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kolab_user_calendar.php
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kolab_user_calendar.php
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<?php
/**
* Kolab calendar storage class simulating a virtual user calendar
*
* @author Thomas Bruederli <bruederli@kolabsys.com>
*
* Copyright (C) 2014, Kolab Systems AG <contact@kolabsys.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
class kolab_user_calendar extends kolab_calendar
{
public $id = 'unknown';
public $ready = false;
public $readonly = true;
public $attachments = false;
public $subscriptions = false;
protected $userdata = array();
protected $timeindex = array();
/**
* Default constructor
*/
public function __construct($user_or_folder, $calendar)
{
$this->cal = $calendar;
// full user record is provided
if (is_array($user_or_folder)) {
$this->userdata = $user_or_folder;
$this->storage = new kolab_storage_folder_user($this->userdata['kolabtargetfolder'], '', $this->userdata);
}
else { // get user record from LDAP
$this->storage = new kolab_storage_folder_user($user_or_folder);
$this->userdata = $this->storage->ldaprec;
}
$this->ready = !empty($this->userdata['kolabtargetfolder']);
$this->storage->type = 'event';
if ($this->ready) {
// ID is derrived from the user's kolabtargetfolder attribute
$this->id = kolab_storage::folder_id($this->userdata['kolabtargetfolder'], true);
$this->imap_folder = $this->userdata['kolabtargetfolder'];
$this->name = $this->storage->get_name();
$this->parent = ''; // user calendars are top level
// user-specific alarms settings win
$prefs = $this->cal->rc->config->get('kolab_calendars', array());
if (isset($prefs[$this->id]['showalarms']))
$this->alarms = $prefs[$this->id]['showalarms'];
}
}
/**
* Getter for a nice and human readable name for this calendar
*
* @return string Name of this calendar
*/
public function get_name()
{
return $this->userdata['displayname'] ?: ($this->userdata['name'] ?: $this->userdata['mail']);
}
/**
* Getter for the IMAP folder owner
*
* @return string Name of the folder owner
*/
public function get_owner()
{
return $this->userdata['mail'];
}
/**
*
*/
public function get_title()
{
return trim($this->userdata['displayname'] . '; ' . $this->userdata['mail'], '; ');
}
/**
* Getter for the name of the namespace to which the IMAP folder belongs
*
* @return string Name of the namespace (personal, other, shared)
*/
public function get_namespace()
{
return 'other user';
}
/**
* Getter for the top-end calendar folder name (not the entire path)
*
* @return string Name of this calendar
*/
public function get_foldername()
{
return $this->get_name();
}
/**
* Return color to display this calendar
*/
public function get_color()
{
// calendar color is stored in local user prefs
$prefs = $this->cal->rc->config->get('kolab_calendars', array());
if (!empty($prefs[$this->id]) && !empty($prefs[$this->id]['color']))
return $prefs[$this->id]['color'];
return 'cc0000';
}
/**
* Compose an URL for CalDAV access to this calendar (if configured)
*/
public function get_caldav_url()
{
return false;
}
/**
* Check subscription status of this folder
*
* @return boolean True if subscribed, false if not
*/
public function is_subscribed()
{
return $this->storage->is_subscribed();
}
/**
* Update properties of this calendar folder
*
* @see calendar_driver::edit_calendar()
*/
public function update(&$prop)
{
// don't change anything.
// let kolab_driver save props in local prefs
return $prop['id'];
}
/**
* Getter for a single event object
*/
public function get_event($id)
{
// TODO: implement this
return $this->events[$id];
}
/**
* @param integer Event's new start (unix timestamp)
* @param integer Event's new end (unix timestamp)
* @param string Search query (optional)
* @param boolean Include virtual events (optional)
* @param array Additional parameters to query storage
* @return array A list of event records
*/
public function list_events($start, $end, $search = null, $virtual = 1, $query = array())
{
// convert to DateTime for comparisons
try {
$start_dt = new DateTime('@'.$start);
}
catch (Exception $e) {
$start_dt = new DateTime('@0');
}
try {
$end_dt = new DateTime('@'.$end);
}
catch (Exception $e) {
$end_dt = new DateTime('today +10 years');
}
$limit_changed = null;
if (!empty($query)) {
foreach ($query as $q) {
if ($q[0] == 'changed' && $q[1] == '>=') {
try { $limit_changed = new DateTime('@'.$q[2]); }
catch (Exception $e) { /* ignore */ }
}
}
}
// aggregate all calendar folders the user shares (but are not subscribed)
foreach (kolab_storage::list_user_folders($this->userdata, 'event', false) as $foldername) {
$cal = new kolab_calendar($foldername, $this->cal);
foreach ($cal->list_events($start, $end, $search, 1) as $event) {
$this->events[$event['id']] = $event;
$this->timeindex[$this->time_key($event)] = $event['id'];
}
}
// get events from the user's free/busy feed (for quickview only)
$fbview = $this->cal->rc->config->get('calendar_include_freebusy_data', 1);
if ($fbview && ($fbview == 1 || !empty($_REQUEST['_quickview'])) && empty($search)) {
$this->fetch_freebusy($limit_changed);
}
$events = array();
foreach ($this->events as $event) {
// list events in requested time window
if ($event['start'] <= $end_dt && $event['end'] >= $start_dt &&
(!$limit_changed || !$event['changed'] || $event['changed'] >= $limit_changed)) {
$events[] = $event;
}
}
// avoid session race conditions that will loose temporary subscriptions
$this->cal->rc->session->nowrite = true;
return $events;
}
/**
*
* @param integer Date range start (unix timestamp)
* @param integer Date range end (unix timestamp)
* @return integer Count
*/
public function count_events($start, $end = null)
{
// not implemented
return 0;
}
/**
* Helper method to fetch free/busy data for the user and turn it into calendar data
*/
private function fetch_freebusy($limit_changed = null)
{
// ask kolab server first
try {
$request_config = array(
'store_body' => true,
'follow_redirects' => true,
);
$request = libkolab::http_request(kolab_storage::get_freebusy_url($this->userdata['mail']), 'GET', $request_config);
$response = $request->send();
// authentication required
if ($response->getStatus() == 401) {
$request->setAuth($this->rc->user->get_username(), $this->rc->decrypt($_SESSION['password']));
$response = $request->send();
}
if ($response->getStatus() == 200)
$fbdata = $response->getBody();
unset($request, $response);
}
catch (Exception $e) {
rcube::raise_error(array(
'code' => 900,
'type' => 'php',
'file' => __FILE__,
'line' => __LINE__,
'message' => "Error fetching free/busy information: " . $e->getMessage()),
true, false);
return false;
}
$statusmap = array(
'FREE' => 'free',
'BUSY' => 'busy',
'BUSY-TENTATIVE' => 'tentative',
'X-OUT-OF-OFFICE' => 'outofoffice',
'OOF' => 'outofoffice',
);
$titlemap = array(
'FREE' => $this->cal->gettext('availfree'),
'BUSY' => $this->cal->gettext('availbusy'),
'BUSY-TENTATIVE' => $this->cal->gettext('availtentative'),
'X-OUT-OF-OFFICE' => $this->cal->gettext('availoutofoffice'),
);
// console('_fetch_freebusy', kolab_storage::get_freebusy_url($this->userdata['mail']), $fbdata);
// parse free-busy information
$count = 0;
if ($fbdata) {
$ical = $this->cal->get_ical();
$ical->import($fbdata);
if ($fb = $ical->freebusy) {
// consider 'changed >= X' queries
if ($limit_changed && $fb['created'] && $fb['created'] < $limit_changed) {
return 0;
}
foreach ($fb['periods'] as $tuple) {
list($from, $to, $type) = $tuple;
$event = array(
'id' => md5($this->id . $from->format('U') . '/' . $to->format('U')),
'calendar' => $this->id,
'changed' => $fb['created'] ?: new DateTime(),
'title' => $this->get_name() . ' ' . ($titlemap[$type] ?: $type),
'start' => $from,
'end' => $to,
'free_busy' => $statusmap[$type] ?: 'busy',
'className' => 'fc-type-freebusy',
'organizer' => array(
'email' => $this->userdata['mail'],
'name' => $this->userdata['displayname'],
),
);
// avoid duplicate entries
$key = $this->time_key($event);
if (!$this->timeindex[$key]) {
$this->events[$event['id']] = $event;
$this->timeindex[$key] = $event['id'];
$count++;
}
}
}
}
return $count;
}
/**
* Helper to build a key for the absolute time slot the given event convers
*/
private function time_key($event)
{
return sprintf('%s/%s', $event['start']->format('U'), is_object($event['end']->format('U')) ?: '0');
}
/**
* Create a new event record
*
* @see calendar_driver::new_event()
*
* @return mixed The created record ID on success, False on error
*/
public function insert_event($event)
{
return false;
}
/**
* Update a specific event record
*
* @see calendar_driver::new_event()
* @return boolean True on success, False on error
*/
public function update_event($event, $exception_id = null)
{
return false;
}
/**
* Delete an event record
*
* @see calendar_driver::remove_event()
* @return boolean True on success, False on error
*/
public function delete_event($event, $force = true)
{
return false;
}
/**
* Restore deleted event record
*
* @see calendar_driver::undelete_event()
* @return boolean True on success, False on error
*/
public function restore_event($event)
{
return false;
}
/**
* Convert from Kolab_Format to internal representation
*/
private function _to_rcube_event($record)
{
$record['id'] = $record['uid'];
$record['calendar'] = $this->id;
return kolab_driver::to_rcube_event($record);
}
}

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kolab_user_calendar.php (11 KB)

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