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msd2/tracking/piwik/core/Http/Router.php

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+<?php
+/**
+ * Piwik - free/libre analytics platform
+ *
+ * @link http://piwik.org
+ * @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
+ */
+
+namespace Piwik\Http;
+
+use Piwik\Url;
+
+/**
+ * Router
+ */
+class Router
+{
+    /**
+     * Filters some malformed URL by suggesting to redirect them.
+     *
+     * E.g. /index.php/.html?... can be interpreted as HTML by old browsers
+     * even though the Content-Type says JSON.
+     * @link https://github.com/piwik/piwik/issues/6156
+     *
+     * @param string $url The URL to filter.
+     *
+     * @return string|null If not null, then the application should redirect to that URL.
+     */
+    public function filterUrl($url)
+    {
+        $path = parse_url($url, PHP_URL_PATH);
+
+        if (strpos($path, 'index.php/') !== false) {
+            return preg_replace('#index\.php/([^\?]*)#', 'index.php', $url, 1);
+        }
+
+        return null;
+    }
+}