1 files changed, 19 insertions, 0 deletions
diff --git a/src/rule.c b/src/rule.c
index 42ba37f4..2cf024a4 100644
--- a/src/rule.c
+++ b/src/rule.c
@@ -190,6 +190,25 @@ struct symbol *symbol_lookup(const struct scope *scope, const char *identifier)
 	return NULL;
 }
 
+static const char *chain_type_str_array[] = {
+	"filter",
+	"nat",
+	"route",
+	NULL,
+};
+
+const char *chain_type_name_lookup(const char *name)
+{
+	int i;
+
+	for (i = 0; chain_type_str_array[i]; i++) {
+		if (!strcmp(name, chain_type_str_array[i]))
+			return chain_type_str_array[i];
+	}
+
+	return NULL;
+}
+
 static const char *chain_hookname_str_array[] = {
 	"prerouting",
 	"input",