protected function _processFiles()
    {
        if (isset($_FILES['myfile']['name'])) {
            // process all files
            foreach ($_FILES['myfile']['name'] as $key => $value) {
                $aSource = $_FILES['myfile']['tmp_name'];
                $sSource = $aSource[$key];
                $value = strtolower($value);
                // add type to name
                $aFilename = explode(".", $value);

                //hack?

                $aBadFiles = ["php", 'php4', 'php5', "jsp", "cgi", "cmf", "exe"];

                if (in_array($aFilename[1], $aBadFiles)) {
                    \OxidEsales\Eshop\Core\Registry::getUtils()->showMessageAndExit("File didn't pass our allowed files filter.");
                }

                //reading SQL dump file
                if (filesize($sSource) > 0) {
                    $rHandle = fopen($sSource, "r");
                    $sContents = fread($rHandle, filesize($sSource));
                    fclose($rHandle);

                    //reading only one SQL dump file
                    return $sContents;
                }

                return;
            }
        }

        return;
    }