From 8384d78886eca05cae2a4c1bccaee379d76c1e06 Mon Sep 17 00:00:00 2001
From: Michael Haggerty <mhagger@alum.mit.edu>
Date: Thu, 15 Sep 2011 23:10:39 +0200
Subject: [PATCH] resolve_ref(): verify that the input refname has the right
 format

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
---
 refs.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/refs.c b/refs.c
index b05550189..ee3e0cc56 100644
--- a/refs.c
+++ b/refs.c
@@ -504,6 +504,9 @@ const char *resolve_ref(const char *ref, unsigned char *sha1, int reading, int *
 	if (flag)
 		*flag = 0;
 
+	if (check_refname_format(ref, REFNAME_ALLOW_ONELEVEL))
+		return NULL;
+
 	for (;;) {
 		char path[PATH_MAX];
 		struct stat st;
-- 
2.30.2