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salam committed 2026-10-19 08:18:39 +02:00
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typo3/sysext/backend/Classes/Controller/LoginController.php
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<?php
declare(strict_types = 1);
namespace TYPO3\CMS\Backend\Controller;
/*
* 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!
*/
use Psr\Http\Message\ResponseInterface;
use Psr\Http\Message\ServerRequestInterface;
use Psr\Log\LoggerAwareInterface;
use Psr\Log\LoggerAwareTrait;
use Symfony\Component\HttpFoundation\Cookie;
use TYPO3\CMS\Backend\Exception;
use TYPO3\CMS\Backend\LoginProvider\LoginProviderInterface;
use TYPO3\CMS\Backend\Routing\UriBuilder;
use TYPO3\CMS\Backend\Template\DocumentTemplate;
use TYPO3\CMS\Backend\Utility\BackendUtility;
use TYPO3\CMS\Core\Authentication\BackendUserAuthentication;
use TYPO3\CMS\Core\Configuration\ExtensionConfiguration;
use TYPO3\CMS\Core\Configuration\Features;
use TYPO3\CMS\Core\Database\ConnectionPool;
use TYPO3\CMS\Core\FormProtection\BackendFormProtection;
use TYPO3\CMS\Core\FormProtection\FormProtectionFactory;
use TYPO3\CMS\Core\Http\HtmlResponse;
use TYPO3\CMS\Core\Http\NormalizedParams;
use TYPO3\CMS\Core\Localization\LanguageService;
use TYPO3\CMS\Core\Localization\Locales;
use TYPO3\CMS\Core\Page\PageRenderer;
use TYPO3\CMS\Core\Utility\GeneralUtility;
use TYPO3\CMS\Core\Utility\HttpUtility;
use TYPO3\CMS\Core\Utility\PathUtility;
use TYPO3\CMS\Fluid\View\StandaloneView;
/**
* Script Class for rendering the login form
* @internal This class is a specific Backend controller implementation and is not considered part of the Public TYPO3 API.
*/
class LoginController implements LoggerAwareInterface
{
use LoggerAwareTrait;
/**
* The URL to redirect to after login.
*
* @var string
*/
protected $redirectUrl;
/**
* Set to the redirect URL of the form (may be redirect_url or "index.php?M=main")
*
* @var string
*/
protected $redirectToURL;
/**
* the active login provider identifier
*
* @var string
*/
protected $loginProviderIdentifier;
/**
* List of registered and sorted login providers
*
* @var array
*/
protected $loginProviders = [];
/**
* Login-refresh bool; The backend will call this script
* with this value set when the login is close to being expired
* and the form needs to be redrawn.
*
* @var bool
*/
protected $loginRefresh;
/**
* Value of forms submit button for login.
*
* @var string
*/
protected $submitValue;
/**
* @var StandaloneView
*/
protected $view;
/**
* Initialize the login box. Will also react on a &L=OUT flag and exit.
*/
public function __construct()
{
// @deprecated since TYPO3 v9, will be obsolete in TYPO3 v10.0
$request = $GLOBALS['TYPO3_REQUEST'];
$parsedBody = $request->getParsedBody();
$queryParams = $request->getQueryParams();
$this->validateAndSortLoginProviders();
$this->redirectUrl = GeneralUtility::sanitizeLocalUrl($parsedBody['redirect_url'] ?? $queryParams['redirect_url'] ?? null);
$this->loginProviderIdentifier = $this->detectLoginProvider($request);
$this->loginRefresh = (bool)($parsedBody['loginRefresh'] ?? $queryParams['loginRefresh'] ?? false);
// Value of "Login" button. If set, the login button was pressed.
$this->submitValue = $parsedBody['commandLI'] ?? $queryParams['commandLI'] ?? null;
// Try to get the preferred browser language
/** @var Locales $locales */
$locales = GeneralUtility::makeInstance(Locales::class);
$httpAcceptLanguage = $request->getServerParams()['HTTP_ACCEPT_LANGUAGE'];
$preferredBrowserLanguage = $locales
->getPreferredClientLanguage($httpAcceptLanguage);
// If we found a $preferredBrowserLanguage and it is not the default language and no be_user is logged in
// initialize $this->getLanguageService() again with $preferredBrowserLanguage
if ($preferredBrowserLanguage !== 'default' && empty($this->getBackendUserAuthentication()->user['uid'])) {
$this->getLanguageService()->init($preferredBrowserLanguage);
GeneralUtility::makeInstance(PageRenderer::class)->setLanguage($preferredBrowserLanguage);
}
$this->getLanguageService()->includeLLFile('EXT:backend/Resources/Private/Language/locallang_login.xlf');
// Setting the redirect URL to "index.php?M=main" if no alternative input is given
if ($this->redirectUrl) {
$this->redirectToURL = $this->redirectUrl;
} else {
// (consolidate RouteDispatcher::evaluateReferrer() when changing 'main' to something different)
$uriBuilder = GeneralUtility::makeInstance(UriBuilder::class);
$this->redirectToURL = (string)$uriBuilder->buildUriFromRoute('main');
}
// If "L" is "OUT", then any logged in is logged out. If redirect_url is given, we redirect to it
if (($parsedBody['L'] ?? $queryParams['L'] ?? null) === 'OUT' && is_object($this->getBackendUserAuthentication())) {
$this->getBackendUserAuthentication()->logoff();
$this->redirectToUrl();
}
$this->view = $this->getFluidTemplateObject();
}
/**
* Injects the request and response objects for the current request or subrequest
* As this controller goes only through the main() method, it is rather simple for now
*
* @param ServerRequestInterface $request the current request
* @return ResponseInterface the finished response with the content
*/
public function formAction(ServerRequestInterface $request): ResponseInterface
{
return new HtmlResponse($this->createLoginLogoutForm($request));
}
/**
* Calls the main function but with loginRefresh enabled at any time
*
* @param ServerRequestInterface $request the current request
* @return ResponseInterface the finished response with the content
*/
public function refreshAction(ServerRequestInterface $request): ResponseInterface
{
$this->loginRefresh = true;
return new HtmlResponse($this->createLoginLogoutForm($request));
}
/**
* Main function - creating the login/logout form
*
* @throws Exception
* @return string The content to output
* @deprecated since TYPO3 v9, will be removed in TYPO3 v10.0
*/
public function main(): string
{
trigger_error('LoginController->main() will be replaced by protected method createLoginLogoutForm() in TYPO3 v10.0. Do not call from other extension.', E_USER_DEPRECATED);
return $this->createLoginLogoutForm($GLOBALS['TYPO3_REQUEST']);
}
/**
* Main function - creating the login/logout form
*
* @param ServerRequestInterface $request
* @return string $content
* @throws Exception
*/
protected function createLoginLogoutForm(ServerRequestInterface $request): string
{
/** @var PageRenderer $pageRenderer */
$pageRenderer = GeneralUtility::makeInstance(PageRenderer::class);
$pageRenderer->loadRequireJsModule('TYPO3/CMS/Backend/Login');
// Checking, if we should make a redirect.
// Might set JavaScript in the header to close window.
$this->checkRedirect($request);
// Extension Configuration
$extConf = GeneralUtility::makeInstance(ExtensionConfiguration::class)->get('backend');
// Background Image
if (!empty($extConf['loginBackgroundImage'])) {
$backgroundImage = $this->getUriForFileName($extConf['loginBackgroundImage']);
if ($backgroundImage === '') {
$this->logger->warning(
'The configured TYPO3 backend login background image "' . htmlspecialchars($extConf['loginBackgroundImage']) .
'" can\'t be resolved. Please check if the file exists and the extension is activated.'
);
}
$this->getDocumentTemplate()->inDocStylesArray[] = '
.typo3-login-carousel-control.right,
.typo3-login-carousel-control.left,
.panel-login { border: 0; }
.typo3-login { background-image: url("' . $backgroundImage . '"); }
.typo3-login-footnote { background-color: #000000; color: #ffffff; opacity: 0.5; }
';
}
// Login Footnote
if (!empty($extConf['loginFootnote'])) {
$this->view->assign('loginFootnote', strip_tags(trim($extConf['loginFootnote'])));
}
// Add additional css to use the highlight color in the login screen
if (!empty($extConf['loginHighlightColor'])) {
$this->getDocumentTemplate()->inDocStylesArray[] = '
.btn-login.disabled, .btn-login[disabled], fieldset[disabled] .btn-login,
.btn-login.disabled:hover, .btn-login[disabled]:hover, fieldset[disabled] .btn-login:hover,
.btn-login.disabled:focus, .btn-login[disabled]:focus, fieldset[disabled] .btn-login:focus,
.btn-login.disabled.focus, .btn-login[disabled].focus, fieldset[disabled] .btn-login.focus,
.btn-login.disabled:active, .btn-login[disabled]:active, fieldset[disabled] .btn-login:active,
.btn-login.disabled.active, .btn-login[disabled].active, fieldset[disabled] .btn-login.active,
.btn-login:hover, .btn-login:focus, .btn-login:active,
.btn-login:active:hover, .btn-login:active:focus,
.btn-login { background-color: ' . $extConf['loginHighlightColor'] . '; }
.panel-login .panel-body { border-color: ' . $extConf['loginHighlightColor'] . '; }
';
}
// Logo
if (!empty($extConf['loginLogo'])) {
if ($this->getUriForFileName($extConf['loginLogo']) === '') {
$this->logger->warning(
'The configured TYPO3 backend login logo "' . htmlspecialchars($extConf['loginLogo']) .
'" can\'t be resolved. Please check if the file exists and the extension is activated.'
);
}
$logo = $extConf['loginLogo'];
} else {
// Use TYPO3 logo depending on highlight color
if (!empty($extConf['loginHighlightColor'])) {
$logo = 'EXT:backend/Resources/Public/Images/typo3_black.svg';
} else {
$logo = 'EXT:backend/Resources/Public/Images/typo3_orange.svg';
}
$this->getDocumentTemplate()->inDocStylesArray[] = '
.typo3-login-logo .typo3-login-image { max-width: 150px; height:100%;}
';
}
$logo = $this->getUriForFileName($logo);
// Start form
$formType = empty($this->getBackendUserAuthentication()->user['uid']) ? 'LoginForm' : 'LogoutForm';
$this->view->assignMultiple([
'backendUser' => $this->getBackendUserAuthentication()->user,
'hasLoginError' => $this->isLoginInProgress($request),
'formType' => $formType,
'logo' => $logo,
'images' => [
'capslock' => $this->getUriForFileName('EXT:backend/Resources/Public/Images/icon_capslock.svg'),
'typo3' => $this->getUriForFileName('EXT:backend/Resources/Public/Images/typo3_orange.svg'),
],
'copyright' => BackendUtility::TYPO3_copyRightNotice(),
'redirectUrl' => $this->redirectUrl,
'loginRefresh' => $this->loginRefresh,
'loginNewsItems' => $this->getSystemNews(),
'referrerCheckEnabled' => GeneralUtility::makeInstance(Features::class)->isFeatureEnabled('security.backend.enforceReferrer'),
'loginUrl' => (string)$request->getUri(),
'loginProviderIdentifier' => $this->loginProviderIdentifier,
'loginProviders' => $this->loginProviders
]);
// Initialize interface selectors:
$this->makeInterfaceSelector($request);
/** @var LoginProviderInterface $loginProvider */
$loginProvider = GeneralUtility::makeInstance($this->loginProviders[$this->loginProviderIdentifier]['provider']);
$loginProvider->render($this->view, $pageRenderer, $this);
$content = $this->getDocumentTemplate()->startPage('TYPO3 CMS Login: ' . $GLOBALS['TYPO3_CONF_VARS']['SYS']['sitename']);
$content .= $this->view->render();
$content .= $this->getDocumentTemplate()->endPage();
return $content;
}
/**
* Checking, if we should perform some sort of redirection OR closing of windows.
*
* Do a redirect if a user is logged in
*
* @param ServerRequestInterface $request
* @throws \RuntimeException
* @throws \UnexpectedValueException
* @throws \TYPO3\CMS\Backend\Routing\Exception\RouteNotFoundException
*/
protected function checkRedirect(ServerRequestInterface $request): void
{
$backendUser = $this->getBackendUserAuthentication();
if (empty($backendUser->user['uid'])) {
return;
}
/*
* If no cookie has been set previously, we tell people that this is a problem.
* This assumes that a cookie-setting script (like this one) has been hit at
* least once prior to this instance.
*/
if (!isset($_COOKIE[BackendUserAuthentication::getCookieName()])) {
if ($this->submitValue === 'setCookie') {
/*
* we tried it a second time but still no cookie
* 26/4 2005: This does not work anymore, because the saving of challenge values
* in $_SESSION means the system will act as if the password was wrong.
*/
throw new \RuntimeException('Login-error: Yeah, that\'s a classic. No cookies, no TYPO3. ' .
'Please accept cookies from TYPO3 - otherwise you\'ll not be able to use the system.', 1294586846);
}
// try it once again - that might be needed for auto login
$this->redirectToURL = 'index.php?commandLI=setCookie';
}
$redirectToUrl = (string)($backendUser->getTSConfig()['auth.']['BE.']['redirectToURL'] ?? '');
if (empty($redirectToUrl)) {
// Based on the interface we set the redirect script
$parsedBody = $request->getParsedBody();
$queryParams = $request->getQueryParams();
$interface = $parsedBody['interface'] ?? $queryParams['interface'] ?? '';
switch ($interface) {
case 'frontend':
$this->redirectToURL = '../';
break;
case 'backend':
// (consolidate RouteDispatcher::evaluateReferrer() when changing 'main' to something different)
$uriBuilder = GeneralUtility::makeInstance(UriBuilder::class);
$this->redirectToURL = (string)$uriBuilder->buildUriFromRoute('main');
break;
}
} else {
$this->redirectToURL = $redirectToUrl;
$interface = '';
}
// store interface
$backendUser->uc['interfaceSetup'] = $interface;
$backendUser->writeUC();
$formProtection = FormProtectionFactory::get();
if (!$formProtection instanceof BackendFormProtection) {
throw new \RuntimeException('The Form Protection retrieved does not match the expected one.', 1432080411);
}
if ($this->loginRefresh) {
$formProtection->setSessionTokenFromRegistry();
$formProtection->persistSessionToken();
$this->getDocumentTemplate()->JScode .= GeneralUtility::wrapJS('
if (window.opener && window.opener.TYPO3 && window.opener.TYPO3.LoginRefresh) {
window.opener.TYPO3.LoginRefresh.startTask();
window.close();
}
');
} else {
$formProtection->storeSessionTokenInRegistry();
$this->redirectToUrl();
}
}
/**
* Making interface selector
*
* @deprecated since TYPO3 v9, will be removed in TYPO3 v10.0
*/
public function makeInterfaceSelectorBox(): void
{
trigger_error('LoginController->makeInterfaceSelectorBox() will be replaced by protected method makeInterfaceSelector() in TYPO3 v10.0. Do not call from other extension.', E_USER_DEPRECATED);
$this->makeInterfaceSelector($GLOBALS['TYPO3_REQUEST']);
}
/**
* Making interface selector
* @param ServerRequestInterface $request
*/
protected function makeInterfaceSelector(ServerRequestInterface $request): void
{
// If interfaces are defined AND no input redirect URL in GET vars:
if ($GLOBALS['TYPO3_CONF_VARS']['BE']['interfaces'] && ($this->isLoginInProgress($request) || !$this->redirectUrl)) {
$parts = GeneralUtility::trimExplode(',', $GLOBALS['TYPO3_CONF_VARS']['BE']['interfaces']);
if (count($parts) > 1) {
// Only if more than one interface is defined we will show the selector
$uriBuilder = GeneralUtility::makeInstance(UriBuilder::class);
$interfaces = [
'backend' => [
'label' => $this->getLanguageService()->getLL('interface.backend'),
'jumpScript' => (string)$uriBuilder->buildUriFromRoute('main'),
'interface' => 'backend'
],
'frontend' => [
'label' => $this->getLanguageService()->getLL('interface.frontend'),
'jumpScript' => '../',
'interface' => 'frontend'
]
];
$this->view->assign('showInterfaceSelector', true);
$this->view->assign('interfaces', $interfaces);
} elseif (!$this->redirectUrl) {
// If there is only ONE interface value set and no redirect_url is present
$this->view->assign('showInterfaceSelector', false);
$this->view->assign('interface', $parts[0]);
}
}
}
/**
* Gets news from sys_news and converts them into a format suitable for
* showing them at the login screen.
*
* @return array An array of login news.
*/
protected function getSystemNews(): array
{
$systemNewsTable = 'sys_news';
$queryBuilder = GeneralUtility::makeInstance(ConnectionPool::class)
->getQueryBuilderForTable($systemNewsTable);
$systemNews = [];
$systemNewsRecords = $queryBuilder
->select('title', 'content', 'crdate')
->from($systemNewsTable)
->orderBy('crdate', 'DESC')
->execute()
->fetchAll();
foreach ($systemNewsRecords as $systemNewsRecord) {
$systemNews[] = [
'date' => date($GLOBALS['TYPO3_CONF_VARS']['SYS']['ddmmyy'], (int)$systemNewsRecord['crdate']),
'header' => $systemNewsRecord['title'],
'content' => $systemNewsRecord['content']
];
}
return $systemNews;
}
/**
* Returns the uri of a relative reference, resolves the "EXT:" prefix
* (way of referring to files inside extensions) and checks that the file is inside
* the project root of the TYPO3 installation
*
* @param string $filename The input filename/filepath to evaluate
* @return string Returns the filename of $filename if valid, otherwise blank string.
* @internal
*/
private function getUriForFileName($filename): string
{
// Check if it's already a URL
if (preg_match('/^(https?:)?\/\//', $filename)) {
return $filename;
}
$absoluteFilename = GeneralUtility::getFileAbsFileName(ltrim($filename, '/'));
$filename = '';
if ($absoluteFilename !== '' && @is_file($absoluteFilename)) {
$filename = PathUtility::getAbsoluteWebPath($absoluteFilename);
}
return $filename;
}
/**
* Checks if login credentials are currently submitted
*
* @param ServerRequestInterface $request
* @return bool
*/
protected function isLoginInProgress(ServerRequestInterface $request): bool
{
$parsedBody = $request->getParsedBody();
$queryParams = $request->getQueryParams();
$username = $parsedBody['username'] ?? $queryParams['username'] ?? null;
return !empty($username) || !empty($this->submitValue);
}
/**
* returns a new standalone view, shorthand function
*
* @return StandaloneView
*/
protected function getFluidTemplateObject()
{
/** @var StandaloneView $view */
$view = GeneralUtility::makeInstance(StandaloneView::class);
$view->setLayoutRootPaths([GeneralUtility::getFileAbsFileName('EXT:backend/Resources/Private/Layouts')]);
$view->setPartialRootPaths([GeneralUtility::getFileAbsFileName('EXT:backend/Resources/Private/Partials')]);
$view->setTemplateRootPaths([GeneralUtility::getFileAbsFileName('EXT:backend/Resources/Private/Templates')]);
$view->getRequest()->setControllerExtensionName('Backend');
return $view;
}
/**
* Wrapper method to redirect to configured redirect URL
*/
protected function redirectToUrl(): void
{
HttpUtility::redirect($this->redirectToURL);
}
/**
* Validates the registered login providers
*
* @throws \RuntimeException
*/
protected function validateAndSortLoginProviders()
{
$providers = $GLOBALS['TYPO3_CONF_VARS']['EXTCONF']['backend']['loginProviders'] ?? [];
if (empty($providers) || !is_array($providers)) {
throw new \RuntimeException('No login providers are registered in $GLOBALS[\'TYPO3_CONF_VARS\'][\'EXTCONF\'][\'backend\'][\'loginProviders\'].', 1433417281);
}
foreach ($providers as $identifier => $configuration) {
if (empty($configuration) || !is_array($configuration)) {
throw new \RuntimeException('Missing configuration for login provider "' . $identifier . '".', 1433416043);
}
if (!is_string($configuration['provider']) || empty($configuration['provider']) || !class_exists($configuration['provider']) || !is_subclass_of($configuration['provider'], LoginProviderInterface::class)) {
throw new \RuntimeException('The login provider "' . $identifier . '" defines an invalid provider. Ensure the class exists and implements the "' . LoginProviderInterface::class . '".', 1460977275);
}
if (empty($configuration['label'])) {
throw new \RuntimeException('Missing label definition for login provider "' . $identifier . '".', 1433416044);
}
if (empty($configuration['icon-class'])) {
throw new \RuntimeException('Missing icon definition for login provider "' . $identifier . '".', 1433416045);
}
if (!isset($configuration['sorting'])) {
throw new \RuntimeException('Missing sorting definition for login provider "' . $identifier . '".', 1433416046);
}
}
// sort providers
uasort($providers, function ($a, $b) {
return $b['sorting'] - $a['sorting'];
});
$this->loginProviders = $providers;
}
/**
* Detect the login provider, get from request or choose the
* first one as default
*
* @param ServerRequestInterface $request
* @return string
*/
protected function detectLoginProvider(ServerRequestInterface $request): string
{
$parsedBody = $request->getParsedBody();
$queryParams = $request->getQueryParams();
$loginProvider = $parsedBody['loginProvider'] ?? $queryParams['loginProvider'] ?? '';
if ((empty($loginProvider) || !isset($this->loginProviders[$loginProvider])) && !empty($_COOKIE['be_lastLoginProvider'])) {
$loginProvider = $_COOKIE['be_lastLoginProvider'];
}
if (empty($loginProvider) || !isset($this->loginProviders[$loginProvider])) {
reset($this->loginProviders);
$loginProvider = key($this->loginProviders);
}
// Use the secure option when the current request is served by a secure connection
/** @var NormalizedParams $normalizedParams */
$normalizedParams = $request->getAttribute('normalizedParams');
$isHttps = $normalizedParams->isHttps();
$cookieSecure = (bool)$GLOBALS['TYPO3_CONF_VARS']['SYS']['cookieSecure'] && $isHttps;
$cookie = new Cookie(
'be_lastLoginProvider',
(string)$loginProvider,
$GLOBALS['EXEC_TIME'] + 7776000, // 90 days
$normalizedParams->getSitePath() . TYPO3_mainDir,
'',
$cookieSecure,
true,
false,
Cookie::SAMESITE_STRICT
);
header('Set-Cookie: ' . $cookie->__toString(), false);
return (string)$loginProvider;
}
/**
* @return string
*/
public function getLoginProviderIdentifier()
{
return $this->loginProviderIdentifier;
}
/**
* Returns LanguageService
*
* @return LanguageService
*/
protected function getLanguageService(): LanguageService
{
return $GLOBALS['LANG'];
}
/**
* @return BackendUserAuthentication
*/
protected function getBackendUserAuthentication(): BackendUserAuthentication
{
return $GLOBALS['BE_USER'];
}
/**
* Returns an instance of DocumentTemplate
*
* @return DocumentTemplate
*/
protected function getDocumentTemplate(): DocumentTemplate
{
return $GLOBALS['TBE_TEMPLATE'];
}
}