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 struct config_stub; 45 struct config_strlist; 46 struct config_str2list; 47 struct module_qstate; 48 struct sock_list; 49 struct ub_packed_rrset_key; 50 51 /** 52 * The configuration options. 53 * Strings are malloced. 54 */ 55 struct config_file { 56 /** verbosity level as specified in the config file */ 57 int verbosity; 58 59 /** statistics interval (in seconds) */ 60 int stat_interval; 61 /** if false, statistics values are reset after printing them */ 62 int stat_cumulative; 63 /** if true, the statistics are kept in greater detail */ 64 int stat_extended; 65 66 /** number of threads to create */ 67 int num_threads; 68 69 /** port on which queries are answered. */ 70 int port; 71 /** do ip4 query support. */ 72 int do_ip4; 73 /** do ip6 query support. */ 74 int do_ip6; 75 /** do udp query support. */ 76 int do_udp; 77 /** do tcp query support. */ 78 int do_tcp; 79 /** tcp upstream queries (no UDP upstream queries) */ 80 int tcp_upstream; 81 82 /** private key file for dnstcp-ssl service (enabled if not NULL) */ 83 char* ssl_service_key; 84 /** public key file for dnstcp-ssl service */ 85 char* ssl_service_pem; 86 /** port on which to provide ssl service */ 87 int ssl_port; 88 /** if outgoing tcp connections use SSL */ 89 int ssl_upstream; 90 91 /** outgoing port range number of ports (per thread) */ 92 int outgoing_num_ports; 93 /** number of outgoing tcp buffers per (per thread) */ 94 size_t outgoing_num_tcp; 95 /** number of incoming tcp buffers per (per thread) */ 96 size_t incoming_num_tcp; 97 /** allowed udp port numbers, array with 0 if not allowed */ 98 int* outgoing_avail_ports; 99 100 /** EDNS buffer size to use */ 101 size_t edns_buffer_size; 102 /** number of bytes buffer size for DNS messages */ 103 size_t msg_buffer_size; 104 /** size of the message cache */ 105 size_t msg_cache_size; 106 /** slabs in the message cache. */ 107 size_t msg_cache_slabs; 108 /** number of queries every thread can service */ 109 size_t num_queries_per_thread; 110 /** number of msec to wait before items can be jostled out */ 111 size_t jostle_time; 112 /** size of the rrset cache */ 113 size_t rrset_cache_size; 114 /** slabs in the rrset cache */ 115 size_t rrset_cache_slabs; 116 /** host cache ttl in seconds */ 117 int host_ttl; 118 /** number of slabs in the infra host cache */ 119 size_t infra_cache_slabs; 120 /** max number of hosts in the infra cache */ 121 size_t infra_cache_numhosts; 122 /** min value for infra cache rtt */ 123 int infra_cache_min_rtt; 124 /** delay close of udp-timeouted ports, if 0 no delayclose. in msec */ 125 int delay_close; 126 127 /** the target fetch policy for the iterator */ 128 char* target_fetch_policy; 129 130 /** automatic interface for incoming messages. Uses ipv6 remapping, 131 * and recvmsg/sendmsg ancillary data to detect interfaces, boolean */ 132 int if_automatic; 133 /** SO_RCVBUF size to set on port 53 UDP socket */ 134 size_t so_rcvbuf; 135 /** SO_SNDBUF size to set on port 53 UDP socket */ 136 size_t so_sndbuf; 137 /** SO_REUSEPORT requested on port 53 sockets */ 138 int so_reuseport; 139 140 /** number of interfaces to open. If 0 default all interfaces. */ 141 int num_ifs; 142 /** interface description strings (IP addresses) */ 143 char **ifs; 144 145 /** number of outgoing interfaces to open. 146 * If 0 default all interfaces. */ 147 int num_out_ifs; 148 /** outgoing interface description strings (IP addresses) */ 149 char **out_ifs; 150 151 /** the root hints */ 152 struct config_strlist* root_hints; 153 /** the stub definitions, linked list */ 154 struct config_stub* stubs; 155 /** the forward zone definitions, linked list */ 156 struct config_stub* forwards; 157 /** list of donotquery addresses, linked list */ 158 struct config_strlist* donotqueryaddrs; 159 /** list of access control entries, linked list */ 160 struct config_str2list* acls; 161 /** use default localhost donotqueryaddr entries */ 162 int donotquery_localhost; 163 164 /** harden against very small edns buffer sizes */ 165 int harden_short_bufsize; 166 /** harden against very large query sizes */ 167 int harden_large_queries; 168 /** harden against spoofed glue (out of zone data) */ 169 int harden_glue; 170 /** harden against receiving no DNSSEC data for trust anchor */ 171 int harden_dnssec_stripped; 172 /** harden against queries that fall under known nxdomain names */ 173 int harden_below_nxdomain; 174 /** harden the referral path, query for NS,A,AAAA and validate */ 175 int harden_referral_path; 176 /** use 0x20 bits in query as random ID bits */ 177 int use_caps_bits_for_id; 178 /** strip away these private addrs from answers, no DNS Rebinding */ 179 struct config_strlist* private_address; 180 /** allow domain (and subdomains) to use private address space */ 181 struct config_strlist* private_domain; 182 /** what threshold for unwanted action. */ 183 size_t unwanted_threshold; 184 /** the number of seconds maximal TTL used for RRsets and messages */ 185 int max_ttl; 186 /** the number of seconds minimum TTL used for RRsets and messages */ 187 int min_ttl; 188 /** if prefetching of messages should be performed. */ 189 int prefetch; 190 /** if prefetching of DNSKEYs should be performed. */ 191 int prefetch_key; 192 193 /** chrootdir, if not "" or chroot will be done */ 194 char* chrootdir; 195 /** username to change to, if not "". */ 196 char* username; 197 /** working directory */ 198 char* directory; 199 /** filename to log to. */ 200 char* logfile; 201 /** pidfile to write pid to. */ 202 char* pidfile; 203 204 /** should log messages be sent to syslogd */ 205 int use_syslog; 206 /** log timestamp in ascii UTC */ 207 int log_time_ascii; 208 /** log queries with one line per query */ 209 int log_queries; 210 211 /** do not report identity (id.server, hostname.bind) */ 212 int hide_identity; 213 /** do not report version (version.server, version.bind) */ 214 int hide_version; 215 /** identity, hostname is returned if "". */ 216 char* identity; 217 /** version, package version returned if "". */ 218 char* version; 219 220 /** the module configuration string */ 221 char* module_conf; 222 223 /** files with trusted DS and DNSKEYs in zonefile format, list */ 224 struct config_strlist* trust_anchor_file_list; 225 /** list of trustanchor keys, linked list */ 226 struct config_strlist* trust_anchor_list; 227 /** files with 5011 autotrust tracked keys */ 228 struct config_strlist* auto_trust_anchor_file_list; 229 /** files with trusted DNSKEYs in named.conf format, list */ 230 struct config_strlist* trusted_keys_file_list; 231 /** DLV anchor file */ 232 char* dlv_anchor_file; 233 /** DLV anchor inline */ 234 struct config_strlist* dlv_anchor_list; 235 /** insecure domain list */ 236 struct config_strlist* domain_insecure; 237 238 /** if not 0, this value is the validation date for RRSIGs */ 239 int32_t val_date_override; 240 /** the minimum for signature clock skew */ 241 int32_t val_sig_skew_min; 242 /** the maximum for signature clock skew */ 243 int32_t val_sig_skew_max; 244 /** this value sets the number of seconds before revalidating bogus */ 245 int bogus_ttl; 246 /** should validator clean additional section for secure msgs */ 247 int val_clean_additional; 248 /** log bogus messages by the validator */ 249 int val_log_level; 250 /** squelch val_log_level to log - this is library goes to callback */ 251 int val_log_squelch; 252 /** should validator allow bogus messages to go through */ 253 int val_permissive_mode; 254 /** ignore the CD flag in incoming queries and refuse them bogus data */ 255 int ignore_cd; 256 /** nsec3 maximum iterations per key size, string */ 257 char* val_nsec3_key_iterations; 258 /** autotrust add holddown time, in seconds */ 259 unsigned int add_holddown; 260 /** autotrust del holddown time, in seconds */ 261 unsigned int del_holddown; 262 /** autotrust keep_missing time, in seconds. 0 is forever. */ 263 unsigned int keep_missing; 264 265 /** size of the key cache */ 266 size_t key_cache_size; 267 /** slabs in the key cache. */ 268 size_t key_cache_slabs; 269 /** size of the neg cache */ 270 size_t neg_cache_size; 271 272 /** local zones config */ 273 struct config_str2list* local_zones; 274 /** local zones nodefault list */ 275 struct config_strlist* local_zones_nodefault; 276 /** local data RRs configged */ 277 struct config_strlist* local_data; 278 /** unblock lan zones (reverse lookups for 10/8 and so on) */ 279 int unblock_lan_zones; 280 281 /** remote control section. enable toggle. */ 282 int remote_control_enable; 283 /** the interfaces the remote control should listen on */ 284 struct config_strlist* control_ifs; 285 /** port number for the control port */ 286 int control_port; 287 /** use certificates for remote control */ 288 int remote_control_use_cert; 289 /** private key file for server */ 290 char* server_key_file; 291 /** certificate file for server */ 292 char* server_cert_file; 293 /** private key file for unbound-control */ 294 char* control_key_file; 295 /** certificate file for unbound-control */ 296 char* control_cert_file; 297 298 /** Python script file */ 299 char* python_script; 300 301 /** daemonize, i.e. fork into the background. */ 302 int do_daemonize; 303 304 /* minimal response when positive answer */ 305 int minimal_responses; 306 307 /* RRSet roundrobin */ 308 int rrset_roundrobin; 309 310 /* maximum UDP response size */ 311 size_t max_udp_size; 312 313 /* DNS64 prefix */ 314 char* dns64_prefix; 315 316 /* Synthetize all AAAA record despite the presence of an authoritative one */ 317 int dns64_synthall; 318 319 /** true to enable dnstap support */ 320 int dnstap; 321 /** dnstap socket path */ 322 char* dnstap_socket_path; 323 /** true to send "identity" via dnstap */ 324 int dnstap_send_identity; 325 /** true to send "version" via dnstap */ 326 int dnstap_send_version; 327 /** dnstap "identity", hostname is used if "". */ 328 char* dnstap_identity; 329 /** dnstap "version", package version is used if "". */ 330 char* dnstap_version; 331 332 /** true to log dnstap RESOLVER_QUERY message events */ 333 int dnstap_log_resolver_query_messages; 334 /** true to log dnstap RESOLVER_RESPONSE message events */ 335 int dnstap_log_resolver_response_messages; 336 /** true to log dnstap CLIENT_QUERY message events */ 337 int dnstap_log_client_query_messages; 338 /** true to log dnstap CLIENT_RESPONSE message events */ 339 int dnstap_log_client_response_messages; 340 /** true to log dnstap FORWARDER_QUERY message events */ 341 int dnstap_log_forwarder_query_messages; 342 /** true to log dnstap FORWARDER_RESPONSE message events */ 343 int dnstap_log_forwarder_response_messages; 344 }; 345 346 /** from cfg username, after daemonise setup performed */ 347 extern uid_t cfg_uid; 348 /** from cfg username, after daemonise setup performed */ 349 extern gid_t cfg_gid; 350 351 /** 352 * Stub config options 353 */ 354 struct config_stub { 355 /** next in list */ 356 struct config_stub* next; 357 /** domain name (in text) of the stub apex domain */ 358 char* name; 359 /** list of stub nameserver hosts (domain name) */ 360 struct config_strlist* hosts; 361 /** list of stub nameserver addresses (IP address) */ 362 struct config_strlist* addrs; 363 /** if stub-prime is set */ 364 int isprime; 365 /** if forward-first is set (failover to without if fails) */ 366 int isfirst; 367 }; 368 369 /** 370 * List of strings for config options 371 */ 372 struct config_strlist { 373 /** next item in list */ 374 struct config_strlist* next; 375 /** config option string */ 376 char* str; 377 }; 378 379 /** 380 * List of two strings for config options 381 */ 382 struct config_str2list { 383 /** next item in list */ 384 struct config_str2list* next; 385 /** first string */ 386 char* str; 387 /** second string */ 388 char* str2; 389 }; 390 391 /** List head for strlist processing, used for append operation. */ 392 struct config_strlist_head { 393 /** first in list of text items */ 394 struct config_strlist* first; 395 /** last in list of text items */ 396 struct config_strlist* last; 397 }; 398 399 /** 400 * Create config file structure. Filled with default values. 401 * @return: the new structure or NULL on memory error. 402 */ 403 struct config_file* config_create(void); 404 405 /** 406 * Create config file structure for library use. Filled with default values. 407 * @return: the new structure or NULL on memory error. 408 */ 409 struct config_file* config_create_forlib(void); 410 411 /** 412 * Read the config file from the specified filename. 413 * @param config: where options are stored into, must be freshly created. 414 * @param filename: name of configfile. If NULL nothing is done. 415 * @param chroot: if not NULL, the chroot dir currently in use (for include). 416 * @return: false on error. In that case errno is set, ENOENT means 417 * file not found. 418 */ 419 int config_read(struct config_file* config, const char* filename, 420 const char* chroot); 421 422 /** 423 * Destroy the config file structure. 424 * @param config: to delete. 425 */ 426 void config_delete(struct config_file* config); 427 428 /** 429 * Apply config to global constants; this routine is called in single thread. 430 * @param config: to apply. Side effect: global constants change. 431 */ 432 void config_apply(struct config_file* config); 433 434 /** 435 * Find username, sets cfg_uid and cfg_gid. 436 * @param config: the config structure. 437 */ 438 void config_lookup_uid(struct config_file* config); 439 440 /** 441 * Set the given keyword to the given value. 442 * @param config: where to store config 443 * @param option: option name, including the ':' character. 444 * @param value: value, this string is copied if needed, or parsed. 445 * The caller owns the value string. 446 * @return 0 on error (malloc or syntax error). 447 */ 448 int config_set_option(struct config_file* config, const char* option, 449 const char* value); 450 451 /** 452 * Call print routine for the given option. 453 * @param cfg: config. 454 * @param opt: option name without trailing :. 455 * This is different from config_set_option. 456 * @param func: print func, called as (str, arg) for every data element. 457 * @param arg: user argument for print func. 458 * @return false if the option name is not supported (syntax error). 459 */ 460 int config_get_option(struct config_file* cfg, const char* opt, 461 void (*func)(char*,void*), void* arg); 462 463 /** 464 * Get an option and return strlist 465 * @param cfg: config file 466 * @param opt: option name. 467 * @param list: list is returned here. malloced, caller must free it. 468 * @return 0=OK, 1=syntax error, 2=malloc failed. 469 */ 470 int config_get_option_list(struct config_file* cfg, const char* opt, 471 struct config_strlist** list); 472 473 /** 474 * Get an option and collate results into string 475 * @param cfg: config file 476 * @param opt: option name. 477 * @param str: string. malloced, caller must free it. 478 * @return 0=OK, 1=syntax error, 2=malloc failed. 479 */ 480 int config_get_option_collate(struct config_file* cfg, const char* opt, 481 char** str); 482 483 /** 484 * function to print to a file, use as func with config_get_option. 485 * @param line: text to print. \n appended. 486 * @param arg: pass a FILE*, like stdout. 487 */ 488 void config_print_func(char* line, void* arg); 489 490 /** 491 * function to collate the text strings into a strlist_head. 492 * @param line: text to append. 493 * @param arg: pass a strlist_head structure. zeroed on start. 494 */ 495 void config_collate_func(char* line, void* arg); 496 497 /** 498 * take a strlist_head list and return a malloc string. separated with newline. 499 * @param list: strlist first to collate. zeroes return "". 500 * @return NULL on malloc failure. Or if malloc failure happened in strlist. 501 */ 502 char* config_collate_cat(struct config_strlist* list); 503 504 /** 505 * Append text at end of list. 506 * @param list: list head. zeroed at start. 507 * @param item: new item. malloced by caller. if NULL the insertion fails. 508 * @return true on success. 509 */ 510 int cfg_strlist_append(struct config_strlist_head* list, char* item); 511 512 /** 513 * Insert string into strlist. 514 * @param head: pointer to strlist head variable. 515 * @param item: new item. malloced by caller. If NULL the insertion fails. 516 * @return: true on success. 517 */ 518 int cfg_strlist_insert(struct config_strlist** head, char* item); 519 520 /** 521 * Insert string into str2list. 522 * @param head: pointer to str2list head variable. 523 * @param item: new item. malloced by caller. If NULL the insertion fails. 524 * @param i2: 2nd string, malloced by caller. If NULL the insertion fails. 525 * @return: true on success. 526 */ 527 int cfg_str2list_insert(struct config_str2list** head, char* item, char* i2); 528 529 /** 530 * Delete items in config string list. 531 * @param list: list. 532 */ 533 void config_delstrlist(struct config_strlist* list); 534 535 /** 536 * Delete items in config double string list. 537 * @param list: list. 538 */ 539 void config_deldblstrlist(struct config_str2list* list); 540 541 /** 542 * Delete items in config stub list. 543 * @param list: list. 544 */ 545 void config_delstubs(struct config_stub* list); 546 547 /** 548 * Convert 14digit to time value 549 * @param str: string of 14 digits 550 * @return time value or 0 for error. 551 */ 552 time_t cfg_convert_timeval(const char* str); 553 554 /** 555 * Count number of values in the string. 556 * format ::= (sp num)+ sp 557 * num ::= [-](0-9)+ 558 * sp ::= (space|tab)* 559 * 560 * @param str: string 561 * @return: 0 on parse error, or empty string, else 562 * number of integer values in the string. 563 */ 564 int cfg_count_numbers(const char* str); 565 566 /** 567 * Convert a 'nice' memory or file size into a bytecount 568 * From '100k' to 102400. and so on. Understands kKmMgG. 569 * k=1024, m=1024*1024, g=1024*1024*1024. 570 * @param str: string 571 * @param res: result is stored here, size in bytes. 572 * @return: true if parsed correctly, or 0 on a parse error (and an error 573 * is logged). 574 */ 575 int cfg_parse_memsize(const char* str, size_t* res); 576 577 /** 578 * Parse local-zone directive into two strings and register it in the config. 579 * @param cfg: to put it in. 580 * @param val: argument strings to local-zone, "example.com nodefault". 581 * @return: false on failure 582 */ 583 int cfg_parse_local_zone(struct config_file* cfg, const char* val); 584 585 /** 586 * Mark "number" or "low-high" as available or not in ports array. 587 * @param str: string in input 588 * @param allow: give true if this range is permitted. 589 * @param avail: the array from cfg. 590 * @param num: size of the array (65536). 591 * @return: true if parsed correctly, or 0 on a parse error (and an error 592 * is logged). 593 */ 594 int cfg_mark_ports(const char* str, int allow, int* avail, int num); 595 596 /** 597 * Get a condensed list of ports returned. allocated. 598 * @param cfg: config file. 599 * @param avail: the available ports array is returned here. 600 * @return: number of ports in array or 0 on error. 601 */ 602 int cfg_condense_ports(struct config_file* cfg, int** avail); 603 604 /** 605 * Scan ports available 606 * @param avail: the array from cfg. 607 * @param num: size of the array (65536). 608 * @return the number of ports available for use. 609 */ 610 int cfg_scan_ports(int* avail, int num); 611 612 /** 613 * Convert a filename to full pathname in original filesys 614 * @param fname: the path name to convert. 615 * Must not be null or empty. 616 * @param cfg: config struct for chroot and chdir (if set). 617 * @param use_chdir: if false, only chroot is applied. 618 * @return pointer to malloced buffer which is: [chroot][chdir]fname 619 * or NULL on malloc failure. 620 */ 621 char* fname_after_chroot(const char* fname, struct config_file* cfg, 622 int use_chdir); 623 624 /** 625 * Convert a ptr shorthand into a full reverse-notation PTR record. 626 * @param str: input string, "IP name" 627 * @return: malloced string "reversed-ip-name PTR name" 628 */ 629 char* cfg_ptr_reverse(char* str); 630 631 /** 632 * Append text to the error info for validation. 633 * @param qstate: query state. 634 * @param str: copied into query region and appended. 635 * Failures to allocate are logged. 636 */ 637 void errinf(struct module_qstate* qstate, const char* str); 638 639 /** 640 * Append text to error info: from 1.2.3.4 641 * @param qstate: query state. 642 * @param origin: sock list with origin of trouble. 643 * Every element added. 644 * If NULL: nothing is added. 645 * if 0len element: 'from cache' is added. 646 */ 647 void errinf_origin(struct module_qstate* qstate, struct sock_list *origin); 648 649 /** 650 * Append text to error info: for RRset name type class 651 * @param qstate: query state. 652 * @param rr: rrset_key. 653 */ 654 void errinf_rrset(struct module_qstate* qstate, struct ub_packed_rrset_key *rr); 655 656 /** 657 * Append text to error info: str dname 658 * @param qstate: query state. 659 * @param str: explanation string 660 * @param dname: the dname. 661 */ 662 void errinf_dname(struct module_qstate* qstate, const char* str, 663 uint8_t* dname); 664 665 /** 666 * Create error info in string 667 * @param qstate: query state. 668 * @return string or NULL on malloc failure (already logged). 669 * This string is malloced and has to be freed by caller. 670 */ 671 char* errinf_to_str(struct module_qstate* qstate); 672 673 /** 674 * Used during options parsing 675 */ 676 struct config_parser_state { 677 /** name of file being parser */ 678 char* filename; 679 /** line number in the file, starts at 1 */ 680 int line; 681 /** number of errors encountered */ 682 int errors; 683 /** the result of parsing is stored here. */ 684 struct config_file* cfg; 685 /** the current chroot dir (or NULL if none) */ 686 const char* chroot; 687 }; 688 689 /** global config parser object used during config parsing */ 690 extern struct config_parser_state* cfg_parser; 691 /** init lex state */ 692 void init_cfg_parse(void); 693 /** lex in file */ 694 extern FILE* ub_c_in; 695 /** lex out file */ 696 extern FILE* ub_c_out; 697 /** the yacc lex generated parse function */ 698 int ub_c_parse(void); 699 /** the lexer function */ 700 int ub_c_lex(void); 701 /** wrap function */ 702 int ub_c_wrap(void); 703 /** parsing helpers: print error with file and line numbers */ 704 void ub_c_error(const char* msg); 705 /** parsing helpers: print error with file and line numbers */ 706 void ub_c_error_msg(const char* fmt, ...) ATTR_FORMAT(printf, 1, 2); 707 708 #ifdef UB_ON_WINDOWS 709 /** 710 * Obtain registry string (if it exists). 711 * @param key: key string 712 * @param name: name of value to fetch. 713 * @return malloced string with the result or NULL if it did not 714 * exist on an error (logged with log_err) was encountered. 715 */ 716 char* w_lookup_reg_str(const char* key, const char* name); 717 #endif /* UB_ON_WINDOWS */ 718 719 #endif /* UTIL_CONFIG_FILE_H */ 720