1 /* 2 * util/config_file.h - 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 #ifndef UTIL_CONFIG_FILE_H 43 #define UTIL_CONFIG_FILE_H 44 #include "sldns/rrdef.h" 45 struct config_stub; 46 struct config_auth; 47 struct config_view; 48 struct config_strlist; 49 struct config_str2list; 50 struct config_str3list; 51 struct config_strbytelist; 52 struct module_qstate; 53 struct sock_list; 54 struct ub_packed_rrset_key; 55 struct regional; 56 57 /** List head for strlist processing, used for append operation. */ 58 struct config_strlist_head { 59 /** first in list of text items */ 60 struct config_strlist* first; 61 /** last in list of text items */ 62 struct config_strlist* last; 63 }; 64 65 /** 66 * The configuration options. 67 * Strings are malloced. 68 */ 69 struct config_file { 70 /** verbosity level as specified in the config file */ 71 int verbosity; 72 73 /** statistics interval (in seconds) */ 74 int stat_interval; 75 /** if false, statistics values are reset after printing them */ 76 int stat_cumulative; 77 /** if true, the statistics are kept in greater detail */ 78 int stat_extended; 79 /** if true, inhibits a lot of =0 lines from the extended stats output */ 80 int stat_inhibit_zero; 81 82 /** number of threads to create */ 83 int num_threads; 84 85 /** port on which queries are answered. */ 86 int port; 87 /** do ip4 query support. */ 88 int do_ip4; 89 /** do ip6 query support. */ 90 int do_ip6; 91 /** prefer ip4 upstream queries. */ 92 int prefer_ip4; 93 /** prefer ip6 upstream queries. */ 94 int prefer_ip6; 95 /** do udp query support. */ 96 int do_udp; 97 /** do tcp query support. */ 98 int do_tcp; 99 /** max number of queries on a reuse connection. */ 100 size_t max_reuse_tcp_queries; 101 /** timeout for REUSE entries in milliseconds. */ 102 int tcp_reuse_timeout; 103 /** timeout in milliseconds for TCP queries to auth servers. */ 104 int tcp_auth_query_timeout; 105 /** tcp upstream queries (no UDP upstream queries) */ 106 int tcp_upstream; 107 /** udp upstream enabled when no UDP downstream is enabled (do_udp no)*/ 108 int udp_upstream_without_downstream; 109 /** maximum segment size of tcp socket which queries are answered */ 110 int tcp_mss; 111 /** maximum segment size of tcp socket for outgoing queries */ 112 int outgoing_tcp_mss; 113 /** tcp idle timeout, in msec */ 114 int tcp_idle_timeout; 115 /** do edns tcp keepalive */ 116 int do_tcp_keepalive; 117 /** tcp keepalive timeout, in msec */ 118 int tcp_keepalive_timeout; 119 /** proxy protocol ports */ 120 struct config_strlist* proxy_protocol_port; 121 122 /** private key file for dnstcp-ssl service (enabled if not NULL) */ 123 char* ssl_service_key; 124 /** public key file for dnstcp-ssl service */ 125 char* ssl_service_pem; 126 /** port on which to provide ssl service */ 127 int ssl_port; 128 /** if outgoing tcp connections use SSL */ 129 int ssl_upstream; 130 /** cert bundle for outgoing connections */ 131 char* tls_cert_bundle; 132 /** should the system certificate store get added to the cert bundle */ 133 int tls_win_cert; 134 /** additional tls ports */ 135 struct config_strlist* tls_additional_port; 136 /** secret key used to encrypt and decrypt TLS session ticket */ 137 struct config_strlist_head tls_session_ticket_keys; 138 /** TLS ciphers */ 139 char* tls_ciphers; 140 /** TLS chiphersuites (TLSv1.3) */ 141 char* tls_ciphersuites; 142 /** if SNI is to be used */ 143 int tls_use_sni; 144 145 /** port on which to provide DNS over HTTPS service */ 146 int https_port; 147 /** endpoint for HTTP service */ 148 char* http_endpoint; 149 /** MAX_CONCURRENT_STREAMS HTTP/2 setting */ 150 uint32_t http_max_streams; 151 /** maximum size of all HTTP2 query buffers combined. */ 152 size_t http_query_buffer_size; 153 /** maximum size of all HTTP2 response buffers combined. */ 154 size_t http_response_buffer_size; 155 /** set TCP_NODELAY option for http sockets */ 156 int http_nodelay; 157 /** Disable TLS for http sockets downstream */ 158 int http_notls_downstream; 159 160 /** outgoing port range number of ports (per thread) */ 161 int outgoing_num_ports; 162 /** number of outgoing tcp buffers per (per thread) */ 163 size_t outgoing_num_tcp; 164 /** number of incoming tcp buffers per (per thread) */ 165 size_t incoming_num_tcp; 166 /** allowed udp port numbers, array with 0 if not allowed */ 167 int* outgoing_avail_ports; 168 169 /** EDNS buffer size to use */ 170 size_t edns_buffer_size; 171 /** size of the stream wait buffers, max */ 172 size_t stream_wait_size; 173 /** number of bytes buffer size for DNS messages */ 174 size_t msg_buffer_size; 175 /** size of the message cache */ 176 size_t msg_cache_size; 177 /** slabs in the message cache. */ 178 size_t msg_cache_slabs; 179 /** number of queries every thread can service */ 180 size_t num_queries_per_thread; 181 /** number of msec to wait before items can be jostled out */ 182 size_t jostle_time; 183 /** size of the rrset cache */ 184 size_t rrset_cache_size; 185 /** slabs in the rrset cache */ 186 size_t rrset_cache_slabs; 187 /** host cache ttl in seconds */ 188 int host_ttl; 189 /** number of slabs in the infra host cache */ 190 size_t infra_cache_slabs; 191 /** max number of hosts in the infra cache */ 192 size_t infra_cache_numhosts; 193 /** min value for infra cache rtt (min retransmit timeout) */ 194 int infra_cache_min_rtt; 195 /** max value for infra cache rtt (max retransmit timeout) */ 196 int infra_cache_max_rtt; 197 /** keep probing hosts that are down */ 198 int infra_keep_probing; 199 /** delay close of udp-timeouted ports, if 0 no delayclose. in msec */ 200 int delay_close; 201 /** udp_connect enable uses UDP connect to mitigate ICMP side channel */ 202 int udp_connect; 203 204 /** the target fetch policy for the iterator */ 205 char* target_fetch_policy; 206 /** percent*10, how many times in 1000 to pick from the fastest 207 * destinations */ 208 int fast_server_permil; 209 /** number of fastest server to select from */ 210 size_t fast_server_num; 211 212 /** automatic interface for incoming messages. Uses ipv6 remapping, 213 * and recvmsg/sendmsg ancillary data to detect interfaces, boolean */ 214 int if_automatic; 215 /** extra ports to open if if_automatic enabled, or NULL for default */ 216 char* if_automatic_ports; 217 /** SO_RCVBUF size to set on port 53 UDP socket */ 218 size_t so_rcvbuf; 219 /** SO_SNDBUF size to set on port 53 UDP socket */ 220 size_t so_sndbuf; 221 /** SO_REUSEPORT requested on port 53 sockets */ 222 int so_reuseport; 223 /** IP_TRANSPARENT socket option requested on port 53 sockets */ 224 int ip_transparent; 225 /** IP_FREEBIND socket option request on port 53 sockets */ 226 int ip_freebind; 227 /** IP_TOS socket option requested on port 53 sockets */ 228 int ip_dscp; 229 230 /** number of interfaces to open. If 0 default all interfaces. */ 231 int num_ifs; 232 /** interface description strings (IP addresses) */ 233 char **ifs; 234 235 /** number of outgoing interfaces to open. 236 * If 0 default all interfaces. */ 237 int num_out_ifs; 238 /** outgoing interface description strings (IP addresses) */ 239 char **out_ifs; 240 241 /** the root hints */ 242 struct config_strlist* root_hints; 243 /** the stub definitions, linked list */ 244 struct config_stub* stubs; 245 /** the forward zone definitions, linked list */ 246 struct config_stub* forwards; 247 /** the auth zone definitions, linked list */ 248 struct config_auth* auths; 249 /** the views definitions, linked list */ 250 struct config_view* views; 251 /** list of donotquery addresses, linked list */ 252 struct config_strlist* donotqueryaddrs; 253 #ifdef CLIENT_SUBNET 254 /** list of servers we send edns-client-subnet option to and 255 * accept option from, linked list */ 256 struct config_strlist* client_subnet; 257 /** list of zones we send edns-client-subnet option for */ 258 struct config_strlist* client_subnet_zone; 259 /** opcode assigned by IANA for edns0-client-subnet option */ 260 uint16_t client_subnet_opcode; 261 /** Do not check whitelist if incoming query contains an ECS record */ 262 int client_subnet_always_forward; 263 /** Subnet length we are willing to give up privacy for */ 264 uint8_t max_client_subnet_ipv4; 265 uint8_t max_client_subnet_ipv6; 266 /** Minimum subnet length we are willing to answer */ 267 uint8_t min_client_subnet_ipv4; 268 uint8_t min_client_subnet_ipv6; 269 /** Max number of nodes in the ECS radix tree */ 270 uint32_t max_ecs_tree_size_ipv4; 271 uint32_t max_ecs_tree_size_ipv6; 272 #endif 273 /** list of access control entries, linked list */ 274 struct config_str2list* acls; 275 /** use default localhost donotqueryaddr entries */ 276 int donotquery_localhost; 277 278 /** list of tcp connection limitss, linked list */ 279 struct config_str2list* tcp_connection_limits; 280 281 /** harden against very small edns buffer sizes */ 282 int harden_short_bufsize; 283 /** harden against very large query sizes */ 284 int harden_large_queries; 285 /** harden against spoofed glue (out of zone data) */ 286 int harden_glue; 287 /** harden against receiving no DNSSEC data for trust anchor */ 288 int harden_dnssec_stripped; 289 /** harden against queries that fall under known nxdomain names */ 290 int harden_below_nxdomain; 291 /** harden the referral path, query for NS,A,AAAA and validate */ 292 int harden_referral_path; 293 /** harden against algorithm downgrade */ 294 int harden_algo_downgrade; 295 /** use 0x20 bits in query as random ID bits */ 296 int use_caps_bits_for_id; 297 /** 0x20 whitelist, domains that do not use capsforid */ 298 struct config_strlist* caps_whitelist; 299 /** strip away these private addrs from answers, no DNS Rebinding */ 300 struct config_strlist* private_address; 301 /** allow domain (and subdomains) to use private address space */ 302 struct config_strlist* private_domain; 303 /** what threshold for unwanted action. */ 304 size_t unwanted_threshold; 305 /** the number of seconds maximal TTL used for RRsets and messages */ 306 int max_ttl; 307 /** the number of seconds minimum TTL used for RRsets and messages */ 308 int min_ttl; 309 /** the number of seconds maximal negative TTL for SOA in auth */ 310 int max_negative_ttl; 311 /** if prefetching of messages should be performed. */ 312 int prefetch; 313 /** if prefetching of DNSKEYs should be performed. */ 314 int prefetch_key; 315 /** deny queries of type ANY with an empty answer */ 316 int deny_any; 317 318 /** chrootdir, if not "" or chroot will be done */ 319 char* chrootdir; 320 /** username to change to, if not "". */ 321 char* username; 322 /** working directory */ 323 char* directory; 324 /** filename to log to. */ 325 char* logfile; 326 /** pidfile to write pid to. */ 327 char* pidfile; 328 329 /** should log messages be sent to syslogd */ 330 int use_syslog; 331 /** log timestamp in ascii UTC */ 332 int log_time_ascii; 333 /** log queries with one line per query */ 334 int log_queries; 335 /** log replies with one line per reply */ 336 int log_replies; 337 /** tag log_queries and log_replies for filtering */ 338 int log_tag_queryreply; 339 /** log every local-zone hit **/ 340 int log_local_actions; 341 /** log servfails with a reason */ 342 int log_servfail; 343 /** log identity to report */ 344 char* log_identity; 345 346 /** do not report identity (id.server, hostname.bind) */ 347 int hide_identity; 348 /** do not report version (version.server, version.bind) */ 349 int hide_version; 350 /** do not report trustanchor (trustanchor.unbound) */ 351 int hide_trustanchor; 352 /** do not report the User-Agent HTTP header */ 353 int hide_http_user_agent; 354 /** identity, hostname is returned if "". */ 355 char* identity; 356 /** version, package version returned if "". */ 357 char* version; 358 /** User-Agent for HTTP header */ 359 char* http_user_agent; 360 /** nsid */ 361 char *nsid_cfg_str; 362 uint8_t *nsid; 363 uint16_t nsid_len; 364 365 /** the module configuration string */ 366 char* module_conf; 367 368 /** files with trusted DS and DNSKEYs in zonefile format, list */ 369 struct config_strlist* trust_anchor_file_list; 370 /** list of trustanchor keys, linked list */ 371 struct config_strlist* trust_anchor_list; 372 /** files with 5011 autotrust tracked keys */ 373 struct config_strlist* auto_trust_anchor_file_list; 374 /** files with trusted DNSKEYs in named.conf format, list */ 375 struct config_strlist* trusted_keys_file_list; 376 /** insecure domain list */ 377 struct config_strlist* domain_insecure; 378 /** send key tag query */ 379 int trust_anchor_signaling; 380 /** enable root key sentinel */ 381 int root_key_sentinel; 382 383 /** if not 0, this value is the validation date for RRSIGs */ 384 int32_t val_date_override; 385 /** the minimum for signature clock skew */ 386 int32_t val_sig_skew_min; 387 /** the maximum for signature clock skew */ 388 int32_t val_sig_skew_max; 389 /** max number of query restarts, number of IPs to probe */ 390 int32_t val_max_restart; 391 /** this value sets the number of seconds before revalidating bogus */ 392 int bogus_ttl; 393 /** should validator clean additional section for secure msgs */ 394 int val_clean_additional; 395 /** log bogus messages by the validator */ 396 int val_log_level; 397 /** squelch val_log_level to log - this is library goes to callback */ 398 int val_log_squelch; 399 /** should validator allow bogus messages to go through */ 400 int val_permissive_mode; 401 /** use cached NSEC records to synthesise (negative) answers */ 402 int aggressive_nsec; 403 /** ignore the CD flag in incoming queries and refuse them bogus data */ 404 int ignore_cd; 405 /** serve expired entries and prefetch them */ 406 int serve_expired; 407 /** serve expired entries until TTL after expiration */ 408 int serve_expired_ttl; 409 /** reset serve expired TTL after failed update attempt */ 410 int serve_expired_ttl_reset; 411 /** TTL for the serve expired replies */ 412 int serve_expired_reply_ttl; 413 /** serve expired entries only after trying to update the entries and this 414 * timeout (in milliseconds) is reached */ 415 int serve_expired_client_timeout; 416 /** serve EDE code 3 - Stale Answer (RFC8914) for expired entries */ 417 int ede_serve_expired; 418 /** serve original TTLs rather than decrementing ones */ 419 int serve_original_ttl; 420 /** nsec3 maximum iterations per key size, string */ 421 char* val_nsec3_key_iterations; 422 /** if zonemd failures are permitted, only logged */ 423 int zonemd_permissive_mode; 424 /** autotrust add holddown time, in seconds */ 425 unsigned int add_holddown; 426 /** autotrust del holddown time, in seconds */ 427 unsigned int del_holddown; 428 /** autotrust keep_missing time, in seconds. 0 is forever. */ 429 unsigned int keep_missing; 430 /** permit small holddown values, allowing 5011 rollover very fast */ 431 int permit_small_holddown; 432 433 /** size of the key cache */ 434 size_t key_cache_size; 435 /** slabs in the key cache. */ 436 size_t key_cache_slabs; 437 /** size of the neg cache */ 438 size_t neg_cache_size; 439 440 /** local zones config */ 441 struct config_str2list* local_zones; 442 /** local zones nodefault list */ 443 struct config_strlist* local_zones_nodefault; 444 #ifdef USE_IPSET 445 /** local zones ipset list */ 446 struct config_strlist* local_zones_ipset; 447 #endif 448 /** do not add any default local zone */ 449 int local_zones_disable_default; 450 /** local data RRs configured */ 451 struct config_strlist* local_data; 452 /** local zone override types per netblock */ 453 struct config_str3list* local_zone_overrides; 454 /** unblock lan zones (reverse lookups for AS112 zones) */ 455 int unblock_lan_zones; 456 /** insecure lan zones (don't validate AS112 zones) */ 457 int insecure_lan_zones; 458 /** list of zonename, tagbitlist */ 459 struct config_strbytelist* local_zone_tags; 460 /** list of aclname, tagbitlist */ 461 struct config_strbytelist* acl_tags; 462 /** list of aclname, tagname, localzonetype */ 463 struct config_str3list* acl_tag_actions; 464 /** list of aclname, tagname, redirectdata */ 465 struct config_str3list* acl_tag_datas; 466 /** list of aclname, view*/ 467 struct config_str2list* acl_view; 468 /** list of interface action entries, linked list */ 469 struct config_str2list* interface_actions; 470 /** list of interface, tagbitlist */ 471 struct config_strbytelist* interface_tags; 472 /** list of interface, tagname, localzonetype */ 473 struct config_str3list* interface_tag_actions; 474 /** list of interface, tagname, redirectdata */ 475 struct config_str3list* interface_tag_datas; 476 /** list of interface, view*/ 477 struct config_str2list* interface_view; 478 /** list of IP-netblock, tagbitlist */ 479 struct config_strbytelist* respip_tags; 480 /** list of response-driven access control entries, linked list */ 481 struct config_str2list* respip_actions; 482 /** RRs configured for response-driven access controls */ 483 struct config_str2list* respip_data; 484 /** tag list, array with tagname[i] is malloced string */ 485 char** tagname; 486 /** number of items in the taglist */ 487 int num_tags; 488 489 /** remote control section. enable toggle. */ 490 int remote_control_enable; 491 /** the interfaces the remote control should listen on */ 492 struct config_strlist_head control_ifs; 493 /** if the use-cert option is set */ 494 int control_use_cert; 495 /** port number for the control port */ 496 int control_port; 497 /** private key file for server */ 498 char* server_key_file; 499 /** certificate file for server */ 500 char* server_cert_file; 501 /** private key file for unbound-control */ 502 char* control_key_file; 503 /** certificate file for unbound-control */ 504 char* control_cert_file; 505 506 /** Python script file */ 507 struct config_strlist* python_script; 508 509 /** Dynamic library file */ 510 struct config_strlist* dynlib_file; 511 512 /** Use systemd socket activation. */ 513 int use_systemd; 514 515 /** daemonize, i.e. fork into the background. */ 516 int do_daemonize; 517 518 /* minimal response when positive answer */ 519 int minimal_responses; 520 521 /* RRSet roundrobin */ 522 int rrset_roundrobin; 523 524 /* wait time for unknown server in msec */ 525 int unknown_server_time_limit; 526 527 /* maximum UDP response size */ 528 size_t max_udp_size; 529 530 /* DNS64 prefix */ 531 char* dns64_prefix; 532 533 /* Synthetize all AAAA record despite the presence of an authoritative one */ 534 int dns64_synthall; 535 /** ignore AAAAs for these domain names and use A record anyway */ 536 struct config_strlist* dns64_ignore_aaaa; 537 538 /** true to enable dnstap support */ 539 int dnstap; 540 /** using bidirectional frame streams if true */ 541 int dnstap_bidirectional; 542 /** dnstap socket path */ 543 char* dnstap_socket_path; 544 /** dnstap IP */ 545 char* dnstap_ip; 546 /** dnstap TLS enable */ 547 int dnstap_tls; 548 /** dnstap tls server authentication name */ 549 char* dnstap_tls_server_name; 550 /** dnstap server cert bundle */ 551 char* dnstap_tls_cert_bundle; 552 /** dnstap client key for client authentication */ 553 char* dnstap_tls_client_key_file; 554 /** dnstap client cert for client authentication */ 555 char* dnstap_tls_client_cert_file; 556 /** true to send "identity" via dnstap */ 557 int dnstap_send_identity; 558 /** true to send "version" via dnstap */ 559 int dnstap_send_version; 560 /** dnstap "identity", hostname is used if "". */ 561 char* dnstap_identity; 562 /** dnstap "version", package version is used if "". */ 563 char* dnstap_version; 564 565 /** true to log dnstap RESOLVER_QUERY message events */ 566 int dnstap_log_resolver_query_messages; 567 /** true to log dnstap RESOLVER_RESPONSE message events */ 568 int dnstap_log_resolver_response_messages; 569 /** true to log dnstap CLIENT_QUERY message events */ 570 int dnstap_log_client_query_messages; 571 /** true to log dnstap CLIENT_RESPONSE message events */ 572 int dnstap_log_client_response_messages; 573 /** true to log dnstap FORWARDER_QUERY message events */ 574 int dnstap_log_forwarder_query_messages; 575 /** true to log dnstap FORWARDER_RESPONSE message events */ 576 int dnstap_log_forwarder_response_messages; 577 578 /** true to disable DNSSEC lameness check in iterator */ 579 int disable_dnssec_lame_check; 580 581 /** ratelimit for ip addresses. 0 is off, otherwise qps (unless overridden) */ 582 int ip_ratelimit; 583 /** number of slabs for ip_ratelimit cache */ 584 size_t ip_ratelimit_slabs; 585 /** memory size in bytes for ip_ratelimit cache */ 586 size_t ip_ratelimit_size; 587 /** ip_ratelimit factor, 0 blocks all, 10 allows 1/10 of traffic */ 588 int ip_ratelimit_factor; 589 /** ratelimit backoff, when on, if the limit is reached it is 590 * considered an attack and it backs off until 'demand' decreases over 591 * the RATE_WINDOW. */ 592 int ip_ratelimit_backoff; 593 594 /** ratelimit for domains. 0 is off, otherwise qps (unless overridden) */ 595 int ratelimit; 596 /** number of slabs for ratelimit cache */ 597 size_t ratelimit_slabs; 598 /** memory size in bytes for ratelimit cache */ 599 size_t ratelimit_size; 600 /** ratelimits for domain (exact match) */ 601 struct config_str2list* ratelimit_for_domain; 602 /** ratelimits below domain */ 603 struct config_str2list* ratelimit_below_domain; 604 /** ratelimit factor, 0 blocks all, 10 allows 1/10 of traffic */ 605 int ratelimit_factor; 606 /** ratelimit backoff, when on, if the limit is reached it is 607 * considered an attack and it backs off until 'demand' decreases over 608 * the RATE_WINDOW. */ 609 int ratelimit_backoff; 610 611 /** number of retries on outgoing queries */ 612 int outbound_msg_retry; 613 /** max sent queries per qstate; resets on query restarts (e.g., 614 * CNAMES) and referrals */ 615 int max_sent_count; 616 /** max number of query restarts; determines max length of CNAME chain */ 617 int max_query_restarts; 618 /** minimise outgoing QNAME and hide original QTYPE if possible */ 619 int qname_minimisation; 620 /** minimise QNAME in strict mode, minimise according to RFC. 621 * Do not apply fallback */ 622 int qname_minimisation_strict; 623 /** SHM data - true if shm is enabled */ 624 int shm_enable; 625 /** SHM data - key for the shm */ 626 int shm_key; 627 628 /** list of EDNS client string entries, linked list */ 629 struct config_str2list* edns_client_strings; 630 /** EDNS opcode to use for EDNS client strings */ 631 uint16_t edns_client_string_opcode; 632 633 /** DNSCrypt */ 634 /** true to enable dnscrypt */ 635 int dnscrypt; 636 /** port on which to provide dnscrypt service */ 637 int dnscrypt_port; 638 /** provider name 2.dnscrypt-cert.example.com */ 639 char* dnscrypt_provider; 640 /** dnscrypt secret keys 1.key */ 641 struct config_strlist* dnscrypt_secret_key; 642 /** dnscrypt provider certs 1.cert */ 643 struct config_strlist* dnscrypt_provider_cert; 644 /** dnscrypt provider certs 1.cert which have been rotated and should not be 645 * advertised through DNS's providername TXT record but are required to be 646 * able to handle existing traffic using the old cert. */ 647 struct config_strlist* dnscrypt_provider_cert_rotated; 648 /** memory size in bytes for dnscrypt shared secrets cache */ 649 size_t dnscrypt_shared_secret_cache_size; 650 /** number of slabs for dnscrypt shared secrets cache */ 651 size_t dnscrypt_shared_secret_cache_slabs; 652 /** memory size in bytes for dnscrypt nonces cache */ 653 size_t dnscrypt_nonce_cache_size; 654 /** number of slabs for dnscrypt nonces cache */ 655 size_t dnscrypt_nonce_cache_slabs; 656 657 /** EDNS padding according to RFC7830 and RFC8467 */ 658 /** true to enable padding of responses (default: on) */ 659 int pad_responses; 660 /** block size with which to pad encrypted responses (default: 468) */ 661 size_t pad_responses_block_size; 662 /** true to enable padding of queries (default: on) */ 663 int pad_queries; 664 /** block size with which to pad encrypted queries (default: 128) */ 665 size_t pad_queries_block_size; 666 667 /** IPsec module */ 668 #ifdef USE_IPSECMOD 669 /** false to bypass the IPsec module */ 670 int ipsecmod_enabled; 671 /** whitelisted domains for ipsecmod */ 672 struct config_strlist* ipsecmod_whitelist; 673 /** path to external hook */ 674 char* ipsecmod_hook; 675 /** true to proceed even with a bogus IPSECKEY */ 676 int ipsecmod_ignore_bogus; 677 /** max TTL for the A/AAAA records that call the hook */ 678 int ipsecmod_max_ttl; 679 /** false to proceed even when ipsecmod_hook fails */ 680 int ipsecmod_strict; 681 #endif 682 683 /* cachedb module */ 684 #ifdef USE_CACHEDB 685 /** backend DB name */ 686 char* cachedb_backend; 687 /** secret seed for hash key calculation */ 688 char* cachedb_secret; 689 #ifdef USE_REDIS 690 /** redis server's IP address or host name */ 691 char* redis_server_host; 692 /** redis server's TCP port */ 693 int redis_server_port; 694 /** timeout (in ms) for communication with the redis server */ 695 int redis_timeout; 696 /** set timeout on redis records based on DNS response ttl */ 697 int redis_expire_records; 698 #endif 699 #endif 700 701 /* ipset module */ 702 #ifdef USE_IPSET 703 char* ipset_name_v4; 704 char* ipset_name_v6; 705 #endif 706 /** respond with Extended DNS Errors (RFC8914) */ 707 int ede; 708 }; 709 710 /** from cfg username, after daemonize setup performed */ 711 extern uid_t cfg_uid; 712 /** from cfg username, after daemonize setup performed */ 713 extern gid_t cfg_gid; 714 /** debug and enable small timeouts */ 715 extern int autr_permit_small_holddown; 716 /** size (in bytes) of stream wait buffers max */ 717 extern size_t stream_wait_max; 718 /** size (in bytes) of all total HTTP2 query buffers max */ 719 extern size_t http2_query_buffer_max; 720 /** size (in bytes) of all total HTTP2 response buffers max */ 721 extern size_t http2_response_buffer_max; 722 723 /** 724 * Stub config options 725 */ 726 struct config_stub { 727 /** next in list */ 728 struct config_stub* next; 729 /** domain name (in text) of the stub apex domain */ 730 char* name; 731 /** list of stub nameserver hosts (domain name) */ 732 struct config_strlist* hosts; 733 /** list of stub nameserver addresses (IP address) */ 734 struct config_strlist* addrs; 735 /** if stub-prime is set */ 736 int isprime; 737 /** if forward-first is set (failover to without if fails) */ 738 int isfirst; 739 /** use tcp for queries to this stub */ 740 int tcp_upstream; 741 /** use SSL for queries to this stub */ 742 int ssl_upstream; 743 /*** no cache */ 744 int no_cache; 745 }; 746 747 /** 748 * Auth config options 749 */ 750 struct config_auth { 751 /** next in list */ 752 struct config_auth* next; 753 /** domain name (in text) of the auth apex domain */ 754 char* name; 755 /** list of masters */ 756 struct config_strlist* masters; 757 /** list of urls */ 758 struct config_strlist* urls; 759 /** list of allow-notify */ 760 struct config_strlist* allow_notify; 761 /** zonefile (or NULL) */ 762 char* zonefile; 763 /** provide downstream answers */ 764 int for_downstream; 765 /** provide upstream answers */ 766 int for_upstream; 767 /** fallback to recursion to authorities if zone expired and other 768 * reasons perhaps (like, query bogus) */ 769 int fallback_enabled; 770 /** this zone is used to create local-zone policies */ 771 int isrpz; 772 /** rpz tags (or NULL) */ 773 uint8_t* rpz_taglist; 774 /** length of the taglist (in bytes) */ 775 size_t rpz_taglistlen; 776 /** Override RPZ action for this zone, regardless of zone content */ 777 char* rpz_action_override; 778 /** Log when this RPZ policy is applied */ 779 int rpz_log; 780 /** Display this name in the log when RPZ policy is applied */ 781 char* rpz_log_name; 782 /** Always reply with this CNAME target if the cname override action is 783 * used */ 784 char* rpz_cname; 785 /** signal nxdomain block with unset RA */ 786 int rpz_signal_nxdomain_ra; 787 /** Check ZONEMD records for this zone */ 788 int zonemd_check; 789 /** Reject absence of ZONEMD records, zone must have one */ 790 int zonemd_reject_absence; 791 }; 792 793 /** 794 * View config options 795 */ 796 struct config_view { 797 /** next in list */ 798 struct config_view* next; 799 /** view name */ 800 char* name; 801 /** local zones */ 802 struct config_str2list* local_zones; 803 /** local data RRs */ 804 struct config_strlist* local_data; 805 /** local zones nodefault list */ 806 struct config_strlist* local_zones_nodefault; 807 #ifdef USE_IPSET 808 /** local zones ipset list */ 809 struct config_strlist* local_zones_ipset; 810 #endif 811 /** Fallback to global local_zones when there is no match in the view 812 * view specific tree. 1 for yes, 0 for no */ 813 int isfirst; 814 /** predefined actions for particular IP address responses */ 815 struct config_str2list* respip_actions; 816 /** data complementing the 'redirect' response IP actions */ 817 struct config_str2list* respip_data; 818 }; 819 820 /** 821 * List of strings for config options 822 */ 823 struct config_strlist { 824 /** next item in list */ 825 struct config_strlist* next; 826 /** config option string */ 827 char* str; 828 }; 829 830 /** 831 * List of two strings for config options 832 */ 833 struct config_str2list { 834 /** next item in list */ 835 struct config_str2list* next; 836 /** first string */ 837 char* str; 838 /** second string */ 839 char* str2; 840 }; 841 842 /** 843 * List of three strings for config options 844 */ 845 struct config_str3list { 846 /** next item in list */ 847 struct config_str3list* next; 848 /** first string */ 849 char* str; 850 /** second string */ 851 char* str2; 852 /** third string */ 853 char* str3; 854 }; 855 856 857 /** 858 * List of string, bytestring for config options 859 */ 860 struct config_strbytelist { 861 /** next item in list */ 862 struct config_strbytelist* next; 863 /** first string */ 864 char* str; 865 /** second bytestring */ 866 uint8_t* str2; 867 size_t str2len; 868 }; 869 870 /** 871 * Create config file structure. Filled with default values. 872 * @return: the new structure or NULL on memory error. 873 */ 874 struct config_file* config_create(void); 875 876 /** 877 * Create config file structure for library use. Filled with default values. 878 * @return: the new structure or NULL on memory error. 879 */ 880 struct config_file* config_create_forlib(void); 881 882 /** 883 * Read the config file from the specified filename. 884 * @param config: where options are stored into, must be freshly created. 885 * @param filename: name of configfile. If NULL nothing is done. 886 * @param chroot: if not NULL, the chroot dir currently in use (for include). 887 * @return: false on error. In that case errno is set, ENOENT means 888 * file not found. 889 */ 890 int config_read(struct config_file* config, const char* filename, 891 const char* chroot); 892 893 /** 894 * Destroy the config file structure. 895 * @param config: to delete. 896 */ 897 void config_delete(struct config_file* config); 898 899 /** 900 * Apply config to global constants; this routine is called in single thread. 901 * @param config: to apply. Side effect: global constants change. 902 */ 903 void config_apply(struct config_file* config); 904 905 /** 906 * Find username, sets cfg_uid and cfg_gid. 907 * @param config: the config structure. 908 */ 909 void config_lookup_uid(struct config_file* config); 910 911 /** 912 * Set the given keyword to the given value. 913 * @param config: where to store config 914 * @param option: option name, including the ':' character. 915 * @param value: value, this string is copied if needed, or parsed. 916 * The caller owns the value string. 917 * @return 0 on error (malloc or syntax error). 918 */ 919 int config_set_option(struct config_file* config, const char* option, 920 const char* value); 921 922 /** 923 * Call print routine for the given option. 924 * @param cfg: config. 925 * @param opt: option name without trailing :. 926 * This is different from config_set_option. 927 * @param func: print func, called as (str, arg) for every data element. 928 * @param arg: user argument for print func. 929 * @return false if the option name is not supported (syntax error). 930 */ 931 int config_get_option(struct config_file* cfg, const char* opt, 932 void (*func)(char*,void*), void* arg); 933 934 /** 935 * Get an option and return strlist 936 * @param cfg: config file 937 * @param opt: option name. 938 * @param list: list is returned here. malloced, caller must free it. 939 * @return 0=OK, 1=syntax error, 2=malloc failed. 940 */ 941 int config_get_option_list(struct config_file* cfg, const char* opt, 942 struct config_strlist** list); 943 944 /** 945 * Get an option and collate results into string 946 * @param cfg: config file 947 * @param opt: option name. 948 * @param str: string. malloced, caller must free it. 949 * @return 0=OK, 1=syntax error, 2=malloc failed. 950 */ 951 int config_get_option_collate(struct config_file* cfg, const char* opt, 952 char** str); 953 954 /** 955 * function to print to a file, use as func with config_get_option. 956 * @param line: text to print. \n appended. 957 * @param arg: pass a FILE*, like stdout. 958 */ 959 void config_print_func(char* line, void* arg); 960 961 /** 962 * function to collate the text strings into a strlist_head. 963 * @param line: text to append. 964 * @param arg: pass a strlist_head structure. zeroed on start. 965 */ 966 void config_collate_func(char* line, void* arg); 967 968 /** 969 * take a strlist_head list and return a malloc string. separated with newline. 970 * @param list: strlist first to collate. zeroes return "". 971 * @return NULL on malloc failure. Or if malloc failure happened in strlist. 972 */ 973 char* config_collate_cat(struct config_strlist* list); 974 975 /** 976 * Append text at end of list. 977 * @param list: list head. zeroed at start. 978 * @param item: new item. malloced by caller. if NULL the insertion fails. 979 * @return true on success. 980 * on fail the item is free()ed. 981 */ 982 int cfg_strlist_append(struct config_strlist_head* list, char* item); 983 984 /** 985 * Searches the end of a string list and appends the given text. 986 * @param head: pointer to strlist head variable. 987 * @param item: new item. malloced by caller. if NULL the insertion fails. 988 * @return true on success. 989 */ 990 int cfg_strlist_append_ex(struct config_strlist** head, char* item); 991 992 /** 993 * Find string in strlist. 994 * @param head: pointer to strlist head variable. 995 * @param item: the item to search for. 996 * @return: the element in the list when found, NULL otherwise. 997 */ 998 struct config_strlist* cfg_strlist_find(struct config_strlist* head, 999 const char* item); 1000 1001 /** 1002 * Insert string into strlist. 1003 * @param head: pointer to strlist head variable. 1004 * @param item: new item. malloced by caller. If NULL the insertion fails. 1005 * @return: true on success. 1006 * on fail, the item is free()d. 1007 */ 1008 int cfg_strlist_insert(struct config_strlist** head, char* item); 1009 1010 /** insert with region for allocation. */ 1011 int cfg_region_strlist_insert(struct regional* region, 1012 struct config_strlist** head, char* item); 1013 1014 /** 1015 * Insert string into str2list. 1016 * @param head: pointer to str2list head variable. 1017 * @param item: new item. malloced by caller. If NULL the insertion fails. 1018 * @param i2: 2nd string, malloced by caller. If NULL the insertion fails. 1019 * @return: true on success. 1020 * on fail, the item and i2 are free()d. 1021 */ 1022 int cfg_str2list_insert(struct config_str2list** head, char* item, char* i2); 1023 1024 /** 1025 * Insert string into str3list. 1026 * @param head: pointer to str3list head variable. 1027 * @param item: new item. malloced by caller. If NULL the insertion fails. 1028 * @param i2: 2nd string, malloced by caller. If NULL the insertion fails. 1029 * @param i3: 3rd string, malloced by caller. If NULL the insertion fails. 1030 * @return: true on success. 1031 */ 1032 int cfg_str3list_insert(struct config_str3list** head, char* item, char* i2, 1033 char* i3); 1034 1035 /** 1036 * Insert string into strbytelist. 1037 * @param head: pointer to strbytelist head variable. 1038 * @param item: new item. malloced by caller. If NULL the insertion fails. 1039 * @param i2: 2nd string, malloced by caller. If NULL the insertion fails. 1040 * @param i2len: length of the i2 bytestring. 1041 * @return: true on success. 1042 */ 1043 int cfg_strbytelist_insert(struct config_strbytelist** head, char* item, 1044 uint8_t* i2, size_t i2len); 1045 1046 /** 1047 * Find stub in config list, also returns prevptr (for deletion). 1048 * @param pp: call routine with pointer to a pointer to the start of the list, 1049 * if the stub is found, on exit, the value contains a pointer to the 1050 * next pointer that points to the found element (or to the list start 1051 * pointer if it is the first element). 1052 * @param nm: name of stub to find. 1053 * @return: pointer to config_stub if found, or NULL if not found. 1054 */ 1055 struct config_stub* cfg_stub_find(struct config_stub*** pp, const char* nm); 1056 1057 /** 1058 * Delete items in config string list. 1059 * @param list: list. 1060 */ 1061 void config_delstrlist(struct config_strlist* list); 1062 1063 /** 1064 * Delete items in config double string list. 1065 * @param list: list. 1066 */ 1067 void config_deldblstrlist(struct config_str2list* list); 1068 1069 /** 1070 * Delete items in config triple string list. 1071 * @param list: list. 1072 */ 1073 void config_deltrplstrlist(struct config_str3list* list); 1074 1075 /** delete string array */ 1076 void config_del_strarray(char** array, int num); 1077 1078 /** delete stringbytelist */ 1079 void config_del_strbytelist(struct config_strbytelist* list); 1080 1081 /** 1082 * Delete a stub item 1083 * @param p: stub item 1084 */ 1085 void config_delstub(struct config_stub* p); 1086 1087 /** 1088 * Delete items in config stub list. 1089 * @param list: list. 1090 */ 1091 void config_delstubs(struct config_stub* list); 1092 1093 /** 1094 * Delete an auth item 1095 * @param p: auth item 1096 */ 1097 void config_delauth(struct config_auth* p); 1098 1099 /** 1100 * Delete items in config auth list. 1101 * @param list: list. 1102 */ 1103 void config_delauths(struct config_auth* list); 1104 1105 /** 1106 * Delete a view item 1107 * @param p: view item 1108 */ 1109 void config_delview(struct config_view* p); 1110 1111 /** 1112 * Delete items in config view list. 1113 * @param list: list. 1114 */ 1115 void config_delviews(struct config_view* list); 1116 1117 /** check if config for remote control turns on IP-address interface 1118 * with certificates or a named pipe without certificates. */ 1119 int options_remote_is_address(struct config_file* cfg); 1120 1121 /** 1122 * Convert 14digit to time value 1123 * @param str: string of 14 digits 1124 * @return time value or 0 for error. 1125 */ 1126 time_t cfg_convert_timeval(const char* str); 1127 1128 /** 1129 * Count number of values in the string. 1130 * format ::= (sp num)+ sp 1131 * num ::= [-](0-9)+ 1132 * sp ::= (space|tab)* 1133 * 1134 * @param str: string 1135 * @return: 0 on parse error, or empty string, else 1136 * number of integer values in the string. 1137 */ 1138 int cfg_count_numbers(const char* str); 1139 1140 /** 1141 * Convert a 'nice' memory or file size into a bytecount 1142 * From '100k' to 102400. and so on. Understands kKmMgG. 1143 * k=1024, m=1024*1024, g=1024*1024*1024. 1144 * @param str: string 1145 * @param res: result is stored here, size in bytes. 1146 * @return: true if parsed correctly, or 0 on a parse error (and an error 1147 * is logged). 1148 */ 1149 int cfg_parse_memsize(const char* str, size_t* res); 1150 1151 /** 1152 * Parse nsid from string into binary nsid. nsid is either a hexadecimal 1153 * string or an ascii string prepended with ascii_ in which case the 1154 * characters after ascii_ are simply copied. 1155 * @param str: the string to parse. 1156 * @param nsid_len: returns length of nsid in bytes. 1157 * @return malloced bytes or NULL on parse error or malloc failure. 1158 */ 1159 uint8_t* cfg_parse_nsid(const char* str, uint16_t* nsid_len); 1160 1161 /** 1162 * Add a tag name to the config. It is added at the end with a new ID value. 1163 * @param cfg: the config structure. 1164 * @param tag: string (which is copied) with the name. 1165 * @return: false on alloc failure. 1166 */ 1167 int config_add_tag(struct config_file* cfg, const char* tag); 1168 1169 /** 1170 * Find tag ID in the tag list. 1171 * @param cfg: the config structure. 1172 * @param tag: string with tag name to search for. 1173 * @return: 0..(num_tags-1) with tag ID, or -1 if tagname is not found. 1174 */ 1175 int find_tag_id(struct config_file* cfg, const char* tag); 1176 1177 /** 1178 * parse taglist from string into bytestring with bitlist. 1179 * @param cfg: the config structure (with tagnames) 1180 * @param str: the string to parse. Parse puts 0 bytes in string. 1181 * @param listlen: returns length of in bytes. 1182 * @return malloced bytes with a bitlist of the tags. or NULL on parse error 1183 * or malloc failure. 1184 */ 1185 uint8_t* config_parse_taglist(struct config_file* cfg, char* str, 1186 size_t* listlen); 1187 1188 /** 1189 * convert tag bitlist to a malloced string with tag names. For debug output. 1190 * @param cfg: the config structure (with tagnames) 1191 * @param taglist: the tag bitlist. 1192 * @param len: length of the tag bitlist. 1193 * @return malloced string or NULL. 1194 */ 1195 char* config_taglist2str(struct config_file* cfg, uint8_t* taglist, 1196 size_t len); 1197 1198 /** 1199 * see if two taglists intersect (have tags in common). 1200 * @param list1: first tag bitlist. 1201 * @param list1len: length in bytes of first list. 1202 * @param list2: second tag bitlist. 1203 * @param list2len: length in bytes of second list. 1204 * @return true if there are tags in common, 0 if not. 1205 */ 1206 int taglist_intersect(uint8_t* list1, size_t list1len, const uint8_t* list2, 1207 size_t list2len); 1208 1209 /** 1210 * Parse local-zone directive into two strings and register it in the config. 1211 * @param cfg: to put it in. 1212 * @param val: argument strings to local-zone, "example.com nodefault". 1213 * @return: false on failure 1214 */ 1215 int cfg_parse_local_zone(struct config_file* cfg, const char* val); 1216 1217 /** 1218 * Mark "number" or "low-high" as available or not in ports array. 1219 * @param str: string in input 1220 * @param allow: give true if this range is permitted. 1221 * @param avail: the array from cfg. 1222 * @param num: size of the array (65536). 1223 * @return: true if parsed correctly, or 0 on a parse error (and an error 1224 * is logged). 1225 */ 1226 int cfg_mark_ports(const char* str, int allow, int* avail, int num); 1227 1228 /** 1229 * Get a condensed list of ports returned. allocated. 1230 * @param cfg: config file. 1231 * @param avail: the available ports array is returned here. 1232 * @return: number of ports in array or 0 on error. 1233 */ 1234 int cfg_condense_ports(struct config_file* cfg, int** avail); 1235 1236 /** 1237 * Apply system specific port range policy. 1238 * @param cfg: config file. 1239 * @param num: size of the array (65536). 1240 */ 1241 void cfg_apply_local_port_policy(struct config_file* cfg, int num); 1242 1243 /** 1244 * Scan ports available 1245 * @param avail: the array from cfg. 1246 * @param num: size of the array (65536). 1247 * @return the number of ports available for use. 1248 */ 1249 int cfg_scan_ports(int* avail, int num); 1250 1251 /** 1252 * Convert a filename to full pathname in original filesys 1253 * @param fname: the path name to convert. 1254 * Must not be null or empty. 1255 * @param cfg: config struct for chroot and chdir (if set). 1256 * @param use_chdir: if false, only chroot is applied. 1257 * @return pointer to malloced buffer which is: [chroot][chdir]fname 1258 * or NULL on malloc failure. 1259 */ 1260 char* fname_after_chroot(const char* fname, struct config_file* cfg, 1261 int use_chdir); 1262 1263 /** 1264 * Convert a ptr shorthand into a full reverse-notation PTR record. 1265 * @param str: input string, "IP name" 1266 * @return: malloced string "reversed-ip-name PTR name" 1267 */ 1268 char* cfg_ptr_reverse(char* str); 1269 1270 /** 1271 * Used during options parsing 1272 */ 1273 struct config_parser_state { 1274 /** name of file being parser */ 1275 char* filename; 1276 /** line number in the file, starts at 1 */ 1277 int line; 1278 /** number of errors encountered */ 1279 int errors; 1280 /** the result of parsing is stored here. */ 1281 struct config_file* cfg; 1282 /** the current chroot dir (or NULL if none) */ 1283 const char* chroot; 1284 /** if we are started in a toplevel, or not, after a force_toplevel */ 1285 int started_toplevel; 1286 }; 1287 1288 /** global config parser object used during config parsing */ 1289 extern struct config_parser_state* cfg_parser; 1290 /** init lex state */ 1291 void init_cfg_parse(void); 1292 /** lex in file */ 1293 extern FILE* ub_c_in; 1294 /** lex out file */ 1295 extern FILE* ub_c_out; 1296 /** the yacc lex generated parse function */ 1297 int ub_c_parse(void); 1298 /** the lexer function */ 1299 int ub_c_lex(void); 1300 /** wrap function */ 1301 int ub_c_wrap(void); 1302 /** parsing helpers: print error with file and line numbers */ 1303 void ub_c_error(const char* msg); 1304 /** parsing helpers: print error with file and line numbers */ 1305 void ub_c_error_msg(const char* fmt, ...) ATTR_FORMAT(printf, 1, 2); 1306 1307 #ifdef UB_ON_WINDOWS 1308 /** 1309 * Obtain registry string (if it exists). 1310 * @param key: key string 1311 * @param name: name of value to fetch. 1312 * @return malloced string with the result or NULL if it did not 1313 * exist on an error (logged with log_err) was encountered. 1314 */ 1315 char* w_lookup_reg_str(const char* key, const char* name); 1316 1317 /** Modify directory in options for module file name */ 1318 void w_config_adjust_directory(struct config_file* cfg); 1319 #endif /* UB_ON_WINDOWS */ 1320 1321 /** debug option for unit tests. */ 1322 extern int fake_dsa, fake_sha1; 1323 1324 /** see if interface is https, its port number == the https port number */ 1325 int if_is_https(const char* ifname, const char* port, int https_port); 1326 1327 /** 1328 * Return true if the config contains settings that enable https. 1329 * @param cfg: config information. 1330 * @return true if https ports are used for server. 1331 */ 1332 int cfg_has_https(struct config_file* cfg); 1333 1334 /** see if interface is PROXYv2, its port number == the proxy port number */ 1335 int if_is_pp2(const char* ifname, const char* port, 1336 struct config_strlist* proxy_protocol_port); 1337 1338 /** see if interface is DNSCRYPT, its port number == the dnscrypt port number */ 1339 int if_is_dnscrypt(const char* ifname, const char* port, int dnscrypt_port); 1340 #ifdef USE_LINUX_IP_LOCAL_PORT_RANGE 1341 #define LINUX_IP_LOCAL_PORT_RANGE_PATH "/proc/sys/net/ipv4/ip_local_port_range" 1342 #endif 1343 1344 #endif /* UTIL_CONFIG_FILE_H */ 1345 1346