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diff --git a/plugins/libcalendaring/libcalendaring.php b/plugins/libcalendaring/libcalendaring.php
index 90bb54cf..9b6b3fcc 100644
--- a/plugins/libcalendaring/libcalendaring.php
+++ b/plugins/libcalendaring/libcalendaring.php
@@ -1,1613 +1,1615 @@
<?php
/**
* Library providing common functions for calendaring plugins
*
* Provides utility functions for calendar-related modules such as
* - alarms display and dismissal
* - attachment handling
* - recurrence computation and UI elements
* - ical parsing and exporting
* - itip scheduling protocol
*
* @version @package_version@
* @author Thomas Bruederli <bruederli@kolabsys.com>
*
* Copyright (C) 2012-2015, 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 libcalendaring extends rcube_plugin
{
public $rc;
public $timezone;
public $gmt_offset;
public $dst_active;
public $timezone_offset;
public $ical_parts = [];
public $ical_message;
public $defaults = array(
'calendar_date_format' => "Y-m-d",
'calendar_date_short' => "M-j",
'calendar_date_long' => "F j Y",
'calendar_date_agenda' => "l M-d",
'calendar_time_format' => "H:m",
'calendar_first_day' => 1,
'calendar_first_hour' => 6,
'calendar_date_format_sets' => array(
'Y-m-d' => array('d M Y', 'm-d', 'l m-d'),
'Y/m/d' => array('d M Y', 'm/d', 'l m/d'),
'Y.m.d' => array('d M Y', 'm.d', 'l m.d'),
'd-m-Y' => array('d M Y', 'd-m', 'l d-m'),
'd/m/Y' => array('d M Y', 'd/m', 'l d/m'),
'd.m.Y' => array('d M Y', 'd.m', 'l d.m'),
'j.n.Y' => array('d M Y', 'd.m', 'l d.m'),
'm/d/Y' => array('M d Y', 'm/d', 'l m/d'),
),
);
private static $instance;
private $mail_ical_parser;
/**
* Singleton getter to allow direct access from other plugins
*/
public static function get_instance()
{
if (!self::$instance) {
self::$instance = new libcalendaring(rcube::get_instance()->plugins);
self::$instance->init_instance();
}
return self::$instance;
}
/**
* Initializes class properties
*/
public function init_instance()
{
$this->rc = rcube::get_instance();
// set user's timezone
try {
$this->timezone = new DateTimeZone($this->rc->config->get('timezone', 'GMT'));
}
catch (Exception $e) {
$this->timezone = new DateTimeZone('GMT');
}
$now = new DateTime('now', $this->timezone);
$this->gmt_offset = $now->getOffset();
$this->dst_active = $now->format('I');
$this->timezone_offset = $this->gmt_offset / 3600 - $this->dst_active;
$this->add_texts('localization/', false);
}
/**
* Required plugin startup method
*/
public function init()
{
// extend include path to load bundled lib classes
$include_path = $this->home . '/lib' . PATH_SEPARATOR . ini_get('include_path');
set_include_path($include_path);
self::$instance = $this;
$this->rc = rcube::get_instance();
$this->init_instance();
// include client scripts and styles
if ($this->rc->output) {
// add hook to display alarms
$this->add_hook('refresh', array($this, 'refresh'));
$this->register_action('plugin.alarms', array($this, 'alarms_action'));
$this->register_action('plugin.expand_attendee_group', array($this, 'expand_attendee_group'));
}
// proceed initialization in startup hook
$this->add_hook('startup', array($this, 'startup'));
}
/**
* Startup hook
*/
public function startup($args)
{
if ($this->rc->output && $this->rc->output->type == 'html') {
$this->rc->output->set_env('libcal_settings', $this->load_settings());
$this->include_script('libcalendaring.js');
$this->include_stylesheet($this->local_skin_path() . '/libcal.css');
$this->add_label(
'itipaccepted', 'itiptentative', 'itipdeclined',
'itipdelegated', 'expandattendeegroup', 'expandattendeegroupnodata',
'statusorganizer', 'statusaccepted', 'statusdeclined',
'statusdelegated', 'statusunknown', 'statusneeds-action',
'statustentative', 'statuscompleted', 'statusin-process',
'delegatedto', 'delegatedfrom', 'showmore', 'savein'
);
}
if (($args['task'] ?? null) == 'mail') {
if ($args['action'] == 'show' || $args['action'] == 'preview') {
$this->add_hook('message_load', array($this, 'mail_message_load'));
}
}
}
/**
* Load iCalendar functions
*/
public static function get_ical()
{
$self = self::get_instance();
return new libcalendaring_vcalendar();
}
/**
* Load iTip functions
*/
public static function get_itip($domain = 'libcalendaring')
{
$self = self::get_instance();
return new libcalendaring_itip($self, $domain);
}
/**
* Load recurrence computation engine
*/
public static function get_recurrence($object = null)
{
$self = self::get_instance();
return new libcalendaring_recurrence($self, $object);
}
/**
* Shift dates into user's current timezone
*
* @param mixed Any kind of a date representation (DateTime object, string or unix timestamp)
*
* @return object DateTime object in user's timezone
*/
public function adjust_timezone($dt, $dateonly = false)
{
if (is_numeric($dt)) {
$dt = new DateTime('@'.$dt);
}
else if (is_string($dt)) {
$dt = rcube_utils::anytodatetime($dt);
}
if ($dt instanceof DateTimeInterface && empty($dt->_dateonly) && !$dateonly) {
$dt = $dt->setTimezone($this->timezone);
}
return $dt;
}
/**
*
*/
public function load_settings()
{
$this->date_format_defaults();
$settings = array();
$keys = array('date_format', 'time_format', 'date_short', 'date_long', 'date_agenda');
foreach ($keys as $key) {
$settings[$key] = (string)$this->rc->config->get('calendar_' . $key, $this->defaults['calendar_' . $key]);
$settings[$key] = self::from_php_date_format($settings[$key]);
}
$settings['dates_long'] = $settings['date_long'];
$settings['first_day'] = (int)$this->rc->config->get('calendar_first_day', $this->defaults['calendar_first_day']);
$settings['timezone'] = $this->timezone_offset;
$settings['dst'] = $this->dst_active;
// localization
$settings['days'] = array(
$this->rc->gettext('sunday'), $this->rc->gettext('monday'),
$this->rc->gettext('tuesday'), $this->rc->gettext('wednesday'),
$this->rc->gettext('thursday'), $this->rc->gettext('friday'),
$this->rc->gettext('saturday')
);
$settings['days_short'] = array(
$this->rc->gettext('sun'), $this->rc->gettext('mon'),
$this->rc->gettext('tue'), $this->rc->gettext('wed'),
$this->rc->gettext('thu'), $this->rc->gettext('fri'),
$this->rc->gettext('sat')
);
$settings['months'] = array(
$this->rc->gettext('longjan'), $this->rc->gettext('longfeb'),
$this->rc->gettext('longmar'), $this->rc->gettext('longapr'),
$this->rc->gettext('longmay'), $this->rc->gettext('longjun'),
$this->rc->gettext('longjul'), $this->rc->gettext('longaug'),
$this->rc->gettext('longsep'), $this->rc->gettext('longoct'),
$this->rc->gettext('longnov'), $this->rc->gettext('longdec')
);
$settings['months_short'] = array(
$this->rc->gettext('jan'), $this->rc->gettext('feb'),
$this->rc->gettext('mar'), $this->rc->gettext('apr'),
$this->rc->gettext('may'), $this->rc->gettext('jun'),
$this->rc->gettext('jul'), $this->rc->gettext('aug'),
$this->rc->gettext('sep'), $this->rc->gettext('oct'),
$this->rc->gettext('nov'), $this->rc->gettext('dec')
);
$settings['today'] = $this->rc->gettext('today');
return $settings;
}
/**
* Helper function to set date/time format according to config and user preferences
*/
private function date_format_defaults()
{
static $defaults = array();
// nothing to be done
if (isset($defaults['date_format']))
return;
$defaults['date_format'] = $this->rc->config->get('calendar_date_format', $this->rc->config->get('date_format'));
$defaults['time_format'] = $this->rc->config->get('calendar_time_format', $this->rc->config->get('time_format'));
// override defaults
if ($defaults['date_format'])
$this->defaults['calendar_date_format'] = $defaults['date_format'];
if ($defaults['time_format'])
$this->defaults['calendar_time_format'] = $defaults['time_format'];
// derive format variants from basic date format
$format_sets = $this->rc->config->get('calendar_date_format_sets', $this->defaults['calendar_date_format_sets']);
if ($format_set = $format_sets[$this->defaults['calendar_date_format']]) {
$this->defaults['calendar_date_long'] = $format_set[0];
$this->defaults['calendar_date_short'] = $format_set[1];
$this->defaults['calendar_date_agenda'] = $format_set[2];
}
}
/**
* Compose a date string for the given event
*/
public function event_date_text($event)
{
$fromto = '--';
$is_task = !empty($event['_type']) && $event['_type'] == 'task';
$this->date_format_defaults();
$date_format = self::to_php_date_format($this->rc->config->get('calendar_date_format', $this->defaults['calendar_date_format']));
$time_format = self::to_php_date_format($this->rc->config->get('calendar_time_format', $this->defaults['calendar_time_format']));
$getTimezone = function ($date) {
if ($newTz = $date->getTimezone()) {
return $newTz->getName();
}
return '';
};
$formatDate = function ($date, $format) use ($getTimezone) {
// This is a workaround for the rcmail::format_date() which does not play nice with timezone
$tz = $this->rc->config->get('timezone');
if ($dateTz = $getTimezone($date)) {
$this->rc->config->set('timezone', $dateTz);
}
$result = $this->rc->format_date($date, $format);
$this->rc->config->set('timezone', $tz);
return $result;
};
// handle task objects
if ($is_task && !empty($event['due']) && is_object($event['due'])) {
$fromto = $formatDate($event['due'], !empty($event['due']->_dateonly) ? $date_format : null);
// add timezone information
if ($fromto && empty($event['due']->_dateonly) && ($tz = $getTimezone($event['due']))) {
$fromto .= ' (' . strtr($tz, '_', ' ') . ')';
}
return $fromto;
}
// abort if no valid event dates are given
if (!is_object($event['start']) || !is_a($event['start'], 'DateTime') || !is_object($event['end']) || !is_a($event['end'], 'DateTime')) {
return $fromto;
}
if ($event['allday']) {
$fromto = $formatDate($event['start'], $date_format);
if (($todate = $formatDate($event['end'], $date_format)) != $fromto) {
$fromto .= ' - ' . $todate;
}
}
else if ($event['start']->format('Ymd') === $event['end']->format('Ymd')) {
$fromto = $formatDate($event['start'], $date_format) . ' ' . $formatDate($event['start'], $time_format) .
' - ' . $formatDate($event['end'], $time_format);
}
else {
$fromto = $formatDate($event['start'], $date_format) . ' ' . $formatDate($event['start'], $time_format) .
' - ' . $formatDate($event['end'], $date_format) . ' ' . $formatDate($event['end'], $time_format);
}
// add timezone information
if ($fromto && empty($event['allday']) && ($tz = $getTimezone($event['start']))) {
$fromto .= ' (' . strtr($tz, '_', ' ') . ')';
}
return $fromto;
}
/**
* Render HTML form for alarm configuration
*/
public function alarm_select($attrib, $alarm_types, $absolute_time = true)
{
unset($attrib['name']);
$input_value = new html_inputfield(array('name' => 'alarmvalue[]', 'class' => 'edit-alarm-value form-control', 'size' => 3));
$input_date = new html_inputfield(array('name' => 'alarmdate[]', 'class' => 'edit-alarm-date form-control', 'size' => 10));
$input_time = new html_inputfield(array('name' => 'alarmtime[]', 'class' => 'edit-alarm-time form-control', 'size' => 6));
$select_type = new html_select(array('name' => 'alarmtype[]', 'class' => 'edit-alarm-type form-control', 'id' => $attrib['id']));
$select_offset = new html_select(array('name' => 'alarmoffset[]', 'class' => 'edit-alarm-offset form-control'));
$select_related = new html_select(array('name' => 'alarmrelated[]', 'class' => 'edit-alarm-related form-control'));
$object_type = !empty($attrib['_type']) ? $attrib['_type'] : 'event';
$select_type->add($this->gettext('none'), '');
foreach ($alarm_types as $type) {
$select_type->add($this->gettext(strtolower("alarm{$type}option")), $type);
}
foreach (array('-M','-H','-D','+M','+H','+D') as $trigger) {
$select_offset->add($this->gettext('trigger' . $trigger), $trigger);
}
$select_offset->add($this->gettext('trigger0'), '0');
if ($absolute_time) {
$select_offset->add($this->gettext('trigger@'), '@');
}
$select_related->add($this->gettext('relatedstart'), 'start');
$select_related->add($this->gettext('relatedend' . $object_type), 'end');
// pre-set with default values from user settings
$preset = self::parse_alarm_value($this->rc->config->get('calendar_default_alarm_offset', '-15M'));
$hidden = array('style' => 'display:none');
return html::span('edit-alarm-set',
$select_type->show($this->rc->config->get('calendar_default_alarm_type', '')) . ' ' .
html::span(array('class' => 'edit-alarm-values input-group', 'style' => 'display:none'),
$input_value->show($preset[0]) . ' ' .
$select_offset->show($preset[1]) . ' ' .
$select_related->show() . ' ' .
$input_date->show('', $hidden) . ' ' .
$input_time->show('', $hidden)
)
);
}
/**
* Get a list of email addresses of the given user (from login and identities)
*
* @param string User Email (default to current user)
*
* @return array Email addresses related to the user
*/
public function get_user_emails($user = null)
{
static $_emails = array();
if (empty($user)) {
$user = $this->rc->user->get_username();
}
// return cached result
if (isset($_emails[$user])) {
return $_emails[$user];
}
$emails = array($user);
$plugin = $this->rc->plugins->exec_hook('calendar_user_emails', array('emails' => $emails));
$emails = array_map('strtolower', $plugin['emails']);
// add all emails from the current user's identities
if (!$plugin['abort'] && ($user == $this->rc->user->get_username())) {
foreach ($this->rc->user->list_emails() as $identity) {
$emails[] = strtolower($identity['email']);
}
}
$_emails[$user] = array_unique($emails);
return $_emails[$user];
}
/**
* Set the given participant status to the attendee matching the current user's identities
* Unsets 'rsvp' flag too.
*
* @param array &$event Event data
* @param string $status The PARTSTAT value to set
* @param bool $recursive Recurive call
*
* @return mixed Email address of the updated attendee or False if none matching found
*/
public function set_partstat(&$event, $status, $recursive = true)
{
$success = false;
$emails = $this->get_user_emails();
foreach ((array)$event['attendees'] as $i => $attendee) {
if ($attendee['email'] && in_array(strtolower($attendee['email']), $emails)) {
$event['attendees'][$i]['status'] = strtoupper($status);
unset($event['attendees'][$i]['rsvp']);
$success = $attendee['email'];
}
}
// apply partstat update to each existing exception
if ($event['recurrence'] && is_array($event['recurrence']['EXCEPTIONS'])) {
foreach ($event['recurrence']['EXCEPTIONS'] as $i => $exception) {
$this->set_partstat($event['recurrence']['EXCEPTIONS'][$i], $status, false);
}
// set link to top-level exceptions
$event['exceptions'] = &$event['recurrence']['EXCEPTIONS'];
}
return $success;
}
/********* Alarms handling *********/
/**
* Helper function to convert alarm trigger strings
* into two-field values (e.g. "-45M" => 45, "-M")
*/
public static function parse_alarm_value($val)
{
if ($val[0] == '@') {
return array(new DateTime($val));
}
else if (preg_match('/([+-]?)P?(T?\d+[HMSDW])+/', $val, $m) && preg_match_all('/T?(\d+)([HMSDW])/', $val, $m2, PREG_SET_ORDER)) {
if ($m[1] == '')
$m[1] = '+';
foreach ($m2 as $seg) {
$prefix = $seg[2] == 'D' || $seg[2] == 'W' ? 'P' : 'PT';
if ($seg[1] > 0) { // ignore zero values
// convert seconds to minutes
if ($seg[2] == 'S') {
$seg[2] = 'M';
$seg[1] = max(1, round($seg[1]/60));
}
return array($seg[1], $m[1].$seg[2], $m[1].$seg[1].$seg[2], $m[1].$prefix.$seg[1].$seg[2]);
}
}
// return zero value nevertheless
return array($seg[1], $m[1].$seg[2], $m[1].$seg[1].$seg[2], $m[1].$prefix.$seg[1].$seg[2]);
}
return false;
}
/**
* Convert the alarms list items to be processed on the client
*/
public static function to_client_alarms($valarms)
{
return array_map(function($alarm) {
if ($alarm['trigger'] instanceof DateTimeInterface) {
$alarm['trigger'] = '@' . $alarm['trigger']->format('U');
}
else if ($trigger = libcalendaring::parse_alarm_value($alarm['trigger'])) {
$alarm['trigger'] = $trigger[2];
}
return $alarm;
}, (array)$valarms);
}
/**
* Process the alarms values submitted by the client
*/
public static function from_client_alarms($valarms)
{
return array_map(function($alarm){
if ($alarm['trigger'][0] == '@') {
try {
$alarm['trigger'] = new DateTime($alarm['trigger']);
$alarm['trigger']->setTimezone(new DateTimeZone('UTC'));
}
catch (Exception $e) { /* handle this ? */ }
}
else if ($trigger = libcalendaring::parse_alarm_value($alarm['trigger'])) {
$alarm['trigger'] = $trigger[3];
}
return $alarm;
}, (array)$valarms);
}
/**
* Render localized text for alarm settings
*/
public static function alarms_text($alarms)
{
if (is_array($alarms) && is_array($alarms[0])) {
$texts = array();
foreach ($alarms as $alarm) {
if ($text = self::alarm_text($alarm))
$texts[] = $text;
}
return join(', ', $texts);
}
else {
return self::alarm_text($alarms);
}
}
/**
* Render localized text for a single alarm property
*/
public static function alarm_text($alarm)
{
$related = null;
if (is_string($alarm)) {
list($trigger, $action) = explode(':', $alarm);
}
else {
$trigger = $alarm['trigger'];
$action = $alarm['action'];
if (!empty($alarm['related'])) {
$related = $alarm['related'];
}
}
$text = '';
$rcube = rcube::get_instance();
switch ($action) {
case 'EMAIL':
$text = $rcube->gettext('libcalendaring.alarmemail');
break;
case 'DISPLAY':
$text = $rcube->gettext('libcalendaring.alarmdisplay');
break;
case 'AUDIO':
$text = $rcube->gettext('libcalendaring.alarmaudio');
break;
}
if ($trigger instanceof DateTimeInterface) {
$text .= ' ' . $rcube->gettext(array(
'name' => 'libcalendaring.alarmat',
'vars' => array('datetime' => $rcube->format_date($trigger))
));
}
else if (preg_match('/@(\d+)/', $trigger, $m)) {
$text .= ' ' . $rcube->gettext(array(
'name' => 'libcalendaring.alarmat',
'vars' => array('datetime' => $rcube->format_date($m[1]))
));
}
else if ($val = self::parse_alarm_value($trigger)) {
$r = $related && strtoupper($related) == 'END' ? 'end' : '';
// TODO: for all-day events say 'on date of event at XX' ?
if ($val[0] == 0) {
$text .= ' ' . $rcube->gettext('libcalendaring.triggerattime' . $r);
}
else {
$label = 'libcalendaring.trigger' . $r . $val[1];
$text .= ' ' . intval($val[0]) . ' ' . $rcube->gettext($label);
}
}
else {
return false;
}
return $text;
}
/**
* Get the next alarm (time & action) for the given event
*
* @param array Record data
* @return array Hash array with alarm time/type or null if no alarms are configured
*/
public static function get_next_alarm($rec, $type = 'event')
{
if (
(empty($rec['valarms']) && empty($rec['alarms']))
|| !empty($rec['cancelled'])
|| (!empty($rec['status']) && $rec['status'] == 'CANCELLED')
) {
return null;
}
if ($type == 'task') {
$timezone = self::get_instance()->timezone;
if (!empty($rec['startdate'])) {
$time = !empty($rec['starttime']) ? $rec['starttime'] : '12:00';
$rec['start'] = new DateTime($rec['startdate'] . ' ' . $time, $timezone);
}
if (!empty($rec['date'])) {
$time = !empty($rec['time']) ? $rec['time'] : '12:00';
$rec[!empty($rec['start']) ? 'end' : 'start'] = new DateTime($rec['date'] . ' ' . $time, $timezone);
}
}
if (empty($rec['end'])) {
$rec['end'] = $rec['start'];
}
// support legacy format
if (empty($rec['valarms'])) {
list($trigger, $action) = explode(':', $rec['alarms'], 2);
if ($alarm = self::parse_alarm_value($trigger)) {
$rec['valarms'] = array(array('action' => $action, 'trigger' => $alarm[3] ?: $alarm[0]));
}
}
// alarm ID eq. record ID by default to keep backwards compatibility
$alarm_id = isset($rec['id']) ? $rec['id'] : null;
$alarm_prop = null;
$expires = new DateTime('now - 12 hours');
$notify_at = null;
// handle multiple alarms
foreach ($rec['valarms'] as $alarm) {
$notify_time = null;
if ($alarm['trigger'] instanceof DateTimeInterface) {
$notify_time = $alarm['trigger'];
}
else if (is_string($alarm['trigger'])) {
$refdate = !empty($alarm['related']) && $alarm['related'] == 'END' ? $rec['end'] : $rec['start'];
// abort if no reference date is available to compute notification time
if (!is_a($refdate, 'DateTime')) {
continue;
}
// TODO: for all-day events, take start @ 00:00 as reference date ?
try {
$interval = new DateInterval(trim($alarm['trigger'], '+-'));
$interval->invert = $alarm['trigger'][0] == '-';
$notify_time = clone $refdate;
$notify_time->add($interval);
}
catch (Exception $e) {
rcube::raise_error($e, true);
continue;
}
}
if ($notify_time && (!$notify_at || ($notify_time > $notify_at && $notify_time > $expires))) {
$notify_at = $notify_time;
$action = isset($alarm['action']) ? $alarm['action'] : null;
$alarm_prop = $alarm;
// generate a unique alarm ID if multiple alarms are set
if (count($rec['valarms']) > 1) {
$rec_id = substr(md5(isset($rec['id']) ? $rec['id'] : 'none'), 0, 16);
$alarm_id = $rec_id . '-' . $notify_at->format('Ymd\THis');
}
}
}
return !$notify_at ? null : array(
'time' => $notify_at->format('U'),
'action' => !empty($action) ? strtoupper($action) : 'DISPLAY',
'id' => $alarm_id,
'prop' => $alarm_prop,
);
}
/**
* Handler for keep-alive requests
* This will check for pending notifications and pass them to the client
*/
public function refresh($attr)
{
// collect pending alarms from all providers (e.g. calendar, tasks)
$plugin = $this->rc->plugins->exec_hook('pending_alarms', array(
'time' => time(),
'alarms' => array(),
));
if (!$plugin['abort'] && !empty($plugin['alarms'])) {
// make sure texts and env vars are available on client
$this->add_texts('localization/', true);
$this->rc->output->add_label('close');
$this->rc->output->set_env('snooze_select', $this->snooze_select());
$this->rc->output->command('plugin.display_alarms', $this->_alarms_output($plugin['alarms']));
}
}
/**
* Handler for alarm dismiss/snooze requests
*/
public function alarms_action()
{
// $action = rcube_utils::get_input_value('action', rcube_utils::INPUT_GPC);
$data = rcube_utils::get_input_value('data', rcube_utils::INPUT_POST, true);
$data['ids'] = explode(',', $data['id']);
$plugin = $this->rc->plugins->exec_hook('dismiss_alarms', $data);
if (!empty($plugin['success'])) {
$this->rc->output->show_message('successfullysaved', 'confirmation');
}
else {
$this->rc->output->show_message('calendar.errorsaving', 'error');
}
}
/**
* Generate reduced and streamlined output for pending alarms
*/
private function _alarms_output($alarms)
{
$out = array();
foreach ($alarms as $alarm) {
$out[] = array(
'id' => $alarm['id'],
'start' => !empty($alarm['start']) ? $this->adjust_timezone($alarm['start'])->format('c') : '',
'end' => !empty($alarm['end'])? $this->adjust_timezone($alarm['end'])->format('c') : '',
'allDay' => !empty($alarm['allday']),
'action' => $alarm['action'],
'title' => $alarm['title'],
'location' => $alarm['location'],
'calendar' => $alarm['calendar'],
);
}
return $out;
}
/**
* Render a dropdown menu to choose snooze time
*/
private function snooze_select($attrib = array())
{
$steps = array(
5 => 'repeatinmin',
10 => 'repeatinmin',
15 => 'repeatinmin',
20 => 'repeatinmin',
30 => 'repeatinmin',
60 => 'repeatinhr',
120 => 'repeatinhrs',
1440 => 'repeattomorrow',
10080 => 'repeatinweek',
);
$items = array();
foreach ($steps as $n => $label) {
$items[] = html::tag('li', null, html::a(array('href' => "#" . ($n * 60), 'class' => 'active'),
$this->gettext(array('name' => $label, 'vars' => array('min' => $n % 60, 'hrs' => intval($n / 60))))));
}
return html::tag('ul', $attrib + array('class' => 'toolbarmenu menu'), join("\n", $items), html::$common_attrib);
}
/********* Recurrence rules handling ********/
/**
* Render localized text describing the recurrence rule of an event
*/
public function recurrence_text($rrule)
{
$limit = 10;
$exdates = array();
$format = $this->rc->config->get('calendar_date_format', $this->defaults['calendar_date_format']);
$format = self::to_php_date_format($format);
$format_fn = function($dt) use ($format) {
return rcmail::get_instance()->format_date($dt, $format);
};
if (!empty($rrule['EXDATE']) && is_array($rrule['EXDATE'])) {
$exdates = array_map($format_fn, $rrule['EXDATE']);
}
if (empty($rrule['FREQ']) && !empty($rrule['RDATE'])) {
$rdates = array_map($format_fn, $rrule['RDATE']);
$more = false;
if (!empty($exdates)) {
$rdates = array_diff($rdates, $exdates);
}
if (count($rdates) > $limit) {
$rdates = array_slice($rdates, 0, $limit);
$more = true;
}
return $this->gettext('ondate') . ' ' . join(', ', $rdates) . ($more ? '...' : '');
}
$output = sprintf('%s %d ', $this->gettext('every'), !empty($rrule['INTERVAL']) ? $rrule['INTERVAL'] : 1);
switch ($rrule['FREQ']) {
case 'DAILY':
$output .= $this->gettext('days');
break;
case 'WEEKLY':
$output .= $this->gettext('weeks');
break;
case 'MONTHLY':
$output .= $this->gettext('months');
break;
case 'YEARLY':
$output .= $this->gettext('years');
break;
}
if (!empty($rrule['COUNT'])) {
$until = $this->gettext(array('name' => 'forntimes', 'vars' => array('nr' => $rrule['COUNT'])));
}
else if (!empty($rrule['UNTIL'])) {
$until = $this->gettext('recurrencend') . ' ' . $this->rc->format_date($rrule['UNTIL'], $format);
}
else {
$until = $this->gettext('forever');
}
$output .= ', ' . $until;
if (!empty($exdates)) {
$more = false;
if (count($exdates) > $limit) {
$exdates = array_slice($exdates, 0, $limit);
$more = true;
}
$output .= '; ' . $this->gettext('except') . ' ' . join(', ', $exdates) . ($more ? '...' : '');
}
return $output;
}
/**
* Generate the form for recurrence settings
*/
public function recurrence_form($attrib = array())
{
switch ($attrib['part']) {
// frequency selector
case 'frequency':
$select = new html_select(array('name' => 'frequency', 'id' => 'edit-recurrence-frequency', 'class' => 'form-control'));
$select->add($this->gettext('never'), '');
$select->add($this->gettext('daily'), 'DAILY');
$select->add($this->gettext('weekly'), 'WEEKLY');
$select->add($this->gettext('monthly'), 'MONTHLY');
$select->add($this->gettext('yearly'), 'YEARLY');
$select->add($this->gettext('rdate'), 'RDATE');
$html = html::label(array('for' => 'edit-recurrence-frequency', 'class' => 'col-form-label col-sm-2'), $this->gettext('frequency'))
. html::div('col-sm-10', $select->show(''));
break;
// daily recurrence
case 'daily':
$select = $this->interval_selector(array('name' => 'interval', 'class' => 'edit-recurrence-interval form-control', 'id' => 'edit-recurrence-interval-daily'));
$html = html::div($attrib, html::label(array('for' => 'edit-recurrence-interval-daily', 'class' => 'col-form-label col-sm-2'), $this->gettext('every'))
. html::div('col-sm-10 input-group', $select->show(1) . html::span('label-after input-group-append', html::span('input-group-text', $this->gettext('days')))));
break;
// weekly recurrence form
case 'weekly':
$select = $this->interval_selector(array('name' => 'interval', 'class' => 'edit-recurrence-interval form-control', 'id' => 'edit-recurrence-interval-weekly'));
$html = html::div($attrib, html::label(array('for' => 'edit-recurrence-interval-weekly', 'class' => 'col-form-label col-sm-2'), $this->gettext('every'))
. html::div('col-sm-10 input-group', $select->show(1) . html::span('label-after input-group-append', html::span('input-group-text', $this->gettext('weeks')))));
// weekday selection
$daymap = array('sun','mon','tue','wed','thu','fri','sat');
$checkbox = new html_checkbox(array('name' => 'byday', 'class' => 'edit-recurrence-weekly-byday'));
$first = $this->rc->config->get('calendar_first_day', 1);
for ($weekdays = '', $j = $first; $j <= $first+6; $j++) {
$d = $j % 7;
$weekdays .= html::label(array('class' => 'weekday'),
$checkbox->show('', array('value' => strtoupper(substr($daymap[$d], 0, 2)))) .
$this->gettext($daymap[$d])
) . ' ';
}
$html .= html::div($attrib, html::label(array('class' => 'col-form-label col-sm-2'), $this->gettext('bydays'))
. html::div('col-sm-10 form-control-plaintext', $weekdays));
break;
// monthly recurrence form
case 'monthly':
$select = $this->interval_selector(array('name' => 'interval', 'class' => 'edit-recurrence-interval form-control', 'id' => 'edit-recurrence-interval-monthly'));
$html = html::div($attrib, html::label(array('for' => 'edit-recurrence-interval-monthly', 'class' => 'col-form-label col-sm-2'), $this->gettext('every'))
. html::div('col-sm-10 input-group', $select->show(1) . html::span('label-after input-group-append', html::span('input-group-text', $this->gettext('months')))));
$checkbox = new html_checkbox(array('name' => 'bymonthday', 'class' => 'edit-recurrence-monthly-bymonthday'));
for ($monthdays = '', $d = 1; $d <= 31; $d++) {
$monthdays .= html::label(array('class' => 'monthday'), $checkbox->show('', array('value' => $d)) . $d);
$monthdays .= $d % 7 ? ' ' : html::br();
}
// rule selectors
$radio = new html_radiobutton(array('name' => 'repeatmode', 'class' => 'edit-recurrence-monthly-mode'));
$table = new html_table(array('cols' => 2, 'border' => 0, 'cellpadding' => 0, 'class' => 'formtable'));
$table->add('label', html::label(null, $radio->show('BYMONTHDAY', array('value' => 'BYMONTHDAY')) . ' ' . $this->gettext('each')));
$table->add(null, $monthdays);
$table->add('label', html::label(null, $radio->show('', array('value' => 'BYDAY')) . ' ' . $this->gettext('every')));
$table->add('recurrence-onevery', $this->rrule_selectors($attrib['part']));
$html .= html::div($attrib, html::label(array('class' => 'col-form-label col-sm-2'), $this->gettext('bydays'))
. html::div('col-sm-10 form-control-plaintext', $table->show()));
break;
// annually recurrence form
case 'yearly':
$select = $this->interval_selector(array('name' => 'interval', 'class' => 'edit-recurrence-interval form-control', 'id' => 'edit-recurrence-interval-yearly'));
$html = html::div($attrib, html::label(array('for' => 'edit-recurrence-interval-yearly', 'class' => 'col-form-label col-sm-2'), $this->gettext('every'))
. html::div('col-sm-10 input-group', $select->show(1) . html::span('label-after input-group-append', html::span('input-group-text', $this->gettext('years')))));
// month selector
$monthmap = array('','jan','feb','mar','apr','may','jun','jul','aug','sep','oct','nov','dec');
$checkbox = new html_checkbox(array('name' => 'bymonth', 'class' => 'edit-recurrence-yearly-bymonth'));
for ($months = '', $m = 1; $m <= 12; $m++) {
$months .= html::label(array('class' => 'month'), $checkbox->show(null, array('value' => $m)) . $this->gettext($monthmap[$m]));
$months .= $m % 4 ? ' ' : html::br();
}
$html .= html::div($attrib, html::label(array('class' => 'col-form-label col-sm-2'), $this->gettext('bymonths'))
. html::div('col-sm-10 form-control-plaintext',
html::div(array('id' => 'edit-recurrence-yearly-bymonthblock'), $months)
. html::div('recurrence-onevery', $this->rrule_selectors($attrib['part'], '---'))
));
break;
// end of recurrence form
case 'until':
$radio = new html_radiobutton(array('name' => 'repeat', 'class' => 'edit-recurrence-until'));
$select = $this->interval_selector(array('name' => 'times', 'id' => 'edit-recurrence-repeat-times', 'class' => 'form-control'));
$input = new html_inputfield(array('name' => 'untildate', 'id' => 'edit-recurrence-enddate', 'size' => '10', 'class' => 'form-control datepicker'));
$html = html::div('line first',
$radio->show('', array('value' => '', 'id' => 'edit-recurrence-repeat-forever'))
. ' ' . html::label('edit-recurrence-repeat-forever', $this->gettext('forever'))
);
$label = $this->gettext('ntimes');
if (strpos($label, '$') === 0) {
$label = str_replace('$n', '', $label);
$group = $select->show(1)
. html::span('input-group-append', html::span('input-group-text', rcube::Q($label)));
}
else {
$label = str_replace('$n', '', $label);
$group = html::span('input-group-prepend', html::span('input-group-text', rcube::Q($label)))
. $select->show(1);
}
$html .= html::div('line',
$radio->show('', array('value' => 'count', 'id' => 'edit-recurrence-repeat-count'))
. ' ' . html::label('edit-recurrence-repeat-count', $this->gettext('for'))
. ' ' . html::span('input-group', $group)
);
$html .= html::div('line',
$radio->show('', array('value' => 'until', 'id' => 'edit-recurrence-repeat-until', 'aria-label' => $this->gettext('untilenddate')))
. ' ' . html::label('edit-recurrence-repeat-until', $this->gettext('untildate'))
. ' ' . $input->show('', array('aria-label' => $this->gettext('untilenddate')))
);
$html = html::div($attrib, html::label(array('class' => 'col-form-label col-sm-2'), ucfirst($this->gettext('recurrencend')))
. html::div('col-sm-10', $html));
break;
case 'rdate':
$ul = html::tag('ul', array('id' => 'edit-recurrence-rdates', 'class' => 'recurrence-rdates'), '');
$input = new html_inputfield(array('name' => 'rdate', 'id' => 'edit-recurrence-rdate-input', 'size' => "10", 'class' => 'form-control datepicker'));
$button = new html_inputfield(array('type' => 'button', 'class' => 'button add', 'value' => $this->gettext('addrdate')));
$html = html::div($attrib, html::label(array('class' => 'col-form-label col-sm-2', 'for' => 'edit-recurrence-rdate-input'), $this->gettext('bydates'))
. html::div('col-sm-10', $ul . html::div('inputform', $input->show() . $button->show())));
break;
}
return $html;
}
/**
* Input field for interval selection
*/
private function interval_selector($attrib)
{
$select = new html_select($attrib);
$select->add(range(1,30), range(1,30));
return $select;
}
/**
* Drop-down menus for recurrence rules like "each last sunday of"
*/
private function rrule_selectors($part, $noselect = null)
{
// rule selectors
$select_prefix = new html_select(array('name' => 'bydayprefix', 'id' => "edit-recurrence-$part-prefix", 'class' => 'form-control'));
if ($noselect) $select_prefix->add($noselect, '');
$select_prefix->add(array(
$this->gettext('first'),
$this->gettext('second'),
$this->gettext('third'),
$this->gettext('fourth'),
$this->gettext('last')
),
array(1, 2, 3, 4, -1));
$select_wday = new html_select(array('name' => 'byday', 'id' => "edit-recurrence-$part-byday", 'class' => 'form-control'));
if ($noselect) $select_wday->add($noselect, '');
$daymap = array('sunday','monday','tuesday','wednesday','thursday','friday','saturday');
$first = $this->rc->config->get('calendar_first_day', 1);
for ($j = $first; $j <= $first+6; $j++) {
$d = $j % 7;
$select_wday->add($this->gettext($daymap[$d]), strtoupper(substr($daymap[$d], 0, 2)));
}
return $select_prefix->show() . '&nbsp;' . $select_wday->show();
}
/**
* Convert the recurrence settings to be processed on the client
*/
public function to_client_recurrence($recurrence, $allday = false)
{
if (!empty($recurrence['UNTIL'])) {
$recurrence['UNTIL'] = $this->adjust_timezone($recurrence['UNTIL'], $allday)->format('c');
}
// format RDATE values
if (!empty($recurrence['RDATE'])) {
$libcal = $this;
$recurrence['RDATE'] = array_map(function($rdate) use ($libcal) {
return $libcal->adjust_timezone($rdate, true)->format('c');
}, (array) $recurrence['RDATE']);
}
unset($recurrence['EXCEPTIONS']);
return $recurrence;
}
/**
* Process the alarms values submitted by the client
*/
public function from_client_recurrence($recurrence, $start = null)
{
if (is_array($recurrence) && !empty($recurrence['UNTIL'])) {
$recurrence['UNTIL'] = new DateTime($recurrence['UNTIL'], $this->timezone);
}
if (is_array($recurrence) && !empty($recurrence['RDATE'])) {
$tz = $this->timezone;
$recurrence['RDATE'] = array_map(function($rdate) use ($tz, $start) {
try {
$dt = new DateTime($rdate, $tz);
if (is_a($start, 'DateTime'))
$dt->setTime($start->format('G'), $start->format('i'));
return $dt;
}
catch (Exception $e) {
return null;
}
}, $recurrence['RDATE']);
}
return $recurrence;
}
/********* iTip message detection *********/
/**
* Check mail message structure of there are .ics files attached
*/
public function mail_message_load($p)
{
+ $this->ical_parts = [];
+ $this->mail_ical_parser = null;
$this->ical_message = $p['object'];
$itip_part = null;
// check all message parts for .ics files
foreach ((array)$this->ical_message->mime_parts as $part) {
if (self::part_is_vcalendar($part, $this->ical_message)) {
if (!empty($part->ctype_parameters['method'])) {
$itip_part = $part->mime_id;
}
else {
$this->ical_parts[] = $part->mime_id;
}
}
}
// priorize part with method parameter
if ($itip_part) {
$this->ical_parts = array($itip_part);
}
}
/**
* Getter for the parsed iCal objects attached to the current email message
*
* @return object libcalendaring_vcalendar parser instance with the parsed objects
*/
public function get_mail_ical_objects()
{
// create parser and load ical objects
if (!$this->mail_ical_parser) {
$this->mail_ical_parser = $this->get_ical();
foreach ($this->ical_parts as $mime_id) {
$part = $this->ical_message->mime_parts[$mime_id];
$charset = $part->ctype_parameters['charset'] ?: RCUBE_CHARSET;
$this->mail_ical_parser->import($this->ical_message->get_part_body($mime_id, true), $charset);
// check if the parsed object is an instance of a recurring event/task
array_walk($this->mail_ical_parser->objects, 'libcalendaring::identify_recurrence_instance');
// stop on the part that has an iTip method specified
if (count($this->mail_ical_parser->objects) && $this->mail_ical_parser->method) {
$this->mail_ical_parser->message_date = $this->ical_message->headers->date;
$this->mail_ical_parser->mime_id = $mime_id;
// store the message's sender address for comparisons
$from = rcube_mime::decode_address_list($this->ical_message->headers->from, 1, true, null, true);
$this->mail_ical_parser->sender = !empty($from) ? $from[1] : '';
if (!empty($this->mail_ical_parser->sender)) {
foreach ($this->mail_ical_parser->objects as $i => $object) {
$this->mail_ical_parser->objects[$i]['_sender'] = $this->mail_ical_parser->sender;
$this->mail_ical_parser->objects[$i]['_sender_utf'] = rcube_utils::idn_to_utf8($this->mail_ical_parser->sender);
}
}
break;
}
}
}
return $this->mail_ical_parser;
}
/**
* Read the given mime message from IMAP and parse ical data
*
* @param string Mailbox name
* @param string Message UID
* @param string Message part ID and object index (e.g. '1.2:0')
* @param string Object type filter (optional)
*
* @return array Hash array with the parsed iCal
*/
public function mail_get_itip_object($mbox, $uid, $mime_id, $type = null)
{
$charset = RCUBE_CHARSET;
// establish imap connection
$imap = $this->rc->get_storage();
$imap->set_folder($mbox);
if ($uid && $mime_id) {
list($mime_id, $index) = explode(':', $mime_id);
$part = $imap->get_message_part($uid, $mime_id);
$headers = $imap->get_message_headers($uid);
$parser = $this->get_ical();
if (!empty($part->ctype_parameters['charset'])) {
$charset = $part->ctype_parameters['charset'];
}
if ($part) {
$objects = $parser->import($part, $charset);
}
}
// successfully parsed events/tasks?
if (!empty($objects) && ($object = $objects[$index]) && (!$type || $object['_type'] == $type)) {
if ($parser->method)
$object['_method'] = $parser->method;
// store the message's sender address for comparisons
$from = rcube_mime::decode_address_list($headers->from, 1, true, null, true);
$object['_sender'] = !empty($from) ? $from[1] : '';
$object['_sender_utf'] = rcube_utils::idn_to_utf8($object['_sender']);
// check if this is an instance of a recurring event/task
self::identify_recurrence_instance($object);
return $object;
}
return null;
}
/**
* Checks if specified message part is a vcalendar data
*
* @param rcube_message_part Part object
* @param rcube_message Message object
*
* @return boolean True if part is of type vcard
*/
public static function part_is_vcalendar($part, $message = null)
{
// First check if the message is "valid" (i.e. not multipart/report)
if ($message) {
$level = explode('.', $part->mime_id);
while (array_pop($level) !== null) {
$id = join('.', $level) ?: 0;
$parent = !empty($message->mime_parts[$id]) ? $message->mime_parts[$id] : null;
if ($parent && $parent->mimetype == 'multipart/report') {
return false;
}
}
}
return (
in_array($part->mimetype, array('text/calendar', 'text/x-vcalendar', 'application/ics')) ||
// Apple sends files as application/x-any (!?)
($part->mimetype == 'application/x-any' && !empty($part->filename) && preg_match('/\.ics$/i', $part->filename))
);
}
/**
* Single occourrences of recurring events are identified by their RECURRENCE-ID property
* in iCal which is represented as 'recurrence_date' in our internal data structure.
*
* Check if such a property exists and derive the '_instance' identifier and '_savemode'
* attributes which are used in the storage backend to identify the nested exception item.
*/
public static function identify_recurrence_instance(&$object)
{
// for savemode=all, remove recurrence instance identifiers
if (!empty($object['_savemode']) && $object['_savemode'] == 'all' && !empty($object['recurrence'])) {
unset($object['_instance'], $object['recurrence_date']);
}
// set instance and 'savemode' according to recurrence-id
else if (!empty($object['recurrence_date']) && $object['recurrence_date'] instanceof DateTimeInterface) {
$object['_instance'] = self::recurrence_instance_identifier($object);
$object['_savemode'] = !empty($object['thisandfuture']) ? 'future' : 'current';
}
else if (!empty($object['recurrence_id']) && !empty($object['_instance'])) {
if (strlen($object['_instance']) > 4) {
$object['recurrence_date'] = rcube_utils::anytodatetime($object['_instance'], $object['start']->getTimezone());
}
else {
$object['recurrence_date'] = clone $object['start'];
}
}
}
/**
* Return a date() format string to render identifiers for recurrence instances
*
* @param array Hash array with event properties
* @return string Format string
*/
public static function recurrence_id_format($event)
{
return !empty($event['allday']) ? 'Ymd' : 'Ymd\THis';
}
/**
* Return the identifer for the given instance of a recurring event
*
* @param array Hash array with event properties
* @param bool All-day flag from the main event
*
* @return mixed Format string or null if identifier cannot be generated
*/
public static function recurrence_instance_identifier($event, $allday = null)
{
$instance_date = !empty($event['recurrence_date']) ? $event['recurrence_date'] : $event['start'];
if ($instance_date instanceof DateTimeInterface) {
// According to RFC5545 (3.8.4.4) RECURRENCE-ID format should
// be date/date-time depending on the main event type, not the exception
if ($allday === null) {
$allday = !empty($event['allday']);
}
return $instance_date->format($allday ? 'Ymd' : 'Ymd\THis');
}
}
/**
* Check if a specified event is "identical" to the specified recurrence exception
*
* @param array Hash array with occurrence properties
* @param array Hash array with exception properties
*
* @return bool
*/
public static function is_recurrence_exception($event, $exception)
{
$instance_date = !empty($event['recurrence_date']) ? $event['recurrence_date'] : $event['start'];
$exception_date = !empty($exception['recurrence_date']) ? $exception['recurrence_date'] : $exception['start'];
if ($instance_date instanceof DateTimeInterface && $exception_date instanceof DateTimeInterface) {
// Timezone???
return $instance_date->format('Ymd') === $exception_date->format('Ymd');
}
return false;
}
/********* Attendee handling functions *********/
/**
* Handler for attendee group expansion requests
*/
public function expand_attendee_group()
{
$id = rcube_utils::get_input_value('id', rcube_utils::INPUT_POST);
$data = rcube_utils::get_input_value('data', rcube_utils::INPUT_POST, true);
$result = array('id' => $id, 'members' => array());
$maxnum = 500;
// iterate over all autocomplete address books (we don't know the source of the group)
foreach ((array)$this->rc->config->get('autocomplete_addressbooks', 'sql') as $abook_id) {
if (($abook = $this->rc->get_address_book($abook_id)) && $abook->groups) {
foreach ($abook->list_groups($data['name'], 1) as $group) {
// this is the matching group to expand
if (in_array($data['email'], (array)$group['email'])) {
$abook->set_pagesize($maxnum);
$abook->set_group($group['ID']);
// get all members
$res = $abook->list_records($this->rc->config->get('contactlist_fields'));
// handle errors (e.g. sizelimit, timelimit)
if ($abook->get_error()) {
$result['error'] = $this->rc->gettext('expandattendeegrouperror', 'libcalendaring');
$res = false;
}
// check for maximum number of members (we don't wanna bloat the UI too much)
else if ($res->count > $maxnum) {
$result['error'] = $this->rc->gettext('expandattendeegroupsizelimit', 'libcalendaring');
$res = false;
}
while ($res && ($member = $res->iterate())) {
$emails = (array)$abook->get_col_values('email', $member, true);
if (!empty($emails) && ($email = array_shift($emails))) {
$result['members'][] = array(
'email' => $email,
'name' => rcube_addressbook::compose_list_name($member),
);
}
}
break 2;
}
}
}
}
$this->rc->output->command('plugin.expand_attendee_callback', $result);
}
/**
* Merge attendees of the old and new event version
* with keeping current user and his delegatees status
*
* @param array &$new New object data
* @param array $old Old object data
* @param bool $status New status of the current user
*/
public function merge_attendees(&$new, $old, $status = null)
{
if (empty($status)) {
$emails = $this->get_user_emails();
$delegates = array();
$attendees = array();
// keep attendee status of the current user
foreach ((array) $new['attendees'] as $i => $attendee) {
if (empty($attendee['email'])) {
continue;
}
$attendees[] = $email = strtolower($attendee['email']);
if (in_array($email, $emails)) {
foreach ($old['attendees'] as $_attendee) {
if ($attendee['email'] == $_attendee['email']) {
$new['attendees'][$i] = $_attendee;
if ($_attendee['status'] == 'DELEGATED' && ($email = $_attendee['delegated-to'])) {
$delegates[] = strtolower($email);
}
break;
}
}
}
}
// make sure delegated attendee is not lost
foreach ($delegates as $delegatee) {
if (!in_array($delegatee, $attendees)) {
foreach ((array) $old['attendees'] as $attendee) {
if ($attendee['email'] && ($email = strtolower($attendee['email'])) && $email == $delegatee) {
$new['attendees'][] = $attendee;
break;
}
}
}
}
}
// We also make sure that status of any attendee
// is not overriden by NEEDS-ACTION if it was already set
// which could happen if you work with shared events
foreach ((array) $new['attendees'] as $i => $attendee) {
if ($attendee['email'] && ($attendee['status'] ?? '') == 'NEEDS-ACTION') {
foreach ($old['attendees'] as $_attendee) {
if ($attendee['email'] == $_attendee['email']) {
$new['attendees'][$i]['status'] = $_attendee['status'];
unset($new['attendees'][$i]['rsvp']);
break;
}
}
}
}
}
/********* Static utility functions *********/
/**
* Convert the internal structured data into a vcalendar rrule 2.0 string
*/
public static function to_rrule($recurrence, $allday = false)
{
if (is_string($recurrence)) {
return $recurrence;
}
$rrule = '';
foreach ((array)$recurrence as $k => $val) {
$k = strtoupper($k);
switch ($k) {
case 'UNTIL':
// convert to UTC according to RFC 5545
if (is_a($val, 'DateTime')) {
if (!$allday && empty($val->_dateonly)) {
$until = clone $val;
$until->setTimezone(new DateTimeZone('UTC'));
$val = $until->format('Ymd\THis\Z');
}
else {
$val = $val->format('Ymd');
}
}
break;
case 'RDATE':
case 'EXDATE':
foreach ((array)$val as $i => $ex) {
if (is_a($ex, 'DateTime')) {
$val[$i] = $ex->format('Ymd\THis');
}
}
$val = join(',', (array)$val);
break;
case 'EXCEPTIONS':
continue 2;
}
if (strlen($val)) {
$rrule .= $k . '=' . $val . ';';
}
}
return rtrim($rrule, ';');
}
/**
* Convert from fullcalendar date format to PHP date() format string
*/
public static function to_php_date_format($from)
{
if (!is_string($from)) {
return '';
}
// "dd.MM.yyyy HH:mm:ss" => "d.m.Y H:i:s"
return strtr(strtr($from, array(
'YYYY' => 'Y',
'YY' => 'y',
'yyyy' => 'Y',
'yy' => 'y',
'MMMM' => 'F',
'MMM' => 'M',
'MM' => 'm',
'M' => 'n',
'dddd' => 'l',
'ddd' => 'D',
'DD' => 'd',
'D' => 'j',
'HH' => '**',
'hh' => '%%',
'H' => 'G',
'h' => 'g',
'mm' => 'i',
'ss' => 's',
'TT' => 'A',
'tt' => 'a',
'T' => 'A',
't' => 'a',
'u' => 'c',
)), array(
'**' => 'H',
'%%' => 'h',
));
}
/**
* Convert from PHP date() format to fullcalendar (MomentJS) format string
*/
public static function from_php_date_format($from)
{
if (!is_string($from)) {
return '';
}
// "d.m.Y H:i:s" => "dd.MM.yyyy HH:mm:ss"
return strtr($from, array(
'y' => 'YY',
'Y' => 'YYYY',
'M' => 'MMM',
'F' => 'MMMM',
'm' => 'MM',
'n' => 'M',
'j' => 'D',
'd' => 'DD',
'D' => 'ddd',
'l' => 'dddd',
'H' => 'HH',
'h' => 'hh',
'G' => 'H',
'g' => 'h',
'i' => 'mm',
's' => 'ss',
'c' => '',
));
}
}

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