contrib/unbound/util/config_file.c

   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 #include "iterator/iterator.h"
  63 #ifdef HAVE_GLOB_H
  64 # include <glob.h>
  65 #endif
  66 #ifdef CLIENT_SUBNET
  67 #include "edns-subnet/edns-subnet.h"
  68 #endif
  69 #ifdef HAVE_PWD_H
  70 #include <pwd.h>
  71 #endif
  72
  73 /** from cfg username, after daemonize setup performed */
  74 uid_t cfg_uid = (uid_t)-1;
  75 /** from cfg username, after daemonize setup performed */
  76 gid_t cfg_gid = (gid_t)-1;
  77 /** for debug allow small timeout values for fast rollovers */
  78 int autr_permit_small_holddown = 0;
  79 /** size (in bytes) of stream wait buffers max */
  80 size_t stream_wait_max = 4 * 1024 * 1024;
  81
  82 /** global config during parsing */
  83 struct config_parser_state* cfg_parser = 0;
  84
  85 /** init ports possible for use */
  86 static void init_outgoing_availports(int* array, int num);
  87
  88 struct config_file*
  89 config_create(void)
  90 {
  91         struct config_file* cfg;
  92         cfg = (struct config_file*)calloc(1, sizeof(struct config_file));
  93         if(!cfg)
  94                 return NULL;
  95         /* the defaults if no config is present */
  96         cfg->verbosity = 1;
  97         cfg->stat_interval = 0;
  98         cfg->stat_cumulative = 0;
  99         cfg->stat_extended = 0;
 100         cfg->num_threads = 1;
 101         cfg->port = UNBOUND_DNS_PORT;
 102         cfg->do_ip4 = 1;
 103         cfg->do_ip6 = 1;
 104         cfg->do_udp = 1;
 105         cfg->do_tcp = 1;
 106         cfg->tcp_upstream = 0;
 107         cfg->udp_upstream_without_downstream = 0;
 108         cfg->tcp_mss = 0;
 109         cfg->outgoing_tcp_mss = 0;
 110         cfg->tcp_idle_timeout = 30 * 1000; /* 30s in millisecs */
 111         cfg->do_tcp_keepalive = 0;
 112         cfg->tcp_keepalive_timeout = 120 * 1000; /* 120s in millisecs */
 113         cfg->ssl_service_key = NULL;
 114         cfg->ssl_service_pem = NULL;
 115         cfg->ssl_port = UNBOUND_DNS_OVER_TLS_PORT;
 116         cfg->ssl_upstream = 0;
 117         cfg->tls_cert_bundle = NULL;
 118         cfg->tls_win_cert = 0;
 119         cfg->use_syslog = 1;
 120         cfg->log_identity = NULL; /* changed later with argv[0] */
 121         cfg->log_time_ascii = 0;
 122         cfg->log_queries = 0;
 123         cfg->log_replies = 0;
 124         cfg->log_tag_queryreply = 0;
 125         cfg->log_local_actions = 0;
 126         cfg->log_servfail = 0;
 127 #ifndef USE_WINSOCK
 128 #  ifdef USE_MINI_EVENT
 129         /* select max 1024 sockets */
 130         cfg->outgoing_num_ports = 960;
 131         cfg->num_queries_per_thread = 512;
 132 #  else
 133         /* libevent can use many sockets */
 134         cfg->outgoing_num_ports = 4096;
 135         cfg->num_queries_per_thread = 1024;
 136 #  endif
 137         cfg->outgoing_num_tcp = 10;
 138         cfg->incoming_num_tcp = 10;
 139 #else
 140         cfg->outgoing_num_ports = 48; /* windows is limited in num fds */
 141         cfg->num_queries_per_thread = 24;
 142         cfg->outgoing_num_tcp = 2; /* leaves 64-52=12 for: 4if,1stop,thread4 */
 143         cfg->incoming_num_tcp = 2;
 144 #endif
 145         cfg->stream_wait_size = 4 * 1024 * 1024;
 146         cfg->edns_buffer_size = 4096; /* 4k from rfc recommendation */
 147         cfg->msg_buffer_size = 65552; /* 64 k + a small margin */
 148         cfg->msg_cache_size = 4 * 1024 * 1024;
 149         cfg->msg_cache_slabs = 4;
 150         cfg->jostle_time = 200;
 151         cfg->rrset_cache_size = 4 * 1024 * 1024;
 152         cfg->rrset_cache_slabs = 4;
 153         cfg->host_ttl = 900;
 154         cfg->bogus_ttl = 60;
 155         cfg->min_ttl = 0;
 156         cfg->max_ttl = 3600 * 24;
 157         cfg->max_negative_ttl = 3600;
 158         cfg->prefetch = 0;
 159         cfg->prefetch_key = 0;
 160         cfg->deny_any = 0;
 161         cfg->infra_cache_slabs = 4;
 162         cfg->infra_cache_numhosts = 10000;
 163         cfg->infra_cache_min_rtt = 50;
 164         cfg->delay_close = 0;
 165         if(!(cfg->outgoing_avail_ports = (int*)calloc(65536, sizeof(int))))
 166                 goto error_exit;
 167         init_outgoing_availports(cfg->outgoing_avail_ports, 65536);
 168         if(!(cfg->username = strdup(UB_USERNAME))) goto error_exit;
 169 #ifdef HAVE_CHROOT
 170         if(!(cfg->chrootdir = strdup(CHROOT_DIR))) goto error_exit;
 171 #endif
 172         if(!(cfg->directory = strdup(RUN_DIR))) goto error_exit;
 173         if(!(cfg->logfile = strdup(""))) goto error_exit;
 174         if(!(cfg->pidfile = strdup(PIDFILE))) goto error_exit;
 175         if(!(cfg->target_fetch_policy = strdup("3 2 1 0 0"))) goto error_exit;
 176         cfg->fast_server_permil = 0;
 177         cfg->fast_server_num = 3;
 178         cfg->donotqueryaddrs = NULL;
 179         cfg->donotquery_localhost = 1;
 180         cfg->root_hints = NULL;
 181         cfg->use_systemd = 0;
 182         cfg->do_daemonize = 1;
 183         cfg->if_automatic = 0;
 184         cfg->so_rcvbuf = 0;
 185         cfg->so_sndbuf = 0;
 186         cfg->so_reuseport = REUSEPORT_DEFAULT;
 187         cfg->ip_transparent = 0;
 188         cfg->ip_freebind = 0;
 189         cfg->num_ifs = 0;
 190         cfg->ifs = NULL;
 191         cfg->num_out_ifs = 0;
 192         cfg->out_ifs = NULL;
 193         cfg->stubs = NULL;
 194         cfg->forwards = NULL;
 195         cfg->auths = NULL;
 196 #ifdef CLIENT_SUBNET
 197         cfg->client_subnet = NULL;
 198         cfg->client_subnet_zone = NULL;
 199         cfg->client_subnet_opcode = LDNS_EDNS_CLIENT_SUBNET;
 200         cfg->client_subnet_always_forward = 0;
 201         cfg->max_client_subnet_ipv4 = 24;
 202         cfg->max_client_subnet_ipv6 = 56;
 203         cfg->min_client_subnet_ipv4 = 0;
 204         cfg->min_client_subnet_ipv6 = 0;
 205         cfg->max_ecs_tree_size_ipv4 = 100;
 206         cfg->max_ecs_tree_size_ipv6 = 100;
 207 #endif
 208         cfg->views = NULL;
 209         cfg->acls = NULL;
 210         cfg->tcp_connection_limits = NULL;
 211         cfg->harden_short_bufsize = 0;
 212         cfg->harden_large_queries = 0;
 213         cfg->harden_glue = 1;
 214         cfg->harden_dnssec_stripped = 1;
 215         cfg->harden_below_nxdomain = 1;
 216         cfg->harden_referral_path = 0;
 217         cfg->harden_algo_downgrade = 0;
 218         cfg->use_caps_bits_for_id = 0;
 219         cfg->caps_whitelist = NULL;
 220         cfg->private_address = NULL;
 221         cfg->private_domain = NULL;
 222         cfg->unwanted_threshold = 0;
 223         cfg->hide_identity = 0;
 224         cfg->hide_version = 0;
 225         cfg->hide_trustanchor = 0;
 226         cfg->identity = NULL;
 227         cfg->version = NULL;
 228         cfg->auto_trust_anchor_file_list = NULL;
 229         cfg->trust_anchor_file_list = NULL;
 230         cfg->trust_anchor_list = NULL;
 231         cfg->trusted_keys_file_list = NULL;
 232         cfg->trust_anchor_signaling = 1;
 233         cfg->root_key_sentinel = 1;
 234         cfg->dlv_anchor_file = NULL;
 235         cfg->dlv_anchor_list = NULL;
 236         cfg->domain_insecure = NULL;
 237         cfg->val_date_override = 0;
 238         cfg->val_sig_skew_min = 3600; /* at least daylight savings trouble */
 239         cfg->val_sig_skew_max = 86400; /* at most timezone settings trouble */
 240         cfg->val_clean_additional = 1;
 241         cfg->val_log_level = 0;
 242         cfg->val_log_squelch = 0;
 243         cfg->val_permissive_mode = 0;
 244         cfg->aggressive_nsec = 0;
 245         cfg->ignore_cd = 0;
 246         cfg->serve_expired = 0;
 247         cfg->serve_expired_ttl = 0;
 248         cfg->serve_expired_ttl_reset = 0;
 249         cfg->add_holddown = 30*24*3600;
 250         cfg->del_holddown = 30*24*3600;
 251         cfg->keep_missing = 366*24*3600; /* one year plus a little leeway */
 252         cfg->permit_small_holddown = 0;
 253         cfg->key_cache_size = 4 * 1024 * 1024;
 254         cfg->key_cache_slabs = 4;
 255         cfg->neg_cache_size = 1 * 1024 * 1024;
 256         cfg->local_zones = NULL;
 257         cfg->local_zones_nodefault = NULL;
 258 #ifdef USE_IPSET
 259         cfg->local_zones_ipset = NULL;
 260 #endif
 261         cfg->local_zones_disable_default = 0;
 262         cfg->local_data = NULL;
 263         cfg->local_zone_overrides = NULL;
 264         cfg->unblock_lan_zones = 0;
 265         cfg->insecure_lan_zones = 0;
 266         cfg->python_script = NULL;
 267         cfg->remote_control_enable = 0;
 268         cfg->control_ifs.first = NULL;
 269         cfg->control_ifs.last = NULL;
 270         cfg->control_port = UNBOUND_CONTROL_PORT;
 271         cfg->control_use_cert = 1;
 272         cfg->minimal_responses = 1;
 273         cfg->rrset_roundrobin = 0;
 274         cfg->unknown_server_time_limit = 376;
 275         cfg->max_udp_size = 4096;
 276         if(!(cfg->server_key_file = strdup(RUN_DIR"/unbound_server.key")))
 277                 goto error_exit;
 278         if(!(cfg->server_cert_file = strdup(RUN_DIR"/unbound_server.pem")))
 279                 goto error_exit;
 280         if(!(cfg->control_key_file = strdup(RUN_DIR"/unbound_control.key")))
 281                 goto error_exit;
 282         if(!(cfg->control_cert_file = strdup(RUN_DIR"/unbound_control.pem")))
 283                 goto error_exit;
 284
 285 #ifdef CLIENT_SUBNET
 286         if(!(cfg->module_conf = strdup("subnetcache validator iterator"))) goto error_exit;
 287 #else
 288         if(!(cfg->module_conf = strdup("validator iterator"))) goto error_exit;
 289 #endif
 290         if(!(cfg->val_nsec3_key_iterations =
 291                 strdup("1024 150 2048 500 4096 2500"))) goto error_exit;
 292 #if defined(DNSTAP_SOCKET_PATH)
 293         if(!(cfg->dnstap_socket_path = strdup(DNSTAP_SOCKET_PATH)))
 294                 goto error_exit;
 295 #endif
 296         cfg->disable_dnssec_lame_check = 0;
 297         cfg->ip_ratelimit = 0;
 298         cfg->ratelimit = 0;
 299         cfg->ip_ratelimit_slabs = 4;
 300         cfg->ratelimit_slabs = 4;
 301         cfg->ip_ratelimit_size = 4*1024*1024;
 302         cfg->ratelimit_size = 4*1024*1024;
 303         cfg->ratelimit_for_domain = NULL;
 304         cfg->ratelimit_below_domain = NULL;
 305         cfg->ip_ratelimit_factor = 10;
 306         cfg->ratelimit_factor = 10;
 307         cfg->qname_minimisation = 1;
 308         cfg->qname_minimisation_strict = 0;
 309         cfg->shm_enable = 0;
 310         cfg->shm_key = 11777;
 311         cfg->dnscrypt = 0;
 312         cfg->dnscrypt_port = 0;
 313         cfg->dnscrypt_provider = NULL;
 314         cfg->dnscrypt_provider_cert = NULL;
 315         cfg->dnscrypt_provider_cert_rotated = NULL;
 316         cfg->dnscrypt_secret_key = NULL;
 317         cfg->dnscrypt_shared_secret_cache_size = 4*1024*1024;
 318         cfg->dnscrypt_shared_secret_cache_slabs = 4;
 319         cfg->dnscrypt_nonce_cache_size = 4*1024*1024;
 320         cfg->dnscrypt_nonce_cache_slabs = 4;
 321 #ifdef USE_IPSECMOD
 322         cfg->ipsecmod_enabled = 1;
 323         cfg->ipsecmod_ignore_bogus = 0;
 324         cfg->ipsecmod_hook = NULL;
 325         cfg->ipsecmod_max_ttl = 3600;
 326         cfg->ipsecmod_whitelist = NULL;
 327         cfg->ipsecmod_strict = 0;
 328 #endif
 329 #ifdef USE_CACHEDB
 330         cfg->cachedb_backend = NULL;
 331         cfg->cachedb_secret = NULL;
 332 #endif
 333 #ifdef USE_IPSET
 334         cfg->ipset_name_v4 = NULL;
 335         cfg->ipset_name_v6 = NULL;
 336 #endif
 337         return cfg;
 338 error_exit:
 339         config_delete(cfg);
 340         return NULL;
 341 }
 342
 343 struct config_file* config_create_forlib(void)
 344 {
 345         struct config_file* cfg = config_create();
 346         if(!cfg) return NULL;
 347         /* modifications for library use, less verbose, less memory */
 348         free(cfg->chrootdir);
 349         cfg->chrootdir = NULL;
 350         cfg->verbosity = 0;
 351         cfg->outgoing_num_ports = 16; /* in library use, this is 'reasonable'
 352                 and probably within the ulimit(maxfds) of the user */
 353         cfg->outgoing_num_tcp = 2;
 354         cfg->msg_cache_size = 1024*1024;
 355         cfg->msg_cache_slabs = 1;
 356         cfg->rrset_cache_size = 1024*1024;
 357         cfg->rrset_cache_slabs = 1;
 358         cfg->infra_cache_slabs = 1;
 359         cfg->use_syslog = 0;
 360         cfg->key_cache_size = 1024*1024;
 361         cfg->key_cache_slabs = 1;
 362         cfg->neg_cache_size = 100 * 1024;
 363         cfg->donotquery_localhost = 0; /* allow, so that you can ask a
 364                 forward nameserver running on localhost */
 365         cfg->val_log_level = 2; /* to fill why_bogus with */
 366         cfg->val_log_squelch = 1;
 367         cfg->minimal_responses = 0;
 368         return cfg;
 369 }
 370
 371 /** check that the value passed is >= 0 */
 372 #define IS_NUMBER_OR_ZERO \
 373         if(atoi(val) == 0 && strcmp(val, "0") != 0) return 0
 374 /** check that the value passed is > 0 */
 375 #define IS_NONZERO_NUMBER \
 376         if(atoi(val) == 0) return 0
 377 /** check that the value passed is not 0 and a power of 2 */
 378 #define IS_POW2_NUMBER \
 379         if(atoi(val) == 0 || !is_pow2((size_t)atoi(val))) return 0
 380 /** check that the value passed is yes or no */
 381 #define IS_YES_OR_NO \
 382         if(strcmp(val, "yes") != 0 && strcmp(val, "no") != 0) return 0
 383 /** put integer_or_zero into variable */
 384 #define S_NUMBER_OR_ZERO(str, var) if(strcmp(opt, str) == 0) \
 385         { IS_NUMBER_OR_ZERO; cfg->var = atoi(val); }
 386 /** put integer_nonzero into variable */
 387 #define S_NUMBER_NONZERO(str, var) if(strcmp(opt, str) == 0) \
 388         { IS_NONZERO_NUMBER; cfg->var = atoi(val); }
 389 /** put integer_or_zero into unsigned */
 390 #define S_UNSIGNED_OR_ZERO(str, var) if(strcmp(opt, str) == 0) \
 391         { IS_NUMBER_OR_ZERO; cfg->var = (unsigned)atoi(val); }
 392 /** put integer_or_zero into size_t */
 393 #define S_SIZET_OR_ZERO(str, var) if(strcmp(opt, str) == 0) \
 394         { IS_NUMBER_OR_ZERO; cfg->var = (size_t)atoi(val); }
 395 /** put integer_nonzero into size_t */
 396 #define S_SIZET_NONZERO(str, var) if(strcmp(opt, str) == 0) \
 397         { IS_NONZERO_NUMBER; cfg->var = (size_t)atoi(val); }
 398 /** put yesno into variable */
 399 #define S_YNO(str, var) if(strcmp(opt, str) == 0) \
 400         { IS_YES_OR_NO; cfg->var = (strcmp(val, "yes") == 0); }
 401 /** put memsize into variable */
 402 #define S_MEMSIZE(str, var) if(strcmp(opt, str)==0) \
 403         { return cfg_parse_memsize(val, &cfg->var); }
 404 /** put pow2 number into variable */
 405 #define S_POW2(str, var) if(strcmp(opt, str)==0) \
 406         { IS_POW2_NUMBER; cfg->var = (size_t)atoi(val); }
 407 /** put string into variable */
 408 #define S_STR(str, var) if(strcmp(opt, str)==0) \
 409         { free(cfg->var); return (cfg->var = strdup(val)) != NULL; }
 410 /** put string into strlist */
 411 #define S_STRLIST(str, var) if(strcmp(opt, str)==0) \
 412         { return cfg_strlist_insert(&cfg->var, strdup(val)); }
 413 /** put string into strlist if not present yet*/
 414 #define S_STRLIST_UNIQ(str, var) if(strcmp(opt, str)==0) \
 415         { if(cfg_strlist_find(cfg->var, val)) { return 0;} \
 416           return cfg_strlist_insert(&cfg->var, strdup(val)); }
 417 /** append string to strlist */
 418 #define S_STRLIST_APPEND(str, var) if(strcmp(opt, str)==0) \
 419         { return cfg_strlist_append(&cfg->var, strdup(val)); }
 420
 421 int config_set_option(struct config_file* cfg, const char* opt,
 422         const char* val)
 423 {
 424         char buf[64];
 425         if(!opt) return 0;
 426         if(opt[strlen(opt)-1] != ':' && strlen(opt)+2<sizeof(buf)) {
 427                 snprintf(buf, sizeof(buf), "%s:", opt);
 428                 opt = buf;
 429         }
 430         S_NUMBER_OR_ZERO("verbosity:", verbosity)
 431         else if(strcmp(opt, "statistics-interval:") == 0) {
 432                 if(strcmp(val, "0") == 0 || strcmp(val, "") == 0)
 433                         cfg->stat_interval = 0;
 434                 else if(atoi(val) == 0)
 435                         return 0;
 436                 else cfg->stat_interval = atoi(val);
 437         } else if(strcmp(opt, "num_threads:") == 0) {
 438                 /* not supported, library must have 1 thread in bgworker */
 439                 return 0;
 440         } else if(strcmp(opt, "outgoing-port-permit:") == 0) {
 441                 return cfg_mark_ports(val, 1,
 442                         cfg->outgoing_avail_ports, 65536);
 443         } else if(strcmp(opt, "outgoing-port-avoid:") == 0) {
 444                 return cfg_mark_ports(val, 0,
 445                         cfg->outgoing_avail_ports, 65536);
 446         } else if(strcmp(opt, "local-zone:") == 0) {
 447                 return cfg_parse_local_zone(cfg, val);
 448         } else if(strcmp(opt, "val-override-date:") == 0) {
 449                 if(strcmp(val, "") == 0 || strcmp(val, "0") == 0) {
 450                         cfg->val_date_override = 0;
 451                 } else if(strlen(val) == 14) {
 452                         cfg->val_date_override = cfg_convert_timeval(val);
 453                         return cfg->val_date_override != 0;
 454                 } else {
 455                         if(atoi(val) == 0) return 0;
 456                         cfg->val_date_override = (uint32_t)atoi(val);
 457                 }
 458         } else if(strcmp(opt, "local-data-ptr:") == 0) {
 459                 char* ptr = cfg_ptr_reverse((char*)opt);
 460                 return cfg_strlist_insert(&cfg->local_data, ptr);
 461         } else if(strcmp(opt, "logfile:") == 0) {
 462                 cfg->use_syslog = 0;
 463                 free(cfg->logfile);
 464                 return (cfg->logfile = strdup(val)) != NULL;
 465         }
 466         else if(strcmp(opt, "log-time-ascii:") == 0)
 467         { IS_YES_OR_NO; cfg->log_time_ascii = (strcmp(val, "yes") == 0);
 468           log_set_time_asc(cfg->log_time_ascii); }
 469         else S_SIZET_NONZERO("max-udp-size:", max_udp_size)
 470         else S_YNO("use-syslog:", use_syslog)
 471         else S_STR("log-identity:", log_identity)
 472         else S_YNO("extended-statistics:", stat_extended)
 473         else S_YNO("statistics-cumulative:", stat_cumulative)
 474         else S_YNO("shm-enable:", shm_enable)
 475         else S_NUMBER_OR_ZERO("shm-key:", shm_key)
 476         else S_YNO("do-ip4:", do_ip4)
 477         else S_YNO("do-ip6:", do_ip6)
 478         else S_YNO("do-udp:", do_udp)
 479         else S_YNO("do-tcp:", do_tcp)
 480         else S_YNO("tcp-upstream:", tcp_upstream)
 481         else S_YNO("udp-upstream-without-downstream:",
 482                 udp_upstream_without_downstream)
 483         else S_NUMBER_NONZERO("tcp-mss:", tcp_mss)
 484         else S_NUMBER_NONZERO("outgoing-tcp-mss:", outgoing_tcp_mss)
 485         else S_NUMBER_NONZERO("tcp-idle-timeout:", tcp_idle_timeout)
 486         else S_YNO("edns-tcp-keepalive:", do_tcp_keepalive)
 487         else S_NUMBER_NONZERO("edns-tcp-keepalive-timeout:", tcp_keepalive_timeout)
 488         else S_YNO("ssl-upstream:", ssl_upstream)
 489         else S_STR("ssl-service-key:", ssl_service_key)
 490         else S_STR("ssl-service-pem:", ssl_service_pem)
 491         else S_NUMBER_NONZERO("ssl-port:", ssl_port)
 492         else S_STR("tls-cert-bundle:", tls_cert_bundle)
 493         else S_YNO("tls-win-cert:", tls_win_cert)
 494         else S_STRLIST("additional-tls-port:", tls_additional_port)
 495         else S_STRLIST("tls-additional-ports:", tls_additional_port)
 496         else S_STRLIST("tls-additional-port:", tls_additional_port)
 497         else S_STRLIST_APPEND("tls-session-ticket-keys:", tls_session_ticket_keys)
 498         else S_STR("tls-ciphers:", tls_ciphers)
 499         else S_STR("tls-ciphersuites:", tls_ciphersuites)
 500         else S_YNO("interface-automatic:", if_automatic)
 501         else S_YNO("use-systemd:", use_systemd)
 502         else S_YNO("do-daemonize:", do_daemonize)
 503         else S_NUMBER_NONZERO("port:", port)
 504         else S_NUMBER_NONZERO("outgoing-range:", outgoing_num_ports)
 505         else S_SIZET_OR_ZERO("outgoing-num-tcp:", outgoing_num_tcp)
 506         else S_SIZET_OR_ZERO("incoming-num-tcp:", incoming_num_tcp)
 507         else S_MEMSIZE("stream-wait-size:", stream_wait_size)
 508         else S_SIZET_NONZERO("edns-buffer-size:", edns_buffer_size)
 509         else S_SIZET_NONZERO("msg-buffer-size:", msg_buffer_size)
 510         else S_MEMSIZE("msg-cache-size:", msg_cache_size)
 511         else S_POW2("msg-cache-slabs:", msg_cache_slabs)
 512         else S_SIZET_NONZERO("num-queries-per-thread:",num_queries_per_thread)
 513         else S_SIZET_OR_ZERO("jostle-timeout:", jostle_time)
 514         else S_MEMSIZE("so-rcvbuf:", so_rcvbuf)
 515         else S_MEMSIZE("so-sndbuf:", so_sndbuf)
 516         else S_YNO("so-reuseport:", so_reuseport)
 517         else S_YNO("ip-transparent:", ip_transparent)
 518         else S_YNO("ip-freebind:", ip_freebind)
 519         else S_MEMSIZE("rrset-cache-size:", rrset_cache_size)
 520         else S_POW2("rrset-cache-slabs:", rrset_cache_slabs)
 521         else S_YNO("prefetch:", prefetch)
 522         else S_YNO("prefetch-key:", prefetch_key)
 523         else S_YNO("deny-any:", deny_any)
 524         else if(strcmp(opt, "cache-max-ttl:") == 0)
 525         { IS_NUMBER_OR_ZERO; cfg->max_ttl = atoi(val); MAX_TTL=(time_t)cfg->max_ttl;}
 526         else if(strcmp(opt, "cache-max-negative-ttl:") == 0)
 527         { IS_NUMBER_OR_ZERO; cfg->max_negative_ttl = atoi(val); MAX_NEG_TTL=(time_t)cfg->max_negative_ttl;}
 528         else if(strcmp(opt, "cache-min-ttl:") == 0)
 529         { IS_NUMBER_OR_ZERO; cfg->min_ttl = atoi(val); MIN_TTL=(time_t)cfg->min_ttl;}
 530         else if(strcmp(opt, "infra-cache-min-rtt:") == 0) {
 531             IS_NUMBER_OR_ZERO; cfg->infra_cache_min_rtt = atoi(val);
 532             RTT_MIN_TIMEOUT=cfg->infra_cache_min_rtt;
 533         }
 534         else S_NUMBER_OR_ZERO("infra-host-ttl:", host_ttl)
 535         else S_POW2("infra-cache-slabs:", infra_cache_slabs)
 536         else S_SIZET_NONZERO("infra-cache-numhosts:", infra_cache_numhosts)
 537         else S_NUMBER_OR_ZERO("delay-close:", delay_close)
 538         else S_STR("chroot:", chrootdir)
 539         else S_STR("username:", username)
 540         else S_STR("directory:", directory)
 541         else S_STR("pidfile:", pidfile)
 542         else S_YNO("hide-identity:", hide_identity)
 543         else S_YNO("hide-version:", hide_version)
 544         else S_YNO("hide-trustanchor:", hide_trustanchor)
 545         else S_STR("identity:", identity)
 546         else S_STR("version:", version)
 547         else S_STRLIST("root-hints:", root_hints)
 548         else S_STR("target-fetch-policy:", target_fetch_policy)
 549         else S_YNO("harden-glue:", harden_glue)
 550         else S_YNO("harden-short-bufsize:", harden_short_bufsize)
 551         else S_YNO("harden-large-queries:", harden_large_queries)
 552         else S_YNO("harden-dnssec-stripped:", harden_dnssec_stripped)
 553         else S_YNO("harden-below-nxdomain:", harden_below_nxdomain)
 554         else S_YNO("harden-referral-path:", harden_referral_path)
 555         else S_YNO("harden-algo-downgrade:", harden_algo_downgrade)
 556         else S_YNO("use-caps-for-id:", use_caps_bits_for_id)
 557         else S_STRLIST("caps-whitelist:", caps_whitelist)
 558         else S_SIZET_OR_ZERO("unwanted-reply-threshold:", unwanted_threshold)
 559         else S_STRLIST("private-address:", private_address)
 560         else S_STRLIST("private-domain:", private_domain)
 561         else S_YNO("do-not-query-localhost:", donotquery_localhost)
 562         else S_STRLIST("do-not-query-address:", donotqueryaddrs)
 563         else S_STRLIST("auto-trust-anchor-file:", auto_trust_anchor_file_list)
 564         else S_STRLIST("trust-anchor-file:", trust_anchor_file_list)
 565         else S_STRLIST("trust-anchor:", trust_anchor_list)
 566         else S_STRLIST("trusted-keys-file:", trusted_keys_file_list)
 567         else S_YNO("trust-anchor-signaling:", trust_anchor_signaling)
 568         else S_YNO("root-key-sentinel:", root_key_sentinel)
 569         else S_STR("dlv-anchor-file:", dlv_anchor_file)
 570         else S_STRLIST("dlv-anchor:", dlv_anchor_list)
 571         else S_STRLIST("domain-insecure:", domain_insecure)
 572         else S_NUMBER_OR_ZERO("val-bogus-ttl:", bogus_ttl)
 573         else S_YNO("val-clean-additional:", val_clean_additional)
 574         else S_NUMBER_OR_ZERO("val-log-level:", val_log_level)
 575         else S_YNO("val-log-squelch:", val_log_squelch)
 576         else S_YNO("log-queries:", log_queries)
 577         else S_YNO("log-replies:", log_replies)
 578         else S_YNO("log-tag-queryreply:", log_tag_queryreply)
 579         else S_YNO("log-local-actions:", log_local_actions)
 580         else S_YNO("log-servfail:", log_servfail)
 581         else S_YNO("val-permissive-mode:", val_permissive_mode)
 582         else S_YNO("aggressive-nsec:", aggressive_nsec)
 583         else S_YNO("ignore-cd-flag:", ignore_cd)
 584         else S_YNO("serve-expired:", serve_expired)
 585         else if(strcmp(opt, "serve_expired_ttl:") == 0)
 586         { IS_NUMBER_OR_ZERO; cfg->serve_expired_ttl = atoi(val); SERVE_EXPIRED_TTL=(time_t)cfg->serve_expired_ttl;}
 587         else S_YNO("serve-expired-ttl-reset:", serve_expired_ttl_reset)
 588         else S_STR("val-nsec3-keysize-iterations:", val_nsec3_key_iterations)
 589         else S_UNSIGNED_OR_ZERO("add-holddown:", add_holddown)
 590         else S_UNSIGNED_OR_ZERO("del-holddown:", del_holddown)
 591         else S_UNSIGNED_OR_ZERO("keep-missing:", keep_missing)
 592         else if(strcmp(opt, "permit-small-holddown:") == 0)
 593         { IS_YES_OR_NO; cfg->permit_small_holddown = (strcmp(val, "yes") == 0);
 594           autr_permit_small_holddown = cfg->permit_small_holddown; }
 595         else S_MEMSIZE("key-cache-size:", key_cache_size)
 596         else S_POW2("key-cache-slabs:", key_cache_slabs)
 597         else S_MEMSIZE("neg-cache-size:", neg_cache_size)
 598         else S_YNO("minimal-responses:", minimal_responses)
 599         else S_YNO("rrset-roundrobin:", rrset_roundrobin)
 600         else S_NUMBER_OR_ZERO("unknown-server-time-limit:", unknown_server_time_limit)
 601         else S_STRLIST("local-data:", local_data)
 602         else S_YNO("unblock-lan-zones:", unblock_lan_zones)
 603         else S_YNO("insecure-lan-zones:", insecure_lan_zones)
 604         else S_YNO("control-enable:", remote_control_enable)
 605         else S_STRLIST_APPEND("control-interface:", control_ifs)
 606         else S_NUMBER_NONZERO("control-port:", control_port)
 607         else S_STR("server-key-file:", server_key_file)
 608         else S_STR("server-cert-file:", server_cert_file)
 609         else S_STR("control-key-file:", control_key_file)
 610         else S_STR("control-cert-file:", control_cert_file)
 611         else S_STR("module-config:", module_conf)
 612         else S_STRLIST("python-script:", python_script)
 613         else S_YNO("disable-dnssec-lame-check:", disable_dnssec_lame_check)
 614 #ifdef CLIENT_SUBNET
 615         /* Can't set max subnet prefix here, since that value is used when
 616          * generating the address tree. */
 617         /* No client-subnet-always-forward here, module registration depends on
 618          * this option. */
 619 #endif
 620 #ifdef USE_DNSTAP
 621         else S_YNO("dnstap-enable:", dnstap)
 622         else S_STR("dnstap-socket-path:", dnstap_socket_path)
 623         else S_YNO("dnstap-send-identity:", dnstap_send_identity)
 624         else S_YNO("dnstap-send-version:", dnstap_send_version)
 625         else S_STR("dnstap-identity:", dnstap_identity)
 626         else S_STR("dnstap-version:", dnstap_version)
 627         else S_YNO("dnstap-log-resolver-query-messages:",
 628                 dnstap_log_resolver_query_messages)
 629         else S_YNO("dnstap-log-resolver-response-messages:",
 630                 dnstap_log_resolver_response_messages)
 631         else S_YNO("dnstap-log-client-query-messages:",
 632                 dnstap_log_client_query_messages)
 633         else S_YNO("dnstap-log-client-response-messages:",
 634                 dnstap_log_client_response_messages)
 635         else S_YNO("dnstap-log-forwarder-query-messages:",
 636                 dnstap_log_forwarder_query_messages)
 637         else S_YNO("dnstap-log-forwarder-response-messages:",
 638                 dnstap_log_forwarder_response_messages)
 639 #endif
 640 #ifdef USE_DNSCRYPT
 641         else S_YNO("dnscrypt-enable:", dnscrypt)
 642         else S_NUMBER_NONZERO("dnscrypt-port:", dnscrypt_port)
 643         else S_STR("dnscrypt-provider:", dnscrypt_provider)
 644         else S_STRLIST_UNIQ("dnscrypt-provider-cert:", dnscrypt_provider_cert)
 645         else S_STRLIST("dnscrypt-provider-cert-rotated:", dnscrypt_provider_cert_rotated)
 646         else S_STRLIST_UNIQ("dnscrypt-secret-key:", dnscrypt_secret_key)
 647         else S_MEMSIZE("dnscrypt-shared-secret-cache-size:",
 648                 dnscrypt_shared_secret_cache_size)
 649         else S_POW2("dnscrypt-shared-secret-cache-slabs:",
 650                 dnscrypt_shared_secret_cache_slabs)
 651         else S_MEMSIZE("dnscrypt-nonce-cache-size:",
 652                 dnscrypt_nonce_cache_size)
 653         else S_POW2("dnscrypt-nonce-cache-slabs:",
 654                 dnscrypt_nonce_cache_slabs)
 655 #endif
 656         else if(strcmp(opt, "ip-ratelimit:") == 0) {
 657             IS_NUMBER_OR_ZERO; cfg->ip_ratelimit = atoi(val);
 658             infra_ip_ratelimit=cfg->ip_ratelimit;
 659         }
 660         else if(strcmp(opt, "ratelimit:") == 0) {
 661             IS_NUMBER_OR_ZERO; cfg->ratelimit = atoi(val);
 662             infra_dp_ratelimit=cfg->ratelimit;
 663         }
 664         else S_MEMSIZE("ip-ratelimit-size:", ip_ratelimit_size)
 665         else S_MEMSIZE("ratelimit-size:", ratelimit_size)
 666         else S_POW2("ip-ratelimit-slabs:", ip_ratelimit_slabs)
 667         else S_POW2("ratelimit-slabs:", ratelimit_slabs)
 668         else S_NUMBER_OR_ZERO("ip-ratelimit-factor:", ip_ratelimit_factor)
 669         else S_NUMBER_OR_ZERO("ratelimit-factor:", ratelimit_factor)
 670         else S_SIZET_NONZERO("fast-server-num:", fast_server_num)
 671         else S_NUMBER_OR_ZERO("fast-server-permil:", fast_server_permil)
 672         else S_YNO("qname-minimisation:", qname_minimisation)
 673         else S_YNO("qname-minimisation-strict:", qname_minimisation_strict)
 674 #ifdef USE_IPSECMOD
 675         else S_YNO("ipsecmod-enabled:", ipsecmod_enabled)
 676         else S_YNO("ipsecmod-ignore-bogus:", ipsecmod_ignore_bogus)
 677         else if(strcmp(opt, "ipsecmod-max-ttl:") == 0)
 678         { IS_NUMBER_OR_ZERO; cfg->ipsecmod_max_ttl = atoi(val); }
 679         else S_YNO("ipsecmod-strict:", ipsecmod_strict)
 680 #endif
 681         else if(strcmp(opt, "define-tag:") ==0) {
 682                 return config_add_tag(cfg, val);
 683         /* val_sig_skew_min and max are copied into val_env during init,
 684          * so this does not update val_env with set_option */
 685         } else if(strcmp(opt, "val-sig-skew-min:") == 0)
 686         { IS_NUMBER_OR_ZERO; cfg->val_sig_skew_min = (int32_t)atoi(val); }
 687         else if(strcmp(opt, "val-sig-skew-max:") == 0)
 688         { IS_NUMBER_OR_ZERO; cfg->val_sig_skew_max = (int32_t)atoi(val); }
 689         else if (strcmp(opt, "outgoing-interface:") == 0) {
 690                 char* d = strdup(val);
 691                 char** oi =
 692                 (char**)reallocarray(NULL, (size_t)cfg->num_out_ifs+1, sizeof(char*));
 693                 if(!d || !oi) { free(d); free(oi); return -1; }
 694                 if(cfg->out_ifs && cfg->num_out_ifs) {
 695                         memmove(oi, cfg->out_ifs, cfg->num_out_ifs*sizeof(char*));
 696                         free(cfg->out_ifs);
 697                 }
 698                 oi[cfg->num_out_ifs++] = d;
 699                 cfg->out_ifs = oi;
 700         } else {
 701                 /* unknown or unsupported (from the set_option interface):
 702                  * interface, outgoing-interface, access-control,
 703                  * stub-zone, name, stub-addr, stub-host, stub-prime
 704                  * forward-first, stub-first, forward-ssl-upstream,
 705                  * stub-ssl-upstream, forward-zone, auth-zone
 706                  * name, forward-addr, forward-host,
 707                  * ratelimit-for-domain, ratelimit-below-domain,
 708                  * local-zone-tag, access-control-view,
 709                  * send-client-subnet, client-subnet-always-forward,
 710                  * max-client-subnet-ipv4, max-client-subnet-ipv6,
 711                  * min-client-subnet-ipv4, min-client-subnet-ipv6,
 712                  * max-ecs-tree-size-ipv4, max-ecs-tree-size-ipv6, ipsecmod_hook,
 713                  * ipsecmod_whitelist. */
 714                 return 0;
 715         }
 716         return 1;
 717 }
 718
 719 void config_print_func(char* line, void* arg)
 720 {
 721         FILE* f = (FILE*)arg;
 722         (void)fprintf(f, "%s\n", line);
 723 }
 724
 725 /** collate func arg */
 726 struct config_collate_arg {
 727         /** list of result items */
 728         struct config_strlist_head list;
 729         /** if a malloc error occurred, 0 is OK */
 730         int status;
 731 };
 732
 733 void config_collate_func(char* line, void* arg)
 734 {
 735         struct config_collate_arg* m = (struct config_collate_arg*)arg;
 736         if(m->status)
 737                 return;
 738         if(!cfg_strlist_append(&m->list, strdup(line)))
 739                 m->status = 1;
 740 }
 741
 742 int config_get_option_list(struct config_file* cfg, const char* opt,
 743         struct config_strlist** list)
 744 {
 745         struct config_collate_arg m;
 746         memset(&m, 0, sizeof(m));
 747         *list = NULL;
 748         if(!config_get_option(cfg, opt, config_collate_func, &m))
 749                 return 1;
 750         if(m.status) {
 751                 config_delstrlist(m.list.first);
 752                 return 2;
 753         }
 754         *list = m.list.first;
 755         return 0;
 756 }
 757
 758 int
 759 config_get_option_collate(struct config_file* cfg, const char* opt, char** str)
 760 {
 761         struct config_strlist* list = NULL;
 762         int r;
 763         *str = NULL;
 764         if((r = config_get_option_list(cfg, opt, &list)) != 0)
 765                 return r;
 766         *str = config_collate_cat(list);
 767         config_delstrlist(list);
 768         if(!*str) return 2;
 769         return 0;
 770 }
 771
 772 char*
 773 config_collate_cat(struct config_strlist* list)
 774 {
 775         size_t total = 0, left;
 776         struct config_strlist* s;
 777         char *r, *w;
 778         if(!list) /* no elements */
 779                 return strdup("");
 780         if(list->next == NULL) /* one element , no newline at end. */
 781                 return strdup(list->str);
 782         /* count total length */
 783         for(s=list; s; s=s->next)
 784                 total += strlen(s->str) + 1; /* len + newline */
 785         left = total+1; /* one extra for nul at end */
 786         r = malloc(left);
 787         if(!r)
 788                 return NULL;
 789         w = r;
 790         for(s=list; s; s=s->next) {
 791                 size_t this = strlen(s->str);
 792                 if(this+2 > left) { /* sanity check */
 793                         free(r);
 794                         return NULL;
 795                 }
 796                 snprintf(w, left, "%s\n", s->str);
 797                 this = strlen(w);
 798                 w += this;
 799                 left -= this;
 800         }
 801         return r;
 802 }
 803
 804 /** compare and print decimal option */
 805 #define O_DEC(opt, str, var) if(strcmp(opt, str)==0) \
 806         {snprintf(buf, len, "%d", (int)cfg->var); \
 807         func(buf, arg);}
 808 /** compare and print unsigned option */
 809 #define O_UNS(opt, str, var) if(strcmp(opt, str)==0) \
 810         {snprintf(buf, len, "%u", (unsigned)cfg->var); \
 811         func(buf, arg);}
 812 /** compare and print yesno option */
 813 #define O_YNO(opt, str, var) if(strcmp(opt, str)==0) \
 814         {func(cfg->var?"yes":"no", arg);}
 815 /** compare and print string option */
 816 #define O_STR(opt, str, var) if(strcmp(opt, str)==0) \
 817         {func(cfg->var?cfg->var:"", arg);}
 818 /** compare and print array option */
 819 #define O_IFC(opt, str, num, arr) if(strcmp(opt, str)==0) \
 820         {int i; for(i=0; i<cfg->num; i++) func(cfg->arr[i], arg);}
 821 /** compare and print memorysize option */
 822 #define O_MEM(opt, str, var) if(strcmp(opt, str)==0) { \
 823         if(cfg->var > 1024*1024*1024) { \
 824           size_t f=cfg->var/(size_t)1000000, b=cfg->var%(size_t)1000000; \
 825           snprintf(buf, len, "%u%6.6u", (unsigned)f, (unsigned)b); \
 826         } else snprintf(buf, len, "%u", (unsigned)cfg->var); \
 827         func(buf, arg);}
 828 /** compare and print list option */
 829 #define O_LST(opt, name, lst) if(strcmp(opt, name)==0) { \
 830         struct config_strlist* p = cfg->lst; \
 831         for(p = cfg->lst; p; p = p->next) \
 832                 func(p->str, arg); \
 833         }
 834 /** compare and print list option */
 835 #define O_LS2(opt, name, lst) if(strcmp(opt, name)==0) { \
 836         struct config_str2list* p = cfg->lst; \
 837         for(p = cfg->lst; p; p = p->next) { \
 838                 snprintf(buf, len, "%s %s", p->str, p->str2); \
 839                 func(buf, arg); \
 840         } \
 841         }
 842 /** compare and print list option */
 843 #define O_LS3(opt, name, lst) if(strcmp(opt, name)==0) { \
 844         struct config_str3list* p = cfg->lst; \
 845         for(p = cfg->lst; p; p = p->next) { \
 846                 snprintf(buf, len, "%s %s %s", p->str, p->str2, p->str3); \
 847                 func(buf, arg); \
 848         } \
 849         }
 850 /** compare and print taglist option */
 851 #define O_LTG(opt, name, lst) if(strcmp(opt, name)==0) { \
 852         char* tmpstr = NULL; \
 853         struct config_strbytelist *p = cfg->lst; \
 854         for(p = cfg->lst; p; p = p->next) {\
 855                 tmpstr = config_taglist2str(cfg, p->str2, p->str2len); \
 856                 if(tmpstr) {\
 857                         snprintf(buf, len, "%s %s", p->str, tmpstr); \
 858                         func(buf, arg); \
 859                         free(tmpstr); \
 860                 } \
 861         } \
 862         }
 863
 864 int
 865 config_get_option(struct config_file* cfg, const char* opt,
 866         void (*func)(char*,void*), void* arg)
 867 {
 868         char buf[1024], nopt[64];
 869         size_t len = sizeof(buf);
 870         if(!opt) return 0;
 871         if(opt && opt[strlen(opt)-1] == ':' && strlen(opt)<sizeof(nopt)) {
 872                 memmove(nopt, opt, strlen(opt));
 873                 nopt[strlen(opt)-1] = 0;
 874                 opt = nopt;
 875         }
 876         fptr_ok(fptr_whitelist_print_func(func));
 877         O_DEC(opt, "verbosity", verbosity)
 878         else O_DEC(opt, "statistics-interval", stat_interval)
 879         else O_YNO(opt, "statistics-cumulative", stat_cumulative)
 880         else O_YNO(opt, "extended-statistics", stat_extended)
 881         else O_YNO(opt, "shm-enable", shm_enable)
 882         else O_DEC(opt, "shm-key", shm_key)
 883         else O_YNO(opt, "use-syslog", use_syslog)
 884         else O_STR(opt, "log-identity", log_identity)
 885         else O_YNO(opt, "log-time-ascii", log_time_ascii)
 886         else O_DEC(opt, "num-threads", num_threads)
 887         else O_IFC(opt, "interface", num_ifs, ifs)
 888         else O_IFC(opt, "outgoing-interface", num_out_ifs, out_ifs)
 889         else O_YNO(opt, "interface-automatic", if_automatic)
 890         else O_DEC(opt, "port", port)
 891         else O_DEC(opt, "outgoing-range", outgoing_num_ports)
 892         else O_DEC(opt, "outgoing-num-tcp", outgoing_num_tcp)
 893         else O_DEC(opt, "incoming-num-tcp", incoming_num_tcp)
 894         else O_MEM(opt, "stream-wait-size", stream_wait_size)
 895         else O_DEC(opt, "edns-buffer-size", edns_buffer_size)
 896         else O_DEC(opt, "msg-buffer-size", msg_buffer_size)
 897         else O_MEM(opt, "msg-cache-size", msg_cache_size)
 898         else O_DEC(opt, "msg-cache-slabs", msg_cache_slabs)
 899         else O_DEC(opt, "num-queries-per-thread", num_queries_per_thread)
 900         else O_UNS(opt, "jostle-timeout", jostle_time)
 901         else O_MEM(opt, "so-rcvbuf", so_rcvbuf)
 902         else O_MEM(opt, "so-sndbuf", so_sndbuf)
 903         else O_YNO(opt, "so-reuseport", so_reuseport)
 904         else O_YNO(opt, "ip-transparent", ip_transparent)
 905         else O_YNO(opt, "ip-freebind", ip_freebind)
 906         else O_MEM(opt, "rrset-cache-size", rrset_cache_size)
 907         else O_DEC(opt, "rrset-cache-slabs", rrset_cache_slabs)
 908         else O_YNO(opt, "prefetch-key", prefetch_key)
 909         else O_YNO(opt, "prefetch", prefetch)
 910         else O_YNO(opt, "deny-any", deny_any)
 911         else O_DEC(opt, "cache-max-ttl", max_ttl)
 912         else O_DEC(opt, "cache-max-negative-ttl", max_negative_ttl)
 913         else O_DEC(opt, "cache-min-ttl", min_ttl)
 914         else O_DEC(opt, "infra-host-ttl", host_ttl)
 915         else O_DEC(opt, "infra-cache-slabs", infra_cache_slabs)
 916         else O_DEC(opt, "infra-cache-min-rtt", infra_cache_min_rtt)
 917         else O_MEM(opt, "infra-cache-numhosts", infra_cache_numhosts)
 918         else O_UNS(opt, "delay-close", delay_close)
 919         else O_YNO(opt, "do-ip4", do_ip4)
 920         else O_YNO(opt, "do-ip6", do_ip6)
 921         else O_YNO(opt, "do-udp", do_udp)
 922         else O_YNO(opt, "do-tcp", do_tcp)
 923         else O_YNO(opt, "tcp-upstream", tcp_upstream)
 924         else O_YNO(opt, "udp-upstream-without-downstream", udp_upstream_without_downstream)
 925         else O_DEC(opt, "tcp-mss", tcp_mss)
 926         else O_DEC(opt, "outgoing-tcp-mss", outgoing_tcp_mss)
 927         else O_DEC(opt, "tcp-idle-timeout", tcp_idle_timeout)
 928         else O_YNO(opt, "edns-tcp-keepalive", do_tcp_keepalive)
 929         else O_DEC(opt, "edns-tcp-keepalive-timeout", tcp_keepalive_timeout)
 930         else O_YNO(opt, "ssl-upstream", ssl_upstream)
 931         else O_STR(opt, "ssl-service-key", ssl_service_key)
 932         else O_STR(opt, "ssl-service-pem", ssl_service_pem)
 933         else O_DEC(opt, "ssl-port", ssl_port)
 934         else O_STR(opt, "tls-cert-bundle", tls_cert_bundle)
 935         else O_YNO(opt, "tls-win-cert", tls_win_cert)
 936         else O_LST(opt, "tls-additional-port", tls_additional_port)
 937         else O_LST(opt, "tls-session-ticket-keys", tls_session_ticket_keys.first)
 938         else O_STR(opt, "tls-ciphers", tls_ciphers)
 939         else O_STR(opt, "tls-ciphersuites", tls_ciphersuites)
 940         else O_YNO(opt, "use-systemd", use_systemd)
 941         else O_YNO(opt, "do-daemonize", do_daemonize)
 942         else O_STR(opt, "chroot", chrootdir)
 943         else O_STR(opt, "username", username)
 944         else O_STR(opt, "directory", directory)
 945         else O_STR(opt, "logfile", logfile)
 946         else O_YNO(opt, "log-queries", log_queries)
 947         else O_YNO(opt, "log-replies", log_replies)
 948         else O_YNO(opt, "log-tag-queryreply", log_tag_queryreply)
 949         else O_YNO(opt, "log-local-actions", log_local_actions)
 950         else O_YNO(opt, "log-servfail", log_servfail)
 951         else O_STR(opt, "pidfile", pidfile)
 952         else O_YNO(opt, "hide-identity", hide_identity)
 953         else O_YNO(opt, "hide-version", hide_version)
 954         else O_YNO(opt, "hide-trustanchor", hide_trustanchor)
 955         else O_STR(opt, "identity", identity)
 956         else O_STR(opt, "version", version)
 957         else O_STR(opt, "target-fetch-policy", target_fetch_policy)
 958         else O_YNO(opt, "harden-short-bufsize", harden_short_bufsize)
 959         else O_YNO(opt, "harden-large-queries", harden_large_queries)
 960         else O_YNO(opt, "harden-glue", harden_glue)
 961         else O_YNO(opt, "harden-dnssec-stripped", harden_dnssec_stripped)
 962         else O_YNO(opt, "harden-below-nxdomain", harden_below_nxdomain)
 963         else O_YNO(opt, "harden-referral-path", harden_referral_path)
 964         else O_YNO(opt, "harden-algo-downgrade", harden_algo_downgrade)
 965         else O_YNO(opt, "use-caps-for-id", use_caps_bits_for_id)
 966         else O_LST(opt, "caps-whitelist", caps_whitelist)
 967         else O_DEC(opt, "unwanted-reply-threshold", unwanted_threshold)
 968         else O_YNO(opt, "do-not-query-localhost", donotquery_localhost)
 969         else O_STR(opt, "module-config", module_conf)
 970         else O_STR(opt, "dlv-anchor-file", dlv_anchor_file)
 971         else O_DEC(opt, "val-bogus-ttl", bogus_ttl)
 972         else O_YNO(opt, "val-clean-additional", val_clean_additional)
 973         else O_DEC(opt, "val-log-level", val_log_level)
 974         else O_YNO(opt, "val-permissive-mode", val_permissive_mode)
 975         else O_YNO(opt, "aggressive-nsec", aggressive_nsec)
 976         else O_YNO(opt, "ignore-cd-flag", ignore_cd)
 977         else O_YNO(opt, "serve-expired", serve_expired)
 978         else O_DEC(opt, "serve-expired-ttl", serve_expired_ttl)
 979         else O_YNO(opt, "serve-expired-ttl-reset", serve_expired_ttl_reset)
 980         else O_STR(opt, "val-nsec3-keysize-iterations",val_nsec3_key_iterations)
 981         else O_UNS(opt, "add-holddown", add_holddown)
 982         else O_UNS(opt, "del-holddown", del_holddown)
 983         else O_UNS(opt, "keep-missing", keep_missing)
 984         else O_YNO(opt, "permit-small-holddown", permit_small_holddown)
 985         else O_MEM(opt, "key-cache-size", key_cache_size)
 986         else O_DEC(opt, "key-cache-slabs", key_cache_slabs)
 987         else O_MEM(opt, "neg-cache-size", neg_cache_size)
 988         else O_YNO(opt, "control-enable", remote_control_enable)
 989         else O_DEC(opt, "control-port", control_port)
 990         else O_STR(opt, "server-key-file", server_key_file)
 991         else O_STR(opt, "server-cert-file", server_cert_file)
 992         else O_STR(opt, "control-key-file", control_key_file)
 993         else O_STR(opt, "control-cert-file", control_cert_file)
 994         else O_LST(opt, "root-hints", root_hints)
 995         else O_LS2(opt, "access-control", acls)
 996         else O_LS2(opt, "tcp-connection-limit", tcp_connection_limits)
 997         else O_LST(opt, "do-not-query-address", donotqueryaddrs)
 998         else O_LST(opt, "private-address", private_address)
 999         else O_LST(opt, "private-domain", private_domain)
1000         else O_LST(opt, "auto-trust-anchor-file", auto_trust_anchor_file_list)
1001         else O_LST(opt, "trust-anchor-file", trust_anchor_file_list)
1002         else O_LST(opt, "trust-anchor", trust_anchor_list)
1003         else O_LST(opt, "trusted-keys-file", trusted_keys_file_list)
1004         else O_YNO(opt, "trust-anchor-signaling", trust_anchor_signaling)
1005         else O_YNO(opt, "root-key-sentinel", root_key_sentinel)
1006         else O_LST(opt, "dlv-anchor", dlv_anchor_list)
1007         else O_LST(opt, "control-interface", control_ifs.first)
1008         else O_LST(opt, "domain-insecure", domain_insecure)
1009         else O_UNS(opt, "val-override-date", val_date_override)
1010         else O_YNO(opt, "minimal-responses", minimal_responses)
1011         else O_YNO(opt, "rrset-roundrobin", rrset_roundrobin)
1012         else O_DEC(opt, "unknown-server-time-limit", unknown_server_time_limit)
1013 #ifdef CLIENT_SUBNET
1014         else O_LST(opt, "send-client-subnet", client_subnet)
1015         else O_LST(opt, "client-subnet-zone", client_subnet_zone)
1016         else O_DEC(opt, "max-client-subnet-ipv4", max_client_subnet_ipv4)
1017         else O_DEC(opt, "max-client-subnet-ipv6", max_client_subnet_ipv6)
1018         else O_DEC(opt, "min-client-subnet-ipv4", min_client_subnet_ipv4)
1019         else O_DEC(opt, "min-client-subnet-ipv6", min_client_subnet_ipv6)
1020         else O_DEC(opt, "max-ecs-tree-size-ipv4", max_ecs_tree_size_ipv4)
1021         else O_DEC(opt, "max-ecs-tree-size-ipv6", max_ecs_tree_size_ipv6)
1022         else O_YNO(opt, "client-subnet-always-forward:",
1023                 client_subnet_always_forward)
1024 #endif
1025 #ifdef USE_DNSTAP
1026         else O_YNO(opt, "dnstap-enable", dnstap)
1027         else O_STR(opt, "dnstap-socket-path", dnstap_socket_path)
1028         else O_YNO(opt, "dnstap-send-identity", dnstap_send_identity)
1029         else O_YNO(opt, "dnstap-send-version", dnstap_send_version)
1030         else O_STR(opt, "dnstap-identity", dnstap_identity)
1031         else O_STR(opt, "dnstap-version", dnstap_version)
1032         else O_YNO(opt, "dnstap-log-resolver-query-messages",
1033                 dnstap_log_resolver_query_messages)
1034         else O_YNO(opt, "dnstap-log-resolver-response-messages",
1035                 dnstap_log_resolver_response_messages)
1036         else O_YNO(opt, "dnstap-log-client-query-messages",
1037                 dnstap_log_client_query_messages)
1038         else O_YNO(opt, "dnstap-log-client-response-messages",
1039                 dnstap_log_client_response_messages)
1040         else O_YNO(opt, "dnstap-log-forwarder-query-messages",
1041                 dnstap_log_forwarder_query_messages)
1042         else O_YNO(opt, "dnstap-log-forwarder-response-messages",
1043                 dnstap_log_forwarder_response_messages)
1044 #endif
1045 #ifdef USE_DNSCRYPT
1046         else O_YNO(opt, "dnscrypt-enable", dnscrypt)
1047         else O_DEC(opt, "dnscrypt-port", dnscrypt_port)
1048         else O_STR(opt, "dnscrypt-provider", dnscrypt_provider)
1049         else O_LST(opt, "dnscrypt-provider-cert", dnscrypt_provider_cert)
1050         else O_LST(opt, "dnscrypt-provider-cert-rotated", dnscrypt_provider_cert_rotated)
1051         else O_LST(opt, "dnscrypt-secret-key", dnscrypt_secret_key)
1052         else O_MEM(opt, "dnscrypt-shared-secret-cache-size",
1053                 dnscrypt_shared_secret_cache_size)
1054         else O_DEC(opt, "dnscrypt-shared-secret-cache-slabs",
1055                 dnscrypt_shared_secret_cache_slabs)
1056         else O_MEM(opt, "dnscrypt-nonce-cache-size",
1057                 dnscrypt_nonce_cache_size)
1058         else O_DEC(opt, "dnscrypt-nonce-cache-slabs",
1059                 dnscrypt_nonce_cache_slabs)
1060 #endif
1061         else O_YNO(opt, "unblock-lan-zones", unblock_lan_zones)
1062         else O_YNO(opt, "insecure-lan-zones", insecure_lan_zones)
1063         else O_DEC(opt, "max-udp-size", max_udp_size)
1064         else O_LST(opt, "python-script", python_script)
1065         else O_YNO(opt, "disable-dnssec-lame-check", disable_dnssec_lame_check)
1066         else O_DEC(opt, "ip-ratelimit", ip_ratelimit)
1067         else O_DEC(opt, "ratelimit", ratelimit)
1068         else O_MEM(opt, "ip-ratelimit-size", ip_ratelimit_size)
1069         else O_MEM(opt, "ratelimit-size", ratelimit_size)
1070         else O_DEC(opt, "ip-ratelimit-slabs", ip_ratelimit_slabs)
1071         else O_DEC(opt, "ratelimit-slabs", ratelimit_slabs)
1072         else O_LS2(opt, "ratelimit-for-domain", ratelimit_for_domain)
1073         else O_LS2(opt, "ratelimit-below-domain", ratelimit_below_domain)
1074         else O_DEC(opt, "ip-ratelimit-factor", ip_ratelimit_factor)
1075         else O_DEC(opt, "ratelimit-factor", ratelimit_factor)
1076         else O_DEC(opt, "fast-server-num", fast_server_num)
1077         else O_DEC(opt, "fast-server-permil", fast_server_permil)
1078         else O_DEC(opt, "val-sig-skew-min", val_sig_skew_min)
1079         else O_DEC(opt, "val-sig-skew-max", val_sig_skew_max)
1080         else O_YNO(opt, "qname-minimisation", qname_minimisation)
1081         else O_YNO(opt, "qname-minimisation-strict", qname_minimisation_strict)
1082         else O_IFC(opt, "define-tag", num_tags, tagname)
1083         else O_LTG(opt, "local-zone-tag", local_zone_tags)
1084         else O_LTG(opt, "access-control-tag", acl_tags)
1085         else O_LTG(opt, "response-ip-tag", respip_tags)
1086         else O_LS3(opt, "local-zone-override", local_zone_overrides)
1087         else O_LS3(opt, "access-control-tag-action", acl_tag_actions)
1088         else O_LS3(opt, "access-control-tag-data", acl_tag_datas)
1089         else O_LS2(opt, "access-control-view", acl_view)
1090 #ifdef USE_IPSECMOD
1091         else O_YNO(opt, "ipsecmod-enabled", ipsecmod_enabled)
1092         else O_YNO(opt, "ipsecmod-ignore-bogus", ipsecmod_ignore_bogus)
1093         else O_STR(opt, "ipsecmod-hook", ipsecmod_hook)
1094         else O_DEC(opt, "ipsecmod-max-ttl", ipsecmod_max_ttl)
1095         else O_LST(opt, "ipsecmod-whitelist", ipsecmod_whitelist)
1096         else O_YNO(opt, "ipsecmod-strict", ipsecmod_strict)
1097 #endif
1098 #ifdef USE_CACHEDB
1099         else O_STR(opt, "backend", cachedb_backend)
1100         else O_STR(opt, "secret-seed", cachedb_secret)
1101 #endif
1102 #ifdef USE_IPSET
1103         else O_STR(opt, "name-v4", ipset_name_v4)
1104         else O_STR(opt, "name-v6", ipset_name_v6)
1105 #endif
1106         /* not here:
1107          * outgoing-permit, outgoing-avoid - have list of ports
1108          * local-zone - zones and nodefault variables
1109          * local-data - see below
1110          * local-data-ptr - converted to local-data entries
1111          * stub-zone, name, stub-addr, stub-host, stub-prime
1112          * forward-zone, name, forward-addr, forward-host
1113          */
1114         else return 0;
1115         return 1;
1116 }
1117
1118 /** initialize the global cfg_parser object */
1119 static void
1120 create_cfg_parser(struct config_file* cfg, char* filename, const char* chroot)
1121 {
1122         static struct config_parser_state st;
1123         cfg_parser = &st;
1124         cfg_parser->filename = filename;
1125         cfg_parser->line = 1;
1126         cfg_parser->errors = 0;
1127         cfg_parser->cfg = cfg;
1128         cfg_parser->chroot = chroot;
1129         init_cfg_parse();
1130 }
1131
1132 int
1133 config_read(struct config_file* cfg, const char* filename, const char* chroot)
1134 {
1135         FILE *in;
1136         char *fname = (char*)filename;
1137 #ifdef HAVE_GLOB
1138         glob_t g;
1139         size_t i;
1140         int r, flags;
1141 #endif
1142         if(!fname)
1143                 return 1;
1144
1145         /* check for wildcards */
1146 #ifdef HAVE_GLOB
1147         if(!(!strchr(fname, '*') && !strchr(fname, '?') && !strchr(fname, '[') &&
1148                 !strchr(fname, '{') && !strchr(fname, '~'))) {
1149                 verbose(VERB_QUERY, "wildcard found, processing %s", fname);
1150                 flags = 0
1151 #ifdef GLOB_ERR
1152                         | GLOB_ERR
1153 #endif
1154 #ifdef GLOB_NOSORT
1155                         | GLOB_NOSORT
1156 #endif
1157 #ifdef GLOB_BRACE
1158                         | GLOB_BRACE
1159 #endif
1160 #ifdef GLOB_TILDE
1161                         | GLOB_TILDE
1162 #endif
1163                 ;
1164                 memset(&g, 0, sizeof(g));
1165                 r = glob(fname, flags, NULL, &g);
1166                 if(r) {
1167                         /* some error */
1168                         globfree(&g);
1169                         if(r == GLOB_NOMATCH) {
1170                                 verbose(VERB_QUERY, "include: "
1171                                 "no matches for %s", fname);
1172                                 return 1;
1173                         } else if(r == GLOB_NOSPACE) {
1174                                 log_err("include: %s: "
1175                                         "fnametern out of memory", fname);
1176                         } else if(r == GLOB_ABORTED) {
1177                                 log_err("wildcard include: %s: expansion "
1178                                         "aborted (%s)", fname, strerror(errno));
1179                         } else {
1180                                 log_err("wildcard include: %s: expansion "
1181                                         "failed (%s)", fname, strerror(errno));
1182                         }
1183                         /* ignore globs that yield no files */
1184                         return 1;
1185                 }
1186                 /* process files found, if any */
1187                 for(i=0; i<(size_t)g.gl_pathc; i++) {
1188                         if(!config_read(cfg, g.gl_pathv[i], chroot)) {
1189                                 log_err("error reading wildcard "
1190                                         "include: %s", g.gl_pathv[i]);
1191                                 globfree(&g);
1192                                 return 0;
1193                         }
1194                 }
1195                 globfree(&g);
1196                 return 1;
1197         }
1198 #endif /* HAVE_GLOB */
1199
1200         in = fopen(fname, "r");
1201         if(!in) {
1202                 log_err("Could not open %s: %s", fname, strerror(errno));
1203                 return 0;
1204         }
1205         create_cfg_parser(cfg, fname, chroot);
1206         ub_c_in = in;
1207         ub_c_parse();
1208         fclose(in);
1209
1210         if(!cfg->dnscrypt) cfg->dnscrypt_port = 0;
1211
1212         if(cfg_parser->errors != 0) {
1213                 fprintf(stderr, "read %s failed: %d errors in configuration file\n",
1214                         fname, cfg_parser->errors);
1215                 errno=EINVAL;
1216                 return 0;
1217         }
1218
1219         return 1;
1220 }
1221
1222 struct config_stub* cfg_stub_find(struct config_stub*** pp, const char* nm)
1223 {
1224         struct config_stub* p = *(*pp);
1225         while(p) {
1226                 if(strcmp(p->name, nm) == 0)
1227                         return p;
1228                 (*pp) = &p->next;
1229                 p = p->next;
1230         }
1231         return NULL;
1232 }
1233
1234 void
1235 config_delstrlist(struct config_strlist* p)
1236 {
1237         struct config_strlist *np;
1238         while(p) {
1239                 np = p->next;
1240                 free(p->str);
1241                 free(p);
1242                 p = np;
1243         }
1244 }
1245
1246 void
1247 config_deldblstrlist(struct config_str2list* p)
1248 {
1249         struct config_str2list *np;
1250         while(p) {
1251                 np = p->next;
1252                 free(p->str);
1253                 free(p->str2);
1254                 free(p);
1255                 p = np;
1256         }
1257 }
1258
1259 void
1260 config_deltrplstrlist(struct config_str3list* p)
1261 {
1262         struct config_str3list *np;
1263         while(p) {
1264                 np = p->next;
1265                 free(p->str);
1266                 free(p->str2);
1267                 free(p->str3);
1268                 free(p);
1269                 p = np;
1270         }
1271 }
1272
1273 void
1274 config_delauth(struct config_auth* p)
1275 {
1276         if(!p) return;
1277         free(p->name);
1278         config_delstrlist(p->masters);
1279         config_delstrlist(p->urls);
1280         config_delstrlist(p->allow_notify);
1281         free(p->zonefile);
1282         free(p);
1283 }
1284
1285 void
1286 config_delauths(struct config_auth* p)
1287 {
1288         struct config_auth* np;
1289         while(p) {
1290                 np = p->next;
1291                 config_delauth(p);
1292                 p = np;
1293         }
1294 }
1295
1296 void
1297 config_delstub(struct config_stub* p)
1298 {
1299         if(!p) return;
1300         free(p->name);
1301         config_delstrlist(p->hosts);
1302         config_delstrlist(p->addrs);
1303         free(p);
1304 }
1305
1306 void
1307 config_delstubs(struct config_stub* p)
1308 {
1309         struct config_stub* np;
1310         while(p) {
1311                 np = p->next;
1312                 config_delstub(p);
1313                 p = np;
1314         }
1315 }
1316
1317 void
1318 config_delview(struct config_view* p)
1319 {
1320         if(!p) return;
1321         free(p->name);
1322         config_deldblstrlist(p->local_zones);
1323         config_delstrlist(p->local_zones_nodefault);
1324 #ifdef USE_IPSET
1325         config_delstrlist(p->local_zones_ipset);
1326 #endif
1327         config_delstrlist(p->local_data);
1328         free(p);
1329 }
1330
1331 void
1332 config_delviews(struct config_view* p)
1333 {
1334         struct config_view* np;
1335         while(p) {
1336                 np = p->next;
1337                 config_delview(p);
1338                 p = np;
1339         }
1340 }
1341 /** delete string array */
1342 static void
1343 config_del_strarray(char** array, int num)
1344 {
1345         int i;
1346         if(!array)
1347                 return;
1348         for(i=0; i<num; i++) {
1349                 free(array[i]);
1350         }
1351         free(array);
1352 }
1353
1354 void
1355 config_del_strbytelist(struct config_strbytelist* p)
1356 {
1357         struct config_strbytelist* np;
1358         while(p) {
1359                 np = p->next;
1360                 free(p->str);
1361                 free(p->str2);
1362                 free(p);
1363                 p = np;
1364         }
1365 }
1366
1367 void
1368 config_delete(struct config_file* cfg)
1369 {
1370         if(!cfg) return;
1371         free(cfg->username);
1372         free(cfg->chrootdir);
1373         free(cfg->directory);
1374         free(cfg->logfile);
1375         free(cfg->pidfile);
1376         free(cfg->target_fetch_policy);
1377         free(cfg->ssl_service_key);
1378         free(cfg->ssl_service_pem);
1379         free(cfg->tls_cert_bundle);
1380         config_delstrlist(cfg->tls_additional_port);
1381         config_delstrlist(cfg->tls_session_ticket_keys.first);
1382         free(cfg->tls_ciphers);
1383         free(cfg->tls_ciphersuites);
1384         free(cfg->log_identity);
1385         config_del_strarray(cfg->ifs, cfg->num_ifs);
1386         config_del_strarray(cfg->out_ifs, cfg->num_out_ifs);
1387         config_delstubs(cfg->stubs);
1388         config_delstubs(cfg->forwards);
1389         config_delauths(cfg->auths);
1390         config_delviews(cfg->views);
1391         config_delstrlist(cfg->donotqueryaddrs);
1392         config_delstrlist(cfg->root_hints);
1393 #ifdef CLIENT_SUBNET
1394         config_delstrlist(cfg->client_subnet);
1395         config_delstrlist(cfg->client_subnet_zone);
1396 #endif
1397         free(cfg->identity);
1398         free(cfg->version);
1399         free(cfg->module_conf);
1400         free(cfg->outgoing_avail_ports);
1401         config_delstrlist(cfg->caps_whitelist);
1402         config_delstrlist(cfg->private_address);
1403         config_delstrlist(cfg->private_domain);
1404         config_delstrlist(cfg->auto_trust_anchor_file_list);
1405         config_delstrlist(cfg->trust_anchor_file_list);
1406         config_delstrlist(cfg->trusted_keys_file_list);
1407         config_delstrlist(cfg->trust_anchor_list);
1408         config_delstrlist(cfg->domain_insecure);
1409         free(cfg->dlv_anchor_file);
1410         config_delstrlist(cfg->dlv_anchor_list);
1411         config_deldblstrlist(cfg->acls);
1412         config_deldblstrlist(cfg->tcp_connection_limits);
1413         free(cfg->val_nsec3_key_iterations);
1414         config_deldblstrlist(cfg->local_zones);
1415         config_delstrlist(cfg->local_zones_nodefault);
1416 #ifdef USE_IPSET
1417         config_delstrlist(cfg->local_zones_ipset);
1418 #endif
1419         config_delstrlist(cfg->local_data);
1420         config_deltrplstrlist(cfg->local_zone_overrides);
1421         config_del_strarray(cfg->tagname, cfg->num_tags);
1422         config_del_strbytelist(cfg->local_zone_tags);
1423         config_del_strbytelist(cfg->acl_tags);
1424         config_del_strbytelist(cfg->respip_tags);
1425         config_deltrplstrlist(cfg->acl_tag_actions);
1426         config_deltrplstrlist(cfg->acl_tag_datas);
1427         config_delstrlist(cfg->control_ifs.first);
1428         free(cfg->server_key_file);
1429         free(cfg->server_cert_file);
1430         free(cfg->control_key_file);
1431         free(cfg->control_cert_file);
1432         free(cfg->dns64_prefix);
1433         config_delstrlist(cfg->dns64_ignore_aaaa);
1434         free(cfg->dnstap_socket_path);
1435         free(cfg->dnstap_identity);
1436         free(cfg->dnstap_version);
1437         config_deldblstrlist(cfg->ratelimit_for_domain);
1438         config_deldblstrlist(cfg->ratelimit_below_domain);
1439         config_delstrlist(cfg->python_script);
1440 #ifdef USE_IPSECMOD
1441         free(cfg->ipsecmod_hook);
1442         config_delstrlist(cfg->ipsecmod_whitelist);
1443 #endif
1444 #ifdef USE_CACHEDB
1445         free(cfg->cachedb_backend);
1446         free(cfg->cachedb_secret);
1447 #endif
1448 #ifdef USE_IPSET
1449         free(cfg->ipset_name_v4);
1450         free(cfg->ipset_name_v6);
1451 #endif
1452         free(cfg);
1453 }
1454
1455 static void
1456 init_outgoing_availports(int* a, int num)
1457 {
1458         /* generated with make iana_update */
1459         const int iana_assigned[] = {
1460 #include "util/iana_ports.inc"
1461                 -1 }; /* end marker to put behind trailing comma */
1462
1463         int i;
1464         /* do not use <1024, that could be trouble with the system, privs */
1465         for(i=1024; i<num; i++) {
1466                 a[i] = i;
1467         }
1468         /* create empty spot at 49152 to keep ephemeral ports available
1469          * to other programs */
1470         for(i=49152; i<49152+256; i++)
1471                 a[i] = 0;
1472         /* pick out all the IANA assigned ports */
1473         for(i=0; iana_assigned[i]!=-1; i++) {
1474                 if(iana_assigned[i] < num)
1475                         a[iana_assigned[i]] = 0;
1476         }
1477 }
1478
1479 int
1480 cfg_mark_ports(const char* str, int allow, int* avail, int num)
1481 {
1482         char* mid = strchr(str, '-');
1483         if(!mid) {
1484                 int port = atoi(str);
1485                 if(port == 0 && strcmp(str, "0") != 0) {
1486                         log_err("cannot parse port number '%s'", str);
1487                         return 0;
1488                 }
1489                 if(port < num)
1490                         avail[port] = (allow?port:0);
1491         } else {
1492                 int i, low, high = atoi(mid+1);
1493                 char buf[16];
1494                 if(high == 0 && strcmp(mid+1, "0") != 0) {
1495                         log_err("cannot parse port number '%s'", mid+1);
1496                         return 0;
1497                 }
1498                 if( (int)(mid-str)+1 >= (int)sizeof(buf) ) {
1499                         log_err("cannot parse port number '%s'", str);
1500                         return 0;
1501                 }
1502                 if(mid > str)
1503                         memcpy(buf, str, (size_t)(mid-str));
1504                 buf[mid-str] = 0;
1505                 low = atoi(buf);
1506                 if(low == 0 && strcmp(buf, "0") != 0) {
1507                         log_err("cannot parse port number '%s'", buf);
1508                         return 0;
1509                 }
1510                 for(i=low; i<=high; i++) {
1511                         if(i < num)
1512                                 avail[i] = (allow?i:0);
1513                 }
1514                 return 1;
1515         }
1516         return 1;
1517 }
1518
1519 int
1520 cfg_scan_ports(int* avail, int num)
1521 {
1522         int i;
1523         int count = 0;
1524         for(i=0; i<num; i++) {
1525                 if(avail[i])
1526                         count++;
1527         }
1528         return count;
1529 }
1530
1531 int cfg_condense_ports(struct config_file* cfg, int** avail)
1532 {
1533         int num = cfg_scan_ports(cfg->outgoing_avail_ports, 65536);
1534         int i, at = 0;
1535         *avail = NULL;
1536         if(num == 0)
1537                 return 0;
1538         *avail = (int*)reallocarray(NULL, (size_t)num, sizeof(int));
1539         if(!*avail)
1540                 return 0;
1541         for(i=0; i<65536; i++) {
1542                 if(cfg->outgoing_avail_ports[i])
1543                         (*avail)[at++] = cfg->outgoing_avail_ports[i];
1544         }
1545         log_assert(at == num);
1546         return num;
1547 }
1548
1549 /** print error with file and line number */
1550 static void ub_c_error_va_list(const char *fmt, va_list args)
1551 {
1552         cfg_parser->errors++;
1553         fprintf(stderr, "%s:%d: error: ", cfg_parser->filename,
1554         cfg_parser->line);
1555         vfprintf(stderr, fmt, args);
1556         fprintf(stderr, "\n");
1557 }
1558
1559 /** print error with file and line number */
1560 void ub_c_error_msg(const char* fmt, ...)
1561 {
1562         va_list args;
1563         va_start(args, fmt);
1564         ub_c_error_va_list(fmt, args);
1565         va_end(args);
1566 }
1567
1568 void ub_c_error(const char *str)
1569 {
1570         cfg_parser->errors++;
1571         fprintf(stderr, "%s:%d: error: %s\n", cfg_parser->filename,
1572                 cfg_parser->line, str);
1573 }
1574
1575 int ub_c_wrap(void)
1576 {
1577         return 1;
1578 }
1579
1580 int cfg_strlist_append(struct config_strlist_head* list, char* item)
1581 {
1582         struct config_strlist *s;
1583         if(!item || !list) {
1584                 free(item);
1585                 return 0;
1586         }
1587         s = (struct config_strlist*)calloc(1, sizeof(struct config_strlist));
1588         if(!s) {
1589                 free(item);
1590                 return 0;
1591         }
1592         s->str = item;
1593         s->next = NULL;
1594         if(list->last)
1595                 list->last->next = s;
1596         else
1597                 list->first = s;
1598         list->last = s;
1599         return 1;
1600 }
1601
1602 int
1603 cfg_region_strlist_insert(struct regional* region,
1604         struct config_strlist** head, char* item)
1605 {
1606         struct config_strlist *s;
1607         if(!item || !head)
1608                 return 0;
1609         s = (struct config_strlist*)regional_alloc_zero(region,
1610                 sizeof(struct config_strlist));
1611         if(!s)
1612                 return 0;
1613         s->str = item;
1614         s->next = *head;
1615         *head = s;
1616         return 1;
1617 }
1618
1619 struct config_strlist*
1620 cfg_strlist_find(struct config_strlist* head, const char *item)
1621 {
1622         struct config_strlist *s = head;
1623         if(!head){
1624                 return NULL;
1625         }
1626         while(s) {
1627                 if(strcmp(s->str, item) == 0) {
1628                         return s;
1629                 }
1630                 s = s->next;
1631         }
1632         return NULL;
1633 }
1634
1635 int
1636 cfg_strlist_insert(struct config_strlist** head, char* item)
1637 {
1638         struct config_strlist *s;
1639         if(!item || !head) {
1640                 free(item);
1641                 return 0;
1642         }
1643         s = (struct config_strlist*)calloc(1, sizeof(struct config_strlist));
1644         if(!s) {
1645                 free(item);
1646                 return 0;
1647         }
1648         s->str = item;
1649         s->next = *head;
1650         *head = s;
1651         return 1;
1652 }
1653
1654 int
1655 cfg_strlist_append_ex(struct config_strlist** head, char* item)
1656 {
1657         struct config_strlist *s;
1658         if(!item || !head)
1659                 return 0;
1660         s = (struct config_strlist*)calloc(1, sizeof(struct config_strlist));
1661         if(!s)
1662                 return 0;
1663         s->str = item;
1664         s->next = NULL;
1665
1666         if (*head==NULL) {
1667                 *head = s;
1668         } else {
1669                 struct config_strlist *last = *head;
1670                 while (last->next!=NULL) {
1671                     last = last->next;
1672                 }
1673                 last->next = s;
1674         }
1675
1676         return 1;
1677 }
1678
1679 int
1680 cfg_str2list_insert(struct config_str2list** head, char* item, char* i2)
1681 {
1682         struct config_str2list *s;
1683         if(!item || !i2 || !head) {
1684                 free(item);
1685                 free(i2);
1686                 return 0;
1687         }
1688         s = (struct config_str2list*)calloc(1, sizeof(struct config_str2list));
1689         if(!s) {
1690                 free(item);
1691                 free(i2);
1692                 return 0;
1693         }
1694         s->str = item;
1695         s->str2 = i2;
1696         s->next = *head;
1697         *head = s;
1698         return 1;
1699 }
1700
1701 int
1702 cfg_str3list_insert(struct config_str3list** head, char* item, char* i2,
1703         char* i3)
1704 {
1705         struct config_str3list *s;
1706         if(!item || !i2 || !i3 || !head)
1707                 return 0;
1708         s = (struct config_str3list*)calloc(1, sizeof(struct config_str3list));
1709         if(!s)
1710                 return 0;
1711         s->str = item;
1712         s->str2 = i2;
1713         s->str3 = i3;
1714         s->next = *head;
1715         *head = s;
1716         return 1;
1717 }
1718
1719 int
1720 cfg_strbytelist_insert(struct config_strbytelist** head, char* item,
1721         uint8_t* i2, size_t i2len)
1722 {
1723         struct config_strbytelist* s;
1724         if(!item || !i2 || !head)
1725                 return 0;
1726         s = (struct config_strbytelist*)calloc(1, sizeof(*s));
1727         if(!s)
1728                 return 0;
1729         s->str = item;
1730         s->str2 = i2;
1731         s->str2len = i2len;
1732         s->next = *head;
1733         *head = s;
1734         return 1;
1735 }
1736
1737 time_t
1738 cfg_convert_timeval(const char* str)
1739 {
1740         time_t t;
1741         struct tm tm;
1742         memset(&tm, 0, sizeof(tm));
1743         if(strlen(str) < 14)
1744                 return 0;
1745         if(sscanf(str, "%4d%2d%2d%2d%2d%2d", &tm.tm_year, &tm.tm_mon,
1746                 &tm.tm_mday, &tm.tm_hour, &tm.tm_min, &tm.tm_sec) != 6)
1747                 return 0;
1748         tm.tm_year -= 1900;
1749         tm.tm_mon--;
1750         /* Check values */
1751         if (tm.tm_year < 70)    return 0;
1752         if (tm.tm_mon < 0 || tm.tm_mon > 11)    return 0;
1753         if (tm.tm_mday < 1 || tm.tm_mday > 31)  return 0;
1754         if (tm.tm_hour < 0 || tm.tm_hour > 23)  return 0;
1755         if (tm.tm_min < 0 || tm.tm_min > 59)    return 0;
1756         if (tm.tm_sec < 0 || tm.tm_sec > 59)    return 0;
1757         /* call ldns conversion function */
1758         t = sldns_mktime_from_utc(&tm);
1759         return t;
1760 }
1761
1762 int
1763 cfg_count_numbers(const char* s)
1764 {
1765         /* format ::= (sp num)+ sp  */
1766         /* num ::= [-](0-9)+        */
1767         /* sp ::= (space|tab)*      */
1768         int num = 0;
1769         while(*s) {
1770                 while(*s && isspace((unsigned char)*s))
1771                         s++;
1772                 if(!*s) /* end of string */
1773                         break;
1774                 if(*s == '-')
1775                         s++;
1776                 if(!*s) /* only - not allowed */
1777                         return 0;
1778                 if(!isdigit((unsigned char)*s)) /* bad character */
1779                         return 0;
1780                 while(*s && isdigit((unsigned char)*s))
1781                         s++;
1782                 num++;
1783         }
1784         return num;
1785 }
1786
1787 /** all digit number */
1788 static int isalldigit(const char* str, size_t l)
1789 {
1790         size_t i;
1791         for(i=0; i<l; i++)
1792                 if(!isdigit((unsigned char)str[i]))
1793                         return 0;
1794         return 1;
1795 }
1796
1797 int
1798 cfg_parse_memsize(const char* str, size_t* res)
1799 {
1800         size_t len;
1801         size_t mult = 1;
1802         if(!str || (len=(size_t)strlen(str)) == 0) {
1803                 log_err("not a size: '%s'", str);
1804                 return 0;
1805         }
1806         if(isalldigit(str, len)) {
1807                 *res = (size_t)atol(str);
1808                 return 1;
1809         }
1810         /* check appended num */
1811         while(len>0 && str[len-1]==' ')
1812                 len--;
1813         if(len > 1 && str[len-1] == 'b')
1814                 len--;
1815         else if(len > 1 && str[len-1] == 'B')
1816                 len--;
1817
1818         if(len > 1 && tolower((unsigned char)str[len-1]) == 'g')
1819                 mult = 1024*1024*1024;
1820         else if(len > 1 && tolower((unsigned char)str[len-1]) == 'm')
1821                 mult = 1024*1024;
1822         else if(len > 1 && tolower((unsigned char)str[len-1]) == 'k')
1823                 mult = 1024;
1824         else if(len > 0 && isdigit((unsigned char)str[len-1]))
1825                 mult = 1;
1826         else {
1827                 log_err("unknown size specifier: '%s'", str);
1828                 return 0;
1829         }
1830         while(len>1 && str[len-2]==' ')
1831                 len--;
1832
1833         if(!isalldigit(str, len-1)) {
1834                 log_err("unknown size specifier: '%s'", str);
1835                 return 0;
1836         }
1837         *res = ((size_t)atol(str)) * mult;
1838         return 1;
1839 }
1840
1841 int
1842 find_tag_id(struct config_file* cfg, const char* tag)
1843 {
1844         int i;
1845         for(i=0; i<cfg->num_tags; i++) {
1846                 if(strcmp(cfg->tagname[i], tag) == 0)
1847                         return i;
1848         }
1849         return -1;
1850 }
1851
1852 int
1853 config_add_tag(struct config_file* cfg, const char* tag)
1854 {
1855         char** newarray;
1856         char* newtag;
1857         if(find_tag_id(cfg, tag) != -1)
1858                 return 1; /* nothing to do */
1859         newarray = (char**)malloc(sizeof(char*)*(cfg->num_tags+1));
1860         if(!newarray)
1861                 return 0;
1862         newtag = strdup(tag);
1863         if(!newtag) {
1864                 free(newarray);
1865                 return 0;
1866         }
1867         if(cfg->tagname) {
1868                 memcpy(newarray, cfg->tagname, sizeof(char*)*cfg->num_tags);
1869                 free(cfg->tagname);
1870         }
1871         newarray[cfg->num_tags++] = newtag;
1872         cfg->tagname = newarray;
1873         return 1;
1874 }
1875
1876 /** set a bit in a bit array */
1877 static void
1878 cfg_set_bit(uint8_t* bitlist, size_t len, int id)
1879 {
1880         int pos = id/8;
1881         log_assert((size_t)pos < len);
1882         (void)len;
1883         bitlist[pos] |= 1<<(id%8);
1884 }
1885
1886 uint8_t* config_parse_taglist(struct config_file* cfg, char* str,
1887         size_t* listlen)
1888 {
1889         uint8_t* taglist = NULL;
1890         size_t len = 0;
1891         char* p, *s;
1892
1893         /* allocate */
1894         if(cfg->num_tags == 0) {
1895                 log_err("parse taglist, but no tags defined");
1896                 return 0;
1897         }
1898         len = (size_t)(cfg->num_tags+7)/8;
1899         taglist = calloc(1, len);
1900         if(!taglist) {
1901                 log_err("out of memory");
1902                 return 0;
1903         }
1904
1905         /* parse */
1906         s = str;
1907         while((p=strsep(&s, " \t\n")) != NULL) {
1908                 if(*p) {
1909                         int id = find_tag_id(cfg, p);
1910                         /* set this bit in the bitlist */
1911                         if(id == -1) {
1912                                 log_err("unknown tag: %s", p);
1913                                 free(taglist);
1914                                 return 0;
1915                         }
1916                         cfg_set_bit(taglist, len, id);
1917                 }
1918         }
1919
1920         *listlen = len;
1921         return taglist;
1922 }
1923
1924 char* config_taglist2str(struct config_file* cfg, uint8_t* taglist,
1925         size_t taglen)
1926 {
1927         char buf[10240];
1928         size_t i, j, len = 0;
1929         buf[0] = 0;
1930         for(i=0; i<taglen; i++) {
1931                 if(taglist[i] == 0)
1932                         continue;
1933                 for(j=0; j<8; j++) {
1934                         if((taglist[i] & (1<<j)) != 0) {
1935                                 size_t id = i*8 + j;
1936                                 snprintf(buf+len, sizeof(buf)-len, "%s%s",
1937                                         (len==0?"":" "), cfg->tagname[id]);
1938                                 len += strlen(buf+len);
1939                         }
1940                 }
1941         }
1942         return strdup(buf);
1943 }
1944
1945 int taglist_intersect(uint8_t* list1, size_t list1len, uint8_t* list2,
1946         size_t list2len)
1947 {
1948         size_t i;
1949         if(!list1 || !list2)
1950                 return 0;
1951         for(i=0; i<list1len && i<list2len; i++) {
1952                 if((list1[i] & list2[i]) != 0)
1953                         return 1;
1954         }
1955         return 0;
1956 }
1957
1958 void
1959 config_apply(struct config_file* config)
1960 {
1961         MAX_TTL = (time_t)config->max_ttl;
1962         MIN_TTL = (time_t)config->min_ttl;
1963         SERVE_EXPIRED_TTL = (time_t)config->serve_expired_ttl;
1964         MAX_NEG_TTL = (time_t)config->max_negative_ttl;
1965         RTT_MIN_TIMEOUT = config->infra_cache_min_rtt;
1966         EDNS_ADVERTISED_SIZE = (uint16_t)config->edns_buffer_size;
1967         MINIMAL_RESPONSES = config->minimal_responses;
1968         RRSET_ROUNDROBIN = config->rrset_roundrobin;
1969         LOG_TAG_QUERYREPLY = config->log_tag_queryreply;
1970         UNKNOWN_SERVER_NICENESS = config->unknown_server_time_limit;
1971         log_set_time_asc(config->log_time_ascii);
1972         autr_permit_small_holddown = config->permit_small_holddown;
1973         stream_wait_max = config->stream_wait_size;
1974 }
1975
1976 void config_lookup_uid(struct config_file* cfg)
1977 {
1978 #ifdef HAVE_GETPWNAM
1979         /* translate username into uid and gid */
1980         if(cfg->username && cfg->username[0]) {
1981                 struct passwd *pwd;
1982                 if((pwd = getpwnam(cfg->username)) != NULL) {
1983                         cfg_uid = pwd->pw_uid;
1984                         cfg_gid = pwd->pw_gid;
1985                 }
1986         }
1987 #else
1988         (void)cfg;
1989 #endif
1990 }
1991
1992 /**
1993  * Calculate string length of full pathname in original filesys
1994  * @param fname: the path name to convert.
1995  *      Must not be null or empty.
1996  * @param cfg: config struct for chroot and chdir (if set).
1997  * @param use_chdir: if false, only chroot is applied.
1998  * @return length of string.
1999  *      remember to allocate one more for 0 at end in mallocs.
2000  */
2001 static size_t
2002 strlen_after_chroot(const char* fname, struct config_file* cfg, int use_chdir)
2003 {
2004         size_t len = 0;
2005         int slashit = 0;
2006         if(cfg->chrootdir && cfg->chrootdir[0] &&
2007                 strncmp(cfg->chrootdir, fname, strlen(cfg->chrootdir)) == 0) {
2008                 /* already full pathname, return it */
2009                 return strlen(fname);
2010         }
2011         /* chroot */
2012         if(cfg->chrootdir && cfg->chrootdir[0]) {
2013                 /* start with chrootdir */
2014                 len += strlen(cfg->chrootdir);
2015                 slashit = 1;
2016         }
2017         /* chdir */
2018 #ifdef UB_ON_WINDOWS
2019         if(fname[0] != 0 && fname[1] == ':') {
2020                 /* full path, no chdir */
2021         } else
2022 #endif
2023         if(fname[0] == '/' || !use_chdir) {
2024                 /* full path, no chdir */
2025         } else if(cfg->directory && cfg->directory[0]) {
2026                 /* prepend chdir */
2027                 if(slashit && cfg->directory[0] != '/')
2028                         len++;
2029                 if(cfg->chrootdir && cfg->chrootdir[0] &&
2030                         strncmp(cfg->chrootdir, cfg->directory,
2031                         strlen(cfg->chrootdir)) == 0)
2032                         len += strlen(cfg->directory)-strlen(cfg->chrootdir);
2033                 else    len += strlen(cfg->directory);
2034                 slashit = 1;
2035         }
2036         /* fname */
2037         if(slashit && fname[0] != '/')
2038                 len++;
2039         len += strlen(fname);
2040         return len;
2041 }
2042
2043 char*
2044 fname_after_chroot(const char* fname, struct config_file* cfg, int use_chdir)
2045 {
2046         size_t len = strlen_after_chroot(fname, cfg, use_chdir)+1;
2047         int slashit = 0;
2048         char* buf = (char*)malloc(len);
2049         if(!buf)
2050                 return NULL;
2051         buf[0] = 0;
2052         /* is fname already in chroot ? */
2053         if(cfg->chrootdir && cfg->chrootdir[0] &&
2054                 strncmp(cfg->chrootdir, fname, strlen(cfg->chrootdir)) == 0) {
2055                 /* already full pathname, return it */
2056                 (void)strlcpy(buf, fname, len);
2057                 buf[len-1] = 0;
2058                 return buf;
2059         }
2060         /* chroot */
2061         if(cfg->chrootdir && cfg->chrootdir[0]) {
2062                 /* start with chrootdir */
2063                 (void)strlcpy(buf, cfg->chrootdir, len);
2064                 slashit = 1;
2065         }
2066 #ifdef UB_ON_WINDOWS
2067         if(fname[0] != 0 && fname[1] == ':') {
2068                 /* full path, no chdir */
2069         } else
2070 #endif
2071         /* chdir */
2072         if(fname[0] == '/' || !use_chdir) {
2073                 /* full path, no chdir */
2074         } else if(cfg->directory && cfg->directory[0]) {
2075                 /* prepend chdir */
2076                 if(slashit && cfg->directory[0] != '/')
2077                         (void)strlcat(buf, "/", len);
2078                 /* is the directory already in the chroot? */
2079                 if(cfg->chrootdir && cfg->chrootdir[0] &&
2080                         strncmp(cfg->chrootdir, cfg->directory,
2081                         strlen(cfg->chrootdir)) == 0)
2082                         (void)strlcat(buf, cfg->directory+strlen(cfg->chrootdir),
2083                                    len);
2084                 else (void)strlcat(buf, cfg->directory, len);
2085                 slashit = 1;
2086         }
2087         /* fname */
2088         if(slashit && fname[0] != '/')
2089                 (void)strlcat(buf, "/", len);
2090         (void)strlcat(buf, fname, len);
2091         buf[len-1] = 0;
2092         return buf;
2093 }
2094
2095 /** return next space character in string */
2096 static char* next_space_pos(const char* str)
2097 {
2098         char* sp = strchr(str, ' ');
2099         char* tab = strchr(str, '\t');
2100         if(!tab && !sp)
2101                 return NULL;
2102         if(!sp) return tab;
2103         if(!tab) return sp;
2104         return (sp<tab)?sp:tab;
2105 }
2106
2107 /** return last space character in string */
2108 static char* last_space_pos(const char* str)
2109 {
2110         char* sp = strrchr(str, ' ');
2111         char* tab = strrchr(str, '\t');
2112         if(!tab && !sp)
2113                 return NULL;
2114         if(!sp) return tab;
2115         if(!tab) return sp;
2116         return (sp>tab)?sp:tab;
2117 }
2118
2119 int
2120 cfg_parse_local_zone(struct config_file* cfg, const char* val)
2121 {
2122         const char *type, *name_end, *name;
2123         char buf[256];
2124
2125         /* parse it as: [zone_name] [between stuff] [zone_type] */
2126         name = val;
2127         while(*name && isspace((unsigned char)*name))
2128                 name++;
2129         if(!*name) {
2130                 log_err("syntax error: too short: %s", val);
2131                 return 0;
2132         }
2133         name_end = next_space_pos(name);
2134         if(!name_end || !*name_end) {
2135                 log_err("syntax error: expected zone type: %s", val);
2136                 return 0;
2137         }
2138         if (name_end - name > 255) {
2139                 log_err("syntax error: bad zone name: %s", val);
2140                 return 0;
2141         }
2142         (void)strlcpy(buf, name, sizeof(buf));
2143         buf[name_end-name] = '\0';
2144
2145         type = last_space_pos(name_end);
2146         while(type && *type && isspace((unsigned char)*type))
2147                 type++;
2148         if(!type || !*type) {
2149                 log_err("syntax error: expected zone type: %s", val);
2150                 return 0;
2151         }
2152
2153         if(strcmp(type, "nodefault")==0) {
2154                 return cfg_strlist_insert(&cfg->local_zones_nodefault,
2155                         strdup(name));
2156 #ifdef USE_IPSET
2157         } else if(strcmp(type, "ipset")==0) {
2158                 return cfg_strlist_insert(&cfg->local_zones_ipset,
2159                         strdup(name));
2160 #endif
2161         } else {
2162                 return cfg_str2list_insert(&cfg->local_zones, strdup(buf),
2163                         strdup(type));
2164         }
2165 }
2166
2167 char* cfg_ptr_reverse(char* str)
2168 {
2169         char* ip, *ip_end;
2170         char* name;
2171         char* result;
2172         char buf[1024];
2173         struct sockaddr_storage addr;
2174         socklen_t addrlen;
2175
2176         /* parse it as: [IP] [between stuff] [name] */
2177         ip = str;
2178         while(*ip && isspace((unsigned char)*ip))
2179                 ip++;
2180         if(!*ip) {
2181                 log_err("syntax error: too short: %s", str);
2182                 return NULL;
2183         }
2184         ip_end = next_space_pos(ip);
2185         if(!ip_end || !*ip_end) {
2186                 log_err("syntax error: expected name: %s", str);
2187                 return NULL;
2188         }
2189
2190         name = last_space_pos(ip_end);
2191         if(!name || !*name) {
2192                 log_err("syntax error: expected name: %s", str);
2193                 return NULL;
2194         }
2195
2196         sscanf(ip, "%100s", buf);
2197         buf[sizeof(buf)-1]=0;
2198
2199         if(!ipstrtoaddr(buf, UNBOUND_DNS_PORT, &addr, &addrlen)) {
2200                 log_err("syntax error: cannot parse address: %s", str);
2201                 return NULL;
2202         }
2203
2204         /* reverse IPv4:
2205          * ddd.ddd.ddd.ddd.in-addr-arpa.
2206          * IPv6: (h.){32}.ip6.arpa.  */
2207
2208         if(addr_is_ip6(&addr, addrlen)) {
2209                 uint8_t ad[16];
2210                 const char* hex = "0123456789abcdef";
2211                 char *p = buf;
2212                 int i;
2213                 memmove(ad, &((struct sockaddr_in6*)&addr)->sin6_addr,
2214                         sizeof(ad));
2215                 for(i=15; i>=0; i--) {
2216                         uint8_t b = ad[i];
2217                         *p++ = hex[ (b&0x0f) ];
2218                         *p++ = '.';
2219                         *p++ = hex[ (b&0xf0) >> 4 ];
2220                         *p++ = '.';
2221                 }
2222                 snprintf(buf+16*4, sizeof(buf)-16*4, "ip6.arpa. ");
2223         } else {
2224                 uint8_t ad[4];
2225                 memmove(ad, &((struct sockaddr_in*)&addr)->sin_addr,
2226                         sizeof(ad));
2227                 snprintf(buf, sizeof(buf), "%u.%u.%u.%u.in-addr.arpa. ",
2228                         (unsigned)ad[3], (unsigned)ad[2],
2229                         (unsigned)ad[1], (unsigned)ad[0]);
2230         }
2231
2232         /* printed the reverse address, now the between goop and name on end */
2233         while(*ip_end && isspace((unsigned char)*ip_end))
2234                 ip_end++;
2235         if(name>ip_end) {
2236                 snprintf(buf+strlen(buf), sizeof(buf)-strlen(buf), "%.*s",
2237                         (int)(name-ip_end), ip_end);
2238         }
2239         snprintf(buf+strlen(buf), sizeof(buf)-strlen(buf), " PTR %s", name);
2240
2241         result = strdup(buf);
2242         if(!result) {
2243                 log_err("out of memory parsing %s", str);
2244                 return NULL;
2245         }
2246         return result;
2247 }
2248
2249 #ifdef UB_ON_WINDOWS
2250 char*
2251 w_lookup_reg_str(const char* key, const char* name)
2252 {
2253         HKEY hk = NULL;
2254         DWORD type = 0;
2255         BYTE buf[1024];
2256         DWORD len = (DWORD)sizeof(buf);
2257         LONG ret;
2258         char* result = NULL;
2259         ret = RegOpenKeyEx(HKEY_LOCAL_MACHINE, key, 0, KEY_READ, &hk);
2260         if(ret == ERROR_FILE_NOT_FOUND)
2261                 return NULL; /* key does not exist */
2262         else if(ret != ERROR_SUCCESS) {
2263                 log_err("RegOpenKeyEx failed");
2264                 return NULL;
2265         }
2266         ret = RegQueryValueEx(hk, (LPCTSTR)name, 0, &type, buf, &len);
2267         if(RegCloseKey(hk))
2268                 log_err("RegCloseKey");
2269         if(ret == ERROR_FILE_NOT_FOUND)
2270                 return NULL; /* name does not exist */
2271         else if(ret != ERROR_SUCCESS) {
2272                 log_err("RegQueryValueEx failed");
2273                 return NULL;
2274         }
2275         if(type == REG_SZ || type == REG_MULTI_SZ || type == REG_EXPAND_SZ) {
2276                 buf[sizeof(buf)-1] = 0;
2277                 buf[sizeof(buf)-2] = 0; /* for multi_sz */
2278                 result = strdup((char*)buf);
2279                 if(!result) log_err("out of memory");
2280         }
2281         return result;
2282 }
2283
2284 void w_config_adjust_directory(struct config_file* cfg)
2285 {
2286         if(cfg->directory && cfg->directory[0]) {
2287                 TCHAR dirbuf[2*MAX_PATH+4];
2288                 if(strcmp(cfg->directory, "%EXECUTABLE%") == 0) {
2289                         /* get executable path, and if that contains
2290                          * directories, snip off the filename part */
2291                         dirbuf[0] = 0;
2292                         if(!GetModuleFileName(NULL, dirbuf, MAX_PATH))
2293                                 log_err("could not GetModuleFileName");
2294                         if(strrchr(dirbuf, '\\')) {
2295                                 (strrchr(dirbuf, '\\'))[0] = 0;
2296                         } else log_err("GetModuleFileName had no path");
2297                         if(dirbuf[0]) {
2298                                 /* adjust directory for later lookups to work*/
2299                                 free(cfg->directory);
2300                                 cfg->directory = memdup(dirbuf, strlen(dirbuf)+1);
2301                         }
2302                 }
2303         }
2304 }
2305 #endif /* UB_ON_WINDOWS */
2306
2307 void errinf(struct module_qstate* qstate, const char* str)
2308 {
2309         struct config_strlist* p;
2310         if((qstate->env->cfg->val_log_level < 2 && !qstate->env->cfg->log_servfail) || !str)
2311                 return;
2312         p = (struct config_strlist*)regional_alloc(qstate->region, sizeof(*p));
2313         if(!p) {
2314                 log_err("malloc failure in validator-error-info string");
2315                 return;
2316         }
2317         p->next = NULL;
2318         p->str = regional_strdup(qstate->region, str);
2319         if(!p->str) {
2320                 log_err("malloc failure in validator-error-info string");
2321                 return;
2322         }
2323         /* add at end */
2324         if(qstate->errinf) {
2325                 struct config_strlist* q = qstate->errinf;
2326                 while(q->next)
2327                         q = q->next;
2328                 q->next = p;
2329         } else  qstate->errinf = p;
2330 }
2331
2332 void errinf_origin(struct module_qstate* qstate, struct sock_list *origin)
2333 {
2334         struct sock_list* p;
2335         if(qstate->env->cfg->val_log_level < 2 && !qstate->env->cfg->log_servfail)
2336                 return;
2337         for(p=origin; p; p=p->next) {
2338                 char buf[256];
2339                 if(p == origin)
2340                         snprintf(buf, sizeof(buf), "from ");
2341                 else    snprintf(buf, sizeof(buf), "and ");
2342                 if(p->len == 0)
2343                         snprintf(buf+strlen(buf), sizeof(buf)-strlen(buf),
2344                                 "cache");
2345                 else
2346                         addr_to_str(&p->addr, p->len, buf+strlen(buf),
2347                                 sizeof(buf)-strlen(buf));
2348                 errinf(qstate, buf);
2349         }
2350 }
2351
2352 char* errinf_to_str_bogus(struct module_qstate* qstate)
2353 {
2354         char buf[20480];
2355         char* p = buf;
2356         size_t left = sizeof(buf);
2357         struct config_strlist* s;
2358         char dname[LDNS_MAX_DOMAINLEN+1];
2359         char t[16], c[16];
2360         sldns_wire2str_type_buf(qstate->qinfo.qtype, t, sizeof(t));
2361         sldns_wire2str_class_buf(qstate->qinfo.qclass, c, sizeof(c));
2362         dname_str(qstate->qinfo.qname, dname);
2363         snprintf(p, left, "validation failure <%s %s %s>:", dname, t, c);
2364         left -= strlen(p); p += strlen(p);
2365         if(!qstate->errinf)
2366                 snprintf(p, left, " misc failure");
2367         else for(s=qstate->errinf; s; s=s->next) {
2368                 snprintf(p, left, " %s", s->str);
2369                 left -= strlen(p); p += strlen(p);
2370         }
2371         p = strdup(buf);
2372         if(!p)
2373                 log_err("malloc failure in errinf_to_str");
2374         return p;
2375 }
2376
2377 char* errinf_to_str_servfail(struct module_qstate* qstate)
2378 {
2379         char buf[20480];
2380         char* p = buf;
2381         size_t left = sizeof(buf);
2382         struct config_strlist* s;
2383         char dname[LDNS_MAX_DOMAINLEN+1];
2384         char t[16], c[16];
2385         sldns_wire2str_type_buf(qstate->qinfo.qtype, t, sizeof(t));
2386         sldns_wire2str_class_buf(qstate->qinfo.qclass, c, sizeof(c));
2387         dname_str(qstate->qinfo.qname, dname);
2388         snprintf(p, left, "SERVFAIL <%s %s %s>:", dname, t, c);
2389         left -= strlen(p); p += strlen(p);
2390         if(!qstate->errinf)
2391                 snprintf(p, left, " misc failure");
2392         else for(s=qstate->errinf; s; s=s->next) {
2393                 snprintf(p, left, " %s", s->str);
2394                 left -= strlen(p); p += strlen(p);
2395         }
2396         p = strdup(buf);
2397         if(!p)
2398                 log_err("malloc failure in errinf_to_str");
2399         return p;
2400 }
2401
2402 void errinf_rrset(struct module_qstate* qstate, struct ub_packed_rrset_key *rr)
2403 {
2404         char buf[1024];
2405         char dname[LDNS_MAX_DOMAINLEN+1];
2406         char t[16], c[16];
2407         if((qstate->env->cfg->val_log_level < 2 && !qstate->env->cfg->log_servfail) || !rr)
2408                 return;
2409         sldns_wire2str_type_buf(ntohs(rr->rk.type), t, sizeof(t));
2410         sldns_wire2str_class_buf(ntohs(rr->rk.rrset_class), c, sizeof(c));
2411         dname_str(rr->rk.dname, dname);
2412         snprintf(buf, sizeof(buf), "for <%s %s %s>", dname, t, c);
2413         errinf(qstate, buf);
2414 }
2415
2416 void errinf_dname(struct module_qstate* qstate, const char* str, uint8_t* dname)
2417 {
2418         char b[1024];
2419         char buf[LDNS_MAX_DOMAINLEN+1];
2420         if((qstate->env->cfg->val_log_level < 2 && !qstate->env->cfg->log_servfail) || !str || !dname)
2421                 return;
2422         dname_str(dname, buf);
2423         snprintf(b, sizeof(b), "%s %s", str, buf);
2424         errinf(qstate, b);
2425 }
2426
2427 int options_remote_is_address(struct config_file* cfg)
2428 {
2429         if(!cfg->remote_control_enable) return 0;
2430         if(!cfg->control_ifs.first) return 1;
2431         if(!cfg->control_ifs.first->str) return 1;
2432         if(cfg->control_ifs.first->str[0] == 0) return 1;
2433         return (cfg->control_ifs.first->str[0] != '/');
2434 }
2435