AbstractApplication.php

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<?php
declare(strict_types = 1);
namespace ‪TYPO3\CMS\Core\Http;
 
/*
 * 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\RequestHandlerInterface;
use ‪TYPO3\CMS\Core\Core\ApplicationInterface;
use ‪TYPO3\CMS\Core\Utility\GeneralUtility;
 
abstract class ‪AbstractApplication implements ‪ApplicationInterface
{
    private const ‪MULTI_LINE_HEADERS = [
        'set-cookie',
    ];
 
    protected ‪$requestHandler = '';
 
    protected ‪$middlewareStack = '';
 
    protected function ‪createMiddlewareDispatcher(‪RequestHandlerInterface ‪$requestHandler): ‪MiddlewareDispatcher
    {
        $resolver = new ‪MiddlewareStackResolver(
            GeneralUtility::makeInstance(\‪TYPO3\CMS\Core\Package\PackageManager::class),
            GeneralUtility::makeInstance(\‪TYPO3\CMS\Core\Service\DependencyOrderingService::class),
            GeneralUtility::makeInstance(\‪TYPO3\CMS\Core\Cache\CacheManager::class)->getCache('cache_core')
        );
        $middlewares = $resolver->resolve($this->middlewareStack);
 
        return new ‪MiddlewareDispatcher(‪$requestHandler, $middlewares);
    }
 
    protected function ‪sendResponse(ResponseInterface $response)
    {
        if ($response instanceof ‪NullResponse) {
            return;
        }
 
        // @todo This requires some merge strategy or header callback handling
        if (!headers_sent()) {
            // If the response code was not changed by legacy code (still is 200)
            // then allow the PSR-7 response object to explicitly set it.
            // Otherwise let legacy code take precedence.
            // This code path can be deprecated once we expose the response object to third party code
            if (http_response_code() === 200) {
                header('HTTP/' . $response->getProtocolVersion() . ' ' . $response->getStatusCode() . ' ' . $response->getReasonPhrase());
            }
 
            foreach ($response->getHeaders() as $name => $values) {
                if (in_array(strtolower($name), self::MULTI_LINE_HEADERS, true)) {
                    foreach ($values as $value) {
                        header($name . ': ' . $value, false);
                    }
                } else {
                    header($name . ': ' . implode(', ', $values));
                }
            }
        }
        $body = $response->getBody();
        if ($body instanceof SelfEmittableStreamInterface) {
            // Optimization for streams that use php functions like readfile() as fastpath for serving files.
            $body->emit();
        } else {
            echo $body->__toString();
        }
    }
 
    protected function ‪handle(ServerRequestInterface $request): ResponseInterface
    {
        ‪$requestHandler = GeneralUtility::makeInstance($this->requestHandler);
        $dispatcher = $this->‪createMiddlewareDispatcher(‪$requestHandler);
 
        return $dispatcher->handle($request);
    }
 
    final public function ‪run(callable $execute = null)
    {
        try {
            $response = $this->‪handle(
                \‪TYPO3\CMS\Core\Http\‪ServerRequestFactory::fromGlobals()
            );
            if ($execute !== null) {
                call_user_func($execute);
            }
        } catch (ImmediateResponseException $exception) {
            $response = $exception->getResponse();
        }
 
        $this->‪sendResponse($response);
    }
}