2 Unix SMB/CIFS implementation.
4 implement the DRSUpdateRefs call
6 Copyright (C) Anatoliy Atanasov 2009
7 Copyright (C) Andrew Tridgell 2009
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>.
24 #include "rpc_server/dcerpc_server.h"
25 #include "dsdb/samdb/samdb.h"
26 #include "param/param.h"
27 #include "librpc/gen_ndr/ndr_drsblobs.h"
28 #include "librpc/gen_ndr/ndr_drsuapi.h"
29 #include "rpc_server/drsuapi/dcesrv_drsuapi.h"
30 #include "rpc_server/dcerpc_server_proto.h"
31 #include "../libcli/drsuapi/drsuapi.h"
32 #include "libcli/security/security.h"
33 #include "lib/util/binsearch.h"
34 #include "lib/util/tsort.h"
35 #include "auth/session.h"
38 build a DsReplicaObjectIdentifier from a ldb msg
40 static struct drsuapi_DsReplicaObjectIdentifier *get_object_identifier(TALLOC_CTX *mem_ctx,
41 struct ldb_message *msg)
43 struct drsuapi_DsReplicaObjectIdentifier *identifier;
46 identifier = talloc(mem_ctx, struct drsuapi_DsReplicaObjectIdentifier);
47 if (identifier == NULL) {
51 identifier->dn = ldb_dn_alloc_linearized(identifier, msg->dn);
52 identifier->guid = samdb_result_guid(msg, "objectGUID");
54 sid = samdb_result_dom_sid(identifier, msg, "objectSid");
56 identifier->sid = *sid;
58 ZERO_STRUCT(identifier->sid);
63 static int udv_compare(const struct GUID *guid1, struct GUID guid2)
65 return GUID_compare(guid1, &guid2);
69 see if we can filter an attribute using the uptodateness_vector
71 static bool udv_filter(const struct drsuapi_DsReplicaCursorCtrEx *udv,
72 const struct GUID *originating_invocation_id,
73 uint64_t originating_usn)
75 const struct drsuapi_DsReplicaCursor *c;
76 if (udv == NULL) return false;
77 BINARY_ARRAY_SEARCH(udv->cursors, udv->count, source_dsa_invocation_id,
78 originating_invocation_id, udv_compare, c);
79 if (c && originating_usn <= c->highest_usn) {
87 drsuapi_DsGetNCChanges for one object
89 static WERROR get_nc_changes_build_object(struct drsuapi_DsReplicaObjectListItemEx *obj,
90 struct ldb_message *msg,
91 struct ldb_context *sam_ctx,
92 struct ldb_dn *ncRoot_dn,
93 struct dsdb_schema *schema,
94 DATA_BLOB *session_key,
96 uint32_t replica_flags,
97 struct drsuapi_DsReplicaCursorCtrEx *uptodateness_vector)
99 const struct ldb_val *md_value;
101 struct replPropertyMetaDataBlob md;
103 enum ndr_err_code ndr_err;
106 const struct dsdb_attribute *rdn_sa;
107 unsigned int instanceType;
109 instanceType = ldb_msg_find_attr_as_uint(msg, "instanceType", 0);
110 if (instanceType & INSTANCE_TYPE_IS_NC_HEAD) {
111 obj->is_nc_prefix = true;
112 obj->parent_object_guid = NULL;
114 obj->is_nc_prefix = false;
115 obj->parent_object_guid = talloc(obj, struct GUID);
116 if (obj->parent_object_guid == NULL) {
117 return WERR_DS_DRA_INTERNAL_ERROR;
119 *obj->parent_object_guid = samdb_result_guid(msg, "parentGUID");
120 if (GUID_all_zero(obj->parent_object_guid)) {
121 DEBUG(0,(__location__ ": missing parentGUID for %s\n",
122 ldb_dn_get_linearized(msg->dn)));
123 return WERR_DS_DRA_INTERNAL_ERROR;
126 obj->next_object = NULL;
128 md_value = ldb_msg_find_ldb_val(msg, "replPropertyMetaData");
130 /* nothing to send */
134 if (instanceType & INSTANCE_TYPE_UNINSTANT) {
135 /* don't send uninstantiated objects */
139 ndr_err = ndr_pull_struct_blob(md_value, obj, &md,
140 (ndr_pull_flags_fn_t)ndr_pull_replPropertyMetaDataBlob);
141 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
142 return WERR_DS_DRA_INTERNAL_ERROR;
145 if (md.version != 1) {
146 return WERR_DS_DRA_INTERNAL_ERROR;
149 rdn = ldb_dn_get_rdn_name(msg->dn);
151 DEBUG(0,(__location__ ": No rDN for %s\n", ldb_dn_get_linearized(msg->dn)));
152 return WERR_DS_DRA_INTERNAL_ERROR;
155 rdn_sa = dsdb_attribute_by_lDAPDisplayName(schema, rdn);
156 if (rdn_sa == NULL) {
157 DEBUG(0,(__location__ ": Can't find dsds_attribute for rDN %s in %s\n",
158 rdn, ldb_dn_get_linearized(msg->dn)));
159 return WERR_DS_DRA_INTERNAL_ERROR;
162 obj->meta_data_ctr = talloc(obj, struct drsuapi_DsReplicaMetaDataCtr);
163 attids = talloc_array(obj, uint32_t, md.ctr.ctr1.count);
165 obj->object.identifier = get_object_identifier(obj, msg);
166 if (obj->object.identifier == NULL) {
169 dom_sid_split_rid(NULL, &obj->object.identifier->sid, NULL, &rid);
171 obj->meta_data_ctr->meta_data = talloc_array(obj, struct drsuapi_DsReplicaMetaData, md.ctr.ctr1.count);
172 for (n=i=0; i<md.ctr.ctr1.count; i++) {
173 const struct dsdb_attribute *sa;
174 /* if the attribute has not changed, and it is not the
175 instanceType then don't include it */
176 if (md.ctr.ctr1.array[i].local_usn < highest_usn &&
177 md.ctr.ctr1.array[i].attid != DRSUAPI_ATTRIBUTE_instanceType) continue;
179 /* don't include the rDN */
180 if (md.ctr.ctr1.array[i].attid == rdn_sa->attributeID_id) continue;
182 sa = dsdb_attribute_by_attributeID_id(schema, md.ctr.ctr1.array[i].attid);
184 DEBUG(0,(__location__ ": Failed to find attribute in schema for attrid %u mentioned in replPropertyMetaData of %s\n",
185 (unsigned int)md.ctr.ctr1.array[i].attid,
186 ldb_dn_get_linearized(msg->dn)));
187 return WERR_DS_DRA_INTERNAL_ERROR;
191 struct ldb_message_element *el;
192 el = ldb_msg_find_element(msg, sa->lDAPDisplayName);
193 if (el && el->num_values && dsdb_dn_is_upgraded_link_val(&el->values[0])) {
194 /* don't send upgraded links inline */
199 /* filter by uptodateness_vector */
200 if (md.ctr.ctr1.array[i].attid != DRSUAPI_ATTRIBUTE_instanceType &&
201 udv_filter(uptodateness_vector,
202 &md.ctr.ctr1.array[i].originating_invocation_id,
203 md.ctr.ctr1.array[i].originating_usn)) {
208 * If the recipient is a RODC, then we should not add any
209 * RODC filtered attribute
211 * TODO: This is not strictly correct, as it doesn't allow for administrators
212 * to setup some users to transfer passwords to specific RODCs. To support that
213 * we would instead remove this check and rely on extended ACL checking in the dsdb
216 if (dsdb_attr_in_rodc_fas(replica_flags, sa)) {
220 obj->meta_data_ctr->meta_data[n].originating_change_time = md.ctr.ctr1.array[i].originating_change_time;
221 obj->meta_data_ctr->meta_data[n].version = md.ctr.ctr1.array[i].version;
222 obj->meta_data_ctr->meta_data[n].originating_invocation_id = md.ctr.ctr1.array[i].originating_invocation_id;
223 obj->meta_data_ctr->meta_data[n].originating_usn = md.ctr.ctr1.array[i].originating_usn;
224 attids[n] = md.ctr.ctr1.array[i].attid;
228 /* ignore it if its an empty change. Note that renames always
229 * change the 'name' attribute, so they won't be ignored by
232 (n == 1 && attids[0] == DRSUAPI_ATTRIBUTE_instanceType)) {
233 talloc_free(obj->meta_data_ctr);
234 obj->meta_data_ctr = NULL;
238 obj->meta_data_ctr->count = n;
240 obj->object.flags = DRSUAPI_DS_REPLICA_OBJECT_FROM_MASTER;
241 obj->object.attribute_ctr.num_attributes = obj->meta_data_ctr->count;
242 obj->object.attribute_ctr.attributes = talloc_array(obj, struct drsuapi_DsReplicaAttribute,
243 obj->object.attribute_ctr.num_attributes);
246 * Note that the meta_data array and the attributes array must
247 * be the same size and in the same order
249 for (i=0; i<obj->object.attribute_ctr.num_attributes; i++) {
250 struct ldb_message_element *el;
252 const struct dsdb_attribute *sa;
254 sa = dsdb_attribute_by_attributeID_id(schema, attids[i]);
256 DEBUG(0,("Unable to find attributeID %u in schema\n", attids[i]));
257 return WERR_DS_DRA_INTERNAL_ERROR;
260 el = ldb_msg_find_element(msg, sa->lDAPDisplayName);
262 /* this happens for attributes that have been removed */
263 DEBUG(5,("No element '%s' for attributeID %u in message\n",
264 sa->lDAPDisplayName, attids[i]));
265 ZERO_STRUCT(obj->object.attribute_ctr.attributes[i]);
266 obj->object.attribute_ctr.attributes[i].attid = attids[i];
268 werr = dsdb_attribute_ldb_to_drsuapi(sam_ctx, schema, el, obj,
269 &obj->object.attribute_ctr.attributes[i]);
270 if (!W_ERROR_IS_OK(werr)) {
271 DEBUG(0,("Unable to convert %s to DRS object - %s\n",
272 sa->lDAPDisplayName, win_errstr(werr)));
275 /* if DRSUAPI_DRS_SPECIAL_SECRET_PROCESSING is set
276 * check if attribute is secret and send a null value
278 if (replica_flags & DRSUAPI_DRS_SPECIAL_SECRET_PROCESSING) {
279 drsuapi_process_secret_attribute(&obj->object.attribute_ctr.attributes[i],
280 &obj->meta_data_ctr->meta_data[i]);
282 /* some attributes needs to be encrypted
284 werr = drsuapi_encrypt_attribute(obj, session_key, rid,
285 &obj->object.attribute_ctr.attributes[i]);
286 if (!W_ERROR_IS_OK(werr)) {
287 DEBUG(0,("Unable to encrypt %s in DRS object - %s\n",
288 sa->lDAPDisplayName, win_errstr(werr)));
299 add one linked attribute from an object to the list of linked
300 attributes in a getncchanges request
302 static WERROR get_nc_changes_add_la(TALLOC_CTX *mem_ctx,
303 struct ldb_context *sam_ctx,
304 const struct dsdb_schema *schema,
305 const struct dsdb_attribute *sa,
306 struct ldb_message *msg,
307 struct dsdb_dn *dsdb_dn,
308 struct drsuapi_DsReplicaLinkedAttribute **la_list,
311 struct drsuapi_DsReplicaLinkedAttribute *la;
316 (*la_list) = talloc_realloc(mem_ctx, *la_list, struct drsuapi_DsReplicaLinkedAttribute, (*la_count)+1);
317 W_ERROR_HAVE_NO_MEMORY(*la_list);
319 la = &(*la_list)[*la_count];
321 la->identifier = get_object_identifier(*la_list, msg);
322 W_ERROR_HAVE_NO_MEMORY(la->identifier);
324 active = (dsdb_dn_rmd_flags(dsdb_dn->dn) & DSDB_RMD_FLAG_DELETED) == 0;
326 la->attid = sa->attributeID_id;
327 la->flags = active?DRSUAPI_DS_LINKED_ATTRIBUTE_FLAG_ACTIVE:0;
329 status = dsdb_get_extended_dn_nttime(dsdb_dn->dn, &la->originating_add_time, "RMD_ADDTIME");
330 if (!NT_STATUS_IS_OK(status)) {
331 return ntstatus_to_werror(status);
333 status = dsdb_get_extended_dn_uint32(dsdb_dn->dn, &la->meta_data.version, "RMD_VERSION");
334 if (!NT_STATUS_IS_OK(status)) {
335 return ntstatus_to_werror(status);
337 status = dsdb_get_extended_dn_nttime(dsdb_dn->dn, &la->meta_data.originating_change_time, "RMD_CHANGETIME");
338 if (!NT_STATUS_IS_OK(status)) {
339 return ntstatus_to_werror(status);
341 status = dsdb_get_extended_dn_guid(dsdb_dn->dn, &la->meta_data.originating_invocation_id, "RMD_INVOCID");
342 if (!NT_STATUS_IS_OK(status)) {
343 return ntstatus_to_werror(status);
345 status = dsdb_get_extended_dn_uint64(dsdb_dn->dn, &la->meta_data.originating_usn, "RMD_ORIGINATING_USN");
346 if (!NT_STATUS_IS_OK(status)) {
347 return ntstatus_to_werror(status);
350 werr = dsdb_dn_la_to_blob(sam_ctx, sa, schema, *la_list, dsdb_dn, &la->value.blob);
351 W_ERROR_NOT_OK_RETURN(werr);
359 add linked attributes from an object to the list of linked
360 attributes in a getncchanges request
362 static WERROR get_nc_changes_add_links(struct ldb_context *sam_ctx,
364 struct ldb_dn *ncRoot_dn,
365 struct dsdb_schema *schema,
366 uint64_t highest_usn,
367 uint32_t replica_flags,
368 struct ldb_message *msg,
369 struct drsuapi_DsReplicaLinkedAttribute **la_list,
371 struct drsuapi_DsReplicaCursorCtrEx *uptodateness_vector)
374 TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
375 uint64_t uSNChanged = ldb_msg_find_attr_as_int(msg, "uSNChanged", -1);
377 for (i=0; i<msg->num_elements; i++) {
378 struct ldb_message_element *el = &msg->elements[i];
379 const struct dsdb_attribute *sa;
382 sa = dsdb_attribute_by_lDAPDisplayName(schema, el->name);
384 if (!sa || sa->linkID == 0 || (sa->linkID & 1)) {
385 /* we only want forward links */
389 if (el->num_values && !dsdb_dn_is_upgraded_link_val(&el->values[0])) {
390 /* its an old style link, it will have been
391 * sent in the main replication data */
395 for (j=0; j<el->num_values; j++) {
396 struct dsdb_dn *dsdb_dn;
401 dsdb_dn = dsdb_dn_parse(tmp_ctx, sam_ctx, &el->values[j], sa->syntax->ldap_oid);
402 if (dsdb_dn == NULL) {
403 DEBUG(1,(__location__ ": Failed to parse DN for %s in %s\n",
404 el->name, ldb_dn_get_linearized(msg->dn)));
405 talloc_free(tmp_ctx);
406 return WERR_DS_DRA_INTERNAL_ERROR;
409 status = dsdb_get_extended_dn_uint64(dsdb_dn->dn, &local_usn, "RMD_LOCAL_USN");
410 if (!NT_STATUS_IS_OK(status)) {
411 /* this can happen for attributes
412 given to us with old style meta
417 if (local_usn > uSNChanged) {
418 DEBUG(1,(__location__ ": uSNChanged less than RMD_LOCAL_USN for %s on %s\n",
419 el->name, ldb_dn_get_linearized(msg->dn)));
420 talloc_free(tmp_ctx);
421 return WERR_DS_DRA_INTERNAL_ERROR;
424 if (local_usn < highest_usn) {
428 werr = get_nc_changes_add_la(mem_ctx, sam_ctx, schema, sa, msg,
429 dsdb_dn, la_list, la_count);
430 if (!W_ERROR_IS_OK(werr)) {
431 talloc_free(tmp_ctx);
437 talloc_free(tmp_ctx);
442 fill in the cursors return based on the replUpToDateVector for the ncRoot_dn
444 static WERROR get_nc_changes_udv(struct ldb_context *sam_ctx,
445 struct ldb_dn *ncRoot_dn,
446 struct drsuapi_DsReplicaCursor2CtrEx *udv)
454 ret = dsdb_load_udv_v2(sam_ctx, ncRoot_dn, udv, &udv->cursors, &udv->count);
455 if (ret != LDB_SUCCESS) {
456 DEBUG(0,(__location__ ": Failed to load UDV for %s - %s\n",
457 ldb_dn_get_linearized(ncRoot_dn), ldb_errstring(sam_ctx)));
458 return WERR_DS_DRA_INTERNAL_ERROR;
465 /* comparison function for linked attributes - see CompareLinks() in
466 * MS-DRSR section 4.1.10.5.17 */
467 static int linked_attribute_compare(const struct drsuapi_DsReplicaLinkedAttribute *la1,
468 const struct drsuapi_DsReplicaLinkedAttribute *la2,
469 struct ldb_context *sam_ctx)
474 const struct dsdb_schema *schema;
475 const struct dsdb_attribute *schema_attrib;
476 struct dsdb_dn *dn1, *dn2;
477 struct GUID guid1, guid2;
480 c = GUID_compare(&la1->identifier->guid,
481 &la2->identifier->guid);
482 if (c != 0) return c;
484 if (la1->attid != la2->attid) {
485 return la1->attid < la2->attid? -1:1;
488 if ((la1->flags & DRSUAPI_DS_LINKED_ATTRIBUTE_FLAG_ACTIVE) !=
489 (la2->flags & DRSUAPI_DS_LINKED_ATTRIBUTE_FLAG_ACTIVE)) {
490 return (la1->flags & DRSUAPI_DS_LINKED_ATTRIBUTE_FLAG_ACTIVE)? 1:-1;
493 /* we need to get the target GUIDs to compare */
494 tmp_ctx = talloc_new(sam_ctx);
496 schema = dsdb_get_schema(sam_ctx, tmp_ctx);
497 schema_attrib = dsdb_attribute_by_attributeID_id(schema, la1->attid);
499 werr = dsdb_dn_la_from_blob(sam_ctx, schema_attrib, schema, tmp_ctx, la1->value.blob, &dn1);
500 if (!W_ERROR_IS_OK(werr)) {
501 DEBUG(0,(__location__ ": Bad la1 blob in sort\n"));
502 talloc_free(tmp_ctx);
506 werr = dsdb_dn_la_from_blob(sam_ctx, schema_attrib, schema, tmp_ctx, la2->value.blob, &dn2);
507 if (!W_ERROR_IS_OK(werr)) {
508 DEBUG(0,(__location__ ": Bad la2 blob in sort\n"));
509 talloc_free(tmp_ctx);
513 status = dsdb_get_extended_dn_guid(dn1->dn, &guid1, "GUID");
514 if (!NT_STATUS_IS_OK(status)) {
515 DEBUG(0,(__location__ ": Bad la1 guid in sort\n"));
516 talloc_free(tmp_ctx);
519 status = dsdb_get_extended_dn_guid(dn2->dn, &guid2, "GUID");
520 if (!NT_STATUS_IS_OK(status)) {
521 DEBUG(0,(__location__ ": Bad la2 guid in sort\n"));
522 talloc_free(tmp_ctx);
526 talloc_free(tmp_ctx);
528 return GUID_compare(&guid1, &guid2);
533 sort the objects we send by tree order
535 static int site_res_cmp_parent_order(struct ldb_message **m1, struct ldb_message **m2)
537 return ldb_dn_compare((*m2)->dn, (*m1)->dn);
541 sort the objects we send first by uSNChanged
543 static int site_res_cmp_usn_order(struct ldb_message **m1, struct ldb_message **m2)
545 unsigned usnchanged1, usnchanged2;
547 cn1 = ldb_dn_get_comp_num((*m1)->dn);
548 cn2 = ldb_dn_get_comp_num((*m2)->dn);
550 return cn1 > cn2 ? 1 : -1;
552 usnchanged1 = ldb_msg_find_attr_as_uint(*m1, "uSNChanged", 0);
553 usnchanged2 = ldb_msg_find_attr_as_uint(*m2, "uSNChanged", 0);
554 if (usnchanged1 == usnchanged2) {
557 return usnchanged1 > usnchanged2 ? 1 : -1;
562 handle a DRSUAPI_EXOP_FSMO_RID_ALLOC call
564 static WERROR getncchanges_rid_alloc(struct drsuapi_bind_state *b_state,
566 struct drsuapi_DsGetNCChangesRequest8 *req8,
567 struct drsuapi_DsGetNCChangesCtr6 *ctr6)
569 struct ldb_dn *rid_manager_dn, *fsmo_role_dn, *req_dn;
571 struct ldb_context *ldb = b_state->sam_ctx;
572 struct ldb_result *ext_res;
573 struct ldb_dn *base_dn;
574 struct dsdb_fsmo_extended_op *exop;
578 - verify that the DN being asked for is the RID Manager DN
579 - verify that we are the RID Manager
582 /* work out who is the RID Manager */
583 ret = samdb_rid_manager_dn(ldb, mem_ctx, &rid_manager_dn);
584 if (ret != LDB_SUCCESS) {
585 DEBUG(0, (__location__ ": Failed to find RID Manager object - %s\n", ldb_errstring(ldb)));
586 return WERR_DS_DRA_INTERNAL_ERROR;
589 req_dn = ldb_dn_new(mem_ctx, ldb, req8->naming_context->dn);
591 !ldb_dn_validate(req_dn) ||
592 ldb_dn_compare(req_dn, rid_manager_dn) != 0) {
593 /* that isn't the RID Manager DN */
594 DEBUG(0,(__location__ ": RID Alloc request for wrong DN %s\n",
595 req8->naming_context->dn));
596 ctr6->extended_ret = DRSUAPI_EXOP_ERR_MISMATCH;
600 /* find the DN of the RID Manager */
601 ret = samdb_reference_dn(ldb, mem_ctx, rid_manager_dn, "fSMORoleOwner", &fsmo_role_dn);
602 if (ret != LDB_SUCCESS) {
603 DEBUG(0,(__location__ ": Failed to find fSMORoleOwner in RID Manager object - %s\n",
604 ldb_errstring(ldb)));
605 ctr6->extended_ret = DRSUAPI_EXOP_ERR_FSMO_NOT_OWNER;
606 return WERR_DS_DRA_INTERNAL_ERROR;
609 if (ldb_dn_compare(samdb_ntds_settings_dn(ldb), fsmo_role_dn) != 0) {
610 /* we're not the RID Manager - go away */
611 DEBUG(0,(__location__ ": RID Alloc request when not RID Manager\n"));
612 ctr6->extended_ret = DRSUAPI_EXOP_ERR_FSMO_NOT_OWNER;
616 exop = talloc(mem_ctx, struct dsdb_fsmo_extended_op);
617 W_ERROR_HAVE_NO_MEMORY(exop);
619 exop->fsmo_info = req8->fsmo_info;
620 exop->destination_dsa_guid = req8->destination_dsa_guid;
622 ret = ldb_transaction_start(ldb);
623 if (ret != LDB_SUCCESS) {
624 DEBUG(0,(__location__ ": Failed transaction start - %s\n",
625 ldb_errstring(ldb)));
626 return WERR_DS_DRA_INTERNAL_ERROR;
629 ret = ldb_extended(ldb, DSDB_EXTENDED_ALLOCATE_RID_POOL, exop, &ext_res);
630 if (ret != LDB_SUCCESS) {
631 DEBUG(0,(__location__ ": Failed extended allocation RID pool operation - %s\n",
632 ldb_errstring(ldb)));
633 ldb_transaction_cancel(ldb);
634 return WERR_DS_DRA_INTERNAL_ERROR;
637 ret = ldb_transaction_commit(ldb);
638 if (ret != LDB_SUCCESS) {
639 DEBUG(0,(__location__ ": Failed transaction commit - %s\n",
640 ldb_errstring(ldb)));
641 return WERR_DS_DRA_INTERNAL_ERROR;
644 talloc_free(ext_res);
646 base_dn = ldb_get_default_basedn(ldb);
648 DEBUG(2,("Allocated RID pool for server %s\n",
649 GUID_string(mem_ctx, &req8->destination_dsa_guid)));
651 ctr6->extended_ret = DRSUAPI_EXOP_ERR_SUCCESS;
658 /* state of a partially completed getncchanges call */
659 struct drsuapi_getncchanges_state {
660 struct ldb_result *site_res;
662 struct ldb_dn *ncRoot_dn;
664 uint64_t highest_usn;
665 struct ldb_dn *last_dn;
666 struct drsuapi_DsReplicaLinkedAttribute *la_list;
668 struct drsuapi_DsReplicaCursorCtrEx *uptodateness_vector;
672 drsuapi_DsGetNCChanges
674 see MS-DRSR 4.1.10.5.2 for basic logic of this function
676 WERROR dcesrv_drsuapi_DsGetNCChanges(struct dcesrv_call_state *dce_call, TALLOC_CTX *mem_ctx,
677 struct drsuapi_DsGetNCChanges *r)
679 struct drsuapi_DsReplicaObjectIdentifier *ncRoot;
682 struct dsdb_schema *schema;
683 struct drsuapi_DsReplicaOIDMapping_Ctr *ctr;
684 struct drsuapi_DsReplicaObjectListItemEx **currentObject;
686 DATA_BLOB session_key;
687 const char *attrs[] = { "*", "distinguishedName",
688 "nTSecurityDescriptor",
690 "replPropertyMetaData",
695 "supplementalCredentials",
698 struct dcesrv_handle *h;
699 struct drsuapi_bind_state *b_state;
700 struct drsuapi_getncchanges_state *getnc_state;
701 struct drsuapi_DsGetNCChangesRequest8 *req8;
703 uint32_t max_objects;
704 struct ldb_dn *search_dn = NULL;
706 enum security_user_level security_level;
708 DCESRV_PULL_HANDLE_WERR(h, r->in.bind_handle, DRSUAPI_BIND_HANDLE);
711 *r->out.level_out = 6;
712 /* TODO: linked attributes*/
713 r->out.ctr->ctr6.linked_attributes_count = 0;
714 r->out.ctr->ctr6.linked_attributes = NULL;
716 r->out.ctr->ctr6.object_count = 0;
717 r->out.ctr->ctr6.nc_object_count = 0;
718 r->out.ctr->ctr6.more_data = false;
719 r->out.ctr->ctr6.uptodateness_vector = NULL;
721 /* a RODC doesn't allow for any replication */
722 ret = samdb_rodc(b_state->sam_ctx, &am_rodc);
723 if (ret == LDB_SUCCESS && am_rodc) {
724 DEBUG(0,(__location__ ": DsGetNCChanges attempt on RODC\n"));
725 return WERR_DS_DRA_SOURCE_DISABLED;
728 /* Check request revision.
729 TODO: Adding mappings to req8 from the other levels
731 if (r->in.level != 8) {
732 DEBUG(0,(__location__ ": Request for DsGetNCChanges with unsupported level %u\n",
734 return WERR_REVISION_MISMATCH;
737 req8 = &r->in.req->req8;
739 /* Perform access checks. */
740 /* TODO: we need to support a sync on a specific non-root
741 * DN. We'll need to find the real partition root here */
742 ncRoot = req8->naming_context;
743 if (ncRoot == NULL) {
744 DEBUG(0,(__location__ ": Request for DsGetNCChanges with no NC\n"));
745 return WERR_DS_DRA_INVALID_PARAMETER;
748 if (samdb_ntds_options(b_state->sam_ctx, &options) != LDB_SUCCESS) {
749 return WERR_DS_DRA_INTERNAL_ERROR;
752 if ((options & DS_NTDSDSA_OPT_DISABLE_OUTBOUND_REPL) &&
753 !(req8->replica_flags & DRSUAPI_DRS_SYNC_FORCED)) {
754 return WERR_DS_DRA_SOURCE_DISABLED;
757 werr = drs_security_level_check(dce_call, "DsGetNCChanges", SECURITY_RO_DOMAIN_CONTROLLER);
758 if (!W_ERROR_IS_OK(werr)) {
762 /* for non-administrator replications, check that they have
763 given the correct source_dsa_invocation_id */
764 security_level = security_session_user_level(dce_call->conn->auth_state.session_info,
765 samdb_domain_sid(b_state->sam_ctx));
766 if (security_level == SECURITY_RO_DOMAIN_CONTROLLER &&
767 (req8->replica_flags & DRSUAPI_DRS_WRIT_REP)) {
768 DEBUG(0,(__location__ ": Attempt to do writeable replication by RODC %s\n",
769 dom_sid_string(mem_ctx,
770 dce_call->conn->auth_state.session_info->security_token->user_sid)));
771 return WERR_DS_DRA_INVALID_PARAMETER;
775 if (req8->replica_flags & DRSUAPI_DRS_FULL_SYNC_PACKET) {
776 /* Ignore the _in_ uptpdateness vector*/
777 req8->uptodateness_vector = NULL;
780 /* we don't yet support extended operations */
781 switch (req8->extended_op) {
782 case DRSUAPI_EXOP_NONE:
785 case DRSUAPI_EXOP_FSMO_RID_ALLOC:
786 werr = getncchanges_rid_alloc(b_state, mem_ctx, req8, &r->out.ctr->ctr6);
787 W_ERROR_NOT_OK_RETURN(werr);
788 search_dn = ldb_get_default_basedn(b_state->sam_ctx);
791 case DRSUAPI_EXOP_FSMO_REQ_ROLE:
792 case DRSUAPI_EXOP_FSMO_RID_REQ_ROLE:
793 case DRSUAPI_EXOP_FSMO_REQ_PDC:
794 case DRSUAPI_EXOP_FSMO_ABANDON_ROLE:
795 case DRSUAPI_EXOP_REPL_OBJ:
796 case DRSUAPI_EXOP_REPL_SECRET:
797 DEBUG(0,(__location__ ": Request for DsGetNCChanges unsupported extended op 0x%x\n",
798 (unsigned)req8->extended_op));
799 return WERR_DS_DRA_NOT_SUPPORTED;
802 getnc_state = b_state->getncchanges_state;
804 /* see if a previous replication has been abandoned */
806 struct ldb_dn *new_dn = ldb_dn_new(getnc_state, b_state->sam_ctx, ncRoot->dn);
807 if (ldb_dn_compare(new_dn, getnc_state->ncRoot_dn) != 0) {
808 DEBUG(0,(__location__ ": DsGetNCChanges 2nd replication on different DN %s %s (last_dn %s)\n",
809 ldb_dn_get_linearized(new_dn),
810 ldb_dn_get_linearized(getnc_state->ncRoot_dn),
811 ldb_dn_get_linearized(getnc_state->last_dn)));
812 talloc_free(getnc_state);
817 if (getnc_state == NULL) {
818 getnc_state = talloc_zero(b_state, struct drsuapi_getncchanges_state);
819 if (getnc_state == NULL) {
822 b_state->getncchanges_state = getnc_state;
823 getnc_state->ncRoot_dn = ldb_dn_new(getnc_state, b_state->sam_ctx, ncRoot->dn);
826 if (!ldb_dn_validate(getnc_state->ncRoot_dn) ||
827 ldb_dn_is_null(getnc_state->ncRoot_dn)) {
828 DEBUG(0,(__location__ ": Bad DN '%s'\n", ncRoot->dn));
829 return WERR_DS_DRA_INVALID_PARAMETER;
832 /* we need the session key for encrypting password attributes */
833 status = dcesrv_inherited_session_key(dce_call->conn, &session_key);
834 if (!NT_STATUS_IS_OK(status)) {
835 DEBUG(0,(__location__ ": Failed to get session key\n"));
836 return WERR_DS_DRA_INTERNAL_ERROR;
840 TODO: MS-DRSR section 4.1.10.1.1
841 Work out if this is the start of a new cycle */
843 if (getnc_state->site_res == NULL) {
845 enum ldb_scope scope = LDB_SCOPE_SUBTREE;
846 const char *extra_filter;
848 extra_filter = lp_parm_string(dce_call->conn->dce_ctx->lp_ctx, NULL, "drs", "object filter");
850 getnc_state->min_usn = req8->highwatermark.highest_usn;
852 /* Construct response. */
853 search_filter = talloc_asprintf(mem_ctx,
854 "(uSNChanged>=%llu)",
855 (unsigned long long)(getnc_state->min_usn+1));
858 search_filter = talloc_asprintf(mem_ctx, "(&%s(%s))", search_filter, extra_filter);
861 if (req8->replica_flags & DRSUAPI_DRS_CRITICAL_ONLY) {
862 search_filter = talloc_asprintf(mem_ctx,
863 "(&%s(isCriticalSystemObject=TRUE))",
867 if (req8->replica_flags & DRSUAPI_DRS_ASYNC_REP) {
868 scope = LDB_SCOPE_BASE;
872 search_dn = getnc_state->ncRoot_dn;
875 DEBUG(1,(__location__ ": getncchanges on %s using filter %s\n",
876 ldb_dn_get_linearized(getnc_state->ncRoot_dn), search_filter));
877 ret = drsuapi_search_with_extended_dn(b_state->sam_ctx, getnc_state, &getnc_state->site_res,
878 search_dn, scope, attrs,
880 if (ret != LDB_SUCCESS) {
881 return WERR_DS_DRA_INTERNAL_ERROR;
884 if (req8->replica_flags & DRSUAPI_DRS_GET_ANC) {
885 TYPESAFE_QSORT(getnc_state->site_res->msgs,
886 getnc_state->site_res->count,
887 site_res_cmp_parent_order);
889 TYPESAFE_QSORT(getnc_state->site_res->msgs,
890 getnc_state->site_res->count,
891 site_res_cmp_usn_order);
894 getnc_state->uptodateness_vector = talloc_steal(getnc_state, req8->uptodateness_vector);
895 if (getnc_state->uptodateness_vector) {
896 /* make sure its sorted */
897 TYPESAFE_QSORT(getnc_state->uptodateness_vector->cursors,
898 getnc_state->uptodateness_vector->count,
899 drsuapi_DsReplicaCursor_compare);
904 schema = dsdb_get_schema(b_state->sam_ctx, mem_ctx);
906 DEBUG(0,("No schema in sam_ctx\n"));
907 return WERR_DS_DRA_INTERNAL_ERROR;
910 r->out.ctr->ctr6.naming_context = talloc(mem_ctx, struct drsuapi_DsReplicaObjectIdentifier);
911 *r->out.ctr->ctr6.naming_context = *ncRoot;
913 if (dsdb_find_guid_by_dn(b_state->sam_ctx, getnc_state->ncRoot_dn,
914 &r->out.ctr->ctr6.naming_context->guid) != LDB_SUCCESS) {
915 DEBUG(0,(__location__ ": Failed to find GUID of ncRoot_dn %s\n",
916 ldb_dn_get_linearized(getnc_state->ncRoot_dn)));
917 return WERR_DS_DRA_INTERNAL_ERROR;
920 /* find the SID if there is one */
921 dsdb_find_sid_by_dn(b_state->sam_ctx, getnc_state->ncRoot_dn, &r->out.ctr->ctr6.naming_context->sid);
923 dsdb_get_oid_mappings_drsuapi(schema, true, mem_ctx, &ctr);
924 r->out.ctr->ctr6.mapping_ctr = *ctr;
926 r->out.ctr->ctr6.source_dsa_guid = *(samdb_ntds_objectGUID(b_state->sam_ctx));
927 r->out.ctr->ctr6.source_dsa_invocation_id = *(samdb_ntds_invocation_id(b_state->sam_ctx));
929 r->out.ctr->ctr6.old_highwatermark = req8->highwatermark;
930 r->out.ctr->ctr6.new_highwatermark = req8->highwatermark;
932 r->out.ctr->ctr6.first_object = NULL;
933 currentObject = &r->out.ctr->ctr6.first_object;
935 /* use this to force single objects at a time, which is useful
936 * for working out what object is giving problems
938 max_objects = lp_parm_int(dce_call->conn->dce_ctx->lp_ctx, NULL, "drs", "max object sync", 1000);
939 if (req8->max_object_count < max_objects) {
940 max_objects = req8->max_object_count;
943 for(i=getnc_state->num_sent;
944 i<getnc_state->site_res->count &&
945 (r->out.ctr->ctr6.object_count < max_objects);
948 struct drsuapi_DsReplicaObjectListItemEx *obj;
949 struct ldb_message *msg = getnc_state->site_res->msgs[i];
951 obj = talloc_zero(mem_ctx, struct drsuapi_DsReplicaObjectListItemEx);
953 werr = get_nc_changes_build_object(obj, msg,
954 b_state->sam_ctx, getnc_state->ncRoot_dn,
955 schema, &session_key, getnc_state->min_usn,
956 req8->replica_flags, getnc_state->uptodateness_vector);
957 if (!W_ERROR_IS_OK(werr)) {
961 werr = get_nc_changes_add_links(b_state->sam_ctx, getnc_state,
962 getnc_state->ncRoot_dn,
963 schema, getnc_state->min_usn,
966 &getnc_state->la_list,
967 &getnc_state->la_count,
968 getnc_state->uptodateness_vector);
969 if (!W_ERROR_IS_OK(werr)) {
973 uSN = ldb_msg_find_attr_as_int(msg, "uSNChanged", -1);
974 if (uSN > r->out.ctr->ctr6.new_highwatermark.tmp_highest_usn) {
975 r->out.ctr->ctr6.new_highwatermark.tmp_highest_usn = uSN;
977 if (uSN > getnc_state->highest_usn) {
978 getnc_state->highest_usn = uSN;
981 if (obj->meta_data_ctr == NULL) {
982 DEBUG(8,(__location__ ": getncchanges skipping send of object %s\n",
983 ldb_dn_get_linearized(msg->dn)));
984 /* no attributes to send */
989 r->out.ctr->ctr6.object_count++;
991 *currentObject = obj;
992 currentObject = &obj->next_object;
994 talloc_free(getnc_state->last_dn);
995 getnc_state->last_dn = ldb_dn_copy(getnc_state, msg->dn);
997 DEBUG(8,(__location__ ": replicating object %s\n", ldb_dn_get_linearized(msg->dn)));
1000 getnc_state->num_sent += r->out.ctr->ctr6.object_count;
1002 r->out.ctr->ctr6.nc_object_count = getnc_state->site_res->count;
1004 /* the client can us to call UpdateRefs on its behalf to
1005 re-establish monitoring of the NC */
1006 if ((req8->replica_flags & (DRSUAPI_DRS_ADD_REF | DRSUAPI_DRS_REF_GCSPN)) &&
1007 !GUID_all_zero(&req8->destination_dsa_guid)) {
1008 struct drsuapi_DsReplicaUpdateRefsRequest1 ureq;
1009 DEBUG(3,("UpdateRefs on getncchanges for %s\n",
1010 GUID_string(mem_ctx, &req8->destination_dsa_guid)));
1011 ureq.naming_context = ncRoot;
1012 ureq.dest_dsa_dns_name = talloc_asprintf(mem_ctx, "%s._msdcs.%s",
1013 GUID_string(mem_ctx, &req8->destination_dsa_guid),
1014 lp_realm(dce_call->conn->dce_ctx->lp_ctx));
1015 if (!ureq.dest_dsa_dns_name) {
1018 ureq.dest_dsa_guid = req8->destination_dsa_guid;
1019 ureq.options = DRSUAPI_DRS_ADD_REF |
1020 DRSUAPI_DRS_ASYNC_OP |
1021 DRSUAPI_DRS_GETCHG_CHECK;
1022 werr = drsuapi_UpdateRefs(b_state, mem_ctx, &ureq);
1023 if (!W_ERROR_IS_OK(werr)) {
1024 DEBUG(0,(__location__ ": Failed UpdateRefs in DsGetNCChanges - %s\n",
1029 if (i < getnc_state->site_res->count) {
1030 r->out.ctr->ctr6.more_data = true;
1032 r->out.ctr->ctr6.linked_attributes_count = getnc_state->la_count;
1033 r->out.ctr->ctr6.linked_attributes = talloc_steal(mem_ctx, getnc_state->la_list);
1035 LDB_TYPESAFE_QSORT(r->out.ctr->ctr6.linked_attributes, r->out.ctr->ctr6.linked_attributes_count,
1036 b_state->sam_ctx, linked_attribute_compare);
1038 r->out.ctr->ctr6.uptodateness_vector = talloc(mem_ctx, struct drsuapi_DsReplicaCursor2CtrEx);
1039 r->out.ctr->ctr6.new_highwatermark.highest_usn = r->out.ctr->ctr6.new_highwatermark.tmp_highest_usn;
1041 werr = get_nc_changes_udv(b_state->sam_ctx, getnc_state->ncRoot_dn,
1042 r->out.ctr->ctr6.uptodateness_vector);
1043 if (!W_ERROR_IS_OK(werr)) {
1047 talloc_free(getnc_state);
1048 b_state->getncchanges_state = NULL;
1051 if (req8->extended_op != DRSUAPI_EXOP_NONE) {
1052 r->out.ctr->ctr6.uptodateness_vector = NULL;
1053 r->out.ctr->ctr6.nc_object_count = 0;
1054 ZERO_STRUCT(r->out.ctr->ctr6.new_highwatermark);
1057 DEBUG(r->out.ctr->ctr6.more_data?2:1,
1058 ("DsGetNCChanges with uSNChanged >= %llu flags 0x%08x on %s gave %u objects (done %d/%d la=%d)\n",
1059 (unsigned long long)(req8->highwatermark.highest_usn+1),
1060 req8->replica_flags,
1061 ncRoot->dn, r->out.ctr->ctr6.object_count,
1062 i, r->out.ctr->ctr6.more_data?getnc_state->site_res->count:i,
1063 r->out.ctr->ctr6.linked_attributes_count));
1066 if (!r->out.ctr->ctr6.more_data) {
1067 NDR_PRINT_FUNCTION_DEBUG(drsuapi_DsGetNCChanges, NDR_BOTH, r);