config.c 24.8 KB
Newer Older
1
/*
2
 * Copyright (C) 2001-2016  Internet Systems Consortium, Inc. ("ISC")
3
 *
4 5 6
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
7 8
 */

9
/*! \file */
Brian Wellington's avatar
Brian Wellington committed
10 11

#include <config.h>
12 13 14 15 16 17

#include <stdlib.h>

#include <isc/buffer.h>
#include <isc/log.h>
#include <isc/mem.h>
18
#include <isc/parseint.h>
19 20 21
#include <isc/region.h>
#include <isc/result.h>
#include <isc/sockaddr.h>
Evan Hunt's avatar
Evan Hunt committed
22
#include <isc/string.h>
23 24
#include <isc/util.h>

25
#include <isccfg/namedconf.h>
26 27 28 29

#include <dns/fixedname.h>
#include <dns/name.h>
#include <dns/rdataclass.h>
30
#include <dns/rdatatype.h>
Brian Wellington's avatar
Brian Wellington committed
31
#include <dns/tsig.h>
32 33
#include <dns/zone.h>

34 35
#include <dst/dst.h>

36 37 38
#include <named/config.h>
#include <named/globals.h>

Evan Hunt's avatar
Evan Hunt committed
39
#include <bind.keys.h>
40

41
/*% default configuration */
42 43
static char defaultconf[] = "\
options {\n\
44
	automatic-interface-scan yes;\n\
Evan Hunt's avatar
Evan Hunt committed
45
	bindkeys-file \"" NS_SYSCONFDIR "/bind.keys\";\n\
46
#	blackhole {none;};\n"
47 48 49 50 51
#if defined(HAVE_OPENSSL_AES) || defined(HAVE_OPENSSL_EVP_AES)
"	cookie-algorithm aes;\n"
#else
"	cookie-algorithm sha256;\n"
#endif
52 53
#ifndef WIN32
"	coresize default;\n\
54
	datasize default;\n\
55
	files unlimited;\n\
56 57
	stacksize default;\n"
#endif
58 59 60
"#	session-keyfile \"" NS_LOCALSTATEDIR "/run/named/session.key\";\n\
	session-keyname local-ddns;\n\
	session-keyalg hmac-sha256;\n\
61
#	deallocate-on-exit <obsolete>;\n\
62 63
#	directory <none>\n\
	dump-file \"named_dump.db\";\n\
64 65
#	fake-iquery <obsolete>;\n\
#	has-old-clients <obsolete>;\n\
66
	heartbeat-interval 60;\n\
67
#	host-statistics <obsolete>;\n\
68
	interface-interval 60;\n\
69
#	keep-response-order {none;};\n\
70
	listen-on {any;};\n\
71
	listen-on-v6 {any;};\n\
72
	match-mapped-addresses no;\n\
73
	max-rsa-exponent-size 0; /* no limit */\n\
74
	memstatistics-file \"named.memstats\";\n\
75
#	multiple-cnames <obsolete>;\n\
76
#	named-xfer <obsolete>;\n\
Evan Hunt's avatar
Evan Hunt committed
77 78
	nta-lifetime 3600;\n\
	nta-recheck 300;\n\
79
	notify-rate 20;\n\
80
#	pid-file \"" NS_LOCALSTATEDIR "/run/named/named.pid\"; /* or /lwresd.pid */\n\
81
#	lock-file \"" NS_LOCALSTATEDIR "/run/named/named.lock\";\n\
82
	port 53;\n\
83
	prefetch 2 9;\n\
84
	recursing-file \"named.recursing\";\n\
85
	secroots-file \"named.secroots\";\n\
86 87
"
#ifdef PATH_RANDOMDEV
88 89
"\
	random-device \"" PATH_RANDOMDEV "\";\n\
90 91
"
#endif
92 93
"\
	recursive-clients 1000;\n\
94
	resolver-query-timeout 10;\n\
95
	rrset-order { order random; };\n\
96
#	serial-queries <obsolete>;\n\
97
	serial-query-rate 20;\n\
98
	server-id none;\n\
99
	startup-notify-rate 20;\n\
100
	statistics-file \"named.stats\";\n\
101
#	statistics-interval <obsolete>;\n\
102
	tcp-clients 150;\n\
103
	tcp-listen-queue 10;\n\
104 105 106
#	tkey-dhkey <none>\n\
#	tkey-gssapi-credential <none>\n\
#	tkey-domain <none>\n\
107
	transfer-message-size 20480;\n\
108 109 110
	transfers-per-ns 2;\n\
	transfers-in 10;\n\
	transfers-out 10;\n\
111
#	treat-cr-as-space <obsolete>;\n\
112
	trust-anchor-telemetry yes;\n\
113
#	use-id-pool <obsolete>;\n\
114
#	use-ixfr <obsolete>;\n\
115
	edns-udp-size 4096;\n\
116
	max-udp-size 4096;\n\
117 118
	nocookie-udp-size 4096;\n\
	send-cookie true;\n\
119
	request-nsid false;\n\
120
	reserved-sockets 512;\n\
121 122 123
\n\
	/* DLV */\n\
	dnssec-lookaside . trust-anchor dlv.isc.org;\n\
124 125 126 127
\n\
	/* view */\n\
	allow-notify {none;};\n\
	allow-update-forwarding {none;};\n\
128
	allow-query-cache { localnets; localhost; };\n\
129
	allow-query-cache-on { any; };\n\
130
	allow-recursion { localnets; localhost; };\n\
131
	allow-recursion-on { any; };\n\
132
#	allow-v6-synthesis <obsolete>;\n\
133 134 135
#	sortlist <none>\n\
#	topology <none>\n\
	auth-nxdomain false;\n\
Evan Hunt's avatar
Evan Hunt committed
136
	minimal-any false;\n\
Bob Halley's avatar
Bob Halley committed
137
	minimal-responses false;\n\
138 139 140
	recursion true;\n\
	provide-ixfr true;\n\
	request-ixfr true;\n\
141
	request-expire true;\n\
142 143
#	fetch-glue <obsolete>;\n\
#	rfc2308-type1 <obsolete>;\n\
144 145 146 147 148 149
	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\
150
	cleaning-interval 0;  /* now meaningless */\n\
151
#	min-roots <obsolete>;\n\
152
	lame-ttl 600;\n\
153
	servfail-ttl 1;\n\
154 155 156
	max-ncache-ttl 10800; /* 3 hours */\n\
	max-cache-ttl 604800; /* 1 week */\n\
	transfer-format many-answers;\n\
157
	max-cache-size 90%;\n\
158 159
	check-names master fail;\n\
	check-names slave warn;\n\
160
	check-names response ignore;\n\
161
	check-dup-records warn;\n\
162
	check-mx warn;\n\
163
	check-spf warn;\n\
164
	acache-enable no;\n\
165
	acache-cleaning-interval 60;\n\
166
	max-acache-size 16M;\n\
167
	dnssec-enable yes;\n\
168
	dnssec-validation yes; \n\
169
	dnssec-accept-expired no;\n\
Evan Hunt's avatar
Evan Hunt committed
170 171
	fetches-per-zone 0;\n\
	fetch-quota-params 100 0.1 0.3 0.7;\n\
172 173
	clients-per-query 10;\n\
	max-clients-per-query 100;\n\
174
	max-recursion-depth 7;\n\
175
	max-recursion-queries 75;\n\
176
	zero-no-soa-ttl-cache no;\n\
177
	nsec3-test-zone no;\n\
178
	allow-new-zones no;\n\
Evan Hunt's avatar
Evan Hunt committed
179
	fetches-per-server 0;\n\
180
	require-server-cookie no;\n\
181
	v6-bias 50;\n\
182
	message-compression yes;\n\
Mark Andrews's avatar
Mark Andrews committed
183
"
Evan Hunt's avatar
Evan Hunt committed
184 185 186 187 188
#ifdef HAVE_DNSTAP
"\
	dnstap-identity hostname;\n\
"
#endif
Evan Hunt's avatar
Evan Hunt committed
189 190 191 192 193
#ifdef HAVE_GEOIP
"\
	geoip-use-ecs yes;\n\
"
#endif
Evan Hunt's avatar
Evan Hunt committed
194
#ifdef ALLOW_FILTER_AAAA
195
"	filter-aaaa-on-v4 no;\n\
Evan Hunt's avatar
Evan Hunt committed
196
	filter-aaaa-on-v6 no;\n\
Automatic Updater's avatar
Automatic Updater committed
197
	filter-aaaa { any; };\n\
198 199
"
#endif
Mark Andrews's avatar
Mark Andrews committed
200 201

"	/* zone */\n\
202
	allow-query {any;};\n\
203
	allow-query-on {any;};\n\
204 205 206
	allow-transfer {any;};\n\
	notify yes;\n\
#	also-notify <none>\n\
207
	notify-delay 5;\n\
208
	notify-to-soa no;\n\
209 210 211
	dialup no;\n\
#	forward <none>\n\
#	forwarders <none>\n\
212
#	maintain-ixfr-base <obsolete>;\n\
213 214 215
#	max-ixfr-log-size <obsolete>\n\
	transfer-source *;\n\
	transfer-source-v6 *;\n\
216
	alt-transfer-source *;\n\
217
	alt-transfer-source-v6 *;\n\
218 219 220 221
	max-transfer-time-in 120;\n\
	max-transfer-time-out 120;\n\
	max-transfer-idle-in 60;\n\
	max-transfer-idle-out 60;\n\
222 223 224 225
	max-retry-time 1209600; /* 2 weeks */\n\
	min-retry-time 500;\n\
	max-refresh-time 2419200; /* 4 weeks */\n\
	min-refresh-time 300;\n\
226
	multi-master no;\n\
227
	dnssec-secure-to-insecure no;\n\
228
	sig-validity-interval 30; /* days */\n\
229 230
	sig-signing-nodes 100;\n\
	sig-signing-signatures 10;\n\
231
	sig-signing-type 65534;\n\
232
	inline-signing no;\n\
233
	zone-statistics terse;\n\
234
	max-journal-size unlimited;\n\
235
	ixfr-from-differences false;\n\
236
	check-wildcard yes;\n\
237 238
	check-sibling yes;\n\
	check-integrity yes;\n\
239 240
	check-mx-cname warn;\n\
	check-srv-cname warn;\n\
241
	zero-no-soa-ttl yes;\n\
242
	update-check-ksk yes;\n\
243
	serial-update-method increment;\n\
244
	dnssec-update-mode maintain;\n\
245
	dnssec-dnskey-kskonly no;\n\
246
	dnssec-loadkeys-interval 60;\n\
247
	try-tcp-refresh yes; /* BIND 8 compat */\n\
248
};\n\
Mark Andrews's avatar
Mark Andrews committed
249 250 251
"

"#\n\
Mark Andrews's avatar
Mark Andrews committed
252
#  Zones in the \"_bind\" view are NOT counted in the count of zones.\n\
253
#\n\
254 255
view \"_bind\" chaos {\n\
	recursion no;\n\
256
	notify no;\n\
257
	allow-new-zones no;\n\
Evan Hunt's avatar
Evan Hunt committed
258 259 260 261 262 263 264
\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\
265 266 267 268 269 270 271 272 273 274 275 276 277 278 279
\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\
280
\n\
281 282 283 284
	zone \"id.server\" chaos {\n\
		type master;\n\
		database \"_builtin id\";\n\
	};\n\
285
};\n\
286 287 288 289 290 291
"
"#\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\
292
# BEGIN MANAGED KEYS\n"
293 294

/* Imported from bind.keys.h: */
295
MANAGED_KEYS
296

297
"# END MANAGED KEYS\n\
298
";
299 300 301 302 303 304 305

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);
306 307
	return (cfg_parse_buffer2(parser, &b, __FILE__,
				  &cfg_type_namedconf, conf));
308 309 310
}

isc_result_t
Evan Hunt's avatar
Evan Hunt committed
311 312 313
ns_config_get(cfg_obj_t const * const *maps, const char *name,
	      const cfg_obj_t **obj)
{
314 315
	int i;

316
	for (i = 0;; i++) {
317 318 319 320 321 322 323
		if (maps[i] == NULL)
			return (ISC_R_NOTFOUND);
		if (cfg_map_get(maps[i], name, obj) == ISC_R_SUCCESS)
			return (ISC_R_SUCCESS);
	}
}

324
isc_result_t
325 326 327 328 329 330 331
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;
332 333 334 335 336 337
	int i;

	for (i = 0;; i++) {
		if (maps[i] == NULL)
			return (ISC_R_NOTFOUND);
		checknames = NULL;
338
		if (cfg_map_get(maps[i], "check-names",
Automatic Updater's avatar
Automatic Updater committed
339
				&checknames) == ISC_R_SUCCESS) {
340 341 342 343 344 345 346 347 348 349 350 351
			/*
			 * 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");
352 353
				if (strcasecmp(cfg_obj_asstring(type),
					       which) == 0) {
354 355 356 357 358 359 360 361 362
					*obj = cfg_tuple_get(value, "mode");
					return (ISC_R_SUCCESS);
				}
			}

		}
	}
}

363
int
364 365
ns_config_listcount(const cfg_obj_t *list) {
	const cfg_listelt_t *e;
366 367 368 369 370 371 372 373 374
	int i = 0;

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

	return (i);
}

isc_result_t
375
ns_config_getclass(const cfg_obj_t *classobj, dns_rdataclass_t defclass,
376
		   dns_rdataclass_t *classp) {
377
	isc_textregion_t r;
378
	isc_result_t result;
379 380

	if (!cfg_obj_isstring(classobj)) {
381
		*classp = defclass;
382 383
		return (ISC_R_SUCCESS);
	}
384 385
	DE_CONST(cfg_obj_asstring(classobj), r.base);
	r.length = strlen(r.base);
386 387 388
	result = dns_rdataclass_fromtext(classp, &r);
	if (result != ISC_R_SUCCESS)
		cfg_obj_log(classobj, ns_g_lctx, ISC_LOG_ERROR,
389
			    "unknown class '%s'", r.base);
390
	return (result);
391 392
}

393
isc_result_t
394
ns_config_gettype(const cfg_obj_t *typeobj, dns_rdatatype_t deftype,
395 396 397 398 399 400 401 402
		   dns_rdatatype_t *typep) {
	isc_textregion_t r;
	isc_result_t result;

	if (!cfg_obj_isstring(typeobj)) {
		*typep = deftype;
		return (ISC_R_SUCCESS);
	}
403 404
	DE_CONST(cfg_obj_asstring(typeobj), r.base);
	r.length = strlen(r.base);
405 406 407
	result = dns_rdatatype_fromtext(typep, &r);
	if (result != ISC_R_SUCCESS)
		cfg_obj_log(typeobj, ns_g_lctx, ISC_LOG_ERROR,
408
			    "unknown type '%s'", r.base);
409 410 411
	return (result);
}

412
dns_zonetype_t
413
ns_config_getzonetype(const cfg_obj_t *zonetypeobj) {
414
	dns_zonetype_t ztype = dns_zone_none;
415
	const char *str;
416 417

	str = cfg_obj_asstring(zonetypeobj);
418
	if (strcasecmp(str, "master") == 0)
419
		ztype = dns_zone_master;
420
	else if (strcasecmp(str, "slave") == 0)
421
		ztype = dns_zone_slave;
422
	else if (strcasecmp(str, "stub") == 0)
423
		ztype = dns_zone_stub;
424 425
	else if (strcasecmp(str, "static-stub") == 0)
		ztype = dns_zone_staticstub;
426 427
	else if (strcasecmp(str, "redirect") == 0)
		ztype = dns_zone_redirect;
428 429 430 431 432 433
	else
		INSIST(0);
	return (ztype);
}

isc_result_t
434
ns_config_getiplist(const cfg_obj_t *config, const cfg_obj_t *list,
435
		    in_port_t defport, isc_mem_t *mctx,
Evan Hunt's avatar
Evan Hunt committed
436 437
		    isc_sockaddr_t **addrsp, isc_dscp_t **dscpsp,
		    isc_uint32_t *countp)
438 439
{
	int count, i = 0;
440
	const cfg_obj_t *addrlist;
Evan Hunt's avatar
Evan Hunt committed
441
	const cfg_obj_t *portobj, *dscpobj;
442
	const cfg_listelt_t *element;
443 444
	isc_sockaddr_t *addrs;
	in_port_t port;
Mark Andrews's avatar
Mark Andrews committed
445
	isc_dscp_t dscp = -1, *dscps = NULL;
446 447 448
	isc_result_t result;

	INSIST(addrsp != NULL && *addrsp == NULL);
Evan Hunt's avatar
Evan Hunt committed
449
	INSIST(dscpsp == NULL || *dscpsp == NULL);
450
	INSIST(countp != NULL);
451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471

	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
472 473 474 475 476 477 478 479 480 481 482
	if (dscpsp != NULL) {
		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);
		}
483 484 485 486

		dscps = isc_mem_get(mctx, count * sizeof(isc_dscp_t));
		if (dscps == NULL)
			return (ISC_R_NOMEMORY);
Evan Hunt's avatar
Evan Hunt committed
487 488
	}

489
	addrs = isc_mem_get(mctx, count * sizeof(isc_sockaddr_t));
490 491 492
	if (addrs == NULL) {
		if (dscps != NULL)
			isc_mem_put(mctx, dscps, count * sizeof(isc_dscp_t));
493
		return (ISC_R_NOMEMORY);
494
	}
495 496 497 498 499

	for (element = cfg_list_first(addrlist);
	     element != NULL;
	     element = cfg_list_next(element), i++)
	{
Evan Hunt's avatar
Evan Hunt committed
500
		const cfg_obj_t *addr;
501
		INSIST(i < count);
Evan Hunt's avatar
Evan Hunt committed
502 503 504 505 506 507 508 509 510
		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;
		}
511 512 513 514 515 516 517 518
		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
519 520 521
	if (dscpsp != NULL)
		*dscpsp = dscps;

522 523 524 525 526
	return (ISC_R_SUCCESS);
}

void
ns_config_putiplist(isc_mem_t *mctx, isc_sockaddr_t **addrsp,
Evan Hunt's avatar
Evan Hunt committed
527
		    isc_dscp_t **dscpsp, isc_uint32_t count)
528 529
{
	INSIST(addrsp != NULL && *addrsp != NULL);
Evan Hunt's avatar
Evan Hunt committed
530
	INSIST(dscpsp == NULL || *dscpsp != NULL);
531 532 533

	isc_mem_put(mctx, *addrsp, count * sizeof(isc_sockaddr_t));
	*addrsp = NULL;
Evan Hunt's avatar
Evan Hunt committed
534 535 536 537 538

	if (dscpsp != NULL) {
		isc_mem_put(mctx, *dscpsp, count * sizeof(isc_dscp_t));
		*dscpsp = NULL;
	}
539 540
}

541
static isc_result_t
542
get_masters_def(const cfg_obj_t *cctx, const char *name,
Automatic Updater's avatar
Automatic Updater committed
543
		const cfg_obj_t **ret)
544
{
545
	isc_result_t result;
546 547
	const cfg_obj_t *masters = NULL;
	const cfg_listelt_t *elt;
548 549 550 551 552 553 554

	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)) {
555
		const cfg_obj_t *list;
556 557 558 559 560 561 562 563 564 565 566 567 568
		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);
}

569
isc_result_t
570
ns_config_getipandkeylist(const cfg_obj_t *config, const cfg_obj_t *list,
571
			  isc_mem_t *mctx, dns_ipkeylist_t *ipkl)
572
{
Evan Hunt's avatar
Evan Hunt committed
573
	isc_uint32_t addrcount = 0, dscpcount = 0, keycount = 0, i = 0;
574 575
	isc_uint32_t listcount = 0, l = 0, j;
	isc_uint32_t stackcount = 0, pushed = 0;
576
	isc_result_t result;
577 578 579
	const cfg_listelt_t *element;
	const cfg_obj_t *addrlist;
	const cfg_obj_t *portobj;
Evan Hunt's avatar
Evan Hunt committed
580
	const cfg_obj_t *dscpobj;
581
	in_port_t port;
582
	isc_dscp_t dscp = -1;
583 584
	dns_fixedname_t fname;
	isc_sockaddr_t *addrs = NULL;
Evan Hunt's avatar
Evan Hunt committed
585
	isc_dscp_t *dscps = NULL;
586
	dns_name_t **keys = NULL;
Mark Andrews's avatar
Mark Andrews committed
587
	struct { const char *name; } *lists = NULL;
588
	struct {
589
		const cfg_listelt_t *element;
590
		in_port_t port;
Evan Hunt's avatar
Evan Hunt committed
591
		isc_dscp_t dscp;
592
	} *stack = NULL;
593

594
	REQUIRE(ipkl != NULL);
595
	REQUIRE(ipkl->count == 0);
596 597 598
	REQUIRE(ipkl->addrs == NULL);
	REQUIRE(ipkl->keys == NULL);
	REQUIRE(ipkl->dscps == NULL);
599 600
	REQUIRE(ipkl->labels == NULL);
	REQUIRE(ipkl->allocated == 0);
601

602 603 604 605 606 607 608 609 610 611 612
	/*
	 * Get system defaults.
	 */
	result = ns_config_getport(config, &port);
	if (result != ISC_R_SUCCESS)
		goto cleanup;

	result = ns_config_getdscp(config, &dscp);
	if (result != ISC_R_SUCCESS)
		goto cleanup;

613
 newlist:
614 615
	addrlist = cfg_tuple_get(list, "addresses");
	portobj = cfg_tuple_get(list, "port");
Evan Hunt's avatar
Evan Hunt committed
616 617
	dscpobj = cfg_tuple_get(list, "dscp");

618 619 620 621 622
	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);
623 624
			result = ISC_R_RANGE;
			goto cleanup;
625 626 627 628
		}
		port = (in_port_t) val;
	}

Evan Hunt's avatar
Evan Hunt committed
629 630 631 632 633
	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));
634 635
			result = ISC_R_RANGE;
			goto cleanup;
Evan Hunt's avatar
Evan Hunt committed
636 637 638 639
		}
		dscp = (isc_dscp_t)cfg_obj_asuint32(dscpobj);
	}

640 641
	result = ISC_R_NOMEMORY;

642 643 644
	element = cfg_list_first(addrlist);
 resume:
	for ( ;
645
	     element != NULL;
646
	     element = cfg_list_next(element))
647
	{
648 649
		const cfg_obj_t *addr;
		const cfg_obj_t *key;
650
		const char *keystr;
651 652
		isc_buffer_t b;

653 654
		addr = cfg_tuple_get(cfg_listelt_value(element),
				     "masterselement");
655 656
		key = cfg_tuple_get(cfg_listelt_value(element), "key");

657
		if (!cfg_obj_issockaddr(addr)) {
658
			const char *listname = cfg_obj_asstring(addr);
659 660 661 662 663 664 665 666 667 668 669 670 671 672
			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) {
673
					memmove(new, lists, oldsize);
674 675 676 677 678 679 680
					isc_mem_put(mctx, lists, oldsize);
				}
				lists = new;
				listcount = newlen;
			}
			/* Seen? */
			for (j = 0; j < l; j++)
Mark Andrews's avatar
Mark Andrews committed
681
				if (strcasecmp(lists[j].name, listname) == 0)
682 683 684 685 686 687
					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
688
				    "masters \"%s\" not found", listname);
689 690 691 692 693 694

				result = tresult;
				goto cleanup;
			}
			if (tresult != ISC_R_SUCCESS)
				goto cleanup;
Mark Andrews's avatar
Mark Andrews committed
695
			lists[l++].name = listname;
696 697 698 699 700 701 702 703 704 705 706 707
			/* 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) {
708
					memmove(new, stack, oldsize);
709 710 711 712 713 714 715 716 717 718 719
					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
720
			stack[pushed].dscp = dscp;
721 722 723 724 725 726 727 728 729 730 731 732 733 734 735
			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) {
736
				memmove(new, addrs, oldsize);
737 738 739 740 741
				isc_mem_put(mctx, addrs, oldsize);
			}
			addrs = new;
			addrcount = newlen;

Evan Hunt's avatar
Evan Hunt committed
742 743 744 745 746 747
			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) {
748
				memmove(new, dscps, oldsize);
Evan Hunt's avatar
Evan Hunt committed
749 750 751 752 753
				isc_mem_put(mctx, dscps, oldsize);
			}
			dscps = new;
			dscpcount = newlen;

754 755 756 757 758 759
			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) {
760
				memmove(new, keys, oldsize);
761
				isc_mem_put(mctx, keys, oldsize);
762 763 764 765 766
			}
			keys = new;
			keycount = newlen;
		}

767 768 769
		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
770 771 772
		dscps[i] = cfg_obj_getdscp(addr);
		if (dscps[i] == -1)
			dscps[i] = dscp;
773
		keys[i] = NULL;
774 775
		i++;	/* Increment here so that cleanup on error works. */
		if (!cfg_obj_isstring(key))
776
			continue;
777 778
		keys[i - 1] = isc_mem_get(mctx, sizeof(dns_name_t));
		if (keys[i - 1] == NULL)
779
			goto cleanup;
780
		dns_name_init(keys[i - 1], NULL);
Automatic Updater's avatar
Automatic Updater committed
781

782
		keystr = cfg_obj_asstring(key);
783
		isc_buffer_constinit(&b, keystr, strlen(keystr));
784 785 786
		isc_buffer_add(&b, strlen(keystr));
		dns_fixedname_init(&fname);
		result = dns_name_fromtext(dns_fixedname_name(&fname), &b,
787
					   dns_rootname, 0, NULL);
788 789 790
		if (result != ISC_R_SUCCESS)
			goto cleanup;
		result = dns_name_dup(dns_fixedname_name(&fname), mctx,
791
				      keys[i - 1]);
792 793
		if (result != ISC_R_SUCCESS)
			goto cleanup;
794 795 796 797 798
	}
	if (pushed != 0) {
		pushed--;
		element = stack[pushed].element;
		port = stack[pushed].port;
Evan Hunt's avatar
Evan Hunt committed
799
		dscp = stack[pushed].dscp;
800 801 802 803 804 805 806 807 808 809 810 811
		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;
812
			memmove(new, addrs, newsize);
813 814
		} else
			new = NULL;
815
		isc_mem_put(mctx, addrs, oldsize);
816 817 818
		addrs = new;
		addrcount = i;

Evan Hunt's avatar
Evan Hunt committed
819 820 821 822 823 824
		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;
825
			memmove(new, dscps, newsize);
Evan Hunt's avatar
Evan Hunt committed
826 827 828 829 830 831
		} else
			new = NULL;
		isc_mem_put(mctx, dscps, oldsize);
		dscps = new;
		dscpcount = i;

832 833 834 835 836 837
		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;
838
			memmove(new, keys,  newsize);
839 840
		} else
			new = NULL;
841
		isc_mem_put(mctx, keys, oldsize);
842 843
		keys = new;
		keycount = i;
844
	}
845 846 847 848 849

	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
850

851
	INSIST(keycount == addrcount);
852

853 854 855 856
	ipkl->addrs = addrs;
	ipkl->dscps = dscps;
	ipkl->keys = keys;
	ipkl->count = addrcount;
857
	ipkl->allocated = addrcount;
858 859 860 861 862

	return (ISC_R_SUCCESS);

 cleanup:
	if (addrs != NULL)
863
		isc_mem_put(mctx, addrs, addrcount * sizeof(isc_sockaddr_t));
Evan Hunt's avatar
Evan Hunt committed
864 865
	if (dscps != NULL)
		isc_mem_put(mctx, dscps, dscpcount * sizeof(isc_dscp_t));
866
	if (keys != NULL) {
867
		for (j = 0; j < i; j++) {
868 869 870 871 872 873
			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));
		}
874
		isc_mem_put(mctx, keys, keycount * sizeof(dns_name_t *));
875
	}
876 877 878 879
	if (lists != NULL)
		isc_mem_put(mctx, lists, listcount * sizeof(*lists));
	if (stack != NULL)
		isc_mem_put(mctx, stack, stackcount * sizeof(*stack));
880 881 882 883
	return (result);
}

isc_result_t
884 885 886 887
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;
888 889 890
	isc_result_t result;
	int i;

891
	(void)cfg_map_get(config, "options", &options);
892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908
	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
909

Evan Hunt's avatar
Evan Hunt committed
910 911 912 913 914 915 916
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);
917 918
	if (options == NULL)
		return (ISC_R_SUCCESS);
Evan Hunt's avatar
Evan Hunt committed
919

920
	result = cfg_map_get(options, "dscp", &dscpobj);
Mark Andrews's avatar
Mark Andrews committed
921
	if (result != ISC_R_SUCCESS || dscpobj == NULL) {
Evan Hunt's avatar
Evan Hunt committed
922 923 924 925 926 927 928 929 930 931 932 933 934
		*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);
}

935 936 937 938
struct keyalgorithms {
	const char *str;
	enum { hmacnone, hmacmd5, hmacsha1, hmacsha224,
	       hmacsha256, hmacsha384, hmacsha512 } hmac;
939
	unsigned int type;
940 941
	isc_uint16_t size;
} algorithms[] = {
942 943 944 945 946 947 948 949 950
	{ "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 }
951 952
};