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->stat_inhibit_zero = 1; 103 cfg->num_threads = 1; 104 cfg->port = UNBOUND_DNS_PORT; 105 cfg->do_ip4 = 1; 106 cfg->do_ip6 = 1; 107 cfg->do_udp = 1; 108 cfg->do_tcp = 1; 109 cfg->tcp_reuse_timeout = 60 * 1000; /* 60s in milisecs */ 110 cfg->max_reuse_tcp_queries = 200; 111 cfg->tcp_upstream = 0; 112 cfg->udp_upstream_without_downstream = 0; 113 cfg->tcp_mss = 0; 114 cfg->outgoing_tcp_mss = 0; 115 cfg->tcp_idle_timeout = 30 * 1000; /* 30s in millisecs */ 116 cfg->tcp_auth_query_timeout = 3 * 1000; /* 3s in millisecs */ 117 cfg->do_tcp_keepalive = 0; 118 cfg->tcp_keepalive_timeout = 120 * 1000; /* 120s in millisecs */ 119 cfg->ssl_service_key = NULL; 120 cfg->ssl_service_pem = NULL; 121 cfg->ssl_port = UNBOUND_DNS_OVER_TLS_PORT; 122 cfg->ssl_upstream = 0; 123 cfg->tls_cert_bundle = NULL; 124 cfg->tls_win_cert = 0; 125 cfg->tls_use_sni = 1; 126 cfg->https_port = UNBOUND_DNS_OVER_HTTPS_PORT; 127 if(!(cfg->http_endpoint = strdup("/dns-query"))) goto error_exit; 128 cfg->http_max_streams = 100; 129 cfg->http_query_buffer_size = 4*1024*1024; 130 cfg->http_response_buffer_size = 4*1024*1024; 131 cfg->http_nodelay = 1; 132 cfg->use_syslog = 1; 133 cfg->log_identity = NULL; /* changed later with argv[0] */ 134 cfg->log_time_ascii = 0; 135 cfg->log_queries = 0; 136 cfg->log_replies = 0; 137 cfg->log_tag_queryreply = 0; 138 cfg->log_local_actions = 0; 139 cfg->log_servfail = 0; 140 #ifndef USE_WINSOCK 141 # ifdef USE_MINI_EVENT 142 /* select max 1024 sockets */ 143 cfg->outgoing_num_ports = 960; 144 cfg->num_queries_per_thread = 512; 145 # else 146 /* libevent can use many sockets */ 147 cfg->outgoing_num_ports = 4096; 148 cfg->num_queries_per_thread = 1024; 149 # endif 150 cfg->outgoing_num_tcp = 10; 151 cfg->incoming_num_tcp = 10; 152 #else 153 cfg->outgoing_num_ports = 48; /* windows is limited in num fds */ 154 cfg->num_queries_per_thread = 24; 155 cfg->outgoing_num_tcp = 2; /* leaves 64-52=12 for: 4if,1stop,thread4 */ 156 cfg->incoming_num_tcp = 2; 157 #endif 158 cfg->stream_wait_size = 4 * 1024 * 1024; 159 cfg->edns_buffer_size = 1232; /* from DNS flagday recommendation */ 160 cfg->msg_buffer_size = 65552; /* 64 k + a small margin */ 161 cfg->msg_cache_size = 4 * 1024 * 1024; 162 cfg->msg_cache_slabs = 4; 163 cfg->jostle_time = 200; 164 cfg->rrset_cache_size = 4 * 1024 * 1024; 165 cfg->rrset_cache_slabs = 4; 166 cfg->host_ttl = 900; 167 cfg->bogus_ttl = 60; 168 cfg->min_ttl = 0; 169 cfg->max_ttl = 3600 * 24; 170 cfg->max_negative_ttl = 3600; 171 cfg->prefetch = 0; 172 cfg->prefetch_key = 0; 173 cfg->deny_any = 0; 174 cfg->infra_cache_slabs = 4; 175 cfg->infra_cache_numhosts = 10000; 176 cfg->infra_cache_min_rtt = 50; 177 cfg->infra_cache_max_rtt = 120000; 178 cfg->infra_keep_probing = 0; 179 cfg->delay_close = 0; 180 cfg->udp_connect = 1; 181 if(!(cfg->outgoing_avail_ports = (int*)calloc(65536, sizeof(int)))) 182 goto error_exit; 183 init_outgoing_availports(cfg->outgoing_avail_ports, 65536); 184 if(!(cfg->username = strdup(UB_USERNAME))) goto error_exit; 185 #ifdef HAVE_CHROOT 186 if(!(cfg->chrootdir = strdup(CHROOT_DIR))) goto error_exit; 187 #endif 188 if(!(cfg->directory = strdup(RUN_DIR))) goto error_exit; 189 if(!(cfg->logfile = strdup(""))) goto error_exit; 190 if(!(cfg->pidfile = strdup(PIDFILE))) goto error_exit; 191 if(!(cfg->target_fetch_policy = strdup("3 2 1 0 0"))) goto error_exit; 192 cfg->fast_server_permil = 0; 193 cfg->fast_server_num = 3; 194 cfg->donotqueryaddrs = NULL; 195 cfg->donotquery_localhost = 1; 196 cfg->root_hints = NULL; 197 cfg->use_systemd = 0; 198 cfg->do_daemonize = 1; 199 cfg->if_automatic = 0; 200 cfg->if_automatic_ports = NULL; 201 cfg->so_rcvbuf = 0; 202 cfg->so_sndbuf = 0; 203 cfg->so_reuseport = REUSEPORT_DEFAULT; 204 cfg->ip_transparent = 0; 205 cfg->ip_freebind = 0; 206 cfg->ip_dscp = 0; 207 cfg->num_ifs = 0; 208 cfg->ifs = NULL; 209 cfg->num_out_ifs = 0; 210 cfg->out_ifs = NULL; 211 cfg->stubs = NULL; 212 cfg->forwards = NULL; 213 cfg->auths = NULL; 214 #ifdef CLIENT_SUBNET 215 cfg->client_subnet = NULL; 216 cfg->client_subnet_zone = NULL; 217 cfg->client_subnet_opcode = LDNS_EDNS_CLIENT_SUBNET; 218 cfg->client_subnet_always_forward = 0; 219 cfg->max_client_subnet_ipv4 = 24; 220 cfg->max_client_subnet_ipv6 = 56; 221 cfg->min_client_subnet_ipv4 = 0; 222 cfg->min_client_subnet_ipv6 = 0; 223 cfg->max_ecs_tree_size_ipv4 = 100; 224 cfg->max_ecs_tree_size_ipv6 = 100; 225 #endif 226 cfg->views = NULL; 227 cfg->acls = NULL; 228 cfg->tcp_connection_limits = NULL; 229 cfg->harden_short_bufsize = 1; 230 cfg->harden_large_queries = 0; 231 cfg->harden_glue = 1; 232 cfg->harden_dnssec_stripped = 1; 233 cfg->harden_below_nxdomain = 1; 234 cfg->harden_referral_path = 0; 235 cfg->harden_algo_downgrade = 0; 236 cfg->use_caps_bits_for_id = 0; 237 cfg->caps_whitelist = NULL; 238 cfg->private_address = NULL; 239 cfg->private_domain = NULL; 240 cfg->unwanted_threshold = 0; 241 cfg->hide_identity = 0; 242 cfg->hide_version = 0; 243 cfg->hide_trustanchor = 0; 244 cfg->hide_http_user_agent = 0; 245 cfg->identity = NULL; 246 cfg->version = NULL; 247 cfg->http_user_agent = NULL; 248 cfg->nsid_cfg_str = NULL; 249 cfg->nsid = NULL; 250 cfg->nsid_len = 0; 251 cfg->auto_trust_anchor_file_list = NULL; 252 cfg->trust_anchor_file_list = NULL; 253 cfg->trust_anchor_list = NULL; 254 cfg->trusted_keys_file_list = NULL; 255 cfg->trust_anchor_signaling = 1; 256 cfg->root_key_sentinel = 1; 257 cfg->domain_insecure = NULL; 258 cfg->val_date_override = 0; 259 cfg->val_sig_skew_min = 3600; /* at least daylight savings trouble */ 260 cfg->val_sig_skew_max = 86400; /* at most timezone settings trouble */ 261 cfg->val_max_restart = 5; 262 cfg->val_clean_additional = 1; 263 cfg->val_log_level = 0; 264 cfg->val_log_squelch = 0; 265 cfg->val_permissive_mode = 0; 266 cfg->aggressive_nsec = 1; 267 cfg->ignore_cd = 0; 268 cfg->serve_expired = 0; 269 cfg->serve_expired_ttl = 0; 270 cfg->serve_expired_ttl_reset = 0; 271 cfg->serve_expired_reply_ttl = 30; 272 cfg->serve_expired_client_timeout = 0; 273 cfg->ede_serve_expired = 0; 274 cfg->serve_original_ttl = 0; 275 cfg->zonemd_permissive_mode = 0; 276 cfg->add_holddown = 30*24*3600; 277 cfg->del_holddown = 30*24*3600; 278 cfg->keep_missing = 366*24*3600; /* one year plus a little leeway */ 279 cfg->permit_small_holddown = 0; 280 cfg->key_cache_size = 4 * 1024 * 1024; 281 cfg->key_cache_slabs = 4; 282 cfg->neg_cache_size = 1 * 1024 * 1024; 283 cfg->local_zones = NULL; 284 cfg->local_zones_nodefault = NULL; 285 #ifdef USE_IPSET 286 cfg->local_zones_ipset = NULL; 287 #endif 288 cfg->local_zones_disable_default = 0; 289 cfg->local_data = NULL; 290 cfg->local_zone_overrides = NULL; 291 cfg->unblock_lan_zones = 0; 292 cfg->insecure_lan_zones = 0; 293 cfg->python_script = NULL; 294 cfg->dynlib_file = NULL; 295 cfg->remote_control_enable = 0; 296 cfg->control_ifs.first = NULL; 297 cfg->control_ifs.last = NULL; 298 cfg->control_port = UNBOUND_CONTROL_PORT; 299 cfg->control_use_cert = 1; 300 cfg->minimal_responses = 1; 301 cfg->rrset_roundrobin = 1; 302 cfg->unknown_server_time_limit = 376; 303 cfg->max_udp_size = 4096; 304 if(!(cfg->server_key_file = strdup(RUN_DIR"/unbound_server.key"))) 305 goto error_exit; 306 if(!(cfg->server_cert_file = strdup(RUN_DIR"/unbound_server.pem"))) 307 goto error_exit; 308 if(!(cfg->control_key_file = strdup(RUN_DIR"/unbound_control.key"))) 309 goto error_exit; 310 if(!(cfg->control_cert_file = strdup(RUN_DIR"/unbound_control.pem"))) 311 goto error_exit; 312 313 #ifdef CLIENT_SUBNET 314 if(!(cfg->module_conf = strdup("subnetcache validator iterator"))) goto error_exit; 315 #else 316 if(!(cfg->module_conf = strdup("validator iterator"))) goto error_exit; 317 #endif 318 if(!(cfg->val_nsec3_key_iterations = 319 strdup("1024 150 2048 150 4096 150"))) goto error_exit; 320 #if defined(DNSTAP_SOCKET_PATH) 321 if(!(cfg->dnstap_socket_path = strdup(DNSTAP_SOCKET_PATH))) 322 goto error_exit; 323 #endif 324 cfg->dnstap_bidirectional = 1; 325 cfg->dnstap_tls = 1; 326 cfg->disable_dnssec_lame_check = 0; 327 cfg->ip_ratelimit = 0; 328 cfg->ratelimit = 0; 329 cfg->ip_ratelimit_slabs = 4; 330 cfg->ratelimit_slabs = 4; 331 cfg->ip_ratelimit_size = 4*1024*1024; 332 cfg->ratelimit_size = 4*1024*1024; 333 cfg->ratelimit_for_domain = NULL; 334 cfg->ratelimit_below_domain = NULL; 335 cfg->ip_ratelimit_factor = 10; 336 cfg->ratelimit_factor = 10; 337 cfg->ip_ratelimit_backoff = 0; 338 cfg->ratelimit_backoff = 0; 339 cfg->outbound_msg_retry = 5; 340 cfg->max_sent_count = 32; 341 cfg->max_query_restarts = 11; 342 cfg->qname_minimisation = 1; 343 cfg->qname_minimisation_strict = 0; 344 cfg->shm_enable = 0; 345 cfg->shm_key = 11777; 346 cfg->edns_client_strings = NULL; 347 cfg->edns_client_string_opcode = 65001; 348 cfg->dnscrypt = 0; 349 cfg->dnscrypt_port = 0; 350 cfg->dnscrypt_provider = NULL; 351 cfg->dnscrypt_provider_cert = NULL; 352 cfg->dnscrypt_provider_cert_rotated = NULL; 353 cfg->dnscrypt_secret_key = NULL; 354 cfg->dnscrypt_shared_secret_cache_size = 4*1024*1024; 355 cfg->dnscrypt_shared_secret_cache_slabs = 4; 356 cfg->dnscrypt_nonce_cache_size = 4*1024*1024; 357 cfg->dnscrypt_nonce_cache_slabs = 4; 358 cfg->pad_responses = 1; 359 cfg->pad_responses_block_size = 468; /* from RFC8467 */ 360 cfg->pad_queries = 1; 361 cfg->pad_queries_block_size = 128; /* from RFC8467 */ 362 #ifdef USE_IPSECMOD 363 cfg->ipsecmod_enabled = 1; 364 cfg->ipsecmod_ignore_bogus = 0; 365 cfg->ipsecmod_hook = NULL; 366 cfg->ipsecmod_max_ttl = 3600; 367 cfg->ipsecmod_whitelist = NULL; 368 cfg->ipsecmod_strict = 0; 369 #endif 370 #ifdef USE_CACHEDB 371 if(!(cfg->cachedb_backend = strdup("testframe"))) goto error_exit; 372 if(!(cfg->cachedb_secret = strdup("default"))) goto error_exit; 373 #ifdef USE_REDIS 374 if(!(cfg->redis_server_host = strdup("127.0.0.1"))) goto error_exit; 375 cfg->redis_timeout = 100; 376 cfg->redis_server_port = 6379; 377 cfg->redis_expire_records = 0; 378 #endif /* USE_REDIS */ 379 #endif /* USE_CACHEDB */ 380 #ifdef USE_IPSET 381 cfg->ipset_name_v4 = NULL; 382 cfg->ipset_name_v6 = NULL; 383 #endif 384 cfg->ede = 0; 385 return cfg; 386 error_exit: 387 config_delete(cfg); 388 return NULL; 389 } 390 391 struct config_file* config_create_forlib(void) 392 { 393 struct config_file* cfg = config_create(); 394 if(!cfg) return NULL; 395 /* modifications for library use, less verbose, less memory */ 396 free(cfg->chrootdir); 397 cfg->chrootdir = NULL; 398 cfg->verbosity = 0; 399 cfg->outgoing_num_ports = 16; /* in library use, this is 'reasonable' 400 and probably within the ulimit(maxfds) of the user */ 401 cfg->outgoing_num_tcp = 2; 402 cfg->msg_cache_size = 1024*1024; 403 cfg->msg_cache_slabs = 1; 404 cfg->rrset_cache_size = 1024*1024; 405 cfg->rrset_cache_slabs = 1; 406 cfg->infra_cache_slabs = 1; 407 cfg->use_syslog = 0; 408 cfg->key_cache_size = 1024*1024; 409 cfg->key_cache_slabs = 1; 410 cfg->neg_cache_size = 100 * 1024; 411 cfg->donotquery_localhost = 0; /* allow, so that you can ask a 412 forward nameserver running on localhost */ 413 cfg->val_log_level = 2; /* to fill why_bogus with */ 414 cfg->val_log_squelch = 1; 415 cfg->minimal_responses = 0; 416 cfg->harden_short_bufsize = 1; 417 return cfg; 418 } 419 420 /** check that the value passed is >= 0 */ 421 #define IS_NUMBER_OR_ZERO \ 422 if(atoi(val) == 0 && strcmp(val, "0") != 0) return 0 423 /** check that the value passed is > 0 */ 424 #define IS_NONZERO_NUMBER \ 425 if(atoi(val) == 0) return 0 426 /** check that the value passed is not 0 and a power of 2 */ 427 #define IS_POW2_NUMBER \ 428 if(atoi(val) == 0 || !is_pow2((size_t)atoi(val))) return 0 429 /** check that the value passed is yes or no */ 430 #define IS_YES_OR_NO \ 431 if(strcmp(val, "yes") != 0 && strcmp(val, "no") != 0) return 0 432 /** put integer_or_zero into variable */ 433 #define S_NUMBER_OR_ZERO(str, var) if(strcmp(opt, str) == 0) \ 434 { IS_NUMBER_OR_ZERO; cfg->var = atoi(val); } 435 /** put integer_nonzero into variable */ 436 #define S_NUMBER_NONZERO(str, var) if(strcmp(opt, str) == 0) \ 437 { IS_NONZERO_NUMBER; cfg->var = atoi(val); } 438 /** put integer_or_zero into unsigned */ 439 #define S_UNSIGNED_OR_ZERO(str, var) if(strcmp(opt, str) == 0) \ 440 { IS_NUMBER_OR_ZERO; cfg->var = (unsigned)atoi(val); } 441 /** put integer_or_zero into size_t */ 442 #define S_SIZET_OR_ZERO(str, var) if(strcmp(opt, str) == 0) \ 443 { IS_NUMBER_OR_ZERO; cfg->var = (size_t)atoi(val); } 444 /** put integer_nonzero into size_t */ 445 #define S_SIZET_NONZERO(str, var) if(strcmp(opt, str) == 0) \ 446 { IS_NONZERO_NUMBER; cfg->var = (size_t)atoi(val); } 447 /** put yesno into variable */ 448 #define S_YNO(str, var) if(strcmp(opt, str) == 0) \ 449 { IS_YES_OR_NO; cfg->var = (strcmp(val, "yes") == 0); } 450 /** put memsize into variable */ 451 #define S_MEMSIZE(str, var) if(strcmp(opt, str)==0) \ 452 { return cfg_parse_memsize(val, &cfg->var); } 453 /** put pow2 number into variable */ 454 #define S_POW2(str, var) if(strcmp(opt, str)==0) \ 455 { IS_POW2_NUMBER; cfg->var = (size_t)atoi(val); } 456 /** put string into variable */ 457 #define S_STR(str, var) if(strcmp(opt, str)==0) \ 458 { free(cfg->var); return (cfg->var = strdup(val)) != NULL; } 459 /** put string into strlist */ 460 #define S_STRLIST(str, var) if(strcmp(opt, str)==0) \ 461 { return cfg_strlist_insert(&cfg->var, strdup(val)); } 462 /** put string into strlist if not present yet*/ 463 #define S_STRLIST_UNIQ(str, var) if(strcmp(opt, str)==0) \ 464 { if(cfg_strlist_find(cfg->var, val)) { return 0;} \ 465 return cfg_strlist_insert(&cfg->var, strdup(val)); } 466 /** append string to strlist */ 467 #define S_STRLIST_APPEND(str, var) if(strcmp(opt, str)==0) \ 468 { return cfg_strlist_append(&cfg->var, strdup(val)); } 469 470 int config_set_option(struct config_file* cfg, const char* opt, 471 const char* val) 472 { 473 char buf[64]; 474 if(!opt) return 0; 475 if(opt[strlen(opt)-1] != ':' && strlen(opt)+2<sizeof(buf)) { 476 snprintf(buf, sizeof(buf), "%s:", opt); 477 opt = buf; 478 } 479 S_NUMBER_OR_ZERO("verbosity:", verbosity) 480 else if(strcmp(opt, "statistics-interval:") == 0) { 481 if(strcmp(val, "0") == 0 || strcmp(val, "") == 0) 482 cfg->stat_interval = 0; 483 else if(atoi(val) == 0) 484 return 0; 485 else cfg->stat_interval = atoi(val); 486 } else if(strcmp(opt, "num-threads:") == 0) { 487 /* not supported, library must have 1 thread in bgworker */ 488 return 0; 489 } else if(strcmp(opt, "outgoing-port-permit:") == 0) { 490 return cfg_mark_ports(val, 1, 491 cfg->outgoing_avail_ports, 65536); 492 } else if(strcmp(opt, "outgoing-port-avoid:") == 0) { 493 return cfg_mark_ports(val, 0, 494 cfg->outgoing_avail_ports, 65536); 495 } else if(strcmp(opt, "local-zone:") == 0) { 496 return cfg_parse_local_zone(cfg, val); 497 } else if(strcmp(opt, "val-override-date:") == 0) { 498 if(strcmp(val, "") == 0 || strcmp(val, "0") == 0) { 499 cfg->val_date_override = 0; 500 } else if(strlen(val) == 14) { 501 cfg->val_date_override = cfg_convert_timeval(val); 502 return cfg->val_date_override != 0; 503 } else { 504 if(atoi(val) == 0) return 0; 505 cfg->val_date_override = (uint32_t)atoi(val); 506 } 507 } else if(strcmp(opt, "local-data-ptr:") == 0) { 508 char* ptr = cfg_ptr_reverse((char*)opt); 509 return cfg_strlist_insert(&cfg->local_data, ptr); 510 } else if(strcmp(opt, "logfile:") == 0) { 511 cfg->use_syslog = 0; 512 free(cfg->logfile); 513 return (cfg->logfile = strdup(val)) != NULL; 514 } 515 else if(strcmp(opt, "log-time-ascii:") == 0) 516 { IS_YES_OR_NO; cfg->log_time_ascii = (strcmp(val, "yes") == 0); 517 log_set_time_asc(cfg->log_time_ascii); } 518 else S_SIZET_NONZERO("max-udp-size:", max_udp_size) 519 else S_YNO("use-syslog:", use_syslog) 520 else S_STR("log-identity:", log_identity) 521 else S_YNO("extended-statistics:", stat_extended) 522 else S_YNO("statistics-inhibit-zero:", stat_inhibit_zero) 523 else S_YNO("statistics-cumulative:", stat_cumulative) 524 else S_YNO("shm-enable:", shm_enable) 525 else S_NUMBER_OR_ZERO("shm-key:", shm_key) 526 else S_YNO("do-ip4:", do_ip4) 527 else S_YNO("do-ip6:", do_ip6) 528 else S_YNO("do-udp:", do_udp) 529 else S_YNO("do-tcp:", do_tcp) 530 else S_YNO("prefer-ip4:", prefer_ip4) 531 else S_YNO("prefer-ip6:", prefer_ip6) 532 else S_YNO("tcp-upstream:", tcp_upstream) 533 else S_YNO("udp-upstream-without-downstream:", 534 udp_upstream_without_downstream) 535 else S_NUMBER_NONZERO("tcp-mss:", tcp_mss) 536 else S_NUMBER_NONZERO("outgoing-tcp-mss:", outgoing_tcp_mss) 537 else S_NUMBER_NONZERO("tcp-auth-query-timeout:", tcp_auth_query_timeout) 538 else S_NUMBER_NONZERO("tcp-idle-timeout:", tcp_idle_timeout) 539 else S_NUMBER_NONZERO("max-reuse-tcp-queries:", max_reuse_tcp_queries) 540 else S_NUMBER_NONZERO("tcp-reuse-timeout:", tcp_reuse_timeout) 541 else S_YNO("edns-tcp-keepalive:", do_tcp_keepalive) 542 else S_NUMBER_NONZERO("edns-tcp-keepalive-timeout:", tcp_keepalive_timeout) 543 else S_YNO("ssl-upstream:", ssl_upstream) 544 else S_YNO("tls-upstream:", ssl_upstream) 545 else S_STR("ssl-service-key:", ssl_service_key) 546 else S_STR("tls-service-key:", ssl_service_key) 547 else S_STR("ssl-service-pem:", ssl_service_pem) 548 else S_STR("tls-service-pem:", ssl_service_pem) 549 else S_NUMBER_NONZERO("ssl-port:", ssl_port) 550 else S_NUMBER_NONZERO("tls-port:", ssl_port) 551 else S_STR("ssl-cert-bundle:", tls_cert_bundle) 552 else S_STR("tls-cert-bundle:", tls_cert_bundle) 553 else S_YNO("tls-win-cert:", tls_win_cert) 554 else S_YNO("tls-system-cert:", tls_win_cert) 555 else S_STRLIST("additional-ssl-port:", tls_additional_port) 556 else S_STRLIST("additional-tls-port:", tls_additional_port) 557 else S_STRLIST("tls-additional-ports:", tls_additional_port) 558 else S_STRLIST("tls-additional-port:", tls_additional_port) 559 else S_STRLIST_APPEND("tls-session-ticket-keys:", tls_session_ticket_keys) 560 else S_STR("tls-ciphers:", tls_ciphers) 561 else S_STR("tls-ciphersuites:", tls_ciphersuites) 562 else S_YNO("tls-use-sni:", tls_use_sni) 563 else S_NUMBER_NONZERO("https-port:", https_port) 564 else S_STR("http-endpoint:", http_endpoint) 565 else S_NUMBER_NONZERO("http-max-streams:", http_max_streams) 566 else S_MEMSIZE("http-query-buffer-size:", http_query_buffer_size) 567 else S_MEMSIZE("http-response-buffer-size:", http_response_buffer_size) 568 else S_YNO("http-nodelay:", http_nodelay) 569 else S_YNO("http-notls-downstream:", http_notls_downstream) 570 else S_YNO("interface-automatic:", if_automatic) 571 else S_STR("interface-automatic-ports:", if_automatic_ports) 572 else S_YNO("use-systemd:", use_systemd) 573 else S_YNO("do-daemonize:", do_daemonize) 574 else S_NUMBER_NONZERO("port:", port) 575 else S_NUMBER_NONZERO("outgoing-range:", outgoing_num_ports) 576 else S_SIZET_OR_ZERO("outgoing-num-tcp:", outgoing_num_tcp) 577 else S_SIZET_OR_ZERO("incoming-num-tcp:", incoming_num_tcp) 578 else S_MEMSIZE("stream-wait-size:", stream_wait_size) 579 else S_SIZET_NONZERO("edns-buffer-size:", edns_buffer_size) 580 else S_SIZET_NONZERO("msg-buffer-size:", msg_buffer_size) 581 else S_MEMSIZE("msg-cache-size:", msg_cache_size) 582 else S_POW2("msg-cache-slabs:", msg_cache_slabs) 583 else S_SIZET_NONZERO("num-queries-per-thread:",num_queries_per_thread) 584 else S_SIZET_OR_ZERO("jostle-timeout:", jostle_time) 585 else S_MEMSIZE("so-rcvbuf:", so_rcvbuf) 586 else S_MEMSIZE("so-sndbuf:", so_sndbuf) 587 else S_YNO("so-reuseport:", so_reuseport) 588 else S_YNO("ip-transparent:", ip_transparent) 589 else S_YNO("ip-freebind:", ip_freebind) 590 else S_NUMBER_OR_ZERO("ip-dscp:", ip_dscp) 591 else S_MEMSIZE("rrset-cache-size:", rrset_cache_size) 592 else S_POW2("rrset-cache-slabs:", rrset_cache_slabs) 593 else S_YNO("prefetch:", prefetch) 594 else S_YNO("prefetch-key:", prefetch_key) 595 else S_YNO("deny-any:", deny_any) 596 else if(strcmp(opt, "cache-max-ttl:") == 0) 597 { IS_NUMBER_OR_ZERO; cfg->max_ttl = atoi(val); MAX_TTL=(time_t)cfg->max_ttl;} 598 else if(strcmp(opt, "cache-max-negative-ttl:") == 0) 599 { IS_NUMBER_OR_ZERO; cfg->max_negative_ttl = atoi(val); MAX_NEG_TTL=(time_t)cfg->max_negative_ttl;} 600 else if(strcmp(opt, "cache-min-ttl:") == 0) 601 { IS_NUMBER_OR_ZERO; cfg->min_ttl = atoi(val); MIN_TTL=(time_t)cfg->min_ttl;} 602 else if(strcmp(opt, "infra-cache-min-rtt:") == 0) { 603 IS_NUMBER_OR_ZERO; cfg->infra_cache_min_rtt = atoi(val); 604 RTT_MIN_TIMEOUT=cfg->infra_cache_min_rtt; 605 } 606 else if(strcmp(opt, "infra-cache-max-rtt:") == 0) { 607 IS_NUMBER_OR_ZERO; cfg->infra_cache_max_rtt = atoi(val); 608 RTT_MAX_TIMEOUT=cfg->infra_cache_max_rtt; 609 USEFUL_SERVER_TOP_TIMEOUT = RTT_MAX_TIMEOUT; 610 BLACKLIST_PENALTY = USEFUL_SERVER_TOP_TIMEOUT*4; 611 } 612 else S_YNO("infra-keep-probing:", infra_keep_probing) 613 else S_NUMBER_OR_ZERO("infra-host-ttl:", host_ttl) 614 else S_POW2("infra-cache-slabs:", infra_cache_slabs) 615 else S_SIZET_NONZERO("infra-cache-numhosts:", infra_cache_numhosts) 616 else S_NUMBER_OR_ZERO("delay-close:", delay_close) 617 else S_YNO("udp-connect:", udp_connect) 618 else S_STR("chroot:", chrootdir) 619 else S_STR("username:", username) 620 else S_STR("directory:", directory) 621 else S_STR("pidfile:", pidfile) 622 else S_YNO("hide-identity:", hide_identity) 623 else S_YNO("hide-version:", hide_version) 624 else S_YNO("hide-trustanchor:", hide_trustanchor) 625 else S_YNO("hide-http-user-agent:", hide_http_user_agent) 626 else S_STR("identity:", identity) 627 else S_STR("version:", version) 628 else S_STR("http-user-agent:", http_user_agent) 629 else if(strcmp(opt, "nsid:") == 0) { 630 free(cfg->nsid_cfg_str); 631 if (!(cfg->nsid_cfg_str = strdup(val))) 632 return 0; 633 /* Empty string is just validly unsetting nsid */ 634 if (*val == 0) { 635 free(cfg->nsid); 636 cfg->nsid = NULL; 637 cfg->nsid_len = 0; 638 return 1; 639 } 640 cfg->nsid = cfg_parse_nsid(val, &cfg->nsid_len); 641 return cfg->nsid != NULL; 642 } 643 else S_STRLIST("root-hints:", root_hints) 644 else S_STR("target-fetch-policy:", target_fetch_policy) 645 else S_YNO("harden-glue:", harden_glue) 646 else S_YNO("harden-short-bufsize:", harden_short_bufsize) 647 else S_YNO("harden-large-queries:", harden_large_queries) 648 else S_YNO("harden-dnssec-stripped:", harden_dnssec_stripped) 649 else S_YNO("harden-below-nxdomain:", harden_below_nxdomain) 650 else S_YNO("harden-referral-path:", harden_referral_path) 651 else S_YNO("harden-algo-downgrade:", harden_algo_downgrade) 652 else S_YNO("use-caps-for-id:", use_caps_bits_for_id) 653 else S_STRLIST("caps-whitelist:", caps_whitelist) 654 else S_SIZET_OR_ZERO("unwanted-reply-threshold:", unwanted_threshold) 655 else S_STRLIST("private-address:", private_address) 656 else S_STRLIST("private-domain:", private_domain) 657 else S_YNO("do-not-query-localhost:", donotquery_localhost) 658 else S_STRLIST("do-not-query-address:", donotqueryaddrs) 659 else S_STRLIST("auto-trust-anchor-file:", auto_trust_anchor_file_list) 660 else S_STRLIST("trust-anchor-file:", trust_anchor_file_list) 661 else S_STRLIST("trust-anchor:", trust_anchor_list) 662 else S_STRLIST("trusted-keys-file:", trusted_keys_file_list) 663 else S_YNO("trust-anchor-signaling:", trust_anchor_signaling) 664 else S_YNO("root-key-sentinel:", root_key_sentinel) 665 else S_STRLIST("domain-insecure:", domain_insecure) 666 else S_NUMBER_OR_ZERO("val-bogus-ttl:", bogus_ttl) 667 else S_YNO("val-clean-additional:", val_clean_additional) 668 else S_NUMBER_OR_ZERO("val-log-level:", val_log_level) 669 else S_YNO("val-log-squelch:", val_log_squelch) 670 else S_YNO("log-queries:", log_queries) 671 else S_YNO("log-replies:", log_replies) 672 else S_YNO("log-tag-queryreply:", log_tag_queryreply) 673 else S_YNO("log-local-actions:", log_local_actions) 674 else S_YNO("log-servfail:", log_servfail) 675 else S_YNO("val-permissive-mode:", val_permissive_mode) 676 else S_YNO("aggressive-nsec:", aggressive_nsec) 677 else S_YNO("ignore-cd-flag:", ignore_cd) 678 else if(strcmp(opt, "serve-expired:") == 0) 679 { IS_YES_OR_NO; cfg->serve_expired = (strcmp(val, "yes") == 0); 680 SERVE_EXPIRED = cfg->serve_expired; } 681 else if(strcmp(opt, "serve-expired-ttl:") == 0) 682 { IS_NUMBER_OR_ZERO; cfg->serve_expired_ttl = atoi(val); SERVE_EXPIRED_TTL=(time_t)cfg->serve_expired_ttl;} 683 else S_YNO("serve-expired-ttl-reset:", serve_expired_ttl_reset) 684 else if(strcmp(opt, "serve-expired-reply-ttl:") == 0) 685 { IS_NUMBER_OR_ZERO; cfg->serve_expired_reply_ttl = atoi(val); SERVE_EXPIRED_REPLY_TTL=(time_t)cfg->serve_expired_reply_ttl;} 686 else S_NUMBER_OR_ZERO("serve-expired-client-timeout:", serve_expired_client_timeout) 687 else S_YNO("ede:", ede) 688 else S_YNO("ede-serve-expired:", ede_serve_expired) 689 else S_YNO("serve-original-ttl:", serve_original_ttl) 690 else S_STR("val-nsec3-keysize-iterations:", val_nsec3_key_iterations) 691 else S_YNO("zonemd-permissive-mode:", zonemd_permissive_mode) 692 else S_UNSIGNED_OR_ZERO("add-holddown:", add_holddown) 693 else S_UNSIGNED_OR_ZERO("del-holddown:", del_holddown) 694 else S_UNSIGNED_OR_ZERO("keep-missing:", keep_missing) 695 else if(strcmp(opt, "permit-small-holddown:") == 0) 696 { IS_YES_OR_NO; cfg->permit_small_holddown = (strcmp(val, "yes") == 0); 697 autr_permit_small_holddown = cfg->permit_small_holddown; } 698 else S_MEMSIZE("key-cache-size:", key_cache_size) 699 else S_POW2("key-cache-slabs:", key_cache_slabs) 700 else S_MEMSIZE("neg-cache-size:", neg_cache_size) 701 else S_YNO("minimal-responses:", minimal_responses) 702 else S_YNO("rrset-roundrobin:", rrset_roundrobin) 703 else S_NUMBER_OR_ZERO("unknown-server-time-limit:", unknown_server_time_limit) 704 else S_STRLIST("local-data:", local_data) 705 else S_YNO("unblock-lan-zones:", unblock_lan_zones) 706 else S_YNO("insecure-lan-zones:", insecure_lan_zones) 707 else S_YNO("control-enable:", remote_control_enable) 708 else S_STRLIST_APPEND("control-interface:", control_ifs) 709 else S_NUMBER_NONZERO("control-port:", control_port) 710 else S_STR("server-key-file:", server_key_file) 711 else S_STR("server-cert-file:", server_cert_file) 712 else S_STR("control-key-file:", control_key_file) 713 else S_STR("control-cert-file:", control_cert_file) 714 else S_STR("module-config:", module_conf) 715 else S_STRLIST("python-script:", python_script) 716 else S_STRLIST("dynlib-file:", dynlib_file) 717 else S_YNO("disable-dnssec-lame-check:", disable_dnssec_lame_check) 718 #ifdef CLIENT_SUBNET 719 /* Can't set max subnet prefix here, since that value is used when 720 * generating the address tree. */ 721 /* No client-subnet-always-forward here, module registration depends on 722 * this option. */ 723 #endif 724 #ifdef USE_DNSTAP 725 else S_YNO("dnstap-enable:", dnstap) 726 else S_YNO("dnstap-bidirectional:", dnstap_bidirectional) 727 else S_STR("dnstap-socket-path:", dnstap_socket_path) 728 else S_STR("dnstap-ip:", dnstap_ip) 729 else S_YNO("dnstap-tls:", dnstap_tls) 730 else S_STR("dnstap-tls-server-name:", dnstap_tls_server_name) 731 else S_STR("dnstap-tls-cert-bundle:", dnstap_tls_cert_bundle) 732 else S_STR("dnstap-tls-client-key-file:", dnstap_tls_client_key_file) 733 else S_STR("dnstap-tls-client-cert-file:", 734 dnstap_tls_client_cert_file) 735 else S_YNO("dnstap-send-identity:", dnstap_send_identity) 736 else S_YNO("dnstap-send-version:", dnstap_send_version) 737 else S_STR("dnstap-identity:", dnstap_identity) 738 else S_STR("dnstap-version:", dnstap_version) 739 else S_YNO("dnstap-log-resolver-query-messages:", 740 dnstap_log_resolver_query_messages) 741 else S_YNO("dnstap-log-resolver-response-messages:", 742 dnstap_log_resolver_response_messages) 743 else S_YNO("dnstap-log-client-query-messages:", 744 dnstap_log_client_query_messages) 745 else S_YNO("dnstap-log-client-response-messages:", 746 dnstap_log_client_response_messages) 747 else S_YNO("dnstap-log-forwarder-query-messages:", 748 dnstap_log_forwarder_query_messages) 749 else S_YNO("dnstap-log-forwarder-response-messages:", 750 dnstap_log_forwarder_response_messages) 751 #endif 752 #ifdef USE_DNSCRYPT 753 else S_YNO("dnscrypt-enable:", dnscrypt) 754 else S_NUMBER_NONZERO("dnscrypt-port:", dnscrypt_port) 755 else S_STR("dnscrypt-provider:", dnscrypt_provider) 756 else S_STRLIST_UNIQ("dnscrypt-provider-cert:", dnscrypt_provider_cert) 757 else S_STRLIST("dnscrypt-provider-cert-rotated:", dnscrypt_provider_cert_rotated) 758 else S_STRLIST_UNIQ("dnscrypt-secret-key:", dnscrypt_secret_key) 759 else S_MEMSIZE("dnscrypt-shared-secret-cache-size:", 760 dnscrypt_shared_secret_cache_size) 761 else S_POW2("dnscrypt-shared-secret-cache-slabs:", 762 dnscrypt_shared_secret_cache_slabs) 763 else S_MEMSIZE("dnscrypt-nonce-cache-size:", 764 dnscrypt_nonce_cache_size) 765 else S_POW2("dnscrypt-nonce-cache-slabs:", 766 dnscrypt_nonce_cache_slabs) 767 #endif 768 else if(strcmp(opt, "ip-ratelimit:") == 0) { 769 IS_NUMBER_OR_ZERO; cfg->ip_ratelimit = atoi(val); 770 infra_ip_ratelimit=cfg->ip_ratelimit; 771 } 772 else if(strcmp(opt, "ratelimit:") == 0) { 773 IS_NUMBER_OR_ZERO; cfg->ratelimit = atoi(val); 774 infra_dp_ratelimit=cfg->ratelimit; 775 } 776 else S_MEMSIZE("ip-ratelimit-size:", ip_ratelimit_size) 777 else S_MEMSIZE("ratelimit-size:", ratelimit_size) 778 else S_POW2("ip-ratelimit-slabs:", ip_ratelimit_slabs) 779 else S_POW2("ratelimit-slabs:", ratelimit_slabs) 780 else S_NUMBER_OR_ZERO("ip-ratelimit-factor:", ip_ratelimit_factor) 781 else S_NUMBER_OR_ZERO("ratelimit-factor:", ratelimit_factor) 782 else S_YNO("ip-ratelimit-backoff:", ip_ratelimit_backoff) 783 else S_YNO("ratelimit-backoff:", ratelimit_backoff) 784 else S_NUMBER_NONZERO("outbound-msg-retry:", outbound_msg_retry) 785 else S_NUMBER_NONZERO("max-sent-count:", max_sent_count) 786 else S_NUMBER_NONZERO("max-query-restarts:", max_query_restarts) 787 else S_SIZET_NONZERO("fast-server-num:", fast_server_num) 788 else S_NUMBER_OR_ZERO("fast-server-permil:", fast_server_permil) 789 else S_YNO("qname-minimisation:", qname_minimisation) 790 else S_YNO("qname-minimisation-strict:", qname_minimisation_strict) 791 else S_YNO("pad-responses:", pad_responses) 792 else S_SIZET_NONZERO("pad-responses-block-size:", pad_responses_block_size) 793 else S_YNO("pad-queries:", pad_queries) 794 else S_SIZET_NONZERO("pad-queries-block-size:", pad_queries_block_size) 795 else S_STRLIST("proxy-protocol-port:", proxy_protocol_port) 796 #ifdef USE_IPSECMOD 797 else S_YNO("ipsecmod-enabled:", ipsecmod_enabled) 798 else S_YNO("ipsecmod-ignore-bogus:", ipsecmod_ignore_bogus) 799 else if(strcmp(opt, "ipsecmod-max-ttl:") == 0) 800 { IS_NUMBER_OR_ZERO; cfg->ipsecmod_max_ttl = atoi(val); } 801 else S_YNO("ipsecmod-strict:", ipsecmod_strict) 802 #endif 803 else if(strcmp(opt, "define-tag:") ==0) { 804 return config_add_tag(cfg, val); 805 /* val_sig_skew_min, max and val_max_restart are copied into val_env 806 * during init so this does not update val_env with set_option */ 807 } else if(strcmp(opt, "val-sig-skew-min:") == 0) 808 { IS_NUMBER_OR_ZERO; cfg->val_sig_skew_min = (int32_t)atoi(val); } 809 else if(strcmp(opt, "val-sig-skew-max:") == 0) 810 { IS_NUMBER_OR_ZERO; cfg->val_sig_skew_max = (int32_t)atoi(val); } 811 else if(strcmp(opt, "val-max-restart:") == 0) 812 { IS_NUMBER_OR_ZERO; cfg->val_max_restart = (int32_t)atoi(val); } 813 else if (strcmp(opt, "outgoing-interface:") == 0) { 814 char* d = strdup(val); 815 char** oi = 816 (char**)reallocarray(NULL, (size_t)cfg->num_out_ifs+1, sizeof(char*)); 817 if(!d || !oi) { free(d); free(oi); return -1; } 818 if(cfg->out_ifs && cfg->num_out_ifs) { 819 memmove(oi, cfg->out_ifs, cfg->num_out_ifs*sizeof(char*)); 820 free(cfg->out_ifs); 821 } 822 oi[cfg->num_out_ifs++] = d; 823 cfg->out_ifs = oi; 824 } else { 825 /* unknown or unsupported (from the set_option interface): 826 * interface, outgoing-interface, access-control, 827 * stub-zone, name, stub-addr, stub-host, stub-prime 828 * forward-first, stub-first, forward-ssl-upstream, 829 * stub-ssl-upstream, forward-zone, auth-zone 830 * name, forward-addr, forward-host, 831 * ratelimit-for-domain, ratelimit-below-domain, 832 * local-zone-tag, access-control-view, interface-*, 833 * send-client-subnet, client-subnet-always-forward, 834 * max-client-subnet-ipv4, max-client-subnet-ipv6, 835 * min-client-subnet-ipv4, min-client-subnet-ipv6, 836 * max-ecs-tree-size-ipv4, max-ecs-tree-size-ipv6, ipsecmod_hook, 837 * ipsecmod_whitelist. */ 838 return 0; 839 } 840 return 1; 841 } 842 843 void config_print_func(char* line, void* arg) 844 { 845 FILE* f = (FILE*)arg; 846 (void)fprintf(f, "%s\n", line); 847 } 848 849 /** collate func arg */ 850 struct config_collate_arg { 851 /** list of result items */ 852 struct config_strlist_head list; 853 /** if a malloc error occurred, 0 is OK */ 854 int status; 855 }; 856 857 void config_collate_func(char* line, void* arg) 858 { 859 struct config_collate_arg* m = (struct config_collate_arg*)arg; 860 if(m->status) 861 return; 862 if(!cfg_strlist_append(&m->list, strdup(line))) 863 m->status = 1; 864 } 865 866 int config_get_option_list(struct config_file* cfg, const char* opt, 867 struct config_strlist** list) 868 { 869 struct config_collate_arg m; 870 memset(&m, 0, sizeof(m)); 871 *list = NULL; 872 if(!config_get_option(cfg, opt, config_collate_func, &m)) 873 return 1; 874 if(m.status) { 875 config_delstrlist(m.list.first); 876 return 2; 877 } 878 *list = m.list.first; 879 return 0; 880 } 881 882 int 883 config_get_option_collate(struct config_file* cfg, const char* opt, char** str) 884 { 885 struct config_strlist* list = NULL; 886 int r; 887 *str = NULL; 888 if((r = config_get_option_list(cfg, opt, &list)) != 0) 889 return r; 890 *str = config_collate_cat(list); 891 config_delstrlist(list); 892 if(!*str) return 2; 893 return 0; 894 } 895 896 char* 897 config_collate_cat(struct config_strlist* list) 898 { 899 size_t total = 0, left; 900 struct config_strlist* s; 901 char *r, *w; 902 if(!list) /* no elements */ 903 return strdup(""); 904 if(list->next == NULL) /* one element , no newline at end. */ 905 return strdup(list->str); 906 /* count total length */ 907 for(s=list; s; s=s->next) 908 total += strlen(s->str) + 1; /* len + newline */ 909 left = total+1; /* one extra for nul at end */ 910 r = malloc(left); 911 if(!r) 912 return NULL; 913 w = r; 914 for(s=list; s; s=s->next) { 915 size_t this = strlen(s->str); 916 if(this+2 > left) { /* sanity check */ 917 free(r); 918 return NULL; 919 } 920 snprintf(w, left, "%s\n", s->str); 921 this = strlen(w); 922 w += this; 923 left -= this; 924 } 925 return r; 926 } 927 928 /** compare and print decimal option */ 929 #define O_DEC(opt, str, var) if(strcmp(opt, str)==0) \ 930 {snprintf(buf, len, "%d", (int)cfg->var); \ 931 func(buf, arg);} 932 /** compare and print unsigned option */ 933 #define O_UNS(opt, str, var) if(strcmp(opt, str)==0) \ 934 {snprintf(buf, len, "%u", (unsigned)cfg->var); \ 935 func(buf, arg);} 936 /** compare and print yesno option */ 937 #define O_YNO(opt, str, var) if(strcmp(opt, str)==0) \ 938 {func(cfg->var?"yes":"no", arg);} 939 /** compare and print string option */ 940 #define O_STR(opt, str, var) if(strcmp(opt, str)==0) \ 941 {func(cfg->var?cfg->var:"", arg);} 942 /** compare and print array option */ 943 #define O_IFC(opt, str, num, arr) if(strcmp(opt, str)==0) \ 944 {int i; for(i=0; i<cfg->num; i++) func(cfg->arr[i], arg);} 945 /** compare and print memorysize option */ 946 #define O_MEM(opt, str, var) if(strcmp(opt, str)==0) { \ 947 if(cfg->var > 1024*1024*1024) { \ 948 size_t f=cfg->var/(size_t)1000000, b=cfg->var%(size_t)1000000; \ 949 snprintf(buf, len, "%u%6.6u", (unsigned)f, (unsigned)b); \ 950 } else snprintf(buf, len, "%u", (unsigned)cfg->var); \ 951 func(buf, arg);} 952 /** compare and print list option */ 953 #define O_LST(opt, name, lst) if(strcmp(opt, name)==0) { \ 954 struct config_strlist* p = cfg->lst; \ 955 for(p = cfg->lst; p; p = p->next) \ 956 func(p->str, arg); \ 957 } 958 /** compare and print list option */ 959 #define O_LS2(opt, name, lst) if(strcmp(opt, name)==0) { \ 960 struct config_str2list* p = cfg->lst; \ 961 for(p = cfg->lst; p; p = p->next) { \ 962 snprintf(buf, len, "%s %s", p->str, p->str2); \ 963 func(buf, arg); \ 964 } \ 965 } 966 /** compare and print list option */ 967 #define O_LS3(opt, name, lst) if(strcmp(opt, name)==0) { \ 968 struct config_str3list* p = cfg->lst; \ 969 for(p = cfg->lst; p; p = p->next) { \ 970 snprintf(buf, len, "%s %s %s", p->str, p->str2, p->str3); \ 971 func(buf, arg); \ 972 } \ 973 } 974 /** compare and print taglist option */ 975 #define O_LTG(opt, name, lst) if(strcmp(opt, name)==0) { \ 976 char* tmpstr = NULL; \ 977 struct config_strbytelist *p = cfg->lst; \ 978 for(p = cfg->lst; p; p = p->next) {\ 979 tmpstr = config_taglist2str(cfg, p->str2, p->str2len); \ 980 if(tmpstr) {\ 981 snprintf(buf, len, "%s %s", p->str, tmpstr); \ 982 func(buf, arg); \ 983 free(tmpstr); \ 984 } \ 985 } \ 986 } 987 988 int 989 config_get_option(struct config_file* cfg, const char* opt, 990 void (*func)(char*,void*), void* arg) 991 { 992 char buf[1024], nopt[64]; 993 size_t len = sizeof(buf); 994 if(!opt) return 0; 995 if(opt && opt[strlen(opt)-1] == ':' && strlen(opt)<sizeof(nopt)) { 996 memmove(nopt, opt, strlen(opt)); 997 nopt[strlen(opt)-1] = 0; 998 opt = nopt; 999 } 1000 fptr_ok(fptr_whitelist_print_func(func)); 1001 O_DEC(opt, "verbosity", verbosity) 1002 else O_DEC(opt, "statistics-interval", stat_interval) 1003 else O_YNO(opt, "statistics-cumulative", stat_cumulative) 1004 else O_YNO(opt, "extended-statistics", stat_extended) 1005 else O_YNO(opt, "statistics-inhibit-zero", stat_inhibit_zero) 1006 else O_YNO(opt, "shm-enable", shm_enable) 1007 else O_DEC(opt, "shm-key", shm_key) 1008 else O_YNO(opt, "use-syslog", use_syslog) 1009 else O_STR(opt, "log-identity", log_identity) 1010 else O_YNO(opt, "log-time-ascii", log_time_ascii) 1011 else O_DEC(opt, "num-threads", num_threads) 1012 else O_IFC(opt, "interface", num_ifs, ifs) 1013 else O_IFC(opt, "outgoing-interface", num_out_ifs, out_ifs) 1014 else O_YNO(opt, "interface-automatic", if_automatic) 1015 else O_STR(opt, "interface-automatic-ports", if_automatic_ports) 1016 else O_DEC(opt, "port", port) 1017 else O_DEC(opt, "outgoing-range", outgoing_num_ports) 1018 else O_DEC(opt, "outgoing-num-tcp", outgoing_num_tcp) 1019 else O_DEC(opt, "incoming-num-tcp", incoming_num_tcp) 1020 else O_MEM(opt, "stream-wait-size", stream_wait_size) 1021 else O_DEC(opt, "edns-buffer-size", edns_buffer_size) 1022 else O_DEC(opt, "msg-buffer-size", msg_buffer_size) 1023 else O_MEM(opt, "msg-cache-size", msg_cache_size) 1024 else O_DEC(opt, "msg-cache-slabs", msg_cache_slabs) 1025 else O_DEC(opt, "num-queries-per-thread", num_queries_per_thread) 1026 else O_UNS(opt, "jostle-timeout", jostle_time) 1027 else O_MEM(opt, "so-rcvbuf", so_rcvbuf) 1028 else O_MEM(opt, "so-sndbuf", so_sndbuf) 1029 else O_YNO(opt, "so-reuseport", so_reuseport) 1030 else O_YNO(opt, "ip-transparent", ip_transparent) 1031 else O_YNO(opt, "ip-freebind", ip_freebind) 1032 else O_DEC(opt, "ip-dscp", ip_dscp) 1033 else O_MEM(opt, "rrset-cache-size", rrset_cache_size) 1034 else O_DEC(opt, "rrset-cache-slabs", rrset_cache_slabs) 1035 else O_YNO(opt, "prefetch-key", prefetch_key) 1036 else O_YNO(opt, "prefetch", prefetch) 1037 else O_YNO(opt, "deny-any", deny_any) 1038 else O_DEC(opt, "cache-max-ttl", max_ttl) 1039 else O_DEC(opt, "cache-max-negative-ttl", max_negative_ttl) 1040 else O_DEC(opt, "cache-min-ttl", min_ttl) 1041 else O_DEC(opt, "infra-host-ttl", host_ttl) 1042 else O_DEC(opt, "infra-cache-slabs", infra_cache_slabs) 1043 else O_DEC(opt, "infra-cache-min-rtt", infra_cache_min_rtt) 1044 else O_UNS(opt, "infra-cache-max-rtt", infra_cache_max_rtt) 1045 else O_YNO(opt, "infra-keep-probing", infra_keep_probing) 1046 else O_MEM(opt, "infra-cache-numhosts", infra_cache_numhosts) 1047 else O_UNS(opt, "delay-close", delay_close) 1048 else O_YNO(opt, "udp-connect", udp_connect) 1049 else O_YNO(opt, "do-ip4", do_ip4) 1050 else O_YNO(opt, "do-ip6", do_ip6) 1051 else O_YNO(opt, "do-udp", do_udp) 1052 else O_YNO(opt, "do-tcp", do_tcp) 1053 else O_YNO(opt, "prefer-ip4", prefer_ip4) 1054 else O_YNO(opt, "prefer-ip6", prefer_ip6) 1055 else O_YNO(opt, "tcp-upstream", tcp_upstream) 1056 else O_YNO(opt, "udp-upstream-without-downstream", udp_upstream_without_downstream) 1057 else O_DEC(opt, "tcp-mss", tcp_mss) 1058 else O_DEC(opt, "outgoing-tcp-mss", outgoing_tcp_mss) 1059 else O_DEC(opt, "tcp-auth-query-timeout", tcp_auth_query_timeout) 1060 else O_DEC(opt, "tcp-idle-timeout", tcp_idle_timeout) 1061 else O_DEC(opt, "max-reuse-tcp-queries", max_reuse_tcp_queries) 1062 else O_DEC(opt, "tcp-reuse-timeout", tcp_reuse_timeout) 1063 else O_YNO(opt, "edns-tcp-keepalive", do_tcp_keepalive) 1064 else O_DEC(opt, "edns-tcp-keepalive-timeout", tcp_keepalive_timeout) 1065 else O_YNO(opt, "ssl-upstream", ssl_upstream) 1066 else O_YNO(opt, "tls-upstream", ssl_upstream) 1067 else O_STR(opt, "ssl-service-key", ssl_service_key) 1068 else O_STR(opt, "tls-service-key", ssl_service_key) 1069 else O_STR(opt, "ssl-service-pem", ssl_service_pem) 1070 else O_STR(opt, "tls-service-pem", ssl_service_pem) 1071 else O_DEC(opt, "ssl-port", ssl_port) 1072 else O_DEC(opt, "tls-port", ssl_port) 1073 else O_STR(opt, "ssl-cert-bundle", tls_cert_bundle) 1074 else O_STR(opt, "tls-cert-bundle", tls_cert_bundle) 1075 else O_YNO(opt, "tls-win-cert", tls_win_cert) 1076 else O_YNO(opt, "tls-system-cert", tls_win_cert) 1077 else O_LST(opt, "additional-ssl-port", tls_additional_port) 1078 else O_LST(opt, "additional-tls-port", tls_additional_port) 1079 else O_LST(opt, "tls-additional-ports", tls_additional_port) 1080 else O_LST(opt, "tls-additional-port", tls_additional_port) 1081 else O_LST(opt, "tls-session-ticket-keys", tls_session_ticket_keys.first) 1082 else O_STR(opt, "tls-ciphers", tls_ciphers) 1083 else O_STR(opt, "tls-ciphersuites", tls_ciphersuites) 1084 else O_YNO(opt, "tls-use-sni", tls_use_sni) 1085 else O_DEC(opt, "https-port", https_port) 1086 else O_STR(opt, "http-endpoint", http_endpoint) 1087 else O_UNS(opt, "http-max-streams", http_max_streams) 1088 else O_MEM(opt, "http-query-buffer-size", http_query_buffer_size) 1089 else O_MEM(opt, "http-response-buffer-size", http_response_buffer_size) 1090 else O_YNO(opt, "http-nodelay", http_nodelay) 1091 else O_YNO(opt, "http-notls-downstream", http_notls_downstream) 1092 else O_YNO(opt, "use-systemd", use_systemd) 1093 else O_YNO(opt, "do-daemonize", do_daemonize) 1094 else O_STR(opt, "chroot", chrootdir) 1095 else O_STR(opt, "username", username) 1096 else O_STR(opt, "directory", directory) 1097 else O_STR(opt, "logfile", logfile) 1098 else O_YNO(opt, "log-queries", log_queries) 1099 else O_YNO(opt, "log-replies", log_replies) 1100 else O_YNO(opt, "log-tag-queryreply", log_tag_queryreply) 1101 else O_YNO(opt, "log-local-actions", log_local_actions) 1102 else O_YNO(opt, "log-servfail", log_servfail) 1103 else O_STR(opt, "pidfile", pidfile) 1104 else O_YNO(opt, "hide-identity", hide_identity) 1105 else O_YNO(opt, "hide-version", hide_version) 1106 else O_YNO(opt, "hide-trustanchor", hide_trustanchor) 1107 else O_YNO(opt, "hide-http-user-agent", hide_http_user_agent) 1108 else O_STR(opt, "identity", identity) 1109 else O_STR(opt, "version", version) 1110 else O_STR(opt, "http-user-agent", http_user_agent) 1111 else O_STR(opt, "nsid", nsid_cfg_str) 1112 else O_STR(opt, "target-fetch-policy", target_fetch_policy) 1113 else O_YNO(opt, "harden-short-bufsize", harden_short_bufsize) 1114 else O_YNO(opt, "harden-large-queries", harden_large_queries) 1115 else O_YNO(opt, "harden-glue", harden_glue) 1116 else O_YNO(opt, "harden-dnssec-stripped", harden_dnssec_stripped) 1117 else O_YNO(opt, "harden-below-nxdomain", harden_below_nxdomain) 1118 else O_YNO(opt, "harden-referral-path", harden_referral_path) 1119 else O_YNO(opt, "harden-algo-downgrade", harden_algo_downgrade) 1120 else O_YNO(opt, "use-caps-for-id", use_caps_bits_for_id) 1121 else O_LST(opt, "caps-whitelist", caps_whitelist) 1122 else O_DEC(opt, "unwanted-reply-threshold", unwanted_threshold) 1123 else O_YNO(opt, "do-not-query-localhost", donotquery_localhost) 1124 else O_STR(opt, "module-config", module_conf) 1125 else O_DEC(opt, "val-bogus-ttl", bogus_ttl) 1126 else O_YNO(opt, "val-clean-additional", val_clean_additional) 1127 else O_DEC(opt, "val-log-level", val_log_level) 1128 else O_YNO(opt, "val-permissive-mode", val_permissive_mode) 1129 else O_YNO(opt, "aggressive-nsec", aggressive_nsec) 1130 else O_YNO(opt, "ignore-cd-flag", ignore_cd) 1131 else O_YNO(opt, "serve-expired", serve_expired) 1132 else O_DEC(opt, "serve-expired-ttl", serve_expired_ttl) 1133 else O_YNO(opt, "serve-expired-ttl-reset", serve_expired_ttl_reset) 1134 else O_DEC(opt, "serve-expired-reply-ttl", serve_expired_reply_ttl) 1135 else O_DEC(opt, "serve-expired-client-timeout", serve_expired_client_timeout) 1136 else O_YNO(opt, "ede", ede) 1137 else O_YNO(opt, "ede-serve-expired", ede_serve_expired) 1138 else O_YNO(opt, "serve-original-ttl", serve_original_ttl) 1139 else O_STR(opt, "val-nsec3-keysize-iterations",val_nsec3_key_iterations) 1140 else O_YNO(opt, "zonemd-permissive-mode", zonemd_permissive_mode) 1141 else O_UNS(opt, "add-holddown", add_holddown) 1142 else O_UNS(opt, "del-holddown", del_holddown) 1143 else O_UNS(opt, "keep-missing", keep_missing) 1144 else O_YNO(opt, "permit-small-holddown", permit_small_holddown) 1145 else O_MEM(opt, "key-cache-size", key_cache_size) 1146 else O_DEC(opt, "key-cache-slabs", key_cache_slabs) 1147 else O_MEM(opt, "neg-cache-size", neg_cache_size) 1148 else O_YNO(opt, "control-enable", remote_control_enable) 1149 else O_DEC(opt, "control-port", control_port) 1150 else O_STR(opt, "server-key-file", server_key_file) 1151 else O_STR(opt, "server-cert-file", server_cert_file) 1152 else O_STR(opt, "control-key-file", control_key_file) 1153 else O_STR(opt, "control-cert-file", control_cert_file) 1154 else O_LST(opt, "root-hints", root_hints) 1155 else O_LS2(opt, "access-control", acls) 1156 else O_LS2(opt, "tcp-connection-limit", tcp_connection_limits) 1157 else O_LST(opt, "do-not-query-address", donotqueryaddrs) 1158 else O_LST(opt, "private-address", private_address) 1159 else O_LST(opt, "private-domain", private_domain) 1160 else O_LST(opt, "auto-trust-anchor-file", auto_trust_anchor_file_list) 1161 else O_LST(opt, "trust-anchor-file", trust_anchor_file_list) 1162 else O_LST(opt, "trust-anchor", trust_anchor_list) 1163 else O_LST(opt, "trusted-keys-file", trusted_keys_file_list) 1164 else O_YNO(opt, "trust-anchor-signaling", trust_anchor_signaling) 1165 else O_YNO(opt, "root-key-sentinel", root_key_sentinel) 1166 else O_LST(opt, "control-interface", control_ifs.first) 1167 else O_LST(opt, "domain-insecure", domain_insecure) 1168 else O_UNS(opt, "val-override-date", val_date_override) 1169 else O_YNO(opt, "minimal-responses", minimal_responses) 1170 else O_YNO(opt, "rrset-roundrobin", rrset_roundrobin) 1171 else O_DEC(opt, "unknown-server-time-limit", unknown_server_time_limit) 1172 #ifdef CLIENT_SUBNET 1173 else O_LST(opt, "send-client-subnet", client_subnet) 1174 else O_LST(opt, "client-subnet-zone", client_subnet_zone) 1175 else O_DEC(opt, "max-client-subnet-ipv4", max_client_subnet_ipv4) 1176 else O_DEC(opt, "max-client-subnet-ipv6", max_client_subnet_ipv6) 1177 else O_DEC(opt, "min-client-subnet-ipv4", min_client_subnet_ipv4) 1178 else O_DEC(opt, "min-client-subnet-ipv6", min_client_subnet_ipv6) 1179 else O_DEC(opt, "max-ecs-tree-size-ipv4", max_ecs_tree_size_ipv4) 1180 else O_DEC(opt, "max-ecs-tree-size-ipv6", max_ecs_tree_size_ipv6) 1181 else O_YNO(opt, "client-subnet-always-forward:", 1182 client_subnet_always_forward) 1183 #endif 1184 #ifdef USE_DNSTAP 1185 else O_YNO(opt, "dnstap-enable", dnstap) 1186 else O_YNO(opt, "dnstap-bidirectional", dnstap_bidirectional) 1187 else O_STR(opt, "dnstap-socket-path", dnstap_socket_path) 1188 else O_STR(opt, "dnstap-ip", dnstap_ip) 1189 else O_YNO(opt, "dnstap-tls", dnstap_tls) 1190 else O_STR(opt, "dnstap-tls-server-name", dnstap_tls_server_name) 1191 else O_STR(opt, "dnstap-tls-cert-bundle", dnstap_tls_cert_bundle) 1192 else O_STR(opt, "dnstap-tls-client-key-file", 1193 dnstap_tls_client_key_file) 1194 else O_STR(opt, "dnstap-tls-client-cert-file", 1195 dnstap_tls_client_cert_file) 1196 else O_YNO(opt, "dnstap-send-identity", dnstap_send_identity) 1197 else O_YNO(opt, "dnstap-send-version", dnstap_send_version) 1198 else O_STR(opt, "dnstap-identity", dnstap_identity) 1199 else O_STR(opt, "dnstap-version", dnstap_version) 1200 else O_YNO(opt, "dnstap-log-resolver-query-messages", 1201 dnstap_log_resolver_query_messages) 1202 else O_YNO(opt, "dnstap-log-resolver-response-messages", 1203 dnstap_log_resolver_response_messages) 1204 else O_YNO(opt, "dnstap-log-client-query-messages", 1205 dnstap_log_client_query_messages) 1206 else O_YNO(opt, "dnstap-log-client-response-messages", 1207 dnstap_log_client_response_messages) 1208 else O_YNO(opt, "dnstap-log-forwarder-query-messages", 1209 dnstap_log_forwarder_query_messages) 1210 else O_YNO(opt, "dnstap-log-forwarder-response-messages", 1211 dnstap_log_forwarder_response_messages) 1212 #endif 1213 #ifdef USE_DNSCRYPT 1214 else O_YNO(opt, "dnscrypt-enable", dnscrypt) 1215 else O_DEC(opt, "dnscrypt-port", dnscrypt_port) 1216 else O_STR(opt, "dnscrypt-provider", dnscrypt_provider) 1217 else O_LST(opt, "dnscrypt-provider-cert", dnscrypt_provider_cert) 1218 else O_LST(opt, "dnscrypt-provider-cert-rotated", dnscrypt_provider_cert_rotated) 1219 else O_LST(opt, "dnscrypt-secret-key", dnscrypt_secret_key) 1220 else O_MEM(opt, "dnscrypt-shared-secret-cache-size", 1221 dnscrypt_shared_secret_cache_size) 1222 else O_DEC(opt, "dnscrypt-shared-secret-cache-slabs", 1223 dnscrypt_shared_secret_cache_slabs) 1224 else O_MEM(opt, "dnscrypt-nonce-cache-size", 1225 dnscrypt_nonce_cache_size) 1226 else O_DEC(opt, "dnscrypt-nonce-cache-slabs", 1227 dnscrypt_nonce_cache_slabs) 1228 #endif 1229 else O_YNO(opt, "unblock-lan-zones", unblock_lan_zones) 1230 else O_YNO(opt, "insecure-lan-zones", insecure_lan_zones) 1231 else O_DEC(opt, "max-udp-size", max_udp_size) 1232 else O_LST(opt, "python-script", python_script) 1233 else O_LST(opt, "dynlib-file", dynlib_file) 1234 else O_YNO(opt, "disable-dnssec-lame-check", disable_dnssec_lame_check) 1235 else O_DEC(opt, "ip-ratelimit", ip_ratelimit) 1236 else O_DEC(opt, "ratelimit", ratelimit) 1237 else O_MEM(opt, "ip-ratelimit-size", ip_ratelimit_size) 1238 else O_MEM(opt, "ratelimit-size", ratelimit_size) 1239 else O_DEC(opt, "ip-ratelimit-slabs", ip_ratelimit_slabs) 1240 else O_DEC(opt, "ratelimit-slabs", ratelimit_slabs) 1241 else O_LS2(opt, "ratelimit-for-domain", ratelimit_for_domain) 1242 else O_LS2(opt, "ratelimit-below-domain", ratelimit_below_domain) 1243 else O_DEC(opt, "ip-ratelimit-factor", ip_ratelimit_factor) 1244 else O_DEC(opt, "ratelimit-factor", ratelimit_factor) 1245 else O_YNO(opt, "ip-ratelimit-backoff", ip_ratelimit_backoff) 1246 else O_YNO(opt, "ratelimit-backoff", ratelimit_backoff) 1247 else O_UNS(opt, "outbound-msg-retry", outbound_msg_retry) 1248 else O_UNS(opt, "max-sent-count", max_sent_count) 1249 else O_UNS(opt, "max-query-restarts", max_query_restarts) 1250 else O_DEC(opt, "fast-server-num", fast_server_num) 1251 else O_DEC(opt, "fast-server-permil", fast_server_permil) 1252 else O_DEC(opt, "val-sig-skew-min", val_sig_skew_min) 1253 else O_DEC(opt, "val-sig-skew-max", val_sig_skew_max) 1254 else O_DEC(opt, "val-max-restart", val_max_restart) 1255 else O_YNO(opt, "qname-minimisation", qname_minimisation) 1256 else O_YNO(opt, "qname-minimisation-strict", qname_minimisation_strict) 1257 else O_IFC(opt, "define-tag", num_tags, tagname) 1258 else O_LTG(opt, "local-zone-tag", local_zone_tags) 1259 else O_LTG(opt, "access-control-tag", acl_tags) 1260 else O_LTG(opt, "response-ip-tag", respip_tags) 1261 else O_LS3(opt, "local-zone-override", local_zone_overrides) 1262 else O_LS3(opt, "access-control-tag-action", acl_tag_actions) 1263 else O_LS3(opt, "access-control-tag-data", acl_tag_datas) 1264 else O_LS2(opt, "access-control-view", acl_view) 1265 else O_LS2(opt, "interface-action", interface_actions) 1266 else O_LTG(opt, "interface-tag", interface_tags) 1267 else O_LS3(opt, "interface-tag-action", interface_tag_actions) 1268 else O_LS3(opt, "interface-tag-data", interface_tag_datas) 1269 else O_LS2(opt, "interface-view", interface_view) 1270 else O_YNO(opt, "pad-responses", pad_responses) 1271 else O_DEC(opt, "pad-responses-block-size", pad_responses_block_size) 1272 else O_YNO(opt, "pad-queries", pad_queries) 1273 else O_DEC(opt, "pad-queries-block-size", pad_queries_block_size) 1274 else O_LS2(opt, "edns-client-strings", edns_client_strings) 1275 else O_LST(opt, "proxy-protocol-port", proxy_protocol_port) 1276 #ifdef USE_IPSECMOD 1277 else O_YNO(opt, "ipsecmod-enabled", ipsecmod_enabled) 1278 else O_YNO(opt, "ipsecmod-ignore-bogus", ipsecmod_ignore_bogus) 1279 else O_STR(opt, "ipsecmod-hook", ipsecmod_hook) 1280 else O_DEC(opt, "ipsecmod-max-ttl", ipsecmod_max_ttl) 1281 else O_LST(opt, "ipsecmod-whitelist", ipsecmod_whitelist) 1282 else O_YNO(opt, "ipsecmod-strict", ipsecmod_strict) 1283 #endif 1284 #ifdef USE_CACHEDB 1285 else O_STR(opt, "backend", cachedb_backend) 1286 else O_STR(opt, "secret-seed", cachedb_secret) 1287 #ifdef USE_REDIS 1288 else O_STR(opt, "redis-server-host", redis_server_host) 1289 else O_DEC(opt, "redis-server-port", redis_server_port) 1290 else O_DEC(opt, "redis-timeout", redis_timeout) 1291 else O_YNO(opt, "redis-expire-records", redis_expire_records) 1292 #endif /* USE_REDIS */ 1293 #endif /* USE_CACHEDB */ 1294 #ifdef USE_IPSET 1295 else O_STR(opt, "name-v4", ipset_name_v4) 1296 else O_STR(opt, "name-v6", ipset_name_v6) 1297 #endif 1298 /* not here: 1299 * outgoing-permit, outgoing-avoid - have list of ports 1300 * local-zone - zones and nodefault variables 1301 * local-data - see below 1302 * local-data-ptr - converted to local-data entries 1303 * stub-zone, name, stub-addr, stub-host, stub-prime 1304 * forward-zone, name, forward-addr, forward-host 1305 */ 1306 else return 0; 1307 return 1; 1308 } 1309 1310 /** initialize the global cfg_parser object */ 1311 static void 1312 create_cfg_parser(struct config_file* cfg, char* filename, const char* chroot) 1313 { 1314 static struct config_parser_state st; 1315 cfg_parser = &st; 1316 cfg_parser->filename = filename; 1317 cfg_parser->line = 1; 1318 cfg_parser->errors = 0; 1319 cfg_parser->cfg = cfg; 1320 cfg_parser->chroot = chroot; 1321 cfg_parser->started_toplevel = 0; 1322 init_cfg_parse(); 1323 } 1324 1325 int 1326 config_read(struct config_file* cfg, const char* filename, const char* chroot) 1327 { 1328 FILE *in; 1329 char *fname = (char*)filename; 1330 #ifdef HAVE_GLOB 1331 glob_t g; 1332 size_t i; 1333 int r, flags; 1334 #endif 1335 if(!fname) 1336 return 1; 1337 1338 /* check for wildcards */ 1339 #ifdef HAVE_GLOB 1340 if(!(!strchr(fname, '*') && !strchr(fname, '?') && !strchr(fname, '[') && 1341 !strchr(fname, '{') && !strchr(fname, '~'))) { 1342 verbose(VERB_QUERY, "wildcard found, processing %s", fname); 1343 flags = 0 1344 #ifdef GLOB_ERR 1345 | GLOB_ERR 1346 #endif 1347 #ifdef GLOB_NOSORT 1348 | GLOB_NOSORT 1349 #endif 1350 #ifdef GLOB_BRACE 1351 | GLOB_BRACE 1352 #endif 1353 #ifdef GLOB_TILDE 1354 | GLOB_TILDE 1355 #endif 1356 ; 1357 memset(&g, 0, sizeof(g)); 1358 r = glob(fname, flags, NULL, &g); 1359 if(r) { 1360 /* some error */ 1361 globfree(&g); 1362 if(r == GLOB_NOMATCH) { 1363 verbose(VERB_QUERY, "include: " 1364 "no matches for %s", fname); 1365 return 1; 1366 } else if(r == GLOB_NOSPACE) { 1367 log_err("include: %s: " 1368 "fnametern out of memory", fname); 1369 } else if(r == GLOB_ABORTED) { 1370 log_err("wildcard include: %s: expansion " 1371 "aborted (%s)", fname, strerror(errno)); 1372 } else { 1373 log_err("wildcard include: %s: expansion " 1374 "failed (%s)", fname, strerror(errno)); 1375 } 1376 /* ignore globs that yield no files */ 1377 return 1; 1378 } 1379 /* process files found, if any */ 1380 for(i=0; i<(size_t)g.gl_pathc; i++) { 1381 if(!config_read(cfg, g.gl_pathv[i], chroot)) { 1382 log_err("error reading wildcard " 1383 "include: %s", g.gl_pathv[i]); 1384 globfree(&g); 1385 return 0; 1386 } 1387 } 1388 globfree(&g); 1389 return 1; 1390 } 1391 #endif /* HAVE_GLOB */ 1392 1393 in = fopen(fname, "r"); 1394 if(!in) { 1395 log_err("Could not open %s: %s", fname, strerror(errno)); 1396 return 0; 1397 } 1398 create_cfg_parser(cfg, fname, chroot); 1399 ub_c_in = in; 1400 ub_c_parse(); 1401 fclose(in); 1402 1403 if(!cfg->dnscrypt) cfg->dnscrypt_port = 0; 1404 1405 if(cfg_parser->errors != 0) { 1406 fprintf(stderr, "read %s failed: %d errors in configuration file\n", 1407 fname, cfg_parser->errors); 1408 errno=EINVAL; 1409 return 0; 1410 } 1411 1412 return 1; 1413 } 1414 1415 struct config_stub* cfg_stub_find(struct config_stub*** pp, const char* nm) 1416 { 1417 struct config_stub* p = *(*pp); 1418 while(p) { 1419 if(strcmp(p->name, nm) == 0) 1420 return p; 1421 (*pp) = &p->next; 1422 p = p->next; 1423 } 1424 return NULL; 1425 } 1426 1427 void 1428 config_delstrlist(struct config_strlist* p) 1429 { 1430 struct config_strlist *np; 1431 while(p) { 1432 np = p->next; 1433 free(p->str); 1434 free(p); 1435 p = np; 1436 } 1437 } 1438 1439 void 1440 config_deldblstrlist(struct config_str2list* p) 1441 { 1442 struct config_str2list *np; 1443 while(p) { 1444 np = p->next; 1445 free(p->str); 1446 free(p->str2); 1447 free(p); 1448 p = np; 1449 } 1450 } 1451 1452 void 1453 config_deltrplstrlist(struct config_str3list* p) 1454 { 1455 struct config_str3list *np; 1456 while(p) { 1457 np = p->next; 1458 free(p->str); 1459 free(p->str2); 1460 free(p->str3); 1461 free(p); 1462 p = np; 1463 } 1464 } 1465 1466 void 1467 config_delauth(struct config_auth* p) 1468 { 1469 if(!p) return; 1470 free(p->name); 1471 config_delstrlist(p->masters); 1472 config_delstrlist(p->urls); 1473 config_delstrlist(p->allow_notify); 1474 free(p->zonefile); 1475 free(p->rpz_taglist); 1476 free(p->rpz_action_override); 1477 free(p->rpz_cname); 1478 free(p->rpz_log_name); 1479 free(p); 1480 } 1481 1482 void 1483 config_delauths(struct config_auth* p) 1484 { 1485 struct config_auth* np; 1486 while(p) { 1487 np = p->next; 1488 config_delauth(p); 1489 p = np; 1490 } 1491 } 1492 1493 void 1494 config_delstub(struct config_stub* p) 1495 { 1496 if(!p) return; 1497 free(p->name); 1498 config_delstrlist(p->hosts); 1499 config_delstrlist(p->addrs); 1500 free(p); 1501 } 1502 1503 void 1504 config_delstubs(struct config_stub* p) 1505 { 1506 struct config_stub* np; 1507 while(p) { 1508 np = p->next; 1509 config_delstub(p); 1510 p = np; 1511 } 1512 } 1513 1514 void 1515 config_delview(struct config_view* p) 1516 { 1517 if(!p) return; 1518 free(p->name); 1519 config_deldblstrlist(p->local_zones); 1520 config_delstrlist(p->local_zones_nodefault); 1521 #ifdef USE_IPSET 1522 config_delstrlist(p->local_zones_ipset); 1523 #endif 1524 config_delstrlist(p->local_data); 1525 free(p); 1526 } 1527 1528 void 1529 config_delviews(struct config_view* p) 1530 { 1531 struct config_view* np; 1532 while(p) { 1533 np = p->next; 1534 config_delview(p); 1535 p = np; 1536 } 1537 } 1538 1539 void 1540 config_del_strarray(char** array, int num) 1541 { 1542 int i; 1543 if(!array) 1544 return; 1545 for(i=0; i<num; i++) { 1546 free(array[i]); 1547 } 1548 free(array); 1549 } 1550 1551 void 1552 config_del_strbytelist(struct config_strbytelist* p) 1553 { 1554 struct config_strbytelist* np; 1555 while(p) { 1556 np = p->next; 1557 free(p->str); 1558 free(p->str2); 1559 free(p); 1560 p = np; 1561 } 1562 } 1563 1564 void 1565 config_delete(struct config_file* cfg) 1566 { 1567 if(!cfg) return; 1568 free(cfg->username); 1569 free(cfg->chrootdir); 1570 free(cfg->directory); 1571 free(cfg->logfile); 1572 free(cfg->pidfile); 1573 free(cfg->if_automatic_ports); 1574 free(cfg->target_fetch_policy); 1575 free(cfg->ssl_service_key); 1576 free(cfg->ssl_service_pem); 1577 free(cfg->tls_cert_bundle); 1578 config_delstrlist(cfg->tls_additional_port); 1579 config_delstrlist(cfg->tls_session_ticket_keys.first); 1580 free(cfg->tls_ciphers); 1581 free(cfg->tls_ciphersuites); 1582 free(cfg->http_endpoint); 1583 if(cfg->log_identity) { 1584 log_ident_revert_to_default(); 1585 free(cfg->log_identity); 1586 } 1587 config_del_strarray(cfg->ifs, cfg->num_ifs); 1588 config_del_strarray(cfg->out_ifs, cfg->num_out_ifs); 1589 config_delstubs(cfg->stubs); 1590 config_delstubs(cfg->forwards); 1591 config_delauths(cfg->auths); 1592 config_delviews(cfg->views); 1593 config_delstrlist(cfg->donotqueryaddrs); 1594 config_delstrlist(cfg->root_hints); 1595 #ifdef CLIENT_SUBNET 1596 config_delstrlist(cfg->client_subnet); 1597 config_delstrlist(cfg->client_subnet_zone); 1598 #endif 1599 free(cfg->identity); 1600 free(cfg->version); 1601 free(cfg->http_user_agent); 1602 free(cfg->nsid_cfg_str); 1603 free(cfg->nsid); 1604 free(cfg->module_conf); 1605 free(cfg->outgoing_avail_ports); 1606 config_delstrlist(cfg->caps_whitelist); 1607 config_delstrlist(cfg->private_address); 1608 config_delstrlist(cfg->private_domain); 1609 config_delstrlist(cfg->auto_trust_anchor_file_list); 1610 config_delstrlist(cfg->trust_anchor_file_list); 1611 config_delstrlist(cfg->trusted_keys_file_list); 1612 config_delstrlist(cfg->trust_anchor_list); 1613 config_delstrlist(cfg->domain_insecure); 1614 config_deldblstrlist(cfg->acls); 1615 config_deldblstrlist(cfg->tcp_connection_limits); 1616 free(cfg->val_nsec3_key_iterations); 1617 config_deldblstrlist(cfg->local_zones); 1618 config_delstrlist(cfg->local_zones_nodefault); 1619 #ifdef USE_IPSET 1620 config_delstrlist(cfg->local_zones_ipset); 1621 #endif 1622 config_delstrlist(cfg->local_data); 1623 config_deltrplstrlist(cfg->local_zone_overrides); 1624 config_del_strarray(cfg->tagname, cfg->num_tags); 1625 config_del_strbytelist(cfg->local_zone_tags); 1626 config_del_strbytelist(cfg->respip_tags); 1627 config_deldblstrlist(cfg->acl_view); 1628 config_del_strbytelist(cfg->acl_tags); 1629 config_deltrplstrlist(cfg->acl_tag_actions); 1630 config_deltrplstrlist(cfg->acl_tag_datas); 1631 config_deldblstrlist(cfg->interface_actions); 1632 config_deldblstrlist(cfg->interface_view); 1633 config_del_strbytelist(cfg->interface_tags); 1634 config_deltrplstrlist(cfg->interface_tag_actions); 1635 config_deltrplstrlist(cfg->interface_tag_datas); 1636 config_delstrlist(cfg->control_ifs.first); 1637 free(cfg->server_key_file); 1638 free(cfg->server_cert_file); 1639 free(cfg->control_key_file); 1640 free(cfg->control_cert_file); 1641 free(cfg->dns64_prefix); 1642 config_delstrlist(cfg->dns64_ignore_aaaa); 1643 free(cfg->dnstap_socket_path); 1644 free(cfg->dnstap_ip); 1645 free(cfg->dnstap_tls_server_name); 1646 free(cfg->dnstap_tls_cert_bundle); 1647 free(cfg->dnstap_tls_client_key_file); 1648 free(cfg->dnstap_tls_client_cert_file); 1649 free(cfg->dnstap_identity); 1650 free(cfg->dnstap_version); 1651 config_deldblstrlist(cfg->ratelimit_for_domain); 1652 config_deldblstrlist(cfg->ratelimit_below_domain); 1653 config_delstrlist(cfg->python_script); 1654 config_delstrlist(cfg->dynlib_file); 1655 config_deldblstrlist(cfg->edns_client_strings); 1656 config_delstrlist(cfg->proxy_protocol_port); 1657 #ifdef USE_IPSECMOD 1658 free(cfg->ipsecmod_hook); 1659 config_delstrlist(cfg->ipsecmod_whitelist); 1660 #endif 1661 #ifdef USE_CACHEDB 1662 free(cfg->cachedb_backend); 1663 free(cfg->cachedb_secret); 1664 #ifdef USE_REDIS 1665 free(cfg->redis_server_host); 1666 #endif /* USE_REDIS */ 1667 #endif /* USE_CACHEDB */ 1668 #ifdef USE_IPSET 1669 free(cfg->ipset_name_v4); 1670 free(cfg->ipset_name_v6); 1671 #endif 1672 free(cfg); 1673 } 1674 1675 static void 1676 init_outgoing_availports(int* a, int num) 1677 { 1678 /* generated with make iana_update */ 1679 const int iana_assigned[] = { 1680 #include "util/iana_ports.inc" 1681 -1 }; /* end marker to put behind trailing comma */ 1682 1683 int i; 1684 /* do not use <1024, that could be trouble with the system, privs */ 1685 for(i=1024; i<num; i++) { 1686 a[i] = i; 1687 } 1688 /* create empty spot at 49152 to keep ephemeral ports available 1689 * to other programs */ 1690 for(i=49152; i<49152+256; i++) 1691 a[i] = 0; 1692 /* pick out all the IANA assigned ports */ 1693 for(i=0; iana_assigned[i]!=-1; i++) { 1694 if(iana_assigned[i] < num) 1695 a[iana_assigned[i]] = 0; 1696 } 1697 } 1698 1699 int 1700 cfg_mark_ports(const char* str, int allow, int* avail, int num) 1701 { 1702 char* mid = strchr(str, '-'); 1703 #ifdef DISABLE_EXPLICIT_PORT_RANDOMISATION 1704 log_warn("Explicit port randomisation disabled, ignoring " 1705 "outgoing-port-permit and outgoing-port-avoid configuration " 1706 "options"); 1707 #endif 1708 if(!mid) { 1709 int port = atoi(str); 1710 if(port == 0 && strcmp(str, "0") != 0) { 1711 log_err("cannot parse port number '%s'", str); 1712 return 0; 1713 } 1714 if(port < num) 1715 avail[port] = (allow?port:0); 1716 } else { 1717 int i, low, high = atoi(mid+1); 1718 char buf[16]; 1719 if(high == 0 && strcmp(mid+1, "0") != 0) { 1720 log_err("cannot parse port number '%s'", mid+1); 1721 return 0; 1722 } 1723 if( (int)(mid-str)+1 >= (int)sizeof(buf) ) { 1724 log_err("cannot parse port number '%s'", str); 1725 return 0; 1726 } 1727 if(mid > str) 1728 memcpy(buf, str, (size_t)(mid-str)); 1729 buf[mid-str] = 0; 1730 low = atoi(buf); 1731 if(low == 0 && strcmp(buf, "0") != 0) { 1732 log_err("cannot parse port number '%s'", buf); 1733 return 0; 1734 } 1735 for(i=low; i<=high; i++) { 1736 if(i < num) 1737 avail[i] = (allow?i:0); 1738 } 1739 return 1; 1740 } 1741 return 1; 1742 } 1743 1744 int 1745 cfg_scan_ports(int* avail, int num) 1746 { 1747 int i; 1748 int count = 0; 1749 for(i=0; i<num; i++) { 1750 if(avail[i]) 1751 count++; 1752 } 1753 return count; 1754 } 1755 1756 int cfg_condense_ports(struct config_file* cfg, int** avail) 1757 { 1758 int num = cfg_scan_ports(cfg->outgoing_avail_ports, 65536); 1759 int i, at = 0; 1760 *avail = NULL; 1761 if(num == 0) 1762 return 0; 1763 *avail = (int*)reallocarray(NULL, (size_t)num, sizeof(int)); 1764 if(!*avail) 1765 return 0; 1766 for(i=0; i<65536; i++) { 1767 if(cfg->outgoing_avail_ports[i]) 1768 (*avail)[at++] = cfg->outgoing_avail_ports[i]; 1769 } 1770 log_assert(at == num); 1771 return num; 1772 } 1773 1774 void cfg_apply_local_port_policy(struct config_file* cfg, int num) { 1775 (void)cfg; 1776 (void)num; 1777 #ifdef USE_LINUX_IP_LOCAL_PORT_RANGE 1778 { 1779 int i = 0; 1780 FILE* range_fd; 1781 if ((range_fd = fopen(LINUX_IP_LOCAL_PORT_RANGE_PATH, "r")) != NULL) { 1782 int min_port = 0; 1783 int max_port = num - 1; 1784 if (fscanf(range_fd, "%d %d", &min_port, &max_port) == 2) { 1785 for(i=0; i<min_port; i++) { 1786 cfg->outgoing_avail_ports[i] = 0; 1787 } 1788 for(i=max_port+1; i<num; i++) { 1789 cfg->outgoing_avail_ports[i] = 0; 1790 } 1791 } else { 1792 log_err("unexpected port range in %s", 1793 LINUX_IP_LOCAL_PORT_RANGE_PATH); 1794 } 1795 fclose(range_fd); 1796 } else { 1797 log_err("failed to read from file: %s (%s)", 1798 LINUX_IP_LOCAL_PORT_RANGE_PATH, 1799 strerror(errno)); 1800 } 1801 } 1802 #endif 1803 } 1804 1805 /** print error with file and line number */ 1806 static void ub_c_error_va_list(const char *fmt, va_list args) 1807 { 1808 cfg_parser->errors++; 1809 fprintf(stderr, "%s:%d: error: ", cfg_parser->filename, 1810 cfg_parser->line); 1811 vfprintf(stderr, fmt, args); 1812 fprintf(stderr, "\n"); 1813 } 1814 1815 /** print error with file and line number */ 1816 void ub_c_error_msg(const char* fmt, ...) 1817 { 1818 va_list args; 1819 va_start(args, fmt); 1820 ub_c_error_va_list(fmt, args); 1821 va_end(args); 1822 } 1823 1824 void ub_c_error(const char *str) 1825 { 1826 cfg_parser->errors++; 1827 if(strcmp(str, "syntax error")==0 && cfg_parser->started_toplevel ==0) 1828 str = "syntax error, is there no section start after an " 1829 "include-toplevel directive perhaps."; 1830 fprintf(stderr, "%s:%d: error: %s\n", cfg_parser->filename, 1831 cfg_parser->line, str); 1832 } 1833 1834 int ub_c_wrap(void) 1835 { 1836 return 1; 1837 } 1838 1839 int cfg_strlist_append(struct config_strlist_head* list, char* item) 1840 { 1841 struct config_strlist *s; 1842 if(!item || !list) { 1843 free(item); 1844 return 0; 1845 } 1846 s = (struct config_strlist*)calloc(1, sizeof(struct config_strlist)); 1847 if(!s) { 1848 free(item); 1849 return 0; 1850 } 1851 s->str = item; 1852 s->next = NULL; 1853 if(list->last) 1854 list->last->next = s; 1855 else 1856 list->first = s; 1857 list->last = s; 1858 return 1; 1859 } 1860 1861 int 1862 cfg_region_strlist_insert(struct regional* region, 1863 struct config_strlist** head, char* item) 1864 { 1865 struct config_strlist *s; 1866 if(!item || !head) 1867 return 0; 1868 s = (struct config_strlist*)regional_alloc_zero(region, 1869 sizeof(struct config_strlist)); 1870 if(!s) 1871 return 0; 1872 s->str = item; 1873 s->next = *head; 1874 *head = s; 1875 return 1; 1876 } 1877 1878 struct config_strlist* 1879 cfg_strlist_find(struct config_strlist* head, const char *item) 1880 { 1881 struct config_strlist *s = head; 1882 if(!head){ 1883 return NULL; 1884 } 1885 while(s) { 1886 if(strcmp(s->str, item) == 0) { 1887 return s; 1888 } 1889 s = s->next; 1890 } 1891 return NULL; 1892 } 1893 1894 int 1895 cfg_strlist_insert(struct config_strlist** head, char* item) 1896 { 1897 struct config_strlist *s; 1898 if(!item || !head) { 1899 free(item); 1900 return 0; 1901 } 1902 s = (struct config_strlist*)calloc(1, sizeof(struct config_strlist)); 1903 if(!s) { 1904 free(item); 1905 return 0; 1906 } 1907 s->str = item; 1908 s->next = *head; 1909 *head = s; 1910 return 1; 1911 } 1912 1913 int 1914 cfg_strlist_append_ex(struct config_strlist** head, char* item) 1915 { 1916 struct config_strlist *s; 1917 if(!item || !head) 1918 return 0; 1919 s = (struct config_strlist*)calloc(1, sizeof(struct config_strlist)); 1920 if(!s) 1921 return 0; 1922 s->str = item; 1923 s->next = NULL; 1924 1925 if (*head==NULL) { 1926 *head = s; 1927 } else { 1928 struct config_strlist *last = *head; 1929 while (last->next!=NULL) { 1930 last = last->next; 1931 } 1932 last->next = s; 1933 } 1934 1935 return 1; 1936 } 1937 1938 int 1939 cfg_str2list_insert(struct config_str2list** head, char* item, char* i2) 1940 { 1941 struct config_str2list *s; 1942 if(!item || !i2 || !head) { 1943 free(item); 1944 free(i2); 1945 return 0; 1946 } 1947 s = (struct config_str2list*)calloc(1, sizeof(struct config_str2list)); 1948 if(!s) { 1949 free(item); 1950 free(i2); 1951 return 0; 1952 } 1953 s->str = item; 1954 s->str2 = i2; 1955 s->next = *head; 1956 *head = s; 1957 return 1; 1958 } 1959 1960 int 1961 cfg_str3list_insert(struct config_str3list** head, char* item, char* i2, 1962 char* i3) 1963 { 1964 struct config_str3list *s; 1965 if(!item || !i2 || !i3 || !head) 1966 return 0; 1967 s = (struct config_str3list*)calloc(1, sizeof(struct config_str3list)); 1968 if(!s) 1969 return 0; 1970 s->str = item; 1971 s->str2 = i2; 1972 s->str3 = i3; 1973 s->next = *head; 1974 *head = s; 1975 return 1; 1976 } 1977 1978 int 1979 cfg_strbytelist_insert(struct config_strbytelist** head, char* item, 1980 uint8_t* i2, size_t i2len) 1981 { 1982 struct config_strbytelist* s; 1983 if(!item || !i2 || !head) 1984 return 0; 1985 s = (struct config_strbytelist*)calloc(1, sizeof(*s)); 1986 if(!s) 1987 return 0; 1988 s->str = item; 1989 s->str2 = i2; 1990 s->str2len = i2len; 1991 s->next = *head; 1992 *head = s; 1993 return 1; 1994 } 1995 1996 time_t 1997 cfg_convert_timeval(const char* str) 1998 { 1999 time_t t; 2000 struct tm tm; 2001 memset(&tm, 0, sizeof(tm)); 2002 if(strlen(str) < 14) 2003 return 0; 2004 if(sscanf(str, "%4d%2d%2d%2d%2d%2d", &tm.tm_year, &tm.tm_mon, 2005 &tm.tm_mday, &tm.tm_hour, &tm.tm_min, &tm.tm_sec) != 6) 2006 return 0; 2007 tm.tm_year -= 1900; 2008 tm.tm_mon--; 2009 /* Check values */ 2010 if (tm.tm_year < 70) return 0; 2011 if (tm.tm_mon < 0 || tm.tm_mon > 11) return 0; 2012 if (tm.tm_mday < 1 || tm.tm_mday > 31) return 0; 2013 if (tm.tm_hour < 0 || tm.tm_hour > 23) return 0; 2014 if (tm.tm_min < 0 || tm.tm_min > 59) return 0; 2015 if (tm.tm_sec < 0 || tm.tm_sec > 59) return 0; 2016 /* call ldns conversion function */ 2017 t = sldns_mktime_from_utc(&tm); 2018 return t; 2019 } 2020 2021 int 2022 cfg_count_numbers(const char* s) 2023 { 2024 /* format ::= (sp num)+ sp */ 2025 /* num ::= [-](0-9)+ */ 2026 /* sp ::= (space|tab)* */ 2027 int num = 0; 2028 while(*s) { 2029 while(*s && isspace((unsigned char)*s)) 2030 s++; 2031 if(!*s) /* end of string */ 2032 break; 2033 if(*s == '-') 2034 s++; 2035 if(!*s) /* only - not allowed */ 2036 return 0; 2037 if(!isdigit((unsigned char)*s)) /* bad character */ 2038 return 0; 2039 while(*s && isdigit((unsigned char)*s)) 2040 s++; 2041 num++; 2042 } 2043 return num; 2044 } 2045 2046 /** all digit number */ 2047 static int isalldigit(const char* str, size_t l) 2048 { 2049 size_t i; 2050 for(i=0; i<l; i++) 2051 if(!isdigit((unsigned char)str[i])) 2052 return 0; 2053 return 1; 2054 } 2055 2056 int 2057 cfg_parse_memsize(const char* str, size_t* res) 2058 { 2059 size_t len; 2060 size_t mult = 1; 2061 if(!str || (len=(size_t)strlen(str)) == 0) { 2062 log_err("not a size: '%s'", str); 2063 return 0; 2064 } 2065 if(isalldigit(str, len)) { 2066 *res = (size_t)atol(str); 2067 return 1; 2068 } 2069 /* check appended num */ 2070 while(len>0 && str[len-1]==' ') 2071 len--; 2072 if(len > 1 && str[len-1] == 'b') 2073 len--; 2074 else if(len > 1 && str[len-1] == 'B') 2075 len--; 2076 2077 if(len > 1 && tolower((unsigned char)str[len-1]) == 'g') 2078 mult = 1024*1024*1024; 2079 else if(len > 1 && tolower((unsigned char)str[len-1]) == 'm') 2080 mult = 1024*1024; 2081 else if(len > 1 && tolower((unsigned char)str[len-1]) == 'k') 2082 mult = 1024; 2083 else if(len > 0 && isdigit((unsigned char)str[len-1])) 2084 mult = 1; 2085 else { 2086 log_err("unknown size specifier: '%s'", str); 2087 return 0; 2088 } 2089 while(len>1 && str[len-2]==' ') 2090 len--; 2091 2092 if(!isalldigit(str, len-1)) { 2093 log_err("unknown size specifier: '%s'", str); 2094 return 0; 2095 } 2096 *res = ((size_t)atol(str)) * mult; 2097 return 1; 2098 } 2099 2100 int 2101 find_tag_id(struct config_file* cfg, const char* tag) 2102 { 2103 int i; 2104 for(i=0; i<cfg->num_tags; i++) { 2105 if(strcmp(cfg->tagname[i], tag) == 0) 2106 return i; 2107 } 2108 return -1; 2109 } 2110 2111 int 2112 config_add_tag(struct config_file* cfg, const char* tag) 2113 { 2114 char** newarray; 2115 char* newtag; 2116 if(find_tag_id(cfg, tag) != -1) 2117 return 1; /* nothing to do */ 2118 newarray = (char**)malloc(sizeof(char*)*(cfg->num_tags+1)); 2119 if(!newarray) 2120 return 0; 2121 newtag = strdup(tag); 2122 if(!newtag) { 2123 free(newarray); 2124 return 0; 2125 } 2126 if(cfg->tagname) { 2127 memcpy(newarray, cfg->tagname, sizeof(char*)*cfg->num_tags); 2128 free(cfg->tagname); 2129 } 2130 newarray[cfg->num_tags++] = newtag; 2131 cfg->tagname = newarray; 2132 return 1; 2133 } 2134 2135 /** set a bit in a bit array */ 2136 static void 2137 cfg_set_bit(uint8_t* bitlist, size_t len, int id) 2138 { 2139 int pos = id/8; 2140 log_assert((size_t)pos < len); 2141 (void)len; 2142 bitlist[pos] |= 1<<(id%8); 2143 } 2144 2145 uint8_t* config_parse_taglist(struct config_file* cfg, char* str, 2146 size_t* listlen) 2147 { 2148 uint8_t* taglist = NULL; 2149 size_t len = 0; 2150 char* p, *s; 2151 2152 /* allocate */ 2153 if(cfg->num_tags == 0) { 2154 log_err("parse taglist, but no tags defined"); 2155 return 0; 2156 } 2157 len = (size_t)(cfg->num_tags+7)/8; 2158 taglist = calloc(1, len); 2159 if(!taglist) { 2160 log_err("out of memory"); 2161 return 0; 2162 } 2163 2164 /* parse */ 2165 s = str; 2166 while((p=strsep(&s, " \t\n")) != NULL) { 2167 if(*p) { 2168 int id = find_tag_id(cfg, p); 2169 /* set this bit in the bitlist */ 2170 if(id == -1) { 2171 log_err("unknown tag: %s", p); 2172 free(taglist); 2173 return 0; 2174 } 2175 cfg_set_bit(taglist, len, id); 2176 } 2177 } 2178 2179 *listlen = len; 2180 return taglist; 2181 } 2182 2183 uint8_t* cfg_parse_nsid(const char* str, uint16_t* nsid_len) 2184 { 2185 uint8_t* nsid = NULL; 2186 2187 if (strncasecmp(str, "ascii_", 6) == 0) { 2188 if ((nsid = (uint8_t *)strdup(str + 6))) 2189 *nsid_len = strlen(str + 6); 2190 2191 } else if (strlen(str) % 2) { 2192 ; /* hex string has even number of characters */ 2193 } 2194 2195 else if (*str && (nsid = calloc(1, strlen(str) / 2))) { 2196 const char *ch; 2197 uint8_t *dp; 2198 2199 for ( ch = str, dp = nsid 2200 ; isxdigit(ch[0]) && isxdigit(ch[1]) 2201 ; ch += 2, dp++) { 2202 *dp = (uint8_t)sldns_hexdigit_to_int(ch[0]) * 16; 2203 *dp += (uint8_t)sldns_hexdigit_to_int(ch[1]); 2204 } 2205 if (*ch) { 2206 free(nsid); 2207 nsid = NULL; 2208 } else 2209 *nsid_len = strlen(str) / 2; 2210 } 2211 return nsid; 2212 } 2213 2214 2215 char* config_taglist2str(struct config_file* cfg, uint8_t* taglist, 2216 size_t taglen) 2217 { 2218 char buf[10240]; 2219 size_t i, j, len = 0; 2220 buf[0] = 0; 2221 for(i=0; i<taglen; i++) { 2222 if(taglist[i] == 0) 2223 continue; 2224 for(j=0; j<8; j++) { 2225 if((taglist[i] & (1<<j)) != 0) { 2226 size_t id = i*8 + j; 2227 snprintf(buf+len, sizeof(buf)-len, "%s%s", 2228 (len==0?"":" "), cfg->tagname[id]); 2229 len += strlen(buf+len); 2230 } 2231 } 2232 } 2233 return strdup(buf); 2234 } 2235 2236 int taglist_intersect(uint8_t* list1, size_t list1len, const uint8_t* list2, 2237 size_t list2len) 2238 { 2239 size_t i; 2240 if(!list1 || !list2) 2241 return 0; 2242 for(i=0; i<list1len && i<list2len; i++) { 2243 if((list1[i] & list2[i]) != 0) 2244 return 1; 2245 } 2246 return 0; 2247 } 2248 2249 void 2250 config_apply(struct config_file* config) 2251 { 2252 MAX_TTL = (time_t)config->max_ttl; 2253 MIN_TTL = (time_t)config->min_ttl; 2254 SERVE_EXPIRED = config->serve_expired; 2255 SERVE_EXPIRED_TTL = (time_t)config->serve_expired_ttl; 2256 SERVE_EXPIRED_REPLY_TTL = (time_t)config->serve_expired_reply_ttl; 2257 SERVE_ORIGINAL_TTL = config->serve_original_ttl; 2258 MAX_NEG_TTL = (time_t)config->max_negative_ttl; 2259 RTT_MIN_TIMEOUT = config->infra_cache_min_rtt; 2260 RTT_MAX_TIMEOUT = config->infra_cache_max_rtt; 2261 EDNS_ADVERTISED_SIZE = (uint16_t)config->edns_buffer_size; 2262 MINIMAL_RESPONSES = config->minimal_responses; 2263 RRSET_ROUNDROBIN = config->rrset_roundrobin; 2264 LOG_TAG_QUERYREPLY = config->log_tag_queryreply; 2265 UNKNOWN_SERVER_NICENESS = config->unknown_server_time_limit; 2266 USEFUL_SERVER_TOP_TIMEOUT = RTT_MAX_TIMEOUT; 2267 BLACKLIST_PENALTY = USEFUL_SERVER_TOP_TIMEOUT*4; 2268 log_set_time_asc(config->log_time_ascii); 2269 autr_permit_small_holddown = config->permit_small_holddown; 2270 stream_wait_max = config->stream_wait_size; 2271 http2_query_buffer_max = config->http_query_buffer_size; 2272 http2_response_buffer_max = config->http_response_buffer_size; 2273 } 2274 2275 void config_lookup_uid(struct config_file* cfg) 2276 { 2277 #ifdef HAVE_GETPWNAM 2278 /* translate username into uid and gid */ 2279 if(cfg->username && cfg->username[0]) { 2280 struct passwd *pwd; 2281 if((pwd = getpwnam(cfg->username)) != NULL) { 2282 cfg_uid = pwd->pw_uid; 2283 cfg_gid = pwd->pw_gid; 2284 } 2285 } 2286 #else 2287 (void)cfg; 2288 #endif 2289 } 2290 2291 /** 2292 * Calculate string length of full pathname in original filesys 2293 * @param fname: the path name to convert. 2294 * Must not be null or empty. 2295 * @param cfg: config struct for chroot and chdir (if set). 2296 * @param use_chdir: if false, only chroot is applied. 2297 * @return length of string. 2298 * remember to allocate one more for 0 at end in mallocs. 2299 */ 2300 static size_t 2301 strlen_after_chroot(const char* fname, struct config_file* cfg, int use_chdir) 2302 { 2303 size_t len = 0; 2304 int slashit = 0; 2305 if(cfg->chrootdir && cfg->chrootdir[0] && 2306 strncmp(cfg->chrootdir, fname, strlen(cfg->chrootdir)) == 0) { 2307 /* already full pathname, return it */ 2308 return strlen(fname); 2309 } 2310 /* chroot */ 2311 if(cfg->chrootdir && cfg->chrootdir[0]) { 2312 /* start with chrootdir */ 2313 len += strlen(cfg->chrootdir); 2314 slashit = 1; 2315 } 2316 /* chdir */ 2317 #ifdef UB_ON_WINDOWS 2318 if(fname[0] != 0 && fname[1] == ':') { 2319 /* full path, no chdir */ 2320 } else 2321 #endif 2322 if(fname[0] == '/' || !use_chdir) { 2323 /* full path, no chdir */ 2324 } else if(cfg->directory && cfg->directory[0]) { 2325 /* prepend chdir */ 2326 if(slashit && cfg->directory[0] != '/') 2327 len++; 2328 if(cfg->chrootdir && cfg->chrootdir[0] && 2329 strncmp(cfg->chrootdir, cfg->directory, 2330 strlen(cfg->chrootdir)) == 0) 2331 len += strlen(cfg->directory)-strlen(cfg->chrootdir); 2332 else len += strlen(cfg->directory); 2333 slashit = 1; 2334 } 2335 /* fname */ 2336 if(slashit && fname[0] != '/') 2337 len++; 2338 len += strlen(fname); 2339 return len; 2340 } 2341 2342 char* 2343 fname_after_chroot(const char* fname, struct config_file* cfg, int use_chdir) 2344 { 2345 size_t len = strlen_after_chroot(fname, cfg, use_chdir)+1; 2346 int slashit = 0; 2347 char* buf = (char*)malloc(len); 2348 if(!buf) 2349 return NULL; 2350 buf[0] = 0; 2351 /* is fname already in chroot ? */ 2352 if(cfg->chrootdir && cfg->chrootdir[0] && 2353 strncmp(cfg->chrootdir, fname, strlen(cfg->chrootdir)) == 0) { 2354 /* already full pathname, return it */ 2355 (void)strlcpy(buf, fname, len); 2356 buf[len-1] = 0; 2357 return buf; 2358 } 2359 /* chroot */ 2360 if(cfg->chrootdir && cfg->chrootdir[0]) { 2361 /* start with chrootdir */ 2362 (void)strlcpy(buf, cfg->chrootdir, len); 2363 slashit = 1; 2364 } 2365 #ifdef UB_ON_WINDOWS 2366 if(fname[0] != 0 && fname[1] == ':') { 2367 /* full path, no chdir */ 2368 } else 2369 #endif 2370 /* chdir */ 2371 if(fname[0] == '/' || !use_chdir) { 2372 /* full path, no chdir */ 2373 } else if(cfg->directory && cfg->directory[0]) { 2374 /* prepend chdir */ 2375 if(slashit && cfg->directory[0] != '/') 2376 (void)strlcat(buf, "/", len); 2377 /* is the directory already in the chroot? */ 2378 if(cfg->chrootdir && cfg->chrootdir[0] && 2379 strncmp(cfg->chrootdir, cfg->directory, 2380 strlen(cfg->chrootdir)) == 0) 2381 (void)strlcat(buf, cfg->directory+strlen(cfg->chrootdir), 2382 len); 2383 else (void)strlcat(buf, cfg->directory, len); 2384 slashit = 1; 2385 } 2386 /* fname */ 2387 if(slashit && fname[0] != '/') 2388 (void)strlcat(buf, "/", len); 2389 (void)strlcat(buf, fname, len); 2390 buf[len-1] = 0; 2391 return buf; 2392 } 2393 2394 /** return next space character in string */ 2395 static char* next_space_pos(const char* str) 2396 { 2397 char* sp = strchr(str, ' '); 2398 char* tab = strchr(str, '\t'); 2399 if(!tab && !sp) 2400 return NULL; 2401 if(!sp) return tab; 2402 if(!tab) return sp; 2403 return (sp<tab)?sp:tab; 2404 } 2405 2406 /** return last space character in string */ 2407 static char* last_space_pos(const char* str) 2408 { 2409 char* sp = strrchr(str, ' '); 2410 char* tab = strrchr(str, '\t'); 2411 if(!tab && !sp) 2412 return NULL; 2413 if(!sp) return tab; 2414 if(!tab) return sp; 2415 return (sp>tab)?sp:tab; 2416 } 2417 2418 int 2419 cfg_parse_local_zone(struct config_file* cfg, const char* val) 2420 { 2421 const char *type, *name_end, *name; 2422 char buf[256]; 2423 2424 /* parse it as: [zone_name] [between stuff] [zone_type] */ 2425 name = val; 2426 while(*name && isspace((unsigned char)*name)) 2427 name++; 2428 if(!*name) { 2429 log_err("syntax error: too short: %s", val); 2430 return 0; 2431 } 2432 name_end = next_space_pos(name); 2433 if(!name_end || !*name_end) { 2434 log_err("syntax error: expected zone type: %s", val); 2435 return 0; 2436 } 2437 if (name_end - name > 255) { 2438 log_err("syntax error: bad zone name: %s", val); 2439 return 0; 2440 } 2441 (void)strlcpy(buf, name, sizeof(buf)); 2442 buf[name_end-name] = '\0'; 2443 2444 type = last_space_pos(name_end); 2445 while(type && *type && isspace((unsigned char)*type)) 2446 type++; 2447 if(!type || !*type) { 2448 log_err("syntax error: expected zone type: %s", val); 2449 return 0; 2450 } 2451 2452 if(strcmp(type, "nodefault")==0) { 2453 return cfg_strlist_insert(&cfg->local_zones_nodefault, 2454 strdup(name)); 2455 #ifdef USE_IPSET 2456 } else if(strcmp(type, "ipset")==0) { 2457 return cfg_strlist_insert(&cfg->local_zones_ipset, 2458 strdup(name)); 2459 #endif 2460 } else { 2461 return cfg_str2list_insert(&cfg->local_zones, strdup(buf), 2462 strdup(type)); 2463 } 2464 } 2465 2466 char* cfg_ptr_reverse(char* str) 2467 { 2468 char* ip, *ip_end; 2469 char* name; 2470 char* result; 2471 char buf[1024]; 2472 struct sockaddr_storage addr; 2473 socklen_t addrlen; 2474 2475 /* parse it as: [IP] [between stuff] [name] */ 2476 ip = str; 2477 while(*ip && isspace((unsigned char)*ip)) 2478 ip++; 2479 if(!*ip) { 2480 log_err("syntax error: too short: %s", str); 2481 return NULL; 2482 } 2483 ip_end = next_space_pos(ip); 2484 if(!ip_end || !*ip_end) { 2485 log_err("syntax error: expected name: %s", str); 2486 return NULL; 2487 } 2488 2489 name = last_space_pos(ip_end); 2490 if(!name || !*name) { 2491 log_err("syntax error: expected name: %s", str); 2492 return NULL; 2493 } 2494 2495 sscanf(ip, "%100s", buf); 2496 buf[sizeof(buf)-1]=0; 2497 2498 if(!ipstrtoaddr(buf, UNBOUND_DNS_PORT, &addr, &addrlen)) { 2499 log_err("syntax error: cannot parse address: %s", str); 2500 return NULL; 2501 } 2502 2503 /* reverse IPv4: 2504 * ddd.ddd.ddd.ddd.in-addr-arpa. 2505 * IPv6: (h.){32}.ip6.arpa. */ 2506 2507 if(addr_is_ip6(&addr, addrlen)) { 2508 uint8_t ad[16]; 2509 const char* hex = "0123456789abcdef"; 2510 char *p = buf; 2511 int i; 2512 memmove(ad, &((struct sockaddr_in6*)&addr)->sin6_addr, 2513 sizeof(ad)); 2514 for(i=15; i>=0; i--) { 2515 uint8_t b = ad[i]; 2516 *p++ = hex[ (b&0x0f) ]; 2517 *p++ = '.'; 2518 *p++ = hex[ (b&0xf0) >> 4 ]; 2519 *p++ = '.'; 2520 } 2521 snprintf(buf+16*4, sizeof(buf)-16*4, "ip6.arpa. "); 2522 } else { 2523 uint8_t ad[4]; 2524 memmove(ad, &((struct sockaddr_in*)&addr)->sin_addr, 2525 sizeof(ad)); 2526 snprintf(buf, sizeof(buf), "%u.%u.%u.%u.in-addr.arpa. ", 2527 (unsigned)ad[3], (unsigned)ad[2], 2528 (unsigned)ad[1], (unsigned)ad[0]); 2529 } 2530 2531 /* printed the reverse address, now the between goop and name on end */ 2532 while(*ip_end && isspace((unsigned char)*ip_end)) 2533 ip_end++; 2534 if(name>ip_end) { 2535 snprintf(buf+strlen(buf), sizeof(buf)-strlen(buf), "%.*s", 2536 (int)(name-ip_end), ip_end); 2537 } 2538 snprintf(buf+strlen(buf), sizeof(buf)-strlen(buf), " PTR %s", name); 2539 2540 result = strdup(buf); 2541 if(!result) { 2542 log_err("out of memory parsing %s", str); 2543 return NULL; 2544 } 2545 return result; 2546 } 2547 2548 #ifdef UB_ON_WINDOWS 2549 char* 2550 w_lookup_reg_str(const char* key, const char* name) 2551 { 2552 HKEY hk = NULL; 2553 DWORD type = 0; 2554 BYTE buf[1024]; 2555 DWORD len = (DWORD)sizeof(buf); 2556 LONG ret; 2557 char* result = NULL; 2558 ret = RegOpenKeyEx(HKEY_LOCAL_MACHINE, key, 0, KEY_READ, &hk); 2559 if(ret == ERROR_FILE_NOT_FOUND) 2560 return NULL; /* key does not exist */ 2561 else if(ret != ERROR_SUCCESS) { 2562 log_err("RegOpenKeyEx failed"); 2563 return NULL; 2564 } 2565 ret = RegQueryValueEx(hk, (LPCTSTR)name, 0, &type, buf, &len); 2566 if(RegCloseKey(hk)) 2567 log_err("RegCloseKey"); 2568 if(ret == ERROR_FILE_NOT_FOUND) 2569 return NULL; /* name does not exist */ 2570 else if(ret != ERROR_SUCCESS) { 2571 log_err("RegQueryValueEx failed"); 2572 return NULL; 2573 } 2574 if(type == REG_SZ || type == REG_MULTI_SZ || type == REG_EXPAND_SZ) { 2575 buf[sizeof(buf)-1] = 0; 2576 buf[sizeof(buf)-2] = 0; /* for multi_sz */ 2577 result = strdup((char*)buf); 2578 if(!result) log_err("out of memory"); 2579 } 2580 return result; 2581 } 2582 2583 void w_config_adjust_directory(struct config_file* cfg) 2584 { 2585 if(cfg->directory && cfg->directory[0]) { 2586 TCHAR dirbuf[2*MAX_PATH+4]; 2587 if(strcmp(cfg->directory, "%EXECUTABLE%") == 0) { 2588 /* get executable path, and if that contains 2589 * directories, snip off the filename part */ 2590 dirbuf[0] = 0; 2591 if(!GetModuleFileName(NULL, dirbuf, MAX_PATH)) 2592 log_err("could not GetModuleFileName"); 2593 if(strrchr(dirbuf, '\\')) { 2594 (strrchr(dirbuf, '\\'))[0] = 0; 2595 } else log_err("GetModuleFileName had no path"); 2596 if(dirbuf[0]) { 2597 /* adjust directory for later lookups to work*/ 2598 free(cfg->directory); 2599 cfg->directory = memdup(dirbuf, strlen(dirbuf)+1); 2600 } 2601 } 2602 } 2603 } 2604 #endif /* UB_ON_WINDOWS */ 2605 2606 int options_remote_is_address(struct config_file* cfg) 2607 { 2608 if(!cfg->remote_control_enable) return 0; 2609 if(!cfg->control_ifs.first) return 1; 2610 if(!cfg->control_ifs.first->str) return 1; 2611 if(cfg->control_ifs.first->str[0] == 0) return 1; 2612 return (cfg->control_ifs.first->str[0] != '/'); 2613 } 2614 2615 /** see if interface is https, its port number == the https port number */ 2616 int 2617 if_is_https(const char* ifname, const char* port, int https_port) 2618 { 2619 char* p = strchr(ifname, '@'); 2620 if(!p && atoi(port) == https_port) 2621 return 1; 2622 if(p && atoi(p+1) == https_port) 2623 return 1; 2624 return 0; 2625 } 2626 2627 /** see if config contains https turned on */ 2628 int cfg_has_https(struct config_file* cfg) 2629 { 2630 int i; 2631 char portbuf[32]; 2632 snprintf(portbuf, sizeof(portbuf), "%d", cfg->port); 2633 for(i = 0; i<cfg->num_ifs; i++) { 2634 if(if_is_https(cfg->ifs[i], portbuf, cfg->https_port)) 2635 return 1; 2636 } 2637 return 0; 2638 } 2639 2640 /** see if interface is PROXYv2, its port number == the proxy port number */ 2641 int 2642 if_is_pp2(const char* ifname, const char* port, 2643 struct config_strlist* proxy_protocol_port) 2644 { 2645 struct config_strlist* s; 2646 char* p = strchr(ifname, '@'); 2647 for(s = proxy_protocol_port; s; s = s->next) { 2648 if(p && atoi(p+1) == atoi(s->str)) 2649 return 1; 2650 if(!p && atoi(port) == atoi(s->str)) 2651 return 1; 2652 } 2653 return 0; 2654 } 2655 2656 /** see if interface is DNSCRYPT, its port number == the dnscrypt port number */ 2657 int 2658 if_is_dnscrypt(const char* ifname, const char* port, int dnscrypt_port) 2659 { 2660 #ifdef USE_DNSCRYPT 2661 return ((strchr(ifname, '@') && 2662 atoi(strchr(ifname, '@')+1) == dnscrypt_port) || 2663 (!strchr(ifname, '@') && atoi(port) == dnscrypt_port)); 2664 #else 2665 (void)ifname; 2666 (void)port; 2667 (void)dnscrypt_port; 2668 return 0; 2669 #endif 2670 } 2671