From 8560212cbb078b992a5cb3f2fa50bf845442cbc6 Mon Sep 17 00:00:00 2001
From: Ferry Huberts <ferry.huberts@pelagic.nl>
Date: Thu, 8 Dec 2016 08:49:08 +0100
Subject: [PATCH] info: protect stripTrailingSlashes against invalid input and
 zero length

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>
---
 lib/info/olsrd_info.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/info/olsrd_info.c b/lib/info/olsrd_info.c
index fc1597a3..e956866f 100644
--- a/lib/info/olsrd_info.c
+++ b/lib/info/olsrd_info.c
@@ -606,6 +606,10 @@ static char * stripEOLs(char * requ, size_t *len) {
 }
 
 static char * stripTrailingSlashes(char * requ, size_t *len) {
+  if (!requ || !len || !*len) {
+    return requ;
+  }
+
   while ((requ[*len - 1] == '/') && (requ[*len - 1] != '\0')) {
     *len = *len - 1;
     requ[*len] = '\0';
-- 
2.20.1