PHP MADNESS

gistfile1.txt

$url_parts = explode('/', trim($_SERVER['REDIRECT_URL'], '/'));
if ($url_parts[0] != $lang) {

    // Bug 619404 Quickly redirect homepage
    if ($_SERVER['REQUEST_URI'] == '/') {
        $_SERVER['REQUEST_URI'] = '/firefox/';
    }
    
    $parsed_url = parse_url($_SERVER['REQUEST_URI']);
    // This matches both / and /firefox because of the above code
    if (rtrim($parsed_url['path'], '/') == '/firefox') {
        $is_mobile_redirected = FALSE;
        $ua = $_SERVER['HTTP_USER_AGENT'];
        $ua_nocase = strtolower($ua);

        // Redirect mobile devices (Android, Maemo)
        if (preg_match(':(Android|Maemo|Fennec|Linux armv7l):', $ua)) {
            if (isset($_GET['mobile_no_redirect']) || isset($_COOKIE['mobile_no_redirect'])) {
                setcookie('mobile_no_redirect', '1', 0, '/');
            } else {
                $_SERVER['REQUEST_URI'] = '/m/';
                $is_mobile_redirected = TRUE;
            }
        }

        // Same with iOS devices
        if (strpos($ua_nocase, 'iphone') !== FALSE &&
            strpos($ua_nocase, 'ipad') === FALSE) {

            if (isset($_GET['mobile_no_redirect']) || isset($_COOKIE['mobile_no_redirect'])) {
                setcookie('mobile_no_redirect', '1', 0, '/');
            } else {
                $_SERVER['REQUEST_URI'] = '/m/ios';
                $is_mobile_redirected = TRUE;
            }                
        }            

        if (!$is_mobile_redirected) {
            // Bug 629407 Redirect to user-specific pages
            // This is also implemented in .htaccess, but we do it here
            // to redirect the user only once
            if (preg_match('/Firefox\/(7|8|9|10)/', $ua)) {
                $_SERVER['REQUEST_URI'] = '/firefox/fx/';
            }
            else {
                $_SERVER['REQUEST_URI'] = '/firefox/new/';
            }
        }
        
        if (isset($parsed_url['query']) && $parsed_url['query'] !== '') {
            $_SERVER['REQUEST_URI'] .= '?' . $parsed_url['query'];
        }
    }
    
    header( "HTTP/1.1 301 Moved Permanently" ); 
    header("Location: {$config['url_scheme']}://{$config['server_name']}/{$lang}{$_SERVER['REQUEST_URI']}");
    header('Pragma: no-cache');
    header('Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0, private');
    header("Vary: User-Agent, Accept-Language");
    exit;
}