forked from extern/egroupware
392 lines
12 KiB
PHP
392 lines
12 KiB
PHP
<?php
|
|
/**
|
|
* eGroupWare: GroupDAV access: calendar handler
|
|
*
|
|
* @link http://www.egroupware.org
|
|
* @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
|
|
* @package calendar
|
|
* @subpackage groupdav
|
|
* @author Ralf Becker <RalfBecker-AT-outdoor-training.de>
|
|
* @copyright (c) 2007/8 by Ralf Becker <RalfBecker-AT-outdoor-training.de>
|
|
* @version $Id$
|
|
*/
|
|
|
|
/**
|
|
* eGroupWare: GroupDAV access: calendar handler
|
|
*/
|
|
class calendar_groupdav extends groupdav_handler
|
|
{
|
|
/**
|
|
* bo class of the application
|
|
*
|
|
* @var calendar_boupdate
|
|
*/
|
|
var $bo;
|
|
|
|
var $filter_prop2cal = array(
|
|
'SUMMARY' => 'cal_title',
|
|
'UID' => 'cal_uid',
|
|
'DTSTART' => 'cal_start',
|
|
'DTEND' => 'cal_end',
|
|
// 'DURATION'
|
|
//'RRULE' => 'recur_type',
|
|
//'RDATE' => 'cal_start',
|
|
//'EXRULE'
|
|
//'EXDATE'
|
|
//'RECURRENCE-ID'
|
|
);
|
|
|
|
/**
|
|
* Constructor
|
|
*
|
|
* @param string $app 'calendar', 'addressbook' or 'infolog'
|
|
* @param int $debug=null debug-level to set
|
|
* @param string $base_uri=null base url of handler
|
|
*/
|
|
function __construct($app,$debug=null,$base_uri=null)
|
|
{
|
|
parent::__construct($app,$debug,$base_uri);
|
|
|
|
$this->bo =& new calendar_boupdate();
|
|
}
|
|
|
|
/**
|
|
* Handle propfind in the calendar folder
|
|
*
|
|
* @param string $path
|
|
* @param array $options
|
|
* @param array &$files
|
|
* @param int $user account_id
|
|
* @param string $id=''
|
|
* @return mixed boolean true on success, false on failure or string with http status (eg. '404 Not Found')
|
|
*/
|
|
function propfind($path,$options,&$files,$user,$id='')
|
|
{
|
|
if ($this->debug) error_log(__METHOD__."($path,".array2string($options).",,$user,$id)");
|
|
|
|
// ToDo: add parameter to only return id & etag
|
|
$cal_filters = array(
|
|
'users' => $user,
|
|
'start' => time()-30*24*3600, // default one month back
|
|
'end' => time()+365*24*3600, // default one year into the future
|
|
'enum_recuring' => false,
|
|
'daywise' => false,
|
|
'date_format' => 'server',
|
|
);
|
|
if ($this->debug > 1) error_log(__METHOD__."($path,,,$user,$id) cal_filters=".array2string($cal_filters));
|
|
|
|
// process REPORT filters or multiget href's
|
|
if (($id || $options['root']['name'] != 'propfind') && !$this->_report_filters($options,$cal_filters,$id))
|
|
{
|
|
return false;
|
|
}
|
|
// check if we have to return the full calendar data or just the etag's
|
|
if (!($calendar_data = $options['props'] == 'all' && $options['root']['ns'] == groupdav::CALDAV) && is_array($options['props']))
|
|
{
|
|
foreach($options['props'] as $prop)
|
|
{
|
|
if ($prop['name'] == 'calendar-data')
|
|
{
|
|
$calendar_data = true;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if (($events = $this->bo->search($cal_filters)))
|
|
{
|
|
foreach($events as $event)
|
|
{
|
|
//header('X-EGROUPWARE-EVENT-'.$event['id'].': '.$event['title'].': '.date('Y-m-d H:i:s',$event['start']).' - '.date('Y-m-d H:i:s',$event['end']));
|
|
$props = array(
|
|
HTTP_WebDAV_Server::mkprop('getetag',$this->get_etag($event)),
|
|
HTTP_WebDAV_Server::mkprop('getcontenttype', $this->agent != 'kde' ?
|
|
'text/calendar; charset=utf-8; component=VEVENT' : 'text/calendar'),
|
|
// getlastmodified and getcontentlength are required by WebDAV and Cadaver eg. reports 404 Not found if not set
|
|
HTTP_WebDAV_Server::mkprop('getlastmodified', $event['modified']),
|
|
);
|
|
if ($calendar_data)
|
|
{
|
|
if (is_null($handler)) $handler = $this->_get_handler();
|
|
$content = $handler->exportVCal(array($event),'2.0','PUBLISH');
|
|
$props[] = HTTP_WebDAV_Server::mkprop('getcontentlength',bytes($content));
|
|
$props[] = HTTP_WebDAV_Server::mkprop(groupdav::CALDAV,'calendar-data',$content);
|
|
}
|
|
else
|
|
{
|
|
$props[] = HTTP_WebDAV_Server::mkprop('getcontentlength', ''); // expensive to calculate and no CalDAV client uses it
|
|
}
|
|
$files['files'][] = array(
|
|
'path' => '/calendar/'.$event['id'].'.ics',
|
|
'props' => $props,
|
|
);
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Process the filters from the CalDAV REPORT request
|
|
*
|
|
* @param array $options
|
|
* @param array &$cal_filters
|
|
* @param string $id
|
|
* @return boolean true if filter could be processed, false for requesting not here supported VTODO items
|
|
*/
|
|
function _report_filters($options,&$cal_filters,$id)
|
|
{
|
|
if ($options['filters'])
|
|
{
|
|
// unset default start & end
|
|
$cal_start = $cal_filters['start']; unset($cal_filters['start']);
|
|
$cal_end = $cal_filters['end']; unset($cal_filters['end']);
|
|
$num_filters = count($cal_filters);
|
|
|
|
foreach($options['filters'] as $filter)
|
|
{
|
|
switch($filter['name'])
|
|
{
|
|
case 'comp-filter':
|
|
if ($this->debug > 1) error_log(__METHOD__."($path,...) comp-filter='{$filter['attrs']['name']}'");
|
|
switch($filter['attrs']['name'])
|
|
{
|
|
case 'VTODO':
|
|
return false; // return nothing for now, todo: check if we can pass it on to the infolog handler
|
|
// todos are handled by the infolog handler
|
|
$infolog_handler = new groupdav_infolog();
|
|
return $infolog_handler->propfind($path,$options,$files,$user,$method);
|
|
case 'VCALENDAR':
|
|
CASE 'VEVENT':
|
|
break; // that's our default anyway
|
|
}
|
|
break;
|
|
case 'prop-filter':
|
|
if ($this->debug > 1) error_log(__METHOD__."($path,...) prop-filter='{$filter['attrs']['name']}'");
|
|
$prop_filter = $filter['attrs']['name'];
|
|
break;
|
|
case 'text-match':
|
|
if ($this->debug > 1) error_log(__METHOD__."($path,...) text-match: $prop_filter='{$filter['data']}'");
|
|
if (!isset($this->filter_prop2cal[strtoupper($prop_filter)]))
|
|
{
|
|
if ($this->debug) error_log(__METHOD__."($path,".array2string($options).",,$user) unknown property '$prop_filter' --> ignored");
|
|
}
|
|
else
|
|
{
|
|
$cal_filters['query'][$this->filter_prop2cal[strtoupper($prop_filter)]] = $filter['data'];
|
|
}
|
|
unset($prop_filter);
|
|
break;
|
|
case 'param-filter':
|
|
if ($this->debug) error_log(__METHOD__."($path,...) param-filter='{$filter['attrs']['name']}' not (yet) implemented!");
|
|
break;
|
|
case 'time-range':
|
|
if ($this->debug > 1) error_log(__METHOD__."($path,...) time-range={$filter['attrs']['start']}-{$filter['attrs']['end']}");
|
|
$cal_filters['start'] = $filter['attrs']['start'];
|
|
$cal_filters['end'] = $filter['attrs']['end'];
|
|
break;
|
|
default:
|
|
if ($this->debug) error_log(__METHOD__."($path,".array2string($options).",,$user) unknown filter --> ignored");
|
|
break;
|
|
}
|
|
}
|
|
if (count($cal_filters) == $num_filters) // no filters set --> restore default start and end time
|
|
{
|
|
$cal_filters['start'] = $cal_start;
|
|
$cal_filters['end'] = $cal_end;
|
|
}
|
|
}
|
|
// multiget or propfind on a given id
|
|
if ($options['root']['name'] == 'calendar-multiget' || $id)
|
|
{
|
|
// no standard time-range!
|
|
unset($cal_filters['start']);
|
|
unset($cal_filters['end']);
|
|
|
|
$ids = array();
|
|
|
|
if ($id)
|
|
{
|
|
if (is_numeric($id))
|
|
{
|
|
$ids[] = (int)$id;
|
|
}
|
|
else
|
|
{
|
|
$cal_filters['query']['cal_uid'] = basename($id,'.ics');
|
|
}
|
|
|
|
}
|
|
else // fetch all given url's
|
|
{
|
|
foreach($options['other'] as $option)
|
|
{
|
|
if ($option['name'] == 'href')
|
|
{
|
|
$parts = explode('/',$option['data']);
|
|
if (is_numeric($id = array_pop($parts))) $ids[] = $id;
|
|
}
|
|
}
|
|
}
|
|
if ($ids)
|
|
{
|
|
$cal_filters['query'][] = 'egw_cal.cal_id IN ('.implode(',',array_map(create_function('$n','return (int)$n;'),$ids)).')';
|
|
}
|
|
if ($this->debug) error_log(__METHOD__."($path,,,$user,$id) calendar-multiget: ids=".implode(',',$ids));
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Handle get request for an event
|
|
*
|
|
* @param array &$options
|
|
* @param int $id
|
|
* @return mixed boolean true on success, false on failure or string with http status (eg. '404 Not Found')
|
|
*/
|
|
function get(&$options,$id)
|
|
{
|
|
if (!is_array($event = $this->_common_get_put_delete('GET',$options,$id)))
|
|
{
|
|
return $event;
|
|
}
|
|
$handler = $this->_get_handler();
|
|
$options['data'] = $handler->exportVCal(array($event),'2.0','PUBLISH');
|
|
$options['mimetype'] = 'text/calendar; charset=utf-8';
|
|
header('Content-Encoding: identity');
|
|
header('ETag: '.$this->get_etag($event));
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Handle put request for an event
|
|
*
|
|
* @param array &$options
|
|
* @param int $id
|
|
* @param int $user=null account_id of owner, default null
|
|
* @return mixed boolean true on success, false on failure or string with http status (eg. '404 Not Found')
|
|
*/
|
|
function put(&$options,$id,$user=null)
|
|
{
|
|
$return_no_access=true; // as handled by importVCal anyway and allows it to set the status for participants
|
|
$event = $this->_common_get_put_delete('PUT',$options,$id,$return_no_access);
|
|
if (!is_null($event) && !is_array($event))
|
|
{
|
|
return $event;
|
|
}
|
|
$handler = $this->_get_handler();
|
|
if (!($cal_id = $handler->importVCal($options['content'],is_numeric($id) ? $id : -1,
|
|
self::etag2value($this->http_if_match))))
|
|
{
|
|
if ($this->debug) error_log(__METHOD__."(,$id) importVCal($options[content]) returned false");
|
|
return '403 Forbidden';
|
|
}
|
|
|
|
header('ETag: '.$this->get_etag($cal_id));
|
|
if (is_null($event) || !$return_no_access) // let lightning think the event is added
|
|
{
|
|
if ($this->debug) error_log(__METHOD__."(,$id,$user) cal_id=$cal_id, is_null(\$event)=".(int)is_null($event));
|
|
header('Location: '.$this->base_uri.'/calendar/'.$cal_id);
|
|
return '201 Created';
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* 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.
|
|
*
|
|
* @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)
|
|
{
|
|
$return_no_access=true; // to allow to check if current use is a participant and reject the event for him
|
|
if (!is_array($event = $this->_common_get_put_delete('DELETE',$options,$id,$return_no_access)) || !$return_no_access)
|
|
{
|
|
if (!$return_no_access)
|
|
{
|
|
$ret = isset($event['participants'][$this->bo->user]) &&
|
|
$this->bo->set_status($event,$this->bo->user,'R') ? true : '403 Forbidden';
|
|
if ($this->debug) error_log(__METHOD__."(,$id) return_no_access=$return_no_access, event[participants]=".array2string($event['participants']).", user={$this->bo->user} --> return $ret");
|
|
return $ret;
|
|
}
|
|
return $event;
|
|
}
|
|
return $this->bo->delete($id);
|
|
}
|
|
|
|
/**
|
|
* Read an entry
|
|
*
|
|
* @param string/id $id
|
|
* @return array/boolean array with entry, false if no read rights, null if $id does not exist
|
|
*/
|
|
function read($id)
|
|
{
|
|
return $this->bo->read($id,null,false,'server');
|
|
}
|
|
|
|
/**
|
|
* 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)
|
|
{
|
|
$e_in = $entry;
|
|
if (!is_array($entry))
|
|
{
|
|
$entry = $this->read($entry);
|
|
}
|
|
if (!$entry['id'] || !isset($entry['etag']) || !isset($entry['participants'])) error_log(__METHOD__."($e_in): id=$entry[id], etag=$entry[etag], isset(participants)=".(int)isset($entry['participants']).", title=$entry[title]: id, etag or participants not set!!!");
|
|
$etag = $entry['id'].':'.$entry['etag'];
|
|
// add a hash over the participants and their stati
|
|
ksort($entry['participants']); // create a defined order
|
|
$etag .= ':'.md5(serialize($entry['participants']));
|
|
//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)
|
|
{
|
|
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
|
|
* @return array
|
|
*/
|
|
static function extra_properties(array $props=array())
|
|
{
|
|
// calendaring URL of the current user
|
|
$props[] = HTTP_WebDAV_Server::mkprop(groupdav::CALDAV,'calendar-home-set',$_SERVER['SCRIPT_NAME'].'/');
|
|
// email of the current user, see caldav-sheduling draft
|
|
$props[] = HTTP_WebDAV_Server::mkprop(groupdav::CALDAV,'calendar-user-address-set','MAILTO:'.$GLOBALS['egw_info']['user']['email']);
|
|
|
|
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);
|
|
|
|
return $handler;
|
|
}
|
|
} |