check.c 41.9 KB
Newer Older
1
/*
Mark Andrews's avatar
Mark Andrews committed
2 3
 * Copyright (C) 2004  Internet Systems Consortium, Inc. ("ISC")
 * Copyright (C) 2001-2003  Internet Software Consortium.
4 5 6 7 8
 *
 * Permission to use, copy, modify, and distribute this software for any
 * 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 1.50 2004/11/09 21:24:20 marka Exp $ */
19 20 21 22 23 24

#include <config.h>

#include <stdlib.h>
#include <string.h>

25
#include <isc/buffer.h>
26
#include <isc/log.h>
27
#include <isc/mem.h>
28
#include <isc/netaddr.h>
29
#include <isc/parseint.h>
30
#include <isc/region.h>
31
#include <isc/result.h>
32
#include <isc/sockaddr.h>
33
#include <isc/symtab.h>
Brian Wellington's avatar
Brian Wellington committed
34
#include <isc/util.h>
35

36
#include <dns/fixedname.h>
Mark Andrews's avatar
Mark Andrews committed
37 38
#include <dns/rdataclass.h>
#include <dns/rdatatype.h>
39
#include <dns/secalg.h>
40 41

#include <isccfg/cfg.h>
42 43

#include <bind9/check.h>
44

45 46 47 48 49 50 51
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
52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 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
static isc_result_t
check_orderent(cfg_obj_t *ent, isc_log_t *logctx) {
	isc_result_t result = ISC_R_SUCCESS;
	isc_result_t tresult;
	isc_textregion_t r;
	dns_fixedname_t fixed;
	cfg_obj_t *obj;
	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;
120 121
	} else if (strcasecmp(cfg_obj_asstring(obj), "fixed") == 0) {
		cfg_obj_log(obj, logctx, ISC_LOG_WARNING,
Brian Wellington's avatar
Brian Wellington committed
122
			    "rrset-order: order 'fixed' not implemented");
123
	} else if (/* strcasecmp(cfg_obj_asstring(obj), "fixed") != 0 && */
Mark Andrews's avatar
Mark Andrews committed
124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154
		   strcasecmp(cfg_obj_asstring(obj), "random") != 0 &&
		   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
check_order(cfg_obj_t *options, isc_log_t *logctx) {
	isc_result_t result = ISC_R_SUCCESS;
	isc_result_t tresult;
	cfg_listelt_t *element;
	cfg_obj_t *obj = NULL;

	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);
}

155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214
static isc_result_t
check_dual_stack(cfg_obj_t *options, isc_log_t *logctx) {
	cfg_listelt_t *element;
	cfg_obj_t *alternates = NULL;
	cfg_obj_t *value;
	cfg_obj_t *obj;
	char *str;
	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);
}

215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230
static isc_result_t
check_forward(cfg_obj_t *options, isc_log_t *logctx) {
	cfg_obj_t *forward = NULL;
	cfg_obj_t *forwarders = NULL;

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

	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);
}

231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281
static isc_result_t
disabled_algorithms(cfg_obj_t *disabled, isc_log_t *logctx) {
	isc_result_t result = ISC_R_SUCCESS;
	isc_result_t tresult;
	cfg_listelt_t *element;
	const char *str;
	isc_buffer_t b;
	dns_fixedname_t fixed;
	dns_name_t *name;
	cfg_obj_t *obj;

	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;

		r.base = cfg_obj_asstring(cfg_listelt_value(element));
		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,
				    ISC_LOG_ERROR, "invalid algorithm");
			result = tresult;
		}
	}
	return (result);
}

282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314
static isc_result_t
nameexist(cfg_obj_t *obj, const char *name, int value, isc_symtab_t *symtab,
	  const char *fmt, isc_log_t *logctx, isc_mem_t *mctx)
{
	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);
	symvalue.as_pointer = obj;
	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);
		file = cfg_obj_file(symvalue.as_pointer);
		line = cfg_obj_line(symvalue.as_pointer);

		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);
}

315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332
static isc_result_t
mustbesecure(cfg_obj_t *secure, isc_symtab_t *symtab, isc_log_t *logctx,
	     isc_mem_t *mctx)
{
	cfg_obj_t *obj;
	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));
333 334
	result = dns_name_fromtext(name, &b, dns_rootname, ISC_FALSE, NULL);
	if (result != ISC_R_SUCCESS) {
335 336 337 338
		cfg_obj_log(obj, logctx, ISC_LOG_ERROR,
			    "bad domain name '%s'", str);
	} else {
		dns_name_format(name, namebuf, sizeof(namebuf));
339 340 341 342
		result = nameexist(secure, namebuf, 1, symtab,
				   "dnssec-must-be-secure '%s': already "
				   "exists previous definition: %s:%u",
				   logctx, mctx);
343 344 345 346
	}
	return (result);
}

347 348 349
typedef struct {
	const char *name;
	unsigned int scale;
350
	unsigned int max;
351 352 353
} intervaltable;

static isc_result_t
354
check_options(cfg_obj_t *options, isc_log_t *logctx, isc_mem_t *mctx) {
355
	isc_result_t result = ISC_R_SUCCESS;
356
	isc_result_t tresult;
357
	unsigned int i;
358
	cfg_obj_t *obj = NULL;
359
	cfg_listelt_t *element;
360
	isc_symtab_t *symtab = NULL;
361 362

	static intervaltable intervals[] = {
363 364 365 366 367 368 369 370 371
	{ "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 */
372 373 374 375 376 377 378 379
	};

	/*
	 * 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;
380
		obj = NULL;
381 382 383 384
		(void)cfg_map_get(options, intervals[i].name, &obj);
		if (obj == NULL)
			continue;
		val = cfg_obj_asuint32(obj);
385 386 387 388 389 390 391
		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)) {
392 393 394 395 396 397
			cfg_obj_log(obj, logctx, ISC_LOG_ERROR,
				    "%s '%d' is out of range",
				    intervals[i].name, val);
			result = ISC_R_RANGE;
		}
	}
398 399 400 401 402 403 404 405 406 407 408 409
	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);
	}
410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441
	obj = NULL;
	(void)cfg_map_get(options, "root-delegation-only", &obj);
	if (obj != NULL) {
		if (!cfg_obj_isvoid(obj)) {
			cfg_listelt_t *element;
			cfg_obj_t *exclude;
			char *str;
			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;
				}
			}
		}
	}
442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459
       
	/*
	 * 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;
		}
	}

460 461 462 463 464 465
	/*
	 * Check the DLV zone name.
	 */
	obj = NULL;
	(void)cfg_map_get(options, "dnssec-lookaside", &obj);
	if (obj != NULL) {
466 467 468
		tresult = isc_symtab_create(mctx, 100, freekey, mctx,
					    ISC_TRUE, &symtab);
		if (tresult != ISC_R_SUCCESS)
469
			result = tresult;
470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526
		for (element = cfg_list_first(obj);
		     element != NULL;
		     element = cfg_list_next(element))
		{
			dns_fixedname_t fixedname;
			dns_name_t *name;
			const char *dlv;
			isc_buffer_t b;

			obj = cfg_listelt_value(element);

			dlv = cfg_obj_asstring(cfg_tuple_get(obj, "domain"));
			dns_fixedname_init(&fixedname);
			name = dns_fixedname_name(&fixedname);
			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;
			}
			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"));
			dns_fixedname_init(&fixedname);
			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;
			}
527
		}
528 529
		if (symtab != NULL)
			isc_symtab_destroy(&symtab);
530
	}
531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555

	/*
	 * 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);
	}

556 557 558
	return (result);
}

559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678
static isc_result_t
get_masters_def(cfg_obj_t *cctx, char *name, cfg_obj_t **ret) {
	isc_result_t result;
	cfg_obj_t *masters = NULL;
	cfg_listelt_t *elt;

	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)) {
		cfg_obj_t *list;
		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
validate_masters(cfg_obj_t *obj, cfg_obj_t *config, isc_uint32_t *countp,
		 isc_log_t *logctx, isc_mem_t *mctx)
{
	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;
	cfg_listelt_t *element;
	cfg_listelt_t **stack = NULL;
	isc_uint32_t stackcount = 0, pushed = 0;
	cfg_obj_t *list;

	REQUIRE(countp != NULL);
	result = isc_symtab_create(mctx, 100, NULL, NULL, ISC_FALSE, &symtab);
	if (result != ISC_R_SUCCESS)
		return (result);

 newlist:
	list = cfg_tuple_get(obj, "addresses");
	element = cfg_list_first(list);
 resume:	
	for ( ;
	     element != NULL;
	     element = cfg_list_next(element))
	{
		char *listname;
		cfg_obj_t *addr;
		cfg_obj_t *key;

		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);
		symvalue.as_pointer = addr;
		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);
}

679 680 681 682 683
#define MASTERZONE	1
#define SLAVEZONE	2
#define STUBZONE	4
#define HINTZONE	8
#define FORWARDZONE	16
684
#define DELEGATIONZONE	32
685 686 687 688 689 690 691

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

static isc_result_t
692
check_zoneconf(cfg_obj_t *zconfig, cfg_obj_t *config, isc_symtab_t *symtab,
693
	       dns_rdataclass_t defclass, isc_log_t *logctx, isc_mem_t *mctx)
694
{
695 696 697 698 699
	const char *zname;
	const char *typestr;
	unsigned int ztype;
	cfg_obj_t *zoptions;
	cfg_obj_t *obj = NULL;
Brian Wellington's avatar
Brian Wellington committed
700
	isc_result_t result = ISC_R_SUCCESS;
701
	isc_result_t tresult;
702
	unsigned int i;
703
	dns_rdataclass_t zclass;
704 705
	dns_fixedname_t fixedname;
	isc_buffer_t b;
706 707 708

	static optionstable options[] = {
	{ "allow-query", MASTERZONE | SLAVEZONE | STUBZONE },
709
	{ "allow-notify", SLAVEZONE },
710
	{ "allow-transfer", MASTERZONE | SLAVEZONE },
711 712 713
	{ "notify", MASTERZONE | SLAVEZONE },
	{ "also-notify", MASTERZONE | SLAVEZONE },
	{ "dialup", MASTERZONE | SLAVEZONE | STUBZONE },
714
	{ "delegation-only", HINTZONE | STUBZONE },
715 716 717 718
	{ "forward", MASTERZONE | SLAVEZONE | STUBZONE | FORWARDZONE},
	{ "forwarders", MASTERZONE | SLAVEZONE | STUBZONE | FORWARDZONE},
	{ "maintain-ixfr-base", MASTERZONE | SLAVEZONE },
	{ "max-ixfr-log-size", MASTERZONE | SLAVEZONE },
719 720
	{ "notify-source", MASTERZONE | SLAVEZONE },
	{ "notify-source-v6", MASTERZONE | SLAVEZONE },
721 722
	{ "transfer-source", SLAVEZONE | STUBZONE },
	{ "transfer-source-v6", SLAVEZONE | STUBZONE },
723 724 725 726 727 728 729 730 731 732 733
	{ "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 },
	{ "allow-update", MASTERZONE },
734
	{ "allow-update-forwarding", SLAVEZONE },
735
	{ "file", MASTERZONE | SLAVEZONE | STUBZONE | HINTZONE},
736
	{ "journal", MASTERZONE | SLAVEZONE },
737 738 739 740 741 742
	{ "ixfr-base", MASTERZONE | SLAVEZONE },
	{ "ixfr-tmp-file", MASTERZONE | SLAVEZONE },
	{ "masters", SLAVEZONE | STUBZONE },
	{ "pubkey", MASTERZONE | SLAVEZONE | STUBZONE },
	{ "update-policy", MASTERZONE },
	{ "database", MASTERZONE | SLAVEZONE | STUBZONE },
743
	{ "key-directory", MASTERZONE },
744 745 746 747 748 749 750 751 752
	};

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

Brian Wellington's avatar
bugs  
Brian Wellington committed
753 754 755
	zname = cfg_obj_asstring(cfg_tuple_get(zconfig, "name"));

	zoptions = cfg_tuple_get(zconfig, "options");
756 757

	obj = NULL;
Brian Wellington's avatar
bugs  
Brian Wellington committed
758
	(void)cfg_map_get(zoptions, "type", &obj);
759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775
	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;
776 777
	else if (strcasecmp(typestr, "delegation-only") == 0)
		ztype = DELEGATIONZONE;
778 779 780 781 782 783 784
	else {
		cfg_obj_log(obj, logctx, ISC_LOG_ERROR,
			    "zone '%s': invalid type %s",
			    zname, typestr);
		return (ISC_R_FAILURE);
	}

785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806
	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);
		}
	}

807 808
	/*
	 * Look for an already existing zone.
809 810
	 * We need to make this cannonical as isc_symtab_define()
	 * deals with strings.
811
	 */
812 813 814
	dns_fixedname_init(&fixedname);
	isc_buffer_init(&b, zname, strlen(zname));
	isc_buffer_add(&b, strlen(zname));
815
	tresult = dns_name_fromtext(dns_fixedname_name(&fixedname), &b,
816 817
				   dns_rootname, ISC_TRUE, NULL);
	if (result != ISC_R_SUCCESS) {
818
		cfg_obj_log(zconfig, logctx, ISC_LOG_ERROR,
819
			    "zone '%s': is not a valid name", zname);
820
		tresult = ISC_R_FAILURE;
821 822
	} else {
		char namebuf[DNS_NAME_FORMATSIZE];
823

824 825
		dns_name_format(dns_fixedname_name(&fixedname),
				namebuf, sizeof(namebuf));
826 827 828 829 830
		tresult = nameexist(zconfig, namebuf, ztype == HINTZONE ? 1 : 2,
				   symtab, "zone '%s': already exists "
				   "previous definition: %s:%u", logctx, mctx);
		if (tresult != ISC_R_SUCCESS)
			result = tresult;
831
	}
832 833 834 835

	/*
	 * Look for inappropriate options for the given zone type.
	 */
836 837 838 839 840 841
	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)
		{
842 843 844 845 846 847 848 849 850 851 852 853
			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);
854 855 856
		}
	}

857 858 859
	/*
	 * Slave & stub zones must have a "masters" field.
	 */
860 861 862
	if (ztype == SLAVEZONE || ztype == STUBZONE) {
		obj = NULL;
		if (cfg_map_get(zoptions, "masters", &obj) != ISC_R_SUCCESS) {
863
			cfg_obj_log(zoptions, logctx, ISC_LOG_ERROR,
864 865 866
				    "zone '%s': missing 'masters' entry",
				    zname);
			result = ISC_R_FAILURE;
867
		} else {
868 869 870 871 872 873
			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) {
874 875 876 877 878
				cfg_obj_log(zoptions, logctx, ISC_LOG_ERROR,
					    "zone '%s': empty 'masters' entry",
					    zname);
				result = ISC_R_FAILURE;
			}
879
		}
880 881
	}

882 883 884
	/*
	 * Master zones can't have both "allow-update" and "update-policy".
	 */
885 886 887 888 889 890 891 892 893 894 895 896 897 898 899
	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;
		}
	}

900 901 902
	/*
	 * Check the excessively complicated "dialup" option.
	 */
903 904
	if (ztype == MASTERZONE || ztype == SLAVEZONE || ztype == STUBZONE) {
		cfg_obj_t *dialup = NULL;
905
		(void)cfg_map_get(zoptions, "dialup", &dialup);
906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933
		if (dialup != NULL && cfg_obj_isstring(dialup)) {
			char *str = cfg_obj_asstring(dialup);
			for (i = 0;
			     i < sizeof(dialups) / sizeof(dialups[0]);
			     i++)
			{
				if (strcasecmp(dialups[i].name, str) != 0)
					continue;
				if ((dialups[i].allowed & ztype) == 0) {
					cfg_obj_log(obj, logctx,
						    ISC_LOG_ERROR,
						    "dialup type '%s' is not "
						    "allowed in '%s' "
						    "zone '%s'",
						    str, typestr, zname);
					result = ISC_R_FAILURE;
				}
				break;
			}
			if (i == sizeof(dialups) / sizeof(dialups[0])) {
				cfg_obj_log(obj, logctx, ISC_LOG_ERROR,
					    "invalid dialup type '%s' in zone "
					    "'%s'", str, zname);
				result = ISC_R_FAILURE;
			}
		}
	}

934 935 936 937 938 939
	/*
	 * Check that forwarding is reasonable.
	 */
	if (check_forward(zoptions, logctx) != ISC_R_SUCCESS)
		result = ISC_R_FAILURE;

940 941 942
	/*
	 * Check various options.
	 */
943
	tresult = check_options(zoptions, logctx, mctx);
944 945 946
	if (tresult != ISC_R_SUCCESS)
		result = tresult;

947 948 949
	return (result);
}

950
isc_result_t
951
bind9_check_key(cfg_obj_t *key, isc_log_t *logctx) {
952 953 954 955
	cfg_obj_t *algobj = NULL;
	cfg_obj_t *secretobj = NULL;
	const char *keyname = cfg_obj_asstring(cfg_map_getname(key));
	
956 957
	(void)cfg_map_get(key, "algorithm", &algobj);
	(void)cfg_map_get(key, "secret", &secretobj);
958 959 960 961 962
	if (secretobj == NULL || algobj == NULL) {
		cfg_obj_log(key, logctx, ISC_LOG_ERROR,
			    "key '%s' must have both 'secret' and "
			    "'algorithm' defined",
			    keyname);
Brian Wellington's avatar
style  
Brian Wellington committed
963
		return (ISC_R_FAILURE);
964
	}
Brian Wellington's avatar
style  
Brian Wellington committed
965
	return (ISC_R_SUCCESS);
966
}
967 968 969 970 971 972 973 974 975 976 977 978 979 980 981

static isc_result_t
check_keylist(cfg_obj_t *keys, isc_symtab_t *symtab, isc_log_t *logctx) {
	isc_result_t result = ISC_R_SUCCESS;
	isc_result_t tresult;
	cfg_listelt_t *element;

	for (element = cfg_list_first(keys);
	     element != NULL;
	     element = cfg_list_next(element))
	{
		cfg_obj_t *key = cfg_listelt_value(element);
		const char *keyname = cfg_obj_asstring(cfg_map_getname(key));
		isc_symvalue_t symvalue;

982
		symvalue.as_pointer = key;
983 984 985
		tresult = isc_symtab_define(symtab, keyname, 1,
					    symvalue, isc_symexists_reject);
		if (tresult == ISC_R_EXISTS) {
986 987 988 989 990 991 992 993 994 995
			const char *file;
			unsigned int line;

			RUNTIME_CHECK(isc_symtab_lookup(symtab, keyname,
					    1, &symvalue) == ISC_R_SUCCESS);
			file = cfg_obj_file(symvalue.as_pointer);
			line = cfg_obj_line(symvalue.as_pointer);

			if (file == NULL)
				file = "<unknown file>";
996
			cfg_obj_log(key, logctx, ISC_LOG_ERROR,
997 998 999
				    "key '%s': already exists "
				    "previous definition: %s:%u",
				    keyname, file, line);
1000 1001 1002 1003 1004 1005 1006 1007 1008 1009
			result = tresult;
		} else if (tresult != ISC_R_SUCCESS)
			return (tresult);

		tresult = bind9_check_key(key, logctx);
		if (tresult != ISC_R_SUCCESS)
			return (tresult);
	}
	return (result);
}
1010

1011 1012 1013 1014 1015 1016 1017
static isc_result_t
check_servers(cfg_obj_t *servers, isc_log_t *logctx) {
	isc_result_t result = ISC_R_SUCCESS;
	cfg_listelt_t *e1, *e2;
	cfg_obj_t *v1, *v2;
	isc_sockaddr_t *s1, *s2;
	isc_netaddr_t na;
1018 1019 1020 1021
	cfg_obj_t *ts;
	char buf[128];
	const char *xfr;
	isc_buffer_t target;
1022 1023 1024 1025

	for (e1 = cfg_list_first(servers); e1 != NULL; e1 = cfg_list_next(e1)) {
		v1 = cfg_listelt_value(e1);
		s1 = cfg_obj_assockaddr(cfg_map_getname(v1));
1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041
		ts = NULL;
		if (isc_sockaddr_pf(s1) == AF_INET)
			xfr = "transfer-source-v6";
		else
			xfr = "transfer-source";
		(void)cfg_map_get(v1, xfr, &ts);
		if (ts != NULL) {
			isc_netaddr_fromsockaddr(&na, s1);
			isc_buffer_init(&target, buf, sizeof(buf) - 1);
			RUNTIME_CHECK(isc_netaddr_totext(&na, &target)
				      == ISC_R_SUCCESS);
			buf[isc_buffer_usedlength(&target)] = '\0';
			cfg_obj_log(v1, logctx, ISC_LOG_ERROR,
				    "server '%s': %s not valid", buf, xfr);
			result = ISC_R_FAILURE;
		}
1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054
		e2 = e1;
		while ((e2 = cfg_list_next(e2)) != NULL) {
			v2 = cfg_listelt_value(e2);
			s2 = cfg_obj_assockaddr(cfg_map_getname(v2));
			if (isc_sockaddr_eqaddr(s1, s2)) {
				const char *file = cfg_obj_file(v1);
				unsigned int line = cfg_obj_line(v1);

				if (file == NULL)
					file = "<unknown file>";

				isc_netaddr_fromsockaddr(&na, s2);
				isc_buffer_init(&target, buf, sizeof(buf) - 1);
Mark Andrews's avatar
Mark Andrews committed
1055 1056
				RUNTIME_CHECK(isc_netaddr_totext(&na, &target)
					      == ISC_R_SUCCESS);
1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068
				buf[isc_buffer_usedlength(&target)] = '\0';

				cfg_obj_log(v2, logctx, ISC_LOG_ERROR,
					    "server '%s': already exists "
					    "previous definition: %s:%u",
					    buf, file, line);
				result = ISC_R_FAILURE;
			}
		}
	}
	return (result);
}
1069
		
Brian Wellington's avatar
Brian Wellington committed
1070
static isc_result_t
1071
check_viewconf(cfg_obj_t *config, cfg_obj_t *vconfig, dns_rdataclass_t vclass,
1072
	       isc_log_t *logctx, isc_mem_t *mctx)
1073
{
1074
	cfg_obj_t *servers = NULL;
Brian Wellington's avatar
Brian Wellington committed
1075 1076 1077
	cfg_obj_t *zones = NULL;
	cfg_obj_t *keys = NULL;
	cfg_listelt_t *element;
1078
	isc_symtab_t *symtab = NULL;
Brian Wellington's avatar
Brian Wellington committed
1079
	isc_result_t result = ISC_R_SUCCESS;
1080
	isc_result_t tresult = ISC_R_SUCCESS;
Brian Wellington's avatar
Brian Wellington committed
1081

1082 1083 1084 1085
	/*
	 * Check that all zone statements are syntactically correct and
	 * there are no duplicate zones.
	 */
1086
	tresult = isc_symtab_create(mctx, 100, freekey, mctx,
1087
				    ISC_FALSE, &symtab);
1088
	if (tresult != ISC_R_SUCCESS)
1089 1090
		return (ISC_R_NOMEMORY);

1091 1092 1093 1094
	if (vconfig != NULL)
		(void)cfg_map_get(vconfig, "zone", &zones);
	else
		(void)cfg_map_get(config, "zone", &zones);
1095

Brian Wellington's avatar
Brian Wellington committed
1096 1097 1098 1099
	for (element = cfg_list_first(zones);
	     element != NULL;
	     element = cfg_list_next(element))
	{
1100
		isc_result_t tresult;
Brian Wellington's avatar
Brian Wellington committed
1101 1102
		cfg_obj_t *zone = cfg_listelt_value(element);

1103 1104
		tresult = check_zoneconf(zone, config, symtab, vclass,
					 logctx, mctx);
1105
		if (tresult != ISC_R_SUCCESS)
Brian Wellington's avatar
Brian Wellington committed
1106 1107 1108
			result = ISC_R_FAILURE;
	}

1109 1110 1111 1112 1113 1114
	isc_symtab_destroy(&symtab);

	/*
	 * Check that all key statements are syntactically correct and
	 * there are no duplicate keys.
	 */
1115 1116
	tresult = isc_symtab_create(mctx, 100, NULL, NULL, ISC_TRUE, &symtab);
	if (tresult != ISC_R_SUCCESS)
1117 1118
		return (ISC_R_NOMEMORY);

1119
	(void)cfg_map_get(config, "key", &keys);
1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132
	tresult = check_keylist(keys, symtab, logctx);
	if (tresult == ISC_R_EXISTS)
		result = ISC_R_FAILURE;
	else if (tresult != ISC_R_SUCCESS) {
		isc_symtab_destroy(&symtab);
		return (tresult);
	}
	
	if (vconfig != NULL) {
		keys = NULL;
		(void)cfg_map_get(vconfig, "key", &keys);
		tresult = check_keylist(keys, symtab, logctx);
		if (tresult == ISC_R_EXISTS)
1133
			result = ISC_R_FAILURE;
1134
		else if (tresult != ISC_R_SUCCESS) {
1135 1136
			isc_symtab_destroy(&symtab);
			return (tresult);
Brian Wellington's avatar
Brian Wellington committed
1137 1138 1139
		}
	}

1140 1141
	isc_symtab_destroy(&symtab);

1142 1143 1144
	/*
	 * Check that forwarding is reasonable.
	 */
1145
	if (vconfig == NULL) {
1146
		cfg_obj_t *options = NULL;
1147
		(void)cfg_map_get(config, "options", &options);
1148 1149 1150 1151 1152 1153 1154
		if (options != NULL)
			if (check_forward(options, logctx) != ISC_R_SUCCESS)
				result = ISC_R_FAILURE;
	} else {
		if (check_forward(vconfig, logctx) != ISC_R_SUCCESS)
			result = ISC_R_FAILURE;
	}
1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167
	/*
	 * Check that dual-stack-servers is reasonable.
	 */
	if (vconfig == NULL) {
		cfg_obj_t *options = NULL;
		(void)cfg_map_get(config, "options", &options);
		if (options != NULL)
			if (check_dual_stack(options, logctx) != ISC_R_SUCCESS)
				result = ISC_R_FAILURE;
	} else {
		if (check_dual_stack(vconfig, logctx) != ISC_R_SUCCESS)
			result = ISC_R_FAILURE;
	}
1168

Mark Andrews's avatar
Mark Andrews committed
1169 1170 1171 1172 1173 1174 1175
	/*
	 * Check that rrset-order is reasonable.
	 */
	if (vconfig != NULL) {
		if (check_order(vconfig, logctx) != ISC_R_SUCCESS)
			result = ISC_R_FAILURE;
	}
1176 1177 1178 1179 1180 1181 1182 1183

	if (vconfig != NULL) {
		(void)cfg_map_get(vconfig, "server", &servers);
		if (servers != NULL &&
		    check_servers(servers, logctx) != ISC_R_SUCCESS)
			result = ISC_R_FAILURE;
	}

1184
	if (vconfig != NULL)
1185
		tresult = check_options(vconfig, logctx, mctx);
1186
	else
1187
		tresult = check_options(config, logctx, mctx);
1188 1189 1190
	if (tresult != ISC_R_SUCCESS)
		result = tresult;

Brian Wellington's avatar
Brian Wellington committed
1191 1192 1193
	return (result);
}

1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307
static const char *
default_channels[] = {
	"default_syslog",
	"default_stderr",
	"default_debug",
	"null",
	NULL
};

static isc_result_t
bind9_check_logging(cfg_obj_t *config, isc_log_t *logctx, isc_mem_t *mctx) {
	cfg_obj_t *categories = NULL;
	cfg_obj_t *category;
	cfg_obj_t *channels = NULL;
	cfg_obj_t *channel;
	cfg_listelt_t *element;
	cfg_listelt_t *delement;
	const char *channelname;
	const char *catname;
	cfg_obj_t *fileobj = NULL;
        cfg_obj_t *syslogobj = NULL;
        cfg_obj_t *nullobj = NULL;
        cfg_obj_t *stderrobj = NULL;
        cfg_obj_t *logobj = NULL;
	isc_result_t result = ISC_R_SUCCESS;
	isc_result_t tresult;
	isc_symtab_t *symtab = NULL;
	isc_symvalue_t symvalue;
	int i;

	(void)cfg_map_get(config, "logging", &logobj);
	if (logobj == NULL)
		return (ISC_R_SUCCESS);

	result = isc_symtab_create(mctx, 100, NULL, NULL, ISC_FALSE, &symtab);
	if (result != ISC_R_SUCCESS)
		return (result);

	symvalue.as_pointer = NULL;
	for (i = 0; default_channels[i] != NULL; i++) {
		tresult = isc_symtab_define(symtab, default_channels[i], 1,
					    symvalue, isc_symexists_replace);
		if (tresult != ISC_R_SUCCESS)
			result = tresult;
	}

	cfg_map_get(logobj, "channel", &channels);

	for (element = cfg_list_first(channels);
	     element != NULL;
	     element = cfg_list_next(element))
	{
		channel = cfg_listelt_value(element);
		channelname = cfg_obj_asstring(cfg_map_getname(channel));
		fileobj = syslogobj = nullobj = stderrobj = NULL;
		(void)cfg_map_get(channel, "file", &fileobj);
		(void)cfg_map_get(channel, "syslog", &syslogobj);
		(void)cfg_map_get(channel, "null", &nullobj);
		(void)cfg_map_get(channel, "stderr", &stderrobj);
		i = 0;
		if (fileobj != NULL)
			i++;
		if (syslogobj != NULL)
			i++;
		if (nullobj != NULL)
			i++;
		if (stderrobj != NULL)
			i++;
		if (i != 1) {
			cfg_obj_log(channel, logctx, ISC_LOG_ERROR,
				    "channel '%s': exactly one of file, syslog, "
				    "null, and stderr must be present",
				     channelname);
			result = ISC_R_FAILURE;
		}
		tresult = isc_symtab_define(symtab, channelname, 1,
					    symvalue, isc_symexists_replace);
		if (tresult != ISC_R_SUCCESS)
			result = tresult;
	}

	cfg_map_get(logobj, "category", &categories);

	for (element = cfg_list_first(categories);
             element != NULL;
             element = cfg_list_next(element))
        {
		category = cfg_listelt_value(element);
		catname = cfg_obj_asstring(cfg_tuple_get(category, "name"));
		if (isc_log_categorybyname(logctx, catname) == NULL) {
			cfg_obj_log(category, logctx, ISC_LOG_ERROR,
				    "undefined category: '%s'", catname);
			result = ISC_R_FAILURE;
		}
		channels = cfg_tuple_get(category, "destinations");
		for (delement = cfg_list_first(channels);
		     delement != NULL;
		     delement = cfg_list_next(delement))
		{
			channel = cfg_listelt_value(delement);
			channelname = cfg_obj_asstring(channel);
			tresult = isc_symtab_lookup(symtab, channelname, 1,
                                          	    &symvalue);
			if (tresult != ISC_R_SUCCESS) {
				cfg_obj_log(channel, logctx, ISC_LOG_ERROR,
					    "undefined channel: '%s'",
					    channelname);
				result = tresult;
			}
		}
	}
	isc_symtab_destroy(&symtab);
	return (result);
}
Brian Wellington's avatar
Brian Wellington committed
1308

1309
isc_result_t
1310
bind9_check_namedconf(cfg_obj_t *config, isc_log_t *logctx, isc_mem_t *mctx) {
1311
	cfg_obj_t *options = NULL;
1312
	cfg_obj_t *servers = NULL;
1313
	cfg_obj_t *views = NULL;
1314
	cfg_obj_t *acls = NULL;
1315
	cfg_obj_t *kals = NULL;
1316 1317
	cfg_obj_t *obj;
	cfg_listelt_t *velement;
Brian Wellington's avatar
Brian Wellington committed
1318
	isc_result_t result = ISC_R_SUCCESS;
1319
	isc_result_t tresult;
1320
	isc_symtab_t *symtab = NULL;
1321

1322
	static const char *builtin[] = { "localhost", "localnets",
1323
					 "any", "none"};
1324

1325 1326
	(void)cfg_map_get(config, "options", &options);

1327
	if (options != NULL &&
1328
	    check_options(options