%s)\n", (yyvsp[(2) - (2)].str))); + if(strcmp((yyvsp[(2) - (2)].str), "yes") != 0 && strcmp((yyvsp[(2) - (2)].str), "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->stubs->isprime = + (strcmp((yyvsp[(2) - (2)].str), "yes")==0); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 241: +/* Line 1787 of yacc.c */ +#line 1232 "./util/configparser.y" + { + OUTYY(("P(name:%s)\n", (yyvsp[(2) - (2)].str))); + if(cfg_parser->cfg->forwards->name) + yyerror("forward name override, there must be one " + "name for one forward-zone"); + free(cfg_parser->cfg->forwards->name); + cfg_parser->cfg->forwards->name = (yyvsp[(2) - (2)].str); + } + break; + + case 242: +/* Line 1787 of yacc.c */ +#line 1242 "./util/configparser.y" + { + OUTYY(("P(forward-host:%s)\n", (yyvsp[(2) - (2)].str))); + if(!cfg_strlist_insert(&cfg_parser->cfg->forwards->hosts, (yyvsp[(2) - (2)].str))) + yyerror("out of memory"); + } + break; + + case 243: +/* Line 1787 of yacc.c */ +#line 1249 "./util/configparser.y" + { + OUTYY(("P(forward-addr:%s)\n", (yyvsp[(2) - (2)].str))); + if(!cfg_strlist_insert(&cfg_parser->cfg->forwards->addrs, (yyvsp[(2) - (2)].str))) + yyerror("out of memory"); + } + break; + + case 244: +/* Line 1787 of yacc.c */ +#line 1256 "./util/configparser.y" + { + OUTYY(("P(forward-first:%s)\n", (yyvsp[(2) - (2)].str))); + if(strcmp((yyvsp[(2) - (2)].str), "yes") != 0 && strcmp((yyvsp[(2) - (2)].str), "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->forwards->isfirst=(strcmp((yyvsp[(2) - (2)].str), "yes")==0); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 245: +/* Line 1787 of yacc.c */ +#line 1265 "./util/configparser.y" + { + OUTYY(("\nP(remote-control:)\n")); + } + break; + + case 255: +/* Line 1787 of yacc.c */ +#line 1276 "./util/configparser.y" + { + OUTYY(("P(control_enable:%s)\n", (yyvsp[(2) - (2)].str))); + if(strcmp((yyvsp[(2) - (2)].str), "yes") != 0 && strcmp((yyvsp[(2) - (2)].str), "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->remote_control_enable = + (strcmp((yyvsp[(2) - (2)].str), "yes")==0); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 256: +/* Line 1787 of yacc.c */ +#line 1286 "./util/configparser.y" + { + OUTYY(("P(control_port:%s)\n", (yyvsp[(2) - (2)].str))); + if(atoi((yyvsp[(2) - (2)].str)) == 0) + yyerror("control port number expected"); + else cfg_parser->cfg->control_port = atoi((yyvsp[(2) - (2)].str)); + free((yyvsp[(2) - (2)].str)); + } + break; + + case 257: +/* Line 1787 of yacc.c */ +#line 1295 "./util/configparser.y" + { + OUTYY(("P(control_interface:%s)\n", (yyvsp[(2) - (2)].str))); + if(!cfg_strlist_insert(&cfg_parser->cfg->control_ifs, (yyvsp[(2) - (2)].str))) + yyerror("out of memory"); + } + break; + + case 258: +/* Line 1787 of yacc.c */ +#line 1302 "./util/configparser.y" + { + OUTYY(("P(rc_server_key_file:%s)\n", (yyvsp[(2) - (2)].str))); + free(cfg_parser->cfg->server_key_file); + cfg_parser->cfg->server_key_file = (yyvsp[(2) - (2)].str); + } + break; + + case 259: +/* Line 1787 of yacc.c */ +#line 1309 "./util/configparser.y" + { + OUTYY(("P(rc_server_cert_file:%s)\n", (yyvsp[(2) - (2)].str))); + free(cfg_parser->cfg->server_cert_file); + cfg_parser->cfg->server_cert_file = (yyvsp[(2) - (2)].str); + } + break; + + case 260: +/* Line 1787 of yacc.c */ +#line 1316 "./util/configparser.y" + { + OUTYY(("P(rc_control_key_file:%s)\n", (yyvsp[(2) - (2)].str))); + free(cfg_parser->cfg->control_key_file); + cfg_parser->cfg->control_key_file = (yyvsp[(2) - (2)].str); + } + break; + + case 261: +/* Line 1787 of yacc.c */ +#line 1323 "./util/configparser.y" + { + OUTYY(("P(rc_control_cert_file:%s)\n", (yyvsp[(2) - (2)].str))); + free(cfg_parser->cfg->control_cert_file); + cfg_parser->cfg->control_cert_file = (yyvsp[(2) - (2)].str); + } + break; + + case 262: +/* Line 1787 of yacc.c */ +#line 1330 "./util/configparser.y" + { + OUTYY(("\nP(dnstap:)\n")); + } + break; + + case 277: +/* Line 1787 of yacc.c */ +#line 1347 "./util/configparser.y" + { + OUTYY(("P(dt_dnstap_enable:%s)\n", (yyvsp[(2) - (2)].str))); + if(strcmp((yyvsp[(2) - (2)].str), "yes") != 0 && strcmp((yyvsp[(2) - (2)].str), "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->dnstap = (strcmp((yyvsp[(2) - (2)].str), "yes")==0); + } + break; + + case 278: +/* Line 1787 of yacc.c */ +#line 1355 "./util/configparser.y" + { + OUTYY(("P(dt_dnstap_socket_path:%s)\n", (yyvsp[(2) - (2)].str))); + free(cfg_parser->cfg->dnstap_socket_path); + cfg_parser->cfg->dnstap_socket_path = (yyvsp[(2) - (2)].str); + } + break; + + case 279: +/* Line 1787 of yacc.c */ +#line 1362 "./util/configparser.y" + { + OUTYY(("P(dt_dnstap_send_identity:%s)\n", (yyvsp[(2) - (2)].str))); + if(strcmp((yyvsp[(2) - (2)].str), "yes") != 0 && strcmp((yyvsp[(2) - (2)].str), "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->dnstap_send_identity = (strcmp((yyvsp[(2) - (2)].str), "yes")==0); + } + break; + + case 280: +/* Line 1787 of yacc.c */ +#line 1370 "./util/configparser.y" + { + OUTYY(("P(dt_dnstap_send_version:%s)\n", (yyvsp[(2) - (2)].str))); + if(strcmp((yyvsp[(2) - (2)].str), "yes") != 0 && strcmp((yyvsp[(2) - (2)].str), "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->dnstap_send_version = (strcmp((yyvsp[(2) - (2)].str), "yes")==0); + } + break; + + case 281: +/* Line 1787 of yacc.c */ +#line 1378 "./util/configparser.y" + { + OUTYY(("P(dt_dnstap_identity:%s)\n", (yyvsp[(2) - (2)].str))); + free(cfg_parser->cfg->dnstap_identity); + cfg_parser->cfg->dnstap_identity = (yyvsp[(2) - (2)].str); + } + break; + + case 282: +/* Line 1787 of yacc.c */ +#line 1385 "./util/configparser.y" + { + OUTYY(("P(dt_dnstap_version:%s)\n", (yyvsp[(2) - (2)].str))); + free(cfg_parser->cfg->dnstap_version); + cfg_parser->cfg->dnstap_version = (yyvsp[(2) - (2)].str); + } + break; + + case 283: +/* Line 1787 of yacc.c */ +#line 1392 "./util/configparser.y" + { + OUTYY(("P(dt_dnstap_log_resolver_query_messages:%s)\n", (yyvsp[(2) - (2)].str))); + if(strcmp((yyvsp[(2) - (2)].str), "yes") != 0 && strcmp((yyvsp[(2) - (2)].str), "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->dnstap_log_resolver_query_messages = + (strcmp((yyvsp[(2) - (2)].str), "yes")==0); + } + break; + + case 284: +/* Line 1787 of yacc.c */ +#line 1401 "./util/configparser.y" + { + OUTYY(("P(dt_dnstap_log_resolver_response_messages:%s)\n", (yyvsp[(2) - (2)].str))); + if(strcmp((yyvsp[(2) - (2)].str), "yes") != 0 && strcmp((yyvsp[(2) - (2)].str), "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->dnstap_log_resolver_response_messages = + (strcmp((yyvsp[(2) - (2)].str), "yes")==0); + } + break; + + case 285: +/* Line 1787 of yacc.c */ +#line 1410 "./util/configparser.y" + { + OUTYY(("P(dt_dnstap_log_client_query_messages:%s)\n", (yyvsp[(2) - (2)].str))); + if(strcmp((yyvsp[(2) - (2)].str), "yes") != 0 && strcmp((yyvsp[(2) - (2)].str), "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->dnstap_log_client_query_messages = + (strcmp((yyvsp[(2) - (2)].str), "yes")==0); + } + break; + + case 286: +/* Line 1787 of yacc.c */ +#line 1419 "./util/configparser.y" + { + OUTYY(("P(dt_dnstap_log_client_response_messages:%s)\n", (yyvsp[(2) - (2)].str))); + if(strcmp((yyvsp[(2) - (2)].str), "yes") != 0 && strcmp((yyvsp[(2) - (2)].str), "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->dnstap_log_client_response_messages = + (strcmp((yyvsp[(2) - (2)].str), "yes")==0); + } + break; + + case 287: +/* Line 1787 of yacc.c */ +#line 1428 "./util/configparser.y" + { + OUTYY(("P(dt_dnstap_log_forwarder_query_messages:%s)\n", (yyvsp[(2) - (2)].str))); + if(strcmp((yyvsp[(2) - (2)].str), "yes") != 0 && strcmp((yyvsp[(2) - (2)].str), "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->dnstap_log_forwarder_query_messages = + (strcmp((yyvsp[(2) - (2)].str), "yes")==0); + } + break; + + case 288: +/* Line 1787 of yacc.c */ +#line 1437 "./util/configparser.y" + { + OUTYY(("P(dt_dnstap_log_forwarder_response_messages:%s)\n", (yyvsp[(2) - (2)].str))); + if(strcmp((yyvsp[(2) - (2)].str), "yes") != 0 && strcmp((yyvsp[(2) - (2)].str), "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->dnstap_log_forwarder_response_messages = + (strcmp((yyvsp[(2) - (2)].str), "yes")==0); + } + break; + + case 289: +/* Line 1787 of yacc.c */ +#line 1446 "./util/configparser.y" + { + OUTYY(("\nP(python:)\n")); + } + break; + + case 293: +/* Line 1787 of yacc.c */ +#line 1455 "./util/configparser.y" + { + OUTYY(("P(python-script:%s)\n", (yyvsp[(2) - (2)].str))); + free(cfg_parser->cfg->python_script); + cfg_parser->cfg->python_script = (yyvsp[(2) - (2)].str); + } + break; + + +/* Line 1787 of yacc.c */ +#line 3876 "util/configparser.c" + default: break; + } + /* User semantic actions sometimes alter yychar, and that requires + that yytoken be updated with the new translation. We take the + approach of translating immediately before every use of yytoken. + One alternative is translating here after every semantic action, + but that translation would be missed if the semantic action invokes + YYABORT, YYACCEPT, or YYERROR immediately after altering yychar or + if it invokes YYBACKUP. In the case of YYABORT or YYACCEPT, an + incorrect destructor might then be invoked immediately. In the + case of YYERROR or YYBACKUP, subsequent parser actions might lead + to an incorrect destructor call or verbose syntax error message + before the lookahead is translated. */ + YY_SYMBOL_PRINT ("-> $$ =", yyr1[yyn], &yyval, &yyloc); + + YYPOPSTACK (yylen); + yylen = 0; + YY_STACK_PRINT (yyss, yyssp); + + *++yyvsp = yyval; + + /* Now `shift' the result of the reduction. Determine what state + that goes to, based on the state we popped back to and the rule + number reduced by. */ + + yyn = yyr1[yyn]; + + yystate = yypgoto[yyn - YYNTOKENS] + *yyssp; + if (0 <= yystate && yystate <= YYLAST && yycheck[yystate] == *yyssp) + yystate = yytable[yystate]; + else + yystate = yydefgoto[yyn - YYNTOKENS]; + + goto yynewstate; + + +/*------------------------------------. +| yyerrlab -- here on detecting error | +`------------------------------------*/ +yyerrlab: + /* Make sure we have latest lookahead translation. See comments at + user semantic actions for why this is necessary. */ + yytoken = yychar == YYEMPTY ? YYEMPTY : YYTRANSLATE (yychar); + + /* If not already recovering from an error, report this error. */ + if (!yyerrstatus) + { + ++yynerrs; +#if ! YYERROR_VERBOSE + yyerror (YY_("syntax error")); +#else +# define YYSYNTAX_ERROR yysyntax_error (&yymsg_alloc, &yymsg, \ + yyssp, yytoken) + { + char const *yymsgp = YY_("syntax error"); + int yysyntax_error_status; + yysyntax_error_status = YYSYNTAX_ERROR; + if (yysyntax_error_status == 0) + yymsgp = yymsg; + else if (yysyntax_error_status == 1) + { + if (yymsg != yymsgbuf) + YYSTACK_FREE (yymsg); + yymsg = (char *) YYSTACK_ALLOC (yymsg_alloc); + if (!yymsg) + { + yymsg = yymsgbuf; + yymsg_alloc = sizeof yymsgbuf; + yysyntax_error_status = 2; + } + else + { + yysyntax_error_status = YYSYNTAX_ERROR; + yymsgp = yymsg; + } + } + yyerror (yymsgp); + if (yysyntax_error_status == 2) + goto yyexhaustedlab; + } +# undef YYSYNTAX_ERROR +#endif + } + + + + if (yyerrstatus == 3) + { + /* If just tried and failed to reuse lookahead token after an + error, discard it. */ + + if (yychar <= YYEOF) + { + /* Return failure if at end of input. */ + if (yychar == YYEOF) + YYABORT; + } + else + { + yydestruct ("Error: discarding", + yytoken, &yylval); + yychar = YYEMPTY; + } + } + + /* Else will try to reuse lookahead token after shifting the error + token. */ + goto yyerrlab1; + + +/*---------------------------------------------------. +| yyerrorlab -- error raised explicitly by YYERROR. | +`---------------------------------------------------*/ +yyerrorlab: + + /* Pacify compilers like GCC when the user code never invokes + YYERROR and the label yyerrorlab therefore never appears in user + code. */ + if (/*CONSTCOND*/ 0) + goto yyerrorlab; + + /* Do not reclaim the symbols of the rule which action triggered + this YYERROR. */ + YYPOPSTACK (yylen); + yylen = 0; + YY_STACK_PRINT (yyss, yyssp); + yystate = *yyssp; + goto yyerrlab1; + + +/*-------------------------------------------------------------. +| yyerrlab1 -- common code for both syntax error and YYERROR. | +`-------------------------------------------------------------*/ +yyerrlab1: + yyerrstatus = 3; /* Each real token shifted decrements this. */ + + for (;;) + { + yyn = yypact[yystate]; + if (!yypact_value_is_default (yyn)) + { + yyn += YYTERROR; + if (0 <= yyn && yyn <= YYLAST && yycheck[yyn] == YYTERROR) + { + yyn = yytable[yyn]; + if (0 < yyn) + break; + } + } + + /* Pop the current state because it cannot handle the error token. */ + if (yyssp == yyss) + YYABORT; + + + yydestruct ("Error: popping", + yystos[yystate], yyvsp); + YYPOPSTACK (1); + yystate = *yyssp; + YY_STACK_PRINT (yyss, yyssp); + } + + *++yyvsp = yylval; + + + /* Shift the error token. */ + YY_SYMBOL_PRINT ("Shifting", yystos[yyn], yyvsp, yylsp); + + yystate = yyn; + goto yynewstate; + + +/*-------------------------------------. +| yyacceptlab -- YYACCEPT comes here. | +`-------------------------------------*/ +yyacceptlab: + yyresult = 0; + goto yyreturn; + +/*-----------------------------------. +| yyabortlab -- YYABORT comes here. | +`-----------------------------------*/ +yyabortlab: + yyresult = 1; + goto yyreturn; + +#if !defined yyoverflow || YYERROR_VERBOSE +/*-------------------------------------------------. +| yyexhaustedlab -- memory exhaustion comes here. | +`-------------------------------------------------*/ +yyexhaustedlab: + yyerror (YY_("memory exhausted")); + yyresult = 2; + /* Fall through. */ +#endif + +yyreturn: + if (yychar != YYEMPTY) + { + /* Make sure we have latest lookahead translation. See comments at + user semantic actions for why this is necessary. */ + yytoken = YYTRANSLATE (yychar); + yydestruct ("Cleanup: discarding lookahead", + yytoken, &yylval); + } + /* Do not reclaim the symbols of the rule which action triggered + this YYABORT or YYACCEPT. */ + YYPOPSTACK (yylen); + YY_STACK_PRINT (yyss, yyssp); + while (yyssp != yyss) + { + yydestruct ("Cleanup: popping", + yystos[*yyssp], yyvsp); + YYPOPSTACK (1); + } +#ifndef yyoverflow + if (yyss != yyssa) + YYSTACK_FREE (yyss); +#endif +#if YYERROR_VERBOSE + if (yymsg != yymsgbuf) + YYSTACK_FREE (yymsg); +#endif + /* Make sure YYID is used. */ + return YYID (yyresult); +} + + +/* Line 2048 of yacc.c */ +#line 1460 "./util/configparser.y" + + +/* parse helper routines could be here */ + diff --git a/external/unbound/util/configparser.h b/external/unbound/util/configparser.h new file mode 100644 index 000000000..b0e07227b --- /dev/null +++ b/external/unbound/util/configparser.h @@ -0,0 +1,380 @@ +/* A Bison parser, made by GNU Bison 2.6.1. */ + +/* Bison interface for Yacc-like parsers in C + + Copyright (C) 1984, 1989-1990, 2000-2012 Free Software Foundation, Inc. + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. */ + +/* As a special exception, you may create a larger work that contains + part or all of the Bison parser skeleton and distribute that work + under terms of your choice, so long as that work isn't itself a + parser generator using the skeleton or a modified version thereof + as a parser skeleton. Alternatively, if you modify or redistribute + the parser skeleton itself, you may (at your option) remove this + special exception, which will cause the skeleton and the resulting + Bison output files to be licensed under the GNU General Public + License without this special exception. + + This special exception was added by the Free Software Foundation in + version 2.2 of Bison. */ + +#ifndef YY_UTIL_CONFIGPARSER_H +# define YY_UTIL_CONFIGPARSER_H +/* Enabling traces. */ +#ifndef YYDEBUG +# define YYDEBUG 0 +#endif +#if YYDEBUG +extern int yydebug; +#endif + +/* Tokens. */ +#ifndef YYTOKENTYPE +# define YYTOKENTYPE + /* Put the tokens into the symbol table, so that GDB and other debuggers + know about them. */ + enum yytokentype { + SPACE = 258, + LETTER = 259, + NEWLINE = 260, + COMMENT = 261, + COLON = 262, + ANY = 263, + ZONESTR = 264, + STRING_ARG = 265, + VAR_SERVER = 266, + VAR_VERBOSITY = 267, + VAR_NUM_THREADS = 268, + VAR_PORT = 269, + VAR_OUTGOING_RANGE = 270, + VAR_INTERFACE = 271, + VAR_DO_IP4 = 272, + VAR_DO_IP6 = 273, + VAR_DO_UDP = 274, + VAR_DO_TCP = 275, + VAR_CHROOT = 276, + VAR_USERNAME = 277, + VAR_DIRECTORY = 278, + VAR_LOGFILE = 279, + VAR_PIDFILE = 280, + VAR_MSG_CACHE_SIZE = 281, + VAR_MSG_CACHE_SLABS = 282, + VAR_NUM_QUERIES_PER_THREAD = 283, + VAR_RRSET_CACHE_SIZE = 284, + VAR_RRSET_CACHE_SLABS = 285, + VAR_OUTGOING_NUM_TCP = 286, + VAR_INFRA_HOST_TTL = 287, + VAR_INFRA_LAME_TTL = 288, + VAR_INFRA_CACHE_SLABS = 289, + VAR_INFRA_CACHE_NUMHOSTS = 290, + VAR_INFRA_CACHE_LAME_SIZE = 291, + VAR_NAME = 292, + VAR_STUB_ZONE = 293, + VAR_STUB_HOST = 294, + VAR_STUB_ADDR = 295, + VAR_TARGET_FETCH_POLICY = 296, + VAR_HARDEN_SHORT_BUFSIZE = 297, + VAR_HARDEN_LARGE_QUERIES = 298, + VAR_FORWARD_ZONE = 299, + VAR_FORWARD_HOST = 300, + VAR_FORWARD_ADDR = 301, + VAR_DO_NOT_QUERY_ADDRESS = 302, + VAR_HIDE_IDENTITY = 303, + VAR_HIDE_VERSION = 304, + VAR_IDENTITY = 305, + VAR_VERSION = 306, + VAR_HARDEN_GLUE = 307, + VAR_MODULE_CONF = 308, + VAR_TRUST_ANCHOR_FILE = 309, + VAR_TRUST_ANCHOR = 310, + VAR_VAL_OVERRIDE_DATE = 311, + VAR_BOGUS_TTL = 312, + VAR_VAL_CLEAN_ADDITIONAL = 313, + VAR_VAL_PERMISSIVE_MODE = 314, + VAR_INCOMING_NUM_TCP = 315, + VAR_MSG_BUFFER_SIZE = 316, + VAR_KEY_CACHE_SIZE = 317, + VAR_KEY_CACHE_SLABS = 318, + VAR_TRUSTED_KEYS_FILE = 319, + VAR_VAL_NSEC3_KEYSIZE_ITERATIONS = 320, + VAR_USE_SYSLOG = 321, + VAR_OUTGOING_INTERFACE = 322, + VAR_ROOT_HINTS = 323, + VAR_DO_NOT_QUERY_LOCALHOST = 324, + VAR_CACHE_MAX_TTL = 325, + VAR_HARDEN_DNSSEC_STRIPPED = 326, + VAR_ACCESS_CONTROL = 327, + VAR_LOCAL_ZONE = 328, + VAR_LOCAL_DATA = 329, + VAR_INTERFACE_AUTOMATIC = 330, + VAR_STATISTICS_INTERVAL = 331, + VAR_DO_DAEMONIZE = 332, + VAR_USE_CAPS_FOR_ID = 333, + VAR_STATISTICS_CUMULATIVE = 334, + VAR_OUTGOING_PORT_PERMIT = 335, + VAR_OUTGOING_PORT_AVOID = 336, + VAR_DLV_ANCHOR_FILE = 337, + VAR_DLV_ANCHOR = 338, + VAR_NEG_CACHE_SIZE = 339, + VAR_HARDEN_REFERRAL_PATH = 340, + VAR_PRIVATE_ADDRESS = 341, + VAR_PRIVATE_DOMAIN = 342, + VAR_REMOTE_CONTROL = 343, + VAR_CONTROL_ENABLE = 344, + VAR_CONTROL_INTERFACE = 345, + VAR_CONTROL_PORT = 346, + VAR_SERVER_KEY_FILE = 347, + VAR_SERVER_CERT_FILE = 348, + VAR_CONTROL_KEY_FILE = 349, + VAR_CONTROL_CERT_FILE = 350, + VAR_EXTENDED_STATISTICS = 351, + VAR_LOCAL_DATA_PTR = 352, + VAR_JOSTLE_TIMEOUT = 353, + VAR_STUB_PRIME = 354, + VAR_UNWANTED_REPLY_THRESHOLD = 355, + VAR_LOG_TIME_ASCII = 356, + VAR_DOMAIN_INSECURE = 357, + VAR_PYTHON = 358, + VAR_PYTHON_SCRIPT = 359, + VAR_VAL_SIG_SKEW_MIN = 360, + VAR_VAL_SIG_SKEW_MAX = 361, + VAR_CACHE_MIN_TTL = 362, + VAR_VAL_LOG_LEVEL = 363, + VAR_AUTO_TRUST_ANCHOR_FILE = 364, + VAR_KEEP_MISSING = 365, + VAR_ADD_HOLDDOWN = 366, + VAR_DEL_HOLDDOWN = 367, + VAR_SO_RCVBUF = 368, + VAR_EDNS_BUFFER_SIZE = 369, + VAR_PREFETCH = 370, + VAR_PREFETCH_KEY = 371, + VAR_SO_SNDBUF = 372, + VAR_SO_REUSEPORT = 373, + VAR_HARDEN_BELOW_NXDOMAIN = 374, + VAR_IGNORE_CD_FLAG = 375, + VAR_LOG_QUERIES = 376, + VAR_TCP_UPSTREAM = 377, + VAR_SSL_UPSTREAM = 378, + VAR_SSL_SERVICE_KEY = 379, + VAR_SSL_SERVICE_PEM = 380, + VAR_SSL_PORT = 381, + VAR_FORWARD_FIRST = 382, + VAR_STUB_FIRST = 383, + VAR_MINIMAL_RESPONSES = 384, + VAR_RRSET_ROUNDROBIN = 385, + VAR_MAX_UDP_SIZE = 386, + VAR_DELAY_CLOSE = 387, + VAR_UNBLOCK_LAN_ZONES = 388, + VAR_DNS64_PREFIX = 389, + VAR_DNS64_SYNTHALL = 390, + VAR_DNSTAP = 391, + VAR_DNSTAP_ENABLE = 392, + VAR_DNSTAP_SOCKET_PATH = 393, + VAR_DNSTAP_SEND_IDENTITY = 394, + VAR_DNSTAP_SEND_VERSION = 395, + VAR_DNSTAP_IDENTITY = 396, + VAR_DNSTAP_VERSION = 397, + VAR_DNSTAP_LOG_RESOLVER_QUERY_MESSAGES = 398, + VAR_DNSTAP_LOG_RESOLVER_RESPONSE_MESSAGES = 399, + VAR_DNSTAP_LOG_CLIENT_QUERY_MESSAGES = 400, + VAR_DNSTAP_LOG_CLIENT_RESPONSE_MESSAGES = 401, + VAR_DNSTAP_LOG_FORWARDER_QUERY_MESSAGES = 402, + VAR_DNSTAP_LOG_FORWARDER_RESPONSE_MESSAGES = 403 + }; +#endif +/* Tokens. */ +#define SPACE 258 +#define LETTER 259 +#define NEWLINE 260 +#define COMMENT 261 +#define COLON 262 +#define ANY 263 +#define ZONESTR 264 +#define STRING_ARG 265 +#define VAR_SERVER 266 +#define VAR_VERBOSITY 267 +#define VAR_NUM_THREADS 268 +#define VAR_PORT 269 +#define VAR_OUTGOING_RANGE 270 +#define VAR_INTERFACE 271 +#define VAR_DO_IP4 272 +#define VAR_DO_IP6 273 +#define VAR_DO_UDP 274 +#define VAR_DO_TCP 275 +#define VAR_CHROOT 276 +#define VAR_USERNAME 277 +#define VAR_DIRECTORY 278 +#define VAR_LOGFILE 279 +#define VAR_PIDFILE 280 +#define VAR_MSG_CACHE_SIZE 281 +#define VAR_MSG_CACHE_SLABS 282 +#define VAR_NUM_QUERIES_PER_THREAD 283 +#define VAR_RRSET_CACHE_SIZE 284 +#define VAR_RRSET_CACHE_SLABS 285 +#define VAR_OUTGOING_NUM_TCP 286 +#define VAR_INFRA_HOST_TTL 287 +#define VAR_INFRA_LAME_TTL 288 +#define VAR_INFRA_CACHE_SLABS 289 +#define VAR_INFRA_CACHE_NUMHOSTS 290 +#define VAR_INFRA_CACHE_LAME_SIZE 291 +#define VAR_NAME 292 +#define VAR_STUB_ZONE 293 +#define VAR_STUB_HOST 294 +#define VAR_STUB_ADDR 295 +#define VAR_TARGET_FETCH_POLICY 296 +#define VAR_HARDEN_SHORT_BUFSIZE 297 +#define VAR_HARDEN_LARGE_QUERIES 298 +#define VAR_FORWARD_ZONE 299 +#define VAR_FORWARD_HOST 300 +#define VAR_FORWARD_ADDR 301 +#define VAR_DO_NOT_QUERY_ADDRESS 302 +#define VAR_HIDE_IDENTITY 303 +#define VAR_HIDE_VERSION 304 +#define VAR_IDENTITY 305 +#define VAR_VERSION 306 +#define VAR_HARDEN_GLUE 307 +#define VAR_MODULE_CONF 308 +#define VAR_TRUST_ANCHOR_FILE 309 +#define VAR_TRUST_ANCHOR 310 +#define VAR_VAL_OVERRIDE_DATE 311 +#define VAR_BOGUS_TTL 312 +#define VAR_VAL_CLEAN_ADDITIONAL 313 +#define VAR_VAL_PERMISSIVE_MODE 314 +#define VAR_INCOMING_NUM_TCP 315 +#define VAR_MSG_BUFFER_SIZE 316 +#define VAR_KEY_CACHE_SIZE 317 +#define VAR_KEY_CACHE_SLABS 318 +#define VAR_TRUSTED_KEYS_FILE 319 +#define VAR_VAL_NSEC3_KEYSIZE_ITERATIONS 320 +#define VAR_USE_SYSLOG 321 +#define VAR_OUTGOING_INTERFACE 322 +#define VAR_ROOT_HINTS 323 +#define VAR_DO_NOT_QUERY_LOCALHOST 324 +#define VAR_CACHE_MAX_TTL 325 +#define VAR_HARDEN_DNSSEC_STRIPPED 326 +#define VAR_ACCESS_CONTROL 327 +#define VAR_LOCAL_ZONE 328 +#define VAR_LOCAL_DATA 329 +#define VAR_INTERFACE_AUTOMATIC 330 +#define VAR_STATISTICS_INTERVAL 331 +#define VAR_DO_DAEMONIZE 332 +#define VAR_USE_CAPS_FOR_ID 333 +#define VAR_STATISTICS_CUMULATIVE 334 +#define VAR_OUTGOING_PORT_PERMIT 335 +#define VAR_OUTGOING_PORT_AVOID 336 +#define VAR_DLV_ANCHOR_FILE 337 +#define VAR_DLV_ANCHOR 338 +#define VAR_NEG_CACHE_SIZE 339 +#define VAR_HARDEN_REFERRAL_PATH 340 +#define VAR_PRIVATE_ADDRESS 341 +#define VAR_PRIVATE_DOMAIN 342 +#define VAR_REMOTE_CONTROL 343 +#define VAR_CONTROL_ENABLE 344 +#define VAR_CONTROL_INTERFACE 345 +#define VAR_CONTROL_PORT 346 +#define VAR_SERVER_KEY_FILE 347 +#define VAR_SERVER_CERT_FILE 348 +#define VAR_CONTROL_KEY_FILE 349 +#define VAR_CONTROL_CERT_FILE 350 +#define VAR_EXTENDED_STATISTICS 351 +#define VAR_LOCAL_DATA_PTR 352 +#define VAR_JOSTLE_TIMEOUT 353 +#define VAR_STUB_PRIME 354 +#define VAR_UNWANTED_REPLY_THRESHOLD 355 +#define VAR_LOG_TIME_ASCII 356 +#define VAR_DOMAIN_INSECURE 357 +#define VAR_PYTHON 358 +#define VAR_PYTHON_SCRIPT 359 +#define VAR_VAL_SIG_SKEW_MIN 360 +#define VAR_VAL_SIG_SKEW_MAX 361 +#define VAR_CACHE_MIN_TTL 362 +#define VAR_VAL_LOG_LEVEL 363 +#define VAR_AUTO_TRUST_ANCHOR_FILE 364 +#define VAR_KEEP_MISSING 365 +#define VAR_ADD_HOLDDOWN 366 +#define VAR_DEL_HOLDDOWN 367 +#define VAR_SO_RCVBUF 368 +#define VAR_EDNS_BUFFER_SIZE 369 +#define VAR_PREFETCH 370 +#define VAR_PREFETCH_KEY 371 +#define VAR_SO_SNDBUF 372 +#define VAR_SO_REUSEPORT 373 +#define VAR_HARDEN_BELOW_NXDOMAIN 374 +#define VAR_IGNORE_CD_FLAG 375 +#define VAR_LOG_QUERIES 376 +#define VAR_TCP_UPSTREAM 377 +#define VAR_SSL_UPSTREAM 378 +#define VAR_SSL_SERVICE_KEY 379 +#define VAR_SSL_SERVICE_PEM 380 +#define VAR_SSL_PORT 381 +#define VAR_FORWARD_FIRST 382 +#define VAR_STUB_FIRST 383 +#define VAR_MINIMAL_RESPONSES 384 +#define VAR_RRSET_ROUNDROBIN 385 +#define VAR_MAX_UDP_SIZE 386 +#define VAR_DELAY_CLOSE 387 +#define VAR_UNBLOCK_LAN_ZONES 388 +#define VAR_DNS64_PREFIX 389 +#define VAR_DNS64_SYNTHALL 390 +#define VAR_DNSTAP 391 +#define VAR_DNSTAP_ENABLE 392 +#define VAR_DNSTAP_SOCKET_PATH 393 +#define VAR_DNSTAP_SEND_IDENTITY 394 +#define VAR_DNSTAP_SEND_VERSION 395 +#define VAR_DNSTAP_IDENTITY 396 +#define VAR_DNSTAP_VERSION 397 +#define VAR_DNSTAP_LOG_RESOLVER_QUERY_MESSAGES 398 +#define VAR_DNSTAP_LOG_RESOLVER_RESPONSE_MESSAGES 399 +#define VAR_DNSTAP_LOG_CLIENT_QUERY_MESSAGES 400 +#define VAR_DNSTAP_LOG_CLIENT_RESPONSE_MESSAGES 401 +#define VAR_DNSTAP_LOG_FORWARDER_QUERY_MESSAGES 402 +#define VAR_DNSTAP_LOG_FORWARDER_RESPONSE_MESSAGES 403 + + + +#if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED +typedef union YYSTYPE +{ +/* Line 2049 of yacc.c */ +#line 64 "./util/configparser.y" + + char* str; + + +/* Line 2049 of yacc.c */ +#line 358 "util/configparser.h" +} YYSTYPE; +# define YYSTYPE_IS_TRIVIAL 1 +# define yystype YYSTYPE /* obsolescent; will be withdrawn */ +# define YYSTYPE_IS_DECLARED 1 +#endif + +extern YYSTYPE yylval; + +#ifdef YYPARSE_PARAM +#if defined __STDC__ || defined __cplusplus +int yyparse (void *YYPARSE_PARAM); +#else +int yyparse (); +#endif +#else /* ! YYPARSE_PARAM */ +#if defined __STDC__ || defined __cplusplus +int yyparse (void); +#else +int yyparse (); +#endif +#endif /* ! YYPARSE_PARAM */ + +#endif /* !YY_UTIL_CONFIGPARSER_H */ diff --git a/external/unbound/util/configparser.y b/external/unbound/util/configparser.y new file mode 100644 index 000000000..7a92d9ee7 --- /dev/null +++ b/external/unbound/util/configparser.y @@ -0,0 +1,1462 @@ +/* + * configparser.y -- yacc grammar for unbound configuration files + * + * Copyright (c) 2001-2006, NLnet Labs. All rights reserved. + * + * Copyright (c) 2007, NLnet Labs. All rights reserved. + * + * This software is open source. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * Neither the name of the NLNET LABS nor the names of its contributors may + * be used to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +%{ +#include "config.h" + +#include <stdarg.h> +#include <stdio.h> +#include <string.h> +#include <stdlib.h> +#include <assert.h> + +#include "util/configyyrename.h" +#include "util/config_file.h" +#include "util/net_help.h" + +int ub_c_lex(void); +void ub_c_error(const char *message); + +/* these need to be global, otherwise they cannot be used inside yacc */ +extern struct config_parser_state* cfg_parser; + +#if 0 +#define OUTYY(s) printf s /* used ONLY when debugging */ +#else +#define OUTYY(s) +#endif + +%} +%union { + char* str; +}; + +%token SPACE LETTER NEWLINE COMMENT COLON ANY ZONESTR +%token <str> STRING_ARG +%token VAR_SERVER VAR_VERBOSITY VAR_NUM_THREADS VAR_PORT +%token VAR_OUTGOING_RANGE VAR_INTERFACE +%token VAR_DO_IP4 VAR_DO_IP6 VAR_DO_UDP VAR_DO_TCP +%token VAR_CHROOT VAR_USERNAME VAR_DIRECTORY VAR_LOGFILE VAR_PIDFILE +%token VAR_MSG_CACHE_SIZE VAR_MSG_CACHE_SLABS VAR_NUM_QUERIES_PER_THREAD +%token VAR_RRSET_CACHE_SIZE VAR_RRSET_CACHE_SLABS VAR_OUTGOING_NUM_TCP +%token VAR_INFRA_HOST_TTL VAR_INFRA_LAME_TTL VAR_INFRA_CACHE_SLABS +%token VAR_INFRA_CACHE_NUMHOSTS VAR_INFRA_CACHE_LAME_SIZE VAR_NAME +%token VAR_STUB_ZONE VAR_STUB_HOST VAR_STUB_ADDR VAR_TARGET_FETCH_POLICY +%token VAR_HARDEN_SHORT_BUFSIZE VAR_HARDEN_LARGE_QUERIES +%token VAR_FORWARD_ZONE VAR_FORWARD_HOST VAR_FORWARD_ADDR +%token VAR_DO_NOT_QUERY_ADDRESS VAR_HIDE_IDENTITY VAR_HIDE_VERSION +%token VAR_IDENTITY VAR_VERSION VAR_HARDEN_GLUE VAR_MODULE_CONF +%token VAR_TRUST_ANCHOR_FILE VAR_TRUST_ANCHOR VAR_VAL_OVERRIDE_DATE +%token VAR_BOGUS_TTL VAR_VAL_CLEAN_ADDITIONAL VAR_VAL_PERMISSIVE_MODE +%token VAR_INCOMING_NUM_TCP VAR_MSG_BUFFER_SIZE VAR_KEY_CACHE_SIZE +%token VAR_KEY_CACHE_SLABS VAR_TRUSTED_KEYS_FILE +%token VAR_VAL_NSEC3_KEYSIZE_ITERATIONS VAR_USE_SYSLOG +%token VAR_OUTGOING_INTERFACE VAR_ROOT_HINTS VAR_DO_NOT_QUERY_LOCALHOST +%token VAR_CACHE_MAX_TTL VAR_HARDEN_DNSSEC_STRIPPED VAR_ACCESS_CONTROL +%token VAR_LOCAL_ZONE VAR_LOCAL_DATA VAR_INTERFACE_AUTOMATIC +%token VAR_STATISTICS_INTERVAL VAR_DO_DAEMONIZE VAR_USE_CAPS_FOR_ID +%token VAR_STATISTICS_CUMULATIVE VAR_OUTGOING_PORT_PERMIT +%token VAR_OUTGOING_PORT_AVOID VAR_DLV_ANCHOR_FILE VAR_DLV_ANCHOR +%token VAR_NEG_CACHE_SIZE VAR_HARDEN_REFERRAL_PATH VAR_PRIVATE_ADDRESS +%token VAR_PRIVATE_DOMAIN VAR_REMOTE_CONTROL VAR_CONTROL_ENABLE +%token VAR_CONTROL_INTERFACE VAR_CONTROL_PORT VAR_SERVER_KEY_FILE +%token VAR_SERVER_CERT_FILE VAR_CONTROL_KEY_FILE VAR_CONTROL_CERT_FILE +%token VAR_EXTENDED_STATISTICS VAR_LOCAL_DATA_PTR VAR_JOSTLE_TIMEOUT +%token VAR_STUB_PRIME VAR_UNWANTED_REPLY_THRESHOLD VAR_LOG_TIME_ASCII +%token VAR_DOMAIN_INSECURE VAR_PYTHON VAR_PYTHON_SCRIPT VAR_VAL_SIG_SKEW_MIN +%token VAR_VAL_SIG_SKEW_MAX VAR_CACHE_MIN_TTL VAR_VAL_LOG_LEVEL +%token VAR_AUTO_TRUST_ANCHOR_FILE VAR_KEEP_MISSING VAR_ADD_HOLDDOWN +%token VAR_DEL_HOLDDOWN VAR_SO_RCVBUF VAR_EDNS_BUFFER_SIZE VAR_PREFETCH +%token VAR_PREFETCH_KEY VAR_SO_SNDBUF VAR_SO_REUSEPORT VAR_HARDEN_BELOW_NXDOMAIN +%token VAR_IGNORE_CD_FLAG VAR_LOG_QUERIES VAR_TCP_UPSTREAM VAR_SSL_UPSTREAM +%token VAR_SSL_SERVICE_KEY VAR_SSL_SERVICE_PEM VAR_SSL_PORT VAR_FORWARD_FIRST +%token VAR_STUB_FIRST VAR_MINIMAL_RESPONSES VAR_RRSET_ROUNDROBIN +%token VAR_MAX_UDP_SIZE VAR_DELAY_CLOSE VAR_UNBLOCK_LAN_ZONES +%token VAR_DNS64_PREFIX VAR_DNS64_SYNTHALL +%token VAR_DNSTAP VAR_DNSTAP_ENABLE VAR_DNSTAP_SOCKET_PATH +%token VAR_DNSTAP_SEND_IDENTITY VAR_DNSTAP_SEND_VERSION +%token VAR_DNSTAP_IDENTITY VAR_DNSTAP_VERSION +%token VAR_DNSTAP_LOG_RESOLVER_QUERY_MESSAGES +%token VAR_DNSTAP_LOG_RESOLVER_RESPONSE_MESSAGES +%token VAR_DNSTAP_LOG_CLIENT_QUERY_MESSAGES +%token VAR_DNSTAP_LOG_CLIENT_RESPONSE_MESSAGES +%token VAR_DNSTAP_LOG_FORWARDER_QUERY_MESSAGES +%token VAR_DNSTAP_LOG_FORWARDER_RESPONSE_MESSAGES + +%% +toplevelvars: /* empty */ | toplevelvars toplevelvar ; +toplevelvar: serverstart contents_server | stubstart contents_stub | + forwardstart contents_forward | pythonstart contents_py | + rcstart contents_rc | dtstart contents_dt + ; + +/* server: declaration */ +serverstart: VAR_SERVER + { + OUTYY(("\nP(server:)\n")); + } + ; +contents_server: contents_server content_server + | ; +content_server: server_num_threads | server_verbosity | server_port | + server_outgoing_range | server_do_ip4 | + server_do_ip6 | server_do_udp | server_do_tcp | + server_interface | server_chroot | server_username | + server_directory | server_logfile | server_pidfile | + server_msg_cache_size | server_msg_cache_slabs | + server_num_queries_per_thread | server_rrset_cache_size | + server_rrset_cache_slabs | server_outgoing_num_tcp | + server_infra_host_ttl | server_infra_lame_ttl | + server_infra_cache_slabs | server_infra_cache_numhosts | + server_infra_cache_lame_size | server_target_fetch_policy | + server_harden_short_bufsize | server_harden_large_queries | + server_do_not_query_address | server_hide_identity | + server_hide_version | server_identity | server_version | + server_harden_glue | server_module_conf | server_trust_anchor_file | + server_trust_anchor | server_val_override_date | server_bogus_ttl | + server_val_clean_additional | server_val_permissive_mode | + server_incoming_num_tcp | server_msg_buffer_size | + server_key_cache_size | server_key_cache_slabs | + server_trusted_keys_file | server_val_nsec3_keysize_iterations | + server_use_syslog | server_outgoing_interface | server_root_hints | + server_do_not_query_localhost | server_cache_max_ttl | + server_harden_dnssec_stripped | server_access_control | + server_local_zone | server_local_data | server_interface_automatic | + server_statistics_interval | server_do_daemonize | + server_use_caps_for_id | server_statistics_cumulative | + server_outgoing_port_permit | server_outgoing_port_avoid | + server_dlv_anchor_file | server_dlv_anchor | server_neg_cache_size | + server_harden_referral_path | server_private_address | + server_private_domain | server_extended_statistics | + server_local_data_ptr | server_jostle_timeout | + server_unwanted_reply_threshold | server_log_time_ascii | + server_domain_insecure | server_val_sig_skew_min | + server_val_sig_skew_max | server_cache_min_ttl | server_val_log_level | + server_auto_trust_anchor_file | server_add_holddown | + server_del_holddown | server_keep_missing | server_so_rcvbuf | + server_edns_buffer_size | server_prefetch | server_prefetch_key | + server_so_sndbuf | server_harden_below_nxdomain | server_ignore_cd_flag | + server_log_queries | server_tcp_upstream | server_ssl_upstream | + server_ssl_service_key | server_ssl_service_pem | server_ssl_port | + server_minimal_responses | server_rrset_roundrobin | server_max_udp_size | + server_so_reuseport | server_delay_close | server_unblock_lan_zones | + server_dns64_prefix | server_dns64_synthall + ; +stubstart: VAR_STUB_ZONE + { + struct config_stub* s; + OUTYY(("\nP(stub_zone:)\n")); + s = (struct config_stub*)calloc(1, sizeof(struct config_stub)); + if(s) { + s->next = cfg_parser->cfg->stubs; + cfg_parser->cfg->stubs = s; + } else + yyerror("out of memory"); + } + ; +contents_stub: contents_stub content_stub + | ; +content_stub: stub_name | stub_host | stub_addr | stub_prime | stub_first + ; +forwardstart: VAR_FORWARD_ZONE + { + struct config_stub* s; + OUTYY(("\nP(forward_zone:)\n")); + s = (struct config_stub*)calloc(1, sizeof(struct config_stub)); + if(s) { + s->next = cfg_parser->cfg->forwards; + cfg_parser->cfg->forwards = s; + } else + yyerror("out of memory"); + } + ; +contents_forward: contents_forward content_forward + | ; +content_forward: forward_name | forward_host | forward_addr | forward_first + ; +server_num_threads: VAR_NUM_THREADS STRING_ARG + { + OUTYY(("P(server_num_threads:%s)\n", $2)); + if(atoi($2) == 0 && strcmp($2, "0") != 0) + yyerror("number expected"); + else cfg_parser->cfg->num_threads = atoi($2); + free($2); + } + ; +server_verbosity: VAR_VERBOSITY STRING_ARG + { + OUTYY(("P(server_verbosity:%s)\n", $2)); + if(atoi($2) == 0 && strcmp($2, "0") != 0) + yyerror("number expected"); + else cfg_parser->cfg->verbosity = atoi($2); + free($2); + } + ; +server_statistics_interval: VAR_STATISTICS_INTERVAL STRING_ARG + { + OUTYY(("P(server_statistics_interval:%s)\n", $2)); + if(strcmp($2, "") == 0 || strcmp($2, "0") == 0) + cfg_parser->cfg->stat_interval = 0; + else if(atoi($2) == 0) + yyerror("number expected"); + else cfg_parser->cfg->stat_interval = atoi($2); + free($2); + } + ; +server_statistics_cumulative: VAR_STATISTICS_CUMULATIVE STRING_ARG + { + OUTYY(("P(server_statistics_cumulative:%s)\n", $2)); + if(strcmp($2, "yes") != 0 && strcmp($2, "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->stat_cumulative = (strcmp($2, "yes")==0); + free($2); + } + ; +server_extended_statistics: VAR_EXTENDED_STATISTICS STRING_ARG + { + OUTYY(("P(server_extended_statistics:%s)\n", $2)); + if(strcmp($2, "yes") != 0 && strcmp($2, "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->stat_extended = (strcmp($2, "yes")==0); + free($2); + } + ; +server_port: VAR_PORT STRING_ARG + { + OUTYY(("P(server_port:%s)\n", $2)); + if(atoi($2) == 0) + yyerror("port number expected"); + else cfg_parser->cfg->port = atoi($2); + free($2); + } + ; +server_interface: VAR_INTERFACE STRING_ARG + { + OUTYY(("P(server_interface:%s)\n", $2)); + if(cfg_parser->cfg->num_ifs == 0) + cfg_parser->cfg->ifs = calloc(1, sizeof(char*)); + else cfg_parser->cfg->ifs = realloc(cfg_parser->cfg->ifs, + (cfg_parser->cfg->num_ifs+1)*sizeof(char*)); + if(!cfg_parser->cfg->ifs) + yyerror("out of memory"); + else + cfg_parser->cfg->ifs[cfg_parser->cfg->num_ifs++] = $2; + } + ; +server_outgoing_interface: VAR_OUTGOING_INTERFACE STRING_ARG + { + OUTYY(("P(server_outgoing_interface:%s)\n", $2)); + if(cfg_parser->cfg->num_out_ifs == 0) + cfg_parser->cfg->out_ifs = calloc(1, sizeof(char*)); + else cfg_parser->cfg->out_ifs = realloc( + cfg_parser->cfg->out_ifs, + (cfg_parser->cfg->num_out_ifs+1)*sizeof(char*)); + if(!cfg_parser->cfg->out_ifs) + yyerror("out of memory"); + else + cfg_parser->cfg->out_ifs[ + cfg_parser->cfg->num_out_ifs++] = $2; + } + ; +server_outgoing_range: VAR_OUTGOING_RANGE STRING_ARG + { + OUTYY(("P(server_outgoing_range:%s)\n", $2)); + if(atoi($2) == 0) + yyerror("number expected"); + else cfg_parser->cfg->outgoing_num_ports = atoi($2); + free($2); + } + ; +server_outgoing_port_permit: VAR_OUTGOING_PORT_PERMIT STRING_ARG + { + OUTYY(("P(server_outgoing_port_permit:%s)\n", $2)); + if(!cfg_mark_ports($2, 1, + cfg_parser->cfg->outgoing_avail_ports, 65536)) + yyerror("port number or range (\"low-high\") expected"); + free($2); + } + ; +server_outgoing_port_avoid: VAR_OUTGOING_PORT_AVOID STRING_ARG + { + OUTYY(("P(server_outgoing_port_avoid:%s)\n", $2)); + if(!cfg_mark_ports($2, 0, + cfg_parser->cfg->outgoing_avail_ports, 65536)) + yyerror("port number or range (\"low-high\") expected"); + free($2); + } + ; +server_outgoing_num_tcp: VAR_OUTGOING_NUM_TCP STRING_ARG + { + OUTYY(("P(server_outgoing_num_tcp:%s)\n", $2)); + if(atoi($2) == 0 && strcmp($2, "0") != 0) + yyerror("number expected"); + else cfg_parser->cfg->outgoing_num_tcp = atoi($2); + free($2); + } + ; +server_incoming_num_tcp: VAR_INCOMING_NUM_TCP STRING_ARG + { + OUTYY(("P(server_incoming_num_tcp:%s)\n", $2)); + if(atoi($2) == 0 && strcmp($2, "0") != 0) + yyerror("number expected"); + else cfg_parser->cfg->incoming_num_tcp = atoi($2); + free($2); + } + ; +server_interface_automatic: VAR_INTERFACE_AUTOMATIC STRING_ARG + { + OUTYY(("P(server_interface_automatic:%s)\n", $2)); + if(strcmp($2, "yes") != 0 && strcmp($2, "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->if_automatic = (strcmp($2, "yes")==0); + free($2); + } + ; +server_do_ip4: VAR_DO_IP4 STRING_ARG + { + OUTYY(("P(server_do_ip4:%s)\n", $2)); + if(strcmp($2, "yes") != 0 && strcmp($2, "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->do_ip4 = (strcmp($2, "yes")==0); + free($2); + } + ; +server_do_ip6: VAR_DO_IP6 STRING_ARG + { + OUTYY(("P(server_do_ip6:%s)\n", $2)); + if(strcmp($2, "yes") != 0 && strcmp($2, "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->do_ip6 = (strcmp($2, "yes")==0); + free($2); + } + ; +server_do_udp: VAR_DO_UDP STRING_ARG + { + OUTYY(("P(server_do_udp:%s)\n", $2)); + if(strcmp($2, "yes") != 0 && strcmp($2, "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->do_udp = (strcmp($2, "yes")==0); + free($2); + } + ; +server_do_tcp: VAR_DO_TCP STRING_ARG + { + OUTYY(("P(server_do_tcp:%s)\n", $2)); + if(strcmp($2, "yes") != 0 && strcmp($2, "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->do_tcp = (strcmp($2, "yes")==0); + free($2); + } + ; +server_tcp_upstream: VAR_TCP_UPSTREAM STRING_ARG + { + OUTYY(("P(server_tcp_upstream:%s)\n", $2)); + if(strcmp($2, "yes") != 0 && strcmp($2, "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->tcp_upstream = (strcmp($2, "yes")==0); + free($2); + } + ; +server_ssl_upstream: VAR_SSL_UPSTREAM STRING_ARG + { + OUTYY(("P(server_ssl_upstream:%s)\n", $2)); + if(strcmp($2, "yes") != 0 && strcmp($2, "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->ssl_upstream = (strcmp($2, "yes")==0); + free($2); + } + ; +server_ssl_service_key: VAR_SSL_SERVICE_KEY STRING_ARG + { + OUTYY(("P(server_ssl_service_key:%s)\n", $2)); + free(cfg_parser->cfg->ssl_service_key); + cfg_parser->cfg->ssl_service_key = $2; + } + ; +server_ssl_service_pem: VAR_SSL_SERVICE_PEM STRING_ARG + { + OUTYY(("P(server_ssl_service_pem:%s)\n", $2)); + free(cfg_parser->cfg->ssl_service_pem); + cfg_parser->cfg->ssl_service_pem = $2; + } + ; +server_ssl_port: VAR_SSL_PORT STRING_ARG + { + OUTYY(("P(server_ssl_port:%s)\n", $2)); + if(atoi($2) == 0) + yyerror("port number expected"); + else cfg_parser->cfg->ssl_port = atoi($2); + free($2); + } + ; +server_do_daemonize: VAR_DO_DAEMONIZE STRING_ARG + { + OUTYY(("P(server_do_daemonize:%s)\n", $2)); + if(strcmp($2, "yes") != 0 && strcmp($2, "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->do_daemonize = (strcmp($2, "yes")==0); + free($2); + } + ; +server_use_syslog: VAR_USE_SYSLOG STRING_ARG + { + OUTYY(("P(server_use_syslog:%s)\n", $2)); + if(strcmp($2, "yes") != 0 && strcmp($2, "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->use_syslog = (strcmp($2, "yes")==0); +#if !defined(HAVE_SYSLOG_H) && !defined(UB_ON_WINDOWS) + if(strcmp($2, "yes") == 0) + yyerror("no syslog services are available. " + "(reconfigure and compile to add)"); +#endif + free($2); + } + ; +server_log_time_ascii: VAR_LOG_TIME_ASCII STRING_ARG + { + OUTYY(("P(server_log_time_ascii:%s)\n", $2)); + if(strcmp($2, "yes") != 0 && strcmp($2, "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->log_time_ascii = (strcmp($2, "yes")==0); + free($2); + } + ; +server_log_queries: VAR_LOG_QUERIES STRING_ARG + { + OUTYY(("P(server_log_queries:%s)\n", $2)); + if(strcmp($2, "yes") != 0 && strcmp($2, "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->log_queries = (strcmp($2, "yes")==0); + free($2); + } + ; +server_chroot: VAR_CHROOT STRING_ARG + { + OUTYY(("P(server_chroot:%s)\n", $2)); + free(cfg_parser->cfg->chrootdir); + cfg_parser->cfg->chrootdir = $2; + } + ; +server_username: VAR_USERNAME STRING_ARG + { + OUTYY(("P(server_username:%s)\n", $2)); + free(cfg_parser->cfg->username); + cfg_parser->cfg->username = $2; + } + ; +server_directory: VAR_DIRECTORY STRING_ARG + { + OUTYY(("P(server_directory:%s)\n", $2)); + free(cfg_parser->cfg->directory); + cfg_parser->cfg->directory = $2; + } + ; +server_logfile: VAR_LOGFILE STRING_ARG + { + OUTYY(("P(server_logfile:%s)\n", $2)); + free(cfg_parser->cfg->logfile); + cfg_parser->cfg->logfile = $2; + cfg_parser->cfg->use_syslog = 0; + } + ; +server_pidfile: VAR_PIDFILE STRING_ARG + { + OUTYY(("P(server_pidfile:%s)\n", $2)); + free(cfg_parser->cfg->pidfile); + cfg_parser->cfg->pidfile = $2; + } + ; +server_root_hints: VAR_ROOT_HINTS STRING_ARG + { + OUTYY(("P(server_root_hints:%s)\n", $2)); + if(!cfg_strlist_insert(&cfg_parser->cfg->root_hints, $2)) + yyerror("out of memory"); + } + ; +server_dlv_anchor_file: VAR_DLV_ANCHOR_FILE STRING_ARG + { + OUTYY(("P(server_dlv_anchor_file:%s)\n", $2)); + free(cfg_parser->cfg->dlv_anchor_file); + cfg_parser->cfg->dlv_anchor_file = $2; + } + ; +server_dlv_anchor: VAR_DLV_ANCHOR STRING_ARG + { + OUTYY(("P(server_dlv_anchor:%s)\n", $2)); + if(!cfg_strlist_insert(&cfg_parser->cfg->dlv_anchor_list, $2)) + yyerror("out of memory"); + } + ; +server_auto_trust_anchor_file: VAR_AUTO_TRUST_ANCHOR_FILE STRING_ARG + { + OUTYY(("P(server_auto_trust_anchor_file:%s)\n", $2)); + if(!cfg_strlist_insert(&cfg_parser->cfg-> + auto_trust_anchor_file_list, $2)) + yyerror("out of memory"); + } + ; +server_trust_anchor_file: VAR_TRUST_ANCHOR_FILE STRING_ARG + { + OUTYY(("P(server_trust_anchor_file:%s)\n", $2)); + if(!cfg_strlist_insert(&cfg_parser->cfg-> + trust_anchor_file_list, $2)) + yyerror("out of memory"); + } + ; +server_trusted_keys_file: VAR_TRUSTED_KEYS_FILE STRING_ARG + { + OUTYY(("P(server_trusted_keys_file:%s)\n", $2)); + if(!cfg_strlist_insert(&cfg_parser->cfg-> + trusted_keys_file_list, $2)) + yyerror("out of memory"); + } + ; +server_trust_anchor: VAR_TRUST_ANCHOR STRING_ARG + { + OUTYY(("P(server_trust_anchor:%s)\n", $2)); + if(!cfg_strlist_insert(&cfg_parser->cfg->trust_anchor_list, $2)) + yyerror("out of memory"); + } + ; +server_domain_insecure: VAR_DOMAIN_INSECURE STRING_ARG + { + OUTYY(("P(server_domain_insecure:%s)\n", $2)); + if(!cfg_strlist_insert(&cfg_parser->cfg->domain_insecure, $2)) + yyerror("out of memory"); + } + ; +server_hide_identity: VAR_HIDE_IDENTITY STRING_ARG + { + OUTYY(("P(server_hide_identity:%s)\n", $2)); + if(strcmp($2, "yes") != 0 && strcmp($2, "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->hide_identity = (strcmp($2, "yes")==0); + free($2); + } + ; +server_hide_version: VAR_HIDE_VERSION STRING_ARG + { + OUTYY(("P(server_hide_version:%s)\n", $2)); + if(strcmp($2, "yes") != 0 && strcmp($2, "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->hide_version = (strcmp($2, "yes")==0); + free($2); + } + ; +server_identity: VAR_IDENTITY STRING_ARG + { + OUTYY(("P(server_identity:%s)\n", $2)); + free(cfg_parser->cfg->identity); + cfg_parser->cfg->identity = $2; + } + ; +server_version: VAR_VERSION STRING_ARG + { + OUTYY(("P(server_version:%s)\n", $2)); + free(cfg_parser->cfg->version); + cfg_parser->cfg->version = $2; + } + ; +server_so_rcvbuf: VAR_SO_RCVBUF STRING_ARG + { + OUTYY(("P(server_so_rcvbuf:%s)\n", $2)); + if(!cfg_parse_memsize($2, &cfg_parser->cfg->so_rcvbuf)) + yyerror("buffer size expected"); + free($2); + } + ; +server_so_sndbuf: VAR_SO_SNDBUF STRING_ARG + { + OUTYY(("P(server_so_sndbuf:%s)\n", $2)); + if(!cfg_parse_memsize($2, &cfg_parser->cfg->so_sndbuf)) + yyerror("buffer size expected"); + free($2); + } + ; +server_so_reuseport: VAR_SO_REUSEPORT STRING_ARG + { + OUTYY(("P(server_so_reuseport:%s)\n", $2)); + if(strcmp($2, "yes") != 0 && strcmp($2, "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->so_reuseport = + (strcmp($2, "yes")==0); + free($2); + } + ; +server_edns_buffer_size: VAR_EDNS_BUFFER_SIZE STRING_ARG + { + OUTYY(("P(server_edns_buffer_size:%s)\n", $2)); + if(atoi($2) == 0) + yyerror("number expected"); + else if (atoi($2) < 12) + yyerror("edns buffer size too small"); + else if (atoi($2) > 65535) + cfg_parser->cfg->edns_buffer_size = 65535; + else cfg_parser->cfg->edns_buffer_size = atoi($2); + free($2); + } + ; +server_msg_buffer_size: VAR_MSG_BUFFER_SIZE STRING_ARG + { + OUTYY(("P(server_msg_buffer_size:%s)\n", $2)); + if(atoi($2) == 0) + yyerror("number expected"); + else if (atoi($2) < 4096) + yyerror("message buffer size too small (use 4096)"); + else cfg_parser->cfg->msg_buffer_size = atoi($2); + free($2); + } + ; +server_msg_cache_size: VAR_MSG_CACHE_SIZE STRING_ARG + { + OUTYY(("P(server_msg_cache_size:%s)\n", $2)); + if(!cfg_parse_memsize($2, &cfg_parser->cfg->msg_cache_size)) + yyerror("memory size expected"); + free($2); + } + ; +server_msg_cache_slabs: VAR_MSG_CACHE_SLABS STRING_ARG + { + OUTYY(("P(server_msg_cache_slabs:%s)\n", $2)); + if(atoi($2) == 0) + yyerror("number expected"); + else { + cfg_parser->cfg->msg_cache_slabs = atoi($2); + if(!is_pow2(cfg_parser->cfg->msg_cache_slabs)) + yyerror("must be a power of 2"); + } + free($2); + } + ; +server_num_queries_per_thread: VAR_NUM_QUERIES_PER_THREAD STRING_ARG + { + OUTYY(("P(server_num_queries_per_thread:%s)\n", $2)); + if(atoi($2) == 0) + yyerror("number expected"); + else cfg_parser->cfg->num_queries_per_thread = atoi($2); + free($2); + } + ; +server_jostle_timeout: VAR_JOSTLE_TIMEOUT STRING_ARG + { + OUTYY(("P(server_jostle_timeout:%s)\n", $2)); + if(atoi($2) == 0 && strcmp($2, "0") != 0) + yyerror("number expected"); + else cfg_parser->cfg->jostle_time = atoi($2); + free($2); + } + ; +server_delay_close: VAR_DELAY_CLOSE STRING_ARG + { + OUTYY(("P(server_delay_close:%s)\n", $2)); + if(atoi($2) == 0 && strcmp($2, "0") != 0) + yyerror("number expected"); + else cfg_parser->cfg->delay_close = atoi($2); + free($2); + } + ; +server_unblock_lan_zones: VAR_UNBLOCK_LAN_ZONES STRING_ARG + { + OUTYY(("P(server_unblock_lan_zones:%s)\n", $2)); + if(strcmp($2, "yes") != 0 && strcmp($2, "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->unblock_lan_zones = + (strcmp($2, "yes")==0); + free($2); + } + ; +server_rrset_cache_size: VAR_RRSET_CACHE_SIZE STRING_ARG + { + OUTYY(("P(server_rrset_cache_size:%s)\n", $2)); + if(!cfg_parse_memsize($2, &cfg_parser->cfg->rrset_cache_size)) + yyerror("memory size expected"); + free($2); + } + ; +server_rrset_cache_slabs: VAR_RRSET_CACHE_SLABS STRING_ARG + { + OUTYY(("P(server_rrset_cache_slabs:%s)\n", $2)); + if(atoi($2) == 0) + yyerror("number expected"); + else { + cfg_parser->cfg->rrset_cache_slabs = atoi($2); + if(!is_pow2(cfg_parser->cfg->rrset_cache_slabs)) + yyerror("must be a power of 2"); + } + free($2); + } + ; +server_infra_host_ttl: VAR_INFRA_HOST_TTL STRING_ARG + { + OUTYY(("P(server_infra_host_ttl:%s)\n", $2)); + if(atoi($2) == 0 && strcmp($2, "0") != 0) + yyerror("number expected"); + else cfg_parser->cfg->host_ttl = atoi($2); + free($2); + } + ; +server_infra_lame_ttl: VAR_INFRA_LAME_TTL STRING_ARG + { + OUTYY(("P(server_infra_lame_ttl:%s)\n", $2)); + verbose(VERB_DETAIL, "ignored infra-lame-ttl: %s (option " + "removed, use infra-host-ttl)", $2); + free($2); + } + ; +server_infra_cache_numhosts: VAR_INFRA_CACHE_NUMHOSTS STRING_ARG + { + OUTYY(("P(server_infra_cache_numhosts:%s)\n", $2)); + if(atoi($2) == 0) + yyerror("number expected"); + else cfg_parser->cfg->infra_cache_numhosts = atoi($2); + free($2); + } + ; +server_infra_cache_lame_size: VAR_INFRA_CACHE_LAME_SIZE STRING_ARG + { + OUTYY(("P(server_infra_cache_lame_size:%s)\n", $2)); + verbose(VERB_DETAIL, "ignored infra-cache-lame-size: %s " + "(option removed, use infra-cache-numhosts)", $2); + free($2); + } + ; +server_infra_cache_slabs: VAR_INFRA_CACHE_SLABS STRING_ARG + { + OUTYY(("P(server_infra_cache_slabs:%s)\n", $2)); + if(atoi($2) == 0) + yyerror("number expected"); + else { + cfg_parser->cfg->infra_cache_slabs = atoi($2); + if(!is_pow2(cfg_parser->cfg->infra_cache_slabs)) + yyerror("must be a power of 2"); + } + free($2); + } + ; +server_target_fetch_policy: VAR_TARGET_FETCH_POLICY STRING_ARG + { + OUTYY(("P(server_target_fetch_policy:%s)\n", $2)); + free(cfg_parser->cfg->target_fetch_policy); + cfg_parser->cfg->target_fetch_policy = $2; + } + ; +server_harden_short_bufsize: VAR_HARDEN_SHORT_BUFSIZE STRING_ARG + { + OUTYY(("P(server_harden_short_bufsize:%s)\n", $2)); + if(strcmp($2, "yes") != 0 && strcmp($2, "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->harden_short_bufsize = + (strcmp($2, "yes")==0); + free($2); + } + ; +server_harden_large_queries: VAR_HARDEN_LARGE_QUERIES STRING_ARG + { + OUTYY(("P(server_harden_large_queries:%s)\n", $2)); + if(strcmp($2, "yes") != 0 && strcmp($2, "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->harden_large_queries = + (strcmp($2, "yes")==0); + free($2); + } + ; +server_harden_glue: VAR_HARDEN_GLUE STRING_ARG + { + OUTYY(("P(server_harden_glue:%s)\n", $2)); + if(strcmp($2, "yes") != 0 && strcmp($2, "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->harden_glue = + (strcmp($2, "yes")==0); + free($2); + } + ; +server_harden_dnssec_stripped: VAR_HARDEN_DNSSEC_STRIPPED STRING_ARG + { + OUTYY(("P(server_harden_dnssec_stripped:%s)\n", $2)); + if(strcmp($2, "yes") != 0 && strcmp($2, "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->harden_dnssec_stripped = + (strcmp($2, "yes")==0); + free($2); + } + ; +server_harden_below_nxdomain: VAR_HARDEN_BELOW_NXDOMAIN STRING_ARG + { + OUTYY(("P(server_harden_below_nxdomain:%s)\n", $2)); + if(strcmp($2, "yes") != 0 && strcmp($2, "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->harden_below_nxdomain = + (strcmp($2, "yes")==0); + free($2); + } + ; +server_harden_referral_path: VAR_HARDEN_REFERRAL_PATH STRING_ARG + { + OUTYY(("P(server_harden_referral_path:%s)\n", $2)); + if(strcmp($2, "yes") != 0 && strcmp($2, "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->harden_referral_path = + (strcmp($2, "yes")==0); + free($2); + } + ; +server_use_caps_for_id: VAR_USE_CAPS_FOR_ID STRING_ARG + { + OUTYY(("P(server_use_caps_for_id:%s)\n", $2)); + if(strcmp($2, "yes") != 0 && strcmp($2, "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->use_caps_bits_for_id = + (strcmp($2, "yes")==0); + free($2); + } + ; +server_private_address: VAR_PRIVATE_ADDRESS STRING_ARG + { + OUTYY(("P(server_private_address:%s)\n", $2)); + if(!cfg_strlist_insert(&cfg_parser->cfg->private_address, $2)) + yyerror("out of memory"); + } + ; +server_private_domain: VAR_PRIVATE_DOMAIN STRING_ARG + { + OUTYY(("P(server_private_domain:%s)\n", $2)); + if(!cfg_strlist_insert(&cfg_parser->cfg->private_domain, $2)) + yyerror("out of memory"); + } + ; +server_prefetch: VAR_PREFETCH STRING_ARG + { + OUTYY(("P(server_prefetch:%s)\n", $2)); + if(strcmp($2, "yes") != 0 && strcmp($2, "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->prefetch = (strcmp($2, "yes")==0); + free($2); + } + ; +server_prefetch_key: VAR_PREFETCH_KEY STRING_ARG + { + OUTYY(("P(server_prefetch_key:%s)\n", $2)); + if(strcmp($2, "yes") != 0 && strcmp($2, "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->prefetch_key = (strcmp($2, "yes")==0); + free($2); + } + ; +server_unwanted_reply_threshold: VAR_UNWANTED_REPLY_THRESHOLD STRING_ARG + { + OUTYY(("P(server_unwanted_reply_threshold:%s)\n", $2)); + if(atoi($2) == 0 && strcmp($2, "0") != 0) + yyerror("number expected"); + else cfg_parser->cfg->unwanted_threshold = atoi($2); + free($2); + } + ; +server_do_not_query_address: VAR_DO_NOT_QUERY_ADDRESS STRING_ARG + { + OUTYY(("P(server_do_not_query_address:%s)\n", $2)); + if(!cfg_strlist_insert(&cfg_parser->cfg->donotqueryaddrs, $2)) + yyerror("out of memory"); + } + ; +server_do_not_query_localhost: VAR_DO_NOT_QUERY_LOCALHOST STRING_ARG + { + OUTYY(("P(server_do_not_query_localhost:%s)\n", $2)); + if(strcmp($2, "yes") != 0 && strcmp($2, "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->donotquery_localhost = + (strcmp($2, "yes")==0); + free($2); + } + ; +server_access_control: VAR_ACCESS_CONTROL STRING_ARG STRING_ARG + { + OUTYY(("P(server_access_control:%s %s)\n", $2, $3)); + if(strcmp($3, "deny")!=0 && strcmp($3, "refuse")!=0 && + strcmp($3, "deny_non_local")!=0 && + strcmp($3, "refuse_non_local")!=0 && + strcmp($3, "allow")!=0 && + strcmp($3, "allow_snoop")!=0) { + yyerror("expected deny, refuse, deny_non_local, " + "refuse_non_local, allow or allow_snoop " + "in access control action"); + } else { + if(!cfg_str2list_insert(&cfg_parser->cfg->acls, $2, $3)) + fatal_exit("out of memory adding acl"); + } + } + ; +server_module_conf: VAR_MODULE_CONF STRING_ARG + { + OUTYY(("P(server_module_conf:%s)\n", $2)); + free(cfg_parser->cfg->module_conf); + cfg_parser->cfg->module_conf = $2; + } + ; +server_val_override_date: VAR_VAL_OVERRIDE_DATE STRING_ARG + { + OUTYY(("P(server_val_override_date:%s)\n", $2)); + if(strlen($2) == 0 || strcmp($2, "0") == 0) { + cfg_parser->cfg->val_date_override = 0; + } else if(strlen($2) == 14) { + cfg_parser->cfg->val_date_override = + cfg_convert_timeval($2); + if(!cfg_parser->cfg->val_date_override) + yyerror("bad date/time specification"); + } else { + if(atoi($2) == 0) + yyerror("number expected"); + cfg_parser->cfg->val_date_override = atoi($2); + } + free($2); + } + ; +server_val_sig_skew_min: VAR_VAL_SIG_SKEW_MIN STRING_ARG + { + OUTYY(("P(server_val_sig_skew_min:%s)\n", $2)); + if(strlen($2) == 0 || strcmp($2, "0") == 0) { + cfg_parser->cfg->val_sig_skew_min = 0; + } else { + cfg_parser->cfg->val_sig_skew_min = atoi($2); + if(!cfg_parser->cfg->val_sig_skew_min) + yyerror("number expected"); + } + free($2); + } + ; +server_val_sig_skew_max: VAR_VAL_SIG_SKEW_MAX STRING_ARG + { + OUTYY(("P(server_val_sig_skew_max:%s)\n", $2)); + if(strlen($2) == 0 || strcmp($2, "0") == 0) { + cfg_parser->cfg->val_sig_skew_max = 0; + } else { + cfg_parser->cfg->val_sig_skew_max = atoi($2); + if(!cfg_parser->cfg->val_sig_skew_max) + yyerror("number expected"); + } + free($2); + } + ; +server_cache_max_ttl: VAR_CACHE_MAX_TTL STRING_ARG + { + OUTYY(("P(server_cache_max_ttl:%s)\n", $2)); + if(atoi($2) == 0 && strcmp($2, "0") != 0) + yyerror("number expected"); + else cfg_parser->cfg->max_ttl = atoi($2); + free($2); + } + ; +server_cache_min_ttl: VAR_CACHE_MIN_TTL STRING_ARG + { + OUTYY(("P(server_cache_min_ttl:%s)\n", $2)); + if(atoi($2) == 0 && strcmp($2, "0") != 0) + yyerror("number expected"); + else cfg_parser->cfg->min_ttl = atoi($2); + free($2); + } + ; +server_bogus_ttl: VAR_BOGUS_TTL STRING_ARG + { + OUTYY(("P(server_bogus_ttl:%s)\n", $2)); + if(atoi($2) == 0 && strcmp($2, "0") != 0) + yyerror("number expected"); + else cfg_parser->cfg->bogus_ttl = atoi($2); + free($2); + } + ; +server_val_clean_additional: VAR_VAL_CLEAN_ADDITIONAL STRING_ARG + { + OUTYY(("P(server_val_clean_additional:%s)\n", $2)); + if(strcmp($2, "yes") != 0 && strcmp($2, "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->val_clean_additional = + (strcmp($2, "yes")==0); + free($2); + } + ; +server_val_permissive_mode: VAR_VAL_PERMISSIVE_MODE STRING_ARG + { + OUTYY(("P(server_val_permissive_mode:%s)\n", $2)); + if(strcmp($2, "yes") != 0 && strcmp($2, "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->val_permissive_mode = + (strcmp($2, "yes")==0); + free($2); + } + ; +server_ignore_cd_flag: VAR_IGNORE_CD_FLAG STRING_ARG + { + OUTYY(("P(server_ignore_cd_flag:%s)\n", $2)); + if(strcmp($2, "yes") != 0 && strcmp($2, "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->ignore_cd = (strcmp($2, "yes")==0); + free($2); + } + ; +server_val_log_level: VAR_VAL_LOG_LEVEL STRING_ARG + { + OUTYY(("P(server_val_log_level:%s)\n", $2)); + if(atoi($2) == 0 && strcmp($2, "0") != 0) + yyerror("number expected"); + else cfg_parser->cfg->val_log_level = atoi($2); + free($2); + } + ; +server_val_nsec3_keysize_iterations: VAR_VAL_NSEC3_KEYSIZE_ITERATIONS STRING_ARG + { + OUTYY(("P(server_val_nsec3_keysize_iterations:%s)\n", $2)); + free(cfg_parser->cfg->val_nsec3_key_iterations); + cfg_parser->cfg->val_nsec3_key_iterations = $2; + } + ; +server_add_holddown: VAR_ADD_HOLDDOWN STRING_ARG + { + OUTYY(("P(server_add_holddown:%s)\n", $2)); + if(atoi($2) == 0 && strcmp($2, "0") != 0) + yyerror("number expected"); + else cfg_parser->cfg->add_holddown = atoi($2); + free($2); + } + ; +server_del_holddown: VAR_DEL_HOLDDOWN STRING_ARG + { + OUTYY(("P(server_del_holddown:%s)\n", $2)); + if(atoi($2) == 0 && strcmp($2, "0") != 0) + yyerror("number expected"); + else cfg_parser->cfg->del_holddown = atoi($2); + free($2); + } + ; +server_keep_missing: VAR_KEEP_MISSING STRING_ARG + { + OUTYY(("P(server_keep_missing:%s)\n", $2)); + if(atoi($2) == 0 && strcmp($2, "0") != 0) + yyerror("number expected"); + else cfg_parser->cfg->keep_missing = atoi($2); + free($2); + } + ; +server_key_cache_size: VAR_KEY_CACHE_SIZE STRING_ARG + { + OUTYY(("P(server_key_cache_size:%s)\n", $2)); + if(!cfg_parse_memsize($2, &cfg_parser->cfg->key_cache_size)) + yyerror("memory size expected"); + free($2); + } + ; +server_key_cache_slabs: VAR_KEY_CACHE_SLABS STRING_ARG + { + OUTYY(("P(server_key_cache_slabs:%s)\n", $2)); + if(atoi($2) == 0) + yyerror("number expected"); + else { + cfg_parser->cfg->key_cache_slabs = atoi($2); + if(!is_pow2(cfg_parser->cfg->key_cache_slabs)) + yyerror("must be a power of 2"); + } + free($2); + } + ; +server_neg_cache_size: VAR_NEG_CACHE_SIZE STRING_ARG + { + OUTYY(("P(server_neg_cache_size:%s)\n", $2)); + if(!cfg_parse_memsize($2, &cfg_parser->cfg->neg_cache_size)) + yyerror("memory size expected"); + free($2); + } + ; +server_local_zone: VAR_LOCAL_ZONE STRING_ARG STRING_ARG + { + OUTYY(("P(server_local_zone:%s %s)\n", $2, $3)); + if(strcmp($3, "static")!=0 && strcmp($3, "deny")!=0 && + strcmp($3, "refuse")!=0 && strcmp($3, "redirect")!=0 && + strcmp($3, "transparent")!=0 && strcmp($3, "nodefault")!=0 + && strcmp($3, "typetransparent")!=0) + yyerror("local-zone type: expected static, deny, " + "refuse, redirect, transparent, " + "typetransparent or nodefault"); + else if(strcmp($3, "nodefault")==0) { + if(!cfg_strlist_insert(&cfg_parser->cfg-> + local_zones_nodefault, $2)) + fatal_exit("out of memory adding local-zone"); + free($3); + } else { + if(!cfg_str2list_insert(&cfg_parser->cfg->local_zones, + $2, $3)) + fatal_exit("out of memory adding local-zone"); + } + } + ; +server_local_data: VAR_LOCAL_DATA STRING_ARG + { + OUTYY(("P(server_local_data:%s)\n", $2)); + if(!cfg_strlist_insert(&cfg_parser->cfg->local_data, $2)) + fatal_exit("out of memory adding local-data"); + } + ; +server_local_data_ptr: VAR_LOCAL_DATA_PTR STRING_ARG + { + char* ptr; + OUTYY(("P(server_local_data_ptr:%s)\n", $2)); + ptr = cfg_ptr_reverse($2); + free($2); + if(ptr) { + if(!cfg_strlist_insert(&cfg_parser->cfg-> + local_data, ptr)) + fatal_exit("out of memory adding local-data"); + } else { + yyerror("local-data-ptr could not be reversed"); + } + } + ; +server_minimal_responses: VAR_MINIMAL_RESPONSES STRING_ARG + { + OUTYY(("P(server_minimal_responses:%s)\n", $2)); + if(strcmp($2, "yes") != 0 && strcmp($2, "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->minimal_responses = + (strcmp($2, "yes")==0); + free($2); + } + ; +server_rrset_roundrobin: VAR_RRSET_ROUNDROBIN STRING_ARG + { + OUTYY(("P(server_rrset_roundrobin:%s)\n", $2)); + if(strcmp($2, "yes") != 0 && strcmp($2, "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->rrset_roundrobin = + (strcmp($2, "yes")==0); + free($2); + } + ; +server_max_udp_size: VAR_MAX_UDP_SIZE STRING_ARG + { + OUTYY(("P(server_max_udp_size:%s)\n", $2)); + cfg_parser->cfg->max_udp_size = atoi($2); + free($2); + } + ; +server_dns64_prefix: VAR_DNS64_PREFIX STRING_ARG + { + OUTYY(("P(dns64_prefix:%s)\n", $2)); + free(cfg_parser->cfg->dns64_prefix); + cfg_parser->cfg->dns64_prefix = $2; + } + ; +server_dns64_synthall: VAR_DNS64_SYNTHALL STRING_ARG + { + OUTYY(("P(server_dns64_synthall:%s)\n", $2)); + if(strcmp($2, "yes") != 0 && strcmp($2, "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->dns64_synthall = (strcmp($2, "yes")==0); + free($2); + } + ; +stub_name: VAR_NAME STRING_ARG + { + OUTYY(("P(name:%s)\n", $2)); + if(cfg_parser->cfg->stubs->name) + yyerror("stub name override, there must be one name " + "for one stub-zone"); + free(cfg_parser->cfg->stubs->name); + cfg_parser->cfg->stubs->name = $2; + } + ; +stub_host: VAR_STUB_HOST STRING_ARG + { + OUTYY(("P(stub-host:%s)\n", $2)); + if(!cfg_strlist_insert(&cfg_parser->cfg->stubs->hosts, $2)) + yyerror("out of memory"); + } + ; +stub_addr: VAR_STUB_ADDR STRING_ARG + { + OUTYY(("P(stub-addr:%s)\n", $2)); + if(!cfg_strlist_insert(&cfg_parser->cfg->stubs->addrs, $2)) + yyerror("out of memory"); + } + ; +stub_first: VAR_STUB_FIRST STRING_ARG + { + OUTYY(("P(stub-first:%s)\n", $2)); + if(strcmp($2, "yes") != 0 && strcmp($2, "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->stubs->isfirst=(strcmp($2, "yes")==0); + free($2); + } + ; +stub_prime: VAR_STUB_PRIME STRING_ARG + { + OUTYY(("P(stub-prime:%s)\n", $2)); + if(strcmp($2, "yes") != 0 && strcmp($2, "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->stubs->isprime = + (strcmp($2, "yes")==0); + free($2); + } + ; +forward_name: VAR_NAME STRING_ARG + { + OUTYY(("P(name:%s)\n", $2)); + if(cfg_parser->cfg->forwards->name) + yyerror("forward name override, there must be one " + "name for one forward-zone"); + free(cfg_parser->cfg->forwards->name); + cfg_parser->cfg->forwards->name = $2; + } + ; +forward_host: VAR_FORWARD_HOST STRING_ARG + { + OUTYY(("P(forward-host:%s)\n", $2)); + if(!cfg_strlist_insert(&cfg_parser->cfg->forwards->hosts, $2)) + yyerror("out of memory"); + } + ; +forward_addr: VAR_FORWARD_ADDR STRING_ARG + { + OUTYY(("P(forward-addr:%s)\n", $2)); + if(!cfg_strlist_insert(&cfg_parser->cfg->forwards->addrs, $2)) + yyerror("out of memory"); + } + ; +forward_first: VAR_FORWARD_FIRST STRING_ARG + { + OUTYY(("P(forward-first:%s)\n", $2)); + if(strcmp($2, "yes") != 0 && strcmp($2, "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->forwards->isfirst=(strcmp($2, "yes")==0); + free($2); + } + ; +rcstart: VAR_REMOTE_CONTROL + { + OUTYY(("\nP(remote-control:)\n")); + } + ; +contents_rc: contents_rc content_rc + | ; +content_rc: rc_control_enable | rc_control_interface | rc_control_port | + rc_server_key_file | rc_server_cert_file | rc_control_key_file | + rc_control_cert_file + ; +rc_control_enable: VAR_CONTROL_ENABLE STRING_ARG + { + OUTYY(("P(control_enable:%s)\n", $2)); + if(strcmp($2, "yes") != 0 && strcmp($2, "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->remote_control_enable = + (strcmp($2, "yes")==0); + free($2); + } + ; +rc_control_port: VAR_CONTROL_PORT STRING_ARG + { + OUTYY(("P(control_port:%s)\n", $2)); + if(atoi($2) == 0) + yyerror("control port number expected"); + else cfg_parser->cfg->control_port = atoi($2); + free($2); + } + ; +rc_control_interface: VAR_CONTROL_INTERFACE STRING_ARG + { + OUTYY(("P(control_interface:%s)\n", $2)); + if(!cfg_strlist_insert(&cfg_parser->cfg->control_ifs, $2)) + yyerror("out of memory"); + } + ; +rc_server_key_file: VAR_SERVER_KEY_FILE STRING_ARG + { + OUTYY(("P(rc_server_key_file:%s)\n", $2)); + free(cfg_parser->cfg->server_key_file); + cfg_parser->cfg->server_key_file = $2; + } + ; +rc_server_cert_file: VAR_SERVER_CERT_FILE STRING_ARG + { + OUTYY(("P(rc_server_cert_file:%s)\n", $2)); + free(cfg_parser->cfg->server_cert_file); + cfg_parser->cfg->server_cert_file = $2; + } + ; +rc_control_key_file: VAR_CONTROL_KEY_FILE STRING_ARG + { + OUTYY(("P(rc_control_key_file:%s)\n", $2)); + free(cfg_parser->cfg->control_key_file); + cfg_parser->cfg->control_key_file = $2; + } + ; +rc_control_cert_file: VAR_CONTROL_CERT_FILE STRING_ARG + { + OUTYY(("P(rc_control_cert_file:%s)\n", $2)); + free(cfg_parser->cfg->control_cert_file); + cfg_parser->cfg->control_cert_file = $2; + } + ; +dtstart: VAR_DNSTAP + { + OUTYY(("\nP(dnstap:)\n")); + } + ; +contents_dt: contents_dt content_dt + | ; +content_dt: dt_dnstap_enable | dt_dnstap_socket_path | + dt_dnstap_send_identity | dt_dnstap_send_version | + dt_dnstap_identity | dt_dnstap_version | + dt_dnstap_log_resolver_query_messages | + dt_dnstap_log_resolver_response_messages | + dt_dnstap_log_client_query_messages | + dt_dnstap_log_client_response_messages | + dt_dnstap_log_forwarder_query_messages | + dt_dnstap_log_forwarder_response_messages + ; +dt_dnstap_enable: VAR_DNSTAP_ENABLE STRING_ARG + { + OUTYY(("P(dt_dnstap_enable:%s)\n", $2)); + if(strcmp($2, "yes") != 0 && strcmp($2, "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->dnstap = (strcmp($2, "yes")==0); + } + ; +dt_dnstap_socket_path: VAR_DNSTAP_SOCKET_PATH STRING_ARG + { + OUTYY(("P(dt_dnstap_socket_path:%s)\n", $2)); + free(cfg_parser->cfg->dnstap_socket_path); + cfg_parser->cfg->dnstap_socket_path = $2; + } + ; +dt_dnstap_send_identity: VAR_DNSTAP_SEND_IDENTITY STRING_ARG + { + OUTYY(("P(dt_dnstap_send_identity:%s)\n", $2)); + if(strcmp($2, "yes") != 0 && strcmp($2, "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->dnstap_send_identity = (strcmp($2, "yes")==0); + } + ; +dt_dnstap_send_version: VAR_DNSTAP_SEND_VERSION STRING_ARG + { + OUTYY(("P(dt_dnstap_send_version:%s)\n", $2)); + if(strcmp($2, "yes") != 0 && strcmp($2, "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->dnstap_send_version = (strcmp($2, "yes")==0); + } + ; +dt_dnstap_identity: VAR_DNSTAP_IDENTITY STRING_ARG + { + OUTYY(("P(dt_dnstap_identity:%s)\n", $2)); + free(cfg_parser->cfg->dnstap_identity); + cfg_parser->cfg->dnstap_identity = $2; + } + ; +dt_dnstap_version: VAR_DNSTAP_VERSION STRING_ARG + { + OUTYY(("P(dt_dnstap_version:%s)\n", $2)); + free(cfg_parser->cfg->dnstap_version); + cfg_parser->cfg->dnstap_version = $2; + } + ; +dt_dnstap_log_resolver_query_messages: VAR_DNSTAP_LOG_RESOLVER_QUERY_MESSAGES STRING_ARG + { + OUTYY(("P(dt_dnstap_log_resolver_query_messages:%s)\n", $2)); + if(strcmp($2, "yes") != 0 && strcmp($2, "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->dnstap_log_resolver_query_messages = + (strcmp($2, "yes")==0); + } + ; +dt_dnstap_log_resolver_response_messages: VAR_DNSTAP_LOG_RESOLVER_RESPONSE_MESSAGES STRING_ARG + { + OUTYY(("P(dt_dnstap_log_resolver_response_messages:%s)\n", $2)); + if(strcmp($2, "yes") != 0 && strcmp($2, "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->dnstap_log_resolver_response_messages = + (strcmp($2, "yes")==0); + } + ; +dt_dnstap_log_client_query_messages: VAR_DNSTAP_LOG_CLIENT_QUERY_MESSAGES STRING_ARG + { + OUTYY(("P(dt_dnstap_log_client_query_messages:%s)\n", $2)); + if(strcmp($2, "yes") != 0 && strcmp($2, "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->dnstap_log_client_query_messages = + (strcmp($2, "yes")==0); + } + ; +dt_dnstap_log_client_response_messages: VAR_DNSTAP_LOG_CLIENT_RESPONSE_MESSAGES STRING_ARG + { + OUTYY(("P(dt_dnstap_log_client_response_messages:%s)\n", $2)); + if(strcmp($2, "yes") != 0 && strcmp($2, "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->dnstap_log_client_response_messages = + (strcmp($2, "yes")==0); + } + ; +dt_dnstap_log_forwarder_query_messages: VAR_DNSTAP_LOG_FORWARDER_QUERY_MESSAGES STRING_ARG + { + OUTYY(("P(dt_dnstap_log_forwarder_query_messages:%s)\n", $2)); + if(strcmp($2, "yes") != 0 && strcmp($2, "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->dnstap_log_forwarder_query_messages = + (strcmp($2, "yes")==0); + } + ; +dt_dnstap_log_forwarder_response_messages: VAR_DNSTAP_LOG_FORWARDER_RESPONSE_MESSAGES STRING_ARG + { + OUTYY(("P(dt_dnstap_log_forwarder_response_messages:%s)\n", $2)); + if(strcmp($2, "yes") != 0 && strcmp($2, "no") != 0) + yyerror("expected yes or no."); + else cfg_parser->cfg->dnstap_log_forwarder_response_messages = + (strcmp($2, "yes")==0); + } + ; +pythonstart: VAR_PYTHON + { + OUTYY(("\nP(python:)\n")); + } + ; +contents_py: contents_py content_py + | ; +content_py: py_script + ; +py_script: VAR_PYTHON_SCRIPT STRING_ARG + { + OUTYY(("P(python-script:%s)\n", $2)); + free(cfg_parser->cfg->python_script); + cfg_parser->cfg->python_script = $2; + } +%% + +/* parse helper routines could be here */ diff --git a/external/unbound/util/configyyrename.h b/external/unbound/util/configyyrename.h new file mode 100644 index 000000000..f529be577 --- /dev/null +++ b/external/unbound/util/configyyrename.h @@ -0,0 +1,88 @@ +/* + * configyyrename.h -- renames for config file yy values to avoid conflicts. + * + * Copyright (c) 2001-2006, NLnet Labs. All rights reserved. + * + * See LICENSE for the license. + * + */ + +#ifndef UTIL_CONFIGYYRENAME_H +#define UTIL_CONFIGYYRENAME_H + +/* defines to change symbols so that no yacc/lex symbols clash */ +#define yymaxdepth ub_c_maxdepth +#define yyparse ub_c_parse +#define yylex ub_c_lex +#define yyerror ub_c_error +#define yylval ub_c_lval +#define yychar ub_c_char +#define yydebug ub_c_debug +#define yypact ub_c_pact +#define yyr1 ub_c_r1 +#define yyr2 ub_c_r2 +#define yydef ub_c_def +#define yychk ub_c_chk +#define yypgo ub_c_pgo +#define yyact ub_c_act +#define yyexca ub_c_exca +#define yyerrflag ub_c_errflag +#define yynerrs ub_c_nerrs +#define yyps ub_c_ps +#define yypv ub_c_pv +#define yys ub_c_s +#define yy_yys ub_c_yys +#define yystate ub_c_state +#define yytmp ub_c_tmp +#define yyv ub_c_v +#define yy_yyv ub_c_yyv +#define yyval ub_c_val +#define yylloc ub_c_lloc +#define yyreds ub_c_reds +#define yytoks ub_c_toks +#define yylhs ub_c_yylhs +#define yylen ub_c_yylen +#define yydefred ub_c_yydefred +#define yydgoto ub_c_yydgoto +#define yysindex ub_c_yysindex +#define yyrindex ub_c_yyrindex +#define yygindex ub_c_yygindex +#define yytable ub_c_yytable +#define yycheck ub_c_yycheck +#define yyname ub_c_yyname +#define yyrule ub_c_yyrule +#define yyin ub_c_in +#define yyout ub_c_out +#define yywrap ub_c_wrap +#define yy_load_buffer_state ub_c_load_buffer_state +#define yy_switch_to_buffer ub_c_switch_to_buffer +#define yy_flush_buffer ub_c_flush_buffer +#define yy_init_buffer ub_c_init_buffer +#define yy_scan_buffer ub_c_scan_buffer +#define yy_scan_bytes ub_c_scan_bytes +#define yy_scan_string ub_c_scan_string +#define yy_create_buffer ub_c_create_buffer +#define yyrestart ub_c_restart +#define yy_delete_buffer ub_c_delete_buffer +#define yypop_buffer_state ub_c_pop_buffer_state +#define yypush_buffer_state ub_c_push_buffer_state +#define yyunput ub_c_unput +#define yyset_in ub_c_set_in +#define yyget_in ub_c_get_in +#define yyset_out ub_c_set_out +#define yyget_out ub_c_get_out +#define yyget_lineno ub_c_get_lineno +#define yyset_lineno ub_c_set_lineno +#define yyset_debug ub_c_set_debug +#define yyget_debug ub_c_get_debug +#define yy_flex_debug ub_c_flex_debug +#define yylex_destroy ub_c_lex_destroy +#define yyfree ub_c_free +#define yyrealloc ub_c_realloc +#define yyalloc ub_c_alloc +#define yymalloc ub_c_malloc +#define yyget_leng ub_c_get_leng +#define yylineno ub_c_lineno +#define yyget_text ub_c_get_text + +#endif /* UTIL_CONFIGYYRENAME_H */ diff --git a/external/unbound/util/data/dname.c b/external/unbound/util/data/dname.c new file mode 100644 index 000000000..76f2e6458 --- /dev/null +++ b/external/unbound/util/data/dname.c @@ -0,0 +1,782 @@ +/* + * util/data/dname.h - domain name handling + * + * Copyright (c) 2007, NLnet Labs. All rights reserved. + * + * This software is open source. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * Neither the name of the NLNET LABS nor the names of its contributors may + * be used to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/** + * \file + * + * This file contains domain name handling functions. + */ + +#include "config.h" +#include <ctype.h> +#include "util/data/dname.h" +#include "util/data/msgparse.h" +#include "util/log.h" +#include "util/storage/lookup3.h" +#include "ldns/sbuffer.h" + +/* determine length of a dname in buffer, no compression pointers allowed */ +size_t +query_dname_len(sldns_buffer* query) +{ + size_t len = 0; + size_t labellen; + while(1) { + if(sldns_buffer_remaining(query) < 1) + return 0; /* parse error, need label len */ + labellen = sldns_buffer_read_u8(query); + if(labellen&0xc0) + return 0; /* no compression allowed in queries */ + len += labellen + 1; + if(len > LDNS_MAX_DOMAINLEN) + return 0; /* too long */ + if(labellen == 0) + return len; + if(sldns_buffer_remaining(query) < labellen) + return 0; /* parse error, need content */ + sldns_buffer_skip(query, (ssize_t)labellen); + } +} + +size_t +dname_valid(uint8_t* dname, size_t maxlen) +{ + size_t len = 0; + size_t labellen; + labellen = *dname++; + while(labellen) { + if(labellen&0xc0) + return 0; /* no compression ptrs allowed */ + len += labellen + 1; + if(len >= LDNS_MAX_DOMAINLEN) + return 0; /* too long */ + if(len > maxlen) + return 0; /* does not fit in memory allocation */ + dname += labellen; + labellen = *dname++; + } + len += 1; + if(len > maxlen) + return 0; /* does not fit in memory allocation */ + return len; +} + +/** compare uncompressed, noncanonical, registers are hints for speed */ +int +query_dname_compare(register uint8_t* d1, register uint8_t* d2) +{ + register uint8_t lab1, lab2; + log_assert(d1 && d2); + lab1 = *d1++; + lab2 = *d2++; + while( lab1 != 0 || lab2 != 0 ) { + /* compare label length */ + /* if one dname ends, it has labellength 0 */ + if(lab1 != lab2) { + if(lab1 < lab2) + return -1; + return 1; + } + log_assert(lab1 == lab2 && lab1 != 0); + /* compare lowercased labels. */ + while(lab1--) { + /* compare bytes first for speed */ + if(*d1 != *d2 && + tolower((int)*d1) != tolower((int)*d2)) { + if(tolower((int)*d1) < tolower((int)*d2)) + return -1; + return 1; + } + d1++; + d2++; + } + /* next pair of labels. */ + lab1 = *d1++; + lab2 = *d2++; + } + return 0; +} + +void +query_dname_tolower(uint8_t* dname) +{ + /* the dname is stored uncompressed */ + uint8_t labellen; + labellen = *dname; + while(labellen) { + dname++; + while(labellen--) { + *dname = (uint8_t)tolower((int)*dname); + dname++; + } + labellen = *dname; + } +} + +void +pkt_dname_tolower(sldns_buffer* pkt, uint8_t* dname) +{ + uint8_t lablen; + int count = 0; + if(dname >= sldns_buffer_end(pkt)) + return; + lablen = *dname++; + while(lablen) { + if(LABEL_IS_PTR(lablen)) { + if((size_t)PTR_OFFSET(lablen, *dname) + >= sldns_buffer_limit(pkt)) + return; + dname = sldns_buffer_at(pkt, PTR_OFFSET(lablen, *dname)); + lablen = *dname++; + if(count++ > MAX_COMPRESS_PTRS) + return; + continue; + } + if(dname+lablen >= sldns_buffer_end(pkt)) + return; + while(lablen--) { + *dname = (uint8_t)tolower((int)*dname); + dname++; + } + if(dname >= sldns_buffer_end(pkt)) + return; + lablen = *dname++; + } +} + + +size_t +pkt_dname_len(sldns_buffer* pkt) +{ + size_t len = 0; + int ptrcount = 0; + uint8_t labellen; + size_t endpos = 0; + + /* read dname and determine length */ + /* check compression pointers, loops, out of bounds */ + while(1) { + /* read next label */ + if(sldns_buffer_remaining(pkt) < 1) + return 0; + labellen = sldns_buffer_read_u8(pkt); + if(LABEL_IS_PTR(labellen)) { + /* compression ptr */ + uint16_t ptr; + if(sldns_buffer_remaining(pkt) < 1) + return 0; + ptr = PTR_OFFSET(labellen, sldns_buffer_read_u8(pkt)); + if(ptrcount++ > MAX_COMPRESS_PTRS) + return 0; /* loop! */ + if(sldns_buffer_limit(pkt) <= ptr) + return 0; /* out of bounds! */ + if(!endpos) + endpos = sldns_buffer_position(pkt); + sldns_buffer_set_position(pkt, ptr); + } else { + /* label contents */ + if(labellen > 0x3f) + return 0; /* label too long */ + len += 1 + labellen; + if(len > LDNS_MAX_DOMAINLEN) + return 0; + if(labellen == 0) { + /* end of dname */ + break; + } + if(sldns_buffer_remaining(pkt) < labellen) + return 0; + sldns_buffer_skip(pkt, (ssize_t)labellen); + } + } + if(endpos) + sldns_buffer_set_position(pkt, endpos); + + return len; +} + +int +dname_pkt_compare(sldns_buffer* pkt, uint8_t* d1, uint8_t* d2) +{ + uint8_t len1, len2; + log_assert(pkt && d1 && d2); + len1 = *d1++; + len2 = *d2++; + while( len1 != 0 || len2 != 0 ) { + /* resolve ptrs */ + if(LABEL_IS_PTR(len1)) { + d1 = sldns_buffer_at(pkt, PTR_OFFSET(len1, *d1)); + len1 = *d1++; + continue; + } + if(LABEL_IS_PTR(len2)) { + d2 = sldns_buffer_at(pkt, PTR_OFFSET(len2, *d2)); + len2 = *d2++; + continue; + } + /* check label length */ + log_assert(len1 <= LDNS_MAX_LABELLEN); + log_assert(len2 <= LDNS_MAX_LABELLEN); + if(len1 != len2) { + if(len1 < len2) return -1; + return 1; + } + log_assert(len1 == len2 && len1 != 0); + /* compare labels */ + while(len1--) { + if(tolower((int)*d1++) != tolower((int)*d2++)) { + if(tolower((int)d1[-1]) < tolower((int)d2[-1])) + return -1; + return 1; + } + } + len1 = *d1++; + len2 = *d2++; + } + return 0; +} + +hashvalue_t +dname_query_hash(uint8_t* dname, hashvalue_t h) +{ + uint8_t labuf[LDNS_MAX_LABELLEN+1]; + uint8_t lablen; + int i; + + /* preserve case of query, make hash label by label */ + lablen = *dname++; + while(lablen) { + log_assert(lablen <= LDNS_MAX_LABELLEN); + labuf[0] = lablen; + i=0; + while(lablen--) + labuf[++i] = (uint8_t)tolower((int)*dname++); + h = hashlittle(labuf, labuf[0] + 1, h); + lablen = *dname++; + } + + return h; +} + +hashvalue_t +dname_pkt_hash(sldns_buffer* pkt, uint8_t* dname, hashvalue_t h) +{ + uint8_t labuf[LDNS_MAX_LABELLEN+1]; + uint8_t lablen; + int i; + + /* preserve case of query, make hash label by label */ + lablen = *dname++; + while(lablen) { + if(LABEL_IS_PTR(lablen)) { + /* follow pointer */ + dname = sldns_buffer_at(pkt, PTR_OFFSET(lablen, *dname)); + lablen = *dname++; + continue; + } + log_assert(lablen <= LDNS_MAX_LABELLEN); + labuf[0] = lablen; + i=0; + while(lablen--) + labuf[++i] = (uint8_t)tolower((int)*dname++); + h = hashlittle(labuf, labuf[0] + 1, h); + lablen = *dname++; + } + + return h; +} + +void dname_pkt_copy(sldns_buffer* pkt, uint8_t* to, uint8_t* dname) +{ + /* copy over the dname and decompress it at the same time */ + size_t len = 0; + uint8_t lablen; + lablen = *dname++; + while(lablen) { + if(LABEL_IS_PTR(lablen)) { + /* follow pointer */ + dname = sldns_buffer_at(pkt, PTR_OFFSET(lablen, *dname)); + lablen = *dname++; + continue; + } + log_assert(lablen <= LDNS_MAX_LABELLEN); + len += (size_t)lablen+1; + if(len >= LDNS_MAX_DOMAINLEN) { + *to = 0; /* end the result prematurely */ + log_err("bad dname in dname_pkt_copy"); + return; + } + *to++ = lablen; + memmove(to, dname, lablen); + dname += lablen; + to += lablen; + lablen = *dname++; + } + /* copy last \0 */ + *to = 0; +} + +void dname_print(FILE* out, struct sldns_buffer* pkt, uint8_t* dname) +{ + uint8_t lablen; + if(!out) out = stdout; + if(!dname) return; + + lablen = *dname++; + if(!lablen) + fputc('.', out); + while(lablen) { + if(LABEL_IS_PTR(lablen)) { + /* follow pointer */ + if(!pkt) { + fputs("??compressionptr??", out); + return; + } + dname = sldns_buffer_at(pkt, PTR_OFFSET(lablen, *dname)); + lablen = *dname++; + continue; + } + if(lablen > LDNS_MAX_LABELLEN) { + fputs("??extendedlabel??", out); + return; + } + while(lablen--) + fputc((int)*dname++, out); + fputc('.', out); + lablen = *dname++; + } +} + +int +dname_count_labels(uint8_t* dname) +{ + uint8_t lablen; + int labs = 1; + + lablen = *dname++; + while(lablen) { + labs++; + dname += lablen; + lablen = *dname++; + } + return labs; +} + +int +dname_count_size_labels(uint8_t* dname, size_t* size) +{ + uint8_t lablen; + int labs = 1; + size_t sz = 1; + + lablen = *dname++; + while(lablen) { + labs++; + sz += lablen+1; + dname += lablen; + lablen = *dname++; + } + *size = sz; + return labs; +} + +/** + * Compare labels in memory, lowercase while comparing. + * @param p1: label 1 + * @param p2: label 2 + * @param len: number of bytes to compare. + * @return: 0, -1, +1 comparison result. + */ +static int +memlowercmp(uint8_t* p1, uint8_t* p2, uint8_t len) +{ + while(len--) { + if(*p1 != *p2 && tolower((int)*p1) != tolower((int)*p2)) { + if(tolower((int)*p1) < tolower((int)*p2)) + return -1; + return 1; + } + p1++; + p2++; + } + return 0; +} + +int +dname_lab_cmp(uint8_t* d1, int labs1, uint8_t* d2, int labs2, int* mlabs) +{ + uint8_t len1, len2; + int atlabel = labs1; + int lastmlabs; + int lastdiff = 0; + /* first skip so that we compare same label. */ + if(labs1 > labs2) { + while(atlabel > labs2) { + len1 = *d1++; + d1 += len1; + atlabel--; + } + log_assert(atlabel == labs2); + } else if(labs1 < labs2) { + atlabel = labs2; + while(atlabel > labs1) { + len2 = *d2++; + d2 += len2; + atlabel--; + } + log_assert(atlabel == labs1); + } + lastmlabs = atlabel+1; + /* now at same label in d1 and d2, atlabel */ + /* www.example.com. */ + /* 4 3 2 1 atlabel number */ + /* repeat until at root label (which is always the same) */ + while(atlabel > 1) { + len1 = *d1++; + len2 = *d2++; + if(len1 != len2) { + log_assert(len1 != 0 && len2 != 0); + if(len1<len2) + lastdiff = -1; + else lastdiff = 1; + lastmlabs = atlabel; + d1 += len1; + d2 += len2; + } else { + /* memlowercmp is inlined here; or just like + * if((c=memlowercmp(d1, d2, len1)) != 0) { + * lastdiff = c; + * lastmlabs = atlabel; } apart from d1++,d2++ */ + while(len1) { + if(*d1 != *d2 && tolower((int)*d1) + != tolower((int)*d2)) { + if(tolower((int)*d1) < + tolower((int)*d2)) { + lastdiff = -1; + lastmlabs = atlabel; + d1 += len1; + d2 += len1; + break; + } + lastdiff = 1; + lastmlabs = atlabel; + d1 += len1; + d2 += len1; + break; /* out of memlowercmp */ + } + d1++; + d2++; + len1--; + } + } + atlabel--; + } + /* last difference atlabel number, so number of labels matching, + * at the right side, is one less. */ + *mlabs = lastmlabs-1; + if(lastdiff == 0) { + /* all labels compared were equal, check if one has more + * labels, so that example.com. > com. */ + if(labs1 > labs2) + return 1; + else if(labs1 < labs2) + return -1; + } + return lastdiff; +} + +int +dname_buffer_write(sldns_buffer* pkt, uint8_t* dname) +{ + uint8_t lablen; + + if(sldns_buffer_remaining(pkt) < 1) + return 0; + lablen = *dname++; + sldns_buffer_write_u8(pkt, lablen); + while(lablen) { + if(sldns_buffer_remaining(pkt) < (size_t)lablen+1) + return 0; + sldns_buffer_write(pkt, dname, lablen); + dname += lablen; + lablen = *dname++; + sldns_buffer_write_u8(pkt, lablen); + } + return 1; +} + +void dname_str(uint8_t* dname, char* str) +{ + size_t len = 0; + uint8_t lablen = 0; + char* s = str; + if(!dname || !*dname) { + *s++ = '.'; + *s = 0; + return; + } + lablen = *dname++; + while(lablen) { + if(lablen > LDNS_MAX_LABELLEN) { + *s++ = '#'; + *s = 0; + return; + } + len += lablen+1; + if(len >= LDNS_MAX_DOMAINLEN-1) { + *s++ = '&'; + *s = 0; + return; + } + while(lablen--) { + if(isalnum((int)*dname) + || *dname == '-' || *dname == '_' + || *dname == '*') + *s++ = *(char*)dname++; + else { + *s++ = '?'; + dname++; + } + } + *s++ = '.'; + lablen = *dname++; + } + *s = 0; +} + +int +dname_strict_subdomain(uint8_t* d1, int labs1, uint8_t* d2, int labs2) +{ + int m; + /* check subdomain: d1: www.example.com. and d2: example.com. */ + if(labs2 >= labs1) + return 0; + if(dname_lab_cmp(d1, labs1, d2, labs2, &m) > 0) { + /* subdomain if all labels match */ + return (m == labs2); + } + return 0; +} + +int +dname_strict_subdomain_c(uint8_t* d1, uint8_t* d2) +{ + return dname_strict_subdomain(d1, dname_count_labels(d1), d2, + dname_count_labels(d2)); +} + +int +dname_subdomain_c(uint8_t* d1, uint8_t* d2) +{ + int m; + /* check subdomain: d1: www.example.com. and d2: example.com. */ + /* or d1: example.com. and d2: example.com. */ + int labs1 = dname_count_labels(d1); + int labs2 = dname_count_labels(d2); + if(labs2 > labs1) + return 0; + if(dname_lab_cmp(d1, labs1, d2, labs2, &m) < 0) { + /* must have been example.com , www.example.com - wrong */ + /* or otherwise different dnames */ + return 0; + } + return (m == labs2); +} + +int +dname_is_root(uint8_t* dname) +{ + uint8_t len; + log_assert(dname); + len = dname[0]; + log_assert(!LABEL_IS_PTR(len)); + return (len == 0); +} + +void +dname_remove_label(uint8_t** dname, size_t* len) +{ + size_t lablen; + log_assert(dname && *dname && len); + lablen = (*dname)[0]; + log_assert(!LABEL_IS_PTR(lablen)); + log_assert(*len > lablen); + if(lablen == 0) + return; /* do not modify root label */ + *len -= lablen+1; + *dname += lablen+1; +} + +void +dname_remove_labels(uint8_t** dname, size_t* len, int n) +{ + int i; + for(i=0; i<n; i++) + dname_remove_label(dname, len); +} + +int +dname_signame_label_count(uint8_t* dname) +{ + uint8_t lablen; + int count = 0; + if(!*dname) + return 0; + if(dname[0] == 1 && dname[1] == '*') + dname += 2; + lablen = dname[0]; + while(lablen) { + count++; + dname += lablen; + dname += 1; + lablen = dname[0]; + } + return count; +} + +int +dname_is_wild(uint8_t* dname) +{ + return (dname[0] == 1 && dname[1] == '*'); +} + +/** + * Compare labels in memory, lowercase while comparing. + * Returns canonical order for labels. If all is equal, the + * shortest is first. + * + * @param p1: label 1 + * @param len1: length of label 1. + * @param p2: label 2 + * @param len2: length of label 2. + * @return: 0, -1, +1 comparison result. + */ +static int +memcanoncmp(uint8_t* p1, uint8_t len1, uint8_t* p2, uint8_t len2) +{ + uint8_t min = (len1<len2)?len1:len2; + int c = memlowercmp(p1, p2, min); + if(c != 0) + return c; + /* equal, see who is shortest */ + if(len1 < len2) + return -1; + if(len1 > len2) + return 1; + return 0; +} + + +int +dname_canon_lab_cmp(uint8_t* d1, int labs1, uint8_t* d2, int labs2, int* mlabs) +{ + /* like dname_lab_cmp, but with different label comparison, + * empty character sorts before \000. + * So ylyly is before z. */ + uint8_t len1, len2; + int atlabel = labs1; + int lastmlabs; + int lastdiff = 0; + int c; + /* first skip so that we compare same label. */ + if(labs1 > labs2) { + while(atlabel > labs2) { + len1 = *d1++; + d1 += len1; + atlabel--; + } + log_assert(atlabel == labs2); + } else if(labs1 < labs2) { + atlabel = labs2; + while(atlabel > labs1) { + len2 = *d2++; + d2 += len2; + atlabel--; + } + log_assert(atlabel == labs1); + } + lastmlabs = atlabel+1; + /* now at same label in d1 and d2, atlabel */ + /* www.example.com. */ + /* 4 3 2 1 atlabel number */ + /* repeat until at root label (which is always the same) */ + while(atlabel > 1) { + len1 = *d1++; + len2 = *d2++; + + if((c=memcanoncmp(d1, len1, d2, len2)) != 0) { + if(c<0) + lastdiff = -1; + else lastdiff = 1; + lastmlabs = atlabel; + } + + d1 += len1; + d2 += len2; + atlabel--; + } + /* last difference atlabel number, so number of labels matching, + * at the right side, is one less. */ + *mlabs = lastmlabs-1; + if(lastdiff == 0) { + /* all labels compared were equal, check if one has more + * labels, so that example.com. > com. */ + if(labs1 > labs2) + return 1; + else if(labs1 < labs2) + return -1; + } + return lastdiff; +} + +int +dname_canonical_compare(uint8_t* d1, uint8_t* d2) +{ + int labs1, labs2, m; + labs1 = dname_count_labels(d1); + labs2 = dname_count_labels(d2); + return dname_canon_lab_cmp(d1, labs1, d2, labs2, &m); +} + +uint8_t* dname_get_shared_topdomain(uint8_t* d1, uint8_t* d2) +{ + int labs1, labs2, m; + size_t len = LDNS_MAX_DOMAINLEN; + labs1 = dname_count_labels(d1); + labs2 = dname_count_labels(d2); + (void)dname_lab_cmp(d1, labs1, d2, labs2, &m); + dname_remove_labels(&d1, &len, labs1-m); + return d1; +} diff --git a/external/unbound/util/data/dname.h b/external/unbound/util/data/dname.h new file mode 100644 index 000000000..ae2fbadc1 --- /dev/null +++ b/external/unbound/util/data/dname.h @@ -0,0 +1,304 @@ +/* + * util/data/dname.h - domain name routines + * + * Copyright (c) 2007, NLnet Labs. All rights reserved. + * + * This software is open source. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * Neither the name of the NLNET LABS nor the names of its contributors may + * be used to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/** + * \file + * + * This file contains functions to deal with domain names (dnames). + * + * Some of the functions deal with domain names as a wireformat buffer, + * with a length. + */ + +#ifndef UTIL_DATA_DNAME_H +#define UTIL_DATA_DNAME_H +#include "util/storage/lruhash.h" +struct sldns_buffer; + +/** max number of compression ptrs to follow */ +#define MAX_COMPRESS_PTRS 256 + +/** + * Determine length of dname in buffer, no compression ptrs allowed, + * @param query: the ldns buffer, current position at start of dname. + * at end, position is at end of the dname. + * @return: 0 on parse failure, or length including ending 0 of dname. + */ +size_t query_dname_len(struct sldns_buffer* query); + +/** + * Determine if dname in memory is correct. no compression ptrs allowed. + * @param dname: where dname starts in memory. + * @param len: dname is not allowed to exceed this length (i.e. of allocation). + * @return length of dname if dname is ok, 0 on a parse error. + */ +size_t dname_valid(uint8_t* dname, size_t len); + +/** lowercase query dname */ +void query_dname_tolower(uint8_t* dname); + +/** + * lowercase pkt dname (follows compression pointers) + * @param pkt: the packet, used to follow compression pointers. Position + * is unchanged. + * @param dname: start of dname in packet. + */ +void pkt_dname_tolower(struct sldns_buffer* pkt, uint8_t* dname); + +/** + * Compare query dnames (uncompressed storage). The Dnames passed do not + * have to be lowercased, comparison routine does this. + * + * This routine is special, in that the comparison that it does corresponds + * with the canonical comparison needed when comparing dnames inside rdata + * for RR types that need canonicalization. That means that the first byte + * that is smaller (possibly after lowercasing) makes an RR smaller, or the + * shortest name makes an RR smaller. + * + * This routine does not compute the canonical order needed for NSEC + * processing. + * + * Dnames have to be valid format. + * @param d1: dname to compare + * @param d2: dname to compare + * @return: -1, 0, or +1 depending on comparison results. + * Sort order is first difference found. not the canonical ordering. + */ +int query_dname_compare(uint8_t* d1, uint8_t* d2); + +/** + * Determine correct, compressed, dname present in packet. + * Checks for parse errors. + * @param pkt: packet to read from (from current start position). + * @return: 0 on parse error. + * At exit the position is right after the (compressed) dname. + * Compression pointers are followed and checked for loops. + * The uncompressed wireformat length is returned. + */ +size_t pkt_dname_len(struct sldns_buffer* pkt); + +/** + * Compare dnames in packet (compressed). Dnames must be valid. + * routine performs lowercasing, so the packet casing is preserved. + * @param pkt: packet, used to resolve compression pointers. + * @param d1: dname to compare + * @param d2: dname to compare + * @return: -1, 0, or +1 depending on comparison results. + * Sort order is first difference found. not the canonical ordering. + */ +int dname_pkt_compare(struct sldns_buffer* pkt, uint8_t* d1, uint8_t* d2); + +/** + * Hash dname, label by label, lowercasing, into hashvalue. + * Dname in query format (not compressed). + * @param dname: dname to hash. + * @param h: initial hash value. + * @return: result hash value. + */ +hashvalue_t dname_query_hash(uint8_t* dname, hashvalue_t h); + +/** + * Hash dname, label by label, lowercasing, into hashvalue. + * Dname in pkt format (compressed). + * @param pkt: packet, for resolving compression pointers. + * @param dname: dname to hash, pointer to the pkt buffer. + * Must be valid format. No loops, etc. + * @param h: initial hash value. + * @return: result hash value. + * Result is the same as dname_query_hash, even if compression is used. + */ +hashvalue_t dname_pkt_hash(struct sldns_buffer* pkt, uint8_t* dname, hashvalue_t h); + +/** + * Copy over a valid dname and decompress it. + * @param pkt: packet to resolve compression pointers. + * @param to: buffer of size from pkt_len function to hold result. + * @param dname: pointer into packet where dname starts. + */ +void dname_pkt_copy(struct sldns_buffer* pkt, uint8_t* to, uint8_t* dname); + +/** + * Copy over a valid dname to a packet. + * @param pkt: packet to copy to. + * @param dname: dname to copy. + * @return: 0 if not enough space in buffer. + */ +int dname_buffer_write(struct sldns_buffer* pkt, uint8_t* dname); + +/** + * Count the number of labels in an uncompressed dname in memory. + * @param dname: pointer to uncompressed dname. + * @return: count of labels, including root label, "com." has 2 labels. + */ +int dname_count_labels(uint8_t* dname); + +/** + * Count labels and dname length both, for uncompressed dname in memory. + * @param dname: pointer to uncompressed dname. + * @param size: length of dname, including root label. + * @return: count of labels, including root label, "com." has 2 labels. + */ +int dname_count_size_labels(uint8_t* dname, size_t* size); + +/** + * Compare dnames, sorted not canonical, but by label. + * Such that zone contents follows zone apex. + * @param d1: first dname. pointer to uncompressed wireformat. + * @param labs1: number of labels in first dname. + * @param d2: second dname. pointer to uncompressed wireformat. + * @param labs2: number of labels in second dname. + * @param mlabs: number of labels that matched exactly (the shared topdomain). + * @return: 0 for equal, -1 smaller, or +1 d1 larger than d2. + */ +int dname_lab_cmp(uint8_t* d1, int labs1, uint8_t* d2, int labs2, int* mlabs); + +/** + * See if domain name d1 is a strict subdomain of d2. + * That is a subdomain, but not equal. + * @param d1: domain name, uncompressed wireformat + * @param labs1: number of labels in d1, including root label. + * @param d2: domain name, uncompressed wireformat + * @param labs2: number of labels in d2, including root label. + * @return true if d1 is a subdomain of d2, but not equal to d2. + */ +int dname_strict_subdomain(uint8_t* d1, int labs1, uint8_t* d2, int labs2); + +/** + * Like dname_strict_subdomain but counts labels + * @param d1: domain name, uncompressed wireformat + * @param d2: domain name, uncompressed wireformat + * @return true if d1 is a subdomain of d2, but not equal to d2. + */ +int dname_strict_subdomain_c(uint8_t* d1, uint8_t* d2); + +/** + * Counts labels. Tests is d1 is a subdomain of d2. + * @param d1: domain name, uncompressed wireformat + * @param d2: domain name, uncompressed wireformat + * @return true if d1 is a subdomain of d2. + */ +int dname_subdomain_c(uint8_t* d1, uint8_t* d2); + +/** + * Debug helper. Print wireformat dname to output. + * @param out: like stdout or a file. + * @param pkt: if not NULL, the packet for resolving compression ptrs. + * @param dname: pointer to (start of) dname. + */ +void dname_print(FILE* out, struct sldns_buffer* pkt, uint8_t* dname); + +/** + * Debug helper. Print dname to given string buffer (string buffer must + * be at least 255 chars + 1 for the 0, in printable form. + * This may lose information (? for nonprintable characters, or & if + * the name is too long, # for a bad label length). + * @param dname: uncompressed wireformat. + * @param str: buffer of 255+1 length. + */ +void dname_str(uint8_t* dname, char* str); + +/** + * Returns true if the uncompressed wireformat dname is the root "." + * @param dname: the dname to check + * @return true if ".", false if not. + */ +int dname_is_root(uint8_t* dname); + +/** + * Snip off first label from a dname, returning the parent zone. + * @param dname: from what to strip off. uncompressed wireformat. + * @param len: length, adjusted to become less. + * @return stripped off, or "." if input was ".". + */ +void dname_remove_label(uint8_t** dname, size_t* len); + +/** + * Snip off first N labels from a dname, returning the parent zone. + * @param dname: from what to strip off. uncompressed wireformat. + * @param len: length, adjusted to become less. + * @param n: number of labels to strip off (from the left). + * if 0, nothing happens. + * @return stripped off, or "." if input was ".". + */ +void dname_remove_labels(uint8_t** dname, size_t* len, int n); + +/** + * Count labels for the RRSIG signature label field. + * Like a normal labelcount, but "*" wildcard and "." root are not counted. + * @param dname: valid uncompressed wireformat. + * @return number of labels like in RRSIG; '*' and '.' are not counted. + */ +int dname_signame_label_count(uint8_t* dname); + +/** + * Return true if the label is a wildcard, *.example.com. + * @param dname: valid uncompressed wireformat. + * @return true if wildcard, or false. + */ +int dname_is_wild(uint8_t* dname); + +/** + * Compare dnames, Canonical in rfc4034 sense, but by label. + * Such that zone contents follows zone apex. + * + * @param d1: first dname. pointer to uncompressed wireformat. + * @param labs1: number of labels in first dname. + * @param d2: second dname. pointer to uncompressed wireformat. + * @param labs2: number of labels in second dname. + * @param mlabs: number of labels that matched exactly (the shared topdomain). + * @return: 0 for equal, -1 smaller, or +1 d1 larger than d2. + */ +int dname_canon_lab_cmp(uint8_t* d1, int labs1, uint8_t* d2, int labs2, + int* mlabs); + +/** + * Canonical dname compare. Takes care of counting labels. + * Per rfc 4034 canonical order. + * + * @param d1: first dname. pointer to uncompressed wireformat. + * @param d2: second dname. pointer to uncompressed wireformat. + * @return: 0 for equal, -1 smaller, or +1 d1 larger than d2. + */ +int dname_canonical_compare(uint8_t* d1, uint8_t* d2); + +/** + * Get the shared topdomain between two names. Root "." or longer. + * @param d1: first dname. pointer to uncompressed wireformat. + * @param d2: second dname. pointer to uncompressed wireformat. + * @return pointer to shared topdomain. Ptr to a part of d1. + */ +uint8_t* dname_get_shared_topdomain(uint8_t* d1, uint8_t* d2); + +#endif /* UTIL_DATA_DNAME_H */ diff --git a/external/unbound/util/data/msgencode.c b/external/unbound/util/data/msgencode.c new file mode 100644 index 000000000..26b5deabe --- /dev/null +++ b/external/unbound/util/data/msgencode.c @@ -0,0 +1,841 @@ +/* + * util/data/msgencode.c - Encode DNS messages, queries and replies. + * + * Copyright (c) 2007, NLnet Labs. All rights reserved. + * + * This software is open source. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * Neither the name of the NLNET LABS nor the names of its contributors may + * be used to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/** + * \file + * + * This file contains a routines to encode DNS messages. + */ + +#include "config.h" +#include "util/data/msgencode.h" +#include "util/data/msgreply.h" +#include "util/data/msgparse.h" +#include "util/data/dname.h" +#include "util/log.h" +#include "util/regional.h" +#include "util/net_help.h" +#include "ldns/sbuffer.h" + +/** return code that means the function ran out of memory. negative so it does + * not conflict with DNS rcodes. */ +#define RETVAL_OUTMEM -2 +/** return code that means the data did not fit (completely) in the packet */ +#define RETVAL_TRUNC -4 +/** return code that means all is peachy keen. Equal to DNS rcode NOERROR */ +#define RETVAL_OK 0 + +/** + * Data structure to help domain name compression in outgoing messages. + * A tree of dnames and their offsets in the packet is kept. + * It is kept sorted, not canonical, but by label at least, so that after + * a lookup of a name you know its closest match, and the parent from that + * closest match. These are possible compression targets. + * + * It is a binary tree, not a rbtree or balanced tree, as the effort + * of keeping it balanced probably outweighs usefulness (given typical + * DNS packet size). + */ +struct compress_tree_node { + /** left node in tree, all smaller to this */ + struct compress_tree_node* left; + /** right node in tree, all larger than this */ + struct compress_tree_node* right; + + /** the parent node - not for tree, but zone parent. One less label */ + struct compress_tree_node* parent; + /** the domain name for this node. Pointer to uncompressed memory. */ + uint8_t* dname; + /** number of labels in domain name, kept to help compare func. */ + int labs; + /** offset in packet that points to this dname */ + size_t offset; +}; + +/** + * Find domain name in tree, returns exact and closest match. + * @param tree: root of tree. + * @param dname: pointer to uncompressed dname. + * @param labs: number of labels in domain name. + * @param match: closest or exact match. + * guaranteed to be smaller or equal to the sought dname. + * can be null if the tree is empty. + * @param matchlabels: number of labels that match with closest match. + * can be zero is there is no match. + * @param insertpt: insert location for dname, if not found. + * @return: 0 if no exact match. + */ +static int +compress_tree_search(struct compress_tree_node** tree, uint8_t* dname, + int labs, struct compress_tree_node** match, int* matchlabels, + struct compress_tree_node*** insertpt) +{ + int c, n, closen=0; + struct compress_tree_node* p = *tree; + struct compress_tree_node* close = 0; + struct compress_tree_node** prev = tree; + while(p) { + if((c = dname_lab_cmp(dname, labs, p->dname, p->labs, &n)) + == 0) { + *matchlabels = n; + *match = p; + return 1; + } + if(c<0) { + prev = &p->left; + p = p->left; + } else { + closen = n; + close = p; /* p->dname is smaller than dname */ + prev = &p->right; + p = p->right; + } + } + *insertpt = prev; + *matchlabels = closen; + *match = close; + return 0; +} + +/** + * Lookup a domain name in compression tree. + * @param tree: root of tree (not the node with '.'). + * @param dname: pointer to uncompressed dname. + * @param labs: number of labels in domain name. + * @param insertpt: insert location for dname, if not found. + * @return: 0 if not found or compress treenode with best compression. + */ +static struct compress_tree_node* +compress_tree_lookup(struct compress_tree_node** tree, uint8_t* dname, + int labs, struct compress_tree_node*** insertpt) +{ + struct compress_tree_node* p; + int m; + if(labs <= 1) + return 0; /* do not compress root node */ + if(compress_tree_search(tree, dname, labs, &p, &m, insertpt)) { + /* exact match */ + return p; + } + /* return some ancestor of p that compresses well. */ + if(m>1) { + /* www.example.com. (labs=4) matched foo.example.com.(labs=4) + * then matchcount = 3. need to go up. */ + while(p && p->labs > m) + p = p->parent; + return p; + } + return 0; +} + +/** + * Create node for domain name compression tree. + * @param dname: pointer to uncompressed dname (stored in tree). + * @param labs: number of labels in dname. + * @param offset: offset into packet for dname. + * @param region: how to allocate memory for new node. + * @return new node or 0 on malloc failure. + */ +static struct compress_tree_node* +compress_tree_newnode(uint8_t* dname, int labs, size_t offset, + struct regional* region) +{ + struct compress_tree_node* n = (struct compress_tree_node*) + regional_alloc(region, sizeof(struct compress_tree_node)); + if(!n) return 0; + n->left = 0; + n->right = 0; + n->parent = 0; + n->dname = dname; + n->labs = labs; + n->offset = offset; + return n; +} + +/** + * Store domain name and ancestors into compression tree. + * @param dname: pointer to uncompressed dname (stored in tree). + * @param labs: number of labels in dname. + * @param offset: offset into packet for dname. + * @param region: how to allocate memory for new node. + * @param closest: match from previous lookup, used to compress dname. + * may be NULL if no previous match. + * if the tree has an ancestor of dname already, this must be it. + * @param insertpt: where to insert the dname in tree. + * @return: 0 on memory error. + */ +static int +compress_tree_store(uint8_t* dname, int labs, size_t offset, + struct regional* region, struct compress_tree_node* closest, + struct compress_tree_node** insertpt) +{ + uint8_t lablen; + struct compress_tree_node* newnode; + struct compress_tree_node* prevnode = NULL; + int uplabs = labs-1; /* does not store root in tree */ + if(closest) uplabs = labs - closest->labs; + log_assert(uplabs >= 0); + /* algorithms builds up a vine of dname-labels to hang into tree */ + while(uplabs--) { + if(offset > PTR_MAX_OFFSET) { + /* insertion failed, drop vine */ + return 1; /* compression pointer no longer useful */ + } + if(!(newnode = compress_tree_newnode(dname, labs, offset, + region))) { + /* insertion failed, drop vine */ + return 0; + } + + if(prevnode) { + /* chain nodes together, last one has one label more, + * so is larger than newnode, thus goes right. */ + newnode->right = prevnode; + prevnode->parent = newnode; + } + + /* next label */ + lablen = *dname++; + dname += lablen; + offset += lablen+1; + prevnode = newnode; + labs--; + } + /* if we have a vine, hang the vine into the tree */ + if(prevnode) { + *insertpt = prevnode; + prevnode->parent = closest; + } + return 1; +} + +/** compress a domain name */ +static int +write_compressed_dname(sldns_buffer* pkt, uint8_t* dname, int labs, + struct compress_tree_node* p) +{ + /* compress it */ + int labcopy = labs - p->labs; + uint8_t lablen; + uint16_t ptr; + + if(labs == 1) { + /* write root label */ + if(sldns_buffer_remaining(pkt) < 1) + return 0; + sldns_buffer_write_u8(pkt, 0); + return 1; + } + + /* copy the first couple of labels */ + while(labcopy--) { + lablen = *dname++; + if(sldns_buffer_remaining(pkt) < (size_t)lablen+1) + return 0; + sldns_buffer_write_u8(pkt, lablen); + sldns_buffer_write(pkt, dname, lablen); + dname += lablen; + } + /* insert compression ptr */ + if(sldns_buffer_remaining(pkt) < 2) + return 0; + ptr = PTR_CREATE(p->offset); + sldns_buffer_write_u16(pkt, ptr); + return 1; +} + +/** compress owner name of RR, return RETVAL_OUTMEM RETVAL_TRUNC */ +static int +compress_owner(struct ub_packed_rrset_key* key, sldns_buffer* pkt, + struct regional* region, struct compress_tree_node** tree, + size_t owner_pos, uint16_t* owner_ptr, int owner_labs) +{ + struct compress_tree_node* p; + struct compress_tree_node** insertpt; + if(!*owner_ptr) { + /* compress first time dname */ + if((p = compress_tree_lookup(tree, key->rk.dname, + owner_labs, &insertpt))) { + if(p->labs == owner_labs) + /* avoid ptr chains, since some software is + * not capable of decoding ptr after a ptr. */ + *owner_ptr = htons(PTR_CREATE(p->offset)); + if(!write_compressed_dname(pkt, key->rk.dname, + owner_labs, p)) + return RETVAL_TRUNC; + /* check if typeclass+4 ttl + rdatalen is available */ + if(sldns_buffer_remaining(pkt) < 4+4+2) + return RETVAL_TRUNC; + } else { + /* no compress */ + if(sldns_buffer_remaining(pkt) < key->rk.dname_len+4+4+2) + return RETVAL_TRUNC; + sldns_buffer_write(pkt, key->rk.dname, + key->rk.dname_len); + if(owner_pos <= PTR_MAX_OFFSET) + *owner_ptr = htons(PTR_CREATE(owner_pos)); + } + if(!compress_tree_store(key->rk.dname, owner_labs, + owner_pos, region, p, insertpt)) + return RETVAL_OUTMEM; + } else { + /* always compress 2nd-further RRs in RRset */ + if(owner_labs == 1) { + if(sldns_buffer_remaining(pkt) < 1+4+4+2) + return RETVAL_TRUNC; + sldns_buffer_write_u8(pkt, 0); + } else { + if(sldns_buffer_remaining(pkt) < 2+4+4+2) + return RETVAL_TRUNC; + sldns_buffer_write(pkt, owner_ptr, 2); + } + } + return RETVAL_OK; +} + +/** compress any domain name to the packet, return RETVAL_* */ +static int +compress_any_dname(uint8_t* dname, sldns_buffer* pkt, int labs, + struct regional* region, struct compress_tree_node** tree) +{ + struct compress_tree_node* p; + struct compress_tree_node** insertpt = NULL; + size_t pos = sldns_buffer_position(pkt); + if((p = compress_tree_lookup(tree, dname, labs, &insertpt))) { + if(!write_compressed_dname(pkt, dname, labs, p)) + return RETVAL_TRUNC; + } else { + if(!dname_buffer_write(pkt, dname)) + return RETVAL_TRUNC; + } + if(!compress_tree_store(dname, labs, pos, region, p, insertpt)) + return RETVAL_OUTMEM; + return RETVAL_OK; +} + +/** return true if type needs domain name compression in rdata */ +static const sldns_rr_descriptor* +type_rdata_compressable(struct ub_packed_rrset_key* key) +{ + uint16_t t = ntohs(key->rk.type); + if(sldns_rr_descript(t) && + sldns_rr_descript(t)->_compress == LDNS_RR_COMPRESS) + return sldns_rr_descript(t); + return 0; +} + +/** compress domain names in rdata, return RETVAL_* */ +static int +compress_rdata(sldns_buffer* pkt, uint8_t* rdata, size_t todolen, + struct regional* region, struct compress_tree_node** tree, + const sldns_rr_descriptor* desc) +{ + int labs, r, rdf = 0; + size_t dname_len, len, pos = sldns_buffer_position(pkt); + uint8_t count = desc->_dname_count; + + sldns_buffer_skip(pkt, 2); /* rdata len fill in later */ + /* space for rdatalen checked for already */ + rdata += 2; + todolen -= 2; + while(todolen > 0 && count) { + switch(desc->_wireformat[rdf]) { + case LDNS_RDF_TYPE_DNAME: + labs = dname_count_size_labels(rdata, &dname_len); + if((r=compress_any_dname(rdata, pkt, labs, region, + tree)) != RETVAL_OK) + return r; + rdata += dname_len; + todolen -= dname_len; + count--; + len = 0; + break; + case LDNS_RDF_TYPE_STR: + len = *rdata + 1; + break; + default: + len = get_rdf_size(desc->_wireformat[rdf]); + } + if(len) { + /* copy over */ + if(sldns_buffer_remaining(pkt) < len) + return RETVAL_TRUNC; + sldns_buffer_write(pkt, rdata, len); + todolen -= len; + rdata += len; + } + rdf++; + } + /* copy remainder */ + if(todolen > 0) { + if(sldns_buffer_remaining(pkt) < todolen) + return RETVAL_TRUNC; + sldns_buffer_write(pkt, rdata, todolen); + } + + /* set rdata len */ + sldns_buffer_write_u16_at(pkt, pos, sldns_buffer_position(pkt)-pos-2); + return RETVAL_OK; +} + +/** Returns true if RR type should be included */ +static int +rrset_belongs_in_reply(sldns_pkt_section s, uint16_t rrtype, uint16_t qtype, + int dnssec) +{ + if(dnssec) + return 1; + /* skip non DNSSEC types, except if directly queried for */ + if(s == LDNS_SECTION_ANSWER) { + if(qtype == LDNS_RR_TYPE_ANY || qtype == rrtype) + return 1; + } + /* check DNSSEC-ness */ + switch(rrtype) { + case LDNS_RR_TYPE_SIG: + case LDNS_RR_TYPE_KEY: + case LDNS_RR_TYPE_NXT: + case LDNS_RR_TYPE_DS: + case LDNS_RR_TYPE_RRSIG: + case LDNS_RR_TYPE_NSEC: + case LDNS_RR_TYPE_DNSKEY: + case LDNS_RR_TYPE_NSEC3: + case LDNS_RR_TYPE_NSEC3PARAMS: + return 0; + } + return 1; +} + +/** store rrset in buffer in wireformat, return RETVAL_* */ +static int +packed_rrset_encode(struct ub_packed_rrset_key* key, sldns_buffer* pkt, + uint16_t* num_rrs, time_t timenow, struct regional* region, + int do_data, int do_sig, struct compress_tree_node** tree, + sldns_pkt_section s, uint16_t qtype, int dnssec, size_t rr_offset) +{ + size_t i, j, owner_pos; + int r, owner_labs; + uint16_t owner_ptr = 0; + struct packed_rrset_data* data = (struct packed_rrset_data*) + key->entry.data; + + /* does this RR type belong in the answer? */ + if(!rrset_belongs_in_reply(s, ntohs(key->rk.type), qtype, dnssec)) + return RETVAL_OK; + + owner_labs = dname_count_labels(key->rk.dname); + owner_pos = sldns_buffer_position(pkt); + + if(do_data) { + const sldns_rr_descriptor* c = type_rdata_compressable(key); + for(i=0; i<data->count; i++) { + /* rrset roundrobin */ + j = (i + rr_offset) % data->count; + if((r=compress_owner(key, pkt, region, tree, + owner_pos, &owner_ptr, owner_labs)) + != RETVAL_OK) + return r; + sldns_buffer_write(pkt, &key->rk.type, 2); + sldns_buffer_write(pkt, &key->rk.rrset_class, 2); + if(data->rr_ttl[j] < timenow) + sldns_buffer_write_u32(pkt, 0); + else sldns_buffer_write_u32(pkt, + data->rr_ttl[j]-timenow); + if(c) { + if((r=compress_rdata(pkt, data->rr_data[j], + data->rr_len[j], region, tree, c)) + != RETVAL_OK) + return r; + } else { + if(sldns_buffer_remaining(pkt) < data->rr_len[j]) + return RETVAL_TRUNC; + sldns_buffer_write(pkt, data->rr_data[j], + data->rr_len[j]); + } + } + } + /* insert rrsigs */ + if(do_sig && dnssec) { + size_t total = data->count+data->rrsig_count; + for(i=data->count; i<total; i++) { + if(owner_ptr && owner_labs != 1) { + if(sldns_buffer_remaining(pkt) < + 2+4+4+data->rr_len[i]) + return RETVAL_TRUNC; + sldns_buffer_write(pkt, &owner_ptr, 2); + } else { + if((r=compress_any_dname(key->rk.dname, + pkt, owner_labs, region, tree)) + != RETVAL_OK) + return r; + if(sldns_buffer_remaining(pkt) < + 4+4+data->rr_len[i]) + return RETVAL_TRUNC; + } + sldns_buffer_write_u16(pkt, LDNS_RR_TYPE_RRSIG); + sldns_buffer_write(pkt, &key->rk.rrset_class, 2); + if(data->rr_ttl[i] < timenow) + sldns_buffer_write_u32(pkt, 0); + else sldns_buffer_write_u32(pkt, + data->rr_ttl[i]-timenow); + /* rrsig rdata cannot be compressed, perform 100+ byte + * memcopy. */ + sldns_buffer_write(pkt, data->rr_data[i], + data->rr_len[i]); + } + } + /* change rrnum only after we are sure it fits */ + if(do_data) + *num_rrs += data->count; + if(do_sig && dnssec) + *num_rrs += data->rrsig_count; + + return RETVAL_OK; +} + +/** store msg section in wireformat buffer, return RETVAL_* */ +static int +insert_section(struct reply_info* rep, size_t num_rrsets, uint16_t* num_rrs, + sldns_buffer* pkt, size_t rrsets_before, time_t timenow, + struct regional* region, struct compress_tree_node** tree, + sldns_pkt_section s, uint16_t qtype, int dnssec, size_t rr_offset) +{ + int r; + size_t i, setstart; + *num_rrs = 0; + if(s != LDNS_SECTION_ADDITIONAL) { + if(s == LDNS_SECTION_ANSWER && qtype == LDNS_RR_TYPE_ANY) + dnssec = 1; /* include all types in ANY answer */ + for(i=0; i<num_rrsets; i++) { + setstart = sldns_buffer_position(pkt); + if((r=packed_rrset_encode(rep->rrsets[rrsets_before+i], + pkt, num_rrs, timenow, region, 1, 1, tree, + s, qtype, dnssec, rr_offset)) + != RETVAL_OK) { + /* Bad, but if due to size must set TC bit */ + /* trim off the rrset neatly. */ + sldns_buffer_set_position(pkt, setstart); + return r; + } + } + } else { + for(i=0; i<num_rrsets; i++) { + setstart = sldns_buffer_position(pkt); + if((r=packed_rrset_encode(rep->rrsets[rrsets_before+i], + pkt, num_rrs, timenow, region, 1, 0, tree, + s, qtype, dnssec, rr_offset)) + != RETVAL_OK) { + sldns_buffer_set_position(pkt, setstart); + return r; + } + } + if(dnssec) + for(i=0; i<num_rrsets; i++) { + setstart = sldns_buffer_position(pkt); + if((r=packed_rrset_encode(rep->rrsets[rrsets_before+i], + pkt, num_rrs, timenow, region, 0, 1, tree, + s, qtype, dnssec, rr_offset)) + != RETVAL_OK) { + sldns_buffer_set_position(pkt, setstart); + return r; + } + } + } + return RETVAL_OK; +} + +/** store query section in wireformat buffer, return RETVAL */ +static int +insert_query(struct query_info* qinfo, struct compress_tree_node** tree, + sldns_buffer* buffer, struct regional* region) +{ + if(sldns_buffer_remaining(buffer) < + qinfo->qname_len+sizeof(uint16_t)*2) + return RETVAL_TRUNC; /* buffer too small */ + /* the query is the first name inserted into the tree */ + if(!compress_tree_store(qinfo->qname, + dname_count_labels(qinfo->qname), + sldns_buffer_position(buffer), region, NULL, tree)) + return RETVAL_OUTMEM; + if(sldns_buffer_current(buffer) == qinfo->qname) + sldns_buffer_skip(buffer, (ssize_t)qinfo->qname_len); + else sldns_buffer_write(buffer, qinfo->qname, qinfo->qname_len); + sldns_buffer_write_u16(buffer, qinfo->qtype); + sldns_buffer_write_u16(buffer, qinfo->qclass); + return RETVAL_OK; +} + +static int +positive_answer(struct reply_info* rep, uint16_t qtype) { + size_t i; + if (FLAGS_GET_RCODE(rep->flags) != LDNS_RCODE_NOERROR) + return 0; + + for(i=0;i<rep->an_numrrsets; i++) { + if(ntohs(rep->rrsets[i]->rk.type) == qtype) { + /* in case it is a wildcard with DNSSEC, there will + * be NSEC/NSEC3 records in the authority section + * that we cannot remove */ + for(i=rep->an_numrrsets; i<rep->an_numrrsets+ + rep->ns_numrrsets; i++) { + if(ntohs(rep->rrsets[i]->rk.type) == + LDNS_RR_TYPE_NSEC || + ntohs(rep->rrsets[i]->rk.type) == + LDNS_RR_TYPE_NSEC3) + return 0; + } + return 1; + } + } + return 0; +} + +int +reply_info_encode(struct query_info* qinfo, struct reply_info* rep, + uint16_t id, uint16_t flags, sldns_buffer* buffer, time_t timenow, + struct regional* region, uint16_t udpsize, int dnssec) +{ + uint16_t ancount=0, nscount=0, arcount=0; + struct compress_tree_node* tree = 0; + int r; + size_t rr_offset; + + sldns_buffer_clear(buffer); + if(udpsize < sldns_buffer_limit(buffer)) + sldns_buffer_set_limit(buffer, udpsize); + if(sldns_buffer_remaining(buffer) < LDNS_HEADER_SIZE) + return 0; + + sldns_buffer_write(buffer, &id, sizeof(uint16_t)); + sldns_buffer_write_u16(buffer, flags); + sldns_buffer_write_u16(buffer, rep->qdcount); + /* set an, ns, ar counts to zero in case of small packets */ + sldns_buffer_write(buffer, "\000\000\000\000\000\000", 6); + + /* insert query section */ + if(rep->qdcount) { + if((r=insert_query(qinfo, &tree, buffer, region)) != + RETVAL_OK) { + if(r == RETVAL_TRUNC) { + /* create truncated message */ + sldns_buffer_write_u16_at(buffer, 4, 0); + LDNS_TC_SET(sldns_buffer_begin(buffer)); + sldns_buffer_flip(buffer); + return 1; + } + return 0; + } + } + /* roundrobin offset. using query id for random number. With ntohs + * for different roundrobins for sequential id client senders. */ + rr_offset = RRSET_ROUNDROBIN?ntohs(id):0; + + /* insert answer section */ + if((r=insert_section(rep, rep->an_numrrsets, &ancount, buffer, + 0, timenow, region, &tree, LDNS_SECTION_ANSWER, qinfo->qtype, + dnssec, rr_offset)) != RETVAL_OK) { + if(r == RETVAL_TRUNC) { + /* create truncated message */ + sldns_buffer_write_u16_at(buffer, 6, ancount); + LDNS_TC_SET(sldns_buffer_begin(buffer)); + sldns_buffer_flip(buffer); + return 1; + } + return 0; + } + sldns_buffer_write_u16_at(buffer, 6, ancount); + + /* if response is positive answer, auth/add sections are not required */ + if( ! (MINIMAL_RESPONSES && positive_answer(rep, qinfo->qtype)) ) { + /* insert auth section */ + if((r=insert_section(rep, rep->ns_numrrsets, &nscount, buffer, + rep->an_numrrsets, timenow, region, &tree, + LDNS_SECTION_AUTHORITY, qinfo->qtype, + dnssec, rr_offset)) != RETVAL_OK) { + if(r == RETVAL_TRUNC) { + /* create truncated message */ + sldns_buffer_write_u16_at(buffer, 8, nscount); + LDNS_TC_SET(sldns_buffer_begin(buffer)); + sldns_buffer_flip(buffer); + return 1; + } + return 0; + } + sldns_buffer_write_u16_at(buffer, 8, nscount); + + /* insert add section */ + if((r=insert_section(rep, rep->ar_numrrsets, &arcount, buffer, + rep->an_numrrsets + rep->ns_numrrsets, timenow, region, + &tree, LDNS_SECTION_ADDITIONAL, qinfo->qtype, + dnssec, rr_offset)) != RETVAL_OK) { + if(r == RETVAL_TRUNC) { + /* no need to set TC bit, this is the additional */ + sldns_buffer_write_u16_at(buffer, 10, arcount); + sldns_buffer_flip(buffer); + return 1; + } + return 0; + } + sldns_buffer_write_u16_at(buffer, 10, arcount); + } + sldns_buffer_flip(buffer); + return 1; +} + +uint16_t +calc_edns_field_size(struct edns_data* edns) +{ + if(!edns || !edns->edns_present) + return 0; + /* domain root '.' + type + class + ttl + rdatalen(=0) */ + return 1 + 2 + 2 + 4 + 2; +} + +void +attach_edns_record(sldns_buffer* pkt, struct edns_data* edns) +{ + size_t len; + if(!edns || !edns->edns_present) + return; + /* inc additional count */ + sldns_buffer_write_u16_at(pkt, 10, + sldns_buffer_read_u16_at(pkt, 10) + 1); + len = sldns_buffer_limit(pkt); + sldns_buffer_clear(pkt); + sldns_buffer_set_position(pkt, len); + /* write EDNS record */ + sldns_buffer_write_u8(pkt, 0); /* '.' label */ + sldns_buffer_write_u16(pkt, LDNS_RR_TYPE_OPT); /* type */ + sldns_buffer_write_u16(pkt, edns->udp_size); /* class */ + sldns_buffer_write_u8(pkt, edns->ext_rcode); /* ttl */ + sldns_buffer_write_u8(pkt, edns->edns_version); + sldns_buffer_write_u16(pkt, edns->bits); + sldns_buffer_write_u16(pkt, 0); /* rdatalen */ + sldns_buffer_flip(pkt); +} + +int +reply_info_answer_encode(struct query_info* qinf, struct reply_info* rep, + uint16_t id, uint16_t qflags, sldns_buffer* pkt, time_t timenow, + int cached, struct regional* region, uint16_t udpsize, + struct edns_data* edns, int dnssec, int secure) +{ + uint16_t flags; + int attach_edns = 1; + + if(!cached || rep->authoritative) { + /* original flags, copy RD and CD bits from query. */ + flags = rep->flags | (qflags & (BIT_RD|BIT_CD)); + } else { + /* remove AA bit, copy RD and CD bits from query. */ + flags = (rep->flags & ~BIT_AA) | (qflags & (BIT_RD|BIT_CD)); + } + if(secure && (dnssec || (qflags&BIT_AD))) + flags |= BIT_AD; + log_assert(flags & BIT_QR); /* QR bit must be on in our replies */ + if(udpsize < LDNS_HEADER_SIZE) + return 0; + if(udpsize < LDNS_HEADER_SIZE + calc_edns_field_size(edns)) { + /* packet too small to contain edns, omit it. */ + attach_edns = 0; + } else { + /* reserve space for edns record */ + udpsize -= calc_edns_field_size(edns); + } + + if(!reply_info_encode(qinf, rep, id, flags, pkt, timenow, region, + udpsize, dnssec)) { + log_err("reply encode: out of memory"); + return 0; + } + if(attach_edns) + attach_edns_record(pkt, edns); + return 1; +} + +void +qinfo_query_encode(sldns_buffer* pkt, struct query_info* qinfo) +{ + uint16_t flags = 0; /* QUERY, NOERROR */ + sldns_buffer_clear(pkt); + log_assert(sldns_buffer_remaining(pkt) >= 12+255+4/*max query*/); + sldns_buffer_skip(pkt, 2); /* id done later */ + sldns_buffer_write_u16(pkt, flags); + sldns_buffer_write_u16(pkt, 1); /* query count */ + sldns_buffer_write(pkt, "\000\000\000\000\000\000", 6); /* counts */ + sldns_buffer_write(pkt, qinfo->qname, qinfo->qname_len); + sldns_buffer_write_u16(pkt, qinfo->qtype); + sldns_buffer_write_u16(pkt, qinfo->qclass); + sldns_buffer_flip(pkt); +} + +void +error_encode(sldns_buffer* buf, int r, struct query_info* qinfo, + uint16_t qid, uint16_t qflags, struct edns_data* edns) +{ + uint16_t flags; + + sldns_buffer_clear(buf); + sldns_buffer_write(buf, &qid, sizeof(uint16_t)); + flags = (uint16_t)(BIT_QR | BIT_RA | r); /* QR and retcode*/ + flags |= (qflags & (BIT_RD|BIT_CD)); /* copy RD and CD bit */ + sldns_buffer_write_u16(buf, flags); + if(qinfo) flags = 1; + else flags = 0; + sldns_buffer_write_u16(buf, flags); + flags = 0; + sldns_buffer_write(buf, &flags, sizeof(uint16_t)); + sldns_buffer_write(buf, &flags, sizeof(uint16_t)); + sldns_buffer_write(buf, &flags, sizeof(uint16_t)); + if(qinfo) { + if(sldns_buffer_current(buf) == qinfo->qname) + sldns_buffer_skip(buf, (ssize_t)qinfo->qname_len); + else sldns_buffer_write(buf, qinfo->qname, qinfo->qname_len); + sldns_buffer_write_u16(buf, qinfo->qtype); + sldns_buffer_write_u16(buf, qinfo->qclass); + } + sldns_buffer_flip(buf); + if(edns) { + struct edns_data es = *edns; + es.edns_version = EDNS_ADVERTISED_VERSION; + es.udp_size = EDNS_ADVERTISED_SIZE; + es.ext_rcode = 0; + es.bits &= EDNS_DO; + if(sldns_buffer_limit(buf) + calc_edns_field_size(&es) > + edns->udp_size) + return; + attach_edns_record(buf, &es); + } +} diff --git a/external/unbound/util/data/msgencode.h b/external/unbound/util/data/msgencode.h new file mode 100644 index 000000000..eea129d98 --- /dev/null +++ b/external/unbound/util/data/msgencode.h @@ -0,0 +1,131 @@ +/* + * util/data/msgencode.h - encode compressed DNS messages. + * + * Copyright (c) 2007, NLnet Labs. All rights reserved. + * + * This software is open source. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * Neither the name of the NLNET LABS nor the names of its contributors may + * be used to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/** + * \file + * + * This file contains temporary data structures and routines to create + * compressed DNS messages. + */ + +#ifndef UTIL_DATA_MSGENCODE_H +#define UTIL_DATA_MSGENCODE_H +struct sldns_buffer; +struct query_info; +struct reply_info; +struct regional; +struct edns_data; + +/** + * Generate answer from reply_info. + * @param qinf: query information that provides query section in packet. + * @param rep: reply to fill in. + * @param id: id word from the query. + * @param qflags: flags word from the query. + * @param dest: buffer to put message into; will truncate if it does not fit. + * @param timenow: time to subtract. + * @param cached: set true if a cached reply (so no AA bit). + * set false for the first reply. + * @param region: where to allocate temp variables (for compression). + * @param udpsize: size of the answer, 512, from EDNS, or 64k for TCP. + * @param edns: EDNS data included in the answer, NULL for none. + * or if edns_present = 0, it is not included. + * @param dnssec: if 0 DNSSEC records are omitted from the answer. + * @param secure: if 1, the AD bit is set in the reply. + * @return: 0 on error (server failure). + */ +int reply_info_answer_encode(struct query_info* qinf, struct reply_info* rep, + uint16_t id, uint16_t qflags, struct sldns_buffer* dest, time_t timenow, + int cached, struct regional* region, uint16_t udpsize, + struct edns_data* edns, int dnssec, int secure); + +/** + * Regenerate the wireformat from the stored msg reply. + * If the buffer is too small then the message is truncated at a whole + * rrset and the TC bit set, or whole rrsets are left out of the additional + * and the TC bit is not set. + * @param qinfo: query info to store. + * @param rep: reply to store. + * @param id: id value to store, network order. + * @param flags: flags value to store, host order. + * @param buffer: buffer to store the packet into. + * @param timenow: time now, to adjust ttl values. + * @param region: to store temporary data in. + * @param udpsize: size of the answer, 512, from EDNS, or 64k for TCP. + * @param dnssec: if 0 DNSSEC records are omitted from the answer. + * @return: nonzero is success, or + * 0 on error: malloc failure (no log_err has been done). + */ +int reply_info_encode(struct query_info* qinfo, struct reply_info* rep, + uint16_t id, uint16_t flags, struct sldns_buffer* buffer, time_t timenow, + struct regional* region, uint16_t udpsize, int dnssec); + +/** + * Encode query packet. Assumes the buffer is large enough. + * @param pkt: where to store the packet. + * @param qinfo: query info. + */ +void qinfo_query_encode(struct sldns_buffer* pkt, struct query_info* qinfo); + +/** + * Estimate size of EDNS record in packet. EDNS record will be no larger. + * @param edns: edns data or NULL. + * @return octets to reserve for EDNS. + */ +uint16_t calc_edns_field_size(struct edns_data* edns); + +/** + * Attach EDNS record to buffer. Buffer has complete packet. There must + * be enough room left for the EDNS record. + * @param pkt: packet added to. + * @param edns: if NULL or present=0, nothing is added to the packet. + */ +void attach_edns_record(struct sldns_buffer* pkt, struct edns_data* edns); + +/** + * Encode an error. With QR and RA set. + * + * @param pkt: where to store the packet. + * @param r: RCODE value to encode. + * @param qinfo: if not NULL, the query is included. + * @param qid: query ID to set in packet. network order. + * @param qflags: original query flags (to copy RD and CD bits). host order. + * @param edns: if not NULL, this is the query edns info, + * and an edns reply is attached. Only attached if EDNS record fits reply. + */ +void error_encode(struct sldns_buffer* pkt, int r, struct query_info* qinfo, + uint16_t qid, uint16_t qflags, struct edns_data* edns); + +#endif /* UTIL_DATA_MSGENCODE_H */ diff --git a/external/unbound/util/data/msgparse.c b/external/unbound/util/data/msgparse.c new file mode 100644 index 000000000..abe778a89 --- /dev/null +++ b/external/unbound/util/data/msgparse.c @@ -0,0 +1,1022 @@ +/* + * util/data/msgparse.c - parse wireformat DNS messages. + * + * Copyright (c) 2007, NLnet Labs. All rights reserved. + * + * This software is open source. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * Neither the name of the NLNET LABS nor the names of its contributors may + * be used to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ +/** + * \file + * Routines for message parsing a packet buffer to a descriptive structure. + */ +#include "config.h" +#include "util/data/msgparse.h" +#include "util/data/dname.h" +#include "util/data/packed_rrset.h" +#include "util/storage/lookup3.h" +#include "util/regional.h" +#include "ldns/rrdef.h" +#include "ldns/sbuffer.h" +#include "ldns/parseutil.h" +#include "ldns/wire2str.h" + +/** smart comparison of (compressed, valid) dnames from packet */ +static int +smart_compare(sldns_buffer* pkt, uint8_t* dnow, + uint8_t* dprfirst, uint8_t* dprlast) +{ + if(LABEL_IS_PTR(*dnow)) { + /* ptr points to a previous dname */ + uint8_t* p = sldns_buffer_at(pkt, PTR_OFFSET(dnow[0], dnow[1])); + if( p == dprfirst || p == dprlast ) + return 0; + /* prev dname is also a ptr, both ptrs are the same. */ + if(LABEL_IS_PTR(*dprlast) && + dprlast[0] == dnow[0] && dprlast[1] == dnow[1]) + return 0; + } + return dname_pkt_compare(pkt, dnow, dprlast); +} + +/** + * Allocate new rrset in region, fill with data. + */ +static struct rrset_parse* +new_rrset(struct msg_parse* msg, uint8_t* dname, size_t dnamelen, + uint16_t type, uint16_t dclass, hashvalue_t hash, + uint32_t rrset_flags, sldns_pkt_section section, + struct regional* region) +{ + struct rrset_parse* p = regional_alloc(region, sizeof(*p)); + if(!p) return NULL; + p->rrset_bucket_next = msg->hashtable[hash & (PARSE_TABLE_SIZE-1)]; + msg->hashtable[hash & (PARSE_TABLE_SIZE-1)] = p; + p->rrset_all_next = 0; + if(msg->rrset_last) + msg->rrset_last->rrset_all_next = p; + else msg->rrset_first = p; + msg->rrset_last = p; + p->hash = hash; + p->section = section; + p->dname = dname; + p->dname_len = dnamelen; + p->type = type; + p->rrset_class = dclass; + p->flags = rrset_flags; + p->rr_count = 0; + p->size = 0; + p->rr_first = 0; + p->rr_last = 0; + p->rrsig_count = 0; + p->rrsig_first = 0; + p->rrsig_last = 0; + return p; +} + +/** See if next rrset is nsec at zone apex */ +static int +nsec_at_apex(sldns_buffer* pkt) +{ + /* we are at ttl position in packet. */ + size_t pos = sldns_buffer_position(pkt); + uint16_t rdatalen; + if(sldns_buffer_remaining(pkt) < 7) /* ttl+len+root */ + return 0; /* eek! */ + sldns_buffer_skip(pkt, 4); /* ttl */; + rdatalen = sldns_buffer_read_u16(pkt); + if(sldns_buffer_remaining(pkt) < rdatalen) { + sldns_buffer_set_position(pkt, pos); + return 0; /* parse error happens later */ + } + /* must validate the nsec next domain name format */ + if(pkt_dname_len(pkt) == 0) { + sldns_buffer_set_position(pkt, pos); + return 0; /* parse error */ + } + + /* see if SOA bit is set. */ + if(sldns_buffer_position(pkt) < pos+4+rdatalen) { + /* nsec type bitmap contains items */ + uint8_t win, blen, bits; + /* need: windownum, bitmap len, firstbyte */ + if(sldns_buffer_position(pkt)+3 > pos+4+rdatalen) { + sldns_buffer_set_position(pkt, pos); + return 0; /* malformed nsec */ + } + win = sldns_buffer_read_u8(pkt); + blen = sldns_buffer_read_u8(pkt); + bits = sldns_buffer_read_u8(pkt); + /* 0window always first window. bitlen >=1 or parse + error really. bit 0x2 is SOA. */ + if(win == 0 && blen >= 1 && (bits & 0x02)) { + sldns_buffer_set_position(pkt, pos); + return 1; + } + } + + sldns_buffer_set_position(pkt, pos); + return 0; +} + +/** Calculate rrset flags */ +static uint32_t +pkt_rrset_flags(sldns_buffer* pkt, uint16_t type, sldns_pkt_section sec) +{ + uint32_t f = 0; + if(type == LDNS_RR_TYPE_NSEC && nsec_at_apex(pkt)) { + f |= PACKED_RRSET_NSEC_AT_APEX; + } else if(type == LDNS_RR_TYPE_SOA && sec == LDNS_SECTION_AUTHORITY) { + f |= PACKED_RRSET_SOA_NEG; + } + return f; +} + +hashvalue_t +pkt_hash_rrset(sldns_buffer* pkt, uint8_t* dname, uint16_t type, + uint16_t dclass, uint32_t rrset_flags) +{ + /* note this MUST be identical to rrset_key_hash in packed_rrset.c */ + /* this routine handles compressed names */ + hashvalue_t h = 0xab; + h = dname_pkt_hash(pkt, dname, h); + h = hashlittle(&type, sizeof(type), h); /* host order */ + h = hashlittle(&dclass, sizeof(dclass), h); /* netw order */ + h = hashlittle(&rrset_flags, sizeof(uint32_t), h); + return h; +} + +/** create partial dname hash for rrset hash */ +static hashvalue_t +pkt_hash_rrset_first(sldns_buffer* pkt, uint8_t* dname) +{ + /* works together with pkt_hash_rrset_rest */ + /* note this MUST be identical to rrset_key_hash in packed_rrset.c */ + /* this routine handles compressed names */ + hashvalue_t h = 0xab; + h = dname_pkt_hash(pkt, dname, h); + return h; +} + +/** create a rrset hash from a partial dname hash */ +static hashvalue_t +pkt_hash_rrset_rest(hashvalue_t dname_h, uint16_t type, uint16_t dclass, + uint32_t rrset_flags) +{ + /* works together with pkt_hash_rrset_first */ + /* note this MUST be identical to rrset_key_hash in packed_rrset.c */ + hashvalue_t h; + h = hashlittle(&type, sizeof(type), dname_h); /* host order */ + h = hashlittle(&dclass, sizeof(dclass), h); /* netw order */ + h = hashlittle(&rrset_flags, sizeof(uint32_t), h); + return h; +} + +/** compare rrset_parse with data */ +static int +rrset_parse_equals(struct rrset_parse* p, sldns_buffer* pkt, hashvalue_t h, + uint32_t rrset_flags, uint8_t* dname, size_t dnamelen, + uint16_t type, uint16_t dclass) +{ + if(p->hash == h && p->dname_len == dnamelen && p->type == type && + p->rrset_class == dclass && p->flags == rrset_flags && + dname_pkt_compare(pkt, dname, p->dname) == 0) + return 1; + return 0; +} + + +struct rrset_parse* +msgparse_hashtable_lookup(struct msg_parse* msg, sldns_buffer* pkt, + hashvalue_t h, uint32_t rrset_flags, uint8_t* dname, size_t dnamelen, + uint16_t type, uint16_t dclass) +{ + struct rrset_parse* p = msg->hashtable[h & (PARSE_TABLE_SIZE-1)]; + while(p) { + if(rrset_parse_equals(p, pkt, h, rrset_flags, dname, dnamelen, + type, dclass)) + return p; + p = p->rrset_bucket_next; + } + return NULL; +} + +/** return type networkformat that rrsig in packet covers */ +static int +pkt_rrsig_covered(sldns_buffer* pkt, uint8_t* here, uint16_t* type) +{ + size_t pos = sldns_buffer_position(pkt); + sldns_buffer_set_position(pkt, (size_t)(here-sldns_buffer_begin(pkt))); + /* ttl + len + size of small rrsig(rootlabel, no signature) */ + if(sldns_buffer_remaining(pkt) < 4+2+19) + return 0; + sldns_buffer_skip(pkt, 4); /* ttl */ + if(sldns_buffer_read_u16(pkt) < 19) /* too short */ { + sldns_buffer_set_position(pkt, pos); + return 0; + } + *type = sldns_buffer_read_u16(pkt); + sldns_buffer_set_position(pkt, pos); + return 1; +} + +/** true if covered type equals prevtype */ +static int +pkt_rrsig_covered_equals(sldns_buffer* pkt, uint8_t* here, uint16_t type) +{ + uint16_t t; + if(pkt_rrsig_covered(pkt, here, &t) && t == type) + return 1; + return 0; +} + +void +msgparse_bucket_remove(struct msg_parse* msg, struct rrset_parse* rrset) +{ + struct rrset_parse** p; + p = &msg->hashtable[ rrset->hash & (PARSE_TABLE_SIZE-1) ]; + while(*p) { + if(*p == rrset) { + *p = rrset->rrset_bucket_next; + return; + } + p = &( (*p)->rrset_bucket_next ); + } +} + +/** change section of rrset from previous to current section */ +static void +change_section(struct msg_parse* msg, struct rrset_parse* rrset, + sldns_pkt_section section) +{ + struct rrset_parse *p, *prev; + /* remove from list */ + if(section == rrset->section) + return; + p = msg->rrset_first; + prev = 0; + while(p) { + if(p == rrset) { + if(prev) prev->rrset_all_next = p->rrset_all_next; + else msg->rrset_first = p->rrset_all_next; + if(msg->rrset_last == rrset) + msg->rrset_last = prev; + break; + } + prev = p; + p = p->rrset_all_next; + } + /* remove from count */ + switch(rrset->section) { + case LDNS_SECTION_ANSWER: msg->an_rrsets--; break; + case LDNS_SECTION_AUTHORITY: msg->ns_rrsets--; break; + case LDNS_SECTION_ADDITIONAL: msg->ar_rrsets--; break; + default: log_assert(0); + } + /* insert at end of list */ + rrset->rrset_all_next = 0; + if(msg->rrset_last) + msg->rrset_last->rrset_all_next = rrset; + else msg->rrset_first = rrset; + msg->rrset_last = rrset; + /* up count of new section */ + switch(section) { + case LDNS_SECTION_AUTHORITY: msg->ns_rrsets++; break; + case LDNS_SECTION_ADDITIONAL: msg->ar_rrsets++; break; + default: log_assert(0); + } + rrset->section = section; +} + +/** see if rrset of type RRSIG contains sig over given type */ +static int +rrset_has_sigover(sldns_buffer* pkt, struct rrset_parse* rrset, uint16_t type, + int* hasother) +{ + int res = 0; + struct rr_parse* rr = rrset->rr_first; + log_assert( rrset->type == LDNS_RR_TYPE_RRSIG ); + while(rr) { + if(pkt_rrsig_covered_equals(pkt, rr->ttl_data, type)) + res = 1; + else *hasother = 1; + rr = rr->next; + } + return res; +} + +/** move rrsigs from sigset to dataset */ +static int +moveover_rrsigs(sldns_buffer* pkt, struct regional* region, + struct rrset_parse* sigset, struct rrset_parse* dataset, int duplicate) +{ + struct rr_parse* sig = sigset->rr_first; + struct rr_parse* prev = NULL; + struct rr_parse* insert; + struct rr_parse* nextsig; + while(sig) { + nextsig = sig->next; + if(pkt_rrsig_covered_equals(pkt, sig->ttl_data, + dataset->type)) { + if(duplicate) { + /* new */ + insert = (struct rr_parse*)regional_alloc( + region, sizeof(struct rr_parse)); + if(!insert) return 0; + insert->outside_packet = 0; + insert->ttl_data = sig->ttl_data; + insert->size = sig->size; + /* prev not used */ + } else { + /* remove from sigset */ + if(prev) prev->next = sig->next; + else sigset->rr_first = sig->next; + if(sigset->rr_last == sig) + sigset->rr_last = prev; + sigset->rr_count--; + sigset->size -= sig->size; + insert = sig; + /* prev not changed */ + } + /* add to dataset */ + dataset->rrsig_count++; + insert->next = 0; + if(dataset->rrsig_last) + dataset->rrsig_last->next = insert; + else dataset->rrsig_first = insert; + dataset->rrsig_last = insert; + dataset->size += insert->size; + } else { + prev = sig; + } + sig = nextsig; + } + return 1; +} + +/** change an rrsig rrset for use as data rrset */ +static struct rrset_parse* +change_rrsig_rrset(struct rrset_parse* sigset, struct msg_parse* msg, + sldns_buffer* pkt, uint16_t datatype, uint32_t rrset_flags, + int hasother, sldns_pkt_section section, struct regional* region) +{ + struct rrset_parse* dataset = sigset; + hashvalue_t hash = pkt_hash_rrset(pkt, sigset->dname, datatype, + sigset->rrset_class, rrset_flags); + log_assert( sigset->type == LDNS_RR_TYPE_RRSIG ); + log_assert( datatype != LDNS_RR_TYPE_RRSIG ); + if(hasother) { + /* need to make new rrset to hold data type */ + dataset = new_rrset(msg, sigset->dname, sigset->dname_len, + datatype, sigset->rrset_class, hash, rrset_flags, + section, region); + if(!dataset) + return NULL; + switch(section) { + case LDNS_SECTION_ANSWER: msg->an_rrsets++; break; + case LDNS_SECTION_AUTHORITY: msg->ns_rrsets++; break; + case LDNS_SECTION_ADDITIONAL: msg->ar_rrsets++; break; + default: log_assert(0); + } + if(!moveover_rrsigs(pkt, region, sigset, dataset, + msg->qtype == LDNS_RR_TYPE_RRSIG || + (msg->qtype == LDNS_RR_TYPE_ANY && + section != LDNS_SECTION_ANSWER) )) + return NULL; + return dataset; + } + /* changeover the type of the rrset to data set */ + msgparse_bucket_remove(msg, dataset); + /* insert into new hash bucket */ + dataset->rrset_bucket_next = msg->hashtable[hash&(PARSE_TABLE_SIZE-1)]; + msg->hashtable[hash&(PARSE_TABLE_SIZE-1)] = dataset; + dataset->hash = hash; + /* use section of data item for result */ + change_section(msg, dataset, section); + dataset->type = datatype; + dataset->flags = rrset_flags; + dataset->rrsig_count += dataset->rr_count; + dataset->rr_count = 0; + /* move sigs to end of siglist */ + if(dataset->rrsig_last) + dataset->rrsig_last->next = dataset->rr_first; + else dataset->rrsig_first = dataset->rr_first; + dataset->rrsig_last = dataset->rr_last; + dataset->rr_first = 0; + dataset->rr_last = 0; + return dataset; +} + +/** Find rrset. If equal to previous it is fast. hash if not so. + * @param msg: the message with hash table. + * @param pkt: the packet in wireformat (needed for compression ptrs). + * @param dname: pointer to start of dname (compressed) in packet. + * @param dnamelen: uncompressed wirefmt length of dname. + * @param type: type of current rr. + * @param dclass: class of current rr. + * @param hash: hash value is returned if the rrset could not be found. + * @param rrset_flags: is returned if the rrset could not be found. + * @param prev_dname_first: dname of last seen RR. First seen dname. + * @param prev_dname_last: dname of last seen RR. Last seen dname. + * @param prev_dnamelen: dname len of last seen RR. + * @param prev_type: type of last seen RR. + * @param prev_dclass: class of last seen RR. + * @param rrset_prev: last seen RRset. + * @param section: the current section in the packet. + * @param region: used to allocate temporary parsing data. + * @return 0 on out of memory. + */ +static int +find_rrset(struct msg_parse* msg, sldns_buffer* pkt, uint8_t* dname, + size_t dnamelen, uint16_t type, uint16_t dclass, hashvalue_t* hash, + uint32_t* rrset_flags, + uint8_t** prev_dname_first, uint8_t** prev_dname_last, + size_t* prev_dnamelen, uint16_t* prev_type, + uint16_t* prev_dclass, struct rrset_parse** rrset_prev, + sldns_pkt_section section, struct regional* region) +{ + hashvalue_t dname_h = pkt_hash_rrset_first(pkt, dname); + uint16_t covtype; + if(*rrset_prev) { + /* check if equal to previous item */ + if(type == *prev_type && dclass == *prev_dclass && + dnamelen == *prev_dnamelen && + smart_compare(pkt, dname, *prev_dname_first, + *prev_dname_last) == 0 && + type != LDNS_RR_TYPE_RRSIG) { + /* same as previous */ + *prev_dname_last = dname; + return 1; + } + /* check if rrsig over previous item */ + if(type == LDNS_RR_TYPE_RRSIG && dclass == *prev_dclass && + pkt_rrsig_covered_equals(pkt, sldns_buffer_current(pkt), + *prev_type) && + smart_compare(pkt, dname, *prev_dname_first, + *prev_dname_last) == 0) { + /* covers previous */ + *prev_dname_last = dname; + return 1; + } + } + /* find by hashing and lookup in hashtable */ + *rrset_flags = pkt_rrset_flags(pkt, type, section); + + /* if rrsig - try to lookup matching data set first */ + if(type == LDNS_RR_TYPE_RRSIG && pkt_rrsig_covered(pkt, + sldns_buffer_current(pkt), &covtype)) { + *hash = pkt_hash_rrset_rest(dname_h, covtype, dclass, + *rrset_flags); + *rrset_prev = msgparse_hashtable_lookup(msg, pkt, *hash, + *rrset_flags, dname, dnamelen, covtype, dclass); + if(!*rrset_prev && covtype == LDNS_RR_TYPE_NSEC) { + /* if NSEC try with NSEC apex bit twiddled */ + *rrset_flags ^= PACKED_RRSET_NSEC_AT_APEX; + *hash = pkt_hash_rrset_rest(dname_h, covtype, dclass, + *rrset_flags); + *rrset_prev = msgparse_hashtable_lookup(msg, pkt, + *hash, *rrset_flags, dname, dnamelen, covtype, + dclass); + if(!*rrset_prev) /* untwiddle if not found */ + *rrset_flags ^= PACKED_RRSET_NSEC_AT_APEX; + } + if(!*rrset_prev && covtype == LDNS_RR_TYPE_SOA) { + /* if SOA try with SOA neg flag twiddled */ + *rrset_flags ^= PACKED_RRSET_SOA_NEG; + *hash = pkt_hash_rrset_rest(dname_h, covtype, dclass, + *rrset_flags); + *rrset_prev = msgparse_hashtable_lookup(msg, pkt, + *hash, *rrset_flags, dname, dnamelen, covtype, + dclass); + if(!*rrset_prev) /* untwiddle if not found */ + *rrset_flags ^= PACKED_RRSET_SOA_NEG; + } + if(*rrset_prev) { + *prev_dname_first = (*rrset_prev)->dname; + *prev_dname_last = dname; + *prev_dnamelen = dnamelen; + *prev_type = covtype; + *prev_dclass = dclass; + return 1; + } + } + if(type != LDNS_RR_TYPE_RRSIG) { + int hasother = 0; + /* find matching rrsig */ + *hash = pkt_hash_rrset_rest(dname_h, LDNS_RR_TYPE_RRSIG, + dclass, 0); + *rrset_prev = msgparse_hashtable_lookup(msg, pkt, *hash, + 0, dname, dnamelen, LDNS_RR_TYPE_RRSIG, + dclass); + if(*rrset_prev && rrset_has_sigover(pkt, *rrset_prev, type, + &hasother)) { + /* yes! */ + *prev_dname_first = (*rrset_prev)->dname; + *prev_dname_last = dname; + *prev_dnamelen = dnamelen; + *prev_type = type; + *prev_dclass = dclass; + *rrset_prev = change_rrsig_rrset(*rrset_prev, msg, + pkt, type, *rrset_flags, hasother, section, + region); + if(!*rrset_prev) return 0; + return 1; + } + } + + *hash = pkt_hash_rrset_rest(dname_h, type, dclass, *rrset_flags); + *rrset_prev = msgparse_hashtable_lookup(msg, pkt, *hash, *rrset_flags, + dname, dnamelen, type, dclass); + if(*rrset_prev) + *prev_dname_first = (*rrset_prev)->dname; + else *prev_dname_first = dname; + *prev_dname_last = dname; + *prev_dnamelen = dnamelen; + *prev_type = type; + *prev_dclass = dclass; + return 1; +} + +/** + * Parse query section. + * @param pkt: packet, position at call must be at start of query section. + * at end position is after query section. + * @param msg: store results here. + * @return: 0 if OK, or rcode on error. + */ +static int +parse_query_section(sldns_buffer* pkt, struct msg_parse* msg) +{ + if(msg->qdcount == 0) + return 0; + if(msg->qdcount > 1) + return LDNS_RCODE_FORMERR; + log_assert(msg->qdcount == 1); + if(sldns_buffer_remaining(pkt) <= 0) + return LDNS_RCODE_FORMERR; + msg->qname = sldns_buffer_current(pkt); + if((msg->qname_len = pkt_dname_len(pkt)) == 0) + return LDNS_RCODE_FORMERR; + if(sldns_buffer_remaining(pkt) < sizeof(uint16_t)*2) + return LDNS_RCODE_FORMERR; + msg->qtype = sldns_buffer_read_u16(pkt); + msg->qclass = sldns_buffer_read_u16(pkt); + return 0; +} + +size_t +get_rdf_size(sldns_rdf_type rdf) +{ + switch(rdf) { + case LDNS_RDF_TYPE_CLASS: + case LDNS_RDF_TYPE_ALG: + case LDNS_RDF_TYPE_INT8: + return 1; + break; + case LDNS_RDF_TYPE_INT16: + case LDNS_RDF_TYPE_TYPE: + case LDNS_RDF_TYPE_CERT_ALG: + return 2; + break; + case LDNS_RDF_TYPE_INT32: + case LDNS_RDF_TYPE_TIME: + case LDNS_RDF_TYPE_A: + case LDNS_RDF_TYPE_PERIOD: + return 4; + break; + case LDNS_RDF_TYPE_TSIGTIME: + return 6; + break; + case LDNS_RDF_TYPE_AAAA: + return 16; + break; + default: + log_assert(0); /* add type above */ + /* only types that appear before a domain * + * name are needed. rest is simply copied. */ + } + return 0; +} + +/** calculate the size of one rr */ +static int +calc_size(sldns_buffer* pkt, uint16_t type, struct rr_parse* rr) +{ + const sldns_rr_descriptor* desc; + uint16_t pkt_len; /* length of rr inside the packet */ + rr->size = sizeof(uint16_t); /* the rdatalen */ + sldns_buffer_skip(pkt, 4); /* skip ttl */ + pkt_len = sldns_buffer_read_u16(pkt); + if(sldns_buffer_remaining(pkt) < pkt_len) + return 0; + desc = sldns_rr_descript(type); + if(pkt_len > 0 && desc && desc->_dname_count > 0) { + int count = (int)desc->_dname_count; + int rdf = 0; + size_t len; + size_t oldpos; + /* skip first part. */ + while(pkt_len > 0 && count) { + switch(desc->_wireformat[rdf]) { + case LDNS_RDF_TYPE_DNAME: + /* decompress every domain name */ + oldpos = sldns_buffer_position(pkt); + if((len = pkt_dname_len(pkt)) == 0) + return 0; /* malformed dname */ + if(sldns_buffer_position(pkt)-oldpos > pkt_len) + return 0; /* dname exceeds rdata */ + pkt_len -= sldns_buffer_position(pkt)-oldpos; + rr->size += len; + count--; + len = 0; + break; + case LDNS_RDF_TYPE_STR: + if(pkt_len < 1) { + /* NOTREACHED, due to 'while(>0)' */ + return 0; /* len byte exceeds rdata */ + } + len = sldns_buffer_current(pkt)[0] + 1; + break; + default: + len = get_rdf_size(desc->_wireformat[rdf]); + } + if(len) { + if(pkt_len < len) + return 0; /* exceeds rdata */ + pkt_len -= len; + sldns_buffer_skip(pkt, (ssize_t)len); + rr->size += len; + } + rdf++; + } + } + /* remaining rdata */ + rr->size += pkt_len; + sldns_buffer_skip(pkt, (ssize_t)pkt_len); + return 1; +} + +/** skip rr ttl and rdata */ +static int +skip_ttl_rdata(sldns_buffer* pkt) +{ + uint16_t rdatalen; + if(sldns_buffer_remaining(pkt) < 6) /* ttl + rdatalen */ + return 0; + sldns_buffer_skip(pkt, 4); /* ttl */ + rdatalen = sldns_buffer_read_u16(pkt); + if(sldns_buffer_remaining(pkt) < rdatalen) + return 0; + sldns_buffer_skip(pkt, (ssize_t)rdatalen); + return 1; +} + +/** see if RRSIG is a duplicate of another */ +static int +sig_is_double(sldns_buffer* pkt, struct rrset_parse* rrset, uint8_t* ttldata) +{ + uint16_t rlen, siglen; + size_t pos = sldns_buffer_position(pkt); + struct rr_parse* sig; + if(sldns_buffer_remaining(pkt) < 6) + return 0; + sldns_buffer_skip(pkt, 4); /* ttl */ + rlen = sldns_buffer_read_u16(pkt); + if(sldns_buffer_remaining(pkt) < rlen) { + sldns_buffer_set_position(pkt, pos); + return 0; + } + sldns_buffer_set_position(pkt, pos); + + sig = rrset->rrsig_first; + while(sig) { + /* check if rdatalen is same */ + memmove(&siglen, sig->ttl_data+4, sizeof(siglen)); + siglen = ntohs(siglen); + /* checks if data in packet is exactly the same, this means + * also dname in rdata is the same, but rrsig is not allowed + * to have compressed dnames anyway. If it is compressed anyway + * it will lead to duplicate rrs for qtype=RRSIG. (or ANY). + * + * Cannot use sig->size because size of the other one is not + * calculated yet. + */ + if(siglen == rlen) { + if(siglen>0 && memcmp(sig->ttl_data+6, ttldata+6, + siglen) == 0) { + /* same! */ + return 1; + } + } + sig = sig->next; + } + return 0; +} + +/** Add rr (from packet here) to rrset, skips rr */ +static int +add_rr_to_rrset(struct rrset_parse* rrset, sldns_buffer* pkt, + struct msg_parse* msg, struct regional* region, + sldns_pkt_section section, uint16_t type) +{ + struct rr_parse* rr; + /* check section of rrset. */ + if(rrset->section != section && type != LDNS_RR_TYPE_RRSIG && + rrset->type != LDNS_RR_TYPE_RRSIG) { + /* silently drop it - we drop the last part, since + * trust in rr data depends on the section it is in. + * the less trustworthy part is discarded. + * also the last part is more likely to be incomplete. + * RFC 2181: must put RRset only once in response. */ + /* + verbose(VERB_QUERY, "Packet contains rrset data in " + "multiple sections, dropped last part."); + log_buf(VERB_QUERY, "packet was", pkt); + */ + /* forwards */ + if(!skip_ttl_rdata(pkt)) + return LDNS_RCODE_FORMERR; + return 0; + } + + if( (msg->qtype == LDNS_RR_TYPE_RRSIG || + msg->qtype == LDNS_RR_TYPE_ANY) + && sig_is_double(pkt, rrset, sldns_buffer_current(pkt))) { + if(!skip_ttl_rdata(pkt)) + return LDNS_RCODE_FORMERR; + return 0; + } + + /* create rr */ + if(!(rr = (struct rr_parse*)regional_alloc(region, sizeof(*rr)))) + return LDNS_RCODE_SERVFAIL; + rr->outside_packet = 0; + rr->ttl_data = sldns_buffer_current(pkt); + rr->next = 0; + if(type == LDNS_RR_TYPE_RRSIG && rrset->type != LDNS_RR_TYPE_RRSIG) { + if(rrset->rrsig_last) + rrset->rrsig_last->next = rr; + else rrset->rrsig_first = rr; + rrset->rrsig_last = rr; + rrset->rrsig_count++; + } else { + if(rrset->rr_last) + rrset->rr_last->next = rr; + else rrset->rr_first = rr; + rrset->rr_last = rr; + rrset->rr_count++; + } + + /* calc decompressed size */ + if(!calc_size(pkt, type, rr)) + return LDNS_RCODE_FORMERR; + rrset->size += rr->size; + + return 0; +} + +/** + * Parse packet RR section, for answer, authority and additional sections. + * @param pkt: packet, position at call must be at start of section. + * at end position is after section. + * @param msg: store results here. + * @param region: how to alloc results. + * @param section: section enum. + * @param num_rrs: how many rrs are in the section. + * @param num_rrsets: returns number of rrsets in the section. + * @return: 0 if OK, or rcode on error. + */ +static int +parse_section(sldns_buffer* pkt, struct msg_parse* msg, + struct regional* region, sldns_pkt_section section, + uint16_t num_rrs, size_t* num_rrsets) +{ + uint16_t i; + uint8_t* dname, *prev_dname_f = NULL, *prev_dname_l = NULL; + size_t dnamelen, prev_dnamelen = 0; + uint16_t type, prev_type = 0; + uint16_t dclass, prev_dclass = 0; + uint32_t rrset_flags = 0; + hashvalue_t hash = 0; + struct rrset_parse* rrset = NULL; + int r; + + if(num_rrs == 0) + return 0; + if(sldns_buffer_remaining(pkt) <= 0) + return LDNS_RCODE_FORMERR; + for(i=0; i<num_rrs; i++) { + /* parse this RR. */ + dname = sldns_buffer_current(pkt); + if((dnamelen = pkt_dname_len(pkt)) == 0) + return LDNS_RCODE_FORMERR; + if(sldns_buffer_remaining(pkt) < 10) /* type, class, ttl, len */ + return LDNS_RCODE_FORMERR; + type = sldns_buffer_read_u16(pkt); + sldns_buffer_read(pkt, &dclass, sizeof(dclass)); + + if(0) { /* debug show what is being parsed. */ + if(type == LDNS_RR_TYPE_RRSIG) { + uint16_t t; + if(pkt_rrsig_covered(pkt, + sldns_buffer_current(pkt), &t)) + fprintf(stderr, "parse of %s(%d) [%s(%d)]", + sldns_rr_descript(type)? + sldns_rr_descript(type)->_name: "??", + (int)type, + sldns_rr_descript(t)? + sldns_rr_descript(t)->_name: "??", + (int)t); + } else + fprintf(stderr, "parse of %s(%d)", + sldns_rr_descript(type)? + sldns_rr_descript(type)->_name: "??", + (int)type); + fprintf(stderr, " %s(%d) ", + sldns_lookup_by_id(sldns_rr_classes, + (int)ntohs(dclass))?sldns_lookup_by_id( + sldns_rr_classes, (int)ntohs(dclass))->name: + "??", (int)ntohs(dclass)); + dname_print(stderr, pkt, dname); + fprintf(stderr, "\n"); + } + + /* see if it is part of an existing RR set */ + if(!find_rrset(msg, pkt, dname, dnamelen, type, dclass, &hash, + &rrset_flags, &prev_dname_f, &prev_dname_l, + &prev_dnamelen, &prev_type, &prev_dclass, &rrset, + section, region)) + return LDNS_RCODE_SERVFAIL; + if(!rrset) { + /* it is a new RR set. hash&flags already calculated.*/ + (*num_rrsets)++; + rrset = new_rrset(msg, dname, dnamelen, type, dclass, + hash, rrset_flags, section, region); + if(!rrset) + return LDNS_RCODE_SERVFAIL; + } + else if(0) { + fprintf(stderr, "is part of existing: "); + dname_print(stderr, pkt, rrset->dname); + fprintf(stderr, " type %s(%d)\n", + sldns_rr_descript(rrset->type)? + sldns_rr_descript(rrset->type)->_name: "??", + (int)rrset->type); + } + /* add to rrset. */ + if((r=add_rr_to_rrset(rrset, pkt, msg, region, section, + type)) != 0) + return r; + } + return 0; +} + +int +parse_packet(sldns_buffer* pkt, struct msg_parse* msg, struct regional* region) +{ + int ret; + if(sldns_buffer_remaining(pkt) < LDNS_HEADER_SIZE) + return LDNS_RCODE_FORMERR; + /* read the header */ + sldns_buffer_read(pkt, &msg->id, sizeof(uint16_t)); + msg->flags = sldns_buffer_read_u16(pkt); + msg->qdcount = sldns_buffer_read_u16(pkt); + msg->ancount = sldns_buffer_read_u16(pkt); + msg->nscount = sldns_buffer_read_u16(pkt); + msg->arcount = sldns_buffer_read_u16(pkt); + if(msg->qdcount > 1) + return LDNS_RCODE_FORMERR; + if((ret = parse_query_section(pkt, msg)) != 0) + return ret; + if((ret = parse_section(pkt, msg, region, LDNS_SECTION_ANSWER, + msg->ancount, &msg->an_rrsets)) != 0) + return ret; + if((ret = parse_section(pkt, msg, region, LDNS_SECTION_AUTHORITY, + msg->nscount, &msg->ns_rrsets)) != 0) + return ret; + if(sldns_buffer_remaining(pkt) == 0 && msg->arcount == 1) { + /* BIND accepts leniently that an EDNS record is missing. + * so, we do too. */ + } else if((ret = parse_section(pkt, msg, region, + LDNS_SECTION_ADDITIONAL, msg->arcount, &msg->ar_rrsets)) != 0) + return ret; + /* if(sldns_buffer_remaining(pkt) > 0) { */ + /* there is spurious data at end of packet. ignore */ + /* } */ + msg->rrset_count = msg->an_rrsets + msg->ns_rrsets + msg->ar_rrsets; + return 0; +} + +int +parse_extract_edns(struct msg_parse* msg, struct edns_data* edns) +{ + struct rrset_parse* rrset = msg->rrset_first; + struct rrset_parse* prev = 0; + struct rrset_parse* found = 0; + struct rrset_parse* found_prev = 0; + /* since the class encodes the UDP size, we cannot use hash table to + * find the EDNS OPT record. Scan the packet. */ + while(rrset) { + if(rrset->type == LDNS_RR_TYPE_OPT) { + /* only one OPT RR allowed. */ + if(found) return LDNS_RCODE_FORMERR; + /* found it! */ + found_prev = prev; + found = rrset; + } + prev = rrset; + rrset = rrset->rrset_all_next; + } + if(!found) { + memset(edns, 0, sizeof(*edns)); + edns->udp_size = 512; + return 0; + } + /* check the found RRset */ + /* most lenient check possible. ignore dname, use last opt */ + if(found->section != LDNS_SECTION_ADDITIONAL) + return LDNS_RCODE_FORMERR; + if(found->rr_count == 0) + return LDNS_RCODE_FORMERR; + if(0) { /* strict checking of dname and RRcount */ + if(found->dname_len != 1 || !found->dname + || found->dname[0] != 0) return LDNS_RCODE_FORMERR; + if(found->rr_count != 1) return LDNS_RCODE_FORMERR; + } + log_assert(found->rr_first && found->rr_last); + + /* remove from packet */ + if(found_prev) found_prev->rrset_all_next = found->rrset_all_next; + else msg->rrset_first = found->rrset_all_next; + if(found == msg->rrset_last) + msg->rrset_last = found_prev; + msg->arcount --; + msg->ar_rrsets --; + msg->rrset_count --; + + /* take the data ! */ + edns->edns_present = 1; + edns->ext_rcode = found->rr_last->ttl_data[0]; + edns->edns_version = found->rr_last->ttl_data[1]; + edns->bits = sldns_read_uint16(&found->rr_last->ttl_data[2]); + edns->udp_size = ntohs(found->rrset_class); + /* ignore rdata and rrsigs */ + return 0; +} + +int +parse_edns_from_pkt(sldns_buffer* pkt, struct edns_data* edns) +{ + log_assert(LDNS_QDCOUNT(sldns_buffer_begin(pkt)) == 1); + log_assert(LDNS_ANCOUNT(sldns_buffer_begin(pkt)) == 0); + log_assert(LDNS_NSCOUNT(sldns_buffer_begin(pkt)) == 0); + /* check edns section is present */ + if(LDNS_ARCOUNT(sldns_buffer_begin(pkt)) > 1) { + return LDNS_RCODE_FORMERR; + } + if(LDNS_ARCOUNT(sldns_buffer_begin(pkt)) == 0) { + memset(edns, 0, sizeof(*edns)); + edns->udp_size = 512; + return 0; + } + /* domain name must be the root of length 1. */ + if(pkt_dname_len(pkt) != 1) + return LDNS_RCODE_FORMERR; + if(sldns_buffer_remaining(pkt) < 10) /* type, class, ttl, rdatalen */ + return LDNS_RCODE_FORMERR; + if(sldns_buffer_read_u16(pkt) != LDNS_RR_TYPE_OPT) + return LDNS_RCODE_FORMERR; + edns->edns_present = 1; + edns->udp_size = sldns_buffer_read_u16(pkt); /* class is udp size */ + edns->ext_rcode = sldns_buffer_read_u8(pkt); /* ttl used for bits */ + edns->edns_version = sldns_buffer_read_u8(pkt); + edns->bits = sldns_buffer_read_u16(pkt); + /* ignore rdata and rrsigs */ + return 0; +} diff --git a/external/unbound/util/data/msgparse.h b/external/unbound/util/data/msgparse.h new file mode 100644 index 000000000..221a45aad --- /dev/null +++ b/external/unbound/util/data/msgparse.h @@ -0,0 +1,301 @@ +/* + * util/data/msgparse.h - parse wireformat DNS messages. + * + * Copyright (c) 2007, NLnet Labs. All rights reserved. + * + * This software is open source. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * Neither the name of the NLNET LABS nor the names of its contributors may + * be used to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ +/** + * \file + * Contains message parsing data structures. + * These point back into the packet buffer. + * + * During parsing RRSIGS are put together with the rrsets they (claim to) sign. + * This process works as follows: + * o if RRSIG follows the data rrset, it is added to the rrset rrsig list. + * o if no matching data rrset is found, the RRSIG becomes a new rrset. + * o If the data rrset later follows the RRSIG + * o See if the RRSIG rrset contains multiple types, and needs to + * have the rrsig(s) for that data type split off. + * o Put the data rr as data type in the rrset and rrsig in list. + * o RRSIGs are allowed to move to a different section. The section of + * the data item is used for the final rrset. + * o multiple signatures over an RRset are possible. + * + * For queries of qtype=RRSIG, some special handling is needed, to avoid + * splitting the RRSIG in the answer section. + * o duplicate, not split, RRSIGs from the answer section, if qtype=RRSIG. + * o check for doubles in the rrsig list when adding an RRSIG to data, + * so that a data rrset is signed by RRSIGs with different rdata. + * when qtype=RRSIG. + * This will move the RRSIG from the answer section to sign the data further + * in the packet (if possible). If then after that, more RRSIGs are found + * that sign the data as well, doubles are removed. + */ + +#ifndef UTIL_DATA_MSGPARSE_H +#define UTIL_DATA_MSGPARSE_H +#include "util/storage/lruhash.h" +#include "ldns/pkthdr.h" +#include "ldns/rrdef.h" +struct sldns_buffer; +struct rrset_parse; +struct rr_parse; +struct regional; + +/** number of buckets in parse rrset hash table. Must be power of 2. */ +#define PARSE_TABLE_SIZE 32 +/** Maximum TTL that is allowed. */ +extern time_t MAX_TTL; +/** Minimum TTL that is allowed. */ +extern time_t MIN_TTL; +/** Negative cache time (for entries without any RRs.) */ +#define NORR_TTL 5 /* seconds */ + +/** + * Data stored in scratch pad memory during parsing. + * Stores the data that will enter into the msgreply and packet result. + */ +struct msg_parse { + /** id from message, network format. */ + uint16_t id; + /** flags from message, host format. */ + uint16_t flags; + /** count of RRs, host format */ + uint16_t qdcount; + /** count of RRs, host format */ + uint16_t ancount; + /** count of RRs, host format */ + uint16_t nscount; + /** count of RRs, host format */ + uint16_t arcount; + /** count of RRsets per section. */ + size_t an_rrsets; + /** count of RRsets per section. */ + size_t ns_rrsets; + /** count of RRsets per section. */ + size_t ar_rrsets; + /** total number of rrsets found. */ + size_t rrset_count; + + /** query dname (pointer to start location in packet, NULL if none */ + uint8_t* qname; + /** length of query dname in octets, 0 if none */ + size_t qname_len; + /** query type, host order. 0 if qdcount=0 */ + uint16_t qtype; + /** query class, host order. 0 if qdcount=0 */ + uint16_t qclass; + + /** + * Hash table array used during parsing to lookup rrset types. + * Based on name, type, class. Same hash value as in rrset cache. + */ + struct rrset_parse* hashtable[PARSE_TABLE_SIZE]; + + /** linked list of rrsets that have been found (in order). */ + struct rrset_parse* rrset_first; + /** last element of rrset list. */ + struct rrset_parse* rrset_last; +}; + +/** + * Data stored for an rrset during parsing. + */ +struct rrset_parse { + /** next in hash bucket */ + struct rrset_parse* rrset_bucket_next; + /** next in list of all rrsets */ + struct rrset_parse* rrset_all_next; + /** hash value of rrset */ + hashvalue_t hash; + /** which section was it found in: one of + * LDNS_SECTION_ANSWER, LDNS_SECTION_AUTHORITY, LDNS_SECTION_ADDITIONAL + */ + sldns_pkt_section section; + /** start of (possibly compressed) dname in packet */ + uint8_t* dname; + /** length of the dname uncompressed wireformat */ + size_t dname_len; + /** type, host order. */ + uint16_t type; + /** class, network order. var name so that it is not a c++ keyword. */ + uint16_t rrset_class; + /** the flags for the rrset, like for packedrrset */ + uint32_t flags; + /** number of RRs in the rr list */ + size_t rr_count; + /** sum of RR rdata sizes */ + size_t size; + /** linked list of RRs in this rrset. */ + struct rr_parse* rr_first; + /** last in list of RRs in this rrset. */ + struct rr_parse* rr_last; + /** number of RRSIGs over this rrset. */ + size_t rrsig_count; + /** linked list of RRsig RRs over this rrset. */ + struct rr_parse* rrsig_first; + /** last in list of RRSIG RRs over this rrset. */ + struct rr_parse* rrsig_last; +}; + +/** + * Data stored for an RR during parsing. + */ +struct rr_parse { + /** + * Pointer to the RR. Points to start of TTL value in the packet. + * Rdata length and rdata follow it. + * its dname, type and class are the same and stored for the rrset. + */ + uint8_t* ttl_data; + /** true if ttl_data is not part of the packet, but elsewhere in mem. + * Set for generated CNAMEs for DNAMEs. */ + int outside_packet; + /** the length of the rdata if allocated (with no dname compression)*/ + size_t size; + /** next in list of RRs. */ + struct rr_parse* next; +}; + +/** Check if label length is first octet of a compression pointer, pass u8. */ +#define LABEL_IS_PTR(x) ( ((x)&0xc0) == 0xc0 ) +/** Calculate destination offset of a compression pointer. pass first and + * second octets of the compression pointer. */ +#define PTR_OFFSET(x, y) ( ((x)&0x3f)<<8 | (y) ) +/** create a compression pointer to the given offset. */ +#define PTR_CREATE(offset) ((uint16_t)(0xc000 | (offset))) + +/** error codes, extended with EDNS, so > 15. */ +#define EDNS_RCODE_BADVERS 16 /** bad EDNS version */ +/** largest valid compression offset */ +#define PTR_MAX_OFFSET 0x3fff + +/** + * EDNS data storage + * EDNS rdata is ignored. + */ +struct edns_data { + /** if EDNS OPT record was present */ + int edns_present; + /** Extended RCODE */ + uint8_t ext_rcode; + /** The EDNS version number */ + uint8_t edns_version; + /** the EDNS bits field from ttl (host order): Z */ + uint16_t bits; + /** UDP reassembly size. */ + uint16_t udp_size; +}; + +/** + * Obtain size in the packet of an rr type, that is before dname type. + * Do TYPE_DNAME, and type STR, yourself. Gives size for most regular types. + * @param rdf: the rdf type from the descriptor. + * @return: size in octets. 0 on failure. + */ +size_t get_rdf_size(sldns_rdf_type rdf); + +/** + * Parse the packet. + * @param pkt: packet, position at call must be at start of packet. + * at end position is after packet. + * @param msg: where to store results. + * @param region: how to alloc results. + * @return: 0 if OK, or rcode on error. + */ +int parse_packet(struct sldns_buffer* pkt, struct msg_parse* msg, + struct regional* region); + +/** + * After parsing the packet, extract EDNS data from packet. + * If not present this is noted in the data structure. + * If a parse error happens, an error code is returned. + * + * Quirks: + * o ignores OPT rdata. + * o ignores OPT owner name. + * o ignores extra OPT records, except the last one in the packet. + * + * @param msg: parsed message structure. Modified on exit, if EDNS was present + * it is removed from the additional section. + * @param edns: the edns data is stored here. Does not have to be initialised. + * @return: 0 on success. or an RCODE on an error. + * RCODE formerr if OPT in wrong section, and so on. + */ +int parse_extract_edns(struct msg_parse* msg, struct edns_data* edns); + +/** + * If EDNS data follows a query section, extract it and initialize edns struct. + * @param pkt: the packet. position at start must be right after the query + * section. At end, right after EDNS data or no movement if failed. + * @param edns: the edns data allocated by the caller. Does not have to be + * initialised. + * @return: 0 on success, or an RCODE on error. + * RCODE formerr if OPT is badly formatted and so on. + */ +int parse_edns_from_pkt(struct sldns_buffer* pkt, struct edns_data* edns); + +/** + * Calculate hash value for rrset in packet. + * @param pkt: the packet. + * @param dname: pointer to uncompressed dname, or compressed dname in packet. + * @param type: rrset type in host order. + * @param dclass: rrset class in network order. + * @param rrset_flags: rrset flags (same as packed_rrset flags). + * @return hash value + */ +hashvalue_t pkt_hash_rrset(struct sldns_buffer* pkt, uint8_t* dname, uint16_t type, + uint16_t dclass, uint32_t rrset_flags); + +/** + * Lookup in msg hashtable to find a rrset. + * @param msg: with the hashtable. + * @param pkt: packet for compressed names. + * @param h: hash value + * @param rrset_flags: flags of rrset sought for. + * @param dname: name of rrset sought for. + * @param dnamelen: len of dname. + * @param type: rrset type, host order. + * @param dclass: rrset class, network order. + * @return NULL or the rrset_parse if found. + */ +struct rrset_parse* msgparse_hashtable_lookup(struct msg_parse* msg, + struct sldns_buffer* pkt, hashvalue_t h, uint32_t rrset_flags, + uint8_t* dname, size_t dnamelen, uint16_t type, uint16_t dclass); + +/** + * Remove rrset from hash table. + * @param msg: with hashtable. + * @param rrset: with hash value and id info. + */ +void msgparse_bucket_remove(struct msg_parse* msg, struct rrset_parse* rrset); + +#endif /* UTIL_DATA_MSGPARSE_H */ diff --git a/external/unbound/util/data/msgreply.c b/external/unbound/util/data/msgreply.c new file mode 100644 index 000000000..126e7bef4 --- /dev/null +++ b/external/unbound/util/data/msgreply.c @@ -0,0 +1,830 @@ +/* + * util/data/msgreply.c - store message and reply data. + * + * Copyright (c) 2007, NLnet Labs. All rights reserved. + * + * This software is open source. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * Neither the name of the NLNET LABS nor the names of its contributors may + * be used to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/** + * \file + * + * This file contains a data structure to store a message and its reply. + */ + +#include "config.h" +#include "util/data/msgreply.h" +#include "util/storage/lookup3.h" +#include "util/log.h" +#include "util/alloc.h" +#include "util/netevent.h" +#include "util/net_help.h" +#include "util/data/dname.h" +#include "util/regional.h" +#include "util/data/msgparse.h" +#include "util/data/msgencode.h" +#include "ldns/sbuffer.h" +#include "ldns/wire2str.h" + +/** MAX TTL default for messages and rrsets */ +time_t MAX_TTL = 3600 * 24 * 10; /* ten days */ +/** MIN TTL default for messages and rrsets */ +time_t MIN_TTL = 0; + +/** allocate qinfo, return 0 on error */ +static int +parse_create_qinfo(sldns_buffer* pkt, struct msg_parse* msg, + struct query_info* qinf, struct regional* region) +{ + if(msg->qname) { + if(region) + qinf->qname = (uint8_t*)regional_alloc(region, + msg->qname_len); + else qinf->qname = (uint8_t*)malloc(msg->qname_len); + if(!qinf->qname) return 0; + dname_pkt_copy(pkt, qinf->qname, msg->qname); + } else qinf->qname = 0; + qinf->qname_len = msg->qname_len; + qinf->qtype = msg->qtype; + qinf->qclass = msg->qclass; + return 1; +} + +/** constructor for replyinfo */ +struct reply_info* +construct_reply_info_base(struct regional* region, uint16_t flags, size_t qd, + time_t ttl, time_t prettl, size_t an, size_t ns, size_t ar, + size_t total, enum sec_status sec) +{ + struct reply_info* rep; + /* rrset_count-1 because the first ref is part of the struct. */ + size_t s = sizeof(struct reply_info) - sizeof(struct rrset_ref) + + sizeof(struct ub_packed_rrset_key*) * total; + if(region) + rep = (struct reply_info*)regional_alloc(region, s); + else rep = (struct reply_info*)malloc(s + + sizeof(struct rrset_ref) * (total)); + if(!rep) + return NULL; + rep->flags = flags; + rep->qdcount = qd; + rep->ttl = ttl; + rep->prefetch_ttl = prettl; + rep->an_numrrsets = an; + rep->ns_numrrsets = ns; + rep->ar_numrrsets = ar; + rep->rrset_count = total; + rep->security = sec; + rep->authoritative = 0; + /* array starts after the refs */ + if(region) + rep->rrsets = (struct ub_packed_rrset_key**)&(rep->ref[0]); + else rep->rrsets = (struct ub_packed_rrset_key**)&(rep->ref[total]); + /* zero the arrays to assist cleanup in case of malloc failure */ + memset( rep->rrsets, 0, sizeof(struct ub_packed_rrset_key*) * total); + if(!region) + memset( &rep->ref[0], 0, sizeof(struct rrset_ref) * total); + return rep; +} + +/** allocate replyinfo, return 0 on error */ +static int +parse_create_repinfo(struct msg_parse* msg, struct reply_info** rep, + struct regional* region) +{ + *rep = construct_reply_info_base(region, msg->flags, msg->qdcount, 0, + 0, msg->an_rrsets, msg->ns_rrsets, msg->ar_rrsets, + msg->rrset_count, sec_status_unchecked); + if(!*rep) + return 0; + return 1; +} + +/** allocate (special) rrset keys, return 0 on error */ +static int +repinfo_alloc_rrset_keys(struct reply_info* rep, struct alloc_cache* alloc, + struct regional* region) +{ + size_t i; + for(i=0; i<rep->rrset_count; i++) { + if(region) { + rep->rrsets[i] = (struct ub_packed_rrset_key*) + regional_alloc(region, + sizeof(struct ub_packed_rrset_key)); + if(rep->rrsets[i]) { + memset(rep->rrsets[i], 0, + sizeof(struct ub_packed_rrset_key)); + rep->rrsets[i]->entry.key = rep->rrsets[i]; + } + } + else rep->rrsets[i] = alloc_special_obtain(alloc); + if(!rep->rrsets[i]) + return 0; + rep->rrsets[i]->entry.data = NULL; + } + return 1; +} + +/** do the rdata copy */ +static int +rdata_copy(sldns_buffer* pkt, struct packed_rrset_data* data, uint8_t* to, + struct rr_parse* rr, time_t* rr_ttl, uint16_t type) +{ + uint16_t pkt_len; + const sldns_rr_descriptor* desc; + + *rr_ttl = sldns_read_uint32(rr->ttl_data); + /* RFC 2181 Section 8. if msb of ttl is set treat as if zero. */ + if(*rr_ttl & 0x80000000U) + *rr_ttl = 0; + if(*rr_ttl < MIN_TTL) + *rr_ttl = MIN_TTL; + if(*rr_ttl < data->ttl) + data->ttl = *rr_ttl; + + if(rr->outside_packet) { + /* uncompressed already, only needs copy */ + memmove(to, rr->ttl_data+sizeof(uint32_t), rr->size); + return 1; + } + + sldns_buffer_set_position(pkt, (size_t) + (rr->ttl_data - sldns_buffer_begin(pkt) + sizeof(uint32_t))); + /* insert decompressed size into rdata len stored in memory */ + /* -2 because rdatalen bytes are not included. */ + pkt_len = htons(rr->size - 2); + memmove(to, &pkt_len, sizeof(uint16_t)); + to += 2; + /* read packet rdata len */ + pkt_len = sldns_buffer_read_u16(pkt); + if(sldns_buffer_remaining(pkt) < pkt_len) + return 0; + desc = sldns_rr_descript(type); + if(pkt_len > 0 && desc && desc->_dname_count > 0) { + int count = (int)desc->_dname_count; + int rdf = 0; + size_t len; + size_t oldpos; + /* decompress dnames. */ + while(pkt_len > 0 && count) { + switch(desc->_wireformat[rdf]) { + case LDNS_RDF_TYPE_DNAME: + oldpos = sldns_buffer_position(pkt); + dname_pkt_copy(pkt, to, + sldns_buffer_current(pkt)); + to += pkt_dname_len(pkt); + pkt_len -= sldns_buffer_position(pkt)-oldpos; + count--; + len = 0; + break; + case LDNS_RDF_TYPE_STR: + len = sldns_buffer_current(pkt)[0] + 1; + break; + default: + len = get_rdf_size(desc->_wireformat[rdf]); + break; + } + if(len) { + memmove(to, sldns_buffer_current(pkt), len); + to += len; + sldns_buffer_skip(pkt, (ssize_t)len); + log_assert(len <= pkt_len); + pkt_len -= len; + } + rdf++; + } + } + /* copy remaining rdata */ + if(pkt_len > 0) + memmove(to, sldns_buffer_current(pkt), pkt_len); + + return 1; +} + +/** copy over the data into packed rrset */ +static int +parse_rr_copy(sldns_buffer* pkt, struct rrset_parse* pset, + struct packed_rrset_data* data) +{ + size_t i; + struct rr_parse* rr = pset->rr_first; + uint8_t* nextrdata; + size_t total = pset->rr_count + pset->rrsig_count; + data->ttl = MAX_TTL; + data->count = pset->rr_count; + data->rrsig_count = pset->rrsig_count; + data->trust = rrset_trust_none; + data->security = sec_status_unchecked; + /* layout: struct - rr_len - rr_data - rr_ttl - rdata - rrsig */ + data->rr_len = (size_t*)((uint8_t*)data + + sizeof(struct packed_rrset_data)); + data->rr_data = (uint8_t**)&(data->rr_len[total]); + data->rr_ttl = (time_t*)&(data->rr_data[total]); + nextrdata = (uint8_t*)&(data->rr_ttl[total]); + for(i=0; i<data->count; i++) { + data->rr_len[i] = rr->size; + data->rr_data[i] = nextrdata; + nextrdata += rr->size; + if(!rdata_copy(pkt, data, data->rr_data[i], rr, + &data->rr_ttl[i], pset->type)) + return 0; + rr = rr->next; + } + /* if rrsig, its rdata is at nextrdata */ + rr = pset->rrsig_first; + for(i=data->count; i<total; i++) { + data->rr_len[i] = rr->size; + data->rr_data[i] = nextrdata; + nextrdata += rr->size; + if(!rdata_copy(pkt, data, data->rr_data[i], rr, + &data->rr_ttl[i], LDNS_RR_TYPE_RRSIG)) + return 0; + rr = rr->next; + } + return 1; +} + +/** create rrset return 0 on failure */ +static int +parse_create_rrset(sldns_buffer* pkt, struct rrset_parse* pset, + struct packed_rrset_data** data, struct regional* region) +{ + /* allocate */ + size_t s = sizeof(struct packed_rrset_data) + + (pset->rr_count + pset->rrsig_count) * + (sizeof(size_t)+sizeof(uint8_t*)+sizeof(time_t)) + + pset->size; + if(region) + *data = regional_alloc(region, s); + else *data = malloc(s); + if(!*data) + return 0; + /* copy & decompress */ + if(!parse_rr_copy(pkt, pset, *data)) { + if(!region) free(*data); + return 0; + } + return 1; +} + +/** get trust value for rrset */ +static enum rrset_trust +get_rrset_trust(struct msg_parse* msg, struct rrset_parse* rrset) +{ + uint16_t AA = msg->flags & BIT_AA; + if(rrset->section == LDNS_SECTION_ANSWER) { + if(AA) { + /* RFC2181 says remainder of CNAME chain is nonauth*/ + if(msg->rrset_first && + msg->rrset_first->section==LDNS_SECTION_ANSWER + && msg->rrset_first->type==LDNS_RR_TYPE_CNAME){ + if(rrset == msg->rrset_first) + return rrset_trust_ans_AA; + else return rrset_trust_ans_noAA; + } + if(msg->rrset_first && + msg->rrset_first->section==LDNS_SECTION_ANSWER + && msg->rrset_first->type==LDNS_RR_TYPE_DNAME){ + if(rrset == msg->rrset_first || + rrset == msg->rrset_first->rrset_all_next) + return rrset_trust_ans_AA; + else return rrset_trust_ans_noAA; + } + return rrset_trust_ans_AA; + } + else return rrset_trust_ans_noAA; + } else if(rrset->section == LDNS_SECTION_AUTHORITY) { + if(AA) return rrset_trust_auth_AA; + else return rrset_trust_auth_noAA; + } else { + /* addit section */ + if(AA) return rrset_trust_add_AA; + else return rrset_trust_add_noAA; + } + /* NOTREACHED */ + return rrset_trust_none; +} + +int +parse_copy_decompress_rrset(sldns_buffer* pkt, struct msg_parse* msg, + struct rrset_parse *pset, struct regional* region, + struct ub_packed_rrset_key* pk) +{ + struct packed_rrset_data* data; + pk->rk.flags = pset->flags; + pk->rk.dname_len = pset->dname_len; + if(region) + pk->rk.dname = (uint8_t*)regional_alloc( + region, pset->dname_len); + else pk->rk.dname = + (uint8_t*)malloc(pset->dname_len); + if(!pk->rk.dname) + return 0; + /** copy & decompress dname */ + dname_pkt_copy(pkt, pk->rk.dname, pset->dname); + /** copy over type and class */ + pk->rk.type = htons(pset->type); + pk->rk.rrset_class = pset->rrset_class; + /** read data part. */ + if(!parse_create_rrset(pkt, pset, &data, region)) + return 0; + pk->entry.data = (void*)data; + pk->entry.key = (void*)pk; + pk->entry.hash = pset->hash; + data->trust = get_rrset_trust(msg, pset); + return 1; +} + +/** + * Copy and decompress rrs + * @param pkt: the packet for compression pointer resolution. + * @param msg: the parsed message + * @param rep: reply info to put rrs into. + * @param region: if not NULL, used for allocation. + * @return 0 on failure. + */ +static int +parse_copy_decompress(sldns_buffer* pkt, struct msg_parse* msg, + struct reply_info* rep, struct regional* region) +{ + size_t i; + struct rrset_parse *pset = msg->rrset_first; + struct packed_rrset_data* data; + log_assert(rep); + rep->ttl = MAX_TTL; + rep->security = sec_status_unchecked; + if(rep->rrset_count == 0) + rep->ttl = NORR_TTL; + + for(i=0; i<rep->rrset_count; i++) { + if(!parse_copy_decompress_rrset(pkt, msg, pset, region, + rep->rrsets[i])) + return 0; + data = (struct packed_rrset_data*)rep->rrsets[i]->entry.data; + if(data->ttl < rep->ttl) + rep->ttl = data->ttl; + + pset = pset->rrset_all_next; + } + rep->prefetch_ttl = PREFETCH_TTL_CALC(rep->ttl); + return 1; +} + +int +parse_create_msg(sldns_buffer* pkt, struct msg_parse* msg, + struct alloc_cache* alloc, struct query_info* qinf, + struct reply_info** rep, struct regional* region) +{ + log_assert(pkt && msg); + if(!parse_create_qinfo(pkt, msg, qinf, region)) + return 0; + if(!parse_create_repinfo(msg, rep, region)) + return 0; + if(!repinfo_alloc_rrset_keys(*rep, alloc, region)) + return 0; + if(!parse_copy_decompress(pkt, msg, *rep, region)) + return 0; + return 1; +} + +int reply_info_parse(sldns_buffer* pkt, struct alloc_cache* alloc, + struct query_info* qinf, struct reply_info** rep, + struct regional* region, struct edns_data* edns) +{ + /* use scratch pad region-allocator during parsing. */ + struct msg_parse* msg; + int ret; + + qinf->qname = NULL; + *rep = NULL; + if(!(msg = regional_alloc(region, sizeof(*msg)))) { + return LDNS_RCODE_SERVFAIL; + } + memset(msg, 0, sizeof(*msg)); + + sldns_buffer_set_position(pkt, 0); + if((ret = parse_packet(pkt, msg, region)) != 0) { + return ret; + } + if((ret = parse_extract_edns(msg, edns)) != 0) + return ret; + + /* parse OK, allocate return structures */ + /* this also performs dname decompression */ + if(!parse_create_msg(pkt, msg, alloc, qinf, rep, NULL)) { + query_info_clear(qinf); + reply_info_parsedelete(*rep, alloc); + *rep = NULL; + return LDNS_RCODE_SERVFAIL; + } + return 0; +} + +/** helper compare function to sort in lock order */ +static int +reply_info_sortref_cmp(const void* a, const void* b) +{ + struct rrset_ref* x = (struct rrset_ref*)a; + struct rrset_ref* y = (struct rrset_ref*)b; + if(x->key < y->key) return -1; + if(x->key > y->key) return 1; + return 0; +} + +void +reply_info_sortref(struct reply_info* rep) +{ + qsort(&rep->ref[0], rep->rrset_count, sizeof(struct rrset_ref), + reply_info_sortref_cmp); +} + +void +reply_info_set_ttls(struct reply_info* rep, time_t timenow) +{ + size_t i, j; + rep->ttl += timenow; + rep->prefetch_ttl += timenow; + for(i=0; i<rep->rrset_count; i++) { + struct packed_rrset_data* data = (struct packed_rrset_data*) + rep->ref[i].key->entry.data; + if(i>0 && rep->ref[i].key == rep->ref[i-1].key) + continue; + data->ttl += timenow; + for(j=0; j<data->count + data->rrsig_count; j++) { + data->rr_ttl[j] += timenow; + } + } +} + +void +reply_info_parsedelete(struct reply_info* rep, struct alloc_cache* alloc) +{ + size_t i; + if(!rep) + return; + /* no need to lock, since not shared in hashtables. */ + for(i=0; i<rep->rrset_count; i++) { + ub_packed_rrset_parsedelete(rep->rrsets[i], alloc); + } + free(rep); +} + +int +query_info_parse(struct query_info* m, sldns_buffer* query) +{ + uint8_t* q = sldns_buffer_begin(query); + /* minimum size: header + \0 + qtype + qclass */ + if(sldns_buffer_limit(query) < LDNS_HEADER_SIZE + 5) + return 0; + if(LDNS_OPCODE_WIRE(q) != LDNS_PACKET_QUERY || + LDNS_QDCOUNT(q) != 1 || sldns_buffer_position(query) != 0) + return 0; + sldns_buffer_skip(query, LDNS_HEADER_SIZE); + m->qname = sldns_buffer_current(query); + if((m->qname_len = query_dname_len(query)) == 0) + return 0; /* parse error */ + if(sldns_buffer_remaining(query) < 4) + return 0; /* need qtype, qclass */ + m->qtype = sldns_buffer_read_u16(query); + m->qclass = sldns_buffer_read_u16(query); + return 1; +} + +/** tiny subroutine for msgreply_compare */ +#define COMPARE_IT(x, y) \ + if( (x) < (y) ) return -1; \ + else if( (x) > (y) ) return +1; \ + log_assert( (x) == (y) ); + +int +query_info_compare(void* m1, void* m2) +{ + struct query_info* msg1 = (struct query_info*)m1; + struct query_info* msg2 = (struct query_info*)m2; + int mc; + /* from most different to least different for speed */ + COMPARE_IT(msg1->qtype, msg2->qtype); + if((mc = query_dname_compare(msg1->qname, msg2->qname)) != 0) + return mc; + log_assert(msg1->qname_len == msg2->qname_len); + COMPARE_IT(msg1->qclass, msg2->qclass); + return 0; +#undef COMPARE_IT +} + +void +query_info_clear(struct query_info* m) +{ + free(m->qname); + m->qname = NULL; +} + +size_t +msgreply_sizefunc(void* k, void* d) +{ + struct msgreply_entry* q = (struct msgreply_entry*)k; + struct reply_info* r = (struct reply_info*)d; + size_t s = sizeof(struct msgreply_entry) + sizeof(struct reply_info) + + q->key.qname_len + lock_get_mem(&q->entry.lock) + - sizeof(struct rrset_ref); + s += r->rrset_count * sizeof(struct rrset_ref); + s += r->rrset_count * sizeof(struct ub_packed_rrset_key*); + return s; +} + +void +query_entry_delete(void *k, void* ATTR_UNUSED(arg)) +{ + struct msgreply_entry* q = (struct msgreply_entry*)k; + lock_rw_destroy(&q->entry.lock); + query_info_clear(&q->key); + free(q); +} + +void +reply_info_delete(void* d, void* ATTR_UNUSED(arg)) +{ + struct reply_info* r = (struct reply_info*)d; + free(r); +} + +hashvalue_t +query_info_hash(struct query_info *q) +{ + hashvalue_t h = 0xab; + h = hashlittle(&q->qtype, sizeof(q->qtype), h); + h = hashlittle(&q->qclass, sizeof(q->qclass), h); + h = dname_query_hash(q->qname, h); + return h; +} + +struct msgreply_entry* +query_info_entrysetup(struct query_info* q, struct reply_info* r, + hashvalue_t h) +{ + struct msgreply_entry* e = (struct msgreply_entry*)malloc( + sizeof(struct msgreply_entry)); + if(!e) return NULL; + memcpy(&e->key, q, sizeof(*q)); + e->entry.hash = h; + e->entry.key = e; + e->entry.data = r; + lock_rw_init(&e->entry.lock); + lock_protect(&e->entry.lock, &e->key, sizeof(e->key)); + lock_protect(&e->entry.lock, &e->entry.hash, sizeof(e->entry.hash) + + sizeof(e->entry.key) + sizeof(e->entry.data)); + lock_protect(&e->entry.lock, e->key.qname, e->key.qname_len); + q->qname = NULL; + return e; +} + +/** copy rrsets from replyinfo to dest replyinfo */ +static int +repinfo_copy_rrsets(struct reply_info* dest, struct reply_info* from, + struct regional* region) +{ + size_t i, s; + struct packed_rrset_data* fd, *dd; + struct ub_packed_rrset_key* fk, *dk; + for(i=0; i<dest->rrset_count; i++) { + fk = from->rrsets[i]; + dk = dest->rrsets[i]; + fd = (struct packed_rrset_data*)fk->entry.data; + dk->entry.hash = fk->entry.hash; + dk->rk = fk->rk; + if(region) { + dk->id = fk->id; + dk->rk.dname = (uint8_t*)regional_alloc_init(region, + fk->rk.dname, fk->rk.dname_len); + } else + dk->rk.dname = (uint8_t*)memdup(fk->rk.dname, + fk->rk.dname_len); + if(!dk->rk.dname) + return 0; + s = packed_rrset_sizeof(fd); + if(region) + dd = (struct packed_rrset_data*)regional_alloc_init( + region, fd, s); + else dd = (struct packed_rrset_data*)memdup(fd, s); + if(!dd) + return 0; + packed_rrset_ptr_fixup(dd); + dk->entry.data = (void*)dd; + } + return 1; +} + +struct reply_info* +reply_info_copy(struct reply_info* rep, struct alloc_cache* alloc, + struct regional* region) +{ + struct reply_info* cp; + cp = construct_reply_info_base(region, rep->flags, rep->qdcount, + rep->ttl, rep->prefetch_ttl, rep->an_numrrsets, + rep->ns_numrrsets, rep->ar_numrrsets, rep->rrset_count, + rep->security); + if(!cp) + return NULL; + /* allocate ub_key structures special or not */ + if(!repinfo_alloc_rrset_keys(cp, alloc, region)) { + if(!region) + reply_info_parsedelete(cp, alloc); + return NULL; + } + if(!repinfo_copy_rrsets(cp, rep, region)) { + if(!region) + reply_info_parsedelete(cp, alloc); + return NULL; + } + return cp; +} + +uint8_t* +reply_find_final_cname_target(struct query_info* qinfo, struct reply_info* rep) +{ + uint8_t* sname = qinfo->qname; + size_t snamelen = qinfo->qname_len; + size_t i; + for(i=0; i<rep->an_numrrsets; i++) { + struct ub_packed_rrset_key* s = rep->rrsets[i]; + /* follow CNAME chain (if any) */ + if(ntohs(s->rk.type) == LDNS_RR_TYPE_CNAME && + ntohs(s->rk.rrset_class) == qinfo->qclass && + snamelen == s->rk.dname_len && + query_dname_compare(sname, s->rk.dname) == 0) { + get_cname_target(s, &sname, &snamelen); + } + } + if(sname != qinfo->qname) + return sname; + return NULL; +} + +struct ub_packed_rrset_key* +reply_find_answer_rrset(struct query_info* qinfo, struct reply_info* rep) +{ + uint8_t* sname = qinfo->qname; + size_t snamelen = qinfo->qname_len; + size_t i; + for(i=0; i<rep->an_numrrsets; i++) { + struct ub_packed_rrset_key* s = rep->rrsets[i]; + /* first match type, for query of qtype cname */ + if(ntohs(s->rk.type) == qinfo->qtype && + ntohs(s->rk.rrset_class) == qinfo->qclass && + snamelen == s->rk.dname_len && + query_dname_compare(sname, s->rk.dname) == 0) { + return s; + } + /* follow CNAME chain (if any) */ + if(ntohs(s->rk.type) == LDNS_RR_TYPE_CNAME && + ntohs(s->rk.rrset_class) == qinfo->qclass && + snamelen == s->rk.dname_len && + query_dname_compare(sname, s->rk.dname) == 0) { + get_cname_target(s, &sname, &snamelen); + } + } + return NULL; +} + +struct ub_packed_rrset_key* reply_find_rrset_section_an(struct reply_info* rep, + uint8_t* name, size_t namelen, uint16_t type, uint16_t dclass) +{ + size_t i; + for(i=0; i<rep->an_numrrsets; i++) { + struct ub_packed_rrset_key* s = rep->rrsets[i]; + if(ntohs(s->rk.type) == type && + ntohs(s->rk.rrset_class) == dclass && + namelen == s->rk.dname_len && + query_dname_compare(name, s->rk.dname) == 0) { + return s; + } + } + return NULL; +} + +struct ub_packed_rrset_key* reply_find_rrset_section_ns(struct reply_info* rep, + uint8_t* name, size_t namelen, uint16_t type, uint16_t dclass) +{ + size_t i; + for(i=rep->an_numrrsets; i<rep->an_numrrsets+rep->ns_numrrsets; i++) { + struct ub_packed_rrset_key* s = rep->rrsets[i]; + if(ntohs(s->rk.type) == type && + ntohs(s->rk.rrset_class) == dclass && + namelen == s->rk.dname_len && + query_dname_compare(name, s->rk.dname) == 0) { + return s; + } + } + return NULL; +} + +struct ub_packed_rrset_key* reply_find_rrset(struct reply_info* rep, + uint8_t* name, size_t namelen, uint16_t type, uint16_t dclass) +{ + size_t i; + for(i=0; i<rep->rrset_count; i++) { + struct ub_packed_rrset_key* s = rep->rrsets[i]; + if(ntohs(s->rk.type) == type && + ntohs(s->rk.rrset_class) == dclass && + namelen == s->rk.dname_len && + query_dname_compare(name, s->rk.dname) == 0) { + return s; + } + } + return NULL; +} + +void +log_dns_msg(const char* str, struct query_info* qinfo, struct reply_info* rep) +{ + /* not particularly fast but flexible, make wireformat and print */ + sldns_buffer* buf = sldns_buffer_new(65535); + struct regional* region = regional_create(); + if(!reply_info_encode(qinfo, rep, 0, rep->flags, buf, 0, + region, 65535, 1)) { + log_info("%s: log_dns_msg: out of memory", str); + } else { + char* str = sldns_wire2str_pkt(sldns_buffer_begin(buf), + sldns_buffer_limit(buf)); + if(!str) { + log_info("%s: log_dns_msg: ldns tostr failed", str); + } else { + log_info("%s %s", + str, (char*)sldns_buffer_begin(buf)); + } + free(str); + } + sldns_buffer_free(buf); + regional_destroy(region); +} + +void +log_query_info(enum verbosity_value v, const char* str, + struct query_info* qinf) +{ + log_nametypeclass(v, str, qinf->qname, qinf->qtype, qinf->qclass); +} + +int +reply_check_cname_chain(struct reply_info* rep) +{ + /* check only answer section rrs for matching cname chain. + * the cache may return changed rdata, but owner names are untouched.*/ + size_t i; + uint8_t* sname = rep->rrsets[0]->rk.dname; + size_t snamelen = rep->rrsets[0]->rk.dname_len; + for(i=0; i<rep->an_numrrsets; i++) { + uint16_t t = ntohs(rep->rrsets[i]->rk.type); + if(t == LDNS_RR_TYPE_DNAME) + continue; /* skip dnames; note TTL 0 not cached */ + /* verify that owner matches current sname */ + if(query_dname_compare(sname, rep->rrsets[i]->rk.dname) != 0){ + /* cname chain broken */ + return 0; + } + /* if this is a cname; move on */ + if(t == LDNS_RR_TYPE_CNAME) { + get_cname_target(rep->rrsets[i], &sname, &snamelen); + } + } + return 1; +} + +int +reply_all_rrsets_secure(struct reply_info* rep) +{ + size_t i; + for(i=0; i<rep->rrset_count; i++) { + if( ((struct packed_rrset_data*)rep->rrsets[i]->entry.data) + ->security != sec_status_secure ) + return 0; + } + return 1; +} diff --git a/external/unbound/util/data/msgreply.h b/external/unbound/util/data/msgreply.h new file mode 100644 index 000000000..ccbd0d748 --- /dev/null +++ b/external/unbound/util/data/msgreply.h @@ -0,0 +1,438 @@ +/* + * util/data/msgreply.h - store message and reply data. + * + * Copyright (c) 2007, NLnet Labs. All rights reserved. + * + * This software is open source. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * Neither the name of the NLNET LABS nor the names of its contributors may + * be used to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/** + * \file + * + * This file contains a data structure to store a message and its reply. + */ + +#ifndef UTIL_DATA_MSGREPLY_H +#define UTIL_DATA_MSGREPLY_H +#include "util/storage/lruhash.h" +#include "util/data/packed_rrset.h" +struct sldns_buffer; +struct comm_reply; +struct alloc_cache; +struct iovec; +struct regional; +struct edns_data; +struct msg_parse; +struct rrset_parse; + +/** calculate the prefetch TTL as 90% of original. Calculation + * without numerical overflow (uin32_t) */ +#define PREFETCH_TTL_CALC(ttl) ((ttl) - (ttl)/10) + +/** + * Structure to store query information that makes answers to queries + * different. + */ +struct query_info { + /** + * Salient data on the query: qname, in wireformat. + * can be allocated or a pointer to outside buffer. + * User has to keep track on the status of this. + */ + uint8_t* qname; + /** length of qname (including last 0 octet) */ + size_t qname_len; + /** qtype, host byte order */ + uint16_t qtype; + /** qclass, host byte order */ + uint16_t qclass; +}; + +/** + * Information to reference an rrset + */ +struct rrset_ref { + /** the key with lock, and ptr to packed data. */ + struct ub_packed_rrset_key* key; + /** id needed */ + rrset_id_t id; +}; + +/** + * Structure to store DNS query and the reply packet. + * To use it, copy over the flags from reply and modify using flags from + * the query (RD,CD if not AA). prepend ID. + * + * Memory layout is: + * o struct + * o rrset_ref array + * o packed_rrset_key* array. + * + * Memory layout is sometimes not packed, when the message is synthesized, + * for easy of the generation. It is allocated packed when it is copied + * from the region allocation to the malloc allocation. + */ +struct reply_info { + /** the flags for the answer, host byte order. */ + uint16_t flags; + + /** + * This flag informs unbound the answer is authoritative and + * the AA flag should be preserved. + */ + uint8_t authoritative; + + /** + * Number of RRs in the query section. + * If qdcount is not 0, then it is 1, and the data that appears + * in the reply is the same as the query_info. + * Host byte order. + */ + uint8_t qdcount; + + /** 32 bit padding to pad struct member alignment to 64 bits. */ + uint32_t padding; + + /** + * TTL of the entire reply (for negative caching). + * only for use when there are 0 RRsets in this message. + * if there are RRsets, check those instead. + */ + time_t ttl; + + /** + * TTL for prefetch. After it has expired, a prefetch is suitable. + * Smaller than the TTL, otherwise the prefetch would not happen. + */ + time_t prefetch_ttl; + + /** + * The security status from DNSSEC validation of this message. + */ + enum sec_status security; + + /** + * Number of RRsets in each section. + * The answer section. Add up the RRs in every RRset to calculate + * the number of RRs, and the count for the dns packet. + * The number of RRs in RRsets can change due to RRset updates. + */ + size_t an_numrrsets; + + /** Count of authority section RRsets */ + size_t ns_numrrsets; + /** Count of additional section RRsets */ + size_t ar_numrrsets; + + /** number of RRsets: an_numrrsets + ns_numrrsets + ar_numrrsets */ + size_t rrset_count; + + /** + * List of pointers (only) to the rrsets in the order in which + * they appear in the reply message. + * Number of elements is ancount+nscount+arcount RRsets. + * This is a pointer to that array. + * Use the accessor function for access. + */ + struct ub_packed_rrset_key** rrsets; + + /** + * Packed array of ids (see counts) and pointers to packed_rrset_key. + * The number equals ancount+nscount+arcount RRsets. + * These are sorted in ascending pointer, the locking order. So + * this list can be locked (and id, ttl checked), to see if + * all the data is available and recent enough. + * + * This is defined as an array of size 1, so that the compiler + * associates the identifier with this position in the structure. + * Array bound overflow on this array then gives access to the further + * elements of the array, which are allocated after the main structure. + * + * It could be more pure to define as array of size 0, ref[0]. + * But ref[1] may be less confusing for compilers. + * Use the accessor function for access. + */ + struct rrset_ref ref[1]; +}; + +/** + * Structure to keep hash table entry for message replies. + */ +struct msgreply_entry { + /** the hash table key */ + struct query_info key; + /** the hash table entry, data is struct reply_info* */ + struct lruhash_entry entry; +}; + +/** + * Constructor for replyinfo. + * @param region: where to allocate the results, pass NULL to use malloc. + * @param flags: flags for the replyinfo. + * @param qd: qd count + * @param ttl: TTL of replyinfo + * @param prettl: prefetch ttl + * @param an: an count + * @param ns: ns count + * @param ar: ar count + * @param total: total rrset count (presumably an+ns+ar). + * @param sec: security status of the reply info. + * @return the reply_info base struct with the array for putting the rrsets + * in. The array has been zeroed. Returns NULL on malloc failure. + */ +struct reply_info* +construct_reply_info_base(struct regional* region, uint16_t flags, size_t qd, + time_t ttl, time_t prettl, size_t an, size_t ns, size_t ar, + size_t total, enum sec_status sec); + +/** + * Parse wire query into a queryinfo structure, return 0 on parse error. + * initialises the (prealloced) queryinfo structure as well. + * This query structure contains a pointer back info the buffer! + * This pointer avoids memory allocation. allocqname does memory allocation. + * @param m: the prealloced queryinfo structure to put query into. + * must be unused, or _clear()ed. + * @param query: the wireformat packet query. starts with ID. + * @return: 0 on format error. + */ +int query_info_parse(struct query_info* m, struct sldns_buffer* query); + +/** + * Parse query reply. + * Fills in preallocated query_info structure (with ptr into buffer). + * Allocates reply_info and packed_rrsets. These are not yet added to any + * caches or anything, this is only parsing. Returns formerror on qdcount > 1. + * @param pkt: the packet buffer. Must be positioned after the query section. + * @param alloc: creates packed rrset key structures. + * @param rep: allocated reply_info is returned (only on no error). + * @param qinf: query_info is returned (only on no error). + * @param region: where to store temporary data (for parsing). + * @param edns: where to store edns information, does not need to be inited. + * @return: zero is OK, or DNS error code in case of error + * o FORMERR for parse errors. + * o SERVFAIL for memory allocation errors. + */ +int reply_info_parse(struct sldns_buffer* pkt, struct alloc_cache* alloc, + struct query_info* qinf, struct reply_info** rep, + struct regional* region, struct edns_data* edns); + +/** + * Allocate and decompress parsed message and rrsets. + * @param pkt: for name decompression. + * @param msg: parsed message in scratch region. + * @param alloc: alloc cache for special rrset key structures. + * Not used if region!=NULL, it can be NULL in that case. + * @param qinf: where to store query info. + * qinf itself is allocated by the caller. + * @param rep: reply info is allocated and returned. + * @param region: if this parameter is NULL then malloc and the alloc is used. + * otherwise, everything is allocated in this region. + * In a region, no special rrset key structures are needed (not shared), + * and no rrset_ref array in the reply is built up. + * @return 0 if allocation failed. + */ +int parse_create_msg(struct sldns_buffer* pkt, struct msg_parse* msg, + struct alloc_cache* alloc, struct query_info* qinf, + struct reply_info** rep, struct regional* region); + +/** + * Sorts the ref array. + * @param rep: reply info. rrsets must be filled in. + */ +void reply_info_sortref(struct reply_info* rep); + +/** + * Set TTLs inside the replyinfo to absolute values. + * @param rep: reply info. rrsets must be filled in. + * Also refs must be filled in. + * @param timenow: the current time. + */ +void reply_info_set_ttls(struct reply_info* rep, time_t timenow); + +/** + * Delete reply_info and packed_rrsets (while they are not yet added to the + * hashtables.). Returns rrsets to the alloc cache. + * @param rep: reply_info to delete. + * @param alloc: where to return rrset structures to. + */ +void reply_info_parsedelete(struct reply_info* rep, struct alloc_cache* alloc); + +/** + * Compare two queryinfo structures, on query and type, class. + * It is _not_ sorted in canonical ordering. + * @param m1: struct query_info* , void* here to ease use as function pointer. + * @param m2: struct query_info* , void* here to ease use as function pointer. + * @return: 0 = same, -1 m1 is smaller, +1 m1 is larger. + */ +int query_info_compare(void* m1, void* m2); + +/** clear out query info structure */ +void query_info_clear(struct query_info* m); + +/** calculate size of struct query_info + reply_info */ +size_t msgreply_sizefunc(void* k, void* d); + +/** delete msgreply_entry key structure */ +void query_entry_delete(void *q, void* arg); + +/** delete reply_info data structure */ +void reply_info_delete(void* d, void* arg); + +/** calculate hash value of query_info, lowercases the qname */ +hashvalue_t query_info_hash(struct query_info *q); + +/** + * Setup query info entry + * @param q: query info to copy. Emptied as if clear is called. + * @param r: reply to init data. + * @param h: hash value. + * @return: newly allocated message reply cache item. + */ +struct msgreply_entry* query_info_entrysetup(struct query_info* q, + struct reply_info* r, hashvalue_t h); + +/** + * Copy reply_info and all rrsets in it and allocate. + * @param rep: what to copy, probably inside region, no ref[] array in it. + * @param alloc: how to allocate rrset keys. + * Not used if region!=NULL, it can be NULL in that case. + * @param region: if this parameter is NULL then malloc and the alloc is used. + * otherwise, everything is allocated in this region. + * In a region, no special rrset key structures are needed (not shared), + * and no rrset_ref array in the reply is built up. + * @return new reply info or NULL on memory error. + */ +struct reply_info* reply_info_copy(struct reply_info* rep, + struct alloc_cache* alloc, struct regional* region); + +/** + * Copy a parsed rrset into given key, decompressing and allocating rdata. + * @param pkt: packet for decompression + * @param msg: the parser message (for flags for trust). + * @param pset: the parsed rrset to copy. + * @param region: if NULL - malloc, else data is allocated in this region. + * @param pk: a freshly obtained rrsetkey structure. No dname is set yet, + * will be set on return. + * Note that TTL will still be relative on return. + * @return false on alloc failure. + */ +int parse_copy_decompress_rrset(struct sldns_buffer* pkt, struct msg_parse* msg, + struct rrset_parse *pset, struct regional* region, + struct ub_packed_rrset_key* pk); + +/** + * Find final cname target in reply, the one matching qinfo. Follows CNAMEs. + * @param qinfo: what to start with. + * @param rep: looks in answer section of this message. + * @return: pointer dname, or NULL if not found. + */ +uint8_t* reply_find_final_cname_target(struct query_info* qinfo, + struct reply_info* rep); + +/** + * Check if cname chain in cached reply is still valid. + * @param rep: reply to check. + * @return: true if valid, false if invalid. + */ +int reply_check_cname_chain(struct reply_info* rep); + +/** + * Check security status of all RRs in the message. + * @param rep: reply to check + * @return: true if all RRs are secure. False if not. + * True if there are zero RRs. + */ +int reply_all_rrsets_secure(struct reply_info* rep); + +/** + * Find answer rrset in reply, the one matching qinfo. Follows CNAMEs, so the + * result may have a different owner name. + * @param qinfo: what to look for. + * @param rep: looks in answer section of this message. + * @return: pointer to rrset, or NULL if not found. + */ +struct ub_packed_rrset_key* reply_find_answer_rrset(struct query_info* qinfo, + struct reply_info* rep); + +/** + * Find rrset in reply, inside the answer section. Does not follow CNAMEs. + * @param rep: looks in answer section of this message. + * @param name: what to look for. + * @param namelen: length of name. + * @param type: looks for (host order). + * @param dclass: looks for (host order). + * @return: pointer to rrset, or NULL if not found. + */ +struct ub_packed_rrset_key* reply_find_rrset_section_an(struct reply_info* rep, + uint8_t* name, size_t namelen, uint16_t type, uint16_t dclass); + +/** + * Find rrset in reply, inside the authority section. Does not follow CNAMEs. + * @param rep: looks in authority section of this message. + * @param name: what to look for. + * @param namelen: length of name. + * @param type: looks for (host order). + * @param dclass: looks for (host order). + * @return: pointer to rrset, or NULL if not found. + */ +struct ub_packed_rrset_key* reply_find_rrset_section_ns(struct reply_info* rep, + uint8_t* name, size_t namelen, uint16_t type, uint16_t dclass); + +/** + * Find rrset in reply, inside any section. Does not follow CNAMEs. + * @param rep: looks in answer,authority and additional section of this message. + * @param name: what to look for. + * @param namelen: length of name. + * @param type: looks for (host order). + * @param dclass: looks for (host order). + * @return: pointer to rrset, or NULL if not found. + */ +struct ub_packed_rrset_key* reply_find_rrset(struct reply_info* rep, + uint8_t* name, size_t namelen, uint16_t type, uint16_t dclass); + +/** + * Debug send the query info and reply info to the log in readable form. + * @param str: descriptive string printed with packet content. + * @param qinfo: query section. + * @param rep: rest of message. + */ +void log_dns_msg(const char* str, struct query_info* qinfo, + struct reply_info* rep); + +/** + * Print string with neat domain name, type, class from query info. + * @param v: at what verbosity level to print this. + * @param str: string of message. + * @param qinf: query info structure with name, type and class. + */ +void log_query_info(enum verbosity_value v, const char* str, + struct query_info* qinf); + +#endif /* UTIL_DATA_MSGREPLY_H */ diff --git a/external/unbound/util/data/packed_rrset.c b/external/unbound/util/data/packed_rrset.c new file mode 100644 index 000000000..807468576 --- /dev/null +++ b/external/unbound/util/data/packed_rrset.c @@ -0,0 +1,389 @@ +/* + * util/data/packed_rrset.c - data storage for a set of resource records. + * + * Copyright (c) 2007, NLnet Labs. All rights reserved. + * + * This software is open source. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * Neither the name of the NLNET LABS nor the names of its contributors may + * be used to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/** + * \file + * + * This file contains the data storage for RRsets. + */ + +#include "config.h" +#include "util/data/packed_rrset.h" +#include "util/data/dname.h" +#include "util/storage/lookup3.h" +#include "util/log.h" +#include "util/alloc.h" +#include "util/regional.h" +#include "util/net_help.h" +#include "ldns/rrdef.h" +#include "ldns/sbuffer.h" +#include "ldns/wire2str.h" + +void +ub_packed_rrset_parsedelete(struct ub_packed_rrset_key* pkey, + struct alloc_cache* alloc) +{ + if(!pkey) + return; + if(pkey->entry.data) + free(pkey->entry.data); + pkey->entry.data = NULL; + if(pkey->rk.dname) + free(pkey->rk.dname); + pkey->rk.dname = NULL; + pkey->id = 0; + alloc_special_release(alloc, pkey); +} + +size_t +ub_rrset_sizefunc(void* key, void* data) +{ + struct ub_packed_rrset_key* k = (struct ub_packed_rrset_key*)key; + struct packed_rrset_data* d = (struct packed_rrset_data*)data; + size_t s = sizeof(struct ub_packed_rrset_key) + k->rk.dname_len; + s += packed_rrset_sizeof(d) + lock_get_mem(&k->entry.lock); + return s; +} + +size_t +packed_rrset_sizeof(struct packed_rrset_data* d) +{ + size_t s; + if(d->rrsig_count > 0) { + s = ((uint8_t*)d->rr_data[d->count+d->rrsig_count-1] - + (uint8_t*)d) + d->rr_len[d->count+d->rrsig_count-1]; + } else { + log_assert(d->count > 0); + s = ((uint8_t*)d->rr_data[d->count-1] - (uint8_t*)d) + + d->rr_len[d->count-1]; + } + return s; +} + +int +ub_rrset_compare(void* k1, void* k2) +{ + struct ub_packed_rrset_key* key1 = (struct ub_packed_rrset_key*)k1; + struct ub_packed_rrset_key* key2 = (struct ub_packed_rrset_key*)k2; + int c; + if(key1 == key2) + return 0; + if(key1->rk.type != key2->rk.type) { + if(key1->rk.type < key2->rk.type) + return -1; + return 1; + } + if(key1->rk.dname_len != key2->rk.dname_len) { + if(key1->rk.dname_len < key2->rk.dname_len) + return -1; + return 1; + } + if((c=query_dname_compare(key1->rk.dname, key2->rk.dname)) != 0) + return c; + if(key1->rk.rrset_class != key2->rk.rrset_class) { + if(key1->rk.rrset_class < key2->rk.rrset_class) + return -1; + return 1; + } + if(key1->rk.flags != key2->rk.flags) { + if(key1->rk.flags < key2->rk.flags) + return -1; + return 1; + } + return 0; +} + +void +ub_rrset_key_delete(void* key, void* userdata) +{ + struct ub_packed_rrset_key* k = (struct ub_packed_rrset_key*)key; + struct alloc_cache* a = (struct alloc_cache*)userdata; + k->id = 0; + free(k->rk.dname); + k->rk.dname = NULL; + alloc_special_release(a, k); +} + +void +rrset_data_delete(void* data, void* ATTR_UNUSED(userdata)) +{ + struct packed_rrset_data* d = (struct packed_rrset_data*)data; + free(d); +} + +int +rrsetdata_equal(struct packed_rrset_data* d1, struct packed_rrset_data* d2) +{ + size_t i; + size_t total; + if(d1->count != d2->count || d1->rrsig_count != d2->rrsig_count) + return 0; + total = d1->count + d1->rrsig_count; + for(i=0; i<total; i++) { + if(d1->rr_len[i] != d2->rr_len[i]) + return 0; + if(memcmp(d1->rr_data[i], d2->rr_data[i], d1->rr_len[i]) != 0) + return 0; + } + return 1; +} + +hashvalue_t +rrset_key_hash(struct packed_rrset_key* key) +{ + /* type is hashed in host order */ + uint16_t t = ntohs(key->type); + /* Note this MUST be identical to pkt_hash_rrset in msgparse.c */ + /* this routine does not have a compressed name */ + hashvalue_t h = 0xab; + h = dname_query_hash(key->dname, h); + h = hashlittle(&t, sizeof(t), h); + h = hashlittle(&key->rrset_class, sizeof(uint16_t), h); + h = hashlittle(&key->flags, sizeof(uint32_t), h); + return h; +} + +void +packed_rrset_ptr_fixup(struct packed_rrset_data* data) +{ + size_t i; + size_t total = data->count + data->rrsig_count; + uint8_t* nextrdata; + /* fixup pointers in packed rrset data */ + data->rr_len = (size_t*)((uint8_t*)data + + sizeof(struct packed_rrset_data)); + data->rr_data = (uint8_t**)&(data->rr_len[total]); + data->rr_ttl = (time_t*)&(data->rr_data[total]); + nextrdata = (uint8_t*)&(data->rr_ttl[total]); + for(i=0; i<total; i++) { + data->rr_data[i] = nextrdata; + nextrdata += data->rr_len[i]; + } +} + +void +get_cname_target(struct ub_packed_rrset_key* rrset, uint8_t** dname, + size_t* dname_len) +{ + struct packed_rrset_data* d; + size_t len; + if(ntohs(rrset->rk.type) != LDNS_RR_TYPE_CNAME && + ntohs(rrset->rk.type) != LDNS_RR_TYPE_DNAME) + return; + d = (struct packed_rrset_data*)rrset->entry.data; + if(d->count < 1) + return; + if(d->rr_len[0] < 3) /* at least rdatalen + 0byte root label */ + return; + len = sldns_read_uint16(d->rr_data[0]); + if(len != d->rr_len[0] - sizeof(uint16_t)) + return; + if(dname_valid(d->rr_data[0]+sizeof(uint16_t), len) != len) + return; + *dname = d->rr_data[0]+sizeof(uint16_t); + *dname_len = len; +} + +void +packed_rrset_ttl_add(struct packed_rrset_data* data, time_t add) +{ + size_t i; + size_t total = data->count + data->rrsig_count; + data->ttl += add; + for(i=0; i<total; i++) + data->rr_ttl[i] += add; +} + +const char* +rrset_trust_to_string(enum rrset_trust s) +{ + switch(s) { + case rrset_trust_none: return "rrset_trust_none"; + case rrset_trust_add_noAA: return "rrset_trust_add_noAA"; + case rrset_trust_auth_noAA: return "rrset_trust_auth_noAA"; + case rrset_trust_add_AA: return "rrset_trust_add_AA"; + case rrset_trust_nonauth_ans_AA:return "rrset_trust_nonauth_ans_AA"; + case rrset_trust_ans_noAA: return "rrset_trust_ans_noAA"; + case rrset_trust_glue: return "rrset_trust_glue"; + case rrset_trust_auth_AA: return "rrset_trust_auth_AA"; + case rrset_trust_ans_AA: return "rrset_trust_ans_AA"; + case rrset_trust_sec_noglue: return "rrset_trust_sec_noglue"; + case rrset_trust_prim_noglue: return "rrset_trust_prim_noglue"; + case rrset_trust_validated: return "rrset_trust_validated"; + case rrset_trust_ultimate: return "rrset_trust_ultimate"; + } + return "unknown_rrset_trust_value"; +} + +const char* +sec_status_to_string(enum sec_status s) +{ + switch(s) { + case sec_status_unchecked: return "sec_status_unchecked"; + case sec_status_bogus: return "sec_status_bogus"; + case sec_status_indeterminate: return "sec_status_indeterminate"; + case sec_status_insecure: return "sec_status_insecure"; + case sec_status_secure: return "sec_status_secure"; + } + return "unknown_sec_status_value"; +} + +void log_rrset_key(enum verbosity_value v, const char* str, + struct ub_packed_rrset_key* rrset) +{ + if(verbosity >= v) + log_nametypeclass(v, str, rrset->rk.dname, + ntohs(rrset->rk.type), ntohs(rrset->rk.rrset_class)); +} + +int packed_rr_to_string(struct ub_packed_rrset_key* rrset, size_t i, + time_t now, char* dest, size_t dest_len) +{ + struct packed_rrset_data* d = (struct packed_rrset_data*)rrset-> + entry.data; + uint8_t rr[65535]; + size_t rlen = rrset->rk.dname_len + 2 + 2 + 4 + d->rr_len[i]; + log_assert(dest_len > 0 && dest); + if(rlen > dest_len) { + dest[0] = 0; + return 0; + } + memmove(rr, rrset->rk.dname, rrset->rk.dname_len); + if(i < d->count) + memmove(rr+rrset->rk.dname_len, &rrset->rk.type, 2); + else sldns_write_uint16(rr+rrset->rk.dname_len, LDNS_RR_TYPE_RRSIG); + memmove(rr+rrset->rk.dname_len+2, &rrset->rk.rrset_class, 2); + sldns_write_uint32(rr+rrset->rk.dname_len+4, + (uint32_t)(d->rr_ttl[i]-now)); + memmove(rr+rrset->rk.dname_len+8, d->rr_data[i], d->rr_len[i]); + if(sldns_wire2str_rr_buf(rr, rlen, dest, dest_len) == -1) { + log_info("rrbuf failure %d %s", (int)d->rr_len[i], dest); + dest[0] = 0; + return 0; + } + return 1; +} + +void log_packed_rrset(enum verbosity_value v, const char* str, + struct ub_packed_rrset_key* rrset) +{ + struct packed_rrset_data* d = (struct packed_rrset_data*)rrset-> + entry.data; + char buf[65535]; + size_t i; + if(verbosity < v) + return; + for(i=0; i<d->count+d->rrsig_count; i++) { + if(!packed_rr_to_string(rrset, i, 0, buf, sizeof(buf))) { + log_info("%s: rr %d wire2str-error", str, (int)i); + } else { + log_info("%s: %s", str, buf); + } + } +} + +time_t +ub_packed_rrset_ttl(struct ub_packed_rrset_key* key) +{ + struct packed_rrset_data* d = (struct packed_rrset_data*)key-> + entry.data; + return d->ttl; +} + +struct ub_packed_rrset_key* +packed_rrset_copy_region(struct ub_packed_rrset_key* key, + struct regional* region, time_t now) +{ + struct ub_packed_rrset_key* ck = regional_alloc(region, + sizeof(struct ub_packed_rrset_key)); + struct packed_rrset_data* d; + struct packed_rrset_data* data = (struct packed_rrset_data*) + key->entry.data; + size_t dsize, i; + if(!ck) + return NULL; + ck->id = key->id; + memset(&ck->entry, 0, sizeof(ck->entry)); + ck->entry.hash = key->entry.hash; + ck->entry.key = ck; + ck->rk = key->rk; + ck->rk.dname = regional_alloc_init(region, key->rk.dname, + key->rk.dname_len); + if(!ck->rk.dname) + return NULL; + dsize = packed_rrset_sizeof(data); + d = (struct packed_rrset_data*)regional_alloc_init(region, data, dsize); + if(!d) + return NULL; + ck->entry.data = d; + packed_rrset_ptr_fixup(d); + /* make TTLs relative - once per rrset */ + for(i=0; i<d->count + d->rrsig_count; i++) { + if(d->rr_ttl[i] < now) + d->rr_ttl[i] = 0; + else d->rr_ttl[i] -= now; + } + if(d->ttl < now) + d->ttl = 0; + else d->ttl -= now; + return ck; +} + +struct ub_packed_rrset_key* +packed_rrset_copy_alloc(struct ub_packed_rrset_key* key, + struct alloc_cache* alloc, time_t now) +{ + struct packed_rrset_data* fd, *dd; + struct ub_packed_rrset_key* dk = alloc_special_obtain(alloc); + if(!dk) return NULL; + fd = (struct packed_rrset_data*)key->entry.data; + dk->entry.hash = key->entry.hash; + dk->rk = key->rk; + dk->rk.dname = (uint8_t*)memdup(key->rk.dname, key->rk.dname_len); + if(!dk->rk.dname) { + alloc_special_release(alloc, dk); + return NULL; + } + dd = (struct packed_rrset_data*)memdup(fd, packed_rrset_sizeof(fd)); + if(!dd) { + free(dk->rk.dname); + alloc_special_release(alloc, dk); + return NULL; + } + packed_rrset_ptr_fixup(dd); + dk->entry.data = (void*)dd; + packed_rrset_ttl_add(dd, now); + return dk; +} diff --git a/external/unbound/util/data/packed_rrset.h b/external/unbound/util/data/packed_rrset.h new file mode 100644 index 000000000..5d7990a2b --- /dev/null +++ b/external/unbound/util/data/packed_rrset.h @@ -0,0 +1,428 @@ +/* + * util/data/packed_rrset.h - data storage for a set of resource records. + * + * Copyright (c) 2007, NLnet Labs. All rights reserved. + * + * This software is open source. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * Neither the name of the NLNET LABS nor the names of its contributors may + * be used to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/** + * \file + * + * This file contains the data storage for RRsets. + */ + +#ifndef UTIL_DATA_PACKED_RRSET_H +#define UTIL_DATA_PACKED_RRSET_H +#include "util/storage/lruhash.h" +struct alloc_cache; +struct regional; + +/** type used to uniquely identify rrsets. Cannot be reused without + * clearing the cache. */ +typedef uint64_t rrset_id_t; + +/** this rrset is NSEC and is at zone apex (at child side of zonecut) */ +#define PACKED_RRSET_NSEC_AT_APEX 0x1 +/** this rrset is A/AAAA and is in-zone-glue (from parent side of zonecut) */ +#define PACKED_RRSET_PARENT_SIDE 0x2 +/** this rrset is SOA and has the negative ttl (from nxdomain or nodata), + * this is set on SOA rrsets in the authority section, to keep its TTL separate + * from the SOA in the answer section from a direct SOA query or ANY query. */ +#define PACKED_RRSET_SOA_NEG 0x4 + +/** + * The identifying information for an RRset. + */ +struct packed_rrset_key { + /** + * The domain name. If not null (for id=0) it is allocated, and + * contains the wireformat domain name. + * This dname is not canonicalized. + */ + uint8_t* dname; + /** + * Length of the domain name, including last 0 root octet. + */ + size_t dname_len; + /** + * Flags. 32bit to be easy for hashing: + * o PACKED_RRSET_NSEC_AT_APEX + * o PACKED_RRSET_PARENT_SIDE + * o PACKED_RRSET_SOA_NEG + */ + uint32_t flags; + /** the rrset type in network format */ + uint16_t type; + /** the rrset class in network format */ + uint16_t rrset_class; +}; + +/** + * This structure contains an RRset. A set of resource records that + * share the same domain name, type and class. + * + * Due to memory management and threading, the key structure cannot be + * deleted, although the data can be. The id can be set to 0 to store and the + * structure can be recycled with a new id. + */ +struct ub_packed_rrset_key { + /** + * entry into hashtable. Note the lock is never destroyed, + * even when this key is retired to the cache. + * the data pointer (if not null) points to a struct packed_rrset. + */ + struct lruhash_entry entry; + /** + * the ID of this rrset. unique, based on threadid + sequenceno. + * ids are not reused, except after flushing the cache. + * zero is an unused entry, and never a valid id. + * Check this value after getting entry.lock. + * The other values in this struct may only be altered after changing + * the id (which needs a writelock on entry.lock). + */ + rrset_id_t id; + /** key data: dname, type and class */ + struct packed_rrset_key rk; +}; + +/** + * RRset trustworthiness. Bigger value is more trust. RFC 2181. + * The rrset_trust_add_noAA, rrset_trust_auth_noAA, rrset_trust_add_AA, + * are mentioned as the same trustworthiness in 2181, but split up here + * for ease of processing. + * + * rrset_trust_nonauth_ans_AA, rrset_trust_ans_noAA + * are also mentioned as the same trustworthiness in 2181, but split up here + * for ease of processing. + * + * Added trust_none for a sane initial value, smaller than anything else. + * Added validated and ultimate trust for keys and rrsig validated content. + */ +enum rrset_trust { + /** initial value for trust */ + rrset_trust_none = 0, + /** Additional information from non-authoritative answers */ + rrset_trust_add_noAA, + /** Data from the authority section of a non-authoritative answer */ + rrset_trust_auth_noAA, + /** Additional information from an authoritative answer */ + rrset_trust_add_AA, + /** non-authoritative data from the answer section of authoritative + * answers */ + rrset_trust_nonauth_ans_AA, + /** Data from the answer section of a non-authoritative answer */ + rrset_trust_ans_noAA, + /** Glue from a primary zone, or glue from a zone transfer */ + rrset_trust_glue, + /** Data from the authority section of an authoritative answer */ + rrset_trust_auth_AA, + /** The authoritative data included in the answer section of an + * authoritative reply */ + rrset_trust_ans_AA, + /** Data from a zone transfer, other than glue */ + rrset_trust_sec_noglue, + /** Data from a primary zone file, other than glue data */ + rrset_trust_prim_noglue, + /** DNSSEC(rfc4034) validated with trusted keys */ + rrset_trust_validated, + /** ultimately trusted, no more trust is possible; + * trusted keys from the unbound configuration setup. */ + rrset_trust_ultimate +}; + +/** + * Security status from validation for data. + * The order is significant; more secure, more proven later. + */ +enum sec_status { + /** UNCHECKED means that object has yet to be validated. */ + sec_status_unchecked = 0, + /** BOGUS means that the object (RRset or message) failed to validate + * (according to local policy), but should have validated. */ + sec_status_bogus, + /** INDETERMINATE means that the object is insecure, but not + * authoritatively so. Generally this means that the RRset is not + * below a configured trust anchor. */ + sec_status_indeterminate, + /** INSECURE means that the object is authoritatively known to be + * insecure. Generally this means that this RRset is below a trust + * anchor, but also below a verified, insecure delegation. */ + sec_status_insecure, + /** SECURE means that the object (RRset or message) validated + * according to local policy. */ + sec_status_secure +}; + +/** + * RRset data. + * + * The data is packed, stored contiguously in memory. + * memory layout: + * o base struct + * o rr_len size_t array + * o rr_data uint8_t* array + * o rr_ttl time_t array (after size_t and ptrs because those may be + * 64bit and this array before those would make them unaligned). + * Since the stuff before is 32/64bit, rr_ttl is 32 bit aligned. + * o rr_data rdata wireformats + * o rrsig_data rdata wireformat(s) + * + * Rdata is stored in wireformat. The dname is stored in wireformat. + * TTLs are stored as absolute values (and could be expired). + * + * RRSIGs are stored in the arrays after the regular rrs. + * + * You need the packed_rrset_key to know dname, type, class of the + * resource records in this RRset. (if signed the rrsig gives the type too). + * + * On the wire an RR is: + * name, type, class, ttl, rdlength, rdata. + * So we need to send the following per RR: + * key.dname, ttl, rr_data[i]. + * since key.dname ends with type and class. + * and rr_data starts with the rdlength. + * the ttl value to send changes due to time. + */ +struct packed_rrset_data { + /** TTL (in seconds like time()) of the rrset. + * Same for all RRs see rfc2181(5.2). */ + time_t ttl; + /** number of rrs. */ + size_t count; + /** number of rrsigs, if 0 no rrsigs */ + size_t rrsig_count; + /** the trustworthiness of the rrset data */ + enum rrset_trust trust; + /** security status of the rrset data */ + enum sec_status security; + /** length of every rr's rdata, rr_len[i] is size of rr_data[i]. */ + size_t* rr_len; + /** ttl of every rr. rr_ttl[i] ttl of rr i. */ + time_t *rr_ttl; + /** + * Array of pointers to every rr's rdata. + * The rr_data[i] rdata is stored in uncompressed wireformat. + * The first uint16_t of rr_data[i] is network format rdlength. + * + * rr_data[count] to rr_data[count+rrsig_count] contain the rrsig data. + */ + uint8_t** rr_data; +}; + +/** + * An RRset can be represented using both key and data together. + * Split into key and data structures to simplify implementation of + * caching schemes. + */ +struct packed_rrset { + /** domain name, type and class */ + struct packed_rrset_key* k; + /** ttl, count and rdatas (and rrsig) */ + struct packed_rrset_data* d; +}; + +/** + * list of packed rrsets + */ +struct packed_rrset_list { + /** next in list */ + struct packed_rrset_list* next; + /** rrset key and data */ + struct packed_rrset rrset; +}; + +/** + * Delete packed rrset key and data, not entered in hashtables yet. + * Used during parsing. + * @param pkey: rrset key structure with locks, key and data pointers. + * @param alloc: where to return the unfree-able key structure. + */ +void ub_packed_rrset_parsedelete(struct ub_packed_rrset_key* pkey, + struct alloc_cache* alloc); + +/** + * Memory size of rrset data. RRset data must be filled in correctly. + * @param data: data to examine. + * @return size in bytes. + */ +size_t packed_rrset_sizeof(struct packed_rrset_data* data); + +/** + * Get TTL of rrset. RRset data must be filled in correctly. + * @param key: rrset key, with data to examine. + * @return ttl value. + */ +time_t ub_packed_rrset_ttl(struct ub_packed_rrset_key* key); + +/** + * Calculate memory size of rrset entry. For hash table usage. + * @param key: struct ub_packed_rrset_key*. + * @param data: struct packed_rrset_data*. + * @return size in bytes. + */ +size_t ub_rrset_sizefunc(void* key, void* data); + +/** + * compares two rrset keys. + * @param k1: struct ub_packed_rrset_key*. + * @param k2: struct ub_packed_rrset_key*. + * @return 0 if equal. + */ +int ub_rrset_compare(void* k1, void* k2); + +/** + * compare two rrset data structures. + * Compared rdata and rrsigdata, not the trust or ttl value. + * @param d1: data to compare. + * @param d2: data to compare. + * @return 1 if equal. + */ +int rrsetdata_equal(struct packed_rrset_data* d1, struct packed_rrset_data* d2); + +/** + * Old key to be deleted. RRset keys are recycled via alloc. + * The id is set to 0. So that other threads, after acquiring a lock always + * get the correct value, in this case the 0 deleted-special value. + * @param key: struct ub_packed_rrset_key*. + * @param userdata: alloc structure to use for recycling. + */ +void ub_rrset_key_delete(void* key, void* userdata); + +/** + * Old data to be deleted. + * @param data: what to delete. + * @param userdata: user data ptr. + */ +void rrset_data_delete(void* data, void* userdata); + +/** + * Calculate hash value for a packed rrset key. + * @param key: the rrset key with name, type, class, flags. + * @return hash value. + */ +hashvalue_t rrset_key_hash(struct packed_rrset_key* key); + +/** + * Fixup pointers in fixed data packed_rrset_data blob. + * After a memcpy of the data for example. Will set internal pointers right. + * @param data: rrset data structure. Otherwise correctly filled in. + */ +void packed_rrset_ptr_fixup(struct packed_rrset_data* data); + +/** + * Fixup TTLs in fixed data packed_rrset_data blob. + * @param data: rrset data structure. Otherwise correctly filled in. + * @param add: how many seconds to add, pass time(0) for example. + */ +void packed_rrset_ttl_add(struct packed_rrset_data* data, time_t add); + +/** + * Utility procedure to extract CNAME target name from its rdata. + * Failsafes; it will change passed dname to a valid dname or do nothing. + * @param rrset: the rrset structure. Must be a CNAME. + * Only first RR is used (multiple RRs are technically illegal anyway). + * Also works on type DNAME. Returns target name. + * @param dname: this pointer is updated to point into the cname rdata. + * If a failsafe fails, nothing happens to the pointer (such as the + * rdata was not a valid dname, not a CNAME, ...). + * @param dname_len: length of dname is returned. + */ +void get_cname_target(struct ub_packed_rrset_key* rrset, uint8_t** dname, + size_t* dname_len); + +/** + * Get a printable string for a rrset trust value + * @param s: rrset trust value + * @return printable string. + */ +const char* rrset_trust_to_string(enum rrset_trust s); + +/** + * Get a printable string for a security status value + * @param s: security status + * @return printable string. + */ +const char* sec_status_to_string(enum sec_status s); + +/** + * Print string with neat domain name, type, class from rrset. + * @param v: at what verbosity level to print this. + * @param str: string of message. + * @param rrset: structure with name, type and class. + */ +void log_rrset_key(enum verbosity_value v, const char* str, + struct ub_packed_rrset_key* rrset); + +/** + * Convert RR from RRset to string. + * @param rrset: structure with data. + * @param i: index of rr or RRSIG. + * @param now: time that is subtracted from ttl before printout. Can be 0. + * @param dest: destination string buffer. Must be nonNULL. + * @param dest_len: length of dest buffer (>0). + * @return false on failure. + */ +int packed_rr_to_string(struct ub_packed_rrset_key* rrset, size_t i, + time_t now, char* dest, size_t dest_len); + +/** + * Print the string with prefix, one rr per line. + * @param v: at what verbosity level to print this. + * @param str: string of message. + * @param rrset: with name, and rdata, and rrsigs. + */ +void log_packed_rrset(enum verbosity_value v, const char* str, + struct ub_packed_rrset_key* rrset); + +/** + * Allocate rrset in region - no more locks needed + * @param key: a (just from rrset cache looked up) rrset key + valid, + * packed data record. + * @param region: where to alloc the copy + * @param now: adjust the TTLs to be relative (subtract from all TTLs). + * @return new region-alloced rrset key or NULL on alloc failure. + */ +struct ub_packed_rrset_key* packed_rrset_copy_region( + struct ub_packed_rrset_key* key, struct regional* region, + time_t now); + +/** + * Allocate rrset with malloc (from region or you are holding the lock). + * @param key: key with data entry. + * @param alloc: alloc_cache to create rrset_keys + * @param now: adjust the TTLs to be absolute (add to all TTLs). + * @return new region-alloced rrset key or NULL on alloc failure. + */ +struct ub_packed_rrset_key* packed_rrset_copy_alloc( + struct ub_packed_rrset_key* key, struct alloc_cache* alloc, + time_t now); + +#endif /* UTIL_DATA_PACKED_RRSET_H */ diff --git a/external/unbound/util/fptr_wlist.c b/external/unbound/util/fptr_wlist.c new file mode 100644 index 000000000..3a5fc5f06 --- /dev/null +++ b/external/unbound/util/fptr_wlist.c @@ -0,0 +1,409 @@ +/* + * util/fptr_wlist.c - function pointer whitelists. + * + * Copyright (c) 2007, NLnet Labs. All rights reserved. + * + * This software is open source. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * Neither the name of the NLNET LABS nor the names of its contributors may + * be used to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/** + * \file + * + * This file contains functions that check function pointers. + * The functions contain a whitelist of known good callback values. + * Any other values lead to an error. + * + * Due to the listing nature, this file violates all the modularization + * boundaries in the program. + */ +#include "config.h" +#include "util/fptr_wlist.h" +#include "util/mini_event.h" +#include "services/outside_network.h" +#include "services/mesh.h" +#include "services/localzone.h" +#include "services/cache/infra.h" +#include "services/cache/rrset.h" +#include "dns64/dns64.h" +#include "iterator/iterator.h" +#include "iterator/iter_fwd.h" +#include "validator/validator.h" +#include "validator/val_anchor.h" +#include "validator/val_nsec3.h" +#include "validator/val_sigcrypt.h" +#include "validator/val_kentry.h" +#include "validator/val_neg.h" +#include "validator/autotrust.h" +#include "util/data/msgreply.h" +#include "util/data/packed_rrset.h" +#include "util/storage/slabhash.h" +#include "util/storage/dnstree.h" +#include "util/locks.h" +#include "libunbound/libworker.h" +#include "libunbound/context.h" +#include "libunbound/worker.h" +#include "util/tube.h" +#include "util/config_file.h" +#ifdef UB_ON_WINDOWS +#include "winrc/win_svc.h" +#endif + +#ifdef WITH_PYTHONMODULE +#include "pythonmod/pythonmod.h" +#endif + +int +fptr_whitelist_comm_point(comm_point_callback_t *fptr) +{ + if(fptr == &worker_handle_request) return 1; + else if(fptr == &outnet_udp_cb) return 1; + else if(fptr == &outnet_tcp_cb) return 1; + else if(fptr == &tube_handle_listen) return 1; + return 0; +} + +int +fptr_whitelist_comm_point_raw(comm_point_callback_t *fptr) +{ + if(fptr == &tube_handle_listen) return 1; + else if(fptr == &tube_handle_write) return 1; + else if(fptr == &remote_accept_callback) return 1; + else if(fptr == &remote_control_callback) return 1; + return 0; +} + +int +fptr_whitelist_comm_timer(void (*fptr)(void*)) +{ + if(fptr == &pending_udp_timer_cb) return 1; + else if(fptr == &outnet_tcptimer) return 1; + else if(fptr == &pending_udp_timer_delay_cb) return 1; + else if(fptr == &worker_stat_timer_cb) return 1; + else if(fptr == &worker_probe_timer_cb) return 1; +#ifdef UB_ON_WINDOWS + else if(fptr == &wsvc_cron_cb) return 1; +#endif + return 0; +} + +int +fptr_whitelist_comm_signal(void (*fptr)(int, void*)) +{ + if(fptr == &worker_sighandler) return 1; + return 0; +} + +int fptr_whitelist_start_accept(void (*fptr)(void*)) +{ + if(fptr == &worker_start_accept) return 1; + return 0; +} + +int fptr_whitelist_stop_accept(void (*fptr)(void*)) +{ + if(fptr == &worker_stop_accept) return 1; + return 0; +} + +int +fptr_whitelist_event(void (*fptr)(int, short, void *)) +{ + if(fptr == &comm_point_udp_callback) return 1; + else if(fptr == &comm_point_udp_ancil_callback) return 1; + else if(fptr == &comm_point_tcp_accept_callback) return 1; + else if(fptr == &comm_point_tcp_handle_callback) return 1; + else if(fptr == &comm_timer_callback) return 1; + else if(fptr == &comm_signal_callback) return 1; + else if(fptr == &comm_point_local_handle_callback) return 1; + else if(fptr == &comm_point_raw_handle_callback) return 1; + else if(fptr == &tube_handle_signal) return 1; + else if(fptr == &comm_base_handle_slow_accept) return 1; +#ifdef UB_ON_WINDOWS + else if(fptr == &worker_win_stop_cb) return 1; +#endif + return 0; +} + +int +fptr_whitelist_pending_udp(comm_point_callback_t *fptr) +{ + if(fptr == &serviced_udp_callback) return 1; + else if(fptr == &worker_handle_reply) return 1; + else if(fptr == &libworker_handle_reply) return 1; + return 0; +} + +int +fptr_whitelist_pending_tcp(comm_point_callback_t *fptr) +{ + if(fptr == &serviced_tcp_callback) return 1; + else if(fptr == &worker_handle_reply) return 1; + else if(fptr == &libworker_handle_reply) return 1; + return 0; +} + +int +fptr_whitelist_serviced_query(comm_point_callback_t *fptr) +{ + if(fptr == &worker_handle_service_reply) return 1; + else if(fptr == &libworker_handle_service_reply) return 1; + return 0; +} + +int +fptr_whitelist_rbtree_cmp(int (*fptr) (const void *, const void *)) +{ + if(fptr == &mesh_state_compare) return 1; + else if(fptr == &mesh_state_ref_compare) return 1; + else if(fptr == &addr_tree_compare) return 1; + else if(fptr == &local_zone_cmp) return 1; + else if(fptr == &local_data_cmp) return 1; + else if(fptr == &fwd_cmp) return 1; + else if(fptr == &pending_cmp) return 1; + else if(fptr == &serviced_cmp) return 1; + else if(fptr == &name_tree_compare) return 1; + else if(fptr == &order_lock_cmp) return 1; + else if(fptr == &codeline_cmp) return 1; + else if(fptr == &nsec3_hash_cmp) return 1; + else if(fptr == &mini_ev_cmp) return 1; + else if(fptr == &anchor_cmp) return 1; + else if(fptr == &canonical_tree_compare) return 1; + else if(fptr == &context_query_cmp) return 1; + else if(fptr == &val_neg_data_compare) return 1; + else if(fptr == &val_neg_zone_compare) return 1; + else if(fptr == &probetree_cmp) return 1; + else if(fptr == &replay_var_compare) return 1; + return 0; +} + +int +fptr_whitelist_hash_sizefunc(lruhash_sizefunc_t fptr) +{ + if(fptr == &msgreply_sizefunc) return 1; + else if(fptr == &ub_rrset_sizefunc) return 1; + else if(fptr == &infra_sizefunc) return 1; + else if(fptr == &key_entry_sizefunc) return 1; + else if(fptr == &test_slabhash_sizefunc) return 1; + return 0; +} + +int +fptr_whitelist_hash_compfunc(lruhash_compfunc_t fptr) +{ + if(fptr == &query_info_compare) return 1; + else if(fptr == &ub_rrset_compare) return 1; + else if(fptr == &infra_compfunc) return 1; + else if(fptr == &key_entry_compfunc) return 1; + else if(fptr == &test_slabhash_compfunc) return 1; + return 0; +} + +int +fptr_whitelist_hash_delkeyfunc(lruhash_delkeyfunc_t fptr) +{ + if(fptr == &query_entry_delete) return 1; + else if(fptr == &ub_rrset_key_delete) return 1; + else if(fptr == &infra_delkeyfunc) return 1; + else if(fptr == &key_entry_delkeyfunc) return 1; + else if(fptr == &test_slabhash_delkey) return 1; + return 0; +} + +int +fptr_whitelist_hash_deldatafunc(lruhash_deldatafunc_t fptr) +{ + if(fptr == &reply_info_delete) return 1; + else if(fptr == &rrset_data_delete) return 1; + else if(fptr == &infra_deldatafunc) return 1; + else if(fptr == &key_entry_deldatafunc) return 1; + else if(fptr == &test_slabhash_deldata) return 1; + return 0; +} + +int +fptr_whitelist_hash_markdelfunc(lruhash_markdelfunc_t fptr) +{ + if(fptr == NULL) return 1; + else if(fptr == &rrset_markdel) return 1; + return 0; +} + +/** whitelist env->send_query callbacks */ +int +fptr_whitelist_modenv_send_query(struct outbound_entry* (*fptr)( + uint8_t* qname, size_t qnamelen, uint16_t qtype, uint16_t qclass, + uint16_t flags, int dnssec, int want_dnssec, int nocaps, + struct sockaddr_storage* addr, socklen_t addrlen, + uint8_t* zone, size_t zonelen, + struct module_qstate* q)) +{ + if(fptr == &worker_send_query) return 1; + else if(fptr == &libworker_send_query) return 1; + return 0; +} + +int +fptr_whitelist_modenv_detach_subs(void (*fptr)( + struct module_qstate* qstate)) +{ + if(fptr == &mesh_detach_subs) return 1; + return 0; +} + +int +fptr_whitelist_modenv_attach_sub(int (*fptr)( + struct module_qstate* qstate, struct query_info* qinfo, + uint16_t qflags, int prime, struct module_qstate** newq)) +{ + if(fptr == &mesh_attach_sub) return 1; + return 0; +} + +int +fptr_whitelist_modenv_kill_sub(void (*fptr)(struct module_qstate* newq)) +{ + if(fptr == &mesh_state_delete) return 1; + return 0; +} + +int +fptr_whitelist_modenv_detect_cycle(int (*fptr)( + struct module_qstate* qstate, struct query_info* qinfo, + uint16_t flags, int prime)) +{ + if(fptr == &mesh_detect_cycle) return 1; + return 0; +} + +int +fptr_whitelist_mod_init(int (*fptr)(struct module_env* env, int id)) +{ + if(fptr == &iter_init) return 1; + else if(fptr == &val_init) return 1; + else if(fptr == &dns64_init) return 1; +#ifdef WITH_PYTHONMODULE + else if(fptr == &pythonmod_init) return 1; +#endif + return 0; +} + +int +fptr_whitelist_mod_deinit(void (*fptr)(struct module_env* env, int id)) +{ + if(fptr == &iter_deinit) return 1; + else if(fptr == &val_deinit) return 1; + else if(fptr == &dns64_deinit) return 1; +#ifdef WITH_PYTHONMODULE + else if(fptr == &pythonmod_deinit) return 1; +#endif + return 0; +} + +int +fptr_whitelist_mod_operate(void (*fptr)(struct module_qstate* qstate, + enum module_ev event, int id, struct outbound_entry* outbound)) +{ + if(fptr == &iter_operate) return 1; + else if(fptr == &val_operate) return 1; + else if(fptr == &dns64_operate) return 1; +#ifdef WITH_PYTHONMODULE + else if(fptr == &pythonmod_operate) return 1; +#endif + return 0; +} + +int +fptr_whitelist_mod_inform_super(void (*fptr)( + struct module_qstate* qstate, int id, struct module_qstate* super)) +{ + if(fptr == &iter_inform_super) return 1; + else if(fptr == &val_inform_super) return 1; + else if(fptr == &dns64_inform_super) return 1; +#ifdef WITH_PYTHONMODULE + else if(fptr == &pythonmod_inform_super) return 1; +#endif + return 0; +} + +int +fptr_whitelist_mod_clear(void (*fptr)(struct module_qstate* qstate, + int id)) +{ + if(fptr == &iter_clear) return 1; + else if(fptr == &val_clear) return 1; + else if(fptr == &dns64_clear) return 1; +#ifdef WITH_PYTHONMODULE + else if(fptr == &pythonmod_clear) return 1; +#endif + return 0; +} + +int +fptr_whitelist_mod_get_mem(size_t (*fptr)(struct module_env* env, int id)) +{ + if(fptr == &iter_get_mem) return 1; + else if(fptr == &val_get_mem) return 1; + else if(fptr == &dns64_get_mem) return 1; +#ifdef WITH_PYTHONMODULE + else if(fptr == &pythonmod_get_mem) return 1; +#endif + return 0; +} + +int +fptr_whitelist_alloc_cleanup(void (*fptr)(void*)) +{ + if(fptr == &worker_alloc_cleanup) return 1; + return 0; +} + +int fptr_whitelist_tube_listen(tube_callback_t* fptr) +{ + if(fptr == &worker_handle_control_cmd) return 1; + else if(fptr == &libworker_handle_control_cmd) return 1; + return 0; +} + +int fptr_whitelist_mesh_cb(mesh_cb_func_t fptr) +{ + if(fptr == &libworker_fg_done_cb) return 1; + else if(fptr == &libworker_bg_done_cb) return 1; + else if(fptr == &libworker_event_done_cb) return 1; + else if(fptr == &probe_answer_cb) return 1; + return 0; +} + +int fptr_whitelist_print_func(void (*fptr)(char*,void*)) +{ + if(fptr == &config_print_func) return 1; + else if(fptr == &config_collate_func) return 1; + else if(fptr == &remote_get_opt_ssl) return 1; + return 0; +} diff --git a/external/unbound/util/fptr_wlist.h b/external/unbound/util/fptr_wlist.h new file mode 100644 index 000000000..62692ba8b --- /dev/null +++ b/external/unbound/util/fptr_wlist.h @@ -0,0 +1,359 @@ +/* + * util/fptr_wlist.h - function pointer whitelists. + * + * Copyright (c) 2007, NLnet Labs. All rights reserved. + * + * This software is open source. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * Neither the name of the NLNET LABS nor the names of its contributors may + * be used to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/** + * \file + * + * This file contains functions that check function pointers. + * The functions contain a whitelist of known good callback values. + * Any other values lead to an error. + * + * This prevent heap overflow based exploits, where the callback pointer + * is overwritten by a buffer overflow (apart from this defense, buffer + * overflows should be fixed of course). + * + * Function pointers are used in + * o network code callbacks. + * o rbtree, lruhash, region data manipulation + * in lruhash, the assertions are before the critical regions. + * in other places, assertions are before the callback. + * o module operations. + */ + +#ifndef UTIL_FPTR_WLIST_H +#define UTIL_FPTR_WLIST_H +#include "util/netevent.h" +#include "util/storage/lruhash.h" +#include "util/module.h" +#include "util/tube.h" +#include "services/mesh.h" + +/** + * Macro to perform an assertion check for fptr wlist checks. + * Does not get disabled in optimize mode. Check adds security by layers. + */ +#if defined(EXPORT_ALL_SYMBOLS) +#define fptr_ok(x) /* nothing, dll-exe memory layout on win disables it */ +#else +#define fptr_ok(x) \ + do { if(!(x)) \ + fatal_exit("%s:%d: %s: pointer whitelist %s failed", \ + __FILE__, __LINE__, __func__, #x); \ + } while(0); +#endif + +/** + * Check function pointer whitelist for comm_point callback values. + * + * @param fptr: function pointer to check. + * @return false if not in whitelist. + */ +int fptr_whitelist_comm_point(comm_point_callback_t *fptr); + +/** + * Check function pointer whitelist for raw comm_point callback values. + * + * @param fptr: function pointer to check. + * @return false if not in whitelist. + */ +int fptr_whitelist_comm_point_raw(comm_point_callback_t *fptr); + +/** + * Check function pointer whitelist for comm_timer callback values. + * + * @param fptr: function pointer to check. + * @return false if not in whitelist. + */ +int fptr_whitelist_comm_timer(void (*fptr)(void*)); + +/** + * Check function pointer whitelist for comm_signal callback values. + * + * @param fptr: function pointer to check. + * @return false if not in whitelist. + */ +int fptr_whitelist_comm_signal(void (*fptr)(int, void*)); + +/** + * Check function pointer whitelist for start_accept callback values. + * + * @param fptr: function pointer to check. + * @return false if not in whitelist. + */ +int fptr_whitelist_start_accept(void (*fptr)(void*)); + +/** + * Check function pointer whitelist for stop_accept callback values. + * + * @param fptr: function pointer to check. + * @return false if not in whitelist. + */ +int fptr_whitelist_stop_accept(void (*fptr)(void*)); + +/** + * Check function pointer whitelist for event structure callback values. + * This is not called by libevent itself, but checked by netevent. + * + * @param fptr: function pointer to check. + * @return false if not in whitelist. + */ +int fptr_whitelist_event(void (*fptr)(int, short, void *)); + +/** + * Check function pointer whitelist for pending udp callback values. + * + * @param fptr: function pointer to check. + * @return false if not in whitelist. + */ +int fptr_whitelist_pending_udp(comm_point_callback_t *fptr); + +/** + * Check function pointer whitelist for pending tcp callback values. + * + * @param fptr: function pointer to check. + * @return false if not in whitelist. + */ +int fptr_whitelist_pending_tcp(comm_point_callback_t *fptr); + +/** + * Check function pointer whitelist for serviced query callback values. + * + * @param fptr: function pointer to check. + * @return false if not in whitelist. + */ +int fptr_whitelist_serviced_query(comm_point_callback_t *fptr); + +/** + * Check function pointer whitelist for rbtree cmp callback values. + * + * @param fptr: function pointer to check. + * @return false if not in whitelist. + */ +int fptr_whitelist_rbtree_cmp(int (*fptr) (const void *, const void *)); + +/** + * Check function pointer whitelist for lruhash sizefunc callback values. + * + * @param fptr: function pointer to check. + * @return false if not in whitelist. + */ +int fptr_whitelist_hash_sizefunc(lruhash_sizefunc_t fptr); + +/** + * Check function pointer whitelist for lruhash compfunc callback values. + * + * @param fptr: function pointer to check. + * @return false if not in whitelist. + */ +int fptr_whitelist_hash_compfunc(lruhash_compfunc_t fptr); + +/** + * Check function pointer whitelist for lruhash delkeyfunc callback values. + * + * @param fptr: function pointer to check. + * @return false if not in whitelist. + */ +int fptr_whitelist_hash_delkeyfunc(lruhash_delkeyfunc_t fptr); + +/** + * Check function pointer whitelist for lruhash deldata callback values. + * + * @param fptr: function pointer to check. + * @return false if not in whitelist. + */ +int fptr_whitelist_hash_deldatafunc(lruhash_deldatafunc_t fptr); + +/** + * Check function pointer whitelist for lruhash markdel callback values. + * + * @param fptr: function pointer to check. + * @return false if not in whitelist. + */ +int fptr_whitelist_hash_markdelfunc(lruhash_markdelfunc_t fptr); + +/** + * Check function pointer whitelist for module_env send_query callback values. + * + * @param fptr: function pointer to check. + * @return false if not in whitelist. + */ +int fptr_whitelist_modenv_send_query(struct outbound_entry* (*fptr)( + uint8_t* qname, size_t qnamelen, uint16_t qtype, uint16_t qclass, + uint16_t flags, int dnssec, int want_dnssec, int nocaps, + struct sockaddr_storage* addr, socklen_t addrlen, + uint8_t* zone, size_t zonelen, + struct module_qstate* q)); + +/** + * Check function pointer whitelist for module_env detach_subs callback values. + * + * @param fptr: function pointer to check. + * @return false if not in whitelist. + */ +int fptr_whitelist_modenv_detach_subs(void (*fptr)( + struct module_qstate* qstate)); + +/** + * Check function pointer whitelist for module_env attach_sub callback values. + * + * @param fptr: function pointer to check. + * @return false if not in whitelist. + */ +int fptr_whitelist_modenv_attach_sub(int (*fptr)( + struct module_qstate* qstate, struct query_info* qinfo, + uint16_t qflags, int prime, struct module_qstate** newq)); + +/** + * Check function pointer whitelist for module_env kill_sub callback values. + * + * @param fptr: function pointer to check. + * @return false if not in whitelist. + */ +int fptr_whitelist_modenv_kill_sub(void (*fptr)(struct module_qstate* newq)); + +/** + * Check function pointer whitelist for module_env detect_cycle callback values. + * + * @param fptr: function pointer to check. + * @return false if not in whitelist. + */ +int fptr_whitelist_modenv_detect_cycle(int (*fptr)( + struct module_qstate* qstate, struct query_info* qinfo, + uint16_t flags, int prime)); + +/** + * Check function pointer whitelist for module init call values. + * + * @param fptr: function pointer to check. + * @return false if not in whitelist. + */ +int fptr_whitelist_mod_init(int (*fptr)(struct module_env* env, int id)); + +/** + * Check function pointer whitelist for module deinit call values. + * + * @param fptr: function pointer to check. + * @return false if not in whitelist. + */ +int fptr_whitelist_mod_deinit(void (*fptr)(struct module_env* env, int id)); + +/** + * Check function pointer whitelist for module operate call values. + * + * @param fptr: function pointer to check. + * @return false if not in whitelist. + */ +int fptr_whitelist_mod_operate(void (*fptr)(struct module_qstate* qstate, + enum module_ev event, int id, struct outbound_entry* outbound)); + +/** + * Check function pointer whitelist for module inform_super call values. + * + * @param fptr: function pointer to check. + * @return false if not in whitelist. + */ +int fptr_whitelist_mod_inform_super(void (*fptr)( + struct module_qstate* qstate, int id, struct module_qstate* super)); + +/** + * Check function pointer whitelist for module clear call values. + * + * @param fptr: function pointer to check. + * @return false if not in whitelist. + */ +int fptr_whitelist_mod_clear(void (*fptr)(struct module_qstate* qstate, + int id)); + +/** + * Check function pointer whitelist for module get_mem call values. + * + * @param fptr: function pointer to check. + * @return false if not in whitelist. + */ +int fptr_whitelist_mod_get_mem(size_t (*fptr)(struct module_env* env, int id)); + +/** + * Check function pointer whitelist for alloc clear on id overflow call values. + * + * @param fptr: function pointer to check. + * @return false if not in whitelist. + */ +int fptr_whitelist_alloc_cleanup(void (*fptr)(void*)); + +/** + * Check function pointer whitelist for tube listen handler values. + * + * @param fptr: function pointer to check. + * @return false if not in whitelist. + */ +int fptr_whitelist_tube_listen(tube_callback_t* fptr); + +/** + * Check function pointer whitelist for mesh state callback values. + * + * @param fptr: function pointer to check. + * @return false if not in whitelist. + */ +int fptr_whitelist_mesh_cb(mesh_cb_func_t fptr); + +/** + * Check function pointer whitelist for config_get_option func values. + * @param fptr: function pointer to check. + * @return false if not in whitelist. + */ +int fptr_whitelist_print_func(void (*fptr)(char*,void*)); + +/** Due to module breakage by fptr wlist, these test app declarations + * are presented here */ +/** + * compare two order_ids from lock-verify test app + * @param e1: first order_id + * @param e2: second order_id + * @return compare code -1, 0, +1 (like memcmp). + */ +int order_lock_cmp(const void* e1, const void* e2); + +/** + * compare two codeline structs for rbtree from memstats test app + * @param a: codeline + * @param b: codeline + * @return compare code -1, 0, +1 (like memcmp). + */ +int codeline_cmp(const void* a, const void* b); + +/** compare two replay_vars */ +int replay_var_compare(const void* a, const void* b); + +#endif /* UTIL_FPTR_WLIST_H */ diff --git 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All rights reserved. + * + * This software is open source. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * Neither the name of the NLNET LABS nor the names of its contributors may + * be used to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/** + * \file + * Implementation of locking and threading support. + * A place for locking debug code since most locking functions are macros. + */ + +#include "config.h" +#include "util/locks.h" +#include <signal.h> +#ifdef HAVE_SYS_WAIT_H +#include <sys/wait.h> +#endif + +/** block all signals, masks them away. */ +void +ub_thread_blocksigs(void) +{ +#if defined(HAVE_PTHREAD) || defined(HAVE_SOLARIS_THREADS) || defined(HAVE_SIGPROCMASK) +# if defined(HAVE_PTHREAD) || defined(HAVE_SOLARIS_THREADS) + int err; +# endif + sigset_t sigset; + sigfillset(&sigset); +#ifdef HAVE_PTHREAD + if((err=pthread_sigmask(SIG_SETMASK, &sigset, NULL))) + fatal_exit("pthread_sigmask: %s", strerror(err)); +#else +# ifdef HAVE_SOLARIS_THREADS + if((err=thr_sigsetmask(SIG_SETMASK, &sigset, NULL))) + fatal_exit("thr_sigsetmask: %s", strerror(err)); +# else + /* have nothing, do single process signal mask */ + if(sigprocmask(SIG_SETMASK, &sigset, NULL)) + fatal_exit("sigprocmask: %s", strerror(errno)); +# endif /* HAVE_SOLARIS_THREADS */ +#endif /* HAVE_PTHREAD */ +#endif /* have signal stuff */ +} + +/** unblock one signal, so we can catch it */ +void ub_thread_sig_unblock(int sig) +{ +#if defined(HAVE_PTHREAD) || defined(HAVE_SOLARIS_THREADS) || defined(HAVE_SIGPROCMASK) +# if defined(HAVE_PTHREAD) || defined(HAVE_SOLARIS_THREADS) + int err; +# endif + sigset_t sigset; + sigemptyset(&sigset); + sigaddset(&sigset, sig); +#ifdef HAVE_PTHREAD + if((err=pthread_sigmask(SIG_UNBLOCK, &sigset, NULL))) + fatal_exit("pthread_sigmask: %s", strerror(err)); +#else +# ifdef HAVE_SOLARIS_THREADS + if((err=thr_sigsetmask(SIG_UNBLOCK, &sigset, NULL))) + fatal_exit("thr_sigsetmask: %s", strerror(err)); +# else + /* have nothing, do single thread case */ + if(sigprocmask(SIG_UNBLOCK, &sigset, NULL)) + fatal_exit("sigprocmask: %s", strerror(errno)); +# endif /* HAVE_SOLARIS_THREADS */ +#endif /* HAVE_PTHREAD */ +#else + (void)sig; +#endif /* have signal stuff */ +} + +#if !defined(HAVE_PTHREAD) && !defined(HAVE_SOLARIS_THREADS) && !defined(HAVE_WINDOWS_THREADS) +/** + * No threading available: fork a new process. + * This means no shared data structure, and no locking. + * Only the main thread ever returns. Exits on errors. + * @param thr: the location where to store the thread-id. + * @param func: function body of the thread. Return value of func is lost. + * @param arg: user argument to func. + */ +void +ub_thr_fork_create(ub_thread_t* thr, void* (*func)(void*), void* arg) +{ + pid_t pid = fork(); + switch(pid) { + default: /* main */ + *thr = (ub_thread_t)pid; + return; + case 0: /* child */ + *thr = (ub_thread_t)getpid(); + (void)(*func)(arg); + exit(0); + case -1: /* error */ + fatal_exit("could not fork: %s", strerror(errno)); + } +} + +/** + * There is no threading. Wait for a process to terminate. + * Note that ub_thread_t is defined as pid_t. + * @param thread: the process id to wait for. + */ +void ub_thr_fork_wait(ub_thread_t thread) +{ + int status = 0; + if(waitpid((pid_t)thread, &status, 0) == -1) + log_err("waitpid(%d): %s", (int)thread, strerror(errno)); + if(status != 0) + log_warn("process %d abnormal exit with status %d", + (int)thread, status); +} +#endif /* !defined(HAVE_PTHREAD) && !defined(HAVE_SOLARIS_THREADS) && !defined(HAVE_WINDOWS_THREADS) */ + +#ifdef HAVE_SOLARIS_THREADS +void* ub_thread_key_get(ub_thread_key_t key) +{ + void* ret=NULL; + LOCKRET(thr_getspecific(key, &ret)); + return ret; +} +#endif + +#ifdef HAVE_WINDOWS_THREADS +/** log a windows GetLastError message */ +static void log_win_err(const char* str, DWORD err) +{ + LPTSTR buf; + if(FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM | + FORMAT_MESSAGE_IGNORE_INSERTS | FORMAT_MESSAGE_ALLOCATE_BUFFER, + NULL, err, 0, (LPTSTR)&buf, 0, NULL) == 0) { + /* could not format error message */ + log_err("%s, GetLastError=%d", str, (int)err); + return; + } + log_err("%s, (err=%d): %s", str, (int)err, buf); + LocalFree(buf); +} + +void lock_basic_init(lock_basic_t* lock) +{ + /* implement own lock, because windows HANDLE as Mutex usage + * uses too many handles and would bog down the whole system. */ + (void)InterlockedExchange(lock, 0); +} + +void lock_basic_destroy(lock_basic_t* lock) +{ + (void)InterlockedExchange(lock, 0); +} + +void lock_basic_lock(lock_basic_t* lock) +{ + LONG wait = 1; /* wait 1 msec at first */ + + while(InterlockedExchange(lock, 1)) { + /* if the old value was 1 then if was already locked */ + Sleep(wait); /* wait with sleep */ + wait *= 2; /* exponential backoff for waiting */ + } + /* the old value was 0, but we inserted 1, we locked it! */ +} + +void lock_basic_unlock(lock_basic_t* lock) +{ + /* unlock it by inserting the value of 0. xchg for cache coherency. */ + (void)InterlockedExchange(lock, 0); +} + +void ub_thread_key_create(ub_thread_key_t* key, void* f) +{ + *key = TlsAlloc(); + if(*key == TLS_OUT_OF_INDEXES) { + *key = 0; + log_win_err("TlsAlloc Failed(OUT_OF_INDEXES)", GetLastError()); + } + else ub_thread_key_set(*key, f); +} + +void ub_thread_key_set(ub_thread_key_t key, void* v) +{ + if(!TlsSetValue(key, v)) { + log_win_err("TlsSetValue failed", GetLastError()); + } +} + +void* ub_thread_key_get(ub_thread_key_t key) +{ + void* ret = (void*)TlsGetValue(key); + if(ret == NULL && GetLastError() != ERROR_SUCCESS) { + log_win_err("TlsGetValue failed", GetLastError()); + } + return ret; +} + +void ub_thread_create(ub_thread_t* thr, void* (*func)(void*), void* arg) +{ +#ifndef HAVE__BEGINTHREADEX + *thr = CreateThread(NULL, /* default security (no inherit handle) */ + 0, /* default stack size */ + (LPTHREAD_START_ROUTINE)func, arg, + 0, /* default flags, run immediately */ + NULL); /* do not store thread identifier anywhere */ +#else + /* the begintheadex routine setups for the C lib; aligns stack */ + *thr=(ub_thread_t)_beginthreadex(NULL, 0, (void*)func, arg, 0, NULL); +#endif + if(*thr == NULL) { + log_win_err("CreateThread failed", GetLastError()); + fatal_exit("thread create failed"); + } +} + +ub_thread_t ub_thread_self(void) +{ + return GetCurrentThread(); +} + +void ub_thread_join(ub_thread_t thr) +{ + DWORD ret = WaitForSingleObject(thr, INFINITE); + if(ret == WAIT_FAILED) { + log_win_err("WaitForSingleObject(Thread):WAIT_FAILED", + GetLastError()); + } else if(ret == WAIT_TIMEOUT) { + log_win_err("WaitForSingleObject(Thread):WAIT_TIMEOUT", + GetLastError()); + } + /* and close the handle to the thread */ + if(!CloseHandle(thr)) { + log_win_err("CloseHandle(Thread) failed", GetLastError()); + } +} +#endif /* HAVE_WINDOWS_THREADS */ diff --git a/external/unbound/util/locks.h b/external/unbound/util/locks.h new file mode 100644 index 000000000..3776912aa --- /dev/null +++ b/external/unbound/util/locks.h @@ -0,0 +1,296 @@ +/** + * util/locks.h - unbound locking primitives + * + * Copyright (c) 2007, NLnet Labs. All rights reserved. + * + * This software is open source. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * Neither the name of the NLNET LABS nor the names of its contributors may + * be used to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef UTIL_LOCKS_H +#define UTIL_LOCKS_H + +/** + * \file + * Locking primitives. + * If pthreads is available, these are used. + * If no locking exists, they do nothing. + * + * The idea is to have different sorts of locks for different tasks. + * This allows the locking code to be ported more easily. + * + * Types of locks that are supported. + * o lock_rw: lock that has many readers and one writer (to a data entry). + * o lock_basic: simple mutex. Blocking, one person has access only. + * This lock is meant for non performance sensitive uses. + * o lock_quick: speed lock. For performance sensitive locking of critical + * sections. Could be implemented by a mutex or a spinlock. + * + * Also thread creation and deletion functions are defined here. + */ + +/* if you define your own LOCKRET before including locks.h, you can get most + * locking functions without the dependency on log_err. */ +#ifndef LOCKRET +#include "util/log.h" +/** + * The following macro is used to check the return value of the + * pthread calls. They return 0 on success and an errno on error. + * The errno is logged to the logfile with a descriptive comment. + */ +#define LOCKRET(func) do {\ + int lockret_err; \ + if( (lockret_err=(func)) != 0) \ + log_err("%s at %d could not " #func ": %s", \ + __FILE__, __LINE__, strerror(lockret_err)); \ + } while(0) +#endif + +/** DEBUG: use thread debug whenever possible */ +#if defined(HAVE_PTHREAD) && defined(HAVE_PTHREAD_SPINLOCK_T) && defined(ENABLE_LOCK_CHECKS) +# define USE_THREAD_DEBUG +#endif + +#ifdef USE_THREAD_DEBUG +/******************* THREAD DEBUG ************************/ +/* (some) checking; to detect races and deadlocks. */ +#include "testcode/checklocks.h" + +#else /* USE_THREAD_DEBUG */ +#define lock_protect(lock, area, size) /* nop */ +#define lock_unprotect(lock, area) /* nop */ +#define lock_get_mem(lock) (0) /* nothing */ +#define checklock_start() /* nop */ +#define checklock_stop() /* nop */ + +#ifdef HAVE_PTHREAD +#include <pthread.h> + +/******************* PTHREAD ************************/ + +/** use pthread mutex for basic lock */ +typedef pthread_mutex_t lock_basic_t; +/** small front for pthread init func, NULL is default attrs. */ +#define lock_basic_init(lock) LOCKRET(pthread_mutex_init(lock, NULL)) +#define lock_basic_destroy(lock) LOCKRET(pthread_mutex_destroy(lock)) +#define lock_basic_lock(lock) LOCKRET(pthread_mutex_lock(lock)) +#define lock_basic_unlock(lock) LOCKRET(pthread_mutex_unlock(lock)) + +#ifndef HAVE_PTHREAD_RWLOCK_T +/** in case rwlocks are not supported, use a mutex. */ +typedef pthread_mutex_t lock_rw_t; +#define lock_rw_init(lock) LOCKRET(pthread_mutex_init(lock, NULL)) +#define lock_rw_destroy(lock) LOCKRET(pthread_mutex_destroy(lock)) +#define lock_rw_rdlock(lock) LOCKRET(pthread_mutex_lock(lock)) +#define lock_rw_wrlock(lock) LOCKRET(pthread_mutex_lock(lock)) +#define lock_rw_unlock(lock) LOCKRET(pthread_mutex_unlock(lock)) +#else /* HAVE_PTHREAD_RWLOCK_T */ +/** we use the pthread rwlock */ +typedef pthread_rwlock_t lock_rw_t; +/** small front for pthread init func, NULL is default attrs. */ +#define lock_rw_init(lock) LOCKRET(pthread_rwlock_init(lock, NULL)) +#define lock_rw_destroy(lock) LOCKRET(pthread_rwlock_destroy(lock)) +#define lock_rw_rdlock(lock) LOCKRET(pthread_rwlock_rdlock(lock)) +#define lock_rw_wrlock(lock) LOCKRET(pthread_rwlock_wrlock(lock)) +#define lock_rw_unlock(lock) LOCKRET(pthread_rwlock_unlock(lock)) +#endif /* HAVE_PTHREAD_RWLOCK_T */ + +#ifndef HAVE_PTHREAD_SPINLOCK_T +/** in case spinlocks are not supported, use a mutex. */ +typedef pthread_mutex_t lock_quick_t; +/** small front for pthread init func, NULL is default attrs. */ +#define lock_quick_init(lock) LOCKRET(pthread_mutex_init(lock, NULL)) +#define lock_quick_destroy(lock) LOCKRET(pthread_mutex_destroy(lock)) +#define lock_quick_lock(lock) LOCKRET(pthread_mutex_lock(lock)) +#define lock_quick_unlock(lock) LOCKRET(pthread_mutex_unlock(lock)) + +#else /* HAVE_PTHREAD_SPINLOCK_T */ +/** use pthread spinlock for the quick lock */ +typedef pthread_spinlock_t lock_quick_t; +/** + * allocate process private since this is available whether + * Thread Process-Shared Synchronization is supported or not. + * This means only threads inside this process may access the lock. + * (not threads from another process that shares memory). + * spinlocks are not supported on all pthread platforms. + */ +#define lock_quick_init(lock) LOCKRET(pthread_spin_init(lock, PTHREAD_PROCESS_PRIVATE)) +#define lock_quick_destroy(lock) LOCKRET(pthread_spin_destroy(lock)) +#define lock_quick_lock(lock) LOCKRET(pthread_spin_lock(lock)) +#define lock_quick_unlock(lock) LOCKRET(pthread_spin_unlock(lock)) + +#endif /* HAVE SPINLOCK */ + +/** Thread creation */ +typedef pthread_t ub_thread_t; +/** Pass where to store tread_t in thr. Use default NULL attributes. */ +#define ub_thread_create(thr, func, arg) LOCKRET(pthread_create(thr, NULL, func, arg)) +/** get self id. */ +#define ub_thread_self() pthread_self() +/** wait for another thread to terminate */ +#define ub_thread_join(thread) LOCKRET(pthread_join(thread, NULL)) +typedef pthread_key_t ub_thread_key_t; +#define ub_thread_key_create(key, f) LOCKRET(pthread_key_create(key, f)) +#define ub_thread_key_set(key, v) LOCKRET(pthread_setspecific(key, v)) +#define ub_thread_key_get(key) pthread_getspecific(key) + +#else /* we do not HAVE_PTHREAD */ +#ifdef HAVE_SOLARIS_THREADS + +/******************* SOLARIS THREADS ************************/ +#include <synch.h> +#include <thread.h> + +typedef rwlock_t lock_rw_t; +#define lock_rw_init(lock) LOCKRET(rwlock_init(lock, USYNC_THREAD, NULL)) +#define lock_rw_destroy(lock) LOCKRET(rwlock_destroy(lock)) +#define lock_rw_rdlock(lock) LOCKRET(rw_rdlock(lock)) +#define lock_rw_wrlock(lock) LOCKRET(rw_wrlock(lock)) +#define lock_rw_unlock(lock) LOCKRET(rw_unlock(lock)) + +/** use basic mutex */ +typedef mutex_t lock_basic_t; +#define lock_basic_init(lock) LOCKRET(mutex_init(lock, USYNC_THREAD, NULL)) +#define lock_basic_destroy(lock) LOCKRET(mutex_destroy(lock)) +#define lock_basic_lock(lock) LOCKRET(mutex_lock(lock)) +#define lock_basic_unlock(lock) LOCKRET(mutex_unlock(lock)) + +/** No spinlocks in solaris threads API. Use a mutex. */ +typedef mutex_t lock_quick_t; +#define lock_quick_init(lock) LOCKRET(mutex_init(lock, USYNC_THREAD, NULL)) +#define lock_quick_destroy(lock) LOCKRET(mutex_destroy(lock)) +#define lock_quick_lock(lock) LOCKRET(mutex_lock(lock)) +#define lock_quick_unlock(lock) LOCKRET(mutex_unlock(lock)) + +/** Thread creation, create a default thread. */ +typedef thread_t ub_thread_t; +#define ub_thread_create(thr, func, arg) LOCKRET(thr_create(NULL, NULL, func, arg, NULL, thr)) +#define ub_thread_self() thr_self() +#define ub_thread_join(thread) LOCKRET(thr_join(thread, NULL, NULL)) +typedef thread_key_t ub_thread_key_t; +#define ub_thread_key_create(key, f) LOCKRET(thr_keycreate(key, f)) +#define ub_thread_key_set(key, v) LOCKRET(thr_setspecific(key, v)) +void* ub_thread_key_get(ub_thread_key_t key); + + +#else /* we do not HAVE_SOLARIS_THREADS and no PTHREADS */ +/******************* WINDOWS THREADS ************************/ +#ifdef HAVE_WINDOWS_THREADS +#include <windows.h> + +/* Use a mutex */ +typedef LONG lock_rw_t; +#define lock_rw_init(lock) lock_basic_init(lock) +#define lock_rw_destroy(lock) lock_basic_destroy(lock) +#define lock_rw_rdlock(lock) lock_basic_lock(lock) +#define lock_rw_wrlock(lock) lock_basic_lock(lock) +#define lock_rw_unlock(lock) lock_basic_unlock(lock) + +/** the basic lock is a mutex, implemented opaquely, for error handling. */ +typedef LONG lock_basic_t; +void lock_basic_init(lock_basic_t* lock); +void lock_basic_destroy(lock_basic_t* lock); +void lock_basic_lock(lock_basic_t* lock); +void lock_basic_unlock(lock_basic_t* lock); + +/** on windows no spinlock, use mutex too. */ +typedef LONG lock_quick_t; +#define lock_quick_init(lock) lock_basic_init(lock) +#define lock_quick_destroy(lock) lock_basic_destroy(lock) +#define lock_quick_lock(lock) lock_basic_lock(lock) +#define lock_quick_unlock(lock) lock_basic_unlock(lock) + +/** Thread creation, create a default thread. */ +typedef HANDLE ub_thread_t; +void ub_thread_create(ub_thread_t* thr, void* (*func)(void*), void* arg); +ub_thread_t ub_thread_self(void); +void ub_thread_join(ub_thread_t thr); +typedef DWORD ub_thread_key_t; +void ub_thread_key_create(ub_thread_key_t* key, void* f); +void ub_thread_key_set(ub_thread_key_t key, void* v); +void* ub_thread_key_get(ub_thread_key_t key); + +#else /* we do not HAVE_SOLARIS_THREADS, PTHREADS or WINDOWS_THREADS */ + +/******************* NO THREADS ************************/ +#define THREADS_DISABLED 1 +/** In case there is no thread support, define locks to do nothing */ +typedef int lock_rw_t; +#define lock_rw_init(lock) /* nop */ +#define lock_rw_destroy(lock) /* nop */ +#define lock_rw_rdlock(lock) /* nop */ +#define lock_rw_wrlock(lock) /* nop */ +#define lock_rw_unlock(lock) /* nop */ + +/** define locks to do nothing */ +typedef int lock_basic_t; +#define lock_basic_init(lock) /* nop */ +#define lock_basic_destroy(lock) /* nop */ +#define lock_basic_lock(lock) /* nop */ +#define lock_basic_unlock(lock) /* nop */ + +/** define locks to do nothing */ +typedef int lock_quick_t; +#define lock_quick_init(lock) /* nop */ +#define lock_quick_destroy(lock) /* nop */ +#define lock_quick_lock(lock) /* nop */ +#define lock_quick_unlock(lock) /* nop */ + +/** Thread creation, threads do not exist */ +typedef pid_t ub_thread_t; +/** ub_thread_create is simulated with fork (extremely heavy threads, + * with no shared memory). */ +#define ub_thread_create(thr, func, arg) \ + ub_thr_fork_create(thr, func, arg) +#define ub_thread_self() getpid() +#define ub_thread_join(thread) ub_thr_fork_wait(thread) +void ub_thr_fork_wait(ub_thread_t thread); +void ub_thr_fork_create(ub_thread_t* thr, void* (*func)(void*), void* arg); +typedef void* ub_thread_key_t; +#define ub_thread_key_create(key, f) (*(key)) = NULL +#define ub_thread_key_set(key, v) (key) = (v) +#define ub_thread_key_get(key) (key) + +#endif /* HAVE_WINDOWS_THREADS */ +#endif /* HAVE_SOLARIS_THREADS */ +#endif /* HAVE_PTHREAD */ +#endif /* USE_THREAD_DEBUG */ + +/** + * Block all signals for this thread. + * fatal exit on error. + */ +void ub_thread_blocksigs(void); + +/** + * unblock one signal for this thread. + */ +void ub_thread_sig_unblock(int sig); + +#endif /* UTIL_LOCKS_H */ diff --git a/external/unbound/util/log.c b/external/unbound/util/log.c new file mode 100644 index 000000000..f90efa71c --- /dev/null +++ b/external/unbound/util/log.c @@ -0,0 +1,485 @@ +/* + * util/log.c - implementation of the log code + * + * Copyright (c) 2007, NLnet Labs. All rights reserved. + * + * This software is open source. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * Neither the name of the NLNET LABS nor the names of its contributors may + * be used to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ +/** + * \file + * Implementation of log.h. + */ + +#include "config.h" +#include "util/log.h" +#include "util/locks.h" +#include "ldns/sbuffer.h" +#include <stdarg.h> +#ifdef HAVE_TIME_H +#include <time.h> +#endif +#ifdef HAVE_SYSLOG_H +# include <syslog.h> +#else +/**define LOG_ constants */ +# define LOG_CRIT 2 +# define LOG_ERR 3 +# define LOG_WARNING 4 +# define LOG_NOTICE 5 +# define LOG_INFO 6 +# define LOG_DEBUG 7 +#endif +#ifdef UB_ON_WINDOWS +# include "winrc/win_svc.h" +#endif + +/* default verbosity */ +enum verbosity_value verbosity = 0; +/** the file logged to. */ +static FILE* logfile = 0; +/** if key has been created */ +static int key_created = 0; +/** pthread key for thread ids in logfile */ +static ub_thread_key_t logkey; +#ifndef THREADS_DISABLED +/** pthread mutex to protect FILE* */ +static lock_quick_t log_lock; +#endif +/** the identity of this executable/process */ +static const char* ident="unbound"; +#if defined(HAVE_SYSLOG_H) || defined(UB_ON_WINDOWS) +/** are we using syslog(3) to log to */ +static int logging_to_syslog = 0; +#endif /* HAVE_SYSLOG_H */ +/** time to print in log, if NULL, use time(2) */ +static time_t* log_now = NULL; +/** print time in UTC or in secondsfrom1970 */ +static int log_time_asc = 0; + +void +log_init(const char* filename, int use_syslog, const char* chrootdir) +{ + FILE *f; + if(!key_created) { + key_created = 1; + ub_thread_key_create(&logkey, NULL); + lock_quick_init(&log_lock); + } + lock_quick_lock(&log_lock); + if(logfile +#if defined(HAVE_SYSLOG_H) || defined(UB_ON_WINDOWS) + || logging_to_syslog +#endif + ) { + lock_quick_unlock(&log_lock); /* verbose() needs the lock */ + verbose(VERB_QUERY, "switching log to %s", + use_syslog?"syslog":(filename&&filename[0]?filename:"stderr")); + lock_quick_lock(&log_lock); + } + if(logfile && logfile != stderr) + fclose(logfile); +#ifdef HAVE_SYSLOG_H + if(logging_to_syslog) { + closelog(); + logging_to_syslog = 0; + } + if(use_syslog) { + /* do not delay opening until first write, because we may + * chroot and no longer be able to access dev/log and so on */ + openlog(ident, LOG_NDELAY, LOG_DAEMON); + logging_to_syslog = 1; + lock_quick_unlock(&log_lock); + return; + } +#elif defined(UB_ON_WINDOWS) + if(logging_to_syslog) { + logging_to_syslog = 0; + } + if(use_syslog) { + logging_to_syslog = 1; + lock_quick_unlock(&log_lock); + return; + } +#endif /* HAVE_SYSLOG_H */ + if(!filename || !filename[0]) { + logfile = stderr; + lock_quick_unlock(&log_lock); + return; + } + /* open the file for logging */ + if(chrootdir && chrootdir[0] && strncmp(filename, chrootdir, + strlen(chrootdir)) == 0) + filename += strlen(chrootdir); + f = fopen(filename, "a"); + if(!f) { + lock_quick_unlock(&log_lock); + log_err("Could not open logfile %s: %s", filename, + strerror(errno)); + return; + } +#ifndef UB_ON_WINDOWS + /* line buffering does not work on windows */ + setvbuf(f, NULL, (int)_IOLBF, 0); +#endif + logfile = f; + lock_quick_unlock(&log_lock); +} + +void log_file(FILE *f) +{ + lock_quick_lock(&log_lock); + logfile = f; + lock_quick_unlock(&log_lock); +} + +void log_thread_set(int* num) +{ + ub_thread_key_set(logkey, num); +} + +void log_ident_set(const char* id) +{ + ident = id; +} + +void log_set_time(time_t* t) +{ + log_now = t; +} + +void log_set_time_asc(int use_asc) +{ + log_time_asc = use_asc; +} + +void +log_vmsg(int pri, const char* type, + const char *format, va_list args) +{ + char message[MAXSYSLOGMSGLEN]; + unsigned int* tid = (unsigned int*)ub_thread_key_get(logkey); + time_t now; +#if defined(HAVE_STRFTIME) && defined(HAVE_LOCALTIME_R) + char tmbuf[32]; + struct tm tm; +#elif defined(UB_ON_WINDOWS) + char tmbuf[128], dtbuf[128]; +#endif + (void)pri; + vsnprintf(message, sizeof(message), format, args); +#ifdef HAVE_SYSLOG_H + if(logging_to_syslog) { + syslog(pri, "[%d:%x] %s: %s", + (int)getpid(), tid?*tid:0, type, message); + return; + } +#elif defined(UB_ON_WINDOWS) + if(logging_to_syslog) { + char m[32768]; + HANDLE* s; + LPCTSTR str = m; + DWORD tp = MSG_GENERIC_ERR; + WORD wt = EVENTLOG_ERROR_TYPE; + if(strcmp(type, "info") == 0) { + tp=MSG_GENERIC_INFO; + wt=EVENTLOG_INFORMATION_TYPE; + } else if(strcmp(type, "warning") == 0) { + tp=MSG_GENERIC_WARN; + wt=EVENTLOG_WARNING_TYPE; + } else if(strcmp(type, "notice") == 0 + || strcmp(type, "debug") == 0) { + tp=MSG_GENERIC_SUCCESS; + wt=EVENTLOG_SUCCESS; + } + snprintf(m, sizeof(m), "[%s:%x] %s: %s", + ident, tid?*tid:0, type, message); + s = RegisterEventSource(NULL, SERVICE_NAME); + if(!s) return; + ReportEvent(s, wt, 0, tp, NULL, 1, 0, &str, NULL); + DeregisterEventSource(s); + return; + } +#endif /* HAVE_SYSLOG_H */ + lock_quick_lock(&log_lock); + if(!logfile) { + lock_quick_unlock(&log_lock); + return; + } + if(log_now) + now = (time_t)*log_now; + else now = (time_t)time(NULL); +#if defined(HAVE_STRFTIME) && defined(HAVE_LOCALTIME_R) + if(log_time_asc && strftime(tmbuf, sizeof(tmbuf), "%b %d %H:%M:%S", + localtime_r(&now, &tm))%(sizeof(tmbuf)) != 0) { + /* %sizeof buf!=0 because old strftime returned max on error */ + fprintf(logfile, "%s %s[%d:%x] %s: %s\n", tmbuf, + ident, (int)getpid(), tid?*tid:0, type, message); + } else +#elif defined(UB_ON_WINDOWS) + if(log_time_asc && GetTimeFormat(LOCALE_USER_DEFAULT, 0, NULL, NULL, + tmbuf, sizeof(tmbuf)) && GetDateFormat(LOCALE_USER_DEFAULT, 0, + NULL, NULL, dtbuf, sizeof(dtbuf))) { + fprintf(logfile, "%s %s %s[%d:%x] %s: %s\n", dtbuf, tmbuf, + ident, (int)getpid(), tid?*tid:0, type, message); + } else +#endif + fprintf(logfile, "[" ARG_LL "d] %s[%d:%x] %s: %s\n", (long long)now, + ident, (int)getpid(), tid?*tid:0, type, message); +#ifdef UB_ON_WINDOWS + /* line buffering does not work on windows */ + fflush(logfile); +#endif + lock_quick_unlock(&log_lock); +} + +/** + * implementation of log_info + * @param format: format string printf-style. + */ +void +log_info(const char *format, ...) +{ + va_list args; + va_start(args, format); + log_vmsg(LOG_INFO, "info", format, args); + va_end(args); +} + +/** + * implementation of log_err + * @param format: format string printf-style. + */ +void +log_err(const char *format, ...) +{ + va_list args; + va_start(args, format); + log_vmsg(LOG_ERR, "error", format, args); + va_end(args); +} + +/** + * implementation of log_warn + * @param format: format string printf-style. + */ +void +log_warn(const char *format, ...) +{ + va_list args; + va_start(args, format); + log_vmsg(LOG_WARNING, "warning", format, args); + va_end(args); +} + +/** + * implementation of fatal_exit + * @param format: format string printf-style. + */ +void +fatal_exit(const char *format, ...) +{ + va_list args; + va_start(args, format); + log_vmsg(LOG_CRIT, "fatal error", format, args); + va_end(args); + exit(1); +} + +/** + * implementation of verbose + * @param level: verbose level for the message. + * @param format: format string printf-style. + */ +void +verbose(enum verbosity_value level, const char* format, ...) +{ + va_list args; + va_start(args, format); + if(verbosity >= level) { + if(level == VERB_OPS) + log_vmsg(LOG_NOTICE, "notice", format, args); + else if(level == VERB_DETAIL) + log_vmsg(LOG_INFO, "info", format, args); + else log_vmsg(LOG_DEBUG, "debug", format, args); + } + va_end(args); +} + +/** log hex data */ +static void +log_hex_f(enum verbosity_value v, const char* msg, void* data, size_t length) +{ + size_t i, j; + uint8_t* data8 = (uint8_t*)data; + const char* hexchar = "0123456789ABCDEF"; + char buf[1024+1]; /* alloc blocksize hex chars + \0 */ + const size_t blocksize = 512; + size_t len; + + if(length == 0) { + verbose(v, "%s[%u]", msg, (unsigned)length); + return; + } + + for(i=0; i<length; i+=blocksize/2) { + len = blocksize/2; + if(length - i < blocksize/2) + len = length - i; + for(j=0; j<len; j++) { + buf[j*2] = hexchar[ data8[i+j] >> 4 ]; + buf[j*2 + 1] = hexchar[ data8[i+j] & 0xF ]; + } + buf[len*2] = 0; + verbose(v, "%s[%u:%u] %.*s", msg, (unsigned)length, + (unsigned)i, (int)len*2, buf); + } +} + +void +log_hex(const char* msg, void* data, size_t length) +{ + log_hex_f(verbosity, msg, data, length); +} + +void log_buf(enum verbosity_value level, const char* msg, sldns_buffer* buf) +{ + if(verbosity < level) + return; + log_hex_f(level, msg, sldns_buffer_begin(buf), sldns_buffer_limit(buf)); +} + +#ifdef USE_WINSOCK +char* wsa_strerror(DWORD err) +{ + static char unknown[32]; + + switch(err) { + case WSA_INVALID_HANDLE: return "Specified event object handle is invalid."; + case WSA_NOT_ENOUGH_MEMORY: return "Insufficient memory available."; + case WSA_INVALID_PARAMETER: return "One or more parameters are invalid."; + case WSA_OPERATION_ABORTED: return "Overlapped operation aborted."; + case WSA_IO_INCOMPLETE: return "Overlapped I/O event object not in signaled state."; + case WSA_IO_PENDING: return "Overlapped operations will complete later."; + case WSAEINTR: return "Interrupted function call."; + case WSAEBADF: return "File handle is not valid."; + case WSAEACCES: return "Permission denied."; + case WSAEFAULT: return "Bad address."; + case WSAEINVAL: return "Invalid argument."; + case WSAEMFILE: return "Too many open files."; + case WSAEWOULDBLOCK: return "Resource temporarily unavailable."; + case WSAEINPROGRESS: return "Operation now in progress."; + case WSAEALREADY: return "Operation already in progress."; + case WSAENOTSOCK: return "Socket operation on nonsocket."; + case WSAEDESTADDRREQ: return "Destination address required."; + case WSAEMSGSIZE: return "Message too long."; + case WSAEPROTOTYPE: return "Protocol wrong type for socket."; + case WSAENOPROTOOPT: return "Bad protocol option."; + case WSAEPROTONOSUPPORT: return "Protocol not supported."; + case WSAESOCKTNOSUPPORT: return "Socket type not supported."; + case WSAEOPNOTSUPP: return "Operation not supported."; + case WSAEPFNOSUPPORT: return "Protocol family not supported."; + case WSAEAFNOSUPPORT: return "Address family not supported by protocol family."; + case WSAEADDRINUSE: return "Address already in use."; + case WSAEADDRNOTAVAIL: return "Cannot assign requested address."; + case WSAENETDOWN: return "Network is down."; + case WSAENETUNREACH: return "Network is unreachable."; + case WSAENETRESET: return "Network dropped connection on reset."; + case WSAECONNABORTED: return "Software caused connection abort."; + case WSAECONNRESET: return "Connection reset by peer."; + case WSAENOBUFS: return "No buffer space available."; + case WSAEISCONN: return "Socket is already connected."; + case WSAENOTCONN: return "Socket is not connected."; + case WSAESHUTDOWN: return "Cannot send after socket shutdown."; + case WSAETOOMANYREFS: return "Too many references."; + case WSAETIMEDOUT: return "Connection timed out."; + case WSAECONNREFUSED: return "Connection refused."; + case WSAELOOP: return "Cannot translate name."; + case WSAENAMETOOLONG: return "Name too long."; + case WSAEHOSTDOWN: return "Host is down."; + case WSAEHOSTUNREACH: return "No route to host."; + case WSAENOTEMPTY: return "Directory not empty."; + case WSAEPROCLIM: return "Too many processes."; + case WSAEUSERS: return "User quota exceeded."; + case WSAEDQUOT: return "Disk quota exceeded."; + case WSAESTALE: return "Stale file handle reference."; + case WSAEREMOTE: return "Item is remote."; + case WSASYSNOTREADY: return "Network subsystem is unavailable."; + case WSAVERNOTSUPPORTED: return "Winsock.dll version out of range."; + case WSANOTINITIALISED: return "Successful WSAStartup not yet performed."; + case WSAEDISCON: return "Graceful shutdown in progress."; + case WSAENOMORE: return "No more results."; + case WSAECANCELLED: return "Call has been canceled."; + case WSAEINVALIDPROCTABLE: return "Procedure call table is invalid."; + case WSAEINVALIDPROVIDER: return "Service provider is invalid."; + case WSAEPROVIDERFAILEDINIT: return "Service provider failed to initialize."; + case WSASYSCALLFAILURE: return "System call failure."; + case WSASERVICE_NOT_FOUND: return "Service not found."; + case WSATYPE_NOT_FOUND: return "Class type not found."; + case WSA_E_NO_MORE: return "No more results."; + case WSA_E_CANCELLED: return "Call was canceled."; + case WSAEREFUSED: return "Database query was refused."; + case WSAHOST_NOT_FOUND: return "Host not found."; + case WSATRY_AGAIN: return "Nonauthoritative host not found."; + case WSANO_RECOVERY: return "This is a nonrecoverable error."; + case WSANO_DATA: return "Valid name, no data record of requested type."; + case WSA_QOS_RECEIVERS: return "QOS receivers."; + case WSA_QOS_SENDERS: return "QOS senders."; + case WSA_QOS_NO_SENDERS: return "No QOS senders."; + case WSA_QOS_NO_RECEIVERS: return "QOS no receivers."; + case WSA_QOS_REQUEST_CONFIRMED: return "QOS request confirmed."; + case WSA_QOS_ADMISSION_FAILURE: return "QOS admission error."; + case WSA_QOS_POLICY_FAILURE: return "QOS policy failure."; + case WSA_QOS_BAD_STYLE: return "QOS bad style."; + case WSA_QOS_BAD_OBJECT: return "QOS bad object."; + case WSA_QOS_TRAFFIC_CTRL_ERROR: return "QOS traffic control error."; + case WSA_QOS_GENERIC_ERROR: return "QOS generic error."; + case WSA_QOS_ESERVICETYPE: return "QOS service type error."; + case WSA_QOS_EFLOWSPEC: return "QOS flowspec error."; + case WSA_QOS_EPROVSPECBUF: return "Invalid QOS provider buffer."; + case WSA_QOS_EFILTERSTYLE: return "Invalid QOS filter style."; + case WSA_QOS_EFILTERTYPE: return "Invalid QOS filter type."; + case WSA_QOS_EFILTERCOUNT: return "Incorrect QOS filter count."; + case WSA_QOS_EOBJLENGTH: return "Invalid QOS object length."; + case WSA_QOS_EFLOWCOUNT: return "Incorrect QOS flow count."; + /*case WSA_QOS_EUNKOWNPSOBJ: return "Unrecognized QOS object.";*/ + case WSA_QOS_EPOLICYOBJ: return "Invalid QOS policy object."; + case WSA_QOS_EFLOWDESC: return "Invalid QOS flow descriptor."; + case WSA_QOS_EPSFLOWSPEC: return "Invalid QOS provider-specific flowspec."; + case WSA_QOS_EPSFILTERSPEC: return "Invalid QOS provider-specific filterspec."; + case WSA_QOS_ESDMODEOBJ: return "Invalid QOS shape discard mode object."; + case WSA_QOS_ESHAPERATEOBJ: return "Invalid QOS shaping rate object."; + case WSA_QOS_RESERVED_PETYPE: return "Reserved policy QOS element type."; + default: + snprintf(unknown, sizeof(unknown), + "unknown WSA error code %d", (int)err); + return unknown; + } +} +#endif /* USE_WINSOCK */ diff --git a/external/unbound/util/log.h b/external/unbound/util/log.h new file mode 100644 index 000000000..ea283da7b --- /dev/null +++ b/external/unbound/util/log.h @@ -0,0 +1,198 @@ +/* + * util/log.h - logging service + * + * Copyright (c) 2007, NLnet Labs. All rights reserved. + * + * This software is open source. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * Neither the name of the NLNET LABS nor the names of its contributors may + * be used to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/** + * \file + * + * This file contains logging functions. + */ + +#ifndef UTIL_LOG_H +#define UTIL_LOG_H +struct sldns_buffer; + +/** + * verbosity value: + */ +enum verbosity_value { + /** 0 - no verbose messages */ + NO_VERBOSE = 0, + /** 1 - operational information */ + VERB_OPS, + /** 2 - detailed information */ + VERB_DETAIL, + /** 3 - query level information */ + VERB_QUERY, + /** 4 - algorithm level information */ + VERB_ALGO, + /** 5 - querier client information */ + VERB_CLIENT +}; + +/** The global verbosity setting */ +extern enum verbosity_value verbosity; + +/** + * log a verbose message, pass the level for this message. + * It has printf formatted arguments. No trailing newline is needed. + * @param level: verbosity level for this message, compared to global + * verbosity setting. + * @param format: printf-style format string. Arguments follow. + */ +void verbose(enum verbosity_value level, + const char* format, ...) ATTR_FORMAT(printf, 2, 3); + +/** + * call this to initialize logging services. + * @param filename: if NULL stderr is used. + * @param use_syslog: set to true to ignore filename and use syslog(3). + * @param chrootdir: to which directory we have been chrooted, if any. + */ +void log_init(const char* filename, int use_syslog, const char* chrootdir); + +/** + * Set logging to go to the specified file *. + * This setting does not affect the use_syslog setting. + * @param f: to that file, or pass NULL to disable logging. + */ +void log_file(FILE *f); + +/** + * Init a thread (will print this number for the thread log entries). + * Must be called from the thread itself. If not called 0 is printed. + * @param num: number to print for this thread. Owned by caller, must + * continue to exist. + */ +void log_thread_set(int* num); + +/** + * Set identity to print, default is 'unbound'. + * @param id: string to print. Name of executable. + */ +void log_ident_set(const char* id); + +/** + * Set the time value to print in log entries. + * @param t: the point is copied and used to find the time. + * if NULL, time(2) is used. + */ +void log_set_time(time_t* t); + +/** + * Set if the time value is printed ascii or decimal in log entries. + * @param use_asc: if true, ascii is printed, otherwise decimal. + * If the conversion fails or you have no time functions, + * decimal is printed. + */ +void log_set_time_asc(int use_asc); + +/** + * Log informational message. + * Pass printf formatted arguments. No trailing newline is needed. + * @param format: printf-style format string. Arguments follow. + */ +void log_info(const char* format, ...) ATTR_FORMAT(printf, 1, 2); + +/** + * Log error message. + * Pass printf formatted arguments. No trailing newline is needed. + * @param format: printf-style format string. Arguments follow. + */ +void log_err(const char* format, ...) ATTR_FORMAT(printf, 1, 2); + +/** + * Log warning message. + * Pass printf formatted arguments. No trailing newline is needed. + * @param format: printf-style format string. Arguments follow. + */ +void log_warn(const char* format, ...) ATTR_FORMAT(printf, 1, 2); + +/** + * Log a hex-string to the log. Can be any length. + * performs mallocs to do so, slow. But debug useful. + * @param msg: string desc to accompany the hexdump. + * @param data: data to dump in hex format. + * @param length: length of data. + */ +void log_hex(const char* msg, void* data, size_t length); + +/** + * Easy alternative for log_hex, takes a sldns_buffer. + * @param level: verbosity level for this message, compared to global + * verbosity setting. + * @param msg: string desc to print + * @param buf: the buffer. + */ +void log_buf(enum verbosity_value level, const char* msg, struct sldns_buffer* buf); + +/** + * Log fatal error message, and exit the current process. + * Pass printf formatted arguments. No trailing newline is needed. + * @param format: printf-style format string. Arguments follow. + */ +void fatal_exit(const char* format, ...) ATTR_FORMAT(printf, 1, 2); + +/** + * va_list argument version of log_info. + * @param pri: priority type, for example 5 (INFO). + * @param type: string to designate type of message (info, error). + * @param format: the printf style format to print. no newline. + * @param args: arguments for format string. + */ +void log_vmsg(int pri, const char* type, const char* format, va_list args); + +/** + * an assertion that is thrown to the logfile. + */ +#ifdef UNBOUND_DEBUG +# define log_assert(x) \ + do { if(!(x)) \ + fatal_exit("%s:%d: %s: assertion %s failed", \ + __FILE__, __LINE__, __func__, #x); \ + } while(0); +#else +# define log_assert(x) /*nothing*/ +#endif + +#ifdef USE_WINSOCK +/** + * Convert WSA error into string. + * @param err: from WSAGetLastError() + * @return: string. + */ +char* wsa_strerror(DWORD err); +#endif /* USE_WINSOCK */ + +#endif /* UTIL_LOG_H */ diff --git a/external/unbound/util/mini_event.c b/external/unbound/util/mini_event.c new file mode 100644 index 000000000..40dca375a --- /dev/null +++ b/external/unbound/util/mini_event.c @@ -0,0 +1,394 @@ +/* + * mini_event.c - implementation of part of libevent api, portably. + * + * Copyright (c) 2007, NLnet Labs. All rights reserved. + * + * This software is open source. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * Neither the name of the NLNET LABS nor the names of its contributors may + * be used to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +/** + * \file + * fake libevent implementation. Less broad in functionality, and only + * supports select(2). + */ + +#include "config.h" +#ifdef HAVE_TIME_H +#include <time.h> +#endif +#include <sys/time.h> + +#if defined(USE_MINI_EVENT) && !defined(USE_WINSOCK) +#include <signal.h> +#include "util/mini_event.h" +#include "util/fptr_wlist.h" + +/** compare events in tree, based on timevalue, ptr for uniqueness */ +int mini_ev_cmp(const void* a, const void* b) +{ + const struct event *e = (const struct event*)a; + const struct event *f = (const struct event*)b; + if(e->ev_timeout.tv_sec < f->ev_timeout.tv_sec) + return -1; + if(e->ev_timeout.tv_sec > f->ev_timeout.tv_sec) + return 1; + if(e->ev_timeout.tv_usec < f->ev_timeout.tv_usec) + return -1; + if(e->ev_timeout.tv_usec > f->ev_timeout.tv_usec) + return 1; + if(e < f) + return -1; + if(e > f) + return 1; + return 0; +} + +/** set time */ +static int +settime(struct event_base* base) +{ + if(gettimeofday(base->time_tv, NULL) < 0) { + return -1; + } +#ifndef S_SPLINT_S + *base->time_secs = (time_t)base->time_tv->tv_sec; +#endif + return 0; +} + +/** create event base */ +void *event_init(time_t* time_secs, struct timeval* time_tv) +{ + struct event_base* base = (struct event_base*)malloc( + sizeof(struct event_base)); + if(!base) + return NULL; + memset(base, 0, sizeof(*base)); + base->time_secs = time_secs; + base->time_tv = time_tv; + if(settime(base) < 0) { + event_base_free(base); + return NULL; + } + base->times = rbtree_create(mini_ev_cmp); + if(!base->times) { + event_base_free(base); + return NULL; + } + base->capfd = MAX_FDS; +#ifdef FD_SETSIZE + if((int)FD_SETSIZE < base->capfd) + base->capfd = (int)FD_SETSIZE; +#endif + base->fds = (struct event**)calloc((size_t)base->capfd, + sizeof(struct event*)); + if(!base->fds) { + event_base_free(base); + return NULL; + } + base->signals = (struct event**)calloc(MAX_SIG, sizeof(struct event*)); + if(!base->signals) { + event_base_free(base); + return NULL; + } +#ifndef S_SPLINT_S + FD_ZERO(&base->reads); + FD_ZERO(&base->writes); +#endif + return base; +} + +/** get version */ +const char *event_get_version(void) +{ + return "mini-event-"PACKAGE_VERSION; +} + +/** get polling method, select */ +const char *event_get_method(void) +{ + return "select"; +} + +/** call timeouts handlers, and return how long to wait for next one or -1 */ +static void handle_timeouts(struct event_base* base, struct timeval* now, + struct timeval* wait) +{ + struct event* p; +#ifndef S_SPLINT_S + wait->tv_sec = (time_t)-1; +#endif + + while((rbnode_t*)(p = (struct event*)rbtree_first(base->times)) + !=RBTREE_NULL) { +#ifndef S_SPLINT_S + if(p->ev_timeout.tv_sec > now->tv_sec || + (p->ev_timeout.tv_sec==now->tv_sec && + p->ev_timeout.tv_usec > now->tv_usec)) { + /* there is a next larger timeout. wait for it */ + wait->tv_sec = p->ev_timeout.tv_sec - now->tv_sec; + if(now->tv_usec > p->ev_timeout.tv_usec) { + wait->tv_sec--; + wait->tv_usec = 1000000 - (now->tv_usec - + p->ev_timeout.tv_usec); + } else { + wait->tv_usec = p->ev_timeout.tv_usec + - now->tv_usec; + } + return; + } +#endif + /* event times out, remove it */ + (void)rbtree_delete(base->times, p); + p->ev_events &= ~EV_TIMEOUT; + fptr_ok(fptr_whitelist_event(p->ev_callback)); + (*p->ev_callback)(p->ev_fd, EV_TIMEOUT, p->ev_arg); + } +} + +/** call select and callbacks for that */ +static int handle_select(struct event_base* base, struct timeval* wait) +{ + fd_set r, w; + int ret, i; + +#ifndef S_SPLINT_S + if(wait->tv_sec==(time_t)-1) + wait = NULL; +#endif + memmove(&r, &base->reads, sizeof(fd_set)); + memmove(&w, &base->writes, sizeof(fd_set)); + memmove(&base->ready, &base->content, sizeof(fd_set)); + + if((ret = select(base->maxfd+1, &r, &w, NULL, wait)) == -1) { + ret = errno; + if(settime(base) < 0) + return -1; + errno = ret; + if(ret == EAGAIN || ret == EINTR) + return 0; + return -1; + } + if(settime(base) < 0) + return -1; + + for(i=0; i<base->maxfd+1; i++) { + short bits = 0; + if(!base->fds[i] || !(FD_ISSET(i, &base->ready))) { + continue; + } + if(FD_ISSET(i, &r)) { + bits |= EV_READ; + ret--; + } + if(FD_ISSET(i, &w)) { + bits |= EV_WRITE; + ret--; + } + bits &= base->fds[i]->ev_events; + if(bits) { + fptr_ok(fptr_whitelist_event( + base->fds[i]->ev_callback)); + (*base->fds[i]->ev_callback)(base->fds[i]->ev_fd, + bits, base->fds[i]->ev_arg); + if(ret==0) + break; + } + } + return 0; +} + +/** run select in a loop */ +int event_base_dispatch(struct event_base* base) +{ + struct timeval wait; + if(settime(base) < 0) + return -1; + while(!base->need_to_exit) + { + /* see if timeouts need handling */ + handle_timeouts(base, base->time_tv, &wait); + if(base->need_to_exit) + return 0; + /* do select */ + if(handle_select(base, &wait) < 0) { + if(base->need_to_exit) + return 0; + return -1; + } + } + return 0; +} + +/** exit that loop */ +int event_base_loopexit(struct event_base* base, + struct timeval* ATTR_UNUSED(tv)) +{ + base->need_to_exit = 1; + return 0; +} + +/* free event base, free events yourself */ +void event_base_free(struct event_base* base) +{ + if(!base) + return; + if(base->times) + free(base->times); + if(base->fds) + free(base->fds); + if(base->signals) + free(base->signals); + free(base); +} + +/** set content of event */ +void event_set(struct event* ev, int fd, short bits, + void (*cb)(int, short, void *), void* arg) +{ + ev->node.key = ev; + ev->ev_fd = fd; + ev->ev_events = bits; + ev->ev_callback = cb; + fptr_ok(fptr_whitelist_event(ev->ev_callback)); + ev->ev_arg = arg; + ev->added = 0; +} + +/* add event to a base */ +int event_base_set(struct event_base* base, struct event* ev) +{ + ev->ev_base = base; + ev->added = 0; + return 0; +} + +/* add event to make it active, you may not change it with event_set anymore */ +int event_add(struct event* ev, struct timeval* tv) +{ + if(ev->added) + event_del(ev); + if(ev->ev_fd != -1 && ev->ev_fd >= ev->ev_base->capfd) + return -1; + if( (ev->ev_events&(EV_READ|EV_WRITE)) && ev->ev_fd != -1) { + ev->ev_base->fds[ev->ev_fd] = ev; + if(ev->ev_events&EV_READ) { + FD_SET(FD_SET_T ev->ev_fd, &ev->ev_base->reads); + } + if(ev->ev_events&EV_WRITE) { + FD_SET(FD_SET_T ev->ev_fd, &ev->ev_base->writes); + } + FD_SET(FD_SET_T ev->ev_fd, &ev->ev_base->content); + FD_CLR(FD_SET_T ev->ev_fd, &ev->ev_base->ready); + if(ev->ev_fd > ev->ev_base->maxfd) + ev->ev_base->maxfd = ev->ev_fd; + } + if(tv && (ev->ev_events&EV_TIMEOUT)) { +#ifndef S_SPLINT_S + struct timeval *now = ev->ev_base->time_tv; + ev->ev_timeout.tv_sec = tv->tv_sec + now->tv_sec; + ev->ev_timeout.tv_usec = tv->tv_usec + now->tv_usec; + while(ev->ev_timeout.tv_usec > 1000000) { + ev->ev_timeout.tv_usec -= 1000000; + ev->ev_timeout.tv_sec++; + } +#endif + (void)rbtree_insert(ev->ev_base->times, &ev->node); + } + ev->added = 1; + return 0; +} + +/* remove event, you may change it again */ +int event_del(struct event* ev) +{ + if(ev->ev_fd != -1 && ev->ev_fd >= ev->ev_base->capfd) + return -1; + if((ev->ev_events&EV_TIMEOUT)) + (void)rbtree_delete(ev->ev_base->times, &ev->node); + if((ev->ev_events&(EV_READ|EV_WRITE)) && ev->ev_fd != -1) { + ev->ev_base->fds[ev->ev_fd] = NULL; + FD_CLR(FD_SET_T ev->ev_fd, &ev->ev_base->reads); + FD_CLR(FD_SET_T ev->ev_fd, &ev->ev_base->writes); + FD_CLR(FD_SET_T ev->ev_fd, &ev->ev_base->ready); + FD_CLR(FD_SET_T ev->ev_fd, &ev->ev_base->content); + } + ev->added = 0; + return 0; +} + +/** which base gets to handle signals */ +static struct event_base* signal_base = NULL; +/** signal handler */ +static RETSIGTYPE sigh(int sig) +{ + struct event* ev; + if(!signal_base || sig < 0 || sig >= MAX_SIG) + return; + ev = signal_base->signals[sig]; + if(!ev) + return; + fptr_ok(fptr_whitelist_event(ev->ev_callback)); + (*ev->ev_callback)(sig, EV_SIGNAL, ev->ev_arg); +} + +/** install signal handler */ +int signal_add(struct event* ev, struct timeval* ATTR_UNUSED(tv)) +{ + if(ev->ev_fd == -1 || ev->ev_fd >= MAX_SIG) + return -1; + signal_base = ev->ev_base; + ev->ev_base->signals[ev->ev_fd] = ev; + ev->added = 1; + if(signal(ev->ev_fd, sigh) == SIG_ERR) { + return -1; + } + return 0; +} + +/** remove signal handler */ +int signal_del(struct event* ev) +{ + if(ev->ev_fd == -1 || ev->ev_fd >= MAX_SIG) + return -1; + ev->ev_base->signals[ev->ev_fd] = NULL; + ev->added = 0; + return 0; +} + +#else /* USE_MINI_EVENT */ +#ifndef USE_WINSOCK +int mini_ev_cmp(const void* ATTR_UNUSED(a), const void* ATTR_UNUSED(b)) +{ + return 0; +} +#endif /* not USE_WINSOCK */ +#endif /* USE_MINI_EVENT */ diff --git a/external/unbound/util/mini_event.h b/external/unbound/util/mini_event.h new file mode 100644 index 000000000..58bbc8073 --- /dev/null +++ b/external/unbound/util/mini_event.h @@ -0,0 +1,177 @@ +/* + * mini-event.h - micro implementation of libevent api, using select() only. + * + * Copyright (c) 2007, NLnet Labs. All rights reserved. + * + * This software is open source. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * Neither the name of the NLNET LABS nor the names of its contributors may + * be used to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/** + * \file + * This file implements part of the event(3) libevent api. + * The back end is only select. Max number of fds is limited. + * Max number of signals is limited, one handler per signal only. + * And one handler per fd. + * + * Although limited to select() and a max (1024) open fds, it + * is efficient: + * o dispatch call caches fd_sets to use. + * o handler calling takes time ~ to the number of fds. + * o timeouts are stored in a redblack tree, sorted, so take log(n). + * Timeouts are only accurate to the second (no subsecond accuracy). + * To avoid cpu hogging, fractional timeouts are rounded up to a whole second. + */ + +#ifndef MINI_EVENT_H +#define MINI_EVENT_H + +#if defined(USE_MINI_EVENT) && !defined(USE_WINSOCK) + +#ifndef HAVE_EVENT_BASE_FREE +#define HAVE_EVENT_BASE_FREE +#endif + +/** event timeout */ +#define EV_TIMEOUT 0x01 +/** event fd readable */ +#define EV_READ 0x02 +/** event fd writable */ +#define EV_WRITE 0x04 +/** event signal */ +#define EV_SIGNAL 0x08 +/** event must persist */ +#define EV_PERSIST 0x10 + +/* needs our redblack tree */ +#include "rbtree.h" + +/** max number of file descriptors to support */ +#define MAX_FDS 1024 +/** max number of signals to support */ +#define MAX_SIG 32 + +/** event base */ +struct event_base +{ + /** sorted by timeout (absolute), ptr */ + rbtree_t* times; + /** array of 0 - maxfd of ptr to event for it */ + struct event** fds; + /** max fd in use */ + int maxfd; + /** capacity - size of the fds array */ + int capfd; + /* fdset for read write, for fds ready, and added */ + fd_set + /** fds for reading */ + reads, + /** fds for writing */ + writes, + /** fds determined ready for use */ + ready, + /** ready plus newly added events. */ + content; + /** array of 0 - maxsig of ptr to event for it */ + struct event** signals; + /** if we need to exit */ + int need_to_exit; + /** where to store time in seconds */ + time_t* time_secs; + /** where to store time in microseconds */ + struct timeval* time_tv; +}; + +/** + * Event structure. Has some of the event elements. + */ +struct event { + /** node in timeout rbtree */ + rbnode_t node; + /** is event already added */ + int added; + + /** event base it belongs to */ + struct event_base *ev_base; + /** fd to poll or -1 for timeouts. signal number for sigs. */ + int ev_fd; + /** what events this event is interested in, see EV_.. above. */ + short ev_events; + /** timeout value */ + struct timeval ev_timeout; + + /** callback to call: fd, eventbits, userarg */ + void (*ev_callback)(int, short, void *arg); + /** callback user arg */ + void *ev_arg; +}; + +/* function prototypes (some are as they appear in event.h) */ +/** create event base */ +void *event_init(time_t* time_secs, struct timeval* time_tv); +/** get version */ +const char *event_get_version(void); +/** get polling method, select */ +const char *event_get_method(void); +/** run select in a loop */ +int event_base_dispatch(struct event_base *); +/** exit that loop */ +int event_base_loopexit(struct event_base *, struct timeval *); +/** free event base. Free events yourself */ +void event_base_free(struct event_base *); +/** set content of event */ +void event_set(struct event *, int, short, void (*)(int, short, void *), void *); +/** add event to a base. You *must* call this for every event. */ +int event_base_set(struct event_base *, struct event *); +/** add event to make it active. You may not change it with event_set anymore */ +int event_add(struct event *, struct timeval *); +/** remove event. You may change it again */ +int event_del(struct event *); + +/** add a timer */ +#define evtimer_add(ev, tv) event_add(ev, tv) +/** remove a timer */ +#define evtimer_del(ev) event_del(ev) + +/* uses different implementation. Cannot mix fd/timeouts and signals inside + * the same struct event. create several event structs for that. */ +/** install signal handler */ +int signal_add(struct event *, struct timeval *); +/** set signal event contents */ +#define signal_set(ev, x, cb, arg) \ + event_set(ev, x, EV_SIGNAL|EV_PERSIST, cb, arg) +/** remove signal handler */ +int signal_del(struct event *); + +#endif /* USE_MINI_EVENT and not USE_WINSOCK */ + +/** compare events in tree, based on timevalue, ptr for uniqueness */ +int mini_ev_cmp(const void* a, const void* b); + +#endif /* MINI_EVENT_H */ diff --git a/external/unbound/util/module.c b/external/unbound/util/module.c new file mode 100644 index 000000000..09e276c30 --- /dev/null +++ b/external/unbound/util/module.c @@ -0,0 +1,71 @@ +/* + * util/module.c - module interface + * + * Copyright (c) 2007, NLnet Labs. All rights reserved. + * + * This software is open source. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * Neither the name of the NLNET LABS nor the names of its contributors may + * be used to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ +/** + * \file + * Implementation of module.h. + */ + +#include "config.h" +#include "util/module.h" + +const char* +strextstate(enum module_ext_state s) +{ + switch(s) { + case module_state_initial: return "module_state_initial"; + case module_wait_reply: return "module_wait_reply"; + case module_wait_module: return "module_wait_module"; + case module_restart_next: return "module_restart_next"; + case module_wait_subquery: return "module_wait_subquery"; + case module_error: return "module_error"; + case module_finished: return "module_finished"; + } + return "bad_extstate_value"; +} + +const char* +strmodulevent(enum module_ev e) +{ + switch(e) { + case module_event_new: return "module_event_new"; + case module_event_pass: return "module_event_pass"; + case module_event_reply: return "module_event_reply"; + case module_event_noreply: return "module_event_noreply"; + case module_event_capsfail: return "module_event_capsfail"; + case module_event_moddone: return "module_event_moddone"; + case module_event_error: return "module_event_error"; + } + return "bad_event_value"; +} diff --git a/external/unbound/util/module.h b/external/unbound/util/module.h new file mode 100644 index 000000000..f95ff6dc8 --- /dev/null +++ b/external/unbound/util/module.h @@ -0,0 +1,517 @@ +/* + * util/module.h - DNS handling module interface + * + * Copyright (c) 2007, NLnet Labs. All rights reserved. + * + * This software is open source. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * Neither the name of the NLNET LABS nor the names of its contributors may + * be used to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/** + * \file + * + * This file contains the interface for DNS handling modules. + * + * The module interface uses the DNS modules as state machines. The + * state machines are activated in sequence to operate on queries. Once + * they are done, the reply is passed back. In the usual setup the mesh + * is the caller of the state machines and once things are done sends replies + * and invokes result callbacks. + * + * The module provides a number of functions, listed in the module_func_block. + * The module is inited and destroyed and memory usage queries, for the + * module as a whole, for entire-module state (such as a cache). And per-query + * functions are called, operate to move the state machine and cleanup of + * the per-query state. + * + * Most per-query state should simply be allocated in the query region. + * This is destroyed at the end of the query. + * + * The module environment contains services and information and caches + * shared by the modules and the rest of the system. It also contains + * function pointers for module-specific tasks (like sending queries). + * + * *** Example module calls for a normal query + * + * In this example, the query does not need recursion, all the other data + * can be found in the cache. This makes the example shorter. + * + * At the start of the program the iterator module is initialised. + * The iterator module sets up its global state, such as donotquery lists + * and private address trees. + * + * A query comes in, and a mesh entry is created for it. The mesh + * starts the resolution process. The validator module is the first + * in the list of modules, and it is started on this new query. The + * operate() function is called. The validator decides it needs not do + * anything yet until there is a result and returns wait_module, that + * causes the next module in the list to be started. + * + * The next module is the iterator. It is started on the passed query and + * decides to perform a lookup. For this simple example, the delegation + * point information is available, and all the iterator wants to do is + * send a UDP query. The iterator uses env.send_query() to send the + * query. Then the iterator suspends (returns from the operate call). + * + * When the UDP reply comes back (and on errors and timeouts), the + * operate function is called for the query, on the iterator module, + * with the event that there is a reply. The iterator decides that this + * is enough, the work is done. It returns the value finished from the + * operate call, which causes the previous module to be started. + * + * The previous module, the validator module, is started with the event + * that the iterator module is done. The validator decides to validate + * the query. Once it is done (which could take recursive lookups, but + * in this example no recursive lookups are needed), it returns from the + * operate function with finished. + * + * There is no previous module from the validator module, and the mesh + * takes this to mean that the query is finally done. The mesh invokes + * callbacks and sends packets to queriers. + * + * If other modules had been waiting (recursively) on the answer to this + * query, then the mesh will tell them about it. It calls the inform_super + * routine on all the waiting modules, and once that is done it calls all of + * them with the operate() call. During inform_super the query that is done + * still exists and information can be copied from it (but the module should + * not really re-entry codepoints and services). During the operate call + * the modules can use stored state to continue operation with the results. + * (network buffers are used to contain the answer packet during the + * inform_super phase, but after that the network buffers will be cleared + * of their contents so that other tasks can be performed). + * + * *** Example module calls for recursion + * + * A module is called in operate, and it decides that it wants to perform + * recursion. That is, it wants the full state-machine-list to operate on + * a different query. It calls env.attach_sub() to create a new query state. + * The routine returns the newly created state, and potentially the module + * can edit the module-states for the newly created query (i.e. pass along + * some information, like delegation points). The module then suspends, + * returns from the operate routine. + * + * The mesh meanwhile will have the newly created query (or queries) on + * a waiting list, and will call operate() on this query (or queries). + * It starts again at the start of the module list for them. The query + * (or queries) continue to operate their state machines, until they are + * done. When they are done the mesh calls inform_super on the module that + * wanted the recursion. After that the mesh calls operate() on the module + * that wanted to do the recursion, and during this phase the module could, + * for example, decide to create more recursions. + * + * If the module decides it no longer wants the recursive information + * it can call detach_subs. Those queries will still run to completion, + * potentially filling the cache with information. Inform_super is not + * called any more. + * + * The iterator module will fetch items from the cache, so a recursion + * attempt may complete very quickly if the item is in cache. The calling + * module has to wait for completion or eventual timeout. A recursive query + * that times out returns a servfail rcode (servfail is also returned for + * other errors during the lookup). + * + * Results are passed in the qstate, the rcode member is used to pass + * errors without requiring memory allocation, so that the code can continue + * in out-of-memory conditions. If the rcode member is 0 (NOERROR) then + * the dns_msg entry contains a filled out message. This message may + * also contain an rcode that is nonzero, but in this case additional + * information (query, additional) can be passed along. + * + * The rcode and dns_msg are used to pass the result from the the rightmost + * module towards the leftmost modules and then towards the user. + * + * If you want to avoid recursion-cycles where queries need other queries + * that need the first one, use detect_cycle() to see if that will happen. + * + */ + +#ifndef UTIL_MODULE_H +#define UTIL_MODULE_H +#include "util/storage/lruhash.h" +#include "util/data/msgreply.h" +#include "util/data/msgparse.h" +struct sldns_buffer; +struct alloc_cache; +struct rrset_cache; +struct key_cache; +struct config_file; +struct slabhash; +struct query_info; +struct edns_data; +struct regional; +struct worker; +struct module_qstate; +struct ub_randstate; +struct mesh_area; +struct mesh_state; +struct val_anchors; +struct val_neg_cache; +struct iter_forwards; +struct iter_hints; + +/** Maximum number of modules in operation */ +#define MAX_MODULE 5 + +/** + * Module environment. + * Services and data provided to the module. + */ +struct module_env { + /* --- data --- */ + /** config file with config options */ + struct config_file* cfg; + /** shared message cache */ + struct slabhash* msg_cache; + /** shared rrset cache */ + struct rrset_cache* rrset_cache; + /** shared infrastructure cache (edns, lameness) */ + struct infra_cache* infra_cache; + /** shared key cache */ + struct key_cache* key_cache; + + /* --- services --- */ + /** + * Send serviced DNS query to server. UDP/TCP and EDNS is handled. + * operate() should return with wait_reply. Later on a callback + * will cause operate() to be called with event timeout or reply. + * The time until a timeout is calculated from roundtrip timing, + * several UDP retries are attempted. + * @param qname: query name. (host order) + * @param qnamelen: length in bytes of qname, including trailing 0. + * @param qtype: query type. (host order) + * @param qclass: query class. (host order) + * @param flags: host order flags word, with opcode and CD bit. + * @param dnssec: if set, EDNS record will have bits set. + * If EDNS_DO bit is set, DO bit is set in EDNS records. + * If BIT_CD is set, CD bit is set in queries with EDNS records. + * @param want_dnssec: if set, the validator wants DNSSEC. Without + * EDNS, the answer is likely to be useless for this domain. + * @param nocaps: do not use caps_for_id, use the qname as given. + * (ignored if caps_for_id is disabled). + * @param addr: where to. + * @param addrlen: length of addr. + * @param zone: delegation point name. + * @param zonelen: length of zone name. + * @param q: wich query state to reactivate upon return. + * @return: false on failure (memory or socket related). no query was + * sent. Or returns an outbound entry with qsent and qstate set. + * This outbound_entry will be used on later module invocations + * that involve this query (timeout, error or reply). + */ + struct outbound_entry* (*send_query)(uint8_t* qname, size_t qnamelen, + uint16_t qtype, uint16_t qclass, uint16_t flags, int dnssec, + int want_dnssec, int nocaps, struct sockaddr_storage* addr, + socklen_t addrlen, uint8_t* zone, size_t zonelen, + struct module_qstate* q); + + /** + * Detach-subqueries. + * Remove all sub-query references from this query state. + * Keeps super-references of those sub-queries correct. + * Updates stat items in mesh_area structure. + * @param qstate: used to find mesh state. + */ + void (*detach_subs)(struct module_qstate* qstate); + + /** + * Attach subquery. + * Creates it if it does not exist already. + * Keeps sub and super references correct. + * Updates stat items in mesh_area structure. + * Pass if it is priming query or not. + * return: + * o if error (malloc) happened. + * o need to initialise the new state (module init; it is a new state). + * so that the next run of the query with this module is successful. + * o no init needed, attachment successful. + * + * @param qstate: the state to find mesh state, and that wants to + * receive the results from the new subquery. + * @param qinfo: what to query for (copied). + * @param qflags: what flags to use (RD, CD flag or not). + * @param prime: if it is a (stub) priming query. + * @param newq: If the new subquery needs initialisation, it is + * returned, otherwise NULL is returned. + * @return: false on error, true if success (and init may be needed). + */ + int (*attach_sub)(struct module_qstate* qstate, + struct query_info* qinfo, uint16_t qflags, int prime, + struct module_qstate** newq); + + /** + * Kill newly attached sub. If attach_sub returns newq for + * initialisation, but that fails, then this routine will cleanup and + * delete the fresly created sub. + * @param newq: the new subquery that is no longer needed. + * It is removed. + */ + void (*kill_sub)(struct module_qstate* newq); + + /** + * Detect if adding a dependency for qstate on name,type,class will + * create a dependency cycle. + * @param qstate: given mesh querystate. + * @param qinfo: query info for dependency. + * @param flags: query flags of dependency, RD/CD flags. + * @param prime: if dependency is a priming query or not. + * @return true if the name,type,class exists and the given + * qstate mesh exists as a dependency of that name. Thus + * if qstate becomes dependent on name,type,class then a + * cycle is created. + */ + int (*detect_cycle)(struct module_qstate* qstate, + struct query_info* qinfo, uint16_t flags, int prime); + + /** region for temporary usage. May be cleared after operate() call. */ + struct regional* scratch; + /** buffer for temporary usage. May be cleared after operate() call. */ + struct sldns_buffer* scratch_buffer; + /** internal data for daemon - worker thread. */ + struct worker* worker; + /** mesh area with query state dependencies */ + struct mesh_area* mesh; + /** allocation service */ + struct alloc_cache* alloc; + /** random table to generate random numbers */ + struct ub_randstate* rnd; + /** time in seconds, converted to integer */ + time_t* now; + /** time in microseconds. Relatively recent. */ + struct timeval* now_tv; + /** is validation required for messages, controls client-facing + * validation status (AD bits) and servfails */ + int need_to_validate; + /** trusted key storage; these are the configured keys, if not NULL, + * otherwise configured by validator. These are the trust anchors, + * and are not primed and ready for validation, but on the bright + * side, they are read only memory, thus no locks and fast. */ + struct val_anchors* anchors; + /** negative cache, configured by the validator. if not NULL, + * contains NSEC record lookup trees. */ + struct val_neg_cache* neg_cache; + /** the 5011-probe timer (if any) */ + struct comm_timer* probe_timer; + /** Mapping of forwarding zones to targets. + * iterator forwarder information. per-thread, created by worker */ + struct iter_forwards* fwds; + /** + * iterator forwarder information. per-thread, created by worker. + * The hints -- these aren't stored in the cache because they don't + * expire. The hints are always used to "prime" the cache. Note + * that both root hints and stub zone "hints" are stored in this + * data structure. + */ + struct iter_hints* hints; + /** module specific data. indexed by module id. */ + void* modinfo[MAX_MODULE]; +}; + +/** + * External visible states of the module state machine + * Modules may also have an internal state. + * Modules are supposed to run to completion or until blocked. + */ +enum module_ext_state { + /** initial state - new query */ + module_state_initial = 0, + /** waiting for reply to outgoing network query */ + module_wait_reply, + /** module is waiting for another module */ + module_wait_module, + /** module is waiting for another module; that other is restarted */ + module_restart_next, + /** module is waiting for sub-query */ + module_wait_subquery, + /** module could not finish the query */ + module_error, + /** module is finished with query */ + module_finished +}; + +/** + * Events that happen to modules, that start or wakeup modules. + */ +enum module_ev { + /** new query */ + module_event_new = 0, + /** query passed by other module */ + module_event_pass, + /** reply inbound from server */ + module_event_reply, + /** no reply, timeout or other error */ + module_event_noreply, + /** reply is there, but capitalisation check failed */ + module_event_capsfail, + /** next module is done, and its reply is awaiting you */ + module_event_moddone, + /** error */ + module_event_error +}; + +/** + * Linked list of sockaddrs + * May be allocated such that only 'len' bytes of addr exist for the structure. + */ +struct sock_list { + /** next in list */ + struct sock_list* next; + /** length of addr */ + socklen_t len; + /** sockaddr */ + struct sockaddr_storage addr; +}; + +/** + * Module state, per query. + */ +struct module_qstate { + /** which query is being answered: name, type, class */ + struct query_info qinfo; + /** flags uint16 from query */ + uint16_t query_flags; + /** if this is a (stub or root) priming query (with hints) */ + int is_priming; + + /** comm_reply contains server replies */ + struct comm_reply* reply; + /** the reply message, with message for client and calling module */ + struct dns_msg* return_msg; + /** the rcode, in case of error, instead of a reply message */ + int return_rcode; + /** origin of the reply (can be NULL from cache, list for cnames) */ + struct sock_list* reply_origin; + /** IP blacklist for queries */ + struct sock_list* blacklist; + /** region for this query. Cleared when query process finishes. */ + struct regional* region; + /** failure reason information if val-log-level is high */ + struct config_strlist* errinf; + + /** which module is executing */ + int curmod; + /** module states */ + enum module_ext_state ext_state[MAX_MODULE]; + /** module specific data for query. indexed by module id. */ + void* minfo[MAX_MODULE]; + /** environment for this query */ + struct module_env* env; + /** mesh related information for this query */ + struct mesh_state* mesh_info; + /** how many seconds before expiry is this prefetched (0 if not) */ + time_t prefetch_leeway; +}; + +/** + * Module functionality block + */ +struct module_func_block { + /** text string name of module */ + const char* name; + + /** + * init the module. Called once for the global state. + * This is the place to apply settings from the config file. + * @param env: module environment. + * @param id: module id number. + * return: 0 on error + */ + int (*init)(struct module_env* env, int id); + + /** + * de-init, delete, the module. Called once for the global state. + * @param env: module environment. + * @param id: module id number. + */ + void (*deinit)(struct module_env* env, int id); + + /** + * accept a new query, or work further on existing query. + * Changes the qstate->ext_state to be correct on exit. + * @param ev: event that causes the module state machine to + * (re-)activate. + * @param qstate: the query state. + * Note that this method is not allowed to change the + * query state 'identity', that is query info, qflags, + * and priming status. + * Attach a subquery to get results to a different query. + * @param id: module id number that operate() is called on. + * @param outbound: if not NULL this event is due to the reply/timeout + * or error on this outbound query. + * @return: if at exit the ext_state is: + * o wait_module: next module is started. (with pass event). + * o error or finished: previous module is resumed. + * o otherwise it waits until that event happens (assumes + * the service routine to make subrequest or send message + * have been called. + */ + void (*operate)(struct module_qstate* qstate, enum module_ev event, + int id, struct outbound_entry* outbound); + + /** + * inform super querystate about the results from this subquerystate. + * Is called when the querystate is finished. The method invoked is + * the one from the current module active in the super querystate. + * @param qstate: the query state that is finished. + * Examine return_rcode and return_reply in the qstate. + * @param id: module id for this module. + * This coincides with the current module for the super qstate. + * @param super: the super querystate that needs to be informed. + */ + void (*inform_super)(struct module_qstate* qstate, int id, + struct module_qstate* super); + + /** + * clear module specific data + */ + void (*clear)(struct module_qstate* qstate, int id); + + /** + * How much memory is the module specific data using. + * @param env: module environment. + * @param id: the module id. + * @return the number of bytes that are alloced. + */ + size_t (*get_mem)(struct module_env* env, int id); +}; + +/** + * Debug utility: module external qstate to string + * @param s: the state value. + * @return descriptive string. + */ +const char* strextstate(enum module_ext_state s); + +/** + * Debug utility: module event to string + * @param e: the module event value. + * @return descriptive string. + */ +const char* strmodulevent(enum module_ev e); + +#endif /* UTIL_MODULE_H */ diff --git a/external/unbound/util/net_help.c b/external/unbound/util/net_help.c new file mode 100644 index 000000000..30d543e00 --- /dev/null +++ b/external/unbound/util/net_help.c @@ -0,0 +1,804 @@ +/* + * util/net_help.c - implementation of the network helper code + * + * Copyright (c) 2007, NLnet Labs. All rights reserved. + * + * This software is open source. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * Neither the name of the NLNET LABS nor the names of its contributors may + * be used to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ +/** + * \file + * Implementation of net_help.h. + */ + +#include "config.h" +#include "util/net_help.h" +#include "util/log.h" +#include "util/data/dname.h" +#include "util/module.h" +#include "util/regional.h" +#include "ldns/parseutil.h" +#include "ldns/wire2str.h" +#include <fcntl.h> +#ifdef HAVE_OPENSSL_SSL_H +#include <openssl/ssl.h> +#endif +#ifdef HAVE_OPENSSL_ERR_H +#include <openssl/err.h> +#endif + +/** max length of an IP address (the address portion) that we allow */ +#define MAX_ADDR_STRLEN 128 /* characters */ +/** default value for EDNS ADVERTISED size */ +uint16_t EDNS_ADVERTISED_SIZE = 4096; + +/** minimal responses when positive answer: default is no */ +int MINIMAL_RESPONSES = 0; + +/** rrset order roundrobin: default is no */ +int RRSET_ROUNDROBIN = 0; + +/* returns true is string addr is an ip6 specced address */ +int +str_is_ip6(const char* str) +{ + if(strchr(str, ':')) + return 1; + else return 0; +} + +int +fd_set_nonblock(int s) +{ +#ifdef HAVE_FCNTL + int flag; + if((flag = fcntl(s, F_GETFL)) == -1) { + log_err("can't fcntl F_GETFL: %s", strerror(errno)); + flag = 0; + } + flag |= O_NONBLOCK; + if(fcntl(s, F_SETFL, flag) == -1) { + log_err("can't fcntl F_SETFL: %s", strerror(errno)); + return 0; + } +#elif defined(HAVE_IOCTLSOCKET) + unsigned long on = 1; + if(ioctlsocket(s, FIONBIO, &on) != 0) { + log_err("can't ioctlsocket FIONBIO on: %s", + wsa_strerror(WSAGetLastError())); + } +#endif + return 1; +} + +int +fd_set_block(int s) +{ +#ifdef HAVE_FCNTL + int flag; + if((flag = fcntl(s, F_GETFL)) == -1) { + log_err("cannot fcntl F_GETFL: %s", strerror(errno)); + flag = 0; + } + flag &= ~O_NONBLOCK; + if(fcntl(s, F_SETFL, flag) == -1) { + log_err("cannot fcntl F_SETFL: %s", strerror(errno)); + return 0; + } +#elif defined(HAVE_IOCTLSOCKET) + unsigned long off = 0; + if(ioctlsocket(s, FIONBIO, &off) != 0) { + log_err("can't ioctlsocket FIONBIO off: %s", + wsa_strerror(WSAGetLastError())); + } +#endif + return 1; +} + +int +is_pow2(size_t num) +{ + if(num == 0) return 1; + return (num & (num-1)) == 0; +} + +void* +memdup(void* data, size_t len) +{ + void* d; + if(!data) return NULL; + if(len == 0) return NULL; + d = malloc(len); + if(!d) return NULL; + memcpy(d, data, len); + return d; +} + +void +log_addr(enum verbosity_value v, const char* str, + struct sockaddr_storage* addr, socklen_t addrlen) +{ + uint16_t port; + const char* family = "unknown"; + char dest[100]; + int af = (int)((struct sockaddr_in*)addr)->sin_family; + void* sinaddr = &((struct sockaddr_in*)addr)->sin_addr; + if(verbosity < v) + return; + switch(af) { + case AF_INET: family="ip4"; break; + case AF_INET6: family="ip6"; + sinaddr = &((struct sockaddr_in6*)addr)->sin6_addr; + break; + case AF_UNIX: family="unix"; break; + default: break; + } + if(inet_ntop(af, sinaddr, dest, (socklen_t)sizeof(dest)) == 0) { + (void)strlcpy(dest, "(inet_ntop error)", sizeof(dest)); + } + dest[sizeof(dest)-1] = 0; + port = ntohs(((struct sockaddr_in*)addr)->sin_port); + if(verbosity >= 4) + verbose(v, "%s %s %s port %d (len %d)", str, family, dest, + (int)port, (int)addrlen); + else verbose(v, "%s %s port %d", str, dest, (int)port); +} + +int +extstrtoaddr(const char* str, struct sockaddr_storage* addr, + socklen_t* addrlen) +{ + char* s; + int port = UNBOUND_DNS_PORT; + if((s=strchr(str, '@'))) { + char buf[MAX_ADDR_STRLEN]; + if(s-str >= MAX_ADDR_STRLEN) { + return 0; + } + (void)strlcpy(buf, str, sizeof(buf)); + buf[s-str] = 0; + port = atoi(s+1); + if(port == 0 && strcmp(s+1,"0")!=0) { + return 0; + } + return ipstrtoaddr(buf, port, addr, addrlen); + } + return ipstrtoaddr(str, port, addr, addrlen); +} + + +int +ipstrtoaddr(const char* ip, int port, struct sockaddr_storage* addr, + socklen_t* addrlen) +{ + uint16_t p; + if(!ip) return 0; + p = (uint16_t) port; + if(str_is_ip6(ip)) { + char buf[MAX_ADDR_STRLEN]; + char* s; + struct sockaddr_in6* sa = (struct sockaddr_in6*)addr; + *addrlen = (socklen_t)sizeof(struct sockaddr_in6); + memset(sa, 0, *addrlen); + sa->sin6_family = AF_INET6; + sa->sin6_port = (in_port_t)htons(p); + if((s=strchr(ip, '%'))) { /* ip6%interface, rfc 4007 */ + if(s-ip >= MAX_ADDR_STRLEN) + return 0; + (void)strlcpy(buf, ip, sizeof(buf)); + buf[s-ip]=0; + sa->sin6_scope_id = (uint32_t)atoi(s+1); + ip = buf; + } + if(inet_pton((int)sa->sin6_family, ip, &sa->sin6_addr) <= 0) { + return 0; + } + } else { /* ip4 */ + struct sockaddr_in* sa = (struct sockaddr_in*)addr; + *addrlen = (socklen_t)sizeof(struct sockaddr_in); + memset(sa, 0, *addrlen); + sa->sin_family = AF_INET; + sa->sin_port = (in_port_t)htons(p); + if(inet_pton((int)sa->sin_family, ip, &sa->sin_addr) <= 0) { + return 0; + } + } + return 1; +} + +int netblockstrtoaddr(const char* str, int port, struct sockaddr_storage* addr, + socklen_t* addrlen, int* net) +{ + char* s = NULL; + *net = (str_is_ip6(str)?128:32); + if((s=strchr(str, '/'))) { + if(atoi(s+1) > *net) { + log_err("netblock too large: %s", str); + return 0; + } + *net = atoi(s+1); + if(*net == 0 && strcmp(s+1, "0") != 0) { + log_err("cannot parse netblock: '%s'", str); + return 0; + } + if(!(s = strdup(str))) { + log_err("out of memory"); + return 0; + } + *strchr(s, '/') = '\0'; + } + if(!ipstrtoaddr(s?s:str, port, addr, addrlen)) { + free(s); + log_err("cannot parse ip address: '%s'", str); + return 0; + } + if(s) { + free(s); + addr_mask(addr, *addrlen, *net); + } + return 1; +} + +void +log_nametypeclass(enum verbosity_value v, const char* str, uint8_t* name, + uint16_t type, uint16_t dclass) +{ + char buf[LDNS_MAX_DOMAINLEN+1]; + char t[12], c[12]; + const char *ts, *cs; + if(verbosity < v) + return; + dname_str(name, buf); + if(type == LDNS_RR_TYPE_TSIG) ts = "TSIG"; + else if(type == LDNS_RR_TYPE_IXFR) ts = "IXFR"; + else if(type == LDNS_RR_TYPE_AXFR) ts = "AXFR"; + else if(type == LDNS_RR_TYPE_MAILB) ts = "MAILB"; + else if(type == LDNS_RR_TYPE_MAILA) ts = "MAILA"; + else if(type == LDNS_RR_TYPE_ANY) ts = "ANY"; + else if(sldns_rr_descript(type) && sldns_rr_descript(type)->_name) + ts = sldns_rr_descript(type)->_name; + else { + snprintf(t, sizeof(t), "TYPE%d", (int)type); + ts = t; + } + if(sldns_lookup_by_id(sldns_rr_classes, (int)dclass) && + sldns_lookup_by_id(sldns_rr_classes, (int)dclass)->name) + cs = sldns_lookup_by_id(sldns_rr_classes, (int)dclass)->name; + else { + snprintf(c, sizeof(c), "CLASS%d", (int)dclass); + cs = c; + } + log_info("%s %s %s %s", str, buf, ts, cs); +} + +void log_name_addr(enum verbosity_value v, const char* str, uint8_t* zone, + struct sockaddr_storage* addr, socklen_t addrlen) +{ + uint16_t port; + const char* family = "unknown_family "; + char namebuf[LDNS_MAX_DOMAINLEN+1]; + char dest[100]; + int af = (int)((struct sockaddr_in*)addr)->sin_family; + void* sinaddr = &((struct sockaddr_in*)addr)->sin_addr; + if(verbosity < v) + return; + switch(af) { + case AF_INET: family=""; break; + case AF_INET6: family=""; + sinaddr = &((struct sockaddr_in6*)addr)->sin6_addr; + break; + case AF_UNIX: family="unix_family "; break; + default: break; + } + if(inet_ntop(af, sinaddr, dest, (socklen_t)sizeof(dest)) == 0) { + (void)strlcpy(dest, "(inet_ntop error)", sizeof(dest)); + } + dest[sizeof(dest)-1] = 0; + port = ntohs(((struct sockaddr_in*)addr)->sin_port); + dname_str(zone, namebuf); + if(af != AF_INET && af != AF_INET6) + verbose(v, "%s <%s> %s%s#%d (addrlen %d)", + str, namebuf, family, dest, (int)port, (int)addrlen); + else verbose(v, "%s <%s> %s%s#%d", + str, namebuf, family, dest, (int)port); +} + +void log_err_addr(const char* str, const char* err, + struct sockaddr_storage* addr, socklen_t addrlen) +{ + uint16_t port; + char dest[100]; + int af = (int)((struct sockaddr_in*)addr)->sin_family; + void* sinaddr = &((struct sockaddr_in*)addr)->sin_addr; + if(af == AF_INET6) + sinaddr = &((struct sockaddr_in6*)addr)->sin6_addr; + if(inet_ntop(af, sinaddr, dest, (socklen_t)sizeof(dest)) == 0) { + (void)strlcpy(dest, "(inet_ntop error)", sizeof(dest)); + } + dest[sizeof(dest)-1] = 0; + port = ntohs(((struct sockaddr_in*)addr)->sin_port); + if(verbosity >= 4) + log_err("%s: %s for %s port %d (len %d)", str, err, dest, + (int)port, (int)addrlen); + else log_err("%s: %s for %s", str, err, dest); +} + +int +sockaddr_cmp(struct sockaddr_storage* addr1, socklen_t len1, + struct sockaddr_storage* addr2, socklen_t len2) +{ + struct sockaddr_in* p1_in = (struct sockaddr_in*)addr1; + struct sockaddr_in* p2_in = (struct sockaddr_in*)addr2; + struct sockaddr_in6* p1_in6 = (struct sockaddr_in6*)addr1; + struct sockaddr_in6* p2_in6 = (struct sockaddr_in6*)addr2; + if(len1 < len2) + return -1; + if(len1 > len2) + return 1; + log_assert(len1 == len2); + if( p1_in->sin_family < p2_in->sin_family) + return -1; + if( p1_in->sin_family > p2_in->sin_family) + return 1; + log_assert( p1_in->sin_family == p2_in->sin_family ); + /* compare ip4 */ + if( p1_in->sin_family == AF_INET ) { + /* just order it, ntohs not required */ + if(p1_in->sin_port < p2_in->sin_port) + return -1; + if(p1_in->sin_port > p2_in->sin_port) + return 1; + log_assert(p1_in->sin_port == p2_in->sin_port); + return memcmp(&p1_in->sin_addr, &p2_in->sin_addr, INET_SIZE); + } else if (p1_in6->sin6_family == AF_INET6) { + /* just order it, ntohs not required */ + if(p1_in6->sin6_port < p2_in6->sin6_port) + return -1; + if(p1_in6->sin6_port > p2_in6->sin6_port) + return 1; + log_assert(p1_in6->sin6_port == p2_in6->sin6_port); + return memcmp(&p1_in6->sin6_addr, &p2_in6->sin6_addr, + INET6_SIZE); + } else { + /* eek unknown type, perform this comparison for sanity. */ + return memcmp(addr1, addr2, len1); + } +} + +int +sockaddr_cmp_addr(struct sockaddr_storage* addr1, socklen_t len1, + struct sockaddr_storage* addr2, socklen_t len2) +{ + struct sockaddr_in* p1_in = (struct sockaddr_in*)addr1; + struct sockaddr_in* p2_in = (struct sockaddr_in*)addr2; + struct sockaddr_in6* p1_in6 = (struct sockaddr_in6*)addr1; + struct sockaddr_in6* p2_in6 = (struct sockaddr_in6*)addr2; + if(len1 < len2) + return -1; + if(len1 > len2) + return 1; + log_assert(len1 == len2); + if( p1_in->sin_family < p2_in->sin_family) + return -1; + if( p1_in->sin_family > p2_in->sin_family) + return 1; + log_assert( p1_in->sin_family == p2_in->sin_family ); + /* compare ip4 */ + if( p1_in->sin_family == AF_INET ) { + return memcmp(&p1_in->sin_addr, &p2_in->sin_addr, INET_SIZE); + } else if (p1_in6->sin6_family == AF_INET6) { + return memcmp(&p1_in6->sin6_addr, &p2_in6->sin6_addr, + INET6_SIZE); + } else { + /* eek unknown type, perform this comparison for sanity. */ + return memcmp(addr1, addr2, len1); + } +} + +int +addr_is_ip6(struct sockaddr_storage* addr, socklen_t len) +{ + if(len == (socklen_t)sizeof(struct sockaddr_in6) && + ((struct sockaddr_in6*)addr)->sin6_family == AF_INET6) + return 1; + else return 0; +} + +void +addr_mask(struct sockaddr_storage* addr, socklen_t len, int net) +{ + uint8_t mask[8] = {0x0, 0x80, 0xc0, 0xe0, 0xf0, 0xf8, 0xfc, 0xfe}; + int i, max; + uint8_t* s; + if(addr_is_ip6(addr, len)) { + s = (uint8_t*)&((struct sockaddr_in6*)addr)->sin6_addr; + max = 128; + } else { + s = (uint8_t*)&((struct sockaddr_in*)addr)->sin_addr; + max = 32; + } + if(net >= max) + return; + for(i=net/8+1; i<max/8; i++) { + s[i] = 0; + } + s[net/8] &= mask[net&0x7]; +} + +int +addr_in_common(struct sockaddr_storage* addr1, int net1, + struct sockaddr_storage* addr2, int net2, socklen_t addrlen) +{ + int min = (net1<net2)?net1:net2; + int i, to; + int match = 0; + uint8_t* s1, *s2; + if(addr_is_ip6(addr1, addrlen)) { + s1 = (uint8_t*)&((struct sockaddr_in6*)addr1)->sin6_addr; + s2 = (uint8_t*)&((struct sockaddr_in6*)addr2)->sin6_addr; + to = 16; + } else { + s1 = (uint8_t*)&((struct sockaddr_in*)addr1)->sin_addr; + s2 = (uint8_t*)&((struct sockaddr_in*)addr2)->sin_addr; + to = 4; + } + /* match = bits_in_common(s1, s2, to); */ + for(i=0; i<to; i++) { + if(s1[i] == s2[i]) { + match += 8; + } else { + uint8_t z = s1[i]^s2[i]; + log_assert(z); + while(!(z&0x80)) { + match++; + z<<=1; + } + break; + } + } + if(match > min) match = min; + return match; +} + +void +addr_to_str(struct sockaddr_storage* addr, socklen_t addrlen, + char* buf, size_t len) +{ + int af = (int)((struct sockaddr_in*)addr)->sin_family; + void* sinaddr = &((struct sockaddr_in*)addr)->sin_addr; + if(addr_is_ip6(addr, addrlen)) + sinaddr = &((struct sockaddr_in6*)addr)->sin6_addr; + if(inet_ntop(af, sinaddr, buf, (socklen_t)len) == 0) { + snprintf(buf, len, "(inet_ntop_error)"); + } +} + +int +addr_is_ip4mapped(struct sockaddr_storage* addr, socklen_t addrlen) +{ + /* prefix for ipv4 into ipv6 mapping is ::ffff:x.x.x.x */ + const uint8_t map_prefix[16] = + {0,0,0,0, 0,0,0,0, 0,0,0xff,0xff, 0,0,0,0}; + uint8_t* s; + if(!addr_is_ip6(addr, addrlen)) + return 0; + /* s is 16 octet ipv6 address string */ + s = (uint8_t*)&((struct sockaddr_in6*)addr)->sin6_addr; + return (memcmp(s, map_prefix, 12) == 0); +} + +int addr_is_broadcast(struct sockaddr_storage* addr, socklen_t addrlen) +{ + int af = (int)((struct sockaddr_in*)addr)->sin_family; + void* sinaddr = &((struct sockaddr_in*)addr)->sin_addr; + return af == AF_INET && addrlen>=(socklen_t)sizeof(struct sockaddr_in) + && memcmp(sinaddr, "\377\377\377\377", 4) == 0; +} + +int addr_is_any(struct sockaddr_storage* addr, socklen_t addrlen) +{ + int af = (int)((struct sockaddr_in*)addr)->sin_family; + void* sinaddr = &((struct sockaddr_in*)addr)->sin_addr; + void* sin6addr = &((struct sockaddr_in6*)addr)->sin6_addr; + if(af == AF_INET && addrlen>=(socklen_t)sizeof(struct sockaddr_in) + && memcmp(sinaddr, "\000\000\000\000", 4) == 0) + return 1; + else if(af==AF_INET6 && addrlen>=(socklen_t)sizeof(struct sockaddr_in6) + && memcmp(sin6addr, "\000\000\000\000\000\000\000\000" + "\000\000\000\000\000\000\000\000", 16) == 0) + return 1; + return 0; +} + +void sock_list_insert(struct sock_list** list, struct sockaddr_storage* addr, + socklen_t len, struct regional* region) +{ + struct sock_list* add = (struct sock_list*)regional_alloc(region, + sizeof(*add) - sizeof(add->addr) + (size_t)len); + if(!add) { + log_err("out of memory in socketlist insert"); + return; + } + log_assert(list); + add->next = *list; + add->len = len; + *list = add; + if(len) memmove(&add->addr, addr, len); +} + +void sock_list_prepend(struct sock_list** list, struct sock_list* add) +{ + struct sock_list* last = add; + if(!last) + return; + while(last->next) + last = last->next; + last->next = *list; + *list = add; +} + +int sock_list_find(struct sock_list* list, struct sockaddr_storage* addr, + socklen_t len) +{ + while(list) { + if(len == list->len) { + if(len == 0 || sockaddr_cmp_addr(addr, len, + &list->addr, list->len) == 0) + return 1; + } + list = list->next; + } + return 0; +} + +void sock_list_merge(struct sock_list** list, struct regional* region, + struct sock_list* add) +{ + struct sock_list* p; + for(p=add; p; p=p->next) { + if(!sock_list_find(*list, &p->addr, p->len)) + sock_list_insert(list, &p->addr, p->len, region); + } +} + +void +log_crypto_err(const char* str) +{ +#ifdef HAVE_SSL + /* error:[error code]:[library name]:[function name]:[reason string] */ + char buf[128]; + unsigned long e; + ERR_error_string_n(ERR_get_error(), buf, sizeof(buf)); + log_err("%s crypto %s", str, buf); + while( (e=ERR_get_error()) ) { + ERR_error_string_n(e, buf, sizeof(buf)); + log_err("and additionally crypto %s", buf); + } +#else + (void)str; +#endif /* HAVE_SSL */ +} + +void* listen_sslctx_create(char* key, char* pem, char* verifypem) +{ +#ifdef HAVE_SSL + SSL_CTX* ctx = SSL_CTX_new(SSLv23_server_method()); + if(!ctx) { + log_crypto_err("could not SSL_CTX_new"); + return NULL; + } + /* no SSLv2 because has defects */ + if(!(SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) & SSL_OP_NO_SSLv2)){ + log_crypto_err("could not set SSL_OP_NO_SSLv2"); + SSL_CTX_free(ctx); + return NULL; + } + if(!SSL_CTX_use_certificate_file(ctx, pem, SSL_FILETYPE_PEM)) { + log_err("error for cert file: %s", pem); + log_crypto_err("error in SSL_CTX use_certificate_file"); + SSL_CTX_free(ctx); + return NULL; + } + if(!SSL_CTX_use_PrivateKey_file(ctx, key, SSL_FILETYPE_PEM)) { + log_err("error for private key file: %s", key); + log_crypto_err("Error in SSL_CTX use_PrivateKey_file"); + SSL_CTX_free(ctx); + return NULL; + } + if(!SSL_CTX_check_private_key(ctx)) { + log_err("error for key file: %s", key); + log_crypto_err("Error in SSL_CTX check_private_key"); + SSL_CTX_free(ctx); + return NULL; + } + + if(verifypem && verifypem[0]) { + if(!SSL_CTX_load_verify_locations(ctx, verifypem, NULL)) { + log_crypto_err("Error in SSL_CTX verify locations"); + SSL_CTX_free(ctx); + return NULL; + } + SSL_CTX_set_client_CA_list(ctx, SSL_load_client_CA_file( + verifypem)); + SSL_CTX_set_verify(ctx, SSL_VERIFY_PEER, NULL); + } + return ctx; +#else + (void)key; (void)pem; (void)verifypem; + return NULL; +#endif +} + +void* connect_sslctx_create(char* key, char* pem, char* verifypem) +{ +#ifdef HAVE_SSL + SSL_CTX* ctx = SSL_CTX_new(SSLv23_client_method()); + if(!ctx) { + log_crypto_err("could not allocate SSL_CTX pointer"); + return NULL; + } + if(!(SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) & SSL_OP_NO_SSLv2)) { + log_crypto_err("could not set SSL_OP_NO_SSLv2"); + SSL_CTX_free(ctx); + return NULL; + } + if(key && key[0]) { + if(!SSL_CTX_use_certificate_file(ctx, pem, SSL_FILETYPE_PEM)) { + log_err("error in client certificate %s", pem); + log_crypto_err("error in certificate file"); + SSL_CTX_free(ctx); + return NULL; + } + if(!SSL_CTX_use_PrivateKey_file(ctx, key, SSL_FILETYPE_PEM)) { + log_err("error in client private key %s", key); + log_crypto_err("error in key file"); + SSL_CTX_free(ctx); + return NULL; + } + if(!SSL_CTX_check_private_key(ctx)) { + log_err("error in client key %s", key); + log_crypto_err("error in SSL_CTX_check_private_key"); + SSL_CTX_free(ctx); + return NULL; + } + } + if(verifypem && verifypem[0]) { + if(!SSL_CTX_load_verify_locations(ctx, verifypem, NULL) != 1) { + log_crypto_err("error in SSL_CTX verify"); + SSL_CTX_free(ctx); + return NULL; + } + SSL_CTX_set_verify(ctx, SSL_VERIFY_PEER, NULL); + } + return ctx; +#else + (void)key; (void)pem; (void)verifypem; + return NULL; +#endif +} + +void* incoming_ssl_fd(void* sslctx, int fd) +{ +#ifdef HAVE_SSL + SSL* ssl = SSL_new((SSL_CTX*)sslctx); + if(!ssl) { + log_crypto_err("could not SSL_new"); + return NULL; + } + SSL_set_accept_state(ssl); + (void)SSL_set_mode(ssl, SSL_MODE_AUTO_RETRY); + if(!SSL_set_fd(ssl, fd)) { + log_crypto_err("could not SSL_set_fd"); + SSL_free(ssl); + return NULL; + } + return ssl; +#else + (void)sslctx; (void)fd; + return NULL; +#endif +} + +void* outgoing_ssl_fd(void* sslctx, int fd) +{ +#ifdef HAVE_SSL + SSL* ssl = SSL_new((SSL_CTX*)sslctx); + if(!ssl) { + log_crypto_err("could not SSL_new"); + return NULL; + } + SSL_set_connect_state(ssl); + (void)SSL_set_mode(ssl, SSL_MODE_AUTO_RETRY); + if(!SSL_set_fd(ssl, fd)) { + log_crypto_err("could not SSL_set_fd"); + SSL_free(ssl); + return NULL; + } + return ssl; +#else + (void)sslctx; (void)fd; + return NULL; +#endif +} + +#if defined(HAVE_SSL) && defined(OPENSSL_THREADS) && !defined(THREADS_DISABLED) +/** global lock list for openssl locks */ +static lock_basic_t *ub_openssl_locks = NULL; + +/** callback that gets thread id for openssl */ +static unsigned long +ub_crypto_id_cb(void) +{ + return (unsigned long)ub_thread_self(); +} + +static void +ub_crypto_lock_cb(int mode, int type, const char *ATTR_UNUSED(file), + int ATTR_UNUSED(line)) +{ + if((mode&CRYPTO_LOCK)) { + lock_basic_lock(&ub_openssl_locks[type]); + } else { + lock_basic_unlock(&ub_openssl_locks[type]); + } +} +#endif /* OPENSSL_THREADS */ + +int ub_openssl_lock_init(void) +{ +#if defined(HAVE_SSL) && defined(OPENSSL_THREADS) && !defined(THREADS_DISABLED) + int i; + ub_openssl_locks = (lock_basic_t*)malloc( + sizeof(lock_basic_t)*CRYPTO_num_locks()); + if(!ub_openssl_locks) + return 0; + for(i=0; i<CRYPTO_num_locks(); i++) { + lock_basic_init(&ub_openssl_locks[i]); + } + CRYPTO_set_id_callback(&ub_crypto_id_cb); + CRYPTO_set_locking_callback(&ub_crypto_lock_cb); +#endif /* OPENSSL_THREADS */ + return 1; +} + +void ub_openssl_lock_delete(void) +{ +#if defined(HAVE_SSL) && defined(OPENSSL_THREADS) && !defined(THREADS_DISABLED) + int i; + if(!ub_openssl_locks) + return; + CRYPTO_set_id_callback(NULL); + CRYPTO_set_locking_callback(NULL); + for(i=0; i<CRYPTO_num_locks(); i++) { + lock_basic_destroy(&ub_openssl_locks[i]); + } + free(ub_openssl_locks); +#endif /* OPENSSL_THREADS */ +} + diff --git a/external/unbound/util/net_help.h b/external/unbound/util/net_help.h new file mode 100644 index 000000000..54f4c9c0e --- /dev/null +++ b/external/unbound/util/net_help.h @@ -0,0 +1,393 @@ +/* + * util/net_help.h - network help functions + * + * Copyright (c) 2007, NLnet Labs. All rights reserved. + * + * This software is open source. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * Neither the name of the NLNET LABS nor the names of its contributors may + * be used to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/** + * \file + * + * This file contains functions to perform network related tasks. + */ + +#ifndef NET_HELP_H +#define NET_HELP_H +#include "util/log.h" +struct sock_list; +struct regional; + +/** DNS constants for uint16_t style flag manipulation. host byteorder. + * 1 1 1 1 1 1 + * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 + * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ + * |QR| Opcode |AA|TC|RD|RA| Z|AD|CD| RCODE | + * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ + */ +/** CD flag */ +#define BIT_CD 0x0010 +/** AD flag */ +#define BIT_AD 0x0020 +/** Z flag */ +#define BIT_Z 0x0040 +/** RA flag */ +#define BIT_RA 0x0080 +/** RD flag */ +#define BIT_RD 0x0100 +/** TC flag */ +#define BIT_TC 0x0200 +/** AA flag */ +#define BIT_AA 0x0400 +/** QR flag */ +#define BIT_QR 0x8000 +/** get RCODE bits from uint16 flags */ +#define FLAGS_GET_RCODE(f) ((f) & 0xf) +/** set RCODE bits in uint16 flags */ +#define FLAGS_SET_RCODE(f, r) (f = (((f) & 0xfff0) | (r))) + +/** timeout in seconds for UDP queries to auth servers. */ +#define UDP_AUTH_QUERY_TIMEOUT 4 +/** timeout in seconds for TCP queries to auth servers. */ +#define TCP_AUTH_QUERY_TIMEOUT 30 +/** Advertised version of EDNS capabilities */ +#define EDNS_ADVERTISED_VERSION 0 +/** Advertised size of EDNS capabilities */ +extern uint16_t EDNS_ADVERTISED_SIZE; +/** bits for EDNS bitfield */ +#define EDNS_DO 0x8000 /* Dnssec Ok */ +/** byte size of ip4 address */ +#define INET_SIZE 4 +/** byte size of ip6 address */ +#define INET6_SIZE 16 + +/** DNSKEY zone sign key flag */ +#define DNSKEY_BIT_ZSK 0x0100 +/** DNSKEY secure entry point, KSK flag */ +#define DNSKEY_BIT_SEP 0x0001 + +/** minimal responses when positive answer */ +extern int MINIMAL_RESPONSES; + +/** rrset order roundrobin */ +extern int RRSET_ROUNDROBIN; + +/** + * See if string is ip4 or ip6. + * @param str: IP specification. + * @return: true if string addr is an ip6 specced address. + */ +int str_is_ip6(const char* str); + +/** + * Set fd nonblocking. + * @param s: file descriptor. + * @return: 0 on error (error is printed to log). + */ +int fd_set_nonblock(int s); + +/** + * Set fd (back to) blocking. + * @param s: file descriptor. + * @return: 0 on error (error is printed to log). + */ +int fd_set_block(int s); + +/** + * See if number is a power of 2. + * @param num: the value. + * @return: true if the number is a power of 2. + */ +int is_pow2(size_t num); + +/** + * Allocate memory and copy over contents. + * @param data: what to copy over. + * @param len: length of data. + * @return: NULL on malloc failure, or newly malloced data. + */ +void* memdup(void* data, size_t len); + +/** + * Prints the sockaddr in readable format with log_info. Debug helper. + * @param v: at what verbosity level to print this. + * @param str: descriptive string printed with it. + * @param addr: the sockaddr to print. Can be ip4 or ip6. + * @param addrlen: length of addr. + */ +void log_addr(enum verbosity_value v, const char* str, + struct sockaddr_storage* addr, socklen_t addrlen); + +/** + * Prints zone name and sockaddr in readable format with log_info. Debug. + * @param v: at what verbosity level to print this. + * @param str: descriptive string printed with it. + * @param zone: DNS domain name, uncompressed wireformat. + * @param addr: the sockaddr to print. Can be ip4 or ip6. + * @param addrlen: length of addr. + */ +void log_name_addr(enum verbosity_value v, const char* str, uint8_t* zone, + struct sockaddr_storage* addr, socklen_t addrlen); + +/** + * Log errno and addr. + * @param str: descriptive string printed with it. + * @param err: errno string to print, i.e. strerror(errno). + * @param addr: the sockaddr to print. Can be ip4 or ip6. + * @param addrlen: length of addr. + */ +void log_err_addr(const char* str, const char* err, + struct sockaddr_storage* addr, socklen_t addrlen); + +/** + * Convert address string, with "@port" appendix, to sockaddr. + * Uses DNS port by default. + * @param str: the string + * @param addr: where to store sockaddr. + * @param addrlen: length of stored sockaddr is returned. + * @return 0 on error. + */ +int extstrtoaddr(const char* str, struct sockaddr_storage* addr, + socklen_t* addrlen); + +/** + * Convert ip address string and port to sockaddr. + * @param ip: ip4 or ip6 address string. + * @param port: port number, host format. + * @param addr: where to store sockaddr. + * @param addrlen: length of stored sockaddr is returned. + * @return 0 on error. + */ +int ipstrtoaddr(const char* ip, int port, struct sockaddr_storage* addr, + socklen_t* addrlen); + +/** + * Convert ip netblock (ip/netsize) string and port to sockaddr. + * *SLOW*, does a malloc internally to avoid writing over 'ip' string. + * @param ip: ip4 or ip6 address string. + * @param port: port number, host format. + * @param addr: where to store sockaddr. + * @param addrlen: length of stored sockaddr is returned. + * @param net: netblock size is returned. + * @return 0 on error. + */ +int netblockstrtoaddr(const char* ip, int port, struct sockaddr_storage* addr, + socklen_t* addrlen, int* net); + +/** + * Print string with neat domain name, type and class. + * @param v: at what verbosity level to print this. + * @param str: string of message. + * @param name: domain name uncompressed wireformat. + * @param type: host format RR type. + * @param dclass: host format RR class. + */ +void log_nametypeclass(enum verbosity_value v, const char* str, + uint8_t* name, uint16_t type, uint16_t dclass); + +/** + * Compare two sockaddrs. Imposes an ordering on the addresses. + * Compares address and port. + * @param addr1: address 1. + * @param len1: lengths of addr1. + * @param addr2: address 2. + * @param len2: lengths of addr2. + * @return: 0 if addr1 == addr2. -1 if addr1 is smaller, +1 if larger. + */ +int sockaddr_cmp(struct sockaddr_storage* addr1, socklen_t len1, + struct sockaddr_storage* addr2, socklen_t len2); + +/** + * Compare two sockaddrs. Compares address, not the port. + * @param addr1: address 1. + * @param len1: lengths of addr1. + * @param addr2: address 2. + * @param len2: lengths of addr2. + * @return: 0 if addr1 == addr2. -1 if addr1 is smaller, +1 if larger. + */ +int sockaddr_cmp_addr(struct sockaddr_storage* addr1, socklen_t len1, + struct sockaddr_storage* addr2, socklen_t len2); + +/** + * Checkout address family. + * @param addr: the sockaddr to examine. + * @param len: the length of addr. + * @return: true if sockaddr is ip6. + */ +int addr_is_ip6(struct sockaddr_storage* addr, socklen_t len); + +/** + * Make sure the sockaddr ends in zeroes. For tree insertion and subsequent + * comparison. + * @param addr: the ip4 or ip6 addr. + * @param len: length of addr. + * @param net: number of bits to leave untouched, the rest of the netblock + * address is zeroed. + */ +void addr_mask(struct sockaddr_storage* addr, socklen_t len, int net); + +/** + * See how many bits are shared, equal, between two addrs. + * @param addr1: first addr. + * @param net1: netblock size of first addr. + * @param addr2: second addr. + * @param net2: netblock size of second addr. + * @param addrlen: length of first addr and of second addr. + * They must be of the same length (i.e. same type IP4, IP6). + * @return: number of bits the same. + */ +int addr_in_common(struct sockaddr_storage* addr1, int net1, + struct sockaddr_storage* addr2, int net2, socklen_t addrlen); + +/** + * Put address into string, works for IPv4 and IPv6. + * @param addr: address + * @param addrlen: length of address + * @param buf: result string stored here + * @param len: length of buf. + * On failure a string with "error" is stored inside. + */ +void addr_to_str(struct sockaddr_storage* addr, socklen_t addrlen, + char* buf, size_t len); + +/** + * See if sockaddr is an ipv6 mapped ipv4 address, "::ffff:0.0.0.0" + * @param addr: address + * @param addrlen: length of address + * @return true if so + */ +int addr_is_ip4mapped(struct sockaddr_storage* addr, socklen_t addrlen); + +/** + * See if sockaddr is 255.255.255.255. + * @param addr: address + * @param addrlen: length of address + * @return true if so + */ +int addr_is_broadcast(struct sockaddr_storage* addr, socklen_t addrlen); + +/** + * See if sockaddr is 0.0.0.0 or ::0. + * @param addr: address + * @param addrlen: length of address + * @return true if so + */ +int addr_is_any(struct sockaddr_storage* addr, socklen_t addrlen); + +/** + * Insert new socket list item. If fails logs error. + * @param list: pointer to pointer to first item. + * @param addr: address or NULL if 'cache'. + * @param len: length of addr, or 0 if 'cache'. + * @param region: where to allocate + */ +void sock_list_insert(struct sock_list** list, struct sockaddr_storage* addr, + socklen_t len, struct regional* region); + +/** + * Append one list to another. Must both be from same qstate(regional). + * @param list: pointer to result list that is modified. + * @param add: item(s) to add. They are prepended to list. + */ +void sock_list_prepend(struct sock_list** list, struct sock_list* add); + +/** + * Find addr in list. + * @param list: to search in + * @param addr: address to look for. + * @param len: length. Can be 0, look for 'cache entry'. + * @return true if found. + */ +int sock_list_find(struct sock_list* list, struct sockaddr_storage* addr, + socklen_t len); + +/** + * Merge socklist into another socket list. Allocates the new entries + * freshly and copies them over, so also performs a region switchover. + * Allocation failures are logged. + * @param list: the destination list (checked for duplicates) + * @param region: where to allocate + * @param add: the list of entries to add. + */ +void sock_list_merge(struct sock_list** list, struct regional* region, + struct sock_list* add); + +/** + * Log libcrypto error with descriptive string. Calls log_err(). + * @param str: what failed. + */ +void log_crypto_err(const char* str); + +/** + * create SSL listen context + * @param key: private key file. + * @param pem: public key cert. + * @param verifypem: if nonNULL, verifylocation file. + * return SSL_CTX* or NULL on failure (logged). + */ +void* listen_sslctx_create(char* key, char* pem, char* verifypem); + +/** + * create SSL connect context + * @param key: if nonNULL (also pem nonNULL), the client private key. + * @param pem: client public key (or NULL if key is NULL). + * @param verifypem: if nonNULL used for verifylocation file. + * @return SSL_CTX* or NULL on failure (logged). + */ +void* connect_sslctx_create(char* key, char* pem, char* verifypem); + +/** + * accept a new fd and wrap it in a BIO in SSL + * @param sslctx: the SSL_CTX to use (from listen_sslctx_create()). + * @param fd: from accept, nonblocking. + * @return SSL or NULL on alloc failure. + */ +void* incoming_ssl_fd(void* sslctx, int fd); + +/** + * connect a new fd and wrap it in a BIO in SSL + * @param sslctx: the SSL_CTX to use (from connect_sslctx_create()) + * @param fd: from connect. + * @return SSL or NULL on alloc failure + */ +void* outgoing_ssl_fd(void* sslctx, int fd); + +/** + * Initialize openssl locking for thread safety + * @return false on failure (alloc failure). + */ +int ub_openssl_lock_init(void); + +/** + * De-init the allocated openssl locks + */ +void ub_openssl_lock_delete(void); + +#endif /* NET_HELP_H */ diff --git a/external/unbound/util/netevent.c b/external/unbound/util/netevent.c new file mode 100644 index 000000000..c7ed30e6c --- /dev/null +++ b/external/unbound/util/netevent.c @@ -0,0 +1,2217 @@ +/* + * util/netevent.c - event notification + * + * Copyright (c) 2007, NLnet Labs. All rights reserved. + * + * This software is open source. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * Neither the name of the NLNET LABS nor the names of its contributors may + * be used to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/** + * \file + * + * This file contains event notification functions. + */ +#include "config.h" +#include "util/netevent.h" +#include "util/log.h" +#include "util/net_help.h" +#include "util/fptr_wlist.h" +#include "ldns/pkthdr.h" +#include "ldns/sbuffer.h" +#include "dnstap/dnstap.h" +#ifdef HAVE_OPENSSL_SSL_H +#include <openssl/ssl.h> +#endif +#ifdef HAVE_OPENSSL_ERR_H +#include <openssl/err.h> +#endif + +/* -------- Start of local definitions -------- */ +/** if CMSG_ALIGN is not defined on this platform, a workaround */ +#ifndef CMSG_ALIGN +# ifdef _CMSG_DATA_ALIGN +# define CMSG_ALIGN _CMSG_DATA_ALIGN +# else +# define CMSG_ALIGN(len) (((len)+sizeof(long)-1) & ~(sizeof(long)-1)) +# endif +#endif + +/** if CMSG_LEN is not defined on this platform, a workaround */ +#ifndef CMSG_LEN +# define CMSG_LEN(len) (CMSG_ALIGN(sizeof(struct cmsghdr))+(len)) +#endif + +/** if CMSG_SPACE is not defined on this platform, a workaround */ +#ifndef CMSG_SPACE +# ifdef _CMSG_HDR_ALIGN +# define CMSG_SPACE(l) (CMSG_ALIGN(l)+_CMSG_HDR_ALIGN(sizeof(struct cmsghdr))) +# else +# define CMSG_SPACE(l) (CMSG_ALIGN(l)+CMSG_ALIGN(sizeof(struct cmsghdr))) +# endif +#endif + +/** The TCP reading or writing query timeout in seconds */ +#define TCP_QUERY_TIMEOUT 120 + +#ifndef NONBLOCKING_IS_BROKEN +/** number of UDP reads to perform per read indication from select */ +#define NUM_UDP_PER_SELECT 100 +#else +#define NUM_UDP_PER_SELECT 1 +#endif + +/* We define libevent structures here to hide the libevent stuff. */ + +#ifdef USE_MINI_EVENT +# ifdef USE_WINSOCK +# include "util/winsock_event.h" +# else +# include "util/mini_event.h" +# endif /* USE_WINSOCK */ +#else /* USE_MINI_EVENT */ + /* we use libevent */ +# ifdef HAVE_EVENT_H +# include <event.h> +# else +# include "event2/event.h" +# include "event2/event_struct.h" +# include "event2/event_compat.h" +# endif +#endif /* USE_MINI_EVENT */ + +/** + * The internal event structure for keeping libevent info for the event. + * Possibly other structures (list, tree) this is part of. + */ +struct internal_event { + /** the comm base */ + struct comm_base* base; + /** libevent event type, alloced here */ + struct event ev; +}; + +/** + * Internal base structure, so that every thread has its own events. + */ +struct internal_base { + /** libevent event_base type. */ + struct event_base* base; + /** seconds time pointer points here */ + time_t secs; + /** timeval with current time */ + struct timeval now; + /** the event used for slow_accept timeouts */ + struct event slow_accept; + /** true if slow_accept is enabled */ + int slow_accept_enabled; +}; + +/** + * Internal timer structure, to store timer event in. + */ +struct internal_timer { + /** the comm base */ + struct comm_base* base; + /** libevent event type, alloced here */ + struct event ev; + /** is timer enabled */ + uint8_t enabled; +}; + +/** + * Internal signal structure, to store signal event in. + */ +struct internal_signal { + /** libevent event type, alloced here */ + struct event ev; + /** next in signal list */ + struct internal_signal* next; +}; + +/** create a tcp handler with a parent */ +static struct comm_point* comm_point_create_tcp_handler( + struct comm_base *base, struct comm_point* parent, size_t bufsize, + comm_point_callback_t* callback, void* callback_arg); + +/* -------- End of local definitions -------- */ + +#ifdef USE_MINI_EVENT +/** minievent updates the time when it blocks. */ +#define comm_base_now(x) /* nothing to do */ +#else /* !USE_MINI_EVENT */ +/** fillup the time values in the event base */ +static void +comm_base_now(struct comm_base* b) +{ + if(gettimeofday(&b->eb->now, NULL) < 0) { + log_err("gettimeofday: %s", strerror(errno)); + } + b->eb->secs = (time_t)b->eb->now.tv_sec; +} +#endif /* USE_MINI_EVENT */ + +struct comm_base* +comm_base_create(int sigs) +{ + struct comm_base* b = (struct comm_base*)calloc(1, + sizeof(struct comm_base)); + if(!b) + return NULL; + b->eb = (struct internal_base*)calloc(1, sizeof(struct internal_base)); + if(!b->eb) { + free(b); + return NULL; + } +#ifdef USE_MINI_EVENT + (void)sigs; + /* use mini event time-sharing feature */ + b->eb->base = event_init(&b->eb->secs, &b->eb->now); +#else +# if defined(HAVE_EV_LOOP) || defined(HAVE_EV_DEFAULT_LOOP) + /* libev */ + if(sigs) + b->eb->base=(struct event_base *)ev_default_loop(EVFLAG_AUTO); + else + b->eb->base=(struct event_base *)ev_loop_new(EVFLAG_AUTO); +# else + (void)sigs; +# ifdef HAVE_EVENT_BASE_NEW + b->eb->base = event_base_new(); +# else + b->eb->base = event_init(); +# endif +# endif +#endif + if(!b->eb->base) { + free(b->eb); + free(b); + return NULL; + } + comm_base_now(b); + /* avoid event_get_method call which causes crashes even when + * not printing, because its result is passed */ + verbose(VERB_ALGO, +#if defined(HAVE_EV_LOOP) || defined(HAVE_EV_DEFAULT_LOOP) + "libev" +#elif defined(USE_MINI_EVENT) + "event " +#else + "libevent " +#endif + "%s uses %s method.", + event_get_version(), +#ifdef HAVE_EVENT_BASE_GET_METHOD + event_base_get_method(b->eb->base) +#else + "not_obtainable" +#endif + ); + return b; +} + +struct comm_base* +comm_base_create_event(struct event_base* base) +{ + struct comm_base* b = (struct comm_base*)calloc(1, + sizeof(struct comm_base)); + if(!b) + return NULL; + b->eb = (struct internal_base*)calloc(1, sizeof(struct internal_base)); + if(!b->eb) { + free(b); + return NULL; + } + b->eb->base = base; + comm_base_now(b); + return b; +} + +void +comm_base_delete(struct comm_base* b) +{ + if(!b) + return; + if(b->eb->slow_accept_enabled) { + if(event_del(&b->eb->slow_accept) != 0) { + log_err("could not event_del slow_accept"); + } + } +#ifdef USE_MINI_EVENT + event_base_free(b->eb->base); +#elif defined(HAVE_EVENT_BASE_FREE) && defined(HAVE_EVENT_BASE_ONCE) + /* only libevent 1.2+ has it, but in 1.2 it is broken - + assertion fails on signal handling ev that is not deleted + in libevent 1.3c (event_base_once appears) this is fixed. */ + event_base_free(b->eb->base); +#endif /* HAVE_EVENT_BASE_FREE and HAVE_EVENT_BASE_ONCE */ + b->eb->base = NULL; + free(b->eb); + free(b); +} + +void +comm_base_delete_no_base(struct comm_base* b) +{ + if(!b) + return; + if(b->eb->slow_accept_enabled) { + if(event_del(&b->eb->slow_accept) != 0) { + log_err("could not event_del slow_accept"); + } + } + b->eb->base = NULL; + free(b->eb); + free(b); +} + +void +comm_base_timept(struct comm_base* b, time_t** tt, struct timeval** tv) +{ + *tt = &b->eb->secs; + *tv = &b->eb->now; +} + +void +comm_base_dispatch(struct comm_base* b) +{ + int retval; + retval = event_base_dispatch(b->eb->base); + if(retval != 0) { + fatal_exit("event_dispatch returned error %d, " + "errno is %s", retval, strerror(errno)); + } +} + +void comm_base_exit(struct comm_base* b) +{ + if(event_base_loopexit(b->eb->base, NULL) != 0) { + log_err("Could not loopexit"); + } +} + +void comm_base_set_slow_accept_handlers(struct comm_base* b, + void (*stop_acc)(void*), void (*start_acc)(void*), void* arg) +{ + b->stop_accept = stop_acc; + b->start_accept = start_acc; + b->cb_arg = arg; +} + +struct event_base* comm_base_internal(struct comm_base* b) +{ + return b->eb->base; +} + +/** see if errno for udp has to be logged or not uses globals */ +static int +udp_send_errno_needs_log(struct sockaddr* addr, socklen_t addrlen) +{ + /* do not log transient errors (unless high verbosity) */ +#if defined(ENETUNREACH) || defined(EHOSTDOWN) || defined(EHOSTUNREACH) || defined(ENETDOWN) + switch(errno) { +# ifdef ENETUNREACH + case ENETUNREACH: +# endif +# ifdef EHOSTDOWN + case EHOSTDOWN: +# endif +# ifdef EHOSTUNREACH + case EHOSTUNREACH: +# endif +# ifdef ENETDOWN + case ENETDOWN: +# endif + if(verbosity < VERB_ALGO) + return 0; + default: + break; + } +#endif + /* permission denied is gotten for every send if the + * network is disconnected (on some OS), squelch it */ + if(errno == EPERM && verbosity < VERB_DETAIL) + return 0; + /* squelch errors where people deploy AAAA ::ffff:bla for + * authority servers, which we try for intranets. */ + if(errno == EINVAL && addr_is_ip4mapped( + (struct sockaddr_storage*)addr, addrlen) && + verbosity < VERB_DETAIL) + return 0; + /* SO_BROADCAST sockopt can give access to 255.255.255.255, + * but a dns cache does not need it. */ + if(errno == EACCES && addr_is_broadcast( + (struct sockaddr_storage*)addr, addrlen) && + verbosity < VERB_DETAIL) + return 0; + return 1; +} + +int tcp_connect_errno_needs_log(struct sockaddr* addr, socklen_t addrlen) +{ + return udp_send_errno_needs_log(addr, addrlen); +} + +/* send a UDP reply */ +int +comm_point_send_udp_msg(struct comm_point *c, sldns_buffer* packet, + struct sockaddr* addr, socklen_t addrlen) +{ + ssize_t sent; + log_assert(c->fd != -1); +#ifdef UNBOUND_DEBUG + if(sldns_buffer_remaining(packet) == 0) + log_err("error: send empty UDP packet"); +#endif + log_assert(addr && addrlen > 0); + sent = sendto(c->fd, (void*)sldns_buffer_begin(packet), + sldns_buffer_remaining(packet), 0, + addr, addrlen); + if(sent == -1) { + if(!udp_send_errno_needs_log(addr, addrlen)) + return 0; +#ifndef USE_WINSOCK + verbose(VERB_OPS, "sendto failed: %s", strerror(errno)); +#else + verbose(VERB_OPS, "sendto failed: %s", + wsa_strerror(WSAGetLastError())); +#endif + log_addr(VERB_OPS, "remote address is", + (struct sockaddr_storage*)addr, addrlen); + return 0; + } else if((size_t)sent != sldns_buffer_remaining(packet)) { + log_err("sent %d in place of %d bytes", + (int)sent, (int)sldns_buffer_remaining(packet)); + return 0; + } + return 1; +} + +#if defined(AF_INET6) && defined(IPV6_PKTINFO) && (defined(HAVE_RECVMSG) || defined(HAVE_SENDMSG)) +/** print debug ancillary info */ +static void p_ancil(const char* str, struct comm_reply* r) +{ + if(r->srctype != 4 && r->srctype != 6) { + log_info("%s: unknown srctype %d", str, r->srctype); + return; + } + if(r->srctype == 6) { + char buf[1024]; + if(inet_ntop(AF_INET6, &r->pktinfo.v6info.ipi6_addr, + buf, (socklen_t)sizeof(buf)) == 0) { + (void)strlcpy(buf, "(inet_ntop error)", sizeof(buf)); + } + buf[sizeof(buf)-1]=0; + log_info("%s: %s %d", str, buf, r->pktinfo.v6info.ipi6_ifindex); + } else if(r->srctype == 4) { +#ifdef IP_PKTINFO + char buf1[1024], buf2[1024]; + if(inet_ntop(AF_INET, &r->pktinfo.v4info.ipi_addr, + buf1, (socklen_t)sizeof(buf1)) == 0) { + (void)strlcpy(buf1, "(inet_ntop error)", sizeof(buf1)); + } + buf1[sizeof(buf1)-1]=0; +#ifdef HAVE_STRUCT_IN_PKTINFO_IPI_SPEC_DST + if(inet_ntop(AF_INET, &r->pktinfo.v4info.ipi_spec_dst, + buf2, (socklen_t)sizeof(buf2)) == 0) { + (void)strlcpy(buf2, "(inet_ntop error)", sizeof(buf2)); + } + buf2[sizeof(buf2)-1]=0; +#else + buf2[0]=0; +#endif + log_info("%s: %d %s %s", str, r->pktinfo.v4info.ipi_ifindex, + buf1, buf2); +#elif defined(IP_RECVDSTADDR) + char buf1[1024]; + if(inet_ntop(AF_INET, &r->pktinfo.v4addr, + buf1, (socklen_t)sizeof(buf1)) == 0) { + (void)strlcpy(buf1, "(inet_ntop error)", sizeof(buf1)); + } + buf1[sizeof(buf1)-1]=0; + log_info("%s: %s", str, buf1); +#endif /* IP_PKTINFO or PI_RECVDSTDADDR */ + } +} +#endif /* AF_INET6 && IPV6_PKTINFO && HAVE_RECVMSG||HAVE_SENDMSG */ + +/** send a UDP reply over specified interface*/ +static int +comm_point_send_udp_msg_if(struct comm_point *c, sldns_buffer* packet, + struct sockaddr* addr, socklen_t addrlen, struct comm_reply* r) +{ +#if defined(AF_INET6) && defined(IPV6_PKTINFO) && defined(HAVE_SENDMSG) + ssize_t sent; + struct msghdr msg; + struct iovec iov[1]; + char control[256]; +#ifndef S_SPLINT_S + struct cmsghdr *cmsg; +#endif /* S_SPLINT_S */ + + log_assert(c->fd != -1); +#ifdef UNBOUND_DEBUG + if(sldns_buffer_remaining(packet) == 0) + log_err("error: send empty UDP packet"); +#endif + log_assert(addr && addrlen > 0); + + msg.msg_name = addr; + msg.msg_namelen = addrlen; + iov[0].iov_base = sldns_buffer_begin(packet); + iov[0].iov_len = sldns_buffer_remaining(packet); + msg.msg_iov = iov; + msg.msg_iovlen = 1; + msg.msg_control = control; +#ifndef S_SPLINT_S + msg.msg_controllen = sizeof(control); +#endif /* S_SPLINT_S */ + msg.msg_flags = 0; + +#ifndef S_SPLINT_S + cmsg = CMSG_FIRSTHDR(&msg); + if(r->srctype == 4) { +#ifdef IP_PKTINFO + msg.msg_controllen = CMSG_SPACE(sizeof(struct in_pktinfo)); + log_assert(msg.msg_controllen <= sizeof(control)); + cmsg->cmsg_level = IPPROTO_IP; + cmsg->cmsg_type = IP_PKTINFO; + memmove(CMSG_DATA(cmsg), &r->pktinfo.v4info, + sizeof(struct in_pktinfo)); + cmsg->cmsg_len = CMSG_LEN(sizeof(struct in_pktinfo)); +#elif defined(IP_SENDSRCADDR) + msg.msg_controllen = CMSG_SPACE(sizeof(struct in_addr)); + log_assert(msg.msg_controllen <= sizeof(control)); + cmsg->cmsg_level = IPPROTO_IP; + cmsg->cmsg_type = IP_SENDSRCADDR; + memmove(CMSG_DATA(cmsg), &r->pktinfo.v4addr, + sizeof(struct in_addr)); + cmsg->cmsg_len = CMSG_LEN(sizeof(struct in_addr)); +#else + verbose(VERB_ALGO, "no IP_PKTINFO or IP_SENDSRCADDR"); + msg.msg_control = NULL; +#endif /* IP_PKTINFO or IP_SENDSRCADDR */ + } else if(r->srctype == 6) { + msg.msg_controllen = CMSG_SPACE(sizeof(struct in6_pktinfo)); + log_assert(msg.msg_controllen <= sizeof(control)); + cmsg->cmsg_level = IPPROTO_IPV6; + cmsg->cmsg_type = IPV6_PKTINFO; + memmove(CMSG_DATA(cmsg), &r->pktinfo.v6info, + sizeof(struct in6_pktinfo)); + cmsg->cmsg_len = CMSG_LEN(sizeof(struct in6_pktinfo)); + } else { + /* try to pass all 0 to use default route */ + msg.msg_controllen = CMSG_SPACE(sizeof(struct in6_pktinfo)); + log_assert(msg.msg_controllen <= sizeof(control)); + cmsg->cmsg_level = IPPROTO_IPV6; + cmsg->cmsg_type = IPV6_PKTINFO; + memset(CMSG_DATA(cmsg), 0, sizeof(struct in6_pktinfo)); + cmsg->cmsg_len = CMSG_LEN(sizeof(struct in6_pktinfo)); + } +#endif /* S_SPLINT_S */ + if(verbosity >= VERB_ALGO) + p_ancil("send_udp over interface", r); + sent = sendmsg(c->fd, &msg, 0); + if(sent == -1) { + if(!udp_send_errno_needs_log(addr, addrlen)) + return 0; + verbose(VERB_OPS, "sendmsg failed: %s", strerror(errno)); + log_addr(VERB_OPS, "remote address is", + (struct sockaddr_storage*)addr, addrlen); + return 0; + } else if((size_t)sent != sldns_buffer_remaining(packet)) { + log_err("sent %d in place of %d bytes", + (int)sent, (int)sldns_buffer_remaining(packet)); + return 0; + } + return 1; +#else + (void)c; + (void)packet; + (void)addr; + (void)addrlen; + (void)r; + log_err("sendmsg: IPV6_PKTINFO not supported"); + return 0; +#endif /* AF_INET6 && IPV6_PKTINFO && HAVE_SENDMSG */ +} + +void +comm_point_udp_ancil_callback(int fd, short event, void* arg) +{ +#if defined(AF_INET6) && defined(IPV6_PKTINFO) && defined(HAVE_RECVMSG) + struct comm_reply rep; + struct msghdr msg; + struct iovec iov[1]; + ssize_t rcv; + char ancil[256]; + int i; +#ifndef S_SPLINT_S + struct cmsghdr* cmsg; +#endif /* S_SPLINT_S */ + + rep.c = (struct comm_point*)arg; + log_assert(rep.c->type == comm_udp); + + if(!(event&EV_READ)) + return; + log_assert(rep.c && rep.c->buffer && rep.c->fd == fd); + comm_base_now(rep.c->ev->base); + for(i=0; i<NUM_UDP_PER_SELECT; i++) { + sldns_buffer_clear(rep.c->buffer); + rep.addrlen = (socklen_t)sizeof(rep.addr); + log_assert(fd != -1); + log_assert(sldns_buffer_remaining(rep.c->buffer) > 0); + msg.msg_name = &rep.addr; + msg.msg_namelen = (socklen_t)sizeof(rep.addr); + iov[0].iov_base = sldns_buffer_begin(rep.c->buffer); + iov[0].iov_len = sldns_buffer_remaining(rep.c->buffer); + msg.msg_iov = iov; + msg.msg_iovlen = 1; + msg.msg_control = ancil; +#ifndef S_SPLINT_S + msg.msg_controllen = sizeof(ancil); +#endif /* S_SPLINT_S */ + msg.msg_flags = 0; + rcv = recvmsg(fd, &msg, 0); + if(rcv == -1) { + if(errno != EAGAIN && errno != EINTR) { + log_err("recvmsg failed: %s", strerror(errno)); + } + return; + } + rep.addrlen = msg.msg_namelen; + sldns_buffer_skip(rep.c->buffer, rcv); + sldns_buffer_flip(rep.c->buffer); + rep.srctype = 0; +#ifndef S_SPLINT_S + for(cmsg = CMSG_FIRSTHDR(&msg); cmsg != NULL; + cmsg = CMSG_NXTHDR(&msg, cmsg)) { + if( cmsg->cmsg_level == IPPROTO_IPV6 && + cmsg->cmsg_type == IPV6_PKTINFO) { + rep.srctype = 6; + memmove(&rep.pktinfo.v6info, CMSG_DATA(cmsg), + sizeof(struct in6_pktinfo)); + break; +#ifdef IP_PKTINFO + } else if( cmsg->cmsg_level == IPPROTO_IP && + cmsg->cmsg_type == IP_PKTINFO) { + rep.srctype = 4; + memmove(&rep.pktinfo.v4info, CMSG_DATA(cmsg), + sizeof(struct in_pktinfo)); + break; +#elif defined(IP_RECVDSTADDR) + } else if( cmsg->cmsg_level == IPPROTO_IP && + cmsg->cmsg_type == IP_RECVDSTADDR) { + rep.srctype = 4; + memmove(&rep.pktinfo.v4addr, CMSG_DATA(cmsg), + sizeof(struct in_addr)); + break; +#endif /* IP_PKTINFO or IP_RECVDSTADDR */ + } + } + if(verbosity >= VERB_ALGO) + p_ancil("receive_udp on interface", &rep); +#endif /* S_SPLINT_S */ + fptr_ok(fptr_whitelist_comm_point(rep.c->callback)); + if((*rep.c->callback)(rep.c, rep.c->cb_arg, NETEVENT_NOERROR, &rep)) { + /* send back immediate reply */ + (void)comm_point_send_udp_msg_if(rep.c, rep.c->buffer, + (struct sockaddr*)&rep.addr, rep.addrlen, &rep); + } + if(rep.c->fd == -1) /* commpoint closed */ + break; + } +#else + (void)fd; + (void)event; + (void)arg; + fatal_exit("recvmsg: No support for IPV6_PKTINFO. " + "Please disable interface-automatic"); +#endif /* AF_INET6 && IPV6_PKTINFO && HAVE_RECVMSG */ +} + +void +comm_point_udp_callback(int fd, short event, void* arg) +{ + struct comm_reply rep; + ssize_t rcv; + int i; + + rep.c = (struct comm_point*)arg; + log_assert(rep.c->type == comm_udp); + + if(!(event&EV_READ)) + return; + log_assert(rep.c && rep.c->buffer && rep.c->fd == fd); + comm_base_now(rep.c->ev->base); + for(i=0; i<NUM_UDP_PER_SELECT; i++) { + sldns_buffer_clear(rep.c->buffer); + rep.addrlen = (socklen_t)sizeof(rep.addr); + log_assert(fd != -1); + log_assert(sldns_buffer_remaining(rep.c->buffer) > 0); + rcv = recvfrom(fd, (void*)sldns_buffer_begin(rep.c->buffer), + sldns_buffer_remaining(rep.c->buffer), 0, + (struct sockaddr*)&rep.addr, &rep.addrlen); + if(rcv == -1) { +#ifndef USE_WINSOCK + if(errno != EAGAIN && errno != EINTR) + log_err("recvfrom %d failed: %s", + fd, strerror(errno)); +#else + if(WSAGetLastError() != WSAEINPROGRESS && + WSAGetLastError() != WSAECONNRESET && + WSAGetLastError()!= WSAEWOULDBLOCK) + log_err("recvfrom failed: %s", + wsa_strerror(WSAGetLastError())); +#endif + return; + } + sldns_buffer_skip(rep.c->buffer, rcv); + sldns_buffer_flip(rep.c->buffer); + rep.srctype = 0; + fptr_ok(fptr_whitelist_comm_point(rep.c->callback)); + if((*rep.c->callback)(rep.c, rep.c->cb_arg, NETEVENT_NOERROR, &rep)) { + /* send back immediate reply */ + (void)comm_point_send_udp_msg(rep.c, rep.c->buffer, + (struct sockaddr*)&rep.addr, rep.addrlen); + } + if(rep.c->fd != fd) /* commpoint closed to -1 or reused for + another UDP port. Note rep.c cannot be reused with TCP fd. */ + break; + } +} + +/** Use a new tcp handler for new query fd, set to read query */ +static void +setup_tcp_handler(struct comm_point* c, int fd) +{ + log_assert(c->type == comm_tcp); + log_assert(c->fd == -1); + sldns_buffer_clear(c->buffer); + c->tcp_is_reading = 1; + c->tcp_byte_count = 0; + comm_point_start_listening(c, fd, TCP_QUERY_TIMEOUT); +} + +void comm_base_handle_slow_accept(int ATTR_UNUSED(fd), + short ATTR_UNUSED(event), void* arg) +{ + struct comm_base* b = (struct comm_base*)arg; + /* timeout for the slow accept, re-enable accepts again */ + if(b->start_accept) { + verbose(VERB_ALGO, "wait is over, slow accept disabled"); + fptr_ok(fptr_whitelist_start_accept(b->start_accept)); + (*b->start_accept)(b->cb_arg); + b->eb->slow_accept_enabled = 0; + } +} + +int comm_point_perform_accept(struct comm_point* c, + struct sockaddr_storage* addr, socklen_t* addrlen) +{ + int new_fd; + *addrlen = (socklen_t)sizeof(*addr); + new_fd = accept(c->fd, (struct sockaddr*)addr, addrlen); + if(new_fd == -1) { +#ifndef USE_WINSOCK + /* EINTR is signal interrupt. others are closed connection. */ + if( errno == EINTR || errno == EAGAIN +#ifdef EWOULDBLOCK + || errno == EWOULDBLOCK +#endif +#ifdef ECONNABORTED + || errno == ECONNABORTED +#endif +#ifdef EPROTO + || errno == EPROTO +#endif /* EPROTO */ + ) + return -1; +#if defined(ENFILE) && defined(EMFILE) + if(errno == ENFILE || errno == EMFILE) { + /* out of file descriptors, likely outside of our + * control. stop accept() calls for some time */ + if(c->ev->base->stop_accept) { + struct comm_base* b = c->ev->base; + struct timeval tv; + verbose(VERB_ALGO, "out of file descriptors: " + "slow accept"); + b->eb->slow_accept_enabled = 1; + fptr_ok(fptr_whitelist_stop_accept( + b->stop_accept)); + (*b->stop_accept)(b->cb_arg); + /* set timeout, no mallocs */ + tv.tv_sec = NETEVENT_SLOW_ACCEPT_TIME/1000; + tv.tv_usec = NETEVENT_SLOW_ACCEPT_TIME%1000; + event_set(&b->eb->slow_accept, -1, EV_TIMEOUT, + comm_base_handle_slow_accept, b); + if(event_base_set(b->eb->base, + &b->eb->slow_accept) != 0) { + /* we do not want to log here, because + * that would spam the logfiles. + * error: "event_base_set failed." */ + } + if(event_add(&b->eb->slow_accept, &tv) != 0) { + /* we do not want to log here, + * error: "event_add failed." */ + } + } + return -1; + } +#endif + log_err_addr("accept failed", strerror(errno), addr, *addrlen); +#else /* USE_WINSOCK */ + if(WSAGetLastError() == WSAEINPROGRESS || + WSAGetLastError() == WSAECONNRESET) + return -1; + if(WSAGetLastError() == WSAEWOULDBLOCK) { + winsock_tcp_wouldblock(&c->ev->ev, EV_READ); + return -1; + } + log_err_addr("accept failed", wsa_strerror(WSAGetLastError()), + addr, *addrlen); +#endif + return -1; + } + fd_set_nonblock(new_fd); + return new_fd; +} + +#ifdef USE_WINSOCK +static long win_bio_cb(BIO *b, int oper, const char* ATTR_UNUSED(argp), + int ATTR_UNUSED(argi), long argl, long retvalue) +{ + verbose(VERB_ALGO, "bio_cb %d, %s %s %s", oper, + (oper&BIO_CB_RETURN)?"return":"before", + (oper&BIO_CB_READ)?"read":((oper&BIO_CB_WRITE)?"write":"other"), + WSAGetLastError()==WSAEWOULDBLOCK?"wsawb":""); + /* on windows, check if previous operation caused EWOULDBLOCK */ + if( (oper == (BIO_CB_READ|BIO_CB_RETURN) && argl == 0) || + (oper == (BIO_CB_GETS|BIO_CB_RETURN) && argl == 0)) { + if(WSAGetLastError() == WSAEWOULDBLOCK) + winsock_tcp_wouldblock((struct event*) + BIO_get_callback_arg(b), EV_READ); + } + if( (oper == (BIO_CB_WRITE|BIO_CB_RETURN) && argl == 0) || + (oper == (BIO_CB_PUTS|BIO_CB_RETURN) && argl == 0)) { + if(WSAGetLastError() == WSAEWOULDBLOCK) + winsock_tcp_wouldblock((struct event*) + BIO_get_callback_arg(b), EV_WRITE); + } + /* return original return value */ + return retvalue; +} + +/** set win bio callbacks for nonblocking operations */ +void +comm_point_tcp_win_bio_cb(struct comm_point* c, void* thessl) +{ + SSL* ssl = (SSL*)thessl; + /* set them both just in case, but usually they are the same BIO */ + BIO_set_callback(SSL_get_rbio(ssl), &win_bio_cb); + BIO_set_callback_arg(SSL_get_rbio(ssl), (char*)&c->ev->ev); + BIO_set_callback(SSL_get_wbio(ssl), &win_bio_cb); + BIO_set_callback_arg(SSL_get_wbio(ssl), (char*)&c->ev->ev); +} +#endif + +void +comm_point_tcp_accept_callback(int fd, short event, void* arg) +{ + struct comm_point* c = (struct comm_point*)arg, *c_hdl; + int new_fd; + log_assert(c->type == comm_tcp_accept); + if(!(event & EV_READ)) { + log_info("ignoring tcp accept event %d", (int)event); + return; + } + comm_base_now(c->ev->base); + /* find free tcp handler. */ + if(!c->tcp_free) { + log_warn("accepted too many tcp, connections full"); + return; + } + /* accept incoming connection. */ + c_hdl = c->tcp_free; + log_assert(fd != -1); + new_fd = comm_point_perform_accept(c, &c_hdl->repinfo.addr, + &c_hdl->repinfo.addrlen); + if(new_fd == -1) + return; + if(c->ssl) { + c_hdl->ssl = incoming_ssl_fd(c->ssl, new_fd); + if(!c_hdl->ssl) { + c_hdl->fd = new_fd; + comm_point_close(c_hdl); + return; + } + c_hdl->ssl_shake_state = comm_ssl_shake_read; +#ifdef USE_WINSOCK + comm_point_tcp_win_bio_cb(c_hdl, c_hdl->ssl); +#endif + } + + /* grab the tcp handler buffers */ + c->tcp_free = c_hdl->tcp_free; + if(!c->tcp_free) { + /* stop accepting incoming queries for now. */ + comm_point_stop_listening(c); + } + /* addr is dropped. Not needed for tcp reply. */ + setup_tcp_handler(c_hdl, new_fd); +} + +/** Make tcp handler free for next assignment */ +static void +reclaim_tcp_handler(struct comm_point* c) +{ + log_assert(c->type == comm_tcp); + if(c->ssl) { +#ifdef HAVE_SSL + SSL_shutdown(c->ssl); + SSL_free(c->ssl); + c->ssl = NULL; +#endif + } + comm_point_close(c); + if(c->tcp_parent) { + c->tcp_free = c->tcp_parent->tcp_free; + c->tcp_parent->tcp_free = c; + if(!c->tcp_free) { + /* re-enable listening on accept socket */ + comm_point_start_listening(c->tcp_parent, -1, -1); + } + } +} + +/** do the callback when writing is done */ +static void +tcp_callback_writer(struct comm_point* c) +{ + log_assert(c->type == comm_tcp); + sldns_buffer_clear(c->buffer); + if(c->tcp_do_toggle_rw) + c->tcp_is_reading = 1; + c->tcp_byte_count = 0; + /* switch from listening(write) to listening(read) */ + comm_point_stop_listening(c); + comm_point_start_listening(c, -1, -1); +} + +/** do the callback when reading is done */ +static void +tcp_callback_reader(struct comm_point* c) +{ + log_assert(c->type == comm_tcp || c->type == comm_local); + sldns_buffer_flip(c->buffer); + if(c->tcp_do_toggle_rw) + c->tcp_is_reading = 0; + c->tcp_byte_count = 0; + if(c->type == comm_tcp) + comm_point_stop_listening(c); + fptr_ok(fptr_whitelist_comm_point(c->callback)); + if( (*c->callback)(c, c->cb_arg, NETEVENT_NOERROR, &c->repinfo) ) { + comm_point_start_listening(c, -1, TCP_QUERY_TIMEOUT); + } +} + +/** continue ssl handshake */ +#ifdef HAVE_SSL +static int +ssl_handshake(struct comm_point* c) +{ + int r; + if(c->ssl_shake_state == comm_ssl_shake_hs_read) { + /* read condition satisfied back to writing */ + comm_point_listen_for_rw(c, 1, 1); + c->ssl_shake_state = comm_ssl_shake_none; + return 1; + } + if(c->ssl_shake_state == comm_ssl_shake_hs_write) { + /* write condition satisfied, back to reading */ + comm_point_listen_for_rw(c, 1, 0); + c->ssl_shake_state = comm_ssl_shake_none; + return 1; + } + + ERR_clear_error(); + r = SSL_do_handshake(c->ssl); + if(r != 1) { + int want = SSL_get_error(c->ssl, r); + if(want == SSL_ERROR_WANT_READ) { + if(c->ssl_shake_state == comm_ssl_shake_read) + return 1; + c->ssl_shake_state = comm_ssl_shake_read; + comm_point_listen_for_rw(c, 1, 0); + return 1; + } else if(want == SSL_ERROR_WANT_WRITE) { + if(c->ssl_shake_state == comm_ssl_shake_write) + return 1; + c->ssl_shake_state = comm_ssl_shake_write; + comm_point_listen_for_rw(c, 0, 1); + return 1; + } else if(r == 0) { + return 0; /* closed */ + } else if(want == SSL_ERROR_SYSCALL) { + /* SYSCALL and errno==0 means closed uncleanly */ + if(errno != 0) + log_err("SSL_handshake syscall: %s", + strerror(errno)); + return 0; + } else { + log_crypto_err("ssl handshake failed"); + log_addr(1, "ssl handshake failed", &c->repinfo.addr, + c->repinfo.addrlen); + return 0; + } + } + /* this is where peer verification could take place */ + log_addr(VERB_ALGO, "SSL DNS connection", &c->repinfo.addr, + c->repinfo.addrlen); + + /* setup listen rw correctly */ + if(c->tcp_is_reading) { + if(c->ssl_shake_state != comm_ssl_shake_read) + comm_point_listen_for_rw(c, 1, 0); + } else { + comm_point_listen_for_rw(c, 1, 1); + } + c->ssl_shake_state = comm_ssl_shake_none; + return 1; +} +#endif /* HAVE_SSL */ + +/** ssl read callback on TCP */ +static int +ssl_handle_read(struct comm_point* c) +{ +#ifdef HAVE_SSL + int r; + if(c->ssl_shake_state != comm_ssl_shake_none) { + if(!ssl_handshake(c)) + return 0; + if(c->ssl_shake_state != comm_ssl_shake_none) + return 1; + } + if(c->tcp_byte_count < sizeof(uint16_t)) { + /* read length bytes */ + ERR_clear_error(); + if((r=SSL_read(c->ssl, (void*)sldns_buffer_at(c->buffer, + c->tcp_byte_count), (int)(sizeof(uint16_t) - + c->tcp_byte_count))) <= 0) { + int want = SSL_get_error(c->ssl, r); + if(want == SSL_ERROR_ZERO_RETURN) { + return 0; /* shutdown, closed */ + } else if(want == SSL_ERROR_WANT_READ) { + return 1; /* read more later */ + } else if(want == SSL_ERROR_WANT_WRITE) { + c->ssl_shake_state = comm_ssl_shake_hs_write; + comm_point_listen_for_rw(c, 0, 1); + return 1; + } else if(want == SSL_ERROR_SYSCALL) { + if(errno != 0) + log_err("SSL_read syscall: %s", + strerror(errno)); + return 0; + } + log_crypto_err("could not SSL_read"); + return 0; + } + c->tcp_byte_count += r; + if(c->tcp_byte_count != sizeof(uint16_t)) + return 1; + if(sldns_buffer_read_u16_at(c->buffer, 0) > + sldns_buffer_capacity(c->buffer)) { + verbose(VERB_QUERY, "ssl: dropped larger than buffer"); + return 0; + } + sldns_buffer_set_limit(c->buffer, + sldns_buffer_read_u16_at(c->buffer, 0)); + if(sldns_buffer_limit(c->buffer) < LDNS_HEADER_SIZE) { + verbose(VERB_QUERY, "ssl: dropped bogus too short."); + return 0; + } + verbose(VERB_ALGO, "Reading ssl tcp query of length %d", + (int)sldns_buffer_limit(c->buffer)); + } + log_assert(sldns_buffer_remaining(c->buffer) > 0); + ERR_clear_error(); + r = SSL_read(c->ssl, (void*)sldns_buffer_current(c->buffer), + (int)sldns_buffer_remaining(c->buffer)); + if(r <= 0) { + int want = SSL_get_error(c->ssl, r); + if(want == SSL_ERROR_ZERO_RETURN) { + return 0; /* shutdown, closed */ + } else if(want == SSL_ERROR_WANT_READ) { + return 1; /* read more later */ + } else if(want == SSL_ERROR_WANT_WRITE) { + c->ssl_shake_state = comm_ssl_shake_hs_write; + comm_point_listen_for_rw(c, 0, 1); + return 1; + } else if(want == SSL_ERROR_SYSCALL) { + if(errno != 0) + log_err("SSL_read syscall: %s", + strerror(errno)); + return 0; + } + log_crypto_err("could not SSL_read"); + return 0; + } + sldns_buffer_skip(c->buffer, (ssize_t)r); + if(sldns_buffer_remaining(c->buffer) <= 0) { + tcp_callback_reader(c); + } + return 1; +#else + (void)c; + return 0; +#endif /* HAVE_SSL */ +} + +/** ssl write callback on TCP */ +static int +ssl_handle_write(struct comm_point* c) +{ +#ifdef HAVE_SSL + int r; + if(c->ssl_shake_state != comm_ssl_shake_none) { + if(!ssl_handshake(c)) + return 0; + if(c->ssl_shake_state != comm_ssl_shake_none) + return 1; + } + /* ignore return, if fails we may simply block */ + (void)SSL_set_mode(c->ssl, SSL_MODE_ENABLE_PARTIAL_WRITE); + if(c->tcp_byte_count < sizeof(uint16_t)) { + uint16_t len = htons(sldns_buffer_limit(c->buffer)); + ERR_clear_error(); + r = SSL_write(c->ssl, + (void*)(((uint8_t*)&len)+c->tcp_byte_count), + (int)(sizeof(uint16_t)-c->tcp_byte_count)); + if(r <= 0) { + int want = SSL_get_error(c->ssl, r); + if(want == SSL_ERROR_ZERO_RETURN) { + return 0; /* closed */ + } else if(want == SSL_ERROR_WANT_READ) { + c->ssl_shake_state = comm_ssl_shake_read; + comm_point_listen_for_rw(c, 1, 0); + return 1; /* wait for read condition */ + } else if(want == SSL_ERROR_WANT_WRITE) { + return 1; /* write more later */ + } else if(want == SSL_ERROR_SYSCALL) { + if(errno != 0) + log_err("SSL_write syscall: %s", + strerror(errno)); + return 0; + } + log_crypto_err("could not SSL_write"); + return 0; + } + c->tcp_byte_count += r; + if(c->tcp_byte_count < sizeof(uint16_t)) + return 1; + sldns_buffer_set_position(c->buffer, c->tcp_byte_count - + sizeof(uint16_t)); + if(sldns_buffer_remaining(c->buffer) == 0) { + tcp_callback_writer(c); + return 1; + } + } + log_assert(sldns_buffer_remaining(c->buffer) > 0); + ERR_clear_error(); + r = SSL_write(c->ssl, (void*)sldns_buffer_current(c->buffer), + (int)sldns_buffer_remaining(c->buffer)); + if(r <= 0) { + int want = SSL_get_error(c->ssl, r); + if(want == SSL_ERROR_ZERO_RETURN) { + return 0; /* closed */ + } else if(want == SSL_ERROR_WANT_READ) { + c->ssl_shake_state = comm_ssl_shake_read; + comm_point_listen_for_rw(c, 1, 0); + return 1; /* wait for read condition */ + } else if(want == SSL_ERROR_WANT_WRITE) { + return 1; /* write more later */ + } else if(want == SSL_ERROR_SYSCALL) { + if(errno != 0) + log_err("SSL_write syscall: %s", + strerror(errno)); + return 0; + } + log_crypto_err("could not SSL_write"); + return 0; + } + sldns_buffer_skip(c->buffer, (ssize_t)r); + + if(sldns_buffer_remaining(c->buffer) == 0) { + tcp_callback_writer(c); + } + return 1; +#else + (void)c; + return 0; +#endif /* HAVE_SSL */ +} + +/** handle ssl tcp connection with dns contents */ +static int +ssl_handle_it(struct comm_point* c) +{ + if(c->tcp_is_reading) + return ssl_handle_read(c); + return ssl_handle_write(c); +} + +/** Handle tcp reading callback. + * @param fd: file descriptor of socket. + * @param c: comm point to read from into buffer. + * @param short_ok: if true, very short packets are OK (for comm_local). + * @return: 0 on error + */ +static int +comm_point_tcp_handle_read(int fd, struct comm_point* c, int short_ok) +{ + ssize_t r; + log_assert(c->type == comm_tcp || c->type == comm_local); + if(c->ssl) + return ssl_handle_it(c); + if(!c->tcp_is_reading) + return 0; + + log_assert(fd != -1); + if(c->tcp_byte_count < sizeof(uint16_t)) { + /* read length bytes */ + r = recv(fd,(void*)sldns_buffer_at(c->buffer,c->tcp_byte_count), + sizeof(uint16_t)-c->tcp_byte_count, 0); + if(r == 0) + return 0; + else if(r == -1) { +#ifndef USE_WINSOCK + if(errno == EINTR || errno == EAGAIN) + return 1; +#ifdef ECONNRESET + if(errno == ECONNRESET && verbosity < 2) + return 0; /* silence reset by peer */ +#endif + log_err_addr("read (in tcp s)", strerror(errno), + &c->repinfo.addr, c->repinfo.addrlen); +#else /* USE_WINSOCK */ + if(WSAGetLastError() == WSAECONNRESET) + return 0; + if(WSAGetLastError() == WSAEINPROGRESS) + return 1; + if(WSAGetLastError() == WSAEWOULDBLOCK) { + winsock_tcp_wouldblock(&c->ev->ev, EV_READ); + return 1; + } + log_err_addr("read (in tcp s)", + wsa_strerror(WSAGetLastError()), + &c->repinfo.addr, c->repinfo.addrlen); +#endif + return 0; + } + c->tcp_byte_count += r; + if(c->tcp_byte_count != sizeof(uint16_t)) + return 1; + if(sldns_buffer_read_u16_at(c->buffer, 0) > + sldns_buffer_capacity(c->buffer)) { + verbose(VERB_QUERY, "tcp: dropped larger than buffer"); + return 0; + } + sldns_buffer_set_limit(c->buffer, + sldns_buffer_read_u16_at(c->buffer, 0)); + if(!short_ok && + sldns_buffer_limit(c->buffer) < LDNS_HEADER_SIZE) { + verbose(VERB_QUERY, "tcp: dropped bogus too short."); + return 0; + } + verbose(VERB_ALGO, "Reading tcp query of length %d", + (int)sldns_buffer_limit(c->buffer)); + } + + log_assert(sldns_buffer_remaining(c->buffer) > 0); + r = recv(fd, (void*)sldns_buffer_current(c->buffer), + sldns_buffer_remaining(c->buffer), 0); + if(r == 0) { + return 0; + } else if(r == -1) { +#ifndef USE_WINSOCK + if(errno == EINTR || errno == EAGAIN) + return 1; + log_err_addr("read (in tcp r)", strerror(errno), + &c->repinfo.addr, c->repinfo.addrlen); +#else /* USE_WINSOCK */ + if(WSAGetLastError() == WSAECONNRESET) + return 0; + if(WSAGetLastError() == WSAEINPROGRESS) + return 1; + if(WSAGetLastError() == WSAEWOULDBLOCK) { + winsock_tcp_wouldblock(&c->ev->ev, EV_READ); + return 1; + } + log_err_addr("read (in tcp r)", + wsa_strerror(WSAGetLastError()), + &c->repinfo.addr, c->repinfo.addrlen); +#endif + return 0; + } + sldns_buffer_skip(c->buffer, r); + if(sldns_buffer_remaining(c->buffer) <= 0) { + tcp_callback_reader(c); + } + return 1; +} + +/** + * Handle tcp writing callback. + * @param fd: file descriptor of socket. + * @param c: comm point to write buffer out of. + * @return: 0 on error + */ +static int +comm_point_tcp_handle_write(int fd, struct comm_point* c) +{ + ssize_t r; + log_assert(c->type == comm_tcp); + if(c->tcp_is_reading && !c->ssl) + return 0; + log_assert(fd != -1); + if(c->tcp_byte_count == 0 && c->tcp_check_nb_connect) { + /* check for pending error from nonblocking connect */ + /* from Stevens, unix network programming, vol1, 3rd ed, p450*/ + int error = 0; + socklen_t len = (socklen_t)sizeof(error); + if(getsockopt(fd, SOL_SOCKET, SO_ERROR, (void*)&error, + &len) < 0){ +#ifndef USE_WINSOCK + error = errno; /* on solaris errno is error */ +#else /* USE_WINSOCK */ + error = WSAGetLastError(); +#endif + } +#ifndef USE_WINSOCK +#if defined(EINPROGRESS) && defined(EWOULDBLOCK) + if(error == EINPROGRESS || error == EWOULDBLOCK) + return 1; /* try again later */ + else +#endif + if(error != 0 && verbosity < 2) + return 0; /* silence lots of chatter in the logs */ + else if(error != 0) { + log_err_addr("tcp connect", strerror(error), + &c->repinfo.addr, c->repinfo.addrlen); +#else /* USE_WINSOCK */ + /* examine error */ + if(error == WSAEINPROGRESS) + return 1; + else if(error == WSAEWOULDBLOCK) { + winsock_tcp_wouldblock(&c->ev->ev, EV_WRITE); + return 1; + } else if(error != 0 && verbosity < 2) + return 0; + else if(error != 0) { + log_err_addr("tcp connect", wsa_strerror(error), + &c->repinfo.addr, c->repinfo.addrlen); +#endif /* USE_WINSOCK */ + return 0; + } + } + if(c->ssl) + return ssl_handle_it(c); + + if(c->tcp_byte_count < sizeof(uint16_t)) { + uint16_t len = htons(sldns_buffer_limit(c->buffer)); +#ifdef HAVE_WRITEV + struct iovec iov[2]; + iov[0].iov_base = (uint8_t*)&len + c->tcp_byte_count; + iov[0].iov_len = sizeof(uint16_t) - c->tcp_byte_count; + iov[1].iov_base = sldns_buffer_begin(c->buffer); + iov[1].iov_len = sldns_buffer_limit(c->buffer); + log_assert(iov[0].iov_len > 0); + log_assert(iov[1].iov_len > 0); + r = writev(fd, iov, 2); +#else /* HAVE_WRITEV */ + r = send(fd, (void*)(((uint8_t*)&len)+c->tcp_byte_count), + sizeof(uint16_t)-c->tcp_byte_count, 0); +#endif /* HAVE_WRITEV */ + if(r == -1) { +#ifndef USE_WINSOCK +# ifdef EPIPE + if(errno == EPIPE && verbosity < 2) + return 0; /* silence 'broken pipe' */ + #endif + if(errno == EINTR || errno == EAGAIN) + return 1; +# ifdef HAVE_WRITEV + log_err_addr("tcp writev", strerror(errno), + &c->repinfo.addr, c->repinfo.addrlen); +# else /* HAVE_WRITEV */ + log_err_addr("tcp send s", strerror(errno), + &c->repinfo.addr, c->repinfo.addrlen); +# endif /* HAVE_WRITEV */ +#else + if(WSAGetLastError() == WSAENOTCONN) + return 1; + if(WSAGetLastError() == WSAEINPROGRESS) + return 1; + if(WSAGetLastError() == WSAEWOULDBLOCK) { + winsock_tcp_wouldblock(&c->ev->ev, EV_WRITE); + return 1; + } + log_err_addr("tcp send s", + wsa_strerror(WSAGetLastError()), + &c->repinfo.addr, c->repinfo.addrlen); +#endif + return 0; + } + c->tcp_byte_count += r; + if(c->tcp_byte_count < sizeof(uint16_t)) + return 1; + sldns_buffer_set_position(c->buffer, c->tcp_byte_count - + sizeof(uint16_t)); + if(sldns_buffer_remaining(c->buffer) == 0) { + tcp_callback_writer(c); + return 1; + } + } + log_assert(sldns_buffer_remaining(c->buffer) > 0); + r = send(fd, (void*)sldns_buffer_current(c->buffer), + sldns_buffer_remaining(c->buffer), 0); + if(r == -1) { +#ifndef USE_WINSOCK + if(errno == EINTR || errno == EAGAIN) + return 1; + log_err_addr("tcp send r", strerror(errno), + &c->repinfo.addr, c->repinfo.addrlen); +#else + if(WSAGetLastError() == WSAEINPROGRESS) + return 1; + if(WSAGetLastError() == WSAEWOULDBLOCK) { + winsock_tcp_wouldblock(&c->ev->ev, EV_WRITE); + return 1; + } + log_err_addr("tcp send r", wsa_strerror(WSAGetLastError()), + &c->repinfo.addr, c->repinfo.addrlen); +#endif + return 0; + } + sldns_buffer_skip(c->buffer, r); + + if(sldns_buffer_remaining(c->buffer) == 0) { + tcp_callback_writer(c); + } + + return 1; +} + +void +comm_point_tcp_handle_callback(int fd, short event, void* arg) +{ + struct comm_point* c = (struct comm_point*)arg; + log_assert(c->type == comm_tcp); + comm_base_now(c->ev->base); + + if(event&EV_READ) { + if(!comm_point_tcp_handle_read(fd, c, 0)) { + reclaim_tcp_handler(c); + if(!c->tcp_do_close) { + fptr_ok(fptr_whitelist_comm_point( + c->callback)); + (void)(*c->callback)(c, c->cb_arg, + NETEVENT_CLOSED, NULL); + } + } + return; + } + if(event&EV_WRITE) { + if(!comm_point_tcp_handle_write(fd, c)) { + reclaim_tcp_handler(c); + if(!c->tcp_do_close) { + fptr_ok(fptr_whitelist_comm_point( + c->callback)); + (void)(*c->callback)(c, c->cb_arg, + NETEVENT_CLOSED, NULL); + } + } + return; + } + if(event&EV_TIMEOUT) { + verbose(VERB_QUERY, "tcp took too long, dropped"); + reclaim_tcp_handler(c); + if(!c->tcp_do_close) { + fptr_ok(fptr_whitelist_comm_point(c->callback)); + (void)(*c->callback)(c, c->cb_arg, + NETEVENT_TIMEOUT, NULL); + } + return; + } + log_err("Ignored event %d for tcphdl.", event); +} + +void comm_point_local_handle_callback(int fd, short event, void* arg) +{ + struct comm_point* c = (struct comm_point*)arg; + log_assert(c->type == comm_local); + comm_base_now(c->ev->base); + + if(event&EV_READ) { + if(!comm_point_tcp_handle_read(fd, c, 1)) { + fptr_ok(fptr_whitelist_comm_point(c->callback)); + (void)(*c->callback)(c, c->cb_arg, NETEVENT_CLOSED, + NULL); + } + return; + } + log_err("Ignored event %d for localhdl.", event); +} + +void comm_point_raw_handle_callback(int ATTR_UNUSED(fd), + short event, void* arg) +{ + struct comm_point* c = (struct comm_point*)arg; + int err = NETEVENT_NOERROR; + log_assert(c->type == comm_raw); + comm_base_now(c->ev->base); + + if(event&EV_TIMEOUT) + err = NETEVENT_TIMEOUT; + fptr_ok(fptr_whitelist_comm_point_raw(c->callback)); + (void)(*c->callback)(c, c->cb_arg, err, NULL); +} + +struct comm_point* +comm_point_create_udp(struct comm_base *base, int fd, sldns_buffer* buffer, + comm_point_callback_t* callback, void* callback_arg) +{ + struct comm_point* c = (struct comm_point*)calloc(1, + sizeof(struct comm_point)); + short evbits; + if(!c) + return NULL; + c->ev = (struct internal_event*)calloc(1, + sizeof(struct internal_event)); + if(!c->ev) { + free(c); + return NULL; + } + c->ev->base = base; + c->fd = fd; + c->buffer = buffer; + c->timeout = NULL; + c->tcp_is_reading = 0; + c->tcp_byte_count = 0; + c->tcp_parent = NULL; + c->max_tcp_count = 0; + c->tcp_handlers = NULL; + c->tcp_free = NULL; + c->type = comm_udp; + c->tcp_do_close = 0; + c->do_not_close = 0; + c->tcp_do_toggle_rw = 0; + c->tcp_check_nb_connect = 0; + c->inuse = 0; + c->callback = callback; + c->cb_arg = callback_arg; + evbits = EV_READ | EV_PERSIST; + /* libevent stuff */ + event_set(&c->ev->ev, c->fd, evbits, comm_point_udp_callback, c); + if(event_base_set(base->eb->base, &c->ev->ev) != 0) { + log_err("could not baseset udp event"); + comm_point_delete(c); + return NULL; + } + if(fd!=-1 && event_add(&c->ev->ev, c->timeout) != 0 ) { + log_err("could not add udp event"); + comm_point_delete(c); + return NULL; + } + return c; +} + +struct comm_point* +comm_point_create_udp_ancil(struct comm_base *base, int fd, + sldns_buffer* buffer, + comm_point_callback_t* callback, void* callback_arg) +{ + struct comm_point* c = (struct comm_point*)calloc(1, + sizeof(struct comm_point)); + short evbits; + if(!c) + return NULL; + c->ev = (struct internal_event*)calloc(1, + sizeof(struct internal_event)); + if(!c->ev) { + free(c); + return NULL; + } + c->ev->base = base; + c->fd = fd; + c->buffer = buffer; + c->timeout = NULL; + c->tcp_is_reading = 0; + c->tcp_byte_count = 0; + c->tcp_parent = NULL; + c->max_tcp_count = 0; + c->tcp_handlers = NULL; + c->tcp_free = NULL; + c->type = comm_udp; + c->tcp_do_close = 0; + c->do_not_close = 0; + c->inuse = 0; + c->tcp_do_toggle_rw = 0; + c->tcp_check_nb_connect = 0; + c->callback = callback; + c->cb_arg = callback_arg; + evbits = EV_READ | EV_PERSIST; + /* libevent stuff */ + event_set(&c->ev->ev, c->fd, evbits, comm_point_udp_ancil_callback, c); + if(event_base_set(base->eb->base, &c->ev->ev) != 0) { + log_err("could not baseset udp event"); + comm_point_delete(c); + return NULL; + } + if(fd!=-1 && event_add(&c->ev->ev, c->timeout) != 0 ) { + log_err("could not add udp event"); + comm_point_delete(c); + return NULL; + } + return c; +} + +static struct comm_point* +comm_point_create_tcp_handler(struct comm_base *base, + struct comm_point* parent, size_t bufsize, + comm_point_callback_t* callback, void* callback_arg) +{ + struct comm_point* c = (struct comm_point*)calloc(1, + sizeof(struct comm_point)); + short evbits; + if(!c) + return NULL; + c->ev = (struct internal_event*)calloc(1, + sizeof(struct internal_event)); + if(!c->ev) { + free(c); + return NULL; + } + c->ev->base = base; + c->fd = -1; + c->buffer = sldns_buffer_new(bufsize); + if(!c->buffer) { + free(c->ev); + free(c); + return NULL; + } + c->timeout = (struct timeval*)malloc(sizeof(struct timeval)); + if(!c->timeout) { + sldns_buffer_free(c->buffer); + free(c->ev); + free(c); + return NULL; + } + c->tcp_is_reading = 0; + c->tcp_byte_count = 0; + c->tcp_parent = parent; + c->max_tcp_count = 0; + c->tcp_handlers = NULL; + c->tcp_free = NULL; + c->type = comm_tcp; + c->tcp_do_close = 0; + c->do_not_close = 0; + c->tcp_do_toggle_rw = 1; + c->tcp_check_nb_connect = 0; + c->repinfo.c = c; + c->callback = callback; + c->cb_arg = callback_arg; + /* add to parent free list */ + c->tcp_free = parent->tcp_free; + parent->tcp_free = c; + /* libevent stuff */ + evbits = EV_PERSIST | EV_READ | EV_TIMEOUT; + event_set(&c->ev->ev, c->fd, evbits, comm_point_tcp_handle_callback, c); + if(event_base_set(base->eb->base, &c->ev->ev) != 0) + { + log_err("could not basetset tcphdl event"); + parent->tcp_free = c->tcp_free; + free(c->ev); + free(c); + return NULL; + } + return c; +} + +struct comm_point* +comm_point_create_tcp(struct comm_base *base, int fd, int num, size_t bufsize, + comm_point_callback_t* callback, void* callback_arg) +{ + struct comm_point* c = (struct comm_point*)calloc(1, + sizeof(struct comm_point)); + short evbits; + int i; + /* first allocate the TCP accept listener */ + if(!c) + return NULL; + c->ev = (struct internal_event*)calloc(1, + sizeof(struct internal_event)); + if(!c->ev) { + free(c); + return NULL; + } + c->ev->base = base; + c->fd = fd; + c->buffer = NULL; + c->timeout = NULL; + c->tcp_is_reading = 0; + c->tcp_byte_count = 0; + c->tcp_parent = NULL; + c->max_tcp_count = num; + c->tcp_handlers = (struct comm_point**)calloc((size_t)num, + sizeof(struct comm_point*)); + if(!c->tcp_handlers) { + free(c->ev); + free(c); + return NULL; + } + c->tcp_free = NULL; + c->type = comm_tcp_accept; + c->tcp_do_close = 0; + c->do_not_close = 0; + c->tcp_do_toggle_rw = 0; + c->tcp_check_nb_connect = 0; + c->callback = NULL; + c->cb_arg = NULL; + evbits = EV_READ | EV_PERSIST; + /* libevent stuff */ + event_set(&c->ev->ev, c->fd, evbits, comm_point_tcp_accept_callback, c); + if(event_base_set(base->eb->base, &c->ev->ev) != 0 || + event_add(&c->ev->ev, c->timeout) != 0 ) + { + log_err("could not add tcpacc event"); + comm_point_delete(c); + return NULL; + } + + /* now prealloc the tcp handlers */ + for(i=0; i<num; i++) { + c->tcp_handlers[i] = comm_point_create_tcp_handler(base, + c, bufsize, callback, callback_arg); + if(!c->tcp_handlers[i]) { + comm_point_delete(c); + return NULL; + } + } + + return c; +} + +struct comm_point* +comm_point_create_tcp_out(struct comm_base *base, size_t bufsize, + comm_point_callback_t* callback, void* callback_arg) +{ + struct comm_point* c = (struct comm_point*)calloc(1, + sizeof(struct comm_point)); + short evbits; + if(!c) + return NULL; + c->ev = (struct internal_event*)calloc(1, + sizeof(struct internal_event)); + if(!c->ev) { + free(c); + return NULL; + } + c->ev->base = base; + c->fd = -1; + c->buffer = sldns_buffer_new(bufsize); + if(!c->buffer) { + free(c->ev); + free(c); + return NULL; + } + c->timeout = NULL; + c->tcp_is_reading = 0; + c->tcp_byte_count = 0; + c->tcp_parent = NULL; + c->max_tcp_count = 0; + c->tcp_handlers = NULL; + c->tcp_free = NULL; + c->type = comm_tcp; + c->tcp_do_close = 0; + c->do_not_close = 0; + c->tcp_do_toggle_rw = 1; + c->tcp_check_nb_connect = 1; + c->repinfo.c = c; + c->callback = callback; + c->cb_arg = callback_arg; + evbits = EV_PERSIST | EV_WRITE; + event_set(&c->ev->ev, c->fd, evbits, comm_point_tcp_handle_callback, c); + if(event_base_set(base->eb->base, &c->ev->ev) != 0) + { + log_err("could not basetset tcpout event"); + sldns_buffer_free(c->buffer); + free(c->ev); + free(c); + return NULL; + } + + return c; +} + +struct comm_point* +comm_point_create_local(struct comm_base *base, int fd, size_t bufsize, + comm_point_callback_t* callback, void* callback_arg) +{ + struct comm_point* c = (struct comm_point*)calloc(1, + sizeof(struct comm_point)); + short evbits; + if(!c) + return NULL; + c->ev = (struct internal_event*)calloc(1, + sizeof(struct internal_event)); + if(!c->ev) { + free(c); + return NULL; + } + c->ev->base = base; + c->fd = fd; + c->buffer = sldns_buffer_new(bufsize); + if(!c->buffer) { + free(c->ev); + free(c); + return NULL; + } + c->timeout = NULL; + c->tcp_is_reading = 1; + c->tcp_byte_count = 0; + c->tcp_parent = NULL; + c->max_tcp_count = 0; + c->tcp_handlers = NULL; + c->tcp_free = NULL; + c->type = comm_local; + c->tcp_do_close = 0; + c->do_not_close = 1; + c->tcp_do_toggle_rw = 0; + c->tcp_check_nb_connect = 0; + c->callback = callback; + c->cb_arg = callback_arg; + /* libevent stuff */ + evbits = EV_PERSIST | EV_READ; + event_set(&c->ev->ev, c->fd, evbits, comm_point_local_handle_callback, + c); + if(event_base_set(base->eb->base, &c->ev->ev) != 0 || + event_add(&c->ev->ev, c->timeout) != 0 ) + { + log_err("could not add localhdl event"); + free(c->ev); + free(c); + return NULL; + } + return c; +} + +struct comm_point* +comm_point_create_raw(struct comm_base* base, int fd, int writing, + comm_point_callback_t* callback, void* callback_arg) +{ + struct comm_point* c = (struct comm_point*)calloc(1, + sizeof(struct comm_point)); + short evbits; + if(!c) + return NULL; + c->ev = (struct internal_event*)calloc(1, + sizeof(struct internal_event)); + if(!c->ev) { + free(c); + return NULL; + } + c->ev->base = base; + c->fd = fd; + c->buffer = NULL; + c->timeout = NULL; + c->tcp_is_reading = 0; + c->tcp_byte_count = 0; + c->tcp_parent = NULL; + c->max_tcp_count = 0; + c->tcp_handlers = NULL; + c->tcp_free = NULL; + c->type = comm_raw; + c->tcp_do_close = 0; + c->do_not_close = 1; + c->tcp_do_toggle_rw = 0; + c->tcp_check_nb_connect = 0; + c->callback = callback; + c->cb_arg = callback_arg; + /* libevent stuff */ + if(writing) + evbits = EV_PERSIST | EV_WRITE; + else evbits = EV_PERSIST | EV_READ; + event_set(&c->ev->ev, c->fd, evbits, comm_point_raw_handle_callback, + c); + if(event_base_set(base->eb->base, &c->ev->ev) != 0 || + event_add(&c->ev->ev, c->timeout) != 0 ) + { + log_err("could not add rawhdl event"); + free(c->ev); + free(c); + return NULL; + } + return c; +} + +void +comm_point_close(struct comm_point* c) +{ + if(!c) + return; + if(c->fd != -1) + if(event_del(&c->ev->ev) != 0) { + log_err("could not event_del on close"); + } + /* close fd after removing from event lists, or epoll.. is messed up */ + if(c->fd != -1 && !c->do_not_close) { + verbose(VERB_ALGO, "close fd %d", c->fd); +#ifndef USE_WINSOCK + close(c->fd); +#else + closesocket(c->fd); +#endif + } + c->fd = -1; +} + +void +comm_point_delete(struct comm_point* c) +{ + if(!c) + return; + if(c->type == comm_tcp && c->ssl) { +#ifdef HAVE_SSL + SSL_shutdown(c->ssl); + SSL_free(c->ssl); +#endif + } + comm_point_close(c); + if(c->tcp_handlers) { + int i; + for(i=0; i<c->max_tcp_count; i++) + comm_point_delete(c->tcp_handlers[i]); + free(c->tcp_handlers); + } + free(c->timeout); + if(c->type == comm_tcp || c->type == comm_local) + sldns_buffer_free(c->buffer); + free(c->ev); + free(c); +} + +void +comm_point_send_reply(struct comm_reply *repinfo) +{ + log_assert(repinfo && repinfo->c); + if(repinfo->c->type == comm_udp) { + if(repinfo->srctype) + comm_point_send_udp_msg_if(repinfo->c, + repinfo->c->buffer, (struct sockaddr*)&repinfo->addr, + repinfo->addrlen, repinfo); + else + comm_point_send_udp_msg(repinfo->c, repinfo->c->buffer, + (struct sockaddr*)&repinfo->addr, repinfo->addrlen); +#ifdef USE_DNSTAP + if(repinfo->c->dtenv != NULL && + repinfo->c->dtenv->log_client_response_messages) + dt_msg_send_client_response(repinfo->c->dtenv, + &repinfo->addr, repinfo->c->type, repinfo->c->buffer); +#endif + } else { +#ifdef USE_DNSTAP + if(repinfo->c->tcp_parent->dtenv != NULL && + repinfo->c->tcp_parent->dtenv->log_client_response_messages) + dt_msg_send_client_response(repinfo->c->tcp_parent->dtenv, + &repinfo->addr, repinfo->c->type, repinfo->c->buffer); +#endif + comm_point_start_listening(repinfo->c, -1, TCP_QUERY_TIMEOUT); + } +} + +void +comm_point_drop_reply(struct comm_reply* repinfo) +{ + if(!repinfo) + return; + log_assert(repinfo && repinfo->c); + log_assert(repinfo->c->type != comm_tcp_accept); + if(repinfo->c->type == comm_udp) + return; + reclaim_tcp_handler(repinfo->c); +} + +void +comm_point_stop_listening(struct comm_point* c) +{ + verbose(VERB_ALGO, "comm point stop listening %d", c->fd); + if(event_del(&c->ev->ev) != 0) { + log_err("event_del error to stoplisten"); + } +} + +void +comm_point_start_listening(struct comm_point* c, int newfd, int sec) +{ + verbose(VERB_ALGO, "comm point start listening %d", + c->fd==-1?newfd:c->fd); + if(c->type == comm_tcp_accept && !c->tcp_free) { + /* no use to start listening no free slots. */ + return; + } + if(sec != -1 && sec != 0) { + if(!c->timeout) { + c->timeout = (struct timeval*)malloc(sizeof( + struct timeval)); + if(!c->timeout) { + log_err("cpsl: malloc failed. No net read."); + return; + } + } + c->ev->ev.ev_events |= EV_TIMEOUT; +#ifndef S_SPLINT_S /* splint fails on struct timeval. */ + c->timeout->tv_sec = sec; + c->timeout->tv_usec = 0; +#endif /* S_SPLINT_S */ + } + if(c->type == comm_tcp) { + c->ev->ev.ev_events &= ~(EV_READ|EV_WRITE); + if(c->tcp_is_reading) + c->ev->ev.ev_events |= EV_READ; + else c->ev->ev.ev_events |= EV_WRITE; + } + if(newfd != -1) { + if(c->fd != -1) { +#ifndef USE_WINSOCK + close(c->fd); +#else + closesocket(c->fd); +#endif + } + c->fd = newfd; + c->ev->ev.ev_fd = c->fd; + } + if(event_add(&c->ev->ev, sec==0?NULL:c->timeout) != 0) { + log_err("event_add failed. in cpsl."); + } +} + +void comm_point_listen_for_rw(struct comm_point* c, int rd, int wr) +{ + verbose(VERB_ALGO, "comm point listen_for_rw %d %d", c->fd, wr); + if(event_del(&c->ev->ev) != 0) { + log_err("event_del error to cplf"); + } + c->ev->ev.ev_events &= ~(EV_READ|EV_WRITE); + if(rd) c->ev->ev.ev_events |= EV_READ; + if(wr) c->ev->ev.ev_events |= EV_WRITE; + if(event_add(&c->ev->ev, c->timeout) != 0) { + log_err("event_add failed. in cplf."); + } +} + +size_t comm_point_get_mem(struct comm_point* c) +{ + size_t s; + if(!c) + return 0; + s = sizeof(*c) + sizeof(*c->ev); + if(c->timeout) + s += sizeof(*c->timeout); + if(c->type == comm_tcp || c->type == comm_local) + s += sizeof(*c->buffer) + sldns_buffer_capacity(c->buffer); + if(c->type == comm_tcp_accept) { + int i; + for(i=0; i<c->max_tcp_count; i++) + s += comm_point_get_mem(c->tcp_handlers[i]); + } + return s; +} + +struct comm_timer* +comm_timer_create(struct comm_base* base, void (*cb)(void*), void* cb_arg) +{ + struct comm_timer *tm = (struct comm_timer*)calloc(1, + sizeof(struct comm_timer)); + if(!tm) + return NULL; + tm->ev_timer = (struct internal_timer*)calloc(1, + sizeof(struct internal_timer)); + if(!tm->ev_timer) { + log_err("malloc failed"); + free(tm); + return NULL; + } + tm->ev_timer->base = base; + tm->callback = cb; + tm->cb_arg = cb_arg; + event_set(&tm->ev_timer->ev, -1, EV_TIMEOUT, + comm_timer_callback, tm); + if(event_base_set(base->eb->base, &tm->ev_timer->ev) != 0) { + log_err("timer_create: event_base_set failed."); + free(tm->ev_timer); + free(tm); + return NULL; + } + return tm; +} + +void +comm_timer_disable(struct comm_timer* timer) +{ + if(!timer) + return; + evtimer_del(&timer->ev_timer->ev); + timer->ev_timer->enabled = 0; +} + +void +comm_timer_set(struct comm_timer* timer, struct timeval* tv) +{ + log_assert(tv); + if(timer->ev_timer->enabled) + comm_timer_disable(timer); + event_set(&timer->ev_timer->ev, -1, EV_TIMEOUT, + comm_timer_callback, timer); + if(event_base_set(timer->ev_timer->base->eb->base, + &timer->ev_timer->ev) != 0) + log_err("comm_timer_set: set_base failed."); + if(evtimer_add(&timer->ev_timer->ev, tv) != 0) + log_err("comm_timer_set: evtimer_add failed."); + timer->ev_timer->enabled = 1; +} + +void +comm_timer_delete(struct comm_timer* timer) +{ + if(!timer) + return; + comm_timer_disable(timer); + free(timer->ev_timer); + free(timer); +} + +void +comm_timer_callback(int ATTR_UNUSED(fd), short event, void* arg) +{ + struct comm_timer* tm = (struct comm_timer*)arg; + if(!(event&EV_TIMEOUT)) + return; + comm_base_now(tm->ev_timer->base); + tm->ev_timer->enabled = 0; + fptr_ok(fptr_whitelist_comm_timer(tm->callback)); + (*tm->callback)(tm->cb_arg); +} + +int +comm_timer_is_set(struct comm_timer* timer) +{ + return (int)timer->ev_timer->enabled; +} + +size_t +comm_timer_get_mem(struct comm_timer* timer) +{ + return sizeof(*timer) + sizeof(struct internal_timer); +} + +struct comm_signal* +comm_signal_create(struct comm_base* base, + void (*callback)(int, void*), void* cb_arg) +{ + struct comm_signal* com = (struct comm_signal*)malloc( + sizeof(struct comm_signal)); + if(!com) { + log_err("malloc failed"); + return NULL; + } + com->base = base; + com->callback = callback; + com->cb_arg = cb_arg; + com->ev_signal = NULL; + return com; +} + +void +comm_signal_callback(int sig, short event, void* arg) +{ + struct comm_signal* comsig = (struct comm_signal*)arg; + if(!(event & EV_SIGNAL)) + return; + comm_base_now(comsig->base); + fptr_ok(fptr_whitelist_comm_signal(comsig->callback)); + (*comsig->callback)(sig, comsig->cb_arg); +} + +int +comm_signal_bind(struct comm_signal* comsig, int sig) +{ + struct internal_signal* entry = (struct internal_signal*)calloc(1, + sizeof(struct internal_signal)); + if(!entry) { + log_err("malloc failed"); + return 0; + } + log_assert(comsig); + /* add signal event */ + signal_set(&entry->ev, sig, comm_signal_callback, comsig); + if(event_base_set(comsig->base->eb->base, &entry->ev) != 0) { + log_err("Could not set signal base"); + free(entry); + return 0; + } + if(signal_add(&entry->ev, NULL) != 0) { + log_err("Could not add signal handler"); + free(entry); + return 0; + } + /* link into list */ + entry->next = comsig->ev_signal; + comsig->ev_signal = entry; + return 1; +} + +void +comm_signal_delete(struct comm_signal* comsig) +{ + struct internal_signal* p, *np; + if(!comsig) + return; + p=comsig->ev_signal; + while(p) { + np = p->next; + signal_del(&p->ev); + free(p); + p = np; + } + free(comsig); +} diff --git a/external/unbound/util/netevent.h b/external/unbound/util/netevent.h new file mode 100644 index 000000000..37322ab93 --- /dev/null +++ b/external/unbound/util/netevent.h @@ -0,0 +1,703 @@ +/* + * util/netevent.h - event notification + * + * Copyright (c) 2007, NLnet Labs. All rights reserved. + * + * This software is open source. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * Neither the name of the NLNET LABS nor the names of its contributors may + * be used to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/** + * \file + * + * This file contains event notification functions. + * + * There are three types of communication points + * o UDP socket - perthread buffer. + * o TCP-accept socket - array of TCP-sockets, socketcount. + * o TCP socket - own buffer, parent-TCPaccept, read/write state, + * number of bytes read/written, timeout. + * + * There are sockets aimed towards our clients and towards the internet. + * o frontside - aimed towards our clients, queries come in, answers back. + * o behind - aimed towards internet, to the authoritative DNS servers. + * + * Several event types are available: + * o comm_base - for thread safety of the comm points, one per thread. + * o comm_point - udp and tcp networking, with callbacks. + * o comm_timer - a timeout with callback. + * o comm_signal - callbacks when signal is caught. + * o comm_reply - holds reply info during networking callback. + * + */ + +#ifndef NET_EVENT_H +#define NET_EVENT_H + +struct sldns_buffer; +struct comm_point; +struct comm_reply; +struct event_base; + +/* internal event notification data storage structure. */ +struct internal_event; +struct internal_base; +struct internal_timer; + +/** callback from communication point function type */ +typedef int comm_point_callback_t(struct comm_point*, void*, int, + struct comm_reply*); + +/** to pass no_error to callback function */ +#define NETEVENT_NOERROR 0 +/** to pass closed connection to callback function */ +#define NETEVENT_CLOSED -1 +/** to pass timeout happened to callback function */ +#define NETEVENT_TIMEOUT -2 +/** to pass fallback from capsforID to callback function; 0x20 failed */ +#define NETEVENT_CAPSFAIL -3 + +/** timeout to slow accept calls when not possible, in msec. */ +#define NETEVENT_SLOW_ACCEPT_TIME 2000 + +/** + * A communication point dispatcher. Thread specific. + */ +struct comm_base { + /** behind the scenes structure. with say libevent info. alloced */ + struct internal_base* eb; + /** callback to stop listening on accept sockets, + * performed when accept() will not function properly */ + void (*stop_accept)(void*); + /** callback to start listening on accept sockets, performed + * after stop_accept() then a timeout has passed. */ + void (*start_accept)(void*); + /** user argument for stop_accept and start_accept functions */ + void* cb_arg; +}; + +/** + * Reply information for a communication point. + */ +struct comm_reply { + /** the comm_point with fd to send reply on to. */ + struct comm_point* c; + /** the address (for UDP based communication) */ + struct sockaddr_storage addr; + /** length of address */ + socklen_t addrlen; + /** return type 0 (none), 4(IP4), 6(IP6) */ + int srctype; + /** the return source interface data */ + union { +#ifdef IPV6_PKTINFO + struct in6_pktinfo v6info; +#endif +#ifdef IP_PKTINFO + struct in_pktinfo v4info; +#elif defined(IP_RECVDSTADDR) + struct in_addr v4addr; +#endif + } + /** variable with return source data */ + pktinfo; +}; + +/** + * Communication point to the network + * These behaviours can be accomplished by setting the flags + * and passing return values from the callback. + * udp frontside: called after readdone. sendafter. + * tcp frontside: called readdone, sendafter. close. + * udp behind: called after readdone. No send after. + * tcp behind: write done, read done, then called. No send after. + */ +struct comm_point { + /** behind the scenes structure, with say libevent info. alloced. */ + struct internal_event* ev; + + /** file descriptor for communication point */ + int fd; + + /** timeout (NULL if it does not). Malloced. */ + struct timeval* timeout; + + /** buffer pointer. Either to perthread, or own buffer or NULL */ + struct sldns_buffer* buffer; + + /* -------- TCP Handler -------- */ + /** Read/Write state for TCP */ + int tcp_is_reading; + /** The current read/write count for TCP */ + size_t tcp_byte_count; + /** parent communication point (for TCP sockets) */ + struct comm_point* tcp_parent; + /** sockaddr from peer, for TCP handlers */ + struct comm_reply repinfo; + + /* -------- TCP Accept -------- */ + /** the number of TCP handlers for this tcp-accept socket */ + int max_tcp_count; + /** malloced array of tcp handlers for a tcp-accept, + of size max_tcp_count. */ + struct comm_point** tcp_handlers; + /** linked list of free tcp_handlers to use for new queries. + For tcp_accept the first entry, for tcp_handlers the next one. */ + struct comm_point* tcp_free; + + /* -------- SSL TCP DNS ------- */ + /** the SSL object with rw bio (owned) or for commaccept ctx ref */ + void* ssl; + /** handshake state for init and renegotiate */ + enum { + /** no handshake, it has been done */ + comm_ssl_shake_none = 0, + /** ssl initial handshake wants to read */ + comm_ssl_shake_read, + /** ssl initial handshake wants to write */ + comm_ssl_shake_write, + /** ssl_write wants to read */ + comm_ssl_shake_hs_read, + /** ssl_read wants to write */ + comm_ssl_shake_hs_write + } ssl_shake_state; + + /* -------- dnstap ------- */ + /** the dnstap environment */ + struct dt_env* dtenv; + + /** is this a UDP, TCP-accept or TCP socket. */ + enum comm_point_type { + /** UDP socket - handle datagrams. */ + comm_udp, + /** TCP accept socket - only creates handlers if readable. */ + comm_tcp_accept, + /** TCP handler socket - handle byteperbyte readwrite. */ + comm_tcp, + /** AF_UNIX socket - for internal commands. */ + comm_local, + /** raw - not DNS format - for pipe readers and writers */ + comm_raw + } + /** variable with type of socket, UDP,TCP-accept,TCP,pipe */ + type; + + /* ---------- Behaviour ----------- */ + /** if set the connection is NOT closed on delete. */ + int do_not_close; + + /** if set, the connection is closed on error, on timeout, + and after read/write completes. No callback is done. */ + int tcp_do_close; + + /** if set, read/write completes: + read/write state of tcp is toggled. + buffer reset/bytecount reset. + this flag cleared. + So that when that is done the callback is called. */ + int tcp_do_toggle_rw; + + /** if set, checks for pending error from nonblocking connect() call.*/ + int tcp_check_nb_connect; + + /** number of queries outstanding on this socket, used by + * outside network for udp ports */ + int inuse; + + /** callback when done. + tcp_accept does not get called back, is NULL then. + If a timeout happens, callback with timeout=1 is called. + If an error happens, callback is called with error set + nonzero. If not NETEVENT_NOERROR, it is an errno value. + If the connection is closed (by remote end) then the + callback is called with error set to NETEVENT_CLOSED=-1. + If a timeout happens on the connection, the error is set to + NETEVENT_TIMEOUT=-2. + The reply_info can be copied if the reply needs to happen at a + later time. It consists of a struct with commpoint and address. + It can be passed to a msg send routine some time later. + Note the reply information is temporary and must be copied. + NULL is passed for_reply info, in cases where error happened. + + declare as: + int my_callback(struct comm_point* c, void* my_arg, int error, + struct comm_reply *reply_info); + + if the routine returns 0, nothing is done. + Notzero, the buffer will be sent back to client. + For UDP this is done without changing the commpoint. + In TCP it sets write state. + */ + comm_point_callback_t* callback; + /** argument to pass to callback. */ + void *cb_arg; +}; + +/** + * Structure only for making timeout events. + */ +struct comm_timer { + /** the internal event stuff */ + struct internal_timer* ev_timer; + + /** callback function, takes user arg only */ + void (*callback)(void*); + + /** callback user argument */ + void* cb_arg; +}; + +/** + * Structure only for signal events. + */ +struct comm_signal { + /** the communication base */ + struct comm_base* base; + + /** the internal event stuff */ + struct internal_signal* ev_signal; + + /** callback function, takes signal number and user arg */ + void (*callback)(int, void*); + + /** callback user argument */ + void* cb_arg; +}; + +/** + * Create a new comm base. + * @param sigs: if true it attempts to create a default loop for + * signal handling. + * @return: the new comm base. NULL on error. + */ +struct comm_base* comm_base_create(int sigs); + +/** + * Create comm base that uses the given event_base (underlying event + * mechanism pointer). + * @param base: underlying lib event base. + * @return: the new comm base. NULL on error. + */ +struct comm_base* comm_base_create_event(struct event_base* base); + +/** + * Delete comm base structure but not the underlying lib event base. + * All comm points must have been deleted. + * @param b: the base to delete. + */ +void comm_base_delete_no_base(struct comm_base* b); + +/** + * Destroy a comm base. + * All comm points must have been deleted. + * @param b: the base to delete. + */ +void comm_base_delete(struct comm_base* b); + +/** + * Obtain two pointers. The pointers never change (until base_delete()). + * The pointers point to time values that are updated regularly. + * @param b: the communication base that will update the time values. + * @param tt: pointer to time in seconds is returned. + * @param tv: pointer to time in microseconds is returned. + */ +void comm_base_timept(struct comm_base* b, time_t** tt, struct timeval** tv); + +/** + * Dispatch the comm base events. + * @param b: the communication to perform. + */ +void comm_base_dispatch(struct comm_base* b); + +/** + * Exit from dispatch loop. + * @param b: the communication base that is in dispatch(). + */ +void comm_base_exit(struct comm_base* b); + +/** + * Set the slow_accept mode handlers. You can not provide these if you do + * not perform accept() calls. + * @param b: comm base + * @param stop_accept: function that stops listening to accept fds. + * @param start_accept: function that resumes listening to accept fds. + * @param arg: callback arg to pass to the functions. + */ +void comm_base_set_slow_accept_handlers(struct comm_base* b, + void (*stop_accept)(void*), void (*start_accept)(void*), void* arg); + +/** + * Access internal data structure (for util/tube.c on windows) + * @param b: comm base + * @return event_base. Could be libevent, or internal event handler. + */ +struct event_base* comm_base_internal(struct comm_base* b); + +/** + * Create an UDP comm point. Calls malloc. + * setups the structure with the parameters you provide. + * @param base: in which base to alloc the commpoint. + * @param fd : file descriptor of open UDP socket. + * @param buffer: shared buffer by UDP sockets from this thread. + * @param callback: callback function pointer. + * @param callback_arg: will be passed to your callback function. + * @return: returns the allocated communication point. NULL on error. + * Sets timeout to NULL. Turns off TCP options. + */ +struct comm_point* comm_point_create_udp(struct comm_base* base, + int fd, struct sldns_buffer* buffer, + comm_point_callback_t* callback, void* callback_arg); + +/** + * Create an UDP with ancillary data comm point. Calls malloc. + * Uses recvmsg instead of recv to get udp message. + * setups the structure with the parameters you provide. + * @param base: in which base to alloc the commpoint. + * @param fd : file descriptor of open UDP socket. + * @param buffer: shared buffer by UDP sockets from this thread. + * @param callback: callback function pointer. + * @param callback_arg: will be passed to your callback function. + * @return: returns the allocated communication point. NULL on error. + * Sets timeout to NULL. Turns off TCP options. + */ +struct comm_point* comm_point_create_udp_ancil(struct comm_base* base, + int fd, struct sldns_buffer* buffer, + comm_point_callback_t* callback, void* callback_arg); + +/** + * Create a TCP listener comm point. Calls malloc. + * Setups the structure with the parameters you provide. + * Also Creates TCP Handlers, pre allocated for you. + * Uses the parameters you provide. + * @param base: in which base to alloc the commpoint. + * @param fd: file descriptor of open TCP socket set to listen nonblocking. + * @param num: becomes max_tcp_count, the routine allocates that + * many tcp handler commpoints. + * @param bufsize: size of buffer to create for handlers. + * @param callback: callback function pointer for TCP handlers. + * @param callback_arg: will be passed to your callback function. + * @return: returns the TCP listener commpoint. You can find the + * TCP handlers in the array inside the listener commpoint. + * returns NULL on error. + * Inits timeout to NULL. All handlers are on the free list. + */ +struct comm_point* comm_point_create_tcp(struct comm_base* base, + int fd, int num, size_t bufsize, + comm_point_callback_t* callback, void* callback_arg); + +/** + * Create an outgoing TCP commpoint. No file descriptor is opened, left at -1. + * @param base: in which base to alloc the commpoint. + * @param bufsize: size of buffer to create for handlers. + * @param callback: callback function pointer for the handler. + * @param callback_arg: will be passed to your callback function. + * @return: the commpoint or NULL on error. + */ +struct comm_point* comm_point_create_tcp_out(struct comm_base* base, + size_t bufsize, comm_point_callback_t* callback, void* callback_arg); + +/** + * Create commpoint to listen to a local domain file descriptor. + * @param base: in which base to alloc the commpoint. + * @param fd: file descriptor of open AF_UNIX socket set to listen nonblocking. + * @param bufsize: size of buffer to create for handlers. + * @param callback: callback function pointer for the handler. + * @param callback_arg: will be passed to your callback function. + * @return: the commpoint or NULL on error. + */ +struct comm_point* comm_point_create_local(struct comm_base* base, + int fd, size_t bufsize, + comm_point_callback_t* callback, void* callback_arg); + +/** + * Create commpoint to listen to a local domain pipe descriptor. + * @param base: in which base to alloc the commpoint. + * @param fd: file descriptor. + * @param writing: true if you want to listen to writes, false for reads. + * @param callback: callback function pointer for the handler. + * @param callback_arg: will be passed to your callback function. + * @return: the commpoint or NULL on error. + */ +struct comm_point* comm_point_create_raw(struct comm_base* base, + int fd, int writing, + comm_point_callback_t* callback, void* callback_arg); + +/** + * Close a comm point fd. + * @param c: comm point to close. + */ +void comm_point_close(struct comm_point* c); + +/** + * Close and deallocate (free) the comm point. If the comm point is + * a tcp-accept point, also its tcp-handler points are deleted. + * @param c: comm point to delete. + */ +void comm_point_delete(struct comm_point* c); + +/** + * Send reply. Put message into commpoint buffer. + * @param repinfo: The reply info copied from a commpoint callback call. + */ +void comm_point_send_reply(struct comm_reply* repinfo); + +/** + * Drop reply. Cleans up. + * @param repinfo: The reply info copied from a commpoint callback call. + */ +void comm_point_drop_reply(struct comm_reply* repinfo); + +/** + * Send an udp message over a commpoint. + * @param c: commpoint to send it from. + * @param packet: what to send. + * @param addr: where to send it to. + * @param addrlen: length of addr. + * @return: false on a failure. + */ +int comm_point_send_udp_msg(struct comm_point* c, struct sldns_buffer* packet, + struct sockaddr* addr, socklen_t addrlen); + +/** + * Stop listening for input on the commpoint. No callbacks will happen. + * @param c: commpoint to disable. The fd is not closed. + */ +void comm_point_stop_listening(struct comm_point* c); + +/** + * Start listening again for input on the comm point. + * @param c: commpoint to enable again. + * @param newfd: new fd, or -1 to leave fd be. + * @param sec: timeout in seconds, or -1 for no (change to the) timeout. + */ +void comm_point_start_listening(struct comm_point* c, int newfd, int sec); + +/** + * Stop listening and start listening again for reading or writing. + * @param c: commpoint + * @param rd: if true, listens for reading. + * @param wr: if true, listens for writing. + */ +void comm_point_listen_for_rw(struct comm_point* c, int rd, int wr); + +/** + * Get size of memory used by comm point. + * For TCP handlers this includes subhandlers. + * For UDP handlers, this does not include the (shared) UDP buffer. + * @param c: commpoint. + * @return size in bytes. + */ +size_t comm_point_get_mem(struct comm_point* c); + +/** + * create timer. Not active upon creation. + * @param base: event handling base. + * @param cb: callback function: void myfunc(void* myarg); + * @param cb_arg: user callback argument. + * @return: the new timer or NULL on error. + */ +struct comm_timer* comm_timer_create(struct comm_base* base, + void (*cb)(void*), void* cb_arg); + +/** + * disable timer. Stops callbacks from happening. + * @param timer: to disable. + */ +void comm_timer_disable(struct comm_timer* timer); + +/** + * reset timevalue for timer. + * @param timer: timer to (re)set. + * @param tv: when the timer should activate. if NULL timer is disabled. + */ +void comm_timer_set(struct comm_timer* timer, struct timeval* tv); + +/** + * delete timer. + * @param timer: to delete. + */ +void comm_timer_delete(struct comm_timer* timer); + +/** + * see if timeout has been set to a value. + * @param timer: the timer to examine. + * @return: false if disabled or not set. + */ +int comm_timer_is_set(struct comm_timer* timer); + +/** + * Get size of memory used by comm timer. + * @param timer: the timer to examine. + * @return size in bytes. + */ +size_t comm_timer_get_mem(struct comm_timer* timer); + +/** + * Create a signal handler. Call signal_bind() later to bind to a signal. + * @param base: communication base to use. + * @param callback: called when signal is caught. + * @param cb_arg: user argument to callback + * @return: the signal struct or NULL on error. + */ +struct comm_signal* comm_signal_create(struct comm_base* base, + void (*callback)(int, void*), void* cb_arg); + +/** + * Bind signal struct to catch a signal. A signle comm_signal can be bound + * to multiple signals, calling comm_signal_bind multiple times. + * @param comsig: the communication point, with callback information. + * @param sig: signal number. + * @return: true on success. false on error. + */ +int comm_signal_bind(struct comm_signal* comsig, int sig); + +/** + * Delete the signal communication point. + * @param comsig: to delete. + */ +void comm_signal_delete(struct comm_signal* comsig); + +/** + * perform accept(2) with error checking. + * @param c: commpoint with accept fd. + * @param addr: remote end returned here. + * @param addrlen: length of remote end returned here. + * @return new fd, or -1 on error. + * if -1, error message has been printed if necessary, simply drop + * out of the reading handler. + */ +int comm_point_perform_accept(struct comm_point* c, + struct sockaddr_storage* addr, socklen_t* addrlen); + +/**** internal routines ****/ + +/** + * This routine is published for checks and tests, and is only used internally. + * handle libevent callback for udp comm point. + * @param fd: file descriptor. + * @param event: event bits from libevent: + * EV_READ, EV_WRITE, EV_SIGNAL, EV_TIMEOUT. + * @param arg: the comm_point structure. + */ +void comm_point_udp_callback(int fd, short event, void* arg); + +/** + * This routine is published for checks and tests, and is only used internally. + * handle libevent callback for udp ancillary data comm point. + * @param fd: file descriptor. + * @param event: event bits from libevent: + * EV_READ, EV_WRITE, EV_SIGNAL, EV_TIMEOUT. + * @param arg: the comm_point structure. + */ +void comm_point_udp_ancil_callback(int fd, short event, void* arg); + +/** + * This routine is published for checks and tests, and is only used internally. + * handle libevent callback for tcp accept comm point + * @param fd: file descriptor. + * @param event: event bits from libevent: + * EV_READ, EV_WRITE, EV_SIGNAL, EV_TIMEOUT. + * @param arg: the comm_point structure. + */ +void comm_point_tcp_accept_callback(int fd, short event, void* arg); + +/** + * This routine is published for checks and tests, and is only used internally. + * handle libevent callback for tcp data comm point + * @param fd: file descriptor. + * @param event: event bits from libevent: + * EV_READ, EV_WRITE, EV_SIGNAL, EV_TIMEOUT. + * @param arg: the comm_point structure. + */ +void comm_point_tcp_handle_callback(int fd, short event, void* arg); + +/** + * This routine is published for checks and tests, and is only used internally. + * handle libevent callback for timer comm. + * @param fd: file descriptor (always -1). + * @param event: event bits from libevent: + * EV_READ, EV_WRITE, EV_SIGNAL, EV_TIMEOUT. + * @param arg: the comm_timer structure. + */ +void comm_timer_callback(int fd, short event, void* arg); + +/** + * This routine is published for checks and tests, and is only used internally. + * handle libevent callback for signal comm. + * @param fd: file descriptor (used for the signal number). + * @param event: event bits from libevent: + * EV_READ, EV_WRITE, EV_SIGNAL, EV_TIMEOUT. + * @param arg: the internal commsignal structure. + */ +void comm_signal_callback(int fd, short event, void* arg); + +/** + * This routine is published for checks and tests, and is only used internally. + * libevent callback for AF_UNIX fds + * @param fd: file descriptor. + * @param event: event bits from libevent: + * EV_READ, EV_WRITE, EV_SIGNAL, EV_TIMEOUT. + * @param arg: the comm_point structure. + */ +void comm_point_local_handle_callback(int fd, short event, void* arg); + +/** + * This routine is published for checks and tests, and is only used internally. + * libevent callback for raw fd access. + * @param fd: file descriptor. + * @param event: event bits from libevent: + * EV_READ, EV_WRITE, EV_SIGNAL, EV_TIMEOUT. + * @param arg: the comm_point structure. + */ +void comm_point_raw_handle_callback(int fd, short event, void* arg); + +/** + * This routine is published for checks and tests, and is only used internally. + * libevent callback for timeout on slow accept. + * @param fd: file descriptor. + * @param event: event bits from libevent: + * EV_READ, EV_WRITE, EV_SIGNAL, EV_TIMEOUT. + * @param arg: the comm_point structure. + */ +void comm_base_handle_slow_accept(int fd, short event, void* arg); + +#ifdef USE_WINSOCK +/** + * Callback for openssl BIO to on windows detect WSAEWOULDBLOCK and notify + * the winsock_event of this for proper TCP nonblocking implementation. + * @param c: comm_point, fd must be set its struct event is registered. + * @param ssl: openssl SSL, fd must be set so it has a bio. + */ +void comm_point_tcp_win_bio_cb(struct comm_point* c, void* ssl); +#endif + +/** see if errno for tcp connect has to be logged or not. This uses errno */ +int tcp_connect_errno_needs_log(struct sockaddr* addr, socklen_t addrlen); + +#endif /* NET_EVENT_H */ diff --git a/external/unbound/util/random.c b/external/unbound/util/random.c new file mode 100644 index 000000000..71f0ba53e --- /dev/null +++ b/external/unbound/util/random.c @@ -0,0 +1,166 @@ +/* + * util/random.c - thread safe random generator, which is reasonably secure. + * + * Copyright (c) 2007, NLnet Labs. All rights reserved. + * + * This software is open source. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * Neither the name of the NLNET LABS nor the names of its contributors may + * be used to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/** + * \file + * Thread safe random functions. Similar to arc4random() with an explicit + * initialisation routine. + * + * The code in this file is based on arc4random from + * openssh-4.0p1/openbsd-compat/bsd-arc4random.c + * That code is also BSD licensed. Here is their statement: + * + * Copyright (c) 1996, David Mazieres <dm@uun.org> + * Copyright (c) 2008, Damien Miller <djm@openbsd.org> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ +#include "config.h" +#include "util/random.h" +#include "util/log.h" +#include <time.h> + +#ifdef HAVE_NSS +/* nspr4 */ +#include "prerror.h" +/* nss3 */ +#include "secport.h" +#include "pk11pub.h" +#endif + +/** + * Max random value. Similar to RAND_MAX, but more portable + * (mingw uses only 15 bits random). + */ +#define MAX_VALUE 0x7fffffff + +#ifndef HAVE_NSS +void +ub_systemseed(unsigned int ATTR_UNUSED(seed)) +{ + /* arc4random_uniform does not need seeds, it gets kernel entropy */ +} + +struct ub_randstate* +ub_initstate(unsigned int ATTR_UNUSED(seed), + struct ub_randstate* ATTR_UNUSED(from)) +{ + struct ub_randstate* s = (struct ub_randstate*)malloc(1); + if(!s) { + log_err("malloc failure in random init"); + return NULL; + } + return s; +} + +long int +ub_random(struct ub_randstate* ATTR_UNUSED(s)) +{ + /* This relies on MAX_VALUE being 0x7fffffff. */ + return (long)arc4random() & MAX_VALUE; +} + +long int +ub_random_max(struct ub_randstate* state, long int x) +{ + (void)state; + /* on OpenBSD, this does not need _seed(), or _stir() calls */ + return (long)arc4random_uniform((uint32_t)x); +} + +#else + +/* not much to remember for NSS since we use its pk11_random, placeholder */ +struct ub_randstate { + int ready; +}; + +void ub_systemseed(unsigned int ATTR_UNUSED(seed)) +{ +} + +struct ub_randstate* ub_initstate(unsigned int ATTR_UNUSED(seed), + struct ub_randstate* ATTR_UNUSED(from)) +{ + struct ub_randstate* s = (struct ub_randstate*)calloc(1, sizeof(*s)); + if(!s) { + log_err("malloc failure in random init"); + return NULL; + } + return s; +} + +long int ub_random(struct ub_randstate* ATTR_UNUSED(state)) +{ + long int x; + /* random 31 bit value. */ + SECStatus s = PK11_GenerateRandom((unsigned char*)&x, (int)sizeof(x)); + if(s != SECSuccess) { + log_err("PK11_GenerateRandom error: %s", + PORT_ErrorToString(PORT_GetError())); + } + return x & MAX_VALUE; +} + +long int +ub_random_max(struct ub_randstate* state, long int x) +{ + /* make sure we fetch in a range that is divisible by x. ignore + * values from d .. MAX_VALUE, instead draw a new number */ + long int d = MAX_VALUE - (MAX_VALUE % x); /* d is divisible by x */ + long int v = ub_random(state); + while(d <= v) + v = ub_random(state); + return (v % x); +} +#endif /* HAVE_NSS */ + +void +ub_randfree(struct ub_randstate* s) +{ + if(s) + free(s); + /* user app must do RAND_cleanup(); */ +} diff --git a/external/unbound/util/random.h b/external/unbound/util/random.h new file mode 100644 index 000000000..a05a994a3 --- /dev/null +++ b/external/unbound/util/random.h @@ -0,0 +1,93 @@ +/* + * util/random.h - thread safe random generator, which is reasonably secure. + * + * Copyright (c) 2007, NLnet Labs. All rights reserved. + * + * This software is open source. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * Neither the name of the NLNET LABS nor the names of its contributors may + * be used to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef UTIL_RANDOM_H +#define UTIL_RANDOM_H + +/** + * \file + * Thread safe random functions. Similar to arc4random() with an explicit + * initialisation routine. + */ + +/** + * random state structure. + */ +struct ub_randstate; + +/** + * Initialize the system randomness. Obtains entropy from the system + * before a chroot or privilege makes it unavailable. + * You do not have to call this, otherwise ub_initstate does so. + * @param seed: seed value to create state (if no good entropy is found). + */ +void ub_systemseed(unsigned int seed); + +/** + * Initialize a random generator state for use + * @param seed: seed value to create state contents. + * (ignored for arc4random). + * @param from: if not NULL, the seed is taken from this random structure. + * can be used to seed random states via a parent-random-state that + * is itself seeded with entropy. + * @return new state or NULL alloc failure. + */ +struct ub_randstate* ub_initstate(unsigned int seed, + struct ub_randstate* from); + +/** + * Generate next random number from the state passed along. + * Thread safe, so random numbers are repeatable. + * @param state: must have been initialised with ub_initstate. + * @return: random 31 bit value. + */ +long int ub_random(struct ub_randstate* state); + +/** + * Generate random number between 0 and x-1. No modulo bias. + * @param state: must have been initialised with ub_initstate. + * @param x: an upper limit. not (negative or zero). must be smaller than 2**31. + * @return: random value between 0..x-1. Possibly more than one + * random number is picked from the random stream to satisfy this. + */ +long int ub_random_max(struct ub_randstate* state, long int x); + +/** + * Delete the random state. + * @param state: to delete. + */ +void ub_randfree(struct ub_randstate* state); + +#endif /* UTIL_RANDOM_H */ diff --git a/external/unbound/util/rbtree.c b/external/unbound/util/rbtree.c new file mode 100644 index 000000000..a898f13f0 --- /dev/null +++ b/external/unbound/util/rbtree.c @@ -0,0 +1,620 @@ +/* + * rbtree.c -- generic red black tree + * + * Copyright (c) 2001-2007, NLnet Labs. All rights reserved. + * + * This software is open source. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * Neither the name of the NLNET LABS nor the names of its contributors may + * be used to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +/** + * \file + * Implementation of a redblack tree. + */ + +#include "config.h" +#include "log.h" +#include "fptr_wlist.h" +#include "util/rbtree.h" + +/** Node colour black */ +#define BLACK 0 +/** Node colour red */ +#define RED 1 + +/** the NULL node, global alloc */ +rbnode_t rbtree_null_node = { + RBTREE_NULL, /* Parent. */ + RBTREE_NULL, /* Left. */ + RBTREE_NULL, /* Right. */ + NULL, /* Key. */ + BLACK /* Color. */ +}; + +/** rotate subtree left (to preserve redblack property) */ +static void rbtree_rotate_left(rbtree_t *rbtree, rbnode_t *node); +/** rotate subtree right (to preserve redblack property) */ +static void rbtree_rotate_right(rbtree_t *rbtree, rbnode_t *node); +/** Fixup node colours when insert happened */ +static void rbtree_insert_fixup(rbtree_t *rbtree, rbnode_t *node); +/** Fixup node colours when delete happened */ +static void rbtree_delete_fixup(rbtree_t* rbtree, rbnode_t* child, rbnode_t* child_parent); + +/* + * Creates a new red black tree, intializes and returns a pointer to it. + * + * Return NULL on failure. + * + */ +rbtree_t * +rbtree_create (int (*cmpf)(const void *, const void *)) +{ + rbtree_t *rbtree; + + /* Allocate memory for it */ + rbtree = (rbtree_t *) malloc(sizeof(rbtree_t)); + if (!rbtree) { + return NULL; + } + + /* Initialize it */ + rbtree_init(rbtree, cmpf); + + return rbtree; +} + +void +rbtree_init(rbtree_t *rbtree, int (*cmpf)(const void *, const void *)) +{ + /* Initialize it */ + rbtree->root = RBTREE_NULL; + rbtree->count = 0; + rbtree->cmp = cmpf; +} + +/* + * Rotates the node to the left. + * + */ +static void +rbtree_rotate_left(rbtree_t *rbtree, rbnode_t *node) +{ + rbnode_t *right = node->right; + node->right = right->left; + if (right->left != RBTREE_NULL) + right->left->parent = node; + + right->parent = node->parent; + + if (node->parent != RBTREE_NULL) { + if (node == node->parent->left) { + node->parent->left = right; + } else { + node->parent->right = right; + } + } else { + rbtree->root = right; + } + right->left = node; + node->parent = right; +} + +/* + * Rotates the node to the right. + * + */ +static void +rbtree_rotate_right(rbtree_t *rbtree, rbnode_t *node) +{ + rbnode_t *left = node->left; + node->left = left->right; + if (left->right != RBTREE_NULL) + left->right->parent = node; + + left->parent = node->parent; + + if (node->parent != RBTREE_NULL) { + if (node == node->parent->right) { + node->parent->right = left; + } else { + node->parent->left = left; + } + } else { + rbtree->root = left; + } + left->right = node; + node->parent = left; +} + +static void +rbtree_insert_fixup(rbtree_t *rbtree, rbnode_t *node) +{ + rbnode_t *uncle; + + /* While not at the root and need fixing... */ + while (node != rbtree->root && node->parent->color == RED) { + /* If our parent is left child of our grandparent... */ + if (node->parent == node->parent->parent->left) { + uncle = node->parent->parent->right; + + /* If our uncle is red... */ + if (uncle->color == RED) { + /* Paint the parent and the uncle black... */ + node->parent->color = BLACK; + uncle->color = BLACK; + + /* And the grandparent red... */ + node->parent->parent->color = RED; + + /* And continue fixing the grandparent */ + node = node->parent->parent; + } else { /* Our uncle is black... */ + /* Are we the right child? */ + if (node == node->parent->right) { + node = node->parent; + rbtree_rotate_left(rbtree, node); + } + /* Now we're the left child, repaint and rotate... */ + node->parent->color = BLACK; + node->parent->parent->color = RED; + rbtree_rotate_right(rbtree, node->parent->parent); + } + } else { + uncle = node->parent->parent->left; + + /* If our uncle is red... */ + if (uncle->color == RED) { + /* Paint the parent and the uncle black... */ + node->parent->color = BLACK; + uncle->color = BLACK; + + /* And the grandparent red... */ + node->parent->parent->color = RED; + + /* And continue fixing the grandparent */ + node = node->parent->parent; + } else { /* Our uncle is black... */ + /* Are we the right child? */ + if (node == node->parent->left) { + node = node->parent; + rbtree_rotate_right(rbtree, node); + } + /* Now we're the right child, repaint and rotate... */ + node->parent->color = BLACK; + node->parent->parent->color = RED; + rbtree_rotate_left(rbtree, node->parent->parent); + } + } + } + rbtree->root->color = BLACK; +} + + +/* + * Inserts a node into a red black tree. + * + * Returns NULL on failure or the pointer to the newly added node + * otherwise. + */ +rbnode_t * +rbtree_insert (rbtree_t *rbtree, rbnode_t *data) +{ + /* XXX Not necessary, but keeps compiler quiet... */ + int r = 0; + + /* We start at the root of the tree */ + rbnode_t *node = rbtree->root; + rbnode_t *parent = RBTREE_NULL; + + fptr_ok(fptr_whitelist_rbtree_cmp(rbtree->cmp)); + /* Lets find the new parent... */ + while (node != RBTREE_NULL) { + /* Compare two keys, do we have a duplicate? */ + if ((r = rbtree->cmp(data->key, node->key)) == 0) { + return NULL; + } + parent = node; + + if (r < 0) { + node = node->left; + } else { + node = node->right; + } + } + + /* Initialize the new node */ + data->parent = parent; + data->left = data->right = RBTREE_NULL; + data->color = RED; + rbtree->count++; + + /* Insert it into the tree... */ + if (parent != RBTREE_NULL) { + if (r < 0) { + parent->left = data; + } else { + parent->right = data; + } + } else { + rbtree->root = data; + } + + /* Fix up the red-black properties... */ + rbtree_insert_fixup(rbtree, data); + + return data; +} + +/* + * Searches the red black tree, returns the data if key is found or NULL otherwise. + * + */ +rbnode_t * +rbtree_search (rbtree_t *rbtree, const void *key) +{ + rbnode_t *node; + + if (rbtree_find_less_equal(rbtree, key, &node)) { + return node; + } else { + return NULL; + } +} + +/** helpers for delete: swap node colours */ +static void swap_int8(uint8_t* x, uint8_t* y) +{ + uint8_t t = *x; *x = *y; *y = t; +} + +/** helpers for delete: swap node pointers */ +static void swap_np(rbnode_t** x, rbnode_t** y) +{ + rbnode_t* t = *x; *x = *y; *y = t; +} + +/** Update parent pointers of child trees of 'parent' */ +static void change_parent_ptr(rbtree_t* rbtree, rbnode_t* parent, rbnode_t* old, rbnode_t* new) +{ + if(parent == RBTREE_NULL) + { + log_assert(rbtree->root == old); + if(rbtree->root == old) rbtree->root = new; + return; + } + log_assert(parent->left == old || parent->right == old + || parent->left == new || parent->right == new); + if(parent->left == old) parent->left = new; + if(parent->right == old) parent->right = new; +} +/** Update parent pointer of a node 'child' */ +static void change_child_ptr(rbnode_t* child, rbnode_t* old, rbnode_t* new) +{ + if(child == RBTREE_NULL) return; + log_assert(child->parent == old || child->parent == new); + if(child->parent == old) child->parent = new; +} + +rbnode_t* +rbtree_delete(rbtree_t *rbtree, const void *key) +{ + rbnode_t *to_delete; + rbnode_t *child; + if((to_delete = rbtree_search(rbtree, key)) == 0) return 0; + rbtree->count--; + + /* make sure we have at most one non-leaf child */ + if(to_delete->left != RBTREE_NULL && to_delete->right != RBTREE_NULL) + { + /* swap with smallest from right subtree (or largest from left) */ + rbnode_t *smright = to_delete->right; + while(smright->left != RBTREE_NULL) + smright = smright->left; + /* swap the smright and to_delete elements in the tree, + * but the rbnode_t is first part of user data struct + * so cannot just swap the keys and data pointers. Instead + * readjust the pointers left,right,parent */ + + /* swap colors - colors are tied to the position in the tree */ + swap_int8(&to_delete->color, &smright->color); + + /* swap child pointers in parents of smright/to_delete */ + change_parent_ptr(rbtree, to_delete->parent, to_delete, smright); + if(to_delete->right != smright) + change_parent_ptr(rbtree, smright->parent, smright, to_delete); + + /* swap parent pointers in children of smright/to_delete */ + change_child_ptr(smright->left, smright, to_delete); + change_child_ptr(smright->left, smright, to_delete); + change_child_ptr(smright->right, smright, to_delete); + change_child_ptr(smright->right, smright, to_delete); + change_child_ptr(to_delete->left, to_delete, smright); + if(to_delete->right != smright) + change_child_ptr(to_delete->right, to_delete, smright); + if(to_delete->right == smright) + { + /* set up so after swap they work */ + to_delete->right = to_delete; + smright->parent = smright; + } + + /* swap pointers in to_delete/smright nodes */ + swap_np(&to_delete->parent, &smright->parent); + swap_np(&to_delete->left, &smright->left); + swap_np(&to_delete->right, &smright->right); + + /* now delete to_delete (which is at the location where the smright previously was) */ + } + log_assert(to_delete->left == RBTREE_NULL || to_delete->right == RBTREE_NULL); + + if(to_delete->left != RBTREE_NULL) child = to_delete->left; + else child = to_delete->right; + + /* unlink to_delete from the tree, replace to_delete with child */ + change_parent_ptr(rbtree, to_delete->parent, to_delete, child); + change_child_ptr(child, to_delete, to_delete->parent); + + if(to_delete->color == RED) + { + /* if node is red then the child (black) can be swapped in */ + } + else if(child->color == RED) + { + /* change child to BLACK, removing a RED node is no problem */ + if(child!=RBTREE_NULL) child->color = BLACK; + } + else rbtree_delete_fixup(rbtree, child, to_delete->parent); + + /* unlink completely */ + to_delete->parent = RBTREE_NULL; + to_delete->left = RBTREE_NULL; + to_delete->right = RBTREE_NULL; + to_delete->color = BLACK; + return to_delete; +} + +static void rbtree_delete_fixup(rbtree_t* rbtree, rbnode_t* child, rbnode_t* child_parent) +{ + rbnode_t* sibling; + int go_up = 1; + + /* determine sibling to the node that is one-black short */ + if(child_parent->right == child) sibling = child_parent->left; + else sibling = child_parent->right; + + while(go_up) + { + if(child_parent == RBTREE_NULL) + { + /* removed parent==black from root, every path, so ok */ + return; + } + + if(sibling->color == RED) + { /* rotate to get a black sibling */ + child_parent->color = RED; + sibling->color = BLACK; + if(child_parent->right == child) + rbtree_rotate_right(rbtree, child_parent); + else rbtree_rotate_left(rbtree, child_parent); + /* new sibling after rotation */ + if(child_parent->right == child) sibling = child_parent->left; + else sibling = child_parent->right; + } + + if(child_parent->color == BLACK + && sibling->color == BLACK + && sibling->left->color == BLACK + && sibling->right->color == BLACK) + { /* fixup local with recolor of sibling */ + if(sibling != RBTREE_NULL) + sibling->color = RED; + + child = child_parent; + child_parent = child_parent->parent; + /* prepare to go up, new sibling */ + if(child_parent->right == child) sibling = child_parent->left; + else sibling = child_parent->right; + } + else go_up = 0; + } + + if(child_parent->color == RED + && sibling->color == BLACK + && sibling->left->color == BLACK + && sibling->right->color == BLACK) + { + /* move red to sibling to rebalance */ + if(sibling != RBTREE_NULL) + sibling->color = RED; + child_parent->color = BLACK; + return; + } + log_assert(sibling != RBTREE_NULL); + + /* get a new sibling, by rotating at sibling. See which child + of sibling is red */ + if(child_parent->right == child + && sibling->color == BLACK + && sibling->right->color == RED + && sibling->left->color == BLACK) + { + sibling->color = RED; + sibling->right->color = BLACK; + rbtree_rotate_left(rbtree, sibling); + /* new sibling after rotation */ + if(child_parent->right == child) sibling = child_parent->left; + else sibling = child_parent->right; + } + else if(child_parent->left == child + && sibling->color == BLACK + && sibling->left->color == RED + && sibling->right->color == BLACK) + { + sibling->color = RED; + sibling->left->color = BLACK; + rbtree_rotate_right(rbtree, sibling); + /* new sibling after rotation */ + if(child_parent->right == child) sibling = child_parent->left; + else sibling = child_parent->right; + } + + /* now we have a black sibling with a red child. rotate and exchange colors. */ + sibling->color = child_parent->color; + child_parent->color = BLACK; + if(child_parent->right == child) + { + log_assert(sibling->left->color == RED); + sibling->left->color = BLACK; + rbtree_rotate_right(rbtree, child_parent); + } + else + { + log_assert(sibling->right->color == RED); + sibling->right->color = BLACK; + rbtree_rotate_left(rbtree, child_parent); + } +} + +int +rbtree_find_less_equal(rbtree_t *rbtree, const void *key, rbnode_t **result) +{ + int r; + rbnode_t *node; + + log_assert(result); + + /* We start at root... */ + node = rbtree->root; + + *result = NULL; + fptr_ok(fptr_whitelist_rbtree_cmp(rbtree->cmp)); + + /* While there are children... */ + while (node != RBTREE_NULL) { + r = rbtree->cmp(key, node->key); + if (r == 0) { + /* Exact match */ + *result = node; + return 1; + } + if (r < 0) { + node = node->left; + } else { + /* Temporary match */ + *result = node; + node = node->right; + } + } + return 0; +} + +/* + * Finds the first element in the red black tree + * + */ +rbnode_t * +rbtree_first (rbtree_t *rbtree) +{ + rbnode_t *node; + + for (node = rbtree->root; node->left != RBTREE_NULL; node = node->left); + return node; +} + +rbnode_t * +rbtree_last (rbtree_t *rbtree) +{ + rbnode_t *node; + + for (node = rbtree->root; node->right != RBTREE_NULL; node = node->right); + return node; +} + +/* + * Returns the next node... + * + */ +rbnode_t * +rbtree_next (rbnode_t *node) +{ + rbnode_t *parent; + + if (node->right != RBTREE_NULL) { + /* One right, then keep on going left... */ + for (node = node->right; node->left != RBTREE_NULL; node = node->left); + } else { + parent = node->parent; + while (parent != RBTREE_NULL && node == parent->right) { + node = parent; + parent = parent->parent; + } + node = parent; + } + return node; +} + +rbnode_t * +rbtree_previous(rbnode_t *node) +{ + rbnode_t *parent; + + if (node->left != RBTREE_NULL) { + /* One left, then keep on going right... */ + for (node = node->left; node->right != RBTREE_NULL; node = node->right); + } else { + parent = node->parent; + while (parent != RBTREE_NULL && node == parent->left) { + node = parent; + parent = parent->parent; + } + node = parent; + } + return node; +} + +/** recursive descent traverse */ +static void +traverse_post(void (*func)(rbnode_t*, void*), void* arg, rbnode_t* node) +{ + if(!node || node == RBTREE_NULL) + return; + /* recurse */ + traverse_post(func, arg, node->left); + traverse_post(func, arg, node->right); + /* call user func */ + (*func)(node, arg); +} + +void +traverse_postorder(rbtree_t* tree, void (*func)(rbnode_t*, void*), void* arg) +{ + traverse_post(func, arg, tree->root); +} diff --git a/external/unbound/util/rbtree.h b/external/unbound/util/rbtree.h new file mode 100644 index 000000000..50c84bbab --- /dev/null +++ b/external/unbound/util/rbtree.h @@ -0,0 +1,192 @@ +/* + * rbtree.h -- generic red-black tree + * + * Copyright (c) 2001-2007, NLnet Labs. All rights reserved. + * + * This software is open source. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * Neither the name of the NLNET LABS nor the names of its contributors may + * be used to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +/** + * \file + * Red black tree. Implementation taken from NSD 3.0.5, adjusted for use + * in unbound (memory allocation, logging and so on). + */ + +#ifndef UTIL_RBTREE_H_ +#define UTIL_RBTREE_H_ + +/** + * This structure must be the first member of the data structure in + * the rbtree. This allows easy casting between an rbnode_t and the + * user data (poor man's inheritance). + */ +typedef struct rbnode_t rbnode_t; +/** + * The rbnode_t struct definition. + */ +struct rbnode_t { + /** parent in rbtree, RBTREE_NULL for root */ + rbnode_t *parent; + /** left node (smaller items) */ + rbnode_t *left; + /** right node (larger items) */ + rbnode_t *right; + /** pointer to sorting key */ + const void *key; + /** colour of this node */ + uint8_t color; +}; + +/** The nullpointer, points to empty node */ +#define RBTREE_NULL &rbtree_null_node +/** the global empty node */ +extern rbnode_t rbtree_null_node; + +/** An entire red black tree */ +typedef struct rbtree_t rbtree_t; +/** definition for tree struct */ +struct rbtree_t { + /** The root of the red-black tree */ + rbnode_t *root; + + /** The number of the nodes in the tree */ + size_t count; + + /** + * Key compare function. <0,0,>0 like strcmp. + * Return 0 on two NULL ptrs. + */ + int (*cmp) (const void *, const void *); +}; + +/** + * Create new tree (malloced) with given key compare function. + * @param cmpf: compare function (like strcmp) takes pointers to two keys. + * @return: new tree, empty. + */ +rbtree_t *rbtree_create(int (*cmpf)(const void *, const void *)); + +/** + * Init a new tree (malloced by caller) with given key compare function. + * @param rbtree: uninitialised memory for new tree, returned empty. + * @param cmpf: compare function (like strcmp) takes pointers to two keys. + */ +void rbtree_init(rbtree_t *rbtree, int (*cmpf)(const void *, const void *)); + +/** + * Insert data into the tree. + * @param rbtree: tree to insert to. + * @param data: element to insert. + * @return: data ptr or NULL if key already present. + */ +rbnode_t *rbtree_insert(rbtree_t *rbtree, rbnode_t *data); + +/** + * Delete element from tree. + * @param rbtree: tree to delete from. + * @param key: key of item to delete. + * @return: node that is now unlinked from the tree. User to delete it. + * returns 0 if node not present + */ +rbnode_t *rbtree_delete(rbtree_t *rbtree, const void *key); + +/** + * Find key in tree. Returns NULL if not found. + * @param rbtree: tree to find in. + * @param key: key that must match. + * @return: node that fits or NULL. + */ +rbnode_t *rbtree_search(rbtree_t *rbtree, const void *key); + +/** + * Find, but match does not have to be exact. + * @param rbtree: tree to find in. + * @param key: key to find position of. + * @param result: set to the exact node if present, otherwise to element that + * precedes the position of key in the tree. NULL if no smaller element. + * @return: true if exact match in result. Else result points to <= element, + * or NULL if key is smaller than the smallest key. + */ +int rbtree_find_less_equal(rbtree_t *rbtree, const void *key, + rbnode_t **result); + +/** + * Returns first (smallest) node in the tree + * @param rbtree: tree + * @return: smallest element or NULL if tree empty. + */ +rbnode_t *rbtree_first(rbtree_t *rbtree); + +/** + * Returns last (largest) node in the tree + * @param rbtree: tree + * @return: largest element or NULL if tree empty. + */ +rbnode_t *rbtree_last(rbtree_t *rbtree); + +/** + * Returns next larger node in the tree + * @param rbtree: tree + * @return: next larger element or NULL if no larger in tree. + */ +rbnode_t *rbtree_next(rbnode_t *rbtree); + +/** + * Returns previous smaller node in the tree + * @param rbtree: tree + * @return: previous smaller element or NULL if no previous in tree. + */ +rbnode_t *rbtree_previous(rbnode_t *rbtree); + +/** + * Call with node=variable of struct* with rbnode_t as first element. + * with type is the type of a pointer to that struct. + */ +#define RBTREE_FOR(node, type, rbtree) \ + for(node=(type)rbtree_first(rbtree); \ + (rbnode_t*)node != RBTREE_NULL; \ + node = (type)rbtree_next((rbnode_t*)node)) + +/** + * Call function for all elements in the redblack tree, such that + * leaf elements are called before parent elements. So that all + * elements can be safely free()d. + * Note that your function must not remove the nodes from the tree. + * Since that may trigger rebalances of the rbtree. + * @param tree: the tree + * @param func: function called with element and user arg. + * The function must not alter the rbtree. + * @param arg: user argument. + */ +void traverse_postorder(rbtree_t* tree, void (*func)(rbnode_t*, void*), + void* arg); + +#endif /* UTIL_RBTREE_H_ */ diff --git a/external/unbound/util/regional.c b/external/unbound/util/regional.c new file mode 100644 index 000000000..899a54edb --- /dev/null +++ b/external/unbound/util/regional.c @@ -0,0 +1,223 @@ +/* + * regional.c -- region based memory allocator. + * + * Copyright (c) 2001-2006, NLnet Labs. All rights reserved. + * + * Copyright (c) 2007, NLnet Labs. All rights reserved. + * + * This software is open source. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * Neither the name of the NLNET LABS nor the names of its contributors may + * be used to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/** + * \file + * Regional allocator. Allocates small portions of of larger chunks. + */ + +#include "config.h" +#include "util/log.h" +#include "util/regional.h" + +#ifdef ALIGNMENT +# undef ALIGNMENT +#endif +/** increase size until it fits alignment of s bytes */ +#define ALIGN_UP(x, s) (((x) + s - 1) & (~(s - 1))) +/** what size to align on; make sure a char* fits in it. */ +#define ALIGNMENT (sizeof(uint64_t)) + +/** Default reasonable size for chunks */ +#define REGIONAL_CHUNK_SIZE 8192 +#ifdef UNBOUND_ALLOC_NONREGIONAL +/** All objects allocated outside of chunks, for debug */ +#define REGIONAL_LARGE_OBJECT_SIZE 0 +#else +/** Default size for large objects - allocated outside of chunks. */ +#define REGIONAL_LARGE_OBJECT_SIZE 2048 +#endif + +struct regional* +regional_create(void) +{ + return regional_create_custom(REGIONAL_CHUNK_SIZE); +} + +/** init regional struct with first block */ +static void +regional_init(struct regional* r) +{ + size_t a = ALIGN_UP(sizeof(struct regional), ALIGNMENT); + r->data = (char*)r + a; + r->available = r->first_size - a; + r->next = NULL; + r->large_list = NULL; + r->total_large = 0; +} + +struct regional* +regional_create_custom(size_t size) +{ + struct regional* r = (struct regional*)malloc(size); + log_assert(sizeof(struct regional) <= size); + if(!r) return NULL; + r->first_size = size; + regional_init(r); + return r; +} + +void +regional_free_all(struct regional *r) +{ + char* p = r->next, *np; + while(p) { + np = *(char**)p; + free(p); + p = np; + } + p = r->large_list; + while(p) { + np = *(char**)p; + free(p); + p = np; + } + regional_init(r); +} + +void +regional_destroy(struct regional *r) +{ + if(!r) return; + regional_free_all(r); + free(r); +} + +void * +regional_alloc(struct regional *r, size_t size) +{ + size_t a = ALIGN_UP(size, ALIGNMENT); + void *s; + /* large objects */ + if(a > REGIONAL_LARGE_OBJECT_SIZE) { + s = malloc(ALIGNMENT + size); + if(!s) return NULL; + r->total_large += ALIGNMENT+size; + *(char**)s = r->large_list; + r->large_list = (char*)s; + return (char*)s+ALIGNMENT; + } + /* create a new chunk */ + if(a > r->available) { + s = malloc(REGIONAL_CHUNK_SIZE); + if(!s) return NULL; + *(char**)s = r->next; + r->next = (char*)s; + r->data = (char*)s + ALIGNMENT; + r->available = REGIONAL_CHUNK_SIZE - ALIGNMENT; + } + /* put in this chunk */ + r->available -= a; + s = r->data; + r->data += a; + return s; +} + +void * +regional_alloc_init(struct regional* r, const void *init, size_t size) +{ + void *s = regional_alloc(r, size); + if(!s) return NULL; + memcpy(s, init, size); + return s; +} + +void * +regional_alloc_zero(struct regional *r, size_t size) +{ + void *s = regional_alloc(r, size); + if(!s) return NULL; + memset(s, 0, size); + return s; +} + +char * +regional_strdup(struct regional *r, const char *string) +{ + return (char*)regional_alloc_init(r, string, strlen(string)+1); +} + +/** + * reasonably slow, but stats and get_mem are not supposed to be fast + * count the number of chunks in use + */ +static size_t +count_chunks(struct regional* r) +{ + size_t c = 1; + char* p = r->next; + while(p) { + c++; + p = *(char**)p; + } + return c; +} + +/** + * also reasonably slow, counts the number of large objects + */ +static size_t +count_large(struct regional* r) +{ + size_t c = 0; + char* p = r->large_list; + while(p) { + c++; + p = *(char**)p; + } + return c; +} + +void +regional_log_stats(struct regional *r) +{ + /* some basic assertions put here (non time critical code) */ + log_assert(ALIGNMENT >= sizeof(char*)); + log_assert(REGIONAL_CHUNK_SIZE > ALIGNMENT); + log_assert(REGIONAL_CHUNK_SIZE-ALIGNMENT > REGIONAL_LARGE_OBJECT_SIZE); + log_assert(REGIONAL_CHUNK_SIZE >= sizeof(struct regional)); + /* debug print */ + log_info("regional %u chunks, %u large", + (unsigned)count_chunks(r), (unsigned)count_large(r)); +} + +size_t +regional_get_mem(struct regional* r) +{ + return r->first_size + (count_chunks(r)-1)*REGIONAL_CHUNK_SIZE + + r->total_large; +} diff --git a/external/unbound/util/regional.h b/external/unbound/util/regional.h new file mode 100644 index 000000000..e8b2cb8d0 --- /dev/null +++ b/external/unbound/util/regional.h @@ -0,0 +1,150 @@ +/* + * regional.h -- region based memory allocator. + * + * Copyright (c) 2007, NLnet Labs. All rights reserved. + * + * This software is open source. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * Neither the name of the NLNET LABS nor the names of its contributors may + * be used to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/** + * \file + * Regional allocator. Allocates small portions of of larger chunks. + * Based on region-allocator from NSD, but rewritten to be light. + * + * Different from (nsd) region-allocator.h + * o does not have recycle bin + * o does not collect stats; just enough to answer get_mem() in use. + * o does not keep cleanup list + * o does not have function pointers to setup + * o allocs the regional struct inside the first block. + * o can take a block to create regional from. + * o blocks and large allocations are kept on singly linked lists. + */ + +#ifndef UTIL_REGIONAL_H_ +#define UTIL_REGIONAL_H_ + +/** + * the regional* is the first block*. + * every block has a ptr to the next in first bytes. + * and so does the regional struct, which is the first block. + */ +struct regional +{ + /** + * next chunk. NULL if first chunk is the only chunk. + * first inside that chunk is the char* next pointer. + * When regional_free_all() has been called this value is NULL. + */ + char* next; + /** first large object, cast to char** to obtain next ptr */ + char* large_list; + /** total large size */ + size_t total_large; + /** initial chunk size */ + size_t first_size; + /** number of bytes available in the current chunk. */ + size_t available; + /** current chunk data position. */ + char* data; +}; + +/** + * Create a new regional. + * @return: newly allocated regional. + */ +struct regional* regional_create(void); + +/** + * Create a new region, with custom settings. + * @param size: length of first block. + * @return: newly allocated regional. + */ +struct regional* regional_create_custom(size_t size); + +/** + * Free all memory associated with regional. Only keeps the first block with + * the regional inside it. + * @param r: the region. + */ +void regional_free_all(struct regional *r); + +/** + * Destroy regional. All memory associated with regional is freed as if + * regional_free_all was called, as well as destroying the regional struct. + * @param r: to delete. + */ +void regional_destroy(struct regional *r); + +/** + * Allocate size bytes of memory inside regional. The memory is + * deallocated when region_free_all is called for this region. + * @param r: the region. + * @param size: number of bytes. + * @return: pointer to memory allocated. + */ +void *regional_alloc(struct regional *r, size_t size); + +/** + * Allocate size bytes of memory inside regional and copy INIT into it. + * The memory is deallocated when region_free_all is called for this + * region. + * @param r: the region. + * @param init: to copy. + * @param size: number of bytes. + * @return: pointer to memory allocated. + */ +void *regional_alloc_init(struct regional* r, const void *init, size_t size); + +/** + * Allocate size bytes of memory inside regional that are initialized to + * 0. The memory is deallocated when region_free_all is called for + * this region. + * @param r: the region. + * @param size: number of bytes. + * @return: pointer to memory allocated. + */ +void *regional_alloc_zero(struct regional *r, size_t size); + +/** + * Duplicate string and allocate the result in regional. + * @param r: the region. + * @param string: null terminated string. + * @return: pointer to memory allocated. + */ +char *regional_strdup(struct regional *r, const char *string); + +/** Debug print regional statistics to log */ +void regional_log_stats(struct regional *r); + +/** get total memory size in use by region */ +size_t regional_get_mem(struct regional* r); + +#endif /* UTIL_REGIONAL_H_ */ diff --git a/external/unbound/util/rtt.c b/external/unbound/util/rtt.c new file mode 100644 index 000000000..4b44fca50 --- /dev/null +++ b/external/unbound/util/rtt.c @@ -0,0 +1,119 @@ +/* + * util/rtt.c - UDP round trip time estimator for resend timeouts. + * + * Copyright (c) 2007, NLnet Labs. All rights reserved. + * + * This software is open source. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * Neither the name of the NLNET LABS nor the names of its contributors may + * be used to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/** + * \file + * + * This file contains a data type and functions to help estimate good + * round trip times for UDP resend timeout values. + */ +#include "config.h" +#include "util/rtt.h" + +/** calculate RTO from rtt information */ +static int +calc_rto(const struct rtt_info* rtt) +{ + /* From Stevens, Unix Network Programming, Vol1, 3rd ed., p.598 */ + int rto = rtt->srtt + 4*rtt->rttvar; + if(rto < RTT_MIN_TIMEOUT) + rto = RTT_MIN_TIMEOUT; + if(rto > RTT_MAX_TIMEOUT) + rto = RTT_MAX_TIMEOUT; + return rto; +} + +void +rtt_init(struct rtt_info* rtt) +{ + rtt->srtt = 0; + rtt->rttvar = 94; + rtt->rto = calc_rto(rtt); + /* default value from the book is 0 + 4*0.75 = 3 seconds */ + /* first RTO is 0 + 4*0.094 = 0.376 seconds */ +} + +int +rtt_timeout(const struct rtt_info* rtt) +{ + return rtt->rto; +} + +int +rtt_unclamped(const struct rtt_info* rtt) +{ + if(calc_rto(rtt) != rtt->rto) { + /* timeout fallback has happened */ + return rtt->rto; + } + /* return unclamped value */ + return rtt->srtt + 4*rtt->rttvar; +} + +void +rtt_update(struct rtt_info* rtt, int ms) +{ + int delta = ms - rtt->srtt; + rtt->srtt += delta / 8; /* g = 1/8 */ + if(delta < 0) + delta = -delta; /* |delta| */ + rtt->rttvar += (delta - rtt->rttvar) / 4; /* h = 1/4 */ + rtt->rto = calc_rto(rtt); +} + +void +rtt_lost(struct rtt_info* rtt, int orig) +{ + /* exponential backoff */ + + /* if a query succeeded and put down the rto meanwhile, ignore this */ + if(rtt->rto < orig) + return; + + /* the original rto is doubled, not the current one to make sure + * that the values in the cache are not increased by lots of + * queries simultaneously as they time out at the same time */ + orig *= 2; + if(rtt->rto <= orig) { + rtt->rto = orig; + if(rtt->rto > RTT_MAX_TIMEOUT) + rtt->rto = RTT_MAX_TIMEOUT; + } +} + +int rtt_notimeout(const struct rtt_info* rtt) +{ + return calc_rto(rtt); +} diff --git a/external/unbound/util/rtt.h b/external/unbound/util/rtt.h new file mode 100644 index 000000000..57e904d14 --- /dev/null +++ b/external/unbound/util/rtt.h @@ -0,0 +1,107 @@ +/* + * util/rtt.h - UDP round trip time estimator for resend timeouts. + * + * Copyright (c) 2007, NLnet Labs. All rights reserved. + * + * This software is open source. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * Neither the name of the NLNET LABS nor the names of its contributors may + * be used to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/** + * \file + * + * This file contains a data type and functions to help estimate good + * round trip times for UDP resend timeout values. + */ + +#ifndef UTIL_RTT_H +#define UTIL_RTT_H + +/** + * RTT information. Keeps packet Round Trip Time. + */ +struct rtt_info { + /** smoothed rtt estimator, in milliseconds */ + int srtt; + /** smoothed mean deviation, in milliseconds */ + int rttvar; + /** current RTO in use, in milliseconds */ + int rto; +}; + +/** min retransmit timeout value, in milliseconds */ +#define RTT_MIN_TIMEOUT 50 +/** max retransmit timeout value, in milliseconds */ +#define RTT_MAX_TIMEOUT 120000 + +/** + * Initialize RTT estimators. + * @param rtt: The structure. Caller is responsible for allocation of it. + */ +void rtt_init(struct rtt_info* rtt); + +/** + * Get timeout to use for sending a UDP packet. + * @param rtt: round trip statistics structure. + * @return: timeout to use in milliseconds. Relative time value. + */ +int rtt_timeout(const struct rtt_info* rtt); + +/** + * Get unclamped timeout to use for server selection. + * Recent timeouts are reflected in the returned value. + * @param rtt: round trip statistics structure. + * @return: value to use in milliseconds. + */ +int rtt_unclamped(const struct rtt_info* rtt); + +/** + * RTT for valid responses. Without timeouts. + * @param rtt: round trip statistics structure. + * @return: value in msec. + */ +int rtt_notimeout(const struct rtt_info* rtt); + +/** + * Update the statistics with a new roundtrip estimate observation. + * @param rtt: round trip statistics structure. + * @param ms: estimate of roundtrip time in milliseconds. + */ +void rtt_update(struct rtt_info* rtt, int ms); + +/** + * Update the statistics with a new timout expired observation. + * @param rtt: round trip statistics structure. + * @param orig: original rtt time given for the query that timed out. + * Used to calculate the maximum responsible backed off time that + * can reasonably be applied. + */ +void rtt_lost(struct rtt_info* rtt, int orig); + +#endif /* UTIL_RTT_H */ diff --git a/external/unbound/util/storage/dnstree.c b/external/unbound/util/storage/dnstree.c new file mode 100644 index 000000000..0df490ee5 --- /dev/null +++ b/external/unbound/util/storage/dnstree.c @@ -0,0 +1,282 @@ +/* + * util/storage/dnstree.c - support for rbtree types suitable for DNS code. + * + * Copyright (c) 2008, NLnet Labs. All rights reserved. + * + * This software is open source. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * Neither the name of the NLNET LABS nor the names of its contributors may + * be used to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/** + * \file + * + * This file contains structures combining types and functions to + * manipulate those structures that help building DNS lookup trees. + */ +#include "config.h" +#include "util/storage/dnstree.h" +#include "util/data/dname.h" +#include "util/net_help.h" + +int name_tree_compare(const void* k1, const void* k2) +{ + struct name_tree_node* x = (struct name_tree_node*)k1; + struct name_tree_node* y = (struct name_tree_node*)k2; + int m; + if(x->dclass != y->dclass) { + if(x->dclass < y->dclass) + return -1; + return 1; + } + return dname_lab_cmp(x->name, x->labs, y->name, y->labs, &m); +} + +int addr_tree_compare(const void* k1, const void* k2) +{ + struct addr_tree_node* n1 = (struct addr_tree_node*)k1; + struct addr_tree_node* n2 = (struct addr_tree_node*)k2; + int r = sockaddr_cmp_addr(&n1->addr, n1->addrlen, &n2->addr, + n2->addrlen); + if(r != 0) return r; + if(n1->net < n2->net) + return -1; + if(n1->net > n2->net) + return 1; + return 0; +} + +void name_tree_init(rbtree_t* tree) +{ + rbtree_init(tree, &name_tree_compare); +} + +void addr_tree_init(rbtree_t* tree) +{ + rbtree_init(tree, &addr_tree_compare); +} + +int name_tree_insert(rbtree_t* tree, struct name_tree_node* node, + uint8_t* name, size_t len, int labs, uint16_t dclass) +{ + node->node.key = node; + node->name = name; + node->len = len; + node->labs = labs; + node->dclass = dclass; + node->parent = NULL; + return rbtree_insert(tree, &node->node) != NULL; +} + +int addr_tree_insert(rbtree_t* tree, struct addr_tree_node* node, + struct sockaddr_storage* addr, socklen_t addrlen, int net) +{ + node->node.key = node; + memcpy(&node->addr, addr, addrlen); + node->addrlen = addrlen; + node->net = net; + node->parent = NULL; + return rbtree_insert(tree, &node->node) != NULL; +} + +void addr_tree_init_parents(rbtree_t* tree) +{ + struct addr_tree_node* node, *prev = NULL, *p; + int m; + RBTREE_FOR(node, struct addr_tree_node*, tree) { + node->parent = NULL; + if(!prev || prev->addrlen != node->addrlen) { + prev = node; + continue; + } + m = addr_in_common(&prev->addr, prev->net, &node->addr, + node->net, node->addrlen); + /* sort order like: ::/0, 1::/2, 1::/4, ... 2::/2 */ + /* find the previous, or parent-parent-parent */ + for(p = prev; p; p = p->parent) + if(p->net <= m) { + /* ==: since prev matched m, this is closest*/ + /* <: prev matches more, but is not a parent, + * this one is a (grand)parent */ + node->parent = p; + break; + } + prev = node; + } +} + +void name_tree_init_parents(rbtree_t* tree) +{ + struct name_tree_node* node, *prev = NULL, *p; + int m; + RBTREE_FOR(node, struct name_tree_node*, tree) { + node->parent = NULL; + if(!prev || prev->dclass != node->dclass) { + prev = node; + continue; + } + (void)dname_lab_cmp(prev->name, prev->labs, node->name, + node->labs, &m); /* we know prev is smaller */ + /* sort order like: . com. bla.com. zwb.com. net. */ + /* find the previous, or parent-parent-parent */ + for(p = prev; p; p = p->parent) + if(p->labs <= m) { + /* ==: since prev matched m, this is closest*/ + /* <: prev matches more, but is not a parent, + * this one is a (grand)parent */ + node->parent = p; + break; + } + prev = node; + } +} + +struct name_tree_node* name_tree_find(rbtree_t* tree, uint8_t* name, + size_t len, int labs, uint16_t dclass) +{ + struct name_tree_node key; + key.node.key = &key; + key.name = name; + key.len = len; + key.labs = labs; + key.dclass = dclass; + return (struct name_tree_node*)rbtree_search(tree, &key); +} + +struct name_tree_node* name_tree_lookup(rbtree_t* tree, uint8_t* name, + size_t len, int labs, uint16_t dclass) +{ + rbnode_t* res = NULL; + struct name_tree_node *result; + struct name_tree_node key; + key.node.key = &key; + key.name = name; + key.len = len; + key.labs = labs; + key.dclass = dclass; + if(rbtree_find_less_equal(tree, &key, &res)) { + /* exact */ + result = (struct name_tree_node*)res; + } else { + /* smaller element (or no element) */ + int m; + result = (struct name_tree_node*)res; + if(!result || result->dclass != dclass) + return NULL; + /* count number of labels matched */ + (void)dname_lab_cmp(result->name, result->labs, key.name, + key.labs, &m); + while(result) { /* go up until qname is subdomain of stub */ + if(result->labs <= m) + break; + result = result->parent; + } + } + return result; +} + +struct addr_tree_node* addr_tree_lookup(rbtree_t* tree, + struct sockaddr_storage* addr, socklen_t addrlen) +{ + rbnode_t* res = NULL; + struct addr_tree_node* result; + struct addr_tree_node key; + key.node.key = &key; + memcpy(&key.addr, addr, addrlen); + key.addrlen = addrlen; + key.net = (addr_is_ip6(addr, addrlen)?128:32); + if(rbtree_find_less_equal(tree, &key, &res)) { + /* exact */ + return (struct addr_tree_node*)res; + } else { + /* smaller element (or no element) */ + int m; + result = (struct addr_tree_node*)res; + if(!result || result->addrlen != addrlen) + return 0; + /* count number of bits matched */ + m = addr_in_common(&result->addr, result->net, addr, + key.net, addrlen); + while(result) { /* go up until addr is inside netblock */ + if(result->net <= m) + break; + result = result->parent; + } + } + return result; +} + +int +name_tree_next_root(rbtree_t* tree, uint16_t* dclass) +{ + struct name_tree_node key; + rbnode_t* n; + struct name_tree_node* p; + if(*dclass == 0) { + /* first root item is first item in tree */ + n = rbtree_first(tree); + if(n == RBTREE_NULL) + return 0; + p = (struct name_tree_node*)n; + if(dname_is_root(p->name)) { + *dclass = p->dclass; + return 1; + } + /* root not first item? search for higher items */ + *dclass = p->dclass + 1; + return name_tree_next_root(tree, dclass); + } + /* find class n in tree, we may get a direct hit, or if we don't + * this is the last item of the previous class so rbtree_next() takes + * us to the next root (if any) */ + key.node.key = &key; + key.name = (uint8_t*)"\000"; + key.len = 1; + key.labs = 0; + key.dclass = *dclass; + n = NULL; + if(rbtree_find_less_equal(tree, &key, &n)) { + /* exact */ + return 1; + } else { + /* smaller element */ + if(!n || n == RBTREE_NULL) + return 0; /* nothing found */ + n = rbtree_next(n); + if(n == RBTREE_NULL) + return 0; /* no higher */ + p = (struct name_tree_node*)n; + if(dname_is_root(p->name)) { + *dclass = p->dclass; + return 1; + } + /* not a root node, return next higher item */ + *dclass = p->dclass+1; + return name_tree_next_root(tree, dclass); + } +} diff --git a/external/unbound/util/storage/dnstree.h b/external/unbound/util/storage/dnstree.h new file mode 100644 index 000000000..ec8189100 --- /dev/null +++ b/external/unbound/util/storage/dnstree.h @@ -0,0 +1,192 @@ +/* + * util/storage/dnstree.h - support for rbtree types suitable for DNS code. + * + * Copyright (c) 2008, NLnet Labs. All rights reserved. + * + * This software is open source. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * Neither the name of the NLNET LABS nor the names of its contributors may + * be used to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/** + * \file + * + * This file contains structures combining types and functions to + * manipulate those structures that help building DNS lookup trees. + */ + +#ifndef UTIL_STORAGE_DNSTREE_H +#define UTIL_STORAGE_DNSTREE_H +#include "util/rbtree.h" + +/** + * Tree of domain names. Sorted first by class then by name. + * This is not sorted canonically, but fast. + * This can be looked up to obtain a closest encloser parent name. + * + * The tree itself is a rbtree_t. + * This is the element node put as first entry in the client structure. + */ +struct name_tree_node { + /** rbtree node, key is this struct : dclass and name */ + rbnode_t node; + /** parent in tree */ + struct name_tree_node* parent; + /** name in uncompressed wireformat */ + uint8_t* name; + /** length of name */ + size_t len; + /** labels in name */ + int labs; + /** the class of the name (host order) */ + uint16_t dclass; +}; + +/** + * Tree of IP addresses. Sorted first by protocol, then by bits. + * This can be looked up to obtain the enclosing subnet. + * + * The tree itself is a rbtree_t. + * This is the element node put as first entry in the client structure. + */ +struct addr_tree_node { + /** rbtree node, key is this struct : proto and subnet */ + rbnode_t node; + /** parent in tree */ + struct addr_tree_node* parent; + /** address */ + struct sockaddr_storage addr; + /** length of addr */ + socklen_t addrlen; + /** netblock size */ + int net; +}; + +/** + * Init a name tree to be empty + * @param tree: to init. + */ +void name_tree_init(rbtree_t* tree); + +/** + * insert element into name tree. + * @param tree: name tree + * @param node: node element (at start of a structure that caller + * has allocated). + * @param name: name to insert (wireformat) + * this node has been allocated by the caller and it itself inserted. + * @param len: length of name + * @param labs: labels in name + * @param dclass: class of name + * @return false on error (duplicate element). + */ +int name_tree_insert(rbtree_t* tree, struct name_tree_node* node, + uint8_t* name, size_t len, int labs, uint16_t dclass); + +/** + * Initialize parent pointers in name tree. + * Should be performed after insertions are done, before lookups + * @param tree: name tree + */ +void name_tree_init_parents(rbtree_t* tree); + +/** + * Lookup exact match in name tree + * @param tree: name tree + * @param name: wireformat name + * @param len: length of name + * @param labs: labels in name + * @param dclass: class of name + * @return node or NULL if not found. + */ +struct name_tree_node* name_tree_find(rbtree_t* tree, uint8_t* name, + size_t len, int labs, uint16_t dclass); + +/** + * Lookup closest encloser in name tree. + * @param tree: name tree + * @param name: wireformat name + * @param len: length of name + * @param labs: labels in name + * @param dclass: class of name + * @return closest enclosing node (could be equal) or NULL if not found. + */ +struct name_tree_node* name_tree_lookup(rbtree_t* tree, uint8_t* name, + size_t len, int labs, uint16_t dclass); + +/** + * Find next root item in name tree. + * @param tree: the nametree. + * @param dclass: the class to look for next (or higher). + * @return false if no classes found, true means class put into c. + */ +int name_tree_next_root(rbtree_t* tree, uint16_t* dclass); + +/** + * Init addr tree to be empty. + * @param tree: to init. + */ +void addr_tree_init(rbtree_t* tree); + +/** + * insert element into addr tree. + * @param tree: addr tree + * @param node: node element (at start of a structure that caller + * has allocated). + * @param addr: to insert (copied). + * @param addrlen: length of addr + * @param net: size of subnet. + * @return false on error (duplicate element). + */ +int addr_tree_insert(rbtree_t* tree, struct addr_tree_node* node, + struct sockaddr_storage* addr, socklen_t addrlen, int net); + +/** + * Initialize parent pointers in addr tree. + * Should be performed after insertions are done, before lookups + * @param tree: addr tree + */ +void addr_tree_init_parents(rbtree_t* tree); + +/** + * Lookup closest encloser in addr tree. + * @param tree: addr tree + * @param addr: to lookup. + * @param addrlen: length of addr + * @return closest enclosing node (could be equal) or NULL if not found. + */ +struct addr_tree_node* addr_tree_lookup(rbtree_t* tree, + struct sockaddr_storage* addr, socklen_t addrlen); + +/** compare name tree nodes */ +int name_tree_compare(const void* k1, const void* k2); + +/** compare addr tree nodes */ +int addr_tree_compare(const void* k1, const void* k2); + +#endif /* UTIL_STORAGE_DNSTREE_H */ diff --git a/external/unbound/util/storage/lookup3.c b/external/unbound/util/storage/lookup3.c new file mode 100644 index 000000000..de288587b --- /dev/null +++ b/external/unbound/util/storage/lookup3.c @@ -0,0 +1,1032 @@ +/* + February 2013(Wouter) patch defines for BSD endianness, from Brad Smith. + January 2012(Wouter) added randomised initial value, fallout from 28c3. + March 2007(Wouter) adapted from lookup3.c original, add config.h include. + added #ifdef VALGRIND to remove 298,384,660 'unused variable k8' warnings. + added include of lookup3.h to check definitions match declarations. + removed include of stdint - config.h takes care of platform independence. + url http://burtleburtle.net/bob/hash/index.html. +*/ +/* +------------------------------------------------------------------------------- +lookup3.c, by Bob Jenkins, May 2006, Public Domain. + +These are functions for producing 32-bit hashes for hash table lookup. +hashword(), hashlittle(), hashlittle2(), hashbig(), mix(), and final() +are externally useful functions. Routines to test the hash are included +if SELF_TEST is defined. You can use this free for any purpose. It's in +the public domain. It has no warranty. + +You probably want to use hashlittle(). hashlittle() and hashbig() +hash byte arrays. hashlittle() is is faster than hashbig() on +little-endian machines. Intel and AMD are little-endian machines. +On second thought, you probably want hashlittle2(), which is identical to +hashlittle() except it returns two 32-bit hashes for the price of one. +You could implement hashbig2() if you wanted but I haven't bothered here. + +If you want to find a hash of, say, exactly 7 integers, do + a = i1; b = i2; c = i3; + mix(a,b,c); + a += i4; b += i5; c += i6; + mix(a,b,c); + a += i7; + final(a,b,c); +then use c as the hash value. If you have a variable length array of +4-byte integers to hash, use hashword(). If you have a byte array (like +a character string), use hashlittle(). If you have several byte arrays, or +a mix of things, see the comments above hashlittle(). + +Why is this so big? I read 12 bytes at a time into 3 4-byte integers, +then mix those integers. This is fast (you can do a lot more thorough +mixing with 12*3 instructions on 3 integers than you can with 3 instructions +on 1 byte), but shoehorning those bytes into integers efficiently is messy. +------------------------------------------------------------------------------- +*/ +/*#define SELF_TEST 1*/ + +#include "config.h" +#include "util/storage/lookup3.h" +#include <stdio.h> /* defines printf for tests */ +#include <time.h> /* defines time_t for timings in the test */ +/*#include <stdint.h> defines uint32_t etc (from config.h) */ +#include <sys/param.h> /* attempt to define endianness */ +#ifdef HAVE_SYS_TYPES_H +# include <sys/types.h> /* attempt to define endianness (solaris) */ +#endif +#if defined(linux) || defined(__OpenBSD__) +# ifdef HAVE_ENDIAN_H +# include <endian.h> /* attempt to define endianness */ +# else +# include <machine/endian.h> /* on older OpenBSD */ +# endif +#endif +#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__DragonFly__) +#include <sys/endian.h> /* attempt to define endianness */ +#endif + +/* random initial value */ +static uint32_t raninit = (uint32_t)0xdeadbeef; + +void +hash_set_raninit(uint32_t v) +{ + raninit = v; +} + +/* + * My best guess at if you are big-endian or little-endian. This may + * need adjustment. + */ +#if (defined(__BYTE_ORDER) && defined(__LITTLE_ENDIAN) && \ + __BYTE_ORDER == __LITTLE_ENDIAN) || \ + (defined(i386) || defined(__i386__) || defined(__i486__) || \ + defined(__i586__) || defined(__i686__) || defined(vax) || defined(MIPSEL) || defined(__x86)) +# define HASH_LITTLE_ENDIAN 1 +# define HASH_BIG_ENDIAN 0 +#elif (defined(__BYTE_ORDER) && defined(__BIG_ENDIAN) && \ + __BYTE_ORDER == __BIG_ENDIAN) || \ + (defined(sparc) || defined(__sparc) || defined(__sparc__) || defined(POWERPC) || defined(mc68000) || defined(sel)) +# define HASH_LITTLE_ENDIAN 0 +# define HASH_BIG_ENDIAN 1 +#elif defined(_MACHINE_ENDIAN_H_) +/* test for machine_endian_h protects failure if some are empty strings */ +# if defined(_BYTE_ORDER) && defined(_BIG_ENDIAN) && _BYTE_ORDER == _BIG_ENDIAN +# define HASH_LITTLE_ENDIAN 0 +# define HASH_BIG_ENDIAN 1 +# endif +# if defined(_BYTE_ORDER) && defined(_LITTLE_ENDIAN) && _BYTE_ORDER == _LITTLE_ENDIAN +# define HASH_LITTLE_ENDIAN 1 +# define HASH_BIG_ENDIAN 0 +# endif /* _MACHINE_ENDIAN_H_ */ +#else +# define HASH_LITTLE_ENDIAN 0 +# define HASH_BIG_ENDIAN 0 +#endif + +#define hashsize(n) ((uint32_t)1<<(n)) +#define hashmask(n) (hashsize(n)-1) +#define rot(x,k) (((x)<<(k)) | ((x)>>(32-(k)))) + +/* +------------------------------------------------------------------------------- +mix -- mix 3 32-bit values reversibly. + +This is reversible, so any information in (a,b,c) before mix() is +still in (a,b,c) after mix(). + +If four pairs of (a,b,c) inputs are run through mix(), or through +mix() in reverse, there are at least 32 bits of the output that +are sometimes the same for one pair and different for another pair. +This was tested for: +* pairs that differed by one bit, by two bits, in any combination + of top bits of (a,b,c), or in any combination of bottom bits of + (a,b,c). +* "differ" is defined as +, -, ^, or ~^. For + and -, I transformed + the output delta to a Gray code (a^(a>>1)) so a string of 1's (as + is commonly produced by subtraction) look like a single 1-bit + difference. +* the base values were pseudorandom, all zero but one bit set, or + all zero plus a counter that starts at zero. + +Some k values for my "a-=c; a^=rot(c,k); c+=b;" arrangement that +satisfy this are + 4 6 8 16 19 4 + 9 15 3 18 27 15 + 14 9 3 7 17 3 +Well, "9 15 3 18 27 15" didn't quite get 32 bits diffing +for "differ" defined as + with a one-bit base and a two-bit delta. I +used http://burtleburtle.net/bob/hash/avalanche.html to choose +the operations, constants, and arrangements of the variables. + +This does not achieve avalanche. There are input bits of (a,b,c) +that fail to affect some output bits of (a,b,c), especially of a. The +most thoroughly mixed value is c, but it doesn't really even achieve +avalanche in c. + +This allows some parallelism. Read-after-writes are good at doubling +the number of bits affected, so the goal of mixing pulls in the opposite +direction as the goal of parallelism. I did what I could. Rotates +seem to cost as much as shifts on every machine I could lay my hands +on, and rotates are much kinder to the top and bottom bits, so I used +rotates. +------------------------------------------------------------------------------- +*/ +#define mix(a,b,c) \ +{ \ + a -= c; a ^= rot(c, 4); c += b; \ + b -= a; b ^= rot(a, 6); a += c; \ + c -= b; c ^= rot(b, 8); b += a; \ + a -= c; a ^= rot(c,16); c += b; \ + b -= a; b ^= rot(a,19); a += c; \ + c -= b; c ^= rot(b, 4); b += a; \ +} + +/* +------------------------------------------------------------------------------- +final -- final mixing of 3 32-bit values (a,b,c) into c + +Pairs of (a,b,c) values differing in only a few bits will usually +produce values of c that look totally different. This was tested for +* pairs that differed by one bit, by two bits, in any combination + of top bits of (a,b,c), or in any combination of bottom bits of + (a,b,c). +* "differ" is defined as +, -, ^, or ~^. For + and -, I transformed + the output delta to a Gray code (a^(a>>1)) so a string of 1's (as + is commonly produced by subtraction) look like a single 1-bit + difference. +* the base values were pseudorandom, all zero but one bit set, or + all zero plus a counter that starts at zero. + +These constants passed: + 14 11 25 16 4 14 24 + 12 14 25 16 4 14 24 +and these came close: + 4 8 15 26 3 22 24 + 10 8 15 26 3 22 24 + 11 8 15 26 3 22 24 +------------------------------------------------------------------------------- +*/ +#define final(a,b,c) \ +{ \ + c ^= b; c -= rot(b,14); \ + a ^= c; a -= rot(c,11); \ + b ^= a; b -= rot(a,25); \ + c ^= b; c -= rot(b,16); \ + a ^= c; a -= rot(c,4); \ + b ^= a; b -= rot(a,14); \ + c ^= b; c -= rot(b,24); \ +} + +/* +-------------------------------------------------------------------- + This works on all machines. To be useful, it requires + -- that the key be an array of uint32_t's, and + -- that the length be the number of uint32_t's in the key + + The function hashword() is identical to hashlittle() on little-endian + machines, and identical to hashbig() on big-endian machines, + except that the length has to be measured in uint32_ts rather than in + bytes. hashlittle() is more complicated than hashword() only because + hashlittle() has to dance around fitting the key bytes into registers. +-------------------------------------------------------------------- +*/ +uint32_t hashword( +const uint32_t *k, /* the key, an array of uint32_t values */ +size_t length, /* the length of the key, in uint32_ts */ +uint32_t initval) /* the previous hash, or an arbitrary value */ +{ + uint32_t a,b,c; + + /* Set up the internal state */ + a = b = c = raninit + (((uint32_t)length)<<2) + initval; + + /*------------------------------------------------- handle most of the key */ + while (length > 3) + { + a += k[0]; + b += k[1]; + c += k[2]; + mix(a,b,c); + length -= 3; + k += 3; + } + + /*------------------------------------------- handle the last 3 uint32_t's */ + switch(length) /* all the case statements fall through */ + { + case 3 : c+=k[2]; + case 2 : b+=k[1]; + case 1 : a+=k[0]; + final(a,b,c); + case 0: /* case 0: nothing left to add */ + break; + } + /*------------------------------------------------------ report the result */ + return c; +} + + +#ifdef SELF_TEST + +/* +-------------------------------------------------------------------- +hashword2() -- same as hashword(), but take two seeds and return two +32-bit values. pc and pb must both be nonnull, and *pc and *pb must +both be initialized with seeds. If you pass in (*pb)==0, the output +(*pc) will be the same as the return value from hashword(). +-------------------------------------------------------------------- +*/ +void hashword2 ( +const uint32_t *k, /* the key, an array of uint32_t values */ +size_t length, /* the length of the key, in uint32_ts */ +uint32_t *pc, /* IN: seed OUT: primary hash value */ +uint32_t *pb) /* IN: more seed OUT: secondary hash value */ +{ + uint32_t a,b,c; + + /* Set up the internal state */ + a = b = c = raninit + ((uint32_t)(length<<2)) + *pc; + c += *pb; + + /*------------------------------------------------- handle most of the key */ + while (length > 3) + { + a += k[0]; + b += k[1]; + c += k[2]; + mix(a,b,c); + length -= 3; + k += 3; + } + + /*------------------------------------------- handle the last 3 uint32_t's */ + switch(length) /* all the case statements fall through */ + { + case 3 : c+=k[2]; + case 2 : b+=k[1]; + case 1 : a+=k[0]; + final(a,b,c); + case 0: /* case 0: nothing left to add */ + break; + } + /*------------------------------------------------------ report the result */ + *pc=c; *pb=b; +} + +#endif /* SELF_TEST */ + +/* +------------------------------------------------------------------------------- +hashlittle() -- hash a variable-length key into a 32-bit value + k : the key (the unaligned variable-length array of bytes) + length : the length of the key, counting by bytes + initval : can be any 4-byte value +Returns a 32-bit value. Every bit of the key affects every bit of +the return value. Two keys differing by one or two bits will have +totally different hash values. + +The best hash table sizes are powers of 2. There is no need to do +mod a prime (mod is sooo slow!). If you need less than 32 bits, +use a bitmask. For example, if you need only 10 bits, do + h = (h & hashmask(10)); +In which case, the hash table should have hashsize(10) elements. + +If you are hashing n strings (uint8_t **)k, do it like this: + for (i=0, h=0; i<n; ++i) h = hashlittle( k[i], len[i], h); + +By Bob Jenkins, 2006. bob_jenkins@burtleburtle.net. You may use this +code any way you wish, private, educational, or commercial. It's free. + +Use for hash table lookup, or anything where one collision in 2^^32 is +acceptable. Do NOT use for cryptographic purposes. +------------------------------------------------------------------------------- +*/ + +uint32_t hashlittle( const void *key, size_t length, uint32_t initval) +{ + uint32_t a,b,c; /* internal state */ + union { const void *ptr; size_t i; } u; /* needed for Mac Powerbook G4 */ + + /* Set up the internal state */ + a = b = c = raninit + ((uint32_t)length) + initval; + + u.ptr = key; + if (HASH_LITTLE_ENDIAN && ((u.i & 0x3) == 0)) { + const uint32_t *k = (const uint32_t *)key; /* read 32-bit chunks */ +#ifdef VALGRIND + const uint8_t *k8; +#endif + + /*------ all but last block: aligned reads and affect 32 bits of (a,b,c) */ + while (length > 12) + { + a += k[0]; + b += k[1]; + c += k[2]; + mix(a,b,c); + length -= 12; + k += 3; + } + + /*----------------------------- handle the last (probably partial) block */ + /* + * "k[2]&0xffffff" actually reads beyond the end of the string, but + * then masks off the part it's not allowed to read. Because the + * string is aligned, the masked-off tail is in the same word as the + * rest of the string. Every machine with memory protection I've seen + * does it on word boundaries, so is OK with this. But VALGRIND will + * still catch it and complain. The masking trick does make the hash + * noticably faster for short strings (like English words). + */ +#ifndef VALGRIND + + switch(length) + { + case 12: c+=k[2]; b+=k[1]; a+=k[0]; break; + case 11: c+=k[2]&0xffffff; b+=k[1]; a+=k[0]; break; + case 10: c+=k[2]&0xffff; b+=k[1]; a+=k[0]; break; + case 9 : c+=k[2]&0xff; b+=k[1]; a+=k[0]; break; + case 8 : b+=k[1]; a+=k[0]; break; + case 7 : b+=k[1]&0xffffff; a+=k[0]; break; + case 6 : b+=k[1]&0xffff; a+=k[0]; break; + case 5 : b+=k[1]&0xff; a+=k[0]; break; + case 4 : a+=k[0]; break; + case 3 : a+=k[0]&0xffffff; break; + case 2 : a+=k[0]&0xffff; break; + case 1 : a+=k[0]&0xff; break; + case 0 : return c; /* zero length strings require no mixing */ + } + +#else /* make valgrind happy */ + + k8 = (const uint8_t *)k; + switch(length) + { + case 12: c+=k[2]; b+=k[1]; a+=k[0]; break; + case 11: c+=((uint32_t)k8[10])<<16; /* fall through */ + case 10: c+=((uint32_t)k8[9])<<8; /* fall through */ + case 9 : c+=k8[8]; /* fall through */ + case 8 : b+=k[1]; a+=k[0]; break; + case 7 : b+=((uint32_t)k8[6])<<16; /* fall through */ + case 6 : b+=((uint32_t)k8[5])<<8; /* fall through */ + case 5 : b+=k8[4]; /* fall through */ + case 4 : a+=k[0]; break; + case 3 : a+=((uint32_t)k8[2])<<16; /* fall through */ + case 2 : a+=((uint32_t)k8[1])<<8; /* fall through */ + case 1 : a+=k8[0]; break; + case 0 : return c; + } + +#endif /* !valgrind */ + + } else if (HASH_LITTLE_ENDIAN && ((u.i & 0x1) == 0)) { + const uint16_t *k = (const uint16_t *)key; /* read 16-bit chunks */ + const uint8_t *k8; + + /*--------------- all but last block: aligned reads and different mixing */ + while (length > 12) + { + a += k[0] + (((uint32_t)k[1])<<16); + b += k[2] + (((uint32_t)k[3])<<16); + c += k[4] + (((uint32_t)k[5])<<16); + mix(a,b,c); + length -= 12; + k += 6; + } + + /*----------------------------- handle the last (probably partial) block */ + k8 = (const uint8_t *)k; + switch(length) + { + case 12: c+=k[4]+(((uint32_t)k[5])<<16); + b+=k[2]+(((uint32_t)k[3])<<16); + a+=k[0]+(((uint32_t)k[1])<<16); + break; + case 11: c+=((uint32_t)k8[10])<<16; /* fall through */ + case 10: c+=k[4]; + b+=k[2]+(((uint32_t)k[3])<<16); + a+=k[0]+(((uint32_t)k[1])<<16); + break; + case 9 : c+=k8[8]; /* fall through */ + case 8 : b+=k[2]+(((uint32_t)k[3])<<16); + a+=k[0]+(((uint32_t)k[1])<<16); + break; + case 7 : b+=((uint32_t)k8[6])<<16; /* fall through */ + case 6 : b+=k[2]; + a+=k[0]+(((uint32_t)k[1])<<16); + break; + case 5 : b+=k8[4]; /* fall through */ + case 4 : a+=k[0]+(((uint32_t)k[1])<<16); + break; + case 3 : a+=((uint32_t)k8[2])<<16; /* fall through */ + case 2 : a+=k[0]; + break; + case 1 : a+=k8[0]; + break; + case 0 : return c; /* zero length requires no mixing */ + } + + } else { /* need to read the key one byte at a time */ + const uint8_t *k = (const uint8_t *)key; + + /*--------------- all but the last block: affect some 32 bits of (a,b,c) */ + while (length > 12) + { + a += k[0]; + a += ((uint32_t)k[1])<<8; + a += ((uint32_t)k[2])<<16; + a += ((uint32_t)k[3])<<24; + b += k[4]; + b += ((uint32_t)k[5])<<8; + b += ((uint32_t)k[6])<<16; + b += ((uint32_t)k[7])<<24; + c += k[8]; + c += ((uint32_t)k[9])<<8; + c += ((uint32_t)k[10])<<16; + c += ((uint32_t)k[11])<<24; + mix(a,b,c); + length -= 12; + k += 12; + } + + /*-------------------------------- last block: affect all 32 bits of (c) */ + switch(length) /* all the case statements fall through */ + { + case 12: c+=((uint32_t)k[11])<<24; + case 11: c+=((uint32_t)k[10])<<16; + case 10: c+=((uint32_t)k[9])<<8; + case 9 : c+=k[8]; + case 8 : b+=((uint32_t)k[7])<<24; + case 7 : b+=((uint32_t)k[6])<<16; + case 6 : b+=((uint32_t)k[5])<<8; + case 5 : b+=k[4]; + case 4 : a+=((uint32_t)k[3])<<24; + case 3 : a+=((uint32_t)k[2])<<16; + case 2 : a+=((uint32_t)k[1])<<8; + case 1 : a+=k[0]; + break; + case 0 : return c; + } + } + + final(a,b,c); + return c; +} + +#ifdef SELF_TEST + +/* + * hashlittle2: return 2 32-bit hash values + * + * This is identical to hashlittle(), except it returns two 32-bit hash + * values instead of just one. This is good enough for hash table + * lookup with 2^^64 buckets, or if you want a second hash if you're not + * happy with the first, or if you want a probably-unique 64-bit ID for + * the key. *pc is better mixed than *pb, so use *pc first. If you want + * a 64-bit value do something like "*pc + (((uint64_t)*pb)<<32)". + */ +void hashlittle2( + const void *key, /* the key to hash */ + size_t length, /* length of the key */ + uint32_t *pc, /* IN: primary initval, OUT: primary hash */ + uint32_t *pb) /* IN: secondary initval, OUT: secondary hash */ +{ + uint32_t a,b,c; /* internal state */ + union { const void *ptr; size_t i; } u; /* needed for Mac Powerbook G4 */ + + /* Set up the internal state */ + a = b = c = raninit + ((uint32_t)length) + *pc; + c += *pb; + + u.ptr = key; + if (HASH_LITTLE_ENDIAN && ((u.i & 0x3) == 0)) { + const uint32_t *k = (const uint32_t *)key; /* read 32-bit chunks */ +#ifdef VALGRIND + const uint8_t *k8; +#endif + + /*------ all but last block: aligned reads and affect 32 bits of (a,b,c) */ + while (length > 12) + { + a += k[0]; + b += k[1]; + c += k[2]; + mix(a,b,c); + length -= 12; + k += 3; + } + + /*----------------------------- handle the last (probably partial) block */ + /* + * "k[2]&0xffffff" actually reads beyond the end of the string, but + * then masks off the part it's not allowed to read. Because the + * string is aligned, the masked-off tail is in the same word as the + * rest of the string. Every machine with memory protection I've seen + * does it on word boundaries, so is OK with this. But VALGRIND will + * still catch it and complain. The masking trick does make the hash + * noticably faster for short strings (like English words). + */ +#ifndef VALGRIND + + switch(length) + { + case 12: c+=k[2]; b+=k[1]; a+=k[0]; break; + case 11: c+=k[2]&0xffffff; b+=k[1]; a+=k[0]; break; + case 10: c+=k[2]&0xffff; b+=k[1]; a+=k[0]; break; + case 9 : c+=k[2]&0xff; b+=k[1]; a+=k[0]; break; + case 8 : b+=k[1]; a+=k[0]; break; + case 7 : b+=k[1]&0xffffff; a+=k[0]; break; + case 6 : b+=k[1]&0xffff; a+=k[0]; break; + case 5 : b+=k[1]&0xff; a+=k[0]; break; + case 4 : a+=k[0]; break; + case 3 : a+=k[0]&0xffffff; break; + case 2 : a+=k[0]&0xffff; break; + case 1 : a+=k[0]&0xff; break; + case 0 : *pc=c; *pb=b; return; /* zero length strings require no mixing */ + } + +#else /* make valgrind happy */ + + k8 = (const uint8_t *)k; + switch(length) + { + case 12: c+=k[2]; b+=k[1]; a+=k[0]; break; + case 11: c+=((uint32_t)k8[10])<<16; /* fall through */ + case 10: c+=((uint32_t)k8[9])<<8; /* fall through */ + case 9 : c+=k8[8]; /* fall through */ + case 8 : b+=k[1]; a+=k[0]; break; + case 7 : b+=((uint32_t)k8[6])<<16; /* fall through */ + case 6 : b+=((uint32_t)k8[5])<<8; /* fall through */ + case 5 : b+=k8[4]; /* fall through */ + case 4 : a+=k[0]; break; + case 3 : a+=((uint32_t)k8[2])<<16; /* fall through */ + case 2 : a+=((uint32_t)k8[1])<<8; /* fall through */ + case 1 : a+=k8[0]; break; + case 0 : *pc=c; *pb=b; return; /* zero length strings require no mixing */ + } + +#endif /* !valgrind */ + + } else if (HASH_LITTLE_ENDIAN && ((u.i & 0x1) == 0)) { + const uint16_t *k = (const uint16_t *)key; /* read 16-bit chunks */ + const uint8_t *k8; + + /*--------------- all but last block: aligned reads and different mixing */ + while (length > 12) + { + a += k[0] + (((uint32_t)k[1])<<16); + b += k[2] + (((uint32_t)k[3])<<16); + c += k[4] + (((uint32_t)k[5])<<16); + mix(a,b,c); + length -= 12; + k += 6; + } + + /*----------------------------- handle the last (probably partial) block */ + k8 = (const uint8_t *)k; + switch(length) + { + case 12: c+=k[4]+(((uint32_t)k[5])<<16); + b+=k[2]+(((uint32_t)k[3])<<16); + a+=k[0]+(((uint32_t)k[1])<<16); + break; + case 11: c+=((uint32_t)k8[10])<<16; /* fall through */ + case 10: c+=k[4]; + b+=k[2]+(((uint32_t)k[3])<<16); + a+=k[0]+(((uint32_t)k[1])<<16); + break; + case 9 : c+=k8[8]; /* fall through */ + case 8 : b+=k[2]+(((uint32_t)k[3])<<16); + a+=k[0]+(((uint32_t)k[1])<<16); + break; + case 7 : b+=((uint32_t)k8[6])<<16; /* fall through */ + case 6 : b+=k[2]; + a+=k[0]+(((uint32_t)k[1])<<16); + break; + case 5 : b+=k8[4]; /* fall through */ + case 4 : a+=k[0]+(((uint32_t)k[1])<<16); + break; + case 3 : a+=((uint32_t)k8[2])<<16; /* fall through */ + case 2 : a+=k[0]; + break; + case 1 : a+=k8[0]; + break; + case 0 : *pc=c; *pb=b; return; /* zero length strings require no mixing */ + } + + } else { /* need to read the key one byte at a time */ + const uint8_t *k = (const uint8_t *)key; + + /*--------------- all but the last block: affect some 32 bits of (a,b,c) */ + while (length > 12) + { + a += k[0]; + a += ((uint32_t)k[1])<<8; + a += ((uint32_t)k[2])<<16; + a += ((uint32_t)k[3])<<24; + b += k[4]; + b += ((uint32_t)k[5])<<8; + b += ((uint32_t)k[6])<<16; + b += ((uint32_t)k[7])<<24; + c += k[8]; + c += ((uint32_t)k[9])<<8; + c += ((uint32_t)k[10])<<16; + c += ((uint32_t)k[11])<<24; + mix(a,b,c); + length -= 12; + k += 12; + } + + /*-------------------------------- last block: affect all 32 bits of (c) */ + switch(length) /* all the case statements fall through */ + { + case 12: c+=((uint32_t)k[11])<<24; + case 11: c+=((uint32_t)k[10])<<16; + case 10: c+=((uint32_t)k[9])<<8; + case 9 : c+=k[8]; + case 8 : b+=((uint32_t)k[7])<<24; + case 7 : b+=((uint32_t)k[6])<<16; + case 6 : b+=((uint32_t)k[5])<<8; + case 5 : b+=k[4]; + case 4 : a+=((uint32_t)k[3])<<24; + case 3 : a+=((uint32_t)k[2])<<16; + case 2 : a+=((uint32_t)k[1])<<8; + case 1 : a+=k[0]; + break; + case 0 : *pc=c; *pb=b; return; /* zero length strings require no mixing */ + } + } + + final(a,b,c); + *pc=c; *pb=b; +} + +#endif /* SELF_TEST */ + +#if 0 /* currently not used */ + +/* + * hashbig(): + * This is the same as hashword() on big-endian machines. It is different + * from hashlittle() on all machines. hashbig() takes advantage of + * big-endian byte ordering. + */ +uint32_t hashbig( const void *key, size_t length, uint32_t initval) +{ + uint32_t a,b,c; + union { const void *ptr; size_t i; } u; /* to cast key to (size_t) happily */ + + /* Set up the internal state */ + a = b = c = raninit + ((uint32_t)length) + initval; + + u.ptr = key; + if (HASH_BIG_ENDIAN && ((u.i & 0x3) == 0)) { + const uint32_t *k = (const uint32_t *)key; /* read 32-bit chunks */ +#ifdef VALGRIND + const uint8_t *k8; +#endif + + /*------ all but last block: aligned reads and affect 32 bits of (a,b,c) */ + while (length > 12) + { + a += k[0]; + b += k[1]; + c += k[2]; + mix(a,b,c); + length -= 12; + k += 3; + } + + /*----------------------------- handle the last (probably partial) block */ + /* + * "k[2]<<8" actually reads beyond the end of the string, but + * then shifts out the part it's not allowed to read. Because the + * string is aligned, the illegal read is in the same word as the + * rest of the string. Every machine with memory protection I've seen + * does it on word boundaries, so is OK with this. But VALGRIND will + * still catch it and complain. The masking trick does make the hash + * noticably faster for short strings (like English words). + */ +#ifndef VALGRIND + + switch(length) + { + case 12: c+=k[2]; b+=k[1]; a+=k[0]; break; + case 11: c+=k[2]&0xffffff00; b+=k[1]; a+=k[0]; break; + case 10: c+=k[2]&0xffff0000; b+=k[1]; a+=k[0]; break; + case 9 : c+=k[2]&0xff000000; b+=k[1]; a+=k[0]; break; + case 8 : b+=k[1]; a+=k[0]; break; + case 7 : b+=k[1]&0xffffff00; a+=k[0]; break; + case 6 : b+=k[1]&0xffff0000; a+=k[0]; break; + case 5 : b+=k[1]&0xff000000; a+=k[0]; break; + case 4 : a+=k[0]; break; + case 3 : a+=k[0]&0xffffff00; break; + case 2 : a+=k[0]&0xffff0000; break; + case 1 : a+=k[0]&0xff000000; break; + case 0 : return c; /* zero length strings require no mixing */ + } + +#else /* make valgrind happy */ + + k8 = (const uint8_t *)k; + switch(length) /* all the case statements fall through */ + { + case 12: c+=k[2]; b+=k[1]; a+=k[0]; break; + case 11: c+=((uint32_t)k8[10])<<8; /* fall through */ + case 10: c+=((uint32_t)k8[9])<<16; /* fall through */ + case 9 : c+=((uint32_t)k8[8])<<24; /* fall through */ + case 8 : b+=k[1]; a+=k[0]; break; + case 7 : b+=((uint32_t)k8[6])<<8; /* fall through */ + case 6 : b+=((uint32_t)k8[5])<<16; /* fall through */ + case 5 : b+=((uint32_t)k8[4])<<24; /* fall through */ + case 4 : a+=k[0]; break; + case 3 : a+=((uint32_t)k8[2])<<8; /* fall through */ + case 2 : a+=((uint32_t)k8[1])<<16; /* fall through */ + case 1 : a+=((uint32_t)k8[0])<<24; break; + case 0 : return c; + } + +#endif /* !VALGRIND */ + + } else { /* need to read the key one byte at a time */ + const uint8_t *k = (const uint8_t *)key; + + /*--------------- all but the last block: affect some 32 bits of (a,b,c) */ + while (length > 12) + { + a += ((uint32_t)k[0])<<24; + a += ((uint32_t)k[1])<<16; + a += ((uint32_t)k[2])<<8; + a += ((uint32_t)k[3]); + b += ((uint32_t)k[4])<<24; + b += ((uint32_t)k[5])<<16; + b += ((uint32_t)k[6])<<8; + b += ((uint32_t)k[7]); + c += ((uint32_t)k[8])<<24; + c += ((uint32_t)k[9])<<16; + c += ((uint32_t)k[10])<<8; + c += ((uint32_t)k[11]); + mix(a,b,c); + length -= 12; + k += 12; + } + + /*-------------------------------- last block: affect all 32 bits of (c) */ + switch(length) /* all the case statements fall through */ + { + case 12: c+=k[11]; + case 11: c+=((uint32_t)k[10])<<8; + case 10: c+=((uint32_t)k[9])<<16; + case 9 : c+=((uint32_t)k[8])<<24; + case 8 : b+=k[7]; + case 7 : b+=((uint32_t)k[6])<<8; + case 6 : b+=((uint32_t)k[5])<<16; + case 5 : b+=((uint32_t)k[4])<<24; + case 4 : a+=k[3]; + case 3 : a+=((uint32_t)k[2])<<8; + case 2 : a+=((uint32_t)k[1])<<16; + case 1 : a+=((uint32_t)k[0])<<24; + break; + case 0 : return c; + } + } + + final(a,b,c); + return c; +} + +#endif /* 0 == currently not used */ + +#ifdef SELF_TEST + +/* used for timings */ +void driver1() +{ + uint8_t buf[256]; + uint32_t i; + uint32_t h=0; + time_t a,z; + + time(&a); + for (i=0; i<256; ++i) buf[i] = 'x'; + for (i=0; i<1; ++i) + { + h = hashlittle(&buf[0],1,h); + } + time(&z); + if (z-a > 0) printf("time %d %.8x\n", z-a, h); +} + +/* check that every input bit changes every output bit half the time */ +#define HASHSTATE 1 +#define HASHLEN 1 +#define MAXPAIR 60 +#define MAXLEN 70 +void driver2() +{ + uint8_t qa[MAXLEN+1], qb[MAXLEN+2], *a = &qa[0], *b = &qb[1]; + uint32_t c[HASHSTATE], d[HASHSTATE], i=0, j=0, k, l, m=0, z; + uint32_t e[HASHSTATE],f[HASHSTATE],g[HASHSTATE],h[HASHSTATE]; + uint32_t x[HASHSTATE],y[HASHSTATE]; + uint32_t hlen; + + printf("No more than %d trials should ever be needed \n",MAXPAIR/2); + for (hlen=0; hlen < MAXLEN; ++hlen) + { + z=0; + for (i=0; i<hlen; ++i) /*----------------------- for each input byte, */ + { + for (j=0; j<8; ++j) /*------------------------ for each input bit, */ + { + for (m=1; m<8; ++m) /*------------ for serveral possible initvals, */ + { + for (l=0; l<HASHSTATE; ++l) + e[l]=f[l]=g[l]=h[l]=x[l]=y[l]=~((uint32_t)0); + + /*---- check that every output bit is affected by that input bit */ + for (k=0; k<MAXPAIR; k+=2) + { + uint32_t finished=1; + /* keys have one bit different */ + for (l=0; l<hlen+1; ++l) {a[l] = b[l] = (uint8_t)0;} + /* have a and b be two keys differing in only one bit */ + a[i] ^= (k<<j); + a[i] ^= (k>>(8-j)); + c[0] = hashlittle(a, hlen, m); + b[i] ^= ((k+1)<<j); + b[i] ^= ((k+1)>>(8-j)); + d[0] = hashlittle(b, hlen, m); + /* check every bit is 1, 0, set, and not set at least once */ + for (l=0; l<HASHSTATE; ++l) + { + e[l] &= (c[l]^d[l]); + f[l] &= ~(c[l]^d[l]); + g[l] &= c[l]; + h[l] &= ~c[l]; + x[l] &= d[l]; + y[l] &= ~d[l]; + if (e[l]|f[l]|g[l]|h[l]|x[l]|y[l]) finished=0; + } + if (finished) break; + } + if (k>z) z=k; + if (k==MAXPAIR) + { + printf("Some bit didn't change: "); + printf("%.8x %.8x %.8x %.8x %.8x %.8x ", + e[0],f[0],g[0],h[0],x[0],y[0]); + printf("i %d j %d m %d len %d\n", i, j, m, hlen); + } + if (z==MAXPAIR) goto done; + } + } + } + done: + if (z < MAXPAIR) + { + printf("Mix success %2d bytes %2d initvals ",i,m); + printf("required %d trials\n", z/2); + } + } + printf("\n"); +} + +/* Check for reading beyond the end of the buffer and alignment problems */ +void driver3() +{ + uint8_t buf[MAXLEN+20], *b; + uint32_t len; + uint8_t q[] = "This is the time for all good men to come to the aid of their country..."; + uint32_t h; + uint8_t qq[] = "xThis is the time for all good men to come to the aid of their country..."; + uint32_t i; + uint8_t qqq[] = "xxThis is the time for all good men to come to the aid of their country..."; + uint32_t j; + uint8_t qqqq[] = "xxxThis is the time for all good men to come to the aid of their country..."; + uint32_t ref,x,y; + uint8_t *p; + + printf("Endianness. These lines should all be the same (for values filled in):\n"); + printf("%.8x %.8x %.8x\n", + hashword((const uint32_t *)q, (sizeof(q)-1)/4, 13), + hashword((const uint32_t *)q, (sizeof(q)-5)/4, 13), + hashword((const uint32_t *)q, (sizeof(q)-9)/4, 13)); + p = q; + printf("%.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x\n", + hashlittle(p, sizeof(q)-1, 13), hashlittle(p, sizeof(q)-2, 13), + hashlittle(p, sizeof(q)-3, 13), hashlittle(p, sizeof(q)-4, 13), + hashlittle(p, sizeof(q)-5, 13), hashlittle(p, sizeof(q)-6, 13), + hashlittle(p, sizeof(q)-7, 13), hashlittle(p, sizeof(q)-8, 13), + hashlittle(p, sizeof(q)-9, 13), hashlittle(p, sizeof(q)-10, 13), + hashlittle(p, sizeof(q)-11, 13), hashlittle(p, sizeof(q)-12, 13)); + p = &qq[1]; + printf("%.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x\n", + hashlittle(p, sizeof(q)-1, 13), hashlittle(p, sizeof(q)-2, 13), + hashlittle(p, sizeof(q)-3, 13), hashlittle(p, sizeof(q)-4, 13), + hashlittle(p, sizeof(q)-5, 13), hashlittle(p, sizeof(q)-6, 13), + hashlittle(p, sizeof(q)-7, 13), hashlittle(p, sizeof(q)-8, 13), + hashlittle(p, sizeof(q)-9, 13), hashlittle(p, sizeof(q)-10, 13), + hashlittle(p, sizeof(q)-11, 13), hashlittle(p, sizeof(q)-12, 13)); + p = &qqq[2]; + printf("%.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x\n", + hashlittle(p, sizeof(q)-1, 13), hashlittle(p, sizeof(q)-2, 13), + hashlittle(p, sizeof(q)-3, 13), hashlittle(p, sizeof(q)-4, 13), + hashlittle(p, sizeof(q)-5, 13), hashlittle(p, sizeof(q)-6, 13), + hashlittle(p, sizeof(q)-7, 13), hashlittle(p, sizeof(q)-8, 13), + hashlittle(p, sizeof(q)-9, 13), hashlittle(p, sizeof(q)-10, 13), + hashlittle(p, sizeof(q)-11, 13), hashlittle(p, sizeof(q)-12, 13)); + p = &qqqq[3]; + printf("%.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x %.8x\n", + hashlittle(p, sizeof(q)-1, 13), hashlittle(p, sizeof(q)-2, 13), + hashlittle(p, sizeof(q)-3, 13), hashlittle(p, sizeof(q)-4, 13), + hashlittle(p, sizeof(q)-5, 13), hashlittle(p, sizeof(q)-6, 13), + hashlittle(p, sizeof(q)-7, 13), hashlittle(p, sizeof(q)-8, 13), + hashlittle(p, sizeof(q)-9, 13), hashlittle(p, sizeof(q)-10, 13), + hashlittle(p, sizeof(q)-11, 13), hashlittle(p, sizeof(q)-12, 13)); + printf("\n"); + + /* check that hashlittle2 and hashlittle produce the same results */ + i=47; j=0; + hashlittle2(q, sizeof(q), &i, &j); + if (hashlittle(q, sizeof(q), 47) != i) + printf("hashlittle2 and hashlittle mismatch\n"); + + /* check that hashword2 and hashword produce the same results */ + len = raninit; + i=47, j=0; + hashword2(&len, 1, &i, &j); + if (hashword(&len, 1, 47) != i) + printf("hashword2 and hashword mismatch %x %x\n", + i, hashword(&len, 1, 47)); + + /* check hashlittle doesn't read before or after the ends of the string */ + for (h=0, b=buf+1; h<8; ++h, ++b) + { + for (i=0; i<MAXLEN; ++i) + { + len = i; + for (j=0; j<i; ++j) *(b+j)=0; + + /* these should all be equal */ + ref = hashlittle(b, len, (uint32_t)1); + *(b+i)=(uint8_t)~0; + *(b-1)=(uint8_t)~0; + x = hashlittle(b, len, (uint32_t)1); + y = hashlittle(b, len, (uint32_t)1); + if ((ref != x) || (ref != y)) + { + printf("alignment error: %.8x %.8x %.8x %d %d\n",ref,x,y, + h, i); + } + } + } +} + +/* check for problems with nulls */ + void driver4() +{ + uint8_t buf[1]; + uint32_t h,i,state[HASHSTATE]; + + + buf[0] = ~0; + for (i=0; i<HASHSTATE; ++i) state[i] = 1; + printf("These should all be different\n"); + for (i=0, h=0; i<8; ++i) + { + h = hashlittle(buf, 0, h); + printf("%2ld 0-byte strings, hash is %.8x\n", i, h); + } +} + + +int main() +{ + driver1(); /* test that the key is hashed: used for timings */ + driver2(); /* test that whole key is hashed thoroughly */ + driver3(); /* test that nothing but the key is hashed */ + driver4(); /* test hashing multiple buffers (all buffers are null) */ + return 1; +} + +#endif /* SELF_TEST */ diff --git a/external/unbound/util/storage/lookup3.h b/external/unbound/util/storage/lookup3.h new file mode 100644 index 000000000..59dad7c48 --- /dev/null +++ b/external/unbound/util/storage/lookup3.h @@ -0,0 +1,71 @@ +/* + * util/storage/lookup3.h - header file for hashing functions. + * + * Copyright (c) 2007, NLnet Labs. All rights reserved. + * + * This software is open source. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * Neither the name of the NLNET LABS nor the names of its contributors may + * be used to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/** + * \file + * + * This file contains header definitions for the hash functions we use. + * The hash functions are public domain (see lookup3.c). + */ + +#ifndef UTIL_STORAGE_LOOKUP3_H +#define UTIL_STORAGE_LOOKUP3_H + +/** + * Hash key made of 4byte chunks. + * @param k: the key, an array of uint32_t values + * @param length: the length of the key, in uint32_ts + * @param initval: the previous hash, or an arbitrary value + * @return: hash value. + */ +uint32_t hashword(const uint32_t *k, size_t length, uint32_t initval); + +/** + * Hash key data. + * @param k: the key, array of uint8_t + * @param length: the length of the key, in uint8_ts + * @param initval: the previous hash, or an arbitrary value + * @return: hash value. + */ +uint32_t hashlittle(const void *k, size_t length, uint32_t initval); + +/** + * Set the randomisation initial value, set this before threads start, + * and before hashing stuff (because it changes subsequent results). + * @param v: value + */ +void hash_set_raninit(uint32_t v); + +#endif /* UTIL_STORAGE_LOOKUP3_H */ diff --git a/external/unbound/util/storage/lruhash.c b/external/unbound/util/storage/lruhash.c new file mode 100644 index 000000000..2c987a2e5 --- /dev/null +++ b/external/unbound/util/storage/lruhash.c @@ -0,0 +1,544 @@ +/* + * util/storage/lruhash.c - hashtable, hash function, LRU keeping. + * + * Copyright (c) 2007, NLnet Labs. All rights reserved. + * + * This software is open source. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * Neither the name of the NLNET LABS nor the names of its contributors may + * be used to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/** + * \file + * + * This file contains a hashtable with LRU keeping of entries. + * + */ + +#include "config.h" +#include "util/storage/lruhash.h" +#include "util/fptr_wlist.h" + +void +bin_init(struct lruhash_bin* array, size_t size) +{ + size_t i; +#ifdef THREADS_DISABLED + (void)array; +#endif + for(i=0; i<size; i++) { + lock_quick_init(&array[i].lock); + lock_protect(&array[i].lock, &array[i], + sizeof(struct lruhash_bin)); + } +} + +struct lruhash* +lruhash_create(size_t start_size, size_t maxmem, lruhash_sizefunc_t sizefunc, + lruhash_compfunc_t compfunc, lruhash_delkeyfunc_t delkeyfunc, + lruhash_deldatafunc_t deldatafunc, void* arg) +{ + struct lruhash* table = (struct lruhash*)calloc(1, + sizeof(struct lruhash)); + if(!table) + return NULL; + lock_quick_init(&table->lock); + table->sizefunc = sizefunc; + table->compfunc = compfunc; + table->delkeyfunc = delkeyfunc; + table->deldatafunc = deldatafunc; + table->cb_arg = arg; + table->size = start_size; + table->size_mask = (int)(start_size-1); + table->lru_start = NULL; + table->lru_end = NULL; + table->num = 0; + table->space_used = 0; + table->space_max = maxmem; + table->array = calloc(table->size, sizeof(struct lruhash_bin)); + if(!table->array) { + lock_quick_destroy(&table->lock); + free(table); + return NULL; + } + bin_init(table->array, table->size); + lock_protect(&table->lock, table, sizeof(*table)); + lock_protect(&table->lock, table->array, + table->size*sizeof(struct lruhash_bin)); + return table; +} + +void +bin_delete(struct lruhash* table, struct lruhash_bin* bin) +{ + struct lruhash_entry* p, *np; + void *d; + if(!bin) + return; + lock_quick_destroy(&bin->lock); + p = bin->overflow_list; + bin->overflow_list = NULL; + while(p) { + np = p->overflow_next; + d = p->data; + (*table->delkeyfunc)(p->key, table->cb_arg); + (*table->deldatafunc)(d, table->cb_arg); + p = np; + } +} + +void +bin_split(struct lruhash* table, struct lruhash_bin* newa, + int newmask) +{ + size_t i; + struct lruhash_entry *p, *np; + struct lruhash_bin* newbin; + /* move entries to new table. Notice that since hash x is mapped to + * bin x & mask, and new mask uses one more bit, so all entries in + * one bin will go into the old bin or bin | newbit */ +#ifndef THREADS_DISABLED + int newbit = newmask - table->size_mask; +#endif + /* so, really, this task could also be threaded, per bin. */ + /* LRU list is not changed */ + for(i=0; i<table->size; i++) + { + lock_quick_lock(&table->array[i].lock); + p = table->array[i].overflow_list; + /* lock both destination bins */ + lock_quick_lock(&newa[i].lock); + lock_quick_lock(&newa[newbit|i].lock); + while(p) { + np = p->overflow_next; + /* link into correct new bin */ + newbin = &newa[p->hash & newmask]; + p->overflow_next = newbin->overflow_list; + newbin->overflow_list = p; + p=np; + } + lock_quick_unlock(&newa[i].lock); + lock_quick_unlock(&newa[newbit|i].lock); + lock_quick_unlock(&table->array[i].lock); + } +} + +void +lruhash_delete(struct lruhash* table) +{ + size_t i; + if(!table) + return; + /* delete lock on hashtable to force check its OK */ + lock_quick_destroy(&table->lock); + for(i=0; i<table->size; i++) + bin_delete(table, &table->array[i]); + free(table->array); + free(table); +} + +void +bin_overflow_remove(struct lruhash_bin* bin, struct lruhash_entry* entry) +{ + struct lruhash_entry* p = bin->overflow_list; + struct lruhash_entry** prevp = &bin->overflow_list; + while(p) { + if(p == entry) { + *prevp = p->overflow_next; + return; + } + prevp = &p->overflow_next; + p = p->overflow_next; + } +} + +void +reclaim_space(struct lruhash* table, struct lruhash_entry** list) +{ + struct lruhash_entry* d; + struct lruhash_bin* bin; + log_assert(table); + /* does not delete MRU entry, so table will not be empty. */ + while(table->num > 1 && table->space_used > table->space_max) { + /* notice that since we hold the hashtable lock, nobody + can change the lru chain. So it cannot be deleted underneath + us. We still need the hashbin and entry write lock to make + sure we flush all users away from the entry. + which is unlikely, since it is LRU, if someone got a rdlock + it would be moved to front, but to be sure. */ + d = table->lru_end; + /* specialised, delete from end of double linked list, + and we know num>1, so there is a previous lru entry. */ + log_assert(d && d->lru_prev); + table->lru_end = d->lru_prev; + d->lru_prev->lru_next = NULL; + /* schedule entry for deletion */ + bin = &table->array[d->hash & table->size_mask]; + table->num --; + lock_quick_lock(&bin->lock); + bin_overflow_remove(bin, d); + d->overflow_next = *list; + *list = d; + lock_rw_wrlock(&d->lock); + table->space_used -= table->sizefunc(d->key, d->data); + if(table->markdelfunc) + (*table->markdelfunc)(d->key); + lock_rw_unlock(&d->lock); + lock_quick_unlock(&bin->lock); + } +} + +struct lruhash_entry* +bin_find_entry(struct lruhash* table, + struct lruhash_bin* bin, hashvalue_t hash, void* key) +{ + struct lruhash_entry* p = bin->overflow_list; + while(p) { + if(p->hash == hash && table->compfunc(p->key, key) == 0) + return p; + p = p->overflow_next; + } + return NULL; +} + +void +table_grow(struct lruhash* table) +{ + struct lruhash_bin* newa; + int newmask; + size_t i; + if(table->size_mask == (int)(((size_t)-1)>>1)) { + log_err("hash array malloc: size_t too small"); + return; + } + /* try to allocate new array, if not fail */ + newa = calloc(table->size*2, sizeof(struct lruhash_bin)); + if(!newa) { + log_err("hash grow: malloc failed"); + /* continue with smaller array. Though its slower. */ + return; + } + bin_init(newa, table->size*2); + newmask = (table->size_mask << 1) | 1; + bin_split(table, newa, newmask); + /* delete the old bins */ + lock_unprotect(&table->lock, table->array); + for(i=0; i<table->size; i++) { + lock_quick_destroy(&table->array[i].lock); + } + free(table->array); + + table->size *= 2; + table->size_mask = newmask; + table->array = newa; + lock_protect(&table->lock, table->array, + table->size*sizeof(struct lruhash_bin)); + return; +} + +void +lru_front(struct lruhash* table, struct lruhash_entry* entry) +{ + entry->lru_prev = NULL; + entry->lru_next = table->lru_start; + if(!table->lru_start) + table->lru_end = entry; + else table->lru_start->lru_prev = entry; + table->lru_start = entry; +} + +void +lru_remove(struct lruhash* table, struct lruhash_entry* entry) +{ + if(entry->lru_prev) + entry->lru_prev->lru_next = entry->lru_next; + else table->lru_start = entry->lru_next; + if(entry->lru_next) + entry->lru_next->lru_prev = entry->lru_prev; + else table->lru_end = entry->lru_prev; +} + +void +lru_touch(struct lruhash* table, struct lruhash_entry* entry) +{ + log_assert(table && entry); + if(entry == table->lru_start) + return; /* nothing to do */ + /* remove from current lru position */ + lru_remove(table, entry); + /* add at front */ + lru_front(table, entry); +} + +void +lruhash_insert(struct lruhash* table, hashvalue_t hash, + struct lruhash_entry* entry, void* data, void* cb_arg) +{ + struct lruhash_bin* bin; + struct lruhash_entry* found, *reclaimlist=NULL; + size_t need_size; + fptr_ok(fptr_whitelist_hash_sizefunc(table->sizefunc)); + fptr_ok(fptr_whitelist_hash_delkeyfunc(table->delkeyfunc)); + fptr_ok(fptr_whitelist_hash_deldatafunc(table->deldatafunc)); + fptr_ok(fptr_whitelist_hash_compfunc(table->compfunc)); + fptr_ok(fptr_whitelist_hash_markdelfunc(table->markdelfunc)); + need_size = table->sizefunc(entry->key, data); + if(cb_arg == NULL) cb_arg = table->cb_arg; + + /* find bin */ + lock_quick_lock(&table->lock); + bin = &table->array[hash & table->size_mask]; + lock_quick_lock(&bin->lock); + + /* see if entry exists already */ + if(!(found=bin_find_entry(table, bin, hash, entry->key))) { + /* if not: add to bin */ + entry->overflow_next = bin->overflow_list; + bin->overflow_list = entry; + lru_front(table, entry); + table->num++; + table->space_used += need_size; + } else { + /* if so: update data - needs a writelock */ + table->space_used += need_size - + (*table->sizefunc)(found->key, found->data); + (*table->delkeyfunc)(entry->key, cb_arg); + lru_touch(table, found); + lock_rw_wrlock(&found->lock); + (*table->deldatafunc)(found->data, cb_arg); + found->data = data; + lock_rw_unlock(&found->lock); + } + lock_quick_unlock(&bin->lock); + if(table->space_used > table->space_max) + reclaim_space(table, &reclaimlist); + if(table->num >= table->size) + table_grow(table); + lock_quick_unlock(&table->lock); + + /* finish reclaim if any (outside of critical region) */ + while(reclaimlist) { + struct lruhash_entry* n = reclaimlist->overflow_next; + void* d = reclaimlist->data; + (*table->delkeyfunc)(reclaimlist->key, cb_arg); + (*table->deldatafunc)(d, cb_arg); + reclaimlist = n; + } +} + +struct lruhash_entry* +lruhash_lookup(struct lruhash* table, hashvalue_t hash, void* key, int wr) +{ + struct lruhash_entry* entry; + struct lruhash_bin* bin; + fptr_ok(fptr_whitelist_hash_compfunc(table->compfunc)); + + lock_quick_lock(&table->lock); + bin = &table->array[hash & table->size_mask]; + lock_quick_lock(&bin->lock); + if((entry=bin_find_entry(table, bin, hash, key))) + lru_touch(table, entry); + lock_quick_unlock(&table->lock); + + if(entry) { + if(wr) { lock_rw_wrlock(&entry->lock); } + else { lock_rw_rdlock(&entry->lock); } + } + lock_quick_unlock(&bin->lock); + return entry; +} + +void +lruhash_remove(struct lruhash* table, hashvalue_t hash, void* key) +{ + struct lruhash_entry* entry; + struct lruhash_bin* bin; + void *d; + fptr_ok(fptr_whitelist_hash_sizefunc(table->sizefunc)); + fptr_ok(fptr_whitelist_hash_delkeyfunc(table->delkeyfunc)); + fptr_ok(fptr_whitelist_hash_deldatafunc(table->deldatafunc)); + fptr_ok(fptr_whitelist_hash_compfunc(table->compfunc)); + fptr_ok(fptr_whitelist_hash_markdelfunc(table->markdelfunc)); + + lock_quick_lock(&table->lock); + bin = &table->array[hash & table->size_mask]; + lock_quick_lock(&bin->lock); + if((entry=bin_find_entry(table, bin, hash, key))) { + bin_overflow_remove(bin, entry); + lru_remove(table, entry); + } else { + lock_quick_unlock(&table->lock); + lock_quick_unlock(&bin->lock); + return; + } + table->num--; + table->space_used -= (*table->sizefunc)(entry->key, entry->data); + lock_quick_unlock(&table->lock); + lock_rw_wrlock(&entry->lock); + if(table->markdelfunc) + (*table->markdelfunc)(entry->key); + lock_rw_unlock(&entry->lock); + lock_quick_unlock(&bin->lock); + /* finish removal */ + d = entry->data; + (*table->delkeyfunc)(entry->key, table->cb_arg); + (*table->deldatafunc)(d, table->cb_arg); +} + +/** clear bin, respecting locks, does not do space, LRU */ +static void +bin_clear(struct lruhash* table, struct lruhash_bin* bin) +{ + struct lruhash_entry* p, *np; + void *d; + lock_quick_lock(&bin->lock); + p = bin->overflow_list; + while(p) { + lock_rw_wrlock(&p->lock); + np = p->overflow_next; + d = p->data; + if(table->markdelfunc) + (*table->markdelfunc)(p->key); + lock_rw_unlock(&p->lock); + (*table->delkeyfunc)(p->key, table->cb_arg); + (*table->deldatafunc)(d, table->cb_arg); + p = np; + } + bin->overflow_list = NULL; + lock_quick_unlock(&bin->lock); +} + +void +lruhash_clear(struct lruhash* table) +{ + size_t i; + if(!table) + return; + fptr_ok(fptr_whitelist_hash_delkeyfunc(table->delkeyfunc)); + fptr_ok(fptr_whitelist_hash_deldatafunc(table->deldatafunc)); + fptr_ok(fptr_whitelist_hash_markdelfunc(table->markdelfunc)); + + lock_quick_lock(&table->lock); + for(i=0; i<table->size; i++) { + bin_clear(table, &table->array[i]); + } + table->lru_start = NULL; + table->lru_end = NULL; + table->num = 0; + table->space_used = 0; + lock_quick_unlock(&table->lock); +} + +void +lruhash_status(struct lruhash* table, const char* id, int extended) +{ + lock_quick_lock(&table->lock); + log_info("%s: %u entries, memory %u / %u", + id, (unsigned)table->num, (unsigned)table->space_used, + (unsigned)table->space_max); + log_info(" itemsize %u, array %u, mask %d", + (unsigned)(table->num? table->space_used/table->num : 0), + (unsigned)table->size, table->size_mask); + if(extended) { + size_t i; + int min=(int)table->size*2, max=-2; + for(i=0; i<table->size; i++) { + int here = 0; + struct lruhash_entry *en; + lock_quick_lock(&table->array[i].lock); + en = table->array[i].overflow_list; + while(en) { + here ++; + en = en->overflow_next; + } + lock_quick_unlock(&table->array[i].lock); + if(extended >= 2) + log_info("bin[%d] %d", (int)i, here); + if(here > max) max = here; + if(here < min) min = here; + } + log_info(" bin min %d, avg %.2lf, max %d", min, + (double)table->num/(double)table->size, max); + } + lock_quick_unlock(&table->lock); +} + +size_t +lruhash_get_mem(struct lruhash* table) +{ + size_t s; + lock_quick_lock(&table->lock); + s = sizeof(struct lruhash) + table->space_used; +#ifdef USE_THREAD_DEBUG + if(table->size != 0) { + size_t i; + for(i=0; i<table->size; i++) + s += sizeof(struct lruhash_bin) + + lock_get_mem(&table->array[i].lock); + } +#else /* no THREAD_DEBUG */ + if(table->size != 0) + s += (table->size)*(sizeof(struct lruhash_bin) + + lock_get_mem(&table->array[0].lock)); +#endif + lock_quick_unlock(&table->lock); + s += lock_get_mem(&table->lock); + return s; +} + +void +lruhash_setmarkdel(struct lruhash* table, lruhash_markdelfunc_t md) +{ + lock_quick_lock(&table->lock); + table->markdelfunc = md; + lock_quick_unlock(&table->lock); +} + +void +lruhash_traverse(struct lruhash* h, int wr, + void (*func)(struct lruhash_entry*, void*), void* arg) +{ + size_t i; + struct lruhash_entry* e; + + lock_quick_lock(&h->lock); + for(i=0; i<h->size; i++) { + lock_quick_lock(&h->array[i].lock); + for(e = h->array[i].overflow_list; e; e = e->overflow_next) { + if(wr) { + lock_rw_wrlock(&e->lock); + } else { + lock_rw_rdlock(&e->lock); + } + (*func)(e, arg); + lock_rw_unlock(&e->lock); + } + lock_quick_unlock(&h->array[i].lock); + } + lock_quick_unlock(&h->lock); +} diff --git a/external/unbound/util/storage/lruhash.h b/external/unbound/util/storage/lruhash.h new file mode 100644 index 000000000..30377d8e7 --- /dev/null +++ b/external/unbound/util/storage/lruhash.h @@ -0,0 +1,414 @@ +/* + * util/storage/lruhash.h - hashtable, hash function, LRU keeping. + * + * Copyright (c) 2007, NLnet Labs. All rights reserved. + * + * This software is open source. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * Neither the name of the NLNET LABS nor the names of its contributors may + * be used to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/** + * \file + * + * This file contains a hashtable with LRU keeping of entries. + * + * The hash table keeps a maximum memory size. Old entries are removed + * to make space for new entries. + * + * The locking strategy is as follows: + * o since (almost) every read also implies a LRU update, the + * hashtable lock is a spinlock, not rwlock. + * o the idea is to move every thread through the hash lock quickly, + * so that the next thread can access the lookup table. + * o User performs hash function. + * + * For read: + * o lock hashtable. + * o lookup hash bin. + * o lock hash bin. + * o find entry (if failed, unlock hash, unl bin, exit). + * o swizzle pointers for LRU update. + * o unlock hashtable. + * o lock entry (rwlock). + * o unlock hash bin. + * o work on entry. + * o unlock entry. + * + * To update an entry, gain writelock and change the entry. + * (the entry must keep the same hashvalue, so a data update.) + * (you cannot upgrade a readlock to a writelock, because the item may + * be deleted, it would cause race conditions. So instead, unlock and + * relookup it in the hashtable.) + * + * To delete an entry: + * o unlock the entry if you hold the lock already. + * o lock hashtable. + * o lookup hash bin. + * o lock hash bin. + * o find entry (if failed, unlock hash, unl bin, exit). + * o remove entry from hashtable bin overflow chain. + * o unlock hashtable. + * o lock entry (writelock). + * o unlock hash bin. + * o unlock entry (nobody else should be waiting for this lock, + * since you removed it from hashtable, and you got writelock while + * holding the hashbinlock so you are the only one.) + * Note you are only allowed to obtain a lock while holding hashbinlock. + * o delete entry. + * + * The above sequence is: + * o race free, works with read, write and delete. + * o but has a queue, imagine someone needing a writelock on an item. + * but there are still readlocks. The writelocker waits, but holds + * the hashbinlock. The next thread that comes in and needs the same + * hashbin will wait for the lock while holding the hashtable lock. + * thus halting the entire system on hashtable. + * This is because of the delete protection. + * Readlocks will be easier on the rwlock on entries. + * While the writer is holding writelock, similar problems happen with + * a reader or writer needing the same item. + * the scenario requires more than three threads. + * o so the queue length is 3 threads in a bad situation. The fourth is + * unable to use the hashtable. + * + * If you need to acquire locks on multiple items from the hashtable. + * o you MUST release all locks on items from the hashtable before + * doing the next lookup/insert/delete/whatever. + * o To acquire multiple items you should use a special routine that + * obtains the locks on those multiple items in one go. + */ + +#ifndef UTIL_STORAGE_LRUHASH_H +#define UTIL_STORAGE_LRUHASH_H +#include "util/locks.h" +struct lruhash_bin; +struct lruhash_entry; + +/** default start size for hash arrays */ +#define HASH_DEFAULT_STARTARRAY 1024 /* entries in array */ +/** default max memory for hash arrays */ +#define HASH_DEFAULT_MAXMEM 4*1024*1024 /* bytes */ + +/** the type of a hash value */ +typedef uint32_t hashvalue_t; + +/** + * Type of function that calculates the size of an entry. + * Result must include the size of struct lruhash_entry. + * Keys that are identical must also calculate to the same size. + * size = func(key, data). + */ +typedef size_t (*lruhash_sizefunc_t)(void*, void*); + +/** type of function that compares two keys. return 0 if equal. */ +typedef int (*lruhash_compfunc_t)(void*, void*); + +/** old keys are deleted. + * The RRset type has to revoke its ID number, markdel() is used first. + * This function is called: func(key, userarg) */ +typedef void (*lruhash_delkeyfunc_t)(void*, void*); + +/** old data is deleted. This function is called: func(data, userarg). */ +typedef void (*lruhash_deldatafunc_t)(void*, void*); + +/** mark a key as pending to be deleted (and not to be used by anyone). + * called: func(key) */ +typedef void (*lruhash_markdelfunc_t)(void*); + +/** + * Hash table that keeps LRU list of entries. + */ +struct lruhash { + /** lock for exclusive access, to the lookup array */ + lock_quick_t lock; + /** the size function for entries in this table */ + lruhash_sizefunc_t sizefunc; + /** the compare function for entries in this table. */ + lruhash_compfunc_t compfunc; + /** how to delete keys. */ + lruhash_delkeyfunc_t delkeyfunc; + /** how to delete data. */ + lruhash_deldatafunc_t deldatafunc; + /** how to mark a key pending deletion */ + lruhash_markdelfunc_t markdelfunc; + /** user argument for user functions */ + void* cb_arg; + + /** the size of the lookup array */ + size_t size; + /** size bitmask - since size is a power of 2 */ + int size_mask; + /** lookup array of bins */ + struct lruhash_bin* array; + + /** the lru list, start and end, noncyclical double linked list. */ + struct lruhash_entry* lru_start; + /** lru list end item (least recently used) */ + struct lruhash_entry* lru_end; + + /** the number of entries in the hash table. */ + size_t num; + /** the amount of space used, roughly the number of bytes in use. */ + size_t space_used; + /** the amount of space the hash table is maximally allowed to use. */ + size_t space_max; +}; + +/** + * A single bin with a linked list of entries in it. + */ +struct lruhash_bin { + /** + * Lock for exclusive access to the linked list + * This lock makes deletion of items safe in this overflow list. + */ + lock_quick_t lock; + /** linked list of overflow entries */ + struct lruhash_entry* overflow_list; +}; + +/** + * An entry into the hash table. + * To change overflow_next you need to hold the bin lock. + * To change the lru items you need to hold the hashtable lock. + * This structure is designed as part of key struct. And key pointer helps + * to get the surrounding structure. Data should be allocated on its own. + */ +struct lruhash_entry { + /** + * rwlock for access to the contents of the entry + * Note that it does _not_ cover the lru_ and overflow_ ptrs. + * Even with a writelock, you cannot change hash and key. + * You need to delete it to change hash or key. + */ + lock_rw_t lock; + /** next entry in overflow chain. Covered by hashlock and binlock. */ + struct lruhash_entry* overflow_next; + /** next entry in lru chain. covered by hashlock. */ + struct lruhash_entry* lru_next; + /** prev entry in lru chain. covered by hashlock. */ + struct lruhash_entry* lru_prev; + /** hash value of the key. It may not change, until entry deleted. */ + hashvalue_t hash; + /** key */ + void* key; + /** data */ + void* data; +}; + +/** + * Create new hash table. + * @param start_size: size of hashtable array at start, must be power of 2. + * @param maxmem: maximum amount of memory this table is allowed to use. + * @param sizefunc: calculates memory usage of entries. + * @param compfunc: compares entries, 0 on equality. + * @param delkeyfunc: deletes key. + * Calling both delkey and deldata will also free the struct lruhash_entry. + * Make it part of the key structure and delete it in delkeyfunc. + * @param deldatafunc: deletes data. + * @param arg: user argument that is passed to user function calls. + * @return: new hash table or NULL on malloc failure. + */ +struct lruhash* lruhash_create(size_t start_size, size_t maxmem, + lruhash_sizefunc_t sizefunc, lruhash_compfunc_t compfunc, + lruhash_delkeyfunc_t delkeyfunc, lruhash_deldatafunc_t deldatafunc, + void* arg); + +/** + * Delete hash table. Entries are all deleted. + * @param table: to delete. + */ +void lruhash_delete(struct lruhash* table); + +/** + * Clear hash table. Entries are all deleted, while locking them before + * doing so. At end the table is empty. + * @param table: to make empty. + */ +void lruhash_clear(struct lruhash* table); + +/** + * Insert a new element into the hashtable. + * If key is already present data pointer in that entry is updated. + * The space calculation function is called with the key, data. + * If necessary the least recently used entries are deleted to make space. + * If necessary the hash array is grown up. + * + * @param table: hash table. + * @param hash: hash value. User calculates the hash. + * @param entry: identifies the entry. + * If key already present, this entry->key is deleted immediately. + * But entry->data is set to NULL before deletion, and put into + * the existing entry. The data is then freed. + * @param data: the data. + * @param cb_override: if not null overrides the cb_arg for the deletefunc. + */ +void lruhash_insert(struct lruhash* table, hashvalue_t hash, + struct lruhash_entry* entry, void* data, void* cb_override); + +/** + * Lookup an entry in the hashtable. + * At the end of the function you hold a (read/write)lock on the entry. + * The LRU is updated for the entry (if found). + * @param table: hash table. + * @param hash: hash of key. + * @param key: what to look for, compared against entries in overflow chain. + * the hash value must be set, and must work with compare function. + * @param wr: set to true if you desire a writelock on the entry. + * with a writelock you can update the data part. + * @return: pointer to the entry or NULL. The entry is locked. + * The user must unlock the entry when done. + */ +struct lruhash_entry* lruhash_lookup(struct lruhash* table, hashvalue_t hash, + void* key, int wr); + +/** + * Touch entry, so it becomes the most recently used in the LRU list. + * Caller must hold hash table lock. The entry must be inserted already. + * @param table: hash table. + * @param entry: entry to make first in LRU. + */ +void lru_touch(struct lruhash* table, struct lruhash_entry* entry); + +/** + * Set the markdelfunction (or NULL) + */ +void lruhash_setmarkdel(struct lruhash* table, lruhash_markdelfunc_t md); + +/************************* Internal functions ************************/ +/*** these are only exposed for unit tests. ***/ + +/** + * Remove entry from hashtable. Does nothing if not found in hashtable. + * Delfunc is called for the entry. + * @param table: hash table. + * @param hash: hash of key. + * @param key: what to look for. + */ +void lruhash_remove(struct lruhash* table, hashvalue_t hash, void* key); + +/** init the hash bins for the table */ +void bin_init(struct lruhash_bin* array, size_t size); + +/** delete the hash bin and entries inside it */ +void bin_delete(struct lruhash* table, struct lruhash_bin* bin); + +/** + * Find entry in hash bin. You must have locked the bin. + * @param table: hash table with function pointers. + * @param bin: hash bin to look into. + * @param hash: hash value to look for. + * @param key: key to look for. + * @return: the entry or NULL if not found. + */ +struct lruhash_entry* bin_find_entry(struct lruhash* table, + struct lruhash_bin* bin, hashvalue_t hash, void* key); + +/** + * Remove entry from bin overflow chain. + * You must have locked the bin. + * @param bin: hash bin to look into. + * @param entry: entry ptr that needs removal. + */ +void bin_overflow_remove(struct lruhash_bin* bin, + struct lruhash_entry* entry); + +/** + * Split hash bin into two new ones. Based on increased size_mask. + * Caller must hold hash table lock. + * At the end the routine acquires all hashbin locks (in the old array). + * This makes it wait for other threads to finish with the bins. + * So the bins are ready to be deleted after this function. + * @param table: hash table with function pointers. + * @param newa: new increased array. + * @param newmask: new lookup mask. + */ +void bin_split(struct lruhash* table, struct lruhash_bin* newa, + int newmask); + +/** + * Try to make space available by deleting old entries. + * Assumes that the lock on the hashtable is being held by caller. + * Caller must not hold bin locks. + * @param table: hash table. + * @param list: list of entries that are to be deleted later. + * Entries have been removed from the hash table and writelock is held. + */ +void reclaim_space(struct lruhash* table, struct lruhash_entry** list); + +/** + * Grow the table lookup array. Becomes twice as large. + * Caller must hold the hash table lock. Must not hold any bin locks. + * Tries to grow, on malloc failure, nothing happened. + * @param table: hash table. + */ +void table_grow(struct lruhash* table); + +/** + * Put entry at front of lru. entry must be unlinked from lru. + * Caller must hold hash table lock. + * @param table: hash table with lru head and tail. + * @param entry: entry to make most recently used. + */ +void lru_front(struct lruhash* table, struct lruhash_entry* entry); + +/** + * Remove entry from lru list. + * Caller must hold hash table lock. + * @param table: hash table with lru head and tail. + * @param entry: entry to remove from lru. + */ +void lru_remove(struct lruhash* table, struct lruhash_entry* entry); + +/** + * Output debug info to the log as to state of the hash table. + * @param table: hash table. + * @param id: string printed with table to identify the hash table. + * @param extended: set to true to print statistics on overflow bin lengths. + */ +void lruhash_status(struct lruhash* table, const char* id, int extended); + +/** + * Get memory in use now by the lruhash table. + * @param table: hash table. Will be locked before use. And unlocked after. + * @return size in bytes. + */ +size_t lruhash_get_mem(struct lruhash* table); + +/** + * Traverse a lruhash. Call back for every element in the table. + * @param h: hash table. Locked before use. + * @param wr: if true writelock is obtained on element, otherwise readlock. + * @param func: function for every element. Do not lock or unlock elements. + * @param arg: user argument to func. + */ +void lruhash_traverse(struct lruhash* h, int wr, + void (*func)(struct lruhash_entry*, void*), void* arg); + +#endif /* UTIL_STORAGE_LRUHASH_H */ diff --git a/external/unbound/util/storage/slabhash.c b/external/unbound/util/storage/slabhash.c new file mode 100644 index 000000000..0618b4c72 --- /dev/null +++ b/external/unbound/util/storage/slabhash.c @@ -0,0 +1,231 @@ +/* + * util/storage/slabhash.c - hashtable consisting of several smaller tables. + * + * Copyright (c) 2007, NLnet Labs. All rights reserved. + * + * This software is open source. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * Neither the name of the NLNET LABS nor the names of its contributors may + * be used to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/** + * \file + * + * Implementation of hash table that consists of smaller hash tables. + * This results in a partitioned lruhash table. + * It cannot grow, but that gives it the ability to have multiple + * locks. Also this means there are multiple LRU lists. + */ + +#include "config.h" +#include "util/storage/slabhash.h" + +struct slabhash* slabhash_create(size_t numtables, size_t start_size, + size_t maxmem, lruhash_sizefunc_t sizefunc, + lruhash_compfunc_t compfunc, lruhash_delkeyfunc_t delkeyfunc, + lruhash_deldatafunc_t deldatafunc, void* arg) +{ + size_t i; + struct slabhash* sl = (struct slabhash*)calloc(1, + sizeof(struct slabhash)); + if(!sl) return NULL; + sl->size = numtables; + log_assert(sl->size > 0); + sl->array = (struct lruhash**)calloc(sl->size, sizeof(struct lruhash*)); + if(!sl->array) { + free(sl); + return NULL; + } + sl->mask = (uint32_t)(sl->size - 1); + if(sl->mask == 0) { + sl->shift = 0; + } else { + log_assert( (sl->size & sl->mask) == 0 + /* size must be power of 2 */ ); + sl->shift = 0; + while(!(sl->mask & 0x80000000)) { + sl->mask <<= 1; + sl->shift ++; + } + } + for(i=0; i<sl->size; i++) { + sl->array[i] = lruhash_create(start_size, maxmem / sl->size, + sizefunc, compfunc, delkeyfunc, deldatafunc, arg); + if(!sl->array[i]) { + slabhash_delete(sl); + return NULL; + } + } + return sl; +} + +void slabhash_delete(struct slabhash* sl) +{ + if(!sl) + return; + if(sl->array) { + size_t i; + for(i=0; i<sl->size; i++) + lruhash_delete(sl->array[i]); + free(sl->array); + } + free(sl); +} + +void slabhash_clear(struct slabhash* sl) +{ + size_t i; + if(!sl) + return; + for(i=0; i<sl->size; i++) + lruhash_clear(sl->array[i]); +} + +/** helper routine to calculate the slabhash index */ +static unsigned int +slab_idx(struct slabhash* sl, hashvalue_t hash) +{ + return ((hash & sl->mask) >> sl->shift); +} + +void slabhash_insert(struct slabhash* sl, hashvalue_t hash, + struct lruhash_entry* entry, void* data, void* arg) +{ + lruhash_insert(sl->array[slab_idx(sl, hash)], hash, entry, data, arg); +} + +struct lruhash_entry* slabhash_lookup(struct slabhash* sl, + hashvalue_t hash, void* key, int wr) +{ + return lruhash_lookup(sl->array[slab_idx(sl, hash)], hash, key, wr); +} + +void slabhash_remove(struct slabhash* sl, hashvalue_t hash, void* key) +{ + lruhash_remove(sl->array[slab_idx(sl, hash)], hash, key); +} + +void slabhash_status(struct slabhash* sl, const char* id, int extended) +{ + size_t i; + char num[17]; + log_info("Slabhash %s: %u tables mask=%x shift=%d", + id, (unsigned)sl->size, (unsigned)sl->mask, sl->shift); + for(i=0; i<sl->size; i++) { + snprintf(num, sizeof(num), "table %u", (unsigned)i); + lruhash_status(sl->array[i], num, extended); + } +} + +size_t slabhash_get_size(struct slabhash* sl) +{ + size_t i, total = 0; + for(i=0; i<sl->size; i++) { + lock_quick_lock(&sl->array[i]->lock); + total += sl->array[i]->space_max; + lock_quick_unlock(&sl->array[i]->lock); + } + return total; +} + +size_t slabhash_get_mem(struct slabhash* sl) +{ + size_t i, total = sizeof(*sl); + total += sizeof(struct lruhash*)*sl->size; + for(i=0; i<sl->size; i++) { + total += lruhash_get_mem(sl->array[i]); + } + return total; +} + +struct lruhash* slabhash_gettable(struct slabhash* sl, hashvalue_t hash) +{ + return sl->array[slab_idx(sl, hash)]; +} + +/* test code, here to avoid linking problems with fptr_wlist */ +/** delete key */ +static void delkey(struct slabhash_testkey* k) { + lock_rw_destroy(&k->entry.lock); free(k);} +/** delete data */ +static void deldata(struct slabhash_testdata* d) {free(d);} + +size_t test_slabhash_sizefunc(void* ATTR_UNUSED(key), void* ATTR_UNUSED(data)) +{ + return sizeof(struct slabhash_testkey) + + sizeof(struct slabhash_testdata); +} + +int test_slabhash_compfunc(void* key1, void* key2) +{ + struct slabhash_testkey* k1 = (struct slabhash_testkey*)key1; + struct slabhash_testkey* k2 = (struct slabhash_testkey*)key2; + if(k1->id == k2->id) + return 0; + if(k1->id > k2->id) + return 1; + return -1; +} + +void test_slabhash_delkey(void* key, void* ATTR_UNUSED(arg)) +{ + delkey((struct slabhash_testkey*)key); +} + +void test_slabhash_deldata(void* data, void* ATTR_UNUSED(arg)) +{ + deldata((struct slabhash_testdata*)data); +} + +void slabhash_setmarkdel(struct slabhash* sl, lruhash_markdelfunc_t md) +{ + size_t i; + for(i=0; i<sl->size; i++) { + lruhash_setmarkdel(sl->array[i], md); + } +} + +void slabhash_traverse(struct slabhash* sh, int wr, + void (*func)(struct lruhash_entry*, void*), void* arg) +{ + size_t i; + for(i=0; i<sh->size; i++) + lruhash_traverse(sh->array[i], wr, func, arg); +} + +size_t count_slabhash_entries(struct slabhash* sh) +{ + size_t slab, cnt = 0; + + for(slab=0; slab<sh->size; slab++) { + lock_quick_lock(&sh->array[slab]->lock); + cnt += sh->array[slab]->num; + lock_quick_unlock(&sh->array[slab]->lock); + } + return cnt; +} diff --git a/external/unbound/util/storage/slabhash.h b/external/unbound/util/storage/slabhash.h new file mode 100644 index 000000000..031a9da0f --- /dev/null +++ b/external/unbound/util/storage/slabhash.h @@ -0,0 +1,218 @@ +/* + * util/storage/slabhash.h - hashtable consisting of several smaller tables. + * + * Copyright (c) 2007, NLnet Labs. All rights reserved. + * + * This software is open source. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * Neither the name of the NLNET LABS nor the names of its contributors may + * be used to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/** + * \file + * + * Hash table that consists of smaller hash tables. + * It cannot grow, but that gives it the ability to have multiple + * locks. Also this means there are multiple LRU lists. + */ + +#ifndef UTIL_STORAGE_SLABHASH_H +#define UTIL_STORAGE_SLABHASH_H +#include "util/storage/lruhash.h" + +/** default number of slabs */ +#define HASH_DEFAULT_SLABS 4 + +/** + * Hash table formed from several smaller ones. + * This results in a partitioned lruhash table, a 'slashtable'. + * None of the data inside the slabhash may be altered. + * Therefore, no locks are needed to access the structure. + */ +struct slabhash { + /** the size of the array - must be power of 2 */ + size_t size; + /** size bitmask - uses high bits. */ + uint32_t mask; + /** shift right this many bits to get index into array. */ + unsigned int shift; + /** lookup array of hash tables */ + struct lruhash** array; +}; + +/** + * Create new slabbed hash table. + * @param numtables: number of hash tables to use, other parameters used to + * initialize these smaller hashtables. + * @param start_size: size of hashtable array at start, must be power of 2. + * @param maxmem: maximum amount of memory this table is allowed to use. + * so every table gets maxmem/numtables to use for itself. + * @param sizefunc: calculates memory usage of entries. + * @param compfunc: compares entries, 0 on equality. + * @param delkeyfunc: deletes key. + * @param deldatafunc: deletes data. + * @param arg: user argument that is passed to user function calls. + * @return: new hash table or NULL on malloc failure. + */ +struct slabhash* slabhash_create(size_t numtables, size_t start_size, + size_t maxmem, lruhash_sizefunc_t sizefunc, + lruhash_compfunc_t compfunc, lruhash_delkeyfunc_t delkeyfunc, + lruhash_deldatafunc_t deldatafunc, void* arg); + +/** + * Delete hash table. Entries are all deleted. + * @param table: to delete. + */ +void slabhash_delete(struct slabhash* table); + +/** + * Clear hash table. Entries are all deleted. + * @param table: to make empty. + */ +void slabhash_clear(struct slabhash* table); + +/** + * Insert a new element into the hashtable, uses lruhash_insert. + * If key is already present data pointer in that entry is updated. + * + * @param table: hash table. + * @param hash: hash value. User calculates the hash. + * @param entry: identifies the entry. + * If key already present, this entry->key is deleted immediately. + * But entry->data is set to NULL before deletion, and put into + * the existing entry. The data is then freed. + * @param data: the data. + * @param cb_override: if not NULL overrides the cb_arg for deletfunc. + */ +void slabhash_insert(struct slabhash* table, hashvalue_t hash, + struct lruhash_entry* entry, void* data, void* cb_override); + +/** + * Lookup an entry in the hashtable. Uses lruhash_lookup. + * At the end of the function you hold a (read/write)lock on the entry. + * The LRU is updated for the entry (if found). + * @param table: hash table. + * @param hash: hash of key. + * @param key: what to look for, compared against entries in overflow chain. + * the hash value must be set, and must work with compare function. + * @param wr: set to true if you desire a writelock on the entry. + * with a writelock you can update the data part. + * @return: pointer to the entry or NULL. The entry is locked. + * The user must unlock the entry when done. + */ +struct lruhash_entry* slabhash_lookup(struct slabhash* table, + hashvalue_t hash, void* key, int wr); + +/** + * Remove entry from hashtable. Does nothing if not found in hashtable. + * Delfunc is called for the entry. Uses lruhash_remove. + * @param table: hash table. + * @param hash: hash of key. + * @param key: what to look for. + */ +void slabhash_remove(struct slabhash* table, hashvalue_t hash, void* key); + +/** + * Output debug info to the log as to state of the hash table. + * @param table: hash table. + * @param id: string printed with table to identify the hash table. + * @param extended: set to true to print statistics on overflow bin lengths. + */ +void slabhash_status(struct slabhash* table, const char* id, int extended); + +/** + * Retrieve slab hash total size. + * @param table: hash table. + * @return size configured as max. + */ +size_t slabhash_get_size(struct slabhash* table); + +/** + * Retrieve slab hash current memory use. + * @param table: hash table. + * @return memory in use. + */ +size_t slabhash_get_mem(struct slabhash* table); + +/** + * Get lruhash table for a given hash value + * @param table: slabbed hash table. + * @param hash: hash value. + * @return the lru hash table. + */ +struct lruhash* slabhash_gettable(struct slabhash* table, hashvalue_t hash); + +/** + * Set markdel function + * @param table: slabbed hash table. + * @param md: markdel function ptr. + */ +void slabhash_setmarkdel(struct slabhash* table, lruhash_markdelfunc_t md); + +/** + * Traverse a slabhash. + * @param table: slabbed hash table. + * @param wr: if true, writelock is obtained, otherwise readlock. + * @param func: function to call for every element. + * @param arg: user argument to function. + */ +void slabhash_traverse(struct slabhash* table, int wr, + void (*func)(struct lruhash_entry*, void*), void* arg); + +/* + * Count entries in slabhash. + * @param table: slabbed hash table; + * @return the number of items + */ +size_t count_slabhash_entries(struct slabhash* table); + +/* --- test representation --- */ +/** test structure contains test key */ +struct slabhash_testkey { + /** the key id */ + int id; + /** the entry */ + struct lruhash_entry entry; +}; +/** test structure contains test data */ +struct slabhash_testdata { + /** data value */ + int data; +}; + +/** test sizefunc for lruhash */ +size_t test_slabhash_sizefunc(void*, void*); +/** test comparefunc for lruhash */ +int test_slabhash_compfunc(void*, void*); +/** test delkey for lruhash */ +void test_slabhash_delkey(void*, void*); +/** test deldata for lruhash */ +void test_slabhash_deldata(void*, void*); +/* --- end test representation --- */ + +#endif /* UTIL_STORAGE_SLABHASH_H */ diff --git a/external/unbound/util/timehist.c b/external/unbound/util/timehist.c new file mode 100644 index 000000000..dbf5b9841 --- /dev/null +++ b/external/unbound/util/timehist.c @@ -0,0 +1,247 @@ +/* + * util/timehist.c - make histogram of time values. + * + * Copyright (c) 2007, NLnet Labs. All rights reserved. + * + * This software is open source. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * Neither the name of the NLNET LABS nor the names of its contributors may + * be used to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/** + * \file + * + * This file contains functions to make a histogram of time values. + */ +#include "config.h" +#ifdef HAVE_TIME_H +#include <time.h> +#endif +#include <sys/time.h> +#include <sys/types.h> +#include "util/timehist.h" +#include "util/log.h" + +/** special timestwo operation for time values in histogram setup */ +static void +timestwo(struct timeval* v) +{ +#ifndef S_SPLINT_S + if(v->tv_sec == 0 && v->tv_usec == 0) { + v->tv_usec = 1; + return; + } + v->tv_sec *= 2; + v->tv_usec *= 2; + if(v->tv_usec == 1024*1024) { + /* nice values and easy to compute */ + v->tv_sec = 1; + v->tv_usec = 0; + } +#endif +} + +/** do setup exponentially */ +static void +dosetup(struct timehist* hist) +{ + struct timeval last; + size_t i; + memset(&last, 0, sizeof(last)); + for(i=0; i<hist->num; i++) { + hist->buckets[i].lower = last; + timestwo(&last); + hist->buckets[i].upper = last; + hist->buckets[i].count = 0; + } +} + +struct timehist* timehist_setup(void) +{ + struct timehist* hist = (struct timehist*)calloc(1, + sizeof(struct timehist)); + if(!hist) + return NULL; + hist->num = NUM_BUCKETS_HIST; + hist->buckets = (struct th_buck*)calloc(hist->num, + sizeof(struct th_buck)); + if(!hist->buckets) { + free(hist); + return NULL; + } + /* setup the buckets */ + dosetup(hist); + return hist; +} + +void timehist_delete(struct timehist* hist) +{ + if(!hist) + return; + free(hist->buckets); + free(hist); +} + +void timehist_clear(struct timehist* hist) +{ + size_t i; + for(i=0; i<hist->num; i++) + hist->buckets[i].count = 0; +} + +/** histogram compare of time values */ +static int +timeval_smaller(const struct timeval* x, const struct timeval* y) +{ +#ifndef S_SPLINT_S + if(x->tv_sec < y->tv_sec) + return 1; + else if(x->tv_sec == y->tv_sec) { + if(x->tv_usec <= y->tv_usec) + return 1; + else return 0; + } + else return 0; +#endif +} + + +void timehist_insert(struct timehist* hist, struct timeval* tv) +{ + size_t i; + for(i=0; i<hist->num; i++) { + if(timeval_smaller(tv, &hist->buckets[i].upper)) { + hist->buckets[i].count++; + return; + } + } + /* dump in last bucket */ + hist->buckets[hist->num-1].count++; +} + +void timehist_print(struct timehist* hist) +{ +#ifndef S_SPLINT_S + size_t i; + for(i=0; i<hist->num; i++) { + if(hist->buckets[i].count != 0) { + printf("%4d.%6.6d %4d.%6.6d %u\n", + (int)hist->buckets[i].lower.tv_sec, + (int)hist->buckets[i].lower.tv_usec, + (int)hist->buckets[i].upper.tv_sec, + (int)hist->buckets[i].upper.tv_usec, + (unsigned)hist->buckets[i].count); + } + } +#endif +} + +void timehist_log(struct timehist* hist, const char* name) +{ +#ifndef S_SPLINT_S + size_t i; + log_info("[25%%]=%g median[50%%]=%g [75%%]=%g", + timehist_quartile(hist, 0.25), + timehist_quartile(hist, 0.50), + timehist_quartile(hist, 0.75)); + /* 0000.000000 0000.000000 0 */ + log_info("lower(secs) upper(secs) %s", name); + for(i=0; i<hist->num; i++) { + if(hist->buckets[i].count != 0) { + log_info("%4d.%6.6d %4d.%6.6d %u", + (int)hist->buckets[i].lower.tv_sec, + (int)hist->buckets[i].lower.tv_usec, + (int)hist->buckets[i].upper.tv_sec, + (int)hist->buckets[i].upper.tv_usec, + (unsigned)hist->buckets[i].count); + } + } +#endif +} + +/** total number in histogram */ +static size_t +timehist_count(struct timehist* hist) +{ + size_t i, res = 0; + for(i=0; i<hist->num; i++) + res += hist->buckets[i].count; + return res; +} + +double +timehist_quartile(struct timehist* hist, double q) +{ + double lookfor, passed, res; + double low = 0, up = 0; + size_t i; + if(!hist || hist->num == 0) + return 0.; + /* look for i'th element, interpolated */ + lookfor = (double)timehist_count(hist); + if(lookfor < 4) + return 0.; /* not enough elements for a good estimate */ + lookfor *= q; + passed = 0; + i = 0; + while(i+1 < hist->num && + passed+(double)hist->buckets[i].count < lookfor) { + passed += (double)hist->buckets[i++].count; + } + /* got the right bucket */ +#ifndef S_SPLINT_S + low = (double)hist->buckets[i].lower.tv_sec + + (double)hist->buckets[i].lower.tv_usec/1000000.; + up = (double)hist->buckets[i].upper.tv_sec + + (double)hist->buckets[i].upper.tv_usec/1000000.; +#endif + res = (lookfor - passed)*(up-low)/((double)hist->buckets[i].count); + return low+res; +} + +void +timehist_export(struct timehist* hist, size_t* array, size_t sz) +{ + size_t i; + if(!hist) return; + if(sz > hist->num) + sz = hist->num; + for(i=0; i<sz; i++) + array[i] = hist->buckets[i].count; +} + +void +timehist_import(struct timehist* hist, size_t* array, size_t sz) +{ + size_t i; + if(!hist) return; + if(sz > hist->num) + sz = hist->num; + for(i=0; i<sz; i++) + hist->buckets[i].count = array[i]; +} diff --git a/external/unbound/util/timehist.h b/external/unbound/util/timehist.h new file mode 100644 index 000000000..5c65048b9 --- /dev/null +++ b/external/unbound/util/timehist.h @@ -0,0 +1,134 @@ +/* + * util/timehist.h - make histogram of time values. + * + * Copyright (c) 2007, NLnet Labs. All rights reserved. + * + * This software is open source. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * Neither the name of the NLNET LABS nor the names of its contributors may + * be used to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/** + * \file + * + * This file contains functions to make a histogram of time values. + */ + +#ifndef UTIL_TIMEHIST_H +#define UTIL_TIMEHIST_H + +/** Number of buckets in a histogram */ +#define NUM_BUCKETS_HIST 40 + +/** + * Bucket of time history information + */ +struct th_buck { + /** lower bound */ + struct timeval lower; + /** upper bound */ + struct timeval upper; + /** number of items */ + size_t count; +}; + +/** + * Keep histogram of time values. + */ +struct timehist { + /** number of buckets */ + size_t num; + /** bucket array */ + struct th_buck* buckets; +}; + +/** + * Setup a histogram, default + * @return histogram or NULL on malloc failure. + */ +struct timehist* timehist_setup(void); + +/** + * Delete histogram + * @param hist: to delete + */ +void timehist_delete(struct timehist* hist); + +/** + * Clear histogram + * @param hist: to clear all data from + */ +void timehist_clear(struct timehist* hist); + +/** + * Add time value to histogram. + * @param hist: histogram + * @param tv: time value + */ +void timehist_insert(struct timehist* hist, struct timeval* tv); + +/** + * Find time value for given quartile, such as 0.25, 0.50, 0.75. + * The looks up the value for the i-th element in the sorted list of time + * values, as approximated using the histogram. + * @param hist: histogram. Interpolated information is used from it. + * @param q: quartile, 0.50 results in the median. Must be >0 and <1. + * @return: the time in seconds for that percentage. + */ +double timehist_quartile(struct timehist* hist, double q); + +/** + * Printout histogram + * @param hist: histogram + */ +void timehist_print(struct timehist* hist); + +/** + * Log histogram, print it to the logfile. + * @param hist: histogram + * @param name: the name of the value column + */ +void timehist_log(struct timehist* hist, const char* name); + +/** + * Export histogram to an array. + * @param hist: histogram + * @param array: the array to export to. + * @param sz: number of items in array. + */ +void timehist_export(struct timehist* hist, size_t* array, size_t sz); + +/** + * Import histogram from an array. + * @param hist: histogram + * @param array: the array to import from. + * @param sz: number of items in array. + */ +void timehist_import(struct timehist* hist, size_t* array, size_t sz); + +#endif /* UTIL_TIMEHIST_H */ diff --git a/external/unbound/util/tube.c b/external/unbound/util/tube.c new file mode 100644 index 000000000..2106a078c --- /dev/null +++ b/external/unbound/util/tube.c @@ -0,0 +1,727 @@ +/* + * util/tube.c - pipe service + * + * Copyright (c) 2008, NLnet Labs. All rights reserved. + * + * This software is open source. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * Neither the name of the NLNET LABS nor the names of its contributors may + * be used to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/** + * \file + * + * This file contains pipe service functions. + */ +#include "config.h" +#include "util/tube.h" +#include "util/log.h" +#include "util/net_help.h" +#include "util/netevent.h" +#include "util/fptr_wlist.h" + +#ifndef USE_WINSOCK +/* on unix */ + +#ifndef HAVE_SOCKETPAIR +/** no socketpair() available, like on Minix 3.1.7, use pipe */ +#define socketpair(f, t, p, sv) pipe(sv) +#endif /* HAVE_SOCKETPAIR */ + +struct tube* tube_create(void) +{ + struct tube* tube = (struct tube*)calloc(1, sizeof(*tube)); + int sv[2]; + if(!tube) { + int err = errno; + log_err("tube_create: out of memory"); + errno = err; + return NULL; + } + tube->sr = -1; + tube->sw = -1; + if(socketpair(AF_UNIX, SOCK_STREAM, 0, sv) == -1) { + int err = errno; + log_err("socketpair: %s", strerror(errno)); + free(tube); + errno = err; + return NULL; + } + tube->sr = sv[0]; + tube->sw = sv[1]; + if(!fd_set_nonblock(tube->sr) || !fd_set_nonblock(tube->sw)) { + int err = errno; + log_err("tube: cannot set nonblocking"); + tube_delete(tube); + errno = err; + return NULL; + } + return tube; +} + +void tube_delete(struct tube* tube) +{ + if(!tube) return; + tube_remove_bg_listen(tube); + tube_remove_bg_write(tube); + /* close fds after deleting commpoints, to be sure. + * Also epoll does not like closing fd before event_del */ + tube_close_read(tube); + tube_close_write(tube); + free(tube); +} + +void tube_close_read(struct tube* tube) +{ + if(tube->sr != -1) { + close(tube->sr); + tube->sr = -1; + } +} + +void tube_close_write(struct tube* tube) +{ + if(tube->sw != -1) { + close(tube->sw); + tube->sw = -1; + } +} + +void tube_remove_bg_listen(struct tube* tube) +{ + if(tube->listen_com) { + comm_point_delete(tube->listen_com); + tube->listen_com = NULL; + } + if(tube->cmd_msg) { + free(tube->cmd_msg); + tube->cmd_msg = NULL; + } +} + +void tube_remove_bg_write(struct tube* tube) +{ + if(tube->res_com) { + comm_point_delete(tube->res_com); + tube->res_com = NULL; + } + if(tube->res_list) { + struct tube_res_list* np, *p = tube->res_list; + tube->res_list = NULL; + tube->res_last = NULL; + while(p) { + np = p->next; + free(p->buf); + free(p); + p = np; + } + } +} + +int +tube_handle_listen(struct comm_point* c, void* arg, int error, + struct comm_reply* ATTR_UNUSED(reply_info)) +{ + struct tube* tube = (struct tube*)arg; + ssize_t r; + if(error != NETEVENT_NOERROR) { + fptr_ok(fptr_whitelist_tube_listen(tube->listen_cb)); + (*tube->listen_cb)(tube, NULL, 0, error, tube->listen_arg); + return 0; + } + + if(tube->cmd_read < sizeof(tube->cmd_len)) { + /* complete reading the length of control msg */ + r = read(c->fd, ((uint8_t*)&tube->cmd_len) + tube->cmd_read, + sizeof(tube->cmd_len) - tube->cmd_read); + if(r==0) { + /* error has happened or */ + /* parent closed pipe, must have exited somehow */ + fptr_ok(fptr_whitelist_tube_listen(tube->listen_cb)); + (*tube->listen_cb)(tube, NULL, 0, NETEVENT_CLOSED, + tube->listen_arg); + return 0; + } + if(r==-1) { + if(errno != EAGAIN && errno != EINTR) { + log_err("rpipe error: %s", strerror(errno)); + } + /* nothing to read now, try later */ + return 0; + } + tube->cmd_read += r; + if(tube->cmd_read < sizeof(tube->cmd_len)) { + /* not complete, try later */ + return 0; + } + tube->cmd_msg = (uint8_t*)calloc(1, tube->cmd_len); + if(!tube->cmd_msg) { + log_err("malloc failure"); + tube->cmd_read = 0; + return 0; + } + } + /* cmd_len has been read, read remainder */ + r = read(c->fd, tube->cmd_msg+tube->cmd_read-sizeof(tube->cmd_len), + tube->cmd_len - (tube->cmd_read - sizeof(tube->cmd_len))); + if(r==0) { + /* error has happened or */ + /* parent closed pipe, must have exited somehow */ + fptr_ok(fptr_whitelist_tube_listen(tube->listen_cb)); + (*tube->listen_cb)(tube, NULL, 0, NETEVENT_CLOSED, + tube->listen_arg); + return 0; + } + if(r==-1) { + /* nothing to read now, try later */ + if(errno != EAGAIN && errno != EINTR) { + log_err("rpipe error: %s", strerror(errno)); + } + return 0; + } + tube->cmd_read += r; + if(tube->cmd_read < sizeof(tube->cmd_len) + tube->cmd_len) { + /* not complete, try later */ + return 0; + } + tube->cmd_read = 0; + + fptr_ok(fptr_whitelist_tube_listen(tube->listen_cb)); + (*tube->listen_cb)(tube, tube->cmd_msg, tube->cmd_len, + NETEVENT_NOERROR, tube->listen_arg); + /* also frees the buf */ + tube->cmd_msg = NULL; + return 0; +} + +int +tube_handle_write(struct comm_point* c, void* arg, int error, + struct comm_reply* ATTR_UNUSED(reply_info)) +{ + struct tube* tube = (struct tube*)arg; + struct tube_res_list* item = tube->res_list; + ssize_t r; + if(error != NETEVENT_NOERROR) { + log_err("tube_handle_write net error %d", error); + return 0; + } + + if(!item) { + comm_point_stop_listening(c); + return 0; + } + + if(tube->res_write < sizeof(item->len)) { + r = write(c->fd, ((uint8_t*)&item->len) + tube->res_write, + sizeof(item->len) - tube->res_write); + if(r == -1) { + if(errno != EAGAIN && errno != EINTR) { + log_err("wpipe error: %s", strerror(errno)); + } + return 0; /* try again later */ + } + if(r == 0) { + /* error on pipe, must have exited somehow */ + /* cannot signal this to pipe user */ + return 0; + } + tube->res_write += r; + if(tube->res_write < sizeof(item->len)) + return 0; + } + r = write(c->fd, item->buf + tube->res_write - sizeof(item->len), + item->len - (tube->res_write - sizeof(item->len))); + if(r == -1) { + if(errno != EAGAIN && errno != EINTR) { + log_err("wpipe error: %s", strerror(errno)); + } + return 0; /* try again later */ + } + if(r == 0) { + /* error on pipe, must have exited somehow */ + /* cannot signal this to pipe user */ + return 0; + } + tube->res_write += r; + if(tube->res_write < sizeof(item->len) + item->len) + return 0; + /* done this result, remove it */ + free(item->buf); + item->buf = NULL; + tube->res_list = tube->res_list->next; + free(item); + if(!tube->res_list) { + tube->res_last = NULL; + comm_point_stop_listening(c); + } + tube->res_write = 0; + return 0; +} + +int tube_write_msg(struct tube* tube, uint8_t* buf, uint32_t len, + int nonblock) +{ + ssize_t r, d; + int fd = tube->sw; + + /* test */ + if(nonblock) { + r = write(fd, &len, sizeof(len)); + if(r == -1) { + if(errno==EINTR || errno==EAGAIN) + return -1; + log_err("tube msg write failed: %s", strerror(errno)); + return -1; /* can still continue, perhaps */ + } + } else r = 0; + if(!fd_set_block(fd)) + return 0; + /* write remainder */ + d = r; + while(d != (ssize_t)sizeof(len)) { + if((r=write(fd, ((char*)&len)+d, sizeof(len)-d)) == -1) { + log_err("tube msg write failed: %s", strerror(errno)); + (void)fd_set_nonblock(fd); + return 0; + } + d += r; + } + d = 0; + while(d != (ssize_t)len) { + if((r=write(fd, buf+d, len-d)) == -1) { + log_err("tube msg write failed: %s", strerror(errno)); + (void)fd_set_nonblock(fd); + return 0; + } + d += r; + } + if(!fd_set_nonblock(fd)) + return 0; + return 1; +} + +int tube_read_msg(struct tube* tube, uint8_t** buf, uint32_t* len, + int nonblock) +{ + ssize_t r, d; + int fd = tube->sr; + + /* test */ + *len = 0; + if(nonblock) { + r = read(fd, len, sizeof(*len)); + if(r == -1) { + if(errno==EINTR || errno==EAGAIN) + return -1; + log_err("tube msg read failed: %s", strerror(errno)); + return -1; /* we can still continue, perhaps */ + } + if(r == 0) /* EOF */ + return 0; + } else r = 0; + if(!fd_set_block(fd)) + return 0; + /* read remainder */ + d = r; + while(d != (ssize_t)sizeof(*len)) { + if((r=read(fd, ((char*)len)+d, sizeof(*len)-d)) == -1) { + log_err("tube msg read failed: %s", strerror(errno)); + (void)fd_set_nonblock(fd); + return 0; + } + if(r == 0) /* EOF */ { + (void)fd_set_nonblock(fd); + return 0; + } + d += r; + } + log_assert(*len < 65536*2); + *buf = (uint8_t*)malloc(*len); + if(!*buf) { + log_err("tube read out of memory"); + (void)fd_set_nonblock(fd); + return 0; + } + d = 0; + while(d < (ssize_t)*len) { + if((r=read(fd, (*buf)+d, (size_t)((ssize_t)*len)-d)) == -1) { + log_err("tube msg read failed: %s", strerror(errno)); + (void)fd_set_nonblock(fd); + free(*buf); + return 0; + } + if(r == 0) { /* EOF */ + (void)fd_set_nonblock(fd); + free(*buf); + return 0; + } + d += r; + } + if(!fd_set_nonblock(fd)) { + free(*buf); + return 0; + } + return 1; +} + +/** perform a select() on the fd */ +static int +pollit(int fd, struct timeval* t) +{ + fd_set r; +#ifndef S_SPLINT_S + FD_ZERO(&r); + FD_SET(FD_SET_T fd, &r); +#endif + if(select(fd+1, &r, NULL, NULL, t) == -1) { + return 0; + } + errno = 0; + return (int)(FD_ISSET(fd, &r)); +} + +int tube_poll(struct tube* tube) +{ + struct timeval t; + memset(&t, 0, sizeof(t)); + return pollit(tube->sr, &t); +} + +int tube_wait(struct tube* tube) +{ + return pollit(tube->sr, NULL); +} + +int tube_read_fd(struct tube* tube) +{ + return tube->sr; +} + +int tube_setup_bg_listen(struct tube* tube, struct comm_base* base, + tube_callback_t* cb, void* arg) +{ + tube->listen_cb = cb; + tube->listen_arg = arg; + if(!(tube->listen_com = comm_point_create_raw(base, tube->sr, + 0, tube_handle_listen, tube))) { + int err = errno; + log_err("tube_setup_bg_l: commpoint creation failed"); + errno = err; + return 0; + } + return 1; +} + +int tube_setup_bg_write(struct tube* tube, struct comm_base* base) +{ + if(!(tube->res_com = comm_point_create_raw(base, tube->sw, + 1, tube_handle_write, tube))) { + int err = errno; + log_err("tube_setup_bg_w: commpoint creation failed"); + errno = err; + return 0; + } + return 1; +} + +int tube_queue_item(struct tube* tube, uint8_t* msg, size_t len) +{ + struct tube_res_list* item = + (struct tube_res_list*)malloc(sizeof(*item)); + if(!item) { + free(msg); + log_err("out of memory for async answer"); + return 0; + } + item->buf = msg; + item->len = len; + item->next = NULL; + /* add at back of list, since the first one may be partially written */ + if(tube->res_last) + tube->res_last->next = item; + else tube->res_list = item; + tube->res_last = item; + if(tube->res_list == tube->res_last) { + /* first added item, start the write process */ + comm_point_start_listening(tube->res_com, -1, -1); + } + return 1; +} + +void tube_handle_signal(int ATTR_UNUSED(fd), short ATTR_UNUSED(events), + void* ATTR_UNUSED(arg)) +{ + log_assert(0); +} + +#else /* USE_WINSOCK */ +/* on windows */ + + +struct tube* tube_create(void) +{ + /* windows does not have forks like unix, so we only support + * threads on windows. And thus the pipe need only connect + * threads. We use a mutex and a list of datagrams. */ + struct tube* tube = (struct tube*)calloc(1, sizeof(*tube)); + if(!tube) { + int err = errno; + log_err("tube_create: out of memory"); + errno = err; + return NULL; + } + tube->event = WSACreateEvent(); + if(tube->event == WSA_INVALID_EVENT) { + free(tube); + log_err("WSACreateEvent: %s", wsa_strerror(WSAGetLastError())); + } + if(!WSAResetEvent(tube->event)) { + log_err("WSAResetEvent: %s", wsa_strerror(WSAGetLastError())); + } + lock_basic_init(&tube->res_lock); + verbose(VERB_ALGO, "tube created"); + return tube; +} + +void tube_delete(struct tube* tube) +{ + if(!tube) return; + tube_remove_bg_listen(tube); + tube_remove_bg_write(tube); + tube_close_read(tube); + tube_close_write(tube); + if(!WSACloseEvent(tube->event)) + log_err("WSACloseEvent: %s", wsa_strerror(WSAGetLastError())); + lock_basic_destroy(&tube->res_lock); + verbose(VERB_ALGO, "tube deleted"); + free(tube); +} + +void tube_close_read(struct tube* ATTR_UNUSED(tube)) +{ + verbose(VERB_ALGO, "tube close_read"); +} + +void tube_close_write(struct tube* ATTR_UNUSED(tube)) +{ + verbose(VERB_ALGO, "tube close_write"); + /* wake up waiting reader with an empty queue */ + if(!WSASetEvent(tube->event)) { + log_err("WSASetEvent: %s", wsa_strerror(WSAGetLastError())); + } +} + +void tube_remove_bg_listen(struct tube* tube) +{ + verbose(VERB_ALGO, "tube remove_bg_listen"); + winsock_unregister_wsaevent(&tube->ev_listen); +} + +void tube_remove_bg_write(struct tube* tube) +{ + verbose(VERB_ALGO, "tube remove_bg_write"); + if(tube->res_list) { + struct tube_res_list* np, *p = tube->res_list; + tube->res_list = NULL; + tube->res_last = NULL; + while(p) { + np = p->next; + free(p->buf); + free(p); + p = np; + } + } +} + +int tube_write_msg(struct tube* tube, uint8_t* buf, uint32_t len, + int ATTR_UNUSED(nonblock)) +{ + uint8_t* a; + verbose(VERB_ALGO, "tube write_msg len %d", (int)len); + a = (uint8_t*)memdup(buf, len); + if(!a) { + log_err("out of memory in tube_write_msg"); + return 0; + } + /* always nonblocking, this pipe cannot get full */ + return tube_queue_item(tube, a, len); +} + +int tube_read_msg(struct tube* tube, uint8_t** buf, uint32_t* len, + int nonblock) +{ + struct tube_res_list* item = NULL; + verbose(VERB_ALGO, "tube read_msg %s", nonblock?"nonblock":"blocking"); + *buf = NULL; + if(!tube_poll(tube)) { + verbose(VERB_ALGO, "tube read_msg nodata"); + /* nothing ready right now, wait if we want to */ + if(nonblock) + return -1; /* would block waiting for items */ + if(!tube_wait(tube)) + return 0; + } + lock_basic_lock(&tube->res_lock); + if(tube->res_list) { + item = tube->res_list; + tube->res_list = item->next; + if(tube->res_last == item) { + /* the list is now empty */ + tube->res_last = NULL; + verbose(VERB_ALGO, "tube read_msg lastdata"); + if(!WSAResetEvent(tube->event)) { + log_err("WSAResetEvent: %s", + wsa_strerror(WSAGetLastError())); + } + } + } + lock_basic_unlock(&tube->res_lock); + if(!item) + return 0; /* would block waiting for items */ + *buf = item->buf; + *len = item->len; + free(item); + verbose(VERB_ALGO, "tube read_msg len %d", (int)*len); + return 1; +} + +int tube_poll(struct tube* tube) +{ + struct tube_res_list* item = NULL; + lock_basic_lock(&tube->res_lock); + item = tube->res_list; + lock_basic_unlock(&tube->res_lock); + if(item) + return 1; + return 0; +} + +int tube_wait(struct tube* tube) +{ + /* block on eventhandle */ + DWORD res = WSAWaitForMultipleEvents( + 1 /* one event in array */, + &tube->event /* the event to wait for, our pipe signal */, + 0 /* wait for all events is false */, + WSA_INFINITE /* wait, no timeout */, + 0 /* we are not alertable for IO completion routines */ + ); + if(res == WSA_WAIT_TIMEOUT) { + return 0; + } + if(res == WSA_WAIT_IO_COMPLETION) { + /* a bit unexpected, since we were not alertable */ + return 0; + } + return 1; +} + +int tube_read_fd(struct tube* ATTR_UNUSED(tube)) +{ + /* nothing sensible on Windows */ + return -1; +} + +int +tube_handle_listen(struct comm_point* ATTR_UNUSED(c), void* ATTR_UNUSED(arg), + int ATTR_UNUSED(error), struct comm_reply* ATTR_UNUSED(reply_info)) +{ + log_assert(0); + return 0; +} + +int +tube_handle_write(struct comm_point* ATTR_UNUSED(c), void* ATTR_UNUSED(arg), + int ATTR_UNUSED(error), struct comm_reply* ATTR_UNUSED(reply_info)) +{ + log_assert(0); + return 0; +} + +int tube_setup_bg_listen(struct tube* tube, struct comm_base* base, + tube_callback_t* cb, void* arg) +{ + tube->listen_cb = cb; + tube->listen_arg = arg; + if(!comm_base_internal(base)) + return 1; /* ignore when no comm base - testing */ + return winsock_register_wsaevent(comm_base_internal(base), + &tube->ev_listen, tube->event, &tube_handle_signal, tube); +} + +int tube_setup_bg_write(struct tube* ATTR_UNUSED(tube), + struct comm_base* ATTR_UNUSED(base)) +{ + /* the queue item routine performs the signaling */ + return 1; +} + +int tube_queue_item(struct tube* tube, uint8_t* msg, size_t len) +{ + struct tube_res_list* item = + (struct tube_res_list*)malloc(sizeof(*item)); + verbose(VERB_ALGO, "tube queue_item len %d", (int)len); + if(!item) { + free(msg); + log_err("out of memory for async answer"); + return 0; + } + item->buf = msg; + item->len = len; + item->next = NULL; + lock_basic_lock(&tube->res_lock); + /* add at back of list, since the first one may be partially written */ + if(tube->res_last) + tube->res_last->next = item; + else tube->res_list = item; + tube->res_last = item; + /* signal the eventhandle */ + if(!WSASetEvent(tube->event)) { + log_err("WSASetEvent: %s", wsa_strerror(WSAGetLastError())); + } + lock_basic_unlock(&tube->res_lock); + return 1; +} + +void tube_handle_signal(int ATTR_UNUSED(fd), short ATTR_UNUSED(events), + void* arg) +{ + struct tube* tube = (struct tube*)arg; + uint8_t* buf; + uint32_t len = 0; + verbose(VERB_ALGO, "tube handle_signal"); + while(tube_poll(tube)) { + if(tube_read_msg(tube, &buf, &len, 1)) { + fptr_ok(fptr_whitelist_tube_listen(tube->listen_cb)); + (*tube->listen_cb)(tube, buf, len, NETEVENT_NOERROR, + tube->listen_arg); + } + } +} + +#endif /* USE_WINSOCK */ diff --git a/external/unbound/util/tube.h b/external/unbound/util/tube.h new file mode 100644 index 000000000..9ec50af38 --- /dev/null +++ b/external/unbound/util/tube.h @@ -0,0 +1,273 @@ +/* + * util/tube.h - pipe service + * + * Copyright (c) 2008, NLnet Labs. All rights reserved. + * + * This software is open source. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * Neither the name of the NLNET LABS nor the names of its contributors may + * be used to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/** + * \file + * + * This file contains pipe service functions. + */ + +#ifndef UTIL_TUBE_H +#define UTIL_TUBE_H +struct comm_reply; +struct comm_point; +struct comm_base; +struct tube; +struct tube_res_list; +#ifdef USE_WINSOCK +#include "util/locks.h" +#include "util/winsock_event.h" +#endif + +/** + * Callback from pipe listen function + * void mycallback(tube, msg, len, error, user_argument); + * if error is true (NETEVENT_*), msg is probably NULL. + */ +typedef void tube_callback_t(struct tube*, uint8_t*, size_t, int, void*); + +/** + * A pipe + */ +struct tube { +#ifndef USE_WINSOCK + /** pipe end to read from */ + int sr; + /** pipe end to write on */ + int sw; + + /** listen commpoint */ + struct comm_point* listen_com; + /** listen callback */ + tube_callback_t* listen_cb; + /** listen callback user arg */ + void* listen_arg; + /** are we currently reading a command, 0 if not, else bytecount */ + size_t cmd_read; + /** size of current read command, may be partially read */ + uint32_t cmd_len; + /** the current read command content, malloced, can be partially read*/ + uint8_t* cmd_msg; + + /** background write queue, commpoint to write results back */ + struct comm_point* res_com; + /** are we curently writing a result, 0 if not, else bytecount into + * the res_list first entry. */ + size_t res_write; + /** list of outstanding results to be written back */ + struct tube_res_list* res_list; + /** last in list */ + struct tube_res_list* res_last; + +#else /* USE_WINSOCK */ + /** listen callback */ + tube_callback_t* listen_cb; + /** listen callback user arg */ + void* listen_arg; + /** the windows sockets event (signaled if items in pipe) */ + WSAEVENT event; + /** winsock event storage when registered with event base */ + struct event ev_listen; + + /** lock on the list of outstanding items */ + lock_basic_t res_lock; + /** list of outstanding results on pipe */ + struct tube_res_list* res_list; + /** last in list */ + struct tube_res_list* res_last; +#endif /* USE_WINSOCK */ +}; + +/** + * List of results (arbitrary command serializations) to write back + */ +struct tube_res_list { + /** next in list */ + struct tube_res_list* next; + /** serialized buffer to write */ + uint8_t* buf; + /** length to write */ + uint32_t len; +}; + +/** + * Create a pipe + * @return: new tube struct or NULL on error. + */ +struct tube* tube_create(void); + +/** + * Delete and destroy a pipe + * @param tube: to delete + */ +void tube_delete(struct tube* tube); + +/** + * Write length bytes followed by message. + * @param tube: the tube to write on. + * If that tube is a pipe, its write fd is used as + * the socket to write on. Is nonblocking. + * Set to blocking by the function, + * and back to non-blocking at exit of function. + * @param buf: the message. + * @param len: length of message. + * @param nonblock: if set to true, the first write is nonblocking. + * If the first write fails the function returns -1. + * If set false, the first write is blocking. + * @return: all remainder writes are nonblocking. + * return 0 on error, in that case blocking/nonblocking of socket is + * unknown. + * return 1 if all OK. + */ +int tube_write_msg(struct tube* tube, uint8_t* buf, uint32_t len, + int nonblock); + +/** + * Read length bytes followed by message. + * @param tube: The tube to read on. + * If that tube is a pipe, its read fd is used as + * the socket to read on. Is nonblocking. + * Set to blocking by the function, + * and back to non-blocking at exit of function. + * @param buf: the message, malloced. + * @param len: length of message, returned. + * @param nonblock: if set to true, the first read is nonblocking. + * If the first read fails the function returns -1. + * If set false, the first read is blocking. + * @return: all remainder reads are nonblocking. + * return 0 on error, in that case blocking/nonblocking of socket is + * unknown. On EOF 0 is returned. + * return 1 if all OK. + */ +int tube_read_msg(struct tube* tube, uint8_t** buf, uint32_t* len, + int nonblock); + +/** + * Close read part of the pipe. + * The tube can no longer be read from. + * @param tube: tube to operate on. + */ +void tube_close_read(struct tube* tube); + +/** + * Close write part of the pipe. + * The tube can no longer be written to. + * @param tube: tube to operate on. + */ +void tube_close_write(struct tube* tube); + +/** + * See if data is ready for reading on the tube without blocking. + * @param tube: tube to check for readable items + * @return true if readable items are present. False if not (or error). + * true on pipe_closed. + */ +int tube_poll(struct tube* tube); + +/** + * Wait for data to be ready for reading on the tube. is blocking. + * No timeout. + * @param tube: the tube to wait on. + * @return: if there was something to read (false on error). + * true on pipe_closed. + */ +int tube_wait(struct tube* tube); + +/** + * Get FD that is readable when new information arrives. + * @param tube + * @return file descriptor. + */ +int tube_read_fd(struct tube* tube); + +/** + * Start listening for information over the pipe. + * Background registration of a read listener, callback when read completed. + * Do not mix with tube_read_msg style direct reads from the pipe. + * @param tube: tube to listen on + * @param base: what base to register event callback. + * @param cb: callback routine. + * @param arg: user argument for callback routine. + * @return true if successful, false on error. + */ +int tube_setup_bg_listen(struct tube* tube, struct comm_base* base, + tube_callback_t* cb, void* arg); + +/** + * Remove bg listen setup from event base. + * @param tube: what tube to cleanup + */ +void tube_remove_bg_listen(struct tube* tube); + +/** + * Start background write handler for the pipe. + * Do not mix with tube_write_msg style direct writes to the pipe. + * @param tube: tube to write on + * @param base: what base to register event handler on. + * @return true if successful, false on error. + */ +int tube_setup_bg_write(struct tube* tube, struct comm_base* base); + +/** + * Remove bg write setup from event base. + * @param tube: what tube to cleanup + */ +void tube_remove_bg_write(struct tube* tube); + + +/** + * Append data item to background list of writes. + * Mallocs a list entry behind the scenes. + * Not locked behind the scenes, call from one thread or lock on outside. + * @param tube: what tube to queue on. + * @param msg: memory message to send. Is free()d after use. + * Put at the end of the to-send queue. + * @param len: length of item. + * @return 0 on failure (msg freed). + */ +int tube_queue_item(struct tube* tube, uint8_t* msg, size_t len); + +/** for fptr wlist, callback function */ +int tube_handle_listen(struct comm_point* c, void* arg, int error, + struct comm_reply* reply_info); + +/** for fptr wlist, callback function */ +int tube_handle_write(struct comm_point* c, void* arg, int error, + struct comm_reply* reply_info); + +/** for fptr wlist, winsock signal event callback function */ +void tube_handle_signal(int fd, short events, void* arg); + +#endif /* UTIL_TUBE_H */ diff --git a/external/unbound/util/winsock_event.c b/external/unbound/util/winsock_event.c new file mode 100644 index 000000000..38661a5e1 --- /dev/null +++ b/external/unbound/util/winsock_event.c @@ -0,0 +1,696 @@ +/* + * util/winsock_event.c - implementation of the unbound winsock event handler. + * + * Copyright (c) 2008, NLnet Labs. All rights reserved. + * + * This software is open source. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * Neither the name of the NLNET LABS nor the names of its contributors may + * be used to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ +/** + * \file + * Implementation of the unbound WinSock2 API event notification handler + * for the Windows port. + */ + +#include "config.h" +#ifdef USE_WINSOCK +#include <signal.h> +#ifdef HAVE_TIME_H +#include <time.h> +#endif +#include <sys/time.h> +#include "util/winsock_event.h" +#include "util/fptr_wlist.h" + +int mini_ev_cmp(const void* a, const void* b) +{ + const struct event *e = (const struct event*)a; + const struct event *f = (const struct event*)b; + if(e->ev_timeout.tv_sec < f->ev_timeout.tv_sec) + return -1; + if(e->ev_timeout.tv_sec > f->ev_timeout.tv_sec) + return 1; + if(e->ev_timeout.tv_usec < f->ev_timeout.tv_usec) + return -1; + if(e->ev_timeout.tv_usec > f->ev_timeout.tv_usec) + return 1; + if(e < f) + return -1; + if(e > f) + return 1; + return 0; +} + +/** set time */ +static int +settime(struct event_base* base) +{ + if(gettimeofday(base->time_tv, NULL) < 0) { + return -1; + } +#ifndef S_SPLINT_S + *base->time_secs = (time_t)base->time_tv->tv_sec; +#endif + return 0; +} + +#ifdef UNBOUND_DEBUG +/** + * Find a fd in the list of items. + * Note that not all items have a fd associated (those are -1). + * Signals are stored separately, and not searched. + * @param base: event base to look in. + * @param fd: what socket to look for. + * @return the index in the array, or -1 on failure. + */ +static int +find_fd(struct event_base* base, int fd) +{ + int i; + for(i=0; i<base->max; i++) { + if(base->items[i]->ev_fd == fd) + return i; + } + return -1; +} +#endif + +/** Find ptr in base array */ +static void +zero_waitfor(WSAEVENT waitfor[], WSAEVENT x) +{ + int i; + for(i=0; i<WSK_MAX_ITEMS; i++) { + if(waitfor[i] == x) + waitfor[i] = 0; + } +} + +void *event_init(time_t* time_secs, struct timeval* time_tv) +{ + struct event_base* base = (struct event_base*)malloc( + sizeof(struct event_base)); + if(!base) + return NULL; + memset(base, 0, sizeof(*base)); + base->time_secs = time_secs; + base->time_tv = time_tv; + if(settime(base) < 0) { + event_base_free(base); + return NULL; + } + base->items = (struct event**)calloc(WSK_MAX_ITEMS, + sizeof(struct event*)); + if(!base->items) { + event_base_free(base); + return NULL; + } + base->cap = WSK_MAX_ITEMS; + base->max = 0; + base->times = rbtree_create(mini_ev_cmp); + if(!base->times) { + event_base_free(base); + return NULL; + } + base->signals = (struct event**)calloc(MAX_SIG, sizeof(struct event*)); + if(!base->signals) { + event_base_free(base); + return NULL; + } + base->tcp_stickies = 0; + base->tcp_reinvigorated = 0; + verbose(VERB_CLIENT, "winsock_event inited"); + return base; +} + +const char *event_get_version(void) +{ + return "winsock-event-"PACKAGE_VERSION; +} + +const char *event_get_method(void) +{ + return "WSAWaitForMultipleEvents"; +} + +/** call timeouts handlers, and return how long to wait for next one or -1 */ +static void handle_timeouts(struct event_base* base, struct timeval* now, + struct timeval* wait) +{ + struct event* p; +#ifndef S_SPLINT_S + wait->tv_sec = (time_t)-1; +#endif + verbose(VERB_CLIENT, "winsock_event handle_timeouts"); + + while((rbnode_t*)(p = (struct event*)rbtree_first(base->times)) + !=RBTREE_NULL) { +#ifndef S_SPLINT_S + if(p->ev_timeout.tv_sec > now->tv_sec || + (p->ev_timeout.tv_sec==now->tv_sec && + p->ev_timeout.tv_usec > now->tv_usec)) { + /* there is a next larger timeout. wait for it */ + wait->tv_sec = p->ev_timeout.tv_sec - now->tv_sec; + if(now->tv_usec > p->ev_timeout.tv_usec) { + wait->tv_sec--; + wait->tv_usec = 1000000 - (now->tv_usec - + p->ev_timeout.tv_usec); + } else { + wait->tv_usec = p->ev_timeout.tv_usec + - now->tv_usec; + } + verbose(VERB_CLIENT, "winsock_event wait=" ARG_LL "d.%6.6d", + (long long)wait->tv_sec, (int)wait->tv_usec); + return; + } +#endif + /* event times out, remove it */ + (void)rbtree_delete(base->times, p); + p->ev_events &= ~EV_TIMEOUT; + fptr_ok(fptr_whitelist_event(p->ev_callback)); + (*p->ev_callback)(p->ev_fd, EV_TIMEOUT, p->ev_arg); + } + verbose(VERB_CLIENT, "winsock_event wait=(-1)"); +} + +/** handle is_signal events and see if signalled */ +static void handle_signal(struct event* ev) +{ + DWORD ret; + log_assert(ev->is_signal && ev->hEvent); + /* see if the event is signalled */ + ret = WSAWaitForMultipleEvents(1, &ev->hEvent, 0 /* any object */, + 0 /* return immediately */, 0 /* not alertable for IOcomple*/); + if(ret == WSA_WAIT_IO_COMPLETION || ret == WSA_WAIT_FAILED) { + log_err("WSAWaitForMultipleEvents(signal) failed: %s", + wsa_strerror(WSAGetLastError())); + return; + } + if(ret == WSA_WAIT_TIMEOUT) { + /* not signalled */ + return; + } + + /* reset the signal */ + if(!WSAResetEvent(ev->hEvent)) + log_err("WSAResetEvent failed: %s", + wsa_strerror(WSAGetLastError())); + /* do the callback (which may set the signal again) */ + fptr_ok(fptr_whitelist_event(ev->ev_callback)); + (*ev->ev_callback)(ev->ev_fd, ev->ev_events, ev->ev_arg); +} + +/** call select and callbacks for that */ +static int handle_select(struct event_base* base, struct timeval* wait) +{ + DWORD timeout = 0; /* in milliseconds */ + DWORD ret; + struct event* eventlist[WSK_MAX_ITEMS]; + WSANETWORKEVENTS netev; + int i, numwait = 0, startidx = 0, was_timeout = 0; + int newstickies = 0; + struct timeval nultm; + + verbose(VERB_CLIENT, "winsock_event handle_select"); + +#ifndef S_SPLINT_S + if(wait->tv_sec==(time_t)-1) + wait = NULL; + if(wait) + timeout = wait->tv_sec*1000 + wait->tv_usec/1000; + if(base->tcp_stickies) { + wait = &nultm; + nultm.tv_sec = 0; + nultm.tv_usec = 0; + timeout = 0; /* no waiting, we have sticky events */ + } +#endif + + /* prepare event array */ + for(i=0; i<base->max; i++) { + if(base->items[i]->ev_fd == -1 && !base->items[i]->is_signal) + continue; /* skip timer only events */ + eventlist[numwait] = base->items[i]; + base->waitfor[numwait++] = base->items[i]->hEvent; + if(numwait == WSK_MAX_ITEMS) + break; /* sanity check */ + } + log_assert(numwait <= WSA_MAXIMUM_WAIT_EVENTS); + verbose(VERB_CLIENT, "winsock_event bmax=%d numwait=%d wait=%x " + "timeout=%d", base->max, numwait, (int)wait, (int)timeout); + + /* do the wait */ + if(numwait == 0) { + /* WSAWaitFor.. doesn't like 0 event objects */ + if(wait) { + Sleep(timeout); + } + was_timeout = 1; + } else { + ret = WSAWaitForMultipleEvents(numwait, base->waitfor, + 0 /* do not wait for all, just one will do */, + wait?timeout:WSA_INFINITE, + 0); /* we are not alertable (IO completion events) */ + if(ret == WSA_WAIT_IO_COMPLETION) { + log_err("WSAWaitForMultipleEvents failed: WSA_WAIT_IO_COMPLETION"); + return -1; + } else if(ret == WSA_WAIT_FAILED) { + log_err("WSAWaitForMultipleEvents failed: %s", + wsa_strerror(WSAGetLastError())); + return -1; + } else if(ret == WSA_WAIT_TIMEOUT) { + was_timeout = 1; + } else + startidx = ret - WSA_WAIT_EVENT_0; + } + verbose(VERB_CLIENT, "winsock_event wake was_timeout=%d startidx=%d", + was_timeout, startidx); + + /* get new time after wait */ + if(settime(base) < 0) + return -1; + + /* callbacks */ + if(base->tcp_stickies) + startidx = 0; /* process all events, some are sticky */ + for(i=startidx; i<numwait; i++) + eventlist[i]->just_checked = 1; + + verbose(VERB_CLIENT, "winsock_event signals"); + for(i=startidx; i<numwait; i++) { + if(!base->waitfor[i]) + continue; /* was deleted */ + if(eventlist[i]->is_signal) { + eventlist[i]->just_checked = 0; + handle_signal(eventlist[i]); + } + } + /* early exit - do not process network, exit quickly */ + if(base->need_to_exit) + return 0; + + verbose(VERB_CLIENT, "winsock_event net"); + for(i=startidx; i<numwait; i++) { + short bits = 0; + /* eventlist[i] fired */ + /* see if eventlist[i] is still valid and just checked from + * WSAWaitForEvents */ + if(!base->waitfor[i]) + continue; /* was deleted */ + if(!eventlist[i]->just_checked) + continue; /* added by other callback */ + if(eventlist[i]->is_signal) + continue; /* not a network event at all */ + eventlist[i]->just_checked = 0; + + if(WSAEnumNetworkEvents(eventlist[i]->ev_fd, + base->waitfor[i], /* reset the event handle */ + /*NULL,*/ /* do not reset the event handle */ + &netev) != 0) { + log_err("WSAEnumNetworkEvents failed: %s", + wsa_strerror(WSAGetLastError())); + return -1; + } + if((netev.lNetworkEvents & FD_READ)) { + if(netev.iErrorCode[FD_READ_BIT] != 0) + verbose(VERB_ALGO, "FD_READ_BIT error: %s", + wsa_strerror(netev.iErrorCode[FD_READ_BIT])); + bits |= EV_READ; + } + if((netev.lNetworkEvents & FD_WRITE)) { + if(netev.iErrorCode[FD_WRITE_BIT] != 0) + verbose(VERB_ALGO, "FD_WRITE_BIT error: %s", + wsa_strerror(netev.iErrorCode[FD_WRITE_BIT])); + bits |= EV_WRITE; + } + if((netev.lNetworkEvents & FD_CONNECT)) { + if(netev.iErrorCode[FD_CONNECT_BIT] != 0) + verbose(VERB_ALGO, "FD_CONNECT_BIT error: %s", + wsa_strerror(netev.iErrorCode[FD_CONNECT_BIT])); + bits |= EV_READ; + bits |= EV_WRITE; + } + if((netev.lNetworkEvents & FD_ACCEPT)) { + if(netev.iErrorCode[FD_ACCEPT_BIT] != 0) + verbose(VERB_ALGO, "FD_ACCEPT_BIT error: %s", + wsa_strerror(netev.iErrorCode[FD_ACCEPT_BIT])); + bits |= EV_READ; + } + if((netev.lNetworkEvents & FD_CLOSE)) { + if(netev.iErrorCode[FD_CLOSE_BIT] != 0) + verbose(VERB_ALGO, "FD_CLOSE_BIT error: %s", + wsa_strerror(netev.iErrorCode[FD_CLOSE_BIT])); + bits |= EV_READ; + bits |= EV_WRITE; + } + if(eventlist[i]->is_tcp && eventlist[i]->stick_events) { + verbose(VERB_ALGO, "winsock %d pass sticky %s%s", + eventlist[i]->ev_fd, + (eventlist[i]->old_events&EV_READ)?"EV_READ":"", + (eventlist[i]->old_events&EV_WRITE)?"EV_WRITE":""); + bits |= eventlist[i]->old_events; + } + if(eventlist[i]->is_tcp && bits) { + eventlist[i]->old_events = bits; + eventlist[i]->stick_events = 1; + if((eventlist[i]->ev_events & bits)) { + newstickies = 1; + } + verbose(VERB_ALGO, "winsock %d store sticky %s%s", + eventlist[i]->ev_fd, + (eventlist[i]->old_events&EV_READ)?"EV_READ":"", + (eventlist[i]->old_events&EV_WRITE)?"EV_WRITE":""); + } + if((bits & eventlist[i]->ev_events)) { + verbose(VERB_ALGO, "winsock event callback %p fd=%d " + "%s%s%s%s%s ; %s%s%s", + eventlist[i], eventlist[i]->ev_fd, + (netev.lNetworkEvents&FD_READ)?" FD_READ":"", + (netev.lNetworkEvents&FD_WRITE)?" FD_WRITE":"", + (netev.lNetworkEvents&FD_CONNECT)? + " FD_CONNECT":"", + (netev.lNetworkEvents&FD_ACCEPT)? + " FD_ACCEPT":"", + (netev.lNetworkEvents&FD_CLOSE)?" FD_CLOSE":"", + (bits&EV_READ)?" EV_READ":"", + (bits&EV_WRITE)?" EV_WRITE":"", + (bits&EV_TIMEOUT)?" EV_TIMEOUT":""); + + fptr_ok(fptr_whitelist_event( + eventlist[i]->ev_callback)); + (*eventlist[i]->ev_callback)(eventlist[i]->ev_fd, + bits & eventlist[i]->ev_events, + eventlist[i]->ev_arg); + } + if(eventlist[i]->is_tcp && bits) + verbose(VERB_ALGO, "winsock %d got sticky %s%s", + eventlist[i]->ev_fd, + (eventlist[i]->old_events&EV_READ)?"EV_READ":"", + (eventlist[i]->old_events&EV_WRITE)?"EV_WRITE":""); + } + verbose(VERB_CLIENT, "winsock_event net"); + if(base->tcp_reinvigorated) { + verbose(VERB_CLIENT, "winsock_event reinvigorated"); + base->tcp_reinvigorated = 0; + newstickies = 1; + } + base->tcp_stickies = newstickies; + verbose(VERB_CLIENT, "winsock_event handle_select end"); + return 0; +} + +int event_base_dispatch(struct event_base *base) +{ + struct timeval wait; + if(settime(base) < 0) + return -1; + while(!base->need_to_exit) + { + /* see if timeouts need handling */ + handle_timeouts(base, base->time_tv, &wait); + if(base->need_to_exit) + return 0; + /* do select */ + if(handle_select(base, &wait) < 0) { + if(base->need_to_exit) + return 0; + return -1; + } + } + return 0; +} + +int event_base_loopexit(struct event_base *base, + struct timeval * ATTR_UNUSED(tv)) +{ + verbose(VERB_CLIENT, "winsock_event loopexit"); + base->need_to_exit = 1; + return 0; +} + +void event_base_free(struct event_base *base) +{ + verbose(VERB_CLIENT, "winsock_event event_base_free"); + if(!base) + return; + if(base->items) + free(base->items); + if(base->times) + free(base->times); + if(base->signals) + free(base->signals); + free(base); +} + +void event_set(struct event *ev, int fd, short bits, + void (*cb)(int, short, void *), void *arg) +{ + ev->node.key = ev; + ev->ev_fd = fd; + ev->ev_events = bits; + ev->ev_callback = cb; + fptr_ok(fptr_whitelist_event(ev->ev_callback)); + ev->ev_arg = arg; + ev->just_checked = 0; + ev->added = 0; +} + +int event_base_set(struct event_base *base, struct event *ev) +{ + ev->ev_base = base; + ev->old_events = 0; + ev->stick_events = 0; + ev->added = 0; + return 0; +} + +int event_add(struct event *ev, struct timeval *tv) +{ + verbose(VERB_ALGO, "event_add %p added=%d fd=%d tv=" ARG_LL "d %s%s%s", + ev, ev->added, ev->ev_fd, + (tv?(long long)tv->tv_sec*1000+(long long)tv->tv_usec/1000:-1), + (ev->ev_events&EV_READ)?" EV_READ":"", + (ev->ev_events&EV_WRITE)?" EV_WRITE":"", + (ev->ev_events&EV_TIMEOUT)?" EV_TIMEOUT":""); + if(ev->added) + event_del(ev); + log_assert(ev->ev_fd==-1 || find_fd(ev->ev_base, ev->ev_fd) == -1); + ev->is_tcp = 0; + ev->is_signal = 0; + ev->just_checked = 0; + + if((ev->ev_events&(EV_READ|EV_WRITE)) && ev->ev_fd != -1) { + BOOL b=0; + int t, l; + long events = 0; + + if(ev->ev_base->max == ev->ev_base->cap) + return -1; + ev->idx = ev->ev_base->max++; + ev->ev_base->items[ev->idx] = ev; + + if( (ev->ev_events&EV_READ) ) + events |= FD_READ; + if( (ev->ev_events&EV_WRITE) ) + events |= FD_WRITE; + l = sizeof(t); + if(getsockopt(ev->ev_fd, SOL_SOCKET, SO_TYPE, + (void*)&t, &l) != 0) + log_err("getsockopt(SO_TYPE) failed: %s", + wsa_strerror(WSAGetLastError())); + if(t == SOCK_STREAM) { + /* TCP socket */ + ev->is_tcp = 1; + events |= FD_CLOSE; + if( (ev->ev_events&EV_WRITE) ) + events |= FD_CONNECT; + l = sizeof(b); + if(getsockopt(ev->ev_fd, SOL_SOCKET, SO_ACCEPTCONN, + (void*)&b, &l) != 0) + log_err("getsockopt(SO_ACCEPTCONN) failed: %s", + wsa_strerror(WSAGetLastError())); + if(b) /* TCP accept socket */ + events |= FD_ACCEPT; + } + ev->hEvent = WSACreateEvent(); + if(ev->hEvent == WSA_INVALID_EVENT) + log_err("WSACreateEvent failed: %s", + wsa_strerror(WSAGetLastError())); + /* automatically sets fd to nonblocking mode. + * nonblocking cannot be disabled, until wsaES(fd, NULL, 0) */ + if(WSAEventSelect(ev->ev_fd, ev->hEvent, events) != 0) { + log_err("WSAEventSelect failed: %s", + wsa_strerror(WSAGetLastError())); + } + if(ev->is_tcp && ev->stick_events && + (ev->ev_events & ev->old_events)) { + /* go to processing the sticky event right away */ + ev->ev_base->tcp_reinvigorated = 1; + } + } + + if(tv && (ev->ev_events&EV_TIMEOUT)) { +#ifndef S_SPLINT_S + struct timeval *now = ev->ev_base->time_tv; + ev->ev_timeout.tv_sec = tv->tv_sec + now->tv_sec; + ev->ev_timeout.tv_usec = tv->tv_usec + now->tv_usec; + while(ev->ev_timeout.tv_usec > 1000000) { + ev->ev_timeout.tv_usec -= 1000000; + ev->ev_timeout.tv_sec++; + } +#endif + (void)rbtree_insert(ev->ev_base->times, &ev->node); + } + ev->added = 1; + return 0; +} + +int event_del(struct event *ev) +{ + verbose(VERB_ALGO, "event_del %p added=%d fd=%d tv=" ARG_LL "d %s%s%s", + ev, ev->added, ev->ev_fd, + (ev->ev_events&EV_TIMEOUT)?(long long)ev->ev_timeout.tv_sec*1000+ + (long long)ev->ev_timeout.tv_usec/1000:-1, + (ev->ev_events&EV_READ)?" EV_READ":"", + (ev->ev_events&EV_WRITE)?" EV_WRITE":"", + (ev->ev_events&EV_TIMEOUT)?" EV_TIMEOUT":""); + if(!ev->added) + return 0; + log_assert(ev->added); + if((ev->ev_events&EV_TIMEOUT)) + (void)rbtree_delete(ev->ev_base->times, &ev->node); + if((ev->ev_events&(EV_READ|EV_WRITE)) && ev->ev_fd != -1) { + log_assert(ev->ev_base->max > 0); + /* remove item and compact the list */ + ev->ev_base->items[ev->idx] = + ev->ev_base->items[ev->ev_base->max-1]; + ev->ev_base->items[ev->ev_base->max-1] = NULL; + ev->ev_base->max--; + if(ev->idx < ev->ev_base->max) + ev->ev_base->items[ev->idx]->idx = ev->idx; + zero_waitfor(ev->ev_base->waitfor, ev->hEvent); + + if(WSAEventSelect(ev->ev_fd, ev->hEvent, 0) != 0) + log_err("WSAEventSelect(disable) failed: %s", + wsa_strerror(WSAGetLastError())); + if(!WSACloseEvent(ev->hEvent)) + log_err("WSACloseEvent failed: %s", + wsa_strerror(WSAGetLastError())); + } + ev->just_checked = 0; + ev->added = 0; + return 0; +} + +/** which base gets to handle signals */ +static struct event_base* signal_base = NULL; +/** signal handler */ +static RETSIGTYPE sigh(int sig) +{ + struct event* ev; + if(!signal_base || sig < 0 || sig >= MAX_SIG) + return; + ev = signal_base->signals[sig]; + if(!ev) + return; + fptr_ok(fptr_whitelist_event(ev->ev_callback)); + (*ev->ev_callback)(sig, EV_SIGNAL, ev->ev_arg); +} + +int signal_add(struct event *ev, struct timeval * ATTR_UNUSED(tv)) +{ + if(ev->ev_fd == -1 || ev->ev_fd >= MAX_SIG) + return -1; + signal_base = ev->ev_base; + ev->ev_base->signals[ev->ev_fd] = ev; + ev->added = 1; + if(signal(ev->ev_fd, sigh) == SIG_ERR) { + return -1; + } + return 0; +} + +int signal_del(struct event *ev) +{ + if(ev->ev_fd == -1 || ev->ev_fd >= MAX_SIG) + return -1; + ev->ev_base->signals[ev->ev_fd] = NULL; + ev->added = 0; + return 0; +} + +void winsock_tcp_wouldblock(struct event* ev, int eventbits) +{ + verbose(VERB_ALGO, "winsock: tcp wouldblock %s", + eventbits==EV_READ?"EV_READ":"EV_WRITE"); + ev->old_events &= (~eventbits); + if(ev->old_events == 0) + ev->stick_events = 0; + /* in case this is the last sticky event, we could + * possibly run an empty handler loop to reset the base + * tcp_stickies variable + */ +} + +int winsock_register_wsaevent(struct event_base* base, struct event* ev, + WSAEVENT wsaevent, void (*cb)(int, short, void*), void* arg) +{ + if(base->max == base->cap) + return 0; + memset(ev, 0, sizeof(*ev)); + ev->ev_fd = -1; + ev->ev_events = EV_READ; + ev->ev_callback = cb; + ev->ev_arg = arg; + ev->is_signal = 1; + ev->hEvent = wsaevent; + ev->added = 1; + ev->ev_base = base; + ev->idx = ev->ev_base->max++; + ev->ev_base->items[ev->idx] = ev; + return 1; +} + +void winsock_unregister_wsaevent(struct event* ev) +{ + if(!ev || !ev->added) return; + log_assert(ev->added && ev->ev_base->max > 0) + /* remove item and compact the list */ + ev->ev_base->items[ev->idx] = ev->ev_base->items[ev->ev_base->max-1]; + ev->ev_base->items[ev->ev_base->max-1] = NULL; + ev->ev_base->max--; + if(ev->idx < ev->ev_base->max) + ev->ev_base->items[ev->idx]->idx = ev->idx; + ev->added = 0; +} + +#else /* USE_WINSOCK */ +/** symbol so this codefile defines symbols. pleasing ranlib on OSX 10.5 */ +int winsock_unused_symbol = 1; +#endif /* USE_WINSOCK */ diff --git a/external/unbound/util/winsock_event.h b/external/unbound/util/winsock_event.h new file mode 100644 index 000000000..40892c14b --- /dev/null +++ b/external/unbound/util/winsock_event.h @@ -0,0 +1,264 @@ +/* + * util/winsock_event.h - unbound event handling for winsock on windows + * + * Copyright (c) 2008, NLnet Labs. All rights reserved. + * + * This software is open source. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * Neither the name of the NLNET LABS nor the names of its contributors may + * be used to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/** + * \file + * + * This file contains interface functions with the WinSock2 API on Windows. + * It uses the winsock WSAWaitForMultipleEvents interface on a number of + * sockets. + * + * Note that windows can only wait for max 64 events at one time. + * + * Also, file descriptors cannot be waited for. + * + * Named pipes are not easily available (and are not usable in select() ). + * For interprocess communication, it is possible to wait for a hEvent to + * be signaled by another thread. + * + * When a socket becomes readable, then it will not be flagged as + * readable again until you have gotten WOULDBLOCK from a recv routine. + * That means the event handler must store the readability (edge notify) + * and process the incoming data until it blocks. + * The function performing recv then has to inform the event handler that + * the socket has blocked, and the event handler can mark it as such. + * Thus, this file transforms the edge notify from windows to a level notify + * that is compatible with UNIX. + * The WSAEventSelect page says that it does do level notify, as long + * as you call a recv/write/accept at least once when it is signalled. + * This last bit is not true, even though documented in server2008 api docs + * from microsoft, it does not happen at all. Instead you have to test for + * WSAEWOULDBLOCK on a tcp stream, and only then retest the socket. + * And before that remember the previous result as still valid. + * + * To stay 'fair', instead of emptying a socket completely, the event handler + * can test the other (marked as blocking) sockets for new events. + * + * Additionally, TCP accept sockets get special event support. + * + * Socket numbers are not starting small, they can be any number (say 33060). + * Therefore, bitmaps are not used, but arrays. + * + * on winsock, you must use recv() and send() for TCP reads and writes, + * not read() and write(), those work only on files. + * + * Also fseek and fseeko do not work if a FILE is not fopen-ed in binary mode. + * + * When under a high load windows gives out lots of errors, from recvfrom + * on udp sockets for example (WSAECONNRESET). Even though the udp socket + * has no connection per se. + */ + +#ifndef UTIL_WINSOCK_EVENT_H +#define UTIL_WINSOCK_EVENT_H + +#ifdef USE_WINSOCK + +#ifndef HAVE_EVENT_BASE_FREE +#define HAVE_EVENT_BASE_FREE +#endif + +/** event timeout */ +#define EV_TIMEOUT 0x01 +/** event fd readable */ +#define EV_READ 0x02 +/** event fd writable */ +#define EV_WRITE 0x04 +/** event signal */ +#define EV_SIGNAL 0x08 +/** event must persist */ +#define EV_PERSIST 0x10 + +/* needs our redblack tree */ +#include "rbtree.h" + +/** max number of signals to support */ +#define MAX_SIG 32 + +/** The number of items that the winsock event handler can service. + * Windows cannot handle more anyway */ +#define WSK_MAX_ITEMS 64 + +/** + * event base for winsock event handler + */ +struct event_base +{ + /** sorted by timeout (absolute), ptr */ + rbtree_t* times; + /** array (first part in use) of handles to work on */ + struct event** items; + /** number of items in use in array */ + int max; + /** capacity of array, size of array in items */ + int cap; + /** array of 0 - maxsig of ptr to event for it */ + struct event** signals; + /** if we need to exit */ + int need_to_exit; + /** where to store time in seconds */ + time_t* time_secs; + /** where to store time in microseconds */ + struct timeval* time_tv; + /** + * TCP streams have sticky events to them, these are not + * reported by the windows event system anymore, we have to + * keep reporting those events as present until wouldblock() is + * signalled by the handler back to use. + */ + int tcp_stickies; + /** + * should next cycle process reinvigorated stickies, + * these are stickies that have been stored, but due to a new + * event_add a sudden interest in the event has incepted. + */ + int tcp_reinvigorated; + /** The list of events that is currently being processed. */ + WSAEVENT waitfor[WSK_MAX_ITEMS]; +}; + +/** + * Event structure. Has some of the event elements. + */ +struct event { + /** node in timeout rbtree */ + rbnode_t node; + /** is event already added */ + int added; + + /** event base it belongs to */ + struct event_base *ev_base; + /** fd to poll or -1 for timeouts. signal number for sigs. */ + int ev_fd; + /** what events this event is interested in, see EV_.. above. */ + short ev_events; + /** timeout value */ + struct timeval ev_timeout; + + /** callback to call: fd, eventbits, userarg */ + void (*ev_callback)(int, short, void *); + /** callback user arg */ + void *ev_arg; + + /* ----- nonpublic part, for winsock_event only ----- */ + /** index of this event in the items array (if added) */ + int idx; + /** the event handle to wait for new events to become ready */ + WSAEVENT hEvent; + /** true if this filedes is a TCP socket and needs special attention */ + int is_tcp; + /** remembered EV_ values */ + short old_events; + /** should remembered EV_ values be used for TCP streams. + * Reset after WOULDBLOCK is signaled using the function. */ + int stick_events; + + /** true if this event is a signaling WSAEvent by the user. + * User created and user closed WSAEvent. Only signaled/unsigneled, + * no read/write/distinctions needed. */ + int is_signal; + /** used during callbacks to see which events were just checked */ + int just_checked; +}; + +/** create event base */ +void *event_init(time_t* time_secs, struct timeval* time_tv); +/** get version */ +const char *event_get_version(void); +/** get polling method (select,epoll) */ +const char *event_get_method(void); +/** run select in a loop */ +int event_base_dispatch(struct event_base *); +/** exit that loop */ +int event_base_loopexit(struct event_base *, struct timeval *); +/** free event base. Free events yourself */ +void event_base_free(struct event_base *); +/** set content of event */ +void event_set(struct event *, int, short, void (*)(int, short, void *), void *); + +/** add event to a base. You *must* call this for every event. */ +int event_base_set(struct event_base *, struct event *); +/** add event to make it active. You may not change it with event_set anymore */ +int event_add(struct event *, struct timeval *); +/** remove event. You may change it again */ +int event_del(struct event *); + +#define evtimer_add(ev, tv) event_add(ev, tv) +#define evtimer_del(ev) event_del(ev) + +/* uses different implementation. Cannot mix fd/timeouts and signals inside + * the same struct event. create several event structs for that. */ +/** install signal handler */ +int signal_add(struct event *, struct timeval *); +/** set signal event contents */ +#define signal_set(ev, x, cb, arg) \ + event_set(ev, x, EV_SIGNAL|EV_PERSIST, cb, arg) +/** remove signal handler */ +int signal_del(struct event *); + +/** compare events in tree, based on timevalue, ptr for uniqueness */ +int mini_ev_cmp(const void* a, const void* b); + +/** + * Routine for windows only, where the handling layer can signal that + * a TCP stream encountered WSAEWOULDBLOCK for a stream and thus needs + * retesting the event. + * Pass if EV_READ or EV_WRITE gave wouldblock. + */ +void winsock_tcp_wouldblock(struct event* ev, int eventbit); + +/** + * Routine for windows only. where you pass a signal WSAEvent that + * you wait for. When the event is signaled, the callback gets called. + * The callback has to WSAResetEvent to disable the signal. + * @param base: the event base. + * @param ev: the event structure for data storage + * can be passed uninitialised. + * @param wsaevent: the WSAEvent that gets signaled. + * @param cb: callback routine. + * @param arg: user argument to callback routine. + * @return false on error. + */ +int winsock_register_wsaevent(struct event_base* base, struct event* ev, + WSAEVENT wsaevent, void (*cb)(int, short, void*), void* arg); + +/** + * Unregister a wsaevent. User has to close the WSAEVENT itself. + * @param ev: event data storage. + */ +void winsock_unregister_wsaevent(struct event* ev); + +#endif /* USE_WINSOCK */ +#endif /* UTIL_WINSOCK_EVENT_H */ |