9.5/_maintenance_mode_8php_source.html

<?php

declare(strict_types = 1);

namespace ‪TYPO3\CMS\Frontend\Middleware;


/*

 * This file is part of the TYPO3 CMS project.

 *

 * It is free software; you can redistribute it and/or modify it under

 * the terms of the GNU General Public License, either version 2

 * of the License, or any later version.

 *

 * For the full copyright and license information, please read the

 * LICENSE.txt file that was distributed with this source code.

 *

 * The TYPO3 project - inspiring people to share!

 */


use Psr\Http\Message\ResponseInterface;

use Psr\Http\Message\ServerRequestInterface;

use Psr\Http\Server\MiddlewareInterface;

use Psr\Http\Server\RequestHandlerInterface;

use ‪TYPO3\CMS\Core\Utility\GeneralUtility;

use ‪TYPO3\CMS\Frontend\Controller\ErrorController;


class ‪MaintenanceMode implements MiddlewareInterface

{

    public function ‪process(ServerRequestInterface $request, RequestHandlerInterface $handler): ResponseInterface

    {

        if (‪$GLOBALS['TYPO3_CONF_VARS']['FE']['pageUnavailable_force']

            && !GeneralUtility::cmpIP(

                $request->getAttribute('normalizedParams')->getRemoteAddress(),

                ‪$GLOBALS['TYPO3_CONF_VARS']['SYS']['devIPmask']

            )

        ) {

            return GeneralUtility::makeInstance(ErrorController::class)->unavailableAction($request, 'This page is temporarily unavailable.');

        }

        // Continue the regular stack if no maintenance mode is active

        return $handler->handle($request);

    }

}