2 * util/config_file.c - reads and stores the config file for unbound.
4 * Copyright (c) 2007, NLnet Labs. All rights reserved.
6 * This software is open source.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
12 * Redistributions of source code must retain the above copyright notice,
13 * this list of conditions and the following disclaimer.
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.
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.
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.
39 * This file contains functions for the config file.
49 #include "util/configyyrename.h"
50 #include "util/config_file.h"
51 #include "configparser.h"
52 #include "util/net_help.h"
53 #include "util/data/msgparse.h"
54 #include "util/module.h"
55 #include "util/regional.h"
56 #include "util/fptr_wlist.h"
57 #include "util/data/dname.h"
59 #include "ldns/wire2str.h"
60 #include "ldns/parseutil.h"
68 /** from cfg username, after daemonise setup performed */
69 uid_t cfg_uid = (uid_t)-1;
70 /** from cfg username, after daemonise setup performed */
71 gid_t cfg_gid = (gid_t)-1;
73 /** global config during parsing */
74 struct config_parser_state* cfg_parser = 0;
76 /** init ports possible for use */
77 static void init_outgoing_availports(int* array, int num);
82 struct config_file* cfg;
83 cfg = (struct config_file*)calloc(1, sizeof(struct config_file));
86 /* the defaults if no config is present */
88 cfg->stat_interval = 0;
89 cfg->stat_cumulative = 0;
90 cfg->stat_extended = 0;
92 cfg->port = UNBOUND_DNS_PORT;
97 cfg->tcp_upstream = 0;
98 cfg->ssl_service_key = NULL;
99 cfg->ssl_service_pem = NULL;
101 cfg->ssl_upstream = 0;
103 cfg->log_time_ascii = 0;
104 cfg->log_queries = 0;
106 # ifdef USE_MINI_EVENT
107 /* select max 1024 sockets */
108 cfg->outgoing_num_ports = 960;
109 cfg->num_queries_per_thread = 512;
111 /* libevent can use many sockets */
112 cfg->outgoing_num_ports = 4096;
113 cfg->num_queries_per_thread = 1024;
115 cfg->outgoing_num_tcp = 10;
116 cfg->incoming_num_tcp = 10;
118 cfg->outgoing_num_ports = 48; /* windows is limited in num fds */
119 cfg->num_queries_per_thread = 24;
120 cfg->outgoing_num_tcp = 2; /* leaves 64-52=12 for: 4if,1stop,thread4 */
121 cfg->incoming_num_tcp = 2;
123 cfg->edns_buffer_size = 4096; /* 4k from rfc recommendation */
124 cfg->msg_buffer_size = 65552; /* 64 k + a small margin */
125 cfg->msg_cache_size = 4 * 1024 * 1024;
126 cfg->msg_cache_slabs = 4;
127 cfg->jostle_time = 200;
128 cfg->rrset_cache_size = 4 * 1024 * 1024;
129 cfg->rrset_cache_slabs = 4;
133 cfg->max_ttl = 3600 * 24;
135 cfg->prefetch_key = 0;
136 cfg->infra_cache_slabs = 4;
137 cfg->infra_cache_numhosts = 10000;
138 cfg->infra_cache_min_rtt = 50;
139 cfg->delay_close = 0;
140 if(!(cfg->outgoing_avail_ports = (int*)calloc(65536, sizeof(int))))
142 init_outgoing_availports(cfg->outgoing_avail_ports, 65536);
143 if(!(cfg->username = strdup(UB_USERNAME))) goto error_exit;
145 if(!(cfg->chrootdir = strdup(CHROOT_DIR))) goto error_exit;
147 if(!(cfg->directory = strdup(RUN_DIR))) goto error_exit;
148 if(!(cfg->logfile = strdup(""))) goto error_exit;
149 if(!(cfg->pidfile = strdup(PIDFILE))) goto error_exit;
150 if(!(cfg->target_fetch_policy = strdup("3 2 1 0 0"))) goto error_exit;
151 cfg->donotqueryaddrs = NULL;
152 cfg->donotquery_localhost = 1;
153 cfg->root_hints = NULL;
154 cfg->do_daemonize = 1;
155 cfg->if_automatic = 0;
158 cfg->so_reuseport = 0;
161 cfg->num_out_ifs = 0;
164 cfg->forwards = NULL;
166 cfg->harden_short_bufsize = 0;
167 cfg->harden_large_queries = 0;
168 cfg->harden_glue = 1;
169 cfg->harden_dnssec_stripped = 1;
170 cfg->harden_below_nxdomain = 0;
171 cfg->harden_referral_path = 0;
172 cfg->use_caps_bits_for_id = 0;
173 cfg->private_address = NULL;
174 cfg->private_domain = NULL;
175 cfg->unwanted_threshold = 0;
176 cfg->hide_identity = 0;
177 cfg->hide_version = 0;
178 cfg->identity = NULL;
180 cfg->auto_trust_anchor_file_list = NULL;
181 cfg->trust_anchor_file_list = NULL;
182 cfg->trust_anchor_list = NULL;
183 cfg->trusted_keys_file_list = NULL;
184 cfg->dlv_anchor_file = NULL;
185 cfg->dlv_anchor_list = NULL;
186 cfg->domain_insecure = NULL;
187 cfg->val_date_override = 0;
188 cfg->val_sig_skew_min = 3600; /* at least daylight savings trouble */
189 cfg->val_sig_skew_max = 86400; /* at most timezone settings trouble */
190 cfg->val_clean_additional = 1;
191 cfg->val_log_level = 0;
192 cfg->val_log_squelch = 0;
193 cfg->val_permissive_mode = 0;
195 cfg->add_holddown = 30*24*3600;
196 cfg->del_holddown = 30*24*3600;
197 cfg->keep_missing = 366*24*3600; /* one year plus a little leeway */
198 cfg->key_cache_size = 4 * 1024 * 1024;
199 cfg->key_cache_slabs = 4;
200 cfg->neg_cache_size = 1 * 1024 * 1024;
201 cfg->local_zones = NULL;
202 cfg->local_zones_nodefault = NULL;
203 cfg->local_data = NULL;
204 cfg->unblock_lan_zones = 0;
205 cfg->python_script = NULL;
206 cfg->remote_control_enable = 0;
207 cfg->control_ifs = NULL;
208 cfg->control_port = UNBOUND_CONTROL_PORT;
209 cfg->remote_control_use_cert = 1;
210 cfg->minimal_responses = 0;
211 cfg->rrset_roundrobin = 0;
212 cfg->max_udp_size = 4096;
213 if(!(cfg->server_key_file = strdup(RUN_DIR"/unbound_server.key")))
215 if(!(cfg->server_cert_file = strdup(RUN_DIR"/unbound_server.pem")))
217 if(!(cfg->control_key_file = strdup(RUN_DIR"/unbound_control.key")))
219 if(!(cfg->control_cert_file = strdup(RUN_DIR"/unbound_control.pem")))
222 if(!(cfg->module_conf = strdup("validator iterator"))) goto error_exit;
223 if(!(cfg->val_nsec3_key_iterations =
224 strdup("1024 150 2048 500 4096 2500"))) goto error_exit;
225 #if defined(DNSTAP_SOCKET_PATH)
226 if(!(cfg->dnstap_socket_path = strdup(DNSTAP_SOCKET_PATH)))
235 struct config_file* config_create_forlib(void)
237 struct config_file* cfg = config_create();
238 if(!cfg) return NULL;
239 /* modifications for library use, less verbose, less memory */
240 free(cfg->chrootdir);
241 cfg->chrootdir = NULL;
243 cfg->outgoing_num_ports = 16; /* in library use, this is 'reasonable'
244 and probably within the ulimit(maxfds) of the user */
245 cfg->outgoing_num_tcp = 2;
246 cfg->msg_cache_size = 1024*1024;
247 cfg->msg_cache_slabs = 1;
248 cfg->rrset_cache_size = 1024*1024;
249 cfg->rrset_cache_slabs = 1;
250 cfg->infra_cache_slabs = 1;
252 cfg->key_cache_size = 1024*1024;
253 cfg->key_cache_slabs = 1;
254 cfg->neg_cache_size = 100 * 1024;
255 cfg->donotquery_localhost = 0; /* allow, so that you can ask a
256 forward nameserver running on localhost */
257 cfg->val_log_level = 2; /* to fill why_bogus with */
258 cfg->val_log_squelch = 1;
262 /** check that the value passed is >= 0 */
263 #define IS_NUMBER_OR_ZERO \
264 if(atoi(val) == 0 && strcmp(val, "0") != 0) return 0
265 /** check that the value passed is > 0 */
266 #define IS_NONZERO_NUMBER \
267 if(atoi(val) == 0) return 0
268 /** check that the value passed is not 0 and a power of 2 */
269 #define IS_POW2_NUMBER \
270 if(atoi(val) == 0 || !is_pow2((size_t)atoi(val))) return 0
271 /** check that the value passed is yes or no */
272 #define IS_YES_OR_NO \
273 if(strcmp(val, "yes") != 0 && strcmp(val, "no") != 0) return 0
274 /** put integer_or_zero into variable */
275 #define S_NUMBER_OR_ZERO(str, var) if(strcmp(opt, str) == 0) \
276 { IS_NUMBER_OR_ZERO; cfg->var = atoi(val); }
277 /** put integer_nonzero into variable */
278 #define S_NUMBER_NONZERO(str, var) if(strcmp(opt, str) == 0) \
279 { IS_NONZERO_NUMBER; cfg->var = atoi(val); }
280 /** put integer_or_zero into unsigned */
281 #define S_UNSIGNED_OR_ZERO(str, var) if(strcmp(opt, str) == 0) \
282 { IS_NUMBER_OR_ZERO; cfg->var = (unsigned)atoi(val); }
283 /** put integer_or_zero into size_t */
284 #define S_SIZET_OR_ZERO(str, var) if(strcmp(opt, str) == 0) \
285 { IS_NUMBER_OR_ZERO; cfg->var = (size_t)atoi(val); }
286 /** put integer_nonzero into size_t */
287 #define S_SIZET_NONZERO(str, var) if(strcmp(opt, str) == 0) \
288 { IS_NONZERO_NUMBER; cfg->var = (size_t)atoi(val); }
289 /** put yesno into variable */
290 #define S_YNO(str, var) if(strcmp(opt, str) == 0) \
291 { IS_YES_OR_NO; cfg->var = (strcmp(val, "yes") == 0); }
292 /** put memsize into variable */
293 #define S_MEMSIZE(str, var) if(strcmp(opt, str)==0) \
294 { return cfg_parse_memsize(val, &cfg->var); }
295 /** put pow2 number into variable */
296 #define S_POW2(str, var) if(strcmp(opt, str)==0) \
297 { IS_POW2_NUMBER; cfg->var = (size_t)atoi(val); }
298 /** put string into variable */
299 #define S_STR(str, var) if(strcmp(opt, str)==0) \
300 { free(cfg->var); return (cfg->var = strdup(val)) != NULL; }
301 /** put string into strlist */
302 #define S_STRLIST(str, var) if(strcmp(opt, str)==0) \
303 { return cfg_strlist_insert(&cfg->var, strdup(val)); }
305 int config_set_option(struct config_file* cfg, const char* opt,
308 S_NUMBER_OR_ZERO("verbosity:", verbosity)
309 else if(strcmp(opt, "statistics-interval:") == 0) {
310 if(strcmp(val, "0") == 0 || strcmp(val, "") == 0)
311 cfg->stat_interval = 0;
312 else if(atoi(val) == 0)
314 else cfg->stat_interval = atoi(val);
315 } else if(strcmp(opt, "num_threads:") == 0) {
316 /* not supported, library must have 1 thread in bgworker */
318 } else if(strcmp(opt, "outgoing-port-permit:") == 0) {
319 return cfg_mark_ports(val, 1,
320 cfg->outgoing_avail_ports, 65536);
321 } else if(strcmp(opt, "outgoing-port-avoid:") == 0) {
322 return cfg_mark_ports(val, 0,
323 cfg->outgoing_avail_ports, 65536);
324 } else if(strcmp(opt, "local-zone:") == 0) {
325 return cfg_parse_local_zone(cfg, val);
326 } else if(strcmp(opt, "val-override-date:") == 0) {
327 if(strcmp(val, "") == 0 || strcmp(val, "0") == 0) {
328 cfg->val_date_override = 0;
329 } else if(strlen(val) == 14) {
330 cfg->val_date_override = cfg_convert_timeval(val);
331 return cfg->val_date_override != 0;
333 if(atoi(val) == 0) return 0;
334 cfg->val_date_override = (uint32_t)atoi(val);
336 } else if(strcmp(opt, "local-data-ptr:") == 0) {
337 char* ptr = cfg_ptr_reverse((char*)opt);
338 return cfg_strlist_insert(&cfg->local_data, ptr);
339 } else if(strcmp(opt, "logfile:") == 0) {
342 return (cfg->logfile = strdup(val)) != NULL;
344 else if(strcmp(opt, "log-time-ascii:") == 0)
345 { IS_YES_OR_NO; cfg->log_time_ascii = (strcmp(val, "yes") == 0);
346 log_set_time_asc(cfg->log_time_ascii); }
347 else S_SIZET_NONZERO("max-udp-size:", max_udp_size)
348 else S_YNO("use-syslog:", use_syslog)
349 else S_YNO("extended-statistics:", stat_extended)
350 else S_YNO("statistics-cumulative:", stat_cumulative)
351 else S_YNO("do-ip4:", do_ip4)
352 else S_YNO("do-ip6:", do_ip6)
353 else S_YNO("do-udp:", do_udp)
354 else S_YNO("do-tcp:", do_tcp)
355 else S_YNO("tcp-upstream:", tcp_upstream)
356 else S_YNO("ssl-upstream:", ssl_upstream)
357 else S_STR("ssl-service-key:", ssl_service_key)
358 else S_STR("ssl-service-pem:", ssl_service_pem)
359 else S_NUMBER_NONZERO("ssl-port:", ssl_port)
360 else S_YNO("interface-automatic:", if_automatic)
361 else S_YNO("do-daemonize:", do_daemonize)
362 else S_NUMBER_NONZERO("port:", port)
363 else S_NUMBER_NONZERO("outgoing-range:", outgoing_num_ports)
364 else S_SIZET_OR_ZERO("outgoing-num-tcp:", outgoing_num_tcp)
365 else S_SIZET_OR_ZERO("incoming-num-tcp:", incoming_num_tcp)
366 else S_SIZET_NONZERO("edns-buffer-size:", edns_buffer_size)
367 else S_SIZET_NONZERO("msg-buffer-size:", msg_buffer_size)
368 else S_MEMSIZE("msg-cache-size:", msg_cache_size)
369 else S_POW2("msg-cache-slabs:", msg_cache_slabs)
370 else S_SIZET_NONZERO("num-queries-per-thread:",num_queries_per_thread)
371 else S_SIZET_OR_ZERO("jostle-timeout:", jostle_time)
372 else S_MEMSIZE("so-rcvbuf:", so_rcvbuf)
373 else S_MEMSIZE("so-sndbuf:", so_sndbuf)
374 else S_YNO("so-reuseport:", so_reuseport)
375 else S_MEMSIZE("rrset-cache-size:", rrset_cache_size)
376 else S_POW2("rrset-cache-slabs:", rrset_cache_slabs)
377 else S_YNO("prefetch:", prefetch)
378 else S_YNO("prefetch-key:", prefetch_key)
379 else if(strcmp(opt, "cache-max-ttl:") == 0)
380 { IS_NUMBER_OR_ZERO; cfg->max_ttl = atoi(val); MAX_TTL=(time_t)cfg->max_ttl;}
381 else if(strcmp(opt, "cache-min-ttl:") == 0)
382 { IS_NUMBER_OR_ZERO; cfg->min_ttl = atoi(val); MIN_TTL=(time_t)cfg->min_ttl;}
383 else if(strcmp(opt, "infra-cache-min-rtt:") == 0) {
384 IS_NUMBER_OR_ZERO; cfg->infra_cache_min_rtt = atoi(val);
385 RTT_MIN_TIMEOUT=cfg->infra_cache_min_rtt;
387 else S_NUMBER_OR_ZERO("infra-host-ttl:", host_ttl)
388 else S_POW2("infra-cache-slabs:", infra_cache_slabs)
389 else S_SIZET_NONZERO("infra-cache-numhosts:", infra_cache_numhosts)
390 else S_NUMBER_OR_ZERO("delay-close:", delay_close)
391 else S_STR("chroot:", chrootdir)
392 else S_STR("username:", username)
393 else S_STR("directory:", directory)
394 else S_STR("pidfile:", pidfile)
395 else S_YNO("hide-identity:", hide_identity)
396 else S_YNO("hide-version:", hide_version)
397 else S_STR("identity:", identity)
398 else S_STR("version:", version)
399 else S_STRLIST("root-hints:", root_hints)
400 else S_STR("target-fetch-policy:", target_fetch_policy)
401 else S_YNO("harden-glue:", harden_glue)
402 else S_YNO("harden-short-bufsize:", harden_short_bufsize)
403 else S_YNO("harden-large-queries:", harden_large_queries)
404 else S_YNO("harden-dnssec-stripped:", harden_dnssec_stripped)
405 else S_YNO("harden-below-nxdomain:", harden_below_nxdomain)
406 else S_YNO("harden-referral-path:", harden_referral_path)
407 else S_YNO("use-caps-for-id", use_caps_bits_for_id)
408 else S_SIZET_OR_ZERO("unwanted-reply-threshold:", unwanted_threshold)
409 else S_STRLIST("private-address:", private_address)
410 else S_STRLIST("private-domain:", private_domain)
411 else S_YNO("do-not-query-localhost:", donotquery_localhost)
412 else S_STRLIST("do-not-query-address:", donotqueryaddrs)
413 else S_STRLIST("auto-trust-anchor-file:", auto_trust_anchor_file_list)
414 else S_STRLIST("trust-anchor-file:", trust_anchor_file_list)
415 else S_STRLIST("trust-anchor:", trust_anchor_list)
416 else S_STRLIST("trusted-keys-file:", trusted_keys_file_list)
417 else S_STR("dlv-anchor-file:", dlv_anchor_file)
418 else S_STRLIST("dlv-anchor:", dlv_anchor_list)
419 else S_STRLIST("domain-insecure:", domain_insecure)
420 else S_NUMBER_OR_ZERO("val-bogus-ttl:", bogus_ttl)
421 else S_YNO("val-clean-additional:", val_clean_additional)
422 else S_NUMBER_OR_ZERO("val-log-level:", val_log_level)
423 else S_YNO("val-log-squelch:", val_log_squelch)
424 else S_YNO("log-queries:", log_queries)
425 else S_YNO("val-permissive-mode:", val_permissive_mode)
426 else S_YNO("ignore-cd-flag:", ignore_cd)
427 else S_STR("val-nsec3-keysize-iterations:", val_nsec3_key_iterations)
428 else S_UNSIGNED_OR_ZERO("add-holddown:", add_holddown)
429 else S_UNSIGNED_OR_ZERO("del-holddown:", del_holddown)
430 else S_UNSIGNED_OR_ZERO("keep-missing:", keep_missing)
431 else S_MEMSIZE("key-cache-size:", key_cache_size)
432 else S_POW2("key-cache-slabs:", key_cache_slabs)
433 else S_MEMSIZE("neg-cache-size:", neg_cache_size)
434 else S_YNO("minimal-responses:", minimal_responses)
435 else S_YNO("rrset-roundrobin:", rrset_roundrobin)
436 else S_STRLIST("local-data:", local_data)
437 else S_YNO("unblock-lan-zones:", unblock_lan_zones)
438 else S_YNO("control-enable:", remote_control_enable)
439 else S_STRLIST("control-interface:", control_ifs)
440 else S_NUMBER_NONZERO("control-port:", control_port)
441 else S_STR("server-key-file:", server_key_file)
442 else S_STR("server-cert-file:", server_cert_file)
443 else S_STR("control-key-file:", control_key_file)
444 else S_STR("control-cert-file:", control_cert_file)
445 else S_STR("module-config:", module_conf)
446 else S_STR("python-script:", python_script)
447 /* val_sig_skew_min and max are copied into val_env during init,
448 * so this does not update val_env with set_option */
449 else if(strcmp(opt, "val-sig-skew-min:") == 0)
450 { IS_NUMBER_OR_ZERO; cfg->val_sig_skew_min = (int32_t)atoi(val); }
451 else if(strcmp(opt, "val-sig-skew-max:") == 0)
452 { IS_NUMBER_OR_ZERO; cfg->val_sig_skew_max = (int32_t)atoi(val); }
453 else if (strcmp(opt, "outgoing-interface:") == 0) {
454 char* d = strdup(val);
455 char** oi = (char**)malloc((cfg->num_out_ifs+1)*sizeof(char*));
456 if(!d || !oi) { free(d); free(oi); return -1; }
457 if(cfg->out_ifs && cfg->num_out_ifs) {
458 memmove(oi, cfg->out_ifs, cfg->num_out_ifs*sizeof(char*));
461 oi[cfg->num_out_ifs++] = d;
464 /* unknown or unsupported (from the set_option interface):
465 * interface, outgoing-interface, access-control,
466 * stub-zone, name, stub-addr, stub-host, stub-prime
467 * forward-first, stub-first,
468 * forward-zone, name, forward-addr, forward-host */
474 void config_print_func(char* line, void* arg)
476 FILE* f = (FILE*)arg;
477 (void)fprintf(f, "%s\n", line);
480 /** collate func arg */
481 struct config_collate_arg {
482 /** list of result items */
483 struct config_strlist_head list;
484 /** if a malloc error occurred, 0 is OK */
488 void config_collate_func(char* line, void* arg)
490 struct config_collate_arg* m = (struct config_collate_arg*)arg;
493 if(!cfg_strlist_append(&m->list, strdup(line)))
497 int config_get_option_list(struct config_file* cfg, const char* opt,
498 struct config_strlist** list)
500 struct config_collate_arg m;
501 memset(&m, 0, sizeof(m));
503 if(!config_get_option(cfg, opt, config_collate_func, &m))
506 config_delstrlist(m.list.first);
509 *list = m.list.first;
514 config_get_option_collate(struct config_file* cfg, const char* opt, char** str)
516 struct config_strlist* list = NULL;
519 if((r = config_get_option_list(cfg, opt, &list)) != 0)
521 *str = config_collate_cat(list);
522 config_delstrlist(list);
528 config_collate_cat(struct config_strlist* list)
530 size_t total = 0, left;
531 struct config_strlist* s;
533 if(!list) /* no elements */
535 if(list->next == NULL) /* one element , no newline at end. */
536 return strdup(list->str);
537 /* count total length */
538 for(s=list; s; s=s->next)
539 total += strlen(s->str) + 1; /* len + newline */
540 left = total+1; /* one extra for nul at end */
545 for(s=list; s; s=s->next) {
546 size_t this = strlen(s->str);
547 if(this+2 > left) { /* sanity check */
551 snprintf(w, left, "%s\n", s->str);
559 /** compare and print decimal option */
560 #define O_DEC(opt, str, var) if(strcmp(opt, str)==0) \
561 {snprintf(buf, len, "%d", (int)cfg->var); \
563 /** compare and print unsigned option */
564 #define O_UNS(opt, str, var) if(strcmp(opt, str)==0) \
565 {snprintf(buf, len, "%u", (unsigned)cfg->var); \
567 /** compare and print yesno option */
568 #define O_YNO(opt, str, var) if(strcmp(opt, str)==0) \
569 {func(cfg->var?"yes":"no", arg);}
570 /** compare and print string option */
571 #define O_STR(opt, str, var) if(strcmp(opt, str)==0) \
572 {func(cfg->var?cfg->var:"", arg);}
573 /** compare and print array option */
574 #define O_IFC(opt, str, num, arr) if(strcmp(opt, str)==0) \
575 {int i; for(i=0; i<cfg->num; i++) func(cfg->arr[i], arg);}
576 /** compare and print memorysize option */
577 #define O_MEM(opt, str, var) if(strcmp(opt, str)==0) { \
578 if(cfg->var > 1024*1024*1024) { \
579 size_t f=cfg->var/(size_t)1000000, b=cfg->var%(size_t)1000000; \
580 snprintf(buf, len, "%u%6.6u\n", (unsigned)f, (unsigned)b); \
581 } else snprintf(buf, len, "%u\n", (unsigned)cfg->var); \
583 /** compare and print list option */
584 #define O_LST(opt, name, lst) if(strcmp(opt, name)==0) { \
585 struct config_strlist* p = cfg->lst; \
586 for(p = cfg->lst; p; p = p->next) \
589 /** compare and print list option */
590 #define O_LS2(opt, name, lst) if(strcmp(opt, name)==0) { \
591 struct config_str2list* p = cfg->lst; \
592 for(p = cfg->lst; p; p = p->next) \
593 snprintf(buf, len, "%s %s\n", p->str, p->str2); \
598 config_get_option(struct config_file* cfg, const char* opt,
599 void (*func)(char*,void*), void* arg)
602 size_t len = sizeof(buf);
603 fptr_ok(fptr_whitelist_print_func(func));
604 O_DEC(opt, "verbosity", verbosity)
605 else O_DEC(opt, "statistics-interval", stat_interval)
606 else O_YNO(opt, "statistics-cumulative", stat_cumulative)
607 else O_YNO(opt, "extended-statistics", stat_extended)
608 else O_YNO(opt, "use-syslog", use_syslog)
609 else O_YNO(opt, "log-time-ascii", log_time_ascii)
610 else O_DEC(opt, "num-threads", num_threads)
611 else O_IFC(opt, "interface", num_ifs, ifs)
612 else O_IFC(opt, "outgoing-interface", num_out_ifs, out_ifs)
613 else O_YNO(opt, "interface-automatic", if_automatic)
614 else O_DEC(opt, "port", port)
615 else O_DEC(opt, "outgoing-range", outgoing_num_ports)
616 else O_DEC(opt, "outgoing-num-tcp", outgoing_num_tcp)
617 else O_DEC(opt, "incoming-num-tcp", incoming_num_tcp)
618 else O_DEC(opt, "edns-buffer-size", edns_buffer_size)
619 else O_DEC(opt, "msg-buffer-size", msg_buffer_size)
620 else O_MEM(opt, "msg-cache-size", msg_cache_size)
621 else O_DEC(opt, "msg-cache-slabs", msg_cache_slabs)
622 else O_DEC(opt, "num-queries-per-thread", num_queries_per_thread)
623 else O_UNS(opt, "jostle-timeout", jostle_time)
624 else O_MEM(opt, "so-rcvbuf", so_rcvbuf)
625 else O_MEM(opt, "so-sndbuf", so_sndbuf)
626 else O_YNO(opt, "so-reuseport", so_reuseport)
627 else O_MEM(opt, "rrset-cache-size", rrset_cache_size)
628 else O_DEC(opt, "rrset-cache-slabs", rrset_cache_slabs)
629 else O_YNO(opt, "prefetch-key", prefetch_key)
630 else O_YNO(opt, "prefetch", prefetch)
631 else O_DEC(opt, "cache-max-ttl", max_ttl)
632 else O_DEC(opt, "cache-min-ttl", min_ttl)
633 else O_DEC(opt, "infra-host-ttl", host_ttl)
634 else O_DEC(opt, "infra-cache-slabs", infra_cache_slabs)
635 else O_DEC(opt, "infra-cache-min-rtt", infra_cache_min_rtt)
636 else O_MEM(opt, "infra-cache-numhosts", infra_cache_numhosts)
637 else O_UNS(opt, "delay-close", delay_close)
638 else O_YNO(opt, "do-ip4", do_ip4)
639 else O_YNO(opt, "do-ip6", do_ip6)
640 else O_YNO(opt, "do-udp", do_udp)
641 else O_YNO(opt, "do-tcp", do_tcp)
642 else O_YNO(opt, "tcp-upstream", tcp_upstream)
643 else O_YNO(opt, "ssl-upstream", ssl_upstream)
644 else O_STR(opt, "ssl-service-key", ssl_service_key)
645 else O_STR(opt, "ssl-service-pem", ssl_service_pem)
646 else O_DEC(opt, "ssl-port", ssl_port)
647 else O_YNO(opt, "do-daemonize", do_daemonize)
648 else O_STR(opt, "chroot", chrootdir)
649 else O_STR(opt, "username", username)
650 else O_STR(opt, "directory", directory)
651 else O_STR(opt, "logfile", logfile)
652 else O_YNO(opt, "log-queries", log_queries)
653 else O_STR(opt, "pidfile", pidfile)
654 else O_YNO(opt, "hide-identity", hide_identity)
655 else O_YNO(opt, "hide-version", hide_version)
656 else O_STR(opt, "identity", identity)
657 else O_STR(opt, "version", version)
658 else O_STR(opt, "target-fetch-policy", target_fetch_policy)
659 else O_YNO(opt, "harden-short-bufsize", harden_short_bufsize)
660 else O_YNO(opt, "harden-large-queries", harden_large_queries)
661 else O_YNO(opt, "harden-glue", harden_glue)
662 else O_YNO(opt, "harden-dnssec-stripped", harden_dnssec_stripped)
663 else O_YNO(opt, "harden-below-nxdomain", harden_below_nxdomain)
664 else O_YNO(opt, "harden-referral-path", harden_referral_path)
665 else O_YNO(opt, "use-caps-for-id", use_caps_bits_for_id)
666 else O_DEC(opt, "unwanted-reply-threshold", unwanted_threshold)
667 else O_YNO(opt, "do-not-query-localhost", donotquery_localhost)
668 else O_STR(opt, "module-config", module_conf)
669 else O_STR(opt, "dlv-anchor-file", dlv_anchor_file)
670 else O_DEC(opt, "val-bogus-ttl", bogus_ttl)
671 else O_YNO(opt, "val-clean-additional", val_clean_additional)
672 else O_DEC(opt, "val-log-level", val_log_level)
673 else O_YNO(opt, "val-permissive-mode", val_permissive_mode)
674 else O_YNO(opt, "ignore-cd-flag", ignore_cd)
675 else O_STR(opt, "val-nsec3-keysize-iterations",val_nsec3_key_iterations)
676 else O_UNS(opt, "add-holddown", add_holddown)
677 else O_UNS(opt, "del-holddown", del_holddown)
678 else O_UNS(opt, "keep-missing", keep_missing)
679 else O_MEM(opt, "key-cache-size", key_cache_size)
680 else O_DEC(opt, "key-cache-slabs", key_cache_slabs)
681 else O_MEM(opt, "neg-cache-size", neg_cache_size)
682 else O_YNO(opt, "control-enable", remote_control_enable)
683 else O_DEC(opt, "control-port", control_port)
684 else O_STR(opt, "server-key-file", server_key_file)
685 else O_STR(opt, "server-cert-file", server_cert_file)
686 else O_STR(opt, "control-key-file", control_key_file)
687 else O_STR(opt, "control-cert-file", control_cert_file)
688 else O_LST(opt, "root-hints", root_hints)
689 else O_LS2(opt, "access-control", acls)
690 else O_LST(opt, "do-not-query-address", donotqueryaddrs)
691 else O_LST(opt, "private-address", private_address)
692 else O_LST(opt, "private-domain", private_domain)
693 else O_LST(opt, "auto-trust-anchor-file", auto_trust_anchor_file_list)
694 else O_LST(opt, "trust-anchor-file", trust_anchor_file_list)
695 else O_LST(opt, "trust-anchor", trust_anchor_list)
696 else O_LST(opt, "trusted-keys-file", trusted_keys_file_list)
697 else O_LST(opt, "dlv-anchor", dlv_anchor_list)
698 else O_LST(opt, "control-interface", control_ifs)
699 else O_LST(opt, "domain-insecure", domain_insecure)
700 else O_UNS(opt, "val-override-date", val_date_override)
701 else O_YNO(opt, "minimal-responses", minimal_responses)
702 else O_YNO(opt, "rrset-roundrobin", rrset_roundrobin)
703 else O_YNO(opt, "unblock-lan-zones", unblock_lan_zones)
704 else O_DEC(opt, "max-udp-size", max_udp_size)
705 else O_STR(opt, "python-script", python_script)
706 else O_DEC(opt, "val-sig-skew-min", val_sig_skew_min)
707 else O_DEC(opt, "val-sig-skew-max", val_sig_skew_max)
709 * outgoing-permit, outgoing-avoid - have list of ports
710 * local-zone - zones and nodefault variables
711 * local-data - see below
712 * local-data-ptr - converted to local-data entries
713 * stub-zone, name, stub-addr, stub-host, stub-prime
714 * forward-zone, name, forward-addr, forward-host
720 /** initialize the global cfg_parser object */
722 create_cfg_parser(struct config_file* cfg, char* filename, const char* chroot)
724 static struct config_parser_state st;
726 cfg_parser->filename = filename;
727 cfg_parser->line = 1;
728 cfg_parser->errors = 0;
729 cfg_parser->cfg = cfg;
730 cfg_parser->chroot = chroot;
735 config_read(struct config_file* cfg, const char* filename, const char* chroot)
738 char *fname = (char*)filename;
747 /* check for wildcards */
749 if(!(!strchr(fname, '*') && !strchr(fname, '?') && !strchr(fname, '[') &&
750 !strchr(fname, '{') && !strchr(fname, '~'))) {
751 verbose(VERB_QUERY, "wildcard found, processing %s", fname);
766 memset(&g, 0, sizeof(g));
767 r = glob(fname, flags, NULL, &g);
771 if(r == GLOB_NOMATCH) {
772 verbose(VERB_QUERY, "include: "
773 "no matches for %s", fname);
775 } else if(r == GLOB_NOSPACE) {
776 log_err("include: %s: "
777 "fnametern out of memory", fname);
778 } else if(r == GLOB_ABORTED) {
779 log_err("wildcard include: %s: expansion "
780 "aborted (%s)", fname, strerror(errno));
782 log_err("wildcard include: %s: expansion "
783 "failed (%s)", fname, strerror(errno));
785 /* ignore globs that yield no files */
788 /* process files found, if any */
789 for(i=0; i<(size_t)g.gl_pathc; i++) {
790 if(!config_read(cfg, g.gl_pathv[i], chroot)) {
791 log_err("error reading wildcard "
792 "include: %s", g.gl_pathv[i]);
800 #endif /* HAVE_GLOB */
802 in = fopen(fname, "r");
804 log_err("Could not open %s: %s", fname, strerror(errno));
807 create_cfg_parser(cfg, fname, chroot);
812 if(cfg_parser->errors != 0) {
813 fprintf(stderr, "read %s failed: %d errors in configuration file\n",
814 fname, cfg_parser->errors);
823 config_delstrlist(struct config_strlist* p)
825 struct config_strlist *np;
835 config_deldblstrlist(struct config_str2list* p)
837 struct config_str2list *np;
848 config_delstubs(struct config_stub* p)
850 struct config_stub* np;
854 config_delstrlist(p->hosts);
855 config_delstrlist(p->addrs);
862 config_delete(struct config_file* cfg)
866 free(cfg->chrootdir);
867 free(cfg->directory);
870 free(cfg->target_fetch_policy);
871 free(cfg->ssl_service_key);
872 free(cfg->ssl_service_pem);
875 for(i=0; i<cfg->num_ifs; i++)
881 for(i=0; i<cfg->num_out_ifs; i++)
882 free(cfg->out_ifs[i]);
885 config_delstubs(cfg->stubs);
886 config_delstubs(cfg->forwards);
887 config_delstrlist(cfg->donotqueryaddrs);
888 config_delstrlist(cfg->root_hints);
891 free(cfg->module_conf);
892 free(cfg->outgoing_avail_ports);
893 config_delstrlist(cfg->private_address);
894 config_delstrlist(cfg->private_domain);
895 config_delstrlist(cfg->auto_trust_anchor_file_list);
896 config_delstrlist(cfg->trust_anchor_file_list);
897 config_delstrlist(cfg->trusted_keys_file_list);
898 config_delstrlist(cfg->trust_anchor_list);
899 config_delstrlist(cfg->domain_insecure);
900 free(cfg->dlv_anchor_file);
901 config_delstrlist(cfg->dlv_anchor_list);
902 config_deldblstrlist(cfg->acls);
903 free(cfg->val_nsec3_key_iterations);
904 config_deldblstrlist(cfg->local_zones);
905 config_delstrlist(cfg->local_zones_nodefault);
906 config_delstrlist(cfg->local_data);
907 config_delstrlist(cfg->control_ifs);
908 free(cfg->server_key_file);
909 free(cfg->server_cert_file);
910 free(cfg->control_key_file);
911 free(cfg->control_cert_file);
912 free(cfg->dnstap_socket_path);
913 free(cfg->dnstap_identity);
914 free(cfg->dnstap_version);
919 init_outgoing_availports(int* a, int num)
921 /* generated with make iana_update */
922 const int iana_assigned[] = {
923 #include "util/iana_ports.inc"
924 -1 }; /* end marker to put behind trailing comma */
927 /* do not use <1024, that could be trouble with the system, privs */
928 for(i=1024; i<num; i++) {
931 /* create empty spot at 49152 to keep ephemeral ports available
932 * to other programs */
933 for(i=49152; i<49152+256; i++)
935 /* pick out all the IANA assigned ports */
936 for(i=0; iana_assigned[i]!=-1; i++) {
937 if(iana_assigned[i] < num)
938 a[iana_assigned[i]] = 0;
943 cfg_mark_ports(const char* str, int allow, int* avail, int num)
945 char* mid = strchr(str, '-');
947 int port = atoi(str);
948 if(port == 0 && strcmp(str, "0") != 0) {
949 log_err("cannot parse port number '%s'", str);
953 avail[port] = (allow?port:0);
955 int i, low, high = atoi(mid+1);
957 if(high == 0 && strcmp(mid+1, "0") != 0) {
958 log_err("cannot parse port number '%s'", mid+1);
961 if( (int)(mid-str)+1 >= (int)sizeof(buf) ) {
962 log_err("cannot parse port number '%s'", str);
966 memcpy(buf, str, (size_t)(mid-str));
969 if(low == 0 && strcmp(buf, "0") != 0) {
970 log_err("cannot parse port number '%s'", buf);
973 for(i=low; i<=high; i++) {
975 avail[i] = (allow?i:0);
983 cfg_scan_ports(int* avail, int num)
987 for(i=0; i<num; i++) {
994 int cfg_condense_ports(struct config_file* cfg, int** avail)
996 int num = cfg_scan_ports(cfg->outgoing_avail_ports, 65536);
1001 *avail = (int*)malloc(sizeof(int)*num);
1004 for(i=0; i<65536; i++) {
1005 if(cfg->outgoing_avail_ports[i])
1006 (*avail)[at++] = cfg->outgoing_avail_ports[i];
1008 log_assert(at == num);
1012 /** print error with file and line number */
1013 static void ub_c_error_va_list(const char *fmt, va_list args)
1015 cfg_parser->errors++;
1016 fprintf(stderr, "%s:%d: error: ", cfg_parser->filename,
1018 vfprintf(stderr, fmt, args);
1019 fprintf(stderr, "\n");
1022 /** print error with file and line number */
1023 void ub_c_error_msg(const char* fmt, ...)
1026 va_start(args, fmt);
1027 ub_c_error_va_list(fmt, args);
1031 void ub_c_error(const char *str)
1033 cfg_parser->errors++;
1034 fprintf(stderr, "%s:%d: error: %s\n", cfg_parser->filename,
1035 cfg_parser->line, str);
1043 int cfg_strlist_append(struct config_strlist_head* list, char* item)
1045 struct config_strlist *s;
1048 s = (struct config_strlist*)calloc(1, sizeof(struct config_strlist));
1054 list->last->next = s;
1062 cfg_strlist_insert(struct config_strlist** head, char* item)
1064 struct config_strlist *s;
1067 s = (struct config_strlist*)calloc(1, sizeof(struct config_strlist));
1077 cfg_str2list_insert(struct config_str2list** head, char* item, char* i2)
1079 struct config_str2list *s;
1080 if(!item || !i2 || !head)
1082 s = (struct config_str2list*)calloc(1, sizeof(struct config_str2list));
1093 cfg_convert_timeval(const char* str)
1097 memset(&tm, 0, sizeof(tm));
1098 if(strlen(str) < 14)
1100 if(sscanf(str, "%4d%2d%2d%2d%2d%2d", &tm.tm_year, &tm.tm_mon,
1101 &tm.tm_mday, &tm.tm_hour, &tm.tm_min, &tm.tm_sec) != 6)
1106 if (tm.tm_year < 70) return 0;
1107 if (tm.tm_mon < 0 || tm.tm_mon > 11) return 0;
1108 if (tm.tm_mday < 1 || tm.tm_mday > 31) return 0;
1109 if (tm.tm_hour < 0 || tm.tm_hour > 23) return 0;
1110 if (tm.tm_min < 0 || tm.tm_min > 59) return 0;
1111 if (tm.tm_sec < 0 || tm.tm_sec > 59) return 0;
1112 /* call ldns conversion function */
1113 t = sldns_mktime_from_utc(&tm);
1118 cfg_count_numbers(const char* s)
1120 /* format ::= (sp num)+ sp */
1121 /* num ::= [-](0-9)+ */
1122 /* sp ::= (space|tab)* */
1125 while(*s && isspace((unsigned char)*s))
1127 if(!*s) /* end of string */
1131 if(!*s) /* only - not allowed */
1133 if(!isdigit((unsigned char)*s)) /* bad character */
1135 while(*s && isdigit((unsigned char)*s))
1142 /** all digit number */
1143 static int isalldigit(const char* str, size_t l)
1147 if(!isdigit((unsigned char)str[i]))
1153 cfg_parse_memsize(const char* str, size_t* res)
1157 if(!str || (len=(size_t)strlen(str)) == 0) {
1158 log_err("not a size: '%s'", str);
1161 if(isalldigit(str, len)) {
1162 *res = (size_t)atol(str);
1165 /* check appended num */
1166 while(len>0 && str[len-1]==' ')
1168 if(len > 1 && str[len-1] == 'b')
1170 else if(len > 1 && str[len-1] == 'B')
1173 if(len > 1 && tolower((unsigned char)str[len-1]) == 'g')
1174 mult = 1024*1024*1024;
1175 else if(len > 1 && tolower((unsigned char)str[len-1]) == 'm')
1177 else if(len > 1 && tolower((unsigned char)str[len-1]) == 'k')
1179 else if(len > 0 && isdigit((unsigned char)str[len-1]))
1182 log_err("unknown size specifier: '%s'", str);
1185 while(len>1 && str[len-2]==' ')
1188 if(!isalldigit(str, len-1)) {
1189 log_err("unknown size specifier: '%s'", str);
1192 *res = ((size_t)atol(str)) * mult;
1197 config_apply(struct config_file* config)
1199 MAX_TTL = (time_t)config->max_ttl;
1200 MIN_TTL = (time_t)config->min_ttl;
1201 RTT_MIN_TIMEOUT = config->infra_cache_min_rtt;
1202 EDNS_ADVERTISED_SIZE = (uint16_t)config->edns_buffer_size;
1203 MINIMAL_RESPONSES = config->minimal_responses;
1204 RRSET_ROUNDROBIN = config->rrset_roundrobin;
1205 log_set_time_asc(config->log_time_ascii);
1208 void config_lookup_uid(struct config_file* cfg)
1210 #ifdef HAVE_GETPWNAM
1211 /* translate username into uid and gid */
1212 if(cfg->username && cfg->username[0]) {
1214 if((pwd = getpwnam(cfg->username)) != NULL) {
1215 cfg_uid = pwd->pw_uid;
1216 cfg_gid = pwd->pw_gid;
1225 * Calculate string length of full pathname in original filesys
1226 * @param fname: the path name to convert.
1227 * Must not be null or empty.
1228 * @param cfg: config struct for chroot and chdir (if set).
1229 * @param use_chdir: if false, only chroot is applied.
1230 * @return length of string.
1231 * remember to allocate one more for 0 at end in mallocs.
1234 strlen_after_chroot(const char* fname, struct config_file* cfg, int use_chdir)
1238 if(cfg->chrootdir && cfg->chrootdir[0] &&
1239 strncmp(cfg->chrootdir, fname, strlen(cfg->chrootdir)) == 0) {
1240 /* already full pathname, return it */
1241 return strlen(fname);
1244 if(cfg->chrootdir && cfg->chrootdir[0]) {
1245 /* start with chrootdir */
1246 len += strlen(cfg->chrootdir);
1250 #ifdef UB_ON_WINDOWS
1251 if(fname[0] != 0 && fname[1] == ':') {
1252 /* full path, no chdir */
1255 if(fname[0] == '/' || !use_chdir) {
1256 /* full path, no chdir */
1257 } else if(cfg->directory && cfg->directory[0]) {
1259 if(slashit && cfg->directory[0] != '/')
1261 if(cfg->chrootdir && cfg->chrootdir[0] &&
1262 strncmp(cfg->chrootdir, cfg->directory,
1263 strlen(cfg->chrootdir)) == 0)
1264 len += strlen(cfg->directory)-strlen(cfg->chrootdir);
1265 else len += strlen(cfg->directory);
1269 if(slashit && fname[0] != '/')
1271 len += strlen(fname);
1276 fname_after_chroot(const char* fname, struct config_file* cfg, int use_chdir)
1278 size_t len = strlen_after_chroot(fname, cfg, use_chdir)+1;
1280 char* buf = (char*)malloc(len);
1284 /* is fname already in chroot ? */
1285 if(cfg->chrootdir && cfg->chrootdir[0] &&
1286 strncmp(cfg->chrootdir, fname, strlen(cfg->chrootdir)) == 0) {
1287 /* already full pathname, return it */
1288 (void)strlcpy(buf, fname, len);
1293 if(cfg->chrootdir && cfg->chrootdir[0]) {
1294 /* start with chrootdir */
1295 (void)strlcpy(buf, cfg->chrootdir, len);
1298 #ifdef UB_ON_WINDOWS
1299 if(fname[0] != 0 && fname[1] == ':') {
1300 /* full path, no chdir */
1304 if(fname[0] == '/' || !use_chdir) {
1305 /* full path, no chdir */
1306 } else if(cfg->directory && cfg->directory[0]) {
1308 if(slashit && cfg->directory[0] != '/')
1309 (void)strlcat(buf, "/", len);
1310 /* is the directory already in the chroot? */
1311 if(cfg->chrootdir && cfg->chrootdir[0] &&
1312 strncmp(cfg->chrootdir, cfg->directory,
1313 strlen(cfg->chrootdir)) == 0)
1314 (void)strlcat(buf, cfg->directory+strlen(cfg->chrootdir),
1316 else (void)strlcat(buf, cfg->directory, len);
1320 if(slashit && fname[0] != '/')
1321 (void)strlcat(buf, "/", len);
1322 (void)strlcat(buf, fname, len);
1327 /** return next space character in string */
1328 static char* next_space_pos(const char* str)
1330 char* sp = strchr(str, ' ');
1331 char* tab = strchr(str, '\t');
1336 return (sp<tab)?sp:tab;
1339 /** return last space character in string */
1340 static char* last_space_pos(const char* str)
1342 char* sp = strrchr(str, ' ');
1343 char* tab = strrchr(str, '\t');
1348 return (sp>tab)?sp:tab;
1352 cfg_parse_local_zone(struct config_file* cfg, const char* val)
1354 const char *type, *name_end, *name;
1357 /* parse it as: [zone_name] [between stuff] [zone_type] */
1359 while(*name && isspace((unsigned char)*name))
1362 log_err("syntax error: too short: %s", val);
1365 name_end = next_space_pos(name);
1366 if(!name_end || !*name_end) {
1367 log_err("syntax error: expected zone type: %s", val);
1370 if (name_end - name > 255) {
1371 log_err("syntax error: bad zone name: %s", val);
1374 (void)strlcpy(buf, name, sizeof(buf));
1375 buf[name_end-name] = '\0';
1377 type = last_space_pos(name_end);
1378 while(type && *type && isspace((unsigned char)*type))
1380 if(!type || !*type) {
1381 log_err("syntax error: expected zone type: %s", val);
1385 if(strcmp(type, "nodefault")==0) {
1386 return cfg_strlist_insert(&cfg->local_zones_nodefault,
1389 return cfg_str2list_insert(&cfg->local_zones, strdup(buf),
1394 char* cfg_ptr_reverse(char* str)
1400 struct sockaddr_storage addr;
1403 /* parse it as: [IP] [between stuff] [name] */
1405 while(*ip && isspace((unsigned char)*ip))
1408 log_err("syntax error: too short: %s", str);
1411 ip_end = next_space_pos(ip);
1412 if(!ip_end || !*ip_end) {
1413 log_err("syntax error: expected name: %s", str);
1417 name = last_space_pos(ip_end);
1418 if(!name || !*name) {
1419 log_err("syntax error: expected name: %s", str);
1423 sscanf(ip, "%100s", buf);
1424 buf[sizeof(buf)-1]=0;
1426 if(!ipstrtoaddr(buf, UNBOUND_DNS_PORT, &addr, &addrlen)) {
1427 log_err("syntax error: cannot parse address: %s", str);
1432 * ddd.ddd.ddd.ddd.in-addr-arpa.
1433 * IPv6: (h.){32}.ip6.arpa. */
1435 if(addr_is_ip6(&addr, addrlen)) {
1437 const char* hex = "0123456789abcdef";
1440 memmove(ad, &((struct sockaddr_in6*)&addr)->sin6_addr,
1442 for(i=15; i>=0; i--) {
1444 *p++ = hex[ (b&0x0f) ];
1446 *p++ = hex[ (b&0xf0) >> 4 ];
1449 snprintf(buf+16*4, sizeof(buf)-16*4, "ip6.arpa. ");
1452 memmove(ad, &((struct sockaddr_in*)&addr)->sin_addr,
1454 snprintf(buf, sizeof(buf), "%u.%u.%u.%u.in-addr.arpa. ",
1455 (unsigned)ad[3], (unsigned)ad[2],
1456 (unsigned)ad[1], (unsigned)ad[0]);
1459 /* printed the reverse address, now the between goop and name on end */
1460 while(*ip_end && isspace((unsigned char)*ip_end))
1463 snprintf(buf+strlen(buf), sizeof(buf)-strlen(buf), "%.*s",
1464 (int)(name-ip_end), ip_end);
1466 snprintf(buf+strlen(buf), sizeof(buf)-strlen(buf), " PTR %s", name);
1468 result = strdup(buf);
1470 log_err("out of memory parsing %s", str);
1476 #ifdef UB_ON_WINDOWS
1478 w_lookup_reg_str(const char* key, const char* name)
1483 DWORD len = (DWORD)sizeof(buf);
1485 char* result = NULL;
1486 ret = RegOpenKeyEx(HKEY_LOCAL_MACHINE, key, 0, KEY_READ, &hk);
1487 if(ret == ERROR_FILE_NOT_FOUND)
1488 return NULL; /* key does not exist */
1489 else if(ret != ERROR_SUCCESS) {
1490 log_err("RegOpenKeyEx failed");
1493 ret = RegQueryValueEx(hk, (LPCTSTR)name, 0, &type, buf, &len);
1495 log_err("RegCloseKey");
1496 if(ret == ERROR_FILE_NOT_FOUND)
1497 return NULL; /* name does not exist */
1498 else if(ret != ERROR_SUCCESS) {
1499 log_err("RegQueryValueEx failed");
1502 if(type == REG_SZ || type == REG_MULTI_SZ || type == REG_EXPAND_SZ) {
1503 buf[sizeof(buf)-1] = 0;
1504 buf[sizeof(buf)-2] = 0; /* for multi_sz */
1505 result = strdup((char*)buf);
1506 if(!result) log_err("out of memory");
1510 #endif /* UB_ON_WINDOWS */
1512 void errinf(struct module_qstate* qstate, const char* str)
1514 struct config_strlist* p;
1515 if(qstate->env->cfg->val_log_level < 2 || !str)
1517 p = (struct config_strlist*)regional_alloc(qstate->region, sizeof(*p));
1519 log_err("malloc failure in validator-error-info string");
1523 p->str = regional_strdup(qstate->region, str);
1525 log_err("malloc failure in validator-error-info string");
1529 if(qstate->errinf) {
1530 struct config_strlist* q = qstate->errinf;
1534 } else qstate->errinf = p;
1537 void errinf_origin(struct module_qstate* qstate, struct sock_list *origin)
1539 struct sock_list* p;
1540 if(qstate->env->cfg->val_log_level < 2)
1542 for(p=origin; p; p=p->next) {
1545 snprintf(buf, sizeof(buf), "from ");
1546 else snprintf(buf, sizeof(buf), "and ");
1548 snprintf(buf+strlen(buf), sizeof(buf)-strlen(buf),
1551 addr_to_str(&p->addr, p->len, buf+strlen(buf),
1552 sizeof(buf)-strlen(buf));
1553 errinf(qstate, buf);
1557 char* errinf_to_str(struct module_qstate* qstate)
1561 size_t left = sizeof(buf);
1562 struct config_strlist* s;
1563 char dname[LDNS_MAX_DOMAINLEN+1];
1565 sldns_wire2str_type_buf(qstate->qinfo.qtype, t, sizeof(t));
1566 sldns_wire2str_class_buf(qstate->qinfo.qclass, c, sizeof(c));
1567 dname_str(qstate->qinfo.qname, dname);
1568 snprintf(p, left, "validation failure <%s %s %s>:", dname, t, c);
1569 left -= strlen(p); p += strlen(p);
1571 snprintf(p, left, " misc failure");
1572 else for(s=qstate->errinf; s; s=s->next) {
1573 snprintf(p, left, " %s", s->str);
1574 left -= strlen(p); p += strlen(p);
1578 log_err("malloc failure in errinf_to_str");
1582 void errinf_rrset(struct module_qstate* qstate, struct ub_packed_rrset_key *rr)
1585 char dname[LDNS_MAX_DOMAINLEN+1];
1587 if(qstate->env->cfg->val_log_level < 2 || !rr)
1589 sldns_wire2str_type_buf(ntohs(rr->rk.type), t, sizeof(t));
1590 sldns_wire2str_class_buf(ntohs(rr->rk.rrset_class), c, sizeof(c));
1591 dname_str(rr->rk.dname, dname);
1592 snprintf(buf, sizeof(buf), "for <%s %s %s>", dname, t, c);
1593 errinf(qstate, buf);
1596 void errinf_dname(struct module_qstate* qstate, const char* str, uint8_t* dname)
1599 char buf[LDNS_MAX_DOMAINLEN+1];
1600 if(qstate->env->cfg->val_log_level < 2 || !str || !dname)
1602 dname_str(dname, buf);
1603 snprintf(b, sizeof(b), "%s %s", str, buf);