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"
35 build a DsReplicaObjectIdentifier from a ldb msg
37 static struct drsuapi_DsReplicaObjectIdentifier *get_object_identifier(TALLOC_CTX *mem_ctx,
38 struct ldb_message *msg)
40 struct drsuapi_DsReplicaObjectIdentifier *identifier;
43 identifier = talloc(mem_ctx, struct drsuapi_DsReplicaObjectIdentifier);
44 if (identifier == NULL) {
48 identifier->dn = ldb_dn_alloc_linearized(identifier, msg->dn);
49 identifier->guid = samdb_result_guid(msg, "objectGUID");
51 sid = samdb_result_dom_sid(identifier, msg, "objectSid");
53 identifier->sid = *sid;
55 ZERO_STRUCT(identifier->sid);
61 drsuapi_DsGetNCChanges for one object
63 static WERROR get_nc_changes_build_object(struct drsuapi_DsReplicaObjectListItemEx *obj,
64 struct ldb_message *msg,
65 struct ldb_context *sam_ctx,
66 struct ldb_dn *ncRoot_dn,
67 struct dsdb_schema *schema,
68 DATA_BLOB *session_key,
70 uint32_t replica_flags)
72 const struct ldb_val *md_value;
74 struct replPropertyMetaDataBlob md;
76 enum ndr_err_code ndr_err;
79 const struct dsdb_attribute *rdn_sa;
81 if (ldb_dn_compare(ncRoot_dn, msg->dn) == 0) {
82 obj->is_nc_prefix = true;
83 obj->parent_object_guid = NULL;
85 obj->is_nc_prefix = false;
86 obj->parent_object_guid = talloc(obj, struct GUID);
87 if (obj->parent_object_guid == NULL) {
88 return WERR_DS_DRA_INTERNAL_ERROR;
90 *obj->parent_object_guid = samdb_result_guid(msg, "parentGUID");
91 if (GUID_all_zero(obj->parent_object_guid)) {
92 DEBUG(0,(__location__ ": missing parentGUID for %s\n",
93 ldb_dn_get_linearized(msg->dn)));
94 return WERR_DS_DRA_INTERNAL_ERROR;
97 obj->next_object = NULL;
99 md_value = ldb_msg_find_ldb_val(msg, "replPropertyMetaData");
101 /* nothing to send */
105 ndr_err = ndr_pull_struct_blob(md_value, obj,
106 lp_iconv_convenience(ldb_get_opaque(sam_ctx, "loadparm")), &md,
107 (ndr_pull_flags_fn_t)ndr_pull_replPropertyMetaDataBlob);
108 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
109 return WERR_DS_DRA_INTERNAL_ERROR;
112 if (md.version != 1) {
113 return WERR_DS_DRA_INTERNAL_ERROR;
116 rdn = ldb_dn_get_rdn_name(msg->dn);
118 DEBUG(0,(__location__ ": No rDN for %s\n", ldb_dn_get_linearized(msg->dn)));
119 return WERR_DS_DRA_INTERNAL_ERROR;
122 rdn_sa = dsdb_attribute_by_lDAPDisplayName(schema, rdn);
123 if (rdn_sa == NULL) {
124 DEBUG(0,(__location__ ": Can't find dsds_attribute for rDN %s in %s\n",
125 rdn, ldb_dn_get_linearized(msg->dn)));
126 return WERR_DS_DRA_INTERNAL_ERROR;
129 obj->meta_data_ctr = talloc(obj, struct drsuapi_DsReplicaMetaDataCtr);
130 attids = talloc_array(obj, uint32_t, md.ctr.ctr1.count);
132 obj->object.identifier = get_object_identifier(obj, msg);
133 if (obj->object.identifier == NULL) {
136 dom_sid_split_rid(NULL, &obj->object.identifier->sid, NULL, &rid);
138 obj->meta_data_ctr->meta_data = talloc_array(obj, struct drsuapi_DsReplicaMetaData, md.ctr.ctr1.count);
139 for (n=i=0; i<md.ctr.ctr1.count; i++) {
140 const struct dsdb_attribute *sa;
141 /* if the attribute has not changed, and it is not the
142 instanceType then don't include it */
143 if (md.ctr.ctr1.array[i].local_usn < highest_usn &&
144 md.ctr.ctr1.array[i].attid != DRSUAPI_ATTRIBUTE_instanceType) continue;
146 /* don't include the rDN */
147 if (md.ctr.ctr1.array[i].attid == rdn_sa->attributeID_id) continue;
149 sa = dsdb_attribute_by_attributeID_id(schema, md.ctr.ctr1.array[i].attid);
151 struct ldb_message_element *el;
152 el = ldb_msg_find_element(msg, sa->lDAPDisplayName);
153 if (el && el->num_values && dsdb_dn_is_upgraded_link_val(&el->values[0])) {
154 /* don't send upgraded links inline */
159 obj->meta_data_ctr->meta_data[n].originating_change_time = md.ctr.ctr1.array[i].originating_change_time;
160 obj->meta_data_ctr->meta_data[n].version = md.ctr.ctr1.array[i].version;
161 obj->meta_data_ctr->meta_data[n].originating_invocation_id = md.ctr.ctr1.array[i].originating_invocation_id;
162 obj->meta_data_ctr->meta_data[n].originating_usn = md.ctr.ctr1.array[i].originating_usn;
163 attids[n] = md.ctr.ctr1.array[i].attid;
168 note that if n==0 we still need to send the change, as it
169 could be a rename, which changes the uSNChanged, but not any
170 of the replicated attributes
173 obj->meta_data_ctr->count = n;
175 obj->object.flags = DRSUAPI_DS_REPLICA_OBJECT_FROM_MASTER;
176 obj->object.attribute_ctr.num_attributes = obj->meta_data_ctr->count;
177 obj->object.attribute_ctr.attributes = talloc_array(obj, struct drsuapi_DsReplicaAttribute,
178 obj->object.attribute_ctr.num_attributes);
181 * Note that the meta_data array and the attributes array must
182 * be the same size and in the same order
184 for (i=0; i<obj->object.attribute_ctr.num_attributes; i++) {
185 struct ldb_message_element *el;
187 const struct dsdb_attribute *sa;
189 sa = dsdb_attribute_by_attributeID_id(schema, attids[i]);
191 DEBUG(0,("Unable to find attributeID %u in schema\n", attids[i]));
192 return WERR_DS_DRA_INTERNAL_ERROR;
195 el = ldb_msg_find_element(msg, sa->lDAPDisplayName);
197 /* this happens for attributes that have been removed */
198 DEBUG(5,("No element '%s' for attributeID %u in message\n",
199 sa->lDAPDisplayName, attids[i]));
200 ZERO_STRUCT(obj->object.attribute_ctr.attributes[i]);
201 obj->object.attribute_ctr.attributes[i].attid = attids[i];
203 werr = dsdb_attribute_ldb_to_drsuapi(sam_ctx, schema, el, obj,
204 &obj->object.attribute_ctr.attributes[i]);
205 if (!W_ERROR_IS_OK(werr)) {
206 DEBUG(0,("Unable to convert %s to DRS object - %s\n",
207 sa->lDAPDisplayName, win_errstr(werr)));
210 /* if DRSUAPI_DRS_SPECIAL_SECRET_PROCESSING is set
211 * check if attribute is secret and send a null value
213 if (replica_flags & DRSUAPI_DRS_SPECIAL_SECRET_PROCESSING) {
214 drsuapi_process_secret_attribute(&obj->object.attribute_ctr.attributes[i],
215 &obj->meta_data_ctr->meta_data[i]);
217 /* some attributes needs to be encrypted
219 werr = drsuapi_encrypt_attribute(obj, session_key, rid,
220 &obj->object.attribute_ctr.attributes[i]);
221 if (!W_ERROR_IS_OK(werr)) {
222 DEBUG(0,("Unable to encrypt %s in DRS object - %s\n",
223 sa->lDAPDisplayName, win_errstr(werr)));
234 add one linked attribute from an object to the list of linked
235 attributes in a getncchanges request
237 static WERROR get_nc_changes_add_la(TALLOC_CTX *mem_ctx,
238 struct ldb_context *sam_ctx,
239 const struct dsdb_schema *schema,
240 const struct dsdb_attribute *sa,
241 struct ldb_message *msg,
242 struct dsdb_dn *dsdb_dn,
243 struct drsuapi_DsReplicaLinkedAttribute **la_list,
246 struct drsuapi_DsReplicaLinkedAttribute *la;
251 (*la_list) = talloc_realloc(mem_ctx, *la_list, struct drsuapi_DsReplicaLinkedAttribute, (*la_count)+1);
252 W_ERROR_HAVE_NO_MEMORY(*la_list);
254 la = &(*la_list)[*la_count];
256 la->identifier = get_object_identifier(*la_list, msg);
257 W_ERROR_HAVE_NO_MEMORY(la->identifier);
259 active = (dsdb_dn_rmd_flags(dsdb_dn->dn) & DSDB_RMD_FLAG_DELETED) == 0;
261 la->attid = sa->attributeID_id;
262 la->flags = active?DRSUAPI_DS_LINKED_ATTRIBUTE_FLAG_ACTIVE:0;
264 status = dsdb_get_extended_dn_nttime(dsdb_dn->dn, &la->originating_add_time, "RMD_ADDTIME");
265 if (!NT_STATUS_IS_OK(status)) {
266 return ntstatus_to_werror(status);
268 status = dsdb_get_extended_dn_uint32(dsdb_dn->dn, &la->meta_data.version, "RMD_VERSION");
269 if (!NT_STATUS_IS_OK(status)) {
270 return ntstatus_to_werror(status);
272 status = dsdb_get_extended_dn_nttime(dsdb_dn->dn, &la->meta_data.originating_change_time, "RMD_CHANGETIME");
273 if (!NT_STATUS_IS_OK(status)) {
274 return ntstatus_to_werror(status);
276 status = dsdb_get_extended_dn_guid(dsdb_dn->dn, &la->meta_data.originating_invocation_id, "RMD_INVOCID");
277 if (!NT_STATUS_IS_OK(status)) {
278 return ntstatus_to_werror(status);
280 status = dsdb_get_extended_dn_uint64(dsdb_dn->dn, &la->meta_data.originating_usn, "RMD_ORIGINATING_USN");
281 if (!NT_STATUS_IS_OK(status)) {
282 return ntstatus_to_werror(status);
285 werr = dsdb_dn_la_to_blob(sam_ctx, sa, schema, *la_list, dsdb_dn, &la->value.blob);
286 W_ERROR_NOT_OK_RETURN(werr);
294 add linked attributes from an object to the list of linked
295 attributes in a getncchanges request
297 static WERROR get_nc_changes_add_links(struct ldb_context *sam_ctx,
299 struct ldb_dn *ncRoot_dn,
300 struct dsdb_schema *schema,
301 uint64_t highest_usn,
302 uint32_t replica_flags,
303 struct ldb_message *msg,
304 struct drsuapi_DsReplicaLinkedAttribute **la_list,
308 TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
309 uint64_t uSNChanged = ldb_msg_find_attr_as_int(msg, "uSNChanged", -1);
311 for (i=0; i<msg->num_elements; i++) {
312 struct ldb_message_element *el = &msg->elements[i];
313 const struct dsdb_attribute *sa;
316 sa = dsdb_attribute_by_lDAPDisplayName(schema, el->name);
318 if (!sa || sa->linkID == 0 || (sa->linkID & 1)) {
319 /* we only want forward links */
323 if (el->num_values && !dsdb_dn_is_upgraded_link_val(&el->values[0])) {
324 /* its an old style link, it will have been
325 * sent in the main replication data */
329 for (j=0; j<el->num_values; j++) {
330 struct dsdb_dn *dsdb_dn;
335 dsdb_dn = dsdb_dn_parse(tmp_ctx, sam_ctx, &el->values[j], sa->syntax->ldap_oid);
336 if (dsdb_dn == NULL) {
337 DEBUG(1,(__location__ ": Failed to parse DN for %s in %s\n",
338 el->name, ldb_dn_get_linearized(msg->dn)));
339 talloc_free(tmp_ctx);
340 return WERR_DS_DRA_INTERNAL_ERROR;
343 status = dsdb_get_extended_dn_uint64(dsdb_dn->dn, &local_usn, "RMD_LOCAL_USN");
344 if (!NT_STATUS_IS_OK(status)) {
345 /* this can happen for attributes
346 given to us with old style meta
351 if (local_usn > uSNChanged) {
352 DEBUG(1,(__location__ ": uSNChanged less than RMD_LOCAL_USN for %s on %s\n",
353 el->name, ldb_dn_get_linearized(msg->dn)));
354 talloc_free(tmp_ctx);
355 return WERR_DS_DRA_INTERNAL_ERROR;
358 if (local_usn < highest_usn) {
362 werr = get_nc_changes_add_la(mem_ctx, sam_ctx, schema, sa, msg,
363 dsdb_dn, la_list, la_count);
364 if (!W_ERROR_IS_OK(werr)) {
365 talloc_free(tmp_ctx);
371 talloc_free(tmp_ctx);
376 load replUpToDateVector from a DN
378 static WERROR load_udv(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx,
379 struct ldb_dn *dn, struct replUpToDateVectorBlob *ouv)
381 const char *attrs[] = { "replUpToDateVector", NULL };
382 struct ldb_result *res = NULL;
383 TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
384 struct ldb_message_element *el;
385 enum ndr_err_code ndr_err;
389 if (ldb_search(sam_ctx, tmp_ctx, &res, dn, LDB_SCOPE_BASE, attrs, NULL) != LDB_SUCCESS ||
391 DEBUG(0,("load_udv: failed to read partition object\n"));
392 talloc_free(tmp_ctx);
393 return WERR_DS_DRA_INTERNAL_ERROR;
396 el = ldb_msg_find_element(res->msgs[0], "replUpToDateVector");
397 if (el == NULL || el->num_values < 1) {
398 talloc_free(tmp_ctx);
403 ndr_err = ndr_pull_struct_blob(&el->values[0],
404 mem_ctx, lp_iconv_convenience(ldb_get_opaque(sam_ctx, "loadparm")),
406 (ndr_pull_flags_fn_t)ndr_pull_replUpToDateVectorBlob);
407 talloc_free(tmp_ctx);
408 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
409 DEBUG(0,(__location__ ": Failed to parse replUpToDateVector for %s\n",
410 ldb_dn_get_linearized(dn)));
411 return WERR_DS_DRA_INTERNAL_ERROR;
419 fill in the cursors return based on the replUpToDateVector for the ncRoot_dn
421 static WERROR get_nc_changes_udv(struct ldb_context *sam_ctx,
422 struct ldb_dn *ncRoot_dn,
423 struct drsuapi_DsReplicaCursor2CtrEx *udv,
427 struct drsuapi_DsReplicaCursor2 *tmp_cursor;
429 time_t t = time(NULL);
430 struct replUpToDateVectorBlob ouv;
433 werr = load_udv(sam_ctx, udv, ncRoot_dn, &ouv);
434 if (!W_ERROR_IS_OK(werr)) {
438 tmp_cursor = talloc(udv, struct drsuapi_DsReplicaCursor2);
439 tmp_cursor->source_dsa_invocation_id = *(samdb_ntds_invocation_id(sam_ctx));
440 tmp_cursor->highest_usn = highestUSN;
441 unix_to_nt_time(&now, t);
442 tmp_cursor->last_sync_success = now;
444 udv->count = ouv.ctr.ctr2.count;
445 udv->cursors = talloc_steal(udv, ouv.ctr.ctr2.cursors);
447 for (i=0; i<udv->count; i++) {
448 if (GUID_equal(&tmp_cursor->source_dsa_invocation_id,
449 &udv->cursors[i].source_dsa_invocation_id)) {
450 udv->cursors[i] = *tmp_cursor;
454 if (i == udv->count) {
455 udv->cursors = talloc_realloc(udv, udv->cursors, struct drsuapi_DsReplicaCursor2, udv->count+1);
457 return WERR_DS_DRA_INTERNAL_ERROR;
459 udv->cursors[udv->count] = *tmp_cursor;
463 qsort(udv->cursors, udv->count,
464 sizeof(struct drsuapi_DsReplicaCursor2),
465 (comparison_fn_t)drsuapi_DsReplicaCursor2_compare);
471 /* comparison function for linked attributes - see CompareLinks() in
472 * MS-DRSR section 4.1.10.5.17 */
473 static int linked_attribute_compare(const struct drsuapi_DsReplicaLinkedAttribute *la1,
474 const struct drsuapi_DsReplicaLinkedAttribute *la2,
475 struct ldb_context *sam_ctx)
480 const struct dsdb_schema *schema;
481 const struct dsdb_attribute *schema_attrib;
482 struct dsdb_dn *dn1, *dn2;
483 struct GUID guid1, guid2;
486 c = GUID_compare(&la1->identifier->guid,
487 &la2->identifier->guid);
488 if (c != 0) return c;
490 if (la1->attid != la2->attid) {
491 return la1->attid < la2->attid? -1:1;
494 if ((la1->flags & DRSUAPI_DS_LINKED_ATTRIBUTE_FLAG_ACTIVE) !=
495 (la2->flags & DRSUAPI_DS_LINKED_ATTRIBUTE_FLAG_ACTIVE)) {
496 return (la1->flags & DRSUAPI_DS_LINKED_ATTRIBUTE_FLAG_ACTIVE)? 1:-1;
499 /* we need to get the target GUIDs to compare */
500 tmp_ctx = talloc_new(sam_ctx);
502 schema = dsdb_get_schema(sam_ctx);
503 schema_attrib = dsdb_attribute_by_attributeID_id(schema, la1->attid);
505 werr = dsdb_dn_la_from_blob(sam_ctx, schema_attrib, schema, tmp_ctx, la1->value.blob, &dn1);
506 if (!W_ERROR_IS_OK(werr)) {
507 DEBUG(0,(__location__ ": Bad la1 blob in sort\n"));
508 talloc_free(tmp_ctx);
512 werr = dsdb_dn_la_from_blob(sam_ctx, schema_attrib, schema, tmp_ctx, la2->value.blob, &dn2);
513 if (!W_ERROR_IS_OK(werr)) {
514 DEBUG(0,(__location__ ": Bad la2 blob in sort\n"));
515 talloc_free(tmp_ctx);
519 status = dsdb_get_extended_dn_guid(dn1->dn, &guid1, "GUID");
520 if (!NT_STATUS_IS_OK(status)) {
521 DEBUG(0,(__location__ ": Bad la1 guid in sort\n"));
522 talloc_free(tmp_ctx);
525 status = dsdb_get_extended_dn_guid(dn2->dn, &guid2, "GUID");
526 if (!NT_STATUS_IS_OK(status)) {
527 DEBUG(0,(__location__ ": Bad la2 guid in sort\n"));
528 talloc_free(tmp_ctx);
532 talloc_free(tmp_ctx);
534 return GUID_compare(&guid1, &guid2);
539 sort the objects we send by tree order
541 static int site_res_cmp_parent_order(const struct ldb_message **m1, const struct ldb_message **m2)
543 return ldb_dn_compare((*m2)->dn, (*m1)->dn);
547 sort the objects we send first by uSNChanged
549 static int site_res_cmp_usn_order(const struct ldb_message **m1, const struct ldb_message **m2)
551 unsigned usnchanged1, usnchanged2;
553 cn1 = ldb_dn_get_comp_num((*m1)->dn);
554 cn2 = ldb_dn_get_comp_num((*m2)->dn);
556 return cn1 > cn2 ? 1 : -1;
558 usnchanged1 = ldb_msg_find_attr_as_uint(*m1, "uSNChanged", 0);
559 usnchanged2 = ldb_msg_find_attr_as_uint(*m2, "uSNChanged", 0);
560 if (usnchanged1 == usnchanged2) {
563 return usnchanged1 > usnchanged2 ? 1 : -1;
568 handle a DRSUAPI_EXOP_FSMO_RID_ALLOC call
570 static WERROR getncchanges_rid_alloc(struct drsuapi_bind_state *b_state,
572 struct drsuapi_DsGetNCChangesRequest8 *req8,
573 struct drsuapi_DsGetNCChangesCtr6 *ctr6)
575 struct ldb_dn *rid_manager_dn, *fsmo_role_dn, *req_dn;
577 struct ldb_context *ldb = b_state->sam_ctx;
578 struct ldb_result *ext_res;
579 struct ldb_dn *base_dn;
580 struct dsdb_fsmo_extended_op *exop;
584 - verify that the DN being asked for is the RID Manager DN
585 - verify that we are the RID Manager
588 /* work out who is the RID Manager */
589 ret = samdb_rid_manager_dn(ldb, mem_ctx, &rid_manager_dn);
590 if (ret != LDB_SUCCESS) {
591 DEBUG(0, (__location__ ": Failed to find RID Manager object - %s", ldb_errstring(ldb)));
592 return WERR_DS_DRA_INTERNAL_ERROR;
595 req_dn = ldb_dn_new(ldb, mem_ctx, req8->naming_context->dn);
597 !ldb_dn_validate(req_dn) ||
598 ldb_dn_compare(samdb_ntds_settings_dn(ldb), rid_manager_dn) != 0) {
599 /* that isn't the RID Manager DN */
600 DEBUG(0,(__location__ ": RID Alloc request for wrong DN %s",
601 req8->naming_context->dn));
602 ctr6->extended_ret = DRSUAPI_EXOP_ERR_MISMATCH;
606 /* find the DN of the RID Manager */
607 ret = samdb_reference_dn(ldb, mem_ctx, rid_manager_dn, "fSMORoleOwner", &fsmo_role_dn);
608 if (ret != LDB_SUCCESS) {
609 DEBUG(0,(__location__ ": Failed to find fSMORoleOwner in RID Manager object - %s",
610 ldb_errstring(ldb)));
611 return WERR_DS_DRA_INTERNAL_ERROR;
614 if (ldb_dn_compare(samdb_ntds_settings_dn(ldb), fsmo_role_dn) != 0) {
615 /* we're not the RID Manager - go away */
616 DEBUG(0,(__location__ ": RID Alloc request when not RID Manager"));
617 ctr6->extended_ret = DRSUAPI_EXOP_ERR_FSMO_NOT_OWNER;
621 exop = talloc(mem_ctx, struct dsdb_fsmo_extended_op);
622 W_ERROR_HAVE_NO_MEMORY(exop);
624 exop->fsmo_info = req8->fsmo_info;
625 exop->destination_dsa_guid = req8->destination_dsa_guid;
627 ret = ldb_extended(ldb, DSDB_EXTENDED_ALLOCATE_RID_POOL, exop, &ext_res);
628 if (ret != LDB_SUCCESS) {
629 DEBUG(0,(__location__ ": Failed extended allocation RID pool operation - %s\n",
630 ldb_errstring(ldb)));
631 return WERR_DS_DRA_INTERNAL_ERROR;
633 talloc_free(ext_res);
635 base_dn = samdb_base_dn(ldb);
637 DEBUG(2,("Allocated RID pool for server %s\n",
638 GUID_string(mem_ctx, &req8->destination_dsa_guid)));
640 /* to complete the rest of the operation we need to point
641 getncchanges at the base DN for the domain */
642 req8->naming_context->dn = ldb_dn_get_linearized(base_dn);
643 ret = dsdb_find_guid_by_dn(ldb, base_dn, &req8->naming_context->guid);
644 if (ret != LDB_SUCCESS) {
645 DEBUG(0,(__location__ ": Failed to find base DN GUID - %s\n",
646 ldb_errstring(ldb)));
647 return WERR_DS_DRA_INTERNAL_ERROR;
655 /* state of a partially completed getncchanges call */
656 struct drsuapi_getncchanges_state {
657 struct ldb_result *site_res;
659 struct ldb_dn *ncRoot_dn;
661 uint64_t highest_usn;
662 struct ldb_dn *last_dn;
663 struct drsuapi_DsReplicaLinkedAttribute *la_list;
668 drsuapi_DsGetNCChanges
670 see MS-DRSR 4.1.10.5.2 for basic logic of this function
672 WERROR dcesrv_drsuapi_DsGetNCChanges(struct dcesrv_call_state *dce_call, TALLOC_CTX *mem_ctx,
673 struct drsuapi_DsGetNCChanges *r)
675 struct drsuapi_DsReplicaObjectIdentifier *ncRoot;
678 struct dsdb_schema *schema;
679 struct drsuapi_DsReplicaOIDMapping_Ctr *ctr;
680 struct drsuapi_DsReplicaObjectListItemEx **currentObject;
682 DATA_BLOB session_key;
683 const char *attrs[] = { "*", "distinguishedName",
684 "nTSecurityDescriptor",
686 "replPropertyMetaData",
691 "supplementalCredentials",
694 struct dcesrv_handle *h;
695 struct drsuapi_bind_state *b_state;
696 struct drsuapi_getncchanges_state *getnc_state;
697 struct drsuapi_DsGetNCChangesRequest8 *req8;
699 uint32_t max_objects;
701 DCESRV_PULL_HANDLE_WERR(h, r->in.bind_handle, DRSUAPI_BIND_HANDLE);
704 *r->out.level_out = 6;
705 /* TODO: linked attributes*/
706 r->out.ctr->ctr6.linked_attributes_count = 0;
707 r->out.ctr->ctr6.linked_attributes = NULL;
709 r->out.ctr->ctr6.object_count = 0;
710 r->out.ctr->ctr6.nc_object_count = 0;
711 r->out.ctr->ctr6.more_data = false;
712 r->out.ctr->ctr6.uptodateness_vector = NULL;
714 /* a RODC doesn't allow for any replication */
715 if (samdb_rodc(ldb_get_opaque(b_state->sam_ctx, "loadparm"))) {
716 DEBUG(0,(__location__ ": DsGetNCChanges attempt on RODC\n"));
717 return WERR_DS_DRA_SOURCE_DISABLED;
720 /* Check request revision.
721 TODO: Adding mappings to req8 from the other levels
723 if (r->in.level != 8) {
724 DEBUG(0,(__location__ ": Request for DsGetNCChanges with unsupported level %u\n",
726 return WERR_REVISION_MISMATCH;
729 req8 = &r->in.req->req8;
731 /* Perform access checks. */
732 /* TODO: we need to support a sync on a specific non-root
733 * DN. We'll need to find the real partition root here */
734 ncRoot = req8->naming_context;
735 if (ncRoot == NULL) {
736 DEBUG(0,(__location__ ": Request for DsGetNCChanges with no NC\n"));
737 return WERR_DS_DRA_INVALID_PARAMETER;
740 if (samdb_ntds_options(b_state->sam_ctx, &options) != LDB_SUCCESS) {
741 return WERR_DS_DRA_INTERNAL_ERROR;
744 if ((options & DS_NTDSDSA_OPT_DISABLE_OUTBOUND_REPL) &&
745 !(req8->replica_flags & DRSUAPI_DRS_SYNC_FORCED)) {
746 return WERR_DS_DRA_SOURCE_DISABLED;
750 if (req8->replica_flags & DRSUAPI_DS_REPLICA_NEIGHBOUR_FULL_SYNC_PACKET) {
751 /* Ignore the _in_ uptpdateness vector*/
752 req8->uptodateness_vector = NULL;
755 werr = drs_security_level_check(dce_call, "DsGetNCChanges");
756 if (!W_ERROR_IS_OK(werr)) {
760 /* we don't yet support extended operations */
761 switch (req8->extended_op) {
762 case DRSUAPI_EXOP_NONE:
765 case DRSUAPI_EXOP_FSMO_RID_ALLOC:
766 werr = getncchanges_rid_alloc(b_state, mem_ctx, req8, &r->out.ctr->ctr6);
767 W_ERROR_NOT_OK_RETURN(werr);
770 case DRSUAPI_EXOP_FSMO_REQ_ROLE:
771 case DRSUAPI_EXOP_FSMO_RID_REQ_ROLE:
772 case DRSUAPI_EXOP_FSMO_REQ_PDC:
773 case DRSUAPI_EXOP_FSMO_ABANDON_ROLE:
774 case DRSUAPI_EXOP_REPL_OBJ:
775 case DRSUAPI_EXOP_REPL_SECRET:
776 DEBUG(0,(__location__ ": Request for DsGetNCChanges unsupported extended op 0x%x\n",
777 (unsigned)req8->extended_op));
778 return WERR_DS_DRA_NOT_SUPPORTED;
781 getnc_state = b_state->getncchanges_state;
783 /* see if a previous replication has been abandoned */
785 struct ldb_dn *new_dn = ldb_dn_new(getnc_state, b_state->sam_ctx, ncRoot->dn);
786 if (ldb_dn_compare(new_dn, getnc_state->ncRoot_dn) != 0) {
787 DEBUG(0,(__location__ ": DsGetNCChanges 2nd replication on different DN %s %s (last_dn %s)\n",
788 ldb_dn_get_linearized(new_dn),
789 ldb_dn_get_linearized(getnc_state->ncRoot_dn),
790 ldb_dn_get_linearized(getnc_state->last_dn)));
791 talloc_free(getnc_state);
796 if (getnc_state == NULL) {
797 getnc_state = talloc_zero(b_state, struct drsuapi_getncchanges_state);
798 if (getnc_state == NULL) {
801 b_state->getncchanges_state = getnc_state;
802 getnc_state->ncRoot_dn = ldb_dn_new(getnc_state, b_state->sam_ctx, ncRoot->dn);
805 if (!ldb_dn_validate(getnc_state->ncRoot_dn) ||
806 ldb_dn_is_null(getnc_state->ncRoot_dn)) {
807 DEBUG(0,(__location__ ": Bad DN '%s'\n", ncRoot->dn));
808 return WERR_DS_DRA_INVALID_PARAMETER;
811 /* we need the session key for encrypting password attributes */
812 status = dcesrv_inherited_session_key(dce_call->conn, &session_key);
813 if (!NT_STATUS_IS_OK(status)) {
814 DEBUG(0,(__location__ ": Failed to get session key\n"));
815 return WERR_DS_DRA_INTERNAL_ERROR;
819 TODO: MS-DRSR section 4.1.10.1.1
820 Work out if this is the start of a new cycle */
822 if (getnc_state->site_res == NULL) {
824 enum ldb_scope scope = LDB_SCOPE_SUBTREE;
825 const char *extra_filter;
827 extra_filter = lp_parm_string(dce_call->conn->dce_ctx->lp_ctx, NULL, "drs", "object filter");
829 getnc_state->min_usn = req8->highwatermark.highest_usn;
831 /* Construct response. */
832 search_filter = talloc_asprintf(mem_ctx,
833 "(uSNChanged>=%llu)",
834 (unsigned long long)(getnc_state->min_usn+1));
837 search_filter = talloc_asprintf(mem_ctx, "(&%s(%s))", search_filter, extra_filter);
840 if (req8->replica_flags & DRSUAPI_DS_REPLICA_NEIGHBOUR_CRITICAL_ONLY) {
841 search_filter = talloc_asprintf(mem_ctx,
842 "(&%s(isCriticalSystemObject=TRUE))",
846 if (req8->replica_flags & DRSUAPI_DS_REPLICA_NEIGHBOUR_ASYNC_REP) {
847 scope = LDB_SCOPE_BASE;
850 DEBUG(1,(__location__ ": getncchanges on %s using filter %s\n",
851 ldb_dn_get_linearized(getnc_state->ncRoot_dn), search_filter));
852 ret = drsuapi_search_with_extended_dn(b_state->sam_ctx, getnc_state, &getnc_state->site_res,
853 getnc_state->ncRoot_dn, scope, attrs,
855 if (ret != LDB_SUCCESS) {
856 return WERR_DS_DRA_INTERNAL_ERROR;
859 if (req8->replica_flags & DRSUAPI_DS_REPLICA_NEIGHBOUR_RETURN_OBJECT_PARENTS) {
860 qsort(getnc_state->site_res->msgs,
861 getnc_state->site_res->count,
862 sizeof(getnc_state->site_res->msgs[0]),
863 (comparison_fn_t)site_res_cmp_parent_order);
865 qsort(getnc_state->site_res->msgs,
866 getnc_state->site_res->count,
867 sizeof(getnc_state->site_res->msgs[0]),
868 (comparison_fn_t)site_res_cmp_usn_order);
874 schema = dsdb_get_schema(b_state->sam_ctx);
876 DEBUG(0,("No schema in sam_ctx\n"));
877 return WERR_DS_DRA_INTERNAL_ERROR;
880 r->out.ctr->ctr6.naming_context = talloc(mem_ctx, struct drsuapi_DsReplicaObjectIdentifier);
881 *r->out.ctr->ctr6.naming_context = *ncRoot;
883 if (dsdb_find_guid_by_dn(b_state->sam_ctx, getnc_state->ncRoot_dn,
884 &r->out.ctr->ctr6.naming_context->guid) != LDB_SUCCESS) {
885 DEBUG(0,(__location__ ": Failed to find GUID of ncRoot_dn %s\n",
886 ldb_dn_get_linearized(getnc_state->ncRoot_dn)));
887 return WERR_DS_DRA_INTERNAL_ERROR;
890 /* find the SID if there is one */
891 dsdb_find_sid_by_dn(b_state->sam_ctx, getnc_state->ncRoot_dn, &r->out.ctr->ctr6.naming_context->sid);
893 dsdb_get_oid_mappings_drsuapi(schema, true, mem_ctx, &ctr);
894 r->out.ctr->ctr6.mapping_ctr = *ctr;
896 r->out.ctr->ctr6.source_dsa_guid = *(samdb_ntds_objectGUID(b_state->sam_ctx));
897 r->out.ctr->ctr6.source_dsa_invocation_id = *(samdb_ntds_invocation_id(b_state->sam_ctx));
899 r->out.ctr->ctr6.old_highwatermark = req8->highwatermark;
900 r->out.ctr->ctr6.new_highwatermark = req8->highwatermark;
902 r->out.ctr->ctr6.first_object = NULL;
903 currentObject = &r->out.ctr->ctr6.first_object;
905 /* use this to force single objects at a time, which is useful
906 * for working out what object is giving problems
908 max_objects = lp_parm_int(dce_call->conn->dce_ctx->lp_ctx, NULL, "drs", "max object sync", 1000);
909 if (req8->max_object_count < max_objects) {
910 max_objects = req8->max_object_count;
913 for(i=getnc_state->num_sent;
914 i<getnc_state->site_res->count &&
915 (r->out.ctr->ctr6.object_count < max_objects);
918 struct drsuapi_DsReplicaObjectListItemEx *obj;
919 struct ldb_message *msg = getnc_state->site_res->msgs[i];
921 obj = talloc_zero(mem_ctx, struct drsuapi_DsReplicaObjectListItemEx);
923 werr = get_nc_changes_build_object(obj, msg,
924 b_state->sam_ctx, getnc_state->ncRoot_dn,
925 schema, &session_key, getnc_state->min_usn,
926 req8->replica_flags);
927 if (!W_ERROR_IS_OK(werr)) {
931 werr = get_nc_changes_add_links(b_state->sam_ctx, getnc_state,
932 getnc_state->ncRoot_dn,
933 schema, getnc_state->min_usn,
936 &getnc_state->la_list,
937 &getnc_state->la_count);
938 if (!W_ERROR_IS_OK(werr)) {
942 uSN = ldb_msg_find_attr_as_int(msg, "uSNChanged", -1);
943 if (uSN > r->out.ctr->ctr6.new_highwatermark.tmp_highest_usn) {
944 r->out.ctr->ctr6.new_highwatermark.tmp_highest_usn = uSN;
946 if (uSN > getnc_state->highest_usn) {
947 getnc_state->highest_usn = uSN;
950 if (obj->meta_data_ctr == NULL) {
951 DEBUG(0,(__location__ ": getncchanges skipping send of object %s\n",
952 ldb_dn_get_linearized(msg->dn)));
953 /* no attributes to send */
958 r->out.ctr->ctr6.object_count++;
960 *currentObject = obj;
961 currentObject = &obj->next_object;
963 talloc_free(getnc_state->last_dn);
964 getnc_state->last_dn = ldb_dn_copy(getnc_state, msg->dn);
966 DEBUG(8,(__location__ ": replicating object %s\n", ldb_dn_get_linearized(msg->dn)));
969 getnc_state->num_sent += r->out.ctr->ctr6.object_count;
971 r->out.ctr->ctr6.nc_object_count = getnc_state->site_res->count;
973 /* the client can us to call UpdateRefs on its behalf to
974 re-establish monitoring of the NC */
975 if ((req8->replica_flags & DRSUAPI_DRS_ADD_REF) &&
976 !GUID_all_zero(&req8->destination_dsa_guid)) {
977 struct drsuapi_DsReplicaUpdateRefsRequest1 ureq;
978 ureq.naming_context = ncRoot;
979 ureq.dest_dsa_dns_name = talloc_asprintf(mem_ctx, "%s._msdcs.%s",
980 GUID_string(mem_ctx, &req8->destination_dsa_guid),
981 lp_realm(dce_call->conn->dce_ctx->lp_ctx));
982 if (!ureq.dest_dsa_dns_name) {
985 ureq.dest_dsa_guid = req8->destination_dsa_guid;
986 ureq.options = DRSUAPI_DS_REPLICA_UPDATE_ADD_REFERENCE |
987 DRSUAPI_DS_REPLICA_UPDATE_ASYNCHRONOUS_OPERATION |
988 DRSUAPI_DS_REPLICA_UPDATE_GETCHG_CHECK;
989 werr = drsuapi_UpdateRefs(b_state, mem_ctx, &ureq);
990 if (!W_ERROR_IS_OK(werr)) {
991 DEBUG(0,(__location__ ": Failed UpdateRefs in DsGetNCChanges - %s\n",
996 if (i < getnc_state->site_res->count) {
997 r->out.ctr->ctr6.more_data = true;
999 r->out.ctr->ctr6.linked_attributes_count = getnc_state->la_count;
1000 r->out.ctr->ctr6.linked_attributes = talloc_steal(mem_ctx, getnc_state->la_list);
1002 ldb_qsort(r->out.ctr->ctr6.linked_attributes, r->out.ctr->ctr6.linked_attributes_count,
1003 sizeof(r->out.ctr->ctr6.linked_attributes[0]),
1004 b_state->sam_ctx, (ldb_qsort_cmp_fn_t)linked_attribute_compare);
1006 r->out.ctr->ctr6.uptodateness_vector = talloc(mem_ctx, struct drsuapi_DsReplicaCursor2CtrEx);
1007 r->out.ctr->ctr6.uptodateness_vector->version = 2;
1008 r->out.ctr->ctr6.uptodateness_vector->reserved1 = 0;
1009 r->out.ctr->ctr6.uptodateness_vector->reserved2 = 0;
1011 r->out.ctr->ctr6.new_highwatermark.highest_usn = r->out.ctr->ctr6.new_highwatermark.tmp_highest_usn;
1013 werr = get_nc_changes_udv(b_state->sam_ctx, getnc_state->ncRoot_dn,
1014 r->out.ctr->ctr6.uptodateness_vector,
1015 getnc_state->highest_usn);
1016 if (!W_ERROR_IS_OK(werr)) {
1020 talloc_free(getnc_state);
1021 b_state->getncchanges_state = NULL;
1024 DEBUG(r->out.ctr->ctr6.more_data?2:1,
1025 ("DsGetNCChanges with uSNChanged >= %llu flags 0x%08x on %s gave %u objects (done %d/%d la=%d)\n",
1026 (unsigned long long)(req8->highwatermark.highest_usn+1),
1027 req8->replica_flags,
1028 ncRoot->dn, r->out.ctr->ctr6.object_count,
1029 i, r->out.ctr->ctr6.more_data?getnc_state->site_res->count:i,
1030 r->out.ctr->ctr6.linked_attributes_count));
1033 if (!r->out.ctr->ctr6.more_data) {
1034 NDR_PRINT_FUNCTION_DEBUG(drsuapi_DsGetNCChanges, NDR_BOTH, r);