4 Copyright (C) Andrew Bartlett 2010
5 Copyright (C) Andrew Tridgell 2010
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>.
22 add objectSid to users and groups using samba3 nextRid method
26 #include "libcli/ldap/ldap_ndr.h"
27 #include "ldb_module.h"
28 #include "dsdb/samdb/samdb.h"
29 #include "dsdb/samdb/ldb_modules/util.h"
30 #include "libcli/security/security.h"
31 #include "librpc/gen_ndr/ndr_security.h"
32 #include "../lib/util/util_ldb.h"
34 #include "param/param.h"
37 RID algorithm from pdb_ldap.c in source3/passdb/
38 (loosely based on Volkers code)
40 static int samba3sid_next_sid(struct ldb_module
*module
,
41 TALLOC_CTX
*mem_ctx
, char **sid
)
43 TALLOC_CTX
*tmp_ctx
= talloc_new(mem_ctx
);
44 struct ldb_result
*res
;
45 const char *attrs
[] = { "sambaNextRid", "sambaNextUserRid",
46 "sambaNextGroupRid", "sambaSID", NULL
};
48 struct ldb_context
*ldb
= ldb_module_get_ctx(module
);
49 struct ldb_message
*msg
;
50 uint32_t sambaNextRid
, sambaNextGroupRid
, sambaNextUserRid
, rid
;
53 ret
= dsdb_module_search(module
, tmp_ctx
, &res
, NULL
, LDB_SCOPE_SUBTREE
,
55 DSDB_FLAG_NEXT_MODULE
|
56 DSDB_SEARCH_SEARCH_ALL_PARTITIONS
,
57 "(&(objectClass=sambaDomain)(sambaDomainName=%s))",
58 lpcfg_sam_name(ldb_get_opaque(ldb
, "loadparm")));
59 if (ret
!= LDB_SUCCESS
) {
60 ldb_asprintf_errstring(ldb
,
62 ": Failed to find domain object - %s",
67 if (res
->count
!= 1) {
68 ldb_asprintf_errstring(ldb
,
70 ": Expected exactly 1 domain object - got %u",
73 return LDB_ERR_OPERATIONS_ERROR
;
77 sambaNextRid
= ldb_msg_find_attr_as_uint(msg
, "sambaNextRid",
79 sambaNextUserRid
= ldb_msg_find_attr_as_uint(msg
, "sambaNextUserRid",
81 sambaNextGroupRid
= ldb_msg_find_attr_as_uint(msg
, "sambaNextGroupRid",
83 sambaSID
= ldb_msg_find_attr_as_string(msg
, "sambaSID", NULL
);
85 if (sambaSID
== NULL
) {
86 ldb_asprintf_errstring(ldb
,
88 ": No sambaSID in %s",
89 ldb_dn_get_linearized(msg
->dn
));
91 return LDB_ERR_OPERATIONS_ERROR
;
94 /* choose the highest of the 3 - see pdb_ldap.c for an
97 if ((sambaNextUserRid
!= (uint32_t) -1) && (sambaNextUserRid
> rid
)) {
98 rid
= sambaNextUserRid
;
100 if ((sambaNextGroupRid
!= (uint32_t) -1) && (sambaNextGroupRid
> rid
)) {
101 rid
= sambaNextGroupRid
;
103 if (rid
== (uint32_t) -1) {
104 ldb_asprintf_errstring(ldb
,
106 ": No sambaNextRid in %s",
107 ldb_dn_get_linearized(msg
->dn
));
108 talloc_free(tmp_ctx
);
109 return LDB_ERR_OPERATIONS_ERROR
;
112 /* sambaNextRid is actually the previous RID .... */
115 (*sid
) = talloc_asprintf(tmp_ctx
, "%s-%u", sambaSID
, rid
);
117 talloc_free(tmp_ctx
);
118 return ldb_module_oom(module
);
121 ret
= dsdb_module_constrainted_update_uint32(module
, msg
->dn
,
123 &sambaNextRid
, &rid
);
124 if (ret
!= LDB_SUCCESS
) {
125 ldb_asprintf_errstring(ldb
,
127 ": Failed to update sambaNextRid - %s",
129 talloc_free(tmp_ctx
);
133 talloc_steal(mem_ctx
, *sid
);
134 talloc_free(tmp_ctx
);
141 static int samba3sid_add(struct ldb_module
*module
, struct ldb_request
*req
)
143 struct ldb_context
*ldb
;
145 const struct ldb_message
*msg
= req
->op
.add
.message
;
146 struct ldb_message
*new_msg
;
148 struct ldb_request
*new_req
;
150 ldb
= ldb_module_get_ctx(module
);
152 /* do not manipulate our control entries */
153 if (ldb_dn_is_special(req
->op
.add
.message
->dn
)) {
154 return ldb_next_request(module
, req
);
157 if (!samdb_find_attribute(ldb
, msg
, "objectclass", "posixAccount") &&
158 !samdb_find_attribute(ldb
, msg
, "objectclass", "posixGroup")) {
159 /* its not a user or a group */
160 return ldb_next_request(module
, req
);
163 if (ldb_msg_find_element(msg
, "sambaSID")) {
164 /* a SID was supplied */
165 return ldb_next_request(module
, req
);
168 new_msg
= ldb_msg_copy_shallow(req
, req
->op
.add
.message
);
170 return ldb_module_oom(module
);
173 ret
= samba3sid_next_sid(module
, new_msg
, &sid
);
174 if (ret
!= LDB_SUCCESS
) {
178 ret
= ldb_msg_add_steal_string(new_msg
, "sambaSID", sid
);
179 if (ret
!= LDB_SUCCESS
) {
183 ret
= ldb_build_add_req(&new_req
, ldb
, req
,
186 req
, dsdb_next_callback
,
188 LDB_REQ_SET_LOCATION(new_req
);
189 if (ret
!= LDB_SUCCESS
) {
193 return ldb_next_request(module
, new_req
);
196 _PUBLIC_
const struct ldb_module_ops ldb_samba3sid_module_ops
= {
198 .add
= samba3sid_add
,