TYPO3 v15 dev-main snapshot ()

2026-08-10 22:31:27 +02:00
commit 44c503b2d1
233 changed files with 31556 additions and 0 deletions
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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\RequestHandlerInterface;
+use TYPO3\CMS\Core\Authentication\BackendUserAuthentication;
+use TYPO3\CMS\Core\Authentication\Mfa\MfaRequiredException;
+use TYPO3\CMS\Core\Context\Context;
+use TYPO3\CMS\Core\Http\NormalizedParams;
+use TYPO3\CMS\Core\Localization\LanguageServiceFactory;
+use TYPO3\CMS\Core\Utility\GeneralUtility;
+use TYPO3\CMS\Frontend\Authentication\FrontendBackendUserAuthentication;
+use TYPO3\CMS\Frontend\Cache\CacheInstruction;
+
+/**
+ * This middleware authenticates a Backend User (be_user) (pre)-viewing a frontend page.
+ *
+ * This middleware also ensures that $GLOBALS['LANG'] is available, however it is possible that
+ * a different middleware later-on might unset the BE_USER as he/she is not allowed to preview a certain
+ * page due to rights management. As this can only happen once the page ID is resolved, this will happen
+ * after the routing middleware.
+ */
+class BackendUserAuthenticator extends \TYPO3\CMS\Core\Middleware\BackendUserAuthenticator
+{
+    public function __construct(
+        Context $context,
+        protected readonly LanguageServiceFactory $languageServiceFactory
+    ) {
+        parent::__construct($context);
+    }
+
+    /**
+     * Creates a backend user authentication object, tries to authenticate a user
+     */
+    public function process(ServerRequestInterface $request, RequestHandlerInterface $handler): ResponseInterface
+    {
+        // Initializing a possible logged-in Backend User
+        // If the backend cookie is set,
+        // we proceed and check if a backend user is logged in.
+        $backendUserObject = null;
+        if (isset($request->getCookieParams()[BackendUserAuthentication::getCookieName()])) {
+            $backendUserObject = $this->initializeBackendUser($request);
+        }
+        $GLOBALS['BE_USER'] = $backendUserObject;
+        // Load specific dependencies which are necessary for a valid Backend User
+        // like $GLOBALS['LANG'] for labels in the language of the BE User (so AdminPanel works)
+        if ($backendUserObject !== null) {
+            $GLOBALS['LANG'] = $this->languageServiceFactory->createFromUserPreferences($GLOBALS['BE_USER']);
+            $this->setBackendUserAspect($GLOBALS['BE_USER']);
+            if ($this->context->getPropertyFromAspect('backend.user', 'isLoggedIn', false)
+                && (strtolower($request->getServerParams()['HTTP_CACHE_CONTROL'] ?? '') === 'no-cache'
+                    || strtolower($request->getServerParams()['HTTP_PRAGMA'] ?? '') === 'no-cache')
+            ) {
+                // Detecting if shift-reload has been clicked to disable caching if so.
+                // This is only done if a backend user is logged in to prevent DoS-attacks for "casual" requests.
+                $cacheInstruction = $request->getAttribute('frontend.cache.instruction', new CacheInstruction());
+                $cacheInstruction->disableCache('EXT:frontend: Logged in backend user forced reload disabled cache.');
+                $request = $request->withAttribute('frontend.cache.instruction', $cacheInstruction);
+            }
+        }
+
+        $response = $handler->handle($request);
+
+        // If, when building the response, the user is still available, then ensure that the headers are sent properly
+        if ($this->context->getAspect('backend.user')->isLoggedIn()) {
+            return $this->applyHeadersToResponse($response);
+        }
+        return $response;
+    }
+
+    /**
+     * Creates the backend user object and returns it if a valid backend user is found.
+     */
+    protected function initializeBackendUser(ServerRequestInterface $request): ?FrontendBackendUserAuthentication
+    {
+        // New backend user object
+        $backendUserObject = GeneralUtility::makeInstance(FrontendBackendUserAuthentication::class);
+        try {
+            $backendUserObject->start($request);
+        } catch (MfaRequiredException $e) {
+            // Do nothing, as the user is not fully authenticated - has not
+            // passed required multi-factor authentication - via the backend.
+            return null;
+        }
+        if (!empty($backendUserObject->user['uid'])) {
+            $this->setBackendUserAspect($backendUserObject, (int)$backendUserObject->user['workspace_id']);
+            $backendUserObject->fetchGroupData();
+        }
+        // Unset the user initialization if any setting / restriction applies
+        if (!$this->isAuthenticated($backendUserObject, $request, $request->getAttribute('normalizedParams'))) {
+            $backendUserObject = null;
+            $this->setBackendUserAspect(null);
+        }
+        return $backendUserObject;
+    }
+
+    /**
+     * Implementing the access checks that the TYPO3 CMS bootstrap script does before a user is ever logged in.
+     * Returns TRUE if access is OK
+     */
+    protected function isAuthenticated(FrontendBackendUserAuthentication $user, ServerRequestInterface $request, NormalizedParams $normalizedParams): bool
+    {
+        // Check IP
+        $ipMask = trim($GLOBALS['TYPO3_CONF_VARS']['BE']['IPmaskList'] ?? '');
+        if ($ipMask && !GeneralUtility::cmpIP($normalizedParams->getRemoteAddress(), $ipMask)) {
+            return false;
+        }
+        // Check SSL (https)
+        if ($GLOBALS['TYPO3_CONF_VARS']['BE']['lockSSL'] && !$normalizedParams->isHttps()) {
+            return false;
+        }
+        return $user->backendCheckLogin($request);
+    }
+}