2 Unix SMB/CIFS implementation.
4 Copyright (C) Andrew Tridgell 1992-1998
5 Copyright (C) Gerald (Jerry) Carter 2003
6 Copyright (C) Volker Lendecke 2005
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>.
24 #include "../librpc/gen_ndr/ndr_security.h"
26 #include "../lib/util/memcache.h"
27 #include "idmap_cache.h"
28 #include "../libcli/security/security.h"
29 #include "lib/winbind_util.h"
30 #include "../librpc/gen_ndr/idmap.h"
32 /*****************************************************************
33 Dissect a user-provided name into domain, name, sid and type.
35 If an explicit domain name was given in the form domain\user, it
36 has to try that. If no explicit domain name was given, we have
38 *****************************************************************/
40 bool lookup_name(TALLOC_CTX
*mem_ctx
,
41 const char *full_name
, int flags
,
42 const char **ret_domain
, const char **ret_name
,
43 struct dom_sid
*ret_sid
, enum lsa_SidType
*ret_type
)
47 const char *domain
= NULL
;
48 const char *name
= NULL
;
51 enum lsa_SidType type
;
52 TALLOC_CTX
*tmp_ctx
= talloc_new(mem_ctx
);
54 if (tmp_ctx
== NULL
) {
55 DEBUG(0, ("talloc_new failed\n"));
59 p
= strchr_m(full_name
, '\\');
62 domain
= talloc_strndup(tmp_ctx
, full_name
,
63 PTR_DIFF(p
, full_name
));
64 name
= talloc_strdup(tmp_ctx
, p
+1);
66 domain
= talloc_strdup(tmp_ctx
, "");
67 name
= talloc_strdup(tmp_ctx
, full_name
);
70 if ((domain
== NULL
) || (name
== NULL
)) {
71 DEBUG(0, ("talloc failed\n"));
76 DEBUG(10,("lookup_name: %s => domain=[%s], name=[%s]\n",
77 full_name
, domain
, name
));
78 DEBUG(10, ("lookup_name: flags = 0x0%x\n", flags
));
80 if ((flags
& LOOKUP_NAME_DOMAIN
) &&
81 strequal(domain
, get_global_sam_name()))
84 /* It's our own domain, lookup the name in passdb */
85 if (lookup_global_sam_name(name
, flags
, &rid
, &type
)) {
86 sid_compose(&sid
, get_global_sam_sid(), rid
);
93 if ((flags
& LOOKUP_NAME_BUILTIN
) &&
94 strequal(domain
, builtin_domain_name()))
96 if (strlen(name
) == 0) {
97 /* Swap domain and name */
98 tmp
= name
; name
= domain
; domain
= tmp
;
99 sid_copy(&sid
, &global_sid_Builtin
);
100 type
= SID_NAME_DOMAIN
;
104 /* Explicit request for a name in BUILTIN */
105 if (lookup_builtin_name(name
, &rid
)) {
106 sid_compose(&sid
, &global_sid_Builtin
, rid
);
107 type
= SID_NAME_ALIAS
;
110 TALLOC_FREE(tmp_ctx
);
114 /* Try the explicit winbind lookup first, don't let it guess the
115 * domain yet at this point yet. This comes later. */
117 if ((domain
[0] != '\0') &&
118 (flags
& ~(LOOKUP_NAME_DOMAIN
|LOOKUP_NAME_ISOLATED
)) &&
119 (winbind_lookup_name(domain
, name
, &sid
, &type
))) {
123 if (((flags
& LOOKUP_NAME_NO_NSS
) == 0)
124 && strequal(domain
, unix_users_domain_name())) {
125 if (lookup_unix_user_name(name
, &sid
)) {
126 type
= SID_NAME_USER
;
129 TALLOC_FREE(tmp_ctx
);
133 if (((flags
& LOOKUP_NAME_NO_NSS
) == 0)
134 && strequal(domain
, unix_groups_domain_name())) {
135 if (lookup_unix_group_name(name
, &sid
)) {
136 type
= SID_NAME_DOM_GRP
;
139 TALLOC_FREE(tmp_ctx
);
143 if ((domain
[0] == '\0') && (!(flags
& LOOKUP_NAME_ISOLATED
))) {
144 TALLOC_FREE(tmp_ctx
);
148 /* Now the guesswork begins, we haven't been given an explicit
149 * domain. Try the sequence as documented on
150 * http://msdn.microsoft.com/library/en-us/secmgmt/security/lsalookupnames.asp
151 * November 27, 2005 */
153 /* 1. well-known names */
155 if ((flags
& LOOKUP_NAME_WKN
) &&
156 lookup_wellknown_name(tmp_ctx
, name
, &sid
, &domain
))
158 type
= SID_NAME_WKN_GRP
;
162 /* 2. Builtin domain as such */
164 if ((flags
& (LOOKUP_NAME_BUILTIN
|LOOKUP_NAME_REMOTE
)) &&
165 strequal(name
, builtin_domain_name()))
167 /* Swap domain and name */
168 tmp
= name
; name
= domain
; domain
= tmp
;
169 sid_copy(&sid
, &global_sid_Builtin
);
170 type
= SID_NAME_DOMAIN
;
174 /* 3. Account domain */
176 if ((flags
& LOOKUP_NAME_DOMAIN
) &&
177 strequal(name
, get_global_sam_name()))
179 if (!secrets_fetch_domain_sid(name
, &sid
)) {
180 DEBUG(3, ("Could not fetch my SID\n"));
181 TALLOC_FREE(tmp_ctx
);
184 /* Swap domain and name */
185 tmp
= name
; name
= domain
; domain
= tmp
;
186 type
= SID_NAME_DOMAIN
;
190 /* 4. Primary domain */
192 if ((flags
& LOOKUP_NAME_DOMAIN
) && !IS_DC
&&
193 strequal(name
, lp_workgroup()))
195 if (!secrets_fetch_domain_sid(name
, &sid
)) {
196 DEBUG(3, ("Could not fetch the domain SID\n"));
197 TALLOC_FREE(tmp_ctx
);
200 /* Swap domain and name */
201 tmp
= name
; name
= domain
; domain
= tmp
;
202 type
= SID_NAME_DOMAIN
;
206 /* 5. Trusted domains as such, to me it looks as if members don't do
207 this, tested an XP workstation in a NT domain -- vl */
209 if ((flags
& LOOKUP_NAME_REMOTE
) && IS_DC
&&
210 (pdb_get_trusteddom_pw(name
, NULL
, &sid
, NULL
)))
212 /* Swap domain and name */
213 tmp
= name
; name
= domain
; domain
= tmp
;
214 type
= SID_NAME_DOMAIN
;
218 /* 6. Builtin aliases */
220 if ((flags
& LOOKUP_NAME_BUILTIN
) &&
221 lookup_builtin_name(name
, &rid
))
223 domain
= talloc_strdup(tmp_ctx
, builtin_domain_name());
224 sid_compose(&sid
, &global_sid_Builtin
, rid
);
225 type
= SID_NAME_ALIAS
;
229 /* 7. Local systems' SAM (DCs don't have a local SAM) */
230 /* 8. Primary SAM (On members, this is the domain) */
232 /* Both cases are done by looking at our passdb */
234 if ((flags
& LOOKUP_NAME_DOMAIN
) &&
235 lookup_global_sam_name(name
, flags
, &rid
, &type
))
237 domain
= talloc_strdup(tmp_ctx
, get_global_sam_name());
238 sid_compose(&sid
, get_global_sam_sid(), rid
);
242 /* Now our local possibilities are exhausted. */
244 if (!(flags
& LOOKUP_NAME_REMOTE
)) {
245 TALLOC_FREE(tmp_ctx
);
249 /* If we are not a DC, we have to ask in our primary domain. Let
250 * winbind do that. */
253 (winbind_lookup_name(lp_workgroup(), name
, &sid
, &type
))) {
254 domain
= talloc_strdup(tmp_ctx
, lp_workgroup());
258 /* 9. Trusted domains */
260 /* If we're a DC we have to ask all trusted DC's. Winbind does not do
261 * that (yet), but give it a chance. */
263 if (IS_DC
&& winbind_lookup_name("", name
, &sid
, &type
)) {
264 struct dom_sid dom_sid
;
265 enum lsa_SidType domain_type
;
267 if (type
== SID_NAME_DOMAIN
) {
268 /* Swap name and type */
269 tmp
= name
; name
= domain
; domain
= tmp
;
273 /* Here we have to cope with a little deficiency in the
274 * winbind API: We have to ask it again for the name of the
275 * domain it figured out itself. Maybe fix that later... */
277 sid_copy(&dom_sid
, &sid
);
278 sid_split_rid(&dom_sid
, NULL
);
280 if (!winbind_lookup_sid(tmp_ctx
, &dom_sid
, &domain
, NULL
,
282 (domain_type
!= SID_NAME_DOMAIN
)) {
283 DEBUG(2, ("winbind could not find the domain's name "
284 "it just looked up for us\n"));
285 TALLOC_FREE(tmp_ctx
);
291 /* 10. Don't translate */
293 /* 11. Ok, windows would end here. Samba has two more options:
294 Unmapped users and unmapped groups */
296 if (((flags
& LOOKUP_NAME_NO_NSS
) == 0)
297 && lookup_unix_user_name(name
, &sid
)) {
298 domain
= talloc_strdup(tmp_ctx
, unix_users_domain_name());
299 type
= SID_NAME_USER
;
303 if (((flags
& LOOKUP_NAME_NO_NSS
) == 0)
304 && lookup_unix_group_name(name
, &sid
)) {
305 domain
= talloc_strdup(tmp_ctx
, unix_groups_domain_name());
306 type
= SID_NAME_DOM_GRP
;
311 * Ok, all possibilities tried. Fail.
314 TALLOC_FREE(tmp_ctx
);
318 if ((domain
== NULL
) || (name
== NULL
)) {
319 DEBUG(0, ("talloc failed\n"));
320 TALLOC_FREE(tmp_ctx
);
325 * Hand over the results to the talloc context we've been given.
328 if ((ret_name
!= NULL
) &&
329 !(*ret_name
= talloc_strdup(mem_ctx
, name
))) {
330 DEBUG(0, ("talloc failed\n"));
331 TALLOC_FREE(tmp_ctx
);
335 if (ret_domain
!= NULL
) {
337 if (!(tmp_dom
= talloc_strdup(mem_ctx
, domain
))) {
338 DEBUG(0, ("talloc failed\n"));
339 TALLOC_FREE(tmp_ctx
);
342 if (!strupper_m(tmp_dom
)) {
343 TALLOC_FREE(tmp_ctx
);
346 *ret_domain
= tmp_dom
;
349 if (ret_sid
!= NULL
) {
350 sid_copy(ret_sid
, &sid
);
353 if (ret_type
!= NULL
) {
357 TALLOC_FREE(tmp_ctx
);
361 /************************************************************************
362 Names from smb.conf can be unqualified. eg. valid users = foo
363 These names should never map to a remote name. Try global_sam_name()\foo,
364 and then "Unix Users"\foo (or "Unix Groups"\foo).
365 ************************************************************************/
367 bool lookup_name_smbconf(TALLOC_CTX
*mem_ctx
,
368 const char *full_name
, int flags
,
369 const char **ret_domain
, const char **ret_name
,
370 struct dom_sid
*ret_sid
, enum lsa_SidType
*ret_type
)
372 char *qualified_name
;
375 /* NB. No winbindd_separator here as lookup_name needs \\' */
376 if ((p
= strchr_m(full_name
, *lp_winbind_separator())) != NULL
) {
378 /* The name is already qualified with a domain. */
380 if (*lp_winbind_separator() != '\\') {
383 /* lookup_name() needs '\\' as a separator */
385 tmp
= talloc_strdup(mem_ctx
, full_name
);
389 tmp
[p
- full_name
] = '\\';
393 return lookup_name(mem_ctx
, full_name
, flags
,
394 ret_domain
, ret_name
,
398 /* Try with winbind default domain name. */
399 if (lp_winbind_use_default_domain()) {
402 qualified_name
= talloc_asprintf(mem_ctx
,
406 if (qualified_name
== NULL
) {
410 ok
= lookup_name(mem_ctx
,
422 /* Try with our own SAM name. */
423 qualified_name
= talloc_asprintf(mem_ctx
, "%s\\%s",
424 get_global_sam_name(),
426 if (!qualified_name
) {
430 if (lookup_name(mem_ctx
, qualified_name
, flags
,
431 ret_domain
, ret_name
,
432 ret_sid
, ret_type
)) {
436 /* Finally try with "Unix Users" or "Unix Group" */
437 qualified_name
= talloc_asprintf(mem_ctx
, "%s\\%s",
438 flags
& LOOKUP_NAME_GROUP
?
439 unix_groups_domain_name() :
440 unix_users_domain_name(),
442 if (!qualified_name
) {
446 return lookup_name(mem_ctx
, qualified_name
, flags
,
447 ret_domain
, ret_name
,
451 static bool wb_lookup_rids(TALLOC_CTX
*mem_ctx
,
452 const struct dom_sid
*domain_sid
,
453 int num_rids
, uint32_t *rids
,
454 const char **domain_name
,
455 const char **names
, enum lsa_SidType
*types
)
458 const char **my_names
;
459 enum lsa_SidType
*my_types
;
462 if (!(tmp_ctx
= talloc_init("wb_lookup_rids"))) {
466 if (!winbind_lookup_rids(tmp_ctx
, domain_sid
, num_rids
, rids
,
467 domain_name
, &my_names
, &my_types
)) {
469 for (i
=0; i
<num_rids
; i
++) {
471 types
[i
] = SID_NAME_UNKNOWN
;
473 TALLOC_FREE(tmp_ctx
);
477 if (!(*domain_name
= talloc_strdup(mem_ctx
, *domain_name
))) {
478 TALLOC_FREE(tmp_ctx
);
483 * winbind_lookup_rids allocates its own array. We've been given the
484 * array, so copy it over
487 for (i
=0; i
<num_rids
; i
++) {
488 if (my_names
[i
] == NULL
) {
489 TALLOC_FREE(tmp_ctx
);
492 if (!(names
[i
] = talloc_strdup(names
, my_names
[i
]))) {
493 TALLOC_FREE(tmp_ctx
);
496 types
[i
] = my_types
[i
];
498 TALLOC_FREE(tmp_ctx
);
502 static bool lookup_rids(TALLOC_CTX
*mem_ctx
, const struct dom_sid
*domain_sid
,
503 int num_rids
, uint32_t *rids
,
504 const char **domain_name
,
505 const char ***names
, enum lsa_SidType
**types
)
509 DEBUG(10, ("lookup_rids called for domain sid '%s'\n",
510 sid_string_dbg(domain_sid
)));
513 *names
= talloc_zero_array(mem_ctx
, const char *, num_rids
);
514 *types
= talloc_array(mem_ctx
, enum lsa_SidType
, num_rids
);
516 if ((*names
== NULL
) || (*types
== NULL
)) {
520 for (i
= 0; i
< num_rids
; i
++)
521 (*types
)[i
] = SID_NAME_UNKNOWN
;
527 if (sid_check_is_our_sam(domain_sid
)) {
530 if (*domain_name
== NULL
) {
531 *domain_name
= talloc_strdup(
532 mem_ctx
, get_global_sam_name());
535 if (*domain_name
== NULL
) {
540 result
= pdb_lookup_rids(domain_sid
, num_rids
, rids
,
544 return (NT_STATUS_IS_OK(result
) ||
545 NT_STATUS_EQUAL(result
, NT_STATUS_NONE_MAPPED
) ||
546 NT_STATUS_EQUAL(result
, STATUS_SOME_UNMAPPED
));
549 if (sid_check_is_builtin(domain_sid
)) {
551 if (*domain_name
== NULL
) {
552 *domain_name
= talloc_strdup(
553 mem_ctx
, builtin_domain_name());
556 if (*domain_name
== NULL
) {
560 for (i
=0; i
<num_rids
; i
++) {
561 if (lookup_builtin_rid(*names
, rids
[i
],
563 if ((*names
)[i
] == NULL
) {
566 (*types
)[i
] = SID_NAME_ALIAS
;
568 (*types
)[i
] = SID_NAME_UNKNOWN
;
574 if (sid_check_is_wellknown_domain(domain_sid
, NULL
)) {
575 for (i
=0; i
<num_rids
; i
++) {
577 sid_compose(&sid
, domain_sid
, rids
[i
]);
578 if (lookup_wellknown_sid(mem_ctx
, &sid
,
579 domain_name
, &(*names
)[i
])) {
580 if ((*names
)[i
] == NULL
) {
583 (*types
)[i
] = SID_NAME_WKN_GRP
;
585 (*types
)[i
] = SID_NAME_UNKNOWN
;
591 if (sid_check_is_unix_users(domain_sid
)) {
592 if (*domain_name
== NULL
) {
593 *domain_name
= talloc_strdup(
594 mem_ctx
, unix_users_domain_name());
595 if (*domain_name
== NULL
) {
599 for (i
=0; i
<num_rids
; i
++) {
600 (*names
)[i
] = talloc_strdup(
601 (*names
), uidtoname(rids
[i
]));
602 if ((*names
)[i
] == NULL
) {
605 (*types
)[i
] = SID_NAME_USER
;
610 if (sid_check_is_unix_groups(domain_sid
)) {
611 if (*domain_name
== NULL
) {
612 *domain_name
= talloc_strdup(
613 mem_ctx
, unix_groups_domain_name());
614 if (*domain_name
== NULL
) {
618 for (i
=0; i
<num_rids
; i
++) {
619 (*names
)[i
] = talloc_strdup(
620 (*names
), gidtoname(rids
[i
]));
621 if ((*names
)[i
] == NULL
) {
624 (*types
)[i
] = SID_NAME_DOM_GRP
;
629 return wb_lookup_rids(mem_ctx
, domain_sid
, num_rids
, rids
,
630 domain_name
, *names
, *types
);
634 * Is the SID a domain as such? If yes, lookup its name.
637 static bool lookup_as_domain(const struct dom_sid
*sid
, TALLOC_CTX
*mem_ctx
,
641 enum lsa_SidType type
;
643 if (sid_check_is_our_sam(sid
)) {
644 *name
= talloc_strdup(mem_ctx
, get_global_sam_name());
648 if (sid_check_is_builtin(sid
)) {
649 *name
= talloc_strdup(mem_ctx
, builtin_domain_name());
653 if (sid_check_is_wellknown_domain(sid
, &tmp
)) {
654 *name
= talloc_strdup(mem_ctx
, tmp
);
658 if (sid_check_is_unix_users(sid
)) {
659 *name
= talloc_strdup(mem_ctx
, unix_users_domain_name());
663 if (sid_check_is_unix_groups(sid
)) {
664 *name
= talloc_strdup(mem_ctx
, unix_groups_domain_name());
668 if (sid
->num_auths
!= 4) {
669 /* This can't be a domain */
674 uint32_t i
, num_domains
;
675 struct trustdom_info
**domains
;
677 /* This is relatively expensive, but it happens only on DCs
678 * and for SIDs that have 4 sub-authorities and thus look like
681 if (!NT_STATUS_IS_OK(pdb_enum_trusteddoms(mem_ctx
,
687 for (i
=0; i
<num_domains
; i
++) {
688 if (dom_sid_equal(sid
, &domains
[i
]->sid
)) {
689 *name
= talloc_strdup(mem_ctx
,
697 if (winbind_lookup_sid(mem_ctx
, sid
, &tmp
, NULL
, &type
) &&
698 (type
== SID_NAME_DOMAIN
)) {
707 * This tries to implement the rather weird rules for the lsa_lookup level
710 * This is as close as we can get to what W2k3 does. With this we survive the
711 * RPC-LSALOOKUP samba4 test as of 2006-01-08. NT4 as a PDC is a bit more
712 * different, but I assume that's just being too liberal. For example, W2k3
713 * replies to everything else but the levels 1-6 with INVALID_PARAMETER
714 * whereas NT4 does the same as level 1 (I think). I did not fully test that
715 * with NT4, this is what w2k3 does.
717 * Level 1: Ask everywhere
718 * Level 2: Ask domain and trusted domains, no builtin and wkn
719 * Level 3: Only ask domain
720 * Level 4: W2k3ad: Only ask AD trusts
721 * Level 5: Only ask transitive forest trusts
725 static bool check_dom_sid_to_level(const struct dom_sid
*sid
, int level
)
734 ret
= (!sid_check_is_builtin(sid
) &&
735 !sid_check_is_wellknown_domain(sid
, NULL
));
740 ret
= sid_check_is_our_sam(sid
);
747 DEBUG(10, ("%s SID %s in level %d\n",
748 ret
? "Accepting" : "Rejecting",
749 sid_string_dbg(sid
), level
));
754 * Lookup a bunch of SIDs. This is modeled after lsa_lookup_sids with
755 * references to domains, it is explicitly made for this.
757 * This attempts to be as efficient as possible: It collects all SIDs
758 * belonging to a domain and hands them in bulk to the appropriate lookup
759 * function. In particular pdb_lookup_rids with ldapsam_trusted benefits
760 * *hugely* from this.
763 NTSTATUS
lookup_sids(TALLOC_CTX
*mem_ctx
, int num_sids
,
764 const struct dom_sid
**sids
, int level
,
765 struct lsa_dom_info
**ret_domains
,
766 struct lsa_name_info
**ret_names
)
769 NTSTATUS result
= NT_STATUS_UNSUCCESSFUL
;
770 struct lsa_name_info
*name_infos
;
771 struct lsa_dom_info
*dom_infos
= NULL
;
775 if (!(tmp_ctx
= talloc_new(mem_ctx
))) {
776 DEBUG(0, ("talloc_new failed\n"));
777 return NT_STATUS_NO_MEMORY
;
781 name_infos
= talloc_array(mem_ctx
, struct lsa_name_info
, num_sids
);
782 if (name_infos
== NULL
) {
783 result
= NT_STATUS_NO_MEMORY
;
790 dom_infos
= talloc_zero_array(mem_ctx
, struct lsa_dom_info
,
791 LSA_REF_DOMAIN_LIST_MULTIPLIER
);
792 if (dom_infos
== NULL
) {
793 result
= NT_STATUS_NO_MEMORY
;
797 /* First build up the data structures:
799 * dom_infos is a list of domains referenced in the list of
800 * SIDs. Later we will walk the list of domains and look up the RIDs
803 * name_infos is a shadow-copy of the SIDs array to collect the real
806 * dom_info->idxs is an index into the name_infos array. The
807 * difficulty we have here is that we need to keep the SIDs the client
808 * asked for in the same order for the reply
811 for (i
=0; i
<num_sids
; i
++) {
814 const char *domain_name
= NULL
;
816 sid_copy(&sid
, sids
[i
]);
817 name_infos
[i
].type
= SID_NAME_USE_NONE
;
819 if (lookup_as_domain(&sid
, name_infos
, &domain_name
)) {
820 /* We can't push that through the normal lookup
821 * process, as this would reference illegal
824 * For example S-1-5-32 would end up referencing
825 * domain S-1-5- with RID 32 which is clearly wrong.
827 if (domain_name
== NULL
) {
828 result
= NT_STATUS_NO_MEMORY
;
832 name_infos
[i
].rid
= 0;
833 name_infos
[i
].type
= SID_NAME_DOMAIN
;
834 name_infos
[i
].name
= NULL
;
836 if (sid_check_is_builtin(&sid
)) {
837 /* Yes, W2k3 returns "BUILTIN" both as domain
839 name_infos
[i
].name
= talloc_strdup(
840 name_infos
, builtin_domain_name());
841 if (name_infos
[i
].name
== NULL
) {
842 result
= NT_STATUS_NO_MEMORY
;
847 /* This is a normal SID with rid component */
848 if (!sid_split_rid(&sid
, &rid
)) {
849 result
= NT_STATUS_INVALID_SID
;
854 if (!check_dom_sid_to_level(&sid
, level
)) {
855 name_infos
[i
].rid
= 0;
856 name_infos
[i
].type
= SID_NAME_UNKNOWN
;
857 name_infos
[i
].name
= NULL
;
861 for (j
=0; j
<LSA_REF_DOMAIN_LIST_MULTIPLIER
; j
++) {
862 if (!dom_infos
[j
].valid
) {
865 if (dom_sid_equal(&sid
, &dom_infos
[j
].sid
)) {
870 if (j
== LSA_REF_DOMAIN_LIST_MULTIPLIER
) {
871 /* TODO: What's the right error message here? */
872 result
= NT_STATUS_NONE_MAPPED
;
876 if (!dom_infos
[j
].valid
) {
877 /* We found a domain not yet referenced, create a new
879 dom_infos
[j
].valid
= true;
880 sid_copy(&dom_infos
[j
].sid
, &sid
);
882 if (domain_name
!= NULL
) {
883 /* This name was being found above in the case
884 * when we found a domain SID */
886 talloc_strdup(dom_infos
, domain_name
);
887 if (dom_infos
[j
].name
== NULL
) {
888 result
= NT_STATUS_NO_MEMORY
;
892 /* lookup_rids will take care of this */
893 dom_infos
[j
].name
= NULL
;
897 name_infos
[i
].dom_idx
= j
;
899 if (name_infos
[i
].type
== SID_NAME_USE_NONE
) {
900 name_infos
[i
].rid
= rid
;
902 ADD_TO_ARRAY(dom_infos
, int, i
, &dom_infos
[j
].idxs
,
903 &dom_infos
[j
].num_idxs
);
905 if (dom_infos
[j
].idxs
== NULL
) {
906 result
= NT_STATUS_NO_MEMORY
;
912 /* Iterate over the domains found */
914 for (i
=0; i
<LSA_REF_DOMAIN_LIST_MULTIPLIER
; i
++) {
916 const char *domain_name
= NULL
;
918 enum lsa_SidType
*types
;
919 struct lsa_dom_info
*dom
= &dom_infos
[i
];
922 /* No domains left, we're done */
926 if (dom
->num_idxs
== 0) {
928 * This happens only if the only sid related to
929 * this domain is the domain sid itself, which
930 * is mapped to SID_NAME_DOMAIN above.
935 if (!(rids
= talloc_array(tmp_ctx
, uint32_t, dom
->num_idxs
))) {
936 result
= NT_STATUS_NO_MEMORY
;
940 for (j
=0; j
<dom
->num_idxs
; j
++) {
941 rids
[j
] = name_infos
[dom
->idxs
[j
]].rid
;
944 if (!lookup_rids(tmp_ctx
, &dom
->sid
,
945 dom
->num_idxs
, rids
, &domain_name
,
947 result
= NT_STATUS_NO_MEMORY
;
951 if (!(dom
->name
= talloc_strdup(dom_infos
, domain_name
))) {
952 result
= NT_STATUS_NO_MEMORY
;
956 for (j
=0; j
<dom
->num_idxs
; j
++) {
957 int idx
= dom
->idxs
[j
];
958 name_infos
[idx
].type
= types
[j
];
959 if (types
[j
] != SID_NAME_UNKNOWN
) {
960 name_infos
[idx
].name
=
961 talloc_strdup(name_infos
, names
[j
]);
962 if (name_infos
[idx
].name
== NULL
) {
963 result
= NT_STATUS_NO_MEMORY
;
967 name_infos
[idx
].name
= NULL
;
972 *ret_domains
= dom_infos
;
973 *ret_names
= name_infos
;
974 TALLOC_FREE(tmp_ctx
);
978 TALLOC_FREE(dom_infos
);
979 TALLOC_FREE(name_infos
);
980 TALLOC_FREE(tmp_ctx
);
984 /*****************************************************************
985 *THE CANONICAL* convert SID to name function.
986 *****************************************************************/
988 bool lookup_sid(TALLOC_CTX
*mem_ctx
, const struct dom_sid
*sid
,
989 const char **ret_domain
, const char **ret_name
,
990 enum lsa_SidType
*ret_type
)
992 struct lsa_dom_info
*domain
;
993 struct lsa_name_info
*name
;
997 DEBUG(10, ("lookup_sid called for SID '%s'\n", sid_string_dbg(sid
)));
999 if (!(tmp_ctx
= talloc_new(mem_ctx
))) {
1000 DEBUG(0, ("talloc_new failed\n"));
1004 if (!NT_STATUS_IS_OK(lookup_sids(tmp_ctx
, 1, &sid
, 1,
1009 if (name
->type
== SID_NAME_UNKNOWN
) {
1013 if ((ret_domain
!= NULL
) &&
1014 !(*ret_domain
= talloc_strdup(mem_ctx
, domain
->name
))) {
1018 if ((ret_name
!= NULL
) &&
1019 !(*ret_name
= talloc_strdup(mem_ctx
, name
->name
))) {
1023 if (ret_type
!= NULL
) {
1024 *ret_type
= name
->type
;
1031 DEBUG(10, ("Sid %s -> %s\\%s(%d)\n", sid_string_dbg(sid
),
1032 domain
->name
, name
->name
, name
->type
));
1034 DEBUG(10, ("failed to lookup sid %s\n", sid_string_dbg(sid
)));
1036 TALLOC_FREE(tmp_ctx
);
1040 /*****************************************************************
1041 Id mapping cache. This is to avoid Winbind mappings already
1042 seen by smbd to be queried too frequently, keeping winbindd
1043 busy, and blocking smbd while winbindd is busy with other
1044 stuff. Written by Michael Steffens <michael.steffens@hp.com>,
1045 modified to use linked lists by jra.
1046 *****************************************************************/
1049 /*****************************************************************
1050 *THE LEGACY* convert uid_t to SID function.
1051 *****************************************************************/
1053 static void legacy_uid_to_sid(struct dom_sid
*psid
, uid_t uid
)
1061 id
.type
= ID_TYPE_UID
;
1064 ret
= pdb_id_to_sid(&id
, psid
);
1068 /* This is a mapped user */
1072 /* This is an unmapped user */
1074 uid_to_unix_users_sid(uid
, psid
);
1077 struct unixid xid
= {
1078 .id
= uid
, .type
= ID_TYPE_UID
1080 idmap_cache_set_sid2unixid(psid
, &xid
);
1084 DEBUG(10,("LEGACY: uid %u -> sid %s\n", (unsigned int)uid
,
1085 sid_string_dbg(psid
)));
1090 /*****************************************************************
1091 *THE LEGACY* convert gid_t to SID function.
1092 *****************************************************************/
1094 static void legacy_gid_to_sid(struct dom_sid
*psid
, gid_t gid
)
1102 id
.type
= ID_TYPE_GID
;
1105 ret
= pdb_id_to_sid(&id
, psid
);
1109 /* This is a mapped group */
1113 /* This is an unmapped group */
1115 gid_to_unix_groups_sid(gid
, psid
);
1118 struct unixid xid
= {
1119 .id
= gid
, .type
= ID_TYPE_GID
1121 idmap_cache_set_sid2unixid(psid
, &xid
);
1125 DEBUG(10,("LEGACY: gid %u -> sid %s\n", (unsigned int)gid
,
1126 sid_string_dbg(psid
)));
1131 /*****************************************************************
1132 *THE LEGACY* convert SID to id function.
1133 *****************************************************************/
1135 static bool legacy_sid_to_unixid(const struct dom_sid
*psid
, struct unixid
*id
)
1140 ret
= pdb_sid_to_id(psid
, id
);
1144 DEBUG(10,("LEGACY: mapping failed for sid %s\n",
1145 sid_string_dbg(psid
)));
1152 static bool legacy_sid_to_gid(const struct dom_sid
*psid
, gid_t
*pgid
)
1155 if (!legacy_sid_to_unixid(psid
, &id
)) {
1158 if (id
.type
== ID_TYPE_GID
|| id
.type
== ID_TYPE_BOTH
) {
1165 static bool legacy_sid_to_uid(const struct dom_sid
*psid
, uid_t
*puid
)
1168 if (!legacy_sid_to_unixid(psid
, &id
)) {
1171 if (id
.type
== ID_TYPE_UID
|| id
.type
== ID_TYPE_BOTH
) {
1178 /*****************************************************************
1179 *THE CANONICAL* convert uid_t to SID function.
1180 *****************************************************************/
1182 void uid_to_sid(struct dom_sid
*psid
, uid_t uid
)
1184 bool expired
= true;
1188 /* Check the winbindd cache directly. */
1189 ret
= idmap_cache_find_uid2sid(uid
, psid
, &expired
);
1191 if (ret
&& !expired
&& is_null_sid(psid
)) {
1193 * Negative cache entry, we already asked.
1196 legacy_uid_to_sid(psid
, uid
);
1200 if (!ret
|| expired
) {
1201 /* Not in cache. Ask winbindd. */
1202 if (!winbind_uid_to_sid(psid
, uid
)) {
1204 * We shouldn't return the NULL SID
1205 * here if winbind was running and
1206 * couldn't map, as winbind will have
1207 * added a negative entry that will
1208 * cause us to go though the
1209 * legacy_uid_to_sid()
1210 * function anyway in the case above
1211 * the next time we ask.
1213 DEBUG(5, ("uid_to_sid: winbind failed to find a sid "
1214 "for uid %u\n", (unsigned int)uid
));
1216 legacy_uid_to_sid(psid
, uid
);
1221 DEBUG(10,("uid %u -> sid %s\n", (unsigned int)uid
,
1222 sid_string_dbg(psid
)));
1227 /*****************************************************************
1228 *THE CANONICAL* convert gid_t to SID function.
1229 *****************************************************************/
1231 void gid_to_sid(struct dom_sid
*psid
, gid_t gid
)
1233 bool expired
= true;
1237 /* Check the winbindd cache directly. */
1238 ret
= idmap_cache_find_gid2sid(gid
, psid
, &expired
);
1240 if (ret
&& !expired
&& is_null_sid(psid
)) {
1242 * Negative cache entry, we already asked.
1245 legacy_gid_to_sid(psid
, gid
);
1249 if (!ret
|| expired
) {
1250 /* Not in cache. Ask winbindd. */
1251 if (!winbind_gid_to_sid(psid
, gid
)) {
1253 * We shouldn't return the NULL SID
1254 * here if winbind was running and
1255 * couldn't map, as winbind will have
1256 * added a negative entry that will
1257 * cause us to go though the
1258 * legacy_gid_to_sid()
1259 * function anyway in the case above
1260 * the next time we ask.
1262 DEBUG(5, ("gid_to_sid: winbind failed to find a sid "
1263 "for gid %u\n", (unsigned int)gid
));
1265 legacy_gid_to_sid(psid
, gid
);
1270 DEBUG(10,("gid %u -> sid %s\n", (unsigned int)gid
,
1271 sid_string_dbg(psid
)));
1276 bool sids_to_unixids(const struct dom_sid
*sids
, uint32_t num_sids
,
1279 struct wbcDomainSid
*wbc_sids
= NULL
;
1280 struct wbcUnixId
*wbc_ids
= NULL
;
1281 uint32_t i
, num_not_cached
;
1285 wbc_sids
= talloc_array(talloc_tos(), struct wbcDomainSid
, num_sids
);
1286 if (wbc_sids
== NULL
) {
1292 for (i
=0; i
<num_sids
; i
++) {
1296 if (sid_peek_check_rid(&global_sid_Unix_Users
,
1298 ids
[i
].type
= ID_TYPE_UID
;
1302 if (sid_peek_check_rid(&global_sid_Unix_Groups
,
1304 ids
[i
].type
= ID_TYPE_GID
;
1308 if (idmap_cache_find_sid2unixid(&sids
[i
], &ids
[i
], &expired
)
1313 ids
[i
].type
= ID_TYPE_NOT_SPECIFIED
;
1314 memcpy(&wbc_sids
[num_not_cached
], &sids
[i
],
1315 ndr_size_dom_sid(&sids
[i
], 0));
1316 num_not_cached
+= 1;
1318 if (num_not_cached
== 0) {
1321 wbc_ids
= talloc_array(talloc_tos(), struct wbcUnixId
, num_not_cached
);
1322 if (wbc_ids
== NULL
) {
1325 for (i
=0; i
<num_not_cached
; i
++) {
1326 wbc_ids
[i
].type
= WBC_ID_TYPE_NOT_SPECIFIED
;
1328 err
= wbcSidsToUnixIds(wbc_sids
, num_not_cached
, wbc_ids
);
1329 if (!WBC_ERROR_IS_OK(err
)) {
1330 DEBUG(10, ("wbcSidsToUnixIds returned %s\n",
1331 wbcErrorString(err
)));
1336 for (i
=0; i
<num_sids
; i
++) {
1337 if (ids
[i
].type
== ID_TYPE_NOT_SPECIFIED
) {
1338 switch (wbc_ids
[num_not_cached
].type
) {
1339 case WBC_ID_TYPE_UID
:
1340 ids
[i
].type
= ID_TYPE_UID
;
1341 ids
[i
].id
= wbc_ids
[num_not_cached
].id
.uid
;
1343 case WBC_ID_TYPE_GID
:
1344 ids
[i
].type
= ID_TYPE_GID
;
1345 ids
[i
].id
= wbc_ids
[num_not_cached
].id
.gid
;
1348 /* The types match, and wbcUnixId -> id is a union anyway */
1349 ids
[i
].type
= (enum id_type
)wbc_ids
[num_not_cached
].type
;
1350 ids
[i
].id
= wbc_ids
[num_not_cached
].id
.gid
;
1353 num_not_cached
+= 1;
1357 for (i
=0; i
<num_sids
; i
++) {
1358 if (ids
[i
].type
!= ID_TYPE_NOT_SPECIFIED
) {
1361 if (legacy_sid_to_gid(&sids
[i
], &ids
[i
].id
)) {
1362 ids
[i
].type
= ID_TYPE_GID
;
1365 if (legacy_sid_to_uid(&sids
[i
], &ids
[i
].id
)) {
1366 ids
[i
].type
= ID_TYPE_UID
;
1371 for (i
=0; i
<num_sids
; i
++) {
1372 switch(ids
[i
].type
) {
1373 case WBC_ID_TYPE_GID
:
1374 case WBC_ID_TYPE_UID
:
1375 case WBC_ID_TYPE_BOTH
:
1376 if (ids
[i
].id
== -1) {
1377 ids
[i
].type
= ID_TYPE_NOT_SPECIFIED
;
1380 case WBC_ID_TYPE_NOT_SPECIFIED
:
1387 TALLOC_FREE(wbc_ids
);
1388 TALLOC_FREE(wbc_sids
);
1392 /*****************************************************************
1393 *THE CANONICAL* convert SID to uid function.
1394 *****************************************************************/
1396 bool sid_to_uid(const struct dom_sid
*psid
, uid_t
*puid
)
1398 bool expired
= true;
1402 /* Optimize for the Unix Users Domain
1403 * as the conversion is straightforward */
1404 if (sid_peek_check_rid(&global_sid_Unix_Users
, psid
, &rid
)) {
1408 /* return here, don't cache */
1409 DEBUG(10,("sid %s -> uid %u\n", sid_string_dbg(psid
),
1410 (unsigned int)*puid
));
1414 /* Check the winbindd cache directly. */
1415 ret
= idmap_cache_find_sid2uid(psid
, puid
, &expired
);
1417 if (ret
&& !expired
&& (*puid
== (uid_t
)-1)) {
1419 * Negative cache entry, we already asked.
1422 return legacy_sid_to_uid(psid
, puid
);
1425 if (!ret
|| expired
) {
1426 /* Not in cache. Ask winbindd. */
1427 if (!winbind_sid_to_uid(puid
, psid
)) {
1428 DEBUG(5, ("winbind failed to find a uid for sid %s\n",
1429 sid_string_dbg(psid
)));
1430 /* winbind failed. do legacy */
1431 return legacy_sid_to_uid(psid
, puid
);
1435 /* TODO: Here would be the place to allocate both a gid and a uid for
1436 * the SID in question */
1438 DEBUG(10,("sid %s -> uid %u\n", sid_string_dbg(psid
),
1439 (unsigned int)*puid
));
1444 /*****************************************************************
1445 *THE CANONICAL* convert SID to gid function.
1446 Group mapping is used for gids that maps to Wellknown SIDs
1447 *****************************************************************/
1449 bool sid_to_gid(const struct dom_sid
*psid
, gid_t
*pgid
)
1451 bool expired
= true;
1455 /* Optimize for the Unix Groups Domain
1456 * as the conversion is straightforward */
1457 if (sid_peek_check_rid(&global_sid_Unix_Groups
, psid
, &rid
)) {
1461 /* return here, don't cache */
1462 DEBUG(10,("sid %s -> gid %u\n", sid_string_dbg(psid
),
1463 (unsigned int)*pgid
));
1467 /* Check the winbindd cache directly. */
1468 ret
= idmap_cache_find_sid2gid(psid
, pgid
, &expired
);
1470 if (ret
&& !expired
&& (*pgid
== (gid_t
)-1)) {
1472 * Negative cache entry, we already asked.
1475 return legacy_sid_to_gid(psid
, pgid
);
1478 if (!ret
|| expired
) {
1479 /* Not in cache or negative. Ask winbindd. */
1480 /* Ask winbindd if it can map this sid to a gid.
1481 * (Idmap will check it is a valid SID and of the right type) */
1483 if ( !winbind_sid_to_gid(pgid
, psid
) ) {
1485 DEBUG(10,("winbind failed to find a gid for sid %s\n",
1486 sid_string_dbg(psid
)));
1487 /* winbind failed. do legacy */
1488 return legacy_sid_to_gid(psid
, pgid
);
1492 DEBUG(10,("sid %s -> gid %u\n", sid_string_dbg(psid
),
1493 (unsigned int)*pgid
));
1499 * @brief This function gets the primary group SID mapping the primary
1500 * GID of the user as obtained by an actual getpwnam() call.
1501 * This is necessary to avoid issues with arbitrary group SIDs
1502 * stored in passdb. We try as hard as we can to get the SID
1503 * corresponding to the GID, including trying group mapping.
1504 * If nothing else works, we will force "Domain Users" as the
1506 * This is needed because we must always be able to lookup the
1507 * primary group SID, so we cannot settle for an arbitrary SID.
1509 * This call can be expensive. Use with moderation.
1510 * If you have a "samu" struct around use pdb_get_group_sid()
1511 * instead as it does properly cache results.
1513 * @param mem_ctx[in] The memory context iused to allocate the result.
1514 * @param username[in] The user's name
1515 * @param _pwd[in|out] If available, pass in user's passwd struct.
1516 * It will contain a tallocated passwd if NULL was
1518 * @param _group_sid[out] The user's Primary Group SID
1520 * @return NTSTATUS error code.
1522 NTSTATUS
get_primary_group_sid(TALLOC_CTX
*mem_ctx
,
1523 const char *username
,
1524 struct passwd
**_pwd
,
1525 struct dom_sid
**_group_sid
)
1527 TALLOC_CTX
*tmp_ctx
;
1528 bool need_lookup_sid
= false;
1529 struct dom_sid
*group_sid
;
1530 struct passwd
*pwd
= *_pwd
;
1532 tmp_ctx
= talloc_new(mem_ctx
);
1534 return NT_STATUS_NO_MEMORY
;
1538 pwd
= Get_Pwnam_alloc(mem_ctx
, username
);
1540 DEBUG(0, ("Failed to find a Unix account for %s\n",
1542 TALLOC_FREE(tmp_ctx
);
1543 return NT_STATUS_NO_SUCH_USER
;
1547 group_sid
= talloc_zero(mem_ctx
, struct dom_sid
);
1549 TALLOC_FREE(tmp_ctx
);
1550 return NT_STATUS_NO_MEMORY
;
1553 gid_to_sid(group_sid
, pwd
->pw_gid
);
1554 if (!is_null_sid(group_sid
)) {
1555 struct dom_sid domain_sid
;
1558 /* We need a sid within our domain */
1559 sid_copy(&domain_sid
, group_sid
);
1560 sid_split_rid(&domain_sid
, &rid
);
1561 if (dom_sid_equal(&domain_sid
, get_global_sam_sid())) {
1563 * As shortcut for the expensive lookup_sid call
1564 * compare the domain sid part
1567 case DOMAIN_RID_ADMINS
:
1568 case DOMAIN_RID_USERS
:
1571 need_lookup_sid
= true;
1575 /* Try group mapping */
1578 id
.id
= pwd
->pw_gid
;
1579 id
.type
= ID_TYPE_GID
;
1581 ZERO_STRUCTP(group_sid
);
1582 if (pdb_id_to_sid(&id
, group_sid
)) {
1583 need_lookup_sid
= true;
1588 /* We must verify that this is a valid SID that resolves to a
1589 * group of the correct type */
1590 if (need_lookup_sid
) {
1591 enum lsa_SidType type
= SID_NAME_UNKNOWN
;
1594 DEBUG(10, ("do lookup_sid(%s) for group of user %s\n",
1595 sid_string_dbg(group_sid
), username
));
1597 /* Now check that it's actually a domain group and
1598 * not something else */
1599 lookup_ret
= lookup_sid(tmp_ctx
, group_sid
,
1602 if (lookup_ret
&& (type
== SID_NAME_DOM_GRP
)) {
1606 DEBUG(3, ("Primary group %s for user %s is"
1607 " a %s and not a domain group\n",
1608 sid_string_dbg(group_sid
), username
,
1609 sid_type_lookup(type
)));
1612 /* Everything else, failed.
1613 * Just set it to the 'Domain Users' RID of 513 which will
1614 always resolve to a name */
1615 DEBUG(3, ("Forcing Primary Group to 'Domain Users' for %s\n",
1618 sid_compose(group_sid
, get_global_sam_sid(), DOMAIN_RID_USERS
);
1621 *_pwd
= talloc_move(mem_ctx
, &pwd
);
1622 *_group_sid
= talloc_move(mem_ctx
, &group_sid
);
1623 TALLOC_FREE(tmp_ctx
);
1624 return NT_STATUS_OK
;