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