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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\Core\Resource;
use TYPO3\CMS\Backend\Utility\BackendUtility;
use TYPO3\CMS\Core\Authentication\BackendUserAuthentication;
use TYPO3\CMS\Core\EventDispatcher\EventDispatcher;
use TYPO3\CMS\Core\Resource\Event\AfterDefaultUploadFolderWasResolvedEvent;
use TYPO3\CMS\Core\Resource\Exception\FolderDoesNotExistException;
/**
* Finds the best matching upload folder for a specific backend user
* when uploading or selecting files, based on UserTSconfig or PageTSconfig
*/
class DefaultUploadFolderResolver
{
public function __construct(
protected readonly ResourceFactory $resourceFactory,
protected readonly EventDispatcher $eventDispatcher,
) {}
public function resolve(BackendUserAuthentication $user, int $pid = null, string $table = null, string $field = null): Folder | bool
{
$uploadFolder = $this->getDefaultUploadFolderForUser($user);
$uploadFolder = $this->getDefaultUploadFolderForPage($pid) ?? $uploadFolder;
$uploadFolder = $this->eventDispatcher->dispatch(
new AfterDefaultUploadFolderWasResolvedEvent($uploadFolder, $pid, $table, $field)
)->getUploadFolder() ?? $uploadFolder;
$uploadFolder = $uploadFolder ?? $this->getDefaultUploadFolder($user);
return $uploadFolder instanceof Folder ? $uploadFolder : false;
}
public function getDefaultUploadFolderForUser(BackendUserAuthentication $backendUser): ?Folder
{
$uploadFolder = $backendUser->getTSConfig()['options.']['defaultUploadFolder'] ?? '';
return $this->resolveFolder($uploadFolder);
}
public function getDefaultUploadFolderForPage(?int $pid): ?Folder
{
$uploadFolder = BackendUtility::getPagesTSconfig($pid)['options.']['defaultUploadFolder'] ?? '';
return $this->resolveFolder($uploadFolder);
}
protected function resolveFolder(string $uploadPath): ?Folder
{
$uploadFolder = null;
if ($uploadPath) {
try {
$uploadFolder = $this->resourceFactory->getFolderObjectFromCombinedIdentifier($uploadPath);
} catch (FolderDoesNotExistException $e) {
}
}
return $uploadFolder;
}
/**
* Detects the first default folder of the first storage that the backend user has access to.
* If the default storage is not available, all other storages are then checked as well.
*
* @param BackendUserAuthentication $backendUser
* @return Folder|null
*/
protected function getDefaultUploadFolder(BackendUserAuthentication $backendUser): ?Folder
{
$uploadFolder = null;
foreach ($backendUser->getFileStorages() as $storage) {
if ($storage->isDefault() && $storage->isWritable()) {
try {
$uploadFolder = $storage->getDefaultFolder();
if ($uploadFolder->checkActionPermission('write')) {
break;
}
$uploadFolder = null;
} catch (Exception $folderAccessException) {
// If the folder is not accessible (no permissions / does not exist) we skip this one.
}
break;
}
}
if (!$uploadFolder instanceof Folder) {
foreach ($backendUser->getFileStorages() as $storage) {
if ($storage->isWritable()) {
try {
$uploadFolder = $storage->getDefaultFolder();
if ($uploadFolder->checkActionPermission('write')) {
break;
}
$uploadFolder = null;
} catch (Exception $folderAccessException) {
// If the folder is not accessible (no permissions / does not exist) try the next one.
}
}
}
}
return $uploadFolder;
}
}