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<?php
declare(strict_types=1);
/*
* This file is part of Contao.
*
* (c) Leo Feyer
*
* @license LGPL-3.0-or-later
*/
namespace Contao\CoreBundle\Controller;
use Contao\CoreBundle\Framework\ContaoFramework;
use Contao\CoreBundle\Response\InitializeControllerResponse;
use Symfony\Component\EventDispatcher\EventDispatcherInterface;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\RequestStack;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\HttpKernel\Event\ExceptionEvent;
use Symfony\Component\HttpKernel\Event\FinishRequestEvent;
use Symfony\Component\HttpKernel\Event\ResponseEvent;
use Symfony\Component\HttpKernel\Exception\HttpExceptionInterface;
use Symfony\Component\HttpKernel\HttpKernel;
use Symfony\Component\HttpKernel\HttpKernelInterface;
use Symfony\Component\HttpKernel\KernelEvents;
use Symfony\Component\HttpKernel\KernelInterface;
use Symfony\Component\HttpKernel\TerminableInterface;
use Symfony\Component\Routing\Annotation\Route;
/**
* Custom controller to support legacy entry points.
*
* @internal
*
* @deprecated Deprecated in Contao 4.0, to be removed in Contao 5.0
*
* @Route("/_contao/initialize", name="contao_initialize")
*/
class InitializeController
{
private ContaoFramework $framework;
private RequestStack $requestStack;
private EventDispatcherInterface $eventDispatcher;
private HttpKernelInterface $httpKernel;
private KernelInterface $kernel;
public function __construct(ContaoFramework $framework, RequestStack $requestStack, EventDispatcherInterface $eventDispatcher, HttpKernelInterface $httpKernel, KernelInterface $kernel)
{
$this->framework = $framework;
$this->requestStack = $requestStack;
$this->eventDispatcher = $eventDispatcher;
$this->httpKernel = $httpKernel;
$this->kernel = $kernel;
}
/**
* Initializes the Contao framework.
*/
public function __invoke(): InitializeControllerResponse
{
trigger_deprecation('contao/core-bundle', '4.0', 'Using custom entry points has been deprecated and will no longer work in Contao 5.0.');
$mainRequest = $this->requestStack->getMainRequest();
if (null === $mainRequest) {
throw new \RuntimeException('The request stack did not contain a main request.');
}
$realRequest = Request::createFromGlobals();
$realRequest->setLocale($mainRequest->getLocale());
if ($mainRequest->hasSession()) {
$realRequest->setSession($mainRequest->getSession());
}
if (!\defined('TL_SCRIPT')) {
\define('TL_SCRIPT', '');
}
// Necessary to generate the correct base path
foreach (['REQUEST_URI', 'SCRIPT_NAME', 'SCRIPT_FILENAME', 'PHP_SELF'] as $name) {
$realRequest->server->set($name, str_replace(TL_SCRIPT, 'index.php', $realRequest->server->get($name)));
}
$realRequest->attributes->replace($mainRequest->attributes->all());
// Empty the request stack to make our real request the main
do {
$pop = $this->requestStack->pop();
} while ($pop);
// Initialize the framework with the real request
$this->requestStack->push($realRequest);
$this->framework->initialize();
// Add the main request again. When Kernel::handle() is finished,
// it will pop the current request, resulting in the real request being active.
$this->requestStack->push($mainRequest);
set_exception_handler(
function ($e) use ($realRequest): void {
// Do not catch PHP7 Throwables
if (!$e instanceof \Exception) {
throw $e;
}
$this->handleException($e, $realRequest);
}
);
// Collect all output into final response
$response = new Response();
ob_start(
static function ($buffer) use ($response) {
$response->setContent($response->getContent().$buffer);
return '';
},
0,
PHP_OUTPUT_HANDLER_REMOVABLE | PHP_OUTPUT_HANDLER_CLEANABLE
);
// register_shutdown_function() somehow can't handle $this
$self = $this;
register_shutdown_function(
static function () use ($self, $realRequest, $response): void {
@ob_end_clean();
$self->handleResponse($realRequest, $response);
}
);
return new InitializeControllerResponse('', 204);
}
/**
* Handles an exception by trying to convert it to a Response object.
*
* @see HttpKernel::handleException()
*/
private function handleException(\Throwable $e, Request $request): void
{
$event = new ExceptionEvent($this->httpKernel, $request, HttpKernelInterface::MAIN_REQUEST, $e);
$this->eventDispatcher->dispatch($event, KernelEvents::EXCEPTION);
// A listener might have replaced the exception
$e = $event->getThrowable();
if (!$response = $event->getResponse()) {
throw $e;
}
// The developer asked for a specific status code
if (
!$event->isAllowingCustomResponseCode()
&& !$response->isClientError()
&& !$response->isServerError()
&& !$response->isRedirect()
) {
// Ensure that we actually have an error response
if ($e instanceof HttpExceptionInterface) {
// Keep the HTTP status code and headers
$response->setStatusCode($e->getStatusCode());
$response->headers->add($e->getHeaders());
} else {
$response->setStatusCode(500);
}
}
try {
$event = new ResponseEvent($this->httpKernel, $request, HttpKernelInterface::MAIN_REQUEST, $response);
$this->eventDispatcher->dispatch($event, KernelEvents::RESPONSE);
$response = $event->getResponse();
$this->eventDispatcher->dispatch(
new FinishRequestEvent($this->httpKernel, $request, HttpKernelInterface::MAIN_REQUEST),
KernelEvents::FINISH_REQUEST
);
$this->requestStack->pop();
} catch (\Exception $e) {
// ignore and continue with original response
}
$response->send();
if ($this->kernel instanceof TerminableInterface) {
$this->kernel->terminate($request, $response);
}
exit;
}
/**
* Execute kernel.response and kernel.finish_request events.
*/
private function handleResponse(Request $request, Response $response): void
{
$event = new ResponseEvent($this->httpKernel, $request, HttpKernelInterface::MAIN_REQUEST, $response);
try {
$this->eventDispatcher->dispatch($event, KernelEvents::RESPONSE);
} catch (\Throwable $e) {
// Ignore any errors from events
}
$this->eventDispatcher->dispatch(
new FinishRequestEvent($this->httpKernel, $request, HttpKernelInterface::MAIN_REQUEST),
KernelEvents::FINISH_REQUEST
);
$this->requestStack->pop();
$response = $event->getResponse();
$response->send();
if ($this->kernel instanceof TerminableInterface) {
$this->kernel->terminate($request, $response);
}
}
}

vendor/contao/core-bundle/src/Controller/InitializeController.php line 61