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class.bocalendar.inc.php

<?php
  /**************************************************************************\
  * eGroupWare - Calendar                                                    *
  * http://www.eGroupWare.org                                                *
  * Maintained and further developed by RalfBecker@outdoor-training.de       *
  * Based on Webcalendar by Craig Knudsen <cknudsen@radix.net>               *
  *          http://www.radix.net/~cknudsen                                  *
  * Originaly modified by Mark Peters <skeeter@phpgroupware.org>             *
  * --------------------------------------------                             *
  *  This program is free software; you can redistribute it and/or modify it *
  *  under the terms of the GNU General Public License as published by the   *
  *  Free Software Foundation; either version 2 of the License, or (at your  *
  *  option) any later version.                                              *
  \**************************************************************************/

      /* $Id: class.bocalendar.inc.php,v 1.118.2.20 2005/03/29 10:16:35 ralfbecker Exp $ */

00018       class bocalendar
      {
            var $public_functions = Array(
                  'read_entry'      => True,
                  'delete_entry'    => True,
                  'delete_calendar' => True,
                  'change_owner'    => True,
                  'update'          => True,
                  'check_set_default_prefs' => True,
                  'store_to_cache'  => True,
                  'export_event'    => True,
                  'send_alarm'      => True,
                  'reinstate'       => True
            );

            var $soap_functions = Array(
                  'read_entry' => Array(
                        'in' => Array(
                              'int'
                        ),
                        'out' => Array(
                              'SOAPStruct'
                        )
                  ),
                  'delete_entry' => Array(
                        'in' => Array(
                              'int'
                        ),
                        'out' => Array(
                              'int'
                        )
                  ),
                  'delete_calendar' => Array(
                        'in' => Array(
                              'int'
                        ),
                        'out' => Array(
                              'int'
                        )
                  ),
                  'change_owner' => Array(
                        'in' => Array(
                              'array'
                        ),
                        'out' => Array(
                              'int'
                        )
                  ),
                  'update' => Array(
                        'in' => Array(
                              'array',
                              'array',
                              'array',
                              'array',
                              'array'
                        ),
                        'out' => Array(
                              'array'
                        )
                  ),
                  'store_to_cache'  => Array(
                        'in' => Array(
                              'struct'
                        ),
                        'out' => Array(
                              'SOAPStruct'
                        )
                  ),
                  'store_to_cache'  => Array(
                        'in' => Array(
                              'array'
                        ),
                        'out' => Array(
                              'string'
                        )
                  ),
                  'categories' => array(
                        'in'  => array('bool'),
                        'out' => array('array')
                  ),
            );

            var $debug = False;
//          var $debug = True;

            var $so;
            var $cached_events;
            var $repeating_events;
            var $day;
            var $month;
            var $year;
            var $prefs;

            var $owner;
            var $grants;
            var $holiday_color;
            var $printer_friendly = False;

            var $cached_holidays;

            var $g_owner = 0;

            var $filter;
            var $cat_id;
            var $users_timeformat;

            var $modified;
            var $deleted;
            var $added;

            var $is_group = False;

            var $soap = False;

            var $use_session = False;

            var $today;
            var $debug_string;

            var $sortby;
            var $num_months;
            var $xmlrpc = False;    // not called via xmlrpc

            function bocalendar($session=0)
            {
                  $this->cat = CreateObject('phpgwapi.categories');
                  $this->grants = $GLOBALS['phpgw']->acl->get_grants('calendar');
                  @reset($this->grants);
                  if(DEBUG_APP)
                  {
                        if(floor(phpversion()) >= 4)
                        {
                              $this->debug_string = '';
                              ob_start();
                        }

                        foreach($this->grants as $grantor => $rights)
                        {
                              print_debug('Grantor',$grantor);
                              print_debug('Rights',$rights);
                        }
                  }

                  print_debug('Read use_session',$session);

                  if($session)
                  {
                        $this->read_sessiondata();
                        $this->use_session = True;
                  }
                  print_debug('BO Filter',$this->filter);
                  print_debug('Owner',$this->owner);

                  $this->prefs['calendar']    = $GLOBALS['phpgw_info']['user']['preferences']['calendar'];
                  $this->check_set_default_prefs();

                  $owner = get_var('owner',array('GET','POST'),$GLOBALS['owner']);

                  ereg('menuaction=([a-zA-Z.]+)',$_SERVER['HTTP_REFERER'],$regs);
                  $from = $regs[1];
                  if ((substr($_SERVER['PHP_SELF'],-8) == 'home.php' && substr($this->prefs['calendar']['defaultcalendar'],0,7) == 'planner'
                        || $_GET['menuaction'] == 'calendar.uicalendar.planner' &&
                        $from  != 'calendar.uicalendar.planner' && !$this->save_owner)
                        && (int)$this->prefs['calendar']['planner_start_with_group'] > 0)
                  {
                        // entering planner for the first time ==> saving owner in save_owner, setting owner to default
                        //
                        $this->save_owner = $this->owner;
                        $owner = 'g_'.$this->prefs['calendar']['planner_start_with_group'];
                  }
                  elseif ($_GET['menuaction'] != 'calendar.uicalendar.planner' &&
                        $this->save_owner)
                  {
                        // leaving planner with an unchanged user/owner ==> setting owner back to save_owner
                        //
                        $owner = (int)(isset($_GET['owner']) ? $_GET['owner'] : $this->save_owner);
                        unset($this->save_owner);
                  }
                  elseif (!empty($owner) && $owner != $this->owner && $from == 'calendar.uicalendar.planner')
                  {
                        // user/owner changed within planner ==> forgetting save_owner
                        //
                        unset($this->save_owner);
                  }

                  if(isset($owner) && substr($owner,0,2) == 'g_')
                  {
                        $this->set_owner_to_group((int) substr($owner,2));
                  }
                  elseif(isset($owner) && $owner)
                  {
                        $this->owner = (int) $owner;
                  }
                  if(!@isset($this->owner) || !@$this->owner)
                  {
                        $this->owner = (int) $GLOBALS['phpgw_info']['user']['account_id'];
                  }
                  elseif(isset($this->owner) && $GLOBALS['phpgw']->accounts->get_type($this->owner) == 'g')
                  {
                        $this->set_owner_to_group((int)$this->owner);
                  }

                  $this->prefs['common']    = $GLOBALS['phpgw_info']['user']['preferences']['common'];

                  if ($this->prefs['common']['timeformat'] == '12')
                  {
                        $this->users_timeformat = 'h:ia';
                  }
                  else
                  {
                        $this->users_timeformat = 'H:i';
                  }
                  $this->holiday_color = (substr($GLOBALS['phpgw_info']['theme']['bg07'],0,1)=='#'?'':'#').$GLOBALS['phpgw_info']['theme']['bg07'];

                  $friendly = (int) get_var('friendly',array('GET','POST'),0);

                  $this->printer_friendly = ((int)$friendly == 1?True:False);

                  if(isset($_POST['filter']) && ($_POST['filter'] == ' all ' || $_POST['filter'] == ' private '))
                  { 
                        $this->filter = $_POST['filter']; 
                  }
                  else
                  {
                        $this->filter = ' '.$this->prefs['calendar']['defaultfilter'].' ';
                  }
                  if(isset($_POST['sortby']) && ($_POST['sortby'] == 'user' || $_POST['sortby'] == 'category')) 
                  { 
                        $this->sortby = $_POST['sortby']; 
                  }
                  else
                  {
                        $this->sortby = $this->prefs['calendar']['defaultcalendar'] == 'planner_user' ? 'user' : 'category';
                  }
                  if(isset($_POST['cat_id'])) { $this->cat_id = (int) $_POST['cat_id']; }

                  if($GLOBALS['phpgw']->accounts->get_type($this->owner)=='g')
                  {
                        $this->filter = ' all ';
                  }

                  $this->so = CreateObject('calendar.socalendar',
                        Array(
                              'owner'           => $this->owner,
                              'filter'    => $this->filter,
                              'category'  => $this->cat_id,
                              'g_owner'   => $this->g_owner
                        )
                  );
                  $this->rpt_day = array( // need to be after creation of socalendar
                        MCAL_M_SUNDAY    => 'Sunday',
                        MCAL_M_MONDAY    => 'Monday',
                        MCAL_M_TUESDAY   => 'Tuesday',
                        MCAL_M_WEDNESDAY => 'Wednesday',
                        MCAL_M_THURSDAY  => 'Thursday',
                        MCAL_M_FRIDAY    => 'Friday',
                        MCAL_M_SATURDAY  => 'Saturday'
                  );
                  if($this->bo->prefs['calendar']['weekdaystarts'] != 'Sunday')
                  {
                        $mcals = array_keys($this->rpt_day);
                        $days  = array_values($this->rpt_day);
                        $this->rpt_day = array();
                        list($n) = $found = array_keys($days,$this->prefs['calendar']['weekdaystarts']);
                        for ($i = 0; $i < 7; ++$i,++$n)
                        {
                              $this->rpt_day[$mcals[$n % 7]] = $days[$n % 7];
                        }
                  }
                  $this->rpt_type = Array(
                        MCAL_RECUR_NONE         => 'None',
                        MCAL_RECUR_DAILY  => 'Daily',
                        MCAL_RECUR_WEEKLY => 'Weekly',
                        MCAL_RECUR_MONTHLY_WDAY => 'Monthly (by day)',
                        MCAL_RECUR_MONTHLY_MDAY => 'Monthly (by date)',
                        MCAL_RECUR_YEARLY => 'Yearly'
                  );

                  $localtime = $GLOBALS['phpgw']->datetime->users_localtime;

                  $this->num_months = (int) get_var('num_months',array('GET','POST'),1);
                  
                  $this->date = (int) get_var('date',array('GET','POST'));
                  if($this->date)
                  {
                        $this->year  = (int) substr($this->date,0,4);
                        $this->month = (int) substr($this->date,4,2);
                        $this->day   = (int) substr($this->date,6,2);
                  }
                  else
                  {
                        foreach(array('year' => 'Y','month' => 'm','day' => 'd') as $var => $pat)
                        {
                              $this->$var = (int) get_var($var,array('POST','GET'),date($pat,$localtime));
                        }
                        $this->date = sprintf('%04d%02d%02d',$this->year,$this->month,$this->day);
                  }
                  $this->today = date('Ymd',$GLOBALS['phpgw']->datetime->users_localtime);

                  if(DEBUG_APP)
                  {
                        print_debug('BO Filter','('.$this->filter.')');
                        print_debug('Owner',$this->owner);
                        print_debug('Today',$this->today);
                        if(floor(phpversion()) >= 4)
                        {
                              $this->debug_string .= ob_get_contents();
                              ob_end_clean();
                        }
                  }
                  $this->xmlrpc = is_object($GLOBALS['server']) && $GLOBALS['server']->last_method;
                  
                  if (!is_object($GLOBALS['phpgw']->bocalendar))
                  {
                        $GLOBALS['phpgw']->bocalendar =& $this;   // make the bocalendar object availible for the sidebox menu hook
                  }
            }

            function list_methods($_type='xmlrpc')
            {
                  /*
                    This handles introspection or discovery by the logged in client,
                    in which case the input might be an array.  The server always calls
                    this function to fill the server dispatch map using a string.
                  */
                  if (is_array($_type))
                  {
                        $_type = $_type['type'];
                  }
                  switch($_type)
                  {
                        case 'xmlrpc':
                              $xml_functions = array(
                                    'list_methods' => array(
                                          'function'  => 'list_methods',
                                          'signature' => array(array(xmlrpcStruct,xmlrpcString)),
                                          'docstring' => lang('Read this list of methods.')
                                    ),
                                    'read' => array(
                                          'function'  => 'read_entry',
                                          'signature' => array(array(xmlrpcStruct,xmlrpcInt)),
                                          'docstring' => lang('Read a single entry by passing the id and fieldlist.')
                                    ),
                                    'read_entry' => array(  // deprecated, use read
                                          'function'  => 'read_entry',
                                          'signature' => array(array(xmlrpcStruct,xmlrpcInt)),
                                          'docstring' => lang('Read a single entry by passing the id and fieldlist.')
                                    ),
                                    'write' => array(
                                          'function'  => 'update',
                                          'signature' => array(array(xmlrpcStruct,xmlrpcStruct)),
                                          'docstring' => lang('Add or update a single entry by passing the fields.')
                                    ),
                                    'add_entry' => array(   // deprecated, use write
                                          'function'  => 'update',
                                          'signature' => array(array(xmlrpcStruct,xmlrpcStruct)),
                                          'docstring' => lang('Add a single entry by passing the fields.')
                                    ),
                                    'update_entry' => array(      // deprecated, use write
                                          'function'  => 'update',
                                          'signature' => array(array(xmlrpcStruct,xmlrpcStruct)),
                                          'docstring' => lang('Update a single entry by passing the fields.')
                                    ),
                                    'delete' => array(
                                          'function'  => 'delete_entry',
                                          'signature' => array(array(xmlrpcInt,xmlrpcInt)),
                                          'docstring' => lang('Delete a single entry by passing the id.')
                                    ),
                                    'delete_entry' => array(      // deprecated, use delete
                                          'function'  => 'delete_entry',
                                          'signature' => array(array(xmlrpcInt,xmlrpcInt)),
                                          'docstring' => lang('Delete a single entry by passing the id.')
                                    ),
                                    'delete_calendar' => array(
                                          'function'  => 'delete_calendar',
                                          'signature' => array(array(xmlrpcInt,xmlrpcInt)),
                                          'docstring' => lang('Delete an entire users calendar.')
                                    ),
                                    'change_owner' => array(
                                          'function'  => 'change_owner',
                                          'signature' => array(array(xmlrpcInt,xmlrpcStruct)),
                                          'docstring' => lang('Change all events for $params[\'old_owner\'] to $params[\'new_owner\'].')
                                    ),
                                    'search' => array(
                                          'function'  => 'store_to_cache',
                                          'signature' => array(array(xmlrpcStruct,xmlrpcStruct)),
                                          'docstring' => lang('Read a list of entries.')
                                    ),
                                    'store_to_cache' => array(    // deprecated, use search
                                          'function'  => 'store_to_cache',
                                          'signature' => array(array(xmlrpcStruct,xmlrpcStruct)),
                                          'docstring' => lang('Read a list of entries.')
                                    ),
                                    'export_event' => array(
                                          'function'  => 'export_event',
                                          'signature' => array(array(xmlrpcString,xmlrpcStruct)),
                                          'docstring' => lang('Export a list of entries in iCal format.')
                                    ),
                                    'categories' => array(
                                          'function'  => 'categories',
                                          'signature' => array(array(xmlrpcStruct,xmlrpcStruct)),
                                          'docstring' => lang('List all categories.')
                                    ),
                              );
                              return $xml_functions;
                              break;
                        case 'soap':
                              return $this->soap_functions;
                              break;
                        default:
                              return array();
                              break;
                  }
            }

            function set_owner_to_group($owner)
            {
                  print_debug('calendar::bocalendar::set_owner_to_group:owner',$owner);
                  $this->owner = (int)$owner;
                  $this->is_group = True;
                  $this->g_owner = Array();
                  $members = $GLOBALS['phpgw']->accounts->member($owner);
                  if (is_array($members))
                  {
                        foreach($members as $user)
                        {
                              // use only members which gave the user a read-grant
                              if ($this->check_perms(PHPGW_ACL_READ,0,$user['account_id']))
                              {
                                    $this->g_owner[] = $user['account_id'];
                              }
                        }
                  }
                  //echo "<p>".function_backtrace().": set_owner_to_group($owner) = ".print_r($this->g_owner,True)."</p>\n";
            }

            function member_of_group($owner=0)
            {
                  $owner = ($owner==0?$GLOBALS['phpgw_info']['user']['account_id']:$owner);
                  $group_owners = $GLOBALS['phpgw']->accounts->membership();
                  while($group_owners && list($index,$group_info) = each($group_owners))
                  {
                        if($this->owner == $group_info['account_id'])
                        {
                              return True;
                        }
                  }
                  return False;
            }

            function save_sessiondata($data='')
            {
                  if ($this->use_session)
                  {
                        if (!is_array($data))
                        {
                              $data = array(
                                    'filter'     => $this->filter,
                                    'cat_id'     => $this->cat_id,
                                    'owner'      => $this->owner,
                                    'save_owner' => $this->save_owner,
                                    'year'       => $this->year,
                                    'month'      => $this->month,
                                    'day'        => $this->day,
                                    'date'       => $this->date,
                                    'sortby'     => $this->sortby,
                                    'num_months' => $this->num_months,
                                    'return_to'  => $this->return_to
                              );
                        }
                        if($this->debug)
                        {
                              if(floor(phpversion()) >= 4)
                              {
                                    ob_start();
                              }
                              echo '<!-- '."\n".'Save:'."\n"._debug_array($data,False)."\n".' -->'."\n";
                              if(floor(phpversion()) >= 4)
                              {
                                    $this->debug_string .= ob_get_contents();
                                    ob_end_clean();
                              }
                        }
                        $GLOBALS['phpgw']->session->appsession('session_data','calendar',$data);
                  }
            }

            function read_sessiondata()
            {
                  $data = $GLOBALS['phpgw']->session->appsession('session_data','calendar');
                  print_debug('Read',_debug_array($data,False));

                  $this->filter = $data['filter'];
                  $this->cat_id = $data['cat_id'];
                  $this->sortby = $data['sortby'];
                  $this->owner  = (int)$data['owner'];
                  $this->save_owner = (int)$data['save_owner'];
                  $this->year   = (int)$data['year'];
                  $this->month  = (int)$data['month'];
                  $this->day    = (int)$data['day'];
                  $this->num_months = (int)$data['num_months'];
                  $this->return_to = $data['return_to'];
            }

            function read_entry($id,$ignore_acl=False)
            {
                  if (is_array($id) && count($id) == 1)
                  {
                        list(,$id) = each($id);
                  }
                  if($ignore_acl || $this->check_perms(PHPGW_ACL_READ,$id))
                  {
                        $event = $this->so->read_entry($id);
            
                        if (isset($GLOBALS['phpgw_info']['apps']['infolog'])) // check if infolog is installed
                        {
                              $bolink = createObject('infolog.bolink');
                              $linkIDs = $bolink->get_links('calendar', $id);
                              if(is_array($linkIDs))
                              {
                                    foreach($linkIDs as $linkData)
                                    {
                                          //$event['projectID'] = 8;
                                          if($linkData['app'] == 'projects')
                                          {
                                                $event['projectID'] = $linkData['id'];
                                                continue;
                                          }
                                    }
                              }
                        }
                        if(!isset($event['participants'][$this->owner]) && $this->user_is_a_member($event,$this->owner))
                        {
                              $this->so->add_attribute('participants','U',(int)$this->owner);
                              $this->so->add_entry($event);
                              $event = $this->get_cached_event();
                        }
                        return $this->xmlrpc ? $this->xmlrpc_prepare($event) : $event;
                  }
                  if ($this->xmlrpc)
                  {
                        $GLOBALS['server']->xmlrpc_error($GLOBALS['xmlrpcerr']['no_access'],$GLOBALS['xmlrpcstr']['no_access']);
                  }
                  return False;
            }

            function delete_single($param)
            {
                  if($this->check_perms(PHPGW_ACL_DELETE,(int)$param['id']))
                  {
                        $temp_event = $this->get_cached_event();
                        $event = $this->read_entry((int)$param['id']);
//                      if($this->owner == $event['owner'])
//                      {
                        $exception_time = mktime($event['start']['hour'],$event['start']['min'],0,$param['month'],$param['day'],$param['year']) - $GLOBALS['phpgw']->datetime->tz_offset;
                        $event['recur_exception'][] = (int)$exception_time;
                        $this->so->cal->event = $event;
//                      print_debug('exception time',$event['recur_exception'][count($event['recur_exception']) -1]);
//                      print_debug('count event exceptions',count($event['recur_exception']));
                        $this->so->add_entry($event);
                        $cd = 16;

                        $this->so->cal->event = $temp_event;
                        unset($temp_event);
                  }
                  else
                  {
                        $cd = 60;
                  }
//                }
                  return $cd;
            }

            function delete_entry($id)
            {
                  if (is_array($id) && count($id) == 1)
                  {
                        list(,$id) = each($id);
                  }
                  if($this->check_perms(PHPGW_ACL_DELETE,$id))
                  {
                        $this->so->delete_entry($id);

                        if ($this->xmlrpc)
                        {
                              $this->so->expunge($id);
                        }
                        return $this->xmlrpc ? True : 16;
                  }
                  if ($this->xmlrpc)
                  {
                        $GLOBALS['server']->xmlrpc_error($GLOBALS['xmlrpcerr']['no_access'],$GLOBALS['xmlrpcstr']['no_access']);
                  }
                  return 60;
            }

            function reinstate($params='')
            {
                  if($this->check_perms(PHPGW_ACL_EDIT,$params['cal_id']) && isset($params['reinstate_index']))
                  {
                        $event = $this->so->read_entry($params['cal_id']);
                        @reset($params['reinstate_index']);
                        print_debug('Count of reinstate_index',count($params['reinstate_index']));
                        if(count($params['reinstate_index']) > 1)
                        {
                              while(list($key,$value) = each($params['reinstate_index']))
                              {
                                    print_debug('reinstate_index ['.$key.']',(int)$value);
                                    print_debug('exception time',$event['recur_exception'][(int)$value]);
                                    unset($event['recur_exception'][(int)$value]);
                                    print_debug('count event exceptions',count($event['recur_exception']));
                              }
                        }
                        else
                        {
                              print_debug('reinstate_index[0]',(int)$params['reinstate_index'][0]);
                              print_debug('exception time',$event['recur_exception'][(int)$params['reinstate_index'][0]]);
                              unset($event['recur_exception'][(int)$params['reinstate_index'][0]]);
                              print_debug('count event exceptions',count($event['recur_exception']));
                        }
                        $this->so->cal->event = $event;
                        $this->so->add_entry($event);
                        return 42;
                  }
                  else
                  {
                        return 43;
                  }
            }

            function delete_calendar($owner)
            {
                  if($GLOBALS['phpgw_info']['user']['apps']['admin'])
                  {
                        $this->so->delete_calendar($owner);
                  }
            }

            function change_owner($params='')
            {
                  if($GLOBALS['phpgw_info']['server']['calendar_type'] == 'sql')
                  {
                        if(is_array($params))
                        {
                              $this->so->change_owner($params['old_owner'],$params['new_owner']);
                        }
                  }
            }

            function expunge()
            {
                  reset($this->so->cal->deleted_events);
                  while(list($i,$event_id) = each($this->so->cal->deleted_events))
                  {
                        $event = $this->so->read_entry($event_id);
                        if($this->check_perms(PHPGW_ACL_DELETE,$event))
                        {
                              $this->send_update(MSG_DELETED,$event['participants'],$event);
                        }
                        else
                        {
                              unset($this->so->cal->deleted_events[$i]);
                        }
                  }
                  $this->so->expunge();
            }

            function search_keywords($keywords)
            {
                  $type = $GLOBALS['phpgw']->accounts->get_type($this->owner);

                  if($type == 'g')
                  {
                        $members = $GLOBALS['phpgw']->acl->get_ids_for_location($this->owner, 1, 'phpgw_group');
                  }
                  else
                  {
                        $members = array_keys($this->grants);

                        if (!in_array($this->owner,$members))
                        {
                              $members[] = $this->owner;
                        }
                  }
                  foreach($members as $n => $uid)
                  {
                        if (!($this->grants[$uid] & PHPGW_ACL_READ))
                        {
                              unset($members[$n]);
                        }
                  }
                  return $this->so->list_events_keyword($keywords,$members);
            }

            function update($params='')
            {
                  $l_cal = (@isset($params['cal']) && $params['cal']?$params['cal']:$_POST['cal']);
                  $l_participants = (@$params['participants']?$params['participants']:$_POST['participants']);
                  $l_categories = (@$params['categories']?$params['categories']:$_POST['categories']);
                  $l_start = (@isset($params['start']) && $params['start']?$params['start']:$_POST['start']);
                  $l_end = (@isset($params['end']) && $params['end']?$params['end']:$_POST['end']);
                  $l_recur_enddate = (@isset($params['recur_enddate']) && $params['recur_enddate']?$params['recur_enddate']:$_POST['recur_enddate']);

                  $send_to_ui = True;
                  //if ((!is_array($l_start) || !is_array($l_end)) && !isset($_GET['readsess']))      // xmlrpc call
                  if ($this->xmlrpc)      // xmlrpc call
                  {
                        $send_to_ui = False;

                        $l_cal = $params; // no extra array

                        foreach(array('start','end','recur_enddate') as $name)
                        {
                              $var = 'l_'.$name;
                              $$var = $GLOBALS['server']->iso86012date($params[$name]);
                              unset($l_cal[$name]);
                        }
                        if (!is_array($l_participants) || !count($l_participants))
                        {
                              $l_participants = array($GLOBALS['phpgw_info']['user']['account_id'] /*.'A'*/);
                        }
                        else
                        {
                              $l_participants = array();
                              foreach($params['participants'] as $user => $data)
                              {
                                    if (!is_numeric($user))
                                    {
                                          $user = $GLOBALS['phpgw']->accounts->name2id($user,'account_email');
                                    }
                                    $l_participants[] = $user /*.$data['status']*/;
                              }
                        }
                        unset($l_cal['participants']);

                        if (!is_object($GLOBALS['phpgw']->categories))
                        {
                              $GLOBALS['phpgw']->categories = CreateObject('phpgwapi.categories');
                        }
                        $l_categories = $GLOBALS['server']->xmlrpc2cats($params['category']);
                        unset($l_cal['category']);

                        // using access={public|private} in all modules via xmlrpc
                        $l_cal['public'] = $params['access'] != 'private';
                        unset($l_cal['access']);
/*
                        $fp = fopen('/tmp/xmlrpc.log','a+');
                        ob_start();
                        echo "\nbocalendar::update("; print_r($params); echo ")\n";
                        //echo "\nl_start="; print_r($l_start);
                        //echo "\nl_end="; print_r($l_end);
                        fwrite($fp,ob_get_contents());
                        ob_end_clean();
                        fclose($fp);
*/
                  }
                  print_debug('ID',$l_cal['id']);

                  // don't wrap to the next day for no time
                  if ($l_end['hour'] == 24 && $l_end['min'] == 0)
                  {
                        $l_end['hour'] = 23;
                        $l_end['min'] = 59;
                  }

                  if(isset($_GET['readsess']))
                  {
                        $event = $this->restore_from_appsession();
                        $event['title'] = stripslashes($event['title']);
                        $event['description'] = stripslashes($event['description']);
                        $datetime_check = $this->validate_update($event);
                        if($datetime_check)
                        {
                              ExecMethod('calendar.uicalendar.edit',
                                    Array(
                                          'cd'        => $datetime_check,
                                          'readsess'  => 1
                                    )
                              );
                              $GLOBALS['phpgw']->common->phpgw_exit(True);
                        }
                        $overlapping_events = False;
                  }
                  else
                  {
                        if((!$l_cal['id'] && !$this->check_perms(PHPGW_ACL_ADD)) ||
                           ($l_cal['id'] && !$this->check_perms(PHPGW_ACL_EDIT,$l_cal['id'])))
                        {
                              if ($this->xmlrpc)
                              {
                                    $GLOBALS['server']->xmlrpc_error($GLOBALS['xmlrpcerr']['no_access'],$GLOBALS['xmlrpcstr']['no_access']);
                              }
                              if (!$send_to_ui)
                              {
                                    return array(($l_cal['id']?1:2) => 'permission denied');
                              }
                              ExecMethod('calendar.uicalendar.index');
                              $GLOBALS['phpgw']->common->phpgw_exit();
                        }
                        // reading the old event-state, to preserver the participant status
                        $old_event = $l_cal['id'] ? $this->so->read_entry((int) $l_cal['id']) : False;

                        print_debug('Prior to fix_update_time()');
                        $this->fix_update_time($l_start);
                        $this->fix_update_time($l_end);

                        if(!isset($l_cal['private']))
                        {
                              $l_cal['private'] = 'public';
                        }

                        if(!isset($l_categories))
                        {
                              $l_categories = 0;
                        }

                        $is_public = (int)(isset($l_cal['public']) ? $l_cal['public'] : $l_cal['private'] == 'public');
                        $this->so->event_init();
                        $this->add_attribute('uid',$l_cal['uid']);
                        if(count($l_categories) >= 2)
                        {
                              $this->so->set_category(implode(',',$l_categories));
                        }
                        else
                        {
                              $this->so->set_category(strval($l_categories[0]));
                        }
                        foreach(array('title','description','location') as $name)
                        {
                              $l_cal[$name] = strip_tags($l_cal[$name]);
                        }
                        $this->so->set_title($l_cal['title']);
                        $this->so->set_description($l_cal['description']);
                        $this->so->set_start($l_start['year'],$l_start['month'],$l_start['mday'],$l_start['hour'],$l_start['min'],0);
                        $this->so->set_end($l_end['year'],$l_end['month'],$l_end['mday'],$l_end['hour'],$l_end['min'],0);
                        $this->so->set_class($is_public);
                        $this->so->add_attribute('reference',(@isset($l_cal['reference']) && $l_cal['reference']?$l_cal['reference']:0));
                        $this->so->add_attribute('location',(@isset($l_cal['location']) && $l_cal['location']?$l_cal['location']:''));
                        if($l_cal['id'])
                        {
                              $this->so->add_attribute('id',$l_cal['id']);
                        }

                        if( ($l_cal['rpt_use_end'] != 'y') && !$this->xmlrpc )
                        {
                              $l_recur_enddate['year'] = 0;
                              $l_recur_enddate['month'] = 0;
                              $l_recur_enddate['mday'] = 0;
                        }
                        elseif (isset($l_recur_enddate['str']))
                        {
                              $l_recur_enddate = $this->jscal->input2date($l_recur_enddate['str'],False,'mday');
                        }

                        switch((int)$l_cal['recur_type'])
                        {
                              case MCAL_RECUR_NONE:
                                    $this->so->set_recur_none();
                                    break;
                              case MCAL_RECUR_DAILY:
                                    $this->so->set_recur_daily((int)$l_recur_enddate['year'],(int)$l_recur_enddate['month'],(int)$l_recur_enddate['mday'],(int)$l_cal['recur_interval']);
                                    break;
                              case MCAL_RECUR_WEEKLY:
                                    foreach(array('rpt_sun','rpt_mon','rpt_tue','rpt_wed','rpt_thu','rpt_fri','rpt_sat') as $rpt_day)
                                    {
                                          $l_cal['recur_data'] += (int)$l_cal[$rpt_day];
                                    }
                                    if (is_array($l_cal['rpt_day']))
                                    {
                                          foreach ($l_cal['rpt_day'] as $mask)
                                          {
                                                $l_cal['recur_data'] |= (int)$mask;
                                          }
                                    }
                                    if (!$l_cal['recur_data'])    // no day set ==> use the day of the startdate
                                    {
                                          $l_cal['recur_data'] = array_search(date('l',$this->maketime($l_start)-$GLOBALS['phpgw']->datetime->tz_offset),$this->rpt_day);
                                    }
                                    $this->so->set_recur_weekly((int)$l_recur_enddate['year'],(int)$l_recur_enddate['month'],(int)$l_recur_enddate['mday'],(int)$l_cal['recur_interval'],$l_cal['recur_data']);
                                    break;
                              case MCAL_RECUR_MONTHLY_MDAY:
                                    $this->so->set_recur_monthly_mday((int)$l_recur_enddate['year'],(int)$l_recur_enddate['month'],(int)$l_recur_enddate['mday'],(int)$l_cal['recur_interval']);
                                    break;
                              case MCAL_RECUR_MONTHLY_WDAY:
                                    $this->so->set_recur_monthly_wday((int)$l_recur_enddate['year'],(int)$l_recur_enddate['month'],(int)$l_recur_enddate['mday'],(int)$l_cal['recur_interval']);
                                    break;
                              case MCAL_RECUR_YEARLY:
                                    $this->so->set_recur_yearly((int)$l_recur_enddate['year'],(int)$l_recur_enddate['month'],(int)$l_recur_enddate['mday'],(int)$l_cal['recur_interval']);
                                    break;
                        }
                        // restoring the recur-exceptions from the old event
                        if ($l_cal['recur_type'] != MCAL_RECUR_NONE && $old_event && count($old_event['recur_exception']))
                        {
                              $this->so->add_attribute('recur_exception',$old_event['recur_exception']);
                        }

                        if($l_participants)
                        {
                              $parts = $l_participants;
                              $minparts = min($l_participants);
                              $part = Array();
                              for($i=0;$i<count($parts);$i++)
                              {
                                    // fetching the accept-type from the old version of the event
                                    $accept_type = $old_event && isset($old_event['participants'][$parts[$i]]) ? $old_event['participants'][$parts[$i]] : 'U';

                                    $acct_type = $GLOBALS['phpgw']->accounts->get_type((int)$parts[$i]);
                                    if($acct_type == 'u')
                                    {
                                          $part[(int)$parts[$i]] = $accept_type;
                                    }
                                    elseif($acct_type == 'g')
                                    {
                                          $part[(int)$parts[$i]] = $accept_type;
                                          $groups[] = $parts[$i];
                                          /* This pulls ALL users of a group and makes them as participants to the event */
                                          /* I would like to turn this back into a group thing. */
                                          $acct = CreateObject('phpgwapi.accounts',(int)$parts[$i]);
                                          $members = $acct->member((int)$parts[$i]);
                                          unset($acct);
                                          if($members == False)
                                          {
                                                continue;
                                          }
                                          while($member = each($members))
                                          {
                                                $part[$member[1]['account_id']] = $accept_type;
                                          }
                                    }
                              }
                        }
                        else
                        {
                              $part = False;
                        }

                        if($part)
                        {
                              @reset($part);
                              while(list($key,$accept_type) = each($part))
                              {
                                    $this->so->add_attribute('participants',$accept_type,(int)$key);
                              }
                        }

                        if($groups)
                        {
                              @reset($groups);
                              $this->so->add_attribute('groups',(int)$group_id);
                        }

                        $event = $this->get_cached_event();
                        if(!is_int($minparts))
                        {
                              $minparts = $this->owner;
                        }
                        if(!@isset($event['participants'][$l_cal['owner']]))
                        {
                              $this->so->add_attribute('owner',$minparts);
                        }
                        else
                        {
                              $this->so->add_attribute('owner',$l_cal['owner']);
                        }
                        $this->so->add_attribute('priority',$l_cal['priority']);

                        foreach($l_cal as $name => $value)
                        {
                              if ($name[0] == '#')    // Custom field
                              {
                                    $this->so->add_attribute($name,stripslashes($value));
                              }
                        }
                        if (isset($_POST['preserved']) && is_array($preserved = unserialize(stripslashes($_POST['preserved']))))
                        {
                              foreach($preserved as $name => $value)
                              {
                                    switch($name)
                                    {
                                          case 'owner':
                                                $this->so->add_attribute('participants',$value,$l_cal['owner']);
                                                break;
                                          default:
                                                $this->so->add_attribute($name,str_replace(array('&amp;','&quot;','&lt;','&gt;'),array('&','"','<','>'),$value));
                                    }
                              }
                        }
                        $event = $this->get_cached_event();

                        if ($l_cal['alarmdays'] > 0 || $l_cal['alarmhours'] > 0 ||
                                    $l_cal['alarmminutes'] > 0)
                        {
                              $offset = ($l_cal['alarmdays'] * 24 * 3600) +
                                    ($l_cal['alarmhours'] * 3600) + ($l_cal['alarmminutes'] * 60);

                              $time = $this->maketime($event['start']) - $offset;

                              $event['alarm'][] = Array(
                                    'time'    => $time,
                                    'offset'  => $offset,
                                    'owner'   => $this->owner,
                                    'enabled' => 1
                              );
                        }

                        $this->store_to_appsession($event);
                        $datetime_check = $this->validate_update($event);
                        print_debug('bo->validated_update() returnval',$datetime_check);
                        if($datetime_check)
                        {
                              if (!$send_to_ui)
                              {
                                    return array($datetime_check => 'invalid input data');
                              }
                              ExecMethod('calendar.uicalendar.edit',
                                    Array(
                                          'cd'        => $datetime_check,
                                          'readsess'  => 1
                                    )
                              );
                              $GLOBALS['phpgw']->common->phpgw_exit(True);
                        }

                        if($event['id'])
                        {
                              $event_ids[] = $event['id'];
                        }
                        if($event['reference'])
                        {
                              $event_ids[] = $event['reference'];
                        }

                        $overlapping_events = $this->overlap(
                              $this->maketime($event['start']),
                              $this->maketime($event['end']),
                              $event['participants'],
                              $event['owner'],
                              $event_ids
                        );
                  }
                  if($overlapping_events)
                  {
                        if($send_to_ui)
                        {
                              unset($GLOBALS['phpgw_info']['flags']['noheader']);
                              unset($GLOBALS['phpgw_info']['flags']['nonavbar']);
                              ExecMethod('calendar.uicalendar.overlap',
                                    Array(
                                          'o_events'  => $overlapping_events,
                                          'this_event'      => $event
                                    )
                              );
                              $GLOBALS['phpgw']->common->phpgw_exit(True);
                        }
                        else
                        {
                              return $overlapping_events;
                        }
                  }
                  else
                  {
                        if(!$event['id'])
                        {
                              $this->so->add_entry($event);
                              $this->send_update(MSG_ADDED,$event['participants'],'',$this->get_cached_event());
                              print_debug('New Event ID',$event['id']);
                              
                              // set a new recur_exception
                              if ($event['reference'] && (int) $l_cal['new_exception'])
                              {
                                    $recur_event = $this->read_entry($event['reference']);
                                    $recur_event['recur_exception'][] = (int) $l_cal['new_exception'];
                                    $this->so->add_entry($recur_event);
                              }
                        }
                        else
                        {
                              print_debug('Updating Event ID',$event['id']);
                              $new_event = $event;
                              $old_event = $this->read_entry($event['id']);
                              // if old event has alarm and the start-time changed => update them
                              //echo "<p>checking ".count($old_event['alarm'])." alarms of event #$event[id] start moved from ".print_r($old_event['start'],True)." to ".print_r($event['start'],True)."</p>\n";
                              if ($old_event['alarm'] &&
                                    $this->maketime($old_event['start']) != $this->maketime($event['start']))
                              {
                                    $this->so->delete_alarms($old_event['id']);
                                    foreach($old_event['alarm'] as $id => $alarm)
                                    {
                                          $alarm['time'] = $this->maketime($event['start']) - $alarm['offset'];
                                          $event['alarm'][] = $alarm;
                                    }
                                    //echo "updated alarms<pre>".print_r($event['alarm'],True)."</pre>\n";
                              }
                              $this->so->cal->event = $event;
                              $this->so->add_entry($event);
                              $this->prepare_recipients($new_event,$old_event);
                        }

                        // check if infolog is availible
                        if(isset($GLOBALS['phpgw_info']['apps']['infolog']) && isset($l_cal['project']))
                        {
                              $bolink = createObject('infolog.bolink');
                              $bolink->unlink(0,'calendar',$event['id']);
                              if($l_cal['project'] != 'no_project')
                              {
                                    $bolink->link('calendar',$event['id'],'projects',$l_cal['project']);
                              }
                        }
                        
                        // just a hook
                        $singleHookValues = array
                        (
                              'location'  => 'updateevent',
                              'hookValues'      => $event
                        );
                        $GLOBALS['phpgw']->hooks->process($singleHookValues);
                        
                        if($send_to_ui)
                        {
                              $this->read_sessiondata();
                              if ($this->return_to)
                              {
                                    $GLOBALS['phpgw']->redirect_link('/index.php','menuaction='.$this->return_to);
                                    $GLOBALS['phpgw']->common->phpgw_exit();
                              }
                              Execmethod('calendar.uicalendar.index');
                        }
                        else
                        {
                              return (int)$event['id'];
                        }
                  }
                  return True;
            }

            /* Private functions */
            function read_holidays($year=0)
            {
                  if(!$year)
                  {
                        $year = $this->year;
                  }
                  $holiday = CreateObject('calendar.boholiday');
                  $holiday->prepare_read_holidays($year,$this->owner);
                  $this->cached_holidays = $holiday->read_holiday();
                  unset($holiday);
            }

            function user_is_a_member($event,$user)
            {
                  @reset($event['participants']);
                  $uim = False;
                  $security_equals = $GLOBALS['phpgw']->accounts->membership($user);
                  while(!$uim && $event['participants'] && $security_equals && list($participant,$status) = each($event['participants']))
                  {
                        if($GLOBALS['phpgw']->accounts->get_type($participant) == 'g')
                        {
                              @reset($security_equals);
                              while(list($key,$group_info) = each($security_equals))
                              {
                                    if($group_info['account_id'] == $participant)
                                    {
                                          return True;
                                          $uim = True;
                                    }
                              }
                        }
                  }
                  return $uim;
            }

            function maketime($time)
            {
                  return mktime($time['hour'],$time['min'],$time['sec'],$time['month'],$time['mday'],$time['year']);
            }

            /*!
            @function time2array
            @abstract returns a date-array suitable for the start- or endtime of an event from a timestamp
            @syntax time2array($time,$alarm=0)
            @param $time the timestamp for the values of the array
            @param $alarm (optional) alarm field of the array, defaults to 0
            @author ralfbecker
            */
01202             function time2array($time,$alarm = 0)
            {
                  return array(
                        'year'  => (int)(date('Y',$time)),
                        'month' => (int)(date('m',$time)),
                        'mday'  => (int)(date('d',$time)),
                        'hour'  => (int)(date('H',$time)),
                        'min'   => (int)(date('i',$time)),
                        'sec'   => (int)(date('s',$time)),
                        'raw'   => $time,
                        'alarm' => (int)($alarm)
                  );
            }

            /*!
            @function set_recur_date
            @abstract set the start- and enddates of a recuring event for a recur-date
            @syntax set_recur_date(&$event,$date)
            @param $event the event which fields to set (has to be the original event for start-/end-times)
            @param $date  the recuring date in form 'Ymd', eg. 20030226
            @author ralfbecker
            */
01224             function set_recur_date(&$event,$date)
            {
                  $org_start = $this->maketime($event['start']);
                  $org_end   = $this->maketime($event['end']);
                  $start = mktime($event['start']['hour'],$event['start']['min'],0,substr($date,4,2),substr($date,6,2),substr($date,0,4));
                  $end   = $org_end + $start - $org_start;
                  $event['start'] = $this->time2array($start);
                  $event['end']   = $this->time2array($end);
            }

            function fix_update_time(&$time_param)
            {
                  if (isset($time_param['str']))
                  {
                        if (!is_object($this->jscal))
                        {
                              $this->jscal = CreateObject('phpgwapi.jscalendar');
                        }
                        $time_param += $this->jscal->input2date($time_param['str'],False,'mday');
                        unset($time_param['str']);
                  }
                  if ($this->prefs['common']['timeformat'] == '12')
                  {
                        if ($time_param['ampm'] == 'pm')
                        {
                              if ($time_param['hour'] <> 12)
                              {
                                    $time_param['hour'] += 12;
                              }
                        }
                        elseif ($time_param['ampm'] == 'am')
                        {
                              if ($time_param['hour'] == 12)
                              {
                                    $time_param['hour'] -= 12;
                              }
                        }

                        if($time_param['hour'] > 24)
                        {
                              $time_param['hour'] -= 12;
                        }
                  }
            }

            function validate_update($event)
            {
                  $error = 0;
                  // do a little form verifying
                  if (!count($event['participants']))
                  {
                        $error = 43;
                  }
                  elseif ($event['title'] == '')
                  {
                        $error = 40;
                  }
                  elseif (($GLOBALS['phpgw']->datetime->time_valid($event['start']['hour'],$event['start']['min'],0) == False) || ($GLOBALS['phpgw']->datetime->time_valid($event['end']['hour'],$event['end']['min'],0) == False))
                  {
                        $error = 41;
                  }
                  elseif (($GLOBALS['phpgw']->datetime->date_valid($event['start']['year'],$event['start']['month'],$event['start']['mday']) == False) || ($GLOBALS['phpgw']->datetime->date_valid($event['end']['year'],$event['end']['month'],$event['end']['mday']) == False) || ($GLOBALS['phpgw']->datetime->date_compare($event['start']['year'],$event['start']['month'],$event['start']['mday'],$event['end']['year'],$event['end']['month'],$event['end']['mday']) == 1))
                  {
                        $error = 42;
                  }
                  elseif ($GLOBALS['phpgw']->datetime->date_compare($event['start']['year'],$event['start']['month'],$event['start']['mday'],$event['end']['year'],$event['end']['month'],$event['end']['mday']) == 0)
                  {
                        if ($GLOBALS['phpgw']->datetime->time_compare($event['start']['hour'],$event['start']['min'],0,$event['end']['hour'],$event['end']['min'],0) == 1)
                        {
                              $error = 42;
                        }
                  }
                  return $error;
            }

            /*!
            @function participants_not_rejected($participants,$event)
            @abstract checks if any of the $particpants participates in $event and has not rejected it
            */
01303             function participants_not_rejected($participants,$event)
            {
                  //echo "participants_not_rejected()<br>participants =<pre>"; print_r($participants); echo "</pre><br>event[participants]=<pre>"; print_r($event['participants']); echo "</pre>\n";
                  foreach($participants as $uid => $status)
                  {
                        //echo "testing event[participants][uid=$uid] = '".$event['participants'][$uid]."'<br>\n";
                        if (isset($event['participants'][$uid]) && $event['participants'][$uid] != 'R' &&
                              $status != 'R')
                        {
                              return True;      // found not rejected participant in event
                        }
                  }
                  return False;
            }
            
            /**
             * Checks if two timespans overlap, starting at the exact time where the other span ends is Ok
             *
             * @param int $start1 start 1. timespan
             * @param int $end1 end 1. timespan
             * @param int $start2 start 2. timespan
             * @param int $end2 end 2. timespan
             * @param int > 0 if there is an overlap, 0 otherwise
             */
01327             function overlaps($start1,$end1,$start2,$end2)
            {
                  //echo "bocalendar::overlaps($start1=".date('Y-m-d H:i:s',$start1).", $end1=".date('Y-m-d H:i:s',$end1).", $start2=".date('Y-m-d H:i:s',$start2).", $end2=".date('Y-m-d H:i:s',$end2).")<br>\n";
                  
                  if ($start1 <= $start2 && $end2 <= $end1) // 1 contains 2 complete
                  {
                        //echo "==> 1 contains 2 complete<br>\n";
                        return 1;
                  }
                  if ($start2 <= $start1 && $end1 <= $end2) // 2 contains 1 complete
                  {
                        //echo "==> 1 contains 2 complete<br>\n";
                        return 2;
                  }
                  if ($start1 < $start2 && $start2 < $end1) // start of 2 is in 1
                  {
                        //echo "==> start of 2 is in 1<br>\n";
                        return 3;
                  }
                  if ($start1 < $end2 && $end2 < $end1)                 // end of 2 is in 1
                  {
                        //echo "==> end of 2 is in 1<br>\n";
                        return 4;
                  }
                  return 0;
            }

            function overlap($starttime,$endtime,$participants,$owner=0,$ids=0,$restore_cache=False)
            {
                  $retval = False;

                  if($restore_cache)
                  {
                        $temp_cache_events = $this->cached_events;
                  }

                  $temp_start = (int)(date('Ymd',$starttime));
                  $temp_end = (int)(date('Ymd',$endtime));
                  if($this->debug)
                  {
                        echo '<!-- Temp_Start: '.$temp_start.' -->'."\n";
                        echo '<!-- Temp_End: '.$temp_end.' -->'."\n";
                  }

                  $users = Array();
                  if(count($participants))
                  {
                        foreach($participants as $user => $status)
                        {
                              $users[] = $user;
                        }
                  }
                  else
                  {
                        $users[] = $this->owner;
                  }

                  $possible_conflicts = $this->store_to_cache(
                        Array(
                              'smonth'    => substr(strval($temp_start),4,2),
                              'sday'      => substr(strval($temp_start),6,2),
                              'syear'     => substr(strval($temp_start),0,4),
                              'emonth'    => substr(strval($temp_end),4,2),
                              'eday'      => substr(strval($temp_end),6,2),
                              'eyear'     => substr(strval($temp_end),0,4),
                              'owner'     => $users
                        )
                  );

                  for($ts = $starttime; $ts <= $endtime; $ts += 24*60*60)
                  {
                        $check_ymd = (int) date('Ymd',$ts);
                        if (isset($possible_conflicts[$check_ymd]) && is_array($possible_conflicts[$check_ymd]) &&
                              count($possible_conflicts[$check_ymd]))
                        {
                              if($this->debug)
                              {
                                    echo '<!-- Found '.count($possible_conflicts[$check_ymd]).' possible conflicts for date '.$check_ymd.' -->'."\n";
                              }
                              foreach($possible_conflicts[$check_ymd] as $event)
                              {
                                    $found = False;
                                    if(is_array($ids))
                                    {
                                          foreach($ids as $event_id)
                                          {
                                                if($this->debug)
                                                {
                                                      echo '<!-- Checking '.$event['id'].' == '.$event_id.' -->'."\n";
                                                }
                                                if($event['id'] == $event_id)
                                                {
                                                      $found = True;    // conflict with original event, is no conflict
                                                      break;
                                                }
                                          }
                                    }
                                    if (!$found)
                                    {
                                          if($this->debug)
                                          {
                                                echo '<!-- conflict with a different event: '.($found?'No':'Yes').' -->'."<br>\n";
                                          }
                                          if($this->debug)
                                          {
                                                echo '<!-- Checking event id #'.$event['id'];
                                          }
                                          $event_start = $this->maketime($event['start']);
                                          $event_end   = $this->maketime($event['end']);
                                          if ($this->overlaps($starttime,$endtime,$event_start,$event_end) &&
                                                $this->participants_not_rejected($participants,$event))
                                          {
                                                if($this->debug)
                                                {
                                                      echo ' Conflicts';
                                                }
                                                if (!is_array($retval) || !in_array($event['id'],$retval)) $retval[] = $event['id'];
                                          }
                                          if($this->debug)
                                          {
                                                echo ' -->'."\n";
                                          }
                                    }                             
                              }
                        }
                  }
                  if($restore_cache)
                  {
                        $this->cached_events = $temp_cache_events;
                  }
                  return $retval;
            }

            /*!
            @function check_perms( )
            @syntax check_perms($needed,$event=0,$other=0)
            @abstract Checks if the current user has the necessary ACL rights
            @author ralfbecker
            @discussion The check is performed on an event or general on the cal of an other user
            @param $needed necessary ACL right: PHPGW_ACL_{READ|EDIT|DELETE}
            @param $event event as array or the event-id or 0 for general check
            @param $other uid to check (if event==0) or 0 to check against $this->owner
            @note Participating in an event is considered as haveing read-access AND private-access on that event, \
                  even if you have no general read- or private-grant from that user.
            */
01472             function check_perms($needed,$event=0,$other=0)
            {
                  $event_in = $event;
                  if (is_int($event) && $event == 0)
                  {
                        $owner = $other > 0 ? $other : $this->owner;
                  }
                  else
                  {
                        if (!is_array($event))
                        {
                              $event = $this->so->read_entry((int) $event);
                        }
                        if (!is_array($event))
                        {
                              if ($this->xmlrpc)
                              {
                                    $GLOBALS['server']->xmlrpc_error($GLOBALS['xmlrpcerr']['not_exist'],$GLOBALS['xmlrpcstr']['not_exist']);
                              }
                              return False;
                        }
                        $owner = $event['owner'];
                        $private = $event['public'] == False || $event['public'] == 0;
                  }
                  $user = $GLOBALS['phpgw_info']['user']['account_id'];
                  $grants = $this->grants[$owner];

                  if (is_array($event) && $needed == PHPGW_ACL_READ)
                  {
                        // Check if the $user is one of the participants or has a read-grant from one of them
                        // in that case he has an implicite READ grant for that event
                        //
                        if (isset($event['participants']) && is_array($event['participants']))
                        {
                              foreach($event['participants'] as $uid => $accept)
                              {
                                    if ($uid == $user) 
                                    {
                                          // if we are a participant, we have an implicite READ and PRIVAT grant
                                          $grants |= PHPGW_ACL_READ | PHPGW_ACL_PRIVATE;
                                          break;
                                    }
                                    elseif ($this->grants[$uid] & PHPGW_ACL_READ)
                                    {
                                          // if we have a READ grant from a participant, we dont give an implicit privat grant too
                                          $grants |= PHPGW_ACL_READ;
                                          // we cant break here, as we might be a participant too, and would miss the privat grant 
                                    }     
                              }
                        }
                  }

                  if ($GLOBALS['phpgw']->accounts->get_type($owner) == 'g' && $needed == PHPGW_ACL_ADD)
                  {
                        $access = False;  // a group can't be the owner of an event
                  }
                  else
                  {
                        $access = $user == $owner || $grants & $needed && (!$private || $grants & PHPGW_ACL_PRIVATE);
                  }
                  //echo "<p>".function_backtrace()." check_perms($needed,$event_id,$other) for user $user and needed_acl $needed: event='$event[title]': owner=$owner, private=$private, grants=$grants ==> access=$access</p>\n";

                  return $access;
            }


            function display_status($user_status)
            {
                  if(@$this->prefs['calendar']['display_status'] && $user_status)
                  {
                        $user_status = substr($this->get_long_status($user_status),0,1);

                        return ' ('.$user_status.')';
                  }
                  else
                  {
                        return '';
                  }
            }

            function get_long_status($status_short)
            {
                  switch ($status_short)
                  {
                        case 'A':
                              $status = lang('Accepted');
                              break;
                        case 'R':
                              $status = lang('Rejected');
                              break;
                        case 'T':
                              $status = lang('Tentative');
                              break;
                        case 'U':
                              $status = lang('No Response');
                              break;
                  }
                  return $status;
            }

            function is_private($event,$owner)
            {
                  if($owner == 0)
                  {
                        $owner = $this->owner;
                  }
                  if ($owner == $GLOBALS['phpgw_info']['user']['account_id'] || ($event['public']==1) || ($this->check_perms(PHPGW_ACL_PRIVATE,$event) && $event['public']==0) || $event['owner'] == $GLOBALS['phpgw_info']['user']['account_id'])
                  {
                        return False;
                  }
                  elseif($event['public'] == 0)
                  {
                        return True;
                  }
                  elseif($event['public'] == 2)
                  {
                        $is_private = True;
                        $groups = $GLOBALS['phpgw']->accounts->membership($owner);
                        while (list($key,$group) = each($groups))
                        {
                              if (strpos(' '.implode(',',$event['groups']).' ',$group['account_id']))
                              {
                                    return False;
                              }
                        }
                  }
                  else
                  {
                        return False;
                  }

                  return $is_private;
            }

            function get_short_field($event,$is_private=True,$field='')
            {
                  if($is_private)
                  {
                        return lang('private');
                  }

// cut off too long titles
                  elseif(strlen($event[$field]) > 19 && !$this->printer_friendly && $field=="title")
//                elseif(strlen($event[$field]) > 19 && $this->printer_friendly)
                  {
// we dont use currently 160304
//                      return substr($event[$field], 0 , 19) . '&nbsp;...';
                        return $event[$field];
                  }
                  else
                  {
                        return $event[$field];
                  }
            }

            function long_date($first,$last=0)
            {
                  if (!is_array($first))
                  {
                        $first = $this->time2array($raw = $first);
                        $first['raw'] = $raw;
                        $first['day'] = $first['mday'];
                  }
                  if ($last && !is_array($last))
                  {
                        $last = $this->time2array($raw = $last);
                        $last['raw'] = $raw;
                        $last['day'] = $last['mday'];
                  }
                  $datefmt = $this->prefs['common']['dateformat'];

                  $month_before_day = strtolower($datefmt[0]) == 'm' ||
                        strtolower($datefmt[2]) == 'm' && $datefmt[4] == 'd';

                  for ($i = 0; $i < 5; $i += 2)
                  {
                        switch($datefmt[$i])
                        {
                              case 'd':
                                    $range .= $first['day'] . ($datefmt[1] == '.' ? '.' : '');
                                    if ($first['month'] != $last['month'] || $first['year'] != $last['year'])
                                    {
                                          if (!$month_before_day)
                                          {
                                                $range .= ' '.lang(strftime('%B',$first['raw']));
                                          }
                                          if ($first['year'] != $last['year'] && $datefmt[0] != 'Y')
                                          {
                                                $range .= ($datefmt[0] != 'd' ? ', ' : ' ') . $first['year'];
                                          }
                                          if (!$last)
                                          {
                                                return $range;
                                          }
                                          $range .= ' - ';

                                          if ($first['year'] != $last['year'] && $datefmt[0] == 'Y')
                                          {
                                                $range .= $last['year'] . ', ';
                                          }

                                          if ($month_before_day)
                                          {
                                                $range .= lang(strftime('%B',$last['raw']));
                                          }
                                    }
                                    else
                                    {
                                          $range .= ' - ';
                                    }
                                    $range .= ' ' . $last['day'] . ($datefmt[1] == '.' ? '.' : '');
                                    break;
                              case 'm':
                              case 'M':
                                    $range .= ' '.lang(strftime('%B',$month_before_day ? $first['raw'] : $last['raw'])) . ' ';
                                    break;
                              case 'Y':
                                    $range .= ($datefmt[0] == 'm' ? ', ' : ' ') . ($datefmt[0] == 'Y' ? $first['year'].($datefmt[2] == 'd' ? ', ' : ' ') : $last['year'].' ');
                                    break;
                        }
                  }
                  return $range;
            }

            function get_week_label()
            {
                  $first = $GLOBALS['phpgw']->datetime->gmtdate($GLOBALS['phpgw']->datetime->get_weekday_start($this->year, $this->month, $this->day));
                  $last = $GLOBALS['phpgw']->datetime->gmtdate($first['raw'] + 518400);

                  return ($this->long_date($first,$last));
            }

            function normalizeminutes(&$minutes)
            {
                  $hour = 0;
                  $min = (int)$minutes;
                  if($min >= 60)
                  {
                        $hour += $min / 60;
                        $min %= 60;
                  }
                  settype($minutes,'integer');
                  $minutes = $min;
                  return $hour;
            }

            function splittime($time,$follow_24_rule=True)
            {
                  $temp = array('hour','minute','second','ampm');
                  $time = strrev($time);
                  $second = (int)(strrev(substr($time,0,2)));
                  $minute = (int)(strrev(substr($time,2,2)));
                  $hour   = (int)(strrev(substr($time,4)));
                  $hour += $this->normalizeminutes($minute);
                  $temp['second'] = $second;
                  $temp['minute'] = $minute;
                  $temp['hour']   = $hour;
                  $temp['ampm']   = '  ';
                  if($follow_24_rule == True)
                  {
                        if ($this->prefs['common']['timeformat'] == '24')
                        {
                              return $temp;
                        }

                        $temp['ampm'] = 'am';

                        if ((int)$temp['hour'] > 12)
                        {
                              $temp['hour'] = (int)((int)$temp['hour'] - 12);
                              $temp['ampm'] = 'pm';
                        }
                        elseif ((int)$temp['hour'] == 12)
                        {
                              $temp['ampm'] = 'pm';
                        }
                  }
                  return $temp;
            }

            function get_exception_array($exception_str='')
            {
                  $exception = Array();
                  if(strpos(' '.$exception_str,','))
                  {
                        $exceptions = explode(',',$exception_str);
                        for($exception_count=0;$exception_count<count($exceptions);$exception_count++)
                        {
                              $exception[] = (int)$exceptions[$exception_count];
                        }
                  }
                  elseif($exception_str != '')
                  {
                        $exception[] = (int)$exception_str;
                  }
                  return $exception;
            }

            function build_time_for_display($fixed_time)
            {
                  $time = $this->splittime($fixed_time);
                  $str = $time['hour'].':'.((int)$time['minute']<=9?'0':'').$time['minute'];

                  if ($this->prefs['common']['timeformat'] == '12')
                  {
                        $str .= ' ' . $time['ampm'];
                  }

                  return $str;
            }

            function sort_event($event,$date)
            {
                  $inserted = False;
                  if(isset($event['recur_exception']))
                  {
                        $event_time = mktime($event['start']['hour'],$event['start']['min'],0,(int)(substr($date,4,2)),(int)(substr($date,6,2)),(int)(substr($date,0,4))) - $GLOBALS['phpgw']->datetime->tz_offset;
                        while($inserted == False && list($key,$exception_time) = each($event['recur_exception']))
                        {
                              if($this->debug)
                              {
                                    echo '<!-- checking exception datetime '.$exception_time.' to event datetime '.$event_time.' -->'."\n";
                              }
                              if($exception_time == $event_time)
                              {
                                    $inserted = True;
                              }
                        }
                  }
                  if($this->cached_events[$date] && $inserted == False)
                  {

                        if($this->debug)
                        {
                              echo '<!-- Cached Events found for '.$date.' -->'."\n";
                        }
                        $year = substr($date,0,4);
                        $month = substr($date,4,2);
                        $day = substr($date,6,2);

                        if($this->debug)
                        {
                              echo '<!-- Date : '.$date.' Count : '.count($this->cached_events[$date]).' -->'."\n";
                        }

                        for($i=0;$i<count($this->cached_events[$date]);$i++)
                        {
                              if($this->cached_events[$date][$i]['id'] == $event['id'] || $this->cached_events[$date][$i]['reference'] == $event['id'])
                              {
                                    if($this->debug)
                                    {
                                          echo '<!-- Item already inserted! -->'."\n";
                                    }
                                    $inserted = True;
                                    break;
                              }
                              /* This puts all spanning events across multiple days up at the top. */
                              if($this->cached_events[$date][$i]['recur_type'] == MCAL_RECUR_NONE)
                              {
                                    if($this->cached_events[$date][$i]['start']['mday'] != $day && $this->cached_events[$date][$i]['end']['mday'] >= $day)
                                    {
                                          continue;
                                    }
                              }
                              if(date('Hi',mktime($event['start']['hour'],$event['start']['min'],$event['start']['sec'],$month,$day,$year)) < date('Hi',mktime($this->cached_events[$date][$i]['start']['hour'],$this->cached_events[$date][$i]['start']['min'],$this->cached_events[$date][$i]['start']['sec'],$month,$day,$year)))
                              {
                                    for($j=count($this->cached_events[$date]);$j>=$i;$j--)
                                    {
                                          $this->cached_events[$date][$j] = $this->cached_events[$date][$j-1];
                                    }
                                    if($this->debug)
                                    {
                                          echo '<!-- Adding event ID: '.$event['id'].' to cached_events -->'."\n";
                                    }
                                    $inserted = True;
                                    $this->cached_events[$date][$i] = $event;
                                    break;
                              }
                        }
                  }
                  if(!$inserted)
                  {
                        if($this->debug)
                        {
                              echo '<!-- Adding event ID: '.$event['id'].' to cached_events -->'."\n";
                        }
                        $this->cached_events[$date][] = $event;
                  }
            }

            function check_repeating_events($datetime)
            {
                  @reset($this->repeating_events);
                  $search_date_full = date('Ymd',$datetime);
                  $search_date_year = date('Y',$datetime);
                  $search_date_month = date('m',$datetime);
                  $search_date_day = date('d',$datetime);
                  $search_date_dow = date('w',$datetime);
                  $search_beg_day = mktime(0,0,0,$search_date_month,$search_date_day,$search_date_year,0);
                  if($this->debug)
                  {
                        echo '<!-- Search Date Full = '.$search_date_full.' -->'."\n";
                  }
                  $repeated = $this->repeating_events;
                  $r_events = count($repeated);
                  for ($i=0;$i<$r_events;$i++)
                  {
                        $rep_events = $this->repeating_events[$i];
                        $id = $rep_events['id'];
                        $event_beg_day = mktime(0,0,0,$rep_events['start']['month'],$rep_events['start']['mday'],$rep_events['start']['year'],0);
                        if($rep_events['recur_enddate']['month'] != 0 && $rep_events['recur_enddate']['mday'] != 0 && $rep_events['recur_enddate']['year'] != 0)
                        {
                              $event_recur_time = $this->maketime($rep_events['recur_enddate']);
                        }
                        else
                        {
                              $event_recur_time = mktime(0,0,0,1,1,2030);
                        }
                        $end_recur_date = date('Ymd',$event_recur_time);
                        $full_event_date = date('Ymd',$event_beg_day);

                        if($this->debug)
                        {
                              echo '<!-- check_repeating_events - Processing ID - '.$id.' -->'."\n";
                              echo '<!-- check_repeating_events - Recurring End Date - '.$end_recur_date.' -->'."\n";
                        }

                        // only repeat after the beginning, and if there is an rpt_end before the end date
                        if (($search_date_full > $end_recur_date) || ($search_date_full < $full_event_date))
                        {
                              continue;
                        }

                        if ($search_date_full == $full_event_date)
                        {
                              $this->sort_event($rep_events,$search_date_full);
                              continue;
                        }
                        else
                        {
                              $freq = $rep_events['recur_interval'];
                              $type = $rep_events['recur_type'];
                              switch($type)
                              {
                                    case MCAL_RECUR_DAILY:
                                          if($this->debug)
                                          {
                                                echo '<!-- check_repeating_events - MCAL_RECUR_DAILY - '.$id.' -->'."\n";
                                          }
                                          if ($freq == 1 && $rep_events['recur_enddate']['month'] != 0 && $rep_events['recur_enddate']['mday'] != 0 && $rep_events['recur_enddate']['year'] != 0 && $search_date_full <= $end_recur_date)
                                          {
                                                $this->sort_event($rep_events,$search_date_full);
                                          }
                                          elseif (floor(($search_beg_day - $event_beg_day)/86400) % $freq)
                                          {
                                                continue;
                                          }
                                          else
                                          {
                                                $this->sort_event($rep_events,$search_date_full);
                                          }
                                          break;
                                    case MCAL_RECUR_WEEKLY:
                                          if (floor(($search_beg_day - $event_beg_day)/604800) % $freq)
                                          {
                                                continue;
                                          }
                                          $check = 0;
                                          switch($search_date_dow)
                                          {
                                                case 0:
                                                      $check = MCAL_M_SUNDAY;
                                                      break;
                                                case 1:
                                                      $check = MCAL_M_MONDAY;
                                                      break;
                                                case 2:
                                                      $check = MCAL_M_TUESDAY;
                                                      break;
                                                case 3:
                                                      $check = MCAL_M_WEDNESDAY;
                                                      break;
                                                case 4:
                                                      $check = MCAL_M_THURSDAY;
                                                      break;
                                                case 5:
                                                      $check = MCAL_M_FRIDAY;
                                                      break;
                                                case 6:
                                                      $check = MCAL_M_SATURDAY;
                                                      break;
                                          }
                                          if ($rep_events['recur_data'] & $check)
                                          {
                                                $this->sort_event($rep_events,$search_date_full);
                                          }
                                          break;
                                    case MCAL_RECUR_MONTHLY_WDAY:
                                          if ((($search_date_year - $rep_events['start']['year']) * 12 + $search_date_month - $rep_events['start']['month']) % $freq)
                                          {
                                                continue;
                                          }

                                          if (($GLOBALS['phpgw']->datetime->day_of_week($rep_events['start']['year'],$rep_events['start']['month'],$rep_events['start']['mday']) == $GLOBALS['phpgw']->datetime->day_of_week($search_date_year,$search_date_month,$search_date_day)) &&
                                                (ceil($rep_events['start']['mday']/7) == ceil($search_date_day/7)))
                                          {
                                                $this->sort_event($rep_events,$search_date_full);
                                          }
                                          break;
                                    case MCAL_RECUR_MONTHLY_MDAY:
                                          if ((($search_date_year - $rep_events['start']['year']) * 12 + $search_date_month - $rep_events['start']['month']) % $freq)
                                          {
                                                continue;
                                          }
                                          if ($search_date_day == $rep_events['start']['mday'])
                                          {
                                                $this->sort_event($rep_events,$search_date_full);
                                          }
                                          break;
                                    case MCAL_RECUR_YEARLY:
                                          if (($search_date_year - $rep_events['start']['year']) % $freq)
                                          {
                                                continue;
                                          }
                                          if (date('dm',$datetime) == date('dm',$event_beg_day))
                                          {
                                                $this->sort_event($rep_events,$search_date_full);
                                          }
                                          break;
                              }
                        }
                  }     // end for loop
            }     // end function

            function store_to_cache($params)
            {
                  if(!is_array($params))
                  {
                        return False;
                  }
                  if (isset($params['start']) && ($datearr = $GLOBALS['server']->iso86012date($params['start'])))
                  {
                        $syear = $datearr['year'];
                        $smonth = $datearr['month'];
                        $sday = $datearr['mday'];
                        $this->xmlrpc = True;
                  }
                  else
                  {
                        $syear = $params['syear'];
                        $smonth = $params['smonth'];
                        $sday = $params['sday'];
                  }
                  if (isset($params['end']) && ($datearr = $GLOBALS['server']->iso86012date($params['end'])))
                  {
                        $eyear = $datearr['year'];
                        $emonth = $datearr['month'];
                        $eday = $datearr['mday'];
                        $this->xmlrpc = True;
                  }
                  else
                  {
                        $eyear = (isset($params['eyear'])?$params['eyear']:0);
                        $emonth = (isset($params['emonth'])?$params['emonth']:0);
                        $eday = (isset($params['eday'])?$params['eday']:0);
                  }
                  if (!isset($params['owner']) && @$this->xmlrpc)
                  {
                        $owner_id = $GLOBALS['phpgw_info']['user']['account_id'];
                  }
                  else
                  {
                        $owner_id = (isset($params['owner'])?$params['owner']:0);
                        if($owner_id==0 && $this->is_group)
                        {
                              unset($owner_id);
                              $owner_id = $this->g_owner;
                              if($this->debug)
                              {
                                    echo '<!-- owner_id in ('.implode(',',$owner_id).') -->'."\n";
                              }
                        }
                  }

                  if(!$eyear && !$emonth && !$eday)
                  {
                        $edate = mktime(23,59,59,$smonth + 1,$sday + 1,$syear);
                        $eyear = date('Y',$edate);
                        $emonth = date('m',$edate);
                        $eday = date('d',$edate);
                  }
                  else
                  {
                        if(!$eyear)
                        {
                              $eyear = $syear;
                        }
                        if(!$emonth)
                        {
                              $emonth = $smonth + 1;
                              if($emonth > 12)
                              {
                                    $emonth = 1;
                                    $eyear++;
                              }
                        }
                        if(!$eday)
                        {
                              $eday = $sday + 1;
                        }
                        $edate = mktime(23,59,59,$emonth,$eday,$eyear);
                  }
                  //echo "<p>bocalendar::store_to_cache(".print_r($params,True).") syear=$syear, smonth=$smonth, sday=$sday, eyear=$eyear, emonth=$emonth, eday=$eday, xmlrpc='$param[xmlrpc]'</p>\n";
                  if($this->debug)
                  {
                        echo '<!-- Start Date : '.sprintf("%04d%02d%02d",$syear,$smonth,$sday).' -->'."\n";
                        echo '<!-- End   Date : '.sprintf("%04d%02d%02d",$eyear,$emonth,$eday).' -->'."\n";
                  }

                  if($owner_id)
                  {
                        $cached_event_ids = $this->so->list_events($syear,$smonth,$sday,$eyear,$emonth,$eday,$owner_id);
                        $cached_event_ids_repeating = $this->so->list_repeated_events($syear,$smonth,$sday,$eyear,$emonth,$eday,$owner_id);
                  }
                  else
                  {
                        $cached_event_ids = $this->so->list_events($syear,$smonth,$sday,$eyear,$emonth,$eday);
                        $cached_event_ids_repeating = $this->so->list_repeated_events($syear,$smonth,$sday,$eyear,$emonth,$eday);
                  }

                  $c_cached_ids = count($cached_event_ids);
                  $c_cached_ids_repeating = count($cached_event_ids_repeating);

                  if($this->debug)
                  {
                        echo '<!-- events cached : '.$c_cached_ids.' : for : '.sprintf("%04d%02d%02d",$syear,$smonth,$sday).' -->'."\n";
                        echo '<!-- repeating events cached : '.$c_cached_ids_repeating.' : for : '.sprintf("%04d%02d%02d",$syear,$smonth,$sday).' -->'."\n";
                  }

                  $this->cached_events = Array();

                  if($c_cached_ids == 0 && $c_cached_ids_repeating == 0)
                  {
                        return;
                  }

                  $cache_start = (int)(sprintf("%04d%02d%02d",$syear,$smonth,$sday));
                  $cached_event=$this->get_cached_event();
                  if($c_cached_ids)
                  {
                        for($i=0;$i<$c_cached_ids;$i++)
                        {
                              $event = $this->so->read_entry($cached_event_ids[$i]);
                              if ($event['recur_type'])
                              {
                                    continue;   // fetch recuring events only in 2. loop
                              }
                              $startdate = (int)(date('Ymd',$this->maketime($event['start'])));
                              // maketime($event['end'][)-1 to allow events to end on a full hour/day without the need to enter it as minute=59
                              $enddate = (int)(date('Ymd',$this->maketime($event['end'])-1));
                              $this->cached_events[$startdate][] = $event;
                              if($startdate != $enddate)
                              {
                                    $start['year'] = (int)(substr($startdate,0,4));
                                    $start['month'] = (int)(substr($startdate,4,2));
                                    $start['mday'] = (int)(substr($startdate,6,2));
                                    for($j=$startdate,$k=0;$j<=$enddate;$k++,$j=(int)(date('Ymd',mktime(0,0,0,$start['month'],$start['mday'] + $k,$start['year']))))
                                    {
                                          $c_evt_day = count($this->cached_events[$j]) - 1;
                                          if($c_evt_day < 0)
                                          {
                                                $c_evt_day = 0;
                                          }
                                          if($this->debug)
                                          {
                                                echo '<!-- Date: '.$j.' Count : '.$c_evt_day.' -->'."\n";
                                          }
                                          if($this->cached_events[$j][$c_evt_day]['id'] != $event['id'])
                                          {
                                                if($this->debug)
                                                {
                                                      echo '<!-- Adding Event for Date: '.$j.' -->'."\n";
                                                }
                                                $this->cached_events[$j][] = $event;
                                          }
                                          if ($j >= $cache_start && (@$params['no_doubles'] || @$this->xmlrpc))
                                          {
                                                break;      // add event only once on it's startdate
                                          }
                                    }
                              }
                        }
                  }
                  
                  $this->repeating_events = Array();
                  if($c_cached_ids_repeating)
                  {
                        for($i=0;$i<$c_cached_ids_repeating;$i++)
                        {
                              $this->repeating_events[$i] = $this->so->read_entry($cached_event_ids_repeating[$i]);
                              if($this->debug)
                              {
                                    echo '<!-- Cached Events ID: '.$cached_event_ids_repeating[$i].' ('.sprintf("%04d%02d%02d",$this->repeating_events[$i]['start']['year'],$this->repeating_events[$i]['start']['month'],$this->repeating_events[$i]['start']['mday']).') -->'."\n";
                              }
                        }
                        for($date=mktime(0,0,0,$smonth,$sday,$syear);$date<=$edate;$date += 86400)
                        {
                              if($this->debug)
                              {
                                    $search_date = date('Ymd',$date);
                                    echo '<!-- Calling check_repeating_events('.$search_date.') -->'."\n";
                              }
                              $this->check_repeating_events($date);
                              if($this->debug)
                              {
                                    echo '<!-- Total events found matching '.$search_date.' = '.count($this->cached_events[$search_date]).' -->'."\n";
                                    for($i=0;$i<count($this->cached_events[$search_date]);$i++)
                                    {
                                          echo '<!-- Date: '.$search_date.' ['.$i.'] = '.$this->cached_events[$search_date][$i]['id'].' -->'."\n";
                                    }
                              }
                        }
                  }

                  $retval = Array();
                  for($j=date('Ymd',mktime(0,0,0,$smonth,$sday,$syear)),$k=0;$j<=date('Ymd',mktime(0,0,0,$emonth,$eday,$eyear));$k++,$j=date('Ymd',mktime(0,0,0,$smonth,$sday + $k,$syear)))
                  {
                        if(is_array($this->cached_events[$j]))
                        {
                              if ($this->xmlrpc)
                              {
                                    foreach($this->cached_events[$j] as $event)
                                    {
                                          $retval[] = $this->xmlrpc_prepare($event);
                                    }
                              }
                              else
                              {
                                    $retval[$j] = $this->cached_events[$j];
                              }
                        }
                  }
                  //echo "store_to_cache(".print_r($params,True).")=<pre>".print_r($retval,True)."</pre>\n";
                  $this->so->cal->event = $cached_event;
                  return $retval;
            }

            function xmlrpc_prepare(&$event)
            {
                  $event['rights'] = $this->grants[$event['owner']];

                  foreach(array('start','end','modtime','recur_enddate') as $name)
                  {
                        if (isset($event[$name]))
                        {
                              $event[$name] = $GLOBALS['server']->date2iso8601($event[$name]);
                        }
                  }
                  if (is_array($event['recur_exception']))
                  {
                        foreach($event['recur_exception'] as $key => $timestamp)
                        {
                              $event['recur_exception'][$key] = $GLOBALS['server']->date2iso8601($timestamp);
                        }
                  }
                  static $user_cache = array();

                  if (!is_object($GLOBALS['phpgw']->perferences))
                  {
                        $GLOBALS['phpgw']->perferences = CreateObject('phpgwapi.preferences');
                  }
                  foreach($event['participants'] as $user_id => $status)
                  {
                        if (!isset($user_cache[$user_id]))
                        {
                              $user_cache[$user_id] = array(
                                    'name'   => $GLOBALS['phpgw']->common->grab_owner_name($user_id),
                                    'email'  => $GLOBALS['phpgw']->accounts->id2name($user_id,'account_email')
                              );
                        }
                        $event['participants'][$user_id] = $user_cache[$user_id] + array(
                              'status' => $status,
                        );
                  }
                  if (is_array($event['alarm']))
                  {
                        foreach($event['alarm'] as $id => $alarm)
                        {
                              $event['alarm'][$id]['time'] = $GLOBALS['server']->date2iso8601($alarm['time']);
                              if ($alarm['owner'] != $GLOBALS['phpgw_info']['user']['account_id'])
                              {
                                    unset($event['alarm'][$id]);
                              }
                        }
                  }
                  $event['category'] = $GLOBALS['server']->cats2xmlrpc(explode(',',$event['category']));

                  // using access={public|privat} in all modules via xmlrpc
                  $event['access'] = $event['public'] ? 'public' : 'privat';
                  unset($event['public']);

                  return $event;
            }

            /* Begin Appsession Data */
            function store_to_appsession($event)
            {
                  $GLOBALS['phpgw']->session->appsession('entry','calendar',$event);
            }

            function restore_from_appsession()
            {
                  $this->event_init();
                  $event = $GLOBALS['phpgw']->session->appsession('entry','calendar');
                  $this->so->cal->event = $event;
                  return $event;
            }
            /* End Appsession Data */

            /* Begin of SO functions */
            function get_cached_event()
            {
                  return $this->so->get_cached_event();
            }

            function add_attribute($var,$value,$index='**(**')
            {
                  $this->so->add_attribute($var,$value,$index);
            }

            function event_init()
            {
                  $this->so->event_init();
            }

            function set_start($year,$month,$day=0,$hour=0,$min=0,$sec=0)
            {
                  $this->so->set_start($year,$month,$day,$hour,$min,$sec);
            }

            function set_end($year,$month,$day=0,$hour=0,$min=0,$sec=0)
            {
                  $this->so->set_end($year,$month,$day,$hour,$min,$sec);
            }

            function set_title($title='')
            {
                  $this->so->set_title($title);
            }

            function set_description($description='')
            {
                  $this->so->set_description($description);
            }

            function set_class($class)
            {
                  $this->so->set_class($class);
            }

            function set_category($category='')
            {
                  $this->so->set_category($category);
            }

            function set_alarm($alarm)
            {
                  $this->so->set_alarm($alarm);
            }

            function set_recur_none()
            {
                  $this->so->set_recur_none();
            }

            function set_recur_daily($year,$month,$day,$interval)
            {
                  $this->so->set_recur_daily($year,$month,$day,$interval);
            }

            function set_recur_weekly($year,$month,$day,$interval,$weekdays)
            {
                  $this->so->set_recur_weekly($year,$month,$day,$interval,$weekdays);
            }

            function set_recur_monthly_mday($year,$month,$day,$interval)
            {
                  $this->so->set_recur_monthly_mday($year,$month,$day,$interval);
            }

            function set_recur_monthly_wday($year,$month,$day,$interval)
            {
                  $this->so->set_recur_monthly_wday($year,$month,$day,$interval);
            }

            function set_recur_yearly($year,$month,$day,$interval)
            {
                  $this->so->set_recur_yearly($year,$month,$day,$interval);
            }
            /* End of SO functions */

            function prepare_matrix($interval,$increment,$part,$fulldate)
            {
                  for($h=0;$h<24;$h++)
                  {
                        for($m=0;$m<$interval;$m++)
                        {
                              $index = (($h * 10000) + (($m * $increment) * 100));
                              $time_slice[$index]['marker'] = '&nbsp';
                              $time_slice[$index]['description'] = '';
                        }
                  }
                  foreach($this->cached_events[$fulldate] as $event)
                  {
                        if ($event['participants'][$part] == 'R')
                        {
                              continue;   // dont show rejected invitations, as they are free time
                        }
                        $eventstart = $GLOBALS['phpgw']->datetime->localdates($this->maketime($event['start']) - $GLOBALS['phpgw']->datetime->tz_offset);
                        $eventend = $GLOBALS['phpgw']->datetime->localdates($this->maketime($event['end']) - $GLOBALS['phpgw']->datetime->tz_offset);
                        $start = ($eventstart['hour'] * 10000) + ($eventstart['minute'] * 100);
                        $starttemp = $this->splittime("$start",False);
                        $subminute = 0;
                        for($m=0;$m<$interval;$m++)
                        {
                              $minutes = $increment * $m;
                              if((int)$starttemp['minute'] > $minutes && (int)$starttemp['minute'] < ($minutes + $increment))
                              {
                                    $subminute = ($starttemp['minute'] - $minutes) * 100;
                              }
                        }
                        $start -= $subminute;
                        $end =  ($eventend['hour'] * 10000) + ($eventend['minute'] * 100);
                        $endtemp = $this->splittime("$end",False);
                        $addminute = 0;
                        for($m=0;$m<$interval;$m++)
                        {
                              $minutes = ($increment * $m);
                              if($endtemp['minute'] < ($minutes + $increment) && $endtemp['minute'] > $minutes)
                              {
                                    $addminute = ($minutes + $increment - $endtemp['minute']) * 100;
                              }
                        }
                        $end += $addminute;
                        $starttemp = $this->splittime("$start",False);
                        $endtemp = $this->splittime("$end",False);

                        for($h=$starttemp['hour'];$h<=$endtemp['hour'];$h++)
                        {
                              $startminute = 0;
                              $endminute = $interval;
                              $hour = $h * 10000;
                              if($h == (int)$starttemp['hour'])
                              {
                                    $startminute = ($starttemp['minute'] / $increment);
                              }
                              if($h == (int)$endtemp['hour'])
                              {
                                    $endminute = ($endtemp['minute'] / $increment);
                              }
                              $private = $this->is_private($event,$part);
                              $time_display = $GLOBALS['phpgw']->common->show_date($eventstart['raw'],$this->users_timeformat).'-'.$GLOBALS['phpgw']->common->show_date($eventend['raw'],$this->users_timeformat);
                              $time_description = '('.$time_display.') '.$this->get_short_field($event,$private,'title').$this->display_status($event['participants'][$part]);
                              for($m=$startminute;$m<$endminute;$m++)
                              {
                                    $index = ($hour + (($m * $increment) * 100));
                                    $time_slice[$index]['marker'] = '-';
                                    $time_slice[$index]['description'] = $time_description;
                                    $time_slice[$index]['id'] = $event['id'];
                              }
                        }
                  }
                  return $time_slice;
            }

            /*!
            @function set_status
            @abstract set the participant response $status for event $cal_id and notifies the owner of the event
            */
02451             function set_status($cal_id,$status)
            {
                  $status2msg = array(
                        REJECTED  => MSG_REJECTED,
                        TENTATIVE => MSG_TENTATIVE,
                        ACCEPTED  => MSG_ACCEPTED
                  );
                  if (!isset($status2msg[$status]))
                  {
                        return False;
                  }
                  $this->so->set_status($cal_id,$status);
                  $event = $this->so->read_entry($cal_id);
                  $this->send_update($status2msg[$status],$event['participants'],$event);

                  return True;
            }

            /*!
            @function update_requested
            @abstract checks if $userid has requested (in $part_prefs) updates for $msg_type
            @syntax update_requested($userid,$part_prefs,$msg_type,$old_event,$new_event)
            @param $userid numerical user-id
            @param $part_prefs preferces of the user $userid
            @param $msg_type type of the notification: MSG_ADDED, MSG_MODIFIED, MSG_ACCEPTED, ...
            @param $old_event Event before the change
            @param $new_event Event after the change
            @returns 0 = no update requested, > 0 update requested
            */
02480             function update_requested($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 fall-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->maketime($old_event['start'])-$this->maketime($new_event['start'])),
                                    abs($this->maketime($old_event['end'])-$this->maketime($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 || $msg_type == MSG_ADDED)
                              {
                                    ++$want_update;
                              }
                              break;
                        case 'no':
                              break;
                  }
                  //echo "<p>bocalendar::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;
            }

            /*!
            @function send_update
            @abstract sends update-messages to certain participants of an event
            @syntax send_update($msg_type,$to_notify,$old_event,$new_event=False)
            @param $msg_type type of the notification: MSG_ADDED, MSG_MODIFIED, MSG_ACCEPTED, ...
            @param $to_notify array with numerical user-ids as keys (!) (value is not used)
            @param $old_event Event before the change
            @param $new_event Event after the change
            */
02536             function send_update($msg_type,$to_notify,$old_event,$new_event=False,$user=False)
            {
                  //echo "<p>bocalendar::send_update(type=$msg_type,to_notify="; print_r($to_notify); echo ", old_event="; print_r($old_event); echo ", new_event="; print_r($new_event); echo ", user=$user)</p>\n";
                  if (!is_array($to_notify))
                  {
                        $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['phpgw_info']['apps']['calendar']['version'];

                  $sender = $GLOBALS['phpgw_info']['user']['email'];

                  $temp_tz_offset = $this->prefs['common']['tz_offset'];
                  $temp_timeformat = $this->prefs['common']['timeformat'];
                  $temp_dateformat = $this->prefs['common']['dateformat'];

                  $tz_offset = ((60 * 60) * (int)$temp_tz_offset);

                  if($old_event != False)
                  {
                        $t_old_start_time = $this->maketime($old_event['start']);
                        if($t_old_start_time < (time() - 86400))
                        {
                              return False;
                        }
                  }

                  $temp_user = $GLOBALS['phpgw_info']['user'];

                  if (!$user)
                  {
                        $user = $this->owner;
                  }
                  if ($GLOBALS['phpgw']->preferences->account_id != $user)
                  {
                        $GLOBALS['phpgw']->preferences->preferences($user);
                        $GLOBALS['phpgw_info']['user']['preferences'] = $GLOBALS['phpgw']->preferences->read_repository();
                  }

                  $event = $msg_type == MSG_ADDED || $msg_type == MSG_MODIFIED ? $new_event : $old_event;
                  if($old_event != False)
                  {
                        $old_starttime = $t_old_start_time - $GLOBALS['phpgw']->datetime->tz_offset;
                  }
                  $starttime = $this->maketime($event['start']) - $GLOBALS['phpgw']->datetime->tz_offset;
                  $endtime   = $this->maketime($event['end']) - $GLOBALS['phpgw']->datetime->tz_offset;

                  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_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 = $this->prefs['calendar']['notify'.$msg];
                  if (empty($notify_msg))
                  {
                        $notify_msg = $this->prefs['calendar']['notifyAdded'];      // use a default
                  }
                  $details = array(             // event-details for the notify-msg
                        'id'          => $msg_type == MSG_ADDED ? $new_event['id'] : $old_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']) : '';

                  $details['link'] = $GLOBALS['phpgw_info']['server']['webserver_url'].'/index.php?menuaction=calendar.uicalendar.view&cal_id='.$event['id'];
                  // if url is only a path, try guessing the rest ;-)
                  if ($GLOBALS['phpgw_info']['server']['webserver_url'][0] == '/')
                  {
                        $details['link'] = ($GLOBALS['phpgw_info']['server']['enforce_ssl'] || $_SERVER['HTTPS'] ? 'https://' : 'http://').
                              ($GLOBALS['phpgw_info']['server']['hostname'] ? $GLOBALS['phpgw_info']['server']['hostname'] : 'localhost').
                              $details['link'];
                  }

                  if(!is_object($GLOBALS['phpgw']->send))
                  {
                        $GLOBALS['phpgw']->send = CreateObject('phpgwapi.send');
                  }
                  $send = &$GLOBALS['phpgw']->send;

                  foreach($to_notify as $userid => $statusid)
                  {
                        $userid = (int)$userid;

                        if ($statusid == 'R' || $GLOBALS['phpgw']->accounts->get_type($userid) == 'g')
                        {
                              continue;   // dont notify rejected participants or groups
                        }
                        if($userid != $GLOBALS['phpgw_info']['user']['account_id'] ||  $msg_type == MSG_ALARM)
                        {
                              print_debug('Msg Type',$msg_type);
                              print_debug('UserID',$userid);

                              $preferences = CreateObject('phpgwapi.preferences',$userid);
                              $part_prefs = $preferences->read_repository();

                              if (!$this->update_requested($userid,$part_prefs,$msg_type,$old_event,$new_event))
                              {
                                    continue;
                              }
                              $GLOBALS['phpgw']->accounts->get_account_name($userid,$lid,$details['to-firstname'],$details['to-lastname']);
                              $details['to-fullname'] = $GLOBALS['phpgw']->common->display_fullname('',$details['to-firstname'],$details['to-lastname']);

                              $to = $GLOBALS['phpgw']->accounts->id2name($userid,'account_email');
                              if (empty($to) || $to[0] == '@' || $to[0] == '$')     // we have no valid email-address
                              {
                                    //echo "<p>bocalendar::send_update: Empty email adress for user '".$details['to-fullname']."' ==> ignored !!!</p>\n";
                                    continue;
                              }
                              print_debug('Email being sent to',$to);

                              $GLOBALS['phpgw_info']['user']['preferences']['common']['tz_offset'] = $part_prefs['common']['tz_offset'];
                              $GLOBALS['phpgw_info']['user']['preferences']['common']['timeformat'] = $part_prefs['common']['timeformat'];
                              $GLOBALS['phpgw_info']['user']['preferences']['common']['dateformat'] = $part_prefs['common']['dateformat'];

                              $GLOBALS['phpgw']->datetime->tz_offset = ((60 * 60) * (int)$GLOBALS['phpgw_info']['user']['preferences']['common']['tz_offset']);

                              if($old_starttime)
                              {
                                    $details['olddate'] = $GLOBALS['phpgw']->common->show_date($old_starttime);
                              }
                              $details['startdate'] = $GLOBALS['phpgw']->common->show_date($starttime);
                              $details['enddate']   = $GLOBALS['phpgw']->common->show_date($endtime);

                              list($subject,$body) = split("\n",$GLOBALS['phpgw']->preferences->parse_notify($notify_msg,$details),2);
                              $subject = $send->encode_subject($subject);
                              switch($part_prefs['calendar']['update_format'])
                              {
                                    case  'extended':
                                          $body .= "\n\n".lang('Event Details follow').":\n";
                                          foreach($event_arr as $key => $val)
                                          {
                                                if ($key != 'access' && $key != 'priority' && strlen($details[$key]))
                                                {
                                                      $body .= sprintf("%-20s %s\n",$val['field'].':',$details[$key]);
                                                }
                                          }
                                          break;

                                    case 'ical':
                                          $content_type = "calendar; method=$method; name=calendar.ics";
/* would be nice, need to get it working
                                          if ($body != '')
                                          {
                                                $boundary = '----Message-Boundary';
                                                $body .= "\n\n\n$boundary\nContent-type: text/$content_type\n".
                                                      "Content-Disposition: inline\nContent-transfer-encoding: 7BIT\n\n";
                                                $content_type = '';
                                          }
*/
                                          $body = ExecMethod('calendar.boicalendar.export',array(
                                                'l_event_id'  => $event['id'],
                                                'method'      => $method,
                                                'chunk_split' => False
                                          ));
                                          break;
                              }
                              $returncode = $send->msg('email',$to,$subject,$body,''/*$msgtype*/,'','','',$sender, $content_type/*,$boundary*/);
                              //echo "<p>send(to='$to', sender='$sender'<br>subject='$subject') returncode=$returncode<br>".nl2br($body)."</p>\n";

                              if (!$returncode) // not nice, but better than failing silently
                              {
                                    echo '<p><b>bocalendar::send_update</b>: '.lang("Failed sending message to '%1' #%2 subject='%3', sender='%4' !!!",$to,$userid,htmlspecialchars($subject), $sender)."<br>\n";
                                    echo '<i>'.$send->err['desc']."</i><br>\n";
                                    echo lang('This is mostly caused by a not or wrongly configured SMTP server. Notify your administrator.')."</p>\n";
                                    echo '<p>'.lang('Click %1here%2 to return to the calendar.','<a href="'.$GLOBALS['phpgw']->link('/calendar/').'">','</a>')."</p>\n";
                              }
                        }
                  }
                  unset($send);

                  if((is_int($this->user) && $this->user != $temp_user['account_id']) ||
                        (is_string($this->user) && $this->user != $temp_user['account_lid']))
                  {
                        $GLOBALS['phpgw_info']['user'] = $temp_user;
                  }

                  $GLOBALS['phpgw_info']['user']['preferences']['common']['tz_offset'] = $temp_tz_offset;
                  $GLOBALS['phpgw']->datetime->tz_offset = ((60 * 60) * $temp_tz_offset);
                  $GLOBALS['phpgw_info']['user']['preferences']['common']['timeformat'] = $temp_timeformat;
                  $GLOBALS['phpgw_info']['user']['preferences']['common']['dateformat'] = $temp_dateformat;

                  return $returncode;
            }

            function send_alarm($alarm)
            {
                  //echo "<p>bocalendar::send_alarm("; print_r($alarm); echo ")</p>\n";
                  $GLOBALS['phpgw_info']['user']['account_id'] = $this->owner = $alarm['owner'];

                  if (!$alarm['enabled'] || !$alarm['owner'] || !$alarm['cal_id'] || !($event = $this->so->read_entry($alarm['cal_id'])))
                  {
                        return False;     // event not found
                  }
                  if ($alarm['all'])
                  {
                        $to_notify = $event['participants'];
                  }
                  elseif ($this->check_perms(PHPGW_ACL_READ,$event))    // checks agains $this->owner set to $alarm[owner]
                  {
                        $to_notify[$alarm['owner']] = 'A';
                  }
                  else
                  {
                        return False;     // no rights
                  }
                  return $this->send_update(MSG_ALARM,$to_notify,$event,False,$alarm['owner']);
            }

            function get_alarms($event_id)
            {
                  return $this->so->get_alarm($event_id);
            }

            function alarm_today($event,$today,$starttime)
            {
                  $found = False;
                  @reset($event['alarm']);
                  $starttime_hi = $GLOBALS['phpgw']->common->show_date($starttime,'Hi');
                  $t_appt['month'] =$GLOBALS['phpgw']->common->show_date($today,'m');
                  $t_appt['mday'] = $GLOBALS['phpgw']->common->show_date($today,'d');
                  $t_appt['year'] = $GLOBALS['phpgw']->common->show_date($today,'Y');
                  $t_appt['hour'] = $GLOBALS['phpgw']->common->show_date($starttime,'H');
                  $t_appt['min']  = $GLOBALS['phpgw']->common->show_date($starttime,'i');
                  $t_appt['sec']  = 0;
                  $t_time = $this->maketime($t_appt) - $GLOBALS['phpgw']->datetime->tz_offset;
                  $y_time = $t_time - 86400;
                  $tt_time = $t_time + 86399;
                  print_debug('T_TIME',$t_time.' : '.$GLOBALS['phpgw']->common->show_date($t_time));
                  print_debug('Y_TIME',$y_time.' : '.$GLOBALS['phpgw']->common->show_date($y_time));
                  print_debug('TT_TIME',$tt_time.' : '.$GLOBALS['phpgw']->common->show_date($tt_time));
                  while(list($key,$alarm) = each($event['alarm']))
                  {
                        if($alarm['enabled'])
                        {
                              print_debug('TIME',$alarm['time'].' : '.$GLOBALS['phpgw']->common->show_date($alarm['time']).' ('.$event['id'].')');
                              if($event['recur_type'] != MCAL_RECUR_NONE)   /* Recurring Event */
                              {
                                    print_debug('Recurring Event');
                                    if($alarm['time'] > $y_time && $GLOBALS['phpgw']->common->show_date($alarm['time'],'Hi') < $starttime_hi && $alarm['time'] < $t_time)
                                    {
                                          $found = True;
                                    }
                              }
                              elseif($alarm['time'] > $y_time && $alarm['time'] < $t_time)
                              {
                                    $found = True;
                              }
                        }
                  }
                  print_debug('Found',$found);
                  return $found;
            }

            function prepare_recipients(&$new_event,$old_event)
            {
                  // Find modified and deleted users.....
                  while(list($old_userid,$old_status) = each($old_event['participants']))
                  {
                        if(isset($new_event['participants'][$old_userid]))
                        {
                              print_debug('Modifying event for user',$old_userid);
                              $this->modified[(int)$old_userid] = $new_status;
                        }
                        else
                        {
                              print_debug('Deleting user from the event',$old_userid);
                              $this->deleted[(int)$old_userid] = $old_status;
                        }
                  }
                  // Find new users.....
                  while(list($new_userid,$new_status) = each($new_event['participants']))
                  {
                        if(!isset($old_event['participants'][$new_userid]))
                        {
                              print_debug('Adding event for user',$new_userid);
                              $this->added[$new_userid] = 'U';
                              $new_event['participants'][$new_userid] = 'U';
                        }
                  }

                  if(count($this->added) > 0 || count($this->modified) > 0 || count($this->deleted) > 0)
                  {
                        if(count($this->added) > 0)
                        {
                              $this->send_update(MSG_ADDED,$this->added,'',$new_event);
                        }
                        if(count($this->modified) > 0)
                        {
                              $this->send_update(MSG_MODIFIED,$this->modified,$old_event,$new_event);
                        }
                        if(count($this->deleted) > 0)
                        {
                              $this->send_update(MSG_DELETED,$this->deleted,$old_event);
                        }
                  }
            }

            function remove_doubles_in_cache($firstday,$lastday)
            {
                  $already_moved = Array();
                  for($v=$firstday;$v<=$lastday;$v++)
                  {
                        if (!$this->cached_events[$v])
                        {
                              continue;
                        }
                        $cached = $this->cached_events[$v];
                        $this->cached_events[$v] = array();
                        while (list($g,$event) = each($cached))
                        {
                              $end = date('Ymd',$this->maketime($event['end']));
                              print_debug('EVENT',_debug_array($event,False));
                              print_debug('start',$start);
                              print_debug('v',$v);

                              if (!isset($already_moved[$event['id']]) || $event['recur_type'] && $v > $end)
                              {
                                    $this->cached_events[$v][] = $event;
                                    $already_moved[$event['id']] = 1;
                                    print_debug('Event moved');
                              }
                        }
                  }
            }

            function get_dirty_entries($lastmod=-1)
            {
                  $events = false;
                  $event_ids = $this->so->cal->list_dirty_events($lastmod);
                  if(is_array($event_ids))
                  {
                        foreach($event_ids as $key => $id)
                        {
                              $events[$id] = $this->so->cal->fetch_event($id);
                        }
                  }
                  unset($event_ids);

                  $rep_event_ids = $this->so->cal->list_dirty_events($lastmod,$true);
                  if(is_array($rep_event_ids))
                  {
                        foreach($rep_event_ids as $key => $id)
                        {
                              $events[$id] = $this->so->cal->fetch_event($id);
                        }
                  }
                  unset($rep_event_ids);

                  return $events;
            }

            function _debug_array($data)
            {
                  echo '<br>UI:';
                  _debug_array($data);
            }

            /*!
            @function rejected_no_show
            @abstract checks if event is rejected from user and he's not the owner and dont want rejected
            @param $event to check
            @returns True if event should not be shown
            */
02949             function rejected_no_show($event)
            {
                  $ret = !$this->prefs['calendar']['show_rejected'] &&
                        $event['owner'] != $this->owner &&
                        $event['participants'][$this->owner] == 'R';
                  //echo "<p>rejected_no_show($event[title])='$ret': user=$this->owner, event-owner=$event[owner], status='".$event['participants'][$this->owner]."', show_rejected='".$this->prefs['calendar']['show_rejected']."'</p>\n";
                  return $ret;
            }

            /* This is called only by list_cals().  It was moved here to remove fatal error in php5 beta4 */
            function list_cals_add($id,&$users,&$groups)
            {
                  $name = $GLOBALS['phpgw']->common->grab_owner_name($id);
                  if (($type = $GLOBALS['phpgw']->accounts->get_type($id)) == 'g')
                  {
                        $arr = &$groups;
                  }
                  else
                  {
                        $arr = &$users;
                  }
                  $arr[$name] = Array(
                        'grantor' => $id,
                        'value'   => ($type == 'g' ? 'g_' : '') . $id,
                        'name'    => $name
                  );
            }

            /*!
            @function list_cals
            @abstract generate list of user- / group-calendars for the selectbox in the header
            @returns alphabeticaly sorted array with groups first and then users
            */
02982             function list_cals()
            {
                  $users = $groups = array();
                  foreach($this->grants as $id => $rights)
                  {
                        $this->list_cals_add($id,$users,$groups);
                  }
                  if ($memberships = $GLOBALS['phpgw']->accounts->membership($GLOBALS['phpgw_info']['user']['account_id']))
                  {
                        foreach($memberships as $group_info)
                        {
                              $this->list_cals_add($group_info['account_id'],$users,$groups);

                              if ($account_perms = $GLOBALS['phpgw']->acl->get_ids_for_location($group_info['account_id'],PHPGW_ACL_READ,'calendar'))
                              {
                                    foreach($account_perms as $id)
                                    {
                                          $this->list_cals_add($id,$users,$groups);
                                    }
                              }
                        }
                  }
                  uksort($users,'strnatcasecmp');
                  uksort($groups,'strnatcasecmp');

                  return $users + $groups;      // users first and then groups, both alphabeticaly
            }

            /*!
            @function event2array
            @abstract create array with name, translated name and readable content of each attributes of an event
            @syntax event2array($event,$sep='<br>')
            @param $event event to use
            @returns array of attributes with fieldname as key and array with the 'field'=translated name \
                  'data' = readable content (for participants this is an array !)
            */
03018             function event2array($event)
            {
                  $ownerApps = $GLOBALS['phpgw']->acl->get_user_applications($event['owner']);

                  $var['title'] = Array(
                        'field'           => lang('Title'),
                        'data'            => $event['title']
                  );

                  // Some browser add a \n when its entered in the database. Not a big deal
                  // this will be printed even though its not needed.
                  $var['description'] = Array(
                        'field'     => lang('Description'),
                        'data'      => $event['description']
                  );

                  $cats = Array();
                  $this->cat->categories($this->bo->owner,'calendar');
                  if(strpos($event['category'],','))
                  {
                        $cats = explode(',',$event['category']);
                  }
                  else
                  {
                        $cats[] = $event['category'];
                  }
                  foreach($cats as $cat_id)
                  {
                        list($cat) = $this->cat->return_single($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'      => $GLOBALS['phpgw']->common->show_date($this->maketime($event['start']) - $GLOBALS['phpgw']->datetime->tz_offset),
                  );

                  $var['enddate'] = Array(
                        'field'     => lang('End Date/Time'),
                        'data'      => $GLOBALS['phpgw']->common->show_date($this->maketime($event['end']) - $GLOBALS['phpgw']->datetime->tz_offset)
                  );

                  $pri = Array(
                        1     => lang('Low'),
                        2     => lang('Normal'),
                        3     => lang('High')
                  );
                  $var['priority'] = Array(
                        'field'     => lang('Priority'),
                        'data'      => $pri[$event['priority']]
                  );

                  $var['owner'] = Array(
                        'field'     => lang('Created By'),
                        'data'      => $GLOBALS['phpgw']->common->grab_owner_name($event['owner'])
                  );

                  $var['updated'] = Array(
                        'field'     => lang('Updated'),
                        'data'      => $GLOBALS['phpgw']->common->show_date($this->maketime($event['modtime']))
                  );

                  $var['access'] = Array(
                        'field'     => lang('Access'),
                        'data'      => $event['public'] ? lang('Public') : lang('Private')
                  );

                  if($ownerApps['projects'] && $event['projectID'])
                  {
                        $boprojects = createObject('projects.boprojects');
                        $projectData = $boprojects->read_single_project($event['projectID']);
                        $var['project'] = Array
                        (
                              'field' => lang('Project'),
                              'data'  => $projectData['title'].'&nbsp;['.$projectData['number'].']'
                        );
                  }
                  if(@isset($event['groups'][0]))
                  {
                        $cal_grps = '';
                        for($i=0;$i<count($event['groups']);$i++)
                        {
                              if($GLOBALS['phpgw']->accounts->exists($event['groups'][$i]))
                              {
                                    $cal_grps .= ($i>0?'<br>':'').$GLOBALS['phpgw']->accounts->id2name($event['groups'][$i]);
                              }
                        }

                        $var['groups'] = Array(
                              'field'     => lang('Groups'),
                              'data'      => $cal_grps
                        );
                  }

                  if (isset($event['participants']) && is_array($event['participants']))
                  {
                        $participants = array();
                        foreach($event['participants'] as $user => $short_status)
                        {
                              if($GLOBALS['phpgw']->accounts->exists($user))
                              {
                                    $participants[$user] = $GLOBALS['phpgw']->common->grab_owner_name($user).' ('.$this->get_long_status($short_status).')';
                              }
                        }
                  }
                  $var['participants'] = Array(
                        'field'     => lang('Participants'),
                        'data'      => $participants
                  );

                  // Repeated Events
                  if($event['recur_type'] != MCAL_RECUR_NONE)
                  {
                        $str = lang($this->rpt_type[$event['recur_type']]);

                        $str_extra = array();
                        if ($event['recur_enddate']['mday'] != 0 && $event['recur_enddate']['month'] != 0 && $event['recur_enddate']['year'] != 0)
                        {
                              $recur_end = $this->maketime($event['recur_enddate']);
                              if($recur_end != 0)
                              {
                                    $recur_end -= $GLOBALS['phpgw']->datetime->tz_offset;
                                    $str_extra[] = lang('ends').': '.lang($GLOBALS['phpgw']->common->show_date($recur_end,'l')).', '.$this->long_date($recur_end).' ';
                              }
                        }
                        // only weekly uses the recur-data (days) !!!
                        if($event['recur_type'] == MCAL_RECUR_WEEKLY)
                        {
                              $repeat_days = array();
                              foreach ($this->rpt_day as $mcal_mask => $dayname)
                              {
                                    if ($event['recur_data'] & $mcal_mask)
                                    {
                                          $repeat_days[] = lang($dayname);
                                    }
                              }
                              if(count($repeat_days))
                              {
                                    $str_extra[] = lang('days repeated').': '.implode(', ',$repeat_days);
                              }
                        }
                        if($event['recur_interval'] != 0)
                        {
                              $str_extra[] = lang('Interval').': '.$event['recur_interval'];
                        }

                        if(count($str_extra))
                        {
                              $str .= ' ('.implode(', ',$str_extra).')';
                        }

                        $var['recur_type'] = Array(
                              'field'     => lang('Repetition'),
                              'data'      => $str,
                        );
                  }

                  if (!isset($this->fields))
                  {
                        $this->custom_fields = CreateObject('calendar.bocustom_fields');
                        $this->fields = &$this->custom_fields->fields;
                        $this->stock_fields = &$this->custom_fields->stock_fields;
                  }
// projects
                  if($ownerApps['projects'])
                        $this->fields['project']['disabled'] = false;
                        
                  foreach($this->fields as $field => $data)
                  {
                        if (!$data['disabled'])
                        {
                              if (isset($var[$field]))
                              {
                                    $sorted[$field] = $var[$field];
                              }
                              elseif (!isset($this->stock_fields[$field]) && strlen($event[$field]))  // Custom field
                              {
                                    $lang = lang($name = substr($field,1));
                                    $sorted[$field] = array(
                                          'field' => $lang == $name.'*' ? $name : $lang,
                                          'data'  => $event[$field]
                                    );
                              }
                        }
                        unset($var[$field]);
                  }
                  foreach($var as $name => $v)
                  {
                        $sorted[$name] = $v;

                  }
                  return $sorted;
            }

            /*!
            @function check_set_default_prefs
            @abstract sets the default prefs, if they are not already set (on a per pref. basis)
            @note It sets a flag in the app-session-data to be called only once per session
            */
03226             function check_set_default_prefs()
            {
                  if (($set = $GLOBALS['phpgw']->session->appsession('default_prefs_set','calendar')))
                  {
                        return;
                  }
                  $GLOBALS['phpgw']->session->appsession('default_prefs_set','calendar','set');

                  $default_prefs = $GLOBALS['phpgw']->preferences->default['calendar'];

                  $subject = lang('Calendar Event') . ' - $$action$$: $$startdate$$ $$title$$'."\n";
                  $defaults = array(
                        'defaultcalendar' => 'week',
                        'mainscreen_showevents' => '0',
                        'summary'         => 'no',
                        'receive_updates' => 'no',
                        'update_format'   => 'extended',    // leave it to extended for now, as iCal kills the message-body
                        'notifyAdded'     => $subject . lang ('You have a meeting scheduled for %1','$$startdate$$'),
                        'notifyCanceled'  => $subject . lang ('Your meeting scheduled for %1 has been canceled','$$startdate$$'),
                        'notifyModified'  => $subject . lang ('Your meeting that had been scheduled for %1 has been rescheduled to %2','$$olddate$$','$$startdate$$'),
                        'notifyResponse'  => $subject . lang ('On %1 %2 %3 your meeting request for %4','$$date$$','$$fullname$$','$$action$$','$$startdate$$'),
                        'notifyAlarm'     => lang('Alarm for %1 at %2 in %3','$$title$$','$$startdate$$','$$location$$')."\n".lang ('Here is your requested alarm.'),
                        'show_rejected'   => '0',
                        'display_status'  => '1',
                        'weekdaystarts'   => 'Monday',
                        'workdaystarts'   => '9',
                        'workdayends'     => '17',
                        'interval'        => '30',
                        'defaultlength'   => '60',
                        'planner_start_with_group' => $GLOBALS['phpgw']->accounts->name2id('Default'),
                        'planner_intervals_per_day'=> '4',
                        'defaultfilter'   => 'all',
                        'default_private' => '0',
                        'display_minicals'=> '1',
                        'print_black_white'=>'0'
                  );
                  foreach($defaults as $var => $default)
                  {
                        if (!isset($default_prefs[$var]) || $default_prefs[$var] == '')
                        {
                              $GLOBALS['phpgw']->preferences->add('calendar',$var,$default,'default');
                              $need_save = True;
                        }
                  }
                  if ($need_save)
                  {
                        $prefs = $GLOBALS['phpgw']->preferences->save_repository(False,'default');
                        $this->prefs['calendar'] = $prefs['calendar'];
                  }
                  if ($this->prefs['calendar']['send_updates'] && !isset($this->prefs['calendar']['receive_updates']))
                  {
                        $this->prefs['calendar']['receive_updates'] = $this->prefs['calendar']['send_updates'];
                        $GLOBALS['phpgw']->preferences->add('calendar','receive_updates',$this->prefs['calendar']['send_updates']);
                        $GLOBALS['phpgw']->preferences->delete('calendar','send_updates');
                        $prefs = $GLOBALS['phpgw']->preferences->save_repository();
                  }
            }

            // return array with all infolog categories (for xmlrpc)
            function categories($complete = False)
            {
                  return $GLOBALS['server']->categories($complete);
            }
      }
?>

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