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