Merge pull request #5304 from nextcloud/bugfix/2855/dont_send_invitations_for_past_events

don't send invitation emails for past events

4 files changed, 134 insertions, 5 deletions

diff --git a/apps/dav/appinfo/v1/caldav.php b/apps/dav/appinfo/v1/caldav.php
index 301ea4b5486..bd9de775f44 100644
--- a/apps/dav/appinfo/v1/caldav.php
+++ b/apps/dav/appinfo/v1/caldav.php
@@ -84,7 +84,7 @@ if ($debugging) {
 $server->addPlugin(new \Sabre\DAV\Sync\Plugin());
 $server->addPlugin(new \Sabre\CalDAV\ICSExportPlugin());
 $server->addPlugin(new \OCA\DAV\CalDAV\Schedule\Plugin());
-$server->addPlugin(new \OCA\DAV\CalDAV\Schedule\IMipPlugin( \OC::$server->getMailer(), \OC::$server->getLogger()));
+$server->addPlugin(new \OCA\DAV\CalDAV\Schedule\IMipPlugin( \OC::$server->getMailer(), \OC::$server->getLogger(), new \OC\AppFramework\Utility\TimeFactory()));
 $server->addPlugin(new ExceptionLoggerPlugin('caldav', \OC::$server->getLogger()));
 
 // And off we go!
diff --git a/apps/dav/lib/CalDAV/Schedule/IMipPlugin.php b/apps/dav/lib/CalDAV/Schedule/IMipPlugin.php
index c21edb45848..8e1d7e2563d 100644
--- a/apps/dav/lib/CalDAV/Schedule/IMipPlugin.php
+++ b/apps/dav/lib/CalDAV/Schedule/IMipPlugin.php
@@ -1,8 +1,10 @@
 <?php
 /**
  * @copyright Copyright (c) 2016, ownCloud, Inc.
+ * @copyright Copyright (c) 2017, Georg Ehrke
  *
  * @author Thomas Müller <thomas.mueller@tmit.eu>
+ * @author Georg Ehrke <oc.list@georgehrke.com>
  *
  * @license AGPL-3.0
  *
@@ -21,10 +23,15 @@
  */
 namespace OCA\DAV\CalDAV\Schedule;
 
+use OCP\AppFramework\Utility\ITimeFactory;
 use OCP\ILogger;
 use OCP\Mail\IMailer;
+use Sabre\VObject\Component\VCalendar;
+use Sabre\VObject\DateTimeParser;
 use Sabre\VObject\ITip;
 use Sabre\CalDAV\Schedule\IMipPlugin as SabreIMipPlugin;
+use Sabre\VObject\Recur\EventIterator;
+
 /**
  * iMIP handler.
  *
@@ -47,15 +54,23 @@ class IMipPlugin extends SabreIMipPlugin {
 	/** @var ILogger */
 	private $logger;
 
+	/** @var ITimeFactory */
+	private $timeFactory;
+
+	const MAX_DATE = '2038-01-01';
+
 	/**
 	 * Creates the email handler.
 	 *
 	 * @param IMailer $mailer
+	 * @param ILogger $logger
+	 * @param ITimeFactory $timeFactory
 	 */
-	function __construct(IMailer $mailer, ILogger $logger) {
+	function __construct(IMailer $mailer, ILogger $logger, ITimeFactory $timeFactory) {
 		parent::__construct('');
 		$this->mailer = $mailer;
 		$this->logger = $logger;
+		$this->timeFactory = $timeFactory;
 	}
 
 	/**
@@ -85,6 +100,11 @@ class IMipPlugin extends SabreIMipPlugin {
 			return;
 		}
 
+		// don't send out mails for events that already took place
+		if ($this->isEventInThePast($iTipMessage->message)) {
+			return;
+		}
+
 		$sender = substr($iTipMessage->sender, 7);
 		$recipient = substr($iTipMessage->recipient, 7);
 
@@ -125,4 +145,49 @@ class IMipPlugin extends SabreIMipPlugin {
 		}
 	}
 
+	/**
+	 * check if event took place in the past already
+	 * @param VCalendar $vObject
+	 * @return bool
+	 */
+	private function isEventInThePast(VCalendar $vObject) {
+		$component = $vObject->VEVENT;
+
+		$firstOccurrence = $component->DTSTART->getDateTime()->getTimeStamp();
+		// Finding the last occurrence is a bit harder
+		if (!isset($component->RRULE)) {
+			if (isset($component->DTEND)) {
+				$lastOccurrence = $component->DTEND->getDateTime()->getTimeStamp();
+			} elseif (isset($component->DURATION)) {
+				$endDate = clone $component->DTSTART->getDateTime();
+				// $component->DTEND->getDateTime() returns DateTimeImmutable
+				$endDate = $endDate->add(DateTimeParser::parse($component->DURATION->getValue()));
+				$lastOccurrence = $endDate->getTimeStamp();
+			} elseif (!$component->DTSTART->hasTime()) {
+				$endDate = clone $component->DTSTART->getDateTime();
+				// $component->DTSTART->getDateTime() returns DateTimeImmutable
+				$endDate = $endDate->modify('+1 day');
+				$lastOccurrence = $endDate->getTimeStamp();
+			} else {
+				$lastOccurrence = $firstOccurrence;
+			}
+		} else {
+			$it = new EventIterator($vObject, (string)$component->UID);
+			$maxDate = new \DateTime(self::MAX_DATE);
+			if ($it->isInfinite()) {
+				$lastOccurrence = $maxDate->getTimestamp();
+			} else {
+				$end = $it->getDtEnd();
+				while($it->valid() && $end < $maxDate) {
+					$end = $it->getDtEnd();
+					$it->next();
+
+				}
+				$lastOccurrence = $end->getTimestamp();
+			}
+		}
+
+		$currentTime = $this->timeFactory->getTime();
+		return $lastOccurrence < $currentTime;
+	}
 }
diff --git a/apps/dav/lib/Server.php b/apps/dav/lib/Server.php
index b93f3e6390a..ac0abc8b4eb 100644
--- a/apps/dav/lib/Server.php
+++ b/apps/dav/lib/Server.php
@@ -28,6 +28,7 @@
  */
 namespace OCA\DAV;
 
+use OC\AppFramework\Utility\TimeFactory;
 use OCA\DAV\CalDAV\Schedule\IMipPlugin;
 use OCA\DAV\CardDAV\ImageExportPlugin;
 use OCA\DAV\CardDAV\PhotoCache;
@@ -74,6 +75,7 @@ class Server {
 		$logger = \OC::$server->getLogger();
 		$mailer = \OC::$server->getMailer();
 		$dispatcher = \OC::$server->getEventDispatcher();
+		$timezone = new TimeFactory();
 
 		$root = new RootCollection();
 		$this->server = new \OCA\DAV\Connector\Sabre\Server(new CachingTree($root));
@@ -135,7 +137,7 @@ class Server {
 		$this->server->addPlugin(new \OCA\DAV\CalDAV\Plugin());
 		$this->server->addPlugin(new \Sabre\CalDAV\ICSExportPlugin());
 		$this->server->addPlugin(new \OCA\DAV\CalDAV\Schedule\Plugin());
-		$this->server->addPlugin(new IMipPlugin($mailer, $logger));
+		$this->server->addPlugin(new IMipPlugin($mailer, $logger, $timezone));
 		$this->server->addPlugin(new \Sabre\CalDAV\Subscriptions\Plugin());
 		$this->server->addPlugin(new \Sabre\CalDAV\Notifications\Plugin());
 		$this->server->addPlugin(new DAV\Sharing\Plugin($authBackend, \OC::$server->getRequest()));
diff --git a/apps/dav/tests/unit/CalDAV/Schedule/IMipPluginTest.php b/apps/dav/tests/unit/CalDAV/Schedule/IMipPluginTest.php
index 2b9d10c9e81..56eb00406da 100644
--- a/apps/dav/tests/unit/CalDAV/Schedule/IMipPluginTest.php
+++ b/apps/dav/tests/unit/CalDAV/Schedule/IMipPluginTest.php
@@ -1,9 +1,11 @@
 <?php
 /**
  * @copyright Copyright (c) 2016, ownCloud, Inc.
+ * @copyright Copyright (c) 2017, Georg Ehrke
  *
  * @author Joas Schilling <coding@schilljs.com>
  * @author Thomas Müller <thomas.mueller@tmit.eu>
+ * @author Georg Ehrke <oc.list@georgehrke.com>
  *
  * @license AGPL-3.0
  *
@@ -25,6 +27,7 @@ namespace OCA\DAV\Tests\unit\CalDAV\Schedule;
 
 use OC\Mail\Mailer;
 use OCA\DAV\CalDAV\Schedule\IMipPlugin;
+use OCP\AppFramework\Utility\ITimeFactory;
 use OCP\ILogger;
 use Sabre\VObject\Component\VCalendar;
 use Sabre\VObject\ITip\Message;
@@ -40,8 +43,10 @@ class IMipPluginTest extends TestCase {
 		$mailer->expects($this->once())->method('send');
 		/** @var ILogger | \PHPUnit_Framework_MockObject_MockObject $logger */
 		$logger = $this->getMockBuilder('OC\Log')->disableOriginalConstructor()->getMock();
+		$timeFactory = $this->getMockBuilder(ITimeFactory::class)->disableOriginalConstructor()->getMock();
+		$timeFactory->method('getTime')->willReturn(1);
 
-		$plugin = new IMipPlugin($mailer, $logger);
+		$plugin = new IMipPlugin($mailer, $logger, $timeFactory);
 		$message = new Message();
 		$message->method = 'REQUEST';
 		$message->message = new VCalendar();
@@ -49,6 +54,7 @@ class IMipPluginTest extends TestCase {
 			'UID' => $message->uid,
 			'SEQUENCE' => $message->sequence,
 			'SUMMARY' => 'Fellowship meeting',
+			'DTSTART' => new \DateTime('2017-01-01 00:00:00') // 1483228800
 		]);
 		$message->sender = 'mailto:gandalf@wiz.ard';
 		$message->recipient = 'mailto:frodo@hobb.it';
@@ -69,8 +75,10 @@ class IMipPluginTest extends TestCase {
 		$mailer->method('send')->willThrowException(new \Exception());
 		/** @var ILogger | \PHPUnit_Framework_MockObject_MockObject $logger */
 		$logger = $this->getMockBuilder('OC\Log')->disableOriginalConstructor()->getMock();
+		$timeFactory = $this->getMockBuilder(ITimeFactory::class)->disableOriginalConstructor()->getMock();
+		$timeFactory->method('getTime')->willReturn(1);
 
-		$plugin = new IMipPlugin($mailer, $logger);
+		$plugin = new IMipPlugin($mailer, $logger, $timeFactory);
 		$message = new Message();
 		$message->method = 'REQUEST';
 		$message->message = new VCalendar();
@@ -78,6 +86,7 @@ class IMipPluginTest extends TestCase {
 			'UID' => $message->uid,
 			'SEQUENCE' => $message->sequence,
 			'SUMMARY' => 'Fellowship meeting',
+			'DTSTART' => new \DateTime('2017-01-01 00:00:00') // 1483228800
 		]);
 		$message->sender = 'mailto:gandalf@wiz.ard';
 		$message->recipient = 'mailto:frodo@hobb.it';
@@ -90,4 +99,57 @@ class IMipPluginTest extends TestCase {
 		$this->assertEquals('text/calendar; charset=UTF-8; method=REQUEST', $mailMessage->getSwiftMessage()->getContentType());
 	}
 
+	/**
+	 * @dataProvider dataNoMessageSendForPastEvents
+	 */
+	public function testNoMessageSendForPastEvents($veventParams, $expectsMail) {
+		$mailMessage = new \OC\Mail\Message(new \Swift_Message());
+		/** @var Mailer | \PHPUnit_Framework_MockObject_MockObject $mailer */
+		$mailer = $this->getMockBuilder('OC\Mail\Mailer')->disableOriginalConstructor()->getMock();
+		$mailer->method('createMessage')->willReturn($mailMessage);
+		if ($expectsMail) {
+			$mailer->expects($this->once())->method('send');
+		} else {
+			$mailer->expects($this->never())->method('send');
+		}
+		/** @var ILogger | \PHPUnit_Framework_MockObject_MockObject $logger */
+		$logger = $this->getMockBuilder('OC\Log')->disableOriginalConstructor()->getMock();
+		$timeFactory = $this->getMockBuilder(ITimeFactory::class)->disableOriginalConstructor()->getMock();
+		$timeFactory->method('getTime')->willReturn(1496912528);
+
+		$plugin = new IMipPlugin($mailer, $logger, $timeFactory);
+		$message = new Message();
+		$message->method = 'REQUEST';
+		$message->message = new VCalendar();
+		$message->message->add('VEVENT', array_merge([
+			'UID' => 'uid1337',
+			'SEQUENCE' => 42,
+			'SUMMARY' => 'Fellowship meeting',
+		], $veventParams));
+		$message->sender = 'mailto:gandalf@wiz.ard';
+		$message->recipient = 'mailto:frodo@hobb.it';
+
+		$plugin->schedule($message);
+
+		if ($expectsMail) {
+			$this->assertEquals('1.1', $message->getScheduleStatus());
+ 		} else {
+			$this->assertEquals(false, $message->getScheduleStatus());
+		}
+	}
+
+	public function dataNoMessageSendForPastEvents() {
+		return [
+			[['DTSTART' => new \DateTime('2017-01-01 00:00:00')], false],
+			[['DTSTART' => new \DateTime('2017-01-01 00:00:00'), 'DTEND' => new \DateTime('2017-01-01 00:00:00')], false],
+			[['DTSTART' => new \DateTime('2017-01-01 00:00:00'), 'DTEND' => new \DateTime('2017-12-31 00:00:00')], true],
+			[['DTSTART' => new \DateTime('2017-01-01 00:00:00'), 'DURATION' => 'P1D'], false],
+			[['DTSTART' => new \DateTime('2017-01-01 00:00:00'), 'DURATION' => 'P52W'], true],
+			[['DTSTART' => new \DateTime('2017-01-01 00:00:00'), 'DTEND' => new \DateTime('2017-01-01 00:00:00'), 'RRULE' => 'FREQ=WEEKLY'], true],
+			[['DTSTART' => new \DateTime('2017-01-01 00:00:00'), 'DTEND' => new \DateTime('2017-01-01 00:00:00'), 'RRULE' => 'FREQ=WEEKLY;COUNT=3'], false],
+			[['DTSTART' => new \DateTime('2017-01-01 00:00:00'), 'DTEND' => new \DateTime('2017-01-01 00:00:00'), 'RRULE' => 'FREQ=WEEKLY;UNTIL=20170301T000000Z'], false],
+			[['DTSTART' => new \DateTime('2017-01-01 00:00:00'), 'DTEND' => new \DateTime('2017-01-01 00:00:00'), 'RRULE' => 'FREQ=WEEKLY;COUNT=33'], true],
+			[['DTSTART' => new \DateTime('2017-01-01 00:00:00'), 'DTEND' => new \DateTime('2017-01-01 00:00:00'), 'RRULE' => 'FREQ=WEEKLY;UNTIL=20171001T000000Z'], true],
+		];
+	}
 }