mirror of
https://github.com/EGroupware/egroupware.git
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1071 lines
35 KiB
PHP
1071 lines
35 KiB
PHP
<?php
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/**
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* EGroupware: CalDAV / GroupDAV access: calendar handler
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*
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* @link http://www.egroupware.org
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* @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
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* @package calendar
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* @subpackage groupdav
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* @author Ralf Becker <RalfBecker-AT-outdoor-training.de>
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* @copyright (c) 2007-11 by Ralf Becker <RalfBecker-AT-outdoor-training.de>
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* @version $Id$
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*/
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require_once EGW_SERVER_ROOT.'/phpgwapi/inc/horde/lib/core.php';
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/**
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* eGroupWare: GroupDAV access: calendar handler
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*/
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class calendar_groupdav extends groupdav_handler
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{
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/**
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* bo class of the application
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*
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* @var calendar_boupdate
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*/
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var $bo;
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/**
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* vCalendar Instance for parsing
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*
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* @var array
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*/
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var $vCalendar;
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var $filter_prop2cal = array(
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'SUMMARY' => 'cal_title',
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'UID' => 'cal_uid',
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'DTSTART' => 'cal_start',
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'DTEND' => 'cal_end',
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// 'DURATION'
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//'RRULE' => 'recur_type',
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//'RDATE' => 'cal_start',
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//'EXRULE'
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//'EXDATE'
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//'RECURRENCE-ID'
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);
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/**
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* Does client understand exceptions to be included in VCALENDAR component of series master sharing its UID
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*
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* That also means no EXDATE for these exceptions!
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*
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* Setting it to false, should give the old behavior used in 1.6 (hopefully) no client needs that.
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*
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* @var boolean
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*/
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var $client_shared_uid_exceptions = true;
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/**
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* Are we using id, uid or caldav_name for the path/url
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*
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* Get's set in constructor to 'caldav_name' and groupdav_handler::$path_extension = ''!
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*/
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static $path_attr = 'id';
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/**
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* Constructor
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*
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* @param string $app 'calendar', 'addressbook' or 'infolog'
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* @param groupdav $groupdav calling class
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*/
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function __construct($app, groupdav $groupdav)
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{
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parent::__construct($app, $groupdav);
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$this->bo = new calendar_boupdate();
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$this->vCalendar = new Horde_iCalendar;
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// since 1.9.003 we allow clients to specify the URL when creating a new event, as specified by CalDAV
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if (version_compare($GLOBALS['egw_info']['apps']['calendar']['version'], '1.9.003', '>='))
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{
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self::$path_attr = 'caldav_name';
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groupdav_handler::$path_extension = '';
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}
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}
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/**
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* Create the path for an event
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*
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* @param array|int $event
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* @return string
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*/
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function get_path($event)
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{
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if (is_numeric($event) && self::$path_attr == 'id')
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{
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$name = $event;
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}
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else
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{
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if (!is_array($event)) $event = $this->bo->read($event);
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$name = $event[self::$path_attr];
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}
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$name .= groupdav_handler::$path_extension;
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//error_log(__METHOD__.'('.array2string($event).") path_attr='".self::$path_attr."', path_extension='".groupdav_handler::$path_extension."' returning ".array2string($name));
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return $name;
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}
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/**
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* Handle propfind in the calendar folder
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*
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* @param string $path
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* @param array $options
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* @param array &$files
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* @param int $user account_id
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* @param string $id=''
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* @return mixed boolean true on success, false on failure or string with http status (eg. '404 Not Found')
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*/
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function propfind($path,$options,&$files,$user,$id='')
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{
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if ($this->debug)
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{
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error_log(__METHOD__."($path,".array2string($options).",,$user,$id)");
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}
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if ($options['root']['name'] == 'free-busy-query')
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{
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return $this->free_busy_report($path, $options, $user);
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}
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// ToDo: add parameter to only return id & etag
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$filter = array(
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'users' => $user,
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'start' => $this->bo->now - 100*24*3600, // default one month back -30 breaks all sync recurrences
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'end' => $this->bo->now + 365*24*3600, // default one year into the future +365
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'enum_recuring' => false,
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'daywise' => false,
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'date_format' => 'server',
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'no_total' => true, // we need no total number of rows (saves extra query)
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);
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if ($this->client_shared_uid_exceptions) // do NOT return (non-virtual) exceptions
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{
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$filter['query'] = array('cal_reference' => 0);
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}
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if ($path == '/calendar/')
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{
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$filter['filter'] = 'owner';
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}
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// scheduling inbox, shows only not yet accepted or rejected events
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elseif (substr($path,-7) == '/inbox/')
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{
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$filter['filter'] = 'unknown';
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}
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// ToDo: not sure what scheduling outbox is supposed to show, leave it empty for now
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elseif (substr($path,-8) == '/outbox/')
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{
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return true;
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}
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else
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{
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$filter['filter'] = 'default'; // not rejected
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}
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// process REPORT filters or multiget href's
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if (($id || $options['root']['name'] != 'propfind') && !$this->_report_filters($options,$filter,$id))
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{
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// return empty collection, as iCal under iOS 5 had problems with returning "404 Not found" status
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// when trying to request not supported components, eg. VTODO on a calendar collection
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return true;
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}
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if ($id) $path = dirname($path).'/'; // caldav_name get's added anyway in the callback
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if ($this->debug > 1)
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{
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error_log(__METHOD__."($path,,,$user,$id) filter=".array2string($filter));
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}
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// check if we have to return the full calendar data or just the etag's
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if (!($filter['calendar_data'] = $options['props'] == 'all' &&
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$options['root']['ns'] == groupdav::CALDAV) && is_array($options['props']))
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{
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foreach($options['props'] as $prop)
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{
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if ($prop['name'] == 'calendar-data')
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{
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$filter['calendar_data'] = true;
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break;
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}
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}
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}
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// return iterator, calling ourself to return result in chunks
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$files['files'] = new groupdav_propfind_iterator($this,$path,$filter,$files['files']);
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return true;
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}
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/**
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* Callback for profind interator
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*
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* @param string $path
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* @param array $filter
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* @param array|boolean $start=false false=return all or array(start,num)
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* @return array with "files" array with values for keys path and props
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*/
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function propfind_callback($path,array $filter,$start=false)
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{
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if ($this->debug) $starttime = microtime(true);
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$calendar_data = $filter['calendar_data'];
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unset($filter['calendar_data']);
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$files = array();
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if (is_array($start))
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{
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$filter['offset'] = $start[0];
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$filter['num_rows'] = $start[1];
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}
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$events =& $this->bo->search($filter);
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if ($events)
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{
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// get all max user modified times at once
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foreach($events as $k => $event)
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{
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if ($this->client_shared_uid_exceptions && $event['reference'])
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{
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throw new egw_exception_assertion_failed(__METHOD__."() event=".array2string($event));
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// this exception will be handled with the series master
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unset($events[$k]);
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continue;
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}
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$ids[] = $event['id'];
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}
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$max_user_modified = $this->bo->so->max_user_modified($ids);
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foreach($events as $event)
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{
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$event['max_user_modified'] = $max_user_modified[$event['id']];
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//header('X-EGROUPWARE-EVENT-'.$event['id'].': '.$event['title'].': '.date('Y-m-d H:i:s',$event['start']).' - '.date('Y-m-d H:i:s',$event['end']));
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$props = array(
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'getcontenttype' => HTTP_WebDAV_Server::mkprop('getcontenttype', $this->agent != 'kde' ?
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'text/calendar; charset=utf-8; component=VEVENT' : 'text/calendar'),
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);
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//error_log(__FILE__ . __METHOD__ . "Calendar Data : $calendar_data");
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if ($calendar_data)
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{
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$content = $this->iCal($event, $filter['users'], strpos($path, '/inbox/') !== false ? 'PUBLISH' : null);
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$props['getcontentlength'] = bytes($content);
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$props[] = HTTP_WebDAV_Server::mkprop(groupdav::CALDAV,'calendar-data',$content);
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}
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$files[] = $this->add_resource($path, $event, $props);
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}
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}
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if ($this->debug)
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{
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error_log(__METHOD__."($path) took ".(microtime(true) - $starttime).
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' to return '.count($files['files']).' items');
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}
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return $files;
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}
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/**
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* Process the filters from the CalDAV REPORT request
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*
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* @param array $options
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* @param array &$cal_filters
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* @param string $id
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* @return boolean true if filter could be processed, false for requesting not here supported VTODO items
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*/
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function _report_filters($options,&$cal_filters,$id)
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{
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if ($options['filters'])
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{
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// unset default start & end
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$cal_start = $cal_filters['start']; unset($cal_filters['start']);
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$cal_end = $cal_filters['end']; unset($cal_filters['end']);
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$num_filters = count($cal_filters);
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foreach($options['filters'] as $filter)
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{
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switch($filter['name'])
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{
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case 'comp-filter':
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if ($this->debug > 1) error_log(__METHOD__."($options[path],...) comp-filter='{$filter['attrs']['name']}'");
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switch($filter['attrs']['name'])
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{
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case 'VTODO':
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return false; // return nothing for now, todo: check if we can pass it on to the infolog handler
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// todos are handled by the infolog handler
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//$infolog_handler = new groupdav_infolog();
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//return $infolog_handler->propfind($options['path'],$options,$options['files'],$user,$method);
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case 'VCALENDAR':
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case 'VEVENT':
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break; // that's our default anyway
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}
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break;
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case 'prop-filter':
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if ($this->debug > 1) error_log(__METHOD__."($options[path],...) prop-filter='{$filter['attrs']['name']}'");
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$prop_filter = $filter['attrs']['name'];
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break;
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case 'text-match':
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if ($this->debug > 1) error_log(__METHOD__."($options[path],...) text-match: $prop_filter='{$filter['data']}'");
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if (!isset($this->filter_prop2cal[strtoupper($prop_filter)]))
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{
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if ($this->debug) error_log(__METHOD__."($options[path],".array2string($options).",...) unknown property '$prop_filter' --> ignored");
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}
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else
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{
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$cal_filters['query'][$this->filter_prop2cal[strtoupper($prop_filter)]] = $filter['data'];
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}
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unset($prop_filter);
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break;
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case 'param-filter':
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if ($this->debug) error_log(__METHOD__."($options[path],...) param-filter='{$filter['attrs']['name']}' not (yet) implemented!");
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break;
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case 'time-range':
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if ($this->debug > 1) error_log(__FILE__ . __METHOD__."($options[path],...) time-range={$filter['attrs']['start']}-{$filter['attrs']['end']}");
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if (!empty($filter['attrs']['start']))
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{
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$cal_filters['start'] = $this->vCalendar->_parseDateTime($filter['attrs']['start']);
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}
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if (!empty($filter['attrs']['end']))
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{
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$cal_filters['end'] = $this->vCalendar->_parseDateTime($filter['attrs']['end']);
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}
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break;
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default:
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if ($this->debug) error_log(__METHOD__."($options[path],".array2string($options).",...) unknown filter --> ignored");
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break;
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}
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}
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if (count($cal_filters) == $num_filters) // no filters set --> restore default start and end time
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{
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$cal_filters['start'] = $cal_start;
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$cal_filters['end'] = $cal_end;
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}
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}
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// multiget or propfind on a given id
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//error_log(__FILE__ . __METHOD__ . "multiget of propfind:");
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if ($options['root']['name'] == 'calendar-multiget' || $id)
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{
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// no standard time-range!
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unset($cal_filters['start']);
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unset($cal_filters['end']);
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$ids = array();
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if ($id)
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{
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$cal_filters['query'][self::$path_attr] = groupdav_handler::$path_extension ?
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basename($id,groupdav_handler::$path_extension) : $id;
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}
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else // fetch all given url's
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{
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foreach($options['other'] as $option)
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{
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if ($option['name'] == 'href')
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{
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$parts = explode('/',$option['data']);
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if (($id = array_pop($parts)))
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{
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$cal_filters['query'][self::$path_attr][] = groupdav_handler::$path_extension ?
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basename($id,groupdav_handler::$path_extension) : $id;
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}
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}
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}
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}
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if ($this->debug > 1) error_log(__FILE__ . __METHOD__ ."($options[path],...,$id) calendar-multiget: ids=".implode(',',$ids).', cal_filters='.array2string($cal_filters));
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}
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return true;
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}
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/**
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* Handle get request for an event
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*
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* @param array &$options
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* @param int $id
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* @param int $user=null account_id
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* @return mixed boolean true on success, false on failure or string with http status (eg. '404 Not Found')
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*/
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function get(&$options,$id,$user=null)
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{
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if (!is_array($event = $this->_common_get_put_delete('GET',$options,$id)))
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{
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return $event;
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}
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$options['data'] = $this->iCal($event, $user, strpos($options['path'], '/inbox/') !== false ? 'PUBLISH' : null);
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$options['mimetype'] = 'text/calendar; charset=utf-8';
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header('Content-Encoding: identity');
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header('ETag: "'.$this->get_etag($event).'"');
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return true;
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}
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/**
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* Generate an iCal for the given event
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*
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* Taking into account virtual an real exceptions for recuring events
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*
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* @param array $event
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* @param int $user=null account_id of calendar to display
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* @param string $method=null eg. 'PUBLISH' for inbox, nothing anywhere else
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* @return string
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*/
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private function iCal(array $event,$user=null, $method=null)
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{
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static $handler = null;
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if (is_null($handler)) $handler = $this->_get_handler();
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if (!$user) $user = $GLOBALS['egw_info']['user']['account_id'];
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// only return alarms in own calendar, not other users calendars
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if ($user != $GLOBALS['egw_info']['user']['account_id'])
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{
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//error_log(__METHOD__.'('.array2string($event).", $user) clearing alarms");
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$event['alarm'] = array();
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}
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$events = array($event);
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// for recuring events we have to add the exceptions
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if ($this->client_shared_uid_exceptions && $event['recur_type'] && !empty($event['uid']))
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{
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$events =& self::get_series($event['uid'],$this->bo);
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}
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elseif(!$this->client_shared_uid_exceptions && $event['reference'])
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{
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$events[0]['uid'] .= '-'.$event['id']; // force a different uid
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}
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return $handler->exportVCal($events, '2.0', $method);
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}
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/**
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* Get array with events of a series identified by its UID (master and all exceptions)
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*
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* Maybe that should be part of calendar_bo
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*
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* @param string $uid UID
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* @param calendar_bo $bo=null calendar_bo object to reuse for search call
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* @return array
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*/
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private static function &get_series($uid,calendar_bo $bo=null)
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{
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if (is_null($bo)) $bo = new calendar_bopdate();
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if (!($masterId = array_shift($bo->find_event(array('uid' => $uid), 'master')))
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|| !($master = $bo->read($masterId, 0, false, 'server')))
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{
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return array(); // should never happen
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}
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$exceptions = $master['recur_exception'];
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$events =& $bo->search(array(
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'query' => array('cal_uid' => $uid),
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'filter' => 'owner', // return all possible entries
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'daywise' => false,
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'date_format' => 'server',
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));
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$events = array_merge(array($master), $events);
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foreach($events as $k => &$recurrence)
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{
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//error_log(__FILE__.'['.__LINE__.'] '.__METHOD__.
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// "($uid)[$k]:" . array2string($recurrence));
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if (!$k) continue; // nothing to change
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if ($recurrence['id'] != $master['id']) // real exception
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{
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//error_log('real exception: '.array2string($recurrence));
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// remove from masters recur_exception, as exception is include
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// at least Lightning "understands" EXDATE as exception from what's included
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// in the whole resource / VCALENDAR component
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// not removing it causes Lightning to remove the exception itself
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if (($e = array_search($recurrence['recurrence'],$exceptions)) !== false)
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{
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unset($exceptions[$e]);
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}
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continue; // nothing to change
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}
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// now we need to check if this recurrence is an exception
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if ($master['participants'] == $recurrence['participants'])
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{
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//error_log('NO exception: '.array2string($recurrence));
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unset($events[$k]); // no exception --> remove it
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continue;
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}
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// this is a virtual exception now (no extra event/cal_id in DB)
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//error_log('virtual exception: '.array2string($recurrence));
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$recurrence['recurrence'] = $recurrence['start'];
|
|
$recurrence['reference'] = $master['id'];
|
|
$recurrence['recur_type'] = MCAL_RECUR_NONE; // is set, as this is a copy of the master
|
|
// not for included exceptions (Lightning): $master['recur_exception'][] = $recurrence['start'];
|
|
}
|
|
$events[0]['recur_exception'] = $exceptions;
|
|
return $events;
|
|
}
|
|
|
|
/**
|
|
* Handle put request for an event
|
|
*
|
|
* @param array &$options
|
|
* @param int $id
|
|
* @param int $user=null account_id of owner, default null
|
|
* @param string $prefix=null user prefix from path (eg. /ralf from /ralf/addressbook)
|
|
* @return mixed boolean true on success, false on failure or string with http status (eg. '404 Not Found')
|
|
*/
|
|
function put(&$options,$id,$user=null,$prefix=null)
|
|
{
|
|
if ($this->debug) error_log(__METHOD__."($id, $user)".print_r($options,true));
|
|
|
|
if (!$prefix) $user = null; // /infolog/ does not imply setting the current user (for new entries it's done anyway)
|
|
|
|
$return_no_access = true; // as handled by importVCal anyway and allows it to set the status for participants
|
|
$oldEvent = $this->_common_get_put_delete('PUT',$options,$id,$return_no_access);
|
|
if (!is_null($oldEvent) && !is_array($oldEvent))
|
|
{
|
|
if ($this->debug) error_log(__METHOD__.': '.print_r($oldEvent,true).function_backtrace());
|
|
return $oldEvent;
|
|
}
|
|
|
|
if (is_null($oldEvent) && ($user >= 0) && !$this->bo->check_perms(EGW_ACL_ADD, 0, $user))
|
|
{
|
|
// we have no add permission on this user's calendar
|
|
// ToDo: create event in current users calendar and invite only $user
|
|
if ($this->debug) error_log(__METHOD__."(,,$user) we have not enough rights on this calendar");
|
|
return '403 Forbidden';
|
|
}
|
|
|
|
$handler = $this->_get_handler();
|
|
$vCalendar = htmlspecialchars_decode($options['content']);
|
|
$charset = null;
|
|
if (!empty($options['content_type']))
|
|
{
|
|
$content_type = explode(';', $options['content_type']);
|
|
if (count($content_type) > 1)
|
|
{
|
|
array_shift($content_type);
|
|
foreach ($content_type as $attribute)
|
|
{
|
|
trim($attribute);
|
|
list($key, $value) = explode('=', $attribute);
|
|
switch (strtolower($key))
|
|
{
|
|
case 'charset':
|
|
$charset = strtoupper(substr($value,1,-1));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (is_array($oldEvent))
|
|
{
|
|
$eventId = $oldEvent['id'];
|
|
if ($return_no_access)
|
|
{
|
|
$retval = true;
|
|
}
|
|
else
|
|
{
|
|
$retval = '204 No Content';
|
|
|
|
// lightning will pop up the alarm, as long as the Sequence (etag) does NOT change
|
|
// --> update the etag alone, if user has no edit rights
|
|
if ($this->agent == 'lightning' && !$this->check_access(EGW_ACL_EDIT, $oldEvent) &&
|
|
isset($oldEvent['participants'][$GLOBALS['egw_info']['user']['account_id']]))
|
|
{
|
|
// just update etag in database
|
|
$GLOBALS['egw']->db->update($this->bo->so->cal_table,'cal_etag=cal_etag+1',array(
|
|
'cal_id' => $eventId,
|
|
),__LINE__,__FILE__,'calendar');
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// new entry
|
|
$eventId = -1;
|
|
$retval = '201 Created';
|
|
}
|
|
|
|
if (!($cal_id = $handler->importVCal($vCalendar, $eventId,
|
|
self::etag2value($this->http_if_match), false, 0, $this->groupdav->current_user_principal, $user, $charset, $id)))
|
|
{
|
|
if ($this->debug) error_log(__METHOD__."(,$id) eventId=$eventId: importVCal('$options[content]') returned false");
|
|
if ($eventId && $cal_id === false)
|
|
{
|
|
// ignore import failures
|
|
$cal_id = $eventId;
|
|
$retval = true;
|
|
}
|
|
else
|
|
{
|
|
return '403 Forbidden';
|
|
}
|
|
}
|
|
|
|
// we should not return an etag here, as we never store the PUT ical byte-by-byte
|
|
//header('ETag: "'.$this->get_etag($cal_id).'"');
|
|
|
|
// send GroupDAV Location header only if we dont use caldav_name as path-attribute
|
|
if ($retval !== true && self::$path_attr != 'caldav_name')
|
|
{
|
|
$path = preg_replace('|(.*)/[^/]*|', '\1/', $options['path']);
|
|
if ($this->debug) error_log(__METHOD__."(,$id,$user) cal_id=$cal_id: $retval");
|
|
header('Location: '.$this->base_uri.$path.$this->get_path($cal_id));
|
|
}
|
|
return $retval;
|
|
}
|
|
|
|
/**
|
|
* Handle post request for a schedule entry
|
|
*
|
|
* @param array &$options
|
|
* @param int $id
|
|
* @param int $user=null account_id of owner, default null
|
|
* @return mixed boolean true on success, false on failure or string with http status (eg. '404 Not Found')
|
|
*/
|
|
function post(&$options,$id,$user=null)
|
|
{
|
|
if ($this->debug) error_log(__METHOD__."($id, $user)".print_r($options,true));
|
|
|
|
$vCalendar = htmlspecialchars_decode($options['content']);
|
|
$charset = null;
|
|
if (!empty($options['content_type']))
|
|
{
|
|
$content_type = explode(';', $options['content_type']);
|
|
if (count($content_type) > 1)
|
|
{
|
|
array_shift($content_type);
|
|
foreach ($content_type as $attribute)
|
|
{
|
|
trim($attribute);
|
|
list($key, $value) = explode('=', $attribute);
|
|
switch (strtolower($key))
|
|
{
|
|
case 'charset':
|
|
$charset = strtoupper(substr($value,1,-1));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (substr($options['path'],-8) == '/outbox/')
|
|
{
|
|
if (preg_match('/^METHOD:REQUEST(\r\n|\r|\n)(.*)^BEGIN:VFREEBUSY/ism', $vCalendar))
|
|
{
|
|
if ($user != $GLOBALS['egw_info']['user']['account_id'])
|
|
{
|
|
error_log(__METHOD__."() freebusy request only allowed to own outbox!");
|
|
return '403 Forbidden';
|
|
}
|
|
// do freebusy request
|
|
return $this->outbox_freebusy_request($vCalendar, $charset, $user, $options);
|
|
}
|
|
else
|
|
{
|
|
// POST to deliver an invitation, containing http headers:
|
|
// Originator: mailto:<organizer-email>
|
|
// Recipient: mailto:<attendee-email>
|
|
// --> currently we simply ignore these posts, as EGroupware does it's own notifications based on user preferences
|
|
return '204 No Content';
|
|
}
|
|
}
|
|
if (preg_match('/^METHOD:(PUBLISH|REQUEST)(\r\n|\r|\n)(.*)^BEGIN:VEVENT/ism', $options['content']))
|
|
{
|
|
$handler = $this->_get_handler();
|
|
if (($foundEvents = $handler->search($vCalendar, null, false, $charset)))
|
|
{
|
|
$eventId = array_shift($foundEvents);
|
|
list($eventId) = explode(':', $eventId);
|
|
|
|
if (!($cal_id = $handler->importVCal($vCalendar, $eventId, null,
|
|
false, 0, $this->groupdav->current_user_principal, $user, $charset)))
|
|
{
|
|
if ($this->debug) error_log(__METHOD__."() importVCal($eventId) returned false");
|
|
}
|
|
// we should not return an etag here, as we never store the ical byte-by-byte
|
|
//header('ETag: "'.$this->get_etag($eventId).'"');
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Handle outbox freebusy request
|
|
*
|
|
* @param string $ical
|
|
* @param string $charset of ical
|
|
* @param int $user account_id of owner
|
|
* @param array &$options
|
|
* @return mixed boolean true on success, false on failure or string with http status (eg. '404 Not Found')
|
|
*/
|
|
protected function outbox_freebusy_request($ical, $charset, $user, array &$options)
|
|
{
|
|
include_once EGW_SERVER_ROOT.'/phpgwapi/inc/horde/lib/core.php';
|
|
$vcal = new Horde_iCalendar();
|
|
if (!$vcal->parsevCalendar($ical, 'VCALENDAR', $charset))
|
|
{
|
|
return '400 Bad request';
|
|
}
|
|
$version = $vcal->getAttribute('VERSION');
|
|
|
|
//echo $ical."\n";
|
|
|
|
$handler = $this->_get_handler();
|
|
$handler->setSupportedFields('groupdav');
|
|
$handler->calendarOwner = $handler->user = 0; // to NOT default owner/organizer to something
|
|
if (!($component = $vcal->getComponent(0)) ||
|
|
!($event = $handler->vevent2egw($component, $version, $handler->supportedFields, $this->groupdav->current_user_principal, 'Horde_iCalendar_vfreebusy')))
|
|
{
|
|
return '400 Bad request';
|
|
}
|
|
if ($event['owner'] != $user)
|
|
{
|
|
error_log(__METHOD__."('$ical',,$user) ORGANIZER is NOT principal!");
|
|
return '403 Forbidden';
|
|
}
|
|
//print_r($event);
|
|
$organizer = $component->getAttribute('ORGANIZER');
|
|
$attendees = (array)$component->getAttribute('ATTENDEE');
|
|
// X-CALENDARSERVER-MASK-UID specifies to exclude given event from busy-time
|
|
$mask_uid = $component->getAttribute('X-CALENDARSERVER-MASK-UID');
|
|
|
|
header('Content-type: text/xml; charset=UTF-8');
|
|
|
|
$xml = new XMLWriter;
|
|
$xml->openMemory();
|
|
$xml->startDocument('1.0', 'UTF-8');
|
|
$xml->startElementNs('C', 'schedule-response', groupdav::CALDAV);
|
|
|
|
foreach($event['participants'] as $uid => $status)
|
|
{
|
|
$xml->startElementNs('C', 'response', null);
|
|
|
|
$xml->startElementNs('C', 'recipient', null);
|
|
$xml->writeElementNs('D', 'href', 'DAV:', $attendee=array_shift($attendees));
|
|
$xml->endElement(); // recipient
|
|
|
|
if (is_numeric($uid))
|
|
{
|
|
$xml->writeElementNs('C', 'request-status', null, '2.0;Success');
|
|
$xml->writeElementNs('C', 'calendar-data', null,
|
|
$handler->freebusy($uid, $event['end'], true, 'utf-8', $event['start'], 'REPLY', array(
|
|
'UID' => $event['uid'],
|
|
'ORGANIZER' => $organizer,
|
|
'ATTENDEE' => $attendee,
|
|
)+(empty($mask_uid) || !is_string($mask_uid) ? array() : array(
|
|
'X-CALENDARSERVER-MASK-UID' => $mask_uid,
|
|
))));
|
|
}
|
|
else
|
|
{
|
|
$xml->writeElementNs('C', 'request-status', null, '3.7;Invalid calendar user');
|
|
}
|
|
$xml->endElement(); // response
|
|
}
|
|
$xml->endElement(); // schedule-response
|
|
$xml->endDocument();
|
|
echo $xml->outputMemory();
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Handle free-busy-query report
|
|
*
|
|
* @param string $path
|
|
* @param array $options
|
|
* @param int $user account_id
|
|
* @return mixed boolean true on success, false on failure or string with http status (eg. '404 Not Found')
|
|
*/
|
|
function free_busy_report($path,$options,$user)
|
|
{
|
|
if (!$this->bo->check_perms(EGW_ACL_FREEBUSY, 0, $user))
|
|
{
|
|
return '403 Forbidden';
|
|
}
|
|
foreach($options['other'] as $filter)
|
|
{
|
|
if ($filter['name'] == 'time-range')
|
|
{
|
|
$start = $this->vCalendar->_parseDateTime($filter['attrs']['start']);
|
|
$end = $this->vCalendar->_parseDateTime($filter['attrs']['end']);
|
|
}
|
|
}
|
|
$handler = $this->_get_handler();
|
|
header('Content-Type: text/calendar');
|
|
echo $handler->freebusy($user, $end, true, 'utf-8', $start, 'REPLY', array());
|
|
|
|
common::egw_exit(); // otherwise we get a 207 multistatus, not 200 Ok
|
|
}
|
|
|
|
/**
|
|
* Return priviledges for current user, default is read and read-current-user-privilege-set
|
|
*
|
|
* Reimplemented to add read-free-busy and schedule-deliver privilege
|
|
*
|
|
* @param string $path path of collection
|
|
* @param int $user=null owner of the collection, default current user
|
|
* @return array with privileges
|
|
*/
|
|
public function current_user_privileges($path, $user=null)
|
|
{
|
|
$priviledes = parent::current_user_privileges($user);
|
|
|
|
if ($this->bo->check_perms(EGW_ACL_FREEBUSY, 0, $user))
|
|
{
|
|
$priviledes['read-free-busy'] = HTTP_WebDAV_Server::mkprop(groupdav::CALDAV, 'read-free-busy', '');
|
|
|
|
if (substr($path, -8) == '/outbox/' && $this->bo->check_acl_invite($user))
|
|
{
|
|
$priviledes['schedule-send'] = HTTP_WebDAV_Server::mkprop(groupdav::CALDAV, 'schedule-send', '');
|
|
}
|
|
}
|
|
if (substr($path, -7) == '/inbox/' && $this->bo->check_acl_invite($user))
|
|
{
|
|
$priviledes['schedule-deliver'] = HTTP_WebDAV_Server::mkprop(groupdav::CALDAV, 'schedule-deliver', '');
|
|
}
|
|
return $priviledes;
|
|
}
|
|
|
|
/**
|
|
* Fix event series with exceptions, called by calendar_ical::importVCal():
|
|
* a) only series master = first event got cal_id from URL
|
|
* b) exceptions need to be checked if they are already in DB or new
|
|
* c) recurrence-id of (real not virtual) exceptions need to be re-added to master
|
|
*
|
|
* @param array &$events
|
|
*/
|
|
static function fix_series(array &$events)
|
|
{
|
|
$bo = new calendar_boupdate();
|
|
|
|
// get array with orginal recurrences indexed by recurrence-id
|
|
$org_recurrences = $exceptions = array();
|
|
foreach(self::get_series($events[0]['uid'],$bo) as $k => $event)
|
|
{
|
|
if (!$k) $master = $event;
|
|
if ($event['recurrence'])
|
|
{
|
|
$org_recurrences[$event['recurrence']] = $event;
|
|
}
|
|
}
|
|
|
|
// assign cal_id's to already existing recurrences and evtl. re-add recur_exception to master
|
|
foreach($events as $k => &$recurrence)
|
|
{
|
|
if (!$recurrence['recurrence'])
|
|
{
|
|
// master
|
|
$recurrence['id'] = $master['id'];
|
|
$master =& $events[$k];
|
|
continue;
|
|
}
|
|
|
|
// from now on we deal with exceptions
|
|
$org_recurrence = $org_recurrences[$recurrence['recurrence']];
|
|
if (isset($org_recurrence)) // already existing recurrence
|
|
{
|
|
//error_log(__METHOD__.'() setting id #'.$org_recurrence['id']).' for '.$recurrence['recurrence'].' = '.date('Y-m-d H:i:s',$recurrence['recurrence']);
|
|
$recurrence['id'] = $org_recurrence['id'];
|
|
|
|
// re-add (non-virtual) exceptions to master's recur_exception
|
|
if ($recurrence['id'] != $master['id'])
|
|
{
|
|
//error_log(__METHOD__.'() re-adding recur_exception '.$recurrence['recurrence'].' = '.date('Y-m-d H:i:s',$recurrence['recurrence']));
|
|
$exceptions[] = $recurrence['recurrence'];
|
|
}
|
|
// remove recurrence to be able to detect deleted exceptions
|
|
unset($org_recurrences[$recurrence['recurrence']]);
|
|
}
|
|
}
|
|
$master['recur_exception'] = array_merge($exceptions, $master['recur_exception']);
|
|
|
|
// delete not longer existing recurrences
|
|
foreach($org_recurrences as $org_recurrence)
|
|
{
|
|
if ($org_recurrence['id'] != $master['id']) // non-virtual recurrence
|
|
{
|
|
//error_log(__METHOD__.'() deleting #'.$org_recurrence['id']);
|
|
$bo->delete($org_recurrence['id']); // might fail because of permissions
|
|
}
|
|
else // virtual recurrence
|
|
{
|
|
//error_log(__METHOD__.'() delete virtual exception '.$org_recurrence['recurrence'].' = '.date('Y-m-d H:i:s',$org_recurrence['recurrence']));
|
|
$bo->update_status($master, $org_recurrence, $org_recurrence['recurrence']);
|
|
}
|
|
}
|
|
//foreach($events as $n => $event) error_log(__METHOD__." $n after: ".array2string($event));
|
|
}
|
|
|
|
/**
|
|
* Handle delete request for an event
|
|
*
|
|
* If current user has no right to delete the event, but is an attendee, we reject the event for him.
|
|
*
|
|
* @todo remove (non-virtual) exceptions, if series master gets deleted
|
|
* @param array &$options
|
|
* @param int $id
|
|
* @return mixed boolean true on success, false on failure or string with http status (eg. '404 Not Found')
|
|
*/
|
|
function delete(&$options,$id)
|
|
{
|
|
if (strpos($options['path'], '/inbox/') !== false)
|
|
{
|
|
return true; // simply ignore DELETE in inbox for now
|
|
}
|
|
$return_no_access = true; // to allow to check if current use is a participant and reject the event for him
|
|
if (!is_array($event = $this->_common_get_put_delete('DELETE',$options,$id,$return_no_access)) || !$return_no_access)
|
|
{
|
|
if (!$return_no_access)
|
|
{
|
|
// check if user is a participant or one of the groups he is a member of --> reject the meeting request
|
|
$ret = '403 Forbidden';
|
|
$memberships = $GLOBALS['egw']->accounts->memberships($this->bo->user, true);
|
|
foreach($event['participants'] as $uid => $status)
|
|
{
|
|
if ($this->bo->user == $uid || in_array($uid, $memberships))
|
|
{
|
|
if ($this->bo->set_status($event,$this->bo->user, 'R')) $ret = true;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
$ret = $event;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
$ret = $this->bo->delete($event['id']);
|
|
}
|
|
if ($this->debug) error_log(__METHOD__."(,$id) return_no_access=$return_no_access, event[participants]=".array2string(is_array($event)?$event['participants']:null).", user={$this->bo->user} --> return ".array2string($ret));
|
|
return $ret;
|
|
}
|
|
|
|
/**
|
|
* Read an entry
|
|
*
|
|
* We have to make sure to not return or even consider in read deleted events, as the might have
|
|
* the same UID and/or caldav_name as not deleted events and would block access to valid entries
|
|
*
|
|
* @param string|id $id
|
|
* @return array|boolean array with entry, false if no read rights, null if $id does not exist
|
|
*/
|
|
function read($id)
|
|
{
|
|
if (strpos($column=self::$path_attr,'_') === false) $column = 'cal_'.$column;
|
|
|
|
$event = $this->bo->read(array($column => $id, 'cal_deleted IS NULL'), null, true, 'server');
|
|
if ($event) $event = array_shift($event); // read with array as 1. param, returns an array of events!
|
|
|
|
if (!($retval = $this->bo->check_perms(EGW_ACL_FREEBUSY,$event, 0, 'server')))
|
|
{
|
|
if ($this->debug > 0) error_log(__METHOD__."($id) no READ or FREEBUSY rights returning ".array2string($retval));
|
|
return $retval;
|
|
}
|
|
if (!$this->bo->check_perms(EGW_ACL_READ, $event, 0, 'server'))
|
|
{
|
|
$this->bo->clear_private_infos($event, array($this->bo->user, $event['owner']));
|
|
}
|
|
// handle deleted events, as not existing
|
|
if ($event['deleted']) $event = null;
|
|
|
|
if ($this->debug > 1) error_log(__METHOD__."($id) returning ".array2string($event));
|
|
|
|
return $event;
|
|
}
|
|
|
|
/**
|
|
* Query ctag for calendar
|
|
*
|
|
* @return string
|
|
*/
|
|
public function getctag($path,$user)
|
|
{
|
|
$ctag = $this->bo->get_ctag($user,$path == '/calendar/' ? 'owner' : 'default'); // default = not rejected
|
|
|
|
if ($this->debug > 1) error_log(__FILE__.'['.__LINE__.'] '.__METHOD__. "($path)[$user] = $ctag");
|
|
|
|
return $ctag;
|
|
}
|
|
|
|
/**
|
|
* Get the etag for an entry, reimplemented to include the participants and stati in the etag
|
|
*
|
|
* @param array/int $event array with event or cal_id
|
|
* @return string/boolean string with etag or false
|
|
*/
|
|
function get_etag($entry)
|
|
{
|
|
$etag = $this->bo->get_etag($entry,$this->client_shared_uid_exceptions);
|
|
|
|
//error_log(__METHOD__ . "($entry[id] ($entry[etag]): $entry[title] --> etag=$etag");
|
|
return $etag;
|
|
}
|
|
|
|
/**
|
|
* Check if user has the neccessary rights on an event
|
|
*
|
|
* @param int $acl EGW_ACL_READ, EGW_ACL_EDIT or EGW_ACL_DELETE
|
|
* @param array/int $event event-array or id
|
|
* @return boolean null if entry does not exist, false if no access, true if access permitted
|
|
*/
|
|
function check_access($acl,$event)
|
|
{
|
|
if ($acl == EGW_ACL_READ)
|
|
{
|
|
// we need at least EGW_ACL_FREEBUSY to get some information
|
|
$acl = EGW_ACL_FREEBUSY;
|
|
}
|
|
return $this->bo->check_perms($acl,$event,0,'server');
|
|
}
|
|
|
|
/**
|
|
* Add extra properties for calendar collections
|
|
*
|
|
* @param array $props=array() regular props by the groupdav handler
|
|
* @param string $displayname
|
|
* @param string $base_uri=null base url of handler
|
|
* @return array
|
|
*/
|
|
static function extra_properties(array $props=array(), $displayname, $base_uri=null)
|
|
{
|
|
// calendar description
|
|
$props['calendar-description'] = HTTP_WebDAV_Server::mkprop(groupdav::CALDAV,'calendar-description',$displayname);
|
|
// email of the current user, see caldav-sheduling draft
|
|
$props['calendar-user-address-set'] = HTTP_WebDAV_Server::mkprop(groupdav::CALDAV,'calendar-user-address-set',array(
|
|
HTTP_WebDAV_Server::mkprop('href','MAILTO:'.$GLOBALS['egw_info']['user']['email']),
|
|
HTTP_WebDAV_Server::mkprop('href',$base_uri.'/principals/users/'.$GLOBALS['egw_info']['user']['account_lid'].'/'),
|
|
HTTP_WebDAV_Server::mkprop('href','urn:uuid:'.$GLOBALS['egw_info']['user']['account_lid'])));
|
|
// supported components, currently only VEVENT
|
|
$props['supported-calendar-component-set'] = HTTP_WebDAV_Server::mkprop(groupdav::CALDAV,'supported-calendar-component-set',array(
|
|
HTTP_WebDAV_Server::mkprop(groupdav::CALDAV,'comp',array('name' => 'VCALENDAR')),
|
|
HTTP_WebDAV_Server::mkprop(groupdav::CALDAV,'comp',array('name' => 'VTIMEZONE')),
|
|
HTTP_WebDAV_Server::mkprop(groupdav::CALDAV,'comp',array('name' => 'VEVENT')),
|
|
));
|
|
$props['supported-report-set'] = HTTP_WebDAV_Server::mkprop('supported-report-set',array(
|
|
HTTP_WebDAV_Server::mkprop('supported-report',array(
|
|
HTTP_WebDAV_Server::mkprop('report',array(
|
|
HTTP_WebDAV_Server::mkprop(groupdav::CALDAV,'calendar-query',''))),
|
|
HTTP_WebDAV_Server::mkprop('report',array(
|
|
HTTP_WebDAV_Server::mkprop(groupdav::CALDAV,'calendar-multiget',''))),
|
|
HTTP_WebDAV_Server::mkprop('report',array(
|
|
HTTP_WebDAV_Server::mkprop(groupdav::CALDAV,'free-busy-query',''))),
|
|
))));
|
|
$props['supported-calendar-data'] = HTTP_WebDAV_Server::mkprop(groupdav::CALDAV,'supported-calendar-data',array(
|
|
HTTP_WebDAV_Server::mkprop(groupdav::CALDAV,'calendar-data', array('content-type' => 'text/calendar', 'version'=> '2.0')),
|
|
HTTP_WebDAV_Server::mkprop(groupdav::CALDAV,'calendar-data', array('content-type' => 'text/x-calendar', 'version'=> '1.0'))));
|
|
|
|
return $props;
|
|
}
|
|
|
|
/**
|
|
* Get the handler and set the supported fields
|
|
*
|
|
* @return calendar_ical
|
|
*/
|
|
private function _get_handler()
|
|
{
|
|
$handler = new calendar_ical();
|
|
$handler->setSupportedFields('GroupDAV',$this->agent);
|
|
if ($this->debug > 1) error_log("ical Handler called: " . $this->agent);
|
|
return $handler;
|
|
}
|
|
}
|