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 HAVE_PWD_H 66 #include <pwd.h> 67 #endif 68 69 /** from cfg username, after daemonise setup performed */ 70 uid_t cfg_uid = (uid_t)-1; 71 /** from cfg username, after daemonise setup performed */ 72 gid_t cfg_gid = (gid_t)-1; 73 /** for debug allow small timeout values for fast rollovers */ 74 int autr_permit_small_holddown = 0; 75 76 /** global config during parsing */ 77 struct config_parser_state* cfg_parser = 0; 78 79 /** init ports possible for use */ 80 static void init_outgoing_availports(int* array, int num); 81 82 struct config_file* 83 config_create(void) 84 { 85 struct config_file* cfg; 86 cfg = (struct config_file*)calloc(1, sizeof(struct config_file)); 87 if(!cfg) 88 return NULL; 89 /* the defaults if no config is present */ 90 cfg->verbosity = 1; 91 cfg->stat_interval = 0; 92 cfg->stat_cumulative = 0; 93 cfg->stat_extended = 0; 94 cfg->num_threads = 1; 95 cfg->port = UNBOUND_DNS_PORT; 96 cfg->do_ip4 = 1; 97 cfg->do_ip6 = 1; 98 cfg->do_udp = 1; 99 cfg->do_tcp = 1; 100 cfg->tcp_upstream = 0; 101 cfg->tcp_mss = 0; 102 cfg->outgoing_tcp_mss = 0; 103 cfg->ssl_service_key = NULL; 104 cfg->ssl_service_pem = NULL; 105 cfg->ssl_port = 853; 106 cfg->ssl_upstream = 0; 107 cfg->use_syslog = 1; 108 cfg->log_time_ascii = 0; 109 cfg->log_queries = 0; 110 #ifndef USE_WINSOCK 111 # ifdef USE_MINI_EVENT 112 /* select max 1024 sockets */ 113 cfg->outgoing_num_ports = 960; 114 cfg->num_queries_per_thread = 512; 115 # else 116 /* libevent can use many sockets */ 117 cfg->outgoing_num_ports = 4096; 118 cfg->num_queries_per_thread = 1024; 119 # endif 120 cfg->outgoing_num_tcp = 10; 121 cfg->incoming_num_tcp = 10; 122 #else 123 cfg->outgoing_num_ports = 48; /* windows is limited in num fds */ 124 cfg->num_queries_per_thread = 24; 125 cfg->outgoing_num_tcp = 2; /* leaves 64-52=12 for: 4if,1stop,thread4 */ 126 cfg->incoming_num_tcp = 2; 127 #endif 128 cfg->edns_buffer_size = 4096; /* 4k from rfc recommendation */ 129 cfg->msg_buffer_size = 65552; /* 64 k + a small margin */ 130 cfg->msg_cache_size = 4 * 1024 * 1024; 131 cfg->msg_cache_slabs = 4; 132 cfg->jostle_time = 200; 133 cfg->rrset_cache_size = 4 * 1024 * 1024; 134 cfg->rrset_cache_slabs = 4; 135 cfg->host_ttl = 900; 136 cfg->bogus_ttl = 60; 137 cfg->min_ttl = 0; 138 cfg->max_ttl = 3600 * 24; 139 cfg->max_negative_ttl = 3600; 140 cfg->prefetch = 0; 141 cfg->prefetch_key = 0; 142 cfg->infra_cache_slabs = 4; 143 cfg->infra_cache_numhosts = 10000; 144 cfg->infra_cache_min_rtt = 50; 145 cfg->delay_close = 0; 146 if(!(cfg->outgoing_avail_ports = (int*)calloc(65536, sizeof(int)))) 147 goto error_exit; 148 init_outgoing_availports(cfg->outgoing_avail_ports, 65536); 149 if(!(cfg->username = strdup(UB_USERNAME))) goto error_exit; 150 #ifdef HAVE_CHROOT 151 if(!(cfg->chrootdir = strdup(CHROOT_DIR))) goto error_exit; 152 #endif 153 if(!(cfg->directory = strdup(RUN_DIR))) goto error_exit; 154 if(!(cfg->logfile = strdup(""))) goto error_exit; 155 if(!(cfg->pidfile = strdup(PIDFILE))) goto error_exit; 156 if(!(cfg->target_fetch_policy = strdup("3 2 1 0 0"))) goto error_exit; 157 cfg->donotqueryaddrs = NULL; 158 cfg->donotquery_localhost = 1; 159 cfg->root_hints = NULL; 160 cfg->do_daemonize = 1; 161 cfg->if_automatic = 0; 162 cfg->so_rcvbuf = 0; 163 cfg->so_sndbuf = 0; 164 cfg->so_reuseport = 0; 165 cfg->ip_transparent = 0; 166 cfg->num_ifs = 0; 167 cfg->ifs = NULL; 168 cfg->num_out_ifs = 0; 169 cfg->out_ifs = NULL; 170 cfg->stubs = NULL; 171 cfg->forwards = NULL; 172 cfg->acls = NULL; 173 cfg->harden_short_bufsize = 0; 174 cfg->harden_large_queries = 0; 175 cfg->harden_glue = 1; 176 cfg->harden_dnssec_stripped = 1; 177 cfg->harden_below_nxdomain = 0; 178 cfg->harden_referral_path = 0; 179 cfg->harden_algo_downgrade = 0; 180 cfg->use_caps_bits_for_id = 0; 181 cfg->caps_whitelist = NULL; 182 cfg->private_address = NULL; 183 cfg->private_domain = NULL; 184 cfg->unwanted_threshold = 0; 185 cfg->hide_identity = 0; 186 cfg->hide_version = 0; 187 cfg->identity = NULL; 188 cfg->version = NULL; 189 cfg->auto_trust_anchor_file_list = NULL; 190 cfg->trust_anchor_file_list = NULL; 191 cfg->trust_anchor_list = NULL; 192 cfg->trusted_keys_file_list = NULL; 193 cfg->dlv_anchor_file = NULL; 194 cfg->dlv_anchor_list = NULL; 195 cfg->domain_insecure = NULL; 196 cfg->val_date_override = 0; 197 cfg->val_sig_skew_min = 3600; /* at least daylight savings trouble */ 198 cfg->val_sig_skew_max = 86400; /* at most timezone settings trouble */ 199 cfg->val_clean_additional = 1; 200 cfg->val_log_level = 0; 201 cfg->val_log_squelch = 0; 202 cfg->val_permissive_mode = 0; 203 cfg->ignore_cd = 0; 204 cfg->add_holddown = 30*24*3600; 205 cfg->del_holddown = 30*24*3600; 206 cfg->keep_missing = 366*24*3600; /* one year plus a little leeway */ 207 cfg->permit_small_holddown = 0; 208 cfg->key_cache_size = 4 * 1024 * 1024; 209 cfg->key_cache_slabs = 4; 210 cfg->neg_cache_size = 1 * 1024 * 1024; 211 cfg->local_zones = NULL; 212 cfg->local_zones_nodefault = NULL; 213 cfg->local_data = NULL; 214 cfg->unblock_lan_zones = 0; 215 cfg->insecure_lan_zones = 0; 216 cfg->python_script = NULL; 217 cfg->remote_control_enable = 0; 218 cfg->control_ifs = NULL; 219 cfg->control_port = UNBOUND_CONTROL_PORT; 220 cfg->remote_control_use_cert = 1; 221 cfg->minimal_responses = 0; 222 cfg->rrset_roundrobin = 0; 223 cfg->max_udp_size = 4096; 224 if(!(cfg->server_key_file = strdup(RUN_DIR"/unbound_server.key"))) 225 goto error_exit; 226 if(!(cfg->server_cert_file = strdup(RUN_DIR"/unbound_server.pem"))) 227 goto error_exit; 228 if(!(cfg->control_key_file = strdup(RUN_DIR"/unbound_control.key"))) 229 goto error_exit; 230 if(!(cfg->control_cert_file = strdup(RUN_DIR"/unbound_control.pem"))) 231 goto error_exit; 232 233 if(!(cfg->module_conf = strdup("validator iterator"))) goto error_exit; 234 if(!(cfg->val_nsec3_key_iterations = 235 strdup("1024 150 2048 500 4096 2500"))) goto error_exit; 236 #if defined(DNSTAP_SOCKET_PATH) 237 if(!(cfg->dnstap_socket_path = strdup(DNSTAP_SOCKET_PATH))) 238 goto error_exit; 239 #endif 240 cfg->ratelimit = 0; 241 cfg->ratelimit_slabs = 4; 242 cfg->ratelimit_size = 4*1024*1024; 243 cfg->ratelimit_for_domain = NULL; 244 cfg->ratelimit_below_domain = NULL; 245 cfg->ratelimit_factor = 10; 246 cfg->qname_minimisation = 0; 247 return cfg; 248 error_exit: 249 config_delete(cfg); 250 return NULL; 251 } 252 253 struct config_file* config_create_forlib(void) 254 { 255 struct config_file* cfg = config_create(); 256 if(!cfg) return NULL; 257 /* modifications for library use, less verbose, less memory */ 258 free(cfg->chrootdir); 259 cfg->chrootdir = NULL; 260 cfg->verbosity = 0; 261 cfg->outgoing_num_ports = 16; /* in library use, this is 'reasonable' 262 and probably within the ulimit(maxfds) of the user */ 263 cfg->outgoing_num_tcp = 2; 264 cfg->msg_cache_size = 1024*1024; 265 cfg->msg_cache_slabs = 1; 266 cfg->rrset_cache_size = 1024*1024; 267 cfg->rrset_cache_slabs = 1; 268 cfg->infra_cache_slabs = 1; 269 cfg->use_syslog = 0; 270 cfg->key_cache_size = 1024*1024; 271 cfg->key_cache_slabs = 1; 272 cfg->neg_cache_size = 100 * 1024; 273 cfg->donotquery_localhost = 0; /* allow, so that you can ask a 274 forward nameserver running on localhost */ 275 cfg->val_log_level = 2; /* to fill why_bogus with */ 276 cfg->val_log_squelch = 1; 277 return cfg; 278 } 279 280 /** check that the value passed is >= 0 */ 281 #define IS_NUMBER_OR_ZERO \ 282 if(atoi(val) == 0 && strcmp(val, "0") != 0) return 0 283 /** check that the value passed is > 0 */ 284 #define IS_NONZERO_NUMBER \ 285 if(atoi(val) == 0) return 0 286 /** check that the value passed is not 0 and a power of 2 */ 287 #define IS_POW2_NUMBER \ 288 if(atoi(val) == 0 || !is_pow2((size_t)atoi(val))) return 0 289 /** check that the value passed is yes or no */ 290 #define IS_YES_OR_NO \ 291 if(strcmp(val, "yes") != 0 && strcmp(val, "no") != 0) return 0 292 /** put integer_or_zero into variable */ 293 #define S_NUMBER_OR_ZERO(str, var) if(strcmp(opt, str) == 0) \ 294 { IS_NUMBER_OR_ZERO; cfg->var = atoi(val); } 295 /** put integer_nonzero into variable */ 296 #define S_NUMBER_NONZERO(str, var) if(strcmp(opt, str) == 0) \ 297 { IS_NONZERO_NUMBER; cfg->var = atoi(val); } 298 /** put integer_or_zero into unsigned */ 299 #define S_UNSIGNED_OR_ZERO(str, var) if(strcmp(opt, str) == 0) \ 300 { IS_NUMBER_OR_ZERO; cfg->var = (unsigned)atoi(val); } 301 /** put integer_or_zero into size_t */ 302 #define S_SIZET_OR_ZERO(str, var) if(strcmp(opt, str) == 0) \ 303 { IS_NUMBER_OR_ZERO; cfg->var = (size_t)atoi(val); } 304 /** put integer_nonzero into size_t */ 305 #define S_SIZET_NONZERO(str, var) if(strcmp(opt, str) == 0) \ 306 { IS_NONZERO_NUMBER; cfg->var = (size_t)atoi(val); } 307 /** put yesno into variable */ 308 #define S_YNO(str, var) if(strcmp(opt, str) == 0) \ 309 { IS_YES_OR_NO; cfg->var = (strcmp(val, "yes") == 0); } 310 /** put memsize into variable */ 311 #define S_MEMSIZE(str, var) if(strcmp(opt, str)==0) \ 312 { return cfg_parse_memsize(val, &cfg->var); } 313 /** put pow2 number into variable */ 314 #define S_POW2(str, var) if(strcmp(opt, str)==0) \ 315 { IS_POW2_NUMBER; cfg->var = (size_t)atoi(val); } 316 /** put string into variable */ 317 #define S_STR(str, var) if(strcmp(opt, str)==0) \ 318 { free(cfg->var); return (cfg->var = strdup(val)) != NULL; } 319 /** put string into strlist */ 320 #define S_STRLIST(str, var) if(strcmp(opt, str)==0) \ 321 { return cfg_strlist_insert(&cfg->var, strdup(val)); } 322 323 int config_set_option(struct config_file* cfg, const char* opt, 324 const char* val) 325 { 326 S_NUMBER_OR_ZERO("verbosity:", verbosity) 327 else if(strcmp(opt, "statistics-interval:") == 0) { 328 if(strcmp(val, "0") == 0 || strcmp(val, "") == 0) 329 cfg->stat_interval = 0; 330 else if(atoi(val) == 0) 331 return 0; 332 else cfg->stat_interval = atoi(val); 333 } else if(strcmp(opt, "num_threads:") == 0) { 334 /* not supported, library must have 1 thread in bgworker */ 335 return 0; 336 } else if(strcmp(opt, "outgoing-port-permit:") == 0) { 337 return cfg_mark_ports(val, 1, 338 cfg->outgoing_avail_ports, 65536); 339 } else if(strcmp(opt, "outgoing-port-avoid:") == 0) { 340 return cfg_mark_ports(val, 0, 341 cfg->outgoing_avail_ports, 65536); 342 } else if(strcmp(opt, "local-zone:") == 0) { 343 return cfg_parse_local_zone(cfg, val); 344 } else if(strcmp(opt, "val-override-date:") == 0) { 345 if(strcmp(val, "") == 0 || strcmp(val, "0") == 0) { 346 cfg->val_date_override = 0; 347 } else if(strlen(val) == 14) { 348 cfg->val_date_override = cfg_convert_timeval(val); 349 return cfg->val_date_override != 0; 350 } else { 351 if(atoi(val) == 0) return 0; 352 cfg->val_date_override = (uint32_t)atoi(val); 353 } 354 } else if(strcmp(opt, "local-data-ptr:") == 0) { 355 char* ptr = cfg_ptr_reverse((char*)opt); 356 return cfg_strlist_insert(&cfg->local_data, ptr); 357 } else if(strcmp(opt, "logfile:") == 0) { 358 cfg->use_syslog = 0; 359 free(cfg->logfile); 360 return (cfg->logfile = strdup(val)) != NULL; 361 } 362 else if(strcmp(opt, "log-time-ascii:") == 0) 363 { IS_YES_OR_NO; cfg->log_time_ascii = (strcmp(val, "yes") == 0); 364 log_set_time_asc(cfg->log_time_ascii); } 365 else S_SIZET_NONZERO("max-udp-size:", max_udp_size) 366 else S_YNO("use-syslog:", use_syslog) 367 else S_YNO("extended-statistics:", stat_extended) 368 else S_YNO("statistics-cumulative:", stat_cumulative) 369 else S_YNO("do-ip4:", do_ip4) 370 else S_YNO("do-ip6:", do_ip6) 371 else S_YNO("do-udp:", do_udp) 372 else S_YNO("do-tcp:", do_tcp) 373 else S_YNO("tcp-upstream:", tcp_upstream) 374 else S_NUMBER_NONZERO("tcp-mss:", tcp_mss) 375 else S_NUMBER_NONZERO("outgoing-tcp-mss:", outgoing_tcp_mss) 376 else S_YNO("ssl-upstream:", ssl_upstream) 377 else S_STR("ssl-service-key:", ssl_service_key) 378 else S_STR("ssl-service-pem:", ssl_service_pem) 379 else S_NUMBER_NONZERO("ssl-port:", ssl_port) 380 else S_YNO("interface-automatic:", if_automatic) 381 else S_YNO("do-daemonize:", do_daemonize) 382 else S_NUMBER_NONZERO("port:", port) 383 else S_NUMBER_NONZERO("outgoing-range:", outgoing_num_ports) 384 else S_SIZET_OR_ZERO("outgoing-num-tcp:", outgoing_num_tcp) 385 else S_SIZET_OR_ZERO("incoming-num-tcp:", incoming_num_tcp) 386 else S_SIZET_NONZERO("edns-buffer-size:", edns_buffer_size) 387 else S_SIZET_NONZERO("msg-buffer-size:", msg_buffer_size) 388 else S_MEMSIZE("msg-cache-size:", msg_cache_size) 389 else S_POW2("msg-cache-slabs:", msg_cache_slabs) 390 else S_SIZET_NONZERO("num-queries-per-thread:",num_queries_per_thread) 391 else S_SIZET_OR_ZERO("jostle-timeout:", jostle_time) 392 else S_MEMSIZE("so-rcvbuf:", so_rcvbuf) 393 else S_MEMSIZE("so-sndbuf:", so_sndbuf) 394 else S_YNO("so-reuseport:", so_reuseport) 395 else S_YNO("ip-transparent:", ip_transparent) 396 else S_MEMSIZE("rrset-cache-size:", rrset_cache_size) 397 else S_POW2("rrset-cache-slabs:", rrset_cache_slabs) 398 else S_YNO("prefetch:", prefetch) 399 else S_YNO("prefetch-key:", prefetch_key) 400 else if(strcmp(opt, "cache-max-ttl:") == 0) 401 { IS_NUMBER_OR_ZERO; cfg->max_ttl = atoi(val); MAX_TTL=(time_t)cfg->max_ttl;} 402 else if(strcmp(opt, "cache-max-negative-ttl:") == 0) 403 { IS_NUMBER_OR_ZERO; cfg->max_negative_ttl = atoi(val); MAX_NEG_TTL=(time_t)cfg->max_negative_ttl;} 404 else if(strcmp(opt, "cache-min-ttl:") == 0) 405 { IS_NUMBER_OR_ZERO; cfg->min_ttl = atoi(val); MIN_TTL=(time_t)cfg->min_ttl;} 406 else if(strcmp(opt, "infra-cache-min-rtt:") == 0) { 407 IS_NUMBER_OR_ZERO; cfg->infra_cache_min_rtt = atoi(val); 408 RTT_MIN_TIMEOUT=cfg->infra_cache_min_rtt; 409 } 410 else S_NUMBER_OR_ZERO("infra-host-ttl:", host_ttl) 411 else S_POW2("infra-cache-slabs:", infra_cache_slabs) 412 else S_SIZET_NONZERO("infra-cache-numhosts:", infra_cache_numhosts) 413 else S_NUMBER_OR_ZERO("delay-close:", delay_close) 414 else S_STR("chroot:", chrootdir) 415 else S_STR("username:", username) 416 else S_STR("directory:", directory) 417 else S_STR("pidfile:", pidfile) 418 else S_YNO("hide-identity:", hide_identity) 419 else S_YNO("hide-version:", hide_version) 420 else S_STR("identity:", identity) 421 else S_STR("version:", version) 422 else S_STRLIST("root-hints:", root_hints) 423 else S_STR("target-fetch-policy:", target_fetch_policy) 424 else S_YNO("harden-glue:", harden_glue) 425 else S_YNO("harden-short-bufsize:", harden_short_bufsize) 426 else S_YNO("harden-large-queries:", harden_large_queries) 427 else S_YNO("harden-dnssec-stripped:", harden_dnssec_stripped) 428 else S_YNO("harden-below-nxdomain:", harden_below_nxdomain) 429 else S_YNO("harden-referral-path:", harden_referral_path) 430 else S_YNO("harden-algo-downgrade:", harden_algo_downgrade) 431 else S_YNO("use-caps-for-id", use_caps_bits_for_id) 432 else S_STRLIST("caps-whitelist:", caps_whitelist) 433 else S_SIZET_OR_ZERO("unwanted-reply-threshold:", unwanted_threshold) 434 else S_STRLIST("private-address:", private_address) 435 else S_STRLIST("private-domain:", private_domain) 436 else S_YNO("do-not-query-localhost:", donotquery_localhost) 437 else S_STRLIST("do-not-query-address:", donotqueryaddrs) 438 else S_STRLIST("auto-trust-anchor-file:", auto_trust_anchor_file_list) 439 else S_STRLIST("trust-anchor-file:", trust_anchor_file_list) 440 else S_STRLIST("trust-anchor:", trust_anchor_list) 441 else S_STRLIST("trusted-keys-file:", trusted_keys_file_list) 442 else S_STR("dlv-anchor-file:", dlv_anchor_file) 443 else S_STRLIST("dlv-anchor:", dlv_anchor_list) 444 else S_STRLIST("domain-insecure:", domain_insecure) 445 else S_NUMBER_OR_ZERO("val-bogus-ttl:", bogus_ttl) 446 else S_YNO("val-clean-additional:", val_clean_additional) 447 else S_NUMBER_OR_ZERO("val-log-level:", val_log_level) 448 else S_YNO("val-log-squelch:", val_log_squelch) 449 else S_YNO("log-queries:", log_queries) 450 else S_YNO("val-permissive-mode:", val_permissive_mode) 451 else S_YNO("ignore-cd-flag:", ignore_cd) 452 else S_STR("val-nsec3-keysize-iterations:", val_nsec3_key_iterations) 453 else S_UNSIGNED_OR_ZERO("add-holddown:", add_holddown) 454 else S_UNSIGNED_OR_ZERO("del-holddown:", del_holddown) 455 else S_UNSIGNED_OR_ZERO("keep-missing:", keep_missing) 456 else if(strcmp(opt, "permit-small-holddown:") == 0) 457 { IS_YES_OR_NO; cfg->permit_small_holddown = (strcmp(val, "yes") == 0); 458 autr_permit_small_holddown = cfg->permit_small_holddown; } 459 else S_MEMSIZE("key-cache-size:", key_cache_size) 460 else S_POW2("key-cache-slabs:", key_cache_slabs) 461 else S_MEMSIZE("neg-cache-size:", neg_cache_size) 462 else S_YNO("minimal-responses:", minimal_responses) 463 else S_YNO("rrset-roundrobin:", rrset_roundrobin) 464 else S_STRLIST("local-data:", local_data) 465 else S_YNO("unblock-lan-zones:", unblock_lan_zones) 466 else S_YNO("insecure-lan-zones:", insecure_lan_zones) 467 else S_YNO("control-enable:", remote_control_enable) 468 else S_STRLIST("control-interface:", control_ifs) 469 else S_NUMBER_NONZERO("control-port:", control_port) 470 else S_STR("server-key-file:", server_key_file) 471 else S_STR("server-cert-file:", server_cert_file) 472 else S_STR("control-key-file:", control_key_file) 473 else S_STR("control-cert-file:", control_cert_file) 474 else S_STR("module-config:", module_conf) 475 else S_STR("python-script:", python_script) 476 else if(strcmp(opt, "ratelimit:") == 0) { 477 IS_NUMBER_OR_ZERO; cfg->ratelimit = atoi(val); 478 infra_dp_ratelimit=cfg->ratelimit; 479 } 480 else S_MEMSIZE("ratelimit-size:", ratelimit_size) 481 else S_POW2("ratelimit-slabs:", ratelimit_slabs) 482 else S_NUMBER_OR_ZERO("ratelimit-factor:", ratelimit_factor) 483 else S_YNO("qname-minimisation:", qname_minimisation) 484 /* val_sig_skew_min and max are copied into val_env during init, 485 * so this does not update val_env with set_option */ 486 else if(strcmp(opt, "val-sig-skew-min:") == 0) 487 { IS_NUMBER_OR_ZERO; cfg->val_sig_skew_min = (int32_t)atoi(val); } 488 else if(strcmp(opt, "val-sig-skew-max:") == 0) 489 { IS_NUMBER_OR_ZERO; cfg->val_sig_skew_max = (int32_t)atoi(val); } 490 else if (strcmp(opt, "outgoing-interface:") == 0) { 491 char* d = strdup(val); 492 char** oi = 493 (char**)reallocarray(NULL, (size_t)cfg->num_out_ifs+1, sizeof(char*)); 494 if(!d || !oi) { free(d); free(oi); return -1; } 495 if(cfg->out_ifs && cfg->num_out_ifs) { 496 memmove(oi, cfg->out_ifs, cfg->num_out_ifs*sizeof(char*)); 497 free(cfg->out_ifs); 498 } 499 oi[cfg->num_out_ifs++] = d; 500 cfg->out_ifs = oi; 501 } else { 502 /* unknown or unsupported (from the set_option interface): 503 * interface, outgoing-interface, access-control, 504 * stub-zone, name, stub-addr, stub-host, stub-prime 505 * forward-first, stub-first, 506 * forward-zone, name, forward-addr, forward-host, 507 * ratelimit-for-domain, ratelimit-below-domain */ 508 return 0; 509 } 510 return 1; 511 } 512 513 void config_print_func(char* line, void* arg) 514 { 515 FILE* f = (FILE*)arg; 516 (void)fprintf(f, "%s\n", line); 517 } 518 519 /** collate func arg */ 520 struct config_collate_arg { 521 /** list of result items */ 522 struct config_strlist_head list; 523 /** if a malloc error occurred, 0 is OK */ 524 int status; 525 }; 526 527 void config_collate_func(char* line, void* arg) 528 { 529 struct config_collate_arg* m = (struct config_collate_arg*)arg; 530 if(m->status) 531 return; 532 if(!cfg_strlist_append(&m->list, strdup(line))) 533 m->status = 1; 534 } 535 536 int config_get_option_list(struct config_file* cfg, const char* opt, 537 struct config_strlist** list) 538 { 539 struct config_collate_arg m; 540 memset(&m, 0, sizeof(m)); 541 *list = NULL; 542 if(!config_get_option(cfg, opt, config_collate_func, &m)) 543 return 1; 544 if(m.status) { 545 config_delstrlist(m.list.first); 546 return 2; 547 } 548 *list = m.list.first; 549 return 0; 550 } 551 552 int 553 config_get_option_collate(struct config_file* cfg, const char* opt, char** str) 554 { 555 struct config_strlist* list = NULL; 556 int r; 557 *str = NULL; 558 if((r = config_get_option_list(cfg, opt, &list)) != 0) 559 return r; 560 *str = config_collate_cat(list); 561 config_delstrlist(list); 562 if(!*str) return 2; 563 return 0; 564 } 565 566 char* 567 config_collate_cat(struct config_strlist* list) 568 { 569 size_t total = 0, left; 570 struct config_strlist* s; 571 char *r, *w; 572 if(!list) /* no elements */ 573 return strdup(""); 574 if(list->next == NULL) /* one element , no newline at end. */ 575 return strdup(list->str); 576 /* count total length */ 577 for(s=list; s; s=s->next) 578 total += strlen(s->str) + 1; /* len + newline */ 579 left = total+1; /* one extra for nul at end */ 580 r = malloc(left); 581 if(!r) 582 return NULL; 583 w = r; 584 for(s=list; s; s=s->next) { 585 size_t this = strlen(s->str); 586 if(this+2 > left) { /* sanity check */ 587 free(r); 588 return NULL; 589 } 590 snprintf(w, left, "%s\n", s->str); 591 this = strlen(w); 592 w += this; 593 left -= this; 594 } 595 return r; 596 } 597 598 /** compare and print decimal option */ 599 #define O_DEC(opt, str, var) if(strcmp(opt, str)==0) \ 600 {snprintf(buf, len, "%d", (int)cfg->var); \ 601 func(buf, arg);} 602 /** compare and print unsigned option */ 603 #define O_UNS(opt, str, var) if(strcmp(opt, str)==0) \ 604 {snprintf(buf, len, "%u", (unsigned)cfg->var); \ 605 func(buf, arg);} 606 /** compare and print yesno option */ 607 #define O_YNO(opt, str, var) if(strcmp(opt, str)==0) \ 608 {func(cfg->var?"yes":"no", arg);} 609 /** compare and print string option */ 610 #define O_STR(opt, str, var) if(strcmp(opt, str)==0) \ 611 {func(cfg->var?cfg->var:"", arg);} 612 /** compare and print array option */ 613 #define O_IFC(opt, str, num, arr) if(strcmp(opt, str)==0) \ 614 {int i; for(i=0; i<cfg->num; i++) func(cfg->arr[i], arg);} 615 /** compare and print memorysize option */ 616 #define O_MEM(opt, str, var) if(strcmp(opt, str)==0) { \ 617 if(cfg->var > 1024*1024*1024) { \ 618 size_t f=cfg->var/(size_t)1000000, b=cfg->var%(size_t)1000000; \ 619 snprintf(buf, len, "%u%6.6u", (unsigned)f, (unsigned)b); \ 620 } else snprintf(buf, len, "%u", (unsigned)cfg->var); \ 621 func(buf, arg);} 622 /** compare and print list option */ 623 #define O_LST(opt, name, lst) if(strcmp(opt, name)==0) { \ 624 struct config_strlist* p = cfg->lst; \ 625 for(p = cfg->lst; p; p = p->next) \ 626 func(p->str, arg); \ 627 } 628 /** compare and print list option */ 629 #define O_LS2(opt, name, lst) if(strcmp(opt, name)==0) { \ 630 struct config_str2list* p = cfg->lst; \ 631 for(p = cfg->lst; p; p = p->next) \ 632 snprintf(buf, len, "%s %s\n", p->str, p->str2); \ 633 func(buf, arg); \ 634 } 635 636 int 637 config_get_option(struct config_file* cfg, const char* opt, 638 void (*func)(char*,void*), void* arg) 639 { 640 char buf[1024]; 641 size_t len = sizeof(buf); 642 fptr_ok(fptr_whitelist_print_func(func)); 643 O_DEC(opt, "verbosity", verbosity) 644 else O_DEC(opt, "statistics-interval", stat_interval) 645 else O_YNO(opt, "statistics-cumulative", stat_cumulative) 646 else O_YNO(opt, "extended-statistics", stat_extended) 647 else O_YNO(opt, "use-syslog", use_syslog) 648 else O_YNO(opt, "log-time-ascii", log_time_ascii) 649 else O_DEC(opt, "num-threads", num_threads) 650 else O_IFC(opt, "interface", num_ifs, ifs) 651 else O_IFC(opt, "outgoing-interface", num_out_ifs, out_ifs) 652 else O_YNO(opt, "interface-automatic", if_automatic) 653 else O_DEC(opt, "port", port) 654 else O_DEC(opt, "outgoing-range", outgoing_num_ports) 655 else O_DEC(opt, "outgoing-num-tcp", outgoing_num_tcp) 656 else O_DEC(opt, "incoming-num-tcp", incoming_num_tcp) 657 else O_DEC(opt, "edns-buffer-size", edns_buffer_size) 658 else O_DEC(opt, "msg-buffer-size", msg_buffer_size) 659 else O_MEM(opt, "msg-cache-size", msg_cache_size) 660 else O_DEC(opt, "msg-cache-slabs", msg_cache_slabs) 661 else O_DEC(opt, "num-queries-per-thread", num_queries_per_thread) 662 else O_UNS(opt, "jostle-timeout", jostle_time) 663 else O_MEM(opt, "so-rcvbuf", so_rcvbuf) 664 else O_MEM(opt, "so-sndbuf", so_sndbuf) 665 else O_YNO(opt, "so-reuseport", so_reuseport) 666 else O_YNO(opt, "ip-transparent", ip_transparent) 667 else O_MEM(opt, "rrset-cache-size", rrset_cache_size) 668 else O_DEC(opt, "rrset-cache-slabs", rrset_cache_slabs) 669 else O_YNO(opt, "prefetch-key", prefetch_key) 670 else O_YNO(opt, "prefetch", prefetch) 671 else O_DEC(opt, "cache-max-ttl", max_ttl) 672 else O_DEC(opt, "cache-max-negative-ttl", max_negative_ttl) 673 else O_DEC(opt, "cache-min-ttl", min_ttl) 674 else O_DEC(opt, "infra-host-ttl", host_ttl) 675 else O_DEC(opt, "infra-cache-slabs", infra_cache_slabs) 676 else O_DEC(opt, "infra-cache-min-rtt", infra_cache_min_rtt) 677 else O_MEM(opt, "infra-cache-numhosts", infra_cache_numhosts) 678 else O_UNS(opt, "delay-close", delay_close) 679 else O_YNO(opt, "do-ip4", do_ip4) 680 else O_YNO(opt, "do-ip6", do_ip6) 681 else O_YNO(opt, "do-udp", do_udp) 682 else O_YNO(opt, "do-tcp", do_tcp) 683 else O_YNO(opt, "tcp-upstream", tcp_upstream) 684 else O_DEC(opt, "tcp-mss", tcp_mss) 685 else O_DEC(opt, "outgoing-tcp-mss", outgoing_tcp_mss) 686 else O_YNO(opt, "ssl-upstream", ssl_upstream) 687 else O_STR(opt, "ssl-service-key", ssl_service_key) 688 else O_STR(opt, "ssl-service-pem", ssl_service_pem) 689 else O_DEC(opt, "ssl-port", ssl_port) 690 else O_YNO(opt, "do-daemonize", do_daemonize) 691 else O_STR(opt, "chroot", chrootdir) 692 else O_STR(opt, "username", username) 693 else O_STR(opt, "directory", directory) 694 else O_STR(opt, "logfile", logfile) 695 else O_YNO(opt, "log-queries", log_queries) 696 else O_STR(opt, "pidfile", pidfile) 697 else O_YNO(opt, "hide-identity", hide_identity) 698 else O_YNO(opt, "hide-version", hide_version) 699 else O_STR(opt, "identity", identity) 700 else O_STR(opt, "version", version) 701 else O_STR(opt, "target-fetch-policy", target_fetch_policy) 702 else O_YNO(opt, "harden-short-bufsize", harden_short_bufsize) 703 else O_YNO(opt, "harden-large-queries", harden_large_queries) 704 else O_YNO(opt, "harden-glue", harden_glue) 705 else O_YNO(opt, "harden-dnssec-stripped", harden_dnssec_stripped) 706 else O_YNO(opt, "harden-below-nxdomain", harden_below_nxdomain) 707 else O_YNO(opt, "harden-referral-path", harden_referral_path) 708 else O_YNO(opt, "harden-algo-downgrade", harden_algo_downgrade) 709 else O_YNO(opt, "use-caps-for-id", use_caps_bits_for_id) 710 else O_LST(opt, "caps-whitelist", caps_whitelist) 711 else O_DEC(opt, "unwanted-reply-threshold", unwanted_threshold) 712 else O_YNO(opt, "do-not-query-localhost", donotquery_localhost) 713 else O_STR(opt, "module-config", module_conf) 714 else O_STR(opt, "dlv-anchor-file", dlv_anchor_file) 715 else O_DEC(opt, "val-bogus-ttl", bogus_ttl) 716 else O_YNO(opt, "val-clean-additional", val_clean_additional) 717 else O_DEC(opt, "val-log-level", val_log_level) 718 else O_YNO(opt, "val-permissive-mode", val_permissive_mode) 719 else O_YNO(opt, "ignore-cd-flag", ignore_cd) 720 else O_STR(opt, "val-nsec3-keysize-iterations",val_nsec3_key_iterations) 721 else O_UNS(opt, "add-holddown", add_holddown) 722 else O_UNS(opt, "del-holddown", del_holddown) 723 else O_UNS(opt, "keep-missing", keep_missing) 724 else O_YNO(opt, "permit-small-holddown", permit_small_holddown) 725 else O_MEM(opt, "key-cache-size", key_cache_size) 726 else O_DEC(opt, "key-cache-slabs", key_cache_slabs) 727 else O_MEM(opt, "neg-cache-size", neg_cache_size) 728 else O_YNO(opt, "control-enable", remote_control_enable) 729 else O_DEC(opt, "control-port", control_port) 730 else O_STR(opt, "server-key-file", server_key_file) 731 else O_STR(opt, "server-cert-file", server_cert_file) 732 else O_STR(opt, "control-key-file", control_key_file) 733 else O_STR(opt, "control-cert-file", control_cert_file) 734 else O_LST(opt, "root-hints", root_hints) 735 else O_LS2(opt, "access-control", acls) 736 else O_LST(opt, "do-not-query-address", donotqueryaddrs) 737 else O_LST(opt, "private-address", private_address) 738 else O_LST(opt, "private-domain", private_domain) 739 else O_LST(opt, "auto-trust-anchor-file", auto_trust_anchor_file_list) 740 else O_LST(opt, "trust-anchor-file", trust_anchor_file_list) 741 else O_LST(opt, "trust-anchor", trust_anchor_list) 742 else O_LST(opt, "trusted-keys-file", trusted_keys_file_list) 743 else O_LST(opt, "dlv-anchor", dlv_anchor_list) 744 else O_LST(opt, "control-interface", control_ifs) 745 else O_LST(opt, "domain-insecure", domain_insecure) 746 else O_UNS(opt, "val-override-date", val_date_override) 747 else O_YNO(opt, "minimal-responses", minimal_responses) 748 else O_YNO(opt, "rrset-roundrobin", rrset_roundrobin) 749 else O_YNO(opt, "unblock-lan-zones", unblock_lan_zones) 750 else O_YNO(opt, "insecure-lan-zones", insecure_lan_zones) 751 else O_DEC(opt, "max-udp-size", max_udp_size) 752 else O_STR(opt, "python-script", python_script) 753 else O_DEC(opt, "ratelimit", ratelimit) 754 else O_MEM(opt, "ratelimit-size", ratelimit_size) 755 else O_DEC(opt, "ratelimit-slabs", ratelimit_slabs) 756 else O_LS2(opt, "ratelimit-for-domain", ratelimit_for_domain) 757 else O_LS2(opt, "ratelimit-below-domain", ratelimit_below_domain) 758 else O_DEC(opt, "ratelimit-factor", ratelimit_factor) 759 else O_DEC(opt, "val-sig-skew-min", val_sig_skew_min) 760 else O_DEC(opt, "val-sig-skew-max", val_sig_skew_max) 761 else O_YNO(opt, "qname-minimisation", qname_minimisation) 762 /* not here: 763 * outgoing-permit, outgoing-avoid - have list of ports 764 * local-zone - zones and nodefault variables 765 * local-data - see below 766 * local-data-ptr - converted to local-data entries 767 * stub-zone, name, stub-addr, stub-host, stub-prime 768 * forward-zone, name, forward-addr, forward-host 769 */ 770 else return 0; 771 return 1; 772 } 773 774 /** initialize the global cfg_parser object */ 775 static void 776 create_cfg_parser(struct config_file* cfg, char* filename, const char* chroot) 777 { 778 static struct config_parser_state st; 779 cfg_parser = &st; 780 cfg_parser->filename = filename; 781 cfg_parser->line = 1; 782 cfg_parser->errors = 0; 783 cfg_parser->cfg = cfg; 784 cfg_parser->chroot = chroot; 785 init_cfg_parse(); 786 } 787 788 int 789 config_read(struct config_file* cfg, const char* filename, const char* chroot) 790 { 791 FILE *in; 792 char *fname = (char*)filename; 793 #ifdef HAVE_GLOB 794 glob_t g; 795 size_t i; 796 int r, flags; 797 #endif 798 if(!fname) 799 return 1; 800 801 /* check for wildcards */ 802 #ifdef HAVE_GLOB 803 if(!(!strchr(fname, '*') && !strchr(fname, '?') && !strchr(fname, '[') && 804 !strchr(fname, '{') && !strchr(fname, '~'))) { 805 verbose(VERB_QUERY, "wildcard found, processing %s", fname); 806 flags = 0 807 #ifdef GLOB_ERR 808 | GLOB_ERR 809 #endif 810 #ifdef GLOB_NOSORT 811 | GLOB_NOSORT 812 #endif 813 #ifdef GLOB_BRACE 814 | GLOB_BRACE 815 #endif 816 #ifdef GLOB_TILDE 817 | GLOB_TILDE 818 #endif 819 ; 820 memset(&g, 0, sizeof(g)); 821 r = glob(fname, flags, NULL, &g); 822 if(r) { 823 /* some error */ 824 globfree(&g); 825 if(r == GLOB_NOMATCH) { 826 verbose(VERB_QUERY, "include: " 827 "no matches for %s", fname); 828 return 1; 829 } else if(r == GLOB_NOSPACE) { 830 log_err("include: %s: " 831 "fnametern out of memory", fname); 832 } else if(r == GLOB_ABORTED) { 833 log_err("wildcard include: %s: expansion " 834 "aborted (%s)", fname, strerror(errno)); 835 } else { 836 log_err("wildcard include: %s: expansion " 837 "failed (%s)", fname, strerror(errno)); 838 } 839 /* ignore globs that yield no files */ 840 return 1; 841 } 842 /* process files found, if any */ 843 for(i=0; i<(size_t)g.gl_pathc; i++) { 844 if(!config_read(cfg, g.gl_pathv[i], chroot)) { 845 log_err("error reading wildcard " 846 "include: %s", g.gl_pathv[i]); 847 globfree(&g); 848 return 0; 849 } 850 } 851 globfree(&g); 852 return 1; 853 } 854 #endif /* HAVE_GLOB */ 855 856 in = fopen(fname, "r"); 857 if(!in) { 858 log_err("Could not open %s: %s", fname, strerror(errno)); 859 return 0; 860 } 861 create_cfg_parser(cfg, fname, chroot); 862 ub_c_in = in; 863 ub_c_parse(); 864 fclose(in); 865 866 if(cfg_parser->errors != 0) { 867 fprintf(stderr, "read %s failed: %d errors in configuration file\n", 868 fname, cfg_parser->errors); 869 errno=EINVAL; 870 return 0; 871 } 872 873 return 1; 874 } 875 876 struct config_stub* cfg_stub_find(struct config_stub*** pp, const char* nm) 877 { 878 struct config_stub* p = *(*pp); 879 while(p) { 880 if(strcmp(p->name, nm) == 0) 881 return p; 882 (*pp) = &p->next; 883 p = p->next; 884 } 885 return NULL; 886 } 887 888 void 889 config_delstrlist(struct config_strlist* p) 890 { 891 struct config_strlist *np; 892 while(p) { 893 np = p->next; 894 free(p->str); 895 free(p); 896 p = np; 897 } 898 } 899 900 void 901 config_deldblstrlist(struct config_str2list* p) 902 { 903 struct config_str2list *np; 904 while(p) { 905 np = p->next; 906 free(p->str); 907 free(p->str2); 908 free(p); 909 p = np; 910 } 911 } 912 913 void 914 config_delstub(struct config_stub* p) 915 { 916 if(!p) return; 917 free(p->name); 918 config_delstrlist(p->hosts); 919 config_delstrlist(p->addrs); 920 free(p); 921 } 922 923 void 924 config_delstubs(struct config_stub* p) 925 { 926 struct config_stub* np; 927 while(p) { 928 np = p->next; 929 config_delstub(p); 930 p = np; 931 } 932 } 933 934 void 935 config_delete(struct config_file* cfg) 936 { 937 if(!cfg) return; 938 free(cfg->username); 939 free(cfg->chrootdir); 940 free(cfg->directory); 941 free(cfg->logfile); 942 free(cfg->pidfile); 943 free(cfg->target_fetch_policy); 944 free(cfg->ssl_service_key); 945 free(cfg->ssl_service_pem); 946 if(cfg->ifs) { 947 int i; 948 for(i=0; i<cfg->num_ifs; i++) 949 free(cfg->ifs[i]); 950 free(cfg->ifs); 951 } 952 if(cfg->out_ifs) { 953 int i; 954 for(i=0; i<cfg->num_out_ifs; i++) 955 free(cfg->out_ifs[i]); 956 free(cfg->out_ifs); 957 } 958 config_delstubs(cfg->stubs); 959 config_delstubs(cfg->forwards); 960 config_delstrlist(cfg->donotqueryaddrs); 961 config_delstrlist(cfg->root_hints); 962 free(cfg->identity); 963 free(cfg->version); 964 free(cfg->module_conf); 965 free(cfg->outgoing_avail_ports); 966 config_delstrlist(cfg->caps_whitelist); 967 config_delstrlist(cfg->private_address); 968 config_delstrlist(cfg->private_domain); 969 config_delstrlist(cfg->auto_trust_anchor_file_list); 970 config_delstrlist(cfg->trust_anchor_file_list); 971 config_delstrlist(cfg->trusted_keys_file_list); 972 config_delstrlist(cfg->trust_anchor_list); 973 config_delstrlist(cfg->domain_insecure); 974 free(cfg->dlv_anchor_file); 975 config_delstrlist(cfg->dlv_anchor_list); 976 config_deldblstrlist(cfg->acls); 977 free(cfg->val_nsec3_key_iterations); 978 config_deldblstrlist(cfg->local_zones); 979 config_delstrlist(cfg->local_zones_nodefault); 980 config_delstrlist(cfg->local_data); 981 config_delstrlist(cfg->control_ifs); 982 free(cfg->server_key_file); 983 free(cfg->server_cert_file); 984 free(cfg->control_key_file); 985 free(cfg->control_cert_file); 986 free(cfg->dns64_prefix); 987 free(cfg->dnstap_socket_path); 988 free(cfg->dnstap_identity); 989 free(cfg->dnstap_version); 990 config_deldblstrlist(cfg->ratelimit_for_domain); 991 config_deldblstrlist(cfg->ratelimit_below_domain); 992 free(cfg); 993 } 994 995 static void 996 init_outgoing_availports(int* a, int num) 997 { 998 /* generated with make iana_update */ 999 const int iana_assigned[] = { 1000 #include "util/iana_ports.inc" 1001 -1 }; /* end marker to put behind trailing comma */ 1002 1003 int i; 1004 /* do not use <1024, that could be trouble with the system, privs */ 1005 for(i=1024; i<num; i++) { 1006 a[i] = i; 1007 } 1008 /* create empty spot at 49152 to keep ephemeral ports available 1009 * to other programs */ 1010 for(i=49152; i<49152+256; i++) 1011 a[i] = 0; 1012 /* pick out all the IANA assigned ports */ 1013 for(i=0; iana_assigned[i]!=-1; i++) { 1014 if(iana_assigned[i] < num) 1015 a[iana_assigned[i]] = 0; 1016 } 1017 } 1018 1019 int 1020 cfg_mark_ports(const char* str, int allow, int* avail, int num) 1021 { 1022 char* mid = strchr(str, '-'); 1023 if(!mid) { 1024 int port = atoi(str); 1025 if(port == 0 && strcmp(str, "0") != 0) { 1026 log_err("cannot parse port number '%s'", str); 1027 return 0; 1028 } 1029 if(port < num) 1030 avail[port] = (allow?port:0); 1031 } else { 1032 int i, low, high = atoi(mid+1); 1033 char buf[16]; 1034 if(high == 0 && strcmp(mid+1, "0") != 0) { 1035 log_err("cannot parse port number '%s'", mid+1); 1036 return 0; 1037 } 1038 if( (int)(mid-str)+1 >= (int)sizeof(buf) ) { 1039 log_err("cannot parse port number '%s'", str); 1040 return 0; 1041 } 1042 if(mid > str) 1043 memcpy(buf, str, (size_t)(mid-str)); 1044 buf[mid-str] = 0; 1045 low = atoi(buf); 1046 if(low == 0 && strcmp(buf, "0") != 0) { 1047 log_err("cannot parse port number '%s'", buf); 1048 return 0; 1049 } 1050 for(i=low; i<=high; i++) { 1051 if(i < num) 1052 avail[i] = (allow?i:0); 1053 } 1054 return 1; 1055 } 1056 return 1; 1057 } 1058 1059 int 1060 cfg_scan_ports(int* avail, int num) 1061 { 1062 int i; 1063 int count = 0; 1064 for(i=0; i<num; i++) { 1065 if(avail[i]) 1066 count++; 1067 } 1068 return count; 1069 } 1070 1071 int cfg_condense_ports(struct config_file* cfg, int** avail) 1072 { 1073 int num = cfg_scan_ports(cfg->outgoing_avail_ports, 65536); 1074 int i, at = 0; 1075 *avail = NULL; 1076 if(num == 0) 1077 return 0; 1078 *avail = (int*)reallocarray(NULL, (size_t)num, sizeof(int)); 1079 if(!*avail) 1080 return 0; 1081 for(i=0; i<65536; i++) { 1082 if(cfg->outgoing_avail_ports[i]) 1083 (*avail)[at++] = cfg->outgoing_avail_ports[i]; 1084 } 1085 log_assert(at == num); 1086 return num; 1087 } 1088 1089 /** print error with file and line number */ 1090 static void ub_c_error_va_list(const char *fmt, va_list args) 1091 { 1092 cfg_parser->errors++; 1093 fprintf(stderr, "%s:%d: error: ", cfg_parser->filename, 1094 cfg_parser->line); 1095 vfprintf(stderr, fmt, args); 1096 fprintf(stderr, "\n"); 1097 } 1098 1099 /** print error with file and line number */ 1100 void ub_c_error_msg(const char* fmt, ...) 1101 { 1102 va_list args; 1103 va_start(args, fmt); 1104 ub_c_error_va_list(fmt, args); 1105 va_end(args); 1106 } 1107 1108 void ub_c_error(const char *str) 1109 { 1110 cfg_parser->errors++; 1111 fprintf(stderr, "%s:%d: error: %s\n", cfg_parser->filename, 1112 cfg_parser->line, str); 1113 } 1114 1115 int ub_c_wrap(void) 1116 { 1117 return 1; 1118 } 1119 1120 int cfg_strlist_append(struct config_strlist_head* list, char* item) 1121 { 1122 struct config_strlist *s; 1123 if(!item || !list) 1124 return 0; 1125 s = (struct config_strlist*)calloc(1, sizeof(struct config_strlist)); 1126 if(!s) 1127 return 0; 1128 s->str = item; 1129 s->next = NULL; 1130 if(list->last) 1131 list->last->next = s; 1132 else 1133 list->first = s; 1134 list->last = s; 1135 return 1; 1136 } 1137 1138 int 1139 cfg_strlist_insert(struct config_strlist** head, char* item) 1140 { 1141 struct config_strlist *s; 1142 if(!item || !head) 1143 return 0; 1144 s = (struct config_strlist*)calloc(1, sizeof(struct config_strlist)); 1145 if(!s) 1146 return 0; 1147 s->str = item; 1148 s->next = *head; 1149 *head = s; 1150 return 1; 1151 } 1152 1153 int 1154 cfg_str2list_insert(struct config_str2list** head, char* item, char* i2) 1155 { 1156 struct config_str2list *s; 1157 if(!item || !i2 || !head) 1158 return 0; 1159 s = (struct config_str2list*)calloc(1, sizeof(struct config_str2list)); 1160 if(!s) 1161 return 0; 1162 s->str = item; 1163 s->str2 = i2; 1164 s->next = *head; 1165 *head = s; 1166 return 1; 1167 } 1168 1169 time_t 1170 cfg_convert_timeval(const char* str) 1171 { 1172 time_t t; 1173 struct tm tm; 1174 memset(&tm, 0, sizeof(tm)); 1175 if(strlen(str) < 14) 1176 return 0; 1177 if(sscanf(str, "%4d%2d%2d%2d%2d%2d", &tm.tm_year, &tm.tm_mon, 1178 &tm.tm_mday, &tm.tm_hour, &tm.tm_min, &tm.tm_sec) != 6) 1179 return 0; 1180 tm.tm_year -= 1900; 1181 tm.tm_mon--; 1182 /* Check values */ 1183 if (tm.tm_year < 70) return 0; 1184 if (tm.tm_mon < 0 || tm.tm_mon > 11) return 0; 1185 if (tm.tm_mday < 1 || tm.tm_mday > 31) return 0; 1186 if (tm.tm_hour < 0 || tm.tm_hour > 23) return 0; 1187 if (tm.tm_min < 0 || tm.tm_min > 59) return 0; 1188 if (tm.tm_sec < 0 || tm.tm_sec > 59) return 0; 1189 /* call ldns conversion function */ 1190 t = sldns_mktime_from_utc(&tm); 1191 return t; 1192 } 1193 1194 int 1195 cfg_count_numbers(const char* s) 1196 { 1197 /* format ::= (sp num)+ sp */ 1198 /* num ::= [-](0-9)+ */ 1199 /* sp ::= (space|tab)* */ 1200 int num = 0; 1201 while(*s) { 1202 while(*s && isspace((unsigned char)*s)) 1203 s++; 1204 if(!*s) /* end of string */ 1205 break; 1206 if(*s == '-') 1207 s++; 1208 if(!*s) /* only - not allowed */ 1209 return 0; 1210 if(!isdigit((unsigned char)*s)) /* bad character */ 1211 return 0; 1212 while(*s && isdigit((unsigned char)*s)) 1213 s++; 1214 num++; 1215 } 1216 return num; 1217 } 1218 1219 /** all digit number */ 1220 static int isalldigit(const char* str, size_t l) 1221 { 1222 size_t i; 1223 for(i=0; i<l; i++) 1224 if(!isdigit((unsigned char)str[i])) 1225 return 0; 1226 return 1; 1227 } 1228 1229 int 1230 cfg_parse_memsize(const char* str, size_t* res) 1231 { 1232 size_t len; 1233 size_t mult = 1; 1234 if(!str || (len=(size_t)strlen(str)) == 0) { 1235 log_err("not a size: '%s'", str); 1236 return 0; 1237 } 1238 if(isalldigit(str, len)) { 1239 *res = (size_t)atol(str); 1240 return 1; 1241 } 1242 /* check appended num */ 1243 while(len>0 && str[len-1]==' ') 1244 len--; 1245 if(len > 1 && str[len-1] == 'b') 1246 len--; 1247 else if(len > 1 && str[len-1] == 'B') 1248 len--; 1249 1250 if(len > 1 && tolower((unsigned char)str[len-1]) == 'g') 1251 mult = 1024*1024*1024; 1252 else if(len > 1 && tolower((unsigned char)str[len-1]) == 'm') 1253 mult = 1024*1024; 1254 else if(len > 1 && tolower((unsigned char)str[len-1]) == 'k') 1255 mult = 1024; 1256 else if(len > 0 && isdigit((unsigned char)str[len-1])) 1257 mult = 1; 1258 else { 1259 log_err("unknown size specifier: '%s'", str); 1260 return 0; 1261 } 1262 while(len>1 && str[len-2]==' ') 1263 len--; 1264 1265 if(!isalldigit(str, len-1)) { 1266 log_err("unknown size specifier: '%s'", str); 1267 return 0; 1268 } 1269 *res = ((size_t)atol(str)) * mult; 1270 return 1; 1271 } 1272 1273 void 1274 config_apply(struct config_file* config) 1275 { 1276 MAX_TTL = (time_t)config->max_ttl; 1277 MIN_TTL = (time_t)config->min_ttl; 1278 MAX_NEG_TTL = (time_t)config->max_negative_ttl; 1279 RTT_MIN_TIMEOUT = config->infra_cache_min_rtt; 1280 EDNS_ADVERTISED_SIZE = (uint16_t)config->edns_buffer_size; 1281 MINIMAL_RESPONSES = config->minimal_responses; 1282 RRSET_ROUNDROBIN = config->rrset_roundrobin; 1283 log_set_time_asc(config->log_time_ascii); 1284 autr_permit_small_holddown = config->permit_small_holddown; 1285 } 1286 1287 void config_lookup_uid(struct config_file* cfg) 1288 { 1289 #ifdef HAVE_GETPWNAM 1290 /* translate username into uid and gid */ 1291 if(cfg->username && cfg->username[0]) { 1292 struct passwd *pwd; 1293 if((pwd = getpwnam(cfg->username)) != NULL) { 1294 cfg_uid = pwd->pw_uid; 1295 cfg_gid = pwd->pw_gid; 1296 } 1297 } 1298 #else 1299 (void)cfg; 1300 #endif 1301 } 1302 1303 /** 1304 * Calculate string length of full pathname in original filesys 1305 * @param fname: the path name to convert. 1306 * Must not be null or empty. 1307 * @param cfg: config struct for chroot and chdir (if set). 1308 * @param use_chdir: if false, only chroot is applied. 1309 * @return length of string. 1310 * remember to allocate one more for 0 at end in mallocs. 1311 */ 1312 static size_t 1313 strlen_after_chroot(const char* fname, struct config_file* cfg, int use_chdir) 1314 { 1315 size_t len = 0; 1316 int slashit = 0; 1317 if(cfg->chrootdir && cfg->chrootdir[0] && 1318 strncmp(cfg->chrootdir, fname, strlen(cfg->chrootdir)) == 0) { 1319 /* already full pathname, return it */ 1320 return strlen(fname); 1321 } 1322 /* chroot */ 1323 if(cfg->chrootdir && cfg->chrootdir[0]) { 1324 /* start with chrootdir */ 1325 len += strlen(cfg->chrootdir); 1326 slashit = 1; 1327 } 1328 /* chdir */ 1329 #ifdef UB_ON_WINDOWS 1330 if(fname[0] != 0 && fname[1] == ':') { 1331 /* full path, no chdir */ 1332 } else 1333 #endif 1334 if(fname[0] == '/' || !use_chdir) { 1335 /* full path, no chdir */ 1336 } else if(cfg->directory && cfg->directory[0]) { 1337 /* prepend chdir */ 1338 if(slashit && cfg->directory[0] != '/') 1339 len++; 1340 if(cfg->chrootdir && cfg->chrootdir[0] && 1341 strncmp(cfg->chrootdir, cfg->directory, 1342 strlen(cfg->chrootdir)) == 0) 1343 len += strlen(cfg->directory)-strlen(cfg->chrootdir); 1344 else len += strlen(cfg->directory); 1345 slashit = 1; 1346 } 1347 /* fname */ 1348 if(slashit && fname[0] != '/') 1349 len++; 1350 len += strlen(fname); 1351 return len; 1352 } 1353 1354 char* 1355 fname_after_chroot(const char* fname, struct config_file* cfg, int use_chdir) 1356 { 1357 size_t len = strlen_after_chroot(fname, cfg, use_chdir)+1; 1358 int slashit = 0; 1359 char* buf = (char*)malloc(len); 1360 if(!buf) 1361 return NULL; 1362 buf[0] = 0; 1363 /* is fname already in chroot ? */ 1364 if(cfg->chrootdir && cfg->chrootdir[0] && 1365 strncmp(cfg->chrootdir, fname, strlen(cfg->chrootdir)) == 0) { 1366 /* already full pathname, return it */ 1367 (void)strlcpy(buf, fname, len); 1368 buf[len-1] = 0; 1369 return buf; 1370 } 1371 /* chroot */ 1372 if(cfg->chrootdir && cfg->chrootdir[0]) { 1373 /* start with chrootdir */ 1374 (void)strlcpy(buf, cfg->chrootdir, len); 1375 slashit = 1; 1376 } 1377 #ifdef UB_ON_WINDOWS 1378 if(fname[0] != 0 && fname[1] == ':') { 1379 /* full path, no chdir */ 1380 } else 1381 #endif 1382 /* chdir */ 1383 if(fname[0] == '/' || !use_chdir) { 1384 /* full path, no chdir */ 1385 } else if(cfg->directory && cfg->directory[0]) { 1386 /* prepend chdir */ 1387 if(slashit && cfg->directory[0] != '/') 1388 (void)strlcat(buf, "/", len); 1389 /* is the directory already in the chroot? */ 1390 if(cfg->chrootdir && cfg->chrootdir[0] && 1391 strncmp(cfg->chrootdir, cfg->directory, 1392 strlen(cfg->chrootdir)) == 0) 1393 (void)strlcat(buf, cfg->directory+strlen(cfg->chrootdir), 1394 len); 1395 else (void)strlcat(buf, cfg->directory, len); 1396 slashit = 1; 1397 } 1398 /* fname */ 1399 if(slashit && fname[0] != '/') 1400 (void)strlcat(buf, "/", len); 1401 (void)strlcat(buf, fname, len); 1402 buf[len-1] = 0; 1403 return buf; 1404 } 1405 1406 /** return next space character in string */ 1407 static char* next_space_pos(const char* str) 1408 { 1409 char* sp = strchr(str, ' '); 1410 char* tab = strchr(str, '\t'); 1411 if(!tab && !sp) 1412 return NULL; 1413 if(!sp) return tab; 1414 if(!tab) return sp; 1415 return (sp<tab)?sp:tab; 1416 } 1417 1418 /** return last space character in string */ 1419 static char* last_space_pos(const char* str) 1420 { 1421 char* sp = strrchr(str, ' '); 1422 char* tab = strrchr(str, '\t'); 1423 if(!tab && !sp) 1424 return NULL; 1425 if(!sp) return tab; 1426 if(!tab) return sp; 1427 return (sp>tab)?sp:tab; 1428 } 1429 1430 int 1431 cfg_parse_local_zone(struct config_file* cfg, const char* val) 1432 { 1433 const char *type, *name_end, *name; 1434 char buf[256]; 1435 1436 /* parse it as: [zone_name] [between stuff] [zone_type] */ 1437 name = val; 1438 while(*name && isspace((unsigned char)*name)) 1439 name++; 1440 if(!*name) { 1441 log_err("syntax error: too short: %s", val); 1442 return 0; 1443 } 1444 name_end = next_space_pos(name); 1445 if(!name_end || !*name_end) { 1446 log_err("syntax error: expected zone type: %s", val); 1447 return 0; 1448 } 1449 if (name_end - name > 255) { 1450 log_err("syntax error: bad zone name: %s", val); 1451 return 0; 1452 } 1453 (void)strlcpy(buf, name, sizeof(buf)); 1454 buf[name_end-name] = '\0'; 1455 1456 type = last_space_pos(name_end); 1457 while(type && *type && isspace((unsigned char)*type)) 1458 type++; 1459 if(!type || !*type) { 1460 log_err("syntax error: expected zone type: %s", val); 1461 return 0; 1462 } 1463 1464 if(strcmp(type, "nodefault")==0) { 1465 return cfg_strlist_insert(&cfg->local_zones_nodefault, 1466 strdup(name)); 1467 } else { 1468 return cfg_str2list_insert(&cfg->local_zones, strdup(buf), 1469 strdup(type)); 1470 } 1471 } 1472 1473 char* cfg_ptr_reverse(char* str) 1474 { 1475 char* ip, *ip_end; 1476 char* name; 1477 char* result; 1478 char buf[1024]; 1479 struct sockaddr_storage addr; 1480 socklen_t addrlen; 1481 1482 /* parse it as: [IP] [between stuff] [name] */ 1483 ip = str; 1484 while(*ip && isspace((unsigned char)*ip)) 1485 ip++; 1486 if(!*ip) { 1487 log_err("syntax error: too short: %s", str); 1488 return NULL; 1489 } 1490 ip_end = next_space_pos(ip); 1491 if(!ip_end || !*ip_end) { 1492 log_err("syntax error: expected name: %s", str); 1493 return NULL; 1494 } 1495 1496 name = last_space_pos(ip_end); 1497 if(!name || !*name) { 1498 log_err("syntax error: expected name: %s", str); 1499 return NULL; 1500 } 1501 1502 sscanf(ip, "%100s", buf); 1503 buf[sizeof(buf)-1]=0; 1504 1505 if(!ipstrtoaddr(buf, UNBOUND_DNS_PORT, &addr, &addrlen)) { 1506 log_err("syntax error: cannot parse address: %s", str); 1507 return NULL; 1508 } 1509 1510 /* reverse IPv4: 1511 * ddd.ddd.ddd.ddd.in-addr-arpa. 1512 * IPv6: (h.){32}.ip6.arpa. */ 1513 1514 if(addr_is_ip6(&addr, addrlen)) { 1515 uint8_t ad[16]; 1516 const char* hex = "0123456789abcdef"; 1517 char *p = buf; 1518 int i; 1519 memmove(ad, &((struct sockaddr_in6*)&addr)->sin6_addr, 1520 sizeof(ad)); 1521 for(i=15; i>=0; i--) { 1522 uint8_t b = ad[i]; 1523 *p++ = hex[ (b&0x0f) ]; 1524 *p++ = '.'; 1525 *p++ = hex[ (b&0xf0) >> 4 ]; 1526 *p++ = '.'; 1527 } 1528 snprintf(buf+16*4, sizeof(buf)-16*4, "ip6.arpa. "); 1529 } else { 1530 uint8_t ad[4]; 1531 memmove(ad, &((struct sockaddr_in*)&addr)->sin_addr, 1532 sizeof(ad)); 1533 snprintf(buf, sizeof(buf), "%u.%u.%u.%u.in-addr.arpa. ", 1534 (unsigned)ad[3], (unsigned)ad[2], 1535 (unsigned)ad[1], (unsigned)ad[0]); 1536 } 1537 1538 /* printed the reverse address, now the between goop and name on end */ 1539 while(*ip_end && isspace((unsigned char)*ip_end)) 1540 ip_end++; 1541 if(name>ip_end) { 1542 snprintf(buf+strlen(buf), sizeof(buf)-strlen(buf), "%.*s", 1543 (int)(name-ip_end), ip_end); 1544 } 1545 snprintf(buf+strlen(buf), sizeof(buf)-strlen(buf), " PTR %s", name); 1546 1547 result = strdup(buf); 1548 if(!result) { 1549 log_err("out of memory parsing %s", str); 1550 return NULL; 1551 } 1552 return result; 1553 } 1554 1555 #ifdef UB_ON_WINDOWS 1556 char* 1557 w_lookup_reg_str(const char* key, const char* name) 1558 { 1559 HKEY hk = NULL; 1560 DWORD type = 0; 1561 BYTE buf[1024]; 1562 DWORD len = (DWORD)sizeof(buf); 1563 LONG ret; 1564 char* result = NULL; 1565 ret = RegOpenKeyEx(HKEY_LOCAL_MACHINE, key, 0, KEY_READ, &hk); 1566 if(ret == ERROR_FILE_NOT_FOUND) 1567 return NULL; /* key does not exist */ 1568 else if(ret != ERROR_SUCCESS) { 1569 log_err("RegOpenKeyEx failed"); 1570 return NULL; 1571 } 1572 ret = RegQueryValueEx(hk, (LPCTSTR)name, 0, &type, buf, &len); 1573 if(RegCloseKey(hk)) 1574 log_err("RegCloseKey"); 1575 if(ret == ERROR_FILE_NOT_FOUND) 1576 return NULL; /* name does not exist */ 1577 else if(ret != ERROR_SUCCESS) { 1578 log_err("RegQueryValueEx failed"); 1579 return NULL; 1580 } 1581 if(type == REG_SZ || type == REG_MULTI_SZ || type == REG_EXPAND_SZ) { 1582 buf[sizeof(buf)-1] = 0; 1583 buf[sizeof(buf)-2] = 0; /* for multi_sz */ 1584 result = strdup((char*)buf); 1585 if(!result) log_err("out of memory"); 1586 } 1587 return result; 1588 } 1589 1590 void w_config_adjust_directory(struct config_file* cfg) 1591 { 1592 if(cfg->directory && cfg->directory[0]) { 1593 TCHAR dirbuf[2*MAX_PATH+4]; 1594 if(strcmp(cfg->directory, "%EXECUTABLE%") == 0) { 1595 /* get executable path, and if that contains 1596 * directories, snip off the filename part */ 1597 dirbuf[0] = 0; 1598 if(!GetModuleFileName(NULL, dirbuf, MAX_PATH)) 1599 log_err("could not GetModuleFileName"); 1600 if(strrchr(dirbuf, '\\')) { 1601 (strrchr(dirbuf, '\\'))[0] = 0; 1602 } else log_err("GetModuleFileName had no path"); 1603 if(dirbuf[0]) { 1604 /* adjust directory for later lookups to work*/ 1605 free(cfg->directory); 1606 cfg->directory = memdup(dirbuf, strlen(dirbuf)+1); 1607 } 1608 } 1609 } 1610 } 1611 #endif /* UB_ON_WINDOWS */ 1612 1613 void errinf(struct module_qstate* qstate, const char* str) 1614 { 1615 struct config_strlist* p; 1616 if(qstate->env->cfg->val_log_level < 2 || !str) 1617 return; 1618 p = (struct config_strlist*)regional_alloc(qstate->region, sizeof(*p)); 1619 if(!p) { 1620 log_err("malloc failure in validator-error-info string"); 1621 return; 1622 } 1623 p->next = NULL; 1624 p->str = regional_strdup(qstate->region, str); 1625 if(!p->str) { 1626 log_err("malloc failure in validator-error-info string"); 1627 return; 1628 } 1629 /* add at end */ 1630 if(qstate->errinf) { 1631 struct config_strlist* q = qstate->errinf; 1632 while(q->next) 1633 q = q->next; 1634 q->next = p; 1635 } else qstate->errinf = p; 1636 } 1637 1638 void errinf_origin(struct module_qstate* qstate, struct sock_list *origin) 1639 { 1640 struct sock_list* p; 1641 if(qstate->env->cfg->val_log_level < 2) 1642 return; 1643 for(p=origin; p; p=p->next) { 1644 char buf[256]; 1645 if(p == origin) 1646 snprintf(buf, sizeof(buf), "from "); 1647 else snprintf(buf, sizeof(buf), "and "); 1648 if(p->len == 0) 1649 snprintf(buf+strlen(buf), sizeof(buf)-strlen(buf), 1650 "cache"); 1651 else 1652 addr_to_str(&p->addr, p->len, buf+strlen(buf), 1653 sizeof(buf)-strlen(buf)); 1654 errinf(qstate, buf); 1655 } 1656 } 1657 1658 char* errinf_to_str(struct module_qstate* qstate) 1659 { 1660 char buf[20480]; 1661 char* p = buf; 1662 size_t left = sizeof(buf); 1663 struct config_strlist* s; 1664 char dname[LDNS_MAX_DOMAINLEN+1]; 1665 char t[16], c[16]; 1666 sldns_wire2str_type_buf(qstate->qinfo.qtype, t, sizeof(t)); 1667 sldns_wire2str_class_buf(qstate->qinfo.qclass, c, sizeof(c)); 1668 dname_str(qstate->qinfo.qname, dname); 1669 snprintf(p, left, "validation failure <%s %s %s>:", dname, t, c); 1670 left -= strlen(p); p += strlen(p); 1671 if(!qstate->errinf) 1672 snprintf(p, left, " misc failure"); 1673 else for(s=qstate->errinf; s; s=s->next) { 1674 snprintf(p, left, " %s", s->str); 1675 left -= strlen(p); p += strlen(p); 1676 } 1677 p = strdup(buf); 1678 if(!p) 1679 log_err("malloc failure in errinf_to_str"); 1680 return p; 1681 } 1682 1683 void errinf_rrset(struct module_qstate* qstate, struct ub_packed_rrset_key *rr) 1684 { 1685 char buf[1024]; 1686 char dname[LDNS_MAX_DOMAINLEN+1]; 1687 char t[16], c[16]; 1688 if(qstate->env->cfg->val_log_level < 2 || !rr) 1689 return; 1690 sldns_wire2str_type_buf(ntohs(rr->rk.type), t, sizeof(t)); 1691 sldns_wire2str_class_buf(ntohs(rr->rk.rrset_class), c, sizeof(c)); 1692 dname_str(rr->rk.dname, dname); 1693 snprintf(buf, sizeof(buf), "for <%s %s %s>", dname, t, c); 1694 errinf(qstate, buf); 1695 } 1696 1697 void errinf_dname(struct module_qstate* qstate, const char* str, uint8_t* dname) 1698 { 1699 char b[1024]; 1700 char buf[LDNS_MAX_DOMAINLEN+1]; 1701 if(qstate->env->cfg->val_log_level < 2 || !str || !dname) 1702 return; 1703 dname_str(dname, buf); 1704 snprintf(b, sizeof(b), "%s %s", str, buf); 1705 errinf(qstate, b); 1706 } 1707