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s3: Fix bug 8904 -- wbinfo --lookup-sids "" crashes winbind
[Samba/gebeck_regimport.git] / source3 / winbindd / idmap_ad.c
blobbfe7d4b91b5d19c956281cdeb40521520866d3d2
1 /*
2 * idmap_ad: map between Active Directory and RFC 2307 or "Services for Unix" (SFU) Accounts
3 *
4 * Unix SMB/CIFS implementation.
5 *
6 * Winbind ADS backend functions
7 *
8 * Copyright (C) Andrew Tridgell 2001
9 * Copyright (C) Andrew Bartlett <abartlet@samba.org> 2003
10 * Copyright (C) Gerald (Jerry) Carter 2004-2007
11 * Copyright (C) Luke Howard 2001-2004
12 * Copyright (C) Michael Adam 2008,2010
13 *
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License as published by
16 * the Free Software Foundation; either version 3 of the License, or
17 * (at your option) any later version.
18 *
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
23 *
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, see <http://www.gnu.org/licenses/>.
26 */
27
28 #include "includes.h"
29 #include "winbindd.h"
30 #include "../libds/common/flags.h"
31 #include "ads.h"
32 #include "libads/ldap_schema.h"
33 #include "nss_info.h"
34 #include "secrets.h"
35 #include "idmap.h"
36 #include "../libcli/ldap/ldap_ndr.h"
37 #include "../libcli/security/security.h"
38
39 #undef DBGC_CLASS
40 #define DBGC_CLASS DBGC_IDMAP
41
42 #define WINBIND_CCACHE_NAME "MEMORY:winbind_ccache"
43
44 #define IDMAP_AD_MAX_IDS 30
45 #define CHECK_ALLOC_DONE(mem) do { \
46 if (!mem) { \
47 DEBUG(0, ("Out of memory!\n")); \
48 ret = NT_STATUS_NO_MEMORY; \
49 goto done; \
50 } \
51 } while (0)
52
53 struct idmap_ad_context {
54 ADS_STRUCT *ads;
55 struct posix_schema *ad_schema;
56 enum wb_posix_mapping ad_map_type; /* WB_POSIX_MAP_UNKNOWN */
57 };
58
59 /************************************************************************
60 ***********************************************************************/
61
62 static ADS_STATUS ad_idmap_cached_connection_internal(struct idmap_domain *dom)
63 {
64 ADS_STRUCT *ads;
65 ADS_STATUS status;
66 fstring dc_name;
67 struct sockaddr_storage dc_ip;
68 struct idmap_ad_context *ctx;
69 char *ldap_server = NULL;
70 char *realm = NULL;
71 struct winbindd_domain *wb_dom;
72
73 DEBUG(10, ("ad_idmap_cached_connection: called for domain '%s'\n",
74 dom->name));
75
76 ctx = talloc_get_type(dom->private_data, struct idmap_ad_context);
77
78 if (ctx->ads != NULL) {
79
80 time_t expire;
81 time_t now = time(NULL);
82
83 ads = ctx->ads;
84
85 expire = MIN(ads->auth.tgt_expire, ads->auth.tgs_expire);
86
87 /* check for a valid structure */
88 DEBUG(7, ("Current tickets expire in %d seconds (at %d, time is now %d)\n",
89 (uint32)expire-(uint32)now, (uint32) expire, (uint32) now));
90
91 if ( ads->config.realm && (expire > time(NULL))) {
92 return ADS_SUCCESS;
93 } else {
94 /* we own this ADS_STRUCT so make sure it goes away */
95 DEBUG(7,("Deleting expired krb5 credential cache\n"));
96 ads->is_mine = True;
97 ads_destroy( &ads );
98 ads_kdestroy(WINBIND_CCACHE_NAME);
99 ctx->ads = NULL;
100 }
101 }
102
103 /* we don't want this to affect the users ccache */
104 setenv("KRB5CCNAME", WINBIND_CCACHE_NAME, 1);
105
106 /*
107 * At this point we only have the NetBIOS domain name.
108 * Check if we can get server nam and realm from SAF cache
109 * and the domain list.
110 */
111 ldap_server = saf_fetch(dom->name);
112 DEBUG(10, ("ldap_server from saf cache: '%s'\n", ldap_server?ldap_server:""));
113
114 wb_dom = find_domain_from_name_noinit(dom->name);
115 if (wb_dom == NULL) {
116 DEBUG(10, ("find_domain_from_name_noinit did not find domain '%s'\n",
117 dom->name));
118 realm = NULL;
119 } else {
120 DEBUG(10, ("find_domain_from_name_noinit found realm '%s' for "
121 " domain '%s'\n", wb_dom->alt_name, dom->name));
122 realm = wb_dom->alt_name;
123 }
124
125 if ( (ads = ads_init(realm, dom->name, ldap_server)) == NULL ) {
126 DEBUG(1,("ads_init failed\n"));
127 return ADS_ERROR_NT(NT_STATUS_NO_MEMORY);
128 }
129
130 /* the machine acct password might have change - fetch it every time */
131 SAFE_FREE(ads->auth.password);
132 ads->auth.password = secrets_fetch_machine_password(lp_workgroup(), NULL, NULL);
133
134 SAFE_FREE(ads->auth.realm);
135 ads->auth.realm = SMB_STRDUP(lp_realm());
136
137 /* setup server affinity */
138
139 get_dc_name(dom->name, realm, dc_name, &dc_ip );
140
141 status = ads_connect(ads);
142 if (!ADS_ERR_OK(status)) {
143 DEBUG(1, ("ad_idmap_cached_connection_internal: failed to "
144 "connect to AD\n"));
145 ads_destroy(&ads);
146 return status;
147 }
148
149 ads->is_mine = False;
150
151 ctx->ads = ads;
152
153 return ADS_SUCCESS;
154 }
155
156 /************************************************************************
157 ***********************************************************************/
158
159 static ADS_STATUS ad_idmap_cached_connection(struct idmap_domain *dom)
160 {
161 ADS_STATUS status;
162 struct idmap_ad_context * ctx;
163
164 status = ad_idmap_cached_connection_internal(dom);
165 if (!ADS_ERR_OK(status)) {
166 return status;
167 }
168
169 ctx = talloc_get_type(dom->private_data, struct idmap_ad_context);
170
171 /* if we have a valid ADS_STRUCT and the schema model is
172 defined, then we can return here. */
173
174 if ( ctx->ad_schema ) {
175 return ADS_SUCCESS;
176 }
177
178 /* Otherwise, set the schema model */
179
180 if ( (ctx->ad_map_type == WB_POSIX_MAP_SFU) ||
181 (ctx->ad_map_type == WB_POSIX_MAP_SFU20) ||
182 (ctx->ad_map_type == WB_POSIX_MAP_RFC2307) )
183 {
184 status = ads_check_posix_schema_mapping(
185 ctx, ctx->ads, ctx->ad_map_type, &ctx->ad_schema);
186 if ( !ADS_ERR_OK(status) ) {
187 DEBUG(2,("ad_idmap_cached_connection: Failed to obtain schema details!\n"));
188 }
189 }
190
191 return status;
192 }
193
194 static int idmap_ad_context_destructor(struct idmap_ad_context *ctx)
195 {
196 if (ctx->ads != NULL) {
197 /* we own this ADS_STRUCT so make sure it goes away */
198 ctx->ads->is_mine = True;
199 ads_destroy( &ctx->ads );
200 ctx->ads = NULL;
201 }
202 return 0;
203 }
204
205 /************************************************************************
206 ***********************************************************************/
207
208 static NTSTATUS idmap_ad_initialize(struct idmap_domain *dom)
209 {
210 struct idmap_ad_context *ctx;
211 char *config_option;
212 const char *schema_mode = NULL;
213
214 ctx = talloc_zero(dom, struct idmap_ad_context);
215 if (ctx == NULL) {
216 DEBUG(0, ("Out of memory!\n"));
217 return NT_STATUS_NO_MEMORY;
218 }
219 talloc_set_destructor(ctx, idmap_ad_context_destructor);
220
221 config_option = talloc_asprintf(ctx, "idmap config %s", dom->name);
222 if (config_option == NULL) {
223 DEBUG(0, ("Out of memory!\n"));
224 talloc_free(ctx);
225 return NT_STATUS_NO_MEMORY;
226 }
227
228 /* default map type */
229 ctx->ad_map_type = WB_POSIX_MAP_RFC2307;
230
231 /* schema mode */
232 schema_mode = lp_parm_const_string(-1, config_option, "schema_mode", NULL);
233 if ( schema_mode && schema_mode[0] ) {
234 if ( strequal(schema_mode, "sfu") )
235 ctx->ad_map_type = WB_POSIX_MAP_SFU;
236 else if ( strequal(schema_mode, "sfu20" ) )
237 ctx->ad_map_type = WB_POSIX_MAP_SFU20;
238 else if ( strequal(schema_mode, "rfc2307" ) )
239 ctx->ad_map_type = WB_POSIX_MAP_RFC2307;
240 else
241 DEBUG(0,("idmap_ad_initialize: Unknown schema_mode (%s)\n",
242 schema_mode));
243 }
244
245 dom->private_data = ctx;
246
247 talloc_free(config_option);
248
249 return NT_STATUS_OK;
250 }
251
252 /************************************************************************
253 Search up to IDMAP_AD_MAX_IDS entries in maps for a match.
254 ***********************************************************************/
255
256 static struct id_map *find_map_by_id(struct id_map **maps, enum id_type type, uint32_t id)
257 {
258 int i;
259
260 for (i = 0; maps[i] && i<IDMAP_AD_MAX_IDS; i++) {
261 if ((maps[i]->xid.type == type) && (maps[i]->xid.id == id)) {
262 return maps[i];
263 }
264 }
265
266 return NULL;
267 }
268
269 /************************************************************************
270 Search up to IDMAP_AD_MAX_IDS entries in maps for a match
271 ***********************************************************************/
272
273 static struct id_map *find_map_by_sid(struct id_map **maps, struct dom_sid *sid)
274 {
275 int i;
276
277 for (i = 0; maps[i] && i<IDMAP_AD_MAX_IDS; i++) {
278 if (dom_sid_equal(maps[i]->sid, sid)) {
279 return maps[i];
280 }
281 }
282
283 return NULL;
284 }
285
286 /************************************************************************
287 ***********************************************************************/
288
289 static NTSTATUS idmap_ad_unixids_to_sids(struct idmap_domain *dom, struct id_map **ids)
290 {
291 NTSTATUS ret;
292 TALLOC_CTX *memctx;
293 struct idmap_ad_context *ctx;
294 ADS_STATUS rc;
295 const char *attrs[] = { "sAMAccountType",
296 "objectSid",
297 NULL, /* uidnumber */
298 NULL, /* gidnumber */
299 NULL };
300 LDAPMessage *res = NULL;
301 LDAPMessage *entry = NULL;
302 char *filter = NULL;
303 int idx = 0;
304 int bidx = 0;
305 int count;
306 int i;
307 char *u_filter = NULL;
308 char *g_filter = NULL;
309
310 /* initialize the status to avoid suprise */
311 for (i = 0; ids[i]; i++) {
312 ids[i]->status = ID_UNKNOWN;
313 }
314
315 /* Only do query if we are online */
316 if (idmap_is_offline()) {
317 return NT_STATUS_FILE_IS_OFFLINE;
318 }
319
320 ctx = talloc_get_type(dom->private_data, struct idmap_ad_context);
321
322 if ( (memctx = talloc_new(ctx)) == NULL ) {
323 DEBUG(0, ("Out of memory!\n"));
324 return NT_STATUS_NO_MEMORY;
325 }
326
327 rc = ad_idmap_cached_connection(dom);
328 if (!ADS_ERR_OK(rc)) {
329 DEBUG(1, ("ADS uninitialized: %s\n", ads_errstr(rc)));
330 ret = NT_STATUS_UNSUCCESSFUL;
331 /* ret = ads_ntstatus(rc); */
332 goto done;
333 }
334
335 attrs[2] = ctx->ad_schema->posix_uidnumber_attr;
336 attrs[3] = ctx->ad_schema->posix_gidnumber_attr;
337
338 again:
339 bidx = idx;
340 for (i = 0; (i < IDMAP_AD_MAX_IDS) && ids[idx]; i++, idx++) {
341 switch (ids[idx]->xid.type) {
342 case ID_TYPE_UID:
343 if ( ! u_filter) {
344 u_filter = talloc_asprintf(memctx, "(&(|"
345 "(sAMAccountType=%d)"
346 "(sAMAccountType=%d)"
347 "(sAMAccountType=%d))(|",
348 ATYPE_NORMAL_ACCOUNT,
349 ATYPE_WORKSTATION_TRUST,
350 ATYPE_INTERDOMAIN_TRUST);
351 }
352 u_filter = talloc_asprintf_append_buffer(u_filter, "(%s=%lu)",
353 ctx->ad_schema->posix_uidnumber_attr,
354 (unsigned long)ids[idx]->xid.id);
355 CHECK_ALLOC_DONE(u_filter);
356 break;
357
358 case ID_TYPE_GID:
359 if ( ! g_filter) {
360 g_filter = talloc_asprintf(memctx, "(&(|"
361 "(sAMAccountType=%d)"
362 "(sAMAccountType=%d))(|",
363 ATYPE_SECURITY_GLOBAL_GROUP,
364 ATYPE_SECURITY_LOCAL_GROUP);
365 }
366 g_filter = talloc_asprintf_append_buffer(g_filter, "(%s=%lu)",
367 ctx->ad_schema->posix_gidnumber_attr,
368 (unsigned long)ids[idx]->xid.id);
369 CHECK_ALLOC_DONE(g_filter);
370 break;
371
372 default:
373 DEBUG(3, ("Error: mapping requested but Unknown ID type\n"));
374 ids[idx]->status = ID_UNKNOWN;
375 continue;
376 }
377 }
378 filter = talloc_asprintf(memctx, "(|");
379 CHECK_ALLOC_DONE(filter);
380 if ( u_filter) {
381 filter = talloc_asprintf_append_buffer(filter, "%s))", u_filter);
382 CHECK_ALLOC_DONE(filter);
383 TALLOC_FREE(u_filter);
384 }
385 if ( g_filter) {
386 filter = talloc_asprintf_append_buffer(filter, "%s))", g_filter);
387 CHECK_ALLOC_DONE(filter);
388 TALLOC_FREE(g_filter);
389 }
390 filter = talloc_asprintf_append_buffer(filter, ")");
391 CHECK_ALLOC_DONE(filter);
392
393 rc = ads_search_retry(ctx->ads, &res, filter, attrs);
394 if (!ADS_ERR_OK(rc)) {
395 DEBUG(1, ("ERROR: ads search returned: %s\n", ads_errstr(rc)));
396 ret = NT_STATUS_UNSUCCESSFUL;
397 goto done;
398 }
399
400 if ( (count = ads_count_replies(ctx->ads, res)) == 0 ) {
401 DEBUG(10, ("No IDs found\n"));
402 }
403
404 entry = res;
405 for (i = 0; (i < count) && entry; i++) {
406 struct dom_sid sid;
407 enum id_type type;
408 struct id_map *map;
409 uint32_t id;
410 uint32_t atype;
411
412 if (i == 0) { /* first entry */
413 entry = ads_first_entry(ctx->ads, entry);
414 } else { /* following ones */
415 entry = ads_next_entry(ctx->ads, entry);
416 }
417
418 if ( !entry ) {
419 DEBUG(2, ("ERROR: Unable to fetch ldap entries from results\n"));
420 break;
421 }
422
423 /* first check if the SID is present */
424 if (!ads_pull_sid(ctx->ads, entry, "objectSid", &sid)) {
425 DEBUG(2, ("Could not retrieve SID from entry\n"));
426 continue;
427 }
428
429 /* get type */
430 if (!ads_pull_uint32(ctx->ads, entry, "sAMAccountType", &atype)) {
431 DEBUG(1, ("could not get SAM account type\n"));
432 continue;
433 }
434
435 switch (atype & 0xF0000000) {
436 case ATYPE_SECURITY_GLOBAL_GROUP:
437 case ATYPE_SECURITY_LOCAL_GROUP:
438 type = ID_TYPE_GID;
439 break;
440 case ATYPE_NORMAL_ACCOUNT:
441 case ATYPE_WORKSTATION_TRUST:
442 case ATYPE_INTERDOMAIN_TRUST:
443 type = ID_TYPE_UID;
444 break;
445 default:
446 DEBUG(1, ("unrecognized SAM account type %08x\n", atype));
447 continue;
448 }
449
450 if (!ads_pull_uint32(ctx->ads, entry, (type==ID_TYPE_UID) ?
451 ctx->ad_schema->posix_uidnumber_attr :
452 ctx->ad_schema->posix_gidnumber_attr,
453 &id))
454 {
455 DEBUG(1, ("Could not get unix ID\n"));
456 continue;
457 }
458
459 if (!idmap_unix_id_is_in_range(id, dom)) {
460 DEBUG(5, ("Requested id (%u) out of range (%u - %u). Filtered!\n",
461 id, dom->low_id, dom->high_id));
462 continue;
463 }
464
465 map = find_map_by_id(&ids[bidx], type, id);
466 if (!map) {
467 DEBUG(2, ("WARNING: couldn't match result with requested ID\n"));
468 continue;
469 }
470
471 sid_copy(map->sid, &sid);
472
473 /* mapped */
474 map->status = ID_MAPPED;
475
476 DEBUG(10, ("Mapped %s -> %lu (%d)\n", sid_string_dbg(map->sid),
477 (unsigned long)map->xid.id,
478 map->xid.type));
479 }
480
481 if (res) {
482 ads_msgfree(ctx->ads, res);
483 }
484
485 if (ids[idx]) { /* still some values to map */
486 goto again;
487 }
488
489 ret = NT_STATUS_OK;
490
491 /* mark all unknown/expired ones as unmapped */
492 for (i = 0; ids[i]; i++) {
493 if (ids[i]->status != ID_MAPPED)
494 ids[i]->status = ID_UNMAPPED;
495 }
496
497 done:
498 talloc_free(memctx);
499 return ret;
500 }
501
502 /************************************************************************
503 ***********************************************************************/
504
505 static NTSTATUS idmap_ad_sids_to_unixids(struct idmap_domain *dom, struct id_map **ids)
506 {
507 NTSTATUS ret;
508 TALLOC_CTX *memctx;
509 struct idmap_ad_context *ctx;
510 ADS_STATUS rc;
511 const char *attrs[] = { "sAMAccountType",
512 "objectSid",
513 NULL, /* attr_uidnumber */
514 NULL, /* attr_gidnumber */
515 NULL };
516 LDAPMessage *res = NULL;
517 LDAPMessage *entry = NULL;
518 char *filter = NULL;
519 int idx = 0;
520 int bidx = 0;
521 int count;
522 int i;
523 char *sidstr;
524
525 /* initialize the status to avoid suprise */
526 for (i = 0; ids[i]; i++) {
527 ids[i]->status = ID_UNKNOWN;
528 }
529
530 /* Only do query if we are online */
531 if (idmap_is_offline()) {
532 return NT_STATUS_FILE_IS_OFFLINE;
533 }
534
535 ctx = talloc_get_type(dom->private_data, struct idmap_ad_context);
536
537 if ( (memctx = talloc_new(ctx)) == NULL ) {
538 DEBUG(0, ("Out of memory!\n"));
539 return NT_STATUS_NO_MEMORY;
540 }
541
542 rc = ad_idmap_cached_connection(dom);
543 if (!ADS_ERR_OK(rc)) {
544 DEBUG(1, ("ADS uninitialized: %s\n", ads_errstr(rc)));
545 ret = NT_STATUS_UNSUCCESSFUL;
546 /* ret = ads_ntstatus(rc); */
547 goto done;
548 }
549
550 if (ctx->ad_schema == NULL) {
551 DEBUG(0, ("haven't got ctx->ad_schema ! \n"));
552 ret = NT_STATUS_UNSUCCESSFUL;
553 goto done;
554 }
555
556 attrs[2] = ctx->ad_schema->posix_uidnumber_attr;
557 attrs[3] = ctx->ad_schema->posix_gidnumber_attr;
558
559 again:
560 filter = talloc_asprintf(memctx, "(&(|"
561 "(sAMAccountType=%d)(sAMAccountType=%d)(sAMAccountType=%d)" /* user account types */
562 "(sAMAccountType=%d)(sAMAccountType=%d)" /* group account types */
563 ")(|",
564 ATYPE_NORMAL_ACCOUNT, ATYPE_WORKSTATION_TRUST, ATYPE_INTERDOMAIN_TRUST,
565 ATYPE_SECURITY_GLOBAL_GROUP, ATYPE_SECURITY_LOCAL_GROUP);
566
567 CHECK_ALLOC_DONE(filter);
568
569 bidx = idx;
570 for (i = 0; (i < IDMAP_AD_MAX_IDS) && ids[idx]; i++, idx++) {
571
572 ids[idx]->status = ID_UNKNOWN;
573
574 sidstr = ldap_encode_ndr_dom_sid(talloc_tos(), ids[idx]->sid);
575 filter = talloc_asprintf_append_buffer(filter, "(objectSid=%s)", sidstr);
576
577 TALLOC_FREE(sidstr);
578 CHECK_ALLOC_DONE(filter);
579 }
580 filter = talloc_asprintf_append_buffer(filter, "))");
581 CHECK_ALLOC_DONE(filter);
582 DEBUG(10, ("Filter: [%s]\n", filter));
583
584 rc = ads_search_retry(ctx->ads, &res, filter, attrs);
585 if (!ADS_ERR_OK(rc)) {
586 DEBUG(1, ("ERROR: ads search returned: %s\n", ads_errstr(rc)));
587 ret = NT_STATUS_UNSUCCESSFUL;
588 goto done;
589 }
590
591 if ( (count = ads_count_replies(ctx->ads, res)) == 0 ) {
592 DEBUG(10, ("No IDs found\n"));
593 }
594
595 entry = res;
596 for (i = 0; (i < count) && entry; i++) {
597 struct dom_sid sid;
598 enum id_type type;
599 struct id_map *map;
600 uint32_t id;
601 uint32_t atype;
602
603 if (i == 0) { /* first entry */
604 entry = ads_first_entry(ctx->ads, entry);
605 } else { /* following ones */
606 entry = ads_next_entry(ctx->ads, entry);
607 }
608
609 if ( !entry ) {
610 DEBUG(2, ("ERROR: Unable to fetch ldap entries from results\n"));
611 break;
612 }
613
614 /* first check if the SID is present */
615 if (!ads_pull_sid(ctx->ads, entry, "objectSid", &sid)) {
616 DEBUG(2, ("Could not retrieve SID from entry\n"));
617 continue;
618 }
619
620 map = find_map_by_sid(&ids[bidx], &sid);
621 if (!map) {
622 DEBUG(2, ("WARNING: couldn't match result with requested SID\n"));
623 continue;
624 }
625
626 /* get type */
627 if (!ads_pull_uint32(ctx->ads, entry, "sAMAccountType", &atype)) {
628 DEBUG(1, ("could not get SAM account type\n"));
629 continue;
630 }
631
632 switch (atype & 0xF0000000) {
633 case ATYPE_SECURITY_GLOBAL_GROUP:
634 case ATYPE_SECURITY_LOCAL_GROUP:
635 type = ID_TYPE_GID;
636 break;
637 case ATYPE_NORMAL_ACCOUNT:
638 case ATYPE_WORKSTATION_TRUST:
639 case ATYPE_INTERDOMAIN_TRUST:
640 type = ID_TYPE_UID;
641 break;
642 default:
643 DEBUG(1, ("unrecognized SAM account type %08x\n", atype));
644 continue;
645 }
646
647 if (!ads_pull_uint32(ctx->ads, entry, (type==ID_TYPE_UID) ?
648 ctx->ad_schema->posix_uidnumber_attr :
649 ctx->ad_schema->posix_gidnumber_attr,
650 &id))
651 {
652 DEBUG(1, ("Could not get unix ID\n"));
653 continue;
654 }
655 if (!idmap_unix_id_is_in_range(id, dom)) {
656 DEBUG(5, ("Requested id (%u) out of range (%u - %u). Filtered!\n",
657 id, dom->low_id, dom->high_id));
658 continue;
659 }
660
661 /* mapped */
662 map->xid.type = type;
663 map->xid.id = id;
664 map->status = ID_MAPPED;
665
666 DEBUG(10, ("Mapped %s -> %lu (%d)\n", sid_string_dbg(map->sid),
667 (unsigned long)map->xid.id,
668 map->xid.type));
669 }
670
671 if (res) {
672 ads_msgfree(ctx->ads, res);
673 }
674
675 if (ids[idx]) { /* still some values to map */
676 goto again;
677 }
678
679 ret = NT_STATUS_OK;
680
681 /* mark all unknown/expired ones as unmapped */
682 for (i = 0; ids[i]; i++) {
683 if (ids[i]->status != ID_MAPPED)
684 ids[i]->status = ID_UNMAPPED;
685 }
686
687 done:
688 talloc_free(memctx);
689 return ret;
690 }
691
692 /*
693 * nss_info_{sfu,sfu20,rfc2307}
694 */
695
696 /************************************************************************
697 Initialize the {sfu,sfu20,rfc2307} state
698 ***********************************************************************/
699
700 static const char *wb_posix_map_unknown_string = "WB_POSIX_MAP_UNKNOWN";
701 static const char *wb_posix_map_template_string = "WB_POSIX_MAP_TEMPLATE";
702 static const char *wb_posix_map_sfu_string = "WB_POSIX_MAP_SFU";
703 static const char *wb_posix_map_sfu20_string = "WB_POSIX_MAP_SFU20";
704 static const char *wb_posix_map_rfc2307_string = "WB_POSIX_MAP_RFC2307";
705 static const char *wb_posix_map_unixinfo_string = "WB_POSIX_MAP_UNIXINFO";
706
707 static const char *ad_map_type_string(enum wb_posix_mapping map_type)
708 {
709 switch (map_type) {
710 case WB_POSIX_MAP_TEMPLATE:
711 return wb_posix_map_template_string;
712 case WB_POSIX_MAP_SFU:
713 return wb_posix_map_sfu_string;
714 case WB_POSIX_MAP_SFU20:
715 return wb_posix_map_sfu20_string;
716 case WB_POSIX_MAP_RFC2307:
717 return wb_posix_map_rfc2307_string;
718 case WB_POSIX_MAP_UNIXINFO:
719 return wb_posix_map_unixinfo_string;
720 default:
721 return wb_posix_map_unknown_string;
722 }
723 }
724
725 static NTSTATUS nss_ad_generic_init(struct nss_domain_entry *e,
726 enum wb_posix_mapping new_ad_map_type)
727 {
728 struct idmap_domain *dom;
729 struct idmap_ad_context *ctx;
730
731 if (e->state != NULL) {
732 dom = talloc_get_type(e->state, struct idmap_domain);
733 } else {
734 dom = talloc_zero(e, struct idmap_domain);
735 if (dom == NULL) {
736 DEBUG(0, ("Out of memory!\n"));
737 return NT_STATUS_NO_MEMORY;
738 }
739 e->state = dom;
740 }
741
742 if (e->domain != NULL) {
743 dom->name = talloc_strdup(dom, e->domain);
744 if (dom->name == NULL) {
745 DEBUG(0, ("Out of memory!\n"));
746 return NT_STATUS_NO_MEMORY;
747 }
748 }
749
750 if (dom->private_data != NULL) {
751 ctx = talloc_get_type(dom->private_data,
752 struct idmap_ad_context);
753 } else {
754 ctx = talloc_zero(dom, struct idmap_ad_context);
755 if (ctx == NULL) {
756 DEBUG(0, ("Out of memory!\n"));
757 return NT_STATUS_NO_MEMORY;
758 }
759 ctx->ad_map_type = WB_POSIX_MAP_RFC2307;
760 dom->private_data = ctx;
761 }
762
763 if ((ctx->ad_map_type != WB_POSIX_MAP_UNKNOWN) &&
764 (ctx->ad_map_type != new_ad_map_type))
765 {
766 DEBUG(2, ("nss_ad_generic_init: "
767 "Warning: overriding previously set posix map type "
768 "%s for domain %s with map type %s.\n",
769 ad_map_type_string(ctx->ad_map_type),
770 dom->name,
771 ad_map_type_string(new_ad_map_type)));
772 }
773
774 ctx->ad_map_type = new_ad_map_type;
775
776 return NT_STATUS_OK;
777 }
778
779 static NTSTATUS nss_sfu_init( struct nss_domain_entry *e )
780 {
781 return nss_ad_generic_init(e, WB_POSIX_MAP_SFU);
782 }
783
784 static NTSTATUS nss_sfu20_init( struct nss_domain_entry *e )
785 {
786 return nss_ad_generic_init(e, WB_POSIX_MAP_SFU20);
787 }
788
789 static NTSTATUS nss_rfc2307_init( struct nss_domain_entry *e )
790 {
791 return nss_ad_generic_init(e, WB_POSIX_MAP_RFC2307);
792 }
793
794
795 /************************************************************************
796 ***********************************************************************/
797
798 static NTSTATUS nss_ad_get_info( struct nss_domain_entry *e,
799 const struct dom_sid *sid,
800 TALLOC_CTX *mem_ctx,
801 const char **homedir,
802 const char **shell,
803 const char **gecos,
804 uint32 *gid )
805 {
806 const char *attrs[] = {NULL, /* attr_homedir */
807 NULL, /* attr_shell */
808 NULL, /* attr_gecos */
809 NULL, /* attr_gidnumber */
810 NULL };
811 char *filter = NULL;
812 LDAPMessage *msg_internal = NULL;
813 ADS_STATUS ads_status = ADS_ERROR_NT(NT_STATUS_UNSUCCESSFUL);
814 NTSTATUS nt_status = NT_STATUS_UNSUCCESSFUL;
815 char *sidstr = NULL;
816 struct idmap_domain *dom;
817 struct idmap_ad_context *ctx;
818
819 DEBUG(10, ("nss_ad_get_info called for sid [%s] in domain '%s'\n",
820 sid_string_dbg(sid), e->domain?e->domain:"NULL"));
821
822 /* Only do query if we are online */
823 if (idmap_is_offline()) {
824 return NT_STATUS_FILE_IS_OFFLINE;
825 }
826
827 dom = talloc_get_type(e->state, struct idmap_domain);
828 ctx = talloc_get_type(dom->private_data, struct idmap_ad_context);
829
830 ads_status = ad_idmap_cached_connection(dom);
831 if (!ADS_ERR_OK(ads_status)) {
832 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
833 }
834
835 if (!ctx->ad_schema) {
836 DEBUG(10, ("nss_ad_get_info: no ad_schema configured!\n"));
837 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
838 }
839
840 if (!sid || !homedir || !shell || !gecos) {
841 return NT_STATUS_INVALID_PARAMETER;
842 }
843
844 /* Have to do our own query */
845
846 DEBUG(10, ("nss_ad_get_info: no ads connection given, doing our "
847 "own query\n"));
848
849 attrs[0] = ctx->ad_schema->posix_homedir_attr;
850 attrs[1] = ctx->ad_schema->posix_shell_attr;
851 attrs[2] = ctx->ad_schema->posix_gecos_attr;
852 attrs[3] = ctx->ad_schema->posix_gidnumber_attr;
853
854 sidstr = ldap_encode_ndr_dom_sid(mem_ctx, sid);
855 filter = talloc_asprintf(mem_ctx, "(objectSid=%s)", sidstr);
856 TALLOC_FREE(sidstr);
857
858 if (!filter) {
859 nt_status = NT_STATUS_NO_MEMORY;
860 goto done;
861 }
862
863 ads_status = ads_search_retry(ctx->ads, &msg_internal, filter, attrs);
864 if (!ADS_ERR_OK(ads_status)) {
865 nt_status = ads_ntstatus(ads_status);
866 goto done;
867 }
868
869 *homedir = ads_pull_string(ctx->ads, mem_ctx, msg_internal, ctx->ad_schema->posix_homedir_attr);
870 *shell = ads_pull_string(ctx->ads, mem_ctx, msg_internal, ctx->ad_schema->posix_shell_attr);
871 *gecos = ads_pull_string(ctx->ads, mem_ctx, msg_internal, ctx->ad_schema->posix_gecos_attr);
872
873 if (gid) {
874 if (!ads_pull_uint32(ctx->ads, msg_internal, ctx->ad_schema->posix_gidnumber_attr, gid))
875 *gid = (uint32)-1;
876 }
877
878 nt_status = NT_STATUS_OK;
879
880 done:
881 if (msg_internal) {
882 ads_msgfree(ctx->ads, msg_internal);
883 }
884
885 return nt_status;
886 }
887
888 /**********************************************************************
889 *********************************************************************/
890
891 static NTSTATUS nss_ad_map_to_alias(TALLOC_CTX *mem_ctx,
892 struct nss_domain_entry *e,
893 const char *name,
894 char **alias)
895 {
896 const char *attrs[] = {NULL, /* attr_uid */
897 NULL };
898 char *filter = NULL;
899 LDAPMessage *msg = NULL;
900 ADS_STATUS ads_status = ADS_ERROR_NT(NT_STATUS_UNSUCCESSFUL);
901 NTSTATUS nt_status = NT_STATUS_UNSUCCESSFUL;
902 struct idmap_domain *dom;
903 struct idmap_ad_context *ctx = NULL;
904
905 /* Check incoming parameters */
906
907 if ( !e || !e->domain || !name || !*alias) {
908 nt_status = NT_STATUS_INVALID_PARAMETER;
909 goto done;
910 }
911
912 /* Only do query if we are online */
913
914 if (idmap_is_offline()) {
915 nt_status = NT_STATUS_FILE_IS_OFFLINE;
916 goto done;
917 }
918
919 dom = talloc_get_type(e->state, struct idmap_domain);
920 ctx = talloc_get_type(dom->private_data, struct idmap_ad_context);
921
922 ads_status = ad_idmap_cached_connection(dom);
923 if (!ADS_ERR_OK(ads_status)) {
924 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
925 }
926
927 if (!ctx->ad_schema) {
928 nt_status = NT_STATUS_OBJECT_PATH_NOT_FOUND;
929 goto done;
930 }
931
932 attrs[0] = ctx->ad_schema->posix_uid_attr;
933
934 filter = talloc_asprintf(mem_ctx,
935 "(sAMAccountName=%s)",
936 name);
937 if (!filter) {
938 nt_status = NT_STATUS_NO_MEMORY;
939 goto done;
940 }
941
942 ads_status = ads_search_retry(ctx->ads, &msg, filter, attrs);
943 if (!ADS_ERR_OK(ads_status)) {
944 nt_status = ads_ntstatus(ads_status);
945 goto done;
946 }
947
948 *alias = ads_pull_string(ctx->ads, mem_ctx, msg, ctx->ad_schema->posix_uid_attr);
949
950 if (!*alias) {
951 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
952 }
953
954 nt_status = NT_STATUS_OK;
955
956 done:
957 if (filter) {
958 talloc_destroy(filter);
959 }
960 if (msg) {
961 ads_msgfree(ctx->ads, msg);
962 }
963
964 return nt_status;
965 }
966
967 /**********************************************************************
968 *********************************************************************/
969
970 static NTSTATUS nss_ad_map_from_alias( TALLOC_CTX *mem_ctx,
971 struct nss_domain_entry *e,
972 const char *alias,
973 char **name )
974 {
975 const char *attrs[] = {"sAMAccountName",
976 NULL };
977 char *filter = NULL;
978 LDAPMessage *msg = NULL;
979 ADS_STATUS ads_status = ADS_ERROR_NT(NT_STATUS_UNSUCCESSFUL);
980 NTSTATUS nt_status = NT_STATUS_UNSUCCESSFUL;
981 char *username;
982 struct idmap_domain *dom;
983 struct idmap_ad_context *ctx = NULL;
984
985 /* Check incoming parameters */
986
987 if ( !alias || !name) {
988 nt_status = NT_STATUS_INVALID_PARAMETER;
989 goto done;
990 }
991
992 /* Only do query if we are online */
993
994 if (idmap_is_offline()) {
995 nt_status = NT_STATUS_FILE_IS_OFFLINE;
996 goto done;
997 }
998
999 dom = talloc_get_type(e->state, struct idmap_domain);
1000 ctx = talloc_get_type(dom->private_data, struct idmap_ad_context);
1001
1002 ads_status = ad_idmap_cached_connection(dom);
1003 if (!ADS_ERR_OK(ads_status)) {
1004 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
1005 }
1006
1007 if (!ctx->ad_schema) {
1008 nt_status = NT_STATUS_OBJECT_PATH_NOT_FOUND;
1009 goto done;
1010 }
1011
1012 filter = talloc_asprintf(mem_ctx,
1013 "(%s=%s)",
1014 ctx->ad_schema->posix_uid_attr,
1015 alias);
1016 if (!filter) {
1017 nt_status = NT_STATUS_NO_MEMORY;
1018 goto done;
1019 }
1020
1021 ads_status = ads_search_retry(ctx->ads, &msg, filter, attrs);
1022 if (!ADS_ERR_OK(ads_status)) {
1023 nt_status = ads_ntstatus(ads_status);
1024 goto done;
1025 }
1026
1027 username = ads_pull_string(ctx->ads, mem_ctx, msg,
1028 "sAMAccountName");
1029 if (!username) {
1030 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
1031 }
1032
1033 *name = talloc_asprintf(mem_ctx, "%s\\%s",
1034 lp_workgroup(),
1035 username);
1036 if (!*name) {
1037 nt_status = NT_STATUS_NO_MEMORY;
1038 goto done;
1039 }
1040
1041 nt_status = NT_STATUS_OK;
1042
1043 done:
1044 if (filter) {
1045 talloc_destroy(filter);
1046 }
1047 if (msg) {
1048 ads_msgfree(ctx->ads, msg);
1049 }
1050
1051 return nt_status;
1052 }
1053
1054 /************************************************************************
1055 Function dispatch tables for the idmap and nss plugins
1056 ***********************************************************************/
1057
1058 static struct idmap_methods ad_methods = {
1059 .init = idmap_ad_initialize,
1060 .unixids_to_sids = idmap_ad_unixids_to_sids,
1061 .sids_to_unixids = idmap_ad_sids_to_unixids,
1062 };
1063
1064 /* The SFU and RFC2307 NSS plugins share everything but the init
1065 function which sets the intended schema model to use */
1066
1067 static struct nss_info_methods nss_rfc2307_methods = {
1068 .init = nss_rfc2307_init,
1069 .get_nss_info = nss_ad_get_info,
1070 .map_to_alias = nss_ad_map_to_alias,
1071 .map_from_alias = nss_ad_map_from_alias,
1072 };
1073
1074 static struct nss_info_methods nss_sfu_methods = {
1075 .init = nss_sfu_init,
1076 .get_nss_info = nss_ad_get_info,
1077 .map_to_alias = nss_ad_map_to_alias,
1078 .map_from_alias = nss_ad_map_from_alias,
1079 };
1080
1081 static struct nss_info_methods nss_sfu20_methods = {
1082 .init = nss_sfu20_init,
1083 .get_nss_info = nss_ad_get_info,
1084 .map_to_alias = nss_ad_map_to_alias,
1085 .map_from_alias = nss_ad_map_from_alias,
1086 };
1087
1088
1089
1090 /************************************************************************
1091 Initialize the plugins
1092 ***********************************************************************/
1093
1094 NTSTATUS samba_init_module(void)
1095 {
1096 static NTSTATUS status_idmap_ad = NT_STATUS_UNSUCCESSFUL;
1097 static NTSTATUS status_nss_rfc2307 = NT_STATUS_UNSUCCESSFUL;
1098 static NTSTATUS status_nss_sfu = NT_STATUS_UNSUCCESSFUL;
1099 static NTSTATUS status_nss_sfu20 = NT_STATUS_UNSUCCESSFUL;
1100
1101 /* Always register the AD method first in order to get the
1102 idmap_domain interface called */
1103
1104 if ( !NT_STATUS_IS_OK(status_idmap_ad) ) {
1105 status_idmap_ad = smb_register_idmap(SMB_IDMAP_INTERFACE_VERSION,
1106 "ad", &ad_methods);
1107 if ( !NT_STATUS_IS_OK(status_idmap_ad) )
1108 return status_idmap_ad;
1109 }
1110
1111 if ( !NT_STATUS_IS_OK( status_nss_rfc2307 ) ) {
1112 status_nss_rfc2307 = smb_register_idmap_nss(SMB_NSS_INFO_INTERFACE_VERSION,
1113 "rfc2307", &nss_rfc2307_methods );
1114 if ( !NT_STATUS_IS_OK(status_nss_rfc2307) )
1115 return status_nss_rfc2307;
1116 }
1117
1118 if ( !NT_STATUS_IS_OK( status_nss_sfu ) ) {
1119 status_nss_sfu = smb_register_idmap_nss(SMB_NSS_INFO_INTERFACE_VERSION,
1120 "sfu", &nss_sfu_methods );
1121 if ( !NT_STATUS_IS_OK(status_nss_sfu) )
1122 return status_nss_sfu;
1123 }
1124
1125 if ( !NT_STATUS_IS_OK( status_nss_sfu20 ) ) {
1126 status_nss_sfu20 = smb_register_idmap_nss(SMB_NSS_INFO_INTERFACE_VERSION,
1127 "sfu20", &nss_sfu20_methods );
1128 if ( !NT_STATUS_IS_OK(status_nss_sfu20) )
1129 return status_nss_sfu20;
1130 }
1131
1132 return NT_STATUS_OK;
1133 }
1134
reg import