summaryrefslogtreecommitdiff
path: root/source3/winbindd/idmap_adex/gc_util.c
blob: 9b4ce77b000de16aa983a83e7e73091b75ac12a9 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
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
120
121
122
123
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
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
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
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
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
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
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
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
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
527
528
529
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
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
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
679
680
681
682
683
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
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
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
/*
 * idmap_adex: Global Catalog search interface
 *
 * Copyright (C) Gerald (Jerry) Carter 2007-2008
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#include "includes.h"
#include "idmap_adex.h"
#include "libads/cldap.h"

#undef DBGC_CLASS
#define DBGC_CLASS DBGC_IDMAP

static struct gc_info *_gc_server_list = NULL;


/**********************************************************************
 *********************************************************************/

static struct gc_info *gc_list_head(void)
{
	return _gc_server_list;
}

/**********************************************************************
 Checks if either of the domains is a subdomain of the other
 *********************************************************************/

static bool is_subdomain(const char* a, const char *b)
{
	char *s;
	TALLOC_CTX *frame = talloc_stackframe();
	char *x, *y;
	bool ret = false;

	/* Trivial cases */

	if (!a && !b)
		return true;

	if (!a || !b)
		return false;

	/* Normalize the case */

	x = talloc_strdup(frame, a);
	y = talloc_strdup(frame, b);
	if (!x || !y) {
		ret = false;
		goto done;
	}

	strupper_m(x);
	strupper_m(y);

	/* Exact match */

	if (strcmp(x, y) == 0) {
		ret = true;
		goto done;
	}

	/* Check for trailing substrings */

	s = strstr_m(x, y);
	if (s && (strlen(s) == strlen(y))) {
		ret = true;
		goto done;
	}

	s = strstr_m(y, x);
	if (s && (strlen(s) == strlen(x))) {
		ret = true;
		goto done;
	}

done:
	talloc_destroy(frame);

	return ret;
}

/**********************************************************************
 *********************************************************************/

 NTSTATUS gc_find_forest_root(struct gc_info *gc, const char *domain)
{
	ADS_STRUCT *ads = NULL;
	ADS_STATUS ads_status;
	NTSTATUS nt_status = NT_STATUS_UNSUCCESSFUL;
	struct NETLOGON_SAM_LOGON_RESPONSE_EX cldap_reply;
	TALLOC_CTX *frame = talloc_stackframe();

	if (!gc || !domain) {
		return NT_STATUS_INVALID_PARAMETER;
	}

	ZERO_STRUCT(cldap_reply);

	ads = ads_init(domain, NULL, NULL);
	BAIL_ON_PTR_ERROR(ads, nt_status);

	ads->auth.flags = ADS_AUTH_NO_BIND;
	ads_status = ads_connect(ads);
	if (!ADS_ERR_OK(ads_status)) {
		DEBUG(4, ("find_forest_root: ads_connect(%s) failed! (%s)\n",
			  domain, ads_errstr(ads_status)));
	}
	nt_status = ads_ntstatus(ads_status);
	BAIL_ON_NTSTATUS_ERROR(nt_status);

	if (!ads_cldap_netlogon_5(frame,
				  ads->config.ldap_server_name,
				  ads->config.realm,
				  &cldap_reply))
	{
		DEBUG(4,("find_forest_root: Failed to get a CLDAP reply from %s!\n",
			 ads->server.ldap_server));
		nt_status = NT_STATUS_IO_TIMEOUT;
		BAIL_ON_NTSTATUS_ERROR(nt_status);
	}

	gc->forest_name = talloc_strdup(gc, cldap_reply.forest);
	BAIL_ON_PTR_ERROR(gc->forest_name, nt_status);

done:
	if (ads) {
		ads_destroy(&ads);
	}

	return nt_status;
}

/**********************************************************************
 *********************************************************************/

static NTSTATUS gc_add_forest(const char *domain)
{
	NTSTATUS nt_status = NT_STATUS_UNSUCCESSFUL;
	struct gc_info *gc = NULL;
	struct gc_info *find_gc = NULL;
	char *dn;
	ADS_STRUCT *ads = NULL;
	struct likewise_cell *primary_cell = NULL;

	primary_cell = cell_list_head();
	if (!primary_cell) {
		nt_status = NT_STATUS_INVALID_SERVER_STATE;
		BAIL_ON_NTSTATUS_ERROR(nt_status);
	}

	/* Check for duplicates based on domain name first as this
           requires no connection */

	find_gc = gc_list_head();
	while (find_gc) {
		if (strequal (find_gc->forest_name, domain))
			break;
		find_gc = find_gc->next;
	}

	if (find_gc) {
		DEBUG(10,("gc_add_forest: %s already in list\n", find_gc->forest_name));
		return NT_STATUS_OK;
	}

	if ((gc = TALLOC_ZERO_P(NULL, struct gc_info)) == NULL) {
		nt_status = NT_STATUS_NO_MEMORY;
		BAIL_ON_NTSTATUS_ERROR(nt_status);
	}

	/* Query the rootDSE for the forest root naming conect first.
           Check that the a GC server for the forest has not already
	   been added */

	nt_status = gc_find_forest_root(gc, domain);
	BAIL_ON_NTSTATUS_ERROR(nt_status);

	find_gc = gc_list_head();
	while (find_gc) {
		if (strequal (find_gc->forest_name, gc->forest_name))
			break;
		find_gc = find_gc->next;
	}

	if (find_gc) {
		DEBUG(10,("gc_add_forest: Forest %s already in list\n",
			  find_gc->forest_name));
		return NT_STATUS_OK;
	}

	/* Not found, so add it here.  Make sure we connect to
	   a DC in _this_ domain and not the forest root. */

	dn = ads_build_dn(gc->forest_name);
	BAIL_ON_PTR_ERROR(dn, nt_status);

	gc->search_base = talloc_strdup(gc, dn);
	SAFE_FREE(dn);
	BAIL_ON_PTR_ERROR(gc->search_base, nt_status);

#if 0
	/* Can't use cell_connect_dn() here as there is no way to
	   specifiy the LWCELL_FLAG_GC_CELL flag setting for cell_connect() */

	nt_status = cell_connect_dn(&gc->forest_cell, gc->search_base);
	BAIL_ON_NTSTATUS_ERROR(nt_status);
#else

	gc->forest_cell = cell_new();
	BAIL_ON_PTR_ERROR(gc->forest_cell, nt_status);

	/* Set the DNS domain, dn, etc ... and add it to the list */

	cell_set_dns_domain(gc->forest_cell, gc->forest_name);
	cell_set_dn(gc->forest_cell, gc->search_base);
	cell_set_flags(gc->forest_cell, LWCELL_FLAG_GC_CELL);
#endif

	/* It is possible to belong to a non-forest cell and a
	   non-provisioned forest (at our domain levele). In that
	   case, we should just inherit the flags from our primary
	   cell since the GC searches will match our own schema
	   model. */

	if (strequal(primary_cell->forest_name, gc->forest_name)
	    || is_subdomain(primary_cell->dns_domain, gc->forest_name))
	{
		cell_set_flags(gc->forest_cell, cell_flags(primary_cell));
	} else {
		/* outside of our domain */

		nt_status = cell_connect(gc->forest_cell);
		BAIL_ON_NTSTATUS_ERROR(nt_status);

		nt_status = cell_lookup_settings(gc->forest_cell);
		BAIL_ON_NTSTATUS_ERROR(nt_status);

		/* Drop the connection now that we have the settings */

		ads = cell_connection(gc->forest_cell);
		ads_destroy(&ads);
		cell_set_connection(gc->forest_cell, NULL);
	}

	DLIST_ADD_END(_gc_server_list, gc, struct gc_info*);

	DEBUG(10,("gc_add_forest: Added %s to Global Catalog list of servers\n",
		  gc->forest_name));

	nt_status = NT_STATUS_OK;

done:
	if (!NT_STATUS_IS_OK(nt_status)) {
		talloc_destroy(gc);
		DEBUG(3,("LWI: Failed to add new GC connection for %s (%s)\n",
			 domain, nt_errstr(nt_status)));
	}

	return nt_status;
}

/**********************************************************************
 *********************************************************************/

static void gc_server_list_destroy(void)
{
	struct gc_info *gc = gc_list_head();

	while (gc) {
		struct gc_info *p = gc->next;

		cell_destroy(gc->forest_cell);
		talloc_destroy(gc);

		gc = p;
	}

	_gc_server_list = NULL;

	return;
}

/**********************************************************************
 Setup the initial list of forests and initial the forest cell
 settings for each.  FIXME!!!
 *********************************************************************/

 NTSTATUS gc_init_list(void)
{
	NTSTATUS nt_status = NT_STATUS_UNSUCCESSFUL;
	struct winbindd_tdc_domain *domains = NULL;
	size_t num_domains = 0;
	int i;

	if (_gc_server_list != NULL) {
		gc_server_list_destroy();
	}

	if (!wcache_tdc_fetch_list(&domains, &num_domains)) {
		nt_status = NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
		BAIL_ON_NTSTATUS_ERROR(nt_status);
	}

	/* Find our forest first.  Have to try all domains here starting
	   with our own.  gc_add_forest() filters duplicates */

	nt_status = gc_add_forest(lp_realm());
	WARN_ON_NTSTATUS_ERROR(nt_status);

	for (i=0; i<num_domains; i++) {
		uint32_t flags = (NETR_TRUST_FLAG_IN_FOREST);

		/* I think we should be able to break out of loop once
		   we add a GC for our forest and not have to test every one.
		   In fact, this entire loop is probably irrelevant since
		   the GC location code should always find a GC given lp_realm().
		   Will have to spend time testing before making the change.
		   --jerry */

		if ((domains[i].trust_flags & flags) == flags) {
			nt_status = gc_add_forest(domains[i].dns_name);
			WARN_ON_NTSTATUS_ERROR(nt_status);
			/* Don't BAIL here since not every domain may
			   have a GC server */
		}
	}

	/* Now add trusted forests.  gc_add_forest() will filter out
	   duplicates. Check everything with an incoming trust path
	   that is not in our own forest.  */

	for (i=0; i<num_domains; i++) {
		uint32_t flags = domains[i].trust_flags;
		uint32_t attribs = domains[i].trust_attribs;

		/* Skip non_AD domains */

		if (strlen(domains[i].dns_name) == 0) {
			continue;
		}

		/* Only add a GC for a forest outside of our own.
		   Ignore QUARANTINED/EXTERNAL trusts */

		if ((flags & NETR_TRUST_FLAG_INBOUND)
		    && !(flags & NETR_TRUST_FLAG_IN_FOREST)
		    && (attribs & NETR_TRUST_ATTRIBUTE_FOREST_TRANSITIVE))
		{
			nt_status = gc_add_forest(domains[i].dns_name);
			WARN_ON_NTSTATUS_ERROR(nt_status);
		}
	}

	nt_status = NT_STATUS_OK;

done:
	if (!NT_STATUS_IS_OK(nt_status)) {
		DEBUG(2,("LWI: Failed to initialized GC list (%s)\n",
			 nt_errstr(nt_status)));
	}

	TALLOC_FREE(domains);

	return nt_status;
}


/**********************************************************************
 *********************************************************************/

 struct gc_info *gc_search_start(void)
{
	NTSTATUS nt_status = NT_STATUS_OK;
	struct gc_info *gc = gc_list_head();

	if (!gc) {
		nt_status = gc_init_list();
		BAIL_ON_NTSTATUS_ERROR(nt_status);

		gc = gc_list_head();
	}

done:
	if (!NT_STATUS_IS_OK(nt_status)) {
		DEBUG(2,("LWI: Failed to initialize GC list (%s)\n",
			 nt_errstr(nt_status)));
	}

	return gc;
}

/**********************************************************************
 Search Global Catalog.  Always search our own forest.  The flags set
 controls whether or not we search cross forest.  Assume that the
 resulting set is always returned from one GC so that we don't have to
 both combining the LDAPMessage * results
 *********************************************************************/

 NTSTATUS gc_search_forest(struct gc_info *gc,
			   LDAPMessage **msg,
			   const char *filter)
{
	NTSTATUS nt_status = NT_STATUS_UNSUCCESSFUL;
	ADS_STATUS ads_status = ADS_ERROR_NT(NT_STATUS_UNSUCCESSFUL);
	const char *attrs[] = {"*", NULL};
	LDAPMessage *m = NULL;

	if (!gc || !msg || !filter) {
		nt_status = NT_STATUS_INVALID_PARAMETER;
		BAIL_ON_NTSTATUS_ERROR(nt_status);
	}

	/* When you have multiple domain trees in a forest, the
	   GC will search all naming contexts when you send it
	   and empty ("") base search suffix.   Tested against
	   Windows 2003.  */

	ads_status = cell_do_search(gc->forest_cell, "",
				   LDAP_SCOPE_SUBTREE, filter, attrs, &m);
	nt_status = ads_ntstatus(ads_status);
	BAIL_ON_NTSTATUS_ERROR(nt_status);

	*msg = m;

done:
	if (!NT_STATUS_IS_OK(nt_status)) {
		DEBUG(2,("LWI: Forest wide search %s failed (%s)\n",
			 filter, nt_errstr(nt_status)));
	}

	return nt_status;
}

/**********************************************************************
 Search all forests via GC and return the results in an array of
 ADS_STRUCT/LDAPMessage pairs.
 *********************************************************************/

 NTSTATUS gc_search_all_forests(const char *filter,
				ADS_STRUCT ***ads_list,
				LDAPMessage ***msg_list,
				int *num_resp, uint32_t flags)
{
	NTSTATUS nt_status = NT_STATUS_UNSUCCESSFUL;
	struct gc_info *gc = NULL;
	uint32_t test_flags = ADEX_GC_SEARCH_CHECK_UNIQUE;

	*ads_list = NULL;
	*msg_list = NULL;
	*num_resp = 0;

	if ((gc = gc_search_start()) == NULL) {
		nt_status = NT_STATUS_INVALID_DOMAIN_STATE;
		BAIL_ON_NTSTATUS_ERROR(nt_status);
	}

	while (gc) {
		LDAPMessage *m = NULL;

		nt_status = gc_search_forest(gc, &m, filter);
		if (!NT_STATUS_IS_OK(nt_status)) {
			gc = gc->next;
			continue;
		}

		nt_status = add_ads_result_to_array(cell_connection(gc->forest_cell),
						    m, ads_list, msg_list,
						    num_resp);
		BAIL_ON_NTSTATUS_ERROR(nt_status);

		/* If there can only be one match, then we are done */

		if ((*num_resp > 0) && ((flags & test_flags) == test_flags)) {
			break;
		}

		gc = gc->next;
	}

	if (*num_resp == 0) {
		nt_status = NT_STATUS_OBJECT_NAME_NOT_FOUND;
		BAIL_ON_NTSTATUS_ERROR(nt_status);
	}

	nt_status = NT_STATUS_OK;

done:
	return nt_status;
}

/**********************************************************************
 Search all forests via GC and return the results in an array of
 ADS_STRUCT/LDAPMessage pairs.
 *********************************************************************/

 NTSTATUS gc_search_all_forests_unique(const char *filter,
				       ADS_STRUCT **ads,
				       LDAPMessage **msg)
{
	ADS_STRUCT **ads_list = NULL;
	LDAPMessage **msg_list = NULL;
	int num_resp;
	NTSTATUS nt_status = NT_STATUS_UNSUCCESSFUL;

	nt_status = gc_search_all_forests(filter, &ads_list,
					  &msg_list, &num_resp,
					  ADEX_GC_SEARCH_CHECK_UNIQUE);
	BAIL_ON_NTSTATUS_ERROR(nt_status);

	nt_status = check_result_unique(ads_list[0], msg_list[0]);
	BAIL_ON_NTSTATUS_ERROR(nt_status);

	*ads = ads_list[0];
	*msg = msg_list[0];

done:
	/* Be care that we don't free the msg result being returned */

	if (!NT_STATUS_IS_OK(nt_status)) {
		free_result_array(ads_list, msg_list, num_resp);
	} else {
		talloc_destroy(ads_list);
		talloc_destroy(msg_list);
	}

	return nt_status;
}

/*********************************************************************
 ********************************************************************/

 NTSTATUS gc_name_to_sid(const char *domain,
			 const char *name,
			 struct dom_sid *sid,
			 enum lsa_SidType *sid_type)
{
	TALLOC_CTX *frame = talloc_stackframe();
	char *p, *name_user;
	NTSTATUS nt_status = NT_STATUS_UNSUCCESSFUL;
	char *name_filter;
	ADS_STRUCT *ads = NULL;
	LDAPMessage *msg = NULL;
	LDAPMessage *e = NULL;
	char *dn = NULL;
	char *dns_domain = NULL;
	ADS_STRUCT **ads_list = NULL;
	LDAPMessage **msg_list = NULL;
	int num_resp = 0;
	int i;

	/* Strip the "DOMAIN\" prefix if necessary and search for
	   a matching sAMAccountName in the forest */

	if ((p = strchr_m( name, '\\' )) == NULL)
		name_user = talloc_strdup( frame, name );
	else
		name_user = talloc_strdup( frame, p+1 );
	BAIL_ON_PTR_ERROR(name_user, nt_status);

	name_filter = talloc_asprintf(frame, "(sAMAccountName=%s)", name_user);
	BAIL_ON_PTR_ERROR(name_filter, nt_status);

	nt_status = gc_search_all_forests(name_filter, &ads_list,
					  &msg_list, &num_resp, 0);
	BAIL_ON_NTSTATUS_ERROR(nt_status);

	/* Assume failure until we know otherwise*/

	nt_status = NT_STATUS_OBJECT_NAME_NOT_FOUND;

	/* Match the domain name from the DN */

	for (i=0; i<num_resp; i++) {
		ads = ads_list[i];
		msg = msg_list[i];

		e = ads_first_entry(ads, msg);
		while (e) {
			struct winbindd_tdc_domain *domain_rec;

			dn = ads_get_dn(ads, frame, e);
			BAIL_ON_PTR_ERROR(dn, nt_status);

			dns_domain = cell_dn_to_dns(dn);
			TALLOC_FREE(dn);
			BAIL_ON_PTR_ERROR(dns_domain, nt_status);

			domain_rec = wcache_tdc_fetch_domain(frame, dns_domain);
			SAFE_FREE(dns_domain);

			/* Ignore failures and continue the search */

			if (!domain_rec) {
				e = ads_next_entry(ads, e);
				continue;
			}

			/* Check for a match on the domain name */

			if (strequal(domain, domain_rec->domain_name)) {
				if (!ads_pull_sid(ads, e, "objectSid", sid)) {
					nt_status = NT_STATUS_INVALID_SID;
					BAIL_ON_NTSTATUS_ERROR(nt_status);
				}

				talloc_destroy(domain_rec);

				nt_status = get_sid_type(ads, msg, sid_type);
				BAIL_ON_NTSTATUS_ERROR(nt_status);

				/* We're done! */
				nt_status = NT_STATUS_OK;
				break;
			}

			/* once more around thew merry-go-round */

			talloc_destroy(domain_rec);
			e = ads_next_entry(ads, e);
		}
	}

done:
	free_result_array(ads_list, msg_list, num_resp);
	talloc_destroy(frame);

	return nt_status;
}

/********************************************************************
 Pull an attribute string value
 *******************************************************************/

static NTSTATUS get_object_account_name(ADS_STRUCT *ads,
					LDAPMessage *msg,
					char **name)
{
	NTSTATUS nt_status = NT_STATUS_UNSUCCESSFUL;
	char *sam_name = NULL;
	struct winbindd_tdc_domain *domain_rec = NULL;
	char *dns_domain = NULL;
	char *dn = NULL;
	TALLOC_CTX *frame = talloc_stackframe();
	int len;

	/* Check parameters */

	if (!ads || !msg || !name) {
		nt_status = NT_STATUS_INVALID_PARAMETER;
		BAIL_ON_NTSTATUS_ERROR(nt_status);
	}

	/* get the name and domain */

	dn = ads_get_dn(ads, frame, msg);
	BAIL_ON_PTR_ERROR(dn, nt_status);

	DEBUG(10,("get_object_account_name: dn = \"%s\"\n", dn));

	dns_domain = cell_dn_to_dns(dn);
	TALLOC_FREE(dn);
	BAIL_ON_PTR_ERROR(dns_domain, nt_status);

	domain_rec = wcache_tdc_fetch_domain(frame, dns_domain);
	SAFE_FREE(dns_domain);

	if (!domain_rec) {
		nt_status = NT_STATUS_TRUSTED_DOMAIN_FAILURE;
		BAIL_ON_NTSTATUS_ERROR(nt_status);
	}

	sam_name = ads_pull_string(ads, frame, msg, "sAMAccountName");
	BAIL_ON_PTR_ERROR(sam_name, nt_status);

	len = asprintf(name, "%s\\%s", domain_rec->domain_name, sam_name);
	if (len == -1) {
		*name = NULL;
		BAIL_ON_PTR_ERROR((*name), nt_status);
	}

	nt_status = NT_STATUS_OK;

done:
	talloc_destroy(frame);

	return nt_status;
}

/*********************************************************************
 ********************************************************************/

 NTSTATUS gc_sid_to_name(const struct dom_sid *sid,
			 char **name,
			 enum lsa_SidType *sid_type)
{
	TALLOC_CTX *frame = talloc_stackframe();
	NTSTATUS nt_status = NT_STATUS_UNSUCCESSFUL;
	char *filter;
	ADS_STRUCT *ads = NULL;
	LDAPMessage *msg = NULL;
	char *sid_string;

	*name = NULL;

	sid_string = sid_binstring(frame, sid);
	BAIL_ON_PTR_ERROR(sid_string, nt_status);

	filter = talloc_asprintf(frame, "(objectSid=%s)", sid_string);
	TALLOC_FREE(sid_string);
	BAIL_ON_PTR_ERROR(filter, nt_status);

	nt_status = gc_search_all_forests_unique(filter, &ads, &msg);
	BAIL_ON_NTSTATUS_ERROR(nt_status);

	nt_status = get_object_account_name(ads, msg, name);
	BAIL_ON_NTSTATUS_ERROR(nt_status);

	nt_status = get_sid_type(ads, msg, sid_type);
	BAIL_ON_NTSTATUS_ERROR(nt_status);

done:
	ads_msgfree(ads, msg);
	talloc_destroy(frame);

	return nt_status;
}

/**********************************************************************
 *********************************************************************/

 NTSTATUS add_ads_result_to_array(ADS_STRUCT *ads,
				  LDAPMessage *msg,
				  ADS_STRUCT ***ads_list,
				  LDAPMessage ***msg_list,
				  int *size)
{
	NTSTATUS nt_status = NT_STATUS_UNSUCCESSFUL;
	ADS_STRUCT **ads_tmp = NULL;
	LDAPMessage **msg_tmp = NULL;
	int count = *size;

	if (!ads || !msg) {
		nt_status = NT_STATUS_INVALID_PARAMETER;
		BAIL_ON_NTSTATUS_ERROR(nt_status);
	}

#if 0
	/* Don't add a response with no entries */

	if (ads_count_replies(ads, msg) == 0) {
		return NT_STATUS_OK;
	}
#endif

	if (count == 0) {
		ads_tmp = TALLOC_ARRAY(NULL, ADS_STRUCT*, 1);
		BAIL_ON_PTR_ERROR(ads_tmp, nt_status);

		msg_tmp = TALLOC_ARRAY(NULL, LDAPMessage*, 1);
		BAIL_ON_PTR_ERROR(msg_tmp, nt_status);
	} else {
		ads_tmp = TALLOC_REALLOC_ARRAY(*ads_list, *ads_list, ADS_STRUCT*,
					       count+1);
		BAIL_ON_PTR_ERROR(ads_tmp, nt_status);

		msg_tmp = TALLOC_REALLOC_ARRAY(*msg_list, *msg_list, LDAPMessage*,
					       count+1);
		BAIL_ON_PTR_ERROR(msg_tmp, nt_status);
	}

	ads_tmp[count] = ads;
	msg_tmp[count] = msg;
	count++;

	*ads_list = ads_tmp;
	*msg_list = msg_tmp;
	*size = count;

	nt_status = NT_STATUS_OK;

done:
	if (!NT_STATUS_IS_OK(nt_status)) {
		talloc_destroy(ads_tmp);
		talloc_destroy(msg_tmp);
	}

	return nt_status;
}

/**********************************************************************
 Frees search results.  Do not free the ads_list as these are
 references back to the GC search structures.
 *********************************************************************/

 void free_result_array(ADS_STRUCT **ads_list,
			LDAPMessage **msg_list,
			int num_resp)
{
	int i;

	for (i=0; i<num_resp; i++) {
		ads_msgfree(ads_list[i], msg_list[i]);
	}

	talloc_destroy(ads_list);
	talloc_destroy(msg_list);
}

/**********************************************************************
 Check that we have exactly one entry from the search
 *********************************************************************/

 NTSTATUS check_result_unique(ADS_STRUCT *ads, LDAPMessage *msg)
{
	NTSTATUS nt_status;
	int count;

	count = ads_count_replies(ads, msg);

	if (count <= 0) {
		nt_status = NT_STATUS_OBJECT_NAME_NOT_FOUND;
		BAIL_ON_NTSTATUS_ERROR(nt_status);
	}

	if (count > 1) {
		nt_status = NT_STATUS_DUPLICATE_NAME;
		BAIL_ON_NTSTATUS_ERROR(nt_status);
	}

	nt_status = NT_STATUS_OK;

done:
	return nt_status;
}