summaryrefslogtreecommitdiff
path: root/source3/nsswitch/winbindd_rpc.c
blob: 5af42ee041bb1b5b3d8e3b37aaa5ac306f25417f (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
/* 
   Unix SMB/CIFS implementation.

   Winbind rpc backend functions

   Copyright (C) Tim Potter 2000-2001
   Copyright (C) Andrew Tridgell 2001
   
   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 "winbindd.h"

/* Query display info for a domain.  This returns enough information plus a
   bit extra to give an overview of domain users for the User Manager
   application. */
static NTSTATUS query_user_list(struct winbindd_domain *domain,
			       TALLOC_CTX *mem_ctx,
			       uint32 *num_entries, 
			       WINBIND_USERINFO **info)
{
	CLI_POLICY_HND *hnd;
	NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
	POLICY_HND dom_pol;
	BOOL got_dom_pol = False;
	uint32 des_access = SEC_RIGHTS_MAXIMUM_ALLOWED;
	int i;

	*num_entries = 0;
	*info = NULL;

	/* Get sam handle */

	if (!(hnd = cm_get_sam_handle(domain->name)))
		goto done;

	/* Get domain handle */

	result = cli_samr_open_domain(hnd->cli, mem_ctx, &hnd->pol,
					des_access, &domain->sid, &dom_pol);

	if (!NT_STATUS_IS_OK(result))
		goto done;

	got_dom_pol = True;

	i = 0;
	do {
		SAM_DISPINFO_CTR ctr;
		SAM_DISPINFO_1 info1;
		uint32 count = 0, start=i;
		int j;
		TALLOC_CTX *ctx2;

		ctr.sam.info1 = &info1;

		ctx2 = talloc_init_named("winbindd dispinfo");
		if (!ctx2) {
			result = NT_STATUS_NO_MEMORY;
			goto done;
		}
		
		/* Query display info level 1 */
		result = cli_samr_query_dispinfo(hnd->cli, ctx2,
						 &dom_pol, &start, 1,
						 &count, 0xFFFF, &ctr);

		if (!NT_STATUS_IS_OK(result) && 
		    !NT_STATUS_EQUAL(result, STATUS_MORE_ENTRIES)) break;

		(*num_entries) += count;

		/* now map the result into the WINBIND_USERINFO structure */
		(*info) = talloc_realloc(mem_ctx, *info,
					 (*num_entries)*sizeof(WINBIND_USERINFO));
		if (!(*info)) {
			result = NT_STATUS_NO_MEMORY;
			talloc_destroy(ctx2);
			goto done;
		}

		for (j=0;j<count;i++, j++) {
			(*info)[i].acct_name = unistr2_tdup(mem_ctx, &info1.str[j].uni_acct_name);
			(*info)[i].full_name = unistr2_tdup(mem_ctx, &info1.str[j].uni_full_name);
			(*info)[i].user_rid = info1.sam[j].rid_user;
			/* For the moment we set the primary group for
			   every user to be the Domain Users group.
			   There are serious problems with determining
			   the actual primary group for large domains.
			   This should really be made into a 'winbind
			   force group' smb.conf parameter or
			   something like that. */
			(*info)[i].group_rid = DOMAIN_GROUP_RID_USERS;
		}

		talloc_destroy(ctx2);
	} while (NT_STATUS_EQUAL(result, STATUS_MORE_ENTRIES));

 done:

	if (got_dom_pol)
		cli_samr_close(hnd->cli, mem_ctx, &dom_pol);

	return result;
}

/* list all domain groups */
static NTSTATUS enum_dom_groups(struct winbindd_domain *domain,
				TALLOC_CTX *mem_ctx,
				uint32 *num_entries, 
				struct acct_info **info)
{
	uint32 des_access = SEC_RIGHTS_MAXIMUM_ALLOWED;
	CLI_POLICY_HND *hnd;
	POLICY_HND dom_pol;
	NTSTATUS status;

	*num_entries = 0;
	*info = NULL;

	if (!(hnd = cm_get_sam_handle(domain->name))) {
		return NT_STATUS_UNSUCCESSFUL;
	}

	status = cli_samr_open_domain(hnd->cli, mem_ctx,
				      &hnd->pol, des_access, &domain->sid, &dom_pol);
	if (!NT_STATUS_IS_OK(status)) {
		return status;
	}

	do {
		struct acct_info *info2 = NULL;
		uint32 count = 0, start = *num_entries;
		TALLOC_CTX *mem_ctx2;

		mem_ctx2 = talloc_init_named("enum_dom_groups[rpc]");

		status = cli_samr_enum_dom_groups(hnd->cli, mem_ctx2, &dom_pol,
						  &start,
						  0xFFFF, /* buffer size? */
						  &info2, &count);

		if (!NT_STATUS_IS_OK(status) && 
		    !NT_STATUS_EQUAL(status, STATUS_MORE_ENTRIES)) {
			talloc_destroy(mem_ctx2);
			break;
		}

		(*info) = talloc_realloc(mem_ctx, *info, 
					 sizeof(**info) * ((*num_entries) + count));
		if (! *info) {
			talloc_destroy(mem_ctx2);
			cli_samr_close(hnd->cli, mem_ctx, &dom_pol);
			return NT_STATUS_NO_MEMORY;
		}

		memcpy(&(*info)[*num_entries], info2, count*sizeof(*info2));
		(*num_entries) += count;
		talloc_destroy(mem_ctx2);
	} while (NT_STATUS_EQUAL(status, STATUS_MORE_ENTRIES));

	cli_samr_close(hnd->cli, mem_ctx, &dom_pol);

	return status;
}

/* convert a single name to a sid in a domain */
static NTSTATUS name_to_sid(struct winbindd_domain *domain,
			    const char *name,
			    DOM_SID *sid,
			    enum SID_NAME_USE *type)
{
	TALLOC_CTX *mem_ctx;
	CLI_POLICY_HND *hnd;
	NTSTATUS status;
	DOM_SID *sids = NULL;
	uint32 *types = NULL;
	int num_sids;
	const char *full_name;

	if (!(mem_ctx = talloc_init_named("name_to_sid[rpc] for [%s]\\[%s]", domain->name, name))) {
		DEBUG(0, ("talloc_init failed!\n"));
		return NT_STATUS_NO_MEMORY;
	}
        
	if (!(hnd = cm_get_lsa_handle(domain->name))) {
		talloc_destroy(mem_ctx);
		return NT_STATUS_UNSUCCESSFUL;
	}
        
	full_name = talloc_asprintf(mem_ctx, "%s\\%s", domain->name, name);
	
	if (!full_name) {
		DEBUG(0, ("talloc_asprintf failed!\n"));
		talloc_destroy(mem_ctx);
		return NT_STATUS_NO_MEMORY;
	}

	status = cli_lsa_lookup_names(hnd->cli, mem_ctx, &hnd->pol, 1, 
				      &full_name, &sids, &types, &num_sids);
        
	/* Return rid and type if lookup successful */        
	if (NT_STATUS_IS_OK(status)) {
		sid_copy(sid, &sids[0]);
		*type = types[0];
	}

	talloc_destroy(mem_ctx);
	return status;
}

/*
  convert a domain SID to a user or group name
*/
static NTSTATUS sid_to_name(struct winbindd_domain *domain,
			    TALLOC_CTX *mem_ctx,
			    DOM_SID *sid,
			    char **name,
			    enum SID_NAME_USE *type)
{
	CLI_POLICY_HND *hnd;
	char **domains;
	char **names;
	uint32 *types;
	int num_names;
	NTSTATUS status;

	if (!(hnd = cm_get_lsa_handle(domain->name)))
		return NT_STATUS_UNSUCCESSFUL;
        
	status = cli_lsa_lookup_sids(hnd->cli, mem_ctx, &hnd->pol,
				     1, sid, &domains, &names, &types, 
				     &num_names);

	if (NT_STATUS_IS_OK(status)) {
		*type = types[0];
		*name = names[0];
		DEBUG(5,("Mapped sid to [%s]\\[%s]\n", domains[0], *name));

		/* Paranoia */
		if (strcasecmp(domain->name, domains[0]) != 0) {
			DEBUG(1, ("domain name from domain param and PDC lookup return differ! (%s vs %s)\n", domain->name, domains[0]));
			return NT_STATUS_UNSUCCESSFUL;
		}
	}
	return status;
}

/* Lookup user information from a rid or username. */
static NTSTATUS query_user(struct winbindd_domain *domain, 
			   TALLOC_CTX *mem_ctx, 
			   uint32 user_rid, 
			   WINBIND_USERINFO *user_info)
{
	CLI_POLICY_HND *hnd;
	NTSTATUS result;
	POLICY_HND dom_pol, user_pol;
	BOOL got_dom_pol = False, got_user_pol = False;
	SAM_USERINFO_CTR *ctr;

	/* Get sam handle */
	if (!(hnd = cm_get_sam_handle(domain->name)))
		goto done;

	/* Get domain handle */

	result = cli_samr_open_domain(hnd->cli, mem_ctx, &hnd->pol,
				      SEC_RIGHTS_MAXIMUM_ALLOWED, 
				      &domain->sid, &dom_pol);

	if (!NT_STATUS_IS_OK(result))
		goto done;

	got_dom_pol = True;

	/* Get user handle */
	result = cli_samr_open_user(hnd->cli, mem_ctx, &dom_pol,
				    SEC_RIGHTS_MAXIMUM_ALLOWED, user_rid, &user_pol);

	if (!NT_STATUS_IS_OK(result))
		goto done;

	got_user_pol = True;

	/* Get user info */
	result = cli_samr_query_userinfo(hnd->cli, mem_ctx, &user_pol, 
					 0x15, &ctr);

	cli_samr_close(hnd->cli, mem_ctx, &user_pol);
	got_user_pol = False;

	user_info->group_rid = ctr->info.id21->group_rid;
	user_info->acct_name = unistr2_tdup(mem_ctx, 
					    &ctr->info.id21->uni_user_name);
	user_info->full_name = unistr2_tdup(mem_ctx, 
					    &ctr->info.id21->uni_full_name);

 done:
	/* Clean up policy handles */
	if (got_user_pol)
		cli_samr_close(hnd->cli, mem_ctx, &user_pol);

	if (got_dom_pol)
		cli_samr_close(hnd->cli, mem_ctx, &dom_pol);

	return result;
}                                   

/* Lookup groups a user is a member of.  I wish Unix had a call like this! */
static NTSTATUS lookup_usergroups(struct winbindd_domain *domain,
				  TALLOC_CTX *mem_ctx,
				  uint32 user_rid, 
				  uint32 *num_groups, uint32 **user_gids)
{
	CLI_POLICY_HND *hnd;
	NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
	POLICY_HND dom_pol, user_pol;
	uint32 des_access = SEC_RIGHTS_MAXIMUM_ALLOWED;
	BOOL got_dom_pol = False, got_user_pol = False;
	DOM_GID *user_groups;
	int i;

	*num_groups = 0;

	/* First try cached universal groups from logon */
	*user_gids = uni_group_cache_fetch(&domain->sid, user_rid, mem_ctx, num_groups);
	if((*num_groups > 0) && *user_gids) {
		return NT_STATUS_OK;
	} else {
	    *user_gids = NULL;
	    *num_groups = 0;
	}

	/* Get sam handle */
	if (!(hnd = cm_get_sam_handle(domain->name)))
		goto done;

	/* Get domain handle */
	result = cli_samr_open_domain(hnd->cli, mem_ctx, &hnd->pol,
					des_access, &domain->sid, &dom_pol);

	if (!NT_STATUS_IS_OK(result))
		goto done;

	got_dom_pol = True;

	/* Get user handle */
	result = cli_samr_open_user(hnd->cli, mem_ctx, &dom_pol,
					des_access, user_rid, &user_pol);

	if (!NT_STATUS_IS_OK(result))
		goto done;

	got_user_pol = True;

	/* Query user rids */
	result = cli_samr_query_usergroups(hnd->cli, mem_ctx, &user_pol, 
					   num_groups, &user_groups);

	if (!NT_STATUS_IS_OK(result) || (*num_groups) == 0)
		goto done;

	(*user_gids) = talloc(mem_ctx, sizeof(uint32) * (*num_groups));
	for (i=0;i<(*num_groups);i++) {
		(*user_gids)[i] = user_groups[i].g_rid;
	}
	
 done:
	/* Clean up policy handles */
	if (got_user_pol)
		cli_samr_close(hnd->cli, mem_ctx, &user_pol);

	if (got_dom_pol)
		cli_samr_close(hnd->cli, mem_ctx, &dom_pol);

	return result;
}


/* Lookup group membership given a rid.   */
static NTSTATUS lookup_groupmem(struct winbindd_domain *domain,
				TALLOC_CTX *mem_ctx,
				uint32 group_rid, uint32 *num_names, 
				uint32 **rid_mem, char ***names, 
				uint32 **name_types)
{
        CLI_POLICY_HND *hnd;
        NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
        uint32 i, total_names = 0;
        POLICY_HND dom_pol, group_pol;
        uint32 des_access = SEC_RIGHTS_MAXIMUM_ALLOWED;
        BOOL got_dom_pol = False, got_group_pol = False;

	*num_names = 0;

        /* Get sam handle */

        if (!(hnd = cm_get_sam_handle(domain->name)))
                goto done;

        /* Get domain handle */

        result = cli_samr_open_domain(hnd->cli, mem_ctx, &hnd->pol,
                                      des_access, &domain->sid, &dom_pol);

        if (!NT_STATUS_IS_OK(result))
                goto done;

        got_dom_pol = True;

        /* Get group handle */

        result = cli_samr_open_group(hnd->cli, mem_ctx, &dom_pol,
                                     des_access, group_rid, &group_pol);

        if (!NT_STATUS_IS_OK(result))
                goto done;

        got_group_pol = True;

        /* Step #1: Get a list of user rids that are the members of the
           group. */

        result = cli_samr_query_groupmem(hnd->cli, mem_ctx,
                                         &group_pol, num_names, rid_mem,
                                         name_types);

        if (!NT_STATUS_IS_OK(result))
                goto done;

        /* Step #2: Convert list of rids into list of usernames.  Do this
           in bunches of ~1000 to avoid crashing NT4.  It looks like there
           is a buffer overflow or something like that lurking around
           somewhere. */

#define MAX_LOOKUP_RIDS 900

        *names = talloc_zero(mem_ctx, *num_names * sizeof(char *));
        *name_types = talloc_zero(mem_ctx, *num_names * sizeof(uint32));

        for (i = 0; i < *num_names; i += MAX_LOOKUP_RIDS) {
                int num_lookup_rids = MIN(*num_names - i, MAX_LOOKUP_RIDS);
                uint32 tmp_num_names = 0;
                char **tmp_names = NULL;
                uint32 *tmp_types = NULL;

                /* Lookup a chunk of rids */

                result = cli_samr_lookup_rids(hnd->cli, mem_ctx,
                                              &dom_pol, 1000, /* flags */
                                              num_lookup_rids,
                                              &(*rid_mem)[i],
                                              &tmp_num_names,
                                              &tmp_names, &tmp_types);

                if (!NT_STATUS_IS_OK(result))
                        goto done;

                /* Copy result into array.  The talloc system will take
                   care of freeing the temporary arrays later on. */

                memcpy(&(*names)[i], tmp_names, sizeof(char *) * 
                       tmp_num_names);

                memcpy(&(*name_types)[i], tmp_types, sizeof(uint32) *
                       tmp_num_names);

                total_names += tmp_num_names;
        }

        *num_names = total_names;

 done:
        if (got_group_pol)
                cli_samr_close(hnd->cli, mem_ctx, &group_pol);

        if (got_dom_pol)
                cli_samr_close(hnd->cli, mem_ctx, &dom_pol);

        return result;
}

/* find the sequence number for a domain */
static NTSTATUS sequence_number(struct winbindd_domain *domain, uint32 *seq)
{
	TALLOC_CTX *mem_ctx;
	CLI_POLICY_HND *hnd;
	SAM_UNK_CTR ctr;
	uint16 switch_value = 2;
	NTSTATUS result;
	uint32 seqnum = DOM_SEQUENCE_NONE;
	POLICY_HND dom_pol;
	BOOL got_dom_pol = False;
	uint32 des_access = SEC_RIGHTS_MAXIMUM_ALLOWED;

	*seq = DOM_SEQUENCE_NONE;

	if (!(mem_ctx = talloc_init_named("sequence_number[rpc]")))
		return NT_STATUS_NO_MEMORY;

	/* Get sam handle */

	if (!(hnd = cm_get_sam_handle(domain->name)))
		goto done;

	/* Get domain handle */

	result = cli_samr_open_domain(hnd->cli, mem_ctx, &hnd->pol, 
				      des_access, &domain->sid, &dom_pol);

	if (!NT_STATUS_IS_OK(result))
		goto done;

	got_dom_pol = True;

	/* Query domain info */

	result = cli_samr_query_dom_info(hnd->cli, mem_ctx, &dom_pol,
					 switch_value, &ctr);

	if (NT_STATUS_IS_OK(result)) {
		seqnum = ctr.info.inf2.seq_num;
		DEBUG(10,("domain_sequence_number: for domain %s is %u\n", domain->name, (unsigned)seqnum ));
	} else {
		DEBUG(10,("domain_sequence_number: failed to get sequence number (%u) for domain %s\n",
			(unsigned)seqnum, domain->name ));
	}

  done:

	if (got_dom_pol)
		cli_samr_close(hnd->cli, mem_ctx, &dom_pol);

	talloc_destroy(mem_ctx);

	*seq = seqnum;

	return result;
}

/* get a list of trusted domains */
static NTSTATUS trusted_domains(struct winbindd_domain *domain,
				TALLOC_CTX *mem_ctx,
				uint32 *num_domains,
				char ***names,
				DOM_SID **dom_sids)
{
	CLI_POLICY_HND *hnd;
	NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
	uint32 enum_ctx = 0;

	*num_domains = 0;

	if (!(hnd = cm_get_lsa_handle(lp_workgroup())))
		goto done;

	result = cli_lsa_enum_trust_dom(hnd->cli, mem_ctx,
					&hnd->pol, &enum_ctx, num_domains, 
					names, dom_sids);
done:
	return result;
}

/* find the domain sid for a domain */
static NTSTATUS domain_sid(struct winbindd_domain *domain, DOM_SID *sid)
{
	NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
	TALLOC_CTX *mem_ctx;
	CLI_POLICY_HND *hnd;
	fstring level5_dom;

	if (!(mem_ctx = talloc_init_named("domain_sid[rpc]")))
		return NT_STATUS_NO_MEMORY;

	/* Get sam handle */
	if (!(hnd = cm_get_lsa_handle(domain->name)))
		goto done;

	status = cli_lsa_query_info_policy(hnd->cli, mem_ctx,
					   &hnd->pol, 0x05, level5_dom, sid);

done:
	talloc_destroy(mem_ctx);
	return status;
}

/* the rpc backend methods are exposed via this structure */
struct winbindd_methods msrpc_methods = {
	False,
	query_user_list,
	enum_dom_groups,
	name_to_sid,
	sid_to_name,
	query_user,
	lookup_usergroups,
	lookup_groupmem,
	sequence_number,
	trusted_domains,
	domain_sid
};