config.c 25.1 KB
Newer Older
1
/*
Mark Andrews's avatar
Mark Andrews committed
2
 * Copyright (C) 2004-2013  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
 */

Automatic Updater's avatar
Automatic Updater committed
18
/* $Id: config.c,v 1.123 2012/01/06 23:46:41 tbox 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
	listen-on {any;};\n\
74
	listen-on-v6 {any;};\n\
75
	match-mapped-addresses no;\n\
76
	max-rsa-exponent-size 0; /* no limit */\n\
77 78
	memstatistics-file \"named.memstats\";\n\
	multiple-cnames no;\n\
79
#	named-xfer <obsolete>;\n\
80
#	pid-file \"" NS_LOCALSTATEDIR "/run/named/named.pid\"; /* or /lwresd.pid */\n\
81
	bindkeys-file \"" NS_SYSCONFDIR "/bind.keys\";\n\
82
	port 53;\n\
83
	recursing-file \"named.recursing\";\n\
84
	secroots-file \"named.secroots\";\n\
85 86
"
#ifdef PATH_RANDOMDEV
87 88
"\
	random-device \"" PATH_RANDOMDEV "\";\n\
89 90
"
#endif
91 92
"\
	recursive-clients 1000;\n\
93
	resolver-query-timeout 10;\n\
94
	rrset-order { order random; };\n\
95
	serial-queries 20;\n\
96
	serial-query-rate 20;\n\
97
	server-id none;\n\
98
	statistics-file \"named.stats\";\n\
99
	statistics-interval 60;\n\
100
	tcp-clients 100;\n\
Michael Graff's avatar
Michael Graff committed
101
	tcp-listen-queue 3;\n\
102 103 104 105 106 107 108 109 110
#	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\
111
	edns-udp-size 4096;\n\
112
	max-udp-size 4096;\n\
113
	request-nsid false;\n\
114
	reserved-sockets 512;\n\
115 116 117
\n\
	/* DLV */\n\
	dnssec-lookaside . trust-anchor dlv.isc.org;\n\
118 119 120 121
\n\
	/* view */\n\
	allow-notify {none;};\n\
	allow-update-forwarding {none;};\n\
122
	allow-query-cache { localnets; localhost; };\n\
123
	allow-query-cache-on { any; };\n\
124
	allow-recursion { localnets; localhost; };\n\
125
	allow-recursion-on { any; };\n\
126
#	allow-v6-synthesis <obsolete>;\n\
127 128 129
#	sortlist <none>\n\
#	topology <none>\n\
	auth-nxdomain false;\n\
Bob Halley's avatar
Bob Halley committed
130
	minimal-responses false;\n\
131 132 133 134 135 136 137 138 139 140 141
	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\
142
	cleaning-interval 0;  /* now meaningless */\n\
143 144 145 146 147
	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\
148
	max-cache-size 0;\n\
149 150
	check-names master fail;\n\
	check-names slave warn;\n\
151
	check-names response ignore;\n\
152
	check-dup-records warn;\n\
153
	check-mx warn;\n\
154
	acache-enable no;\n\
155
	acache-cleaning-interval 60;\n\
156
	max-acache-size 16M;\n\
157
	dnssec-enable yes;\n\
158
	dnssec-validation yes; \n\
159
	dnssec-accept-expired no;\n\
160 161
	clients-per-query 10;\n\
	max-clients-per-query 100;\n\
162
	zero-no-soa-ttl-cache no;\n\
163
	nsec3-test-zone no;\n\
164
	allow-new-zones no;\n\
Mark Andrews's avatar
Mark Andrews committed
165
"
Evan Hunt's avatar
Evan Hunt committed
166
#ifdef ALLOW_FILTER_AAAA
167
"	filter-aaaa-on-v4 no;\n\
Evan Hunt's avatar
Evan Hunt committed
168
	filter-aaaa-on-v6 no;\n\
Automatic Updater's avatar
Automatic Updater committed
169
	filter-aaaa { any; };\n\
170 171
"
#endif
Mark Andrews's avatar
Mark Andrews committed
172 173

"	/* zone */\n\
174
	allow-query {any;};\n\
175
	allow-query-on {any;};\n\
176 177 178
	allow-transfer {any;};\n\
	notify yes;\n\
#	also-notify <none>\n\
179
	notify-delay 5;\n\
180
	notify-to-soa no;\n\
181 182 183 184 185 186 187
	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\
188
	alt-transfer-source *;\n\
189
	alt-transfer-source-v6 *;\n\
190 191 192 193
	max-transfer-time-in 120;\n\
	max-transfer-time-out 120;\n\
	max-transfer-idle-in 60;\n\
	max-transfer-idle-out 60;\n\
194 195 196 197
	max-retry-time 1209600; /* 2 weeks */\n\
	min-retry-time 500;\n\
	max-refresh-time 2419200; /* 4 weeks */\n\
	min-refresh-time 300;\n\
198
	multi-master no;\n\
199
	dnssec-secure-to-insecure no;\n\
200
	sig-validity-interval 30; /* days */\n\
201 202
	sig-signing-nodes 100;\n\
	sig-signing-signatures 10;\n\
203
	sig-signing-type 65534;\n\
204
	inline-signing no;\n\
205
	zone-statistics terse;\n\
206
	max-journal-size unlimited;\n\
207
	ixfr-from-differences false;\n\
208
	check-wildcard yes;\n\
209 210
	check-sibling yes;\n\
	check-integrity yes;\n\
211 212
	check-mx-cname warn;\n\
	check-srv-cname warn;\n\
213
	zero-no-soa-ttl yes;\n\
214
	update-check-ksk yes;\n\
215
	serial-update-method increment;\n\
216
	dnssec-update-mode maintain;\n\
217
	dnssec-dnskey-kskonly no;\n\
218
	dnssec-loadkeys-interval 60;\n\
219
	try-tcp-refresh yes; /* BIND 8 compat */\n\
220
};\n\
Mark Andrews's avatar
Mark Andrews committed
221 222 223
"

"#\n\
Mark Andrews's avatar
Mark Andrews committed
224
#  Zones in the \"_bind\" view are NOT counted in the count of zones.\n\
225
#\n\
226 227
view \"_bind\" chaos {\n\
	recursion no;\n\
228
	notify no;\n\
229
	allow-new-zones no;\n\
Evan Hunt's avatar
Evan Hunt committed
230 231 232 233 234 235 236
\n\
	# Prevent use of this zone in DNS amplified reflection DoS attacks\n\
	rate-limit {\n\
		responses-per-second 3;\n\
		slip 0;\n\
		min-table-size 10;\n\
	};\n\
237 238 239 240 241 242 243 244 245 246 247 248 249 250 251
\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\
252
\n\
253 254 255 256
	zone \"id.server\" chaos {\n\
		type master;\n\
		database \"_builtin id\";\n\
	};\n\
257
};\n\
258 259 260 261 262 263
"
"#\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\
264
# BEGIN MANAGED KEYS\n"
265 266

/* Imported from bind.keys.h: */
267
MANAGED_KEYS
268

269
"# END MANAGED KEYS\n\
270
";
271 272 273 274 275 276 277 278 279 280 281

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
Evan Hunt's avatar
Evan Hunt committed
282 283 284
ns_config_get(cfg_obj_t const * const *maps, const char *name,
	      const cfg_obj_t **obj)
{
285 286
	int i;

287
	for (i = 0;; i++) {
288 289 290 291 292 293 294
		if (maps[i] == NULL)
			return (ISC_R_NOTFOUND);
		if (cfg_map_get(maps[i], name, obj) == ISC_R_SUCCESS)
			return (ISC_R_SUCCESS);
	}
}

295
isc_result_t
296 297 298 299 300 301 302
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;
303 304 305 306 307 308
	int i;

	for (i = 0;; i++) {
		if (maps[i] == NULL)
			return (ISC_R_NOTFOUND);
		checknames = NULL;
309
		if (cfg_map_get(maps[i], "check-names",
Automatic Updater's avatar
Automatic Updater committed
310
				&checknames) == ISC_R_SUCCESS) {
311 312 313 314 315 316 317 318 319 320 321 322
			/*
			 * 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");
323 324
				if (strcasecmp(cfg_obj_asstring(type),
					       which) == 0) {
325 326 327 328 329 330 331 332 333
					*obj = cfg_tuple_get(value, "mode");
					return (ISC_R_SUCCESS);
				}
			}

		}
	}
}

334
int
335 336
ns_config_listcount(const cfg_obj_t *list) {
	const cfg_listelt_t *e;
337 338 339 340 341 342 343 344 345
	int i = 0;

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

	return (i);
}

isc_result_t
346
ns_config_getclass(const cfg_obj_t *classobj, dns_rdataclass_t defclass,
347
		   dns_rdataclass_t *classp) {
348
	isc_textregion_t r;
349
	isc_result_t result;
350 351

	if (!cfg_obj_isstring(classobj)) {
352
		*classp = defclass;
353 354
		return (ISC_R_SUCCESS);
	}
355 356
	DE_CONST(cfg_obj_asstring(classobj), r.base);
	r.length = strlen(r.base);
357 358 359
	result = dns_rdataclass_fromtext(classp, &r);
	if (result != ISC_R_SUCCESS)
		cfg_obj_log(classobj, ns_g_lctx, ISC_LOG_ERROR,
360
			    "unknown class '%s'", r.base);
361
	return (result);
362 363
}

364
isc_result_t
365
ns_config_gettype(const cfg_obj_t *typeobj, dns_rdatatype_t deftype,
366 367 368 369 370 371 372 373
		   dns_rdatatype_t *typep) {
	isc_textregion_t r;
	isc_result_t result;

	if (!cfg_obj_isstring(typeobj)) {
		*typep = deftype;
		return (ISC_R_SUCCESS);
	}
374 375
	DE_CONST(cfg_obj_asstring(typeobj), r.base);
	r.length = strlen(r.base);
376 377 378
	result = dns_rdatatype_fromtext(typep, &r);
	if (result != ISC_R_SUCCESS)
		cfg_obj_log(typeobj, ns_g_lctx, ISC_LOG_ERROR,
379
			    "unknown type '%s'", r.base);
380 381 382
	return (result);
}

383
dns_zonetype_t
384
ns_config_getzonetype(const cfg_obj_t *zonetypeobj) {
385
	dns_zonetype_t ztype = dns_zone_none;
386
	const char *str;
387 388

	str = cfg_obj_asstring(zonetypeobj);
389
	if (strcasecmp(str, "master") == 0)
390
		ztype = dns_zone_master;
391
	else if (strcasecmp(str, "slave") == 0)
392
		ztype = dns_zone_slave;
393
	else if (strcasecmp(str, "stub") == 0)
394
		ztype = dns_zone_stub;
395 396
	else if (strcasecmp(str, "static-stub") == 0)
		ztype = dns_zone_staticstub;
397 398
	else if (strcasecmp(str, "redirect") == 0)
		ztype = dns_zone_redirect;
399 400 401 402 403 404
	else
		INSIST(0);
	return (ztype);
}

isc_result_t
405
ns_config_getiplist(const cfg_obj_t *config, const cfg_obj_t *list,
406
		    in_port_t defport, isc_mem_t *mctx,
Evan Hunt's avatar
Evan Hunt committed
407 408
		    isc_sockaddr_t **addrsp, isc_dscp_t **dscpsp,
		    isc_uint32_t *countp)
409 410
{
	int count, i = 0;
411
	const cfg_obj_t *addrlist;
Evan Hunt's avatar
Evan Hunt committed
412
	const cfg_obj_t *portobj, *dscpobj;
413
	const cfg_listelt_t *element;
414 415
	isc_sockaddr_t *addrs;
	in_port_t port;
Mark Andrews's avatar
Mark Andrews committed
416
	isc_dscp_t dscp = -1, *dscps = NULL;
417 418 419
	isc_result_t result;

	INSIST(addrsp != NULL && *addrsp == NULL);
Evan Hunt's avatar
Evan Hunt committed
420
	INSIST(dscpsp == NULL || *dscpsp == NULL);
421
	INSIST(countp != NULL);
422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442

	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);
	}

Evan Hunt's avatar
Evan Hunt committed
443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459
	if (dscpsp != NULL) {
		dscps = isc_mem_get(mctx, count * sizeof(isc_dscp_t));
		if (dscps == NULL)
			return (ISC_R_NOMEMORY);

		dscpobj = cfg_tuple_get(list, "dscp");
		if (dscpobj != NULL && cfg_obj_isuint32(dscpobj)) {
			if (cfg_obj_asuint32(dscpobj) > 63) {
				cfg_obj_log(dscpobj, ns_g_lctx, ISC_LOG_ERROR,
					    "dscp value '%u' is out of range",
					    cfg_obj_asuint32(dscpobj));
				return (ISC_R_RANGE);
			}
			dscp = (isc_dscp_t)cfg_obj_asuint32(dscpobj);
		}
	}

460 461 462 463 464 465 466 467
	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++)
	{
Evan Hunt's avatar
Evan Hunt committed
468
		const cfg_obj_t *addr;
469
		INSIST(i < count);
Evan Hunt's avatar
Evan Hunt committed
470 471 472 473 474 475 476 477 478
		addr = cfg_listelt_value(element);
		addrs[i] = *cfg_obj_assockaddr(addr);
		if (dscpsp != NULL) {
			isc_dscp_t innerdscp;
			innerdscp = cfg_obj_getdscp(addr);
			if (innerdscp == -1)
				innerdscp = dscp;
			dscps[i] = innerdscp;
		}
479 480 481 482 483 484 485 486
		if (isc_sockaddr_getport(&addrs[i]) == 0)
			isc_sockaddr_setport(&addrs[i], port);
	}
	INSIST(i == count);

	*addrsp = addrs;
	*countp = count;

Evan Hunt's avatar
Evan Hunt committed
487 488 489
	if (dscpsp != NULL)
		*dscpsp = dscps;

490 491 492 493 494
	return (ISC_R_SUCCESS);
}

void
ns_config_putiplist(isc_mem_t *mctx, isc_sockaddr_t **addrsp,
Evan Hunt's avatar
Evan Hunt committed
495
		    isc_dscp_t **dscpsp, isc_uint32_t count)
496 497
{
	INSIST(addrsp != NULL && *addrsp != NULL);
Evan Hunt's avatar
Evan Hunt committed
498
	INSIST(dscpsp == NULL || *dscpsp != NULL);
499 500 501

	isc_mem_put(mctx, *addrsp, count * sizeof(isc_sockaddr_t));
	*addrsp = NULL;
Evan Hunt's avatar
Evan Hunt committed
502 503 504 505 506

	if (dscpsp != NULL) {
		isc_mem_put(mctx, *dscpsp, count * sizeof(isc_dscp_t));
		*dscpsp = NULL;
	}
507 508
}

509
static isc_result_t
510
get_masters_def(const cfg_obj_t *cctx, const char *name,
Automatic Updater's avatar
Automatic Updater committed
511
		const cfg_obj_t **ret)
512
{
513
	isc_result_t result;
514 515
	const cfg_obj_t *masters = NULL;
	const cfg_listelt_t *elt;
516 517 518 519 520 521 522

	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)) {
523
		const cfg_obj_t *list;
524 525 526 527 528 529 530 531 532 533 534 535 536
		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);
}

537
isc_result_t
538 539
ns_config_getipandkeylist(const cfg_obj_t *config, const cfg_obj_t *list,
			  isc_mem_t *mctx, isc_sockaddr_t **addrsp,
Evan Hunt's avatar
Evan Hunt committed
540 541
			  isc_dscp_t **dscpsp, dns_name_t ***keysp,
			  isc_uint32_t *countp)
542
{
Evan Hunt's avatar
Evan Hunt committed
543
	isc_uint32_t addrcount = 0, dscpcount = 0, keycount = 0, i = 0;
544 545
	isc_uint32_t listcount = 0, l = 0, j;
	isc_uint32_t stackcount = 0, pushed = 0;
546
	isc_result_t result;
547 548 549
	const cfg_listelt_t *element;
	const cfg_obj_t *addrlist;
	const cfg_obj_t *portobj;
Evan Hunt's avatar
Evan Hunt committed
550
	const cfg_obj_t *dscpobj;
551
	in_port_t port;
Evan Hunt's avatar
Evan Hunt committed
552
	isc_dscp_t dscp;
553 554
	dns_fixedname_t fname;
	isc_sockaddr_t *addrs = NULL;
Evan Hunt's avatar
Evan Hunt committed
555
	isc_dscp_t *dscps = NULL;
556
	dns_name_t **keys = NULL;
Mark Andrews's avatar
Mark Andrews committed
557
	struct { const char *name; } *lists = NULL;
558
	struct {
559
		const cfg_listelt_t *element;
560
		in_port_t port;
Evan Hunt's avatar
Evan Hunt committed
561
		isc_dscp_t dscp;
562
	} *stack = NULL;
563

564
	REQUIRE(addrsp != NULL && *addrsp == NULL);
Evan Hunt's avatar
Evan Hunt committed
565
	REQUIRE(dscpsp != NULL && *dscpsp == NULL);
566 567
	REQUIRE(keysp != NULL && *keysp == NULL);
	REQUIRE(countp != NULL);
568

569
 newlist:
570 571
	addrlist = cfg_tuple_get(list, "addresses");
	portobj = cfg_tuple_get(list, "port");
Evan Hunt's avatar
Evan Hunt committed
572 573
	dscpobj = cfg_tuple_get(list, "dscp");

574 575 576 577 578
	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);
579 580
			result = ISC_R_RANGE;
			goto cleanup;
581 582 583 584 585
		}
		port = (in_port_t) val;
	} else {
		result = ns_config_getport(config, &port);
		if (result != ISC_R_SUCCESS)
586
			goto cleanup;
587 588
	}

Evan Hunt's avatar
Evan Hunt committed
589 590 591 592 593 594 595 596 597 598 599 600 601 602
	if (dscpobj != NULL && cfg_obj_isuint32(dscpobj)) {
		if (cfg_obj_asuint32(dscpobj) > 63) {
			cfg_obj_log(dscpobj, ns_g_lctx, ISC_LOG_ERROR,
				    "dscp value '%u' is out of range",
				    cfg_obj_asuint32(dscpobj));
			return (ISC_R_RANGE);
		}
		dscp = (isc_dscp_t)cfg_obj_asuint32(dscpobj);
	} else {
		result = ns_config_getdscp(config, &dscp);
		if (result != ISC_R_SUCCESS)
			goto cleanup;
	}

603 604
	result = ISC_R_NOMEMORY;

605 606 607
	element = cfg_list_first(addrlist);
 resume:
	for ( ;
608
	     element != NULL;
609
	     element = cfg_list_next(element))
610
	{
611 612
		const cfg_obj_t *addr;
		const cfg_obj_t *key;
613
		const char *keystr;
614 615
		isc_buffer_t b;

616 617
		addr = cfg_tuple_get(cfg_listelt_value(element),
				     "masterselement");
618 619
		key = cfg_tuple_get(cfg_listelt_value(element), "key");

620
		if (!cfg_obj_issockaddr(addr)) {
621
			const char *listname = cfg_obj_asstring(addr);
622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643
			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
644
				if (strcasecmp(lists[j].name, listname) == 0)
645 646 647 648 649 650
					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
651
				    "masters \"%s\" not found", listname);
652 653 654 655 656 657

				result = tresult;
				goto cleanup;
			}
			if (tresult != ISC_R_SUCCESS)
				goto cleanup;
Mark Andrews's avatar
Mark Andrews committed
658
			lists[l++].name = listname;
659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682
			/* 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;
Evan Hunt's avatar
Evan Hunt committed
683
			stack[pushed].dscp = dscp;
684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704
			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;

Evan Hunt's avatar
Evan Hunt committed
705 706 707 708 709 710 711 712 713 714 715 716
			newsize = newlen * sizeof(isc_dscp_t);
			oldsize = dscpcount * sizeof(isc_dscp_t);
			new = isc_mem_get(mctx, newsize);
			if (new == NULL)
				goto cleanup;
			if (dscpcount != 0) {
				memcpy(new, dscps, oldsize);
				isc_mem_put(mctx, dscps, oldsize);
			}
			dscps = new;
			dscpcount = newlen;

717 718 719 720 721 722
			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) {
723 724
				memcpy(new, keys, oldsize);
				isc_mem_put(mctx, keys, oldsize);
725 726 727 728 729
			}
			keys = new;
			keycount = newlen;
		}

730 731 732
		addrs[i] = *cfg_obj_assockaddr(addr);
		if (isc_sockaddr_getport(&addrs[i]) == 0)
			isc_sockaddr_setport(&addrs[i], port);
Evan Hunt's avatar
Evan Hunt committed
733 734 735
		dscps[i] = cfg_obj_getdscp(addr);
		if (dscps[i] == -1)
			dscps[i] = dscp;
736
		keys[i] = NULL;
737 738
		i++;	/* Increment here so that cleanup on error works. */
		if (!cfg_obj_isstring(key))
739
			continue;
740 741
		keys[i - 1] = isc_mem_get(mctx, sizeof(dns_name_t));
		if (keys[i - 1] == NULL)
742
			goto cleanup;
743
		dns_name_init(keys[i - 1], NULL);
Automatic Updater's avatar
Automatic Updater committed
744

745
		keystr = cfg_obj_asstring(key);
746
		isc_buffer_constinit(&b, keystr, strlen(keystr));
747 748 749
		isc_buffer_add(&b, strlen(keystr));
		dns_fixedname_init(&fname);
		result = dns_name_fromtext(dns_fixedname_name(&fname), &b,
750
					   dns_rootname, 0, NULL);
751 752 753
		if (result != ISC_R_SUCCESS)
			goto cleanup;
		result = dns_name_dup(dns_fixedname_name(&fname), mctx,
754
				      keys[i - 1]);
755 756
		if (result != ISC_R_SUCCESS)
			goto cleanup;
757 758 759 760 761
	}
	if (pushed != 0) {
		pushed--;
		element = stack[pushed].element;
		port = stack[pushed].port;
Evan Hunt's avatar
Evan Hunt committed
762
		dscp = stack[pushed].dscp;
763 764 765 766 767 768 769 770 771 772 773 774 775 776 777
		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;
778
		isc_mem_put(mctx, addrs, oldsize);
779 780 781
		addrs = new;
		addrcount = i;

Evan Hunt's avatar
Evan Hunt committed
782 783 784 785 786 787 788 789 790 791 792 793 794
		newsize = i * sizeof(isc_dscp_t);
		oldsize = dscpcount * sizeof(isc_dscp_t);
		if (i != 0) {
			new = isc_mem_get(mctx, newsize);
			if (new == NULL)
				goto cleanup;
			memcpy(new, dscps, newsize);
		} else
			new = NULL;
		isc_mem_put(mctx, dscps, oldsize);
		dscps = new;
		dscpcount = i;

795 796 797 798 799 800 801 802 803
		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;
804
		isc_mem_put(mctx, keys, oldsize);
805 806
		keys = new;
		keycount = i;
807
	}
808 809 810 811 812

	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
813

814
	INSIST(keycount == addrcount);
815 816

	*addrsp = addrs;
Evan Hunt's avatar
Evan Hunt committed
817
	*dscpsp = dscps;
818
	*keysp = keys;
819
	*countp = addrcount;
820 821 822 823 824

	return (ISC_R_SUCCESS);

 cleanup:
	if (addrs != NULL)
825
		isc_mem_put(mctx, addrs, addrcount * sizeof(isc_sockaddr_t));
Evan Hunt's avatar
Evan Hunt committed
826 827
	if (dscps != NULL)
		isc_mem_put(mctx, dscps, dscpcount * sizeof(isc_dscp_t));
828
	if (keys != NULL) {
829
		for (j = 0; j < i; j++) {
830 831 832 833 834 835
			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));
		}
836
		isc_mem_put(mctx, keys, keycount * sizeof(dns_name_t *));
837
	}
838 839 840 841
	if (lists != NULL)
		isc_mem_put(mctx, lists, listcount * sizeof(*lists));
	if (stack != NULL)
		isc_mem_put(mctx, stack, stackcount * sizeof(*stack));
842 843 844 845 846
	return (result);
}

void
ns_config_putipandkeylist(isc_mem_t *mctx, isc_sockaddr_t **addrsp,
Evan Hunt's avatar
Evan Hunt committed
847 848
			  isc_dscp_t **dscpsp, dns_name_t ***keysp,
			  isc_uint32_t count)
849 850
{
	unsigned int i;
Evan Hunt's avatar
Evan Hunt committed
851
	dns_name_t **keys;
852

Evan Hunt's avatar
Evan Hunt committed
853 854 855 856 857
	REQUIRE(addrsp != NULL && *addrsp != NULL);
	REQUIRE(dscpsp == NULL || *dscpsp != NULL);
	REQUIRE(keysp != NULL && *keysp != NULL);

	keys = *keysp;
858 859

	isc_mem_put(mctx, *addrsp, count * sizeof(isc_sockaddr_t));
Evan Hunt's avatar
Evan Hunt committed
860 861
	if (dscpsp != NULL)
		isc_mem_put(mctx, *dscpsp, count * sizeof(isc_dscp_t));
862 863 864 865 866 867 868 869 870
	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;
Evan Hunt's avatar
Evan Hunt committed
871 872
	if (dscpsp != NULL)
		*dscpsp = NULL;
873 874 875 876
	*keysp = NULL;
}

isc_result_t
877 878 879 880
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;
881 882 883
	isc_result_t result;
	int i;

884
	(void)cfg_map_get(config, "options", &options);
885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901
	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
902

Evan Hunt's avatar
Evan Hunt committed
903 904 905 906 907 908 909
isc_result_t
ns_config_getdscp(const cfg_obj_t *config, isc_dscp_t *dscpp) {
	const cfg_obj_t *options = NULL;
	const cfg_obj_t *dscpobj = NULL;
	isc_result_t result;

	(void)cfg_map_get(config, "options", &options);
910 911
	if (options == NULL)
		return (ISC_R_SUCCESS);
Evan Hunt's avatar
Evan Hunt committed
912

913
	result = cfg_map_get(options, "dscp", &dscpobj);
Mark Andrews's avatar
Mark Andrews committed
914
	if (result != ISC_R_SUCCESS || dscpobj == NULL) {
Evan Hunt's avatar
Evan Hunt committed
915 916 917 918 919 920 921 922 923 924 925 926 927
		*dscpp = -1;
		return (ISC_R_SUCCESS);
	}
	if (cfg_obj_asuint32(dscpobj) >= 64) {
		cfg_obj_log(dscpobj, ns_g_lctx, ISC_LOG_ERROR,
			    "dscp '%u' out of range",
			    cfg_obj_asuint32(dscpobj));
		return (ISC_R_RANGE);
	}
	*dscpp = (isc_dscp_t)cfg_obj_asuint32(dscpobj);
	return (ISC_R_SUCCESS);
}

928 929 930 931
struct keyalgorithms {
	const char *str;
	enum { hmacnone, hmacmd5, hmacsha1, hmacsha224,
	       hmacsha256, hmacsha384, hmacsha512 } hmac;
932
	unsigned int type;
933 934
	isc_uint16_t size;
} algorithms[] = {
935 936 937 938 939 940 941 942 943
	{ "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 }
944 945
};

Brian Wellington's avatar
Brian Wellington committed
946
isc_result_t
947 948
ns_config_getkeyalgorithm(const char *str, dns_name_t **name,
			  isc_uint16_t *digestbits)
949 950 951 952 953 954 955
{
	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
956
{
957 958 959 960 961 962 963 964 965 966 967
	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
968
	}
969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993
	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);
		}
	}
994 995
	if (typep != NULL)
		*typep = algorithms[i].type;
996 997 998
	if (digestbits != NULL)
		*digestbits = bits;
	return (ISC_R_SUCCESS);
Brian Wellington's avatar
Brian Wellington committed
999
}