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-rw-r--r--source4/dsdb/samdb/ldb_modules/repl_meta_data.c389
1 files changed, 239 insertions, 150 deletions
diff --git a/source4/dsdb/samdb/ldb_modules/repl_meta_data.c b/source4/dsdb/samdb/ldb_modules/repl_meta_data.c
index 822ed8868d..95e51d1d8b 100644
--- a/source4/dsdb/samdb/ldb_modules/repl_meta_data.c
+++ b/source4/dsdb/samdb/ldb_modules/repl_meta_data.c
@@ -580,7 +580,9 @@ static void replmd_ldb_message_sort(struct ldb_message *msg,
}
static int replmd_build_la_val(TALLOC_CTX *mem_ctx, struct ldb_val *v, struct dsdb_dn *dsdb_dn,
- const struct GUID *invocation_id, uint64_t seq_num, time_t t);
+ const struct GUID *invocation_id, uint64_t seq_num,
+ uint64_t local_usn, NTTIME nttime, bool deleted);
+
/*
fix up linked attributes in replmd_add.
@@ -595,6 +597,9 @@ static int replmd_add_fix_la(struct ldb_module *module, struct ldb_message_eleme
TALLOC_CTX *tmp_ctx = talloc_new(el->values);
struct ldb_context *ldb = ldb_module_get_ctx(module);
struct dsdb_schema *schema = dsdb_get_schema(ldb);
+ NTTIME now;
+
+ unix_to_nt_time(&now, t);
for (i=0; i<el->num_values; i++) {
struct ldb_val *v = &el->values[i];
@@ -603,7 +608,8 @@ static int replmd_add_fix_la(struct ldb_module *module, struct ldb_message_eleme
NTSTATUS status;
int ret;
- ret = replmd_build_la_val(el->values, v, dsdb_dn, invocationId, seq_num, t);
+ ret = replmd_build_la_val(el->values, v, dsdb_dn, invocationId,
+ seq_num, seq_num, now, false);
if (ret != LDB_SUCCESS) {
talloc_free(tmp_ctx);
return ret;
@@ -611,7 +617,7 @@ static int replmd_add_fix_la(struct ldb_module *module, struct ldb_message_eleme
/* note that the DN already has the extended
components from the extended_dn_store module */
- status = dsdb_get_extended_dn_guid(dsdb_dn->dn, &target_guid);
+ status = dsdb_get_extended_dn_guid(dsdb_dn->dn, &target_guid, "GUID");
if (!NT_STATUS_IS_OK(status)) {
talloc_free(tmp_ctx);
return LDB_ERR_OPERATIONS_ERROR;
@@ -1147,7 +1153,7 @@ static int get_parsed_dns(struct ldb_module *module, TALLOC_CTX *mem_ctx,
return LDB_ERR_OPERATIONS_ERROR;
}
- status = dsdb_get_extended_dn_guid(dn, p->guid);
+ status = dsdb_get_extended_dn_guid(dn, p->guid, "GUID");
if (NT_STATUS_EQUAL(status, NT_STATUS_OBJECT_NAME_NOT_FOUND)) {
/* we got a DN without a GUID - go find the GUID */
int ret = dsdb_find_guid_by_dn(ldb, dn, p->guid);
@@ -1181,21 +1187,20 @@ static int get_parsed_dns(struct ldb_module *module, TALLOC_CTX *mem_ctx,
RMD_VERSION = version
*/
static int replmd_build_la_val(TALLOC_CTX *mem_ctx, struct ldb_val *v, struct dsdb_dn *dsdb_dn,
- const struct GUID *invocation_id, uint64_t seq_num, time_t t)
+ const struct GUID *invocation_id, uint64_t seq_num,
+ uint64_t local_usn, NTTIME nttime, bool deleted)
{
struct ldb_dn *dn = dsdb_dn->dn;
- NTTIME now;
const char *tstring, *usn_string;
struct ldb_val tval;
struct ldb_val iid;
- struct ldb_val usnv;
+ struct ldb_val usnv, local_usnv;
struct ldb_val vers;
NTSTATUS status;
int ret;
const char *dnstring;
- unix_to_nt_time(&now, t);
- tstring = talloc_asprintf(mem_ctx, "%llu", (unsigned long long)now);
+ tstring = talloc_asprintf(mem_ctx, "%llu", (unsigned long long)nttime);
if (!tstring) {
return LDB_ERR_OPERATIONS_ERROR;
}
@@ -1207,6 +1212,12 @@ static int replmd_build_la_val(TALLOC_CTX *mem_ctx, struct ldb_val *v, struct ds
}
usnv = data_blob_string_const(usn_string);
+ usn_string = talloc_asprintf(mem_ctx, "%llu", (unsigned long long)local_usn);
+ if (!usn_string) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ local_usnv = data_blob_string_const(usn_string);
+
vers = data_blob_string_const("0");
status = GUID_to_ndr_blob(invocation_id, dn, &iid);
@@ -1214,7 +1225,13 @@ static int replmd_build_la_val(TALLOC_CTX *mem_ctx, struct ldb_val *v, struct ds
return LDB_ERR_OPERATIONS_ERROR;
}
- ret = ldb_dn_set_extended_component(dn, "DELETED", NULL);
+ if (deleted) {
+ struct ldb_val dv;
+ dv = data_blob_string_const("1");
+ ret = ldb_dn_set_extended_component(dn, "DELETED", &dv);
+ } else {
+ ret = ldb_dn_set_extended_component(dn, "DELETED", NULL);
+ }
if (ret != LDB_SUCCESS) return ret;
ret = ldb_dn_set_extended_component(dn, "RMD_ADDTIME", &tval);
if (ret != LDB_SUCCESS) return ret;
@@ -1222,7 +1239,7 @@ static int replmd_build_la_val(TALLOC_CTX *mem_ctx, struct ldb_val *v, struct ds
if (ret != LDB_SUCCESS) return ret;
ret = ldb_dn_set_extended_component(dn, "RMD_CHANGETIME", &tval);
if (ret != LDB_SUCCESS) return ret;
- ret = ldb_dn_set_extended_component(dn, "RMD_LOCAL_USN", &usnv);
+ ret = ldb_dn_set_extended_component(dn, "RMD_LOCAL_USN", &local_usnv);
if (ret != LDB_SUCCESS) return ret;
ret = ldb_dn_set_extended_component(dn, "RMD_ORIGINATING_USN", &usnv);
if (ret != LDB_SUCCESS) return ret;
@@ -1246,22 +1263,20 @@ static int replmd_build_la_val(TALLOC_CTX *mem_ctx, struct ldb_val *v, struct ds
*/
static int replmd_update_la_val(TALLOC_CTX *mem_ctx, struct ldb_val *v, struct dsdb_dn *dsdb_dn,
struct dsdb_dn *old_dsdb_dn, const struct GUID *invocation_id,
- uint64_t seq_num, time_t t, bool deleted)
+ uint64_t seq_num, uint64_t local_usn, NTTIME nttime, bool deleted)
{
struct ldb_dn *dn = dsdb_dn->dn;
- NTTIME now;
const char *tstring, *usn_string;
struct ldb_val tval;
struct ldb_val iid;
- struct ldb_val usnv;
+ struct ldb_val usnv, local_usnv;
struct ldb_val vers;
const struct ldb_val *old_addtime, *old_version;
NTSTATUS status;
int ret;
const char *dnstring;
- unix_to_nt_time(&now, t);
- tstring = talloc_asprintf(mem_ctx, "%llu", (unsigned long long)now);
+ tstring = talloc_asprintf(mem_ctx, "%llu", (unsigned long long)nttime);
if (!tstring) {
return LDB_ERR_OPERATIONS_ERROR;
}
@@ -1273,6 +1288,12 @@ static int replmd_update_la_val(TALLOC_CTX *mem_ctx, struct ldb_val *v, struct d
}
usnv = data_blob_string_const(usn_string);
+ usn_string = talloc_asprintf(mem_ctx, "%llu", (unsigned long long)local_usn);
+ if (!usn_string) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ local_usnv = data_blob_string_const(usn_string);
+
status = GUID_to_ndr_blob(invocation_id, dn, &iid);
if (!NT_STATUS_IS_OK(status)) {
return LDB_ERR_OPERATIONS_ERROR;
@@ -1309,7 +1330,7 @@ static int replmd_update_la_val(TALLOC_CTX *mem_ctx, struct ldb_val *v, struct d
ret = ldb_dn_set_extended_component(dn, "RMD_ORIGINATING_USN", &usnv);
if (ret != LDB_SUCCESS) return ret;
- ret = ldb_dn_set_extended_component(dn, "RMD_LOCAL_USN", &usnv);
+ ret = ldb_dn_set_extended_component(dn, "RMD_LOCAL_USN", &local_usnv);
if (ret != LDB_SUCCESS) return ret;
/* increase the version by 1 */
@@ -1360,6 +1381,9 @@ static int replmd_modify_la_add(struct ldb_module *module,
unsigned old_num_values = old_el?old_el->num_values:0;
const struct GUID *invocation_id;
struct ldb_context *ldb = ldb_module_get_ctx(module);
+ NTTIME now;
+
+ unix_to_nt_time(&now, t);
ret = get_parsed_dns(module, tmp_ctx, el, &dns, schema_attr->syntax->ldap_oid);
if (ret != LDB_SUCCESS) {
@@ -1390,7 +1414,7 @@ static int replmd_modify_la_add(struct ldb_module *module,
return LDB_ERR_OPERATIONS_ERROR;
}
ret = replmd_build_la_val(new_values, &new_values[num_new_values], dns[i].dsdb_dn,
- invocation_id, seq_num, t);
+ invocation_id, seq_num, seq_num, now, false);
if (ret != LDB_SUCCESS) {
talloc_free(tmp_ctx);
return ret;
@@ -1408,7 +1432,7 @@ static int replmd_modify_la_add(struct ldb_module *module,
return LDB_ERR_ATTRIBUTE_OR_VALUE_EXISTS;
}
ret = replmd_update_la_val(old_el->values, p->v, dns[i].dsdb_dn, p->dsdb_dn,
- invocation_id, seq_num, t, false);
+ invocation_id, seq_num, seq_num, now, false);
if (ret != LDB_SUCCESS) {
talloc_free(tmp_ctx);
return ret;
@@ -1466,6 +1490,9 @@ static int replmd_modify_la_delete(struct ldb_module *module,
int ret;
const struct GUID *invocation_id;
struct ldb_context *ldb = ldb_module_get_ctx(module);
+ NTTIME now;
+
+ unix_to_nt_time(&now, t);
/* check if there is nothing to delete */
if ((!old_el || old_el->num_values == 0) &&
@@ -1532,7 +1559,7 @@ static int replmd_modify_la_delete(struct ldb_module *module,
if (v != NULL) continue;
ret = replmd_update_la_val(old_el->values, p->v, p->dsdb_dn, p->dsdb_dn,
- invocation_id, seq_num, t, true);
+ invocation_id, seq_num, seq_num, now, true);
if (ret != LDB_SUCCESS) {
talloc_free(tmp_ctx);
return ret;
@@ -1579,6 +1606,9 @@ static int replmd_modify_la_replace(struct ldb_module *module,
struct ldb_val *new_values = NULL;
uint32_t num_new_values = 0;
unsigned old_num_values = old_el?old_el->num_values:0;
+ NTTIME now;
+
+ unix_to_nt_time(&now, t);
/* check if there is nothing to replace */
if ((!old_el || old_el->num_values == 0) &&
@@ -1625,7 +1655,7 @@ static int replmd_modify_la_replace(struct ldb_module *module,
}
ret = replmd_update_la_val(old_el->values, old_p->v, old_p->dsdb_dn, old_p->dsdb_dn,
- invocation_id, seq_num, t, true);
+ invocation_id, seq_num, seq_num, now, true);
if (ret != LDB_SUCCESS) {
talloc_free(tmp_ctx);
return ret;
@@ -1644,7 +1674,7 @@ static int replmd_modify_la_replace(struct ldb_module *module,
/* update in place */
ret = replmd_update_la_val(old_el->values, old_p->v, old_p->dsdb_dn,
old_p->dsdb_dn, invocation_id,
- seq_num, t, false);
+ seq_num, seq_num, now, false);
if (ret != LDB_SUCCESS) {
talloc_free(tmp_ctx);
return ret;
@@ -1659,7 +1689,7 @@ static int replmd_modify_la_replace(struct ldb_module *module,
return LDB_ERR_OPERATIONS_ERROR;
}
ret = replmd_build_la_val(new_values, &new_values[num_new_values], dns[i].dsdb_dn,
- invocation_id, seq_num, t);
+ invocation_id, seq_num, seq_num, now, false);
if (ret != LDB_SUCCESS) {
talloc_free(tmp_ctx);
return ret;
@@ -2027,7 +2057,7 @@ static int replmd_delete_remove_link(struct ldb_module *module,
return LDB_ERR_OPERATIONS_ERROR;
}
- status = dsdb_get_extended_dn_guid(dsdb_dn->dn, &guid2);
+ status = dsdb_get_extended_dn_guid(dsdb_dn->dn, &guid2, "GUID");
if (!NT_STATUS_IS_OK(status)) {
talloc_free(tmp_ctx);
return LDB_ERR_OPERATIONS_ERROR;
@@ -2188,7 +2218,8 @@ static int replmd_delete(struct ldb_module *module, struct ldb_request *req)
/* we need the storage form of the parent GUID */
ret = dsdb_module_search_dn(module, tmp_ctx, &parent_res,
ldb_dn_get_parent(tmp_ctx, old_dn), NULL,
- DSDB_SEARCH_SHOW_DN_IN_STORAGE_FORMAT);
+ DSDB_SEARCH_SHOW_DN_IN_STORAGE_FORMAT |
+ DSDB_SEARCH_REVEAL_INTERNALS);
if (ret != LDB_SUCCESS) {
talloc_free(tmp_ctx);
return ret;
@@ -2398,25 +2429,38 @@ static int replmd_replicated_apply_add(struct replmd_replicated_request *ar)
return ldb_next_request(ar->module, change_req);
}
-static int replmd_replPropertyMetaData1_conflict_compare(struct replPropertyMetaData1 *m1,
- struct replPropertyMetaData1 *m2)
+/*
+ return true if an update is newer than an existing entry
+ see section 5.11 of MS-ADTS
+*/
+static bool replmd_update_is_newer(const struct GUID *current_invocation_id,
+ const struct GUID *update_invocation_id,
+ uint32_t current_version,
+ uint32_t update_version,
+ NTTIME current_change_time,
+ NTTIME update_change_time)
{
- int ret;
-
- if (m1->version != m2->version) {
- return m1->version - m2->version;
+ if (update_version != current_version) {
+ return update_version > current_version;
}
-
- if (m1->originating_change_time != m2->originating_change_time) {
- return m1->originating_change_time - m2->originating_change_time;
+ if (update_change_time > current_change_time) {
+ return true;
}
-
- ret = GUID_compare(&m1->originating_invocation_id, &m2->originating_invocation_id);
- if (ret != 0) {
- return ret;
+ if (update_change_time == current_change_time) {
+ return GUID_compare(update_invocation_id, current_invocation_id) > 0;
}
+ return false;
+}
- return m1->originating_usn - m2->originating_usn;
+static bool replmd_replPropertyMetaData1_is_newer(struct replPropertyMetaData1 *cur_m,
+ struct replPropertyMetaData1 *new_m)
+{
+ return replmd_update_is_newer(&cur_m->originating_invocation_id,
+ &new_m->originating_invocation_id,
+ cur_m->version,
+ new_m->version,
+ cur_m->originating_change_time,
+ new_m->originating_change_time);
}
static int replmd_replicated_apply_merge(struct replmd_replicated_request *ar)
@@ -2494,21 +2538,26 @@ static int replmd_replicated_apply_merge(struct replmd_replicated_request *ar)
bool found = false;
for (j=0; j < ni; j++) {
- int cmp;
+ bool cmp;
if (rmd->ctr.ctr1.array[i].attid != nmd.ctr.ctr1.array[j].attid) {
continue;
}
- cmp = replmd_replPropertyMetaData1_conflict_compare(&rmd->ctr.ctr1.array[i],
- &nmd.ctr.ctr1.array[j]);
- if (cmp > 0) {
+ cmp = replmd_replPropertyMetaData1_is_newer(&nmd.ctr.ctr1.array[j],
+ &rmd->ctr.ctr1.array[i]);
+ if (cmp) {
/* replace the entry */
nmd.ctr.ctr1.array[j] = rmd->ctr.ctr1.array[i];
found = true;
break;
}
+ DEBUG(1,("Discarding older DRS attribute update to %s on %s from %s\n",
+ msg->elements[i-removed_attrs].name,
+ ldb_dn_get_linearized(msg->dn),
+ GUID_string(ar, &rmd->ctr.ctr1.array[i].originating_invocation_id)));
+
/* we don't want to apply this change so remove the attribute */
ldb_msg_remove_element(msg, &msg->elements[i-removed_attrs]);
removed_attrs++;
@@ -3210,21 +3259,23 @@ static int replmd_process_linked_attribute(struct ldb_module *module,
struct drsuapi_DsReplicaLinkedAttribute *la = la_entry->la;
struct ldb_context *ldb = ldb_module_get_ctx(module);
struct dsdb_schema *schema = dsdb_get_schema(ldb);
- struct drsuapi_DsReplicaObjectIdentifier3 target;
struct ldb_message *msg;
TALLOC_CTX *tmp_ctx = talloc_new(la_entry);
- struct ldb_request *mod_req;
int ret;
const struct dsdb_attribute *attr;
- struct ldb_dn *target_dn;
struct dsdb_dn *dsdb_dn;
uint64_t seq_num = 0;
struct drsuapi_DsReplicaAttribute drs;
struct drsuapi_DsAttributeValue val;
- struct ldb_message_element el;
- const struct ldb_val *guid;
+ struct ldb_message_element new_el, *old_el;
WERROR status;
time_t t = time(NULL);
+ struct ldb_result *res;
+ const char *attrs[2];
+ struct parsed_dn *pdn_list, *pdn;
+ struct GUID guid;
+ NTSTATUS ntstatus;
+ bool active = (la->flags & DRSUAPI_DS_LINKED_ATTRIBUTE_FLAG_ACTIVE)?true:false;
drs.value_ctr.num_values = 1;
drs.value_ctr.values = &val;
@@ -3273,153 +3324,191 @@ linked_attributes[0]:
return LDB_ERR_OPERATIONS_ERROR;
}
- status = attr->syntax->drsuapi_to_ldb(ldb, schema, attr, &drs, tmp_ctx, &el);
-
- /* 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;
- }
+ attrs[0] = attr->lDAPDisplayName;
+ attrs[1] = NULL;
- ret = dsdb_find_dn_by_guid(ldb, tmp_ctx,
- GUID_string(tmp_ctx, &la->identifier->guid), &msg->dn);
+ /* get the existing message from the db for the object with
+ this GUID, returning attribute being modified. We will then
+ use this msg as the basis for a modify call */
+ ret = dsdb_module_search(module, tmp_ctx, &res, NULL, LDB_SCOPE_SUBTREE, attrs,
+ DSDB_SEARCH_SEARCH_ALL_PARTITIONS |
+ DSDB_SEARCH_SHOW_DELETED |
+ DSDB_SEARCH_SHOW_DN_IN_STORAGE_FORMAT |
+ DSDB_SEARCH_REVEAL_INTERNALS,
+ "objectGUID=%s", GUID_string(tmp_ctx, &la->identifier->guid));
if (ret != LDB_SUCCESS) {
talloc_free(tmp_ctx);
return ret;
}
+ if (res->count != 1) {
+ ldb_asprintf_errstring(ldb, "DRS linked attribute for GUID %s - DN not found",
+ GUID_string(tmp_ctx, &la->identifier->guid));
+ talloc_free(tmp_ctx);
+ return LDB_ERR_NO_SUCH_OBJECT;
+ }
+ msg = res->msgs[0];
- el.name = attr->lDAPDisplayName;
- if (la->flags & DRSUAPI_DS_LINKED_ATTRIBUTE_FLAG_ACTIVE) {
- ret = ldb_msg_add(msg, &el, LDB_FLAG_MOD_ADD);
+ if (msg->num_elements == 0) {
+ ret = ldb_msg_add_empty(msg, attr->lDAPDisplayName, LDB_FLAG_MOD_REPLACE, &old_el);
+ if (ret != LDB_SUCCESS) {
+ ldb_module_oom(module);
+ talloc_free(tmp_ctx);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
} else {
- ret = ldb_msg_add(msg, &el, LDB_FLAG_MOD_DELETE);
+ old_el = &msg->elements[0];
+ old_el->flags = LDB_FLAG_MOD_REPLACE;
}
+
+ /* parse the existing links */
+ ret = get_parsed_dns(module, tmp_ctx, old_el, &pdn_list, attr->syntax->ldap_oid);
if (ret != LDB_SUCCESS) {
talloc_free(tmp_ctx);
return ret;
}
- dsdb_dn = dsdb_dn_parse(tmp_ctx, ldb, &el.values[0], attr->syntax->ldap_oid);
- if (!dsdb_dn) {
- DEBUG(0,(__location__ ": Failed to parse just-generated DN\n"));
- talloc_free(tmp_ctx);
- return LDB_ERR_INVALID_DN_SYNTAX;
+ status = attr->syntax->drsuapi_to_ldb(ldb, schema, attr, &drs, tmp_ctx, &new_el);
+ if (!W_ERROR_IS_OK(status)) {
+ ldb_asprintf_errstring(ldb, "Failed to parsed linked attribute blob for %s on %s\n",
+ old_el->name, ldb_dn_get_linearized(msg->dn));
+ return LDB_ERR_OPERATIONS_ERROR;
}
- guid = ldb_dn_get_extended_component(dsdb_dn->dn, "GUID");
- if (!guid) {
- DEBUG(0,(__location__ ": Failed to parse GUID from just-generated DN\n"));
- talloc_free(tmp_ctx);
- return LDB_ERR_INVALID_DN_SYNTAX;
+ if (new_el.num_values != 1) {
+ ldb_asprintf_errstring(ldb, "Failed to find value in linked attribute blob for %s on %s\n",
+ old_el->name, ldb_dn_get_linearized(msg->dn));
+ return LDB_ERR_OPERATIONS_ERROR;
}
- ret = dsdb_find_dn_by_guid(ldb, tmp_ctx, ldb_binary_encode(tmp_ctx, *guid), &target_dn);
- if (ret != LDB_SUCCESS) {
- /* If this proves to be a problem in the future, then
- * just remove the return - perhaps we can just use
- * the details the replication peer supplied */
-
- DEBUG(0,(__location__ ": Failed to map GUID %s to DN\n", GUID_string(tmp_ctx, &target.guid)));
- talloc_free(tmp_ctx);
+ dsdb_dn = dsdb_dn_parse(tmp_ctx, ldb, &new_el.values[0], attr->syntax->ldap_oid);
+ if (!dsdb_dn) {
+ ldb_asprintf_errstring(ldb, "Failed to parse DN in linked attribute blob for %s on %s\n",
+ old_el->name, ldb_dn_get_linearized(msg->dn));
return LDB_ERR_OPERATIONS_ERROR;
- } else {
-
- /* Now update with full DN we just found in the DB (including extended components) */
- dsdb_dn->dn = target_dn;
- /* Now make a linearized version, using the original binary components (if any) */
- el.values[0] = data_blob_string_const(dsdb_dn_get_extended_linearized(tmp_ctx, dsdb_dn, 1));
}
- ret = replmd_update_rpmd(module, schema, msg, &seq_num, t);
- if (ret != LDB_SUCCESS) {
- talloc_free(tmp_ctx);
- return ret;
+ ntstatus = dsdb_get_extended_dn_guid(dsdb_dn->dn, &guid, "GUID");
+ if (!NT_STATUS_IS_OK(ntstatus)) {
+ ldb_asprintf_errstring(ldb, "Failed to find GUID in linked attribute blob for %s on %s\n",
+ old_el->name, ldb_dn_get_linearized(msg->dn));
+ return LDB_ERR_OPERATIONS_ERROR;
}
- /* 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) {
+ /* see if this link already exists */
+ pdn = parsed_dn_find(pdn_list, old_el->num_values, &guid);
+ if (pdn != NULL) {
+ /* see if this update is newer than what we have already */
+ struct GUID invocation_id = GUID_zero();
+ uint32_t version = 0;
+ NTTIME change_time = 0;
+ bool was_active = ldb_dn_get_extended_component(pdn->dsdb_dn->dn, "DELETED") == NULL;
+
+ dsdb_get_extended_dn_guid(pdn->dsdb_dn->dn, &invocation_id, "RMD_INVOCID");
+ dsdb_get_extended_dn_uint32(pdn->dsdb_dn->dn, &version, "RMD_VERSION");
+ dsdb_get_extended_dn_nttime(pdn->dsdb_dn->dn, &change_time, "RMD_CHANGETIME");
+
+ if (!replmd_update_is_newer(&invocation_id,
+ &la->meta_data.originating_invocation_id,
+ version,
+ la->meta_data.version,
+ change_time,
+ la->meta_data.originating_change_time)) {
+ DEBUG(1,("Discarding older DRS linked attribute update to %s on %s from %s\n",
+ old_el->name, ldb_dn_get_linearized(msg->dn),
+ GUID_string(tmp_ctx, &la->meta_data.originating_invocation_id)));
talloc_free(tmp_ctx);
- return LDB_ERR_OPERATIONS_ERROR;
+ return LDB_SUCCESS;
}
- if (add_uint64_element(msg, "uSNChanged", seq_num) != LDB_SUCCESS) {
+ /* get a seq_num for this change */
+ ret = ldb_sequence_number(ldb, LDB_SEQ_NEXT, &seq_num);
+ if (ret != LDB_SUCCESS) {
talloc_free(tmp_ctx);
- return LDB_ERR_OPERATIONS_ERROR;
+ return ret;
}
- }
-
- 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);
+ if (was_active) {
+ /* remove the existing backlink */
+ ret = replmd_add_backlink(module, schema, &la->identifier->guid, &guid, false, attr, false);
+ if (ret != LDB_SUCCESS) {
+ talloc_free(tmp_ctx);
+ return ret;
+ }
+ }
- /* 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);
- }
+ ret = replmd_update_la_val(tmp_ctx, pdn->v, dsdb_dn, pdn->dsdb_dn,
+ &la->meta_data.originating_invocation_id,
+ la->meta_data.originating_usn, seq_num,
+ la->meta_data.originating_change_time,
+ !active);
+ if (ret != LDB_SUCCESS) {
+ talloc_free(tmp_ctx);
+ return ret;
+ }
- if (ret == LDB_ERR_ATTRIBUTE_OR_VALUE_EXISTS) {
- /* the link destination exists, we need to update it
- * by deleting the old one for the same DN then adding
- * the new one */
- msg->elements = talloc_realloc(msg, msg->elements,
- struct ldb_message_element,
- msg->num_elements+1);
- if (msg->elements == NULL) {
- ldb_oom(ldb);
+ if (active) {
+ /* add the new backlink */
+ ret = replmd_add_backlink(module, schema, &la->identifier->guid, &guid, true, attr, false);
+ if (ret != LDB_SUCCESS) {
+ talloc_free(tmp_ctx);
+ return ret;
+ }
+ }
+ } else {
+ /* get a seq_num for this change */
+ ret = ldb_sequence_number(ldb, LDB_SEQ_NEXT, &seq_num);
+ if (ret != LDB_SUCCESS) {
talloc_free(tmp_ctx);
+ return ret;
+ }
+
+ old_el->values = talloc_realloc(msg->elements, old_el->values,
+ struct ldb_val, old_el->num_values+1);
+ if (!old_el->values) {
+ ldb_module_oom(module);
return LDB_ERR_OPERATIONS_ERROR;
}
- /* this relies on the backend matching the old entry
- only by the DN portion of the extended DN */
- msg->elements[1] = msg->elements[0];
- msg->elements[0].flags = LDB_FLAG_MOD_DELETE;
- msg->num_elements++;
-
- ret = ldb_build_mod_req(&mod_req, ldb, tmp_ctx,
- msg,
- NULL,
- NULL,
- ldb_op_default_callback,
- NULL);
+ old_el->num_values++;
+
+ ret = replmd_build_la_val(tmp_ctx, &old_el->values[old_el->num_values-1], dsdb_dn,
+ &la->meta_data.originating_invocation_id,
+ la->meta_data.originating_usn, seq_num,
+ la->meta_data.originating_change_time,
+ (la->flags & DRSUAPI_DS_LINKED_ATTRIBUTE_FLAG_ACTIVE)?false:true);
if (ret != LDB_SUCCESS) {
talloc_free(tmp_ctx);
return ret;
}
- /* Run the new request */
- ret = ldb_next_request(module, mod_req);
-
- if (ret == LDB_SUCCESS) {
- ret = ldb_wait(mod_req->handle, LDB_WAIT_ALL);
+ if (active) {
+ ret = replmd_add_backlink(module, schema, &la->identifier->guid, &guid,
+ true, attr, false);
+ if (ret != LDB_SUCCESS) {
+ talloc_free(tmp_ctx);
+ return ret;
+ }
}
}
+ /* we only change whenChanged and uSNChanged if the seq_num
+ has changed */
+ if (add_time_element(msg, "whenChanged", t) != LDB_SUCCESS) {
+ talloc_free(tmp_ctx);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ if (add_uint64_element(msg, "uSNChanged", seq_num) != LDB_SUCCESS) {
+ talloc_free(tmp_ctx);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ ret = dsdb_module_modify(module, msg, 0);
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));
- ret = LDB_SUCCESS;
+ talloc_free(tmp_ctx);
+ return ret;
}
talloc_free(tmp_ctx);