From b2391abd578bfec04fba2f15480e36717e177221 Mon Sep 17 00:00:00 2001
From: Jafar Akhondali <jafar.akhoondali@gmail.com>
Date: Tue, 30 Jul 2024 18:41:21 +0200
Subject: [PATCH] Block malicious looking requests to prevent path traversal
 attacks.

---
 server.js | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/server.js b/server.js
index 62601c4..88fbe8a 100644
--- a/server.js
+++ b/server.js
@@ -24,6 +24,11 @@ var config = require("./config.js"),
 // static http server
 
 var httpServer = http.createServer(function(request, response) {
+    if (path.normalize(decodeURI(request.url)) !== decodeURI(request.url)) {
+        response.statusCode = 403;
+        response.end();
+        return;
+    }
  
   var uri = url.parse(request.url).pathname
     , filename = path.join(process.cwd(), 'public', uri);