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