1 /* 2 * checkconf/unbound-checkconf.c - config file checker for unbound.conf file. 3 * 4 * Copyright (c) 2007, NLnet Labs. All rights reserved. 5 * 6 * This software is open source. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 12 * Redistributions of source code must retain the above copyright notice, 13 * this list of conditions and the following disclaimer. 14 * 15 * Redistributions in binary form must reproduce the above copyright notice, 16 * this list of conditions and the following disclaimer in the documentation 17 * and/or other materials provided with the distribution. 18 * 19 * Neither the name of the NLNET LABS nor the names of its contributors may 20 * be used to endorse or promote products derived from this software without 21 * specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 24 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 25 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 26 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 27 * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 28 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED 29 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 30 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 31 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 32 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 33 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 34 */ 35 36 /** 37 * \file 38 * 39 * The config checker checks for syntax and other errors in the unbound.conf 40 * file, and can be used to check for errors before the server is started 41 * or sigHUPped. 42 * Exit status 1 means an error. 43 */ 44 45 #include "config.h" 46 #include "util/log.h" 47 #include "util/config_file.h" 48 #include "util/module.h" 49 #include "util/net_help.h" 50 #include "util/regional.h" 51 #include "iterator/iterator.h" 52 #include "iterator/iter_fwd.h" 53 #include "iterator/iter_hints.h" 54 #include "validator/validator.h" 55 #include "services/localzone.h" 56 #include "services/view.h" 57 #include "services/authzone.h" 58 #include "respip/respip.h" 59 #include "sldns/sbuffer.h" 60 #ifdef HAVE_GETOPT_H 61 #include <getopt.h> 62 #endif 63 #ifdef HAVE_PWD_H 64 #include <pwd.h> 65 #endif 66 #ifdef HAVE_SYS_STAT_H 67 #include <sys/stat.h> 68 #endif 69 #ifdef HAVE_GLOB_H 70 #include <glob.h> 71 #endif 72 #ifdef WITH_PYTHONMODULE 73 #include "pythonmod/pythonmod.h" 74 #endif 75 #ifdef CLIENT_SUBNET 76 #include "edns-subnet/subnet-whitelist.h" 77 #endif 78 79 /** Give checkconf usage, and exit (1). */ 80 static void 81 usage(void) 82 { 83 printf("Usage: local-unbound-checkconf [file]\n"); 84 printf(" Checks unbound configuration file for errors.\n"); 85 printf("file if omitted %s is used.\n", CONFIGFILE); 86 printf("-o option print value of option to stdout.\n"); 87 printf("-f output full pathname with chroot applied, eg. with -o pidfile.\n"); 88 printf("-h show this usage help.\n"); 89 printf("Version %s\n", PACKAGE_VERSION); 90 printf("BSD licensed, see LICENSE in source package for details.\n"); 91 printf("Report bugs to %s\n", PACKAGE_BUGREPORT); 92 exit(1); 93 } 94 95 /** 96 * Print given option to stdout 97 * @param cfg: config 98 * @param opt: option name without trailing :. 99 * This is different from config_set_option. 100 * @param final: if final pathname with chroot applied has to be printed. 101 */ 102 static void 103 print_option(struct config_file* cfg, const char* opt, int final) 104 { 105 if(strcmp(opt, "pidfile") == 0 && final) { 106 char *p = fname_after_chroot(cfg->pidfile, cfg, 1); 107 if(!p) fatal_exit("out of memory"); 108 printf("%s\n", p); 109 free(p); 110 return; 111 } 112 if(strcmp(opt, "auto-trust-anchor-file") == 0 && final) { 113 struct config_strlist* s = cfg->auto_trust_anchor_file_list; 114 for(; s; s=s->next) { 115 char *p = fname_after_chroot(s->str, cfg, 1); 116 if(!p) fatal_exit("out of memory"); 117 printf("%s\n", p); 118 free(p); 119 } 120 return; 121 } 122 if(!config_get_option(cfg, opt, config_print_func, stdout)) 123 fatal_exit("cannot print option '%s'", opt); 124 } 125 126 /** check if module works with config */ 127 static void 128 check_mod(struct config_file* cfg, struct module_func_block* fb) 129 { 130 struct module_env env; 131 memset(&env, 0, sizeof(env)); 132 env.cfg = cfg; 133 env.scratch = regional_create(); 134 env.scratch_buffer = sldns_buffer_new(BUFSIZ); 135 if(!env.scratch || !env.scratch_buffer) 136 fatal_exit("out of memory"); 137 if(!edns_known_options_init(&env)) 138 fatal_exit("out of memory"); 139 if(!(*fb->init)(&env, 0)) { 140 fatal_exit("bad config for %s module", fb->name); 141 } 142 (*fb->deinit)(&env, 0); 143 sldns_buffer_free(env.scratch_buffer); 144 regional_destroy(env.scratch); 145 edns_known_options_delete(&env); 146 } 147 148 /** check localzones */ 149 static void 150 localzonechecks(struct config_file* cfg) 151 { 152 struct local_zones* zs; 153 if(!(zs = local_zones_create())) 154 fatal_exit("out of memory"); 155 if(!local_zones_apply_cfg(zs, cfg)) 156 fatal_exit("failed local-zone, local-data configuration"); 157 local_zones_delete(zs); 158 } 159 160 /** check view and response-ip configuration */ 161 static void 162 view_and_respipchecks(struct config_file* cfg) 163 { 164 struct views* views = NULL; 165 struct respip_set* respip = NULL; 166 int ignored = 0; 167 if(!(views = views_create())) 168 fatal_exit("Could not create views: out of memory"); 169 if(!(respip = respip_set_create())) 170 fatal_exit("Could not create respip set: out of memory"); 171 if(!views_apply_cfg(views, cfg)) 172 fatal_exit("Could not set up views"); 173 if(!respip_global_apply_cfg(respip, cfg)) 174 fatal_exit("Could not setup respip set"); 175 if(!respip_views_apply_cfg(views, cfg, &ignored)) 176 fatal_exit("Could not setup per-view respip sets"); 177 views_delete(views); 178 respip_set_delete(respip); 179 } 180 181 /** emit warnings for IP in hosts */ 182 static void 183 warn_hosts(const char* typ, struct config_stub* list) 184 { 185 struct sockaddr_storage a; 186 socklen_t alen; 187 struct config_stub* s; 188 struct config_strlist* h; 189 for(s=list; s; s=s->next) { 190 for(h=s->hosts; h; h=h->next) { 191 if(extstrtoaddr(h->str, &a, &alen)) { 192 fprintf(stderr, "unbound-checkconf: warning:" 193 " %s %s: \"%s\" is an IP%s address, " 194 "and when looked up as a host name " 195 "during use may not resolve.\n", 196 s->name, typ, h->str, 197 addr_is_ip6(&a, alen)?"6":"4"); 198 } 199 } 200 } 201 } 202 203 /** check interface strings */ 204 static void 205 interfacechecks(struct config_file* cfg) 206 { 207 int d; 208 struct sockaddr_storage a; 209 socklen_t alen; 210 int i, j; 211 for(i=0; i<cfg->num_ifs; i++) { 212 if(!extstrtoaddr(cfg->ifs[i], &a, &alen)) { 213 fatal_exit("cannot parse interface specified as '%s'", 214 cfg->ifs[i]); 215 } 216 for(j=0; j<cfg->num_ifs; j++) { 217 if(i!=j && strcmp(cfg->ifs[i], cfg->ifs[j])==0) 218 fatal_exit("interface: %s present twice, " 219 "cannot bind same ports twice.", 220 cfg->ifs[i]); 221 } 222 } 223 for(i=0; i<cfg->num_out_ifs; i++) { 224 if(!ipstrtoaddr(cfg->out_ifs[i], UNBOUND_DNS_PORT, &a, &alen) && 225 !netblockstrtoaddr(cfg->out_ifs[i], UNBOUND_DNS_PORT, &a, &alen, &d)) { 226 fatal_exit("cannot parse outgoing-interface " 227 "specified as '%s'", cfg->out_ifs[i]); 228 } 229 for(j=0; j<cfg->num_out_ifs; j++) { 230 if(i!=j && strcmp(cfg->out_ifs[i], cfg->out_ifs[j])==0) 231 fatal_exit("outgoing-interface: %s present " 232 "twice, cannot bind same ports twice.", 233 cfg->out_ifs[i]); 234 } 235 } 236 } 237 238 /** check acl ips */ 239 static void 240 aclchecks(struct config_file* cfg) 241 { 242 int d; 243 struct sockaddr_storage a; 244 socklen_t alen; 245 struct config_str2list* acl; 246 for(acl=cfg->acls; acl; acl = acl->next) { 247 if(!netblockstrtoaddr(acl->str, UNBOUND_DNS_PORT, &a, &alen, 248 &d)) { 249 fatal_exit("cannot parse access control address %s %s", 250 acl->str, acl->str2); 251 } 252 } 253 } 254 255 /** true if fname is a file */ 256 static int 257 is_file(const char* fname) 258 { 259 struct stat buf; 260 if(stat(fname, &buf) < 0) { 261 if(errno==EACCES) { 262 printf("warning: no search permission for one of the directories in path: %s\n", fname); 263 return 1; 264 } 265 perror(fname); 266 return 0; 267 } 268 if(S_ISDIR(buf.st_mode)) { 269 printf("%s is not a file\n", fname); 270 return 0; 271 } 272 return 1; 273 } 274 275 /** true if fname is a directory */ 276 static int 277 is_dir(const char* fname) 278 { 279 struct stat buf; 280 if(stat(fname, &buf) < 0) { 281 if(errno==EACCES) { 282 printf("warning: no search permission for one of the directories in path: %s\n", fname); 283 return 1; 284 } 285 perror(fname); 286 return 0; 287 } 288 if(!(S_ISDIR(buf.st_mode))) { 289 printf("%s is not a directory\n", fname); 290 return 0; 291 } 292 return 1; 293 } 294 295 /** get base dir of a fname */ 296 static char* 297 basedir(char* fname) 298 { 299 char* rev; 300 if(!fname) fatal_exit("out of memory"); 301 rev = strrchr(fname, '/'); 302 if(!rev) return NULL; 303 if(fname == rev) return NULL; 304 rev[0] = 0; 305 return fname; 306 } 307 308 /** check chroot for a file string */ 309 static void 310 check_chroot_string(const char* desc, char** ss, 311 const char* chrootdir, struct config_file* cfg) 312 { 313 char* str = *ss; 314 if(str && str[0]) { 315 *ss = fname_after_chroot(str, cfg, 1); 316 if(!*ss) fatal_exit("out of memory"); 317 if(!is_file(*ss)) { 318 if(chrootdir && chrootdir[0]) 319 fatal_exit("%s: \"%s\" does not exist in " 320 "chrootdir %s", desc, str, chrootdir); 321 else 322 fatal_exit("%s: \"%s\" does not exist", 323 desc, str); 324 } 325 /* put in a new full path for continued checking */ 326 free(str); 327 } 328 } 329 330 /** check file list, every file must be inside the chroot location */ 331 static void 332 check_chroot_filelist(const char* desc, struct config_strlist* list, 333 const char* chrootdir, struct config_file* cfg) 334 { 335 struct config_strlist* p; 336 for(p=list; p; p=p->next) { 337 check_chroot_string(desc, &p->str, chrootdir, cfg); 338 } 339 } 340 341 /** check file list, with wildcard processing */ 342 static void 343 check_chroot_filelist_wild(const char* desc, struct config_strlist* list, 344 const char* chrootdir, struct config_file* cfg) 345 { 346 struct config_strlist* p; 347 for(p=list; p; p=p->next) { 348 #ifdef HAVE_GLOB 349 if(strchr(p->str, '*') || strchr(p->str, '[') || 350 strchr(p->str, '?') || strchr(p->str, '{') || 351 strchr(p->str, '~')) { 352 char* s = p->str; 353 /* adjust whole pattern for chroot and check later */ 354 p->str = fname_after_chroot(p->str, cfg, 1); 355 free(s); 356 } else 357 #endif /* HAVE_GLOB */ 358 check_chroot_string(desc, &p->str, chrootdir, cfg); 359 } 360 } 361 362 #ifdef CLIENT_SUBNET 363 /** check ECS configuration */ 364 static void 365 ecs_conf_checks(struct config_file* cfg) 366 { 367 struct ecs_whitelist* whitelist = NULL; 368 if(!(whitelist = ecs_whitelist_create())) 369 fatal_exit("Could not create ednssubnet whitelist: out of memory"); 370 if(!ecs_whitelist_apply_cfg(whitelist, cfg)) 371 fatal_exit("Could not setup ednssubnet whitelist"); 372 ecs_whitelist_delete(whitelist); 373 } 374 #endif /* CLIENT_SUBNET */ 375 376 /** check configuration for errors */ 377 static void 378 morechecks(struct config_file* cfg, const char* fname) 379 { 380 warn_hosts("stub-host", cfg->stubs); 381 warn_hosts("forward-host", cfg->forwards); 382 interfacechecks(cfg); 383 aclchecks(cfg); 384 385 if(cfg->verbosity < 0) 386 fatal_exit("verbosity value < 0"); 387 if(cfg->num_threads <= 0 || cfg->num_threads > 10000) 388 fatal_exit("num_threads value weird"); 389 if(!cfg->do_ip4 && !cfg->do_ip6) 390 fatal_exit("ip4 and ip6 are both disabled, pointless"); 391 if(!cfg->do_ip6 && cfg->prefer_ip6) 392 fatal_exit("cannot prefer and disable ip6, pointless"); 393 if(!cfg->do_udp && !cfg->do_tcp) 394 fatal_exit("udp and tcp are both disabled, pointless"); 395 if(cfg->edns_buffer_size > cfg->msg_buffer_size) 396 fatal_exit("edns-buffer-size larger than msg-buffer-size, " 397 "answers will not fit in processing buffer"); 398 #ifdef UB_ON_WINDOWS 399 w_config_adjust_directory(cfg); 400 #endif 401 if(cfg->chrootdir && cfg->chrootdir[0] && 402 cfg->chrootdir[strlen(cfg->chrootdir)-1] == '/') 403 fatal_exit("chootdir %s has trailing slash '/' please remove.", 404 cfg->chrootdir); 405 if(cfg->chrootdir && cfg->chrootdir[0] && 406 !is_dir(cfg->chrootdir)) { 407 fatal_exit("bad chroot directory"); 408 } 409 if(cfg->chrootdir && cfg->chrootdir[0]) { 410 char buf[10240]; 411 buf[0] = 0; 412 if(fname[0] != '/') { 413 if(getcwd(buf, sizeof(buf)) == NULL) 414 fatal_exit("getcwd: %s", strerror(errno)); 415 (void)strlcat(buf, "/", sizeof(buf)); 416 } 417 (void)strlcat(buf, fname, sizeof(buf)); 418 if(strncmp(buf, cfg->chrootdir, strlen(cfg->chrootdir)) != 0) 419 fatal_exit("config file %s is not inside chroot %s", 420 buf, cfg->chrootdir); 421 } 422 if(cfg->directory && cfg->directory[0]) { 423 char* ad = fname_after_chroot(cfg->directory, cfg, 0); 424 if(!ad) fatal_exit("out of memory"); 425 if(!is_dir(ad)) fatal_exit("bad chdir directory"); 426 free(ad); 427 } 428 if( (cfg->chrootdir && cfg->chrootdir[0]) || 429 (cfg->directory && cfg->directory[0])) { 430 if(cfg->pidfile && cfg->pidfile[0]) { 431 char* ad = (cfg->pidfile[0]=='/')?strdup(cfg->pidfile): 432 fname_after_chroot(cfg->pidfile, cfg, 1); 433 char* bd = basedir(ad); 434 if(bd && !is_dir(bd)) 435 fatal_exit("pidfile directory does not exist"); 436 free(ad); 437 } 438 if(cfg->logfile && cfg->logfile[0]) { 439 char* ad = fname_after_chroot(cfg->logfile, cfg, 1); 440 char* bd = basedir(ad); 441 if(bd && !is_dir(bd)) 442 fatal_exit("logfile directory does not exist"); 443 free(ad); 444 } 445 } 446 447 check_chroot_filelist("file with root-hints", 448 cfg->root_hints, cfg->chrootdir, cfg); 449 check_chroot_filelist("trust-anchor-file", 450 cfg->trust_anchor_file_list, cfg->chrootdir, cfg); 451 check_chroot_filelist("auto-trust-anchor-file", 452 cfg->auto_trust_anchor_file_list, cfg->chrootdir, cfg); 453 check_chroot_filelist_wild("trusted-keys-file", 454 cfg->trusted_keys_file_list, cfg->chrootdir, cfg); 455 check_chroot_string("dlv-anchor-file", &cfg->dlv_anchor_file, 456 cfg->chrootdir, cfg); 457 #ifdef USE_IPSECMOD 458 if(cfg->ipsecmod_enabled && strstr(cfg->module_conf, "ipsecmod")) { 459 /* only check hook if enabled */ 460 check_chroot_string("ipsecmod-hook", &cfg->ipsecmod_hook, 461 cfg->chrootdir, cfg); 462 } 463 #endif 464 /* remove chroot setting so that modules are not stripping pathnames*/ 465 free(cfg->chrootdir); 466 cfg->chrootdir = NULL; 467 468 /* There should be no reason for 'respip' module not to work with 469 * dns64, but it's not explicitly confirmed, so the combination is 470 * excluded below. It's simply unknown yet for the combination of 471 * respip and other modules. */ 472 if(strcmp(cfg->module_conf, "iterator") != 0 473 && strcmp(cfg->module_conf, "validator iterator") != 0 474 && strcmp(cfg->module_conf, "dns64 validator iterator") != 0 475 && strcmp(cfg->module_conf, "dns64 iterator") != 0 476 && strcmp(cfg->module_conf, "respip iterator") != 0 477 && strcmp(cfg->module_conf, "respip validator iterator") != 0 478 #ifdef WITH_PYTHONMODULE 479 && strcmp(cfg->module_conf, "python iterator") != 0 480 && strcmp(cfg->module_conf, "python validator iterator") != 0 481 && strcmp(cfg->module_conf, "validator python iterator") != 0 482 && strcmp(cfg->module_conf, "dns64 python iterator") != 0 483 && strcmp(cfg->module_conf, "dns64 python validator iterator") != 0 484 && strcmp(cfg->module_conf, "dns64 validator python iterator") != 0 485 && strcmp(cfg->module_conf, "python dns64 iterator") != 0 486 && strcmp(cfg->module_conf, "python dns64 validator iterator") != 0 487 #endif 488 #ifdef USE_CACHEDB 489 && strcmp(cfg->module_conf, "validator cachedb iterator") != 0 490 && strcmp(cfg->module_conf, "cachedb iterator") != 0 491 && strcmp(cfg->module_conf, "dns64 validator cachedb iterator") != 0 492 && strcmp(cfg->module_conf, "dns64 cachedb iterator") != 0 493 #endif 494 #if defined(WITH_PYTHONMODULE) && defined(USE_CACHEDB) 495 && strcmp(cfg->module_conf, "python dns64 cachedb iterator") != 0 496 && strcmp(cfg->module_conf, "python dns64 validator cachedb iterator") != 0 497 && strcmp(cfg->module_conf, "dns64 python cachedb iterator") != 0 498 && strcmp(cfg->module_conf, "dns64 python validator cachedb iterator") != 0 499 && strcmp(cfg->module_conf, "python cachedb iterator") != 0 500 && strcmp(cfg->module_conf, "python validator cachedb iterator") != 0 501 && strcmp(cfg->module_conf, "cachedb python iterator") != 0 502 && strcmp(cfg->module_conf, "validator cachedb python iterator") != 0 503 && strcmp(cfg->module_conf, "validator python cachedb iterator") != 0 504 #endif 505 #ifdef CLIENT_SUBNET 506 && strcmp(cfg->module_conf, "subnetcache iterator") != 0 507 && strcmp(cfg->module_conf, "subnetcache validator iterator") != 0 508 && strcmp(cfg->module_conf, "dns64 subnetcache iterator") != 0 509 && strcmp(cfg->module_conf, "dns64 subnetcache validator iterator") != 0 510 #endif 511 #if defined(WITH_PYTHONMODULE) && defined(CLIENT_SUBNET) 512 && strcmp(cfg->module_conf, "python subnetcache iterator") != 0 513 && strcmp(cfg->module_conf, "subnetcache python iterator") != 0 514 && strcmp(cfg->module_conf, "subnetcache validator iterator") != 0 515 && strcmp(cfg->module_conf, "python subnetcache validator iterator") != 0 516 && strcmp(cfg->module_conf, "subnetcache python validator iterator") != 0 517 && strcmp(cfg->module_conf, "subnetcache validator python iterator") != 0 518 #endif 519 #ifdef USE_IPSECMOD 520 && strcmp(cfg->module_conf, "ipsecmod iterator") != 0 521 && strcmp(cfg->module_conf, "ipsecmod validator iterator") != 0 522 #endif 523 #if defined(WITH_PYTHONMODULE) && defined(USE_IPSECMOD) 524 && strcmp(cfg->module_conf, "python ipsecmod iterator") != 0 525 && strcmp(cfg->module_conf, "ipsecmod python iterator") != 0 526 && strcmp(cfg->module_conf, "ipsecmod validator iterator") != 0 527 && strcmp(cfg->module_conf, "python ipsecmod validator iterator") != 0 528 && strcmp(cfg->module_conf, "ipsecmod python validator iterator") != 0 529 && strcmp(cfg->module_conf, "ipsecmod validator python iterator") != 0 530 #endif 531 ) { 532 fatal_exit("module conf '%s' is not known to work", 533 cfg->module_conf); 534 } 535 536 #ifdef HAVE_GETPWNAM 537 if(cfg->username && cfg->username[0]) { 538 if(getpwnam(cfg->username) == NULL) 539 fatal_exit("user '%s' does not exist.", cfg->username); 540 # ifdef HAVE_ENDPWENT 541 endpwent(); 542 # endif 543 } 544 #endif 545 if(cfg->remote_control_enable && cfg->remote_control_use_cert) { 546 check_chroot_string("server-key-file", &cfg->server_key_file, 547 cfg->chrootdir, cfg); 548 check_chroot_string("server-cert-file", &cfg->server_cert_file, 549 cfg->chrootdir, cfg); 550 if(!is_file(cfg->control_key_file)) 551 fatal_exit("control-key-file: \"%s\" does not exist", 552 cfg->control_key_file); 553 if(!is_file(cfg->control_cert_file)) 554 fatal_exit("control-cert-file: \"%s\" does not exist", 555 cfg->control_cert_file); 556 } 557 558 localzonechecks(cfg); 559 view_and_respipchecks(cfg); 560 #ifdef CLIENT_SUBNET 561 ecs_conf_checks(cfg); 562 #endif 563 } 564 565 /** check forwards */ 566 static void 567 check_fwd(struct config_file* cfg) 568 { 569 struct iter_forwards* fwd = forwards_create(); 570 if(!fwd || !forwards_apply_cfg(fwd, cfg)) { 571 fatal_exit("Could not set forward zones"); 572 } 573 forwards_delete(fwd); 574 } 575 576 /** check hints */ 577 static void 578 check_hints(struct config_file* cfg) 579 { 580 struct iter_hints* hints = hints_create(); 581 if(!hints || !hints_apply_cfg(hints, cfg)) { 582 fatal_exit("Could not set root or stub hints"); 583 } 584 hints_delete(hints); 585 } 586 587 /** check auth zones */ 588 static void 589 check_auth(struct config_file* cfg) 590 { 591 struct auth_zones* az = auth_zones_create(); 592 if(!az || !auth_zones_apply_cfg(az, cfg, 0)) { 593 fatal_exit("Could not setup authority zones"); 594 } 595 auth_zones_delete(az); 596 } 597 598 /** check config file */ 599 static void 600 checkconf(const char* cfgfile, const char* opt, int final) 601 { 602 char oldwd[4096]; 603 struct config_file* cfg = config_create(); 604 if(!cfg) 605 fatal_exit("out of memory"); 606 oldwd[0] = 0; 607 if(!getcwd(oldwd, sizeof(oldwd))) { 608 log_err("cannot getcwd: %s", strerror(errno)); 609 oldwd[0] = 0; 610 } 611 if(!config_read(cfg, cfgfile, NULL)) { 612 /* config_read prints messages to stderr */ 613 config_delete(cfg); 614 exit(1); 615 } 616 if(oldwd[0] && chdir(oldwd) == -1) 617 log_err("cannot chdir(%s): %s", oldwd, strerror(errno)); 618 if(opt) { 619 print_option(cfg, opt, final); 620 config_delete(cfg); 621 return; 622 } 623 morechecks(cfg, cfgfile); 624 check_mod(cfg, iter_get_funcblock()); 625 check_mod(cfg, val_get_funcblock()); 626 #ifdef WITH_PYTHONMODULE 627 if(strstr(cfg->module_conf, "python")) 628 check_mod(cfg, pythonmod_get_funcblock()); 629 #endif 630 check_fwd(cfg); 631 check_hints(cfg); 632 check_auth(cfg); 633 printf("unbound-checkconf: no errors in %s\n", cfgfile); 634 config_delete(cfg); 635 } 636 637 /** getopt global, in case header files fail to declare it. */ 638 extern int optind; 639 /** getopt global, in case header files fail to declare it. */ 640 extern char* optarg; 641 642 /** Main routine for checkconf */ 643 int main(int argc, char* argv[]) 644 { 645 int c; 646 int final = 0; 647 const char* f; 648 const char* opt = NULL; 649 const char* cfgfile = CONFIGFILE; 650 log_ident_set("unbound-checkconf"); 651 log_init(NULL, 0, NULL); 652 checklock_start(); 653 #ifdef USE_WINSOCK 654 /* use registry config file in preference to compiletime location */ 655 if(!(cfgfile=w_lookup_reg_str("Software\\Unbound", "ConfigFile"))) 656 cfgfile = CONFIGFILE; 657 #endif /* USE_WINSOCK */ 658 /* parse the options */ 659 while( (c=getopt(argc, argv, "fho:")) != -1) { 660 switch(c) { 661 case 'f': 662 final = 1; 663 break; 664 case 'o': 665 opt = optarg; 666 break; 667 case '?': 668 case 'h': 669 default: 670 usage(); 671 } 672 } 673 argc -= optind; 674 argv += optind; 675 if(argc != 0 && argc != 1) 676 usage(); 677 if(argc == 1) 678 f = argv[0]; 679 else f = cfgfile; 680 checkconf(f, opt, final); 681 checklock_stop(); 682 return 0; 683 } 684