diff options
author | anonimal <anonimal@i2pmail.org> | 2017-06-28 21:07:24 +0000 |
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committer | anonimal <anonimal@i2pmail.org> | 2018-03-18 15:52:19 +0000 |
commit | 84c5a9ba481d7a33cc0fd0ca43867b61d127d907 (patch) | |
tree | f05d3d3f107da02005b4a61f0e5074c113a7165c /external/unbound/smallapp/unbound-checkconf.c | |
parent | Merge pull request #3416 (diff) | |
download | monero-84c5a9ba481d7a33cc0fd0ca43867b61d127d907.tar.xz |
Unbound: remove unbound from in-tree source
We'll instead use a git submodule to pull from our unbound repo.
Diffstat (limited to 'external/unbound/smallapp/unbound-checkconf.c')
-rw-r--r-- | external/unbound/smallapp/unbound-checkconf.c | 619 |
1 files changed, 0 insertions, 619 deletions
diff --git a/external/unbound/smallapp/unbound-checkconf.c b/external/unbound/smallapp/unbound-checkconf.c deleted file mode 100644 index ddf8b3a75..000000000 --- a/external/unbound/smallapp/unbound-checkconf.c +++ /dev/null @@ -1,619 +0,0 @@ -/* - * checkconf/unbound-checkconf.c - config file checker for unbound.conf file. - * - * 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 - * - * The config checker checks for syntax and other errors in the unbound.conf - * file, and can be used to check for errors before the server is started - * or sigHUPped. - * Exit status 1 means an error. - */ - -#include "config.h" -#include "util/log.h" -#include "util/config_file.h" -#include "util/module.h" -#include "util/net_help.h" -#include "util/regional.h" -#include "iterator/iterator.h" -#include "iterator/iter_fwd.h" -#include "iterator/iter_hints.h" -#include "validator/validator.h" -#include "services/localzone.h" -#include "services/view.h" -#include "respip/respip.h" -#include "sldns/sbuffer.h" -#ifdef HAVE_GETOPT_H -#include <getopt.h> -#endif -#ifdef HAVE_PWD_H -#include <pwd.h> -#endif -#ifdef HAVE_SYS_STAT_H -#include <sys/stat.h> -#endif -#ifdef HAVE_GLOB_H -#include <glob.h> -#endif -#ifdef WITH_PYTHONMODULE -#include "pythonmod/pythonmod.h" -#endif - -/** Give checkconf usage, and exit (1). */ -static void -usage(void) -{ - printf("Usage: unbound-checkconf [file]\n"); - printf(" Checks unbound configuration file for errors.\n"); - printf("file if omitted %s is used.\n", CONFIGFILE); - printf("-o option print value of option to stdout.\n"); - printf("-f output full pathname with chroot applied, eg. with -o pidfile.\n"); - printf("-h show this usage help.\n"); - printf("Version %s\n", PACKAGE_VERSION); - printf("BSD licensed, see LICENSE in source package for details.\n"); - printf("Report bugs to %s\n", PACKAGE_BUGREPORT); - exit(1); -} - -/** - * Print given option to stdout - * @param cfg: config - * @param opt: option name without trailing :. - * This is different from config_set_option. - * @param final: if final pathname with chroot applied has to be printed. - */ -static void -print_option(struct config_file* cfg, const char* opt, int final) -{ - if(strcmp(opt, "pidfile") == 0 && final) { - char *p = fname_after_chroot(cfg->pidfile, cfg, 1); - if(!p) fatal_exit("out of memory"); - printf("%s\n", p); - free(p); - return; - } - if(!config_get_option(cfg, opt, config_print_func, stdout)) - fatal_exit("cannot print option '%s'", opt); -} - -/** check if module works with config */ -static void -check_mod(struct config_file* cfg, struct module_func_block* fb) -{ - struct module_env env; - memset(&env, 0, sizeof(env)); - env.cfg = cfg; - env.scratch = regional_create(); - env.scratch_buffer = sldns_buffer_new(BUFSIZ); - if(!env.scratch || !env.scratch_buffer) - fatal_exit("out of memory"); - if(!edns_known_options_init(&env)) - fatal_exit("out of memory"); - if(!(*fb->init)(&env, 0)) { - fatal_exit("bad config for %s module", fb->name); - } - (*fb->deinit)(&env, 0); - sldns_buffer_free(env.scratch_buffer); - regional_destroy(env.scratch); - edns_known_options_delete(&env); -} - -/** check localzones */ -static void -localzonechecks(struct config_file* cfg) -{ - struct local_zones* zs; - if(!(zs = local_zones_create())) - fatal_exit("out of memory"); - if(!local_zones_apply_cfg(zs, cfg)) - fatal_exit("failed local-zone, local-data configuration"); - local_zones_delete(zs); -} - -/** check view and response-ip configuration */ -static void -view_and_respipchecks(struct config_file* cfg) -{ - struct views* views = NULL; - struct respip_set* respip = NULL; - int ignored = 0; - if(!(views = views_create())) - fatal_exit("Could not create views: out of memory"); - if(!(respip = respip_set_create())) - fatal_exit("Could not create respip set: out of memory"); - if(!views_apply_cfg(views, cfg)) - fatal_exit("Could not set up views"); - if(!respip_global_apply_cfg(respip, cfg)) - fatal_exit("Could not setup respip set"); - if(!respip_views_apply_cfg(views, cfg, &ignored)) - fatal_exit("Could not setup per-view respip sets"); - views_delete(views); - respip_set_delete(respip); -} - -/** emit warnings for IP in hosts */ -static void -warn_hosts(const char* typ, struct config_stub* list) -{ - struct sockaddr_storage a; - socklen_t alen; - struct config_stub* s; - struct config_strlist* h; - for(s=list; s; s=s->next) { - for(h=s->hosts; h; h=h->next) { - if(extstrtoaddr(h->str, &a, &alen)) { - fprintf(stderr, "unbound-checkconf: warning:" - " %s %s: \"%s\" is an IP%s address, " - "and when looked up as a host name " - "during use may not resolve.\n", - s->name, typ, h->str, - addr_is_ip6(&a, alen)?"6":"4"); - } - } - } -} - -/** check interface strings */ -static void -interfacechecks(struct config_file* cfg) -{ - int d; - struct sockaddr_storage a; - socklen_t alen; - int i, j; - for(i=0; i<cfg->num_ifs; i++) { - if(!extstrtoaddr(cfg->ifs[i], &a, &alen)) { - fatal_exit("cannot parse interface specified as '%s'", - cfg->ifs[i]); - } - for(j=0; j<cfg->num_ifs; j++) { - if(i!=j && strcmp(cfg->ifs[i], cfg->ifs[j])==0) - fatal_exit("interface: %s present twice, " - "cannot bind same ports twice.", - cfg->ifs[i]); - } - } - for(i=0; i<cfg->num_out_ifs; i++) { - if(!ipstrtoaddr(cfg->out_ifs[i], UNBOUND_DNS_PORT, &a, &alen) && - !netblockstrtoaddr(cfg->out_ifs[i], UNBOUND_DNS_PORT, &a, &alen, &d)) { - fatal_exit("cannot parse outgoing-interface " - "specified as '%s'", cfg->out_ifs[i]); - } - for(j=0; j<cfg->num_out_ifs; j++) { - if(i!=j && strcmp(cfg->out_ifs[i], cfg->out_ifs[j])==0) - fatal_exit("outgoing-interface: %s present " - "twice, cannot bind same ports twice.", - cfg->out_ifs[i]); - } - } -} - -/** check acl ips */ -static void -aclchecks(struct config_file* cfg) -{ - int d; - struct sockaddr_storage a; - socklen_t alen; - struct config_str2list* acl; - for(acl=cfg->acls; acl; acl = acl->next) { - if(!netblockstrtoaddr(acl->str, UNBOUND_DNS_PORT, &a, &alen, - &d)) { - fatal_exit("cannot parse access control address %s %s", - acl->str, acl->str2); - } - } -} - -/** true if fname is a file */ -static int -is_file(const char* fname) -{ - struct stat buf; - if(stat(fname, &buf) < 0) { - if(errno==EACCES) { - printf("warning: no search permission for one of the directories in path: %s\n", fname); - return 1; - } - perror(fname); - return 0; - } - if(S_ISDIR(buf.st_mode)) { - printf("%s is not a file\n", fname); - return 0; - } - return 1; -} - -/** true if fname is a directory */ -static int -is_dir(const char* fname) -{ - struct stat buf; - if(stat(fname, &buf) < 0) { - if(errno==EACCES) { - printf("warning: no search permission for one of the directories in path: %s\n", fname); - return 1; - } - perror(fname); - return 0; - } - if(!(S_ISDIR(buf.st_mode))) { - printf("%s is not a directory\n", fname); - return 0; - } - return 1; -} - -/** get base dir of a fname */ -static char* -basedir(char* fname) -{ - char* rev; - if(!fname) fatal_exit("out of memory"); - rev = strrchr(fname, '/'); - if(!rev) return NULL; - if(fname == rev) return NULL; - rev[0] = 0; - return fname; -} - -/** check chroot for a file string */ -static void -check_chroot_string(const char* desc, char** ss, - const char* chrootdir, struct config_file* cfg) -{ - char* str = *ss; - if(str && str[0]) { - *ss = fname_after_chroot(str, cfg, 1); - if(!*ss) fatal_exit("out of memory"); - if(!is_file(*ss)) { - if(chrootdir && chrootdir[0]) - fatal_exit("%s: \"%s\" does not exist in " - "chrootdir %s", desc, str, chrootdir); - else - fatal_exit("%s: \"%s\" does not exist", - desc, str); - } - /* put in a new full path for continued checking */ - free(str); - } -} - -/** check file list, every file must be inside the chroot location */ -static void -check_chroot_filelist(const char* desc, struct config_strlist* list, - const char* chrootdir, struct config_file* cfg) -{ - struct config_strlist* p; - for(p=list; p; p=p->next) { - check_chroot_string(desc, &p->str, chrootdir, cfg); - } -} - -/** check file list, with wildcard processing */ -static void -check_chroot_filelist_wild(const char* desc, struct config_strlist* list, - const char* chrootdir, struct config_file* cfg) -{ - struct config_strlist* p; - for(p=list; p; p=p->next) { -#ifdef HAVE_GLOB - if(strchr(p->str, '*') || strchr(p->str, '[') || - strchr(p->str, '?') || strchr(p->str, '{') || - strchr(p->str, '~')) { - char* s = p->str; - /* adjust whole pattern for chroot and check later */ - p->str = fname_after_chroot(p->str, cfg, 1); - free(s); - } else -#endif /* HAVE_GLOB */ - check_chroot_string(desc, &p->str, chrootdir, cfg); - } -} - -/** check configuration for errors */ -static void -morechecks(struct config_file* cfg, const char* fname) -{ - warn_hosts("stub-host", cfg->stubs); - warn_hosts("forward-host", cfg->forwards); - interfacechecks(cfg); - aclchecks(cfg); - - if(cfg->verbosity < 0) - fatal_exit("verbosity value < 0"); - if(cfg->num_threads <= 0 || cfg->num_threads > 10000) - fatal_exit("num_threads value weird"); - if(!cfg->do_ip4 && !cfg->do_ip6) - fatal_exit("ip4 and ip6 are both disabled, pointless"); - if(!cfg->do_ip6 && cfg->prefer_ip6) - fatal_exit("cannot prefer and disable ip6, pointless"); - if(!cfg->do_udp && !cfg->do_tcp) - fatal_exit("udp and tcp are both disabled, pointless"); - if(cfg->edns_buffer_size > cfg->msg_buffer_size) - fatal_exit("edns-buffer-size larger than msg-buffer-size, " - "answers will not fit in processing buffer"); -#ifdef UB_ON_WINDOWS - w_config_adjust_directory(cfg); -#endif - if(cfg->chrootdir && cfg->chrootdir[0] && - cfg->chrootdir[strlen(cfg->chrootdir)-1] == '/') - fatal_exit("chootdir %s has trailing slash '/' please remove.", - cfg->chrootdir); - if(cfg->chrootdir && cfg->chrootdir[0] && - !is_dir(cfg->chrootdir)) { - fatal_exit("bad chroot directory"); - } - if(cfg->chrootdir && cfg->chrootdir[0]) { - char buf[10240]; - buf[0] = 0; - if(fname[0] != '/') { - if(getcwd(buf, sizeof(buf)) == NULL) - fatal_exit("getcwd: %s", strerror(errno)); - (void)strlcat(buf, "/", sizeof(buf)); - } - (void)strlcat(buf, fname, sizeof(buf)); - if(strncmp(buf, cfg->chrootdir, strlen(cfg->chrootdir)) != 0) - fatal_exit("config file %s is not inside chroot %s", - buf, cfg->chrootdir); - } - if(cfg->directory && cfg->directory[0]) { - char* ad = fname_after_chroot(cfg->directory, cfg, 0); - if(!ad) fatal_exit("out of memory"); - if(!is_dir(ad)) fatal_exit("bad chdir directory"); - free(ad); - } - if( (cfg->chrootdir && cfg->chrootdir[0]) || - (cfg->directory && cfg->directory[0])) { - if(cfg->pidfile && cfg->pidfile[0]) { - char* ad = (cfg->pidfile[0]=='/')?strdup(cfg->pidfile): - fname_after_chroot(cfg->pidfile, cfg, 1); - char* bd = basedir(ad); - if(bd && !is_dir(bd)) - fatal_exit("pidfile directory does not exist"); - free(ad); - } - if(cfg->logfile && cfg->logfile[0]) { - char* ad = fname_after_chroot(cfg->logfile, cfg, 1); - char* bd = basedir(ad); - if(bd && !is_dir(bd)) - fatal_exit("logfile directory does not exist"); - free(ad); - } - } - - check_chroot_filelist("file with root-hints", - cfg->root_hints, cfg->chrootdir, cfg); - check_chroot_filelist("trust-anchor-file", - cfg->trust_anchor_file_list, cfg->chrootdir, cfg); - check_chroot_filelist("auto-trust-anchor-file", - cfg->auto_trust_anchor_file_list, cfg->chrootdir, cfg); - check_chroot_filelist_wild("trusted-keys-file", - cfg->trusted_keys_file_list, cfg->chrootdir, cfg); - check_chroot_string("dlv-anchor-file", &cfg->dlv_anchor_file, - cfg->chrootdir, cfg); - /* remove chroot setting so that modules are not stripping pathnames*/ - free(cfg->chrootdir); - cfg->chrootdir = NULL; - - /* There should be no reason for 'respip' module not to work with - * dns64, but it's not explicitly confirmed, so the combination is - * excluded below. It's simply unknown yet for the combination of - * respip and other modules. */ - if(strcmp(cfg->module_conf, "iterator") != 0 - && strcmp(cfg->module_conf, "validator iterator") != 0 - && strcmp(cfg->module_conf, "dns64 validator iterator") != 0 - && strcmp(cfg->module_conf, "dns64 iterator") != 0 - && strcmp(cfg->module_conf, "respip iterator") != 0 - && strcmp(cfg->module_conf, "respip validator iterator") != 0 -#ifdef WITH_PYTHONMODULE - && strcmp(cfg->module_conf, "python iterator") != 0 - && strcmp(cfg->module_conf, "python validator iterator") != 0 - && strcmp(cfg->module_conf, "validator python iterator") != 0 - && strcmp(cfg->module_conf, "dns64 python iterator") != 0 - && strcmp(cfg->module_conf, "dns64 python validator iterator") != 0 - && strcmp(cfg->module_conf, "dns64 validator python iterator") != 0 - && strcmp(cfg->module_conf, "python dns64 iterator") != 0 - && strcmp(cfg->module_conf, "python dns64 validator iterator") != 0 -#endif -#ifdef USE_CACHEDB - && strcmp(cfg->module_conf, "validator cachedb iterator") != 0 - && strcmp(cfg->module_conf, "cachedb iterator") != 0 - && strcmp(cfg->module_conf, "dns64 validator cachedb iterator") != 0 - && strcmp(cfg->module_conf, "dns64 cachedb iterator") != 0 -#endif -#if defined(WITH_PYTHONMODULE) && defined(USE_CACHEDB) - && strcmp(cfg->module_conf, "python dns64 cachedb iterator") != 0 - && strcmp(cfg->module_conf, "python dns64 validator cachedb iterator") != 0 - && strcmp(cfg->module_conf, "dns64 python cachedb iterator") != 0 - && strcmp(cfg->module_conf, "dns64 python validator cachedb iterator") != 0 - && strcmp(cfg->module_conf, "python cachedb iterator") != 0 - && strcmp(cfg->module_conf, "python validator cachedb iterator") != 0 - && strcmp(cfg->module_conf, "cachedb python iterator") != 0 - && strcmp(cfg->module_conf, "validator cachedb python iterator") != 0 - && strcmp(cfg->module_conf, "validator python cachedb iterator") != 0 -#endif -#ifdef CLIENT_SUBNET - && strcmp(cfg->module_conf, "subnetcache iterator") != 0 - && strcmp(cfg->module_conf, "subnetcache validator iterator") != 0 -#endif -#if defined(WITH_PYTHONMODULE) && defined(CLIENT_SUBNET) - && strcmp(cfg->module_conf, "python subnetcache iterator") != 0 - && strcmp(cfg->module_conf, "subnetcache python iterator") != 0 - && strcmp(cfg->module_conf, "subnetcache validator iterator") != 0 - && strcmp(cfg->module_conf, "python subnetcache validator iterator") != 0 - && strcmp(cfg->module_conf, "subnetcache python validator iterator") != 0 - && strcmp(cfg->module_conf, "subnetcache validator python iterator") != 0 -#endif - ) { - fatal_exit("module conf '%s' is not known to work", - cfg->module_conf); - } - -#ifdef HAVE_GETPWNAM - if(cfg->username && cfg->username[0]) { - if(getpwnam(cfg->username) == NULL) - fatal_exit("user '%s' does not exist.", cfg->username); -# ifdef HAVE_ENDPWENT - endpwent(); -# endif - } -#endif - if(cfg->remote_control_enable && cfg->remote_control_use_cert) { - check_chroot_string("server-key-file", &cfg->server_key_file, - cfg->chrootdir, cfg); - check_chroot_string("server-cert-file", &cfg->server_cert_file, - cfg->chrootdir, cfg); - if(!is_file(cfg->control_key_file)) - fatal_exit("control-key-file: \"%s\" does not exist", - cfg->control_key_file); - if(!is_file(cfg->control_cert_file)) - fatal_exit("control-cert-file: \"%s\" does not exist", - cfg->control_cert_file); - } - - localzonechecks(cfg); - view_and_respipchecks(cfg); -} - -/** check forwards */ -static void -check_fwd(struct config_file* cfg) -{ - struct iter_forwards* fwd = forwards_create(); - if(!fwd || !forwards_apply_cfg(fwd, cfg)) { - fatal_exit("Could not set forward zones"); - } - forwards_delete(fwd); -} - -/** check hints */ -static void -check_hints(struct config_file* cfg) -{ - struct iter_hints* hints = hints_create(); - if(!hints || !hints_apply_cfg(hints, cfg)) { - fatal_exit("Could not set root or stub hints"); - } - hints_delete(hints); -} - -/** check config file */ -static void -checkconf(const char* cfgfile, const char* opt, int final) -{ - char oldwd[4096]; - struct config_file* cfg = config_create(); - if(!cfg) - fatal_exit("out of memory"); - oldwd[0] = 0; - if(!getcwd(oldwd, sizeof(oldwd))) { - log_err("cannot getcwd: %s", strerror(errno)); - oldwd[0] = 0; - } - if(!config_read(cfg, cfgfile, NULL)) { - /* config_read prints messages to stderr */ - config_delete(cfg); - exit(1); - } - if(oldwd[0] && chdir(oldwd) == -1) - log_err("cannot chdir(%s): %s", oldwd, strerror(errno)); - if(opt) { - print_option(cfg, opt, final); - config_delete(cfg); - return; - } - morechecks(cfg, cfgfile); - check_mod(cfg, iter_get_funcblock()); - check_mod(cfg, val_get_funcblock()); -#ifdef WITH_PYTHONMODULE - if(strstr(cfg->module_conf, "python")) - check_mod(cfg, pythonmod_get_funcblock()); -#endif - check_fwd(cfg); - check_hints(cfg); - printf("unbound-checkconf: no errors in %s\n", cfgfile); - config_delete(cfg); -} - -/** getopt global, in case header files fail to declare it. */ -extern int optind; -/** getopt global, in case header files fail to declare it. */ -extern char* optarg; - -/** Main routine for checkconf */ -int main(int argc, char* argv[]) -{ - int c; - int final = 0; - const char* f; - const char* opt = NULL; - const char* cfgfile = CONFIGFILE; - log_ident_set("unbound-checkconf"); - log_init(NULL, 0, NULL); - checklock_start(); -#ifdef USE_WINSOCK - /* use registry config file in preference to compiletime location */ - if(!(cfgfile=w_lookup_reg_str("Software\\Unbound", "ConfigFile"))) - cfgfile = CONFIGFILE; -#endif /* USE_WINSOCK */ - /* parse the options */ - while( (c=getopt(argc, argv, "fho:")) != -1) { - switch(c) { - case 'f': - final = 1; - break; - case 'o': - opt = optarg; - break; - case '?': - case 'h': - default: - usage(); - } - } - argc -= optind; - argv += optind; - if(argc != 0 && argc != 1) - usage(); - if(argc == 1) - f = argv[0]; - else f = cfgfile; - checkconf(f, opt, final); - checklock_stop(); - return 0; -} |