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<?php
/**
* @copyright Copyright (c) 2016, ownCloud, Inc.
*
* @author Bart Visscher <bartv@thisnet.nl>
* @author Joas Schilling <coding@schilljs.com>
* @author Morris Jobke <hey@morrisjobke.de>
* @author Thomas Müller <thomas.mueller@tmit.eu>
* @author Vincent Petry <pvince81@owncloud.com>
*
* @license AGPL-3.0
*
* This code is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* 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, version 3,
* along with this program. If not, see <http://www.gnu.org/licenses/>
*
*/
namespace OCA\DAV\Connector\Sabre;
use OCP\IConfig;
use OCP\Util;
use Sabre\DAV\Exception\ServiceUnavailable;
use Sabre\DAV\ServerPlugin;
class MaintenancePlugin extends ServerPlugin {
/** @var IConfig */
private $config;
/**
* Reference to main server object
*
* @var Server
*/
private $server;
/**
* @param IConfig $config
*/
public function __construct(IConfig $config = null) {
$this->config = $config;
if (is_null($config)) {
$this->config = \OC::$server->getConfig();
}
}
/**
* This initializes the plugin.
*
* This function is called by \Sabre\DAV\Server, after
* addPlugin is called.
*
* This method should set up the required event subscriptions.
*
* @param \Sabre\DAV\Server $server
* @return void
*/
public function initialize(\Sabre\DAV\Server $server) {
$this->server = $server;
$this->server->on('beforeMethod', array($this, 'checkMaintenanceMode'), 1);
}
/**
* This method is called before any HTTP method and returns http status code 503
* in case the system is in maintenance mode.
*
* @throws ServiceUnavailable
* @return bool
*/
public function checkMaintenanceMode() {
if ($this->config->getSystemValueBool('maintenance')) {
throw new ServiceUnavailable('System in maintenance mode.');
}
if (Util::needUpgrade()) {
throw new ServiceUnavailable('Upgrade needed');
}
return true;
}
}