Subversion-Projekte lars-tiefland.laravel_shop

<?php

/*

 * This file is part of the Symfony package.

 *

 * (c) Fabien Potencier <fabien@symfony.com>

 *

 * For the full copyright and license information, please view the LICENSE

 * file that was distributed with this source code.

 */

namespace Symfony\Component\HttpKernel;

use Symfony\Component\HttpFoundation\Exception\RequestExceptionInterface;

use Symfony\Component\HttpFoundation\Request;

use Symfony\Component\HttpFoundation\RequestStack;

use Symfony\Component\HttpFoundation\Response;

use Symfony\Component\HttpKernel\Controller\ArgumentResolver;

use Symfony\Component\HttpKernel\Controller\ArgumentResolverInterface;

use Symfony\Component\HttpKernel\Controller\ControllerResolverInterface;

use Symfony\Component\HttpKernel\Event\ControllerArgumentsEvent;

use Symfony\Component\HttpKernel\Event\ControllerEvent;

use Symfony\Component\HttpKernel\Event\ExceptionEvent;

use Symfony\Component\HttpKernel\Event\FinishRequestEvent;

use Symfony\Component\HttpKernel\Event\RequestEvent;

use Symfony\Component\HttpKernel\Event\ResponseEvent;

use Symfony\Component\HttpKernel\Event\TerminateEvent;

use Symfony\Component\HttpKernel\Event\ViewEvent;

use Symfony\Component\HttpKernel\Exception\BadRequestHttpException;

use Symfony\Component\HttpKernel\Exception\ControllerDoesNotReturnResponseException;

use Symfony\Component\HttpKernel\Exception\HttpExceptionInterface;

use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;

use Symfony\Contracts\EventDispatcher\EventDispatcherInterface;

// Help opcache.preload discover always-needed symbols

class_exists(ControllerArgumentsEvent::class);

class_exists(ControllerEvent::class);

class_exists(ExceptionEvent::class);

class_exists(FinishRequestEvent::class);

class_exists(RequestEvent::class);

class_exists(ResponseEvent::class);

class_exists(TerminateEvent::class);

class_exists(ViewEvent::class);

class_exists(KernelEvents::class);

/**

 * HttpKernel notifies events to convert a Request object to a Response one.

 *

 * @author Fabien Potencier <fabien@symfony.com>

 */

class HttpKernel implements HttpKernelInterface, TerminableInterface

{

    protected $dispatcher;

    protected $resolver;

    protected $requestStack;

    private ArgumentResolverInterface $argumentResolver;

    private bool $handleAllThrowables;

    public function __construct(EventDispatcherInterface $dispatcher, ControllerResolverInterface $resolver, RequestStack $requestStack = null, ArgumentResolverInterface $argumentResolver = null, bool $handleAllThrowables = false)

    {

        $this->dispatcher = $dispatcher;

        $this->resolver = $resolver;

        $this->requestStack = $requestStack ?? new RequestStack();

        $this->argumentResolver = $argumentResolver ?? new ArgumentResolver();

        $this->handleAllThrowables = $handleAllThrowables;

    }

    public function handle(Request $request, int $type = HttpKernelInterface::MAIN_REQUEST, bool $catch = true): Response

    {

        $request->headers->set('X-Php-Ob-Level', (string) ob_get_level());

        $this->requestStack->push($request);

        try {

            return $this->handleRaw($request, $type);

        } catch (\Throwable $e) {

            if ($e instanceof \Error && !$this->handleAllThrowables) {

                throw $e;

            }

            if ($e instanceof RequestExceptionInterface) {

                $e = new BadRequestHttpException($e->getMessage(), $e);

            }

            if (false === $catch) {

                $this->finishRequest($request, $type);

                throw $e;

            }

            return $this->handleThrowable($e, $request, $type);

        } finally {

            $this->requestStack->pop();

        }

    }

    public function terminate(Request $request, Response $response)

    {

        $this->dispatcher->dispatch(new TerminateEvent($this, $request, $response), KernelEvents::TERMINATE);

    }

    /**

     * @internal

     */

    public function terminateWithException(\Throwable $exception, Request $request = null)

    {

        if (!$request ??= $this->requestStack->getMainRequest()) {

            throw $exception;

        }

        if ($pop = $request !== $this->requestStack->getMainRequest()) {

            $this->requestStack->push($request);

        }

        try {

            $response = $this->handleThrowable($exception, $request, self::MAIN_REQUEST);

        } finally {

            if ($pop) {

                $this->requestStack->pop();

            }

        }

        $response->sendHeaders();

        $response->sendContent();

        $this->terminate($request, $response);

    }

    /**

     * Handles a request to convert it to a response.

     *

     * Exceptions are not caught.

     *

     * @throws \LogicException       If one of the listener does not behave as expected

     * @throws NotFoundHttpException When controller cannot be found

     */

    private function handleRaw(Request $request, int $type = self::MAIN_REQUEST): Response

    {

        // request

        $event = new RequestEvent($this, $request, $type);

        $this->dispatcher->dispatch($event, KernelEvents::REQUEST);

        if ($event->hasResponse()) {

            return $this->filterResponse($event->getResponse(), $request, $type);

        }

        // load controller

        if (false === $controller = $this->resolver->getController($request)) {

            throw new NotFoundHttpException(sprintf('Unable to find the controller for path "%s". The route is wrongly configured.', $request->getPathInfo()));

        }

        $event = new ControllerEvent($this, $controller, $request, $type);

        $this->dispatcher->dispatch($event, KernelEvents::CONTROLLER);

        $controller = $event->getController();

        // controller arguments

        $arguments = $this->argumentResolver->getArguments($request, $controller, $event->getControllerReflector());

        $event = new ControllerArgumentsEvent($this, $event, $arguments, $request, $type);

        $this->dispatcher->dispatch($event, KernelEvents::CONTROLLER_ARGUMENTS);

        $controller = $event->getController();

        $arguments = $event->getArguments();

        // call controller

        $response = $controller(...$arguments);

        // view

        if (!$response instanceof Response) {

            $event = new ViewEvent($this, $request, $type, $response, $event);

            $this->dispatcher->dispatch($event, KernelEvents::VIEW);

            if ($event->hasResponse()) {

                $response = $event->getResponse();

            } else {

                $msg = sprintf('The controller must return a "Symfony\Component\HttpFoundation\Response" object but it returned %s.', $this->varToString($response));

                // the user may have forgotten to return something

                if (null === $response) {

                    $msg .= ' Did you forget to add a return statement somewhere in your controller?';

                }

                throw new ControllerDoesNotReturnResponseException($msg, $controller, __FILE__, __LINE__ - 17);

            }

        }

        return $this->filterResponse($response, $request, $type);

    }

    /**

     * Filters a response object.

     *

     * @throws \RuntimeException if the passed object is not a Response instance

     */

    private function filterResponse(Response $response, Request $request, int $type): Response

    {

        $event = new ResponseEvent($this, $request, $type, $response);

        $this->dispatcher->dispatch($event, KernelEvents::RESPONSE);

        $this->finishRequest($request, $type);

        return $event->getResponse();

    }

    /**

     * Publishes the finish request event, then pop the request from the stack.

     *

     * Note that the order of the operations is important here, otherwise

     * operations such as {@link RequestStack::getParentRequest()} can lead to

     * weird results.

     */

    private function finishRequest(Request $request, int $type)

    {

        $this->dispatcher->dispatch(new FinishRequestEvent($this, $request, $type), KernelEvents::FINISH_REQUEST);

    }

    /**

     * Handles a throwable by trying to convert it to a Response.

     */

    private function handleThrowable(\Throwable $e, Request $request, int $type): Response

    {

        $event = new ExceptionEvent($this, $request, $type, $e);

        $this->dispatcher->dispatch($event, KernelEvents::EXCEPTION);

        // a listener might have replaced the exception

        $e = $event->getThrowable();

        if (!$event->hasResponse()) {

            $this->finishRequest($request, $type);

            throw $e;

        }

        $response = $event->getResponse();

        // 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 {

            return $this->filterResponse($response, $request, $type);

        } catch (\Throwable $e) {

            if ($e instanceof \Error && !$this->handleAllThrowables) {

                throw $e;

            }

            return $response;

        }

    }

    /**

     * Returns a human-readable string for the specified variable.

     */

    private function varToString(mixed $var): string

    {

        if (\is_object($var)) {

            return sprintf('an object of type %s', $var::class);

        }

        if (\is_array($var)) {

            $a = [];

            foreach ($var as $k => $v) {

                $a[] = sprintf('%s => ...', $k);

            }

            return sprintf('an array ([%s])', mb_substr(implode(', ', $a), 0, 255));

        }

        if (\is_resource($var)) {

            return sprintf('a resource (%s)', get_resource_type($var));

        }

        if (null === $var) {

            return 'null';

        }

        if (false === $var) {

            return 'a boolean value (false)';

        }

        if (true === $var) {

            return 'a boolean value (true)';

        }

        if (\is_string($var)) {

            return sprintf('a string ("%s%s")', mb_substr($var, 0, 255), mb_strlen($var) > 255 ? '...' : '');

        }

        if (is_numeric($var)) {

            return sprintf('a number (%s)', (string) $var);

        }

        return (string) $var;

    }

}