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 1.103 2009/10/10 01:47:59 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
"

"	/* zone */\n\
163
	allow-query {any;};\n\
164
	allow-query-on {any;};\n\
165
166
167
	allow-transfer {any;};\n\
	notify yes;\n\
#	also-notify <none>\n\
168
	notify-delay 5;\n\
169
	notify-to-soa no;\n\
170
171
172
173
174
175
176
	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\
177
	alt-transfer-source *;\n\
178
	alt-transfer-source-v6 *;\n\
179
180
181
182
	max-transfer-time-in 120;\n\
	max-transfer-time-out 120;\n\
	max-transfer-idle-in 60;\n\
	max-transfer-idle-out 60;\n\
183
184
185
186
	max-retry-time 1209600; /* 2 weeks */\n\
	min-retry-time 500;\n\
	max-refresh-time 2419200; /* 4 weeks */\n\
	min-refresh-time 300;\n\
187
	multi-master no;\n\
188
	secure-to-insecure no;\n\
189
	sig-validity-interval 30; /* days */\n\
190
191
	sig-signing-nodes 100;\n\
	sig-signing-signatures 10;\n\
192
	sig-signing-type 65534;\n\
193
	zone-statistics false;\n\
194
	max-journal-size unlimited;\n\
195
	ixfr-from-differences false;\n\
196
	check-wildcard yes;\n\
197
198
	check-sibling yes;\n\
	check-integrity yes;\n\
199
200
	check-mx-cname warn;\n\
	check-srv-cname warn;\n\
201
	zero-no-soa-ttl yes;\n\
202
	update-check-ksk yes;\n\
203
	dnskey-ksk-only no;\n\
204
	try-tcp-refresh yes; /* BIND 8 compat */\n\
205
};\n\
Mark Andrews's avatar
Mark Andrews committed
206
207
208
"

"#\n\
Mark Andrews's avatar
Mark Andrews committed
209
#  Zones in the \"_bind\" view are NOT counted in the count of zones.\n\
210
#\n\
211
212
view \"_bind\" chaos {\n\
	recursion no;\n\
213
	notify no;\n\
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
\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\
229
\n\
230
231
232
233
	zone \"id.server\" chaos {\n\
		type master;\n\
		database \"_builtin id\";\n\
	};\n\
234
};\n\
235
236
"

237
238
239
240
241
242
243
244
245
246
247
"#\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\
"

248
249
250
251
252
"#\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\
253
# BEGIN MANAGED KEYS\n"
254
255

/* Imported from bind.keys.h: */
256
MANAGED_KEYS
257

258
"# END MANAGED KEYS\n\
259
";
260
261
262
263
264
265
266
267
268
269
270

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
271
ns_config_get(const cfg_obj_t **maps, const char *name, const cfg_obj_t **obj) {
272
273
	int i;

274
	for (i = 0;; i++) {
275
276
277
278
279
280
281
		if (maps[i] == NULL)
			return (ISC_R_NOTFOUND);
		if (cfg_map_get(maps[i], name, obj) == ISC_R_SUCCESS)
			return (ISC_R_SUCCESS);
	}
}

282
isc_result_t
283
284
285
286
287
288
289
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;
290
291
292
293
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
	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);
				}
			}

		}
	}
}

319
int
320
321
ns_config_listcount(const cfg_obj_t *list) {
	const cfg_listelt_t *e;
322
323
324
325
326
327
328
329
330
	int i = 0;

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

	return (i);
}

isc_result_t
331
ns_config_getclass(const cfg_obj_t *classobj, dns_rdataclass_t defclass,
332
		   dns_rdataclass_t *classp) {
333
	isc_textregion_t r;
334
	isc_result_t result;
335
336

	if (!cfg_obj_isstring(classobj)) {
337
		*classp = defclass;
338
339
		return (ISC_R_SUCCESS);
	}
340
341
	DE_CONST(cfg_obj_asstring(classobj), r.base);
	r.length = strlen(r.base);
342
343
344
	result = dns_rdataclass_fromtext(classp, &r);
	if (result != ISC_R_SUCCESS)
		cfg_obj_log(classobj, ns_g_lctx, ISC_LOG_ERROR,
345
			    "unknown class '%s'", r.base);
346
	return (result);
347
348
}

349
isc_result_t
350
ns_config_gettype(const cfg_obj_t *typeobj, dns_rdatatype_t deftype,
351
352
353
354
355
356
357
358
		   dns_rdatatype_t *typep) {
	isc_textregion_t r;
	isc_result_t result;

	if (!cfg_obj_isstring(typeobj)) {
		*typep = deftype;
		return (ISC_R_SUCCESS);
	}
359
360
	DE_CONST(cfg_obj_asstring(typeobj), r.base);
	r.length = strlen(r.base);
361
362
363
	result = dns_rdatatype_fromtext(typep, &r);
	if (result != ISC_R_SUCCESS)
		cfg_obj_log(typeobj, ns_g_lctx, ISC_LOG_ERROR,
364
			    "unknown type '%s'", r.base);
365
366
367
	return (result);
}

368
dns_zonetype_t
369
ns_config_getzonetype(const cfg_obj_t *zonetypeobj) {
370
	dns_zonetype_t ztype = dns_zone_none;
371
	const char *str;
372
373

	str = cfg_obj_asstring(zonetypeobj);
374
	if (strcasecmp(str, "master") == 0)
375
		ztype = dns_zone_master;
376
	else if (strcasecmp(str, "slave") == 0)
377
		ztype = dns_zone_slave;
378
	else if (strcasecmp(str, "stub") == 0)
379
380
381
382
383
384
385
		ztype = dns_zone_stub;
	else
		INSIST(0);
	return (ztype);
}

isc_result_t
386
ns_config_getiplist(const cfg_obj_t *config, const cfg_obj_t *list,
387
388
389
390
		    in_port_t defport, isc_mem_t *mctx,
		    isc_sockaddr_t **addrsp, isc_uint32_t *countp)
{
	int count, i = 0;
391
392
393
	const cfg_obj_t *addrlist;
	const cfg_obj_t *portobj;
	const cfg_listelt_t *element;
394
395
396
397
398
	isc_sockaddr_t *addrs;
	in_port_t port;
	isc_result_t result;

	INSIST(addrsp != NULL && *addrsp == NULL);
399
	INSIST(countp != NULL);
400
401
402
403
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

	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;
}

452
static isc_result_t
453
get_masters_def(const cfg_obj_t *cctx, const char *name,
Automatic Updater's avatar
Automatic Updater committed
454
		const cfg_obj_t **ret)
455
{
456
	isc_result_t result;
457
458
	const cfg_obj_t *masters = NULL;
	const cfg_listelt_t *elt;
459
460
461
462
463
464
465

	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)) {
466
		const cfg_obj_t *list;
467
468
469
470
471
472
473
474
475
476
477
478
479
		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);
}

480
isc_result_t
481
482
483
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)
484
{
485
486
487
	isc_uint32_t addrcount = 0, keycount = 0, i = 0;
	isc_uint32_t listcount = 0, l = 0, j;
	isc_uint32_t stackcount = 0, pushed = 0;
488
	isc_result_t result;
489
490
491
	const cfg_listelt_t *element;
	const cfg_obj_t *addrlist;
	const cfg_obj_t *portobj;
492
493
494
495
	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
496
	struct { const char *name; } *lists = NULL;
497
	struct {
498
		const cfg_listelt_t *element;
499
500
		in_port_t port;
	} *stack = NULL;
501

502
503
504
	REQUIRE(addrsp != NULL && *addrsp == NULL);
	REQUIRE(keysp != NULL && *keysp == NULL);
	REQUIRE(countp != NULL);
505

506
 newlist:
507
508
509
510
511
512
513
	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);
514
515
			result = ISC_R_RANGE;
			goto cleanup;
516
517
518
519
520
		}
		port = (in_port_t) val;
	} else {
		result = ns_config_getport(config, &port);
		if (result != ISC_R_SUCCESS)
521
			goto cleanup;
522
523
524
525
	}

	result = ISC_R_NOMEMORY;

526
527
528
	element = cfg_list_first(addrlist);
 resume:
	for ( ;
529
	     element != NULL;
530
	     element = cfg_list_next(element))
531
	{
532
533
		const cfg_obj_t *addr;
		const cfg_obj_t *key;
534
		const char *keystr;
535
536
		isc_buffer_t b;

537
538
		addr = cfg_tuple_get(cfg_listelt_value(element),
				     "masterselement");
539
540
		key = cfg_tuple_get(cfg_listelt_value(element), "key");

541
		if (!cfg_obj_issockaddr(addr)) {
542
			const char *listname = cfg_obj_asstring(addr);
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
			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
565
				if (strcasecmp(lists[j].name, listname) == 0)
566
567
568
569
570
571
					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
572
				    "masters \"%s\" not found", listname);
573
574
575
576
577
578

				result = tresult;
				goto cleanup;
			}
			if (tresult != ISC_R_SUCCESS)
				goto cleanup;
Mark Andrews's avatar
Mark Andrews committed
579
			lists[l++].name = listname;
580
581
582
583
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
			/* 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) {
631
632
				memcpy(new, keys, oldsize);
				isc_mem_put(mctx, keys, oldsize);
633
634
635
636
637
			}
			keys = new;
			keycount = newlen;
		}

638
639
640
641
		addrs[i] = *cfg_obj_assockaddr(addr);
		if (isc_sockaddr_getport(&addrs[i]) == 0)
			isc_sockaddr_setport(&addrs[i], port);
		keys[i] = NULL;
642
643
		if (!cfg_obj_isstring(key)) {
			i++;
644
			continue;
645
		}
646
647
648
649
		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
650

651
652
653
654
655
		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,
656
					   dns_rootname, 0, NULL);
657
658
659
660
661
662
		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;
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
		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;
684
		isc_mem_put(mctx, addrs, oldsize);
685
686
687
688
689
690
691
692
693
694
695
696
		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;
697
		isc_mem_put(mctx, keys, oldsize);
698
699
		keys = new;
		keycount = i;
700
	}
701
702
703
704
705

	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
706

707
	INSIST(keycount == addrcount);
708
709
710

	*addrsp = addrs;
	*keysp = keys;
711
	*countp = addrcount;
712
713
714
715
716

	return (ISC_R_SUCCESS);

 cleanup:
	if (addrs != NULL)
717
		isc_mem_put(mctx, addrs, addrcount * sizeof(isc_sockaddr_t));
718
	if (keys != NULL) {
719
		for (j = 0; j <= i; j++) {
720
721
722
723
724
725
			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));
		}
726
		isc_mem_put(mctx, keys, keycount * sizeof(dns_name_t *));
727
	}
728
729
730
731
	if (lists != NULL)
		isc_mem_put(mctx, lists, listcount * sizeof(*lists));
	if (stack != NULL)
		isc_mem_put(mctx, stack, stackcount * sizeof(*stack));
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
	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
758
759
760
761
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;
762
763
764
	isc_result_t result;
	int i;

765
	(void)cfg_map_get(config, "options", &options);
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
	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
783

784
785
786
787
struct keyalgorithms {
	const char *str;
	enum { hmacnone, hmacmd5, hmacsha1, hmacsha224,
	       hmacsha256, hmacsha384, hmacsha512 } hmac;
788
	unsigned int type;
789
790
	isc_uint16_t size;
} algorithms[] = {
791
792
793
794
795
796
797
798
799
	{ "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 }
800
801
};

Brian Wellington's avatar
Brian Wellington committed
802
isc_result_t
803
804
ns_config_getkeyalgorithm(const char *str, dns_name_t **name,
			  isc_uint16_t *digestbits)
805
806
807
808
809
810
811
{
	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
812
{
813
814
815
816
817
818
819
820
821
822
823
	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
824
	}
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
	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);
		}
	}
850
851
	if (typep != NULL)
		*typep = algorithms[i].type;
852
853
854
	if (digestbits != NULL)
		*digestbits = bits;
	return (ISC_R_SUCCESS);
Brian Wellington's avatar
Brian Wellington committed
855
}