2 * util/config_file.h - reads and stores the config file for unbound.
4 * Copyright (c) 2007, NLnet Labs. All rights reserved.
6 * This software is open source.
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9 * modification, are permitted provided that the following conditions
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33 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39 * This file contains functions for the config file.
42 #ifndef UTIL_CONFIG_FILE_H
43 #define UTIL_CONFIG_FILE_H
47 struct config_strlist;
48 struct config_str2list;
49 struct config_str3list;
50 struct config_strbytelist;
53 struct ub_packed_rrset_key;
56 /** List head for strlist processing, used for append operation. */
57 struct config_strlist_head {
58 /** first in list of text items */
59 struct config_strlist* first;
60 /** last in list of text items */
61 struct config_strlist* last;
65 * The configuration options.
66 * Strings are malloced.
69 /** verbosity level as specified in the config file */
72 /** statistics interval (in seconds) */
74 /** if false, statistics values are reset after printing them */
76 /** if true, the statistics are kept in greater detail */
79 /** number of threads to create */
82 /** port on which queries are answered. */
84 /** do ip4 query support. */
86 /** do ip6 query support. */
88 /** prefer ip6 upstream queries. */
90 /** do udp query support. */
92 /** do tcp query support. */
94 /** tcp upstream queries (no UDP upstream queries) */
96 /** udp upstream enabled when no UDP downstream is enabled (do_udp no)*/
97 int udp_upstream_without_downstream;
98 /** maximum segment size of tcp socket which queries are answered */
100 /** maximum segment size of tcp socket for outgoing queries */
101 int outgoing_tcp_mss;
102 /** tcp idle timeout, in msec */
103 int tcp_idle_timeout;
104 /** do edns tcp keepalive */
105 int do_tcp_keepalive;
106 /** tcp keepalive timeout, in msec */
107 int tcp_keepalive_timeout;
109 /** private key file for dnstcp-ssl service (enabled if not NULL) */
110 char* ssl_service_key;
111 /** public key file for dnstcp-ssl service */
112 char* ssl_service_pem;
113 /** port on which to provide ssl service */
115 /** if outgoing tcp connections use SSL */
117 /** cert bundle for outgoing connections */
118 char* tls_cert_bundle;
119 /** should the system certificate store get added to the cert bundle */
121 /** additional tls ports */
122 struct config_strlist* tls_additional_port;
124 /** outgoing port range number of ports (per thread) */
125 int outgoing_num_ports;
126 /** number of outgoing tcp buffers per (per thread) */
127 size_t outgoing_num_tcp;
128 /** number of incoming tcp buffers per (per thread) */
129 size_t incoming_num_tcp;
130 /** allowed udp port numbers, array with 0 if not allowed */
131 int* outgoing_avail_ports;
133 /** EDNS buffer size to use */
134 size_t edns_buffer_size;
135 /** number of bytes buffer size for DNS messages */
136 size_t msg_buffer_size;
137 /** size of the message cache */
138 size_t msg_cache_size;
139 /** slabs in the message cache. */
140 size_t msg_cache_slabs;
141 /** number of queries every thread can service */
142 size_t num_queries_per_thread;
143 /** number of msec to wait before items can be jostled out */
145 /** size of the rrset cache */
146 size_t rrset_cache_size;
147 /** slabs in the rrset cache */
148 size_t rrset_cache_slabs;
149 /** host cache ttl in seconds */
151 /** number of slabs in the infra host cache */
152 size_t infra_cache_slabs;
153 /** max number of hosts in the infra cache */
154 size_t infra_cache_numhosts;
155 /** min value for infra cache rtt */
156 int infra_cache_min_rtt;
157 /** delay close of udp-timeouted ports, if 0 no delayclose. in msec */
160 /** the target fetch policy for the iterator */
161 char* target_fetch_policy;
162 /** percent*10, how many times in 1000 to pick low rtt destinations */
164 /** what time in msec is a low rtt destination */
167 /** automatic interface for incoming messages. Uses ipv6 remapping,
168 * and recvmsg/sendmsg ancillary data to detect interfaces, boolean */
170 /** SO_RCVBUF size to set on port 53 UDP socket */
172 /** SO_SNDBUF size to set on port 53 UDP socket */
174 /** SO_REUSEPORT requested on port 53 sockets */
176 /** IP_TRANSPARENT socket option requested on port 53 sockets */
178 /** IP_FREEBIND socket option request on port 53 sockets */
181 /** number of interfaces to open. If 0 default all interfaces. */
183 /** interface description strings (IP addresses) */
186 /** number of outgoing interfaces to open.
187 * If 0 default all interfaces. */
189 /** outgoing interface description strings (IP addresses) */
192 /** the root hints */
193 struct config_strlist* root_hints;
194 /** the stub definitions, linked list */
195 struct config_stub* stubs;
196 /** the forward zone definitions, linked list */
197 struct config_stub* forwards;
198 /** the auth zone definitions, linked list */
199 struct config_auth* auths;
200 /** the views definitions, linked list */
201 struct config_view* views;
202 /** list of donotquery addresses, linked list */
203 struct config_strlist* donotqueryaddrs;
205 /** list of servers we send edns-client-subnet option to and
206 * accept option from, linked list */
207 struct config_strlist* client_subnet;
208 /** list of zones we send edns-client-subnet option for */
209 struct config_strlist* client_subnet_zone;
210 /** opcode assigned by IANA for edns0-client-subnet option */
211 uint16_t client_subnet_opcode;
212 /** Do not check whitelist if incoming query contains an ECS record */
213 int client_subnet_always_forward;
214 /** Subnet length we are willing to give up privacy for */
215 uint8_t max_client_subnet_ipv4;
216 uint8_t max_client_subnet_ipv6;
218 /** list of access control entries, linked list */
219 struct config_str2list* acls;
220 /** use default localhost donotqueryaddr entries */
221 int donotquery_localhost;
223 /** list of tcp connection limitss, linked list */
224 struct config_str2list* tcp_connection_limits;
226 /** harden against very small edns buffer sizes */
227 int harden_short_bufsize;
228 /** harden against very large query sizes */
229 int harden_large_queries;
230 /** harden against spoofed glue (out of zone data) */
232 /** harden against receiving no DNSSEC data for trust anchor */
233 int harden_dnssec_stripped;
234 /** harden against queries that fall under known nxdomain names */
235 int harden_below_nxdomain;
236 /** harden the referral path, query for NS,A,AAAA and validate */
237 int harden_referral_path;
238 /** harden against algorithm downgrade */
239 int harden_algo_downgrade;
240 /** use 0x20 bits in query as random ID bits */
241 int use_caps_bits_for_id;
242 /** 0x20 whitelist, domains that do not use capsforid */
243 struct config_strlist* caps_whitelist;
244 /** strip away these private addrs from answers, no DNS Rebinding */
245 struct config_strlist* private_address;
246 /** allow domain (and subdomains) to use private address space */
247 struct config_strlist* private_domain;
248 /** what threshold for unwanted action. */
249 size_t unwanted_threshold;
250 /** the number of seconds maximal TTL used for RRsets and messages */
252 /** the number of seconds minimum TTL used for RRsets and messages */
254 /** the number of seconds maximal negative TTL for SOA in auth */
255 int max_negative_ttl;
256 /** if prefetching of messages should be performed. */
258 /** if prefetching of DNSKEYs should be performed. */
261 /** chrootdir, if not "" or chroot will be done */
263 /** username to change to, if not "". */
265 /** working directory */
267 /** filename to log to. */
269 /** pidfile to write pid to. */
272 /** should log messages be sent to syslogd */
274 /** log timestamp in ascii UTC */
276 /** log queries with one line per query */
278 /** log replies with one line per reply */
280 /** log every local-zone hit **/
281 int log_local_actions;
282 /** log servfails with a reason */
284 /** log identity to report */
287 /** do not report identity (id.server, hostname.bind) */
289 /** do not report version (version.server, version.bind) */
291 /** do not report trustanchor (trustanchor.unbound) */
292 int hide_trustanchor;
293 /** identity, hostname is returned if "". */
295 /** version, package version returned if "". */
298 /** the module configuration string */
301 /** files with trusted DS and DNSKEYs in zonefile format, list */
302 struct config_strlist* trust_anchor_file_list;
303 /** list of trustanchor keys, linked list */
304 struct config_strlist* trust_anchor_list;
305 /** files with 5011 autotrust tracked keys */
306 struct config_strlist* auto_trust_anchor_file_list;
307 /** files with trusted DNSKEYs in named.conf format, list */
308 struct config_strlist* trusted_keys_file_list;
309 /** DLV anchor file */
310 char* dlv_anchor_file;
311 /** DLV anchor inline */
312 struct config_strlist* dlv_anchor_list;
313 /** insecure domain list */
314 struct config_strlist* domain_insecure;
315 /** send key tag query */
316 int trust_anchor_signaling;
317 /** enable root key sentinel */
318 int root_key_sentinel;
320 /** if not 0, this value is the validation date for RRSIGs */
321 int32_t val_date_override;
322 /** the minimum for signature clock skew */
323 int32_t val_sig_skew_min;
324 /** the maximum for signature clock skew */
325 int32_t val_sig_skew_max;
326 /** this value sets the number of seconds before revalidating bogus */
328 /** should validator clean additional section for secure msgs */
329 int val_clean_additional;
330 /** log bogus messages by the validator */
332 /** squelch val_log_level to log - this is library goes to callback */
334 /** should validator allow bogus messages to go through */
335 int val_permissive_mode;
336 /** use cached NSEC records to synthesise (negative) answers */
338 /** ignore the CD flag in incoming queries and refuse them bogus data */
340 /** serve expired entries and prefetch them */
342 /** serve expired entries until TTL after expiration */
343 int serve_expired_ttl;
344 /** reset serve expired TTL after failed update attempt */
345 int serve_expired_ttl_reset;
346 /** nsec3 maximum iterations per key size, string */
347 char* val_nsec3_key_iterations;
348 /** autotrust add holddown time, in seconds */
349 unsigned int add_holddown;
350 /** autotrust del holddown time, in seconds */
351 unsigned int del_holddown;
352 /** autotrust keep_missing time, in seconds. 0 is forever. */
353 unsigned int keep_missing;
354 /** permit small holddown values, allowing 5011 rollover very fast */
355 int permit_small_holddown;
357 /** size of the key cache */
358 size_t key_cache_size;
359 /** slabs in the key cache. */
360 size_t key_cache_slabs;
361 /** size of the neg cache */
362 size_t neg_cache_size;
364 /** local zones config */
365 struct config_str2list* local_zones;
366 /** local zones nodefault list */
367 struct config_strlist* local_zones_nodefault;
368 /** do not add any default local zone */
369 int local_zones_disable_default;
370 /** local data RRs configured */
371 struct config_strlist* local_data;
372 /** local zone override types per netblock */
373 struct config_str3list* local_zone_overrides;
374 /** unblock lan zones (reverse lookups for AS112 zones) */
375 int unblock_lan_zones;
376 /** insecure lan zones (don't validate AS112 zones) */
377 int insecure_lan_zones;
378 /** list of zonename, tagbitlist */
379 struct config_strbytelist* local_zone_tags;
380 /** list of aclname, tagbitlist */
381 struct config_strbytelist* acl_tags;
382 /** list of aclname, tagname, localzonetype */
383 struct config_str3list* acl_tag_actions;
384 /** list of aclname, tagname, redirectdata */
385 struct config_str3list* acl_tag_datas;
386 /** list of aclname, view*/
387 struct config_str2list* acl_view;
388 /** list of IP-netblock, tagbitlist */
389 struct config_strbytelist* respip_tags;
390 /** list of response-driven access control entries, linked list */
391 struct config_str2list* respip_actions;
392 /** RRs configured for response-driven access controls */
393 struct config_str2list* respip_data;
394 /** tag list, array with tagname[i] is malloced string */
396 /** number of items in the taglist */
399 /** remote control section. enable toggle. */
400 int remote_control_enable;
401 /** the interfaces the remote control should listen on */
402 struct config_strlist_head control_ifs;
403 /** if the use-cert option is set */
404 int control_use_cert;
405 /** port number for the control port */
407 /** private key file for server */
408 char* server_key_file;
409 /** certificate file for server */
410 char* server_cert_file;
411 /** private key file for unbound-control */
412 char* control_key_file;
413 /** certificate file for unbound-control */
414 char* control_cert_file;
416 /** Python script file */
419 /** Use systemd socket activation. */
422 /** daemonize, i.e. fork into the background. */
425 /* minimal response when positive answer */
426 int minimal_responses;
428 /* RRSet roundrobin */
429 int rrset_roundrobin;
431 /* maximum UDP response size */
437 /* Synthetize all AAAA record despite the presence of an authoritative one */
439 /** ignore AAAAs for these domain names and use A record anyway */
440 struct config_strlist* dns64_ignore_aaaa;
442 /** true to enable dnstap support */
444 /** dnstap socket path */
445 char* dnstap_socket_path;
446 /** true to send "identity" via dnstap */
447 int dnstap_send_identity;
448 /** true to send "version" via dnstap */
449 int dnstap_send_version;
450 /** dnstap "identity", hostname is used if "". */
451 char* dnstap_identity;
452 /** dnstap "version", package version is used if "". */
453 char* dnstap_version;
455 /** true to log dnstap RESOLVER_QUERY message events */
456 int dnstap_log_resolver_query_messages;
457 /** true to log dnstap RESOLVER_RESPONSE message events */
458 int dnstap_log_resolver_response_messages;
459 /** true to log dnstap CLIENT_QUERY message events */
460 int dnstap_log_client_query_messages;
461 /** true to log dnstap CLIENT_RESPONSE message events */
462 int dnstap_log_client_response_messages;
463 /** true to log dnstap FORWARDER_QUERY message events */
464 int dnstap_log_forwarder_query_messages;
465 /** true to log dnstap FORWARDER_RESPONSE message events */
466 int dnstap_log_forwarder_response_messages;
468 /** true to disable DNSSEC lameness check in iterator */
469 int disable_dnssec_lame_check;
471 /** ratelimit for ip addresses. 0 is off, otherwise qps (unless overridden) */
473 /** number of slabs for ip_ratelimit cache */
474 size_t ip_ratelimit_slabs;
475 /** memory size in bytes for ip_ratelimit cache */
476 size_t ip_ratelimit_size;
477 /** ip_ratelimit factor, 0 blocks all, 10 allows 1/10 of traffic */
478 int ip_ratelimit_factor;
480 /** ratelimit for domains. 0 is off, otherwise qps (unless overridden) */
482 /** number of slabs for ratelimit cache */
483 size_t ratelimit_slabs;
484 /** memory size in bytes for ratelimit cache */
485 size_t ratelimit_size;
486 /** ratelimits for domain (exact match) */
487 struct config_str2list* ratelimit_for_domain;
488 /** ratelimits below domain */
489 struct config_str2list* ratelimit_below_domain;
490 /** ratelimit factor, 0 blocks all, 10 allows 1/10 of traffic */
491 int ratelimit_factor;
492 /** minimise outgoing QNAME and hide original QTYPE if possible */
493 int qname_minimisation;
494 /** minimise QNAME in strict mode, minimise according to RFC.
495 * Do not apply fallback */
496 int qname_minimisation_strict;
497 /** SHM data - true if shm is enabled */
499 /** SHM data - key for the shm */
503 /** true to enable dnscrypt */
505 /** port on which to provide dnscrypt service */
507 /** provider name 2.dnscrypt-cert.example.com */
508 char* dnscrypt_provider;
509 /** dnscrypt secret keys 1.key */
510 struct config_strlist* dnscrypt_secret_key;
511 /** dnscrypt provider certs 1.cert */
512 struct config_strlist* dnscrypt_provider_cert;
513 /** dnscrypt provider certs 1.cert which have been rotated and should not be
514 * advertised through DNS's providername TXT record but are required to be
515 * able to handle existing traffic using the old cert. */
516 struct config_strlist* dnscrypt_provider_cert_rotated;
517 /** memory size in bytes for dnscrypt shared secrets cache */
518 size_t dnscrypt_shared_secret_cache_size;
519 /** number of slabs for dnscrypt shared secrets cache */
520 size_t dnscrypt_shared_secret_cache_slabs;
521 /** memory size in bytes for dnscrypt nonces cache */
522 size_t dnscrypt_nonce_cache_size;
523 /** number of slabs for dnscrypt nonces cache */
524 size_t dnscrypt_nonce_cache_slabs;
527 /** false to bypass the IPsec module */
528 int ipsecmod_enabled;
529 /** whitelisted domains for ipsecmod */
530 struct config_strlist* ipsecmod_whitelist;
531 /** path to external hook */
533 /** true to proceed even with a bogus IPSECKEY */
534 int ipsecmod_ignore_bogus;
535 /** max TTL for the A/AAAA records that call the hook */
536 int ipsecmod_max_ttl;
537 /** false to proceed even when ipsecmod_hook fails */
543 /** backend DB name */
544 char* cachedb_backend;
545 /** secret seed for hash key calculation */
546 char* cachedb_secret;
548 /** redis server's IP address or host name */
549 char* redis_server_host;
550 /** redis server's TCP port */
551 int redis_server_port;
552 /** timeout (in ms) for communication with the redis server */
558 /** from cfg username, after daemonize setup performed */
559 extern uid_t cfg_uid;
560 /** from cfg username, after daemonize setup performed */
561 extern gid_t cfg_gid;
562 /** debug and enable small timeouts */
563 extern int autr_permit_small_holddown;
566 * Stub config options
570 struct config_stub* next;
571 /** domain name (in text) of the stub apex domain */
573 /** list of stub nameserver hosts (domain name) */
574 struct config_strlist* hosts;
575 /** list of stub nameserver addresses (IP address) */
576 struct config_strlist* addrs;
577 /** if stub-prime is set */
579 /** if forward-first is set (failover to without if fails) */
581 /** use SSL for queries to this stub */
588 * Auth config options
592 struct config_auth* next;
593 /** domain name (in text) of the auth apex domain */
595 /** list of masters */
596 struct config_strlist* masters;
598 struct config_strlist* urls;
599 /** list of allow-notify */
600 struct config_strlist* allow_notify;
601 /** zonefile (or NULL) */
603 /** provide downstream answers */
605 /** provide upstream answers */
607 /** fallback to recursion to authorities if zone expired and other
608 * reasons perhaps (like, query bogus) */
609 int fallback_enabled;
613 * View config options
617 struct config_view* next;
621 struct config_str2list* local_zones;
622 /** local data RRs */
623 struct config_strlist* local_data;
624 /** local zones nodefault list */
625 struct config_strlist* local_zones_nodefault;
626 /** Fallback to global local_zones when there is no match in the view
627 * view specific tree. 1 for yes, 0 for no */
629 /** predefined actions for particular IP address responses */
630 struct config_str2list* respip_actions;
631 /** data complementing the 'redirect' response IP actions */
632 struct config_str2list* respip_data;
636 * List of strings for config options
638 struct config_strlist {
639 /** next item in list */
640 struct config_strlist* next;
641 /** config option string */
646 * List of two strings for config options
648 struct config_str2list {
649 /** next item in list */
650 struct config_str2list* next;
658 * List of three strings for config options
660 struct config_str3list {
661 /** next item in list */
662 struct config_str3list* next;
673 * List of string, bytestring for config options
675 struct config_strbytelist {
676 /** next item in list */
677 struct config_strbytelist* next;
680 /** second bytestring */
686 * Create config file structure. Filled with default values.
687 * @return: the new structure or NULL on memory error.
689 struct config_file* config_create(void);
692 * Create config file structure for library use. Filled with default values.
693 * @return: the new structure or NULL on memory error.
695 struct config_file* config_create_forlib(void);
698 * Read the config file from the specified filename.
699 * @param config: where options are stored into, must be freshly created.
700 * @param filename: name of configfile. If NULL nothing is done.
701 * @param chroot: if not NULL, the chroot dir currently in use (for include).
702 * @return: false on error. In that case errno is set, ENOENT means
705 int config_read(struct config_file* config, const char* filename,
709 * Destroy the config file structure.
710 * @param config: to delete.
712 void config_delete(struct config_file* config);
715 * Apply config to global constants; this routine is called in single thread.
716 * @param config: to apply. Side effect: global constants change.
718 void config_apply(struct config_file* config);
721 * Find username, sets cfg_uid and cfg_gid.
722 * @param config: the config structure.
724 void config_lookup_uid(struct config_file* config);
727 * Set the given keyword to the given value.
728 * @param config: where to store config
729 * @param option: option name, including the ':' character.
730 * @param value: value, this string is copied if needed, or parsed.
731 * The caller owns the value string.
732 * @return 0 on error (malloc or syntax error).
734 int config_set_option(struct config_file* config, const char* option,
738 * Call print routine for the given option.
739 * @param cfg: config.
740 * @param opt: option name without trailing :.
741 * This is different from config_set_option.
742 * @param func: print func, called as (str, arg) for every data element.
743 * @param arg: user argument for print func.
744 * @return false if the option name is not supported (syntax error).
746 int config_get_option(struct config_file* cfg, const char* opt,
747 void (*func)(char*,void*), void* arg);
750 * Get an option and return strlist
751 * @param cfg: config file
752 * @param opt: option name.
753 * @param list: list is returned here. malloced, caller must free it.
754 * @return 0=OK, 1=syntax error, 2=malloc failed.
756 int config_get_option_list(struct config_file* cfg, const char* opt,
757 struct config_strlist** list);
760 * Get an option and collate results into string
761 * @param cfg: config file
762 * @param opt: option name.
763 * @param str: string. malloced, caller must free it.
764 * @return 0=OK, 1=syntax error, 2=malloc failed.
766 int config_get_option_collate(struct config_file* cfg, const char* opt,
770 * function to print to a file, use as func with config_get_option.
771 * @param line: text to print. \n appended.
772 * @param arg: pass a FILE*, like stdout.
774 void config_print_func(char* line, void* arg);
777 * function to collate the text strings into a strlist_head.
778 * @param line: text to append.
779 * @param arg: pass a strlist_head structure. zeroed on start.
781 void config_collate_func(char* line, void* arg);
784 * take a strlist_head list and return a malloc string. separated with newline.
785 * @param list: strlist first to collate. zeroes return "".
786 * @return NULL on malloc failure. Or if malloc failure happened in strlist.
788 char* config_collate_cat(struct config_strlist* list);
791 * Append text at end of list.
792 * @param list: list head. zeroed at start.
793 * @param item: new item. malloced by caller. if NULL the insertion fails.
794 * @return true on success.
796 int cfg_strlist_append(struct config_strlist_head* list, char* item);
799 * Find string in strlist.
800 * @param head: pointer to strlist head variable.
801 * @param item: the item to search for.
802 * @return: the element in the list when found, NULL otherwise.
804 struct config_strlist* cfg_strlist_find(struct config_strlist* head,
808 * Insert string into strlist.
809 * @param head: pointer to strlist head variable.
810 * @param item: new item. malloced by caller. If NULL the insertion fails.
811 * @return: true on success.
813 int cfg_strlist_insert(struct config_strlist** head, char* item);
815 /** insert with region for allocation. */
816 int cfg_region_strlist_insert(struct regional* region,
817 struct config_strlist** head, char* item);
820 * Insert string into str2list.
821 * @param head: pointer to str2list head variable.
822 * @param item: new item. malloced by caller. If NULL the insertion fails.
823 * @param i2: 2nd string, malloced by caller. If NULL the insertion fails.
824 * @return: true on success.
826 int cfg_str2list_insert(struct config_str2list** head, char* item, char* i2);
829 * Insert string into str3list.
830 * @param head: pointer to str3list head variable.
831 * @param item: new item. malloced by caller. If NULL the insertion fails.
832 * @param i2: 2nd string, malloced by caller. If NULL the insertion fails.
833 * @param i3: 3rd string, malloced by caller. If NULL the insertion fails.
834 * @return: true on success.
836 int cfg_str3list_insert(struct config_str3list** head, char* item, char* i2,
840 * Insert string into strbytelist.
841 * @param head: pointer to strbytelist head variable.
842 * @param item: new item. malloced by caller. If NULL the insertion fails.
843 * @param i2: 2nd string, malloced by caller. If NULL the insertion fails.
844 * @param i2len: length of the i2 bytestring.
845 * @return: true on success.
847 int cfg_strbytelist_insert(struct config_strbytelist** head, char* item,
848 uint8_t* i2, size_t i2len);
851 * Find stub in config list, also returns prevptr (for deletion).
852 * @param pp: call routine with pointer to a pointer to the start of the list,
853 * if the stub is found, on exit, the value contains a pointer to the
854 * next pointer that points to the found element (or to the list start
855 * pointer if it is the first element).
856 * @param nm: name of stub to find.
857 * @return: pointer to config_stub if found, or NULL if not found.
859 struct config_stub* cfg_stub_find(struct config_stub*** pp, const char* nm);
862 * Delete items in config string list.
865 void config_delstrlist(struct config_strlist* list);
868 * Delete items in config double string list.
871 void config_deldblstrlist(struct config_str2list* list);
874 * Delete items in config triple string list.
877 void config_deltrplstrlist(struct config_str3list* list);
879 /** delete stringbytelist */
880 void config_del_strbytelist(struct config_strbytelist* list);
884 * @param p: stub item
886 void config_delstub(struct config_stub* p);
889 * Delete items in config stub list.
892 void config_delstubs(struct config_stub* list);
895 * Delete an auth item
896 * @param p: auth item
898 void config_delauth(struct config_auth* p);
901 * Delete items in config auth list.
904 void config_delauths(struct config_auth* list);
908 * @param p: view item
910 void config_delview(struct config_view* p);
913 * Delete items in config view list.
916 void config_delviews(struct config_view* list);
918 /** check if config for remote control turns on IP-address interface
919 * with certificates or a named pipe without certificates. */
920 int options_remote_is_address(struct config_file* cfg);
923 * Convert 14digit to time value
924 * @param str: string of 14 digits
925 * @return time value or 0 for error.
927 time_t cfg_convert_timeval(const char* str);
930 * Count number of values in the string.
931 * format ::= (sp num)+ sp
933 * sp ::= (space|tab)*
936 * @return: 0 on parse error, or empty string, else
937 * number of integer values in the string.
939 int cfg_count_numbers(const char* str);
942 * Convert a 'nice' memory or file size into a bytecount
943 * From '100k' to 102400. and so on. Understands kKmMgG.
944 * k=1024, m=1024*1024, g=1024*1024*1024.
946 * @param res: result is stored here, size in bytes.
947 * @return: true if parsed correctly, or 0 on a parse error (and an error
950 int cfg_parse_memsize(const char* str, size_t* res);
953 * Add a tag name to the config. It is added at the end with a new ID value.
954 * @param cfg: the config structure.
955 * @param tag: string (which is copied) with the name.
956 * @return: false on alloc failure.
958 int config_add_tag(struct config_file* cfg, const char* tag);
961 * Find tag ID in the tag list.
962 * @param cfg: the config structure.
963 * @param tag: string with tag name to search for.
964 * @return: 0..(num_tags-1) with tag ID, or -1 if tagname is not found.
966 int find_tag_id(struct config_file* cfg, const char* tag);
969 * parse taglist from string into bytestring with bitlist.
970 * @param cfg: the config structure (with tagnames)
971 * @param str: the string to parse. Parse puts 0 bytes in string.
972 * @param listlen: returns length of in bytes.
973 * @return malloced bytes with a bitlist of the tags. or NULL on parse error
976 uint8_t* config_parse_taglist(struct config_file* cfg, char* str,
980 * convert tag bitlist to a malloced string with tag names. For debug output.
981 * @param cfg: the config structure (with tagnames)
982 * @param taglist: the tag bitlist.
983 * @param len: length of the tag bitlist.
984 * @return malloced string or NULL.
986 char* config_taglist2str(struct config_file* cfg, uint8_t* taglist,
990 * see if two taglists intersect (have tags in common).
991 * @param list1: first tag bitlist.
992 * @param list1len: length in bytes of first list.
993 * @param list2: second tag bitlist.
994 * @param list2len: length in bytes of second list.
995 * @return true if there are tags in common, 0 if not.
997 int taglist_intersect(uint8_t* list1, size_t list1len, uint8_t* list2,
1001 * Parse local-zone directive into two strings and register it in the config.
1002 * @param cfg: to put it in.
1003 * @param val: argument strings to local-zone, "example.com nodefault".
1004 * @return: false on failure
1006 int cfg_parse_local_zone(struct config_file* cfg, const char* val);
1009 * Mark "number" or "low-high" as available or not in ports array.
1010 * @param str: string in input
1011 * @param allow: give true if this range is permitted.
1012 * @param avail: the array from cfg.
1013 * @param num: size of the array (65536).
1014 * @return: true if parsed correctly, or 0 on a parse error (and an error
1017 int cfg_mark_ports(const char* str, int allow, int* avail, int num);
1020 * Get a condensed list of ports returned. allocated.
1021 * @param cfg: config file.
1022 * @param avail: the available ports array is returned here.
1023 * @return: number of ports in array or 0 on error.
1025 int cfg_condense_ports(struct config_file* cfg, int** avail);
1028 * Scan ports available
1029 * @param avail: the array from cfg.
1030 * @param num: size of the array (65536).
1031 * @return the number of ports available for use.
1033 int cfg_scan_ports(int* avail, int num);
1036 * Convert a filename to full pathname in original filesys
1037 * @param fname: the path name to convert.
1038 * Must not be null or empty.
1039 * @param cfg: config struct for chroot and chdir (if set).
1040 * @param use_chdir: if false, only chroot is applied.
1041 * @return pointer to malloced buffer which is: [chroot][chdir]fname
1042 * or NULL on malloc failure.
1044 char* fname_after_chroot(const char* fname, struct config_file* cfg,
1048 * Convert a ptr shorthand into a full reverse-notation PTR record.
1049 * @param str: input string, "IP name"
1050 * @return: malloced string "reversed-ip-name PTR name"
1052 char* cfg_ptr_reverse(char* str);
1055 * Append text to the error info for validation.
1056 * @param qstate: query state.
1057 * @param str: copied into query region and appended.
1058 * Failures to allocate are logged.
1060 void errinf(struct module_qstate* qstate, const char* str);
1063 * Append text to error info: from 1.2.3.4
1064 * @param qstate: query state.
1065 * @param origin: sock list with origin of trouble.
1066 * Every element added.
1067 * If NULL: nothing is added.
1068 * if 0len element: 'from cache' is added.
1070 void errinf_origin(struct module_qstate* qstate, struct sock_list *origin);
1073 * Append text to error info: for RRset name type class
1074 * @param qstate: query state.
1075 * @param rr: rrset_key.
1077 void errinf_rrset(struct module_qstate* qstate, struct ub_packed_rrset_key *rr);
1080 * Append text to error info: str dname
1081 * @param qstate: query state.
1082 * @param str: explanation string
1083 * @param dname: the dname.
1085 void errinf_dname(struct module_qstate* qstate, const char* str,
1089 * Create error info in string. For validation failures.
1090 * @param qstate: query state.
1091 * @return string or NULL on malloc failure (already logged).
1092 * This string is malloced and has to be freed by caller.
1094 char* errinf_to_str_bogus(struct module_qstate* qstate);
1097 * Create error info in string. For other servfails.
1098 * @param qstate: query state.
1099 * @return string or NULL on malloc failure (already logged).
1100 * This string is malloced and has to be freed by caller.
1102 char* errinf_to_str_servfail(struct module_qstate* qstate);
1105 * Used during options parsing
1107 struct config_parser_state {
1108 /** name of file being parser */
1110 /** line number in the file, starts at 1 */
1112 /** number of errors encountered */
1114 /** the result of parsing is stored here. */
1115 struct config_file* cfg;
1116 /** the current chroot dir (or NULL if none) */
1120 /** global config parser object used during config parsing */
1121 extern struct config_parser_state* cfg_parser;
1122 /** init lex state */
1123 void init_cfg_parse(void);
1125 extern FILE* ub_c_in;
1127 extern FILE* ub_c_out;
1128 /** the yacc lex generated parse function */
1129 int ub_c_parse(void);
1130 /** the lexer function */
1132 /** wrap function */
1133 int ub_c_wrap(void);
1134 /** parsing helpers: print error with file and line numbers */
1135 void ub_c_error(const char* msg);
1136 /** parsing helpers: print error with file and line numbers */
1137 void ub_c_error_msg(const char* fmt, ...) ATTR_FORMAT(printf, 1, 2);
1139 #ifdef UB_ON_WINDOWS
1141 * Obtain registry string (if it exists).
1142 * @param key: key string
1143 * @param name: name of value to fetch.
1144 * @return malloced string with the result or NULL if it did not
1145 * exist on an error (logged with log_err) was encountered.
1147 char* w_lookup_reg_str(const char* key, const char* name);
1149 /** Modify directory in options for module file name */
1150 void w_config_adjust_directory(struct config_file* cfg);
1151 #endif /* UB_ON_WINDOWS */
1153 /** debug option for unit tests. */
1154 extern int fake_dsa, fake_sha1;
1156 #endif /* UTIL_CONFIG_FILE_H */