/* * smallapp/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 #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 "services/authzone.h" #include "respip/respip.h" #include "sldns/sbuffer.h" #include "sldns/str2wire.h" #ifdef HAVE_GETOPT_H #include #endif #ifdef HAVE_PWD_H #include #endif #ifdef HAVE_SYS_STAT_H #include #endif #ifdef HAVE_GLOB_H #include #endif #ifdef WITH_PYTHONMODULE #include "pythonmod/pythonmod.h" #endif #ifdef CLIENT_SUBNET #include "edns-subnet/subnet-whitelist.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(strcmp(opt, "auto-trust-anchor-file") == 0 && final) { struct config_strlist* s = cfg->auto_trust_anchor_file_list; for(; s; s=s->next) { char *p = fname_after_chroot(s->str, 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); } /** true if addr is a localhost address, 127.0.0.1 or ::1 (with maybe "@port" * after it) */ static int str_addr_is_localhost(const char* a) { if(strncmp(a, "127.", 4) == 0) return 1; if(strncmp(a, "::1", 3) == 0) return 1; return 0; } /** check do-not-query-localhost */ static void donotquerylocalhostcheck(struct config_file* cfg) { if(cfg->donotquery_localhost) { struct config_stub* p; struct config_strlist* s; for(p=cfg->forwards; p; p=p->next) { for(s=p->addrs; s; s=s->next) { if(str_addr_is_localhost(s->str)) { fprintf(stderr, "unbound-checkconf: warning: forward-addr: '%s' is specified for forward-zone: '%s', but do-not-query-localhost: yes means that the address will not be used for lookups.\n", s->str, p->name); } } } for(p=cfg->stubs; p; p=p->next) { for(s=p->addrs; s; s=s->next) { if(str_addr_is_localhost(s->str)) { fprintf(stderr, "unbound-checkconf: warning: stub-addr: '%s' is specified for stub-zone: '%s', but do-not-query-localhost: yes means that the address will not be used for lookups.\n", s->str, p->name); } } } } } /** 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); } /** checks for acl and views */ static void acl_view_tag_checks(struct config_file* cfg, struct views* views) { int d; struct sockaddr_storage a; socklen_t alen; struct config_str2list* acl; struct config_str3list* s3; struct config_strbytelist* sb; /* acl_view */ for(acl=cfg->acl_view; acl; acl = acl->next) { struct view* v; if(!netblockstrtoaddr(acl->str, UNBOUND_DNS_PORT, &a, &alen, &d)) { fatal_exit("cannot parse access-control-view " "address %s %s", acl->str, acl->str2); } v = views_find_view(views, acl->str2, 0); if(!v) { fatal_exit("cannot find view for " "access-control-view: %s %s", acl->str, acl->str2); } lock_rw_unlock(&v->lock); } /* acl_tags */ for(sb=cfg->acl_tags; sb; sb = sb->next) { if(!netblockstrtoaddr(sb->str, UNBOUND_DNS_PORT, &a, &alen, &d)) { fatal_exit("cannot parse access-control-tags " "address %s", sb->str); } } /* acl_tag_actions */ for(s3=cfg->acl_tag_actions; s3; s3 = s3->next) { enum localzone_type t; if(!netblockstrtoaddr(s3->str, UNBOUND_DNS_PORT, &a, &alen, &d)) { fatal_exit("cannot parse access-control-tag-actions " "address %s %s %s", s3->str, s3->str2, s3->str3); } if(find_tag_id(cfg, s3->str2) == -1) { fatal_exit("cannot parse tag %s (define-tag it), " "for access-control-tag-actions: %s %s %s", s3->str2, s3->str, s3->str2, s3->str3); } if(!local_zone_str2type(s3->str3, &t)) { fatal_exit("cannot parse access control action type %s" " for access-control-tag-actions: %s %s %s", s3->str3, s3->str, s3->str2, s3->str3); } } /* acl_tag_datas */ for(s3=cfg->acl_tag_datas; s3; s3 = s3->next) { char buf[65536]; uint8_t rr[LDNS_RR_BUF_SIZE]; size_t len = sizeof(rr); int res; if(!netblockstrtoaddr(s3->str, UNBOUND_DNS_PORT, &a, &alen, &d)) { fatal_exit("cannot parse access-control-tag-datas address %s %s '%s'", s3->str, s3->str2, s3->str3); } if(find_tag_id(cfg, s3->str2) == -1) { fatal_exit("cannot parse tag %s (define-tag it), " "for access-control-tag-datas: %s %s '%s'", s3->str2, s3->str, s3->str2, s3->str3); } /* '.' is sufficient for validation, and it makes the call to * sldns_wirerr_get_type() simpler below. */ snprintf(buf, sizeof(buf), "%s %s", ".", s3->str3); res = sldns_str2wire_rr_buf(buf, rr, &len, NULL, 3600, NULL, 0, NULL, 0); if(res != 0) { fatal_exit("cannot parse rr data [char %d] parse error %s, for access-control-tag-datas: %s %s '%s'", (int)LDNS_WIREPARSE_OFFSET(res)-2, sldns_get_errorstr_parse(res), s3->str, s3->str2, s3->str3); } } } /** 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"); acl_view_tag_checks(cfg, views); 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; inum_ifs; i++) { if(!extstrtoaddr(cfg->ifs[i], &a, &alen)) { fatal_exit("cannot parse interface specified as '%s'", cfg->ifs[i]); } for(j=0; jnum_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; inum_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; jnum_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); } } } /** check tcp connection limit ips */ static void tcpconnlimitchecks(struct config_file* cfg) { int d; struct sockaddr_storage a; socklen_t alen; struct config_str2list* tcl; for(tcl=cfg->tcp_connection_limits; tcl; tcl = tcl->next) { if(!netblockstrtoaddr(tcl->str, UNBOUND_DNS_PORT, &a, &alen, &d)) { fatal_exit("cannot parse tcp connection limit address %s %s", tcl->str, tcl->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); } } #ifdef CLIENT_SUBNET /** check ECS configuration */ static void ecs_conf_checks(struct config_file* cfg) { struct ecs_whitelist* whitelist = NULL; if(!(whitelist = ecs_whitelist_create())) fatal_exit("Could not create ednssubnet whitelist: out of memory"); if(!ecs_whitelist_apply_cfg(whitelist, cfg)) fatal_exit("Could not setup ednssubnet whitelist"); ecs_whitelist_delete(whitelist); } #endif /* CLIENT_SUBNET */ /** check that the modules exist, are compiled in */ static void check_modules_exist(const char* module_conf) { const char** names = module_list_avail(); const char* s = module_conf; while(*s) { int i = 0; int is_ok = 0; while(*s && isspace((unsigned char)*s)) s++; if(!*s) break; while(names[i]) { if(strncmp(names[i], s, strlen(names[i])) == 0) { is_ok = 1; break; } i++; } if(is_ok == 0) { char n[64]; size_t j; n[0]=0; n[sizeof(n)-1]=0; for(j=0; jstubs); warn_hosts("forward-host", cfg->forwards); interfacechecks(cfg); aclchecks(cfg); tcpconnlimitchecks(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_ip4 && cfg->prefer_ip4) fatal_exit("cannot prefer and disable ip4, 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->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); #ifdef USE_IPSECMOD if(cfg->ipsecmod_enabled && strstr(cfg->module_conf, "ipsecmod")) { /* only check hook if enabled */ check_chroot_string("ipsecmod-hook", &cfg->ipsecmod_hook, cfg->chrootdir, cfg); } #endif /* remove chroot setting so that modules are not stripping pathnames*/ free(cfg->chrootdir); cfg->chrootdir = NULL; /* check that the modules listed in module_conf exist */ check_modules_exist(cfg->module_conf); /* Respip is known to *not* work with dns64. */ 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 respip iterator") != 0 && strcmp(cfg->module_conf, "python validator iterator") != 0 && strcmp(cfg->module_conf, "python respip 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 WITH_DYNLIBMODULE && strcmp(cfg->module_conf, "dynlib iterator") != 0 && strcmp(cfg->module_conf, "dynlib dynlib iterator") != 0 && strcmp(cfg->module_conf, "dynlib dynlib dynlib iterator") != 0 && strcmp(cfg->module_conf, "python dynlib iterator") != 0 && strcmp(cfg->module_conf, "python dynlib dynlib iterator") != 0 && strcmp(cfg->module_conf, "python dynlib dynlib dynlib iterator") != 0 && strcmp(cfg->module_conf, "dynlib respip iterator") != 0 && strcmp(cfg->module_conf, "dynlib validator iterator") != 0 && strcmp(cfg->module_conf, "dynlib dynlib validator iterator") != 0 && strcmp(cfg->module_conf, "dynlib dynlib dynlib validator iterator") != 0 && strcmp(cfg->module_conf, "python dynlib validator iterator") != 0 && strcmp(cfg->module_conf, "python dynlib dynlib validator iterator") != 0 && strcmp(cfg->module_conf, "python dynlib dynlib dynlib validator iterator") != 0 && strcmp(cfg->module_conf, "dynlib respip validator iterator") != 0 && strcmp(cfg->module_conf, "validator dynlib iterator") != 0 && strcmp(cfg->module_conf, "dns64 dynlib iterator") != 0 && strcmp(cfg->module_conf, "dns64 dynlib validator iterator") != 0 && strcmp(cfg->module_conf, "dns64 validator dynlib iterator") != 0 && strcmp(cfg->module_conf, "dynlib dns64 iterator") != 0 && strcmp(cfg->module_conf, "dynlib dns64 validator iterator") != 0 && strcmp(cfg->module_conf, "dynlib dns64 cachedb iterator") != 0 && strcmp(cfg->module_conf, "dynlib dns64 validator cachedb iterator") != 0 && strcmp(cfg->module_conf, "dns64 dynlib cachedb iterator") != 0 && strcmp(cfg->module_conf, "dns64 dynlib validator cachedb iterator") != 0 && strcmp(cfg->module_conf, "dynlib cachedb iterator") != 0 && strcmp(cfg->module_conf, "dynlib respip cachedb iterator") != 0 && strcmp(cfg->module_conf, "dynlib validator cachedb iterator") != 0 && strcmp(cfg->module_conf, "dynlib respip validator cachedb iterator") != 0 && strcmp(cfg->module_conf, "cachedb dynlib iterator") != 0 && strcmp(cfg->module_conf, "respip cachedb dynlib iterator") != 0 && strcmp(cfg->module_conf, "validator cachedb dynlib iterator") != 0 && strcmp(cfg->module_conf, "respip validator cachedb dynlib iterator") != 0 && strcmp(cfg->module_conf, "validator dynlib cachedb iterator") != 0 && strcmp(cfg->module_conf, "respip validator dynlib cachedb iterator") != 0 && strcmp(cfg->module_conf, "dynlib subnetcache iterator") != 0 && strcmp(cfg->module_conf, "dynlib respip subnetcache iterator") != 0 && strcmp(cfg->module_conf, "subnetcache dynlib iterator") != 0 && strcmp(cfg->module_conf, "respip subnetcache dynlib iterator") != 0 && strcmp(cfg->module_conf, "dynlib subnetcache validator iterator") != 0 && strcmp(cfg->module_conf, "dynlib respip subnetcache validator iterator") != 0 && strcmp(cfg->module_conf, "subnetcache dynlib validator iterator") != 0 && strcmp(cfg->module_conf, "respip subnetcache dynlib validator iterator") != 0 && strcmp(cfg->module_conf, "subnetcache validator dynlib iterator") != 0 && strcmp(cfg->module_conf, "respip subnetcache validator dynlib iterator") != 0 && strcmp(cfg->module_conf, "dynlib ipsecmod iterator") != 0 && strcmp(cfg->module_conf, "dynlib ipsecmod respip iterator") != 0 && strcmp(cfg->module_conf, "ipsecmod dynlib iterator") != 0 && strcmp(cfg->module_conf, "ipsecmod dynlib respip iterator") != 0 && strcmp(cfg->module_conf, "ipsecmod validator iterator") != 0 && strcmp(cfg->module_conf, "ipsecmod respip validator iterator") != 0 && strcmp(cfg->module_conf, "dynlib ipsecmod validator iterator") != 0 && strcmp(cfg->module_conf, "dynlib ipsecmod respip validator iterator") != 0 && strcmp(cfg->module_conf, "ipsecmod dynlib validator iterator") != 0 && strcmp(cfg->module_conf, "ipsecmod dynlib respip validator iterator") != 0 && strcmp(cfg->module_conf, "ipsecmod validator dynlib iterator") != 0 && strcmp(cfg->module_conf, "ipsecmod respip validator dynlib iterator") != 0 #endif #ifdef USE_CACHEDB && strcmp(cfg->module_conf, "validator cachedb iterator") != 0 && strcmp(cfg->module_conf, "respip validator cachedb iterator") != 0 && strcmp(cfg->module_conf, "cachedb iterator") != 0 && strcmp(cfg->module_conf, "respip 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 respip cachedb iterator") != 0 && strcmp(cfg->module_conf, "python validator cachedb iterator") != 0 && strcmp(cfg->module_conf, "python respip validator cachedb iterator") != 0 && strcmp(cfg->module_conf, "cachedb python iterator") != 0 && strcmp(cfg->module_conf, "respip cachedb python iterator") != 0 && strcmp(cfg->module_conf, "validator cachedb python iterator") != 0 && strcmp(cfg->module_conf, "respip validator cachedb python iterator") != 0 && strcmp(cfg->module_conf, "validator python cachedb iterator") != 0 && strcmp(cfg->module_conf, "respip validator python cachedb iterator") != 0 #endif #ifdef CLIENT_SUBNET && strcmp(cfg->module_conf, "subnetcache iterator") != 0 && strcmp(cfg->module_conf, "respip subnetcache iterator") != 0 && strcmp(cfg->module_conf, "subnetcache validator iterator") != 0 && strcmp(cfg->module_conf, "respip subnetcache validator iterator") != 0 && strcmp(cfg->module_conf, "dns64 subnetcache iterator") != 0 && strcmp(cfg->module_conf, "dns64 subnetcache validator iterator") != 0 && strcmp(cfg->module_conf, "dns64 subnetcache respip iterator") != 0 && strcmp(cfg->module_conf, "dns64 subnetcache respip validator iterator") != 0 #endif #if defined(WITH_PYTHONMODULE) && defined(CLIENT_SUBNET) && strcmp(cfg->module_conf, "python subnetcache iterator") != 0 && strcmp(cfg->module_conf, "python respip subnetcache iterator") != 0 && strcmp(cfg->module_conf, "subnetcache python iterator") != 0 && strcmp(cfg->module_conf, "respip subnetcache python iterator") != 0 && strcmp(cfg->module_conf, "python subnetcache validator iterator") != 0 && strcmp(cfg->module_conf, "python respip subnetcache validator iterator") != 0 && strcmp(cfg->module_conf, "subnetcache python validator iterator") != 0 && strcmp(cfg->module_conf, "respip subnetcache python validator iterator") != 0 && strcmp(cfg->module_conf, "subnetcache validator python iterator") != 0 && strcmp(cfg->module_conf, "respip subnetcache validator python iterator") != 0 #endif #ifdef USE_IPSECMOD && strcmp(cfg->module_conf, "ipsecmod iterator") != 0 && strcmp(cfg->module_conf, "ipsecmod respip iterator") != 0 && strcmp(cfg->module_conf, "ipsecmod validator iterator") != 0 && strcmp(cfg->module_conf, "ipsecmod respip validator iterator") != 0 #endif #if defined(WITH_PYTHONMODULE) && defined(USE_IPSECMOD) && strcmp(cfg->module_conf, "python ipsecmod iterator") != 0 && strcmp(cfg->module_conf, "python ipsecmod respip iterator") != 0 && strcmp(cfg->module_conf, "ipsecmod python iterator") != 0 && strcmp(cfg->module_conf, "ipsecmod python respip iterator") != 0 && strcmp(cfg->module_conf, "ipsecmod validator iterator") != 0 && strcmp(cfg->module_conf, "ipsecmod respip validator iterator") != 0 && strcmp(cfg->module_conf, "python ipsecmod validator iterator") != 0 && strcmp(cfg->module_conf, "python ipsecmod respip validator iterator") != 0 && strcmp(cfg->module_conf, "ipsecmod python validator iterator") != 0 && strcmp(cfg->module_conf, "ipsecmod python respip validator iterator") != 0 && strcmp(cfg->module_conf, "ipsecmod validator python iterator") != 0 && strcmp(cfg->module_conf, "ipsecmod respip validator python iterator") != 0 #endif #ifdef USE_IPSET && strcmp(cfg->module_conf, "validator ipset iterator") != 0 && strcmp(cfg->module_conf, "validator ipset respip iterator") != 0 && strcmp(cfg->module_conf, "ipset iterator") != 0 && strcmp(cfg->module_conf, "ipset respip 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 } if (pledge("stdio rpath", NULL) == -1) fatal_exit("Could not pledge"); #endif if(cfg->remote_control_enable && options_remote_is_address(cfg) && cfg->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); } donotquerylocalhostcheck(cfg); localzonechecks(cfg); view_and_respipchecks(cfg); #ifdef CLIENT_SUBNET ecs_conf_checks(cfg); #endif } /** 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 auth zones */ static void check_auth(struct config_file* cfg) { int is_rpz = 0; struct auth_zones* az = auth_zones_create(); if(!az || !auth_zones_apply_cfg(az, cfg, 0, &is_rpz, NULL, NULL)) { fatal_exit("Could not setup authority zones"); } auth_zones_delete(az); } /** 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); 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); check_auth(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; if (pledge("stdio rpath getpw", NULL) == -1) fatal_exit("Could not pledge"); checkconf(f, opt, final); checklock_stop(); return 0; }