config.c 21.2 KB
Newer Older
1
/*
Automatic Updater's avatar
Automatic Updater committed
2
 * Copyright (C) 2004-2009  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
 */

18
/* $Id: config.c,v 1.104 2009/10/26 23:14:53 each 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
84
"
#ifdef PATH_RANDOMDEV
85
86
"\
	random-device \"" PATH_RANDOMDEV "\";\n\
87
88
"
#endif
89
90
"\
	recursive-clients 1000;\n\
91
	rrset-order {type NS order random; order cyclic; };\n\
92
	serial-queries 20;\n\
93
	serial-query-rate 20;\n\
94
	server-id none;\n\
95
	statistics-file \"named.stats\";\n\
96
	statistics-interval 60;\n\
97
	tcp-clients 100;\n\
Michael Graff's avatar
Michael Graff committed
98
	tcp-listen-queue 3;\n\
99
100
101
102
103
104
105
106
107
#	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\
108
	edns-udp-size 4096;\n\
109
	max-udp-size 4096;\n\
110
	request-nsid false;\n\
111
	reserved-sockets 512;\n\
112
113
114
\n\
	/* DLV */\n\
	dnssec-lookaside . trust-anchor dlv.isc.org;\n\
115
116
117
118
\n\
	/* view */\n\
	allow-notify {none;};\n\
	allow-update-forwarding {none;};\n\
119
	allow-query-cache { localnets; localhost; };\n\
120
	allow-query-cache-on { any; };\n\
121
	allow-recursion { localnets; localhost; };\n\
122
	allow-recursion-on { any; };\n\
123
#	allow-v6-synthesis <obsolete>;\n\
124
125
126
#	sortlist <none>\n\
#	topology <none>\n\
	auth-nxdomain false;\n\
Bob Halley's avatar
Bob Halley committed
127
	minimal-responses false;\n\
128
129
130
131
132
133
134
135
136
137
138
	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\
139
	cleaning-interval 0;  /* now meaningless */\n\
140
141
142
143
144
	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\
145
	max-cache-size 0;\n\
146
147
	check-names master fail;\n\
	check-names slave warn;\n\
148
	check-names response ignore;\n\
149
	check-mx warn;\n\
150
	acache-enable no;\n\
151
	acache-cleaning-interval 60;\n\
152
	max-acache-size 16M;\n\
153
	dnssec-enable yes;\n\
154
	dnssec-validation yes; \n\
155
	dnssec-accept-expired no;\n\
156
157
	clients-per-query 10;\n\
	max-clients-per-query 100;\n\
158
	zero-no-soa-ttl-cache no;\n\
159
	nsec3-test-zone no;\n\
Mark Andrews's avatar
Mark Andrews committed
160
"
161
162
163
164
#ifdef ALLOW_FILTER_AAAA_ON_V4
"	filter-aaaa-on-v4 no;\n\
"
#endif
Mark Andrews's avatar
Mark Andrews committed
165
166

"	/* zone */\n\
167
	allow-query {any;};\n\
168
	allow-query-on {any;};\n\
169
170
171
	allow-transfer {any;};\n\
	notify yes;\n\
#	also-notify <none>\n\
172
	notify-delay 5;\n\
173
	notify-to-soa no;\n\
174
175
176
177
178
179
180
	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\
181
	alt-transfer-source *;\n\
182
	alt-transfer-source-v6 *;\n\
183
184
185
186
	max-transfer-time-in 120;\n\
	max-transfer-time-out 120;\n\
	max-transfer-idle-in 60;\n\
	max-transfer-idle-out 60;\n\
187
188
189
190
	max-retry-time 1209600; /* 2 weeks */\n\
	min-retry-time 500;\n\
	max-refresh-time 2419200; /* 4 weeks */\n\
	min-refresh-time 300;\n\
191
	multi-master no;\n\
192
	secure-to-insecure no;\n\
193
	sig-validity-interval 30; /* days */\n\
194
195
	sig-signing-nodes 100;\n\
	sig-signing-signatures 10;\n\
196
	sig-signing-type 65534;\n\
197
	zone-statistics false;\n\
198
	max-journal-size unlimited;\n\
199
	ixfr-from-differences false;\n\
200
	check-wildcard yes;\n\
201
202
	check-sibling yes;\n\
	check-integrity yes;\n\
203
204
	check-mx-cname warn;\n\
	check-srv-cname warn;\n\
205
	zero-no-soa-ttl yes;\n\
206
	update-check-ksk yes;\n\
207
	dnskey-ksk-only no;\n\
208
	try-tcp-refresh yes; /* BIND 8 compat */\n\
209
};\n\
Mark Andrews's avatar
Mark Andrews committed
210
211
212
"

"#\n\
Mark Andrews's avatar
Mark Andrews committed
213
#  Zones in the \"_bind\" view are NOT counted in the count of zones.\n\
214
#\n\
215
216
view \"_bind\" chaos {\n\
	recursion no;\n\
217
	notify no;\n\
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
\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\
233
\n\
234
235
236
237
	zone \"id.server\" chaos {\n\
		type master;\n\
		database \"_builtin id\";\n\
	};\n\
238
};\n\
239
240
"

241
242
243
244
245
246
247
248
249
250
251
"#\n\
#  The \"_meta\" view is for zones that are used to store internal\n\
#  information for named, such as managed keys.  The zones are defined\n\
#  elsewhere.\n\
#\n\
view \"_meta\" in {\n\
	recursion no;\n\
	notify no;\n\
};\n\
"

252
253
254
255
256
"#\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\
257
# BEGIN MANAGED KEYS\n"
258
259

/* Imported from bind.keys.h: */
260
MANAGED_KEYS
261

262
"# END MANAGED KEYS\n\
263
";
264
265
266
267
268
269
270
271
272
273
274

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
275
ns_config_get(const cfg_obj_t **maps, const char *name, const cfg_obj_t **obj) {
276
277
	int i;

278
	for (i = 0;; i++) {
279
280
281
282
283
284
285
		if (maps[i] == NULL)
			return (ISC_R_NOTFOUND);
		if (cfg_map_get(maps[i], name, obj) == ISC_R_SUCCESS)
			return (ISC_R_SUCCESS);
	}
}

286
isc_result_t
287
288
289
290
291
292
293
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;
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
	int i;

	for (i = 0;; i++) {
		if (maps[i] == NULL)
			return (ISC_R_NOTFOUND);
		checknames = NULL;
		if (cfg_map_get(maps[i], "check-names", &checknames) == ISC_R_SUCCESS) {
			/*
			 * 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");
				if (strcasecmp(cfg_obj_asstring(type), which) == 0) {
					*obj = cfg_tuple_get(value, "mode");
					return (ISC_R_SUCCESS);
				}
			}

		}
	}
}

323
int
324
325
ns_config_listcount(const cfg_obj_t *list) {
	const cfg_listelt_t *e;
326
327
328
329
330
331
332
333
334
	int i = 0;

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

	return (i);
}

isc_result_t
335
ns_config_getclass(const cfg_obj_t *classobj, dns_rdataclass_t defclass,
336
		   dns_rdataclass_t *classp) {
337
	isc_textregion_t r;
338
	isc_result_t result;
339
340

	if (!cfg_obj_isstring(classobj)) {
341
		*classp = defclass;
342
343
		return (ISC_R_SUCCESS);
	}
344
345
	DE_CONST(cfg_obj_asstring(classobj), r.base);
	r.length = strlen(r.base);
346
347
348
	result = dns_rdataclass_fromtext(classp, &r);
	if (result != ISC_R_SUCCESS)
		cfg_obj_log(classobj, ns_g_lctx, ISC_LOG_ERROR,
349
			    "unknown class '%s'", r.base);
350
	return (result);
351
352
}

353
isc_result_t
354
ns_config_gettype(const cfg_obj_t *typeobj, dns_rdatatype_t deftype,
355
356
357
358
359
360
361
362
		   dns_rdatatype_t *typep) {
	isc_textregion_t r;
	isc_result_t result;

	if (!cfg_obj_isstring(typeobj)) {
		*typep = deftype;
		return (ISC_R_SUCCESS);
	}
363
364
	DE_CONST(cfg_obj_asstring(typeobj), r.base);
	r.length = strlen(r.base);
365
366
367
	result = dns_rdatatype_fromtext(typep, &r);
	if (result != ISC_R_SUCCESS)
		cfg_obj_log(typeobj, ns_g_lctx, ISC_LOG_ERROR,
368
			    "unknown type '%s'", r.base);
369
370
371
	return (result);
}

372
dns_zonetype_t
373
ns_config_getzonetype(const cfg_obj_t *zonetypeobj) {
374
	dns_zonetype_t ztype = dns_zone_none;
375
	const char *str;
376
377

	str = cfg_obj_asstring(zonetypeobj);
378
	if (strcasecmp(str, "master") == 0)
379
		ztype = dns_zone_master;
380
	else if (strcasecmp(str, "slave") == 0)
381
		ztype = dns_zone_slave;
382
	else if (strcasecmp(str, "stub") == 0)
383
384
385
386
387
388
389
		ztype = dns_zone_stub;
	else
		INSIST(0);
	return (ztype);
}

isc_result_t
390
ns_config_getiplist(const cfg_obj_t *config, const cfg_obj_t *list,
391
392
393
394
		    in_port_t defport, isc_mem_t *mctx,
		    isc_sockaddr_t **addrsp, isc_uint32_t *countp)
{
	int count, i = 0;
395
396
397
	const cfg_obj_t *addrlist;
	const cfg_obj_t *portobj;
	const cfg_listelt_t *element;
398
399
400
401
402
	isc_sockaddr_t *addrs;
	in_port_t port;
	isc_result_t result;

	INSIST(addrsp != NULL && *addrsp == NULL);
403
	INSIST(countp != NULL);
404
405
406
407
408
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

	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;
}

456
static isc_result_t
457
get_masters_def(const cfg_obj_t *cctx, const char *name,
Automatic Updater's avatar
Automatic Updater committed
458
		const cfg_obj_t **ret)
459
{
460
	isc_result_t result;
461
462
	const cfg_obj_t *masters = NULL;
	const cfg_listelt_t *elt;
463
464
465
466
467
468
469

	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)) {
470
		const cfg_obj_t *list;
471
472
473
474
475
476
477
478
479
480
481
482
483
		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);
}

484
isc_result_t
485
486
487
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)
488
{
489
490
491
	isc_uint32_t addrcount = 0, keycount = 0, i = 0;
	isc_uint32_t listcount = 0, l = 0, j;
	isc_uint32_t stackcount = 0, pushed = 0;
492
	isc_result_t result;
493
494
495
	const cfg_listelt_t *element;
	const cfg_obj_t *addrlist;
	const cfg_obj_t *portobj;
496
497
498
499
	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
500
	struct { const char *name; } *lists = NULL;
501
	struct {
502
		const cfg_listelt_t *element;
503
504
		in_port_t port;
	} *stack = NULL;
505

506
507
508
	REQUIRE(addrsp != NULL && *addrsp == NULL);
	REQUIRE(keysp != NULL && *keysp == NULL);
	REQUIRE(countp != NULL);
509

510
 newlist:
511
512
513
514
515
516
517
	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);
518
519
			result = ISC_R_RANGE;
			goto cleanup;
520
521
522
523
524
		}
		port = (in_port_t) val;
	} else {
		result = ns_config_getport(config, &port);
		if (result != ISC_R_SUCCESS)
525
			goto cleanup;
526
527
528
529
	}

	result = ISC_R_NOMEMORY;

530
531
532
	element = cfg_list_first(addrlist);
 resume:
	for ( ;
533
	     element != NULL;
534
	     element = cfg_list_next(element))
535
	{
536
537
		const cfg_obj_t *addr;
		const cfg_obj_t *key;
538
		const char *keystr;
539
540
		isc_buffer_t b;

541
542
		addr = cfg_tuple_get(cfg_listelt_value(element),
				     "masterselement");
543
544
		key = cfg_tuple_get(cfg_listelt_value(element), "key");

545
		if (!cfg_obj_issockaddr(addr)) {
546
			const char *listname = cfg_obj_asstring(addr);
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
			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
569
				if (strcasecmp(lists[j].name, listname) == 0)
570
571
572
573
574
575
					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
576
				    "masters \"%s\" not found", listname);
577
578
579
580
581
582

				result = tresult;
				goto cleanup;
			}
			if (tresult != ISC_R_SUCCESS)
				goto cleanup;
Mark Andrews's avatar
Mark Andrews committed
583
			lists[l++].name = listname;
584
585
586
587
588
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
			/* 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) {
635
636
				memcpy(new, keys, oldsize);
				isc_mem_put(mctx, keys, oldsize);
637
638
639
640
641
			}
			keys = new;
			keycount = newlen;
		}

642
643
644
645
		addrs[i] = *cfg_obj_assockaddr(addr);
		if (isc_sockaddr_getport(&addrs[i]) == 0)
			isc_sockaddr_setport(&addrs[i], port);
		keys[i] = NULL;
646
647
		if (!cfg_obj_isstring(key)) {
			i++;
648
			continue;
649
		}
650
651
652
653
		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
654

655
656
657
658
659
		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,
660
					   dns_rootname, 0, NULL);
661
662
663
664
665
666
		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;
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
		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;
688
		isc_mem_put(mctx, addrs, oldsize);
689
690
691
692
693
694
695
696
697
698
699
700
		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;
701
		isc_mem_put(mctx, keys, oldsize);
702
703
		keys = new;
		keycount = i;
704
	}
705
706
707
708
709

	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
710

711
	INSIST(keycount == addrcount);
712
713
714

	*addrsp = addrs;
	*keysp = keys;
715
	*countp = addrcount;
716
717
718
719
720

	return (ISC_R_SUCCESS);

 cleanup:
	if (addrs != NULL)
721
		isc_mem_put(mctx, addrs, addrcount * sizeof(isc_sockaddr_t));
722
	if (keys != NULL) {
723
		for (j = 0; j <= i; j++) {
724
725
726
727
728
729
			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));
		}
730
		isc_mem_put(mctx, keys, keycount * sizeof(dns_name_t *));
731
	}
732
733
734
735
	if (lists != NULL)
		isc_mem_put(mctx, lists, listcount * sizeof(*lists));
	if (stack != NULL)
		isc_mem_put(mctx, stack, stackcount * sizeof(*stack));
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
	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
762
763
764
765
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;
766
767
768
	isc_result_t result;
	int i;

769
	(void)cfg_map_get(config, "options", &options);
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
	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
787

788
789
790
791
struct keyalgorithms {
	const char *str;
	enum { hmacnone, hmacmd5, hmacsha1, hmacsha224,
	       hmacsha256, hmacsha384, hmacsha512 } hmac;
792
	unsigned int type;
793
794
	isc_uint16_t size;
} algorithms[] = {
795
796
797
798
799
800
801
802
803
	{ "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 }
804
805
};

Brian Wellington's avatar
Brian Wellington committed
806
isc_result_t
807
808
ns_config_getkeyalgorithm(const char *str, dns_name_t **name,
			  isc_uint16_t *digestbits)
809
810
811
812
813
814
815
{
	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
816
{
817
818
819
820
821
822
823
824
825
826
827
	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
828
	}
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
	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);
		}
	}
854
855
	if (typep != NULL)
		*typep = algorithms[i].type;
856
857
858
	if (digestbits != NULL)
		*digestbits = bits;
	return (ISC_R_SUCCESS);
Brian Wellington's avatar
Brian Wellington committed
859
}