3 files changed, 25 insertions, 5 deletions
diff --git a/source4/lib/ldb/include/ldb.h b/source4/lib/ldb/include/ldb.h
index d29aed491a..c53cb7a6bf 100644
--- a/source4/lib/ldb/include/ldb.h
+++ b/source4/lib/ldb/include/ldb.h
@@ -353,6 +353,10 @@ char *ldb_binary_encode_string(TALLOC_CTX *mem_ctx, const char *string);
 */
 typedef int (*ldb_attr_handler_t)(struct ldb_context *, TALLOC_CTX *mem_ctx, const struct ldb_val *, struct ldb_val *);
 typedef int (*ldb_attr_comparison_t)(struct ldb_context *, TALLOC_CTX *mem_ctx, const struct ldb_val *, const struct ldb_val *);
+struct ldb_schema_attribute;
+typedef int (*ldb_attr_operator_t)(struct ldb_context *, enum ldb_parse_op operation,
+				   const struct ldb_schema_attribute *a,
+				   const struct ldb_val *, const struct ldb_val *, bool *matched);
 
 /*
   attribute handler structure
@@ -370,6 +374,7 @@ struct ldb_schema_syntax {
 	ldb_attr_handler_t ldif_write_fn;
 	ldb_attr_handler_t canonicalise_fn;
 	ldb_attr_comparison_t comparison_fn;
+	ldb_attr_operator_t operator_fn;
 };
 
 struct ldb_schema_attribute {
diff --git a/source4/lib/ldb/ldb_tdb/ldb_tdb.c b/source4/lib/ldb/ldb_tdb/ldb_tdb.c
index 7f8342b067..f12bc58f65 100644
--- a/source4/lib/ldb/ldb_tdb/ldb_tdb.c
+++ b/source4/lib/ldb/ldb_tdb/ldb_tdb.c
@@ -553,8 +553,16 @@ static int msg_delete_element(struct ldb_module *module,
 	a = ldb_schema_attribute_by_name(ldb, el->name);
 
 	for (i=0;i<el->num_values;i++) {
-		if (a->syntax->comparison_fn(ldb, ldb,
-					     &el->values[i], val) == 0) {
+		bool matched;
+		if (a->syntax->operator_fn) {
+			ret = a->syntax->operator_fn(ldb, LDB_OP_EQUALITY, a,
+						     &el->values[i], val, &matched);
+			if (ret != LDB_SUCCESS) return ret;
+		} else {
+			matched = (a->syntax->comparison_fn(ldb, ldb,
+							    &el->values[i], val) == 0);
+		}
+		if (matched) {
 			if (el->num_values == 1) {
 				return msg_delete_attribute(module, ldb, msg, name);
 			}
diff --git a/source4/lib/ldb/modules/rdn_name.c b/source4/lib/ldb/modules/rdn_name.c
index 5dc122f254..a0867c0f51 100644
--- a/source4/lib/ldb/modules/rdn_name.c
+++ b/source4/lib/ldb/modules/rdn_name.c
@@ -147,9 +147,16 @@ static int rdn_name_add(struct ldb_module *module, struct ldb_request *req)
 		}
 		/* normalise attribute value */
 		for (i = 0; i < attribute->num_values; i++) {
-			ret = a->syntax->comparison_fn(ldb, msg,
-					&rdn_val, &attribute->values[i]);
-			if (ret == 0) {
+			bool matched;
+			if (a->syntax->operator_fn) {
+				ret = a->syntax->operator_fn(ldb, LDB_OP_EQUALITY, a,
+							     &rdn_val, &attribute->values[i], &matched);
+				if (ret != LDB_SUCCESS) return ret;
+			} else {
+				matched = (a->syntax->comparison_fn(ldb, msg,
+								    &rdn_val, &attribute->values[i]) == 0);
+			}
+			if (matched) {
 				/* overwrite so it matches in case */
 				attribute->values[i] = rdn_val;
 				break;