config_file.c revision 289063
1238106Sdes/* 2238106Sdes * util/config_file.c - reads and stores the config file for unbound. 3238106Sdes * 4238106Sdes * Copyright (c) 2007, NLnet Labs. All rights reserved. 5238106Sdes * 6238106Sdes * This software is open source. 7238106Sdes * 8238106Sdes * Redistribution and use in source and binary forms, with or without 9238106Sdes * modification, are permitted provided that the following conditions 10238106Sdes * are met: 11238106Sdes * 12238106Sdes * Redistributions of source code must retain the above copyright notice, 13238106Sdes * this list of conditions and the following disclaimer. 14238106Sdes * 15238106Sdes * Redistributions in binary form must reproduce the above copyright notice, 16238106Sdes * this list of conditions and the following disclaimer in the documentation 17238106Sdes * and/or other materials provided with the distribution. 18238106Sdes * 19238106Sdes * Neither the name of the NLNET LABS nor the names of its contributors may 20238106Sdes * be used to endorse or promote products derived from this software without 21238106Sdes * specific prior written permission. 22238106Sdes * 23238106Sdes * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 24266114Sdes * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 25266114Sdes * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 26266114Sdes * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 27266114Sdes * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 28266114Sdes * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED 29266114Sdes * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 30266114Sdes * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 31266114Sdes * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 32266114Sdes * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 33266114Sdes * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 34238106Sdes */ 35238106Sdes 36238106Sdes/** 37238106Sdes * \file 38238106Sdes * 39238106Sdes * This file contains functions for the config file. 40238106Sdes */ 41238106Sdes 42238106Sdes#include "config.h" 43238106Sdes#include <ctype.h> 44266114Sdes#include <stdarg.h> 45266114Sdes#ifdef HAVE_TIME_H 46266114Sdes#include <time.h> 47266114Sdes#endif 48238106Sdes#include "util/log.h" 49238106Sdes#include "util/configyyrename.h" 50238106Sdes#include "util/config_file.h" 51268883Sdes#include "configparser.h" 52238106Sdes#include "util/net_help.h" 53238106Sdes#include "util/data/msgparse.h" 54238106Sdes#include "util/module.h" 55238106Sdes#include "util/regional.h" 56238106Sdes#include "util/fptr_wlist.h" 57238106Sdes#include "util/data/dname.h" 58282089Sdes#include "util/rtt.h" 59287917Sdes#include "services/cache/infra.h" 60287917Sdes#include "sldns/wire2str.h" 61287917Sdes#include "sldns/parseutil.h" 62249141Sdes#ifdef HAVE_GLOB_H 63249141Sdes# include <glob.h> 64249141Sdes#endif 65276699Sdes#ifdef HAVE_PWD_H 66276699Sdes#include <pwd.h> 67276699Sdes#endif 68249141Sdes 69282089Sdes/** from cfg username, after daemonise setup performed */ 70282089Sdesuid_t cfg_uid = (uid_t)-1; 71282089Sdes/** from cfg username, after daemonise setup performed */ 72282089Sdesgid_t cfg_gid = (gid_t)-1; 73289063Sdes/** for debug allow small timeout values for fast rollovers */ 74289063Sdesint autr_permit_small_holddown = 0; 75282089Sdes 76238106Sdes/** global config during parsing */ 77238106Sdesstruct config_parser_state* cfg_parser = 0; 78238106Sdes 79238106Sdes/** init ports possible for use */ 80238106Sdesstatic void init_outgoing_availports(int* array, int num); 81238106Sdes 82238106Sdesstruct config_file* 83238106Sdesconfig_create(void) 84238106Sdes{ 85238106Sdes struct config_file* cfg; 86238106Sdes cfg = (struct config_file*)calloc(1, sizeof(struct config_file)); 87238106Sdes if(!cfg) 88238106Sdes return NULL; 89238106Sdes /* the defaults if no config is present */ 90238106Sdes cfg->verbosity = 1; 91238106Sdes cfg->stat_interval = 0; 92238106Sdes cfg->stat_cumulative = 0; 93238106Sdes cfg->stat_extended = 0; 94238106Sdes cfg->num_threads = 1; 95238106Sdes cfg->port = UNBOUND_DNS_PORT; 96238106Sdes cfg->do_ip4 = 1; 97238106Sdes cfg->do_ip6 = 1; 98238106Sdes cfg->do_udp = 1; 99238106Sdes cfg->do_tcp = 1; 100238106Sdes cfg->tcp_upstream = 0; 101238106Sdes cfg->ssl_service_key = NULL; 102238106Sdes cfg->ssl_service_pem = NULL; 103238106Sdes cfg->ssl_port = 443; 104238106Sdes cfg->ssl_upstream = 0; 105238106Sdes cfg->use_syslog = 1; 106238106Sdes cfg->log_time_ascii = 0; 107238106Sdes cfg->log_queries = 0; 108238106Sdes#ifndef USE_WINSOCK 109238106Sdes# ifdef USE_MINI_EVENT 110238106Sdes /* select max 1024 sockets */ 111238106Sdes cfg->outgoing_num_ports = 960; 112238106Sdes cfg->num_queries_per_thread = 512; 113238106Sdes# else 114238106Sdes /* libevent can use many sockets */ 115238106Sdes cfg->outgoing_num_ports = 4096; 116238106Sdes cfg->num_queries_per_thread = 1024; 117238106Sdes# endif 118238106Sdes cfg->outgoing_num_tcp = 10; 119238106Sdes cfg->incoming_num_tcp = 10; 120238106Sdes#else 121238106Sdes cfg->outgoing_num_ports = 48; /* windows is limited in num fds */ 122238106Sdes cfg->num_queries_per_thread = 24; 123238106Sdes cfg->outgoing_num_tcp = 2; /* leaves 64-52=12 for: 4if,1stop,thread4 */ 124238106Sdes cfg->incoming_num_tcp = 2; 125238106Sdes#endif 126238106Sdes cfg->edns_buffer_size = 4096; /* 4k from rfc recommendation */ 127238106Sdes cfg->msg_buffer_size = 65552; /* 64 k + a small margin */ 128238106Sdes cfg->msg_cache_size = 4 * 1024 * 1024; 129238106Sdes cfg->msg_cache_slabs = 4; 130238106Sdes cfg->jostle_time = 200; 131238106Sdes cfg->rrset_cache_size = 4 * 1024 * 1024; 132238106Sdes cfg->rrset_cache_slabs = 4; 133238106Sdes cfg->host_ttl = 900; 134238106Sdes cfg->bogus_ttl = 60; 135238106Sdes cfg->min_ttl = 0; 136238106Sdes cfg->max_ttl = 3600 * 24; 137287917Sdes cfg->max_negative_ttl = 3600; 138238106Sdes cfg->prefetch = 0; 139238106Sdes cfg->prefetch_key = 0; 140238106Sdes cfg->infra_cache_slabs = 4; 141238106Sdes cfg->infra_cache_numhosts = 10000; 142282089Sdes cfg->infra_cache_min_rtt = 50; 143266114Sdes cfg->delay_close = 0; 144238106Sdes if(!(cfg->outgoing_avail_ports = (int*)calloc(65536, sizeof(int)))) 145238106Sdes goto error_exit; 146238106Sdes init_outgoing_availports(cfg->outgoing_avail_ports, 65536); 147238106Sdes if(!(cfg->username = strdup(UB_USERNAME))) goto error_exit; 148238106Sdes#ifdef HAVE_CHROOT 149238106Sdes if(!(cfg->chrootdir = strdup(CHROOT_DIR))) goto error_exit; 150238106Sdes#endif 151238106Sdes if(!(cfg->directory = strdup(RUN_DIR))) goto error_exit; 152238106Sdes if(!(cfg->logfile = strdup(""))) goto error_exit; 153238106Sdes if(!(cfg->pidfile = strdup(PIDFILE))) goto error_exit; 154238106Sdes if(!(cfg->target_fetch_policy = strdup("3 2 1 0 0"))) goto error_exit; 155238106Sdes cfg->donotqueryaddrs = NULL; 156238106Sdes cfg->donotquery_localhost = 1; 157238106Sdes cfg->root_hints = NULL; 158238106Sdes cfg->do_daemonize = 1; 159238106Sdes cfg->if_automatic = 0; 160238106Sdes cfg->so_rcvbuf = 0; 161238106Sdes cfg->so_sndbuf = 0; 162266114Sdes cfg->so_reuseport = 0; 163287917Sdes cfg->ip_transparent = 0; 164238106Sdes cfg->num_ifs = 0; 165238106Sdes cfg->ifs = NULL; 166238106Sdes cfg->num_out_ifs = 0; 167238106Sdes cfg->out_ifs = NULL; 168238106Sdes cfg->stubs = NULL; 169238106Sdes cfg->forwards = NULL; 170238106Sdes cfg->acls = NULL; 171238106Sdes cfg->harden_short_bufsize = 0; 172238106Sdes cfg->harden_large_queries = 0; 173238106Sdes cfg->harden_glue = 1; 174238106Sdes cfg->harden_dnssec_stripped = 1; 175238106Sdes cfg->harden_below_nxdomain = 0; 176238106Sdes cfg->harden_referral_path = 0; 177289063Sdes cfg->harden_algo_downgrade = 0; 178238106Sdes cfg->use_caps_bits_for_id = 0; 179287917Sdes cfg->caps_whitelist = NULL; 180238106Sdes cfg->private_address = NULL; 181238106Sdes cfg->private_domain = NULL; 182238106Sdes cfg->unwanted_threshold = 0; 183238106Sdes cfg->hide_identity = 0; 184238106Sdes cfg->hide_version = 0; 185238106Sdes cfg->identity = NULL; 186238106Sdes cfg->version = NULL; 187238106Sdes cfg->auto_trust_anchor_file_list = NULL; 188238106Sdes cfg->trust_anchor_file_list = NULL; 189238106Sdes cfg->trust_anchor_list = NULL; 190238106Sdes cfg->trusted_keys_file_list = NULL; 191238106Sdes cfg->dlv_anchor_file = NULL; 192238106Sdes cfg->dlv_anchor_list = NULL; 193238106Sdes cfg->domain_insecure = NULL; 194238106Sdes cfg->val_date_override = 0; 195238106Sdes cfg->val_sig_skew_min = 3600; /* at least daylight savings trouble */ 196238106Sdes cfg->val_sig_skew_max = 86400; /* at most timezone settings trouble */ 197238106Sdes cfg->val_clean_additional = 1; 198238106Sdes cfg->val_log_level = 0; 199238106Sdes cfg->val_log_squelch = 0; 200238106Sdes cfg->val_permissive_mode = 0; 201238106Sdes cfg->ignore_cd = 0; 202238106Sdes cfg->add_holddown = 30*24*3600; 203238106Sdes cfg->del_holddown = 30*24*3600; 204238106Sdes cfg->keep_missing = 366*24*3600; /* one year plus a little leeway */ 205289063Sdes cfg->permit_small_holddown = 0; 206238106Sdes cfg->key_cache_size = 4 * 1024 * 1024; 207238106Sdes cfg->key_cache_slabs = 4; 208238106Sdes cfg->neg_cache_size = 1 * 1024 * 1024; 209238106Sdes cfg->local_zones = NULL; 210238106Sdes cfg->local_zones_nodefault = NULL; 211238106Sdes cfg->local_data = NULL; 212268839Sdes cfg->unblock_lan_zones = 0; 213238106Sdes cfg->python_script = NULL; 214238106Sdes cfg->remote_control_enable = 0; 215238106Sdes cfg->control_ifs = NULL; 216238106Sdes cfg->control_port = UNBOUND_CONTROL_PORT; 217277057Sdes cfg->remote_control_use_cert = 1; 218238106Sdes cfg->minimal_responses = 0; 219238106Sdes cfg->rrset_roundrobin = 0; 220266114Sdes cfg->max_udp_size = 4096; 221238106Sdes if(!(cfg->server_key_file = strdup(RUN_DIR"/unbound_server.key"))) 222238106Sdes goto error_exit; 223238106Sdes if(!(cfg->server_cert_file = strdup(RUN_DIR"/unbound_server.pem"))) 224238106Sdes goto error_exit; 225238106Sdes if(!(cfg->control_key_file = strdup(RUN_DIR"/unbound_control.key"))) 226238106Sdes goto error_exit; 227238106Sdes if(!(cfg->control_cert_file = strdup(RUN_DIR"/unbound_control.pem"))) 228238106Sdes goto error_exit; 229238106Sdes 230238106Sdes if(!(cfg->module_conf = strdup("validator iterator"))) goto error_exit; 231238106Sdes if(!(cfg->val_nsec3_key_iterations = 232238106Sdes strdup("1024 150 2048 500 4096 2500"))) goto error_exit; 233276605Sdes#if defined(DNSTAP_SOCKET_PATH) 234276605Sdes if(!(cfg->dnstap_socket_path = strdup(DNSTAP_SOCKET_PATH))) 235276605Sdes goto error_exit; 236276605Sdes#endif 237287917Sdes cfg->ratelimit = 0; 238287917Sdes cfg->ratelimit_slabs = 4; 239287917Sdes cfg->ratelimit_size = 4*1024*1024; 240287917Sdes cfg->ratelimit_for_domain = NULL; 241287917Sdes cfg->ratelimit_below_domain = NULL; 242287917Sdes cfg->ratelimit_factor = 10; 243238106Sdes return cfg; 244238106Sdeserror_exit: 245238106Sdes config_delete(cfg); 246238106Sdes return NULL; 247238106Sdes} 248238106Sdes 249238106Sdesstruct config_file* config_create_forlib(void) 250238106Sdes{ 251238106Sdes struct config_file* cfg = config_create(); 252238106Sdes if(!cfg) return NULL; 253238106Sdes /* modifications for library use, less verbose, less memory */ 254238106Sdes free(cfg->chrootdir); 255238106Sdes cfg->chrootdir = NULL; 256238106Sdes cfg->verbosity = 0; 257238106Sdes cfg->outgoing_num_ports = 16; /* in library use, this is 'reasonable' 258238106Sdes and probably within the ulimit(maxfds) of the user */ 259238106Sdes cfg->outgoing_num_tcp = 2; 260238106Sdes cfg->msg_cache_size = 1024*1024; 261238106Sdes cfg->msg_cache_slabs = 1; 262238106Sdes cfg->rrset_cache_size = 1024*1024; 263238106Sdes cfg->rrset_cache_slabs = 1; 264238106Sdes cfg->infra_cache_slabs = 1; 265238106Sdes cfg->use_syslog = 0; 266238106Sdes cfg->key_cache_size = 1024*1024; 267238106Sdes cfg->key_cache_slabs = 1; 268238106Sdes cfg->neg_cache_size = 100 * 1024; 269238106Sdes cfg->donotquery_localhost = 0; /* allow, so that you can ask a 270238106Sdes forward nameserver running on localhost */ 271238106Sdes cfg->val_log_level = 2; /* to fill why_bogus with */ 272238106Sdes cfg->val_log_squelch = 1; 273238106Sdes return cfg; 274238106Sdes} 275238106Sdes 276238106Sdes/** check that the value passed is >= 0 */ 277238106Sdes#define IS_NUMBER_OR_ZERO \ 278238106Sdes if(atoi(val) == 0 && strcmp(val, "0") != 0) return 0 279238106Sdes/** check that the value passed is > 0 */ 280238106Sdes#define IS_NONZERO_NUMBER \ 281238106Sdes if(atoi(val) == 0) return 0 282238106Sdes/** check that the value passed is not 0 and a power of 2 */ 283238106Sdes#define IS_POW2_NUMBER \ 284238106Sdes if(atoi(val) == 0 || !is_pow2((size_t)atoi(val))) return 0 285238106Sdes/** check that the value passed is yes or no */ 286238106Sdes#define IS_YES_OR_NO \ 287238106Sdes if(strcmp(val, "yes") != 0 && strcmp(val, "no") != 0) return 0 288238106Sdes/** put integer_or_zero into variable */ 289238106Sdes#define S_NUMBER_OR_ZERO(str, var) if(strcmp(opt, str) == 0) \ 290238106Sdes { IS_NUMBER_OR_ZERO; cfg->var = atoi(val); } 291238106Sdes/** put integer_nonzero into variable */ 292238106Sdes#define S_NUMBER_NONZERO(str, var) if(strcmp(opt, str) == 0) \ 293238106Sdes { IS_NONZERO_NUMBER; cfg->var = atoi(val); } 294238106Sdes/** put integer_or_zero into unsigned */ 295238106Sdes#define S_UNSIGNED_OR_ZERO(str, var) if(strcmp(opt, str) == 0) \ 296238106Sdes { IS_NUMBER_OR_ZERO; cfg->var = (unsigned)atoi(val); } 297238106Sdes/** put integer_or_zero into size_t */ 298238106Sdes#define S_SIZET_OR_ZERO(str, var) if(strcmp(opt, str) == 0) \ 299238106Sdes { IS_NUMBER_OR_ZERO; cfg->var = (size_t)atoi(val); } 300238106Sdes/** put integer_nonzero into size_t */ 301238106Sdes#define S_SIZET_NONZERO(str, var) if(strcmp(opt, str) == 0) \ 302238106Sdes { IS_NONZERO_NUMBER; cfg->var = (size_t)atoi(val); } 303238106Sdes/** put yesno into variable */ 304238106Sdes#define S_YNO(str, var) if(strcmp(opt, str) == 0) \ 305238106Sdes { IS_YES_OR_NO; cfg->var = (strcmp(val, "yes") == 0); } 306238106Sdes/** put memsize into variable */ 307238106Sdes#define S_MEMSIZE(str, var) if(strcmp(opt, str)==0) \ 308238106Sdes { return cfg_parse_memsize(val, &cfg->var); } 309238106Sdes/** put pow2 number into variable */ 310238106Sdes#define S_POW2(str, var) if(strcmp(opt, str)==0) \ 311238106Sdes { IS_POW2_NUMBER; cfg->var = (size_t)atoi(val); } 312238106Sdes/** put string into variable */ 313238106Sdes#define S_STR(str, var) if(strcmp(opt, str)==0) \ 314238106Sdes { free(cfg->var); return (cfg->var = strdup(val)) != NULL; } 315238106Sdes/** put string into strlist */ 316238106Sdes#define S_STRLIST(str, var) if(strcmp(opt, str)==0) \ 317238106Sdes { return cfg_strlist_insert(&cfg->var, strdup(val)); } 318238106Sdes 319238106Sdesint config_set_option(struct config_file* cfg, const char* opt, 320249141Sdes const char* val) 321238106Sdes{ 322238106Sdes S_NUMBER_OR_ZERO("verbosity:", verbosity) 323238106Sdes else if(strcmp(opt, "statistics-interval:") == 0) { 324238106Sdes if(strcmp(val, "0") == 0 || strcmp(val, "") == 0) 325238106Sdes cfg->stat_interval = 0; 326238106Sdes else if(atoi(val) == 0) 327238106Sdes return 0; 328238106Sdes else cfg->stat_interval = atoi(val); 329238106Sdes } else if(strcmp(opt, "num_threads:") == 0) { 330238106Sdes /* not supported, library must have 1 thread in bgworker */ 331238106Sdes return 0; 332238106Sdes } else if(strcmp(opt, "outgoing-port-permit:") == 0) { 333238106Sdes return cfg_mark_ports(val, 1, 334238106Sdes cfg->outgoing_avail_ports, 65536); 335238106Sdes } else if(strcmp(opt, "outgoing-port-avoid:") == 0) { 336238106Sdes return cfg_mark_ports(val, 0, 337238106Sdes cfg->outgoing_avail_ports, 65536); 338238106Sdes } else if(strcmp(opt, "local-zone:") == 0) { 339238106Sdes return cfg_parse_local_zone(cfg, val); 340238106Sdes } else if(strcmp(opt, "val-override-date:") == 0) { 341238106Sdes if(strcmp(val, "") == 0 || strcmp(val, "0") == 0) { 342238106Sdes cfg->val_date_override = 0; 343238106Sdes } else if(strlen(val) == 14) { 344238106Sdes cfg->val_date_override = cfg_convert_timeval(val); 345238106Sdes return cfg->val_date_override != 0; 346238106Sdes } else { 347238106Sdes if(atoi(val) == 0) return 0; 348238106Sdes cfg->val_date_override = (uint32_t)atoi(val); 349238106Sdes } 350238106Sdes } else if(strcmp(opt, "local-data-ptr:") == 0) { 351238106Sdes char* ptr = cfg_ptr_reverse((char*)opt); 352238106Sdes return cfg_strlist_insert(&cfg->local_data, ptr); 353238106Sdes } else if(strcmp(opt, "logfile:") == 0) { 354238106Sdes cfg->use_syslog = 0; 355238106Sdes free(cfg->logfile); 356238106Sdes return (cfg->logfile = strdup(val)) != NULL; 357266114Sdes } 358266114Sdes else if(strcmp(opt, "log-time-ascii:") == 0) 359266114Sdes { IS_YES_OR_NO; cfg->log_time_ascii = (strcmp(val, "yes") == 0); 360266114Sdes log_set_time_asc(cfg->log_time_ascii); } 361266114Sdes else S_SIZET_NONZERO("max-udp-size:", max_udp_size) 362238106Sdes else S_YNO("use-syslog:", use_syslog) 363238106Sdes else S_YNO("extended-statistics:", stat_extended) 364238106Sdes else S_YNO("statistics-cumulative:", stat_cumulative) 365238106Sdes else S_YNO("do-ip4:", do_ip4) 366238106Sdes else S_YNO("do-ip6:", do_ip6) 367238106Sdes else S_YNO("do-udp:", do_udp) 368238106Sdes else S_YNO("do-tcp:", do_tcp) 369238106Sdes else S_YNO("tcp-upstream:", tcp_upstream) 370238106Sdes else S_YNO("ssl-upstream:", ssl_upstream) 371238106Sdes else S_STR("ssl-service-key:", ssl_service_key) 372238106Sdes else S_STR("ssl-service-pem:", ssl_service_pem) 373238106Sdes else S_NUMBER_NONZERO("ssl-port:", ssl_port) 374238106Sdes else S_YNO("interface-automatic:", if_automatic) 375238106Sdes else S_YNO("do-daemonize:", do_daemonize) 376238106Sdes else S_NUMBER_NONZERO("port:", port) 377238106Sdes else S_NUMBER_NONZERO("outgoing-range:", outgoing_num_ports) 378238106Sdes else S_SIZET_OR_ZERO("outgoing-num-tcp:", outgoing_num_tcp) 379238106Sdes else S_SIZET_OR_ZERO("incoming-num-tcp:", incoming_num_tcp) 380238106Sdes else S_SIZET_NONZERO("edns-buffer-size:", edns_buffer_size) 381238106Sdes else S_SIZET_NONZERO("msg-buffer-size:", msg_buffer_size) 382238106Sdes else S_MEMSIZE("msg-cache-size:", msg_cache_size) 383238106Sdes else S_POW2("msg-cache-slabs:", msg_cache_slabs) 384238106Sdes else S_SIZET_NONZERO("num-queries-per-thread:",num_queries_per_thread) 385238106Sdes else S_SIZET_OR_ZERO("jostle-timeout:", jostle_time) 386238106Sdes else S_MEMSIZE("so-rcvbuf:", so_rcvbuf) 387238106Sdes else S_MEMSIZE("so-sndbuf:", so_sndbuf) 388266114Sdes else S_YNO("so-reuseport:", so_reuseport) 389287917Sdes else S_YNO("ip-transparent:", ip_transparent) 390238106Sdes else S_MEMSIZE("rrset-cache-size:", rrset_cache_size) 391238106Sdes else S_POW2("rrset-cache-slabs:", rrset_cache_slabs) 392238106Sdes else S_YNO("prefetch:", prefetch) 393238106Sdes else S_YNO("prefetch-key:", prefetch_key) 394266114Sdes else if(strcmp(opt, "cache-max-ttl:") == 0) 395266114Sdes { IS_NUMBER_OR_ZERO; cfg->max_ttl = atoi(val); MAX_TTL=(time_t)cfg->max_ttl;} 396287917Sdes else if(strcmp(opt, "cache-max-negative-ttl:") == 0) 397287917Sdes { IS_NUMBER_OR_ZERO; cfg->max_negative_ttl = atoi(val); MAX_NEG_TTL=(time_t)cfg->max_negative_ttl;} 398266114Sdes else if(strcmp(opt, "cache-min-ttl:") == 0) 399266114Sdes { IS_NUMBER_OR_ZERO; cfg->min_ttl = atoi(val); MIN_TTL=(time_t)cfg->min_ttl;} 400282089Sdes else if(strcmp(opt, "infra-cache-min-rtt:") == 0) { 401282089Sdes IS_NUMBER_OR_ZERO; cfg->infra_cache_min_rtt = atoi(val); 402282089Sdes RTT_MIN_TIMEOUT=cfg->infra_cache_min_rtt; 403282089Sdes } 404238106Sdes else S_NUMBER_OR_ZERO("infra-host-ttl:", host_ttl) 405238106Sdes else S_POW2("infra-cache-slabs:", infra_cache_slabs) 406238106Sdes else S_SIZET_NONZERO("infra-cache-numhosts:", infra_cache_numhosts) 407266114Sdes else S_NUMBER_OR_ZERO("delay-close:", delay_close) 408238106Sdes else S_STR("chroot:", chrootdir) 409238106Sdes else S_STR("username:", username) 410238106Sdes else S_STR("directory:", directory) 411238106Sdes else S_STR("pidfile:", pidfile) 412238106Sdes else S_YNO("hide-identity:", hide_identity) 413238106Sdes else S_YNO("hide-version:", hide_version) 414238106Sdes else S_STR("identity:", identity) 415238106Sdes else S_STR("version:", version) 416238106Sdes else S_STRLIST("root-hints:", root_hints) 417238106Sdes else S_STR("target-fetch-policy:", target_fetch_policy) 418238106Sdes else S_YNO("harden-glue:", harden_glue) 419238106Sdes else S_YNO("harden-short-bufsize:", harden_short_bufsize) 420238106Sdes else S_YNO("harden-large-queries:", harden_large_queries) 421238106Sdes else S_YNO("harden-dnssec-stripped:", harden_dnssec_stripped) 422238106Sdes else S_YNO("harden-below-nxdomain:", harden_below_nxdomain) 423238106Sdes else S_YNO("harden-referral-path:", harden_referral_path) 424287917Sdes else S_YNO("harden-algo-downgrade:", harden_algo_downgrade) 425238106Sdes else S_YNO("use-caps-for-id", use_caps_bits_for_id) 426287917Sdes else S_STRLIST("caps-whitelist:", caps_whitelist) 427238106Sdes else S_SIZET_OR_ZERO("unwanted-reply-threshold:", unwanted_threshold) 428238106Sdes else S_STRLIST("private-address:", private_address) 429238106Sdes else S_STRLIST("private-domain:", private_domain) 430238106Sdes else S_YNO("do-not-query-localhost:", donotquery_localhost) 431238106Sdes else S_STRLIST("do-not-query-address:", donotqueryaddrs) 432238106Sdes else S_STRLIST("auto-trust-anchor-file:", auto_trust_anchor_file_list) 433238106Sdes else S_STRLIST("trust-anchor-file:", trust_anchor_file_list) 434238106Sdes else S_STRLIST("trust-anchor:", trust_anchor_list) 435238106Sdes else S_STRLIST("trusted-keys-file:", trusted_keys_file_list) 436238106Sdes else S_STR("dlv-anchor-file:", dlv_anchor_file) 437238106Sdes else S_STRLIST("dlv-anchor:", dlv_anchor_list) 438238106Sdes else S_STRLIST("domain-insecure:", domain_insecure) 439238106Sdes else S_NUMBER_OR_ZERO("val-bogus-ttl:", bogus_ttl) 440238106Sdes else S_YNO("val-clean-additional:", val_clean_additional) 441238106Sdes else S_NUMBER_OR_ZERO("val-log-level:", val_log_level) 442238106Sdes else S_YNO("val-log-squelch:", val_log_squelch) 443238106Sdes else S_YNO("log-queries:", log_queries) 444238106Sdes else S_YNO("val-permissive-mode:", val_permissive_mode) 445238106Sdes else S_YNO("ignore-cd-flag:", ignore_cd) 446238106Sdes else S_STR("val-nsec3-keysize-iterations:", val_nsec3_key_iterations) 447238106Sdes else S_UNSIGNED_OR_ZERO("add-holddown:", add_holddown) 448238106Sdes else S_UNSIGNED_OR_ZERO("del-holddown:", del_holddown) 449238106Sdes else S_UNSIGNED_OR_ZERO("keep-missing:", keep_missing) 450289063Sdes else if(strcmp(opt, "permit-small-holddown:") == 0) 451289063Sdes { IS_YES_OR_NO; cfg->permit_small_holddown = (strcmp(val, "yes") == 0); 452289063Sdes autr_permit_small_holddown = cfg->permit_small_holddown; } 453238106Sdes else S_MEMSIZE("key-cache-size:", key_cache_size) 454238106Sdes else S_POW2("key-cache-slabs:", key_cache_slabs) 455238106Sdes else S_MEMSIZE("neg-cache-size:", neg_cache_size) 456238106Sdes else S_YNO("minimal-responses:", minimal_responses) 457238106Sdes else S_YNO("rrset-roundrobin:", rrset_roundrobin) 458238106Sdes else S_STRLIST("local-data:", local_data) 459268839Sdes else S_YNO("unblock-lan-zones:", unblock_lan_zones) 460238106Sdes else S_YNO("control-enable:", remote_control_enable) 461238106Sdes else S_STRLIST("control-interface:", control_ifs) 462238106Sdes else S_NUMBER_NONZERO("control-port:", control_port) 463238106Sdes else S_STR("server-key-file:", server_key_file) 464238106Sdes else S_STR("server-cert-file:", server_cert_file) 465238106Sdes else S_STR("control-key-file:", control_key_file) 466238106Sdes else S_STR("control-cert-file:", control_cert_file) 467238106Sdes else S_STR("module-config:", module_conf) 468238106Sdes else S_STR("python-script:", python_script) 469287917Sdes else if(strcmp(opt, "ratelimit:") == 0) { 470287917Sdes IS_NUMBER_OR_ZERO; cfg->ratelimit = atoi(val); 471287917Sdes infra_dp_ratelimit=cfg->ratelimit; 472287917Sdes } 473287917Sdes else S_MEMSIZE("ratelimit-size:", ratelimit_size) 474287917Sdes else S_POW2("ratelimit-slabs:", ratelimit_slabs) 475287917Sdes else S_NUMBER_OR_ZERO("ratelimit-factor:", ratelimit_factor) 476266114Sdes /* val_sig_skew_min and max are copied into val_env during init, 477266114Sdes * so this does not update val_env with set_option */ 478266114Sdes else if(strcmp(opt, "val-sig-skew-min:") == 0) 479266114Sdes { IS_NUMBER_OR_ZERO; cfg->val_sig_skew_min = (int32_t)atoi(val); } 480266114Sdes else if(strcmp(opt, "val-sig-skew-max:") == 0) 481266114Sdes { IS_NUMBER_OR_ZERO; cfg->val_sig_skew_max = (int32_t)atoi(val); } 482238106Sdes else if (strcmp(opt, "outgoing-interface:") == 0) { 483238106Sdes char* d = strdup(val); 484287917Sdes char** oi = 485287917Sdes (char**)reallocarray(NULL, (size_t)cfg->num_out_ifs+1, sizeof(char*)); 486238106Sdes if(!d || !oi) { free(d); free(oi); return -1; } 487238106Sdes if(cfg->out_ifs && cfg->num_out_ifs) { 488238106Sdes memmove(oi, cfg->out_ifs, cfg->num_out_ifs*sizeof(char*)); 489238106Sdes free(cfg->out_ifs); 490238106Sdes } 491238106Sdes oi[cfg->num_out_ifs++] = d; 492238106Sdes cfg->out_ifs = oi; 493238106Sdes } else { 494238106Sdes /* unknown or unsupported (from the set_option interface): 495238106Sdes * interface, outgoing-interface, access-control, 496238106Sdes * stub-zone, name, stub-addr, stub-host, stub-prime 497238106Sdes * forward-first, stub-first, 498287917Sdes * forward-zone, name, forward-addr, forward-host, 499287917Sdes * ratelimit-for-domain, ratelimit-below-domain */ 500238106Sdes return 0; 501238106Sdes } 502238106Sdes return 1; 503238106Sdes} 504238106Sdes 505238106Sdesvoid config_print_func(char* line, void* arg) 506238106Sdes{ 507238106Sdes FILE* f = (FILE*)arg; 508238106Sdes (void)fprintf(f, "%s\n", line); 509238106Sdes} 510238106Sdes 511238106Sdes/** collate func arg */ 512238106Sdesstruct config_collate_arg { 513238106Sdes /** list of result items */ 514238106Sdes struct config_strlist_head list; 515238106Sdes /** if a malloc error occurred, 0 is OK */ 516238106Sdes int status; 517238106Sdes}; 518238106Sdes 519238106Sdesvoid config_collate_func(char* line, void* arg) 520238106Sdes{ 521238106Sdes struct config_collate_arg* m = (struct config_collate_arg*)arg; 522238106Sdes if(m->status) 523238106Sdes return; 524238106Sdes if(!cfg_strlist_append(&m->list, strdup(line))) 525238106Sdes m->status = 1; 526238106Sdes} 527238106Sdes 528238106Sdesint config_get_option_list(struct config_file* cfg, const char* opt, 529249141Sdes struct config_strlist** list) 530238106Sdes{ 531238106Sdes struct config_collate_arg m; 532238106Sdes memset(&m, 0, sizeof(m)); 533238106Sdes *list = NULL; 534238106Sdes if(!config_get_option(cfg, opt, config_collate_func, &m)) 535238106Sdes return 1; 536238106Sdes if(m.status) { 537238106Sdes config_delstrlist(m.list.first); 538238106Sdes return 2; 539238106Sdes } 540238106Sdes *list = m.list.first; 541238106Sdes return 0; 542238106Sdes} 543238106Sdes 544238106Sdesint 545238106Sdesconfig_get_option_collate(struct config_file* cfg, const char* opt, char** str) 546238106Sdes{ 547238106Sdes struct config_strlist* list = NULL; 548238106Sdes int r; 549238106Sdes *str = NULL; 550238106Sdes if((r = config_get_option_list(cfg, opt, &list)) != 0) 551238106Sdes return r; 552238106Sdes *str = config_collate_cat(list); 553238106Sdes config_delstrlist(list); 554238106Sdes if(!*str) return 2; 555238106Sdes return 0; 556238106Sdes} 557238106Sdes 558238106Sdeschar* 559238106Sdesconfig_collate_cat(struct config_strlist* list) 560238106Sdes{ 561238106Sdes size_t total = 0, left; 562238106Sdes struct config_strlist* s; 563238106Sdes char *r, *w; 564238106Sdes if(!list) /* no elements */ 565238106Sdes return strdup(""); 566238106Sdes if(list->next == NULL) /* one element , no newline at end. */ 567238106Sdes return strdup(list->str); 568238106Sdes /* count total length */ 569238106Sdes for(s=list; s; s=s->next) 570238106Sdes total += strlen(s->str) + 1; /* len + newline */ 571238106Sdes left = total+1; /* one extra for nul at end */ 572238106Sdes r = malloc(left); 573238106Sdes if(!r) 574238106Sdes return NULL; 575238106Sdes w = r; 576238106Sdes for(s=list; s; s=s->next) { 577238106Sdes size_t this = strlen(s->str); 578238106Sdes if(this+2 > left) { /* sanity check */ 579238106Sdes free(r); 580238106Sdes return NULL; 581238106Sdes } 582238106Sdes snprintf(w, left, "%s\n", s->str); 583266114Sdes this = strlen(w); 584266114Sdes w += this; 585266114Sdes left -= this; 586238106Sdes } 587238106Sdes return r; 588238106Sdes} 589238106Sdes 590238106Sdes/** compare and print decimal option */ 591238106Sdes#define O_DEC(opt, str, var) if(strcmp(opt, str)==0) \ 592238106Sdes {snprintf(buf, len, "%d", (int)cfg->var); \ 593238106Sdes func(buf, arg);} 594238106Sdes/** compare and print unsigned option */ 595238106Sdes#define O_UNS(opt, str, var) if(strcmp(opt, str)==0) \ 596238106Sdes {snprintf(buf, len, "%u", (unsigned)cfg->var); \ 597238106Sdes func(buf, arg);} 598238106Sdes/** compare and print yesno option */ 599238106Sdes#define O_YNO(opt, str, var) if(strcmp(opt, str)==0) \ 600238106Sdes {func(cfg->var?"yes":"no", arg);} 601238106Sdes/** compare and print string option */ 602238106Sdes#define O_STR(opt, str, var) if(strcmp(opt, str)==0) \ 603238106Sdes {func(cfg->var?cfg->var:"", arg);} 604238106Sdes/** compare and print array option */ 605238106Sdes#define O_IFC(opt, str, num, arr) if(strcmp(opt, str)==0) \ 606238106Sdes {int i; for(i=0; i<cfg->num; i++) func(cfg->arr[i], arg);} 607238106Sdes/** compare and print memorysize option */ 608238106Sdes#define O_MEM(opt, str, var) if(strcmp(opt, str)==0) { \ 609238106Sdes if(cfg->var > 1024*1024*1024) { \ 610238106Sdes size_t f=cfg->var/(size_t)1000000, b=cfg->var%(size_t)1000000; \ 611287917Sdes snprintf(buf, len, "%u%6.6u", (unsigned)f, (unsigned)b); \ 612287917Sdes } else snprintf(buf, len, "%u", (unsigned)cfg->var); \ 613238106Sdes func(buf, arg);} 614238106Sdes/** compare and print list option */ 615238106Sdes#define O_LST(opt, name, lst) if(strcmp(opt, name)==0) { \ 616238106Sdes struct config_strlist* p = cfg->lst; \ 617238106Sdes for(p = cfg->lst; p; p = p->next) \ 618238106Sdes func(p->str, arg); \ 619238106Sdes } 620238106Sdes/** compare and print list option */ 621238106Sdes#define O_LS2(opt, name, lst) if(strcmp(opt, name)==0) { \ 622238106Sdes struct config_str2list* p = cfg->lst; \ 623238106Sdes for(p = cfg->lst; p; p = p->next) \ 624238106Sdes snprintf(buf, len, "%s %s\n", p->str, p->str2); \ 625238106Sdes func(buf, arg); \ 626238106Sdes } 627238106Sdes 628238106Sdesint 629238106Sdesconfig_get_option(struct config_file* cfg, const char* opt, 630238106Sdes void (*func)(char*,void*), void* arg) 631238106Sdes{ 632238106Sdes char buf[1024]; 633238106Sdes size_t len = sizeof(buf); 634238106Sdes fptr_ok(fptr_whitelist_print_func(func)); 635238106Sdes O_DEC(opt, "verbosity", verbosity) 636238106Sdes else O_DEC(opt, "statistics-interval", stat_interval) 637238106Sdes else O_YNO(opt, "statistics-cumulative", stat_cumulative) 638238106Sdes else O_YNO(opt, "extended-statistics", stat_extended) 639238106Sdes else O_YNO(opt, "use-syslog", use_syslog) 640266114Sdes else O_YNO(opt, "log-time-ascii", log_time_ascii) 641238106Sdes else O_DEC(opt, "num-threads", num_threads) 642238106Sdes else O_IFC(opt, "interface", num_ifs, ifs) 643238106Sdes else O_IFC(opt, "outgoing-interface", num_out_ifs, out_ifs) 644238106Sdes else O_YNO(opt, "interface-automatic", if_automatic) 645238106Sdes else O_DEC(opt, "port", port) 646238106Sdes else O_DEC(opt, "outgoing-range", outgoing_num_ports) 647238106Sdes else O_DEC(opt, "outgoing-num-tcp", outgoing_num_tcp) 648238106Sdes else O_DEC(opt, "incoming-num-tcp", incoming_num_tcp) 649238106Sdes else O_DEC(opt, "edns-buffer-size", edns_buffer_size) 650238106Sdes else O_DEC(opt, "msg-buffer-size", msg_buffer_size) 651238106Sdes else O_MEM(opt, "msg-cache-size", msg_cache_size) 652238106Sdes else O_DEC(opt, "msg-cache-slabs", msg_cache_slabs) 653238106Sdes else O_DEC(opt, "num-queries-per-thread", num_queries_per_thread) 654238106Sdes else O_UNS(opt, "jostle-timeout", jostle_time) 655238106Sdes else O_MEM(opt, "so-rcvbuf", so_rcvbuf) 656238106Sdes else O_MEM(opt, "so-sndbuf", so_sndbuf) 657266114Sdes else O_YNO(opt, "so-reuseport", so_reuseport) 658287917Sdes else O_YNO(opt, "ip-transparent", ip_transparent) 659238106Sdes else O_MEM(opt, "rrset-cache-size", rrset_cache_size) 660238106Sdes else O_DEC(opt, "rrset-cache-slabs", rrset_cache_slabs) 661238106Sdes else O_YNO(opt, "prefetch-key", prefetch_key) 662238106Sdes else O_YNO(opt, "prefetch", prefetch) 663238106Sdes else O_DEC(opt, "cache-max-ttl", max_ttl) 664287917Sdes else O_DEC(opt, "cache-max-negative-ttl", max_negative_ttl) 665266114Sdes else O_DEC(opt, "cache-min-ttl", min_ttl) 666238106Sdes else O_DEC(opt, "infra-host-ttl", host_ttl) 667238106Sdes else O_DEC(opt, "infra-cache-slabs", infra_cache_slabs) 668282089Sdes else O_DEC(opt, "infra-cache-min-rtt", infra_cache_min_rtt) 669238106Sdes else O_MEM(opt, "infra-cache-numhosts", infra_cache_numhosts) 670266114Sdes else O_UNS(opt, "delay-close", delay_close) 671238106Sdes else O_YNO(opt, "do-ip4", do_ip4) 672238106Sdes else O_YNO(opt, "do-ip6", do_ip6) 673238106Sdes else O_YNO(opt, "do-udp", do_udp) 674238106Sdes else O_YNO(opt, "do-tcp", do_tcp) 675238106Sdes else O_YNO(opt, "tcp-upstream", tcp_upstream) 676238106Sdes else O_YNO(opt, "ssl-upstream", ssl_upstream) 677238106Sdes else O_STR(opt, "ssl-service-key", ssl_service_key) 678238106Sdes else O_STR(opt, "ssl-service-pem", ssl_service_pem) 679238106Sdes else O_DEC(opt, "ssl-port", ssl_port) 680238106Sdes else O_YNO(opt, "do-daemonize", do_daemonize) 681238106Sdes else O_STR(opt, "chroot", chrootdir) 682238106Sdes else O_STR(opt, "username", username) 683238106Sdes else O_STR(opt, "directory", directory) 684238106Sdes else O_STR(opt, "logfile", logfile) 685238106Sdes else O_YNO(opt, "log-queries", log_queries) 686238106Sdes else O_STR(opt, "pidfile", pidfile) 687238106Sdes else O_YNO(opt, "hide-identity", hide_identity) 688238106Sdes else O_YNO(opt, "hide-version", hide_version) 689238106Sdes else O_STR(opt, "identity", identity) 690238106Sdes else O_STR(opt, "version", version) 691238106Sdes else O_STR(opt, "target-fetch-policy", target_fetch_policy) 692238106Sdes else O_YNO(opt, "harden-short-bufsize", harden_short_bufsize) 693238106Sdes else O_YNO(opt, "harden-large-queries", harden_large_queries) 694238106Sdes else O_YNO(opt, "harden-glue", harden_glue) 695238106Sdes else O_YNO(opt, "harden-dnssec-stripped", harden_dnssec_stripped) 696238106Sdes else O_YNO(opt, "harden-below-nxdomain", harden_below_nxdomain) 697238106Sdes else O_YNO(opt, "harden-referral-path", harden_referral_path) 698287917Sdes else O_YNO(opt, "harden-algo-downgrade", harden_algo_downgrade) 699238106Sdes else O_YNO(opt, "use-caps-for-id", use_caps_bits_for_id) 700287917Sdes else O_LST(opt, "caps-whitelist", caps_whitelist) 701238106Sdes else O_DEC(opt, "unwanted-reply-threshold", unwanted_threshold) 702238106Sdes else O_YNO(opt, "do-not-query-localhost", donotquery_localhost) 703238106Sdes else O_STR(opt, "module-config", module_conf) 704238106Sdes else O_STR(opt, "dlv-anchor-file", dlv_anchor_file) 705238106Sdes else O_DEC(opt, "val-bogus-ttl", bogus_ttl) 706238106Sdes else O_YNO(opt, "val-clean-additional", val_clean_additional) 707238106Sdes else O_DEC(opt, "val-log-level", val_log_level) 708238106Sdes else O_YNO(opt, "val-permissive-mode", val_permissive_mode) 709238106Sdes else O_YNO(opt, "ignore-cd-flag", ignore_cd) 710238106Sdes else O_STR(opt, "val-nsec3-keysize-iterations",val_nsec3_key_iterations) 711238106Sdes else O_UNS(opt, "add-holddown", add_holddown) 712238106Sdes else O_UNS(opt, "del-holddown", del_holddown) 713238106Sdes else O_UNS(opt, "keep-missing", keep_missing) 714289063Sdes else O_YNO(opt, "permit-small-holddown", permit_small_holddown) 715238106Sdes else O_MEM(opt, "key-cache-size", key_cache_size) 716238106Sdes else O_DEC(opt, "key-cache-slabs", key_cache_slabs) 717238106Sdes else O_MEM(opt, "neg-cache-size", neg_cache_size) 718238106Sdes else O_YNO(opt, "control-enable", remote_control_enable) 719238106Sdes else O_DEC(opt, "control-port", control_port) 720238106Sdes else O_STR(opt, "server-key-file", server_key_file) 721238106Sdes else O_STR(opt, "server-cert-file", server_cert_file) 722238106Sdes else O_STR(opt, "control-key-file", control_key_file) 723238106Sdes else O_STR(opt, "control-cert-file", control_cert_file) 724238106Sdes else O_LST(opt, "root-hints", root_hints) 725238106Sdes else O_LS2(opt, "access-control", acls) 726238106Sdes else O_LST(opt, "do-not-query-address", donotqueryaddrs) 727238106Sdes else O_LST(opt, "private-address", private_address) 728238106Sdes else O_LST(opt, "private-domain", private_domain) 729238106Sdes else O_LST(opt, "auto-trust-anchor-file", auto_trust_anchor_file_list) 730238106Sdes else O_LST(opt, "trust-anchor-file", trust_anchor_file_list) 731238106Sdes else O_LST(opt, "trust-anchor", trust_anchor_list) 732238106Sdes else O_LST(opt, "trusted-keys-file", trusted_keys_file_list) 733238106Sdes else O_LST(opt, "dlv-anchor", dlv_anchor_list) 734238106Sdes else O_LST(opt, "control-interface", control_ifs) 735238106Sdes else O_LST(opt, "domain-insecure", domain_insecure) 736238106Sdes else O_UNS(opt, "val-override-date", val_date_override) 737238106Sdes else O_YNO(opt, "minimal-responses", minimal_responses) 738238106Sdes else O_YNO(opt, "rrset-roundrobin", rrset_roundrobin) 739268839Sdes else O_YNO(opt, "unblock-lan-zones", unblock_lan_zones) 740266114Sdes else O_DEC(opt, "max-udp-size", max_udp_size) 741266114Sdes else O_STR(opt, "python-script", python_script) 742287917Sdes else O_DEC(opt, "ratelimit", ratelimit) 743287917Sdes else O_MEM(opt, "ratelimit-size", ratelimit_size) 744287917Sdes else O_DEC(opt, "ratelimit-slabs", ratelimit_slabs) 745287917Sdes else O_LS2(opt, "ratelimit-for-domain", ratelimit_for_domain) 746287917Sdes else O_LS2(opt, "ratelimit-below-domain", ratelimit_below_domain) 747287917Sdes else O_DEC(opt, "ratelimit-factor", ratelimit_factor) 748266114Sdes else O_DEC(opt, "val-sig-skew-min", val_sig_skew_min) 749266114Sdes else O_DEC(opt, "val-sig-skew-max", val_sig_skew_max) 750238106Sdes /* not here: 751238106Sdes * outgoing-permit, outgoing-avoid - have list of ports 752238106Sdes * local-zone - zones and nodefault variables 753238106Sdes * local-data - see below 754238106Sdes * local-data-ptr - converted to local-data entries 755238106Sdes * stub-zone, name, stub-addr, stub-host, stub-prime 756238106Sdes * forward-zone, name, forward-addr, forward-host 757238106Sdes */ 758238106Sdes else return 0; 759238106Sdes return 1; 760238106Sdes} 761238106Sdes 762238106Sdes/** initialize the global cfg_parser object */ 763238106Sdesstatic void 764238106Sdescreate_cfg_parser(struct config_file* cfg, char* filename, const char* chroot) 765238106Sdes{ 766238106Sdes static struct config_parser_state st; 767238106Sdes cfg_parser = &st; 768238106Sdes cfg_parser->filename = filename; 769238106Sdes cfg_parser->line = 1; 770238106Sdes cfg_parser->errors = 0; 771238106Sdes cfg_parser->cfg = cfg; 772238106Sdes cfg_parser->chroot = chroot; 773266114Sdes init_cfg_parse(); 774238106Sdes} 775238106Sdes 776238106Sdesint 777238106Sdesconfig_read(struct config_file* cfg, const char* filename, const char* chroot) 778238106Sdes{ 779238106Sdes FILE *in; 780238106Sdes char *fname = (char*)filename; 781249141Sdes#ifdef HAVE_GLOB 782249141Sdes glob_t g; 783249141Sdes size_t i; 784249141Sdes int r, flags; 785249141Sdes#endif 786238106Sdes if(!fname) 787238106Sdes return 1; 788249141Sdes 789249141Sdes /* check for wildcards */ 790249141Sdes#ifdef HAVE_GLOB 791249141Sdes if(!(!strchr(fname, '*') && !strchr(fname, '?') && !strchr(fname, '[') && 792249141Sdes !strchr(fname, '{') && !strchr(fname, '~'))) { 793249141Sdes verbose(VERB_QUERY, "wildcard found, processing %s", fname); 794249141Sdes flags = 0 795249141Sdes#ifdef GLOB_ERR 796249141Sdes | GLOB_ERR 797249141Sdes#endif 798249141Sdes#ifdef GLOB_NOSORT 799249141Sdes | GLOB_NOSORT 800249141Sdes#endif 801249141Sdes#ifdef GLOB_BRACE 802249141Sdes | GLOB_BRACE 803249141Sdes#endif 804249141Sdes#ifdef GLOB_TILDE 805249141Sdes | GLOB_TILDE 806249141Sdes#endif 807249141Sdes ; 808249141Sdes memset(&g, 0, sizeof(g)); 809249141Sdes r = glob(fname, flags, NULL, &g); 810249141Sdes if(r) { 811249141Sdes /* some error */ 812249141Sdes globfree(&g); 813249141Sdes if(r == GLOB_NOMATCH) { 814249141Sdes verbose(VERB_QUERY, "include: " 815249141Sdes "no matches for %s", fname); 816249141Sdes return 1; 817249141Sdes } else if(r == GLOB_NOSPACE) { 818249141Sdes log_err("include: %s: " 819249141Sdes "fnametern out of memory", fname); 820249141Sdes } else if(r == GLOB_ABORTED) { 821249141Sdes log_err("wildcard include: %s: expansion " 822249141Sdes "aborted (%s)", fname, strerror(errno)); 823249141Sdes } else { 824249141Sdes log_err("wildcard include: %s: expansion " 825249141Sdes "failed (%s)", fname, strerror(errno)); 826249141Sdes } 827249141Sdes /* ignore globs that yield no files */ 828249141Sdes return 1; 829249141Sdes } 830249141Sdes /* process files found, if any */ 831249141Sdes for(i=0; i<(size_t)g.gl_pathc; i++) { 832249141Sdes if(!config_read(cfg, g.gl_pathv[i], chroot)) { 833249141Sdes log_err("error reading wildcard " 834249141Sdes "include: %s", g.gl_pathv[i]); 835249141Sdes globfree(&g); 836249141Sdes return 0; 837249141Sdes } 838249141Sdes } 839249141Sdes globfree(&g); 840249141Sdes return 1; 841249141Sdes } 842249141Sdes#endif /* HAVE_GLOB */ 843249141Sdes 844238106Sdes in = fopen(fname, "r"); 845238106Sdes if(!in) { 846238106Sdes log_err("Could not open %s: %s", fname, strerror(errno)); 847238106Sdes return 0; 848238106Sdes } 849238106Sdes create_cfg_parser(cfg, fname, chroot); 850238106Sdes ub_c_in = in; 851238106Sdes ub_c_parse(); 852238106Sdes fclose(in); 853238106Sdes 854238106Sdes if(cfg_parser->errors != 0) { 855238106Sdes fprintf(stderr, "read %s failed: %d errors in configuration file\n", 856276605Sdes fname, cfg_parser->errors); 857238106Sdes errno=EINVAL; 858238106Sdes return 0; 859238106Sdes } 860276699Sdes 861238106Sdes return 1; 862238106Sdes} 863238106Sdes 864238106Sdesvoid 865238106Sdesconfig_delstrlist(struct config_strlist* p) 866238106Sdes{ 867238106Sdes struct config_strlist *np; 868238106Sdes while(p) { 869238106Sdes np = p->next; 870238106Sdes free(p->str); 871238106Sdes free(p); 872238106Sdes p = np; 873238106Sdes } 874238106Sdes} 875238106Sdes 876238106Sdesvoid 877238106Sdesconfig_deldblstrlist(struct config_str2list* p) 878238106Sdes{ 879238106Sdes struct config_str2list *np; 880238106Sdes while(p) { 881238106Sdes np = p->next; 882238106Sdes free(p->str); 883238106Sdes free(p->str2); 884238106Sdes free(p); 885238106Sdes p = np; 886238106Sdes } 887238106Sdes} 888238106Sdes 889238106Sdesvoid 890238106Sdesconfig_delstubs(struct config_stub* p) 891238106Sdes{ 892238106Sdes struct config_stub* np; 893238106Sdes while(p) { 894238106Sdes np = p->next; 895238106Sdes free(p->name); 896238106Sdes config_delstrlist(p->hosts); 897238106Sdes config_delstrlist(p->addrs); 898238106Sdes free(p); 899238106Sdes p = np; 900238106Sdes } 901238106Sdes} 902238106Sdes 903238106Sdesvoid 904238106Sdesconfig_delete(struct config_file* cfg) 905238106Sdes{ 906238106Sdes if(!cfg) return; 907238106Sdes free(cfg->username); 908238106Sdes free(cfg->chrootdir); 909238106Sdes free(cfg->directory); 910238106Sdes free(cfg->logfile); 911238106Sdes free(cfg->pidfile); 912238106Sdes free(cfg->target_fetch_policy); 913238106Sdes free(cfg->ssl_service_key); 914238106Sdes free(cfg->ssl_service_pem); 915238106Sdes if(cfg->ifs) { 916238106Sdes int i; 917238106Sdes for(i=0; i<cfg->num_ifs; i++) 918238106Sdes free(cfg->ifs[i]); 919238106Sdes free(cfg->ifs); 920238106Sdes } 921238106Sdes if(cfg->out_ifs) { 922238106Sdes int i; 923238106Sdes for(i=0; i<cfg->num_out_ifs; i++) 924238106Sdes free(cfg->out_ifs[i]); 925238106Sdes free(cfg->out_ifs); 926238106Sdes } 927238106Sdes config_delstubs(cfg->stubs); 928238106Sdes config_delstubs(cfg->forwards); 929238106Sdes config_delstrlist(cfg->donotqueryaddrs); 930238106Sdes config_delstrlist(cfg->root_hints); 931238106Sdes free(cfg->identity); 932238106Sdes free(cfg->version); 933238106Sdes free(cfg->module_conf); 934238106Sdes free(cfg->outgoing_avail_ports); 935287917Sdes config_delstrlist(cfg->caps_whitelist); 936238106Sdes config_delstrlist(cfg->private_address); 937238106Sdes config_delstrlist(cfg->private_domain); 938238106Sdes config_delstrlist(cfg->auto_trust_anchor_file_list); 939238106Sdes config_delstrlist(cfg->trust_anchor_file_list); 940238106Sdes config_delstrlist(cfg->trusted_keys_file_list); 941238106Sdes config_delstrlist(cfg->trust_anchor_list); 942238106Sdes config_delstrlist(cfg->domain_insecure); 943238106Sdes free(cfg->dlv_anchor_file); 944238106Sdes config_delstrlist(cfg->dlv_anchor_list); 945238106Sdes config_deldblstrlist(cfg->acls); 946238106Sdes free(cfg->val_nsec3_key_iterations); 947238106Sdes config_deldblstrlist(cfg->local_zones); 948238106Sdes config_delstrlist(cfg->local_zones_nodefault); 949238106Sdes config_delstrlist(cfg->local_data); 950238106Sdes config_delstrlist(cfg->control_ifs); 951238106Sdes free(cfg->server_key_file); 952238106Sdes free(cfg->server_cert_file); 953238106Sdes free(cfg->control_key_file); 954238106Sdes free(cfg->control_cert_file); 955287917Sdes free(cfg->dns64_prefix); 956276605Sdes free(cfg->dnstap_socket_path); 957276605Sdes free(cfg->dnstap_identity); 958276605Sdes free(cfg->dnstap_version); 959287917Sdes config_deldblstrlist(cfg->ratelimit_for_domain); 960287917Sdes config_deldblstrlist(cfg->ratelimit_below_domain); 961238106Sdes free(cfg); 962238106Sdes} 963238106Sdes 964238106Sdesstatic void 965238106Sdesinit_outgoing_availports(int* a, int num) 966238106Sdes{ 967238106Sdes /* generated with make iana_update */ 968238106Sdes const int iana_assigned[] = { 969238106Sdes#include "util/iana_ports.inc" 970238106Sdes -1 }; /* end marker to put behind trailing comma */ 971238106Sdes 972238106Sdes int i; 973238106Sdes /* do not use <1024, that could be trouble with the system, privs */ 974238106Sdes for(i=1024; i<num; i++) { 975238106Sdes a[i] = i; 976238106Sdes } 977238106Sdes /* create empty spot at 49152 to keep ephemeral ports available 978238106Sdes * to other programs */ 979238106Sdes for(i=49152; i<49152+256; i++) 980238106Sdes a[i] = 0; 981238106Sdes /* pick out all the IANA assigned ports */ 982238106Sdes for(i=0; iana_assigned[i]!=-1; i++) { 983238106Sdes if(iana_assigned[i] < num) 984238106Sdes a[iana_assigned[i]] = 0; 985238106Sdes } 986238106Sdes} 987238106Sdes 988238106Sdesint 989238106Sdescfg_mark_ports(const char* str, int allow, int* avail, int num) 990238106Sdes{ 991238106Sdes char* mid = strchr(str, '-'); 992238106Sdes if(!mid) { 993238106Sdes int port = atoi(str); 994238106Sdes if(port == 0 && strcmp(str, "0") != 0) { 995238106Sdes log_err("cannot parse port number '%s'", str); 996238106Sdes return 0; 997238106Sdes } 998238106Sdes if(port < num) 999238106Sdes avail[port] = (allow?port:0); 1000238106Sdes } else { 1001238106Sdes int i, low, high = atoi(mid+1); 1002238106Sdes char buf[16]; 1003238106Sdes if(high == 0 && strcmp(mid+1, "0") != 0) { 1004238106Sdes log_err("cannot parse port number '%s'", mid+1); 1005238106Sdes return 0; 1006238106Sdes } 1007238106Sdes if( (int)(mid-str)+1 >= (int)sizeof(buf) ) { 1008238106Sdes log_err("cannot parse port number '%s'", str); 1009238106Sdes return 0; 1010238106Sdes } 1011238106Sdes if(mid > str) 1012238106Sdes memcpy(buf, str, (size_t)(mid-str)); 1013238106Sdes buf[mid-str] = 0; 1014238106Sdes low = atoi(buf); 1015238106Sdes if(low == 0 && strcmp(buf, "0") != 0) { 1016238106Sdes log_err("cannot parse port number '%s'", buf); 1017238106Sdes return 0; 1018238106Sdes } 1019238106Sdes for(i=low; i<=high; i++) { 1020238106Sdes if(i < num) 1021238106Sdes avail[i] = (allow?i:0); 1022238106Sdes } 1023238106Sdes return 1; 1024238106Sdes } 1025238106Sdes return 1; 1026238106Sdes} 1027238106Sdes 1028238106Sdesint 1029238106Sdescfg_scan_ports(int* avail, int num) 1030238106Sdes{ 1031238106Sdes int i; 1032238106Sdes int count = 0; 1033238106Sdes for(i=0; i<num; i++) { 1034238106Sdes if(avail[i]) 1035238106Sdes count++; 1036238106Sdes } 1037238106Sdes return count; 1038238106Sdes} 1039238106Sdes 1040238106Sdesint cfg_condense_ports(struct config_file* cfg, int** avail) 1041238106Sdes{ 1042238106Sdes int num = cfg_scan_ports(cfg->outgoing_avail_ports, 65536); 1043238106Sdes int i, at = 0; 1044238106Sdes *avail = NULL; 1045238106Sdes if(num == 0) 1046238106Sdes return 0; 1047287917Sdes *avail = (int*)reallocarray(NULL, (size_t)num, sizeof(int)); 1048238106Sdes if(!*avail) 1049238106Sdes return 0; 1050238106Sdes for(i=0; i<65536; i++) { 1051238106Sdes if(cfg->outgoing_avail_ports[i]) 1052238106Sdes (*avail)[at++] = cfg->outgoing_avail_ports[i]; 1053238106Sdes } 1054238106Sdes log_assert(at == num); 1055238106Sdes return num; 1056238106Sdes} 1057238106Sdes 1058238106Sdes/** print error with file and line number */ 1059238106Sdesstatic void ub_c_error_va_list(const char *fmt, va_list args) 1060238106Sdes{ 1061238106Sdes cfg_parser->errors++; 1062238106Sdes fprintf(stderr, "%s:%d: error: ", cfg_parser->filename, 1063238106Sdes cfg_parser->line); 1064238106Sdes vfprintf(stderr, fmt, args); 1065238106Sdes fprintf(stderr, "\n"); 1066238106Sdes} 1067238106Sdes 1068238106Sdes/** print error with file and line number */ 1069238106Sdesvoid ub_c_error_msg(const char* fmt, ...) 1070238106Sdes{ 1071238106Sdes va_list args; 1072238106Sdes va_start(args, fmt); 1073238106Sdes ub_c_error_va_list(fmt, args); 1074238106Sdes va_end(args); 1075238106Sdes} 1076238106Sdes 1077238106Sdesvoid ub_c_error(const char *str) 1078238106Sdes{ 1079238106Sdes cfg_parser->errors++; 1080238106Sdes fprintf(stderr, "%s:%d: error: %s\n", cfg_parser->filename, 1081238106Sdes cfg_parser->line, str); 1082238106Sdes} 1083238106Sdes 1084238106Sdesint ub_c_wrap(void) 1085238106Sdes{ 1086238106Sdes return 1; 1087238106Sdes} 1088238106Sdes 1089238106Sdesint cfg_strlist_append(struct config_strlist_head* list, char* item) 1090238106Sdes{ 1091238106Sdes struct config_strlist *s; 1092238106Sdes if(!item || !list) 1093238106Sdes return 0; 1094238106Sdes s = (struct config_strlist*)calloc(1, sizeof(struct config_strlist)); 1095238106Sdes if(!s) 1096238106Sdes return 0; 1097238106Sdes s->str = item; 1098238106Sdes s->next = NULL; 1099238106Sdes if(list->last) 1100238106Sdes list->last->next = s; 1101238106Sdes else 1102238106Sdes list->first = s; 1103238106Sdes list->last = s; 1104238106Sdes return 1; 1105238106Sdes} 1106238106Sdes 1107238106Sdesint 1108238106Sdescfg_strlist_insert(struct config_strlist** head, char* item) 1109238106Sdes{ 1110238106Sdes struct config_strlist *s; 1111238106Sdes if(!item || !head) 1112238106Sdes return 0; 1113238106Sdes s = (struct config_strlist*)calloc(1, sizeof(struct config_strlist)); 1114238106Sdes if(!s) 1115238106Sdes return 0; 1116238106Sdes s->str = item; 1117238106Sdes s->next = *head; 1118238106Sdes *head = s; 1119238106Sdes return 1; 1120238106Sdes} 1121238106Sdes 1122238106Sdesint 1123238106Sdescfg_str2list_insert(struct config_str2list** head, char* item, char* i2) 1124238106Sdes{ 1125238106Sdes struct config_str2list *s; 1126238106Sdes if(!item || !i2 || !head) 1127238106Sdes return 0; 1128238106Sdes s = (struct config_str2list*)calloc(1, sizeof(struct config_str2list)); 1129238106Sdes if(!s) 1130238106Sdes return 0; 1131238106Sdes s->str = item; 1132238106Sdes s->str2 = i2; 1133238106Sdes s->next = *head; 1134238106Sdes *head = s; 1135238106Sdes return 1; 1136238106Sdes} 1137238106Sdes 1138266114Sdestime_t 1139238106Sdescfg_convert_timeval(const char* str) 1140238106Sdes{ 1141266114Sdes time_t t; 1142238106Sdes struct tm tm; 1143238106Sdes memset(&tm, 0, sizeof(tm)); 1144238106Sdes if(strlen(str) < 14) 1145238106Sdes return 0; 1146238106Sdes if(sscanf(str, "%4d%2d%2d%2d%2d%2d", &tm.tm_year, &tm.tm_mon, 1147238106Sdes &tm.tm_mday, &tm.tm_hour, &tm.tm_min, &tm.tm_sec) != 6) 1148238106Sdes return 0; 1149238106Sdes tm.tm_year -= 1900; 1150238106Sdes tm.tm_mon--; 1151238106Sdes /* Check values */ 1152238106Sdes if (tm.tm_year < 70) return 0; 1153238106Sdes if (tm.tm_mon < 0 || tm.tm_mon > 11) return 0; 1154238106Sdes if (tm.tm_mday < 1 || tm.tm_mday > 31) return 0; 1155238106Sdes if (tm.tm_hour < 0 || tm.tm_hour > 23) return 0; 1156238106Sdes if (tm.tm_min < 0 || tm.tm_min > 59) return 0; 1157238106Sdes if (tm.tm_sec < 0 || tm.tm_sec > 59) return 0; 1158238106Sdes /* call ldns conversion function */ 1159266114Sdes t = sldns_mktime_from_utc(&tm); 1160238106Sdes return t; 1161238106Sdes} 1162238106Sdes 1163238106Sdesint 1164238106Sdescfg_count_numbers(const char* s) 1165238106Sdes{ 1166249141Sdes /* format ::= (sp num)+ sp */ 1167249141Sdes /* num ::= [-](0-9)+ */ 1168249141Sdes /* sp ::= (space|tab)* */ 1169249141Sdes int num = 0; 1170249141Sdes while(*s) { 1171276605Sdes while(*s && isspace((unsigned char)*s)) 1172249141Sdes s++; 1173249141Sdes if(!*s) /* end of string */ 1174249141Sdes break; 1175249141Sdes if(*s == '-') 1176249141Sdes s++; 1177249141Sdes if(!*s) /* only - not allowed */ 1178249141Sdes return 0; 1179276605Sdes if(!isdigit((unsigned char)*s)) /* bad character */ 1180249141Sdes return 0; 1181276605Sdes while(*s && isdigit((unsigned char)*s)) 1182249141Sdes s++; 1183249141Sdes num++; 1184249141Sdes } 1185249141Sdes return num; 1186238106Sdes} 1187238106Sdes 1188238106Sdes/** all digit number */ 1189238106Sdesstatic int isalldigit(const char* str, size_t l) 1190238106Sdes{ 1191238106Sdes size_t i; 1192238106Sdes for(i=0; i<l; i++) 1193276605Sdes if(!isdigit((unsigned char)str[i])) 1194238106Sdes return 0; 1195238106Sdes return 1; 1196238106Sdes} 1197238106Sdes 1198238106Sdesint 1199238106Sdescfg_parse_memsize(const char* str, size_t* res) 1200238106Sdes{ 1201249141Sdes size_t len; 1202238106Sdes size_t mult = 1; 1203249141Sdes if(!str || (len=(size_t)strlen(str)) == 0) { 1204238106Sdes log_err("not a size: '%s'", str); 1205238106Sdes return 0; 1206238106Sdes } 1207238106Sdes if(isalldigit(str, len)) { 1208238106Sdes *res = (size_t)atol(str); 1209238106Sdes return 1; 1210238106Sdes } 1211238106Sdes /* check appended num */ 1212238106Sdes while(len>0 && str[len-1]==' ') 1213238106Sdes len--; 1214238106Sdes if(len > 1 && str[len-1] == 'b') 1215238106Sdes len--; 1216238106Sdes else if(len > 1 && str[len-1] == 'B') 1217238106Sdes len--; 1218238106Sdes 1219276605Sdes if(len > 1 && tolower((unsigned char)str[len-1]) == 'g') 1220238106Sdes mult = 1024*1024*1024; 1221276605Sdes else if(len > 1 && tolower((unsigned char)str[len-1]) == 'm') 1222238106Sdes mult = 1024*1024; 1223276605Sdes else if(len > 1 && tolower((unsigned char)str[len-1]) == 'k') 1224238106Sdes mult = 1024; 1225276605Sdes else if(len > 0 && isdigit((unsigned char)str[len-1])) 1226238106Sdes mult = 1; 1227238106Sdes else { 1228238106Sdes log_err("unknown size specifier: '%s'", str); 1229238106Sdes return 0; 1230238106Sdes } 1231238106Sdes while(len>1 && str[len-2]==' ') 1232238106Sdes len--; 1233238106Sdes 1234238106Sdes if(!isalldigit(str, len-1)) { 1235238106Sdes log_err("unknown size specifier: '%s'", str); 1236238106Sdes return 0; 1237238106Sdes } 1238238106Sdes *res = ((size_t)atol(str)) * mult; 1239238106Sdes return 1; 1240238106Sdes} 1241238106Sdes 1242238106Sdesvoid 1243238106Sdesconfig_apply(struct config_file* config) 1244238106Sdes{ 1245266114Sdes MAX_TTL = (time_t)config->max_ttl; 1246266114Sdes MIN_TTL = (time_t)config->min_ttl; 1247287917Sdes MAX_NEG_TTL = (time_t)config->max_negative_ttl; 1248282089Sdes RTT_MIN_TIMEOUT = config->infra_cache_min_rtt; 1249238106Sdes EDNS_ADVERTISED_SIZE = (uint16_t)config->edns_buffer_size; 1250238106Sdes MINIMAL_RESPONSES = config->minimal_responses; 1251238106Sdes RRSET_ROUNDROBIN = config->rrset_roundrobin; 1252238106Sdes log_set_time_asc(config->log_time_ascii); 1253289063Sdes autr_permit_small_holddown = config->permit_small_holddown; 1254238106Sdes} 1255238106Sdes 1256277057Sdesvoid config_lookup_uid(struct config_file* cfg) 1257277057Sdes{ 1258277057Sdes#ifdef HAVE_GETPWNAM 1259277057Sdes /* translate username into uid and gid */ 1260277057Sdes if(cfg->username && cfg->username[0]) { 1261277057Sdes struct passwd *pwd; 1262282089Sdes if((pwd = getpwnam(cfg->username)) != NULL) { 1263282089Sdes cfg_uid = pwd->pw_uid; 1264282089Sdes cfg_gid = pwd->pw_gid; 1265282089Sdes } 1266277057Sdes } 1267282089Sdes#else 1268282089Sdes (void)cfg; 1269277057Sdes#endif 1270277057Sdes} 1271277057Sdes 1272238106Sdes/** 1273238106Sdes * Calculate string length of full pathname in original filesys 1274238106Sdes * @param fname: the path name to convert. 1275238106Sdes * Must not be null or empty. 1276238106Sdes * @param cfg: config struct for chroot and chdir (if set). 1277238106Sdes * @param use_chdir: if false, only chroot is applied. 1278238106Sdes * @return length of string. 1279238106Sdes * remember to allocate one more for 0 at end in mallocs. 1280238106Sdes */ 1281238106Sdesstatic size_t 1282238106Sdesstrlen_after_chroot(const char* fname, struct config_file* cfg, int use_chdir) 1283238106Sdes{ 1284238106Sdes size_t len = 0; 1285238106Sdes int slashit = 0; 1286238106Sdes if(cfg->chrootdir && cfg->chrootdir[0] && 1287238106Sdes strncmp(cfg->chrootdir, fname, strlen(cfg->chrootdir)) == 0) { 1288238106Sdes /* already full pathname, return it */ 1289238106Sdes return strlen(fname); 1290238106Sdes } 1291238106Sdes /* chroot */ 1292238106Sdes if(cfg->chrootdir && cfg->chrootdir[0]) { 1293238106Sdes /* start with chrootdir */ 1294238106Sdes len += strlen(cfg->chrootdir); 1295238106Sdes slashit = 1; 1296238106Sdes } 1297238106Sdes /* chdir */ 1298238106Sdes#ifdef UB_ON_WINDOWS 1299238106Sdes if(fname[0] != 0 && fname[1] == ':') { 1300238106Sdes /* full path, no chdir */ 1301238106Sdes } else 1302238106Sdes#endif 1303238106Sdes if(fname[0] == '/' || !use_chdir) { 1304238106Sdes /* full path, no chdir */ 1305238106Sdes } else if(cfg->directory && cfg->directory[0]) { 1306238106Sdes /* prepend chdir */ 1307238106Sdes if(slashit && cfg->directory[0] != '/') 1308238106Sdes len++; 1309238106Sdes if(cfg->chrootdir && cfg->chrootdir[0] && 1310238106Sdes strncmp(cfg->chrootdir, cfg->directory, 1311238106Sdes strlen(cfg->chrootdir)) == 0) 1312238106Sdes len += strlen(cfg->directory)-strlen(cfg->chrootdir); 1313238106Sdes else len += strlen(cfg->directory); 1314238106Sdes slashit = 1; 1315238106Sdes } 1316238106Sdes /* fname */ 1317238106Sdes if(slashit && fname[0] != '/') 1318238106Sdes len++; 1319238106Sdes len += strlen(fname); 1320238106Sdes return len; 1321238106Sdes} 1322238106Sdes 1323238106Sdeschar* 1324238106Sdesfname_after_chroot(const char* fname, struct config_file* cfg, int use_chdir) 1325238106Sdes{ 1326266114Sdes size_t len = strlen_after_chroot(fname, cfg, use_chdir)+1; 1327238106Sdes int slashit = 0; 1328266114Sdes char* buf = (char*)malloc(len); 1329238106Sdes if(!buf) 1330238106Sdes return NULL; 1331238106Sdes buf[0] = 0; 1332238106Sdes /* is fname already in chroot ? */ 1333238106Sdes if(cfg->chrootdir && cfg->chrootdir[0] && 1334238106Sdes strncmp(cfg->chrootdir, fname, strlen(cfg->chrootdir)) == 0) { 1335238106Sdes /* already full pathname, return it */ 1336266114Sdes (void)strlcpy(buf, fname, len); 1337266114Sdes buf[len-1] = 0; 1338238106Sdes return buf; 1339238106Sdes } 1340238106Sdes /* chroot */ 1341238106Sdes if(cfg->chrootdir && cfg->chrootdir[0]) { 1342238106Sdes /* start with chrootdir */ 1343266114Sdes (void)strlcpy(buf, cfg->chrootdir, len); 1344238106Sdes slashit = 1; 1345238106Sdes } 1346238106Sdes#ifdef UB_ON_WINDOWS 1347238106Sdes if(fname[0] != 0 && fname[1] == ':') { 1348238106Sdes /* full path, no chdir */ 1349238106Sdes } else 1350238106Sdes#endif 1351238106Sdes /* chdir */ 1352238106Sdes if(fname[0] == '/' || !use_chdir) { 1353238106Sdes /* full path, no chdir */ 1354238106Sdes } else if(cfg->directory && cfg->directory[0]) { 1355238106Sdes /* prepend chdir */ 1356238106Sdes if(slashit && cfg->directory[0] != '/') 1357266114Sdes (void)strlcat(buf, "/", len); 1358238106Sdes /* is the directory already in the chroot? */ 1359238106Sdes if(cfg->chrootdir && cfg->chrootdir[0] && 1360238106Sdes strncmp(cfg->chrootdir, cfg->directory, 1361238106Sdes strlen(cfg->chrootdir)) == 0) 1362266114Sdes (void)strlcat(buf, cfg->directory+strlen(cfg->chrootdir), 1363266114Sdes len); 1364266114Sdes else (void)strlcat(buf, cfg->directory, len); 1365238106Sdes slashit = 1; 1366238106Sdes } 1367238106Sdes /* fname */ 1368238106Sdes if(slashit && fname[0] != '/') 1369266114Sdes (void)strlcat(buf, "/", len); 1370266114Sdes (void)strlcat(buf, fname, len); 1371266114Sdes buf[len-1] = 0; 1372238106Sdes return buf; 1373238106Sdes} 1374238106Sdes 1375238106Sdes/** return next space character in string */ 1376238106Sdesstatic char* next_space_pos(const char* str) 1377238106Sdes{ 1378238106Sdes char* sp = strchr(str, ' '); 1379238106Sdes char* tab = strchr(str, '\t'); 1380238106Sdes if(!tab && !sp) 1381238106Sdes return NULL; 1382238106Sdes if(!sp) return tab; 1383238106Sdes if(!tab) return sp; 1384238106Sdes return (sp<tab)?sp:tab; 1385238106Sdes} 1386238106Sdes 1387238106Sdes/** return last space character in string */ 1388238106Sdesstatic char* last_space_pos(const char* str) 1389238106Sdes{ 1390238106Sdes char* sp = strrchr(str, ' '); 1391238106Sdes char* tab = strrchr(str, '\t'); 1392238106Sdes if(!tab && !sp) 1393238106Sdes return NULL; 1394238106Sdes if(!sp) return tab; 1395238106Sdes if(!tab) return sp; 1396238106Sdes return (sp>tab)?sp:tab; 1397238106Sdes} 1398238106Sdes 1399238106Sdesint 1400238106Sdescfg_parse_local_zone(struct config_file* cfg, const char* val) 1401238106Sdes{ 1402238106Sdes const char *type, *name_end, *name; 1403238106Sdes char buf[256]; 1404238106Sdes 1405238106Sdes /* parse it as: [zone_name] [between stuff] [zone_type] */ 1406238106Sdes name = val; 1407276605Sdes while(*name && isspace((unsigned char)*name)) 1408238106Sdes name++; 1409238106Sdes if(!*name) { 1410238106Sdes log_err("syntax error: too short: %s", val); 1411238106Sdes return 0; 1412238106Sdes } 1413238106Sdes name_end = next_space_pos(name); 1414238106Sdes if(!name_end || !*name_end) { 1415238106Sdes log_err("syntax error: expected zone type: %s", val); 1416238106Sdes return 0; 1417238106Sdes } 1418238106Sdes if (name_end - name > 255) { 1419238106Sdes log_err("syntax error: bad zone name: %s", val); 1420238106Sdes return 0; 1421238106Sdes } 1422266114Sdes (void)strlcpy(buf, name, sizeof(buf)); 1423238106Sdes buf[name_end-name] = '\0'; 1424238106Sdes 1425238106Sdes type = last_space_pos(name_end); 1426276605Sdes while(type && *type && isspace((unsigned char)*type)) 1427238106Sdes type++; 1428238106Sdes if(!type || !*type) { 1429238106Sdes log_err("syntax error: expected zone type: %s", val); 1430238106Sdes return 0; 1431238106Sdes } 1432238106Sdes 1433238106Sdes if(strcmp(type, "nodefault")==0) { 1434238106Sdes return cfg_strlist_insert(&cfg->local_zones_nodefault, 1435238106Sdes strdup(name)); 1436238106Sdes } else { 1437238106Sdes return cfg_str2list_insert(&cfg->local_zones, strdup(buf), 1438238106Sdes strdup(type)); 1439238106Sdes } 1440238106Sdes} 1441238106Sdes 1442238106Sdeschar* cfg_ptr_reverse(char* str) 1443238106Sdes{ 1444238106Sdes char* ip, *ip_end; 1445238106Sdes char* name; 1446238106Sdes char* result; 1447238106Sdes char buf[1024]; 1448238106Sdes struct sockaddr_storage addr; 1449238106Sdes socklen_t addrlen; 1450238106Sdes 1451238106Sdes /* parse it as: [IP] [between stuff] [name] */ 1452238106Sdes ip = str; 1453276605Sdes while(*ip && isspace((unsigned char)*ip)) 1454238106Sdes ip++; 1455238106Sdes if(!*ip) { 1456238106Sdes log_err("syntax error: too short: %s", str); 1457238106Sdes return NULL; 1458238106Sdes } 1459238106Sdes ip_end = next_space_pos(ip); 1460238106Sdes if(!ip_end || !*ip_end) { 1461238106Sdes log_err("syntax error: expected name: %s", str); 1462238106Sdes return NULL; 1463238106Sdes } 1464238106Sdes 1465238106Sdes name = last_space_pos(ip_end); 1466238106Sdes if(!name || !*name) { 1467238106Sdes log_err("syntax error: expected name: %s", str); 1468238106Sdes return NULL; 1469238106Sdes } 1470238106Sdes 1471238106Sdes sscanf(ip, "%100s", buf); 1472238106Sdes buf[sizeof(buf)-1]=0; 1473238106Sdes 1474238106Sdes if(!ipstrtoaddr(buf, UNBOUND_DNS_PORT, &addr, &addrlen)) { 1475238106Sdes log_err("syntax error: cannot parse address: %s", str); 1476238106Sdes return NULL; 1477238106Sdes } 1478238106Sdes 1479238106Sdes /* reverse IPv4: 1480238106Sdes * ddd.ddd.ddd.ddd.in-addr-arpa. 1481238106Sdes * IPv6: (h.){32}.ip6.arpa. */ 1482238106Sdes 1483238106Sdes if(addr_is_ip6(&addr, addrlen)) { 1484238106Sdes uint8_t ad[16]; 1485238106Sdes const char* hex = "0123456789abcdef"; 1486238106Sdes char *p = buf; 1487238106Sdes int i; 1488238106Sdes memmove(ad, &((struct sockaddr_in6*)&addr)->sin6_addr, 1489238106Sdes sizeof(ad)); 1490238106Sdes for(i=15; i>=0; i--) { 1491238106Sdes uint8_t b = ad[i]; 1492238106Sdes *p++ = hex[ (b&0x0f) ]; 1493238106Sdes *p++ = '.'; 1494238106Sdes *p++ = hex[ (b&0xf0) >> 4 ]; 1495238106Sdes *p++ = '.'; 1496238106Sdes } 1497238106Sdes snprintf(buf+16*4, sizeof(buf)-16*4, "ip6.arpa. "); 1498238106Sdes } else { 1499238106Sdes uint8_t ad[4]; 1500238106Sdes memmove(ad, &((struct sockaddr_in*)&addr)->sin_addr, 1501238106Sdes sizeof(ad)); 1502238106Sdes snprintf(buf, sizeof(buf), "%u.%u.%u.%u.in-addr.arpa. ", 1503238106Sdes (unsigned)ad[3], (unsigned)ad[2], 1504238106Sdes (unsigned)ad[1], (unsigned)ad[0]); 1505238106Sdes } 1506238106Sdes 1507238106Sdes /* printed the reverse address, now the between goop and name on end */ 1508276605Sdes while(*ip_end && isspace((unsigned char)*ip_end)) 1509238106Sdes ip_end++; 1510238106Sdes if(name>ip_end) { 1511238106Sdes snprintf(buf+strlen(buf), sizeof(buf)-strlen(buf), "%.*s", 1512238106Sdes (int)(name-ip_end), ip_end); 1513238106Sdes } 1514238106Sdes snprintf(buf+strlen(buf), sizeof(buf)-strlen(buf), " PTR %s", name); 1515238106Sdes 1516238106Sdes result = strdup(buf); 1517238106Sdes if(!result) { 1518238106Sdes log_err("out of memory parsing %s", str); 1519238106Sdes return NULL; 1520238106Sdes } 1521238106Sdes return result; 1522238106Sdes} 1523238106Sdes 1524238106Sdes#ifdef UB_ON_WINDOWS 1525238106Sdeschar* 1526238106Sdesw_lookup_reg_str(const char* key, const char* name) 1527238106Sdes{ 1528238106Sdes HKEY hk = NULL; 1529238106Sdes DWORD type = 0; 1530238106Sdes BYTE buf[1024]; 1531238106Sdes DWORD len = (DWORD)sizeof(buf); 1532238106Sdes LONG ret; 1533238106Sdes char* result = NULL; 1534238106Sdes ret = RegOpenKeyEx(HKEY_LOCAL_MACHINE, key, 0, KEY_READ, &hk); 1535238106Sdes if(ret == ERROR_FILE_NOT_FOUND) 1536238106Sdes return NULL; /* key does not exist */ 1537238106Sdes else if(ret != ERROR_SUCCESS) { 1538238106Sdes log_err("RegOpenKeyEx failed"); 1539238106Sdes return NULL; 1540238106Sdes } 1541238106Sdes ret = RegQueryValueEx(hk, (LPCTSTR)name, 0, &type, buf, &len); 1542238106Sdes if(RegCloseKey(hk)) 1543238106Sdes log_err("RegCloseKey"); 1544238106Sdes if(ret == ERROR_FILE_NOT_FOUND) 1545238106Sdes return NULL; /* name does not exist */ 1546238106Sdes else if(ret != ERROR_SUCCESS) { 1547238106Sdes log_err("RegQueryValueEx failed"); 1548238106Sdes return NULL; 1549238106Sdes } 1550238106Sdes if(type == REG_SZ || type == REG_MULTI_SZ || type == REG_EXPAND_SZ) { 1551238106Sdes buf[sizeof(buf)-1] = 0; 1552238106Sdes buf[sizeof(buf)-2] = 0; /* for multi_sz */ 1553238106Sdes result = strdup((char*)buf); 1554238106Sdes if(!result) log_err("out of memory"); 1555238106Sdes } 1556238106Sdes return result; 1557238106Sdes} 1558238106Sdes#endif /* UB_ON_WINDOWS */ 1559238106Sdes 1560238106Sdesvoid errinf(struct module_qstate* qstate, const char* str) 1561238106Sdes{ 1562238106Sdes struct config_strlist* p; 1563238106Sdes if(qstate->env->cfg->val_log_level < 2 || !str) 1564238106Sdes return; 1565238106Sdes p = (struct config_strlist*)regional_alloc(qstate->region, sizeof(*p)); 1566238106Sdes if(!p) { 1567238106Sdes log_err("malloc failure in validator-error-info string"); 1568238106Sdes return; 1569238106Sdes } 1570238106Sdes p->next = NULL; 1571238106Sdes p->str = regional_strdup(qstate->region, str); 1572238106Sdes if(!p->str) { 1573238106Sdes log_err("malloc failure in validator-error-info string"); 1574238106Sdes return; 1575238106Sdes } 1576238106Sdes /* add at end */ 1577238106Sdes if(qstate->errinf) { 1578238106Sdes struct config_strlist* q = qstate->errinf; 1579238106Sdes while(q->next) 1580238106Sdes q = q->next; 1581238106Sdes q->next = p; 1582238106Sdes } else qstate->errinf = p; 1583238106Sdes} 1584238106Sdes 1585238106Sdesvoid errinf_origin(struct module_qstate* qstate, struct sock_list *origin) 1586238106Sdes{ 1587238106Sdes struct sock_list* p; 1588238106Sdes if(qstate->env->cfg->val_log_level < 2) 1589238106Sdes return; 1590238106Sdes for(p=origin; p; p=p->next) { 1591238106Sdes char buf[256]; 1592238106Sdes if(p == origin) 1593238106Sdes snprintf(buf, sizeof(buf), "from "); 1594238106Sdes else snprintf(buf, sizeof(buf), "and "); 1595238106Sdes if(p->len == 0) 1596238106Sdes snprintf(buf+strlen(buf), sizeof(buf)-strlen(buf), 1597238106Sdes "cache"); 1598238106Sdes else 1599238106Sdes addr_to_str(&p->addr, p->len, buf+strlen(buf), 1600238106Sdes sizeof(buf)-strlen(buf)); 1601238106Sdes errinf(qstate, buf); 1602238106Sdes } 1603238106Sdes} 1604238106Sdes 1605238106Sdeschar* errinf_to_str(struct module_qstate* qstate) 1606238106Sdes{ 1607238106Sdes char buf[20480]; 1608238106Sdes char* p = buf; 1609238106Sdes size_t left = sizeof(buf); 1610238106Sdes struct config_strlist* s; 1611238106Sdes char dname[LDNS_MAX_DOMAINLEN+1]; 1612266114Sdes char t[16], c[16]; 1613266114Sdes sldns_wire2str_type_buf(qstate->qinfo.qtype, t, sizeof(t)); 1614266114Sdes sldns_wire2str_class_buf(qstate->qinfo.qclass, c, sizeof(c)); 1615238106Sdes dname_str(qstate->qinfo.qname, dname); 1616238106Sdes snprintf(p, left, "validation failure <%s %s %s>:", dname, t, c); 1617238106Sdes left -= strlen(p); p += strlen(p); 1618238106Sdes if(!qstate->errinf) 1619238106Sdes snprintf(p, left, " misc failure"); 1620238106Sdes else for(s=qstate->errinf; s; s=s->next) { 1621238106Sdes snprintf(p, left, " %s", s->str); 1622238106Sdes left -= strlen(p); p += strlen(p); 1623238106Sdes } 1624238106Sdes p = strdup(buf); 1625238106Sdes if(!p) 1626238106Sdes log_err("malloc failure in errinf_to_str"); 1627238106Sdes return p; 1628238106Sdes} 1629238106Sdes 1630238106Sdesvoid errinf_rrset(struct module_qstate* qstate, struct ub_packed_rrset_key *rr) 1631238106Sdes{ 1632238106Sdes char buf[1024]; 1633238106Sdes char dname[LDNS_MAX_DOMAINLEN+1]; 1634266114Sdes char t[16], c[16]; 1635238106Sdes if(qstate->env->cfg->val_log_level < 2 || !rr) 1636238106Sdes return; 1637266114Sdes sldns_wire2str_type_buf(ntohs(rr->rk.type), t, sizeof(t)); 1638266114Sdes sldns_wire2str_class_buf(ntohs(rr->rk.rrset_class), c, sizeof(c)); 1639238106Sdes dname_str(rr->rk.dname, dname); 1640238106Sdes snprintf(buf, sizeof(buf), "for <%s %s %s>", dname, t, c); 1641238106Sdes errinf(qstate, buf); 1642238106Sdes} 1643238106Sdes 1644238106Sdesvoid errinf_dname(struct module_qstate* qstate, const char* str, uint8_t* dname) 1645238106Sdes{ 1646238106Sdes char b[1024]; 1647238106Sdes char buf[LDNS_MAX_DOMAINLEN+1]; 1648238106Sdes if(qstate->env->cfg->val_log_level < 2 || !str || !dname) 1649238106Sdes return; 1650238106Sdes dname_str(dname, buf); 1651238106Sdes snprintf(b, sizeof(b), "%s %s", str, buf); 1652238106Sdes errinf(qstate, b); 1653238106Sdes} 1654