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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\Core\Http\JsonResponse;
use TYPO3\CMS\Core\LinkHandling\LinkService;
use TYPO3\CMS\Core\Localization\LanguageService;
use TYPO3\CMS\Core\Messaging\FlashMessage;
use TYPO3\CMS\Core\Messaging\FlashMessageQueue;
use TYPO3\CMS\Core\Resource\Exception\InsufficientFileAccessPermissionsException;
use TYPO3\CMS\Core\Resource\File;
use TYPO3\CMS\Core\Resource\Folder;
use TYPO3\CMS\Core\Resource\ResourceFactory;
use TYPO3\CMS\Core\Type\ContextualFeedbackSeverity;
/**
* @internal
*/
#[Controller]
final class LinkController
{
public function __construct(
protected readonly LinkService $linkService,
protected readonly ResourceFactory $resourceFactory
) {}
public function resourceAction(ServerRequestInterface $request): ResponseInterface
{
$identifier = $request->getParsedBody()['identifier'] ?? null;
$link = null;
$resource = null;
if ($identifier) {
$resource = $this->resourceFactory->retrieveFileOrFolderObject($identifier);
}
try {
if (!$resource instanceof File && !$resource instanceof Folder) {
throw new \InvalidArgumentException('Resource must be a file or a folder', 1679039649);
}
if ($resource->getStorage()->getUid() === 0) {
throw new InsufficientFileAccessPermissionsException('You are not allowed to access files outside your storages', 1679039650);
}
if ($resource instanceof File) {
$parameters = [
'type' => LinkService::TYPE_FILE,
'file' => $resource,
];
}
if ($resource instanceof Folder) {
$parameters = [
'type' => LinkService::TYPE_FOLDER,
'folder' => $resource,
];
}
$link = $this->linkService->asString($parameters);
} catch (\Exception $exception) {
$message = match ($exception->getCode()) {
1679039649 => $this->getLanguageService()->sL('LLL:EXT:backend/Resources/Private/Language/locallang_resource.xlf:ajax.error.message.resourceNotFileOrFolder'),
1679039650 => $this->getLanguageService()->sL('LLL:EXT:backend/Resources/Private/Language/locallang_resource.xlf:ajax.error.message.resourceOutsideOfStorages'),
default => $exception->getMessage(),
};
return new JsonResponse($this->getResponseData(false, $message));
}
return new JsonResponse($this->getResponseData(true, null, $link));
}
/**
* Prepare response data for a JSON response
*/
protected function getResponseData(bool $success, ?string $message = null, ?string $link = null): array
{
$flashMessageQueue = new FlashMessageQueue('backend');
if ($message) {
$flashMessageQueue->enqueue(
new FlashMessage(
$message,
$this->getLanguageService()->sL('LLL:EXT:backend/Resources/Private/Language/locallang_resource.xlf:ajax.' . ($success ? 'success' : 'error')),
$success ? ContextualFeedbackSeverity::OK : ContextualFeedbackSeverity::ERROR
)
);
}
return [
'success' => $success,
'status' => $flashMessageQueue,
'link' => $link,
];
}
protected function getLanguageService(): LanguageService
{
return $GLOBALS['LANG'];
}
}