uri: allow leading dots, but explicitly exclude "." and ".."

Dots at the beginning of an URI segment are ok, as long as the special
names "." and ".." are not used.

1 files changed, 4 insertions, 1 deletions

diff --git a/src/uri.c b/src/uri.c
index 49f2b7f5..fc443996 100644
--- a/src/uri.c
+++ b/src/uri.c
@@ -51,7 +51,10 @@ verify_uri_segment(const char *p)
 {
 	const char *q;
 
-	if (*p == 0 || *p == '/' || *p == '.')
+	unsigned dots = 0;
+	while (*p == '.')
+		++p;
+	if (dots <= 2 && (*p == 0 || *p == '/'))
 		return NULL;
 
 	q = strchr(p + 1, '/');