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-rw-r--r--source4/dsdb/samdb/ldb_modules/objectclass.c26
1 files changed, 26 insertions, 0 deletions
diff --git a/source4/dsdb/samdb/ldb_modules/objectclass.c b/source4/dsdb/samdb/ldb_modules/objectclass.c
index e5769a63dd..4cbb1897fe 100644
--- a/source4/dsdb/samdb/ldb_modules/objectclass.c
+++ b/source4/dsdb/samdb/ldb_modules/objectclass.c
@@ -360,6 +360,8 @@ static int objectclass_add(struct ldb_module *module, struct ldb_request *req)
struct ldb_request *search_req;
struct oc_context *ac;
struct ldb_dn *parent_dn;
+ const struct ldb_val *val;
+ char *value;
int ret;
static const char * const parent_attrs[] = { "objectGUID", "objectClass", NULL };
@@ -372,6 +374,30 @@ static int objectclass_add(struct ldb_module *module, struct ldb_request *req)
return ldb_next_request(module, req);
}
+ /* An add operation on the root basedn has a special handling when the
+ * relax control isn't specified. */
+ if (ldb_dn_compare(ldb_get_root_basedn(ldb), req->op.add.message->dn) == 0) {
+ if (ldb_request_get_control(req,
+ LDB_CONTROL_RELAX_OID) == NULL) {
+ /* When we are trying to readd the root basedn then
+ * this is denied, but with an interesting mechanism:
+ * there is generated a referral with the last
+ * component value as hostname. */
+ val = ldb_dn_get_component_val(req->op.add.message->dn,
+ ldb_dn_get_comp_num(req->op.add.message->dn) - 1);
+ if (val == NULL) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ value = talloc_asprintf(req, "ldap://%s/%s", val->data,
+ ldb_dn_get_linearized(req->op.add.message->dn));
+ if (value == NULL) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ return ldb_module_send_referral(req, value);
+ }
+ }
+
/* the objectClass must be specified on add */
if (ldb_msg_find_element(req->op.add.message,
"objectClass") == NULL) {