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-rw-r--r--external/unbound/daemon/cachedump.c886
1 files changed, 886 insertions, 0 deletions
diff --git a/external/unbound/daemon/cachedump.c b/external/unbound/daemon/cachedump.c
new file mode 100644
index 000000000..cf5b1a12c
--- /dev/null
+++ b/external/unbound/daemon/cachedump.c
@@ -0,0 +1,886 @@
+/*
+ * daemon/cachedump.c - dump the cache to text format.
+ *
+ * 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 functions to read and write the cache(s)
+ * to text format.
+ */
+#include "config.h"
+#include <openssl/ssl.h>
+#include "daemon/cachedump.h"
+#include "daemon/remote.h"
+#include "daemon/worker.h"
+#include "services/cache/rrset.h"
+#include "services/cache/dns.h"
+#include "services/cache/infra.h"
+#include "util/data/msgreply.h"
+#include "util/regional.h"
+#include "util/net_help.h"
+#include "util/data/dname.h"
+#include "iterator/iterator.h"
+#include "iterator/iter_delegpt.h"
+#include "iterator/iter_utils.h"
+#include "iterator/iter_fwd.h"
+#include "iterator/iter_hints.h"
+#include "ldns/sbuffer.h"
+#include "ldns/wire2str.h"
+#include "ldns/str2wire.h"
+
+/** dump one rrset zonefile line */
+static int
+dump_rrset_line(SSL* ssl, struct ub_packed_rrset_key* k, time_t now, size_t i)
+{
+ char s[65535];
+ if(!packed_rr_to_string(k, i, now, s, sizeof(s))) {
+ return ssl_printf(ssl, "BADRR\n");
+ }
+ return ssl_printf(ssl, "%s", s);
+}
+
+/** dump rrset key and data info */
+static int
+dump_rrset(SSL* ssl, struct ub_packed_rrset_key* k,
+ struct packed_rrset_data* d, time_t now)
+{
+ size_t i;
+ /* rd lock held by caller */
+ if(!k || !d) return 1;
+ if(d->ttl < now) return 1; /* expired */
+
+ /* meta line */
+ if(!ssl_printf(ssl, ";rrset%s " ARG_LL "d %u %u %d %d\n",
+ (k->rk.flags & PACKED_RRSET_NSEC_AT_APEX)?" nsec_apex":"",
+ (long long)(d->ttl - now),
+ (unsigned)d->count, (unsigned)d->rrsig_count,
+ (int)d->trust, (int)d->security
+ ))
+ return 0;
+ for(i=0; i<d->count + d->rrsig_count; i++) {
+ if(!dump_rrset_line(ssl, k, now, i))
+ return 0;
+ }
+ return 1;
+}
+
+/** dump lruhash rrset cache */
+static int
+dump_rrset_lruhash(SSL* ssl, struct lruhash* h, time_t now)
+{
+ struct lruhash_entry* e;
+ /* lruhash already locked by caller */
+ /* walk in order of lru; best first */
+ for(e=h->lru_start; e; e = e->lru_next) {
+ lock_rw_rdlock(&e->lock);
+ if(!dump_rrset(ssl, (struct ub_packed_rrset_key*)e->key,
+ (struct packed_rrset_data*)e->data, now)) {
+ lock_rw_unlock(&e->lock);
+ return 0;
+ }
+ lock_rw_unlock(&e->lock);
+ }
+ return 1;
+}
+
+/** dump rrset cache */
+static int
+dump_rrset_cache(SSL* ssl, struct worker* worker)
+{
+ struct rrset_cache* r = worker->env.rrset_cache;
+ size_t slab;
+ if(!ssl_printf(ssl, "START_RRSET_CACHE\n")) return 0;
+ for(slab=0; slab<r->table.size; slab++) {
+ lock_quick_lock(&r->table.array[slab]->lock);
+ if(!dump_rrset_lruhash(ssl, r->table.array[slab],
+ *worker->env.now)) {
+ lock_quick_unlock(&r->table.array[slab]->lock);
+ return 0;
+ }
+ lock_quick_unlock(&r->table.array[slab]->lock);
+ }
+ return ssl_printf(ssl, "END_RRSET_CACHE\n");
+}
+
+/** dump message to rrset reference */
+static int
+dump_msg_ref(SSL* ssl, struct ub_packed_rrset_key* k)
+{
+ char* nm, *tp, *cl;
+ nm = sldns_wire2str_dname(k->rk.dname, k->rk.dname_len);
+ tp = sldns_wire2str_type(ntohs(k->rk.type));
+ cl = sldns_wire2str_class(ntohs(k->rk.rrset_class));
+ if(!nm || !cl || !tp) {
+ free(nm);
+ free(tp);
+ free(cl);
+ return ssl_printf(ssl, "BADREF\n");
+ }
+ if(!ssl_printf(ssl, "%s %s %s %d\n", nm, cl, tp, (int)k->rk.flags)) {
+ free(nm);
+ free(tp);
+ free(cl);
+ return 0;
+ }
+ free(nm);
+ free(tp);
+ free(cl);
+
+ return 1;
+}
+
+/** dump message entry */
+static int
+dump_msg(SSL* ssl, struct query_info* k, struct reply_info* d,
+ time_t now)
+{
+ size_t i;
+ char* nm, *tp, *cl;
+ if(!k || !d) return 1;
+ if(d->ttl < now) return 1; /* expired */
+
+ nm = sldns_wire2str_dname(k->qname, k->qname_len);
+ tp = sldns_wire2str_type(k->qtype);
+ cl = sldns_wire2str_class(k->qclass);
+ if(!nm || !tp || !cl) {
+ free(nm);
+ free(tp);
+ free(cl);
+ return 1; /* skip this entry */
+ }
+ if(!rrset_array_lock(d->ref, d->rrset_count, now)) {
+ /* rrsets have timed out or do not exist */
+ free(nm);
+ free(tp);
+ free(cl);
+ return 1; /* skip this entry */
+ }
+
+ /* meta line */
+ if(!ssl_printf(ssl, "msg %s %s %s %d %d " ARG_LL "d %d %u %u %u\n",
+ nm, cl, tp,
+ (int)d->flags, (int)d->qdcount,
+ (long long)(d->ttl-now), (int)d->security,
+ (unsigned)d->an_numrrsets,
+ (unsigned)d->ns_numrrsets,
+ (unsigned)d->ar_numrrsets)) {
+ free(nm);
+ free(tp);
+ free(cl);
+ rrset_array_unlock(d->ref, d->rrset_count);
+ return 0;
+ }
+ free(nm);
+ free(tp);
+ free(cl);
+
+ for(i=0; i<d->rrset_count; i++) {
+ if(!dump_msg_ref(ssl, d->rrsets[i])) {
+ rrset_array_unlock(d->ref, d->rrset_count);
+ return 0;
+ }
+ }
+ rrset_array_unlock(d->ref, d->rrset_count);
+
+ return 1;
+}
+
+/** copy msg to worker pad */
+static int
+copy_msg(struct regional* region, struct lruhash_entry* e,
+ struct query_info** k, struct reply_info** d)
+{
+ struct reply_info* rep = (struct reply_info*)e->data;
+ *d = (struct reply_info*)regional_alloc_init(region, e->data,
+ sizeof(struct reply_info) +
+ sizeof(struct rrset_ref) * (rep->rrset_count-1) +
+ sizeof(struct ub_packed_rrset_key*) * rep->rrset_count);
+ if(!*d)
+ return 0;
+ (*d)->rrsets = (struct ub_packed_rrset_key**)(void *)(
+ (uint8_t*)(&((*d)->ref[0])) +
+ sizeof(struct rrset_ref) * rep->rrset_count);
+ *k = (struct query_info*)regional_alloc_init(region,
+ e->key, sizeof(struct query_info));
+ if(!*k)
+ return 0;
+ (*k)->qname = regional_alloc_init(region,
+ (*k)->qname, (*k)->qname_len);
+ return (*k)->qname != NULL;
+}
+
+/** dump lruhash msg cache */
+static int
+dump_msg_lruhash(SSL* ssl, struct worker* worker, struct lruhash* h)
+{
+ struct lruhash_entry* e;
+ struct query_info* k;
+ struct reply_info* d;
+
+ /* lruhash already locked by caller */
+ /* walk in order of lru; best first */
+ for(e=h->lru_start; e; e = e->lru_next) {
+ regional_free_all(worker->scratchpad);
+ lock_rw_rdlock(&e->lock);
+ /* make copy of rrset in worker buffer */
+ if(!copy_msg(worker->scratchpad, e, &k, &d)) {
+ lock_rw_unlock(&e->lock);
+ return 0;
+ }
+ lock_rw_unlock(&e->lock);
+ /* release lock so we can lookup the rrset references
+ * in the rrset cache */
+ if(!dump_msg(ssl, k, d, *worker->env.now)) {
+ return 0;
+ }
+ }
+ return 1;
+}
+
+/** dump msg cache */
+static int
+dump_msg_cache(SSL* ssl, struct worker* worker)
+{
+ struct slabhash* sh = worker->env.msg_cache;
+ size_t slab;
+ if(!ssl_printf(ssl, "START_MSG_CACHE\n")) return 0;
+ for(slab=0; slab<sh->size; slab++) {
+ lock_quick_lock(&sh->array[slab]->lock);
+ if(!dump_msg_lruhash(ssl, worker, sh->array[slab])) {
+ lock_quick_unlock(&sh->array[slab]->lock);
+ return 0;
+ }
+ lock_quick_unlock(&sh->array[slab]->lock);
+ }
+ return ssl_printf(ssl, "END_MSG_CACHE\n");
+}
+
+int
+dump_cache(SSL* ssl, struct worker* worker)
+{
+ if(!dump_rrset_cache(ssl, worker))
+ return 0;
+ if(!dump_msg_cache(ssl, worker))
+ return 0;
+ return ssl_printf(ssl, "EOF\n");
+}
+
+/** read a line from ssl into buffer */
+static int
+ssl_read_buf(SSL* ssl, sldns_buffer* buf)
+{
+ return ssl_read_line(ssl, (char*)sldns_buffer_begin(buf),
+ sldns_buffer_capacity(buf));
+}
+
+/** check fixed text on line */
+static int
+read_fixed(SSL* ssl, sldns_buffer* buf, const char* str)
+{
+ if(!ssl_read_buf(ssl, buf)) return 0;
+ return (strcmp((char*)sldns_buffer_begin(buf), str) == 0);
+}
+
+/** load an RR into rrset */
+static int
+load_rr(SSL* ssl, sldns_buffer* buf, struct regional* region,
+ struct ub_packed_rrset_key* rk, struct packed_rrset_data* d,
+ unsigned int i, int is_rrsig, int* go_on, time_t now)
+{
+ uint8_t rr[LDNS_RR_BUF_SIZE];
+ size_t rr_len = sizeof(rr), dname_len = 0;
+ int status;
+
+ /* read the line */
+ if(!ssl_read_buf(ssl, buf))
+ return 0;
+ if(strncmp((char*)sldns_buffer_begin(buf), "BADRR\n", 6) == 0) {
+ *go_on = 0;
+ return 1;
+ }
+ status = sldns_str2wire_rr_buf((char*)sldns_buffer_begin(buf), rr,
+ &rr_len, &dname_len, 3600, NULL, 0, NULL, 0);
+ if(status != 0) {
+ log_warn("error cannot parse rr: %s: %s",
+ sldns_get_errorstr_parse(status),
+ (char*)sldns_buffer_begin(buf));
+ return 0;
+ }
+ if(is_rrsig && sldns_wirerr_get_type(rr, rr_len, dname_len)
+ != LDNS_RR_TYPE_RRSIG) {
+ log_warn("error expected rrsig but got %s",
+ (char*)sldns_buffer_begin(buf));
+ return 0;
+ }
+
+ /* convert ldns rr into packed_rr */
+ d->rr_ttl[i] = (time_t)sldns_wirerr_get_ttl(rr, rr_len, dname_len) + now;
+ sldns_buffer_clear(buf);
+ d->rr_len[i] = sldns_wirerr_get_rdatalen(rr, rr_len, dname_len)+2;
+ d->rr_data[i] = (uint8_t*)regional_alloc_init(region,
+ sldns_wirerr_get_rdatawl(rr, rr_len, dname_len), d->rr_len[i]);
+ if(!d->rr_data[i]) {
+ log_warn("error out of memory");
+ return 0;
+ }
+
+ /* if first entry, fill the key structure */
+ if(i==0) {
+ rk->rk.type = htons(sldns_wirerr_get_type(rr, rr_len, dname_len));
+ rk->rk.rrset_class = htons(sldns_wirerr_get_class(rr, rr_len, dname_len));
+ rk->rk.dname_len = dname_len;
+ rk->rk.dname = regional_alloc_init(region, rr, dname_len);
+ if(!rk->rk.dname) {
+ log_warn("error out of memory");
+ return 0;
+ }
+ }
+
+ return 1;
+}
+
+/** move entry into cache */
+static int
+move_into_cache(struct ub_packed_rrset_key* k,
+ struct packed_rrset_data* d, struct worker* worker)
+{
+ struct ub_packed_rrset_key* ak;
+ struct packed_rrset_data* ad;
+ size_t s, i, num = d->count + d->rrsig_count;
+ struct rrset_ref ref;
+ uint8_t* p;
+
+ ak = alloc_special_obtain(&worker->alloc);
+ if(!ak) {
+ log_warn("error out of memory");
+ return 0;
+ }
+ ak->entry.data = NULL;
+ ak->rk = k->rk;
+ ak->entry.hash = rrset_key_hash(&k->rk);
+ ak->rk.dname = (uint8_t*)memdup(k->rk.dname, k->rk.dname_len);
+ if(!ak->rk.dname) {
+ log_warn("error out of memory");
+ ub_packed_rrset_parsedelete(ak, &worker->alloc);
+ return 0;
+ }
+ s = sizeof(*ad) + (sizeof(size_t) + sizeof(uint8_t*) +
+ sizeof(time_t))* num;
+ for(i=0; i<num; i++)
+ s += d->rr_len[i];
+ ad = (struct packed_rrset_data*)malloc(s);
+ if(!ad) {
+ log_warn("error out of memory");
+ ub_packed_rrset_parsedelete(ak, &worker->alloc);
+ return 0;
+ }
+ p = (uint8_t*)ad;
+ memmove(p, d, sizeof(*ad));
+ p += sizeof(*ad);
+ memmove(p, &d->rr_len[0], sizeof(size_t)*num);
+ p += sizeof(size_t)*num;
+ memmove(p, &d->rr_data[0], sizeof(uint8_t*)*num);
+ p += sizeof(uint8_t*)*num;
+ memmove(p, &d->rr_ttl[0], sizeof(time_t)*num);
+ p += sizeof(time_t)*num;
+ for(i=0; i<num; i++) {
+ memmove(p, d->rr_data[i], d->rr_len[i]);
+ p += d->rr_len[i];
+ }
+ packed_rrset_ptr_fixup(ad);
+
+ ak->entry.data = ad;
+
+ ref.key = ak;
+ ref.id = ak->id;
+ (void)rrset_cache_update(worker->env.rrset_cache, &ref,
+ &worker->alloc, *worker->env.now);
+ return 1;
+}
+
+/** load an rrset entry */
+static int
+load_rrset(SSL* ssl, sldns_buffer* buf, struct worker* worker)
+{
+ char* s = (char*)sldns_buffer_begin(buf);
+ struct regional* region = worker->scratchpad;
+ struct ub_packed_rrset_key* rk;
+ struct packed_rrset_data* d;
+ unsigned int rr_count, rrsig_count, trust, security;
+ long long ttl;
+ unsigned int i;
+ int go_on = 1;
+ regional_free_all(region);
+
+ rk = (struct ub_packed_rrset_key*)regional_alloc_zero(region,
+ sizeof(*rk));
+ d = (struct packed_rrset_data*)regional_alloc_zero(region, sizeof(*d));
+ if(!rk || !d) {
+ log_warn("error out of memory");
+ return 0;
+ }
+
+ if(strncmp(s, ";rrset", 6) != 0) {
+ log_warn("error expected ';rrset' but got %s", s);
+ return 0;
+ }
+ s += 6;
+ if(strncmp(s, " nsec_apex", 10) == 0) {
+ s += 10;
+ rk->rk.flags |= PACKED_RRSET_NSEC_AT_APEX;
+ }
+ if(sscanf(s, " " ARG_LL "d %u %u %u %u", &ttl, &rr_count, &rrsig_count,
+ &trust, &security) != 5) {
+ log_warn("error bad rrset spec %s", s);
+ return 0;
+ }
+ if(rr_count == 0 && rrsig_count == 0) {
+ log_warn("bad rrset without contents");
+ return 0;
+ }
+ d->count = (size_t)rr_count;
+ d->rrsig_count = (size_t)rrsig_count;
+ d->security = (enum sec_status)security;
+ d->trust = (enum rrset_trust)trust;
+ d->ttl = (time_t)ttl + *worker->env.now;
+
+ d->rr_len = regional_alloc_zero(region,
+ sizeof(size_t)*(d->count+d->rrsig_count));
+ d->rr_ttl = regional_alloc_zero(region,
+ sizeof(time_t)*(d->count+d->rrsig_count));
+ d->rr_data = regional_alloc_zero(region,
+ sizeof(uint8_t*)*(d->count+d->rrsig_count));
+ if(!d->rr_len || !d->rr_ttl || !d->rr_data) {
+ log_warn("error out of memory");
+ return 0;
+ }
+
+ /* read the rr's themselves */
+ for(i=0; i<rr_count; i++) {
+ if(!load_rr(ssl, buf, region, rk, d, i, 0,
+ &go_on, *worker->env.now)) {
+ log_warn("could not read rr %u", i);
+ return 0;
+ }
+ }
+ for(i=0; i<rrsig_count; i++) {
+ if(!load_rr(ssl, buf, region, rk, d, i+rr_count, 1,
+ &go_on, *worker->env.now)) {
+ log_warn("could not read rrsig %u", i);
+ return 0;
+ }
+ }
+ if(!go_on) {
+ /* skip this entry */
+ return 1;
+ }
+
+ return move_into_cache(rk, d, worker);
+}
+
+/** load rrset cache */
+static int
+load_rrset_cache(SSL* ssl, struct worker* worker)
+{
+ sldns_buffer* buf = worker->env.scratch_buffer;
+ if(!read_fixed(ssl, buf, "START_RRSET_CACHE")) return 0;
+ while(ssl_read_buf(ssl, buf) &&
+ strcmp((char*)sldns_buffer_begin(buf), "END_RRSET_CACHE")!=0) {
+ if(!load_rrset(ssl, buf, worker))
+ return 0;
+ }
+ return 1;
+}
+
+/** read qinfo from next three words */
+static char*
+load_qinfo(char* str, struct query_info* qinfo, struct regional* region)
+{
+ /* s is part of the buf */
+ char* s = str;
+ uint8_t rr[LDNS_RR_BUF_SIZE];
+ size_t rr_len = sizeof(rr), dname_len = 0;
+ int status;
+
+ /* skip three words */
+ s = strchr(str, ' ');
+ if(s) s = strchr(s+1, ' ');
+ if(s) s = strchr(s+1, ' ');
+ if(!s) {
+ log_warn("error line too short, %s", str);
+ return NULL;
+ }
+ s[0] = 0;
+ s++;
+
+ /* parse them */
+ status = sldns_str2wire_rr_question_buf(str, rr, &rr_len, &dname_len,
+ NULL, 0, NULL, 0);
+ if(status != 0) {
+ log_warn("error cannot parse: %s %s",
+ sldns_get_errorstr_parse(status), str);
+ return NULL;
+ }
+ qinfo->qtype = sldns_wirerr_get_type(rr, rr_len, dname_len);
+ qinfo->qclass = sldns_wirerr_get_class(rr, rr_len, dname_len);
+ qinfo->qname_len = dname_len;
+ qinfo->qname = (uint8_t*)regional_alloc_init(region, rr, dname_len);
+ if(!qinfo->qname) {
+ log_warn("error out of memory");
+ return NULL;
+ }
+
+ return s;
+}
+
+/** load a msg rrset reference */
+static int
+load_ref(SSL* ssl, sldns_buffer* buf, struct worker* worker,
+ struct regional *region, struct ub_packed_rrset_key** rrset,
+ int* go_on)
+{
+ char* s = (char*)sldns_buffer_begin(buf);
+ struct query_info qinfo;
+ unsigned int flags;
+ struct ub_packed_rrset_key* k;
+
+ /* read line */
+ if(!ssl_read_buf(ssl, buf))
+ return 0;
+ if(strncmp(s, "BADREF", 6) == 0) {
+ *go_on = 0; /* its bad, skip it and skip message */
+ return 1;
+ }
+
+ s = load_qinfo(s, &qinfo, region);
+ if(!s) {
+ return 0;
+ }
+ if(sscanf(s, " %u", &flags) != 1) {
+ log_warn("error cannot parse flags: %s", s);
+ return 0;
+ }
+
+ /* lookup in cache */
+ k = rrset_cache_lookup(worker->env.rrset_cache, qinfo.qname,
+ qinfo.qname_len, qinfo.qtype, qinfo.qclass,
+ (uint32_t)flags, *worker->env.now, 0);
+ if(!k) {
+ /* not found or expired */
+ *go_on = 0;
+ return 1;
+ }
+
+ /* store in result */
+ *rrset = packed_rrset_copy_region(k, region, *worker->env.now);
+ lock_rw_unlock(&k->entry.lock);
+
+ return (*rrset != NULL);
+}
+
+/** load a msg entry */
+static int
+load_msg(SSL* ssl, sldns_buffer* buf, struct worker* worker)
+{
+ struct regional* region = worker->scratchpad;
+ struct query_info qinf;
+ struct reply_info rep;
+ char* s = (char*)sldns_buffer_begin(buf);
+ unsigned int flags, qdcount, security, an, ns, ar;
+ long long ttl;
+ size_t i;
+ int go_on = 1;
+
+ regional_free_all(region);
+
+ if(strncmp(s, "msg ", 4) != 0) {
+ log_warn("error expected msg but got %s", s);
+ return 0;
+ }
+ s += 4;
+ s = load_qinfo(s, &qinf, region);
+ if(!s) {
+ return 0;
+ }
+
+ /* read remainder of line */
+ if(sscanf(s, " %u %u " ARG_LL "d %u %u %u %u", &flags, &qdcount, &ttl,
+ &security, &an, &ns, &ar) != 7) {
+ log_warn("error cannot parse numbers: %s", s);
+ return 0;
+ }
+ rep.flags = (uint16_t)flags;
+ rep.qdcount = (uint16_t)qdcount;
+ rep.ttl = (time_t)ttl;
+ rep.prefetch_ttl = PREFETCH_TTL_CALC(rep.ttl);
+ rep.security = (enum sec_status)security;
+ rep.an_numrrsets = (size_t)an;
+ rep.ns_numrrsets = (size_t)ns;
+ rep.ar_numrrsets = (size_t)ar;
+ rep.rrset_count = (size_t)an+(size_t)ns+(size_t)ar;
+ rep.rrsets = (struct ub_packed_rrset_key**)regional_alloc_zero(
+ region, sizeof(struct ub_packed_rrset_key*)*rep.rrset_count);
+
+ /* fill repinfo with references */
+ for(i=0; i<rep.rrset_count; i++) {
+ if(!load_ref(ssl, buf, worker, region, &rep.rrsets[i],
+ &go_on)) {
+ return 0;
+ }
+ }
+
+ if(!go_on)
+ return 1; /* skip this one, not all references satisfied */
+
+ if(!dns_cache_store(&worker->env, &qinf, &rep, 0, 0, 0, NULL)) {
+ log_warn("error out of memory");
+ return 0;
+ }
+ return 1;
+}
+
+/** load msg cache */
+static int
+load_msg_cache(SSL* ssl, struct worker* worker)
+{
+ sldns_buffer* buf = worker->env.scratch_buffer;
+ if(!read_fixed(ssl, buf, "START_MSG_CACHE")) return 0;
+ while(ssl_read_buf(ssl, buf) &&
+ strcmp((char*)sldns_buffer_begin(buf), "END_MSG_CACHE")!=0) {
+ if(!load_msg(ssl, buf, worker))
+ return 0;
+ }
+ return 1;
+}
+
+int
+load_cache(SSL* ssl, struct worker* worker)
+{
+ if(!load_rrset_cache(ssl, worker))
+ return 0;
+ if(!load_msg_cache(ssl, worker))
+ return 0;
+ return read_fixed(ssl, worker->env.scratch_buffer, "EOF");
+}
+
+/** print details on a delegation point */
+static void
+print_dp_details(SSL* ssl, struct worker* worker, struct delegpt* dp)
+{
+ char buf[257];
+ struct delegpt_addr* a;
+ int lame, dlame, rlame, rto, edns_vs, to, delay,
+ tA = 0, tAAAA = 0, tother = 0;
+ long long entry_ttl;
+ struct rtt_info ri;
+ uint8_t edns_lame_known;
+ for(a = dp->target_list; a; a = a->next_target) {
+ addr_to_str(&a->addr, a->addrlen, buf, sizeof(buf));
+ if(!ssl_printf(ssl, "%-16s\t", buf))
+ return;
+ if(a->bogus) {
+ if(!ssl_printf(ssl, "Address is BOGUS. "))
+ return;
+ }
+ /* lookup in infra cache */
+ delay=0;
+ entry_ttl = infra_get_host_rto(worker->env.infra_cache,
+ &a->addr, a->addrlen, dp->name, dp->namelen,
+ &ri, &delay, *worker->env.now, &tA, &tAAAA, &tother);
+ if(entry_ttl == -2 && ri.rto >= USEFUL_SERVER_TOP_TIMEOUT) {
+ if(!ssl_printf(ssl, "expired, rto %d msec, tA %d "
+ "tAAAA %d tother %d.\n", ri.rto, tA, tAAAA,
+ tother))
+ return;
+ continue;
+ }
+ if(entry_ttl == -1 || entry_ttl == -2) {
+ if(!ssl_printf(ssl, "not in infra cache.\n"))
+ return;
+ continue; /* skip stuff not in infra cache */
+ }
+
+ /* uses type_A because most often looked up, but other
+ * lameness won't be reported then */
+ if(!infra_get_lame_rtt(worker->env.infra_cache,
+ &a->addr, a->addrlen, dp->name, dp->namelen,
+ LDNS_RR_TYPE_A, &lame, &dlame, &rlame, &rto,
+ *worker->env.now)) {
+ if(!ssl_printf(ssl, "not in infra cache.\n"))
+ return;
+ continue; /* skip stuff not in infra cache */
+ }
+ if(!ssl_printf(ssl, "%s%s%s%srto %d msec, ttl " ARG_LL "d, "
+ "ping %d var %d rtt %d, tA %d, tAAAA %d, tother %d",
+ lame?"LAME ":"", dlame?"NoDNSSEC ":"",
+ a->lame?"AddrWasParentSide ":"",
+ rlame?"NoAuthButRecursive ":"", rto, entry_ttl,
+ ri.srtt, ri.rttvar, rtt_notimeout(&ri),
+ tA, tAAAA, tother))
+ return;
+ if(delay)
+ if(!ssl_printf(ssl, ", probedelay %d", delay))
+ return;
+ if(infra_host(worker->env.infra_cache, &a->addr, a->addrlen,
+ dp->name, dp->namelen, *worker->env.now, &edns_vs,
+ &edns_lame_known, &to)) {
+ if(edns_vs == -1) {
+ if(!ssl_printf(ssl, ", noEDNS%s.",
+ edns_lame_known?" probed":" assumed"))
+ return;
+ } else {
+ if(!ssl_printf(ssl, ", EDNS %d%s.", edns_vs,
+ edns_lame_known?" probed":" assumed"))
+ return;
+ }
+ }
+ if(!ssl_printf(ssl, "\n"))
+ return;
+ }
+}
+
+/** print main dp info */
+static void
+print_dp_main(SSL* ssl, struct delegpt* dp, struct dns_msg* msg)
+{
+ size_t i, n_ns, n_miss, n_addr, n_res, n_avail;
+
+ /* print the dp */
+ if(msg)
+ for(i=0; i<msg->rep->rrset_count; i++) {
+ struct ub_packed_rrset_key* k = msg->rep->rrsets[i];
+ struct packed_rrset_data* d =
+ (struct packed_rrset_data*)k->entry.data;
+ if(d->security == sec_status_bogus) {
+ if(!ssl_printf(ssl, "Address is BOGUS:\n"))
+ return;
+ }
+ if(!dump_rrset(ssl, k, d, 0))
+ return;
+ }
+ delegpt_count_ns(dp, &n_ns, &n_miss);
+ delegpt_count_addr(dp, &n_addr, &n_res, &n_avail);
+ /* since dp has not been used by iterator, all are available*/
+ if(!ssl_printf(ssl, "Delegation with %d names, of which %d "
+ "can be examined to query further addresses.\n"
+ "%sIt provides %d IP addresses.\n",
+ (int)n_ns, (int)n_miss, (dp->bogus?"It is BOGUS. ":""),
+ (int)n_addr))
+ return;
+}
+
+int print_deleg_lookup(SSL* ssl, struct worker* worker, uint8_t* nm,
+ size_t nmlen, int ATTR_UNUSED(nmlabs))
+{
+ /* deep links into the iterator module */
+ struct delegpt* dp;
+ struct dns_msg* msg;
+ struct regional* region = worker->scratchpad;
+ char b[260];
+ struct query_info qinfo;
+ struct iter_hints_stub* stub;
+ regional_free_all(region);
+ qinfo.qname = nm;
+ qinfo.qname_len = nmlen;
+ qinfo.qtype = LDNS_RR_TYPE_A;
+ qinfo.qclass = LDNS_RR_CLASS_IN;
+
+ dname_str(nm, b);
+ if(!ssl_printf(ssl, "The following name servers are used for lookup "
+ "of %s\n", b))
+ return 0;
+
+ dp = forwards_lookup(worker->env.fwds, nm, qinfo.qclass);
+ if(dp) {
+ if(!ssl_printf(ssl, "forwarding request:\n"))
+ return 0;
+ print_dp_main(ssl, dp, NULL);
+ print_dp_details(ssl, worker, dp);
+ return 1;
+ }
+
+ while(1) {
+ dp = dns_cache_find_delegation(&worker->env, nm, nmlen,
+ qinfo.qtype, qinfo.qclass, region, &msg,
+ *worker->env.now);
+ if(!dp) {
+ return ssl_printf(ssl, "no delegation from "
+ "cache; goes to configured roots\n");
+ }
+ /* go up? */
+ if(iter_dp_is_useless(&qinfo, BIT_RD, dp)) {
+ print_dp_main(ssl, dp, msg);
+ print_dp_details(ssl, worker, dp);
+ if(!ssl_printf(ssl, "cache delegation was "
+ "useless (no IP addresses)\n"))
+ return 0;
+ if(dname_is_root(nm)) {
+ /* goes to root config */
+ return ssl_printf(ssl, "no delegation from "
+ "cache; goes to configured roots\n");
+ } else {
+ /* useless, goes up */
+ nm = dp->name;
+ nmlen = dp->namelen;
+ dname_remove_label(&nm, &nmlen);
+ dname_str(nm, b);
+ if(!ssl_printf(ssl, "going up, lookup %s\n", b))
+ return 0;
+ continue;
+ }
+ }
+ stub = hints_lookup_stub(worker->env.hints, nm, qinfo.qclass,
+ dp);
+ if(stub) {
+ if(stub->noprime) {
+ if(!ssl_printf(ssl, "The noprime stub servers "
+ "are used:\n"))
+ return 0;
+ } else {
+ if(!ssl_printf(ssl, "The stub is primed "
+ "with servers:\n"))
+ return 0;
+ }
+ print_dp_main(ssl, stub->dp, NULL);
+ print_dp_details(ssl, worker, stub->dp);
+ } else {
+ print_dp_main(ssl, dp, msg);
+ print_dp_details(ssl, worker, dp);
+ }
+ break;
+ }
+
+ return 1;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-29 10:58:42 +0000