PageResolver.php

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<?php
 
declare(strict_types=1);
 
/*
 * 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!
 */
 
namespace ‪TYPO3\CMS\Frontend\Middleware;
 
use Psr\Http\Message\ResponseInterface;
use Psr\Http\Message\ServerRequestInterface;
use Psr\Http\Server\MiddlewareInterface;
use Psr\Http\Server\RequestHandlerInterface;
use ‪TYPO3\CMS\Core\Routing\PageArguments;
use ‪TYPO3\CMS\Core\Routing\RouteNotFoundException;
use ‪TYPO3\CMS\Core\Routing\SiteRouteResult;
use ‪TYPO3\CMS\Core\Site\Entity\Site;
use ‪TYPO3\CMS\Core\Utility\GeneralUtility;
use ‪TYPO3\CMS\Frontend\Controller\ErrorController;
use ‪TYPO3\CMS\Frontend\Page\PageAccessFailureReasons;
 
class ‪PageResolver implements MiddlewareInterface
{
    public function ‪process(ServerRequestInterface $request, RequestHandlerInterface $handler): ResponseInterface
    {
        $site = $request->getAttribute('site', null);
 
        if (!$site instanceof ‪Site) {
            return GeneralUtility::makeInstance(ErrorController::class)->pageNotFoundAction(
                $request,
                'No site configuration found.',
                ['code' => ‪PageAccessFailureReasons::PAGE_NOT_FOUND]
            );
        }
 
        $previousResult = $request->getAttribute('routing', null);
        if (!$previousResult) {
            return GeneralUtility::makeInstance(ErrorController::class)->pageNotFoundAction(
                $request,
                'The requested page does not exist',
                ['code' => ‪PageAccessFailureReasons::PAGE_NOT_FOUND]
            );
        }
 
        // Check for the route arguments or Query Parameter ID
        try {
            $pageArguments = $site->getRouter()->matchRequest($request, $previousResult);
            $request = $request->withAttribute('routing', $pageArguments);
        } catch (‪RouteNotFoundException $e) {
            return GeneralUtility::makeInstance(ErrorController::class)->pageNotFoundAction(
                $request,
                'The requested page does not exist',
                ['code' => ‪PageAccessFailureReasons::PAGE_NOT_FOUND]
            );
        }
 
        if (!$pageArguments->getPageId()) {
            return GeneralUtility::makeInstance(ErrorController::class)->pageNotFoundAction(
                $request,
                'The requested page does not exist',
                ['code' => ‪PageAccessFailureReasons::PAGE_NOT_FOUND]
            );
        }
 
        // stop in case arguments are dirty (=defined twice in route and GET query parameters)
        if ($pageArguments->areDirty()) {
            return GeneralUtility::makeInstance(ErrorController::class)->pageNotFoundAction(
                $request,
                'The requested URL is not distinct',
                ['code' => ‪PageAccessFailureReasons::PAGE_NOT_FOUND]
            );
        }
 
        // merge the PageArguments with the request query parameters
        $queryParams = array_replace_recursive($request->getQueryParams(), $pageArguments->getArguments());
        $request = $request->withQueryParams($queryParams);
 
        return $handler->handle($request);
    }
}