?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
r23279: Replace occurrence of sid_binstring inside lookup_groupmem
[Samba.git] / source3 / nsswitch / winbindd_ads.c
blobeda3dfb785b028ab3952e6b8b791f9ec4e2c8bdc
1 /*
2 Unix SMB/CIFS implementation.
3
4 Winbind ADS backend functions
5
6 Copyright (C) Andrew Tridgell 2001
7 Copyright (C) Andrew Bartlett <abartlet@samba.org> 2003
8 Copyright (C) Gerald (Jerry) Carter 2004
9
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 2 of the License, or
13 (at your option) any later version.
14
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
19
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to the Free Software
22 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 */
24
25 #include "includes.h"
26 #include "winbindd.h"
27
28 #ifdef HAVE_ADS
29
30 #undef DBGC_CLASS
31 #define DBGC_CLASS DBGC_WINBIND
32
33 extern struct winbindd_methods reconnect_methods;
34
35 /*
36 return our ads connections structure for a domain. We keep the connection
37 open to make things faster
38 */
39 static ADS_STRUCT *ads_cached_connection(struct winbindd_domain *domain)
40 {
41 ADS_STRUCT *ads;
42 ADS_STATUS status;
43 fstring dc_name;
44 struct in_addr dc_ip;
45
46 DEBUG(10,("ads_cached_connection\n"));
47
48 if (domain->private_data) {
49
50 time_t expire;
51 time_t now = time(NULL);
52
53 /* check for a valid structure */
54 ads = (ADS_STRUCT *)domain->private_data;
55
56 expire = MIN(ads->auth.tgt_expire, ads->auth.tgs_expire);
57
58 DEBUG(7, ("Current tickets expire in %d seconds (at %d, time is now %d)\n",
59 (uint32)expire-(uint32)now, (uint32) expire, (uint32) now));
60
61 if ( ads->config.realm && (expire > now)) {
62 return ads;
63 } else {
64 /* we own this ADS_STRUCT so make sure it goes away */
65 DEBUG(7,("Deleting expired krb5 credential cache\n"));
66 ads->is_mine = True;
67 ads_destroy( &ads );
68 ads_kdestroy("MEMORY:winbind_ccache");
69 domain->private_data = NULL;
70 }
71 }
72
73 /* we don't want this to affect the users ccache */
74 setenv("KRB5CCNAME", "MEMORY:winbind_ccache", 1);
75
76 ads = ads_init(domain->alt_name, domain->name, NULL);
77 if (!ads) {
78 DEBUG(1,("ads_init for domain %s failed\n", domain->name));
79 return NULL;
80 }
81
82 /* the machine acct password might have change - fetch it every time */
83
84 SAFE_FREE(ads->auth.password);
85 SAFE_FREE(ads->auth.realm);
86
87 if ( IS_DC ) {
88 DOM_SID sid;
89 time_t last_set_time;
90
91 if ( !pdb_get_trusteddom_pw( domain->name, &ads->auth.password, &sid, &last_set_time ) ) {
92 ads_destroy( &ads );
93 return NULL;
94 }
95 ads->auth.realm = SMB_STRDUP( ads->server.realm );
96 strupper_m( ads->auth.realm );
97 }
98 else {
99 struct winbindd_domain *our_domain = domain;
100
101 ads->auth.password = secrets_fetch_machine_password(lp_workgroup(), NULL, NULL);
102
103 /* always give preference to the alt_name in our
104 primary domain if possible */
105
106 if ( !domain->primary )
107 our_domain = find_our_domain();
108
109 if ( our_domain->alt_name[0] != '\0' ) {
110 ads->auth.realm = SMB_STRDUP( our_domain->alt_name );
111 strupper_m( ads->auth.realm );
112 }
113 else
114 ads->auth.realm = SMB_STRDUP( lp_realm() );
115 }
116
117 ads->auth.renewable = WINBINDD_PAM_AUTH_KRB5_RENEW_TIME;
118
119 /* Setup the server affinity cache. We don't reaally care
120 about the name. Just setup affinity and the KRB5_CONFIG
121 file. */
122
123 get_dc_name( ads->server.workgroup, ads->server.realm, dc_name, &dc_ip );
124
125 status = ads_connect(ads);
126 if (!ADS_ERR_OK(status) || !ads->config.realm) {
127 DEBUG(1,("ads_connect for domain %s failed: %s\n",
128 domain->name, ads_errstr(status)));
129 ads_destroy(&ads);
130
131 /* if we get ECONNREFUSED then it might be a NT4
132 server, fall back to MSRPC */
133 if (status.error_type == ENUM_ADS_ERROR_SYSTEM &&
134 status.err.rc == ECONNREFUSED) {
135 /* 'reconnect_methods' is the MS-RPC backend. */
136 DEBUG(1,("Trying MSRPC methods\n"));
137 domain->backend = &reconnect_methods;
138 }
139 return NULL;
140 }
141
142 /* set the flag that says we don't own the memory even
143 though we do so that ads_destroy() won't destroy the
144 structure we pass back by reference */
145
146 ads->is_mine = False;
147
148 domain->private_data = (void *)ads;
149 return ads;
150 }
151
152
153 /* Query display info for a realm. This is the basic user list fn */
154 static NTSTATUS query_user_list(struct winbindd_domain *domain,
155 TALLOC_CTX *mem_ctx,
156 uint32 *num_entries,
157 WINBIND_USERINFO **info)
158 {
159 ADS_STRUCT *ads = NULL;
160 const char *attrs[] = { "*", NULL };
161 int i, count;
162 ADS_STATUS rc;
163 LDAPMessage *res = NULL;
164 LDAPMessage *msg = NULL;
165 NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
166
167 *num_entries = 0;
168
169 DEBUG(3,("ads: query_user_list\n"));
170
171 if ( !winbindd_can_contact_domain( domain ) ) {
172 DEBUG(10,("query_user_list: No incoming trust for domain %s\n",
173 domain->name));
174 return NT_STATUS_OK;
175 }
176
177 ads = ads_cached_connection(domain);
178
179 if (!ads) {
180 domain->last_status = NT_STATUS_SERVER_DISABLED;
181 goto done;
182 }
183
184 rc = ads_search_retry(ads, &res, "(objectCategory=user)", attrs);
185 if (!ADS_ERR_OK(rc) || !res) {
186 DEBUG(1,("query_user_list ads_search: %s\n", ads_errstr(rc)));
187 goto done;
188 }
189
190 count = ads_count_replies(ads, res);
191 if (count == 0) {
192 DEBUG(1,("query_user_list: No users found\n"));
193 goto done;
194 }
195
196 (*info) = TALLOC_ZERO_ARRAY(mem_ctx, WINBIND_USERINFO, count);
197 if (!*info) {
198 status = NT_STATUS_NO_MEMORY;
199 goto done;
200 }
201
202 i = 0;
203
204 for (msg = ads_first_entry(ads, res); msg; msg = ads_next_entry(ads, msg)) {
205 char *name, *gecos = NULL;
206 char *homedir = NULL;
207 char *shell = NULL;
208 uint32 group;
209 uint32 atype;
210 DOM_SID user_sid;
211 gid_t primary_gid = (gid_t)-1;
212
213 if (!ads_pull_uint32(ads, msg, "sAMAccountType", &atype) ||
214 ads_atype_map(atype) != SID_NAME_USER) {
215 DEBUG(1,("Not a user account? atype=0x%x\n", atype));
216 continue;
217 }
218
219 name = ads_pull_username(ads, mem_ctx, msg);
220
221 if ( ads_pull_sid( ads, msg, "objectSid", &user_sid ) ) {
222 status = nss_get_info_cached( domain, &user_sid, mem_ctx,
223 ads, msg, &homedir, &shell, &gecos,
224 &primary_gid );
225 }
226
227 if (gecos == NULL) {
228 gecos = ads_pull_string(ads, mem_ctx, msg, "name");
229 }
230
231 if (!ads_pull_sid(ads, msg, "objectSid",
232 &(*info)[i].user_sid)) {
233 DEBUG(1,("No sid for %s !?\n", name));
234 continue;
235 }
236 if (!ads_pull_uint32(ads, msg, "primaryGroupID", &group)) {
237 DEBUG(1,("No primary group for %s !?\n", name));
238 continue;
239 }
240
241 (*info)[i].acct_name = name;
242 (*info)[i].full_name = gecos;
243 (*info)[i].homedir = homedir;
244 (*info)[i].shell = shell;
245 (*info)[i].primary_gid = primary_gid;
246 sid_compose(&(*info)[i].group_sid, &domain->sid, group);
247 i++;
248 }
249
250 (*num_entries) = i;
251 status = NT_STATUS_OK;
252
253 DEBUG(3,("ads query_user_list gave %d entries\n", (*num_entries)));
254
255 done:
256 if (res)
257 ads_msgfree(ads, res);
258
259 return status;
260 }
261
262 /* list all domain groups */
263 static NTSTATUS enum_dom_groups(struct winbindd_domain *domain,
264 TALLOC_CTX *mem_ctx,
265 uint32 *num_entries,
266 struct acct_info **info)
267 {
268 ADS_STRUCT *ads = NULL;
269 const char *attrs[] = {"userPrincipalName", "sAMAccountName",
270 "name", "objectSid", NULL};
271 int i, count;
272 ADS_STATUS rc;
273 LDAPMessage *res = NULL;
274 LDAPMessage *msg = NULL;
275 NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
276 const char *filter;
277 BOOL enum_dom_local_groups = False;
278
279 *num_entries = 0;
280
281 DEBUG(3,("ads: enum_dom_groups\n"));
282
283 if ( !winbindd_can_contact_domain( domain ) ) {
284 DEBUG(10,("enum_dom_groups: No incoming trust for domain %s\n",
285 domain->name));
286 return NT_STATUS_OK;
287 }
288
289 /* only grab domain local groups for our domain */
290 if ( domain->active_directory && strequal(lp_realm(), domain->alt_name) ) {
291 enum_dom_local_groups = True;
292 }
293
294 /* Workaround ADS LDAP bug present in MS W2K3 SP0 and W2K SP4 w/o
295 * rollup-fixes:
296 *
297 * According to Section 5.1(4) of RFC 2251 if a value of a type is it's
298 * default value, it MUST be absent. In case of extensible matching the
299 * "dnattr" boolean defaults to FALSE and so it must be only be present
300 * when set to TRUE.
301 *
302 * When it is set to FALSE and the OpenLDAP lib (correctly) encodes a
303 * filter using bitwise matching rule then the buggy AD fails to decode
304 * the extensible match. As a workaround set it to TRUE and thereby add
305 * the dnAttributes "dn" field to cope with those older AD versions.
306 * It should not harm and won't put any additional load on the AD since
307 * none of the dn components have a bitmask-attribute.
308 *
309 * Thanks to Ralf Haferkamp for input and testing - Guenther */
310
311 filter = talloc_asprintf(mem_ctx, "(&(objectCategory=group)(&(groupType:dn:%s:=%d)(!(groupType:dn:%s:=%d))))",
312 ADS_LDAP_MATCHING_RULE_BIT_AND, GROUP_TYPE_SECURITY_ENABLED,
313 ADS_LDAP_MATCHING_RULE_BIT_AND,
314 enum_dom_local_groups ? GROUP_TYPE_BUILTIN_LOCAL_GROUP : GROUP_TYPE_RESOURCE_GROUP);
315
316 if (filter == NULL) {
317 status = NT_STATUS_NO_MEMORY;
318 goto done;
319 }
320
321 ads = ads_cached_connection(domain);
322
323 if (!ads) {
324 domain->last_status = NT_STATUS_SERVER_DISABLED;
325 goto done;
326 }
327
328 rc = ads_search_retry(ads, &res, filter, attrs);
329 if (!ADS_ERR_OK(rc) || !res) {
330 DEBUG(1,("enum_dom_groups ads_search: %s\n", ads_errstr(rc)));
331 goto done;
332 }
333
334 count = ads_count_replies(ads, res);
335 if (count == 0) {
336 DEBUG(1,("enum_dom_groups: No groups found\n"));
337 goto done;
338 }
339
340 (*info) = TALLOC_ZERO_ARRAY(mem_ctx, struct acct_info, count);
341 if (!*info) {
342 status = NT_STATUS_NO_MEMORY;
343 goto done;
344 }
345
346 i = 0;
347
348 for (msg = ads_first_entry(ads, res); msg; msg = ads_next_entry(ads, msg)) {
349 char *name, *gecos;
350 DOM_SID sid;
351 uint32 rid;
352
353 name = ads_pull_username(ads, mem_ctx, msg);
354 gecos = ads_pull_string(ads, mem_ctx, msg, "name");
355 if (!ads_pull_sid(ads, msg, "objectSid", &sid)) {
356 DEBUG(1,("No sid for %s !?\n", name));
357 continue;
358 }
359
360 if (!sid_peek_check_rid(&domain->sid, &sid, &rid)) {
361 DEBUG(1,("No rid for %s !?\n", name));
362 continue;
363 }
364
365 fstrcpy((*info)[i].acct_name, name);
366 fstrcpy((*info)[i].acct_desc, gecos);
367 (*info)[i].rid = rid;
368 i++;
369 }
370
371 (*num_entries) = i;
372
373 status = NT_STATUS_OK;
374
375 DEBUG(3,("ads enum_dom_groups gave %d entries\n", (*num_entries)));
376
377 done:
378 if (res)
379 ads_msgfree(ads, res);
380
381 return status;
382 }
383
384 /* list all domain local groups */
385 static NTSTATUS enum_local_groups(struct winbindd_domain *domain,
386 TALLOC_CTX *mem_ctx,
387 uint32 *num_entries,
388 struct acct_info **info)
389 {
390 /*
391 * This is a stub function only as we returned the domain
392 * local groups in enum_dom_groups() if the domain->native field
393 * was true. This is a simple performance optimization when
394 * using LDAP.
395 *
396 * if we ever need to enumerate domain local groups separately,
397 * then this the optimization in enum_dom_groups() will need
398 * to be split out
399 */
400 *num_entries = 0;
401
402 return NT_STATUS_OK;
403 }
404
405 /* If you are looking for "dn_lookup": Yes, it used to be here!
406 * It has gone now since it was a major speed bottleneck in
407 * lookup_groupmem (its only use). It has been replaced by
408 * an rpc lookup sids call... R.I.P. */
409
410 /* Lookup user information from a rid */
411 static NTSTATUS query_user(struct winbindd_domain *domain,
412 TALLOC_CTX *mem_ctx,
413 const DOM_SID *sid,
414 WINBIND_USERINFO *info)
415 {
416 ADS_STRUCT *ads = NULL;
417 const char *attrs[] = { "*", NULL };
418 ADS_STATUS rc;
419 int count;
420 LDAPMessage *msg = NULL;
421 char *ldap_exp;
422 char *sidstr;
423 uint32 group_rid;
424 NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
425 NET_USER_INFO_3 *user;
426
427 DEBUG(3,("ads: query_user\n"));
428
429 info->homedir = NULL;
430 info->shell = NULL;
431 info->primary_gid = (gid_t)-1;
432
433 /* try netsamlogon cache first */
434
435 if ( (user = netsamlogon_cache_get( mem_ctx, sid )) != NULL )
436 {
437
438 DEBUG(5,("query_user: Cache lookup succeeded for %s\n",
439 sid_string_static(sid)));
440
441 sid_compose(&info->user_sid, &domain->sid, user->user_rid);
442 sid_compose(&info->group_sid, &domain->sid, user->group_rid);
443
444 info->acct_name = unistr2_tdup(mem_ctx, &user->uni_user_name);
445 info->full_name = unistr2_tdup(mem_ctx, &user->uni_full_name);
446
447 nss_get_info_cached( domain, sid, mem_ctx, NULL, NULL,
448 &info->homedir, &info->shell, &info->full_name,
449 &info->primary_gid );
450
451 TALLOC_FREE(user);
452
453 return NT_STATUS_OK;
454 }
455
456 if ( !winbindd_can_contact_domain(domain)) {
457 DEBUG(8,("query_user: No incoming trust from domain %s\n",
458 domain->name));
459
460 /* We still need to generate some basic information
461 about the user even if we cannot contact the
462 domain. Most of this stuff we can deduce. */
463
464 sid_copy( &info->user_sid, sid );
465
466 /* Assume "Domain Users" for the primary group */
467
468 sid_compose(&info->group_sid, &domain->sid, DOMAIN_GROUP_RID_USERS );
469
470 /* Try to fill in what the nss_info backend can do */
471
472 nss_get_info_cached( domain, sid, mem_ctx, NULL, NULL,
473 &info->homedir, &info->shell, &info->full_name,
474 &info->primary_gid );
475
476 status = NT_STATUS_OK;
477 goto done;
478 }
479
480 /* no cache...do the query */
481
482 if ( (ads = ads_cached_connection(domain)) == NULL ) {
483 domain->last_status = NT_STATUS_SERVER_DISABLED;
484 goto done;
485 }
486
487 sidstr = sid_binstring(sid);
488 asprintf(&ldap_exp, "(objectSid=%s)", sidstr);
489 rc = ads_search_retry(ads, &msg, ldap_exp, attrs);
490 free(ldap_exp);
491 free(sidstr);
492 if (!ADS_ERR_OK(rc) || !msg) {
493 DEBUG(1,("query_user(sid=%s) ads_search: %s\n",
494 sid_string_static(sid), ads_errstr(rc)));
495 goto done;
496 }
497
498 count = ads_count_replies(ads, msg);
499 if (count != 1) {
500 DEBUG(1,("query_user(sid=%s): Not found\n",
501 sid_string_static(sid)));
502 goto done;
503 }
504
505 info->acct_name = ads_pull_username(ads, mem_ctx, msg);
506
507 nss_get_info_cached( domain, sid, mem_ctx, ads, msg,
508 &info->homedir, &info->shell, &info->full_name,
509 &info->primary_gid );
510
511 if (info->full_name == NULL) {
512 info->full_name = ads_pull_string(ads, mem_ctx, msg, "name");
513 }
514
515 if (!ads_pull_uint32(ads, msg, "primaryGroupID", &group_rid)) {
516 DEBUG(1,("No primary group for %s !?\n",
517 sid_string_static(sid)));
518 goto done;
519 }
520
521 sid_copy(&info->user_sid, sid);
522 sid_compose(&info->group_sid, &domain->sid, group_rid);
523
524 status = NT_STATUS_OK;
525
526 DEBUG(3,("ads query_user gave %s\n", info->acct_name));
527 done:
528 if (msg)
529 ads_msgfree(ads, msg);
530
531 return status;
532 }
533
534 /* Lookup groups a user is a member of - alternate method, for when
535 tokenGroups are not available. */
536 static NTSTATUS lookup_usergroups_member(struct winbindd_domain *domain,
537 TALLOC_CTX *mem_ctx,
538 const char *user_dn,
539 DOM_SID *primary_group,
540 size_t *p_num_groups, DOM_SID **user_sids)
541 {
542 ADS_STATUS rc;
543 NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
544 int count;
545 LDAPMessage *res = NULL;
546 LDAPMessage *msg = NULL;
547 char *ldap_exp;
548 ADS_STRUCT *ads;
549 const char *group_attrs[] = {"objectSid", NULL};
550 char *escaped_dn;
551 size_t num_groups = 0;
552
553 DEBUG(3,("ads: lookup_usergroups_member\n"));
554
555 if ( !winbindd_can_contact_domain( domain ) ) {
556 DEBUG(10,("lookup_usergroups_members: No incoming trust for domain %s\n",
557 domain->name));
558 return NT_STATUS_OK;
559 }
560
561 ads = ads_cached_connection(domain);
562
563 if (!ads) {
564 domain->last_status = NT_STATUS_SERVER_DISABLED;
565 goto done;
566 }
567
568 if (!(escaped_dn = escape_ldap_string_alloc(user_dn))) {
569 status = NT_STATUS_NO_MEMORY;
570 goto done;
571 }
572
573 if (!(ldap_exp = talloc_asprintf(mem_ctx, "(&(member=%s)(objectCategory=group))", escaped_dn))) {
574 DEBUG(1,("lookup_usergroups(dn=%s) asprintf failed!\n", user_dn));
575 SAFE_FREE(escaped_dn);
576 status = NT_STATUS_NO_MEMORY;
577 goto done;
578 }
579
580 SAFE_FREE(escaped_dn);
581
582 rc = ads_search_retry(ads, &res, ldap_exp, group_attrs);
583
584 if (!ADS_ERR_OK(rc) || !res) {
585 DEBUG(1,("lookup_usergroups ads_search member=%s: %s\n", user_dn, ads_errstr(rc)));
586 return ads_ntstatus(rc);
587 }
588
589 count = ads_count_replies(ads, res);
590
591 *user_sids = NULL;
592 num_groups = 0;
593
594 /* always add the primary group to the sid array */
595 if (!add_sid_to_array(mem_ctx, primary_group, user_sids, &num_groups)) {
596 status = NT_STATUS_NO_MEMORY;
597 goto done;
598 }
599
600 if (count > 0) {
601 for (msg = ads_first_entry(ads, res); msg;
602 msg = ads_next_entry(ads, msg)) {
603 DOM_SID group_sid;
604
605 if (!ads_pull_sid(ads, msg, "objectSid", &group_sid)) {
606 DEBUG(1,("No sid for this group ?!?\n"));
607 continue;
608 }
609
610 /* ignore Builtin groups from ADS - Guenther */
611 if (sid_check_is_in_builtin(&group_sid)) {
612 continue;
613 }
614
615 if (!add_sid_to_array(mem_ctx, &group_sid, user_sids,
616 &num_groups)) {
617 status = NT_STATUS_NO_MEMORY;
618 goto done;
619 }
620 }
621
622 }
623
624 *p_num_groups = num_groups;
625 status = (user_sids != NULL) ? NT_STATUS_OK : NT_STATUS_NO_MEMORY;
626
627 DEBUG(3,("ads lookup_usergroups (member) succeeded for dn=%s\n", user_dn));
628 done:
629 if (res)
630 ads_msgfree(ads, res);
631
632 return status;
633 }
634
635 /* Lookup groups a user is a member of - alternate method, for when
636 tokenGroups are not available. */
637 static NTSTATUS lookup_usergroups_memberof(struct winbindd_domain *domain,
638 TALLOC_CTX *mem_ctx,
639 const char *user_dn,
640 DOM_SID *primary_group,
641 size_t *p_num_groups, DOM_SID **user_sids)
642 {
643 ADS_STATUS rc;
644 NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
645 ADS_STRUCT *ads;
646 const char *attrs[] = {"memberOf", NULL};
647 size_t num_groups = 0;
648 DOM_SID *group_sids = NULL;
649 int i;
650 char **strings;
651 size_t num_strings = 0;
652
653
654 DEBUG(3,("ads: lookup_usergroups_memberof\n"));
655
656 if ( !winbindd_can_contact_domain( domain ) ) {
657 DEBUG(10,("lookup_usergroups_memberof: No incoming trust for domain %s\n",
658 domain->name));
659 return NT_STATUS_OK;
660 }
661
662 ads = ads_cached_connection(domain);
663
664 if (!ads) {
665 domain->last_status = NT_STATUS_SERVER_DISABLED;
666 goto done;
667 }
668
669 rc = ads_search_retry_extended_dn_ranged(ads, mem_ctx, user_dn, attrs,
670 ADS_EXTENDED_DN_HEX_STRING,
671 &strings, &num_strings);
672
673 if (!ADS_ERR_OK(rc)) {
674 DEBUG(1,("lookup_usergroups_memberof ads_search member=%s: %s\n",
675 user_dn, ads_errstr(rc)));
676 return ads_ntstatus(rc);
677 }
678
679 *user_sids = NULL;
680 num_groups = 0;
681
682 /* always add the primary group to the sid array */
683 if (!add_sid_to_array(mem_ctx, primary_group, user_sids, &num_groups)) {
684 status = NT_STATUS_NO_MEMORY;
685 goto done;
686 }
687
688 group_sids = TALLOC_ZERO_ARRAY(mem_ctx, DOM_SID, num_strings + 1);
689 if (!group_sids) {
690 TALLOC_FREE(strings);
691 status = NT_STATUS_NO_MEMORY;
692 goto done;
693 }
694
695 for (i=0; i<num_strings; i++) {
696
697 if (!ads_get_sid_from_extended_dn(mem_ctx, strings[i],
698 ADS_EXTENDED_DN_HEX_STRING,
699 &(group_sids)[i])) {
700 TALLOC_FREE(group_sids);
701 TALLOC_FREE(strings);
702 status = NT_STATUS_NO_MEMORY;
703 goto done;
704 }
705 }
706
707 if (i == 0) {
708 DEBUG(1,("No memberOf for this user?!?\n"));
709 status = NT_STATUS_NO_MEMORY;
710 goto done;
711 }
712
713 for (i=0; i<num_strings; i++) {
714
715 /* ignore Builtin groups from ADS - Guenther */
716 if (sid_check_is_in_builtin(&group_sids[i])) {
717 continue;
718 }
719
720 if (!add_sid_to_array(mem_ctx, &group_sids[i], user_sids,
721 &num_groups)) {
722 status = NT_STATUS_NO_MEMORY;
723 goto done;
724 }
725
726 }
727
728 *p_num_groups = num_groups;
729 status = (*user_sids != NULL) ? NT_STATUS_OK : NT_STATUS_NO_MEMORY;
730
731 DEBUG(3,("ads lookup_usergroups (memberof) succeeded for dn=%s\n", user_dn));
732 done:
733 TALLOC_FREE(group_sids);
734
735 return status;
736 }
737
738
739 /* Lookup groups a user is a member of. */
740 static NTSTATUS lookup_usergroups(struct winbindd_domain *domain,
741 TALLOC_CTX *mem_ctx,
742 const DOM_SID *sid,
743 uint32 *p_num_groups, DOM_SID **user_sids)
744 {
745 ADS_STRUCT *ads = NULL;
746 const char *attrs[] = {"tokenGroups", "primaryGroupID", NULL};
747 ADS_STATUS rc;
748 int count;
749 LDAPMessage *msg = NULL;
750 char *user_dn = NULL;
751 DOM_SID *sids;
752 int i;
753 DOM_SID primary_group;
754 uint32 primary_group_rid;
755 fstring sid_string;
756 NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
757 size_t num_groups = 0;
758
759 DEBUG(3,("ads: lookup_usergroups\n"));
760 *p_num_groups = 0;
761
762 status = lookup_usergroups_cached(domain, mem_ctx, sid,
763 p_num_groups, user_sids);
764 if (NT_STATUS_IS_OK(status)) {
765 return NT_STATUS_OK;
766 }
767
768 if ( !winbindd_can_contact_domain( domain ) ) {
769 DEBUG(10,("lookup_usergroups: No incoming trust for domain %s\n",
770 domain->name));
771
772 /* Tell the cache manager not to remember this one */
773
774 return NT_STATUS_SYNCHRONIZATION_REQUIRED;
775 }
776
777 ads = ads_cached_connection(domain);
778
779 if (!ads) {
780 domain->last_status = NT_STATUS_SERVER_DISABLED;
781 status = NT_STATUS_SERVER_DISABLED;
782 goto done;
783 }
784
785 rc = ads_search_retry_sid(ads, &msg, sid, attrs);
786
787 if (!ADS_ERR_OK(rc)) {
788 status = ads_ntstatus(rc);
789 DEBUG(1,("lookup_usergroups(sid=%s) ads_search tokenGroups: %s\n",
790 sid_to_string(sid_string, sid), ads_errstr(rc)));
791 goto done;
792 }
793
794 count = ads_count_replies(ads, msg);
795 if (count != 1) {
796 status = NT_STATUS_UNSUCCESSFUL;
797 DEBUG(1,("lookup_usergroups(sid=%s) ads_search tokenGroups: "
798 "invalid number of results (count=%d)\n",
799 sid_to_string(sid_string, sid), count));
800 goto done;
801 }
802
803 if (!msg) {
804 DEBUG(1,("lookup_usergroups(sid=%s) ads_search tokenGroups: NULL msg\n",
805 sid_to_string(sid_string, sid)));
806 status = NT_STATUS_UNSUCCESSFUL;
807 goto done;
808 }
809
810 user_dn = ads_get_dn(ads, msg);
811 if (user_dn == NULL) {
812 status = NT_STATUS_NO_MEMORY;
813 goto done;
814 }
815
816 if (!ads_pull_uint32(ads, msg, "primaryGroupID", &primary_group_rid)) {
817 DEBUG(1,("%s: No primary group for sid=%s !?\n",
818 domain->name, sid_to_string(sid_string, sid)));
819 goto done;
820 }
821
822 sid_copy(&primary_group, &domain->sid);
823 sid_append_rid(&primary_group, primary_group_rid);
824
825 count = ads_pull_sids(ads, mem_ctx, msg, "tokenGroups", &sids);
826
827 /* there must always be at least one group in the token,
828 unless we are talking to a buggy Win2k server */
829
830 /* actually this only happens when the machine account has no read
831 * permissions on the tokenGroup attribute - gd */
832
833 if (count == 0) {
834
835 /* no tokenGroups */
836
837 /* lookup what groups this user is a member of by DN search on
838 * "memberOf" */
839
840 status = lookup_usergroups_memberof(domain, mem_ctx, user_dn,
841 &primary_group,
842 &num_groups, user_sids);
843 *p_num_groups = (uint32)num_groups;
844 if (NT_STATUS_IS_OK(status)) {
845 goto done;
846 }
847
848 /* lookup what groups this user is a member of by DN search on
849 * "member" */
850
851 status = lookup_usergroups_member(domain, mem_ctx, user_dn,
852 &primary_group,
853 &num_groups, user_sids);
854 *p_num_groups = (uint32)num_groups;
855 goto done;
856 }
857
858 *user_sids = NULL;
859 num_groups = 0;
860
861 if (!add_sid_to_array(mem_ctx, &primary_group, user_sids, &num_groups)) {
862 status = NT_STATUS_NO_MEMORY;
863 goto done;
864 }
865
866 for (i=0;i<count;i++) {
867
868 /* ignore Builtin groups from ADS - Guenther */
869 if (sid_check_is_in_builtin(&sids[i])) {
870 continue;
871 }
872
873 if (!add_sid_to_array_unique(mem_ctx, &sids[i],
874 user_sids, &num_groups)) {
875 status = NT_STATUS_NO_MEMORY;
876 goto done;
877 }
878 }
879
880 *p_num_groups = (uint32)num_groups;
881 status = (*user_sids != NULL) ? NT_STATUS_OK : NT_STATUS_NO_MEMORY;
882
883 DEBUG(3,("ads lookup_usergroups (tokenGroups) succeeded for sid=%s\n",
884 sid_to_string(sid_string, sid)));
885 done:
886 ads_memfree(ads, user_dn);
887 ads_msgfree(ads, msg);
888 return status;
889 }
890
891 /*
892 find the members of a group, given a group rid and domain
893 */
894 static NTSTATUS lookup_groupmem(struct winbindd_domain *domain,
895 TALLOC_CTX *mem_ctx,
896 const DOM_SID *group_sid, uint32 *num_names,
897 DOM_SID **sid_mem, char ***names,
898 uint32 **name_types)
899 {
900 ADS_STATUS rc;
901 ADS_STRUCT *ads = NULL;
902 char *ldap_exp;
903 NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
904 char **members = NULL;
905 int i;
906 size_t num_members = 0;
907 ads_control args;
908 struct rpc_pipe_client *cli;
909 POLICY_HND lsa_policy;
910 DOM_SID *sid_mem_nocache = NULL;
911 char **names_nocache = NULL;
912 uint32 *name_types_nocache = NULL;
913 char **domains_nocache = NULL; /* only needed for rpccli_lsa_lookup_sids */
914 uint32 num_nocache = 0;
915
916 DEBUG(10,("ads: lookup_groupmem %s sid=%s\n", domain->name,
917 sid_string_static(group_sid)));
918
919 *num_names = 0;
920
921 if ( !winbindd_can_contact_domain( domain ) ) {
922 DEBUG(10,("lookup_groupmem: No incoming trust for domain %s\n",
923 domain->name));
924 return NT_STATUS_OK;
925 }
926
927 ads = ads_cached_connection(domain);
928
929 if (!ads) {
930 domain->last_status = NT_STATUS_SERVER_DISABLED;
931 goto done;
932 }
933
934 /* search for all members of the group */
935 if (!(ldap_exp = talloc_asprintf(mem_ctx, "(objectSid=%s)",
936 sid_string_static(group_sid))))
937 {
938 DEBUG(1, ("ads: lookup_groupmem: talloc_asprintf for ldap_exp failed!\n"));
939 status = NT_STATUS_NO_MEMORY;
940 goto done;
941 }
942
943 args.control = ADS_EXTENDED_DN_OID;
944 args.val = ADS_EXTENDED_DN_HEX_STRING;
945 args.critical = True;
946
947 rc = ads_ranged_search(ads, mem_ctx, LDAP_SCOPE_SUBTREE, ads->config.bind_path,
948 ldap_exp, &args, "member", &members, &num_members);
949
950 if (!ADS_ERR_OK(rc)) {
951 DEBUG(0,("ads_ranged_search failed with: %s\n", ads_errstr(rc)));
952 status = NT_STATUS_UNSUCCESSFUL;
953 goto done;
954 }
955
956 DEBUG(10, ("ads lookup_groupmem: got %d sids via extended dn call\n", num_members));
957
958 /* Now that we have a list of sids, we need to get the
959 * lists of names and name_types belonging to these sids.
960 * even though conceptually not quite clean, we use the
961 * RPC call lsa_lookup_sids for this since it can handle a
962 * list of sids. ldap calls can just resolve one sid at a time.
963 *
964 * At this stage, the sids are still hidden in the exetended dn
965 * member output format. We actually do a little better than
966 * stated above: In extracting the sids from the member strings,
967 * we try to resolve as many sids as possible from the
968 * cache. Only the rest is passed to the lsa_lookup_sids call. */
969
970 if (num_names) {
971 (*sid_mem) = TALLOC_ZERO_ARRAY(mem_ctx, DOM_SID, num_members);
972 (*names) = TALLOC_ZERO_ARRAY(mem_ctx, char *, num_members);
973 (*name_types) = TALLOC_ZERO_ARRAY(mem_ctx, uint32, num_members);
974 (sid_mem_nocache) = TALLOC_ZERO_ARRAY(mem_ctx, DOM_SID, num_members);
975
976 if ((members == NULL) || (*sid_mem == NULL) ||
977 (*names == NULL) || (*name_types == NULL) ||
978 (sid_mem_nocache == NULL))
979 {
980 DEBUG(1, ("talloc failed\n"));
981 status = NT_STATUS_NO_MEMORY;
982 goto done;
983 }
984 }
985 else {
986 (*sid_mem) = NULL;
987 (*names) = NULL;
988 (*name_types) = NULL;
989 }
990
991 for (i=0; i<num_members; i++) {
992 uint32 name_type;
993 char *name, *domain_name;
994 DOM_SID sid;
995
996 if (!ads_get_sid_from_extended_dn(mem_ctx, members[i], args.val, &sid)) {
997 status = NT_STATUS_INVALID_PARAMETER;
998 goto done;
999 }
1000 if (lookup_cached_sid(mem_ctx, &sid, &domain_name, &name, &name_type)) {
1001 DEBUG(10,("ads: lookup_groupmem: got sid %s from cache\n",
1002 sid_string_static(&sid)));
1003 sid_copy(&(*sid_mem)[*num_names], &sid);
1004 (*names)[*num_names] = CONST_DISCARD(char *,name);
1005 (*name_types)[*num_names] = name_type;
1006 (*num_names)++;
1007 }
1008 else {
1009 DEBUG(10, ("ads: lookup_groupmem: sid %s not found in cache\n",
1010 sid_string_static(&sid)));
1011 sid_copy(&(sid_mem_nocache)[num_nocache], &sid);
1012 num_nocache++;
1013 }
1014 }
1015
1016 DEBUG(10, ("ads: lookup_groupmem: %d sids found in cache, "
1017 "%d left for lsa_lookupsids\n", *num_names, num_nocache));
1018
1019 /* handle sids not resolved from cache by lsa_lookup_sids */
1020 if (num_nocache > 0) {
1021
1022 status = cm_connect_lsa(domain, mem_ctx, &cli, &lsa_policy);
1023
1024 if (!NT_STATUS_IS_OK(status)) {
1025 goto done;
1026 }
1027
1028 status = rpccli_lsa_lookup_sids_all(cli, mem_ctx,
1029 &lsa_policy,
1030 num_nocache,
1031 sid_mem_nocache,
1032 &domains_nocache,
1033 &names_nocache,
1034 &name_types_nocache);
1035
1036 if (NT_STATUS_IS_OK(status) ||
1037 NT_STATUS_EQUAL(status, STATUS_SOME_UNMAPPED))
1038 {
1039 /* Copy the entries over from the "_nocache" arrays
1040 * to the result arrays, skipping the gaps the
1041 * lookup_sids call left. */
1042 *num_names = 0;
1043 for (i=0; i < num_nocache; i++) {
1044 if (((names_nocache)[i] != NULL) &&
1045 ((name_types_nocache)[i] != SID_NAME_UNKNOWN))
1046 {
1047 sid_copy(&(*sid_mem)[*num_names],
1048 &sid_mem_nocache[i]);
1049 (*names)[*num_names] = names_nocache[i];
1050 (*name_types)[*num_names] = name_types_nocache[i];
1051 (*num_names)++;
1052 }
1053 }
1054 }
1055 else if (NT_STATUS_EQUAL(status, NT_STATUS_NONE_MAPPED)) {
1056 DEBUG(10, ("lookup_groupmem: lsa_lookup_sids could "
1057 "not map any SIDs at all.\n"));
1058 /* Don't handle this as an error here.
1059 * There is nothing left to do with respect to the
1060 * overall result... */
1061 }
1062 else if (!NT_STATUS_IS_OK(status)) {
1063 DEBUG(10, ("lookup_groupmem: Error looking up %d "
1064 "sids via rpc_lsa_lookup_sids: %s\n",
1065 num_members, nt_errstr(status)));
1066 goto done;
1067 }
1068 }
1069
1070 status = NT_STATUS_OK;
1071 DEBUG(3,("ads lookup_groupmem for sid=%s succeeded\n",
1072 sid_string_static(group_sid)));
1073
1074 done:
1075
1076 /* free intermediate lists. - a temp talloc ctx might be better. */
1077 TALLOC_FREE(sid_mem_nocache);
1078 TALLOC_FREE(names_nocache);
1079 TALLOC_FREE(name_types_nocache);
1080 TALLOC_FREE(domains_nocache);
1081
1082 return status;
1083 }
1084
1085 /* find the sequence number for a domain */
1086 static NTSTATUS sequence_number(struct winbindd_domain *domain, uint32 *seq)
1087 {
1088 ADS_STRUCT *ads = NULL;
1089 ADS_STATUS rc;
1090
1091 DEBUG(3,("ads: fetch sequence_number for %s\n", domain->name));
1092
1093 if ( !winbindd_can_contact_domain( domain ) ) {
1094 DEBUG(10,("sequence: No incoming trust for domain %s\n",
1095 domain->name));
1096 *seq = time(NULL);
1097 return NT_STATUS_OK;
1098 }
1099
1100 *seq = DOM_SEQUENCE_NONE;
1101
1102 ads = ads_cached_connection(domain);
1103
1104 if (!ads) {
1105 domain->last_status = NT_STATUS_SERVER_DISABLED;
1106 return NT_STATUS_UNSUCCESSFUL;
1107 }
1108
1109 rc = ads_USN(ads, seq);
1110
1111 if (!ADS_ERR_OK(rc)) {
1112
1113 /* its a dead connection, destroy it */
1114
1115 if (domain->private_data) {
1116 ads = (ADS_STRUCT *)domain->private_data;
1117 ads->is_mine = True;
1118 ads_destroy(&ads);
1119 ads_kdestroy("MEMORY:winbind_ccache");
1120 domain->private_data = NULL;
1121 }
1122 }
1123 return ads_ntstatus(rc);
1124 }
1125
1126 /* get a list of trusted domains */
1127 static NTSTATUS trusted_domains(struct winbindd_domain *domain,
1128 TALLOC_CTX *mem_ctx,
1129 uint32 *num_domains,
1130 char ***names,
1131 char ***alt_names,
1132 DOM_SID **dom_sids)
1133 {
1134 NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
1135 struct ds_domain_trust *domains = NULL;
1136 int count = 0;
1137 int i;
1138 uint32 flags;
1139 struct rpc_pipe_client *cli;
1140 uint32 fr_flags = (DS_DOMAIN_IN_FOREST | DS_DOMAIN_TREE_ROOT);
1141 int ret_count;
1142
1143 DEBUG(3,("ads: trusted_domains\n"));
1144
1145 *num_domains = 0;
1146 *alt_names = NULL;
1147 *names = NULL;
1148 *dom_sids = NULL;
1149
1150 /* If this is our primary domain or a root in our forest,
1151 query for all trusts. If not, then just look for domain
1152 trusts in the target forest */
1153
1154 if ( domain->primary ||
1155 ((domain->domain_flags&fr_flags) == fr_flags) )
1156 {
1157 flags = DS_DOMAIN_DIRECT_OUTBOUND |
1158 DS_DOMAIN_DIRECT_INBOUND |
1159 DS_DOMAIN_IN_FOREST;
1160 } else {
1161 flags = DS_DOMAIN_IN_FOREST;
1162 }
1163
1164 result = cm_connect_netlogon(domain, &cli);
1165
1166 if (!NT_STATUS_IS_OK(result)) {
1167 DEBUG(5, ("trusted_domains: Could not open a connection to %s "
1168 "for PIPE_NETLOGON (%s)\n",
1169 domain->name, nt_errstr(result)));
1170 return NT_STATUS_UNSUCCESSFUL;
1171 }
1172
1173 if ( NT_STATUS_IS_OK(result) ) {
1174 result = rpccli_ds_enum_domain_trusts(cli, mem_ctx,
1175 cli->cli->desthost,
1176 flags, &domains,
1177 (unsigned int *)&count);
1178 }
1179
1180 if ( NT_STATUS_IS_OK(result) && count) {
1181
1182 /* Allocate memory for trusted domain names and sids */
1183
1184 if ( !(*names = TALLOC_ARRAY(mem_ctx, char *, count)) ) {
1185 DEBUG(0, ("trusted_domains: out of memory\n"));
1186 return NT_STATUS_NO_MEMORY;
1187 }
1188
1189 if ( !(*alt_names = TALLOC_ARRAY(mem_ctx, char *, count)) ) {
1190 DEBUG(0, ("trusted_domains: out of memory\n"));
1191 return NT_STATUS_NO_MEMORY;
1192 }
1193
1194 if ( !(*dom_sids = TALLOC_ARRAY(mem_ctx, DOM_SID, count)) ) {
1195 DEBUG(0, ("trusted_domains: out of memory\n"));
1196 return NT_STATUS_NO_MEMORY;
1197 }
1198
1199 /* Copy across names and sids */
1200
1201
1202 ret_count = 0;
1203 for (i = 0; i < count; i++) {
1204 struct winbindd_domain d;
1205
1206 /* drop external trusts if this is not our primary
1207 domain. This means that the returned number of
1208 domains may be less that the ones actually trusted
1209 by the DC. */
1210
1211 if ( (domains[i].trust_attributes == DS_DOMAIN_TRUST_ATTRIB_QUARANTINED_DOMAIN) &&
1212 !domain->primary )
1213 {
1214 DEBUG(10,("trusted_domains: Skipping external trusted domain "
1215 "%s because it is outside of our primary domain\n",
1216 domains[i].netbios_domain));
1217 continue;
1218 }
1219
1220 (*names)[ret_count] = domains[i].netbios_domain;
1221 (*alt_names)[ret_count] = domains[i].dns_domain;
1222 sid_copy(&(*dom_sids)[ret_count], &domains[i].sid);
1223
1224 /* add to the trusted domain cache */
1225
1226 fstrcpy( d.name, domains[i].netbios_domain );
1227 fstrcpy( d.alt_name, domains[i].dns_domain );
1228 sid_copy( &d.sid, &domains[i].sid );
1229
1230 /* This gets a little tricky. If we are
1231 following a transitive forest trust, then
1232 innerit the flags, type, and attrins from
1233 the domain we queried to make sure we don't
1234 record the view of the trust from the wrong
1235 side. Always view it from the side of our
1236 primary domain. --jerry */
1237 if ( domain->primary ||
1238 ((domain->domain_flags&fr_flags) == fr_flags) )
1239 {
1240 DEBUG(10,("trusted_domains(ads): Storing trust "
1241 "flags for domain %s\n", d.alt_name));
1242
1243 /* Look this up in cache to make sure
1244 we have the current trust flags and
1245 attributes */
1246
1247 d.domain_flags = domains[i].flags;
1248 d.domain_type = domains[i].trust_type;
1249 d.domain_trust_attribs = domains[i].trust_attributes;
1250 } else {
1251 DEBUG(10,("trusted_domains(ads): Inheriting trust "
1252 "flags for domain %s\n", d.alt_name));
1253 d.domain_flags = domain->domain_flags;
1254 d.domain_type = domain->domain_type;
1255 d.domain_trust_attribs = domain->domain_trust_attribs;
1256 }
1257
1258 wcache_tdc_add_domain( &d );
1259
1260 ret_count++;
1261
1262 }
1263
1264 *num_domains = ret_count;
1265 }
1266
1267 return result;
1268 }
1269
1270 /* the ADS backend methods are exposed via this structure */
1271 struct winbindd_methods ads_methods = {
1272 True,
1273 query_user_list,
1274 enum_dom_groups,
1275 enum_local_groups,
1276 msrpc_name_to_sid,
1277 msrpc_sid_to_name,
1278 msrpc_rids_to_names,
1279 query_user,
1280 lookup_usergroups,
1281 msrpc_lookup_useraliases,
1282 lookup_groupmem,
1283 sequence_number,
1284 msrpc_lockout_policy,
1285 msrpc_password_policy,
1286 trusted_domains,
1287 };
1288
1289 #endif
Samba GIT mirror