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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;
/**
* Resolve the page ID based on TYPO3's routing functionality configured in a site.
*
* Processes the page ID, page type (typeNum) and other parameters built from queryArguments and routeParameters.
* After this point we have an array, TSFE->page, which is the page-record of the current page, $TSFE->id.
*
* However, if there is a backend user logged in and he has NO access to this page (and the page is hidden),
* then the ID is determined again and the backend user is not considered for the rest of the frontend request.
*/
class PageResolver implements MiddlewareInterface
{
/**
* Resolve the page ID
*/
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]
);
}
/** @var SiteRouteResult|null $previousResult */
$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 {
/** @var PageArguments $pageArguments */
$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);
}
}