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egroupware/calendar/inc/class.boical.inc.php
Ralf Becker 9d825d1487 fixed typo reported on german list
2005-12-01 23:22:15 +00:00

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<?php
/**************************************************************************\
* eGroupWare - iCalendar Parser *
* http://www.egroupware.org *
* Written by Lars Kneschke <lkneschke@egroupware.org> *
* -------------------------------------------- *
* This program is free software; you can redistribute it and/or modify it *
* under the terms of the GNU General Public License as published by the *
* Free Software Foundation; either version 2 of the License. *
\**************************************************************************/
/* $Id$ */
require_once EGW_SERVER_ROOT.'/calendar/inc/class.bocalupdate.inc.php';
require_once EGW_SERVER_ROOT.'/phpgwapi/inc/horde/Horde/iCalendar.php';
/**
* iCal import and export via Horde iCalendar classes
*
* @package calendar
* @author Lars Kneschke <lkneschke@egroupware.org>
* @author Ralf Becker <RalfBecker-AT-outdoor-training.de>
* @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
*/
class boical extends bocalupdate
{
/**
* @var array $supportedFields array containing the supported fields of the importing device
*/
var $supportedFields;
/**
* @var array $status_egw2ical conversation of the participant status egw => ical
*/
var $status_egw2ical = array(
'U' => 'NEEDS-ACTION',
'A' => 'ACCEPTED',
'R' => 'DECLINED',
'T' => 'TENTATIVE',
);
/**
* @var array conversation of the participant status ical => egw
*/
var $status_ical2egw = array(
'NEEDS-ACTION' => 'U',
'ACCEPTED' => 'A',
'DECLINED' => 'R',
'TENTATIVE' => 'T',
);
/**
* @var array $status_ical2egw conversation of the priority egw => ical
*/
var $priority_egw2ical = array(
0 => 0, // undefined
1 => 9, // low
2 => 5, // normal
3 => 1, // high
);
/**
* @var array $status_ical2egw conversation of the priority ical => egw
*/
var $priority_ical2egw = array(
0 => 0, // undefined
9 => 1, 8 => 1, 7 => 1, 6 => 1, // low
5 => 2, // normal
4 => 3, 3 => 3, 2 => 3, 1 => 3, // high
);
/**
* @var array $recur_egw2ical converstaion of egw recur-type => ical FREQ
*/
var $recur_egw2ical = array(
MCAL_RECUR_DAILY => 'DAILY',
MCAL_RECUR_WEEKLY => 'WEEKLY',
MCAL_RECUR_MONTHLY_MDAY => 'MONTHLY', // BYMONHTDAY={1..31}
MCAL_RECUR_MONTHLY_WDAY => 'MONTHLY', // BYDAY={1..5}{MO..SO}
MCAL_RECUR_YEARLY => 'YEARLY',
);
/**
* Exports one calendar event to an iCalendar item
*
* @param int/array $events (array of) cal_id or array of the events
* @param string $method='PUBLISH'
* @return string/boolean string with vCal or false on error (eg. no permission to read the event)
*/
function &exportVCal($events,$version='1.0', $method='PUBLISH')
{
$egwSupportedFields = array(
'CLASS' => array('dbName' => 'public'),
'SUMMARY' => array('dbName' => 'title'),
'DESCRIPTION' => array('dbName' => 'description'),
'LOCATION' => array('dbName' => 'location'),
'DTSTART' => array('dbName' => 'start'),
'DTEND' => array('dbName' => 'end'),
'ORGANIZER' => array('dbName' => 'owner'),
'ATTENDEE' => array('dbName' => 'participants'),
'RRULE' => array('dbName' => 'recur_type'),
'EXDATE' => array('dbName' => 'recur_exception'),
'PRIORITY' => array('dbName' => 'priority'),
'TRANSP' => array('dbName' => 'non_blocking'),
'CATEGORIES'=> array('dbName' => 'category'),
);
if(!is_array($this->supportedFields))
{
$this->setSupportedFields();
}
$vcal = &new Horde_iCalendar;
$vcal->setAttribute('PRODID','-//eGroupWare//NONSGML eGroupWare Calendar '.$GLOBALS['egw_info']['apps']['calendar']['version'].'//'.
strtoupper($GLOBALS['egw_info']['user']['preferences']['common']['lang']));
$vcal->setAttribute('VERSION',$version);
$vcal->setAttribute('METHOD',$method);
if (!is_array($events)) $events = array($events);
foreach($events as $event)
{
if (!is_array($event) && !($event = $this->read($event,null,false,'server'))) // server = timestamp in server-time(!)
{
return false; // no permission to read $cal_id
}
//_debug_array($event);
$eventGUID = $GLOBALS['egw']->common->generate_uid('calendar',$event['id']);
$vevent = Horde_iCalendar::newComponent('VEVENT',$vcal);
$parameters = $attributes = array();
foreach($egwSupportedFields as $icalFieldName => $egwFieldInfo)
{
if($this->supportedFields[$egwFieldInfo['dbName']])
{
switch($icalFieldName)
{
case 'ATTENDEE':
foreach((array)$event['participants'] as $uid => $status)
{
// ToDo, this needs to deal with resources too!!!
if (!is_numeric($uid)) continue;
$mailto = $GLOBALS['egw']->accounts->id2name($uid,'account_email');
$cn = trim($GLOBALS['egw']->accounts->id2name($uid,'account_firstname'). ' ' .
$GLOBALS['egw']->accounts->id2name($uid,'account_lastname'));
$attributes['ATTENDEE'][] = $mailto ? 'MAILTO:'.$mailto : '';
// ROLE={CHAIR|REQ-PARTICIPANT|OPT-PARTICIPANT|NON-PARTICIPANT} NOT used by eGW atm.
$role = $uid == $event['owner'] ? 'CHAIR' : 'REQ-PARTICIPANT';
// RSVP={TRUE|FALSE} // resonse expected, not set in eGW => status=U
$rsvp = $status == 'U' ? 'TRUE' : 'FALSE';
// PARTSTAT={NEEDS-ACTION|ACCEPTED|DECLINED|TENTATIVE|DELEGATED|COMPLETED|IN-PROGRESS} everything from delegated is NOT used by eGW atm.
$status = $this->status_egw2ical[$status];
// CUTYPE={INDIVIDUAL|GROUP|RESOURCE|ROOM|UNKNOWN}
$cutype = $GLOBALS['egw']->accounts->get_type($uid) == 'g' ? 'GROUP' : 'INDIVIDUAL';
$parameters['ATTENDEE'][] = array(
'CN' => $cn,
'ROLE' => $role,
'PARTSTAT' => $status,
'CUTYPE' => $cutype,
'RSVP' => $rsvp,
);
}
break;
case 'CLASS':
$attributes['CLASS'] = $event['public'] ? 'PUBLIC' : 'PRIVATE';
break;
case 'ORGANIZER': // according to iCalendar standard, ORGANIZER not used for events in the own calendar
if (!isset($event['participants'][$event['owner']]) || count($event['participants']) > 1)
{
$mailtoOrganizer = $GLOBALS['egw']->accounts->id2name($event['owner'],'account_email');
$attributes['ORGANIZER'] = $mailtoOrganizer ? 'MAILTO:'.$mailtoOrganizer : '';
$parameters['ORGANIZER']['CN'] = trim($GLOBALS['egw']->accounts->id2name($event['owner'],'account_firstname').' '.
$GLOBALS['egw']->accounts->id2name($event['owner'],'account_lastname'));
}
break;
case 'DTEND':
if(date('H:i:s',$event['end']) == '23:59:59') $event['end']++;
$attributes[$icalFieldName] = $event['end'];
break;
case 'RRULE':
if ($event['recur_type'] == MCAL_RECUR_NONE) break; // no recuring event
$rrule = array('FREQ' => $this->recur_egw2ical[$event['recur_type']]);
switch ($event['recur_type'])
{
case MCAL_RECUR_WEEKLY:
$days = array();
foreach($this->recur_days as $id => $day)
{
if ($event['recur_data'] & $id) $days[] = strtoupper(substr($day,0,2));
}
$rrule['BYDAY'] = implode(',',$days);
break;
case MCAL_RECUR_MONTHLY_MDAY: // date of the month: BYMONTDAY={1..31}
$rrule['BYMONTHDAY'] = (int) date('d',$event['start']);
break;
case MCAL_RECUR_MONTHLY_WDAY: // weekday of the month: BDAY={1..5}{MO..SO}
$rrule['BYDAY'] = (1 + (int) ((date('d',$event['start'])-1) / 7)).
strtoupper(substr(date('l',$event['start']),0,2));
break;
}
if ($event['recur_interval'] > 1) $rrule['INTERVAL'] = $event['recur_interval'];
if ($event['recur_enddate']) $rrule['UNTIL'] = date('Ymd',$event['recur_enddate']); // only day is set in eGW
// no idea how to get the Horde parser to produce a standard conformant
// RRULE:FREQ=... (note the double colon after RRULE, we cant use the $parameter array)
// so we create one value manual ;-)
foreach($rrule as $name => $value)
{
$attributes['RRULE'][] = $name . '=' . $value;
}
$attributes['RRULE'] = implode(';',$attributes['RRULE']);
break;
case 'EXDATE':
if ($event['recur_exception'])
{
$days = array();
foreach($event['recur_exception'] as $day)
{
$days[] = date('Ymd',$day);
}
$attributes['EXDATE'] = implode(',',$days);
$parameters['EXDATE']['VALUE'] = 'DATE';
}
break;
case 'PRIORITY':
$attributes['PRIORITY'] = (int) $this->priority_egw2ical[$event['priority']];
break;
case 'TRANSP':
$attributes['TRANSP'] = $event['non_blocking'] ? 'TRANSPARENT' : 'OPAQUE';
break;
case 'CATEGORIES':
if ($event['category'])
{
$attributes['CATEGORIES'] = implode(',',$this->categories($event['category'],$nul));
}
break;
default:
if ($event[$egwFieldInfo['dbName']]) // dont write empty fields
{
$attributes[$icalFieldName] = $event[$egwFieldInfo['dbName']];
}
break;
}
}
}
$modified = $GLOBALS['egw']->contenthistory->getTSforAction($eventGUID,'modify');
$created = $GLOBALS['egw']->contenthistory->getTSforAction($eventGUID,'add');
if (!$created && !$modified) $created = $event['modified'];
if ($created) $attributes['CREATED'] = $created;
if (!$modified) $modified = $event['modified'];
if ($modified) $attributes['LAST-MODIFIED'] = $modified;
$attributes['UID'] = $eventGUID;
foreach($attributes as $key => $value)
{
foreach(is_array($value) ? $value : array($value) as $valueID => $valueData)
{
$valueData = $GLOBALS['egw']->translation->convert($valueData,$GLOBALS['egw']->translation->charset(),'UTF-8');
$paramData = (array) $GLOBALS['egw']->translation->convert(is_array($value) ? $parameters[$key][$valueID] : $parameters[$key],
$GLOBALS['egw']->translation->charset(),'UTF-8');
//echo "$key:$valueID: value=$valueData, param=".print_r($paramDate,true)."\n";
$vevent->setAttribute($key, $valueData, $paramData);
$options = array();
if($key != 'RRULE' && preg_match('/([\000-\012\015\016\020-\037\075])/',$valueData))
{
$options['ENCODING'] = 'QUOTED-PRINTABLE';
}
if(preg_match('/([\177-\377])/',$valueData))
{
$options['CHARSET'] = 'UTF-8';
}
$vevent->setParameter($key, $options);
}
}
$vcal->addComponent($vevent);
}
//_debug_array($vcal->exportvCalendar());
return $vcal->exportvCalendar();
}
function importVCal($_vcalData, $cal_id=-1)
{
// our (patched) horde classes, do NOT unfold folded lines, which causes a lot trouble in the import
$_vcalData = preg_replace("/[\r\n]+ /",'',$_vcalData);
$vcal = &new Horde_iCalendar;
if(!$vcal->parsevCalendar($_vcalData))
{
return FALSE;
}
if(!is_array($this->supportedFields))
{
$this->setSupportedFields();
}
//echo "supportedFields="; _debug_array($this->supportedFields);
$Ok = false; // returning false, if file contains no components
foreach($vcal->getComponents() as $component)
{
if(is_a($component, 'Horde_iCalendar_vevent'))
{
$supportedFields = $this->supportedFields;
$event = array('participants' => array());
$vcardData = array('recur_type' => 0);
// lets see what we can get from the vcard
foreach($component->_attributes as $attributes)
{
$attributes['value'] = $GLOBALS['egw']->translation->convert($attributes['value'],'UTF-8');
//echo "$attributes[name] = '$attributes[value]'<br />\n";
switch($attributes['name'])
{
case 'CLASS':
$vcardData['public'] = (int)(strtolower($attributes['value']) == 'public');
break;
case 'DESCRIPTION':
$vcardData['description'] = $attributes['value'];
break;
case 'DTEND':
if(date('H:i:s',$attributes['value']) == '00:00:00')
$attributes['value']--;
$vcardData['end'] = $attributes['value'];
break;
case 'DTSTART':
$vcardData['start'] = $attributes['value'];
break;
case 'LOCATION':
$vcardData['location'] = $attributes['value'];
break;
case 'RRULE':
$recurence = $attributes['value'];
$type = preg_match('/FREQ=([^;: ]+)/i',$recurence,$matches) ? $matches[1] : $recurence{0};
// vCard 2.0 values for all types
if (preg_match('/UNTIL=([0-9T]+)/',$recurence,$matches))
{
$vcardData['recur_enddate'] = $vcal->_parseDateTime($matches[1]);
}
if (preg_match('/INTERVAL=([0-9]+)/',$recurence,$matches))
{
$vcardData['recur_interval'] = (int) $matches[1];
}
$vcardData['recur_data'] = 0;
switch($type)
{
case 'W':
case 'WEEKLY':
$days = array();
if(preg_match('/W(\d+) (.*) (.*)/',$recurence, $recurenceMatches)) // 1.0
{
$vcardData['recur_interval'] = $recurenceMatches[1];
$days = explode(' ',trim($recurenceMatches[2]));
}
elseif (preg_match('/BYDAY=([^;: ]+)/',$recurence,$recurenceMatches)) // 2.0
{
$days = explode(',',$recurenceMatches[1]);
}
if ($days)
{
foreach($this->recur_days as $id => $day)
{
if (in_array(strtoupper(substr($day,0,2)),$matches))
{
$vcardData['recur_data'] |= $id;
}
}
$vcardData['recur_type'] = MCAL_RECUR_WEEKLY;
}
break;
case 'D': // 1.0
if(!preg_match('/D(\d+) (.*)/',$recurence, $recurenceMatches)) break;
$vcardData['recur_interval'] = $recurenceMatches[1];
$vcardData['recur_enddate'] = $vcal->_parseDateTime($recurenceMatches[2]);
// fall-through
case 'DAILY': // 2.0
$vcardData['recur_type'] = MCAL_RECUR_DAILY;
break;
case 'M':
if(preg_match('/MD(\d+) (.*)/',$recurence, $recurenceMatches))
{
$vcardData['recur_type'] = MCAL_RECUR_MONTHLY_MDAY;
$vcardData['recur_interval'] = $recurenceMatches[1];
}
elseif(preg_match('/MP(\d+) (.*) (.*) (.*)/',$recurence, $recurenceMatches))
{
$vcardData['recur_type'] = MCAL_RECUR_MONTHLY_WDAY;
$vcardData['recur_interval'] = $recurenceMatches[1];
}
break;
case 'MONTHLY':
$vcardData['recur_type'] = strstr($recurence,'BYDAY') ?
MCAL_RECUR_MONTHLY_WDAY : MCAL_RECUR_MONTHLY_MDAY;
break;
case 'Y': // 1.0
if(!preg_match('/YM(\d+) (.*)/',$recurence, $recurenceMatches)) break;
$vcardData['recur_interval'] = $recurenceMatches[1];
// fall-through
case 'YEARLY': // 2.0
$vcardData['recur_type'] = MCAL_RECUR_YEARLY;
break;
}
break;
case 'EXDATE':
// ToDo: $vcardData['recur_exception'] = ...
break;
case 'SUMMARY':
$vcardData['title'] = $attributes['value'];
break;
case 'UID':
$event['uid'] = $vcardData['uid'] = $attributes['value'];
if ($cal_id <= 0 && !empty($vcardData['uid']) && ($uid_event = $this->read($vcardData['uid'])))
{
$event['id'] = $uid_event['id'];
unset($uid_event);
}
break;
case 'TRANSP':
$vcardData['non_blocking'] = $attributes['value'] == 'TRANSPARENT';
break;
case 'PRIORITY':
$vcardData['priority'] = (int) $this->priority_ical2egw[$attributes['value']];
break;
case 'CATEGORIES':
$vcardData['category'] = array();
if ($attributes['value'])
{
if (!is_object($this->cat))
{
if (!is_object($GLOBALS['egw']->categories))
{
$GLOBALS['egw']->categories =& CreateObject('phpgwapi.categories',$this->owner,'calendar');
}
$this->cat =& $GLOBALS['egw']->categories;
}
foreach(explode(',',$attributes['value']) as $cat_name)
{
if (!($cat_id = $this->cat->name2id($cat_name)))
{
$cat_id = $this->cat->add( array('name' => $cat_name,'descr' => $cat_name ));
}
$vcardData['category'][] = $cat_id;
}
}
break;
case 'ATTENDEE':
if (preg_match('/MAILTO:([@.a-z0-9_-]+)/i',$attributes['value'],$matches) &&
($uid = $GLOBALS['egw']->accounts->name2id($matches[1],'account_email')))
{
$event['participants'][$uid] = isset($attributes['params']['PARTSTAT']) ?
$this->status_ical2egw[strtoupper($attributes['params']['PARTSTAT'])] :
($uid == $event['owner'] ? 'A' : 'U');
}
break;
case 'ORGANIZER': // will be written direct to the event
if (preg_match('/MAILTO:([@.a-z0-9_-]+)/i',$attributes['value'],$matches) &&
($uid = $GLOBALS['egw']->accounts->name2id($matches[1],'account_email')))
{
$event['owner'] = $uid;
}
break;
case 'CREATED': // will be written direct to the event
if ($event['modified']) break;
// fall through
case 'LAST-MODIFIED': // will be written direct to the event
$event['modified'] = $attributes['value'];
break;
}
}
//echo "event=";_debug_array($vcardData);
// now that we know what the vard provides, we merge that data with the information we have about the device
$event['priority'] = 2;
if($cal_id > 0)
{
$event['id'] = $cal_id;
}
while(($fieldName = array_shift($supportedFields)))
{
switch($fieldName)
{
case 'recur_type':
$event['recur_type'] = $vcardData['recur_type'];
if ($event['recur_type'] != MCAL_RECUR_NONE)
{
foreach(array('recur_interval','recur_enddate','recur_data','recur_exception') as $r)
{
if(isset($vcardData[$r]))
{
$event[$r] = $vcardData[$r];
}
}
}
unset($supportedFields['recur_type']);
unset($supportedFields['recur_interval']);
unset($supportedFields['recur_enddate']);
unset($supportedFields['recur_data']);
break;
default:
if (isset($vcardData[$fieldName]))
{
$event[$fieldName] = $vcardData[$fieldName];
}
unset($supportedFields[$fieldName]);
break;
}
}
// add ourself to new events as participant
if($cal_id == -1 && !isset($this->supportedFields['participants']))
{
$event['participants'] = array($GLOBALS['egw_info']['user']['account_id'] => 'A');
}
#foreach($event as $key => $value)
#{
# error_log("KEY: $key VALUE: $value");
#}
//echo "event=";_debug_array($event);
if (!($Ok = $this->update($event, TRUE))) break; // stop with the first error
}
}
return $Ok;
}
function setSupportedFields($_productManufacturer='file', $_productName='')
{
$defaultFields = array('public' => 'public', 'description' => 'description', 'end' => 'end',
'start' => 'start', 'location' => 'location', 'recur_type' => 'recur_type',
'recur_interval' => 'recur_interval', 'recur_data' => 'recur_data', 'recur_enddate' => 'recur_enddate',
'title' => 'title', 'priority' => 'priority',
);
switch(strtolower($_productManufacturer))
{
case 'nexthaus corporation':
switch(strtolower($_productName))
{
default:
$this->supportedFields = $defaultFields + array('participants' => 'participants');
break;
}
break;
// multisync does not provide anymore information then the manufacturer
// we suppose multisync with evolution
case 'the multisync project':
switch(strtolower($_productName))
{
default:
$this->supportedFields = $defaultFields;
break;
}
break;
case 'synthesis ag':
switch(strtolower($_productName))
{
default:
$this->supportedFields = $defaultFields;
break;
}
break;
case 'file': // used outside of SyncML, eg. by the calendar itself ==> all possible fields
$this->supportedFields = $defaultFields + array(
'participants' => 'participants',
'owner' => 'owner',
'non_blocking' => 'non_blocking',
'category' => 'category',
);
break;
// the fallback for SyncML
default:
error_log("Client not found: $_productManufacturer $_productName");
$this->supportedFields = $defaultFields;
break;
}
}
}
?>
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