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egroupware/calendar/inc/class.calendar_zpush.inc.php

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<?php
/**
* EGroupware: eSync: Calendar plugin
*
* @link http://www.egroupware.org
* @package calendar
* @subpackage esync
* @author Ralf Becker <rb@egroupware.org>
* @author Klaus Leithoff
* @author Philip Herbert <philip@knauber.de>
* @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
* @version $Id$
*/
use EGroupware\Api;
use EGroupware\Api\Acl;
/**
* Required for TZID <--> AS timezone blob test, if script is called directly via URL
*/
if (isset($_SERVER['SCRIPT_FILENAME']) && realpath($_SERVER['SCRIPT_FILENAME']) == __FILE__)
{
interface activesync_plugin_write {}
interface activesync_plugin_meeting_requests {}
class ZLog { static function Write($level, $msg) { unset($level, $msg); }}
}
/**
* Calendar eSync plugin
*
* Plugin to make EGroupware calendar data available
*
* Handling of (virtual) exceptions of recurring events:
* ----------------------------------------------------
* Virtual exceptions are exceptions caused by recurcences with just different participant status
* compared to regular series (master). Real exceptions usually have different dates and/or other data.
* EGroupware calendar data model does NOT store virtual exceptions as exceptions,
* as participant status is stored per recurrence date and not just per event!
*
* --> ActiveSync protocol does NOT support different participants or status for exceptions!
*
* Handling of alarms:
* ------------------
* We report only alarms of the current user (which should ring on the device)
* and save alarms set on the device only for the current user, if not yet there (preserving all other alarms).
* How to deal with multiple alarms allowed in EGroupware: report earliest one to the device
* (and hope it resyncs before next one is due, thought we do NOT report that as change currently!).
*/
class calendar_zpush implements activesync_plugin_write, activesync_plugin_meeting_requests
{
/**
* var activesync_backend
*/
private $backend;
/**
* Instance of calendar_bo
*
* @var calendar_boupdate
*/
private $calendar;
/**
* Instance of Api\Contacts
*
* @var Api\Contacts
*/
private $addressbook;
/**
* Constructor
*
* @param activesync_backend $backend
*/
public function __construct(activesync_backend $backend)
{
$this->backend = $backend;
}
/**
* This function is analogous to GetMessageList.
*/
public function GetFolderList()
{
if (!isset($this->calendar)) $this->calendar = new calendar_boupdate();
$cals_pref = $GLOBALS['egw_info']['user']['preferences']['activesync']['calendar-cals'] ?? null;
$cals = $cals_pref ? explode(',',$cals_pref) : array('P'); // implicit default of 'P'
$folderlist = array();
foreach ($this->calendar->list_cals() as $entry)
{
$account_id = $entry['grantor'];
if (in_array('A',$cals) || in_array($account_id,$cals) ||
$account_id == $GLOBALS['egw_info']['user']['account_id'] || // always incl. own calendar!
$account_id == $GLOBALS['egw_info']['user']['account_primary_group'] && in_array('G',$cals))
{
$folderlist[] = $f = array(
'id' => $this->backend->createID('calendar',$account_id),
'mod' => $GLOBALS['egw']->accounts->id2name($account_id,'account_fullname'),
'parent'=> '0',
);
}
}
//error_log(__METHOD__."() returning ".array2string($folderlist));
ZLog::Write(LOGLEVEL_DEBUG, __METHOD__."() returning ".array2string($folderlist));
return $folderlist;
}
/**
* Get Information about a folder
*
* @param string $id
* @return SyncFolder|boolean false on error
*/
public function GetFolder($id)
{
$type = $owner = null;
$this->backend->splitID($id, $type, $owner);
$folderObj = new SyncFolder();
$folderObj->serverid = $id;
$folderObj->parentid = '0';
$folderObj->displayname = $GLOBALS['egw']->accounts->id2name($owner,'account_fullname');
if ($owner == $GLOBALS['egw_info']['user']['account_id'])
{
$folderObj->type = SYNC_FOLDER_TYPE_APPOINTMENT;
}
else
{
$folderObj->type = SYNC_FOLDER_TYPE_USER_APPOINTMENT;
}
//error_log(__METHOD__."('$id') folderObj=".array2string($folderObj));
//ZLog::Write(LOGLEVEL_DEBUG, __METHOD__."('$id') folderObj=".array2string($folderObj));
return $folderObj;
}
/**
* Return folder stats. This means you must return an associative array with the
* following properties:
*
* "id" => The server ID that will be used to identify the folder. It must be unique, and not too long
* How long exactly is not known, but try keeping it under 20 chars or so. It must be a string.
* "parent" => The server ID of the parent of the folder. Same restrictions as 'id' apply.
* "mod" => This is the modification signature. It is any arbitrary string which is constant as long as
* the folder has not changed. In practice this means that 'mod' can be equal to the folder name
* as this is the only thing that ever changes in folders. (the type is normally constant)
*
* @return array with values for keys 'id', 'mod' and 'parent'
*/
public function StatFolder($id)
{
$type = $owner = null;
$this->backend->splitID($id, $type, $owner);
$stat = array(
'id' => $id,
'mod' => $GLOBALS['egw']->accounts->id2name($owner,'account_fullname'),
'parent' => '0',
);
//error_log(__METHOD__."('$id') folderObj=".array2string($stat));
//ZLog::Write(LOGLEVEL_DEBUG, __METHOD__."('$id') folderObj=".array2string($stat));
return $stat;
}
/**
* Should return a list (array) of messages, each entry being an associative array
* with the same entries as StatMessage(). This function should return stable information; ie
* if nothing has changed, the items in the array must be exactly the same. The order of
* the items within the array is not important though.
*
* The cutoffdate is a date in the past, representing the date since which items should be shown.
* This cutoffdate is determined by the user's setting of getting 'Last 3 days' of e-mail, etc. If
* you ignore the cutoffdate, the user will not be able to select their own cutoffdate, but all
* will work OK apart from that.
*
* @param string $id folder id
* @param int $cutoffdate =null
* @param array $not_uids =null uids NOT to return for meeting requests
* @return array
*/
function GetMessageList($id, $cutoffdate=NULL, array $not_uids=null)
{
if (!isset($this->calendar)) $this->calendar = new calendar_boupdate();
ZLog::Write(LOGLEVEL_DEBUG, __METHOD__."('$id',$cutoffdate)");
$type = $user = null;
$this->backend->splitID($id,$type,$user);
if (!$cutoffdate) $cutoffdate = $this->bo->now - 100*24*3600; // default three month back -30 breaks all sync recurrences
$filter = array(
'users' => $user,
'start' => $cutoffdate, // default one month back -30 breaks all sync recurrences
'enum_recuring' => false,
'daywise' => false,
'date_format' => 'server',
// default = not rejected, current user return NO meeting requests (status=unknown), as they are returned via email!
// with filter="default" iOS 12.3 and z-push 2.5 shows events double: 1. email/meeting-request and 2. calendar entry itself
// ToDo: use filter="default", if user does NOT have email or email-notfications in calendar
'filter' => $user == $GLOBALS['egw_info']['user']['account_id'] ? (is_array($not_uids) ? 'unknown' : 'not-unknown') : 'default',
//'filter' => $user == $GLOBALS['egw_info']['user']['account_id'] ? (is_array($not_uids) ? 'unknown' : 'default') : 'default',
// @todo return only etag relevant information (seems not to work ...)
//'cols' => array('egw_cal.cal_id', 'cal_start', 'recur_type', 'cal_modified', 'cal_uid', 'cal_etag'),
'query' => array('cal_recurrence' => 0), // do NOT return recurrence exceptions
);
$messagelist = array();
// reading events in chunks of 100, to keep memory down for huge calendars
$num_rows = 100;
for($start=0; ($events = $this->calendar->search($filter+array(
'offset' => $start,
'num_rows' => $num_rows,
))); $start += $num_rows)
{
foreach ($events as $event)
{
if ($not_uids && in_array($event['uid'], $not_uids)) continue;
$messagelist[] = $this->StatMessage($id, $event);
// add virtual exceptions for recuring events too
// (we need to read event, as get_recurrence_exceptions need all infos!)
/* if ($event['recur_type'] != calendar_rrule::NONE)// && ($event = $this->calendar->read($event['id'],0,true,'server')))
{
foreach($this->calendar->so->get_recurrence_exceptions($event,
Api\DateTime::$server_timezone->getName(), $cutoffdate, 0, 'all') as $recur_date)
{
$messagelist[] = $this->StatMessage($id, $event['id'].':'.$recur_date);
}
}*/
}
if (count($events) < $num_rows) break;
}
//error_log(__METHOD__."($id, $cutoffdate, ".array2string($not_uids).") type=$type, user=$user returning ".count($messagelist)." messages ".function_backtrace());
return $messagelist;
}
/**
* List all meeting requests / invitations of user NOT having a UID in $not_uids (already received by email)
*
* @param array $not_uids
* @param int $cutoffdate =null
* @return array
*/
function GetMeetingRequests(array $not_uids, $cutoffdate=NULL)
{
unset($not_uids, $cutoffdate);
return array();
/* temporary disabling meeting requests from calendar
$folderid = $this->backend->createID('calendar', $GLOBALS['egw_info']['user']['account_id']); // users personal calendar
$ret = $this->GetMessageList($folderid, $cutoffdate, $not_uids);
// return all id's negative to not conflict with uids from fmail
foreach($ret as &$message)
{
$message['id'] = -$message['id'];
}
ZLog::Write(LOGLEVEL_DEBUG, __METHOD__.'('.array2string($not_uids).", $cutoffdate) returning ".array2string($ret));
return $ret;*/
}
/**
* Stat a meeting request
*
* @param int $id negative! id
* @return array
*/
function StatMeetingRequest($id)
{
$folderid = $this->backend->createID('calendar', $GLOBALS['egw_info']['user']['account_id']); // users personal calendar
$ret = $this->StatMessage($folderid, abs($id));
$ret['id'] = $id;
ZLog::Write(LOGLEVEL_DEBUG, __METHOD__."($id) returning ".array2string($ret));
return $ret;
}
/**
* Return a meeting request as AS SyncMail object
*
* @param int $id negative! cal_id
* @param int $truncsize
* @param int $bodypreference
* @param $optionbodypreference
* @param bool $mimesupport
* @return SyncMail
*/
function GetMeetingRequest($id, $truncsize, $bodypreference=false, $optionbodypreference=false, $mimesupport = 0)
{
unset($truncsize, $optionbodypreference, $mimesupport); // not used, but required by function signature
if (!isset($this->calendar)) $this->calendar = new calendar_boupdate();
if (!($event = $this->calendar->read(abs($id), 0, false, 'server')))
{
$message = false;
}
else
{
$message = new SyncMail();
$message->read = false;
$message->subject = $event['title'];
$message->importance = 1; // 0=Low, 1=Normal, 2=High
$message->datereceived = $event['created'];
$message->to = $message->displayto = $GLOBALS['egw_info']['user']['account_email'];
$message->from = $GLOBALS['egw']->accounts->id2name($event['owner'],'account_fullname').
' <'.$GLOBALS['egw']->accounts->id2name($event['owner'],'account_email').'>';
$message->internetcpid = 65001;
$message->contentclass="urn:content-classes:message";
$message->meetingrequest = self::meetingRequest($event);
$message->messageclass = "IPM.Schedule.Meeting.Request";
// add description as message body
if ($bodypreference == false)
{
$message->body = $event['description'];
$message->bodysize = strlen($message->body);
$message->bodytruncated = 0;
}
else
{
$message->airsyncbasebody = new SyncAirSyncBaseBody();
$message->airsyncbasenativebodytype=1;
$this->backend->note2messagenote($event['description'], $bodypreference, $message->airsyncbasebody);
}
}
ZLog::Write(LOGLEVEL_DEBUG, __METHOD__."($id) returning ".array2string($message));
return $message;
}
/**
* Generate SyncMeetingRequest object from an event array
*
* Used by (calendar|mail)_zpush
*
* @param array|string $event event array or string with iCal
* @return SyncMeetingRequest or null ical not parsable
*/
public static function meetingRequest($event)
{
if (!is_array($event))
{
$ical = new calendar_ical();
if (!($events = $ical->icaltoegw($event, '', 'utf-8')) || count($events) != 1)
{
ZLog::Write(LOGLEVEL_DEBUG, __METHOD__."('$event') error parsing iCal!");
return null;
}
$event = array_shift($events);
ZLog::Write(LOGLEVEL_DEBUG, __METHOD__."(...) parsed as ".array2string($event));
}
$message = new SyncMeetingRequest();
// set timezone
try {
$as_tz = self::tz2as($event['tzid']);
$message->timezone = base64_encode(self::_getSyncBlobFromTZ($as_tz));
}
catch(Exception $e) {
unset($e);
// ignore exception, simply set no timezone, as it is optional
}
// copying timestamps (they are already read in servertime, so non tz conversation)
foreach(array(
'start' => 'starttime',
'end' => 'endtime',
'created' => 'dtstamp',
) as $key => $attr)
{
if (!empty($event[$key])) $message->$attr = $event[$key];
}
if (($message->alldayevent = (int)calendar_bo::isWholeDay($event)))
{
++$message->endtime; // EGw all-day-events are 1 sec shorter!
}
// copying strings
foreach(array(
'title' => 'subject',
'location' => 'location',
) as $key => $attr)
{
if (!empty($event[$key])) $message->$attr = $event[$key];
}
$message->organizer = $event['organizer'];
$message->sensitivity = !isset($event['public']) || $event['public'] ? 0 : 2; // 0=normal, 1=personal, 2=private, 3=confidential
// busystatus=(0=free|1=tentative|2=busy|3=out-of-office), EGw has non_blocking=0|1
$message->busystatus = $event['non_blocking'] ? 0 : 2;
// ToDo: recurring events: InstanceType, RecurrenceId, Recurrences; ...
$message->instancetype = 0; // 0=Single, 1=Master recurring, 2=Single recuring, 3=Exception
$message->responserequested = 1; //0=No, 1=Yes
$message->disallownewtimeproposal = 1; //1=forbidden, 0=allowed
//$message->messagemeetingtype; // email2
// ToDo: alarme: Reminder
// convert UID to GlobalObjID
$message->globalobjid = activesync_backend::uid2globalObjId($event['uid']);
return $message;
}
/**
* Process response to meeting request
*
* @see BackendDiff::MeetingResponse()
* @param string $folderid folder of meeting request mail
* @param int|string $requestid cal_id, or string with iCal from fmail plugin
* @param int $response 1=accepted, 2=tentative, 3=decline
* @return int|boolean id of calendar item, false on error
*/
function MeetingResponse($folderid, $requestid, $response)
{
if (!isset($this->calendar)) $this->calendar = new calendar_boupdate();
static $as2status = array( // different from self::$status2as!
1 => 'A',
2 => 'T',
3 => 'D',
);
$status_in = isset($as2status[$response]) ? $as2status[$response] : 'U';
$uid = $GLOBALS['egw_info']['user']['account_id'];
if (!is_numeric($requestid)) // iCal from fmail
{
$ical = new calendar_ical();
if (!($events = $ical->icaltoegw($requestid, '', 'utf-8')) || count($events) != 1)
{
ZLog::Write(LOGLEVEL_DEBUG, __METHOD__."($folderid, '$requestid') error parsing iCal!");
return null;
}
$parsed_event = array_shift($events);
ZLog::Write(LOGLEVEL_DEBUG, __METHOD__."(...) parsed as ".array2string($parsed_event));
// check if event already exist (invitation of or already imported by other user)
if (!($event = $this->calendar->read($parsed_event['uid'], 0, false, 'server')))
{
$event = $parsed_event; // create new event from external invitation
}
elseif(!isset($event['participants'][$uid]))
{
ZLog::Write(LOGLEVEL_DEBUG, __METHOD__.'('.array2string($requestid).", $folderid, $response) current user ($uid) is NO participant of event ".array2string($event));
// maybe we should silently add him, as he might not have the rights to add him himself with calendar->update ...
}
elseif($event['deleted'])
{
ZLog::Write(LOGLEVEL_DEBUG, __METHOD__.'('.array2string($requestid).", $folderid, $response) event ($uid) deleted on server --> return false");
return false;
}
}
elseif (!($event = $this->calendar->read(abs($requestid), 0, false, 'server')))
{
ZLog::Write(LOGLEVEL_DEBUG, __METHOD__."('$requestid', '$folderid', $response) returning FALSE");
return false;
}
// keep role and quantity as AS has no idea about it
$quantity = $role = null;
calendar_so::split_status($event['participants'][$uid], $quantity, $role);
$status = calendar_so::combine_status($status_in, $quantity, $role);
if ($event['id'] && isset($event['participants'][$uid]))
{
$ret = $this->calendar->set_status($event, $uid, $status) ? $event['id'] : false;
$msg = $ret ? "status '$status' set for event #$ret" : "could NOT set status '$status' for event #$event[id]";
ZLog::Write(LOGLEVEL_DEBUG, __METHOD__.'('.array2string($requestid).", '$folderid', $response) $msg, returning ".array2string($ret));
}
else
{
$event['participants'][$uid] = $status;
$ret = $this->calendar->update($event, true); // true = ignore conflicts, as there seems no conflict handling in AS
$msg = $ret ? "new event #$ret created" : "could NOT create event";
ZLog::Write(LOGLEVEL_DEBUG, __LINE__.': '.__METHOD__.'('.array2string($requestid).", '$folderid', $response) $msg, returning ".array2string($ret));
}
return $ret;
}
/**
* Conversation to AS status
*
* @var array
*/
static $status2as = array(
'U' => 0, // unknown
'T' => 2, // tentative
'A' => 3, // accepted
'R' => 4, // decline
// 5 = not responded
);
/**
* Conversation to AS "roles", not really the same thing
*
* @var array
*/
static $role2as = array(
'REQ-PARTICIPANT' => 1, // required
'CHAIR' => 1, // required
'OPT-PARTICIPANT' => 2, // optional
'NON-PARTICIPANT' => 2,
// 3 = ressource
);
/**
* Conversation to AS recurrence types
*
* @var array
*/
static $recur_type2as = array(
calendar_rrule::DAILY => 0,
calendar_rrule::WEEKLY => 1,
calendar_rrule::MONTHLY_MDAY => 2, // monthly
calendar_rrule::MONTHLY_WDAY => 3, // monthly on nth day
calendar_rrule::YEARLY => 5,
// 6 = yearly on nth day (same as 5 on non-leapyears or before March on leapyears)
);
/**
* Changes or adds a message on the server
*
* Timestamps from z-push are in servertime and need to get converted to user-time, as bocalendar_update::save()
* expects user-time!
*
* @param string $folderid
* @param int $_id for change | empty for create new
* @param SyncAppointment $message object to SyncObject to create
* @param ContentParameters $contentParameters
*
* @return array $stat whatever would be returned from StatMessage
*
* This function is called when a message has been changed on the PDA. You should parse the new
* message here and save the changes to disk. The return value must be whatever would be returned
* from StatMessage() after the message has been saved. This means that both the 'flags' and the 'mod'
* properties of the StatMessage() item may change via ChangeMessage().
* Note that this function will never be called on E-mail items as you can't change e-mail items, you
* can only set them as 'read'.
*/
public function ChangeMessage($folderid, $_id, $message, $contentParameters)
{
unset($contentParameters); // unused, but required by function signature
if (!isset($this->calendar)) $this->calendar = new calendar_boupdate();
$old_event = array();
$type = $account = null;
$this->backend->splitID($folderid, $type, $account);
ZLog::Write(LOGLEVEL_DEBUG, __METHOD__."('$folderid', $_id, ".array2string($message).") type='$type', account=$account");
list($id,$recur_date) = explode(':', $_id);
if ($type != 'calendar' || $id && !($old_event = $this->calendar->read($id, $recur_date, false, 'server')))
{
ZLog::Write(LOGLEVEL_DEBUG, __METHOD__."('$folderid',$id,...) Folder wrong or event does not existing");
return false;
}
if ($recur_date) // virtual exception
{
// @todo check if virtual exception needs to be saved as real exception, or only stati need to be changed
ZLog::Write(LOGLEVEL_DEBUG, __METHOD__."('$folderid',$id:$recur_date,".array2string($message).") handling of virtual exception not yet implemented!");
//error_log(__METHOD__."('$folderid',$id:$recur_date,".array2string($message).") handling of virtual exception not yet implemented!");
}
if (!$this->calendar->check_perms($id ? Acl::EDIT : Acl::ADD, $old_event ? $old_event : 0,$account))
{
// @todo: write in users calendar and make account only a participant
ZLog::Write(LOGLEVEL_DEBUG, __METHOD__."('$folderid',$id,...) no rights to add/edit event!");
//error_log(__METHOD__."('$folderid',$id,".array2string($message).") no rights to add/edit event!");
return false;
}
if (!$id) $old_event['owner'] = $account; // we do NOT allow to change the owner of existing events
$event = $this->message2event($message, $account, $old_event);
// store event, ignore conflicts and skip notifications, as AS clients do their own notifications
$skip_notification = false;
if (isset($GLOBALS['egw_info']['user']['preferences']['activesync']['mail-allowSendingInvitations']) &&
$GLOBALS['egw_info']['user']['preferences']['activesync']['mail-allowSendingInvitations']=='send')
{
$skip_notification = true; // to avoid double notification from client AND Server
}
$messages = null;
if (!($id = $this->calendar->update($event, true, true, false, true, $messages, $skip_notification)))
{
ZLog::Write(LOGLEVEL_DEBUG, __METHOD__."('$folderid',$id,...) error saving event=".array2string($event)."!");
return false;
}
// store non-delete exceptions
if ($message->exceptions)
{
foreach($message->exceptions as $exception)
{
if (!$exception->deleted)
{
$ex_event = $event;
unset($ex_event['id']);
unset($ex_event['etag']);
foreach(array_keys($ex_event) as $name)
{
if (substr($name,0,6) == 'recur_') unset($ex_event[$name]);
}
$ex_event['recur_type'] = calendar_rrule::NONE;
if ($event['id'] && ($ex_events = $this->calendar->search(array(
'user' => $account,
'enum_recuring' => false,
'daywise' => false,
'filter' => 'owner', // return all possible entries
'query' => array(
'cal_uid' => $event['uid'],
'cal_recurrence' => $exception->exceptionstarttime, // in servertime
),
))))
{
$ex_event = array_shift($ex_events);
$participants = $ex_event['participants'];
}
else
{
$participants = $event['participants'];
}
$save_event = $this->message2event($exception, $account, $ex_event);
$save_event['participants'] = $participants; // not contained in $exception
$save_event['reference'] = $event['id'];
$save_event['recurrence'] = Api\DateTime::server2user($exception->exceptionstarttime);
$ex_ok = $this->calendar->save($save_event);
ZLog::Write(LOGLEVEL_DEBUG, __METHOD__."('$folderid',$id,...) saving exception=".array2string($save_event).' returned '.array2string($ex_ok));
//error_log(__METHOD__."('$folderid',$id,...) exception=".array2string($exception).") saving exception=".array2string($save_event).' returned '.array2string($ex_ok));
}
}
}
ZLog::Write(LOGLEVEL_DEBUG, __METHOD__."('$folderid',$id,...) SUCESS saving event=".array2string($event).", id=$id");
//error_log(__METHOD__."('$folderid',$id,".array2string($message).") SUCESS saving event=".array2string($event).", id=$id");
return $this->StatMessage($folderid, $id);
}
/**
* Parse AS message into EGw event array
*
* @param SyncAppointment $message
* @param int $account
* @param array $event =array()
* @return array
*/
private function message2event(SyncAppointment $message, $account, $event=array())
{
// timestamps (created & modified are updated automatically)
foreach(array(
'start' => 'starttime',
'end' => 'endtime',
) as $key => $attr)
{
if (isset($message->$attr)) $event[$key] = Api\DateTime::server2user($message->$attr);
}
// copying strings
foreach(array(
'title' => 'subject',
'uid' => 'uid',
'location' => 'location',
) as $key => $attr)
{
if (isset($message->$attr)) $event[$key] = $message->$attr;
}
// only change description, if one given, as iOS5 skips description in ChangeMessage after MeetingResponse
// --> we ignore empty / not set description, so description get no longer lost, but you cant empty it via eSync
if (($description = $this->backend->messagenote2note($message->body, $message->rtf, $message->asbody)))
{
$event['description'] = $description;
}
$event['public'] = (int)($message->sensitivity < 1); // 0=normal, 1=personal, 2=private, 3=confidential
// busystatus=(0=free|1=tentative|2=busy|3=out-of-office), EGw has non_blocking=0|1
if (isset($message->busystatus))
{
$event['non_blocking'] = $message->busystatus ? 0 : 1;
}
if (($event['whole_day'] = $message->alldayevent))
{
if ($event['end'] == $event['start']) $event['end'] += 24*3600; // some clients send equal start&end for 1day
$event['end']--; // otherwise our whole-day event code in save makes it one more day!
}
$participants = array();
foreach((array)$message->attendees as $attendee)
{
if ($attendee->type == 3) continue; // we can not identify resources and re-add them anyway later
$matches = null;
if (preg_match('/^noreply-(.*)-uid@egroupware.org$/',$attendee->email,$matches))
{
$uid = $matches[1];
}
elseif (!($uid = $GLOBALS['egw']->accounts->name2id($attendee->email,'account_email')))
{
$search = array(
'email' => $attendee->email,
'email_home' => $attendee->email,
//'n_fn' => $attendee->name, // not sure if we want matches without email
);
// search addressbook for participant
if (!isset($this->addressbook)) $this->addressbook = new Api\Contacts();
if ((list($data) = $this->addressbook->search($search,
array('id','egw_addressbook.account_id as account_id','n_fn'),
'egw_addressbook.account_id IS NOT NULL DESC, n_fn IS NOT NULL DESC',
'','',false,'OR')))
{
$uid = $data['account_id'] ? (int)$data['account_id'] : 'c'.$data['id'];
}
elseif($attendee->name === $attendee->email || empty($attendee->name)) // dont store empty or email as name
{
$uid = 'e'.$attendee->email;
}
else // store just the email
{
$uid = 'e'.$attendee->name.' <'.$attendee->email.'>';
}
}
// as status and (attendee-)type are optional, keep old status, quantity and role, if not specified
if ($event['id'] && isset($event['participants'][$uid]))
{
$status = $event['participants'][$uid];
$quantity = $role = null;
calendar_so::split_status($status, $quantity, $role);
//ZLog::Write(LOGLEVEL_DEBUG, "old status for $uid is status=$status, quantity=$quantitiy, role=$role");
}
// check if just email is an existing attendee (iOS returns email as name too!), keep it to keep status/role if not set
elseif ($event['id'] && (isset($event['participants'][$u='e'.$attendee->email]) ||
(isset($event['participants'][$u='e'.$attendee->name.' <'.$attendee->email.'>']))))
{
$status = $event['participants'][$u];
calendar_so::split_status($status, $quantity, $role);
//ZLog::Write(LOGLEVEL_DEBUG, "old status for $uid as $u is status=$status, quantity=$quantitiy, role=$role");
}
else // set some defaults
{
$status = 'U';
$quantitiy = 1;
$role = 'REQ-PARTICIPANT';
//ZLog::Write(LOGLEVEL_DEBUG, "default status for $uid is status=$status, quantity=$quantitiy, role=$role");
}
if ($role == 'CHAIR') $chair_set = true; // by role from existing participant
if (isset($attendee->attendeestatus) && ($s = array_search($attendee->attendeestatus,self::$status2as)))
{
$status = $s;
}
if ($attendee->email == $message->organizeremail)
{
$role = 'CHAIR';
$chair_set = true;
}
elseif (isset($attendee->attendeetype) &&
!($role == 'CHAIR' && !is_numeric($uid)) && // do not override our external ORGANIZER
($r = array_search($attendee->attendeetype,self::$role2as)) &&
(int)self::$role2as[$role] != $attendee->attendeetype) // if old role gives same type, use old role, as we have a lot more roles then AS
{
$role = $r;
}
//ZLog::Write(LOGLEVEL_DEBUG, "-> status for $uid is status=$status ($s), quantity=$quantitiy, role=$role ($r)");
$participants[$uid] = calendar_so::combine_status($status,$quantitiy,$role);
}
// if organizer is not already participant, add him as chair
if (($uid = $GLOBALS['egw']->accounts->name2id($message->organizeremail,'account_email')) && !isset($participants[$uid]))
{
$participants[$uid] = calendar_so::combine_status($uid == $GLOBALS['egw_info']['user']['account_id'] ?
'A' : 'U',1,'CHAIR');
$chair_set = true;
}
// preserve all resource types not account, contact or email (eg. resources) for existing events
// $account is also preserved, as AS does not add him as participant!
foreach((array)$event['participant_types'] as $type => $parts)
{
if (in_array($type,array('c','e'))) continue; // they are correctly representable in AS
foreach($parts as $id => $status)
{
// accounts are represented correctly, but the event owner which is no participant in AS
if ($type == 'u' && $id != $account) continue;
$uid = calendar_so::combine_user($type, $id);
if (!isset($participants[$uid]))
{
$participants[$uid] = $status;
}
}
}
// add calendar owner as participant, as otherwise event will NOT be in his calendar, in which it was posted
if (!$event['id'] || !$participants || !isset($participants[$account]))
{
$participants[$account] = calendar_so::combine_status($account == $GLOBALS['egw_info']['user']['account_id'] ?
'A' : 'U',1,!$chair_set ? 'CHAIR' : 'REQ-PARTICIPANT');
}
$event['participants'] = $participants;
if (isset($message->categories))
{
$event['category'] = implode(',', array_filter($this->calendar->find_or_add_categories($message->categories, $event),'strlen'));
}
// check if event is recurring and import recur information (incl. timezone)
if ($message->recurrence)
{
if ($message->timezone && !$event['id']) // dont care for timezone, if no new and recurring event
{
$event['tzid'] = self::as2tz(self::_getTZFromSyncBlob(base64_decode($message->timezone)));
}
$event['recur_type'] = $message->recurrence->type == 6 ? calendar_rrule::YEARLY :
array_search($message->recurrence->type, self::$recur_type2as);
$event['recur_interval'] = $message->recurrence->interval;
switch ($event['recur_type'])
{
case calendar_rrule::MONTHLY_WDAY:
// $message->recurrence->weekofmonth is not explicitly stored in egw, just taken from start date
// fall throught
case calendar_rrule::WEEKLY:
$event['recur_data'] = $message->recurrence->dayofweek; // 1=Su, 2=Mo, 4=Tu, .., 64=Sa
break;
case calendar_rrule::MONTHLY_MDAY:
// $message->recurrence->dayofmonth is not explicitly stored in egw, just taken from start date
break;
case calendar_rrule::YEARLY:
// $message->recurrence->(dayofmonth|monthofyear) is not explicitly stored in egw, just taken from start date
break;
}
if ($message->recurrence->until)
{
$event['recur_enddate'] = Api\DateTime::server2user($message->recurrence->until);
}
$event['recur_exception'] = array();
if ($message->exceptions)
{
foreach($message->exceptions as $exception)
{
$event['recur_exception'][] = Api\DateTime::server2user($exception->exceptionstarttime);
}
$event['recur_exception'] = array_unique($event['recur_exception']);
}
if ($message->recurrence->occurrences > 0)
{
// calculate enddate from occurences count, as we only support enddate
$count = $message->recurrence->occurrences;
foreach(calendar_rrule::event2rrule($event, true) as $rtime) // true = timestamps are user time here, because of save!
{
if (--$count <= 0) break;
}
$event['recur_enddate'] = $rtime->format('ts');
}
}
// only import alarms in own calendar
if ($message->reminder && $account == $GLOBALS['egw_info']['user']['account_id'])
{
foreach((array)$event['alarm'] as $alarm)
{
if (($alarm['all'] || $alarm['owner'] == $account) && $alarm['offset'] == 60*$message->reminder)
{
$alarm = true; // alarm already exists --> do nothing
break;
}
}
if ($alarm !== true) // new alarm
{
// delete all earlier alarms of that user
// user get's per AS only the earliest alarm, as AS only supports one alarm
// --> if a later alarm is returned, user probably modifed an existing alarm
foreach((array)$event['alarm'] as $key => $alarm)
{
if ($alarm['owner'] == $account && $alarm['offset'] > 60*$message->reminder)
{
unset($event['alarm'][$key]);
}
}
$event['alarm'][] = $alarm = array(
'owner' => $account,
'offset' => 60*$message->reminder,
);
}
}
return $event;
}
/**
* Creates or modifies a folder
*
* @param string $id of the parent folder
* @param string $oldid => if empty -> new folder created, else folder is to be renamed
* @param string $displayname => new folder name (to be created, or to be renamed to)
* @param string $type folder type, ignored in IMAP
*
* @return array|boolean stat array or false on error
*/
public function ChangeFolder($id, $oldid, $displayname, $type)
{
ZLog::Write(LOGLEVEL_DEBUG, __METHOD__."('$id', '$oldid', '$displayname', $type) NOT supported!");
return false;
}
/**
* Deletes (really delete) a Folder
*
* @param string $parentid of the folder to delete
* @param string $id of the folder to delete
*
* @return
* @TODO check what is to be returned
*/
public function DeleteFolder($parentid, $id)
{
ZLog::Write(LOGLEVEL_DEBUG, __METHOD__."('$parentid', '$id') NOT supported!");
return false;
}
/**
* Moves a message from one folder to another
*
* @param $folderid of the current folder
* @param $id of the message
* @param $newfolderid
* @param ContentParameters $contentParameters
*
* @return $newid as a string | boolean false on error
*
* After this call, StatMessage() and GetMessageList() should show the items
* to have a new parent. This means that it will disappear from GetMessageList() will not return the item
* at all on the source folder, and the destination folder will show the new message
*/
public function MoveMessage($folderid, $id, $newfolderid, $contentParameters)
{
ZLog::Write(LOGLEVEL_DEBUG, __METHOD__."('$folderid', $id, '$newfolderid',".array2string($contentParameters).") NOT supported!");
return false;
}
/**
* Delete (really delete) a message in a folder
*
* @param $folderid
* @param $id
* @param ContentParameters $contentParameters
*
* @return boolean true on success, false on error, diffbackend does NOT use the returnvalue
*
* @DESC After this call has succeeded, a call to
* GetMessageList() should no longer list the message. If it does, the message will be re-sent to the PDA
* as it will be seen as a 'new' item. This means that if you don't implement this function, you will
* be able to delete messages on the PDA, but as soon as you sync, you'll get the item back
*/
public function DeleteMessage($folderid, $id, $contentParameters)
{
unset($contentParameters); // not used, but required by function signature
if (!isset($this->caledar)) $this->calendar = new calendar_boupdate();
$ret = $this->calendar->delete($id);
ZLog::Write(LOGLEVEL_DEBUG, __METHOD__."('$folderid', $id) delete($id) returned ".array2string($ret));
return $ret;
}
/**
* This should change the 'read' flag of a message on disk. The $flags
* parameter can only be '1' (read) or '0' (unread). After a call to
* SetReadFlag(), GetMessageList() should return the message with the
* new 'flags' but should not modify the 'mod' parameter. If you do
* change 'mod', simply setting the message to 'read' on the PDA will trigger
* a full resync of the item from the server
*
* @param string $folderid id of the folder
* @param string $id id of the message
* @param int $flags read flag of the message
* @param ContentParameters $contentParameters
*
* @access public
* @return boolean status of the operation
* @throws StatusException could throw specific SYNC_STATUS_* exceptions
*/
function SetReadFlag($folderid, $id, $flags, $contentParameters)
{
unset($contentParameters); // not used, but required by function signature
ZLog::Write(LOGLEVEL_DEBUG, __METHOD__."('$folderid', $id, ".array2string($flags)." NOT supported!");
return false;
}
/**
* modify olflags (outlook style) flag of a message
*
* @param $folderid
* @param $id
* @param $flags
*
* @DESC The $flags parameter must contains the poommailflag Object
*/
function ChangeMessageFlag($folderid, $id, $flags)
{
ZLog::Write(LOGLEVEL_DEBUG, __METHOD__."('$folderid', $id, ".array2string($flags)." NOT supported!");
return false;
}
/**
* Get specified item from specified folder.
*
* Timezone wise we supply zpush with timestamps in servertime (!), which it "converts" in streamer::formatDate($ts)
* via gmstrftime("%Y%m%dT%H%M%SZ", $ts) to UTC times.
* Timezones are only used to get correct recurring events!
*
* @param string $folderid
* @param string|array $id cal_id or event array (used internally)
* @param ContentParameters $contentparameters
* @param string $class ='SyncAppointment' or 'SyncAppointmentException'
* @return SyncAppointment|boolean false on error
*/
public function GetMessage($folderid, $id, $contentparameters, $class='SyncAppointment')
{
if (!isset($this->calendar)) $this->calendar = new calendar_boupdate();
//error_log(__METHOD__.__LINE__.array2string($contentparameters).function_backtrace());
$truncsize = Utils::GetTruncSize($contentparameters->GetTruncation());
$mimesupport = $contentparameters->GetMimeSupport();
$bodypreference = $contentparameters->GetBodyPreference(); /* fmbiete's contribution r1528, ZP-320 */
ZLog::Write(LOGLEVEL_DEBUG, __METHOD__."('$folderid', ".array2string($id).", truncsize=$truncsize, bodyprefence=".array2string($bodypreference).", mimesupport=$mimesupport)");
$type = $account = null;
$this->backend->splitID($folderid, $type, $account);
if (is_array($id))
{
$event = $id;
$id = $event['id'];
}
else
{
list($id,$recur_date) = explode(':',$id);
if ($type != 'calendar' || !($event = $this->calendar->read($id,$recur_date,false,'server',$account)))
{
error_log(__METHOD__."('$folderid', $id, ...) read($id,null,false,'server',$account) returned false");
return false;
}
}
ZLog::Write(LOGLEVEL_DEBUG, __METHOD__."($folderid,$id,...) start=$event[start]=".date('Y-m-d H:i:s',$event['start']).", recurrence=$event[recurrence]=".date('Y-m-d H:i:s',$event['recurrence']));
foreach((array)$event['recur_exception'] as $ex)
{
ZLog::Write(LOGLEVEL_DEBUG, "exception=$ex=".date('Y-m-d H:i:s',$ex));
}
$message = new $class();
// set timezone
try {
$as_tz = self::tz2as($event['tzid']);
$message->timezone = base64_encode(self::_getSyncBlobFromTZ($as_tz));
}
catch(Exception $e) {
unset($e);
// z-push (2.3 at least) requires a timezone for recurring events
if ($event['recur_type']) $message->timezone = self::UTC_BLOB;
}
// copying timestamps (they are already read in servertime, so non tz conversation)
foreach(array(
'start' => 'starttime',
'end' => 'endtime',
'created' => 'dtstamp',
'modified' => 'dtstamp',
) as $key => $attr)
{
if (!empty($event[$key])) $message->$attr = $event[$key];
}
if (($message->alldayevent = (int)calendar_bo::isWholeDay($event)))
{
++$message->endtime; // EGw all-day-events are 1 sec shorter!
}
// copying strings
foreach(array(
'title' => 'subject',
'uid' => 'uid',
'location' => 'location',
) as $key => $attr)
{
if (!empty($event[$key])) $message->$attr = $event[$key];
}
// appoint description
if ($bodypreference == false)
{
$message->body = $event['description'];
$message->bodysize = strlen($message->body);
$message->bodytruncated = 0;
}
else
{
if (strlen($event['description']) > 0)
{
ZLog::Write(LOGLEVEL_DEBUG, "airsyncbasebody!");
$message->asbody = new SyncBaseBody();
$message->nativebodytype=1;
$this->backend->note2messagenote($event['description'], $bodypreference, $message->asbody);
}
}
$message->organizername = $GLOBALS['egw']->accounts->id2name($event['owner'],'account_fullname');
// at least iOS calendar crashes, if organizer has no email address (true = generate an email, if user has none)
$message->organizeremail = $GLOBALS['egw']->accounts->id2name($event['owner'], 'account_email', true);
$message->sensitivity = $event['public'] ? 0 : 2; // 0=normal, 1=personal, 2=private, 3=confidential
// busystatus=(0=free|1=tentative|2=busy|3=out-of-office), EGw has non_blocking=0|1
$message->busystatus = $event['non_blocking'] ? 0 : 2;
$message->attendees = array();
foreach($event['participants'] as $uid => $status)
{
// we send all participants (incl. organizer), as this is what Exchange also does
$quantity = $role = null;
calendar_so::split_status($status, $quantity, $role);
$attendee = new SyncAttendee();
$attendee->attendeestatus = (int)self::$status2as[$status];
$attendee->attendeetype = (int)self::$role2as[$role];
if (is_numeric($uid))
{
$attendee->name = $GLOBALS['egw']->accounts->id2name($uid,'account_fullname');
$attendee->email = $GLOBALS['egw']->accounts->id2name($uid, 'account_email', true);
}
else
{
list($info) = $i = $this->calendar->resources[$uid[0]]['info'] ?
ExecMethod($this->calendar->resources[$uid[0]]['info'],substr($uid,1)) : array(false);
if (!$info) continue;
if (!$info['email'] && $info['responsible'])
{
$info['email'] = $GLOBALS['egw']->accounts->id2name($info['responsible'], 'account_email', true);
}
$attendee->name = empty($info['cn']) ? $info['name'] : $info['cn'];
$attendee->email = $info['email'];
// external organizer: make him AS organizer, to get correct notifications
if ($role == 'CHAIR' && $uid[0] == 'e' && !empty($attendee->email))
{
$message->organizername = $attendee->name;
$message->organizeremail = $attendee->email;
ZLog::Write(LOGLEVEL_DEBUG, __METHOD__."($folderid, $id, ...) external organizer detected (role=$role, uid=$uid), set as AS organizer: $message->organizername <$message->organizeremail>");
}
if ($uid[0] == 'r') $attendee->type = 3; // 3 = resource
}
// email must NOT be empty, but MAY be an arbitrary text
if (empty($attendee->email)) $attendee->email = 'noreply-'.$uid.'-uid@egroupware.org';
$message->attendees[] = $attendee;
}
$message->categories = array();
foreach($event['category'] ? explode(',',$event['category']) : array() as $cat_id)
{
$message->categories[] = Api\Categories::id2name($cat_id);
}
// recurring information, only if not a single recurrence eg. virtual exception (!$recur_date)
if ($event['recur_type'] != calendar_rrule::NONE && !$recur_date)
{
$message->recurrence = $recurrence = new SyncRecurrence();
$rrule = calendar_rrule::event2rrule($event,false); // false = timestamps in $event are servertime
$recurrence->type = (int)self::$recur_type2as[$rrule->type];
$recurrence->interval = $rrule->interval;
switch ($rrule->type)
{
case calendar_rrule::MONTHLY_WDAY:
$recurrence->weekofmonth = $rrule->monthly_byday_num >= 1 ?
$rrule->monthly_byday_num : 5; // 1..5=last week of month, not -1
// fall throught
case calendar_rrule::WEEKLY:
$recurrence->dayofweek = $rrule->weekdays; // 1=Su, 2=Mo, 4=Tu, .., 64=Sa
break;
case calendar_rrule::MONTHLY_MDAY:
$recurrence->dayofmonth = $rrule->monthly_bymonthday >= 1 ? // 1..31
$rrule->monthly_bymonthday : 31; // not -1 for last day of month!
break;
case calendar_rrule::YEARLY:
$recurrence->dayofmonth = (int)$rrule->time->format('d'); // 1..31
$recurrence->monthofyear = (int)$rrule->time->format('m'); // 1..12
break;
}
if ($rrule->enddate) // enddate is only a date, but AS needs a time incl. correct starttime!
{
$enddate = clone $rrule->time;
$enddate->setDate($rrule->enddate->format('Y'), $rrule->enddate->format('m'),
$rrule->enddate->format('d'));
$recurrence->until = $enddate->format('server');
}
if ($rrule->exceptions)
{
// search real / non-virtual exceptions
if (!empty($event['uid']))
{
$ex_events =& $this->calendar->search(array(
'query' => array('cal_uid' => $event['uid']),
'filter' => 'owner', // return all possible entries
'daywise' => false,
'date_format' => 'server',
));
}
else
{
ZLog::Write(LOGLEVEL_DEBUG, __METHOD__.__LINE__." Exceptions found but no UID given for Event:".$event['id'].' Exceptions:'.array2string($event['recur_exception']));
}
if (count($ex_events)>=1) ZLog::Write(LOGLEVEL_DEBUG, __METHOD__.__LINE__." found ".count($ex_events)." exeptions for event with UID/ID:".$event['uid'].'/'.$event['id']);
$message->exceptions = array();
foreach($ex_events as $ex_event)
{
if ($ex_event['id'] == $event['id']) continue; // ignore series master
$exception = $this->GetMessage($folderid, $ex_event, $contentparameters, 'SyncAppointmentException');
$exception->exceptionstarttime = $exception_time = $ex_event['recurrence'];
foreach(array('attendees','recurrence','uid','timezone','organizername','organizeremail') as $not_supported)
{
$exception->$not_supported = null; // not allowed in exceptions :-(
}
$exception->deleted = 0;
if (($key = array_search($exception_time,$event['recur_exception'])) !== false)
{
unset($event['recur_exception'][$key]);
}
ZLog::Write(LOGLEVEL_DEBUG, __METHOD__."() added exception ".date('Y-m-d H:i:s',$exception_time).' '.array2string($exception));
$message->exceptions[] = $exception;
}
// add rest of exceptions as deleted
foreach($event['recur_exception'] as $exception_time)
{
if (!empty($exception_time))
{
if (empty($event['uid'])) ZLog::Write(LOGLEVEL_DEBUG, __METHOD__.__LINE__." BEWARE no UID given for this event:".$event['id'].' but exception is set for '.$exception_time);
$exception = new SyncAppointmentException(); // exceptions seems to be full SyncAppointments, with only starttime required
$exception->deleted = 1;
$exception->exceptionstarttime = $exception_time;
ZLog::Write(LOGLEVEL_DEBUG, __METHOD__."() added deleted exception ".date('Y-m-d H:i:s',$exception_time).' '.array2string($exception));
$message->exceptions[] = $exception;
}
}
}
/* disabled virtual exceptions for now, as AS does NOT support changed participants or status
// add virtual exceptions here too (get_recurrence_exceptions should be able to return real-exceptions too!)
foreach($this->calendar->so->get_recurrence_exceptions($event,
Api\DateTime::$server_timezone->getName(), $cutoffdate, 0, 'all') as $exception_time)
{
// exceptions seems to be full SyncAppointments, with only exceptionstarttime required
$exception = $this->GetMessage($folderid, $event['id'].':'.$exception_time, $contentparameters);
$exception->deleted = 0;
$exception->exceptionstarttime = $exception_time;
ZLog::Write(LOGLEVEL_DEBUG, __METHOD__."() added virtual exception ".date('Y-m-d H:i:s',$exception_time).' '.array2string($exception));
$message->exceptions[] = $exception;
}*/
//ZLog::Write(LOGLEVEL_DEBUG, __METHOD__."($id) message->exceptions=".array2string($message->exceptions));
}
// only return alarms if in own calendar
if ($account == $GLOBALS['egw_info']['user']['account_id'] && $event['alarm'])
{
foreach($event['alarm'] as $alarm)
{
if ($alarm['all'] || $alarm['owner'] == $account)
{
$message->reminder = $alarm['offset']/60; // is in minutes, not seconds as in EGw
break; // AS supports only one alarm! (we use the next/earliest one)
}
}
}
//$message->meetingstatus;
return $message;
}
/**
* StatMessage should return message stats, analogous to the folder stats (StatFolder). Entries are:
* 'id' => Server unique identifier for the message. Again, try to keep this short (under 20 chars)
* 'flags' => simply '0' for unread, '1' for read
* 'mod' => modification signature. As soon as this signature changes, the item is assumed to be completely
* changed, and will be sent to the PDA as a whole. Normally you can use something like the modification
* time for this field, which will change as soon as the contents have changed.
*
* @param string $folderid
* @param int|array $id event id or array or cal_id:recur_date for virtual exception
* @return array
*/
public function StatMessage($folderid, $id)
{
unset($folderid); // not used ($id is unique), but required by function signature
if (!isset($this->calendar)) $this->calendar = new calendar_boupdate();
$nul = null;
if (!($etag = $this->calendar->get_etag($id, $nul, true, true))) // last true: $only_master=true
{
$stat = false;
// error_log why access is denied (should never happen for everything returned by calendar_bo::search)
$backup = $this->calendar->debug;
//$this->calendar->debug = 2;
list($id) = explode(':',$id);
$this->calendar->check_perms(calendar_bo::ACL_FREEBUSY, $id, 0, 'server');
$this->calendar->debug = $backup;
}
else
{
$stat = array(
'mod' => $etag,
'id' => is_array($id) ? $id['id'] : $id,
'flags' => 1,
);
}
//ZLog::Write(LOGLEVEL_DEBUG, __METHOD__."('$folderid',".array2string(is_array($id) ? $id['id'] : $id).") returning ".array2string($stat));
return $stat;
}
/**
* Return a changes array
*
* if changes occurr default diff engine computes the actual changes
*
* @param string $folderid
* @param string &$syncstate on return new syncstate
*/
function AlterPingChanges($folderid, &$syncstate)
{
$type = $owner = null;
$this->backend->splitID($folderid, $type, $owner);
if ($type != 'calendar') return false;
if (!isset($this->calendar)) $this->calendar = new calendar_boupdate();
//$ctag = $this->calendar->get_ctag($owner,'owner',true); // true only consider recurrence master
$syncstate = $this->calendar->get_ctag($owner,false,true); // we only want to fetch the owners events, where he is a participant too
// workaround for syncstate = 0 when calendar is empty causes synctate to not return 0 but array resulting in foldersync loop
if ($syncstate == 0) $syncstate = 1;
ZLog::Write(LOGLEVEL_DEBUG, __METHOD__."('$folderid', ...) type='$type', owner=$owner --> syncstate='$syncstate'");
}
/**
* AS Timezone blob for UTC
*/
const UTC_BLOB = 'AAAAAAAoAEcATQBUACkAIABHAHIAZQBlAG4AdwBpAGMAaAAgAE0AZQBhAG4AIABUAGkAbQBlADoAIABEAHUAYgBsAGkAAAoAAAAFAAIAAAAAAAAAAAAAAAAoAEcATQBUACkAIABHAHIAZQBlAG4AdwBpAGMAaAAgAE0AZQBhAG4AIABUAGkAbQBlADoAIABEAHUAYgBsAGkAAAMAAAAFAAEAAAAAAAAAxP///w==';
/**
* Return AS timezone data from given timezone and time
*
* AS spezifies the timezone by the date it changes to dst and back and the offsets.
* Unfortunately this data is not available from PHP's DateTime(Zone) class.
* Just given the exact time of the next transition, which is available via DateTimeZone::getTransistions(),
* will fail for recurring events longer then a year, as the transition date/time changes!
*
* We use now the RRule given in the iCal timezone defintion available via calendar_timezones::tz2id($tz,'component').
*
* Not every timezone uses DST, in which case only bias matters and dstbias=0
* (probably all other values should be 0, as MapiMapping::_getGMTTZ() in backend/ics.php does it).
*
* For southern hermisphere DST in southern winter (eg. January), Active Sync implementation of iPhone
* uses a negative dstbias (eg. -60) and an accordingly moved start- and end-time.
* For Pacific/Auckland TZ iPhone AS implementation uses -720=-12h instead of 720=+12h.
* Both are corrected now in our Active Sync timezone generation, as we can not find
* matching timezones for incomming timezone data. iPhone seems not to care on receiving about the above.
*
* @param string|DateTimeZone $tz timezone, timezone name (eg. "Europe/Berlin") or ical with VTIMEZONE
* @return array with values for keys:
* - "bias": timezone offset from UTC in minutes for NO DST
* - "dstendmonth", "dstendday", "dstendweek", "dstendhour", "dstendminute", "dstendsecond", "dstendmillis"
* - "stdbias": seems not to be used
* - "dststartmonth", "dststartday", "dststartweek", "dststarthour", "dststartminute", "dststartsecond", "dststartmillis"
* - "dstbias": offset in minutes for no DST --> DST, usually 60 or 0 for no DST
*
* @link http://download.microsoft.com/download/5/D/D/5DD33FDF-91F5-496D-9884-0A0B0EE698BB/%5BMS-ASDTYPE%5D.pdf
* @throws Api\Exception\AssertionFailed if no vtimezone data found for given timezone
*/
static public function tz2as($tz)
{
/*
BEGIN:VTIMEZONE
TZID:Europe/Berlin
X-LIC-LOCATION:Europe/Berlin
BEGIN:DAYLIGHT
TZOFFSETFROM:+0100
--> bias: -60 min
TZOFFSETTO:+0200
--> dstbias: +1000 - +0200 = +0100 = -60 min
TZNAME:CEST
DTSTART:19700329T020000
RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=3
--> dststart: month: 3, day: SU(0???), week: -1|5, hour: 2, minute, second, millis: 0
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:+0200
TZOFFSETTO:+0100
TZNAME:CET
DTSTART:19701025T030000
RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=10
--> dstend: month: 10, day: SU(0???), week: -1|5, hour: 3, minute, second, millis: 0
END:STANDARD
END:VTIMEZONE
*/
$data = array(
'bias' => 0,
'stdbias' => 0,
'dstbias' => 0,
'dststartyear' => 0, 'dststartmonth' => 0, 'dststartday' => 0, 'dststartweek' => 0,
'dststarthour' => 0, 'dststartminute' => 0, 'dststartsecond' => 0, 'dststartmillis' => 0,
'dstendyear' => 0, 'dstendmonth' => 0, 'dstendday' => 0, 'dstendweek' => 0,
'dstendhour' => 0, 'dstendminute' => 0, 'dstendsecond' => 0, 'dstendmillis' => 0,
);
if ($tz === 'UTC') return $data;
$name = $component = is_a($tz,'DateTimeZone') ? $tz->getName() : $tz;
if (strpos($component, 'VTIMEZONE') === false) $component = calendar_timezones::tz2id($name,'component');
// parse ical timezone defintion
$ical = self::ical2array($component);
$standard = $ical['VTIMEZONE']['STANDARD'];
$daylight = $ical['VTIMEZONE']['DAYLIGHT'];
if (!isset($standard))
{
$matches = null;
if (preg_match('/^etc\/gmt([+-])([0-9]+)$/i',$name,$matches))
{
$standard = array(
'TZOFFSETTO' => sprintf('%s%02d00',$matches[1],$matches[2]),
'TZOFFSETFROM' => sprintf('%s%02d00',$matches[1],$matches[2]),
);
unset($daylight);
}
else
{
throw new Api\Exception\AssertionFailed("NO standard component for '$name' in '$component'!");
}
}
// get bias and dstbias from standard component, which is present in all tz's
// (dstbias is relative to bias and almost always 60 or 0)
$data['bias'] = -(60 * substr($standard['TZOFFSETTO'],0,-2) + substr($standard['TZOFFSETTO'],-2));
$data['dstbias'] = -(60 * substr($standard['TZOFFSETFROM'],0,-2) + substr($standard['TZOFFSETFROM'],-2) + $data['bias']);
// check if we have an additional DAYLIGHT component and both have a RRULE component --> tz uses daylight saving
if (isset($standard['RRULE']) && isset($daylight) && isset($daylight['RRULE']))
{
foreach(array('dststart' => $daylight,'dstend' => $standard) as $prefix => $comp)
{
// fix RRULE order
$comp['RRULE'] = preg_replace('/FREQ=YEARLY;BYMONTH=(\d+);BYDAY=(.*)/',
'FREQ=YEARLY;BYDAY=$2;BYMONTH=$1', $comp['RRULE']);
if (preg_match('/FREQ=YEARLY;BYDAY=(.*);BYMONTH=(\d+)/',$comp['RRULE'],$matches))
{
$data[$prefix.'month'] = (int)$matches[2];
$data[$prefix.'week'] = (int)$matches[1];
// -1 for last week might be 5 for as as in recuring events definition
// seems for start 1SU is always returned with week=5, like -1SU
if ($data[$prefix.'week'] < 0 || $prefix == 'dststart' && $matches[1] == '1SU')
{
$data[$prefix.'week'] = 5;
}
// if both start and end use 1SU use week=5 and decrement month
if ($prefix == 'dststart') $start_byday = $matches[1];
if ($prefix == 'dstend' && $matches[1] == '1SU' && $start_byday == '1SU')
{
$data[$prefix.'week'] = 5;
if ($prefix == 'dstend') $data[$prefix.'month'] -= 1;
}
static $day2int = array('SU'=>0,'MO'=>1,'TU'=>2,'WE'=>3,'TH'=>4,'FR'=>5,'SA'=>6);
$data[$prefix.'day'] = (int)$day2int[substr($matches[1],-2)];
}
if (preg_match('/^\d{8}T(\d{6})$/',$comp['DTSTART'],$matches))
{
$data[$prefix.'hour'] = (int)substr($matches[1],0,2)+($prefix=='dststart'?-1:1)*$data['dstbias']/60;
$data[$prefix.'minute'] = (int)substr($matches[1],2,2)+($prefix=='dststart'?-1:1)*$data['dstbias']%60;
$data[$prefix.'second'] = (int)substr($matches[1],4,2);
}
}
// for southern hermisphere, were DST is in January, we have to swap start- and end-hour/-minute
if ($data['dststartmonth'] > $data['dstendmonth'])
{
$start = $data['dststarthour']; $data['dststarthour'] = $data['dstendhour']; $data['dstendhour'] = $start;
$end = $data['dststartminute']; $data['dststartminute'] = $data['dstendminute']; $data['dstendminute'] = $end;
}
}
//error_log(__METHOD__."('$name') returning ".array2string($data));
return $data;
}
/**
* Simple iCal parser:
*
* BEGIN:VTIMEZONE
* TZID:Europe/Berlin
* X-LIC-LOCATION:Europe/Berlin
* BEGIN:DAYLIGHT
* TZOFFSETFROM:+0100
* TZOFFSETTO:+0200
* TZNAME:CEST
* DTSTART:19700329T020000
* RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=3
* END:DAYLIGHT
* BEGIN:STANDARD
* TZOFFSETFROM:+0200
* TZOFFSETTO:+0100
* TZNAME:CET
* DTSTART:19701025T030000
* RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=10
* END:STANDARD
* END:VTIMEZONE
*
* Array
* (
* [VTIMEZONE] => Array
* (
* [TZID] => Europe/Berlin
* [X-LIC-LOCATION] => Europe/Berlin
* [DAYLIGHT] => Array
* (
* [TZOFFSETFROM] => +0100
* [TZOFFSETTO] => +0200
* [TZNAME] => CEST
* [DTSTART] => 19700329T020000
* [RRULE] => FREQ=YEARLY;BYDAY=-1SU;BYMONTH=3
* )
* [STANDARD] => Array
* (
* [TZOFFSETFROM] => +0200
* [TZOFFSETTO] => +0100
* [TZNAME] => CET
* [DTSTART] => 19701025T030000
* [RRULE] => FREQ=YEARLY;BYDAY=-1SU;BYMONTH=10
* )
* )
* )
*
* @param string|array $ical lines of ical file
* @return array with parsed ical components
*/
static public function ical2array(&$ical,$section=null)
{
$arr = array();
if (!is_array($ical)) $ical = preg_split("/[\r\n]+/m", $ical);
while (($line = array_shift($ical)))
{
list($name,$value) = explode(':',$line,2);
if ($name == 'BEGIN')
{
$arr[$value] = self::ical2array($ical,$value);
}
elseif($name == 'END')
{
if ($section && $section==$value) return $arr;
break;
}
else
{
$arr[$name] = $value;
}
}
return $arr;
}
/**
* Get timezone from AS timezone data
*
* Here we can only loop through all available timezones (starting with the users timezone) and
* try to find a timezone matching the change data and offsets specified in $data.
* This conversation is not unique, as multiple timezones can match the given data or none!
*
* @param array $data
* @return string timezone name, eg. "Europe/Berlin" or 'UTC' if NO matching timezone found
*/
public static function as2tz(array $data)
{
static $cache=null; // some caching withing the request
unset($data['name']); // not used, but can stall the match
$key = serialize($data);
for($n = 0; !isset($cache[$key]); ++$n)
{
if (!$n) // check users timezone first
{
$tz = Api\DateTime::$user_timezone->getName();
}
elseif (!($tz = calendar_timezones::id2tz($n))) // no further timezones to check
{
$cache[$key] = 'UTC';
error_log(__METHOD__.'('.array2string($data).') NO matching timezone found --> using UTC now!');
break;
}
try {
if (self::tz2as($tz) == $data)
{
$cache[$key] = $tz;
break;
}
}
catch(Exception $e) {
unset($e);
// simpy ignore that, as it only means $tz can NOT be converted, because it has no VTIMEZONE component
}
}
return $cache[$key];
}
/**
* Unpack timezone info from Sync
*
* copied from backend/ics.php
*/
static public function _getTZFromSyncBlob($data)
{
$tz = unpack( "lbias/a64name/vdstendyear/vdstendmonth/vdstendday/vdstendweek/vdstendhour/vdstendminute/vdstendsecond/vdstendmillis/" .
"lstdbias/a64name/vdststartyear/vdststartmonth/vdststartday/vdststartweek/vdststarthour/vdststartminute/vdststartsecond/vdststartmillis/" .
"ldstbias", $data);
return $tz;
}
/**
* Pack timezone info for Sync
*
* copied from backend/ics.php
*/
static public function _getSyncBlobFromTZ($tz)
{
$packed = pack("la64vvvvvvvv" . "la64vvvvvvvv" . "l",
$tz["bias"], "", 0, $tz["dstendmonth"], $tz["dstendday"], $tz["dstendweek"], $tz["dstendhour"], $tz["dstendminute"], $tz["dstendsecond"], $tz["dstendmillis"],
$tz["stdbias"], "", 0, $tz["dststartmonth"], $tz["dststartday"], $tz["dststartweek"], $tz["dststarthour"], $tz["dststartminute"], $tz["dststartsecond"], $tz["dststartmillis"],
$tz["dstbias"]);
return $packed;
}
/**
* Populates $settings for the preferences
*
* @param array|string $hook_data
* @return array
*/
function egw_settings($hook_data)
{
$cals = array();
if (!$hook_data['setup'] && in_array($hook_data['type'], array('user', 'group')))
{
foreach (calendar_bo::list_calendars($hook_data['account_id']) as $entry)
{
$account_id = $entry['grantor'];
$cals[$account_id] = $entry['name'];
}
if ($hook_data['account_id'] > 0) unset($cals[$hook_data['account_id']]); // skip current user
}
$cals['G'] = lang('Primary group');
$cals['A'] = lang('All');
// allow to force "none", to not show the prefs to the users
if ($GLOBALS['type'] == 'forced')
{
$cals['N'] = lang('None');
}
$settings['calendar-cals'] = array(
'type' => 'multiselect',
'label' => 'Additional calendars to sync',
'help' => 'Not all devices support additonal calendars. Your personal calendar is always synchronised.',
'name' => 'calendar-cals',
'values' => $cals,
'xmlrpc' => True,
'admin' => False,
);
return $settings;
}
}
/**
* Testcode for active sync timezone stuff
*
* You need to comment implements activesync_plugin_write
*/
if (isset($_SERVER['SCRIPT_FILENAME']) && realpath($_SERVER['SCRIPT_FILENAME']) == __FILE__) // some tests
{
$GLOBALS['egw_info'] = array(
'flags' => array(
'currentapp' => 'login'
)
);
require_once('../../header.inc.php');
ini_set('display_errors',1);
error_reporting(E_ALL & ~E_NOTICE);
echo "<html><head><title>Conversation of ActiveSync Timezone Blobs to TZID's</title></head>\n<body>\n";
echo "<h3>Conversation of ActiveSync Timezone Blobs to TZID's</h3>\n";
echo "<table border='1'>\n<tbody>\n";
echo "<tr><th>TZID</th><th>bias</th><th>dstbias</th></th><th>dststart</th><th>dstend</th><th>matched TZID</th></tr>\n";
echo "<script>
function toggle_display(pre)
{
pre.style.display = pre.style.display && pre.style.display == 'none' ? 'block' : 'none';
}
</script>\n";
// TZID => AS timezone blobs reported by various devices
foreach(array(
// Exchange 2016 Europe/Berlin
'Europe/Berlin' => 'xP///1cALgAgAEUAdQByAG8AcABlACAAUwB0AGEAbgBkAGEAcgBkACAAVABpAG0AZQAAAAAAAAAAAAAAAAAAAAAAAAAAAAoAAAAFAAMAAAAAAAAAAAAAACgAVQBUAEMAKwAwADEAOgAwADAAKQAgAEEAbQBzAHQAZQByAGQAYQBtACwAIABCAGUAcgBsAGkAbgAsACAAQgAAAAMAAAAFAAIAAAAAAAAAxP///w==',
//'Europe/Berlin' => 'xP///wAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAoAAAAFAAIAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMAAAAFAAMAAAAAAAAAxP///w==',
'Europe/Helsinki' => 'iP///wAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAoAAAAFAAMAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMAAAAFAAQAAAAAAAAAxP///w==',
'Asia/Tokyo' => '5P3//wAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAxP///w==',
'Atlantic/Azores' => 'PAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAoAAAAFAAMAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMAAAAFAAIAAAAAAAAAxP///w==',
'America/Los_Angeles' => '4AEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAsAAAABAAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMAAAACAAMAAAAAAAAAxP///w==',
'America/New_York' => 'LAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAsAAAABAAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMAAAACAAMAAAAAAAAAxP///w==',
'Pacific/Auckland' => 'MP3//wAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAQAAAABAAIAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAkAAAAFAAMAAAAAAAAAxP///w==',
'Australia/Sydney' => 'qP3//wAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMAAAAFAAMAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAoAAAAFAAIAAAAAAAAAxP///w==',
'Etc/GMT+3' => 'TP///wAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA==',
'UTC' => calendar_zpush::UTC_BLOB,
) as $tz => $sync_blob)
{
// get as timezone data for a given timezone
$ical = calendar_timezones::tz2id($tz,'component');
//echo "<pre>".print_r($ical,true)."</pre>\n";
$ical_tz = $ical;
$ical_arr = calendar_zpush::ical2array($ical_tz);
//echo "<pre>".print_r($ical_arr,true)."</pre>\n";
$as_tz = calendar_zpush::tz2as($tz);
//echo "$tz=<pre>".print_r($as_tz,true)."</pre>\n";
$as_tz_org = calendar_zpush::_getTZFromSyncBlob(base64_decode($sync_blob));
echo "sync_blob=<pre>".print_r($as_tz_org,true)."</pre>\n";
// find matching timezone from as data
// this returns the FIRST match, which is in case of Pacific/Auckland eg. Antarctica/McMurdo ;-)
$matched = calendar_zpush::as2tz($as_tz);
//echo array2string($matched);
echo "<tr><td><b onclick='toggle_display(this.nextSibling);' style='cursor:pointer;'>$tz</b><pre style='margin:0; font-size: 90%; display:none;'>$ical</pre></td><td>$as_tz_org[bias]<br/>$as_tz[bias]</td><td>$as_tz_org[dstbias]<br/>$as_tz[dstbias]</td>\n";
foreach(array('dststart','dstend') as $prefix)
{
echo "<td>\n";
foreach(array($as_tz_org,$as_tz) as $n => $arr)
{
$parts = array();
foreach(array('year','month','day','week','hour','minute','second') as $postfix)
{
$failed = $n && $as_tz_org[$prefix.$postfix] !== $as_tz[$prefix.$postfix];
$parts[] = ($failed?'<font color="red">':'').
"<span title='$postfix'>".$arr[$prefix.$postfix].'</span>'.
($failed?'</font>':'');
}
echo implode(' ', $parts).(!$n?'<br/>':'');
}
echo "</td>\n";
}
echo "<td>&nbsp;<br/>".($matched=='UTC'?'<font color="red">':'').$matched.($matched=='UTC'?'</font>':'')."</td></tr>\n";
}
echo "</tbody></table>\n";
echo "</body></html>\n";
}
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