1 /*
2 * util/config_file.c - 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 #include "config.h"
43 #include <ctype.h>
44 #include <stdarg.h>
45 #ifdef HAVE_TIME_H
46 #include <time.h>
47 #endif
48 #include "util/log.h"
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"
58 #include "util/rtt.h"
59 #include "services/cache/infra.h"
60 #include "sldns/wire2str.h"
61 #include "sldns/parseutil.h"
62 #ifdef HAVE_GLOB_H
63 # include <glob.h>
64 #endif
65 #ifdef HAVE_PWD_H
66 #include <pwd.h>
67 #endif
68
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;
75
76 /** global config during parsing */
77 struct config_parser_state* cfg_parser = 0;
78
79 /** init ports possible for use */
80 static void init_outgoing_availports(int* array, int num);
81
82 struct config_file*
config_create(void)83 config_create(void)
84 {
85 struct config_file* cfg;
86 cfg = (struct config_file*)calloc(1, sizeof(struct config_file));
87 if(!cfg)
88 return NULL;
89 /* the defaults if no config is present */
90 cfg->verbosity = 1;
91 cfg->stat_interval = 0;
92 cfg->stat_cumulative = 0;
93 cfg->stat_extended = 0;
94 cfg->num_threads = 1;
95 cfg->port = UNBOUND_DNS_PORT;
96 cfg->do_ip4 = 1;
97 cfg->do_ip6 = 1;
98 cfg->do_udp = 1;
99 cfg->do_tcp = 1;
100 cfg->tcp_upstream = 0;
101 cfg->ssl_service_key = NULL;
102 cfg->ssl_service_pem = NULL;
103 cfg->ssl_port = 853;
104 cfg->ssl_upstream = 0;
105 cfg->use_syslog = 1;
106 cfg->log_time_ascii = 0;
107 cfg->log_queries = 0;
108 #ifndef USE_WINSOCK
109 # ifdef USE_MINI_EVENT
110 /* select max 1024 sockets */
111 cfg->outgoing_num_ports = 960;
112 cfg->num_queries_per_thread = 512;
113 # else
114 /* libevent can use many sockets */
115 cfg->outgoing_num_ports = 4096;
116 cfg->num_queries_per_thread = 1024;
117 # endif
118 cfg->outgoing_num_tcp = 10;
119 cfg->incoming_num_tcp = 10;
120 #else
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;
125 #endif
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;
133 cfg->host_ttl = 900;
134 cfg->bogus_ttl = 60;
135 cfg->min_ttl = 0;
136 cfg->max_ttl = 3600 * 24;
137 cfg->max_negative_ttl = 3600;
138 cfg->prefetch = 0;
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))))
145 goto error_exit;
146 init_outgoing_availports(cfg->outgoing_avail_ports, 65536);
147 if(!(cfg->username = strdup(UB_USERNAME))) goto error_exit;
148 #ifdef HAVE_CHROOT
149 if(!(cfg->chrootdir = strdup(CHROOT_DIR))) goto error_exit;
150 #endif
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;
160 cfg->so_rcvbuf = 0;
161 cfg->so_sndbuf = 0;
162 cfg->so_reuseport = 0;
163 cfg->ip_transparent = 0;
164 cfg->num_ifs = 0;
165 cfg->ifs = NULL;
166 cfg->num_out_ifs = 0;
167 cfg->out_ifs = NULL;
168 cfg->stubs = NULL;
169 cfg->forwards = NULL;
170 cfg->acls = 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;
186 cfg->version = 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;
201 cfg->ignore_cd = 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")))
222 goto error_exit;
223 if(!(cfg->server_cert_file = strdup(RUN_DIR"/unbound_server.pem")))
224 goto error_exit;
225 if(!(cfg->control_key_file = strdup(RUN_DIR"/unbound_control.key")))
226 goto error_exit;
227 if(!(cfg->control_cert_file = strdup(RUN_DIR"/unbound_control.pem")))
228 goto error_exit;
229
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)))
235 goto error_exit;
236 #endif
237 cfg->ratelimit = 0;
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;
243 cfg->qname_minimisation = 0;
244 return cfg;
245 error_exit:
246 config_delete(cfg);
247 return NULL;
248 }
249
config_create_forlib(void)250 struct config_file* config_create_forlib(void)
251 {
252 struct config_file* cfg = config_create();
253 if(!cfg) return NULL;
254 /* modifications for library use, less verbose, less memory */
255 free(cfg->chrootdir);
256 cfg->chrootdir = NULL;
257 cfg->verbosity = 0;
258 cfg->outgoing_num_ports = 16; /* in library use, this is 'reasonable'
259 and probably within the ulimit(maxfds) of the user */
260 cfg->outgoing_num_tcp = 2;
261 cfg->msg_cache_size = 1024*1024;
262 cfg->msg_cache_slabs = 1;
263 cfg->rrset_cache_size = 1024*1024;
264 cfg->rrset_cache_slabs = 1;
265 cfg->infra_cache_slabs = 1;
266 cfg->use_syslog = 0;
267 cfg->key_cache_size = 1024*1024;
268 cfg->key_cache_slabs = 1;
269 cfg->neg_cache_size = 100 * 1024;
270 cfg->donotquery_localhost = 0; /* allow, so that you can ask a
271 forward nameserver running on localhost */
272 cfg->val_log_level = 2; /* to fill why_bogus with */
273 cfg->val_log_squelch = 1;
274 return cfg;
275 }
276
277 /** check that the value passed is >= 0 */
278 #define IS_NUMBER_OR_ZERO \
279 if(atoi(val) == 0 && strcmp(val, "0") != 0) return 0
280 /** check that the value passed is > 0 */
281 #define IS_NONZERO_NUMBER \
282 if(atoi(val) == 0) return 0
283 /** check that the value passed is not 0 and a power of 2 */
284 #define IS_POW2_NUMBER \
285 if(atoi(val) == 0 || !is_pow2((size_t)atoi(val))) return 0
286 /** check that the value passed is yes or no */
287 #define IS_YES_OR_NO \
288 if(strcmp(val, "yes") != 0 && strcmp(val, "no") != 0) return 0
289 /** put integer_or_zero into variable */
290 #define S_NUMBER_OR_ZERO(str, var) if(strcmp(opt, str) == 0) \
291 { IS_NUMBER_OR_ZERO; cfg->var = atoi(val); }
292 /** put integer_nonzero into variable */
293 #define S_NUMBER_NONZERO(str, var) if(strcmp(opt, str) == 0) \
294 { IS_NONZERO_NUMBER; cfg->var = atoi(val); }
295 /** put integer_or_zero into unsigned */
296 #define S_UNSIGNED_OR_ZERO(str, var) if(strcmp(opt, str) == 0) \
297 { IS_NUMBER_OR_ZERO; cfg->var = (unsigned)atoi(val); }
298 /** put integer_or_zero into size_t */
299 #define S_SIZET_OR_ZERO(str, var) if(strcmp(opt, str) == 0) \
300 { IS_NUMBER_OR_ZERO; cfg->var = (size_t)atoi(val); }
301 /** put integer_nonzero into size_t */
302 #define S_SIZET_NONZERO(str, var) if(strcmp(opt, str) == 0) \
303 { IS_NONZERO_NUMBER; cfg->var = (size_t)atoi(val); }
304 /** put yesno into variable */
305 #define S_YNO(str, var) if(strcmp(opt, str) == 0) \
306 { IS_YES_OR_NO; cfg->var = (strcmp(val, "yes") == 0); }
307 /** put memsize into variable */
308 #define S_MEMSIZE(str, var) if(strcmp(opt, str)==0) \
309 { return cfg_parse_memsize(val, &cfg->var); }
310 /** put pow2 number into variable */
311 #define S_POW2(str, var) if(strcmp(opt, str)==0) \
312 { IS_POW2_NUMBER; cfg->var = (size_t)atoi(val); }
313 /** put string into variable */
314 #define S_STR(str, var) if(strcmp(opt, str)==0) \
315 { free(cfg->var); return (cfg->var = strdup(val)) != NULL; }
316 /** put string into strlist */
317 #define S_STRLIST(str, var) if(strcmp(opt, str)==0) \
318 { return cfg_strlist_insert(&cfg->var, strdup(val)); }
319
config_set_option(struct config_file * cfg,const char * opt,const char * val)320 int config_set_option(struct config_file* cfg, const char* opt,
321 const char* val)
322 {
323 S_NUMBER_OR_ZERO("verbosity:", verbosity)
324 else if(strcmp(opt, "statistics-interval:") == 0) {
325 if(strcmp(val, "0") == 0 || strcmp(val, "") == 0)
326 cfg->stat_interval = 0;
327 else if(atoi(val) == 0)
328 return 0;
329 else cfg->stat_interval = atoi(val);
330 } else if(strcmp(opt, "num_threads:") == 0) {
331 /* not supported, library must have 1 thread in bgworker */
332 return 0;
333 } else if(strcmp(opt, "outgoing-port-permit:") == 0) {
334 return cfg_mark_ports(val, 1,
335 cfg->outgoing_avail_ports, 65536);
336 } else if(strcmp(opt, "outgoing-port-avoid:") == 0) {
337 return cfg_mark_ports(val, 0,
338 cfg->outgoing_avail_ports, 65536);
339 } else if(strcmp(opt, "local-zone:") == 0) {
340 return cfg_parse_local_zone(cfg, val);
341 } else if(strcmp(opt, "val-override-date:") == 0) {
342 if(strcmp(val, "") == 0 || strcmp(val, "0") == 0) {
343 cfg->val_date_override = 0;
344 } else if(strlen(val) == 14) {
345 cfg->val_date_override = cfg_convert_timeval(val);
346 return cfg->val_date_override != 0;
347 } else {
348 if(atoi(val) == 0) return 0;
349 cfg->val_date_override = (uint32_t)atoi(val);
350 }
351 } else if(strcmp(opt, "local-data-ptr:") == 0) {
352 char* ptr = cfg_ptr_reverse((char*)opt);
353 return cfg_strlist_insert(&cfg->local_data, ptr);
354 } else if(strcmp(opt, "logfile:") == 0) {
355 cfg->use_syslog = 0;
356 free(cfg->logfile);
357 return (cfg->logfile = strdup(val)) != NULL;
358 }
359 else if(strcmp(opt, "log-time-ascii:") == 0)
360 { IS_YES_OR_NO; cfg->log_time_ascii = (strcmp(val, "yes") == 0);
361 log_set_time_asc(cfg->log_time_ascii); }
362 else S_SIZET_NONZERO("max-udp-size:", max_udp_size)
363 else S_YNO("use-syslog:", use_syslog)
364 else S_YNO("extended-statistics:", stat_extended)
365 else S_YNO("statistics-cumulative:", stat_cumulative)
366 else S_YNO("do-ip4:", do_ip4)
367 else S_YNO("do-ip6:", do_ip6)
368 else S_YNO("do-udp:", do_udp)
369 else S_YNO("do-tcp:", do_tcp)
370 else S_YNO("tcp-upstream:", tcp_upstream)
371 else S_YNO("ssl-upstream:", ssl_upstream)
372 else S_STR("ssl-service-key:", ssl_service_key)
373 else S_STR("ssl-service-pem:", ssl_service_pem)
374 else S_NUMBER_NONZERO("ssl-port:", ssl_port)
375 else S_YNO("interface-automatic:", if_automatic)
376 else S_YNO("do-daemonize:", do_daemonize)
377 else S_NUMBER_NONZERO("port:", port)
378 else S_NUMBER_NONZERO("outgoing-range:", outgoing_num_ports)
379 else S_SIZET_OR_ZERO("outgoing-num-tcp:", outgoing_num_tcp)
380 else S_SIZET_OR_ZERO("incoming-num-tcp:", incoming_num_tcp)
381 else S_SIZET_NONZERO("edns-buffer-size:", edns_buffer_size)
382 else S_SIZET_NONZERO("msg-buffer-size:", msg_buffer_size)
383 else S_MEMSIZE("msg-cache-size:", msg_cache_size)
384 else S_POW2("msg-cache-slabs:", msg_cache_slabs)
385 else S_SIZET_NONZERO("num-queries-per-thread:",num_queries_per_thread)
386 else S_SIZET_OR_ZERO("jostle-timeout:", jostle_time)
387 else S_MEMSIZE("so-rcvbuf:", so_rcvbuf)
388 else S_MEMSIZE("so-sndbuf:", so_sndbuf)
389 else S_YNO("so-reuseport:", so_reuseport)
390 else S_YNO("ip-transparent:", ip_transparent)
391 else S_MEMSIZE("rrset-cache-size:", rrset_cache_size)
392 else S_POW2("rrset-cache-slabs:", rrset_cache_slabs)
393 else S_YNO("prefetch:", prefetch)
394 else S_YNO("prefetch-key:", prefetch_key)
395 else if(strcmp(opt, "cache-max-ttl:") == 0)
396 { IS_NUMBER_OR_ZERO; cfg->max_ttl = atoi(val); MAX_TTL=(time_t)cfg->max_ttl;}
397 else if(strcmp(opt, "cache-max-negative-ttl:") == 0)
398 { IS_NUMBER_OR_ZERO; cfg->max_negative_ttl = atoi(val); MAX_NEG_TTL=(time_t)cfg->max_negative_ttl;}
399 else if(strcmp(opt, "cache-min-ttl:") == 0)
400 { IS_NUMBER_OR_ZERO; cfg->min_ttl = atoi(val); MIN_TTL=(time_t)cfg->min_ttl;}
401 else if(strcmp(opt, "infra-cache-min-rtt:") == 0) {
402 IS_NUMBER_OR_ZERO; cfg->infra_cache_min_rtt = atoi(val);
403 RTT_MIN_TIMEOUT=cfg->infra_cache_min_rtt;
404 }
405 else S_NUMBER_OR_ZERO("infra-host-ttl:", host_ttl)
406 else S_POW2("infra-cache-slabs:", infra_cache_slabs)
407 else S_SIZET_NONZERO("infra-cache-numhosts:", infra_cache_numhosts)
408 else S_NUMBER_OR_ZERO("delay-close:", delay_close)
409 else S_STR("chroot:", chrootdir)
410 else S_STR("username:", username)
411 else S_STR("directory:", directory)
412 else S_STR("pidfile:", pidfile)
413 else S_YNO("hide-identity:", hide_identity)
414 else S_YNO("hide-version:", hide_version)
415 else S_STR("identity:", identity)
416 else S_STR("version:", version)
417 else S_STRLIST("root-hints:", root_hints)
418 else S_STR("target-fetch-policy:", target_fetch_policy)
419 else S_YNO("harden-glue:", harden_glue)
420 else S_YNO("harden-short-bufsize:", harden_short_bufsize)
421 else S_YNO("harden-large-queries:", harden_large_queries)
422 else S_YNO("harden-dnssec-stripped:", harden_dnssec_stripped)
423 else S_YNO("harden-below-nxdomain:", harden_below_nxdomain)
424 else S_YNO("harden-referral-path:", harden_referral_path)
425 else S_YNO("harden-algo-downgrade:", harden_algo_downgrade)
426 else S_YNO("use-caps-for-id", use_caps_bits_for_id)
427 else S_STRLIST("caps-whitelist:", caps_whitelist)
428 else S_SIZET_OR_ZERO("unwanted-reply-threshold:", unwanted_threshold)
429 else S_STRLIST("private-address:", private_address)
430 else S_STRLIST("private-domain:", private_domain)
431 else S_YNO("do-not-query-localhost:", donotquery_localhost)
432 else S_STRLIST("do-not-query-address:", donotqueryaddrs)
433 else S_STRLIST("auto-trust-anchor-file:", auto_trust_anchor_file_list)
434 else S_STRLIST("trust-anchor-file:", trust_anchor_file_list)
435 else S_STRLIST("trust-anchor:", trust_anchor_list)
436 else S_STRLIST("trusted-keys-file:", trusted_keys_file_list)
437 else S_STR("dlv-anchor-file:", dlv_anchor_file)
438 else S_STRLIST("dlv-anchor:", dlv_anchor_list)
439 else S_STRLIST("domain-insecure:", domain_insecure)
440 else S_NUMBER_OR_ZERO("val-bogus-ttl:", bogus_ttl)
441 else S_YNO("val-clean-additional:", val_clean_additional)
442 else S_NUMBER_OR_ZERO("val-log-level:", val_log_level)
443 else S_YNO("val-log-squelch:", val_log_squelch)
444 else S_YNO("log-queries:", log_queries)
445 else S_YNO("val-permissive-mode:", val_permissive_mode)
446 else S_YNO("ignore-cd-flag:", ignore_cd)
447 else S_STR("val-nsec3-keysize-iterations:", val_nsec3_key_iterations)
448 else S_UNSIGNED_OR_ZERO("add-holddown:", add_holddown)
449 else S_UNSIGNED_OR_ZERO("del-holddown:", del_holddown)
450 else S_UNSIGNED_OR_ZERO("keep-missing:", keep_missing)
451 else if(strcmp(opt, "permit-small-holddown:") == 0)
452 { IS_YES_OR_NO; cfg->permit_small_holddown = (strcmp(val, "yes") == 0);
453 autr_permit_small_holddown = cfg->permit_small_holddown; }
454 else S_MEMSIZE("key-cache-size:", key_cache_size)
455 else S_POW2("key-cache-slabs:", key_cache_slabs)
456 else S_MEMSIZE("neg-cache-size:", neg_cache_size)
457 else S_YNO("minimal-responses:", minimal_responses)
458 else S_YNO("rrset-roundrobin:", rrset_roundrobin)
459 else S_STRLIST("local-data:", local_data)
460 else S_YNO("unblock-lan-zones:", unblock_lan_zones)
461 else S_YNO("control-enable:", remote_control_enable)
462 else S_STRLIST("control-interface:", control_ifs)
463 else S_NUMBER_NONZERO("control-port:", control_port)
464 else S_STR("server-key-file:", server_key_file)
465 else S_STR("server-cert-file:", server_cert_file)
466 else S_STR("control-key-file:", control_key_file)
467 else S_STR("control-cert-file:", control_cert_file)
468 else S_STR("module-config:", module_conf)
469 else S_STR("python-script:", python_script)
470 else if(strcmp(opt, "ratelimit:") == 0) {
471 IS_NUMBER_OR_ZERO; cfg->ratelimit = atoi(val);
472 infra_dp_ratelimit=cfg->ratelimit;
473 }
474 else S_MEMSIZE("ratelimit-size:", ratelimit_size)
475 else S_POW2("ratelimit-slabs:", ratelimit_slabs)
476 else S_NUMBER_OR_ZERO("ratelimit-factor:", ratelimit_factor)
477 else S_YNO("qname-minimisation:", qname_minimisation)
478 /* val_sig_skew_min and max are copied into val_env during init,
479 * so this does not update val_env with set_option */
480 else if(strcmp(opt, "val-sig-skew-min:") == 0)
481 { IS_NUMBER_OR_ZERO; cfg->val_sig_skew_min = (int32_t)atoi(val); }
482 else if(strcmp(opt, "val-sig-skew-max:") == 0)
483 { IS_NUMBER_OR_ZERO; cfg->val_sig_skew_max = (int32_t)atoi(val); }
484 else if (strcmp(opt, "outgoing-interface:") == 0) {
485 char* d = strdup(val);
486 char** oi =
487 (char**)reallocarray(NULL, (size_t)cfg->num_out_ifs+1, sizeof(char*));
488 if(!d || !oi) { free(d); free(oi); return -1; }
489 if(cfg->out_ifs && cfg->num_out_ifs) {
490 memmove(oi, cfg->out_ifs, cfg->num_out_ifs*sizeof(char*));
491 free(cfg->out_ifs);
492 }
493 oi[cfg->num_out_ifs++] = d;
494 cfg->out_ifs = oi;
495 } else {
496 /* unknown or unsupported (from the set_option interface):
497 * interface, outgoing-interface, access-control,
498 * stub-zone, name, stub-addr, stub-host, stub-prime
499 * forward-first, stub-first,
500 * forward-zone, name, forward-addr, forward-host,
501 * ratelimit-for-domain, ratelimit-below-domain */
502 return 0;
503 }
504 return 1;
505 }
506
config_print_func(char * line,void * arg)507 void config_print_func(char* line, void* arg)
508 {
509 FILE* f = (FILE*)arg;
510 (void)fprintf(f, "%s\n", line);
511 }
512
513 /** collate func arg */
514 struct config_collate_arg {
515 /** list of result items */
516 struct config_strlist_head list;
517 /** if a malloc error occurred, 0 is OK */
518 int status;
519 };
520
config_collate_func(char * line,void * arg)521 void config_collate_func(char* line, void* arg)
522 {
523 struct config_collate_arg* m = (struct config_collate_arg*)arg;
524 if(m->status)
525 return;
526 if(!cfg_strlist_append(&m->list, strdup(line)))
527 m->status = 1;
528 }
529
config_get_option_list(struct config_file * cfg,const char * opt,struct config_strlist ** list)530 int config_get_option_list(struct config_file* cfg, const char* opt,
531 struct config_strlist** list)
532 {
533 struct config_collate_arg m;
534 memset(&m, 0, sizeof(m));
535 *list = NULL;
536 if(!config_get_option(cfg, opt, config_collate_func, &m))
537 return 1;
538 if(m.status) {
539 config_delstrlist(m.list.first);
540 return 2;
541 }
542 *list = m.list.first;
543 return 0;
544 }
545
546 int
config_get_option_collate(struct config_file * cfg,const char * opt,char ** str)547 config_get_option_collate(struct config_file* cfg, const char* opt, char** str)
548 {
549 struct config_strlist* list = NULL;
550 int r;
551 *str = NULL;
552 if((r = config_get_option_list(cfg, opt, &list)) != 0)
553 return r;
554 *str = config_collate_cat(list);
555 config_delstrlist(list);
556 if(!*str) return 2;
557 return 0;
558 }
559
560 char*
config_collate_cat(struct config_strlist * list)561 config_collate_cat(struct config_strlist* list)
562 {
563 size_t total = 0, left;
564 struct config_strlist* s;
565 char *r, *w;
566 if(!list) /* no elements */
567 return strdup("");
568 if(list->next == NULL) /* one element , no newline at end. */
569 return strdup(list->str);
570 /* count total length */
571 for(s=list; s; s=s->next)
572 total += strlen(s->str) + 1; /* len + newline */
573 left = total+1; /* one extra for nul at end */
574 r = malloc(left);
575 if(!r)
576 return NULL;
577 w = r;
578 for(s=list; s; s=s->next) {
579 size_t this = strlen(s->str);
580 if(this+2 > left) { /* sanity check */
581 free(r);
582 return NULL;
583 }
584 snprintf(w, left, "%s\n", s->str);
585 this = strlen(w);
586 w += this;
587 left -= this;
588 }
589 return r;
590 }
591
592 /** compare and print decimal option */
593 #define O_DEC(opt, str, var) if(strcmp(opt, str)==0) \
594 {snprintf(buf, len, "%d", (int)cfg->var); \
595 func(buf, arg);}
596 /** compare and print unsigned option */
597 #define O_UNS(opt, str, var) if(strcmp(opt, str)==0) \
598 {snprintf(buf, len, "%u", (unsigned)cfg->var); \
599 func(buf, arg);}
600 /** compare and print yesno option */
601 #define O_YNO(opt, str, var) if(strcmp(opt, str)==0) \
602 {func(cfg->var?"yes":"no", arg);}
603 /** compare and print string option */
604 #define O_STR(opt, str, var) if(strcmp(opt, str)==0) \
605 {func(cfg->var?cfg->var:"", arg);}
606 /** compare and print array option */
607 #define O_IFC(opt, str, num, arr) if(strcmp(opt, str)==0) \
608 {int i; for(i=0; i<cfg->num; i++) func(cfg->arr[i], arg);}
609 /** compare and print memorysize option */
610 #define O_MEM(opt, str, var) if(strcmp(opt, str)==0) { \
611 if(cfg->var > 1024*1024*1024) { \
612 size_t f=cfg->var/(size_t)1000000, b=cfg->var%(size_t)1000000; \
613 snprintf(buf, len, "%u%6.6u", (unsigned)f, (unsigned)b); \
614 } else snprintf(buf, len, "%u", (unsigned)cfg->var); \
615 func(buf, arg);}
616 /** compare and print list option */
617 #define O_LST(opt, name, lst) if(strcmp(opt, name)==0) { \
618 struct config_strlist* p = cfg->lst; \
619 for(p = cfg->lst; p; p = p->next) \
620 func(p->str, arg); \
621 }
622 /** compare and print list option */
623 #define O_LS2(opt, name, lst) if(strcmp(opt, name)==0) { \
624 struct config_str2list* p = cfg->lst; \
625 for(p = cfg->lst; p; p = p->next) \
626 snprintf(buf, len, "%s %s\n", p->str, p->str2); \
627 func(buf, arg); \
628 }
629
630 int
config_get_option(struct config_file * cfg,const char * opt,void (* func)(char *,void *),void * arg)631 config_get_option(struct config_file* cfg, const char* opt,
632 void (*func)(char*,void*), void* arg)
633 {
634 char buf[1024];
635 size_t len = sizeof(buf);
636 fptr_ok(fptr_whitelist_print_func(func));
637 O_DEC(opt, "verbosity", verbosity)
638 else O_DEC(opt, "statistics-interval", stat_interval)
639 else O_YNO(opt, "statistics-cumulative", stat_cumulative)
640 else O_YNO(opt, "extended-statistics", stat_extended)
641 else O_YNO(opt, "use-syslog", use_syslog)
642 else O_YNO(opt, "log-time-ascii", log_time_ascii)
643 else O_DEC(opt, "num-threads", num_threads)
644 else O_IFC(opt, "interface", num_ifs, ifs)
645 else O_IFC(opt, "outgoing-interface", num_out_ifs, out_ifs)
646 else O_YNO(opt, "interface-automatic", if_automatic)
647 else O_DEC(opt, "port", port)
648 else O_DEC(opt, "outgoing-range", outgoing_num_ports)
649 else O_DEC(opt, "outgoing-num-tcp", outgoing_num_tcp)
650 else O_DEC(opt, "incoming-num-tcp", incoming_num_tcp)
651 else O_DEC(opt, "edns-buffer-size", edns_buffer_size)
652 else O_DEC(opt, "msg-buffer-size", msg_buffer_size)
653 else O_MEM(opt, "msg-cache-size", msg_cache_size)
654 else O_DEC(opt, "msg-cache-slabs", msg_cache_slabs)
655 else O_DEC(opt, "num-queries-per-thread", num_queries_per_thread)
656 else O_UNS(opt, "jostle-timeout", jostle_time)
657 else O_MEM(opt, "so-rcvbuf", so_rcvbuf)
658 else O_MEM(opt, "so-sndbuf", so_sndbuf)
659 else O_YNO(opt, "so-reuseport", so_reuseport)
660 else O_YNO(opt, "ip-transparent", ip_transparent)
661 else O_MEM(opt, "rrset-cache-size", rrset_cache_size)
662 else O_DEC(opt, "rrset-cache-slabs", rrset_cache_slabs)
663 else O_YNO(opt, "prefetch-key", prefetch_key)
664 else O_YNO(opt, "prefetch", prefetch)
665 else O_DEC(opt, "cache-max-ttl", max_ttl)
666 else O_DEC(opt, "cache-max-negative-ttl", max_negative_ttl)
667 else O_DEC(opt, "cache-min-ttl", min_ttl)
668 else O_DEC(opt, "infra-host-ttl", host_ttl)
669 else O_DEC(opt, "infra-cache-slabs", infra_cache_slabs)
670 else O_DEC(opt, "infra-cache-min-rtt", infra_cache_min_rtt)
671 else O_MEM(opt, "infra-cache-numhosts", infra_cache_numhosts)
672 else O_UNS(opt, "delay-close", delay_close)
673 else O_YNO(opt, "do-ip4", do_ip4)
674 else O_YNO(opt, "do-ip6", do_ip6)
675 else O_YNO(opt, "do-udp", do_udp)
676 else O_YNO(opt, "do-tcp", do_tcp)
677 else O_YNO(opt, "tcp-upstream", tcp_upstream)
678 else O_YNO(opt, "ssl-upstream", ssl_upstream)
679 else O_STR(opt, "ssl-service-key", ssl_service_key)
680 else O_STR(opt, "ssl-service-pem", ssl_service_pem)
681 else O_DEC(opt, "ssl-port", ssl_port)
682 else O_YNO(opt, "do-daemonize", do_daemonize)
683 else O_STR(opt, "chroot", chrootdir)
684 else O_STR(opt, "username", username)
685 else O_STR(opt, "directory", directory)
686 else O_STR(opt, "logfile", logfile)
687 else O_YNO(opt, "log-queries", log_queries)
688 else O_STR(opt, "pidfile", pidfile)
689 else O_YNO(opt, "hide-identity", hide_identity)
690 else O_YNO(opt, "hide-version", hide_version)
691 else O_STR(opt, "identity", identity)
692 else O_STR(opt, "version", version)
693 else O_STR(opt, "target-fetch-policy", target_fetch_policy)
694 else O_YNO(opt, "harden-short-bufsize", harden_short_bufsize)
695 else O_YNO(opt, "harden-large-queries", harden_large_queries)
696 else O_YNO(opt, "harden-glue", harden_glue)
697 else O_YNO(opt, "harden-dnssec-stripped", harden_dnssec_stripped)
698 else O_YNO(opt, "harden-below-nxdomain", harden_below_nxdomain)
699 else O_YNO(opt, "harden-referral-path", harden_referral_path)
700 else O_YNO(opt, "harden-algo-downgrade", harden_algo_downgrade)
701 else O_YNO(opt, "use-caps-for-id", use_caps_bits_for_id)
702 else O_LST(opt, "caps-whitelist", caps_whitelist)
703 else O_DEC(opt, "unwanted-reply-threshold", unwanted_threshold)
704 else O_YNO(opt, "do-not-query-localhost", donotquery_localhost)
705 else O_STR(opt, "module-config", module_conf)
706 else O_STR(opt, "dlv-anchor-file", dlv_anchor_file)
707 else O_DEC(opt, "val-bogus-ttl", bogus_ttl)
708 else O_YNO(opt, "val-clean-additional", val_clean_additional)
709 else O_DEC(opt, "val-log-level", val_log_level)
710 else O_YNO(opt, "val-permissive-mode", val_permissive_mode)
711 else O_YNO(opt, "ignore-cd-flag", ignore_cd)
712 else O_STR(opt, "val-nsec3-keysize-iterations",val_nsec3_key_iterations)
713 else O_UNS(opt, "add-holddown", add_holddown)
714 else O_UNS(opt, "del-holddown", del_holddown)
715 else O_UNS(opt, "keep-missing", keep_missing)
716 else O_YNO(opt, "permit-small-holddown", permit_small_holddown)
717 else O_MEM(opt, "key-cache-size", key_cache_size)
718 else O_DEC(opt, "key-cache-slabs", key_cache_slabs)
719 else O_MEM(opt, "neg-cache-size", neg_cache_size)
720 else O_YNO(opt, "control-enable", remote_control_enable)
721 else O_DEC(opt, "control-port", control_port)
722 else O_STR(opt, "server-key-file", server_key_file)
723 else O_STR(opt, "server-cert-file", server_cert_file)
724 else O_STR(opt, "control-key-file", control_key_file)
725 else O_STR(opt, "control-cert-file", control_cert_file)
726 else O_LST(opt, "root-hints", root_hints)
727 else O_LS2(opt, "access-control", acls)
728 else O_LST(opt, "do-not-query-address", donotqueryaddrs)
729 else O_LST(opt, "private-address", private_address)
730 else O_LST(opt, "private-domain", private_domain)
731 else O_LST(opt, "auto-trust-anchor-file", auto_trust_anchor_file_list)
732 else O_LST(opt, "trust-anchor-file", trust_anchor_file_list)
733 else O_LST(opt, "trust-anchor", trust_anchor_list)
734 else O_LST(opt, "trusted-keys-file", trusted_keys_file_list)
735 else O_LST(opt, "dlv-anchor", dlv_anchor_list)
736 else O_LST(opt, "control-interface", control_ifs)
737 else O_LST(opt, "domain-insecure", domain_insecure)
738 else O_UNS(opt, "val-override-date", val_date_override)
739 else O_YNO(opt, "minimal-responses", minimal_responses)
740 else O_YNO(opt, "rrset-roundrobin", rrset_roundrobin)
741 else O_YNO(opt, "unblock-lan-zones", unblock_lan_zones)
742 else O_DEC(opt, "max-udp-size", max_udp_size)
743 else O_STR(opt, "python-script", python_script)
744 else O_DEC(opt, "ratelimit", ratelimit)
745 else O_MEM(opt, "ratelimit-size", ratelimit_size)
746 else O_DEC(opt, "ratelimit-slabs", ratelimit_slabs)
747 else O_LS2(opt, "ratelimit-for-domain", ratelimit_for_domain)
748 else O_LS2(opt, "ratelimit-below-domain", ratelimit_below_domain)
749 else O_DEC(opt, "ratelimit-factor", ratelimit_factor)
750 else O_DEC(opt, "val-sig-skew-min", val_sig_skew_min)
751 else O_DEC(opt, "val-sig-skew-max", val_sig_skew_max)
752 else O_YNO(opt, "qname-minimisation", qname_minimisation)
753 /* not here:
754 * outgoing-permit, outgoing-avoid - have list of ports
755 * local-zone - zones and nodefault variables
756 * local-data - see below
757 * local-data-ptr - converted to local-data entries
758 * stub-zone, name, stub-addr, stub-host, stub-prime
759 * forward-zone, name, forward-addr, forward-host
760 */
761 else return 0;
762 return 1;
763 }
764
765 /** initialize the global cfg_parser object */
766 static void
create_cfg_parser(struct config_file * cfg,char * filename,const char * chroot)767 create_cfg_parser(struct config_file* cfg, char* filename, const char* chroot)
768 {
769 static struct config_parser_state st;
770 cfg_parser = &st;
771 cfg_parser->filename = filename;
772 cfg_parser->line = 1;
773 cfg_parser->errors = 0;
774 cfg_parser->cfg = cfg;
775 cfg_parser->chroot = chroot;
776 init_cfg_parse();
777 }
778
779 int
config_read(struct config_file * cfg,const char * filename,const char * chroot)780 config_read(struct config_file* cfg, const char* filename, const char* chroot)
781 {
782 FILE *in;
783 char *fname = (char*)filename;
784 #ifdef HAVE_GLOB
785 glob_t g;
786 size_t i;
787 int r, flags;
788 #endif
789 if(!fname)
790 return 1;
791
792 /* check for wildcards */
793 #ifdef HAVE_GLOB
794 if(!(!strchr(fname, '*') && !strchr(fname, '?') && !strchr(fname, '[') &&
795 !strchr(fname, '{') && !strchr(fname, '~'))) {
796 verbose(VERB_QUERY, "wildcard found, processing %s", fname);
797 flags = 0
798 #ifdef GLOB_ERR
799 | GLOB_ERR
800 #endif
801 #ifdef GLOB_NOSORT
802 | GLOB_NOSORT
803 #endif
804 #ifdef GLOB_BRACE
805 | GLOB_BRACE
806 #endif
807 #ifdef GLOB_TILDE
808 | GLOB_TILDE
809 #endif
810 ;
811 memset(&g, 0, sizeof(g));
812 r = glob(fname, flags, NULL, &g);
813 if(r) {
814 /* some error */
815 globfree(&g);
816 if(r == GLOB_NOMATCH) {
817 verbose(VERB_QUERY, "include: "
818 "no matches for %s", fname);
819 return 1;
820 } else if(r == GLOB_NOSPACE) {
821 log_err("include: %s: "
822 "fnametern out of memory", fname);
823 } else if(r == GLOB_ABORTED) {
824 log_err("wildcard include: %s: expansion "
825 "aborted (%s)", fname, strerror(errno));
826 } else {
827 log_err("wildcard include: %s: expansion "
828 "failed (%s)", fname, strerror(errno));
829 }
830 /* ignore globs that yield no files */
831 return 1;
832 }
833 /* process files found, if any */
834 for(i=0; i<(size_t)g.gl_pathc; i++) {
835 if(!config_read(cfg, g.gl_pathv[i], chroot)) {
836 log_err("error reading wildcard "
837 "include: %s", g.gl_pathv[i]);
838 globfree(&g);
839 return 0;
840 }
841 }
842 globfree(&g);
843 return 1;
844 }
845 #endif /* HAVE_GLOB */
846
847 in = fopen(fname, "r");
848 if(!in) {
849 log_err("Could not open %s: %s", fname, strerror(errno));
850 return 0;
851 }
852 create_cfg_parser(cfg, fname, chroot);
853 ub_c_in = in;
854 ub_c_parse();
855 fclose(in);
856
857 if(cfg_parser->errors != 0) {
858 fprintf(stderr, "read %s failed: %d errors in configuration file\n",
859 fname, cfg_parser->errors);
860 errno=EINVAL;
861 return 0;
862 }
863
864 return 1;
865 }
866
867 void
config_delstrlist(struct config_strlist * p)868 config_delstrlist(struct config_strlist* p)
869 {
870 struct config_strlist *np;
871 while(p) {
872 np = p->next;
873 free(p->str);
874 free(p);
875 p = np;
876 }
877 }
878
879 void
config_deldblstrlist(struct config_str2list * p)880 config_deldblstrlist(struct config_str2list* p)
881 {
882 struct config_str2list *np;
883 while(p) {
884 np = p->next;
885 free(p->str);
886 free(p->str2);
887 free(p);
888 p = np;
889 }
890 }
891
892 void
config_delstubs(struct config_stub * p)893 config_delstubs(struct config_stub* p)
894 {
895 struct config_stub* np;
896 while(p) {
897 np = p->next;
898 free(p->name);
899 config_delstrlist(p->hosts);
900 config_delstrlist(p->addrs);
901 free(p);
902 p = np;
903 }
904 }
905
906 void
config_delete(struct config_file * cfg)907 config_delete(struct config_file* cfg)
908 {
909 if(!cfg) return;
910 free(cfg->username);
911 free(cfg->chrootdir);
912 free(cfg->directory);
913 free(cfg->logfile);
914 free(cfg->pidfile);
915 free(cfg->target_fetch_policy);
916 free(cfg->ssl_service_key);
917 free(cfg->ssl_service_pem);
918 if(cfg->ifs) {
919 int i;
920 for(i=0; i<cfg->num_ifs; i++)
921 free(cfg->ifs[i]);
922 free(cfg->ifs);
923 }
924 if(cfg->out_ifs) {
925 int i;
926 for(i=0; i<cfg->num_out_ifs; i++)
927 free(cfg->out_ifs[i]);
928 free(cfg->out_ifs);
929 }
930 config_delstubs(cfg->stubs);
931 config_delstubs(cfg->forwards);
932 config_delstrlist(cfg->donotqueryaddrs);
933 config_delstrlist(cfg->root_hints);
934 free(cfg->identity);
935 free(cfg->version);
936 free(cfg->module_conf);
937 free(cfg->outgoing_avail_ports);
938 config_delstrlist(cfg->caps_whitelist);
939 config_delstrlist(cfg->private_address);
940 config_delstrlist(cfg->private_domain);
941 config_delstrlist(cfg->auto_trust_anchor_file_list);
942 config_delstrlist(cfg->trust_anchor_file_list);
943 config_delstrlist(cfg->trusted_keys_file_list);
944 config_delstrlist(cfg->trust_anchor_list);
945 config_delstrlist(cfg->domain_insecure);
946 free(cfg->dlv_anchor_file);
947 config_delstrlist(cfg->dlv_anchor_list);
948 config_deldblstrlist(cfg->acls);
949 free(cfg->val_nsec3_key_iterations);
950 config_deldblstrlist(cfg->local_zones);
951 config_delstrlist(cfg->local_zones_nodefault);
952 config_delstrlist(cfg->local_data);
953 config_delstrlist(cfg->control_ifs);
954 free(cfg->server_key_file);
955 free(cfg->server_cert_file);
956 free(cfg->control_key_file);
957 free(cfg->control_cert_file);
958 free(cfg->dns64_prefix);
959 free(cfg->dnstap_socket_path);
960 free(cfg->dnstap_identity);
961 free(cfg->dnstap_version);
962 config_deldblstrlist(cfg->ratelimit_for_domain);
963 config_deldblstrlist(cfg->ratelimit_below_domain);
964 free(cfg);
965 }
966
967 static void
init_outgoing_availports(int * a,int num)968 init_outgoing_availports(int* a, int num)
969 {
970 /* generated with make iana_update */
971 const int iana_assigned[] = {
972 #include "util/iana_ports.inc"
973 -1 }; /* end marker to put behind trailing comma */
974
975 int i;
976 /* do not use <1024, that could be trouble with the system, privs */
977 for(i=1024; i<num; i++) {
978 a[i] = i;
979 }
980 /* create empty spot at 49152 to keep ephemeral ports available
981 * to other programs */
982 for(i=49152; i<49152+256; i++)
983 a[i] = 0;
984 /* pick out all the IANA assigned ports */
985 for(i=0; iana_assigned[i]!=-1; i++) {
986 if(iana_assigned[i] < num)
987 a[iana_assigned[i]] = 0;
988 }
989 }
990
991 int
cfg_mark_ports(const char * str,int allow,int * avail,int num)992 cfg_mark_ports(const char* str, int allow, int* avail, int num)
993 {
994 char* mid = strchr(str, '-');
995 if(!mid) {
996 int port = atoi(str);
997 if(port == 0 && strcmp(str, "0") != 0) {
998 log_err("cannot parse port number '%s'", str);
999 return 0;
1000 }
1001 if(port < num)
1002 avail[port] = (allow?port:0);
1003 } else {
1004 int i, low, high = atoi(mid+1);
1005 char buf[16];
1006 if(high == 0 && strcmp(mid+1, "0") != 0) {
1007 log_err("cannot parse port number '%s'", mid+1);
1008 return 0;
1009 }
1010 if( (int)(mid-str)+1 >= (int)sizeof(buf) ) {
1011 log_err("cannot parse port number '%s'", str);
1012 return 0;
1013 }
1014 if(mid > str)
1015 memcpy(buf, str, (size_t)(mid-str));
1016 buf[mid-str] = 0;
1017 low = atoi(buf);
1018 if(low == 0 && strcmp(buf, "0") != 0) {
1019 log_err("cannot parse port number '%s'", buf);
1020 return 0;
1021 }
1022 for(i=low; i<=high; i++) {
1023 if(i < num)
1024 avail[i] = (allow?i:0);
1025 }
1026 return 1;
1027 }
1028 return 1;
1029 }
1030
1031 int
cfg_scan_ports(int * avail,int num)1032 cfg_scan_ports(int* avail, int num)
1033 {
1034 int i;
1035 int count = 0;
1036 for(i=0; i<num; i++) {
1037 if(avail[i])
1038 count++;
1039 }
1040 return count;
1041 }
1042
cfg_condense_ports(struct config_file * cfg,int ** avail)1043 int cfg_condense_ports(struct config_file* cfg, int** avail)
1044 {
1045 int num = cfg_scan_ports(cfg->outgoing_avail_ports, 65536);
1046 int i, at = 0;
1047 *avail = NULL;
1048 if(num == 0)
1049 return 0;
1050 *avail = (int*)reallocarray(NULL, (size_t)num, sizeof(int));
1051 if(!*avail)
1052 return 0;
1053 for(i=0; i<65536; i++) {
1054 if(cfg->outgoing_avail_ports[i])
1055 (*avail)[at++] = cfg->outgoing_avail_ports[i];
1056 }
1057 log_assert(at == num);
1058 return num;
1059 }
1060
1061 /** print error with file and line number */
ub_c_error_va_list(const char * fmt,va_list args)1062 static void ub_c_error_va_list(const char *fmt, va_list args)
1063 {
1064 cfg_parser->errors++;
1065 fprintf(stderr, "%s:%d: error: ", cfg_parser->filename,
1066 cfg_parser->line);
1067 vfprintf(stderr, fmt, args);
1068 fprintf(stderr, "\n");
1069 }
1070
1071 /** print error with file and line number */
ub_c_error_msg(const char * fmt,...)1072 void ub_c_error_msg(const char* fmt, ...)
1073 {
1074 va_list args;
1075 va_start(args, fmt);
1076 ub_c_error_va_list(fmt, args);
1077 va_end(args);
1078 }
1079
ub_c_error(const char * str)1080 void ub_c_error(const char *str)
1081 {
1082 cfg_parser->errors++;
1083 fprintf(stderr, "%s:%d: error: %s\n", cfg_parser->filename,
1084 cfg_parser->line, str);
1085 }
1086
ub_c_wrap(void)1087 int ub_c_wrap(void)
1088 {
1089 return 1;
1090 }
1091
cfg_strlist_append(struct config_strlist_head * list,char * item)1092 int cfg_strlist_append(struct config_strlist_head* list, char* item)
1093 {
1094 struct config_strlist *s;
1095 if(!item || !list)
1096 return 0;
1097 s = (struct config_strlist*)calloc(1, sizeof(struct config_strlist));
1098 if(!s)
1099 return 0;
1100 s->str = item;
1101 s->next = NULL;
1102 if(list->last)
1103 list->last->next = s;
1104 else
1105 list->first = s;
1106 list->last = s;
1107 return 1;
1108 }
1109
1110 int
cfg_strlist_insert(struct config_strlist ** head,char * item)1111 cfg_strlist_insert(struct config_strlist** head, char* item)
1112 {
1113 struct config_strlist *s;
1114 if(!item || !head)
1115 return 0;
1116 s = (struct config_strlist*)calloc(1, sizeof(struct config_strlist));
1117 if(!s)
1118 return 0;
1119 s->str = item;
1120 s->next = *head;
1121 *head = s;
1122 return 1;
1123 }
1124
1125 int
cfg_str2list_insert(struct config_str2list ** head,char * item,char * i2)1126 cfg_str2list_insert(struct config_str2list** head, char* item, char* i2)
1127 {
1128 struct config_str2list *s;
1129 if(!item || !i2 || !head)
1130 return 0;
1131 s = (struct config_str2list*)calloc(1, sizeof(struct config_str2list));
1132 if(!s)
1133 return 0;
1134 s->str = item;
1135 s->str2 = i2;
1136 s->next = *head;
1137 *head = s;
1138 return 1;
1139 }
1140
1141 time_t
cfg_convert_timeval(const char * str)1142 cfg_convert_timeval(const char* str)
1143 {
1144 time_t t;
1145 struct tm tm;
1146 memset(&tm, 0, sizeof(tm));
1147 if(strlen(str) < 14)
1148 return 0;
1149 if(sscanf(str, "%4d%2d%2d%2d%2d%2d", &tm.tm_year, &tm.tm_mon,
1150 &tm.tm_mday, &tm.tm_hour, &tm.tm_min, &tm.tm_sec) != 6)
1151 return 0;
1152 tm.tm_year -= 1900;
1153 tm.tm_mon--;
1154 /* Check values */
1155 if (tm.tm_year < 70) return 0;
1156 if (tm.tm_mon < 0 || tm.tm_mon > 11) return 0;
1157 if (tm.tm_mday < 1 || tm.tm_mday > 31) return 0;
1158 if (tm.tm_hour < 0 || tm.tm_hour > 23) return 0;
1159 if (tm.tm_min < 0 || tm.tm_min > 59) return 0;
1160 if (tm.tm_sec < 0 || tm.tm_sec > 59) return 0;
1161 /* call ldns conversion function */
1162 t = sldns_mktime_from_utc(&tm);
1163 return t;
1164 }
1165
1166 int
cfg_count_numbers(const char * s)1167 cfg_count_numbers(const char* s)
1168 {
1169 /* format ::= (sp num)+ sp */
1170 /* num ::= [-](0-9)+ */
1171 /* sp ::= (space|tab)* */
1172 int num = 0;
1173 while(*s) {
1174 while(*s && isspace((unsigned char)*s))
1175 s++;
1176 if(!*s) /* end of string */
1177 break;
1178 if(*s == '-')
1179 s++;
1180 if(!*s) /* only - not allowed */
1181 return 0;
1182 if(!isdigit((unsigned char)*s)) /* bad character */
1183 return 0;
1184 while(*s && isdigit((unsigned char)*s))
1185 s++;
1186 num++;
1187 }
1188 return num;
1189 }
1190
1191 /** all digit number */
isalldigit(const char * str,size_t l)1192 static int isalldigit(const char* str, size_t l)
1193 {
1194 size_t i;
1195 for(i=0; i<l; i++)
1196 if(!isdigit((unsigned char)str[i]))
1197 return 0;
1198 return 1;
1199 }
1200
1201 int
cfg_parse_memsize(const char * str,size_t * res)1202 cfg_parse_memsize(const char* str, size_t* res)
1203 {
1204 size_t len;
1205 size_t mult = 1;
1206 if(!str || (len=(size_t)strlen(str)) == 0) {
1207 log_err("not a size: '%s'", str);
1208 return 0;
1209 }
1210 if(isalldigit(str, len)) {
1211 *res = (size_t)atol(str);
1212 return 1;
1213 }
1214 /* check appended num */
1215 while(len>0 && str[len-1]==' ')
1216 len--;
1217 if(len > 1 && str[len-1] == 'b')
1218 len--;
1219 else if(len > 1 && str[len-1] == 'B')
1220 len--;
1221
1222 if(len > 1 && tolower((unsigned char)str[len-1]) == 'g')
1223 mult = 1024*1024*1024;
1224 else if(len > 1 && tolower((unsigned char)str[len-1]) == 'm')
1225 mult = 1024*1024;
1226 else if(len > 1 && tolower((unsigned char)str[len-1]) == 'k')
1227 mult = 1024;
1228 else if(len > 0 && isdigit((unsigned char)str[len-1]))
1229 mult = 1;
1230 else {
1231 log_err("unknown size specifier: '%s'", str);
1232 return 0;
1233 }
1234 while(len>1 && str[len-2]==' ')
1235 len--;
1236
1237 if(!isalldigit(str, len-1)) {
1238 log_err("unknown size specifier: '%s'", str);
1239 return 0;
1240 }
1241 *res = ((size_t)atol(str)) * mult;
1242 return 1;
1243 }
1244
1245 void
config_apply(struct config_file * config)1246 config_apply(struct config_file* config)
1247 {
1248 MAX_TTL = (time_t)config->max_ttl;
1249 MIN_TTL = (time_t)config->min_ttl;
1250 MAX_NEG_TTL = (time_t)config->max_negative_ttl;
1251 RTT_MIN_TIMEOUT = config->infra_cache_min_rtt;
1252 EDNS_ADVERTISED_SIZE = (uint16_t)config->edns_buffer_size;
1253 MINIMAL_RESPONSES = config->minimal_responses;
1254 RRSET_ROUNDROBIN = config->rrset_roundrobin;
1255 log_set_time_asc(config->log_time_ascii);
1256 autr_permit_small_holddown = config->permit_small_holddown;
1257 }
1258
config_lookup_uid(struct config_file * cfg)1259 void config_lookup_uid(struct config_file* cfg)
1260 {
1261 #ifdef HAVE_GETPWNAM
1262 /* translate username into uid and gid */
1263 if(cfg->username && cfg->username[0]) {
1264 struct passwd *pwd;
1265 if((pwd = getpwnam(cfg->username)) != NULL) {
1266 cfg_uid = pwd->pw_uid;
1267 cfg_gid = pwd->pw_gid;
1268 }
1269 }
1270 #else
1271 (void)cfg;
1272 #endif
1273 }
1274
1275 /**
1276 * Calculate string length of full pathname in original filesys
1277 * @param fname: the path name to convert.
1278 * Must not be null or empty.
1279 * @param cfg: config struct for chroot and chdir (if set).
1280 * @param use_chdir: if false, only chroot is applied.
1281 * @return length of string.
1282 * remember to allocate one more for 0 at end in mallocs.
1283 */
1284 static size_t
strlen_after_chroot(const char * fname,struct config_file * cfg,int use_chdir)1285 strlen_after_chroot(const char* fname, struct config_file* cfg, int use_chdir)
1286 {
1287 size_t len = 0;
1288 int slashit = 0;
1289 if(cfg->chrootdir && cfg->chrootdir[0] &&
1290 strncmp(cfg->chrootdir, fname, strlen(cfg->chrootdir)) == 0) {
1291 /* already full pathname, return it */
1292 return strlen(fname);
1293 }
1294 /* chroot */
1295 if(cfg->chrootdir && cfg->chrootdir[0]) {
1296 /* start with chrootdir */
1297 len += strlen(cfg->chrootdir);
1298 slashit = 1;
1299 }
1300 /* chdir */
1301 #ifdef UB_ON_WINDOWS
1302 if(fname[0] != 0 && fname[1] == ':') {
1303 /* full path, no chdir */
1304 } else
1305 #endif
1306 if(fname[0] == '/' || !use_chdir) {
1307 /* full path, no chdir */
1308 } else if(cfg->directory && cfg->directory[0]) {
1309 /* prepend chdir */
1310 if(slashit && cfg->directory[0] != '/')
1311 len++;
1312 if(cfg->chrootdir && cfg->chrootdir[0] &&
1313 strncmp(cfg->chrootdir, cfg->directory,
1314 strlen(cfg->chrootdir)) == 0)
1315 len += strlen(cfg->directory)-strlen(cfg->chrootdir);
1316 else len += strlen(cfg->directory);
1317 slashit = 1;
1318 }
1319 /* fname */
1320 if(slashit && fname[0] != '/')
1321 len++;
1322 len += strlen(fname);
1323 return len;
1324 }
1325
1326 char*
fname_after_chroot(const char * fname,struct config_file * cfg,int use_chdir)1327 fname_after_chroot(const char* fname, struct config_file* cfg, int use_chdir)
1328 {
1329 size_t len = strlen_after_chroot(fname, cfg, use_chdir)+1;
1330 int slashit = 0;
1331 char* buf = (char*)malloc(len);
1332 if(!buf)
1333 return NULL;
1334 buf[0] = 0;
1335 /* is fname already in chroot ? */
1336 if(cfg->chrootdir && cfg->chrootdir[0] &&
1337 strncmp(cfg->chrootdir, fname, strlen(cfg->chrootdir)) == 0) {
1338 /* already full pathname, return it */
1339 (void)strlcpy(buf, fname, len);
1340 buf[len-1] = 0;
1341 return buf;
1342 }
1343 /* chroot */
1344 if(cfg->chrootdir && cfg->chrootdir[0]) {
1345 /* start with chrootdir */
1346 (void)strlcpy(buf, cfg->chrootdir, len);
1347 slashit = 1;
1348 }
1349 #ifdef UB_ON_WINDOWS
1350 if(fname[0] != 0 && fname[1] == ':') {
1351 /* full path, no chdir */
1352 } else
1353 #endif
1354 /* chdir */
1355 if(fname[0] == '/' || !use_chdir) {
1356 /* full path, no chdir */
1357 } else if(cfg->directory && cfg->directory[0]) {
1358 /* prepend chdir */
1359 if(slashit && cfg->directory[0] != '/')
1360 (void)strlcat(buf, "/", len);
1361 /* is the directory already in the chroot? */
1362 if(cfg->chrootdir && cfg->chrootdir[0] &&
1363 strncmp(cfg->chrootdir, cfg->directory,
1364 strlen(cfg->chrootdir)) == 0)
1365 (void)strlcat(buf, cfg->directory+strlen(cfg->chrootdir),
1366 len);
1367 else (void)strlcat(buf, cfg->directory, len);
1368 slashit = 1;
1369 }
1370 /* fname */
1371 if(slashit && fname[0] != '/')
1372 (void)strlcat(buf, "/", len);
1373 (void)strlcat(buf, fname, len);
1374 buf[len-1] = 0;
1375 return buf;
1376 }
1377
1378 /** return next space character in string */
next_space_pos(const char * str)1379 static char* next_space_pos(const char* str)
1380 {
1381 char* sp = strchr(str, ' ');
1382 char* tab = strchr(str, '\t');
1383 if(!tab && !sp)
1384 return NULL;
1385 if(!sp) return tab;
1386 if(!tab) return sp;
1387 return (sp<tab)?sp:tab;
1388 }
1389
1390 /** return last space character in string */
last_space_pos(const char * str)1391 static char* last_space_pos(const char* str)
1392 {
1393 char* sp = strrchr(str, ' ');
1394 char* tab = strrchr(str, '\t');
1395 if(!tab && !sp)
1396 return NULL;
1397 if(!sp) return tab;
1398 if(!tab) return sp;
1399 return (sp>tab)?sp:tab;
1400 }
1401
1402 int
cfg_parse_local_zone(struct config_file * cfg,const char * val)1403 cfg_parse_local_zone(struct config_file* cfg, const char* val)
1404 {
1405 const char *type, *name_end, *name;
1406 char buf[256];
1407
1408 /* parse it as: [zone_name] [between stuff] [zone_type] */
1409 name = val;
1410 while(*name && isspace((unsigned char)*name))
1411 name++;
1412 if(!*name) {
1413 log_err("syntax error: too short: %s", val);
1414 return 0;
1415 }
1416 name_end = next_space_pos(name);
1417 if(!name_end || !*name_end) {
1418 log_err("syntax error: expected zone type: %s", val);
1419 return 0;
1420 }
1421 if (name_end - name > 255) {
1422 log_err("syntax error: bad zone name: %s", val);
1423 return 0;
1424 }
1425 (void)strlcpy(buf, name, sizeof(buf));
1426 buf[name_end-name] = '\0';
1427
1428 type = last_space_pos(name_end);
1429 while(type && *type && isspace((unsigned char)*type))
1430 type++;
1431 if(!type || !*type) {
1432 log_err("syntax error: expected zone type: %s", val);
1433 return 0;
1434 }
1435
1436 if(strcmp(type, "nodefault")==0) {
1437 return cfg_strlist_insert(&cfg->local_zones_nodefault,
1438 strdup(name));
1439 } else {
1440 return cfg_str2list_insert(&cfg->local_zones, strdup(buf),
1441 strdup(type));
1442 }
1443 }
1444
cfg_ptr_reverse(char * str)1445 char* cfg_ptr_reverse(char* str)
1446 {
1447 char* ip, *ip_end;
1448 char* name;
1449 char* result;
1450 char buf[1024];
1451 struct sockaddr_storage addr;
1452 socklen_t addrlen;
1453
1454 /* parse it as: [IP] [between stuff] [name] */
1455 ip = str;
1456 while(*ip && isspace((unsigned char)*ip))
1457 ip++;
1458 if(!*ip) {
1459 log_err("syntax error: too short: %s", str);
1460 return NULL;
1461 }
1462 ip_end = next_space_pos(ip);
1463 if(!ip_end || !*ip_end) {
1464 log_err("syntax error: expected name: %s", str);
1465 return NULL;
1466 }
1467
1468 name = last_space_pos(ip_end);
1469 if(!name || !*name) {
1470 log_err("syntax error: expected name: %s", str);
1471 return NULL;
1472 }
1473
1474 sscanf(ip, "%100s", buf);
1475 buf[sizeof(buf)-1]=0;
1476
1477 if(!ipstrtoaddr(buf, UNBOUND_DNS_PORT, &addr, &addrlen)) {
1478 log_err("syntax error: cannot parse address: %s", str);
1479 return NULL;
1480 }
1481
1482 /* reverse IPv4:
1483 * ddd.ddd.ddd.ddd.in-addr-arpa.
1484 * IPv6: (h.){32}.ip6.arpa. */
1485
1486 if(addr_is_ip6(&addr, addrlen)) {
1487 uint8_t ad[16];
1488 const char* hex = "0123456789abcdef";
1489 char *p = buf;
1490 int i;
1491 memmove(ad, &((struct sockaddr_in6*)&addr)->sin6_addr,
1492 sizeof(ad));
1493 for(i=15; i>=0; i--) {
1494 uint8_t b = ad[i];
1495 *p++ = hex[ (b&0x0f) ];
1496 *p++ = '.';
1497 *p++ = hex[ (b&0xf0) >> 4 ];
1498 *p++ = '.';
1499 }
1500 snprintf(buf+16*4, sizeof(buf)-16*4, "ip6.arpa. ");
1501 } else {
1502 uint8_t ad[4];
1503 memmove(ad, &((struct sockaddr_in*)&addr)->sin_addr,
1504 sizeof(ad));
1505 snprintf(buf, sizeof(buf), "%u.%u.%u.%u.in-addr.arpa. ",
1506 (unsigned)ad[3], (unsigned)ad[2],
1507 (unsigned)ad[1], (unsigned)ad[0]);
1508 }
1509
1510 /* printed the reverse address, now the between goop and name on end */
1511 while(*ip_end && isspace((unsigned char)*ip_end))
1512 ip_end++;
1513 if(name>ip_end) {
1514 snprintf(buf+strlen(buf), sizeof(buf)-strlen(buf), "%.*s",
1515 (int)(name-ip_end), ip_end);
1516 }
1517 snprintf(buf+strlen(buf), sizeof(buf)-strlen(buf), " PTR %s", name);
1518
1519 result = strdup(buf);
1520 if(!result) {
1521 log_err("out of memory parsing %s", str);
1522 return NULL;
1523 }
1524 return result;
1525 }
1526
1527 #ifdef UB_ON_WINDOWS
1528 char*
w_lookup_reg_str(const char * key,const char * name)1529 w_lookup_reg_str(const char* key, const char* name)
1530 {
1531 HKEY hk = NULL;
1532 DWORD type = 0;
1533 BYTE buf[1024];
1534 DWORD len = (DWORD)sizeof(buf);
1535 LONG ret;
1536 char* result = NULL;
1537 ret = RegOpenKeyEx(HKEY_LOCAL_MACHINE, key, 0, KEY_READ, &hk);
1538 if(ret == ERROR_FILE_NOT_FOUND)
1539 return NULL; /* key does not exist */
1540 else if(ret != ERROR_SUCCESS) {
1541 log_err("RegOpenKeyEx failed");
1542 return NULL;
1543 }
1544 ret = RegQueryValueEx(hk, (LPCTSTR)name, 0, &type, buf, &len);
1545 if(RegCloseKey(hk))
1546 log_err("RegCloseKey");
1547 if(ret == ERROR_FILE_NOT_FOUND)
1548 return NULL; /* name does not exist */
1549 else if(ret != ERROR_SUCCESS) {
1550 log_err("RegQueryValueEx failed");
1551 return NULL;
1552 }
1553 if(type == REG_SZ || type == REG_MULTI_SZ || type == REG_EXPAND_SZ) {
1554 buf[sizeof(buf)-1] = 0;
1555 buf[sizeof(buf)-2] = 0; /* for multi_sz */
1556 result = strdup((char*)buf);
1557 if(!result) log_err("out of memory");
1558 }
1559 return result;
1560 }
1561
w_config_adjust_directory(struct config_file * cfg)1562 void w_config_adjust_directory(struct config_file* cfg)
1563 {
1564 if(cfg->directory && cfg->directory[0]) {
1565 TCHAR dirbuf[2*MAX_PATH+4];
1566 if(strcmp(cfg->directory, "%EXECUTABLE%") == 0) {
1567 /* get executable path, and if that contains
1568 * directories, snip off the filename part */
1569 dirbuf[0] = 0;
1570 if(!GetModuleFileName(NULL, dirbuf, MAX_PATH))
1571 log_err("could not GetModuleFileName");
1572 if(strrchr(dirbuf, '\\')) {
1573 (strrchr(dirbuf, '\\'))[0] = 0;
1574 } else log_err("GetModuleFileName had no path");
1575 if(dirbuf[0]) {
1576 /* adjust directory for later lookups to work*/
1577 free(cfg->directory);
1578 cfg->directory = memdup(dirbuf, strlen(dirbuf)+1);
1579 }
1580 }
1581 }
1582 }
1583 #endif /* UB_ON_WINDOWS */
1584
errinf(struct module_qstate * qstate,const char * str)1585 void errinf(struct module_qstate* qstate, const char* str)
1586 {
1587 struct config_strlist* p;
1588 if(qstate->env->cfg->val_log_level < 2 || !str)
1589 return;
1590 p = (struct config_strlist*)regional_alloc(qstate->region, sizeof(*p));
1591 if(!p) {
1592 log_err("malloc failure in validator-error-info string");
1593 return;
1594 }
1595 p->next = NULL;
1596 p->str = regional_strdup(qstate->region, str);
1597 if(!p->str) {
1598 log_err("malloc failure in validator-error-info string");
1599 return;
1600 }
1601 /* add at end */
1602 if(qstate->errinf) {
1603 struct config_strlist* q = qstate->errinf;
1604 while(q->next)
1605 q = q->next;
1606 q->next = p;
1607 } else qstate->errinf = p;
1608 }
1609
errinf_origin(struct module_qstate * qstate,struct sock_list * origin)1610 void errinf_origin(struct module_qstate* qstate, struct sock_list *origin)
1611 {
1612 struct sock_list* p;
1613 if(qstate->env->cfg->val_log_level < 2)
1614 return;
1615 for(p=origin; p; p=p->next) {
1616 char buf[256];
1617 if(p == origin)
1618 snprintf(buf, sizeof(buf), "from ");
1619 else snprintf(buf, sizeof(buf), "and ");
1620 if(p->len == 0)
1621 snprintf(buf+strlen(buf), sizeof(buf)-strlen(buf),
1622 "cache");
1623 else
1624 addr_to_str(&p->addr, p->len, buf+strlen(buf),
1625 sizeof(buf)-strlen(buf));
1626 errinf(qstate, buf);
1627 }
1628 }
1629
errinf_to_str(struct module_qstate * qstate)1630 char* errinf_to_str(struct module_qstate* qstate)
1631 {
1632 char buf[20480];
1633 char* p = buf;
1634 size_t left = sizeof(buf);
1635 struct config_strlist* s;
1636 char dname[LDNS_MAX_DOMAINLEN+1];
1637 char t[16], c[16];
1638 sldns_wire2str_type_buf(qstate->qinfo.qtype, t, sizeof(t));
1639 sldns_wire2str_class_buf(qstate->qinfo.qclass, c, sizeof(c));
1640 dname_str(qstate->qinfo.qname, dname);
1641 snprintf(p, left, "validation failure <%s %s %s>:", dname, t, c);
1642 left -= strlen(p); p += strlen(p);
1643 if(!qstate->errinf)
1644 snprintf(p, left, " misc failure");
1645 else for(s=qstate->errinf; s; s=s->next) {
1646 snprintf(p, left, " %s", s->str);
1647 left -= strlen(p); p += strlen(p);
1648 }
1649 p = strdup(buf);
1650 if(!p)
1651 log_err("malloc failure in errinf_to_str");
1652 return p;
1653 }
1654
errinf_rrset(struct module_qstate * qstate,struct ub_packed_rrset_key * rr)1655 void errinf_rrset(struct module_qstate* qstate, struct ub_packed_rrset_key *rr)
1656 {
1657 char buf[1024];
1658 char dname[LDNS_MAX_DOMAINLEN+1];
1659 char t[16], c[16];
1660 if(qstate->env->cfg->val_log_level < 2 || !rr)
1661 return;
1662 sldns_wire2str_type_buf(ntohs(rr->rk.type), t, sizeof(t));
1663 sldns_wire2str_class_buf(ntohs(rr->rk.rrset_class), c, sizeof(c));
1664 dname_str(rr->rk.dname, dname);
1665 snprintf(buf, sizeof(buf), "for <%s %s %s>", dname, t, c);
1666 errinf(qstate, buf);
1667 }
1668
errinf_dname(struct module_qstate * qstate,const char * str,uint8_t * dname)1669 void errinf_dname(struct module_qstate* qstate, const char* str, uint8_t* dname)
1670 {
1671 char b[1024];
1672 char buf[LDNS_MAX_DOMAINLEN+1];
1673 if(qstate->env->cfg->val_log_level < 2 || !str || !dname)
1674 return;
1675 dname_str(dname, buf);
1676 snprintf(b, sizeof(b), "%s %s", str, buf);
1677 errinf(qstate, b);
1678 }
1679