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NotModifiedMiddleware.php 1.9 KB

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  1. <?php
  2. declare(strict_types=1);
  3. /**
  4. * @copyright Copyright (c) 2020, Roeland Jago Douma <roeland@famdouma.nl>
  5. *
  6. * @author Roeland Jago Douma <roeland@famdouma.nl>
  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. */
  24. namespace OC\AppFramework\Middleware;
  25. use OCP\AppFramework\Http;
  26. use OCP\AppFramework\Http\Response;
  27. use OCP\AppFramework\Middleware;
  28. use OCP\IRequest;
  29. class NotModifiedMiddleware extends Middleware {
  30. /** @var IRequest */
  31. private $request;
  32. public function __construct(IRequest $request) {
  33. $this->request = $request;
  34. }
  35. public function afterController($controller, $methodName, Response $response) {
  36. $etagHeader = $this->request->getHeader('IF_NONE_MATCH');
  37. if ($etagHeader !== '' && $response->getETag() !== null && trim($etagHeader) === '"' . $response->getETag() . '"') {
  38. $response->setStatus(Http::STATUS_NOT_MODIFIED);
  39. return $response;
  40. }
  41. $modifiedSinceHeader = $this->request->getHeader('IF_MODIFIED_SINCE');
  42. if ($modifiedSinceHeader !== '' && $response->getLastModified() !== null && trim($modifiedSinceHeader) === $response->getLastModified()->format(\DateTimeInterface::RFC2822)) {
  43. $response->setStatus(Http::STATUS_NOT_MODIFIED);
  44. return $response;
  45. }
  46. return $response;
  47. }
  48. }