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