143 lines
3.8 KiB
PHP
143 lines
3.8 KiB
PHP
<?php
|
|
|
|
namespace Sabre\CalDAV;
|
|
|
|
use Sabre\DAV;
|
|
use Sabre\VObject;
|
|
|
|
/**
|
|
* ICS Exporter
|
|
*
|
|
* This plugin adds the ability to export entire calendars as .ics files.
|
|
* This is useful for clients that don't support CalDAV yet. They often do
|
|
* support ics files.
|
|
*
|
|
* @copyright Copyright (C) 2007-2015 fruux GmbH (https://fruux.com/).
|
|
* @author Evert Pot (http://evertpot.com/)
|
|
* @license http://sabre.io/license/ Modified BSD License
|
|
*/
|
|
class ICSExportPlugin extends DAV\ServerPlugin {
|
|
|
|
/**
|
|
* Reference to Server class
|
|
*
|
|
* @var \Sabre\DAV\Server
|
|
*/
|
|
protected $server;
|
|
|
|
/**
|
|
* Initializes the plugin and registers event handlers
|
|
*
|
|
* @param \Sabre\DAV\Server $server
|
|
* @return void
|
|
*/
|
|
public function initialize(DAV\Server $server) {
|
|
|
|
$this->server = $server;
|
|
$this->server->subscribeEvent('beforeMethod',array($this,'beforeMethod'), 90);
|
|
|
|
}
|
|
|
|
/**
|
|
* 'beforeMethod' event handles. This event handles intercepts GET requests ending
|
|
* with ?export
|
|
*
|
|
* @param string $method
|
|
* @param string $uri
|
|
* @return bool
|
|
*/
|
|
public function beforeMethod($method, $uri) {
|
|
|
|
if ($method!='GET') return;
|
|
if ($this->server->httpRequest->getQueryString()!='export') return;
|
|
|
|
// splitting uri
|
|
list($uri) = explode('?',$uri,2);
|
|
|
|
$node = $this->server->tree->getNodeForPath($uri);
|
|
|
|
if (!($node instanceof Calendar)) return;
|
|
|
|
// Checking ACL, if available.
|
|
if ($aclPlugin = $this->server->getPlugin('acl')) {
|
|
$aclPlugin->checkPrivileges($uri, '{DAV:}read');
|
|
}
|
|
|
|
$this->server->httpResponse->setHeader('Content-Type','text/calendar');
|
|
$this->server->httpResponse->sendStatus(200);
|
|
|
|
$nodes = $this->server->getPropertiesForPath($uri, array(
|
|
'{' . Plugin::NS_CALDAV . '}calendar-data',
|
|
),1);
|
|
|
|
$this->server->httpResponse->sendBody($this->generateICS($nodes));
|
|
|
|
// Returning false to break the event chain
|
|
return false;
|
|
|
|
}
|
|
|
|
/**
|
|
* Merges all calendar objects, and builds one big ics export
|
|
*
|
|
* @param array $nodes
|
|
* @return string
|
|
*/
|
|
public function generateICS(array $nodes) {
|
|
|
|
$calendar = new VObject\Component\VCalendar();
|
|
$calendar->version = '2.0';
|
|
if (DAV\Server::$exposeVersion) {
|
|
$calendar->prodid = '-//SabreDAV//SabreDAV ' . DAV\Version::VERSION . '//EN';
|
|
} else {
|
|
$calendar->prodid = '-//SabreDAV//SabreDAV//EN';
|
|
}
|
|
$calendar->calscale = 'GREGORIAN';
|
|
|
|
$collectedTimezones = array();
|
|
|
|
$timezones = array();
|
|
$objects = array();
|
|
|
|
foreach($nodes as $node) {
|
|
|
|
if (!isset($node[200]['{' . Plugin::NS_CALDAV . '}calendar-data'])) {
|
|
continue;
|
|
}
|
|
$nodeData = $node[200]['{' . Plugin::NS_CALDAV . '}calendar-data'];
|
|
|
|
$nodeComp = VObject\Reader::read($nodeData);
|
|
|
|
foreach($nodeComp->children() as $child) {
|
|
|
|
switch($child->name) {
|
|
case 'VEVENT' :
|
|
case 'VTODO' :
|
|
case 'VJOURNAL' :
|
|
$objects[] = $child;
|
|
break;
|
|
|
|
// VTIMEZONE is special, because we need to filter out the duplicates
|
|
case 'VTIMEZONE' :
|
|
// Naively just checking tzid.
|
|
if (in_array((string)$child->TZID, $collectedTimezones)) continue;
|
|
|
|
$timezones[] = $child;
|
|
$collectedTimezones[] = $child->TZID;
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
foreach($timezones as $tz) $calendar->add($tz);
|
|
foreach($objects as $obj) $calendar->add($obj);
|
|
|
|
return $calendar->serialize();
|
|
|
|
}
|
|
|
|
}
|