ReferenceController.php 2.5 KB

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  1. <?php
  2. declare(strict_types=1);
  3. /**
  4. * @copyright Copyright (c) 2022 Julius Härtl <jus@bitgrid.net>
  5. *
  6. * @author Julius Härtl <jus@bitgrid.net>
  7. *
  8. * @license GNU AGPL version 3 or any later version
  9. *
  10. * This program is free software: you can redistribute it and/or modify
  11. * it under the terms of the GNU Affero General Public License as
  12. * published by the Free Software Foundation, either version 3 of the
  13. * License, or (at your option) any later version.
  14. *
  15. * This program is distributed in the hope that it will be useful,
  16. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  18. * GNU Affero General Public License for more details.
  19. *
  20. * You should have received a copy of the GNU Affero General Public License
  21. * along with this program. If not, see <http://www.gnu.org/licenses/>.
  22. */
  23. namespace OC\Core\Controller;
  24. use OCP\AppFramework\Http\Response;
  25. use OCP\Collaboration\Reference\IReferenceManager;
  26. use OCP\AppFramework\Controller;
  27. use OCP\AppFramework\Http;
  28. use OCP\AppFramework\Http\DataDownloadResponse;
  29. use OCP\AppFramework\Http\DataResponse;
  30. use OCP\Files\AppData\IAppDataFactory;
  31. use OCP\Files\NotFoundException;
  32. use OCP\Files\NotPermittedException;
  33. use OCP\IRequest;
  34. class ReferenceController extends Controller {
  35. private IReferenceManager $referenceManager;
  36. private IAppDataFactory $appDataFactory;
  37. public function __construct(string $appName, IRequest $request, IReferenceManager $referenceManager, IAppDataFactory $appDataFactory) {
  38. parent::__construct($appName, $request);
  39. $this->referenceManager = $referenceManager;
  40. $this->appDataFactory = $appDataFactory;
  41. }
  42. /**
  43. * @PublicPage
  44. * @NoCSRFRequired
  45. * @param string $referenceId the reference cache key
  46. * @return Response
  47. */
  48. public function preview(string $referenceId): Response {
  49. $reference = $this->referenceManager->getReferenceByCacheKey($referenceId);
  50. try {
  51. $appData = $this->appDataFactory->get('core');
  52. $folder = $appData->getFolder('opengraph');
  53. $file = $folder->getFile($referenceId);
  54. $contentType = $reference === null || $reference->getImageContentType() === null
  55. ? $file->getMimeType()
  56. : $reference->getImageContentType();
  57. $response = new DataDownloadResponse(
  58. $file->getContent(),
  59. $referenceId,
  60. $contentType
  61. );
  62. } catch (NotFoundException|NotPermittedException $e) {
  63. $response = new DataResponse('', Http::STATUS_NOT_FOUND);
  64. }
  65. $response->cacheFor(3600, false, true);
  66. return $response;
  67. }
  68. }