full path

docker/start.sh

@@ -20,6 +20,6 @@ _buildConfig() {
     echo ""
 }
 
-_buildConfig > src/inc/config.inc.php
+_buildConfig > /srv/src/config.inc.php
 
 caddy run --config /etc/caddy/Caddyfile

src/.gitignore

@@ -1 +1,2 @@
 vendor/
+config.inc.php

src/example.config.inc.php

@@ -0,0 +1,3 @@
+<?php 
+
+define('URL','http://localhost:8080');

web/index.php

@@ -30,7 +30,12 @@ switch ($url[0]) {
         }
         $ip = getUserIP();
 
-        $viewport = $_REQUEST['viewport'];
+        $viewport = $_REQUEST['viewport'] ?? '1024x768';
+        if (!preg_match('/^\d+x\d+$/', $viewport)) {
+            header('HTTP/1.0 400 Bad Request');
+            echo 'Invalid viewport format. Use WIDTHxHEIGHT (e.g., 1024x768)';
+            exit;
+        }
         $js = $_REQUEST['js'] == 'false' ? false : true;
 
         $serverUrl = 'http://localhost:4444';