1 /* 2 * util/config_file.c - reads and stores the config file for unbound. 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 * This file contains functions for the config file. 40 */ 41 42 #include "config.h" 43 #include <ctype.h> 44 #include <stdarg.h> 45 #ifdef HAVE_TIME_H 46 #include <time.h> 47 #endif 48 #include "util/log.h" 49 #include "util/configyyrename.h" 50 #include "util/config_file.h" 51 #include "configparser.h" 52 #include "util/net_help.h" 53 #include "util/data/msgparse.h" 54 #include "util/module.h" 55 #include "util/regional.h" 56 #include "util/fptr_wlist.h" 57 #include "util/data/dname.h" 58 #include "util/rtt.h" 59 #include "services/cache/infra.h" 60 #include "sldns/wire2str.h" 61 #include "sldns/parseutil.h" 62 #include "iterator/iterator.h" 63 #ifdef HAVE_GLOB_H 64 # include <glob.h> 65 #endif 66 #ifdef CLIENT_SUBNET 67 #include "edns-subnet/edns-subnet.h" 68 #endif 69 #ifdef HAVE_PWD_H 70 #include <pwd.h> 71 #endif 72 73 /** from cfg username, after daemonize setup performed */ 74 uid_t cfg_uid = (uid_t)-1; 75 /** from cfg username, after daemonize setup performed */ 76 gid_t cfg_gid = (gid_t)-1; 77 /** for debug allow small timeout values for fast rollovers */ 78 int autr_permit_small_holddown = 0; 79 /** size (in bytes) of stream wait buffers max */ 80 size_t stream_wait_max = 4 * 1024 * 1024; 81 size_t http2_query_buffer_max = 4 * 1024 * 1024; 82 size_t http2_response_buffer_max = 4 * 1024 * 1024; 83 84 /** global config during parsing */ 85 struct config_parser_state* cfg_parser = 0; 86 87 /** init ports possible for use */ 88 static void init_outgoing_availports(int* array, int num); 89 90 struct config_file* 91 config_create(void) 92 { 93 struct config_file* cfg; 94 cfg = (struct config_file*)calloc(1, sizeof(struct config_file)); 95 if(!cfg) 96 return NULL; 97 /* the defaults if no config is present */ 98 cfg->verbosity = 1; 99 cfg->stat_interval = 0; 100 cfg->stat_cumulative = 0; 101 cfg->stat_extended = 0; 102 cfg->num_threads = 1; 103 cfg->port = UNBOUND_DNS_PORT; 104 cfg->do_ip4 = 1; 105 cfg->do_ip6 = 1; 106 cfg->do_udp = 1; 107 cfg->do_tcp = 1; 108 cfg->tcp_reuse_timeout = 60 * 1000; /* 60s in milisecs */ 109 cfg->max_reuse_tcp_queries = 200; 110 cfg->tcp_upstream = 0; 111 cfg->udp_upstream_without_downstream = 0; 112 cfg->tcp_mss = 0; 113 cfg->outgoing_tcp_mss = 0; 114 cfg->tcp_idle_timeout = 30 * 1000; /* 30s in millisecs */ 115 cfg->tcp_auth_query_timeout = 3 * 1000; /* 3s in millisecs */ 116 cfg->do_tcp_keepalive = 0; 117 cfg->tcp_keepalive_timeout = 120 * 1000; /* 120s in millisecs */ 118 cfg->ssl_service_key = NULL; 119 cfg->ssl_service_pem = NULL; 120 cfg->ssl_port = UNBOUND_DNS_OVER_TLS_PORT; 121 cfg->ssl_upstream = 0; 122 cfg->tls_cert_bundle = NULL; 123 cfg->tls_win_cert = 0; 124 cfg->tls_use_sni = 1; 125 cfg->https_port = UNBOUND_DNS_OVER_HTTPS_PORT; 126 if(!(cfg->http_endpoint = strdup("/dns-query"))) goto error_exit; 127 cfg->http_max_streams = 100; 128 cfg->http_query_buffer_size = 4*1024*1024; 129 cfg->http_response_buffer_size = 4*1024*1024; 130 cfg->http_nodelay = 1; 131 cfg->use_syslog = 1; 132 cfg->log_identity = NULL; /* changed later with argv[0] */ 133 cfg->log_time_ascii = 0; 134 cfg->log_queries = 0; 135 cfg->log_replies = 0; 136 cfg->log_tag_queryreply = 0; 137 cfg->log_local_actions = 0; 138 cfg->log_servfail = 0; 139 #ifndef USE_WINSOCK 140 # ifdef USE_MINI_EVENT 141 /* select max 1024 sockets */ 142 cfg->outgoing_num_ports = 960; 143 cfg->num_queries_per_thread = 512; 144 # else 145 /* libevent can use many sockets */ 146 cfg->outgoing_num_ports = 4096; 147 cfg->num_queries_per_thread = 1024; 148 # endif 149 cfg->outgoing_num_tcp = 10; 150 cfg->incoming_num_tcp = 10; 151 #else 152 cfg->outgoing_num_ports = 48; /* windows is limited in num fds */ 153 cfg->num_queries_per_thread = 24; 154 cfg->outgoing_num_tcp = 2; /* leaves 64-52=12 for: 4if,1stop,thread4 */ 155 cfg->incoming_num_tcp = 2; 156 #endif 157 cfg->stream_wait_size = 4 * 1024 * 1024; 158 cfg->edns_buffer_size = 1232; /* from DNS flagday recommendation */ 159 cfg->msg_buffer_size = 65552; /* 64 k + a small margin */ 160 cfg->msg_cache_size = 4 * 1024 * 1024; 161 cfg->msg_cache_slabs = 4; 162 cfg->jostle_time = 200; 163 cfg->rrset_cache_size = 4 * 1024 * 1024; 164 cfg->rrset_cache_slabs = 4; 165 cfg->host_ttl = 900; 166 cfg->bogus_ttl = 60; 167 cfg->min_ttl = 0; 168 cfg->max_ttl = 3600 * 24; 169 cfg->max_negative_ttl = 3600; 170 cfg->prefetch = 0; 171 cfg->prefetch_key = 0; 172 cfg->deny_any = 0; 173 cfg->infra_cache_slabs = 4; 174 cfg->infra_cache_numhosts = 10000; 175 cfg->infra_cache_min_rtt = 50; 176 cfg->infra_keep_probing = 0; 177 cfg->delay_close = 0; 178 cfg->udp_connect = 1; 179 if(!(cfg->outgoing_avail_ports = (int*)calloc(65536, sizeof(int)))) 180 goto error_exit; 181 init_outgoing_availports(cfg->outgoing_avail_ports, 65536); 182 if(!(cfg->username = strdup(UB_USERNAME))) goto error_exit; 183 #ifdef HAVE_CHROOT 184 if(!(cfg->chrootdir = strdup(CHROOT_DIR))) goto error_exit; 185 #endif 186 if(!(cfg->directory = strdup(RUN_DIR))) goto error_exit; 187 if(!(cfg->logfile = strdup(""))) goto error_exit; 188 if(!(cfg->pidfile = strdup(PIDFILE))) goto error_exit; 189 if(!(cfg->target_fetch_policy = strdup("3 2 1 0 0"))) goto error_exit; 190 cfg->fast_server_permil = 0; 191 cfg->fast_server_num = 3; 192 cfg->donotqueryaddrs = NULL; 193 cfg->donotquery_localhost = 1; 194 cfg->root_hints = NULL; 195 cfg->use_systemd = 0; 196 cfg->do_daemonize = 1; 197 cfg->if_automatic = 0; 198 cfg->so_rcvbuf = 0; 199 cfg->so_sndbuf = 0; 200 cfg->so_reuseport = REUSEPORT_DEFAULT; 201 cfg->ip_transparent = 0; 202 cfg->ip_freebind = 0; 203 cfg->ip_dscp = 0; 204 cfg->num_ifs = 0; 205 cfg->ifs = NULL; 206 cfg->num_out_ifs = 0; 207 cfg->out_ifs = NULL; 208 cfg->stubs = NULL; 209 cfg->forwards = NULL; 210 cfg->auths = NULL; 211 #ifdef CLIENT_SUBNET 212 cfg->client_subnet = NULL; 213 cfg->client_subnet_zone = NULL; 214 cfg->client_subnet_opcode = LDNS_EDNS_CLIENT_SUBNET; 215 cfg->client_subnet_always_forward = 0; 216 cfg->max_client_subnet_ipv4 = 24; 217 cfg->max_client_subnet_ipv6 = 56; 218 cfg->min_client_subnet_ipv4 = 0; 219 cfg->min_client_subnet_ipv6 = 0; 220 cfg->max_ecs_tree_size_ipv4 = 100; 221 cfg->max_ecs_tree_size_ipv6 = 100; 222 #endif 223 cfg->views = NULL; 224 cfg->acls = NULL; 225 cfg->tcp_connection_limits = NULL; 226 cfg->harden_short_bufsize = 1; 227 cfg->harden_large_queries = 0; 228 cfg->harden_glue = 1; 229 cfg->harden_dnssec_stripped = 1; 230 cfg->harden_below_nxdomain = 1; 231 cfg->harden_referral_path = 0; 232 cfg->harden_algo_downgrade = 0; 233 cfg->use_caps_bits_for_id = 0; 234 cfg->caps_whitelist = NULL; 235 cfg->private_address = NULL; 236 cfg->private_domain = NULL; 237 cfg->unwanted_threshold = 0; 238 cfg->hide_identity = 0; 239 cfg->hide_version = 0; 240 cfg->hide_trustanchor = 0; 241 cfg->hide_http_user_agent = 0; 242 cfg->identity = NULL; 243 cfg->version = NULL; 244 cfg->http_user_agent = NULL; 245 cfg->nsid_cfg_str = NULL; 246 cfg->nsid = NULL; 247 cfg->nsid_len = 0; 248 cfg->auto_trust_anchor_file_list = NULL; 249 cfg->trust_anchor_file_list = NULL; 250 cfg->trust_anchor_list = NULL; 251 cfg->trusted_keys_file_list = NULL; 252 cfg->trust_anchor_signaling = 1; 253 cfg->root_key_sentinel = 1; 254 cfg->domain_insecure = NULL; 255 cfg->val_date_override = 0; 256 cfg->val_sig_skew_min = 3600; /* at least daylight savings trouble */ 257 cfg->val_sig_skew_max = 86400; /* at most timezone settings trouble */ 258 cfg->val_max_restart = 5; 259 cfg->val_clean_additional = 1; 260 cfg->val_log_level = 0; 261 cfg->val_log_squelch = 0; 262 cfg->val_permissive_mode = 0; 263 cfg->aggressive_nsec = 0; 264 cfg->ignore_cd = 0; 265 cfg->serve_expired = 0; 266 cfg->serve_expired_ttl = 0; 267 cfg->serve_expired_ttl_reset = 0; 268 cfg->serve_expired_reply_ttl = 30; 269 cfg->serve_expired_client_timeout = 0; 270 cfg->serve_original_ttl = 0; 271 cfg->zonemd_permissive_mode = 0; 272 cfg->add_holddown = 30*24*3600; 273 cfg->del_holddown = 30*24*3600; 274 cfg->keep_missing = 366*24*3600; /* one year plus a little leeway */ 275 cfg->permit_small_holddown = 0; 276 cfg->key_cache_size = 4 * 1024 * 1024; 277 cfg->key_cache_slabs = 4; 278 cfg->neg_cache_size = 1 * 1024 * 1024; 279 cfg->local_zones = NULL; 280 cfg->local_zones_nodefault = NULL; 281 #ifdef USE_IPSET 282 cfg->local_zones_ipset = NULL; 283 #endif 284 cfg->local_zones_disable_default = 0; 285 cfg->local_data = NULL; 286 cfg->local_zone_overrides = NULL; 287 cfg->unblock_lan_zones = 0; 288 cfg->insecure_lan_zones = 0; 289 cfg->python_script = NULL; 290 cfg->dynlib_file = NULL; 291 cfg->remote_control_enable = 0; 292 cfg->control_ifs.first = NULL; 293 cfg->control_ifs.last = NULL; 294 cfg->control_port = UNBOUND_CONTROL_PORT; 295 cfg->control_use_cert = 1; 296 cfg->minimal_responses = 1; 297 cfg->rrset_roundrobin = 1; 298 cfg->unknown_server_time_limit = 376; 299 cfg->max_udp_size = 4096; 300 if(!(cfg->server_key_file = strdup(RUN_DIR"/unbound_server.key"))) 301 goto error_exit; 302 if(!(cfg->server_cert_file = strdup(RUN_DIR"/unbound_server.pem"))) 303 goto error_exit; 304 if(!(cfg->control_key_file = strdup(RUN_DIR"/unbound_control.key"))) 305 goto error_exit; 306 if(!(cfg->control_cert_file = strdup(RUN_DIR"/unbound_control.pem"))) 307 goto error_exit; 308 309 #ifdef CLIENT_SUBNET 310 if(!(cfg->module_conf = strdup("subnetcache validator iterator"))) goto error_exit; 311 #else 312 if(!(cfg->module_conf = strdup("validator iterator"))) goto error_exit; 313 #endif 314 if(!(cfg->val_nsec3_key_iterations = 315 strdup("1024 150 2048 150 4096 150"))) goto error_exit; 316 #if defined(DNSTAP_SOCKET_PATH) 317 if(!(cfg->dnstap_socket_path = strdup(DNSTAP_SOCKET_PATH))) 318 goto error_exit; 319 #endif 320 cfg->dnstap_bidirectional = 1; 321 cfg->dnstap_tls = 1; 322 cfg->disable_dnssec_lame_check = 0; 323 cfg->ip_ratelimit = 0; 324 cfg->ratelimit = 0; 325 cfg->ip_ratelimit_slabs = 4; 326 cfg->ratelimit_slabs = 4; 327 cfg->ip_ratelimit_size = 4*1024*1024; 328 cfg->ratelimit_size = 4*1024*1024; 329 cfg->ratelimit_for_domain = NULL; 330 cfg->ratelimit_below_domain = NULL; 331 cfg->outbound_msg_retry = 5; 332 cfg->ip_ratelimit_factor = 10; 333 cfg->ratelimit_factor = 10; 334 cfg->qname_minimisation = 1; 335 cfg->qname_minimisation_strict = 0; 336 cfg->shm_enable = 0; 337 cfg->shm_key = 11777; 338 cfg->edns_client_strings = NULL; 339 cfg->edns_client_string_opcode = 65001; 340 cfg->dnscrypt = 0; 341 cfg->dnscrypt_port = 0; 342 cfg->dnscrypt_provider = NULL; 343 cfg->dnscrypt_provider_cert = NULL; 344 cfg->dnscrypt_provider_cert_rotated = NULL; 345 cfg->dnscrypt_secret_key = NULL; 346 cfg->dnscrypt_shared_secret_cache_size = 4*1024*1024; 347 cfg->dnscrypt_shared_secret_cache_slabs = 4; 348 cfg->dnscrypt_nonce_cache_size = 4*1024*1024; 349 cfg->dnscrypt_nonce_cache_slabs = 4; 350 cfg->pad_responses = 1; 351 cfg->pad_responses_block_size = 468; /* from RFC8467 */ 352 cfg->pad_queries = 1; 353 cfg->pad_queries_block_size = 128; /* from RFC8467 */ 354 #ifdef USE_IPSECMOD 355 cfg->ipsecmod_enabled = 1; 356 cfg->ipsecmod_ignore_bogus = 0; 357 cfg->ipsecmod_hook = NULL; 358 cfg->ipsecmod_max_ttl = 3600; 359 cfg->ipsecmod_whitelist = NULL; 360 cfg->ipsecmod_strict = 0; 361 #endif 362 #ifdef USE_CACHEDB 363 if(!(cfg->cachedb_backend = strdup("testframe"))) goto error_exit; 364 if(!(cfg->cachedb_secret = strdup("default"))) goto error_exit; 365 #ifdef USE_REDIS 366 if(!(cfg->redis_server_host = strdup("127.0.0.1"))) goto error_exit; 367 cfg->redis_timeout = 100; 368 cfg->redis_server_port = 6379; 369 cfg->redis_expire_records = 0; 370 #endif /* USE_REDIS */ 371 #endif /* USE_CACHEDB */ 372 #ifdef USE_IPSET 373 cfg->ipset_name_v4 = NULL; 374 cfg->ipset_name_v6 = NULL; 375 #endif 376 return cfg; 377 error_exit: 378 config_delete(cfg); 379 return NULL; 380 } 381 382 struct config_file* config_create_forlib(void) 383 { 384 struct config_file* cfg = config_create(); 385 if(!cfg) return NULL; 386 /* modifications for library use, less verbose, less memory */ 387 free(cfg->chrootdir); 388 cfg->chrootdir = NULL; 389 cfg->verbosity = 0; 390 cfg->outgoing_num_ports = 16; /* in library use, this is 'reasonable' 391 and probably within the ulimit(maxfds) of the user */ 392 cfg->outgoing_num_tcp = 2; 393 cfg->msg_cache_size = 1024*1024; 394 cfg->msg_cache_slabs = 1; 395 cfg->rrset_cache_size = 1024*1024; 396 cfg->rrset_cache_slabs = 1; 397 cfg->infra_cache_slabs = 1; 398 cfg->use_syslog = 0; 399 cfg->key_cache_size = 1024*1024; 400 cfg->key_cache_slabs = 1; 401 cfg->neg_cache_size = 100 * 1024; 402 cfg->donotquery_localhost = 0; /* allow, so that you can ask a 403 forward nameserver running on localhost */ 404 cfg->val_log_level = 2; /* to fill why_bogus with */ 405 cfg->val_log_squelch = 1; 406 cfg->minimal_responses = 0; 407 cfg->harden_short_bufsize = 1; 408 return cfg; 409 } 410 411 /** check that the value passed is >= 0 */ 412 #define IS_NUMBER_OR_ZERO \ 413 if(atoi(val) == 0 && strcmp(val, "0") != 0) return 0 414 /** check that the value passed is > 0 */ 415 #define IS_NONZERO_NUMBER \ 416 if(atoi(val) == 0) return 0 417 /** check that the value passed is not 0 and a power of 2 */ 418 #define IS_POW2_NUMBER \ 419 if(atoi(val) == 0 || !is_pow2((size_t)atoi(val))) return 0 420 /** check that the value passed is yes or no */ 421 #define IS_YES_OR_NO \ 422 if(strcmp(val, "yes") != 0 && strcmp(val, "no") != 0) return 0 423 /** put integer_or_zero into variable */ 424 #define S_NUMBER_OR_ZERO(str, var) if(strcmp(opt, str) == 0) \ 425 { IS_NUMBER_OR_ZERO; cfg->var = atoi(val); } 426 /** put integer_nonzero into variable */ 427 #define S_NUMBER_NONZERO(str, var) if(strcmp(opt, str) == 0) \ 428 { IS_NONZERO_NUMBER; cfg->var = atoi(val); } 429 /** put integer_or_zero into unsigned */ 430 #define S_UNSIGNED_OR_ZERO(str, var) if(strcmp(opt, str) == 0) \ 431 { IS_NUMBER_OR_ZERO; cfg->var = (unsigned)atoi(val); } 432 /** put integer_or_zero into size_t */ 433 #define S_SIZET_OR_ZERO(str, var) if(strcmp(opt, str) == 0) \ 434 { IS_NUMBER_OR_ZERO; cfg->var = (size_t)atoi(val); } 435 /** put integer_nonzero into size_t */ 436 #define S_SIZET_NONZERO(str, var) if(strcmp(opt, str) == 0) \ 437 { IS_NONZERO_NUMBER; cfg->var = (size_t)atoi(val); } 438 /** put yesno into variable */ 439 #define S_YNO(str, var) if(strcmp(opt, str) == 0) \ 440 { IS_YES_OR_NO; cfg->var = (strcmp(val, "yes") == 0); } 441 /** put memsize into variable */ 442 #define S_MEMSIZE(str, var) if(strcmp(opt, str)==0) \ 443 { return cfg_parse_memsize(val, &cfg->var); } 444 /** put pow2 number into variable */ 445 #define S_POW2(str, var) if(strcmp(opt, str)==0) \ 446 { IS_POW2_NUMBER; cfg->var = (size_t)atoi(val); } 447 /** put string into variable */ 448 #define S_STR(str, var) if(strcmp(opt, str)==0) \ 449 { free(cfg->var); return (cfg->var = strdup(val)) != NULL; } 450 /** put string into strlist */ 451 #define S_STRLIST(str, var) if(strcmp(opt, str)==0) \ 452 { return cfg_strlist_insert(&cfg->var, strdup(val)); } 453 /** put string into strlist if not present yet*/ 454 #define S_STRLIST_UNIQ(str, var) if(strcmp(opt, str)==0) \ 455 { if(cfg_strlist_find(cfg->var, val)) { return 0;} \ 456 return cfg_strlist_insert(&cfg->var, strdup(val)); } 457 /** append string to strlist */ 458 #define S_STRLIST_APPEND(str, var) if(strcmp(opt, str)==0) \ 459 { return cfg_strlist_append(&cfg->var, strdup(val)); } 460 461 int config_set_option(struct config_file* cfg, const char* opt, 462 const char* val) 463 { 464 char buf[64]; 465 if(!opt) return 0; 466 if(opt[strlen(opt)-1] != ':' && strlen(opt)+2<sizeof(buf)) { 467 snprintf(buf, sizeof(buf), "%s:", opt); 468 opt = buf; 469 } 470 S_NUMBER_OR_ZERO("verbosity:", verbosity) 471 else if(strcmp(opt, "statistics-interval:") == 0) { 472 if(strcmp(val, "0") == 0 || strcmp(val, "") == 0) 473 cfg->stat_interval = 0; 474 else if(atoi(val) == 0) 475 return 0; 476 else cfg->stat_interval = atoi(val); 477 } else if(strcmp(opt, "num_threads:") == 0) { 478 /* not supported, library must have 1 thread in bgworker */ 479 return 0; 480 } else if(strcmp(opt, "outgoing-port-permit:") == 0) { 481 return cfg_mark_ports(val, 1, 482 cfg->outgoing_avail_ports, 65536); 483 } else if(strcmp(opt, "outgoing-port-avoid:") == 0) { 484 return cfg_mark_ports(val, 0, 485 cfg->outgoing_avail_ports, 65536); 486 } else if(strcmp(opt, "local-zone:") == 0) { 487 return cfg_parse_local_zone(cfg, val); 488 } else if(strcmp(opt, "val-override-date:") == 0) { 489 if(strcmp(val, "") == 0 || strcmp(val, "0") == 0) { 490 cfg->val_date_override = 0; 491 } else if(strlen(val) == 14) { 492 cfg->val_date_override = cfg_convert_timeval(val); 493 return cfg->val_date_override != 0; 494 } else { 495 if(atoi(val) == 0) return 0; 496 cfg->val_date_override = (uint32_t)atoi(val); 497 } 498 } else if(strcmp(opt, "local-data-ptr:") == 0) { 499 char* ptr = cfg_ptr_reverse((char*)opt); 500 return cfg_strlist_insert(&cfg->local_data, ptr); 501 } else if(strcmp(opt, "logfile:") == 0) { 502 cfg->use_syslog = 0; 503 free(cfg->logfile); 504 return (cfg->logfile = strdup(val)) != NULL; 505 } 506 else if(strcmp(opt, "log-time-ascii:") == 0) 507 { IS_YES_OR_NO; cfg->log_time_ascii = (strcmp(val, "yes") == 0); 508 log_set_time_asc(cfg->log_time_ascii); } 509 else S_SIZET_NONZERO("max-udp-size:", max_udp_size) 510 else S_YNO("use-syslog:", use_syslog) 511 else S_STR("log-identity:", log_identity) 512 else S_YNO("extended-statistics:", stat_extended) 513 else S_YNO("statistics-cumulative:", stat_cumulative) 514 else S_YNO("shm-enable:", shm_enable) 515 else S_NUMBER_OR_ZERO("shm-key:", shm_key) 516 else S_YNO("do-ip4:", do_ip4) 517 else S_YNO("do-ip6:", do_ip6) 518 else S_YNO("do-udp:", do_udp) 519 else S_YNO("do-tcp:", do_tcp) 520 else S_YNO("prefer-ip4:", prefer_ip4) 521 else S_YNO("prefer-ip6:", prefer_ip6) 522 else S_YNO("tcp-upstream:", tcp_upstream) 523 else S_YNO("udp-upstream-without-downstream:", 524 udp_upstream_without_downstream) 525 else S_NUMBER_NONZERO("tcp-mss:", tcp_mss) 526 else S_NUMBER_NONZERO("outgoing-tcp-mss:", outgoing_tcp_mss) 527 else S_NUMBER_NONZERO("tcp-auth-query-timeout:", tcp_auth_query_timeout) 528 else S_NUMBER_NONZERO("tcp-idle-timeout:", tcp_idle_timeout) 529 else S_NUMBER_NONZERO("max-reuse-tcp-queries:", max_reuse_tcp_queries) 530 else S_NUMBER_NONZERO("tcp-reuse-timeout:", tcp_reuse_timeout) 531 else S_YNO("edns-tcp-keepalive:", do_tcp_keepalive) 532 else S_NUMBER_NONZERO("edns-tcp-keepalive-timeout:", tcp_keepalive_timeout) 533 else S_YNO("ssl-upstream:", ssl_upstream) 534 else S_STR("ssl-service-key:", ssl_service_key) 535 else S_STR("ssl-service-pem:", ssl_service_pem) 536 else S_NUMBER_NONZERO("ssl-port:", ssl_port) 537 else S_STR("tls-cert-bundle:", tls_cert_bundle) 538 else S_YNO("tls-win-cert:", tls_win_cert) 539 else S_STRLIST("additional-tls-port:", tls_additional_port) 540 else S_STRLIST("tls-additional-ports:", tls_additional_port) 541 else S_STRLIST("tls-additional-port:", tls_additional_port) 542 else S_STRLIST_APPEND("tls-session-ticket-keys:", tls_session_ticket_keys) 543 else S_STR("tls-ciphers:", tls_ciphers) 544 else S_STR("tls-ciphersuites:", tls_ciphersuites) 545 else S_YNO("tls-use-sni:", tls_use_sni) 546 else S_NUMBER_NONZERO("https-port:", https_port) 547 else S_STR("http-endpoint:", http_endpoint) 548 else S_NUMBER_NONZERO("http-max-streams:", http_max_streams) 549 else S_MEMSIZE("http-query-buffer-size:", http_query_buffer_size) 550 else S_MEMSIZE("http-response-buffer-size:", http_response_buffer_size) 551 else S_YNO("http-nodelay:", http_nodelay) 552 else S_YNO("http-notls-downstream:", http_notls_downstream) 553 else S_YNO("interface-automatic:", if_automatic) 554 else S_YNO("use-systemd:", use_systemd) 555 else S_YNO("do-daemonize:", do_daemonize) 556 else S_NUMBER_NONZERO("port:", port) 557 else S_NUMBER_NONZERO("outgoing-range:", outgoing_num_ports) 558 else S_SIZET_OR_ZERO("outgoing-num-tcp:", outgoing_num_tcp) 559 else S_SIZET_OR_ZERO("incoming-num-tcp:", incoming_num_tcp) 560 else S_MEMSIZE("stream-wait-size:", stream_wait_size) 561 else S_SIZET_NONZERO("edns-buffer-size:", edns_buffer_size) 562 else S_SIZET_NONZERO("msg-buffer-size:", msg_buffer_size) 563 else S_MEMSIZE("msg-cache-size:", msg_cache_size) 564 else S_POW2("msg-cache-slabs:", msg_cache_slabs) 565 else S_SIZET_NONZERO("num-queries-per-thread:",num_queries_per_thread) 566 else S_SIZET_OR_ZERO("jostle-timeout:", jostle_time) 567 else S_MEMSIZE("so-rcvbuf:", so_rcvbuf) 568 else S_MEMSIZE("so-sndbuf:", so_sndbuf) 569 else S_YNO("so-reuseport:", so_reuseport) 570 else S_YNO("ip-transparent:", ip_transparent) 571 else S_YNO("ip-freebind:", ip_freebind) 572 else S_NUMBER_OR_ZERO("ip-dscp:", ip_dscp) 573 else S_MEMSIZE("rrset-cache-size:", rrset_cache_size) 574 else S_POW2("rrset-cache-slabs:", rrset_cache_slabs) 575 else S_YNO("prefetch:", prefetch) 576 else S_YNO("prefetch-key:", prefetch_key) 577 else S_YNO("deny-any:", deny_any) 578 else if(strcmp(opt, "cache-max-ttl:") == 0) 579 { IS_NUMBER_OR_ZERO; cfg->max_ttl = atoi(val); MAX_TTL=(time_t)cfg->max_ttl;} 580 else if(strcmp(opt, "cache-max-negative-ttl:") == 0) 581 { IS_NUMBER_OR_ZERO; cfg->max_negative_ttl = atoi(val); MAX_NEG_TTL=(time_t)cfg->max_negative_ttl;} 582 else if(strcmp(opt, "cache-min-ttl:") == 0) 583 { IS_NUMBER_OR_ZERO; cfg->min_ttl = atoi(val); MIN_TTL=(time_t)cfg->min_ttl;} 584 else if(strcmp(opt, "infra-cache-min-rtt:") == 0) { 585 IS_NUMBER_OR_ZERO; cfg->infra_cache_min_rtt = atoi(val); 586 RTT_MIN_TIMEOUT=cfg->infra_cache_min_rtt; 587 } 588 else S_YNO("infra-keep-probing:", infra_keep_probing) 589 else S_NUMBER_OR_ZERO("infra-host-ttl:", host_ttl) 590 else S_POW2("infra-cache-slabs:", infra_cache_slabs) 591 else S_SIZET_NONZERO("infra-cache-numhosts:", infra_cache_numhosts) 592 else S_NUMBER_OR_ZERO("delay-close:", delay_close) 593 else S_YNO("udp-connect:", udp_connect) 594 else S_STR("chroot:", chrootdir) 595 else S_STR("username:", username) 596 else S_STR("directory:", directory) 597 else S_STR("pidfile:", pidfile) 598 else S_YNO("hide-identity:", hide_identity) 599 else S_YNO("hide-version:", hide_version) 600 else S_YNO("hide-trustanchor:", hide_trustanchor) 601 else S_YNO("hide-http-user-agent:", hide_http_user_agent) 602 else S_STR("identity:", identity) 603 else S_STR("version:", version) 604 else S_STR("http-user-agent:", http_user_agent) 605 else if(strcmp(opt, "nsid:") == 0) { 606 free(cfg->nsid_cfg_str); 607 if (!(cfg->nsid_cfg_str = strdup(val))) 608 return 0; 609 /* Empty string is just validly unsetting nsid */ 610 if (*val == 0) { 611 free(cfg->nsid); 612 cfg->nsid = NULL; 613 cfg->nsid_len = 0; 614 return 1; 615 } 616 cfg->nsid = cfg_parse_nsid(val, &cfg->nsid_len); 617 return cfg->nsid != NULL; 618 } 619 else S_STRLIST("root-hints:", root_hints) 620 else S_STR("target-fetch-policy:", target_fetch_policy) 621 else S_YNO("harden-glue:", harden_glue) 622 else S_YNO("harden-short-bufsize:", harden_short_bufsize) 623 else S_YNO("harden-large-queries:", harden_large_queries) 624 else S_YNO("harden-dnssec-stripped:", harden_dnssec_stripped) 625 else S_YNO("harden-below-nxdomain:", harden_below_nxdomain) 626 else S_YNO("harden-referral-path:", harden_referral_path) 627 else S_YNO("harden-algo-downgrade:", harden_algo_downgrade) 628 else S_YNO("use-caps-for-id:", use_caps_bits_for_id) 629 else S_STRLIST("caps-whitelist:", caps_whitelist) 630 else S_SIZET_OR_ZERO("unwanted-reply-threshold:", unwanted_threshold) 631 else S_STRLIST("private-address:", private_address) 632 else S_STRLIST("private-domain:", private_domain) 633 else S_YNO("do-not-query-localhost:", donotquery_localhost) 634 else S_STRLIST("do-not-query-address:", donotqueryaddrs) 635 else S_STRLIST("auto-trust-anchor-file:", auto_trust_anchor_file_list) 636 else S_STRLIST("trust-anchor-file:", trust_anchor_file_list) 637 else S_STRLIST("trust-anchor:", trust_anchor_list) 638 else S_STRLIST("trusted-keys-file:", trusted_keys_file_list) 639 else S_YNO("trust-anchor-signaling:", trust_anchor_signaling) 640 else S_YNO("root-key-sentinel:", root_key_sentinel) 641 else S_STRLIST("domain-insecure:", domain_insecure) 642 else S_NUMBER_OR_ZERO("val-bogus-ttl:", bogus_ttl) 643 else S_YNO("val-clean-additional:", val_clean_additional) 644 else S_NUMBER_OR_ZERO("val-log-level:", val_log_level) 645 else S_YNO("val-log-squelch:", val_log_squelch) 646 else S_YNO("log-queries:", log_queries) 647 else S_YNO("log-replies:", log_replies) 648 else S_YNO("log-tag-queryreply:", log_tag_queryreply) 649 else S_YNO("log-local-actions:", log_local_actions) 650 else S_YNO("log-servfail:", log_servfail) 651 else S_YNO("val-permissive-mode:", val_permissive_mode) 652 else S_YNO("aggressive-nsec:", aggressive_nsec) 653 else S_YNO("ignore-cd-flag:", ignore_cd) 654 else if(strcmp(opt, "serve-expired:") == 0) 655 { IS_YES_OR_NO; cfg->serve_expired = (strcmp(val, "yes") == 0); 656 SERVE_EXPIRED = cfg->serve_expired; } 657 else if(strcmp(opt, "serve-expired-ttl:") == 0) 658 { IS_NUMBER_OR_ZERO; cfg->serve_expired_ttl = atoi(val); SERVE_EXPIRED_TTL=(time_t)cfg->serve_expired_ttl;} 659 else S_YNO("serve-expired-ttl-reset:", serve_expired_ttl_reset) 660 else if(strcmp(opt, "serve-expired-reply-ttl:") == 0) 661 { IS_NUMBER_OR_ZERO; cfg->serve_expired_reply_ttl = atoi(val); SERVE_EXPIRED_REPLY_TTL=(time_t)cfg->serve_expired_reply_ttl;} 662 else S_NUMBER_OR_ZERO("serve-expired-client-timeout:", serve_expired_client_timeout) 663 else S_YNO("serve-original-ttl:", serve_original_ttl) 664 else S_STR("val-nsec3-keysize-iterations:", val_nsec3_key_iterations) 665 else S_YNO("zonemd-permissive-mode:", zonemd_permissive_mode) 666 else S_UNSIGNED_OR_ZERO("add-holddown:", add_holddown) 667 else S_UNSIGNED_OR_ZERO("del-holddown:", del_holddown) 668 else S_UNSIGNED_OR_ZERO("keep-missing:", keep_missing) 669 else if(strcmp(opt, "permit-small-holddown:") == 0) 670 { IS_YES_OR_NO; cfg->permit_small_holddown = (strcmp(val, "yes") == 0); 671 autr_permit_small_holddown = cfg->permit_small_holddown; } 672 else S_MEMSIZE("key-cache-size:", key_cache_size) 673 else S_POW2("key-cache-slabs:", key_cache_slabs) 674 else S_MEMSIZE("neg-cache-size:", neg_cache_size) 675 else S_YNO("minimal-responses:", minimal_responses) 676 else S_YNO("rrset-roundrobin:", rrset_roundrobin) 677 else S_NUMBER_OR_ZERO("unknown-server-time-limit:", unknown_server_time_limit) 678 else S_STRLIST("local-data:", local_data) 679 else S_YNO("unblock-lan-zones:", unblock_lan_zones) 680 else S_YNO("insecure-lan-zones:", insecure_lan_zones) 681 else S_YNO("control-enable:", remote_control_enable) 682 else S_STRLIST_APPEND("control-interface:", control_ifs) 683 else S_NUMBER_NONZERO("control-port:", control_port) 684 else S_STR("server-key-file:", server_key_file) 685 else S_STR("server-cert-file:", server_cert_file) 686 else S_STR("control-key-file:", control_key_file) 687 else S_STR("control-cert-file:", control_cert_file) 688 else S_STR("module-config:", module_conf) 689 else S_STRLIST("python-script:", python_script) 690 else S_STRLIST("dynlib-file:", dynlib_file) 691 else S_YNO("disable-dnssec-lame-check:", disable_dnssec_lame_check) 692 #ifdef CLIENT_SUBNET 693 /* Can't set max subnet prefix here, since that value is used when 694 * generating the address tree. */ 695 /* No client-subnet-always-forward here, module registration depends on 696 * this option. */ 697 #endif 698 #ifdef USE_DNSTAP 699 else S_YNO("dnstap-enable:", dnstap) 700 else S_YNO("dnstap-bidirectional:", dnstap_bidirectional) 701 else S_STR("dnstap-socket-path:", dnstap_socket_path) 702 else S_STR("dnstap-ip:", dnstap_ip) 703 else S_YNO("dnstap-tls:", dnstap_tls) 704 else S_STR("dnstap-tls-server-name:", dnstap_tls_server_name) 705 else S_STR("dnstap-tls-cert-bundle:", dnstap_tls_cert_bundle) 706 else S_STR("dnstap-tls-client-key-file:", dnstap_tls_client_key_file) 707 else S_STR("dnstap-tls-client-cert-file:", 708 dnstap_tls_client_cert_file) 709 else S_YNO("dnstap-send-identity:", dnstap_send_identity) 710 else S_YNO("dnstap-send-version:", dnstap_send_version) 711 else S_STR("dnstap-identity:", dnstap_identity) 712 else S_STR("dnstap-version:", dnstap_version) 713 else S_YNO("dnstap-log-resolver-query-messages:", 714 dnstap_log_resolver_query_messages) 715 else S_YNO("dnstap-log-resolver-response-messages:", 716 dnstap_log_resolver_response_messages) 717 else S_YNO("dnstap-log-client-query-messages:", 718 dnstap_log_client_query_messages) 719 else S_YNO("dnstap-log-client-response-messages:", 720 dnstap_log_client_response_messages) 721 else S_YNO("dnstap-log-forwarder-query-messages:", 722 dnstap_log_forwarder_query_messages) 723 else S_YNO("dnstap-log-forwarder-response-messages:", 724 dnstap_log_forwarder_response_messages) 725 #endif 726 #ifdef USE_DNSCRYPT 727 else S_YNO("dnscrypt-enable:", dnscrypt) 728 else S_NUMBER_NONZERO("dnscrypt-port:", dnscrypt_port) 729 else S_STR("dnscrypt-provider:", dnscrypt_provider) 730 else S_STRLIST_UNIQ("dnscrypt-provider-cert:", dnscrypt_provider_cert) 731 else S_STRLIST("dnscrypt-provider-cert-rotated:", dnscrypt_provider_cert_rotated) 732 else S_STRLIST_UNIQ("dnscrypt-secret-key:", dnscrypt_secret_key) 733 else S_MEMSIZE("dnscrypt-shared-secret-cache-size:", 734 dnscrypt_shared_secret_cache_size) 735 else S_POW2("dnscrypt-shared-secret-cache-slabs:", 736 dnscrypt_shared_secret_cache_slabs) 737 else S_MEMSIZE("dnscrypt-nonce-cache-size:", 738 dnscrypt_nonce_cache_size) 739 else S_POW2("dnscrypt-nonce-cache-slabs:", 740 dnscrypt_nonce_cache_slabs) 741 #endif 742 else if(strcmp(opt, "ip-ratelimit:") == 0) { 743 IS_NUMBER_OR_ZERO; cfg->ip_ratelimit = atoi(val); 744 infra_ip_ratelimit=cfg->ip_ratelimit; 745 } 746 else if(strcmp(opt, "ratelimit:") == 0) { 747 IS_NUMBER_OR_ZERO; cfg->ratelimit = atoi(val); 748 infra_dp_ratelimit=cfg->ratelimit; 749 } 750 else S_MEMSIZE("ip-ratelimit-size:", ip_ratelimit_size) 751 else S_MEMSIZE("ratelimit-size:", ratelimit_size) 752 else S_POW2("ip-ratelimit-slabs:", ip_ratelimit_slabs) 753 else S_POW2("ratelimit-slabs:", ratelimit_slabs) 754 else S_NUMBER_OR_ZERO("ip-ratelimit-factor:", ip_ratelimit_factor) 755 else S_NUMBER_OR_ZERO("ratelimit-factor:", ratelimit_factor) 756 else S_NUMBER_NONZERO("outbound-msg-retry:", outbound_msg_retry) 757 else S_SIZET_NONZERO("fast-server-num:", fast_server_num) 758 else S_NUMBER_OR_ZERO("fast-server-permil:", fast_server_permil) 759 else S_YNO("qname-minimisation:", qname_minimisation) 760 else S_YNO("qname-minimisation-strict:", qname_minimisation_strict) 761 else S_YNO("pad-responses:", pad_responses) 762 else S_SIZET_NONZERO("pad-responses-block-size:", pad_responses_block_size) 763 else S_YNO("pad-queries:", pad_queries) 764 else S_SIZET_NONZERO("pad-queries-block-size:", pad_queries_block_size) 765 #ifdef USE_IPSECMOD 766 else S_YNO("ipsecmod-enabled:", ipsecmod_enabled) 767 else S_YNO("ipsecmod-ignore-bogus:", ipsecmod_ignore_bogus) 768 else if(strcmp(opt, "ipsecmod-max-ttl:") == 0) 769 { IS_NUMBER_OR_ZERO; cfg->ipsecmod_max_ttl = atoi(val); } 770 else S_YNO("ipsecmod-strict:", ipsecmod_strict) 771 #endif 772 else if(strcmp(opt, "define-tag:") ==0) { 773 return config_add_tag(cfg, val); 774 /* val_sig_skew_min, max and val_max_restart are copied into val_env 775 * during init so this does not update val_env with set_option */ 776 } else if(strcmp(opt, "val-sig-skew-min:") == 0) 777 { IS_NUMBER_OR_ZERO; cfg->val_sig_skew_min = (int32_t)atoi(val); } 778 else if(strcmp(opt, "val-sig-skew-max:") == 0) 779 { IS_NUMBER_OR_ZERO; cfg->val_sig_skew_max = (int32_t)atoi(val); } 780 else if(strcmp(opt, "val-max-restart:") == 0) 781 { IS_NUMBER_OR_ZERO; cfg->val_max_restart = (int32_t)atoi(val); } 782 else if (strcmp(opt, "outgoing-interface:") == 0) { 783 char* d = strdup(val); 784 char** oi = 785 (char**)reallocarray(NULL, (size_t)cfg->num_out_ifs+1, sizeof(char*)); 786 if(!d || !oi) { free(d); free(oi); return -1; } 787 if(cfg->out_ifs && cfg->num_out_ifs) { 788 memmove(oi, cfg->out_ifs, cfg->num_out_ifs*sizeof(char*)); 789 free(cfg->out_ifs); 790 } 791 oi[cfg->num_out_ifs++] = d; 792 cfg->out_ifs = oi; 793 } else { 794 /* unknown or unsupported (from the set_option interface): 795 * interface, outgoing-interface, access-control, 796 * stub-zone, name, stub-addr, stub-host, stub-prime 797 * forward-first, stub-first, forward-ssl-upstream, 798 * stub-ssl-upstream, forward-zone, auth-zone 799 * name, forward-addr, forward-host, 800 * ratelimit-for-domain, ratelimit-below-domain, 801 * local-zone-tag, access-control-view, 802 * send-client-subnet, client-subnet-always-forward, 803 * max-client-subnet-ipv4, max-client-subnet-ipv6, 804 * min-client-subnet-ipv4, min-client-subnet-ipv6, 805 * max-ecs-tree-size-ipv4, max-ecs-tree-size-ipv6, ipsecmod_hook, 806 * ipsecmod_whitelist. */ 807 return 0; 808 } 809 return 1; 810 } 811 812 void config_print_func(char* line, void* arg) 813 { 814 FILE* f = (FILE*)arg; 815 (void)fprintf(f, "%s\n", line); 816 } 817 818 /** collate func arg */ 819 struct config_collate_arg { 820 /** list of result items */ 821 struct config_strlist_head list; 822 /** if a malloc error occurred, 0 is OK */ 823 int status; 824 }; 825 826 void config_collate_func(char* line, void* arg) 827 { 828 struct config_collate_arg* m = (struct config_collate_arg*)arg; 829 if(m->status) 830 return; 831 if(!cfg_strlist_append(&m->list, strdup(line))) 832 m->status = 1; 833 } 834 835 int config_get_option_list(struct config_file* cfg, const char* opt, 836 struct config_strlist** list) 837 { 838 struct config_collate_arg m; 839 memset(&m, 0, sizeof(m)); 840 *list = NULL; 841 if(!config_get_option(cfg, opt, config_collate_func, &m)) 842 return 1; 843 if(m.status) { 844 config_delstrlist(m.list.first); 845 return 2; 846 } 847 *list = m.list.first; 848 return 0; 849 } 850 851 int 852 config_get_option_collate(struct config_file* cfg, const char* opt, char** str) 853 { 854 struct config_strlist* list = NULL; 855 int r; 856 *str = NULL; 857 if((r = config_get_option_list(cfg, opt, &list)) != 0) 858 return r; 859 *str = config_collate_cat(list); 860 config_delstrlist(list); 861 if(!*str) return 2; 862 return 0; 863 } 864 865 char* 866 config_collate_cat(struct config_strlist* list) 867 { 868 size_t total = 0, left; 869 struct config_strlist* s; 870 char *r, *w; 871 if(!list) /* no elements */ 872 return strdup(""); 873 if(list->next == NULL) /* one element , no newline at end. */ 874 return strdup(list->str); 875 /* count total length */ 876 for(s=list; s; s=s->next) 877 total += strlen(s->str) + 1; /* len + newline */ 878 left = total+1; /* one extra for nul at end */ 879 r = malloc(left); 880 if(!r) 881 return NULL; 882 w = r; 883 for(s=list; s; s=s->next) { 884 size_t this = strlen(s->str); 885 if(this+2 > left) { /* sanity check */ 886 free(r); 887 return NULL; 888 } 889 snprintf(w, left, "%s\n", s->str); 890 this = strlen(w); 891 w += this; 892 left -= this; 893 } 894 return r; 895 } 896 897 /** compare and print decimal option */ 898 #define O_DEC(opt, str, var) if(strcmp(opt, str)==0) \ 899 {snprintf(buf, len, "%d", (int)cfg->var); \ 900 func(buf, arg);} 901 /** compare and print unsigned option */ 902 #define O_UNS(opt, str, var) if(strcmp(opt, str)==0) \ 903 {snprintf(buf, len, "%u", (unsigned)cfg->var); \ 904 func(buf, arg);} 905 /** compare and print yesno option */ 906 #define O_YNO(opt, str, var) if(strcmp(opt, str)==0) \ 907 {func(cfg->var?"yes":"no", arg);} 908 /** compare and print string option */ 909 #define O_STR(opt, str, var) if(strcmp(opt, str)==0) \ 910 {func(cfg->var?cfg->var:"", arg);} 911 /** compare and print array option */ 912 #define O_IFC(opt, str, num, arr) if(strcmp(opt, str)==0) \ 913 {int i; for(i=0; i<cfg->num; i++) func(cfg->arr[i], arg);} 914 /** compare and print memorysize option */ 915 #define O_MEM(opt, str, var) if(strcmp(opt, str)==0) { \ 916 if(cfg->var > 1024*1024*1024) { \ 917 size_t f=cfg->var/(size_t)1000000, b=cfg->var%(size_t)1000000; \ 918 snprintf(buf, len, "%u%6.6u", (unsigned)f, (unsigned)b); \ 919 } else snprintf(buf, len, "%u", (unsigned)cfg->var); \ 920 func(buf, arg);} 921 /** compare and print list option */ 922 #define O_LST(opt, name, lst) if(strcmp(opt, name)==0) { \ 923 struct config_strlist* p = cfg->lst; \ 924 for(p = cfg->lst; p; p = p->next) \ 925 func(p->str, arg); \ 926 } 927 /** compare and print list option */ 928 #define O_LS2(opt, name, lst) if(strcmp(opt, name)==0) { \ 929 struct config_str2list* p = cfg->lst; \ 930 for(p = cfg->lst; p; p = p->next) { \ 931 snprintf(buf, len, "%s %s", p->str, p->str2); \ 932 func(buf, arg); \ 933 } \ 934 } 935 /** compare and print list option */ 936 #define O_LS3(opt, name, lst) if(strcmp(opt, name)==0) { \ 937 struct config_str3list* p = cfg->lst; \ 938 for(p = cfg->lst; p; p = p->next) { \ 939 snprintf(buf, len, "%s %s %s", p->str, p->str2, p->str3); \ 940 func(buf, arg); \ 941 } \ 942 } 943 /** compare and print taglist option */ 944 #define O_LTG(opt, name, lst) if(strcmp(opt, name)==0) { \ 945 char* tmpstr = NULL; \ 946 struct config_strbytelist *p = cfg->lst; \ 947 for(p = cfg->lst; p; p = p->next) {\ 948 tmpstr = config_taglist2str(cfg, p->str2, p->str2len); \ 949 if(tmpstr) {\ 950 snprintf(buf, len, "%s %s", p->str, tmpstr); \ 951 func(buf, arg); \ 952 free(tmpstr); \ 953 } \ 954 } \ 955 } 956 957 int 958 config_get_option(struct config_file* cfg, const char* opt, 959 void (*func)(char*,void*), void* arg) 960 { 961 char buf[1024], nopt[64]; 962 size_t len = sizeof(buf); 963 if(!opt) return 0; 964 if(opt && opt[strlen(opt)-1] == ':' && strlen(opt)<sizeof(nopt)) { 965 memmove(nopt, opt, strlen(opt)); 966 nopt[strlen(opt)-1] = 0; 967 opt = nopt; 968 } 969 fptr_ok(fptr_whitelist_print_func(func)); 970 O_DEC(opt, "verbosity", verbosity) 971 else O_DEC(opt, "statistics-interval", stat_interval) 972 else O_YNO(opt, "statistics-cumulative", stat_cumulative) 973 else O_YNO(opt, "extended-statistics", stat_extended) 974 else O_YNO(opt, "shm-enable", shm_enable) 975 else O_DEC(opt, "shm-key", shm_key) 976 else O_YNO(opt, "use-syslog", use_syslog) 977 else O_STR(opt, "log-identity", log_identity) 978 else O_YNO(opt, "log-time-ascii", log_time_ascii) 979 else O_DEC(opt, "num-threads", num_threads) 980 else O_IFC(opt, "interface", num_ifs, ifs) 981 else O_IFC(opt, "outgoing-interface", num_out_ifs, out_ifs) 982 else O_YNO(opt, "interface-automatic", if_automatic) 983 else O_DEC(opt, "port", port) 984 else O_DEC(opt, "outgoing-range", outgoing_num_ports) 985 else O_DEC(opt, "outgoing-num-tcp", outgoing_num_tcp) 986 else O_DEC(opt, "incoming-num-tcp", incoming_num_tcp) 987 else O_MEM(opt, "stream-wait-size", stream_wait_size) 988 else O_DEC(opt, "edns-buffer-size", edns_buffer_size) 989 else O_DEC(opt, "msg-buffer-size", msg_buffer_size) 990 else O_MEM(opt, "msg-cache-size", msg_cache_size) 991 else O_DEC(opt, "msg-cache-slabs", msg_cache_slabs) 992 else O_DEC(opt, "num-queries-per-thread", num_queries_per_thread) 993 else O_UNS(opt, "jostle-timeout", jostle_time) 994 else O_MEM(opt, "so-rcvbuf", so_rcvbuf) 995 else O_MEM(opt, "so-sndbuf", so_sndbuf) 996 else O_YNO(opt, "so-reuseport", so_reuseport) 997 else O_YNO(opt, "ip-transparent", ip_transparent) 998 else O_YNO(opt, "ip-freebind", ip_freebind) 999 else O_DEC(opt, "ip-dscp", ip_dscp) 1000 else O_MEM(opt, "rrset-cache-size", rrset_cache_size) 1001 else O_DEC(opt, "rrset-cache-slabs", rrset_cache_slabs) 1002 else O_YNO(opt, "prefetch-key", prefetch_key) 1003 else O_YNO(opt, "prefetch", prefetch) 1004 else O_YNO(opt, "deny-any", deny_any) 1005 else O_DEC(opt, "cache-max-ttl", max_ttl) 1006 else O_DEC(opt, "cache-max-negative-ttl", max_negative_ttl) 1007 else O_DEC(opt, "cache-min-ttl", min_ttl) 1008 else O_DEC(opt, "infra-host-ttl", host_ttl) 1009 else O_DEC(opt, "infra-cache-slabs", infra_cache_slabs) 1010 else O_DEC(opt, "infra-cache-min-rtt", infra_cache_min_rtt) 1011 else O_YNO(opt, "infra-keep-probing", infra_keep_probing) 1012 else O_MEM(opt, "infra-cache-numhosts", infra_cache_numhosts) 1013 else O_UNS(opt, "delay-close", delay_close) 1014 else O_YNO(opt, "udp-connect", udp_connect) 1015 else O_YNO(opt, "do-ip4", do_ip4) 1016 else O_YNO(opt, "do-ip6", do_ip6) 1017 else O_YNO(opt, "do-udp", do_udp) 1018 else O_YNO(opt, "do-tcp", do_tcp) 1019 else O_YNO(opt, "prefer-ip4", prefer_ip4) 1020 else O_YNO(opt, "prefer-ip6", prefer_ip6) 1021 else O_YNO(opt, "tcp-upstream", tcp_upstream) 1022 else O_YNO(opt, "udp-upstream-without-downstream", udp_upstream_without_downstream) 1023 else O_DEC(opt, "tcp-mss", tcp_mss) 1024 else O_DEC(opt, "outgoing-tcp-mss", outgoing_tcp_mss) 1025 else O_DEC(opt, "tcp-auth-query-timeout", tcp_auth_query_timeout) 1026 else O_DEC(opt, "tcp-idle-timeout", tcp_idle_timeout) 1027 else O_DEC(opt, "max-reuse-tcp-queries", max_reuse_tcp_queries) 1028 else O_DEC(opt, "tcp-reuse-timeout", tcp_reuse_timeout) 1029 else O_YNO(opt, "edns-tcp-keepalive", do_tcp_keepalive) 1030 else O_DEC(opt, "edns-tcp-keepalive-timeout", tcp_keepalive_timeout) 1031 else O_YNO(opt, "ssl-upstream", ssl_upstream) 1032 else O_STR(opt, "ssl-service-key", ssl_service_key) 1033 else O_STR(opt, "ssl-service-pem", ssl_service_pem) 1034 else O_DEC(opt, "ssl-port", ssl_port) 1035 else O_STR(opt, "tls-cert-bundle", tls_cert_bundle) 1036 else O_YNO(opt, "tls-win-cert", tls_win_cert) 1037 else O_LST(opt, "tls-additional-port", tls_additional_port) 1038 else O_LST(opt, "tls-session-ticket-keys", tls_session_ticket_keys.first) 1039 else O_STR(opt, "tls-ciphers", tls_ciphers) 1040 else O_STR(opt, "tls-ciphersuites", tls_ciphersuites) 1041 else O_YNO(opt, "tls-use-sni", tls_use_sni) 1042 else O_DEC(opt, "https-port", https_port) 1043 else O_STR(opt, "http-endpoint", http_endpoint) 1044 else O_UNS(opt, "http-max-streams", http_max_streams) 1045 else O_MEM(opt, "http-query-buffer-size", http_query_buffer_size) 1046 else O_MEM(opt, "http-response-buffer-size", http_response_buffer_size) 1047 else O_YNO(opt, "http-nodelay", http_nodelay) 1048 else O_YNO(opt, "http-notls-downstream", http_notls_downstream) 1049 else O_YNO(opt, "use-systemd", use_systemd) 1050 else O_YNO(opt, "do-daemonize", do_daemonize) 1051 else O_STR(opt, "chroot", chrootdir) 1052 else O_STR(opt, "username", username) 1053 else O_STR(opt, "directory", directory) 1054 else O_STR(opt, "logfile", logfile) 1055 else O_YNO(opt, "log-queries", log_queries) 1056 else O_YNO(opt, "log-replies", log_replies) 1057 else O_YNO(opt, "log-tag-queryreply", log_tag_queryreply) 1058 else O_YNO(opt, "log-local-actions", log_local_actions) 1059 else O_YNO(opt, "log-servfail", log_servfail) 1060 else O_STR(opt, "pidfile", pidfile) 1061 else O_YNO(opt, "hide-identity", hide_identity) 1062 else O_YNO(opt, "hide-version", hide_version) 1063 else O_YNO(opt, "hide-trustanchor", hide_trustanchor) 1064 else O_YNO(opt, "hide-http-user-agent", hide_http_user_agent) 1065 else O_STR(opt, "identity", identity) 1066 else O_STR(opt, "version", version) 1067 else O_STR(opt, "http-user-agent", http_user_agent) 1068 else O_STR(opt, "nsid", nsid_cfg_str) 1069 else O_STR(opt, "target-fetch-policy", target_fetch_policy) 1070 else O_YNO(opt, "harden-short-bufsize", harden_short_bufsize) 1071 else O_YNO(opt, "harden-large-queries", harden_large_queries) 1072 else O_YNO(opt, "harden-glue", harden_glue) 1073 else O_YNO(opt, "harden-dnssec-stripped", harden_dnssec_stripped) 1074 else O_YNO(opt, "harden-below-nxdomain", harden_below_nxdomain) 1075 else O_YNO(opt, "harden-referral-path", harden_referral_path) 1076 else O_YNO(opt, "harden-algo-downgrade", harden_algo_downgrade) 1077 else O_YNO(opt, "use-caps-for-id", use_caps_bits_for_id) 1078 else O_LST(opt, "caps-whitelist", caps_whitelist) 1079 else O_DEC(opt, "unwanted-reply-threshold", unwanted_threshold) 1080 else O_YNO(opt, "do-not-query-localhost", donotquery_localhost) 1081 else O_STR(opt, "module-config", module_conf) 1082 else O_DEC(opt, "val-bogus-ttl", bogus_ttl) 1083 else O_YNO(opt, "val-clean-additional", val_clean_additional) 1084 else O_DEC(opt, "val-log-level", val_log_level) 1085 else O_YNO(opt, "val-permissive-mode", val_permissive_mode) 1086 else O_YNO(opt, "aggressive-nsec", aggressive_nsec) 1087 else O_YNO(opt, "ignore-cd-flag", ignore_cd) 1088 else O_YNO(opt, "serve-expired", serve_expired) 1089 else O_DEC(opt, "serve-expired-ttl", serve_expired_ttl) 1090 else O_YNO(opt, "serve-expired-ttl-reset", serve_expired_ttl_reset) 1091 else O_DEC(opt, "serve-expired-reply-ttl", serve_expired_reply_ttl) 1092 else O_DEC(opt, "serve-expired-client-timeout", serve_expired_client_timeout) 1093 else O_YNO(opt, "serve-original-ttl", serve_original_ttl) 1094 else O_STR(opt, "val-nsec3-keysize-iterations",val_nsec3_key_iterations) 1095 else O_YNO(opt, "zonemd-permissive-mode", zonemd_permissive_mode) 1096 else O_UNS(opt, "add-holddown", add_holddown) 1097 else O_UNS(opt, "del-holddown", del_holddown) 1098 else O_UNS(opt, "keep-missing", keep_missing) 1099 else O_YNO(opt, "permit-small-holddown", permit_small_holddown) 1100 else O_MEM(opt, "key-cache-size", key_cache_size) 1101 else O_DEC(opt, "key-cache-slabs", key_cache_slabs) 1102 else O_MEM(opt, "neg-cache-size", neg_cache_size) 1103 else O_YNO(opt, "control-enable", remote_control_enable) 1104 else O_DEC(opt, "control-port", control_port) 1105 else O_STR(opt, "server-key-file", server_key_file) 1106 else O_STR(opt, "server-cert-file", server_cert_file) 1107 else O_STR(opt, "control-key-file", control_key_file) 1108 else O_STR(opt, "control-cert-file", control_cert_file) 1109 else O_LST(opt, "root-hints", root_hints) 1110 else O_LS2(opt, "access-control", acls) 1111 else O_LS2(opt, "tcp-connection-limit", tcp_connection_limits) 1112 else O_LST(opt, "do-not-query-address", donotqueryaddrs) 1113 else O_LST(opt, "private-address", private_address) 1114 else O_LST(opt, "private-domain", private_domain) 1115 else O_LST(opt, "auto-trust-anchor-file", auto_trust_anchor_file_list) 1116 else O_LST(opt, "trust-anchor-file", trust_anchor_file_list) 1117 else O_LST(opt, "trust-anchor", trust_anchor_list) 1118 else O_LST(opt, "trusted-keys-file", trusted_keys_file_list) 1119 else O_YNO(opt, "trust-anchor-signaling", trust_anchor_signaling) 1120 else O_YNO(opt, "root-key-sentinel", root_key_sentinel) 1121 else O_LST(opt, "control-interface", control_ifs.first) 1122 else O_LST(opt, "domain-insecure", domain_insecure) 1123 else O_UNS(opt, "val-override-date", val_date_override) 1124 else O_YNO(opt, "minimal-responses", minimal_responses) 1125 else O_YNO(opt, "rrset-roundrobin", rrset_roundrobin) 1126 else O_DEC(opt, "unknown-server-time-limit", unknown_server_time_limit) 1127 #ifdef CLIENT_SUBNET 1128 else O_LST(opt, "send-client-subnet", client_subnet) 1129 else O_LST(opt, "client-subnet-zone", client_subnet_zone) 1130 else O_DEC(opt, "max-client-subnet-ipv4", max_client_subnet_ipv4) 1131 else O_DEC(opt, "max-client-subnet-ipv6", max_client_subnet_ipv6) 1132 else O_DEC(opt, "min-client-subnet-ipv4", min_client_subnet_ipv4) 1133 else O_DEC(opt, "min-client-subnet-ipv6", min_client_subnet_ipv6) 1134 else O_DEC(opt, "max-ecs-tree-size-ipv4", max_ecs_tree_size_ipv4) 1135 else O_DEC(opt, "max-ecs-tree-size-ipv6", max_ecs_tree_size_ipv6) 1136 else O_YNO(opt, "client-subnet-always-forward:", 1137 client_subnet_always_forward) 1138 #endif 1139 #ifdef USE_DNSTAP 1140 else O_YNO(opt, "dnstap-enable", dnstap) 1141 else O_YNO(opt, "dnstap-bidirectional", dnstap_bidirectional) 1142 else O_STR(opt, "dnstap-socket-path", dnstap_socket_path) 1143 else O_STR(opt, "dnstap-ip", dnstap_ip) 1144 else O_YNO(opt, "dnstap-tls", dnstap_tls) 1145 else O_STR(opt, "dnstap-tls-server-name", dnstap_tls_server_name) 1146 else O_STR(opt, "dnstap-tls-cert-bundle", dnstap_tls_cert_bundle) 1147 else O_STR(opt, "dnstap-tls-client-key-file", 1148 dnstap_tls_client_key_file) 1149 else O_STR(opt, "dnstap-tls-client-cert-file", 1150 dnstap_tls_client_cert_file) 1151 else O_YNO(opt, "dnstap-send-identity", dnstap_send_identity) 1152 else O_YNO(opt, "dnstap-send-version", dnstap_send_version) 1153 else O_STR(opt, "dnstap-identity", dnstap_identity) 1154 else O_STR(opt, "dnstap-version", dnstap_version) 1155 else O_YNO(opt, "dnstap-log-resolver-query-messages", 1156 dnstap_log_resolver_query_messages) 1157 else O_YNO(opt, "dnstap-log-resolver-response-messages", 1158 dnstap_log_resolver_response_messages) 1159 else O_YNO(opt, "dnstap-log-client-query-messages", 1160 dnstap_log_client_query_messages) 1161 else O_YNO(opt, "dnstap-log-client-response-messages", 1162 dnstap_log_client_response_messages) 1163 else O_YNO(opt, "dnstap-log-forwarder-query-messages", 1164 dnstap_log_forwarder_query_messages) 1165 else O_YNO(opt, "dnstap-log-forwarder-response-messages", 1166 dnstap_log_forwarder_response_messages) 1167 #endif 1168 #ifdef USE_DNSCRYPT 1169 else O_YNO(opt, "dnscrypt-enable", dnscrypt) 1170 else O_DEC(opt, "dnscrypt-port", dnscrypt_port) 1171 else O_STR(opt, "dnscrypt-provider", dnscrypt_provider) 1172 else O_LST(opt, "dnscrypt-provider-cert", dnscrypt_provider_cert) 1173 else O_LST(opt, "dnscrypt-provider-cert-rotated", dnscrypt_provider_cert_rotated) 1174 else O_LST(opt, "dnscrypt-secret-key", dnscrypt_secret_key) 1175 else O_MEM(opt, "dnscrypt-shared-secret-cache-size", 1176 dnscrypt_shared_secret_cache_size) 1177 else O_DEC(opt, "dnscrypt-shared-secret-cache-slabs", 1178 dnscrypt_shared_secret_cache_slabs) 1179 else O_MEM(opt, "dnscrypt-nonce-cache-size", 1180 dnscrypt_nonce_cache_size) 1181 else O_DEC(opt, "dnscrypt-nonce-cache-slabs", 1182 dnscrypt_nonce_cache_slabs) 1183 #endif 1184 else O_YNO(opt, "unblock-lan-zones", unblock_lan_zones) 1185 else O_YNO(opt, "insecure-lan-zones", insecure_lan_zones) 1186 else O_DEC(opt, "max-udp-size", max_udp_size) 1187 else O_LST(opt, "python-script", python_script) 1188 else O_LST(opt, "dynlib-file", dynlib_file) 1189 else O_YNO(opt, "disable-dnssec-lame-check", disable_dnssec_lame_check) 1190 else O_DEC(opt, "ip-ratelimit", ip_ratelimit) 1191 else O_DEC(opt, "ratelimit", ratelimit) 1192 else O_MEM(opt, "ip-ratelimit-size", ip_ratelimit_size) 1193 else O_MEM(opt, "ratelimit-size", ratelimit_size) 1194 else O_DEC(opt, "ip-ratelimit-slabs", ip_ratelimit_slabs) 1195 else O_DEC(opt, "ratelimit-slabs", ratelimit_slabs) 1196 else O_LS2(opt, "ratelimit-for-domain", ratelimit_for_domain) 1197 else O_LS2(opt, "ratelimit-below-domain", ratelimit_below_domain) 1198 else O_DEC(opt, "ip-ratelimit-factor", ip_ratelimit_factor) 1199 else O_DEC(opt, "ratelimit-factor", ratelimit_factor) 1200 else O_UNS(opt, "outbound-msg-retry", outbound_msg_retry) 1201 else O_DEC(opt, "fast-server-num", fast_server_num) 1202 else O_DEC(opt, "fast-server-permil", fast_server_permil) 1203 else O_DEC(opt, "val-sig-skew-min", val_sig_skew_min) 1204 else O_DEC(opt, "val-sig-skew-max", val_sig_skew_max) 1205 else O_DEC(opt, "val-max-restart", val_max_restart) 1206 else O_YNO(opt, "qname-minimisation", qname_minimisation) 1207 else O_YNO(opt, "qname-minimisation-strict", qname_minimisation_strict) 1208 else O_IFC(opt, "define-tag", num_tags, tagname) 1209 else O_LTG(opt, "local-zone-tag", local_zone_tags) 1210 else O_LTG(opt, "access-control-tag", acl_tags) 1211 else O_LTG(opt, "response-ip-tag", respip_tags) 1212 else O_LS3(opt, "local-zone-override", local_zone_overrides) 1213 else O_LS3(opt, "access-control-tag-action", acl_tag_actions) 1214 else O_LS3(opt, "access-control-tag-data", acl_tag_datas) 1215 else O_LS2(opt, "access-control-view", acl_view) 1216 else O_YNO(opt, "pad-responses", pad_responses) 1217 else O_DEC(opt, "pad-responses-block-size", pad_responses_block_size) 1218 else O_YNO(opt, "pad-queries", pad_queries) 1219 else O_DEC(opt, "pad-queries-block-size", pad_queries_block_size) 1220 else O_LS2(opt, "edns-client-strings", edns_client_strings) 1221 #ifdef USE_IPSECMOD 1222 else O_YNO(opt, "ipsecmod-enabled", ipsecmod_enabled) 1223 else O_YNO(opt, "ipsecmod-ignore-bogus", ipsecmod_ignore_bogus) 1224 else O_STR(opt, "ipsecmod-hook", ipsecmod_hook) 1225 else O_DEC(opt, "ipsecmod-max-ttl", ipsecmod_max_ttl) 1226 else O_LST(opt, "ipsecmod-whitelist", ipsecmod_whitelist) 1227 else O_YNO(opt, "ipsecmod-strict", ipsecmod_strict) 1228 #endif 1229 #ifdef USE_CACHEDB 1230 else O_STR(opt, "backend", cachedb_backend) 1231 else O_STR(opt, "secret-seed", cachedb_secret) 1232 #ifdef USE_REDIS 1233 else O_STR(opt, "redis-server-host", redis_server_host) 1234 else O_DEC(opt, "redis-server-port", redis_server_port) 1235 else O_DEC(opt, "redis-timeout", redis_timeout) 1236 else O_YNO(opt, "redis-expire-records", redis_expire_records) 1237 #endif /* USE_REDIS */ 1238 #endif /* USE_CACHEDB */ 1239 #ifdef USE_IPSET 1240 else O_STR(opt, "name-v4", ipset_name_v4) 1241 else O_STR(opt, "name-v6", ipset_name_v6) 1242 #endif 1243 /* not here: 1244 * outgoing-permit, outgoing-avoid - have list of ports 1245 * local-zone - zones and nodefault variables 1246 * local-data - see below 1247 * local-data-ptr - converted to local-data entries 1248 * stub-zone, name, stub-addr, stub-host, stub-prime 1249 * forward-zone, name, forward-addr, forward-host 1250 */ 1251 else return 0; 1252 return 1; 1253 } 1254 1255 /** initialize the global cfg_parser object */ 1256 static void 1257 create_cfg_parser(struct config_file* cfg, char* filename, const char* chroot) 1258 { 1259 static struct config_parser_state st; 1260 cfg_parser = &st; 1261 cfg_parser->filename = filename; 1262 cfg_parser->line = 1; 1263 cfg_parser->errors = 0; 1264 cfg_parser->cfg = cfg; 1265 cfg_parser->chroot = chroot; 1266 init_cfg_parse(); 1267 } 1268 1269 int 1270 config_read(struct config_file* cfg, const char* filename, const char* chroot) 1271 { 1272 FILE *in; 1273 char *fname = (char*)filename; 1274 #ifdef HAVE_GLOB 1275 glob_t g; 1276 size_t i; 1277 int r, flags; 1278 #endif 1279 if(!fname) 1280 return 1; 1281 1282 /* check for wildcards */ 1283 #ifdef HAVE_GLOB 1284 if(!(!strchr(fname, '*') && !strchr(fname, '?') && !strchr(fname, '[') && 1285 !strchr(fname, '{') && !strchr(fname, '~'))) { 1286 verbose(VERB_QUERY, "wildcard found, processing %s", fname); 1287 flags = 0 1288 #ifdef GLOB_ERR 1289 | GLOB_ERR 1290 #endif 1291 #ifdef GLOB_NOSORT 1292 | GLOB_NOSORT 1293 #endif 1294 #ifdef GLOB_BRACE 1295 | GLOB_BRACE 1296 #endif 1297 #ifdef GLOB_TILDE 1298 | GLOB_TILDE 1299 #endif 1300 ; 1301 memset(&g, 0, sizeof(g)); 1302 r = glob(fname, flags, NULL, &g); 1303 if(r) { 1304 /* some error */ 1305 globfree(&g); 1306 if(r == GLOB_NOMATCH) { 1307 verbose(VERB_QUERY, "include: " 1308 "no matches for %s", fname); 1309 return 1; 1310 } else if(r == GLOB_NOSPACE) { 1311 log_err("include: %s: " 1312 "fnametern out of memory", fname); 1313 } else if(r == GLOB_ABORTED) { 1314 log_err("wildcard include: %s: expansion " 1315 "aborted (%s)", fname, strerror(errno)); 1316 } else { 1317 log_err("wildcard include: %s: expansion " 1318 "failed (%s)", fname, strerror(errno)); 1319 } 1320 /* ignore globs that yield no files */ 1321 return 1; 1322 } 1323 /* process files found, if any */ 1324 for(i=0; i<(size_t)g.gl_pathc; i++) { 1325 if(!config_read(cfg, g.gl_pathv[i], chroot)) { 1326 log_err("error reading wildcard " 1327 "include: %s", g.gl_pathv[i]); 1328 globfree(&g); 1329 return 0; 1330 } 1331 } 1332 globfree(&g); 1333 return 1; 1334 } 1335 #endif /* HAVE_GLOB */ 1336 1337 in = fopen(fname, "r"); 1338 if(!in) { 1339 log_err("Could not open %s: %s", fname, strerror(errno)); 1340 return 0; 1341 } 1342 create_cfg_parser(cfg, fname, chroot); 1343 ub_c_in = in; 1344 ub_c_parse(); 1345 fclose(in); 1346 1347 if(!cfg->dnscrypt) cfg->dnscrypt_port = 0; 1348 1349 if(cfg_parser->errors != 0) { 1350 fprintf(stderr, "read %s failed: %d errors in configuration file\n", 1351 fname, cfg_parser->errors); 1352 errno=EINVAL; 1353 return 0; 1354 } 1355 1356 return 1; 1357 } 1358 1359 struct config_stub* cfg_stub_find(struct config_stub*** pp, const char* nm) 1360 { 1361 struct config_stub* p = *(*pp); 1362 while(p) { 1363 if(strcmp(p->name, nm) == 0) 1364 return p; 1365 (*pp) = &p->next; 1366 p = p->next; 1367 } 1368 return NULL; 1369 } 1370 1371 void 1372 config_delstrlist(struct config_strlist* p) 1373 { 1374 struct config_strlist *np; 1375 while(p) { 1376 np = p->next; 1377 free(p->str); 1378 free(p); 1379 p = np; 1380 } 1381 } 1382 1383 void 1384 config_deldblstrlist(struct config_str2list* p) 1385 { 1386 struct config_str2list *np; 1387 while(p) { 1388 np = p->next; 1389 free(p->str); 1390 free(p->str2); 1391 free(p); 1392 p = np; 1393 } 1394 } 1395 1396 void 1397 config_deltrplstrlist(struct config_str3list* p) 1398 { 1399 struct config_str3list *np; 1400 while(p) { 1401 np = p->next; 1402 free(p->str); 1403 free(p->str2); 1404 free(p->str3); 1405 free(p); 1406 p = np; 1407 } 1408 } 1409 1410 void 1411 config_delauth(struct config_auth* p) 1412 { 1413 if(!p) return; 1414 free(p->name); 1415 config_delstrlist(p->masters); 1416 config_delstrlist(p->urls); 1417 config_delstrlist(p->allow_notify); 1418 free(p->zonefile); 1419 free(p->rpz_taglist); 1420 free(p->rpz_action_override); 1421 free(p->rpz_cname); 1422 free(p->rpz_log_name); 1423 free(p); 1424 } 1425 1426 void 1427 config_delauths(struct config_auth* p) 1428 { 1429 struct config_auth* np; 1430 while(p) { 1431 np = p->next; 1432 config_delauth(p); 1433 p = np; 1434 } 1435 } 1436 1437 void 1438 config_delstub(struct config_stub* p) 1439 { 1440 if(!p) return; 1441 free(p->name); 1442 config_delstrlist(p->hosts); 1443 config_delstrlist(p->addrs); 1444 free(p); 1445 } 1446 1447 void 1448 config_delstubs(struct config_stub* p) 1449 { 1450 struct config_stub* np; 1451 while(p) { 1452 np = p->next; 1453 config_delstub(p); 1454 p = np; 1455 } 1456 } 1457 1458 void 1459 config_delview(struct config_view* p) 1460 { 1461 if(!p) return; 1462 free(p->name); 1463 config_deldblstrlist(p->local_zones); 1464 config_delstrlist(p->local_zones_nodefault); 1465 #ifdef USE_IPSET 1466 config_delstrlist(p->local_zones_ipset); 1467 #endif 1468 config_delstrlist(p->local_data); 1469 free(p); 1470 } 1471 1472 void 1473 config_delviews(struct config_view* p) 1474 { 1475 struct config_view* np; 1476 while(p) { 1477 np = p->next; 1478 config_delview(p); 1479 p = np; 1480 } 1481 } 1482 1483 void 1484 config_del_strarray(char** array, int num) 1485 { 1486 int i; 1487 if(!array) 1488 return; 1489 for(i=0; i<num; i++) { 1490 free(array[i]); 1491 } 1492 free(array); 1493 } 1494 1495 void 1496 config_del_strbytelist(struct config_strbytelist* p) 1497 { 1498 struct config_strbytelist* np; 1499 while(p) { 1500 np = p->next; 1501 free(p->str); 1502 free(p->str2); 1503 free(p); 1504 p = np; 1505 } 1506 } 1507 1508 void 1509 config_delete(struct config_file* cfg) 1510 { 1511 if(!cfg) return; 1512 free(cfg->username); 1513 free(cfg->chrootdir); 1514 free(cfg->directory); 1515 free(cfg->logfile); 1516 free(cfg->pidfile); 1517 free(cfg->target_fetch_policy); 1518 free(cfg->ssl_service_key); 1519 free(cfg->ssl_service_pem); 1520 free(cfg->tls_cert_bundle); 1521 config_delstrlist(cfg->tls_additional_port); 1522 config_delstrlist(cfg->tls_session_ticket_keys.first); 1523 free(cfg->tls_ciphers); 1524 free(cfg->tls_ciphersuites); 1525 free(cfg->http_endpoint); 1526 if(cfg->log_identity) { 1527 log_ident_revert_to_default(); 1528 free(cfg->log_identity); 1529 } 1530 config_del_strarray(cfg->ifs, cfg->num_ifs); 1531 config_del_strarray(cfg->out_ifs, cfg->num_out_ifs); 1532 config_delstubs(cfg->stubs); 1533 config_delstubs(cfg->forwards); 1534 config_delauths(cfg->auths); 1535 config_delviews(cfg->views); 1536 config_delstrlist(cfg->donotqueryaddrs); 1537 config_delstrlist(cfg->root_hints); 1538 #ifdef CLIENT_SUBNET 1539 config_delstrlist(cfg->client_subnet); 1540 config_delstrlist(cfg->client_subnet_zone); 1541 #endif 1542 free(cfg->identity); 1543 free(cfg->version); 1544 free(cfg->http_user_agent); 1545 free(cfg->nsid_cfg_str); 1546 free(cfg->nsid); 1547 free(cfg->module_conf); 1548 free(cfg->outgoing_avail_ports); 1549 config_delstrlist(cfg->caps_whitelist); 1550 config_delstrlist(cfg->private_address); 1551 config_delstrlist(cfg->private_domain); 1552 config_delstrlist(cfg->auto_trust_anchor_file_list); 1553 config_delstrlist(cfg->trust_anchor_file_list); 1554 config_delstrlist(cfg->trusted_keys_file_list); 1555 config_delstrlist(cfg->trust_anchor_list); 1556 config_delstrlist(cfg->domain_insecure); 1557 config_deldblstrlist(cfg->acls); 1558 config_deldblstrlist(cfg->tcp_connection_limits); 1559 free(cfg->val_nsec3_key_iterations); 1560 config_deldblstrlist(cfg->local_zones); 1561 config_delstrlist(cfg->local_zones_nodefault); 1562 #ifdef USE_IPSET 1563 config_delstrlist(cfg->local_zones_ipset); 1564 #endif 1565 config_delstrlist(cfg->local_data); 1566 config_deltrplstrlist(cfg->local_zone_overrides); 1567 config_del_strarray(cfg->tagname, cfg->num_tags); 1568 config_del_strbytelist(cfg->local_zone_tags); 1569 config_del_strbytelist(cfg->acl_tags); 1570 config_del_strbytelist(cfg->respip_tags); 1571 config_deltrplstrlist(cfg->acl_tag_actions); 1572 config_deltrplstrlist(cfg->acl_tag_datas); 1573 config_delstrlist(cfg->control_ifs.first); 1574 free(cfg->server_key_file); 1575 free(cfg->server_cert_file); 1576 free(cfg->control_key_file); 1577 free(cfg->control_cert_file); 1578 free(cfg->dns64_prefix); 1579 config_delstrlist(cfg->dns64_ignore_aaaa); 1580 free(cfg->dnstap_socket_path); 1581 free(cfg->dnstap_ip); 1582 free(cfg->dnstap_tls_server_name); 1583 free(cfg->dnstap_tls_cert_bundle); 1584 free(cfg->dnstap_tls_client_key_file); 1585 free(cfg->dnstap_tls_client_cert_file); 1586 free(cfg->dnstap_identity); 1587 free(cfg->dnstap_version); 1588 config_deldblstrlist(cfg->ratelimit_for_domain); 1589 config_deldblstrlist(cfg->ratelimit_below_domain); 1590 config_delstrlist(cfg->python_script); 1591 config_delstrlist(cfg->dynlib_file); 1592 config_deldblstrlist(cfg->edns_client_strings); 1593 #ifdef USE_IPSECMOD 1594 free(cfg->ipsecmod_hook); 1595 config_delstrlist(cfg->ipsecmod_whitelist); 1596 #endif 1597 #ifdef USE_CACHEDB 1598 free(cfg->cachedb_backend); 1599 free(cfg->cachedb_secret); 1600 #ifdef USE_REDIS 1601 free(cfg->redis_server_host); 1602 #endif /* USE_REDIS */ 1603 #endif /* USE_CACHEDB */ 1604 #ifdef USE_IPSET 1605 free(cfg->ipset_name_v4); 1606 free(cfg->ipset_name_v6); 1607 #endif 1608 free(cfg); 1609 } 1610 1611 static void 1612 init_outgoing_availports(int* a, int num) 1613 { 1614 /* generated with make iana_update */ 1615 const int iana_assigned[] = { 1616 #include "util/iana_ports.inc" 1617 -1 }; /* end marker to put behind trailing comma */ 1618 1619 int i; 1620 /* do not use <1024, that could be trouble with the system, privs */ 1621 for(i=1024; i<num; i++) { 1622 a[i] = i; 1623 } 1624 /* create empty spot at 49152 to keep ephemeral ports available 1625 * to other programs */ 1626 for(i=49152; i<49152+256; i++) 1627 a[i] = 0; 1628 /* pick out all the IANA assigned ports */ 1629 for(i=0; iana_assigned[i]!=-1; i++) { 1630 if(iana_assigned[i] < num) 1631 a[iana_assigned[i]] = 0; 1632 } 1633 } 1634 1635 int 1636 cfg_mark_ports(const char* str, int allow, int* avail, int num) 1637 { 1638 char* mid = strchr(str, '-'); 1639 #ifdef DISABLE_EXPLICIT_PORT_RANDOMISATION 1640 log_warn("Explicit port randomisation disabled, ignoring " 1641 "outgoing-port-permit and outgoing-port-avoid configuration " 1642 "options"); 1643 #endif 1644 if(!mid) { 1645 int port = atoi(str); 1646 if(port == 0 && strcmp(str, "0") != 0) { 1647 log_err("cannot parse port number '%s'", str); 1648 return 0; 1649 } 1650 if(port < num) 1651 avail[port] = (allow?port:0); 1652 } else { 1653 int i, low, high = atoi(mid+1); 1654 char buf[16]; 1655 if(high == 0 && strcmp(mid+1, "0") != 0) { 1656 log_err("cannot parse port number '%s'", mid+1); 1657 return 0; 1658 } 1659 if( (int)(mid-str)+1 >= (int)sizeof(buf) ) { 1660 log_err("cannot parse port number '%s'", str); 1661 return 0; 1662 } 1663 if(mid > str) 1664 memcpy(buf, str, (size_t)(mid-str)); 1665 buf[mid-str] = 0; 1666 low = atoi(buf); 1667 if(low == 0 && strcmp(buf, "0") != 0) { 1668 log_err("cannot parse port number '%s'", buf); 1669 return 0; 1670 } 1671 for(i=low; i<=high; i++) { 1672 if(i < num) 1673 avail[i] = (allow?i:0); 1674 } 1675 return 1; 1676 } 1677 return 1; 1678 } 1679 1680 int 1681 cfg_scan_ports(int* avail, int num) 1682 { 1683 int i; 1684 int count = 0; 1685 for(i=0; i<num; i++) { 1686 if(avail[i]) 1687 count++; 1688 } 1689 return count; 1690 } 1691 1692 int cfg_condense_ports(struct config_file* cfg, int** avail) 1693 { 1694 int num = cfg_scan_ports(cfg->outgoing_avail_ports, 65536); 1695 int i, at = 0; 1696 *avail = NULL; 1697 if(num == 0) 1698 return 0; 1699 *avail = (int*)reallocarray(NULL, (size_t)num, sizeof(int)); 1700 if(!*avail) 1701 return 0; 1702 for(i=0; i<65536; i++) { 1703 if(cfg->outgoing_avail_ports[i]) 1704 (*avail)[at++] = cfg->outgoing_avail_ports[i]; 1705 } 1706 log_assert(at == num); 1707 return num; 1708 } 1709 1710 void cfg_apply_local_port_policy(struct config_file* cfg, int num) { 1711 (void)cfg; 1712 (void)num; 1713 #ifdef USE_LINUX_IP_LOCAL_PORT_RANGE 1714 { 1715 int i = 0; 1716 FILE* range_fd; 1717 if ((range_fd = fopen(LINUX_IP_LOCAL_PORT_RANGE_PATH, "r")) != NULL) { 1718 int min_port = 0; 1719 int max_port = num - 1; 1720 if (fscanf(range_fd, "%d %d", &min_port, &max_port) == 2) { 1721 for(i=0; i<min_port; i++) { 1722 cfg->outgoing_avail_ports[i] = 0; 1723 } 1724 for(i=max_port+1; i<num; i++) { 1725 cfg->outgoing_avail_ports[i] = 0; 1726 } 1727 } else { 1728 log_err("unexpected port range in %s", 1729 LINUX_IP_LOCAL_PORT_RANGE_PATH); 1730 } 1731 fclose(range_fd); 1732 } else { 1733 log_err("failed to read from file: %s (%s)", 1734 LINUX_IP_LOCAL_PORT_RANGE_PATH, 1735 strerror(errno)); 1736 } 1737 } 1738 #endif 1739 } 1740 1741 /** print error with file and line number */ 1742 static void ub_c_error_va_list(const char *fmt, va_list args) 1743 { 1744 cfg_parser->errors++; 1745 fprintf(stderr, "%s:%d: error: ", cfg_parser->filename, 1746 cfg_parser->line); 1747 vfprintf(stderr, fmt, args); 1748 fprintf(stderr, "\n"); 1749 } 1750 1751 /** print error with file and line number */ 1752 void ub_c_error_msg(const char* fmt, ...) 1753 { 1754 va_list args; 1755 va_start(args, fmt); 1756 ub_c_error_va_list(fmt, args); 1757 va_end(args); 1758 } 1759 1760 void ub_c_error(const char *str) 1761 { 1762 cfg_parser->errors++; 1763 fprintf(stderr, "%s:%d: error: %s\n", cfg_parser->filename, 1764 cfg_parser->line, str); 1765 } 1766 1767 int ub_c_wrap(void) 1768 { 1769 return 1; 1770 } 1771 1772 int cfg_strlist_append(struct config_strlist_head* list, char* item) 1773 { 1774 struct config_strlist *s; 1775 if(!item || !list) { 1776 free(item); 1777 return 0; 1778 } 1779 s = (struct config_strlist*)calloc(1, sizeof(struct config_strlist)); 1780 if(!s) { 1781 free(item); 1782 return 0; 1783 } 1784 s->str = item; 1785 s->next = NULL; 1786 if(list->last) 1787 list->last->next = s; 1788 else 1789 list->first = s; 1790 list->last = s; 1791 return 1; 1792 } 1793 1794 int 1795 cfg_region_strlist_insert(struct regional* region, 1796 struct config_strlist** head, char* item) 1797 { 1798 struct config_strlist *s; 1799 if(!item || !head) 1800 return 0; 1801 s = (struct config_strlist*)regional_alloc_zero(region, 1802 sizeof(struct config_strlist)); 1803 if(!s) 1804 return 0; 1805 s->str = item; 1806 s->next = *head; 1807 *head = s; 1808 return 1; 1809 } 1810 1811 struct config_strlist* 1812 cfg_strlist_find(struct config_strlist* head, const char *item) 1813 { 1814 struct config_strlist *s = head; 1815 if(!head){ 1816 return NULL; 1817 } 1818 while(s) { 1819 if(strcmp(s->str, item) == 0) { 1820 return s; 1821 } 1822 s = s->next; 1823 } 1824 return NULL; 1825 } 1826 1827 int 1828 cfg_strlist_insert(struct config_strlist** head, char* item) 1829 { 1830 struct config_strlist *s; 1831 if(!item || !head) { 1832 free(item); 1833 return 0; 1834 } 1835 s = (struct config_strlist*)calloc(1, sizeof(struct config_strlist)); 1836 if(!s) { 1837 free(item); 1838 return 0; 1839 } 1840 s->str = item; 1841 s->next = *head; 1842 *head = s; 1843 return 1; 1844 } 1845 1846 int 1847 cfg_strlist_append_ex(struct config_strlist** head, char* item) 1848 { 1849 struct config_strlist *s; 1850 if(!item || !head) 1851 return 0; 1852 s = (struct config_strlist*)calloc(1, sizeof(struct config_strlist)); 1853 if(!s) 1854 return 0; 1855 s->str = item; 1856 s->next = NULL; 1857 1858 if (*head==NULL) { 1859 *head = s; 1860 } else { 1861 struct config_strlist *last = *head; 1862 while (last->next!=NULL) { 1863 last = last->next; 1864 } 1865 last->next = s; 1866 } 1867 1868 return 1; 1869 } 1870 1871 int 1872 cfg_str2list_insert(struct config_str2list** head, char* item, char* i2) 1873 { 1874 struct config_str2list *s; 1875 if(!item || !i2 || !head) { 1876 free(item); 1877 free(i2); 1878 return 0; 1879 } 1880 s = (struct config_str2list*)calloc(1, sizeof(struct config_str2list)); 1881 if(!s) { 1882 free(item); 1883 free(i2); 1884 return 0; 1885 } 1886 s->str = item; 1887 s->str2 = i2; 1888 s->next = *head; 1889 *head = s; 1890 return 1; 1891 } 1892 1893 int 1894 cfg_str3list_insert(struct config_str3list** head, char* item, char* i2, 1895 char* i3) 1896 { 1897 struct config_str3list *s; 1898 if(!item || !i2 || !i3 || !head) 1899 return 0; 1900 s = (struct config_str3list*)calloc(1, sizeof(struct config_str3list)); 1901 if(!s) 1902 return 0; 1903 s->str = item; 1904 s->str2 = i2; 1905 s->str3 = i3; 1906 s->next = *head; 1907 *head = s; 1908 return 1; 1909 } 1910 1911 int 1912 cfg_strbytelist_insert(struct config_strbytelist** head, char* item, 1913 uint8_t* i2, size_t i2len) 1914 { 1915 struct config_strbytelist* s; 1916 if(!item || !i2 || !head) 1917 return 0; 1918 s = (struct config_strbytelist*)calloc(1, sizeof(*s)); 1919 if(!s) 1920 return 0; 1921 s->str = item; 1922 s->str2 = i2; 1923 s->str2len = i2len; 1924 s->next = *head; 1925 *head = s; 1926 return 1; 1927 } 1928 1929 time_t 1930 cfg_convert_timeval(const char* str) 1931 { 1932 time_t t; 1933 struct tm tm; 1934 memset(&tm, 0, sizeof(tm)); 1935 if(strlen(str) < 14) 1936 return 0; 1937 if(sscanf(str, "%4d%2d%2d%2d%2d%2d", &tm.tm_year, &tm.tm_mon, 1938 &tm.tm_mday, &tm.tm_hour, &tm.tm_min, &tm.tm_sec) != 6) 1939 return 0; 1940 tm.tm_year -= 1900; 1941 tm.tm_mon--; 1942 /* Check values */ 1943 if (tm.tm_year < 70) return 0; 1944 if (tm.tm_mon < 0 || tm.tm_mon > 11) return 0; 1945 if (tm.tm_mday < 1 || tm.tm_mday > 31) return 0; 1946 if (tm.tm_hour < 0 || tm.tm_hour > 23) return 0; 1947 if (tm.tm_min < 0 || tm.tm_min > 59) return 0; 1948 if (tm.tm_sec < 0 || tm.tm_sec > 59) return 0; 1949 /* call ldns conversion function */ 1950 t = sldns_mktime_from_utc(&tm); 1951 return t; 1952 } 1953 1954 int 1955 cfg_count_numbers(const char* s) 1956 { 1957 /* format ::= (sp num)+ sp */ 1958 /* num ::= [-](0-9)+ */ 1959 /* sp ::= (space|tab)* */ 1960 int num = 0; 1961 while(*s) { 1962 while(*s && isspace((unsigned char)*s)) 1963 s++; 1964 if(!*s) /* end of string */ 1965 break; 1966 if(*s == '-') 1967 s++; 1968 if(!*s) /* only - not allowed */ 1969 return 0; 1970 if(!isdigit((unsigned char)*s)) /* bad character */ 1971 return 0; 1972 while(*s && isdigit((unsigned char)*s)) 1973 s++; 1974 num++; 1975 } 1976 return num; 1977 } 1978 1979 /** all digit number */ 1980 static int isalldigit(const char* str, size_t l) 1981 { 1982 size_t i; 1983 for(i=0; i<l; i++) 1984 if(!isdigit((unsigned char)str[i])) 1985 return 0; 1986 return 1; 1987 } 1988 1989 int 1990 cfg_parse_memsize(const char* str, size_t* res) 1991 { 1992 size_t len; 1993 size_t mult = 1; 1994 if(!str || (len=(size_t)strlen(str)) == 0) { 1995 log_err("not a size: '%s'", str); 1996 return 0; 1997 } 1998 if(isalldigit(str, len)) { 1999 *res = (size_t)atol(str); 2000 return 1; 2001 } 2002 /* check appended num */ 2003 while(len>0 && str[len-1]==' ') 2004 len--; 2005 if(len > 1 && str[len-1] == 'b') 2006 len--; 2007 else if(len > 1 && str[len-1] == 'B') 2008 len--; 2009 2010 if(len > 1 && tolower((unsigned char)str[len-1]) == 'g') 2011 mult = 1024*1024*1024; 2012 else if(len > 1 && tolower((unsigned char)str[len-1]) == 'm') 2013 mult = 1024*1024; 2014 else if(len > 1 && tolower((unsigned char)str[len-1]) == 'k') 2015 mult = 1024; 2016 else if(len > 0 && isdigit((unsigned char)str[len-1])) 2017 mult = 1; 2018 else { 2019 log_err("unknown size specifier: '%s'", str); 2020 return 0; 2021 } 2022 while(len>1 && str[len-2]==' ') 2023 len--; 2024 2025 if(!isalldigit(str, len-1)) { 2026 log_err("unknown size specifier: '%s'", str); 2027 return 0; 2028 } 2029 *res = ((size_t)atol(str)) * mult; 2030 return 1; 2031 } 2032 2033 int 2034 find_tag_id(struct config_file* cfg, const char* tag) 2035 { 2036 int i; 2037 for(i=0; i<cfg->num_tags; i++) { 2038 if(strcmp(cfg->tagname[i], tag) == 0) 2039 return i; 2040 } 2041 return -1; 2042 } 2043 2044 int 2045 config_add_tag(struct config_file* cfg, const char* tag) 2046 { 2047 char** newarray; 2048 char* newtag; 2049 if(find_tag_id(cfg, tag) != -1) 2050 return 1; /* nothing to do */ 2051 newarray = (char**)malloc(sizeof(char*)*(cfg->num_tags+1)); 2052 if(!newarray) 2053 return 0; 2054 newtag = strdup(tag); 2055 if(!newtag) { 2056 free(newarray); 2057 return 0; 2058 } 2059 if(cfg->tagname) { 2060 memcpy(newarray, cfg->tagname, sizeof(char*)*cfg->num_tags); 2061 free(cfg->tagname); 2062 } 2063 newarray[cfg->num_tags++] = newtag; 2064 cfg->tagname = newarray; 2065 return 1; 2066 } 2067 2068 /** set a bit in a bit array */ 2069 static void 2070 cfg_set_bit(uint8_t* bitlist, size_t len, int id) 2071 { 2072 int pos = id/8; 2073 log_assert((size_t)pos < len); 2074 (void)len; 2075 bitlist[pos] |= 1<<(id%8); 2076 } 2077 2078 uint8_t* config_parse_taglist(struct config_file* cfg, char* str, 2079 size_t* listlen) 2080 { 2081 uint8_t* taglist = NULL; 2082 size_t len = 0; 2083 char* p, *s; 2084 2085 /* allocate */ 2086 if(cfg->num_tags == 0) { 2087 log_err("parse taglist, but no tags defined"); 2088 return 0; 2089 } 2090 len = (size_t)(cfg->num_tags+7)/8; 2091 taglist = calloc(1, len); 2092 if(!taglist) { 2093 log_err("out of memory"); 2094 return 0; 2095 } 2096 2097 /* parse */ 2098 s = str; 2099 while((p=strsep(&s, " \t\n")) != NULL) { 2100 if(*p) { 2101 int id = find_tag_id(cfg, p); 2102 /* set this bit in the bitlist */ 2103 if(id == -1) { 2104 log_err("unknown tag: %s", p); 2105 free(taglist); 2106 return 0; 2107 } 2108 cfg_set_bit(taglist, len, id); 2109 } 2110 } 2111 2112 *listlen = len; 2113 return taglist; 2114 } 2115 2116 uint8_t* cfg_parse_nsid(const char* str, uint16_t* nsid_len) 2117 { 2118 uint8_t* nsid = NULL; 2119 2120 if (strncasecmp(str, "ascii_", 6) == 0) { 2121 if ((nsid = (uint8_t *)strdup(str + 6))) 2122 *nsid_len = strlen(str + 6); 2123 2124 } else if (strlen(str) % 2) { 2125 ; /* hex string has even number of characters */ 2126 } 2127 2128 else if (*str && (nsid = calloc(1, strlen(str) / 2))) { 2129 const char *ch; 2130 uint8_t *dp; 2131 2132 for ( ch = str, dp = nsid 2133 ; isxdigit(ch[0]) && isxdigit(ch[1]) 2134 ; ch += 2, dp++) { 2135 *dp = (uint8_t)sldns_hexdigit_to_int(ch[0]) * 16; 2136 *dp += (uint8_t)sldns_hexdigit_to_int(ch[1]); 2137 } 2138 if (*ch) { 2139 free(nsid); 2140 nsid = NULL; 2141 } else 2142 *nsid_len = strlen(str) / 2; 2143 } 2144 return nsid; 2145 } 2146 2147 2148 char* config_taglist2str(struct config_file* cfg, uint8_t* taglist, 2149 size_t taglen) 2150 { 2151 char buf[10240]; 2152 size_t i, j, len = 0; 2153 buf[0] = 0; 2154 for(i=0; i<taglen; i++) { 2155 if(taglist[i] == 0) 2156 continue; 2157 for(j=0; j<8; j++) { 2158 if((taglist[i] & (1<<j)) != 0) { 2159 size_t id = i*8 + j; 2160 snprintf(buf+len, sizeof(buf)-len, "%s%s", 2161 (len==0?"":" "), cfg->tagname[id]); 2162 len += strlen(buf+len); 2163 } 2164 } 2165 } 2166 return strdup(buf); 2167 } 2168 2169 int taglist_intersect(uint8_t* list1, size_t list1len, const uint8_t* list2, 2170 size_t list2len) 2171 { 2172 size_t i; 2173 if(!list1 || !list2) 2174 return 0; 2175 for(i=0; i<list1len && i<list2len; i++) { 2176 if((list1[i] & list2[i]) != 0) 2177 return 1; 2178 } 2179 return 0; 2180 } 2181 2182 void 2183 config_apply(struct config_file* config) 2184 { 2185 MAX_TTL = (time_t)config->max_ttl; 2186 MIN_TTL = (time_t)config->min_ttl; 2187 SERVE_EXPIRED = config->serve_expired; 2188 SERVE_EXPIRED_TTL = (time_t)config->serve_expired_ttl; 2189 SERVE_EXPIRED_REPLY_TTL = (time_t)config->serve_expired_reply_ttl; 2190 SERVE_ORIGINAL_TTL = config->serve_original_ttl; 2191 MAX_NEG_TTL = (time_t)config->max_negative_ttl; 2192 RTT_MIN_TIMEOUT = config->infra_cache_min_rtt; 2193 EDNS_ADVERTISED_SIZE = (uint16_t)config->edns_buffer_size; 2194 MINIMAL_RESPONSES = config->minimal_responses; 2195 RRSET_ROUNDROBIN = config->rrset_roundrobin; 2196 LOG_TAG_QUERYREPLY = config->log_tag_queryreply; 2197 UNKNOWN_SERVER_NICENESS = config->unknown_server_time_limit; 2198 log_set_time_asc(config->log_time_ascii); 2199 autr_permit_small_holddown = config->permit_small_holddown; 2200 stream_wait_max = config->stream_wait_size; 2201 http2_query_buffer_max = config->http_query_buffer_size; 2202 http2_response_buffer_max = config->http_response_buffer_size; 2203 } 2204 2205 void config_lookup_uid(struct config_file* cfg) 2206 { 2207 #ifdef HAVE_GETPWNAM 2208 /* translate username into uid and gid */ 2209 if(cfg->username && cfg->username[0]) { 2210 struct passwd *pwd; 2211 if((pwd = getpwnam(cfg->username)) != NULL) { 2212 cfg_uid = pwd->pw_uid; 2213 cfg_gid = pwd->pw_gid; 2214 } 2215 } 2216 #else 2217 (void)cfg; 2218 #endif 2219 } 2220 2221 /** 2222 * Calculate string length of full pathname in original filesys 2223 * @param fname: the path name to convert. 2224 * Must not be null or empty. 2225 * @param cfg: config struct for chroot and chdir (if set). 2226 * @param use_chdir: if false, only chroot is applied. 2227 * @return length of string. 2228 * remember to allocate one more for 0 at end in mallocs. 2229 */ 2230 static size_t 2231 strlen_after_chroot(const char* fname, struct config_file* cfg, int use_chdir) 2232 { 2233 size_t len = 0; 2234 int slashit = 0; 2235 if(cfg->chrootdir && cfg->chrootdir[0] && 2236 strncmp(cfg->chrootdir, fname, strlen(cfg->chrootdir)) == 0) { 2237 /* already full pathname, return it */ 2238 return strlen(fname); 2239 } 2240 /* chroot */ 2241 if(cfg->chrootdir && cfg->chrootdir[0]) { 2242 /* start with chrootdir */ 2243 len += strlen(cfg->chrootdir); 2244 slashit = 1; 2245 } 2246 /* chdir */ 2247 #ifdef UB_ON_WINDOWS 2248 if(fname[0] != 0 && fname[1] == ':') { 2249 /* full path, no chdir */ 2250 } else 2251 #endif 2252 if(fname[0] == '/' || !use_chdir) { 2253 /* full path, no chdir */ 2254 } else if(cfg->directory && cfg->directory[0]) { 2255 /* prepend chdir */ 2256 if(slashit && cfg->directory[0] != '/') 2257 len++; 2258 if(cfg->chrootdir && cfg->chrootdir[0] && 2259 strncmp(cfg->chrootdir, cfg->directory, 2260 strlen(cfg->chrootdir)) == 0) 2261 len += strlen(cfg->directory)-strlen(cfg->chrootdir); 2262 else len += strlen(cfg->directory); 2263 slashit = 1; 2264 } 2265 /* fname */ 2266 if(slashit && fname[0] != '/') 2267 len++; 2268 len += strlen(fname); 2269 return len; 2270 } 2271 2272 char* 2273 fname_after_chroot(const char* fname, struct config_file* cfg, int use_chdir) 2274 { 2275 size_t len = strlen_after_chroot(fname, cfg, use_chdir)+1; 2276 int slashit = 0; 2277 char* buf = (char*)malloc(len); 2278 if(!buf) 2279 return NULL; 2280 buf[0] = 0; 2281 /* is fname already in chroot ? */ 2282 if(cfg->chrootdir && cfg->chrootdir[0] && 2283 strncmp(cfg->chrootdir, fname, strlen(cfg->chrootdir)) == 0) { 2284 /* already full pathname, return it */ 2285 (void)strlcpy(buf, fname, len); 2286 buf[len-1] = 0; 2287 return buf; 2288 } 2289 /* chroot */ 2290 if(cfg->chrootdir && cfg->chrootdir[0]) { 2291 /* start with chrootdir */ 2292 (void)strlcpy(buf, cfg->chrootdir, len); 2293 slashit = 1; 2294 } 2295 #ifdef UB_ON_WINDOWS 2296 if(fname[0] != 0 && fname[1] == ':') { 2297 /* full path, no chdir */ 2298 } else 2299 #endif 2300 /* chdir */ 2301 if(fname[0] == '/' || !use_chdir) { 2302 /* full path, no chdir */ 2303 } else if(cfg->directory && cfg->directory[0]) { 2304 /* prepend chdir */ 2305 if(slashit && cfg->directory[0] != '/') 2306 (void)strlcat(buf, "/", len); 2307 /* is the directory already in the chroot? */ 2308 if(cfg->chrootdir && cfg->chrootdir[0] && 2309 strncmp(cfg->chrootdir, cfg->directory, 2310 strlen(cfg->chrootdir)) == 0) 2311 (void)strlcat(buf, cfg->directory+strlen(cfg->chrootdir), 2312 len); 2313 else (void)strlcat(buf, cfg->directory, len); 2314 slashit = 1; 2315 } 2316 /* fname */ 2317 if(slashit && fname[0] != '/') 2318 (void)strlcat(buf, "/", len); 2319 (void)strlcat(buf, fname, len); 2320 buf[len-1] = 0; 2321 return buf; 2322 } 2323 2324 /** return next space character in string */ 2325 static char* next_space_pos(const char* str) 2326 { 2327 char* sp = strchr(str, ' '); 2328 char* tab = strchr(str, '\t'); 2329 if(!tab && !sp) 2330 return NULL; 2331 if(!sp) return tab; 2332 if(!tab) return sp; 2333 return (sp<tab)?sp:tab; 2334 } 2335 2336 /** return last space character in string */ 2337 static char* last_space_pos(const char* str) 2338 { 2339 char* sp = strrchr(str, ' '); 2340 char* tab = strrchr(str, '\t'); 2341 if(!tab && !sp) 2342 return NULL; 2343 if(!sp) return tab; 2344 if(!tab) return sp; 2345 return (sp>tab)?sp:tab; 2346 } 2347 2348 int 2349 cfg_parse_local_zone(struct config_file* cfg, const char* val) 2350 { 2351 const char *type, *name_end, *name; 2352 char buf[256]; 2353 2354 /* parse it as: [zone_name] [between stuff] [zone_type] */ 2355 name = val; 2356 while(*name && isspace((unsigned char)*name)) 2357 name++; 2358 if(!*name) { 2359 log_err("syntax error: too short: %s", val); 2360 return 0; 2361 } 2362 name_end = next_space_pos(name); 2363 if(!name_end || !*name_end) { 2364 log_err("syntax error: expected zone type: %s", val); 2365 return 0; 2366 } 2367 if (name_end - name > 255) { 2368 log_err("syntax error: bad zone name: %s", val); 2369 return 0; 2370 } 2371 (void)strlcpy(buf, name, sizeof(buf)); 2372 buf[name_end-name] = '\0'; 2373 2374 type = last_space_pos(name_end); 2375 while(type && *type && isspace((unsigned char)*type)) 2376 type++; 2377 if(!type || !*type) { 2378 log_err("syntax error: expected zone type: %s", val); 2379 return 0; 2380 } 2381 2382 if(strcmp(type, "nodefault")==0) { 2383 return cfg_strlist_insert(&cfg->local_zones_nodefault, 2384 strdup(name)); 2385 #ifdef USE_IPSET 2386 } else if(strcmp(type, "ipset")==0) { 2387 return cfg_strlist_insert(&cfg->local_zones_ipset, 2388 strdup(name)); 2389 #endif 2390 } else { 2391 return cfg_str2list_insert(&cfg->local_zones, strdup(buf), 2392 strdup(type)); 2393 } 2394 } 2395 2396 char* cfg_ptr_reverse(char* str) 2397 { 2398 char* ip, *ip_end; 2399 char* name; 2400 char* result; 2401 char buf[1024]; 2402 struct sockaddr_storage addr; 2403 socklen_t addrlen; 2404 2405 /* parse it as: [IP] [between stuff] [name] */ 2406 ip = str; 2407 while(*ip && isspace((unsigned char)*ip)) 2408 ip++; 2409 if(!*ip) { 2410 log_err("syntax error: too short: %s", str); 2411 return NULL; 2412 } 2413 ip_end = next_space_pos(ip); 2414 if(!ip_end || !*ip_end) { 2415 log_err("syntax error: expected name: %s", str); 2416 return NULL; 2417 } 2418 2419 name = last_space_pos(ip_end); 2420 if(!name || !*name) { 2421 log_err("syntax error: expected name: %s", str); 2422 return NULL; 2423 } 2424 2425 sscanf(ip, "%100s", buf); 2426 buf[sizeof(buf)-1]=0; 2427 2428 if(!ipstrtoaddr(buf, UNBOUND_DNS_PORT, &addr, &addrlen)) { 2429 log_err("syntax error: cannot parse address: %s", str); 2430 return NULL; 2431 } 2432 2433 /* reverse IPv4: 2434 * ddd.ddd.ddd.ddd.in-addr-arpa. 2435 * IPv6: (h.){32}.ip6.arpa. */ 2436 2437 if(addr_is_ip6(&addr, addrlen)) { 2438 uint8_t ad[16]; 2439 const char* hex = "0123456789abcdef"; 2440 char *p = buf; 2441 int i; 2442 memmove(ad, &((struct sockaddr_in6*)&addr)->sin6_addr, 2443 sizeof(ad)); 2444 for(i=15; i>=0; i--) { 2445 uint8_t b = ad[i]; 2446 *p++ = hex[ (b&0x0f) ]; 2447 *p++ = '.'; 2448 *p++ = hex[ (b&0xf0) >> 4 ]; 2449 *p++ = '.'; 2450 } 2451 snprintf(buf+16*4, sizeof(buf)-16*4, "ip6.arpa. "); 2452 } else { 2453 uint8_t ad[4]; 2454 memmove(ad, &((struct sockaddr_in*)&addr)->sin_addr, 2455 sizeof(ad)); 2456 snprintf(buf, sizeof(buf), "%u.%u.%u.%u.in-addr.arpa. ", 2457 (unsigned)ad[3], (unsigned)ad[2], 2458 (unsigned)ad[1], (unsigned)ad[0]); 2459 } 2460 2461 /* printed the reverse address, now the between goop and name on end */ 2462 while(*ip_end && isspace((unsigned char)*ip_end)) 2463 ip_end++; 2464 if(name>ip_end) { 2465 snprintf(buf+strlen(buf), sizeof(buf)-strlen(buf), "%.*s", 2466 (int)(name-ip_end), ip_end); 2467 } 2468 snprintf(buf+strlen(buf), sizeof(buf)-strlen(buf), " PTR %s", name); 2469 2470 result = strdup(buf); 2471 if(!result) { 2472 log_err("out of memory parsing %s", str); 2473 return NULL; 2474 } 2475 return result; 2476 } 2477 2478 #ifdef UB_ON_WINDOWS 2479 char* 2480 w_lookup_reg_str(const char* key, const char* name) 2481 { 2482 HKEY hk = NULL; 2483 DWORD type = 0; 2484 BYTE buf[1024]; 2485 DWORD len = (DWORD)sizeof(buf); 2486 LONG ret; 2487 char* result = NULL; 2488 ret = RegOpenKeyEx(HKEY_LOCAL_MACHINE, key, 0, KEY_READ, &hk); 2489 if(ret == ERROR_FILE_NOT_FOUND) 2490 return NULL; /* key does not exist */ 2491 else if(ret != ERROR_SUCCESS) { 2492 log_err("RegOpenKeyEx failed"); 2493 return NULL; 2494 } 2495 ret = RegQueryValueEx(hk, (LPCTSTR)name, 0, &type, buf, &len); 2496 if(RegCloseKey(hk)) 2497 log_err("RegCloseKey"); 2498 if(ret == ERROR_FILE_NOT_FOUND) 2499 return NULL; /* name does not exist */ 2500 else if(ret != ERROR_SUCCESS) { 2501 log_err("RegQueryValueEx failed"); 2502 return NULL; 2503 } 2504 if(type == REG_SZ || type == REG_MULTI_SZ || type == REG_EXPAND_SZ) { 2505 buf[sizeof(buf)-1] = 0; 2506 buf[sizeof(buf)-2] = 0; /* for multi_sz */ 2507 result = strdup((char*)buf); 2508 if(!result) log_err("out of memory"); 2509 } 2510 return result; 2511 } 2512 2513 void w_config_adjust_directory(struct config_file* cfg) 2514 { 2515 if(cfg->directory && cfg->directory[0]) { 2516 TCHAR dirbuf[2*MAX_PATH+4]; 2517 if(strcmp(cfg->directory, "%EXECUTABLE%") == 0) { 2518 /* get executable path, and if that contains 2519 * directories, snip off the filename part */ 2520 dirbuf[0] = 0; 2521 if(!GetModuleFileName(NULL, dirbuf, MAX_PATH)) 2522 log_err("could not GetModuleFileName"); 2523 if(strrchr(dirbuf, '\\')) { 2524 (strrchr(dirbuf, '\\'))[0] = 0; 2525 } else log_err("GetModuleFileName had no path"); 2526 if(dirbuf[0]) { 2527 /* adjust directory for later lookups to work*/ 2528 free(cfg->directory); 2529 cfg->directory = memdup(dirbuf, strlen(dirbuf)+1); 2530 } 2531 } 2532 } 2533 } 2534 #endif /* UB_ON_WINDOWS */ 2535 2536 void errinf(struct module_qstate* qstate, const char* str) 2537 { 2538 struct config_strlist* p; 2539 if((qstate->env->cfg->val_log_level < 2 && !qstate->env->cfg->log_servfail) || !str) 2540 return; 2541 p = (struct config_strlist*)regional_alloc(qstate->region, sizeof(*p)); 2542 if(!p) { 2543 log_err("malloc failure in validator-error-info string"); 2544 return; 2545 } 2546 p->next = NULL; 2547 p->str = regional_strdup(qstate->region, str); 2548 if(!p->str) { 2549 log_err("malloc failure in validator-error-info string"); 2550 return; 2551 } 2552 /* add at end */ 2553 if(qstate->errinf) { 2554 struct config_strlist* q = qstate->errinf; 2555 while(q->next) 2556 q = q->next; 2557 q->next = p; 2558 } else qstate->errinf = p; 2559 } 2560 2561 void errinf_origin(struct module_qstate* qstate, struct sock_list *origin) 2562 { 2563 struct sock_list* p; 2564 if(qstate->env->cfg->val_log_level < 2 && !qstate->env->cfg->log_servfail) 2565 return; 2566 for(p=origin; p; p=p->next) { 2567 char buf[256]; 2568 if(p == origin) 2569 snprintf(buf, sizeof(buf), "from "); 2570 else snprintf(buf, sizeof(buf), "and "); 2571 if(p->len == 0) 2572 snprintf(buf+strlen(buf), sizeof(buf)-strlen(buf), 2573 "cache"); 2574 else 2575 addr_to_str(&p->addr, p->len, buf+strlen(buf), 2576 sizeof(buf)-strlen(buf)); 2577 errinf(qstate, buf); 2578 } 2579 } 2580 2581 char* errinf_to_str_bogus(struct module_qstate* qstate) 2582 { 2583 char buf[20480]; 2584 char* p = buf; 2585 size_t left = sizeof(buf); 2586 struct config_strlist* s; 2587 char dname[LDNS_MAX_DOMAINLEN+1]; 2588 char t[16], c[16]; 2589 sldns_wire2str_type_buf(qstate->qinfo.qtype, t, sizeof(t)); 2590 sldns_wire2str_class_buf(qstate->qinfo.qclass, c, sizeof(c)); 2591 dname_str(qstate->qinfo.qname, dname); 2592 snprintf(p, left, "validation failure <%s %s %s>:", dname, t, c); 2593 left -= strlen(p); p += strlen(p); 2594 if(!qstate->errinf) 2595 snprintf(p, left, " misc failure"); 2596 else for(s=qstate->errinf; s; s=s->next) { 2597 snprintf(p, left, " %s", s->str); 2598 left -= strlen(p); p += strlen(p); 2599 } 2600 p = strdup(buf); 2601 if(!p) 2602 log_err("malloc failure in errinf_to_str"); 2603 return p; 2604 } 2605 2606 char* errinf_to_str_servfail(struct module_qstate* qstate) 2607 { 2608 char buf[20480]; 2609 char* p = buf; 2610 size_t left = sizeof(buf); 2611 struct config_strlist* s; 2612 char dname[LDNS_MAX_DOMAINLEN+1]; 2613 char t[16], c[16]; 2614 sldns_wire2str_type_buf(qstate->qinfo.qtype, t, sizeof(t)); 2615 sldns_wire2str_class_buf(qstate->qinfo.qclass, c, sizeof(c)); 2616 dname_str(qstate->qinfo.qname, dname); 2617 snprintf(p, left, "SERVFAIL <%s %s %s>:", dname, t, c); 2618 left -= strlen(p); p += strlen(p); 2619 if(!qstate->errinf) 2620 snprintf(p, left, " misc failure"); 2621 else for(s=qstate->errinf; s; s=s->next) { 2622 snprintf(p, left, " %s", s->str); 2623 left -= strlen(p); p += strlen(p); 2624 } 2625 p = strdup(buf); 2626 if(!p) 2627 log_err("malloc failure in errinf_to_str"); 2628 return p; 2629 } 2630 2631 void errinf_rrset(struct module_qstate* qstate, struct ub_packed_rrset_key *rr) 2632 { 2633 char buf[1024]; 2634 char dname[LDNS_MAX_DOMAINLEN+1]; 2635 char t[16], c[16]; 2636 if((qstate->env->cfg->val_log_level < 2 && !qstate->env->cfg->log_servfail) || !rr) 2637 return; 2638 sldns_wire2str_type_buf(ntohs(rr->rk.type), t, sizeof(t)); 2639 sldns_wire2str_class_buf(ntohs(rr->rk.rrset_class), c, sizeof(c)); 2640 dname_str(rr->rk.dname, dname); 2641 snprintf(buf, sizeof(buf), "for <%s %s %s>", dname, t, c); 2642 errinf(qstate, buf); 2643 } 2644 2645 void errinf_dname(struct module_qstate* qstate, const char* str, uint8_t* dname) 2646 { 2647 char b[1024]; 2648 char buf[LDNS_MAX_DOMAINLEN+1]; 2649 if((qstate->env->cfg->val_log_level < 2 && !qstate->env->cfg->log_servfail) || !str || !dname) 2650 return; 2651 dname_str(dname, buf); 2652 snprintf(b, sizeof(b), "%s %s", str, buf); 2653 errinf(qstate, b); 2654 } 2655 2656 int options_remote_is_address(struct config_file* cfg) 2657 { 2658 if(!cfg->remote_control_enable) return 0; 2659 if(!cfg->control_ifs.first) return 1; 2660 if(!cfg->control_ifs.first->str) return 1; 2661 if(cfg->control_ifs.first->str[0] == 0) return 1; 2662 return (cfg->control_ifs.first->str[0] != '/'); 2663 } 2664 2665 /** see if interface is https, its port number == the https port number */ 2666 int 2667 if_is_https(const char* ifname, const char* port, int https_port) 2668 { 2669 char* p = strchr(ifname, '@'); 2670 if(!p && atoi(port) == https_port) 2671 return 1; 2672 if(p && atoi(p+1) == https_port) 2673 return 1; 2674 return 0; 2675 } 2676 2677 /** see if config contains https turned on */ 2678 int cfg_has_https(struct config_file* cfg) 2679 { 2680 int i; 2681 char portbuf[32]; 2682 snprintf(portbuf, sizeof(portbuf), "%d", cfg->port); 2683 for(i = 0; i<cfg->num_ifs; i++) { 2684 if(if_is_https(cfg->ifs[i], portbuf, cfg->https_port)) 2685 return 1; 2686 } 2687 return 0; 2688 } 2689