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<?php
/*
* 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\Core\Resource\Security;
use Psr\Http\Message\ServerRequestInterface;
use TYPO3\CMS\Core\Http\ApplicationType;
use TYPO3\CMS\Core\Resource\Event\AfterResourceStorageInitializationEvent;
use TYPO3\CMS\Core\Resource\Exception\FolderDoesNotExistException;
use TYPO3\CMS\Core\Resource\ResourceStorage;
use TYPO3\CMS\Core\Utility\GeneralUtility;
/**
* The aspect injects user permissions and mount points into the storage
* based on user or group configuration.
*
* We do not have AOP in TYPO3 for now, thus the aspect which
* deals with resource security is an EventListener which reacts on storage object creation.
*
* @internal this is an Event Listener, and not part of TYPO3 Core API.
*/
final class StoragePermissionsAspect
{
/**
* The event listener for the event where storage objects are created
*/
public function addUserPermissionsToStorage(AfterResourceStorageInitializationEvent $event): void
{
$storage = $event->getStorage();
if (($GLOBALS['TYPO3_REQUEST'] ?? null) instanceof ServerRequestInterface
&& ApplicationType::fromRequest($GLOBALS['TYPO3_REQUEST'])->isBackend()
&& !$GLOBALS['BE_USER']->isAdmin()
) {
$storage->setEvaluatePermissions(true);
if ($storage->getUid() > 0) {
$storage->setUserPermissions($GLOBALS['BE_USER']->getFilePermissionsForStorage($storage));
} else {
$storage->setEvaluatePermissions(false);
}
$this->addFileMountsToStorage($storage);
}
}
/**
* Adds file mounts from the user's file mount records
*/
private function addFileMountsToStorage(ResourceStorage $storage)
{
foreach ($GLOBALS['BE_USER']->getFileMountRecords() as $fileMountRow) {
if (!str_contains($fileMountRow['identifier'], ':')) {
// Skip record since the file mount identifier is invalid
continue;
}
[$base, $path] = GeneralUtility::trimExplode(':', $fileMountRow['identifier'], false, 2);
if ((int)$base === (int)$storage->getUid()) {
try {
$storage->addFileMount($path, $fileMountRow);
} catch (FolderDoesNotExistException $e) {
// That file mount does not seem to be valid, fail silently
}
}
}
}
}