rc1: plugins/calendar/calendar.php comparison

comparison plugins/calendar/calendar.php @ 3:f6fe4b6ae66a

calendar plugin nearly as distributed

author	Charlie Root
date	Sat, 13 Jan 2018 08:56:12 -0500
parents
children	3bd5fe8166b8

comparison

equal deleted inserted replaced

-:c828b0fd4a6e
+:f6fe4b6ae66a
+<?php
+/**
+* Calendar plugin for Roundcube webmail
+*
+* @author Lazlo Westerhof <hello@lazlo.me>
+* @author Thomas Bruederli <bruederli@kolabsys.com>
+*
+* Copyright (C) 2010, Lazlo Westerhof <hello@lazlo.me>
+* Copyright (C) 2014-2015, 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 calendar extends rcube_plugin
+{
+const FREEBUSY_UNKNOWN = 0;
+const FREEBUSY_FREE = 1;
+const FREEBUSY_BUSY = 2;
+const FREEBUSY_TENTATIVE = 3;
+const FREEBUSY_OOF = 4;
+const SESSION_KEY = 'calendar_temp';
+public $task = '?(?!logout).*';
+public $rc;
+public $lib;
+public $resources_dir;
+public $home;  // declare public to be used in other classes
+public $urlbase;
+public $timezone;
+public $timezone_offset;
+public $gmt_offset;
+public $ui;
+public $defaults = array(
+'calendar_default_view' => "agendaWeek",
+'calendar_timeslots'    => 2,
+'calendar_work_start'   => 6,
+'calendar_work_end'     => 18,
+'calendar_agenda_range' => 60,
+'calendar_agenda_sections' => 'smart',
+'calendar_event_coloring'  => 0,
+'calendar_time_indicator'  => true,
+'calendar_allow_invite_shared' => false,
+'calendar_itip_send_option'    => 3,
+'calendar_itip_after_action'   => 0,
+);
+// These are implemented with __get()
+//  private $ical;
+//  private $itip;
+//  private $driver;
+/**
+* Plugin initialization.
+*/
+function init()
+{
+$this->rc = rcube::get_instance();
+$this->register_task('calendar', 'calendar');
+// load calendar configuration
+$this->load_config();
+// catch iTIP confirmation requests that don're require a valid session
+if ($this->rc->action == 'attend' && !empty($_REQUEST['_t'])) {
+$this->add_hook('startup', array($this, 'itip_attend_response'));
+}
+else if ($this->rc->action == 'feed' && !empty($_REQUEST['_cal'])) {
+$this->add_hook('startup', array($this, 'ical_feed_export'));
+}
+else if ($this->rc->task != 'login') {
+// default startup routine
+$this->add_hook('startup', array($this, 'startup'));
+}
+$this->add_hook('user_delete', array($this, 'user_delete'));
+}
+/**
+* Setup basic plugin environment and UI
+*/
+protected function setup()
+{
+$this->require_plugin('libcalendaring');
+$this->lib             = libcalendaring::get_instance();
+$this->timezone        = $this->lib->timezone;
+$this->gmt_offset      = $this->lib->gmt_offset;
+$this->dst_active      = $this->lib->dst_active;
+$this->timezone_offset = $this->gmt_offset / 3600 - $this->dst_active;
+// load localizations
+$this->add_texts('localization/', $this->rc->task == 'calendar' && (!$this->rc->action || $this->rc->action == 'print'));
+require($this->home . '/lib/calendar_ui.php');
+$this->ui = new calendar_ui($this);
+}
+/**
+* Startup hook
+*/
+public function startup($args)
+{
+// the calendar module can be enabled/disabled by the kolab_auth plugin
+if ($this->rc->config->get('calendar_disabled', false) || !$this->rc->config->get('calendar_enabled', true))
+return;
+$this->setup();
+// load Calendar user interface
+if (!$this->rc->output->ajax_call && (!$this->rc->output->env['framed'] || $args['action'] == 'preview')) {
+$this->ui->init();
+// settings are required in (almost) every GUI step
+if ($args['action'] != 'attend')
+$this->rc->output->set_env('calendar_settings', $this->load_settings());
+}
+if ($args['task'] == 'calendar' && $args['action'] != 'save-pref') {
+if ($args['action'] != 'upload') {
+$this->load_driver();
+}
+// register calendar actions
+$this->register_action('index', array($this, 'calendar_view'));
+$this->register_action('event', array($this, 'event_action'));
+$this->register_action('calendar', array($this, 'calendar_action'));
+$this->register_action('count', array($this, 'count_events'));
+$this->register_action('load_events', array($this, 'load_events'));
+$this->register_action('export_events', array($this, 'export_events'));
+$this->register_action('import_events', array($this, 'import_events'));
+$this->register_action('upload', array($this, 'attachment_upload'));
+$this->register_action('get-attachment', array($this, 'attachment_get'));
+$this->register_action('freebusy-status', array($this, 'freebusy_status'));
+$this->register_action('freebusy-times', array($this, 'freebusy_times'));
+$this->register_action('randomdata', array($this, 'generate_randomdata'));
+$this->register_action('print', array($this,'print_view'));
+$this->register_action('mailimportitip', array($this, 'mail_import_itip'));
+$this->register_action('mailimportattach', array($this, 'mail_import_attachment'));
+$this->register_action('mailtoevent', array($this, 'mail_message2event'));
+$this->register_action('inlineui', array($this, 'get_inline_ui'));
+$this->register_action('check-recent', array($this, 'check_recent'));
+$this->register_action('itip-status', array($this, 'event_itip_status'));
+$this->register_action('itip-remove', array($this, 'event_itip_remove'));
+$this->register_action('itip-decline-reply', array($this, 'mail_itip_decline_reply'));
+$this->register_action('itip-delegate', array($this, 'mail_itip_delegate'));
+$this->register_action('resources-list', array($this, 'resources_list'));
+$this->register_action('resources-owner', array($this, 'resources_owner'));
+$this->register_action('resources-calendar', array($this, 'resources_calendar'));
+$this->register_action('resources-autocomplete', array($this, 'resources_autocomplete'));
+$this->add_hook('refresh', array($this, 'refresh'));
+// remove undo information...
+if ($undo = $_SESSION['calendar_event_undo']) {
+// ...after timeout
+$undo_time = $this->rc->config->get('undo_timeout', 0);
+if ($undo['ts'] < time() - $undo_time) {
+$this->rc->session->remove('calendar_event_undo');
+// @TODO: do EXPUNGE on kolab objects?
+}
+}
+}
+else if ($args['task'] == 'settings') {
+// add hooks for Calendar settings
+$this->add_hook('preferences_sections_list', array($this, 'preferences_sections_list'));
+$this->add_hook('preferences_list', array($this, 'preferences_list'));
+$this->add_hook('preferences_save', array($this, 'preferences_save'));
+}
+else if ($args['task'] == 'mail') {
+// hooks to catch event invitations on incoming mails
+if ($args['action'] == 'show' || $args['action'] == 'preview') {
+$this->add_hook('template_object_messagebody', array($this, 'mail_messagebody_html'));
+}
+// add 'Create event' item to message menu
+if ($this->api->output->type == 'html') {
+$this->api->add_content(html::tag('li', null,
+$this->api->output->button(array(
+'command'  => 'calendar-create-from-mail',
+'label'    => 'calendar.createfrommail',
+'type'     => 'link',
+'classact' => 'icon calendarlink active',
+'class'    => 'icon calendarlink',
+'innerclass' => 'icon calendar',
+))),
+'messagemenu');
+$this->api->output->add_label('calendar.createfrommail');
+}
+$this->add_hook('messages_list', array($this, 'mail_messages_list'));
+$this->add_hook('message_compose', array($this, 'mail_message_compose'));
+}
+else if ($args['task'] == 'addressbook') {
+if ($this->rc->config->get('calendar_contact_birthdays')) {
+$this->add_hook('contact_update', array($this, 'contact_update'));
+$this->add_hook('contact_create', array($this, 'contact_update'));
+}
+}
+// add hooks to display alarms
+$this->add_hook('pending_alarms', array($this, 'pending_alarms'));
+$this->add_hook('dismiss_alarms', array($this, 'dismiss_alarms'));
+}
+/**
+* Helper method to load the backend driver according to local config
+*/
+private function load_driver()
+{
+if (is_object($this->driver))
+return;
+$driver_name = $this->rc->config->get('calendar_driver', 'database');
+$driver_class = $driver_name . '_driver';
+require_once($this->home . '/drivers/calendar_driver.php');
+require_once($this->home . '/drivers/' . $driver_name . '/' . $driver_class . '.php');
+$this->driver = new $driver_class($this);
+if ($this->driver->undelete)
+$this->driver->undelete = $this->rc->config->get('undo_timeout', 0) > 0;
+}
+/**
+* Load iTIP functions
+*/
+private function load_itip()
+{
+if (!$this->itip) {
+require_once($this->home . '/lib/calendar_itip.php');
+$this->itip = new calendar_itip($this);
+if ($this->rc->config->get('kolab_invitation_calendars'))
+$this->itip->set_rsvp_actions(array('accepted','tentative','declined','delegated','needs-action'));
+}
+return $this->itip;
+}
+/**
+* Load iCalendar functions
+*/
+public function get_ical()
+{
+if (!$this->ical) {
+$this->ical = libcalendaring::get_ical();
+}
+return $this->ical;
+}
+/**
+* Get properties of the calendar this user has specified as default
+*/
+public function get_default_calendar($sensitivity = null, $calendars = null)
+{
+if ($calendars === null) {
+$calendars = $this->driver->list_calendars(calendar_driver::FILTER_PERSONAL | calendar_driver::FILTER_WRITEABLE);
+}
+$default_id = $this->rc->config->get('calendar_default_calendar');
+$calendar   = $calendars[$default_id] ?: null;
+if (!$calendar || $sensitivity) {
+foreach ($calendars as $cal) {
+if ($sensitivity && $cal['subtype'] == $sensitivity) {
+$calendar = $cal;
+break;
+}
+if ($cal['default'] && $cal['editable']) {
+$calendar = $cal;
+}
+if ($cal['editable']) {
+$first = $cal;
+}
+}
+}
+return $calendar ?: $first;
+}
+/**
+* Render the main calendar view from skin template
+*/
+function calendar_view()
+{
+$this->rc->output->set_pagetitle($this->gettext('calendar'));
+// Add CSS stylesheets to the page header
+$this->ui->addCSS();
+// Add JS files to the page header
+$this->ui->addJS();
+$this->ui->init_templates();
+$this->rc->output->add_label('lowest','low','normal','high','highest','delete','cancel','uploading','noemailwarning','close');
+// initialize attendees autocompletion
+$this->rc->autocomplete_init();
+$this->rc->output->set_env('timezone', $this->timezone->getName());
+$this->rc->output->set_env('calendar_driver', $this->rc->config->get('calendar_driver'), false);
+$this->rc->output->set_env('calendar_resources', (bool)$this->rc->config->get('calendar_resources_driver'));
+$this->rc->output->set_env('identities-selector', $this->ui->identity_select(array('id' => 'edit-identities-list', 'aria-label' => $this->gettext('roleorganizer'))));
+$view = rcube_utils::get_input_value('view', rcube_utils::INPUT_GPC);
+if (in_array($view, array('agendaWeek', 'agendaDay', 'month', 'table')))
+$this->rc->output->set_env('view', $view);
+if ($date = rcube_utils::get_input_value('date', rcube_utils::INPUT_GPC))
+$this->rc->output->set_env('date', $date);
+if ($msgref = rcube_utils::get_input_value('itip', rcube_utils::INPUT_GPC))
+$this->rc->output->set_env('itip_events', $this->itip_events($msgref));
+$this->rc->output->send("calendar.calendar");
+}
+/**
+* Handler for preferences_sections_list hook.
+* Adds Calendar settings sections into preferences sections list.
+*
+* @param array Original parameters
+* @return array Modified parameters
+*/
+function preferences_sections_list($p)
+{
+$p['list']['calendar'] = array(
+'id' => 'calendar', 'section' => $this->gettext('calendar'),
+);
+return $p;
+}
+/**
+* Handler for preferences_list hook.
+* Adds options blocks into Calendar settings sections in Preferences.
+*
+* @param array Original parameters
+* @return array Modified parameters
+*/
+function preferences_list($p)
+{
+if ($p['section'] != 'calendar') {
+return $p;
+}
+$no_override = array_flip((array)$this->rc->config->get('dont_override'));
+$p['blocks']['view']['name'] = $this->gettext('mainoptions');
+if (!isset($no_override['calendar_default_view'])) {
+if (!$p['current']) {
+$p['blocks']['view']['content'] = true;
+return $p;
+}
+$field_id = 'rcmfd_default_view';
+$select = new html_select(array('name' => '_default_view', 'id' => $field_id));
+$select->add($this->gettext('day'), "agendaDay");
+$select->add($this->gettext('week'), "agendaWeek");
+$select->add($this->gettext('month'), "month");
+$select->add($this->gettext('agenda'), "table");
+$p['blocks']['view']['options']['default_view'] = array(
+'title' => html::label($field_id, rcube::Q($this->gettext('default_view'))),
+'content' => $select->show($this->rc->config->get('calendar_default_view', $this->defaults['calendar_default_view'])),
+);
+}
+if (!isset($no_override['calendar_timeslots'])) {
+if (!$p['current']) {
+$p['blocks']['view']['content'] = true;
+return $p;
+}
+$field_id = 'rcmfd_timeslot';
+$choices = array('1', '2', '3', '4', '6');
+$select = new html_select(array('name' => '_timeslots', 'id' => $field_id));
+$select->add($choices);
+$p['blocks']['view']['options']['timeslots'] = array(
+'title' => html::label($field_id, rcube::Q($this->gettext('timeslots'))),
+'content' => $select->show(strval($this->rc->config->get('calendar_timeslots', $this->defaults['calendar_timeslots']))),
+);
+}
+if (!isset($no_override['calendar_first_day'])) {
+if (!$p['current']) {
+$p['blocks']['view']['content'] = true;
+return $p;
+}
+$field_id = 'rcmfd_firstday';
+$select = new html_select(array('name' => '_first_day', 'id' => $field_id));
+$select->add($this->gettext('sunday'), '0');
+$select->add($this->gettext('monday'), '1');
+$select->add($this->gettext('tuesday'), '2');
+$select->add($this->gettext('wednesday'), '3');
+$select->add($this->gettext('thursday'), '4');
+$select->add($this->gettext('friday'), '5');
+$select->add($this->gettext('saturday'), '6');
+$p['blocks']['view']['options']['first_day'] = array(
+'title' => html::label($field_id, rcube::Q($this->gettext('first_day'))),
+'content' => $select->show(strval($this->rc->config->get('calendar_first_day', $this->defaults['calendar_first_day']))),
+);
+}
+if (!isset($no_override['calendar_first_hour'])) {
+if (!$p['current']) {
+$p['blocks']['view']['content'] = true;
+return $p;
+}
+$time_format = $this->rc->config->get('time_format', libcalendaring::to_php_date_format($this->rc->config->get('calendar_time_format', $this->defaults['calendar_time_format'])));
+$select_hours = new html_select();
+for ($h = 0; $h < 24; $h++)
+$select_hours->add(date($time_format, mktime($h, 0, 0)), $h);
+$field_id = 'rcmfd_firsthour';
+$p['blocks']['view']['options']['first_hour'] = array(
+'title' => html::label($field_id, rcube::Q($this->gettext('first_hour'))),
+'content' => $select_hours->show($this->rc->config->get('calendar_first_hour', $this->defaults['calendar_first_hour']), array('name' => '_first_hour', 'id' => $field_id)),
+);
+}
+if (!isset($no_override['calendar_work_start'])) {
+if (!$p['current']) {
+$p['blocks']['view']['content'] = true;
+return $p;
+}
+$field_id = 'rcmfd_workstart';
+$p['blocks']['view']['options']['workinghours'] = array(
+'title' => html::label($field_id, rcube::Q($this->gettext('workinghours'))),
+'content' => $select_hours->show($this->rc->config->get('calendar_work_start', $this->defaults['calendar_work_start']), array('name' => '_work_start', 'id' => $field_id)) .
+' &mdash; ' . $select_hours->show($this->rc->config->get('calendar_work_end', $this->defaults['calendar_work_end']), array('name' => '_work_end', 'id' => $field_id)),
+);
+}
+if (!isset($no_override['calendar_event_coloring'])) {
+if (!$p['current']) {
+$p['blocks']['view']['content'] = true;
+return $p;
+}
+$field_id = 'rcmfd_coloring';
+$select_colors = new html_select(array('name' => '_event_coloring', 'id' => $field_id));
+$select_colors->add($this->gettext('coloringmode0'), 0);
+$select_colors->add($this->gettext('coloringmode1'), 1);
+$select_colors->add($this->gettext('coloringmode2'), 2);
+$select_colors->add($this->gettext('coloringmode3'), 3);
+$p['blocks']['view']['options']['eventcolors'] = array(
+'title' => html::label($field_id . 'value', rcube::Q($this->gettext('eventcoloring'))),
+'content' => $select_colors->show($this->rc->config->get('calendar_event_coloring', $this->defaults['calendar_event_coloring'])),
+);
+}
+// loading driver is expensive, don't do it if not needed
+$this->load_driver();
+if (!isset($no_override['calendar_default_alarm_type']) || !isset($no_override['calendar_default_alarm_offset'])) {
+if (!$p['current']) {
+$p['blocks']['view']['content'] = true;
+return $p;
+}
+$alarm_type = $alarm_offset = '';
+if (!isset($no_override['calendar_default_alarm_type'])) {
+$field_id    = 'rcmfd_alarm';
+$select_type = new html_select(array('name' => '_alarm_type', 'id' => $field_id));
+$select_type->add($this->gettext('none'), '');
+foreach ($this->driver->alarm_types as $type) {
+$select_type->add($this->rc->gettext(strtolower("alarm{$type}option"), 'libcalendaring'), $type);
+}
+$alarm_type = $select_type->show($this->rc->config->get('calendar_default_alarm_type', ''));
+}
+if (!isset($no_override['calendar_default_alarm_offset'])) {
+$field_id      = 'rcmfd_alarm';
+$input_value   = new html_inputfield(array('name' => '_alarm_value', 'id' => $field_id . 'value', 'size' => 3));
+$select_offset = new html_select(array('name' => '_alarm_offset', 'id' => $field_id . 'offset'));
+foreach (array('-M','-H','-D','+M','+H','+D') as $trigger) {
+$select_offset->add($this->rc->gettext('trigger' . $trigger, 'libcalendaring'), $trigger);
+}
+$preset = libcalendaring::parse_alarm_value($this->rc->config->get('calendar_default_alarm_offset', '-15M'));
+$alarm_offset = $input_value->show($preset[0]) . ' ' . $select_offset->show($preset[1]);
+}
+$p['blocks']['view']['options']['alarmtype'] = array(
+'title' => html::label($field_id, rcube::Q($this->gettext('defaultalarmtype'))),
+'content' => $alarm_type . ' ' . $alarm_offset,
+);
+}
+if (!isset($no_override['calendar_default_calendar'])) {
+if (!$p['current']) {
+$p['blocks']['view']['content'] = true;
+return $p;
+}
+// default calendar selection
+$field_id = 'rcmfd_default_calendar';
+$select_cal = new html_select(array('name' => '_default_calendar', 'id' => $field_id, 'is_escaped' => true));
+foreach ((array)$this->driver->list_calendars(calendar_driver::FILTER_PERSONAL | calendar_driver::FILTER_ACTIVE) as $id => $prop) {
+$select_cal->add($prop['name'], strval($id));
+if ($prop['default'])
+$default_calendar = $id;
+}
+$p['blocks']['view']['options']['defaultcalendar'] = array(
+'title' => html::label($field_id . 'value', rcube::Q($this->gettext('defaultcalendar'))),
+'content' => $select_cal->show($this->rc->config->get('calendar_default_calendar', $default_calendar)),
+);
+}
+$p['blocks']['itip']['name'] = $this->gettext('itipoptions');
+// Invitations handling
+if (!isset($no_override['calendar_itip_after_action'])) {
+if (!$p['current']) {
+$p['blocks']['itip']['content'] = true;
+return $p;
+}
+$field_id = 'rcmfd_after_action';
+$select   = new html_select(array('name' => '_after_action', 'id' => $field_id,
+'onchange' => "\$('#{$field_id}_select')[this.value == 4 ? 'show' : 'hide']()"));
+$select->add($this->gettext('afternothing'), '');
+$select->add($this->gettext('aftertrash'), 1);
+$select->add($this->gettext('afterdelete'), 2);
+$select->add($this->gettext('afterflagdeleted'), 3);
+$select->add($this->gettext('aftermoveto'), 4);
+$val = $this->rc->config->get('calendar_itip_after_action', $this->defaults['calendar_itip_after_action']);
+if ($val !== null && $val !== '' && !is_int($val)) {
+$folder = $val;
+$val    = 4;
+}
+$folders = $this->rc->folder_selector(array(
+'id'            => $field_id . '_select',
+'name'          => '_after_action_folder',
+'maxlength'     => 30,
+'folder_filter' => 'mail',
+'folder_rights' => 'w',
+'style'         => $val !== 4 ? 'display:none' : '',
+));
+$p['blocks']['itip']['options']['after_action'] = array(
+'title'   => html::label($field_id, rcube::Q($this->gettext('afteraction'))),
+'content' => $select->show($val) . $folders->show($folder),
+);
+}
+// category definitions
+if (!$this->driver->nocategories && !isset($no_override['calendar_categories'])) {
+$p['blocks']['categories']['name'] = $this->gettext('categories');
+if (!$p['current']) {
+$p['blocks']['categories']['content'] = true;
+return $p;
+}
+$categories = (array) $this->driver->list_categories();
+$categories_list = '';
+foreach ($categories as $name => $color) {
+$key = md5($name);
+$field_class = 'rcmfd_category_' . str_replace(' ', '_', $name);
+$category_remove = new html_inputfield(array('type' => 'button', 'value' => 'X', 'class' => 'button', 'onclick' => '$(this).parent().remove()', 'title' => $this->gettext('remove_category')));
+$category_name  = new html_inputfield(array('name' => "_categories[$key]", 'class' => $field_class, 'size' => 30, 'disabled' => $this->driver->categoriesimmutable));
+$category_color = new html_inputfield(array('name' => "_colors[$key]", 'class' => "$field_class colors", 'size' => 6));
+$hidden = $this->driver->categoriesimmutable ? html::tag('input', array('type' => 'hidden', 'name' => "_categories[$key]", 'value' => $name)) : '';
+$categories_list .= html::div(null, $hidden . $category_name->show($name) . '&nbsp;' . $category_color->show($color) . '&nbsp;' . $category_remove->show());
+}
+$p['blocks']['categories']['options']['category_' . $name] = array(
+'content' => html::div(array('id' => 'calendarcategories'), $categories_list),
+);
+$field_id = 'rcmfd_new_category';
+$new_category = new html_inputfield(array('name' => '_new_category', 'id' => $field_id, 'size' => 30));
+$add_category = new html_inputfield(array('type' => 'button', 'class' => 'button', 'value' => $this->gettext('add_category'),  'onclick' => "rcube_calendar_add_category()"));
+$p['blocks']['categories']['options']['categories'] = array(
+'content' => $new_category->show('') . '&nbsp;' . $add_category->show(),
+);
+$this->rc->output->add_script('function rcube_calendar_add_category(){
+var name = $("#rcmfd_new_category").val();
+if (name.length) {
+var input = $("<input>").attr("type", "text").attr("name", "_categories[]").attr("size", 30).val(name);
+var color = $("<input>").attr("type", "text").attr("name", "_colors[]").attr("size", 6).addClass("colors").val("000000");
+var button = $("<input>").attr("type", "button").attr("value", "X").addClass("button").click(function(){ $(this).parent().remove() });
+$("<div>").append(input).append("&nbsp;").append(color).append("&nbsp;").append(button).appendTo("#calendarcategories");
+color.miniColors({ colorValues:(rcmail.env.mscolors || []) });
+$("#rcmfd_new_category").val("");
+}
+}');
+$this->rc->output->add_script('$("#rcmfd_new_category").keypress(function(event){
+if (event.which == 13) {
+rcube_calendar_add_category();
+event.preventDefault();
+}
+});
+', 'docready');
+// load miniColors js/css files
+jqueryui::miniColors();
+}
+// virtual birthdays calendar
+if (!isset($no_override['calendar_contact_birthdays'])) {
+$p['blocks']['birthdays']['name'] = $this->gettext('birthdayscalendar');
+if (!$p['current']) {
+$p['blocks']['birthdays']['content'] = true;
+return $p;
+}
+$field_id = 'rcmfd_contact_birthdays';
+$input    = new html_checkbox(array('name' => '_contact_birthdays', 'id' => $field_id, 'value' => 1, 'onclick' => '$(".calendar_birthday_props").prop("disabled",!this.checked)'));
+$p['blocks']['birthdays']['options']['contact_birthdays'] = array(
+'title'   => html::label($field_id, $this->gettext('displaybirthdayscalendar')),
+'content' => $input->show($this->rc->config->get('calendar_contact_birthdays')?1:0),
+);
+$input_attrib = array(
+'class' => 'calendar_birthday_props',
+'disabled' => !$this->rc->config->get('calendar_contact_birthdays'),
+);
+$sources = array();
+$checkbox = new html_checkbox(array('name' => '_birthday_adressbooks[]') + $input_attrib);
+foreach ($this->rc->get_address_sources(false, true) as $source) {
+$active = in_array($source['id'], (array)$this->rc->config->get('calendar_birthday_adressbooks', array())) ? $source['id'] : '';
+$sources[] = html::label(null, $checkbox->show($active, array('value' => $source['id'])) . '&nbsp;' . rcube::Q($source['realname'] ?: $source['name']));
+}
+$p['blocks']['birthdays']['options']['birthday_adressbooks'] = array(
+'title'   => rcube::Q($this->gettext('birthdayscalendarsources')),
+'content' => join(html::br(), $sources),
+);
+$field_id = 'rcmfd_birthdays_alarm';
+$select_type = new html_select(array('name' => '_birthdays_alarm_type', 'id' => $field_id) + $input_attrib);
+$select_type->add($this->gettext('none'), '');
+foreach ($this->driver->alarm_types as $type) {
+$select_type->add($this->rc->gettext(strtolower("alarm{$type}option"), 'libcalendaring'), $type);
+}
+$input_value = new html_inputfield(array('name' => '_birthdays_alarm_value', 'id' => $field_id . 'value', 'size' => 3) + $input_attrib);
+$select_offset = new html_select(array('name' => '_birthdays_alarm_offset', 'id' => $field_id . 'offset') + $input_attrib);
+foreach (array('-M','-H','-D') as $trigger)
+$select_offset->add($this->rc->gettext('trigger' . $trigger, 'libcalendaring'), $trigger);
+$preset = libcalendaring::parse_alarm_value($this->rc->config->get('calendar_birthdays_alarm_offset', '-1D'));
+$p['blocks']['birthdays']['options']['birthdays_alarmoffset'] = array(
+'title' => html::label($field_id . 'value', rcube::Q($this->gettext('showalarms'))),
+'content' => $select_type->show($this->rc->config->get('calendar_birthdays_alarm_type', '')) . ' ' . $input_value->show($preset[0]) . '&nbsp;' . $select_offset->show($preset[1]),
+);
+}
+return $p;
+}
+/**
+* Handler for preferences_save hook.
+* Executed on Calendar settings form submit.
+*
+* @param array Original parameters
+* @return array Modified parameters
+*/
+function preferences_save($p)
+{
+if ($p['section'] == 'calendar') {
+$this->load_driver();
+// compose default alarm preset value
+$alarm_offset  = rcube_utils::get_input_value('_alarm_offset', rcube_utils::INPUT_POST);
+$alarm_value   = rcube_utils::get_input_value('_alarm_value', rcube_utils::INPUT_POST);
+$default_alarm = $alarm_offset[0] . intval($alarm_value) . $alarm_offset[1];
+$birthdays_alarm_offset = rcube_utils::get_input_value('_birthdays_alarm_offset', rcube_utils::INPUT_POST);
+$birthdays_alarm_value  = rcube_utils::get_input_value('_birthdays_alarm_value', rcube_utils::INPUT_POST);
+$birthdays_alarm_value  = $birthdays_alarm_offset[0] . intval($birthdays_alarm_value) . $birthdays_alarm_offset[1];
+$p['prefs'] = array(
+'calendar_default_view' => rcube_utils::get_input_value('_default_view', rcube_utils::INPUT_POST),
+'calendar_timeslots'    => intval(rcube_utils::get_input_value('_timeslots', rcube_utils::INPUT_POST)),
+'calendar_first_day'    => intval(rcube_utils::get_input_value('_first_day', rcube_utils::INPUT_POST)),
+'calendar_first_hour'   => intval(rcube_utils::get_input_value('_first_hour', rcube_utils::INPUT_POST)),
+'calendar_work_start'   => intval(rcube_utils::get_input_value('_work_start', rcube_utils::INPUT_POST)),
+'calendar_work_end'     => intval(rcube_utils::get_input_value('_work_end', rcube_utils::INPUT_POST)),
+'calendar_event_coloring'       => intval(rcube_utils::get_input_value('_event_coloring', rcube_utils::INPUT_POST)),
+'calendar_default_alarm_type'   => rcube_utils::get_input_value('_alarm_type', rcube_utils::INPUT_POST),
+'calendar_default_alarm_offset' => $default_alarm,
+'calendar_default_calendar'     => rcube_utils::get_input_value('_default_calendar', rcube_utils::INPUT_POST),
+'calendar_date_format' => null,  // clear previously saved values
+'calendar_time_format' => null,
+'calendar_contact_birthdays'    => rcube_utils::get_input_value('_contact_birthdays', rcube_utils::INPUT_POST) ? true : false,
+'calendar_birthday_adressbooks' => (array) rcube_utils::get_input_value('_birthday_adressbooks', rcube_utils::INPUT_POST),
+'calendar_birthdays_alarm_type'   => rcube_utils::get_input_value('_birthdays_alarm_type', rcube_utils::INPUT_POST),
+'calendar_birthdays_alarm_offset' => $birthdays_alarm_value ?: null,
+'calendar_itip_after_action'      => intval(rcube_utils::get_input_value('_after_action', rcube_utils::INPUT_POST)),
+);
+if ($p['prefs']['calendar_itip_after_action'] == 4) {
+$p['prefs']['calendar_itip_after_action'] = rcube_utils::get_input_value('_after_action_folder', rcube_utils::INPUT_POST, true);
+}
+// categories
+if (!$this->driver->nocategories) {
+$old_categories = $new_categories = array();
+foreach ($this->driver->list_categories() as $name => $color) {
+$old_categories[md5($name)] = $name;
+}
+$categories = (array) rcube_utils::get_input_value('_categories', rcube_utils::INPUT_POST);
+$colors     = (array) rcube_utils::get_input_value('_colors', rcube_utils::INPUT_POST);
+foreach ($categories as $key => $name) {
+$color = preg_replace('/^#/', '', strval($colors[$key]));
+// rename categories in existing events -> driver's job
+if ($oldname = $old_categories[$key]) {
+$this->driver->replace_category($oldname, $name, $color);
+unset($old_categories[$key]);
+}
+else
+$this->driver->add_category($name, $color);
+$new_categories[$name] = $color;
+}
+// these old categories have been removed, alter events accordingly -> driver's job
+foreach ((array)$old_categories[$key] as $key => $name) {
+$this->driver->remove_category($name);
+}
+$p['prefs']['calendar_categories'] = $new_categories;
+}
+}
+return $p;
+}
+/**
+* Dispatcher for calendar actions initiated by the client
+*/
+function calendar_action()
+{
+$action = rcube_utils::get_input_value('action', rcube_utils::INPUT_GPC);
+$cal    = rcube_utils::get_input_value('c', rcube_utils::INPUT_GPC);
+$success = $reload = false;
+if (isset($cal['showalarms']))
+$cal['showalarms'] = intval($cal['showalarms']);
+switch ($action) {
+case "form-new":
+case "form-edit":
+echo $this->ui->calendar_editform($action, $cal);
+exit;
+case "new":
+$success = $this->driver->create_calendar($cal);
+$reload = true;
+break;
+case "edit":
+$success = $this->driver->edit_calendar($cal);
+$reload = true;
+break;
+case "delete":
+if ($success = $this->driver->delete_calendar($cal))
+$this->rc->output->command('plugin.destroy_source', array('id' => $cal['id']));
+break;
+case "subscribe":
+if (!$this->driver->subscribe_calendar($cal))
+$this->rc->output->show_message($this->gettext('errorsaving'), 'error');
+else {
+$calendars = $this->driver->list_calendars();
+$calendar  = $calendars[$cal['id']];
+// find parent folder and check if it's a "user calendar"
+// if it's also activated we need to refresh it (#5340)
+while ($calendar['parent']) {
+if (isset($calendars[$calendar['parent']]))
+$calendar = $calendars[$calendar['parent']];
+else
+break;
+}
+if ($calendar['id'] != $cal['id'] && $calendar['active'] && $calendar['group'] == "other user")
+$this->rc->output->command('plugin.refresh_source', $calendar['id']);
+}
+return;
+case "search":
+$results    = array();
+$color_mode = $this->rc->config->get('calendar_event_coloring', $this->defaults['calendar_event_coloring']);
+$query      = rcube_utils::get_input_value('q', rcube_utils::INPUT_GPC);
+$source     = rcube_utils::get_input_value('source', rcube_utils::INPUT_GPC);
+foreach ((array) $this->driver->search_calendars($query, $source) as $id => $prop) {
+$editname = $prop['editname'];
+unset($prop['editname']);  // force full name to be displayed
+$prop['active'] = false;
+// let the UI generate HTML and CSS representation for this calendar
+$html = $this->ui->calendar_list_item($id, $prop, $jsenv);
+$cal = $jsenv[$id];
+$cal['editname'] = $editname;
+$cal['html'] = $html;
+if (!empty($prop['color']))
+$cal['css'] = $this->ui->calendar_css_classes($id, $prop, $color_mode);
+$results[] = $cal;
+}
+// report more results available
+if ($this->driver->search_more_results)
+$this->rc->output->show_message('autocompletemore', 'info');
+$this->rc->output->command('multi_thread_http_response', $results, rcube_utils::get_input_value('_reqid', rcube_utils::INPUT_GPC));
+return;
+}
+if ($success)
+$this->rc->output->show_message('successfullysaved', 'confirmation');
+else {
+$error_msg = $this->gettext('errorsaving') . ($this->driver->last_error ? ': ' . $this->driver->last_error :'');
+$this->rc->output->show_message($error_msg, 'error');
+}
+$this->rc->output->command('plugin.unlock_saving');
+if ($success && $reload)
+$this->rc->output->command('plugin.reload_view');
+}
+/**
+* Dispatcher for event actions initiated by the client
+*/
+function event_action()
+{
+$action = rcube_utils::get_input_value('action', rcube_utils::INPUT_GPC);
+$event  = rcube_utils::get_input_value('e', rcube_utils::INPUT_POST, true);
+$success = $reload = $got_msg = false;
+// force notify if hidden + active
+if ((int)$this->rc->config->get('calendar_itip_send_option', $this->defaults['calendar_itip_send_option']) === 1)
+$event['_notify'] = 1;
+// read old event data in order to find changes
+if (($event['_notify'] || $event['_decline']) && $action != 'new') {
+$old = $this->driver->get_event($event);
+// load main event if savemode is 'all' or if deleting 'future' events
+if (($event['_savemode'] == 'all' || ($event['_savemode'] == 'future' && $action == 'remove' && !$event['_decline'])) && $old['recurrence_id']) {
+$old['id'] = $old['recurrence_id'];
+$old = $this->driver->get_event($old);
+}
+}
+switch ($action) {
+case "new":
+// create UID for new event
+$event['uid'] = $this->generate_uid();
+$this->write_preprocess($event, $action);
+if ($success = $this->driver->new_event($event)) {
+$event['id'] = $event['uid'];
+$event['_savemode'] = 'all';
+$this->cleanup_event($event);
+$this->event_save_success($event, null, $action, true);
+}
+$reload = $success && $event['recurrence'] ? 2 : 1;
+break;
+case "edit":
+$this->write_preprocess($event, $action);
+if ($success = $this->driver->edit_event($event)) {
+$this->cleanup_event($event);
+$this->event_save_success($event, $old, $action, $success);
+}
+$reload = $success && ($event['recurrence'] || $event['_savemode'] || $event['_fromcalendar']) ? 2 : 1;
+break;
+case "resize":
+$this->write_preprocess($event, $action);
+if ($success = $this->driver->resize_event($event)) {
+$this->event_save_success($event, $old, $action, $success);
+}
+$reload = $event['_savemode'] ? 2 : 1;
+break;
+case "move":
+$this->write_preprocess($event, $action);
+if ($success = $this->driver->move_event($event)) {
+$this->event_save_success($event, $old, $action, $success);
+}
+$reload  = $success && $event['_savemode'] ? 2 : 1;
+break;
+case "remove":
+// remove previous deletes
+$undo_time = $this->driver->undelete ? $this->rc->config->get('undo_timeout', 0) : 0;
+$this->rc->session->remove('calendar_event_undo');
+// search for event if only UID is given
+if (!isset($event['calendar']) && $event['uid']) {
+if (!($event = $this->driver->get_event($event, calendar_driver::FILTER_WRITEABLE))) {
+break;
+}
+$undo_time = 0;
+}
+$success = $this->driver->remove_event($event, $undo_time < 1);
+$reload = (!$success || $event['_savemode']) ? 2 : 1;
+if ($undo_time > 0 && $success) {
+$_SESSION['calendar_event_undo'] = array('ts' => time(), 'data' => $event);
+// display message with Undo link.
+$msg = html::span(null, $this->gettext('successremoval'))
+. ' ' . html::a(array('onclick' => sprintf("%s.http_request('event', 'action=undo', %s.display_message('', 'loading'))",
+rcmail_output::JS_OBJECT_NAME, rcmail_output::JS_OBJECT_NAME)), $this->gettext('undo'));
+$this->rc->output->show_message($msg, 'confirmation', null, true, $undo_time);
+$got_msg = true;
+}
+else if ($success) {
+$this->rc->output->show_message('calendar.successremoval', 'confirmation');
+$got_msg = true;
+}
+// send cancellation for the main event
+if ($event['_savemode'] == 'all') {
+unset($old['_instance'], $old['recurrence_date'], $old['recurrence_id']);
+}
+// send an update for the main event's recurrence rule instead of a cancellation message
+else if ($event['_savemode'] == 'future' && $success !== false && $success !== true) {
+$event['_savemode'] = 'all';  // force event_save_success() to load master event
+$action = 'edit';
+$success = true;
+}
+// send iTIP reply that participant has declined the event
+if ($success && $event['_decline']) {
+$emails = $this->get_user_emails();
+foreach ($old['attendees'] as $i => $attendee) {
+if ($attendee['role'] == 'ORGANIZER')
+$organizer = $attendee;
+else if ($attendee['email'] && in_array(strtolower($attendee['email']), $emails)) {
+$old['attendees'][$i]['status'] = 'DECLINED';
+$reply_sender = $attendee['email'];
+}
+}
+if ($event['_savemode'] == 'future' && $event['id'] != $old['id']) {
+$old['thisandfuture'] = true;
+}
+$itip = $this->load_itip();
+$itip->set_sender_email($reply_sender);
+if ($organizer && $itip->send_itip_message($old, 'REPLY', $organizer, 'itipsubjectdeclined', 'itipmailbodydeclined'))
+$this->rc->output->command('display_message', $this->gettext(array('name' => 'sentresponseto', 'vars' => array('mailto' => $organizer['name'] ? $organizer['name'] : $organizer['email']))), 'confirmation');
+else
+$this->rc->output->command('display_message', $this->gettext('itipresponseerror'), 'error');
+}
+else if ($success) {
+$this->event_save_success($event, $old, $action, $success);
+}
+break;
+case "undo":
+// Restore deleted event
+$event  = $_SESSION['calendar_event_undo']['data'];
+if ($event)
+$success = $this->driver->restore_event($event);
+if ($success) {
+$this->rc->session->remove('calendar_event_undo');
+$this->rc->output->show_message('calendar.successrestore', 'confirmation');
+$got_msg = true;
+$reload = 2;
+}
+break;
+case "rsvp":
+$itip_sending  = $this->rc->config->get('calendar_itip_send_option', $this->defaults['calendar_itip_send_option']);
+$status        = rcube_utils::get_input_value('status', rcube_utils::INPUT_POST);
+$attendees     = rcube_utils::get_input_value('attendees', rcube_utils::INPUT_POST);
+$reply_comment = $event['comment'];
+$this->write_preprocess($event, 'edit');
+$ev = $this->driver->get_event($event);
+$ev['attendees'] = $event['attendees'];
+$ev['free_busy'] = $event['free_busy'];
+$ev['_savemode'] = $event['_savemode'];
+$ev['comment']   = $reply_comment;
+// send invitation to delegatee + add it as attendee
+if ($status == 'delegated' && $event['to']) {
+$itip = $this->load_itip();
+if ($itip->delegate_to($ev, $event['to'], (bool)$event['rsvp'], $attendees)) {
+$this->rc->output->show_message('calendar.itipsendsuccess', 'confirmation');
+$noreply = false;
+}
+}
+$event = $ev;
+// compose a list of attendees affected by this change
+$updated_attendees = array_filter(array_map(function($j) use ($event) {
+return $event['attendees'][$j];
+}, $attendees));
+if ($success = $this->driver->edit_rsvp($event, $status, $updated_attendees)) {
+$noreply = rcube_utils::get_input_value('noreply', rcube_utils::INPUT_GPC);
+$noreply = intval($noreply) || $status == 'needs-action' || $itip_sending === 0;
+$reload  = $event['calendar'] != $ev['calendar'] || $event['recurrence'] ? 2 : 1;
+$organizer = null;
+$emails = $this->get_user_emails();
+foreach ($event['attendees'] as $i => $attendee) {
+if ($attendee['role'] == 'ORGANIZER') {
+$organizer = $attendee;
+}
+else if ($attendee['email'] && in_array(strtolower($attendee['email']), $emails)) {
+$reply_sender = $attendee['email'];
+}
+}
+if (!$noreply) {
+$itip = $this->load_itip();
+$itip->set_sender_email($reply_sender);
+$event['thisandfuture'] = $event['_savemode'] == 'future';
+if ($organizer && $itip->send_itip_message($event, 'REPLY', $organizer, 'itipsubject' . $status, 'itipmailbody' . $status))
+$this->rc->output->command('display_message', $this->gettext(array('name' => 'sentresponseto', 'vars' => array('mailto' => $organizer['name'] ? $organizer['name'] : $organizer['email']))), 'confirmation');
+else
+$this->rc->output->command('display_message', $this->gettext('itipresponseerror'), 'error');
+}
+// refresh all calendars
+if ($event['calendar'] != $ev['calendar']) {
+$this->rc->output->command('plugin.refresh_calendar', array('source' => null, 'refetch' => true));
+$reload = 0;
+}
+}
+break;
+case "dismiss":
+$event['ids'] = explode(',', $event['id']);
+$plugin = $this->rc->plugins->exec_hook('dismiss_alarms', $event);
+$success = $plugin['success'];
+foreach ($event['ids'] as $id) {
+if (strpos($id, 'cal:') === 0)
+$success |= $this->driver->dismiss_alarm(substr($id, 4), $event['snooze']);
+}
+break;
+case "changelog":
+$data = $this->driver->get_event_changelog($event);
+if (is_array($data) && !empty($data)) {
+$lib = $this->lib;
+$dtformat = $this->rc->config->get('date_format') . ' ' . $this->rc->config->get('time_format');
+array_walk($data, function(&$change) use ($lib, $dtformat) {
+if ($change['date']) {
+$dt = $lib->adjust_timezone($change['date']);
+if ($dt instanceof DateTime)
+$change['date'] = $this->rc->format_date($dt, $dtformat, false);
+}
+});
+$this->rc->output->command('plugin.render_event_changelog', $data);
+}
+else {
+$this->rc->output->command('plugin.render_event_changelog', false);
+}
+$got_msg = true;
+$reload = false;
+break;
+case "diff":
+$data = $this->driver->get_event_diff($event, $event['rev1'], $event['rev2']);
+if (is_array($data)) {
+// convert some properties, similar to self::_client_event()
+$lib = $this->lib;
+array_walk($data['changes'], function(&$change, $i) use ($event, $lib) {
+// convert date cols
+foreach (array('start','end','created','changed') as $col) {
+if ($change['property'] == $col) {
+$change['old'] = $lib->adjust_timezone($change['old'], strlen($change['old']) == 10)->format('c');
+$change['new'] = $lib->adjust_timezone($change['new'], strlen($change['new']) == 10)->format('c');
+}
+}
+// create textual representation for alarms and recurrence
+if ($change['property'] == 'alarms') {
+if (is_array($change['old']))
+$change['old_'] = libcalendaring::alarm_text($change['old']);
+if (is_array($change['new']))
+$change['new_'] = libcalendaring::alarm_text(array_merge((array)$change['old'], $change['new']));
+}
+if ($change['property'] == 'recurrence') {
+if (is_array($change['old']))
+$change['old_'] = $lib->recurrence_text($change['old']);
+if (is_array($change['new']))
+$change['new_'] = $lib->recurrence_text(array_merge((array)$change['old'], $change['new']));
+}
+if ($change['property'] == 'attachments') {
+if (is_array($change['old']))
+$change['old']['classname'] = rcube_utils::file2class($change['old']['mimetype'], $change['old']['name']);
+if (is_array($change['new']))
+$change['new']['classname'] = rcube_utils::file2class($change['new']['mimetype'], $change['new']['name']);
+}
+// compute a nice diff of description texts
+if ($change['property'] == 'description') {
+$change['diff_'] = libkolab::html_diff($change['old'], $change['new']);
+}
+});
+$this->rc->output->command('plugin.event_show_diff', $data);
+}
+else {
+$this->rc->output->command('display_message', $this->gettext('objectdiffnotavailable'), 'error');
+}
+$got_msg = true;
+$reload = false;
+break;
+case "show":
+if ($event = $this->driver->get_event_revison($event, $event['rev'])) {
+$this->rc->output->command('plugin.event_show_revision', $this->_client_event($event));
+}
+else {
+$this->rc->output->command('display_message', $this->gettext('objectnotfound'), 'error');
+}
+$got_msg = true;
+$reload = false;
+break;
+case "restore":
+if ($success = $this->driver->restore_event_revision($event, $event['rev'])) {
+$_event = $this->driver->get_event($event);
+$reload = $_event['recurrence'] ? 2 : 1;
+$this->rc->output->command('display_message', $this->gettext(array('name' => 'objectrestoresuccess', 'vars' => array('rev' => $event['rev']))), 'confirmation');
+$this->rc->output->command('plugin.close_history_dialog');
+}
+else {
+$this->rc->output->command('display_message', $this->gettext('objectrestoreerror'), 'error');
+$reload = 0;
+}
+$got_msg = true;
+break;
+}
+// show confirmation/error message
+if (!$got_msg) {
+if ($success)
+$this->rc->output->show_message('successfullysaved', 'confirmation');
+else
+$this->rc->output->show_message('calendar.errorsaving', 'error');
+}
+// unlock client
+$this->rc->output->command('plugin.unlock_saving');
+// update event object on the client or trigger a complete refretch if too complicated
+if ($reload) {
+$args = array('source' => $event['calendar']);
+if ($reload > 1)
+$args['refetch'] = true;
+else if ($success && $action != 'remove')
+$args['update'] = $this->_client_event($this->driver->get_event($event), true);
+$this->rc->output->command('plugin.refresh_calendar', $args);
+}
+}
+/**
+* Helper method sending iTip notifications after successful event updates
+*/
+private function event_save_success(&$event, $old, $action, $success)
+{
+// $success is a new event ID
+if ($success !== true) {
+// send update notification on the main event
+if ($event['_savemode'] == 'future' && $event['_notify'] && $old['attendees'] && $old['recurrence_id']) {
+$master = $this->driver->get_event(array('id' => $old['recurrence_id'], 'calendar' => $old['calendar']), 0, true);
+unset($master['_instance'], $master['recurrence_date']);
+$sent = $this->notify_attendees($master, null, $action, $event['_comment'], false);
+if ($sent < 0)
+$this->rc->output->show_message('calendar.errornotifying', 'error');
+$event['attendees'] = $master['attendees'];  // this tricks us into the next if clause
+}
+// delete old reference if saved as new
+if ($event['_savemode'] == 'future' || $event['_savemode'] == 'new') {
+$old = null;
+}
+$event['id'] = $success;
+$event['_savemode'] = 'all';
+}
+// send out notifications
+if ($event['_notify'] && ($event['attendees'] || $old['attendees'])) {
+$_savemode = $event['_savemode'];
+// send notification for the main event when savemode is 'all'
+if ($action != 'remove' && $_savemode == 'all' && ($event['recurrence_id'] || $old['recurrence_id'] || ($old && $old['id'] != $event['id']))) {
+$event['id'] = $event['recurrence_id'] ?: ($old['recurrence_id'] ?: $old['id']);
+$event = $this->driver->get_event($event, 0, true);
+unset($event['_instance'], $event['recurrence_date']);
+}
+else {
+// make sure we have the complete record
+$event = $action == 'remove' ? $old : $this->driver->get_event($event, 0, true);
+}
+$event['_savemode'] = $_savemode;
+if ($old) {
+$old['thisandfuture'] = $_savemode == 'future';
+}
+// only notify if data really changed (TODO: do diff check on client already)
+if (!$old || $action == 'remove' || self::event_diff($event, $old)) {
+$sent = $this->notify_attendees($event, $old, $action, $event['_comment']);
+if ($sent > 0)
+$this->rc->output->show_message('calendar.itipsendsuccess', 'confirmation');
+else if ($sent < 0)
+$this->rc->output->show_message('calendar.errornotifying', 'error');
+}
+}
+}
+/**
+* Handler for load-requests from fullcalendar
+* This will return pure JSON formatted output
+*/
+function load_events()
+{
+$events = $this->driver->load_events(
+rcube_utils::get_input_value('start', rcube_utils::INPUT_GET),
+rcube_utils::get_input_value('end', rcube_utils::INPUT_GET),
+($query = rcube_utils::get_input_value('q', rcube_utils::INPUT_GET)),
+rcube_utils::get_input_value('source', rcube_utils::INPUT_GET)
+);
+echo $this->encode($events, !empty($query));
+exit;
+}
+/**
+* Handler for requests fetching event counts for calendars
+*/
+public function count_events()
+{
+// don't update session on these requests (avoiding race conditions)
+$this->rc->session->nowrite = true;
+$start = rcube_utils::get_input_value('start', rcube_utils::INPUT_GET);
+if (!$start) {
+$start = new DateTime('today 00:00:00', $this->timezone);
+$start = $start->format('U');
+}
+$counts = $this->driver->count_events(
+rcube_utils::get_input_value('source', rcube_utils::INPUT_GET),
+$start,
+rcube_utils::get_input_value('end', rcube_utils::INPUT_GET)
+);
+$this->rc->output->command('plugin.update_counts', array('counts' => $counts));
+}
+/**
+* Load event data from an iTip message attachment
+*/
+public function itip_events($msgref)
+{
+$path = explode('/', $msgref);
+$msg = array_pop($path);
+$mbox = join('/', $path);
+list($uid, $mime_id) = explode('#', $msg);
+$events = array();
+if ($event = $this->lib->mail_get_itip_object($mbox, $uid, $mime_id, 'event')) {
+$partstat = 'NEEDS-ACTION';
+/*
+$user_emails = $this->lib->get_user_emails();
+foreach ($event['attendees'] as $attendee) {
+if (in_array($attendee['email'], $user_emails)) {
+$partstat = $attendee['status'];
+break;
+}
+}
+*/
+$event['id'] = $event['uid'];
+$event['temporary'] = true;
+$event['readonly'] = true;
+$event['calendar'] = '--invitation--itip';
+$event['className'] = 'fc-invitation-' . strtolower($partstat);
+$event['_mbox'] = $mbox;
+$event['_uid']  = $uid;
+$event['_part'] = $mime_id;
+$events[] = $this->_client_event($event, true);
+// add recurring instances
+if (!empty($event['recurrence'])) {
+foreach ($this->driver->get_recurring_events($event, $event['start']) as $recurring) {
+$recurring['temporary'] = true;
+$recurring['readonly'] = true;
+$recurring['calendar'] = '--invitation--itip';
+$events[] = $this->_client_event($recurring, true);
+}
+}
+}
+return $events;
+}
+/**
+* Handler for keep-alive requests
+* This will check for updated data in active calendars and sync them to the client
+*/
+public function refresh($attr)
+{
+// refresh the entire calendar every 10th time to also sync deleted events
+if (rand(0,10) == 10) {
+$this->rc->output->command('plugin.refresh_calendar', array('refetch' => true));
+return;
+}
+$counts = array();
+foreach ($this->driver->list_calendars(calendar_driver::FILTER_ACTIVE) as $cal) {
+$events = $this->driver->load_events(
+rcube_utils::get_input_value('start', rcube_utils::INPUT_GPC),
+rcube_utils::get_input_value('end', rcube_utils::INPUT_GPC),
+rcube_utils::get_input_value('q', rcube_utils::INPUT_GPC),
+$cal['id'],
+1,
+$attr['last']
+);
+foreach ($events as $event) {
+$this->rc->output->command('plugin.refresh_calendar',
+array('source' => $cal['id'], 'update' => $this->_client_event($event)));
+}
+// refresh count for this calendar
+if ($cal['counts']) {
+$today = new DateTime('today 00:00:00', $this->timezone);
+$counts += $this->driver->count_events($cal['id'], $today->format('U'));
+}
+}
+if (!empty($counts)) {
+$this->rc->output->command('plugin.update_counts', array('counts' => $counts));
+}
+}
+/**
+* Handler for pending_alarms plugin hook triggered by the calendar module on keep-alive requests.
+* This will check for pending notifications and pass them to the client
+*/
+public function pending_alarms($p)
+{
+$this->load_driver();
+$time = $p['time'] ?: time();
+if ($alarms = $this->driver->pending_alarms($time)) {
+foreach ($alarms as $alarm) {
+$alarm['id'] = 'cal:' . $alarm['id'];  // prefix ID with cal:
+$p['alarms'][] = $alarm;
+}
+}
+// get alarms for birthdays calendar
+if ($this->rc->config->get('calendar_contact_birthdays') && $this->rc->config->get('calendar_birthdays_alarm_type') == 'DISPLAY') {
+$cache = $this->rc->get_cache('calendar.birthdayalarms', 'db');
+foreach ($this->driver->load_birthday_events($time, $time + 86400 * 60) as $e) {
+$alarm = libcalendaring::get_next_alarm($e);
+// overwrite alarm time with snooze value (or null if dismissed)
+if ($dismissed = $cache->get($e['id']))
+$alarm['time'] = $dismissed['notifyat'];
+// add to list if alarm is set
+if ($alarm && $alarm['time'] && $alarm['time'] <= $time) {
+$e['id'] = 'cal:bday:' . $e['id'];
+$e['notifyat'] = $alarm['time'];
+$p['alarms'][] = $e;
+}
+}
+}
+return $p;
+}
+/**
+* Handler for alarm dismiss hook triggered by libcalendaring
+*/
+public function dismiss_alarms($p)
+{
+$this->load_driver();
+foreach ((array)$p['ids'] as $id) {
+if (strpos($id, 'cal:bday:') === 0) {
+$p['success'] |= $this->driver->dismiss_birthday_alarm(substr($id, 9), $p['snooze']);
+}
+else if (strpos($id, 'cal:') === 0) {
+$p['success'] |= $this->driver->dismiss_alarm(substr($id, 4), $p['snooze']);
+}
+}
+return $p;
+}
+/**
+* Handler for check-recent requests which are accidentally sent to calendar
+*/
+function check_recent()
+{
+// NOP
+$this->rc->output->send();
+}
+/**
+* Hook triggered when a contact is saved
+*/
+function contact_update($p)
+{
+// clear birthdays calendar cache
+if (!empty($p['record']['birthday'])) {
+$cache = $this->rc->get_cache('calendar.birthdays', 'db');
+$cache->remove();
+}
+}
+/**
+*
+*/
+function import_events()
+{
+// Upload progress update
+if (!empty($_GET['_progress'])) {
+$this->rc->upload_progress();
+}
+@set_time_limit(0);
+// process uploaded file if there is no error
+$err = $_FILES['_data']['error'];
+if (!$err && $_FILES['_data']['tmp_name']) {
+$calendar   = rcube_utils::get_input_value('calendar', rcube_utils::INPUT_GPC);
+$rangestart = $_REQUEST['_range'] ? date_create("now -" . intval($_REQUEST['_range']) . " months") : 0;
+// extract zip file
+if ($_FILES['_data']['type'] == 'application/zip') {
+$count = 0;
+if (class_exists('ZipArchive', false)) {
+$zip = new ZipArchive();
+if ($zip->open($_FILES['_data']['tmp_name'])) {
+$randname = uniqid('zip-' . session_id(), true);
+$tmpdir = slashify($this->rc->config->get('temp_dir', sys_get_temp_dir())) . $randname;
+mkdir($tmpdir, 0700);
+// extract each ical file from the archive and import it
+for ($i = 0; $i < $zip->numFiles; $i++) {
+$filename = $zip->getNameIndex($i);
+if (preg_match('/\.ics$/i', $filename)) {
+$tmpfile = $tmpdir . '/' . basename($filename);
+if (copy('zip://' . $_FILES['_data']['tmp_name'] . '#'.$filename, $tmpfile)) {
+$count += $this->import_from_file($tmpfile, $calendar, $rangestart, $errors);
+unlink($tmpfile);
+}
+}
+}
+rmdir($tmpdir);
+$zip->close();
+}
+else {
+$errors = 1;
+$msg = 'Failed to open zip file.';
+}
+}
+else {
+$errors = 1;
+$msg = 'Zip files are not supported for import.';
+}
+}
+else {
+// attempt to import teh uploaded file directly
+$count = $this->import_from_file($_FILES['_data']['tmp_name'], $calendar, $rangestart, $errors);
+}
+if ($count) {
+$this->rc->output->command('display_message', $this->gettext(array('name' => 'importsuccess', 'vars' => array('nr' => $count))), 'confirmation');
+$this->rc->output->command('plugin.import_success', array('source' => $calendar, 'refetch' => true));
+}
+else if (!$errors) {
+$this->rc->output->command('display_message', $this->gettext('importnone'), 'notice');
+$this->rc->output->command('plugin.import_success', array('source' => $calendar));
+}
+else {
+$this->rc->output->command('plugin.import_error', array('message' => $this->gettext('importerror') . ($msg ? ': ' . $msg : '')));
+}
+}
+else {
+if ($err == UPLOAD_ERR_INI_SIZE || $err == UPLOAD_ERR_FORM_SIZE) {
+$msg = $this->rc->gettext(array('name' => 'filesizeerror', 'vars' => array(
+'size' => $this->rc->show_bytes(parse_bytes(ini_get('upload_max_filesize'))))));
+}
+else {
+$msg = $this->rc->gettext('fileuploaderror');
+}
+$this->rc->output->command('plugin.import_error', array('message' => $msg));
+}
+$this->rc->output->send('iframe');
+}
+/**
+* Helper function to parse and import a single .ics file
+*/
+private function import_from_file($filepath, $calendar, $rangestart, &$errors)
+{
+$user_email = $this->rc->user->get_username();
+$ical = $this->get_ical();
+$errors = !$ical->fopen($filepath);
+$count = $i = 0;
+foreach ($ical as $event) {
+// keep the browser connection alive on long import jobs
+if (++$i > 100 && $i % 100 == 0) {
+echo "<!-- -->";
+ob_flush();
+}
+// TODO: correctly handle recurring events which start before $rangestart
+if ($event['end'] < $rangestart && (!$event['recurrence'] || ($event['recurrence']['until'] && $event['recurrence']['until'] < $rangestart)))
+continue;
+$event['_owner'] = $user_email;
+$event['calendar'] = $calendar;
+if ($this->driver->new_event($event)) {
+$count++;
+}
+else {
+$errors++;
+}
+}
+return $count;
+}
+/**
+* Construct the ics file for exporting events to iCalendar format;
+*/
+function export_events($terminate = true)
+{
+$start = rcube_utils::get_input_value('start', rcube_utils::INPUT_GET);
+$end   = rcube_utils::get_input_value('end', rcube_utils::INPUT_GET);
+if (!isset($start))
+$start = 'today -1 year';
+if (!is_numeric($start))
+$start = strtotime($start . ' 00:00:00');
+if (!$end)
+$end = 'today +10 years';
+if (!is_numeric($end))
+$end = strtotime($end . ' 23:59:59');
+$event_id    = rcube_utils::get_input_value('id', rcube_utils::INPUT_GET);
+$attachments = rcube_utils::get_input_value('attachments', rcube_utils::INPUT_GET);
+$calid = $filename = rcube_utils::get_input_value('source', rcube_utils::INPUT_GET);
+$calendars = $this->driver->list_calendars();
+$events = array();
+if ($calendars[$calid]) {
+$filename = $calendars[$calid]['name'] ? $calendars[$calid]['name'] : $calid;
+$filename = asciiwords(html_entity_decode($filename));  // to 7bit ascii
+if (!empty($event_id)) {
+if ($event = $this->driver->get_event(array('calendar' => $calid, 'id' => $event_id), 0, true)) {
+if ($event['recurrence_id']) {
+$event = $this->driver->get_event(array('calendar' => $calid, 'id' => $event['recurrence_id']), 0, true);
+}
+$events = array($event);
+$filename = asciiwords($event['title']);
+if (empty($filename))
+$filename = 'event';
+}
+}
+else {
+$events = $this->driver->load_events($start, $end, null, $calid, 0);
+if (empty($filename))
+$filename = $calid;
+}
+}
+header("Content-Type: text/calendar");
+header("Content-Disposition: inline; filename=".$filename.'.ics');
+$this->get_ical()->export($events, '', true, $attachments ? array($this->driver, 'get_attachment_body') : null);
+if ($terminate)
+exit;
+}
+/**
+* Handler for iCal feed requests
+*/
+function ical_feed_export()
+{
+$session_exists = !empty($_SESSION['user_id']);
+// process HTTP auth info
+if (!empty($_SERVER['PHP_AUTH_USER']) && isset($_SERVER['PHP_AUTH_PW'])) {
+$_POST['_user'] = $_SERVER['PHP_AUTH_USER']; // used for rcmail::autoselect_host()
+$auth = $this->rc->plugins->exec_hook('authenticate', array(
+'host' => $this->rc->autoselect_host(),
+'user' => trim($_SERVER['PHP_AUTH_USER']),
+'pass' => $_SERVER['PHP_AUTH_PW'],
+'cookiecheck' => true,
+'valid' => true,
+));
+if ($auth['valid'] && !$auth['abort'])
+$this->rc->login($auth['user'], $auth['pass'], $auth['host']);
+}
+// require HTTP auth
+if (empty($_SESSION['user_id'])) {
+header('WWW-Authenticate: Basic realm="Roundcube Calendar"');
+header('HTTP/1.0 401 Unauthorized');
+exit;
+}
+// decode calendar feed hash
+$format = 'ics';
+$calhash = rcube_utils::get_input_value('_cal', rcube_utils::INPUT_GET);
+if (preg_match(($suff_regex = '/\.([a-z0-9]{3,5})$/i'), $calhash, $m)) {
+$format = strtolower($m[1]);
+$calhash = preg_replace($suff_regex, '', $calhash);
+}
+if (!strpos($calhash, ':'))
+$calhash = base64_decode($calhash);
+list($user, $_GET['source']) = explode(':', $calhash, 2);
+// sanity check user
+if ($this->rc->user->get_username() == $user) {
+$this->setup();
+$this->load_driver();
+$this->export_events(false);
+}
+else {
+header('HTTP/1.0 404 Not Found');
+}
+// don't save session data
+if (!$session_exists)
+session_destroy();
+exit;
+}
+/**
+*
+*/
+function load_settings()
+{
+$this->lib->load_settings();
+$this->defaults += $this->lib->defaults;
+$settings = array();
+// configuration
+$settings['default_calendar'] = $this->rc->config->get('calendar_default_calendar');
+$settings['default_view'] = (string)$this->rc->config->get('calendar_default_view', $this->defaults['calendar_default_view']);
+$settings['date_agenda'] = (string)$this->rc->config->get('calendar_date_agenda', $this->defaults['calendar_date_agenda']);
+$settings['timeslots'] = (int)$this->rc->config->get('calendar_timeslots', $this->defaults['calendar_timeslots']);
+$settings['first_day'] = (int)$this->rc->config->get('calendar_first_day', $this->defaults['calendar_first_day']);
+$settings['first_hour'] = (int)$this->rc->config->get('calendar_first_hour', $this->defaults['calendar_first_hour']);
+$settings['work_start'] = (int)$this->rc->config->get('calendar_work_start', $this->defaults['calendar_work_start']);
+$settings['work_end'] = (int)$this->rc->config->get('calendar_work_end', $this->defaults['calendar_work_end']);
+$settings['agenda_range'] = (int)$this->rc->config->get('calendar_agenda_range', $this->defaults['calendar_agenda_range']);
+$settings['agenda_sections'] = $this->rc->config->get('calendar_agenda_sections', $this->defaults['calendar_agenda_sections']);
+$settings['event_coloring'] = (int)$this->rc->config->get('calendar_event_coloring', $this->defaults['calendar_event_coloring']);
+$settings['time_indicator'] = (int)$this->rc->config->get('calendar_time_indicator', $this->defaults['calendar_time_indicator']);
+$settings['invite_shared'] = (int)$this->rc->config->get('calendar_allow_invite_shared', $this->defaults['calendar_allow_invite_shared']);
+$settings['invitation_calendars'] = (bool)$this->rc->config->get('kolab_invitation_calendars', false);
+$settings['itip_notify'] = (int)$this->rc->config->get('calendar_itip_send_option', $this->defaults['calendar_itip_send_option']);
+// get user identity to create default attendee
+if ($this->ui->screen == 'calendar') {
+foreach ($this->rc->user->list_emails() as $rec) {
+if (!$identity)
+$identity = $rec;
+$identity['emails'][] = $rec['email'];
+$settings['identities'][$rec['identity_id']] = $rec['email'];
+}
+$identity['emails'][] = $this->rc->user->get_username();
+$settings['identity'] = array('name' => $identity['name'], 'email' => strtolower($identity['email']), 'emails' => ';' . strtolower(join(';', $identity['emails'])));
+}
+return $settings;
+}
+/**
+* Encode events as JSON
+*
+* @param  array  Events as array
+* @param  boolean Add CSS class names according to calendar and categories
+* @return string JSON encoded events
+*/
+function encode($events, $addcss = false)
+{
+$json = array();
+foreach ($events as $event) {
+$json[] = $this->_client_event($event, $addcss);
+}
+return rcube_output::json_serialize($json);
+}
+/**
+* Convert an event object to be used on the client
+*/
+private function _client_event($event, $addcss = false)
+{
+// compose a human readable strings for alarms_text and recurrence_text
+if ($event['valarms']) {
+$event['alarms_text'] = libcalendaring::alarms_text($event['valarms']);
+$event['valarms'] = libcalendaring::to_client_alarms($event['valarms']);
+}
+if ($event['recurrence']) {
+$event['recurrence_text'] = $this->lib->recurrence_text($event['recurrence']);
+$event['recurrence'] = $this->lib->to_client_recurrence($event['recurrence'], $event['allday']);
+unset($event['recurrence_date']);
+}
+foreach ((array)$event['attachments'] as $k => $attachment) {
+$event['attachments'][$k]['classname'] = rcube_utils::file2class($attachment['mimetype'], $attachment['name']);
+unset($event['attachments'][$k]['data'], $event['attachments'][$k]['content']);
+if (!$attachment['id']) {
+$event['attachments'][$k]['id'] = $k;
+}
+}
+// convert link URIs references into structs
+if (array_key_exists('links', $event)) {
+foreach ((array) $event['links'] as $i => $link) {
+if (strpos($link, 'imap://') === 0 && ($msgref = $this->driver->get_message_reference($link))) {
+$event['links'][$i] = $msgref;
+}
+}
+}
+// check for organizer in attendees list
+$organizer = null;
+foreach ((array)$event['attendees'] as $i => $attendee) {
+if ($attendee['role'] == 'ORGANIZER') {
+$organizer = $attendee;
+}
+if ($attendee['status'] == 'DELEGATED' && $attendee['rsvp'] == false) {
+$event['attendees'][$i]['noreply'] = true;
+}
+else {
+unset($event['attendees'][$i]['noreply']);
+}
+}
+if ($organizer === null && !empty($event['organizer'])) {
+$organizer = $event['organizer'];
+$organizer['role'] = 'ORGANIZER';
+if (!is_array($event['attendees']))
+$event['attendees'] = array();
+array_unshift($event['attendees'], $organizer);
+}
+// Convert HTML description into plain text
+if ($this->is_html($event)) {
+$h2t = new rcube_html2text($event['description'], false, true, 0);
+$event['description'] = trim($h2t->get_text());
+}
+// mapping url => vurl because of the fullcalendar client script
+$event['vurl'] = $event['url'];
+unset($event['url']);
+return array(
+'_id'   => $event['calendar'] . ':' . $event['id'],  // unique identifier for fullcalendar
+'start' => $this->lib->adjust_timezone($event['start'], $event['allday'])->format('c'),
+'end'   => $this->lib->adjust_timezone($event['end'], $event['allday'])->format('c'),
+// 'changed' might be empty for event recurrences (Bug #2185)
+'changed' => $event['changed'] ? $this->lib->adjust_timezone($event['changed'])->format('c') : null,
+'created' => $event['created'] ? $this->lib->adjust_timezone($event['created'])->format('c') : null,
+'title'       => strval($event['title']),
+'description' => strval($event['description']),
+'location'    => strval($event['location']),
+'className'   => ($addcss ? 'fc-event-cal-'.asciiwords($event['calendar'], true).' ' : '') .
+'fc-event-cat-' . asciiwords(strtolower(join('-', (array)$event['categories'])), true) .
+rtrim(' ' . $event['className']),
+'allDay'      => ($event['allday'] == 1),
+) + $event;
+}
+/**
+* Generate a unique identifier for an event
+*/
+public function generate_uid()
+{
+return strtoupper(md5(time() . uniqid(rand())) . '-' . substr(md5($this->rc->user->get_username()), 0, 16));
+}
+/**
+* TEMPORARY: generate random event data for testing
+* Create events by opening http://<roundcubeurl>/?_task=calendar&_action=randomdata&_num=500&_date=2014-08-01&_dev=120
+*/
+public function generate_randomdata()
+{
+@set_time_limit(0);
+$num   = $_REQUEST['_num'] ? intval($_REQUEST['_num']) : 100;
+$date  = $_REQUEST['_date'] ?: 'now';
+$dev   = $_REQUEST['_dev'] ?: 30;
+$cats  = array_keys($this->driver->list_categories());
+$cals  = $this->driver->list_calendars(calendar_driver::FILTER_ACTIVE);
+$count = 0;
+while ($count++ < $num) {
+$spread = intval($dev) * 86400; // days
+$refdate = strtotime($date);
+$start = round(($refdate + rand(-$spread, $spread)) / 600) * 600;
+$duration = round(rand(30, 360) / 30) * 30 * 60;
+$allday = rand(0,20) > 18;
+$alarm = rand(-30,12) * 5;
+$fb = rand(0,2);
+if (date('G', $start) > 23)
+$start -= 3600;
+if ($allday) {
+$start = strtotime(date('Y-m-d 00:00:00', $start));
+$duration = 86399;
+}
+$title = '';
+$len = rand(2, 12);
+$words = explode(" ", "The Hough transform is named after Paul Hough who patented the method in 1962. It is a technique which can be used to isolate features of a particular shape within an image. Because it requires that the desired features be specified in some parametric form, the classical Hough transform is most commonly used for the de- tection of regular curves such as lines, circles, ellipses, etc. A generalized Hough transform can be employed in applications where a simple analytic description of a feature(s) is not possible. Due to the computational complexity of the generalized Hough algorithm, we restrict the main focus of this discussion to the classical Hough transform. Despite its domain restrictions, the classical Hough transform (hereafter referred to without the classical prefix ) retains many applications, as most manufac- tured parts (and many anatomical parts investigated in medical imagery) contain feature boundaries which can be described by regular curves. The main advantage of the Hough transform technique is that it is tolerant of gaps in feature boundary descriptions and is relatively unaffected by image noise.");
+//      $chars = "!# abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ 1234567890";
+for ($i = 0; $i < $len; $i++)
+$title .= $words[rand(0,count($words)-1)] . " ";
+$this->driver->new_event(array(
+'uid' => $this->generate_uid(),
+'start' => new DateTime('@'.$start),
+'end' => new DateTime('@'.($start + $duration)),
+'allday' => $allday,
+'title' => rtrim($title),
+'free_busy' => $fb == 2 ? 'outofoffice' : ($fb ? 'busy' : 'free'),
+'categories' => $cats[array_rand($cats)],
+'calendar' => array_rand($cals),
+'alarms' => $alarm > 0 ? "-{$alarm}M:DISPLAY" : '',
+'priority' => rand(0,9),
+));
+}
+$this->rc->output->redirect('');
+}
+/**
+* Handler for attachments upload
+*/
+public function attachment_upload()
+{
+$this->lib->attachment_upload(self::SESSION_KEY, 'cal-');
+}
+/**
+* Handler for attachments download/displaying
+*/
+public function attachment_get()
+{
+// show loading page
+if (!empty($_GET['_preload'])) {
+return $this->lib->attachment_loading_page();
+}
+$event_id = rcube_utils::get_input_value('_event', rcube_utils::INPUT_GPC);
+$calendar = rcube_utils::get_input_value('_cal', rcube_utils::INPUT_GPC);
+$id       = rcube_utils::get_input_value('_id', rcube_utils::INPUT_GPC);
+$rev      = rcube_utils::get_input_value('_rev', rcube_utils::INPUT_GPC);
+$event = array('id' => $event_id, 'calendar' => $calendar, 'rev' => $rev);
+if ($calendar == '--invitation--itip') {
+$uid  = rcube_utils::get_input_value('_uid', rcube_utils::INPUT_GPC);
+$part = rcube_utils::get_input_value('_part', rcube_utils::INPUT_GPC);
+$mbox = rcube_utils::get_input_value('_mbox', rcube_utils::INPUT_GPC);
+$event      = $this->lib->mail_get_itip_object($mbox, $uid, $part, 'event');
+$attachment = $event['attachments'][$id];
+$attachment['body'] = &$attachment['data'];
+}
+else {
+$attachment = $this->driver->get_attachment($id, $event);
+}
+// show part page
+if (!empty($_GET['_frame'])) {
+$this->lib->attachment = $attachment;
+$this->register_handler('plugin.attachmentframe', array($this->lib, 'attachment_frame'));
+$this->register_handler('plugin.attachmentcontrols', array($this->lib, 'attachment_header'));
+$this->rc->output->send('calendar.attachment');
+}
+// deliver attachment content
+else if ($attachment) {
+if ($calendar != '--invitation--itip') {
+$attachment['body'] = $this->driver->get_attachment_body($id, $event);
+}
+$this->lib->attachment_get($attachment);
+}
+// if we arrive here, the requested part was not found
+header('HTTP/1.1 404 Not Found');
+exit;
+}
+/**
+* Determine whether the given event description is HTML formatted
+*/
+private function is_html($event)
+{
+// check for opening and closing <html> or <body> tags
+return (preg_match('/<(html|body)(\s+[a-z]|>)/', $event['description'], $m) && strpos($event['description'], '</'.$m[1].'>') > 0);
+}
+/**
+* Prepares new/edited event properties before save
+*/
+private function write_preprocess(&$event, $action)
+{
+// convert dates into DateTime objects in user's current timezone
+$event['start']  = new DateTime($event['start'], $this->timezone);
+$event['end']    = new DateTime($event['end'], $this->timezone);
+$event['allday'] = (bool)$event['allday'];
+// start/end is all we need for 'move' action (#1480)
+if ($action == 'move') {
+return;
+}
+// convert the submitted recurrence settings
+if (is_array($event['recurrence'])) {
+$event['recurrence'] = $this->lib->from_client_recurrence($event['recurrence'], $event['start']);
+}
+// convert the submitted alarm values
+if ($event['valarms']) {
+$event['valarms'] = libcalendaring::from_client_alarms($event['valarms']);
+}
+$attachments = array();
+$eventid     = 'cal-'.$event['id'];
+if (is_array($_SESSION[self::SESSION_KEY]) && $_SESSION[self::SESSION_KEY]['id'] == $eventid) {
+if (!empty($_SESSION[self::SESSION_KEY]['attachments'])) {
+foreach ($_SESSION[self::SESSION_KEY]['attachments'] as $id => $attachment) {
+if (is_array($event['attachments']) && in_array($id, $event['attachments'])) {
+$attachments[$id] = $this->rc->plugins->exec_hook('attachment_get', $attachment);
+}
+}
+}
+}
+$event['attachments'] = $attachments;
+// convert link references into simple URIs
+if (array_key_exists('links', $event)) {
+$event['links'] = array_map(function($link) {
+return is_array($link) ? $link['uri'] : strval($link);
+}, (array)$event['links']);
+}
+// check for organizer in attendees
+if ($action == 'new' || $action == 'edit') {
+if (!$event['attendees'])
+$event['attendees'] = array();
+$emails = $this->get_user_emails();
+$organizer = $owner = false;
+foreach ((array)$event['attendees'] as $i => $attendee) {
+if ($attendee['role'] == 'ORGANIZER')
+$organizer = $i;
+if ($attendee['email'] && in_array(strtolower($attendee['email']), $emails))
+$owner = $i;
+if (!isset($attendee['rsvp']))
+$event['attendees'][$i]['rsvp'] = true;
+else if (is_string($attendee['rsvp']))
+$event['attendees'][$i]['rsvp'] = $attendee['rsvp'] == 'true' || $attendee['rsvp'] == '1';
+}
+if (!empty($event['_identity'])) {
+$identity = $this->rc->user->get_identity($event['_identity']);
+}
+// set new organizer identity
+if ($organizer !== false && $identity) {
+$event['attendees'][$organizer]['name'] = $identity['name'];
+$event['attendees'][$organizer]['email'] = $identity['email'];
+}
+// set owner as organizer if yet missing
+else if ($organizer === false && $owner !== false) {
+$event['attendees'][$owner]['role'] = 'ORGANIZER';
+unset($event['attendees'][$owner]['rsvp']);
+}
+// fallback to the selected identity
+else if ($organizer === false && $identity) {
+$event['attendees'][] = array(
+'role'  => 'ORGANIZER',
+'name'  => $identity['name'],
+'email' => $identity['email'],
+);
+}
+}
+// mapping url => vurl because of the fullcalendar client script
+if (array_key_exists('vurl', $event)) {
+$event['url'] = $event['vurl'];
+unset($event['vurl']);
+}
+}
+/**
+* Releases some resources after successful event save
+*/
+private function cleanup_event(&$event)
+{
+// remove temp. attachment files
+if (!empty($_SESSION[self::SESSION_KEY]) && ($eventid = $_SESSION[self::SESSION_KEY]['id'])) {
+$this->rc->plugins->exec_hook('attachments_cleanup', array('group' => $eventid));
+$this->rc->session->remove(self::SESSION_KEY);
+}
+}
+/**
+* Send out an invitation/notification to all event attendees
+*/
+private function notify_attendees($event, $old, $action = 'edit', $comment = null, $rsvp = null)
+{
+if ($action == 'remove' || ($event['status'] == 'CANCELLED' && $old['status'] != $event['status'])) {
+$event['cancelled'] = true;
+$is_cancelled = true;
+}
+if ($rsvp === null)
+$rsvp = !$old || $event['sequence'] > $old['sequence'];
+$itip = $this->load_itip();
+$emails = $this->get_user_emails();
+$itip_notify = (int)$this->rc->config->get('calendar_itip_send_option', $this->defaults['calendar_itip_send_option']);
+// add comment to the iTip attachment
+$event['comment'] = $comment;
+// set a valid recurrence-id if this is a recurrence instance
+libcalendaring::identify_recurrence_instance($event);
+// compose multipart message using PEAR:Mail_Mime
+$method = $action == 'remove' ? 'CANCEL' : 'REQUEST';
+$message = $itip->compose_itip_message($event, $method, $rsvp);
+// list existing attendees from $old event
+$old_attendees = array();
+foreach ((array)$old['attendees'] as $attendee) {
+$old_attendees[] = $attendee['email'];
+}
+// send to every attendee
+$sent = 0; $current = array();
+foreach ((array)$event['attendees'] as $attendee) {
+$current[] = strtolower($attendee['email']);
+// skip myself for obvious reasons
+if (!$attendee['email'] || in_array(strtolower($attendee['email']), $emails))
+continue;
+// skip if notification is disabled for this attendee
+if ($attendee['noreply'] && $itip_notify & 2)
+continue;
+// skip if this attendee has delegated and set RSVP=FALSE
+if ($attendee['status'] == 'DELEGATED' && $attendee['rsvp'] === false)
+continue;
+// which template to use for mail text
+$is_new = !in_array($attendee['email'], $old_attendees);
+$is_rsvp = $is_new || $event['sequence'] > $old['sequence'];
+$bodytext = $is_cancelled ? 'eventcancelmailbody' : ($is_new ? 'invitationmailbody' : 'eventupdatemailbody');
+$subject  = $is_cancelled ? 'eventcancelsubject'  : ($is_new ? 'invitationsubject' : ($event['title'] ? 'eventupdatesubject':'eventupdatesubjectempty'));
+$event['comment'] = $comment;
+// finally send the message
+if ($itip->send_itip_message($event, $method, $attendee, $subject, $bodytext, $message, $is_rsvp))
+$sent++;
+else
+$sent = -100;
+}
+// TODO: on change of a recurring (main) event, also send updates to differing attendess of recurrence exceptions
+// send CANCEL message to removed attendees
+foreach ((array)$old['attendees'] as $attendee) {
+if ($attendee['role'] == 'ORGANIZER' || !$attendee['email'] || in_array(strtolower($attendee['email']), $current))
+continue;
+$vevent = $old;
+$vevent['cancelled'] = $is_cancelled;
+$vevent['attendees'] = array($attendee);
+$vevent['comment']   = $comment;
+if ($itip->send_itip_message($vevent, 'CANCEL', $attendee, 'eventcancelsubject', 'eventcancelmailbody'))
+$sent++;
+else
+$sent = -100;
+}
+return $sent;
+}
+/**
+* Echo simple free/busy status text for the given user and time range
+*/
+public function freebusy_status()
+{
+$email = rcube_utils::get_input_value('email', rcube_utils::INPUT_GPC);
+$start = rcube_utils::get_input_value('start', rcube_utils::INPUT_GPC);
+$end   = rcube_utils::get_input_value('end', rcube_utils::INPUT_GPC);
+// convert dates into unix timestamps
+if (!empty($start) && !is_numeric($start)) {
+$dts = new DateTime($start, $this->timezone);
+$start = $dts->format('U');
+}
+if (!empty($end) && !is_numeric($end)) {
+$dte = new DateTime($end, $this->timezone);
+$end = $dte->format('U');
+}
+if (!$start) $start = time();
+if (!$end) $end = $start + 3600;
+$fbtypemap = array(calendar::FREEBUSY_UNKNOWN => 'UNKNOWN', calendar::FREEBUSY_FREE => 'FREE', calendar::FREEBUSY_BUSY => 'BUSY', calendar::FREEBUSY_TENTATIVE => 'TENTATIVE', calendar::FREEBUSY_OOF => 'OUT-OF-OFFICE');
+$status = 'UNKNOWN';
+// if the backend has free-busy information
+$fblist = $this->driver->get_freebusy_list($email, $start, $end);
+if (is_array($fblist)) {
+$status = 'FREE';
+foreach ($fblist as $slot) {
+list($from, $to, $type) = $slot;
+if ($from < $end && $to > $start) {
+$status = isset($type) && $fbtypemap[$type] ? $fbtypemap[$type] : 'BUSY';
+break;
+}
+}
+}
+// let this information be cached for 5min
+$this->rc->output->future_expire_header(300);
+echo $status;
+exit;
+}
+/**
+* Return a list of free/busy time slots within the given period
+* Echo data in JSON encoding
+*/
+public function freebusy_times()
+{
+$email = rcube_utils::get_input_value('email', rcube_utils::INPUT_GPC);
+$start = rcube_utils::get_input_value('start', rcube_utils::INPUT_GPC);
+$end   = rcube_utils::get_input_value('end', rcube_utils::INPUT_GPC);
+$interval  = intval(rcube_utils::get_input_value('interval', rcube_utils::INPUT_GPC));
+$strformat = $interval > 60 ? 'Ymd' : 'YmdHis';
+// convert dates into unix timestamps
+if (!empty($start) && !is_numeric($start)) {
+$dts = rcube_utils::anytodatetime($start, $this->timezone);
+$start = $dts ? $dts->format('U') : null;
+}
+if (!empty($end) && !is_numeric($end)) {
+$dte = rcube_utils::anytodatetime($end, $this->timezone);
+$end = $dte ? $dte->format('U') : null;
+}
+if (!$start) $start = time();
+if (!$end)   $end = $start + 86400 * 30;
+if (!$interval) $interval = 60;  // 1 hour
+if (!$dte) {
+$dts = new DateTime('@'.$start);
+$dts->setTimezone($this->timezone);
+}
+$fblist = $this->driver->get_freebusy_list($email, $start, $end);
+$slots  = '';
+// prepare freebusy list before use (for better performance)
+if (is_array($fblist)) {
+foreach ($fblist as $idx => $slot) {
+list($from, $to, ) = $slot;
+// check for possible all-day times
+if (gmdate('His', $from) == '000000' && gmdate('His', $to) == '235959') {
+// shift into the user's timezone for sane matching
+$fblist[$idx][0] -= $this->gmt_offset;
+$fblist[$idx][1] -= $this->gmt_offset;
+}
+}
+}
+// build a list from $start till $end with blocks representing the fb-status
+for ($s = 0, $t = $start; $t <= $end; $s++) {
+$t_end = $t + $interval * 60;
+$dt = new DateTime('@'.$t);
+$dt->setTimezone($this->timezone);
+// determine attendee's status
+if (is_array($fblist)) {
+$status = self::FREEBUSY_FREE;
+foreach ($fblist as $slot) {
+list($from, $to, $type) = $slot;
+if ($from < $t_end && $to > $t) {
+$status = isset($type) ? $type : self::FREEBUSY_BUSY;
+if ($status == self::FREEBUSY_BUSY)  // can't get any worse :-)
+break;
+}
+}
+}
+else {
+$status = self::FREEBUSY_UNKNOWN;
+}
+// use most compact format, assume $status is one digit/character
+$slots .= $status;
+$t = $t_end;
+}
+$dte = new DateTime('@'.$t_end);
+$dte->setTimezone($this->timezone);
+// let this information be cached for 5min
+$this->rc->output->future_expire_header(300);
+echo rcube_output::json_serialize(array(
+'email' => $email,
+'start' => $dts->format('c'),
+'end'   => $dte->format('c'),
+'interval' => $interval,
+'slots' => $slots,
+));
+exit;
+}
+/**
+* Handler for printing calendars
+*/
+public function print_view()
+{
+$title = $this->gettext('print');
+$view = rcube_utils::get_input_value('view', rcube_utils::INPUT_GPC);
+if (!in_array($view, array('agendaWeek', 'agendaDay', 'month', 'table')))
+$view = 'agendaDay';
+$this->rc->output->set_env('view',$view);
+if ($date = rcube_utils::get_input_value('date', rcube_utils::INPUT_GPC))
+$this->rc->output->set_env('date', $date);
+if ($range = rcube_utils::get_input_value('range', rcube_utils::INPUT_GPC))
+$this->rc->output->set_env('listRange', intval($range));
+if (isset($_REQUEST['sections']))
+$this->rc->output->set_env('listSections', rcube_utils::get_input_value('sections', rcube_utils::INPUT_GPC));
+if ($search = rcube_utils::get_input_value('search', rcube_utils::INPUT_GPC)) {
+$this->rc->output->set_env('search', $search);
+$title .= ' "' . $search . '"';
+}
+// Add CSS stylesheets to the page header
+$skin_path = $this->local_skin_path();
+$this->include_stylesheet($skin_path . '/fullcalendar.css');
+$this->include_stylesheet($skin_path . '/print.css');
+// Add JS files to the page header
+$this->include_script('print.js');
+$this->include_script('lib/js/fullcalendar.js');
+$this->register_handler('plugin.calendar_css', array($this->ui, 'calendar_css'));
+$this->register_handler('plugin.calendar_list', array($this->ui, 'calendar_list'));
+$this->rc->output->set_pagetitle($title);
+$this->rc->output->send("calendar.print");
+}
+/**
+*
+*/
+public function get_inline_ui()
+{
+foreach (array('save','cancel','savingdata') as $label)
+$texts['calendar.'.$label] = $this->gettext($label);
+$texts['calendar.new_event'] = $this->gettext('createfrommail');
+$this->ui->init_templates();
+$this->ui->calendar_list();  # set env['calendars']
+echo $this->api->output->parse('calendar.eventedit', false, false);
+echo html::tag('script', array('type' => 'text/javascript'),
+"rcmail.set_env('calendars', " . rcube_output::json_serialize($this->api->output->env['calendars']) . ");\n".
+"rcmail.set_env('deleteicon', '" . $this->api->output->env['deleteicon'] . "');\n".
+"rcmail.set_env('cancelicon', '" . $this->api->output->env['cancelicon'] . "');\n".
+"rcmail.set_env('loadingicon', '" . $this->api->output->env['loadingicon'] . "');\n".
+"rcmail.gui_object('attachmentlist', '"  . $this->ui->attachmentlist_id . "');\n".
+"rcmail.add_label(" . rcube_output::json_serialize($texts) . ");\n"
+);
+exit;
+}
+/**
+* Compare two event objects and return differing properties
+*
+* @param array Event A
+* @param array Event B
+* @return array List of differing event properties
+*/
+public static function event_diff($a, $b)
+{
+$diff = array();
+$ignore = array('changed' => 1, 'attachments' => 1);
+foreach (array_unique(array_merge(array_keys($a), array_keys($b))) as $key) {
+if (!$ignore[$key] && $key[0] != '_' && $a[$key] != $b[$key])
+$diff[] = $key;
+}
+// only compare number of attachments
+if (count($a['attachments']) != count($b['attachments']))
+$diff[] = 'attachments';
+return $diff;
+}
+/**
+* Update attendee properties on the given event object
+*
+* @param array The event object to be altered
+* @param array List of hash arrays each represeting an updated/added attendee
+*/
+public static function merge_attendee_data(&$event, $attendees, $removed = null)
+{
+if (!empty($attendees) && !is_array($attendees[0])) {
+$attendees = array($attendees);
+}
+foreach ($attendees as $attendee) {
+$found = false;
+foreach ($event['attendees'] as $i => $candidate) {
+if ($candidate['email'] == $attendee['email']) {
+$event['attendees'][$i] = $attendee;
+$found = true;
+break;
+}
+}
+if (!$found) {
+$event['attendees'][] = $attendee;
+}
+}
+// filter out removed attendees
+if (!empty($removed)) {
+$event['attendees'] = array_filter($event['attendees'], function($attendee) use ($removed) {
+return !in_array($attendee['email'], $removed);
+});
+}
+}
+/****  Resource management functions  ****/
+/**
+* Getter for the configured implementation of the resource directory interface
+*/
+private function resources_directory()
+{
+if (is_object($this->resources_dir)) {
+return $this->resources_dir;
+}
+if ($driver_name = $this->rc->config->get('calendar_resources_driver')) {
+$driver_class = 'resources_driver_' . $driver_name;
+require_once($this->home . '/drivers/resources_driver.php');
+require_once($this->home . '/drivers/' . $driver_name . '/' . $driver_class . '.php');
+$this->resources_dir = new $driver_class($this);
+}
+return $this->resources_dir;
+}
+/**
+* Handler for resoruce autocompletion requests
+*/
+public function resources_autocomplete()
+{
+$search = rcube_utils::get_input_value('_search', rcube_utils::INPUT_GPC, true);
+$sid    = rcube_utils::get_input_value('_reqid', rcube_utils::INPUT_GPC);
+$maxnum = (int)$this->rc->config->get('autocomplete_max', 15);
+$results = array();
+if ($directory = $this->resources_directory()) {
+foreach ($directory->load_resources($search, $maxnum) as $rec) {
+$results[]  = array(
+'name'  => $rec['name'],
+'email' => $rec['email'],
+'type'  => $rec['_type'],
+);
+}
+}
+$this->rc->output->command('ksearch_query_results', $results, $search, $sid);
+$this->rc->output->send();
+}
+/**
+* Handler for load-requests for resource data
+*/
+function resources_list()
+{
+$data = array();
+if ($directory = $this->resources_directory()) {
+foreach ($directory->load_resources() as $rec) {
+$data[] = $rec;
+}
+}
+$this->rc->output->command('plugin.resource_data', $data);
+$this->rc->output->send();
+}
+/**
+* Handler for requests loading resource owner information
+*/
+function resources_owner()
+{
+if ($directory = $this->resources_directory()) {
+$id = rcube_utils::get_input_value('_id', rcube_utils::INPUT_GPC);
+$data = $directory->get_resource_owner($id);
+}
+$this->rc->output->command('plugin.resource_owner', $data);
+$this->rc->output->send();
+}
+/**
+* Deliver event data for a resource's calendar
+*/
+function resources_calendar()
+{
+$events = array();
+if ($directory = $this->resources_directory()) {
+$events = $directory->get_resource_calendar(
+rcube_utils::get_input_value('_id', rcube_utils::INPUT_GPC),
+rcube_utils::get_input_value('start', rcube_utils::INPUT_GET),
+rcube_utils::get_input_value('end', rcube_utils::INPUT_GET));
+}
+echo $this->encode($events);
+exit;
+}
+/****  Event invitation plugin hooks ****/
+/**
+* Find an event in user calendars
+*/
+protected function find_event($event, &$mode)
+{
+$this->load_driver();
+// We search for writeable calendars in personal namespace by default
+$mode   = calendar_driver::FILTER_WRITEABLE | calendar_driver::FILTER_PERSONAL;
+$result = $this->driver->get_event($event, $mode);
+// ... now check shared folders if not found
+if (!$result) {
+$result = $this->driver->get_event($event, calendar_driver::FILTER_WRITEABLE | calendar_driver::FILTER_SHARED);
+if ($result) {
+$mode |= calendar_driver::FILTER_SHARED;
+}
+}
+return $result;
+}
+/**
+* Handler for calendar/itip-status requests
+*/
+function event_itip_status()
+{
+$data = rcube_utils::get_input_value('data', rcube_utils::INPUT_POST, true);
+$this->load_driver();
+// find local copy of the referenced event (in personal namespace)
+$existing  = $this->find_event($data, $mode);
+$is_shared = $mode & calendar_driver::FILTER_SHARED;
+$itip      = $this->load_itip();
+$response  = $itip->get_itip_status($data, $existing);
+// get a list of writeable calendars to save new events to
+if ((!$existing || $is_shared)
+&& !$data['nosave']
+&& ($response['action'] == 'rsvp' || $response['action'] == 'import')
+) {
+$calendars = $this->driver->list_calendars($mode);
+$calendar_select = new html_select(array('name' => 'calendar', 'id' => 'itip-saveto', 'is_escaped' => true));
+$calendar_select->add('--', '');
+$numcals = 0;
+foreach ($calendars as $calendar) {
+if ($calendar['editable']) {
+$calendar_select->add($calendar['name'], $calendar['id']);
+$numcals++;
+}
+}
+if ($numcals < 1)
+$calendar_select = null;
+}
+if ($calendar_select) {
+$default_calendar = $this->get_default_calendar($data['sensitivity'], $calendars);
+$response['select'] = html::span('folder-select', $this->gettext('saveincalendar') . '&nbsp;' .
+$calendar_select->show($is_shared ? $existing['calendar'] : $default_calendar['id']));
+}
+else if ($data['nosave']) {
+$response['select'] = html::tag('input', array('type' => 'hidden', 'name' => 'calendar', 'id' => 'itip-saveto', 'value' => ''));
+}
+// render small agenda view for the respective day
+if ($data['method'] == 'REQUEST' && !empty($data['date']) && $response['action'] == 'rsvp') {
+$event_start = rcube_utils::anytodatetime($data['date']);
+$day_start = new Datetime(gmdate('Y-m-d 00:00', $data['date']), $this->lib->timezone);
+$day_end = new Datetime(gmdate('Y-m-d 23:59', $data['date']), $this->lib->timezone);
+// get events on that day from the user's personal calendars
+$calendars = $this->driver->list_calendars(calendar_driver::FILTER_PERSONAL);
+$events = $this->driver->load_events($day_start->format('U'), $day_end->format('U'), null, array_keys($calendars));
+usort($events, function($a, $b) { return $a['start'] > $b['start'] ? 1 : -1; });
+$before = $after = array();
+foreach ($events as $event) {
+// TODO: skip events with free_busy == 'free' ?
+if ($event['uid'] == $data['uid'] || $event['end'] < $day_start || $event['start'] > $day_end)
+continue;
+else if ($event['start'] < $event_start)
+$before[] = $this->mail_agenda_event_row($event);
+else
+$after[] = $this->mail_agenda_event_row($event);
+}
+$response['append'] = array(
+'selector' => '.calendar-agenda-preview',
+'replacements' => array(
+'%before%' => !empty($before) ? join("\n", array_slice($before,  -3)) : html::div('event-row no-event', $this->gettext('noearlierevents')),
+'%after%'  => !empty($after)  ? join("\n", array_slice($after, 0, 3)) : html::div('event-row no-event', $this->gettext('nolaterevents')),
+),
+);
+}
+$this->rc->output->command('plugin.update_itip_object_status', $response);
+}
+/**
+* Handler for calendar/itip-remove requests
+*/
+function event_itip_remove()
+{
+$success  = false;
+$uid      = rcube_utils::get_input_value('uid', rcube_utils::INPUT_POST);
+$instance = rcube_utils::get_input_value('_instance', rcube_utils::INPUT_POST);
+$savemode = rcube_utils::get_input_value('_savemode', rcube_utils::INPUT_POST);
+$listmode = calendar_driver::FILTER_WRITEABLE | calendar_driver::FILTER_PERSONAL;
+// search for event if only UID is given
+if ($event = $this->driver->get_event(array('uid' => $uid, '_instance' => $instance), $listmode)) {
+$event['_savemode'] = $savemode;
+$success = $this->driver->remove_event($event, true);
+}
+if ($success) {
+$this->rc->output->show_message('calendar.successremoval', 'confirmation');
+}
+else {
+$this->rc->output->show_message('calendar.errorsaving', 'error');
+}
+}
+/**
+* Handler for URLs that allow an invitee to respond on his invitation mail
+*/
+public function itip_attend_response($p)
+{
+$this->setup();
+if ($p['action'] == 'attend') {
+$this->ui->init();
+$this->rc->output->set_env('task', 'calendar');  // override some env vars
+$this->rc->output->set_env('refresh_interval', 0);
+$this->rc->output->set_pagetitle($this->gettext('calendar'));
+$itip  = $this->load_itip();
+$token = rcube_utils::get_input_value('_t', rcube_utils::INPUT_GPC);
+// read event info stored under the given token
+if ($invitation = $itip->get_invitation($token)) {
+$this->token = $token;
+$this->event = $invitation['event'];
+// show message about cancellation
+if ($invitation['cancelled']) {
+$this->invitestatus = html::div('rsvp-status declined', $itip->gettext('eventcancelled'));
+}
+// save submitted RSVP status
+else if (!empty($_POST['rsvp'])) {
+$status = null;
+foreach (array('accepted','tentative','declined') as $method) {
+if ($_POST['rsvp'] == $itip->gettext('itip' . $method)) {
+$status = $method;
+break;
+}
+}
+// send itip reply to organizer
+$invitation['event']['comment'] = rcube_utils::get_input_value('_comment', rcube_utils::INPUT_POST);
+if ($status && $itip->update_invitation($invitation, $invitation['attendee'], strtoupper($status))) {
+$this->invitestatus = html::div('rsvp-status ' . strtolower($status), $itip->gettext('youhave'.strtolower($status)));
+}
+else
+$this->rc->output->command('display_message', $this->gettext('errorsaving'), 'error', -1);
+// if user is logged in...
+// FIXME: we should really consider removing this functionality
+//        it's confusing that it creates/updates an event only for logged-in user
+//        what if the logged-in user is not the same as the attendee?
+if ($this->rc->user->ID) {
+$this->load_driver();
+$invitation = $itip->get_invitation($token);
+$existing   = $this->driver->get_event($this->event);
+// save the event to his/her default calendar if not yet present
+if (!$existing && ($calendar = $this->get_default_calendar($invitation['event']['sensitivity']))) {
+$invitation['event']['calendar'] = $calendar['id'];
+if ($this->driver->new_event($invitation['event']))
+$this->rc->output->command('display_message', $this->gettext(array('name' => 'importedsuccessfully', 'vars' => array('calendar' => $calendar['name']))), 'confirmation');
+else
+$this->rc->output->command('display_message', $this->gettext('errorimportingevent'), 'error');
+}
+else if ($existing
+&& ($this->event['sequence'] >= $existing['sequence'] || $this->event['changed'] >= $existing['changed'])
+&& ($calendar = $this->driver->get_calendar($existing['calendar']))
+) {
+$this->event       = $invitation['event'];
+$this->event['id'] = $existing['id'];
+unset($this->event['comment']);
+// merge attendees status
+// e.g. preserve my participant status for regular updates
+$this->lib->merge_attendees($this->event, $existing, $status);
+// update attachments list
+$event['deleted_attachments'] = true;
+// show me as free when declined (#1670)
+if ($status == 'declined')
+$this->event['free_busy'] = 'free';
+if ($this->driver->edit_event($this->event))
+$this->rc->output->command('display_message', $this->gettext(array('name' => 'updatedsuccessfully', 'vars' => array('calendar' => $calendar->get_name()))), 'confirmation');
+else
+$this->rc->output->command('display_message', $this->gettext('errorimportingevent'), 'error');
+}
+}
+}
+$this->register_handler('plugin.event_inviteform', array($this, 'itip_event_inviteform'));
+$this->register_handler('plugin.event_invitebox', array($this->ui, 'event_invitebox'));
+if (!$this->invitestatus) {
+$this->itip->set_rsvp_actions(array('accepted','tentative','declined'));
+$this->register_handler('plugin.event_rsvp_buttons', array($this->ui, 'event_rsvp_buttons'));
+}
+$this->rc->output->set_pagetitle($itip->gettext('itipinvitation') . ' ' . $this->event['title']);
+}
+else
+$this->rc->output->command('display_message', $this->gettext('itipinvalidrequest'), 'error', -1);
+$this->rc->output->send('calendar.itipattend');
+}
+}
+/**
+*
+*/
+public function itip_event_inviteform($attrib)
+{
+$hidden = new html_hiddenfield(array('name' => "_t", 'value' => $this->token));
+return html::tag('form', array('action' => $this->rc->url(array('task' => 'calendar', 'action' => 'attend')), 'method' => 'post', 'noclose' => true) + $attrib) . $hidden->show();
+}
+/**
+*
+*/
+private function mail_agenda_event_row($event, $class = '')
+{
+$time = $event['allday'] ? $this->gettext('all-day') :
+$this->rc->format_date($event['start'], $this->rc->config->get('time_format')) . ' - ' .
+$this->rc->format_date($event['end'], $this->rc->config->get('time_format'));
+return html::div(rtrim('event-row ' . $class),
+html::span('event-date', $time) .
+html::span('event-title', rcube::Q($event['title']))
+);
+}
+/**
+*
+*/
+public function mail_messages_list($p)
+{
+if (in_array('attachment', (array)$p['cols']) && !empty($p['messages'])) {
+foreach ($p['messages'] as $header) {
+$part = new StdClass;
+$part->mimetype = $header->ctype;
+if (libcalendaring::part_is_vcalendar($part)) {
+$header->list_flags['attachmentClass'] = 'ical';
+}
+else if (in_array($header->ctype, array('multipart/alternative', 'multipart/mixed'))) {
+// TODO: fetch bodystructure and search for ical parts. Maybe too expensive?
+if (!empty($header->structure) && is_array($header->structure->parts)) {
+foreach ($header->structure->parts as $part) {
+if (libcalendaring::part_is_vcalendar($part) && !empty($part->ctype_parameters['method'])) {
+$header->list_flags['attachmentClass'] = 'ical';
+break;
+}
+}
+}
+}
+}
+}
+}
+/**
+* Add UI element to copy event invitations or updates to the calendar
+*/
+public function mail_messagebody_html($p)
+{
+// load iCalendar functions (if necessary)
+if (!empty($this->lib->ical_parts)) {
+$this->get_ical();
+$this->load_itip();
+}
+$html = '';
+$has_events = false;
+$ical_objects = $this->lib->get_mail_ical_objects();
+// show a box for every event in the file
+foreach ($ical_objects as $idx => $event) {
+if ($event['_type'] != 'event')  // skip non-event objects (#2928)
+continue;
+$has_events = true;
+// get prepared inline UI for this event object
+if ($ical_objects->method) {
+$append = '';
+// prepare a small agenda preview to be filled with actual event data on async request
+if ($ical_objects->method == 'REQUEST') {
+$append = html::div('calendar-agenda-preview',
+html::tag('h3', 'preview-title', $this->gettext('agenda') . ' ' .
+html::span('date', $this->rc->format_date($event['start'], $this->rc->config->get('date_format')))
+) . '%before%' . $this->mail_agenda_event_row($event, 'current') . '%after%');
+}
+$html .= html::div('calendar-invitebox',
+$this->itip->mail_itip_inline_ui(
+$event,
+$ical_objects->method,
+$ical_objects->mime_id . ':' . $idx,
+'calendar',
+rcube_utils::anytodatetime($ical_objects->message_date),
+$this->rc->url(array('task' => 'calendar')) . '&view=agendaDay&date=' . $event['start']->format('U')
+) . $append
+);
+}
+// limit listing
+if ($idx >= 3)
+break;
+}
+// prepend event boxes to message body
+if ($html) {
+$this->ui->init();
+$p['content'] = $html . $p['content'];
+$this->rc->output->add_label('calendar.savingdata','calendar.deleteventconfirm','calendar.declinedeleteconfirm');
+}
+// add "Save to calendar" button into attachment menu
+if ($has_events) {
+$this->add_button(array(
+'id'         => 'attachmentsavecal',
+'name'       => 'attachmentsavecal',
+'type'       => 'link',
+'wrapper'    => 'li',
+'command'    => 'attachment-save-calendar',
+'class'      => 'icon calendarlink',
+'classact'   => 'icon calendarlink active',
+'innerclass' => 'icon calendar',
+'label'      => 'calendar.savetocalendar',
+), 'attachmentmenu');
+}
+return $p;
+}
+/**
+* Handler for POST request to import an event attached to a mail message
+*/
+public function mail_import_itip()
+{
+$itip_sending = $this->rc->config->get('calendar_itip_send_option', $this->defaults['calendar_itip_send_option']);
+$uid     = rcube_utils::get_input_value('_uid', rcube_utils::INPUT_POST);
+$mbox    = rcube_utils::get_input_value('_mbox', rcube_utils::INPUT_POST);
+$mime_id = rcube_utils::get_input_value('_part', rcube_utils::INPUT_POST);
+$status  = rcube_utils::get_input_value('_status', rcube_utils::INPUT_POST);
+$delete  = intval(rcube_utils::get_input_value('_del', rcube_utils::INPUT_POST));
+$noreply = intval(rcube_utils::get_input_value('_noreply', rcube_utils::INPUT_POST));
+$noreply = $noreply || $status == 'needs-action' || $itip_sending === 0;
+$instance = rcube_utils::get_input_value('_instance', rcube_utils::INPUT_POST);
+$savemode = rcube_utils::get_input_value('_savemode', rcube_utils::INPUT_POST);
+$comment  = rcube_utils::get_input_value('_comment', rcube_utils::INPUT_POST);
+$error_msg = $this->gettext('errorimportingevent');
+$success   = false;
+if ($status == 'delegated') {
+$delegates = rcube_mime::decode_address_list(rcube_utils::get_input_value('_to', rcube_utils::INPUT_POST, true), 1, false);
+$delegate  = reset($delegates);
+if (empty($delegate) || empty($delegate['mailto'])) {
+$this->rc->output->command('display_message', $this->rc->gettext('libcalendaring.delegateinvalidaddress'), 'error');
+return;
+}
+}
+// successfully parsed events?
+if ($event = $this->lib->mail_get_itip_object($mbox, $uid, $mime_id, 'event')) {
+// forward iTip request to delegatee
+if ($delegate) {
+$rsvpme = rcube_utils::get_input_value('_rsvp', rcube_utils::INPUT_POST);
+$itip   = $this->load_itip();
+$event['comment'] = $comment;
+if ($itip->delegate_to($event, $delegate, !empty($rsvpme))) {
+$this->rc->output->show_message('calendar.itipsendsuccess', 'confirmation');
+}
+else {
+$this->rc->output->command('display_message', $this->gettext('itipresponseerror'), 'error');
+}
+unset($event['comment']);
+// the delegator is set to non-participant, thus save as non-blocking
+$event['free_busy'] = 'free';
+}
+$mode = calendar_driver::FILTER_PERSONAL
+| calendar_driver::FILTER_SHARED
+| calendar_driver::FILTER_WRITEABLE;
+// find writeable calendar to store event
+$cal_id    = rcube_utils::get_input_value('_folder', rcube_utils::INPUT_POST);
+$dontsave  = $cal_id === '' && $event['_method'] == 'REQUEST';
+$calendars = $this->driver->list_calendars($mode);
+$calendar  = $calendars[$cal_id];
+// select default calendar except user explicitly selected 'none'
+if (!$calendar && !$dontsave)
+$calendar = $this->get_default_calendar($event['sensitivity'], $calendars);
+$metadata = array(
+'uid' => $event['uid'],
+'_instance' => $event['_instance'],
+'changed' => is_object($event['changed']) ? $event['changed']->format('U') : 0,
+'sequence' => intval($event['sequence']),
+'fallback' => strtoupper($status),
+'method' => $event['_method'],
+'task' => 'calendar',
+);
+// update my attendee status according to submitted method
+if (!empty($status)) {
+$organizer = null;
+$emails = $this->get_user_emails();
+foreach ($event['attendees'] as $i => $attendee) {
+if ($attendee['role'] == 'ORGANIZER') {
+$organizer = $attendee;
+}
+else if ($attendee['email'] && in_array(strtolower($attendee['email']), $emails)) {
+$event['attendees'][$i]['status'] = strtoupper($status);
+if (!in_array($event['attendees'][$i]['status'], array('NEEDS-ACTION','DELEGATED')))
+$event['attendees'][$i]['rsvp'] = false;  // unset RSVP attribute
+$metadata['attendee'] = $attendee['email'];
+$metadata['rsvp'] = $attendee['role'] != 'NON-PARTICIPANT';
+$reply_sender = $attendee['email'];
+$event_attendee = $attendee;
+}
+}
+// add attendee with this user's default identity if not listed
+if (!$reply_sender) {
+$sender_identity = $this->rc->user->list_emails(true);
+$event['attendees'][] = array(
+'name' => $sender_identity['name'],
+'email' => $sender_identity['email'],
+'role' => 'OPT-PARTICIPANT',
+'status' => strtoupper($status),
+);
+$metadata['attendee'] = $sender_identity['email'];
+}
+}
+// save to calendar
+if ($calendar && $calendar['editable']) {
+// check for existing event with the same UID
+$existing = $this->find_event($event, $mode);
+// we'll create a new copy if user decided to change the calendar
+if ($existing && $cal_id && $calendar && $calendar['id'] != $existing['calendar']) {
+$existing = null;
+}
+if ($existing) {
+$calendar = $calendars[$existing['calendar']];
+// forward savemode for correct updates of recurring events
+$existing['_savemode'] = $savemode ?: $event['_savemode'];
+// only update attendee status
+if ($event['_method'] == 'REPLY') {
+// try to identify the attendee using the email sender address
+$existing_attendee = -1;
+$existing_attendee_emails = array();
+foreach ($existing['attendees'] as $i => $attendee) {
+$existing_attendee_emails[] = $attendee['email'];
+if ($this->itip->compare_email($attendee['email'], $event['_sender'], $event['_sender_utf'])) {
+$existing_attendee = $i;
+}
+}
+$event_attendee = null;
+$update_attendees = array();
+foreach ($event['attendees'] as $attendee) {
+if ($this->itip->compare_email($attendee['email'], $event['_sender'], $event['_sender_utf'])) {
+$event_attendee = $attendee;
+$update_attendees[] = $attendee;
+$metadata['fallback'] = $attendee['status'];
+$metadata['attendee'] = $attendee['email'];
+$metadata['rsvp'] = $attendee['rsvp'] || $attendee['role'] != 'NON-PARTICIPANT';
+if ($attendee['status'] != 'DELEGATED') {
+break;
+}
+}
+// also copy delegate attendee
+else if (!empty($attendee['delegated-from'])
+&& $this->itip->compare_email($attendee['delegated-from'], $event['_sender'], $event['_sender_utf'])
+) {
+$update_attendees[] = $attendee;
+if (!in_array_nocase($attendee['email'], $existing_attendee_emails)) {
+$existing['attendees'][] = $attendee;
+}
+}
+}
+// if delegatee has declined, set delegator's RSVP=True
+if ($event_attendee && $event_attendee['status'] == 'DECLINED' && $event_attendee['delegated-from']) {
+foreach ($existing['attendees'] as $i => $attendee) {
+if ($attendee['email'] == $event_attendee['delegated-from']) {
+$existing['attendees'][$i]['rsvp'] = true;
+break;
+}
+}
+}
+// found matching attendee entry in both existing and new events
+if ($existing_attendee >= 0 && $event_attendee) {
+$existing['attendees'][$existing_attendee] = $event_attendee;
+$success = $this->driver->update_attendees($existing, $update_attendees);
+}
+// update the entire attendees block
+else if (($event['sequence'] >= $existing['sequence'] || $event['changed'] >= $existing['changed']) && $event_attendee) {
+$existing['attendees'][] = $event_attendee;
+$success = $this->driver->update_attendees($existing, $update_attendees);
+}
+else {
+$error_msg = $this->gettext('newerversionexists');
+}
+}
+// delete the event when declined (#1670)
+else if ($status == 'declined' && $delete) {
+$deleted = $this->driver->remove_event($existing, true);
+$success = true;
+}
+// import the (newer) event
+else if ($event['sequence'] >= $existing['sequence'] || $event['changed'] >= $existing['changed']) {
+$event['id'] = $existing['id'];
+$event['calendar'] = $existing['calendar'];
+// merge attendees status
+// e.g. preserve my participant status for regular updates
+$this->lib->merge_attendees($event, $existing, $status);
+// set status=CANCELLED on CANCEL messages
+if ($event['_method'] == 'CANCEL')
+$event['status'] = 'CANCELLED';
+// update attachments list, allow attachments update only on REQUEST (#5342)
+if ($event['_method'] == 'REQUEST')
+$event['deleted_attachments'] = true;
+else
+unset($event['attachments']);
+// show me as free when declined (#1670)
+if ($status == 'declined' || $event['status'] == 'CANCELLED' || $event_attendee['role'] == 'NON-PARTICIPANT')
+$event['free_busy'] = 'free';
+$success = $this->driver->edit_event($event);
+}
+else if (!empty($status)) {
+$existing['attendees'] = $event['attendees'];
+if ($status == 'declined' || $event_attendee['role'] == 'NON-PARTICIPANT')  // show me as free when declined (#1670)
+$existing['free_busy'] = 'free';
+$success = $this->driver->edit_event($existing);
+}
+else
+$error_msg = $this->gettext('newerversionexists');
+}
+else if (!$existing && ($status != 'declined' || $this->rc->config->get('kolab_invitation_calendars'))) {
+if ($status == 'declined' || $event['status'] == 'CANCELLED' || $event_attendee['role'] == 'NON-PARTICIPANT') {
+$event['free_busy'] = 'free';
+}
+// if the RSVP reply only refers to a single instance:
+// store unmodified master event with current instance as exception
+if (!empty($instance) && !empty($savemode) && $savemode != 'all') {
+$master = $this->lib->mail_get_itip_object($mbox, $uid, $mime_id, 'event');
+if ($master['recurrence'] && !$master['_instance']) {
+// compute recurring events until this instance's date
+if ($recurrence_date = rcube_utils::anytodatetime($instance, $master['start']->getTimezone())) {
+$recurrence_date->setTime(23,59,59);
+foreach ($this->driver->get_recurring_events($master, $master['start'], $recurrence_date) as $recurring) {
+if ($recurring['_instance'] == $instance) {
+// copy attendees block with my partstat to exception
+$recurring['attendees'] = $event['attendees'];
+$master['recurrence']['EXCEPTIONS'][] = $recurring;
+$event = $recurring;  // set reference for iTip reply
+break;
+}
+}
+$master['calendar'] = $event['calendar'] = $calendar['id'];
+$success = $this->driver->new_event($master);
+}
+else {
+$master = null;
+}
+}
+else {
+$master = null;
+}
+}
+// save to the selected/default calendar
+if (!$master) {
+$event['calendar'] = $calendar['id'];
+$success = $this->driver->new_event($event);
+}
+}
+else if ($status == 'declined')
+$error_msg = null;
+}
+else if ($status == 'declined' || $dontsave)
+$error_msg = null;
+else
+$error_msg = $this->gettext('nowritecalendarfound');
+}
+if ($success) {
+$message = $event['_method'] == 'REPLY' ? 'attendeupdateesuccess' : ($deleted ? 'successremoval' : ($existing ? 'updatedsuccessfully' : 'importedsuccessfully'));
+$this->rc->output->command('display_message', $this->gettext(array('name' => $message, 'vars' => array('calendar' => $calendar['name']))), 'confirmation');
+}
+if ($success || $dontsave) {
+$metadata['calendar'] = $event['calendar'];
+$metadata['nosave'] = $dontsave;
+$metadata['rsvp'] = intval($metadata['rsvp']);
+$metadata['after_action'] = $this->rc->config->get('calendar_itip_after_action', $this->defaults['calendar_itip_after_action']);
+$this->rc->output->command('plugin.itip_message_processed', $metadata);
+$error_msg = null;
+}
+else if ($error_msg) {
+$this->rc->output->command('display_message', $error_msg, 'error');
+}
+// send iTip reply
+if ($event['_method'] == 'REQUEST' && $organizer && !$noreply && !in_array(strtolower($organizer['email']), $emails) && !$error_msg) {
+$event['comment'] = $comment;
+$itip = $this->load_itip();
+$itip->set_sender_email($reply_sender);
+if ($itip->send_itip_message($event, 'REPLY', $organizer, 'itipsubject' . $status, 'itipmailbody' . $status))
+$this->rc->output->command('display_message', $this->gettext(array('name' => 'sentresponseto', 'vars' => array('mailto' => $organizer['name'] ? $organizer['name'] : $organizer['email']))), 'confirmation');
+else
+$this->rc->output->command('display_message', $this->gettext('itipresponseerror'), 'error');
+}
+$this->rc->output->send();
+}
+/**
+* Handler for calendar/itip-remove requests
+*/
+function mail_itip_decline_reply()
+{
+$uid     = rcube_utils::get_input_value('_uid', rcube_utils::INPUT_POST);
+$mbox    = rcube_utils::get_input_value('_mbox', rcube_utils::INPUT_POST);
+$mime_id = rcube_utils::get_input_value('_part', rcube_utils::INPUT_POST);
+if (($event = $this->lib->mail_get_itip_object($mbox, $uid, $mime_id, 'event')) && $event['_method'] == 'REPLY') {
+$event['comment'] = rcube_utils::get_input_value('_comment', rcube_utils::INPUT_POST);
+foreach ($event['attendees'] as $_attendee) {
+if ($_attendee['role'] != 'ORGANIZER') {
+$attendee = $_attendee;
+break;
+}
+}
+$itip = $this->load_itip();
+if ($itip->send_itip_message($event, 'CANCEL', $attendee, 'itipsubjectcancel', 'itipmailbodycancel'))
+$this->rc->output->command('display_message', $this->gettext(array('name' => 'sentresponseto', 'vars' => array('mailto' => $attendee['name'] ? $attendee['name'] : $attendee['email']))), 'confirmation');
+else
+$this->rc->output->command('display_message', $this->gettext('itipresponseerror'), 'error');
+}
+else {
+$this->rc->output->command('display_message', $this->gettext('itipresponseerror'), 'error');
+}
+}
+/**
+* Handler for calendar/itip-delegate requests
+*/
+function mail_itip_delegate()
+{
+// forward request to mail_import_itip() with the right status
+$_POST['_status'] = $_REQUEST['_status'] = 'delegated';
+$this->mail_import_itip();
+}
+/**
+* Import the full payload from a mail message attachment
+*/
+public function mail_import_attachment()
+{
+$uid     = rcube_utils::get_input_value('_uid', rcube_utils::INPUT_POST);
+$mbox    = rcube_utils::get_input_value('_mbox', rcube_utils::INPUT_POST);
+$mime_id = rcube_utils::get_input_value('_part', rcube_utils::INPUT_POST);
+$charset = RCUBE_CHARSET;
+// establish imap connection
+$imap = $this->rc->get_storage();
+$imap->set_folder($mbox);
+if ($uid && $mime_id) {
+$part = $imap->get_message_part($uid, $mime_id);
+if ($part->ctype_parameters['charset'])
+$charset = $part->ctype_parameters['charset'];
+//      $headers = $imap->get_message_headers($uid);
+if ($part) {
+$events = $this->get_ical()->import($part, $charset);
+}
+}
+$success = $existing = 0;
+if (!empty($events)) {
+// find writeable calendar to store event
+$cal_id = !empty($_REQUEST['_calendar']) ? rcube_utils::get_input_value('_calendar', rcube_utils::INPUT_POST) : null;
+$calendars = $this->driver->list_calendars(calendar_driver::FILTER_PERSONAL);
+foreach ($events as $event) {
+// save to calendar
+$calendar = $calendars[$cal_id] ?: $this->get_default_calendar($event['sensitivity']);
+if ($calendar && $calendar['editable'] && $event['_type'] == 'event') {
+$event['calendar'] = $calendar['id'];
+if (!$this->driver->get_event($event['uid'], calendar_driver::FILTER_WRITEABLE)) {
+$success += (bool)$this->driver->new_event($event);
+}
+else {
+$existing++;
+}
+}
+}
+}
+if ($success) {
+$this->rc->output->command('display_message', $this->gettext(array(
+'name' => 'importsuccess',
+'vars' => array('nr' => $success),
+)), 'confirmation');
+}
+else if ($existing) {
+$this->rc->output->command('display_message', $this->gettext('importwarningexists'), 'warning');
+}
+else {
+$this->rc->output->command('display_message', $this->gettext('errorimportingevent'), 'error');
+}
+}
+/**
+* Read email message and return contents for a new event based on that message
+*/
+public function mail_message2event()
+{
+$uid   = rcube_utils::get_input_value('_uid', rcube_utils::INPUT_POST);
+$mbox  = rcube_utils::get_input_value('_mbox', rcube_utils::INPUT_POST);
+$event = array();
+// establish imap connection
+$imap = $this->rc->get_storage();
+$imap->set_folder($mbox);
+$message = new rcube_message($uid);
+if ($message->headers) {
+$event['title'] = trim($message->subject);
+$event['description'] = trim($message->first_text_part());
+$this->load_driver();
+// add a reference to the email message
+if ($msgref = $this->driver->get_message_reference($message->headers, $mbox)) {
+$event['links'] = array($msgref);
+}
+else {
+	// hack around missing database_driver implementation of that method
+	$event['links'] = array(
+				array('mailurl' => "https://hppllc.org/roundcube/?_task=mail&_mbox=Bookings%2FBigHouse%2FPending&_uid=$uid",
+				      'subject' => 'link to original email'));
+}
+// copy mail attachments to event
+if ($message->attachments) {
+$eventid = 'cal-';
+if (!is_array($_SESSION[self::SESSION_KEY]) || $_SESSION[self::SESSION_KEY]['id'] != $eventid) {
+$_SESSION[self::SESSION_KEY] = array();
+$_SESSION[self::SESSION_KEY]['id'] = $eventid;
+$_SESSION[self::SESSION_KEY]['attachments'] = array();
+}
+foreach ((array)$message->attachments as $part) {
+$attachment = array(
+'data' => $imap->get_message_part($uid, $part->mime_id, $part),
+'size' => $part->size,
+'name' => $part->filename,
+'mimetype' => $part->mimetype,
+'group' => $eventid,
+);
+$attachment = $this->rc->plugins->exec_hook('attachment_save', $attachment);
+if ($attachment['status'] && !$attachment['abort']) {
+$id = $attachment['id'];
+$attachment['classname'] = rcube_utils::file2class($attachment['mimetype'], $attachment['name']);
+// store new attachment in session
+unset($attachment['status'], $attachment['abort'], $attachment['data']);
+$_SESSION[self::SESSION_KEY]['attachments'][$id] = $attachment;
+$attachment['id'] = 'rcmfile' . $attachment['id'];  // add prefix to consider it 'new'
+$event['attachments'][] = $attachment;
+}
+}
+}
+$this->rc->output->command('plugin.mail2event_dialog', $event);
+}
+else {
+$this->rc->output->command('display_message', $this->gettext('messageopenerror'), 'error');
+}
+$this->rc->output->send();
+}
+/**
+* Handler for the 'message_compose' plugin hook. This will check for
+* a compose parameter 'calendar_event' and create an attachment with the
+* referenced event in iCal format
+*/
+public function mail_message_compose($args)
+{
+// set the submitted event ID as attachment
+if (!empty($args['param']['calendar_event'])) {
+$this->load_driver();
+list($cal, $id) = explode(':', $args['param']['calendar_event'], 2);
+if ($event = $this->driver->get_event(array('id' => $id, 'calendar' => $cal))) {
+$filename = asciiwords($event['title']);
+if (empty($filename))
+$filename = 'event';
+// save ics to a temp file and register as attachment
+$tmp_path = tempnam($this->rc->config->get('temp_dir'), 'rcmAttmntCal');
+file_put_contents($tmp_path, $this->get_ical()->export(array($event), '', false, array($this->driver, 'get_attachment_body')));
+$args['attachments'][] = array(
+'path'     => $tmp_path,
+'name'     => $filename . '.ics',
+'mimetype' => 'text/calendar',
+'size'     => filesize($tmp_path),
+);
+$args['param']['subject'] = $event['title'];
+}
+}
+return $args;
+}
+/**
+* Get a list of email addresses of the current user (from login and identities)
+*/
+public function get_user_emails()
+{
+return $this->lib->get_user_emails();
+}
+/**
+* Build an absolute URL with the given parameters
+*/
+public function get_url($param = array())
+{
+$param += array('task' => 'calendar');
+return $this->rc->url($param, true, true);
+}
+public function ical_feed_hash($source)
+{
+return base64_encode($this->rc->user->get_username() . ':' . $source);
+}
+/**
+* Handler for user_delete plugin hook
+*/
+public function user_delete($args)
+{
+// delete itipinvitations entries related to this user
+$db = $this->rc->get_dbh();
+$table_itipinvitations = $db->table_name('itipinvitations', true);
+$db->query("DELETE FROM $table_itipinvitations WHERE `user_id` = ?", $args['user']->ID);
+$this->setup();
+$this->load_driver();
+return $this->driver->user_delete($args);
+}
+/**
+* Magic getter for public access to protected members
+*/
+public function __get($name)
+{
+switch ($name) {
+case 'ical':
+return $this->get_ical();
+case 'itip':
+return $this->load_itip();
+case 'driver':
+$this->load_driver();
+return $this->driver;
+}
+return null;
+}
+}

Mercurial > hg > rc1

comparison plugins/calendar/calendar.php @ 3:f6fe4b6ae66a