attachment_thumbnail.php 3.5 KB

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  1. <?php
  2. /**
  3. * StatusNet, the distributed open-source microblogging tool
  4. *
  5. * Show notice attachments
  6. *
  7. * PHP version 5
  8. *
  9. * LICENCE: This program is free software: you can redistribute it and/or modify
  10. * it under the terms of the GNU Affero General Public License as published by
  11. * the Free Software Foundation, either version 3 of the License, or
  12. * (at your option) any later version.
  13. *
  14. * This program is distributed in the hope that it will be useful,
  15. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  17. * GNU Affero General Public License for more details.
  18. *
  19. * You should have received a copy of the GNU Affero General Public License
  20. * along with this program. If not, see <http://www.gnu.org/licenses/>.
  21. *
  22. * @category Personal
  23. * @package StatusNet
  24. * @author Evan Prodromou <evan@status.net>
  25. * @copyright 2008-2009 StatusNet, Inc.
  26. * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
  27. * @link http://status.net/
  28. */
  29. if (!defined('GNUSOCIAL')) { exit(1); }
  30. /**
  31. * Show notice attachments
  32. *
  33. * @category Personal
  34. * @package StatusNet
  35. * @author Evan Prodromou <evan@status.net>
  36. * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
  37. * @link http://status.net/
  38. */
  39. class Attachment_thumbnailAction extends AttachmentAction
  40. {
  41. protected $thumb_w = null; // max width
  42. protected $thumb_h = null; // max height
  43. protected $thumb_c = null; // crop?
  44. protected function doPreparation()
  45. {
  46. parent::doPreparation();
  47. $this->thumb_w = $this->int('w');
  48. $this->thumb_h = $this->int('h');
  49. $this->thumb_c = $this->boolean('c');
  50. }
  51. /**
  52. * Show an inline representation of an attachment of the size
  53. * requested in the GET variables (read in the constructor). Tries
  54. * to send the most appropriate file with the correct size and
  55. * headers or displays an error if it's not possible.
  56. */
  57. public function showPage()
  58. {
  59. // Returns a File_thumbnail object or throws exception if not available
  60. try {
  61. $thumbnail = $this->attachment->getThumbnail($this->thumb_w, $this->thumb_h, $this->thumb_c);
  62. $file = $thumbnail->getFile();
  63. } catch (UseFileAsThumbnailException $e) {
  64. // With this exception, the file exists locally
  65. $file = $e->file;
  66. } catch(FileNotFoundException $e) {
  67. $this->clientError(_('No such attachment'), 404);
  68. }
  69. // Checks file exists or throws FileNotFoundException
  70. $filepath = $file->getFileOrThumbnailPath($thumbnail);
  71. $filesize = $this->attachment->getFileOrThumbnailSize($thumbnail);
  72. $mimetype = $file->getFileOrThumbnailMimetype($thumbnail);
  73. $filename = MediaFile::getDisplayName($file);
  74. // Disable errors, to not mess with the file contents (suppress errors in case access to this
  75. // function is blocked, like in some shared hosts). Automatically reset at the end of the
  76. // script execution, and we don't want to have any more errors until then, so don't reset it
  77. @ini_set('display_errors', 0);
  78. header("Content-Description: File Transfer");
  79. header("Content-Type: {$mimetype}");
  80. header("Content-Disposition: inline; filename=\"{$filename}\"");
  81. header('Expires: 0');
  82. header('Content-Transfer-Encoding: binary');
  83. AttachmentAction::sendFile($filepath, $filesize);
  84. }
  85. }