4 Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005
5 Copyright (C) Simo Sorce 2004-2008
6 Copyright (C) Matthias Dieter Wallnöfer 2009-2010
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: add embedded user/group creation functionality
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 "libcli/security/security.h"
38 #include "librpc/gen_ndr/ndr_security.h"
39 #include "../lib/util/util_ldb.h"
41 #include "param/param.h"
45 typedef int (*samldb_step_fn_t)(struct samldb_ctx *);
48 struct samldb_step *next;
53 struct ldb_module *module;
54 struct ldb_request *req;
56 /* used for add operations */
59 /* the resulting message */
60 struct ldb_message *msg;
62 /* used in "samldb_find_for_defaultObjectCategory" */
63 struct ldb_dn *dn, *res_dn;
65 /* all the async steps necessary to complete the operation */
66 struct samldb_step *steps;
67 struct samldb_step *curstep;
69 /* If someone set an ares to forward controls and response back to the caller */
70 struct ldb_reply *ares;
73 static struct samldb_ctx *samldb_ctx_init(struct ldb_module *module,
74 struct ldb_request *req)
76 struct ldb_context *ldb;
77 struct samldb_ctx *ac;
79 ldb = ldb_module_get_ctx(module);
81 ac = talloc_zero(req, struct samldb_ctx);
93 static int samldb_add_step(struct samldb_ctx *ac, samldb_step_fn_t fn)
95 struct samldb_step *step, *stepper;
97 step = talloc_zero(ac, struct samldb_step);
99 return ldb_oom(ldb_module_get_ctx(ac->module));
104 if (ac->steps == NULL) {
108 if (ac->curstep == NULL)
109 return ldb_operr(ldb_module_get_ctx(ac->module));
110 for (stepper = ac->curstep; stepper->next != NULL;
111 stepper = stepper->next);
112 stepper->next = step;
118 static int samldb_first_step(struct samldb_ctx *ac)
120 if (ac->steps == NULL) {
121 return ldb_operr(ldb_module_get_ctx(ac->module));
124 ac->curstep = ac->steps;
125 return ac->curstep->fn(ac);
128 static int samldb_next_step(struct samldb_ctx *ac)
130 if (ac->curstep->next) {
131 ac->curstep = ac->curstep->next;
132 return ac->curstep->fn(ac);
135 /* we exit the samldb module here */
136 /* If someone set an ares to forward controls and response back to the caller, use them */
138 return ldb_module_done(ac->req, ac->ares->controls,
139 ac->ares->response, LDB_SUCCESS);
141 return ldb_module_done(ac->req, NULL, NULL, LDB_SUCCESS);
146 /* sAMAccountName handling */
148 static int samldb_generate_sAMAccountName(struct ldb_context *ldb, struct ldb_message *msg)
152 /* Format: $000000-000000000000 */
154 name = talloc_asprintf(msg, "$%.6X-%.6X%.6X",
155 (unsigned int)generate_random(),
156 (unsigned int)generate_random(),
157 (unsigned int)generate_random());
161 return ldb_msg_add_steal_string(msg, "sAMAccountName", name);
164 static int samldb_check_sAMAccountName(struct samldb_ctx *ac)
166 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
170 if (ldb_msg_find_element(ac->msg, "sAMAccountName") == NULL) {
171 ret = samldb_generate_sAMAccountName(ldb, ac->msg);
172 if (ret != LDB_SUCCESS) {
177 name = ldb_msg_find_attr_as_string(ac->msg, "sAMAccountName", NULL);
179 return ldb_operr(ldb);
182 ret = samdb_search_count(ldb, NULL, "(sAMAccountName=%s)",
183 ldb_binary_encode_string(ac, name));
184 if ((ret < 0) || (ret > 1)) {
185 return ldb_operr(ldb);
188 return LDB_ERR_ENTRY_ALREADY_EXISTS;
191 return samldb_next_step(ac);
194 /* sAMAccountType handling */
196 static int samldb_check_sAMAccountType(struct samldb_ctx *ac)
198 struct ldb_context *ldb;
199 unsigned int account_type;
200 unsigned int group_type;
204 ldb = ldb_module_get_ctx(ac->module);
206 /* make sure sAMAccountType is not specified */
207 if (ldb_msg_find_element(ac->msg, "sAMAccountType") != NULL) {
208 ldb_asprintf_errstring(ldb,
209 "sAMAccountType must not be specified!");
210 return LDB_ERR_UNWILLING_TO_PERFORM;
213 if (strcmp("user", ac->type) == 0) {
214 uac = samdb_result_uint(ac->msg, "userAccountControl", 0);
216 ldb_asprintf_errstring(ldb,
217 "userAccountControl invalid!");
218 return LDB_ERR_UNWILLING_TO_PERFORM;
220 account_type = ds_uf2atype(uac);
221 ret = samdb_msg_add_uint(ldb,
225 if (ret != LDB_SUCCESS) {
229 } else if (strcmp("group", ac->type) == 0) {
230 group_type = samdb_result_uint(ac->msg, "groupType", 0);
231 if (group_type == 0) {
232 ldb_asprintf_errstring(ldb,
233 "groupType invalid!\n");
234 return LDB_ERR_UNWILLING_TO_PERFORM;
236 account_type = ds_gtype2atype(group_type);
237 ret = samdb_msg_add_uint(ldb,
241 if (ret != LDB_SUCCESS) {
247 return samldb_next_step(ac);
250 /* primaryGroupID handling */
252 static int samldb_check_primaryGroupID(struct samldb_ctx *ac)
254 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
255 struct ldb_dn *prim_group_dn;
260 rid = samdb_result_uint(ac->msg, "primaryGroupID", (uint32_t) -1);
261 if (rid == (uint32_t) -1) {
262 uint32_t uac = samdb_result_uint(ac->msg, "userAccountControl",
265 rid = ds_uf2prim_group_rid(uac);
267 ret = samdb_msg_add_uint(ldb, ac->msg, ac->msg,
268 "primaryGroupID", rid);
269 if (ret != LDB_SUCCESS) {
274 sid = dom_sid_add_rid(ac, samdb_domain_sid(ldb), rid);
276 return ldb_operr(ldb);
279 prim_group_dn = samdb_search_dn(ldb, ac, NULL, "(objectSID=%s)",
280 dom_sid_string(ac, sid));
281 if (prim_group_dn == NULL) {
282 ldb_asprintf_errstring(ldb,
283 "Failed to find primary group with RID %u!",
285 return LDB_ERR_UNWILLING_TO_PERFORM;
288 return samldb_next_step(ac);
292 static bool samldb_msg_add_sid(struct ldb_message *msg,
294 const struct dom_sid *sid)
297 enum ndr_err_code ndr_err;
299 ndr_err = ndr_push_struct_blob(&v, msg, sid,
300 (ndr_push_flags_fn_t)ndr_push_dom_sid);
301 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
304 return (ldb_msg_add_value(msg, name, &v, NULL) == 0);
308 /* allocate a SID using our RID Set */
309 static int samldb_allocate_sid(struct samldb_ctx *ac)
313 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
316 ret = ridalloc_allocate_rid(ac->module, &rid);
317 if (ret != LDB_SUCCESS) {
321 sid = dom_sid_add_rid(ac, samdb_domain_sid(ldb), rid);
323 return ldb_module_oom(ac->module);
326 if ( ! samldb_msg_add_sid(ac->msg, "objectSid", sid)) {
327 return ldb_operr(ldb);
330 return samldb_next_step(ac);
334 see if a krbtgt_number is available
336 static bool samldb_krbtgtnumber_available(struct samldb_ctx *ac, unsigned krbtgt_number)
338 TALLOC_CTX *tmp_ctx = talloc_new(ac);
339 struct ldb_result *res;
340 const char *attrs[] = { NULL };
343 ret = dsdb_module_search(ac->module, tmp_ctx, &res, NULL, LDB_SCOPE_SUBTREE,
344 attrs, DSDB_FLAG_NEXT_MODULE,
345 "msDC-SecondaryKrbTgtNumber=%u", krbtgt_number);
346 if (ret == LDB_SUCCESS && res->count == 0) {
347 talloc_free(tmp_ctx);
350 talloc_free(tmp_ctx);
354 /* special handling for add in RODC join */
355 static int samldb_rodc_add(struct samldb_ctx *ac)
357 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
358 unsigned krbtgt_number, i_start, i;
361 /* find a unused msDC-SecondaryKrbTgtNumber */
362 i_start = generate_random() & 0xFFFF;
367 for (i=i_start; i<=0xFFFF; i++) {
368 if (samldb_krbtgtnumber_available(ac, i)) {
373 for (i=1; i<i_start; i++) {
374 if (samldb_krbtgtnumber_available(ac, i)) {
380 ldb_asprintf_errstring(ldb_module_get_ctx(ac->module),
381 "%08X: Unable to find available msDS-SecondaryKrbTgtNumber",
382 W_ERROR_V(WERR_NO_SYSTEM_RESOURCES));
383 return LDB_ERR_OTHER;
386 ret = ldb_msg_add_empty(ac->msg, "msDS-SecondaryKrbTgtNumber", LDB_FLAG_INTERNAL_DISABLE_VALIDATION, NULL);
387 if (ret != LDB_SUCCESS) {
388 return ldb_operr(ldb);
391 ret = ldb_msg_add_fmt(ac->msg, "msDS-SecondaryKrbTgtNumber", "%u", krbtgt_number);
392 if (ret != LDB_SUCCESS) {
393 return ldb_operr(ldb);
396 ret = ldb_msg_add_fmt(ac->msg, "sAMAccountName", "krbtgt_%u", krbtgt_number);
397 if (ret != LDB_SUCCESS) {
398 return ldb_operr(ldb);
401 return samldb_next_step(ac);
404 static int samldb_find_for_defaultObjectCategory(struct samldb_ctx *ac)
406 struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
407 struct ldb_result *res;
408 const char *no_attrs[] = { NULL };
413 ret = dsdb_module_search(ac->module, ac, &res,
414 ac->dn, LDB_SCOPE_BASE, no_attrs,
415 DSDB_SEARCH_SHOW_DN_IN_STORAGE_FORMAT | DSDB_FLAG_NEXT_MODULE,
416 "(objectClass=classSchema)");
417 if (ret == LDB_ERR_NO_SUCH_OBJECT) {
418 /* Don't be pricky when the DN doesn't exist if we have the */
419 /* RELAX control specified */
420 if (ldb_request_get_control(ac->req,
421 LDB_CONTROL_RELAX_OID) == NULL) {
422 ldb_set_errstring(ldb,
423 "samldb_find_defaultObjectCategory: "
424 "Invalid DN for 'defaultObjectCategory'!");
425 return LDB_ERR_CONSTRAINT_VIOLATION;
428 if ((ret != LDB_ERR_NO_SUCH_OBJECT) && (ret != LDB_SUCCESS)) {
434 return samldb_next_step(ac);
438 * msDS-IntId attributeSchema attribute handling
439 * during LDB_ADD request processing
441 static int samldb_add_handle_msDS_IntId(struct samldb_ctx *ac)
446 uint32_t system_flags;
447 struct ldb_context *ldb;
448 struct ldb_result *ldb_res;
449 struct ldb_dn *schema_dn;
451 ldb = ldb_module_get_ctx(ac->module);
452 schema_dn = ldb_get_schema_basedn(ldb);
454 /* replicated update should always go through */
455 if (ldb_request_get_control(ac->req, DSDB_CONTROL_REPLICATED_UPDATE_OID)) {
459 /* msDS-IntId is handled by system and should never be
460 * passed by clients */
461 if (ldb_msg_find_element(ac->msg, "msDS-IntId")) {
462 return LDB_ERR_UNWILLING_TO_PERFORM;
465 /* do not generate msDS-IntId if Relax control is passed */
466 if (ldb_request_get_control(ac->req, LDB_CONTROL_RELAX_OID)) {
470 /* check Functional Level */
471 if (dsdb_functional_level(ldb) < DS_DOMAIN_FUNCTION_2003) {
475 /* check systemFlags for SCHEMA_BASE_OBJECT flag */
476 system_flags = ldb_msg_find_attr_as_uint(ac->msg, "systemFlags", 0);
477 if (system_flags & SYSTEM_FLAG_SCHEMA_BASE_OBJECT) {
481 /* Generate new value for msDs-IntId
482 * Value should be in 0x80000000..0xBFFFFFFF range */
483 msds_intid = generate_random() % 0X3FFFFFFF;
484 msds_intid += 0x80000000;
486 /* probe id values until unique one is found */
489 if (msds_intid > 0xBFFFFFFF) {
490 msds_intid = 0x80000001;
493 ret = dsdb_module_search(ac->module, ac,
495 schema_dn, LDB_SCOPE_ONELEVEL, NULL,
496 DSDB_FLAG_NEXT_MODULE,
497 "(msDS-IntId=%d)", msds_intid);
498 if (ret != LDB_SUCCESS) {
499 ldb_debug_set(ldb, LDB_DEBUG_ERROR,
500 __location__": Searching for msDS-IntId=%d failed - %s\n",
503 return ldb_operr(ldb);
505 id_exists = (ldb_res->count > 0);
507 talloc_free(ldb_res);
510 return ldb_msg_add_fmt(ac->msg, "msDS-IntId", "%d", msds_intid);
515 * samldb_add_entry (async)
518 static int samldb_add_entry_callback(struct ldb_request *req,
519 struct ldb_reply *ares)
521 struct ldb_context *ldb;
522 struct samldb_ctx *ac;
525 ac = talloc_get_type(req->context, struct samldb_ctx);
526 ldb = ldb_module_get_ctx(ac->module);
529 return ldb_module_done(ac->req, NULL, NULL,
530 LDB_ERR_OPERATIONS_ERROR);
533 if (ares->type == LDB_REPLY_REFERRAL) {
534 return ldb_module_send_referral(ac->req, ares->referral);
537 if (ares->error != LDB_SUCCESS) {
538 return ldb_module_done(ac->req, ares->controls,
539 ares->response, ares->error);
541 if (ares->type != LDB_REPLY_DONE) {
542 ldb_set_errstring(ldb,
543 "Invalid reply type!\n");
544 return ldb_module_done(ac->req, NULL, NULL,
545 LDB_ERR_OPERATIONS_ERROR);
548 /* The caller may wish to get controls back from the add */
549 ac->ares = talloc_steal(ac, ares);
551 ret = samldb_next_step(ac);
552 if (ret != LDB_SUCCESS) {
553 return ldb_module_done(ac->req, NULL, NULL, ret);
558 static int samldb_add_entry(struct samldb_ctx *ac)
560 struct ldb_context *ldb;
561 struct ldb_request *req;
564 ldb = ldb_module_get_ctx(ac->module);
566 ret = ldb_build_add_req(&req, ldb, ac,
569 ac, samldb_add_entry_callback,
571 if (ret != LDB_SUCCESS) {
575 return ldb_next_request(ac->module, req);
579 * return true if msg carries an attributeSchema that is intended to be RODC
580 * filtered but is also a system-critical attribute.
582 static bool check_rodc_critical_attribute(struct ldb_message *msg)
584 uint32_t schemaFlagsEx, searchFlags, rodc_filtered_flags;
586 schemaFlagsEx = ldb_msg_find_attr_as_uint(msg, "schemaFlagsEx", 0);
587 searchFlags = ldb_msg_find_attr_as_uint(msg, "searchFlags", 0);
588 rodc_filtered_flags = (SEARCH_FLAG_RODC_ATTRIBUTE | SEARCH_FLAG_CONFIDENTIAL);
590 if ((schemaFlagsEx & SCHEMA_FLAG_ATTR_IS_CRITICAL) &&
591 ((searchFlags & rodc_filtered_flags) == rodc_filtered_flags)) {
599 static int samldb_fill_object(struct samldb_ctx *ac, const char *type)
601 struct ldb_context *ldb;
602 struct loadparm_context *lp_ctx;
603 enum sid_generator sid_generator;
605 struct ldb_control *rodc_control;
608 ldb = ldb_module_get_ctx(ac->module);
610 /* Add informations for the different account types */
612 if (strcmp(ac->type, "user") == 0) {
613 ret = samdb_find_or_add_attribute(ldb, ac->msg,
614 "userAccountControl", "546");
615 if (ret != LDB_SUCCESS) return ret;
616 ret = samdb_find_or_add_attribute(ldb, ac->msg,
618 if (ret != LDB_SUCCESS) return ret;
619 ret = samdb_find_or_add_attribute(ldb, ac->msg,
621 if (ret != LDB_SUCCESS) return ret;
622 ret = samdb_find_or_add_attribute(ldb, ac->msg,
624 if (ret != LDB_SUCCESS) return ret;
625 ret = samdb_find_or_add_attribute(ldb, ac->msg,
626 "badPasswordTime", "0");
627 if (ret != LDB_SUCCESS) return ret;
628 ret = samdb_find_or_add_attribute(ldb, ac->msg,
630 if (ret != LDB_SUCCESS) return ret;
631 ret = samdb_find_or_add_attribute(ldb, ac->msg,
633 if (ret != LDB_SUCCESS) return ret;
634 ret = samdb_find_or_add_attribute(ldb, ac->msg,
636 if (ret != LDB_SUCCESS) return ret;
637 ret = samdb_find_or_add_attribute(ldb, ac->msg,
638 "accountExpires", "9223372036854775807");
639 if (ret != LDB_SUCCESS) return ret;
640 ret = samdb_find_or_add_attribute(ldb, ac->msg,
642 if (ret != LDB_SUCCESS) return ret;
643 } else if (strcmp(ac->type, "group") == 0) {
644 ret = samdb_find_or_add_attribute(ldb, ac->msg,
645 "groupType", "-2147483646");
646 if (ret != LDB_SUCCESS) return ret;
647 } else if (strcmp(ac->type, "classSchema") == 0) {
648 const struct ldb_val *rdn_value, *def_obj_cat_val;
650 ret = samdb_find_or_add_attribute(ldb, ac->msg,
652 if (ret != LDB_SUCCESS) return ret;
654 /* do not allow to mark an attributeSchema as RODC filtered if it
655 * is system-critical */
656 if (check_rodc_critical_attribute(ac->msg)) {
657 ldb_asprintf_errstring(ldb, "Refusing schema add of %s - cannot combine critical class with RODC filtering",
658 ldb_dn_get_linearized(ac->msg->dn));
659 return LDB_ERR_UNWILLING_TO_PERFORM;
663 rdn_value = ldb_dn_get_rdn_val(ac->msg->dn);
664 if (!ldb_msg_find_element(ac->msg, "lDAPDisplayName")) {
665 /* the RDN has prefix "CN" */
666 ret = ldb_msg_add_string(ac->msg, "lDAPDisplayName",
667 samdb_cn_to_lDAPDisplayName(ac,
668 (const char *) rdn_value->data));
669 if (ret != LDB_SUCCESS) {
675 if (!ldb_msg_find_element(ac->msg, "schemaIDGUID")) {
678 guid = GUID_random();
679 ret = dsdb_msg_add_guid(ac->msg, &guid, "schemaIDGUID");
680 if (ret != LDB_SUCCESS) {
686 def_obj_cat_val = ldb_msg_find_ldb_val(ac->msg,
687 "defaultObjectCategory");
688 if (def_obj_cat_val != NULL) {
689 /* "defaultObjectCategory" has been set by the caller.
690 * Do some checks for consistency.
691 * NOTE: The real constraint check (that
692 * 'defaultObjectCategory' is the DN of the new
693 * objectclass or any parent of it) is still incomplete.
694 * For now we say that 'defaultObjectCategory' is valid
695 * if it exists and it is of objectclass "classSchema".
697 ac->dn = ldb_dn_from_ldb_val(ac, ldb, def_obj_cat_val);
698 if (ac->dn == NULL) {
699 ldb_set_errstring(ldb,
700 "Invalid DN for 'defaultObjectCategory'!");
701 return LDB_ERR_CONSTRAINT_VIOLATION;
704 /* "defaultObjectCategory" has not been set by the
705 * caller. Use the entry DN for it. */
706 ac->dn = ac->msg->dn;
708 ret = samdb_msg_add_string(ldb, ac, ac->msg,
709 "defaultObjectCategory",
710 ldb_dn_get_linearized(ac->dn));
711 if (ret != LDB_SUCCESS) {
717 ret = samldb_add_step(ac, samldb_add_entry);
718 if (ret != LDB_SUCCESS) return ret;
720 /* Now perform the checks for the 'defaultObjectCategory'. The
721 * lookup DN was already saved in "ac->dn" */
722 ret = samldb_add_step(ac, samldb_find_for_defaultObjectCategory);
723 if (ret != LDB_SUCCESS) return ret;
725 return samldb_first_step(ac);
726 } else if (strcmp(ac->type, "attributeSchema") == 0) {
727 const struct ldb_val *rdn_value;
728 rdn_value = ldb_dn_get_rdn_val(ac->msg->dn);
729 if (!ldb_msg_find_element(ac->msg, "lDAPDisplayName")) {
730 /* the RDN has prefix "CN" */
731 ret = ldb_msg_add_string(ac->msg, "lDAPDisplayName",
732 samdb_cn_to_lDAPDisplayName(ac,
733 (const char *) rdn_value->data));
734 if (ret != LDB_SUCCESS) {
740 /* do not allow to mark an attributeSchema as RODC filtered if it
741 * is system-critical */
742 if (check_rodc_critical_attribute(ac->msg)) {
743 ldb_asprintf_errstring(ldb, "Refusing schema add of %s - cannot combine critical attribute with RODC filtering",
744 ldb_dn_get_linearized(ac->msg->dn));
745 return LDB_ERR_UNWILLING_TO_PERFORM;
748 ret = samdb_find_or_add_attribute(ldb, ac->msg,
749 "isSingleValued", "FALSE");
750 if (ret != LDB_SUCCESS) return ret;
752 if (!ldb_msg_find_element(ac->msg, "schemaIDGUID")) {
755 guid = GUID_random();
756 ret = dsdb_msg_add_guid(ac->msg, &guid, "schemaIDGUID");
757 if (ret != LDB_SUCCESS) {
763 /* handle msDS-IntID attribute */
764 ret = samldb_add_handle_msDS_IntId(ac);
765 if (ret != LDB_SUCCESS) return ret;
767 ret = samldb_add_step(ac, samldb_add_entry);
768 if (ret != LDB_SUCCESS) return ret;
770 return samldb_first_step(ac);
772 ldb_asprintf_errstring(ldb,
773 "Invalid entry type!");
774 return LDB_ERR_OPERATIONS_ERROR;
777 rodc_control = ldb_request_get_control(ac->req, LDB_CONTROL_RODC_DCPROMO_OID);
779 /* see [MS-ADTS] 3.1.1.3.4.1.23 LDAP_SERVER_RODC_DCPROMO_OID */
780 rodc_control->critical = false;
781 ret = samldb_add_step(ac, samldb_rodc_add);
782 if (ret != LDB_SUCCESS) return ret;
785 /* check if we have a valid sAMAccountName */
786 ret = samldb_add_step(ac, samldb_check_sAMAccountName);
787 if (ret != LDB_SUCCESS) return ret;
789 /* check account_type/group_type */
790 ret = samldb_add_step(ac, samldb_check_sAMAccountType);
791 if (ret != LDB_SUCCESS) return ret;
793 /* check if we have a valid primary group ID */
794 if (strcmp(ac->type, "user") == 0) {
795 ret = samldb_add_step(ac, samldb_check_primaryGroupID);
796 if (ret != LDB_SUCCESS) return ret;
799 lp_ctx = talloc_get_type(ldb_get_opaque(ldb, "loadparm"),
800 struct loadparm_context);
802 /* don't allow objectSID to be specified without the RELAX control */
803 sid = samdb_result_dom_sid(ac, ac->msg, "objectSid");
804 if (sid && !ldb_request_get_control(ac->req, LDB_CONTROL_RELAX_OID) &&
805 !dsdb_module_am_system(ac->module)) {
806 ldb_asprintf_errstring(ldb, "No SID may be specified in user/group creation for %s",
807 ldb_dn_get_linearized(ac->msg->dn));
808 return LDB_ERR_UNWILLING_TO_PERFORM;
812 sid_generator = lpcfg_sid_generator(lp_ctx);
813 if (sid_generator == SID_GENERATOR_INTERNAL) {
814 ret = samldb_add_step(ac, samldb_allocate_sid);
815 if (ret != LDB_SUCCESS) return ret;
819 /* finally proceed with adding the entry */
820 ret = samldb_add_step(ac, samldb_add_entry);
821 if (ret != LDB_SUCCESS) return ret;
823 return samldb_first_step(ac);
826 static int samldb_fill_foreignSecurityPrincipal_object(struct samldb_ctx *ac)
828 struct ldb_context *ldb;
832 ldb = ldb_module_get_ctx(ac->module);
834 sid = samdb_result_dom_sid(ac->msg, ac->msg, "objectSid");
836 sid = dom_sid_parse_talloc(ac->msg,
837 (const char *)ldb_dn_get_rdn_val(ac->msg->dn)->data);
839 ldb_set_errstring(ldb,
840 "No valid SID found in "
841 "ForeignSecurityPrincipal CN!");
842 return LDB_ERR_CONSTRAINT_VIOLATION;
844 if (! samldb_msg_add_sid(ac->msg, "objectSid", sid)) {
845 return ldb_operr(ldb);
849 /* finally proceed with adding the entry */
850 ret = samldb_add_step(ac, samldb_add_entry);
851 if (ret != LDB_SUCCESS) return ret;
853 return samldb_first_step(ac);
856 static int samldb_schema_info_update(struct samldb_ctx *ac)
859 struct ldb_context *ldb;
860 struct dsdb_schema *schema;
862 /* replicated update should always go through */
863 if (ldb_request_get_control(ac->req, DSDB_CONTROL_REPLICATED_UPDATE_OID)) {
867 /* do not update schemaInfo during provisioning */
868 if (ldb_request_get_control(ac->req, LDB_CONTROL_RELAX_OID)) {
872 ldb = ldb_module_get_ctx(ac->module);
873 schema = dsdb_get_schema(ldb, NULL);
875 ldb_debug_set(ldb, LDB_DEBUG_FATAL,
876 "samldb_schema_info_update: no dsdb_schema loaded");
877 DEBUG(0,(__location__ ": %s\n", ldb_errstring(ldb)));
878 return ldb_operr(ldb);
881 werr = dsdb_module_schema_info_update(ac->module, schema, DSDB_FLAG_NEXT_MODULE);
882 if (!W_ERROR_IS_OK(werr)) {
883 ldb_debug_set(ldb, LDB_DEBUG_FATAL,
884 "samldb_schema_info_update: "
885 "dsdb_module_schema_info_update failed with %s",
887 DEBUG(0,(__location__ ": %s\n", ldb_errstring(ldb)));
888 return ldb_operr(ldb);
895 static int samldb_prim_group_change(struct samldb_ctx *ac)
897 struct ldb_context *ldb;
898 const char * attrs[] = { "primaryGroupID", "memberOf", NULL };
899 struct ldb_result *res;
900 struct ldb_message_element *el;
901 struct ldb_message *msg;
904 struct ldb_dn *prev_prim_group_dn, *new_prim_group_dn;
907 ldb = ldb_module_get_ctx(ac->module);
909 /* Fetch informations from the existing object */
911 ret = ldb_search(ldb, ac, &res, ac->msg->dn, LDB_SCOPE_BASE, attrs,
913 if (ret != LDB_SUCCESS) {
917 /* Finds out the DN of the old primary group */
919 rid = samdb_result_uint(res->msgs[0], "primaryGroupID", (uint32_t) -1);
920 if (rid == (uint32_t) -1) {
921 /* User objects do always have a mandatory "primaryGroupID"
922 * attribute. If this doesn't exist then the object is of the
923 * wrong type. This is the exact Windows error code */
924 return LDB_ERR_OBJECT_CLASS_VIOLATION;
927 sid = dom_sid_add_rid(ac, samdb_domain_sid(ldb), rid);
929 return ldb_operr(ldb);
932 prev_prim_group_dn = samdb_search_dn(ldb, ac, NULL, "(objectSID=%s)",
933 dom_sid_string(ac, sid));
934 if (prev_prim_group_dn == NULL) {
935 return ldb_operr(ldb);
938 /* Finds out the DN of the new primary group */
940 rid = samdb_result_uint(ac->msg, "primaryGroupID", (uint32_t) -1);
941 if (rid == (uint32_t) -1) {
942 /* we aren't affected of any primary group change */
946 sid = dom_sid_add_rid(ac, samdb_domain_sid(ldb), rid);
948 return ldb_operr(ldb);
951 new_prim_group_dn = samdb_search_dn(ldb, ac, NULL, "(objectSID=%s)",
952 dom_sid_string(ac, sid));
953 if (new_prim_group_dn == NULL) {
954 /* Here we know if the specified new primary group candidate is
956 return LDB_ERR_UNWILLING_TO_PERFORM;
959 /* Only update the "member" attributes when we really do have a change */
960 if (ldb_dn_compare(new_prim_group_dn, prev_prim_group_dn) != 0) {
961 /* We need to be already a normal member of the new primary
962 * group in order to be successful. */
963 el = samdb_find_attribute(ldb, res->msgs[0], "memberOf",
964 ldb_dn_get_linearized(new_prim_group_dn));
966 return LDB_ERR_UNWILLING_TO_PERFORM;
969 /* Remove the "member" attribute on the new primary group */
970 msg = talloc_zero(ac, struct ldb_message);
971 msg->dn = new_prim_group_dn;
973 ret = samdb_msg_add_delval(ldb, ac, msg, "member",
974 ldb_dn_get_linearized(ac->msg->dn));
975 if (ret != LDB_SUCCESS) {
979 ret = dsdb_module_modify(ac->module, msg, DSDB_FLAG_NEXT_MODULE);
980 if (ret != LDB_SUCCESS) {
984 /* Add a "member" attribute for the previous primary group */
985 msg = talloc_zero(ac, struct ldb_message);
986 msg->dn = prev_prim_group_dn;
988 ret = samdb_msg_add_addval(ldb, ac, msg, "member",
989 ldb_dn_get_linearized(ac->msg->dn));
990 if (ret != LDB_SUCCESS) {
994 ret = dsdb_module_modify(ac->module, msg, DSDB_FLAG_NEXT_MODULE);
995 if (ret != LDB_SUCCESS) {
1004 static int samldb_member_check(struct samldb_ctx *ac)
1006 struct ldb_context *ldb;
1007 struct ldb_message_element *el;
1008 struct ldb_dn *member_dn, *group_dn;
1009 uint32_t prim_group_rid;
1010 struct dom_sid *sid;
1013 ldb = ldb_module_get_ctx(ac->module);
1015 el = ldb_msg_find_element(ac->msg, "member");
1017 /* we aren't affected */
1021 for (i = 0; i < el->num_values; i++) {
1022 /* Denies to add "member"s to groups which are primary ones
1024 member_dn = ldb_dn_from_ldb_val(ac, ldb, &el->values[i]);
1025 if (!ldb_dn_validate(member_dn)) {
1026 return ldb_operr(ldb);
1029 prim_group_rid = samdb_search_uint(ldb, ac, (uint32_t) -1,
1030 member_dn, "primaryGroupID",
1032 if (prim_group_rid == (uint32_t) -1) {
1033 /* the member hasn't to be a user account -> therefore
1034 * no check needed in this case. */
1038 sid = dom_sid_add_rid(ac, samdb_domain_sid(ldb),
1041 return ldb_operr(ldb);
1044 group_dn = samdb_search_dn(ldb, ac, NULL, "(objectSID=%s)",
1045 dom_sid_string(ac, sid));
1046 if (group_dn == NULL) {
1047 return ldb_operr(ldb);
1050 if (ldb_dn_compare(group_dn, ac->msg->dn) == 0) {
1051 return LDB_ERR_ENTRY_ALREADY_EXISTS;
1060 static int samldb_add(struct ldb_module *module, struct ldb_request *req)
1062 struct ldb_context *ldb;
1063 struct samldb_ctx *ac;
1066 ldb = ldb_module_get_ctx(module);
1067 ldb_debug(ldb, LDB_DEBUG_TRACE, "samldb_add\n");
1069 /* do not manipulate our control entries */
1070 if (ldb_dn_is_special(req->op.add.message->dn)) {
1071 return ldb_next_request(module, req);
1074 ac = samldb_ctx_init(module, req);
1076 return ldb_operr(ldb);
1079 /* build the new msg */
1080 req->op.add.message = ac->msg = ldb_msg_copy_shallow(req,
1081 req->op.add.message);
1082 if (ac->msg == NULL) {
1083 return ldb_operr(ldb);
1086 if (samdb_find_attribute(ldb, ac->msg,
1087 "objectclass", "user") != NULL) {
1088 return samldb_fill_object(ac, "user");
1091 if (samdb_find_attribute(ldb, ac->msg,
1092 "objectclass", "group") != NULL) {
1093 return samldb_fill_object(ac, "group");
1096 /* perhaps a foreignSecurityPrincipal? */
1097 if (samdb_find_attribute(ldb, ac->msg,
1099 "foreignSecurityPrincipal") != NULL) {
1100 return samldb_fill_foreignSecurityPrincipal_object(ac);
1103 if (samdb_find_attribute(ldb, ac->msg,
1104 "objectclass", "classSchema") != NULL) {
1105 ret = samldb_schema_info_update(ac);
1106 if (ret != LDB_SUCCESS) {
1111 return samldb_fill_object(ac, "classSchema");
1114 if (samdb_find_attribute(ldb, ac->msg,
1115 "objectclass", "attributeSchema") != NULL) {
1116 ret = samldb_schema_info_update(ac);
1117 if (ret != LDB_SUCCESS) {
1122 return samldb_fill_object(ac, "attributeSchema");
1127 /* nothing matched, go on */
1128 return ldb_next_request(module, req);
1132 static int samldb_modify(struct ldb_module *module, struct ldb_request *req)
1134 struct ldb_context *ldb;
1135 struct samldb_ctx *ac;
1136 struct ldb_message_element *el, *el2;
1138 uint32_t account_type;
1140 if (ldb_dn_is_special(req->op.mod.message->dn)) {
1141 /* do not manipulate our control entries */
1142 return ldb_next_request(module, req);
1145 ldb = ldb_module_get_ctx(module);
1147 if (ldb_msg_find_element(req->op.mod.message, "sAMAccountType") != NULL) {
1148 ldb_asprintf_errstring(ldb,
1149 "sAMAccountType must not be specified!");
1150 return LDB_ERR_UNWILLING_TO_PERFORM;
1153 /* msDS-IntId is not allowed to be modified
1154 * except when modification comes from replication */
1155 if (ldb_msg_find_element(req->op.mod.message, "msDS-IntId")) {
1156 if (!ldb_request_get_control(req, DSDB_CONTROL_REPLICATED_UPDATE_OID)) {
1157 return LDB_ERR_CONSTRAINT_VIOLATION;
1161 ac = samldb_ctx_init(module, req);
1163 return ldb_operr(ldb);
1166 /* build the new msg */
1167 req->op.mod.message = ac->msg = ldb_msg_copy_shallow(req,
1168 req->op.mod.message);
1169 if (ac->msg == NULL) {
1170 return ldb_operr(ldb);
1173 el = ldb_msg_find_element(ac->msg, "groupType");
1174 if (el && (LDB_FLAG_MOD_TYPE(el->flags) == LDB_FLAG_MOD_REPLACE) && el->num_values == 1) {
1175 uint32_t group_type;
1177 group_type = strtoul((const char *)el->values[0].data, NULL, 0);
1178 account_type = ds_gtype2atype(group_type);
1179 ret = samdb_msg_add_uint(ldb, ac->msg, ac->msg,
1182 if (ret != LDB_SUCCESS) {
1185 el2 = ldb_msg_find_element(ac->msg, "sAMAccountType");
1186 el2->flags = LDB_FLAG_MOD_REPLACE;
1188 if (el && (LDB_FLAG_MOD_TYPE(el->flags) == LDB_FLAG_MOD_DELETE)) {
1189 return LDB_ERR_UNWILLING_TO_PERFORM;
1192 el = ldb_msg_find_element(ac->msg, "primaryGroupID");
1193 if (el && (LDB_FLAG_MOD_TYPE(el->flags) == LDB_FLAG_MOD_REPLACE) && el->num_values == 1) {
1194 ret = samldb_prim_group_change(ac);
1195 if (ret != LDB_SUCCESS) {
1199 if (el && (LDB_FLAG_MOD_TYPE(el->flags) == LDB_FLAG_MOD_DELETE)) {
1200 return LDB_ERR_UNWILLING_TO_PERFORM;
1203 el = ldb_msg_find_element(ac->msg, "userAccountControl");
1204 if (el && (LDB_FLAG_MOD_TYPE(el->flags) == LDB_FLAG_MOD_REPLACE) && el->num_values == 1) {
1205 uint32_t user_account_control;
1207 user_account_control = strtoul((const char *)el->values[0].data,
1209 account_type = ds_uf2atype(user_account_control);
1210 ret = samdb_msg_add_uint(ldb, ac->msg, ac->msg,
1213 if (ret != LDB_SUCCESS) {
1216 el2 = ldb_msg_find_element(ac->msg, "sAMAccountType");
1217 el2->flags = LDB_FLAG_MOD_REPLACE;
1219 if (user_account_control & (UF_SERVER_TRUST_ACCOUNT | UF_PARTIAL_SECRETS_ACCOUNT)) {
1220 ret = samdb_msg_add_string(ldb, ac->msg, ac->msg,
1221 "isCriticalSystemObject",
1223 if (ret != LDB_SUCCESS) {
1226 el2 = ldb_msg_find_element(ac->msg,
1227 "isCriticalSystemObject");
1228 el2->flags = LDB_FLAG_MOD_REPLACE;
1230 /* DCs have primaryGroupID of DOMAIN_RID_DCS */
1231 if (!ldb_msg_find_element(ac->msg, "primaryGroupID")) {
1233 if (user_account_control & UF_SERVER_TRUST_ACCOUNT) {
1234 rid = DOMAIN_RID_DCS;
1237 rid = DOMAIN_RID_READONLY_DCS;
1239 ret = samdb_msg_add_uint(ldb, ac->msg, ac->msg,
1240 "primaryGroupID", rid);
1241 if (ret != LDB_SUCCESS) {
1244 el2 = ldb_msg_find_element(ac->msg,
1246 el2->flags = LDB_FLAG_MOD_REPLACE;
1250 if (el && (LDB_FLAG_MOD_TYPE(el->flags) == LDB_FLAG_MOD_DELETE)) {
1251 return LDB_ERR_UNWILLING_TO_PERFORM;
1254 el = ldb_msg_find_element(ac->msg, "member");
1255 if (el && el->flags & (LDB_FLAG_MOD_ADD|LDB_FLAG_MOD_REPLACE) && el->num_values == 1) {
1256 ret = samldb_member_check(ac);
1257 if (ret != LDB_SUCCESS) {
1264 return ldb_next_request(module, req);
1269 static int samldb_prim_group_users_check(struct samldb_ctx *ac)
1271 struct ldb_context *ldb;
1272 struct dom_sid *sid;
1277 ldb = ldb_module_get_ctx(ac->module);
1279 /* Finds out the SID/RID of the SAM object */
1280 sid = samdb_search_dom_sid(ldb, ac, ac->req->op.del.dn, "objectSID",
1283 /* No SID - it might not be a SAM object - therefore ok */
1286 status = dom_sid_split_rid(ac, sid, NULL, &rid);
1287 if (!NT_STATUS_IS_OK(status)) {
1288 return ldb_operr(ldb);
1291 /* Special object (security principal?) */
1295 /* Deny delete requests from groups which are primary ones */
1296 count = samdb_search_count(ldb, NULL,
1297 "(&(primaryGroupID=%u)(objectClass=user))",
1300 return ldb_operr(ldb);
1303 return LDB_ERR_ENTRY_ALREADY_EXISTS;
1309 static int samldb_delete(struct ldb_module *module, struct ldb_request *req)
1311 struct samldb_ctx *ac;
1314 if (ldb_dn_is_special(req->op.del.dn)) {
1315 /* do not manipulate our control entries */
1316 return ldb_next_request(module, req);
1319 ac = samldb_ctx_init(module, req);
1321 return ldb_operr(ldb_module_get_ctx(module));
1324 ret = samldb_prim_group_users_check(ac);
1325 if (ret != LDB_SUCCESS) {
1331 return ldb_next_request(module, req);
1336 static int samldb_extended_allocate_rid_pool(struct ldb_module *module, struct ldb_request *req)
1338 struct ldb_context *ldb = ldb_module_get_ctx(module);
1339 struct dsdb_fsmo_extended_op *exop;
1342 exop = talloc_get_type(req->op.extended.data, struct dsdb_fsmo_extended_op);
1344 ldb_debug(ldb, LDB_DEBUG_FATAL, "samldb_extended_allocate_rid_pool: invalid extended data\n");
1345 return LDB_ERR_PROTOCOL_ERROR;
1348 ret = ridalloc_allocate_rid_pool_fsmo(module, exop);
1349 if (ret != LDB_SUCCESS) {
1353 return ldb_module_done(req, NULL, NULL, LDB_SUCCESS);
1356 static int samldb_extended(struct ldb_module *module, struct ldb_request *req)
1358 if (strcmp(req->op.extended.oid, DSDB_EXTENDED_ALLOCATE_RID_POOL) == 0) {
1359 return samldb_extended_allocate_rid_pool(module, req);
1362 return ldb_next_request(module, req);
1366 _PUBLIC_ const struct ldb_module_ops ldb_samldb_module_ops = {
1369 .modify = samldb_modify,
1370 .del = samldb_delete,
1371 .extended = samldb_extended