2 Unix SMB/CIFS implementation.
4 Winbind cache backend functions
6 Copyright (C) Andrew Tridgell 2001
7 Copyright (C) Gerald Carter 2003
8 Copyright (C) Volker Lendecke 2005
11 This program is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 2 of the License, or
14 (at your option) any later version.
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with this program; if not, write to the Free Software
23 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
29 extern BOOL opt_nocache
;
30 extern struct winbindd_methods msrpc_methods
;
31 extern struct winbindd_methods ads_methods
;
32 extern BOOL opt_dual_daemon
;
33 extern BOOL background_process
;
36 #define DBGC_CLASS DBGC_WINBIND
38 struct winbind_cache
{
44 uint32 sequence_number
;
49 #define WINBINDD_MAX_CACHE_SIZE (50*1024*1024)
51 static struct winbind_cache
*wcache
;
54 void wcache_flush_cache(void)
59 tdb_close(wcache
->tdb
);
65 wcache
->tdb
= tdb_open_log(lock_path("winbindd_cache.tdb"), 5000,
66 TDB_CLEAR_IF_FIRST
, O_RDWR
|O_CREAT
, 0600);
69 DEBUG(0,("Failed to open winbindd_cache.tdb!\n"));
71 DEBUG(10,("wcache_flush_cache success\n"));
74 void winbindd_check_cache_size(time_t t
)
76 static time_t last_check_time
;
79 if (last_check_time
== (time_t)0)
82 if (t
- last_check_time
< 60 && t
- last_check_time
> 0)
85 if (wcache
== NULL
|| wcache
->tdb
== NULL
) {
86 DEBUG(0, ("Unable to check size of tdb cache - cache not open !\n"));
90 if (fstat(wcache
->tdb
->fd
, &st
) == -1) {
91 DEBUG(0, ("Unable to check size of tdb cache %s!\n", strerror(errno
) ));
95 if (st
.st_size
> WINBINDD_MAX_CACHE_SIZE
) {
96 DEBUG(10,("flushing cache due to size (%lu) > (%lu)\n",
97 (unsigned long)st
.st_size
,
98 (unsigned long)WINBINDD_MAX_CACHE_SIZE
));
103 /* get the winbind_cache structure */
104 static struct winbind_cache
*get_cache(struct winbindd_domain
*domain
)
106 struct winbind_cache
*ret
= wcache
;
108 if (!domain
->backend
) {
109 switch (lp_security()) {
112 /* always obey the lp_security parameter for our domain */
113 if (domain
->primary
) {
114 domain
->backend
= &ads_methods
;
118 /* only use ADS for native modes at the momment.
119 The problem is the correct detection of mixed
120 mode domains from NT4 BDC's --jerry */
122 if ( domain
->native_mode
) {
123 DEBUG(5,("get_cache: Setting ADS methods for domain %s\n",
125 domain
->backend
= &ads_methods
;
133 DEBUG(5,("get_cache: Setting MS-RPC methods for domain %s\n",
135 domain
->backend
= &msrpc_methods
;
142 ret
= SMB_XMALLOC_P(struct winbind_cache
);
146 wcache_flush_cache();
152 free a centry structure
154 static void centry_free(struct cache_entry
*centry
)
158 SAFE_FREE(centry
->data
);
163 pull a uint32 from a cache entry
165 static uint32
centry_uint32(struct cache_entry
*centry
)
168 if (centry
->len
- centry
->ofs
< 4) {
169 DEBUG(0,("centry corruption? needed 4 bytes, have %d\n",
170 centry
->len
- centry
->ofs
));
171 smb_panic("centry_uint32");
173 ret
= IVAL(centry
->data
, centry
->ofs
);
179 pull a uint8 from a cache entry
181 static uint8
centry_uint8(struct cache_entry
*centry
)
184 if (centry
->len
- centry
->ofs
< 1) {
185 DEBUG(0,("centry corruption? needed 1 bytes, have %d\n",
186 centry
->len
- centry
->ofs
));
187 smb_panic("centry_uint32");
189 ret
= CVAL(centry
->data
, centry
->ofs
);
194 /* pull a string from a cache entry, using the supplied
197 static char *centry_string(struct cache_entry
*centry
, TALLOC_CTX
*mem_ctx
)
202 len
= centry_uint8(centry
);
205 /* a deliberate NULL string */
209 if (centry
->len
- centry
->ofs
< len
) {
210 DEBUG(0,("centry corruption? needed %d bytes, have %d\n",
211 len
, centry
->len
- centry
->ofs
));
212 smb_panic("centry_string");
215 ret
= TALLOC(mem_ctx
, len
+1);
217 smb_panic("centry_string out of memory\n");
219 memcpy(ret
,centry
->data
+ centry
->ofs
, len
);
225 /* pull a string from a cache entry, using the supplied
228 static DOM_SID
*centry_sid(struct cache_entry
*centry
, TALLOC_CTX
*mem_ctx
)
233 sid
= TALLOC_P(mem_ctx
, DOM_SID
);
237 sid_string
= centry_string(centry
, mem_ctx
);
238 if (!string_to_sid(sid
, sid_string
)) {
244 /* the server is considered down if it can't give us a sequence number */
245 static BOOL
wcache_server_down(struct winbindd_domain
*domain
)
252 ret
= (domain
->sequence_number
== DOM_SEQUENCE_NONE
);
255 DEBUG(10,("wcache_server_down: server for Domain %s down\n",
260 static NTSTATUS
fetch_cache_seqnum( struct winbindd_domain
*domain
, time_t now
)
267 DEBUG(10,("fetch_cache_seqnum: tdb == NULL\n"));
268 return NT_STATUS_UNSUCCESSFUL
;
271 fstr_sprintf( key
, "SEQNUM/%s", domain
->name
);
273 data
= tdb_fetch_bystring( wcache
->tdb
, key
);
274 if ( !data
.dptr
|| data
.dsize
!=8 ) {
275 DEBUG(10,("fetch_cache_seqnum: invalid data size key [%s]\n", key
));
276 return NT_STATUS_UNSUCCESSFUL
;
279 domain
->sequence_number
= IVAL(data
.dptr
, 0);
280 domain
->last_seq_check
= IVAL(data
.dptr
, 4);
282 SAFE_FREE(data
.dptr
);
284 /* have we expired? */
286 time_diff
= now
- domain
->last_seq_check
;
287 if ( time_diff
> lp_winbind_cache_time() ) {
288 DEBUG(10,("fetch_cache_seqnum: timeout [%s][%u @ %u]\n",
289 domain
->name
, domain
->sequence_number
,
290 (uint32
)domain
->last_seq_check
));
291 return NT_STATUS_UNSUCCESSFUL
;
294 DEBUG(10,("fetch_cache_seqnum: success [%s][%u @ %u]\n",
295 domain
->name
, domain
->sequence_number
,
296 (uint32
)domain
->last_seq_check
));
301 static NTSTATUS
store_cache_seqnum( struct winbindd_domain
*domain
)
308 DEBUG(10,("store_cache_seqnum: tdb == NULL\n"));
309 return NT_STATUS_UNSUCCESSFUL
;
312 fstr_sprintf( key_str
, "SEQNUM/%s", domain
->name
);
314 key
.dsize
= strlen(key_str
)+1;
316 SIVAL(buf
, 0, domain
->sequence_number
);
317 SIVAL(buf
, 4, domain
->last_seq_check
);
321 if ( tdb_store( wcache
->tdb
, key
, data
, TDB_REPLACE
) == -1 ) {
322 DEBUG(10,("store_cache_seqnum: tdb_store fail key [%s]\n", key_str
));
323 return NT_STATUS_UNSUCCESSFUL
;
326 DEBUG(10,("store_cache_seqnum: success [%s][%u @ %u]\n",
327 domain
->name
, domain
->sequence_number
,
328 (uint32
)domain
->last_seq_check
));
334 refresh the domain sequence number. If force is True
335 then always refresh it, no matter how recently we fetched it
338 static void refresh_sequence_number(struct winbindd_domain
*domain
, BOOL force
)
342 time_t t
= time(NULL
);
343 unsigned cache_time
= lp_winbind_cache_time();
347 #if 0 /* JERRY -- disable as the default cache time is now 5 minutes */
348 /* trying to reconnect is expensive, don't do it too often */
349 if (domain
->sequence_number
== DOM_SEQUENCE_NONE
) {
354 time_diff
= t
- domain
->last_seq_check
;
356 /* see if we have to refetch the domain sequence number */
357 if (!force
&& (time_diff
< cache_time
)) {
358 DEBUG(10, ("refresh_sequence_number: %s time ok\n", domain
->name
));
362 /* try to get the sequence number from the tdb cache first */
363 /* this will update the timestamp as well */
365 status
= fetch_cache_seqnum( domain
, t
);
366 if ( NT_STATUS_IS_OK(status
) )
369 /* important! make sure that we know if this is a native
370 mode domain or not */
372 if ( !domain
->initialized
)
373 set_dc_type_and_flags( domain
);
375 status
= domain
->backend
->sequence_number(domain
, &domain
->sequence_number
);
377 if (!NT_STATUS_IS_OK(status
)) {
378 domain
->sequence_number
= DOM_SEQUENCE_NONE
;
381 domain
->last_status
= status
;
382 domain
->last_seq_check
= time(NULL
);
384 /* save the new sequence number ni the cache */
385 store_cache_seqnum( domain
);
388 DEBUG(10, ("refresh_sequence_number: %s seq number is now %d\n",
389 domain
->name
, domain
->sequence_number
));
395 decide if a cache entry has expired
397 static BOOL
centry_expired(struct winbindd_domain
*domain
, const char *keystr
, struct cache_entry
*centry
)
399 /* if the server is OK and our cache entry came from when it was down then
400 the entry is invalid */
401 if (domain
->sequence_number
!= DOM_SEQUENCE_NONE
&&
402 centry
->sequence_number
== DOM_SEQUENCE_NONE
) {
403 DEBUG(10,("centry_expired: Key %s for domain %s invalid sequence.\n",
404 keystr
, domain
->name
));
408 /* if the server is down or the cache entry is not older than the
409 current sequence number then it is OK */
410 if (wcache_server_down(domain
) ||
411 centry
->sequence_number
== domain
->sequence_number
) {
412 DEBUG(10,("centry_expired: Key %s for domain %s is good.\n",
413 keystr
, domain
->name
));
417 DEBUG(10,("centry_expired: Key %s for domain %s expired\n",
418 keystr
, domain
->name
));
425 fetch an entry from the cache, with a varargs key. auto-fetch the sequence
426 number and return status
428 static struct cache_entry
*wcache_fetch(struct winbind_cache
*cache
,
429 struct winbindd_domain
*domain
,
430 const char *format
, ...) PRINTF_ATTRIBUTE(3,4);
431 static struct cache_entry
*wcache_fetch(struct winbind_cache
*cache
,
432 struct winbindd_domain
*domain
,
433 const char *format
, ...)
438 struct cache_entry
*centry
;
441 refresh_sequence_number(domain
, False
);
443 va_start(ap
, format
);
444 smb_xvasprintf(&kstr
, format
, ap
);
448 key
.dsize
= strlen(kstr
);
449 data
= tdb_fetch(wcache
->tdb
, key
);
456 centry
= SMB_XMALLOC_P(struct cache_entry
);
457 centry
->data
= (unsigned char *)data
.dptr
;
458 centry
->len
= data
.dsize
;
461 if (centry
->len
< 8) {
462 /* huh? corrupt cache? */
463 DEBUG(10,("wcache_fetch: Corrupt cache for key %s domain %s (len < 8) ?\n",
464 kstr
, domain
->name
));
470 centry
->status
= NT_STATUS(centry_uint32(centry
));
471 centry
->sequence_number
= centry_uint32(centry
);
473 if (centry_expired(domain
, kstr
, centry
)) {
475 DEBUG(10,("wcache_fetch: entry %s expired for domain %s\n",
476 kstr
, domain
->name
));
478 if (opt_dual_daemon
) {
479 background_process
= True
;
480 DEBUG(10,("wcache_fetch: background processing expired entry %s for domain %s\n",
481 kstr
, domain
->name
));
489 DEBUG(10,("wcache_fetch: returning entry %s for domain %s\n",
490 kstr
, domain
->name
));
497 make sure we have at least len bytes available in a centry
499 static void centry_expand(struct cache_entry
*centry
, uint32 len
)
502 if (centry
->len
- centry
->ofs
>= len
)
505 p
= SMB_REALLOC(centry
->data
, centry
->len
);
507 DEBUG(0,("out of memory: needed %d bytes in centry_expand\n", centry
->len
));
508 smb_panic("out of memory in centry_expand");
514 push a uint32 into a centry
516 static void centry_put_uint32(struct cache_entry
*centry
, uint32 v
)
518 centry_expand(centry
, 4);
519 SIVAL(centry
->data
, centry
->ofs
, v
);
524 push a uint8 into a centry
526 static void centry_put_uint8(struct cache_entry
*centry
, uint8 v
)
528 centry_expand(centry
, 1);
529 SCVAL(centry
->data
, centry
->ofs
, v
);
534 push a string into a centry
536 static void centry_put_string(struct cache_entry
*centry
, const char *s
)
541 /* null strings are marked as len 0xFFFF */
542 centry_put_uint8(centry
, 0xFF);
547 /* can't handle more than 254 char strings. Truncating is probably best */
550 centry_put_uint8(centry
, len
);
551 centry_expand(centry
, len
);
552 memcpy(centry
->data
+ centry
->ofs
, s
, len
);
556 static void centry_put_sid(struct cache_entry
*centry
, const DOM_SID
*sid
)
559 centry_put_string(centry
, sid_to_string(sid_string
, sid
));
563 start a centry for output. When finished, call centry_end()
565 struct cache_entry
*centry_start(struct winbindd_domain
*domain
, NTSTATUS status
)
567 struct cache_entry
*centry
;
572 centry
= SMB_XMALLOC_P(struct cache_entry
);
574 centry
->len
= 8192; /* reasonable default */
575 centry
->data
= SMB_XMALLOC_ARRAY(char, centry
->len
);
577 centry
->sequence_number
= domain
->sequence_number
;
578 centry_put_uint32(centry
, NT_STATUS_V(status
));
579 centry_put_uint32(centry
, centry
->sequence_number
);
584 finish a centry and write it to the tdb
586 static void centry_end(struct cache_entry
*centry
, const char *format
, ...) PRINTF_ATTRIBUTE(2,3);
587 static void centry_end(struct cache_entry
*centry
, const char *format
, ...)
593 va_start(ap
, format
);
594 smb_xvasprintf(&kstr
, format
, ap
);
598 key
.dsize
= strlen(kstr
);
599 data
.dptr
= (char *)centry
->data
;
600 data
.dsize
= centry
->ofs
;
602 tdb_store(wcache
->tdb
, key
, data
, TDB_REPLACE
);
606 static void wcache_save_name_to_sid(struct winbindd_domain
*domain
,
607 NTSTATUS status
, const char *domain_name
,
608 const char *name
, const DOM_SID
*sid
,
609 enum SID_NAME_USE type
)
611 struct cache_entry
*centry
;
614 centry
= centry_start(domain
, status
);
617 centry_put_uint32(centry
, type
);
618 centry_put_sid(centry
, sid
);
619 fstrcpy(uname
, name
);
621 centry_end(centry
, "NS/%s/%s", domain_name
, uname
);
622 DEBUG(10,("wcache_save_name_to_sid: %s -> %s\n", uname
,
623 sid_string_static(sid
)));
627 static void wcache_save_sid_to_name(struct winbindd_domain
*domain
, NTSTATUS status
,
628 const DOM_SID
*sid
, const char *domain_name
, const char *name
, enum SID_NAME_USE type
)
630 struct cache_entry
*centry
;
633 centry
= centry_start(domain
, status
);
636 if (NT_STATUS_IS_OK(status
)) {
637 centry_put_uint32(centry
, type
);
638 centry_put_string(centry
, domain_name
);
639 centry_put_string(centry
, name
);
641 centry_end(centry
, "SN/%s", sid_to_string(sid_string
, sid
));
642 DEBUG(10,("wcache_save_sid_to_name: %s -> %s\n", sid_string
, name
));
647 static void wcache_save_user(struct winbindd_domain
*domain
, NTSTATUS status
, WINBIND_USERINFO
*info
)
649 struct cache_entry
*centry
;
652 centry
= centry_start(domain
, status
);
655 centry_put_string(centry
, info
->acct_name
);
656 centry_put_string(centry
, info
->full_name
);
657 centry_put_sid(centry
, info
->user_sid
);
658 centry_put_sid(centry
, info
->group_sid
);
659 centry_end(centry
, "U/%s", sid_to_string(sid_string
, info
->user_sid
));
660 DEBUG(10,("wcache_save_user: %s (acct_name %s)\n", sid_string
, info
->acct_name
));
665 /* Query display info. This is the basic user list fn */
666 static NTSTATUS
query_user_list(struct winbindd_domain
*domain
,
669 WINBIND_USERINFO
**info
)
671 struct winbind_cache
*cache
= get_cache(domain
);
672 struct cache_entry
*centry
= NULL
;
674 unsigned int i
, retry
;
679 centry
= wcache_fetch(cache
, domain
, "UL/%s", domain
->name
);
683 *num_entries
= centry_uint32(centry
);
685 if (*num_entries
== 0)
688 (*info
) = TALLOC_ARRAY(mem_ctx
, WINBIND_USERINFO
, *num_entries
);
690 smb_panic("query_user_list out of memory");
691 for (i
=0; i
<(*num_entries
); i
++) {
692 (*info
)[i
].acct_name
= centry_string(centry
, mem_ctx
);
693 (*info
)[i
].full_name
= centry_string(centry
, mem_ctx
);
694 (*info
)[i
].user_sid
= centry_sid(centry
, mem_ctx
);
695 (*info
)[i
].group_sid
= centry_sid(centry
, mem_ctx
);
699 status
= centry
->status
;
701 DEBUG(10,("query_user_list: [Cached] - cached list for domain %s status %s\n",
702 domain
->name
, get_friendly_nt_error_msg(status
) ));
711 /* Return status value returned by seq number check */
713 if (!NT_STATUS_IS_OK(domain
->last_status
))
714 return domain
->last_status
;
716 /* Put the query_user_list() in a retry loop. There appears to be
717 * some bug either with Windows 2000 or Samba's handling of large
718 * rpc replies. This manifests itself as sudden disconnection
719 * at a random point in the enumeration of a large (60k) user list.
720 * The retry loop simply tries the operation again. )-: It's not
721 * pretty but an acceptable workaround until we work out what the
722 * real problem is. */
727 DEBUG(10,("query_user_list: [Cached] - doing backend query for list for domain %s\n",
730 status
= domain
->backend
->query_user_list(domain
, mem_ctx
, num_entries
, info
);
731 if (!NT_STATUS_IS_OK(status
))
732 DEBUG(3, ("query_user_list: returned 0x%08x, retrying\n", NT_STATUS_V(status
)));
733 if (NT_STATUS_V(status
) == NT_STATUS_V(NT_STATUS_UNSUCCESSFUL
)) {
734 DEBUG(3, ("query_user_list: flushing connection cache\n"));
738 } while (NT_STATUS_V(status
) == NT_STATUS_V(NT_STATUS_UNSUCCESSFUL
) &&
742 refresh_sequence_number(domain
, False
);
743 centry
= centry_start(domain
, status
);
746 centry_put_uint32(centry
, *num_entries
);
747 for (i
=0; i
<(*num_entries
); i
++) {
748 centry_put_string(centry
, (*info
)[i
].acct_name
);
749 centry_put_string(centry
, (*info
)[i
].full_name
);
750 centry_put_sid(centry
, (*info
)[i
].user_sid
);
751 centry_put_sid(centry
, (*info
)[i
].group_sid
);
752 if (domain
->backend
->consistent
) {
753 /* when the backend is consistent we can pre-prime some mappings */
754 wcache_save_name_to_sid(domain
, NT_STATUS_OK
,
756 (*info
)[i
].acct_name
,
759 wcache_save_sid_to_name(domain
, NT_STATUS_OK
,
762 (*info
)[i
].acct_name
,
764 wcache_save_user(domain
, NT_STATUS_OK
, &(*info
)[i
]);
767 centry_end(centry
, "UL/%s", domain
->name
);
774 /* list all domain groups */
775 static NTSTATUS
enum_dom_groups(struct winbindd_domain
*domain
,
778 struct acct_info
**info
)
780 struct winbind_cache
*cache
= get_cache(domain
);
781 struct cache_entry
*centry
= NULL
;
788 centry
= wcache_fetch(cache
, domain
, "GL/%s/domain", domain
->name
);
792 *num_entries
= centry_uint32(centry
);
794 if (*num_entries
== 0)
797 (*info
) = TALLOC_ARRAY(mem_ctx
, struct acct_info
, *num_entries
);
799 smb_panic("enum_dom_groups out of memory");
800 for (i
=0; i
<(*num_entries
); i
++) {
801 fstrcpy((*info
)[i
].acct_name
, centry_string(centry
, mem_ctx
));
802 fstrcpy((*info
)[i
].acct_desc
, centry_string(centry
, mem_ctx
));
803 (*info
)[i
].rid
= centry_uint32(centry
);
807 status
= centry
->status
;
809 DEBUG(10,("enum_dom_groups: [Cached] - cached list for domain %s status %s\n",
810 domain
->name
, get_friendly_nt_error_msg(status
) ));
819 /* Return status value returned by seq number check */
821 if (!NT_STATUS_IS_OK(domain
->last_status
))
822 return domain
->last_status
;
824 DEBUG(10,("enum_dom_groups: [Cached] - doing backend query for list for domain %s\n",
827 status
= domain
->backend
->enum_dom_groups(domain
, mem_ctx
, num_entries
, info
);
830 refresh_sequence_number(domain
, False
);
831 centry
= centry_start(domain
, status
);
834 centry_put_uint32(centry
, *num_entries
);
835 for (i
=0; i
<(*num_entries
); i
++) {
836 centry_put_string(centry
, (*info
)[i
].acct_name
);
837 centry_put_string(centry
, (*info
)[i
].acct_desc
);
838 centry_put_uint32(centry
, (*info
)[i
].rid
);
840 centry_end(centry
, "GL/%s/domain", domain
->name
);
847 /* list all domain groups */
848 static NTSTATUS
enum_local_groups(struct winbindd_domain
*domain
,
851 struct acct_info
**info
)
853 struct winbind_cache
*cache
= get_cache(domain
);
854 struct cache_entry
*centry
= NULL
;
861 centry
= wcache_fetch(cache
, domain
, "GL/%s/local", domain
->name
);
865 *num_entries
= centry_uint32(centry
);
867 if (*num_entries
== 0)
870 (*info
) = TALLOC_ARRAY(mem_ctx
, struct acct_info
, *num_entries
);
872 smb_panic("enum_dom_groups out of memory");
873 for (i
=0; i
<(*num_entries
); i
++) {
874 fstrcpy((*info
)[i
].acct_name
, centry_string(centry
, mem_ctx
));
875 fstrcpy((*info
)[i
].acct_desc
, centry_string(centry
, mem_ctx
));
876 (*info
)[i
].rid
= centry_uint32(centry
);
881 /* If we are returning cached data and the domain controller
882 is down then we don't know whether the data is up to date
883 or not. Return NT_STATUS_MORE_PROCESSING_REQUIRED to
886 if (wcache_server_down(domain
)) {
887 DEBUG(10, ("enum_local_groups: returning cached user list and server was down\n"));
888 status
= NT_STATUS_MORE_PROCESSING_REQUIRED
;
890 status
= centry
->status
;
892 DEBUG(10,("enum_local_groups: [Cached] - cached list for domain %s status %s\n",
893 domain
->name
, get_friendly_nt_error_msg(status
) ));
902 /* Return status value returned by seq number check */
904 if (!NT_STATUS_IS_OK(domain
->last_status
))
905 return domain
->last_status
;
907 DEBUG(10,("enum_local_groups: [Cached] - doing backend query for list for domain %s\n",
910 status
= domain
->backend
->enum_local_groups(domain
, mem_ctx
, num_entries
, info
);
913 refresh_sequence_number(domain
, False
);
914 centry
= centry_start(domain
, status
);
917 centry_put_uint32(centry
, *num_entries
);
918 for (i
=0; i
<(*num_entries
); i
++) {
919 centry_put_string(centry
, (*info
)[i
].acct_name
);
920 centry_put_string(centry
, (*info
)[i
].acct_desc
);
921 centry_put_uint32(centry
, (*info
)[i
].rid
);
923 centry_end(centry
, "GL/%s/local", domain
->name
);
930 /* convert a single name to a sid in a domain */
931 static NTSTATUS
name_to_sid(struct winbindd_domain
*domain
,
933 const char *domain_name
,
936 enum SID_NAME_USE
*type
)
938 struct winbind_cache
*cache
= get_cache(domain
);
939 struct cache_entry
*centry
= NULL
;
947 fstrcpy(uname
, name
);
949 centry
= wcache_fetch(cache
, domain
, "NS/%s/%s", domain_name
, uname
);
952 *type
= (enum SID_NAME_USE
)centry_uint32(centry
);
953 sid2
= centry_sid(centry
, mem_ctx
);
960 status
= centry
->status
;
962 DEBUG(10,("name_to_sid: [Cached] - cached name for domain %s status %s\n",
963 domain
->name
, get_friendly_nt_error_msg(status
) ));
971 /* If the seq number check indicated that there is a problem
972 * with this DC, then return that status... except for
973 * access_denied. This is special because the dc may be in
974 * "restrict anonymous = 1" mode, in which case it will deny
975 * most unauthenticated operations, but *will* allow the LSA
976 * name-to-sid that we try as a fallback. */
978 if (!(NT_STATUS_IS_OK(domain
->last_status
)
979 || NT_STATUS_EQUAL(domain
->last_status
, NT_STATUS_ACCESS_DENIED
)))
980 return domain
->last_status
;
982 DEBUG(10,("name_to_sid: [Cached] - doing backend query for name for domain %s\n",
985 status
= domain
->backend
->name_to_sid(domain
, mem_ctx
, domain_name
, name
, sid
, type
);
988 wcache_save_name_to_sid(domain
, status
, domain_name
, name
, sid
, *type
);
990 /* We can't save the sid to name mapping as we don't know the
991 correct case of the name without looking it up */
996 /* convert a sid to a user or group name. The sid is guaranteed to be in the domain
998 static NTSTATUS
sid_to_name(struct winbindd_domain
*domain
,
1003 enum SID_NAME_USE
*type
)
1005 struct winbind_cache
*cache
= get_cache(domain
);
1006 struct cache_entry
*centry
= NULL
;
1013 centry
= wcache_fetch(cache
, domain
, "SN/%s", sid_to_string(sid_string
, sid
));
1016 if (NT_STATUS_IS_OK(centry
->status
)) {
1017 *type
= (enum SID_NAME_USE
)centry_uint32(centry
);
1018 *domain_name
= centry_string(centry
, mem_ctx
);
1019 *name
= centry_string(centry
, mem_ctx
);
1021 status
= centry
->status
;
1023 DEBUG(10,("sid_to_name: [Cached] - cached name for domain %s status %s\n",
1024 domain
->name
, get_friendly_nt_error_msg(status
) ));
1026 centry_free(centry
);
1031 *domain_name
= NULL
;
1033 /* If the seq number check indicated that there is a problem
1034 * with this DC, then return that status... except for
1035 * access_denied. This is special because the dc may be in
1036 * "restrict anonymous = 1" mode, in which case it will deny
1037 * most unauthenticated operations, but *will* allow the LSA
1038 * sid-to-name that we try as a fallback. */
1040 if (!(NT_STATUS_IS_OK(domain
->last_status
)
1041 || NT_STATUS_EQUAL(domain
->last_status
, NT_STATUS_ACCESS_DENIED
)))
1042 return domain
->last_status
;
1044 DEBUG(10,("sid_to_name: [Cached] - doing backend query for name for domain %s\n",
1047 status
= domain
->backend
->sid_to_name(domain
, mem_ctx
, sid
, domain_name
, name
, type
);
1050 refresh_sequence_number(domain
, False
);
1051 wcache_save_sid_to_name(domain
, status
, sid
, *domain_name
, *name
, *type
);
1053 /* We can't save the name to sid mapping here, as with sid history a
1054 * later name2sid would give the wrong sid. */
1060 /* Lookup user information from a rid */
1061 static NTSTATUS
query_user(struct winbindd_domain
*domain
,
1062 TALLOC_CTX
*mem_ctx
,
1063 const DOM_SID
*user_sid
,
1064 WINBIND_USERINFO
*info
)
1066 struct winbind_cache
*cache
= get_cache(domain
);
1067 struct cache_entry
*centry
= NULL
;
1073 centry
= wcache_fetch(cache
, domain
, "U/%s", sid_string_static(user_sid
));
1075 /* If we have an access denied cache entry and a cached info3 in the
1076 samlogon cache then do a query. This will force the rpc back end
1077 to return the info3 data. */
1079 if (NT_STATUS_V(domain
->last_status
) == NT_STATUS_V(NT_STATUS_ACCESS_DENIED
) &&
1080 netsamlogon_cache_have(user_sid
)) {
1081 DEBUG(10, ("query_user: cached access denied and have cached info3\n"));
1082 domain
->last_status
= NT_STATUS_OK
;
1083 centry_free(centry
);
1090 info
->acct_name
= centry_string(centry
, mem_ctx
);
1091 info
->full_name
= centry_string(centry
, mem_ctx
);
1092 info
->user_sid
= centry_sid(centry
, mem_ctx
);
1093 info
->group_sid
= centry_sid(centry
, mem_ctx
);
1094 status
= centry
->status
;
1096 DEBUG(10,("query_user: [Cached] - cached info for domain %s status %s\n",
1097 domain
->name
, get_friendly_nt_error_msg(status
) ));
1099 centry_free(centry
);
1105 /* Return status value returned by seq number check */
1107 if (!NT_STATUS_IS_OK(domain
->last_status
))
1108 return domain
->last_status
;
1110 DEBUG(10,("sid_to_name: [Cached] - doing backend query for info for domain %s\n",
1113 status
= domain
->backend
->query_user(domain
, mem_ctx
, user_sid
, info
);
1116 refresh_sequence_number(domain
, False
);
1117 wcache_save_user(domain
, status
, info
);
1123 /* Lookup groups a user is a member of. */
1124 static NTSTATUS
lookup_usergroups(struct winbindd_domain
*domain
,
1125 TALLOC_CTX
*mem_ctx
,
1126 const DOM_SID
*user_sid
,
1127 uint32
*num_groups
, DOM_SID
***user_gids
)
1129 struct winbind_cache
*cache
= get_cache(domain
);
1130 struct cache_entry
*centry
= NULL
;
1138 centry
= wcache_fetch(cache
, domain
, "UG/%s", sid_to_string(sid_string
, user_sid
));
1140 /* If we have an access denied cache entry and a cached info3 in the
1141 samlogon cache then do a query. This will force the rpc back end
1142 to return the info3 data. */
1144 if (NT_STATUS_V(domain
->last_status
) == NT_STATUS_V(NT_STATUS_ACCESS_DENIED
) &&
1145 netsamlogon_cache_have(user_sid
)) {
1146 DEBUG(10, ("query_user: cached access denied and have cached info3\n"));
1147 domain
->last_status
= NT_STATUS_OK
;
1148 centry_free(centry
);
1155 *num_groups
= centry_uint32(centry
);
1157 if (*num_groups
== 0)
1160 (*user_gids
) = TALLOC_ARRAY(mem_ctx
, DOM_SID
*, *num_groups
);
1162 smb_panic("lookup_usergroups out of memory");
1163 for (i
=0; i
<(*num_groups
); i
++) {
1164 (*user_gids
)[i
] = centry_sid(centry
, mem_ctx
);
1168 status
= centry
->status
;
1170 DEBUG(10,("lookup_usergroups: [Cached] - cached info for domain %s status %s\n",
1171 domain
->name
, get_friendly_nt_error_msg(status
) ));
1173 centry_free(centry
);
1178 (*user_gids
) = NULL
;
1180 /* Return status value returned by seq number check */
1182 if (!NT_STATUS_IS_OK(domain
->last_status
))
1183 return domain
->last_status
;
1185 DEBUG(10,("lookup_usergroups: [Cached] - doing backend query for info for domain %s\n",
1188 status
= domain
->backend
->lookup_usergroups(domain
, mem_ctx
, user_sid
, num_groups
, user_gids
);
1191 refresh_sequence_number(domain
, False
);
1192 centry
= centry_start(domain
, status
);
1195 centry_put_uint32(centry
, *num_groups
);
1196 for (i
=0; i
<(*num_groups
); i
++) {
1197 centry_put_sid(centry
, (*user_gids
)[i
]);
1199 centry_end(centry
, "UG/%s", sid_to_string(sid_string
, user_sid
));
1200 centry_free(centry
);
1206 static NTSTATUS
lookup_useraliases(struct winbindd_domain
*domain
,
1207 TALLOC_CTX
*mem_ctx
,
1208 uint32 num_sids
, DOM_SID
**sids
,
1209 uint32
*num_aliases
, uint32
**alias_rids
)
1211 struct winbind_cache
*cache
= get_cache(domain
);
1212 struct cache_entry
*centry
= NULL
;
1214 char *sidlist
= talloc_strdup(mem_ctx
, "");
1220 if (num_sids
== 0) {
1223 return NT_STATUS_OK
;
1226 /* We need to cache indexed by the whole list of SIDs, the aliases
1227 * resulting might come from any of the SIDs. */
1229 for (i
=0; i
<num_sids
; i
++) {
1230 sidlist
= talloc_asprintf(mem_ctx
, "%s/%s", sidlist
,
1231 sid_string_static(sids
[i
]));
1232 if (sidlist
== NULL
)
1233 return NT_STATUS_NO_MEMORY
;
1236 centry
= wcache_fetch(cache
, domain
, "UA%s", sidlist
);
1241 *num_aliases
= centry_uint32(centry
);
1244 (*alias_rids
) = TALLOC_ARRAY(mem_ctx
, uint32
, *num_aliases
);
1246 if ((*num_aliases
!= 0) && ((*alias_rids
) == NULL
))
1247 return NT_STATUS_NO_MEMORY
;
1249 for (i
=0; i
<(*num_aliases
); i
++)
1250 (*alias_rids
)[i
] = centry_uint32(centry
);
1252 status
= centry
->status
;
1254 DEBUG(10,("lookup_useraliases: [Cached] - cached info for domain %s "
1255 "status %s\n", domain
->name
,
1256 get_friendly_nt_error_msg(status
)));
1258 centry_free(centry
);
1263 (*alias_rids
) = NULL
;
1265 if (!NT_STATUS_IS_OK(domain
->last_status
))
1266 return domain
->last_status
;
1268 DEBUG(10,("lookup_usergroups: [Cached] - doing backend query for info "
1269 "for domain %s\n", domain
->name
));
1271 status
= domain
->backend
->lookup_useraliases(domain
, mem_ctx
,
1273 num_aliases
, alias_rids
);
1276 refresh_sequence_number(domain
, False
);
1277 centry
= centry_start(domain
, status
);
1280 centry_put_uint32(centry
, *num_aliases
);
1281 for (i
=0; i
<(*num_aliases
); i
++)
1282 centry_put_uint32(centry
, (*alias_rids
)[i
]);
1283 centry_end(centry
, "UA%s", sidlist
);
1284 centry_free(centry
);
1291 static NTSTATUS
lookup_groupmem(struct winbindd_domain
*domain
,
1292 TALLOC_CTX
*mem_ctx
,
1293 const DOM_SID
*group_sid
, uint32
*num_names
,
1294 DOM_SID
***sid_mem
, char ***names
,
1295 uint32
**name_types
)
1297 struct winbind_cache
*cache
= get_cache(domain
);
1298 struct cache_entry
*centry
= NULL
;
1306 centry
= wcache_fetch(cache
, domain
, "GM/%s", sid_to_string(sid_string
, group_sid
));
1310 *num_names
= centry_uint32(centry
);
1312 if (*num_names
== 0)
1315 (*sid_mem
) = TALLOC_ARRAY(mem_ctx
, DOM_SID
*, *num_names
);
1316 (*names
) = TALLOC_ARRAY(mem_ctx
, char *, *num_names
);
1317 (*name_types
) = TALLOC_ARRAY(mem_ctx
, uint32
, *num_names
);
1319 if (! (*sid_mem
) || ! (*names
) || ! (*name_types
)) {
1320 smb_panic("lookup_groupmem out of memory");
1323 for (i
=0; i
<(*num_names
); i
++) {
1324 (*sid_mem
)[i
] = centry_sid(centry
, mem_ctx
);
1325 (*names
)[i
] = centry_string(centry
, mem_ctx
);
1326 (*name_types
)[i
] = centry_uint32(centry
);
1330 status
= centry
->status
;
1332 DEBUG(10,("lookup_groupmem: [Cached] - cached info for domain %s status %s\n",
1333 domain
->name
, get_friendly_nt_error_msg(status
) ));
1335 centry_free(centry
);
1342 (*name_types
) = NULL
;
1344 /* Return status value returned by seq number check */
1346 if (!NT_STATUS_IS_OK(domain
->last_status
))
1347 return domain
->last_status
;
1349 DEBUG(10,("lookup_groupmem: [Cached] - doing backend query for info for domain %s\n",
1352 status
= domain
->backend
->lookup_groupmem(domain
, mem_ctx
, group_sid
, num_names
,
1353 sid_mem
, names
, name_types
);
1356 refresh_sequence_number(domain
, False
);
1357 centry
= centry_start(domain
, status
);
1360 centry_put_uint32(centry
, *num_names
);
1361 for (i
=0; i
<(*num_names
); i
++) {
1362 centry_put_sid(centry
, (*sid_mem
)[i
]);
1363 centry_put_string(centry
, (*names
)[i
]);
1364 centry_put_uint32(centry
, (*name_types
)[i
]);
1366 centry_end(centry
, "GM/%s", sid_to_string(sid_string
, group_sid
));
1367 centry_free(centry
);
1373 /* find the sequence number for a domain */
1374 static NTSTATUS
sequence_number(struct winbindd_domain
*domain
, uint32
*seq
)
1376 refresh_sequence_number(domain
, False
);
1378 *seq
= domain
->sequence_number
;
1380 return NT_STATUS_OK
;
1383 /* enumerate trusted domains */
1384 static NTSTATUS
trusted_domains(struct winbindd_domain
*domain
,
1385 TALLOC_CTX
*mem_ctx
,
1386 uint32
*num_domains
,
1393 DEBUG(10,("trusted_domains: [Cached] - doing backend query for info for domain %s\n",
1396 /* we don't cache this call */
1397 return domain
->backend
->trusted_domains(domain
, mem_ctx
, num_domains
,
1398 names
, alt_names
, dom_sids
);
1401 /* find the domain sid */
1402 static NTSTATUS
domain_sid(struct winbindd_domain
*domain
, DOM_SID
*sid
)
1406 DEBUG(10,("domain_sid: [Cached] - doing backend query for info for domain %s\n",
1409 /* we don't cache this call */
1410 return domain
->backend
->domain_sid(domain
, sid
);
1413 /* find the alternate names for the domain, if any */
1414 static NTSTATUS
alternate_name(struct winbindd_domain
*domain
)
1418 DEBUG(10,("alternate_name: [Cached] - doing backend query for info for domain %s\n",
1421 /* we don't cache this call */
1422 return domain
->backend
->alternate_name(domain
);
1425 /* Invalidate cached user and group lists coherently */
1427 static int traverse_fn(TDB_CONTEXT
*the_tdb
, TDB_DATA kbuf
, TDB_DATA dbuf
,
1430 if (strncmp(kbuf
.dptr
, "UL/", 3) == 0 ||
1431 strncmp(kbuf
.dptr
, "GL/", 3) == 0)
1432 tdb_delete(the_tdb
, kbuf
);
1437 /* Invalidate the getpwnam and getgroups entries for a winbindd domain */
1439 void wcache_invalidate_samlogon(struct winbindd_domain
*domain
,
1440 NET_USER_INFO_3
*info3
)
1442 struct winbind_cache
*cache
;
1447 cache
= get_cache(domain
);
1448 netsamlogon_clear_cached_user(cache
->tdb
, info3
);
1451 void wcache_invalidate_cache(void)
1453 struct winbindd_domain
*domain
;
1455 for (domain
= domain_list(); domain
; domain
= domain
->next
) {
1456 struct winbind_cache
*cache
= get_cache(domain
);
1458 DEBUG(10, ("wcache_invalidate_cache: invalidating cache "
1459 "entries for %s\n", domain
->name
));
1461 tdb_traverse(cache
->tdb
, traverse_fn
, NULL
);
1465 /* the ADS backend methods are exposed via this structure */
1466 struct winbindd_methods cache_methods
= {