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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\Backend\Controller;
use Psr\Http\Message\ResponseInterface;
use Psr\Http\Message\ServerRequestInterface;
use TYPO3\CMS\Backend\Attribute\Controller;
use TYPO3\CMS\Backend\Routing\UriBuilder;
use TYPO3\CMS\Core\Authentication\BackendUserAuthentication;
use TYPO3\CMS\Core\FormProtection\BackendFormProtection;
use TYPO3\CMS\Core\FormProtection\FormProtectionFactory;
use TYPO3\CMS\Core\Http\RedirectResponse;
use TYPO3\CMS\Core\SysLog\Action\Login as SystemLogLoginAction;
use TYPO3\CMS\Core\SysLog\Error as SystemLogErrorClassification;
use TYPO3\CMS\Core\SysLog\Type as SystemLogType;
use TYPO3\CMS\Core\Utility\GeneralUtility;
/**
* Script Class for logging a user out.
* Does not display any content, just calls the logout-function for the current user and then makes a redirect.
* @internal This class is a specific Backend controller implementation and is not considered part of the Public TYPO3 API.
*/
#[Controller]
class LogoutController
{
public function __construct(
protected readonly UriBuilder $uriBuilder,
protected readonly FormProtectionFactory $formProtectionFactory
) {}
/**
* Injects the request object for the current request or subrequest
* As this controller goes only through the main() method, it is rather simple for now
* This will be split up in an abstract controller once proper routing/dispatcher is in place.
*
* @param ServerRequestInterface $request the current request
* @return ResponseInterface the response with the content
*/
public function logoutAction(ServerRequestInterface $request): ResponseInterface
{
$this->processLogout($request);
$redirectUrl = $request->getParsedBody()['redirect'] ?? $request->getQueryParams()['redirect'] ?? '';
$redirectUrl = GeneralUtility::sanitizeLocalUrl($redirectUrl);
if (empty($redirectUrl)) {
$redirectUrl = (string)$this->uriBuilder->buildUriFromRoute('login', [], UriBuilder::ABSOLUTE_URL);
}
return new RedirectResponse(GeneralUtility::locationHeaderUrl($redirectUrl), 303);
}
/**
* Performs the logout processing
*/
protected function processLogout(ServerRequestInterface $request): void
{
if (empty($this->getBackendUser()->user['username'])) {
return;
}
// Logout written to log
$this->getBackendUser()->writelog(SystemLogType::LOGIN, SystemLogLoginAction::LOGOUT, SystemLogErrorClassification::MESSAGE, 1, 'User %s logged out from TYPO3 Backend', [$this->getBackendUser()->user['username']]);
/** @var BackendFormProtection $backendFormProtection */
$backendFormProtection = $this->formProtectionFactory->createFromRequest($request);
$backendFormProtection->removeSessionTokenFromRegistry();
$this->getBackendUser()->logoff();
}
protected function getBackendUser(): BackendUserAuthentication
{
return $GLOBALS['BE_USER'];
}
}