1 /* 2 * util/config_file.c - reads and stores the config file for unbound. 3 * 4 * Copyright (c) 2007, NLnet Labs. All rights reserved. 5 * 6 * This software is open source. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 12 * Redistributions of source code must retain the above copyright notice, 13 * this list of conditions and the following disclaimer. 14 * 15 * Redistributions in binary form must reproduce the above copyright notice, 16 * this list of conditions and the following disclaimer in the documentation 17 * and/or other materials provided with the distribution. 18 * 19 * Neither the name of the NLNET LABS nor the names of its contributors may 20 * be used to endorse or promote products derived from this software without 21 * specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 24 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 25 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 26 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 27 * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 28 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED 29 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 30 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 31 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 32 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 33 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 34 */ 35 36 /** 37 * \file 38 * 39 * This file contains functions for the config file. 40 */ 41 42 #include "config.h" 43 #include <ctype.h> 44 #include <stdarg.h> 45 #ifdef HAVE_TIME_H 46 #include <time.h> 47 #endif 48 #include "util/log.h" 49 #include "util/configyyrename.h" 50 #include "util/config_file.h" 51 #include "configparser.h" 52 #include "util/net_help.h" 53 #include "util/data/msgparse.h" 54 #include "util/module.h" 55 #include "util/regional.h" 56 #include "util/fptr_wlist.h" 57 #include "util/data/dname.h" 58 #include "util/rtt.h" 59 #include "services/cache/infra.h" 60 #include "sldns/wire2str.h" 61 #include "sldns/parseutil.h" 62 #ifdef HAVE_GLOB_H 63 # include <glob.h> 64 #endif 65 #ifdef CLIENT_SUBNET 66 #include "edns-subnet/edns-subnet.h" 67 #endif 68 #ifdef HAVE_PWD_H 69 #include <pwd.h> 70 #endif 71 72 /** from cfg username, after daemonize setup performed */ 73 uid_t cfg_uid = (uid_t)-1; 74 /** from cfg username, after daemonize setup performed */ 75 gid_t cfg_gid = (gid_t)-1; 76 /** for debug allow small timeout values for fast rollovers */ 77 int autr_permit_small_holddown = 0; 78 79 /** global config during parsing */ 80 struct config_parser_state* cfg_parser = 0; 81 82 /** init ports possible for use */ 83 static void init_outgoing_availports(int* array, int num); 84 85 struct config_file* 86 config_create(void) 87 { 88 struct config_file* cfg; 89 cfg = (struct config_file*)calloc(1, sizeof(struct config_file)); 90 if(!cfg) 91 return NULL; 92 /* the defaults if no config is present */ 93 cfg->verbosity = 1; 94 cfg->stat_interval = 0; 95 cfg->stat_cumulative = 0; 96 cfg->stat_extended = 0; 97 cfg->num_threads = 1; 98 cfg->port = UNBOUND_DNS_PORT; 99 cfg->do_ip4 = 1; 100 cfg->do_ip6 = 1; 101 cfg->do_udp = 1; 102 cfg->do_tcp = 1; 103 cfg->tcp_upstream = 0; 104 cfg->udp_upstream_without_downstream = 0; 105 cfg->tcp_mss = 0; 106 cfg->outgoing_tcp_mss = 0; 107 cfg->ssl_service_key = NULL; 108 cfg->ssl_service_pem = NULL; 109 cfg->ssl_port = UNBOUND_DNS_OVER_TLS_PORT; 110 cfg->ssl_upstream = 0; 111 cfg->tls_cert_bundle = NULL; 112 cfg->tls_win_cert = 0; 113 cfg->use_syslog = 1; 114 cfg->log_identity = NULL; /* changed later with argv[0] */ 115 cfg->log_time_ascii = 0; 116 cfg->log_queries = 0; 117 cfg->log_replies = 0; 118 #ifndef USE_WINSOCK 119 # ifdef USE_MINI_EVENT 120 /* select max 1024 sockets */ 121 cfg->outgoing_num_ports = 960; 122 cfg->num_queries_per_thread = 512; 123 # else 124 /* libevent can use many sockets */ 125 cfg->outgoing_num_ports = 4096; 126 cfg->num_queries_per_thread = 1024; 127 # endif 128 cfg->outgoing_num_tcp = 10; 129 cfg->incoming_num_tcp = 10; 130 #else 131 cfg->outgoing_num_ports = 48; /* windows is limited in num fds */ 132 cfg->num_queries_per_thread = 24; 133 cfg->outgoing_num_tcp = 2; /* leaves 64-52=12 for: 4if,1stop,thread4 */ 134 cfg->incoming_num_tcp = 2; 135 #endif 136 cfg->edns_buffer_size = 4096; /* 4k from rfc recommendation */ 137 cfg->msg_buffer_size = 65552; /* 64 k + a small margin */ 138 cfg->msg_cache_size = 4 * 1024 * 1024; 139 cfg->msg_cache_slabs = 4; 140 cfg->jostle_time = 200; 141 cfg->rrset_cache_size = 4 * 1024 * 1024; 142 cfg->rrset_cache_slabs = 4; 143 cfg->host_ttl = 900; 144 cfg->bogus_ttl = 60; 145 cfg->min_ttl = 0; 146 cfg->max_ttl = 3600 * 24; 147 cfg->max_negative_ttl = 3600; 148 cfg->prefetch = 0; 149 cfg->prefetch_key = 0; 150 cfg->infra_cache_slabs = 4; 151 cfg->infra_cache_numhosts = 10000; 152 cfg->infra_cache_min_rtt = 50; 153 cfg->delay_close = 0; 154 if(!(cfg->outgoing_avail_ports = (int*)calloc(65536, sizeof(int)))) 155 goto error_exit; 156 init_outgoing_availports(cfg->outgoing_avail_ports, 65536); 157 if(!(cfg->username = strdup(UB_USERNAME))) goto error_exit; 158 #ifdef HAVE_CHROOT 159 if(!(cfg->chrootdir = strdup(CHROOT_DIR))) goto error_exit; 160 #endif 161 if(!(cfg->directory = strdup(RUN_DIR))) goto error_exit; 162 if(!(cfg->logfile = strdup(""))) goto error_exit; 163 if(!(cfg->pidfile = strdup(PIDFILE))) goto error_exit; 164 if(!(cfg->target_fetch_policy = strdup("3 2 1 0 0"))) goto error_exit; 165 cfg->low_rtt_permil = 0; 166 cfg->low_rtt = 45; 167 cfg->donotqueryaddrs = NULL; 168 cfg->donotquery_localhost = 1; 169 cfg->root_hints = NULL; 170 cfg->use_systemd = 0; 171 cfg->do_daemonize = 1; 172 cfg->if_automatic = 0; 173 cfg->so_rcvbuf = 0; 174 cfg->so_sndbuf = 0; 175 cfg->so_reuseport = 0; 176 cfg->ip_transparent = 0; 177 cfg->ip_freebind = 0; 178 cfg->num_ifs = 0; 179 cfg->ifs = NULL; 180 cfg->num_out_ifs = 0; 181 cfg->out_ifs = NULL; 182 cfg->stubs = NULL; 183 cfg->forwards = NULL; 184 cfg->auths = NULL; 185 #ifdef CLIENT_SUBNET 186 cfg->client_subnet = NULL; 187 cfg->client_subnet_zone = NULL; 188 cfg->client_subnet_opcode = LDNS_EDNS_CLIENT_SUBNET; 189 cfg->client_subnet_always_forward = 0; 190 cfg->max_client_subnet_ipv4 = 24; 191 cfg->max_client_subnet_ipv6 = 56; 192 #endif 193 cfg->views = NULL; 194 cfg->acls = NULL; 195 cfg->harden_short_bufsize = 0; 196 cfg->harden_large_queries = 0; 197 cfg->harden_glue = 1; 198 cfg->harden_dnssec_stripped = 1; 199 cfg->harden_below_nxdomain = 0; 200 cfg->harden_referral_path = 0; 201 cfg->harden_algo_downgrade = 0; 202 cfg->use_caps_bits_for_id = 0; 203 cfg->caps_whitelist = NULL; 204 cfg->private_address = NULL; 205 cfg->private_domain = NULL; 206 cfg->unwanted_threshold = 0; 207 cfg->hide_identity = 0; 208 cfg->hide_version = 0; 209 cfg->hide_trustanchor = 0; 210 cfg->identity = NULL; 211 cfg->version = NULL; 212 cfg->auto_trust_anchor_file_list = NULL; 213 cfg->trust_anchor_file_list = NULL; 214 cfg->trust_anchor_list = NULL; 215 cfg->trusted_keys_file_list = NULL; 216 cfg->trust_anchor_signaling = 1; 217 cfg->root_key_sentinel = 1; 218 cfg->dlv_anchor_file = NULL; 219 cfg->dlv_anchor_list = NULL; 220 cfg->domain_insecure = NULL; 221 cfg->val_date_override = 0; 222 cfg->val_sig_skew_min = 3600; /* at least daylight savings trouble */ 223 cfg->val_sig_skew_max = 86400; /* at most timezone settings trouble */ 224 cfg->val_clean_additional = 1; 225 cfg->val_log_level = 0; 226 cfg->val_log_squelch = 0; 227 cfg->val_permissive_mode = 0; 228 cfg->aggressive_nsec = 0; 229 cfg->ignore_cd = 0; 230 cfg->serve_expired = 0; 231 cfg->add_holddown = 30*24*3600; 232 cfg->del_holddown = 30*24*3600; 233 cfg->keep_missing = 366*24*3600; /* one year plus a little leeway */ 234 cfg->permit_small_holddown = 0; 235 cfg->key_cache_size = 4 * 1024 * 1024; 236 cfg->key_cache_slabs = 4; 237 cfg->neg_cache_size = 1 * 1024 * 1024; 238 cfg->local_zones = NULL; 239 cfg->local_zones_nodefault = NULL; 240 cfg->local_zones_disable_default = 0; 241 cfg->local_data = NULL; 242 cfg->local_zone_overrides = NULL; 243 cfg->unblock_lan_zones = 0; 244 cfg->insecure_lan_zones = 0; 245 cfg->python_script = NULL; 246 cfg->remote_control_enable = 0; 247 cfg->control_ifs.first = NULL; 248 cfg->control_ifs.last = NULL; 249 cfg->control_port = UNBOUND_CONTROL_PORT; 250 cfg->control_use_cert = 1; 251 cfg->minimal_responses = 0; 252 cfg->rrset_roundrobin = 0; 253 cfg->max_udp_size = 4096; 254 if(!(cfg->server_key_file = strdup(RUN_DIR"/unbound_server.key"))) 255 goto error_exit; 256 if(!(cfg->server_cert_file = strdup(RUN_DIR"/unbound_server.pem"))) 257 goto error_exit; 258 if(!(cfg->control_key_file = strdup(RUN_DIR"/unbound_control.key"))) 259 goto error_exit; 260 if(!(cfg->control_cert_file = strdup(RUN_DIR"/unbound_control.pem"))) 261 goto error_exit; 262 263 #ifdef CLIENT_SUBNET 264 if(!(cfg->module_conf = strdup("subnetcache validator iterator"))) goto error_exit; 265 #else 266 if(!(cfg->module_conf = strdup("validator iterator"))) goto error_exit; 267 #endif 268 if(!(cfg->val_nsec3_key_iterations = 269 strdup("1024 150 2048 500 4096 2500"))) goto error_exit; 270 #if defined(DNSTAP_SOCKET_PATH) 271 if(!(cfg->dnstap_socket_path = strdup(DNSTAP_SOCKET_PATH))) 272 goto error_exit; 273 #endif 274 cfg->disable_dnssec_lame_check = 0; 275 cfg->ip_ratelimit = 0; 276 cfg->ratelimit = 0; 277 cfg->ip_ratelimit_slabs = 4; 278 cfg->ratelimit_slabs = 4; 279 cfg->ip_ratelimit_size = 4*1024*1024; 280 cfg->ratelimit_size = 4*1024*1024; 281 cfg->ratelimit_for_domain = NULL; 282 cfg->ratelimit_below_domain = NULL; 283 cfg->ip_ratelimit_factor = 10; 284 cfg->ratelimit_factor = 10; 285 cfg->qname_minimisation = 1; 286 cfg->qname_minimisation_strict = 0; 287 cfg->shm_enable = 0; 288 cfg->shm_key = 11777; 289 cfg->dnscrypt = 0; 290 cfg->dnscrypt_port = 0; 291 cfg->dnscrypt_provider = NULL; 292 cfg->dnscrypt_provider_cert = NULL; 293 cfg->dnscrypt_provider_cert_rotated = NULL; 294 cfg->dnscrypt_secret_key = NULL; 295 cfg->dnscrypt_shared_secret_cache_size = 4*1024*1024; 296 cfg->dnscrypt_shared_secret_cache_slabs = 4; 297 cfg->dnscrypt_nonce_cache_size = 4*1024*1024; 298 cfg->dnscrypt_nonce_cache_slabs = 4; 299 #ifdef USE_IPSECMOD 300 cfg->ipsecmod_enabled = 1; 301 cfg->ipsecmod_ignore_bogus = 0; 302 cfg->ipsecmod_hook = NULL; 303 cfg->ipsecmod_max_ttl = 3600; 304 cfg->ipsecmod_whitelist = NULL; 305 cfg->ipsecmod_strict = 0; 306 #endif 307 #ifdef USE_CACHEDB 308 cfg->cachedb_backend = NULL; 309 cfg->cachedb_secret = NULL; 310 #endif 311 return cfg; 312 error_exit: 313 config_delete(cfg); 314 return NULL; 315 } 316 317 struct config_file* config_create_forlib(void) 318 { 319 struct config_file* cfg = config_create(); 320 if(!cfg) return NULL; 321 /* modifications for library use, less verbose, less memory */ 322 free(cfg->chrootdir); 323 cfg->chrootdir = NULL; 324 cfg->verbosity = 0; 325 cfg->outgoing_num_ports = 16; /* in library use, this is 'reasonable' 326 and probably within the ulimit(maxfds) of the user */ 327 cfg->outgoing_num_tcp = 2; 328 cfg->msg_cache_size = 1024*1024; 329 cfg->msg_cache_slabs = 1; 330 cfg->rrset_cache_size = 1024*1024; 331 cfg->rrset_cache_slabs = 1; 332 cfg->infra_cache_slabs = 1; 333 cfg->use_syslog = 0; 334 cfg->key_cache_size = 1024*1024; 335 cfg->key_cache_slabs = 1; 336 cfg->neg_cache_size = 100 * 1024; 337 cfg->donotquery_localhost = 0; /* allow, so that you can ask a 338 forward nameserver running on localhost */ 339 cfg->val_log_level = 2; /* to fill why_bogus with */ 340 cfg->val_log_squelch = 1; 341 return cfg; 342 } 343 344 /** check that the value passed is >= 0 */ 345 #define IS_NUMBER_OR_ZERO \ 346 if(atoi(val) == 0 && strcmp(val, "0") != 0) return 0 347 /** check that the value passed is > 0 */ 348 #define IS_NONZERO_NUMBER \ 349 if(atoi(val) == 0) return 0 350 /** check that the value passed is not 0 and a power of 2 */ 351 #define IS_POW2_NUMBER \ 352 if(atoi(val) == 0 || !is_pow2((size_t)atoi(val))) return 0 353 /** check that the value passed is yes or no */ 354 #define IS_YES_OR_NO \ 355 if(strcmp(val, "yes") != 0 && strcmp(val, "no") != 0) return 0 356 /** put integer_or_zero into variable */ 357 #define S_NUMBER_OR_ZERO(str, var) if(strcmp(opt, str) == 0) \ 358 { IS_NUMBER_OR_ZERO; cfg->var = atoi(val); } 359 /** put integer_nonzero into variable */ 360 #define S_NUMBER_NONZERO(str, var) if(strcmp(opt, str) == 0) \ 361 { IS_NONZERO_NUMBER; cfg->var = atoi(val); } 362 /** put integer_or_zero into unsigned */ 363 #define S_UNSIGNED_OR_ZERO(str, var) if(strcmp(opt, str) == 0) \ 364 { IS_NUMBER_OR_ZERO; cfg->var = (unsigned)atoi(val); } 365 /** put integer_or_zero into size_t */ 366 #define S_SIZET_OR_ZERO(str, var) if(strcmp(opt, str) == 0) \ 367 { IS_NUMBER_OR_ZERO; cfg->var = (size_t)atoi(val); } 368 /** put integer_nonzero into size_t */ 369 #define S_SIZET_NONZERO(str, var) if(strcmp(opt, str) == 0) \ 370 { IS_NONZERO_NUMBER; cfg->var = (size_t)atoi(val); } 371 /** put yesno into variable */ 372 #define S_YNO(str, var) if(strcmp(opt, str) == 0) \ 373 { IS_YES_OR_NO; cfg->var = (strcmp(val, "yes") == 0); } 374 /** put memsize into variable */ 375 #define S_MEMSIZE(str, var) if(strcmp(opt, str)==0) \ 376 { return cfg_parse_memsize(val, &cfg->var); } 377 /** put pow2 number into variable */ 378 #define S_POW2(str, var) if(strcmp(opt, str)==0) \ 379 { IS_POW2_NUMBER; cfg->var = (size_t)atoi(val); } 380 /** put string into variable */ 381 #define S_STR(str, var) if(strcmp(opt, str)==0) \ 382 { free(cfg->var); return (cfg->var = strdup(val)) != NULL; } 383 /** put string into strlist */ 384 #define S_STRLIST(str, var) if(strcmp(opt, str)==0) \ 385 { return cfg_strlist_insert(&cfg->var, strdup(val)); } 386 /** put string into strlist if not present yet*/ 387 #define S_STRLIST_UNIQ(str, var) if(strcmp(opt, str)==0) \ 388 { if(cfg_strlist_find(cfg->var, val)) { return 0;} \ 389 return cfg_strlist_insert(&cfg->var, strdup(val)); } 390 /** append string to strlist */ 391 #define S_STRLIST_APPEND(str, var) if(strcmp(opt, str)==0) \ 392 { return cfg_strlist_append(&cfg->var, strdup(val)); } 393 394 int config_set_option(struct config_file* cfg, const char* opt, 395 const char* val) 396 { 397 char buf[64]; 398 if(!opt) return 0; 399 if(opt[strlen(opt)-1] != ':' && strlen(opt)+2<sizeof(buf)) { 400 snprintf(buf, sizeof(buf), "%s:", opt); 401 opt = buf; 402 } 403 S_NUMBER_OR_ZERO("verbosity:", verbosity) 404 else if(strcmp(opt, "statistics-interval:") == 0) { 405 if(strcmp(val, "0") == 0 || strcmp(val, "") == 0) 406 cfg->stat_interval = 0; 407 else if(atoi(val) == 0) 408 return 0; 409 else cfg->stat_interval = atoi(val); 410 } else if(strcmp(opt, "num_threads:") == 0) { 411 /* not supported, library must have 1 thread in bgworker */ 412 return 0; 413 } else if(strcmp(opt, "outgoing-port-permit:") == 0) { 414 return cfg_mark_ports(val, 1, 415 cfg->outgoing_avail_ports, 65536); 416 } else if(strcmp(opt, "outgoing-port-avoid:") == 0) { 417 return cfg_mark_ports(val, 0, 418 cfg->outgoing_avail_ports, 65536); 419 } else if(strcmp(opt, "local-zone:") == 0) { 420 return cfg_parse_local_zone(cfg, val); 421 } else if(strcmp(opt, "val-override-date:") == 0) { 422 if(strcmp(val, "") == 0 || strcmp(val, "0") == 0) { 423 cfg->val_date_override = 0; 424 } else if(strlen(val) == 14) { 425 cfg->val_date_override = cfg_convert_timeval(val); 426 return cfg->val_date_override != 0; 427 } else { 428 if(atoi(val) == 0) return 0; 429 cfg->val_date_override = (uint32_t)atoi(val); 430 } 431 } else if(strcmp(opt, "local-data-ptr:") == 0) { 432 char* ptr = cfg_ptr_reverse((char*)opt); 433 return cfg_strlist_insert(&cfg->local_data, ptr); 434 } else if(strcmp(opt, "logfile:") == 0) { 435 cfg->use_syslog = 0; 436 free(cfg->logfile); 437 return (cfg->logfile = strdup(val)) != NULL; 438 } 439 else if(strcmp(opt, "log-time-ascii:") == 0) 440 { IS_YES_OR_NO; cfg->log_time_ascii = (strcmp(val, "yes") == 0); 441 log_set_time_asc(cfg->log_time_ascii); } 442 else S_SIZET_NONZERO("max-udp-size:", max_udp_size) 443 else S_YNO("use-syslog:", use_syslog) 444 else S_STR("log-identity:", log_identity) 445 else S_YNO("extended-statistics:", stat_extended) 446 else S_YNO("statistics-cumulative:", stat_cumulative) 447 else S_YNO("shm-enable:", shm_enable) 448 else S_NUMBER_OR_ZERO("shm-key:", shm_key) 449 else S_YNO("do-ip4:", do_ip4) 450 else S_YNO("do-ip6:", do_ip6) 451 else S_YNO("do-udp:", do_udp) 452 else S_YNO("do-tcp:", do_tcp) 453 else S_YNO("tcp-upstream:", tcp_upstream) 454 else S_YNO("udp-upstream-without-downstream:", 455 udp_upstream_without_downstream) 456 else S_NUMBER_NONZERO("tcp-mss:", tcp_mss) 457 else S_NUMBER_NONZERO("outgoing-tcp-mss:", outgoing_tcp_mss) 458 else S_YNO("ssl-upstream:", ssl_upstream) 459 else S_STR("ssl-service-key:", ssl_service_key) 460 else S_STR("ssl-service-pem:", ssl_service_pem) 461 else S_NUMBER_NONZERO("ssl-port:", ssl_port) 462 else S_STR("tls-cert-bundle:", tls_cert_bundle) 463 else S_YNO("tls-win-cert:", tls_win_cert) 464 else S_STRLIST("additional-tls-port:", tls_additional_port) 465 else S_STRLIST("tls-additional-ports:", tls_additional_port) 466 else S_STRLIST("tls-additional-port:", tls_additional_port) 467 else S_YNO("interface-automatic:", if_automatic) 468 else S_YNO("use-systemd:", use_systemd) 469 else S_YNO("do-daemonize:", do_daemonize) 470 else S_NUMBER_NONZERO("port:", port) 471 else S_NUMBER_NONZERO("outgoing-range:", outgoing_num_ports) 472 else S_SIZET_OR_ZERO("outgoing-num-tcp:", outgoing_num_tcp) 473 else S_SIZET_OR_ZERO("incoming-num-tcp:", incoming_num_tcp) 474 else S_SIZET_NONZERO("edns-buffer-size:", edns_buffer_size) 475 else S_SIZET_NONZERO("msg-buffer-size:", msg_buffer_size) 476 else S_MEMSIZE("msg-cache-size:", msg_cache_size) 477 else S_POW2("msg-cache-slabs:", msg_cache_slabs) 478 else S_SIZET_NONZERO("num-queries-per-thread:",num_queries_per_thread) 479 else S_SIZET_OR_ZERO("jostle-timeout:", jostle_time) 480 else S_MEMSIZE("so-rcvbuf:", so_rcvbuf) 481 else S_MEMSIZE("so-sndbuf:", so_sndbuf) 482 else S_YNO("so-reuseport:", so_reuseport) 483 else S_YNO("ip-transparent:", ip_transparent) 484 else S_YNO("ip-freebind:", ip_freebind) 485 else S_MEMSIZE("rrset-cache-size:", rrset_cache_size) 486 else S_POW2("rrset-cache-slabs:", rrset_cache_slabs) 487 else S_YNO("prefetch:", prefetch) 488 else S_YNO("prefetch-key:", prefetch_key) 489 else if(strcmp(opt, "cache-max-ttl:") == 0) 490 { IS_NUMBER_OR_ZERO; cfg->max_ttl = atoi(val); MAX_TTL=(time_t)cfg->max_ttl;} 491 else if(strcmp(opt, "cache-max-negative-ttl:") == 0) 492 { IS_NUMBER_OR_ZERO; cfg->max_negative_ttl = atoi(val); MAX_NEG_TTL=(time_t)cfg->max_negative_ttl;} 493 else if(strcmp(opt, "cache-min-ttl:") == 0) 494 { IS_NUMBER_OR_ZERO; cfg->min_ttl = atoi(val); MIN_TTL=(time_t)cfg->min_ttl;} 495 else if(strcmp(opt, "infra-cache-min-rtt:") == 0) { 496 IS_NUMBER_OR_ZERO; cfg->infra_cache_min_rtt = atoi(val); 497 RTT_MIN_TIMEOUT=cfg->infra_cache_min_rtt; 498 } 499 else S_NUMBER_OR_ZERO("infra-host-ttl:", host_ttl) 500 else S_POW2("infra-cache-slabs:", infra_cache_slabs) 501 else S_SIZET_NONZERO("infra-cache-numhosts:", infra_cache_numhosts) 502 else S_NUMBER_OR_ZERO("delay-close:", delay_close) 503 else S_STR("chroot:", chrootdir) 504 else S_STR("username:", username) 505 else S_STR("directory:", directory) 506 else S_STR("pidfile:", pidfile) 507 else S_YNO("hide-identity:", hide_identity) 508 else S_YNO("hide-version:", hide_version) 509 else S_YNO("hide-trustanchor:", hide_trustanchor) 510 else S_STR("identity:", identity) 511 else S_STR("version:", version) 512 else S_STRLIST("root-hints:", root_hints) 513 else S_STR("target-fetch-policy:", target_fetch_policy) 514 else S_YNO("harden-glue:", harden_glue) 515 else S_YNO("harden-short-bufsize:", harden_short_bufsize) 516 else S_YNO("harden-large-queries:", harden_large_queries) 517 else S_YNO("harden-dnssec-stripped:", harden_dnssec_stripped) 518 else S_YNO("harden-below-nxdomain:", harden_below_nxdomain) 519 else S_YNO("harden-referral-path:", harden_referral_path) 520 else S_YNO("harden-algo-downgrade:", harden_algo_downgrade) 521 else S_YNO("use-caps-for-id:", use_caps_bits_for_id) 522 else S_STRLIST("caps-whitelist:", caps_whitelist) 523 else S_SIZET_OR_ZERO("unwanted-reply-threshold:", unwanted_threshold) 524 else S_STRLIST("private-address:", private_address) 525 else S_STRLIST("private-domain:", private_domain) 526 else S_YNO("do-not-query-localhost:", donotquery_localhost) 527 else S_STRLIST("do-not-query-address:", donotqueryaddrs) 528 else S_STRLIST("auto-trust-anchor-file:", auto_trust_anchor_file_list) 529 else S_STRLIST("trust-anchor-file:", trust_anchor_file_list) 530 else S_STRLIST("trust-anchor:", trust_anchor_list) 531 else S_STRLIST("trusted-keys-file:", trusted_keys_file_list) 532 else S_YNO("trust-anchor-signaling:", trust_anchor_signaling) 533 else S_YNO("root-key-sentinel:", root_key_sentinel) 534 else S_STR("dlv-anchor-file:", dlv_anchor_file) 535 else S_STRLIST("dlv-anchor:", dlv_anchor_list) 536 else S_STRLIST("domain-insecure:", domain_insecure) 537 else S_NUMBER_OR_ZERO("val-bogus-ttl:", bogus_ttl) 538 else S_YNO("val-clean-additional:", val_clean_additional) 539 else S_NUMBER_OR_ZERO("val-log-level:", val_log_level) 540 else S_YNO("val-log-squelch:", val_log_squelch) 541 else S_YNO("log-queries:", log_queries) 542 else S_YNO("log-replies:", log_replies) 543 else S_YNO("val-permissive-mode:", val_permissive_mode) 544 else S_YNO("aggressive-nsec:", aggressive_nsec) 545 else S_YNO("ignore-cd-flag:", ignore_cd) 546 else S_YNO("serve-expired:", serve_expired) 547 else S_STR("val-nsec3-keysize-iterations:", val_nsec3_key_iterations) 548 else S_UNSIGNED_OR_ZERO("add-holddown:", add_holddown) 549 else S_UNSIGNED_OR_ZERO("del-holddown:", del_holddown) 550 else S_UNSIGNED_OR_ZERO("keep-missing:", keep_missing) 551 else if(strcmp(opt, "permit-small-holddown:") == 0) 552 { IS_YES_OR_NO; cfg->permit_small_holddown = (strcmp(val, "yes") == 0); 553 autr_permit_small_holddown = cfg->permit_small_holddown; } 554 else S_MEMSIZE("key-cache-size:", key_cache_size) 555 else S_POW2("key-cache-slabs:", key_cache_slabs) 556 else S_MEMSIZE("neg-cache-size:", neg_cache_size) 557 else S_YNO("minimal-responses:", minimal_responses) 558 else S_YNO("rrset-roundrobin:", rrset_roundrobin) 559 else S_STRLIST("local-data:", local_data) 560 else S_YNO("unblock-lan-zones:", unblock_lan_zones) 561 else S_YNO("insecure-lan-zones:", insecure_lan_zones) 562 else S_YNO("control-enable:", remote_control_enable) 563 else S_STRLIST_APPEND("control-interface:", control_ifs) 564 else S_NUMBER_NONZERO("control-port:", control_port) 565 else S_STR("server-key-file:", server_key_file) 566 else S_STR("server-cert-file:", server_cert_file) 567 else S_STR("control-key-file:", control_key_file) 568 else S_STR("control-cert-file:", control_cert_file) 569 else S_STR("module-config:", module_conf) 570 else S_STR("python-script:", python_script) 571 else S_YNO("disable-dnssec-lame-check:", disable_dnssec_lame_check) 572 #ifdef CLIENT_SUBNET 573 /* Can't set max subnet prefix here, since that value is used when 574 * generating the address tree. */ 575 /* No client-subnet-always-forward here, module registration depends on 576 * this option. */ 577 #endif 578 #ifdef USE_DNSTAP 579 else S_YNO("dnstap-enable:", dnstap) 580 else S_STR("dnstap-socket-path:", dnstap_socket_path) 581 else S_YNO("dnstap-send-identity:", dnstap_send_identity) 582 else S_YNO("dnstap-send-version:", dnstap_send_version) 583 else S_STR("dnstap-identity:", dnstap_identity) 584 else S_STR("dnstap-version:", dnstap_version) 585 else S_YNO("dnstap-log-resolver-query-messages:", 586 dnstap_log_resolver_query_messages) 587 else S_YNO("dnstap-log-resolver-response-messages:", 588 dnstap_log_resolver_response_messages) 589 else S_YNO("dnstap-log-client-query-messages:", 590 dnstap_log_client_query_messages) 591 else S_YNO("dnstap-log-client-response-messages:", 592 dnstap_log_client_response_messages) 593 else S_YNO("dnstap-log-forwarder-query-messages:", 594 dnstap_log_forwarder_query_messages) 595 else S_YNO("dnstap-log-forwarder-response-messages:", 596 dnstap_log_forwarder_response_messages) 597 #endif 598 #ifdef USE_DNSCRYPT 599 else S_YNO("dnscrypt-enable:", dnscrypt) 600 else S_NUMBER_NONZERO("dnscrypt-port:", dnscrypt_port) 601 else S_STR("dnscrypt-provider:", dnscrypt_provider) 602 else S_STRLIST_UNIQ("dnscrypt-provider-cert:", dnscrypt_provider_cert) 603 else S_STRLIST("dnscrypt-provider-cert-rotated:", dnscrypt_provider_cert_rotated) 604 else S_STRLIST_UNIQ("dnscrypt-secret-key:", dnscrypt_secret_key) 605 else S_MEMSIZE("dnscrypt-shared-secret-cache-size:", 606 dnscrypt_shared_secret_cache_size) 607 else S_POW2("dnscrypt-shared-secret-cache-slabs:", 608 dnscrypt_shared_secret_cache_slabs) 609 else S_MEMSIZE("dnscrypt-nonce-cache-size:", 610 dnscrypt_nonce_cache_size) 611 else S_POW2("dnscrypt-nonce-cache-slabs:", 612 dnscrypt_nonce_cache_slabs) 613 #endif 614 else if(strcmp(opt, "ip-ratelimit:") == 0) { 615 IS_NUMBER_OR_ZERO; cfg->ip_ratelimit = atoi(val); 616 infra_ip_ratelimit=cfg->ip_ratelimit; 617 } 618 else if(strcmp(opt, "ratelimit:") == 0) { 619 IS_NUMBER_OR_ZERO; cfg->ratelimit = atoi(val); 620 infra_dp_ratelimit=cfg->ratelimit; 621 } 622 else S_MEMSIZE("ip-ratelimit-size:", ip_ratelimit_size) 623 else S_MEMSIZE("ratelimit-size:", ratelimit_size) 624 else S_POW2("ip-ratelimit-slabs:", ip_ratelimit_slabs) 625 else S_POW2("ratelimit-slabs:", ratelimit_slabs) 626 else S_NUMBER_OR_ZERO("ip-ratelimit-factor:", ip_ratelimit_factor) 627 else S_NUMBER_OR_ZERO("ratelimit-factor:", ratelimit_factor) 628 else S_NUMBER_OR_ZERO("low-rtt:", low_rtt) 629 else S_NUMBER_OR_ZERO("low-rtt-pct:", low_rtt_permil) 630 else S_NUMBER_OR_ZERO("low-rtt-permil:", low_rtt_permil) 631 else S_YNO("qname-minimisation:", qname_minimisation) 632 else S_YNO("qname-minimisation-strict:", qname_minimisation_strict) 633 #ifdef USE_IPSECMOD 634 else S_YNO("ipsecmod-enabled:", ipsecmod_enabled) 635 else S_YNO("ipsecmod-ignore-bogus:", ipsecmod_ignore_bogus) 636 else if(strcmp(opt, "ipsecmod-max-ttl:") == 0) 637 { IS_NUMBER_OR_ZERO; cfg->ipsecmod_max_ttl = atoi(val); } 638 else S_YNO("ipsecmod-strict:", ipsecmod_strict) 639 #endif 640 else if(strcmp(opt, "define-tag:") ==0) { 641 return config_add_tag(cfg, val); 642 /* val_sig_skew_min and max are copied into val_env during init, 643 * so this does not update val_env with set_option */ 644 } else if(strcmp(opt, "val-sig-skew-min:") == 0) 645 { IS_NUMBER_OR_ZERO; cfg->val_sig_skew_min = (int32_t)atoi(val); } 646 else if(strcmp(opt, "val-sig-skew-max:") == 0) 647 { IS_NUMBER_OR_ZERO; cfg->val_sig_skew_max = (int32_t)atoi(val); } 648 else if (strcmp(opt, "outgoing-interface:") == 0) { 649 char* d = strdup(val); 650 char** oi = 651 (char**)reallocarray(NULL, (size_t)cfg->num_out_ifs+1, sizeof(char*)); 652 if(!d || !oi) { free(d); free(oi); return -1; } 653 if(cfg->out_ifs && cfg->num_out_ifs) { 654 memmove(oi, cfg->out_ifs, cfg->num_out_ifs*sizeof(char*)); 655 free(cfg->out_ifs); 656 } 657 oi[cfg->num_out_ifs++] = d; 658 cfg->out_ifs = oi; 659 } else { 660 /* unknown or unsupported (from the set_option interface): 661 * interface, outgoing-interface, access-control, 662 * stub-zone, name, stub-addr, stub-host, stub-prime 663 * forward-first, stub-first, forward-ssl-upstream, 664 * stub-ssl-upstream, forward-zone, auth-zone 665 * name, forward-addr, forward-host, 666 * ratelimit-for-domain, ratelimit-below-domain, 667 * local-zone-tag, access-control-view, 668 * send-client-subnet, client-subnet-always-forward, 669 * max-client-subnet-ipv4, max-client-subnet-ipv6, ipsecmod_hook, 670 * ipsecmod_whitelist. */ 671 return 0; 672 } 673 return 1; 674 } 675 676 void config_print_func(char* line, void* arg) 677 { 678 FILE* f = (FILE*)arg; 679 (void)fprintf(f, "%s\n", line); 680 } 681 682 /** collate func arg */ 683 struct config_collate_arg { 684 /** list of result items */ 685 struct config_strlist_head list; 686 /** if a malloc error occurred, 0 is OK */ 687 int status; 688 }; 689 690 void config_collate_func(char* line, void* arg) 691 { 692 struct config_collate_arg* m = (struct config_collate_arg*)arg; 693 if(m->status) 694 return; 695 if(!cfg_strlist_append(&m->list, strdup(line))) 696 m->status = 1; 697 } 698 699 int config_get_option_list(struct config_file* cfg, const char* opt, 700 struct config_strlist** list) 701 { 702 struct config_collate_arg m; 703 memset(&m, 0, sizeof(m)); 704 *list = NULL; 705 if(!config_get_option(cfg, opt, config_collate_func, &m)) 706 return 1; 707 if(m.status) { 708 config_delstrlist(m.list.first); 709 return 2; 710 } 711 *list = m.list.first; 712 return 0; 713 } 714 715 int 716 config_get_option_collate(struct config_file* cfg, const char* opt, char** str) 717 { 718 struct config_strlist* list = NULL; 719 int r; 720 *str = NULL; 721 if((r = config_get_option_list(cfg, opt, &list)) != 0) 722 return r; 723 *str = config_collate_cat(list); 724 config_delstrlist(list); 725 if(!*str) return 2; 726 return 0; 727 } 728 729 char* 730 config_collate_cat(struct config_strlist* list) 731 { 732 size_t total = 0, left; 733 struct config_strlist* s; 734 char *r, *w; 735 if(!list) /* no elements */ 736 return strdup(""); 737 if(list->next == NULL) /* one element , no newline at end. */ 738 return strdup(list->str); 739 /* count total length */ 740 for(s=list; s; s=s->next) 741 total += strlen(s->str) + 1; /* len + newline */ 742 left = total+1; /* one extra for nul at end */ 743 r = malloc(left); 744 if(!r) 745 return NULL; 746 w = r; 747 for(s=list; s; s=s->next) { 748 size_t this = strlen(s->str); 749 if(this+2 > left) { /* sanity check */ 750 free(r); 751 return NULL; 752 } 753 snprintf(w, left, "%s\n", s->str); 754 this = strlen(w); 755 w += this; 756 left -= this; 757 } 758 return r; 759 } 760 761 /** compare and print decimal option */ 762 #define O_DEC(opt, str, var) if(strcmp(opt, str)==0) \ 763 {snprintf(buf, len, "%d", (int)cfg->var); \ 764 func(buf, arg);} 765 /** compare and print unsigned option */ 766 #define O_UNS(opt, str, var) if(strcmp(opt, str)==0) \ 767 {snprintf(buf, len, "%u", (unsigned)cfg->var); \ 768 func(buf, arg);} 769 /** compare and print yesno option */ 770 #define O_YNO(opt, str, var) if(strcmp(opt, str)==0) \ 771 {func(cfg->var?"yes":"no", arg);} 772 /** compare and print string option */ 773 #define O_STR(opt, str, var) if(strcmp(opt, str)==0) \ 774 {func(cfg->var?cfg->var:"", arg);} 775 /** compare and print array option */ 776 #define O_IFC(opt, str, num, arr) if(strcmp(opt, str)==0) \ 777 {int i; for(i=0; i<cfg->num; i++) func(cfg->arr[i], arg);} 778 /** compare and print memorysize option */ 779 #define O_MEM(opt, str, var) if(strcmp(opt, str)==0) { \ 780 if(cfg->var > 1024*1024*1024) { \ 781 size_t f=cfg->var/(size_t)1000000, b=cfg->var%(size_t)1000000; \ 782 snprintf(buf, len, "%u%6.6u", (unsigned)f, (unsigned)b); \ 783 } else snprintf(buf, len, "%u", (unsigned)cfg->var); \ 784 func(buf, arg);} 785 /** compare and print list option */ 786 #define O_LST(opt, name, lst) if(strcmp(opt, name)==0) { \ 787 struct config_strlist* p = cfg->lst; \ 788 for(p = cfg->lst; p; p = p->next) \ 789 func(p->str, arg); \ 790 } 791 /** compare and print list option */ 792 #define O_LS2(opt, name, lst) if(strcmp(opt, name)==0) { \ 793 struct config_str2list* p = cfg->lst; \ 794 for(p = cfg->lst; p; p = p->next) { \ 795 snprintf(buf, len, "%s %s", p->str, p->str2); \ 796 func(buf, arg); \ 797 } \ 798 } 799 /** compare and print list option */ 800 #define O_LS3(opt, name, lst) if(strcmp(opt, name)==0) { \ 801 struct config_str3list* p = cfg->lst; \ 802 for(p = cfg->lst; p; p = p->next) { \ 803 snprintf(buf, len, "%s %s %s", p->str, p->str2, p->str3); \ 804 func(buf, arg); \ 805 } \ 806 } 807 /** compare and print taglist option */ 808 #define O_LTG(opt, name, lst) if(strcmp(opt, name)==0) { \ 809 char* tmpstr = NULL; \ 810 struct config_strbytelist *p = cfg->lst; \ 811 for(p = cfg->lst; p; p = p->next) {\ 812 tmpstr = config_taglist2str(cfg, p->str2, p->str2len); \ 813 if(tmpstr) {\ 814 snprintf(buf, len, "%s %s", p->str, tmpstr); \ 815 func(buf, arg); \ 816 free(tmpstr); \ 817 } \ 818 } \ 819 } 820 821 int 822 config_get_option(struct config_file* cfg, const char* opt, 823 void (*func)(char*,void*), void* arg) 824 { 825 char buf[1024], nopt[64]; 826 size_t len = sizeof(buf); 827 if(opt && opt[strlen(opt)-1] == ':' && strlen(opt)<sizeof(nopt)) { 828 memmove(nopt, opt, strlen(opt)); 829 nopt[strlen(opt)-1] = 0; 830 opt = nopt; 831 } 832 fptr_ok(fptr_whitelist_print_func(func)); 833 O_DEC(opt, "verbosity", verbosity) 834 else O_DEC(opt, "statistics-interval", stat_interval) 835 else O_YNO(opt, "statistics-cumulative", stat_cumulative) 836 else O_YNO(opt, "extended-statistics", stat_extended) 837 else O_YNO(opt, "shm-enable", shm_enable) 838 else O_DEC(opt, "shm-key", shm_key) 839 else O_YNO(opt, "use-syslog", use_syslog) 840 else O_STR(opt, "log-identity", log_identity) 841 else O_YNO(opt, "log-time-ascii", log_time_ascii) 842 else O_DEC(opt, "num-threads", num_threads) 843 else O_IFC(opt, "interface", num_ifs, ifs) 844 else O_IFC(opt, "outgoing-interface", num_out_ifs, out_ifs) 845 else O_YNO(opt, "interface-automatic", if_automatic) 846 else O_DEC(opt, "port", port) 847 else O_DEC(opt, "outgoing-range", outgoing_num_ports) 848 else O_DEC(opt, "outgoing-num-tcp", outgoing_num_tcp) 849 else O_DEC(opt, "incoming-num-tcp", incoming_num_tcp) 850 else O_DEC(opt, "edns-buffer-size", edns_buffer_size) 851 else O_DEC(opt, "msg-buffer-size", msg_buffer_size) 852 else O_MEM(opt, "msg-cache-size", msg_cache_size) 853 else O_DEC(opt, "msg-cache-slabs", msg_cache_slabs) 854 else O_DEC(opt, "num-queries-per-thread", num_queries_per_thread) 855 else O_UNS(opt, "jostle-timeout", jostle_time) 856 else O_MEM(opt, "so-rcvbuf", so_rcvbuf) 857 else O_MEM(opt, "so-sndbuf", so_sndbuf) 858 else O_YNO(opt, "so-reuseport", so_reuseport) 859 else O_YNO(opt, "ip-transparent", ip_transparent) 860 else O_YNO(opt, "ip-freebind", ip_freebind) 861 else O_MEM(opt, "rrset-cache-size", rrset_cache_size) 862 else O_DEC(opt, "rrset-cache-slabs", rrset_cache_slabs) 863 else O_YNO(opt, "prefetch-key", prefetch_key) 864 else O_YNO(opt, "prefetch", prefetch) 865 else O_DEC(opt, "cache-max-ttl", max_ttl) 866 else O_DEC(opt, "cache-max-negative-ttl", max_negative_ttl) 867 else O_DEC(opt, "cache-min-ttl", min_ttl) 868 else O_DEC(opt, "infra-host-ttl", host_ttl) 869 else O_DEC(opt, "infra-cache-slabs", infra_cache_slabs) 870 else O_DEC(opt, "infra-cache-min-rtt", infra_cache_min_rtt) 871 else O_MEM(opt, "infra-cache-numhosts", infra_cache_numhosts) 872 else O_UNS(opt, "delay-close", delay_close) 873 else O_YNO(opt, "do-ip4", do_ip4) 874 else O_YNO(opt, "do-ip6", do_ip6) 875 else O_YNO(opt, "do-udp", do_udp) 876 else O_YNO(opt, "do-tcp", do_tcp) 877 else O_YNO(opt, "tcp-upstream", tcp_upstream) 878 else O_YNO(opt, "udp-upstream-without-downstream", udp_upstream_without_downstream) 879 else O_DEC(opt, "tcp-mss", tcp_mss) 880 else O_DEC(opt, "outgoing-tcp-mss", outgoing_tcp_mss) 881 else O_YNO(opt, "ssl-upstream", ssl_upstream) 882 else O_STR(opt, "ssl-service-key", ssl_service_key) 883 else O_STR(opt, "ssl-service-pem", ssl_service_pem) 884 else O_DEC(opt, "ssl-port", ssl_port) 885 else O_STR(opt, "tls-cert-bundle", tls_cert_bundle) 886 else O_YNO(opt, "tls-win-cert", tls_win_cert) 887 else O_LST(opt, "tls-additional-port", tls_additional_port) 888 else O_YNO(opt, "use-systemd", use_systemd) 889 else O_YNO(opt, "do-daemonize", do_daemonize) 890 else O_STR(opt, "chroot", chrootdir) 891 else O_STR(opt, "username", username) 892 else O_STR(opt, "directory", directory) 893 else O_STR(opt, "logfile", logfile) 894 else O_YNO(opt, "log-queries", log_queries) 895 else O_YNO(opt, "log-replies", log_replies) 896 else O_STR(opt, "pidfile", pidfile) 897 else O_YNO(opt, "hide-identity", hide_identity) 898 else O_YNO(opt, "hide-version", hide_version) 899 else O_YNO(opt, "hide-trustanchor", hide_trustanchor) 900 else O_STR(opt, "identity", identity) 901 else O_STR(opt, "version", version) 902 else O_STR(opt, "target-fetch-policy", target_fetch_policy) 903 else O_YNO(opt, "harden-short-bufsize", harden_short_bufsize) 904 else O_YNO(opt, "harden-large-queries", harden_large_queries) 905 else O_YNO(opt, "harden-glue", harden_glue) 906 else O_YNO(opt, "harden-dnssec-stripped", harden_dnssec_stripped) 907 else O_YNO(opt, "harden-below-nxdomain", harden_below_nxdomain) 908 else O_YNO(opt, "harden-referral-path", harden_referral_path) 909 else O_YNO(opt, "harden-algo-downgrade", harden_algo_downgrade) 910 else O_YNO(opt, "use-caps-for-id", use_caps_bits_for_id) 911 else O_LST(opt, "caps-whitelist", caps_whitelist) 912 else O_DEC(opt, "unwanted-reply-threshold", unwanted_threshold) 913 else O_YNO(opt, "do-not-query-localhost", donotquery_localhost) 914 else O_STR(opt, "module-config", module_conf) 915 else O_STR(opt, "dlv-anchor-file", dlv_anchor_file) 916 else O_DEC(opt, "val-bogus-ttl", bogus_ttl) 917 else O_YNO(opt, "val-clean-additional", val_clean_additional) 918 else O_DEC(opt, "val-log-level", val_log_level) 919 else O_YNO(opt, "val-permissive-mode", val_permissive_mode) 920 else O_YNO(opt, "aggressive-nsec", aggressive_nsec) 921 else O_YNO(opt, "ignore-cd-flag", ignore_cd) 922 else O_YNO(opt, "serve-expired", serve_expired) 923 else O_STR(opt, "val-nsec3-keysize-iterations",val_nsec3_key_iterations) 924 else O_UNS(opt, "add-holddown", add_holddown) 925 else O_UNS(opt, "del-holddown", del_holddown) 926 else O_UNS(opt, "keep-missing", keep_missing) 927 else O_YNO(opt, "permit-small-holddown", permit_small_holddown) 928 else O_MEM(opt, "key-cache-size", key_cache_size) 929 else O_DEC(opt, "key-cache-slabs", key_cache_slabs) 930 else O_MEM(opt, "neg-cache-size", neg_cache_size) 931 else O_YNO(opt, "control-enable", remote_control_enable) 932 else O_DEC(opt, "control-port", control_port) 933 else O_STR(opt, "server-key-file", server_key_file) 934 else O_STR(opt, "server-cert-file", server_cert_file) 935 else O_STR(opt, "control-key-file", control_key_file) 936 else O_STR(opt, "control-cert-file", control_cert_file) 937 else O_LST(opt, "root-hints", root_hints) 938 else O_LS2(opt, "access-control", acls) 939 else O_LST(opt, "do-not-query-address", donotqueryaddrs) 940 else O_LST(opt, "private-address", private_address) 941 else O_LST(opt, "private-domain", private_domain) 942 else O_LST(opt, "auto-trust-anchor-file", auto_trust_anchor_file_list) 943 else O_LST(opt, "trust-anchor-file", trust_anchor_file_list) 944 else O_LST(opt, "trust-anchor", trust_anchor_list) 945 else O_LST(opt, "trusted-keys-file", trusted_keys_file_list) 946 else O_YNO(opt, "trust-anchor-signaling", trust_anchor_signaling) 947 else O_YNO(opt, "root-key-sentinel", root_key_sentinel) 948 else O_LST(opt, "dlv-anchor", dlv_anchor_list) 949 else O_LST(opt, "control-interface", control_ifs.first) 950 else O_LST(opt, "domain-insecure", domain_insecure) 951 else O_UNS(opt, "val-override-date", val_date_override) 952 else O_YNO(opt, "minimal-responses", minimal_responses) 953 else O_YNO(opt, "rrset-roundrobin", rrset_roundrobin) 954 #ifdef CLIENT_SUBNET 955 else O_LST(opt, "send-client-subnet", client_subnet) 956 else O_LST(opt, "client-subnet-zone", client_subnet_zone) 957 else O_DEC(opt, "max-client-subnet-ipv4", max_client_subnet_ipv4) 958 else O_DEC(opt, "max-client-subnet-ipv6", max_client_subnet_ipv6) 959 else O_YNO(opt, "client-subnet-always-forward:", 960 client_subnet_always_forward) 961 #endif 962 #ifdef USE_DNSTAP 963 else O_YNO(opt, "dnstap-enable", dnstap) 964 else O_STR(opt, "dnstap-socket-path", dnstap_socket_path) 965 else O_YNO(opt, "dnstap-send-identity", dnstap_send_identity) 966 else O_YNO(opt, "dnstap-send-version", dnstap_send_version) 967 else O_STR(opt, "dnstap-identity", dnstap_identity) 968 else O_STR(opt, "dnstap-version", dnstap_version) 969 else O_YNO(opt, "dnstap-log-resolver-query-messages", 970 dnstap_log_resolver_query_messages) 971 else O_YNO(opt, "dnstap-log-resolver-response-messages", 972 dnstap_log_resolver_response_messages) 973 else O_YNO(opt, "dnstap-log-client-query-messages", 974 dnstap_log_client_query_messages) 975 else O_YNO(opt, "dnstap-log-client-response-messages", 976 dnstap_log_client_response_messages) 977 else O_YNO(opt, "dnstap-log-forwarder-query-messages", 978 dnstap_log_forwarder_query_messages) 979 else O_YNO(opt, "dnstap-log-forwarder-response-messages", 980 dnstap_log_forwarder_response_messages) 981 #endif 982 #ifdef USE_DNSCRYPT 983 else O_YNO(opt, "dnscrypt-enable", dnscrypt) 984 else O_DEC(opt, "dnscrypt-port", dnscrypt_port) 985 else O_STR(opt, "dnscrypt-provider", dnscrypt_provider) 986 else O_LST(opt, "dnscrypt-provider-cert", dnscrypt_provider_cert) 987 else O_LST(opt, "dnscrypt-provider-cert-rotated", dnscrypt_provider_cert_rotated) 988 else O_LST(opt, "dnscrypt-secret-key", dnscrypt_secret_key) 989 else O_MEM(opt, "dnscrypt-shared-secret-cache-size", 990 dnscrypt_shared_secret_cache_size) 991 else O_DEC(opt, "dnscrypt-shared-secret-cache-slabs", 992 dnscrypt_shared_secret_cache_slabs) 993 else O_MEM(opt, "dnscrypt-nonce-cache-size", 994 dnscrypt_nonce_cache_size) 995 else O_DEC(opt, "dnscrypt-nonce-cache-slabs", 996 dnscrypt_nonce_cache_slabs) 997 #endif 998 else O_YNO(opt, "unblock-lan-zones", unblock_lan_zones) 999 else O_YNO(opt, "insecure-lan-zones", insecure_lan_zones) 1000 else O_DEC(opt, "max-udp-size", max_udp_size) 1001 else O_STR(opt, "python-script", python_script) 1002 else O_YNO(opt, "disable-dnssec-lame-check", disable_dnssec_lame_check) 1003 else O_DEC(opt, "ip-ratelimit", ip_ratelimit) 1004 else O_DEC(opt, "ratelimit", ratelimit) 1005 else O_MEM(opt, "ip-ratelimit-size", ip_ratelimit_size) 1006 else O_MEM(opt, "ratelimit-size", ratelimit_size) 1007 else O_DEC(opt, "ip-ratelimit-slabs", ip_ratelimit_slabs) 1008 else O_DEC(opt, "ratelimit-slabs", ratelimit_slabs) 1009 else O_LS2(opt, "ratelimit-for-domain", ratelimit_for_domain) 1010 else O_LS2(opt, "ratelimit-below-domain", ratelimit_below_domain) 1011 else O_DEC(opt, "ip-ratelimit-factor", ip_ratelimit_factor) 1012 else O_DEC(opt, "ratelimit-factor", ratelimit_factor) 1013 else O_DEC(opt, "low-rtt", low_rtt) 1014 else O_DEC(opt, "low-rtt-pct", low_rtt_permil) 1015 else O_DEC(opt, "low-rtt-permil", low_rtt_permil) 1016 else O_DEC(opt, "val-sig-skew-min", val_sig_skew_min) 1017 else O_DEC(opt, "val-sig-skew-max", val_sig_skew_max) 1018 else O_YNO(opt, "qname-minimisation", qname_minimisation) 1019 else O_YNO(opt, "qname-minimisation-strict", qname_minimisation_strict) 1020 else O_IFC(opt, "define-tag", num_tags, tagname) 1021 else O_LTG(opt, "local-zone-tag", local_zone_tags) 1022 else O_LTG(opt, "access-control-tag", acl_tags) 1023 else O_LTG(opt, "response-ip-tag", respip_tags) 1024 else O_LS3(opt, "local-zone-override", local_zone_overrides) 1025 else O_LS3(opt, "access-control-tag-action", acl_tag_actions) 1026 else O_LS3(opt, "access-control-tag-data", acl_tag_datas) 1027 else O_LS2(opt, "access-control-view", acl_view) 1028 #ifdef USE_IPSECMOD 1029 else O_YNO(opt, "ipsecmod-enabled", ipsecmod_enabled) 1030 else O_YNO(opt, "ipsecmod-ignore-bogus", ipsecmod_ignore_bogus) 1031 else O_STR(opt, "ipsecmod-hook", ipsecmod_hook) 1032 else O_DEC(opt, "ipsecmod-max-ttl", ipsecmod_max_ttl) 1033 else O_LST(opt, "ipsecmod-whitelist", ipsecmod_whitelist) 1034 else O_YNO(opt, "ipsecmod-strict", ipsecmod_strict) 1035 #endif 1036 #ifdef USE_CACHEDB 1037 else O_STR(opt, "backend", cachedb_backend) 1038 else O_STR(opt, "secret-seed", cachedb_secret) 1039 #endif 1040 /* not here: 1041 * outgoing-permit, outgoing-avoid - have list of ports 1042 * local-zone - zones and nodefault variables 1043 * local-data - see below 1044 * local-data-ptr - converted to local-data entries 1045 * stub-zone, name, stub-addr, stub-host, stub-prime 1046 * forward-zone, name, forward-addr, forward-host 1047 */ 1048 else return 0; 1049 return 1; 1050 } 1051 1052 /** initialize the global cfg_parser object */ 1053 static void 1054 create_cfg_parser(struct config_file* cfg, char* filename, const char* chroot) 1055 { 1056 static struct config_parser_state st; 1057 cfg_parser = &st; 1058 cfg_parser->filename = filename; 1059 cfg_parser->line = 1; 1060 cfg_parser->errors = 0; 1061 cfg_parser->cfg = cfg; 1062 cfg_parser->chroot = chroot; 1063 init_cfg_parse(); 1064 } 1065 1066 int 1067 config_read(struct config_file* cfg, const char* filename, const char* chroot) 1068 { 1069 FILE *in; 1070 char *fname = (char*)filename; 1071 #ifdef HAVE_GLOB 1072 glob_t g; 1073 size_t i; 1074 int r, flags; 1075 #endif 1076 if(!fname) 1077 return 1; 1078 1079 /* check for wildcards */ 1080 #ifdef HAVE_GLOB 1081 if(!(!strchr(fname, '*') && !strchr(fname, '?') && !strchr(fname, '[') && 1082 !strchr(fname, '{') && !strchr(fname, '~'))) { 1083 verbose(VERB_QUERY, "wildcard found, processing %s", fname); 1084 flags = 0 1085 #ifdef GLOB_ERR 1086 | GLOB_ERR 1087 #endif 1088 #ifdef GLOB_NOSORT 1089 | GLOB_NOSORT 1090 #endif 1091 #ifdef GLOB_BRACE 1092 | GLOB_BRACE 1093 #endif 1094 #ifdef GLOB_TILDE 1095 | GLOB_TILDE 1096 #endif 1097 ; 1098 memset(&g, 0, sizeof(g)); 1099 r = glob(fname, flags, NULL, &g); 1100 if(r) { 1101 /* some error */ 1102 globfree(&g); 1103 if(r == GLOB_NOMATCH) { 1104 verbose(VERB_QUERY, "include: " 1105 "no matches for %s", fname); 1106 return 1; 1107 } else if(r == GLOB_NOSPACE) { 1108 log_err("include: %s: " 1109 "fnametern out of memory", fname); 1110 } else if(r == GLOB_ABORTED) { 1111 log_err("wildcard include: %s: expansion " 1112 "aborted (%s)", fname, strerror(errno)); 1113 } else { 1114 log_err("wildcard include: %s: expansion " 1115 "failed (%s)", fname, strerror(errno)); 1116 } 1117 /* ignore globs that yield no files */ 1118 return 1; 1119 } 1120 /* process files found, if any */ 1121 for(i=0; i<(size_t)g.gl_pathc; i++) { 1122 if(!config_read(cfg, g.gl_pathv[i], chroot)) { 1123 log_err("error reading wildcard " 1124 "include: %s", g.gl_pathv[i]); 1125 globfree(&g); 1126 return 0; 1127 } 1128 } 1129 globfree(&g); 1130 return 1; 1131 } 1132 #endif /* HAVE_GLOB */ 1133 1134 in = fopen(fname, "r"); 1135 if(!in) { 1136 log_err("Could not open %s: %s", fname, strerror(errno)); 1137 return 0; 1138 } 1139 create_cfg_parser(cfg, fname, chroot); 1140 ub_c_in = in; 1141 ub_c_parse(); 1142 fclose(in); 1143 1144 if(!cfg->dnscrypt) cfg->dnscrypt_port = 0; 1145 1146 if(cfg_parser->errors != 0) { 1147 fprintf(stderr, "read %s failed: %d errors in configuration file\n", 1148 fname, cfg_parser->errors); 1149 errno=EINVAL; 1150 return 0; 1151 } 1152 1153 return 1; 1154 } 1155 1156 struct config_stub* cfg_stub_find(struct config_stub*** pp, const char* nm) 1157 { 1158 struct config_stub* p = *(*pp); 1159 while(p) { 1160 if(strcmp(p->name, nm) == 0) 1161 return p; 1162 (*pp) = &p->next; 1163 p = p->next; 1164 } 1165 return NULL; 1166 } 1167 1168 void 1169 config_delstrlist(struct config_strlist* p) 1170 { 1171 struct config_strlist *np; 1172 while(p) { 1173 np = p->next; 1174 free(p->str); 1175 free(p); 1176 p = np; 1177 } 1178 } 1179 1180 void 1181 config_deldblstrlist(struct config_str2list* p) 1182 { 1183 struct config_str2list *np; 1184 while(p) { 1185 np = p->next; 1186 free(p->str); 1187 free(p->str2); 1188 free(p); 1189 p = np; 1190 } 1191 } 1192 1193 void 1194 config_deltrplstrlist(struct config_str3list* p) 1195 { 1196 struct config_str3list *np; 1197 while(p) { 1198 np = p->next; 1199 free(p->str); 1200 free(p->str2); 1201 free(p->str3); 1202 free(p); 1203 p = np; 1204 } 1205 } 1206 1207 void 1208 config_delauth(struct config_auth* p) 1209 { 1210 if(!p) return; 1211 free(p->name); 1212 config_delstrlist(p->masters); 1213 config_delstrlist(p->urls); 1214 config_delstrlist(p->allow_notify); 1215 free(p->zonefile); 1216 free(p); 1217 } 1218 1219 void 1220 config_delauths(struct config_auth* p) 1221 { 1222 struct config_auth* np; 1223 while(p) { 1224 np = p->next; 1225 config_delauth(p); 1226 p = np; 1227 } 1228 } 1229 1230 void 1231 config_delstub(struct config_stub* p) 1232 { 1233 if(!p) return; 1234 free(p->name); 1235 config_delstrlist(p->hosts); 1236 config_delstrlist(p->addrs); 1237 free(p); 1238 } 1239 1240 void 1241 config_delstubs(struct config_stub* p) 1242 { 1243 struct config_stub* np; 1244 while(p) { 1245 np = p->next; 1246 config_delstub(p); 1247 p = np; 1248 } 1249 } 1250 1251 void 1252 config_delview(struct config_view* p) 1253 { 1254 if(!p) return; 1255 free(p->name); 1256 config_deldblstrlist(p->local_zones); 1257 config_delstrlist(p->local_zones_nodefault); 1258 config_delstrlist(p->local_data); 1259 free(p); 1260 } 1261 1262 void 1263 config_delviews(struct config_view* p) 1264 { 1265 struct config_view* np; 1266 while(p) { 1267 np = p->next; 1268 config_delview(p); 1269 p = np; 1270 } 1271 } 1272 /** delete string array */ 1273 static void 1274 config_del_strarray(char** array, int num) 1275 { 1276 int i; 1277 if(!array) 1278 return; 1279 for(i=0; i<num; i++) { 1280 free(array[i]); 1281 } 1282 free(array); 1283 } 1284 1285 void 1286 config_del_strbytelist(struct config_strbytelist* p) 1287 { 1288 struct config_strbytelist* np; 1289 while(p) { 1290 np = p->next; 1291 free(p->str); 1292 free(p->str2); 1293 free(p); 1294 p = np; 1295 } 1296 } 1297 1298 void 1299 config_delete(struct config_file* cfg) 1300 { 1301 if(!cfg) return; 1302 free(cfg->username); 1303 free(cfg->chrootdir); 1304 free(cfg->directory); 1305 free(cfg->logfile); 1306 free(cfg->pidfile); 1307 free(cfg->target_fetch_policy); 1308 free(cfg->ssl_service_key); 1309 free(cfg->ssl_service_pem); 1310 free(cfg->tls_cert_bundle); 1311 config_delstrlist(cfg->tls_additional_port); 1312 free(cfg->log_identity); 1313 config_del_strarray(cfg->ifs, cfg->num_ifs); 1314 config_del_strarray(cfg->out_ifs, cfg->num_out_ifs); 1315 config_delstubs(cfg->stubs); 1316 config_delstubs(cfg->forwards); 1317 config_delauths(cfg->auths); 1318 config_delviews(cfg->views); 1319 config_delstrlist(cfg->donotqueryaddrs); 1320 config_delstrlist(cfg->root_hints); 1321 #ifdef CLIENT_SUBNET 1322 config_delstrlist(cfg->client_subnet); 1323 config_delstrlist(cfg->client_subnet_zone); 1324 #endif 1325 free(cfg->identity); 1326 free(cfg->version); 1327 free(cfg->module_conf); 1328 free(cfg->outgoing_avail_ports); 1329 free(cfg->python_script); 1330 config_delstrlist(cfg->caps_whitelist); 1331 config_delstrlist(cfg->private_address); 1332 config_delstrlist(cfg->private_domain); 1333 config_delstrlist(cfg->auto_trust_anchor_file_list); 1334 config_delstrlist(cfg->trust_anchor_file_list); 1335 config_delstrlist(cfg->trusted_keys_file_list); 1336 config_delstrlist(cfg->trust_anchor_list); 1337 config_delstrlist(cfg->domain_insecure); 1338 free(cfg->dlv_anchor_file); 1339 config_delstrlist(cfg->dlv_anchor_list); 1340 config_deldblstrlist(cfg->acls); 1341 free(cfg->val_nsec3_key_iterations); 1342 config_deldblstrlist(cfg->local_zones); 1343 config_delstrlist(cfg->local_zones_nodefault); 1344 config_delstrlist(cfg->local_data); 1345 config_deltrplstrlist(cfg->local_zone_overrides); 1346 config_del_strarray(cfg->tagname, cfg->num_tags); 1347 config_del_strbytelist(cfg->local_zone_tags); 1348 config_del_strbytelist(cfg->acl_tags); 1349 config_del_strbytelist(cfg->respip_tags); 1350 config_deltrplstrlist(cfg->acl_tag_actions); 1351 config_deltrplstrlist(cfg->acl_tag_datas); 1352 config_delstrlist(cfg->control_ifs.first); 1353 free(cfg->server_key_file); 1354 free(cfg->server_cert_file); 1355 free(cfg->control_key_file); 1356 free(cfg->control_cert_file); 1357 free(cfg->dns64_prefix); 1358 free(cfg->dnstap_socket_path); 1359 free(cfg->dnstap_identity); 1360 free(cfg->dnstap_version); 1361 config_deldblstrlist(cfg->ratelimit_for_domain); 1362 config_deldblstrlist(cfg->ratelimit_below_domain); 1363 #ifdef USE_IPSECMOD 1364 free(cfg->ipsecmod_hook); 1365 config_delstrlist(cfg->ipsecmod_whitelist); 1366 #endif 1367 #ifdef USE_CACHEDB 1368 free(cfg->cachedb_backend); 1369 free(cfg->cachedb_secret); 1370 #endif 1371 free(cfg); 1372 } 1373 1374 static void 1375 init_outgoing_availports(int* a, int num) 1376 { 1377 /* generated with make iana_update */ 1378 const int iana_assigned[] = { 1379 #include "util/iana_ports.inc" 1380 -1 }; /* end marker to put behind trailing comma */ 1381 1382 int i; 1383 /* do not use <1024, that could be trouble with the system, privs */ 1384 for(i=1024; i<num; i++) { 1385 a[i] = i; 1386 } 1387 /* create empty spot at 49152 to keep ephemeral ports available 1388 * to other programs */ 1389 for(i=49152; i<49152+256; i++) 1390 a[i] = 0; 1391 /* pick out all the IANA assigned ports */ 1392 for(i=0; iana_assigned[i]!=-1; i++) { 1393 if(iana_assigned[i] < num) 1394 a[iana_assigned[i]] = 0; 1395 } 1396 } 1397 1398 int 1399 cfg_mark_ports(const char* str, int allow, int* avail, int num) 1400 { 1401 char* mid = strchr(str, '-'); 1402 if(!mid) { 1403 int port = atoi(str); 1404 if(port == 0 && strcmp(str, "0") != 0) { 1405 log_err("cannot parse port number '%s'", str); 1406 return 0; 1407 } 1408 if(port < num) 1409 avail[port] = (allow?port:0); 1410 } else { 1411 int i, low, high = atoi(mid+1); 1412 char buf[16]; 1413 if(high == 0 && strcmp(mid+1, "0") != 0) { 1414 log_err("cannot parse port number '%s'", mid+1); 1415 return 0; 1416 } 1417 if( (int)(mid-str)+1 >= (int)sizeof(buf) ) { 1418 log_err("cannot parse port number '%s'", str); 1419 return 0; 1420 } 1421 if(mid > str) 1422 memcpy(buf, str, (size_t)(mid-str)); 1423 buf[mid-str] = 0; 1424 low = atoi(buf); 1425 if(low == 0 && strcmp(buf, "0") != 0) { 1426 log_err("cannot parse port number '%s'", buf); 1427 return 0; 1428 } 1429 for(i=low; i<=high; i++) { 1430 if(i < num) 1431 avail[i] = (allow?i:0); 1432 } 1433 return 1; 1434 } 1435 return 1; 1436 } 1437 1438 int 1439 cfg_scan_ports(int* avail, int num) 1440 { 1441 int i; 1442 int count = 0; 1443 for(i=0; i<num; i++) { 1444 if(avail[i]) 1445 count++; 1446 } 1447 return count; 1448 } 1449 1450 int cfg_condense_ports(struct config_file* cfg, int** avail) 1451 { 1452 int num = cfg_scan_ports(cfg->outgoing_avail_ports, 65536); 1453 int i, at = 0; 1454 *avail = NULL; 1455 if(num == 0) 1456 return 0; 1457 *avail = (int*)reallocarray(NULL, (size_t)num, sizeof(int)); 1458 if(!*avail) 1459 return 0; 1460 for(i=0; i<65536; i++) { 1461 if(cfg->outgoing_avail_ports[i]) 1462 (*avail)[at++] = cfg->outgoing_avail_ports[i]; 1463 } 1464 log_assert(at == num); 1465 return num; 1466 } 1467 1468 /** print error with file and line number */ 1469 static void ub_c_error_va_list(const char *fmt, va_list args) 1470 { 1471 cfg_parser->errors++; 1472 fprintf(stderr, "%s:%d: error: ", cfg_parser->filename, 1473 cfg_parser->line); 1474 vfprintf(stderr, fmt, args); 1475 fprintf(stderr, "\n"); 1476 } 1477 1478 /** print error with file and line number */ 1479 void ub_c_error_msg(const char* fmt, ...) 1480 { 1481 va_list args; 1482 va_start(args, fmt); 1483 ub_c_error_va_list(fmt, args); 1484 va_end(args); 1485 } 1486 1487 void ub_c_error(const char *str) 1488 { 1489 cfg_parser->errors++; 1490 fprintf(stderr, "%s:%d: error: %s\n", cfg_parser->filename, 1491 cfg_parser->line, str); 1492 } 1493 1494 int ub_c_wrap(void) 1495 { 1496 return 1; 1497 } 1498 1499 int cfg_strlist_append(struct config_strlist_head* list, char* item) 1500 { 1501 struct config_strlist *s; 1502 if(!item || !list) 1503 return 0; 1504 s = (struct config_strlist*)calloc(1, sizeof(struct config_strlist)); 1505 if(!s) 1506 return 0; 1507 s->str = item; 1508 s->next = NULL; 1509 if(list->last) 1510 list->last->next = s; 1511 else 1512 list->first = s; 1513 list->last = s; 1514 return 1; 1515 } 1516 1517 int 1518 cfg_region_strlist_insert(struct regional* region, 1519 struct config_strlist** head, char* item) 1520 { 1521 struct config_strlist *s; 1522 if(!item || !head) 1523 return 0; 1524 s = (struct config_strlist*)regional_alloc_zero(region, 1525 sizeof(struct config_strlist)); 1526 if(!s) 1527 return 0; 1528 s->str = item; 1529 s->next = *head; 1530 *head = s; 1531 return 1; 1532 } 1533 1534 struct config_strlist* 1535 cfg_strlist_find(struct config_strlist* head, const char *item) 1536 { 1537 struct config_strlist *s = head; 1538 if(!head){ 1539 return NULL; 1540 } 1541 while(s) { 1542 if(strcmp(s->str, item) == 0) { 1543 return s; 1544 } 1545 s = s->next; 1546 } 1547 return NULL; 1548 } 1549 1550 int 1551 cfg_strlist_insert(struct config_strlist** head, char* item) 1552 { 1553 struct config_strlist *s; 1554 if(!item || !head) 1555 return 0; 1556 s = (struct config_strlist*)calloc(1, sizeof(struct config_strlist)); 1557 if(!s) 1558 return 0; 1559 s->str = item; 1560 s->next = *head; 1561 *head = s; 1562 return 1; 1563 } 1564 1565 int 1566 cfg_str2list_insert(struct config_str2list** head, char* item, char* i2) 1567 { 1568 struct config_str2list *s; 1569 if(!item || !i2 || !head) 1570 return 0; 1571 s = (struct config_str2list*)calloc(1, sizeof(struct config_str2list)); 1572 if(!s) 1573 return 0; 1574 s->str = item; 1575 s->str2 = i2; 1576 s->next = *head; 1577 *head = s; 1578 return 1; 1579 } 1580 1581 int 1582 cfg_str3list_insert(struct config_str3list** head, char* item, char* i2, 1583 char* i3) 1584 { 1585 struct config_str3list *s; 1586 if(!item || !i2 || !i3 || !head) 1587 return 0; 1588 s = (struct config_str3list*)calloc(1, sizeof(struct config_str3list)); 1589 if(!s) 1590 return 0; 1591 s->str = item; 1592 s->str2 = i2; 1593 s->str3 = i3; 1594 s->next = *head; 1595 *head = s; 1596 return 1; 1597 } 1598 1599 int 1600 cfg_strbytelist_insert(struct config_strbytelist** head, char* item, 1601 uint8_t* i2, size_t i2len) 1602 { 1603 struct config_strbytelist* s; 1604 if(!item || !i2 || !head) 1605 return 0; 1606 s = (struct config_strbytelist*)calloc(1, sizeof(*s)); 1607 if(!s) 1608 return 0; 1609 s->str = item; 1610 s->str2 = i2; 1611 s->str2len = i2len; 1612 s->next = *head; 1613 *head = s; 1614 return 1; 1615 } 1616 1617 time_t 1618 cfg_convert_timeval(const char* str) 1619 { 1620 time_t t; 1621 struct tm tm; 1622 memset(&tm, 0, sizeof(tm)); 1623 if(strlen(str) < 14) 1624 return 0; 1625 if(sscanf(str, "%4d%2d%2d%2d%2d%2d", &tm.tm_year, &tm.tm_mon, 1626 &tm.tm_mday, &tm.tm_hour, &tm.tm_min, &tm.tm_sec) != 6) 1627 return 0; 1628 tm.tm_year -= 1900; 1629 tm.tm_mon--; 1630 /* Check values */ 1631 if (tm.tm_year < 70) return 0; 1632 if (tm.tm_mon < 0 || tm.tm_mon > 11) return 0; 1633 if (tm.tm_mday < 1 || tm.tm_mday > 31) return 0; 1634 if (tm.tm_hour < 0 || tm.tm_hour > 23) return 0; 1635 if (tm.tm_min < 0 || tm.tm_min > 59) return 0; 1636 if (tm.tm_sec < 0 || tm.tm_sec > 59) return 0; 1637 /* call ldns conversion function */ 1638 t = sldns_mktime_from_utc(&tm); 1639 return t; 1640 } 1641 1642 int 1643 cfg_count_numbers(const char* s) 1644 { 1645 /* format ::= (sp num)+ sp */ 1646 /* num ::= [-](0-9)+ */ 1647 /* sp ::= (space|tab)* */ 1648 int num = 0; 1649 while(*s) { 1650 while(*s && isspace((unsigned char)*s)) 1651 s++; 1652 if(!*s) /* end of string */ 1653 break; 1654 if(*s == '-') 1655 s++; 1656 if(!*s) /* only - not allowed */ 1657 return 0; 1658 if(!isdigit((unsigned char)*s)) /* bad character */ 1659 return 0; 1660 while(*s && isdigit((unsigned char)*s)) 1661 s++; 1662 num++; 1663 } 1664 return num; 1665 } 1666 1667 /** all digit number */ 1668 static int isalldigit(const char* str, size_t l) 1669 { 1670 size_t i; 1671 for(i=0; i<l; i++) 1672 if(!isdigit((unsigned char)str[i])) 1673 return 0; 1674 return 1; 1675 } 1676 1677 int 1678 cfg_parse_memsize(const char* str, size_t* res) 1679 { 1680 size_t len; 1681 size_t mult = 1; 1682 if(!str || (len=(size_t)strlen(str)) == 0) { 1683 log_err("not a size: '%s'", str); 1684 return 0; 1685 } 1686 if(isalldigit(str, len)) { 1687 *res = (size_t)atol(str); 1688 return 1; 1689 } 1690 /* check appended num */ 1691 while(len>0 && str[len-1]==' ') 1692 len--; 1693 if(len > 1 && str[len-1] == 'b') 1694 len--; 1695 else if(len > 1 && str[len-1] == 'B') 1696 len--; 1697 1698 if(len > 1 && tolower((unsigned char)str[len-1]) == 'g') 1699 mult = 1024*1024*1024; 1700 else if(len > 1 && tolower((unsigned char)str[len-1]) == 'm') 1701 mult = 1024*1024; 1702 else if(len > 1 && tolower((unsigned char)str[len-1]) == 'k') 1703 mult = 1024; 1704 else if(len > 0 && isdigit((unsigned char)str[len-1])) 1705 mult = 1; 1706 else { 1707 log_err("unknown size specifier: '%s'", str); 1708 return 0; 1709 } 1710 while(len>1 && str[len-2]==' ') 1711 len--; 1712 1713 if(!isalldigit(str, len-1)) { 1714 log_err("unknown size specifier: '%s'", str); 1715 return 0; 1716 } 1717 *res = ((size_t)atol(str)) * mult; 1718 return 1; 1719 } 1720 1721 int 1722 find_tag_id(struct config_file* cfg, const char* tag) 1723 { 1724 int i; 1725 for(i=0; i<cfg->num_tags; i++) { 1726 if(strcmp(cfg->tagname[i], tag) == 0) 1727 return i; 1728 } 1729 return -1; 1730 } 1731 1732 int 1733 config_add_tag(struct config_file* cfg, const char* tag) 1734 { 1735 char** newarray; 1736 char* newtag; 1737 if(find_tag_id(cfg, tag) != -1) 1738 return 1; /* nothing to do */ 1739 newarray = (char**)malloc(sizeof(char*)*(cfg->num_tags+1)); 1740 if(!newarray) 1741 return 0; 1742 newtag = strdup(tag); 1743 if(!newtag) { 1744 free(newarray); 1745 return 0; 1746 } 1747 if(cfg->tagname) { 1748 memcpy(newarray, cfg->tagname, sizeof(char*)*cfg->num_tags); 1749 free(cfg->tagname); 1750 } 1751 newarray[cfg->num_tags++] = newtag; 1752 cfg->tagname = newarray; 1753 return 1; 1754 } 1755 1756 /** set a bit in a bit array */ 1757 static void 1758 cfg_set_bit(uint8_t* bitlist, size_t len, int id) 1759 { 1760 int pos = id/8; 1761 log_assert((size_t)pos < len); 1762 (void)len; 1763 bitlist[pos] |= 1<<(id%8); 1764 } 1765 1766 uint8_t* config_parse_taglist(struct config_file* cfg, char* str, 1767 size_t* listlen) 1768 { 1769 uint8_t* taglist = NULL; 1770 size_t len = 0; 1771 char* p, *s; 1772 1773 /* allocate */ 1774 if(cfg->num_tags == 0) { 1775 log_err("parse taglist, but no tags defined"); 1776 return 0; 1777 } 1778 len = (size_t)(cfg->num_tags+7)/8; 1779 taglist = calloc(1, len); 1780 if(!taglist) { 1781 log_err("out of memory"); 1782 return 0; 1783 } 1784 1785 /* parse */ 1786 s = str; 1787 while((p=strsep(&s, " \t\n")) != NULL) { 1788 if(*p) { 1789 int id = find_tag_id(cfg, p); 1790 /* set this bit in the bitlist */ 1791 if(id == -1) { 1792 log_err("unknown tag: %s", p); 1793 free(taglist); 1794 return 0; 1795 } 1796 cfg_set_bit(taglist, len, id); 1797 } 1798 } 1799 1800 *listlen = len; 1801 return taglist; 1802 } 1803 1804 char* config_taglist2str(struct config_file* cfg, uint8_t* taglist, 1805 size_t taglen) 1806 { 1807 char buf[10240]; 1808 size_t i, j, len = 0; 1809 buf[0] = 0; 1810 for(i=0; i<taglen; i++) { 1811 if(taglist[i] == 0) 1812 continue; 1813 for(j=0; j<8; j++) { 1814 if((taglist[i] & (1<<j)) != 0) { 1815 size_t id = i*8 + j; 1816 snprintf(buf+len, sizeof(buf)-len, "%s%s", 1817 (len==0?"":" "), cfg->tagname[id]); 1818 len += strlen(buf+len); 1819 } 1820 } 1821 } 1822 return strdup(buf); 1823 } 1824 1825 int taglist_intersect(uint8_t* list1, size_t list1len, uint8_t* list2, 1826 size_t list2len) 1827 { 1828 size_t i; 1829 if(!list1 || !list2) 1830 return 0; 1831 for(i=0; i<list1len && i<list2len; i++) { 1832 if((list1[i] & list2[i]) != 0) 1833 return 1; 1834 } 1835 return 0; 1836 } 1837 1838 void 1839 config_apply(struct config_file* config) 1840 { 1841 MAX_TTL = (time_t)config->max_ttl; 1842 MIN_TTL = (time_t)config->min_ttl; 1843 MAX_NEG_TTL = (time_t)config->max_negative_ttl; 1844 RTT_MIN_TIMEOUT = config->infra_cache_min_rtt; 1845 EDNS_ADVERTISED_SIZE = (uint16_t)config->edns_buffer_size; 1846 MINIMAL_RESPONSES = config->minimal_responses; 1847 RRSET_ROUNDROBIN = config->rrset_roundrobin; 1848 log_set_time_asc(config->log_time_ascii); 1849 autr_permit_small_holddown = config->permit_small_holddown; 1850 } 1851 1852 void config_lookup_uid(struct config_file* cfg) 1853 { 1854 #ifdef HAVE_GETPWNAM 1855 /* translate username into uid and gid */ 1856 if(cfg->username && cfg->username[0]) { 1857 struct passwd *pwd; 1858 if((pwd = getpwnam(cfg->username)) != NULL) { 1859 cfg_uid = pwd->pw_uid; 1860 cfg_gid = pwd->pw_gid; 1861 } 1862 } 1863 #else 1864 (void)cfg; 1865 #endif 1866 } 1867 1868 /** 1869 * Calculate string length of full pathname in original filesys 1870 * @param fname: the path name to convert. 1871 * Must not be null or empty. 1872 * @param cfg: config struct for chroot and chdir (if set). 1873 * @param use_chdir: if false, only chroot is applied. 1874 * @return length of string. 1875 * remember to allocate one more for 0 at end in mallocs. 1876 */ 1877 static size_t 1878 strlen_after_chroot(const char* fname, struct config_file* cfg, int use_chdir) 1879 { 1880 size_t len = 0; 1881 int slashit = 0; 1882 if(cfg->chrootdir && cfg->chrootdir[0] && 1883 strncmp(cfg->chrootdir, fname, strlen(cfg->chrootdir)) == 0) { 1884 /* already full pathname, return it */ 1885 return strlen(fname); 1886 } 1887 /* chroot */ 1888 if(cfg->chrootdir && cfg->chrootdir[0]) { 1889 /* start with chrootdir */ 1890 len += strlen(cfg->chrootdir); 1891 slashit = 1; 1892 } 1893 /* chdir */ 1894 #ifdef UB_ON_WINDOWS 1895 if(fname[0] != 0 && fname[1] == ':') { 1896 /* full path, no chdir */ 1897 } else 1898 #endif 1899 if(fname[0] == '/' || !use_chdir) { 1900 /* full path, no chdir */ 1901 } else if(cfg->directory && cfg->directory[0]) { 1902 /* prepend chdir */ 1903 if(slashit && cfg->directory[0] != '/') 1904 len++; 1905 if(cfg->chrootdir && cfg->chrootdir[0] && 1906 strncmp(cfg->chrootdir, cfg->directory, 1907 strlen(cfg->chrootdir)) == 0) 1908 len += strlen(cfg->directory)-strlen(cfg->chrootdir); 1909 else len += strlen(cfg->directory); 1910 slashit = 1; 1911 } 1912 /* fname */ 1913 if(slashit && fname[0] != '/') 1914 len++; 1915 len += strlen(fname); 1916 return len; 1917 } 1918 1919 char* 1920 fname_after_chroot(const char* fname, struct config_file* cfg, int use_chdir) 1921 { 1922 size_t len = strlen_after_chroot(fname, cfg, use_chdir)+1; 1923 int slashit = 0; 1924 char* buf = (char*)malloc(len); 1925 if(!buf) 1926 return NULL; 1927 buf[0] = 0; 1928 /* is fname already in chroot ? */ 1929 if(cfg->chrootdir && cfg->chrootdir[0] && 1930 strncmp(cfg->chrootdir, fname, strlen(cfg->chrootdir)) == 0) { 1931 /* already full pathname, return it */ 1932 (void)strlcpy(buf, fname, len); 1933 buf[len-1] = 0; 1934 return buf; 1935 } 1936 /* chroot */ 1937 if(cfg->chrootdir && cfg->chrootdir[0]) { 1938 /* start with chrootdir */ 1939 (void)strlcpy(buf, cfg->chrootdir, len); 1940 slashit = 1; 1941 } 1942 #ifdef UB_ON_WINDOWS 1943 if(fname[0] != 0 && fname[1] == ':') { 1944 /* full path, no chdir */ 1945 } else 1946 #endif 1947 /* chdir */ 1948 if(fname[0] == '/' || !use_chdir) { 1949 /* full path, no chdir */ 1950 } else if(cfg->directory && cfg->directory[0]) { 1951 /* prepend chdir */ 1952 if(slashit && cfg->directory[0] != '/') 1953 (void)strlcat(buf, "/", len); 1954 /* is the directory already in the chroot? */ 1955 if(cfg->chrootdir && cfg->chrootdir[0] && 1956 strncmp(cfg->chrootdir, cfg->directory, 1957 strlen(cfg->chrootdir)) == 0) 1958 (void)strlcat(buf, cfg->directory+strlen(cfg->chrootdir), 1959 len); 1960 else (void)strlcat(buf, cfg->directory, len); 1961 slashit = 1; 1962 } 1963 /* fname */ 1964 if(slashit && fname[0] != '/') 1965 (void)strlcat(buf, "/", len); 1966 (void)strlcat(buf, fname, len); 1967 buf[len-1] = 0; 1968 return buf; 1969 } 1970 1971 /** return next space character in string */ 1972 static char* next_space_pos(const char* str) 1973 { 1974 char* sp = strchr(str, ' '); 1975 char* tab = strchr(str, '\t'); 1976 if(!tab && !sp) 1977 return NULL; 1978 if(!sp) return tab; 1979 if(!tab) return sp; 1980 return (sp<tab)?sp:tab; 1981 } 1982 1983 /** return last space character in string */ 1984 static char* last_space_pos(const char* str) 1985 { 1986 char* sp = strrchr(str, ' '); 1987 char* tab = strrchr(str, '\t'); 1988 if(!tab && !sp) 1989 return NULL; 1990 if(!sp) return tab; 1991 if(!tab) return sp; 1992 return (sp>tab)?sp:tab; 1993 } 1994 1995 int 1996 cfg_parse_local_zone(struct config_file* cfg, const char* val) 1997 { 1998 const char *type, *name_end, *name; 1999 char buf[256]; 2000 2001 /* parse it as: [zone_name] [between stuff] [zone_type] */ 2002 name = val; 2003 while(*name && isspace((unsigned char)*name)) 2004 name++; 2005 if(!*name) { 2006 log_err("syntax error: too short: %s", val); 2007 return 0; 2008 } 2009 name_end = next_space_pos(name); 2010 if(!name_end || !*name_end) { 2011 log_err("syntax error: expected zone type: %s", val); 2012 return 0; 2013 } 2014 if (name_end - name > 255) { 2015 log_err("syntax error: bad zone name: %s", val); 2016 return 0; 2017 } 2018 (void)strlcpy(buf, name, sizeof(buf)); 2019 buf[name_end-name] = '\0'; 2020 2021 type = last_space_pos(name_end); 2022 while(type && *type && isspace((unsigned char)*type)) 2023 type++; 2024 if(!type || !*type) { 2025 log_err("syntax error: expected zone type: %s", val); 2026 return 0; 2027 } 2028 2029 if(strcmp(type, "nodefault")==0) { 2030 return cfg_strlist_insert(&cfg->local_zones_nodefault, 2031 strdup(name)); 2032 } else { 2033 return cfg_str2list_insert(&cfg->local_zones, strdup(buf), 2034 strdup(type)); 2035 } 2036 } 2037 2038 char* cfg_ptr_reverse(char* str) 2039 { 2040 char* ip, *ip_end; 2041 char* name; 2042 char* result; 2043 char buf[1024]; 2044 struct sockaddr_storage addr; 2045 socklen_t addrlen; 2046 2047 /* parse it as: [IP] [between stuff] [name] */ 2048 ip = str; 2049 while(*ip && isspace((unsigned char)*ip)) 2050 ip++; 2051 if(!*ip) { 2052 log_err("syntax error: too short: %s", str); 2053 return NULL; 2054 } 2055 ip_end = next_space_pos(ip); 2056 if(!ip_end || !*ip_end) { 2057 log_err("syntax error: expected name: %s", str); 2058 return NULL; 2059 } 2060 2061 name = last_space_pos(ip_end); 2062 if(!name || !*name) { 2063 log_err("syntax error: expected name: %s", str); 2064 return NULL; 2065 } 2066 2067 sscanf(ip, "%100s", buf); 2068 buf[sizeof(buf)-1]=0; 2069 2070 if(!ipstrtoaddr(buf, UNBOUND_DNS_PORT, &addr, &addrlen)) { 2071 log_err("syntax error: cannot parse address: %s", str); 2072 return NULL; 2073 } 2074 2075 /* reverse IPv4: 2076 * ddd.ddd.ddd.ddd.in-addr-arpa. 2077 * IPv6: (h.){32}.ip6.arpa. */ 2078 2079 if(addr_is_ip6(&addr, addrlen)) { 2080 uint8_t ad[16]; 2081 const char* hex = "0123456789abcdef"; 2082 char *p = buf; 2083 int i; 2084 memmove(ad, &((struct sockaddr_in6*)&addr)->sin6_addr, 2085 sizeof(ad)); 2086 for(i=15; i>=0; i--) { 2087 uint8_t b = ad[i]; 2088 *p++ = hex[ (b&0x0f) ]; 2089 *p++ = '.'; 2090 *p++ = hex[ (b&0xf0) >> 4 ]; 2091 *p++ = '.'; 2092 } 2093 snprintf(buf+16*4, sizeof(buf)-16*4, "ip6.arpa. "); 2094 } else { 2095 uint8_t ad[4]; 2096 memmove(ad, &((struct sockaddr_in*)&addr)->sin_addr, 2097 sizeof(ad)); 2098 snprintf(buf, sizeof(buf), "%u.%u.%u.%u.in-addr.arpa. ", 2099 (unsigned)ad[3], (unsigned)ad[2], 2100 (unsigned)ad[1], (unsigned)ad[0]); 2101 } 2102 2103 /* printed the reverse address, now the between goop and name on end */ 2104 while(*ip_end && isspace((unsigned char)*ip_end)) 2105 ip_end++; 2106 if(name>ip_end) { 2107 snprintf(buf+strlen(buf), sizeof(buf)-strlen(buf), "%.*s", 2108 (int)(name-ip_end), ip_end); 2109 } 2110 snprintf(buf+strlen(buf), sizeof(buf)-strlen(buf), " PTR %s", name); 2111 2112 result = strdup(buf); 2113 if(!result) { 2114 log_err("out of memory parsing %s", str); 2115 return NULL; 2116 } 2117 return result; 2118 } 2119 2120 #ifdef UB_ON_WINDOWS 2121 char* 2122 w_lookup_reg_str(const char* key, const char* name) 2123 { 2124 HKEY hk = NULL; 2125 DWORD type = 0; 2126 BYTE buf[1024]; 2127 DWORD len = (DWORD)sizeof(buf); 2128 LONG ret; 2129 char* result = NULL; 2130 ret = RegOpenKeyEx(HKEY_LOCAL_MACHINE, key, 0, KEY_READ, &hk); 2131 if(ret == ERROR_FILE_NOT_FOUND) 2132 return NULL; /* key does not exist */ 2133 else if(ret != ERROR_SUCCESS) { 2134 log_err("RegOpenKeyEx failed"); 2135 return NULL; 2136 } 2137 ret = RegQueryValueEx(hk, (LPCTSTR)name, 0, &type, buf, &len); 2138 if(RegCloseKey(hk)) 2139 log_err("RegCloseKey"); 2140 if(ret == ERROR_FILE_NOT_FOUND) 2141 return NULL; /* name does not exist */ 2142 else if(ret != ERROR_SUCCESS) { 2143 log_err("RegQueryValueEx failed"); 2144 return NULL; 2145 } 2146 if(type == REG_SZ || type == REG_MULTI_SZ || type == REG_EXPAND_SZ) { 2147 buf[sizeof(buf)-1] = 0; 2148 buf[sizeof(buf)-2] = 0; /* for multi_sz */ 2149 result = strdup((char*)buf); 2150 if(!result) log_err("out of memory"); 2151 } 2152 return result; 2153 } 2154 2155 void w_config_adjust_directory(struct config_file* cfg) 2156 { 2157 if(cfg->directory && cfg->directory[0]) { 2158 TCHAR dirbuf[2*MAX_PATH+4]; 2159 if(strcmp(cfg->directory, "%EXECUTABLE%") == 0) { 2160 /* get executable path, and if that contains 2161 * directories, snip off the filename part */ 2162 dirbuf[0] = 0; 2163 if(!GetModuleFileName(NULL, dirbuf, MAX_PATH)) 2164 log_err("could not GetModuleFileName"); 2165 if(strrchr(dirbuf, '\\')) { 2166 (strrchr(dirbuf, '\\'))[0] = 0; 2167 } else log_err("GetModuleFileName had no path"); 2168 if(dirbuf[0]) { 2169 /* adjust directory for later lookups to work*/ 2170 free(cfg->directory); 2171 cfg->directory = memdup(dirbuf, strlen(dirbuf)+1); 2172 } 2173 } 2174 } 2175 } 2176 #endif /* UB_ON_WINDOWS */ 2177 2178 void errinf(struct module_qstate* qstate, const char* str) 2179 { 2180 struct config_strlist* p; 2181 if(qstate->env->cfg->val_log_level < 2 || !str) 2182 return; 2183 p = (struct config_strlist*)regional_alloc(qstate->region, sizeof(*p)); 2184 if(!p) { 2185 log_err("malloc failure in validator-error-info string"); 2186 return; 2187 } 2188 p->next = NULL; 2189 p->str = regional_strdup(qstate->region, str); 2190 if(!p->str) { 2191 log_err("malloc failure in validator-error-info string"); 2192 return; 2193 } 2194 /* add at end */ 2195 if(qstate->errinf) { 2196 struct config_strlist* q = qstate->errinf; 2197 while(q->next) 2198 q = q->next; 2199 q->next = p; 2200 } else qstate->errinf = p; 2201 } 2202 2203 void errinf_origin(struct module_qstate* qstate, struct sock_list *origin) 2204 { 2205 struct sock_list* p; 2206 if(qstate->env->cfg->val_log_level < 2) 2207 return; 2208 for(p=origin; p; p=p->next) { 2209 char buf[256]; 2210 if(p == origin) 2211 snprintf(buf, sizeof(buf), "from "); 2212 else snprintf(buf, sizeof(buf), "and "); 2213 if(p->len == 0) 2214 snprintf(buf+strlen(buf), sizeof(buf)-strlen(buf), 2215 "cache"); 2216 else 2217 addr_to_str(&p->addr, p->len, buf+strlen(buf), 2218 sizeof(buf)-strlen(buf)); 2219 errinf(qstate, buf); 2220 } 2221 } 2222 2223 char* errinf_to_str(struct module_qstate* qstate) 2224 { 2225 char buf[20480]; 2226 char* p = buf; 2227 size_t left = sizeof(buf); 2228 struct config_strlist* s; 2229 char dname[LDNS_MAX_DOMAINLEN+1]; 2230 char t[16], c[16]; 2231 sldns_wire2str_type_buf(qstate->qinfo.qtype, t, sizeof(t)); 2232 sldns_wire2str_class_buf(qstate->qinfo.qclass, c, sizeof(c)); 2233 dname_str(qstate->qinfo.qname, dname); 2234 snprintf(p, left, "validation failure <%s %s %s>:", dname, t, c); 2235 left -= strlen(p); p += strlen(p); 2236 if(!qstate->errinf) 2237 snprintf(p, left, " misc failure"); 2238 else for(s=qstate->errinf; s; s=s->next) { 2239 snprintf(p, left, " %s", s->str); 2240 left -= strlen(p); p += strlen(p); 2241 } 2242 p = strdup(buf); 2243 if(!p) 2244 log_err("malloc failure in errinf_to_str"); 2245 return p; 2246 } 2247 2248 void errinf_rrset(struct module_qstate* qstate, struct ub_packed_rrset_key *rr) 2249 { 2250 char buf[1024]; 2251 char dname[LDNS_MAX_DOMAINLEN+1]; 2252 char t[16], c[16]; 2253 if(qstate->env->cfg->val_log_level < 2 || !rr) 2254 return; 2255 sldns_wire2str_type_buf(ntohs(rr->rk.type), t, sizeof(t)); 2256 sldns_wire2str_class_buf(ntohs(rr->rk.rrset_class), c, sizeof(c)); 2257 dname_str(rr->rk.dname, dname); 2258 snprintf(buf, sizeof(buf), "for <%s %s %s>", dname, t, c); 2259 errinf(qstate, buf); 2260 } 2261 2262 void errinf_dname(struct module_qstate* qstate, const char* str, uint8_t* dname) 2263 { 2264 char b[1024]; 2265 char buf[LDNS_MAX_DOMAINLEN+1]; 2266 if(qstate->env->cfg->val_log_level < 2 || !str || !dname) 2267 return; 2268 dname_str(dname, buf); 2269 snprintf(b, sizeof(b), "%s %s", str, buf); 2270 errinf(qstate, b); 2271 } 2272 2273 int options_remote_is_address(struct config_file* cfg) 2274 { 2275 if(!cfg->remote_control_enable) return 0; 2276 if(!cfg->control_ifs.first) return 1; 2277 if(!cfg->control_ifs.first->str) return 1; 2278 if(cfg->control_ifs.first->str[0] == 0) return 1; 2279 return (cfg->control_ifs.first->str[0] != '/'); 2280 } 2281