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 "services/cache/infra.h"
60 #include "sldns/wire2str.h"
61 #include "sldns/parseutil.h"
69 /** from cfg username, after daemonise setup performed */
70 uid_t cfg_uid = (uid_t)-1;
71 /** from cfg username, after daemonise setup performed */
72 gid_t cfg_gid = (gid_t)-1;
73 /** for debug allow small timeout values for fast rollovers */
74 int autr_permit_small_holddown = 0;
76 /** global config during parsing */
77 struct config_parser_state* cfg_parser = 0;
79 /** init ports possible for use */
80 static void init_outgoing_availports(int* array, int num);
85 struct config_file* cfg;
86 cfg = (struct config_file*)calloc(1, sizeof(struct config_file));
89 /* the defaults if no config is present */
91 cfg->stat_interval = 0;
92 cfg->stat_cumulative = 0;
93 cfg->stat_extended = 0;
95 cfg->port = UNBOUND_DNS_PORT;
100 cfg->tcp_upstream = 0;
101 cfg->ssl_service_key = NULL;
102 cfg->ssl_service_pem = NULL;
104 cfg->ssl_upstream = 0;
106 cfg->log_time_ascii = 0;
107 cfg->log_queries = 0;
109 # ifdef USE_MINI_EVENT
110 /* select max 1024 sockets */
111 cfg->outgoing_num_ports = 960;
112 cfg->num_queries_per_thread = 512;
114 /* libevent can use many sockets */
115 cfg->outgoing_num_ports = 4096;
116 cfg->num_queries_per_thread = 1024;
118 cfg->outgoing_num_tcp = 10;
119 cfg->incoming_num_tcp = 10;
121 cfg->outgoing_num_ports = 48; /* windows is limited in num fds */
122 cfg->num_queries_per_thread = 24;
123 cfg->outgoing_num_tcp = 2; /* leaves 64-52=12 for: 4if,1stop,thread4 */
124 cfg->incoming_num_tcp = 2;
126 cfg->edns_buffer_size = 4096; /* 4k from rfc recommendation */
127 cfg->msg_buffer_size = 65552; /* 64 k + a small margin */
128 cfg->msg_cache_size = 4 * 1024 * 1024;
129 cfg->msg_cache_slabs = 4;
130 cfg->jostle_time = 200;
131 cfg->rrset_cache_size = 4 * 1024 * 1024;
132 cfg->rrset_cache_slabs = 4;
136 cfg->max_ttl = 3600 * 24;
137 cfg->max_negative_ttl = 3600;
139 cfg->prefetch_key = 0;
140 cfg->infra_cache_slabs = 4;
141 cfg->infra_cache_numhosts = 10000;
142 cfg->infra_cache_min_rtt = 50;
143 cfg->delay_close = 0;
144 if(!(cfg->outgoing_avail_ports = (int*)calloc(65536, sizeof(int))))
146 init_outgoing_availports(cfg->outgoing_avail_ports, 65536);
147 if(!(cfg->username = strdup(UB_USERNAME))) goto error_exit;
149 if(!(cfg->chrootdir = strdup(CHROOT_DIR))) goto error_exit;
151 if(!(cfg->directory = strdup(RUN_DIR))) goto error_exit;
152 if(!(cfg->logfile = strdup(""))) goto error_exit;
153 if(!(cfg->pidfile = strdup(PIDFILE))) goto error_exit;
154 if(!(cfg->target_fetch_policy = strdup("3 2 1 0 0"))) goto error_exit;
155 cfg->donotqueryaddrs = NULL;
156 cfg->donotquery_localhost = 1;
157 cfg->root_hints = NULL;
158 cfg->do_daemonize = 1;
159 cfg->if_automatic = 0;
162 cfg->so_reuseport = 0;
163 cfg->ip_transparent = 0;
166 cfg->num_out_ifs = 0;
169 cfg->forwards = NULL;
171 cfg->harden_short_bufsize = 0;
172 cfg->harden_large_queries = 0;
173 cfg->harden_glue = 1;
174 cfg->harden_dnssec_stripped = 1;
175 cfg->harden_below_nxdomain = 0;
176 cfg->harden_referral_path = 0;
177 cfg->harden_algo_downgrade = 0;
178 cfg->use_caps_bits_for_id = 0;
179 cfg->caps_whitelist = NULL;
180 cfg->private_address = NULL;
181 cfg->private_domain = NULL;
182 cfg->unwanted_threshold = 0;
183 cfg->hide_identity = 0;
184 cfg->hide_version = 0;
185 cfg->identity = NULL;
187 cfg->auto_trust_anchor_file_list = NULL;
188 cfg->trust_anchor_file_list = NULL;
189 cfg->trust_anchor_list = NULL;
190 cfg->trusted_keys_file_list = NULL;
191 cfg->dlv_anchor_file = NULL;
192 cfg->dlv_anchor_list = NULL;
193 cfg->domain_insecure = NULL;
194 cfg->val_date_override = 0;
195 cfg->val_sig_skew_min = 3600; /* at least daylight savings trouble */
196 cfg->val_sig_skew_max = 86400; /* at most timezone settings trouble */
197 cfg->val_clean_additional = 1;
198 cfg->val_log_level = 0;
199 cfg->val_log_squelch = 0;
200 cfg->val_permissive_mode = 0;
202 cfg->add_holddown = 30*24*3600;
203 cfg->del_holddown = 30*24*3600;
204 cfg->keep_missing = 366*24*3600; /* one year plus a little leeway */
205 cfg->permit_small_holddown = 0;
206 cfg->key_cache_size = 4 * 1024 * 1024;
207 cfg->key_cache_slabs = 4;
208 cfg->neg_cache_size = 1 * 1024 * 1024;
209 cfg->local_zones = NULL;
210 cfg->local_zones_nodefault = NULL;
211 cfg->local_data = NULL;
212 cfg->unblock_lan_zones = 0;
213 cfg->python_script = NULL;
214 cfg->remote_control_enable = 0;
215 cfg->control_ifs = NULL;
216 cfg->control_port = UNBOUND_CONTROL_PORT;
217 cfg->remote_control_use_cert = 1;
218 cfg->minimal_responses = 0;
219 cfg->rrset_roundrobin = 0;
220 cfg->max_udp_size = 4096;
221 if(!(cfg->server_key_file = strdup(RUN_DIR"/unbound_server.key")))
223 if(!(cfg->server_cert_file = strdup(RUN_DIR"/unbound_server.pem")))
225 if(!(cfg->control_key_file = strdup(RUN_DIR"/unbound_control.key")))
227 if(!(cfg->control_cert_file = strdup(RUN_DIR"/unbound_control.pem")))
230 if(!(cfg->module_conf = strdup("validator iterator"))) goto error_exit;
231 if(!(cfg->val_nsec3_key_iterations =
232 strdup("1024 150 2048 500 4096 2500"))) goto error_exit;
233 #if defined(DNSTAP_SOCKET_PATH)
234 if(!(cfg->dnstap_socket_path = strdup(DNSTAP_SOCKET_PATH)))
238 cfg->ratelimit_slabs = 4;
239 cfg->ratelimit_size = 4*1024*1024;
240 cfg->ratelimit_for_domain = NULL;
241 cfg->ratelimit_below_domain = NULL;
242 cfg->ratelimit_factor = 10;
249 struct config_file* config_create_forlib(void)
251 struct config_file* cfg = config_create();
252 if(!cfg) return NULL;
253 /* modifications for library use, less verbose, less memory */
254 free(cfg->chrootdir);
255 cfg->chrootdir = NULL;
257 cfg->outgoing_num_ports = 16; /* in library use, this is 'reasonable'
258 and probably within the ulimit(maxfds) of the user */
259 cfg->outgoing_num_tcp = 2;
260 cfg->msg_cache_size = 1024*1024;
261 cfg->msg_cache_slabs = 1;
262 cfg->rrset_cache_size = 1024*1024;
263 cfg->rrset_cache_slabs = 1;
264 cfg->infra_cache_slabs = 1;
266 cfg->key_cache_size = 1024*1024;
267 cfg->key_cache_slabs = 1;
268 cfg->neg_cache_size = 100 * 1024;
269 cfg->donotquery_localhost = 0; /* allow, so that you can ask a
270 forward nameserver running on localhost */
271 cfg->val_log_level = 2; /* to fill why_bogus with */
272 cfg->val_log_squelch = 1;
276 /** check that the value passed is >= 0 */
277 #define IS_NUMBER_OR_ZERO \
278 if(atoi(val) == 0 && strcmp(val, "0") != 0) return 0
279 /** check that the value passed is > 0 */
280 #define IS_NONZERO_NUMBER \
281 if(atoi(val) == 0) return 0
282 /** check that the value passed is not 0 and a power of 2 */
283 #define IS_POW2_NUMBER \
284 if(atoi(val) == 0 || !is_pow2((size_t)atoi(val))) return 0
285 /** check that the value passed is yes or no */
286 #define IS_YES_OR_NO \
287 if(strcmp(val, "yes") != 0 && strcmp(val, "no") != 0) return 0
288 /** put integer_or_zero into variable */
289 #define S_NUMBER_OR_ZERO(str, var) if(strcmp(opt, str) == 0) \
290 { IS_NUMBER_OR_ZERO; cfg->var = atoi(val); }
291 /** put integer_nonzero into variable */
292 #define S_NUMBER_NONZERO(str, var) if(strcmp(opt, str) == 0) \
293 { IS_NONZERO_NUMBER; cfg->var = atoi(val); }
294 /** put integer_or_zero into unsigned */
295 #define S_UNSIGNED_OR_ZERO(str, var) if(strcmp(opt, str) == 0) \
296 { IS_NUMBER_OR_ZERO; cfg->var = (unsigned)atoi(val); }
297 /** put integer_or_zero into size_t */
298 #define S_SIZET_OR_ZERO(str, var) if(strcmp(opt, str) == 0) \
299 { IS_NUMBER_OR_ZERO; cfg->var = (size_t)atoi(val); }
300 /** put integer_nonzero into size_t */
301 #define S_SIZET_NONZERO(str, var) if(strcmp(opt, str) == 0) \
302 { IS_NONZERO_NUMBER; cfg->var = (size_t)atoi(val); }
303 /** put yesno into variable */
304 #define S_YNO(str, var) if(strcmp(opt, str) == 0) \
305 { IS_YES_OR_NO; cfg->var = (strcmp(val, "yes") == 0); }
306 /** put memsize into variable */
307 #define S_MEMSIZE(str, var) if(strcmp(opt, str)==0) \
308 { return cfg_parse_memsize(val, &cfg->var); }
309 /** put pow2 number into variable */
310 #define S_POW2(str, var) if(strcmp(opt, str)==0) \
311 { IS_POW2_NUMBER; cfg->var = (size_t)atoi(val); }
312 /** put string into variable */
313 #define S_STR(str, var) if(strcmp(opt, str)==0) \
314 { free(cfg->var); return (cfg->var = strdup(val)) != NULL; }
315 /** put string into strlist */
316 #define S_STRLIST(str, var) if(strcmp(opt, str)==0) \
317 { return cfg_strlist_insert(&cfg->var, strdup(val)); }
319 int config_set_option(struct config_file* cfg, const char* opt,
322 S_NUMBER_OR_ZERO("verbosity:", verbosity)
323 else if(strcmp(opt, "statistics-interval:") == 0) {
324 if(strcmp(val, "0") == 0 || strcmp(val, "") == 0)
325 cfg->stat_interval = 0;
326 else if(atoi(val) == 0)
328 else cfg->stat_interval = atoi(val);
329 } else if(strcmp(opt, "num_threads:") == 0) {
330 /* not supported, library must have 1 thread in bgworker */
332 } else if(strcmp(opt, "outgoing-port-permit:") == 0) {
333 return cfg_mark_ports(val, 1,
334 cfg->outgoing_avail_ports, 65536);
335 } else if(strcmp(opt, "outgoing-port-avoid:") == 0) {
336 return cfg_mark_ports(val, 0,
337 cfg->outgoing_avail_ports, 65536);
338 } else if(strcmp(opt, "local-zone:") == 0) {
339 return cfg_parse_local_zone(cfg, val);
340 } else if(strcmp(opt, "val-override-date:") == 0) {
341 if(strcmp(val, "") == 0 || strcmp(val, "0") == 0) {
342 cfg->val_date_override = 0;
343 } else if(strlen(val) == 14) {
344 cfg->val_date_override = cfg_convert_timeval(val);
345 return cfg->val_date_override != 0;
347 if(atoi(val) == 0) return 0;
348 cfg->val_date_override = (uint32_t)atoi(val);
350 } else if(strcmp(opt, "local-data-ptr:") == 0) {
351 char* ptr = cfg_ptr_reverse((char*)opt);
352 return cfg_strlist_insert(&cfg->local_data, ptr);
353 } else if(strcmp(opt, "logfile:") == 0) {
356 return (cfg->logfile = strdup(val)) != NULL;
358 else if(strcmp(opt, "log-time-ascii:") == 0)
359 { IS_YES_OR_NO; cfg->log_time_ascii = (strcmp(val, "yes") == 0);
360 log_set_time_asc(cfg->log_time_ascii); }
361 else S_SIZET_NONZERO("max-udp-size:", max_udp_size)
362 else S_YNO("use-syslog:", use_syslog)
363 else S_YNO("extended-statistics:", stat_extended)
364 else S_YNO("statistics-cumulative:", stat_cumulative)
365 else S_YNO("do-ip4:", do_ip4)
366 else S_YNO("do-ip6:", do_ip6)
367 else S_YNO("do-udp:", do_udp)
368 else S_YNO("do-tcp:", do_tcp)
369 else S_YNO("tcp-upstream:", tcp_upstream)
370 else S_YNO("ssl-upstream:", ssl_upstream)
371 else S_STR("ssl-service-key:", ssl_service_key)
372 else S_STR("ssl-service-pem:", ssl_service_pem)
373 else S_NUMBER_NONZERO("ssl-port:", ssl_port)
374 else S_YNO("interface-automatic:", if_automatic)
375 else S_YNO("do-daemonize:", do_daemonize)
376 else S_NUMBER_NONZERO("port:", port)
377 else S_NUMBER_NONZERO("outgoing-range:", outgoing_num_ports)
378 else S_SIZET_OR_ZERO("outgoing-num-tcp:", outgoing_num_tcp)
379 else S_SIZET_OR_ZERO("incoming-num-tcp:", incoming_num_tcp)
380 else S_SIZET_NONZERO("edns-buffer-size:", edns_buffer_size)
381 else S_SIZET_NONZERO("msg-buffer-size:", msg_buffer_size)
382 else S_MEMSIZE("msg-cache-size:", msg_cache_size)
383 else S_POW2("msg-cache-slabs:", msg_cache_slabs)
384 else S_SIZET_NONZERO("num-queries-per-thread:",num_queries_per_thread)
385 else S_SIZET_OR_ZERO("jostle-timeout:", jostle_time)
386 else S_MEMSIZE("so-rcvbuf:", so_rcvbuf)
387 else S_MEMSIZE("so-sndbuf:", so_sndbuf)
388 else S_YNO("so-reuseport:", so_reuseport)
389 else S_YNO("ip-transparent:", ip_transparent)
390 else S_MEMSIZE("rrset-cache-size:", rrset_cache_size)
391 else S_POW2("rrset-cache-slabs:", rrset_cache_slabs)
392 else S_YNO("prefetch:", prefetch)
393 else S_YNO("prefetch-key:", prefetch_key)
394 else if(strcmp(opt, "cache-max-ttl:") == 0)
395 { IS_NUMBER_OR_ZERO; cfg->max_ttl = atoi(val); MAX_TTL=(time_t)cfg->max_ttl;}
396 else if(strcmp(opt, "cache-max-negative-ttl:") == 0)
397 { IS_NUMBER_OR_ZERO; cfg->max_negative_ttl = atoi(val); MAX_NEG_TTL=(time_t)cfg->max_negative_ttl;}
398 else if(strcmp(opt, "cache-min-ttl:") == 0)
399 { IS_NUMBER_OR_ZERO; cfg->min_ttl = atoi(val); MIN_TTL=(time_t)cfg->min_ttl;}
400 else if(strcmp(opt, "infra-cache-min-rtt:") == 0) {
401 IS_NUMBER_OR_ZERO; cfg->infra_cache_min_rtt = atoi(val);
402 RTT_MIN_TIMEOUT=cfg->infra_cache_min_rtt;
404 else S_NUMBER_OR_ZERO("infra-host-ttl:", host_ttl)
405 else S_POW2("infra-cache-slabs:", infra_cache_slabs)
406 else S_SIZET_NONZERO("infra-cache-numhosts:", infra_cache_numhosts)
407 else S_NUMBER_OR_ZERO("delay-close:", delay_close)
408 else S_STR("chroot:", chrootdir)
409 else S_STR("username:", username)
410 else S_STR("directory:", directory)
411 else S_STR("pidfile:", pidfile)
412 else S_YNO("hide-identity:", hide_identity)
413 else S_YNO("hide-version:", hide_version)
414 else S_STR("identity:", identity)
415 else S_STR("version:", version)
416 else S_STRLIST("root-hints:", root_hints)
417 else S_STR("target-fetch-policy:", target_fetch_policy)
418 else S_YNO("harden-glue:", harden_glue)
419 else S_YNO("harden-short-bufsize:", harden_short_bufsize)
420 else S_YNO("harden-large-queries:", harden_large_queries)
421 else S_YNO("harden-dnssec-stripped:", harden_dnssec_stripped)
422 else S_YNO("harden-below-nxdomain:", harden_below_nxdomain)
423 else S_YNO("harden-referral-path:", harden_referral_path)
424 else S_YNO("harden-algo-downgrade:", harden_algo_downgrade)
425 else S_YNO("use-caps-for-id", use_caps_bits_for_id)
426 else S_STRLIST("caps-whitelist:", caps_whitelist)
427 else S_SIZET_OR_ZERO("unwanted-reply-threshold:", unwanted_threshold)
428 else S_STRLIST("private-address:", private_address)
429 else S_STRLIST("private-domain:", private_domain)
430 else S_YNO("do-not-query-localhost:", donotquery_localhost)
431 else S_STRLIST("do-not-query-address:", donotqueryaddrs)
432 else S_STRLIST("auto-trust-anchor-file:", auto_trust_anchor_file_list)
433 else S_STRLIST("trust-anchor-file:", trust_anchor_file_list)
434 else S_STRLIST("trust-anchor:", trust_anchor_list)
435 else S_STRLIST("trusted-keys-file:", trusted_keys_file_list)
436 else S_STR("dlv-anchor-file:", dlv_anchor_file)
437 else S_STRLIST("dlv-anchor:", dlv_anchor_list)
438 else S_STRLIST("domain-insecure:", domain_insecure)
439 else S_NUMBER_OR_ZERO("val-bogus-ttl:", bogus_ttl)
440 else S_YNO("val-clean-additional:", val_clean_additional)
441 else S_NUMBER_OR_ZERO("val-log-level:", val_log_level)
442 else S_YNO("val-log-squelch:", val_log_squelch)
443 else S_YNO("log-queries:", log_queries)
444 else S_YNO("val-permissive-mode:", val_permissive_mode)
445 else S_YNO("ignore-cd-flag:", ignore_cd)
446 else S_STR("val-nsec3-keysize-iterations:", val_nsec3_key_iterations)
447 else S_UNSIGNED_OR_ZERO("add-holddown:", add_holddown)
448 else S_UNSIGNED_OR_ZERO("del-holddown:", del_holddown)
449 else S_UNSIGNED_OR_ZERO("keep-missing:", keep_missing)
450 else if(strcmp(opt, "permit-small-holddown:") == 0)
451 { IS_YES_OR_NO; cfg->permit_small_holddown = (strcmp(val, "yes") == 0);
452 autr_permit_small_holddown = cfg->permit_small_holddown; }
453 else S_MEMSIZE("key-cache-size:", key_cache_size)
454 else S_POW2("key-cache-slabs:", key_cache_slabs)
455 else S_MEMSIZE("neg-cache-size:", neg_cache_size)
456 else S_YNO("minimal-responses:", minimal_responses)
457 else S_YNO("rrset-roundrobin:", rrset_roundrobin)
458 else S_STRLIST("local-data:", local_data)
459 else S_YNO("unblock-lan-zones:", unblock_lan_zones)
460 else S_YNO("control-enable:", remote_control_enable)
461 else S_STRLIST("control-interface:", control_ifs)
462 else S_NUMBER_NONZERO("control-port:", control_port)
463 else S_STR("server-key-file:", server_key_file)
464 else S_STR("server-cert-file:", server_cert_file)
465 else S_STR("control-key-file:", control_key_file)
466 else S_STR("control-cert-file:", control_cert_file)
467 else S_STR("module-config:", module_conf)
468 else S_STR("python-script:", python_script)
469 else if(strcmp(opt, "ratelimit:") == 0) {
470 IS_NUMBER_OR_ZERO; cfg->ratelimit = atoi(val);
471 infra_dp_ratelimit=cfg->ratelimit;
473 else S_MEMSIZE("ratelimit-size:", ratelimit_size)
474 else S_POW2("ratelimit-slabs:", ratelimit_slabs)
475 else S_NUMBER_OR_ZERO("ratelimit-factor:", ratelimit_factor)
476 /* val_sig_skew_min and max are copied into val_env during init,
477 * so this does not update val_env with set_option */
478 else if(strcmp(opt, "val-sig-skew-min:") == 0)
479 { IS_NUMBER_OR_ZERO; cfg->val_sig_skew_min = (int32_t)atoi(val); }
480 else if(strcmp(opt, "val-sig-skew-max:") == 0)
481 { IS_NUMBER_OR_ZERO; cfg->val_sig_skew_max = (int32_t)atoi(val); }
482 else if (strcmp(opt, "outgoing-interface:") == 0) {
483 char* d = strdup(val);
485 (char**)reallocarray(NULL, (size_t)cfg->num_out_ifs+1, sizeof(char*));
486 if(!d || !oi) { free(d); free(oi); return -1; }
487 if(cfg->out_ifs && cfg->num_out_ifs) {
488 memmove(oi, cfg->out_ifs, cfg->num_out_ifs*sizeof(char*));
491 oi[cfg->num_out_ifs++] = d;
494 /* unknown or unsupported (from the set_option interface):
495 * interface, outgoing-interface, access-control,
496 * stub-zone, name, stub-addr, stub-host, stub-prime
497 * forward-first, stub-first,
498 * forward-zone, name, forward-addr, forward-host,
499 * ratelimit-for-domain, ratelimit-below-domain */
505 void config_print_func(char* line, void* arg)
507 FILE* f = (FILE*)arg;
508 (void)fprintf(f, "%s\n", line);
511 /** collate func arg */
512 struct config_collate_arg {
513 /** list of result items */
514 struct config_strlist_head list;
515 /** if a malloc error occurred, 0 is OK */
519 void config_collate_func(char* line, void* arg)
521 struct config_collate_arg* m = (struct config_collate_arg*)arg;
524 if(!cfg_strlist_append(&m->list, strdup(line)))
528 int config_get_option_list(struct config_file* cfg, const char* opt,
529 struct config_strlist** list)
531 struct config_collate_arg m;
532 memset(&m, 0, sizeof(m));
534 if(!config_get_option(cfg, opt, config_collate_func, &m))
537 config_delstrlist(m.list.first);
540 *list = m.list.first;
545 config_get_option_collate(struct config_file* cfg, const char* opt, char** str)
547 struct config_strlist* list = NULL;
550 if((r = config_get_option_list(cfg, opt, &list)) != 0)
552 *str = config_collate_cat(list);
553 config_delstrlist(list);
559 config_collate_cat(struct config_strlist* list)
561 size_t total = 0, left;
562 struct config_strlist* s;
564 if(!list) /* no elements */
566 if(list->next == NULL) /* one element , no newline at end. */
567 return strdup(list->str);
568 /* count total length */
569 for(s=list; s; s=s->next)
570 total += strlen(s->str) + 1; /* len + newline */
571 left = total+1; /* one extra for nul at end */
576 for(s=list; s; s=s->next) {
577 size_t this = strlen(s->str);
578 if(this+2 > left) { /* sanity check */
582 snprintf(w, left, "%s\n", s->str);
590 /** compare and print decimal option */
591 #define O_DEC(opt, str, var) if(strcmp(opt, str)==0) \
592 {snprintf(buf, len, "%d", (int)cfg->var); \
594 /** compare and print unsigned option */
595 #define O_UNS(opt, str, var) if(strcmp(opt, str)==0) \
596 {snprintf(buf, len, "%u", (unsigned)cfg->var); \
598 /** compare and print yesno option */
599 #define O_YNO(opt, str, var) if(strcmp(opt, str)==0) \
600 {func(cfg->var?"yes":"no", arg);}
601 /** compare and print string option */
602 #define O_STR(opt, str, var) if(strcmp(opt, str)==0) \
603 {func(cfg->var?cfg->var:"", arg);}
604 /** compare and print array option */
605 #define O_IFC(opt, str, num, arr) if(strcmp(opt, str)==0) \
606 {int i; for(i=0; i<cfg->num; i++) func(cfg->arr[i], arg);}
607 /** compare and print memorysize option */
608 #define O_MEM(opt, str, var) if(strcmp(opt, str)==0) { \
609 if(cfg->var > 1024*1024*1024) { \
610 size_t f=cfg->var/(size_t)1000000, b=cfg->var%(size_t)1000000; \
611 snprintf(buf, len, "%u%6.6u", (unsigned)f, (unsigned)b); \
612 } else snprintf(buf, len, "%u", (unsigned)cfg->var); \
614 /** compare and print list option */
615 #define O_LST(opt, name, lst) if(strcmp(opt, name)==0) { \
616 struct config_strlist* p = cfg->lst; \
617 for(p = cfg->lst; p; p = p->next) \
620 /** compare and print list option */
621 #define O_LS2(opt, name, lst) if(strcmp(opt, name)==0) { \
622 struct config_str2list* p = cfg->lst; \
623 for(p = cfg->lst; p; p = p->next) \
624 snprintf(buf, len, "%s %s\n", p->str, p->str2); \
629 config_get_option(struct config_file* cfg, const char* opt,
630 void (*func)(char*,void*), void* arg)
633 size_t len = sizeof(buf);
634 fptr_ok(fptr_whitelist_print_func(func));
635 O_DEC(opt, "verbosity", verbosity)
636 else O_DEC(opt, "statistics-interval", stat_interval)
637 else O_YNO(opt, "statistics-cumulative", stat_cumulative)
638 else O_YNO(opt, "extended-statistics", stat_extended)
639 else O_YNO(opt, "use-syslog", use_syslog)
640 else O_YNO(opt, "log-time-ascii", log_time_ascii)
641 else O_DEC(opt, "num-threads", num_threads)
642 else O_IFC(opt, "interface", num_ifs, ifs)
643 else O_IFC(opt, "outgoing-interface", num_out_ifs, out_ifs)
644 else O_YNO(opt, "interface-automatic", if_automatic)
645 else O_DEC(opt, "port", port)
646 else O_DEC(opt, "outgoing-range", outgoing_num_ports)
647 else O_DEC(opt, "outgoing-num-tcp", outgoing_num_tcp)
648 else O_DEC(opt, "incoming-num-tcp", incoming_num_tcp)
649 else O_DEC(opt, "edns-buffer-size", edns_buffer_size)
650 else O_DEC(opt, "msg-buffer-size", msg_buffer_size)
651 else O_MEM(opt, "msg-cache-size", msg_cache_size)
652 else O_DEC(opt, "msg-cache-slabs", msg_cache_slabs)
653 else O_DEC(opt, "num-queries-per-thread", num_queries_per_thread)
654 else O_UNS(opt, "jostle-timeout", jostle_time)
655 else O_MEM(opt, "so-rcvbuf", so_rcvbuf)
656 else O_MEM(opt, "so-sndbuf", so_sndbuf)
657 else O_YNO(opt, "so-reuseport", so_reuseport)
658 else O_YNO(opt, "ip-transparent", ip_transparent)
659 else O_MEM(opt, "rrset-cache-size", rrset_cache_size)
660 else O_DEC(opt, "rrset-cache-slabs", rrset_cache_slabs)
661 else O_YNO(opt, "prefetch-key", prefetch_key)
662 else O_YNO(opt, "prefetch", prefetch)
663 else O_DEC(opt, "cache-max-ttl", max_ttl)
664 else O_DEC(opt, "cache-max-negative-ttl", max_negative_ttl)
665 else O_DEC(opt, "cache-min-ttl", min_ttl)
666 else O_DEC(opt, "infra-host-ttl", host_ttl)
667 else O_DEC(opt, "infra-cache-slabs", infra_cache_slabs)
668 else O_DEC(opt, "infra-cache-min-rtt", infra_cache_min_rtt)
669 else O_MEM(opt, "infra-cache-numhosts", infra_cache_numhosts)
670 else O_UNS(opt, "delay-close", delay_close)
671 else O_YNO(opt, "do-ip4", do_ip4)
672 else O_YNO(opt, "do-ip6", do_ip6)
673 else O_YNO(opt, "do-udp", do_udp)
674 else O_YNO(opt, "do-tcp", do_tcp)
675 else O_YNO(opt, "tcp-upstream", tcp_upstream)
676 else O_YNO(opt, "ssl-upstream", ssl_upstream)
677 else O_STR(opt, "ssl-service-key", ssl_service_key)
678 else O_STR(opt, "ssl-service-pem", ssl_service_pem)
679 else O_DEC(opt, "ssl-port", ssl_port)
680 else O_YNO(opt, "do-daemonize", do_daemonize)
681 else O_STR(opt, "chroot", chrootdir)
682 else O_STR(opt, "username", username)
683 else O_STR(opt, "directory", directory)
684 else O_STR(opt, "logfile", logfile)
685 else O_YNO(opt, "log-queries", log_queries)
686 else O_STR(opt, "pidfile", pidfile)
687 else O_YNO(opt, "hide-identity", hide_identity)
688 else O_YNO(opt, "hide-version", hide_version)
689 else O_STR(opt, "identity", identity)
690 else O_STR(opt, "version", version)
691 else O_STR(opt, "target-fetch-policy", target_fetch_policy)
692 else O_YNO(opt, "harden-short-bufsize", harden_short_bufsize)
693 else O_YNO(opt, "harden-large-queries", harden_large_queries)
694 else O_YNO(opt, "harden-glue", harden_glue)
695 else O_YNO(opt, "harden-dnssec-stripped", harden_dnssec_stripped)
696 else O_YNO(opt, "harden-below-nxdomain", harden_below_nxdomain)
697 else O_YNO(opt, "harden-referral-path", harden_referral_path)
698 else O_YNO(opt, "harden-algo-downgrade", harden_algo_downgrade)
699 else O_YNO(opt, "use-caps-for-id", use_caps_bits_for_id)
700 else O_LST(opt, "caps-whitelist", caps_whitelist)
701 else O_DEC(opt, "unwanted-reply-threshold", unwanted_threshold)
702 else O_YNO(opt, "do-not-query-localhost", donotquery_localhost)
703 else O_STR(opt, "module-config", module_conf)
704 else O_STR(opt, "dlv-anchor-file", dlv_anchor_file)
705 else O_DEC(opt, "val-bogus-ttl", bogus_ttl)
706 else O_YNO(opt, "val-clean-additional", val_clean_additional)
707 else O_DEC(opt, "val-log-level", val_log_level)
708 else O_YNO(opt, "val-permissive-mode", val_permissive_mode)
709 else O_YNO(opt, "ignore-cd-flag", ignore_cd)
710 else O_STR(opt, "val-nsec3-keysize-iterations",val_nsec3_key_iterations)
711 else O_UNS(opt, "add-holddown", add_holddown)
712 else O_UNS(opt, "del-holddown", del_holddown)
713 else O_UNS(opt, "keep-missing", keep_missing)
714 else O_YNO(opt, "permit-small-holddown", permit_small_holddown)
715 else O_MEM(opt, "key-cache-size", key_cache_size)
716 else O_DEC(opt, "key-cache-slabs", key_cache_slabs)
717 else O_MEM(opt, "neg-cache-size", neg_cache_size)
718 else O_YNO(opt, "control-enable", remote_control_enable)
719 else O_DEC(opt, "control-port", control_port)
720 else O_STR(opt, "server-key-file", server_key_file)
721 else O_STR(opt, "server-cert-file", server_cert_file)
722 else O_STR(opt, "control-key-file", control_key_file)
723 else O_STR(opt, "control-cert-file", control_cert_file)
724 else O_LST(opt, "root-hints", root_hints)
725 else O_LS2(opt, "access-control", acls)
726 else O_LST(opt, "do-not-query-address", donotqueryaddrs)
727 else O_LST(opt, "private-address", private_address)
728 else O_LST(opt, "private-domain", private_domain)
729 else O_LST(opt, "auto-trust-anchor-file", auto_trust_anchor_file_list)
730 else O_LST(opt, "trust-anchor-file", trust_anchor_file_list)
731 else O_LST(opt, "trust-anchor", trust_anchor_list)
732 else O_LST(opt, "trusted-keys-file", trusted_keys_file_list)
733 else O_LST(opt, "dlv-anchor", dlv_anchor_list)
734 else O_LST(opt, "control-interface", control_ifs)
735 else O_LST(opt, "domain-insecure", domain_insecure)
736 else O_UNS(opt, "val-override-date", val_date_override)
737 else O_YNO(opt, "minimal-responses", minimal_responses)
738 else O_YNO(opt, "rrset-roundrobin", rrset_roundrobin)
739 else O_YNO(opt, "unblock-lan-zones", unblock_lan_zones)
740 else O_DEC(opt, "max-udp-size", max_udp_size)
741 else O_STR(opt, "python-script", python_script)
742 else O_DEC(opt, "ratelimit", ratelimit)
743 else O_MEM(opt, "ratelimit-size", ratelimit_size)
744 else O_DEC(opt, "ratelimit-slabs", ratelimit_slabs)
745 else O_LS2(opt, "ratelimit-for-domain", ratelimit_for_domain)
746 else O_LS2(opt, "ratelimit-below-domain", ratelimit_below_domain)
747 else O_DEC(opt, "ratelimit-factor", ratelimit_factor)
748 else O_DEC(opt, "val-sig-skew-min", val_sig_skew_min)
749 else O_DEC(opt, "val-sig-skew-max", val_sig_skew_max)
751 * outgoing-permit, outgoing-avoid - have list of ports
752 * local-zone - zones and nodefault variables
753 * local-data - see below
754 * local-data-ptr - converted to local-data entries
755 * stub-zone, name, stub-addr, stub-host, stub-prime
756 * forward-zone, name, forward-addr, forward-host
762 /** initialize the global cfg_parser object */
764 create_cfg_parser(struct config_file* cfg, char* filename, const char* chroot)
766 static struct config_parser_state st;
768 cfg_parser->filename = filename;
769 cfg_parser->line = 1;
770 cfg_parser->errors = 0;
771 cfg_parser->cfg = cfg;
772 cfg_parser->chroot = chroot;
777 config_read(struct config_file* cfg, const char* filename, const char* chroot)
780 char *fname = (char*)filename;
789 /* check for wildcards */
791 if(!(!strchr(fname, '*') && !strchr(fname, '?') && !strchr(fname, '[') &&
792 !strchr(fname, '{') && !strchr(fname, '~'))) {
793 verbose(VERB_QUERY, "wildcard found, processing %s", fname);
808 memset(&g, 0, sizeof(g));
809 r = glob(fname, flags, NULL, &g);
813 if(r == GLOB_NOMATCH) {
814 verbose(VERB_QUERY, "include: "
815 "no matches for %s", fname);
817 } else if(r == GLOB_NOSPACE) {
818 log_err("include: %s: "
819 "fnametern out of memory", fname);
820 } else if(r == GLOB_ABORTED) {
821 log_err("wildcard include: %s: expansion "
822 "aborted (%s)", fname, strerror(errno));
824 log_err("wildcard include: %s: expansion "
825 "failed (%s)", fname, strerror(errno));
827 /* ignore globs that yield no files */
830 /* process files found, if any */
831 for(i=0; i<(size_t)g.gl_pathc; i++) {
832 if(!config_read(cfg, g.gl_pathv[i], chroot)) {
833 log_err("error reading wildcard "
834 "include: %s", g.gl_pathv[i]);
842 #endif /* HAVE_GLOB */
844 in = fopen(fname, "r");
846 log_err("Could not open %s: %s", fname, strerror(errno));
849 create_cfg_parser(cfg, fname, chroot);
854 if(cfg_parser->errors != 0) {
855 fprintf(stderr, "read %s failed: %d errors in configuration file\n",
856 fname, cfg_parser->errors);
865 config_delstrlist(struct config_strlist* p)
867 struct config_strlist *np;
877 config_deldblstrlist(struct config_str2list* p)
879 struct config_str2list *np;
890 config_delstubs(struct config_stub* p)
892 struct config_stub* np;
896 config_delstrlist(p->hosts);
897 config_delstrlist(p->addrs);
904 config_delete(struct config_file* cfg)
908 free(cfg->chrootdir);
909 free(cfg->directory);
912 free(cfg->target_fetch_policy);
913 free(cfg->ssl_service_key);
914 free(cfg->ssl_service_pem);
917 for(i=0; i<cfg->num_ifs; i++)
923 for(i=0; i<cfg->num_out_ifs; i++)
924 free(cfg->out_ifs[i]);
927 config_delstubs(cfg->stubs);
928 config_delstubs(cfg->forwards);
929 config_delstrlist(cfg->donotqueryaddrs);
930 config_delstrlist(cfg->root_hints);
933 free(cfg->module_conf);
934 free(cfg->outgoing_avail_ports);
935 config_delstrlist(cfg->caps_whitelist);
936 config_delstrlist(cfg->private_address);
937 config_delstrlist(cfg->private_domain);
938 config_delstrlist(cfg->auto_trust_anchor_file_list);
939 config_delstrlist(cfg->trust_anchor_file_list);
940 config_delstrlist(cfg->trusted_keys_file_list);
941 config_delstrlist(cfg->trust_anchor_list);
942 config_delstrlist(cfg->domain_insecure);
943 free(cfg->dlv_anchor_file);
944 config_delstrlist(cfg->dlv_anchor_list);
945 config_deldblstrlist(cfg->acls);
946 free(cfg->val_nsec3_key_iterations);
947 config_deldblstrlist(cfg->local_zones);
948 config_delstrlist(cfg->local_zones_nodefault);
949 config_delstrlist(cfg->local_data);
950 config_delstrlist(cfg->control_ifs);
951 free(cfg->server_key_file);
952 free(cfg->server_cert_file);
953 free(cfg->control_key_file);
954 free(cfg->control_cert_file);
955 free(cfg->dns64_prefix);
956 free(cfg->dnstap_socket_path);
957 free(cfg->dnstap_identity);
958 free(cfg->dnstap_version);
959 config_deldblstrlist(cfg->ratelimit_for_domain);
960 config_deldblstrlist(cfg->ratelimit_below_domain);
965 init_outgoing_availports(int* a, int num)
967 /* generated with make iana_update */
968 const int iana_assigned[] = {
969 #include "util/iana_ports.inc"
970 -1 }; /* end marker to put behind trailing comma */
973 /* do not use <1024, that could be trouble with the system, privs */
974 for(i=1024; i<num; i++) {
977 /* create empty spot at 49152 to keep ephemeral ports available
978 * to other programs */
979 for(i=49152; i<49152+256; i++)
981 /* pick out all the IANA assigned ports */
982 for(i=0; iana_assigned[i]!=-1; i++) {
983 if(iana_assigned[i] < num)
984 a[iana_assigned[i]] = 0;
989 cfg_mark_ports(const char* str, int allow, int* avail, int num)
991 char* mid = strchr(str, '-');
993 int port = atoi(str);
994 if(port == 0 && strcmp(str, "0") != 0) {
995 log_err("cannot parse port number '%s'", str);
999 avail[port] = (allow?port:0);
1001 int i, low, high = atoi(mid+1);
1003 if(high == 0 && strcmp(mid+1, "0") != 0) {
1004 log_err("cannot parse port number '%s'", mid+1);
1007 if( (int)(mid-str)+1 >= (int)sizeof(buf) ) {
1008 log_err("cannot parse port number '%s'", str);
1012 memcpy(buf, str, (size_t)(mid-str));
1015 if(low == 0 && strcmp(buf, "0") != 0) {
1016 log_err("cannot parse port number '%s'", buf);
1019 for(i=low; i<=high; i++) {
1021 avail[i] = (allow?i:0);
1029 cfg_scan_ports(int* avail, int num)
1033 for(i=0; i<num; i++) {
1040 int cfg_condense_ports(struct config_file* cfg, int** avail)
1042 int num = cfg_scan_ports(cfg->outgoing_avail_ports, 65536);
1047 *avail = (int*)reallocarray(NULL, (size_t)num, sizeof(int));
1050 for(i=0; i<65536; i++) {
1051 if(cfg->outgoing_avail_ports[i])
1052 (*avail)[at++] = cfg->outgoing_avail_ports[i];
1054 log_assert(at == num);
1058 /** print error with file and line number */
1059 static void ub_c_error_va_list(const char *fmt, va_list args)
1061 cfg_parser->errors++;
1062 fprintf(stderr, "%s:%d: error: ", cfg_parser->filename,
1064 vfprintf(stderr, fmt, args);
1065 fprintf(stderr, "\n");
1068 /** print error with file and line number */
1069 void ub_c_error_msg(const char* fmt, ...)
1072 va_start(args, fmt);
1073 ub_c_error_va_list(fmt, args);
1077 void ub_c_error(const char *str)
1079 cfg_parser->errors++;
1080 fprintf(stderr, "%s:%d: error: %s\n", cfg_parser->filename,
1081 cfg_parser->line, str);
1089 int cfg_strlist_append(struct config_strlist_head* list, char* item)
1091 struct config_strlist *s;
1094 s = (struct config_strlist*)calloc(1, sizeof(struct config_strlist));
1100 list->last->next = s;
1108 cfg_strlist_insert(struct config_strlist** head, char* item)
1110 struct config_strlist *s;
1113 s = (struct config_strlist*)calloc(1, sizeof(struct config_strlist));
1123 cfg_str2list_insert(struct config_str2list** head, char* item, char* i2)
1125 struct config_str2list *s;
1126 if(!item || !i2 || !head)
1128 s = (struct config_str2list*)calloc(1, sizeof(struct config_str2list));
1139 cfg_convert_timeval(const char* str)
1143 memset(&tm, 0, sizeof(tm));
1144 if(strlen(str) < 14)
1146 if(sscanf(str, "%4d%2d%2d%2d%2d%2d", &tm.tm_year, &tm.tm_mon,
1147 &tm.tm_mday, &tm.tm_hour, &tm.tm_min, &tm.tm_sec) != 6)
1152 if (tm.tm_year < 70) return 0;
1153 if (tm.tm_mon < 0 || tm.tm_mon > 11) return 0;
1154 if (tm.tm_mday < 1 || tm.tm_mday > 31) return 0;
1155 if (tm.tm_hour < 0 || tm.tm_hour > 23) return 0;
1156 if (tm.tm_min < 0 || tm.tm_min > 59) return 0;
1157 if (tm.tm_sec < 0 || tm.tm_sec > 59) return 0;
1158 /* call ldns conversion function */
1159 t = sldns_mktime_from_utc(&tm);
1164 cfg_count_numbers(const char* s)
1166 /* format ::= (sp num)+ sp */
1167 /* num ::= [-](0-9)+ */
1168 /* sp ::= (space|tab)* */
1171 while(*s && isspace((unsigned char)*s))
1173 if(!*s) /* end of string */
1177 if(!*s) /* only - not allowed */
1179 if(!isdigit((unsigned char)*s)) /* bad character */
1181 while(*s && isdigit((unsigned char)*s))
1188 /** all digit number */
1189 static int isalldigit(const char* str, size_t l)
1193 if(!isdigit((unsigned char)str[i]))
1199 cfg_parse_memsize(const char* str, size_t* res)
1203 if(!str || (len=(size_t)strlen(str)) == 0) {
1204 log_err("not a size: '%s'", str);
1207 if(isalldigit(str, len)) {
1208 *res = (size_t)atol(str);
1211 /* check appended num */
1212 while(len>0 && str[len-1]==' ')
1214 if(len > 1 && str[len-1] == 'b')
1216 else if(len > 1 && str[len-1] == 'B')
1219 if(len > 1 && tolower((unsigned char)str[len-1]) == 'g')
1220 mult = 1024*1024*1024;
1221 else if(len > 1 && tolower((unsigned char)str[len-1]) == 'm')
1223 else if(len > 1 && tolower((unsigned char)str[len-1]) == 'k')
1225 else if(len > 0 && isdigit((unsigned char)str[len-1]))
1228 log_err("unknown size specifier: '%s'", str);
1231 while(len>1 && str[len-2]==' ')
1234 if(!isalldigit(str, len-1)) {
1235 log_err("unknown size specifier: '%s'", str);
1238 *res = ((size_t)atol(str)) * mult;
1243 config_apply(struct config_file* config)
1245 MAX_TTL = (time_t)config->max_ttl;
1246 MIN_TTL = (time_t)config->min_ttl;
1247 MAX_NEG_TTL = (time_t)config->max_negative_ttl;
1248 RTT_MIN_TIMEOUT = config->infra_cache_min_rtt;
1249 EDNS_ADVERTISED_SIZE = (uint16_t)config->edns_buffer_size;
1250 MINIMAL_RESPONSES = config->minimal_responses;
1251 RRSET_ROUNDROBIN = config->rrset_roundrobin;
1252 log_set_time_asc(config->log_time_ascii);
1253 autr_permit_small_holddown = config->permit_small_holddown;
1256 void config_lookup_uid(struct config_file* cfg)
1258 #ifdef HAVE_GETPWNAM
1259 /* translate username into uid and gid */
1260 if(cfg->username && cfg->username[0]) {
1262 if((pwd = getpwnam(cfg->username)) != NULL) {
1263 cfg_uid = pwd->pw_uid;
1264 cfg_gid = pwd->pw_gid;
1273 * Calculate string length of full pathname in original filesys
1274 * @param fname: the path name to convert.
1275 * Must not be null or empty.
1276 * @param cfg: config struct for chroot and chdir (if set).
1277 * @param use_chdir: if false, only chroot is applied.
1278 * @return length of string.
1279 * remember to allocate one more for 0 at end in mallocs.
1282 strlen_after_chroot(const char* fname, struct config_file* cfg, int use_chdir)
1286 if(cfg->chrootdir && cfg->chrootdir[0] &&
1287 strncmp(cfg->chrootdir, fname, strlen(cfg->chrootdir)) == 0) {
1288 /* already full pathname, return it */
1289 return strlen(fname);
1292 if(cfg->chrootdir && cfg->chrootdir[0]) {
1293 /* start with chrootdir */
1294 len += strlen(cfg->chrootdir);
1298 #ifdef UB_ON_WINDOWS
1299 if(fname[0] != 0 && fname[1] == ':') {
1300 /* full path, no chdir */
1303 if(fname[0] == '/' || !use_chdir) {
1304 /* full path, no chdir */
1305 } else if(cfg->directory && cfg->directory[0]) {
1307 if(slashit && cfg->directory[0] != '/')
1309 if(cfg->chrootdir && cfg->chrootdir[0] &&
1310 strncmp(cfg->chrootdir, cfg->directory,
1311 strlen(cfg->chrootdir)) == 0)
1312 len += strlen(cfg->directory)-strlen(cfg->chrootdir);
1313 else len += strlen(cfg->directory);
1317 if(slashit && fname[0] != '/')
1319 len += strlen(fname);
1324 fname_after_chroot(const char* fname, struct config_file* cfg, int use_chdir)
1326 size_t len = strlen_after_chroot(fname, cfg, use_chdir)+1;
1328 char* buf = (char*)malloc(len);
1332 /* is fname already in chroot ? */
1333 if(cfg->chrootdir && cfg->chrootdir[0] &&
1334 strncmp(cfg->chrootdir, fname, strlen(cfg->chrootdir)) == 0) {
1335 /* already full pathname, return it */
1336 (void)strlcpy(buf, fname, len);
1341 if(cfg->chrootdir && cfg->chrootdir[0]) {
1342 /* start with chrootdir */
1343 (void)strlcpy(buf, cfg->chrootdir, len);
1346 #ifdef UB_ON_WINDOWS
1347 if(fname[0] != 0 && fname[1] == ':') {
1348 /* full path, no chdir */
1352 if(fname[0] == '/' || !use_chdir) {
1353 /* full path, no chdir */
1354 } else if(cfg->directory && cfg->directory[0]) {
1356 if(slashit && cfg->directory[0] != '/')
1357 (void)strlcat(buf, "/", len);
1358 /* is the directory already in the chroot? */
1359 if(cfg->chrootdir && cfg->chrootdir[0] &&
1360 strncmp(cfg->chrootdir, cfg->directory,
1361 strlen(cfg->chrootdir)) == 0)
1362 (void)strlcat(buf, cfg->directory+strlen(cfg->chrootdir),
1364 else (void)strlcat(buf, cfg->directory, len);
1368 if(slashit && fname[0] != '/')
1369 (void)strlcat(buf, "/", len);
1370 (void)strlcat(buf, fname, len);
1375 /** return next space character in string */
1376 static char* next_space_pos(const char* str)
1378 char* sp = strchr(str, ' ');
1379 char* tab = strchr(str, '\t');
1384 return (sp<tab)?sp:tab;
1387 /** return last space character in string */
1388 static char* last_space_pos(const char* str)
1390 char* sp = strrchr(str, ' ');
1391 char* tab = strrchr(str, '\t');
1396 return (sp>tab)?sp:tab;
1400 cfg_parse_local_zone(struct config_file* cfg, const char* val)
1402 const char *type, *name_end, *name;
1405 /* parse it as: [zone_name] [between stuff] [zone_type] */
1407 while(*name && isspace((unsigned char)*name))
1410 log_err("syntax error: too short: %s", val);
1413 name_end = next_space_pos(name);
1414 if(!name_end || !*name_end) {
1415 log_err("syntax error: expected zone type: %s", val);
1418 if (name_end - name > 255) {
1419 log_err("syntax error: bad zone name: %s", val);
1422 (void)strlcpy(buf, name, sizeof(buf));
1423 buf[name_end-name] = '\0';
1425 type = last_space_pos(name_end);
1426 while(type && *type && isspace((unsigned char)*type))
1428 if(!type || !*type) {
1429 log_err("syntax error: expected zone type: %s", val);
1433 if(strcmp(type, "nodefault")==0) {
1434 return cfg_strlist_insert(&cfg->local_zones_nodefault,
1437 return cfg_str2list_insert(&cfg->local_zones, strdup(buf),
1442 char* cfg_ptr_reverse(char* str)
1448 struct sockaddr_storage addr;
1451 /* parse it as: [IP] [between stuff] [name] */
1453 while(*ip && isspace((unsigned char)*ip))
1456 log_err("syntax error: too short: %s", str);
1459 ip_end = next_space_pos(ip);
1460 if(!ip_end || !*ip_end) {
1461 log_err("syntax error: expected name: %s", str);
1465 name = last_space_pos(ip_end);
1466 if(!name || !*name) {
1467 log_err("syntax error: expected name: %s", str);
1471 sscanf(ip, "%100s", buf);
1472 buf[sizeof(buf)-1]=0;
1474 if(!ipstrtoaddr(buf, UNBOUND_DNS_PORT, &addr, &addrlen)) {
1475 log_err("syntax error: cannot parse address: %s", str);
1480 * ddd.ddd.ddd.ddd.in-addr-arpa.
1481 * IPv6: (h.){32}.ip6.arpa. */
1483 if(addr_is_ip6(&addr, addrlen)) {
1485 const char* hex = "0123456789abcdef";
1488 memmove(ad, &((struct sockaddr_in6*)&addr)->sin6_addr,
1490 for(i=15; i>=0; i--) {
1492 *p++ = hex[ (b&0x0f) ];
1494 *p++ = hex[ (b&0xf0) >> 4 ];
1497 snprintf(buf+16*4, sizeof(buf)-16*4, "ip6.arpa. ");
1500 memmove(ad, &((struct sockaddr_in*)&addr)->sin_addr,
1502 snprintf(buf, sizeof(buf), "%u.%u.%u.%u.in-addr.arpa. ",
1503 (unsigned)ad[3], (unsigned)ad[2],
1504 (unsigned)ad[1], (unsigned)ad[0]);
1507 /* printed the reverse address, now the between goop and name on end */
1508 while(*ip_end && isspace((unsigned char)*ip_end))
1511 snprintf(buf+strlen(buf), sizeof(buf)-strlen(buf), "%.*s",
1512 (int)(name-ip_end), ip_end);
1514 snprintf(buf+strlen(buf), sizeof(buf)-strlen(buf), " PTR %s", name);
1516 result = strdup(buf);
1518 log_err("out of memory parsing %s", str);
1524 #ifdef UB_ON_WINDOWS
1526 w_lookup_reg_str(const char* key, const char* name)
1531 DWORD len = (DWORD)sizeof(buf);
1533 char* result = NULL;
1534 ret = RegOpenKeyEx(HKEY_LOCAL_MACHINE, key, 0, KEY_READ, &hk);
1535 if(ret == ERROR_FILE_NOT_FOUND)
1536 return NULL; /* key does not exist */
1537 else if(ret != ERROR_SUCCESS) {
1538 log_err("RegOpenKeyEx failed");
1541 ret = RegQueryValueEx(hk, (LPCTSTR)name, 0, &type, buf, &len);
1543 log_err("RegCloseKey");
1544 if(ret == ERROR_FILE_NOT_FOUND)
1545 return NULL; /* name does not exist */
1546 else if(ret != ERROR_SUCCESS) {
1547 log_err("RegQueryValueEx failed");
1550 if(type == REG_SZ || type == REG_MULTI_SZ || type == REG_EXPAND_SZ) {
1551 buf[sizeof(buf)-1] = 0;
1552 buf[sizeof(buf)-2] = 0; /* for multi_sz */
1553 result = strdup((char*)buf);
1554 if(!result) log_err("out of memory");
1558 #endif /* UB_ON_WINDOWS */
1560 void errinf(struct module_qstate* qstate, const char* str)
1562 struct config_strlist* p;
1563 if(qstate->env->cfg->val_log_level < 2 || !str)
1565 p = (struct config_strlist*)regional_alloc(qstate->region, sizeof(*p));
1567 log_err("malloc failure in validator-error-info string");
1571 p->str = regional_strdup(qstate->region, str);
1573 log_err("malloc failure in validator-error-info string");
1577 if(qstate->errinf) {
1578 struct config_strlist* q = qstate->errinf;
1582 } else qstate->errinf = p;
1585 void errinf_origin(struct module_qstate* qstate, struct sock_list *origin)
1587 struct sock_list* p;
1588 if(qstate->env->cfg->val_log_level < 2)
1590 for(p=origin; p; p=p->next) {
1593 snprintf(buf, sizeof(buf), "from ");
1594 else snprintf(buf, sizeof(buf), "and ");
1596 snprintf(buf+strlen(buf), sizeof(buf)-strlen(buf),
1599 addr_to_str(&p->addr, p->len, buf+strlen(buf),
1600 sizeof(buf)-strlen(buf));
1601 errinf(qstate, buf);
1605 char* errinf_to_str(struct module_qstate* qstate)
1609 size_t left = sizeof(buf);
1610 struct config_strlist* s;
1611 char dname[LDNS_MAX_DOMAINLEN+1];
1613 sldns_wire2str_type_buf(qstate->qinfo.qtype, t, sizeof(t));
1614 sldns_wire2str_class_buf(qstate->qinfo.qclass, c, sizeof(c));
1615 dname_str(qstate->qinfo.qname, dname);
1616 snprintf(p, left, "validation failure <%s %s %s>:", dname, t, c);
1617 left -= strlen(p); p += strlen(p);
1619 snprintf(p, left, " misc failure");
1620 else for(s=qstate->errinf; s; s=s->next) {
1621 snprintf(p, left, " %s", s->str);
1622 left -= strlen(p); p += strlen(p);
1626 log_err("malloc failure in errinf_to_str");
1630 void errinf_rrset(struct module_qstate* qstate, struct ub_packed_rrset_key *rr)
1633 char dname[LDNS_MAX_DOMAINLEN+1];
1635 if(qstate->env->cfg->val_log_level < 2 || !rr)
1637 sldns_wire2str_type_buf(ntohs(rr->rk.type), t, sizeof(t));
1638 sldns_wire2str_class_buf(ntohs(rr->rk.rrset_class), c, sizeof(c));
1639 dname_str(rr->rk.dname, dname);
1640 snprintf(buf, sizeof(buf), "for <%s %s %s>", dname, t, c);
1641 errinf(qstate, buf);
1644 void errinf_dname(struct module_qstate* qstate, const char* str, uint8_t* dname)
1647 char buf[LDNS_MAX_DOMAINLEN+1];
1648 if(qstate->env->cfg->val_log_level < 2 || !str || !dname)
1650 dname_str(dname, buf);
1651 snprintf(b, sizeof(b), "%s %s", str, buf);