<?php /** * StatusNet, the distributed open-source microblogging tool * * Returns a given file attachment, allowing private sites to only allow * access to file attachments after login. * * 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 Jeffery To <jeffery.to@gmail.com> * @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('STATUSNET') && !defined('LACONICA')) { exit(1); } require_once 'MIME/Type.php'; /** * Action for getting a file attachment * * @category Personal * @package StatusNet * @author Jeffery To <jeffery.to@gmail.com> * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0 * @link http://status.net/ */ class GetfileAction extends Action { /** * Path of file to return */ var $path = null; /** * Get file name * * @param array $args $_REQUEST array * * @return success flag */ function prepare($args) { parent::prepare($args); $filename = $this->trimmed('filename'); $path = null; if ($filename) { $path = common_config('attachments', 'dir') . $filename; } if (empty($path) or !file_exists($path)) { $this->clientError(_('No such file.'), 404); return false; } if (!is_readable($path)) { $this->clientError(_('Cannot read file.'), 403); return false; } $this->path = $path; return true; } /** * Is this page read-only? * * @return boolean true */ function isReadOnly($args) { return true; } /** * Last-modified date for file * * @return int last-modified date as unix timestamp */ function lastModified() { return filemtime($this->path); } /** * etag for file * * This returns the same data (inode, size, mtime) as Apache would, * but in decimal instead of hex. * * @return string etag http header */ function etag() { $stat = stat($this->path); return '"' . $stat['ino'] . '-' . $stat['size'] . '-' . $stat['mtime'] . '"'; } /** * Handle input, produce output * * @param array $args $_REQUEST contents * * @return void */ function handle($args) { // undo headers set by PHP sessions $sec = session_cache_expire() * 60; header('Expires: ' . date(DATE_RFC1123, time() + $sec)); header('Cache-Control: public, max-age=' . $sec); header('Pragma: public'); parent::handle($args); $path = $this->path; header('Content-Type: ' . MIME_Type::autoDetect($path)); readfile($path); } }