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