gnu-social/actions/attachment_thumbnail.php

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<?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
2009-08-26 07:16:46 +09:00
* @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
2009-08-26 07:16:46 +09:00
* @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');
}
public function showPage()
{
// Returns a File_thumbnail object or throws exception if not available
try {
$file = $this->attachment->getThumbnail($this->thumb_w, $this->thumb_h, $this->thumb_c)->getFile();
} catch (UseFileAsThumbnailException $e) {
// With this exception, the file exists locally
$file = $e->file;
}
if (!$file->isLocal()) {
// Not locally stored, redirect to the URL the file came from
// Don't use getURL because it can give us a local URL, which we don't want
common_redirect($file->url, 302);
} else {
$filepath = $this->attachment->getPath();
$filename = MediaFile::getDisplayName($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: {$file->mimetype}");
header("Content-Disposition: inline; filename=\"{$filename}\"");
header('Expires: 0');
header('Content-Transfer-Encoding: binary');
$filesize = $this->file->size;
// 'if available', it says, so ensure we have it
if (empty($filesize)) {
$filesize = filesize($this->attachment->filename);
}
header("Content-Length: {$filesize}");
// header('Cache-Control: private, no-transform, no-store, must-revalidate');
$ret = @readfile($filepath);
if ($ret === false || $ret !== $filesize) {
common_log(LOG_ERR, "The lengths of the file as recorded on the DB (or on disk) for the file " .
"{$filepath}, with id={$this->attachment->id} differ from what was sent to the user.");
}
}
}
}