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