diff options
Diffstat (limited to 'vendor/sabre/dav/lib/Sabre/CalDAV/ICSExportPlugin.php')
-rw-r--r-- | vendor/sabre/dav/lib/Sabre/CalDAV/ICSExportPlugin.php | 142 |
1 files changed, 142 insertions, 0 deletions
diff --git a/vendor/sabre/dav/lib/Sabre/CalDAV/ICSExportPlugin.php b/vendor/sabre/dav/lib/Sabre/CalDAV/ICSExportPlugin.php new file mode 100644 index 000000000..aa0637295 --- /dev/null +++ b/vendor/sabre/dav/lib/Sabre/CalDAV/ICSExportPlugin.php @@ -0,0 +1,142 @@ +<?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) 2007-2013 fruux GmbH (https://fruux.com/). + * @author Evert Pot (http://evertpot.com/) + * @license http://code.google.com/p/sabredav/wiki/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(); + + } + +} |