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egroupware_official/calendar/inc/class.calendar_boupdate.inc.php

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<?php
/**
* eGroupWare - Calendar's buisness-object - access + update
*
* @link http://www.egroupware.org
* @package calendar
* @author Ralf Becker <RalfBecker-AT-outdoor-training.de>
* @author Joerg Lehrke <jlehrke@noc.de>
* @copyright (c) 2005-9 by RalfBecker-At-outdoor-training.de
* @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
* @version $Id$
*/
// types of messsages send by calendar_boupdate::send_update
define('MSG_DELETED',0);
define('MSG_MODIFIED',1);
define('MSG_ADDED',2);
define('MSG_REJECTED',3);
define('MSG_TENTATIVE',4);
define('MSG_ACCEPTED',5);
define('MSG_ALARM',6);
define('MSG_DISINVITE',7);
/**
* Class to access AND manipulate all calendar data (business object)
*
* The new UI, BO and SO classes have a strikt definition, in which time-zone they operate:
* UI only operates in user-time, so there have to be no conversation at all !!!
* BO's functions take and return user-time only (!), they convert internaly everything to servertime, because
* SO operates only on server-time
*
* As this BO class deals with dates/times of several types and timezone, each variable should have a postfix
* appended, telling with type it is: _s = seconds, _su = secs in user-time, _ss = secs in server-time, _h = hours
*
* All new BO code (should be true for eGW in general) NEVER use any $_REQUEST ($_POST or $_GET) vars itself.
* Nor does it store the state of any UI-elements (eg. cat-id selectbox). All this is the task of the UI class(es) !!!
*
* All permanent debug messages of the calendar-code should done via the debug-message method of the bocal class !!!
*/
class calendar_boupdate extends calendar_bo
{
/**
* Category ACL allowing to add a given category
*/
const CAT_ACL_ADD = 512;
/**
* Category ACL allowing to change status of a participant
*/
const CAT_ACL_STATUS = 1024;
/**
* name of method to debug or level of debug-messages:
* False=Off as higher as more messages you get ;-)
* 1 = function-calls incl. parameters to general functions like search, read, write, delete
* 2 = function-calls to exported helper-functions like check_perms
* 4 = function-calls to exported conversation-functions like date2ts, date2array, ...
* 5 = function-calls to private functions
* @var mixed
*/
var $debug;
/**
* @var string|boolean $log_file filename to enable the login or false for no update-logging
*/
var $log_file = false;
/**
* Constructor
*/
function __construct()
{
if ($this->debug > 0) $this->debug_message('calendar_boupdate::__construct() started',True);
parent::__construct(); // calling the parent constructor
if ($this->debug > 0) $this->debug_message('calendar_boupdate::__construct() finished',True);
}
/**
* updates or creates an event, it (optionaly) checks for conflicts and sends the necessary notifications
*
* @param array &$event event-array, on return some values might be changed due to set defaults
* @param boolean $ignore_conflicts=false just ignore conflicts or do a conflict check and return the conflicting events
* @param boolean $touch_modified=true touch modificatin time and set modifing user, default true=yes
* @param boolean $ignore_acl=false should we ignore the acl
* @param boolean $updateTS=true update the content history of the event
* @param array &$messages=null messages about because of missing ACL removed participants or categories
* @return mixed on success: int $cal_id > 0, on error false or array with conflicting events (only if $check_conflicts)
* Please note: the events are not garantied to be readable by the user (no read grant or private)!
*/
function update(&$event,$ignore_conflicts=false,$touch_modified=true,$ignore_acl=false,$updateTS=true,&$messages=null)
{
//error_log(__METHOD__."(".array2string($event).",$ignore_conflicts,$touch_modified,$ignore_acl)");
if ($this->debug > 1 || $this->debug == 'update')
{
$this->debug_message('calendar_boupdate::update(%1,ignore_conflict=%2,touch_modified=%3,ignore_acl=%4)',
false,$event,$ignore_conflicts,$touch_modified,$ignore_acl);
}
// check some minimum requirements:
// - new events need start, end and title
// - updated events cant set start, end or title to empty
if (!$event['id'] && (!$event['start'] || !$event['end'] || !$event['title']) ||
$event['id'] && (isset($event['start']) && !$event['start'] || isset($event['end']) && !$event['end'] ||
isset($event['title']) && !$event['title']))
{
return false;
}
if (($new_event = !$event['id'])) // some defaults for new entries
{
// if no owner given, set user to owner
if (!$event['owner']) $event['owner'] = $this->user;
// set owner as participant if none is given
if (!is_array($event['participants']) || !count($event['participants']))
{
$status = $event['owner'] == $this->user ? 'A' : 'U';
$status = calendar_so::combine_status($status, 1, 'CHAIR');
$event['participants'] = array($event['owner'] => $status);
}
}
// check if user has the permission to update / create the event
if (!$ignore_acl && (!$new_event && !$this->check_perms(EGW_ACL_EDIT,$event['id']) ||
$new_event && !$this->check_perms(EGW_ACL_EDIT,0,$event['owner'])) &&
!$this->check_perms(EGW_ACL_ADD,0,$event['owner']))
{
return false;
}
if ($new_event)
{
$event['created'] = $this->now_su;
$event['creator'] = $GLOBALS['egw_info']['user']['account_id'];
}
else
{
$old_event = $this->read((int)$event['id'],null,$ignore_acl);
// if no participants are set, set them from the old event, as we might need them to update recuring events
if (!isset($event['participants'])) $event['participants'] = $old_event['participants'];
//echo "old $event[id]="; _debug_array($old_event);
}
// do we need to check, if user is allowed to invite the invited participants
if ($this->require_acl_invite && ($removed = $this->remove_no_acl_invite($event,$old_event)))
{
// report removed participants back to user
foreach($removed as $key => $account_id)
{
$removed[$key] = $this->participant_name($account_id);
}
$messages[] = lang('%1 participants removed because of missing invite grants',count($removed)).
': '.implode(', ',$removed);
}
// check category based ACL
if ($event['category'])
{
if (!is_array($event['category'])) $event['category'] = explode(',',$event['category']);
if ($old_event && $old_event['category'] && !is_array($old_event['category']))
{
$old_event['category'] = explode(',',$old_event['category']);
}
foreach($event['category'] as $key => $cat_id)
{
// check if user is allowed to update event categories
if ((!$old_event || !in_array($cat_id,$old_event['category'])) &&
self::has_cat_right(self::CAT_ACL_ADD,$cat_id,$this->user) === false)
{
unset($event['category'][$key]);
// report removed category to user
$removed_cats[$cat_id] = $this->categories->id2name($cat_id);
continue; // no further check, as cat was removed
}
// for new or moved events check status of participants, if no category status right --> set all status to 'U' = unknown
if (!$status_reset_to_unknown &&
self::has_cat_right(self::CAT_ACL_STATUS,$cat_id,$this->user) === false &&
(!$old_event || $old_event['start'] != $event['start'] || $old_event['end'] != $event['end']))
{
foreach($event['participants'] as $uid => $status)
{
calendar_so::split_status($status,$q,$r);
if ($status != 'U')
{
$event['participants'][$uid] = calendar_so::combine_status('U',$q,$r);
// todo: report reset status to user
}
}
$status_reset_to_unknown = true; // once is enough
}
}
if ($removed_cats)
{
$messages[] = lang('Category %1 removed because of missing rights',implode(', ',$removed_cats));
}
if ($status_reset_to_unknown)
{
$messages[] = lang('Status of participants set to unknown because of missing category rights');
}
}
// check for conflicts only happens !$ignore_conflicts AND if start + end date are given
if (!$ignore_conflicts && !$event['non_blocking'] && isset($event['start']) && isset($event['end']))
{
$types_with_quantity = array();
foreach($this->resources as $type => $data)
{
if ($data['max_quantity']) $types_with_quantity[] = $type;
}
// get all NOT rejected participants and evtl. their quantity
$quantity = $users = array();
foreach($event['participants'] as $uid => $status)
{
calendar_so::split_status($status,$q,$r);
if ($status[0] == 'R') continue; // ignore rejected participants
if ($uid < 0) // group, check it's members too
{
$users += $GLOBALS['egw']->accounts->members($uid,true);
$users = array_unique($users);
}
$users[] = $uid;
if (in_array($uid[0],$types_with_quantity))
{
$quantity[$uid] = $q;
}
}
$overlapping_events =& $this->search(array(
'start' => $event['start'],
'end' => $event['end'],
'users' => $users,
'ignore_acl' => true, // otherwise we get only events readable by the user
'enum_groups' => true, // otherwise group-events would not block time
));
if ($this->debug > 2 || $this->debug == 'update')
{
$this->debug_message('calendar_boupdate::update() checking for potential overlapping events for users %1 from %2 to %3',false,$users,$event['start'],$event['end']);
}
$max_quantity = $possible_quantity_conflicts = $conflicts = array();
foreach((array) $overlapping_events as $k => $overlap)
{
if ($overlap['id'] == $event['id'] || // that's the event itself
$overlap['id'] == $event['reference'] || // event is an exception of overlap
$overlap['non_blocking']) // that's a non_blocking event
{
continue;
}
if ($this->debug > 3 || $this->debug == 'update')
{
$this->debug_message('calendar_boupdate::update() checking overlapping event %1',false,$overlap);
}
// check if the overlap is with a rejected participant or within the allowed quantity
$common_parts = array_intersect($users,array_keys($overlap['participants']));
foreach($common_parts as $n => $uid)
{
if ($overlap['participants'][$uid][0] == 'R')
{
unset($common_parts[$uid]);
continue;
}
if (is_numeric($uid) || !in_array($uid[0],$types_with_quantity))
{
continue; // no quantity check: quantity allways 1 ==> conflict
}
if (!isset($max_quantity[$uid]))
{
$res_info = $this->resource_info($uid);
$max_quantity[$uid] = $res_info[$this->resources[$uid[0]]['max_quantity']];
}
$quantity[$uid] += max(1,(int) substr($overlap['participants'][$uid],2));
if ($quantity[$uid] <= $max_quantity[$uid])
{
$possible_quantity_conflicts[$uid][] =& $overlapping_events[$k]; // an other event can give the conflict
unset($common_parts[$n]);
continue;
}
// now we have a quantity conflict for $uid
}
if (count($common_parts))
{
if ($this->debug > 3 || $this->debug == 'update')
{
$this->debug_message('calendar_boupdate::update() conflicts with the following participants found %1',false,$common_parts);
}
$conflicts[$overlap['id'].'-'.$this->date2ts($overlap['start'])] =& $overlapping_events[$k];
}
}
// check if we are withing the allowed quantity and if not add all events using that resource
// seems this function is doing very strange things, it gives empty conflicts
foreach($max_quantity as $uid => $max)
{
if ($quantity[$uid] > $max)
{
foreach((array)$possible_quantity_conflicts[$uid] as $conflict)
{
$conflicts[$conflict['id'].'-'.$this->date2ts($conflict['start'])] =& $possible_quantity_conflicts[$k];
}
}
}
unset($possible_quantity_conflicts);
if (count($conflicts))
{
foreach($conflicts as $key => $conflict)
{
$conflict['participants'] = array_intersect_key($conflict['participants'],$event['participants']);
if (!$this->check_perms(EGW_ACL_READ,$conflict))
{
$conflicts[$key] = array(
'id' => $conflict['id'],
'title' => lang('busy'),
'participants' => $conflict['participants'],
'start' => $conflict['start'],
'end' => $conflict['end'],
);
}
}
if ($this->debug > 2 || $this->debug == 'update')
{
$this->debug_message('calendar_boupdate::update() %1 conflicts found %2',false,count($conflicts),$conflicts);
}
return $conflicts;
}
}
// save the event to the database
if ($touch_modified)
{
$event['modified'] = $this->now_su; // we are still in user-time
$event['modifier'] = $GLOBALS['egw_info']['user']['account_id'];
}
//echo "saving $event[id]="; _debug_array($event);
$event2save = $event;
if (!($cal_id = $this->save($event, $ignore_acl, $updateTS)))
{
return $cal_id;
}
$event = $this->read($cal_id); // we re-read the event, in case only partial information was update and we need the full info for the notifies
//echo "new $cal_id="; _debug_array($event);
if ($this->log_file)
{
$this->log2file($event2save,$event,$old_event);
}
// send notifications
if ($new_event)
{
$this->send_update(MSG_ADDED,$event['participants'],'',$event);
}
else // update existing event
{
$this->check4update($event,$old_event);
}
// notify the link-class about the update, as other apps may be subscribt to it
egw_link::notify_update('calendar',$cal_id,$event);
return $cal_id;
}
/**
* Remove participants current user has no right to invite
*
* @param array &$event new event
* @param array $old_event=null old event with already invited participants
* @return array removed participants because of missing invite grants
*/
public function remove_no_acl_invite(array &$event,array $old_event=null)
{
if (!$this->require_acl_invite)
{
return array(); // nothing to check, everyone can invite everyone else
}
if ($event['id'] && is_null($old_event))
{
$old_event = $this->read($event['id']);
}
$removed = array();
foreach($event['participants'] as $uid => $status)
{
if ((is_null($old_event) || !isset($old_event['participants'][$uid])) && !$this->check_acl_invite($uid))
{
unset($event['participants'][$uid]); // remove participant
$removed[] = $uid;
}
}
//echo "<p>".__METHOD__."($event[title],".($old_event?'$old_event':'NULL').") returning ".array2string($removed)."</p>";
return $removed;
}
/**
* Check if current user is allowed to invite a given participant
*
* @param int|string $uid
* @return boolean
*/
public function check_acl_invite($uid)
{
if (!is_numeric($uid)) return true; // nothing implemented for resources so far
if (!$this->require_acl_invite)
{
$ret = true; // no grant required
}
elseif ($this->require_acl_invite == 'groups' && $GLOBALS['egw']->accounts->get_type($uid) != 'g')
{
$ret = true; // grant only required for groups
}
else
{
$ret = $this->check_perms(EGW_ACL_INVITE,0,$uid);
}
//error_log(__METHOD__."($uid) = ".array2string($ret));
//echo "<p>".__METHOD__."($uid) require_acl_invite=$this->require_acl_invite returning ".array2string($ret)."</p>\n";
return $ret;
}
/**
* Check for added, modified or deleted participants AND notify them
*
* @param array $new_event the updated event
* @param array $old_event the event before the update
*/
function check4update($new_event,$old_event)
{
$modified = $added = $deleted = array();
//echo "<p>calendar_boupdate::check4update() new participants = ".print_r($new_event['participants'],true).", old participants =".print_r($old_event['participants'],true)."</p>\n";
// Find modified and deleted participants ...
foreach($old_event['participants'] as $old_userid => $old_status)
{
if(isset($new_event['participants'][$old_userid]))
{
$modified[$old_userid] = $new_event['participants'][$old_userid];
}
else
{
$deleted[$old_userid] = $old_status;
}
}
// Find new participants ...
foreach($new_event['participants'] as $new_userid => $new_status)
{
if(!isset($old_event['participants'][$new_userid]))
{
$added[$new_userid] = 'U';
}
}
//echo "<p>calendar_boupdate::check4update() added=".print_r($added,true).", modified=".print_r($modified,true).", deleted=".print_r($deleted,true)."</p>\n";
if(count($added) || count($modified) || count($deleted))
{
if(count($added))
{
$this->send_update(MSG_ADDED,$added,$old_event,$new_event);
}
if(count($modified))
{
$this->send_update(MSG_MODIFIED,$modified,$old_event,$new_event);
}
if(count($deleted))
{
$this->send_update(MSG_DISINVITE,$deleted,$new_event);
}
}
}
/**
* checks if $userid has requested (in $part_prefs) updates for $msg_type
*
* @param int $userid numerical user-id
* @param array $part_prefs preferces of the user $userid
* @param int $msg_type type of the notification: MSG_ADDED, MSG_MODIFIED, MSG_ACCEPTED, ...
* @param array $old_event Event before the change
* @param array $new_event Event after the change
* @return boolean true = update requested, flase otherwise
*/
function update_requested($userid,$part_prefs,$msg_type,$old_event,$new_event)
{
if ($msg_type == MSG_ALARM)
{
return True; // always True for now
}
$want_update = 0;
// the following switch falls through all cases, as each included the following too
//
$msg_is_response = $msg_type == MSG_REJECTED || $msg_type == MSG_ACCEPTED || $msg_type == MSG_TENTATIVE;
switch($ru = $part_prefs['calendar']['receive_updates'])
{
case 'responses':
if ($msg_is_response)
{
++$want_update;
}
case 'modifications':
if ($msg_type == MSG_MODIFIED)
{
++$want_update;
}
case 'time_change_4h':
case 'time_change':
$diff = max(abs($this->date2ts($old_event['start'])-$this->date2ts($new_event['start'])),
abs($this->date2ts($old_event['end'])-$this->date2ts($new_event['end'])));
$check = $ru == 'time_change_4h' ? 4 * 60 * 60 - 1 : 0;
if ($msg_type == MSG_MODIFIED && $diff > $check)
{
++$want_update;
}
case 'add_cancel':
if ($old_event['owner'] == $userid && $msg_is_response ||
$msg_type == MSG_DELETED || $msg_type == MSG_ADDED || $msg_type == MSG_DISINVITE)
{
++$want_update;
}
break;
case 'no':
break;
}
//echo "<p>calendar_boupdate::update_requested(user=$userid,pref=".$part_prefs['calendar']['receive_updates'] .",msg_type=$msg_type,".($old_event?$old_event['title']:'False').",".($old_event?$old_event['title']:'False').") = $want_update</p>\n";
return $want_update > 0;
}
/**
* sends update-messages to certain participants of an event
*
* @param int $msg_type type of the notification: MSG_ADDED, MSG_MODIFIED, MSG_ACCEPTED, ...
* @param array $to_notify numerical user-ids as keys (!) (value is not used)
* @param array $old_event Event before the change
* @param array $new_event=null Event after the change
* @param int $user=0 User who started the notify, default current user
* @return bool true/false
*/
function send_update($msg_type,$to_notify,$old_event,$new_event=null,$user=0)
{
//echo "<p>".__METHOD__."($msg_type,".array2string($to_notify).",,$new_event[title],$user)</p>\n";
if (!is_array($to_notify))
{
$to_notify = array();
}
$disinvited = $msg_type == MSG_DISINVITE ? array_keys($to_notify) : array();
$owner = $old_event ? $old_event['owner'] : $new_event['owner'];
if ($owner && !isset($to_notify[$owner]) && $msg_type != MSG_ALARM)
{
$to_notify[$owner] = 'owner'; // always include the event-owner
}
$version = $GLOBALS['egw_info']['apps']['calendar']['version'];
// ignore events in the past (give a tolerance of 10 seconds for the script)
if($old_event != False && $this->date2ts($old_event['start']) < ($this->now_su - 10))
{
return False;
}
$temp_user = $GLOBALS['egw_info']['user']; // save user-date of the enviroment to restore it after
if (!$user)
{
$user = $temp_user['account_id'];
}
if ($GLOBALS['egw']->preferences->account_id != $user)
{
$GLOBALS['egw']->preferences->__construct($user);
$GLOBALS['egw_info']['user']['preferences'] = $GLOBALS['egw']->preferences->read_repository();
}
$senderid = $GLOBALS['egw_info']['user']['account_id'];
$event = $msg_type == MSG_ADDED || $msg_type == MSG_MODIFIED ? $new_event : $old_event;
switch($msg_type)
{
case MSG_DELETED:
$action = lang('Canceled');
$msg = 'Canceled';
$msgtype = '"calendar";';
$method = 'CANCEL';
break;
case MSG_MODIFIED:
$action = lang('Modified');
$msg = 'Modified';
$msgtype = '"calendar"; Version="'.$version.'"; Id="'.$new_event['id'].'"';
$method = 'REQUEST';
break;
case MSG_DISINVITE:
$action = lang('Disinvited');
$msg = 'Disinvited';
$msgtype = '"calendar";';
$method = 'CANCEL';
break;
case MSG_ADDED:
$action = lang('Added');
$msg = 'Added';
$msgtype = '"calendar"; Version="'.$version.'"; Id="'.$new_event['id'].'"';
$method = 'REQUEST';
break;
case MSG_REJECTED:
$action = lang('Rejected');
$msg = 'Response';
$msgtype = '"calendar";';
$method = 'REPLY';
break;
case MSG_TENTATIVE:
$action = lang('Tentative');
$msg = 'Response';
$msgtype = '"calendar";';
$method = 'REPLY';
break;
case MSG_ACCEPTED:
$action = lang('Accepted');
$msg = 'Response';
$msgtype = '"calendar";';
$method = 'REPLY';
break;
case MSG_ALARM:
$action = lang('Alarm');
$msg = 'Alarm';
$msgtype = '"calendar";';
$method = 'PUBLISH'; // duno if thats right
break;
default:
$method = 'PUBLISH';
}
$notify_msg = $this->cal_prefs['notify'.$msg];
if (empty($notify_msg))
{
$notify_msg = $this->cal_prefs['notifyAdded']; // use a default
}
$details = $this->_get_event_details($event,$action,$event_arr,$disinvited);
// add all group-members to the notification, unless they are already participants
foreach($to_notify as $userid => $statusid)
{
if (is_numeric($userid) && $GLOBALS['egw']->accounts->get_type($userid) == 'g' &&
($members = $GLOBALS['egw']->accounts->member($userid)))
{
foreach($members as $member)
{
$member = $member['account_id'];
if (!isset($to_notify[$member]))
{
$to_notify[$member] = 'G'; // Group-invitation
}
}
}
}
foreach($to_notify as $userid => $statusid)
{
if ($this->debug > 0) error_log(__METHOD__." trying to notify $userid, with $statusid");
if (!is_numeric($userid))
{
$res_info = $this->resource_info($userid);
$userid = $res_info['responsible'];
if (!isset($userid)) continue;
}
if ($statusid == 'R' || $GLOBALS['egw']->accounts->get_type($userid) == 'g')
{
continue; // dont notify rejected participants or groups
}
if($userid != $GLOBALS['egw_info']['user']['account_id'] || $msg_type == MSG_ALARM)
{
$preferences = CreateObject('phpgwapi.preferences',$userid);
$part_prefs = $preferences->read_repository();
if (!$this->update_requested($userid,$part_prefs,$msg_type,$old_event,$new_event))
{
continue;
}
$GLOBALS['egw']->accounts->get_account_name($userid,$lid,$details['to-firstname'],$details['to-lastname']);
$details['to-fullname'] = $GLOBALS['egw']->common->display_fullname('',$details['to-firstname'],$details['to-lastname']);
$GLOBALS['egw_info']['user']['preferences']['common']['tz_offset'] = $part_prefs['common']['tz_offset'];
$GLOBALS['egw_info']['user']['preferences']['common']['timeformat'] = $part_prefs['common']['timeformat'];
$GLOBALS['egw_info']['user']['preferences']['common']['dateformat'] = $part_prefs['common']['dateformat'];
$GLOBALS['egw']->datetime->tz_offset = 3600 * (int) $GLOBALS['egw_info']['user']['preferences']['common']['tz_offset'];
// event is in user-time of current user, now we need to calculate the tz-difference to the notified user and take it into account
$tz_diff = $GLOBALS['egw_info']['user']['preferences']['common']['tz_offset'] - $this->common_prefs['tz_offset'];
if($old_event != False) $details['olddate'] = $this->format_date($old_event['start']+$tz_diff);
$details['startdate'] = $this->format_date($event['start']+$tz_diff);
$details['enddate'] = $this->format_date($event['end']+$tz_diff);
list($subject,$body) = explode("\n",$GLOBALS['egw']->preferences->parse_notify($notify_msg,$details),2);
switch($part_prefs['calendar']['update_format'])
{
case 'ical':
if ($method == 'REQUEST')
{
$ics = ExecMethod2('calendar.calendar_ical.exportVCal',$event['id'],'2.0',$method);
$attachment = array( 'string' => $ics,
'filename' => 'cal.ics',
'encoding' => '8bit',
'type' => 'text/calendar; method='.$method,
);
}
// fall through
case 'extended':
$body .= "\n\n".lang('Event Details follow').":\n";
foreach($event_arr as $key => $val)
{
if(strlen($details[$key])) {
switch($key){
case 'access':
case 'priority':
case 'link':
break;
default:
$body .= sprintf("%-20s %s\n",$val['field'].':',$details[$key]);
break;
}
}
}
break;
}
// send via notification_app
if($GLOBALS['egw_info']['apps']['notifications']['enabled']) {
try {
$notification = new notifications();
$notification->set_receivers(array($userid));
$notification->set_message($body);
$notification->set_sender($senderid);
$notification->set_subject($subject);
$notification->set_links(array($details['link_arr']));
if(is_array($attachment)) { $notification->set_attachments(array($attachment)); }
$notification->send();
}
catch (Exception $exception) {
error_log(__METHOD__.' error while notifying user '.$userid.':'.$exception->getMessage());
continue;
}
} else {
error_log(__METHOD__.' cannot send any notifications because notifications is not installed');
}
}
}
// restore the enviroment (preferences->read_repository() sets the timezone!)
$GLOBALS['egw_info']['user'] = $temp_user;
if ($GLOBALS['egw']->preferences->account_id != $temp_user['account_id'] || isset($preferences))
{
$GLOBALS['egw']->preferences->__construct($temp_user['account_id']);
$GLOBALS['egw_info']['user']['preferences'] = $GLOBALS['egw']->preferences->read_repository();
//echo "<p>".__METHOD__."() restored enviroment of #$temp_user[account_id] $temp_user[account_fullname]: tz={$GLOBALS['egw_info']['user']['preferences']['common']['tz']}</p>\n";
}
return true;
}
function get_update_message($event,$added)
{
$details = $this->_get_event_details($event,$added ? lang('Added') : lang('Modified'),$nul);
$notify_msg = $this->cal_prefs[$added || empty($this->cal_prefs['notifyModified']) ? 'notifyAdded' : 'notifyModified'];
return explode("\n",$GLOBALS['egw']->preferences->parse_notify($notify_msg,$details),2);
}
/**
* Function called via async service, when an alarm is to be send
*
* @param array $alarm array with keys owner, cal_id, all
* @return boolean
*/
function send_alarm($alarm)
{
//echo "<p>bocalendar::send_alarm("; print_r($alarm); echo ")</p>\n";
$GLOBALS['egw_info']['user']['account_id'] = $this->owner = $alarm['owner'];
$event_time_user = egw_time::server2user($alarm['time'] + $alarm['offset']); // alarm[time] is in server-time, read requires user-time
if (!$alarm['owner'] || !$alarm['cal_id'] || !($event = $this->read($alarm['cal_id'],$event_time_user)))
{
return False; // event not found
}
if ($alarm['all'])
{
$to_notify = $event['participants'];
}
elseif ($this->check_perms(EGW_ACL_READ,$event)) // checks agains $this->owner set to $alarm[owner]
{
$to_notify[$alarm['owner']] = 'A';
}
else
{
return False; // no rights
}
$ret = $this->send_update(MSG_ALARM,$to_notify,$event,False,$alarm['owner']);
// create a new alarm for recuring events for the next event, if one exists
if ($event['recur_type'] && ($event = $this->read($alarm['cal_id'],$event_time_user+1)))
{
$alarm['time'] = $this->date2ts($event['start']) - $alarm['offset'];
$this->save_alarm($alarm['cal_id'],$alarm);
}
return $ret;
}
/**
* saves an event to the database, does NOT do any notifications, see calendar_boupdate::update for that
*
* This methode converts from user to server time and handles the insertion of users and dates of repeating events
*
* @param array $event
* @param boolean $ignore_acl=false should we ignore the acl
* @param boolean $updateTS=true update the content history of the event
* @return int|boolean $cal_id > 0 or false on error (eg. permission denied)
*/
function save($event,$ignore_acl=false,$updateTS=true)
{
//echo '<p>'.__METHOD__.'('.array2string($event).",$ignore_acl)</p>\n";
//error_log(__METHOD__.'('.array2string($event).",$etag)");
// check if user has the permission to update / create the event
if (!$ignore_acl && ($event['id'] && !$this->check_perms(EGW_ACL_EDIT,$event['id']) ||
!$event['id'] && !$this->check_perms(EGW_ACL_EDIT,0,$event['owner']) &&
!$this->check_perms(EGW_ACL_ADD,0,$event['owner'])))
{
return false;
}
// invalidate the read-cache if it contains the event we store now
if ($event['id'] && $event['id'] == self::$cached_event['id']) self::$cached_event = array();
$save_event = $event;
// we run all dates through date2ts, to adjust to server-time and the possible date-formats
foreach(array('start','end','modified','created','recur_enddate','recurrence') as $ts)
{
// we convert here from user-time to timestamps in server-time!
if (isset($event[$ts])) $event[$ts] = $event[$ts] ? $this->date2ts($event[$ts],true) : 0;
}
// convert tzid name to integer tz_id, of set user default
if (empty($event['tzid']) || !($event['tz_id'] = calendar_timezones::tz2id($event['tzid'])))
{
$event['tz_id'] = calendar_timezones::tz2id($event['tzid'] = egw_time::$user_timezone->getName());
}
// same with the recur exceptions
if (isset($event['recur_exception']) && is_array($event['recur_exception']))
{
foreach($event['recur_exception'] as $n => $date)
{
$event['recur_exception'][$n] = $this->date2ts($date,true);
}
}
// same with the alarms
if (isset($event['alarm']) && is_array($event['alarm']))
{
foreach($event['alarm'] as $id => $alarm)
{
$event['alarm'][$id]['time'] = $this->date2ts($alarm['time'],true);
}
}
$set_recurrences = false;
$set_recurrences_start = 0;
if (($cal_id = $this->so->save($event,$set_recurrences,$set_recurrences_start,0,$event['etag'])) && $set_recurrences && $event['recur_type'] != MCAL_RECUR_NONE)
{
$save_event['id'] = $cal_id;
// unset participants to enforce the default stati for all added recurrences
unset($save_event['participants']);
$this->set_recurrences($save_event, $set_recurrences_start);
}
if ($updateTS) $GLOBALS['egw']->contenthistory->updateTimeStamp('calendar',$cal_id,$event['id'] ? 'modify' : 'add',time());
return $cal_id;
}
/**
* Check if the current user has the necessary ACL rights to change the status of $uid
*
* For contacts we use edit rights of the owner of the event (aka. edit rights of the event).
*
* @param int|string $uid account_id or 1-char type-identifer plus id (eg. c15 for addressbook entry #15)
* @param array|int $event event array or id of the event
* @return boolean
*/
function check_status_perms($uid,$event)
{
if ($uid[0] == 'c' || $uid[0] == 'e') // for contact we use the owner of the event
{
if (!is_array($event) && !($event = $this->read($event))) return false;
return $this->check_perms(EGW_ACL_EDIT,0,$event['owner']);
}
// check if we have a category acl for the event or not (null)
$access = $this->check_cat_acl(self::CAT_ACL_STATUS,$event);
if (!is_null($access))
{
return $access;
}
// no access or denied access because of category acl --> regular check
if (!is_numeric($uid)) // this is eg. for resources (r123)
{
$resource = $this->resource_info($uid);
return EGW_ACL_EDIT & $resource['rights'];
}
// regular user and groups
return $this->check_perms(EGW_ACL_EDIT,0,$uid);
}
/**
* Check if current user has a certain right on the categories of an event
*
* Not having the given right for a single category, means not having it!
*
* @param int $right self::CAT_ACL_{ADD|STATUS}
* @param int|array $event
* @return boolean true if use has the right, false if not
* @return boolean false=access denied because of cat acl, true access granted because of cat acl,
* null = cat has no acl
*/
function check_cat_acl($right,$event)
{
if (!is_array($event)) $event = $this->read($event);
$ret = null;
if ($event['category'])
{
foreach(is_array($event['category']) ? $event['category'] : explode(',',$event['category']) as $cat_id)
{
$access = self::has_cat_right($right,$cat_id,$this->user);
if ($access === true)
{
$ret = true;
break;
}
if ($access === false)
{
$ret = false; // cat denies access --> check further cats
}
}
}
//echo "<p>".__METHOD__."($event[id]: $event[title], $right) = ".array2string($ret)."</p>\n";
return $ret;
}
/**
* Array with $cat_id => $rights pairs for current user (no entry means, cat is not limited by ACL!)
*
* @var array
*/
private static $cat_rights_cache;
/**
* Get rights for a given category id
*
* @param int $cat_id=null null to return array with all cats
* @return array with account_id => right pairs
*/
public static function get_cat_rights($cat_id=null)
{
if (!isset(self::$cat_rights_cache))
{
self::$cat_rights_cache = egw_cache::getSession('calendar','cat_rights',
array($GLOBALS['egw']->acl,'get_location_grants'),array('L%','calendar'));
}
//echo "<p>".__METHOD__."($cat_id) = ".array2string($cat_id ? self::$cat_rights_cache['L'.$cat_id] : self::$cat_rights_cache)."</p>\n";
return $cat_id ? self::$cat_rights_cache['L'.$cat_id] : self::$cat_rights_cache;
}
/**
* Set rights for a given single category and user
*
* @param int $cat_id
* @param int $user
* @param int $rights self::CAT_ACL_{ADD|STATUS} or'ed together
*/
public static function set_cat_rights($cat_id,$user,$rights)
{
//echo "<p>".__METHOD__."($cat_id,$user,$rights)</p>\n";
if (!isset(self::$cat_rights_cache)) self::get_cat_rights($cat_id);
if ((int)$rights != (int)self::$cat_rights_cache['L'.$cat_id][$user])
{
if ($rights)
{
self::$cat_rights_cache['L'.$cat_id][$user] = $rights;
$GLOBALS['egw']->acl->add_repository('calendar','L'.$cat_id,$user,$rights);
}
else
{
unset(self::$cat_rights_cache['L'.$cat_id][$user]);
if (!self::$cat_rights_cache['L'.$cat_id]) unset(self::$cat_rights_cache['L'.$cat_id]);
$GLOBALS['egw']->acl->delete_repository('calendar','L'.$cat_id,$user);
}
egw_cache::setSession('calendar','cat_rights',self::$cat_rights_cache);
}
}
/**
* Check if current user has a given right on a category (if it's restricted!)
*
* @param int $cat_id
* @return boolean false=access denied because of cat acl, true access granted because of cat acl,
* null = cat has no acl
*/
public static function has_cat_right($right,$cat_id,$user)
{
static $cache;
if (!isset($cache[$cat_id]))
{
$all = $own = 0;
$cat_rights = self::get_cat_rights($cat_id);
if (!is_null($cat_rights))
{
static $memberships;
if (is_null($memberships))
{
$memberships = $GLOBALS['egw']->accounts->memberships($user,true);
$memberships[] = $user;
}
foreach($cat_rights as $uid => $value)
{
$all |= $value;
if (in_array($uid,$memberships)) $own |= $value;
}
}
foreach(array(self::CAT_ACL_ADD,self::CAT_ACL_STATUS) as $mask)
{
$cache[$cat_id][$mask] = !($all & $mask) ? null : !!($own & $mask);
}
}
//echo "<p>".__METHOD__."($right,$cat_id) all=$all, own=$own returning ".array2string($cache[$cat_id][$right])."</p>\n";
return $cache[$cat_id][$right];
}
/**
* set the status of one participant for a given recurrence or for all recurrences since now (includes recur_date=0)
*
* @param int|array $event event-array or id of the event
* @param string|int $uid account_id or 1-char type-identifer plus id (eg. c15 for addressbook entry #15)
* @param int|char $status numeric status (defines) or 1-char code: 'R', 'U', 'T' or 'A'
* @param int $recur_date=0 date to change, or 0 = all since now
* @param boolean $ignore_acl=false do not check the permisions for the $uid, if true
* @param boolean $updateTS=true update the content history of the event
* @return int number of changed recurrences
*/
function set_status($event,$uid,$status,$recur_date=0,$ignore_acl=false,$updateTS=true)
{
$cal_id = is_array($event) ? $event['id'] : $event;
//echo "<p>calendar_boupdate::set_status($cal_id,$uid,$status,$recur_date)</p>\n";
if (!$cal_id || (!$ignore_acl && !$this->check_status_perms($uid,$event)))
{
return false;
}
calendar_so::split_status($status, $quantity, $role);
if (($Ok = $this->so->set_status($cal_id,is_numeric($uid)?'u':$uid[0],is_numeric($uid)?$uid:substr($uid,1),$status,$recur_date ? $this->date2ts($recur_date,true) : 0,$role)))
{
if ($updateTS) $GLOBALS['egw']->contenthistory->updateTimeStamp('calendar',$cal_id,'modify',time());
static $status2msg = array(
'R' => MSG_REJECTED,
'T' => MSG_TENTATIVE,
'A' => MSG_ACCEPTED,
);
if (isset($status2msg[$status]))
{
if (!is_array($event)) $event = $this->read($cal_id);
if (isset($recur_date)) $event = $this->read($event['id'],$recur_date); //re-read the actually edited recurring event
$this->send_update($status2msg[$status],$event['participants'],$event);
}
}
return $Ok;
}
/**
* deletes an event
*
* @param int $cal_id id of the event to delete
* @param int $recur_date=0 if a single event from a series should be deleted, its date
* @param boolean $ignore_acl=false true for no ACL check, default do ACL check
* @return boolean true on success, false on error (usually permission denied)
*/
function delete($cal_id,$recur_date=0,$ignore_acl=false)
{
$event = $this->read($cal_id,$recur_date);
if (!($event = $this->read($cal_id,$recur_date)) ||
!$ignore_acl && !$this->check_perms(EGW_ACL_DELETE,$event))
{
return false;
}
$this->send_update(MSG_DELETED,$event['participants'],$event);
if (!$recur_date || $event['recur_type'] == MCAL_RECUR_NONE)
{
$this->so->delete($cal_id);
$GLOBALS['egw']->contenthistory->updateTimeStamp('calendar',$cal_id,'delete',time());
// delete all links to the event
egw_link::unlink(0,'calendar',$cal_id);
}
else
{
$event['recur_exception'][] = $recur_date = $this->date2ts($event['start']);
unset($event['start']);
unset($event['end']);
$this->save($event); // updates the content-history
}
if ($event['reference'])
{
// evtl. delete recur_exception $event['recurrence'] from event with cal_id=$event['reference']
}
return true;
}
/**
* helper for send_update and get_update_message
* @internal
*/
function _get_event_details($event,$action,&$event_arr,$disinvited=array())
{
$details = array( // event-details for the notify-msg
'id' => $event['id'],
'action' => $action,
);
$event_arr = $this->event2array($event);
foreach($event_arr as $key => $val)
{
$details[$key] = $val['data'];
}
$details['participants'] = $details['participants'] ? implode("\n",$details['participants']) : '';
$event_arr['link']['field'] = lang('URL');
$eventStart_arr = $this->date2array($event['start']); // give this as 'date' to the link to pick the right recurrence for the participants state
$link = $GLOBALS['egw_info']['server']['webserver_url'].'/index.php?menuaction=calendar.calendar_uiforms.edit&cal_id='.$event['id'].'&date='.$eventStart_arr['full'].'&no_popup=1';
// if url is only a path, try guessing the rest ;-)
if ($link[0] == '/')
{
$link = ($GLOBALS['egw_info']['server']['enforce_ssl'] || $_SERVER['HTTPS'] ? 'https://' : 'http://').
($GLOBALS['egw_info']['server']['hostname'] ? $GLOBALS['egw_info']['server']['hostname'] : $_SERVER['HTTP_HOST']).
$link;
}
$event_arr['link']['data'] = $details['link'] = $link;
/* this is needed for notification-app
* notification-app creates the link individual for
* every user, so we must provide a neutral link-style
* if calendar implements tracking in near future, this part can be deleted
*/
$link_arr = array();
$link_arr['text'] = $event['title'];
$link_arr['view'] = array( 'menuaction' => 'calendar.calendar_uiforms.edit',
'cal_id' => $event['id'],
'date' => $eventStart_arr['full'],
);
$link_arr['popup'] = '750x400';
$details['link_arr'] = $link_arr;
$dis = array();
foreach($disinvited as $uid)
{
$dis[] = $this->participant_name($uid);
}
$details['disinvited'] = implode(', ',$dis);
return $details;
}
/**
* create array with name, translated name and readable content of each attributes of an event
*
* old function, so far only used by send_update (therefor it's in bocalupdate and not bocal)
*
* @param array $event event to use
* @returns array of attributes with fieldname as key and array with the 'field'=translated name 'data' = readable content (for participants this is an array !)
*/
function event2array($event)
{
$var['title'] = Array(
'field' => lang('Title'),
'data' => $event['title']
);
$var['description'] = Array(
'field' => lang('Description'),
'data' => $event['description']
);
foreach(explode(',',$event['category']) as $cat_id)
{
list($cat) = $GLOBALS['egw']->categories->return_single($cat_id);
$cat_string[] = stripslashes($cat['name']);
}
$var['category'] = Array(
'field' => lang('Category'),
'data' => implode(', ',$cat_string)
);
$var['location'] = Array(
'field' => lang('Location'),
'data' => $event['location']
);
$var['startdate'] = Array(
'field' => lang('Start Date/Time'),
'data' => $this->format_date($event['start']),
);
$var['enddate'] = Array(
'field' => lang('End Date/Time'),
'data' => $this->format_date($event['end']),
);
$pri = Array(
0 => '',
1 => lang('Low'),
2 => lang('Normal'),
3 => lang('High')
);
$var['priority'] = Array(
'field' => lang('Priority'),
'data' => $pri[$event['priority']]
);
$var['owner'] = Array(
'field' => lang('Owner'),
'data' => $GLOBALS['egw']->common->grab_owner_name($event['owner'])
);
$var['updated'] = Array(
'field' => lang('Updated'),
'data' => $this->format_date($event['modtime']).', '.$GLOBALS['egw']->common->grab_owner_name($event['modifier'])
);
$var['access'] = Array(
'field' => lang('Access'),
'data' => $event['public'] ? lang('Public') : lang('Private')
);
if (isset($event['participants']) && is_array($event['participants']))
{
$participants = $this->participants($event,true);
}
$var['participants'] = Array(
'field' => lang('Participants'),
'data' => $participants
);
// Repeated Events
if($event['recur_type'] != MCAL_RECUR_NONE)
{
$var['recur_type'] = Array(
'field' => lang('Repetition'),
'data' => $this->recure2string($event),
);
}
return $var;
}
/**
* log all updates to a file
*
* @param array $event2save event-data before calling save
* @param array $event_saved event-data read back from the DB
* @param array $old_event=null event-data in the DB before calling save
* @param string $type='update'
*/
function log2file($event2save,$event_saved,$old_event=null,$type='update')
{
if (!($f = fopen($this->log_file,'a')))
{
echo "<p>error opening '$this->log_file' !!!</p>\n";
return false;
}
fwrite($f,$type.': '.$GLOBALS['egw']->common->grab_owner_name($this->user).': '.date('r')."\n");
fwrite($f,"Time: time to save / saved time read back / old time before save\n");
foreach(array('start','end') as $name)
{
fwrite($f,$name.': '.(isset($event2save[$name]) ? $this->format_date($event2save[$name]) : 'not set').' / '.
$this->format_date($event_saved[$name]) .' / '.
(is_null($old_event) ? 'no old event' : $this->format_date($old_event[$name]))."\n");
}
foreach(array('event2save','event_saved','old_event') as $name)
{
fwrite($f,$name.' = '.print_r($$name,true));
}
fwrite($f,"\n");
fclose($f);
return true;
}
/**
* saves a new or updated alarm
*
* @param int $cal_id Id of the calendar-entry
* @param array $alarm array with fields: text, owner, enabled, ..
* @return string id of the alarm, or false on error (eg. no perms)
*/
function save_alarm($cal_id,$alarm)
{
if (!$cal_id || !$this->check_perms(EGW_ACL_EDIT,$alarm['all'] ? $cal_id : 0,!$alarm['all'] ? $alarm['owner'] : 0))
{
//echo "<p>no rights to save the alarm=".print_r($alarm,true)." to event($cal_id)</p>";
return false; // no rights to add the alarm
}
$alarm['time'] = $this->date2ts($alarm['time'],true); // user to server-time
$GLOBALS['egw']->contenthistory->updateTimeStamp('calendar',$cal_id, 'modify', time());
return $this->so->save_alarm($cal_id,$alarm, $this->now_su);
}
/**
* delete one alarms identified by its id
*
* @param string $id alarm-id is a string of 'cal:'.$cal_id.':'.$alarm_nr, it is used as the job-id too
* @return int number of alarms deleted, false on error (eg. no perms)
*/
function delete_alarm($id)
{
list(,$cal_id) = explode(':',$id);
if (!($alarm = $this->so->read_alarm($id)) || !$cal_id || !$this->check_perms(EGW_ACL_EDIT,$alarm['all'] ? $cal_id : 0,!$alarm['all'] ? $alarm['owner'] : 0))
{
return false; // no rights to delete the alarm
}
$GLOBALS['egw']->contenthistory->updateTimeStamp('calendar',$cal_id, 'modify', time());
return $this->so->delete_alarm($id, $this->now_su);
}
/**
* Find existing categories in database by name or add categories that do not exist yet
* currently used for ical/sif import
*
* @param array $catname_list names of the categories which should be found or added
* @param int $cal_id=-1 match against existing event and expand the returned category ids
* by the ones the user normally does not see due to category permissions - used to preserve categories
* @return array category ids (found, added and preserved categories)
*/
function find_or_add_categories($catname_list, $cal_id=-1)
{
if ($cal_id && $cal_id > 0)
{
// preserve categories without users read access
$old_event = $this->read($cal_id);
$old_categories = explode(',',$old_event['category']);
$old_cats_preserve = array();
if (is_array($old_categories) && count($old_categories) > 0)
{
foreach ($old_categories as $cat_id)
{
if (!$this->categories->check_perms(EGW_ACL_READ, $cat_id))
{
$old_cats_preserve[] = $cat_id;
}
}
}
}
$cat_id_list = array();
foreach ($catname_list as $cat_name)
{
$cat_name = trim($cat_name);
$cat_id = $this->categories->name2id($cat_name, 'X-');
if (!$cat_id)
{
// some SyncML clients (mostly phones) add an X- to the category names
if (strncmp($cat_name, 'X-', 2) == 0)
{
$cat_name = substr($cat_name, 2);
}
$cat_id = $this->categories->add(array('name' => $cat_name, 'descr' => $cat_name, 'access' => 'private'));
}
if ($cat_id)
{
$cat_id_list[] = $cat_id;
}
}
if (is_array($old_cats_preserve) && count($old_cats_preserve) > 0)
{
$cat_id_list = array_merge($cat_id_list, $old_cats_preserve);
}
if (count($cat_id_list) > 1)
{
$cat_id_list = array_unique($cat_id_list);
sort($cat_id_list, SORT_NUMERIC);
}
return $cat_id_list;
}
function get_categories($cat_id_list)
{
if (!is_array($cat_id_list))
{
$cat_id_list = explode(',',$cat_id_list);
}
$cat_list = array();
foreach ($cat_id_list as $cat_id)
{
if ($cat_id && $this->categories->check_perms(EGW_ACL_READ, $cat_id) &&
($cat_name = $this->categories->id2name($cat_id)) && $cat_name != '--')
{
$cat_list[] = $cat_name;
}
}
return $cat_list;
}
/**
* Try to find a matching db entry
*
* @param array $event the vCalendar data we try to find
* @param boolean $relax=false if asked to relax, we only match against some key fields
* @return the calendar_id of the matching entry or false (if none matches)
*/
function find_event($event, $relax=false)
{
$query = array();
if (isset($event['start']))
{
$query[] = 'cal_start='.$event['start'];
}
if (isset($event['end']))
{
$query[] = 'cal_end='.$event['end'];
}
foreach (array('title', 'location',
'public', 'non_blocking', 'category') as $key)
{
if (!empty($event[$key])) $query['cal_'.$key] = $event[$key];
}
if ($event['uid'] && ($uidmatch = $this->read($event['uid'])))
{
if ($event['recurrence'])
{
// Let's try to find a real exception first
$query['cal_uid'] = $event['uid'];
$query['cal_recurrence'] = $event['recurrence'];
if ($foundEvents = parent::search(array(
'query' => $query,
)))
{
if(is_array($foundEvents))
{
$event = array_shift($foundEvents);
return $event['id'];
}
}
// Let's try the "status only" (pseudo) exceptions now
if (($egw_event = $this->read($uidmatch['id'], $event['recurrence'])))
{
// Do we work with a pseudo exception here?
$match = true;
foreach (array('start', 'end', 'title', 'priority',
'location', 'public', 'non_blocking') as $key)
{
if (isset($event[$key])
&& $event[$key] != $egw_event[$key])
{
$match = false;
break;
}
}
if ($match && is_array($event['participants']))
{
foreach ($event['participants'] as $attendee => $status)
{
if (!isset($egw_event['participants'][$attendee])
|| $egw_event['participants'][$attendee] != $status)
{
$match = false;
break;
}
else
{
unset($egw_event['participants'][$attendee]);
}
}
if ($match && !empty($egw_event['participants'])) $match = false;
}
if ($match) return ($uidmatch['id'] . ':' . $event['recurrence']);
return false; // We need to create a new pseudo exception
}
}
else
{
return $uidmatch['id'];
}
}
if ($event['id'] && ($found = $this->read($event['id'])))
{
// We only do a simple consistency check
if ($found['title'] == $event['title']
&& $found['start'] == $event['start']
&& $found['end'] == $event['end'])
{
return $found['id'];
}
}
unset($event['id']);
if($foundEvents = parent::search(array(
'query' => $query,
)))
{
if(is_array($foundEvents))
{
$event = array_shift($foundEvents);
return $event['id'];
}
}
return false;
}
/**
* classifies an incoming event from the eGW point-of-view
*
* exceptions: unlike other calendar apps eGW does not create an event exception
* if just the participant state changes - therefore we have to distinguish between
* real exceptions and status only exceptions
*
* @param array $event the event to check
*
* @return array
* type =>
* SINGLE a single event
* SERIES-MASTER the series master
* SERIES-EXCEPTION event is a real exception
* SERIES-EXCEPTION-STATUS event is a status only exception
* SERIES-EXCEPTION-PROPAGATE event was a status only exception in the past and is now a real exception
* stored_event => if event already exists in the database array with event data or false
* master_event => for event type SERIES-EXCEPTION, SERIES-EXCEPTION-STATUS or SERIES-EXCEPTION-PROPAGATE
* the corresponding series master event array
* NOTE: this param is false if event is of type SERIES-MASTER
*/
function get_event_info($event)
{
$type = 'SINGLE'; // default
$return_master = false; //default
if ($event['recur_type'] != MCAL_RECUR_NONE)
{
$type = 'SERIES-MASTER';
}
else
{
// SINGLE, SERIES-EXCEPTION OR SERIES-EXCEPTON-STATUS
if (empty($event['uid']) && $event['id'] > 0 && ($stored_event = $this->read($event['id'])))
{
$event['uid'] = $stored_event['uid']; // restore the UID if it was not delivered
}
if (isset($event['uid'])
&& $event['recurrence']
&& ($master_event = $this->read($event['uid']))
&& isset($master_event['recur_type'])
&& $master_event['recur_type'] != MCAL_RECUR_NONE)
{
// SERIES-EXCEPTION OR SERIES-EXCEPTON-STATUS
$return_master = true; // we have a valid master and can return it
if (isset($event['id']) && $master_event['id'] != $event['id'])
{
$type = 'SERIES-EXCEPTION'; // this is an existing exception
}
else
{
$type = 'SERIES-EXCEPTION-STATUS'; // default if we cannot find a proof for a fundamental change
// the recurrence_event is the master event with start and end adjusted to the recurrence
$recurrence_event = $master_event;
$recurrence_event['start'] = $event['recurrence'];
$recurrence_event['end'] = $event['recurrence'] + ($master_event['end'] - $master_event['start']);
// check for changed data
foreach (array('start','end','uid','title','location',
'priority','public','special','non_blocking') as $key)
{
if (!empty($event[$key]) && $recurrence_event[$key] != $event[$key])
{
if (isset($event['id']))
{
$type = 'SERIES-EXCEPTION-PROPAGATE';
}
else
{
$type = 'SERIES-EXCEPTION'; // this is a new exception
}
break;
}
}
// the event id here is always the id of the master event
// unset it to prevent confusion of stored event and master event
unset($event['id']);
}
}
else
{
// SINGLE
$type = 'SINGLE';
}
}
// read existing event
if (isset($event['id']))
{
$stored_event = $this->read($event['id']);
}
// check ACL
if ($return_master)
{
$acl_edit = $this->check_perms(EGW_ACL_EDIT, $master_event['id']);
}
else
{
if (is_array($stored_event))
{
$acl_edit = $this->check_perms(EGW_ACL_EDIT, $stored_event['id']);
}
else
{
$acl_edit = true; // new event
}
}
return array(
'type' => $type,
'acl_edit' => $acl_edit,
'stored_event' => is_array($stored_event) ? $stored_event : false,
'master_event' => $return_master ? $master_event : false,
);
}
}
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