config.c 19.9 KB
Newer Older
1
/*
Automatic Updater's avatar
Automatic Updater committed
2
 * Copyright (C) 2004-2008  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 1.90 2008/09/04 05:56:42 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 45 46 47
#include <dns/zone.h>

#include <named/config.h>
#include <named/globals.h>

48
/*% default configuration */
49 50
static char defaultconf[] = "\
options {\n\
51 52 53
#	blackhole {none;};\n"
#ifndef WIN32
"	coresize default;\n\
54
	datasize default;\n\
55
	files unlimited;\n\
56 57 58
	stacksize default;\n"
#endif
"	deallocate-on-exit true;\n\
59 60 61 62
#	directory <none>\n\
	dump-file \"named_dump.db\";\n\
	fake-iquery no;\n\
	has-old-clients false;\n\
63
	heartbeat-interval 60;\n\
64
	host-statistics no;\n\
65
	interface-interval 60;\n\
66 67
	listen-on {any;};\n\
	listen-on-v6 {none;};\n\
68
	match-mapped-addresses no;\n\
69 70
	memstatistics-file \"named.memstats\";\n\
	multiple-cnames no;\n\
71
#	named-xfer <obsolete>;\n\
72 73
#	pid-file \"" NS_LOCALSTATEDIR "/named.pid\"; /* or /lwresd.pid */\n\
	port 53;\n\
74
	recursing-file \"named.recursing\";\n\
75 76
"
#ifdef PATH_RANDOMDEV
77 78
"\
	random-device \"" PATH_RANDOMDEV "\";\n\
79 80
"
#endif
81 82
"\
	recursive-clients 1000;\n\
83
	rrset-order {type NS order random; order cyclic; };\n\
84
	serial-queries 20;\n\
85
	serial-query-rate 20;\n\
86
	server-id none;\n\
87
	statistics-file \"named.stats\";\n\
88
	statistics-interval 60;\n\
89
	tcp-clients 100;\n\
Michael Graff's avatar
Michael Graff committed
90
	tcp-listen-queue 3;\n\
91 92 93 94 95 96 97 98 99
#	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\
100
	edns-udp-size 4096;\n\
101
	max-udp-size 4096;\n\
102
	request-nsid false;\n\
103
	reserved-sockets 512;\n\
104 105 106 107
\n\
	/* view */\n\
	allow-notify {none;};\n\
	allow-update-forwarding {none;};\n\
108
	allow-query-cache { localnets; localhost; };\n\
109
	allow-query-cache-on { any; };\n\
110
	allow-recursion { localnets; localhost; };\n\
111
	allow-recursion-on { any; };\n\
112
#	allow-v6-synthesis <obsolete>;\n\
113 114 115
#	sortlist <none>\n\
#	topology <none>\n\
	auth-nxdomain false;\n\
Bob Halley's avatar
Bob Halley committed
116
	minimal-responses false;\n\
117 118 119 120 121 122 123 124 125 126 127
	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\
128
	cleaning-interval 0;  /* now meaningless */\n\
129 130 131 132 133
	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\
134
#	max-cache-size default; /* set default in server.c */\n\
135 136
	check-names master fail;\n\
	check-names slave warn;\n\
137
	check-names response ignore;\n\
138
	check-mx warn;\n\
139
	acache-enable no;\n\
140
	acache-cleaning-interval 60;\n\
141
	max-acache-size 16M;\n\
142
	dnssec-enable yes;\n\
143
	dnssec-validation yes; \n\
144
	dnssec-accept-expired no;\n\
145 146
	clients-per-query 10;\n\
	max-clients-per-query 100;\n\
147
	zero-no-soa-ttl-cache no;\n\
Mark Andrews's avatar
Mark Andrews committed
148 149 150
"

"	/* zone */\n\
151
	allow-query {any;};\n\
152
	allow-query-on {any;};\n\
153 154 155
	allow-transfer {any;};\n\
	notify yes;\n\
#	also-notify <none>\n\
156
	notify-delay 5;\n\
157
	notify-to-soa no;\n\
158 159 160 161 162 163 164
	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\
165
	alt-transfer-source *;\n\
166
	alt-transfer-source-v6 *;\n\
167 168 169 170
	max-transfer-time-in 120;\n\
	max-transfer-time-out 120;\n\
	max-transfer-idle-in 60;\n\
	max-transfer-idle-out 60;\n\
171 172 173 174
	max-retry-time 1209600; /* 2 weeks */\n\
	min-retry-time 500;\n\
	max-refresh-time 2419200; /* 4 weeks */\n\
	min-refresh-time 300;\n\
175
	multi-master no;\n\
176
	sig-validity-interval 30; /* days */\n\
177 178 179
	sig-signing-nodes 100;\n\
	sig-signing-signatures 10;\n\
	sig-signing-type 65535;\n\
180
	zone-statistics false;\n\
181
	max-journal-size unlimited;\n\
182
	ixfr-from-differences false;\n\
183
	check-wildcard yes;\n\
184 185
	check-sibling yes;\n\
	check-integrity yes;\n\
186 187
	check-mx-cname warn;\n\
	check-srv-cname warn;\n\
188
	zero-no-soa-ttl yes;\n\
189
	update-check-ksk yes;\n\
190
	try-tcp-refresh yes; /* BIND 8 compat */\n\
191
};\n\
Mark Andrews's avatar
Mark Andrews committed
192 193 194
"

"#\n\
Mark Andrews's avatar
Mark Andrews committed
195
#  Zones in the \"_bind\" view are NOT counted in the count of zones.\n\
196
#\n\
197 198
view \"_bind\" chaos {\n\
	recursion no;\n\
199
	notify no;\n\
200 201 202 203 204 205 206 207 208 209 210 211 212 213 214
\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\
215 216 217 218
	zone \"id.server\" chaos {\n\
		type master;\n\
		database \"_builtin id\";\n\
	};\n\
219
};\n\
220
";
221 222 223 224 225 226 227 228 229 230 231

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
232
ns_config_get(const cfg_obj_t **maps, const char *name, const cfg_obj_t **obj) {
233 234
	int i;

235
	for (i = 0;; i++) {
236 237 238 239 240 241 242
		if (maps[i] == NULL)
			return (ISC_R_NOTFOUND);
		if (cfg_map_get(maps[i], name, obj) == ISC_R_SUCCESS)
			return (ISC_R_SUCCESS);
	}
}

243
isc_result_t
244 245 246 247 248 249 250
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;
251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279
	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);
				}
			}

		}
	}
}

280
int
281 282
ns_config_listcount(const cfg_obj_t *list) {
	const cfg_listelt_t *e;
283 284 285 286 287 288 289 290 291
	int i = 0;

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

	return (i);
}

isc_result_t
292
ns_config_getclass(const cfg_obj_t *classobj, dns_rdataclass_t defclass,
293
		   dns_rdataclass_t *classp) {
294
	isc_textregion_t r;
295
	isc_result_t result;
296 297

	if (!cfg_obj_isstring(classobj)) {
298
		*classp = defclass;
299 300
		return (ISC_R_SUCCESS);
	}
301 302
	DE_CONST(cfg_obj_asstring(classobj), r.base);
	r.length = strlen(r.base);
303 304 305
	result = dns_rdataclass_fromtext(classp, &r);
	if (result != ISC_R_SUCCESS)
		cfg_obj_log(classobj, ns_g_lctx, ISC_LOG_ERROR,
306
			    "unknown class '%s'", r.base);
307
	return (result);
308 309
}

310
isc_result_t
311
ns_config_gettype(const cfg_obj_t *typeobj, dns_rdatatype_t deftype,
312 313 314 315 316 317 318 319
		   dns_rdatatype_t *typep) {
	isc_textregion_t r;
	isc_result_t result;

	if (!cfg_obj_isstring(typeobj)) {
		*typep = deftype;
		return (ISC_R_SUCCESS);
	}
320 321
	DE_CONST(cfg_obj_asstring(typeobj), r.base);
	r.length = strlen(r.base);
322 323 324
	result = dns_rdatatype_fromtext(typep, &r);
	if (result != ISC_R_SUCCESS)
		cfg_obj_log(typeobj, ns_g_lctx, ISC_LOG_ERROR,
325
			    "unknown type '%s'", r.base);
326 327 328
	return (result);
}

329
dns_zonetype_t
330
ns_config_getzonetype(const cfg_obj_t *zonetypeobj) {
331
	dns_zonetype_t ztype = dns_zone_none;
332
	const char *str;
333 334

	str = cfg_obj_asstring(zonetypeobj);
335
	if (strcasecmp(str, "master") == 0)
336
		ztype = dns_zone_master;
337
	else if (strcasecmp(str, "slave") == 0)
338
		ztype = dns_zone_slave;
339
	else if (strcasecmp(str, "stub") == 0)
340 341 342 343 344 345 346
		ztype = dns_zone_stub;
	else
		INSIST(0);
	return (ztype);
}

isc_result_t
347
ns_config_getiplist(const cfg_obj_t *config, const cfg_obj_t *list,
348 349 350 351
		    in_port_t defport, isc_mem_t *mctx,
		    isc_sockaddr_t **addrsp, isc_uint32_t *countp)
{
	int count, i = 0;
352 353 354
	const cfg_obj_t *addrlist;
	const cfg_obj_t *portobj;
	const cfg_listelt_t *element;
355 356 357 358 359
	isc_sockaddr_t *addrs;
	in_port_t port;
	isc_result_t result;

	INSIST(addrsp != NULL && *addrsp == NULL);
360
	INSIST(countp != NULL);
361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412

	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;
}

413
static isc_result_t
414
get_masters_def(const cfg_obj_t *cctx, const char *name,
Automatic Updater's avatar
Automatic Updater committed
415
		const cfg_obj_t **ret)
416
{
417
	isc_result_t result;
418 419
	const cfg_obj_t *masters = NULL;
	const cfg_listelt_t *elt;
420 421 422 423 424 425 426

	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)) {
427
		const cfg_obj_t *list;
428 429 430 431 432 433 434 435 436 437 438 439 440
		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);
}

441
isc_result_t
442 443 444
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)
445
{
446 447 448
	isc_uint32_t addrcount = 0, keycount = 0, i = 0;
	isc_uint32_t listcount = 0, l = 0, j;
	isc_uint32_t stackcount = 0, pushed = 0;
449
	isc_result_t result;
450 451 452
	const cfg_listelt_t *element;
	const cfg_obj_t *addrlist;
	const cfg_obj_t *portobj;
453 454 455 456
	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
457
	struct { const char *name; } *lists = NULL;
458
	struct {
459
		const cfg_listelt_t *element;
460 461
		in_port_t port;
	} *stack = NULL;
462

463 464 465
	REQUIRE(addrsp != NULL && *addrsp == NULL);
	REQUIRE(keysp != NULL && *keysp == NULL);
	REQUIRE(countp != NULL);
466

467
 newlist:
468 469 470 471 472 473 474
	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);
475 476
			result = ISC_R_RANGE;
			goto cleanup;
477 478 479 480 481
		}
		port = (in_port_t) val;
	} else {
		result = ns_config_getport(config, &port);
		if (result != ISC_R_SUCCESS)
482
			goto cleanup;
483 484 485 486
	}

	result = ISC_R_NOMEMORY;

487 488 489
	element = cfg_list_first(addrlist);
 resume:
	for ( ;
490
	     element != NULL;
491
	     element = cfg_list_next(element))
492
	{
493 494
		const cfg_obj_t *addr;
		const cfg_obj_t *key;
495
		const char *keystr;
496 497
		isc_buffer_t b;

498 499
		addr = cfg_tuple_get(cfg_listelt_value(element),
				     "masterselement");
500 501
		key = cfg_tuple_get(cfg_listelt_value(element), "key");

502
		if (!cfg_obj_issockaddr(addr)) {
503
			const char *listname = cfg_obj_asstring(addr);
504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525
			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
526
				if (strcasecmp(lists[j].name, listname) == 0)
527 528 529 530 531 532
					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
533
				    "masters \"%s\" not found", listname);
534 535 536 537 538 539

				result = tresult;
				goto cleanup;
			}
			if (tresult != ISC_R_SUCCESS)
				goto cleanup;
Mark Andrews's avatar
Mark Andrews committed
540
			lists[l++].name = listname;
541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591
			/* 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) {
592 593
				memcpy(new, keys, oldsize);
				isc_mem_put(mctx, keys, oldsize);
594 595 596 597 598
			}
			keys = new;
			keycount = newlen;
		}

599 600 601 602
		addrs[i] = *cfg_obj_assockaddr(addr);
		if (isc_sockaddr_getport(&addrs[i]) == 0)
			isc_sockaddr_setport(&addrs[i], port);
		keys[i] = NULL;
603 604
		if (!cfg_obj_isstring(key)) {
			i++;
605
			continue;
606
		}
607 608 609 610
		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
611

612 613 614 615 616 617 618 619 620 621 622 623
		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,
					   dns_rootname, ISC_FALSE, NULL);
		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;
624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644
		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;
645
		isc_mem_put(mctx, addrs, oldsize);
646 647 648 649 650 651 652 653 654 655 656 657
		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;
658
		isc_mem_put(mctx, keys, oldsize);
659 660
		keys = new;
		keycount = i;
661
	}
662 663 664 665 666

	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
667

668
	INSIST(keycount == addrcount);
669 670 671

	*addrsp = addrs;
	*keysp = keys;
672
	*countp = addrcount;
673 674 675 676 677

	return (ISC_R_SUCCESS);

 cleanup:
	if (addrs != NULL)
678
		isc_mem_put(mctx, addrs, addrcount * sizeof(isc_sockaddr_t));
679
	if (keys != NULL) {
680
		for (j = 0; j <= i; j++) {
681 682 683 684 685 686
			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));
		}
687
		isc_mem_put(mctx, keys, keycount * sizeof(dns_name_t *));
688
	}
689 690 691 692
	if (lists != NULL)
		isc_mem_put(mctx, lists, listcount * sizeof(*lists));
	if (stack != NULL)
		isc_mem_put(mctx, stack, stackcount * sizeof(*stack));
693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718
	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
719 720 721 722
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;
723 724 725
	isc_result_t result;
	int i;

726
	(void)cfg_map_get(config, "options", &options);
727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743
	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
744

745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761
struct keyalgorithms {
	const char *str;
	enum { hmacnone, hmacmd5, hmacsha1, hmacsha224,
	       hmacsha256, hmacsha384, hmacsha512 } hmac;
	isc_uint16_t size;
} algorithms[] = {
	{ "hmac-md5", hmacmd5, 128 },
	{ "hmac-md5.sig-alg.reg.int", hmacmd5, 0 },
	{ "hmac-md5.sig-alg.reg.int.", hmacmd5, 0 },
	{ "hmac-sha1", hmacsha1, 160 },
	{ "hmac-sha224", hmacsha224, 224 },
	{ "hmac-sha256", hmacsha256, 256 },
	{ "hmac-sha384", hmacsha384, 384 },
	{ "hmac-sha512", hmacsha512, 512 },
	{  NULL, hmacnone, 0 }
};

Brian Wellington's avatar
Brian Wellington committed
762
isc_result_t
763 764
ns_config_getkeyalgorithm(const char *str, dns_name_t **name,
			  isc_uint16_t *digestbits)
Brian Wellington's avatar
Brian Wellington committed
765
{
766 767 768 769 770 771 772 773 774 775 776
	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
777
	}
778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805
	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);
		}
	}
	if (digestbits != NULL)
		*digestbits = bits;
	return (ISC_R_SUCCESS);
Brian Wellington's avatar
Brian Wellington committed
806
}