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Diffstat (limited to 'source4/dsdb/samdb/ldb_modules/linked_attributes.c')
-rw-r--r--source4/dsdb/samdb/ldb_modules/linked_attributes.c77
1 files changed, 64 insertions, 13 deletions
diff --git a/source4/dsdb/samdb/ldb_modules/linked_attributes.c b/source4/dsdb/samdb/ldb_modules/linked_attributes.c
index 5ebf4efed4..6e08209bf3 100644
--- a/source4/dsdb/samdb/ldb_modules/linked_attributes.c
+++ b/source4/dsdb/samdb/ldb_modules/linked_attributes.c
@@ -141,7 +141,9 @@ static struct la_context *linked_attributes_init(struct ldb_module *module,
/*
turn a DN into a GUID
*/
-static int la_guid_from_dn(struct la_context *ac, struct ldb_dn *dn, struct GUID *guid)
+static int la_guid_from_dn(struct ldb_module *module,
+ struct ldb_request *parent,
+ struct ldb_dn *dn, struct GUID *guid)
{
NTSTATUS status;
int ret;
@@ -153,10 +155,10 @@ static int la_guid_from_dn(struct la_context *ac, struct ldb_dn *dn, struct GUID
if (!NT_STATUS_EQUAL(status, NT_STATUS_OBJECT_NAME_NOT_FOUND)) {
DEBUG(4,(__location__ ": Unable to parse GUID for dn %s\n",
ldb_dn_get_linearized(dn)));
- return ldb_operr(ldb_module_get_ctx(ac->module));
+ return ldb_operr(ldb_module_get_ctx(module));
}
- ret = dsdb_module_guid_by_dn(ac->module, dn, guid, ac->req);
+ ret = dsdb_module_guid_by_dn(module, dn, guid, parent);
if (ret != LDB_SUCCESS) {
DEBUG(4,(__location__ ": Failed to find GUID for dn %s\n",
ldb_dn_get_linearized(dn)));
@@ -193,7 +195,7 @@ static int la_store_op(struct la_context *ac,
os->op = op;
- ret = la_guid_from_dn(ac, op_dn, &os->guid);
+ ret = la_guid_from_dn(ac->module, ac->req, op_dn, &os->guid);
talloc_free(op_dn);
if (ret == LDB_ERR_NO_SUCH_OBJECT && ac->req->operation == LDB_DELETE) {
/* we are deleting an object, and we've found it has a
@@ -658,6 +660,7 @@ static int linked_attributes_modify(struct ldb_module *module, struct ldb_reques
}
static int linked_attributes_fix_links(struct ldb_module *module,
+ struct GUID self_guid,
struct ldb_dn *old_dn, struct ldb_dn *new_dn,
struct ldb_message_element *el, struct dsdb_schema *schema,
const struct dsdb_attribute *schema_attr,
@@ -684,6 +687,7 @@ static int linked_attributes_fix_links(struct ldb_module *module,
struct ldb_result *res;
struct ldb_message *msg;
struct ldb_message_element *el2;
+ struct GUID link_guid;
dsdb_dn = dsdb_dn_parse(tmp_ctx, ldb, &el->values[i], schema_attr->syntax->ldap_oid);
if (dsdb_dn == NULL) {
@@ -691,17 +695,36 @@ static int linked_attributes_fix_links(struct ldb_module *module,
return LDB_ERR_INVALID_DN_SYNTAX;
}
- ret = dsdb_module_search_dn(module, tmp_ctx, &res, dsdb_dn->dn,
- attrs,
- DSDB_FLAG_NEXT_MODULE |
- DSDB_SEARCH_SHOW_RECYCLED |
- DSDB_SEARCH_SHOW_DN_IN_STORAGE_FORMAT |
- DSDB_SEARCH_REVEAL_INTERNALS, parent);
+ ret = la_guid_from_dn(module, parent, dsdb_dn->dn, &link_guid);
+ if (ret != LDB_SUCCESS) {
+ ldb_asprintf_errstring(ldb, "Linked attribute %s->%s between %s and %s - GUID not found - %s",
+ el->name, target->lDAPDisplayName,
+ ldb_dn_get_linearized(old_dn),
+ ldb_dn_get_linearized(dsdb_dn->dn),
+ ldb_errstring(ldb));
+ talloc_free(tmp_ctx);
+ return ret;
+ }
+
+ /*
+ * 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_FLAG_NEXT_MODULE |
+ DSDB_SEARCH_SEARCH_ALL_PARTITIONS |
+ DSDB_SEARCH_SHOW_RECYCLED |
+ DSDB_SEARCH_SHOW_DN_IN_STORAGE_FORMAT |
+ DSDB_SEARCH_REVEAL_INTERNALS,
+ parent,
+ "objectGUID=%s", GUID_string(tmp_ctx, &link_guid));
if (ret != LDB_SUCCESS) {
- ldb_asprintf_errstring(ldb, "Linked attribute %s->%s between %s and %s - remote not found - %s",
+ ldb_asprintf_errstring(ldb, "Linked attribute %s->%s between %s and %s - target GUID %s not found - %s",
el->name, target->lDAPDisplayName,
ldb_dn_get_linearized(old_dn),
ldb_dn_get_linearized(dsdb_dn->dn),
+ GUID_string(tmp_ctx, &link_guid),
ldb_errstring(ldb));
talloc_free(tmp_ctx);
return ret;
@@ -729,14 +752,34 @@ static int linked_attributes_fix_links(struct ldb_module *module,
/* find our DN in the values */
for (j=0; j<el2->num_values; j++) {
struct dsdb_dn *dsdb_dn2;
+ struct GUID link_guid;
+
dsdb_dn2 = dsdb_dn_parse(msg, ldb, &el2->values[j], target->syntax->ldap_oid);
if (dsdb_dn2 == NULL) {
talloc_free(tmp_ctx);
return LDB_ERR_INVALID_DN_SYNTAX;
}
- if (ldb_dn_compare(old_dn, dsdb_dn2->dn) != 0) {
+
+ ret = la_guid_from_dn(module, parent, dsdb_dn2->dn, &link_guid);
+ if (ret != LDB_SUCCESS) {
+ talloc_free(tmp_ctx);
+ return ret;
+ }
+
+ /*
+ * By comparing using the GUID we ensure that
+ * even if somehow the name has got out of
+ * sync, this rename will fix it.
+ *
+ * If somehow we don't have a GUID on the DN
+ * in the DB, the la_guid_from_dn call will be
+ * more costly, but still give us a GUID.
+ * dbcheck will fix this if run.
+ */
+ if (!GUID_equal(&self_guid, &link_guid)) {
continue;
}
+
ret = ldb_dn_update_components(dsdb_dn2->dn, new_dn);
if (ret != LDB_SUCCESS) {
talloc_free(tmp_ctx);
@@ -783,6 +826,8 @@ static int linked_attributes_rename(struct ldb_module *module, struct ldb_reques
struct ldb_context *ldb = ldb_module_get_ctx(module);
struct dsdb_schema *schema;
int ret;
+ struct GUID guid;
+
/*
- load the current msg
- find any linked attributes
@@ -792,6 +837,7 @@ static int linked_attributes_rename(struct ldb_module *module, struct ldb_reques
ret = dsdb_module_search_dn(module, req, &res, req->op.rename.olddn,
NULL,
DSDB_FLAG_NEXT_MODULE |
+ DSDB_SEARCH_SHOW_EXTENDED_DN |
DSDB_SEARCH_SHOW_RECYCLED, req);
if (ret != LDB_SUCCESS) {
return ret;
@@ -804,6 +850,11 @@ static int linked_attributes_rename(struct ldb_module *module, struct ldb_reques
msg = res->msgs[0];
+ ret = la_guid_from_dn(module, req, msg->dn, &guid);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+
for (i=0; i<msg->num_elements; i++) {
struct ldb_message_element *el = &msg->elements[i];
const struct dsdb_attribute *schema_attr
@@ -811,7 +862,7 @@ static int linked_attributes_rename(struct ldb_module *module, struct ldb_reques
if (!schema_attr || schema_attr->linkID == 0) {
continue;
}
- ret = linked_attributes_fix_links(module, msg->dn, req->op.rename.newdn, el,
+ ret = linked_attributes_fix_links(module, guid, msg->dn, req->op.rename.newdn, el,
schema, schema_attr, req);
if (ret != LDB_SUCCESS) {
talloc_free(res);
generated by cgit (git 2.34.1) at 2024-06-30 19:45:46 +0000