resolve_ref(): verify that the input refname has the right format

mhagger · gitster · commit 8384d78886ec · 2011-10-05T13:45:31.000-07:00
Signed-off-by: Michael Haggerty &lt;mhagger@alum.mit.edu&gt;
Signed-off-by: Junio C Hamano &lt;gitster@pobox.com&gt;
diff --git 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;
