61 lines
1.9 KiB
PHP
61 lines
1.9 KiB
PHP
<?php
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declare(strict_types = 1);
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namespace TYPO3\CMS\Backend\Middleware;
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/*
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* This file is part of the TYPO3 CMS project.
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*
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* It is free software; you can redistribute it and/or modify it under
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* the terms of the GNU General Public License, either version 2
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* of the License, or any later version.
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*
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* For the full copyright and license information, please read the
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* LICENSE.txt file that was distributed with this source code.
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*
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* The TYPO3 project - inspiring people to share!
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*/
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use Psr\Http\Message\ResponseInterface;
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use Psr\Http\Message\ServerRequestInterface;
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use Psr\Http\Server\MiddlewareInterface;
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use Psr\Http\Server\RequestHandlerInterface;
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use TYPO3\CMS\Core\Utility\MathUtility;
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/**
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* Sets up output compression
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*
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* @internal
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*/
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class OutputCompression implements MiddlewareInterface
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{
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/**
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* Clears all output and checks if a compression level is set
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*
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* @param ServerRequestInterface $request
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* @param RequestHandlerInterface $handler
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* @return ResponseInterface
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*/
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public function process(ServerRequestInterface $request, RequestHandlerInterface $handler): ResponseInterface
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{
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// Throw away all output that may have happened during bootstrapping by weird extensions
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ob_clean();
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// Initialize output compression if configured
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$this->initializeOutputCompression();
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return $handler->handle($request);
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}
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/**
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* Initialize output compression if configured
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*/
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protected function initializeOutputCompression()
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{
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if (extension_loaded('zlib') && $GLOBALS['TYPO3_CONF_VARS']['BE']['compressionLevel']) {
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if (MathUtility::canBeInterpretedAsInteger($GLOBALS['TYPO3_CONF_VARS']['BE']['compressionLevel'])) {
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@ini_set('zlib.output_compression_level', (string)$GLOBALS['TYPO3_CONF_VARS']['BE']['compressionLevel']);
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}
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ob_start('ob_gzhandler');
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}
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}
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}
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