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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 Psr\Log\LoggerAwareInterface;
use Psr\Log\LoggerAwareTrait;
use TYPO3\CMS\Core\Domain\Repository\PageRepository;
use TYPO3\CMS\Core\Http\ImmediateResponseException;
use TYPO3\CMS\Core\Http\RedirectResponse;
use TYPO3\CMS\Core\Routing\PageArguments;
use TYPO3\CMS\Core\Utility\GeneralUtility;
use TYPO3\CMS\Frontend\Controller\ErrorController;
use TYPO3\CMS\Frontend\Page\PageAccessFailureReasons;
/**
* Checks mount points, shortcuts and redirects to the target.
* Alternatively, checks if the current page is a redirect to an external page
*
* @internal this middleware might get removed in TYPO3 v10.x.
*/
class ShortcutAndMountPointRedirect implements MiddlewareInterface, LoggerAwareInterface
{
use LoggerAwareTrait;
public function process(ServerRequestInterface $request, RequestHandlerInterface $handler): ResponseInterface
{
$exposeInformation = $GLOBALS['TYPO3_CONF_VARS']['FE']['exposeRedirectInformation'] ?? false;
// Check for shortcut page and mount point redirect
try {
$redirectToUri = $this->getRedirectUri($request);
} catch (ImmediateResponseException $e) {
return $e->getResponse();
}
if ($redirectToUri !== null && $redirectToUri !== (string)$request->getUri()) {
/** @var PageArguments $pageArguments */
$pageArguments = $request->getAttribute('routing', null);
$message = 'TYPO3 Shortcut/Mountpoint' . ($exposeInformation ? ' at page with ID ' . $pageArguments->getPageId() : '');
return new RedirectResponse(
$redirectToUri,
307,
['X-Redirect-By' => $message]
);
}
// See if the current page is of doktype "External URL", if so, do a redirect as well.
$controller = $request->getAttribute('frontend.controller');
if ((int)$controller->page['doktype'] === PageRepository::DOKTYPE_LINK) {
$externalUrl = $this->prefixExternalPageUrl(
$controller->page['url'],
$request->getAttribute('normalizedParams')->getSiteUrl()
);
$message = 'TYPO3 External URL' . ($exposeInformation ? ' at page with ID ' . $controller->page['uid'] : '');
if (!empty($externalUrl)) {
return new RedirectResponse(
$externalUrl,
303,
['X-Redirect-By' => $message]
);
}
$this->logger->error(
'Page of type "External URL" could not be resolved properly',
[
'page' => $controller->page,
]
);
return GeneralUtility::makeInstance(ErrorController::class)->pageNotFoundAction(
$request,
'Page of type "External URL" could not be resolved properly',
$controller->getPageAccessFailureReasons(PageAccessFailureReasons::INVALID_EXTERNAL_URL)
);
}
return $handler->handle($request);
}
protected function getRedirectUri(ServerRequestInterface $request): ?string
{
$controller = $request->getAttribute('frontend.controller');
$redirectToUri = $controller->getRedirectUriForShortcut($request);
if ($redirectToUri !== null) {
return $redirectToUri;
}
return $controller->getRedirectUriForMountPoint($request);
}
/**
* Returns the redirect URL for the input page row IF the doktype is set to 3.
*
* @param string $redirectTo The page row to return URL type for
* @param string $sitePrefix if no protocol or relative path given, the site prefix is added
* @return string The URL from based on the external page URL given with a prefix.
*/
protected function prefixExternalPageUrl(string $redirectTo, string $sitePrefix): string
{
$uI = parse_url($redirectTo);
// If relative path, prefix Site URL
// If it's a valid email without protocol, add "mailto:"
if (!($uI['scheme'] ?? false)) {
if (GeneralUtility::validEmail($redirectTo)) {
$redirectTo = 'mailto:' . $redirectTo;
} elseif (!str_starts_with($redirectTo, '/')) {
$redirectTo = $sitePrefix . $redirectTo;
}
}
return $redirectTo;
}
}