From b3550db02dd24eb435789991a95db7ddb053fd5b Mon Sep 17 00:00:00 2001
From: Thomas Müller <thomas.mueller@tmit.eu>
Date: Fri, 18 Dec 2015 11:56:25 +0100
Subject: Adding IMip scheduling which uses ownClouds mail delivery

---
 apps/dav/lib/caldav/schedule/imipplugin.php | 110 ++++++++++++++++++++++++++++
 1 file changed, 110 insertions(+)
 create mode 100644 apps/dav/lib/caldav/schedule/imipplugin.php

(limited to 'apps/dav/lib/caldav')

diff --git a/apps/dav/lib/caldav/schedule/imipplugin.php b/apps/dav/lib/caldav/schedule/imipplugin.php
new file mode 100644
index 00000000000..eafdbe9c1bd
--- /dev/null
+++ b/apps/dav/lib/caldav/schedule/imipplugin.php
@@ -0,0 +1,110 @@
+<?php
+
+namespace OCA\DAV\CalDAV\Schedule;
+
+use OCP\ILogger;
+use OCP\Mail\IMailer;
+use Sabre\DAV;
+use Sabre\VObject\ITip;
+use Sabre\CalDAV\Schedule\IMipPlugin as SabreIMipPlugin;
+/**
+ * iMIP handler.
+ *
+ * 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.
+ *
+ * If you want to customize the email that gets sent out, you can do so by
+ * extending this class and overriding the sendMessage method.
+ *
+ * @copyright Copyright (C) 2007-2015 fruux GmbH (https://fruux.com/).
+ * @author Evert Pot (http://evertpot.com/)
+ * @license http://sabre.io/license/ Modified BSD License
+ */
+class IMipPlugin extends SabreIMipPlugin {
+
+	/** @var IMailer */
+	private $mailer;
+
+	/** @var ILogger */
+	private $logger;
+
+	/**
+	 * Creates the email handler.
+	 *
+	 * @param IMailer $mailer
+	 */
+	function __construct(IMailer $mailer, ILogger $logger) {
+		parent::__construct('');
+		$this->mailer = $mailer;
+		$this->logger = $logger;
+	}
+
+	/**
+	 * Event handler for the 'schedule' event.
+	 *
+	 * @param ITip\Message $iTipMessage
+	 * @return void
+	 */
+	function schedule(ITip\Message $iTipMessage) {
+
+		// Not sending any emails if the system considers the update
+		// insignificant.
+		if (!$iTipMessage->significantChange) {
+			if (!$iTipMessage->scheduleStatus) {
+				$iTipMessage->scheduleStatus = '1.0;We got the message, but it\'s not significant enough to warrant an email';
+			}
+			return;
+		}
+
+		$summary = $iTipMessage->message->VEVENT->SUMMARY;
+
+		if (parse_url($iTipMessage->sender, PHP_URL_SCHEME) !== 'mailto') {
+			return;
+		}
+
+		if (parse_url($iTipMessage->recipient, PHP_URL_SCHEME) !== 'mailto') {
+			return;
+		}
+
+		$sender = substr($iTipMessage->sender, 7);
+		$recipient = substr($iTipMessage->recipient, 7);
+
+		$senderName = ($iTipMessage->senderName) ? $iTipMessage->senderName : null;
+		$recipientName = ($iTipMessage->recipientName) ? $iTipMessage->recipientName : null;
+
+		$subject = 'SabreDAV iTIP message';
+		switch (strtoupper($iTipMessage->method)) {
+			case 'REPLY' :
+				$subject = 'Re: ' . $summary;
+				break;
+			case 'REQUEST' :
+				$subject = $summary;
+				break;
+			case 'CANCEL' :
+				$subject = 'Cancelled: ' . $summary;
+				break;
+		}
+
+		$contentType = 'text/calendar; charset=UTF-8; method=' . $iTipMessage->method;
+
+		$message = $this->mailer->createMessage();
+
+		$message->setReplyTo([$sender => $senderName])
+			->setTo([$recipient => $recipientName])
+			->setSubject($subject)
+			->setBody($iTipMessage->message->serialize(), $contentType);
+		try {
+			$failed = $this->mailer->send($message);
+			if ($failed) {
+				$this->logger->error('Unable to deliver message to {failed}', ['app' => 'dav', 'failed' =>  implode(', ', $failed)]);
+				$iTipMessage->scheduleStatus = '5.0; EMail delivery failed';
+			}
+			$iTipMessage->scheduleStatus = '1.1; Scheduling message is sent via iMip';
+		} catch(\Exception $ex) {
+			$this->logger->logException($ex, ['app' => 'dav']);
+			$iTipMessage->scheduleStatus = '5.0; EMail delivery failed';
+		}
+	}
+
+}
-- 
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