Copyright (C) Andrew Tridgell 2005
Copyright (C) Stefan Metzmacher <metze@samba.org> 2007
- ** NOTE! The following LGPL license applies to the ldb
- ** library. This does NOT imply that all of Samba is released
- ** under the LGPL
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
- This library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 3 of the License, or (at your option) any later version.
-
- This library is distributed in the hope that it will be useful,
+ This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/*
#include "includes.h"
#include "ldb_module.h"
#include "dsdb/samdb/samdb.h"
+#include "dsdb/common/proto.h"
#include "../libds/common/flags.h"
#include "librpc/gen_ndr/ndr_misc.h"
#include "librpc/gen_ndr/ndr_drsuapi.h"
#include "librpc/gen_ndr/ndr_drsblobs.h"
#include "param/param.h"
+#include "libcli/security/dom_sid.h"
+#include "lib/util/dlinklist.h"
+
+struct replmd_private {
+ struct la_entry *la_list;
+ uint32_t num_ncs;
+ struct nc_entry {
+ struct ldb_dn *dn;
+ struct GUID guid;
+ uint64_t mod_usn;
+ } *ncs;
+};
+
+struct la_entry {
+ struct la_entry *next, *prev;
+ struct drsuapi_DsReplicaLinkedAttribute *la;
+};
struct replmd_replicated_request {
struct ldb_module *module;
struct ldb_message *search_msg;
};
+
+/*
+ initialise the module
+ allocate the private structure and build the list
+ of partition DNs for use by replmd_notify()
+ */
+static int replmd_init(struct ldb_module *module)
+{
+ struct replmd_private *replmd_private;
+ struct ldb_context *ldb = ldb_module_get_ctx(module);
+
+ replmd_private = talloc_zero(module, struct replmd_private);
+ if (replmd_private == NULL) {
+ ldb_oom(ldb);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ ldb_module_set_private(module, replmd_private);
+
+ return ldb_next_init(module);
+}
+
+
+static int nc_compare(struct nc_entry *n1, struct nc_entry *n2)
+{
+ return ldb_dn_compare(n1->dn, n2->dn);
+}
+
+/*
+ build the list of partition DNs for use by replmd_notify()
+ */
+static int replmd_load_NCs(struct ldb_module *module)
+{
+ const char *attrs[] = { "namingContexts", NULL };
+ struct ldb_result *res = NULL;
+ int i, ret;
+ TALLOC_CTX *tmp_ctx;
+ struct ldb_context *ldb;
+ struct ldb_message_element *el;
+ struct replmd_private *replmd_private =
+ talloc_get_type(ldb_module_get_private(module), struct replmd_private);
+
+ if (replmd_private->ncs != NULL) {
+ return LDB_SUCCESS;
+ }
+
+ ldb = ldb_module_get_ctx(module);
+ tmp_ctx = talloc_new(module);
+
+ /* load the list of naming contexts */
+ ret = ldb_search(ldb, tmp_ctx, &res, ldb_dn_new(tmp_ctx, ldb, ""),
+ LDB_SCOPE_BASE, attrs, NULL);
+ if (ret != LDB_SUCCESS ||
+ res->count != 1) {
+ DEBUG(0,(__location__ ": Failed to load rootDSE\n"));
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ el = ldb_msg_find_element(res->msgs[0], "namingContexts");
+ if (el == NULL) {
+ DEBUG(0,(__location__ ": Failed to load namingContexts\n"));
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ replmd_private->num_ncs = el->num_values;
+ replmd_private->ncs = talloc_array(replmd_private, struct nc_entry,
+ replmd_private->num_ncs);
+ if (replmd_private->ncs == NULL) {
+ ldb_oom(ldb);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ for (i=0; i<replmd_private->num_ncs; i++) {
+ replmd_private->ncs[i].dn =
+ ldb_dn_from_ldb_val(replmd_private->ncs,
+ ldb, &el->values[i]);
+ replmd_private->ncs[i].mod_usn = 0;
+ }
+
+ talloc_free(res);
+
+ /* now find the GUIDs of each of those DNs */
+ for (i=0; i<replmd_private->num_ncs; i++) {
+ const char *attrs2[] = { "objectGUID", NULL };
+ ret = ldb_search(ldb, tmp_ctx, &res, replmd_private->ncs[i].dn,
+ LDB_SCOPE_BASE, attrs2, NULL);
+ if (ret != LDB_SUCCESS ||
+ res->count != 1) {
+ /* this happens when the schema is first being
+ setup */
+ talloc_free(replmd_private->ncs);
+ replmd_private->ncs = NULL;
+ replmd_private->num_ncs = 0;
+ talloc_free(tmp_ctx);
+ return LDB_SUCCESS;
+ }
+ replmd_private->ncs[i].guid =
+ samdb_result_guid(res->msgs[0], "objectGUID");
+ talloc_free(res);
+ }
+
+ /* sort the NCs into order, most to least specific */
+ qsort(replmd_private->ncs, replmd_private->num_ncs,
+ sizeof(replmd_private->ncs[0]), QSORT_CAST nc_compare);
+
+
+ talloc_free(tmp_ctx);
+
+ return LDB_SUCCESS;
+}
+
+
+/*
+ * notify the repl task that a object has changed. The notifies are
+ * gathered up in the replmd_private structure then written to the
+ * @REPLCHANGED object in each partition during the prepare_commit
+ */
+static int replmd_notify(struct ldb_module *module, struct ldb_dn *dn, uint64_t uSN)
+{
+ int ret, i;
+ struct replmd_private *replmd_private =
+ talloc_get_type(ldb_module_get_private(module), struct replmd_private);
+
+ ret = replmd_load_NCs(module);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+ if (replmd_private->num_ncs == 0) {
+ return LDB_SUCCESS;
+ }
+
+ for (i=0; i<replmd_private->num_ncs; i++) {
+ if (ldb_dn_compare_base(replmd_private->ncs[i].dn, dn) == 0) {
+ break;
+ }
+ }
+ if (i == replmd_private->num_ncs) {
+ DEBUG(0,(__location__ ": DN not within known NCs '%s'\n",
+ ldb_dn_get_linearized(dn)));
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ if (uSN > replmd_private->ncs[i].mod_usn) {
+ replmd_private->ncs[i].mod_usn = uSN;
+ }
+
+ return LDB_SUCCESS;
+}
+
+
+/*
+ * update a @REPLCHANGED record in each partition if there have been
+ * any writes of replicated data in the partition
+ */
+static int replmd_notify_store(struct ldb_module *module)
+{
+ int i;
+ struct replmd_private *replmd_private =
+ talloc_get_type(ldb_module_get_private(module), struct replmd_private);
+ struct ldb_context *ldb = ldb_module_get_ctx(module);
+
+ for (i=0; i<replmd_private->num_ncs; i++) {
+ int ret;
+
+ if (replmd_private->ncs[i].mod_usn == 0) {
+ /* this partition has not changed in this
+ transaction */
+ continue;
+ }
+
+ ret = dsdb_save_partition_usn(ldb, replmd_private->ncs[i].dn,
+ replmd_private->ncs[i].mod_usn);
+ if (ret != LDB_SUCCESS) {
+ DEBUG(0,(__location__ ": Failed to save partition uSN for %s\n",
+ ldb_dn_get_linearized(replmd_private->ncs[i].dn)));
+ return ret;
+ }
+ }
+
+ return LDB_SUCCESS;
+}
+
+
+/*
+ created a replmd_replicated_request context
+ */
static struct replmd_replicated_request *replmd_ctx_init(struct ldb_module *module,
- struct ldb_request *req)
+ struct ldb_request *req)
{
struct ldb_context *ldb;
struct replmd_replicated_request *ac;
schema = dsdb_get_schema(ldb);
if (!schema) {
ldb_debug_set(ldb, LDB_DEBUG_FATAL,
- "replmd_modify: no dsdb_schema loaded");
+ "replmd_add: no dsdb_schema loaded");
return LDB_ERR_CONSTRAINT_VIOLATION;
}
/* a new GUID */
guid = GUID_random();
- /* get our invicationId */
+ /* get our invocationId */
our_invocation_id = samdb_ntds_invocation_id(ldb);
if (!our_invocation_id) {
ldb_debug_set(ldb, LDB_DEBUG_ERROR,
return ret;
}
+ ret = replmd_notify(module, msg->dn, seq_num);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+
/* go on with the call chain */
return ldb_next_request(module, down_req);
}
+
+/*
+ * update the replPropertyMetaData for one element
+ */
+static int replmd_update_rpmd_element(struct ldb_context *ldb,
+ struct ldb_message *msg,
+ struct ldb_message_element *el,
+ struct replPropertyMetaDataBlob *omd,
+ struct dsdb_schema *schema,
+ uint64_t *seq_num,
+ const struct GUID *our_invocation_id,
+ NTTIME now)
+{
+ int i;
+ const struct dsdb_attribute *a;
+ struct replPropertyMetaData1 *md1;
+
+ a = dsdb_attribute_by_lDAPDisplayName(schema, el->name);
+ if (a == NULL) {
+ DEBUG(0,(__location__ ": Unable to find attribute %s in schema\n",
+ el->name));
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ if ((a->systemFlags & 0x00000001) || (a->systemFlags & 0x00000004)) {
+ /* if the attribute is not replicated (0x00000001)
+ * or constructed (0x00000004) it has no metadata
+ */
+ return LDB_SUCCESS;
+ }
+
+ for (i=0; i<omd->ctr.ctr1.count; i++) {
+ if (a->attributeID_id == omd->ctr.ctr1.array[i].attid) break;
+ }
+ if (i == omd->ctr.ctr1.count) {
+ /* we need to add a new one */
+ omd->ctr.ctr1.array = talloc_realloc(msg, omd->ctr.ctr1.array,
+ struct replPropertyMetaData1, omd->ctr.ctr1.count+1);
+ if (omd->ctr.ctr1.array == NULL) {
+ ldb_oom(ldb);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ omd->ctr.ctr1.count++;
+ ZERO_STRUCT(omd->ctr.ctr1.array[i]);
+ }
+
+ /* Get a new sequence number from the backend. We only do this
+ * if we have a change that requires a new
+ * replPropertyMetaData element
+ */
+ if (*seq_num == 0) {
+ int ret = ldb_sequence_number(ldb, LDB_SEQ_NEXT, seq_num);
+ if (ret != LDB_SUCCESS) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ }
+
+ md1 = &omd->ctr.ctr1.array[i];
+ md1->version++;
+ md1->attid = a->attributeID_id;
+ md1->originating_change_time = now;
+ md1->originating_invocation_id = *our_invocation_id;
+ md1->originating_usn = *seq_num;
+ md1->local_usn = *seq_num;
+
+ return LDB_SUCCESS;
+}
+
+/*
+ * update the replPropertyMetaData object each time we modify an
+ * object. This is needed for DRS replication, as the merge on the
+ * client is based on this object
+ */
+static int replmd_update_rpmd(struct ldb_module *module,
+ struct ldb_message *msg, uint64_t *seq_num)
+{
+ const struct ldb_val *omd_value;
+ enum ndr_err_code ndr_err;
+ struct replPropertyMetaDataBlob omd;
+ int i;
+ struct dsdb_schema *schema;
+ time_t t = time(NULL);
+ NTTIME now;
+ const struct GUID *our_invocation_id;
+ int ret;
+ const char *attrs[] = { "replPropertyMetaData" , NULL };
+ struct ldb_result *res;
+ struct ldb_context *ldb;
+
+ ldb = ldb_module_get_ctx(module);
+
+ our_invocation_id = samdb_ntds_invocation_id(ldb);
+ if (!our_invocation_id) {
+ /* this happens during an initial vampire while
+ updating the schema */
+ DEBUG(5,("No invocationID - skipping replPropertyMetaData update\n"));
+ return LDB_SUCCESS;
+ }
+
+ unix_to_nt_time(&now, t);
+
+ /* search for the existing replPropertyMetaDataBlob */
+ ret = ldb_search(ldb, msg, &res, msg->dn, LDB_SCOPE_BASE, attrs, NULL);
+ if (ret != LDB_SUCCESS || res->count < 1) {
+ DEBUG(0,(__location__ ": Object %s failed to find replPropertyMetaData\n",
+ ldb_dn_get_linearized(msg->dn)));
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+
+ omd_value = ldb_msg_find_ldb_val(res->msgs[0], "replPropertyMetaData");
+ if (!omd_value) {
+ DEBUG(0,(__location__ ": Object %s does not have a replPropertyMetaData attribute\n",
+ ldb_dn_get_linearized(msg->dn)));
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ ndr_err = ndr_pull_struct_blob(omd_value, msg,
+ lp_iconv_convenience(ldb_get_opaque(ldb, "loadparm")), &omd,
+ (ndr_pull_flags_fn_t)ndr_pull_replPropertyMetaDataBlob);
+ if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+ DEBUG(0,(__location__ ": Failed to parse replPropertyMetaData for %s\n",
+ ldb_dn_get_linearized(msg->dn)));
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ if (omd.version != 1) {
+ DEBUG(0,(__location__ ": bad version %u in replPropertyMetaData for %s\n",
+ omd.version, ldb_dn_get_linearized(msg->dn)));
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ schema = dsdb_get_schema(ldb);
+
+ for (i=0; i<msg->num_elements; i++) {
+ ret = replmd_update_rpmd_element(ldb, msg, &msg->elements[i], &omd, schema, seq_num,
+ our_invocation_id, now);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+ }
+
+ /*
+ * replmd_update_rpmd_element has done an update if the
+ * seq_num is set
+ */
+ if (*seq_num != 0) {
+ struct ldb_val *md_value;
+ struct ldb_message_element *el;
+
+ md_value = talloc(msg, struct ldb_val);
+ if (md_value == NULL) {
+ ldb_oom(ldb);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ ndr_err = ndr_push_struct_blob(md_value, msg,
+ lp_iconv_convenience(ldb_get_opaque(ldb, "loadparm")),
+ &omd,
+ (ndr_push_flags_fn_t)ndr_push_replPropertyMetaDataBlob);
+ if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+ DEBUG(0,(__location__ ": Failed to marshall replPropertyMetaData for %s\n",
+ ldb_dn_get_linearized(msg->dn)));
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ ret = ldb_msg_add_empty(msg, "replPropertyMetaData", LDB_FLAG_MOD_REPLACE, &el);
+ if (ret != LDB_SUCCESS) {
+ DEBUG(0,(__location__ ": Failed to add updated replPropertyMetaData %s\n",
+ ldb_dn_get_linearized(msg->dn)));
+ return ret;
+ }
+
+ ret = replmd_notify(module, msg->dn, *seq_num);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+
+ el->num_values = 1;
+ el->values = md_value;
+ }
+
+ return LDB_SUCCESS;
+}
+
+
static int replmd_modify(struct ldb_module *module, struct ldb_request *req)
{
struct ldb_context *ldb;
struct ldb_message *msg;
int ret;
time_t t = time(NULL);
- uint64_t seq_num;
+ uint64_t seq_num = 0;
/* do not manipulate our control entries */
if (ldb_dn_is_special(req->op.mod.message->dn)) {
* if the caller set values to the same value
* ignore the attribute, return success when no
* attribute was changed
- * - calculate the new replPropertyMetaData attribute
*/
- if (add_time_element(msg, "whenChanged", t) != LDB_SUCCESS) {
- talloc_free(ac);
- return LDB_ERR_OPERATIONS_ERROR;
- }
-
- /* Get a sequence number from the backend */
- ret = ldb_sequence_number(ldb, LDB_SEQ_NEXT, &seq_num);
- if (ret == LDB_SUCCESS) {
- if (add_uint64_element(msg, "uSNChanged", seq_num) != LDB_SUCCESS) {
- talloc_free(ac);
- return LDB_ERR_OPERATIONS_ERROR;
- }
+ ret = replmd_update_rpmd(module, msg, &seq_num);
+ if (ret != LDB_SUCCESS) {
+ return ret;
}
/* TODO:
}
talloc_steal(down_req, msg);
+ /* we only change whenChanged and uSNChanged if the seq_num
+ has changed */
+ if (seq_num != 0) {
+ if (add_time_element(msg, "whenChanged", t) != LDB_SUCCESS) {
+ talloc_free(ac);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ if (add_uint64_element(msg, "uSNChanged", seq_num) != LDB_SUCCESS) {
+ talloc_free(ac);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ }
+
/* go on with the call chain */
return ldb_next_request(module, down_req);
}
return replmd_replicated_request_error(ar, ret);
}
+ ret = replmd_notify(ar->module, msg->dn, seq_num);
+ if (ret != LDB_SUCCESS) {
+ return replmd_replicated_request_error(ar, ret);
+ }
+
/*
* the meta data array is already sorted by the caller
*/
}
}
- ret = ldb_sequence_number(ldb, LDB_SEQ_NEXT, &seq_num);
- if (ret != LDB_SUCCESS) {
- return replmd_replicated_request_error(ar, ret);
- }
-
/* find existing meta data */
omd_value = ldb_msg_find_ldb_val(ar->search_msg, "replPropertyMetaData");
if (omd_value) {
for (i=0; i < rmd->ctr.ctr1.count; i++) {
bool found = false;
- rmd->ctr.ctr1.array[i].local_usn = seq_num;
-
for (j=0; j < ni; j++) {
int cmp;
ldb_debug(ldb, LDB_DEBUG_TRACE, "replmd_replicated_apply_merge[%u]: replace %u attributes\n",
ar->index_current, msg->num_elements);
+ ret = ldb_sequence_number(ldb, LDB_SEQ_NEXT, &seq_num);
+ if (ret != LDB_SUCCESS) {
+ return replmd_replicated_request_error(ar, ret);
+ }
+
+ for (i=0; i<ni; i++) {
+ nmd.ctr.ctr1.array[i].local_usn = seq_num;
+ }
+
/*
* when we know that we'll modify the record, add the whenChanged, uSNChanged
* and replPopertyMetaData attributes
msg->elements[i].flags = LDB_FLAG_MOD_REPLACE;
}
+ ret = replmd_notify(ar->module, msg->dn, seq_num);
+ if (ret != LDB_SUCCESS) {
+ return replmd_replicated_request_error(ar, ret);
+ }
+
if (DEBUGLVL(4)) {
char *s = ldb_ldif_message_string(ldb, ar, LDB_CHANGETYPE_MODIFY, msg);
DEBUG(4, ("DRS replication modify message:\n%s\n", s));
struct ldb_request *search_req;
if (ar->index_current >= ar->objs->num_objects) {
- /* done with it, go to the last op */
+ /* done with it, go to next stage */
return replmd_replicated_uptodate_vector(ar);
}
struct ldb_val *nrf_value = NULL;
struct ldb_message_element *nrf_el = NULL;
uint32_t i,j,ni=0;
- uint64_t seq_num;
bool found = false;
time_t t = time(NULL);
NTTIME now;
unix_to_nt_time(&now, t);
- /*
- * we use the next sequence number for our own highest_usn
- * because we will do a modify request and this will increment
- * our highest_usn
- */
- ret = ldb_sequence_number(ldb, LDB_SEQ_NEXT, &seq_num);
- if (ret != LDB_SUCCESS) {
- return replmd_replicated_request_error(ar, ret);
- }
-
/*
* first create the new replUpToDateVector
*/
return ldb_next_request(ar->module, search_req);
}
+
+
static int replmd_extended_replicated_objects(struct ldb_module *module, struct ldb_request *req)
{
struct ldb_context *ldb;
struct dsdb_extended_replicated_objects *objs;
struct replmd_replicated_request *ar;
struct ldb_control **ctrls;
- int ret;
+ int ret, i;
struct dsdb_control_current_partition *partition_ctrl;
+ struct replmd_private *replmd_private =
+ talloc_get_type(ldb_module_get_private(module), struct replmd_private);
ldb = ldb_module_get_ctx(module);
ar->controls = req->controls;
req->controls = ctrls;
+ DEBUG(4,("linked_attributes_count=%u\n", objs->linked_attributes_count));
+
+ /* save away the linked attributes for the end of the
+ transaction */
+ for (i=0; i<ar->objs->linked_attributes_count; i++) {
+ struct la_entry *la_entry;
+
+ if (replmd_private->la_list) {
+ la_entry = talloc(replmd_private->la_list,
+ struct la_entry);
+ } else {
+ la_entry = talloc(replmd_private,
+ struct la_entry);
+ }
+ if (la_entry == NULL) {
+ ldb_oom(ldb);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ la_entry->la = talloc(la_entry, struct drsuapi_DsReplicaLinkedAttribute);
+ if (la_entry->la == NULL) {
+ talloc_free(la_entry);
+ ldb_oom(ldb);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ *la_entry->la = ar->objs->linked_attributes[i];
+
+ /* we need to steal the non-scalars so they stay
+ around until the end of the transaction */
+ talloc_steal(la_entry->la, la_entry->la->identifier);
+ talloc_steal(la_entry->la, la_entry->la->value.blob);
+
+ DLIST_ADD(replmd_private->la_list, la_entry);
+ }
+
return replmd_replicated_apply_next(ar);
}
+/*
+ process one linked attribute structure
+ */
+static int replmd_process_linked_attribute(struct ldb_module *module,
+ struct la_entry *la_entry)
+{
+ struct drsuapi_DsReplicaLinkedAttribute *la = la_entry->la;
+ struct ldb_context *ldb = ldb_module_get_ctx(module);
+ struct drsuapi_DsReplicaObjectIdentifier3 target;
+ struct ldb_message *msg;
+ struct ldb_message_element *ret_el;
+ TALLOC_CTX *tmp_ctx = talloc_new(la_entry);
+ enum ndr_err_code ndr_err;
+ char *target_dn;
+ struct ldb_request *mod_req;
+ int ret;
+ const struct dsdb_attribute *attr;
+
+/*
+linked_attributes[0]:
+ &objs->linked_attributes[i]: struct drsuapi_DsReplicaLinkedAttribute
+ identifier : *
+ identifier: struct drsuapi_DsReplicaObjectIdentifier
+ __ndr_size : 0x0000003a (58)
+ __ndr_size_sid : 0x00000000 (0)
+ guid : 8e95b6a9-13dd-4158-89db-3220a5be5cc7
+ sid : S-0-0
+ __ndr_size_dn : 0x00000000 (0)
+ dn : ''
+ attid : DRSUAPI_ATTRIBUTE_member (0x1F)
+ value: struct drsuapi_DsAttributeValue
+ __ndr_size : 0x0000007e (126)
+ blob : *
+ blob : DATA_BLOB length=126
+ flags : 0x00000001 (1)
+ 1: DRSUAPI_DS_LINKED_ATTRIBUTE_FLAG_ACTIVE
+ originating_add_time : Wed Sep 2 22:20:01 2009 EST
+ meta_data: struct drsuapi_DsReplicaMetaData
+ version : 0x00000015 (21)
+ originating_change_time : Wed Sep 2 23:39:07 2009 EST
+ originating_invocation_id: 794640f3-18cf-40ee-a211-a93992b67a64
+ originating_usn : 0x000000000001e19c (123292)
+ &target: struct drsuapi_DsReplicaObjectIdentifier3
+ __ndr_size : 0x0000007e (126)
+ __ndr_size_sid : 0x0000001c (28)
+ guid : 7639e594-db75-4086-b0d4-67890ae46031
+ sid : S-1-5-21-2848215498-2472035911-1947525656-19924
+ __ndr_size_dn : 0x00000022 (34)
+ dn : 'CN=UOne,OU=TestOU,DC=vsofs8,DC=com'
+ */
+ if (DEBUGLVL(4)) {
+ NDR_PRINT_DEBUG(drsuapi_DsReplicaLinkedAttribute, la);
+ }
+
+ /* decode the target of the link */
+ ndr_err = ndr_pull_struct_blob(la->value.blob,
+ tmp_ctx, lp_iconv_convenience(ldb_get_opaque(ldb, "loadparm")),
+ &target,
+ (ndr_pull_flags_fn_t)ndr_pull_drsuapi_DsReplicaObjectIdentifier3);
+ if (ndr_err != NDR_ERR_SUCCESS) {
+ DEBUG(0,("Unable to decode linked_attribute target\n"));
+ dump_data(4, la->value.blob->data, la->value.blob->length);
+ talloc_free(tmp_ctx);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ if (DEBUGLVL(4)) {
+ NDR_PRINT_DEBUG(drsuapi_DsReplicaObjectIdentifier3, &target);
+ }
+
+ /* construct a modify request for this attribute change */
+ msg = ldb_msg_new(tmp_ctx);
+ if (!msg) {
+ ldb_oom(ldb);
+ talloc_free(tmp_ctx);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ ret = dsdb_find_dn_by_guid(ldb, tmp_ctx,
+ GUID_string(tmp_ctx, &la->identifier->guid), &msg->dn);
+ if (ret != LDB_SUCCESS) {
+ talloc_free(tmp_ctx);
+ return ret;
+ }
+
+ /* find the attribute being modified */
+ attr = dsdb_attribute_by_attributeID_id(dsdb_get_schema(ldb), la->attid);
+ if (attr == NULL) {
+ DEBUG(0, (__location__ ": Unable to find attributeID 0x%x\n", la->attid));
+ talloc_free(tmp_ctx);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ if (la->flags & DRSUAPI_DS_LINKED_ATTRIBUTE_FLAG_ACTIVE) {
+ ret = ldb_msg_add_empty(msg, attr->lDAPDisplayName,
+ LDB_FLAG_MOD_ADD, &ret_el);
+ } else {
+ ret = ldb_msg_add_empty(msg, attr->lDAPDisplayName,
+ LDB_FLAG_MOD_DELETE, &ret_el);
+ }
+ if (ret != LDB_SUCCESS) {
+ talloc_free(tmp_ctx);
+ return ret;
+ }
+ ret_el->values = talloc_array(msg, struct ldb_val, 1);
+ if (!ret_el->values) {
+ ldb_oom(ldb);
+ talloc_free(tmp_ctx);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ ret_el->num_values = 1;
+
+ target_dn = talloc_asprintf(tmp_ctx, "<GUID=%s>;<SID=%s>;%s",
+ GUID_string(tmp_ctx, &target.guid),
+ dom_sid_string(tmp_ctx, &target.sid),
+ target.dn);
+ if (target_dn == NULL) {
+ ldb_oom(ldb);
+ talloc_free(tmp_ctx);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ ret_el->values[0] = data_blob_string_const(target_dn);
+
+ ret = ldb_build_mod_req(&mod_req, ldb, tmp_ctx,
+ msg,
+ NULL,
+ NULL,
+ ldb_op_default_callback,
+ NULL);
+ if (ret != LDB_SUCCESS) {
+ talloc_free(tmp_ctx);
+ return ret;
+ }
+ talloc_steal(mod_req, msg);
+
+ if (DEBUGLVL(4)) {
+ DEBUG(4,("Applying DRS linked attribute change:\n%s\n",
+ ldb_ldif_message_string(ldb, tmp_ctx, LDB_CHANGETYPE_MODIFY, msg)));
+ }
+
+ /* Run the new request */
+ ret = ldb_next_request(module, mod_req);
+
+ /* we need to wait for this to finish, as we are being called
+ from the synchronous end_transaction hook of this module */
+ if (ret == LDB_SUCCESS) {
+ ret = ldb_wait(mod_req->handle, LDB_WAIT_ALL);
+ }
+
+ if (ret != LDB_SUCCESS) {
+ ldb_debug(ldb, LDB_DEBUG_WARNING, "Failed to apply linked attribute change '%s' %s\n",
+ ldb_errstring(ldb),
+ ldb_ldif_message_string(ldb, tmp_ctx, LDB_CHANGETYPE_MODIFY, msg));
+ }
+
+ talloc_free(tmp_ctx);
+
+ return ret;
+}
+
static int replmd_extended(struct ldb_module *module, struct ldb_request *req)
{
if (strcmp(req->op.extended.oid, DSDB_EXTENDED_REPLICATED_OBJECTS_OID) == 0) {
return ldb_next_request(module, req);
}
+
+/*
+ we hook into the transaction operations to allow us to
+ perform the linked attribute updates at the end of the whole
+ transaction. This allows a forward linked attribute to be created
+ before the object is created. During a vampire, w2k8 sends us linked
+ attributes before the objects they are part of.
+ */
+static int replmd_start_transaction(struct ldb_module *module)
+{
+ /* create our private structure for this transaction */
+ int i;
+ struct replmd_private *replmd_private = talloc_get_type(ldb_module_get_private(module),
+ struct replmd_private);
+ talloc_free(replmd_private->la_list);
+ replmd_private->la_list = NULL;
+
+ for (i=0; i<replmd_private->num_ncs; i++) {
+ replmd_private->ncs[i].mod_usn = 0;
+ }
+
+ return ldb_next_start_trans(module);
+}
+
+/*
+ on prepare commit we loop over our queued la_context structures and
+ apply each of them
+ */
+static int replmd_prepare_commit(struct ldb_module *module)
+{
+ struct replmd_private *replmd_private =
+ talloc_get_type(ldb_module_get_private(module), struct replmd_private);
+ struct la_entry *la, *prev;
+ int ret;
+
+ /* walk the list backwards, to do the first entry first, as we
+ * added the entries with DLIST_ADD() which puts them at the
+ * start of the list */
+ for (la = replmd_private->la_list; la && la->next; la=la->next) ;
+
+ for (; la; la=prev) {
+ prev = la->prev;
+ DLIST_REMOVE(replmd_private->la_list, la);
+ ret = replmd_process_linked_attribute(module, la);
+ talloc_free(la);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+ }
+
+ talloc_free(replmd_private->la_list);
+ replmd_private->la_list = NULL;
+
+ /* possibly change @REPLCHANGED */
+ ret = replmd_notify_store(module);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+
+ return ldb_next_prepare_commit(module);
+}
+
+static int replmd_del_transaction(struct ldb_module *module)
+{
+ struct replmd_private *replmd_private =
+ talloc_get_type(ldb_module_get_private(module), struct replmd_private);
+ talloc_free(replmd_private->la_list);
+ replmd_private->la_list = NULL;
+ return ldb_next_del_trans(module);
+}
+
+
_PUBLIC_ const struct ldb_module_ops ldb_repl_meta_data_module_ops = {
.name = "repl_meta_data",
- .add = replmd_add,
- .modify = replmd_modify,
- .extended = replmd_extended,
+ .init_context = replmd_init,
+ .add = replmd_add,
+ .modify = replmd_modify,
+ .extended = replmd_extended,
+ .start_transaction = replmd_start_transaction,
+ .prepare_commit = replmd_prepare_commit,
+ .del_transaction = replmd_del_transaction,
};
git.samba.org / ira / wip.git / blobdiff