<?php
namespace Sabre\CalDAV\Notifications;
use Sabre\DAV;
use Sabre\DAV\INode as BaseINode;
use Sabre\DAV\PropFind;
use Sabre\DAV\Server;
use Sabre\DAV\ServerPlugin;
use Sabre\DAVACL;
use Sabre\HTTP\RequestInterface;
use Sabre\HTTP\ResponseInterface;
/**
* Notifications plugin
*
* This plugin implements several features required by the caldav-notification
* draft specification.
*
* Before version 2.1.0 this functionality was part of Sabre\CalDAV\Plugin but
* this has since been split up.
*
* @copyright Copyright (C) fruux GmbH (https://fruux.com/)
* @author Evert Pot (http://evertpot.com/)
* @license http://sabre.io/license/ Modified BSD License
*/
class Plugin extends ServerPlugin {
/**
* This is the namespace for the proprietary calendarserver extensions
*/
const NS_CALENDARSERVER = 'http://calendarserver.org/ns/';
/**
* Reference to the main server object.
*
* @var Server
*/
protected $server;
/**
* Returns a plugin name.
*
* Using this name other plugins will be able to access other plugins
* using \Sabre\DAV\Server::getPlugin
*
* @return string
*/
function getPluginName() {
return 'notifications';
}
/**
* 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
* @return void
*/
function initialize(Server $server) {
$this->server = $server;
$server->on('method:GET', [$this, 'httpGet'], 90);
$server->on('propFind', [$this, 'propFind']);
$server->xml->namespaceMap[self::NS_CALENDARSERVER] = 'cs';
$server->resourceTypeMapping['\\Sabre\\CalDAV\\Notifications\\ICollection'] = '{' . self::NS_CALENDARSERVER . '}notification';
array_push($server->protectedProperties,
'{' . self::NS_CALENDARSERVER . '}notification-URL',
'{' . self::NS_CALENDARSERVER . '}notificationtype'
);
}
/**
* PropFind
*
* @param PropFind $propFind
* @param BaseINode $node
* @return void
*/
function propFind(PropFind $propFind, BaseINode $node) {
$caldavPlugin = $this->server->getPlugin('caldav');
if ($node instanceof DAVACL\IPrincipal) {
$principalUrl = $node->getPrincipalUrl();
// notification-URL property
$propFind->handle('{' . self::NS_CALENDARSERVER . '}notification-URL', function() use ($principalUrl, $caldavPlugin) {
$notificationPath = $caldavPlugin->getCalendarHomeForPrincipal($principalUrl) . '/notifications/';
return new DAV\Xml\Property\Href($notificationPath);
});
}
if ($node instanceof INode) {
$propFind->handle(
'{' . self::NS_CALENDARSERVER . '}notificationtype',
[$node, 'getNotificationType']
);
}
}
/**
* This event is triggered before the usual GET request handler.
*
* We use this to intercept GET calls to notification nodes, and return the
* proper response.
*
* @param RequestInterface $request
* @param ResponseInterface $response
* @return void
*/
function httpGet(RequestInterface $request, ResponseInterface $response) {
$path = $request->getPath();
try {
$node = $this->server->tree->getNodeForPath($path);
} catch (DAV\Exception\NotFound $e) {
return;
}
if (!$node instanceof INode)
return;
$writer = $this->server->xml->getWriter();
$writer->contextUri = $this->server->getBaseUri();
$writer->openMemory();
$writer->startDocument('1.0', 'UTF-8');
$writer->startElement('{http://calendarserver.org/ns/}notification');
$node->getNotificationType()->xmlSerializeFull($writer);
$writer->endElement();
$response->setHeader('Content-Type', 'application/xml');
$response->setHeader('ETag', $node->getETag());
$response->setStatus(200);
$response->setBody($writer->outputMemory());
// Return false to break the event chain.
return false;
}
/**
* Returns a bunch of meta-data about the plugin.
*
* Providing this information is optional, and is mainly displayed by the
* Browser plugin.
*
* The description key in the returned array may contain html and will not
* be sanitized.
*
* @return array
*/
function getPluginInfo() {
return [
'name' => $this->getPluginName(),
'description' => 'Adds support for caldav-notifications, which is required to enable caldav-sharing.',
'link' => 'http://sabre.io/dav/caldav-sharing/',
];
}
}
