9.5/_content_length_response_header_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\Http\NullResponse;

use ‪TYPO3\CMS\Frontend\Controller\TypoScriptFrontendController;


class ‪ContentLengthResponseHeader implements MiddlewareInterface

{


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

    {

        $response = $handler->handle($request);

        if (

            !($response instanceof ‪NullResponse)

            && ‪$GLOBALS['TSFE'] instanceof ‪TypoScriptFrontendController

            && ‪$GLOBALS['TSFE']->isOutputting()) {

            if (

                    (!isset(‪$GLOBALS['TSFE']->config['config']['enableContentLengthHeader']) || ‪$GLOBALS['TSFE']->config['config']['enableContentLengthHeader'])

                    && !‪$GLOBALS['TSFE']->isBackendUserLoggedIn() && !‪$GLOBALS['TYPO3_CONF_VARS']['FE']['debug']

                    && !‪$GLOBALS['TSFE']->config['config']['debug'] && !‪$GLOBALS['TSFE']->doWorkspacePreview()

                ) {

                $response = $response->withHeader('Content-Length', (string)$response->getBody()->getSize());

            }

        }

        return $response;

    }

}