4 Copyright (C) Simo Sorce 2006-2008
5 Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005-2007
6 Copyright (C) Nadezhda Ivanova 2009
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/>.
25 * Component: DS Security descriptor module
28 * - Calculate the security descriptor of a newly created object
29 * - Perform sd recalculation on a move operation
30 * - Handle sd modification invariants
32 * Author: Nadezhda Ivanova
36 #include <ldb_module.h>
37 #include "util/dlinklist.h"
38 #include "dsdb/samdb/samdb.h"
39 #include "librpc/ndr/libndr.h"
40 #include "librpc/gen_ndr/ndr_security.h"
41 #include "libcli/security/security.h"
42 #include "dsdb/samdb/ldb_modules/schema.h"
43 #include "auth/auth.h"
44 #include "param/param.h"
47 struct descriptor_data
{
51 struct descriptor_context
{
52 struct ldb_module
*module
;
53 struct ldb_request
*req
;
54 struct ldb_message
*msg
;
55 struct ldb_reply
*search_res
;
56 struct ldb_reply
*search_oc_res
;
57 struct ldb_val
*parentsd_val
;
58 struct ldb_message_element
*sd_element
;
59 struct ldb_val
*sd_val
;
60 int (*step_fn
)(struct descriptor_context
*);
63 static struct dom_sid
*get_default_ag(TALLOC_CTX
*mem_ctx
,
65 struct security_token
*token
,
66 struct ldb_context
*ldb
)
68 TALLOC_CTX
*tmp_ctx
= talloc_new(mem_ctx
);
69 const struct dom_sid
*domain_sid
= samdb_domain_sid(ldb
);
70 struct dom_sid
*da_sid
= dom_sid_add_rid(tmp_ctx
, domain_sid
, DOMAIN_RID_ADMINS
);
71 struct dom_sid
*ea_sid
= dom_sid_add_rid(tmp_ctx
, domain_sid
, DOMAIN_RID_ENTERPRISE_ADMINS
);
72 struct dom_sid
*sa_sid
= dom_sid_add_rid(tmp_ctx
, domain_sid
, DOMAIN_RID_SCHEMA_ADMINS
);
73 struct dom_sid
*dag_sid
;
74 struct ldb_dn
*nc_root
;
77 ret
= dsdb_find_nc_root(ldb
, tmp_ctx
, dn
, &nc_root
);
78 if (ret
!= LDB_SUCCESS
) {
83 if (ldb_dn_compare(nc_root
, ldb_get_schema_basedn(ldb
)) == 0) {
84 if (security_token_has_sid(token
, sa_sid
)) {
85 dag_sid
= dom_sid_dup(mem_ctx
, sa_sid
);
86 } else if (security_token_has_sid(token
, ea_sid
)) {
87 dag_sid
= dom_sid_dup(mem_ctx
, ea_sid
);
88 } else if (security_token_has_sid(token
, da_sid
)) {
89 dag_sid
= dom_sid_dup(mem_ctx
, da_sid
);
93 } else if (ldb_dn_compare(nc_root
, ldb_get_config_basedn(ldb
)) == 0) {
94 if (security_token_has_sid(token
, ea_sid
)) {
95 dag_sid
= dom_sid_dup(mem_ctx
, ea_sid
);
96 } else if (security_token_has_sid(token
, da_sid
)) {
97 dag_sid
= dom_sid_dup(mem_ctx
, da_sid
);
101 } else if (ldb_dn_compare(nc_root
, ldb_get_default_basedn(ldb
)) == 0) {
102 if (security_token_has_sid(token
, da_sid
)) {
103 dag_sid
= dom_sid_dup(mem_ctx
, da_sid
);
104 } else if (security_token_has_sid(token
, ea_sid
)) {
105 dag_sid
= dom_sid_dup(mem_ctx
, ea_sid
);
113 talloc_free(tmp_ctx
);
117 static struct security_descriptor
*get_sd_unpacked(struct ldb_module
*module
, TALLOC_CTX
*mem_ctx
,
118 const struct dsdb_class
*objectclass
)
120 struct ldb_context
*ldb
= ldb_module_get_ctx(module
);
121 struct security_descriptor
*sd
;
122 const struct dom_sid
*domain_sid
= samdb_domain_sid(ldb
);
124 if (!objectclass
->defaultSecurityDescriptor
|| !domain_sid
) {
128 sd
= sddl_decode(mem_ctx
,
129 objectclass
->defaultSecurityDescriptor
,
134 static struct dom_sid
*get_default_group(TALLOC_CTX
*mem_ctx
,
135 struct ldb_context
*ldb
,
138 if (dsdb_functional_level(ldb
) >= DS_DOMAIN_FUNCTION_2008
) {
145 static struct security_descriptor
*descr_handle_sd_flags(TALLOC_CTX
*mem_ctx
,
146 struct security_descriptor
*new_sd
,
147 struct security_descriptor
*old_sd
,
150 struct security_descriptor
*final_sd
;
151 /* if there is no control or control == 0 modify everything */
156 final_sd
= talloc_zero(mem_ctx
, struct security_descriptor
);
157 final_sd
->revision
= SECURITY_DESCRIPTOR_REVISION_1
;
158 final_sd
->type
= SEC_DESC_SELF_RELATIVE
;
160 if (sd_flags
& (SECINFO_OWNER
)) {
161 final_sd
->owner_sid
= talloc_memdup(mem_ctx
, new_sd
->owner_sid
, sizeof(struct dom_sid
));
162 final_sd
->type
|= new_sd
->type
& SEC_DESC_OWNER_DEFAULTED
;
165 final_sd
->owner_sid
= talloc_memdup(mem_ctx
, old_sd
->owner_sid
, sizeof(struct dom_sid
));
166 final_sd
->type
|= old_sd
->type
& SEC_DESC_OWNER_DEFAULTED
;
169 if (sd_flags
& (SECINFO_GROUP
)) {
170 final_sd
->group_sid
= talloc_memdup(mem_ctx
, new_sd
->group_sid
, sizeof(struct dom_sid
));
171 final_sd
->type
|= new_sd
->type
& SEC_DESC_GROUP_DEFAULTED
;
174 final_sd
->group_sid
= talloc_memdup(mem_ctx
, old_sd
->group_sid
, sizeof(struct dom_sid
));
175 final_sd
->type
|= old_sd
->type
& SEC_DESC_GROUP_DEFAULTED
;
178 if (sd_flags
& (SECINFO_SACL
)) {
179 final_sd
->sacl
= security_acl_dup(mem_ctx
,new_sd
->sacl
);
180 final_sd
->type
|= new_sd
->type
& (SEC_DESC_SACL_PRESENT
|
181 SEC_DESC_SACL_DEFAULTED
|SEC_DESC_SACL_AUTO_INHERIT_REQ
|
182 SEC_DESC_SACL_AUTO_INHERITED
|SEC_DESC_SACL_PROTECTED
|
183 SEC_DESC_SERVER_SECURITY
);
185 else if (old_sd
&& old_sd
->sacl
) {
186 final_sd
->sacl
= security_acl_dup(mem_ctx
,old_sd
->sacl
);
187 final_sd
->type
|= old_sd
->type
& (SEC_DESC_SACL_PRESENT
|
188 SEC_DESC_SACL_DEFAULTED
|SEC_DESC_SACL_AUTO_INHERIT_REQ
|
189 SEC_DESC_SACL_AUTO_INHERITED
|SEC_DESC_SACL_PROTECTED
|
190 SEC_DESC_SERVER_SECURITY
);
193 if (sd_flags
& (SECINFO_DACL
)) {
194 final_sd
->dacl
= security_acl_dup(mem_ctx
,new_sd
->dacl
);
195 final_sd
->type
|= new_sd
->type
& (SEC_DESC_DACL_PRESENT
|
196 SEC_DESC_DACL_DEFAULTED
|SEC_DESC_DACL_AUTO_INHERIT_REQ
|
197 SEC_DESC_DACL_AUTO_INHERITED
|SEC_DESC_DACL_PROTECTED
|
198 SEC_DESC_DACL_TRUSTED
);
200 else if (old_sd
&& old_sd
->dacl
) {
201 final_sd
->dacl
= security_acl_dup(mem_ctx
,old_sd
->dacl
);
202 final_sd
->type
|= old_sd
->type
& (SEC_DESC_DACL_PRESENT
|
203 SEC_DESC_DACL_DEFAULTED
|SEC_DESC_DACL_AUTO_INHERIT_REQ
|
204 SEC_DESC_DACL_AUTO_INHERITED
|SEC_DESC_DACL_PROTECTED
|
205 SEC_DESC_DACL_TRUSTED
);
207 /* not so sure about this */
208 final_sd
->type
|= new_sd
->type
& SEC_DESC_RM_CONTROL_VALID
;
212 static DATA_BLOB
*get_new_descriptor(struct ldb_module
*module
,
215 const struct dsdb_class
*objectclass
,
216 const struct ldb_val
*parent
,
217 const struct ldb_val
*object
,
218 const struct ldb_val
*old_sd
,
221 struct security_descriptor
*user_descriptor
= NULL
, *parent_descriptor
= NULL
;
222 struct security_descriptor
*old_descriptor
= NULL
;
223 struct security_descriptor
*new_sd
, *final_sd
;
224 DATA_BLOB
*linear_sd
;
225 enum ndr_err_code ndr_err
;
226 struct ldb_context
*ldb
= ldb_module_get_ctx(module
);
227 struct auth_session_info
*session_info
228 = ldb_get_opaque(ldb
, "sessionInfo");
229 const struct dom_sid
*domain_sid
= samdb_domain_sid(ldb
);
231 struct dom_sid
*default_owner
;
232 struct dom_sid
*default_group
;
235 user_descriptor
= talloc(mem_ctx
, struct security_descriptor
);
236 if (!user_descriptor
) {
239 ndr_err
= ndr_pull_struct_blob(object
, user_descriptor
,
241 (ndr_pull_flags_fn_t
)ndr_pull_security_descriptor
);
243 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err
)) {
244 talloc_free(user_descriptor
);
248 user_descriptor
= get_sd_unpacked(module
, mem_ctx
, objectclass
);
252 old_descriptor
= talloc(mem_ctx
, struct security_descriptor
);
253 if (!old_descriptor
) {
256 ndr_err
= ndr_pull_struct_blob(old_sd
, old_descriptor
,
258 (ndr_pull_flags_fn_t
)ndr_pull_security_descriptor
);
260 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err
)) {
261 talloc_free(old_descriptor
);
267 parent_descriptor
= talloc(mem_ctx
, struct security_descriptor
);
268 if (!parent_descriptor
) {
271 ndr_err
= ndr_pull_struct_blob(parent
, parent_descriptor
,
273 (ndr_pull_flags_fn_t
)ndr_pull_security_descriptor
);
275 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err
)) {
276 talloc_free(parent_descriptor
);
281 default_owner
= get_default_ag(mem_ctx
, dn
,
282 session_info
->security_token
, ldb
);
283 default_group
= get_default_group(mem_ctx
, ldb
, default_owner
);
284 new_sd
= create_security_descriptor(mem_ctx
, parent_descriptor
, user_descriptor
, true,
285 NULL
, SEC_DACL_AUTO_INHERIT
|SEC_SACL_AUTO_INHERIT
,
286 session_info
->security_token
,
287 default_owner
, default_group
,
288 map_generic_rights_ds
);
292 final_sd
= descr_handle_sd_flags(mem_ctx
, new_sd
, old_descriptor
, sd_flags
);
298 if (final_sd
->dacl
) {
299 final_sd
->dacl
->revision
= SECURITY_ACL_REVISION_ADS
;
301 if (final_sd
->sacl
) {
302 final_sd
->sacl
->revision
= SECURITY_ACL_REVISION_ADS
;
305 sddl_sd
= sddl_encode(mem_ctx
, final_sd
, domain_sid
);
306 DEBUG(10, ("Object %s created with desriptor %s\n\n", ldb_dn_get_linearized(dn
), sddl_sd
));
308 linear_sd
= talloc(mem_ctx
, DATA_BLOB
);
313 ndr_err
= ndr_push_struct_blob(linear_sd
, mem_ctx
,
315 (ndr_push_flags_fn_t
)ndr_push_security_descriptor
);
316 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err
)) {
323 static DATA_BLOB
*descr_get_descriptor_to_show(struct ldb_module
*module
,
328 struct security_descriptor
*old_sd
, *final_sd
;
329 DATA_BLOB
*linear_sd
;
330 enum ndr_err_code ndr_err
;
332 old_sd
= talloc(mem_ctx
, struct security_descriptor
);
336 ndr_err
= ndr_pull_struct_blob(sd
, old_sd
,
338 (ndr_pull_flags_fn_t
)ndr_pull_security_descriptor
);
340 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err
)) {
345 final_sd
= descr_handle_sd_flags(mem_ctx
, old_sd
, NULL
, sd_flags
);
351 linear_sd
= talloc(mem_ctx
, DATA_BLOB
);
356 ndr_err
= ndr_push_struct_blob(linear_sd
, mem_ctx
,
358 (ndr_push_flags_fn_t
)ndr_push_security_descriptor
);
359 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err
)) {
366 static struct descriptor_context
*descriptor_init_context(struct ldb_module
*module
,
367 struct ldb_request
*req
)
369 struct ldb_context
*ldb
;
370 struct descriptor_context
*ac
;
372 ldb
= ldb_module_get_ctx(module
);
374 ac
= talloc_zero(req
, struct descriptor_context
);
376 ldb_set_errstring(ldb
, "Out of Memory");
385 static int descriptor_search_callback(struct ldb_request
*req
, struct ldb_reply
*ares
)
387 struct descriptor_context
*ac
;
388 struct ldb_control
*sd_control
;
389 struct ldb_val
*sd_val
= NULL
;
390 struct ldb_message_element
*sd_el
;
393 uint32_t sd_flags
= 0;
395 ac
= talloc_get_type(req
->context
, struct descriptor_context
);
398 ret
= LDB_ERR_OPERATIONS_ERROR
;
401 if (ares
->error
!= LDB_SUCCESS
) {
402 return ldb_module_done(ac
->req
, ares
->controls
,
403 ares
->response
, ares
->error
);
406 sd_control
= ldb_request_get_control(ac
->req
, LDB_CONTROL_SD_FLAGS_OID
);
408 struct ldb_sd_flags_control
*sdctr
= (struct ldb_sd_flags_control
*)sd_control
->data
;
409 sd_flags
= sdctr
->secinfo_flags
;
410 /* we only care for the last 4 bits */
411 sd_flags
= sd_flags
& 0x0000000F;
413 /* MS-ADTS 3.1.1.3.4.1.11 says that no bits
419 switch (ares
->type
) {
420 case LDB_REPLY_ENTRY
:
422 sd_el
= ldb_msg_find_element(ares
->message
, "nTSecurityDescriptor");
424 sd_val
= sd_el
->values
;
428 show_sd
= descr_get_descriptor_to_show(ac
->module
, ac
->req
,
431 ret
= LDB_ERR_OPERATIONS_ERROR
;
434 ldb_msg_remove_attr(ares
->message
, "nTSecurityDescriptor");
435 ret
= ldb_msg_add_steal_value(ares
->message
, "nTSecurityDescriptor", show_sd
);
436 if (ret
!= LDB_SUCCESS
) {
440 return ldb_module_send_entry(ac
->req
, ares
->message
, ares
->controls
);
442 case LDB_REPLY_REFERRAL
:
443 return ldb_module_send_referral(ac
->req
, ares
->referral
);
446 return ldb_module_done(ac
->req
, ares
->controls
,
447 ares
->response
, ares
->error
);
452 return ldb_module_done(ac
->req
, NULL
, NULL
, ret
);
455 static int descriptor_add(struct ldb_module
*module
, struct ldb_request
*req
)
457 struct ldb_context
*ldb
;
458 struct ldb_request
*add_req
;
459 struct ldb_message
*msg
;
460 struct ldb_result
*parent_res
;
461 const struct ldb_val
*parent_sd
= NULL
;
462 const struct ldb_val
*user_sd
;
463 struct ldb_dn
*parent_dn
, *dn
, *nc_root
;
464 struct ldb_message_element
*objectclass_element
, *sd_element
;
466 const struct dsdb_schema
*schema
;
468 const struct dsdb_class
*objectclass
;
469 static const char * const parent_attrs
[] = { "nTSecurityDescriptor", NULL
};
471 ldb
= ldb_module_get_ctx(module
);
472 dn
= req
->op
.add
.message
->dn
;
473 user_sd
= ldb_msg_find_ldb_val(req
->op
.add
.message
, "nTSecurityDescriptor");
474 sd_element
= ldb_msg_find_element(req
->op
.add
.message
, "nTSecurityDescriptor");
475 /* nTSecurityDescriptor without a value is an error, letting through so it is handled */
476 if (user_sd
== NULL
&& sd_element
) {
477 return ldb_next_request(module
, req
);
480 ldb_debug(ldb
, LDB_DEBUG_TRACE
,"descriptor_add: %s\n", ldb_dn_get_linearized(dn
));
482 /* do not manipulate our control entries */
483 if (ldb_dn_is_special(dn
)) {
484 return ldb_next_request(module
, req
);
487 /* if the object has a parent, retrieve its SD to
488 * use for calculation. Unfortunately we do not yet have
489 * instanceType, so we use dsdb_find_nc_root. */
490 parent_dn
= ldb_dn_get_parent(req
, dn
);
491 if (parent_dn
== NULL
) {
495 ret
= dsdb_find_nc_root(ldb
, req
, dn
, &nc_root
);
496 if (ret
!= LDB_SUCCESS
) {
497 ldb_debug(ldb
, LDB_DEBUG_TRACE
,"descriptor_add: Could not find NC root for %s\n",
498 ldb_dn_get_linearized(dn
));
502 if (ldb_dn_compare(dn
, nc_root
) != 0) {
503 /* we aren't any NC */
504 ret
= dsdb_module_search_dn(module
, req
, &parent_res
, parent_dn
,
506 DSDB_FLAG_NEXT_MODULE
,
508 if (ret
!= LDB_SUCCESS
) {
509 ldb_debug(ldb
, LDB_DEBUG_TRACE
,"descriptor_add: Could not find SD for %s\n",
510 ldb_dn_get_linearized(parent_dn
));
513 if (parent_res
->count
!= 1) {
514 return ldb_operr(ldb
);
516 parent_sd
= ldb_msg_find_ldb_val(parent_res
->msgs
[0], "nTSecurityDescriptor");
519 schema
= dsdb_get_schema(ldb
, req
);
521 objectclass_element
= ldb_msg_find_element(req
->op
.add
.message
, "objectClass");
522 if (objectclass_element
== NULL
) {
523 return ldb_operr(ldb
);
526 objectclass
= get_last_structural_class(schema
, objectclass_element
, req
);
527 if (objectclass
== NULL
) {
528 return ldb_operr(ldb
);
531 sd
= get_new_descriptor(module
, dn
, req
,
532 objectclass
, parent_sd
,
534 msg
= ldb_msg_copy_shallow(req
, req
->op
.add
.message
);
536 if (sd_element
!= NULL
) {
537 sd_element
->values
[0] = *sd
;
539 ret
= ldb_msg_add_steal_value(msg
,
540 "nTSecurityDescriptor",
542 if (ret
!= LDB_SUCCESS
) {
548 ret
= ldb_build_add_req(&add_req
, ldb
, req
,
551 req
, dsdb_next_callback
,
553 LDB_REQ_SET_LOCATION(add_req
);
554 if (ret
!= LDB_SUCCESS
) {
555 return ldb_error(ldb
, ret
,
556 "descriptor_add: Error creating new add request.");
559 return ldb_next_request(module
, add_req
);
562 static int descriptor_modify(struct ldb_module
*module
, struct ldb_request
*req
)
564 struct ldb_context
*ldb
;
565 struct ldb_control
*sd_recalculate_control
, *sd_flags_control
;
566 struct ldb_request
*mod_req
;
567 struct ldb_message
*msg
;
568 struct ldb_result
*current_res
, *parent_res
;
569 const struct ldb_val
*old_sd
= NULL
;
570 const struct ldb_val
*parent_sd
= NULL
;
571 const struct ldb_val
*user_sd
;
572 struct ldb_dn
*parent_dn
, *dn
;
573 struct ldb_message_element
*objectclass_element
;
575 uint32_t instanceType
, sd_flags
= 0;
576 const struct dsdb_schema
*schema
;
578 const struct dsdb_class
*objectclass
;
579 static const char * const parent_attrs
[] = { "nTSecurityDescriptor", NULL
};
580 static const char * const current_attrs
[] = { "nTSecurityDescriptor",
582 "objectClass", NULL
};
583 ldb
= ldb_module_get_ctx(module
);
584 dn
= req
->op
.mod
.message
->dn
;
585 user_sd
= ldb_msg_find_ldb_val(req
->op
.mod
.message
, "nTSecurityDescriptor");
586 /* This control forces the recalculation of the SD also when
587 * no modification is performed. */
588 sd_recalculate_control
= ldb_request_get_control(req
,
589 LDB_CONTROL_RECALCULATE_SD_OID
);
590 if (!user_sd
&& !sd_recalculate_control
) {
591 return ldb_next_request(module
, req
);
594 ldb_debug(ldb
, LDB_DEBUG_TRACE
,"descriptor_modify: %s\n", ldb_dn_get_linearized(dn
));
596 /* do not manipulate our control entries */
597 if (ldb_dn_is_special(dn
)) {
598 return ldb_next_request(module
, req
);
601 ret
= dsdb_module_search_dn(module
, req
, ¤t_res
, dn
,
603 DSDB_FLAG_NEXT_MODULE
,
605 if (ret
!= LDB_SUCCESS
) {
606 ldb_debug(ldb
, LDB_DEBUG_ERROR
,"descriptor_modify: Could not find %s\n",
607 ldb_dn_get_linearized(dn
));
611 instanceType
= ldb_msg_find_attr_as_uint(current_res
->msgs
[0],
613 /* if the object has a parent, retrieve its SD to
614 * use for calculation */
615 if (!ldb_dn_is_null(current_res
->msgs
[0]->dn
) &&
616 !(instanceType
& INSTANCE_TYPE_IS_NC_HEAD
)) {
617 parent_dn
= ldb_dn_get_parent(req
, dn
);
618 if (parent_dn
== NULL
) {
621 ret
= dsdb_module_search_dn(module
, req
, &parent_res
, parent_dn
,
623 DSDB_FLAG_NEXT_MODULE
,
625 if (ret
!= LDB_SUCCESS
) {
626 ldb_debug(ldb
, LDB_DEBUG_ERROR
, "descriptor_modify: Could not find SD for %s\n",
627 ldb_dn_get_linearized(parent_dn
));
630 if (parent_res
->count
!= 1) {
631 return ldb_operr(ldb
);
633 parent_sd
= ldb_msg_find_ldb_val(parent_res
->msgs
[0], "nTSecurityDescriptor");
635 sd_flags_control
= ldb_request_get_control(req
, LDB_CONTROL_SD_FLAGS_OID
);
637 schema
= dsdb_get_schema(ldb
, req
);
639 objectclass_element
= ldb_msg_find_element(current_res
->msgs
[0], "objectClass");
640 if (objectclass_element
== NULL
) {
641 return ldb_operr(ldb
);
644 objectclass
= get_last_structural_class(schema
, objectclass_element
, req
);
645 if (objectclass
== NULL
) {
646 return ldb_operr(ldb
);
649 if (sd_flags_control
) {
650 struct ldb_sd_flags_control
*sdctr
= (struct ldb_sd_flags_control
*)sd_flags_control
->data
;
651 sd_flags
= sdctr
->secinfo_flags
;
652 /* we only care for the last 4 bits */
653 sd_flags
= sd_flags
& 0x0000000F;
656 old_sd
= ldb_msg_find_ldb_val(current_res
->msgs
[0], "nTSecurityDescriptor");
659 sd
= get_new_descriptor(module
, dn
, req
,
660 objectclass
, parent_sd
,
661 user_sd
, old_sd
, sd_flags
);
662 msg
= ldb_msg_copy_shallow(req
, req
->op
.mod
.message
);
664 struct ldb_message_element
*sd_element
;
665 if (user_sd
!= NULL
) {
666 sd_element
= ldb_msg_find_element(msg
,
667 "nTSecurityDescriptor");
668 sd_element
->values
[0] = *sd
;
669 } else if (sd_recalculate_control
!= NULL
) {
670 /* In this branch we really do force the recalculation
672 ldb_msg_remove_attr(msg
, "nTSecurityDescriptor");
674 ret
= ldb_msg_add_steal_value(msg
,
675 "nTSecurityDescriptor",
677 if (ret
!= LDB_SUCCESS
) {
678 return ldb_error(ldb
, ret
,
679 "descriptor_modify: Could not replace SD value in message.");
681 sd_element
= ldb_msg_find_element(msg
,
682 "nTSecurityDescriptor");
683 sd_element
->flags
= LDB_FLAG_MOD_REPLACE
;
687 /* mark the controls as non-critical since we've handled them */
688 if (sd_flags_control
!= NULL
) {
689 sd_flags_control
->critical
= 0;
691 if (sd_recalculate_control
!= NULL
) {
692 sd_recalculate_control
->critical
= 0;
695 ret
= ldb_build_mod_req(&mod_req
, ldb
, req
,
701 LDB_REQ_SET_LOCATION(mod_req
);
702 if (ret
!= LDB_SUCCESS
) {
706 return ldb_next_request(module
, mod_req
);
709 static int descriptor_search(struct ldb_module
*module
, struct ldb_request
*req
)
712 struct ldb_context
*ldb
;
713 struct ldb_control
*sd_control
;
714 struct ldb_request
*down_req
;
715 struct descriptor_context
*ac
;
717 sd_control
= ldb_request_get_control(req
, LDB_CONTROL_SD_FLAGS_OID
);
719 return ldb_next_request(module
, req
);
722 ldb
= ldb_module_get_ctx(module
);
723 ac
= descriptor_init_context(module
, req
);
725 return ldb_operr(ldb
);
728 ret
= ldb_build_search_req_ex(&down_req
, ldb
, ac
,
730 req
->op
.search
.scope
,
732 req
->op
.search
.attrs
,
734 ac
, descriptor_search_callback
,
736 LDB_REQ_SET_LOCATION(down_req
);
737 if (ret
!= LDB_SUCCESS
) {
740 /* mark it as handled */
742 sd_control
->critical
= 0;
745 return ldb_next_request(ac
->module
, down_req
);
748 static int descriptor_rename(struct ldb_module
*module
, struct ldb_request
*req
)
750 struct ldb_context
*ldb
= ldb_module_get_ctx(module
);
751 ldb_debug(ldb
, LDB_DEBUG_TRACE
,"descriptor_rename: %s\n", ldb_dn_get_linearized(req
->op
.rename
.olddn
));
753 /* do not manipulate our control entries */
754 if (ldb_dn_is_special(req
->op
.rename
.olddn
)) {
755 return ldb_next_request(module
, req
);
758 return ldb_next_request(module
, req
);
761 static int descriptor_init(struct ldb_module
*module
)
763 int ret
= ldb_mod_register_control(module
, LDB_CONTROL_SD_FLAGS_OID
);
764 struct ldb_context
*ldb
= ldb_module_get_ctx(module
);
765 if (ret
!= LDB_SUCCESS
) {
766 ldb_debug(ldb
, LDB_DEBUG_ERROR
,
767 "descriptor: Unable to register control with rootdse!\n");
768 return ldb_operr(ldb
);
770 return ldb_next_init(module
);
774 static const struct ldb_module_ops ldb_descriptor_module_ops
= {
775 .name
= "descriptor",
776 .search
= descriptor_search
,
777 .add
= descriptor_add
,
778 .modify
= descriptor_modify
,
779 .rename
= descriptor_rename
,
780 .init_context
= descriptor_init
783 int ldb_descriptor_module_init(const char *version
)
785 LDB_MODULE_CHECK_VERSION(version
);
786 return ldb_register_module(&ldb_descriptor_module_ops
);