gnu-social/actions/attachment_thumbnail.php

96 lines
3.5 KiB
PHP

<?php
/**
* StatusNet, the distributed open-source microblogging tool
*
* Show notice attachments
*
* PHP version 5
*
* LICENCE: This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* @category Personal
* @package StatusNet
* @author Evan Prodromou <evan@status.net>
* @copyright 2008-2009 StatusNet, Inc.
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
* @link http://status.net/
*/
if (!defined('GNUSOCIAL')) { exit(1); }
/**
* Show notice attachments
*
* @category Personal
* @package StatusNet
* @author Evan Prodromou <evan@status.net>
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
* @link http://status.net/
*/
class Attachment_thumbnailAction extends AttachmentAction
{
protected $thumb_w = null; // max width
protected $thumb_h = null; // max height
protected $thumb_c = null; // crop?
protected function doPreparation()
{
parent::doPreparation();
$this->thumb_w = $this->int('w');
$this->thumb_h = $this->int('h');
$this->thumb_c = $this->boolean('c');
}
/**
* Show an inline representation of an attachment of the size
* requested in the GET variables (read in the constructor). Tries
* to send the most appropriate file with the correct size and
* headers or displays an error if it's not possible.
*/
public function showPage()
{
// Returns a File_thumbnail object or throws exception if not available
try {
$thumbnail = $this->attachment->getThumbnail($this->thumb_w, $this->thumb_h, $this->thumb_c);
$file = $thumbnail->getFile();
} catch (UseFileAsThumbnailException $e) {
// With this exception, the file exists locally
$file = $e->file;
} catch(FileNotFoundException $e) {
$this->clientError(_('No such attachment'), 404);
}
// Checks file exists or throws FileNotFoundException
$filepath = $file->getFileOrThumbnailPath($thumbnail);
$filesize = $this->attachment->getFileOrThumbnailSize($thumbnail);
$mimetype = $file->getFileOrThumbnailMimetype($thumbnail);
$filename = MediaFile::getDisplayName($file);
// Disable errors, to not mess with the file contents (suppress errors in case access to this
// function is blocked, like in some shared hosts). Automatically reset at the end of the
// script execution, and we don't want to have any more errors until then, so don't reset it
@ini_set('display_errors', 0);
header("Content-Description: File Transfer");
header("Content-Type: {$mimetype}");
header("Content-Disposition: inline; filename=\"{$filename}\"");
header('Expires: 0');
header('Content-Transfer-Encoding: binary');
AttachmentAction::sendFile($filepath, $filesize);
}
}