1 /* 2 * util/config_file.c - reads and stores the config file for unbound. 3 * 4 * Copyright (c) 2007, NLnet Labs. All rights reserved. 5 * 6 * This software is open source. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 12 * Redistributions of source code must retain the above copyright notice, 13 * this list of conditions and the following disclaimer. 14 * 15 * Redistributions in binary form must reproduce the above copyright notice, 16 * this list of conditions and the following disclaimer in the documentation 17 * and/or other materials provided with the distribution. 18 * 19 * Neither the name of the NLNET LABS nor the names of its contributors may 20 * be used to endorse or promote products derived from this software without 21 * specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 24 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 25 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 26 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 27 * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 28 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED 29 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 30 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 31 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 32 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 33 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 34 */ 35 36 /** 37 * \file 38 * 39 * This file contains functions for the config file. 40 */ 41 42 #include "config.h" 43 #include <ctype.h> 44 #include <stdarg.h> 45 #ifdef HAVE_TIME_H 46 #include <time.h> 47 #endif 48 #include "util/log.h" 49 #include "util/configyyrename.h" 50 #include "util/config_file.h" 51 #include "configparser.h" 52 #include "util/net_help.h" 53 #include "util/data/msgparse.h" 54 #include "util/module.h" 55 #include "util/regional.h" 56 #include "util/fptr_wlist.h" 57 #include "util/data/dname.h" 58 #include "util/random.h" 59 #include "util/rtt.h" 60 #include "services/cache/infra.h" 61 #include "sldns/wire2str.h" 62 #include "sldns/parseutil.h" 63 #include "iterator/iterator.h" 64 #ifdef HAVE_GLOB_H 65 # include <glob.h> 66 #endif 67 #ifdef CLIENT_SUBNET 68 #include "edns-subnet/edns-subnet.h" 69 #endif 70 #ifdef HAVE_PWD_H 71 #include <pwd.h> 72 #endif 73 74 /** from cfg username, after daemonize setup performed */ 75 uid_t cfg_uid = (uid_t)-1; 76 /** from cfg username, after daemonize setup performed */ 77 gid_t cfg_gid = (gid_t)-1; 78 /** for debug allow small timeout values for fast rollovers */ 79 int autr_permit_small_holddown = 0; 80 /** size (in bytes) of stream wait buffers max */ 81 size_t stream_wait_max = 4 * 1024 * 1024; 82 size_t http2_query_buffer_max = 4 * 1024 * 1024; 83 size_t http2_response_buffer_max = 4 * 1024 * 1024; 84 85 /** global config during parsing */ 86 struct config_parser_state* cfg_parser = 0; 87 88 /** init ports possible for use */ 89 static void init_outgoing_availports(int* array, int num); 90 91 /** init cookie with random data */ 92 static void init_cookie_secret(uint8_t* cookie_secret, size_t cookie_secret_len); 93 94 struct config_file* 95 config_create(void) 96 { 97 struct config_file* cfg; 98 cfg = (struct config_file*)calloc(1, sizeof(struct config_file)); 99 if(!cfg) 100 return NULL; 101 /* the defaults if no config is present */ 102 cfg->verbosity = 1; 103 cfg->stat_interval = 0; 104 cfg->stat_cumulative = 0; 105 cfg->stat_extended = 0; 106 cfg->stat_inhibit_zero = 1; 107 cfg->num_threads = 1; 108 cfg->port = UNBOUND_DNS_PORT; 109 cfg->do_ip4 = 1; 110 cfg->do_ip6 = 1; 111 cfg->do_udp = 1; 112 cfg->do_tcp = 1; 113 cfg->tcp_reuse_timeout = 60 * 1000; /* 60s in milisecs */ 114 cfg->max_reuse_tcp_queries = 200; 115 cfg->tcp_upstream = 0; 116 cfg->udp_upstream_without_downstream = 0; 117 cfg->tcp_mss = 0; 118 cfg->outgoing_tcp_mss = 0; 119 cfg->tcp_idle_timeout = 30 * 1000; /* 30s in millisecs */ 120 cfg->tcp_auth_query_timeout = 3 * 1000; /* 3s in millisecs */ 121 cfg->do_tcp_keepalive = 0; 122 cfg->tcp_keepalive_timeout = 120 * 1000; /* 120s in millisecs */ 123 cfg->sock_queue_timeout = 0; /* do not check timeout */ 124 cfg->ssl_service_key = NULL; 125 cfg->ssl_service_pem = NULL; 126 cfg->ssl_port = UNBOUND_DNS_OVER_TLS_PORT; 127 cfg->ssl_upstream = 0; 128 cfg->tls_cert_bundle = NULL; 129 cfg->tls_win_cert = 0; 130 cfg->tls_use_sni = 1; 131 cfg->https_port = UNBOUND_DNS_OVER_HTTPS_PORT; 132 if(!(cfg->http_endpoint = strdup("/dns-query"))) goto error_exit; 133 cfg->http_max_streams = 100; 134 cfg->http_query_buffer_size = 4*1024*1024; 135 cfg->http_response_buffer_size = 4*1024*1024; 136 cfg->http_nodelay = 1; 137 cfg->use_syslog = 1; 138 cfg->log_identity = NULL; /* changed later with argv[0] */ 139 cfg->log_time_ascii = 0; 140 cfg->log_queries = 0; 141 cfg->log_replies = 0; 142 cfg->log_tag_queryreply = 0; 143 cfg->log_local_actions = 0; 144 cfg->log_servfail = 0; 145 cfg->log_destaddr = 0; 146 #ifndef USE_WINSOCK 147 # ifdef USE_MINI_EVENT 148 /* select max 1024 sockets */ 149 cfg->outgoing_num_ports = 960; 150 cfg->num_queries_per_thread = 512; 151 # else 152 /* libevent can use many sockets */ 153 cfg->outgoing_num_ports = 4096; 154 cfg->num_queries_per_thread = 1024; 155 # endif 156 cfg->outgoing_num_tcp = 10; 157 cfg->incoming_num_tcp = 10; 158 #else 159 cfg->outgoing_num_ports = 48; /* windows is limited in num fds */ 160 cfg->num_queries_per_thread = 24; 161 cfg->outgoing_num_tcp = 2; /* leaves 64-52=12 for: 4if,1stop,thread4 */ 162 cfg->incoming_num_tcp = 2; 163 #endif 164 cfg->stream_wait_size = 4 * 1024 * 1024; 165 cfg->edns_buffer_size = 1232; /* from DNS flagday recommendation */ 166 cfg->msg_buffer_size = 65552; /* 64 k + a small margin */ 167 cfg->msg_cache_size = 4 * 1024 * 1024; 168 cfg->msg_cache_slabs = 4; 169 cfg->jostle_time = 200; 170 cfg->rrset_cache_size = 4 * 1024 * 1024; 171 cfg->rrset_cache_slabs = 4; 172 cfg->host_ttl = 900; 173 cfg->bogus_ttl = 60; 174 cfg->min_ttl = 0; 175 cfg->max_ttl = 3600 * 24; 176 cfg->max_negative_ttl = 3600; 177 cfg->min_negative_ttl = 0; 178 cfg->prefetch = 0; 179 cfg->prefetch_key = 0; 180 cfg->deny_any = 0; 181 cfg->infra_cache_slabs = 4; 182 cfg->infra_cache_numhosts = 10000; 183 cfg->infra_cache_min_rtt = 50; 184 cfg->infra_cache_max_rtt = 120000; 185 cfg->infra_keep_probing = 0; 186 cfg->delay_close = 0; 187 cfg->udp_connect = 1; 188 if(!(cfg->outgoing_avail_ports = (int*)calloc(65536, sizeof(int)))) 189 goto error_exit; 190 init_outgoing_availports(cfg->outgoing_avail_ports, 65536); 191 if(!(cfg->username = strdup(UB_USERNAME))) goto error_exit; 192 #ifdef HAVE_CHROOT 193 if(!(cfg->chrootdir = strdup(CHROOT_DIR))) goto error_exit; 194 #endif 195 if(!(cfg->directory = strdup(RUN_DIR))) goto error_exit; 196 if(!(cfg->logfile = strdup(""))) goto error_exit; 197 if(!(cfg->pidfile = strdup(PIDFILE))) goto error_exit; 198 if(!(cfg->target_fetch_policy = strdup("3 2 1 0 0"))) goto error_exit; 199 cfg->fast_server_permil = 0; 200 cfg->fast_server_num = 3; 201 cfg->donotqueryaddrs = NULL; 202 cfg->donotquery_localhost = 1; 203 cfg->root_hints = NULL; 204 cfg->use_systemd = 0; 205 cfg->do_daemonize = 1; 206 cfg->if_automatic = 0; 207 cfg->if_automatic_ports = NULL; 208 cfg->so_rcvbuf = 0; 209 cfg->so_sndbuf = 0; 210 cfg->so_reuseport = REUSEPORT_DEFAULT; 211 cfg->ip_transparent = 0; 212 cfg->ip_freebind = 0; 213 cfg->ip_dscp = 0; 214 cfg->num_ifs = 0; 215 cfg->ifs = NULL; 216 cfg->num_out_ifs = 0; 217 cfg->out_ifs = NULL; 218 cfg->stubs = NULL; 219 cfg->forwards = NULL; 220 cfg->auths = NULL; 221 #ifdef CLIENT_SUBNET 222 cfg->client_subnet = NULL; 223 cfg->client_subnet_zone = NULL; 224 cfg->client_subnet_opcode = LDNS_EDNS_CLIENT_SUBNET; 225 cfg->client_subnet_always_forward = 0; 226 cfg->max_client_subnet_ipv4 = 24; 227 cfg->max_client_subnet_ipv6 = 56; 228 cfg->min_client_subnet_ipv4 = 0; 229 cfg->min_client_subnet_ipv6 = 0; 230 cfg->max_ecs_tree_size_ipv4 = 100; 231 cfg->max_ecs_tree_size_ipv6 = 100; 232 #endif 233 cfg->views = NULL; 234 cfg->acls = NULL; 235 cfg->tcp_connection_limits = NULL; 236 cfg->harden_short_bufsize = 1; 237 cfg->harden_large_queries = 0; 238 cfg->harden_glue = 1; 239 cfg->harden_dnssec_stripped = 1; 240 cfg->harden_below_nxdomain = 1; 241 cfg->harden_referral_path = 0; 242 cfg->harden_algo_downgrade = 0; 243 cfg->harden_unknown_additional = 0; 244 cfg->use_caps_bits_for_id = 0; 245 cfg->caps_whitelist = NULL; 246 cfg->private_address = NULL; 247 cfg->private_domain = NULL; 248 cfg->unwanted_threshold = 0; 249 cfg->hide_identity = 0; 250 cfg->hide_version = 0; 251 cfg->hide_trustanchor = 0; 252 cfg->hide_http_user_agent = 0; 253 cfg->identity = NULL; 254 cfg->version = NULL; 255 cfg->http_user_agent = NULL; 256 cfg->nsid_cfg_str = NULL; 257 cfg->nsid = NULL; 258 cfg->nsid_len = 0; 259 cfg->auto_trust_anchor_file_list = NULL; 260 cfg->trust_anchor_file_list = NULL; 261 cfg->trust_anchor_list = NULL; 262 cfg->trusted_keys_file_list = NULL; 263 cfg->trust_anchor_signaling = 1; 264 cfg->root_key_sentinel = 1; 265 cfg->domain_insecure = NULL; 266 cfg->val_date_override = 0; 267 cfg->val_sig_skew_min = 3600; /* at least daylight savings trouble */ 268 cfg->val_sig_skew_max = 86400; /* at most timezone settings trouble */ 269 cfg->val_max_restart = 5; 270 cfg->val_clean_additional = 1; 271 cfg->val_log_level = 0; 272 cfg->val_log_squelch = 0; 273 cfg->val_permissive_mode = 0; 274 cfg->aggressive_nsec = 1; 275 cfg->ignore_cd = 0; 276 cfg->disable_edns_do = 0; 277 cfg->serve_expired = 0; 278 cfg->serve_expired_ttl = 0; 279 cfg->serve_expired_ttl_reset = 0; 280 cfg->serve_expired_reply_ttl = 30; 281 cfg->serve_expired_client_timeout = 0; 282 cfg->ede_serve_expired = 0; 283 cfg->serve_original_ttl = 0; 284 cfg->zonemd_permissive_mode = 0; 285 cfg->add_holddown = 30*24*3600; 286 cfg->del_holddown = 30*24*3600; 287 cfg->keep_missing = 366*24*3600; /* one year plus a little leeway */ 288 cfg->permit_small_holddown = 0; 289 cfg->key_cache_size = 4 * 1024 * 1024; 290 cfg->key_cache_slabs = 4; 291 cfg->neg_cache_size = 1 * 1024 * 1024; 292 cfg->local_zones = NULL; 293 cfg->local_zones_nodefault = NULL; 294 #ifdef USE_IPSET 295 cfg->local_zones_ipset = NULL; 296 #endif 297 cfg->local_zones_disable_default = 0; 298 cfg->local_data = NULL; 299 cfg->local_zone_overrides = NULL; 300 cfg->unblock_lan_zones = 0; 301 cfg->insecure_lan_zones = 0; 302 cfg->python_script = NULL; 303 cfg->dynlib_file = NULL; 304 cfg->remote_control_enable = 0; 305 cfg->control_ifs.first = NULL; 306 cfg->control_ifs.last = NULL; 307 cfg->control_port = UNBOUND_CONTROL_PORT; 308 cfg->control_use_cert = 1; 309 cfg->minimal_responses = 1; 310 cfg->rrset_roundrobin = 1; 311 cfg->unknown_server_time_limit = 376; 312 cfg->discard_timeout = 1900; /* msec */ 313 cfg->wait_limit = 1000; 314 cfg->wait_limit_cookie = 10000; 315 cfg->wait_limit_netblock = NULL; 316 cfg->wait_limit_cookie_netblock = NULL; 317 cfg->max_udp_size = 1232; /* value taken from edns_buffer_size */ 318 if(!(cfg->server_key_file = strdup(RUN_DIR"/unbound_server.key"))) 319 goto error_exit; 320 if(!(cfg->server_cert_file = strdup(RUN_DIR"/unbound_server.pem"))) 321 goto error_exit; 322 if(!(cfg->control_key_file = strdup(RUN_DIR"/unbound_control.key"))) 323 goto error_exit; 324 if(!(cfg->control_cert_file = strdup(RUN_DIR"/unbound_control.pem"))) 325 goto error_exit; 326 327 #ifdef CLIENT_SUBNET 328 if(!(cfg->module_conf = strdup("subnetcache validator iterator"))) goto error_exit; 329 #else 330 if(!(cfg->module_conf = strdup("validator iterator"))) goto error_exit; 331 #endif 332 if(!(cfg->val_nsec3_key_iterations = 333 strdup("1024 150 2048 150 4096 150"))) goto error_exit; 334 #if defined(DNSTAP_SOCKET_PATH) 335 if(!(cfg->dnstap_socket_path = strdup(DNSTAP_SOCKET_PATH))) 336 goto error_exit; 337 #endif 338 cfg->dnstap_bidirectional = 1; 339 cfg->dnstap_tls = 1; 340 cfg->disable_dnssec_lame_check = 0; 341 cfg->ip_ratelimit_cookie = 0; 342 cfg->ip_ratelimit = 0; 343 cfg->ratelimit = 0; 344 cfg->ip_ratelimit_slabs = 4; 345 cfg->ratelimit_slabs = 4; 346 cfg->ip_ratelimit_size = 4*1024*1024; 347 cfg->ratelimit_size = 4*1024*1024; 348 cfg->ratelimit_for_domain = NULL; 349 cfg->ratelimit_below_domain = NULL; 350 cfg->ip_ratelimit_factor = 10; 351 cfg->ratelimit_factor = 10; 352 cfg->ip_ratelimit_backoff = 0; 353 cfg->ratelimit_backoff = 0; 354 cfg->outbound_msg_retry = 5; 355 cfg->max_sent_count = 32; 356 cfg->max_query_restarts = 11; 357 cfg->qname_minimisation = 1; 358 cfg->qname_minimisation_strict = 0; 359 cfg->shm_enable = 0; 360 cfg->shm_key = 11777; 361 cfg->edns_client_strings = NULL; 362 cfg->edns_client_string_opcode = 65001; 363 cfg->dnscrypt = 0; 364 cfg->dnscrypt_port = 0; 365 cfg->dnscrypt_provider = NULL; 366 cfg->dnscrypt_provider_cert = NULL; 367 cfg->dnscrypt_provider_cert_rotated = NULL; 368 cfg->dnscrypt_secret_key = NULL; 369 cfg->dnscrypt_shared_secret_cache_size = 4*1024*1024; 370 cfg->dnscrypt_shared_secret_cache_slabs = 4; 371 cfg->dnscrypt_nonce_cache_size = 4*1024*1024; 372 cfg->dnscrypt_nonce_cache_slabs = 4; 373 cfg->pad_responses = 1; 374 cfg->pad_responses_block_size = 468; /* from RFC8467 */ 375 cfg->pad_queries = 1; 376 cfg->pad_queries_block_size = 128; /* from RFC8467 */ 377 #ifdef USE_IPSECMOD 378 cfg->ipsecmod_enabled = 1; 379 cfg->ipsecmod_ignore_bogus = 0; 380 cfg->ipsecmod_hook = NULL; 381 cfg->ipsecmod_max_ttl = 3600; 382 cfg->ipsecmod_whitelist = NULL; 383 cfg->ipsecmod_strict = 0; 384 #endif 385 cfg->do_answer_cookie = 0; 386 memset(cfg->cookie_secret, 0, sizeof(cfg->cookie_secret)); 387 cfg->cookie_secret_len = 16; 388 init_cookie_secret(cfg->cookie_secret, cfg->cookie_secret_len); 389 #ifdef USE_CACHEDB 390 if(!(cfg->cachedb_backend = strdup("testframe"))) goto error_exit; 391 if(!(cfg->cachedb_secret = strdup("default"))) goto error_exit; 392 cfg->cachedb_no_store = 0; 393 cfg->cachedb_check_when_serve_expired = 1; 394 #ifdef USE_REDIS 395 if(!(cfg->redis_server_host = strdup("127.0.0.1"))) goto error_exit; 396 cfg->redis_server_path = NULL; 397 cfg->redis_server_password = NULL; 398 cfg->redis_timeout = 100; 399 cfg->redis_server_port = 6379; 400 cfg->redis_expire_records = 0; 401 cfg->redis_logical_db = 0; 402 #endif /* USE_REDIS */ 403 #endif /* USE_CACHEDB */ 404 #ifdef USE_IPSET 405 cfg->ipset_name_v4 = NULL; 406 cfg->ipset_name_v6 = NULL; 407 #endif 408 cfg->ede = 0; 409 return cfg; 410 error_exit: 411 config_delete(cfg); 412 return NULL; 413 } 414 415 struct config_file* config_create_forlib(void) 416 { 417 struct config_file* cfg = config_create(); 418 if(!cfg) return NULL; 419 /* modifications for library use, less verbose, less memory */ 420 free(cfg->chrootdir); 421 cfg->chrootdir = NULL; 422 cfg->verbosity = 0; 423 cfg->outgoing_num_ports = 16; /* in library use, this is 'reasonable' 424 and probably within the ulimit(maxfds) of the user */ 425 cfg->outgoing_num_tcp = 2; 426 cfg->msg_cache_size = 1024*1024; 427 cfg->msg_cache_slabs = 1; 428 cfg->rrset_cache_size = 1024*1024; 429 cfg->rrset_cache_slabs = 1; 430 cfg->infra_cache_slabs = 1; 431 cfg->use_syslog = 0; 432 cfg->key_cache_size = 1024*1024; 433 cfg->key_cache_slabs = 1; 434 cfg->neg_cache_size = 100 * 1024; 435 cfg->donotquery_localhost = 0; /* allow, so that you can ask a 436 forward nameserver running on localhost */ 437 cfg->val_log_level = 2; /* to fill why_bogus with */ 438 cfg->val_log_squelch = 1; 439 cfg->minimal_responses = 0; 440 cfg->harden_short_bufsize = 1; 441 return cfg; 442 } 443 444 /** check that the value passed is >= 0 */ 445 #define IS_NUMBER_OR_ZERO \ 446 if(atoi(val) == 0 && strcmp(val, "0") != 0) return 0 447 /** check that the value passed is > 0 */ 448 #define IS_NONZERO_NUMBER \ 449 if(atoi(val) == 0) return 0 450 /** check that the value passed is not 0 and a power of 2 */ 451 #define IS_POW2_NUMBER \ 452 if(atoi(val) == 0 || !is_pow2((size_t)atoi(val))) return 0 453 /** check that the value passed is yes or no */ 454 #define IS_YES_OR_NO \ 455 if(strcmp(val, "yes") != 0 && strcmp(val, "no") != 0) return 0 456 /** put integer_or_zero into variable */ 457 #define S_NUMBER_OR_ZERO(str, var) if(strcmp(opt, str) == 0) \ 458 { IS_NUMBER_OR_ZERO; cfg->var = atoi(val); } 459 /** put integer_nonzero into variable */ 460 #define S_NUMBER_NONZERO(str, var) if(strcmp(opt, str) == 0) \ 461 { IS_NONZERO_NUMBER; cfg->var = atoi(val); } 462 /** put integer_or_zero into unsigned */ 463 #define S_UNSIGNED_OR_ZERO(str, var) if(strcmp(opt, str) == 0) \ 464 { IS_NUMBER_OR_ZERO; cfg->var = (unsigned)atoi(val); } 465 /** put integer_or_zero into size_t */ 466 #define S_SIZET_OR_ZERO(str, var) if(strcmp(opt, str) == 0) \ 467 { IS_NUMBER_OR_ZERO; cfg->var = (size_t)atoi(val); } 468 /** put integer_nonzero into size_t */ 469 #define S_SIZET_NONZERO(str, var) if(strcmp(opt, str) == 0) \ 470 { IS_NONZERO_NUMBER; cfg->var = (size_t)atoi(val); } 471 /** put yesno into variable */ 472 #define S_YNO(str, var) if(strcmp(opt, str) == 0) \ 473 { IS_YES_OR_NO; cfg->var = (strcmp(val, "yes") == 0); } 474 /** put memsize into variable */ 475 #define S_MEMSIZE(str, var) if(strcmp(opt, str)==0) \ 476 { return cfg_parse_memsize(val, &cfg->var); } 477 /** put pow2 number into variable */ 478 #define S_POW2(str, var) if(strcmp(opt, str)==0) \ 479 { IS_POW2_NUMBER; cfg->var = (size_t)atoi(val); } 480 /** put string into variable */ 481 #define S_STR(str, var) if(strcmp(opt, str)==0) \ 482 { free(cfg->var); return (cfg->var = strdup(val)) != NULL; } 483 /** put string into strlist */ 484 #define S_STRLIST(str, var) if(strcmp(opt, str)==0) \ 485 { return cfg_strlist_insert(&cfg->var, strdup(val)); } 486 /** put string into strlist if not present yet*/ 487 #define S_STRLIST_UNIQ(str, var) if(strcmp(opt, str)==0) \ 488 { if(cfg_strlist_find(cfg->var, val)) { return 0;} \ 489 return cfg_strlist_insert(&cfg->var, strdup(val)); } 490 /** append string to strlist */ 491 #define S_STRLIST_APPEND(str, var) if(strcmp(opt, str)==0) \ 492 { return cfg_strlist_append(&cfg->var, strdup(val)); } 493 494 int config_set_option(struct config_file* cfg, const char* opt, 495 const char* val) 496 { 497 char buf[64]; 498 if(!opt) return 0; 499 if(opt[strlen(opt)-1] != ':' && strlen(opt)+2<sizeof(buf)) { 500 snprintf(buf, sizeof(buf), "%s:", opt); 501 opt = buf; 502 } 503 S_NUMBER_OR_ZERO("verbosity:", verbosity) 504 else if(strcmp(opt, "statistics-interval:") == 0) { 505 if(strcmp(val, "0") == 0 || strcmp(val, "") == 0) 506 cfg->stat_interval = 0; 507 else if(atoi(val) == 0) 508 return 0; 509 else cfg->stat_interval = atoi(val); 510 } else if(strcmp(opt, "num-threads:") == 0) { 511 /* not supported, library must have 1 thread in bgworker */ 512 return 0; 513 } else if(strcmp(opt, "outgoing-port-permit:") == 0) { 514 return cfg_mark_ports(val, 1, 515 cfg->outgoing_avail_ports, 65536); 516 } else if(strcmp(opt, "outgoing-port-avoid:") == 0) { 517 return cfg_mark_ports(val, 0, 518 cfg->outgoing_avail_ports, 65536); 519 } else if(strcmp(opt, "local-zone:") == 0) { 520 return cfg_parse_local_zone(cfg, val); 521 } else if(strcmp(opt, "val-override-date:") == 0) { 522 if(strcmp(val, "") == 0 || strcmp(val, "0") == 0) { 523 cfg->val_date_override = 0; 524 } else if(strlen(val) == 14) { 525 cfg->val_date_override = cfg_convert_timeval(val); 526 return cfg->val_date_override != 0; 527 } else { 528 if(atoi(val) == 0) return 0; 529 cfg->val_date_override = (uint32_t)atoi(val); 530 } 531 } else if(strcmp(opt, "local-data-ptr:") == 0) { 532 char* ptr = cfg_ptr_reverse((char*)opt); 533 return cfg_strlist_insert(&cfg->local_data, ptr); 534 } else if(strcmp(opt, "logfile:") == 0) { 535 cfg->use_syslog = 0; 536 free(cfg->logfile); 537 return (cfg->logfile = strdup(val)) != NULL; 538 } 539 else if(strcmp(opt, "log-time-ascii:") == 0) 540 { IS_YES_OR_NO; cfg->log_time_ascii = (strcmp(val, "yes") == 0); 541 log_set_time_asc(cfg->log_time_ascii); } 542 else S_SIZET_NONZERO("max-udp-size:", max_udp_size) 543 else S_YNO("use-syslog:", use_syslog) 544 else S_STR("log-identity:", log_identity) 545 else S_YNO("extended-statistics:", stat_extended) 546 else S_YNO("statistics-inhibit-zero:", stat_inhibit_zero) 547 else S_YNO("statistics-cumulative:", stat_cumulative) 548 else S_YNO("shm-enable:", shm_enable) 549 else S_NUMBER_OR_ZERO("shm-key:", shm_key) 550 else S_YNO("do-ip4:", do_ip4) 551 else S_YNO("do-ip6:", do_ip6) 552 else S_YNO("do-udp:", do_udp) 553 else S_YNO("do-tcp:", do_tcp) 554 else S_YNO("prefer-ip4:", prefer_ip4) 555 else S_YNO("prefer-ip6:", prefer_ip6) 556 else S_YNO("tcp-upstream:", tcp_upstream) 557 else S_YNO("udp-upstream-without-downstream:", 558 udp_upstream_without_downstream) 559 else S_NUMBER_NONZERO("tcp-mss:", tcp_mss) 560 else S_NUMBER_NONZERO("outgoing-tcp-mss:", outgoing_tcp_mss) 561 else S_NUMBER_NONZERO("tcp-auth-query-timeout:", tcp_auth_query_timeout) 562 else S_NUMBER_NONZERO("tcp-idle-timeout:", tcp_idle_timeout) 563 else S_NUMBER_NONZERO("max-reuse-tcp-queries:", max_reuse_tcp_queries) 564 else S_NUMBER_NONZERO("tcp-reuse-timeout:", tcp_reuse_timeout) 565 else S_YNO("edns-tcp-keepalive:", do_tcp_keepalive) 566 else S_NUMBER_NONZERO("edns-tcp-keepalive-timeout:", tcp_keepalive_timeout) 567 else S_NUMBER_OR_ZERO("sock-queue-timeout:", sock_queue_timeout) 568 else S_YNO("ssl-upstream:", ssl_upstream) 569 else S_YNO("tls-upstream:", ssl_upstream) 570 else S_STR("ssl-service-key:", ssl_service_key) 571 else S_STR("tls-service-key:", ssl_service_key) 572 else S_STR("ssl-service-pem:", ssl_service_pem) 573 else S_STR("tls-service-pem:", ssl_service_pem) 574 else S_NUMBER_NONZERO("ssl-port:", ssl_port) 575 else S_NUMBER_NONZERO("tls-port:", ssl_port) 576 else S_STR("ssl-cert-bundle:", tls_cert_bundle) 577 else S_STR("tls-cert-bundle:", tls_cert_bundle) 578 else S_YNO("tls-win-cert:", tls_win_cert) 579 else S_YNO("tls-system-cert:", tls_win_cert) 580 else S_STRLIST("additional-ssl-port:", tls_additional_port) 581 else S_STRLIST("additional-tls-port:", tls_additional_port) 582 else S_STRLIST("tls-additional-ports:", tls_additional_port) 583 else S_STRLIST("tls-additional-port:", tls_additional_port) 584 else S_STRLIST_APPEND("tls-session-ticket-keys:", tls_session_ticket_keys) 585 else S_STR("tls-ciphers:", tls_ciphers) 586 else S_STR("tls-ciphersuites:", tls_ciphersuites) 587 else S_YNO("tls-use-sni:", tls_use_sni) 588 else S_NUMBER_NONZERO("https-port:", https_port) 589 else S_STR("http-endpoint:", http_endpoint) 590 else S_NUMBER_NONZERO("http-max-streams:", http_max_streams) 591 else S_MEMSIZE("http-query-buffer-size:", http_query_buffer_size) 592 else S_MEMSIZE("http-response-buffer-size:", http_response_buffer_size) 593 else S_YNO("http-nodelay:", http_nodelay) 594 else S_YNO("http-notls-downstream:", http_notls_downstream) 595 else S_YNO("interface-automatic:", if_automatic) 596 else S_STR("interface-automatic-ports:", if_automatic_ports) 597 else S_YNO("use-systemd:", use_systemd) 598 else S_YNO("do-daemonize:", do_daemonize) 599 else S_NUMBER_NONZERO("port:", port) 600 else S_NUMBER_NONZERO("outgoing-range:", outgoing_num_ports) 601 else S_SIZET_OR_ZERO("outgoing-num-tcp:", outgoing_num_tcp) 602 else S_SIZET_OR_ZERO("incoming-num-tcp:", incoming_num_tcp) 603 else S_MEMSIZE("stream-wait-size:", stream_wait_size) 604 else S_SIZET_NONZERO("edns-buffer-size:", edns_buffer_size) 605 else S_SIZET_NONZERO("msg-buffer-size:", msg_buffer_size) 606 else S_MEMSIZE("msg-cache-size:", msg_cache_size) 607 else S_POW2("msg-cache-slabs:", msg_cache_slabs) 608 else S_SIZET_NONZERO("num-queries-per-thread:",num_queries_per_thread) 609 else S_SIZET_OR_ZERO("jostle-timeout:", jostle_time) 610 else S_MEMSIZE("so-rcvbuf:", so_rcvbuf) 611 else S_MEMSIZE("so-sndbuf:", so_sndbuf) 612 else S_YNO("so-reuseport:", so_reuseport) 613 else S_YNO("ip-transparent:", ip_transparent) 614 else S_YNO("ip-freebind:", ip_freebind) 615 else S_NUMBER_OR_ZERO("ip-dscp:", ip_dscp) 616 else S_MEMSIZE("rrset-cache-size:", rrset_cache_size) 617 else S_POW2("rrset-cache-slabs:", rrset_cache_slabs) 618 else S_YNO("prefetch:", prefetch) 619 else S_YNO("prefetch-key:", prefetch_key) 620 else S_YNO("deny-any:", deny_any) 621 else if(strcmp(opt, "cache-max-ttl:") == 0) 622 { IS_NUMBER_OR_ZERO; cfg->max_ttl = atoi(val); MAX_TTL=(time_t)cfg->max_ttl;} 623 else if(strcmp(opt, "cache-max-negative-ttl:") == 0) 624 { IS_NUMBER_OR_ZERO; cfg->max_negative_ttl = atoi(val); MAX_NEG_TTL=(time_t)cfg->max_negative_ttl;} 625 else if(strcmp(opt, "cache-min-negative-ttl:") == 0) 626 { IS_NUMBER_OR_ZERO; cfg->min_negative_ttl = atoi(val); MIN_NEG_TTL=(time_t)cfg->min_negative_ttl;} 627 else if(strcmp(opt, "cache-min-ttl:") == 0) 628 { IS_NUMBER_OR_ZERO; cfg->min_ttl = atoi(val); MIN_TTL=(time_t)cfg->min_ttl;} 629 else if(strcmp(opt, "infra-cache-min-rtt:") == 0) { 630 IS_NUMBER_OR_ZERO; cfg->infra_cache_min_rtt = atoi(val); 631 RTT_MIN_TIMEOUT=cfg->infra_cache_min_rtt; 632 } 633 else if(strcmp(opt, "infra-cache-max-rtt:") == 0) { 634 IS_NUMBER_OR_ZERO; cfg->infra_cache_max_rtt = atoi(val); 635 RTT_MAX_TIMEOUT=cfg->infra_cache_max_rtt; 636 USEFUL_SERVER_TOP_TIMEOUT = RTT_MAX_TIMEOUT; 637 BLACKLIST_PENALTY = USEFUL_SERVER_TOP_TIMEOUT*4; 638 } 639 else S_YNO("infra-keep-probing:", infra_keep_probing) 640 else S_NUMBER_OR_ZERO("infra-host-ttl:", host_ttl) 641 else S_POW2("infra-cache-slabs:", infra_cache_slabs) 642 else S_SIZET_NONZERO("infra-cache-numhosts:", infra_cache_numhosts) 643 else S_NUMBER_OR_ZERO("delay-close:", delay_close) 644 else S_YNO("udp-connect:", udp_connect) 645 else S_STR("chroot:", chrootdir) 646 else S_STR("username:", username) 647 else S_STR("directory:", directory) 648 else S_STR("pidfile:", pidfile) 649 else S_YNO("hide-identity:", hide_identity) 650 else S_YNO("hide-version:", hide_version) 651 else S_YNO("hide-trustanchor:", hide_trustanchor) 652 else S_YNO("hide-http-user-agent:", hide_http_user_agent) 653 else S_STR("identity:", identity) 654 else S_STR("version:", version) 655 else S_STR("http-user-agent:", http_user_agent) 656 else if(strcmp(opt, "nsid:") == 0) { 657 free(cfg->nsid_cfg_str); 658 if (!(cfg->nsid_cfg_str = strdup(val))) 659 return 0; 660 /* Empty string is just validly unsetting nsid */ 661 if (*val == 0) { 662 free(cfg->nsid); 663 cfg->nsid = NULL; 664 cfg->nsid_len = 0; 665 return 1; 666 } 667 cfg->nsid = cfg_parse_nsid(val, &cfg->nsid_len); 668 return cfg->nsid != NULL; 669 } 670 else S_STRLIST("root-hints:", root_hints) 671 else S_STR("target-fetch-policy:", target_fetch_policy) 672 else S_YNO("harden-glue:", harden_glue) 673 else S_YNO("harden-short-bufsize:", harden_short_bufsize) 674 else S_YNO("harden-large-queries:", harden_large_queries) 675 else S_YNO("harden-dnssec-stripped:", harden_dnssec_stripped) 676 else S_YNO("harden-below-nxdomain:", harden_below_nxdomain) 677 else S_YNO("harden-referral-path:", harden_referral_path) 678 else S_YNO("harden-algo-downgrade:", harden_algo_downgrade) 679 else S_YNO("harden-unknown-additional:", harden_unknown_additional) 680 else S_YNO("use-caps-for-id:", use_caps_bits_for_id) 681 else S_STRLIST("caps-whitelist:", caps_whitelist) 682 else S_SIZET_OR_ZERO("unwanted-reply-threshold:", unwanted_threshold) 683 else S_STRLIST("private-address:", private_address) 684 else S_STRLIST("private-domain:", private_domain) 685 else S_YNO("do-not-query-localhost:", donotquery_localhost) 686 else S_STRLIST("do-not-query-address:", donotqueryaddrs) 687 else S_STRLIST("auto-trust-anchor-file:", auto_trust_anchor_file_list) 688 else S_STRLIST("trust-anchor-file:", trust_anchor_file_list) 689 else S_STRLIST("trust-anchor:", trust_anchor_list) 690 else S_STRLIST("trusted-keys-file:", trusted_keys_file_list) 691 else S_YNO("trust-anchor-signaling:", trust_anchor_signaling) 692 else S_YNO("root-key-sentinel:", root_key_sentinel) 693 else S_STRLIST("domain-insecure:", domain_insecure) 694 else S_NUMBER_OR_ZERO("val-bogus-ttl:", bogus_ttl) 695 else S_YNO("val-clean-additional:", val_clean_additional) 696 else S_NUMBER_OR_ZERO("val-log-level:", val_log_level) 697 else S_YNO("val-log-squelch:", val_log_squelch) 698 else S_YNO("log-queries:", log_queries) 699 else S_YNO("log-replies:", log_replies) 700 else S_YNO("log-tag-queryreply:", log_tag_queryreply) 701 else S_YNO("log-local-actions:", log_local_actions) 702 else S_YNO("log-servfail:", log_servfail) 703 else S_YNO("log-destaddr:", log_destaddr) 704 else S_YNO("val-permissive-mode:", val_permissive_mode) 705 else S_YNO("aggressive-nsec:", aggressive_nsec) 706 else S_YNO("ignore-cd-flag:", ignore_cd) 707 else S_YNO("disable-edns-do:", disable_edns_do) 708 else if(strcmp(opt, "serve-expired:") == 0) 709 { IS_YES_OR_NO; cfg->serve_expired = (strcmp(val, "yes") == 0); 710 SERVE_EXPIRED = cfg->serve_expired; } 711 else if(strcmp(opt, "serve-expired-ttl:") == 0) 712 { IS_NUMBER_OR_ZERO; cfg->serve_expired_ttl = atoi(val); SERVE_EXPIRED_TTL=(time_t)cfg->serve_expired_ttl;} 713 else S_YNO("serve-expired-ttl-reset:", serve_expired_ttl_reset) 714 else if(strcmp(opt, "serve-expired-reply-ttl:") == 0) 715 { IS_NUMBER_OR_ZERO; cfg->serve_expired_reply_ttl = atoi(val); SERVE_EXPIRED_REPLY_TTL=(time_t)cfg->serve_expired_reply_ttl;} 716 else S_NUMBER_OR_ZERO("serve-expired-client-timeout:", serve_expired_client_timeout) 717 else S_YNO("ede:", ede) 718 else S_YNO("ede-serve-expired:", ede_serve_expired) 719 else S_YNO("serve-original-ttl:", serve_original_ttl) 720 else S_STR("val-nsec3-keysize-iterations:", val_nsec3_key_iterations) 721 else S_YNO("zonemd-permissive-mode:", zonemd_permissive_mode) 722 else S_UNSIGNED_OR_ZERO("add-holddown:", add_holddown) 723 else S_UNSIGNED_OR_ZERO("del-holddown:", del_holddown) 724 else S_UNSIGNED_OR_ZERO("keep-missing:", keep_missing) 725 else if(strcmp(opt, "permit-small-holddown:") == 0) 726 { IS_YES_OR_NO; cfg->permit_small_holddown = (strcmp(val, "yes") == 0); 727 autr_permit_small_holddown = cfg->permit_small_holddown; } 728 else S_MEMSIZE("key-cache-size:", key_cache_size) 729 else S_POW2("key-cache-slabs:", key_cache_slabs) 730 else S_MEMSIZE("neg-cache-size:", neg_cache_size) 731 else S_YNO("minimal-responses:", minimal_responses) 732 else S_YNO("rrset-roundrobin:", rrset_roundrobin) 733 else S_NUMBER_OR_ZERO("unknown-server-time-limit:", unknown_server_time_limit) 734 else S_NUMBER_OR_ZERO("discard-timeout:", discard_timeout) 735 else S_NUMBER_OR_ZERO("wait-limit:", wait_limit) 736 else S_NUMBER_OR_ZERO("wait-limit-cookie:", wait_limit_cookie) 737 else S_STRLIST("local-data:", local_data) 738 else S_YNO("unblock-lan-zones:", unblock_lan_zones) 739 else S_YNO("insecure-lan-zones:", insecure_lan_zones) 740 else S_YNO("control-enable:", remote_control_enable) 741 else S_STRLIST_APPEND("control-interface:", control_ifs) 742 else S_NUMBER_NONZERO("control-port:", control_port) 743 else S_STR("server-key-file:", server_key_file) 744 else S_STR("server-cert-file:", server_cert_file) 745 else S_STR("control-key-file:", control_key_file) 746 else S_STR("control-cert-file:", control_cert_file) 747 else S_STR("module-config:", module_conf) 748 else S_STRLIST("python-script:", python_script) 749 else S_STRLIST("dynlib-file:", dynlib_file) 750 else S_YNO("disable-dnssec-lame-check:", disable_dnssec_lame_check) 751 #ifdef CLIENT_SUBNET 752 /* Can't set max subnet prefix here, since that value is used when 753 * generating the address tree. */ 754 /* No client-subnet-always-forward here, module registration depends on 755 * this option. */ 756 #endif 757 #ifdef USE_DNSTAP 758 else S_YNO("dnstap-enable:", dnstap) 759 else S_YNO("dnstap-bidirectional:", dnstap_bidirectional) 760 else S_STR("dnstap-socket-path:", dnstap_socket_path) 761 else S_STR("dnstap-ip:", dnstap_ip) 762 else S_YNO("dnstap-tls:", dnstap_tls) 763 else S_STR("dnstap-tls-server-name:", dnstap_tls_server_name) 764 else S_STR("dnstap-tls-cert-bundle:", dnstap_tls_cert_bundle) 765 else S_STR("dnstap-tls-client-key-file:", dnstap_tls_client_key_file) 766 else S_STR("dnstap-tls-client-cert-file:", 767 dnstap_tls_client_cert_file) 768 else S_YNO("dnstap-send-identity:", dnstap_send_identity) 769 else S_YNO("dnstap-send-version:", dnstap_send_version) 770 else S_STR("dnstap-identity:", dnstap_identity) 771 else S_STR("dnstap-version:", dnstap_version) 772 else S_YNO("dnstap-log-resolver-query-messages:", 773 dnstap_log_resolver_query_messages) 774 else S_YNO("dnstap-log-resolver-response-messages:", 775 dnstap_log_resolver_response_messages) 776 else S_YNO("dnstap-log-client-query-messages:", 777 dnstap_log_client_query_messages) 778 else S_YNO("dnstap-log-client-response-messages:", 779 dnstap_log_client_response_messages) 780 else S_YNO("dnstap-log-forwarder-query-messages:", 781 dnstap_log_forwarder_query_messages) 782 else S_YNO("dnstap-log-forwarder-response-messages:", 783 dnstap_log_forwarder_response_messages) 784 #endif 785 #ifdef USE_DNSCRYPT 786 else S_YNO("dnscrypt-enable:", dnscrypt) 787 else S_NUMBER_NONZERO("dnscrypt-port:", dnscrypt_port) 788 else S_STR("dnscrypt-provider:", dnscrypt_provider) 789 else S_STRLIST_UNIQ("dnscrypt-provider-cert:", dnscrypt_provider_cert) 790 else S_STRLIST("dnscrypt-provider-cert-rotated:", dnscrypt_provider_cert_rotated) 791 else S_STRLIST_UNIQ("dnscrypt-secret-key:", dnscrypt_secret_key) 792 else S_MEMSIZE("dnscrypt-shared-secret-cache-size:", 793 dnscrypt_shared_secret_cache_size) 794 else S_POW2("dnscrypt-shared-secret-cache-slabs:", 795 dnscrypt_shared_secret_cache_slabs) 796 else S_MEMSIZE("dnscrypt-nonce-cache-size:", 797 dnscrypt_nonce_cache_size) 798 else S_POW2("dnscrypt-nonce-cache-slabs:", 799 dnscrypt_nonce_cache_slabs) 800 #endif 801 else if(strcmp(opt, "ip-ratelimit-cookie:") == 0) { 802 IS_NUMBER_OR_ZERO; cfg->ip_ratelimit_cookie = atoi(val); 803 infra_ip_ratelimit_cookie=cfg->ip_ratelimit_cookie; 804 } 805 else if(strcmp(opt, "ip-ratelimit:") == 0) { 806 IS_NUMBER_OR_ZERO; cfg->ip_ratelimit = atoi(val); 807 infra_ip_ratelimit=cfg->ip_ratelimit; 808 } 809 else if(strcmp(opt, "ratelimit:") == 0) { 810 IS_NUMBER_OR_ZERO; cfg->ratelimit = atoi(val); 811 infra_dp_ratelimit=cfg->ratelimit; 812 } 813 else S_MEMSIZE("ip-ratelimit-size:", ip_ratelimit_size) 814 else S_MEMSIZE("ratelimit-size:", ratelimit_size) 815 else S_POW2("ip-ratelimit-slabs:", ip_ratelimit_slabs) 816 else S_POW2("ratelimit-slabs:", ratelimit_slabs) 817 else S_NUMBER_OR_ZERO("ip-ratelimit-factor:", ip_ratelimit_factor) 818 else S_NUMBER_OR_ZERO("ratelimit-factor:", ratelimit_factor) 819 else S_YNO("ip-ratelimit-backoff:", ip_ratelimit_backoff) 820 else S_YNO("ratelimit-backoff:", ratelimit_backoff) 821 else S_NUMBER_NONZERO("outbound-msg-retry:", outbound_msg_retry) 822 else S_NUMBER_NONZERO("max-sent-count:", max_sent_count) 823 else S_NUMBER_NONZERO("max-query-restarts:", max_query_restarts) 824 else S_SIZET_NONZERO("fast-server-num:", fast_server_num) 825 else S_NUMBER_OR_ZERO("fast-server-permil:", fast_server_permil) 826 else S_YNO("qname-minimisation:", qname_minimisation) 827 else S_YNO("qname-minimisation-strict:", qname_minimisation_strict) 828 else S_YNO("pad-responses:", pad_responses) 829 else S_SIZET_NONZERO("pad-responses-block-size:", pad_responses_block_size) 830 else S_YNO("pad-queries:", pad_queries) 831 else S_SIZET_NONZERO("pad-queries-block-size:", pad_queries_block_size) 832 else S_STRLIST("proxy-protocol-port:", proxy_protocol_port) 833 #ifdef USE_IPSECMOD 834 else S_YNO("ipsecmod-enabled:", ipsecmod_enabled) 835 else S_YNO("ipsecmod-ignore-bogus:", ipsecmod_ignore_bogus) 836 else if(strcmp(opt, "ipsecmod-max-ttl:") == 0) 837 { IS_NUMBER_OR_ZERO; cfg->ipsecmod_max_ttl = atoi(val); } 838 else S_YNO("ipsecmod-strict:", ipsecmod_strict) 839 #endif 840 #ifdef USE_CACHEDB 841 else S_YNO("cachedb-no-store:", cachedb_no_store) 842 else S_YNO("cachedb-check-when-serve-expired:", cachedb_check_when_serve_expired) 843 #endif /* USE_CACHEDB */ 844 else if(strcmp(opt, "define-tag:") ==0) { 845 return config_add_tag(cfg, val); 846 /* val_sig_skew_min, max and val_max_restart are copied into val_env 847 * during init so this does not update val_env with set_option */ 848 } else if(strcmp(opt, "val-sig-skew-min:") == 0) 849 { IS_NUMBER_OR_ZERO; cfg->val_sig_skew_min = (int32_t)atoi(val); } 850 else if(strcmp(opt, "val-sig-skew-max:") == 0) 851 { IS_NUMBER_OR_ZERO; cfg->val_sig_skew_max = (int32_t)atoi(val); } 852 else if(strcmp(opt, "val-max-restart:") == 0) 853 { IS_NUMBER_OR_ZERO; cfg->val_max_restart = (int32_t)atoi(val); } 854 else if (strcmp(opt, "outgoing-interface:") == 0) { 855 char* d = strdup(val); 856 char** oi = 857 (char**)reallocarray(NULL, (size_t)cfg->num_out_ifs+1, sizeof(char*)); 858 if(!d || !oi) { free(d); free(oi); return -1; } 859 if(cfg->out_ifs && cfg->num_out_ifs) { 860 memmove(oi, cfg->out_ifs, cfg->num_out_ifs*sizeof(char*)); 861 free(cfg->out_ifs); 862 } 863 oi[cfg->num_out_ifs++] = d; 864 cfg->out_ifs = oi; 865 } else { 866 /* unknown or unsupported (from the set_option interface): 867 * interface, outgoing-interface, access-control, 868 * stub-zone, name, stub-addr, stub-host, stub-prime 869 * forward-first, stub-first, forward-ssl-upstream, 870 * stub-ssl-upstream, forward-zone, auth-zone 871 * name, forward-addr, forward-host, 872 * ratelimit-for-domain, ratelimit-below-domain, 873 * local-zone-tag, access-control-view, interface-*, 874 * send-client-subnet, client-subnet-always-forward, 875 * max-client-subnet-ipv4, max-client-subnet-ipv6, 876 * min-client-subnet-ipv4, min-client-subnet-ipv6, 877 * max-ecs-tree-size-ipv4, max-ecs-tree-size-ipv6, ipsecmod_hook, 878 * ipsecmod_whitelist. */ 879 return 0; 880 } 881 return 1; 882 } 883 884 void config_print_func(char* line, void* arg) 885 { 886 FILE* f = (FILE*)arg; 887 (void)fprintf(f, "%s\n", line); 888 } 889 890 /** collate func arg */ 891 struct config_collate_arg { 892 /** list of result items */ 893 struct config_strlist_head list; 894 /** if a malloc error occurred, 0 is OK */ 895 int status; 896 }; 897 898 void config_collate_func(char* line, void* arg) 899 { 900 struct config_collate_arg* m = (struct config_collate_arg*)arg; 901 if(m->status) 902 return; 903 if(!cfg_strlist_append(&m->list, strdup(line))) 904 m->status = 1; 905 } 906 907 int config_get_option_list(struct config_file* cfg, const char* opt, 908 struct config_strlist** list) 909 { 910 struct config_collate_arg m; 911 memset(&m, 0, sizeof(m)); 912 *list = NULL; 913 if(!config_get_option(cfg, opt, config_collate_func, &m)) 914 return 1; 915 if(m.status) { 916 config_delstrlist(m.list.first); 917 return 2; 918 } 919 *list = m.list.first; 920 return 0; 921 } 922 923 int 924 config_get_option_collate(struct config_file* cfg, const char* opt, char** str) 925 { 926 struct config_strlist* list = NULL; 927 int r; 928 *str = NULL; 929 if((r = config_get_option_list(cfg, opt, &list)) != 0) 930 return r; 931 *str = config_collate_cat(list); 932 config_delstrlist(list); 933 if(!*str) return 2; 934 return 0; 935 } 936 937 char* 938 config_collate_cat(struct config_strlist* list) 939 { 940 size_t total = 0, left; 941 struct config_strlist* s; 942 char *r, *w; 943 if(!list) /* no elements */ 944 return strdup(""); 945 if(list->next == NULL) /* one element , no newline at end. */ 946 return strdup(list->str); 947 /* count total length */ 948 for(s=list; s; s=s->next) 949 total += strlen(s->str) + 1; /* len + newline */ 950 left = total+1; /* one extra for nul at end */ 951 r = malloc(left); 952 if(!r) 953 return NULL; 954 w = r; 955 for(s=list; s; s=s->next) { 956 size_t this = strlen(s->str); 957 if(this+2 > left) { /* sanity check */ 958 free(r); 959 return NULL; 960 } 961 snprintf(w, left, "%s\n", s->str); 962 this = strlen(w); 963 w += this; 964 left -= this; 965 } 966 return r; 967 } 968 969 /** compare and print decimal option */ 970 #define O_DEC(opt, str, var) if(strcmp(opt, str)==0) \ 971 {snprintf(buf, len, "%d", (int)cfg->var); \ 972 func(buf, arg);} 973 /** compare and print unsigned option */ 974 #define O_UNS(opt, str, var) if(strcmp(opt, str)==0) \ 975 {snprintf(buf, len, "%u", (unsigned)cfg->var); \ 976 func(buf, arg);} 977 /** compare and print yesno option */ 978 #define O_YNO(opt, str, var) if(strcmp(opt, str)==0) \ 979 {func(cfg->var?"yes":"no", arg);} 980 /** compare and print string option */ 981 #define O_STR(opt, str, var) if(strcmp(opt, str)==0) \ 982 {func(cfg->var?cfg->var:"", arg);} 983 /** compare and print array option */ 984 #define O_IFC(opt, str, num, arr) if(strcmp(opt, str)==0) \ 985 {int i; for(i=0; i<cfg->num; i++) func(cfg->arr[i], arg);} 986 /** compare and print memorysize option */ 987 #define O_MEM(opt, str, var) if(strcmp(opt, str)==0) { \ 988 if(cfg->var > 1024*1024*1024) { \ 989 size_t f=cfg->var/(size_t)1000000, b=cfg->var%(size_t)1000000; \ 990 snprintf(buf, len, "%u%6.6u", (unsigned)f, (unsigned)b); \ 991 } else snprintf(buf, len, "%u", (unsigned)cfg->var); \ 992 func(buf, arg);} 993 /** compare and print list option */ 994 #define O_LST(opt, name, lst) if(strcmp(opt, name)==0) { \ 995 struct config_strlist* p = cfg->lst; \ 996 for(p = cfg->lst; p; p = p->next) \ 997 func(p->str, arg); \ 998 } 999 /** compare and print list option */ 1000 #define O_LS2(opt, name, lst) if(strcmp(opt, name)==0) { \ 1001 struct config_str2list* p = cfg->lst; \ 1002 for(p = cfg->lst; p; p = p->next) { \ 1003 snprintf(buf, len, "%s %s", p->str, p->str2); \ 1004 func(buf, arg); \ 1005 } \ 1006 } 1007 /** compare and print list option */ 1008 #define O_LS3(opt, name, lst) if(strcmp(opt, name)==0) { \ 1009 struct config_str3list* p = cfg->lst; \ 1010 for(p = cfg->lst; p; p = p->next) { \ 1011 snprintf(buf, len, "%s %s %s", p->str, p->str2, p->str3); \ 1012 func(buf, arg); \ 1013 } \ 1014 } 1015 /** compare and print taglist option */ 1016 #define O_LTG(opt, name, lst) if(strcmp(opt, name)==0) { \ 1017 char* tmpstr = NULL; \ 1018 struct config_strbytelist *p = cfg->lst; \ 1019 for(p = cfg->lst; p; p = p->next) {\ 1020 tmpstr = config_taglist2str(cfg, p->str2, p->str2len); \ 1021 if(tmpstr) {\ 1022 snprintf(buf, len, "%s %s", p->str, tmpstr); \ 1023 func(buf, arg); \ 1024 free(tmpstr); \ 1025 } \ 1026 } \ 1027 } 1028 1029 int 1030 config_get_option(struct config_file* cfg, const char* opt, 1031 void (*func)(char*,void*), void* arg) 1032 { 1033 char buf[1024], nopt[64]; 1034 size_t len = sizeof(buf); 1035 if(!opt) return 0; 1036 if(opt && opt[strlen(opt)-1] == ':' && strlen(opt)<sizeof(nopt)) { 1037 memmove(nopt, opt, strlen(opt)); 1038 nopt[strlen(opt)-1] = 0; 1039 opt = nopt; 1040 } 1041 fptr_ok(fptr_whitelist_print_func(func)); 1042 O_DEC(opt, "verbosity", verbosity) 1043 else O_DEC(opt, "statistics-interval", stat_interval) 1044 else O_YNO(opt, "statistics-cumulative", stat_cumulative) 1045 else O_YNO(opt, "extended-statistics", stat_extended) 1046 else O_YNO(opt, "statistics-inhibit-zero", stat_inhibit_zero) 1047 else O_YNO(opt, "shm-enable", shm_enable) 1048 else O_DEC(opt, "shm-key", shm_key) 1049 else O_YNO(opt, "use-syslog", use_syslog) 1050 else O_STR(opt, "log-identity", log_identity) 1051 else O_YNO(opt, "log-time-ascii", log_time_ascii) 1052 else O_DEC(opt, "num-threads", num_threads) 1053 else O_IFC(opt, "interface", num_ifs, ifs) 1054 else O_IFC(opt, "outgoing-interface", num_out_ifs, out_ifs) 1055 else O_YNO(opt, "interface-automatic", if_automatic) 1056 else O_STR(opt, "interface-automatic-ports", if_automatic_ports) 1057 else O_DEC(opt, "port", port) 1058 else O_DEC(opt, "outgoing-range", outgoing_num_ports) 1059 else O_DEC(opt, "outgoing-num-tcp", outgoing_num_tcp) 1060 else O_DEC(opt, "incoming-num-tcp", incoming_num_tcp) 1061 else O_MEM(opt, "stream-wait-size", stream_wait_size) 1062 else O_DEC(opt, "edns-buffer-size", edns_buffer_size) 1063 else O_DEC(opt, "msg-buffer-size", msg_buffer_size) 1064 else O_MEM(opt, "msg-cache-size", msg_cache_size) 1065 else O_DEC(opt, "msg-cache-slabs", msg_cache_slabs) 1066 else O_DEC(opt, "num-queries-per-thread", num_queries_per_thread) 1067 else O_UNS(opt, "jostle-timeout", jostle_time) 1068 else O_MEM(opt, "so-rcvbuf", so_rcvbuf) 1069 else O_MEM(opt, "so-sndbuf", so_sndbuf) 1070 else O_YNO(opt, "so-reuseport", so_reuseport) 1071 else O_YNO(opt, "ip-transparent", ip_transparent) 1072 else O_YNO(opt, "ip-freebind", ip_freebind) 1073 else O_DEC(opt, "ip-dscp", ip_dscp) 1074 else O_MEM(opt, "rrset-cache-size", rrset_cache_size) 1075 else O_DEC(opt, "rrset-cache-slabs", rrset_cache_slabs) 1076 else O_YNO(opt, "prefetch-key", prefetch_key) 1077 else O_YNO(opt, "prefetch", prefetch) 1078 else O_YNO(opt, "deny-any", deny_any) 1079 else O_DEC(opt, "cache-max-ttl", max_ttl) 1080 else O_DEC(opt, "cache-max-negative-ttl", max_negative_ttl) 1081 else O_DEC(opt, "cache-min-negative-ttl", min_negative_ttl) 1082 else O_DEC(opt, "cache-min-ttl", min_ttl) 1083 else O_DEC(opt, "infra-host-ttl", host_ttl) 1084 else O_DEC(opt, "infra-cache-slabs", infra_cache_slabs) 1085 else O_DEC(opt, "infra-cache-min-rtt", infra_cache_min_rtt) 1086 else O_UNS(opt, "infra-cache-max-rtt", infra_cache_max_rtt) 1087 else O_YNO(opt, "infra-keep-probing", infra_keep_probing) 1088 else O_MEM(opt, "infra-cache-numhosts", infra_cache_numhosts) 1089 else O_UNS(opt, "delay-close", delay_close) 1090 else O_YNO(opt, "udp-connect", udp_connect) 1091 else O_YNO(opt, "do-ip4", do_ip4) 1092 else O_YNO(opt, "do-ip6", do_ip6) 1093 else O_YNO(opt, "do-udp", do_udp) 1094 else O_YNO(opt, "do-tcp", do_tcp) 1095 else O_YNO(opt, "prefer-ip4", prefer_ip4) 1096 else O_YNO(opt, "prefer-ip6", prefer_ip6) 1097 else O_YNO(opt, "tcp-upstream", tcp_upstream) 1098 else O_YNO(opt, "udp-upstream-without-downstream", udp_upstream_without_downstream) 1099 else O_DEC(opt, "tcp-mss", tcp_mss) 1100 else O_DEC(opt, "outgoing-tcp-mss", outgoing_tcp_mss) 1101 else O_DEC(opt, "tcp-auth-query-timeout", tcp_auth_query_timeout) 1102 else O_DEC(opt, "tcp-idle-timeout", tcp_idle_timeout) 1103 else O_DEC(opt, "max-reuse-tcp-queries", max_reuse_tcp_queries) 1104 else O_DEC(opt, "tcp-reuse-timeout", tcp_reuse_timeout) 1105 else O_YNO(opt, "edns-tcp-keepalive", do_tcp_keepalive) 1106 else O_DEC(opt, "edns-tcp-keepalive-timeout", tcp_keepalive_timeout) 1107 else O_DEC(opt, "sock-queue-timeout", sock_queue_timeout) 1108 else O_YNO(opt, "ssl-upstream", ssl_upstream) 1109 else O_YNO(opt, "tls-upstream", ssl_upstream) 1110 else O_STR(opt, "ssl-service-key", ssl_service_key) 1111 else O_STR(opt, "tls-service-key", ssl_service_key) 1112 else O_STR(opt, "ssl-service-pem", ssl_service_pem) 1113 else O_STR(opt, "tls-service-pem", ssl_service_pem) 1114 else O_DEC(opt, "ssl-port", ssl_port) 1115 else O_DEC(opt, "tls-port", ssl_port) 1116 else O_STR(opt, "ssl-cert-bundle", tls_cert_bundle) 1117 else O_STR(opt, "tls-cert-bundle", tls_cert_bundle) 1118 else O_YNO(opt, "tls-win-cert", tls_win_cert) 1119 else O_YNO(opt, "tls-system-cert", tls_win_cert) 1120 else O_LST(opt, "additional-ssl-port", tls_additional_port) 1121 else O_LST(opt, "additional-tls-port", tls_additional_port) 1122 else O_LST(opt, "tls-additional-ports", tls_additional_port) 1123 else O_LST(opt, "tls-additional-port", tls_additional_port) 1124 else O_LST(opt, "tls-session-ticket-keys", tls_session_ticket_keys.first) 1125 else O_STR(opt, "tls-ciphers", tls_ciphers) 1126 else O_STR(opt, "tls-ciphersuites", tls_ciphersuites) 1127 else O_YNO(opt, "tls-use-sni", tls_use_sni) 1128 else O_DEC(opt, "https-port", https_port) 1129 else O_STR(opt, "http-endpoint", http_endpoint) 1130 else O_UNS(opt, "http-max-streams", http_max_streams) 1131 else O_MEM(opt, "http-query-buffer-size", http_query_buffer_size) 1132 else O_MEM(opt, "http-response-buffer-size", http_response_buffer_size) 1133 else O_YNO(opt, "http-nodelay", http_nodelay) 1134 else O_YNO(opt, "http-notls-downstream", http_notls_downstream) 1135 else O_YNO(opt, "use-systemd", use_systemd) 1136 else O_YNO(opt, "do-daemonize", do_daemonize) 1137 else O_STR(opt, "chroot", chrootdir) 1138 else O_STR(opt, "username", username) 1139 else O_STR(opt, "directory", directory) 1140 else O_STR(opt, "logfile", logfile) 1141 else O_YNO(opt, "log-queries", log_queries) 1142 else O_YNO(opt, "log-replies", log_replies) 1143 else O_YNO(opt, "log-tag-queryreply", log_tag_queryreply) 1144 else O_YNO(opt, "log-local-actions", log_local_actions) 1145 else O_YNO(opt, "log-servfail", log_servfail) 1146 else O_YNO(opt, "log-destaddr", log_destaddr) 1147 else O_STR(opt, "pidfile", pidfile) 1148 else O_YNO(opt, "hide-identity", hide_identity) 1149 else O_YNO(opt, "hide-version", hide_version) 1150 else O_YNO(opt, "hide-trustanchor", hide_trustanchor) 1151 else O_YNO(opt, "hide-http-user-agent", hide_http_user_agent) 1152 else O_STR(opt, "identity", identity) 1153 else O_STR(opt, "version", version) 1154 else O_STR(opt, "http-user-agent", http_user_agent) 1155 else O_STR(opt, "nsid", nsid_cfg_str) 1156 else O_STR(opt, "target-fetch-policy", target_fetch_policy) 1157 else O_YNO(opt, "harden-short-bufsize", harden_short_bufsize) 1158 else O_YNO(opt, "harden-large-queries", harden_large_queries) 1159 else O_YNO(opt, "harden-glue", harden_glue) 1160 else O_YNO(opt, "harden-dnssec-stripped", harden_dnssec_stripped) 1161 else O_YNO(opt, "harden-below-nxdomain", harden_below_nxdomain) 1162 else O_YNO(opt, "harden-referral-path", harden_referral_path) 1163 else O_YNO(opt, "harden-algo-downgrade", harden_algo_downgrade) 1164 else O_YNO(opt, "harden-unknown-additional", harden_unknown_additional) 1165 else O_YNO(opt, "use-caps-for-id", use_caps_bits_for_id) 1166 else O_LST(opt, "caps-whitelist", caps_whitelist) 1167 else O_DEC(opt, "unwanted-reply-threshold", unwanted_threshold) 1168 else O_YNO(opt, "do-not-query-localhost", donotquery_localhost) 1169 else O_STR(opt, "module-config", module_conf) 1170 else O_DEC(opt, "val-bogus-ttl", bogus_ttl) 1171 else O_YNO(opt, "val-clean-additional", val_clean_additional) 1172 else O_DEC(opt, "val-log-level", val_log_level) 1173 else O_YNO(opt, "val-permissive-mode", val_permissive_mode) 1174 else O_YNO(opt, "aggressive-nsec", aggressive_nsec) 1175 else O_YNO(opt, "ignore-cd-flag", ignore_cd) 1176 else O_YNO(opt, "disable-edns-do", disable_edns_do) 1177 else O_YNO(opt, "serve-expired", serve_expired) 1178 else O_DEC(opt, "serve-expired-ttl", serve_expired_ttl) 1179 else O_YNO(opt, "serve-expired-ttl-reset", serve_expired_ttl_reset) 1180 else O_DEC(opt, "serve-expired-reply-ttl", serve_expired_reply_ttl) 1181 else O_DEC(opt, "serve-expired-client-timeout", serve_expired_client_timeout) 1182 else O_YNO(opt, "ede", ede) 1183 else O_YNO(opt, "ede-serve-expired", ede_serve_expired) 1184 else O_YNO(opt, "serve-original-ttl", serve_original_ttl) 1185 else O_STR(opt, "val-nsec3-keysize-iterations",val_nsec3_key_iterations) 1186 else O_YNO(opt, "zonemd-permissive-mode", zonemd_permissive_mode) 1187 else O_UNS(opt, "add-holddown", add_holddown) 1188 else O_UNS(opt, "del-holddown", del_holddown) 1189 else O_UNS(opt, "keep-missing", keep_missing) 1190 else O_YNO(opt, "permit-small-holddown", permit_small_holddown) 1191 else O_MEM(opt, "key-cache-size", key_cache_size) 1192 else O_DEC(opt, "key-cache-slabs", key_cache_slabs) 1193 else O_MEM(opt, "neg-cache-size", neg_cache_size) 1194 else O_YNO(opt, "control-enable", remote_control_enable) 1195 else O_DEC(opt, "control-port", control_port) 1196 else O_STR(opt, "server-key-file", server_key_file) 1197 else O_STR(opt, "server-cert-file", server_cert_file) 1198 else O_STR(opt, "control-key-file", control_key_file) 1199 else O_STR(opt, "control-cert-file", control_cert_file) 1200 else O_LST(opt, "root-hints", root_hints) 1201 else O_LS2(opt, "access-control", acls) 1202 else O_LS2(opt, "tcp-connection-limit", tcp_connection_limits) 1203 else O_LST(opt, "do-not-query-address", donotqueryaddrs) 1204 else O_LST(opt, "private-address", private_address) 1205 else O_LST(opt, "private-domain", private_domain) 1206 else O_LST(opt, "auto-trust-anchor-file", auto_trust_anchor_file_list) 1207 else O_LST(opt, "trust-anchor-file", trust_anchor_file_list) 1208 else O_LST(opt, "trust-anchor", trust_anchor_list) 1209 else O_LST(opt, "trusted-keys-file", trusted_keys_file_list) 1210 else O_YNO(opt, "trust-anchor-signaling", trust_anchor_signaling) 1211 else O_YNO(opt, "root-key-sentinel", root_key_sentinel) 1212 else O_LST(opt, "control-interface", control_ifs.first) 1213 else O_LST(opt, "domain-insecure", domain_insecure) 1214 else O_UNS(opt, "val-override-date", val_date_override) 1215 else O_YNO(opt, "minimal-responses", minimal_responses) 1216 else O_YNO(opt, "rrset-roundrobin", rrset_roundrobin) 1217 else O_DEC(opt, "unknown-server-time-limit", unknown_server_time_limit) 1218 else O_DEC(opt, "discard-timeout", discard_timeout) 1219 else O_DEC(opt, "wait-limit", wait_limit) 1220 else O_DEC(opt, "wait-limit-cookie", wait_limit_cookie) 1221 else O_LS2(opt, "wait-limit-netblock", wait_limit_netblock) 1222 else O_LS2(opt, "wait-limit-cookie-netblock", wait_limit_cookie_netblock) 1223 #ifdef CLIENT_SUBNET 1224 else O_LST(opt, "send-client-subnet", client_subnet) 1225 else O_LST(opt, "client-subnet-zone", client_subnet_zone) 1226 else O_DEC(opt, "max-client-subnet-ipv4", max_client_subnet_ipv4) 1227 else O_DEC(opt, "max-client-subnet-ipv6", max_client_subnet_ipv6) 1228 else O_DEC(opt, "min-client-subnet-ipv4", min_client_subnet_ipv4) 1229 else O_DEC(opt, "min-client-subnet-ipv6", min_client_subnet_ipv6) 1230 else O_DEC(opt, "max-ecs-tree-size-ipv4", max_ecs_tree_size_ipv4) 1231 else O_DEC(opt, "max-ecs-tree-size-ipv6", max_ecs_tree_size_ipv6) 1232 else O_YNO(opt, "client-subnet-always-forward:", 1233 client_subnet_always_forward) 1234 #endif 1235 #ifdef USE_DNSTAP 1236 else O_YNO(opt, "dnstap-enable", dnstap) 1237 else O_YNO(opt, "dnstap-bidirectional", dnstap_bidirectional) 1238 else O_STR(opt, "dnstap-socket-path", dnstap_socket_path) 1239 else O_STR(opt, "dnstap-ip", dnstap_ip) 1240 else O_YNO(opt, "dnstap-tls", dnstap_tls) 1241 else O_STR(opt, "dnstap-tls-server-name", dnstap_tls_server_name) 1242 else O_STR(opt, "dnstap-tls-cert-bundle", dnstap_tls_cert_bundle) 1243 else O_STR(opt, "dnstap-tls-client-key-file", 1244 dnstap_tls_client_key_file) 1245 else O_STR(opt, "dnstap-tls-client-cert-file", 1246 dnstap_tls_client_cert_file) 1247 else O_YNO(opt, "dnstap-send-identity", dnstap_send_identity) 1248 else O_YNO(opt, "dnstap-send-version", dnstap_send_version) 1249 else O_STR(opt, "dnstap-identity", dnstap_identity) 1250 else O_STR(opt, "dnstap-version", dnstap_version) 1251 else O_YNO(opt, "dnstap-log-resolver-query-messages", 1252 dnstap_log_resolver_query_messages) 1253 else O_YNO(opt, "dnstap-log-resolver-response-messages", 1254 dnstap_log_resolver_response_messages) 1255 else O_YNO(opt, "dnstap-log-client-query-messages", 1256 dnstap_log_client_query_messages) 1257 else O_YNO(opt, "dnstap-log-client-response-messages", 1258 dnstap_log_client_response_messages) 1259 else O_YNO(opt, "dnstap-log-forwarder-query-messages", 1260 dnstap_log_forwarder_query_messages) 1261 else O_YNO(opt, "dnstap-log-forwarder-response-messages", 1262 dnstap_log_forwarder_response_messages) 1263 #endif 1264 #ifdef USE_DNSCRYPT 1265 else O_YNO(opt, "dnscrypt-enable", dnscrypt) 1266 else O_DEC(opt, "dnscrypt-port", dnscrypt_port) 1267 else O_STR(opt, "dnscrypt-provider", dnscrypt_provider) 1268 else O_LST(opt, "dnscrypt-provider-cert", dnscrypt_provider_cert) 1269 else O_LST(opt, "dnscrypt-provider-cert-rotated", dnscrypt_provider_cert_rotated) 1270 else O_LST(opt, "dnscrypt-secret-key", dnscrypt_secret_key) 1271 else O_MEM(opt, "dnscrypt-shared-secret-cache-size", 1272 dnscrypt_shared_secret_cache_size) 1273 else O_DEC(opt, "dnscrypt-shared-secret-cache-slabs", 1274 dnscrypt_shared_secret_cache_slabs) 1275 else O_MEM(opt, "dnscrypt-nonce-cache-size", 1276 dnscrypt_nonce_cache_size) 1277 else O_DEC(opt, "dnscrypt-nonce-cache-slabs", 1278 dnscrypt_nonce_cache_slabs) 1279 #endif 1280 else O_YNO(opt, "unblock-lan-zones", unblock_lan_zones) 1281 else O_YNO(opt, "insecure-lan-zones", insecure_lan_zones) 1282 else O_DEC(opt, "max-udp-size", max_udp_size) 1283 else O_LST(opt, "python-script", python_script) 1284 else O_LST(opt, "dynlib-file", dynlib_file) 1285 else O_YNO(opt, "disable-dnssec-lame-check", disable_dnssec_lame_check) 1286 else O_DEC(opt, "ip-ratelimit-cookie", ip_ratelimit_cookie) 1287 else O_DEC(opt, "ip-ratelimit", ip_ratelimit) 1288 else O_DEC(opt, "ratelimit", ratelimit) 1289 else O_MEM(opt, "ip-ratelimit-size", ip_ratelimit_size) 1290 else O_MEM(opt, "ratelimit-size", ratelimit_size) 1291 else O_DEC(opt, "ip-ratelimit-slabs", ip_ratelimit_slabs) 1292 else O_DEC(opt, "ratelimit-slabs", ratelimit_slabs) 1293 else O_LS2(opt, "ratelimit-for-domain", ratelimit_for_domain) 1294 else O_LS2(opt, "ratelimit-below-domain", ratelimit_below_domain) 1295 else O_DEC(opt, "ip-ratelimit-factor", ip_ratelimit_factor) 1296 else O_DEC(opt, "ratelimit-factor", ratelimit_factor) 1297 else O_YNO(opt, "ip-ratelimit-backoff", ip_ratelimit_backoff) 1298 else O_YNO(opt, "ratelimit-backoff", ratelimit_backoff) 1299 else O_UNS(opt, "outbound-msg-retry", outbound_msg_retry) 1300 else O_UNS(opt, "max-sent-count", max_sent_count) 1301 else O_UNS(opt, "max-query-restarts", max_query_restarts) 1302 else O_DEC(opt, "fast-server-num", fast_server_num) 1303 else O_DEC(opt, "fast-server-permil", fast_server_permil) 1304 else O_DEC(opt, "val-sig-skew-min", val_sig_skew_min) 1305 else O_DEC(opt, "val-sig-skew-max", val_sig_skew_max) 1306 else O_DEC(opt, "val-max-restart", val_max_restart) 1307 else O_YNO(opt, "qname-minimisation", qname_minimisation) 1308 else O_YNO(opt, "qname-minimisation-strict", qname_minimisation_strict) 1309 else O_IFC(opt, "define-tag", num_tags, tagname) 1310 else O_LTG(opt, "local-zone-tag", local_zone_tags) 1311 else O_LTG(opt, "access-control-tag", acl_tags) 1312 else O_LTG(opt, "response-ip-tag", respip_tags) 1313 else O_LS3(opt, "local-zone-override", local_zone_overrides) 1314 else O_LS3(opt, "access-control-tag-action", acl_tag_actions) 1315 else O_LS3(opt, "access-control-tag-data", acl_tag_datas) 1316 else O_LS2(opt, "access-control-view", acl_view) 1317 else O_LS2(opt, "interface-action", interface_actions) 1318 else O_LTG(opt, "interface-tag", interface_tags) 1319 else O_LS3(opt, "interface-tag-action", interface_tag_actions) 1320 else O_LS3(opt, "interface-tag-data", interface_tag_datas) 1321 else O_LS2(opt, "interface-view", interface_view) 1322 else O_YNO(opt, "pad-responses", pad_responses) 1323 else O_DEC(opt, "pad-responses-block-size", pad_responses_block_size) 1324 else O_YNO(opt, "pad-queries", pad_queries) 1325 else O_DEC(opt, "pad-queries-block-size", pad_queries_block_size) 1326 else O_LS2(opt, "edns-client-strings", edns_client_strings) 1327 else O_LST(opt, "proxy-protocol-port", proxy_protocol_port) 1328 #ifdef USE_IPSECMOD 1329 else O_YNO(opt, "ipsecmod-enabled", ipsecmod_enabled) 1330 else O_YNO(opt, "ipsecmod-ignore-bogus", ipsecmod_ignore_bogus) 1331 else O_STR(opt, "ipsecmod-hook", ipsecmod_hook) 1332 else O_DEC(opt, "ipsecmod-max-ttl", ipsecmod_max_ttl) 1333 else O_LST(opt, "ipsecmod-whitelist", ipsecmod_whitelist) 1334 else O_YNO(opt, "ipsecmod-strict", ipsecmod_strict) 1335 #endif 1336 #ifdef USE_CACHEDB 1337 else O_STR(opt, "backend", cachedb_backend) 1338 else O_STR(opt, "secret-seed", cachedb_secret) 1339 else O_YNO(opt, "cachedb-no-store", cachedb_no_store) 1340 else O_YNO(opt, "cachedb-check-when-serve-expired", cachedb_check_when_serve_expired) 1341 #ifdef USE_REDIS 1342 else O_STR(opt, "redis-server-host", redis_server_host) 1343 else O_DEC(opt, "redis-server-port", redis_server_port) 1344 else O_STR(opt, "redis-server-path", redis_server_path) 1345 else O_STR(opt, "redis-server-password", redis_server_password) 1346 else O_DEC(opt, "redis-timeout", redis_timeout) 1347 else O_YNO(opt, "redis-expire-records", redis_expire_records) 1348 else O_DEC(opt, "redis-logical-db", redis_logical_db) 1349 #endif /* USE_REDIS */ 1350 #endif /* USE_CACHEDB */ 1351 #ifdef USE_IPSET 1352 else O_STR(opt, "name-v4", ipset_name_v4) 1353 else O_STR(opt, "name-v6", ipset_name_v6) 1354 #endif 1355 /* not here: 1356 * outgoing-permit, outgoing-avoid - have list of ports 1357 * local-zone - zones and nodefault variables 1358 * local-data - see below 1359 * local-data-ptr - converted to local-data entries 1360 * stub-zone, name, stub-addr, stub-host, stub-prime 1361 * forward-zone, name, forward-addr, forward-host 1362 */ 1363 else return 0; 1364 return 1; 1365 } 1366 1367 /** initialize the global cfg_parser object */ 1368 static void 1369 create_cfg_parser(struct config_file* cfg, char* filename, const char* chroot) 1370 { 1371 static struct config_parser_state st; 1372 cfg_parser = &st; 1373 cfg_parser->filename = filename; 1374 cfg_parser->line = 1; 1375 cfg_parser->errors = 0; 1376 cfg_parser->cfg = cfg; 1377 cfg_parser->chroot = chroot; 1378 cfg_parser->started_toplevel = 0; 1379 init_cfg_parse(); 1380 } 1381 1382 int 1383 config_read(struct config_file* cfg, const char* filename, const char* chroot) 1384 { 1385 FILE *in; 1386 char *fname = (char*)filename; 1387 #ifdef HAVE_GLOB 1388 glob_t g; 1389 size_t i; 1390 int r, flags; 1391 #endif 1392 if(!fname) 1393 return 1; 1394 1395 /* check for wildcards */ 1396 #ifdef HAVE_GLOB 1397 if(!(!strchr(fname, '*') && !strchr(fname, '?') && !strchr(fname, '[') && 1398 !strchr(fname, '{') && !strchr(fname, '~'))) { 1399 verbose(VERB_QUERY, "wildcard found, processing %s", fname); 1400 flags = 0 1401 #ifdef GLOB_ERR 1402 | GLOB_ERR 1403 #endif 1404 #ifdef GLOB_NOSORT 1405 | GLOB_NOSORT 1406 #endif 1407 #ifdef GLOB_BRACE 1408 | GLOB_BRACE 1409 #endif 1410 #ifdef GLOB_TILDE 1411 | GLOB_TILDE 1412 #endif 1413 ; 1414 memset(&g, 0, sizeof(g)); 1415 r = glob(fname, flags, NULL, &g); 1416 if(r) { 1417 /* some error */ 1418 globfree(&g); 1419 if(r == GLOB_NOMATCH) { 1420 verbose(VERB_QUERY, "include: " 1421 "no matches for %s", fname); 1422 return 1; 1423 } else if(r == GLOB_NOSPACE) { 1424 log_err("include: %s: " 1425 "fnametern out of memory", fname); 1426 } else if(r == GLOB_ABORTED) { 1427 log_err("wildcard include: %s: expansion " 1428 "aborted (%s)", fname, strerror(errno)); 1429 } else { 1430 log_err("wildcard include: %s: expansion " 1431 "failed (%s)", fname, strerror(errno)); 1432 } 1433 /* ignore globs that yield no files */ 1434 return 1; 1435 } 1436 /* process files found, if any */ 1437 for(i=0; i<(size_t)g.gl_pathc; i++) { 1438 if(!config_read(cfg, g.gl_pathv[i], chroot)) { 1439 log_err("error reading wildcard " 1440 "include: %s", g.gl_pathv[i]); 1441 globfree(&g); 1442 return 0; 1443 } 1444 } 1445 globfree(&g); 1446 return 1; 1447 } 1448 #endif /* HAVE_GLOB */ 1449 1450 in = fopen(fname, "r"); 1451 if(!in) { 1452 log_err("Could not open %s: %s", fname, strerror(errno)); 1453 return 0; 1454 } 1455 create_cfg_parser(cfg, fname, chroot); 1456 ub_c_in = in; 1457 ub_c_parse(); 1458 fclose(in); 1459 1460 if(!cfg->dnscrypt) cfg->dnscrypt_port = 0; 1461 1462 if(cfg_parser->errors != 0) { 1463 fprintf(stderr, "read %s failed: %d errors in configuration file\n", 1464 fname, cfg_parser->errors); 1465 errno=EINVAL; 1466 return 0; 1467 } 1468 1469 return 1; 1470 } 1471 1472 struct config_stub* cfg_stub_find(struct config_stub*** pp, const char* nm) 1473 { 1474 struct config_stub* p = *(*pp); 1475 while(p) { 1476 if(strcmp(p->name, nm) == 0) 1477 return p; 1478 (*pp) = &p->next; 1479 p = p->next; 1480 } 1481 return NULL; 1482 } 1483 1484 void 1485 config_delstrlist(struct config_strlist* p) 1486 { 1487 struct config_strlist *np; 1488 while(p) { 1489 np = p->next; 1490 free(p->str); 1491 free(p); 1492 p = np; 1493 } 1494 } 1495 1496 void 1497 config_deldblstrlist(struct config_str2list* p) 1498 { 1499 struct config_str2list *np; 1500 while(p) { 1501 np = p->next; 1502 free(p->str); 1503 free(p->str2); 1504 free(p); 1505 p = np; 1506 } 1507 } 1508 1509 void 1510 config_deltrplstrlist(struct config_str3list* p) 1511 { 1512 struct config_str3list *np; 1513 while(p) { 1514 np = p->next; 1515 free(p->str); 1516 free(p->str2); 1517 free(p->str3); 1518 free(p); 1519 p = np; 1520 } 1521 } 1522 1523 void 1524 config_delauth(struct config_auth* p) 1525 { 1526 if(!p) return; 1527 free(p->name); 1528 config_delstrlist(p->masters); 1529 config_delstrlist(p->urls); 1530 config_delstrlist(p->allow_notify); 1531 free(p->zonefile); 1532 free(p->rpz_taglist); 1533 free(p->rpz_action_override); 1534 free(p->rpz_cname); 1535 free(p->rpz_log_name); 1536 free(p); 1537 } 1538 1539 void 1540 config_delauths(struct config_auth* p) 1541 { 1542 struct config_auth* np; 1543 while(p) { 1544 np = p->next; 1545 config_delauth(p); 1546 p = np; 1547 } 1548 } 1549 1550 void 1551 config_delstub(struct config_stub* p) 1552 { 1553 if(!p) return; 1554 free(p->name); 1555 config_delstrlist(p->hosts); 1556 config_delstrlist(p->addrs); 1557 free(p); 1558 } 1559 1560 void 1561 config_delstubs(struct config_stub* p) 1562 { 1563 struct config_stub* np; 1564 while(p) { 1565 np = p->next; 1566 config_delstub(p); 1567 p = np; 1568 } 1569 } 1570 1571 void 1572 config_delview(struct config_view* p) 1573 { 1574 if(!p) return; 1575 free(p->name); 1576 config_deldblstrlist(p->local_zones); 1577 config_delstrlist(p->local_zones_nodefault); 1578 #ifdef USE_IPSET 1579 config_delstrlist(p->local_zones_ipset); 1580 #endif 1581 config_delstrlist(p->local_data); 1582 free(p); 1583 } 1584 1585 void 1586 config_delviews(struct config_view* p) 1587 { 1588 struct config_view* np; 1589 while(p) { 1590 np = p->next; 1591 config_delview(p); 1592 p = np; 1593 } 1594 } 1595 1596 void 1597 config_del_strarray(char** array, int num) 1598 { 1599 int i; 1600 if(!array) 1601 return; 1602 for(i=0; i<num; i++) { 1603 free(array[i]); 1604 } 1605 free(array); 1606 } 1607 1608 void 1609 config_del_strbytelist(struct config_strbytelist* p) 1610 { 1611 struct config_strbytelist* np; 1612 while(p) { 1613 np = p->next; 1614 free(p->str); 1615 free(p->str2); 1616 free(p); 1617 p = np; 1618 } 1619 } 1620 1621 void 1622 config_delete(struct config_file* cfg) 1623 { 1624 if(!cfg) return; 1625 free(cfg->username); 1626 free(cfg->chrootdir); 1627 free(cfg->directory); 1628 free(cfg->logfile); 1629 free(cfg->pidfile); 1630 free(cfg->if_automatic_ports); 1631 free(cfg->target_fetch_policy); 1632 free(cfg->ssl_service_key); 1633 free(cfg->ssl_service_pem); 1634 free(cfg->tls_cert_bundle); 1635 config_delstrlist(cfg->tls_additional_port); 1636 config_delstrlist(cfg->tls_session_ticket_keys.first); 1637 free(cfg->tls_ciphers); 1638 free(cfg->tls_ciphersuites); 1639 free(cfg->http_endpoint); 1640 if(cfg->log_identity) { 1641 log_ident_revert_to_default(); 1642 free(cfg->log_identity); 1643 } 1644 config_del_strarray(cfg->ifs, cfg->num_ifs); 1645 config_del_strarray(cfg->out_ifs, cfg->num_out_ifs); 1646 config_delstubs(cfg->stubs); 1647 config_delstubs(cfg->forwards); 1648 config_delauths(cfg->auths); 1649 config_delviews(cfg->views); 1650 config_delstrlist(cfg->donotqueryaddrs); 1651 config_delstrlist(cfg->root_hints); 1652 #ifdef CLIENT_SUBNET 1653 config_delstrlist(cfg->client_subnet); 1654 config_delstrlist(cfg->client_subnet_zone); 1655 #endif 1656 free(cfg->identity); 1657 free(cfg->version); 1658 free(cfg->http_user_agent); 1659 free(cfg->nsid_cfg_str); 1660 free(cfg->nsid); 1661 free(cfg->module_conf); 1662 free(cfg->outgoing_avail_ports); 1663 config_delstrlist(cfg->caps_whitelist); 1664 config_delstrlist(cfg->private_address); 1665 config_delstrlist(cfg->private_domain); 1666 config_delstrlist(cfg->auto_trust_anchor_file_list); 1667 config_delstrlist(cfg->trust_anchor_file_list); 1668 config_delstrlist(cfg->trusted_keys_file_list); 1669 config_delstrlist(cfg->trust_anchor_list); 1670 config_delstrlist(cfg->domain_insecure); 1671 config_deldblstrlist(cfg->acls); 1672 config_deldblstrlist(cfg->tcp_connection_limits); 1673 free(cfg->val_nsec3_key_iterations); 1674 config_deldblstrlist(cfg->local_zones); 1675 config_delstrlist(cfg->local_zones_nodefault); 1676 #ifdef USE_IPSET 1677 config_delstrlist(cfg->local_zones_ipset); 1678 #endif 1679 config_delstrlist(cfg->local_data); 1680 config_deltrplstrlist(cfg->local_zone_overrides); 1681 config_del_strarray(cfg->tagname, cfg->num_tags); 1682 config_del_strbytelist(cfg->local_zone_tags); 1683 config_del_strbytelist(cfg->respip_tags); 1684 config_deldblstrlist(cfg->acl_view); 1685 config_del_strbytelist(cfg->acl_tags); 1686 config_deltrplstrlist(cfg->acl_tag_actions); 1687 config_deltrplstrlist(cfg->acl_tag_datas); 1688 config_deldblstrlist(cfg->interface_actions); 1689 config_deldblstrlist(cfg->interface_view); 1690 config_del_strbytelist(cfg->interface_tags); 1691 config_deltrplstrlist(cfg->interface_tag_actions); 1692 config_deltrplstrlist(cfg->interface_tag_datas); 1693 config_delstrlist(cfg->control_ifs.first); 1694 config_deldblstrlist(cfg->wait_limit_netblock); 1695 config_deldblstrlist(cfg->wait_limit_cookie_netblock); 1696 free(cfg->server_key_file); 1697 free(cfg->server_cert_file); 1698 free(cfg->control_key_file); 1699 free(cfg->control_cert_file); 1700 free(cfg->nat64_prefix); 1701 free(cfg->dns64_prefix); 1702 config_delstrlist(cfg->dns64_ignore_aaaa); 1703 free(cfg->dnstap_socket_path); 1704 free(cfg->dnstap_ip); 1705 free(cfg->dnstap_tls_server_name); 1706 free(cfg->dnstap_tls_cert_bundle); 1707 free(cfg->dnstap_tls_client_key_file); 1708 free(cfg->dnstap_tls_client_cert_file); 1709 free(cfg->dnstap_identity); 1710 free(cfg->dnstap_version); 1711 config_deldblstrlist(cfg->ratelimit_for_domain); 1712 config_deldblstrlist(cfg->ratelimit_below_domain); 1713 config_delstrlist(cfg->python_script); 1714 config_delstrlist(cfg->dynlib_file); 1715 config_deldblstrlist(cfg->edns_client_strings); 1716 config_delstrlist(cfg->proxy_protocol_port); 1717 #ifdef USE_IPSECMOD 1718 free(cfg->ipsecmod_hook); 1719 config_delstrlist(cfg->ipsecmod_whitelist); 1720 #endif 1721 #ifdef USE_CACHEDB 1722 free(cfg->cachedb_backend); 1723 free(cfg->cachedb_secret); 1724 #ifdef USE_REDIS 1725 free(cfg->redis_server_host); 1726 free(cfg->redis_server_path); 1727 free(cfg->redis_server_password); 1728 #endif /* USE_REDIS */ 1729 #endif /* USE_CACHEDB */ 1730 #ifdef USE_IPSET 1731 free(cfg->ipset_name_v4); 1732 free(cfg->ipset_name_v6); 1733 #endif 1734 free(cfg); 1735 } 1736 1737 static void 1738 init_cookie_secret(uint8_t* cookie_secret, size_t cookie_secret_len) 1739 { 1740 struct ub_randstate *rand = ub_initstate(NULL); 1741 1742 if (!rand) 1743 fatal_exit("could not init random generator"); 1744 while (cookie_secret_len) { 1745 *cookie_secret++ = (uint8_t)ub_random(rand); 1746 cookie_secret_len--; 1747 } 1748 ub_randfree(rand); 1749 } 1750 1751 static void 1752 init_outgoing_availports(int* a, int num) 1753 { 1754 /* generated with make iana_update */ 1755 const int iana_assigned[] = { 1756 #include "util/iana_ports.inc" 1757 -1 }; /* end marker to put behind trailing comma */ 1758 1759 int i; 1760 /* do not use <1024, that could be trouble with the system, privs */ 1761 for(i=1024; i<num; i++) { 1762 a[i] = i; 1763 } 1764 /* create empty spot at 49152 to keep ephemeral ports available 1765 * to other programs */ 1766 for(i=49152; i<49152+256; i++) 1767 a[i] = 0; 1768 /* pick out all the IANA assigned ports */ 1769 for(i=0; iana_assigned[i]!=-1; i++) { 1770 if(iana_assigned[i] < num) 1771 a[iana_assigned[i]] = 0; 1772 } 1773 } 1774 1775 int 1776 cfg_mark_ports(const char* str, int allow, int* avail, int num) 1777 { 1778 char* mid = strchr(str, '-'); 1779 #ifdef DISABLE_EXPLICIT_PORT_RANDOMISATION 1780 log_warn("Explicit port randomisation disabled, ignoring " 1781 "outgoing-port-permit and outgoing-port-avoid configuration " 1782 "options"); 1783 #endif 1784 if(!mid) { 1785 int port = atoi(str); 1786 if(port < 0) { 1787 log_err("port number is negative: %d", port); 1788 return 0; 1789 } 1790 if(port == 0 && strcmp(str, "0") != 0) { 1791 log_err("cannot parse port number '%s'", str); 1792 return 0; 1793 } 1794 if(port < num) 1795 avail[port] = (allow?port:0); 1796 } else { 1797 int i, low, high = atoi(mid+1); 1798 char buf[16]; 1799 if(high < 0) { 1800 log_err("port number is negative: %d", high); 1801 return 0; 1802 } 1803 if(high == 0 && strcmp(mid+1, "0") != 0) { 1804 log_err("cannot parse port number '%s'", mid+1); 1805 return 0; 1806 } 1807 if( (int)(mid-str)+1 >= (int)sizeof(buf) ) { 1808 log_err("cannot parse port number '%s'", str); 1809 return 0; 1810 } 1811 if(mid > str) 1812 memcpy(buf, str, (size_t)(mid-str)); 1813 buf[mid-str] = 0; 1814 low = atoi(buf); 1815 if(low < 0) { 1816 log_err("port number is negative: %d", low); 1817 return 0; 1818 } 1819 if(low == 0 && strcmp(buf, "0") != 0) { 1820 log_err("cannot parse port number '%s'", buf); 1821 return 0; 1822 } 1823 if(high > num) { 1824 /* Stop very high values from taking a long time. */ 1825 high = num; 1826 } 1827 for(i=low; i<=high; i++) { 1828 if(i < num) 1829 avail[i] = (allow?i:0); 1830 } 1831 return 1; 1832 } 1833 return 1; 1834 } 1835 1836 int 1837 cfg_scan_ports(int* avail, int num) 1838 { 1839 int i; 1840 int count = 0; 1841 for(i=0; i<num; i++) { 1842 if(avail[i]) 1843 count++; 1844 } 1845 return count; 1846 } 1847 1848 int cfg_condense_ports(struct config_file* cfg, int** avail) 1849 { 1850 int num = cfg_scan_ports(cfg->outgoing_avail_ports, 65536); 1851 int i, at = 0; 1852 *avail = NULL; 1853 if(num == 0) 1854 return 0; 1855 *avail = (int*)reallocarray(NULL, (size_t)num, sizeof(int)); 1856 if(!*avail) 1857 return 0; 1858 for(i=0; i<65536; i++) { 1859 if(cfg->outgoing_avail_ports[i]) 1860 (*avail)[at++] = cfg->outgoing_avail_ports[i]; 1861 } 1862 log_assert(at == num); 1863 return num; 1864 } 1865 1866 void cfg_apply_local_port_policy(struct config_file* cfg, int num) { 1867 (void)cfg; 1868 (void)num; 1869 #ifdef USE_LINUX_IP_LOCAL_PORT_RANGE 1870 { 1871 int i = 0; 1872 FILE* range_fd; 1873 if ((range_fd = fopen(LINUX_IP_LOCAL_PORT_RANGE_PATH, "r")) != NULL) { 1874 int min_port = 0; 1875 int max_port = num - 1; 1876 if (fscanf(range_fd, "%d %d", &min_port, &max_port) == 2) { 1877 for(i=0; i<min_port; i++) { 1878 cfg->outgoing_avail_ports[i] = 0; 1879 } 1880 for(i=max_port+1; i<num; i++) { 1881 cfg->outgoing_avail_ports[i] = 0; 1882 } 1883 } else { 1884 log_err("unexpected port range in %s", 1885 LINUX_IP_LOCAL_PORT_RANGE_PATH); 1886 } 1887 fclose(range_fd); 1888 } else { 1889 log_err("failed to read from file: %s (%s)", 1890 LINUX_IP_LOCAL_PORT_RANGE_PATH, 1891 strerror(errno)); 1892 } 1893 } 1894 #endif 1895 } 1896 1897 /** print error with file and line number */ 1898 static void ub_c_error_va_list(const char *fmt, va_list args) 1899 { 1900 cfg_parser->errors++; 1901 fprintf(stderr, "%s:%d: error: ", cfg_parser->filename, 1902 cfg_parser->line); 1903 vfprintf(stderr, fmt, args); 1904 fprintf(stderr, "\n"); 1905 } 1906 1907 /** print error with file and line number */ 1908 void ub_c_error_msg(const char* fmt, ...) 1909 { 1910 va_list args; 1911 va_start(args, fmt); 1912 ub_c_error_va_list(fmt, args); 1913 va_end(args); 1914 } 1915 1916 void ub_c_error(const char *str) 1917 { 1918 cfg_parser->errors++; 1919 if(strcmp(str, "syntax error")==0 && cfg_parser->started_toplevel ==0) 1920 str = "syntax error, is there no section start after an " 1921 "include-toplevel directive perhaps."; 1922 fprintf(stderr, "%s:%d: error: %s\n", cfg_parser->filename, 1923 cfg_parser->line, str); 1924 } 1925 1926 int ub_c_wrap(void) 1927 { 1928 return 1; 1929 } 1930 1931 int cfg_strlist_append(struct config_strlist_head* list, char* item) 1932 { 1933 struct config_strlist *s; 1934 if(!item || !list) { 1935 free(item); 1936 return 0; 1937 } 1938 s = (struct config_strlist*)calloc(1, sizeof(struct config_strlist)); 1939 if(!s) { 1940 free(item); 1941 return 0; 1942 } 1943 s->str = item; 1944 s->next = NULL; 1945 if(list->last) 1946 list->last->next = s; 1947 else 1948 list->first = s; 1949 list->last = s; 1950 return 1; 1951 } 1952 1953 int 1954 cfg_region_strlist_insert(struct regional* region, 1955 struct config_strlist** head, char* item) 1956 { 1957 struct config_strlist *s; 1958 if(!item || !head) 1959 return 0; 1960 s = (struct config_strlist*)regional_alloc_zero(region, 1961 sizeof(struct config_strlist)); 1962 if(!s) 1963 return 0; 1964 s->str = item; 1965 s->next = *head; 1966 *head = s; 1967 return 1; 1968 } 1969 1970 struct config_strlist* 1971 cfg_strlist_find(struct config_strlist* head, const char *item) 1972 { 1973 struct config_strlist *s = head; 1974 if(!head){ 1975 return NULL; 1976 } 1977 while(s) { 1978 if(strcmp(s->str, item) == 0) { 1979 return s; 1980 } 1981 s = s->next; 1982 } 1983 return NULL; 1984 } 1985 1986 int 1987 cfg_strlist_insert(struct config_strlist** head, char* item) 1988 { 1989 struct config_strlist *s; 1990 if(!item || !head) { 1991 free(item); 1992 return 0; 1993 } 1994 s = (struct config_strlist*)calloc(1, sizeof(struct config_strlist)); 1995 if(!s) { 1996 free(item); 1997 return 0; 1998 } 1999 s->str = item; 2000 s->next = *head; 2001 *head = s; 2002 return 1; 2003 } 2004 2005 int 2006 cfg_strlist_append_ex(struct config_strlist** head, char* item) 2007 { 2008 struct config_strlist *s; 2009 if(!item || !head) 2010 return 0; 2011 s = (struct config_strlist*)calloc(1, sizeof(struct config_strlist)); 2012 if(!s) 2013 return 0; 2014 s->str = item; 2015 s->next = NULL; 2016 2017 if (*head==NULL) { 2018 *head = s; 2019 } else { 2020 struct config_strlist *last = *head; 2021 while (last->next!=NULL) { 2022 last = last->next; 2023 } 2024 last->next = s; 2025 } 2026 2027 return 1; 2028 } 2029 2030 int 2031 cfg_str2list_insert(struct config_str2list** head, char* item, char* i2) 2032 { 2033 struct config_str2list *s; 2034 if(!item || !i2 || !head) { 2035 free(item); 2036 free(i2); 2037 return 0; 2038 } 2039 s = (struct config_str2list*)calloc(1, sizeof(struct config_str2list)); 2040 if(!s) { 2041 free(item); 2042 free(i2); 2043 return 0; 2044 } 2045 s->str = item; 2046 s->str2 = i2; 2047 s->next = *head; 2048 *head = s; 2049 return 1; 2050 } 2051 2052 int 2053 cfg_str3list_insert(struct config_str3list** head, char* item, char* i2, 2054 char* i3) 2055 { 2056 struct config_str3list *s; 2057 if(!item || !i2 || !i3 || !head) 2058 return 0; 2059 s = (struct config_str3list*)calloc(1, sizeof(struct config_str3list)); 2060 if(!s) 2061 return 0; 2062 s->str = item; 2063 s->str2 = i2; 2064 s->str3 = i3; 2065 s->next = *head; 2066 *head = s; 2067 return 1; 2068 } 2069 2070 int 2071 cfg_strbytelist_insert(struct config_strbytelist** head, char* item, 2072 uint8_t* i2, size_t i2len) 2073 { 2074 struct config_strbytelist* s; 2075 if(!item || !i2 || !head) 2076 return 0; 2077 s = (struct config_strbytelist*)calloc(1, sizeof(*s)); 2078 if(!s) 2079 return 0; 2080 s->str = item; 2081 s->str2 = i2; 2082 s->str2len = i2len; 2083 s->next = *head; 2084 *head = s; 2085 return 1; 2086 } 2087 2088 time_t 2089 cfg_convert_timeval(const char* str) 2090 { 2091 time_t t; 2092 struct tm tm; 2093 memset(&tm, 0, sizeof(tm)); 2094 if(strlen(str) < 14) 2095 return 0; 2096 if(sscanf(str, "%4d%2d%2d%2d%2d%2d", &tm.tm_year, &tm.tm_mon, 2097 &tm.tm_mday, &tm.tm_hour, &tm.tm_min, &tm.tm_sec) != 6) 2098 return 0; 2099 tm.tm_year -= 1900; 2100 tm.tm_mon--; 2101 /* Check values */ 2102 if (tm.tm_year < 70) return 0; 2103 if (tm.tm_mon < 0 || tm.tm_mon > 11) return 0; 2104 if (tm.tm_mday < 1 || tm.tm_mday > 31) return 0; 2105 if (tm.tm_hour < 0 || tm.tm_hour > 23) return 0; 2106 if (tm.tm_min < 0 || tm.tm_min > 59) return 0; 2107 if (tm.tm_sec < 0 || tm.tm_sec > 59) return 0; 2108 /* call ldns conversion function */ 2109 t = sldns_mktime_from_utc(&tm); 2110 return t; 2111 } 2112 2113 int 2114 cfg_count_numbers(const char* s) 2115 { 2116 /* format ::= (sp num)+ sp */ 2117 /* num ::= [-](0-9)+ */ 2118 /* sp ::= (space|tab)* */ 2119 int num = 0; 2120 while(*s) { 2121 while(*s && isspace((unsigned char)*s)) 2122 s++; 2123 if(!*s) /* end of string */ 2124 break; 2125 if(*s == '-') 2126 s++; 2127 if(!*s) /* only - not allowed */ 2128 return 0; 2129 if(!isdigit((unsigned char)*s)) /* bad character */ 2130 return 0; 2131 while(*s && isdigit((unsigned char)*s)) 2132 s++; 2133 num++; 2134 } 2135 return num; 2136 } 2137 2138 /** all digit number */ 2139 static int isalldigit(const char* str, size_t l) 2140 { 2141 size_t i; 2142 for(i=0; i<l; i++) 2143 if(!isdigit((unsigned char)str[i])) 2144 return 0; 2145 return 1; 2146 } 2147 2148 int 2149 cfg_parse_memsize(const char* str, size_t* res) 2150 { 2151 size_t len; 2152 size_t mult = 1; 2153 if(!str || (len=(size_t)strlen(str)) == 0) { 2154 log_err("not a size: '%s'", str); 2155 return 0; 2156 } 2157 if(isalldigit(str, len)) { 2158 *res = (size_t)atol(str); 2159 return 1; 2160 } 2161 /* check appended num */ 2162 while(len>0 && str[len-1]==' ') 2163 len--; 2164 if(len > 1 && str[len-1] == 'b') 2165 len--; 2166 else if(len > 1 && str[len-1] == 'B') 2167 len--; 2168 2169 if(len > 1 && tolower((unsigned char)str[len-1]) == 'g') 2170 mult = 1024*1024*1024; 2171 else if(len > 1 && tolower((unsigned char)str[len-1]) == 'm') 2172 mult = 1024*1024; 2173 else if(len > 1 && tolower((unsigned char)str[len-1]) == 'k') 2174 mult = 1024; 2175 else if(len > 0 && isdigit((unsigned char)str[len-1])) 2176 mult = 1; 2177 else { 2178 log_err("unknown size specifier: '%s'", str); 2179 return 0; 2180 } 2181 while(len>1 && str[len-2]==' ') 2182 len--; 2183 2184 if(!isalldigit(str, len-1)) { 2185 log_err("unknown size specifier: '%s'", str); 2186 return 0; 2187 } 2188 *res = ((size_t)atol(str)) * mult; 2189 return 1; 2190 } 2191 2192 int 2193 find_tag_id(struct config_file* cfg, const char* tag) 2194 { 2195 int i; 2196 for(i=0; i<cfg->num_tags; i++) { 2197 if(strcmp(cfg->tagname[i], tag) == 0) 2198 return i; 2199 } 2200 return -1; 2201 } 2202 2203 int 2204 config_add_tag(struct config_file* cfg, const char* tag) 2205 { 2206 char** newarray; 2207 char* newtag; 2208 if(find_tag_id(cfg, tag) != -1) 2209 return 1; /* nothing to do */ 2210 newarray = (char**)malloc(sizeof(char*)*(cfg->num_tags+1)); 2211 if(!newarray) 2212 return 0; 2213 newtag = strdup(tag); 2214 if(!newtag) { 2215 free(newarray); 2216 return 0; 2217 } 2218 if(cfg->tagname) { 2219 memcpy(newarray, cfg->tagname, sizeof(char*)*cfg->num_tags); 2220 free(cfg->tagname); 2221 } 2222 newarray[cfg->num_tags++] = newtag; 2223 cfg->tagname = newarray; 2224 return 1; 2225 } 2226 2227 /** set a bit in a bit array */ 2228 static void 2229 cfg_set_bit(uint8_t* bitlist, size_t len, int id) 2230 { 2231 int pos = id/8; 2232 log_assert((size_t)pos < len); 2233 (void)len; 2234 bitlist[pos] |= 1<<(id%8); 2235 } 2236 2237 uint8_t* config_parse_taglist(struct config_file* cfg, char* str, 2238 size_t* listlen) 2239 { 2240 uint8_t* taglist = NULL; 2241 size_t len = 0; 2242 char* p, *s; 2243 2244 /* allocate */ 2245 if(cfg->num_tags == 0) { 2246 log_err("parse taglist, but no tags defined"); 2247 return 0; 2248 } 2249 len = (size_t)(cfg->num_tags+7)/8; 2250 taglist = calloc(1, len); 2251 if(!taglist) { 2252 log_err("out of memory"); 2253 return 0; 2254 } 2255 2256 /* parse */ 2257 s = str; 2258 while((p=strsep(&s, " \t\n")) != NULL) { 2259 if(*p) { 2260 int id = find_tag_id(cfg, p); 2261 /* set this bit in the bitlist */ 2262 if(id == -1) { 2263 log_err("unknown tag: %s", p); 2264 free(taglist); 2265 return 0; 2266 } 2267 cfg_set_bit(taglist, len, id); 2268 } 2269 } 2270 2271 *listlen = len; 2272 return taglist; 2273 } 2274 2275 uint8_t* cfg_parse_nsid(const char* str, uint16_t* nsid_len) 2276 { 2277 uint8_t* nsid = NULL; 2278 2279 if (strncasecmp(str, "ascii_", 6) == 0) { 2280 if ((nsid = (uint8_t *)strdup(str + 6))) 2281 *nsid_len = strlen(str + 6); 2282 2283 } else if (strlen(str) % 2) { 2284 ; /* hex string has even number of characters */ 2285 } 2286 2287 else if (*str && (nsid = calloc(1, strlen(str) / 2))) { 2288 const char *ch; 2289 uint8_t *dp; 2290 2291 for ( ch = str, dp = nsid 2292 ; isxdigit(ch[0]) && isxdigit(ch[1]) 2293 ; ch += 2, dp++) { 2294 *dp = (uint8_t)sldns_hexdigit_to_int(ch[0]) * 16; 2295 *dp += (uint8_t)sldns_hexdigit_to_int(ch[1]); 2296 } 2297 if (*ch) { 2298 free(nsid); 2299 nsid = NULL; 2300 } else 2301 *nsid_len = strlen(str) / 2; 2302 } 2303 return nsid; 2304 } 2305 2306 2307 char* config_taglist2str(struct config_file* cfg, uint8_t* taglist, 2308 size_t taglen) 2309 { 2310 char buf[10240]; 2311 size_t i, j, len = 0; 2312 buf[0] = 0; 2313 for(i=0; i<taglen; i++) { 2314 if(taglist[i] == 0) 2315 continue; 2316 for(j=0; j<8; j++) { 2317 if((taglist[i] & (1<<j)) != 0) { 2318 size_t id = i*8 + j; 2319 snprintf(buf+len, sizeof(buf)-len, "%s%s", 2320 (len==0?"":" "), cfg->tagname[id]); 2321 len += strlen(buf+len); 2322 } 2323 } 2324 } 2325 return strdup(buf); 2326 } 2327 2328 int taglist_intersect(uint8_t* list1, size_t list1len, const uint8_t* list2, 2329 size_t list2len) 2330 { 2331 size_t i; 2332 if(!list1 || !list2) 2333 return 0; 2334 for(i=0; i<list1len && i<list2len; i++) { 2335 if((list1[i] & list2[i]) != 0) 2336 return 1; 2337 } 2338 return 0; 2339 } 2340 2341 void 2342 config_apply(struct config_file* config) 2343 { 2344 MAX_TTL = (time_t)config->max_ttl; 2345 MIN_TTL = (time_t)config->min_ttl; 2346 SERVE_EXPIRED = config->serve_expired; 2347 SERVE_EXPIRED_TTL = (time_t)config->serve_expired_ttl; 2348 SERVE_EXPIRED_REPLY_TTL = (time_t)config->serve_expired_reply_ttl; 2349 SERVE_ORIGINAL_TTL = config->serve_original_ttl; 2350 MAX_NEG_TTL = (time_t)config->max_negative_ttl; 2351 MIN_NEG_TTL = (time_t)config->min_negative_ttl; 2352 RTT_MIN_TIMEOUT = config->infra_cache_min_rtt; 2353 RTT_MAX_TIMEOUT = config->infra_cache_max_rtt; 2354 EDNS_ADVERTISED_SIZE = (uint16_t)config->edns_buffer_size; 2355 MINIMAL_RESPONSES = config->minimal_responses; 2356 RRSET_ROUNDROBIN = config->rrset_roundrobin; 2357 LOG_TAG_QUERYREPLY = config->log_tag_queryreply; 2358 UNKNOWN_SERVER_NICENESS = config->unknown_server_time_limit; 2359 USEFUL_SERVER_TOP_TIMEOUT = RTT_MAX_TIMEOUT; 2360 BLACKLIST_PENALTY = USEFUL_SERVER_TOP_TIMEOUT*4; 2361 log_set_time_asc(config->log_time_ascii); 2362 autr_permit_small_holddown = config->permit_small_holddown; 2363 stream_wait_max = config->stream_wait_size; 2364 http2_query_buffer_max = config->http_query_buffer_size; 2365 http2_response_buffer_max = config->http_response_buffer_size; 2366 } 2367 2368 void config_lookup_uid(struct config_file* cfg) 2369 { 2370 #ifdef HAVE_GETPWNAM 2371 /* translate username into uid and gid */ 2372 if(cfg->username && cfg->username[0]) { 2373 struct passwd *pwd; 2374 if((pwd = getpwnam(cfg->username)) != NULL) { 2375 cfg_uid = pwd->pw_uid; 2376 cfg_gid = pwd->pw_gid; 2377 } 2378 } 2379 #else 2380 (void)cfg; 2381 #endif 2382 } 2383 2384 /** 2385 * Calculate string length of full pathname in original filesys 2386 * @param fname: the path name to convert. 2387 * Must not be null or empty. 2388 * @param cfg: config struct for chroot and chdir (if set). 2389 * @param use_chdir: if false, only chroot is applied. 2390 * @return length of string. 2391 * remember to allocate one more for 0 at end in mallocs. 2392 */ 2393 static size_t 2394 strlen_after_chroot(const char* fname, struct config_file* cfg, int use_chdir) 2395 { 2396 size_t len = 0; 2397 int slashit = 0; 2398 if(cfg->chrootdir && cfg->chrootdir[0] && 2399 strncmp(cfg->chrootdir, fname, strlen(cfg->chrootdir)) == 0) { 2400 /* already full pathname, return it */ 2401 return strlen(fname); 2402 } 2403 /* chroot */ 2404 if(cfg->chrootdir && cfg->chrootdir[0]) { 2405 /* start with chrootdir */ 2406 len += strlen(cfg->chrootdir); 2407 slashit = 1; 2408 } 2409 /* chdir */ 2410 #ifdef UB_ON_WINDOWS 2411 if(fname[0] != 0 && fname[1] == ':') { 2412 /* full path, no chdir */ 2413 } else 2414 #endif 2415 if(fname[0] == '/' || !use_chdir) { 2416 /* full path, no chdir */ 2417 } else if(cfg->directory && cfg->directory[0]) { 2418 /* prepend chdir */ 2419 if(slashit && cfg->directory[0] != '/') 2420 len++; 2421 if(cfg->chrootdir && cfg->chrootdir[0] && 2422 strncmp(cfg->chrootdir, cfg->directory, 2423 strlen(cfg->chrootdir)) == 0) 2424 len += strlen(cfg->directory)-strlen(cfg->chrootdir); 2425 else len += strlen(cfg->directory); 2426 slashit = 1; 2427 } 2428 /* fname */ 2429 if(slashit && fname[0] != '/') 2430 len++; 2431 len += strlen(fname); 2432 return len; 2433 } 2434 2435 char* 2436 fname_after_chroot(const char* fname, struct config_file* cfg, int use_chdir) 2437 { 2438 size_t len = strlen_after_chroot(fname, cfg, use_chdir)+1; 2439 int slashit = 0; 2440 char* buf = (char*)malloc(len); 2441 if(!buf) 2442 return NULL; 2443 buf[0] = 0; 2444 /* is fname already in chroot ? */ 2445 if(cfg->chrootdir && cfg->chrootdir[0] && 2446 strncmp(cfg->chrootdir, fname, strlen(cfg->chrootdir)) == 0) { 2447 /* already full pathname, return it */ 2448 (void)strlcpy(buf, fname, len); 2449 buf[len-1] = 0; 2450 return buf; 2451 } 2452 /* chroot */ 2453 if(cfg->chrootdir && cfg->chrootdir[0]) { 2454 /* start with chrootdir */ 2455 (void)strlcpy(buf, cfg->chrootdir, len); 2456 slashit = 1; 2457 } 2458 #ifdef UB_ON_WINDOWS 2459 if(fname[0] != 0 && fname[1] == ':') { 2460 /* full path, no chdir */ 2461 } else 2462 #endif 2463 /* chdir */ 2464 if(fname[0] == '/' || !use_chdir) { 2465 /* full path, no chdir */ 2466 } else if(cfg->directory && cfg->directory[0]) { 2467 /* prepend chdir */ 2468 if(slashit && cfg->directory[0] != '/') 2469 (void)strlcat(buf, "/", len); 2470 /* is the directory already in the chroot? */ 2471 if(cfg->chrootdir && cfg->chrootdir[0] && 2472 strncmp(cfg->chrootdir, cfg->directory, 2473 strlen(cfg->chrootdir)) == 0) 2474 (void)strlcat(buf, cfg->directory+strlen(cfg->chrootdir), 2475 len); 2476 else (void)strlcat(buf, cfg->directory, len); 2477 slashit = 1; 2478 } 2479 /* fname */ 2480 if(slashit && fname[0] != '/') 2481 (void)strlcat(buf, "/", len); 2482 (void)strlcat(buf, fname, len); 2483 buf[len-1] = 0; 2484 return buf; 2485 } 2486 2487 /** return next space character in string */ 2488 static char* next_space_pos(const char* str) 2489 { 2490 char* sp = strchr(str, ' '); 2491 char* tab = strchr(str, '\t'); 2492 if(!tab && !sp) 2493 return NULL; 2494 if(!sp) return tab; 2495 if(!tab) return sp; 2496 return (sp<tab)?sp:tab; 2497 } 2498 2499 /** return last space character in string */ 2500 static char* last_space_pos(const char* str) 2501 { 2502 char* sp = strrchr(str, ' '); 2503 char* tab = strrchr(str, '\t'); 2504 if(!tab && !sp) 2505 return NULL; 2506 if(!sp) return tab; 2507 if(!tab) return sp; 2508 return (sp>tab)?sp:tab; 2509 } 2510 2511 int 2512 cfg_parse_local_zone(struct config_file* cfg, const char* val) 2513 { 2514 const char *type, *name_end, *name; 2515 char buf[256]; 2516 2517 /* parse it as: [zone_name] [between stuff] [zone_type] */ 2518 name = val; 2519 while(*name && isspace((unsigned char)*name)) 2520 name++; 2521 if(!*name) { 2522 log_err("syntax error: too short: %s", val); 2523 return 0; 2524 } 2525 name_end = next_space_pos(name); 2526 if(!name_end || !*name_end) { 2527 log_err("syntax error: expected zone type: %s", val); 2528 return 0; 2529 } 2530 if (name_end - name > 255) { 2531 log_err("syntax error: bad zone name: %s", val); 2532 return 0; 2533 } 2534 (void)strlcpy(buf, name, sizeof(buf)); 2535 buf[name_end-name] = '\0'; 2536 2537 type = last_space_pos(name_end); 2538 while(type && *type && isspace((unsigned char)*type)) 2539 type++; 2540 if(!type || !*type) { 2541 log_err("syntax error: expected zone type: %s", val); 2542 return 0; 2543 } 2544 2545 if(strcmp(type, "nodefault")==0) { 2546 return cfg_strlist_insert(&cfg->local_zones_nodefault, 2547 strdup(name)); 2548 #ifdef USE_IPSET 2549 } else if(strcmp(type, "ipset")==0) { 2550 return cfg_strlist_insert(&cfg->local_zones_ipset, 2551 strdup(name)); 2552 #endif 2553 } else { 2554 return cfg_str2list_insert(&cfg->local_zones, strdup(buf), 2555 strdup(type)); 2556 } 2557 } 2558 2559 char* cfg_ptr_reverse(char* str) 2560 { 2561 char* ip, *ip_end; 2562 char* name; 2563 char* result; 2564 char buf[1024]; 2565 struct sockaddr_storage addr; 2566 socklen_t addrlen; 2567 2568 /* parse it as: [IP] [between stuff] [name] */ 2569 ip = str; 2570 while(*ip && isspace((unsigned char)*ip)) 2571 ip++; 2572 if(!*ip) { 2573 log_err("syntax error: too short: %s", str); 2574 return NULL; 2575 } 2576 ip_end = next_space_pos(ip); 2577 if(!ip_end || !*ip_end) { 2578 log_err("syntax error: expected name: %s", str); 2579 return NULL; 2580 } 2581 2582 name = last_space_pos(ip_end); 2583 if(!name || !*name) { 2584 log_err("syntax error: expected name: %s", str); 2585 return NULL; 2586 } 2587 2588 sscanf(ip, "%100s", buf); 2589 buf[sizeof(buf)-1]=0; 2590 2591 if(!ipstrtoaddr(buf, UNBOUND_DNS_PORT, &addr, &addrlen)) { 2592 log_err("syntax error: cannot parse address: %s", str); 2593 return NULL; 2594 } 2595 2596 /* reverse IPv4: 2597 * ddd.ddd.ddd.ddd.in-addr-arpa. 2598 * IPv6: (h.){32}.ip6.arpa. */ 2599 2600 if(addr_is_ip6(&addr, addrlen)) { 2601 uint8_t ad[16]; 2602 const char* hex = "0123456789abcdef"; 2603 char *p = buf; 2604 int i; 2605 memmove(ad, &((struct sockaddr_in6*)&addr)->sin6_addr, 2606 sizeof(ad)); 2607 for(i=15; i>=0; i--) { 2608 uint8_t b = ad[i]; 2609 *p++ = hex[ (b&0x0f) ]; 2610 *p++ = '.'; 2611 *p++ = hex[ (b&0xf0) >> 4 ]; 2612 *p++ = '.'; 2613 } 2614 snprintf(buf+16*4, sizeof(buf)-16*4, "ip6.arpa. "); 2615 } else { 2616 uint8_t ad[4]; 2617 memmove(ad, &((struct sockaddr_in*)&addr)->sin_addr, 2618 sizeof(ad)); 2619 snprintf(buf, sizeof(buf), "%u.%u.%u.%u.in-addr.arpa. ", 2620 (unsigned)ad[3], (unsigned)ad[2], 2621 (unsigned)ad[1], (unsigned)ad[0]); 2622 } 2623 2624 /* printed the reverse address, now the between goop and name on end */ 2625 while(*ip_end && isspace((unsigned char)*ip_end)) 2626 ip_end++; 2627 if(name>ip_end) { 2628 snprintf(buf+strlen(buf), sizeof(buf)-strlen(buf), "%.*s", 2629 (int)(name-ip_end), ip_end); 2630 } 2631 snprintf(buf+strlen(buf), sizeof(buf)-strlen(buf), " PTR %s", name); 2632 2633 result = strdup(buf); 2634 if(!result) { 2635 log_err("out of memory parsing %s", str); 2636 return NULL; 2637 } 2638 return result; 2639 } 2640 2641 #ifdef UB_ON_WINDOWS 2642 char* 2643 w_lookup_reg_str(const char* key, const char* name) 2644 { 2645 HKEY hk = NULL; 2646 DWORD type = 0; 2647 BYTE buf[1024]; 2648 DWORD len = (DWORD)sizeof(buf); 2649 LONG ret; 2650 char* result = NULL; 2651 ret = RegOpenKeyEx(HKEY_LOCAL_MACHINE, key, 0, KEY_READ, &hk); 2652 if(ret == ERROR_FILE_NOT_FOUND) 2653 return NULL; /* key does not exist */ 2654 else if(ret != ERROR_SUCCESS) { 2655 log_err("RegOpenKeyEx failed"); 2656 return NULL; 2657 } 2658 ret = RegQueryValueEx(hk, (LPCTSTR)name, 0, &type, buf, &len); 2659 if(RegCloseKey(hk)) 2660 log_err("RegCloseKey"); 2661 if(ret == ERROR_FILE_NOT_FOUND) 2662 return NULL; /* name does not exist */ 2663 else if(ret != ERROR_SUCCESS) { 2664 log_err("RegQueryValueEx failed"); 2665 return NULL; 2666 } 2667 if(type == REG_SZ || type == REG_MULTI_SZ || type == REG_EXPAND_SZ) { 2668 buf[sizeof(buf)-1] = 0; 2669 buf[sizeof(buf)-2] = 0; /* for multi_sz */ 2670 result = strdup((char*)buf); 2671 if(!result) log_err("out of memory"); 2672 } 2673 return result; 2674 } 2675 2676 void w_config_adjust_directory(struct config_file* cfg) 2677 { 2678 if(cfg->directory && cfg->directory[0]) { 2679 TCHAR dirbuf[2*MAX_PATH+4]; 2680 if(strcmp(cfg->directory, "%EXECUTABLE%") == 0) { 2681 /* get executable path, and if that contains 2682 * directories, snip off the filename part */ 2683 dirbuf[0] = 0; 2684 if(!GetModuleFileName(NULL, dirbuf, MAX_PATH)) 2685 log_err("could not GetModuleFileName"); 2686 if(strrchr(dirbuf, '\\')) { 2687 (strrchr(dirbuf, '\\'))[0] = 0; 2688 } else log_err("GetModuleFileName had no path"); 2689 if(dirbuf[0]) { 2690 /* adjust directory for later lookups to work*/ 2691 free(cfg->directory); 2692 cfg->directory = memdup(dirbuf, strlen(dirbuf)+1); 2693 } 2694 } 2695 } 2696 } 2697 #endif /* UB_ON_WINDOWS */ 2698 2699 int options_remote_is_address(struct config_file* cfg) 2700 { 2701 if(!cfg->remote_control_enable) return 0; 2702 if(!cfg->control_ifs.first) return 1; 2703 if(!cfg->control_ifs.first->str) return 1; 2704 if(cfg->control_ifs.first->str[0] == 0) return 1; 2705 return (cfg->control_ifs.first->str[0] != '/'); 2706 } 2707 2708 /** see if interface is https, its port number == the https port number */ 2709 int 2710 if_is_https(const char* ifname, const char* port, int https_port) 2711 { 2712 char* p = strchr(ifname, '@'); 2713 if(!p && atoi(port) == https_port) 2714 return 1; 2715 if(p && atoi(p+1) == https_port) 2716 return 1; 2717 return 0; 2718 } 2719 2720 /** see if config contains https turned on */ 2721 int cfg_has_https(struct config_file* cfg) 2722 { 2723 int i; 2724 char portbuf[32]; 2725 snprintf(portbuf, sizeof(portbuf), "%d", cfg->port); 2726 for(i = 0; i<cfg->num_ifs; i++) { 2727 if(if_is_https(cfg->ifs[i], portbuf, cfg->https_port)) 2728 return 1; 2729 } 2730 return 0; 2731 } 2732 2733 /** see if interface is PROXYv2, its port number == the proxy port number */ 2734 int 2735 if_is_pp2(const char* ifname, const char* port, 2736 struct config_strlist* proxy_protocol_port) 2737 { 2738 struct config_strlist* s; 2739 char* p = strchr(ifname, '@'); 2740 for(s = proxy_protocol_port; s; s = s->next) { 2741 if(p && atoi(p+1) == atoi(s->str)) 2742 return 1; 2743 if(!p && atoi(port) == atoi(s->str)) 2744 return 1; 2745 } 2746 return 0; 2747 } 2748 2749 /** see if interface is DNSCRYPT, its port number == the dnscrypt port number */ 2750 int 2751 if_is_dnscrypt(const char* ifname, const char* port, int dnscrypt_port) 2752 { 2753 #ifdef USE_DNSCRYPT 2754 return ((strchr(ifname, '@') && 2755 atoi(strchr(ifname, '@')+1) == dnscrypt_port) || 2756 (!strchr(ifname, '@') && atoi(port) == dnscrypt_port)); 2757 #else 2758 (void)ifname; 2759 (void)port; 2760 (void)dnscrypt_port; 2761 return 0; 2762 #endif 2763 } 2764