4 Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005
5 Copyright (C) Simo Sorce 2004-2008
6 Copyright (C) Matthias Dieter Wallnöfer 2009-2011
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: ldb samldb module
27 * Description: various internal DSDB triggers - most for SAM specific objects
33 #include "libcli/ldap/ldap_ndr.h"
34 #include "ldb_module.h"
35 #include "dsdb/samdb/samdb.h"
36 #include "dsdb/samdb/ldb_modules/util.h"
37 #include "dsdb/samdb/ldb_modules/ridalloc.h"
38 #include "libcli/security/security.h"
39 #include "librpc/gen_ndr/ndr_security.h"
41 #include "param/param.h"
42 #include "libds/common/flag_mapping.h"
46 typedef int (*samldb_step_fn_t)(struct samldb_ctx *);
49 struct samldb_step *next;
54 struct ldb_module *module;
55 struct ldb_request *req;
57 /* used for add operations */
60 /* the resulting message */
61 struct ldb_message *msg;
63 /* used in "samldb_find_for_defaultObjectCategory" */
64 struct ldb_dn *dn, *res_dn;
66 /* all the async steps necessary to complete the operation */
67 struct samldb_step *steps;
68 struct samldb_step *curstep;
70 /* If someone set an ares to forward controls and response back to the caller */
71 struct ldb_reply *ares;
74 static struct samldb_ctx *samldb_ctx_init(struct ldb_module *module,
75 struct ldb_request *req)
77 struct ldb_context *ldb;
78 struct samldb_ctx *ac;
80 ldb = ldb_module_get_ctx(module);
82 ac = talloc_zero(req, struct samldb_ctx);
94 static int samldb_add_step(struct samldb_ctx *ac, samldb_step_fn_t fn)
96 struct samldb_step *step, *stepper;
98 step = talloc_zero(ac, struct samldb_step);
100 return ldb_oom(ldb_module_get_ctx(ac->module));
105 if (ac->steps == NULL) {
109 if (ac->curstep == NULL)
110 return ldb_operr(ldb_module_get_ctx(ac->module));
111 for (stepper = ac->curstep; stepper->next != NULL;
112 stepper = stepper->next);
113 stepper->next = step;
119 static int samldb_first_step(struct samldb_ctx *ac)
121 if (ac->steps == NULL) {
122 return ldb_operr(ldb_module_get_ctx(ac->module));
125 ac->curstep = ac->steps;
126 return ac->curstep->fn(ac);
129 static int samldb_next_step(struct samldb_ctx *ac)
131 if (ac->curstep->next) {
132 ac->curstep = ac->curstep->next;
133 return ac->curstep->fn(ac);
136 /* We exit the samldb module here. If someone set an "ares" to forward
137 * controls and response back to the caller, use them. */
139 return ldb_module_done(ac->req, ac->ares->controls,
140 ac->ares->response, LDB_SUCCESS);
142 return ldb_module_done(ac->req, NULL, NULL, LDB_SUCCESS);
147 /* sAMAccountName handling */
149 static int samldb_generate_sAMAccountName(struct ldb_context *ldb,
150 struct ldb_message *msg)
154 /* Format: $000000-000000000000 */
156 name = talloc_asprintf(msg, "$%.6X-%.6X%.6X",
157 (unsigned int)generate_random(),
158 (unsigned int)generate_random(),
159 (unsigned int)generate_random());
163 return ldb_msg_add_steal_string(msg, "sAMAccountName", name);
166 static int samldb_check_sAMAccountName(struct samldb_ctx *ac)
168 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
171 struct ldb_result *res;
172 const char *noattrs[] = { NULL };
174 if (ldb_msg_find_element(ac->msg, "sAMAccountName") == NULL) {
175 ret = samldb_generate_sAMAccountName(ldb, ac->msg);
176 if (ret != LDB_SUCCESS) {
181 name = ldb_msg_find_attr_as_string(ac->msg, "sAMAccountName", NULL);
183 /* The "sAMAccountName" cannot be nothing */
184 ldb_set_errstring(ldb,
185 "samldb: Empty account names aren't allowed!");
186 return LDB_ERR_CONSTRAINT_VIOLATION;
189 ret = dsdb_module_search(ac->module, ac, &res,
190 NULL, LDB_SCOPE_SUBTREE, noattrs,
191 DSDB_FLAG_NEXT_MODULE,
193 "(sAMAccountName=%s)",
194 ldb_binary_encode_string(ac, name));
195 if (ret != LDB_SUCCESS) {
198 if (res->count != 0) {
199 ldb_asprintf_errstring(ldb,
200 "samldb: Account name (sAMAccountName) '%s' already in use!",
203 return LDB_ERR_ENTRY_ALREADY_EXISTS;
207 return samldb_next_step(ac);
211 static bool samldb_msg_add_sid(struct ldb_message *msg,
213 const struct dom_sid *sid)
216 enum ndr_err_code ndr_err;
218 ndr_err = ndr_push_struct_blob(&v, msg, sid,
219 (ndr_push_flags_fn_t)ndr_push_dom_sid);
220 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
223 return (ldb_msg_add_value(msg, name, &v, NULL) == 0);
227 /* allocate a SID using our RID Set */
228 static int samldb_allocate_sid(struct samldb_ctx *ac)
232 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
235 ret = ridalloc_allocate_rid(ac->module, &rid, ac->req);
236 if (ret != LDB_SUCCESS) {
240 sid = dom_sid_add_rid(ac, samdb_domain_sid(ldb), rid);
242 return ldb_module_oom(ac->module);
245 if ( ! samldb_msg_add_sid(ac->msg, "objectSid", sid)) {
246 return ldb_operr(ldb);
249 return samldb_next_step(ac);
253 see if a krbtgt_number is available
255 static bool samldb_krbtgtnumber_available(struct samldb_ctx *ac,
256 uint32_t krbtgt_number)
258 TALLOC_CTX *tmp_ctx = talloc_new(ac);
259 struct ldb_result *res;
260 const char *no_attrs[] = { NULL };
263 ret = dsdb_module_search(ac->module, tmp_ctx, &res, NULL,
264 LDB_SCOPE_SUBTREE, no_attrs,
265 DSDB_FLAG_NEXT_MODULE,
267 "(msDC-SecondaryKrbTgtNumber=%u)",
269 if (ret == LDB_SUCCESS && res->count == 0) {
270 talloc_free(tmp_ctx);
273 talloc_free(tmp_ctx);
277 /* special handling for add in RODC join */
278 static int samldb_rodc_add(struct samldb_ctx *ac)
280 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
281 uint32_t krbtgt_number, i_start, i;
284 struct ldb_val newpass_utf16;
286 /* find a unused msDC-SecondaryKrbTgtNumber */
287 i_start = generate_random() & 0xFFFF;
292 for (i=i_start; i<=0xFFFF; i++) {
293 if (samldb_krbtgtnumber_available(ac, i)) {
298 for (i=1; i<i_start; i++) {
299 if (samldb_krbtgtnumber_available(ac, i)) {
305 ldb_asprintf_errstring(ldb,
306 "%08X: Unable to find available msDS-SecondaryKrbTgtNumber",
307 W_ERROR_V(WERR_NO_SYSTEM_RESOURCES));
308 return LDB_ERR_OTHER;
311 ret = ldb_msg_add_empty(ac->msg, "msDS-SecondaryKrbTgtNumber",
312 LDB_FLAG_INTERNAL_DISABLE_VALIDATION, NULL);
313 if (ret != LDB_SUCCESS) {
314 return ldb_operr(ldb);
317 ret = samdb_msg_add_uint(ldb, ac->msg, ac->msg,
318 "msDS-SecondaryKrbTgtNumber", krbtgt_number);
319 if (ret != LDB_SUCCESS) {
320 return ldb_operr(ldb);
323 ret = ldb_msg_add_fmt(ac->msg, "sAMAccountName", "krbtgt_%u",
325 if (ret != LDB_SUCCESS) {
326 return ldb_operr(ldb);
329 newpass = generate_random_password(ac->msg, 128, 255);
330 if (newpass == NULL) {
331 return ldb_operr(ldb);
334 if (!convert_string_talloc(ac,
336 newpass, strlen(newpass),
337 (void *)&newpass_utf16.data,
338 &newpass_utf16.length)) {
339 ldb_asprintf_errstring(ldb,
341 "failed to generate UTF16 password from random password");
342 return LDB_ERR_OPERATIONS_ERROR;
344 ret = ldb_msg_add_steal_value(ac->msg, "clearTextPassword", &newpass_utf16);
345 if (ret != LDB_SUCCESS) {
346 return ldb_operr(ldb);
349 return samldb_next_step(ac);
352 static int samldb_find_for_defaultObjectCategory(struct samldb_ctx *ac)
354 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
355 struct ldb_result *res;
356 const char *no_attrs[] = { NULL };
361 ret = dsdb_module_search(ac->module, ac, &res,
362 ac->dn, LDB_SCOPE_BASE, no_attrs,
363 DSDB_SEARCH_SHOW_DN_IN_STORAGE_FORMAT
364 | DSDB_FLAG_NEXT_MODULE,
366 "(objectClass=classSchema)");
367 if (ret == LDB_ERR_NO_SUCH_OBJECT) {
368 /* Don't be pricky when the DN doesn't exist if we have the */
369 /* RELAX control specified */
370 if (ldb_request_get_control(ac->req,
371 LDB_CONTROL_RELAX_OID) == NULL) {
372 ldb_set_errstring(ldb,
373 "samldb_find_defaultObjectCategory: "
374 "Invalid DN for 'defaultObjectCategory'!");
375 return LDB_ERR_CONSTRAINT_VIOLATION;
378 if ((ret != LDB_ERR_NO_SUCH_OBJECT) && (ret != LDB_SUCCESS)) {
384 return samldb_next_step(ac);
388 * msDS-IntId attributeSchema attribute handling
389 * during LDB_ADD request processing
391 static int samldb_add_handle_msDS_IntId(struct samldb_ctx *ac)
396 int32_t system_flags;
397 struct ldb_context *ldb;
398 struct ldb_result *ldb_res;
399 struct ldb_dn *schema_dn;
401 ldb = ldb_module_get_ctx(ac->module);
402 schema_dn = ldb_get_schema_basedn(ldb);
404 /* replicated update should always go through */
405 if (ldb_request_get_control(ac->req,
406 DSDB_CONTROL_REPLICATED_UPDATE_OID)) {
410 /* msDS-IntId is handled by system and should never be
411 * passed by clients */
412 if (ldb_msg_find_element(ac->msg, "msDS-IntId")) {
413 return LDB_ERR_UNWILLING_TO_PERFORM;
416 /* do not generate msDS-IntId if Relax control is passed */
417 if (ldb_request_get_control(ac->req, LDB_CONTROL_RELAX_OID)) {
421 /* check Functional Level */
422 if (dsdb_functional_level(ldb) < DS_DOMAIN_FUNCTION_2003) {
426 /* check systemFlags for SCHEMA_BASE_OBJECT flag */
427 system_flags = ldb_msg_find_attr_as_int(ac->msg, "systemFlags", 0);
428 if (system_flags & SYSTEM_FLAG_SCHEMA_BASE_OBJECT) {
432 /* Generate new value for msDs-IntId
433 * Value should be in 0x80000000..0xBFFFFFFF range */
434 msds_intid = generate_random() % 0X3FFFFFFF;
435 msds_intid += 0x80000000;
437 /* probe id values until unique one is found */
440 if (msds_intid > 0xBFFFFFFF) {
441 msds_intid = 0x80000001;
444 ret = dsdb_module_search(ac->module, ac,
446 schema_dn, LDB_SCOPE_ONELEVEL, NULL,
447 DSDB_FLAG_NEXT_MODULE,
449 "(msDS-IntId=%d)", msds_intid);
450 if (ret != LDB_SUCCESS) {
451 ldb_debug_set(ldb, LDB_DEBUG_ERROR,
452 __location__": Searching for msDS-IntId=%d failed - %s\n",
455 return ldb_operr(ldb);
457 id_exists = (ldb_res->count > 0);
459 talloc_free(ldb_res);
462 return samdb_msg_add_int(ldb, ac->msg, ac->msg, "msDS-IntId",
468 * samldb_add_entry (async)
471 static int samldb_add_entry_callback(struct ldb_request *req,
472 struct ldb_reply *ares)
474 struct ldb_context *ldb;
475 struct samldb_ctx *ac;
478 ac = talloc_get_type(req->context, struct samldb_ctx);
479 ldb = ldb_module_get_ctx(ac->module);
482 return ldb_module_done(ac->req, NULL, NULL,
483 LDB_ERR_OPERATIONS_ERROR);
486 if (ares->type == LDB_REPLY_REFERRAL) {
487 return ldb_module_send_referral(ac->req, ares->referral);
490 if (ares->error != LDB_SUCCESS) {
491 return ldb_module_done(ac->req, ares->controls,
492 ares->response, ares->error);
494 if (ares->type != LDB_REPLY_DONE) {
495 ldb_set_errstring(ldb,
496 "Invalid reply type!\n");
497 return ldb_module_done(ac->req, NULL, NULL,
498 LDB_ERR_OPERATIONS_ERROR);
501 /* The caller may wish to get controls back from the add */
502 ac->ares = talloc_steal(ac, ares);
504 ret = samldb_next_step(ac);
505 if (ret != LDB_SUCCESS) {
506 return ldb_module_done(ac->req, NULL, NULL, ret);
511 static int samldb_add_entry(struct samldb_ctx *ac)
513 struct ldb_context *ldb;
514 struct ldb_request *req;
517 ldb = ldb_module_get_ctx(ac->module);
519 ret = ldb_build_add_req(&req, ldb, ac,
522 ac, samldb_add_entry_callback,
524 LDB_REQ_SET_LOCATION(req);
525 if (ret != LDB_SUCCESS) {
529 return ldb_next_request(ac->module, req);
533 * return true if msg carries an attributeSchema that is intended to be RODC
534 * filtered but is also a system-critical attribute.
536 static bool check_rodc_critical_attribute(struct ldb_message *msg)
538 uint32_t schemaFlagsEx, searchFlags, rodc_filtered_flags;
540 schemaFlagsEx = ldb_msg_find_attr_as_uint(msg, "schemaFlagsEx", 0);
541 searchFlags = ldb_msg_find_attr_as_uint(msg, "searchFlags", 0);
542 rodc_filtered_flags = (SEARCH_FLAG_RODC_ATTRIBUTE
543 | SEARCH_FLAG_CONFIDENTIAL);
545 if ((schemaFlagsEx & SCHEMA_FLAG_ATTR_IS_CRITICAL) &&
546 ((searchFlags & rodc_filtered_flags) == rodc_filtered_flags)) {
554 static int samldb_fill_object(struct samldb_ctx *ac)
556 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
559 /* Add information for the different account types */
560 if (strcmp(ac->type, "user") == 0) {
561 struct ldb_control *rodc_control = ldb_request_get_control(ac->req,
562 LDB_CONTROL_RODC_DCPROMO_OID);
563 if (rodc_control != NULL) {
564 /* see [MS-ADTS] 3.1.1.3.4.1.23 LDAP_SERVER_RODC_DCPROMO_OID */
565 rodc_control->critical = false;
566 ret = samldb_add_step(ac, samldb_rodc_add);
567 if (ret != LDB_SUCCESS) return ret;
570 /* check if we have a valid sAMAccountName */
571 ret = samldb_add_step(ac, samldb_check_sAMAccountName);
572 if (ret != LDB_SUCCESS) return ret;
574 ret = samldb_add_step(ac, samldb_add_entry);
575 if (ret != LDB_SUCCESS) return ret;
577 } else if (strcmp(ac->type, "group") == 0) {
578 /* check if we have a valid sAMAccountName */
579 ret = samldb_add_step(ac, samldb_check_sAMAccountName);
580 if (ret != LDB_SUCCESS) return ret;
582 ret = samldb_add_step(ac, samldb_add_entry);
583 if (ret != LDB_SUCCESS) return ret;
585 } else if (strcmp(ac->type, "classSchema") == 0) {
586 const struct ldb_val *rdn_value, *def_obj_cat_val;
588 ret = samdb_find_or_add_attribute(ldb, ac->msg,
590 if (ret != LDB_SUCCESS) return ret;
592 /* do not allow to mark an attributeSchema as RODC filtered if it
593 * is system-critical */
594 if (check_rodc_critical_attribute(ac->msg)) {
595 ldb_asprintf_errstring(ldb, "Refusing schema add of %s - cannot combine critical class with RODC filtering",
596 ldb_dn_get_linearized(ac->msg->dn));
597 return LDB_ERR_UNWILLING_TO_PERFORM;
600 rdn_value = ldb_dn_get_rdn_val(ac->msg->dn);
601 if (rdn_value == NULL) {
602 return ldb_operr(ldb);
604 if (!ldb_msg_find_element(ac->msg, "lDAPDisplayName")) {
605 /* the RDN has prefix "CN" */
606 ret = ldb_msg_add_string(ac->msg, "lDAPDisplayName",
607 samdb_cn_to_lDAPDisplayName(ac->msg,
608 (const char *) rdn_value->data));
609 if (ret != LDB_SUCCESS) {
615 if (!ldb_msg_find_element(ac->msg, "schemaIDGUID")) {
618 guid = GUID_random();
619 ret = dsdb_msg_add_guid(ac->msg, &guid, "schemaIDGUID");
620 if (ret != LDB_SUCCESS) {
626 def_obj_cat_val = ldb_msg_find_ldb_val(ac->msg,
627 "defaultObjectCategory");
628 if (def_obj_cat_val != NULL) {
629 /* "defaultObjectCategory" has been set by the caller.
630 * Do some checks for consistency.
631 * NOTE: The real constraint check (that
632 * 'defaultObjectCategory' is the DN of the new
633 * objectclass or any parent of it) is still incomplete.
634 * For now we say that 'defaultObjectCategory' is valid
635 * if it exists and it is of objectclass "classSchema".
637 ac->dn = ldb_dn_from_ldb_val(ac, ldb, def_obj_cat_val);
638 if (ac->dn == NULL) {
639 ldb_set_errstring(ldb,
640 "Invalid DN for 'defaultObjectCategory'!");
641 return LDB_ERR_CONSTRAINT_VIOLATION;
644 /* "defaultObjectCategory" has not been set by the
645 * caller. Use the entry DN for it. */
646 ac->dn = ac->msg->dn;
648 ret = ldb_msg_add_string(ac->msg, "defaultObjectCategory",
649 ldb_dn_alloc_linearized(ac->msg, ac->dn));
650 if (ret != LDB_SUCCESS) {
656 ret = samldb_add_step(ac, samldb_add_entry);
657 if (ret != LDB_SUCCESS) return ret;
659 /* Now perform the checks for the 'defaultObjectCategory'. The
660 * lookup DN was already saved in "ac->dn" */
661 ret = samldb_add_step(ac, samldb_find_for_defaultObjectCategory);
662 if (ret != LDB_SUCCESS) return ret;
664 } else if (strcmp(ac->type, "attributeSchema") == 0) {
665 const struct ldb_val *rdn_value;
666 rdn_value = ldb_dn_get_rdn_val(ac->msg->dn);
667 if (rdn_value == NULL) {
668 return ldb_operr(ldb);
670 if (!ldb_msg_find_element(ac->msg, "lDAPDisplayName")) {
671 /* the RDN has prefix "CN" */
672 ret = ldb_msg_add_string(ac->msg, "lDAPDisplayName",
673 samdb_cn_to_lDAPDisplayName(ac->msg,
674 (const char *) rdn_value->data));
675 if (ret != LDB_SUCCESS) {
681 /* do not allow to mark an attributeSchema as RODC filtered if it
682 * is system-critical */
683 if (check_rodc_critical_attribute(ac->msg)) {
684 ldb_asprintf_errstring(ldb,
685 "samldb: refusing schema add of %s - cannot combine critical attribute with RODC filtering",
686 ldb_dn_get_linearized(ac->msg->dn));
687 return LDB_ERR_UNWILLING_TO_PERFORM;
690 ret = samdb_find_or_add_attribute(ldb, ac->msg,
691 "isSingleValued", "FALSE");
692 if (ret != LDB_SUCCESS) return ret;
694 if (!ldb_msg_find_element(ac->msg, "schemaIDGUID")) {
697 guid = GUID_random();
698 ret = dsdb_msg_add_guid(ac->msg, &guid, "schemaIDGUID");
699 if (ret != LDB_SUCCESS) {
705 /* handle msDS-IntID attribute */
706 ret = samldb_add_handle_msDS_IntId(ac);
707 if (ret != LDB_SUCCESS) return ret;
709 ret = samldb_add_step(ac, samldb_add_entry);
710 if (ret != LDB_SUCCESS) return ret;
713 ldb_asprintf_errstring(ldb,
714 "Invalid entry type!");
715 return LDB_ERR_OPERATIONS_ERROR;
718 return samldb_first_step(ac);
721 static int samldb_fill_foreignSecurityPrincipal_object(struct samldb_ctx *ac)
723 struct ldb_context *ldb;
724 const struct ldb_val *rdn_value;
728 ldb = ldb_module_get_ctx(ac->module);
730 sid = samdb_result_dom_sid(ac->msg, ac->msg, "objectSid");
732 rdn_value = ldb_dn_get_rdn_val(ac->msg->dn);
733 if (rdn_value == NULL) {
734 return ldb_operr(ldb);
736 sid = dom_sid_parse_talloc(ac->msg,
737 (const char *)rdn_value->data);
739 ldb_set_errstring(ldb,
740 "samldb: No valid SID found in ForeignSecurityPrincipal CN!");
741 return LDB_ERR_CONSTRAINT_VIOLATION;
743 if (! samldb_msg_add_sid(ac->msg, "objectSid", sid)) {
744 return ldb_operr(ldb);
748 /* finally proceed with adding the entry */
749 ret = samldb_add_step(ac, samldb_add_entry);
750 if (ret != LDB_SUCCESS) return ret;
752 return samldb_first_step(ac);
755 static int samldb_schema_info_update(struct samldb_ctx *ac)
758 struct ldb_context *ldb;
759 struct dsdb_schema *schema;
761 /* replicated update should always go through */
762 if (ldb_request_get_control(ac->req,
763 DSDB_CONTROL_REPLICATED_UPDATE_OID)) {
767 /* do not update schemaInfo during provisioning */
768 if (ldb_request_get_control(ac->req, LDB_CONTROL_RELAX_OID)) {
772 ldb = ldb_module_get_ctx(ac->module);
773 schema = dsdb_get_schema(ldb, NULL);
775 ldb_debug_set(ldb, LDB_DEBUG_FATAL,
776 "samldb_schema_info_update: no dsdb_schema loaded");
777 DEBUG(0,(__location__ ": %s\n", ldb_errstring(ldb)));
778 return ldb_operr(ldb);
781 ret = dsdb_module_schema_info_update(ac->module, schema,
782 DSDB_FLAG_NEXT_MODULE, ac->req);
783 if (ret != LDB_SUCCESS) {
784 ldb_asprintf_errstring(ldb,
785 "samldb_schema_info_update: dsdb_module_schema_info_update failed with %s",
793 static int samldb_prim_group_tester(struct samldb_ctx *ac, uint32_t rid);
796 * "Objectclass" trigger (MS-SAMR 3.1.1.8.1)
798 * Has to be invoked on "add" and "modify" operations on "user", "computer" and
800 * ac->msg contains the "add"/"modify" message
801 * ac->type contains the object type (main objectclass)
803 static int samldb_objectclass_trigger(struct samldb_ctx *ac)
805 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
806 void *skip_allocate_sids = ldb_get_opaque(ldb,
807 "skip_allocate_sids");
808 struct ldb_message_element *el, *el2;
812 /* make sure that "sAMAccountType" is not specified */
813 el = ldb_msg_find_element(ac->msg, "sAMAccountType");
815 ldb_set_errstring(ldb,
816 "samldb: sAMAccountType must not be specified!");
817 return LDB_ERR_UNWILLING_TO_PERFORM;
820 /* Step 1: objectSid assignment */
822 /* Don't allow the objectSid to be changed. But beside the RELAX
823 * control we have also to guarantee that it can always be set with
824 * SYSTEM permissions. This is needed for the "samba3sam" backend. */
825 sid = samdb_result_dom_sid(ac, ac->msg, "objectSid");
826 if ((sid != NULL) && (!dsdb_module_am_system(ac->module)) &&
827 (ldb_request_get_control(ac->req, LDB_CONTROL_RELAX_OID) == NULL)) {
828 ldb_set_errstring(ldb,
829 "samldb: objectSid must not be specified!");
830 return LDB_ERR_UNWILLING_TO_PERFORM;
833 /* but generate a new SID when we do have an add operations */
834 if ((sid == NULL) && (ac->req->operation == LDB_ADD) && !skip_allocate_sids) {
835 ret = samldb_add_step(ac, samldb_allocate_sid);
836 if (ret != LDB_SUCCESS) return ret;
839 if (strcmp(ac->type, "user") == 0) {
840 bool uac_generated = false;
842 /* Step 1.2: Default values */
843 ret = samdb_find_or_add_attribute(ldb, ac->msg,
844 "accountExpires", "9223372036854775807");
845 if (ret != LDB_SUCCESS) return ret;
846 ret = samdb_find_or_add_attribute(ldb, ac->msg,
847 "badPasswordTime", "0");
848 if (ret != LDB_SUCCESS) return ret;
849 ret = samdb_find_or_add_attribute(ldb, ac->msg,
851 if (ret != LDB_SUCCESS) return ret;
852 ret = samdb_find_or_add_attribute(ldb, ac->msg,
854 if (ret != LDB_SUCCESS) return ret;
855 ret = samdb_find_or_add_attribute(ldb, ac->msg,
857 if (ret != LDB_SUCCESS) return ret;
858 ret = samdb_find_or_add_attribute(ldb, ac->msg,
860 if (ret != LDB_SUCCESS) return ret;
861 ret = samdb_find_or_add_attribute(ldb, ac->msg,
863 if (ret != LDB_SUCCESS) return ret;
864 ret = samdb_find_or_add_attribute(ldb, ac->msg,
866 if (ret != LDB_SUCCESS) return ret;
867 ret = samdb_find_or_add_attribute(ldb, ac->msg,
869 if (ret != LDB_SUCCESS) return ret;
871 /* On add operations we might need to generate a
872 * "userAccountControl" (if it isn't specified). */
873 el = ldb_msg_find_element(ac->msg, "userAccountControl");
874 if ((el == NULL) && (ac->req->operation == LDB_ADD)) {
875 ret = samdb_msg_set_uint(ldb, ac->msg, ac->msg,
876 "userAccountControl",
878 if (ret != LDB_SUCCESS) {
881 uac_generated = true;
884 el = ldb_msg_find_element(ac->msg, "userAccountControl");
886 uint32_t user_account_control, account_type;
888 /* Step 1.3: "userAccountControl" -> "sAMAccountType" mapping */
889 user_account_control = ldb_msg_find_attr_as_uint(ac->msg,
890 "userAccountControl",
893 /* Temporary duplicate accounts aren't allowed */
894 if ((user_account_control & UF_TEMP_DUPLICATE_ACCOUNT) != 0) {
895 return LDB_ERR_OTHER;
898 /* Workstation and (read-only) DC objects do need objectclass "computer" */
899 if ((samdb_find_attribute(ldb, ac->msg,
900 "objectclass", "computer") == NULL) &&
901 (user_account_control &
902 (UF_SERVER_TRUST_ACCOUNT | UF_WORKSTATION_TRUST_ACCOUNT))) {
903 ldb_set_errstring(ldb,
904 "samldb: Requested account type does need objectclass 'computer'!");
905 return LDB_ERR_OBJECT_CLASS_VIOLATION;
908 account_type = ds_uf2atype(user_account_control);
909 if (account_type == 0) {
910 ldb_set_errstring(ldb, "samldb: Unrecognized account type!");
911 return LDB_ERR_UNWILLING_TO_PERFORM;
913 ret = samdb_msg_add_uint(ldb, ac->msg, ac->msg,
916 if (ret != LDB_SUCCESS) {
919 el2 = ldb_msg_find_element(ac->msg, "sAMAccountType");
920 el2->flags = LDB_FLAG_MOD_REPLACE;
922 /* "isCriticalSystemObject" might be set */
923 if (user_account_control &
924 (UF_SERVER_TRUST_ACCOUNT | UF_PARTIAL_SECRETS_ACCOUNT)) {
925 ret = ldb_msg_add_string(ac->msg, "isCriticalSystemObject",
927 if (ret != LDB_SUCCESS) {
930 el2 = ldb_msg_find_element(ac->msg,
931 "isCriticalSystemObject");
932 el2->flags = LDB_FLAG_MOD_REPLACE;
933 } else if (user_account_control & UF_WORKSTATION_TRUST_ACCOUNT) {
934 ret = ldb_msg_add_string(ac->msg, "isCriticalSystemObject",
936 if (ret != LDB_SUCCESS) {
939 el2 = ldb_msg_find_element(ac->msg,
940 "isCriticalSystemObject");
941 el2->flags = LDB_FLAG_MOD_REPLACE;
944 /* Step 1.4: "userAccountControl" -> "primaryGroupID" mapping */
945 if (!ldb_msg_find_element(ac->msg, "primaryGroupID")) {
946 uint32_t rid = ds_uf2prim_group_rid(user_account_control);
949 * Older AD deployments don't know about the
952 if (rid == DOMAIN_RID_READONLY_DCS) {
953 ret = samldb_prim_group_tester(ac, rid);
954 if (ret != LDB_SUCCESS) {
959 ret = samdb_msg_add_uint(ldb, ac->msg, ac->msg,
960 "primaryGroupID", rid);
961 if (ret != LDB_SUCCESS) {
964 el2 = ldb_msg_find_element(ac->msg,
966 el2->flags = LDB_FLAG_MOD_REPLACE;
969 /* Step 1.5: Add additional flags when needed */
970 /* Obviously this is done when the "userAccountControl"
971 * has been generated here (tested against Windows
974 user_account_control |= UF_ACCOUNTDISABLE;
975 user_account_control |= UF_PASSWD_NOTREQD;
977 ret = samdb_msg_set_uint(ldb, ac->msg, ac->msg,
978 "userAccountControl",
979 user_account_control);
980 if (ret != LDB_SUCCESS) {
986 } else if (strcmp(ac->type, "group") == 0) {
989 /* Step 2.2: Default values */
990 tempstr = talloc_asprintf(ac->msg, "%d",
991 GTYPE_SECURITY_GLOBAL_GROUP);
992 if (tempstr == NULL) return ldb_operr(ldb);
993 ret = samdb_find_or_add_attribute(ldb, ac->msg,
994 "groupType", tempstr);
995 if (ret != LDB_SUCCESS) return ret;
997 /* Step 2.3: "groupType" -> "sAMAccountType" */
998 el = ldb_msg_find_element(ac->msg, "groupType");
1000 uint32_t group_type, account_type;
1002 group_type = ldb_msg_find_attr_as_uint(ac->msg,
1005 /* The creation of builtin groups requires the
1007 if (group_type == GTYPE_SECURITY_BUILTIN_LOCAL_GROUP) {
1008 if (ldb_request_get_control(ac->req,
1009 LDB_CONTROL_RELAX_OID) == NULL) {
1010 return LDB_ERR_UNWILLING_TO_PERFORM;
1014 account_type = ds_gtype2atype(group_type);
1015 if (account_type == 0) {
1016 ldb_set_errstring(ldb, "samldb: Unrecognized account type!");
1017 return LDB_ERR_UNWILLING_TO_PERFORM;
1019 ret = samdb_msg_add_uint(ldb, ac->msg, ac->msg,
1022 if (ret != LDB_SUCCESS) {
1025 el2 = ldb_msg_find_element(ac->msg, "sAMAccountType");
1026 el2->flags = LDB_FLAG_MOD_REPLACE;
1034 * "Primary group ID" trigger (MS-SAMR 3.1.1.8.2)
1036 * Has to be invoked on "add" and "modify" operations on "user" and "computer"
1038 * ac->msg contains the "add"/"modify" message
1041 static int samldb_prim_group_tester(struct samldb_ctx *ac, uint32_t rid)
1043 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
1044 struct dom_sid *sid;
1045 struct ldb_result *res;
1047 const char *noattrs[] = { NULL };
1049 sid = dom_sid_add_rid(ac, samdb_domain_sid(ldb), rid);
1051 return ldb_operr(ldb);
1054 ret = dsdb_module_search(ac->module, ac, &res, NULL, LDB_SCOPE_SUBTREE,
1055 noattrs, DSDB_FLAG_NEXT_MODULE,
1058 ldap_encode_ndr_dom_sid(ac, sid));
1059 if (ret != LDB_SUCCESS) {
1062 if (res->count != 1) {
1064 ldb_asprintf_errstring(ldb,
1065 "Failed to find primary group with RID %u!",
1067 return LDB_ERR_UNWILLING_TO_PERFORM;
1074 static int samldb_prim_group_set(struct samldb_ctx *ac)
1076 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
1079 rid = ldb_msg_find_attr_as_uint(ac->msg, "primaryGroupID", (uint32_t) -1);
1080 if (rid == (uint32_t) -1) {
1081 /* we aren't affected of any primary group set */
1084 } else if (!ldb_request_get_control(ac->req, LDB_CONTROL_RELAX_OID)) {
1085 ldb_set_errstring(ldb,
1086 "The primary group isn't settable on add operations!");
1087 return LDB_ERR_UNWILLING_TO_PERFORM;
1090 return samldb_prim_group_tester(ac, rid);
1093 static int samldb_prim_group_change(struct samldb_ctx *ac)
1095 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
1096 const char * attrs[] = { "primaryGroupID", "memberOf", NULL };
1097 struct ldb_result *res, *group_res;
1098 struct ldb_message_element *el;
1099 struct ldb_message *msg;
1100 uint32_t prev_rid, new_rid;
1101 struct dom_sid *prev_sid, *new_sid;
1102 struct ldb_dn *prev_prim_group_dn, *new_prim_group_dn;
1104 const char *noattrs[] = { NULL };
1106 el = dsdb_get_single_valued_attr(ac->msg, "primaryGroupID",
1107 ac->req->operation);
1109 /* we are not affected */
1113 /* Fetch information from the existing object */
1115 ret = dsdb_module_search_dn(ac->module, ac, &res, ac->msg->dn, attrs,
1116 DSDB_FLAG_NEXT_MODULE, ac->req);
1117 if (ret != LDB_SUCCESS) {
1121 /* Finds out the DN of the old primary group */
1123 prev_rid = ldb_msg_find_attr_as_uint(res->msgs[0], "primaryGroupID",
1125 if (prev_rid == (uint32_t) -1) {
1126 /* User objects do always have a mandatory "primaryGroupID"
1127 * attribute. If this doesn't exist then the object is of the
1128 * wrong type. This is the exact Windows error code */
1129 return LDB_ERR_OBJECT_CLASS_VIOLATION;
1132 prev_sid = dom_sid_add_rid(ac, samdb_domain_sid(ldb), prev_rid);
1133 if (prev_sid == NULL) {
1134 return ldb_operr(ldb);
1137 /* Finds out the DN of the new primary group
1138 * Notice: in order to parse the primary group ID correctly we create
1139 * a temporary message here. */
1141 msg = ldb_msg_new(ac->msg);
1143 return ldb_module_oom(ac->module);
1145 ret = ldb_msg_add(msg, el, 0);
1146 if (ret != LDB_SUCCESS) {
1149 new_rid = ldb_msg_find_attr_as_uint(msg, "primaryGroupID", (uint32_t) -1);
1151 if (new_rid == (uint32_t) -1) {
1152 /* we aren't affected of any primary group change */
1156 if (prev_rid == new_rid) {
1160 ret = dsdb_module_search(ac->module, ac, &group_res, NULL, LDB_SCOPE_SUBTREE,
1161 noattrs, DSDB_FLAG_NEXT_MODULE,
1164 ldap_encode_ndr_dom_sid(ac, prev_sid));
1165 if (ret != LDB_SUCCESS) {
1168 if (group_res->count != 1) {
1169 return ldb_operr(ldb);
1171 prev_prim_group_dn = group_res->msgs[0]->dn;
1173 new_sid = dom_sid_add_rid(ac, samdb_domain_sid(ldb), new_rid);
1174 if (new_sid == NULL) {
1175 return ldb_operr(ldb);
1178 ret = dsdb_module_search(ac->module, ac, &group_res, NULL, LDB_SCOPE_SUBTREE,
1179 noattrs, DSDB_FLAG_NEXT_MODULE,
1182 ldap_encode_ndr_dom_sid(ac, new_sid));
1183 if (ret != LDB_SUCCESS) {
1186 if (group_res->count != 1) {
1187 /* Here we know if the specified new primary group candidate is
1189 return LDB_ERR_UNWILLING_TO_PERFORM;
1191 new_prim_group_dn = group_res->msgs[0]->dn;
1193 /* We need to be already a normal member of the new primary
1194 * group in order to be successful. */
1195 el = samdb_find_attribute(ldb, res->msgs[0], "memberOf",
1196 ldb_dn_get_linearized(new_prim_group_dn));
1198 return LDB_ERR_UNWILLING_TO_PERFORM;
1201 /* Remove the "member" attribute on the new primary group */
1202 msg = ldb_msg_new(ac->msg);
1204 return ldb_module_oom(ac->module);
1206 msg->dn = new_prim_group_dn;
1208 ret = samdb_msg_add_delval(ldb, msg, msg, "member",
1209 ldb_dn_get_linearized(ac->msg->dn));
1210 if (ret != LDB_SUCCESS) {
1214 ret = dsdb_module_modify(ac->module, msg, DSDB_FLAG_NEXT_MODULE, ac->req);
1215 if (ret != LDB_SUCCESS) {
1220 /* Add a "member" attribute for the previous primary group */
1221 msg = ldb_msg_new(ac->msg);
1223 return ldb_module_oom(ac->module);
1225 msg->dn = prev_prim_group_dn;
1227 ret = samdb_msg_add_addval(ldb, msg, msg, "member",
1228 ldb_dn_get_linearized(ac->msg->dn));
1229 if (ret != LDB_SUCCESS) {
1233 ret = dsdb_module_modify(ac->module, msg, DSDB_FLAG_NEXT_MODULE, ac->req);
1234 if (ret != LDB_SUCCESS) {
1242 static int samldb_prim_group_trigger(struct samldb_ctx *ac)
1246 if (ac->req->operation == LDB_ADD) {
1247 ret = samldb_prim_group_set(ac);
1249 ret = samldb_prim_group_change(ac);
1257 * This function is called on LDB modify operations. It performs some additions/
1258 * replaces on the current LDB message when "userAccountControl" changes.
1260 static int samldb_user_account_control_change(struct samldb_ctx *ac)
1262 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
1263 uint32_t user_account_control, old_user_account_control, account_type;
1264 struct ldb_message_element *el;
1265 struct ldb_message *tmp_msg;
1267 struct ldb_result *res;
1268 const char *attrs[] = { "userAccountControl", "objectClass", NULL };
1270 bool is_computer = false;
1272 el = dsdb_get_single_valued_attr(ac->msg, "userAccountControl",
1273 ac->req->operation);
1275 /* we are not affected */
1279 /* Create a temporary message for fetching the "userAccountControl" */
1280 tmp_msg = ldb_msg_new(ac->msg);
1281 if (tmp_msg == NULL) {
1282 return ldb_module_oom(ac->module);
1284 ret = ldb_msg_add(tmp_msg, el, 0);
1285 if (ret != LDB_SUCCESS) {
1288 user_account_control = ldb_msg_find_attr_as_uint(tmp_msg,
1289 "userAccountControl",
1291 talloc_free(tmp_msg);
1293 /* Temporary duplicate accounts aren't allowed */
1294 if ((user_account_control & UF_TEMP_DUPLICATE_ACCOUNT) != 0) {
1295 return LDB_ERR_OTHER;
1298 /* Fetch the old "userAccountControl" and "objectClass" */
1299 ret = dsdb_module_search_dn(ac->module, ac, &res, ac->msg->dn, attrs,
1300 DSDB_FLAG_NEXT_MODULE, ac->req);
1301 if (ret != LDB_SUCCESS) {
1304 old_user_account_control = ldb_msg_find_attr_as_uint(res->msgs[0], "userAccountControl", 0);
1305 if (old_user_account_control == 0) {
1306 return ldb_operr(ldb);
1308 el = ldb_msg_find_element(res->msgs[0], "objectClass");
1310 return ldb_operr(ldb);
1313 /* When we do not have objectclass "computer" we cannot switch to a (read-only) DC */
1314 for (i = 0; i < el->num_values; i++) {
1315 if (ldb_attr_cmp((char *)el->values[i].data, "computer") == 0) {
1321 (user_account_control & (UF_SERVER_TRUST_ACCOUNT | UF_PARTIAL_SECRETS_ACCOUNT))) {
1322 ldb_set_errstring(ldb,
1323 "samldb: Requested account type does need objectclass 'computer'!");
1324 return LDB_ERR_UNWILLING_TO_PERFORM;
1328 * The functions "ds_uf2atype" and "ds_uf2prim_group_rid" are used as
1329 * detectors for account type changes.
1330 * So if the account type does change then we need to adjust the
1331 * "sAMAccountType", the "isCriticalSystemObject" and the
1332 * "primaryGroupID" attribute.
1334 if ((ds_uf2atype(user_account_control)
1335 == ds_uf2atype(old_user_account_control)) &&
1336 (ds_uf2prim_group_rid(user_account_control)
1337 == ds_uf2prim_group_rid(old_user_account_control))) {
1341 account_type = ds_uf2atype(user_account_control);
1342 if (account_type == 0) {
1343 ldb_set_errstring(ldb, "samldb: Unrecognized account type!");
1344 return LDB_ERR_UNWILLING_TO_PERFORM;
1346 ret = samdb_msg_add_uint(ldb, ac->msg, ac->msg, "sAMAccountType",
1348 if (ret != LDB_SUCCESS) {
1351 el = ldb_msg_find_element(ac->msg, "sAMAccountType");
1352 el->flags = LDB_FLAG_MOD_REPLACE;
1354 /* "isCriticalSystemObject" might be set/changed */
1355 if (user_account_control
1356 & (UF_SERVER_TRUST_ACCOUNT | UF_PARTIAL_SECRETS_ACCOUNT)) {
1357 ret = ldb_msg_add_string(ac->msg, "isCriticalSystemObject",
1359 if (ret != LDB_SUCCESS) {
1362 el = ldb_msg_find_element(ac->msg,
1363 "isCriticalSystemObject");
1364 el->flags = LDB_FLAG_MOD_REPLACE;
1365 } else if (user_account_control & UF_WORKSTATION_TRUST_ACCOUNT) {
1366 ret = ldb_msg_add_string(ac->msg, "isCriticalSystemObject",
1368 if (ret != LDB_SUCCESS) {
1371 el = ldb_msg_find_element(ac->msg,
1372 "isCriticalSystemObject");
1373 el->flags = LDB_FLAG_MOD_REPLACE;
1376 if (!ldb_msg_find_element(ac->msg, "primaryGroupID")) {
1377 uint32_t rid = ds_uf2prim_group_rid(user_account_control);
1379 /* Older AD deployments don't know about the RODC group */
1380 if (rid == DOMAIN_RID_READONLY_DCS) {
1381 ret = samldb_prim_group_tester(ac, rid);
1382 if (ret != LDB_SUCCESS) {
1387 ret = samdb_msg_add_uint(ldb, ac->msg, ac->msg,
1388 "primaryGroupID", rid);
1389 if (ret != LDB_SUCCESS) {
1392 el = ldb_msg_find_element(ac->msg,
1394 el->flags = LDB_FLAG_MOD_REPLACE;
1400 static int samldb_group_type_change(struct samldb_ctx *ac)
1402 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
1403 uint32_t group_type, old_group_type, account_type;
1404 struct ldb_message_element *el;
1405 struct ldb_message *tmp_msg;
1407 struct ldb_result *res;
1408 const char *attrs[] = { "groupType", NULL };
1410 el = dsdb_get_single_valued_attr(ac->msg, "groupType",
1411 ac->req->operation);
1413 /* we are not affected */
1417 /* Create a temporary message for fetching the "groupType" */
1418 tmp_msg = ldb_msg_new(ac->msg);
1419 if (tmp_msg == NULL) {
1420 return ldb_module_oom(ac->module);
1422 ret = ldb_msg_add(tmp_msg, el, 0);
1423 if (ret != LDB_SUCCESS) {
1426 group_type = ldb_msg_find_attr_as_uint(tmp_msg, "groupType", 0);
1427 talloc_free(tmp_msg);
1429 ret = dsdb_module_search_dn(ac->module, ac, &res, ac->msg->dn, attrs,
1430 DSDB_FLAG_NEXT_MODULE, ac->req);
1431 if (ret != LDB_SUCCESS) {
1434 old_group_type = ldb_msg_find_attr_as_uint(res->msgs[0], "groupType", 0);
1435 if (old_group_type == 0) {
1436 return ldb_operr(ldb);
1439 /* Group type switching isn't so easy as it seems: We can only
1440 * change in this directions: global <-> universal <-> local
1441 * On each step also the group type itself
1442 * (security/distribution) is variable. */
1444 if (ldb_request_get_control(ac->req, LDB_CONTROL_PROVISION_OID) == NULL) {
1445 switch (group_type) {
1446 case GTYPE_SECURITY_GLOBAL_GROUP:
1447 case GTYPE_DISTRIBUTION_GLOBAL_GROUP:
1448 /* change to "universal" allowed */
1449 if ((old_group_type == GTYPE_SECURITY_DOMAIN_LOCAL_GROUP) ||
1450 (old_group_type == GTYPE_DISTRIBUTION_DOMAIN_LOCAL_GROUP)) {
1451 ldb_set_errstring(ldb,
1452 "samldb: Change from security/distribution local group forbidden!");
1453 return LDB_ERR_UNWILLING_TO_PERFORM;
1457 case GTYPE_SECURITY_UNIVERSAL_GROUP:
1458 case GTYPE_DISTRIBUTION_UNIVERSAL_GROUP:
1459 /* each change allowed */
1461 case GTYPE_SECURITY_DOMAIN_LOCAL_GROUP:
1462 case GTYPE_DISTRIBUTION_DOMAIN_LOCAL_GROUP:
1463 /* change to "universal" allowed */
1464 if ((old_group_type == GTYPE_SECURITY_GLOBAL_GROUP) ||
1465 (old_group_type == GTYPE_DISTRIBUTION_GLOBAL_GROUP)) {
1466 ldb_set_errstring(ldb,
1467 "samldb: Change from security/distribution global group forbidden!");
1468 return LDB_ERR_UNWILLING_TO_PERFORM;
1472 case GTYPE_SECURITY_BUILTIN_LOCAL_GROUP:
1474 /* we don't allow this "groupType" values */
1475 return LDB_ERR_UNWILLING_TO_PERFORM;
1480 account_type = ds_gtype2atype(group_type);
1481 if (account_type == 0) {
1482 ldb_set_errstring(ldb, "samldb: Unrecognized account type!");
1483 return LDB_ERR_UNWILLING_TO_PERFORM;
1485 ret = samdb_msg_add_uint(ldb, ac->msg, ac->msg, "sAMAccountType",
1487 if (ret != LDB_SUCCESS) {
1490 el = ldb_msg_find_element(ac->msg, "sAMAccountType");
1491 el->flags = LDB_FLAG_MOD_REPLACE;
1496 static int samldb_sam_accountname_check(struct samldb_ctx *ac)
1498 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
1499 const char *no_attrs[] = { NULL };
1500 struct ldb_result *res;
1501 const char *sam_accountname, *enc_str;
1502 struct ldb_message_element *el;
1503 struct ldb_message *tmp_msg;
1506 el = dsdb_get_single_valued_attr(ac->msg, "sAMAccountName",
1507 ac->req->operation);
1509 /* we are not affected */
1513 /* Create a temporary message for fetching the "sAMAccountName" */
1514 tmp_msg = ldb_msg_new(ac->msg);
1515 if (tmp_msg == NULL) {
1516 return ldb_module_oom(ac->module);
1518 ret = ldb_msg_add(tmp_msg, el, 0);
1519 if (ret != LDB_SUCCESS) {
1522 sam_accountname = talloc_steal(ac,
1523 ldb_msg_find_attr_as_string(tmp_msg, "sAMAccountName", NULL));
1524 talloc_free(tmp_msg);
1526 if (sam_accountname == NULL) {
1527 /* The "sAMAccountName" cannot be nothing */
1528 ldb_set_errstring(ldb,
1529 "samldb: Empty account names aren't allowed!");
1530 return LDB_ERR_UNWILLING_TO_PERFORM;
1533 enc_str = ldb_binary_encode_string(ac, sam_accountname);
1534 if (enc_str == NULL) {
1535 return ldb_module_oom(ac->module);
1538 /* Make sure that a "sAMAccountName" is only used once */
1540 ret = dsdb_module_search(ac->module, ac, &res, NULL, LDB_SCOPE_SUBTREE, no_attrs,
1541 DSDB_FLAG_NEXT_MODULE, ac->req,
1542 "(sAMAccountName=%s)", enc_str);
1543 if (ret != LDB_SUCCESS) {
1546 if (res->count > 1) {
1547 return ldb_operr(ldb);
1548 } else if (res->count == 1) {
1549 if (ldb_dn_compare(res->msgs[0]->dn, ac->msg->dn) != 0) {
1550 ldb_asprintf_errstring(ldb,
1551 "samldb: Account name (sAMAccountName) '%s' already in use!",
1553 return LDB_ERR_ENTRY_ALREADY_EXISTS;
1561 static int samldb_member_check(struct samldb_ctx *ac)
1563 static const char * const attrs[] = { "objectSid", "member", NULL };
1564 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
1565 struct ldb_message_element *el;
1566 struct ldb_dn *member_dn;
1567 struct dom_sid *sid;
1568 struct ldb_result *res;
1569 struct dom_sid *group_sid;
1574 /* Fetch information from the existing object */
1576 ret = dsdb_module_search(ac->module, ac, &res, ac->msg->dn, LDB_SCOPE_BASE, attrs,
1577 DSDB_FLAG_NEXT_MODULE, ac->req, NULL);
1578 if (ret != LDB_SUCCESS) {
1581 if (res->count != 1) {
1582 return ldb_operr(ldb);
1585 group_sid = samdb_result_dom_sid(res, res->msgs[0], "objectSid");
1586 if (group_sid == NULL) {
1587 return ldb_operr(ldb);
1590 /* We've to walk over all modification entries and consider the "member"
1592 for (i = 0; i < ac->msg->num_elements; i++) {
1593 if (ldb_attr_cmp(ac->msg->elements[i].name, "member") != 0) {
1597 el = &ac->msg->elements[i];
1598 for (j = 0; j < el->num_values; j++) {
1599 struct ldb_message_element *mo;
1600 struct ldb_result *group_res;
1601 const char *group_attrs[] = { "primaryGroupID" , NULL };
1602 uint32_t prim_group_rid;
1604 member_dn = ldb_dn_from_ldb_val(ac, ldb,
1606 if (!ldb_dn_validate(member_dn)) {
1607 return ldb_operr(ldb);
1610 /* The "member" attribute can be modified with the
1611 * following restrictions (beside a valid DN):
1613 * - "add" operations can only be performed when the
1614 * member still doesn't exist - if not then return
1615 * ERR_ENTRY_ALREADY_EXISTS (not
1616 * ERR_ATTRIBUTE_OR_VALUE_EXISTS!)
1617 * - "delete" operations can only be performed when the
1618 * member does exist - if not then return
1619 * ERR_UNWILLING_TO_PERFORM (not
1620 * ERR_NO_SUCH_ATTRIBUTE!)
1621 * - primary group check
1623 mo = samdb_find_attribute(ldb, res->msgs[0], "member",
1624 ldb_dn_get_linearized(member_dn));
1631 if ((cnt > 0) && (LDB_FLAG_MOD_TYPE(el->flags)
1632 == LDB_FLAG_MOD_ADD)) {
1633 return LDB_ERR_ENTRY_ALREADY_EXISTS;
1635 if ((cnt == 0) && LDB_FLAG_MOD_TYPE(el->flags)
1636 == LDB_FLAG_MOD_DELETE) {
1637 return LDB_ERR_UNWILLING_TO_PERFORM;
1640 /* Denies to add "member"s to groups which are primary
1641 * ones for them - in this case return
1642 * ERR_ENTRY_ALREADY_EXISTS. */
1644 ret = dsdb_module_search_dn(ac->module, ac, &group_res,
1645 member_dn, group_attrs,
1646 DSDB_FLAG_NEXT_MODULE, ac->req);
1647 if (ret == LDB_ERR_NO_SUCH_OBJECT) {
1648 /* member DN doesn't exist yet */
1651 if (ret != LDB_SUCCESS) {
1654 prim_group_rid = ldb_msg_find_attr_as_uint(group_res->msgs[0], "primaryGroupID", (uint32_t)-1);
1655 if (prim_group_rid == (uint32_t) -1) {
1656 /* the member hasn't to be a user account ->
1657 * therefore no check needed in this case. */
1661 sid = dom_sid_add_rid(ac, samdb_domain_sid(ldb),
1664 return ldb_operr(ldb);
1667 if (dom_sid_equal(group_sid, sid)) {
1668 return LDB_ERR_ENTRY_ALREADY_EXISTS;
1678 /* SAM objects have special rules regarding the "description" attribute on
1679 * modify operations. */
1680 static int samldb_description_check(struct samldb_ctx *ac, bool *modified)
1682 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
1683 const char * const attrs[] = { "objectClass", "description", NULL };
1684 struct ldb_result *res;
1688 /* Fetch information from the existing object */
1689 ret = dsdb_module_search(ac->module, ac, &res, ac->msg->dn, LDB_SCOPE_BASE, attrs,
1690 DSDB_FLAG_NEXT_MODULE | DSDB_SEARCH_SHOW_DELETED, ac->req,
1691 "(|(objectclass=user)(objectclass=group)(objectclass=samDomain)(objectclass=samServer))");
1692 if (ret != LDB_SUCCESS) {
1693 /* don't treat it specially ... let normal error codes
1694 happen from other places */
1695 ldb_reset_err_string(ldb);
1698 if (res->count == 0) {
1699 /* we didn't match the filter */
1704 /* We've to walk over all modification entries and consider the
1705 * "description" ones. */
1706 for (i = 0; i < ac->msg->num_elements; i++) {
1707 if (ldb_attr_cmp(ac->msg->elements[i].name, "description") == 0) {
1708 ac->msg->elements[i].flags |= LDB_FLAG_INTERNAL_FORCE_SINGLE_VALUE_CHECK;
1718 /* This trigger adapts the "servicePrincipalName" attributes if the
1719 * "dNSHostName" and/or "sAMAccountName" attribute change(s) */
1720 static int samldb_service_principal_names_change(struct samldb_ctx *ac)
1722 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
1723 struct ldb_message_element *el = NULL, *el2 = NULL;
1724 struct ldb_message *msg;
1725 const char *attrs[] = { "servicePrincipalName", NULL };
1726 struct ldb_result *res;
1727 const char *dns_hostname = NULL, *old_dns_hostname = NULL,
1728 *sam_accountname = NULL, *old_sam_accountname = NULL;
1732 el = dsdb_get_single_valued_attr(ac->msg, "dNSHostName",
1733 ac->req->operation);
1734 el2 = dsdb_get_single_valued_attr(ac->msg, "sAMAccountName",
1735 ac->req->operation);
1736 if ((el == NULL) && (el2 == NULL)) {
1737 /* we are not affected */
1741 /* Create a temporary message for fetching the "dNSHostName" */
1743 const char *dns_attrs[] = { "dNSHostName", NULL };
1744 msg = ldb_msg_new(ac->msg);
1746 return ldb_module_oom(ac->module);
1748 ret = ldb_msg_add(msg, el, 0);
1749 if (ret != LDB_SUCCESS) {
1752 dns_hostname = talloc_steal(ac,
1753 ldb_msg_find_attr_as_string(msg, "dNSHostName", NULL));
1756 ret = dsdb_module_search_dn(ac->module, ac, &res, ac->msg->dn,
1757 dns_attrs, DSDB_FLAG_NEXT_MODULE, ac->req);
1758 if (ret == LDB_SUCCESS) {
1759 old_dns_hostname = ldb_msg_find_attr_as_string(res->msgs[0], "dNSHostName", NULL);
1763 /* Create a temporary message for fetching the "sAMAccountName" */
1765 char *tempstr, *tempstr2;
1766 const char *acct_attrs[] = { "sAMAccountName", NULL };
1768 msg = ldb_msg_new(ac->msg);
1770 return ldb_module_oom(ac->module);
1772 ret = ldb_msg_add(msg, el2, 0);
1773 if (ret != LDB_SUCCESS) {
1776 tempstr = talloc_strdup(ac,
1777 ldb_msg_find_attr_as_string(msg, "sAMAccountName", NULL));
1780 ret = dsdb_module_search_dn(ac->module, ac, &res, ac->msg->dn, acct_attrs,
1781 DSDB_FLAG_NEXT_MODULE, ac->req);
1782 if (ret == LDB_SUCCESS) {
1783 tempstr2 = talloc_strdup(ac,
1784 ldb_msg_find_attr_as_string(res->msgs[0],
1785 "sAMAccountName", NULL));
1789 /* The "sAMAccountName" needs some additional trimming: we need
1790 * to remove the trailing "$"s if they exist. */
1791 if ((tempstr != NULL) && (tempstr[0] != '\0') &&
1792 (tempstr[strlen(tempstr) - 1] == '$')) {
1793 tempstr[strlen(tempstr) - 1] = '\0';
1795 if ((tempstr2 != NULL) && (tempstr2[0] != '\0') &&
1796 (tempstr2[strlen(tempstr2) - 1] == '$')) {
1797 tempstr2[strlen(tempstr2) - 1] = '\0';
1799 sam_accountname = tempstr;
1800 old_sam_accountname = tempstr2;
1803 if (old_dns_hostname == NULL) {
1804 /* we cannot change when the old name is unknown */
1805 dns_hostname = NULL;
1807 if ((old_dns_hostname != NULL) && (dns_hostname != NULL) &&
1808 (strcasecmp(old_dns_hostname, dns_hostname) == 0)) {
1809 /* The "dNSHostName" didn't change */
1810 dns_hostname = NULL;
1813 if (old_sam_accountname == NULL) {
1814 /* we cannot change when the old name is unknown */
1815 sam_accountname = NULL;
1817 if ((old_sam_accountname != NULL) && (sam_accountname != NULL) &&
1818 (strcasecmp(old_sam_accountname, sam_accountname) == 0)) {
1819 /* The "sAMAccountName" didn't change */
1820 sam_accountname = NULL;
1823 if ((dns_hostname == NULL) && (sam_accountname == NULL)) {
1824 /* Well, there are information missing (old name(s)) or the
1825 * names didn't change. We've nothing to do and can exit here */
1829 /* Potential "servicePrincipalName" changes in the same request have to
1830 * be handled before the update (Windows behaviour). */
1831 el = ldb_msg_find_element(ac->msg, "servicePrincipalName");
1833 msg = ldb_msg_new(ac->msg);
1835 return ldb_module_oom(ac->module);
1837 msg->dn = ac->msg->dn;
1840 ret = ldb_msg_add(msg, el, el->flags);
1841 if (ret != LDB_SUCCESS) {
1845 ldb_msg_remove_element(ac->msg, el);
1847 el = ldb_msg_find_element(ac->msg,
1848 "servicePrincipalName");
1849 } while (el != NULL);
1851 ret = dsdb_module_modify(ac->module, msg,
1852 DSDB_FLAG_NEXT_MODULE, ac->req);
1853 if (ret != LDB_SUCCESS) {
1859 /* Fetch the "servicePrincipalName"s if any */
1860 ret = dsdb_module_search(ac->module, ac, &res, ac->msg->dn, LDB_SCOPE_BASE, attrs,
1861 DSDB_FLAG_NEXT_MODULE, ac->req, NULL);
1862 if (ret != LDB_SUCCESS) {
1865 if ((res->count != 1) || (res->msgs[0]->num_elements > 1)) {
1866 return ldb_operr(ldb);
1869 if (res->msgs[0]->num_elements == 1) {
1870 /* Yes, we do have "servicePrincipalName"s. First we update them
1871 * locally, that means we do always substitute the current
1872 * "dNSHostName" with the new one and/or "sAMAccountName"
1873 * without "$" with the new one and then we append this to the
1874 * modification request (Windows behaviour). */
1876 for (i = 0; i < res->msgs[0]->elements[0].num_values; i++) {
1877 char *old_str, *new_str, *pos;
1881 res->msgs[0]->elements[0].values[i].data;
1883 new_str = talloc_strdup(ac->msg,
1884 strtok_r(old_str, "/", &pos));
1885 if (new_str == NULL) {
1886 return ldb_module_oom(ac->module);
1889 while ((tok = strtok_r(NULL, "/", &pos)) != NULL) {
1890 if ((dns_hostname != NULL) &&
1891 (strcasecmp(tok, old_dns_hostname) == 0)) {
1894 if ((sam_accountname != NULL) &&
1895 (strcasecmp(tok, old_sam_accountname) == 0)) {
1896 tok = sam_accountname;
1899 new_str = talloc_asprintf(ac->msg, "%s/%s",
1901 if (new_str == NULL) {
1902 return ldb_module_oom(ac->module);
1906 ret = ldb_msg_add_string(ac->msg,
1907 "servicePrincipalName",
1909 if (ret != LDB_SUCCESS) {
1914 el = ldb_msg_find_element(ac->msg, "servicePrincipalName");
1915 el->flags = LDB_FLAG_MOD_REPLACE;
1925 static int samldb_add(struct ldb_module *module, struct ldb_request *req)
1927 struct ldb_context *ldb;
1928 struct samldb_ctx *ac;
1931 ldb = ldb_module_get_ctx(module);
1932 ldb_debug(ldb, LDB_DEBUG_TRACE, "samldb_add\n");
1934 /* do not manipulate our control entries */
1935 if (ldb_dn_is_special(req->op.add.message->dn)) {
1936 return ldb_next_request(module, req);
1939 ac = samldb_ctx_init(module, req);
1941 return ldb_operr(ldb);
1944 /* build the new msg */
1945 ac->msg = ldb_msg_copy_shallow(ac, req->op.add.message);
1946 if (ac->msg == NULL) {
1948 ldb_debug(ldb, LDB_DEBUG_FATAL,
1949 "samldb_add: ldb_msg_copy_shallow failed!\n");
1950 return ldb_operr(ldb);
1953 if (samdb_find_attribute(ldb, ac->msg,
1954 "objectclass", "user") != NULL) {
1957 ret = samldb_prim_group_trigger(ac);
1958 if (ret != LDB_SUCCESS) {
1962 ret = samldb_objectclass_trigger(ac);
1963 if (ret != LDB_SUCCESS) {
1967 return samldb_fill_object(ac);
1970 if (samdb_find_attribute(ldb, ac->msg,
1971 "objectclass", "group") != NULL) {
1974 ret = samldb_objectclass_trigger(ac);
1975 if (ret != LDB_SUCCESS) {
1979 return samldb_fill_object(ac);
1982 /* perhaps a foreignSecurityPrincipal? */
1983 if (samdb_find_attribute(ldb, ac->msg,
1985 "foreignSecurityPrincipal") != NULL) {
1986 return samldb_fill_foreignSecurityPrincipal_object(ac);
1989 if (samdb_find_attribute(ldb, ac->msg,
1990 "objectclass", "classSchema") != NULL) {
1991 ret = samldb_schema_info_update(ac);
1992 if (ret != LDB_SUCCESS) {
1997 ac->type = "classSchema";
1998 return samldb_fill_object(ac);
2001 if (samdb_find_attribute(ldb, ac->msg,
2002 "objectclass", "attributeSchema") != NULL) {
2003 ret = samldb_schema_info_update(ac);
2004 if (ret != LDB_SUCCESS) {
2009 ac->type = "attributeSchema";
2010 return samldb_fill_object(ac);
2015 /* nothing matched, go on */
2016 return ldb_next_request(module, req);
2020 static int samldb_modify(struct ldb_module *module, struct ldb_request *req)
2022 struct ldb_context *ldb;
2023 struct samldb_ctx *ac;
2024 struct ldb_message_element *el, *el2;
2025 bool modified = false;
2028 if (ldb_dn_is_special(req->op.mod.message->dn)) {
2029 /* do not manipulate our control entries */
2030 return ldb_next_request(module, req);
2033 ldb = ldb_module_get_ctx(module);
2035 /* make sure that "objectSid" is not specified */
2036 el = ldb_msg_find_element(req->op.mod.message, "objectSid");
2038 ldb_set_errstring(ldb,
2039 "samldb: objectSid must not be specified!");
2040 return LDB_ERR_UNWILLING_TO_PERFORM;
2042 /* make sure that "sAMAccountType" is not specified */
2043 el = ldb_msg_find_element(req->op.mod.message, "sAMAccountType");
2045 ldb_set_errstring(ldb,
2046 "samldb: sAMAccountType must not be specified!");
2047 return LDB_ERR_UNWILLING_TO_PERFORM;
2049 /* make sure that "isCriticalSystemObject" is not specified */
2050 el = ldb_msg_find_element(req->op.mod.message, "isCriticalSystemObject");
2052 if (ldb_request_get_control(req, LDB_CONTROL_RELAX_OID) == NULL) {
2053 ldb_set_errstring(ldb,
2054 "samldb: isCriticalSystemObject must not be specified!");
2055 return LDB_ERR_UNWILLING_TO_PERFORM;
2059 /* msDS-IntId is not allowed to be modified
2060 * except when modification comes from replication */
2061 if (ldb_msg_find_element(req->op.mod.message, "msDS-IntId")) {
2062 if (!ldb_request_get_control(req,
2063 DSDB_CONTROL_REPLICATED_UPDATE_OID)) {
2064 return LDB_ERR_CONSTRAINT_VIOLATION;
2068 ac = samldb_ctx_init(module, req);
2070 return ldb_operr(ldb);
2073 /* build the new msg */
2074 ac->msg = ldb_msg_copy_shallow(ac, req->op.mod.message);
2075 if (ac->msg == NULL) {
2077 ldb_debug(ldb, LDB_DEBUG_FATAL,
2078 "samldb_modify: ldb_msg_copy_shallow failed!\n");
2079 return ldb_operr(ldb);
2082 el = ldb_msg_find_element(ac->msg, "primaryGroupID");
2084 ret = samldb_prim_group_trigger(ac);
2085 if (ret != LDB_SUCCESS) {
2090 el = ldb_msg_find_element(ac->msg, "userAccountControl");
2093 ret = samldb_user_account_control_change(ac);
2094 if (ret != LDB_SUCCESS) {
2099 el = ldb_msg_find_element(ac->msg, "groupType");
2102 ret = samldb_group_type_change(ac);
2103 if (ret != LDB_SUCCESS) {
2108 el = ldb_msg_find_element(ac->msg, "sAMAccountName");
2110 ret = samldb_sam_accountname_check(ac);
2111 if (ret != LDB_SUCCESS) {
2116 el = ldb_msg_find_element(ac->msg, "member");
2118 ret = samldb_member_check(ac);
2119 if (ret != LDB_SUCCESS) {
2124 el = ldb_msg_find_element(ac->msg, "description");
2126 ret = samldb_description_check(ac, &modified);
2127 if (ret != LDB_SUCCESS) {
2132 el = ldb_msg_find_element(ac->msg, "dNSHostName");
2133 el2 = ldb_msg_find_element(ac->msg, "sAMAccountName");
2134 if ((el != NULL) || (el2 != NULL)) {
2136 ret = samldb_service_principal_names_change(ac);
2137 if (ret != LDB_SUCCESS) {
2143 struct ldb_request *child_req;
2145 /* Now perform the real modifications as a child request */
2146 ret = ldb_build_mod_req(&child_req, ldb, ac,
2149 req, dsdb_next_callback,
2151 LDB_REQ_SET_LOCATION(child_req);
2152 if (ret != LDB_SUCCESS) {
2156 return ldb_next_request(module, child_req);
2161 /* no change which interests us, go on */
2162 return ldb_next_request(module, req);
2167 static int samldb_prim_group_users_check(struct samldb_ctx *ac)
2169 struct ldb_context *ldb;
2170 struct dom_sid *sid;
2174 struct ldb_result *res;
2175 const char *attrs[] = { "objectSid", NULL };
2176 const char *noattrs[] = { NULL };
2178 ldb = ldb_module_get_ctx(ac->module);
2180 /* Finds out the SID/RID of the SAM object */
2181 ret = dsdb_module_search_dn(ac->module, ac, &res, ac->req->op.del.dn, attrs, DSDB_FLAG_NEXT_MODULE, ac->req);
2182 if (ret != LDB_SUCCESS) {
2186 sid = samdb_result_dom_sid(ac, res->msgs[0], "objectSid");
2188 /* No SID - it might not be a SAM object - therefore ok */
2191 status = dom_sid_split_rid(ac, sid, NULL, &rid);
2192 if (!NT_STATUS_IS_OK(status)) {
2193 return ldb_operr(ldb);
2196 /* Special object (security principal?) */
2200 /* Deny delete requests from groups which are primary ones */
2201 ret = dsdb_module_search(ac->module, ac, &res, NULL, LDB_SCOPE_SUBTREE, noattrs,
2202 DSDB_FLAG_NEXT_MODULE,
2204 "(&(primaryGroupID=%u)(objectClass=user))", rid);
2205 if (ret != LDB_SUCCESS) {
2208 if (res->count > 0) {
2209 return LDB_ERR_ENTRY_ALREADY_EXISTS;
2215 static int samldb_delete(struct ldb_module *module, struct ldb_request *req)
2217 struct samldb_ctx *ac;
2220 if (ldb_dn_is_special(req->op.del.dn)) {
2221 /* do not manipulate our control entries */
2222 return ldb_next_request(module, req);
2225 ac = samldb_ctx_init(module, req);
2227 return ldb_operr(ldb_module_get_ctx(module));
2230 ret = samldb_prim_group_users_check(ac);
2231 if (ret != LDB_SUCCESS) {
2237 return ldb_next_request(module, req);
2242 static int samldb_extended_allocate_rid_pool(struct ldb_module *module, struct ldb_request *req)
2244 struct ldb_context *ldb = ldb_module_get_ctx(module);
2245 struct dsdb_fsmo_extended_op *exop;
2248 exop = talloc_get_type(req->op.extended.data,
2249 struct dsdb_fsmo_extended_op);
2251 ldb_set_errstring(ldb,
2252 "samldb_extended_allocate_rid_pool: invalid extended data");
2253 return LDB_ERR_PROTOCOL_ERROR;
2256 ret = ridalloc_allocate_rid_pool_fsmo(module, exop, req);
2257 if (ret != LDB_SUCCESS) {
2261 return ldb_module_done(req, NULL, NULL, LDB_SUCCESS);
2264 static int samldb_extended(struct ldb_module *module, struct ldb_request *req)
2266 if (strcmp(req->op.extended.oid, DSDB_EXTENDED_ALLOCATE_RID_POOL) == 0) {
2267 return samldb_extended_allocate_rid_pool(module, req);
2270 return ldb_next_request(module, req);
2274 static const struct ldb_module_ops ldb_samldb_module_ops = {
2277 .modify = samldb_modify,
2278 .del = samldb_delete,
2279 .extended = samldb_extended
2283 int ldb_samldb_module_init(const char *version)
2285 LDB_MODULE_CHECK_VERSION(version);
2286 return ldb_register_module(&ldb_samldb_module_ops);