config.c 21.5 KB
Newer Older
1
/*
Automatic Updater's avatar
Automatic Updater committed
2
 * Copyright (C) 2004-2012  Internet Systems Consortium, Inc. ("ISC")
Mark Andrews's avatar
Mark Andrews committed
3
 * Copyright (C) 2001-2003  Internet Software Consortium.
4
 *
Automatic Updater's avatar
Automatic Updater committed
5
 * Permission to use, copy, modify, and/or distribute this software for any
6
7
8
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
Mark Andrews's avatar
Mark Andrews committed
9
10
11
12
13
14
15
 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
 * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 * PERFORMANCE OF THIS SOFTWARE.
16
17
 */

Automatic Updater's avatar
Automatic Updater committed
18
/* $Id: config.c,v 1.123 2012/01/06 23:46:41 tbox Exp $ */
19
20

/*! \file */
Brian Wellington's avatar
Brian Wellington committed
21
22

#include <config.h>
23
24
25
26
27
28

#include <stdlib.h>

#include <isc/buffer.h>
#include <isc/log.h>
#include <isc/mem.h>
29
#include <isc/parseint.h>
30
31
32
#include <isc/region.h>
#include <isc/result.h>
#include <isc/sockaddr.h>
Evan Hunt's avatar
Evan Hunt committed
33
#include <isc/string.h>
34
35
#include <isc/util.h>

36
#include <isccfg/namedconf.h>
37
38
39
40

#include <dns/fixedname.h>
#include <dns/name.h>
#include <dns/rdataclass.h>
41
#include <dns/rdatatype.h>
Brian Wellington's avatar
Brian Wellington committed
42
#include <dns/tsig.h>
43
44
#include <dns/zone.h>

45
46
#include <dst/dst.h>

47
48
49
#include <named/config.h>
#include <named/globals.h>

50
51
#include "bind.keys.h"

52
/*% default configuration */
53
54
static char defaultconf[] = "\
options {\n\
55
56
57
#	blackhole {none;};\n"
#ifndef WIN32
"	coresize default;\n\
58
	datasize default;\n\
59
	files unlimited;\n\
60
61
	stacksize default;\n"
#endif
62
63
64
"#	session-keyfile \"" NS_LOCALSTATEDIR "/run/named/session.key\";\n\
	session-keyname local-ddns;\n\
	session-keyalg hmac-sha256;\n\
65
	deallocate-on-exit true;\n\
66
67
68
69
#	directory <none>\n\
	dump-file \"named_dump.db\";\n\
	fake-iquery no;\n\
	has-old-clients false;\n\
70
	heartbeat-interval 60;\n\
71
	host-statistics no;\n\
72
	interface-interval 60;\n\
73
74
	listen-on {any;};\n\
	listen-on-v6 {none;};\n\
75
	match-mapped-addresses no;\n\
76
77
	memstatistics-file \"named.memstats\";\n\
	multiple-cnames no;\n\
78
#	named-xfer <obsolete>;\n\
79
#	pid-file \"" NS_LOCALSTATEDIR "/run/named/named.pid\"; /* or /lwresd.pid */\n\
80
	bindkeys-file \"" NS_SYSCONFDIR "/bind.keys\";\n\
81
	port 53;\n\
82
	recursing-file \"named.recursing\";\n\
83
	secroots-file \"named.secroots\";\n\
84
85
"
#ifdef PATH_RANDOMDEV
86
87
"\
	random-device \"" PATH_RANDOMDEV "\";\n\
88
89
"
#endif
90
91
"\
	recursive-clients 1000;\n\
92
	resolver-query-timeout 30;\n\
93
	rrset-order { order random; };\n\
94
	serial-queries 20;\n\
95
	serial-query-rate 20;\n\
96
	server-id none;\n\
97
	statistics-file \"named.stats\";\n\
98
	statistics-interval 60;\n\
99
	tcp-clients 100;\n\
Michael Graff's avatar
Michael Graff committed
100
	tcp-listen-queue 3;\n\
101
102
103
104
105
106
107
108
109
#	tkey-dhkey <none>\n\
#	tkey-gssapi-credential <none>\n\
#	tkey-domain <none>\n\
	transfers-per-ns 2;\n\
	transfers-in 10;\n\
	transfers-out 10;\n\
	treat-cr-as-space true;\n\
	use-id-pool true;\n\
	use-ixfr true;\n\
110
	edns-udp-size 4096;\n\
111
	max-udp-size 4096;\n\
112
	request-nsid false;\n\
113
	reserved-sockets 512;\n\
114
115
116
\n\
	/* DLV */\n\
	dnssec-lookaside . trust-anchor dlv.isc.org;\n\
117
118
119
120
\n\
	/* view */\n\
	allow-notify {none;};\n\
	allow-update-forwarding {none;};\n\
121
	allow-query-cache { localnets; localhost; };\n\
122
	allow-query-cache-on { any; };\n\
123
	allow-recursion { localnets; localhost; };\n\
124
	allow-recursion-on { any; };\n\
125
#	allow-v6-synthesis <obsolete>;\n\
126
127
128
#	sortlist <none>\n\
#	topology <none>\n\
	auth-nxdomain false;\n\
Bob Halley's avatar
Bob Halley committed
129
	minimal-responses false;\n\
130
131
132
133
134
135
136
137
138
139
140
	recursion true;\n\
	provide-ixfr true;\n\
	request-ixfr true;\n\
	fetch-glue no;\n\
	rfc2308-type1 no;\n\
	additional-from-auth true;\n\
	additional-from-cache true;\n\
	query-source address *;\n\
	query-source-v6 address *;\n\
	notify-source *;\n\
	notify-source-v6 *;\n\
141
	cleaning-interval 0;  /* now meaningless */\n\
142
143
144
145
146
	min-roots 2;\n\
	lame-ttl 600;\n\
	max-ncache-ttl 10800; /* 3 hours */\n\
	max-cache-ttl 604800; /* 1 week */\n\
	transfer-format many-answers;\n\
147
	max-cache-size 0;\n\
148
149
	check-names master fail;\n\
	check-names slave warn;\n\
150
	check-names response ignore;\n\
151
	check-dup-records warn;\n\
152
	check-mx warn;\n\
153
	acache-enable no;\n\
154
	acache-cleaning-interval 60;\n\
155
	max-acache-size 16M;\n\
156
	dnssec-enable yes;\n\
157
	dnssec-validation yes; \n\
158
	dnssec-accept-expired no;\n\
159
160
	clients-per-query 10;\n\
	max-clients-per-query 100;\n\
161
	zero-no-soa-ttl-cache no;\n\
162
	nsec3-test-zone no;\n\
163
	allow-new-zones no;\n\
Mark Andrews's avatar
Mark Andrews committed
164
"
Evan Hunt's avatar
Evan Hunt committed
165
#ifdef ALLOW_FILTER_AAAA
166
"	filter-aaaa-on-v4 no;\n\
Evan Hunt's avatar
Evan Hunt committed
167
	filter-aaaa-on-v6 no;\n\
Automatic Updater's avatar
Automatic Updater committed
168
	filter-aaaa { any; };\n\
169
170
"
#endif
Mark Andrews's avatar
Mark Andrews committed
171
172

"	/* zone */\n\
173
	allow-query {any;};\n\
174
	allow-query-on {any;};\n\
175
176
177
	allow-transfer {any;};\n\
	notify yes;\n\
#	also-notify <none>\n\
178
	notify-delay 5;\n\
179
	notify-to-soa no;\n\
180
181
182
183
184
185
186
	dialup no;\n\
#	forward <none>\n\
#	forwarders <none>\n\
	maintain-ixfr-base no;\n\
#	max-ixfr-log-size <obsolete>\n\
	transfer-source *;\n\
	transfer-source-v6 *;\n\
187
	alt-transfer-source *;\n\
188
	alt-transfer-source-v6 *;\n\
189
190
191
192
	max-transfer-time-in 120;\n\
	max-transfer-time-out 120;\n\
	max-transfer-idle-in 60;\n\
	max-transfer-idle-out 60;\n\
193
194
195
196
	max-retry-time 1209600; /* 2 weeks */\n\
	min-retry-time 500;\n\
	max-refresh-time 2419200; /* 4 weeks */\n\
	min-refresh-time 300;\n\
197
	multi-master no;\n\
198
	dnssec-secure-to-insecure no;\n\
199
	sig-validity-interval 30; /* days */\n\
200
201
	sig-signing-nodes 100;\n\
	sig-signing-signatures 10;\n\
202
	sig-signing-type 65534;\n\
203
	inline-signing no;\n\
204
	zone-statistics false;\n\
205
	max-journal-size unlimited;\n\
206
	ixfr-from-differences false;\n\
207
	check-wildcard yes;\n\
208
209
	check-sibling yes;\n\
	check-integrity yes;\n\
210
211
	check-mx-cname warn;\n\
	check-srv-cname warn;\n\
212
	zero-no-soa-ttl yes;\n\
213
	update-check-ksk yes;\n\
214
	serial-update-method increment;\n\
215
	dnssec-update-mode maintain;\n\
216
	dnssec-dnskey-kskonly no;\n\
217
	dnssec-loadkeys-interval 60;\n\
218
	try-tcp-refresh yes; /* BIND 8 compat */\n\
219
};\n\
Mark Andrews's avatar
Mark Andrews committed
220
221
222
"

"#\n\
Mark Andrews's avatar
Mark Andrews committed
223
#  Zones in the \"_bind\" view are NOT counted in the count of zones.\n\
224
#\n\
225
226
view \"_bind\" chaos {\n\
	recursion no;\n\
227
	notify no;\n\
228
	allow-new-zones no;\n\
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
\n\
	zone \"version.bind\" chaos {\n\
		type master;\n\
		database \"_builtin version\";\n\
	};\n\
\n\
	zone \"hostname.bind\" chaos {\n\
		type master;\n\
		database \"_builtin hostname\";\n\
	};\n\
\n\
	zone \"authors.bind\" chaos {\n\
		type master;\n\
		database \"_builtin authors\";\n\
	};\n\
244
\n\
245
246
247
248
	zone \"id.server\" chaos {\n\
		type master;\n\
		database \"_builtin id\";\n\
	};\n\
249
};\n\
250
251
252
253
254
255
"
"#\n\
#  Default trusted key(s) for builtin DLV support\n\
#  (used if \"dnssec-lookaside auto;\" is set and\n\
#  sysconfdir/bind.keys doesn't exist).\n\
#\n\
256
# BEGIN MANAGED KEYS\n"
257
258

/* Imported from bind.keys.h: */
259
MANAGED_KEYS
260

261
"# END MANAGED KEYS\n\
262
";
263
264
265
266
267
268
269
270
271
272
273

isc_result_t
ns_config_parsedefaults(cfg_parser_t *parser, cfg_obj_t **conf) {
	isc_buffer_t b;

	isc_buffer_init(&b, defaultconf, sizeof(defaultconf) - 1);
	isc_buffer_add(&b, sizeof(defaultconf) - 1);
	return (cfg_parse_buffer(parser, &b, &cfg_type_namedconf, conf));
}

isc_result_t
274
ns_config_get(const cfg_obj_t **maps, const char *name, const cfg_obj_t **obj) {
275
276
	int i;

277
	for (i = 0;; i++) {
278
279
280
281
282
283
284
		if (maps[i] == NULL)
			return (ISC_R_NOTFOUND);
		if (cfg_map_get(maps[i], name, obj) == ISC_R_SUCCESS)
			return (ISC_R_SUCCESS);
	}
}

285
isc_result_t
286
287
288
289
290
291
292
ns_checknames_get(const cfg_obj_t **maps, const char *which,
		  const cfg_obj_t **obj)
{
	const cfg_listelt_t *element;
	const cfg_obj_t *checknames;
	const cfg_obj_t *type;
	const cfg_obj_t *value;
293
294
295
296
297
298
	int i;

	for (i = 0;; i++) {
		if (maps[i] == NULL)
			return (ISC_R_NOTFOUND);
		checknames = NULL;
299
		if (cfg_map_get(maps[i], "check-names",
Automatic Updater's avatar
Automatic Updater committed
300
				&checknames) == ISC_R_SUCCESS) {
301
302
303
304
305
306
307
308
309
310
311
312
			/*
			 * Zone map entry is not a list.
			 */
			if (checknames != NULL && !cfg_obj_islist(checknames)) {
				*obj = checknames;
				return (ISC_R_SUCCESS);
			}
			for (element = cfg_list_first(checknames);
			     element != NULL;
			     element = cfg_list_next(element)) {
				value = cfg_listelt_value(element);
				type = cfg_tuple_get(value, "type");
313
314
				if (strcasecmp(cfg_obj_asstring(type),
					       which) == 0) {
315
316
317
318
319
320
321
322
323
					*obj = cfg_tuple_get(value, "mode");
					return (ISC_R_SUCCESS);
				}
			}

		}
	}
}

324
int
325
326
ns_config_listcount(const cfg_obj_t *list) {
	const cfg_listelt_t *e;
327
328
329
330
331
332
333
334
335
	int i = 0;

	for (e = cfg_list_first(list); e != NULL; e = cfg_list_next(e))
		i++;

	return (i);
}

isc_result_t
336
ns_config_getclass(const cfg_obj_t *classobj, dns_rdataclass_t defclass,
337
		   dns_rdataclass_t *classp) {
338
	isc_textregion_t r;
339
	isc_result_t result;
340
341

	if (!cfg_obj_isstring(classobj)) {
342
		*classp = defclass;
343
344
		return (ISC_R_SUCCESS);
	}
345
346
	DE_CONST(cfg_obj_asstring(classobj), r.base);
	r.length = strlen(r.base);
347
348
349
	result = dns_rdataclass_fromtext(classp, &r);
	if (result != ISC_R_SUCCESS)
		cfg_obj_log(classobj, ns_g_lctx, ISC_LOG_ERROR,
350
			    "unknown class '%s'", r.base);
351
	return (result);
352
353
}

354
isc_result_t
355
ns_config_gettype(const cfg_obj_t *typeobj, dns_rdatatype_t deftype,
356
357
358
359
360
361
362
363
		   dns_rdatatype_t *typep) {
	isc_textregion_t r;
	isc_result_t result;

	if (!cfg_obj_isstring(typeobj)) {
		*typep = deftype;
		return (ISC_R_SUCCESS);
	}
364
365
	DE_CONST(cfg_obj_asstring(typeobj), r.base);
	r.length = strlen(r.base);
366
367
368
	result = dns_rdatatype_fromtext(typep, &r);
	if (result != ISC_R_SUCCESS)
		cfg_obj_log(typeobj, ns_g_lctx, ISC_LOG_ERROR,
369
			    "unknown type '%s'", r.base);
370
371
372
	return (result);
}

373
dns_zonetype_t
374
ns_config_getzonetype(const cfg_obj_t *zonetypeobj) {
375
	dns_zonetype_t ztype = dns_zone_none;
376
	const char *str;
377
378

	str = cfg_obj_asstring(zonetypeobj);
379
	if (strcasecmp(str, "master") == 0)
380
		ztype = dns_zone_master;
381
	else if (strcasecmp(str, "slave") == 0)
382
		ztype = dns_zone_slave;
383
	else if (strcasecmp(str, "stub") == 0)
384
		ztype = dns_zone_stub;
385
386
	else if (strcasecmp(str, "static-stub") == 0)
		ztype = dns_zone_staticstub;
387
388
	else if (strcasecmp(str, "redirect") == 0)
		ztype = dns_zone_redirect;
389
390
391
392
393
394
	else
		INSIST(0);
	return (ztype);
}

isc_result_t
395
ns_config_getiplist(const cfg_obj_t *config, const cfg_obj_t *list,
396
397
398
399
		    in_port_t defport, isc_mem_t *mctx,
		    isc_sockaddr_t **addrsp, isc_uint32_t *countp)
{
	int count, i = 0;
400
401
402
	const cfg_obj_t *addrlist;
	const cfg_obj_t *portobj;
	const cfg_listelt_t *element;
403
404
405
406
407
	isc_sockaddr_t *addrs;
	in_port_t port;
	isc_result_t result;

	INSIST(addrsp != NULL && *addrsp == NULL);
408
	INSIST(countp != NULL);
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460

	addrlist = cfg_tuple_get(list, "addresses");
	count = ns_config_listcount(addrlist);

	portobj = cfg_tuple_get(list, "port");
	if (cfg_obj_isuint32(portobj)) {
		isc_uint32_t val = cfg_obj_asuint32(portobj);
		if (val > ISC_UINT16_MAX) {
			cfg_obj_log(portobj, ns_g_lctx, ISC_LOG_ERROR,
				    "port '%u' out of range", val);
			return (ISC_R_RANGE);
		}
		port = (in_port_t) val;
	} else if (defport != 0)
		port = defport;
	else {
		result = ns_config_getport(config, &port);
		if (result != ISC_R_SUCCESS)
			return (result);
	}

	addrs = isc_mem_get(mctx, count * sizeof(isc_sockaddr_t));
	if (addrs == NULL)
		return (ISC_R_NOMEMORY);

	for (element = cfg_list_first(addrlist);
	     element != NULL;
	     element = cfg_list_next(element), i++)
	{
		INSIST(i < count);
		addrs[i] = *cfg_obj_assockaddr(cfg_listelt_value(element));
		if (isc_sockaddr_getport(&addrs[i]) == 0)
			isc_sockaddr_setport(&addrs[i], port);
	}
	INSIST(i == count);

	*addrsp = addrs;
	*countp = count;

	return (ISC_R_SUCCESS);
}

void
ns_config_putiplist(isc_mem_t *mctx, isc_sockaddr_t **addrsp,
		    isc_uint32_t count)
{
	INSIST(addrsp != NULL && *addrsp != NULL);

	isc_mem_put(mctx, *addrsp, count * sizeof(isc_sockaddr_t));
	*addrsp = NULL;
}

461
static isc_result_t
462
get_masters_def(const cfg_obj_t *cctx, const char *name,
Automatic Updater's avatar
Automatic Updater committed
463
		const cfg_obj_t **ret)
464
{
465
	isc_result_t result;
466
467
	const cfg_obj_t *masters = NULL;
	const cfg_listelt_t *elt;
468
469
470
471
472
473
474

	result = cfg_map_get(cctx, "masters", &masters);
	if (result != ISC_R_SUCCESS)
		return (result);
	for (elt = cfg_list_first(masters);
	     elt != NULL;
	     elt = cfg_list_next(elt)) {
475
		const cfg_obj_t *list;
476
477
478
479
480
481
482
483
484
485
486
487
488
		const char *listname;

		list = cfg_listelt_value(elt);
		listname = cfg_obj_asstring(cfg_tuple_get(list, "name"));

		if (strcasecmp(listname, name) == 0) {
			*ret = list;
			return (ISC_R_SUCCESS);
		}
	}
	return (ISC_R_NOTFOUND);
}

489
isc_result_t
490
491
492
ns_config_getipandkeylist(const cfg_obj_t *config, const cfg_obj_t *list,
			  isc_mem_t *mctx, isc_sockaddr_t **addrsp,
			  dns_name_t ***keysp, isc_uint32_t *countp)
493
{
494
495
496
	isc_uint32_t addrcount = 0, keycount = 0, i = 0;
	isc_uint32_t listcount = 0, l = 0, j;
	isc_uint32_t stackcount = 0, pushed = 0;
497
	isc_result_t result;
498
499
500
	const cfg_listelt_t *element;
	const cfg_obj_t *addrlist;
	const cfg_obj_t *portobj;
501
502
503
504
	in_port_t port;
	dns_fixedname_t fname;
	isc_sockaddr_t *addrs = NULL;
	dns_name_t **keys = NULL;
Mark Andrews's avatar
Mark Andrews committed
505
	struct { const char *name; } *lists = NULL;
506
	struct {
507
		const cfg_listelt_t *element;
508
509
		in_port_t port;
	} *stack = NULL;
510

511
512
513
	REQUIRE(addrsp != NULL && *addrsp == NULL);
	REQUIRE(keysp != NULL && *keysp == NULL);
	REQUIRE(countp != NULL);
514

515
 newlist:
516
517
518
519
520
521
522
	addrlist = cfg_tuple_get(list, "addresses");
	portobj = cfg_tuple_get(list, "port");
	if (cfg_obj_isuint32(portobj)) {
		isc_uint32_t val = cfg_obj_asuint32(portobj);
		if (val > ISC_UINT16_MAX) {
			cfg_obj_log(portobj, ns_g_lctx, ISC_LOG_ERROR,
				    "port '%u' out of range", val);
523
524
			result = ISC_R_RANGE;
			goto cleanup;
525
526
527
528
529
		}
		port = (in_port_t) val;
	} else {
		result = ns_config_getport(config, &port);
		if (result != ISC_R_SUCCESS)
530
			goto cleanup;
531
532
533
534
	}

	result = ISC_R_NOMEMORY;

535
536
537
	element = cfg_list_first(addrlist);
 resume:
	for ( ;
538
	     element != NULL;
539
	     element = cfg_list_next(element))
540
	{
541
542
		const cfg_obj_t *addr;
		const cfg_obj_t *key;
543
		const char *keystr;
544
545
		isc_buffer_t b;

546
547
		addr = cfg_tuple_get(cfg_listelt_value(element),
				     "masterselement");
548
549
		key = cfg_tuple_get(cfg_listelt_value(element), "key");

550
		if (!cfg_obj_issockaddr(addr)) {
551
			const char *listname = cfg_obj_asstring(addr);
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
			isc_result_t tresult;

			/* Grow lists? */
			if (listcount == l) {
				void * new;
				isc_uint32_t newlen = listcount + 16;
				size_t newsize, oldsize;

				newsize = newlen * sizeof(*lists);
				oldsize = listcount * sizeof(*lists);
				new = isc_mem_get(mctx, newsize);
				if (new == NULL)
					goto cleanup;
				if (listcount != 0) {
					memcpy(new, lists, oldsize);
					isc_mem_put(mctx, lists, oldsize);
				}
				lists = new;
				listcount = newlen;
			}
			/* Seen? */
			for (j = 0; j < l; j++)
Mark Andrews's avatar
Mark Andrews committed
574
				if (strcasecmp(lists[j].name, listname) == 0)
575
576
577
578
579
580
					break;
			if (j < l)
				continue;
			tresult = get_masters_def(config, listname, &list);
			if (tresult == ISC_R_NOTFOUND) {
				cfg_obj_log(addr, ns_g_lctx, ISC_LOG_ERROR,
Automatic Updater's avatar
Automatic Updater committed
581
				    "masters \"%s\" not found", listname);
582
583
584
585
586
587

				result = tresult;
				goto cleanup;
			}
			if (tresult != ISC_R_SUCCESS)
				goto cleanup;
Mark Andrews's avatar
Mark Andrews committed
588
			lists[l++].name = listname;
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
			/* Grow stack? */
			if (stackcount == pushed) {
				void * new;
				isc_uint32_t newlen = stackcount + 16;
				size_t newsize, oldsize;

				newsize = newlen * sizeof(*stack);
				oldsize = stackcount * sizeof(*stack);
				new = isc_mem_get(mctx, newsize);
				if (new == NULL)
					goto cleanup;
				if (stackcount != 0) {
					memcpy(new, stack, oldsize);
					isc_mem_put(mctx, stack, oldsize);
				}
				stack = new;
				stackcount = newlen;
			}
			/*
			 * We want to resume processing this list on the
			 * next element.
			 */
			stack[pushed].element = cfg_list_next(element);
			stack[pushed].port = port;
			pushed++;
			goto newlist;
		}

		if (i == addrcount) {
			void * new;
			isc_uint32_t newlen = addrcount + 16;
			size_t newsize, oldsize;

			newsize = newlen * sizeof(isc_sockaddr_t);
			oldsize = addrcount * sizeof(isc_sockaddr_t);
			new = isc_mem_get(mctx, newsize);
			if (new == NULL)
				goto cleanup;
			if (addrcount != 0) {
				memcpy(new, addrs, oldsize);
				isc_mem_put(mctx, addrs, oldsize);
			}
			addrs = new;
			addrcount = newlen;

			newsize = newlen * sizeof(dns_name_t *);
			oldsize = keycount * sizeof(dns_name_t *);
			new = isc_mem_get(mctx, newsize);
			if (new == NULL)
				goto cleanup;
			if (keycount != 0) {
640
641
				memcpy(new, keys, oldsize);
				isc_mem_put(mctx, keys, oldsize);
642
643
644
645
646
			}
			keys = new;
			keycount = newlen;
		}

647
648
649
650
		addrs[i] = *cfg_obj_assockaddr(addr);
		if (isc_sockaddr_getport(&addrs[i]) == 0)
			isc_sockaddr_setport(&addrs[i], port);
		keys[i] = NULL;
651
652
		if (!cfg_obj_isstring(key)) {
			i++;
653
			continue;
654
		}
655
656
657
658
		keys[i] = isc_mem_get(mctx, sizeof(dns_name_t));
		if (keys[i] == NULL)
			goto cleanup;
		dns_name_init(keys[i], NULL);
Automatic Updater's avatar
Automatic Updater committed
659

660
661
662
663
664
		keystr = cfg_obj_asstring(key);
		isc_buffer_init(&b, keystr, strlen(keystr));
		isc_buffer_add(&b, strlen(keystr));
		dns_fixedname_init(&fname);
		result = dns_name_fromtext(dns_fixedname_name(&fname), &b,
665
					   dns_rootname, 0, NULL);
666
667
668
669
670
671
		if (result != ISC_R_SUCCESS)
			goto cleanup;
		result = dns_name_dup(dns_fixedname_name(&fname), mctx,
				      keys[i]);
		if (result != ISC_R_SUCCESS)
			goto cleanup;
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
		i++;
	}
	if (pushed != 0) {
		pushed--;
		element = stack[pushed].element;
		port = stack[pushed].port;
		goto resume;
	}
	if (i < addrcount) {
		void * new;
		size_t newsize, oldsize;

		newsize = i * sizeof(isc_sockaddr_t);
		oldsize = addrcount * sizeof(isc_sockaddr_t);
		if (i != 0) {
			new = isc_mem_get(mctx, newsize);
			if (new == NULL)
				goto cleanup;
			memcpy(new, addrs, newsize);
		} else
			new = NULL;
693
		isc_mem_put(mctx, addrs, oldsize);
694
695
696
697
698
699
700
701
702
703
704
705
		addrs = new;
		addrcount = i;

		newsize = i * sizeof(dns_name_t *);
		oldsize = keycount * sizeof(dns_name_t *);
		if (i != 0) {
			new = isc_mem_get(mctx, newsize);
			if (new == NULL)
				goto cleanup;
			memcpy(new, keys,  newsize);
		} else
			new = NULL;
706
		isc_mem_put(mctx, keys, oldsize);
707
708
		keys = new;
		keycount = i;
709
	}
710
711
712
713
714

	if (lists != NULL)
		isc_mem_put(mctx, lists, listcount * sizeof(*lists));
	if (stack != NULL)
		isc_mem_put(mctx, stack, stackcount * sizeof(*stack));
Automatic Updater's avatar
Automatic Updater committed
715

716
	INSIST(keycount == addrcount);
717
718
719

	*addrsp = addrs;
	*keysp = keys;
720
	*countp = addrcount;
721
722
723
724
725

	return (ISC_R_SUCCESS);

 cleanup:
	if (addrs != NULL)
726
		isc_mem_put(mctx, addrs, addrcount * sizeof(isc_sockaddr_t));
727
	if (keys != NULL) {
728
		for (j = 0; j <= i; j++) {
729
730
731
732
733
734
			if (keys[j] == NULL)
				continue;
			if (dns_name_dynamic(keys[j]))
				dns_name_free(keys[j], mctx);
			isc_mem_put(mctx, keys[j], sizeof(dns_name_t));
		}
735
		isc_mem_put(mctx, keys, keycount * sizeof(dns_name_t *));
736
	}
737
738
739
740
	if (lists != NULL)
		isc_mem_put(mctx, lists, listcount * sizeof(*lists));
	if (stack != NULL)
		isc_mem_put(mctx, stack, stackcount * sizeof(*stack));
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
	return (result);
}

void
ns_config_putipandkeylist(isc_mem_t *mctx, isc_sockaddr_t **addrsp,
			  dns_name_t ***keysp, isc_uint32_t count)
{
	unsigned int i;
	dns_name_t **keys = *keysp;

	INSIST(addrsp != NULL && *addrsp != NULL);

	isc_mem_put(mctx, *addrsp, count * sizeof(isc_sockaddr_t));
	for (i = 0; i < count; i++) {
		if (keys[i] == NULL)
			continue;
		if (dns_name_dynamic(keys[i]))
			dns_name_free(keys[i], mctx);
		isc_mem_put(mctx, keys[i], sizeof(dns_name_t));
	}
	isc_mem_put(mctx, *keysp, count * sizeof(dns_name_t *));
	*addrsp = NULL;
	*keysp = NULL;
}

isc_result_t
767
768
769
770
ns_config_getport(const cfg_obj_t *config, in_port_t *portp) {
	const cfg_obj_t *maps[3];
	const cfg_obj_t *options = NULL;
	const cfg_obj_t *portobj = NULL;
771
772
773
	isc_result_t result;
	int i;

774
	(void)cfg_map_get(config, "options", &options);
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
	i = 0;
	if (options != NULL)
		maps[i++] = options;
	maps[i++] = ns_g_defaults;
	maps[i] = NULL;

	result = ns_config_get(maps, "port", &portobj);
	INSIST(result == ISC_R_SUCCESS);
	if (cfg_obj_asuint32(portobj) >= ISC_UINT16_MAX) {
		cfg_obj_log(portobj, ns_g_lctx, ISC_LOG_ERROR,
			    "port '%u' out of range",
			    cfg_obj_asuint32(portobj));
		return (ISC_R_RANGE);
	}
	*portp = (in_port_t)cfg_obj_asuint32(portobj);
	return (ISC_R_SUCCESS);
}
Brian Wellington's avatar
Brian Wellington committed
792

793
794
795
796
struct keyalgorithms {
	const char *str;
	enum { hmacnone, hmacmd5, hmacsha1, hmacsha224,
	       hmacsha256, hmacsha384, hmacsha512 } hmac;
797
	unsigned int type;
798
799
	isc_uint16_t size;
} algorithms[] = {
800
801
802
803
804
805
806
807
808
	{ "hmac-md5", hmacmd5, DST_ALG_HMACMD5, 128 },
	{ "hmac-md5.sig-alg.reg.int", hmacmd5, DST_ALG_HMACMD5, 0 },
	{ "hmac-md5.sig-alg.reg.int.", hmacmd5, DST_ALG_HMACMD5, 0 },
	{ "hmac-sha1", hmacsha1, DST_ALG_HMACSHA1, 160 },
	{ "hmac-sha224", hmacsha224, DST_ALG_HMACSHA224, 224 },
	{ "hmac-sha256", hmacsha256, DST_ALG_HMACSHA256, 256 },
	{ "hmac-sha384", hmacsha384, DST_ALG_HMACSHA384, 384 },
	{ "hmac-sha512", hmacsha512, DST_ALG_HMACSHA512, 512 },
	{  NULL, hmacnone, DST_ALG_UNKNOWN, 0 }
809
810
};

Brian Wellington's avatar
Brian Wellington committed
811
isc_result_t
812
813
ns_config_getkeyalgorithm(const char *str, dns_name_t **name,
			  isc_uint16_t *digestbits)
814
815
816
817
818
819
820
{
	return (ns_config_getkeyalgorithm2(str, name, NULL, digestbits));
}

isc_result_t
ns_config_getkeyalgorithm2(const char *str, dns_name_t **name,
			   unsigned int *typep, isc_uint16_t *digestbits)
Brian Wellington's avatar
Brian Wellington committed
821
{
822
823
824
825
826
827
828
829
830
831
832
	int i;
	size_t len = 0;
	isc_uint16_t bits;
	isc_result_t result;

	for (i = 0; algorithms[i].str != NULL; i++) {
		len = strlen(algorithms[i].str);
		if (strncasecmp(algorithms[i].str, str, len) == 0 &&
		    (str[len] == '\0' ||
		     (algorithms[i].size != 0 && str[len] == '-')))
			break;
Brian Wellington's avatar
Brian Wellington committed
833
	}
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
	if (algorithms[i].str == NULL)
		return (ISC_R_NOTFOUND);
	if (str[len] == '-') {
		result = isc_parse_uint16(&bits, str + len + 1, 10);
		if (result != ISC_R_SUCCESS)
			return (result);
		if (bits > algorithms[i].size)
			return (ISC_R_RANGE);
	} else if (algorithms[i].size == 0)
		bits = 128;
	else
		bits = algorithms[i].size;

	if (name != NULL) {
		switch (algorithms[i].hmac) {
		case hmacmd5: *name = dns_tsig_hmacmd5_name; break;
		case hmacsha1: *name = dns_tsig_hmacsha1_name; break;
		case hmacsha224: *name = dns_tsig_hmacsha224_name; break;
		case hmacsha256: *name = dns_tsig_hmacsha256_name; break;
		case hmacsha384: *name = dns_tsig_hmacsha384_name; break;
		case hmacsha512: *name = dns_tsig_hmacsha512_name; break;
		default:
			INSIST(0);
		}
	}
859
860
	if (typep != NULL)
		*typep = algorithms[i].type;
861
862
863
	if (digestbits != NULL)
		*digestbits = bits;
	return (ISC_R_SUCCESS);
Brian Wellington's avatar
Brian Wellington committed
864
}