check.c 61.7 KB
Newer Older
1
/*
Automatic Updater's avatar
Automatic Updater committed
2
 * Copyright (C) 2004-2007  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: check.c,v 1.87 2008/03/28 03:26:39 marka Exp $ */
19 20

/*! \file */
21 22 23 24 25

#include <config.h>

#include <stdlib.h>

26
#include <isc/buffer.h>
27
#include <isc/log.h>
28
#include <isc/mem.h>
29
#include <isc/netaddr.h>
30
#include <isc/parseint.h>
31
#include <isc/region.h>
32
#include <isc/result.h>
33
#include <isc/sockaddr.h>
Evan Hunt's avatar
Evan Hunt committed
34
#include <isc/string.h>
35
#include <isc/symtab.h>
Brian Wellington's avatar
Brian Wellington committed
36
#include <isc/util.h>
37

38
#include <dns/acl.h>
39
#include <dns/fixedname.h>
Mark Andrews's avatar
Mark Andrews committed
40 41
#include <dns/rdataclass.h>
#include <dns/rdatatype.h>
42
#include <dns/secalg.h>
43

44
#include <isccfg/aclconf.h>
45
#include <isccfg/cfg.h>
46 47

#include <bind9/check.h>
48

49 50 51 52
#ifndef DNS_RDATASET_FIXED
#define DNS_RDATASET_FIXED 1
#endif

53 54 55 56 57 58 59
static void
freekey(char *key, unsigned int type, isc_symvalue_t value, void *userarg) {
	UNUSED(type);
	UNUSED(value);
	isc_mem_free(userarg, key);
}

Mark Andrews's avatar
Mark Andrews committed
60
static isc_result_t
61
check_orderent(const cfg_obj_t *ent, isc_log_t *logctx) {
Mark Andrews's avatar
Mark Andrews committed
62 63 64 65
	isc_result_t result = ISC_R_SUCCESS;
	isc_result_t tresult;
	isc_textregion_t r;
	dns_fixedname_t fixed;
66
	const cfg_obj_t *obj;
Mark Andrews's avatar
Mark Andrews committed
67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127
	dns_rdataclass_t rdclass;
	dns_rdatatype_t rdtype;
	isc_buffer_t b;
	const char *str;

	dns_fixedname_init(&fixed);
	obj = cfg_tuple_get(ent, "class");
	if (cfg_obj_isstring(obj)) {

		DE_CONST(cfg_obj_asstring(obj), r.base);
		r.length = strlen(r.base);
		tresult = dns_rdataclass_fromtext(&rdclass, &r);
		if (tresult != ISC_R_SUCCESS) {
			cfg_obj_log(obj, logctx, ISC_LOG_ERROR,
				    "rrset-order: invalid class '%s'",
				    r.base);
			result = ISC_R_FAILURE;
		}
	}

	obj = cfg_tuple_get(ent, "type");
	if (cfg_obj_isstring(obj)) {

		DE_CONST(cfg_obj_asstring(obj), r.base);
		r.length = strlen(r.base);
		tresult = dns_rdatatype_fromtext(&rdtype, &r);
		if (tresult != ISC_R_SUCCESS) {
			cfg_obj_log(obj, logctx, ISC_LOG_ERROR,
				    "rrset-order: invalid type '%s'",
				    r.base);
			result = ISC_R_FAILURE;
		}
	}

	obj = cfg_tuple_get(ent, "name");
	if (cfg_obj_isstring(obj)) {
		str = cfg_obj_asstring(obj);
		isc_buffer_init(&b, str, strlen(str));
		isc_buffer_add(&b, strlen(str));
		tresult = dns_name_fromtext(dns_fixedname_name(&fixed), &b,
					    dns_rootname, ISC_FALSE, NULL);
		if (tresult != ISC_R_SUCCESS) {
			cfg_obj_log(obj, logctx, ISC_LOG_ERROR,
				    "rrset-order: invalid name '%s'", str);
			result = ISC_R_FAILURE;
		}
	}

	obj = cfg_tuple_get(ent, "order");
	if (!cfg_obj_isstring(obj) ||
	    strcasecmp("order", cfg_obj_asstring(obj)) != 0) {
		cfg_obj_log(ent, logctx, ISC_LOG_ERROR,
			    "rrset-order: keyword 'order' missing");
		result = ISC_R_FAILURE;
	}

	obj = cfg_tuple_get(ent, "ordering");
	if (!cfg_obj_isstring(obj)) {
	    cfg_obj_log(ent, logctx, ISC_LOG_ERROR,
			"rrset-order: missing ordering");
		result = ISC_R_FAILURE;
128 129 130 131 132 133
	} else if (strcasecmp(cfg_obj_asstring(obj), "fixed") == 0) {
#if !DNS_RDATASET_FIXED
		cfg_obj_log(obj, logctx, ISC_LOG_WARNING,
			    "rrset-order: order 'fixed' not fully implemented");
#endif
	} else if (strcasecmp(cfg_obj_asstring(obj), "random") != 0 &&
Mark Andrews's avatar
Mark Andrews committed
134 135 136 137 138 139 140 141 142 143
		   strcasecmp(cfg_obj_asstring(obj), "cyclic") != 0) {
		cfg_obj_log(obj, logctx, ISC_LOG_ERROR,
			    "rrset-order: invalid order '%s'",
			    cfg_obj_asstring(obj));
		result = ISC_R_FAILURE;
	}
	return (result);
}

static isc_result_t
144
check_order(const cfg_obj_t *options, isc_log_t *logctx) {
Mark Andrews's avatar
Mark Andrews committed
145 146
	isc_result_t result = ISC_R_SUCCESS;
	isc_result_t tresult;
147 148
	const cfg_listelt_t *element;
	const cfg_obj_t *obj = NULL;
Mark Andrews's avatar
Mark Andrews committed
149 150 151 152 153 154 155 156 157 158 159 160 161 162 163

	if (cfg_map_get(options, "rrset-order", &obj) != ISC_R_SUCCESS)
		return (result);

	for (element = cfg_list_first(obj);
	     element != NULL;
	     element = cfg_list_next(element))
	{
		tresult = check_orderent(cfg_listelt_value(element), logctx);
		if (tresult != ISC_R_SUCCESS)
			result = tresult;
	}
	return (result);
}

164
static isc_result_t
165 166 167 168 169
check_dual_stack(const cfg_obj_t *options, isc_log_t *logctx) {
	const cfg_listelt_t *element;
	const cfg_obj_t *alternates = NULL;
	const cfg_obj_t *value;
	const cfg_obj_t *obj;
170
	const char *str;
171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223
	dns_fixedname_t fixed;
	dns_name_t *name;
	isc_buffer_t buffer;
	isc_result_t result = ISC_R_SUCCESS;
	isc_result_t tresult;

	(void)cfg_map_get(options, "dual-stack-servers", &alternates);

	if (alternates == NULL)
		return (ISC_R_SUCCESS);

	obj = cfg_tuple_get(alternates, "port");
	if (cfg_obj_isuint32(obj)) {
		isc_uint32_t val = cfg_obj_asuint32(obj);
		if (val > ISC_UINT16_MAX) {
			cfg_obj_log(obj, logctx, ISC_LOG_ERROR,
				    "port '%u' out of range", val);
			result = ISC_R_FAILURE;
		}
	}
	obj = cfg_tuple_get(alternates, "addresses");
	for (element = cfg_list_first(obj);
	     element != NULL;
	     element = cfg_list_next(element)) {
		value = cfg_listelt_value(element);
		if (cfg_obj_issockaddr(value))
			continue;
		obj = cfg_tuple_get(value, "name");
		str = cfg_obj_asstring(obj);
		isc_buffer_init(&buffer, str, strlen(str));
		isc_buffer_add(&buffer, strlen(str));
		dns_fixedname_init(&fixed);
		name = dns_fixedname_name(&fixed);
		tresult = dns_name_fromtext(name, &buffer, dns_rootname,
					   ISC_FALSE, NULL);
		if (tresult != ISC_R_SUCCESS) {
			cfg_obj_log(obj, logctx, ISC_LOG_ERROR,
				    "bad name '%s'", str);
			result = ISC_R_FAILURE;
		}
		obj = cfg_tuple_get(value, "port");
		if (cfg_obj_isuint32(obj)) {
			isc_uint32_t val = cfg_obj_asuint32(obj);
			if (val > ISC_UINT16_MAX) {
				cfg_obj_log(obj, logctx, ISC_LOG_ERROR,
					    "port '%u' out of range", val);
				result = ISC_R_FAILURE;
			}
		}
	}
	return (result);
}

224
static isc_result_t
225 226 227
check_forward(const cfg_obj_t *options,  const cfg_obj_t *global,
	      isc_log_t *logctx)
{
228 229
	const cfg_obj_t *forward = NULL;
	const cfg_obj_t *forwarders = NULL;
230 231 232 233

	(void)cfg_map_get(options, "forward", &forward);
	(void)cfg_map_get(options, "forwarders", &forwarders);

234 235 236 237 238 239 240 241 242
	if (forwarders != NULL && global != NULL) {
		const char *file = cfg_obj_file(global);
		unsigned int line = cfg_obj_line(global);
		cfg_obj_log(forwarders, logctx, ISC_LOG_ERROR,
			    "forwarders declared in root zone and "
			    "in general configuration: %s:%u",
			    file, line);
		return (ISC_R_FAILURE);
	}
243 244 245 246 247 248 249 250
	if (forward != NULL && forwarders == NULL) {
		cfg_obj_log(forward, logctx, ISC_LOG_ERROR,
			    "no matching 'forwarders' statement");
		return (ISC_R_FAILURE);
	}
	return (ISC_R_SUCCESS);
}

251
static isc_result_t
252
disabled_algorithms(const cfg_obj_t *disabled, isc_log_t *logctx) {
253 254
	isc_result_t result = ISC_R_SUCCESS;
	isc_result_t tresult;
255
	const cfg_listelt_t *element;
256 257 258 259
	const char *str;
	isc_buffer_t b;
	dns_fixedname_t fixed;
	dns_name_t *name;
260
	const cfg_obj_t *obj;
261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284

	dns_fixedname_init(&fixed);
	name = dns_fixedname_name(&fixed);
	obj = cfg_tuple_get(disabled, "name");
	str = cfg_obj_asstring(obj);
	isc_buffer_init(&b, str, strlen(str));
	isc_buffer_add(&b, strlen(str));
	tresult = dns_name_fromtext(name, &b, dns_rootname, ISC_FALSE, NULL);
	if (tresult != ISC_R_SUCCESS) {
		cfg_obj_log(obj, logctx, ISC_LOG_ERROR,
			    "bad domain name '%s'", str);
		result = tresult;
	}

	obj = cfg_tuple_get(disabled, "algorithms");

	for (element = cfg_list_first(obj);
	     element != NULL;
	     element = cfg_list_next(element))
	{
		isc_textregion_t r;
		dns_secalg_t alg;
		isc_result_t tresult;

285
		DE_CONST(cfg_obj_asstring(cfg_listelt_value(element)), r.base);
286 287 288 289 290 291 292 293 294
		r.length = strlen(r.base);

		tresult = dns_secalg_fromtext(&alg, &r);
		if (tresult != ISC_R_SUCCESS) {
			isc_uint8_t ui;
			result = isc_parse_uint8(&ui, r.base, 10);
		}
		if (tresult != ISC_R_SUCCESS) {
			cfg_obj_log(cfg_listelt_value(element), logctx,
295 296
				    ISC_LOG_ERROR, "invalid algorithm '%s'",
				    r.base);
297 298 299 300 301 302
			result = tresult;
		}
	}
	return (result);
}

303
static isc_result_t
304 305 306
nameexist(const cfg_obj_t *obj, const char *name, int value,
	  isc_symtab_t *symtab, const char *fmt, isc_log_t *logctx,
	  isc_mem_t *mctx)
307 308 309 310 311 312 313 314 315 316
{
	char *key;
	const char *file;
	unsigned int line;
	isc_result_t result;
	isc_symvalue_t symvalue;

	key = isc_mem_strdup(mctx, name);
	if (key == NULL)
		return (ISC_R_NOMEMORY);
317
	symvalue.as_cpointer = obj;
318 319 320 321 322
	result = isc_symtab_define(symtab, key, value, symvalue,
				   isc_symexists_reject);
	if (result == ISC_R_EXISTS) {
		RUNTIME_CHECK(isc_symtab_lookup(symtab, key, value,
						&symvalue) == ISC_R_SUCCESS);
323 324
		file = cfg_obj_file(symvalue.as_cpointer);
		line = cfg_obj_line(symvalue.as_cpointer);
325 326 327 328 329 330 331 332 333 334 335 336

		if (file == NULL)
			file = "<unknown file>";
		cfg_obj_log(obj, logctx, ISC_LOG_ERROR, fmt, key, file, line);
		isc_mem_free(mctx, key);
		result = ISC_R_EXISTS;
	} else if (result != ISC_R_SUCCESS) {
		isc_mem_free(mctx, key);
	}
	return (result);
}

337
static isc_result_t
338
mustbesecure(const cfg_obj_t *secure, isc_symtab_t *symtab, isc_log_t *logctx,
339 340
	     isc_mem_t *mctx)
{
341
	const cfg_obj_t *obj;
342 343 344 345 346 347 348 349 350 351 352 353 354
	char namebuf[DNS_NAME_FORMATSIZE];
	const char *str;
	dns_fixedname_t fixed;
	dns_name_t *name;
	isc_buffer_t b;
	isc_result_t result = ISC_R_SUCCESS;

	dns_fixedname_init(&fixed);
	name = dns_fixedname_name(&fixed);
	obj = cfg_tuple_get(secure, "name");
	str = cfg_obj_asstring(obj);
	isc_buffer_init(&b, str, strlen(str));
	isc_buffer_add(&b, strlen(str));
355 356
	result = dns_name_fromtext(name, &b, dns_rootname, ISC_FALSE, NULL);
	if (result != ISC_R_SUCCESS) {
357 358 359 360
		cfg_obj_log(obj, logctx, ISC_LOG_ERROR,
			    "bad domain name '%s'", str);
	} else {
		dns_name_format(name, namebuf, sizeof(namebuf));
361 362 363 364
		result = nameexist(secure, namebuf, 1, symtab,
				   "dnssec-must-be-secure '%s': already "
				   "exists previous definition: %s:%u",
				   logctx, mctx);
365 366 367 368
	}
	return (result);
}

369
static isc_result_t
370 371 372
checkacl(const char *aclname, cfg_aclconfctx_t *actx, const cfg_obj_t *zconfig,
	 const cfg_obj_t *voptions, const cfg_obj_t *config,
	 isc_log_t *logctx, isc_mem_t *mctx)
373 374
{
	isc_result_t result;
375 376
	const cfg_obj_t *aclobj = NULL;
	const cfg_obj_t *options;
377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392
	dns_acl_t *acl = NULL;

	if (zconfig != NULL) {
		options = cfg_tuple_get(zconfig, "options");
		cfg_map_get(options, aclname, &aclobj);
	}
	if (voptions != NULL && aclobj == NULL)
		cfg_map_get(voptions, aclname, &aclobj);
	if (config != NULL && aclobj == NULL) {
		options = NULL;
		cfg_map_get(config, "options", &options);
		if (options != NULL)
			cfg_map_get(options, aclname, &aclobj);
	}
	if (aclobj == NULL)
		return (ISC_R_SUCCESS);
393 394
	result = cfg_acl_fromconfig(aclobj, config, logctx,
                                    actx, mctx, 0, &acl);
395 396 397 398 399 400
	if (acl != NULL)
		dns_acl_detach(&acl);
	return (result);
}

static isc_result_t
401 402
check_viewacls(cfg_aclconfctx_t *actx, const cfg_obj_t *voptions,
	       const cfg_obj_t *config, isc_log_t *logctx, isc_mem_t *mctx)
403 404 405 406
{
	isc_result_t result = ISC_R_SUCCESS, tresult;
	int i = 0;
	
407 408 409 410
	static const char *acls[] = { "allow-query", "allow-query-on",
                "allow-query-cache", "allow-query-cache-on",
		"blackhole", "match-clients", "match-destinations",
		"sortlist", NULL };
411 412

	while (acls[i] != NULL) {
413
		tresult = checkacl(acls[i++], actx, NULL, voptions, config,
414 415 416 417 418 419 420
				   logctx, mctx);
		if (tresult != ISC_R_SUCCESS)
			result = tresult;  
	}
	return (result);
}

421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473
/*
 * Check allow-recursion and allow-recursion-on acls, and also log a
 * warning if they're inconsistent with the "recursion" option.
 */
static isc_result_t
check_recursionacls(cfg_aclconfctx_t *actx, const cfg_obj_t *voptions,
		    const char *viewname, const cfg_obj_t *config,
		    isc_log_t *logctx, isc_mem_t *mctx)
{
	const cfg_obj_t *options, *aclobj, *obj = NULL;
	dns_acl_t *acl = NULL;
	isc_result_t result = ISC_R_SUCCESS, tresult;
	isc_boolean_t recursion;
	const char *forview = " for view ";
	int i = 0;

	static const char *acls[] = { "allow-recursion", "allow-recursion-on",
		 		      NULL };
	
	if (voptions != NULL)
		cfg_map_get(voptions, "recursion", &obj);
	if (obj == NULL && config != NULL) {
		options = NULL;
		cfg_map_get(config, "options", &options);
		if (options != NULL)
			cfg_map_get(options, "recursion", &obj);
	}
	if (obj == NULL)
		recursion = ISC_TRUE;
	else
		recursion = cfg_obj_asboolean(obj);

	if (viewname == NULL) {
		viewname = "";
		forview = "";
	}

	for (i = 0; acls[i] != NULL; i++) {
		aclobj = options = NULL;
		acl = NULL;

		if (voptions != NULL)
			cfg_map_get(voptions, acls[i], &aclobj);
		if (config != NULL && aclobj == NULL) {
			options = NULL;
			cfg_map_get(config, "options", &options);
			if (options != NULL)
				cfg_map_get(options, acls[i], &aclobj);
		}
		if (aclobj == NULL) 
			continue;

		tresult = cfg_acl_fromconfig(aclobj, config, logctx,
474
					    actx, mctx, 0, &acl);
475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498

		if (tresult != ISC_R_SUCCESS)
			result = tresult;  

		if (acl == NULL)
			continue;

		if (recursion == ISC_FALSE &&
		    (acl->length != 1 ||
		     acl->elements[0].type != dns_aclelementtype_any ||
		     acl->elements[0].negative != ISC_TRUE)) {
			cfg_obj_log(aclobj, logctx, ISC_LOG_WARNING,
				    "both \"recursion no;\" and "
				    "\"%s\" active%s%s",
				    acls[i], forview, viewname);
		}

		if (acl != NULL)
			dns_acl_detach(&acl);
	}	

	return (result);
}

499 500 501
typedef struct {
	const char *name;
	unsigned int scale;
502
	unsigned int max;
503 504 505
} intervaltable;

static isc_result_t
506
check_options(const cfg_obj_t *options, isc_log_t *logctx, isc_mem_t *mctx) {
507
	isc_result_t result = ISC_R_SUCCESS;
508
	isc_result_t tresult;
509
	unsigned int i;
510 511
	const cfg_obj_t *obj = NULL;
	const cfg_listelt_t *element;
512
	isc_symtab_t *symtab = NULL;
513 514 515 516
	dns_fixedname_t fixed;
	const char *str;
	dns_name_t *name;
	isc_buffer_t b;
517 518

	static intervaltable intervals[] = {
519 520 521 522 523 524 525 526 527
	{ "cleaning-interval", 60, 28 * 24 * 60 },	/* 28 days */
	{ "heartbeat-interval", 60, 28 * 24 * 60 },	/* 28 days */
	{ "interface-interval", 60, 28 * 24 * 60 },	/* 28 days */
	{ "max-transfer-idle-in", 60, 28 * 24 * 60 },	/* 28 days */
	{ "max-transfer-idle-out", 60, 28 * 24 * 60 },	/* 28 days */
	{ "max-transfer-time-in", 60, 28 * 24 * 60 },	/* 28 days */
	{ "max-transfer-time-out", 60, 28 * 24 * 60 },	/* 28 days */
	{ "sig-validity-interval", 86400, 10 * 366 },	/* 10 years */
	{ "statistics-interval", 60, 28 * 24 * 60 },	/* 28 days */
528 529 530 531 532 533 534 535
	};

	/*
	 * Check that fields specified in units of time other than seconds
	 * have reasonable values.
	 */
	for (i = 0; i < sizeof(intervals) / sizeof(intervals[0]); i++) {
		isc_uint32_t val;
536
		obj = NULL;
537 538 539 540
		(void)cfg_map_get(options, intervals[i].name, &obj);
		if (obj == NULL)
			continue;
		val = cfg_obj_asuint32(obj);
541 542 543 544 545 546 547
		if (val > intervals[i].max) {
			cfg_obj_log(obj, logctx, ISC_LOG_ERROR,
				    "%s '%u' is out of range (0..%u)",
				    intervals[i].name, val,
				    intervals[i].max);
			result = ISC_R_RANGE;
		} else if (val > (ISC_UINT32_MAX / intervals[i].scale)) {
548 549 550 551 552 553
			cfg_obj_log(obj, logctx, ISC_LOG_ERROR,
				    "%s '%d' is out of range",
				    intervals[i].name, val);
			result = ISC_R_RANGE;
		}
	}
554 555 556 557 558 559 560 561 562 563 564 565
	obj = NULL;
	(void)cfg_map_get(options, "preferred-glue", &obj);
	if (obj != NULL) {
		const char *str;
                str = cfg_obj_asstring(obj);
                if (strcasecmp(str, "a") != 0 &&
		    strcasecmp(str, "aaaa") != 0 &&
		    strcasecmp(str, "none") != 0)
			cfg_obj_log(obj, logctx, ISC_LOG_ERROR,
				    "preferred-glue unexpected value '%s'",
				    str);
	}
566 567 568 569
	obj = NULL;
	(void)cfg_map_get(options, "root-delegation-only", &obj);
	if (obj != NULL) {
		if (!cfg_obj_isvoid(obj)) {
570 571
			const cfg_listelt_t *element;
			const cfg_obj_t *exclude;
572
			const char *str;
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
			dns_fixedname_t fixed;
			dns_name_t *name;
			isc_buffer_t b;

			dns_fixedname_init(&fixed);
			name = dns_fixedname_name(&fixed);
			for (element = cfg_list_first(obj);
			     element != NULL;
			     element = cfg_list_next(element)) {
				exclude = cfg_listelt_value(element);
				str = cfg_obj_asstring(exclude);
				isc_buffer_init(&b, str, strlen(str));
				isc_buffer_add(&b, strlen(str));
				tresult = dns_name_fromtext(name, &b,
							   dns_rootname,
                                                           ISC_FALSE, NULL);
				if (tresult != ISC_R_SUCCESS) {
					cfg_obj_log(obj, logctx, ISC_LOG_ERROR,
						    "bad domain name '%s'",
						    str);
					result = tresult;
				}
			}
		}
	}
598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615
       
	/*
	 * Set supported DNSSEC algorithms.
	 */
	obj = NULL;
	(void)cfg_map_get(options, "disable-algorithms", &obj);
	if (obj != NULL) {
		for (element = cfg_list_first(obj);
		     element != NULL;
		     element = cfg_list_next(element))
		{
			obj = cfg_listelt_value(element);
			tresult = disabled_algorithms(obj, logctx);
			if (tresult != ISC_R_SUCCESS)
				result = tresult;
		}
	}

616 617 618
	dns_fixedname_init(&fixed);
	name = dns_fixedname_name(&fixed);

619 620 621 622 623 624
	/*
	 * Check the DLV zone name.
	 */
	obj = NULL;
	(void)cfg_map_get(options, "dnssec-lookaside", &obj);
	if (obj != NULL) {
625
		tresult = isc_symtab_create(mctx, 100, freekey, mctx,
626
					    ISC_FALSE, &symtab);
627
		if (tresult != ISC_R_SUCCESS)
628
			result = tresult;
629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645
		for (element = cfg_list_first(obj);
		     element != NULL;
		     element = cfg_list_next(element))
		{
			const char *dlv;

			obj = cfg_listelt_value(element);

			dlv = cfg_obj_asstring(cfg_tuple_get(obj, "domain"));
			isc_buffer_init(&b, dlv, strlen(dlv));
			isc_buffer_add(&b, strlen(dlv));
			tresult = dns_name_fromtext(name, &b, dns_rootname,
						    ISC_TRUE, NULL);
			if (tresult != ISC_R_SUCCESS) {
				cfg_obj_log(obj, logctx, ISC_LOG_ERROR,
					    "bad domain name '%s'", dlv);
				result = tresult;
646
				continue;
647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680
			}
			if (symtab != NULL) {
				tresult = nameexist(obj, dlv, 1, symtab,
						    "dnssec-lookaside '%s': "
						    "already exists previous "
						    "definition: %s:%u",
						    logctx, mctx);
				if (tresult != ISC_R_SUCCESS &&
				    result == ISC_R_SUCCESS)
					result = tresult;
			}
			/*
			 * XXXMPA to be removed when multiple lookaside
			 * namespaces are supported.
			 */
			if (!dns_name_equal(dns_rootname, name)) {
				cfg_obj_log(obj, logctx, ISC_LOG_ERROR,
					    "dnssec-lookaside '%s': "
					    "non-root not yet supported", dlv);
				if (result == ISC_R_SUCCESS)
					result = ISC_R_FAILURE;
			}
			dlv = cfg_obj_asstring(cfg_tuple_get(obj,
					       "trust-anchor"));
			isc_buffer_init(&b, dlv, strlen(dlv));
			isc_buffer_add(&b, strlen(dlv));
			tresult = dns_name_fromtext(name, &b, dns_rootname,
						    ISC_TRUE, NULL);
			if (tresult != ISC_R_SUCCESS) {
				cfg_obj_log(obj, logctx, ISC_LOG_ERROR,
					    "bad domain name '%s'", dlv);
				if (result == ISC_R_SUCCESS)
					result = tresult;
			}
681
		}
682 683
		if (symtab != NULL)
			isc_symtab_destroy(&symtab);
684
	}
685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709

	/*
	 * Check dnssec-must-be-secure.
	 */
	obj = NULL;
	(void)cfg_map_get(options, "dnssec-must-be-secure", &obj);
	if (obj != NULL) {
		isc_symtab_t *symtab = NULL;
		tresult = isc_symtab_create(mctx, 100, freekey, mctx,
					    ISC_FALSE, &symtab);
		if (tresult != ISC_R_SUCCESS)
			result = tresult;
		for (element = cfg_list_first(obj);
		     element != NULL;
		     element = cfg_list_next(element))
		{
			obj = cfg_listelt_value(element);
			tresult = mustbesecure(obj, symtab, logctx, mctx);
			if (tresult != ISC_R_SUCCESS)
				result = tresult;
		}
		if (symtab != NULL)
			isc_symtab_destroy(&symtab);
	}

710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762
	/*
	 * Check empty zone configuration.
	 */
	obj = NULL;
	(void)cfg_map_get(options, "empty-server", &obj);
	if (obj != NULL) {
		str = cfg_obj_asstring(obj);
		isc_buffer_init(&b, str, strlen(str));
		isc_buffer_add(&b, strlen(str));
		tresult = dns_name_fromtext(dns_fixedname_name(&fixed), &b,
					    dns_rootname, ISC_FALSE, NULL);
		if (tresult != ISC_R_SUCCESS) {
			cfg_obj_log(obj, logctx, ISC_LOG_ERROR,
				    "empty-server: invalid name '%s'", str);
			result = ISC_R_FAILURE;
		}
	}

	obj = NULL;
	(void)cfg_map_get(options, "empty-contact", &obj);
	if (obj != NULL) {
		str = cfg_obj_asstring(obj);
		isc_buffer_init(&b, str, strlen(str));
		isc_buffer_add(&b, strlen(str));
		tresult = dns_name_fromtext(dns_fixedname_name(&fixed), &b,
					    dns_rootname, ISC_FALSE, NULL);
		if (tresult != ISC_R_SUCCESS) {
			cfg_obj_log(obj, logctx, ISC_LOG_ERROR,
				    "empty-contact: invalid name '%s'", str);
			result = ISC_R_FAILURE;
		}
	}

	obj = NULL;
	(void)cfg_map_get(options, "disable-empty-zone", &obj);
	for (element = cfg_list_first(obj);
	     element != NULL;
	     element = cfg_list_next(element))
	{
		obj = cfg_listelt_value(element);
		str = cfg_obj_asstring(obj);
		isc_buffer_init(&b, str, strlen(str));
		isc_buffer_add(&b, strlen(str));
		tresult = dns_name_fromtext(dns_fixedname_name(&fixed), &b,
					    dns_rootname, ISC_FALSE, NULL);
		if (tresult != ISC_R_SUCCESS) {
			cfg_obj_log(obj, logctx, ISC_LOG_ERROR,
				    "disable-empty-zone: invalid name '%s'",
				    str);
			result = ISC_R_FAILURE;
		}
	}

763 764 765
	return (result);
}

766
static isc_result_t
767
get_masters_def(const cfg_obj_t *cctx, const char *name, const cfg_obj_t **ret) {
768
	isc_result_t result;
769 770
	const cfg_obj_t *masters = NULL;
	const cfg_listelt_t *elt;
771 772 773 774 775 776 777

	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)) {
778
		const cfg_obj_t *list;
779 780 781 782 783 784 785 786 787 788 789 790 791 792
		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);
}

static isc_result_t
793 794
validate_masters(const cfg_obj_t *obj, const cfg_obj_t *config,
	         isc_uint32_t *countp, isc_log_t *logctx, isc_mem_t *mctx)
795 796 797 798 799 800
{
	isc_result_t result = ISC_R_SUCCESS;
	isc_result_t tresult;
	isc_uint32_t count = 0;
	isc_symtab_t *symtab = NULL;
	isc_symvalue_t symvalue;
801 802
	const cfg_listelt_t *element;
	const cfg_listelt_t **stack = NULL;
803
	isc_uint32_t stackcount = 0, pushed = 0;
804
	const cfg_obj_t *list;
805 806 807

	REQUIRE(countp != NULL);
	result = isc_symtab_create(mctx, 100, NULL, NULL, ISC_FALSE, &symtab);
808 809
	if (result != ISC_R_SUCCESS) {
		*countp = count;
810
		return (result);
811
	}
812 813 814 815 816 817 818 819 820

 newlist:
	list = cfg_tuple_get(obj, "addresses");
	element = cfg_list_first(list);
 resume:	
	for ( ;
	     element != NULL;
	     element = cfg_list_next(element))
	{
821
		const char *listname;
822 823
		const cfg_obj_t *addr;
		const cfg_obj_t *key;
824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840

		addr = cfg_tuple_get(cfg_listelt_value(element),
				     "masterselement");
		key = cfg_tuple_get(cfg_listelt_value(element), "key");

		if (cfg_obj_issockaddr(addr)) {
			count++;
			continue;
		}
		if (!cfg_obj_isvoid(key)) {
			cfg_obj_log(key, logctx, ISC_LOG_ERROR,
				    "unexpected token '%s'",
				    cfg_obj_asstring(key));
			if (result == ISC_R_SUCCESS)
				result = ISC_R_FAILURE;
		}
		listname = cfg_obj_asstring(addr);
841
		symvalue.as_cpointer = addr;
842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887
		tresult = isc_symtab_define(symtab, listname, 1, symvalue,
					    isc_symexists_reject);
		if (tresult == ISC_R_EXISTS)
			continue;
		tresult = get_masters_def(config, listname, &obj);
		if (tresult != ISC_R_SUCCESS) {
			if (result == ISC_R_SUCCESS)
				result = tresult;
			cfg_obj_log(addr, logctx, ISC_LOG_ERROR,
				    "unable to find masters list '%s'",
				    listname);
			continue;
		}
		/* 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;
		}
		stack[pushed++] = cfg_list_next(element);
		goto newlist;
	}
	if (pushed != 0) {
		element = stack[--pushed];
		goto resume;
	}
 cleanup:
	if (stack != NULL)
		isc_mem_put(mctx, stack, stackcount * sizeof(*stack));
	isc_symtab_destroy(&symtab);
	*countp = count;
	return (result);
}

888
static isc_result_t
889
check_update_policy(const cfg_obj_t *policy, isc_log_t *logctx) {
890 891
	isc_result_t result = ISC_R_SUCCESS;
	isc_result_t tresult;
892 893
	const cfg_listelt_t *element;
	const cfg_listelt_t *element2;
894
	dns_fixedname_t fixed;
895
	const char *str;
896 897 898 899 900 901
	isc_buffer_t b;

	for (element = cfg_list_first(policy);
	     element != NULL;
	     element = cfg_list_next(element))
	{
902 903 904 905 906
		const cfg_obj_t *stmt = cfg_listelt_value(element);
		const cfg_obj_t *identity = cfg_tuple_get(stmt, "identity");
		const cfg_obj_t *matchtype = cfg_tuple_get(stmt, "matchtype");
		const cfg_obj_t *dname = cfg_tuple_get(stmt, "name");
		const cfg_obj_t *typelist = cfg_tuple_get(stmt, "types");
907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930

		dns_fixedname_init(&fixed);
		str = cfg_obj_asstring(identity);
		isc_buffer_init(&b, str, strlen(str));
		isc_buffer_add(&b, strlen(str));
		tresult = dns_name_fromtext(dns_fixedname_name(&fixed), &b,
                                            dns_rootname, ISC_FALSE, NULL);
		if (tresult != ISC_R_SUCCESS) {
			cfg_obj_log(identity, logctx, ISC_LOG_ERROR,
				    "'%s' is not a valid name", str);
			result = tresult;
		}

		dns_fixedname_init(&fixed);
		str = cfg_obj_asstring(dname);
		isc_buffer_init(&b, str, strlen(str));
		isc_buffer_add(&b, strlen(str));
		tresult = dns_name_fromtext(dns_fixedname_name(&fixed), &b,
					    dns_rootname, ISC_FALSE, NULL);
		if (tresult != ISC_R_SUCCESS) {
			cfg_obj_log(dname, logctx, ISC_LOG_ERROR,
				    "'%s' is not a valid name", str);
			result = tresult;
		}
931 932 933 934 935 936 937
		if (tresult == ISC_R_SUCCESS &&
		    strcasecmp(cfg_obj_asstring(matchtype), "wildcard") == 0 &&
		    !dns_name_iswildcard(dns_fixedname_name(&fixed))) {
			cfg_obj_log(identity, logctx, ISC_LOG_ERROR,
				    "'%s' is not a wildcard", str);
			result = ISC_R_FAILURE;
		}
938 939 940 941 942

		for (element2 = cfg_list_first(typelist);
		     element2 != NULL;
		     element2 = cfg_list_next(element2))
		{
943
			const cfg_obj_t *typeobj;
944 945 946 947
			isc_textregion_t r;
			dns_rdatatype_t type;
			
			typeobj = cfg_listelt_value(element2);
948 949
			DE_CONST(cfg_obj_asstring(typeobj), r.base);
			r.length = strlen(r.base);
950 951 952 953

			tresult = dns_rdatatype_fromtext(&type, &r);
			if (tresult != ISC_R_SUCCESS) {
				cfg_obj_log(typeobj, logctx, ISC_LOG_ERROR,
954
                                            "'%s' is not a valid type", r.base);
955 956 957 958 959 960 961
				result = tresult;
			}
		}
	}
	return (result);
}

962 963 964 965 966
#define MASTERZONE	1
#define SLAVEZONE	2
#define STUBZONE	4
#define HINTZONE	8
#define FORWARDZONE	16
967
#define DELEGATIONZONE	32
968
#define CHECKACL	64
969 970 971 972 973 974 975

typedef struct {
	const char *name;
	int allowed;
} optionstable;

static isc_result_t
976 977 978 979
check_zoneconf(const cfg_obj_t *zconfig, const cfg_obj_t *voptions,
	       const cfg_obj_t *config, isc_symtab_t *symtab,
	       dns_rdataclass_t defclass, cfg_aclconfctx_t *actx,
	       isc_log_t *logctx, isc_mem_t *mctx)
980
{
981 982 983
	const char *zname;
	const char *typestr;
	unsigned int ztype;
984 985
	const cfg_obj_t *zoptions;
	const cfg_obj_t *obj = NULL;
Brian Wellington's avatar
Brian Wellington committed
986
	isc_result_t result = ISC_R_SUCCESS;
987
	isc_result_t tresult;
988
	unsigned int i;
989
	dns_rdataclass_t zclass;
990 991
	dns_fixedname_t fixedname;
	isc_buffer_t b;
992
	isc_boolean_t root = ISC_FALSE;
993 994

	static optionstable options[] = {
995 996 997
	{ "allow-query", MASTERZONE | SLAVEZONE | STUBZONE | CHECKACL },
	{ "allow-notify", SLAVEZONE | CHECKACL },
	{ "allow-transfer", MASTERZONE | SLAVEZONE | CHECKACL },
998 999 1000
	{ "notify", MASTERZONE | SLAVEZONE },
	{ "also-notify", MASTERZONE | SLAVEZONE },
	{ "dialup", MASTERZONE | SLAVEZONE | STUBZONE },
1001
	{ "delegation-only", HINTZONE | STUBZONE },
1002 1003 1004 1005
	{ "forward", MASTERZONE | SLAVEZONE | STUBZONE | FORWARDZONE},
	{ "forwarders", MASTERZONE | SLAVEZONE | STUBZONE | FORWARDZONE},
	{ "maintain-ixfr-base", MASTERZONE | SLAVEZONE },
	{ "max-ixfr-log-size", MASTERZONE | SLAVEZONE },
1006 1007
	{ "notify-source", MASTERZONE | SLAVEZONE },
	{ "notify-source-v6", MASTERZONE | SLAVEZONE },
1008 1009
	{ "transfer-source", SLAVEZONE | STUBZONE },
	{ "transfer-source-v6", SLAVEZONE | STUBZONE },
1010 1011 1012 1013 1014 1015 1016 1017 1018 1019
	{ "max-transfer-time-in", SLAVEZONE | STUBZONE },
	{ "max-transfer-time-out", MASTERZONE | SLAVEZONE },
	{ "max-transfer-idle-in", SLAVEZONE | STUBZONE },
	{ "max-transfer-idle-out", MASTERZONE | SLAVEZONE },
	{ "max-retry-time", SLAVEZONE | STUBZONE },
	{ "min-retry-time", SLAVEZONE | STUBZONE },
	{ "max-refresh-time", SLAVEZONE | STUBZONE },
	{ "min-refresh-time", SLAVEZONE | STUBZONE },
	{ "sig-validity-interval", MASTERZONE },
	{ "zone-statistics", MASTERZONE | SLAVEZONE | STUBZONE },
1020 1021
	{ "allow-update", MASTERZONE | CHECKACL },
	{ "allow-update-forwarding", SLAVEZONE | CHECKACL },
1022
	{ "file", MASTERZONE | SLAVEZONE | STUBZONE | HINTZONE },
1023
	{ "journal", MASTERZONE | SLAVEZONE },
1024 1025 1026 1027 1028 1029
	{ "ixfr-base", MASTERZONE | SLAVEZONE },
	{ "ixfr-tmp-file", MASTERZONE | SLAVEZONE },
	{ "masters", SLAVEZONE | STUBZONE },
	{ "pubkey", MASTERZONE | SLAVEZONE | STUBZONE },
	{ "update-policy", MASTERZONE },
	{ "database", MASTERZONE | SLAVEZONE | STUBZONE },
1030
	{ "key-directory", MASTERZONE },
1031
	{ "check-wildcard", MASTERZONE },
1032 1033
	{ "check-mx", MASTERZONE },
	{ "integrity-check", MASTERZONE },
1034 1035
	{ "check-mx-cname", MASTERZONE },
	{ "check-srv-cname", MASTERZONE },
1036
	{ "masterfile-format", MASTERZONE | SLAVEZONE | STUBZONE | HINTZONE },
1037
	{ "update-check-ksk", MASTERZONE },
1038
	{ "try-tcp-refresh", SLAVEZONE },
1039 1040 1041 1042 1043 1044 1045 1046 1047
	};

	static optionstable dialups[] = {
	{ "notify", MASTERZONE | SLAVEZONE },
	{ "notify-passive", SLAVEZONE },
	{ "refresh", SLAVEZONE | STUBZONE },
	{ "passive", SLAVEZONE | STUBZONE },
	};

Brian Wellington's avatar
bugs  
Brian Wellington committed
1048 1049 1050
	zname = cfg_obj_asstring(cfg_tuple_get(zconfig, "name"));

	zoptions = cfg_tuple_get(zconfig, "options");
1051 1052

	obj = NULL;
Brian Wellington's avatar
bugs  
Brian Wellington committed
1053
	(void)cfg_map_get(zoptions, "type", &obj);
1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070
	if (obj == NULL) {
		cfg_obj_log(zconfig, logctx, ISC_LOG_ERROR,
			    "zone '%s': type not present", zname);
		return (ISC_R_FAILURE);
	}

	typestr = cfg_obj_asstring(obj);
	if (strcasecmp(typestr, "master") == 0)
		ztype = MASTERZONE;
	else if (strcasecmp(typestr, "slave") == 0)
		ztype = SLAVEZONE;
	else if (strcasecmp(typestr, "stub") == 0)
		ztype = STUBZONE;
	else if (strcasecmp(typestr, "forward") == 0)
		ztype = FORWARDZONE;
	else if (strcasecmp(typestr, "hint") == 0)
		ztype = HINTZONE;
1071 1072
	else if (strcasecmp(typestr, "delegation-only") == 0)
		ztype = DELEGATIONZONE;
1073 1074 1075 1076 1077 1078 1079
	else {
		cfg_obj_log(obj, logctx, ISC_LOG_ERROR,
			    "zone '%s': invalid type %s",
			    zname, typestr);
		return (ISC_R_FAILURE);
	}

1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101
	obj = cfg_tuple_get(zconfig, "class");
	if (cfg_obj_isstring(obj)) {
		isc_textregion_t r;

		DE_CONST(cfg_obj_asstring(obj), r.base);
		r.length = strlen(r.base);
		result = dns_rdataclass_fromtext(&zclass, &r);
		if (result != ISC_R_SUCCESS) {
			cfg_obj_log(obj, logctx, ISC_LOG_ERROR,
				    "zone '%s': invalid class %s",
				    zname, r.base);
			return (ISC_R_FAILURE);
		}
		if (zclass != defclass) {
			cfg_obj_log(obj, logctx, ISC_LOG_ERROR,
				    "zone '%s': class '%s' does not "
				    "match view/default class",
				    zname, r.base);
			return (ISC_R_FAILURE);
		}
	}

1102 1103
	/*
	 * Look for an already existing zone.
1104 1105
	 * We need to make this cannonical as isc_symtab_define()
	 * deals with strings.
1106
	 */
1107 1108 1109
	dns_fixedname_init(&fixedname);
	isc_buffer_init(&b, zname, strlen(zname));
	isc_buffer_add(&b, strlen(zname));
1110
	tresult = dns_name_fromtext(dns_fixedname_name(&fixedname), &b,
1111
				    dns_rootname, ISC_TRUE, NULL);
1112
	if (tresult != ISC_R_SUCCESS) {
1113
		cfg_obj_log(zconfig, logctx, ISC_LOG_ERROR,
1114
			    "zone '%s': is not a valid name", zname);
1115
		result = ISC_R_FAILURE;
1116 1117
	} else {
		char namebuf[DNS_NAME_FORMATSIZE];
1118

1119 1120
		dns_name_format(dns_fixedname_name(&fixedname),
				namebuf, sizeof(namebuf));
1121
		tresult = nameexist(zconfig, namebuf, ztype == HINTZONE ? 1 : 2,
1122 1123
				    symtab, "zone '%s': already exists "
				    "previous definition: %s:%u", logctx, mctx);
1124 1125
		if (tresult != ISC_R_SUCCESS)
			result = tresult;
1126 1127 1128
		if (dns_name_equal(dns_fixedname_name(&fixedname),
				   dns_rootname))
			root = ISC_TRUE;
1129
	}
1130 1131 1132

	/*
	 * Look for inappropriate options for the given zone type.
1133
	 * Check that ACLs expand correctly.
1134
	 */
1135 1136 1137 1138 1139 1140
	for (i = 0; i < sizeof(options) / sizeof(options[0]); i++) {
		obj = NULL;
		if ((options[i].allowed & ztype) == 0 &&
		    cfg_map_get(zoptions, options[i].name, &obj) ==
		    ISC_R_SUCCESS)
		{
1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152
			if (strcmp(options[i].name, "allow-update") != 0 ||
			    ztype != SLAVEZONE) {
				cfg_obj_log(obj, logctx, ISC_LOG_ERROR,
					    "option '%s' is not allowed "
					    "in '%s' zone '%s'",
					    options[i].name, typestr, zname);
					result = ISC_R_FAILURE;
			} else
				cfg_obj_log(obj, logctx, ISC_LOG_WARNING,
					    "option '%s' is not allowed "
					    "in '%s' zone '%s'",
					    options[i].name, typestr, zname);
1153
		}
1154 1155 1156 1157
		obj = NULL;
		if ((options[i].allowed & ztype) != 0 &&
		    (options[i].allowed & CHECKACL) != 0) {

1158
			tresult = checkacl(options[i].name, actx, zconfig,
1159 1160 1161 1162 1163
				           voptions, config, logctx, mctx);
			if (tresult != ISC_R_SUCCESS)
				result = tresult;
		}

1164 1165
	}

1166 1167 1168
	/*
	 * Slave & stub zones must have a "masters" field.
	 */
1169 1170 1171
	if (ztype == SLAVEZONE || ztype == STUBZONE) {
		obj = NULL;
		if (cfg_map_get(zoptions, "masters", &obj) != ISC_R_SUCCESS) {
1172
			cfg_obj_log(zoptions, logctx, ISC_LOG_ERROR,
1173 1174 1175
				    "zone '%s': missing 'masters' entry",
				    zname);
			result = ISC_R_FAILURE;
1176
		} else {
1177 1178 1179 1180 1181 1182
			isc_uint32_t count;
			tresult = validate_masters(obj, config, &count,
						   logctx, mctx);
			if (tresult != ISC_R_SUCCESS && result == ISC_R_SUCCESS)
				result = tresult;
			if (tresult == ISC_R_SUCCESS && count == 0) {
1183 1184 1185 1186 1187
				cfg_obj_log(zoptions, logctx, ISC_LOG_ERROR,
					    "zone '%s': empty 'masters' entry",
					    zname);
				result = ISC_R_FAILURE;
			}
1188
		}
1189 1190
	}

1191 1192 1193
	/*
	 * Master zones can't have both "allow-update" and "update-policy".
	 */
1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205
	if (ztype == MASTERZONE) {
		isc_result_t res1, res2;
		obj = NULL;
		res1 = cfg_map_get(zoptions, "allow-update", &obj);
		obj = NULL;
		res2 = cfg_map_get(zoptions, "update-policy", &obj);
		if (res1 == ISC_R_SUCCESS && res2 == ISC_R_SUCCESS) {
			cfg_obj_log(obj, logctx, ISC_LOG_ERROR,
				    "zone '%s': 'allow-update' is ignored "
				    "when 'update-policy' is present",
				    zname);
			result = ISC_R_FAILURE;
1206 1207 1208
		} else if (res2 == ISC_R_SUCCESS &&
			   check_update_policy(obj, logctx) != ISC_R_SUCCESS)
			result = ISC_R_FAILURE;
1209 1210
	}

1211 1212 1213
	/*
	 * Check the excessively complicated "dialup" option.
	 */
1214
	if (ztype == MASTERZONE || ztype == SLAVEZONE || ztype == STUBZONE) {
1215
		const cfg_obj_t *dialup = NULL;
1216
		(void)cfg_map_get(zoptions, "dialup", &dialup);
1217
		if (dialup != NULL && cfg_obj_isstring(dialup)) {
1218
			const char *str = cfg_obj_asstring(dialup);
1219 1220 1221 1222 1223 1224 1225 1226 1227