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IMipPlugin.php
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IMipPlugin.php
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<?php
/**
* Extended CalDAV IMip plugin for the Kolab DAV server
*
* @author Thomas Bruederli <bruederli@kolabsys.com>
*
* Copyright (C) 2014, Kolab Systems AG <contact@kolabsys.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
namespace Kolab\CalDAV;
use \rcube;
use \rcube_utils;
use \Mail_mime;
use Sabre\VObject;
use Sabre\CalDAV;
use Sabre\DAV;
/**
* iMIP plugin.
*
* This class is responsible for sending out iMIP messages. iMIP is the
* email-based transport for iTIP. iTIP deals with scheduling operations for
* iCalendar objects.
*/
class IMipPlugin extends CalDAV\Schedule\IMipPlugin
{
/**
* Event handler for the 'schedule' event.
*
* @param ITip\Message $iTipMessage
* @return void
*/
function schedule(VObject\ITip\Message $iTipMessage)
{
console(__METHOD__, $iTipMessage->method, $iTipMessage->recipient, $iTipMessage->significantChange, $iTipMessage->scheduleStatus);
// Not sending any emails if the system considers the update insignificant.
if (!$iTipMessage->significantChange) {
if (!$iTipMessage->scheduleStatus) {
$iTipMessage->scheduleStatus = '1.0;We got the message, but it\'s not significant enough to warrant an email';
}
return;
}
$recipient = preg_replace('!^mailto:!i', '', $iTipMessage->recipient);
$summary = strval($iTipMessage->message->VEVENT->SUMMARY);
$rcube = rcube::get_instance();
$sender = $rcube->user->get_identity();
$sender_email = $sender['email'] ?: $rcube->get_user_email();
$sender_name = $sender['name'] ?: $rcube->get_user_name();
$subject = 'KolabDAV iTIP message';
switch (strtoupper($iTipMessage->method)) {
case 'REPLY' :
$subject = 'Re: ' . $summary;
break;
case 'REQUEST' :
$subject = 'Invitation: ' .$summary;
break;
case 'CANCEL' :
$subject = 'Cancelled: ' . $summary;
break;
}
$sender = rcube_utils::idn_to_ascii($sender_email);
$from = format_email_recipient($sender, $sender_name);
$mailto = rcube_utils::idn_to_ascii($recipient);
$to = format_email_recipient($mailto, $iTipMessage->recipientName);
// copy some missing properties from master event to make it validate in our clients
if (Plugin::$parsed_vevent && strval(Plugin::$parsed_vevent->UID) == strval($iTipMessage->uid)) {
if (isset(Plugin::$parsed_vevent->DTEND)) {
$iTipMessage->message->VEVENT->DTEND = clone Plugin::$parsed_vevent->DTEND;
}
if (isset(Plugin::$parsed_vevent->STATUS)) {
$iTipMessage->message->VEVENT->STATUS = strval(Plugin::$parsed_vevent->STATUS);
}
}
// compose multipart message using PEAR:Mail_Mime
$message = new Mail_mime("\r\n");
$message->setParam('text_encoding', 'quoted-printable');
$message->setParam('head_encoding', 'quoted-printable');
$message->setParam('head_charset', RCUBE_CHARSET);
$message->setParam('text_charset', RCUBE_CHARSET . ";\r\n format=flowed");
// compose common headers array
$headers = array(
'To' => $to,
'From' => $from,
'Date' => date('r'),
'Reply-To' => $originator,
'Message-ID' => $rcube->gen_message_id(),
'X-Sender' => $sender,
'Subject' => $subject,
);
if ($agent = $rcube->config->get('useragent'))
$headers['User-Agent'] = $agent;
$message->headers($headers);
$message->setContentType('text/calendar', array('method' => strval($iTipMessage->method), 'charset' => RCUBE_CHARSET));
$message->setTXTBody($iTipMessage->message->serialize());
// send message through Roundcube's SMTP feature
if ($rcube->deliver_message($message, $sender, $mailto, $smtp_error)) {
$iTipMessage->scheduleStatus = '1.1;Scheduling message sent via iMip';
}
else {
rcube::raise_error(array(
'code' => 600, 'type' => 'php',
'file' => __FILE__, 'line' => __LINE__,
'message' => "Failed to send iTIP message to " . $mailto),
true, false);
}
}
}

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