config.c 21.1 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 1.107 2010/05/14 04:48:28 marka 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-dup-records warn;\n\
150
	check-mx warn;\n\
151
	acache-enable no;\n\
152
	acache-cleaning-interval 60;\n\
153
	max-acache-size 16M;\n\
154
	dnssec-enable yes;\n\
155
	dnssec-validation yes; \n\
156
	dnssec-accept-expired no;\n\
157 158
	clients-per-query 10;\n\
	max-clients-per-query 100;\n\
159
	zero-no-soa-ttl-cache no;\n\
160
	nsec3-test-zone no;\n\
Mark Andrews's avatar
Mark Andrews committed
161
"
162 163 164 165
#ifdef ALLOW_FILTER_AAAA_ON_V4
"	filter-aaaa-on-v4 no;\n\
"
#endif
Mark Andrews's avatar
Mark Andrews committed
166 167

"	/* zone */\n\
168
	allow-query {any;};\n\
169
	allow-query-on {any;};\n\
170 171 172
	allow-transfer {any;};\n\
	notify yes;\n\
#	also-notify <none>\n\
173
	notify-delay 5;\n\
174
	notify-to-soa no;\n\
175 176 177 178 179 180 181
	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\
182
	alt-transfer-source *;\n\
183
	alt-transfer-source-v6 *;\n\
184 185 186 187
	max-transfer-time-in 120;\n\
	max-transfer-time-out 120;\n\
	max-transfer-idle-in 60;\n\
	max-transfer-idle-out 60;\n\
188 189 190 191
	max-retry-time 1209600; /* 2 weeks */\n\
	min-retry-time 500;\n\
	max-refresh-time 2419200; /* 4 weeks */\n\
	min-refresh-time 300;\n\
192
	multi-master no;\n\
193
	dnssec-secure-to-insecure no;\n\
194
	sig-validity-interval 30; /* days */\n\
195 196
	sig-signing-nodes 100;\n\
	sig-signing-signatures 10;\n\
197
	sig-signing-type 65534;\n\
198
	zone-statistics false;\n\
199
	max-journal-size unlimited;\n\
200
	ixfr-from-differences false;\n\
201
	check-wildcard yes;\n\
202 203
	check-sibling yes;\n\
	check-integrity yes;\n\
204 205
	check-mx-cname warn;\n\
	check-srv-cname warn;\n\
206
	zero-no-soa-ttl yes;\n\
207
	update-check-ksk yes;\n\
208
	dnssec-dnskey-kskonly no;\n\
209
	try-tcp-refresh yes; /* BIND 8 compat */\n\
210
};\n\
Mark Andrews's avatar
Mark Andrews committed
211 212 213
"

"#\n\
Mark Andrews's avatar
Mark Andrews committed
214
#  Zones in the \"_bind\" view are NOT counted in the count of zones.\n\
215
#\n\
216 217
view \"_bind\" chaos {\n\
	recursion no;\n\
218
	notify no;\n\
219 220 221 222 223 224 225 226 227 228 229 230 231 232 233
\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\
234
\n\
235 236 237 238
	zone \"id.server\" chaos {\n\
		type master;\n\
		database \"_builtin id\";\n\
	};\n\
239
};\n\
240 241 242 243 244 245
"
"#\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\
246
# BEGIN MANAGED KEYS\n"
247 248

/* Imported from bind.keys.h: */
249
MANAGED_KEYS
250

251
"# END MANAGED KEYS\n\
252
";
253 254 255 256 257 258 259 260 261 262 263

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
264
ns_config_get(const cfg_obj_t **maps, const char *name, const cfg_obj_t **obj) {
265 266
	int i;

267
	for (i = 0;; i++) {
268 269 270 271 272 273 274
		if (maps[i] == NULL)
			return (ISC_R_NOTFOUND);
		if (cfg_map_get(maps[i], name, obj) == ISC_R_SUCCESS)
			return (ISC_R_SUCCESS);
	}
}

275
isc_result_t
276 277 278 279 280 281 282
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;
283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311
	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);
				}
			}

		}
	}
}

312
int
313 314
ns_config_listcount(const cfg_obj_t *list) {
	const cfg_listelt_t *e;
315 316 317 318 319 320 321 322 323
	int i = 0;

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

	return (i);
}

isc_result_t
324
ns_config_getclass(const cfg_obj_t *classobj, dns_rdataclass_t defclass,
325
		   dns_rdataclass_t *classp) {
326
	isc_textregion_t r;
327
	isc_result_t result;
328 329

	if (!cfg_obj_isstring(classobj)) {
330
		*classp = defclass;
331 332
		return (ISC_R_SUCCESS);
	}
333 334
	DE_CONST(cfg_obj_asstring(classobj), r.base);
	r.length = strlen(r.base);
335 336 337
	result = dns_rdataclass_fromtext(classp, &r);
	if (result != ISC_R_SUCCESS)
		cfg_obj_log(classobj, ns_g_lctx, ISC_LOG_ERROR,
338
			    "unknown class '%s'", r.base);
339
	return (result);
340 341
}

342
isc_result_t
343
ns_config_gettype(const cfg_obj_t *typeobj, dns_rdatatype_t deftype,
344 345 346 347 348 349 350 351
		   dns_rdatatype_t *typep) {
	isc_textregion_t r;
	isc_result_t result;

	if (!cfg_obj_isstring(typeobj)) {
		*typep = deftype;
		return (ISC_R_SUCCESS);
	}
352 353
	DE_CONST(cfg_obj_asstring(typeobj), r.base);
	r.length = strlen(r.base);
354 355 356
	result = dns_rdatatype_fromtext(typep, &r);
	if (result != ISC_R_SUCCESS)
		cfg_obj_log(typeobj, ns_g_lctx, ISC_LOG_ERROR,
357
			    "unknown type '%s'", r.base);
358 359 360
	return (result);
}

361
dns_zonetype_t
362
ns_config_getzonetype(const cfg_obj_t *zonetypeobj) {
363
	dns_zonetype_t ztype = dns_zone_none;
364
	const char *str;
365 366

	str = cfg_obj_asstring(zonetypeobj);
367
	if (strcasecmp(str, "master") == 0)
368
		ztype = dns_zone_master;
369
	else if (strcasecmp(str, "slave") == 0)
370
		ztype = dns_zone_slave;
371
	else if (strcasecmp(str, "stub") == 0)
372 373 374 375 376 377 378
		ztype = dns_zone_stub;
	else
		INSIST(0);
	return (ztype);
}

isc_result_t
379
ns_config_getiplist(const cfg_obj_t *config, const cfg_obj_t *list,
380 381 382 383
		    in_port_t defport, isc_mem_t *mctx,
		    isc_sockaddr_t **addrsp, isc_uint32_t *countp)
{
	int count, i = 0;
384 385 386
	const cfg_obj_t *addrlist;
	const cfg_obj_t *portobj;
	const cfg_listelt_t *element;
387 388 389 390 391
	isc_sockaddr_t *addrs;
	in_port_t port;
	isc_result_t result;

	INSIST(addrsp != NULL && *addrsp == NULL);
392
	INSIST(countp != NULL);
393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444

	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;
}

445
static isc_result_t
446
get_masters_def(const cfg_obj_t *cctx, const char *name,
Automatic Updater's avatar
Automatic Updater committed
447
		const cfg_obj_t **ret)
448
{
449
	isc_result_t result;
450 451
	const cfg_obj_t *masters = NULL;
	const cfg_listelt_t *elt;
452 453 454 455 456 457 458

	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)) {
459
		const cfg_obj_t *list;
460 461 462 463 464 465 466 467 468 469 470 471 472
		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);
}

473
isc_result_t
474 475 476
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)
477
{
478 479 480
	isc_uint32_t addrcount = 0, keycount = 0, i = 0;
	isc_uint32_t listcount = 0, l = 0, j;
	isc_uint32_t stackcount = 0, pushed = 0;
481
	isc_result_t result;
482 483 484
	const cfg_listelt_t *element;
	const cfg_obj_t *addrlist;
	const cfg_obj_t *portobj;
485 486 487 488
	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
489
	struct { const char *name; } *lists = NULL;
490
	struct {
491
		const cfg_listelt_t *element;
492 493
		in_port_t port;
	} *stack = NULL;
494

495 496 497
	REQUIRE(addrsp != NULL && *addrsp == NULL);
	REQUIRE(keysp != NULL && *keysp == NULL);
	REQUIRE(countp != NULL);
498

499
 newlist:
500 501 502 503 504 505 506
	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);
507 508
			result = ISC_R_RANGE;
			goto cleanup;
509 510 511 512 513
		}
		port = (in_port_t) val;
	} else {
		result = ns_config_getport(config, &port);
		if (result != ISC_R_SUCCESS)
514
			goto cleanup;
515 516 517 518
	}

	result = ISC_R_NOMEMORY;

519 520 521
	element = cfg_list_first(addrlist);
 resume:
	for ( ;
522
	     element != NULL;
523
	     element = cfg_list_next(element))
524
	{
525 526
		const cfg_obj_t *addr;
		const cfg_obj_t *key;
527
		const char *keystr;
528 529
		isc_buffer_t b;

530 531
		addr = cfg_tuple_get(cfg_listelt_value(element),
				     "masterselement");
532 533
		key = cfg_tuple_get(cfg_listelt_value(element), "key");

534
		if (!cfg_obj_issockaddr(addr)) {
535
			const char *listname = cfg_obj_asstring(addr);
536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557
			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
558
				if (strcasecmp(lists[j].name, listname) == 0)
559 560 561 562 563 564
					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
565
				    "masters \"%s\" not found", listname);
566 567 568 569 570 571

				result = tresult;
				goto cleanup;
			}
			if (tresult != ISC_R_SUCCESS)
				goto cleanup;
Mark Andrews's avatar
Mark Andrews committed
572
			lists[l++].name = listname;
573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623
			/* 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) {
624 625
				memcpy(new, keys, oldsize);
				isc_mem_put(mctx, keys, oldsize);
626 627 628 629 630
			}
			keys = new;
			keycount = newlen;
		}

631 632 633 634
		addrs[i] = *cfg_obj_assockaddr(addr);
		if (isc_sockaddr_getport(&addrs[i]) == 0)
			isc_sockaddr_setport(&addrs[i], port);
		keys[i] = NULL;
635 636
		if (!cfg_obj_isstring(key)) {
			i++;
637
			continue;
638
		}
639 640 641 642
		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
643

644 645 646 647 648
		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,
649
					   dns_rootname, 0, NULL);
650 651 652 653 654 655
		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;
656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676
		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;
677
		isc_mem_put(mctx, addrs, oldsize);
678 679 680 681 682 683 684 685 686 687 688 689
		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;
690
		isc_mem_put(mctx, keys, oldsize);
691 692
		keys = new;
		keycount = i;
693
	}
694 695 696 697 698

	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
699

700
	INSIST(keycount == addrcount);
701 702 703

	*addrsp = addrs;
	*keysp = keys;
704
	*countp = addrcount;
705 706 707 708 709

	return (ISC_R_SUCCESS);

 cleanup:
	if (addrs != NULL)
710
		isc_mem_put(mctx, addrs, addrcount * sizeof(isc_sockaddr_t));
711
	if (keys != NULL) {
712
		for (j = 0; j <= i; j++) {
713 714 715 716 717 718
			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));
		}
719
		isc_mem_put(mctx, keys, keycount * sizeof(dns_name_t *));
720
	}
721 722 723 724
	if (lists != NULL)
		isc_mem_put(mctx, lists, listcount * sizeof(*lists));
	if (stack != NULL)
		isc_mem_put(mctx, stack, stackcount * sizeof(*stack));
725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750
	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
751 752 753 754
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;
755 756 757
	isc_result_t result;
	int i;

758
	(void)cfg_map_get(config, "options", &options);
759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775
	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
776

777 778 779 780
struct keyalgorithms {
	const char *str;
	enum { hmacnone, hmacmd5, hmacsha1, hmacsha224,
	       hmacsha256, hmacsha384, hmacsha512 } hmac;
781
	unsigned int type;
782 783
	isc_uint16_t size;
} algorithms[] = {
784 785 786 787 788 789 790 791 792
	{ "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 }
793 794
};

Brian Wellington's avatar
Brian Wellington committed
795
isc_result_t
796 797
ns_config_getkeyalgorithm(const char *str, dns_name_t **name,
			  isc_uint16_t *digestbits)
798 799 800 801 802 803 804
{
	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
805
{
806 807 808 809 810 811 812 813 814 815 816
	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
817
	}
818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842
	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);
		}
	}
843 844
	if (typep != NULL)
		*typep = algorithms[i].type;
845 846 847
	if (digestbits != NULL)
		*digestbits = bits;
	return (ISC_R_SUCCESS);
Brian Wellington's avatar
Brian Wellington committed
848
}