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 #include <errno.h> 46 #ifdef HAVE_TIME_H 47 #include <time.h> 48 #endif 49 #include "util/log.h" 50 #include "util/configyyrename.h" 51 #include "util/config_file.h" 52 #include "configparser.h" 53 #include "util/net_help.h" 54 #include "util/data/msgparse.h" 55 #include "util/module.h" 56 #include "util/regional.h" 57 #include "util/fptr_wlist.h" 58 #include "util/data/dname.h" 59 #include "util/random.h" 60 #include "util/rtt.h" 61 #include "services/cache/infra.h" 62 #include "sldns/wire2str.h" 63 #include "sldns/parseutil.h" 64 #include "iterator/iterator.h" 65 #ifdef HAVE_GLOB_H 66 # include <glob.h> 67 #endif 68 #ifdef CLIENT_SUBNET 69 #include "edns-subnet/edns-subnet.h" 70 #endif 71 #ifdef HAVE_PWD_H 72 #include <pwd.h> 73 #endif 74 75 /** from cfg username, after daemonize setup performed */ 76 uid_t cfg_uid = (uid_t)-1; 77 /** from cfg username, after daemonize setup performed */ 78 gid_t cfg_gid = (gid_t)-1; 79 /** for debug allow small timeout values for fast rollovers */ 80 int autr_permit_small_holddown = 0; 81 /** size (in bytes) of stream wait buffers max */ 82 size_t stream_wait_max = 4 * 1024 * 1024; 83 size_t http2_query_buffer_max = 4 * 1024 * 1024; 84 size_t http2_response_buffer_max = 4 * 1024 * 1024; 85 86 /** global config during parsing */ 87 struct config_parser_state* cfg_parser = 0; 88 89 /** init ports possible for use */ 90 static void init_outgoing_availports(int* array, int num); 91 92 /** init cookie with random data */ 93 static void init_cookie_secret(uint8_t* cookie_secret, size_t cookie_secret_len); 94 95 struct config_file* 96 config_create(void) 97 { 98 struct config_file* cfg; 99 cfg = (struct config_file*)calloc(1, sizeof(struct config_file)); 100 if(!cfg) 101 return NULL; 102 /* the defaults if no config is present */ 103 cfg->verbosity = 1; 104 cfg->stat_interval = 0; 105 cfg->stat_cumulative = 0; 106 cfg->stat_extended = 0; 107 cfg->stat_inhibit_zero = 1; 108 cfg->num_threads = 1; 109 cfg->port = UNBOUND_DNS_PORT; 110 cfg->do_ip4 = 1; 111 cfg->do_ip6 = 1; 112 cfg->do_udp = 1; 113 cfg->do_tcp = 1; 114 cfg->tcp_reuse_timeout = 60 * 1000; /* 60s in milisecs */ 115 cfg->max_reuse_tcp_queries = 200; 116 cfg->tcp_upstream = 0; 117 cfg->udp_upstream_without_downstream = 0; 118 cfg->tcp_mss = 0; 119 cfg->outgoing_tcp_mss = 0; 120 cfg->tcp_idle_timeout = 30 * 1000; /* 30s in millisecs */ 121 cfg->tcp_auth_query_timeout = 3 * 1000; /* 3s in millisecs */ 122 cfg->do_tcp_keepalive = 0; 123 cfg->tcp_keepalive_timeout = 120 * 1000; /* 120s in millisecs */ 124 cfg->sock_queue_timeout = 0; /* do not check timeout */ 125 cfg->ssl_service_key = NULL; 126 cfg->ssl_service_pem = NULL; 127 cfg->ssl_port = UNBOUND_DNS_OVER_TLS_PORT; 128 cfg->ssl_upstream = 0; 129 cfg->tls_cert_bundle = NULL; 130 cfg->tls_win_cert = 0; 131 cfg->tls_use_sni = 1; 132 cfg->https_port = UNBOUND_DNS_OVER_HTTPS_PORT; 133 if(!(cfg->http_endpoint = strdup("/dns-query"))) goto error_exit; 134 cfg->http_max_streams = 100; 135 cfg->http_query_buffer_size = 4*1024*1024; 136 cfg->http_response_buffer_size = 4*1024*1024; 137 cfg->http_nodelay = 1; 138 cfg->quic_port = UNBOUND_DNS_OVER_QUIC_PORT; 139 cfg->quic_size = 8*1024*1024; 140 cfg->use_syslog = 1; 141 cfg->log_identity = NULL; /* changed later with argv[0] */ 142 cfg->log_time_ascii = 0; 143 cfg->log_time_iso = 0; 144 cfg->log_queries = 0; 145 cfg->log_replies = 0; 146 cfg->log_tag_queryreply = 0; 147 cfg->log_local_actions = 0; 148 cfg->log_servfail = 0; 149 cfg->log_destaddr = 0; 150 #ifndef USE_WINSOCK 151 # ifdef USE_MINI_EVENT 152 /* select max 1024 sockets */ 153 cfg->outgoing_num_ports = 960; 154 cfg->num_queries_per_thread = 512; 155 # else 156 /* libevent can use many sockets */ 157 cfg->outgoing_num_ports = 4096; 158 cfg->num_queries_per_thread = 1024; 159 # endif 160 cfg->outgoing_num_tcp = 10; 161 cfg->incoming_num_tcp = 10; 162 #else 163 cfg->outgoing_num_ports = 48; /* windows is limited in num fds */ 164 cfg->num_queries_per_thread = 24; 165 cfg->outgoing_num_tcp = 2; /* leaves 64-52=12 for: 4if,1stop,thread4 */ 166 cfg->incoming_num_tcp = 2; 167 #endif 168 cfg->stream_wait_size = 4 * 1024 * 1024; 169 cfg->edns_buffer_size = 1232; /* from DNS flagday recommendation */ 170 cfg->msg_buffer_size = 65552; /* 64 k + a small margin */ 171 cfg->msg_cache_size = 4 * 1024 * 1024; 172 cfg->msg_cache_slabs = 4; 173 cfg->jostle_time = 200; 174 cfg->rrset_cache_size = 4 * 1024 * 1024; 175 cfg->rrset_cache_slabs = 4; 176 cfg->host_ttl = 900; 177 cfg->bogus_ttl = 60; 178 cfg->min_ttl = 0; 179 cfg->max_ttl = 3600 * 24; 180 cfg->max_negative_ttl = 3600; 181 cfg->min_negative_ttl = 0; 182 cfg->prefetch = 0; 183 cfg->prefetch_key = 0; 184 cfg->deny_any = 0; 185 cfg->infra_cache_slabs = 4; 186 cfg->infra_cache_numhosts = 10000; 187 cfg->infra_cache_min_rtt = 50; 188 cfg->infra_cache_max_rtt = 120000; 189 cfg->infra_keep_probing = 0; 190 cfg->delay_close = 0; 191 cfg->udp_connect = 1; 192 if(!(cfg->outgoing_avail_ports = (int*)calloc(65536, sizeof(int)))) 193 goto error_exit; 194 init_outgoing_availports(cfg->outgoing_avail_ports, 65536); 195 if(!(cfg->username = strdup(UB_USERNAME))) goto error_exit; 196 #ifdef HAVE_CHROOT 197 if(!(cfg->chrootdir = strdup(CHROOT_DIR))) goto error_exit; 198 #endif 199 if(!(cfg->directory = strdup(RUN_DIR))) goto error_exit; 200 if(!(cfg->logfile = strdup(""))) goto error_exit; 201 if(!(cfg->pidfile = strdup(PIDFILE))) goto error_exit; 202 if(!(cfg->target_fetch_policy = strdup("3 2 1 0 0"))) goto error_exit; 203 cfg->fast_server_permil = 0; 204 cfg->fast_server_num = 3; 205 cfg->donotqueryaddrs = NULL; 206 cfg->donotquery_localhost = 1; 207 cfg->root_hints = NULL; 208 cfg->use_systemd = 0; 209 cfg->do_daemonize = 1; 210 cfg->if_automatic = 0; 211 cfg->if_automatic_ports = NULL; 212 cfg->so_rcvbuf = 0; 213 cfg->so_sndbuf = 0; 214 cfg->so_reuseport = REUSEPORT_DEFAULT; 215 cfg->ip_transparent = 0; 216 cfg->ip_freebind = 0; 217 cfg->ip_dscp = 0; 218 cfg->num_ifs = 0; 219 cfg->ifs = NULL; 220 cfg->num_out_ifs = 0; 221 cfg->out_ifs = NULL; 222 cfg->stubs = NULL; 223 cfg->forwards = NULL; 224 cfg->auths = NULL; 225 #ifdef CLIENT_SUBNET 226 cfg->client_subnet = NULL; 227 cfg->client_subnet_zone = NULL; 228 cfg->client_subnet_opcode = LDNS_EDNS_CLIENT_SUBNET; 229 cfg->client_subnet_always_forward = 0; 230 cfg->max_client_subnet_ipv4 = 24; 231 cfg->max_client_subnet_ipv6 = 56; 232 cfg->min_client_subnet_ipv4 = 0; 233 cfg->min_client_subnet_ipv6 = 0; 234 cfg->max_ecs_tree_size_ipv4 = 100; 235 cfg->max_ecs_tree_size_ipv6 = 100; 236 #endif 237 cfg->views = NULL; 238 cfg->acls = NULL; 239 cfg->tcp_connection_limits = NULL; 240 cfg->harden_short_bufsize = 1; 241 cfg->harden_large_queries = 0; 242 cfg->harden_glue = 1; 243 cfg->harden_unverified_glue = 0; 244 cfg->harden_dnssec_stripped = 1; 245 cfg->harden_below_nxdomain = 1; 246 cfg->harden_referral_path = 0; 247 cfg->harden_algo_downgrade = 0; 248 cfg->harden_unknown_additional = 0; 249 cfg->use_caps_bits_for_id = 0; 250 cfg->caps_whitelist = NULL; 251 cfg->private_address = NULL; 252 cfg->private_domain = NULL; 253 cfg->unwanted_threshold = 0; 254 cfg->hide_identity = 0; 255 cfg->hide_version = 0; 256 cfg->hide_trustanchor = 0; 257 cfg->hide_http_user_agent = 0; 258 cfg->identity = NULL; 259 cfg->version = NULL; 260 cfg->http_user_agent = NULL; 261 cfg->nsid_cfg_str = NULL; 262 cfg->nsid = NULL; 263 cfg->nsid_len = 0; 264 cfg->auto_trust_anchor_file_list = NULL; 265 cfg->trust_anchor_file_list = NULL; 266 cfg->trust_anchor_list = NULL; 267 cfg->trusted_keys_file_list = NULL; 268 cfg->trust_anchor_signaling = 1; 269 cfg->root_key_sentinel = 1; 270 cfg->domain_insecure = NULL; 271 cfg->val_date_override = 0; 272 cfg->val_sig_skew_min = 3600; /* at least daylight savings trouble */ 273 cfg->val_sig_skew_max = 86400; /* at most timezone settings trouble */ 274 cfg->val_max_restart = 5; 275 cfg->val_clean_additional = 1; 276 cfg->val_log_level = 0; 277 cfg->val_log_squelch = 0; 278 cfg->val_permissive_mode = 0; 279 cfg->aggressive_nsec = 1; 280 cfg->ignore_cd = 0; 281 cfg->disable_edns_do = 0; 282 cfg->serve_expired = 0; 283 cfg->serve_expired_ttl = 0; 284 cfg->serve_expired_ttl_reset = 0; 285 cfg->serve_expired_reply_ttl = 30; 286 cfg->serve_expired_client_timeout = 0; 287 cfg->ede_serve_expired = 0; 288 cfg->serve_original_ttl = 0; 289 cfg->zonemd_permissive_mode = 0; 290 cfg->add_holddown = 30*24*3600; 291 cfg->del_holddown = 30*24*3600; 292 cfg->keep_missing = 366*24*3600; /* one year plus a little leeway */ 293 cfg->permit_small_holddown = 0; 294 cfg->key_cache_size = 4 * 1024 * 1024; 295 cfg->key_cache_slabs = 4; 296 cfg->neg_cache_size = 1 * 1024 * 1024; 297 cfg->local_zones = NULL; 298 cfg->local_zones_nodefault = NULL; 299 #ifdef USE_IPSET 300 cfg->local_zones_ipset = NULL; 301 #endif 302 cfg->local_zones_disable_default = 0; 303 cfg->local_data = NULL; 304 cfg->local_zone_overrides = NULL; 305 cfg->unblock_lan_zones = 0; 306 cfg->insecure_lan_zones = 0; 307 cfg->python_script = NULL; 308 cfg->dynlib_file = NULL; 309 cfg->remote_control_enable = 0; 310 cfg->control_ifs.first = NULL; 311 cfg->control_ifs.last = NULL; 312 cfg->control_port = UNBOUND_CONTROL_PORT; 313 cfg->control_use_cert = 1; 314 cfg->minimal_responses = 1; 315 cfg->rrset_roundrobin = 1; 316 cfg->unknown_server_time_limit = 376; 317 cfg->discard_timeout = 1900; /* msec */ 318 cfg->wait_limit = 1000; 319 cfg->wait_limit_cookie = 10000; 320 cfg->wait_limit_netblock = NULL; 321 cfg->wait_limit_cookie_netblock = NULL; 322 cfg->max_udp_size = 1232; /* value taken from edns_buffer_size */ 323 if(!(cfg->server_key_file = strdup(RUN_DIR"/unbound_server.key"))) 324 goto error_exit; 325 if(!(cfg->server_cert_file = strdup(RUN_DIR"/unbound_server.pem"))) 326 goto error_exit; 327 if(!(cfg->control_key_file = strdup(RUN_DIR"/unbound_control.key"))) 328 goto error_exit; 329 if(!(cfg->control_cert_file = strdup(RUN_DIR"/unbound_control.pem"))) 330 goto error_exit; 331 332 #ifdef CLIENT_SUBNET 333 if(!(cfg->module_conf = strdup("subnetcache validator iterator"))) goto error_exit; 334 #else 335 if(!(cfg->module_conf = strdup("validator iterator"))) goto error_exit; 336 #endif 337 if(!(cfg->val_nsec3_key_iterations = 338 strdup("1024 150 2048 150 4096 150"))) goto error_exit; 339 #if defined(DNSTAP_SOCKET_PATH) 340 if(!(cfg->dnstap_socket_path = strdup(DNSTAP_SOCKET_PATH))) 341 goto error_exit; 342 #endif 343 cfg->dnstap_bidirectional = 1; 344 cfg->dnstap_tls = 1; 345 cfg->disable_dnssec_lame_check = 0; 346 cfg->ip_ratelimit_cookie = 0; 347 cfg->ip_ratelimit = 0; 348 cfg->ratelimit = 0; 349 cfg->ip_ratelimit_slabs = 4; 350 cfg->ratelimit_slabs = 4; 351 cfg->ip_ratelimit_size = 4*1024*1024; 352 cfg->ratelimit_size = 4*1024*1024; 353 cfg->ratelimit_for_domain = NULL; 354 cfg->ratelimit_below_domain = NULL; 355 cfg->ip_ratelimit_factor = 10; 356 cfg->ratelimit_factor = 10; 357 cfg->ip_ratelimit_backoff = 0; 358 cfg->ratelimit_backoff = 0; 359 cfg->outbound_msg_retry = 5; 360 cfg->max_sent_count = 32; 361 cfg->max_query_restarts = 11; 362 cfg->qname_minimisation = 1; 363 cfg->qname_minimisation_strict = 0; 364 cfg->shm_enable = 0; 365 cfg->shm_key = 11777; 366 cfg->edns_client_strings = NULL; 367 cfg->edns_client_string_opcode = 65001; 368 cfg->dnscrypt = 0; 369 cfg->dnscrypt_port = 0; 370 cfg->dnscrypt_provider = NULL; 371 cfg->dnscrypt_provider_cert = NULL; 372 cfg->dnscrypt_provider_cert_rotated = NULL; 373 cfg->dnscrypt_secret_key = NULL; 374 cfg->dnscrypt_shared_secret_cache_size = 4*1024*1024; 375 cfg->dnscrypt_shared_secret_cache_slabs = 4; 376 cfg->dnscrypt_nonce_cache_size = 4*1024*1024; 377 cfg->dnscrypt_nonce_cache_slabs = 4; 378 cfg->pad_responses = 1; 379 cfg->pad_responses_block_size = 468; /* from RFC8467 */ 380 cfg->pad_queries = 1; 381 cfg->pad_queries_block_size = 128; /* from RFC8467 */ 382 #ifdef USE_IPSECMOD 383 cfg->ipsecmod_enabled = 1; 384 cfg->ipsecmod_ignore_bogus = 0; 385 cfg->ipsecmod_hook = NULL; 386 cfg->ipsecmod_max_ttl = 3600; 387 cfg->ipsecmod_whitelist = NULL; 388 cfg->ipsecmod_strict = 0; 389 #endif 390 cfg->do_answer_cookie = 0; 391 memset(cfg->cookie_secret, 0, sizeof(cfg->cookie_secret)); 392 cfg->cookie_secret_len = 16; 393 init_cookie_secret(cfg->cookie_secret, cfg->cookie_secret_len); 394 cfg->cookie_secret_file = NULL; 395 #ifdef USE_CACHEDB 396 if(!(cfg->cachedb_backend = strdup("testframe"))) goto error_exit; 397 if(!(cfg->cachedb_secret = strdup("default"))) goto error_exit; 398 cfg->cachedb_no_store = 0; 399 cfg->cachedb_check_when_serve_expired = 1; 400 #ifdef USE_REDIS 401 if(!(cfg->redis_server_host = strdup("127.0.0.1"))) goto error_exit; 402 cfg->redis_server_path = NULL; 403 cfg->redis_server_password = NULL; 404 cfg->redis_timeout = 100; 405 cfg->redis_command_timeout = 0; 406 cfg->redis_connect_timeout = 0; 407 cfg->redis_server_port = 6379; 408 cfg->redis_expire_records = 0; 409 cfg->redis_logical_db = 0; 410 #endif /* USE_REDIS */ 411 #endif /* USE_CACHEDB */ 412 #ifdef USE_IPSET 413 cfg->ipset_name_v4 = NULL; 414 cfg->ipset_name_v6 = NULL; 415 #endif 416 cfg->ede = 0; 417 cfg->iter_scrub_ns = 20; 418 cfg->iter_scrub_cname = 11; 419 cfg->max_global_quota = 128; 420 return cfg; 421 error_exit: 422 config_delete(cfg); 423 return NULL; 424 } 425 426 struct config_file* config_create_forlib(void) 427 { 428 struct config_file* cfg = config_create(); 429 if(!cfg) return NULL; 430 /* modifications for library use, less verbose, less memory */ 431 free(cfg->chrootdir); 432 cfg->chrootdir = NULL; 433 cfg->verbosity = 0; 434 cfg->outgoing_num_ports = 16; /* in library use, this is 'reasonable' 435 and probably within the ulimit(maxfds) of the user */ 436 cfg->outgoing_num_tcp = 2; 437 cfg->msg_cache_size = 1024*1024; 438 cfg->msg_cache_slabs = 1; 439 cfg->rrset_cache_size = 1024*1024; 440 cfg->rrset_cache_slabs = 1; 441 cfg->infra_cache_slabs = 1; 442 cfg->use_syslog = 0; 443 cfg->key_cache_size = 1024*1024; 444 cfg->key_cache_slabs = 1; 445 cfg->neg_cache_size = 100 * 1024; 446 cfg->donotquery_localhost = 0; /* allow, so that you can ask a 447 forward nameserver running on localhost */ 448 cfg->val_log_level = 2; /* to fill why_bogus with */ 449 cfg->val_log_squelch = 1; 450 cfg->minimal_responses = 0; 451 cfg->harden_short_bufsize = 1; 452 return cfg; 453 } 454 455 /** check that the value passed is >= 0 */ 456 #define IS_NUMBER_OR_ZERO \ 457 if(atoi(val) == 0 && strcmp(val, "0") != 0) return 0 458 /** check that the value passed is > 0 */ 459 #define IS_NONZERO_NUMBER \ 460 if(atoi(val) == 0) return 0 461 /** check that the value passed is not 0 and a power of 2 */ 462 #define IS_POW2_NUMBER \ 463 if(atoi(val) == 0 || !is_pow2((size_t)atoi(val))) return 0 464 /** check that the value passed is yes or no */ 465 #define IS_YES_OR_NO \ 466 if(strcmp(val, "yes") != 0 && strcmp(val, "no") != 0) return 0 467 /** put integer_or_zero into variable */ 468 #define S_NUMBER_OR_ZERO(str, var) if(strcmp(opt, str) == 0) \ 469 { IS_NUMBER_OR_ZERO; cfg->var = atoi(val); } 470 /** put integer_nonzero into variable */ 471 #define S_NUMBER_NONZERO(str, var) if(strcmp(opt, str) == 0) \ 472 { IS_NONZERO_NUMBER; cfg->var = atoi(val); } 473 /** put integer_or_zero into unsigned */ 474 #define S_UNSIGNED_OR_ZERO(str, var) if(strcmp(opt, str) == 0) \ 475 { IS_NUMBER_OR_ZERO; cfg->var = (unsigned)atoi(val); } 476 /** put integer_or_zero into size_t */ 477 #define S_SIZET_OR_ZERO(str, var) if(strcmp(opt, str) == 0) \ 478 { IS_NUMBER_OR_ZERO; cfg->var = (size_t)atoi(val); } 479 /** put integer_nonzero into size_t */ 480 #define S_SIZET_NONZERO(str, var) if(strcmp(opt, str) == 0) \ 481 { IS_NONZERO_NUMBER; cfg->var = (size_t)atoi(val); } 482 /** put yesno into variable */ 483 #define S_YNO(str, var) if(strcmp(opt, str) == 0) \ 484 { IS_YES_OR_NO; cfg->var = (strcmp(val, "yes") == 0); } 485 /** put memsize into variable */ 486 #define S_MEMSIZE(str, var) if(strcmp(opt, str)==0) \ 487 { return cfg_parse_memsize(val, &cfg->var); } 488 /** put pow2 number into variable */ 489 #define S_POW2(str, var) if(strcmp(opt, str)==0) \ 490 { IS_POW2_NUMBER; cfg->var = (size_t)atoi(val); } 491 /** put string into variable */ 492 #define S_STR(str, var) if(strcmp(opt, str)==0) \ 493 { free(cfg->var); return (cfg->var = strdup(val)) != NULL; } 494 /** put string into strlist */ 495 #define S_STRLIST(str, var) if(strcmp(opt, str)==0) \ 496 { return cfg_strlist_insert(&cfg->var, strdup(val)); } 497 /** put string into strlist if not present yet*/ 498 #define S_STRLIST_UNIQ(str, var) if(strcmp(opt, str)==0) \ 499 { if(cfg_strlist_find(cfg->var, val)) { return 0;} \ 500 return cfg_strlist_insert(&cfg->var, strdup(val)); } 501 /** append string to strlist */ 502 #define S_STRLIST_APPEND(str, var) if(strcmp(opt, str)==0) \ 503 { return cfg_strlist_append(&cfg->var, strdup(val)); } 504 505 int config_set_option(struct config_file* cfg, const char* opt, 506 const char* val) 507 { 508 char buf[64]; 509 if(!opt) return 0; 510 if(opt[strlen(opt)-1] != ':' && strlen(opt)+2<sizeof(buf)) { 511 snprintf(buf, sizeof(buf), "%s:", opt); 512 opt = buf; 513 } 514 S_NUMBER_OR_ZERO("verbosity:", verbosity) 515 else if(strcmp(opt, "statistics-interval:") == 0) { 516 if(strcmp(val, "0") == 0 || strcmp(val, "") == 0) 517 cfg->stat_interval = 0; 518 else if(atoi(val) == 0) 519 return 0; 520 else cfg->stat_interval = atoi(val); 521 } else if(strcmp(opt, "num-threads:") == 0) { 522 /* not supported, library must have 1 thread in bgworker */ 523 return 0; 524 } else if(strcmp(opt, "outgoing-port-permit:") == 0) { 525 return cfg_mark_ports(val, 1, 526 cfg->outgoing_avail_ports, 65536); 527 } else if(strcmp(opt, "outgoing-port-avoid:") == 0) { 528 return cfg_mark_ports(val, 0, 529 cfg->outgoing_avail_ports, 65536); 530 } else if(strcmp(opt, "local-zone:") == 0) { 531 return cfg_parse_local_zone(cfg, val); 532 } else if(strcmp(opt, "val-override-date:") == 0) { 533 if(strcmp(val, "") == 0 || strcmp(val, "0") == 0) { 534 cfg->val_date_override = 0; 535 } else if(strlen(val) == 14) { 536 cfg->val_date_override = cfg_convert_timeval(val); 537 return cfg->val_date_override != 0; 538 } else { 539 if(atoi(val) == 0) return 0; 540 cfg->val_date_override = (uint32_t)atoi(val); 541 } 542 } else if(strcmp(opt, "local-data-ptr:") == 0) { 543 char* ptr = cfg_ptr_reverse((char*)opt); 544 return cfg_strlist_insert(&cfg->local_data, ptr); 545 } else if(strcmp(opt, "logfile:") == 0) { 546 cfg->use_syslog = 0; 547 free(cfg->logfile); 548 return (cfg->logfile = strdup(val)) != NULL; 549 } 550 else if(strcmp(opt, "log-time-ascii:") == 0) 551 { IS_YES_OR_NO; cfg->log_time_ascii = (strcmp(val, "yes") == 0); 552 log_set_time_asc(cfg->log_time_ascii); } 553 else if(strcmp(opt, "log-time-iso:") == 0) 554 { IS_YES_OR_NO; cfg->log_time_iso = (strcmp(val, "yes") == 0); 555 log_set_time_iso(cfg->log_time_iso); } 556 else S_SIZET_NONZERO("max-udp-size:", max_udp_size) 557 else S_YNO("use-syslog:", use_syslog) 558 else S_STR("log-identity:", log_identity) 559 else S_YNO("extended-statistics:", stat_extended) 560 else S_YNO("statistics-inhibit-zero:", stat_inhibit_zero) 561 else S_YNO("statistics-cumulative:", stat_cumulative) 562 else S_YNO("shm-enable:", shm_enable) 563 else S_NUMBER_OR_ZERO("shm-key:", shm_key) 564 else S_YNO("do-ip4:", do_ip4) 565 else S_YNO("do-ip6:", do_ip6) 566 else S_YNO("do-udp:", do_udp) 567 else S_YNO("do-tcp:", do_tcp) 568 else S_YNO("prefer-ip4:", prefer_ip4) 569 else S_YNO("prefer-ip6:", prefer_ip6) 570 else S_YNO("tcp-upstream:", tcp_upstream) 571 else S_YNO("udp-upstream-without-downstream:", 572 udp_upstream_without_downstream) 573 else S_NUMBER_NONZERO("tcp-mss:", tcp_mss) 574 else S_NUMBER_NONZERO("outgoing-tcp-mss:", outgoing_tcp_mss) 575 else S_NUMBER_NONZERO("tcp-auth-query-timeout:", tcp_auth_query_timeout) 576 else S_NUMBER_NONZERO("tcp-idle-timeout:", tcp_idle_timeout) 577 else S_NUMBER_NONZERO("max-reuse-tcp-queries:", max_reuse_tcp_queries) 578 else S_NUMBER_NONZERO("tcp-reuse-timeout:", tcp_reuse_timeout) 579 else S_YNO("edns-tcp-keepalive:", do_tcp_keepalive) 580 else S_NUMBER_NONZERO("edns-tcp-keepalive-timeout:", tcp_keepalive_timeout) 581 else S_NUMBER_OR_ZERO("sock-queue-timeout:", sock_queue_timeout) 582 else S_YNO("ssl-upstream:", ssl_upstream) 583 else S_YNO("tls-upstream:", ssl_upstream) 584 else S_STR("ssl-service-key:", ssl_service_key) 585 else S_STR("tls-service-key:", ssl_service_key) 586 else S_STR("ssl-service-pem:", ssl_service_pem) 587 else S_STR("tls-service-pem:", ssl_service_pem) 588 else S_NUMBER_NONZERO("ssl-port:", ssl_port) 589 else S_NUMBER_NONZERO("tls-port:", ssl_port) 590 else S_STR("ssl-cert-bundle:", tls_cert_bundle) 591 else S_STR("tls-cert-bundle:", tls_cert_bundle) 592 else S_YNO("tls-win-cert:", tls_win_cert) 593 else S_YNO("tls-system-cert:", tls_win_cert) 594 else S_STRLIST("additional-ssl-port:", tls_additional_port) 595 else S_STRLIST("additional-tls-port:", tls_additional_port) 596 else S_STRLIST("tls-additional-ports:", tls_additional_port) 597 else S_STRLIST("tls-additional-port:", tls_additional_port) 598 else S_STRLIST_APPEND("tls-session-ticket-keys:", tls_session_ticket_keys) 599 else S_STR("tls-ciphers:", tls_ciphers) 600 else S_STR("tls-ciphersuites:", tls_ciphersuites) 601 else S_YNO("tls-use-sni:", tls_use_sni) 602 else S_NUMBER_NONZERO("https-port:", https_port) 603 else S_STR("http-endpoint:", http_endpoint) 604 else S_NUMBER_NONZERO("http-max-streams:", http_max_streams) 605 else S_MEMSIZE("http-query-buffer-size:", http_query_buffer_size) 606 else S_MEMSIZE("http-response-buffer-size:", http_response_buffer_size) 607 else S_YNO("http-nodelay:", http_nodelay) 608 else S_YNO("http-notls-downstream:", http_notls_downstream) 609 else S_NUMBER_NONZERO("quic-port:", quic_port) 610 else S_MEMSIZE("quic-size:", quic_size) 611 else S_YNO("interface-automatic:", if_automatic) 612 else S_STR("interface-automatic-ports:", if_automatic_ports) 613 else S_YNO("use-systemd:", use_systemd) 614 else S_YNO("do-daemonize:", do_daemonize) 615 else S_NUMBER_NONZERO("port:", port) 616 else S_NUMBER_NONZERO("outgoing-range:", outgoing_num_ports) 617 else S_SIZET_OR_ZERO("outgoing-num-tcp:", outgoing_num_tcp) 618 else S_SIZET_OR_ZERO("incoming-num-tcp:", incoming_num_tcp) 619 else S_MEMSIZE("stream-wait-size:", stream_wait_size) 620 else S_SIZET_NONZERO("edns-buffer-size:", edns_buffer_size) 621 else S_SIZET_NONZERO("msg-buffer-size:", msg_buffer_size) 622 else S_MEMSIZE("msg-cache-size:", msg_cache_size) 623 else S_POW2("msg-cache-slabs:", msg_cache_slabs) 624 else S_SIZET_NONZERO("num-queries-per-thread:",num_queries_per_thread) 625 else S_SIZET_OR_ZERO("jostle-timeout:", jostle_time) 626 else S_MEMSIZE("so-rcvbuf:", so_rcvbuf) 627 else S_MEMSIZE("so-sndbuf:", so_sndbuf) 628 else S_YNO("so-reuseport:", so_reuseport) 629 else S_YNO("ip-transparent:", ip_transparent) 630 else S_YNO("ip-freebind:", ip_freebind) 631 else S_NUMBER_OR_ZERO("ip-dscp:", ip_dscp) 632 else S_MEMSIZE("rrset-cache-size:", rrset_cache_size) 633 else S_POW2("rrset-cache-slabs:", rrset_cache_slabs) 634 else S_YNO("prefetch:", prefetch) 635 else S_YNO("prefetch-key:", prefetch_key) 636 else S_YNO("deny-any:", deny_any) 637 else if(strcmp(opt, "cache-max-ttl:") == 0) 638 { IS_NUMBER_OR_ZERO; cfg->max_ttl = atoi(val); MAX_TTL=(time_t)cfg->max_ttl;} 639 else if(strcmp(opt, "cache-max-negative-ttl:") == 0) 640 { IS_NUMBER_OR_ZERO; cfg->max_negative_ttl = atoi(val); MAX_NEG_TTL=(time_t)cfg->max_negative_ttl;} 641 else if(strcmp(opt, "cache-min-negative-ttl:") == 0) 642 { IS_NUMBER_OR_ZERO; cfg->min_negative_ttl = atoi(val); MIN_NEG_TTL=(time_t)cfg->min_negative_ttl;} 643 else if(strcmp(opt, "cache-min-ttl:") == 0) 644 { IS_NUMBER_OR_ZERO; cfg->min_ttl = atoi(val); MIN_TTL=(time_t)cfg->min_ttl;} 645 else if(strcmp(opt, "infra-cache-min-rtt:") == 0) { 646 IS_NUMBER_OR_ZERO; cfg->infra_cache_min_rtt = atoi(val); 647 RTT_MIN_TIMEOUT=cfg->infra_cache_min_rtt; 648 } 649 else if(strcmp(opt, "infra-cache-max-rtt:") == 0) { 650 IS_NUMBER_OR_ZERO; cfg->infra_cache_max_rtt = atoi(val); 651 RTT_MAX_TIMEOUT=cfg->infra_cache_max_rtt; 652 USEFUL_SERVER_TOP_TIMEOUT = RTT_MAX_TIMEOUT; 653 BLACKLIST_PENALTY = USEFUL_SERVER_TOP_TIMEOUT*4; 654 } 655 else S_YNO("infra-keep-probing:", infra_keep_probing) 656 else S_NUMBER_OR_ZERO("infra-host-ttl:", host_ttl) 657 else S_POW2("infra-cache-slabs:", infra_cache_slabs) 658 else S_SIZET_NONZERO("infra-cache-numhosts:", infra_cache_numhosts) 659 else S_NUMBER_OR_ZERO("delay-close:", delay_close) 660 else S_YNO("udp-connect:", udp_connect) 661 else S_STR("chroot:", chrootdir) 662 else S_STR("username:", username) 663 else S_STR("directory:", directory) 664 else S_STR("pidfile:", pidfile) 665 else S_YNO("hide-identity:", hide_identity) 666 else S_YNO("hide-version:", hide_version) 667 else S_YNO("hide-trustanchor:", hide_trustanchor) 668 else S_YNO("hide-http-user-agent:", hide_http_user_agent) 669 else S_STR("identity:", identity) 670 else S_STR("version:", version) 671 else S_STR("http-user-agent:", http_user_agent) 672 else if(strcmp(opt, "nsid:") == 0) { 673 free(cfg->nsid_cfg_str); 674 if (!(cfg->nsid_cfg_str = strdup(val))) 675 return 0; 676 /* Empty string is just validly unsetting nsid */ 677 if (*val == 0) { 678 free(cfg->nsid); 679 cfg->nsid = NULL; 680 cfg->nsid_len = 0; 681 return 1; 682 } 683 cfg->nsid = cfg_parse_nsid(val, &cfg->nsid_len); 684 return cfg->nsid != NULL; 685 } 686 else S_STRLIST("root-hints:", root_hints) 687 else S_STR("target-fetch-policy:", target_fetch_policy) 688 else S_YNO("harden-glue:", harden_glue) 689 else S_YNO("harden-unverified-glue:", harden_unverified_glue) 690 else S_YNO("harden-short-bufsize:", harden_short_bufsize) 691 else S_YNO("harden-large-queries:", harden_large_queries) 692 else S_YNO("harden-dnssec-stripped:", harden_dnssec_stripped) 693 else S_YNO("harden-below-nxdomain:", harden_below_nxdomain) 694 else S_YNO("harden-referral-path:", harden_referral_path) 695 else S_YNO("harden-algo-downgrade:", harden_algo_downgrade) 696 else S_YNO("harden-unknown-additional:", harden_unknown_additional) 697 else S_YNO("use-caps-for-id:", use_caps_bits_for_id) 698 else S_STRLIST("caps-whitelist:", caps_whitelist) 699 else S_SIZET_OR_ZERO("unwanted-reply-threshold:", unwanted_threshold) 700 else S_STRLIST("private-address:", private_address) 701 else S_STRLIST("private-domain:", private_domain) 702 else S_YNO("do-not-query-localhost:", donotquery_localhost) 703 else S_STRLIST("do-not-query-address:", donotqueryaddrs) 704 else S_STRLIST("auto-trust-anchor-file:", auto_trust_anchor_file_list) 705 else S_STRLIST("trust-anchor-file:", trust_anchor_file_list) 706 else S_STRLIST("trust-anchor:", trust_anchor_list) 707 else S_STRLIST("trusted-keys-file:", trusted_keys_file_list) 708 else S_YNO("trust-anchor-signaling:", trust_anchor_signaling) 709 else S_YNO("root-key-sentinel:", root_key_sentinel) 710 else S_STRLIST("domain-insecure:", domain_insecure) 711 else S_NUMBER_OR_ZERO("val-bogus-ttl:", bogus_ttl) 712 else S_YNO("val-clean-additional:", val_clean_additional) 713 else S_NUMBER_OR_ZERO("val-log-level:", val_log_level) 714 else S_YNO("val-log-squelch:", val_log_squelch) 715 else S_YNO("log-queries:", log_queries) 716 else S_YNO("log-replies:", log_replies) 717 else S_YNO("log-tag-queryreply:", log_tag_queryreply) 718 else S_YNO("log-local-actions:", log_local_actions) 719 else S_YNO("log-servfail:", log_servfail) 720 else S_YNO("log-destaddr:", log_destaddr) 721 else S_YNO("val-permissive-mode:", val_permissive_mode) 722 else S_YNO("aggressive-nsec:", aggressive_nsec) 723 else S_YNO("ignore-cd-flag:", ignore_cd) 724 else S_YNO("disable-edns-do:", disable_edns_do) 725 else if(strcmp(opt, "serve-expired:") == 0) 726 { IS_YES_OR_NO; cfg->serve_expired = (strcmp(val, "yes") == 0); 727 SERVE_EXPIRED = cfg->serve_expired; } 728 else if(strcmp(opt, "serve-expired-ttl:") == 0) 729 { IS_NUMBER_OR_ZERO; cfg->serve_expired_ttl = atoi(val); SERVE_EXPIRED_TTL=(time_t)cfg->serve_expired_ttl;} 730 else if(strcmp(opt, "serve-expired-ttl-reset:") == 0) 731 { IS_YES_OR_NO; cfg->serve_expired_ttl_reset = (strcmp(val, "yes") == 0); 732 SERVE_EXPIRED_TTL_RESET = cfg->serve_expired_ttl_reset; } 733 else if(strcmp(opt, "serve-expired-reply-ttl:") == 0) 734 { IS_NUMBER_OR_ZERO; cfg->serve_expired_reply_ttl = atoi(val); SERVE_EXPIRED_REPLY_TTL=(time_t)cfg->serve_expired_reply_ttl;} 735 else S_NUMBER_OR_ZERO("serve-expired-client-timeout:", serve_expired_client_timeout) 736 else S_YNO("ede:", ede) 737 else S_YNO("ede-serve-expired:", ede_serve_expired) 738 else S_NUMBER_OR_ZERO("iter-scrub-ns:", iter_scrub_ns) 739 else S_NUMBER_OR_ZERO("iter-scrub-cname:", iter_scrub_cname) 740 else S_NUMBER_OR_ZERO("max-global-quota:", max_global_quota) 741 else S_YNO("serve-original-ttl:", serve_original_ttl) 742 else S_STR("val-nsec3-keysize-iterations:", val_nsec3_key_iterations) 743 else S_YNO("zonemd-permissive-mode:", zonemd_permissive_mode) 744 else S_UNSIGNED_OR_ZERO("add-holddown:", add_holddown) 745 else S_UNSIGNED_OR_ZERO("del-holddown:", del_holddown) 746 else S_UNSIGNED_OR_ZERO("keep-missing:", keep_missing) 747 else if(strcmp(opt, "permit-small-holddown:") == 0) 748 { IS_YES_OR_NO; cfg->permit_small_holddown = (strcmp(val, "yes") == 0); 749 autr_permit_small_holddown = cfg->permit_small_holddown; } 750 else S_MEMSIZE("key-cache-size:", key_cache_size) 751 else S_POW2("key-cache-slabs:", key_cache_slabs) 752 else S_MEMSIZE("neg-cache-size:", neg_cache_size) 753 else S_YNO("minimal-responses:", minimal_responses) 754 else S_YNO("rrset-roundrobin:", rrset_roundrobin) 755 else S_NUMBER_OR_ZERO("unknown-server-time-limit:", unknown_server_time_limit) 756 else S_NUMBER_OR_ZERO("discard-timeout:", discard_timeout) 757 else S_NUMBER_OR_ZERO("wait-limit:", wait_limit) 758 else S_NUMBER_OR_ZERO("wait-limit-cookie:", wait_limit_cookie) 759 else S_STRLIST("local-data:", local_data) 760 else S_YNO("unblock-lan-zones:", unblock_lan_zones) 761 else S_YNO("insecure-lan-zones:", insecure_lan_zones) 762 else S_YNO("control-enable:", remote_control_enable) 763 else S_STRLIST_APPEND("control-interface:", control_ifs) 764 else S_NUMBER_NONZERO("control-port:", control_port) 765 else S_STR("server-key-file:", server_key_file) 766 else S_STR("server-cert-file:", server_cert_file) 767 else S_STR("control-key-file:", control_key_file) 768 else S_STR("control-cert-file:", control_cert_file) 769 else S_STR("module-config:", module_conf) 770 else S_STRLIST("python-script:", python_script) 771 else S_STRLIST("dynlib-file:", dynlib_file) 772 else S_YNO("disable-dnssec-lame-check:", disable_dnssec_lame_check) 773 #ifdef CLIENT_SUBNET 774 /* Can't set max subnet prefix here, since that value is used when 775 * generating the address tree. */ 776 /* No client-subnet-always-forward here, module registration depends on 777 * this option. */ 778 #endif 779 #ifdef USE_DNSTAP 780 else S_YNO("dnstap-enable:", dnstap) 781 else S_YNO("dnstap-bidirectional:", dnstap_bidirectional) 782 else S_STR("dnstap-socket-path:", dnstap_socket_path) 783 else S_STR("dnstap-ip:", dnstap_ip) 784 else S_YNO("dnstap-tls:", dnstap_tls) 785 else S_STR("dnstap-tls-server-name:", dnstap_tls_server_name) 786 else S_STR("dnstap-tls-cert-bundle:", dnstap_tls_cert_bundle) 787 else S_STR("dnstap-tls-client-key-file:", dnstap_tls_client_key_file) 788 else S_STR("dnstap-tls-client-cert-file:", 789 dnstap_tls_client_cert_file) 790 else S_YNO("dnstap-send-identity:", dnstap_send_identity) 791 else S_YNO("dnstap-send-version:", dnstap_send_version) 792 else S_STR("dnstap-identity:", dnstap_identity) 793 else S_STR("dnstap-version:", dnstap_version) 794 else S_NUMBER_OR_ZERO("dnstap-sample-rate:", dnstap_sample_rate) 795 else S_YNO("dnstap-log-resolver-query-messages:", 796 dnstap_log_resolver_query_messages) 797 else S_YNO("dnstap-log-resolver-response-messages:", 798 dnstap_log_resolver_response_messages) 799 else S_YNO("dnstap-log-client-query-messages:", 800 dnstap_log_client_query_messages) 801 else S_YNO("dnstap-log-client-response-messages:", 802 dnstap_log_client_response_messages) 803 else S_YNO("dnstap-log-forwarder-query-messages:", 804 dnstap_log_forwarder_query_messages) 805 else S_YNO("dnstap-log-forwarder-response-messages:", 806 dnstap_log_forwarder_response_messages) 807 #endif 808 #ifdef USE_DNSCRYPT 809 else S_YNO("dnscrypt-enable:", dnscrypt) 810 else S_NUMBER_NONZERO("dnscrypt-port:", dnscrypt_port) 811 else S_STR("dnscrypt-provider:", dnscrypt_provider) 812 else S_STRLIST_UNIQ("dnscrypt-provider-cert:", dnscrypt_provider_cert) 813 else S_STRLIST("dnscrypt-provider-cert-rotated:", dnscrypt_provider_cert_rotated) 814 else S_STRLIST_UNIQ("dnscrypt-secret-key:", dnscrypt_secret_key) 815 else S_MEMSIZE("dnscrypt-shared-secret-cache-size:", 816 dnscrypt_shared_secret_cache_size) 817 else S_POW2("dnscrypt-shared-secret-cache-slabs:", 818 dnscrypt_shared_secret_cache_slabs) 819 else S_MEMSIZE("dnscrypt-nonce-cache-size:", 820 dnscrypt_nonce_cache_size) 821 else S_POW2("dnscrypt-nonce-cache-slabs:", 822 dnscrypt_nonce_cache_slabs) 823 #endif 824 else if(strcmp(opt, "ip-ratelimit-cookie:") == 0) { 825 IS_NUMBER_OR_ZERO; cfg->ip_ratelimit_cookie = atoi(val); 826 infra_ip_ratelimit_cookie=cfg->ip_ratelimit_cookie; 827 } 828 else if(strcmp(opt, "ip-ratelimit:") == 0) { 829 IS_NUMBER_OR_ZERO; cfg->ip_ratelimit = atoi(val); 830 infra_ip_ratelimit=cfg->ip_ratelimit; 831 } 832 else if(strcmp(opt, "ratelimit:") == 0) { 833 IS_NUMBER_OR_ZERO; cfg->ratelimit = atoi(val); 834 infra_dp_ratelimit=cfg->ratelimit; 835 } 836 else S_MEMSIZE("ip-ratelimit-size:", ip_ratelimit_size) 837 else S_MEMSIZE("ratelimit-size:", ratelimit_size) 838 else S_POW2("ip-ratelimit-slabs:", ip_ratelimit_slabs) 839 else S_POW2("ratelimit-slabs:", ratelimit_slabs) 840 else S_NUMBER_OR_ZERO("ip-ratelimit-factor:", ip_ratelimit_factor) 841 else S_NUMBER_OR_ZERO("ratelimit-factor:", ratelimit_factor) 842 else S_YNO("ip-ratelimit-backoff:", ip_ratelimit_backoff) 843 else S_YNO("ratelimit-backoff:", ratelimit_backoff) 844 else S_NUMBER_NONZERO("outbound-msg-retry:", outbound_msg_retry) 845 else S_NUMBER_NONZERO("max-sent-count:", max_sent_count) 846 else S_NUMBER_NONZERO("max-query-restarts:", max_query_restarts) 847 else S_SIZET_NONZERO("fast-server-num:", fast_server_num) 848 else S_NUMBER_OR_ZERO("fast-server-permil:", fast_server_permil) 849 else S_YNO("qname-minimisation:", qname_minimisation) 850 else S_YNO("qname-minimisation-strict:", qname_minimisation_strict) 851 else S_YNO("pad-responses:", pad_responses) 852 else S_SIZET_NONZERO("pad-responses-block-size:", pad_responses_block_size) 853 else S_YNO("pad-queries:", pad_queries) 854 else S_SIZET_NONZERO("pad-queries-block-size:", pad_queries_block_size) 855 else S_STRLIST("proxy-protocol-port:", proxy_protocol_port) 856 #ifdef USE_IPSECMOD 857 else S_YNO("ipsecmod-enabled:", ipsecmod_enabled) 858 else S_YNO("ipsecmod-ignore-bogus:", ipsecmod_ignore_bogus) 859 else if(strcmp(opt, "ipsecmod-max-ttl:") == 0) 860 { IS_NUMBER_OR_ZERO; cfg->ipsecmod_max_ttl = atoi(val); } 861 else S_YNO("ipsecmod-strict:", ipsecmod_strict) 862 #endif 863 else S_YNO("answer-cookie:", do_answer_cookie) 864 else S_STR("cookie-secret-file:", cookie_secret_file) 865 #ifdef USE_CACHEDB 866 else S_YNO("cachedb-no-store:", cachedb_no_store) 867 else S_YNO("cachedb-check-when-serve-expired:", cachedb_check_when_serve_expired) 868 #endif /* USE_CACHEDB */ 869 else if(strcmp(opt, "define-tag:") ==0) { 870 return config_add_tag(cfg, val); 871 /* val_sig_skew_min, max and val_max_restart are copied into val_env 872 * during init so this does not update val_env with set_option */ 873 } else if(strcmp(opt, "val-sig-skew-min:") == 0) 874 { IS_NUMBER_OR_ZERO; cfg->val_sig_skew_min = (int32_t)atoi(val); } 875 else if(strcmp(opt, "val-sig-skew-max:") == 0) 876 { IS_NUMBER_OR_ZERO; cfg->val_sig_skew_max = (int32_t)atoi(val); } 877 else if(strcmp(opt, "val-max-restart:") == 0) 878 { IS_NUMBER_OR_ZERO; cfg->val_max_restart = (int32_t)atoi(val); } 879 else if (strcmp(opt, "outgoing-interface:") == 0) { 880 char* d = strdup(val); 881 char** oi = 882 (char**)reallocarray(NULL, (size_t)cfg->num_out_ifs+1, sizeof(char*)); 883 if(!d || !oi) { free(d); free(oi); return -1; } 884 if(cfg->out_ifs && cfg->num_out_ifs) { 885 memmove(oi, cfg->out_ifs, cfg->num_out_ifs*sizeof(char*)); 886 free(cfg->out_ifs); 887 } 888 oi[cfg->num_out_ifs++] = d; 889 cfg->out_ifs = oi; 890 } else { 891 /* unknown or unsupported (from the set_option interface): 892 * interface, outgoing-interface, access-control, 893 * stub-zone, name, stub-addr, stub-host, stub-prime 894 * forward-first, stub-first, forward-ssl-upstream, 895 * stub-ssl-upstream, forward-zone, auth-zone 896 * name, forward-addr, forward-host, 897 * ratelimit-for-domain, ratelimit-below-domain, 898 * local-zone-tag, access-control-view, interface-*, 899 * send-client-subnet, client-subnet-always-forward, 900 * max-client-subnet-ipv4, max-client-subnet-ipv6, 901 * min-client-subnet-ipv4, min-client-subnet-ipv6, 902 * max-ecs-tree-size-ipv4, max-ecs-tree-size-ipv6, ipsecmod_hook, 903 * ipsecmod_whitelist. */ 904 return 0; 905 } 906 return 1; 907 } 908 909 void config_print_func(char* line, void* arg) 910 { 911 FILE* f = (FILE*)arg; 912 (void)fprintf(f, "%s\n", line); 913 } 914 915 /** collate func arg */ 916 struct config_collate_arg { 917 /** list of result items */ 918 struct config_strlist_head list; 919 /** if a malloc error occurred, 0 is OK */ 920 int status; 921 }; 922 923 void config_collate_func(char* line, void* arg) 924 { 925 struct config_collate_arg* m = (struct config_collate_arg*)arg; 926 if(m->status) 927 return; 928 if(!cfg_strlist_append(&m->list, strdup(line))) 929 m->status = 1; 930 } 931 932 int config_get_option_list(struct config_file* cfg, const char* opt, 933 struct config_strlist** list) 934 { 935 struct config_collate_arg m; 936 memset(&m, 0, sizeof(m)); 937 *list = NULL; 938 if(!config_get_option(cfg, opt, config_collate_func, &m)) 939 return 1; 940 if(m.status) { 941 config_delstrlist(m.list.first); 942 return 2; 943 } 944 *list = m.list.first; 945 return 0; 946 } 947 948 int 949 config_get_option_collate(struct config_file* cfg, const char* opt, char** str) 950 { 951 struct config_strlist* list = NULL; 952 int r; 953 *str = NULL; 954 if((r = config_get_option_list(cfg, opt, &list)) != 0) 955 return r; 956 *str = config_collate_cat(list); 957 config_delstrlist(list); 958 if(!*str) return 2; 959 return 0; 960 } 961 962 char* 963 config_collate_cat(struct config_strlist* list) 964 { 965 size_t total = 0, left; 966 struct config_strlist* s; 967 char *r, *w; 968 if(!list) /* no elements */ 969 return strdup(""); 970 if(list->next == NULL) /* one element , no newline at end. */ 971 return strdup(list->str); 972 /* count total length */ 973 for(s=list; s; s=s->next) 974 total += strlen(s->str) + 1; /* len + newline */ 975 left = total+1; /* one extra for nul at end */ 976 r = malloc(left); 977 if(!r) 978 return NULL; 979 w = r; 980 for(s=list; s; s=s->next) { 981 size_t this = strlen(s->str); 982 if(this+2 > left) { /* sanity check */ 983 free(r); 984 return NULL; 985 } 986 snprintf(w, left, "%s\n", s->str); 987 this = strlen(w); 988 w += this; 989 left -= this; 990 } 991 return r; 992 } 993 994 /** compare and print decimal option */ 995 #define O_DEC(opt, str, var) if(strcmp(opt, str)==0) \ 996 {snprintf(buf, len, "%d", (int)cfg->var); \ 997 func(buf, arg);} 998 /** compare and print unsigned option */ 999 #define O_UNS(opt, str, var) if(strcmp(opt, str)==0) \ 1000 {snprintf(buf, len, "%u", (unsigned)cfg->var); \ 1001 func(buf, arg);} 1002 /** compare and print yesno option */ 1003 #define O_YNO(opt, str, var) if(strcmp(opt, str)==0) \ 1004 {func(cfg->var?"yes":"no", arg);} 1005 /** compare and print string option */ 1006 #define O_STR(opt, str, var) if(strcmp(opt, str)==0) \ 1007 {func(cfg->var?cfg->var:"", arg);} 1008 /** compare and print array option */ 1009 #define O_IFC(opt, str, num, arr) if(strcmp(opt, str)==0) \ 1010 {int i; for(i=0; i<cfg->num; i++) func(cfg->arr[i], arg);} 1011 /** compare and print memorysize option */ 1012 #define O_MEM(opt, str, var) if(strcmp(opt, str)==0) { \ 1013 if(cfg->var > 1024*1024*1024) { \ 1014 size_t f=cfg->var/(size_t)1000000, b=cfg->var%(size_t)1000000; \ 1015 snprintf(buf, len, "%u%6.6u", (unsigned)f, (unsigned)b); \ 1016 } else snprintf(buf, len, "%u", (unsigned)cfg->var); \ 1017 func(buf, arg);} 1018 /** compare and print list option */ 1019 #define O_LST(opt, name, lst) if(strcmp(opt, name)==0) { \ 1020 struct config_strlist* p = cfg->lst; \ 1021 for(p = cfg->lst; p; p = p->next) \ 1022 func(p->str, arg); \ 1023 } 1024 /** compare and print list option */ 1025 #define O_LS2(opt, name, lst) if(strcmp(opt, name)==0) { \ 1026 struct config_str2list* p = cfg->lst; \ 1027 for(p = cfg->lst; p; p = p->next) { \ 1028 snprintf(buf, len, "%s %s", p->str, p->str2); \ 1029 func(buf, arg); \ 1030 } \ 1031 } 1032 /** compare and print list option */ 1033 #define O_LS3(opt, name, lst) if(strcmp(opt, name)==0) { \ 1034 struct config_str3list* p = cfg->lst; \ 1035 for(p = cfg->lst; p; p = p->next) { \ 1036 snprintf(buf, len, "%s %s %s", p->str, p->str2, p->str3); \ 1037 func(buf, arg); \ 1038 } \ 1039 } 1040 /** compare and print taglist option */ 1041 #define O_LTG(opt, name, lst) if(strcmp(opt, name)==0) { \ 1042 char* tmpstr = NULL; \ 1043 struct config_strbytelist *p = cfg->lst; \ 1044 for(p = cfg->lst; p; p = p->next) {\ 1045 tmpstr = config_taglist2str(cfg, p->str2, p->str2len); \ 1046 if(tmpstr) {\ 1047 snprintf(buf, len, "%s %s", p->str, tmpstr); \ 1048 func(buf, arg); \ 1049 free(tmpstr); \ 1050 } \ 1051 } \ 1052 } 1053 1054 int 1055 config_get_option(struct config_file* cfg, const char* opt, 1056 void (*func)(char*,void*), void* arg) 1057 { 1058 char buf[1024], nopt[64]; 1059 size_t len = sizeof(buf); 1060 if(!opt) return 0; 1061 if(opt && opt[strlen(opt)-1] == ':' && strlen(opt)<sizeof(nopt)) { 1062 memmove(nopt, opt, strlen(opt)); 1063 nopt[strlen(opt)-1] = 0; 1064 opt = nopt; 1065 } 1066 fptr_ok(fptr_whitelist_print_func(func)); 1067 O_DEC(opt, "verbosity", verbosity) 1068 else O_DEC(opt, "statistics-interval", stat_interval) 1069 else O_YNO(opt, "statistics-cumulative", stat_cumulative) 1070 else O_YNO(opt, "extended-statistics", stat_extended) 1071 else O_YNO(opt, "statistics-inhibit-zero", stat_inhibit_zero) 1072 else O_YNO(opt, "shm-enable", shm_enable) 1073 else O_DEC(opt, "shm-key", shm_key) 1074 else O_YNO(opt, "use-syslog", use_syslog) 1075 else O_STR(opt, "log-identity", log_identity) 1076 else O_YNO(opt, "log-time-ascii", log_time_ascii) 1077 else O_YNO(opt, "log-time-iso", log_time_iso) 1078 else O_DEC(opt, "num-threads", num_threads) 1079 else O_IFC(opt, "interface", num_ifs, ifs) 1080 else O_IFC(opt, "outgoing-interface", num_out_ifs, out_ifs) 1081 else O_YNO(opt, "interface-automatic", if_automatic) 1082 else O_STR(opt, "interface-automatic-ports", if_automatic_ports) 1083 else O_DEC(opt, "port", port) 1084 else O_DEC(opt, "outgoing-range", outgoing_num_ports) 1085 else O_DEC(opt, "outgoing-num-tcp", outgoing_num_tcp) 1086 else O_DEC(opt, "incoming-num-tcp", incoming_num_tcp) 1087 else O_MEM(opt, "stream-wait-size", stream_wait_size) 1088 else O_DEC(opt, "edns-buffer-size", edns_buffer_size) 1089 else O_DEC(opt, "msg-buffer-size", msg_buffer_size) 1090 else O_MEM(opt, "msg-cache-size", msg_cache_size) 1091 else O_DEC(opt, "msg-cache-slabs", msg_cache_slabs) 1092 else O_DEC(opt, "num-queries-per-thread", num_queries_per_thread) 1093 else O_UNS(opt, "jostle-timeout", jostle_time) 1094 else O_MEM(opt, "so-rcvbuf", so_rcvbuf) 1095 else O_MEM(opt, "so-sndbuf", so_sndbuf) 1096 else O_YNO(opt, "so-reuseport", so_reuseport) 1097 else O_YNO(opt, "ip-transparent", ip_transparent) 1098 else O_YNO(opt, "ip-freebind", ip_freebind) 1099 else O_DEC(opt, "ip-dscp", ip_dscp) 1100 else O_MEM(opt, "rrset-cache-size", rrset_cache_size) 1101 else O_DEC(opt, "rrset-cache-slabs", rrset_cache_slabs) 1102 else O_YNO(opt, "prefetch-key", prefetch_key) 1103 else O_YNO(opt, "prefetch", prefetch) 1104 else O_YNO(opt, "deny-any", deny_any) 1105 else O_DEC(opt, "cache-max-ttl", max_ttl) 1106 else O_DEC(opt, "cache-max-negative-ttl", max_negative_ttl) 1107 else O_DEC(opt, "cache-min-negative-ttl", min_negative_ttl) 1108 else O_DEC(opt, "cache-min-ttl", min_ttl) 1109 else O_DEC(opt, "infra-host-ttl", host_ttl) 1110 else O_DEC(opt, "infra-cache-slabs", infra_cache_slabs) 1111 else O_DEC(opt, "infra-cache-min-rtt", infra_cache_min_rtt) 1112 else O_UNS(opt, "infra-cache-max-rtt", infra_cache_max_rtt) 1113 else O_YNO(opt, "infra-keep-probing", infra_keep_probing) 1114 else O_MEM(opt, "infra-cache-numhosts", infra_cache_numhosts) 1115 else O_UNS(opt, "delay-close", delay_close) 1116 else O_YNO(opt, "udp-connect", udp_connect) 1117 else O_YNO(opt, "do-ip4", do_ip4) 1118 else O_YNO(opt, "do-ip6", do_ip6) 1119 else O_YNO(opt, "do-udp", do_udp) 1120 else O_YNO(opt, "do-tcp", do_tcp) 1121 else O_YNO(opt, "prefer-ip4", prefer_ip4) 1122 else O_YNO(opt, "prefer-ip6", prefer_ip6) 1123 else O_YNO(opt, "tcp-upstream", tcp_upstream) 1124 else O_YNO(opt, "udp-upstream-without-downstream", udp_upstream_without_downstream) 1125 else O_DEC(opt, "tcp-mss", tcp_mss) 1126 else O_DEC(opt, "outgoing-tcp-mss", outgoing_tcp_mss) 1127 else O_DEC(opt, "tcp-auth-query-timeout", tcp_auth_query_timeout) 1128 else O_DEC(opt, "tcp-idle-timeout", tcp_idle_timeout) 1129 else O_DEC(opt, "max-reuse-tcp-queries", max_reuse_tcp_queries) 1130 else O_DEC(opt, "tcp-reuse-timeout", tcp_reuse_timeout) 1131 else O_YNO(opt, "edns-tcp-keepalive", do_tcp_keepalive) 1132 else O_DEC(opt, "edns-tcp-keepalive-timeout", tcp_keepalive_timeout) 1133 else O_DEC(opt, "sock-queue-timeout", sock_queue_timeout) 1134 else O_YNO(opt, "ssl-upstream", ssl_upstream) 1135 else O_YNO(opt, "tls-upstream", ssl_upstream) 1136 else O_STR(opt, "ssl-service-key", ssl_service_key) 1137 else O_STR(opt, "tls-service-key", ssl_service_key) 1138 else O_STR(opt, "ssl-service-pem", ssl_service_pem) 1139 else O_STR(opt, "tls-service-pem", ssl_service_pem) 1140 else O_DEC(opt, "ssl-port", ssl_port) 1141 else O_DEC(opt, "tls-port", ssl_port) 1142 else O_STR(opt, "ssl-cert-bundle", tls_cert_bundle) 1143 else O_STR(opt, "tls-cert-bundle", tls_cert_bundle) 1144 else O_YNO(opt, "tls-win-cert", tls_win_cert) 1145 else O_YNO(opt, "tls-system-cert", tls_win_cert) 1146 else O_LST(opt, "additional-ssl-port", tls_additional_port) 1147 else O_LST(opt, "additional-tls-port", tls_additional_port) 1148 else O_LST(opt, "tls-additional-ports", tls_additional_port) 1149 else O_LST(opt, "tls-additional-port", tls_additional_port) 1150 else O_LST(opt, "tls-session-ticket-keys", tls_session_ticket_keys.first) 1151 else O_STR(opt, "tls-ciphers", tls_ciphers) 1152 else O_STR(opt, "tls-ciphersuites", tls_ciphersuites) 1153 else O_YNO(opt, "tls-use-sni", tls_use_sni) 1154 else O_DEC(opt, "https-port", https_port) 1155 else O_STR(opt, "http-endpoint", http_endpoint) 1156 else O_UNS(opt, "http-max-streams", http_max_streams) 1157 else O_MEM(opt, "http-query-buffer-size", http_query_buffer_size) 1158 else O_MEM(opt, "http-response-buffer-size", http_response_buffer_size) 1159 else O_YNO(opt, "http-nodelay", http_nodelay) 1160 else O_YNO(opt, "http-notls-downstream", http_notls_downstream) 1161 else O_DEC(opt, "quic-port", quic_port) 1162 else O_MEM(opt, "quic-size", quic_size) 1163 else O_YNO(opt, "use-systemd", use_systemd) 1164 else O_YNO(opt, "do-daemonize", do_daemonize) 1165 else O_STR(opt, "chroot", chrootdir) 1166 else O_STR(opt, "username", username) 1167 else O_STR(opt, "directory", directory) 1168 else O_STR(opt, "logfile", logfile) 1169 else O_YNO(opt, "log-queries", log_queries) 1170 else O_YNO(opt, "log-replies", log_replies) 1171 else O_YNO(opt, "log-tag-queryreply", log_tag_queryreply) 1172 else O_YNO(opt, "log-local-actions", log_local_actions) 1173 else O_YNO(opt, "log-servfail", log_servfail) 1174 else O_YNO(opt, "log-destaddr", log_destaddr) 1175 else O_STR(opt, "pidfile", pidfile) 1176 else O_YNO(opt, "hide-identity", hide_identity) 1177 else O_YNO(opt, "hide-version", hide_version) 1178 else O_YNO(opt, "hide-trustanchor", hide_trustanchor) 1179 else O_YNO(opt, "hide-http-user-agent", hide_http_user_agent) 1180 else O_STR(opt, "identity", identity) 1181 else O_STR(opt, "version", version) 1182 else O_STR(opt, "http-user-agent", http_user_agent) 1183 else O_STR(opt, "nsid", nsid_cfg_str) 1184 else O_STR(opt, "target-fetch-policy", target_fetch_policy) 1185 else O_YNO(opt, "harden-short-bufsize", harden_short_bufsize) 1186 else O_YNO(opt, "harden-large-queries", harden_large_queries) 1187 else O_YNO(opt, "harden-glue", harden_glue) 1188 else O_YNO(opt, "harden-unverified-glue", harden_unverified_glue) 1189 else O_YNO(opt, "harden-dnssec-stripped", harden_dnssec_stripped) 1190 else O_YNO(opt, "harden-below-nxdomain", harden_below_nxdomain) 1191 else O_YNO(opt, "harden-referral-path", harden_referral_path) 1192 else O_YNO(opt, "harden-algo-downgrade", harden_algo_downgrade) 1193 else O_YNO(opt, "harden-unknown-additional", harden_unknown_additional) 1194 else O_YNO(opt, "use-caps-for-id", use_caps_bits_for_id) 1195 else O_LST(opt, "caps-whitelist", caps_whitelist) 1196 else O_DEC(opt, "unwanted-reply-threshold", unwanted_threshold) 1197 else O_YNO(opt, "do-not-query-localhost", donotquery_localhost) 1198 else O_STR(opt, "module-config", module_conf) 1199 else O_DEC(opt, "val-bogus-ttl", bogus_ttl) 1200 else O_YNO(opt, "val-clean-additional", val_clean_additional) 1201 else O_DEC(opt, "val-log-level", val_log_level) 1202 else O_YNO(opt, "val-permissive-mode", val_permissive_mode) 1203 else O_YNO(opt, "aggressive-nsec", aggressive_nsec) 1204 else O_YNO(opt, "ignore-cd-flag", ignore_cd) 1205 else O_YNO(opt, "disable-edns-do", disable_edns_do) 1206 else O_YNO(opt, "serve-expired", serve_expired) 1207 else O_DEC(opt, "serve-expired-ttl", serve_expired_ttl) 1208 else O_YNO(opt, "serve-expired-ttl-reset", serve_expired_ttl_reset) 1209 else O_DEC(opt, "serve-expired-reply-ttl", serve_expired_reply_ttl) 1210 else O_DEC(opt, "serve-expired-client-timeout", serve_expired_client_timeout) 1211 else O_YNO(opt, "ede", ede) 1212 else O_YNO(opt, "ede-serve-expired", ede_serve_expired) 1213 else O_DEC(opt, "iter-scrub-ns", iter_scrub_ns) 1214 else O_DEC(opt, "iter-scrub-cname", iter_scrub_cname) 1215 else O_DEC(opt, "max-global-quota", max_global_quota) 1216 else O_YNO(opt, "serve-original-ttl", serve_original_ttl) 1217 else O_STR(opt, "val-nsec3-keysize-iterations",val_nsec3_key_iterations) 1218 else O_YNO(opt, "zonemd-permissive-mode", zonemd_permissive_mode) 1219 else O_UNS(opt, "add-holddown", add_holddown) 1220 else O_UNS(opt, "del-holddown", del_holddown) 1221 else O_UNS(opt, "keep-missing", keep_missing) 1222 else O_YNO(opt, "permit-small-holddown", permit_small_holddown) 1223 else O_MEM(opt, "key-cache-size", key_cache_size) 1224 else O_DEC(opt, "key-cache-slabs", key_cache_slabs) 1225 else O_MEM(opt, "neg-cache-size", neg_cache_size) 1226 else O_YNO(opt, "control-enable", remote_control_enable) 1227 else O_DEC(opt, "control-port", control_port) 1228 else O_STR(opt, "server-key-file", server_key_file) 1229 else O_STR(opt, "server-cert-file", server_cert_file) 1230 else O_STR(opt, "control-key-file", control_key_file) 1231 else O_STR(opt, "control-cert-file", control_cert_file) 1232 else O_LST(opt, "root-hints", root_hints) 1233 else O_LS2(opt, "access-control", acls) 1234 else O_LS2(opt, "tcp-connection-limit", tcp_connection_limits) 1235 else O_LST(opt, "do-not-query-address", donotqueryaddrs) 1236 else O_LST(opt, "private-address", private_address) 1237 else O_LST(opt, "private-domain", private_domain) 1238 else O_LST(opt, "auto-trust-anchor-file", auto_trust_anchor_file_list) 1239 else O_LST(opt, "trust-anchor-file", trust_anchor_file_list) 1240 else O_LST(opt, "trust-anchor", trust_anchor_list) 1241 else O_LST(opt, "trusted-keys-file", trusted_keys_file_list) 1242 else O_YNO(opt, "trust-anchor-signaling", trust_anchor_signaling) 1243 else O_YNO(opt, "root-key-sentinel", root_key_sentinel) 1244 else O_LST(opt, "control-interface", control_ifs.first) 1245 else O_LST(opt, "domain-insecure", domain_insecure) 1246 else O_UNS(opt, "val-override-date", val_date_override) 1247 else O_YNO(opt, "minimal-responses", minimal_responses) 1248 else O_YNO(opt, "rrset-roundrobin", rrset_roundrobin) 1249 else O_DEC(opt, "unknown-server-time-limit", unknown_server_time_limit) 1250 else O_DEC(opt, "discard-timeout", discard_timeout) 1251 else O_DEC(opt, "wait-limit", wait_limit) 1252 else O_DEC(opt, "wait-limit-cookie", wait_limit_cookie) 1253 else O_LS2(opt, "wait-limit-netblock", wait_limit_netblock) 1254 else O_LS2(opt, "wait-limit-cookie-netblock", wait_limit_cookie_netblock) 1255 #ifdef CLIENT_SUBNET 1256 else O_LST(opt, "send-client-subnet", client_subnet) 1257 else O_LST(opt, "client-subnet-zone", client_subnet_zone) 1258 else O_DEC(opt, "max-client-subnet-ipv4", max_client_subnet_ipv4) 1259 else O_DEC(opt, "max-client-subnet-ipv6", max_client_subnet_ipv6) 1260 else O_DEC(opt, "min-client-subnet-ipv4", min_client_subnet_ipv4) 1261 else O_DEC(opt, "min-client-subnet-ipv6", min_client_subnet_ipv6) 1262 else O_DEC(opt, "max-ecs-tree-size-ipv4", max_ecs_tree_size_ipv4) 1263 else O_DEC(opt, "max-ecs-tree-size-ipv6", max_ecs_tree_size_ipv6) 1264 else O_YNO(opt, "client-subnet-always-forward:", 1265 client_subnet_always_forward) 1266 #endif 1267 #ifdef USE_DNSTAP 1268 else O_YNO(opt, "dnstap-enable", dnstap) 1269 else O_YNO(opt, "dnstap-bidirectional", dnstap_bidirectional) 1270 else O_STR(opt, "dnstap-socket-path", dnstap_socket_path) 1271 else O_STR(opt, "dnstap-ip", dnstap_ip) 1272 else O_YNO(opt, "dnstap-tls", dnstap_tls) 1273 else O_STR(opt, "dnstap-tls-server-name", dnstap_tls_server_name) 1274 else O_STR(opt, "dnstap-tls-cert-bundle", dnstap_tls_cert_bundle) 1275 else O_STR(opt, "dnstap-tls-client-key-file", 1276 dnstap_tls_client_key_file) 1277 else O_STR(opt, "dnstap-tls-client-cert-file", 1278 dnstap_tls_client_cert_file) 1279 else O_YNO(opt, "dnstap-send-identity", dnstap_send_identity) 1280 else O_YNO(opt, "dnstap-send-version", dnstap_send_version) 1281 else O_STR(opt, "dnstap-identity", dnstap_identity) 1282 else O_STR(opt, "dnstap-version", dnstap_version) 1283 else O_UNS(opt, "dnstap-sample-rate", dnstap_sample_rate) 1284 else O_YNO(opt, "dnstap-log-resolver-query-messages", 1285 dnstap_log_resolver_query_messages) 1286 else O_YNO(opt, "dnstap-log-resolver-response-messages", 1287 dnstap_log_resolver_response_messages) 1288 else O_YNO(opt, "dnstap-log-client-query-messages", 1289 dnstap_log_client_query_messages) 1290 else O_YNO(opt, "dnstap-log-client-response-messages", 1291 dnstap_log_client_response_messages) 1292 else O_YNO(opt, "dnstap-log-forwarder-query-messages", 1293 dnstap_log_forwarder_query_messages) 1294 else O_YNO(opt, "dnstap-log-forwarder-response-messages", 1295 dnstap_log_forwarder_response_messages) 1296 #endif 1297 #ifdef USE_DNSCRYPT 1298 else O_YNO(opt, "dnscrypt-enable", dnscrypt) 1299 else O_DEC(opt, "dnscrypt-port", dnscrypt_port) 1300 else O_STR(opt, "dnscrypt-provider", dnscrypt_provider) 1301 else O_LST(opt, "dnscrypt-provider-cert", dnscrypt_provider_cert) 1302 else O_LST(opt, "dnscrypt-provider-cert-rotated", dnscrypt_provider_cert_rotated) 1303 else O_LST(opt, "dnscrypt-secret-key", dnscrypt_secret_key) 1304 else O_MEM(opt, "dnscrypt-shared-secret-cache-size", 1305 dnscrypt_shared_secret_cache_size) 1306 else O_DEC(opt, "dnscrypt-shared-secret-cache-slabs", 1307 dnscrypt_shared_secret_cache_slabs) 1308 else O_MEM(opt, "dnscrypt-nonce-cache-size", 1309 dnscrypt_nonce_cache_size) 1310 else O_DEC(opt, "dnscrypt-nonce-cache-slabs", 1311 dnscrypt_nonce_cache_slabs) 1312 #endif 1313 else O_YNO(opt, "unblock-lan-zones", unblock_lan_zones) 1314 else O_YNO(opt, "insecure-lan-zones", insecure_lan_zones) 1315 else O_DEC(opt, "max-udp-size", max_udp_size) 1316 else O_LST(opt, "python-script", python_script) 1317 else O_LST(opt, "dynlib-file", dynlib_file) 1318 else O_YNO(opt, "disable-dnssec-lame-check", disable_dnssec_lame_check) 1319 else O_DEC(opt, "ip-ratelimit-cookie", ip_ratelimit_cookie) 1320 else O_DEC(opt, "ip-ratelimit", ip_ratelimit) 1321 else O_DEC(opt, "ratelimit", ratelimit) 1322 else O_MEM(opt, "ip-ratelimit-size", ip_ratelimit_size) 1323 else O_MEM(opt, "ratelimit-size", ratelimit_size) 1324 else O_DEC(opt, "ip-ratelimit-slabs", ip_ratelimit_slabs) 1325 else O_DEC(opt, "ratelimit-slabs", ratelimit_slabs) 1326 else O_LS2(opt, "ratelimit-for-domain", ratelimit_for_domain) 1327 else O_LS2(opt, "ratelimit-below-domain", ratelimit_below_domain) 1328 else O_DEC(opt, "ip-ratelimit-factor", ip_ratelimit_factor) 1329 else O_DEC(opt, "ratelimit-factor", ratelimit_factor) 1330 else O_YNO(opt, "ip-ratelimit-backoff", ip_ratelimit_backoff) 1331 else O_YNO(opt, "ratelimit-backoff", ratelimit_backoff) 1332 else O_UNS(opt, "outbound-msg-retry", outbound_msg_retry) 1333 else O_UNS(opt, "max-sent-count", max_sent_count) 1334 else O_UNS(opt, "max-query-restarts", max_query_restarts) 1335 else O_DEC(opt, "fast-server-num", fast_server_num) 1336 else O_DEC(opt, "fast-server-permil", fast_server_permil) 1337 else O_DEC(opt, "val-sig-skew-min", val_sig_skew_min) 1338 else O_DEC(opt, "val-sig-skew-max", val_sig_skew_max) 1339 else O_DEC(opt, "val-max-restart", val_max_restart) 1340 else O_YNO(opt, "qname-minimisation", qname_minimisation) 1341 else O_YNO(opt, "qname-minimisation-strict", qname_minimisation_strict) 1342 else O_IFC(opt, "define-tag", num_tags, tagname) 1343 else O_LTG(opt, "local-zone-tag", local_zone_tags) 1344 else O_LTG(opt, "access-control-tag", acl_tags) 1345 else O_LTG(opt, "response-ip-tag", respip_tags) 1346 else O_LS3(opt, "local-zone-override", local_zone_overrides) 1347 else O_LS3(opt, "access-control-tag-action", acl_tag_actions) 1348 else O_LS3(opt, "access-control-tag-data", acl_tag_datas) 1349 else O_LS2(opt, "access-control-view", acl_view) 1350 else O_LS2(opt, "interface-action", interface_actions) 1351 else O_LTG(opt, "interface-tag", interface_tags) 1352 else O_LS3(opt, "interface-tag-action", interface_tag_actions) 1353 else O_LS3(opt, "interface-tag-data", interface_tag_datas) 1354 else O_LS2(opt, "interface-view", interface_view) 1355 else O_YNO(opt, "pad-responses", pad_responses) 1356 else O_DEC(opt, "pad-responses-block-size", pad_responses_block_size) 1357 else O_YNO(opt, "pad-queries", pad_queries) 1358 else O_DEC(opt, "pad-queries-block-size", pad_queries_block_size) 1359 else O_LS2(opt, "edns-client-strings", edns_client_strings) 1360 else O_LST(opt, "proxy-protocol-port", proxy_protocol_port) 1361 #ifdef USE_IPSECMOD 1362 else O_YNO(opt, "ipsecmod-enabled", ipsecmod_enabled) 1363 else O_YNO(opt, "ipsecmod-ignore-bogus", ipsecmod_ignore_bogus) 1364 else O_STR(opt, "ipsecmod-hook", ipsecmod_hook) 1365 else O_DEC(opt, "ipsecmod-max-ttl", ipsecmod_max_ttl) 1366 else O_LST(opt, "ipsecmod-whitelist", ipsecmod_whitelist) 1367 else O_YNO(opt, "ipsecmod-strict", ipsecmod_strict) 1368 #endif 1369 else O_YNO(opt, "answer-cookie", do_answer_cookie) 1370 else O_STR(opt, "cookie-secret-file", cookie_secret_file) 1371 #ifdef USE_CACHEDB 1372 else O_STR(opt, "backend", cachedb_backend) 1373 else O_STR(opt, "secret-seed", cachedb_secret) 1374 else O_YNO(opt, "cachedb-no-store", cachedb_no_store) 1375 else O_YNO(opt, "cachedb-check-when-serve-expired", cachedb_check_when_serve_expired) 1376 #ifdef USE_REDIS 1377 else O_STR(opt, "redis-server-host", redis_server_host) 1378 else O_DEC(opt, "redis-server-port", redis_server_port) 1379 else O_STR(opt, "redis-server-path", redis_server_path) 1380 else O_STR(opt, "redis-server-password", redis_server_password) 1381 else O_DEC(opt, "redis-timeout", redis_timeout) 1382 else O_DEC(opt, "redis-command-timeout", redis_command_timeout) 1383 else O_DEC(opt, "redis-connect-timeout", redis_connect_timeout) 1384 else O_YNO(opt, "redis-expire-records", redis_expire_records) 1385 else O_DEC(opt, "redis-logical-db", redis_logical_db) 1386 #endif /* USE_REDIS */ 1387 #endif /* USE_CACHEDB */ 1388 #ifdef USE_IPSET 1389 else O_STR(opt, "name-v4", ipset_name_v4) 1390 else O_STR(opt, "name-v6", ipset_name_v6) 1391 #endif 1392 /* not here: 1393 * outgoing-permit, outgoing-avoid - have list of ports 1394 * local-zone - zones and nodefault variables 1395 * local-data - see below 1396 * local-data-ptr - converted to local-data entries 1397 * stub-zone, name, stub-addr, stub-host, stub-prime 1398 * forward-zone, name, forward-addr, forward-host 1399 */ 1400 else return 0; 1401 return 1; 1402 } 1403 1404 /** initialize the global cfg_parser object */ 1405 static void 1406 create_cfg_parser(struct config_file* cfg, char* filename, const char* chroot) 1407 { 1408 static struct config_parser_state st; 1409 cfg_parser = &st; 1410 cfg_parser->filename = filename; 1411 cfg_parser->line = 1; 1412 cfg_parser->errors = 0; 1413 cfg_parser->cfg = cfg; 1414 cfg_parser->chroot = chroot; 1415 cfg_parser->started_toplevel = 0; 1416 init_cfg_parse(); 1417 } 1418 1419 int 1420 config_read(struct config_file* cfg, const char* filename, const char* chroot) 1421 { 1422 FILE *in; 1423 char *fname = (char*)filename; 1424 #ifdef HAVE_GLOB 1425 glob_t g; 1426 size_t i; 1427 int r, flags; 1428 #endif 1429 if(!fname) 1430 return 1; 1431 1432 /* check for wildcards */ 1433 #ifdef HAVE_GLOB 1434 if(!(!strchr(fname, '*') && !strchr(fname, '?') && !strchr(fname, '[') && 1435 !strchr(fname, '{') && !strchr(fname, '~'))) { 1436 verbose(VERB_QUERY, "wildcard found, processing %s", fname); 1437 flags = 0 1438 #ifdef GLOB_ERR 1439 | GLOB_ERR 1440 #endif 1441 #ifdef GLOB_NOSORT 1442 | GLOB_NOSORT 1443 #endif 1444 #ifdef GLOB_BRACE 1445 | GLOB_BRACE 1446 #endif 1447 #ifdef GLOB_TILDE 1448 | GLOB_TILDE 1449 #endif 1450 ; 1451 memset(&g, 0, sizeof(g)); 1452 r = glob(fname, flags, NULL, &g); 1453 if(r) { 1454 /* some error */ 1455 globfree(&g); 1456 if(r == GLOB_NOMATCH) { 1457 verbose(VERB_QUERY, "include: " 1458 "no matches for %s", fname); 1459 return 1; 1460 } else if(r == GLOB_NOSPACE) { 1461 log_err("include: %s: " 1462 "fnametern out of memory", fname); 1463 } else if(r == GLOB_ABORTED) { 1464 log_err("wildcard include: %s: expansion " 1465 "aborted (%s)", fname, strerror(errno)); 1466 } else { 1467 log_err("wildcard include: %s: expansion " 1468 "failed (%s)", fname, strerror(errno)); 1469 } 1470 /* ignore globs that yield no files */ 1471 return 1; 1472 } 1473 /* process files found, if any */ 1474 for(i=0; i<(size_t)g.gl_pathc; i++) { 1475 if(!config_read(cfg, g.gl_pathv[i], chroot)) { 1476 log_err("error reading wildcard " 1477 "include: %s", g.gl_pathv[i]); 1478 globfree(&g); 1479 return 0; 1480 } 1481 } 1482 globfree(&g); 1483 return 1; 1484 } 1485 #endif /* HAVE_GLOB */ 1486 1487 in = fopen(fname, "r"); 1488 if(!in) { 1489 log_err("Could not open %s: %s", fname, strerror(errno)); 1490 return 0; 1491 } 1492 create_cfg_parser(cfg, fname, chroot); 1493 ub_c_in = in; 1494 ub_c_parse(); 1495 fclose(in); 1496 1497 if(!cfg->dnscrypt) cfg->dnscrypt_port = 0; 1498 1499 if(cfg_parser->errors != 0) { 1500 fprintf(stderr, "read %s failed: %d errors in configuration file\n", 1501 fname, cfg_parser->errors); 1502 errno=EINVAL; 1503 return 0; 1504 } 1505 1506 return 1; 1507 } 1508 1509 struct config_stub* cfg_stub_find(struct config_stub*** pp, const char* nm) 1510 { 1511 struct config_stub* p = *(*pp); 1512 while(p) { 1513 if(strcmp(p->name, nm) == 0) 1514 return p; 1515 (*pp) = &p->next; 1516 p = p->next; 1517 } 1518 return NULL; 1519 } 1520 1521 void 1522 config_delstrlist(struct config_strlist* p) 1523 { 1524 struct config_strlist *np; 1525 while(p) { 1526 np = p->next; 1527 free(p->str); 1528 free(p); 1529 p = np; 1530 } 1531 } 1532 1533 void 1534 config_deldblstrlist(struct config_str2list* p) 1535 { 1536 struct config_str2list *np; 1537 while(p) { 1538 np = p->next; 1539 free(p->str); 1540 free(p->str2); 1541 free(p); 1542 p = np; 1543 } 1544 } 1545 1546 void 1547 config_deltrplstrlist(struct config_str3list* p) 1548 { 1549 struct config_str3list *np; 1550 while(p) { 1551 np = p->next; 1552 free(p->str); 1553 free(p->str2); 1554 free(p->str3); 1555 free(p); 1556 p = np; 1557 } 1558 } 1559 1560 void 1561 config_delauth(struct config_auth* p) 1562 { 1563 if(!p) return; 1564 free(p->name); 1565 config_delstrlist(p->masters); 1566 config_delstrlist(p->urls); 1567 config_delstrlist(p->allow_notify); 1568 free(p->zonefile); 1569 free(p->rpz_taglist); 1570 free(p->rpz_action_override); 1571 free(p->rpz_cname); 1572 free(p->rpz_log_name); 1573 free(p); 1574 } 1575 1576 void 1577 config_delauths(struct config_auth* p) 1578 { 1579 struct config_auth* np; 1580 while(p) { 1581 np = p->next; 1582 config_delauth(p); 1583 p = np; 1584 } 1585 } 1586 1587 void 1588 config_delstub(struct config_stub* p) 1589 { 1590 if(!p) return; 1591 free(p->name); 1592 config_delstrlist(p->hosts); 1593 config_delstrlist(p->addrs); 1594 free(p); 1595 } 1596 1597 void 1598 config_delstubs(struct config_stub* p) 1599 { 1600 struct config_stub* np; 1601 while(p) { 1602 np = p->next; 1603 config_delstub(p); 1604 p = np; 1605 } 1606 } 1607 1608 void 1609 config_delview(struct config_view* p) 1610 { 1611 if(!p) return; 1612 free(p->name); 1613 config_deldblstrlist(p->local_zones); 1614 config_delstrlist(p->local_zones_nodefault); 1615 #ifdef USE_IPSET 1616 config_delstrlist(p->local_zones_ipset); 1617 #endif 1618 config_delstrlist(p->local_data); 1619 free(p); 1620 } 1621 1622 void 1623 config_delviews(struct config_view* p) 1624 { 1625 struct config_view* np; 1626 while(p) { 1627 np = p->next; 1628 config_delview(p); 1629 p = np; 1630 } 1631 } 1632 1633 void 1634 config_del_strarray(char** array, int num) 1635 { 1636 int i; 1637 if(!array) 1638 return; 1639 for(i=0; i<num; i++) { 1640 free(array[i]); 1641 } 1642 free(array); 1643 } 1644 1645 void 1646 config_del_strbytelist(struct config_strbytelist* p) 1647 { 1648 struct config_strbytelist* np; 1649 while(p) { 1650 np = p->next; 1651 free(p->str); 1652 free(p->str2); 1653 free(p); 1654 p = np; 1655 } 1656 } 1657 1658 void 1659 config_delete(struct config_file* cfg) 1660 { 1661 if(!cfg) return; 1662 free(cfg->username); 1663 free(cfg->chrootdir); 1664 free(cfg->directory); 1665 free(cfg->logfile); 1666 free(cfg->pidfile); 1667 free(cfg->if_automatic_ports); 1668 free(cfg->target_fetch_policy); 1669 free(cfg->ssl_service_key); 1670 free(cfg->ssl_service_pem); 1671 free(cfg->tls_cert_bundle); 1672 config_delstrlist(cfg->tls_additional_port); 1673 config_delstrlist(cfg->tls_session_ticket_keys.first); 1674 free(cfg->tls_ciphers); 1675 free(cfg->tls_ciphersuites); 1676 free(cfg->http_endpoint); 1677 if(cfg->log_identity) { 1678 log_ident_revert_to_default(); 1679 free(cfg->log_identity); 1680 } 1681 config_del_strarray(cfg->ifs, cfg->num_ifs); 1682 config_del_strarray(cfg->out_ifs, cfg->num_out_ifs); 1683 config_delstubs(cfg->stubs); 1684 config_delstubs(cfg->forwards); 1685 config_delauths(cfg->auths); 1686 config_delviews(cfg->views); 1687 config_delstrlist(cfg->donotqueryaddrs); 1688 config_delstrlist(cfg->root_hints); 1689 #ifdef CLIENT_SUBNET 1690 config_delstrlist(cfg->client_subnet); 1691 config_delstrlist(cfg->client_subnet_zone); 1692 #endif 1693 free(cfg->identity); 1694 free(cfg->version); 1695 free(cfg->http_user_agent); 1696 free(cfg->nsid_cfg_str); 1697 free(cfg->nsid); 1698 free(cfg->module_conf); 1699 free(cfg->outgoing_avail_ports); 1700 config_delstrlist(cfg->caps_whitelist); 1701 config_delstrlist(cfg->private_address); 1702 config_delstrlist(cfg->private_domain); 1703 config_delstrlist(cfg->auto_trust_anchor_file_list); 1704 config_delstrlist(cfg->trust_anchor_file_list); 1705 config_delstrlist(cfg->trusted_keys_file_list); 1706 config_delstrlist(cfg->trust_anchor_list); 1707 config_delstrlist(cfg->domain_insecure); 1708 config_deldblstrlist(cfg->acls); 1709 config_deldblstrlist(cfg->tcp_connection_limits); 1710 free(cfg->val_nsec3_key_iterations); 1711 config_deldblstrlist(cfg->local_zones); 1712 config_delstrlist(cfg->local_zones_nodefault); 1713 #ifdef USE_IPSET 1714 config_delstrlist(cfg->local_zones_ipset); 1715 #endif 1716 config_delstrlist(cfg->local_data); 1717 config_deltrplstrlist(cfg->local_zone_overrides); 1718 config_del_strarray(cfg->tagname, cfg->num_tags); 1719 config_del_strbytelist(cfg->local_zone_tags); 1720 config_del_strbytelist(cfg->respip_tags); 1721 config_deldblstrlist(cfg->acl_view); 1722 config_del_strbytelist(cfg->acl_tags); 1723 config_deltrplstrlist(cfg->acl_tag_actions); 1724 config_deltrplstrlist(cfg->acl_tag_datas); 1725 config_deldblstrlist(cfg->interface_actions); 1726 config_deldblstrlist(cfg->interface_view); 1727 config_del_strbytelist(cfg->interface_tags); 1728 config_deltrplstrlist(cfg->interface_tag_actions); 1729 config_deltrplstrlist(cfg->interface_tag_datas); 1730 config_delstrlist(cfg->control_ifs.first); 1731 config_deldblstrlist(cfg->wait_limit_netblock); 1732 config_deldblstrlist(cfg->wait_limit_cookie_netblock); 1733 free(cfg->server_key_file); 1734 free(cfg->server_cert_file); 1735 free(cfg->control_key_file); 1736 free(cfg->control_cert_file); 1737 free(cfg->nat64_prefix); 1738 free(cfg->dns64_prefix); 1739 config_delstrlist(cfg->dns64_ignore_aaaa); 1740 free(cfg->dnstap_socket_path); 1741 free(cfg->dnstap_ip); 1742 free(cfg->dnstap_tls_server_name); 1743 free(cfg->dnstap_tls_cert_bundle); 1744 free(cfg->dnstap_tls_client_key_file); 1745 free(cfg->dnstap_tls_client_cert_file); 1746 free(cfg->dnstap_identity); 1747 free(cfg->dnstap_version); 1748 config_deldblstrlist(cfg->ratelimit_for_domain); 1749 config_deldblstrlist(cfg->ratelimit_below_domain); 1750 config_delstrlist(cfg->python_script); 1751 config_delstrlist(cfg->dynlib_file); 1752 config_deldblstrlist(cfg->edns_client_strings); 1753 config_delstrlist(cfg->proxy_protocol_port); 1754 #ifdef USE_IPSECMOD 1755 free(cfg->ipsecmod_hook); 1756 config_delstrlist(cfg->ipsecmod_whitelist); 1757 #endif 1758 free(cfg->cookie_secret_file); 1759 #ifdef USE_CACHEDB 1760 free(cfg->cachedb_backend); 1761 free(cfg->cachedb_secret); 1762 #ifdef USE_REDIS 1763 free(cfg->redis_server_host); 1764 free(cfg->redis_server_path); 1765 free(cfg->redis_server_password); 1766 #endif /* USE_REDIS */ 1767 #endif /* USE_CACHEDB */ 1768 #ifdef USE_IPSET 1769 free(cfg->ipset_name_v4); 1770 free(cfg->ipset_name_v6); 1771 #endif 1772 free(cfg); 1773 } 1774 1775 static void 1776 init_cookie_secret(uint8_t* cookie_secret, size_t cookie_secret_len) 1777 { 1778 struct ub_randstate *rand = ub_initstate(NULL); 1779 1780 if (!rand) 1781 fatal_exit("could not init random generator"); 1782 while (cookie_secret_len) { 1783 *cookie_secret++ = (uint8_t)ub_random(rand); 1784 cookie_secret_len--; 1785 } 1786 ub_randfree(rand); 1787 } 1788 1789 static void 1790 init_outgoing_availports(int* a, int num) 1791 { 1792 /* generated with make iana_update */ 1793 const int iana_assigned[] = { 1794 #include "util/iana_ports.inc" 1795 -1 }; /* end marker to put behind trailing comma */ 1796 1797 int i; 1798 /* do not use <1024, that could be trouble with the system, privs */ 1799 for(i=1024; i<num; i++) { 1800 a[i] = i; 1801 } 1802 /* create empty spot at 49152 to keep ephemeral ports available 1803 * to other programs */ 1804 for(i=49152; i<49152+256; i++) 1805 a[i] = 0; 1806 /* pick out all the IANA assigned ports */ 1807 for(i=0; iana_assigned[i]!=-1; i++) { 1808 if(iana_assigned[i] < num) 1809 a[iana_assigned[i]] = 0; 1810 } 1811 } 1812 1813 static int 1814 extract_port_from_str(const char* str, int max_port) { 1815 char* endptr; 1816 long int value; 1817 if (str == NULL || *str == '\0') { 1818 log_err("str: '%s' is invalid", (str?str:"NULL")); 1819 return -1; 1820 } 1821 1822 value = strtol(str, &endptr, 10); 1823 if ((endptr == str) || (*endptr != '\0')) { 1824 log_err("cannot parse port number '%s'", str); 1825 return -1; 1826 } 1827 1828 if (errno == ERANGE) { 1829 log_err("overflow occurred when parsing '%s'", str); 1830 return -1; 1831 } 1832 1833 if (value == 0 && strcmp(str, "0") != 0) { 1834 log_err("cannot parse port number '%s'", str); 1835 return -1; 1836 } 1837 1838 if (value < 0 || value >= max_port) { 1839 log_err(" '%s' is out of bounds [0, %d)", str, max_port); 1840 return -1; 1841 } 1842 1843 return (int)value; 1844 } 1845 1846 int 1847 cfg_mark_ports(const char* str, int allow, int* avail, int num) 1848 { 1849 char* mid = strchr(str, '-'); 1850 #ifdef DISABLE_EXPLICIT_PORT_RANDOMISATION 1851 log_warn("Explicit port randomisation disabled, ignoring " 1852 "outgoing-port-permit and outgoing-port-avoid configuration " 1853 "options"); 1854 #endif 1855 if(!mid) { 1856 int port = extract_port_from_str(str, num); 1857 if (port < 0) { 1858 log_err("Failed to parse the port number"); 1859 return 0; 1860 } 1861 if(port < num) 1862 avail[port] = (allow?port:0); 1863 } else { 1864 char buf[16]; 1865 int i, low; 1866 int high = extract_port_from_str(mid+1, num); 1867 if (high < 0) { 1868 log_err("Failed to parse the port number"); 1869 return 0; 1870 } 1871 1872 if( (int)(mid-str)+1 >= (int)sizeof(buf) ) { 1873 log_err("cannot parse port number '%s'", str); 1874 return 0; 1875 } 1876 1877 if(mid > str) 1878 memcpy(buf, str, (size_t)(mid-str)); 1879 buf[mid-str] = 0; 1880 low = extract_port_from_str(buf, num); 1881 if (low < 0) { 1882 log_err("Failed to parse the port number"); 1883 return 0; 1884 } 1885 1886 if (low > high) { 1887 log_err("Low value is greater than high value"); 1888 return 0; 1889 } 1890 1891 for(i=low; i<=high; i++) { 1892 if(i < num) 1893 avail[i] = (allow?i:0); 1894 } 1895 } 1896 return 1; 1897 } 1898 1899 int 1900 cfg_scan_ports(int* avail, int num) 1901 { 1902 int i; 1903 int count = 0; 1904 for(i=0; i<num; i++) { 1905 if(avail[i]) 1906 count++; 1907 } 1908 return count; 1909 } 1910 1911 int cfg_condense_ports(struct config_file* cfg, int** avail) 1912 { 1913 int num = cfg_scan_ports(cfg->outgoing_avail_ports, 65536); 1914 int i, at = 0; 1915 *avail = NULL; 1916 if(num == 0) 1917 return 0; 1918 *avail = (int*)reallocarray(NULL, (size_t)num, sizeof(int)); 1919 if(!*avail) 1920 return 0; 1921 for(i=0; i<65536; i++) { 1922 if(cfg->outgoing_avail_ports[i]) 1923 (*avail)[at++] = cfg->outgoing_avail_ports[i]; 1924 } 1925 log_assert(at == num); 1926 return num; 1927 } 1928 1929 void cfg_apply_local_port_policy(struct config_file* cfg, int num) { 1930 (void)cfg; 1931 (void)num; 1932 #ifdef USE_LINUX_IP_LOCAL_PORT_RANGE 1933 { 1934 int i = 0; 1935 FILE* range_fd; 1936 if ((range_fd = fopen(LINUX_IP_LOCAL_PORT_RANGE_PATH, "r")) != NULL) { 1937 int min_port = 0; 1938 int max_port = num - 1; 1939 if (fscanf(range_fd, "%d %d", &min_port, &max_port) == 2) { 1940 for(i=0; i<min_port; i++) { 1941 cfg->outgoing_avail_ports[i] = 0; 1942 } 1943 for(i=max_port+1; i<num; i++) { 1944 cfg->outgoing_avail_ports[i] = 0; 1945 } 1946 } else { 1947 log_err("unexpected port range in %s", 1948 LINUX_IP_LOCAL_PORT_RANGE_PATH); 1949 } 1950 fclose(range_fd); 1951 } else { 1952 log_err("failed to read from file: %s (%s)", 1953 LINUX_IP_LOCAL_PORT_RANGE_PATH, 1954 strerror(errno)); 1955 } 1956 } 1957 #endif 1958 } 1959 1960 /** print error with file and line number */ 1961 static void ub_c_error_va_list(const char *fmt, va_list args) 1962 { 1963 cfg_parser->errors++; 1964 fprintf(stderr, "%s:%d: error: ", cfg_parser->filename, 1965 cfg_parser->line); 1966 vfprintf(stderr, fmt, args); 1967 fprintf(stderr, "\n"); 1968 } 1969 1970 /** print error with file and line number */ 1971 void ub_c_error_msg(const char* fmt, ...) 1972 { 1973 va_list args; 1974 va_start(args, fmt); 1975 ub_c_error_va_list(fmt, args); 1976 va_end(args); 1977 } 1978 1979 void ub_c_error(const char *str) 1980 { 1981 cfg_parser->errors++; 1982 if(strcmp(str, "syntax error")==0 && cfg_parser->started_toplevel ==0) 1983 str = "syntax error, is there no section start after an " 1984 "include-toplevel directive perhaps."; 1985 fprintf(stderr, "%s:%d: error: %s\n", cfg_parser->filename, 1986 cfg_parser->line, str); 1987 } 1988 1989 int ub_c_wrap(void) 1990 { 1991 return 1; 1992 } 1993 1994 int cfg_strlist_append(struct config_strlist_head* list, char* item) 1995 { 1996 struct config_strlist *s; 1997 if(!item || !list) { 1998 free(item); 1999 return 0; 2000 } 2001 s = (struct config_strlist*)calloc(1, sizeof(struct config_strlist)); 2002 if(!s) { 2003 free(item); 2004 return 0; 2005 } 2006 s->str = item; 2007 s->next = NULL; 2008 if(list->last) 2009 list->last->next = s; 2010 else 2011 list->first = s; 2012 list->last = s; 2013 return 1; 2014 } 2015 2016 int 2017 cfg_region_strlist_insert(struct regional* region, 2018 struct config_strlist** head, char* item) 2019 { 2020 struct config_strlist *s; 2021 if(!item || !head) 2022 return 0; 2023 s = (struct config_strlist*)regional_alloc_zero(region, 2024 sizeof(struct config_strlist)); 2025 if(!s) 2026 return 0; 2027 s->str = item; 2028 s->next = *head; 2029 *head = s; 2030 return 1; 2031 } 2032 2033 struct config_strlist* 2034 cfg_strlist_find(struct config_strlist* head, const char *item) 2035 { 2036 struct config_strlist *s = head; 2037 if(!head){ 2038 return NULL; 2039 } 2040 while(s) { 2041 if(strcmp(s->str, item) == 0) { 2042 return s; 2043 } 2044 s = s->next; 2045 } 2046 return NULL; 2047 } 2048 2049 int 2050 cfg_strlist_insert(struct config_strlist** head, char* item) 2051 { 2052 struct config_strlist *s; 2053 if(!item || !head) { 2054 free(item); 2055 return 0; 2056 } 2057 s = (struct config_strlist*)calloc(1, sizeof(struct config_strlist)); 2058 if(!s) { 2059 free(item); 2060 return 0; 2061 } 2062 s->str = item; 2063 s->next = *head; 2064 *head = s; 2065 return 1; 2066 } 2067 2068 int 2069 cfg_strlist_append_ex(struct config_strlist** head, char* item) 2070 { 2071 struct config_strlist *s; 2072 if(!item || !head) 2073 return 0; 2074 s = (struct config_strlist*)calloc(1, sizeof(struct config_strlist)); 2075 if(!s) 2076 return 0; 2077 s->str = item; 2078 s->next = NULL; 2079 2080 if (*head==NULL) { 2081 *head = s; 2082 } else { 2083 struct config_strlist *last = *head; 2084 while (last->next!=NULL) { 2085 last = last->next; 2086 } 2087 last->next = s; 2088 } 2089 2090 return 1; 2091 } 2092 2093 int 2094 cfg_str2list_insert(struct config_str2list** head, char* item, char* i2) 2095 { 2096 struct config_str2list *s; 2097 if(!item || !i2 || !head) { 2098 free(item); 2099 free(i2); 2100 return 0; 2101 } 2102 s = (struct config_str2list*)calloc(1, sizeof(struct config_str2list)); 2103 if(!s) { 2104 free(item); 2105 free(i2); 2106 return 0; 2107 } 2108 s->str = item; 2109 s->str2 = i2; 2110 s->next = *head; 2111 *head = s; 2112 return 1; 2113 } 2114 2115 int 2116 cfg_str3list_insert(struct config_str3list** head, char* item, char* i2, 2117 char* i3) 2118 { 2119 struct config_str3list *s; 2120 if(!item || !i2 || !i3 || !head) 2121 return 0; 2122 s = (struct config_str3list*)calloc(1, sizeof(struct config_str3list)); 2123 if(!s) 2124 return 0; 2125 s->str = item; 2126 s->str2 = i2; 2127 s->str3 = i3; 2128 s->next = *head; 2129 *head = s; 2130 return 1; 2131 } 2132 2133 int 2134 cfg_strbytelist_insert(struct config_strbytelist** head, char* item, 2135 uint8_t* i2, size_t i2len) 2136 { 2137 struct config_strbytelist* s; 2138 if(!item || !i2 || !head) 2139 return 0; 2140 s = (struct config_strbytelist*)calloc(1, sizeof(*s)); 2141 if(!s) 2142 return 0; 2143 s->str = item; 2144 s->str2 = i2; 2145 s->str2len = i2len; 2146 s->next = *head; 2147 *head = s; 2148 return 1; 2149 } 2150 2151 time_t 2152 cfg_convert_timeval(const char* str) 2153 { 2154 time_t t; 2155 struct tm tm; 2156 memset(&tm, 0, sizeof(tm)); 2157 if(strlen(str) < 14) 2158 return 0; 2159 if(sscanf(str, "%4d%2d%2d%2d%2d%2d", &tm.tm_year, &tm.tm_mon, 2160 &tm.tm_mday, &tm.tm_hour, &tm.tm_min, &tm.tm_sec) != 6) 2161 return 0; 2162 tm.tm_year -= 1900; 2163 tm.tm_mon--; 2164 /* Check values */ 2165 if (tm.tm_year < 70) return 0; 2166 if (tm.tm_mon < 0 || tm.tm_mon > 11) return 0; 2167 if (tm.tm_mday < 1 || tm.tm_mday > 31) return 0; 2168 if (tm.tm_hour < 0 || tm.tm_hour > 23) return 0; 2169 if (tm.tm_min < 0 || tm.tm_min > 59) return 0; 2170 if (tm.tm_sec < 0 || tm.tm_sec > 59) return 0; 2171 /* call ldns conversion function */ 2172 t = sldns_mktime_from_utc(&tm); 2173 return t; 2174 } 2175 2176 int 2177 cfg_count_numbers(const char* s) 2178 { 2179 /* format ::= (sp num)+ sp */ 2180 /* num ::= [-](0-9)+ */ 2181 /* sp ::= (space|tab)* */ 2182 int num = 0; 2183 while(*s) { 2184 while(*s && isspace((unsigned char)*s)) 2185 s++; 2186 if(!*s) /* end of string */ 2187 break; 2188 if(*s == '-') 2189 s++; 2190 if(!*s) /* only - not allowed */ 2191 return 0; 2192 if(!isdigit((unsigned char)*s)) /* bad character */ 2193 return 0; 2194 while(*s && isdigit((unsigned char)*s)) 2195 s++; 2196 num++; 2197 } 2198 return num; 2199 } 2200 2201 /** all digit number */ 2202 static int isalldigit(const char* str, size_t l) 2203 { 2204 size_t i; 2205 for(i=0; i<l; i++) 2206 if(!isdigit((unsigned char)str[i])) 2207 return 0; 2208 return 1; 2209 } 2210 2211 int 2212 cfg_parse_memsize(const char* str, size_t* res) 2213 { 2214 size_t len; 2215 size_t mult = 1; 2216 if(!str || (len=(size_t)strlen(str)) == 0) { 2217 log_err("not a size: '%s'", str); 2218 return 0; 2219 } 2220 if(isalldigit(str, len)) { 2221 *res = (size_t)atol(str); 2222 return 1; 2223 } 2224 /* check appended num */ 2225 while(len>0 && str[len-1]==' ') 2226 len--; 2227 if(len > 1 && str[len-1] == 'b') 2228 len--; 2229 else if(len > 1 && str[len-1] == 'B') 2230 len--; 2231 2232 if(len > 1 && tolower((unsigned char)str[len-1]) == 'g') 2233 mult = 1024*1024*1024; 2234 else if(len > 1 && tolower((unsigned char)str[len-1]) == 'm') 2235 mult = 1024*1024; 2236 else if(len > 1 && tolower((unsigned char)str[len-1]) == 'k') 2237 mult = 1024; 2238 else if(len > 0 && isdigit((unsigned char)str[len-1])) 2239 mult = 1; 2240 else { 2241 log_err("unknown size specifier: '%s'", str); 2242 return 0; 2243 } 2244 while(len>1 && str[len-2]==' ') 2245 len--; 2246 2247 if(!isalldigit(str, len-1)) { 2248 log_err("unknown size specifier: '%s'", str); 2249 return 0; 2250 } 2251 *res = ((size_t)atol(str)) * mult; 2252 return 1; 2253 } 2254 2255 int 2256 find_tag_id(struct config_file* cfg, const char* tag) 2257 { 2258 int i; 2259 for(i=0; i<cfg->num_tags; i++) { 2260 if(strcmp(cfg->tagname[i], tag) == 0) 2261 return i; 2262 } 2263 return -1; 2264 } 2265 2266 int 2267 config_add_tag(struct config_file* cfg, const char* tag) 2268 { 2269 char** newarray; 2270 char* newtag; 2271 if(find_tag_id(cfg, tag) != -1) 2272 return 1; /* nothing to do */ 2273 newarray = (char**)malloc(sizeof(char*)*(cfg->num_tags+1)); 2274 if(!newarray) 2275 return 0; 2276 newtag = strdup(tag); 2277 if(!newtag) { 2278 free(newarray); 2279 return 0; 2280 } 2281 if(cfg->tagname) { 2282 memcpy(newarray, cfg->tagname, sizeof(char*)*cfg->num_tags); 2283 free(cfg->tagname); 2284 } 2285 newarray[cfg->num_tags++] = newtag; 2286 cfg->tagname = newarray; 2287 return 1; 2288 } 2289 2290 /** set a bit in a bit array */ 2291 static void 2292 cfg_set_bit(uint8_t* bitlist, size_t len, int id) 2293 { 2294 int pos = id/8; 2295 log_assert((size_t)pos < len); 2296 (void)len; 2297 bitlist[pos] |= 1<<(id%8); 2298 } 2299 2300 uint8_t* config_parse_taglist(struct config_file* cfg, char* str, 2301 size_t* listlen) 2302 { 2303 uint8_t* taglist = NULL; 2304 size_t len = 0; 2305 char* p, *s; 2306 2307 /* allocate */ 2308 if(cfg->num_tags == 0) { 2309 log_err("parse taglist, but no tags defined"); 2310 return 0; 2311 } 2312 len = (size_t)(cfg->num_tags+7)/8; 2313 taglist = calloc(1, len); 2314 if(!taglist) { 2315 log_err("out of memory"); 2316 return 0; 2317 } 2318 2319 /* parse */ 2320 s = str; 2321 while((p=strsep(&s, " \t\n")) != NULL) { 2322 if(*p) { 2323 int id = find_tag_id(cfg, p); 2324 /* set this bit in the bitlist */ 2325 if(id == -1) { 2326 log_err("unknown tag: %s", p); 2327 free(taglist); 2328 return 0; 2329 } 2330 cfg_set_bit(taglist, len, id); 2331 } 2332 } 2333 2334 *listlen = len; 2335 return taglist; 2336 } 2337 2338 uint8_t* cfg_parse_nsid(const char* str, uint16_t* nsid_len) 2339 { 2340 uint8_t* nsid = NULL; 2341 2342 if (strncasecmp(str, "ascii_", 6) == 0) { 2343 if ((nsid = (uint8_t *)strdup(str + 6))) 2344 *nsid_len = strlen(str + 6); 2345 2346 } else if (strlen(str) % 2) { 2347 ; /* hex string has even number of characters */ 2348 } 2349 2350 else if (*str && (nsid = calloc(1, strlen(str) / 2))) { 2351 const char *ch; 2352 uint8_t *dp; 2353 2354 for ( ch = str, dp = nsid 2355 ; isxdigit((unsigned char)ch[0]) && isxdigit((unsigned char)ch[1]) 2356 ; ch += 2, dp++) { 2357 *dp = (uint8_t)sldns_hexdigit_to_int(ch[0]) * 16; 2358 *dp += (uint8_t)sldns_hexdigit_to_int(ch[1]); 2359 } 2360 if (*ch) { 2361 free(nsid); 2362 nsid = NULL; 2363 } else 2364 *nsid_len = strlen(str) / 2; 2365 } 2366 return nsid; 2367 } 2368 2369 2370 char* config_taglist2str(struct config_file* cfg, uint8_t* taglist, 2371 size_t taglen) 2372 { 2373 char buf[10240]; 2374 size_t i, j, len = 0; 2375 buf[0] = 0; 2376 for(i=0; i<taglen; i++) { 2377 if(taglist[i] == 0) 2378 continue; 2379 for(j=0; j<8; j++) { 2380 if((taglist[i] & (1<<j)) != 0) { 2381 size_t id = i*8 + j; 2382 snprintf(buf+len, sizeof(buf)-len, "%s%s", 2383 (len==0?"":" "), cfg->tagname[id]); 2384 len += strlen(buf+len); 2385 } 2386 } 2387 } 2388 return strdup(buf); 2389 } 2390 2391 int taglist_intersect(uint8_t* list1, size_t list1len, const uint8_t* list2, 2392 size_t list2len) 2393 { 2394 size_t i; 2395 if(!list1 || !list2) 2396 return 0; 2397 for(i=0; i<list1len && i<list2len; i++) { 2398 if((list1[i] & list2[i]) != 0) 2399 return 1; 2400 } 2401 return 0; 2402 } 2403 2404 void 2405 config_apply(struct config_file* config) 2406 { 2407 MAX_TTL = (time_t)config->max_ttl; 2408 MIN_TTL = (time_t)config->min_ttl; 2409 SERVE_EXPIRED = config->serve_expired; 2410 SERVE_EXPIRED_TTL = (time_t)config->serve_expired_ttl; 2411 SERVE_EXPIRED_TTL_RESET = config->serve_expired_ttl_reset; 2412 SERVE_EXPIRED_REPLY_TTL = (time_t)config->serve_expired_reply_ttl; 2413 SERVE_ORIGINAL_TTL = config->serve_original_ttl; 2414 MAX_NEG_TTL = (time_t)config->max_negative_ttl; 2415 MIN_NEG_TTL = (time_t)config->min_negative_ttl; 2416 RTT_MIN_TIMEOUT = config->infra_cache_min_rtt; 2417 RTT_MAX_TIMEOUT = config->infra_cache_max_rtt; 2418 EDNS_ADVERTISED_SIZE = (uint16_t)config->edns_buffer_size; 2419 MINIMAL_RESPONSES = config->minimal_responses; 2420 RRSET_ROUNDROBIN = config->rrset_roundrobin; 2421 LOG_TAG_QUERYREPLY = config->log_tag_queryreply; 2422 MAX_GLOBAL_QUOTA = config->max_global_quota; 2423 UNKNOWN_SERVER_NICENESS = config->unknown_server_time_limit; 2424 USEFUL_SERVER_TOP_TIMEOUT = RTT_MAX_TIMEOUT; 2425 BLACKLIST_PENALTY = USEFUL_SERVER_TOP_TIMEOUT*4; 2426 log_set_time_asc(config->log_time_ascii); 2427 log_set_time_iso(config->log_time_iso); 2428 autr_permit_small_holddown = config->permit_small_holddown; 2429 stream_wait_max = config->stream_wait_size; 2430 http2_query_buffer_max = config->http_query_buffer_size; 2431 http2_response_buffer_max = config->http_response_buffer_size; 2432 } 2433 2434 void config_lookup_uid(struct config_file* cfg) 2435 { 2436 #ifdef HAVE_GETPWNAM 2437 /* translate username into uid and gid */ 2438 if(cfg->username && cfg->username[0]) { 2439 struct passwd *pwd; 2440 if((pwd = getpwnam(cfg->username)) != NULL) { 2441 cfg_uid = pwd->pw_uid; 2442 cfg_gid = pwd->pw_gid; 2443 } 2444 } 2445 #else 2446 (void)cfg; 2447 #endif 2448 } 2449 2450 /** 2451 * Calculate string length of full pathname in original filesys 2452 * @param fname: the path name to convert. 2453 * Must not be null or empty. 2454 * @param cfg: config struct for chroot and chdir (if set). 2455 * @param use_chdir: if false, only chroot is applied. 2456 * @return length of string. 2457 * remember to allocate one more for 0 at end in mallocs. 2458 */ 2459 static size_t 2460 strlen_after_chroot(const char* fname, struct config_file* cfg, int use_chdir) 2461 { 2462 size_t len = 0; 2463 int slashit = 0; 2464 if(cfg->chrootdir && cfg->chrootdir[0] && 2465 strncmp(cfg->chrootdir, fname, strlen(cfg->chrootdir)) == 0) { 2466 /* already full pathname, return it */ 2467 return strlen(fname); 2468 } 2469 /* chroot */ 2470 if(cfg->chrootdir && cfg->chrootdir[0]) { 2471 /* start with chrootdir */ 2472 len += strlen(cfg->chrootdir); 2473 slashit = 1; 2474 } 2475 /* chdir */ 2476 #ifdef UB_ON_WINDOWS 2477 if(fname[0] != 0 && fname[1] == ':') { 2478 /* full path, no chdir */ 2479 } else 2480 #endif 2481 if(fname[0] == '/' || !use_chdir) { 2482 /* full path, no chdir */ 2483 } else if(cfg->directory && cfg->directory[0]) { 2484 /* prepend chdir */ 2485 if(slashit && cfg->directory[0] != '/') 2486 len++; 2487 if(cfg->chrootdir && cfg->chrootdir[0] && 2488 strncmp(cfg->chrootdir, cfg->directory, 2489 strlen(cfg->chrootdir)) == 0) 2490 len += strlen(cfg->directory)-strlen(cfg->chrootdir); 2491 else len += strlen(cfg->directory); 2492 slashit = 1; 2493 } 2494 /* fname */ 2495 if(slashit && fname[0] != '/') 2496 len++; 2497 len += strlen(fname); 2498 return len; 2499 } 2500 2501 char* 2502 fname_after_chroot(const char* fname, struct config_file* cfg, int use_chdir) 2503 { 2504 size_t len = strlen_after_chroot(fname, cfg, use_chdir)+1; 2505 int slashit = 0; 2506 char* buf = (char*)malloc(len); 2507 if(!buf) 2508 return NULL; 2509 buf[0] = 0; 2510 /* is fname already in chroot ? */ 2511 if(cfg->chrootdir && cfg->chrootdir[0] && 2512 strncmp(cfg->chrootdir, fname, strlen(cfg->chrootdir)) == 0) { 2513 /* already full pathname, return it */ 2514 (void)strlcpy(buf, fname, len); 2515 buf[len-1] = 0; 2516 return buf; 2517 } 2518 /* chroot */ 2519 if(cfg->chrootdir && cfg->chrootdir[0]) { 2520 /* start with chrootdir */ 2521 (void)strlcpy(buf, cfg->chrootdir, len); 2522 slashit = 1; 2523 } 2524 #ifdef UB_ON_WINDOWS 2525 if(fname[0] != 0 && fname[1] == ':') { 2526 /* full path, no chdir */ 2527 } else 2528 #endif 2529 /* chdir */ 2530 if(fname[0] == '/' || !use_chdir) { 2531 /* full path, no chdir */ 2532 } else if(cfg->directory && cfg->directory[0]) { 2533 /* prepend chdir */ 2534 if(slashit && cfg->directory[0] != '/') 2535 (void)strlcat(buf, "/", len); 2536 /* is the directory already in the chroot? */ 2537 if(cfg->chrootdir && cfg->chrootdir[0] && 2538 strncmp(cfg->chrootdir, cfg->directory, 2539 strlen(cfg->chrootdir)) == 0) 2540 (void)strlcat(buf, cfg->directory+strlen(cfg->chrootdir), 2541 len); 2542 else (void)strlcat(buf, cfg->directory, len); 2543 slashit = 1; 2544 } 2545 /* fname */ 2546 if(slashit && fname[0] != '/') 2547 (void)strlcat(buf, "/", len); 2548 (void)strlcat(buf, fname, len); 2549 buf[len-1] = 0; 2550 return buf; 2551 } 2552 2553 /** return next space character in string */ 2554 static char* next_space_pos(const char* str) 2555 { 2556 char* sp = strchr(str, ' '); 2557 char* tab = strchr(str, '\t'); 2558 if(!tab && !sp) 2559 return NULL; 2560 if(!sp) return tab; 2561 if(!tab) return sp; 2562 return (sp<tab)?sp:tab; 2563 } 2564 2565 /** return last space character in string */ 2566 static char* last_space_pos(const char* str) 2567 { 2568 char* sp = strrchr(str, ' '); 2569 char* tab = strrchr(str, '\t'); 2570 if(!tab && !sp) 2571 return NULL; 2572 if(!sp) return tab; 2573 if(!tab) return sp; 2574 return (sp>tab)?sp:tab; 2575 } 2576 2577 int 2578 cfg_parse_local_zone(struct config_file* cfg, const char* val) 2579 { 2580 const char *type, *name_end, *name; 2581 char buf[256]; 2582 2583 /* parse it as: [zone_name] [between stuff] [zone_type] */ 2584 name = val; 2585 while(*name && isspace((unsigned char)*name)) 2586 name++; 2587 if(!*name) { 2588 log_err("syntax error: too short: %s", val); 2589 return 0; 2590 } 2591 name_end = next_space_pos(name); 2592 if(!name_end || !*name_end) { 2593 log_err("syntax error: expected zone type: %s", val); 2594 return 0; 2595 } 2596 if (name_end - name > 255) { 2597 log_err("syntax error: bad zone name: %s", val); 2598 return 0; 2599 } 2600 (void)strlcpy(buf, name, sizeof(buf)); 2601 buf[name_end-name] = '\0'; 2602 2603 type = last_space_pos(name_end); 2604 while(type && *type && isspace((unsigned char)*type)) 2605 type++; 2606 if(!type || !*type) { 2607 log_err("syntax error: expected zone type: %s", val); 2608 return 0; 2609 } 2610 2611 if(strcmp(type, "nodefault")==0) { 2612 return cfg_strlist_insert(&cfg->local_zones_nodefault, 2613 strdup(name)); 2614 #ifdef USE_IPSET 2615 } else if(strcmp(type, "ipset")==0) { 2616 return cfg_strlist_insert(&cfg->local_zones_ipset, 2617 strdup(name)); 2618 #endif 2619 } else { 2620 return cfg_str2list_insert(&cfg->local_zones, strdup(buf), 2621 strdup(type)); 2622 } 2623 } 2624 2625 char* cfg_ptr_reverse(char* str) 2626 { 2627 char* ip, *ip_end; 2628 char* name; 2629 char* result; 2630 char buf[1024]; 2631 struct sockaddr_storage addr; 2632 socklen_t addrlen; 2633 2634 /* parse it as: [IP] [between stuff] [name] */ 2635 ip = str; 2636 while(*ip && isspace((unsigned char)*ip)) 2637 ip++; 2638 if(!*ip) { 2639 log_err("syntax error: too short: %s", str); 2640 return NULL; 2641 } 2642 ip_end = next_space_pos(ip); 2643 if(!ip_end || !*ip_end) { 2644 log_err("syntax error: expected name: %s", str); 2645 return NULL; 2646 } 2647 2648 name = last_space_pos(ip_end); 2649 if(!name || !*name) { 2650 log_err("syntax error: expected name: %s", str); 2651 return NULL; 2652 } 2653 2654 sscanf(ip, "%100s", buf); 2655 buf[sizeof(buf)-1]=0; 2656 2657 if(!ipstrtoaddr(buf, UNBOUND_DNS_PORT, &addr, &addrlen)) { 2658 log_err("syntax error: cannot parse address: %s", str); 2659 return NULL; 2660 } 2661 2662 /* reverse IPv4: 2663 * ddd.ddd.ddd.ddd.in-addr-arpa. 2664 * IPv6: (h.){32}.ip6.arpa. */ 2665 2666 if(addr_is_ip6(&addr, addrlen)) { 2667 uint8_t ad[16]; 2668 const char* hex = "0123456789abcdef"; 2669 char *p = buf; 2670 int i; 2671 memmove(ad, &((struct sockaddr_in6*)&addr)->sin6_addr, 2672 sizeof(ad)); 2673 for(i=15; i>=0; i--) { 2674 uint8_t b = ad[i]; 2675 *p++ = hex[ (b&0x0f) ]; 2676 *p++ = '.'; 2677 *p++ = hex[ (b&0xf0) >> 4 ]; 2678 *p++ = '.'; 2679 } 2680 snprintf(buf+16*4, sizeof(buf)-16*4, "ip6.arpa. "); 2681 } else { 2682 uint8_t ad[4]; 2683 memmove(ad, &((struct sockaddr_in*)&addr)->sin_addr, 2684 sizeof(ad)); 2685 snprintf(buf, sizeof(buf), "%u.%u.%u.%u.in-addr.arpa. ", 2686 (unsigned)ad[3], (unsigned)ad[2], 2687 (unsigned)ad[1], (unsigned)ad[0]); 2688 } 2689 2690 /* printed the reverse address, now the between goop and name on end */ 2691 while(*ip_end && isspace((unsigned char)*ip_end)) 2692 ip_end++; 2693 if(name>ip_end) { 2694 snprintf(buf+strlen(buf), sizeof(buf)-strlen(buf), "%.*s", 2695 (int)(name-ip_end), ip_end); 2696 } 2697 snprintf(buf+strlen(buf), sizeof(buf)-strlen(buf), " PTR %s", name); 2698 2699 result = strdup(buf); 2700 if(!result) { 2701 log_err("out of memory parsing %s", str); 2702 return NULL; 2703 } 2704 return result; 2705 } 2706 2707 #ifdef UB_ON_WINDOWS 2708 char* 2709 w_lookup_reg_str(const char* key, const char* name) 2710 { 2711 HKEY hk = NULL; 2712 DWORD type = 0; 2713 BYTE buf[1024]; 2714 DWORD len = (DWORD)sizeof(buf); 2715 LONG ret; 2716 char* result = NULL; 2717 ret = RegOpenKeyEx(HKEY_LOCAL_MACHINE, key, 0, KEY_READ, &hk); 2718 if(ret == ERROR_FILE_NOT_FOUND) 2719 return NULL; /* key does not exist */ 2720 else if(ret != ERROR_SUCCESS) { 2721 log_err("RegOpenKeyEx failed"); 2722 return NULL; 2723 } 2724 ret = RegQueryValueEx(hk, (LPCTSTR)name, 0, &type, buf, &len); 2725 if(RegCloseKey(hk)) 2726 log_err("RegCloseKey"); 2727 if(ret == ERROR_FILE_NOT_FOUND) 2728 return NULL; /* name does not exist */ 2729 else if(ret != ERROR_SUCCESS) { 2730 log_err("RegQueryValueEx failed"); 2731 return NULL; 2732 } 2733 if(type == REG_SZ || type == REG_MULTI_SZ || type == REG_EXPAND_SZ) { 2734 buf[sizeof(buf)-1] = 0; 2735 buf[sizeof(buf)-2] = 0; /* for multi_sz */ 2736 result = strdup((char*)buf); 2737 if(!result) log_err("out of memory"); 2738 } 2739 return result; 2740 } 2741 2742 void w_config_adjust_directory(struct config_file* cfg) 2743 { 2744 if(cfg->directory && cfg->directory[0]) { 2745 TCHAR dirbuf[2*MAX_PATH+4]; 2746 if(strcmp(cfg->directory, "%EXECUTABLE%") == 0) { 2747 /* get executable path, and if that contains 2748 * directories, snip off the filename part */ 2749 dirbuf[0] = 0; 2750 if(!GetModuleFileName(NULL, dirbuf, MAX_PATH)) 2751 log_err("could not GetModuleFileName"); 2752 if(strrchr(dirbuf, '\\')) { 2753 (strrchr(dirbuf, '\\'))[0] = 0; 2754 } else log_err("GetModuleFileName had no path"); 2755 if(dirbuf[0]) { 2756 /* adjust directory for later lookups to work*/ 2757 free(cfg->directory); 2758 cfg->directory = memdup(dirbuf, strlen(dirbuf)+1); 2759 } 2760 } 2761 } 2762 } 2763 #endif /* UB_ON_WINDOWS */ 2764 2765 int options_remote_is_address(struct config_file* cfg) 2766 { 2767 if(!cfg->remote_control_enable) return 0; 2768 if(!cfg->control_ifs.first) return 1; 2769 if(!cfg->control_ifs.first->str) return 1; 2770 if(cfg->control_ifs.first->str[0] == 0) return 1; 2771 return (cfg->control_ifs.first->str[0] != '/'); 2772 } 2773 2774 /** see if interface is https, its port number == the https port number */ 2775 int 2776 if_is_https(const char* ifname, const char* port, int https_port) 2777 { 2778 char* p = strchr(ifname, '@'); 2779 if(!p && atoi(port) == https_port) 2780 return 1; 2781 if(p && atoi(p+1) == https_port) 2782 return 1; 2783 return 0; 2784 } 2785 2786 /** see if config contains https turned on */ 2787 int cfg_has_https(struct config_file* cfg) 2788 { 2789 int i; 2790 char portbuf[32]; 2791 snprintf(portbuf, sizeof(portbuf), "%d", cfg->port); 2792 for(i = 0; i<cfg->num_ifs; i++) { 2793 if(if_is_https(cfg->ifs[i], portbuf, cfg->https_port)) 2794 return 1; 2795 } 2796 return 0; 2797 } 2798 2799 /** see if interface is PROXYv2, its port number == the proxy port number */ 2800 int 2801 if_is_pp2(const char* ifname, const char* port, 2802 struct config_strlist* proxy_protocol_port) 2803 { 2804 struct config_strlist* s; 2805 char* p = strchr(ifname, '@'); 2806 for(s = proxy_protocol_port; s; s = s->next) { 2807 if(p && atoi(p+1) == atoi(s->str)) 2808 return 1; 2809 if(!p && atoi(port) == atoi(s->str)) 2810 return 1; 2811 } 2812 return 0; 2813 } 2814 2815 /** see if interface is DNSCRYPT, its port number == the dnscrypt port number */ 2816 int 2817 if_is_dnscrypt(const char* ifname, const char* port, int dnscrypt_port) 2818 { 2819 #ifdef USE_DNSCRYPT 2820 return ((strchr(ifname, '@') && 2821 atoi(strchr(ifname, '@')+1) == dnscrypt_port) || 2822 (!strchr(ifname, '@') && atoi(port) == dnscrypt_port)); 2823 #else 2824 (void)ifname; 2825 (void)port; 2826 (void)dnscrypt_port; 2827 return 0; 2828 #endif 2829 } 2830 2831 /** see if interface is quic, its port number == the quic port number */ 2832 int 2833 if_is_quic(const char* ifname, const char* port, int quic_port) 2834 { 2835 #ifndef HAVE_NGTCP2 2836 (void)ifname; 2837 (void)port; 2838 (void)quic_port; 2839 return 0; 2840 #else 2841 char* p = strchr(ifname, '@'); 2842 if(!p && atoi(port) == quic_port) 2843 return 1; 2844 if(p && atoi(p+1) == quic_port) 2845 return 1; 2846 return 0; 2847 #endif 2848 } 2849