150 lines
3.5 KiB
PHP
150 lines
3.5 KiB
PHP
<?php
|
|
|
|
declare(strict_types=1);
|
|
|
|
/**
|
|
* @copyright 2018 Georg Ehrke <oc.list@georgehrke.com>
|
|
*
|
|
* @author Georg Ehrke <oc.list@georgehrke.com>
|
|
* @author Roeland Jago Douma <roeland@famdouma.nl>
|
|
*
|
|
* @license GNU AGPL version 3 or any later version
|
|
*
|
|
* 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/>.
|
|
*
|
|
*/
|
|
|
|
namespace OCA\DAV\CalDAV\WebcalCaching;
|
|
|
|
use OCA\DAV\CalDAV\CalendarHome;
|
|
use OCP\IRequest;
|
|
use Sabre\DAV\Exception\NotFound;
|
|
use Sabre\DAV\Server;
|
|
use Sabre\DAV\ServerPlugin;
|
|
use Sabre\HTTP\RequestInterface;
|
|
use Sabre\HTTP\ResponseInterface;
|
|
|
|
class Plugin extends ServerPlugin {
|
|
|
|
/**
|
|
* list of regular expressions for calendar user agents,
|
|
* that do not support subscriptions on their own
|
|
*
|
|
* @var string[]
|
|
*/
|
|
const ENABLE_FOR_CLIENTS = [];
|
|
|
|
/**
|
|
* @var bool
|
|
*/
|
|
private $enabled=false;
|
|
|
|
/**
|
|
* @var Server
|
|
*/
|
|
private $server;
|
|
|
|
/**
|
|
* Plugin constructor.
|
|
*
|
|
* @param IRequest $request
|
|
*/
|
|
public function __construct(IRequest $request) {
|
|
if ($request->isUserAgent(self::ENABLE_FOR_CLIENTS)) {
|
|
$this->enabled = true;
|
|
}
|
|
|
|
$magicHeader = $request->getHeader('X-NC-CalDAV-Webcal-Caching');
|
|
if ($magicHeader === 'On') {
|
|
$this->enabled = true;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* 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 Server $server
|
|
*/
|
|
public function initialize(Server $server) {
|
|
$this->server = $server;
|
|
$server->on('beforeMethod:*', [$this, 'beforeMethod']);
|
|
}
|
|
|
|
/**
|
|
* @param RequestInterface $request
|
|
* @param ResponseInterface $response
|
|
*/
|
|
public function beforeMethod(RequestInterface $request, ResponseInterface $response) {
|
|
if (!$this->enabled) {
|
|
return;
|
|
}
|
|
|
|
$path = $request->getPath();
|
|
$pathParts = explode('/', ltrim($path, '/'));
|
|
if (\count($pathParts) < 2) {
|
|
return;
|
|
}
|
|
|
|
// $calendarHomePath will look like: calendars/username
|
|
$calendarHomePath = $pathParts[0] . '/' . $pathParts[1];
|
|
try {
|
|
$calendarHome = $this->server->tree->getNodeForPath($calendarHomePath);
|
|
if (!($calendarHome instanceof CalendarHome)) {
|
|
//how did we end up here?
|
|
return;
|
|
}
|
|
|
|
$calendarHome->enableCachedSubscriptionsForThisRequest();
|
|
} catch(NotFound $ex) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @return bool
|
|
*/
|
|
public function isCachingEnabledForThisRequest():bool {
|
|
return $this->enabled;
|
|
}
|
|
|
|
/**
|
|
* This method should return a list of server-features.
|
|
*
|
|
* This is for example 'versioning' and is added to the DAV: header
|
|
* in an OPTIONS response.
|
|
*
|
|
* @return string[]
|
|
*/
|
|
public function getFeatures():array {
|
|
return ['nc-calendar-webcal-cache'];
|
|
}
|
|
|
|
/**
|
|
* Returns a plugin name.
|
|
*
|
|
* Using this name other plugins will be able to access other plugins
|
|
* using Sabre\DAV\Server::getPlugin
|
|
*
|
|
* @return string
|
|
*/
|
|
public function getPluginName():string {
|
|
return 'nc-calendar-webcal-cache';
|
|
}
|
|
}
|