config.c 21.2 KB
Newer Older
1
/*
Automatic Updater's avatar
Automatic Updater committed
2
 * Copyright (C) 2004-2010  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 1.112 2010/08/11 18:14:18 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
	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
	rrset-order {type NS order random; order cyclic; };\n\
93
	serial-queries 20;\n\
94
	serial-query-rate 20;\n\
95
	server-id none;\n\
96
	statistics-file \"named.stats\";\n\
97
	statistics-interval 60;\n\
98
	tcp-clients 100;\n\
Michael Graff's avatar
Michael Graff committed
99
	tcp-listen-queue 3;\n\
100 101 102 103 104 105 106 107 108
#	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\
109
	edns-udp-size 4096;\n\
110
	max-udp-size 4096;\n\
111
	request-nsid false;\n\
112
	reserved-sockets 512;\n\
113 114 115
\n\
	/* DLV */\n\
	dnssec-lookaside . trust-anchor dlv.isc.org;\n\
116 117 118 119
\n\
	/* view */\n\
	allow-notify {none;};\n\
	allow-update-forwarding {none;};\n\
120
	allow-query-cache { localnets; localhost; };\n\
121
	allow-query-cache-on { any; };\n\
122
	allow-recursion { localnets; localhost; };\n\
123
	allow-recursion-on { any; };\n\
124
#	allow-v6-synthesis <obsolete>;\n\
125 126 127
#	sortlist <none>\n\
#	topology <none>\n\
	auth-nxdomain false;\n\
Bob Halley's avatar
Bob Halley committed
128
	minimal-responses false;\n\
129 130 131 132 133 134 135 136 137 138 139
	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\
140
	cleaning-interval 0;  /* now meaningless */\n\
141 142 143 144 145
	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\
146
	max-cache-size 0;\n\
147 148
	check-names master fail;\n\
	check-names slave warn;\n\
149
	check-names response ignore;\n\
150
	check-dup-records warn;\n\
151
	check-mx warn;\n\
152
	acache-enable no;\n\
153
	acache-cleaning-interval 60;\n\
154
	max-acache-size 16M;\n\
155
	dnssec-enable yes;\n\
156
	dnssec-validation yes; \n\
157
	dnssec-accept-expired no;\n\
158 159
	clients-per-query 10;\n\
	max-clients-per-query 100;\n\
160
	zero-no-soa-ttl-cache no;\n\
161
	nsec3-test-zone no;\n\
162
	allow-new-zones no;\n\
Mark Andrews's avatar
Mark Andrews committed
163
"
164 165
#ifdef ALLOW_FILTER_AAAA_ON_V4
"	filter-aaaa-on-v4 no;\n\
Automatic Updater's avatar
Automatic Updater committed
166
	filter-aaaa { any; };\n\
167 168
"
#endif
Mark Andrews's avatar
Mark Andrews committed
169 170

"	/* zone */\n\
171
	allow-query {any;};\n\
172
	allow-query-on {any;};\n\
173 174 175
	allow-transfer {any;};\n\
	notify yes;\n\
#	also-notify <none>\n\
176
	notify-delay 5;\n\
177
	notify-to-soa no;\n\
178 179 180 181 182 183 184
	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\
185
	alt-transfer-source *;\n\
186
	alt-transfer-source-v6 *;\n\
187 188 189 190
	max-transfer-time-in 120;\n\
	max-transfer-time-out 120;\n\
	max-transfer-idle-in 60;\n\
	max-transfer-idle-out 60;\n\
191 192 193 194
	max-retry-time 1209600; /* 2 weeks */\n\
	min-retry-time 500;\n\
	max-refresh-time 2419200; /* 4 weeks */\n\
	min-refresh-time 300;\n\
195
	multi-master no;\n\
196
	dnssec-secure-to-insecure no;\n\
197
	sig-validity-interval 30; /* days */\n\
198 199
	sig-signing-nodes 100;\n\
	sig-signing-signatures 10;\n\
200
	sig-signing-type 65534;\n\
201
	zone-statistics false;\n\
202
	max-journal-size unlimited;\n\
203
	ixfr-from-differences false;\n\
204
	check-wildcard yes;\n\
205 206
	check-sibling yes;\n\
	check-integrity yes;\n\
207 208
	check-mx-cname warn;\n\
	check-srv-cname warn;\n\
209
	zero-no-soa-ttl yes;\n\
210
	update-check-ksk yes;\n\
211
	dnssec-dnskey-kskonly no;\n\
212
	try-tcp-refresh yes; /* BIND 8 compat */\n\
213
};\n\
Mark Andrews's avatar
Mark Andrews committed
214 215 216
"

"#\n\
Mark Andrews's avatar
Mark Andrews committed
217
#  Zones in the \"_bind\" view are NOT counted in the count of zones.\n\
218
#\n\
219 220
view \"_bind\" chaos {\n\
	recursion no;\n\
221
	notify no;\n\
222
	allow-new-zones no;\n\
223 224 225 226 227 228 229 230 231 232 233 234 235 236 237
\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\
238
\n\
239 240 241 242
	zone \"id.server\" chaos {\n\
		type master;\n\
		database \"_builtin id\";\n\
	};\n\
243
};\n\
244 245 246 247 248 249
"
"#\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\
250
# BEGIN MANAGED KEYS\n"
251 252

/* Imported from bind.keys.h: */
253
MANAGED_KEYS
254

255
"# END MANAGED KEYS\n\
256
";
257 258 259 260 261 262 263 264 265 266 267

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
268
ns_config_get(const cfg_obj_t **maps, const char *name, const cfg_obj_t **obj) {
269 270
	int i;

271
	for (i = 0;; i++) {
272 273 274 275 276 277 278
		if (maps[i] == NULL)
			return (ISC_R_NOTFOUND);
		if (cfg_map_get(maps[i], name, obj) == ISC_R_SUCCESS)
			return (ISC_R_SUCCESS);
	}
}

279
isc_result_t
280 281 282 283 284 285 286
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;
287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315
	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);
				}
			}

		}
	}
}

316
int
317 318
ns_config_listcount(const cfg_obj_t *list) {
	const cfg_listelt_t *e;
319 320 321 322 323 324 325 326 327
	int i = 0;

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

	return (i);
}

isc_result_t
328
ns_config_getclass(const cfg_obj_t *classobj, dns_rdataclass_t defclass,
329
		   dns_rdataclass_t *classp) {
330
	isc_textregion_t r;
331
	isc_result_t result;
332 333

	if (!cfg_obj_isstring(classobj)) {
334
		*classp = defclass;
335 336
		return (ISC_R_SUCCESS);
	}
337 338
	DE_CONST(cfg_obj_asstring(classobj), r.base);
	r.length = strlen(r.base);
339 340 341
	result = dns_rdataclass_fromtext(classp, &r);
	if (result != ISC_R_SUCCESS)
		cfg_obj_log(classobj, ns_g_lctx, ISC_LOG_ERROR,
342
			    "unknown class '%s'", r.base);
343
	return (result);
344 345
}

346
isc_result_t
347
ns_config_gettype(const cfg_obj_t *typeobj, dns_rdatatype_t deftype,
348 349 350 351 352 353 354 355
		   dns_rdatatype_t *typep) {
	isc_textregion_t r;
	isc_result_t result;

	if (!cfg_obj_isstring(typeobj)) {
		*typep = deftype;
		return (ISC_R_SUCCESS);
	}
356 357
	DE_CONST(cfg_obj_asstring(typeobj), r.base);
	r.length = strlen(r.base);
358 359 360
	result = dns_rdatatype_fromtext(typep, &r);
	if (result != ISC_R_SUCCESS)
		cfg_obj_log(typeobj, ns_g_lctx, ISC_LOG_ERROR,
361
			    "unknown type '%s'", r.base);
362 363 364
	return (result);
}

365
dns_zonetype_t
366
ns_config_getzonetype(const cfg_obj_t *zonetypeobj) {
367
	dns_zonetype_t ztype = dns_zone_none;
368
	const char *str;
369 370

	str = cfg_obj_asstring(zonetypeobj);
371
	if (strcasecmp(str, "master") == 0)
372
		ztype = dns_zone_master;
373
	else if (strcasecmp(str, "slave") == 0)
374
		ztype = dns_zone_slave;
375
	else if (strcasecmp(str, "stub") == 0)
376 377 378 379 380 381 382
		ztype = dns_zone_stub;
	else
		INSIST(0);
	return (ztype);
}

isc_result_t
383
ns_config_getiplist(const cfg_obj_t *config, const cfg_obj_t *list,
384 385 386 387
		    in_port_t defport, isc_mem_t *mctx,
		    isc_sockaddr_t **addrsp, isc_uint32_t *countp)
{
	int count, i = 0;
388 389 390
	const cfg_obj_t *addrlist;
	const cfg_obj_t *portobj;
	const cfg_listelt_t *element;
391 392 393 394 395
	isc_sockaddr_t *addrs;
	in_port_t port;
	isc_result_t result;

	INSIST(addrsp != NULL && *addrsp == NULL);
396
	INSIST(countp != NULL);
397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448

	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;
}

449
static isc_result_t
450
get_masters_def(const cfg_obj_t *cctx, const char *name,
Automatic Updater's avatar
Automatic Updater committed
451
		const cfg_obj_t **ret)
452
{
453
	isc_result_t result;
454 455
	const cfg_obj_t *masters = NULL;
	const cfg_listelt_t *elt;
456 457 458 459 460 461 462

	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)) {
463
		const cfg_obj_t *list;
464 465 466 467 468 469 470 471 472 473 474 475 476
		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);
}

477
isc_result_t
478 479 480
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)
481
{
482 483 484
	isc_uint32_t addrcount = 0, keycount = 0, i = 0;
	isc_uint32_t listcount = 0, l = 0, j;
	isc_uint32_t stackcount = 0, pushed = 0;
485
	isc_result_t result;
486 487 488
	const cfg_listelt_t *element;
	const cfg_obj_t *addrlist;
	const cfg_obj_t *portobj;
489 490 491 492
	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
493
	struct { const char *name; } *lists = NULL;
494
	struct {
495
		const cfg_listelt_t *element;
496 497
		in_port_t port;
	} *stack = NULL;
498

499 500 501
	REQUIRE(addrsp != NULL && *addrsp == NULL);
	REQUIRE(keysp != NULL && *keysp == NULL);
	REQUIRE(countp != NULL);
502

503
 newlist:
504 505 506 507 508 509 510
	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);
511 512
			result = ISC_R_RANGE;
			goto cleanup;
513 514 515 516 517
		}
		port = (in_port_t) val;
	} else {
		result = ns_config_getport(config, &port);
		if (result != ISC_R_SUCCESS)
518
			goto cleanup;
519 520 521 522
	}

	result = ISC_R_NOMEMORY;

523 524 525
	element = cfg_list_first(addrlist);
 resume:
	for ( ;
526
	     element != NULL;
527
	     element = cfg_list_next(element))
528
	{
529 530
		const cfg_obj_t *addr;
		const cfg_obj_t *key;
531
		const char *keystr;
532 533
		isc_buffer_t b;

534 535
		addr = cfg_tuple_get(cfg_listelt_value(element),
				     "masterselement");
536 537
		key = cfg_tuple_get(cfg_listelt_value(element), "key");

538
		if (!cfg_obj_issockaddr(addr)) {
539
			const char *listname = cfg_obj_asstring(addr);
540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561
			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
562
				if (strcasecmp(lists[j].name, listname) == 0)
563 564 565 566 567 568
					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
569
				    "masters \"%s\" not found", listname);
570 571 572 573 574 575

				result = tresult;
				goto cleanup;
			}
			if (tresult != ISC_R_SUCCESS)
				goto cleanup;
Mark Andrews's avatar
Mark Andrews committed
576
			lists[l++].name = listname;
577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627
			/* 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) {
628 629
				memcpy(new, keys, oldsize);
				isc_mem_put(mctx, keys, oldsize);
630 631 632 633 634
			}
			keys = new;
			keycount = newlen;
		}

635 636 637 638
		addrs[i] = *cfg_obj_assockaddr(addr);
		if (isc_sockaddr_getport(&addrs[i]) == 0)
			isc_sockaddr_setport(&addrs[i], port);
		keys[i] = NULL;
639 640
		if (!cfg_obj_isstring(key)) {
			i++;
641
			continue;
642
		}
643 644 645 646
		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
647

648 649 650 651 652
		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,
653
					   dns_rootname, 0, NULL);
654 655 656 657 658 659
		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;
660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680
		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;
681
		isc_mem_put(mctx, addrs, oldsize);
682 683 684 685 686 687 688 689 690 691 692 693
		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;
694
		isc_mem_put(mctx, keys, oldsize);
695 696
		keys = new;
		keycount = i;
697
	}
698 699 700 701 702

	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
703

704
	INSIST(keycount == addrcount);
705 706 707

	*addrsp = addrs;
	*keysp = keys;
708
	*countp = addrcount;
709 710 711 712 713

	return (ISC_R_SUCCESS);

 cleanup:
	if (addrs != NULL)
714
		isc_mem_put(mctx, addrs, addrcount * sizeof(isc_sockaddr_t));
715
	if (keys != NULL) {
716
		for (j = 0; j <= i; j++) {
717 718 719 720 721 722
			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));
		}
723
		isc_mem_put(mctx, keys, keycount * sizeof(dns_name_t *));
724
	}
725 726 727 728
	if (lists != NULL)
		isc_mem_put(mctx, lists, listcount * sizeof(*lists));
	if (stack != NULL)
		isc_mem_put(mctx, stack, stackcount * sizeof(*stack));
729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754
	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
755 756 757 758
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;
759 760 761
	isc_result_t result;
	int i;

762
	(void)cfg_map_get(config, "options", &options);
763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779
	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
780

781 782 783 784
struct keyalgorithms {
	const char *str;
	enum { hmacnone, hmacmd5, hmacsha1, hmacsha224,
	       hmacsha256, hmacsha384, hmacsha512 } hmac;
785
	unsigned int type;
786 787
	isc_uint16_t size;
} algorithms[] = {
788 789 790 791 792 793 794 795 796
	{ "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 }
797 798
};

Brian Wellington's avatar
Brian Wellington committed
799
isc_result_t
800 801
ns_config_getkeyalgorithm(const char *str, dns_name_t **name,
			  isc_uint16_t *digestbits)
802 803 804 805 806 807 808
{
	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
809
{
810 811 812 813 814 815 816 817 818 819 820
	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
821
	}
822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846
	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);
		}
	}
847 848
	if (typep != NULL)
		*typep = algorithms[i].type;
849 850 851
	if (digestbits != NULL)
		*digestbits = bits;
	return (ISC_R_SUCCESS);
Brian Wellington's avatar
Brian Wellington committed
852
}