xref: /freebsd/contrib/unbound/util/config_file.c (revision 839529caa9c35f92b638dbe074655598e7a6bb6f)
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*
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->insecure_lan_zones = 0;
214 	cfg->python_script = NULL;
215 	cfg->remote_control_enable = 0;
216 	cfg->control_ifs = NULL;
217 	cfg->control_port = UNBOUND_CONTROL_PORT;
218 	cfg->remote_control_use_cert = 1;
219 	cfg->minimal_responses = 0;
220 	cfg->rrset_roundrobin = 0;
221 	cfg->max_udp_size = 4096;
222 	if(!(cfg->server_key_file = strdup(RUN_DIR"/unbound_server.key")))
223 		goto error_exit;
224 	if(!(cfg->server_cert_file = strdup(RUN_DIR"/unbound_server.pem")))
225 		goto error_exit;
226 	if(!(cfg->control_key_file = strdup(RUN_DIR"/unbound_control.key")))
227 		goto error_exit;
228 	if(!(cfg->control_cert_file = strdup(RUN_DIR"/unbound_control.pem")))
229 		goto error_exit;
230 
231 	if(!(cfg->module_conf = strdup("validator iterator"))) goto error_exit;
232 	if(!(cfg->val_nsec3_key_iterations =
233 		strdup("1024 150 2048 500 4096 2500"))) goto error_exit;
234 #if defined(DNSTAP_SOCKET_PATH)
235 	if(!(cfg->dnstap_socket_path = strdup(DNSTAP_SOCKET_PATH)))
236 		goto error_exit;
237 #endif
238 	cfg->ratelimit = 0;
239 	cfg->ratelimit_slabs = 4;
240 	cfg->ratelimit_size = 4*1024*1024;
241 	cfg->ratelimit_for_domain = NULL;
242 	cfg->ratelimit_below_domain = NULL;
243 	cfg->ratelimit_factor = 10;
244 	cfg->qname_minimisation = 0;
245 	return cfg;
246 error_exit:
247 	config_delete(cfg);
248 	return NULL;
249 }
250 
251 struct config_file* config_create_forlib(void)
252 {
253 	struct config_file* cfg = config_create();
254 	if(!cfg) return NULL;
255 	/* modifications for library use, less verbose, less memory */
256 	free(cfg->chrootdir);
257 	cfg->chrootdir = NULL;
258 	cfg->verbosity = 0;
259 	cfg->outgoing_num_ports = 16; /* in library use, this is 'reasonable'
260 		and probably within the ulimit(maxfds) of the user */
261 	cfg->outgoing_num_tcp = 2;
262 	cfg->msg_cache_size = 1024*1024;
263 	cfg->msg_cache_slabs = 1;
264 	cfg->rrset_cache_size = 1024*1024;
265 	cfg->rrset_cache_slabs = 1;
266 	cfg->infra_cache_slabs = 1;
267 	cfg->use_syslog = 0;
268 	cfg->key_cache_size = 1024*1024;
269 	cfg->key_cache_slabs = 1;
270 	cfg->neg_cache_size = 100 * 1024;
271 	cfg->donotquery_localhost = 0; /* allow, so that you can ask a
272 		forward nameserver running on localhost */
273 	cfg->val_log_level = 2; /* to fill why_bogus with */
274 	cfg->val_log_squelch = 1;
275 	return cfg;
276 }
277 
278 /** check that the value passed is >= 0 */
279 #define IS_NUMBER_OR_ZERO \
280 	if(atoi(val) == 0 && strcmp(val, "0") != 0) return 0
281 /** check that the value passed is > 0 */
282 #define IS_NONZERO_NUMBER \
283 	if(atoi(val) == 0) return 0
284 /** check that the value passed is not 0 and a power of 2 */
285 #define IS_POW2_NUMBER \
286 	if(atoi(val) == 0 || !is_pow2((size_t)atoi(val))) return 0
287 /** check that the value passed is yes or no */
288 #define IS_YES_OR_NO \
289 	if(strcmp(val, "yes") != 0 && strcmp(val, "no") != 0) return 0
290 /** put integer_or_zero into variable */
291 #define S_NUMBER_OR_ZERO(str, var) if(strcmp(opt, str) == 0) \
292 	{ IS_NUMBER_OR_ZERO; cfg->var = atoi(val); }
293 /** put integer_nonzero into variable */
294 #define S_NUMBER_NONZERO(str, var) if(strcmp(opt, str) == 0) \
295 	{ IS_NONZERO_NUMBER; cfg->var = atoi(val); }
296 /** put integer_or_zero into unsigned */
297 #define S_UNSIGNED_OR_ZERO(str, var) if(strcmp(opt, str) == 0) \
298 	{ IS_NUMBER_OR_ZERO; cfg->var = (unsigned)atoi(val); }
299 /** put integer_or_zero into size_t */
300 #define S_SIZET_OR_ZERO(str, var) if(strcmp(opt, str) == 0) \
301 	{ IS_NUMBER_OR_ZERO; cfg->var = (size_t)atoi(val); }
302 /** put integer_nonzero into size_t */
303 #define S_SIZET_NONZERO(str, var) if(strcmp(opt, str) == 0) \
304 	{ IS_NONZERO_NUMBER; cfg->var = (size_t)atoi(val); }
305 /** put yesno into variable */
306 #define S_YNO(str, var) if(strcmp(opt, str) == 0) \
307 	{ IS_YES_OR_NO; cfg->var = (strcmp(val, "yes") == 0); }
308 /** put memsize into variable */
309 #define S_MEMSIZE(str, var) if(strcmp(opt, str)==0) \
310 	{ return cfg_parse_memsize(val, &cfg->var); }
311 /** put pow2 number into variable */
312 #define S_POW2(str, var) if(strcmp(opt, str)==0) \
313 	{ IS_POW2_NUMBER; cfg->var = (size_t)atoi(val); }
314 /** put string into variable */
315 #define S_STR(str, var) if(strcmp(opt, str)==0) \
316 	{ free(cfg->var); return (cfg->var = strdup(val)) != NULL; }
317 /** put string into strlist */
318 #define S_STRLIST(str, var) if(strcmp(opt, str)==0) \
319 	{ return cfg_strlist_insert(&cfg->var, strdup(val)); }
320 
321 int config_set_option(struct config_file* cfg, const char* opt,
322 	const char* val)
323 {
324 	S_NUMBER_OR_ZERO("verbosity:", verbosity)
325 	else if(strcmp(opt, "statistics-interval:") == 0) {
326 		if(strcmp(val, "0") == 0 || strcmp(val, "") == 0)
327 			cfg->stat_interval = 0;
328 		else if(atoi(val) == 0)
329 			return 0;
330 		else cfg->stat_interval = atoi(val);
331 	} else if(strcmp(opt, "num_threads:") == 0) {
332 		/* not supported, library must have 1 thread in bgworker */
333 		return 0;
334 	} else if(strcmp(opt, "outgoing-port-permit:") == 0) {
335 		return cfg_mark_ports(val, 1,
336 			cfg->outgoing_avail_ports, 65536);
337 	} else if(strcmp(opt, "outgoing-port-avoid:") == 0) {
338 		return cfg_mark_ports(val, 0,
339 			cfg->outgoing_avail_ports, 65536);
340 	} else if(strcmp(opt, "local-zone:") == 0) {
341 		return cfg_parse_local_zone(cfg, val);
342 	} else if(strcmp(opt, "val-override-date:") == 0) {
343 		if(strcmp(val, "") == 0 || strcmp(val, "0") == 0) {
344 			cfg->val_date_override = 0;
345 		} else if(strlen(val) == 14) {
346 			cfg->val_date_override = cfg_convert_timeval(val);
347 			return cfg->val_date_override != 0;
348 		} else {
349 			if(atoi(val) == 0) return 0;
350 			cfg->val_date_override = (uint32_t)atoi(val);
351 		}
352 	} else if(strcmp(opt, "local-data-ptr:") == 0) {
353 		char* ptr = cfg_ptr_reverse((char*)opt);
354 		return cfg_strlist_insert(&cfg->local_data, ptr);
355 	} else if(strcmp(opt, "logfile:") == 0) {
356 		cfg->use_syslog = 0;
357 		free(cfg->logfile);
358 		return (cfg->logfile = strdup(val)) != NULL;
359 	}
360 	else if(strcmp(opt, "log-time-ascii:") == 0)
361 	{ IS_YES_OR_NO; cfg->log_time_ascii = (strcmp(val, "yes") == 0);
362 	  log_set_time_asc(cfg->log_time_ascii); }
363 	else S_SIZET_NONZERO("max-udp-size:", max_udp_size)
364 	else S_YNO("use-syslog:", use_syslog)
365 	else S_YNO("extended-statistics:", stat_extended)
366 	else S_YNO("statistics-cumulative:", stat_cumulative)
367 	else S_YNO("do-ip4:", do_ip4)
368 	else S_YNO("do-ip6:", do_ip6)
369 	else S_YNO("do-udp:", do_udp)
370 	else S_YNO("do-tcp:", do_tcp)
371 	else S_YNO("tcp-upstream:", tcp_upstream)
372 	else S_YNO("ssl-upstream:", ssl_upstream)
373 	else S_STR("ssl-service-key:", ssl_service_key)
374 	else S_STR("ssl-service-pem:", ssl_service_pem)
375 	else S_NUMBER_NONZERO("ssl-port:", ssl_port)
376 	else S_YNO("interface-automatic:", if_automatic)
377 	else S_YNO("do-daemonize:", do_daemonize)
378 	else S_NUMBER_NONZERO("port:", port)
379 	else S_NUMBER_NONZERO("outgoing-range:", outgoing_num_ports)
380 	else S_SIZET_OR_ZERO("outgoing-num-tcp:", outgoing_num_tcp)
381 	else S_SIZET_OR_ZERO("incoming-num-tcp:", incoming_num_tcp)
382 	else S_SIZET_NONZERO("edns-buffer-size:", edns_buffer_size)
383 	else S_SIZET_NONZERO("msg-buffer-size:", msg_buffer_size)
384 	else S_MEMSIZE("msg-cache-size:", msg_cache_size)
385 	else S_POW2("msg-cache-slabs:", msg_cache_slabs)
386 	else S_SIZET_NONZERO("num-queries-per-thread:",num_queries_per_thread)
387 	else S_SIZET_OR_ZERO("jostle-timeout:", jostle_time)
388 	else S_MEMSIZE("so-rcvbuf:", so_rcvbuf)
389 	else S_MEMSIZE("so-sndbuf:", so_sndbuf)
390 	else S_YNO("so-reuseport:", so_reuseport)
391 	else S_YNO("ip-transparent:", ip_transparent)
392 	else S_MEMSIZE("rrset-cache-size:", rrset_cache_size)
393 	else S_POW2("rrset-cache-slabs:", rrset_cache_slabs)
394 	else S_YNO("prefetch:", prefetch)
395 	else S_YNO("prefetch-key:", prefetch_key)
396 	else if(strcmp(opt, "cache-max-ttl:") == 0)
397 	{ IS_NUMBER_OR_ZERO; cfg->max_ttl = atoi(val); MAX_TTL=(time_t)cfg->max_ttl;}
398 	else if(strcmp(opt, "cache-max-negative-ttl:") == 0)
399 	{ IS_NUMBER_OR_ZERO; cfg->max_negative_ttl = atoi(val); MAX_NEG_TTL=(time_t)cfg->max_negative_ttl;}
400 	else if(strcmp(opt, "cache-min-ttl:") == 0)
401 	{ IS_NUMBER_OR_ZERO; cfg->min_ttl = atoi(val); MIN_TTL=(time_t)cfg->min_ttl;}
402 	else if(strcmp(opt, "infra-cache-min-rtt:") == 0) {
403 	    IS_NUMBER_OR_ZERO; cfg->infra_cache_min_rtt = atoi(val);
404 	    RTT_MIN_TIMEOUT=cfg->infra_cache_min_rtt;
405 	}
406 	else S_NUMBER_OR_ZERO("infra-host-ttl:", host_ttl)
407 	else S_POW2("infra-cache-slabs:", infra_cache_slabs)
408 	else S_SIZET_NONZERO("infra-cache-numhosts:", infra_cache_numhosts)
409 	else S_NUMBER_OR_ZERO("delay-close:", delay_close)
410 	else S_STR("chroot:", chrootdir)
411 	else S_STR("username:", username)
412 	else S_STR("directory:", directory)
413 	else S_STR("pidfile:", pidfile)
414 	else S_YNO("hide-identity:", hide_identity)
415 	else S_YNO("hide-version:", hide_version)
416 	else S_STR("identity:", identity)
417 	else S_STR("version:", version)
418 	else S_STRLIST("root-hints:", root_hints)
419 	else S_STR("target-fetch-policy:", target_fetch_policy)
420 	else S_YNO("harden-glue:", harden_glue)
421 	else S_YNO("harden-short-bufsize:", harden_short_bufsize)
422 	else S_YNO("harden-large-queries:", harden_large_queries)
423 	else S_YNO("harden-dnssec-stripped:", harden_dnssec_stripped)
424 	else S_YNO("harden-below-nxdomain:", harden_below_nxdomain)
425 	else S_YNO("harden-referral-path:", harden_referral_path)
426 	else S_YNO("harden-algo-downgrade:", harden_algo_downgrade)
427 	else S_YNO("use-caps-for-id", use_caps_bits_for_id)
428 	else S_STRLIST("caps-whitelist:", caps_whitelist)
429 	else S_SIZET_OR_ZERO("unwanted-reply-threshold:", unwanted_threshold)
430 	else S_STRLIST("private-address:", private_address)
431 	else S_STRLIST("private-domain:", private_domain)
432 	else S_YNO("do-not-query-localhost:", donotquery_localhost)
433 	else S_STRLIST("do-not-query-address:", donotqueryaddrs)
434 	else S_STRLIST("auto-trust-anchor-file:", auto_trust_anchor_file_list)
435 	else S_STRLIST("trust-anchor-file:", trust_anchor_file_list)
436 	else S_STRLIST("trust-anchor:", trust_anchor_list)
437 	else S_STRLIST("trusted-keys-file:", trusted_keys_file_list)
438 	else S_STR("dlv-anchor-file:", dlv_anchor_file)
439 	else S_STRLIST("dlv-anchor:", dlv_anchor_list)
440 	else S_STRLIST("domain-insecure:", domain_insecure)
441 	else S_NUMBER_OR_ZERO("val-bogus-ttl:", bogus_ttl)
442 	else S_YNO("val-clean-additional:", val_clean_additional)
443 	else S_NUMBER_OR_ZERO("val-log-level:", val_log_level)
444 	else S_YNO("val-log-squelch:", val_log_squelch)
445 	else S_YNO("log-queries:", log_queries)
446 	else S_YNO("val-permissive-mode:", val_permissive_mode)
447 	else S_YNO("ignore-cd-flag:", ignore_cd)
448 	else S_STR("val-nsec3-keysize-iterations:", val_nsec3_key_iterations)
449 	else S_UNSIGNED_OR_ZERO("add-holddown:", add_holddown)
450 	else S_UNSIGNED_OR_ZERO("del-holddown:", del_holddown)
451 	else S_UNSIGNED_OR_ZERO("keep-missing:", keep_missing)
452 	else if(strcmp(opt, "permit-small-holddown:") == 0)
453 	{ IS_YES_OR_NO; cfg->permit_small_holddown = (strcmp(val, "yes") == 0);
454 	  autr_permit_small_holddown = cfg->permit_small_holddown; }
455 	else S_MEMSIZE("key-cache-size:", key_cache_size)
456 	else S_POW2("key-cache-slabs:", key_cache_slabs)
457 	else S_MEMSIZE("neg-cache-size:", neg_cache_size)
458 	else S_YNO("minimal-responses:", minimal_responses)
459 	else S_YNO("rrset-roundrobin:", rrset_roundrobin)
460 	else S_STRLIST("local-data:", local_data)
461 	else S_YNO("unblock-lan-zones:", unblock_lan_zones)
462 	else S_YNO("insecure-lan-zones:", insecure_lan_zones)
463 	else S_YNO("control-enable:", remote_control_enable)
464 	else S_STRLIST("control-interface:", control_ifs)
465 	else S_NUMBER_NONZERO("control-port:", control_port)
466 	else S_STR("server-key-file:", server_key_file)
467 	else S_STR("server-cert-file:", server_cert_file)
468 	else S_STR("control-key-file:", control_key_file)
469 	else S_STR("control-cert-file:", control_cert_file)
470 	else S_STR("module-config:", module_conf)
471 	else S_STR("python-script:", python_script)
472 	else if(strcmp(opt, "ratelimit:") == 0) {
473 	    IS_NUMBER_OR_ZERO; cfg->ratelimit = atoi(val);
474 	    infra_dp_ratelimit=cfg->ratelimit;
475 	}
476 	else S_MEMSIZE("ratelimit-size:", ratelimit_size)
477 	else S_POW2("ratelimit-slabs:", ratelimit_slabs)
478 	else S_NUMBER_OR_ZERO("ratelimit-factor:", ratelimit_factor)
479 	else S_YNO("qname-minimisation:", qname_minimisation)
480 	/* val_sig_skew_min and max are copied into val_env during init,
481 	 * so this does not update val_env with set_option */
482 	else if(strcmp(opt, "val-sig-skew-min:") == 0)
483 	{ IS_NUMBER_OR_ZERO; cfg->val_sig_skew_min = (int32_t)atoi(val); }
484 	else if(strcmp(opt, "val-sig-skew-max:") == 0)
485 	{ IS_NUMBER_OR_ZERO; cfg->val_sig_skew_max = (int32_t)atoi(val); }
486 	else if (strcmp(opt, "outgoing-interface:") == 0) {
487 		char* d = strdup(val);
488 		char** oi =
489 		(char**)reallocarray(NULL, (size_t)cfg->num_out_ifs+1, sizeof(char*));
490 		if(!d || !oi) { free(d); free(oi); return -1; }
491 		if(cfg->out_ifs && cfg->num_out_ifs) {
492 			memmove(oi, cfg->out_ifs, cfg->num_out_ifs*sizeof(char*));
493 			free(cfg->out_ifs);
494 		}
495 		oi[cfg->num_out_ifs++] = d;
496 		cfg->out_ifs = oi;
497 	} else {
498 		/* unknown or unsupported (from the set_option interface):
499 		 * interface, outgoing-interface, access-control,
500 		 * stub-zone, name, stub-addr, stub-host, stub-prime
501 		 * forward-first, stub-first,
502 		 * forward-zone, name, forward-addr, forward-host,
503 		 * ratelimit-for-domain, ratelimit-below-domain */
504 		return 0;
505 	}
506 	return 1;
507 }
508 
509 void config_print_func(char* line, void* arg)
510 {
511 	FILE* f = (FILE*)arg;
512 	(void)fprintf(f, "%s\n", line);
513 }
514 
515 /** collate func arg */
516 struct config_collate_arg {
517 	/** list of result items */
518 	struct config_strlist_head list;
519 	/** if a malloc error occurred, 0 is OK */
520 	int status;
521 };
522 
523 void config_collate_func(char* line, void* arg)
524 {
525 	struct config_collate_arg* m = (struct config_collate_arg*)arg;
526 	if(m->status)
527 		return;
528 	if(!cfg_strlist_append(&m->list, strdup(line)))
529 		m->status = 1;
530 }
531 
532 int config_get_option_list(struct config_file* cfg, const char* opt,
533 	struct config_strlist** list)
534 {
535 	struct config_collate_arg m;
536 	memset(&m, 0, sizeof(m));
537 	*list = NULL;
538 	if(!config_get_option(cfg, opt, config_collate_func, &m))
539 		return 1;
540 	if(m.status) {
541 		config_delstrlist(m.list.first);
542 		return 2;
543 	}
544 	*list = m.list.first;
545 	return 0;
546 }
547 
548 int
549 config_get_option_collate(struct config_file* cfg, const char* opt, char** str)
550 {
551 	struct config_strlist* list = NULL;
552 	int r;
553 	*str = NULL;
554 	if((r = config_get_option_list(cfg, opt, &list)) != 0)
555 		return r;
556 	*str = config_collate_cat(list);
557 	config_delstrlist(list);
558 	if(!*str) return 2;
559 	return 0;
560 }
561 
562 char*
563 config_collate_cat(struct config_strlist* list)
564 {
565 	size_t total = 0, left;
566 	struct config_strlist* s;
567 	char *r, *w;
568 	if(!list) /* no elements */
569 		return strdup("");
570 	if(list->next == NULL) /* one element , no newline at end. */
571 		return strdup(list->str);
572 	/* count total length */
573 	for(s=list; s; s=s->next)
574 		total += strlen(s->str) + 1; /* len + newline */
575 	left = total+1; /* one extra for nul at end */
576 	r = malloc(left);
577 	if(!r)
578 		return NULL;
579 	w = r;
580 	for(s=list; s; s=s->next) {
581 		size_t this = strlen(s->str);
582 		if(this+2 > left) { /* sanity check */
583 			free(r);
584 			return NULL;
585 		}
586 		snprintf(w, left, "%s\n", s->str);
587 		this = strlen(w);
588 		w += this;
589 		left -= this;
590 	}
591 	return r;
592 }
593 
594 /** compare and print decimal option */
595 #define O_DEC(opt, str, var) if(strcmp(opt, str)==0) \
596 	{snprintf(buf, len, "%d", (int)cfg->var); \
597 	func(buf, arg);}
598 /** compare and print unsigned option */
599 #define O_UNS(opt, str, var) if(strcmp(opt, str)==0) \
600 	{snprintf(buf, len, "%u", (unsigned)cfg->var); \
601 	func(buf, arg);}
602 /** compare and print yesno option */
603 #define O_YNO(opt, str, var) if(strcmp(opt, str)==0) \
604 	{func(cfg->var?"yes":"no", arg);}
605 /** compare and print string option */
606 #define O_STR(opt, str, var) if(strcmp(opt, str)==0) \
607 	{func(cfg->var?cfg->var:"", arg);}
608 /** compare and print array option */
609 #define O_IFC(opt, str, num, arr) if(strcmp(opt, str)==0) \
610 	{int i; for(i=0; i<cfg->num; i++) func(cfg->arr[i], arg);}
611 /** compare and print memorysize option */
612 #define O_MEM(opt, str, var) if(strcmp(opt, str)==0) { \
613 	if(cfg->var > 1024*1024*1024) {	\
614 	  size_t f=cfg->var/(size_t)1000000, b=cfg->var%(size_t)1000000; \
615 	  snprintf(buf, len, "%u%6.6u", (unsigned)f, (unsigned)b); \
616 	} else snprintf(buf, len, "%u", (unsigned)cfg->var); \
617 	func(buf, arg);}
618 /** compare and print list option */
619 #define O_LST(opt, name, lst) if(strcmp(opt, name)==0) { \
620 	struct config_strlist* p = cfg->lst; \
621 	for(p = cfg->lst; p; p = p->next) \
622 		func(p->str, arg); \
623 	}
624 /** compare and print list option */
625 #define O_LS2(opt, name, lst) if(strcmp(opt, name)==0) { \
626 	struct config_str2list* p = cfg->lst; \
627 	for(p = cfg->lst; p; p = p->next) \
628 		snprintf(buf, len, "%s %s\n", p->str, p->str2); \
629 		func(buf, arg); \
630 	}
631 
632 int
633 config_get_option(struct config_file* cfg, const char* opt,
634 	void (*func)(char*,void*), void* arg)
635 {
636 	char buf[1024];
637 	size_t len = sizeof(buf);
638 	fptr_ok(fptr_whitelist_print_func(func));
639 	O_DEC(opt, "verbosity", verbosity)
640 	else O_DEC(opt, "statistics-interval", stat_interval)
641 	else O_YNO(opt, "statistics-cumulative", stat_cumulative)
642 	else O_YNO(opt, "extended-statistics", stat_extended)
643 	else O_YNO(opt, "use-syslog", use_syslog)
644 	else O_YNO(opt, "log-time-ascii", log_time_ascii)
645 	else O_DEC(opt, "num-threads", num_threads)
646 	else O_IFC(opt, "interface", num_ifs, ifs)
647 	else O_IFC(opt, "outgoing-interface", num_out_ifs, out_ifs)
648 	else O_YNO(opt, "interface-automatic", if_automatic)
649 	else O_DEC(opt, "port", port)
650 	else O_DEC(opt, "outgoing-range", outgoing_num_ports)
651 	else O_DEC(opt, "outgoing-num-tcp", outgoing_num_tcp)
652 	else O_DEC(opt, "incoming-num-tcp", incoming_num_tcp)
653 	else O_DEC(opt, "edns-buffer-size", edns_buffer_size)
654 	else O_DEC(opt, "msg-buffer-size", msg_buffer_size)
655 	else O_MEM(opt, "msg-cache-size", msg_cache_size)
656 	else O_DEC(opt, "msg-cache-slabs", msg_cache_slabs)
657 	else O_DEC(opt, "num-queries-per-thread", num_queries_per_thread)
658 	else O_UNS(opt, "jostle-timeout", jostle_time)
659 	else O_MEM(opt, "so-rcvbuf", so_rcvbuf)
660 	else O_MEM(opt, "so-sndbuf", so_sndbuf)
661 	else O_YNO(opt, "so-reuseport", so_reuseport)
662 	else O_YNO(opt, "ip-transparent", ip_transparent)
663 	else O_MEM(opt, "rrset-cache-size", rrset_cache_size)
664 	else O_DEC(opt, "rrset-cache-slabs", rrset_cache_slabs)
665 	else O_YNO(opt, "prefetch-key", prefetch_key)
666 	else O_YNO(opt, "prefetch", prefetch)
667 	else O_DEC(opt, "cache-max-ttl", max_ttl)
668 	else O_DEC(opt, "cache-max-negative-ttl", max_negative_ttl)
669 	else O_DEC(opt, "cache-min-ttl", min_ttl)
670 	else O_DEC(opt, "infra-host-ttl", host_ttl)
671 	else O_DEC(opt, "infra-cache-slabs", infra_cache_slabs)
672 	else O_DEC(opt, "infra-cache-min-rtt", infra_cache_min_rtt)
673 	else O_MEM(opt, "infra-cache-numhosts", infra_cache_numhosts)
674 	else O_UNS(opt, "delay-close", delay_close)
675 	else O_YNO(opt, "do-ip4", do_ip4)
676 	else O_YNO(opt, "do-ip6", do_ip6)
677 	else O_YNO(opt, "do-udp", do_udp)
678 	else O_YNO(opt, "do-tcp", do_tcp)
679 	else O_YNO(opt, "tcp-upstream", tcp_upstream)
680 	else O_YNO(opt, "ssl-upstream", ssl_upstream)
681 	else O_STR(opt, "ssl-service-key", ssl_service_key)
682 	else O_STR(opt, "ssl-service-pem", ssl_service_pem)
683 	else O_DEC(opt, "ssl-port", ssl_port)
684 	else O_YNO(opt, "do-daemonize", do_daemonize)
685 	else O_STR(opt, "chroot", chrootdir)
686 	else O_STR(opt, "username", username)
687 	else O_STR(opt, "directory", directory)
688 	else O_STR(opt, "logfile", logfile)
689 	else O_YNO(opt, "log-queries", log_queries)
690 	else O_STR(opt, "pidfile", pidfile)
691 	else O_YNO(opt, "hide-identity", hide_identity)
692 	else O_YNO(opt, "hide-version", hide_version)
693 	else O_STR(opt, "identity", identity)
694 	else O_STR(opt, "version", version)
695 	else O_STR(opt, "target-fetch-policy", target_fetch_policy)
696 	else O_YNO(opt, "harden-short-bufsize", harden_short_bufsize)
697 	else O_YNO(opt, "harden-large-queries", harden_large_queries)
698 	else O_YNO(opt, "harden-glue", harden_glue)
699 	else O_YNO(opt, "harden-dnssec-stripped", harden_dnssec_stripped)
700 	else O_YNO(opt, "harden-below-nxdomain", harden_below_nxdomain)
701 	else O_YNO(opt, "harden-referral-path", harden_referral_path)
702 	else O_YNO(opt, "harden-algo-downgrade", harden_algo_downgrade)
703 	else O_YNO(opt, "use-caps-for-id", use_caps_bits_for_id)
704 	else O_LST(opt, "caps-whitelist", caps_whitelist)
705 	else O_DEC(opt, "unwanted-reply-threshold", unwanted_threshold)
706 	else O_YNO(opt, "do-not-query-localhost", donotquery_localhost)
707 	else O_STR(opt, "module-config", module_conf)
708 	else O_STR(opt, "dlv-anchor-file", dlv_anchor_file)
709 	else O_DEC(opt, "val-bogus-ttl", bogus_ttl)
710 	else O_YNO(opt, "val-clean-additional", val_clean_additional)
711 	else O_DEC(opt, "val-log-level", val_log_level)
712 	else O_YNO(opt, "val-permissive-mode", val_permissive_mode)
713 	else O_YNO(opt, "ignore-cd-flag", ignore_cd)
714 	else O_STR(opt, "val-nsec3-keysize-iterations",val_nsec3_key_iterations)
715 	else O_UNS(opt, "add-holddown", add_holddown)
716 	else O_UNS(opt, "del-holddown", del_holddown)
717 	else O_UNS(opt, "keep-missing", keep_missing)
718 	else O_YNO(opt, "permit-small-holddown", permit_small_holddown)
719 	else O_MEM(opt, "key-cache-size", key_cache_size)
720 	else O_DEC(opt, "key-cache-slabs", key_cache_slabs)
721 	else O_MEM(opt, "neg-cache-size", neg_cache_size)
722 	else O_YNO(opt, "control-enable", remote_control_enable)
723 	else O_DEC(opt, "control-port", control_port)
724 	else O_STR(opt, "server-key-file", server_key_file)
725 	else O_STR(opt, "server-cert-file", server_cert_file)
726 	else O_STR(opt, "control-key-file", control_key_file)
727 	else O_STR(opt, "control-cert-file", control_cert_file)
728 	else O_LST(opt, "root-hints", root_hints)
729 	else O_LS2(opt, "access-control", acls)
730 	else O_LST(opt, "do-not-query-address", donotqueryaddrs)
731 	else O_LST(opt, "private-address", private_address)
732 	else O_LST(opt, "private-domain", private_domain)
733 	else O_LST(opt, "auto-trust-anchor-file", auto_trust_anchor_file_list)
734 	else O_LST(opt, "trust-anchor-file", trust_anchor_file_list)
735 	else O_LST(opt, "trust-anchor", trust_anchor_list)
736 	else O_LST(opt, "trusted-keys-file", trusted_keys_file_list)
737 	else O_LST(opt, "dlv-anchor", dlv_anchor_list)
738 	else O_LST(opt, "control-interface", control_ifs)
739 	else O_LST(opt, "domain-insecure", domain_insecure)
740 	else O_UNS(opt, "val-override-date", val_date_override)
741 	else O_YNO(opt, "minimal-responses", minimal_responses)
742 	else O_YNO(opt, "rrset-roundrobin", rrset_roundrobin)
743 	else O_YNO(opt, "unblock-lan-zones", unblock_lan_zones)
744 	else O_YNO(opt, "insecure-lan-zones", insecure_lan_zones)
745 	else O_DEC(opt, "max-udp-size", max_udp_size)
746 	else O_STR(opt, "python-script", python_script)
747 	else O_DEC(opt, "ratelimit", ratelimit)
748 	else O_MEM(opt, "ratelimit-size", ratelimit_size)
749 	else O_DEC(opt, "ratelimit-slabs", ratelimit_slabs)
750 	else O_LS2(opt, "ratelimit-for-domain", ratelimit_for_domain)
751 	else O_LS2(opt, "ratelimit-below-domain", ratelimit_below_domain)
752 	else O_DEC(opt, "ratelimit-factor", ratelimit_factor)
753 	else O_DEC(opt, "val-sig-skew-min", val_sig_skew_min)
754 	else O_DEC(opt, "val-sig-skew-max", val_sig_skew_max)
755 	else O_YNO(opt, "qname-minimisation", qname_minimisation)
756 	/* not here:
757 	 * outgoing-permit, outgoing-avoid - have list of ports
758 	 * local-zone - zones and nodefault variables
759 	 * local-data - see below
760 	 * local-data-ptr - converted to local-data entries
761 	 * stub-zone, name, stub-addr, stub-host, stub-prime
762 	 * forward-zone, name, forward-addr, forward-host
763 	 */
764 	else return 0;
765 	return 1;
766 }
767 
768 /** initialize the global cfg_parser object */
769 static void
770 create_cfg_parser(struct config_file* cfg, char* filename, const char* chroot)
771 {
772 	static struct config_parser_state st;
773 	cfg_parser = &st;
774 	cfg_parser->filename = filename;
775 	cfg_parser->line = 1;
776 	cfg_parser->errors = 0;
777 	cfg_parser->cfg = cfg;
778 	cfg_parser->chroot = chroot;
779 	init_cfg_parse();
780 }
781 
782 int
783 config_read(struct config_file* cfg, const char* filename, const char* chroot)
784 {
785 	FILE *in;
786 	char *fname = (char*)filename;
787 #ifdef HAVE_GLOB
788 	glob_t g;
789 	size_t i;
790 	int r, flags;
791 #endif
792 	if(!fname)
793 		return 1;
794 
795 	/* check for wildcards */
796 #ifdef HAVE_GLOB
797 	if(!(!strchr(fname, '*') && !strchr(fname, '?') && !strchr(fname, '[') &&
798 		!strchr(fname, '{') && !strchr(fname, '~'))) {
799 		verbose(VERB_QUERY, "wildcard found, processing %s", fname);
800 		flags = 0
801 #ifdef GLOB_ERR
802 			| GLOB_ERR
803 #endif
804 #ifdef GLOB_NOSORT
805 			| GLOB_NOSORT
806 #endif
807 #ifdef GLOB_BRACE
808 			| GLOB_BRACE
809 #endif
810 #ifdef GLOB_TILDE
811 			| GLOB_TILDE
812 #endif
813 		;
814 		memset(&g, 0, sizeof(g));
815 		r = glob(fname, flags, NULL, &g);
816 		if(r) {
817 			/* some error */
818 			globfree(&g);
819 			if(r == GLOB_NOMATCH) {
820 				verbose(VERB_QUERY, "include: "
821 				"no matches for %s", fname);
822 				return 1;
823 			} else if(r == GLOB_NOSPACE) {
824 				log_err("include: %s: "
825 					"fnametern out of memory", fname);
826 			} else if(r == GLOB_ABORTED) {
827 				log_err("wildcard include: %s: expansion "
828 					"aborted (%s)", fname, strerror(errno));
829 			} else {
830 				log_err("wildcard include: %s: expansion "
831 					"failed (%s)", fname, strerror(errno));
832 			}
833 			/* ignore globs that yield no files */
834 			return 1;
835 		}
836 		/* process files found, if any */
837 		for(i=0; i<(size_t)g.gl_pathc; i++) {
838 			if(!config_read(cfg, g.gl_pathv[i], chroot)) {
839 				log_err("error reading wildcard "
840 					"include: %s", g.gl_pathv[i]);
841 				globfree(&g);
842 				return 0;
843 			}
844 		}
845 		globfree(&g);
846 		return 1;
847 	}
848 #endif /* HAVE_GLOB */
849 
850 	in = fopen(fname, "r");
851 	if(!in) {
852 		log_err("Could not open %s: %s", fname, strerror(errno));
853 		return 0;
854 	}
855 	create_cfg_parser(cfg, fname, chroot);
856 	ub_c_in = in;
857 	ub_c_parse();
858 	fclose(in);
859 
860 	if(cfg_parser->errors != 0) {
861 		fprintf(stderr, "read %s failed: %d errors in configuration file\n",
862 			fname, cfg_parser->errors);
863 		errno=EINVAL;
864 		return 0;
865 	}
866 
867 	return 1;
868 }
869 
870 void
871 config_delstrlist(struct config_strlist* p)
872 {
873 	struct config_strlist *np;
874 	while(p) {
875 		np = p->next;
876 		free(p->str);
877 		free(p);
878 		p = np;
879 	}
880 }
881 
882 void
883 config_deldblstrlist(struct config_str2list* p)
884 {
885 	struct config_str2list *np;
886 	while(p) {
887 		np = p->next;
888 		free(p->str);
889 		free(p->str2);
890 		free(p);
891 		p = np;
892 	}
893 }
894 
895 void
896 config_delstubs(struct config_stub* p)
897 {
898 	struct config_stub* np;
899 	while(p) {
900 		np = p->next;
901 		free(p->name);
902 		config_delstrlist(p->hosts);
903 		config_delstrlist(p->addrs);
904 		free(p);
905 		p = np;
906 	}
907 }
908 
909 void
910 config_delete(struct config_file* cfg)
911 {
912 	if(!cfg) return;
913 	free(cfg->username);
914 	free(cfg->chrootdir);
915 	free(cfg->directory);
916 	free(cfg->logfile);
917 	free(cfg->pidfile);
918 	free(cfg->target_fetch_policy);
919 	free(cfg->ssl_service_key);
920 	free(cfg->ssl_service_pem);
921 	if(cfg->ifs) {
922 		int i;
923 		for(i=0; i<cfg->num_ifs; i++)
924 			free(cfg->ifs[i]);
925 		free(cfg->ifs);
926 	}
927 	if(cfg->out_ifs) {
928 		int i;
929 		for(i=0; i<cfg->num_out_ifs; i++)
930 			free(cfg->out_ifs[i]);
931 		free(cfg->out_ifs);
932 	}
933 	config_delstubs(cfg->stubs);
934 	config_delstubs(cfg->forwards);
935 	config_delstrlist(cfg->donotqueryaddrs);
936 	config_delstrlist(cfg->root_hints);
937 	free(cfg->identity);
938 	free(cfg->version);
939 	free(cfg->module_conf);
940 	free(cfg->outgoing_avail_ports);
941 	config_delstrlist(cfg->caps_whitelist);
942 	config_delstrlist(cfg->private_address);
943 	config_delstrlist(cfg->private_domain);
944 	config_delstrlist(cfg->auto_trust_anchor_file_list);
945 	config_delstrlist(cfg->trust_anchor_file_list);
946 	config_delstrlist(cfg->trusted_keys_file_list);
947 	config_delstrlist(cfg->trust_anchor_list);
948 	config_delstrlist(cfg->domain_insecure);
949 	free(cfg->dlv_anchor_file);
950 	config_delstrlist(cfg->dlv_anchor_list);
951 	config_deldblstrlist(cfg->acls);
952 	free(cfg->val_nsec3_key_iterations);
953 	config_deldblstrlist(cfg->local_zones);
954 	config_delstrlist(cfg->local_zones_nodefault);
955 	config_delstrlist(cfg->local_data);
956 	config_delstrlist(cfg->control_ifs);
957 	free(cfg->server_key_file);
958 	free(cfg->server_cert_file);
959 	free(cfg->control_key_file);
960 	free(cfg->control_cert_file);
961 	free(cfg->dns64_prefix);
962 	free(cfg->dnstap_socket_path);
963 	free(cfg->dnstap_identity);
964 	free(cfg->dnstap_version);
965 	config_deldblstrlist(cfg->ratelimit_for_domain);
966 	config_deldblstrlist(cfg->ratelimit_below_domain);
967 	free(cfg);
968 }
969 
970 static void
971 init_outgoing_availports(int* a, int num)
972 {
973 	/* generated with make iana_update */
974 	const int iana_assigned[] = {
975 #include "util/iana_ports.inc"
976 		-1 }; /* end marker to put behind trailing comma */
977 
978 	int i;
979 	/* do not use <1024, that could be trouble with the system, privs */
980 	for(i=1024; i<num; i++) {
981 		a[i] = i;
982 	}
983 	/* create empty spot at 49152 to keep ephemeral ports available
984 	 * to other programs */
985 	for(i=49152; i<49152+256; i++)
986 		a[i] = 0;
987 	/* pick out all the IANA assigned ports */
988 	for(i=0; iana_assigned[i]!=-1; i++) {
989 		if(iana_assigned[i] < num)
990 			a[iana_assigned[i]] = 0;
991 	}
992 }
993 
994 int
995 cfg_mark_ports(const char* str, int allow, int* avail, int num)
996 {
997 	char* mid = strchr(str, '-');
998 	if(!mid) {
999 		int port = atoi(str);
1000 		if(port == 0 && strcmp(str, "0") != 0) {
1001 			log_err("cannot parse port number '%s'", str);
1002 			return 0;
1003 		}
1004 		if(port < num)
1005 			avail[port] = (allow?port:0);
1006 	} else {
1007 		int i, low, high = atoi(mid+1);
1008 		char buf[16];
1009 		if(high == 0 && strcmp(mid+1, "0") != 0) {
1010 			log_err("cannot parse port number '%s'", mid+1);
1011 			return 0;
1012 		}
1013 		if( (int)(mid-str)+1 >= (int)sizeof(buf) ) {
1014 			log_err("cannot parse port number '%s'", str);
1015 			return 0;
1016 		}
1017 		if(mid > str)
1018 			memcpy(buf, str, (size_t)(mid-str));
1019 		buf[mid-str] = 0;
1020 		low = atoi(buf);
1021 		if(low == 0 && strcmp(buf, "0") != 0) {
1022 			log_err("cannot parse port number '%s'", buf);
1023 			return 0;
1024 		}
1025 		for(i=low; i<=high; i++) {
1026 			if(i < num)
1027 				avail[i] = (allow?i:0);
1028 		}
1029 		return 1;
1030 	}
1031 	return 1;
1032 }
1033 
1034 int
1035 cfg_scan_ports(int* avail, int num)
1036 {
1037 	int i;
1038 	int count = 0;
1039 	for(i=0; i<num; i++) {
1040 		if(avail[i])
1041 			count++;
1042 	}
1043 	return count;
1044 }
1045 
1046 int cfg_condense_ports(struct config_file* cfg, int** avail)
1047 {
1048 	int num = cfg_scan_ports(cfg->outgoing_avail_ports, 65536);
1049 	int i, at = 0;
1050 	*avail = NULL;
1051 	if(num == 0)
1052 		return 0;
1053 	*avail = (int*)reallocarray(NULL, (size_t)num, sizeof(int));
1054 	if(!*avail)
1055 		return 0;
1056 	for(i=0; i<65536; i++) {
1057 		if(cfg->outgoing_avail_ports[i])
1058 			(*avail)[at++] = cfg->outgoing_avail_ports[i];
1059 	}
1060 	log_assert(at == num);
1061 	return num;
1062 }
1063 
1064 /** print error with file and line number */
1065 static void ub_c_error_va_list(const char *fmt, va_list args)
1066 {
1067 	cfg_parser->errors++;
1068 	fprintf(stderr, "%s:%d: error: ", cfg_parser->filename,
1069 	cfg_parser->line);
1070 	vfprintf(stderr, fmt, args);
1071 	fprintf(stderr, "\n");
1072 }
1073 
1074 /** print error with file and line number */
1075 void ub_c_error_msg(const char* fmt, ...)
1076 {
1077 	va_list args;
1078 	va_start(args, fmt);
1079 	ub_c_error_va_list(fmt, args);
1080 	va_end(args);
1081 }
1082 
1083 void ub_c_error(const char *str)
1084 {
1085 	cfg_parser->errors++;
1086 	fprintf(stderr, "%s:%d: error: %s\n", cfg_parser->filename,
1087 		cfg_parser->line, str);
1088 }
1089 
1090 int ub_c_wrap(void)
1091 {
1092 	return 1;
1093 }
1094 
1095 int cfg_strlist_append(struct config_strlist_head* list, char* item)
1096 {
1097 	struct config_strlist *s;
1098 	if(!item || !list)
1099 		return 0;
1100 	s = (struct config_strlist*)calloc(1, sizeof(struct config_strlist));
1101 	if(!s)
1102 		return 0;
1103 	s->str = item;
1104 	s->next = NULL;
1105 	if(list->last)
1106 		list->last->next = s;
1107 	else
1108 		list->first = s;
1109 	list->last = s;
1110 	return 1;
1111 }
1112 
1113 int
1114 cfg_strlist_insert(struct config_strlist** head, char* item)
1115 {
1116 	struct config_strlist *s;
1117 	if(!item || !head)
1118 		return 0;
1119 	s = (struct config_strlist*)calloc(1, sizeof(struct config_strlist));
1120 	if(!s)
1121 		return 0;
1122 	s->str = item;
1123 	s->next = *head;
1124 	*head = s;
1125 	return 1;
1126 }
1127 
1128 int
1129 cfg_str2list_insert(struct config_str2list** head, char* item, char* i2)
1130 {
1131 	struct config_str2list *s;
1132 	if(!item || !i2 || !head)
1133 		return 0;
1134 	s = (struct config_str2list*)calloc(1, sizeof(struct config_str2list));
1135 	if(!s)
1136 		return 0;
1137 	s->str = item;
1138 	s->str2 = i2;
1139 	s->next = *head;
1140 	*head = s;
1141 	return 1;
1142 }
1143 
1144 time_t
1145 cfg_convert_timeval(const char* str)
1146 {
1147 	time_t t;
1148 	struct tm tm;
1149 	memset(&tm, 0, sizeof(tm));
1150 	if(strlen(str) < 14)
1151 		return 0;
1152 	if(sscanf(str, "%4d%2d%2d%2d%2d%2d", &tm.tm_year, &tm.tm_mon,
1153 		&tm.tm_mday, &tm.tm_hour, &tm.tm_min, &tm.tm_sec) != 6)
1154 		return 0;
1155 	tm.tm_year -= 1900;
1156 	tm.tm_mon--;
1157 	/* Check values */
1158 	if (tm.tm_year < 70)	return 0;
1159 	if (tm.tm_mon < 0 || tm.tm_mon > 11)	return 0;
1160 	if (tm.tm_mday < 1 || tm.tm_mday > 31) 	return 0;
1161 	if (tm.tm_hour < 0 || tm.tm_hour > 23)	return 0;
1162 	if (tm.tm_min < 0 || tm.tm_min > 59)	return 0;
1163 	if (tm.tm_sec < 0 || tm.tm_sec > 59)	return 0;
1164 	/* call ldns conversion function */
1165 	t = sldns_mktime_from_utc(&tm);
1166 	return t;
1167 }
1168 
1169 int
1170 cfg_count_numbers(const char* s)
1171 {
1172 	/* format ::= (sp num)+ sp  */
1173 	/* num ::= [-](0-9)+        */
1174 	/* sp ::= (space|tab)*      */
1175 	int num = 0;
1176 	while(*s) {
1177 		while(*s && isspace((unsigned char)*s))
1178 			s++;
1179 		if(!*s) /* end of string */
1180 			break;
1181 		if(*s == '-')
1182 			s++;
1183 		if(!*s) /* only - not allowed */
1184 			return 0;
1185 		if(!isdigit((unsigned char)*s)) /* bad character */
1186 			return 0;
1187 		while(*s && isdigit((unsigned char)*s))
1188 			s++;
1189 		num++;
1190 	}
1191 	return num;
1192 }
1193 
1194 /** all digit number */
1195 static int isalldigit(const char* str, size_t l)
1196 {
1197 	size_t i;
1198 	for(i=0; i<l; i++)
1199 		if(!isdigit((unsigned char)str[i]))
1200 			return 0;
1201 	return 1;
1202 }
1203 
1204 int
1205 cfg_parse_memsize(const char* str, size_t* res)
1206 {
1207 	size_t len;
1208 	size_t mult = 1;
1209 	if(!str || (len=(size_t)strlen(str)) == 0) {
1210 		log_err("not a size: '%s'", str);
1211 		return 0;
1212 	}
1213 	if(isalldigit(str, len)) {
1214 		*res = (size_t)atol(str);
1215 		return 1;
1216 	}
1217 	/* check appended num */
1218 	while(len>0 && str[len-1]==' ')
1219 		len--;
1220 	if(len > 1 && str[len-1] == 'b')
1221 		len--;
1222 	else if(len > 1 && str[len-1] == 'B')
1223 		len--;
1224 
1225 	if(len > 1 && tolower((unsigned char)str[len-1]) == 'g')
1226 		mult = 1024*1024*1024;
1227 	else if(len > 1 && tolower((unsigned char)str[len-1]) == 'm')
1228 		mult = 1024*1024;
1229 	else if(len > 1 && tolower((unsigned char)str[len-1]) == 'k')
1230 		mult = 1024;
1231 	else if(len > 0 && isdigit((unsigned char)str[len-1]))
1232 		mult = 1;
1233 	else {
1234 		log_err("unknown size specifier: '%s'", str);
1235 		return 0;
1236 	}
1237 	while(len>1 && str[len-2]==' ')
1238 		len--;
1239 
1240 	if(!isalldigit(str, len-1)) {
1241 		log_err("unknown size specifier: '%s'", str);
1242 		return 0;
1243 	}
1244 	*res = ((size_t)atol(str)) * mult;
1245 	return 1;
1246 }
1247 
1248 void
1249 config_apply(struct config_file* config)
1250 {
1251 	MAX_TTL = (time_t)config->max_ttl;
1252 	MIN_TTL = (time_t)config->min_ttl;
1253 	MAX_NEG_TTL = (time_t)config->max_negative_ttl;
1254 	RTT_MIN_TIMEOUT = config->infra_cache_min_rtt;
1255 	EDNS_ADVERTISED_SIZE = (uint16_t)config->edns_buffer_size;
1256 	MINIMAL_RESPONSES = config->minimal_responses;
1257 	RRSET_ROUNDROBIN = config->rrset_roundrobin;
1258 	log_set_time_asc(config->log_time_ascii);
1259 	autr_permit_small_holddown = config->permit_small_holddown;
1260 }
1261 
1262 void config_lookup_uid(struct config_file* cfg)
1263 {
1264 #ifdef HAVE_GETPWNAM
1265 	/* translate username into uid and gid */
1266 	if(cfg->username && cfg->username[0]) {
1267 		struct passwd *pwd;
1268 		if((pwd = getpwnam(cfg->username)) != NULL) {
1269 			cfg_uid = pwd->pw_uid;
1270 			cfg_gid = pwd->pw_gid;
1271 		}
1272 	}
1273 #else
1274 	(void)cfg;
1275 #endif
1276 }
1277 
1278 /**
1279  * Calculate string length of full pathname in original filesys
1280  * @param fname: the path name to convert.
1281  * 	Must not be null or empty.
1282  * @param cfg: config struct for chroot and chdir (if set).
1283  * @param use_chdir: if false, only chroot is applied.
1284  * @return length of string.
1285  *	remember to allocate one more for 0 at end in mallocs.
1286  */
1287 static size_t
1288 strlen_after_chroot(const char* fname, struct config_file* cfg, int use_chdir)
1289 {
1290 	size_t len = 0;
1291 	int slashit = 0;
1292 	if(cfg->chrootdir && cfg->chrootdir[0] &&
1293 		strncmp(cfg->chrootdir, fname, strlen(cfg->chrootdir)) == 0) {
1294 		/* already full pathname, return it */
1295 		return strlen(fname);
1296 	}
1297 	/* chroot */
1298 	if(cfg->chrootdir && cfg->chrootdir[0]) {
1299 		/* start with chrootdir */
1300 		len += strlen(cfg->chrootdir);
1301 		slashit = 1;
1302 	}
1303 	/* chdir */
1304 #ifdef UB_ON_WINDOWS
1305 	if(fname[0] != 0 && fname[1] == ':') {
1306 		/* full path, no chdir */
1307 	} else
1308 #endif
1309 	if(fname[0] == '/' || !use_chdir) {
1310 		/* full path, no chdir */
1311 	} else if(cfg->directory && cfg->directory[0]) {
1312 		/* prepend chdir */
1313 		if(slashit && cfg->directory[0] != '/')
1314 			len++;
1315 		if(cfg->chrootdir && cfg->chrootdir[0] &&
1316 			strncmp(cfg->chrootdir, cfg->directory,
1317 			strlen(cfg->chrootdir)) == 0)
1318 			len += strlen(cfg->directory)-strlen(cfg->chrootdir);
1319 		else	len += strlen(cfg->directory);
1320 		slashit = 1;
1321 	}
1322 	/* fname */
1323 	if(slashit && fname[0] != '/')
1324 		len++;
1325 	len += strlen(fname);
1326 	return len;
1327 }
1328 
1329 char*
1330 fname_after_chroot(const char* fname, struct config_file* cfg, int use_chdir)
1331 {
1332 	size_t len = strlen_after_chroot(fname, cfg, use_chdir)+1;
1333 	int slashit = 0;
1334 	char* buf = (char*)malloc(len);
1335 	if(!buf)
1336 		return NULL;
1337 	buf[0] = 0;
1338 	/* is fname already in chroot ? */
1339 	if(cfg->chrootdir && cfg->chrootdir[0] &&
1340 		strncmp(cfg->chrootdir, fname, strlen(cfg->chrootdir)) == 0) {
1341 		/* already full pathname, return it */
1342 		(void)strlcpy(buf, fname, len);
1343 		buf[len-1] = 0;
1344 		return buf;
1345 	}
1346 	/* chroot */
1347 	if(cfg->chrootdir && cfg->chrootdir[0]) {
1348 		/* start with chrootdir */
1349 		(void)strlcpy(buf, cfg->chrootdir, len);
1350 		slashit = 1;
1351 	}
1352 #ifdef UB_ON_WINDOWS
1353 	if(fname[0] != 0 && fname[1] == ':') {
1354 		/* full path, no chdir */
1355 	} else
1356 #endif
1357 	/* chdir */
1358 	if(fname[0] == '/' || !use_chdir) {
1359 		/* full path, no chdir */
1360 	} else if(cfg->directory && cfg->directory[0]) {
1361 		/* prepend chdir */
1362 		if(slashit && cfg->directory[0] != '/')
1363 			(void)strlcat(buf, "/", len);
1364 		/* is the directory already in the chroot? */
1365 		if(cfg->chrootdir && cfg->chrootdir[0] &&
1366 			strncmp(cfg->chrootdir, cfg->directory,
1367 			strlen(cfg->chrootdir)) == 0)
1368 			(void)strlcat(buf, cfg->directory+strlen(cfg->chrootdir),
1369 				   len);
1370 		else (void)strlcat(buf, cfg->directory, len);
1371 		slashit = 1;
1372 	}
1373 	/* fname */
1374 	if(slashit && fname[0] != '/')
1375 		(void)strlcat(buf, "/", len);
1376 	(void)strlcat(buf, fname, len);
1377 	buf[len-1] = 0;
1378 	return buf;
1379 }
1380 
1381 /** return next space character in string */
1382 static char* next_space_pos(const char* str)
1383 {
1384 	char* sp = strchr(str, ' ');
1385 	char* tab = strchr(str, '\t');
1386 	if(!tab && !sp)
1387 		return NULL;
1388 	if(!sp) return tab;
1389 	if(!tab) return sp;
1390 	return (sp<tab)?sp:tab;
1391 }
1392 
1393 /** return last space character in string */
1394 static char* last_space_pos(const char* str)
1395 {
1396 	char* sp = strrchr(str, ' ');
1397 	char* tab = strrchr(str, '\t');
1398 	if(!tab && !sp)
1399 		return NULL;
1400 	if(!sp) return tab;
1401 	if(!tab) return sp;
1402 	return (sp>tab)?sp:tab;
1403 }
1404 
1405 int
1406 cfg_parse_local_zone(struct config_file* cfg, const char* val)
1407 {
1408 	const char *type, *name_end, *name;
1409 	char buf[256];
1410 
1411 	/* parse it as: [zone_name] [between stuff] [zone_type] */
1412 	name = val;
1413 	while(*name && isspace((unsigned char)*name))
1414 		name++;
1415 	if(!*name) {
1416 		log_err("syntax error: too short: %s", val);
1417 		return 0;
1418 	}
1419 	name_end = next_space_pos(name);
1420 	if(!name_end || !*name_end) {
1421 		log_err("syntax error: expected zone type: %s", val);
1422 		return 0;
1423 	}
1424 	if (name_end - name > 255) {
1425 		log_err("syntax error: bad zone name: %s", val);
1426 		return 0;
1427 	}
1428 	(void)strlcpy(buf, name, sizeof(buf));
1429 	buf[name_end-name] = '\0';
1430 
1431 	type = last_space_pos(name_end);
1432 	while(type && *type && isspace((unsigned char)*type))
1433 		type++;
1434 	if(!type || !*type) {
1435 		log_err("syntax error: expected zone type: %s", val);
1436 		return 0;
1437 	}
1438 
1439 	if(strcmp(type, "nodefault")==0) {
1440 		return cfg_strlist_insert(&cfg->local_zones_nodefault,
1441 			strdup(name));
1442 	} else {
1443 		return cfg_str2list_insert(&cfg->local_zones, strdup(buf),
1444 			strdup(type));
1445 	}
1446 }
1447 
1448 char* cfg_ptr_reverse(char* str)
1449 {
1450 	char* ip, *ip_end;
1451 	char* name;
1452 	char* result;
1453 	char buf[1024];
1454 	struct sockaddr_storage addr;
1455 	socklen_t addrlen;
1456 
1457 	/* parse it as: [IP] [between stuff] [name] */
1458 	ip = str;
1459 	while(*ip && isspace((unsigned char)*ip))
1460 		ip++;
1461 	if(!*ip) {
1462 		log_err("syntax error: too short: %s", str);
1463 		return NULL;
1464 	}
1465 	ip_end = next_space_pos(ip);
1466 	if(!ip_end || !*ip_end) {
1467 		log_err("syntax error: expected name: %s", str);
1468 		return NULL;
1469 	}
1470 
1471 	name = last_space_pos(ip_end);
1472 	if(!name || !*name) {
1473 		log_err("syntax error: expected name: %s", str);
1474 		return NULL;
1475 	}
1476 
1477 	sscanf(ip, "%100s", buf);
1478 	buf[sizeof(buf)-1]=0;
1479 
1480 	if(!ipstrtoaddr(buf, UNBOUND_DNS_PORT, &addr, &addrlen)) {
1481 		log_err("syntax error: cannot parse address: %s", str);
1482 		return NULL;
1483 	}
1484 
1485 	/* reverse IPv4:
1486 	 * ddd.ddd.ddd.ddd.in-addr-arpa.
1487 	 * IPv6: (h.){32}.ip6.arpa.  */
1488 
1489 	if(addr_is_ip6(&addr, addrlen)) {
1490 		uint8_t ad[16];
1491 		const char* hex = "0123456789abcdef";
1492 		char *p = buf;
1493 		int i;
1494 		memmove(ad, &((struct sockaddr_in6*)&addr)->sin6_addr,
1495 			sizeof(ad));
1496 		for(i=15; i>=0; i--) {
1497 			uint8_t b = ad[i];
1498 			*p++ = hex[ (b&0x0f) ];
1499 			*p++ = '.';
1500 			*p++ = hex[ (b&0xf0) >> 4 ];
1501 			*p++ = '.';
1502 		}
1503 		snprintf(buf+16*4, sizeof(buf)-16*4, "ip6.arpa. ");
1504 	} else {
1505 		uint8_t ad[4];
1506 		memmove(ad, &((struct sockaddr_in*)&addr)->sin_addr,
1507 			sizeof(ad));
1508 		snprintf(buf, sizeof(buf), "%u.%u.%u.%u.in-addr.arpa. ",
1509 			(unsigned)ad[3], (unsigned)ad[2],
1510 			(unsigned)ad[1], (unsigned)ad[0]);
1511 	}
1512 
1513 	/* printed the reverse address, now the between goop and name on end */
1514 	while(*ip_end && isspace((unsigned char)*ip_end))
1515 		ip_end++;
1516 	if(name>ip_end) {
1517 		snprintf(buf+strlen(buf), sizeof(buf)-strlen(buf), "%.*s",
1518 			(int)(name-ip_end), ip_end);
1519 	}
1520 	snprintf(buf+strlen(buf), sizeof(buf)-strlen(buf), " PTR %s", name);
1521 
1522 	result = strdup(buf);
1523 	if(!result) {
1524 		log_err("out of memory parsing %s", str);
1525 		return NULL;
1526 	}
1527 	return result;
1528 }
1529 
1530 #ifdef UB_ON_WINDOWS
1531 char*
1532 w_lookup_reg_str(const char* key, const char* name)
1533 {
1534 	HKEY hk = NULL;
1535 	DWORD type = 0;
1536 	BYTE buf[1024];
1537 	DWORD len = (DWORD)sizeof(buf);
1538 	LONG ret;
1539 	char* result = NULL;
1540 	ret = RegOpenKeyEx(HKEY_LOCAL_MACHINE, key, 0, KEY_READ, &hk);
1541 	if(ret == ERROR_FILE_NOT_FOUND)
1542 		return NULL; /* key does not exist */
1543 	else if(ret != ERROR_SUCCESS) {
1544 		log_err("RegOpenKeyEx failed");
1545 		return NULL;
1546 	}
1547 	ret = RegQueryValueEx(hk, (LPCTSTR)name, 0, &type, buf, &len);
1548 	if(RegCloseKey(hk))
1549 		log_err("RegCloseKey");
1550 	if(ret == ERROR_FILE_NOT_FOUND)
1551 		return NULL; /* name does not exist */
1552 	else if(ret != ERROR_SUCCESS) {
1553 		log_err("RegQueryValueEx failed");
1554 		return NULL;
1555 	}
1556 	if(type == REG_SZ || type == REG_MULTI_SZ || type == REG_EXPAND_SZ) {
1557 		buf[sizeof(buf)-1] = 0;
1558 		buf[sizeof(buf)-2] = 0; /* for multi_sz */
1559 		result = strdup((char*)buf);
1560 		if(!result) log_err("out of memory");
1561 	}
1562 	return result;
1563 }
1564 
1565 void w_config_adjust_directory(struct config_file* cfg)
1566 {
1567 	if(cfg->directory && cfg->directory[0]) {
1568 		TCHAR dirbuf[2*MAX_PATH+4];
1569 		if(strcmp(cfg->directory, "%EXECUTABLE%") == 0) {
1570 			/* get executable path, and if that contains
1571 			 * directories, snip off the filename part */
1572 			dirbuf[0] = 0;
1573 			if(!GetModuleFileName(NULL, dirbuf, MAX_PATH))
1574 				log_err("could not GetModuleFileName");
1575 			if(strrchr(dirbuf, '\\')) {
1576 				(strrchr(dirbuf, '\\'))[0] = 0;
1577 			} else log_err("GetModuleFileName had no path");
1578 			if(dirbuf[0]) {
1579 				/* adjust directory for later lookups to work*/
1580 				free(cfg->directory);
1581 				cfg->directory = memdup(dirbuf, strlen(dirbuf)+1);
1582 			}
1583 		}
1584 	}
1585 }
1586 #endif /* UB_ON_WINDOWS */
1587 
1588 void errinf(struct module_qstate* qstate, const char* str)
1589 {
1590 	struct config_strlist* p;
1591 	if(qstate->env->cfg->val_log_level < 2 || !str)
1592 		return;
1593 	p = (struct config_strlist*)regional_alloc(qstate->region, sizeof(*p));
1594 	if(!p) {
1595 		log_err("malloc failure in validator-error-info string");
1596 		return;
1597 	}
1598 	p->next = NULL;
1599 	p->str = regional_strdup(qstate->region, str);
1600 	if(!p->str) {
1601 		log_err("malloc failure in validator-error-info string");
1602 		return;
1603 	}
1604 	/* add at end */
1605 	if(qstate->errinf) {
1606 		struct config_strlist* q = qstate->errinf;
1607 		while(q->next)
1608 			q = q->next;
1609 		q->next = p;
1610 	} else	qstate->errinf = p;
1611 }
1612 
1613 void errinf_origin(struct module_qstate* qstate, struct sock_list *origin)
1614 {
1615 	struct sock_list* p;
1616 	if(qstate->env->cfg->val_log_level < 2)
1617 		return;
1618 	for(p=origin; p; p=p->next) {
1619 		char buf[256];
1620 		if(p == origin)
1621 			snprintf(buf, sizeof(buf), "from ");
1622 		else	snprintf(buf, sizeof(buf), "and ");
1623 		if(p->len == 0)
1624 			snprintf(buf+strlen(buf), sizeof(buf)-strlen(buf),
1625 				"cache");
1626 		else
1627 			addr_to_str(&p->addr, p->len, buf+strlen(buf),
1628 				sizeof(buf)-strlen(buf));
1629 		errinf(qstate, buf);
1630 	}
1631 }
1632 
1633 char* errinf_to_str(struct module_qstate* qstate)
1634 {
1635 	char buf[20480];
1636 	char* p = buf;
1637 	size_t left = sizeof(buf);
1638 	struct config_strlist* s;
1639 	char dname[LDNS_MAX_DOMAINLEN+1];
1640 	char t[16], c[16];
1641 	sldns_wire2str_type_buf(qstate->qinfo.qtype, t, sizeof(t));
1642 	sldns_wire2str_class_buf(qstate->qinfo.qclass, c, sizeof(c));
1643 	dname_str(qstate->qinfo.qname, dname);
1644 	snprintf(p, left, "validation failure <%s %s %s>:", dname, t, c);
1645 	left -= strlen(p); p += strlen(p);
1646 	if(!qstate->errinf)
1647 		snprintf(p, left, " misc failure");
1648 	else for(s=qstate->errinf; s; s=s->next) {
1649 		snprintf(p, left, " %s", s->str);
1650 		left -= strlen(p); p += strlen(p);
1651 	}
1652 	p = strdup(buf);
1653 	if(!p)
1654 		log_err("malloc failure in errinf_to_str");
1655 	return p;
1656 }
1657 
1658 void errinf_rrset(struct module_qstate* qstate, struct ub_packed_rrset_key *rr)
1659 {
1660 	char buf[1024];
1661 	char dname[LDNS_MAX_DOMAINLEN+1];
1662 	char t[16], c[16];
1663 	if(qstate->env->cfg->val_log_level < 2 || !rr)
1664 		return;
1665 	sldns_wire2str_type_buf(ntohs(rr->rk.type), t, sizeof(t));
1666 	sldns_wire2str_class_buf(ntohs(rr->rk.rrset_class), c, sizeof(c));
1667 	dname_str(rr->rk.dname, dname);
1668 	snprintf(buf, sizeof(buf), "for <%s %s %s>", dname, t, c);
1669 	errinf(qstate, buf);
1670 }
1671 
1672 void errinf_dname(struct module_qstate* qstate, const char* str, uint8_t* dname)
1673 {
1674 	char b[1024];
1675 	char buf[LDNS_MAX_DOMAINLEN+1];
1676 	if(qstate->env->cfg->val_log_level < 2 || !str || !dname)
1677 		return;
1678 	dname_str(dname, buf);
1679 	snprintf(b, sizeof(b), "%s %s", str, buf);
1680 	errinf(qstate, b);
1681 }
1682