nextcloud / server

apps/dav/lib/CalDAV/CalDavBackend.php

Indentation +2560 added lines, -2560 removed lines

@@ -76,2564 +76,2564 @@
  */
 class CalDavBackend extends AbstractBackend implements SyncSupport, SubscriptionSupport, SchedulingSupport {
 
-	const CALENDAR_TYPE_CALENDAR = 0;
-	const CALENDAR_TYPE_SUBSCRIPTION = 1;
-
-	const PERSONAL_CALENDAR_URI = 'personal';
-	const PERSONAL_CALENDAR_NAME = 'Personal';
-
-	const RESOURCE_BOOKING_CALENDAR_URI = 'calendar';
-	const RESOURCE_BOOKING_CALENDAR_NAME = 'Calendar';
-
-	/**
-	 * We need to specify a max date, because we need to stop *somewhere*
-	 *
-	 * On 32 bit system the maximum for a signed integer is 2147483647, so
-	 * MAX_DATE cannot be higher than date('Y-m-d', 2147483647) which results
-	 * in 2038-01-19 to avoid problems when the date is converted
-	 * to a unix timestamp.
-	 */
-	const MAX_DATE = '2038-01-01';
-
-	const ACCESS_PUBLIC = 4;
-	const CLASSIFICATION_PUBLIC = 0;
-	const CLASSIFICATION_PRIVATE = 1;
-	const CLASSIFICATION_CONFIDENTIAL = 2;
-
-	/**
-	 * List of CalDAV properties, and how they map to database field names
-	 * Add your own properties by simply adding on to this array.
-	 *
-	 * Note that only string-based properties are supported here.
-	 *
-	 * @var array
-	 */
-	public $propertyMap = [
-		'{DAV:}displayname'                          => 'displayname',
-		'{urn:ietf:params:xml:ns:caldav}calendar-description' => 'description',
-		'{urn:ietf:params:xml:ns:caldav}calendar-timezone'    => 'timezone',
-		'{http://apple.com/ns/ical/}calendar-order'  => 'calendarorder',
-		'{http://apple.com/ns/ical/}calendar-color'  => 'calendarcolor',
-	];
-
-	/**
-	 * List of subscription properties, and how they map to database field names.
-	 *
-	 * @var array
-	 */
-	public $subscriptionPropertyMap = [
-		'{DAV:}displayname'                                           => 'displayname',
-		'{http://apple.com/ns/ical/}refreshrate'                      => 'refreshrate',
-		'{http://apple.com/ns/ical/}calendar-order'                   => 'calendarorder',
-		'{http://apple.com/ns/ical/}calendar-color'                   => 'calendarcolor',
-		'{http://calendarserver.org/ns/}subscribed-strip-todos'       => 'striptodos',
-		'{http://calendarserver.org/ns/}subscribed-strip-alarms'      => 'stripalarms',
-		'{http://calendarserver.org/ns/}subscribed-strip-attachments' => 'stripattachments',
-	];
-
-	/** @var array properties to index */
-	public static $indexProperties = ['CATEGORIES', 'COMMENT', 'DESCRIPTION',
-		'LOCATION', 'RESOURCES', 'STATUS', 'SUMMARY', 'ATTENDEE', 'CONTACT',
-		'ORGANIZER'];
-
-	/** @var array parameters to index */
-	public static $indexParameters = [
-		'ATTENDEE' => ['CN'],
-		'ORGANIZER' => ['CN'],
-	];
-
-	/**
-	 * @var string[] Map of uid => display name
-	 */
-	protected $userDisplayNames;
-
-	/** @var IDBConnection */
-	private $db;
-
-	/** @var Backend */
-	private $calendarSharingBackend;
-
-	/** @var Principal */
-	private $principalBackend;
-
-	/** @var IUserManager */
-	private $userManager;
-
-	/** @var ISecureRandom */
-	private $random;
-
-	/** @var ILogger */
-	private $logger;
-
-	/** @var EventDispatcherInterface */
-	private $dispatcher;
-
-	/** @var bool */
-	private $legacyEndpoint;
-
-	/** @var string */
-	private $dbObjectPropertiesTable = 'calendarobjects_props';
-
-	/**
-	 * CalDavBackend constructor.
-	 *
-	 * @param IDBConnection $db
-	 * @param Principal $principalBackend
-	 * @param IUserManager $userManager
-	 * @param IGroupManager $groupManager
-	 * @param ISecureRandom $random
-	 * @param ILogger $logger
-	 * @param EventDispatcherInterface $dispatcher
-	 * @param bool $legacyEndpoint
-	 */
-	public function __construct(IDBConnection $db,
-								Principal $principalBackend,
-								IUserManager $userManager,
-								IGroupManager $groupManager,
-								ISecureRandom $random,
-								ILogger $logger,
-								EventDispatcherInterface $dispatcher,
-								bool $legacyEndpoint = false) {
-		$this->db = $db;
-		$this->principalBackend = $principalBackend;
-		$this->userManager = $userManager;
-		$this->calendarSharingBackend = new Backend($this->db, $this->userManager, $groupManager, $principalBackend, 'calendar');
-		$this->random = $random;
-		$this->logger = $logger;
-		$this->dispatcher = $dispatcher;
-		$this->legacyEndpoint = $legacyEndpoint;
-	}
-
-	/**
-	 * Return the number of calendars for a principal
-	 *
-	 * By default this excludes the automatically generated birthday calendar
-	 *
-	 * @param $principalUri
-	 * @param bool $excludeBirthday
-	 * @return int
-	 */
-	public function getCalendarsForUserCount($principalUri, $excludeBirthday = true) {
-		$principalUri = $this->convertPrincipal($principalUri, true);
-		$query = $this->db->getQueryBuilder();
-		$query->select($query->func()->count('*'))
-			->from('calendars')
-			->where($query->expr()->eq('principaluri', $query->createNamedParameter($principalUri)));
-
-		if ($excludeBirthday) {
-			$query->andWhere($query->expr()->neq('uri', $query->createNamedParameter(BirthdayService::BIRTHDAY_CALENDAR_URI)));
-		}
-
-		return (int)$query->execute()->fetchColumn();
-	}
-
-	/**
-	 * Returns a list of calendars for a principal.
-	 *
-	 * Every project is an array with the following keys:
-	 *  * id, a unique id that will be used by other functions to modify the
-	 *    calendar. This can be the same as the uri or a database key.
-	 *  * uri, which the basename of the uri with which the calendar is
-	 *    accessed.
-	 *  * principaluri. The owner of the calendar. Almost always the same as
-	 *    principalUri passed to this method.
-	 *
-	 * Furthermore it can contain webdav properties in clark notation. A very
-	 * common one is '{DAV:}displayname'.
-	 *
-	 * Many clients also require:
-	 * {urn:ietf:params:xml:ns:caldav}supported-calendar-component-set
-	 * For this property, you can just return an instance of
-	 * Sabre\CalDAV\Property\SupportedCalendarComponentSet.
-	 *
-	 * If you return {http://sabredav.org/ns}read-only and set the value to 1,
-	 * ACL will automatically be put in read-only mode.
-	 *
-	 * @param string $principalUri
-	 * @return array
-	 */
-	function getCalendarsForUser($principalUri) {
-		$principalUriOriginal = $principalUri;
-		$principalUri = $this->convertPrincipal($principalUri, true);
-		$fields = array_values($this->propertyMap);
-		$fields[] = 'id';
-		$fields[] = 'uri';
-		$fields[] = 'synctoken';
-		$fields[] = 'components';
-		$fields[] = 'principaluri';
-		$fields[] = 'transparent';
-
-		// Making fields a comma-delimited list
-		$query = $this->db->getQueryBuilder();
-		$query->select($fields)->from('calendars')
-				->where($query->expr()->eq('principaluri', $query->createNamedParameter($principalUri)))
-				->orderBy('calendarorder', 'ASC');
-		$stmt = $query->execute();
-
-		$calendars = [];
-		while($row = $stmt->fetch(\PDO::FETCH_ASSOC)) {
-
-			$components = [];
-			if ($row['components']) {
-				$components = explode(',',$row['components']);
-			}
-
-			$calendar = [
-				'id' => $row['id'],
-				'uri' => $row['uri'],
-				'principaluri' => $this->convertPrincipal($row['principaluri'], !$this->legacyEndpoint),
-				'{' . Plugin::NS_CALENDARSERVER . '}getctag' => 'http://sabre.io/ns/sync/' . ($row['synctoken']?$row['synctoken']:'0'),
-				'{http://sabredav.org/ns}sync-token' => $row['synctoken']?$row['synctoken']:'0',
-				'{' . Plugin::NS_CALDAV . '}supported-calendar-component-set' => new SupportedCalendarComponentSet($components),
-				'{' . Plugin::NS_CALDAV . '}schedule-calendar-transp' => new ScheduleCalendarTransp($row['transparent']?'transparent':'opaque'),
-				'{' . \OCA\DAV\DAV\Sharing\Plugin::NS_OWNCLOUD . '}owner-principal' => $this->convertPrincipal($principalUri, !$this->legacyEndpoint),
-			];
-
-			foreach($this->propertyMap as $xmlName=>$dbName) {
-				$calendar[$xmlName] = $row[$dbName];
-			}
-
-			$this->addOwnerPrincipal($calendar);
-
-			if (!isset($calendars[$calendar['id']])) {
-				$calendars[$calendar['id']] = $calendar;
-			}
-		}
-
-		$stmt->closeCursor();
-
-		// query for shared calendars
-		$principals = $this->principalBackend->getGroupMembership($principalUriOriginal, true);
-		$principals = array_merge($principals, $this->principalBackend->getCircleMembership($principalUriOriginal));
-
-		$principals = array_map(function($principal) {
-			return urldecode($principal);
-		}, $principals);
-		$principals[]= $principalUri;
-
-		$fields = array_values($this->propertyMap);
-		$fields[] = 'a.id';
-		$fields[] = 'a.uri';
-		$fields[] = 'a.synctoken';
-		$fields[] = 'a.components';
-		$fields[] = 'a.principaluri';
-		$fields[] = 'a.transparent';
-		$fields[] = 's.access';
-		$query = $this->db->getQueryBuilder();
-		$result = $query->select($fields)
-			->from('dav_shares', 's')
-			->join('s', 'calendars', 'a', $query->expr()->eq('s.resourceid', 'a.id'))
-			->where($query->expr()->in('s.principaluri', $query->createParameter('principaluri')))
-			->andWhere($query->expr()->eq('s.type', $query->createParameter('type')))
-			->setParameter('type', 'calendar')
-			->setParameter('principaluri', $principals, \Doctrine\DBAL\Connection::PARAM_STR_ARRAY)
-			->execute();
-
-		$readOnlyPropertyName = '{' . \OCA\DAV\DAV\Sharing\Plugin::NS_OWNCLOUD . '}read-only';
-		while($row = $result->fetch()) {
-			if ($row['principaluri'] === $principalUri) {
-				continue;
-			}
-
-			$readOnly = (int) $row['access'] === Backend::ACCESS_READ;
-			if (isset($calendars[$row['id']])) {
-				if ($readOnly) {
-					// New share can not have more permissions then the old one.
-					continue;
-				}
-				if (isset($calendars[$row['id']][$readOnlyPropertyName]) &&
-					$calendars[$row['id']][$readOnlyPropertyName] === 0) {
-					// Old share is already read-write, no more permissions can be gained
-					continue;
-				}
-			}
-
-			list(, $name) = Uri\split($row['principaluri']);
-			$uri = $row['uri'] . '_shared_by_' . $name;
-			$row['displayname'] = $row['displayname'] . ' (' . $this->getUserDisplayName($name) . ')';
-			$components = [];
-			if ($row['components']) {
-				$components = explode(',',$row['components']);
-			}
-			$calendar = [
-				'id' => $row['id'],
-				'uri' => $uri,
-				'principaluri' => $this->convertPrincipal($principalUri, !$this->legacyEndpoint),
-				'{' . Plugin::NS_CALENDARSERVER . '}getctag' => 'http://sabre.io/ns/sync/' . ($row['synctoken']?$row['synctoken']:'0'),
-				'{http://sabredav.org/ns}sync-token' => $row['synctoken']?$row['synctoken']:'0',
-				'{' . Plugin::NS_CALDAV . '}supported-calendar-component-set' => new SupportedCalendarComponentSet($components),
-				'{' . Plugin::NS_CALDAV . '}schedule-calendar-transp' => new ScheduleCalendarTransp('transparent'),
-				'{' . \OCA\DAV\DAV\Sharing\Plugin::NS_OWNCLOUD . '}owner-principal' => $this->convertPrincipal($row['principaluri'], !$this->legacyEndpoint),
-				$readOnlyPropertyName => $readOnly,
-			];
-
-			foreach($this->propertyMap as $xmlName=>$dbName) {
-				$calendar[$xmlName] = $row[$dbName];
-			}
-
-			$this->addOwnerPrincipal($calendar);
-
-			$calendars[$calendar['id']] = $calendar;
-		}
-		$result->closeCursor();
-
-		return array_values($calendars);
-	}
-
-	/**
-	 * @param $principalUri
-	 * @return array
-	 */
-	public function getUsersOwnCalendars($principalUri) {
-		$principalUri = $this->convertPrincipal($principalUri, true);
-		$fields = array_values($this->propertyMap);
-		$fields[] = 'id';
-		$fields[] = 'uri';
-		$fields[] = 'synctoken';
-		$fields[] = 'components';
-		$fields[] = 'principaluri';
-		$fields[] = 'transparent';
-		// Making fields a comma-delimited list
-		$query = $this->db->getQueryBuilder();
-		$query->select($fields)->from('calendars')
-			->where($query->expr()->eq('principaluri', $query->createNamedParameter($principalUri)))
-			->orderBy('calendarorder', 'ASC');
-		$stmt = $query->execute();
-		$calendars = [];
-		while($row = $stmt->fetch(\PDO::FETCH_ASSOC)) {
-			$components = [];
-			if ($row['components']) {
-				$components = explode(',',$row['components']);
-			}
-			$calendar = [
-				'id' => $row['id'],
-				'uri' => $row['uri'],
-				'principaluri' => $this->convertPrincipal($row['principaluri'], !$this->legacyEndpoint),
-				'{' . Plugin::NS_CALENDARSERVER . '}getctag' => 'http://sabre.io/ns/sync/' . ($row['synctoken']?$row['synctoken']:'0'),
-				'{http://sabredav.org/ns}sync-token' => $row['synctoken']?$row['synctoken']:'0',
-				'{' . Plugin::NS_CALDAV . '}supported-calendar-component-set' => new SupportedCalendarComponentSet($components),
-				'{' . Plugin::NS_CALDAV . '}schedule-calendar-transp' => new ScheduleCalendarTransp($row['transparent']?'transparent':'opaque'),
-			];
-			foreach($this->propertyMap as $xmlName=>$dbName) {
-				$calendar[$xmlName] = $row[$dbName];
-			}
-
-			$this->addOwnerPrincipal($calendar);
-
-			if (!isset($calendars[$calendar['id']])) {
-				$calendars[$calendar['id']] = $calendar;
-			}
-		}
-		$stmt->closeCursor();
-		return array_values($calendars);
-	}
-
-
-	/**
-	 * @param $uid
-	 * @return string
-	 */
-	private function getUserDisplayName($uid) {
-		if (!isset($this->userDisplayNames[$uid])) {
-			$user = $this->userManager->get($uid);
-
-			if ($user instanceof IUser) {
-				$this->userDisplayNames[$uid] = $user->getDisplayName();
-			} else {
-				$this->userDisplayNames[$uid] = $uid;
-			}
-		}
-
-		return $this->userDisplayNames[$uid];
-	}
-
-	/**
-	 * @return array
-	 */
-	public function getPublicCalendars() {
-		$fields = array_values($this->propertyMap);
-		$fields[] = 'a.id';
-		$fields[] = 'a.uri';
-		$fields[] = 'a.synctoken';
-		$fields[] = 'a.components';
-		$fields[] = 'a.principaluri';
-		$fields[] = 'a.transparent';
-		$fields[] = 's.access';
-		$fields[] = 's.publicuri';
-		$calendars = [];
-		$query = $this->db->getQueryBuilder();
-		$result = $query->select($fields)
-			->from('dav_shares', 's')
-			->join('s', 'calendars', 'a', $query->expr()->eq('s.resourceid', 'a.id'))
-			->where($query->expr()->in('s.access', $query->createNamedParameter(self::ACCESS_PUBLIC)))
-			->andWhere($query->expr()->eq('s.type', $query->createNamedParameter('calendar')))
-			->execute();
-
-		while($row = $result->fetch()) {
-			list(, $name) = Uri\split($row['principaluri']);
-			$row['displayname'] = $row['displayname'] . "($name)";
-			$components = [];
-			if ($row['components']) {
-				$components = explode(',',$row['components']);
-			}
-			$calendar = [
-				'id' => $row['id'],
-				'uri' => $row['publicuri'],
-				'principaluri' => $this->convertPrincipal($row['principaluri'], !$this->legacyEndpoint),
-				'{' . Plugin::NS_CALENDARSERVER . '}getctag' => 'http://sabre.io/ns/sync/' . ($row['synctoken']?$row['synctoken']:'0'),
-				'{http://sabredav.org/ns}sync-token' => $row['synctoken']?$row['synctoken']:'0',
-				'{' . Plugin::NS_CALDAV . '}supported-calendar-component-set' => new SupportedCalendarComponentSet($components),
-				'{' . Plugin::NS_CALDAV . '}schedule-calendar-transp' => new ScheduleCalendarTransp($row['transparent']?'transparent':'opaque'),
-				'{' . \OCA\DAV\DAV\Sharing\Plugin::NS_OWNCLOUD . '}owner-principal' => $this->convertPrincipal($row['principaluri'], $this->legacyEndpoint),
-				'{' . \OCA\DAV\DAV\Sharing\Plugin::NS_OWNCLOUD . '}read-only' => (int)$row['access'] === Backend::ACCESS_READ,
-				'{' . \OCA\DAV\DAV\Sharing\Plugin::NS_OWNCLOUD . '}public' => (int)$row['access'] === self::ACCESS_PUBLIC,
-			];
-
-			foreach($this->propertyMap as $xmlName=>$dbName) {
-				$calendar[$xmlName] = $row[$dbName];
-			}
-
-			$this->addOwnerPrincipal($calendar);
-
-			if (!isset($calendars[$calendar['id']])) {
-				$calendars[$calendar['id']] = $calendar;
-			}
-		}
-		$result->closeCursor();
-
-		return array_values($calendars);
-	}
-
-	/**
-	 * @param string $uri
-	 * @return array
-	 * @throws NotFound
-	 */
-	public function getPublicCalendar($uri) {
-		$fields = array_values($this->propertyMap);
-		$fields[] = 'a.id';
-		$fields[] = 'a.uri';
-		$fields[] = 'a.synctoken';
-		$fields[] = 'a.components';
-		$fields[] = 'a.principaluri';
-		$fields[] = 'a.transparent';
-		$fields[] = 's.access';
-		$fields[] = 's.publicuri';
-		$query = $this->db->getQueryBuilder();
-		$result = $query->select($fields)
-			->from('dav_shares', 's')
-			->join('s', 'calendars', 'a', $query->expr()->eq('s.resourceid', 'a.id'))
-			->where($query->expr()->in('s.access', $query->createNamedParameter(self::ACCESS_PUBLIC)))
-			->andWhere($query->expr()->eq('s.type', $query->createNamedParameter('calendar')))
-			->andWhere($query->expr()->eq('s.publicuri', $query->createNamedParameter($uri)))
-			->execute();
-
-		$row = $result->fetch(\PDO::FETCH_ASSOC);
-
-		$result->closeCursor();
-
-		if ($row === false) {
-			throw new NotFound('Node with name \'' . $uri . '\' could not be found');
-		}
-
-		list(, $name) = Uri\split($row['principaluri']);
-		$row['displayname'] = $row['displayname'] . ' ' . "($name)";
-		$components = [];
-		if ($row['components']) {
-			$components = explode(',',$row['components']);
-		}
-		$calendar = [
-			'id' => $row['id'],
-			'uri' => $row['publicuri'],
-			'principaluri' => $this->convertPrincipal($row['principaluri'], !$this->legacyEndpoint),
-			'{' . Plugin::NS_CALENDARSERVER . '}getctag' => 'http://sabre.io/ns/sync/' . ($row['synctoken']?$row['synctoken']:'0'),
-			'{http://sabredav.org/ns}sync-token' => $row['synctoken']?$row['synctoken']:'0',
-			'{' . Plugin::NS_CALDAV . '}supported-calendar-component-set' => new SupportedCalendarComponentSet($components),
-			'{' . Plugin::NS_CALDAV . '}schedule-calendar-transp' => new ScheduleCalendarTransp($row['transparent']?'transparent':'opaque'),
-			'{' . \OCA\DAV\DAV\Sharing\Plugin::NS_OWNCLOUD . '}owner-principal' => $this->convertPrincipal($row['principaluri'], !$this->legacyEndpoint),
-			'{' . \OCA\DAV\DAV\Sharing\Plugin::NS_OWNCLOUD . '}read-only' => (int)$row['access'] === Backend::ACCESS_READ,
-			'{' . \OCA\DAV\DAV\Sharing\Plugin::NS_OWNCLOUD . '}public' => (int)$row['access'] === self::ACCESS_PUBLIC,
-		];
-
-		foreach($this->propertyMap as $xmlName=>$dbName) {
-			$calendar[$xmlName] = $row[$dbName];
-		}
-
-		$this->addOwnerPrincipal($calendar);
-
-		return $calendar;
-
-	}
-
-	/**
-	 * @param string $principal
-	 * @param string $uri
-	 * @return array|null
-	 */
-	public function getCalendarByUri($principal, $uri) {
-		$fields = array_values($this->propertyMap);
-		$fields[] = 'id';
-		$fields[] = 'uri';
-		$fields[] = 'synctoken';
-		$fields[] = 'components';
-		$fields[] = 'principaluri';
-		$fields[] = 'transparent';
-
-		// Making fields a comma-delimited list
-		$query = $this->db->getQueryBuilder();
-		$query->select($fields)->from('calendars')
-			->where($query->expr()->eq('uri', $query->createNamedParameter($uri)))
-			->andWhere($query->expr()->eq('principaluri', $query->createNamedParameter($principal)))
-			->setMaxResults(1);
-		$stmt = $query->execute();
-
-		$row = $stmt->fetch(\PDO::FETCH_ASSOC);
-		$stmt->closeCursor();
-		if ($row === false) {
-			return null;
-		}
-
-		$components = [];
-		if ($row['components']) {
-			$components = explode(',',$row['components']);
-		}
-
-		$calendar = [
-			'id' => $row['id'],
-			'uri' => $row['uri'],
-			'principaluri' => $this->convertPrincipal($row['principaluri'], !$this->legacyEndpoint),
-			'{' . Plugin::NS_CALENDARSERVER . '}getctag' => 'http://sabre.io/ns/sync/' . ($row['synctoken']?$row['synctoken']:'0'),
-			'{http://sabredav.org/ns}sync-token' => $row['synctoken']?$row['synctoken']:'0',
-			'{' . Plugin::NS_CALDAV . '}supported-calendar-component-set' => new SupportedCalendarComponentSet($components),
-			'{' . Plugin::NS_CALDAV . '}schedule-calendar-transp' => new ScheduleCalendarTransp($row['transparent']?'transparent':'opaque'),
-		];
-
-		foreach($this->propertyMap as $xmlName=>$dbName) {
-			$calendar[$xmlName] = $row[$dbName];
-		}
-
-		$this->addOwnerPrincipal($calendar);
-
-		return $calendar;
-	}
-
-	/**
-	 * @param $calendarId
-	 * @return array|null
-	 */
-	public function getCalendarById($calendarId) {
-		$fields = array_values($this->propertyMap);
-		$fields[] = 'id';
-		$fields[] = 'uri';
-		$fields[] = 'synctoken';
-		$fields[] = 'components';
-		$fields[] = 'principaluri';
-		$fields[] = 'transparent';
-
-		// Making fields a comma-delimited list
-		$query = $this->db->getQueryBuilder();
-		$query->select($fields)->from('calendars')
-			->where($query->expr()->eq('id', $query->createNamedParameter($calendarId)))
-			->setMaxResults(1);
-		$stmt = $query->execute();
-
-		$row = $stmt->fetch(\PDO::FETCH_ASSOC);
-		$stmt->closeCursor();
-		if ($row === false) {
-			return null;
-		}
-
-		$components = [];
-		if ($row['components']) {
-			$components = explode(',',$row['components']);
-		}
-
-		$calendar = [
-			'id' => $row['id'],
-			'uri' => $row['uri'],
-			'principaluri' => $this->convertPrincipal($row['principaluri'], !$this->legacyEndpoint),
-			'{' . Plugin::NS_CALENDARSERVER . '}getctag' => 'http://sabre.io/ns/sync/' . ($row['synctoken']?$row['synctoken']:'0'),
-			'{http://sabredav.org/ns}sync-token' => $row['synctoken']?$row['synctoken']:'0',
-			'{' . Plugin::NS_CALDAV . '}supported-calendar-component-set' => new SupportedCalendarComponentSet($components),
-			'{' . Plugin::NS_CALDAV . '}schedule-calendar-transp' => new ScheduleCalendarTransp($row['transparent']?'transparent':'opaque'),
-		];
-
-		foreach($this->propertyMap as $xmlName=>$dbName) {
-			$calendar[$xmlName] = $row[$dbName];
-		}
-
-		$this->addOwnerPrincipal($calendar);
-
-		return $calendar;
-	}
-
-	/**
-	 * @param $subscriptionId
-	 */
-	public function getSubscriptionById($subscriptionId) {
-		$fields = array_values($this->subscriptionPropertyMap);
-		$fields[] = 'id';
-		$fields[] = 'uri';
-		$fields[] = 'source';
-		$fields[] = 'synctoken';
-		$fields[] = 'principaluri';
-		$fields[] = 'lastmodified';
-
-		$query = $this->db->getQueryBuilder();
-		$query->select($fields)
-			->from('calendarsubscriptions')
-			->where($query->expr()->eq('id', $query->createNamedParameter($subscriptionId)))
-			->orderBy('calendarorder', 'asc');
-		$stmt =$query->execute();
-
-		$row = $stmt->fetch(\PDO::FETCH_ASSOC);
-		$stmt->closeCursor();
-		if ($row === false) {
-			return null;
-		}
-
-		$subscription = [
-			'id'           => $row['id'],
-			'uri'          => $row['uri'],
-			'principaluri' => $row['principaluri'],
-			'source'       => $row['source'],
-			'lastmodified' => $row['lastmodified'],
-			'{' . Plugin::NS_CALDAV . '}supported-calendar-component-set' => new SupportedCalendarComponentSet(['VTODO', 'VEVENT']),
-			'{http://sabredav.org/ns}sync-token' => $row['synctoken']?$row['synctoken']:'0',
-		];
-
-		foreach($this->subscriptionPropertyMap as $xmlName=>$dbName) {
-			if (!is_null($row[$dbName])) {
-				$subscription[$xmlName] = $row[$dbName];
-			}
-		}
-
-		return $subscription;
-	}
-
-	/**
-	 * Creates a new calendar for a principal.
-	 *
-	 * If the creation was a success, an id must be returned that can be used to reference
-	 * this calendar in other methods, such as updateCalendar.
-	 *
-	 * @param string $principalUri
-	 * @param string $calendarUri
-	 * @param array $properties
-	 * @return int
-	 * @suppress SqlInjectionChecker
-	 */
-	function createCalendar($principalUri, $calendarUri, array $properties) {
-		$values = [
-			'principaluri' => $this->convertPrincipal($principalUri, true),
-			'uri'          => $calendarUri,
-			'synctoken'    => 1,
-			'transparent'  => 0,
-			'components'   => 'VEVENT,VTODO',
-			'displayname'  => $calendarUri
-		];
-
-		// Default value
-		$sccs = '{urn:ietf:params:xml:ns:caldav}supported-calendar-component-set';
-		if (isset($properties[$sccs])) {
-			if (!($properties[$sccs] instanceof SupportedCalendarComponentSet)) {
-				throw new DAV\Exception('The ' . $sccs . ' property must be of type: \Sabre\CalDAV\Property\SupportedCalendarComponentSet');
-			}
-			$values['components'] = implode(',',$properties[$sccs]->getValue());
-		} else if (isset($properties['components'])) {
-			// Allow to provide components internally without having
-			// to create a SupportedCalendarComponentSet object
-			$values['components'] = $properties['components'];
-		}
-
-		$transp = '{' . Plugin::NS_CALDAV . '}schedule-calendar-transp';
-		if (isset($properties[$transp])) {
-			$values['transparent'] = (int) ($properties[$transp]->getValue() === 'transparent');
-		}
-
-		foreach($this->propertyMap as $xmlName=>$dbName) {
-			if (isset($properties[$xmlName])) {
-				$values[$dbName] = $properties[$xmlName];
-			}
-		}
-
-		$query = $this->db->getQueryBuilder();
-		$query->insert('calendars');
-		foreach($values as $column => $value) {
-			$query->setValue($column, $query->createNamedParameter($value));
-		}
-		$query->execute();
-		$calendarId = $query->getLastInsertId();
-
-		$this->dispatcher->dispatch('\OCA\DAV\CalDAV\CalDavBackend::createCalendar', new GenericEvent(
-			'\OCA\DAV\CalDAV\CalDavBackend::createCalendar',
-			[
-				'calendarId' => $calendarId,
-				'calendarData' => $this->getCalendarById($calendarId),
-		]));
-
-		return $calendarId;
-	}
-
-	/**
-	 * Updates properties for a calendar.
-	 *
-	 * The list of mutations is stored in a Sabre\DAV\PropPatch object.
-	 * To do the actual updates, you must tell this object which properties
-	 * you're going to process with the handle() method.
-	 *
-	 * Calling the handle method is like telling the PropPatch object "I
-	 * promise I can handle updating this property".
-	 *
-	 * Read the PropPatch documentation for more info and examples.
-	 *
-	 * @param mixed $calendarId
-	 * @param PropPatch $propPatch
-	 * @return void
-	 */
-	function updateCalendar($calendarId, PropPatch $propPatch) {
-		$supportedProperties = array_keys($this->propertyMap);
-		$supportedProperties[] = '{' . Plugin::NS_CALDAV . '}schedule-calendar-transp';
-
-		/**
-		 * @suppress SqlInjectionChecker
-		 */
-		$propPatch->handle($supportedProperties, function($mutations) use ($calendarId) {
-			$newValues = [];
-			foreach ($mutations as $propertyName => $propertyValue) {
-
-				switch ($propertyName) {
-					case '{' . Plugin::NS_CALDAV . '}schedule-calendar-transp' :
-						$fieldName = 'transparent';
-						$newValues[$fieldName] = (int) ($propertyValue->getValue() === 'transparent');
-						break;
-					default :
-						$fieldName = $this->propertyMap[$propertyName];
-						$newValues[$fieldName] = $propertyValue;
-						break;
-				}
-
-			}
-			$query = $this->db->getQueryBuilder();
-			$query->update('calendars');
-			foreach ($newValues as $fieldName => $value) {
-				$query->set($fieldName, $query->createNamedParameter($value));
-			}
-			$query->where($query->expr()->eq('id', $query->createNamedParameter($calendarId)));
-			$query->execute();
-
-			$this->addChange($calendarId, "", 2);
-
-			$this->dispatcher->dispatch('\OCA\DAV\CalDAV\CalDavBackend::updateCalendar', new GenericEvent(
-				'\OCA\DAV\CalDAV\CalDavBackend::updateCalendar',
-				[
-					'calendarId' => $calendarId,
-					'calendarData' => $this->getCalendarById($calendarId),
-					'shares' => $this->getShares($calendarId),
-					'propertyMutations' => $mutations,
-			]));
-
-			return true;
-		});
-	}
-
-	/**
-	 * Delete a calendar and all it's objects
-	 *
-	 * @param mixed $calendarId
-	 * @return void
-	 */
-	function deleteCalendar($calendarId) {
-		$this->dispatcher->dispatch('\OCA\DAV\CalDAV\CalDavBackend::deleteCalendar', new GenericEvent(
-			'\OCA\DAV\CalDAV\CalDavBackend::deleteCalendar',
-			[
-				'calendarId' => $calendarId,
-				'calendarData' => $this->getCalendarById($calendarId),
-				'shares' => $this->getShares($calendarId),
-		]));
-
-		$stmt = $this->db->prepare('DELETE FROM `*PREFIX*calendarobjects` WHERE `calendarid` = ? AND `calendartype` = ?');
-		$stmt->execute([$calendarId, self::CALENDAR_TYPE_CALENDAR]);
-
-		$stmt = $this->db->prepare('DELETE FROM `*PREFIX*calendars` WHERE `id` = ?');
-		$stmt->execute([$calendarId]);
-
-		$stmt = $this->db->prepare('DELETE FROM `*PREFIX*calendarchanges` WHERE `calendarid` = ? AND `calendartype` = ?');
-		$stmt->execute([$calendarId, self::CALENDAR_TYPE_CALENDAR]);
-
-		$this->calendarSharingBackend->deleteAllShares($calendarId);
-
-		$query = $this->db->getQueryBuilder();
-		$query->delete($this->dbObjectPropertiesTable)
-			->where($query->expr()->eq('calendarid', $query->createNamedParameter($calendarId)))
-			->andWhere($query->expr()->eq('calendartype', $query->createNamedParameter(self::CALENDAR_TYPE_CALENDAR)))
-			->execute();
-	}
-
-	/**
-	 * Delete all of an user's shares
-	 *
-	 * @param string $principaluri
-	 * @return void
-	 */
-	function deleteAllSharesByUser($principaluri) {
-		$this->calendarSharingBackend->deleteAllSharesByUser($principaluri);
-	}
-
-	/**
-	 * Returns all calendar objects within a calendar.
-	 *
-	 * Every item contains an array with the following keys:
-	 *   * calendardata - The iCalendar-compatible calendar data
-	 *   * uri - a unique key which will be used to construct the uri. This can
-	 *     be any arbitrary string, but making sure it ends with '.ics' is a
-	 *     good idea. This is only the basename, or filename, not the full
-	 *     path.
-	 *   * lastmodified - a timestamp of the last modification time
-	 *   * etag - An arbitrary string, surrounded by double-quotes. (e.g.:
-	 *   '"abcdef"')
-	 *   * size - The size of the calendar objects, in bytes.
-	 *   * component - optional, a string containing the type of object, such
-	 *     as 'vevent' or 'vtodo'. If specified, this will be used to populate
-	 *     the Content-Type header.
-	 *
-	 * Note that the etag is optional, but it's highly encouraged to return for
-	 * speed reasons.
-	 *
-	 * The calendardata is also optional. If it's not returned
-	 * 'getCalendarObject' will be called later, which *is* expected to return
-	 * calendardata.
-	 *
-	 * If neither etag or size are specified, the calendardata will be
-	 * used/fetched to determine these numbers. If both are specified the
-	 * amount of times this is needed is reduced by a great degree.
-	 *
-	 * @param mixed $id
-	 * @param int $calendarType
-	 * @return array
-	 */
-	public function getCalendarObjects($id, $calendarType=self::CALENDAR_TYPE_CALENDAR):array {
-		$query = $this->db->getQueryBuilder();
-		$query->select(['id', 'uri', 'lastmodified', 'etag', 'calendarid', 'size', 'componenttype', 'classification'])
-			->from('calendarobjects')
-			->where($query->expr()->eq('calendarid', $query->createNamedParameter($id)))
-			->andWhere($query->expr()->eq('calendartype', $query->createNamedParameter($calendarType)));
-		$stmt = $query->execute();
-
-		$result = [];
-		foreach($stmt->fetchAll(\PDO::FETCH_ASSOC) as $row) {
-			$result[] = [
-				'id'           => $row['id'],
-				'uri'          => $row['uri'],
-				'lastmodified' => $row['lastmodified'],
-				'etag'         => '"' . $row['etag'] . '"',
-				'calendarid'   => $row['calendarid'],
-				'size'         => (int)$row['size'],
-				'component'    => strtolower($row['componenttype']),
-				'classification'=> (int)$row['classification']
-			];
-		}
-
-		return $result;
-	}
-
-	/**
-	 * Returns information from a single calendar object, based on it's object
-	 * uri.
-	 *
-	 * The object uri is only the basename, or filename and not a full path.
-	 *
-	 * The returned array must have the same keys as getCalendarObjects. The
-	 * 'calendardata' object is required here though, while it's not required
-	 * for getCalendarObjects.
-	 *
-	 * This method must return null if the object did not exist.
-	 *
-	 * @param mixed $id
-	 * @param string $objectUri
-	 * @param int $calendarType
-	 * @return array|null
-	 */
-	public function getCalendarObject($id, $objectUri, $calendarType=self::CALENDAR_TYPE_CALENDAR) {
-		$query = $this->db->getQueryBuilder();
-		$query->select(['id', 'uri', 'lastmodified', 'etag', 'calendarid', 'size', 'calendardata', 'componenttype', 'classification'])
-			->from('calendarobjects')
-			->where($query->expr()->eq('calendarid', $query->createNamedParameter($id)))
-			->andWhere($query->expr()->eq('uri', $query->createNamedParameter($objectUri)))
-			->andWhere($query->expr()->eq('calendartype', $query->createNamedParameter($calendarType)));
-		$stmt = $query->execute();
-		$row = $stmt->fetch(\PDO::FETCH_ASSOC);
-
-		if(!$row) {
-			return null;
-		}
-
-		return [
-			'id'            => $row['id'],
-			'uri'           => $row['uri'],
-			'lastmodified'  => $row['lastmodified'],
-			'etag'          => '"' . $row['etag'] . '"',
-			'calendarid'    => $row['calendarid'],
-			'size'          => (int)$row['size'],
-			'calendardata'  => $this->readBlob($row['calendardata']),
-			'component'     => strtolower($row['componenttype']),
-			'classification'=> (int)$row['classification']
-		];
-	}
-
-	/**
-	 * Returns a list of calendar objects.
-	 *
-	 * This method should work identical to getCalendarObject, but instead
-	 * return all the calendar objects in the list as an array.
-	 *
-	 * If the backend supports this, it may allow for some speed-ups.
-	 *
-	 * @param mixed $calendarId
-	 * @param string[] $uris
-	 * @param int $calendarType
-	 * @return array
-	 */
-	public function getMultipleCalendarObjects($id, array $uris, $calendarType=self::CALENDAR_TYPE_CALENDAR):array {
-		if (empty($uris)) {
-			return [];
-		}
-
-		$chunks = array_chunk($uris, 100);
-		$objects = [];
-
-		$query = $this->db->getQueryBuilder();
-		$query->select(['id', 'uri', 'lastmodified', 'etag', 'calendarid', 'size', 'calendardata', 'componenttype', 'classification'])
-			->from('calendarobjects')
-			->where($query->expr()->eq('calendarid', $query->createNamedParameter($id)))
-			->andWhere($query->expr()->in('uri', $query->createParameter('uri')))
-			->andWhere($query->expr()->eq('calendartype', $query->createNamedParameter($calendarType)));
-
-		foreach ($chunks as $uris) {
-			$query->setParameter('uri', $uris, IQueryBuilder::PARAM_STR_ARRAY);
-			$result = $query->execute();
-
-			while ($row = $result->fetch()) {
-				$objects[] = [
-					'id'           => $row['id'],
-					'uri'          => $row['uri'],
-					'lastmodified' => $row['lastmodified'],
-					'etag'         => '"' . $row['etag'] . '"',
-					'calendarid'   => $row['calendarid'],
-					'size'         => (int)$row['size'],
-					'calendardata' => $this->readBlob($row['calendardata']),
-					'component'    => strtolower($row['componenttype']),
-					'classification' => (int)$row['classification']
-				];
-			}
-			$result->closeCursor();
-		}
-
-		return $objects;
-	}
-
-	/**
-	 * Creates a new calendar object.
-	 *
-	 * The object uri is only the basename, or filename and not a full path.
-	 *
-	 * It is possible return an etag from this function, which will be used in
-	 * the response to this PUT request. Note that the ETag must be surrounded
-	 * by double-quotes.
-	 *
-	 * However, you should only really return this ETag if you don't mangle the
-	 * calendar-data. If the result of a subsequent GET to this object is not
-	 * the exact same as this request body, you should omit the ETag.
-	 *
-	 * @param mixed $calendarId
-	 * @param string $objectUri
-	 * @param string $calendarData
-	 * @param int $calendarType
-	 * @return string
-	 */
-	function createCalendarObject($calendarId, $objectUri, $calendarData, $calendarType=self::CALENDAR_TYPE_CALENDAR) {
-		$extraData = $this->getDenormalizedData($calendarData);
-
-		$q = $this->db->getQueryBuilder();
-		$q->select($q->func()->count('*'))
-			->from('calendarobjects')
-			->where($q->expr()->eq('calendarid', $q->createNamedParameter($calendarId)))
-			->andWhere($q->expr()->eq('uid', $q->createNamedParameter($extraData['uid'])))
-			->andWhere($q->expr()->eq('calendartype', $q->createNamedParameter($calendarType)));
-
-		$result = $q->execute();
-		$count = (int) $result->fetchColumn();
-		$result->closeCursor();
-
-		if ($count !== 0) {
-			throw new \Sabre\DAV\Exception\BadRequest('Calendar object with uid already exists in this calendar collection.');
-		}
-
-		$query = $this->db->getQueryBuilder();
-		$query->insert('calendarobjects')
-			->values([
-				'calendarid' => $query->createNamedParameter($calendarId),
-				'uri' => $query->createNamedParameter($objectUri),
-				'calendardata' => $query->createNamedParameter($calendarData, IQueryBuilder::PARAM_LOB),
-				'lastmodified' => $query->createNamedParameter(time()),
-				'etag' => $query->createNamedParameter($extraData['etag']),
-				'size' => $query->createNamedParameter($extraData['size']),
-				'componenttype' => $query->createNamedParameter($extraData['componentType']),
-				'firstoccurence' => $query->createNamedParameter($extraData['firstOccurence']),
-				'lastoccurence' => $query->createNamedParameter($extraData['lastOccurence']),
-				'classification' => $query->createNamedParameter($extraData['classification']),
-				'uid' => $query->createNamedParameter($extraData['uid']),
-				'calendartype' => $query->createNamedParameter($calendarType),
-			])
-			->execute();
-
-		$this->updateProperties($calendarId, $objectUri, $calendarData, $calendarType);
-
-		if ($calendarType === self::CALENDAR_TYPE_CALENDAR) {
-			$this->dispatcher->dispatch('\OCA\DAV\CalDAV\CalDavBackend::createCalendarObject', new GenericEvent(
-				'\OCA\DAV\CalDAV\CalDavBackend::createCalendarObject',
-				[
-					'calendarId' => $calendarId,
-					'calendarData' => $this->getCalendarById($calendarId),
-					'shares' => $this->getShares($calendarId),
-					'objectData' => $this->getCalendarObject($calendarId, $objectUri),
-				]
-			));
-		} else {
-			$this->dispatcher->dispatch('\OCA\DAV\CalDAV\CalDavBackend::createCachedCalendarObject', new GenericEvent(
-				'\OCA\DAV\CalDAV\CalDavBackend::createCachedCalendarObject',
-				[
-					'subscriptionId' => $calendarId,
-					'calendarData' => $this->getCalendarById($calendarId),
-					'shares' => $this->getShares($calendarId),
-					'objectData' => $this->getCalendarObject($calendarId, $objectUri),
-				]
-			));
-		}
-		$this->addChange($calendarId, $objectUri, 1, $calendarType);
-
-		return '"' . $extraData['etag'] . '"';
-	}
-
-	/**
-	 * Updates an existing calendarobject, based on it's uri.
-	 *
-	 * The object uri is only the basename, or filename and not a full path.
-	 *
-	 * It is possible return an etag from this function, which will be used in
-	 * the response to this PUT request. Note that the ETag must be surrounded
-	 * by double-quotes.
-	 *
-	 * However, you should only really return this ETag if you don't mangle the
-	 * calendar-data. If the result of a subsequent GET to this object is not
-	 * the exact same as this request body, you should omit the ETag.
-	 *
-	 * @param mixed $calendarId
-	 * @param string $objectUri
-	 * @param string $calendarData
-	 * @param int $calendarType
-	 * @return string
-	 */
-	function updateCalendarObject($calendarId, $objectUri, $calendarData, $calendarType=self::CALENDAR_TYPE_CALENDAR) {
-		$extraData = $this->getDenormalizedData($calendarData);
-		$query = $this->db->getQueryBuilder();
-		$query->update('calendarobjects')
-				->set('calendardata', $query->createNamedParameter($calendarData, IQueryBuilder::PARAM_LOB))
-				->set('lastmodified', $query->createNamedParameter(time()))
-				->set('etag', $query->createNamedParameter($extraData['etag']))
-				->set('size', $query->createNamedParameter($extraData['size']))
-				->set('componenttype', $query->createNamedParameter($extraData['componentType']))
-				->set('firstoccurence', $query->createNamedParameter($extraData['firstOccurence']))
-				->set('lastoccurence', $query->createNamedParameter($extraData['lastOccurence']))
-				->set('classification', $query->createNamedParameter($extraData['classification']))
-				->set('uid', $query->createNamedParameter($extraData['uid']))
-			->where($query->expr()->eq('calendarid', $query->createNamedParameter($calendarId)))
-			->andWhere($query->expr()->eq('uri', $query->createNamedParameter($objectUri)))
-			->andWhere($query->expr()->eq('calendartype', $query->createNamedParameter($calendarType)))
-			->execute();
-
-		$this->updateProperties($calendarId, $objectUri, $calendarData, $calendarType);
-
-		$data = $this->getCalendarObject($calendarId, $objectUri);
-		if (is_array($data)) {
-			if ($calendarType === self::CALENDAR_TYPE_CALENDAR) {
-				$this->dispatcher->dispatch('\OCA\DAV\CalDAV\CalDavBackend::updateCalendarObject', new GenericEvent(
-					'\OCA\DAV\CalDAV\CalDavBackend::updateCalendarObject',
-					[
-						'calendarId' => $calendarId,
-						'calendarData' => $this->getCalendarById($calendarId),
-						'shares' => $this->getShares($calendarId),
-						'objectData' => $data,
-					]
-				));
-			} else {
-				$this->dispatcher->dispatch('\OCA\DAV\CalDAV\CalDavBackend::updateCachedCalendarObject', new GenericEvent(
-					'\OCA\DAV\CalDAV\CalDavBackend::updateCachedCalendarObject',
-					[
-						'subscriptionId' => $calendarId,
-						'calendarData' => $this->getCalendarById($calendarId),
-						'shares' => $this->getShares($calendarId),
-						'objectData' => $data,
-					]
-				));
-			}
-		}
-		$this->addChange($calendarId, $objectUri, 2, $calendarType);
-
-		return '"' . $extraData['etag'] . '"';
-	}
-
-	/**
-	 * @param int $calendarObjectId
-	 * @param int $classification
-	 */
-	public function setClassification($calendarObjectId, $classification) {
-		if (!in_array($classification, [
-			self::CLASSIFICATION_PUBLIC, self::CLASSIFICATION_PRIVATE, self::CLASSIFICATION_CONFIDENTIAL
-		])) {
-			throw new \InvalidArgumentException();
-		}
-		$query = $this->db->getQueryBuilder();
-		$query->update('calendarobjects')
-			->set('classification', $query->createNamedParameter($classification))
-			->where($query->expr()->eq('id', $query->createNamedParameter($calendarObjectId)))
-			->execute();
-	}
-
-	/**
-	 * Deletes an existing calendar object.
-	 *
-	 * The object uri is only the basename, or filename and not a full path.
-	 *
-	 * @param mixed $calendarId
-	 * @param string $objectUri
-	 * @param int $calendarType
-	 * @return void
-	 */
-	function deleteCalendarObject($calendarId, $objectUri, $calendarType=self::CALENDAR_TYPE_CALENDAR) {
-		$data = $this->getCalendarObject($calendarId, $objectUri, $calendarType);
-		if (is_array($data)) {
-			if ($calendarType === self::CALENDAR_TYPE_CALENDAR) {
-				$this->dispatcher->dispatch('\OCA\DAV\CalDAV\CalDavBackend::deleteCalendarObject', new GenericEvent(
-					'\OCA\DAV\CalDAV\CalDavBackend::deleteCalendarObject',
-					[
-						'calendarId' => $calendarId,
-						'calendarData' => $this->getCalendarById($calendarId),
-						'shares' => $this->getShares($calendarId),
-						'objectData' => $data,
-					]
-				));
-			} else {
-				$this->dispatcher->dispatch('\OCA\DAV\CalDAV\CalDavBackend::deleteCachedCalendarObject', new GenericEvent(
-					'\OCA\DAV\CalDAV\CalDavBackend::deleteCachedCalendarObject',
-					[
-						'subscriptionId' => $calendarId,
-						'calendarData' => $this->getCalendarById($calendarId),
-						'shares' => $this->getShares($calendarId),
-						'objectData' => $data,
-					]
-				));
-			}
-		}
-
-		$stmt = $this->db->prepare('DELETE FROM `*PREFIX*calendarobjects` WHERE `calendarid` = ? AND `uri` = ? AND `calendartype` = ?');
-		$stmt->execute([$calendarId, $objectUri, $calendarType]);
-
-		if (is_array($data)) {
-			$this->purgeProperties($calendarId, $data['id'], $calendarType);
-		}
-
-		$this->addChange($calendarId, $objectUri, 3, $calendarType);
-	}
-
-	/**
-	 * Performs a calendar-query on the contents of this calendar.
-	 *
-	 * The calendar-query is defined in RFC4791 : CalDAV. Using the
-	 * calendar-query it is possible for a client to request a specific set of
-	 * object, based on contents of iCalendar properties, date-ranges and
-	 * iCalendar component types (VTODO, VEVENT).
-	 *
-	 * This method should just return a list of (relative) urls that match this
-	 * query.
-	 *
-	 * The list of filters are specified as an array. The exact array is
-	 * documented by Sabre\CalDAV\CalendarQueryParser.
-	 *
-	 * Note that it is extremely likely that getCalendarObject for every path
-	 * returned from this method will be called almost immediately after. You
-	 * may want to anticipate this to speed up these requests.
-	 *
-	 * This method provides a default implementation, which parses *all* the
-	 * iCalendar objects in the specified calendar.
-	 *
-	 * This default may well be good enough for personal use, and calendars
-	 * that aren't very large. But if you anticipate high usage, big calendars
-	 * or high loads, you are strongly advised to optimize certain paths.
-	 *
-	 * The best way to do so is override this method and to optimize
-	 * specifically for 'common filters'.
-	 *
-	 * Requests that are extremely common are:
-	 *   * requests for just VEVENTS
-	 *   * requests for just VTODO
-	 *   * requests with a time-range-filter on either VEVENT or VTODO.
-	 *
-	 * ..and combinations of these requests. It may not be worth it to try to
-	 * handle every possible situation and just rely on the (relatively
-	 * easy to use) CalendarQueryValidator to handle the rest.
-	 *
-	 * Note that especially time-range-filters may be difficult to parse. A
-	 * time-range filter specified on a VEVENT must for instance also handle
-	 * recurrence rules correctly.
-	 * A good example of how to interprete all these filters can also simply
-	 * be found in Sabre\CalDAV\CalendarQueryFilter. This class is as correct
-	 * as possible, so it gives you a good idea on what type of stuff you need
-	 * to think of.
-	 *
-	 * @param mixed $id
-	 * @param array $filters
-	 * @param int $calendarType
-	 * @return array
-	 */
-	public function calendarQuery($id, array $filters, $calendarType=self::CALENDAR_TYPE_CALENDAR):array {
-		$componentType = null;
-		$requirePostFilter = true;
-		$timeRange = null;
-
-		// if no filters were specified, we don't need to filter after a query
-		if (!$filters['prop-filters'] && !$filters['comp-filters']) {
-			$requirePostFilter = false;
-		}
-
-		// Figuring out if there's a component filter
-		if (count($filters['comp-filters']) > 0 && !$filters['comp-filters'][0]['is-not-defined']) {
-			$componentType = $filters['comp-filters'][0]['name'];
-
-			// Checking if we need post-filters
-			if (!$filters['prop-filters'] && !$filters['comp-filters'][0]['comp-filters'] && !$filters['comp-filters'][0]['time-range'] && !$filters['comp-filters'][0]['prop-filters']) {
-				$requirePostFilter = false;
-			}
-			// There was a time-range filter
-			if ($componentType === 'VEVENT' && isset($filters['comp-filters'][0]['time-range'])) {
-				$timeRange = $filters['comp-filters'][0]['time-range'];
-
-				// If start time OR the end time is not specified, we can do a
-				// 100% accurate mysql query.
-				if (!$filters['prop-filters'] && !$filters['comp-filters'][0]['comp-filters'] && !$filters['comp-filters'][0]['prop-filters'] && (!$timeRange['start'] || !$timeRange['end'])) {
-					$requirePostFilter = false;
-				}
-			}
-
-		}
-		$columns = ['uri'];
-		if ($requirePostFilter) {
-			$columns = ['uri', 'calendardata'];
-		}
-		$query = $this->db->getQueryBuilder();
-		$query->select($columns)
-			->from('calendarobjects')
-			->where($query->expr()->eq('calendarid', $query->createNamedParameter($id)))
-			->andWhere($query->expr()->eq('calendartype', $query->createNamedParameter($calendarType)));
-
-		if ($componentType) {
-			$query->andWhere($query->expr()->eq('componenttype', $query->createNamedParameter($componentType)));
-		}
-
-		if ($timeRange && $timeRange['start']) {
-			$query->andWhere($query->expr()->gt('lastoccurence', $query->createNamedParameter($timeRange['start']->getTimeStamp())));
-		}
-		if ($timeRange && $timeRange['end']) {
-			$query->andWhere($query->expr()->lt('firstoccurence', $query->createNamedParameter($timeRange['end']->getTimeStamp())));
-		}
-
-		$stmt = $query->execute();
-
-		$result = [];
-		while($row = $stmt->fetch(\PDO::FETCH_ASSOC)) {
-			if ($requirePostFilter) {
-				// validateFilterForObject will parse the calendar data
-				// catch parsing errors
-				try {
-					$matches = $this->validateFilterForObject($row, $filters);
-				} catch(ParseException $ex) {
-					$this->logger->logException($ex, [
-						'app' => 'dav',
-						'message' => 'Caught parsing exception for calendar data. This usually indicates invalid calendar data. calendar-id:'.$id.' uri:'.$row['uri']
-					]);
-					continue;
-				} catch (InvalidDataException $ex) {
-					$this->logger->logException($ex, [
-						'app' => 'dav',
-						'message' => 'Caught invalid data exception for calendar data. This usually indicates invalid calendar data. calendar-id:'.$id.' uri:'.$row['uri']
-					]);
-					continue;
-				}
-
-				if (!$matches) {
-					continue;
-				}
-			}
-			$result[] = $row['uri'];
-		}
-
-		return $result;
-	}
-
-	/**
-	 * custom Nextcloud search extension for CalDAV
-	 *
-	 * TODO - this should optionally cover cached calendar objects as well
-	 *
-	 * @param string $principalUri
-	 * @param array $filters
-	 * @param integer|null $limit
-	 * @param integer|null $offset
-	 * @return array
-	 */
-	public function calendarSearch($principalUri, array $filters, $limit=null, $offset=null) {
-		$calendars = $this->getCalendarsForUser($principalUri);
-		$ownCalendars = [];
-		$sharedCalendars = [];
-
-		$uriMapper = [];
-
-		foreach($calendars as $calendar) {
-			if ($calendar['{http://owncloud.org/ns}owner-principal'] === $principalUri) {
-				$ownCalendars[] = $calendar['id'];
-			} else {
-				$sharedCalendars[] = $calendar['id'];
-			}
-			$uriMapper[$calendar['id']] = $calendar['uri'];
-		}
-		if (count($ownCalendars) === 0 && count($sharedCalendars) === 0) {
-			return [];
-		}
-
-		$query = $this->db->getQueryBuilder();
-		// Calendar id expressions
-		$calendarExpressions = [];
-		foreach($ownCalendars as $id) {
-			$calendarExpressions[] = $query->expr()->andX(
-				$query->expr()->eq('c.calendarid',
-					$query->createNamedParameter($id)),
-				$query->expr()->eq('c.calendartype',
-						$query->createNamedParameter(self::CALENDAR_TYPE_CALENDAR)));
-		}
-		foreach($sharedCalendars as $id) {
-			$calendarExpressions[] = $query->expr()->andX(
-				$query->expr()->eq('c.calendarid',
-					$query->createNamedParameter($id)),
-				$query->expr()->eq('c.classification',
-					$query->createNamedParameter(self::CLASSIFICATION_PUBLIC)),
-				$query->expr()->eq('c.calendartype',
-					$query->createNamedParameter(self::CALENDAR_TYPE_CALENDAR)));
-		}
-
-		if (count($calendarExpressions) === 1) {
-			$calExpr = $calendarExpressions[0];
-		} else {
-			$calExpr = call_user_func_array([$query->expr(), 'orX'], $calendarExpressions);
-		}
-
-		// Component expressions
-		$compExpressions = [];
-		foreach($filters['comps'] as $comp) {
-			$compExpressions[] = $query->expr()
-				->eq('c.componenttype', $query->createNamedParameter($comp));
-		}
-
-		if (count($compExpressions) === 1) {
-			$compExpr = $compExpressions[0];
-		} else {
-			$compExpr = call_user_func_array([$query->expr(), 'orX'], $compExpressions);
-		}
-
-		if (!isset($filters['props'])) {
-			$filters['props'] = [];
-		}
-		if (!isset($filters['params'])) {
-			$filters['params'] = [];
-		}
-
-		$propParamExpressions = [];
-		foreach($filters['props'] as $prop) {
-			$propParamExpressions[] = $query->expr()->andX(
-				$query->expr()->eq('i.name', $query->createNamedParameter($prop)),
-				$query->expr()->isNull('i.parameter')
-			);
-		}
-		foreach($filters['params'] as $param) {
-			$propParamExpressions[] = $query->expr()->andX(
-				$query->expr()->eq('i.name', $query->createNamedParameter($param['property'])),
-				$query->expr()->eq('i.parameter', $query->createNamedParameter($param['parameter']))
-			);
-		}
-
-		if (count($propParamExpressions) === 1) {
-			$propParamExpr = $propParamExpressions[0];
-		} else {
-			$propParamExpr = call_user_func_array([$query->expr(), 'orX'], $propParamExpressions);
-		}
-
-		$query->select(['c.calendarid', 'c.uri'])
-			->from($this->dbObjectPropertiesTable, 'i')
-			->join('i', 'calendarobjects', 'c', $query->expr()->eq('i.objectid', 'c.id'))
-			->where($calExpr)
-			->andWhere($compExpr)
-			->andWhere($propParamExpr)
-			->andWhere($query->expr()->iLike('i.value',
-				$query->createNamedParameter('%'.$this->db->escapeLikeParameter($filters['search-term']).'%')));
-
-		if ($offset) {
-			$query->setFirstResult($offset);
-		}
-		if ($limit) {
-			$query->setMaxResults($limit);
-		}
-
-		$stmt = $query->execute();
-
-		$result = [];
-		while($row = $stmt->fetch(\PDO::FETCH_ASSOC)) {
-			$path = $uriMapper[$row['calendarid']] . '/' . $row['uri'];
-			if (!in_array($path, $result)) {
-				$result[] = $path;
-			}
-		}
-
-		return $result;
-	}
-
-	/**
-	 * used for Nextcloud's calendar API
-	 *
-	 * @param array $calendarInfo
-	 * @param string $pattern
-	 * @param array $searchProperties
-	 * @param array $options
-	 * @param integer|null $limit
-	 * @param integer|null $offset
-	 *
-	 * @return array
-	 */
-	public function search(array $calendarInfo, $pattern, array $searchProperties,
-						   array $options, $limit, $offset) {
-		$outerQuery = $this->db->getQueryBuilder();
-		$innerQuery = $this->db->getQueryBuilder();
-
-		$innerQuery->selectDistinct('op.objectid')
-			->from($this->dbObjectPropertiesTable, 'op')
-			->andWhere($innerQuery->expr()->eq('op.calendarid',
-				$outerQuery->createNamedParameter($calendarInfo['id'])))
-			->andWhere($innerQuery->expr()->eq('op.calendartype',
-				$outerQuery->createNamedParameter(self::CALENDAR_TYPE_CALENDAR)));
-
-		// only return public items for shared calendars for now
-		if ($calendarInfo['principaluri'] !== $calendarInfo['{http://owncloud.org/ns}owner-principal']) {
-			$innerQuery->andWhere($innerQuery->expr()->eq('c.classification',
-				$outerQuery->createNamedParameter(self::CLASSIFICATION_PUBLIC)));
-		}
-
-		$or = $innerQuery->expr()->orX();
-		foreach($searchProperties as $searchProperty) {
-			$or->add($innerQuery->expr()->eq('op.name',
-				$outerQuery->createNamedParameter($searchProperty)));
-		}
-		$innerQuery->andWhere($or);
-
-		if ($pattern !== '') {
-			$innerQuery->andWhere($innerQuery->expr()->iLike('op.value',
-				$outerQuery->createNamedParameter('%' .
-					$this->db->escapeLikeParameter($pattern) . '%')));
-		}
-
-		$outerQuery->select('c.id', 'c.calendardata', 'c.componenttype', 'c.uid', 'c.uri')
-			->from('calendarobjects', 'c');
-
-		if (isset($options['timerange'])) {
-			if (isset($options['timerange']['start']) && $options['timerange']['start'] instanceof DateTime) {
-				$outerQuery->andWhere($outerQuery->expr()->gt('lastoccurence',
-					$outerQuery->createNamedParameter($options['timerange']['start']->getTimeStamp())));
-
-			}
-			if (isset($options['timerange']['end']) && $options['timerange']['end'] instanceof DateTime) {
-				$outerQuery->andWhere($outerQuery->expr()->lt('firstoccurence',
-					$outerQuery->createNamedParameter($options['timerange']['end']->getTimeStamp())));
-			}
-		}
-
-		if (isset($options['types'])) {
-			$or = $outerQuery->expr()->orX();
-			foreach($options['types'] as $type) {
-				$or->add($outerQuery->expr()->eq('componenttype',
-					$outerQuery->createNamedParameter($type)));
-			}
-			$outerQuery->andWhere($or);
-		}
-
-		$outerQuery->andWhere($outerQuery->expr()->in('c.id',
-			$outerQuery->createFunction($innerQuery->getSQL())));
-
-		if ($offset) {
-			$outerQuery->setFirstResult($offset);
-		}
-		if ($limit) {
-			$outerQuery->setMaxResults($limit);
-		}
-
-		$result = $outerQuery->execute();
-		$calendarObjects = $result->fetchAll();
-
-		return array_map(function($o) {
-			$calendarData = Reader::read($o['calendardata']);
-			$comps = $calendarData->getComponents();
-			$objects = [];
-			$timezones = [];
-			foreach($comps as $comp) {
-				if ($comp instanceof VTimeZone) {
-					$timezones[] = $comp;
-				} else {
-					$objects[] = $comp;
-				}
-			}
-
-			return [
-				'id' => $o['id'],
-				'type' => $o['componenttype'],
-				'uid' => $o['uid'],
-				'uri' => $o['uri'],
-				'objects' => array_map(function($c) {
-					return $this->transformSearchData($c);
-				}, $objects),
-				'timezones' => array_map(function($c) {
-					return $this->transformSearchData($c);
-				}, $timezones),
-			];
-		}, $calendarObjects);
-	}
-
-	/**
-	 * @param Component $comp
-	 * @return array
-	 */
-	private function transformSearchData(Component $comp) {
-		$data = [];
-		/** @var Component[] $subComponents */
-		$subComponents = $comp->getComponents();
-		/** @var Property[] $properties */
-		$properties = array_filter($comp->children(), function($c) {
-			return $c instanceof Property;
-		});
-		$validationRules = $comp->getValidationRules();
-
-		foreach($subComponents as $subComponent) {
-			$name = $subComponent->name;
-			if (!isset($data[$name])) {
-				$data[$name] = [];
-			}
-			$data[$name][] = $this->transformSearchData($subComponent);
-		}
-
-		foreach($properties as $property) {
-			$name = $property->name;
-			if (!isset($validationRules[$name])) {
-				$validationRules[$name] = '*';
-			}
-
-			$rule = $validationRules[$property->name];
-			if ($rule === '+' || $rule === '*') { // multiple
-				if (!isset($data[$name])) {
-					$data[$name] = [];
-				}
-
-				$data[$name][] = $this->transformSearchProperty($property);
-			} else { // once
-				$data[$name] = $this->transformSearchProperty($property);
-			}
-		}
-
-		return $data;
-	}
-
-	/**
-	 * @param Property $prop
-	 * @return array
-	 */
-	private function transformSearchProperty(Property $prop) {
-		// No need to check Date, as it extends DateTime
-		if ($prop instanceof Property\ICalendar\DateTime) {
-			$value = $prop->getDateTime();
-		} else {
-			$value = $prop->getValue();
-		}
-
-		return [
-			$value,
-			$prop->parameters()
-		];
-	}
-
-	/**
-	 * Searches through all of a users calendars and calendar objects to find
-	 * an object with a specific UID.
-	 *
-	 * This method should return the path to this object, relative to the
-	 * calendar home, so this path usually only contains two parts:
-	 *
-	 * calendarpath/objectpath.ics
-	 *
-	 * If the uid is not found, return null.
-	 *
-	 * This method should only consider * objects that the principal owns, so
-	 * any calendars owned by other principals that also appear in this
-	 * collection should be ignored.
-	 *
-	 * @param string $principalUri
-	 * @param string $uid
-	 * @return string|null
-	 */
-	function getCalendarObjectByUID($principalUri, $uid) {
-
-		$query = $this->db->getQueryBuilder();
-		$query->selectAlias('c.uri', 'calendaruri')->selectAlias('co.uri', 'objecturi')
-			->from('calendarobjects', 'co')
-			->leftJoin('co', 'calendars', 'c', $query->expr()->eq('co.calendarid', 'c.id'))
-			->where($query->expr()->eq('c.principaluri', $query->createNamedParameter($principalUri)))
-			->andWhere($query->expr()->eq('co.uid', $query->createNamedParameter($uid)))
-			->andWhere($query->expr()->eq('co.uid', $query->createNamedParameter($uid)));
-
-		$stmt = $query->execute();
-
-		if ($row = $stmt->fetch(\PDO::FETCH_ASSOC)) {
-			return $row['calendaruri'] . '/' . $row['objecturi'];
-		}
-
-		return null;
-	}
-
-	/**
-	 * The getChanges method returns all the changes that have happened, since
-	 * the specified syncToken in the specified calendar.
-	 *
-	 * This function should return an array, such as the following:
-	 *
-	 * [
-	 *   'syncToken' => 'The current synctoken',
-	 *   'added'   => [
-	 *      'new.txt',
-	 *   ],
-	 *   'modified'   => [
-	 *      'modified.txt',
-	 *   ],
-	 *   'deleted' => [
-	 *      'foo.php.bak',
-	 *      'old.txt'
-	 *   ]
-	 * );
-	 *
-	 * The returned syncToken property should reflect the *current* syncToken
-	 * of the calendar, as reported in the {http://sabredav.org/ns}sync-token
-	 * property This is * needed here too, to ensure the operation is atomic.
-	 *
-	 * If the $syncToken argument is specified as null, this is an initial
-	 * sync, and all members should be reported.
-	 *
-	 * The modified property is an array of nodenames that have changed since
-	 * the last token.
-	 *
-	 * The deleted property is an array with nodenames, that have been deleted
-	 * from collection.
-	 *
-	 * The $syncLevel argument is basically the 'depth' of the report. If it's
-	 * 1, you only have to report changes that happened only directly in
-	 * immediate descendants. If it's 2, it should also include changes from
-	 * the nodes below the child collections. (grandchildren)
-	 *
-	 * The $limit argument allows a client to specify how many results should
-	 * be returned at most. If the limit is not specified, it should be treated
-	 * as infinite.
-	 *
-	 * If the limit (infinite or not) is higher than you're willing to return,
-	 * you should throw a Sabre\DAV\Exception\TooMuchMatches() exception.
-	 *
-	 * If the syncToken is expired (due to data cleanup) or unknown, you must
-	 * return null.
-	 *
-	 * The limit is 'suggestive'. You are free to ignore it.
-	 *
-	 * @param string $calendarId
-	 * @param string $syncToken
-	 * @param int $syncLevel
-	 * @param int $limit
-	 * @param int $calendarType
-	 * @return array
-	 */
-	function getChangesForCalendar($calendarId, $syncToken, $syncLevel, $limit = null, $calendarType=self::CALENDAR_TYPE_CALENDAR) {
-		// Current synctoken
-		$stmt = $this->db->prepare('SELECT `synctoken` FROM `*PREFIX*calendars` WHERE `id` = ?');
-		$stmt->execute([ $calendarId ]);
-		$currentToken = $stmt->fetchColumn(0);
-
-		if (is_null($currentToken)) {
-			return null;
-		}
-
-		$result = [
-			'syncToken' => $currentToken,
-			'added'     => [],
-			'modified'  => [],
-			'deleted'   => [],
-		];
-
-		if ($syncToken) {
-
-			$query = "SELECT `uri`, `operation` FROM `*PREFIX*calendarchanges` WHERE `synctoken` >= ? AND `synctoken` < ? AND `calendarid` = ? AND `calendartype` = ? ORDER BY `synctoken`";
-			if ($limit>0) {
-				$query.= " LIMIT " . (int)$limit;
-			}
-
-			// Fetching all changes
-			$stmt = $this->db->prepare($query);
-			$stmt->execute([$syncToken, $currentToken, $calendarId, $calendarType]);
-
-			$changes = [];
-
-			// This loop ensures that any duplicates are overwritten, only the
-			// last change on a node is relevant.
-			while($row = $stmt->fetch(\PDO::FETCH_ASSOC)) {
-
-				$changes[$row['uri']] = $row['operation'];
-
-			}
-
-			foreach($changes as $uri => $operation) {
-
-				switch($operation) {
-					case 1 :
-						$result['added'][] = $uri;
-						break;
-					case 2 :
-						$result['modified'][] = $uri;
-						break;
-					case 3 :
-						$result['deleted'][] = $uri;
-						break;
-				}
-
-			}
-		} else {
-			// No synctoken supplied, this is the initial sync.
-			$query = "SELECT `uri` FROM `*PREFIX*calendarobjects` WHERE `calendarid` = ? AND `calendartype` = ?";
-			$stmt = $this->db->prepare($query);
-			$stmt->execute([$calendarId, $calendarType]);
-
-			$result['added'] = $stmt->fetchAll(\PDO::FETCH_COLUMN);
-		}
-		return $result;
-
-	}
-
-	/**
-	 * Returns a list of subscriptions for a principal.
-	 *
-	 * Every subscription is an array with the following keys:
-	 *  * id, a unique id that will be used by other functions to modify the
-	 *    subscription. This can be the same as the uri or a database key.
-	 *  * uri. This is just the 'base uri' or 'filename' of the subscription.
-	 *  * principaluri. The owner of the subscription. Almost always the same as
-	 *    principalUri passed to this method.
-	 *
-	 * Furthermore, all the subscription info must be returned too:
-	 *
-	 * 1. {DAV:}displayname
-	 * 2. {http://apple.com/ns/ical/}refreshrate
-	 * 3. {http://calendarserver.org/ns/}subscribed-strip-todos (omit if todos
-	 *    should not be stripped).
-	 * 4. {http://calendarserver.org/ns/}subscribed-strip-alarms (omit if alarms
-	 *    should not be stripped).
-	 * 5. {http://calendarserver.org/ns/}subscribed-strip-attachments (omit if
-	 *    attachments should not be stripped).
-	 * 6. {http://calendarserver.org/ns/}source (Must be a
-	 *     Sabre\DAV\Property\Href).
-	 * 7. {http://apple.com/ns/ical/}calendar-color
-	 * 8. {http://apple.com/ns/ical/}calendar-order
-	 * 9. {urn:ietf:params:xml:ns:caldav}supported-calendar-component-set
-	 *    (should just be an instance of
-	 *    Sabre\CalDAV\Property\SupportedCalendarComponentSet, with a bunch of
-	 *    default components).
-	 *
-	 * @param string $principalUri
-	 * @return array
-	 */
-	function getSubscriptionsForUser($principalUri) {
-		$fields = array_values($this->subscriptionPropertyMap);
-		$fields[] = 'id';
-		$fields[] = 'uri';
-		$fields[] = 'source';
-		$fields[] = 'principaluri';
-		$fields[] = 'lastmodified';
-		$fields[] = 'synctoken';
-
-		$query = $this->db->getQueryBuilder();
-		$query->select($fields)
-			->from('calendarsubscriptions')
-			->where($query->expr()->eq('principaluri', $query->createNamedParameter($principalUri)))
-			->orderBy('calendarorder', 'asc');
-		$stmt =$query->execute();
-
-		$subscriptions = [];
-		while($row = $stmt->fetch(\PDO::FETCH_ASSOC)) {
-
-			$subscription = [
-				'id'           => $row['id'],
-				'uri'          => $row['uri'],
-				'principaluri' => $row['principaluri'],
-				'source'       => $row['source'],
-				'lastmodified' => $row['lastmodified'],
-
-				'{' . Plugin::NS_CALDAV . '}supported-calendar-component-set' => new SupportedCalendarComponentSet(['VTODO', 'VEVENT']),
-				'{http://sabredav.org/ns}sync-token' => $row['synctoken']?$row['synctoken']:'0',
-			];
-
-			foreach($this->subscriptionPropertyMap as $xmlName=>$dbName) {
-				if (!is_null($row[$dbName])) {
-					$subscription[$xmlName] = $row[$dbName];
-				}
-			}
-
-			$subscriptions[] = $subscription;
-
-		}
-
-		return $subscriptions;
-	}
-
-	/**
-	 * Creates a new subscription for a principal.
-	 *
-	 * If the creation was a success, an id must be returned that can be used to reference
-	 * this subscription in other methods, such as updateSubscription.
-	 *
-	 * @param string $principalUri
-	 * @param string $uri
-	 * @param array $properties
-	 * @return mixed
-	 */
-	function createSubscription($principalUri, $uri, array $properties) {
-
-		if (!isset($properties['{http://calendarserver.org/ns/}source'])) {
-			throw new Forbidden('The {http://calendarserver.org/ns/}source property is required when creating subscriptions');
-		}
-
-		$values = [
-			'principaluri' => $principalUri,
-			'uri'          => $uri,
-			'source'       => $properties['{http://calendarserver.org/ns/}source']->getHref(),
-			'lastmodified' => time(),
-		];
-
-		$propertiesBoolean = ['striptodos', 'stripalarms', 'stripattachments'];
-
-		foreach($this->subscriptionPropertyMap as $xmlName=>$dbName) {
-			if (array_key_exists($xmlName, $properties)) {
-					$values[$dbName] = $properties[$xmlName];
-					if (in_array($dbName, $propertiesBoolean)) {
-						$values[$dbName] = true;
-				}
-			}
-		}
-
-		$valuesToInsert = [];
-
-		$query = $this->db->getQueryBuilder();
-
-		foreach (array_keys($values) as $name) {
-			$valuesToInsert[$name] = $query->createNamedParameter($values[$name]);
-		}
-
-		$query->insert('calendarsubscriptions')
-			->values($valuesToInsert)
-			->execute();
-
-		$subscriptionId = $this->db->lastInsertId('*PREFIX*calendarsubscriptions');
-
-		$this->dispatcher->dispatch('\OCA\DAV\CalDAV\CalDavBackend::createSubscription', new GenericEvent(
-			'\OCA\DAV\CalDAV\CalDavBackend::createSubscription',
-			[
-				'subscriptionId' => $subscriptionId,
-				'subscriptionData' => $this->getSubscriptionById($subscriptionId),
-			]));
-
-		return $subscriptionId;
-	}
-
-	/**
-	 * Updates a subscription
-	 *
-	 * The list of mutations is stored in a Sabre\DAV\PropPatch object.
-	 * To do the actual updates, you must tell this object which properties
-	 * you're going to process with the handle() method.
-	 *
-	 * Calling the handle method is like telling the PropPatch object "I
-	 * promise I can handle updating this property".
-	 *
-	 * Read the PropPatch documentation for more info and examples.
-	 *
-	 * @param mixed $subscriptionId
-	 * @param PropPatch $propPatch
-	 * @return void
-	 */
-	function updateSubscription($subscriptionId, PropPatch $propPatch) {
-		$supportedProperties = array_keys($this->subscriptionPropertyMap);
-		$supportedProperties[] = '{http://calendarserver.org/ns/}source';
-
-		/**
-		 * @suppress SqlInjectionChecker
-		 */
-		$propPatch->handle($supportedProperties, function($mutations) use ($subscriptionId) {
-
-			$newValues = [];
-
-			foreach($mutations as $propertyName=>$propertyValue) {
-				if ($propertyName === '{http://calendarserver.org/ns/}source') {
-					$newValues['source'] = $propertyValue->getHref();
-				} else {
-					$fieldName = $this->subscriptionPropertyMap[$propertyName];
-					$newValues[$fieldName] = $propertyValue;
-				}
-			}
-
-			$query = $this->db->getQueryBuilder();
-			$query->update('calendarsubscriptions')
-				->set('lastmodified', $query->createNamedParameter(time()));
-			foreach($newValues as $fieldName=>$value) {
-				$query->set($fieldName, $query->createNamedParameter($value));
-			}
-			$query->where($query->expr()->eq('id', $query->createNamedParameter($subscriptionId)))
-				->execute();
-
-			$this->dispatcher->dispatch('\OCA\DAV\CalDAV\CalDavBackend::updateSubscription', new GenericEvent(
-				'\OCA\DAV\CalDAV\CalDavBackend::updateSubscription',
-				[
-					'subscriptionId' => $subscriptionId,
-					'subscriptionData' => $this->getSubscriptionById($subscriptionId),
-					'propertyMutations' => $mutations,
-				]));
-
-			return true;
-
-		});
-	}
-
-	/**
-	 * Deletes a subscription.
-	 *
-	 * @param mixed $subscriptionId
-	 * @return void
-	 */
-	function deleteSubscription($subscriptionId) {
-		$this->dispatcher->dispatch('\OCA\DAV\CalDAV\CalDavBackend::deleteSubscription', new GenericEvent(
-			'\OCA\DAV\CalDAV\CalDavBackend::deleteSubscription',
-			[
-				'subscriptionId' => $subscriptionId,
-				'subscriptionData' => $this->getSubscriptionById($subscriptionId),
-			]));
-
-		$query = $this->db->getQueryBuilder();
-		$query->delete('calendarsubscriptions')
-			->where($query->expr()->eq('id', $query->createNamedParameter($subscriptionId)))
-			->execute();
-
-		$query = $this->db->getQueryBuilder();
-		$query->delete('calendarobjects')
-			->where($query->expr()->eq('calendarid', $query->createNamedParameter($subscriptionId)))
-			->andWhere($query->expr()->eq('calendartype', $query->createNamedParameter(self::CALENDAR_TYPE_SUBSCRIPTION)))
-			->execute();
-
-		$query->delete('calendarchanges')
-			->where($query->expr()->eq('calendarid', $query->createNamedParameter($subscriptionId)))
-			->andWhere($query->expr()->eq('calendartype', $query->createNamedParameter(self::CALENDAR_TYPE_SUBSCRIPTION)))
-			->execute();
-
-		$query->delete($this->dbObjectPropertiesTable)
-			->where($query->expr()->eq('calendarid', $query->createNamedParameter($subscriptionId)))
-			->andWhere($query->expr()->eq('calendartype', $query->createNamedParameter(self::CALENDAR_TYPE_SUBSCRIPTION)))
-			->execute();
-	}
-
-	/**
-	 * Returns a single scheduling object for the inbox collection.
-	 *
-	 * The returned array should contain the following elements:
-	 *   * uri - A unique basename for the object. This will be used to
-	 *           construct a full uri.
-	 *   * calendardata - The iCalendar object
-	 *   * lastmodified - The last modification date. Can be an int for a unix
-	 *                    timestamp, or a PHP DateTime object.
-	 *   * etag - A unique token that must change if the object changed.
-	 *   * size - The size of the object, in bytes.
-	 *
-	 * @param string $principalUri
-	 * @param string $objectUri
-	 * @return array
-	 */
-	function getSchedulingObject($principalUri, $objectUri) {
-		$query = $this->db->getQueryBuilder();
-		$stmt = $query->select(['uri', 'calendardata', 'lastmodified', 'etag', 'size'])
-			->from('schedulingobjects')
-			->where($query->expr()->eq('principaluri', $query->createNamedParameter($principalUri)))
-			->andWhere($query->expr()->eq('uri', $query->createNamedParameter($objectUri)))
-			->execute();
-
-		$row = $stmt->fetch(\PDO::FETCH_ASSOC);
-
-		if(!$row) {
-			return null;
-		}
-
-		return [
-				'uri'          => $row['uri'],
-				'calendardata' => $row['calendardata'],
-				'lastmodified' => $row['lastmodified'],
-				'etag'         => '"' . $row['etag'] . '"',
-				'size'         => (int)$row['size'],
-		];
-	}
-
-	/**
-	 * Returns all scheduling objects for the inbox collection.
-	 *
-	 * These objects should be returned as an array. Every item in the array
-	 * should follow the same structure as returned from getSchedulingObject.
-	 *
-	 * The main difference is that 'calendardata' is optional.
-	 *
-	 * @param string $principalUri
-	 * @return array
-	 */
-	function getSchedulingObjects($principalUri) {
-		$query = $this->db->getQueryBuilder();
-		$stmt = $query->select(['uri', 'calendardata', 'lastmodified', 'etag', 'size'])
-				->from('schedulingobjects')
-				->where($query->expr()->eq('principaluri', $query->createNamedParameter($principalUri)))
-				->execute();
-
-		$result = [];
-		foreach($stmt->fetchAll(\PDO::FETCH_ASSOC) as $row) {
-			$result[] = [
-					'calendardata' => $row['calendardata'],
-					'uri'          => $row['uri'],
-					'lastmodified' => $row['lastmodified'],
-					'etag'         => '"' . $row['etag'] . '"',
-					'size'         => (int)$row['size'],
-			];
-		}
-
-		return $result;
-	}
-
-	/**
-	 * Deletes a scheduling object from the inbox collection.
-	 *
-	 * @param string $principalUri
-	 * @param string $objectUri
-	 * @return void
-	 */
-	function deleteSchedulingObject($principalUri, $objectUri) {
-		$query = $this->db->getQueryBuilder();
-		$query->delete('schedulingobjects')
-				->where($query->expr()->eq('principaluri', $query->createNamedParameter($principalUri)))
-				->andWhere($query->expr()->eq('uri', $query->createNamedParameter($objectUri)))
-				->execute();
-	}
-
-	/**
-	 * Creates a new scheduling object. This should land in a users' inbox.
-	 *
-	 * @param string $principalUri
-	 * @param string $objectUri
-	 * @param string $objectData
-	 * @return void
-	 */
-	function createSchedulingObject($principalUri, $objectUri, $objectData) {
-		$query = $this->db->getQueryBuilder();
-		$query->insert('schedulingobjects')
-			->values([
-				'principaluri' => $query->createNamedParameter($principalUri),
-				'calendardata' => $query->createNamedParameter($objectData, IQueryBuilder::PARAM_LOB),
-				'uri' => $query->createNamedParameter($objectUri),
-				'lastmodified' => $query->createNamedParameter(time()),
-				'etag' => $query->createNamedParameter(md5($objectData)),
-				'size' => $query->createNamedParameter(strlen($objectData))
-			])
-			->execute();
-	}
-
-	/**
-	 * Adds a change record to the calendarchanges table.
-	 *
-	 * @param mixed $calendarId
-	 * @param string $objectUri
-	 * @param int $operation 1 = add, 2 = modify, 3 = delete.
-	 * @param int $calendarType
-	 * @return void
-	 */
-	protected function addChange($calendarId, $objectUri, $operation, $calendarType=self::CALENDAR_TYPE_CALENDAR) {
-		$table = $calendarType === self::CALENDAR_TYPE_CALENDAR ? 'calendars': 'calendarsubscriptions';
-
-		$query = $this->db->getQueryBuilder();
-		$query->select('synctoken')
-			->from($table)
-			->where($query->expr()->eq('id', $query->createNamedParameter($calendarId)));
-		$syncToken = (int)$query->execute()->fetchColumn();
-
-		$query = $this->db->getQueryBuilder();
-		$query->insert('calendarchanges')
-			->values([
-				'uri' => $query->createNamedParameter($objectUri),
-				'synctoken' => $query->createNamedParameter($syncToken),
-				'calendarid' => $query->createNamedParameter($calendarId),
-				'operation' => $query->createNamedParameter($operation),
-				'calendartype' => $query->createNamedParameter($calendarType),
-			])
-			->execute();
-
-		$stmt = $this->db->prepare("UPDATE `*PREFIX*$table` SET `synctoken` = `synctoken` + 1 WHERE `id` = ?");
-		$stmt->execute([
-			$calendarId
-		]);
-
-	}
-
-	/**
-	 * Parses some information from calendar objects, used for optimized
-	 * calendar-queries.
-	 *
-	 * Returns an array with the following keys:
-	 *   * etag - An md5 checksum of the object without the quotes.
-	 *   * size - Size of the object in bytes
-	 *   * componentType - VEVENT, VTODO or VJOURNAL
-	 *   * firstOccurence
-	 *   * lastOccurence
-	 *   * uid - value of the UID property
-	 *
-	 * @param string $calendarData
-	 * @return array
-	 */
-	public function getDenormalizedData($calendarData) {
-
-		$vObject = Reader::read($calendarData);
-		$componentType = null;
-		$component = null;
-		$firstOccurrence = null;
-		$lastOccurrence = null;
-		$uid = null;
-		$classification = self::CLASSIFICATION_PUBLIC;
-		foreach($vObject->getComponents() as $component) {
-			if ($component->name!=='VTIMEZONE') {
-				$componentType = $component->name;
-				$uid = (string)$component->UID;
-				break;
-			}
-		}
-		if (!$componentType) {
-			throw new \Sabre\DAV\Exception\BadRequest('Calendar objects must have a VJOURNAL, VEVENT or VTODO component');
-		}
-		if ($componentType === 'VEVENT' && $component->DTSTART) {
-			$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();
-					$endDate->add(DateTimeParser::parse($component->DURATION->getValue()));
-					$lastOccurrence = $endDate->getTimeStamp();
-				} elseif (!$component->DTSTART->hasTime()) {
-					$endDate = clone $component->DTSTART->getDateTime();
-					$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 = $end->getTimestamp();
-				}
-
-			}
-		}
-
-		if ($component->CLASS) {
-			$classification = CalDavBackend::CLASSIFICATION_PRIVATE;
-			switch ($component->CLASS->getValue()) {
-				case 'PUBLIC':
-					$classification = CalDavBackend::CLASSIFICATION_PUBLIC;
-					break;
-				case 'CONFIDENTIAL':
-					$classification = CalDavBackend::CLASSIFICATION_CONFIDENTIAL;
-					break;
-			}
-		}
-		return [
-			'etag' => md5($calendarData),
-			'size' => strlen($calendarData),
-			'componentType' => $componentType,
-			'firstOccurence' => is_null($firstOccurrence) ? null : max(0, $firstOccurrence),
-			'lastOccurence'  => $lastOccurrence,
-			'uid' => $uid,
-			'classification' => $classification
-		];
-
-	}
-
-	/**
-	 * @param $cardData
-	 * @return bool|string
-	 */
-	private function readBlob($cardData) {
-		if (is_resource($cardData)) {
-			return stream_get_contents($cardData);
-		}
-
-		return $cardData;
-	}
-
-	/**
-	 * @param IShareable $shareable
-	 * @param array $add
-	 * @param array $remove
-	 */
-	public function updateShares($shareable, $add, $remove) {
-		$calendarId = $shareable->getResourceId();
-		$this->dispatcher->dispatch('\OCA\DAV\CalDAV\CalDavBackend::updateShares', new GenericEvent(
-			'\OCA\DAV\CalDAV\CalDavBackend::updateShares',
-			[
-				'calendarId' => $calendarId,
-				'calendarData' => $this->getCalendarById($calendarId),
-				'shares' => $this->getShares($calendarId),
-				'add' => $add,
-				'remove' => $remove,
-			]));
-		$this->calendarSharingBackend->updateShares($shareable, $add, $remove);
-	}
-
-	/**
-	 * @param int $resourceId
-	 * @param int $calendarType
-	 * @return array
-	 */
-	public function getShares($resourceId, $calendarType=self::CALENDAR_TYPE_CALENDAR) {
-		return $this->calendarSharingBackend->getShares($resourceId);
-	}
-
-	/**
-	 * @param boolean $value
-	 * @param \OCA\DAV\CalDAV\Calendar $calendar
-	 * @return string|null
-	 */
-	public function setPublishStatus($value, $calendar) {
-
-		$calendarId = $calendar->getResourceId();
-		$this->dispatcher->dispatch('\OCA\DAV\CalDAV\CalDavBackend::publishCalendar', new GenericEvent(
-			'\OCA\DAV\CalDAV\CalDavBackend::updateShares',
-			[
-				'calendarId' => $calendarId,
-				'calendarData' => $this->getCalendarById($calendarId),
-				'public' => $value,
-			]));
-
-		$query = $this->db->getQueryBuilder();
-		if ($value) {
-			$publicUri = $this->random->generate(16, ISecureRandom::CHAR_HUMAN_READABLE);
-			$query->insert('dav_shares')
-				->values([
-					'principaluri' => $query->createNamedParameter($calendar->getPrincipalURI()),
-					'type' => $query->createNamedParameter('calendar'),
-					'access' => $query->createNamedParameter(self::ACCESS_PUBLIC),
-					'resourceid' => $query->createNamedParameter($calendar->getResourceId()),
-					'publicuri' => $query->createNamedParameter($publicUri)
-				]);
-			$query->execute();
-			return $publicUri;
-		}
-		$query->delete('dav_shares')
-			->where($query->expr()->eq('resourceid', $query->createNamedParameter($calendar->getResourceId())))
-			->andWhere($query->expr()->eq('access', $query->createNamedParameter(self::ACCESS_PUBLIC)));
-		$query->execute();
-		return null;
-	}
-
-	/**
-	 * @param \OCA\DAV\CalDAV\Calendar $calendar
-	 * @return mixed
-	 */
-	public function getPublishStatus($calendar) {
-		$query = $this->db->getQueryBuilder();
-		$result = $query->select('publicuri')
-			->from('dav_shares')
-			->where($query->expr()->eq('resourceid', $query->createNamedParameter($calendar->getResourceId())))
-			->andWhere($query->expr()->eq('access', $query->createNamedParameter(self::ACCESS_PUBLIC)))
-			->execute();
-
-		$row = $result->fetch();
-		$result->closeCursor();
-		return $row ? reset($row) : false;
-	}
-
-	/**
-	 * @param int $resourceId
-	 * @param array $acl
-	 * @return array
-	 */
-	public function applyShareAcl($resourceId, $acl) {
-		return $this->calendarSharingBackend->applyShareAcl($resourceId, $acl);
-	}
-
-
-
-	/**
-	 * update properties table
-	 *
-	 * @param int $calendarId
-	 * @param string $objectUri
-	 * @param string $calendarData
-	 * @param int $calendarType
-	 */
-	public function updateProperties($calendarId, $objectUri, $calendarData, $calendarType=self::CALENDAR_TYPE_CALENDAR) {
-		$objectId = $this->getCalendarObjectId($calendarId, $objectUri, $calendarType);
-
-		try {
-			$vCalendar = $this->readCalendarData($calendarData);
-		} catch (\Exception $ex) {
-			return;
-		}
-
-		$this->purgeProperties($calendarId, $objectId);
-
-		$query = $this->db->getQueryBuilder();
-		$query->insert($this->dbObjectPropertiesTable)
-			->values(
-				[
-					'calendarid' => $query->createNamedParameter($calendarId),
-					'calendartype' => $query->createNamedParameter($calendarType),
-					'objectid' => $query->createNamedParameter($objectId),
-					'name' => $query->createParameter('name'),
-					'parameter' => $query->createParameter('parameter'),
-					'value' => $query->createParameter('value'),
-				]
-			);
-
-		$indexComponents = ['VEVENT', 'VJOURNAL', 'VTODO'];
-		foreach ($vCalendar->getComponents() as $component) {
-			if (!in_array($component->name, $indexComponents)) {
-				continue;
-			}
-
-			foreach ($component->children() as $property) {
-				if (in_array($property->name, self::$indexProperties)) {
-					$value = $property->getValue();
-					// is this a shitty db?
-					if (!$this->db->supports4ByteText()) {
-						$value = preg_replace('/[\x{10000}-\x{10FFFF}]/u', "\xEF\xBF\xBD", $value);
-					}
-					$value = mb_substr($value, 0, 254);
-
-					$query->setParameter('name', $property->name);
-					$query->setParameter('parameter', null);
-					$query->setParameter('value', $value);
-					$query->execute();
-				}
-
-				if (array_key_exists($property->name, self::$indexParameters)) {
-					$parameters = $property->parameters();
-					$indexedParametersForProperty = self::$indexParameters[$property->name];
-
-					foreach ($parameters as $key => $value) {
-						if (in_array($key, $indexedParametersForProperty)) {
-							// is this a shitty db?
-							if ($this->db->supports4ByteText()) {
-								$value = preg_replace('/[\x{10000}-\x{10FFFF}]/u', "\xEF\xBF\xBD", $value);
-							}
-
-							$query->setParameter('name', $property->name);
-							$query->setParameter('parameter', mb_substr($key, 0, 254));
-							$query->setParameter('value', mb_substr($value, 0, 254));
-							$query->execute();
-						}
-					}
-				}
-			}
-		}
-	}
-
-	/**
-	 * deletes all birthday calendars
-	 */
-	public function deleteAllBirthdayCalendars() {
-		$query = $this->db->getQueryBuilder();
-		$result = $query->select(['id'])->from('calendars')
-			->where($query->expr()->eq('uri', $query->createNamedParameter(BirthdayService::BIRTHDAY_CALENDAR_URI)))
-			->execute();
-
-		$ids = $result->fetchAll();
-		foreach($ids as $id) {
-			$this->deleteCalendar($id['id']);
-		}
-	}
-
-	/**
-	 * @param $subscriptionId
-	 */
-	public function purgeAllCachedEventsForSubscription($subscriptionId) {
-		$query = $this->db->getQueryBuilder();
-		$query->select('uri')
-			->from('calendarobjects')
-			->where($query->expr()->eq('calendarid', $query->createNamedParameter($subscriptionId)))
-			->andWhere($query->expr()->eq('calendartype', $query->createNamedParameter(self::CALENDAR_TYPE_SUBSCRIPTION)));
-		$stmt = $query->execute();
-
-		$uris = [];
-		foreach($stmt->fetchAll(\PDO::FETCH_ASSOC) as $row) {
-			$uris[] = $row['uri'];
-		}
-		$stmt->closeCursor();
-
-		$query = $this->db->getQueryBuilder();
-		$query->delete('calendarobjects')
-			->where($query->expr()->eq('calendarid', $query->createNamedParameter($subscriptionId)))
-			->andWhere($query->expr()->eq('calendartype', $query->createNamedParameter(self::CALENDAR_TYPE_SUBSCRIPTION)))
-			->execute();
-
-		$query->delete('calendarchanges')
-			->where($query->expr()->eq('calendarid', $query->createNamedParameter($subscriptionId)))
-			->andWhere($query->expr()->eq('calendartype', $query->createNamedParameter(self::CALENDAR_TYPE_SUBSCRIPTION)))
-			->execute();
-
-		$query->delete($this->dbObjectPropertiesTable)
-			->where($query->expr()->eq('calendarid', $query->createNamedParameter($subscriptionId)))
-			->andWhere($query->expr()->eq('calendartype', $query->createNamedParameter(self::CALENDAR_TYPE_SUBSCRIPTION)))
-			->execute();
-
-		foreach($uris as $uri) {
-			$this->addChange($subscriptionId, $uri, 3, self::CALENDAR_TYPE_SUBSCRIPTION);
-		}
-	}
-
-	/**
-	 * Move a calendar from one user to another
-	 *
-	 * @param string $uriName
-	 * @param string $uriOrigin
-	 * @param string $uriDestination
-	 */
-	public function moveCalendar($uriName, $uriOrigin, $uriDestination)
-	{
-		$query = $this->db->getQueryBuilder();
-		$query->update('calendars')
-			->set('principaluri', $query->createNamedParameter($uriDestination))
-			->where($query->expr()->eq('principaluri', $query->createNamedParameter($uriOrigin)))
-			->andWhere($query->expr()->eq('uri', $query->createNamedParameter($uriName)))
-			->execute();
-	}
-
-	/**
-	 * read VCalendar data into a VCalendar object
-	 *
-	 * @param string $objectData
-	 * @return VCalendar
-	 */
-	protected function readCalendarData($objectData) {
-		return Reader::read($objectData);
-	}
-
-	/**
-	 * delete all properties from a given calendar object
-	 *
-	 * @param int $calendarId
-	 * @param int $objectId
-	 */
-	protected function purgeProperties($calendarId, $objectId) {
-		$query = $this->db->getQueryBuilder();
-		$query->delete($this->dbObjectPropertiesTable)
-			->where($query->expr()->eq('objectid', $query->createNamedParameter($objectId)))
-			->andWhere($query->expr()->eq('calendarid', $query->createNamedParameter($calendarId)));
-		$query->execute();
-	}
-
-	/**
-	 * get ID from a given calendar object
-	 *
-	 * @param int $calendarId
-	 * @param string $uri
-	 * @param int $calendarType
-	 * @return int
-	 */
-	protected function getCalendarObjectId($calendarId, $uri, $calendarType):int {
-		$query = $this->db->getQueryBuilder();
-		$query->select('id')
-			->from('calendarobjects')
-			->where($query->expr()->eq('uri', $query->createNamedParameter($uri)))
-			->andWhere($query->expr()->eq('calendarid', $query->createNamedParameter($calendarId)))
-			->andWhere($query->expr()->eq('calendartype', $query->createNamedParameter($calendarType)));
-
-		$result = $query->execute();
-		$objectIds = $result->fetch();
-		$result->closeCursor();
-
-		if (!isset($objectIds['id'])) {
-			throw new \InvalidArgumentException('Calendarobject does not exists: ' . $uri);
-		}
-
-		return (int)$objectIds['id'];
-	}
-
-	/**
-	 * return legacy endpoint principal name to new principal name
-	 *
-	 * @param $principalUri
-	 * @param $toV2
-	 * @return string
-	 */
-	private function convertPrincipal($principalUri, $toV2) {
-		if ($this->principalBackend->getPrincipalPrefix() === 'principals') {
-			list(, $name) = Uri\split($principalUri);
-			if ($toV2 === true) {
-				return "principals/users/$name";
-			}
-			return "principals/$name";
-		}
-		return $principalUri;
-	}
-
-	/**
-	 * adds information about an owner to the calendar data
-	 *
-	 * @param $calendarInfo
-	 */
-	private function addOwnerPrincipal(&$calendarInfo) {
-		$ownerPrincipalKey = '{' . \OCA\DAV\DAV\Sharing\Plugin::NS_OWNCLOUD . '}owner-principal';
-		$displaynameKey = '{' . \OCA\DAV\DAV\Sharing\Plugin::NS_NEXTCLOUD . '}owner-displayname';
-		if (isset($calendarInfo[$ownerPrincipalKey])) {
-			$uri = $calendarInfo[$ownerPrincipalKey];
-		} else {
-			$uri = $calendarInfo['principaluri'];
-		}
-
-		$principalInformation = $this->principalBackend->getPrincipalByPath($uri);
-		if (isset($principalInformation['{DAV:}displayname'])) {
-			$calendarInfo[$displaynameKey] = $principalInformation['{DAV:}displayname'];
-		}
-	}
+    const CALENDAR_TYPE_CALENDAR = 0;
+    const CALENDAR_TYPE_SUBSCRIPTION = 1;
+
+    const PERSONAL_CALENDAR_URI = 'personal';
+    const PERSONAL_CALENDAR_NAME = 'Personal';
+
+    const RESOURCE_BOOKING_CALENDAR_URI = 'calendar';
+    const RESOURCE_BOOKING_CALENDAR_NAME = 'Calendar';
+
+    /**
+     * We need to specify a max date, because we need to stop *somewhere*
+     *
+     * On 32 bit system the maximum for a signed integer is 2147483647, so
+     * MAX_DATE cannot be higher than date('Y-m-d', 2147483647) which results
+     * in 2038-01-19 to avoid problems when the date is converted
+     * to a unix timestamp.
+     */
+    const MAX_DATE = '2038-01-01';
+
+    const ACCESS_PUBLIC = 4;
+    const CLASSIFICATION_PUBLIC = 0;
+    const CLASSIFICATION_PRIVATE = 1;
+    const CLASSIFICATION_CONFIDENTIAL = 2;
+
+    /**
+     * List of CalDAV properties, and how they map to database field names
+     * Add your own properties by simply adding on to this array.
+     *
+     * Note that only string-based properties are supported here.
+     *
+     * @var array
+     */
+    public $propertyMap = [
+        '{DAV:}displayname'                          => 'displayname',
+        '{urn:ietf:params:xml:ns:caldav}calendar-description' => 'description',
+        '{urn:ietf:params:xml:ns:caldav}calendar-timezone'    => 'timezone',
+        '{http://apple.com/ns/ical/}calendar-order'  => 'calendarorder',
+        '{http://apple.com/ns/ical/}calendar-color'  => 'calendarcolor',
+    ];
+
+    /**
+     * List of subscription properties, and how they map to database field names.
+     *
+     * @var array
+     */
+    public $subscriptionPropertyMap = [
+        '{DAV:}displayname'                                           => 'displayname',
+        '{http://apple.com/ns/ical/}refreshrate'                      => 'refreshrate',
+        '{http://apple.com/ns/ical/}calendar-order'                   => 'calendarorder',
+        '{http://apple.com/ns/ical/}calendar-color'                   => 'calendarcolor',
+        '{http://calendarserver.org/ns/}subscribed-strip-todos'       => 'striptodos',
+        '{http://calendarserver.org/ns/}subscribed-strip-alarms'      => 'stripalarms',
+        '{http://calendarserver.org/ns/}subscribed-strip-attachments' => 'stripattachments',
+    ];
+
+    /** @var array properties to index */
+    public static $indexProperties = ['CATEGORIES', 'COMMENT', 'DESCRIPTION',
+        'LOCATION', 'RESOURCES', 'STATUS', 'SUMMARY', 'ATTENDEE', 'CONTACT',
+        'ORGANIZER'];
+
+    /** @var array parameters to index */
+    public static $indexParameters = [
+        'ATTENDEE' => ['CN'],
+        'ORGANIZER' => ['CN'],
+    ];
+
+    /**
+     * @var string[] Map of uid => display name
+     */
+    protected $userDisplayNames;
+
+    /** @var IDBConnection */
+    private $db;
+
+    /** @var Backend */
+    private $calendarSharingBackend;
+
+    /** @var Principal */
+    private $principalBackend;
+
+    /** @var IUserManager */
+    private $userManager;
+
+    /** @var ISecureRandom */
+    private $random;
+
+    /** @var ILogger */
+    private $logger;
+
+    /** @var EventDispatcherInterface */
+    private $dispatcher;
+
+    /** @var bool */
+    private $legacyEndpoint;
+
+    /** @var string */
+    private $dbObjectPropertiesTable = 'calendarobjects_props';
+
+    /**
+     * CalDavBackend constructor.
+     *
+     * @param IDBConnection $db
+     * @param Principal $principalBackend
+     * @param IUserManager $userManager
+     * @param IGroupManager $groupManager
+     * @param ISecureRandom $random
+     * @param ILogger $logger
+     * @param EventDispatcherInterface $dispatcher
+     * @param bool $legacyEndpoint
+     */
+    public function __construct(IDBConnection $db,
+                                Principal $principalBackend,
+                                IUserManager $userManager,
+                                IGroupManager $groupManager,
+                                ISecureRandom $random,
+                                ILogger $logger,
+                                EventDispatcherInterface $dispatcher,
+                                bool $legacyEndpoint = false) {
+        $this->db = $db;
+        $this->principalBackend = $principalBackend;
+        $this->userManager = $userManager;
+        $this->calendarSharingBackend = new Backend($this->db, $this->userManager, $groupManager, $principalBackend, 'calendar');
+        $this->random = $random;
+        $this->logger = $logger;
+        $this->dispatcher = $dispatcher;
+        $this->legacyEndpoint = $legacyEndpoint;
+    }
+
+    /**
+     * Return the number of calendars for a principal
+     *
+     * By default this excludes the automatically generated birthday calendar
+     *
+     * @param $principalUri
+     * @param bool $excludeBirthday
+     * @return int
+     */
+    public function getCalendarsForUserCount($principalUri, $excludeBirthday = true) {
+        $principalUri = $this->convertPrincipal($principalUri, true);
+        $query = $this->db->getQueryBuilder();
+        $query->select($query->func()->count('*'))
+            ->from('calendars')
+            ->where($query->expr()->eq('principaluri', $query->createNamedParameter($principalUri)));
+
+        if ($excludeBirthday) {
+            $query->andWhere($query->expr()->neq('uri', $query->createNamedParameter(BirthdayService::BIRTHDAY_CALENDAR_URI)));
+        }
+
+        return (int)$query->execute()->fetchColumn();
+    }
+
+    /**
+     * Returns a list of calendars for a principal.
+     *
+     * Every project is an array with the following keys:
+     *  * id, a unique id that will be used by other functions to modify the
+     *    calendar. This can be the same as the uri or a database key.
+     *  * uri, which the basename of the uri with which the calendar is
+     *    accessed.
+     *  * principaluri. The owner of the calendar. Almost always the same as
+     *    principalUri passed to this method.
+     *
+     * Furthermore it can contain webdav properties in clark notation. A very
+     * common one is '{DAV:}displayname'.
+     *
+     * Many clients also require:
+     * {urn:ietf:params:xml:ns:caldav}supported-calendar-component-set
+     * For this property, you can just return an instance of
+     * Sabre\CalDAV\Property\SupportedCalendarComponentSet.
+     *
+     * If you return {http://sabredav.org/ns}read-only and set the value to 1,
+     * ACL will automatically be put in read-only mode.
+     *
+     * @param string $principalUri
+     * @return array
+     */
+    function getCalendarsForUser($principalUri) {
+        $principalUriOriginal = $principalUri;
+        $principalUri = $this->convertPrincipal($principalUri, true);
+        $fields = array_values($this->propertyMap);
+        $fields[] = 'id';
+        $fields[] = 'uri';
+        $fields[] = 'synctoken';
+        $fields[] = 'components';
+        $fields[] = 'principaluri';
+        $fields[] = 'transparent';
+
+        // Making fields a comma-delimited list
+        $query = $this->db->getQueryBuilder();
+        $query->select($fields)->from('calendars')
+                ->where($query->expr()->eq('principaluri', $query->createNamedParameter($principalUri)))
+                ->orderBy('calendarorder', 'ASC');
+        $stmt = $query->execute();
+
+        $calendars = [];
+        while($row = $stmt->fetch(\PDO::FETCH_ASSOC)) {
+
+            $components = [];
+            if ($row['components']) {
+                $components = explode(',',$row['components']);
+            }
+
+            $calendar = [
+                'id' => $row['id'],
+                'uri' => $row['uri'],
+                'principaluri' => $this->convertPrincipal($row['principaluri'], !$this->legacyEndpoint),
+                '{' . Plugin::NS_CALENDARSERVER . '}getctag' => 'http://sabre.io/ns/sync/' . ($row['synctoken']?$row['synctoken']:'0'),
+                '{http://sabredav.org/ns}sync-token' => $row['synctoken']?$row['synctoken']:'0',
+                '{' . Plugin::NS_CALDAV . '}supported-calendar-component-set' => new SupportedCalendarComponentSet($components),
+                '{' . Plugin::NS_CALDAV . '}schedule-calendar-transp' => new ScheduleCalendarTransp($row['transparent']?'transparent':'opaque'),
+                '{' . \OCA\DAV\DAV\Sharing\Plugin::NS_OWNCLOUD . '}owner-principal' => $this->convertPrincipal($principalUri, !$this->legacyEndpoint),
+            ];
+
+            foreach($this->propertyMap as $xmlName=>$dbName) {
+                $calendar[$xmlName] = $row[$dbName];
+            }
+
+            $this->addOwnerPrincipal($calendar);
+
+            if (!isset($calendars[$calendar['id']])) {
+                $calendars[$calendar['id']] = $calendar;
+            }
+        }
+
+        $stmt->closeCursor();
+
+        // query for shared calendars
+        $principals = $this->principalBackend->getGroupMembership($principalUriOriginal, true);
+        $principals = array_merge($principals, $this->principalBackend->getCircleMembership($principalUriOriginal));
+
+        $principals = array_map(function($principal) {
+            return urldecode($principal);
+        }, $principals);
+        $principals[]= $principalUri;
+
+        $fields = array_values($this->propertyMap);
+        $fields[] = 'a.id';
+        $fields[] = 'a.uri';
+        $fields[] = 'a.synctoken';
+        $fields[] = 'a.components';
+        $fields[] = 'a.principaluri';
+        $fields[] = 'a.transparent';
+        $fields[] = 's.access';
+        $query = $this->db->getQueryBuilder();
+        $result = $query->select($fields)
+            ->from('dav_shares', 's')
+            ->join('s', 'calendars', 'a', $query->expr()->eq('s.resourceid', 'a.id'))
+            ->where($query->expr()->in('s.principaluri', $query->createParameter('principaluri')))
+            ->andWhere($query->expr()->eq('s.type', $query->createParameter('type')))
+            ->setParameter('type', 'calendar')
+            ->setParameter('principaluri', $principals, \Doctrine\DBAL\Connection::PARAM_STR_ARRAY)
+            ->execute();
+
+        $readOnlyPropertyName = '{' . \OCA\DAV\DAV\Sharing\Plugin::NS_OWNCLOUD . '}read-only';
+        while($row = $result->fetch()) {
+            if ($row['principaluri'] === $principalUri) {
+                continue;
+            }
+
+            $readOnly = (int) $row['access'] === Backend::ACCESS_READ;
+            if (isset($calendars[$row['id']])) {
+                if ($readOnly) {
+                    // New share can not have more permissions then the old one.
+                    continue;
+                }
+                if (isset($calendars[$row['id']][$readOnlyPropertyName]) &&
+                    $calendars[$row['id']][$readOnlyPropertyName] === 0) {
+                    // Old share is already read-write, no more permissions can be gained
+                    continue;
+                }
+            }
+
+            list(, $name) = Uri\split($row['principaluri']);
+            $uri = $row['uri'] . '_shared_by_' . $name;
+            $row['displayname'] = $row['displayname'] . ' (' . $this->getUserDisplayName($name) . ')';
+            $components = [];
+            if ($row['components']) {
+                $components = explode(',',$row['components']);
+            }
+            $calendar = [
+                'id' => $row['id'],
+                'uri' => $uri,
+                'principaluri' => $this->convertPrincipal($principalUri, !$this->legacyEndpoint),
+                '{' . Plugin::NS_CALENDARSERVER . '}getctag' => 'http://sabre.io/ns/sync/' . ($row['synctoken']?$row['synctoken']:'0'),
+                '{http://sabredav.org/ns}sync-token' => $row['synctoken']?$row['synctoken']:'0',
+                '{' . Plugin::NS_CALDAV . '}supported-calendar-component-set' => new SupportedCalendarComponentSet($components),
+                '{' . Plugin::NS_CALDAV . '}schedule-calendar-transp' => new ScheduleCalendarTransp('transparent'),
+                '{' . \OCA\DAV\DAV\Sharing\Plugin::NS_OWNCLOUD . '}owner-principal' => $this->convertPrincipal($row['principaluri'], !$this->legacyEndpoint),
+                $readOnlyPropertyName => $readOnly,
+            ];
+
+            foreach($this->propertyMap as $xmlName=>$dbName) {
+                $calendar[$xmlName] = $row[$dbName];
+            }
+
+            $this->addOwnerPrincipal($calendar);
+
+            $calendars[$calendar['id']] = $calendar;
+        }
+        $result->closeCursor();
+
+        return array_values($calendars);
+    }
+
+    /**
+     * @param $principalUri
+     * @return array
+     */
+    public function getUsersOwnCalendars($principalUri) {
+        $principalUri = $this->convertPrincipal($principalUri, true);
+        $fields = array_values($this->propertyMap);
+        $fields[] = 'id';
+        $fields[] = 'uri';
+        $fields[] = 'synctoken';
+        $fields[] = 'components';
+        $fields[] = 'principaluri';
+        $fields[] = 'transparent';
+        // Making fields a comma-delimited list
+        $query = $this->db->getQueryBuilder();
+        $query->select($fields)->from('calendars')
+            ->where($query->expr()->eq('principaluri', $query->createNamedParameter($principalUri)))
+            ->orderBy('calendarorder', 'ASC');
+        $stmt = $query->execute();
+        $calendars = [];
+        while($row = $stmt->fetch(\PDO::FETCH_ASSOC)) {
+            $components = [];
+            if ($row['components']) {
+                $components = explode(',',$row['components']);
+            }
+            $calendar = [
+                'id' => $row['id'],
+                'uri' => $row['uri'],
+                'principaluri' => $this->convertPrincipal($row['principaluri'], !$this->legacyEndpoint),
+                '{' . Plugin::NS_CALENDARSERVER . '}getctag' => 'http://sabre.io/ns/sync/' . ($row['synctoken']?$row['synctoken']:'0'),
+                '{http://sabredav.org/ns}sync-token' => $row['synctoken']?$row['synctoken']:'0',
+                '{' . Plugin::NS_CALDAV . '}supported-calendar-component-set' => new SupportedCalendarComponentSet($components),
+                '{' . Plugin::NS_CALDAV . '}schedule-calendar-transp' => new ScheduleCalendarTransp($row['transparent']?'transparent':'opaque'),
+            ];
+            foreach($this->propertyMap as $xmlName=>$dbName) {
+                $calendar[$xmlName] = $row[$dbName];
+            }
+
+            $this->addOwnerPrincipal($calendar);
+
+            if (!isset($calendars[$calendar['id']])) {
+                $calendars[$calendar['id']] = $calendar;
+            }
+        }
+        $stmt->closeCursor();
+        return array_values($calendars);
+    }
+
+
+    /**
+     * @param $uid
+     * @return string
+     */
+    private function getUserDisplayName($uid) {
+        if (!isset($this->userDisplayNames[$uid])) {
+            $user = $this->userManager->get($uid);
+
+            if ($user instanceof IUser) {
+                $this->userDisplayNames[$uid] = $user->getDisplayName();
+            } else {
+                $this->userDisplayNames[$uid] = $uid;
+            }
+        }
+
+        return $this->userDisplayNames[$uid];
+    }
+
+    /**
+     * @return array
+     */
+    public function getPublicCalendars() {
+        $fields = array_values($this->propertyMap);
+        $fields[] = 'a.id';
+        $fields[] = 'a.uri';
+        $fields[] = 'a.synctoken';
+        $fields[] = 'a.components';
+        $fields[] = 'a.principaluri';
+        $fields[] = 'a.transparent';
+        $fields[] = 's.access';
+        $fields[] = 's.publicuri';
+        $calendars = [];
+        $query = $this->db->getQueryBuilder();
+        $result = $query->select($fields)
+            ->from('dav_shares', 's')
+            ->join('s', 'calendars', 'a', $query->expr()->eq('s.resourceid', 'a.id'))
+            ->where($query->expr()->in('s.access', $query->createNamedParameter(self::ACCESS_PUBLIC)))
+            ->andWhere($query->expr()->eq('s.type', $query->createNamedParameter('calendar')))
+            ->execute();
+
+        while($row = $result->fetch()) {
+            list(, $name) = Uri\split($row['principaluri']);
+            $row['displayname'] = $row['displayname'] . "($name)";
+            $components = [];
+            if ($row['components']) {
+                $components = explode(',',$row['components']);
+            }
+            $calendar = [
+                'id' => $row['id'],
+                'uri' => $row['publicuri'],
+                'principaluri' => $this->convertPrincipal($row['principaluri'], !$this->legacyEndpoint),
+                '{' . Plugin::NS_CALENDARSERVER . '}getctag' => 'http://sabre.io/ns/sync/' . ($row['synctoken']?$row['synctoken']:'0'),
+                '{http://sabredav.org/ns}sync-token' => $row['synctoken']?$row['synctoken']:'0',
+                '{' . Plugin::NS_CALDAV . '}supported-calendar-component-set' => new SupportedCalendarComponentSet($components),
+                '{' . Plugin::NS_CALDAV . '}schedule-calendar-transp' => new ScheduleCalendarTransp($row['transparent']?'transparent':'opaque'),
+                '{' . \OCA\DAV\DAV\Sharing\Plugin::NS_OWNCLOUD . '}owner-principal' => $this->convertPrincipal($row['principaluri'], $this->legacyEndpoint),
+                '{' . \OCA\DAV\DAV\Sharing\Plugin::NS_OWNCLOUD . '}read-only' => (int)$row['access'] === Backend::ACCESS_READ,
+                '{' . \OCA\DAV\DAV\Sharing\Plugin::NS_OWNCLOUD . '}public' => (int)$row['access'] === self::ACCESS_PUBLIC,
+            ];
+
+            foreach($this->propertyMap as $xmlName=>$dbName) {
+                $calendar[$xmlName] = $row[$dbName];
+            }
+
+            $this->addOwnerPrincipal($calendar);
+
+            if (!isset($calendars[$calendar['id']])) {
+                $calendars[$calendar['id']] = $calendar;
+            }
+        }
+        $result->closeCursor();
+
+        return array_values($calendars);
+    }
+
+    /**
+     * @param string $uri
+     * @return array
+     * @throws NotFound
+     */
+    public function getPublicCalendar($uri) {
+        $fields = array_values($this->propertyMap);
+        $fields[] = 'a.id';
+        $fields[] = 'a.uri';
+        $fields[] = 'a.synctoken';
+        $fields[] = 'a.components';
+        $fields[] = 'a.principaluri';
+        $fields[] = 'a.transparent';
+        $fields[] = 's.access';
+        $fields[] = 's.publicuri';
+        $query = $this->db->getQueryBuilder();
+        $result = $query->select($fields)
+            ->from('dav_shares', 's')
+            ->join('s', 'calendars', 'a', $query->expr()->eq('s.resourceid', 'a.id'))
+            ->where($query->expr()->in('s.access', $query->createNamedParameter(self::ACCESS_PUBLIC)))
+            ->andWhere($query->expr()->eq('s.type', $query->createNamedParameter('calendar')))
+            ->andWhere($query->expr()->eq('s.publicuri', $query->createNamedParameter($uri)))
+            ->execute();
+
+        $row = $result->fetch(\PDO::FETCH_ASSOC);
+
+        $result->closeCursor();
+
+        if ($row === false) {
+            throw new NotFound('Node with name \'' . $uri . '\' could not be found');
+        }
+
+        list(, $name) = Uri\split($row['principaluri']);
+        $row['displayname'] = $row['displayname'] . ' ' . "($name)";
+        $components = [];
+        if ($row['components']) {
+            $components = explode(',',$row['components']);
+        }
+        $calendar = [
+            'id' => $row['id'],
+            'uri' => $row['publicuri'],
+            'principaluri' => $this->convertPrincipal($row['principaluri'], !$this->legacyEndpoint),
+            '{' . Plugin::NS_CALENDARSERVER . '}getctag' => 'http://sabre.io/ns/sync/' . ($row['synctoken']?$row['synctoken']:'0'),
+            '{http://sabredav.org/ns}sync-token' => $row['synctoken']?$row['synctoken']:'0',
+            '{' . Plugin::NS_CALDAV . '}supported-calendar-component-set' => new SupportedCalendarComponentSet($components),
+            '{' . Plugin::NS_CALDAV . '}schedule-calendar-transp' => new ScheduleCalendarTransp($row['transparent']?'transparent':'opaque'),
+            '{' . \OCA\DAV\DAV\Sharing\Plugin::NS_OWNCLOUD . '}owner-principal' => $this->convertPrincipal($row['principaluri'], !$this->legacyEndpoint),
+            '{' . \OCA\DAV\DAV\Sharing\Plugin::NS_OWNCLOUD . '}read-only' => (int)$row['access'] === Backend::ACCESS_READ,
+            '{' . \OCA\DAV\DAV\Sharing\Plugin::NS_OWNCLOUD . '}public' => (int)$row['access'] === self::ACCESS_PUBLIC,
+        ];
+
+        foreach($this->propertyMap as $xmlName=>$dbName) {
+            $calendar[$xmlName] = $row[$dbName];
+        }
+
+        $this->addOwnerPrincipal($calendar);
+
+        return $calendar;
+
+    }
+
+    /**
+     * @param string $principal
+     * @param string $uri
+     * @return array|null
+     */
+    public function getCalendarByUri($principal, $uri) {
+        $fields = array_values($this->propertyMap);
+        $fields[] = 'id';
+        $fields[] = 'uri';
+        $fields[] = 'synctoken';
+        $fields[] = 'components';
+        $fields[] = 'principaluri';
+        $fields[] = 'transparent';
+
+        // Making fields a comma-delimited list
+        $query = $this->db->getQueryBuilder();
+        $query->select($fields)->from('calendars')
+            ->where($query->expr()->eq('uri', $query->createNamedParameter($uri)))
+            ->andWhere($query->expr()->eq('principaluri', $query->createNamedParameter($principal)))
+            ->setMaxResults(1);
+        $stmt = $query->execute();
+
+        $row = $stmt->fetch(\PDO::FETCH_ASSOC);
+        $stmt->closeCursor();
+        if ($row === false) {
+            return null;
+        }
+
+        $components = [];
+        if ($row['components']) {
+            $components = explode(',',$row['components']);
+        }
+
+        $calendar = [
+            'id' => $row['id'],
+            'uri' => $row['uri'],
+            'principaluri' => $this->convertPrincipal($row['principaluri'], !$this->legacyEndpoint),
+            '{' . Plugin::NS_CALENDARSERVER . '}getctag' => 'http://sabre.io/ns/sync/' . ($row['synctoken']?$row['synctoken']:'0'),
+            '{http://sabredav.org/ns}sync-token' => $row['synctoken']?$row['synctoken']:'0',
+            '{' . Plugin::NS_CALDAV . '}supported-calendar-component-set' => new SupportedCalendarComponentSet($components),
+            '{' . Plugin::NS_CALDAV . '}schedule-calendar-transp' => new ScheduleCalendarTransp($row['transparent']?'transparent':'opaque'),
+        ];
+
+        foreach($this->propertyMap as $xmlName=>$dbName) {
+            $calendar[$xmlName] = $row[$dbName];
+        }
+
+        $this->addOwnerPrincipal($calendar);
+
+        return $calendar;
+    }
+
+    /**
+     * @param $calendarId
+     * @return array|null
+     */
+    public function getCalendarById($calendarId) {
+        $fields = array_values($this->propertyMap);
+        $fields[] = 'id';
+        $fields[] = 'uri';
+        $fields[] = 'synctoken';
+        $fields[] = 'components';
+        $fields[] = 'principaluri';
+        $fields[] = 'transparent';
+
+        // Making fields a comma-delimited list
+        $query = $this->db->getQueryBuilder();
+        $query->select($fields)->from('calendars')
+            ->where($query->expr()->eq('id', $query->createNamedParameter($calendarId)))
+            ->setMaxResults(1);
+        $stmt = $query->execute();
+
+        $row = $stmt->fetch(\PDO::FETCH_ASSOC);
+        $stmt->closeCursor();
+        if ($row === false) {
+            return null;
+        }
+
+        $components = [];
+        if ($row['components']) {
+            $components = explode(',',$row['components']);
+        }
+
+        $calendar = [
+            'id' => $row['id'],
+            'uri' => $row['uri'],
+            'principaluri' => $this->convertPrincipal($row['principaluri'], !$this->legacyEndpoint),
+            '{' . Plugin::NS_CALENDARSERVER . '}getctag' => 'http://sabre.io/ns/sync/' . ($row['synctoken']?$row['synctoken']:'0'),
+            '{http://sabredav.org/ns}sync-token' => $row['synctoken']?$row['synctoken']:'0',
+            '{' . Plugin::NS_CALDAV . '}supported-calendar-component-set' => new SupportedCalendarComponentSet($components),
+            '{' . Plugin::NS_CALDAV . '}schedule-calendar-transp' => new ScheduleCalendarTransp($row['transparent']?'transparent':'opaque'),
+        ];
+
+        foreach($this->propertyMap as $xmlName=>$dbName) {
+            $calendar[$xmlName] = $row[$dbName];
+        }
+
+        $this->addOwnerPrincipal($calendar);
+
+        return $calendar;
+    }
+
+    /**
+     * @param $subscriptionId
+     */
+    public function getSubscriptionById($subscriptionId) {
+        $fields = array_values($this->subscriptionPropertyMap);
+        $fields[] = 'id';
+        $fields[] = 'uri';
+        $fields[] = 'source';
+        $fields[] = 'synctoken';
+        $fields[] = 'principaluri';
+        $fields[] = 'lastmodified';
+
+        $query = $this->db->getQueryBuilder();
+        $query->select($fields)
+            ->from('calendarsubscriptions')
+            ->where($query->expr()->eq('id', $query->createNamedParameter($subscriptionId)))
+            ->orderBy('calendarorder', 'asc');
+        $stmt =$query->execute();
+
+        $row = $stmt->fetch(\PDO::FETCH_ASSOC);
+        $stmt->closeCursor();
+        if ($row === false) {
+            return null;
+        }
+
+        $subscription = [
+            'id'           => $row['id'],
+            'uri'          => $row['uri'],
+            'principaluri' => $row['principaluri'],
+            'source'       => $row['source'],
+            'lastmodified' => $row['lastmodified'],
+            '{' . Plugin::NS_CALDAV . '}supported-calendar-component-set' => new SupportedCalendarComponentSet(['VTODO', 'VEVENT']),
+            '{http://sabredav.org/ns}sync-token' => $row['synctoken']?$row['synctoken']:'0',
+        ];
+
+        foreach($this->subscriptionPropertyMap as $xmlName=>$dbName) {
+            if (!is_null($row[$dbName])) {
+                $subscription[$xmlName] = $row[$dbName];
+            }
+        }
+
+        return $subscription;
+    }
+
+    /**
+     * Creates a new calendar for a principal.
+     *
+     * If the creation was a success, an id must be returned that can be used to reference
+     * this calendar in other methods, such as updateCalendar.
+     *
+     * @param string $principalUri
+     * @param string $calendarUri
+     * @param array $properties
+     * @return int
+     * @suppress SqlInjectionChecker
+     */
+    function createCalendar($principalUri, $calendarUri, array $properties) {
+        $values = [
+            'principaluri' => $this->convertPrincipal($principalUri, true),
+            'uri'          => $calendarUri,
+            'synctoken'    => 1,
+            'transparent'  => 0,
+            'components'   => 'VEVENT,VTODO',
+            'displayname'  => $calendarUri
+        ];
+
+        // Default value
+        $sccs = '{urn:ietf:params:xml:ns:caldav}supported-calendar-component-set';
+        if (isset($properties[$sccs])) {
+            if (!($properties[$sccs] instanceof SupportedCalendarComponentSet)) {
+                throw new DAV\Exception('The ' . $sccs . ' property must be of type: \Sabre\CalDAV\Property\SupportedCalendarComponentSet');
+            }
+            $values['components'] = implode(',',$properties[$sccs]->getValue());
+        } else if (isset($properties['components'])) {
+            // Allow to provide components internally without having
+            // to create a SupportedCalendarComponentSet object
+            $values['components'] = $properties['components'];
+        }
+
+        $transp = '{' . Plugin::NS_CALDAV . '}schedule-calendar-transp';
+        if (isset($properties[$transp])) {
+            $values['transparent'] = (int) ($properties[$transp]->getValue() === 'transparent');
+        }
+
+        foreach($this->propertyMap as $xmlName=>$dbName) {
+            if (isset($properties[$xmlName])) {
+                $values[$dbName] = $properties[$xmlName];
+            }
+        }
+
+        $query = $this->db->getQueryBuilder();
+        $query->insert('calendars');
+        foreach($values as $column => $value) {
+            $query->setValue($column, $query->createNamedParameter($value));
+        }
+        $query->execute();
+        $calendarId = $query->getLastInsertId();
+
+        $this->dispatcher->dispatch('\OCA\DAV\CalDAV\CalDavBackend::createCalendar', new GenericEvent(
+            '\OCA\DAV\CalDAV\CalDavBackend::createCalendar',
+            [
+                'calendarId' => $calendarId,
+                'calendarData' => $this->getCalendarById($calendarId),
+        ]));
+
+        return $calendarId;
+    }
+
+    /**
+     * Updates properties for a calendar.
+     *
+     * The list of mutations is stored in a Sabre\DAV\PropPatch object.
+     * To do the actual updates, you must tell this object which properties
+     * you're going to process with the handle() method.
+     *
+     * Calling the handle method is like telling the PropPatch object "I
+     * promise I can handle updating this property".
+     *
+     * Read the PropPatch documentation for more info and examples.
+     *
+     * @param mixed $calendarId
+     * @param PropPatch $propPatch
+     * @return void
+     */
+    function updateCalendar($calendarId, PropPatch $propPatch) {
+        $supportedProperties = array_keys($this->propertyMap);
+        $supportedProperties[] = '{' . Plugin::NS_CALDAV . '}schedule-calendar-transp';
+
+        /**
+         * @suppress SqlInjectionChecker
+         */
+        $propPatch->handle($supportedProperties, function($mutations) use ($calendarId) {
+            $newValues = [];
+            foreach ($mutations as $propertyName => $propertyValue) {
+
+                switch ($propertyName) {
+                    case '{' . Plugin::NS_CALDAV . '}schedule-calendar-transp' :
+                        $fieldName = 'transparent';
+                        $newValues[$fieldName] = (int) ($propertyValue->getValue() === 'transparent');
+                        break;
+                    default :
+                        $fieldName = $this->propertyMap[$propertyName];
+                        $newValues[$fieldName] = $propertyValue;
+                        break;
+                }
+
+            }
+            $query = $this->db->getQueryBuilder();
+            $query->update('calendars');
+            foreach ($newValues as $fieldName => $value) {
+                $query->set($fieldName, $query->createNamedParameter($value));
+            }
+            $query->where($query->expr()->eq('id', $query->createNamedParameter($calendarId)));
+            $query->execute();
+
+            $this->addChange($calendarId, "", 2);
+
+            $this->dispatcher->dispatch('\OCA\DAV\CalDAV\CalDavBackend::updateCalendar', new GenericEvent(
+                '\OCA\DAV\CalDAV\CalDavBackend::updateCalendar',
+                [
+                    'calendarId' => $calendarId,
+                    'calendarData' => $this->getCalendarById($calendarId),
+                    'shares' => $this->getShares($calendarId),
+                    'propertyMutations' => $mutations,
+            ]));
+
+            return true;
+        });
+    }
+
+    /**
+     * Delete a calendar and all it's objects
+     *
+     * @param mixed $calendarId
+     * @return void
+     */
+    function deleteCalendar($calendarId) {
+        $this->dispatcher->dispatch('\OCA\DAV\CalDAV\CalDavBackend::deleteCalendar', new GenericEvent(
+            '\OCA\DAV\CalDAV\CalDavBackend::deleteCalendar',
+            [
+                'calendarId' => $calendarId,
+                'calendarData' => $this->getCalendarById($calendarId),
+                'shares' => $this->getShares($calendarId),
+        ]));
+
+        $stmt = $this->db->prepare('DELETE FROM `*PREFIX*calendarobjects` WHERE `calendarid` = ? AND `calendartype` = ?');
+        $stmt->execute([$calendarId, self::CALENDAR_TYPE_CALENDAR]);
+
+        $stmt = $this->db->prepare('DELETE FROM `*PREFIX*calendars` WHERE `id` = ?');
+        $stmt->execute([$calendarId]);
+
+        $stmt = $this->db->prepare('DELETE FROM `*PREFIX*calendarchanges` WHERE `calendarid` = ? AND `calendartype` = ?');
+        $stmt->execute([$calendarId, self::CALENDAR_TYPE_CALENDAR]);
+
+        $this->calendarSharingBackend->deleteAllShares($calendarId);
+
+        $query = $this->db->getQueryBuilder();
+        $query->delete($this->dbObjectPropertiesTable)
+            ->where($query->expr()->eq('calendarid', $query->createNamedParameter($calendarId)))
+            ->andWhere($query->expr()->eq('calendartype', $query->createNamedParameter(self::CALENDAR_TYPE_CALENDAR)))
+            ->execute();
+    }
+
+    /**
+     * Delete all of an user's shares
+     *
+     * @param string $principaluri
+     * @return void
+     */
+    function deleteAllSharesByUser($principaluri) {
+        $this->calendarSharingBackend->deleteAllSharesByUser($principaluri);
+    }
+
+    /**
+     * Returns all calendar objects within a calendar.
+     *
+     * Every item contains an array with the following keys:
+     *   * calendardata - The iCalendar-compatible calendar data
+     *   * uri - a unique key which will be used to construct the uri. This can
+     *     be any arbitrary string, but making sure it ends with '.ics' is a
+     *     good idea. This is only the basename, or filename, not the full
+     *     path.
+     *   * lastmodified - a timestamp of the last modification time
+     *   * etag - An arbitrary string, surrounded by double-quotes. (e.g.:
+     *   '"abcdef"')
+     *   * size - The size of the calendar objects, in bytes.
+     *   * component - optional, a string containing the type of object, such
+     *     as 'vevent' or 'vtodo'. If specified, this will be used to populate
+     *     the Content-Type header.
+     *
+     * Note that the etag is optional, but it's highly encouraged to return for
+     * speed reasons.
+     *
+     * The calendardata is also optional. If it's not returned
+     * 'getCalendarObject' will be called later, which *is* expected to return
+     * calendardata.
+     *
+     * If neither etag or size are specified, the calendardata will be
+     * used/fetched to determine these numbers. If both are specified the
+     * amount of times this is needed is reduced by a great degree.
+     *
+     * @param mixed $id
+     * @param int $calendarType
+     * @return array
+     */
+    public function getCalendarObjects($id, $calendarType=self::CALENDAR_TYPE_CALENDAR):array {
+        $query = $this->db->getQueryBuilder();
+        $query->select(['id', 'uri', 'lastmodified', 'etag', 'calendarid', 'size', 'componenttype', 'classification'])
+            ->from('calendarobjects')
+            ->where($query->expr()->eq('calendarid', $query->createNamedParameter($id)))
+            ->andWhere($query->expr()->eq('calendartype', $query->createNamedParameter($calendarType)));
+        $stmt = $query->execute();
+
+        $result = [];
+        foreach($stmt->fetchAll(\PDO::FETCH_ASSOC) as $row) {
+            $result[] = [
+                'id'           => $row['id'],
+                'uri'          => $row['uri'],
+                'lastmodified' => $row['lastmodified'],
+                'etag'         => '"' . $row['etag'] . '"',
+                'calendarid'   => $row['calendarid'],
+                'size'         => (int)$row['size'],
+                'component'    => strtolower($row['componenttype']),
+                'classification'=> (int)$row['classification']
+            ];
+        }
+
+        return $result;
+    }
+
+    /**
+     * Returns information from a single calendar object, based on it's object
+     * uri.
+     *
+     * The object uri is only the basename, or filename and not a full path.
+     *
+     * The returned array must have the same keys as getCalendarObjects. The
+     * 'calendardata' object is required here though, while it's not required
+     * for getCalendarObjects.
+     *
+     * This method must return null if the object did not exist.
+     *
+     * @param mixed $id
+     * @param string $objectUri
+     * @param int $calendarType
+     * @return array|null
+     */
+    public function getCalendarObject($id, $objectUri, $calendarType=self::CALENDAR_TYPE_CALENDAR) {
+        $query = $this->db->getQueryBuilder();
+        $query->select(['id', 'uri', 'lastmodified', 'etag', 'calendarid', 'size', 'calendardata', 'componenttype', 'classification'])
+            ->from('calendarobjects')
+            ->where($query->expr()->eq('calendarid', $query->createNamedParameter($id)))
+            ->andWhere($query->expr()->eq('uri', $query->createNamedParameter($objectUri)))
+            ->andWhere($query->expr()->eq('calendartype', $query->createNamedParameter($calendarType)));
+        $stmt = $query->execute();
+        $row = $stmt->fetch(\PDO::FETCH_ASSOC);
+
+        if(!$row) {
+            return null;
+        }
+
+        return [
+            'id'            => $row['id'],
+            'uri'           => $row['uri'],
+            'lastmodified'  => $row['lastmodified'],
+            'etag'          => '"' . $row['etag'] . '"',
+            'calendarid'    => $row['calendarid'],
+            'size'          => (int)$row['size'],
+            'calendardata'  => $this->readBlob($row['calendardata']),
+            'component'     => strtolower($row['componenttype']),
+            'classification'=> (int)$row['classification']
+        ];
+    }
+
+    /**
+     * Returns a list of calendar objects.
+     *
+     * This method should work identical to getCalendarObject, but instead
+     * return all the calendar objects in the list as an array.
+     *
+     * If the backend supports this, it may allow for some speed-ups.
+     *
+     * @param mixed $calendarId
+     * @param string[] $uris
+     * @param int $calendarType
+     * @return array
+     */
+    public function getMultipleCalendarObjects($id, array $uris, $calendarType=self::CALENDAR_TYPE_CALENDAR):array {
+        if (empty($uris)) {
+            return [];
+        }
+
+        $chunks = array_chunk($uris, 100);
+        $objects = [];
+
+        $query = $this->db->getQueryBuilder();
+        $query->select(['id', 'uri', 'lastmodified', 'etag', 'calendarid', 'size', 'calendardata', 'componenttype', 'classification'])
+            ->from('calendarobjects')
+            ->where($query->expr()->eq('calendarid', $query->createNamedParameter($id)))
+            ->andWhere($query->expr()->in('uri', $query->createParameter('uri')))
+            ->andWhere($query->expr()->eq('calendartype', $query->createNamedParameter($calendarType)));
+
+        foreach ($chunks as $uris) {
+            $query->setParameter('uri', $uris, IQueryBuilder::PARAM_STR_ARRAY);
+            $result = $query->execute();
+
+            while ($row = $result->fetch()) {
+                $objects[] = [
+                    'id'           => $row['id'],
+                    'uri'          => $row['uri'],
+                    'lastmodified' => $row['lastmodified'],
+                    'etag'         => '"' . $row['etag'] . '"',
+                    'calendarid'   => $row['calendarid'],
+                    'size'         => (int)$row['size'],
+                    'calendardata' => $this->readBlob($row['calendardata']),
+                    'component'    => strtolower($row['componenttype']),
+                    'classification' => (int)$row['classification']
+                ];
+            }
+            $result->closeCursor();
+        }
+
+        return $objects;
+    }
+
+    /**
+     * Creates a new calendar object.
+     *
+     * The object uri is only the basename, or filename and not a full path.
+     *
+     * It is possible return an etag from this function, which will be used in
+     * the response to this PUT request. Note that the ETag must be surrounded
+     * by double-quotes.
+     *
+     * However, you should only really return this ETag if you don't mangle the
+     * calendar-data. If the result of a subsequent GET to this object is not
+     * the exact same as this request body, you should omit the ETag.
+     *
+     * @param mixed $calendarId
+     * @param string $objectUri
+     * @param string $calendarData
+     * @param int $calendarType
+     * @return string
+     */
+    function createCalendarObject($calendarId, $objectUri, $calendarData, $calendarType=self::CALENDAR_TYPE_CALENDAR) {
+        $extraData = $this->getDenormalizedData($calendarData);
+
+        $q = $this->db->getQueryBuilder();
+        $q->select($q->func()->count('*'))
+            ->from('calendarobjects')
+            ->where($q->expr()->eq('calendarid', $q->createNamedParameter($calendarId)))
+            ->andWhere($q->expr()->eq('uid', $q->createNamedParameter($extraData['uid'])))
+            ->andWhere($q->expr()->eq('calendartype', $q->createNamedParameter($calendarType)));
+
+        $result = $q->execute();
+        $count = (int) $result->fetchColumn();
+        $result->closeCursor();
+
+        if ($count !== 0) {
+            throw new \Sabre\DAV\Exception\BadRequest('Calendar object with uid already exists in this calendar collection.');
+        }
+
+        $query = $this->db->getQueryBuilder();
+        $query->insert('calendarobjects')
+            ->values([
+                'calendarid' => $query->createNamedParameter($calendarId),
+                'uri' => $query->createNamedParameter($objectUri),
+                'calendardata' => $query->createNamedParameter($calendarData, IQueryBuilder::PARAM_LOB),
+                'lastmodified' => $query->createNamedParameter(time()),
+                'etag' => $query->createNamedParameter($extraData['etag']),
+                'size' => $query->createNamedParameter($extraData['size']),
+                'componenttype' => $query->createNamedParameter($extraData['componentType']),
+                'firstoccurence' => $query->createNamedParameter($extraData['firstOccurence']),
+                'lastoccurence' => $query->createNamedParameter($extraData['lastOccurence']),
+                'classification' => $query->createNamedParameter($extraData['classification']),
+                'uid' => $query->createNamedParameter($extraData['uid']),
+                'calendartype' => $query->createNamedParameter($calendarType),
+            ])
+            ->execute();
+
+        $this->updateProperties($calendarId, $objectUri, $calendarData, $calendarType);
+
+        if ($calendarType === self::CALENDAR_TYPE_CALENDAR) {
+            $this->dispatcher->dispatch('\OCA\DAV\CalDAV\CalDavBackend::createCalendarObject', new GenericEvent(
+                '\OCA\DAV\CalDAV\CalDavBackend::createCalendarObject',
+                [
+                    'calendarId' => $calendarId,
+                    'calendarData' => $this->getCalendarById($calendarId),
+                    'shares' => $this->getShares($calendarId),
+                    'objectData' => $this->getCalendarObject($calendarId, $objectUri),
+                ]
+            ));
+        } else {
+            $this->dispatcher->dispatch('\OCA\DAV\CalDAV\CalDavBackend::createCachedCalendarObject', new GenericEvent(
+                '\OCA\DAV\CalDAV\CalDavBackend::createCachedCalendarObject',
+                [
+                    'subscriptionId' => $calendarId,
+                    'calendarData' => $this->getCalendarById($calendarId),
+                    'shares' => $this->getShares($calendarId),
+                    'objectData' => $this->getCalendarObject($calendarId, $objectUri),
+                ]
+            ));
+        }
+        $this->addChange($calendarId, $objectUri, 1, $calendarType);
+
+        return '"' . $extraData['etag'] . '"';
+    }
+
+    /**
+     * Updates an existing calendarobject, based on it's uri.
+     *
+     * The object uri is only the basename, or filename and not a full path.
+     *
+     * It is possible return an etag from this function, which will be used in
+     * the response to this PUT request. Note that the ETag must be surrounded
+     * by double-quotes.
+     *
+     * However, you should only really return this ETag if you don't mangle the
+     * calendar-data. If the result of a subsequent GET to this object is not
+     * the exact same as this request body, you should omit the ETag.
+     *
+     * @param mixed $calendarId
+     * @param string $objectUri
+     * @param string $calendarData
+     * @param int $calendarType
+     * @return string
+     */
+    function updateCalendarObject($calendarId, $objectUri, $calendarData, $calendarType=self::CALENDAR_TYPE_CALENDAR) {
+        $extraData = $this->getDenormalizedData($calendarData);
+        $query = $this->db->getQueryBuilder();
+        $query->update('calendarobjects')
+                ->set('calendardata', $query->createNamedParameter($calendarData, IQueryBuilder::PARAM_LOB))
+                ->set('lastmodified', $query->createNamedParameter(time()))
+                ->set('etag', $query->createNamedParameter($extraData['etag']))
+                ->set('size', $query->createNamedParameter($extraData['size']))
+                ->set('componenttype', $query->createNamedParameter($extraData['componentType']))
+                ->set('firstoccurence', $query->createNamedParameter($extraData['firstOccurence']))
+                ->set('lastoccurence', $query->createNamedParameter($extraData['lastOccurence']))
+                ->set('classification', $query->createNamedParameter($extraData['classification']))
+                ->set('uid', $query->createNamedParameter($extraData['uid']))
+            ->where($query->expr()->eq('calendarid', $query->createNamedParameter($calendarId)))
+            ->andWhere($query->expr()->eq('uri', $query->createNamedParameter($objectUri)))
+            ->andWhere($query->expr()->eq('calendartype', $query->createNamedParameter($calendarType)))
+            ->execute();
+
+        $this->updateProperties($calendarId, $objectUri, $calendarData, $calendarType);
+
+        $data = $this->getCalendarObject($calendarId, $objectUri);
+        if (is_array($data)) {
+            if ($calendarType === self::CALENDAR_TYPE_CALENDAR) {
+                $this->dispatcher->dispatch('\OCA\DAV\CalDAV\CalDavBackend::updateCalendarObject', new GenericEvent(
+                    '\OCA\DAV\CalDAV\CalDavBackend::updateCalendarObject',
+                    [
+                        'calendarId' => $calendarId,
+                        'calendarData' => $this->getCalendarById($calendarId),
+                        'shares' => $this->getShares($calendarId),
+                        'objectData' => $data,
+                    ]
+                ));
+            } else {
+                $this->dispatcher->dispatch('\OCA\DAV\CalDAV\CalDavBackend::updateCachedCalendarObject', new GenericEvent(
+                    '\OCA\DAV\CalDAV\CalDavBackend::updateCachedCalendarObject',
+                    [
+                        'subscriptionId' => $calendarId,
+                        'calendarData' => $this->getCalendarById($calendarId),
+                        'shares' => $this->getShares($calendarId),
+                        'objectData' => $data,
+                    ]
+                ));
+            }
+        }
+        $this->addChange($calendarId, $objectUri, 2, $calendarType);
+
+        return '"' . $extraData['etag'] . '"';
+    }
+
+    /**
+     * @param int $calendarObjectId
+     * @param int $classification
+     */
+    public function setClassification($calendarObjectId, $classification) {
+        if (!in_array($classification, [
+            self::CLASSIFICATION_PUBLIC, self::CLASSIFICATION_PRIVATE, self::CLASSIFICATION_CONFIDENTIAL
+        ])) {
+            throw new \InvalidArgumentException();
+        }
+        $query = $this->db->getQueryBuilder();
+        $query->update('calendarobjects')
+            ->set('classification', $query->createNamedParameter($classification))
+            ->where($query->expr()->eq('id', $query->createNamedParameter($calendarObjectId)))
+            ->execute();
+    }
+
+    /**
+     * Deletes an existing calendar object.
+     *
+     * The object uri is only the basename, or filename and not a full path.
+     *
+     * @param mixed $calendarId
+     * @param string $objectUri
+     * @param int $calendarType
+     * @return void
+     */
+    function deleteCalendarObject($calendarId, $objectUri, $calendarType=self::CALENDAR_TYPE_CALENDAR) {
+        $data = $this->getCalendarObject($calendarId, $objectUri, $calendarType);
+        if (is_array($data)) {
+            if ($calendarType === self::CALENDAR_TYPE_CALENDAR) {
+                $this->dispatcher->dispatch('\OCA\DAV\CalDAV\CalDavBackend::deleteCalendarObject', new GenericEvent(
+                    '\OCA\DAV\CalDAV\CalDavBackend::deleteCalendarObject',
+                    [
+                        'calendarId' => $calendarId,
+                        'calendarData' => $this->getCalendarById($calendarId),
+                        'shares' => $this->getShares($calendarId),
+                        'objectData' => $data,
+                    ]
+                ));
+            } else {
+                $this->dispatcher->dispatch('\OCA\DAV\CalDAV\CalDavBackend::deleteCachedCalendarObject', new GenericEvent(
+                    '\OCA\DAV\CalDAV\CalDavBackend::deleteCachedCalendarObject',
+                    [
+                        'subscriptionId' => $calendarId,
+                        'calendarData' => $this->getCalendarById($calendarId),
+                        'shares' => $this->getShares($calendarId),
+                        'objectData' => $data,
+                    ]
+                ));
+            }
+        }
+
+        $stmt = $this->db->prepare('DELETE FROM `*PREFIX*calendarobjects` WHERE `calendarid` = ? AND `uri` = ? AND `calendartype` = ?');
+        $stmt->execute([$calendarId, $objectUri, $calendarType]);
+
+        if (is_array($data)) {
+            $this->purgeProperties($calendarId, $data['id'], $calendarType);
+        }
+
+        $this->addChange($calendarId, $objectUri, 3, $calendarType);
+    }
+
+    /**
+     * Performs a calendar-query on the contents of this calendar.
+     *
+     * The calendar-query is defined in RFC4791 : CalDAV. Using the
+     * calendar-query it is possible for a client to request a specific set of
+     * object, based on contents of iCalendar properties, date-ranges and
+     * iCalendar component types (VTODO, VEVENT).
+     *
+     * This method should just return a list of (relative) urls that match this
+     * query.
+     *
+     * The list of filters are specified as an array. The exact array is
+     * documented by Sabre\CalDAV\CalendarQueryParser.
+     *
+     * Note that it is extremely likely that getCalendarObject for every path
+     * returned from this method will be called almost immediately after. You
+     * may want to anticipate this to speed up these requests.
+     *
+     * This method provides a default implementation, which parses *all* the
+     * iCalendar objects in the specified calendar.
+     *
+     * This default may well be good enough for personal use, and calendars
+     * that aren't very large. But if you anticipate high usage, big calendars
+     * or high loads, you are strongly advised to optimize certain paths.
+     *
+     * The best way to do so is override this method and to optimize
+     * specifically for 'common filters'.
+     *
+     * Requests that are extremely common are:
+     *   * requests for just VEVENTS
+     *   * requests for just VTODO
+     *   * requests with a time-range-filter on either VEVENT or VTODO.
+     *
+     * ..and combinations of these requests. It may not be worth it to try to
+     * handle every possible situation and just rely on the (relatively
+     * easy to use) CalendarQueryValidator to handle the rest.
+     *
+     * Note that especially time-range-filters may be difficult to parse. A
+     * time-range filter specified on a VEVENT must for instance also handle
+     * recurrence rules correctly.
+     * A good example of how to interprete all these filters can also simply
+     * be found in Sabre\CalDAV\CalendarQueryFilter. This class is as correct
+     * as possible, so it gives you a good idea on what type of stuff you need
+     * to think of.
+     *
+     * @param mixed $id
+     * @param array $filters
+     * @param int $calendarType
+     * @return array
+     */
+    public function calendarQuery($id, array $filters, $calendarType=self::CALENDAR_TYPE_CALENDAR):array {
+        $componentType = null;
+        $requirePostFilter = true;
+        $timeRange = null;
+
+        // if no filters were specified, we don't need to filter after a query
+        if (!$filters['prop-filters'] && !$filters['comp-filters']) {
+            $requirePostFilter = false;
+        }
+
+        // Figuring out if there's a component filter
+        if (count($filters['comp-filters']) > 0 && !$filters['comp-filters'][0]['is-not-defined']) {
+            $componentType = $filters['comp-filters'][0]['name'];
+
+            // Checking if we need post-filters
+            if (!$filters['prop-filters'] && !$filters['comp-filters'][0]['comp-filters'] && !$filters['comp-filters'][0]['time-range'] && !$filters['comp-filters'][0]['prop-filters']) {
+                $requirePostFilter = false;
+            }
+            // There was a time-range filter
+            if ($componentType === 'VEVENT' && isset($filters['comp-filters'][0]['time-range'])) {
+                $timeRange = $filters['comp-filters'][0]['time-range'];
+
+                // If start time OR the end time is not specified, we can do a
+                // 100% accurate mysql query.
+                if (!$filters['prop-filters'] && !$filters['comp-filters'][0]['comp-filters'] && !$filters['comp-filters'][0]['prop-filters'] && (!$timeRange['start'] || !$timeRange['end'])) {
+                    $requirePostFilter = false;
+                }
+            }
+
+        }
+        $columns = ['uri'];
+        if ($requirePostFilter) {
+            $columns = ['uri', 'calendardata'];
+        }
+        $query = $this->db->getQueryBuilder();
+        $query->select($columns)
+            ->from('calendarobjects')
+            ->where($query->expr()->eq('calendarid', $query->createNamedParameter($id)))
+            ->andWhere($query->expr()->eq('calendartype', $query->createNamedParameter($calendarType)));
+
+        if ($componentType) {
+            $query->andWhere($query->expr()->eq('componenttype', $query->createNamedParameter($componentType)));
+        }
+
+        if ($timeRange && $timeRange['start']) {
+            $query->andWhere($query->expr()->gt('lastoccurence', $query->createNamedParameter($timeRange['start']->getTimeStamp())));
+        }
+        if ($timeRange && $timeRange['end']) {
+            $query->andWhere($query->expr()->lt('firstoccurence', $query->createNamedParameter($timeRange['end']->getTimeStamp())));
+        }
+
+        $stmt = $query->execute();
+
+        $result = [];
+        while($row = $stmt->fetch(\PDO::FETCH_ASSOC)) {
+            if ($requirePostFilter) {
+                // validateFilterForObject will parse the calendar data
+                // catch parsing errors
+                try {
+                    $matches = $this->validateFilterForObject($row, $filters);
+                } catch(ParseException $ex) {
+                    $this->logger->logException($ex, [
+                        'app' => 'dav',
+                        'message' => 'Caught parsing exception for calendar data. This usually indicates invalid calendar data. calendar-id:'.$id.' uri:'.$row['uri']
+                    ]);
+                    continue;
+                } catch (InvalidDataException $ex) {
+                    $this->logger->logException($ex, [
+                        'app' => 'dav',
+                        'message' => 'Caught invalid data exception for calendar data. This usually indicates invalid calendar data. calendar-id:'.$id.' uri:'.$row['uri']
+                    ]);
+                    continue;
+                }
+
+                if (!$matches) {
+                    continue;
+                }
+            }
+            $result[] = $row['uri'];
+        }
+
+        return $result;
+    }
+
+    /**
+     * custom Nextcloud search extension for CalDAV
+     *
+     * TODO - this should optionally cover cached calendar objects as well
+     *
+     * @param string $principalUri
+     * @param array $filters
+     * @param integer|null $limit
+     * @param integer|null $offset
+     * @return array
+     */
+    public function calendarSearch($principalUri, array $filters, $limit=null, $offset=null) {
+        $calendars = $this->getCalendarsForUser($principalUri);
+        $ownCalendars = [];
+        $sharedCalendars = [];
+
+        $uriMapper = [];
+
+        foreach($calendars as $calendar) {
+            if ($calendar['{http://owncloud.org/ns}owner-principal'] === $principalUri) {
+                $ownCalendars[] = $calendar['id'];
+            } else {
+                $sharedCalendars[] = $calendar['id'];
+            }
+            $uriMapper[$calendar['id']] = $calendar['uri'];
+        }
+        if (count($ownCalendars) === 0 && count($sharedCalendars) === 0) {
+            return [];
+        }
+
+        $query = $this->db->getQueryBuilder();
+        // Calendar id expressions
+        $calendarExpressions = [];
+        foreach($ownCalendars as $id) {
+            $calendarExpressions[] = $query->expr()->andX(
+                $query->expr()->eq('c.calendarid',
+                    $query->createNamedParameter($id)),
+                $query->expr()->eq('c.calendartype',
+                        $query->createNamedParameter(self::CALENDAR_TYPE_CALENDAR)));
+        }
+        foreach($sharedCalendars as $id) {
+            $calendarExpressions[] = $query->expr()->andX(
+                $query->expr()->eq('c.calendarid',
+                    $query->createNamedParameter($id)),
+                $query->expr()->eq('c.classification',
+                    $query->createNamedParameter(self::CLASSIFICATION_PUBLIC)),
+                $query->expr()->eq('c.calendartype',
+                    $query->createNamedParameter(self::CALENDAR_TYPE_CALENDAR)));
+        }
+
+        if (count($calendarExpressions) === 1) {
+            $calExpr = $calendarExpressions[0];
+        } else {
+            $calExpr = call_user_func_array([$query->expr(), 'orX'], $calendarExpressions);
+        }
+
+        // Component expressions
+        $compExpressions = [];
+        foreach($filters['comps'] as $comp) {
+            $compExpressions[] = $query->expr()
+                ->eq('c.componenttype', $query->createNamedParameter($comp));
+        }
+
+        if (count($compExpressions) === 1) {
+            $compExpr = $compExpressions[0];
+        } else {
+            $compExpr = call_user_func_array([$query->expr(), 'orX'], $compExpressions);
+        }
+
+        if (!isset($filters['props'])) {
+            $filters['props'] = [];
+        }
+        if (!isset($filters['params'])) {
+            $filters['params'] = [];
+        }
+
+        $propParamExpressions = [];
+        foreach($filters['props'] as $prop) {
+            $propParamExpressions[] = $query->expr()->andX(
+                $query->expr()->eq('i.name', $query->createNamedParameter($prop)),
+                $query->expr()->isNull('i.parameter')
+            );
+        }
+        foreach($filters['params'] as $param) {
+            $propParamExpressions[] = $query->expr()->andX(
+                $query->expr()->eq('i.name', $query->createNamedParameter($param['property'])),
+                $query->expr()->eq('i.parameter', $query->createNamedParameter($param['parameter']))
+            );
+        }
+
+        if (count($propParamExpressions) === 1) {
+            $propParamExpr = $propParamExpressions[0];
+        } else {
+            $propParamExpr = call_user_func_array([$query->expr(), 'orX'], $propParamExpressions);
+        }
+
+        $query->select(['c.calendarid', 'c.uri'])
+            ->from($this->dbObjectPropertiesTable, 'i')
+            ->join('i', 'calendarobjects', 'c', $query->expr()->eq('i.objectid', 'c.id'))
+            ->where($calExpr)
+            ->andWhere($compExpr)
+            ->andWhere($propParamExpr)
+            ->andWhere($query->expr()->iLike('i.value',
+                $query->createNamedParameter('%'.$this->db->escapeLikeParameter($filters['search-term']).'%')));
+
+        if ($offset) {
+            $query->setFirstResult($offset);
+        }
+        if ($limit) {
+            $query->setMaxResults($limit);
+        }
+
+        $stmt = $query->execute();
+
+        $result = [];
+        while($row = $stmt->fetch(\PDO::FETCH_ASSOC)) {
+            $path = $uriMapper[$row['calendarid']] . '/' . $row['uri'];
+            if (!in_array($path, $result)) {
+                $result[] = $path;
+            }
+        }
+
+        return $result;
+    }
+
+    /**
+     * used for Nextcloud's calendar API
+     *
+     * @param array $calendarInfo
+     * @param string $pattern
+     * @param array $searchProperties
+     * @param array $options
+     * @param integer|null $limit
+     * @param integer|null $offset
+     *
+     * @return array
+     */
+    public function search(array $calendarInfo, $pattern, array $searchProperties,
+                            array $options, $limit, $offset) {
+        $outerQuery = $this->db->getQueryBuilder();
+        $innerQuery = $this->db->getQueryBuilder();
+
+        $innerQuery->selectDistinct('op.objectid')
+            ->from($this->dbObjectPropertiesTable, 'op')
+            ->andWhere($innerQuery->expr()->eq('op.calendarid',
+                $outerQuery->createNamedParameter($calendarInfo['id'])))
+            ->andWhere($innerQuery->expr()->eq('op.calendartype',
+                $outerQuery->createNamedParameter(self::CALENDAR_TYPE_CALENDAR)));
+
+        // only return public items for shared calendars for now
+        if ($calendarInfo['principaluri'] !== $calendarInfo['{http://owncloud.org/ns}owner-principal']) {
+            $innerQuery->andWhere($innerQuery->expr()->eq('c.classification',
+                $outerQuery->createNamedParameter(self::CLASSIFICATION_PUBLIC)));
+        }
+
+        $or = $innerQuery->expr()->orX();
+        foreach($searchProperties as $searchProperty) {
+            $or->add($innerQuery->expr()->eq('op.name',
+                $outerQuery->createNamedParameter($searchProperty)));
+        }
+        $innerQuery->andWhere($or);
+
+        if ($pattern !== '') {
+            $innerQuery->andWhere($innerQuery->expr()->iLike('op.value',
+                $outerQuery->createNamedParameter('%' .
+                    $this->db->escapeLikeParameter($pattern) . '%')));
+        }
+
+        $outerQuery->select('c.id', 'c.calendardata', 'c.componenttype', 'c.uid', 'c.uri')
+            ->from('calendarobjects', 'c');
+
+        if (isset($options['timerange'])) {
+            if (isset($options['timerange']['start']) && $options['timerange']['start'] instanceof DateTime) {
+                $outerQuery->andWhere($outerQuery->expr()->gt('lastoccurence',
+                    $outerQuery->createNamedParameter($options['timerange']['start']->getTimeStamp())));
+
+            }
+            if (isset($options['timerange']['end']) && $options['timerange']['end'] instanceof DateTime) {
+                $outerQuery->andWhere($outerQuery->expr()->lt('firstoccurence',
+                    $outerQuery->createNamedParameter($options['timerange']['end']->getTimeStamp())));
+            }
+        }
+
+        if (isset($options['types'])) {
+            $or = $outerQuery->expr()->orX();
+            foreach($options['types'] as $type) {
+                $or->add($outerQuery->expr()->eq('componenttype',
+                    $outerQuery->createNamedParameter($type)));
+            }
+            $outerQuery->andWhere($or);
+        }
+
+        $outerQuery->andWhere($outerQuery->expr()->in('c.id',
+            $outerQuery->createFunction($innerQuery->getSQL())));
+
+        if ($offset) {
+            $outerQuery->setFirstResult($offset);
+        }
+        if ($limit) {
+            $outerQuery->setMaxResults($limit);
+        }
+
+        $result = $outerQuery->execute();
+        $calendarObjects = $result->fetchAll();
+
+        return array_map(function($o) {
+            $calendarData = Reader::read($o['calendardata']);
+            $comps = $calendarData->getComponents();
+            $objects = [];
+            $timezones = [];
+            foreach($comps as $comp) {
+                if ($comp instanceof VTimeZone) {
+                    $timezones[] = $comp;
+                } else {
+                    $objects[] = $comp;
+                }
+            }
+
+            return [
+                'id' => $o['id'],
+                'type' => $o['componenttype'],
+                'uid' => $o['uid'],
+                'uri' => $o['uri'],
+                'objects' => array_map(function($c) {
+                    return $this->transformSearchData($c);
+                }, $objects),
+                'timezones' => array_map(function($c) {
+                    return $this->transformSearchData($c);
+                }, $timezones),
+            ];
+        }, $calendarObjects);
+    }
+
+    /**
+     * @param Component $comp
+     * @return array
+     */
+    private function transformSearchData(Component $comp) {
+        $data = [];
+        /** @var Component[] $subComponents */
+        $subComponents = $comp->getComponents();
+        /** @var Property[] $properties */
+        $properties = array_filter($comp->children(), function($c) {
+            return $c instanceof Property;
+        });
+        $validationRules = $comp->getValidationRules();
+
+        foreach($subComponents as $subComponent) {
+            $name = $subComponent->name;
+            if (!isset($data[$name])) {
+                $data[$name] = [];
+            }
+            $data[$name][] = $this->transformSearchData($subComponent);
+        }
+
+        foreach($properties as $property) {
+            $name = $property->name;
+            if (!isset($validationRules[$name])) {
+                $validationRules[$name] = '*';
+            }
+
+            $rule = $validationRules[$property->name];
+            if ($rule === '+' || $rule === '*') { // multiple
+                if (!isset($data[$name])) {
+                    $data[$name] = [];
+                }
+
+                $data[$name][] = $this->transformSearchProperty($property);
+            } else { // once
+                $data[$name] = $this->transformSearchProperty($property);
+            }
+        }
+
+        return $data;
+    }
+
+    /**
+     * @param Property $prop
+     * @return array
+     */
+    private function transformSearchProperty(Property $prop) {
+        // No need to check Date, as it extends DateTime
+        if ($prop instanceof Property\ICalendar\DateTime) {
+            $value = $prop->getDateTime();
+        } else {
+            $value = $prop->getValue();
+        }
+
+        return [
+            $value,
+            $prop->parameters()
+        ];
+    }
+
+    /**
+     * Searches through all of a users calendars and calendar objects to find
+     * an object with a specific UID.
+     *
+     * This method should return the path to this object, relative to the
+     * calendar home, so this path usually only contains two parts:
+     *
+     * calendarpath/objectpath.ics
+     *
+     * If the uid is not found, return null.
+     *
+     * This method should only consider * objects that the principal owns, so
+     * any calendars owned by other principals that also appear in this
+     * collection should be ignored.
+     *
+     * @param string $principalUri
+     * @param string $uid
+     * @return string|null
+     */
+    function getCalendarObjectByUID($principalUri, $uid) {
+
+        $query = $this->db->getQueryBuilder();
+        $query->selectAlias('c.uri', 'calendaruri')->selectAlias('co.uri', 'objecturi')
+            ->from('calendarobjects', 'co')
+            ->leftJoin('co', 'calendars', 'c', $query->expr()->eq('co.calendarid', 'c.id'))
+            ->where($query->expr()->eq('c.principaluri', $query->createNamedParameter($principalUri)))
+            ->andWhere($query->expr()->eq('co.uid', $query->createNamedParameter($uid)))
+            ->andWhere($query->expr()->eq('co.uid', $query->createNamedParameter($uid)));
+
+        $stmt = $query->execute();
+
+        if ($row = $stmt->fetch(\PDO::FETCH_ASSOC)) {
+            return $row['calendaruri'] . '/' . $row['objecturi'];
+        }
+
+        return null;
+    }
+
+    /**
+     * The getChanges method returns all the changes that have happened, since
+     * the specified syncToken in the specified calendar.
+     *
+     * This function should return an array, such as the following:
+     *
+     * [
+     *   'syncToken' => 'The current synctoken',
+     *   'added'   => [
+     *      'new.txt',
+     *   ],
+     *   'modified'   => [
+     *      'modified.txt',
+     *   ],
+     *   'deleted' => [
+     *      'foo.php.bak',
+     *      'old.txt'
+     *   ]
+     * );
+     *
+     * The returned syncToken property should reflect the *current* syncToken
+     * of the calendar, as reported in the {http://sabredav.org/ns}sync-token
+     * property This is * needed here too, to ensure the operation is atomic.
+     *
+     * If the $syncToken argument is specified as null, this is an initial
+     * sync, and all members should be reported.
+     *
+     * The modified property is an array of nodenames that have changed since
+     * the last token.
+     *
+     * The deleted property is an array with nodenames, that have been deleted
+     * from collection.
+     *
+     * The $syncLevel argument is basically the 'depth' of the report. If it's
+     * 1, you only have to report changes that happened only directly in
+     * immediate descendants. If it's 2, it should also include changes from
+     * the nodes below the child collections. (grandchildren)
+     *
+     * The $limit argument allows a client to specify how many results should
+     * be returned at most. If the limit is not specified, it should be treated
+     * as infinite.
+     *
+     * If the limit (infinite or not) is higher than you're willing to return,
+     * you should throw a Sabre\DAV\Exception\TooMuchMatches() exception.
+     *
+     * If the syncToken is expired (due to data cleanup) or unknown, you must
+     * return null.
+     *
+     * The limit is 'suggestive'. You are free to ignore it.
+     *
+     * @param string $calendarId
+     * @param string $syncToken
+     * @param int $syncLevel
+     * @param int $limit
+     * @param int $calendarType
+     * @return array
+     */
+    function getChangesForCalendar($calendarId, $syncToken, $syncLevel, $limit = null, $calendarType=self::CALENDAR_TYPE_CALENDAR) {
+        // Current synctoken
+        $stmt = $this->db->prepare('SELECT `synctoken` FROM `*PREFIX*calendars` WHERE `id` = ?');
+        $stmt->execute([ $calendarId ]);
+        $currentToken = $stmt->fetchColumn(0);
+
+        if (is_null($currentToken)) {
+            return null;
+        }
+
+        $result = [
+            'syncToken' => $currentToken,
+            'added'     => [],
+            'modified'  => [],
+            'deleted'   => [],
+        ];
+
+        if ($syncToken) {
+
+            $query = "SELECT `uri`, `operation` FROM `*PREFIX*calendarchanges` WHERE `synctoken` >= ? AND `synctoken` < ? AND `calendarid` = ? AND `calendartype` = ? ORDER BY `synctoken`";
+            if ($limit>0) {
+                $query.= " LIMIT " . (int)$limit;
+            }
+
+            // Fetching all changes
+            $stmt = $this->db->prepare($query);
+            $stmt->execute([$syncToken, $currentToken, $calendarId, $calendarType]);
+
+            $changes = [];
+
+            // This loop ensures that any duplicates are overwritten, only the
+            // last change on a node is relevant.
+            while($row = $stmt->fetch(\PDO::FETCH_ASSOC)) {
+
+                $changes[$row['uri']] = $row['operation'];
+
+            }
+
+            foreach($changes as $uri => $operation) {
+
+                switch($operation) {
+                    case 1 :
+                        $result['added'][] = $uri;
+                        break;
+                    case 2 :
+                        $result['modified'][] = $uri;
+                        break;
+                    case 3 :
+                        $result['deleted'][] = $uri;
+                        break;
+                }
+
+            }
+        } else {
+            // No synctoken supplied, this is the initial sync.
+            $query = "SELECT `uri` FROM `*PREFIX*calendarobjects` WHERE `calendarid` = ? AND `calendartype` = ?";
+            $stmt = $this->db->prepare($query);
+            $stmt->execute([$calendarId, $calendarType]);
+
+            $result['added'] = $stmt->fetchAll(\PDO::FETCH_COLUMN);
+        }
+        return $result;
+
+    }
+
+    /**
+     * Returns a list of subscriptions for a principal.
+     *
+     * Every subscription is an array with the following keys:
+     *  * id, a unique id that will be used by other functions to modify the
+     *    subscription. This can be the same as the uri or a database key.
+     *  * uri. This is just the 'base uri' or 'filename' of the subscription.
+     *  * principaluri. The owner of the subscription. Almost always the same as
+     *    principalUri passed to this method.
+     *
+     * Furthermore, all the subscription info must be returned too:
+     *
+     * 1. {DAV:}displayname
+     * 2. {http://apple.com/ns/ical/}refreshrate
+     * 3. {http://calendarserver.org/ns/}subscribed-strip-todos (omit if todos
+     *    should not be stripped).
+     * 4. {http://calendarserver.org/ns/}subscribed-strip-alarms (omit if alarms
+     *    should not be stripped).
+     * 5. {http://calendarserver.org/ns/}subscribed-strip-attachments (omit if
+     *    attachments should not be stripped).
+     * 6. {http://calendarserver.org/ns/}source (Must be a
+     *     Sabre\DAV\Property\Href).
+     * 7. {http://apple.com/ns/ical/}calendar-color
+     * 8. {http://apple.com/ns/ical/}calendar-order
+     * 9. {urn:ietf:params:xml:ns:caldav}supported-calendar-component-set
+     *    (should just be an instance of
+     *    Sabre\CalDAV\Property\SupportedCalendarComponentSet, with a bunch of
+     *    default components).
+     *
+     * @param string $principalUri
+     * @return array
+     */
+    function getSubscriptionsForUser($principalUri) {
+        $fields = array_values($this->subscriptionPropertyMap);
+        $fields[] = 'id';
+        $fields[] = 'uri';
+        $fields[] = 'source';
+        $fields[] = 'principaluri';
+        $fields[] = 'lastmodified';
+        $fields[] = 'synctoken';
+
+        $query = $this->db->getQueryBuilder();
+        $query->select($fields)
+            ->from('calendarsubscriptions')
+            ->where($query->expr()->eq('principaluri', $query->createNamedParameter($principalUri)))
+            ->orderBy('calendarorder', 'asc');
+        $stmt =$query->execute();
+
+        $subscriptions = [];
+        while($row = $stmt->fetch(\PDO::FETCH_ASSOC)) {
+
+            $subscription = [
+                'id'           => $row['id'],
+                'uri'          => $row['uri'],
+                'principaluri' => $row['principaluri'],
+                'source'       => $row['source'],
+                'lastmodified' => $row['lastmodified'],
+
+                '{' . Plugin::NS_CALDAV . '}supported-calendar-component-set' => new SupportedCalendarComponentSet(['VTODO', 'VEVENT']),
+                '{http://sabredav.org/ns}sync-token' => $row['synctoken']?$row['synctoken']:'0',
+            ];
+
+            foreach($this->subscriptionPropertyMap as $xmlName=>$dbName) {
+                if (!is_null($row[$dbName])) {
+                    $subscription[$xmlName] = $row[$dbName];
+                }
+            }
+
+            $subscriptions[] = $subscription;
+
+        }
+
+        return $subscriptions;
+    }
+
+    /**
+     * Creates a new subscription for a principal.
+     *
+     * If the creation was a success, an id must be returned that can be used to reference
+     * this subscription in other methods, such as updateSubscription.
+     *
+     * @param string $principalUri
+     * @param string $uri
+     * @param array $properties
+     * @return mixed
+     */
+    function createSubscription($principalUri, $uri, array $properties) {
+
+        if (!isset($properties['{http://calendarserver.org/ns/}source'])) {
+            throw new Forbidden('The {http://calendarserver.org/ns/}source property is required when creating subscriptions');
+        }
+
+        $values = [
+            'principaluri' => $principalUri,
+            'uri'          => $uri,
+            'source'       => $properties['{http://calendarserver.org/ns/}source']->getHref(),
+            'lastmodified' => time(),
+        ];
+
+        $propertiesBoolean = ['striptodos', 'stripalarms', 'stripattachments'];
+
+        foreach($this->subscriptionPropertyMap as $xmlName=>$dbName) {
+            if (array_key_exists($xmlName, $properties)) {
+                    $values[$dbName] = $properties[$xmlName];
+                    if (in_array($dbName, $propertiesBoolean)) {
+                        $values[$dbName] = true;
+                }
+            }
+        }
+
+        $valuesToInsert = [];
+
+        $query = $this->db->getQueryBuilder();
+
+        foreach (array_keys($values) as $name) {
+            $valuesToInsert[$name] = $query->createNamedParameter($values[$name]);
+        }
+
+        $query->insert('calendarsubscriptions')
+            ->values($valuesToInsert)
+            ->execute();
+
+        $subscriptionId = $this->db->lastInsertId('*PREFIX*calendarsubscriptions');
+
+        $this->dispatcher->dispatch('\OCA\DAV\CalDAV\CalDavBackend::createSubscription', new GenericEvent(
+            '\OCA\DAV\CalDAV\CalDavBackend::createSubscription',
+            [
+                'subscriptionId' => $subscriptionId,
+                'subscriptionData' => $this->getSubscriptionById($subscriptionId),
+            ]));
+
+        return $subscriptionId;
+    }
+
+    /**
+     * Updates a subscription
+     *
+     * The list of mutations is stored in a Sabre\DAV\PropPatch object.
+     * To do the actual updates, you must tell this object which properties
+     * you're going to process with the handle() method.
+     *
+     * Calling the handle method is like telling the PropPatch object "I
+     * promise I can handle updating this property".
+     *
+     * Read the PropPatch documentation for more info and examples.
+     *
+     * @param mixed $subscriptionId
+     * @param PropPatch $propPatch
+     * @return void
+     */
+    function updateSubscription($subscriptionId, PropPatch $propPatch) {
+        $supportedProperties = array_keys($this->subscriptionPropertyMap);
+        $supportedProperties[] = '{http://calendarserver.org/ns/}source';
+
+        /**
+         * @suppress SqlInjectionChecker
+         */
+        $propPatch->handle($supportedProperties, function($mutations) use ($subscriptionId) {
+
+            $newValues = [];
+
+            foreach($mutations as $propertyName=>$propertyValue) {
+                if ($propertyName === '{http://calendarserver.org/ns/}source') {
+                    $newValues['source'] = $propertyValue->getHref();
+                } else {
+                    $fieldName = $this->subscriptionPropertyMap[$propertyName];
+                    $newValues[$fieldName] = $propertyValue;
+                }
+            }
+
+            $query = $this->db->getQueryBuilder();
+            $query->update('calendarsubscriptions')
+                ->set('lastmodified', $query->createNamedParameter(time()));
+            foreach($newValues as $fieldName=>$value) {
+                $query->set($fieldName, $query->createNamedParameter($value));
+            }
+            $query->where($query->expr()->eq('id', $query->createNamedParameter($subscriptionId)))
+                ->execute();
+
+            $this->dispatcher->dispatch('\OCA\DAV\CalDAV\CalDavBackend::updateSubscription', new GenericEvent(
+                '\OCA\DAV\CalDAV\CalDavBackend::updateSubscription',
+                [
+                    'subscriptionId' => $subscriptionId,
+                    'subscriptionData' => $this->getSubscriptionById($subscriptionId),
+                    'propertyMutations' => $mutations,
+                ]));
+
+            return true;
+
+        });
+    }
+
+    /**
+     * Deletes a subscription.
+     *
+     * @param mixed $subscriptionId
+     * @return void
+     */
+    function deleteSubscription($subscriptionId) {
+        $this->dispatcher->dispatch('\OCA\DAV\CalDAV\CalDavBackend::deleteSubscription', new GenericEvent(
+            '\OCA\DAV\CalDAV\CalDavBackend::deleteSubscription',
+            [
+                'subscriptionId' => $subscriptionId,
+                'subscriptionData' => $this->getSubscriptionById($subscriptionId),
+            ]));
+
+        $query = $this->db->getQueryBuilder();
+        $query->delete('calendarsubscriptions')
+            ->where($query->expr()->eq('id', $query->createNamedParameter($subscriptionId)))
+            ->execute();
+
+        $query = $this->db->getQueryBuilder();
+        $query->delete('calendarobjects')
+            ->where($query->expr()->eq('calendarid', $query->createNamedParameter($subscriptionId)))
+            ->andWhere($query->expr()->eq('calendartype', $query->createNamedParameter(self::CALENDAR_TYPE_SUBSCRIPTION)))
+            ->execute();
+
+        $query->delete('calendarchanges')
+            ->where($query->expr()->eq('calendarid', $query->createNamedParameter($subscriptionId)))
+            ->andWhere($query->expr()->eq('calendartype', $query->createNamedParameter(self::CALENDAR_TYPE_SUBSCRIPTION)))
+            ->execute();
+
+        $query->delete($this->dbObjectPropertiesTable)
+            ->where($query->expr()->eq('calendarid', $query->createNamedParameter($subscriptionId)))
+            ->andWhere($query->expr()->eq('calendartype', $query->createNamedParameter(self::CALENDAR_TYPE_SUBSCRIPTION)))
+            ->execute();
+    }
+
+    /**
+     * Returns a single scheduling object for the inbox collection.
+     *
+     * The returned array should contain the following elements:
+     *   * uri - A unique basename for the object. This will be used to
+     *           construct a full uri.
+     *   * calendardata - The iCalendar object
+     *   * lastmodified - The last modification date. Can be an int for a unix
+     *                    timestamp, or a PHP DateTime object.
+     *   * etag - A unique token that must change if the object changed.
+     *   * size - The size of the object, in bytes.
+     *
+     * @param string $principalUri
+     * @param string $objectUri
+     * @return array
+     */
+    function getSchedulingObject($principalUri, $objectUri) {
+        $query = $this->db->getQueryBuilder();
+        $stmt = $query->select(['uri', 'calendardata', 'lastmodified', 'etag', 'size'])
+            ->from('schedulingobjects')
+            ->where($query->expr()->eq('principaluri', $query->createNamedParameter($principalUri)))
+            ->andWhere($query->expr()->eq('uri', $query->createNamedParameter($objectUri)))
+            ->execute();
+
+        $row = $stmt->fetch(\PDO::FETCH_ASSOC);
+
+        if(!$row) {
+            return null;
+        }
+
+        return [
+                'uri'          => $row['uri'],
+                'calendardata' => $row['calendardata'],
+                'lastmodified' => $row['lastmodified'],
+                'etag'         => '"' . $row['etag'] . '"',
+                'size'         => (int)$row['size'],
+        ];
+    }
+
+    /**
+     * Returns all scheduling objects for the inbox collection.
+     *
+     * These objects should be returned as an array. Every item in the array
+     * should follow the same structure as returned from getSchedulingObject.
+     *
+     * The main difference is that 'calendardata' is optional.
+     *
+     * @param string $principalUri
+     * @return array
+     */
+    function getSchedulingObjects($principalUri) {
+        $query = $this->db->getQueryBuilder();
+        $stmt = $query->select(['uri', 'calendardata', 'lastmodified', 'etag', 'size'])
+                ->from('schedulingobjects')
+                ->where($query->expr()->eq('principaluri', $query->createNamedParameter($principalUri)))
+                ->execute();
+
+        $result = [];
+        foreach($stmt->fetchAll(\PDO::FETCH_ASSOC) as $row) {
+            $result[] = [
+                    'calendardata' => $row['calendardata'],
+                    'uri'          => $row['uri'],
+                    'lastmodified' => $row['lastmodified'],
+                    'etag'         => '"' . $row['etag'] . '"',
+                    'size'         => (int)$row['size'],
+            ];
+        }
+
+        return $result;
+    }
+
+    /**
+     * Deletes a scheduling object from the inbox collection.
+     *
+     * @param string $principalUri
+     * @param string $objectUri
+     * @return void
+     */
+    function deleteSchedulingObject($principalUri, $objectUri) {
+        $query = $this->db->getQueryBuilder();
+        $query->delete('schedulingobjects')
+                ->where($query->expr()->eq('principaluri', $query->createNamedParameter($principalUri)))
+                ->andWhere($query->expr()->eq('uri', $query->createNamedParameter($objectUri)))
+                ->execute();
+    }
+
+    /**
+     * Creates a new scheduling object. This should land in a users' inbox.
+     *
+     * @param string $principalUri
+     * @param string $objectUri
+     * @param string $objectData
+     * @return void
+     */
+    function createSchedulingObject($principalUri, $objectUri, $objectData) {
+        $query = $this->db->getQueryBuilder();
+        $query->insert('schedulingobjects')
+            ->values([
+                'principaluri' => $query->createNamedParameter($principalUri),
+                'calendardata' => $query->createNamedParameter($objectData, IQueryBuilder::PARAM_LOB),
+                'uri' => $query->createNamedParameter($objectUri),
+                'lastmodified' => $query->createNamedParameter(time()),
+                'etag' => $query->createNamedParameter(md5($objectData)),
+                'size' => $query->createNamedParameter(strlen($objectData))
+            ])
+            ->execute();
+    }
+
+    /**
+     * Adds a change record to the calendarchanges table.
+     *
+     * @param mixed $calendarId
+     * @param string $objectUri
+     * @param int $operation 1 = add, 2 = modify, 3 = delete.
+     * @param int $calendarType
+     * @return void
+     */
+    protected function addChange($calendarId, $objectUri, $operation, $calendarType=self::CALENDAR_TYPE_CALENDAR) {
+        $table = $calendarType === self::CALENDAR_TYPE_CALENDAR ? 'calendars': 'calendarsubscriptions';
+
+        $query = $this->db->getQueryBuilder();
+        $query->select('synctoken')
+            ->from($table)
+            ->where($query->expr()->eq('id', $query->createNamedParameter($calendarId)));
+        $syncToken = (int)$query->execute()->fetchColumn();
+
+        $query = $this->db->getQueryBuilder();
+        $query->insert('calendarchanges')
+            ->values([
+                'uri' => $query->createNamedParameter($objectUri),
+                'synctoken' => $query->createNamedParameter($syncToken),
+                'calendarid' => $query->createNamedParameter($calendarId),
+                'operation' => $query->createNamedParameter($operation),
+                'calendartype' => $query->createNamedParameter($calendarType),
+            ])
+            ->execute();
+
+        $stmt = $this->db->prepare("UPDATE `*PREFIX*$table` SET `synctoken` = `synctoken` + 1 WHERE `id` = ?");
+        $stmt->execute([
+            $calendarId
+        ]);
+
+    }
+
+    /**
+     * Parses some information from calendar objects, used for optimized
+     * calendar-queries.
+     *
+     * Returns an array with the following keys:
+     *   * etag - An md5 checksum of the object without the quotes.
+     *   * size - Size of the object in bytes
+     *   * componentType - VEVENT, VTODO or VJOURNAL
+     *   * firstOccurence
+     *   * lastOccurence
+     *   * uid - value of the UID property
+     *
+     * @param string $calendarData
+     * @return array
+     */
+    public function getDenormalizedData($calendarData) {
+
+        $vObject = Reader::read($calendarData);
+        $componentType = null;
+        $component = null;
+        $firstOccurrence = null;
+        $lastOccurrence = null;
+        $uid = null;
+        $classification = self::CLASSIFICATION_PUBLIC;
+        foreach($vObject->getComponents() as $component) {
+            if ($component->name!=='VTIMEZONE') {
+                $componentType = $component->name;
+                $uid = (string)$component->UID;
+                break;
+            }
+        }
+        if (!$componentType) {
+            throw new \Sabre\DAV\Exception\BadRequest('Calendar objects must have a VJOURNAL, VEVENT or VTODO component');
+        }
+        if ($componentType === 'VEVENT' && $component->DTSTART) {
+            $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();
+                    $endDate->add(DateTimeParser::parse($component->DURATION->getValue()));
+                    $lastOccurrence = $endDate->getTimeStamp();
+                } elseif (!$component->DTSTART->hasTime()) {
+                    $endDate = clone $component->DTSTART->getDateTime();
+                    $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 = $end->getTimestamp();
+                }
+
+            }
+        }
+
+        if ($component->CLASS) {
+            $classification = CalDavBackend::CLASSIFICATION_PRIVATE;
+            switch ($component->CLASS->getValue()) {
+                case 'PUBLIC':
+                    $classification = CalDavBackend::CLASSIFICATION_PUBLIC;
+                    break;
+                case 'CONFIDENTIAL':
+                    $classification = CalDavBackend::CLASSIFICATION_CONFIDENTIAL;
+                    break;
+            }
+        }
+        return [
+            'etag' => md5($calendarData),
+            'size' => strlen($calendarData),
+            'componentType' => $componentType,
+            'firstOccurence' => is_null($firstOccurrence) ? null : max(0, $firstOccurrence),
+            'lastOccurence'  => $lastOccurrence,
+            'uid' => $uid,
+            'classification' => $classification
+        ];
+
+    }
+
+    /**
+     * @param $cardData
+     * @return bool|string
+     */
+    private function readBlob($cardData) {
+        if (is_resource($cardData)) {
+            return stream_get_contents($cardData);
+        }
+
+        return $cardData;
+    }
+
+    /**
+     * @param IShareable $shareable
+     * @param array $add
+     * @param array $remove
+     */
+    public function updateShares($shareable, $add, $remove) {
+        $calendarId = $shareable->getResourceId();
+        $this->dispatcher->dispatch('\OCA\DAV\CalDAV\CalDavBackend::updateShares', new GenericEvent(
+            '\OCA\DAV\CalDAV\CalDavBackend::updateShares',
+            [
+                'calendarId' => $calendarId,
+                'calendarData' => $this->getCalendarById($calendarId),
+                'shares' => $this->getShares($calendarId),
+                'add' => $add,
+                'remove' => $remove,
+            ]));
+        $this->calendarSharingBackend->updateShares($shareable, $add, $remove);
+    }
+
+    /**
+     * @param int $resourceId
+     * @param int $calendarType
+     * @return array
+     */
+    public function getShares($resourceId, $calendarType=self::CALENDAR_TYPE_CALENDAR) {
+        return $this->calendarSharingBackend->getShares($resourceId);
+    }
+
+    /**
+     * @param boolean $value
+     * @param \OCA\DAV\CalDAV\Calendar $calendar
+     * @return string|null
+     */
+    public function setPublishStatus($value, $calendar) {
+
+        $calendarId = $calendar->getResourceId();
+        $this->dispatcher->dispatch('\OCA\DAV\CalDAV\CalDavBackend::publishCalendar', new GenericEvent(
+            '\OCA\DAV\CalDAV\CalDavBackend::updateShares',
+            [
+                'calendarId' => $calendarId,
+                'calendarData' => $this->getCalendarById($calendarId),
+                'public' => $value,
+            ]));
+
+        $query = $this->db->getQueryBuilder();
+        if ($value) {
+            $publicUri = $this->random->generate(16, ISecureRandom::CHAR_HUMAN_READABLE);
+            $query->insert('dav_shares')
+                ->values([
+                    'principaluri' => $query->createNamedParameter($calendar->getPrincipalURI()),
+                    'type' => $query->createNamedParameter('calendar'),
+                    'access' => $query->createNamedParameter(self::ACCESS_PUBLIC),
+                    'resourceid' => $query->createNamedParameter($calendar->getResourceId()),
+                    'publicuri' => $query->createNamedParameter($publicUri)
+                ]);
+            $query->execute();
+            return $publicUri;
+        }
+        $query->delete('dav_shares')
+            ->where($query->expr()->eq('resourceid', $query->createNamedParameter($calendar->getResourceId())))
+            ->andWhere($query->expr()->eq('access', $query->createNamedParameter(self::ACCESS_PUBLIC)));
+        $query->execute();
+        return null;
+    }
+
+    /**
+     * @param \OCA\DAV\CalDAV\Calendar $calendar
+     * @return mixed
+     */
+    public function getPublishStatus($calendar) {
+        $query = $this->db->getQueryBuilder();
+        $result = $query->select('publicuri')
+            ->from('dav_shares')
+            ->where($query->expr()->eq('resourceid', $query->createNamedParameter($calendar->getResourceId())))
+            ->andWhere($query->expr()->eq('access', $query->createNamedParameter(self::ACCESS_PUBLIC)))
+            ->execute();
+
+        $row = $result->fetch();
+        $result->closeCursor();
+        return $row ? reset($row) : false;
+    }
+
+    /**
+     * @param int $resourceId
+     * @param array $acl
+     * @return array
+     */
+    public function applyShareAcl($resourceId, $acl) {
+        return $this->calendarSharingBackend->applyShareAcl($resourceId, $acl);
+    }
+
+
+
+    /**
+     * update properties table
+     *
+     * @param int $calendarId
+     * @param string $objectUri
+     * @param string $calendarData
+     * @param int $calendarType
+     */
+    public function updateProperties($calendarId, $objectUri, $calendarData, $calendarType=self::CALENDAR_TYPE_CALENDAR) {
+        $objectId = $this->getCalendarObjectId($calendarId, $objectUri, $calendarType);
+
+        try {
+            $vCalendar = $this->readCalendarData($calendarData);
+        } catch (\Exception $ex) {
+            return;
+        }
+
+        $this->purgeProperties($calendarId, $objectId);
+
+        $query = $this->db->getQueryBuilder();
+        $query->insert($this->dbObjectPropertiesTable)
+            ->values(
+                [
+                    'calendarid' => $query->createNamedParameter($calendarId),
+                    'calendartype' => $query->createNamedParameter($calendarType),
+                    'objectid' => $query->createNamedParameter($objectId),
+                    'name' => $query->createParameter('name'),
+                    'parameter' => $query->createParameter('parameter'),
+                    'value' => $query->createParameter('value'),
+                ]
+            );
+
+        $indexComponents = ['VEVENT', 'VJOURNAL', 'VTODO'];
+        foreach ($vCalendar->getComponents() as $component) {
+            if (!in_array($component->name, $indexComponents)) {
+                continue;
+            }
+
+            foreach ($component->children() as $property) {
+                if (in_array($property->name, self::$indexProperties)) {
+                    $value = $property->getValue();
+                    // is this a shitty db?
+                    if (!$this->db->supports4ByteText()) {
+                        $value = preg_replace('/[\x{10000}-\x{10FFFF}]/u', "\xEF\xBF\xBD", $value);
+                    }
+                    $value = mb_substr($value, 0, 254);
+
+                    $query->setParameter('name', $property->name);
+                    $query->setParameter('parameter', null);
+                    $query->setParameter('value', $value);
+                    $query->execute();
+                }
+
+                if (array_key_exists($property->name, self::$indexParameters)) {
+                    $parameters = $property->parameters();
+                    $indexedParametersForProperty = self::$indexParameters[$property->name];
+
+                    foreach ($parameters as $key => $value) {
+                        if (in_array($key, $indexedParametersForProperty)) {
+                            // is this a shitty db?
+                            if ($this->db->supports4ByteText()) {
+                                $value = preg_replace('/[\x{10000}-\x{10FFFF}]/u', "\xEF\xBF\xBD", $value);
+                            }
+
+                            $query->setParameter('name', $property->name);
+                            $query->setParameter('parameter', mb_substr($key, 0, 254));
+                            $query->setParameter('value', mb_substr($value, 0, 254));
+                            $query->execute();
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+    /**
+     * deletes all birthday calendars
+     */
+    public function deleteAllBirthdayCalendars() {
+        $query = $this->db->getQueryBuilder();
+        $result = $query->select(['id'])->from('calendars')
+            ->where($query->expr()->eq('uri', $query->createNamedParameter(BirthdayService::BIRTHDAY_CALENDAR_URI)))
+            ->execute();
+
+        $ids = $result->fetchAll();
+        foreach($ids as $id) {
+            $this->deleteCalendar($id['id']);
+        }
+    }
+
+    /**
+     * @param $subscriptionId
+     */
+    public function purgeAllCachedEventsForSubscription($subscriptionId) {
+        $query = $this->db->getQueryBuilder();
+        $query->select('uri')
+            ->from('calendarobjects')
+            ->where($query->expr()->eq('calendarid', $query->createNamedParameter($subscriptionId)))
+            ->andWhere($query->expr()->eq('calendartype', $query->createNamedParameter(self::CALENDAR_TYPE_SUBSCRIPTION)));
+        $stmt = $query->execute();
+
+        $uris = [];
+        foreach($stmt->fetchAll(\PDO::FETCH_ASSOC) as $row) {
+            $uris[] = $row['uri'];
+        }
+        $stmt->closeCursor();
+
+        $query = $this->db->getQueryBuilder();
+        $query->delete('calendarobjects')
+            ->where($query->expr()->eq('calendarid', $query->createNamedParameter($subscriptionId)))
+            ->andWhere($query->expr()->eq('calendartype', $query->createNamedParameter(self::CALENDAR_TYPE_SUBSCRIPTION)))
+            ->execute();
+
+        $query->delete('calendarchanges')
+            ->where($query->expr()->eq('calendarid', $query->createNamedParameter($subscriptionId)))
+            ->andWhere($query->expr()->eq('calendartype', $query->createNamedParameter(self::CALENDAR_TYPE_SUBSCRIPTION)))
+            ->execute();
+
+        $query->delete($this->dbObjectPropertiesTable)
+            ->where($query->expr()->eq('calendarid', $query->createNamedParameter($subscriptionId)))
+            ->andWhere($query->expr()->eq('calendartype', $query->createNamedParameter(self::CALENDAR_TYPE_SUBSCRIPTION)))
+            ->execute();
+
+        foreach($uris as $uri) {
+            $this->addChange($subscriptionId, $uri, 3, self::CALENDAR_TYPE_SUBSCRIPTION);
+        }
+    }
+
+    /**
+     * Move a calendar from one user to another
+     *
+     * @param string $uriName
+     * @param string $uriOrigin
+     * @param string $uriDestination
+     */
+    public function moveCalendar($uriName, $uriOrigin, $uriDestination)
+    {
+        $query = $this->db->getQueryBuilder();
+        $query->update('calendars')
+            ->set('principaluri', $query->createNamedParameter($uriDestination))
+            ->where($query->expr()->eq('principaluri', $query->createNamedParameter($uriOrigin)))
+            ->andWhere($query->expr()->eq('uri', $query->createNamedParameter($uriName)))
+            ->execute();
+    }
+
+    /**
+     * read VCalendar data into a VCalendar object
+     *
+     * @param string $objectData
+     * @return VCalendar
+     */
+    protected function readCalendarData($objectData) {
+        return Reader::read($objectData);
+    }
+
+    /**
+     * delete all properties from a given calendar object
+     *
+     * @param int $calendarId
+     * @param int $objectId
+     */
+    protected function purgeProperties($calendarId, $objectId) {
+        $query = $this->db->getQueryBuilder();
+        $query->delete($this->dbObjectPropertiesTable)
+            ->where($query->expr()->eq('objectid', $query->createNamedParameter($objectId)))
+            ->andWhere($query->expr()->eq('calendarid', $query->createNamedParameter($calendarId)));
+        $query->execute();
+    }
+
+    /**
+     * get ID from a given calendar object
+     *
+     * @param int $calendarId
+     * @param string $uri
+     * @param int $calendarType
+     * @return int
+     */
+    protected function getCalendarObjectId($calendarId, $uri, $calendarType):int {
+        $query = $this->db->getQueryBuilder();
+        $query->select('id')
+            ->from('calendarobjects')
+            ->where($query->expr()->eq('uri', $query->createNamedParameter($uri)))
+            ->andWhere($query->expr()->eq('calendarid', $query->createNamedParameter($calendarId)))
+            ->andWhere($query->expr()->eq('calendartype', $query->createNamedParameter($calendarType)));
+
+        $result = $query->execute();
+        $objectIds = $result->fetch();
+        $result->closeCursor();
+
+        if (!isset($objectIds['id'])) {
+            throw new \InvalidArgumentException('Calendarobject does not exists: ' . $uri);
+        }
+
+        return (int)$objectIds['id'];
+    }
+
+    /**
+     * return legacy endpoint principal name to new principal name
+     *
+     * @param $principalUri
+     * @param $toV2
+     * @return string
+     */
+    private function convertPrincipal($principalUri, $toV2) {
+        if ($this->principalBackend->getPrincipalPrefix() === 'principals') {
+            list(, $name) = Uri\split($principalUri);
+            if ($toV2 === true) {
+                return "principals/users/$name";
+            }
+            return "principals/$name";
+        }
+        return $principalUri;
+    }
+
+    /**
+     * adds information about an owner to the calendar data
+     *
+     * @param $calendarInfo
+     */
+    private function addOwnerPrincipal(&$calendarInfo) {
+        $ownerPrincipalKey = '{' . \OCA\DAV\DAV\Sharing\Plugin::NS_OWNCLOUD . '}owner-principal';
+        $displaynameKey = '{' . \OCA\DAV\DAV\Sharing\Plugin::NS_NEXTCLOUD . '}owner-displayname';
+        if (isset($calendarInfo[$ownerPrincipalKey])) {
+            $uri = $calendarInfo[$ownerPrincipalKey];
+        } else {
+            $uri = $calendarInfo['principaluri'];
+        }
+
+        $principalInformation = $this->principalBackend->getPrincipalByPath($uri);
+        if (isset($principalInformation['{DAV:}displayname'])) {
+            $calendarInfo[$displaynameKey] = $principalInformation['{DAV:}displayname'];
+        }
+    }
 }

apps/dav/lib/CalDAV/Schedule/IMipPlugin.php

Indentation +537 added lines, -537 removed lines

@@ -67,205 +67,205 @@ 
  */
 class IMipPlugin extends SabreIMipPlugin {
 
-	/** @var string */
-	private $userId;
-
-	/** @var IConfig */
-	private $config;
-
-	/** @var IMailer */
-	private $mailer;
-
-	/** @var ILogger */
-	private $logger;
-
-	/** @var ITimeFactory */
-	private $timeFactory;
-
-	/** @var L10NFactory */
-	private $l10nFactory;
-
-	/** @var IURLGenerator */
-	private $urlGenerator;
-
-	/** @var ISecureRandom */
-	private $random;
-
-	/** @var IDBConnection */
-	private $db;
-
-	/** @var Defaults */
-	private $defaults;
-
-	/** @var IUserManager */
-	private $userManager;
-
-	const MAX_DATE = '2038-01-01';
-
-	const METHOD_REQUEST = 'request';
-	const METHOD_REPLY = 'reply';
-	const METHOD_CANCEL = 'cancel';
-
-	/**
-	 * @param IConfig $config
-	 * @param IMailer $mailer
-	 * @param ILogger $logger
-	 * @param ITimeFactory $timeFactory
-	 * @param L10NFactory $l10nFactory
-	 * @param IUrlGenerator $urlGenerator
-	 * @param Defaults $defaults
-	 * @param ISecureRandom $random
-	 * @param IDBConnection $db
-	 * @param string $userId
-	 */
-	public function __construct(IConfig $config, IMailer $mailer, ILogger $logger,
-								ITimeFactory $timeFactory, L10NFactory $l10nFactory,
-								IURLGenerator $urlGenerator, Defaults $defaults,
-								ISecureRandom $random, IDBConnection $db, IUserManager $userManager,
-								$userId) {
-		parent::__construct('');
-		$this->userId = $userId;
-		$this->config = $config;
-		$this->mailer = $mailer;
-		$this->logger = $logger;
-		$this->timeFactory = $timeFactory;
-		$this->l10nFactory = $l10nFactory;
-		$this->urlGenerator = $urlGenerator;
-		$this->random = $random;
-		$this->db = $db;
-		$this->defaults = $defaults;
-		$this->userManager = $userManager;
-	}
-
-	/**
-	 * Event handler for the 'schedule' event.
-	 *
-	 * @param Message $iTipMessage
-	 * @return void
-	 */
-	public function schedule(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;
-		}
-
-		// don't send out mails for events that already took place
-		$lastOccurrence = $this->getLastOccurrence($iTipMessage->message);
-		$currentTime = $this->timeFactory->getTime();
-		if ($lastOccurrence < $currentTime) {
-			return;
-		}
-
-		// Strip off mailto:
-		$sender = substr($iTipMessage->sender, 7);
-		$recipient = substr($iTipMessage->recipient, 7);
-
-		$senderName = $iTipMessage->senderName ?: null;
-		$recipientName = $iTipMessage->recipientName ?: null;
-
-		if ($senderName === null || empty(trim($senderName))) {
-			$user = $this->userManager->get($this->userId);
-			if ($user) {
-				// getDisplayName automatically uses the uid
-				// if no display-name is set
-				$senderName = $user->getDisplayName();
-			}
-		}
-
-		/** @var VEvent $vevent */
-		$vevent = $iTipMessage->message->VEVENT;
-
-		$attendee = $this->getCurrentAttendee($iTipMessage);
-		$defaultLang = $this->l10nFactory->findLanguage();
-		$lang = $this->getAttendeeLangOrDefault($defaultLang, $attendee);
-		$l10n = $this->l10nFactory->get('dav', $lang);
-
-		$meetingAttendeeName = $recipientName ?: $recipient;
-		$meetingInviteeName = $senderName ?: $sender;
-
-		$meetingTitle = $vevent->SUMMARY;
-		$meetingDescription = $vevent->DESCRIPTION;
-
-		$start = $vevent->DTSTART;
-		if (isset($vevent->DTEND)) {
-			$end = $vevent->DTEND;
-		} elseif (isset($vevent->DURATION)) {
-			$isFloating = $vevent->DTSTART->isFloating();
-			$end = clone $vevent->DTSTART;
-			$endDateTime = $end->getDateTime();
-			$endDateTime = $endDateTime->add(DateTimeParser::parse($vevent->DURATION->getValue()));
-			$end->setDateTime($endDateTime, $isFloating);
-		} elseif (!$vevent->DTSTART->hasTime()) {
-			$isFloating = $vevent->DTSTART->isFloating();
-			$end = clone $vevent->DTSTART;
-			$endDateTime = $end->getDateTime();
-			$endDateTime = $endDateTime->modify('+1 day');
-			$end->setDateTime($endDateTime, $isFloating);
-		} else {
-			$end = clone $vevent->DTSTART;
-		}
-
-		$meetingWhen = $this->generateWhenString($l10n, $start, $end);
-
-		$meetingUrl = $vevent->URL;
-		$meetingLocation = $vevent->LOCATION;
-
-		$defaultVal = '--';
-
-		$method = self::METHOD_REQUEST;
-		switch (strtolower($iTipMessage->method)) {
-			case self::METHOD_REPLY:
-				$method = self::METHOD_REPLY;
-				break;
-			case self::METHOD_CANCEL:
-				$method = self::METHOD_CANCEL;
-				break;
-		}
-
-		$data = [
-			'attendee_name' => (string)$meetingAttendeeName ?: $defaultVal,
-			'invitee_name' => (string)$meetingInviteeName ?: $defaultVal,
-			'meeting_title' => (string)$meetingTitle ?: $defaultVal,
-			'meeting_description' => (string)$meetingDescription ?: $defaultVal,
-			'meeting_url' => (string)$meetingUrl ?: $defaultVal,
-		];
-
-		$fromEMail = \OCP\Util::getDefaultEmailAddress('invitations-noreply');
-		$fromName = $l10n->t('%1$s via %2$s', [$senderName, $this->defaults->getName()]);
-
-		$message = $this->mailer->createMessage()
-			->setFrom([$fromEMail => $fromName])
-			->setReplyTo([$sender => $senderName])
-			->setTo([$recipient => $recipientName]);
-
-		$template = $this->mailer->createEMailTemplate('dav.calendarInvite.' . $method, $data);
-		$template->addHeader();
-
-		$this->addSubjectAndHeading($template, $l10n, $method, $summary,
-			$meetingAttendeeName, $meetingInviteeName);
-		$this->addBulletList($template, $l10n, $meetingWhen, $meetingLocation,
-			$meetingDescription, $meetingUrl);
-
-
-		// Only add response buttons to invitation requests: Fix Issue #11230
-		if (($method == self::METHOD_REQUEST) && $this->getAttendeeRSVP($attendee)) {
-
-			/*
+    /** @var string */
+    private $userId;
+
+    /** @var IConfig */
+    private $config;
+
+    /** @var IMailer */
+    private $mailer;
+
+    /** @var ILogger */
+    private $logger;
+
+    /** @var ITimeFactory */
+    private $timeFactory;
+
+    /** @var L10NFactory */
+    private $l10nFactory;
+
+    /** @var IURLGenerator */
+    private $urlGenerator;
+
+    /** @var ISecureRandom */
+    private $random;
+
+    /** @var IDBConnection */
+    private $db;
+
+    /** @var Defaults */
+    private $defaults;
+
+    /** @var IUserManager */
+    private $userManager;
+
+    const MAX_DATE = '2038-01-01';
+
+    const METHOD_REQUEST = 'request';
+    const METHOD_REPLY = 'reply';
+    const METHOD_CANCEL = 'cancel';
+
+    /**
+     * @param IConfig $config
+     * @param IMailer $mailer
+     * @param ILogger $logger
+     * @param ITimeFactory $timeFactory
+     * @param L10NFactory $l10nFactory
+     * @param IUrlGenerator $urlGenerator
+     * @param Defaults $defaults
+     * @param ISecureRandom $random
+     * @param IDBConnection $db
+     * @param string $userId
+     */
+    public function __construct(IConfig $config, IMailer $mailer, ILogger $logger,
+                                ITimeFactory $timeFactory, L10NFactory $l10nFactory,
+                                IURLGenerator $urlGenerator, Defaults $defaults,
+                                ISecureRandom $random, IDBConnection $db, IUserManager $userManager,
+                                $userId) {
+        parent::__construct('');
+        $this->userId = $userId;
+        $this->config = $config;
+        $this->mailer = $mailer;
+        $this->logger = $logger;
+        $this->timeFactory = $timeFactory;
+        $this->l10nFactory = $l10nFactory;
+        $this->urlGenerator = $urlGenerator;
+        $this->random = $random;
+        $this->db = $db;
+        $this->defaults = $defaults;
+        $this->userManager = $userManager;
+    }
+
+    /**
+     * Event handler for the 'schedule' event.
+     *
+     * @param Message $iTipMessage
+     * @return void
+     */
+    public function schedule(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;
+        }
+
+        // don't send out mails for events that already took place
+        $lastOccurrence = $this->getLastOccurrence($iTipMessage->message);
+        $currentTime = $this->timeFactory->getTime();
+        if ($lastOccurrence < $currentTime) {
+            return;
+        }
+
+        // Strip off mailto:
+        $sender = substr($iTipMessage->sender, 7);
+        $recipient = substr($iTipMessage->recipient, 7);
+
+        $senderName = $iTipMessage->senderName ?: null;
+        $recipientName = $iTipMessage->recipientName ?: null;
+
+        if ($senderName === null || empty(trim($senderName))) {
+            $user = $this->userManager->get($this->userId);
+            if ($user) {
+                // getDisplayName automatically uses the uid
+                // if no display-name is set
+                $senderName = $user->getDisplayName();
+            }
+        }
+
+        /** @var VEvent $vevent */
+        $vevent = $iTipMessage->message->VEVENT;
+
+        $attendee = $this->getCurrentAttendee($iTipMessage);
+        $defaultLang = $this->l10nFactory->findLanguage();
+        $lang = $this->getAttendeeLangOrDefault($defaultLang, $attendee);
+        $l10n = $this->l10nFactory->get('dav', $lang);
+
+        $meetingAttendeeName = $recipientName ?: $recipient;
+        $meetingInviteeName = $senderName ?: $sender;
+
+        $meetingTitle = $vevent->SUMMARY;
+        $meetingDescription = $vevent->DESCRIPTION;
+
+        $start = $vevent->DTSTART;
+        if (isset($vevent->DTEND)) {
+            $end = $vevent->DTEND;
+        } elseif (isset($vevent->DURATION)) {
+            $isFloating = $vevent->DTSTART->isFloating();
+            $end = clone $vevent->DTSTART;
+            $endDateTime = $end->getDateTime();
+            $endDateTime = $endDateTime->add(DateTimeParser::parse($vevent->DURATION->getValue()));
+            $end->setDateTime($endDateTime, $isFloating);
+        } elseif (!$vevent->DTSTART->hasTime()) {
+            $isFloating = $vevent->DTSTART->isFloating();
+            $end = clone $vevent->DTSTART;
+            $endDateTime = $end->getDateTime();
+            $endDateTime = $endDateTime->modify('+1 day');
+            $end->setDateTime($endDateTime, $isFloating);
+        } else {
+            $end = clone $vevent->DTSTART;
+        }
+
+        $meetingWhen = $this->generateWhenString($l10n, $start, $end);
+
+        $meetingUrl = $vevent->URL;
+        $meetingLocation = $vevent->LOCATION;
+
+        $defaultVal = '--';
+
+        $method = self::METHOD_REQUEST;
+        switch (strtolower($iTipMessage->method)) {
+            case self::METHOD_REPLY:
+                $method = self::METHOD_REPLY;
+                break;
+            case self::METHOD_CANCEL:
+                $method = self::METHOD_CANCEL;
+                break;
+        }
+
+        $data = [
+            'attendee_name' => (string)$meetingAttendeeName ?: $defaultVal,
+            'invitee_name' => (string)$meetingInviteeName ?: $defaultVal,
+            'meeting_title' => (string)$meetingTitle ?: $defaultVal,
+            'meeting_description' => (string)$meetingDescription ?: $defaultVal,
+            'meeting_url' => (string)$meetingUrl ?: $defaultVal,
+        ];
+
+        $fromEMail = \OCP\Util::getDefaultEmailAddress('invitations-noreply');
+        $fromName = $l10n->t('%1$s via %2$s', [$senderName, $this->defaults->getName()]);
+
+        $message = $this->mailer->createMessage()
+            ->setFrom([$fromEMail => $fromName])
+            ->setReplyTo([$sender => $senderName])
+            ->setTo([$recipient => $recipientName]);
+
+        $template = $this->mailer->createEMailTemplate('dav.calendarInvite.' . $method, $data);
+        $template->addHeader();
+
+        $this->addSubjectAndHeading($template, $l10n, $method, $summary,
+            $meetingAttendeeName, $meetingInviteeName);
+        $this->addBulletList($template, $l10n, $meetingWhen, $meetingLocation,
+            $meetingDescription, $meetingUrl);
+
+
+        // Only add response buttons to invitation requests: Fix Issue #11230
+        if (($method == self::METHOD_REQUEST) && $this->getAttendeeRSVP($attendee)) {
+
+            /*
 			** Only offer invitation accept/reject buttons, which link back to the
 			** nextcloud server, to recipients who can access the nextcloud server via
 			** their internet/intranet.  Issue #12156
@@ -284,342 +284,342 @@ 
 			** To suppress URLs entirely, set invitation_link_recipients to boolean "no".
 			*/
 
-			$recipientDomain = substr(strrchr($recipient, "@"), 1);
-			$invitationLinkRecipients = explode(',', preg_replace('/\s+/', '', strtolower($this->config->getAppValue('dav', 'invitation_link_recipients', 'yes'))));
-
-			if (strcmp('yes', $invitationLinkRecipients[0]) === 0
-				 || in_array(strtolower($recipient), $invitationLinkRecipients)
-				 || in_array(strtolower($recipientDomain), $invitationLinkRecipients)) {
-				$this->addResponseButtons($template, $l10n, $iTipMessage, $lastOccurrence);
-			}
-		}
-
-		$template->addFooter();
-
-		$message->useTemplate($template);
-
-		$attachment = $this->mailer->createAttachment(
-			$iTipMessage->message->serialize(),
-			'event.ics',// TODO(leon): Make file name unique, e.g. add event id
-			'text/calendar; method=' . $iTipMessage->method
-		);
-		$message->attach($attachment);
-
-		try {
-			$failed = $this->mailer->send($message);
-			$iTipMessage->scheduleStatus = '1.1; Scheduling message is sent via iMip';
-			if ($failed) {
-				$this->logger->error('Unable to deliver message to {failed}', ['app' => 'dav', 'failed' =>  implode(', ', $failed)]);
-				$iTipMessage->scheduleStatus = '5.0; EMail delivery failed';
-			}
-		} catch(\Exception $ex) {
-			$this->logger->logException($ex, ['app' => 'dav']);
-			$iTipMessage->scheduleStatus = '5.0; EMail delivery failed';
-		}
-	}
-
-	/**
-	 * check if event took place in the past already
-	 * @param VCalendar $vObject
-	 * @return int
-	 */
-	private function getLastOccurrence(VCalendar $vObject) {
-		/** @var VEvent $component */
-		$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)) {
-				/** @var \DateTime $endDate */
-				$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()) {
-				/** @var \DateTime $endDate */
-				$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();
-			}
-		}
-
-		return $lastOccurrence;
-	}
-
-
-	/**
-	 * @param Message $iTipMessage
-	 * @return null|Property
-	 */
-	private function getCurrentAttendee(Message $iTipMessage) {
-		/** @var VEvent $vevent */
-		$vevent = $iTipMessage->message->VEVENT;
-		$attendees = $vevent->select('ATTENDEE');
-		foreach ($attendees as $attendee) {
-			/** @var Property $attendee */
-			if (strcasecmp($attendee->getValue(), $iTipMessage->recipient) === 0) {
-				return $attendee;
-			}
-		}
-		return null;
-	}
-
-	/**
-	 * @param string $default
-	 * @param Property|null $attendee
-	 * @return string
-	 */
-	private function getAttendeeLangOrDefault($default, Property $attendee = null) {
-		if ($attendee !== null) {
-			$lang = $attendee->offsetGet('LANGUAGE');
-			if ($lang instanceof Parameter) {
-				return $lang->getValue();
-			}
-		}
-		return $default;
-	}
-
-	/**
-	 * @param Property|null $attendee
-	 * @return bool
-	 */
-	private function getAttendeeRSVP(Property $attendee = null) {
-		if ($attendee !== null) {
-			$rsvp = $attendee->offsetGet('RSVP');
-			if (($rsvp instanceof Parameter) && (strcasecmp($rsvp->getValue(), 'TRUE') === 0)) {
-				return true;
-			}
-		}
-		// RFC 5545 3.2.17: default RSVP is false
-		return false;
-	}
-
-	/**
-	 * @param IL10N $l10n
-	 * @param Property $dtstart
-	 * @param Property $dtend
-	 */
-	private function generateWhenString(IL10N $l10n, Property $dtstart, Property $dtend) {
-		$isAllDay = $dtstart instanceof Property\ICalendar\Date;
-
-		/** @var Property\ICalendar\Date | Property\ICalendar\DateTime $dtstart */
-		/** @var Property\ICalendar\Date | Property\ICalendar\DateTime $dtend */
-		/** @var \DateTimeImmutable $dtstartDt */
-		$dtstartDt = $dtstart->getDateTime();
-		/** @var \DateTimeImmutable $dtendDt */
-		$dtendDt = $dtend->getDateTime();
-
-		$diff = $dtstartDt->diff($dtendDt);
-
-		$dtstartDt = new \DateTime($dtstartDt->format(\DateTime::ATOM));
-		$dtendDt = new \DateTime($dtendDt->format(\DateTime::ATOM));
-
-		if ($isAllDay) {
-			// One day event
-			if ($diff->days === 1) {
-				return $l10n->l('date', $dtstartDt, ['width' => 'medium']);
-			}
-
-			// DTEND is exclusive, so if the ics data says 2020-01-01 to 2020-01-05,
-			// the email should show 2020-01-01 to 2020-01-04.
-			$dtendDt->modify('-1 day');
-
-			//event that spans over multiple days
-			$localeStart = $l10n->l('date', $dtstartDt, ['width' => 'medium']);
-			$localeEnd = $l10n->l('date', $dtendDt, ['width' => 'medium']);
-
-			return $localeStart . ' - ' . $localeEnd;
-		}
-
-		/** @var Property\ICalendar\DateTime $dtstart */
-		/** @var Property\ICalendar\DateTime $dtend */
-		$isFloating = $dtstart->isFloating();
-		$startTimezone = $endTimezone = null;
-		if (!$isFloating) {
-			$prop = $dtstart->offsetGet('TZID');
-			if ($prop instanceof Parameter) {
-				$startTimezone = $prop->getValue();
-			}
-
-			$prop = $dtend->offsetGet('TZID');
-			if ($prop instanceof Parameter) {
-				$endTimezone = $prop->getValue();
-			}
-		}
-
-		$localeStart = $l10n->l('weekdayName', $dtstartDt, ['width' => 'abbreviated']) . ', ' .
-			$l10n->l('datetime', $dtstartDt, ['width' => 'medium|short']);
-
-		// always show full date with timezone if timezones are different
-		if ($startTimezone !== $endTimezone) {
-			$localeEnd = $l10n->l('datetime', $dtendDt, ['width' => 'medium|short']);
-
-			return $localeStart . ' (' . $startTimezone . ') - ' .
-				$localeEnd . ' (' . $endTimezone . ')';
-		}
-
-		// show only end time if date is the same
-		if ($this->isDayEqual($dtstartDt, $dtendDt)) {
-			$localeEnd = $l10n->l('time', $dtendDt, ['width' => 'short']);
-		} else {
-			$localeEnd = $l10n->l('weekdayName', $dtendDt, ['width' => 'abbreviated']) . ', ' .
-				$l10n->l('datetime', $dtendDt, ['width' => 'medium|short']);
-		}
-
-		return  $localeStart . ' - ' . $localeEnd . ' (' . $startTimezone . ')';
-	}
-
-	/**
-	 * @param \DateTime $dtStart
-	 * @param \DateTime $dtEnd
-	 * @return bool
-	 */
-	private function isDayEqual(\DateTime $dtStart, \DateTime $dtEnd) {
-		return $dtStart->format('Y-m-d') === $dtEnd->format('Y-m-d');
-	}
-
-	/**
-	 * @param IEMailTemplate $template
-	 * @param IL10N $l10n
-	 * @param string $method
-	 * @param string $summary
-	 * @param string $attendeeName
-	 * @param string $inviteeName
-	 */
-	private function addSubjectAndHeading(IEMailTemplate $template, IL10N $l10n,
-										  $method, $summary, $attendeeName, $inviteeName) {
-		if ($method === self::METHOD_CANCEL) {
-			$template->setSubject('Cancelled: ' . $summary);
-			$template->addHeading($l10n->t('Invitation canceled'), $l10n->t('Hello %s,', [$attendeeName]));
-			$template->addBodyText($l10n->t('The meeting »%1$s« with %2$s was canceled.', [$summary, $inviteeName]));
-		} else if ($method === self::METHOD_REPLY) {
-			$template->setSubject('Re: ' . $summary);
-			$template->addHeading($l10n->t('Invitation updated'), $l10n->t('Hello %s,', [$attendeeName]));
-			$template->addBodyText($l10n->t('The meeting »%1$s« with %2$s was updated.', [$summary, $inviteeName]));
-		} else {
-			$template->setSubject('Invitation: ' . $summary);
-			$template->addHeading($l10n->t('%1$s invited you to »%2$s«', [$inviteeName, $summary]), $l10n->t('Hello %s,', [$attendeeName]));
-		}
-	}
-
-	/**
-	 * @param IEMailTemplate $template
-	 * @param IL10N $l10n
-	 * @param string $time
-	 * @param string $location
-	 * @param string $description
-	 * @param string $url
-	 */
-	private function addBulletList(IEMailTemplate $template, IL10N $l10n, $time, $location, $description, $url) {
-		$template->addBodyListItem($time, $l10n->t('When:'),
-			$this->getAbsoluteImagePath('filetypes/text-calendar.svg'));
-
-		if ($location) {
-			$template->addBodyListItem($location, $l10n->t('Where:'),
-				$this->getAbsoluteImagePath('filetypes/location.svg'));
-		}
-		if ($description) {
-			$template->addBodyListItem((string)$description, $l10n->t('Description:'),
-				$this->getAbsoluteImagePath('filetypes/text.svg'));
-		}
-		if ($url) {
-			$template->addBodyListItem((string)$url, $l10n->t('Link:'),
-				$this->getAbsoluteImagePath('filetypes/link.svg'));
-		}
-	}
-
-	/**
-	 * @param IEMailTemplate $template
-	 * @param IL10N $l10n
-	 * @param Message $iTipMessage
-	 * @param int $lastOccurrence
-	 */
-	private function addResponseButtons(IEMailTemplate $template, IL10N $l10n,
-										Message $iTipMessage, $lastOccurrence) {
-		$token = $this->createInvitationToken($iTipMessage, $lastOccurrence);
-
-		$template->addBodyButtonGroup(
-			$l10n->t('Accept'),
-			$this->urlGenerator->linkToRouteAbsolute('dav.invitation_response.accept', [
-				'token' => $token,
-			]),
-			$l10n->t('Decline'),
-			$this->urlGenerator->linkToRouteAbsolute('dav.invitation_response.decline', [
-				'token' => $token,
-			])
-		);
-
-		$moreOptionsURL = $this->urlGenerator->linkToRouteAbsolute('dav.invitation_response.options', [
-			'token' => $token,
-		]);
-		$html = vsprintf('<small><a href="%s">%s</a></small>', [
-			$moreOptionsURL, $l10n->t('More options …')
-		]);
-		$text = $l10n->t('More options at %s', [$moreOptionsURL]);
-
-		$template->addBodyText($html, $text);
-	}
-
-	/**
-	 * @param string $path
-	 * @return string
-	 */
-	private function getAbsoluteImagePath($path) {
-		return $this->urlGenerator->getAbsoluteURL(
-			$this->urlGenerator->imagePath('core', $path)
-		);
-	}
-
-	/**
-	 * @param Message $iTipMessage
-	 * @param int $lastOccurrence
-	 * @return string
-	 */
-	private function createInvitationToken(Message $iTipMessage, $lastOccurrence):string {
-		$token = $this->random->generate(60, ISecureRandom::CHAR_UPPER . ISecureRandom::CHAR_LOWER . ISecureRandom::CHAR_DIGITS);
-
-		/** @var VEvent $vevent */
-		$vevent = $iTipMessage->message->VEVENT;
-		$attendee = $iTipMessage->recipient;
-		$organizer = $iTipMessage->sender;
-		$sequence = $iTipMessage->sequence;
-		$recurrenceId = isset($vevent->{'RECURRENCE-ID'}) ?
-			$vevent->{'RECURRENCE-ID'}->serialize() : null;
-		$uid = $vevent->{'UID'};
-
-		$query = $this->db->getQueryBuilder();
-		$query->insert('calendar_invitations')
-			->values([
-				'token' => $query->createNamedParameter($token),
-				'attendee' => $query->createNamedParameter($attendee),
-				'organizer' => $query->createNamedParameter($organizer),
-				'sequence' => $query->createNamedParameter($sequence),
-				'recurrenceid' => $query->createNamedParameter($recurrenceId),
-				'expiration' => $query->createNamedParameter($lastOccurrence),
-				'uid' => $query->createNamedParameter($uid)
-			])
-			->execute();
-
-		return $token;
-	}
+            $recipientDomain = substr(strrchr($recipient, "@"), 1);
+            $invitationLinkRecipients = explode(',', preg_replace('/\s+/', '', strtolower($this->config->getAppValue('dav', 'invitation_link_recipients', 'yes'))));
+
+            if (strcmp('yes', $invitationLinkRecipients[0]) === 0
+                 || in_array(strtolower($recipient), $invitationLinkRecipients)
+                 || in_array(strtolower($recipientDomain), $invitationLinkRecipients)) {
+                $this->addResponseButtons($template, $l10n, $iTipMessage, $lastOccurrence);
+            }
+        }
+
+        $template->addFooter();
+
+        $message->useTemplate($template);
+
+        $attachment = $this->mailer->createAttachment(
+            $iTipMessage->message->serialize(),
+            'event.ics',// TODO(leon): Make file name unique, e.g. add event id
+            'text/calendar; method=' . $iTipMessage->method
+        );
+        $message->attach($attachment);
+
+        try {
+            $failed = $this->mailer->send($message);
+            $iTipMessage->scheduleStatus = '1.1; Scheduling message is sent via iMip';
+            if ($failed) {
+                $this->logger->error('Unable to deliver message to {failed}', ['app' => 'dav', 'failed' =>  implode(', ', $failed)]);
+                $iTipMessage->scheduleStatus = '5.0; EMail delivery failed';
+            }
+        } catch(\Exception $ex) {
+            $this->logger->logException($ex, ['app' => 'dav']);
+            $iTipMessage->scheduleStatus = '5.0; EMail delivery failed';
+        }
+    }
+
+    /**
+     * check if event took place in the past already
+     * @param VCalendar $vObject
+     * @return int
+     */
+    private function getLastOccurrence(VCalendar $vObject) {
+        /** @var VEvent $component */
+        $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)) {
+                /** @var \DateTime $endDate */
+                $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()) {
+                /** @var \DateTime $endDate */
+                $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();
+            }
+        }
+
+        return $lastOccurrence;
+    }
+
+
+    /**
+     * @param Message $iTipMessage
+     * @return null|Property
+     */
+    private function getCurrentAttendee(Message $iTipMessage) {
+        /** @var VEvent $vevent */
+        $vevent = $iTipMessage->message->VEVENT;
+        $attendees = $vevent->select('ATTENDEE');
+        foreach ($attendees as $attendee) {
+            /** @var Property $attendee */
+            if (strcasecmp($attendee->getValue(), $iTipMessage->recipient) === 0) {
+                return $attendee;
+            }
+        }
+        return null;
+    }
+
+    /**
+     * @param string $default
+     * @param Property|null $attendee
+     * @return string
+     */
+    private function getAttendeeLangOrDefault($default, Property $attendee = null) {
+        if ($attendee !== null) {
+            $lang = $attendee->offsetGet('LANGUAGE');
+            if ($lang instanceof Parameter) {
+                return $lang->getValue();
+            }
+        }
+        return $default;
+    }
+
+    /**
+     * @param Property|null $attendee
+     * @return bool
+     */
+    private function getAttendeeRSVP(Property $attendee = null) {
+        if ($attendee !== null) {
+            $rsvp = $attendee->offsetGet('RSVP');
+            if (($rsvp instanceof Parameter) && (strcasecmp($rsvp->getValue(), 'TRUE') === 0)) {
+                return true;
+            }
+        }
+        // RFC 5545 3.2.17: default RSVP is false
+        return false;
+    }
+
+    /**
+     * @param IL10N $l10n
+     * @param Property $dtstart
+     * @param Property $dtend
+     */
+    private function generateWhenString(IL10N $l10n, Property $dtstart, Property $dtend) {
+        $isAllDay = $dtstart instanceof Property\ICalendar\Date;
+
+        /** @var Property\ICalendar\Date | Property\ICalendar\DateTime $dtstart */
+        /** @var Property\ICalendar\Date | Property\ICalendar\DateTime $dtend */
+        /** @var \DateTimeImmutable $dtstartDt */
+        $dtstartDt = $dtstart->getDateTime();
+        /** @var \DateTimeImmutable $dtendDt */
+        $dtendDt = $dtend->getDateTime();
+
+        $diff = $dtstartDt->diff($dtendDt);
+
+        $dtstartDt = new \DateTime($dtstartDt->format(\DateTime::ATOM));
+        $dtendDt = new \DateTime($dtendDt->format(\DateTime::ATOM));
+
+        if ($isAllDay) {
+            // One day event
+            if ($diff->days === 1) {
+                return $l10n->l('date', $dtstartDt, ['width' => 'medium']);
+            }
+
+            // DTEND is exclusive, so if the ics data says 2020-01-01 to 2020-01-05,
+            // the email should show 2020-01-01 to 2020-01-04.
+            $dtendDt->modify('-1 day');
+
+            //event that spans over multiple days
+            $localeStart = $l10n->l('date', $dtstartDt, ['width' => 'medium']);
+            $localeEnd = $l10n->l('date', $dtendDt, ['width' => 'medium']);
+
+            return $localeStart . ' - ' . $localeEnd;
+        }
+
+        /** @var Property\ICalendar\DateTime $dtstart */
+        /** @var Property\ICalendar\DateTime $dtend */
+        $isFloating = $dtstart->isFloating();
+        $startTimezone = $endTimezone = null;
+        if (!$isFloating) {
+            $prop = $dtstart->offsetGet('TZID');
+            if ($prop instanceof Parameter) {
+                $startTimezone = $prop->getValue();
+            }
+
+            $prop = $dtend->offsetGet('TZID');
+            if ($prop instanceof Parameter) {
+                $endTimezone = $prop->getValue();
+            }
+        }
+
+        $localeStart = $l10n->l('weekdayName', $dtstartDt, ['width' => 'abbreviated']) . ', ' .
+            $l10n->l('datetime', $dtstartDt, ['width' => 'medium|short']);
+
+        // always show full date with timezone if timezones are different
+        if ($startTimezone !== $endTimezone) {
+            $localeEnd = $l10n->l('datetime', $dtendDt, ['width' => 'medium|short']);
+
+            return $localeStart . ' (' . $startTimezone . ') - ' .
+                $localeEnd . ' (' . $endTimezone . ')';
+        }
+
+        // show only end time if date is the same
+        if ($this->isDayEqual($dtstartDt, $dtendDt)) {
+            $localeEnd = $l10n->l('time', $dtendDt, ['width' => 'short']);
+        } else {
+            $localeEnd = $l10n->l('weekdayName', $dtendDt, ['width' => 'abbreviated']) . ', ' .
+                $l10n->l('datetime', $dtendDt, ['width' => 'medium|short']);
+        }
+
+        return  $localeStart . ' - ' . $localeEnd . ' (' . $startTimezone . ')';
+    }
+
+    /**
+     * @param \DateTime $dtStart
+     * @param \DateTime $dtEnd
+     * @return bool
+     */
+    private function isDayEqual(\DateTime $dtStart, \DateTime $dtEnd) {
+        return $dtStart->format('Y-m-d') === $dtEnd->format('Y-m-d');
+    }
+
+    /**
+     * @param IEMailTemplate $template
+     * @param IL10N $l10n
+     * @param string $method
+     * @param string $summary
+     * @param string $attendeeName
+     * @param string $inviteeName
+     */
+    private function addSubjectAndHeading(IEMailTemplate $template, IL10N $l10n,
+                                            $method, $summary, $attendeeName, $inviteeName) {
+        if ($method === self::METHOD_CANCEL) {
+            $template->setSubject('Cancelled: ' . $summary);
+            $template->addHeading($l10n->t('Invitation canceled'), $l10n->t('Hello %s,', [$attendeeName]));
+            $template->addBodyText($l10n->t('The meeting »%1$s« with %2$s was canceled.', [$summary, $inviteeName]));
+        } else if ($method === self::METHOD_REPLY) {
+            $template->setSubject('Re: ' . $summary);
+            $template->addHeading($l10n->t('Invitation updated'), $l10n->t('Hello %s,', [$attendeeName]));
+            $template->addBodyText($l10n->t('The meeting »%1$s« with %2$s was updated.', [$summary, $inviteeName]));
+        } else {
+            $template->setSubject('Invitation: ' . $summary);
+            $template->addHeading($l10n->t('%1$s invited you to »%2$s«', [$inviteeName, $summary]), $l10n->t('Hello %s,', [$attendeeName]));
+        }
+    }
+
+    /**
+     * @param IEMailTemplate $template
+     * @param IL10N $l10n
+     * @param string $time
+     * @param string $location
+     * @param string $description
+     * @param string $url
+     */
+    private function addBulletList(IEMailTemplate $template, IL10N $l10n, $time, $location, $description, $url) {
+        $template->addBodyListItem($time, $l10n->t('When:'),
+            $this->getAbsoluteImagePath('filetypes/text-calendar.svg'));
+
+        if ($location) {
+            $template->addBodyListItem($location, $l10n->t('Where:'),
+                $this->getAbsoluteImagePath('filetypes/location.svg'));
+        }
+        if ($description) {
+            $template->addBodyListItem((string)$description, $l10n->t('Description:'),
+                $this->getAbsoluteImagePath('filetypes/text.svg'));
+        }
+        if ($url) {
+            $template->addBodyListItem((string)$url, $l10n->t('Link:'),
+                $this->getAbsoluteImagePath('filetypes/link.svg'));
+        }
+    }
+
+    /**
+     * @param IEMailTemplate $template
+     * @param IL10N $l10n
+     * @param Message $iTipMessage
+     * @param int $lastOccurrence
+     */
+    private function addResponseButtons(IEMailTemplate $template, IL10N $l10n,
+                                        Message $iTipMessage, $lastOccurrence) {
+        $token = $this->createInvitationToken($iTipMessage, $lastOccurrence);
+
+        $template->addBodyButtonGroup(
+            $l10n->t('Accept'),
+            $this->urlGenerator->linkToRouteAbsolute('dav.invitation_response.accept', [
+                'token' => $token,
+            ]),
+            $l10n->t('Decline'),
+            $this->urlGenerator->linkToRouteAbsolute('dav.invitation_response.decline', [
+                'token' => $token,
+            ])
+        );
+
+        $moreOptionsURL = $this->urlGenerator->linkToRouteAbsolute('dav.invitation_response.options', [
+            'token' => $token,
+        ]);
+        $html = vsprintf('<small><a href="%s">%s</a></small>', [
+            $moreOptionsURL, $l10n->t('More options …')
+        ]);
+        $text = $l10n->t('More options at %s', [$moreOptionsURL]);
+
+        $template->addBodyText($html, $text);
+    }
+
+    /**
+     * @param string $path
+     * @return string
+     */
+    private function getAbsoluteImagePath($path) {
+        return $this->urlGenerator->getAbsoluteURL(
+            $this->urlGenerator->imagePath('core', $path)
+        );
+    }
+
+    /**
+     * @param Message $iTipMessage
+     * @param int $lastOccurrence
+     * @return string
+     */
+    private function createInvitationToken(Message $iTipMessage, $lastOccurrence):string {
+        $token = $this->random->generate(60, ISecureRandom::CHAR_UPPER . ISecureRandom::CHAR_LOWER . ISecureRandom::CHAR_DIGITS);
+
+        /** @var VEvent $vevent */
+        $vevent = $iTipMessage->message->VEVENT;
+        $attendee = $iTipMessage->recipient;
+        $organizer = $iTipMessage->sender;
+        $sequence = $iTipMessage->sequence;
+        $recurrenceId = isset($vevent->{'RECURRENCE-ID'}) ?
+            $vevent->{'RECURRENCE-ID'}->serialize() : null;
+        $uid = $vevent->{'UID'};
+
+        $query = $this->db->getQueryBuilder();
+        $query->insert('calendar_invitations')
+            ->values([
+                'token' => $query->createNamedParameter($token),
+                'attendee' => $query->createNamedParameter($attendee),
+                'organizer' => $query->createNamedParameter($organizer),
+                'sequence' => $query->createNamedParameter($sequence),
+                'recurrenceid' => $query->createNamedParameter($recurrenceId),
+                'expiration' => $query->createNamedParameter($lastOccurrence),
+                'uid' => $query->createNamedParameter($uid)
+            ])
+            ->execute();
+
+        return $token;
+    }
 }

Spacing +23 added lines, -23 removed lines

@@ -238,11 +238,11 @@ 
 		}
 
 		$data = [
-			'attendee_name' => (string)$meetingAttendeeName ?: $defaultVal,
-			'invitee_name' => (string)$meetingInviteeName ?: $defaultVal,
-			'meeting_title' => (string)$meetingTitle ?: $defaultVal,
-			'meeting_description' => (string)$meetingDescription ?: $defaultVal,
-			'meeting_url' => (string)$meetingUrl ?: $defaultVal,
+			'attendee_name' => (string) $meetingAttendeeName ?: $defaultVal,
+			'invitee_name' => (string) $meetingInviteeName ?: $defaultVal,
+			'meeting_title' => (string) $meetingTitle ?: $defaultVal,
+			'meeting_description' => (string) $meetingDescription ?: $defaultVal,
+			'meeting_url' => (string) $meetingUrl ?: $defaultVal,
 		];
 
 		$fromEMail = \OCP\Util::getDefaultEmailAddress('invitations-noreply');
@@ -253,7 +253,7 @@ 
 			->setReplyTo([$sender => $senderName])
 			->setTo([$recipient => $recipientName]);
 
-		$template = $this->mailer->createEMailTemplate('dav.calendarInvite.' . $method, $data);
+		$template = $this->mailer->createEMailTemplate('dav.calendarInvite.'.$method, $data);
 		$template->addHeader();
 
 		$this->addSubjectAndHeading($template, $l10n, $method, $summary,
@@ -300,8 +300,8 @@ 
 
 		$attachment = $this->mailer->createAttachment(
 			$iTipMessage->message->serialize(),
-			'event.ics',// TODO(leon): Make file name unique, e.g. add event id
-			'text/calendar; method=' . $iTipMessage->method
+			'event.ics', // TODO(leon): Make file name unique, e.g. add event id
+			'text/calendar; method='.$iTipMessage->method
 		);
 		$message->attach($attachment);
 
@@ -312,7 +312,7 @@ 
 				$this->logger->error('Unable to deliver message to {failed}', ['app' => 'dav', 'failed' =>  implode(', ', $failed)]);
 				$iTipMessage->scheduleStatus = '5.0; EMail delivery failed';
 			}
-		} catch(\Exception $ex) {
+		} catch (\Exception $ex) {
 			$this->logger->logException($ex, ['app' => 'dav']);
 			$iTipMessage->scheduleStatus = '5.0; EMail delivery failed';
 		}
@@ -348,13 +348,13 @@ 
 				$lastOccurrence = $firstOccurrence;
 			}
 		} else {
-			$it = new EventIterator($vObject, (string)$component->UID);
+			$it = new EventIterator($vObject, (string) $component->UID);
 			$maxDate = new \DateTime(self::MAX_DATE);
 			if ($it->isInfinite()) {
 				$lastOccurrence = $maxDate->getTimestamp();
 			} else {
 				$end = $it->getDtEnd();
-				while($it->valid() && $end < $maxDate) {
+				while ($it->valid() && $end < $maxDate) {
 					$end = $it->getDtEnd();
 					$it->next();
 
@@ -448,7 +448,7 @@ 
 			$localeStart = $l10n->l('date', $dtstartDt, ['width' => 'medium']);
 			$localeEnd = $l10n->l('date', $dtendDt, ['width' => 'medium']);
 
-			return $localeStart . ' - ' . $localeEnd;
+			return $localeStart.' - '.$localeEnd;
 		}
 
 		/** @var Property\ICalendar\DateTime $dtstart */
@@ -467,26 +467,26 @@ 
 			}
 		}
 
-		$localeStart = $l10n->l('weekdayName', $dtstartDt, ['width' => 'abbreviated']) . ', ' .
+		$localeStart = $l10n->l('weekdayName', $dtstartDt, ['width' => 'abbreviated']).', '.
 			$l10n->l('datetime', $dtstartDt, ['width' => 'medium|short']);
 
 		// always show full date with timezone if timezones are different
 		if ($startTimezone !== $endTimezone) {
 			$localeEnd = $l10n->l('datetime', $dtendDt, ['width' => 'medium|short']);
 
-			return $localeStart . ' (' . $startTimezone . ') - ' .
-				$localeEnd . ' (' . $endTimezone . ')';
+			return $localeStart.' ('.$startTimezone.') - '.
+				$localeEnd.' ('.$endTimezone.')';
 		}
 
 		// show only end time if date is the same
 		if ($this->isDayEqual($dtstartDt, $dtendDt)) {
 			$localeEnd = $l10n->l('time', $dtendDt, ['width' => 'short']);
 		} else {
-			$localeEnd = $l10n->l('weekdayName', $dtendDt, ['width' => 'abbreviated']) . ', ' .
+			$localeEnd = $l10n->l('weekdayName', $dtendDt, ['width' => 'abbreviated']).', '.
 				$l10n->l('datetime', $dtendDt, ['width' => 'medium|short']);
 		}
 
-		return  $localeStart . ' - ' . $localeEnd . ' (' . $startTimezone . ')';
+		return  $localeStart.' - '.$localeEnd.' ('.$startTimezone.')';
 	}
 
 	/**
@@ -509,15 +509,15 @@ 
 	private function addSubjectAndHeading(IEMailTemplate $template, IL10N $l10n,
 										  $method, $summary, $attendeeName, $inviteeName) {
 		if ($method === self::METHOD_CANCEL) {
-			$template->setSubject('Cancelled: ' . $summary);
+			$template->setSubject('Cancelled: '.$summary);
 			$template->addHeading($l10n->t('Invitation canceled'), $l10n->t('Hello %s,', [$attendeeName]));
 			$template->addBodyText($l10n->t('The meeting »%1$s« with %2$s was canceled.', [$summary, $inviteeName]));
 		} else if ($method === self::METHOD_REPLY) {
-			$template->setSubject('Re: ' . $summary);
+			$template->setSubject('Re: '.$summary);
 			$template->addHeading($l10n->t('Invitation updated'), $l10n->t('Hello %s,', [$attendeeName]));
 			$template->addBodyText($l10n->t('The meeting »%1$s« with %2$s was updated.', [$summary, $inviteeName]));
 		} else {
-			$template->setSubject('Invitation: ' . $summary);
+			$template->setSubject('Invitation: '.$summary);
 			$template->addHeading($l10n->t('%1$s invited you to »%2$s«', [$inviteeName, $summary]), $l10n->t('Hello %s,', [$attendeeName]));
 		}
 	}
@@ -539,11 +539,11 @@ 
 				$this->getAbsoluteImagePath('filetypes/location.svg'));
 		}
 		if ($description) {
-			$template->addBodyListItem((string)$description, $l10n->t('Description:'),
+			$template->addBodyListItem((string) $description, $l10n->t('Description:'),
 				$this->getAbsoluteImagePath('filetypes/text.svg'));
 		}
 		if ($url) {
-			$template->addBodyListItem((string)$url, $l10n->t('Link:'),
+			$template->addBodyListItem((string) $url, $l10n->t('Link:'),
 				$this->getAbsoluteImagePath('filetypes/link.svg'));
 		}
 	}
@@ -596,7 +596,7 @@ 
 	 * @return string
 	 */
 	private function createInvitationToken(Message $iTipMessage, $lastOccurrence):string {
-		$token = $this->random->generate(60, ISecureRandom::CHAR_UPPER . ISecureRandom::CHAR_LOWER . ISecureRandom::CHAR_DIGITS);
+		$token = $this->random->generate(60, ISecureRandom::CHAR_UPPER.ISecureRandom::CHAR_LOWER.ISecureRandom::CHAR_DIGITS);
 
 		/** @var VEvent $vevent */
 		$vevent = $iTipMessage->message->VEVENT;

apps/dav/lib/Connector/Sabre/MaintenancePlugin.php

Indentation +48 added lines, -48 removed lines

@@ -33,58 +33,58 @@
 
 class MaintenancePlugin extends ServerPlugin {
 
-	/** @var IConfig */
-	private $config;
+    /** @var IConfig */
+    private $config;
 
-	/**
-	 * Reference to main server object
-	 *
-	 * @var Server
-	 */
-	private $server;
+    /**
+     * Reference to main server object
+     *
+     * @var Server
+     */
+    private $server;
 
-	/**
-	 * @param IConfig $config
-	 */
-	public function __construct(IConfig $config = null) {
-		$this->config = $config;
-		if (is_null($config)) {
-			$this->config = \OC::$server->getConfig();
-		}
-	}
+    /**
+     * @param IConfig $config
+     */
+    public function __construct(IConfig $config = null) {
+        $this->config = $config;
+        if (is_null($config)) {
+            $this->config = \OC::$server->getConfig();
+        }
+    }
 
 
-	/**
-	 * This initializes the plugin.
-	 *
-	 * This function is called by \Sabre\DAV\Server, after
-	 * addPlugin is called.
-	 *
-	 * This method should set up the required event subscriptions.
-	 *
-	 * @param \Sabre\DAV\Server $server
-	 * @return void
-	 */
-	public function initialize(\Sabre\DAV\Server $server) {
-		$this->server = $server;
-		$this->server->on('beforeMethod', [$this, 'checkMaintenanceMode'], 1);
-	}
+    /**
+     * This initializes the plugin.
+     *
+     * This function is called by \Sabre\DAV\Server, after
+     * addPlugin is called.
+     *
+     * This method should set up the required event subscriptions.
+     *
+     * @param \Sabre\DAV\Server $server
+     * @return void
+     */
+    public function initialize(\Sabre\DAV\Server $server) {
+        $this->server = $server;
+        $this->server->on('beforeMethod', [$this, 'checkMaintenanceMode'], 1);
+    }
 
-	/**
-	 * This method is called before any HTTP method and returns http status code 503
-	 * in case the system is in maintenance mode.
-	 *
-	 * @throws ServiceUnavailable
-	 * @return bool
-	 */
-	public function checkMaintenanceMode() {
-		if ($this->config->getSystemValueBool('maintenance')) {
-			throw new ServiceUnavailable('System in maintenance mode.');
-		}
-		if (Util::needUpgrade()) {
-			throw new ServiceUnavailable('Upgrade needed');
-		}
+    /**
+     * This method is called before any HTTP method and returns http status code 503
+     * in case the system is in maintenance mode.
+     *
+     * @throws ServiceUnavailable
+     * @return bool
+     */
+    public function checkMaintenanceMode() {
+        if ($this->config->getSystemValueBool('maintenance')) {
+            throw new ServiceUnavailable('System in maintenance mode.');
+        }
+        if (Util::needUpgrade()) {
+            throw new ServiceUnavailable('Upgrade needed');
+        }
 
-		return true;
-	}
+        return true;
+    }
 }

apps/dav/lib/Connector/Sabre/FilesPlugin.php

Indentation +462 added lines, -462 removed lines

@@ -52,470 +52,470 @@
 
 class FilesPlugin extends ServerPlugin {
 
-	// namespace
-	const NS_OWNCLOUD = 'http://owncloud.org/ns';
-	const NS_NEXTCLOUD = 'http://nextcloud.org/ns';
-	const FILEID_PROPERTYNAME = '{http://owncloud.org/ns}id';
-	const INTERNAL_FILEID_PROPERTYNAME = '{http://owncloud.org/ns}fileid';
-	const PERMISSIONS_PROPERTYNAME = '{http://owncloud.org/ns}permissions';
-	const SHARE_PERMISSIONS_PROPERTYNAME = '{http://open-collaboration-services.org/ns}share-permissions';
-	const OCM_SHARE_PERMISSIONS_PROPERTYNAME = '{http://open-cloud-mesh.org/ns}share-permissions';
-	const DOWNLOADURL_PROPERTYNAME = '{http://owncloud.org/ns}downloadURL';
-	const SIZE_PROPERTYNAME = '{http://owncloud.org/ns}size';
-	const GETETAG_PROPERTYNAME = '{DAV:}getetag';
-	const LASTMODIFIED_PROPERTYNAME = '{DAV:}lastmodified';
-	const OWNER_ID_PROPERTYNAME = '{http://owncloud.org/ns}owner-id';
-	const OWNER_DISPLAY_NAME_PROPERTYNAME = '{http://owncloud.org/ns}owner-display-name';
-	const CHECKSUMS_PROPERTYNAME = '{http://owncloud.org/ns}checksums';
-	const DATA_FINGERPRINT_PROPERTYNAME = '{http://owncloud.org/ns}data-fingerprint';
-	const HAS_PREVIEW_PROPERTYNAME = '{http://nextcloud.org/ns}has-preview';
-	const MOUNT_TYPE_PROPERTYNAME = '{http://nextcloud.org/ns}mount-type';
-	const IS_ENCRYPTED_PROPERTYNAME = '{http://nextcloud.org/ns}is-encrypted';
-	const METADATA_ETAG_PROPERTYNAME = '{http://nextcloud.org/ns}metadata_etag';
-	const UPLOAD_TIME_PROPERTYNAME = '{http://nextcloud.org/ns}upload_time';
-	const CREATION_TIME_PROPERTYNAME = '{http://nextcloud.org/ns}creation_time';
-	const SHARE_NOTE = '{http://nextcloud.org/ns}note';
-
-	/**
-	 * Reference to main server object
-	 *
-	 * @var \Sabre\DAV\Server
-	 */
-	private $server;
-
-	/**
-	 * @var Tree
-	 */
-	private $tree;
-
-	/**
-	 * Whether this is public webdav.
-	 * If true, some returned information will be stripped off.
-	 *
-	 * @var bool
-	 */
-	private $isPublic;
-
-	/**
-	 * @var bool
-	 */
-	private $downloadAttachment;
-
-	/**
-	 * @var IConfig
-	 */
-	private $config;
-
-	/**
-	 * @var IRequest
-	 */
-	private $request;
-
-	/**
-	 * @var IPreview
-	 */
-	private $previewManager;
-
-	/**
-	 * @param Tree $tree
-	 * @param IConfig $config
-	 * @param IRequest $request
-	 * @param IPreview $previewManager
-	 * @param bool $isPublic
-	 * @param bool $downloadAttachment
-	 */
-	public function __construct(Tree $tree,
-								IConfig $config,
-								IRequest $request,
-								IPreview $previewManager,
-								$isPublic = false,
-								$downloadAttachment = true) {
-		$this->tree = $tree;
-		$this->config = $config;
-		$this->request = $request;
-		$this->isPublic = $isPublic;
-		$this->downloadAttachment = $downloadAttachment;
-		$this->previewManager = $previewManager;
-	}
-
-	/**
-	 * This initializes the plugin.
-	 *
-	 * This function is called by \Sabre\DAV\Server, after
-	 * addPlugin is called.
-	 *
-	 * This method should set up the required event subscriptions.
-	 *
-	 * @param \Sabre\DAV\Server $server
-	 * @return void
-	 */
-	public function initialize(\Sabre\DAV\Server $server) {
-		$server->xml->namespaceMap[self::NS_OWNCLOUD] = 'oc';
-		$server->xml->namespaceMap[self::NS_NEXTCLOUD] = 'nc';
-		$server->protectedProperties[] = self::FILEID_PROPERTYNAME;
-		$server->protectedProperties[] = self::INTERNAL_FILEID_PROPERTYNAME;
-		$server->protectedProperties[] = self::PERMISSIONS_PROPERTYNAME;
-		$server->protectedProperties[] = self::SHARE_PERMISSIONS_PROPERTYNAME;
-		$server->protectedProperties[] = self::OCM_SHARE_PERMISSIONS_PROPERTYNAME;
-		$server->protectedProperties[] = self::SIZE_PROPERTYNAME;
-		$server->protectedProperties[] = self::DOWNLOADURL_PROPERTYNAME;
-		$server->protectedProperties[] = self::OWNER_ID_PROPERTYNAME;
-		$server->protectedProperties[] = self::OWNER_DISPLAY_NAME_PROPERTYNAME;
-		$server->protectedProperties[] = self::CHECKSUMS_PROPERTYNAME;
-		$server->protectedProperties[] = self::DATA_FINGERPRINT_PROPERTYNAME;
-		$server->protectedProperties[] = self::HAS_PREVIEW_PROPERTYNAME;
-		$server->protectedProperties[] = self::MOUNT_TYPE_PROPERTYNAME;
-		$server->protectedProperties[] = self::IS_ENCRYPTED_PROPERTYNAME;
-		$server->protectedProperties[] = self::SHARE_NOTE;
-
-		// normally these cannot be changed (RFC4918), but we want them modifiable through PROPPATCH
-		$allowedProperties = ['{DAV:}getetag'];
-		$server->protectedProperties = array_diff($server->protectedProperties, $allowedProperties);
-
-		$this->server = $server;
-		$this->server->on('propFind', [$this, 'handleGetProperties']);
-		$this->server->on('propPatch', [$this, 'handleUpdateProperties']);
-		$this->server->on('afterBind', [$this, 'sendFileIdHeader']);
-		$this->server->on('afterWriteContent', [$this, 'sendFileIdHeader']);
-		$this->server->on('afterMethod:GET', [$this,'httpGet']);
-		$this->server->on('afterMethod:GET', [$this, 'handleDownloadToken']);
-		$this->server->on('afterResponse', function($request, ResponseInterface $response) {
-			$body = $response->getBody();
-			if (is_resource($body)) {
-				fclose($body);
-			}
-		});
-		$this->server->on('beforeMove', [$this, 'checkMove']);
-	}
-
-	/**
-	 * Plugin that checks if a move can actually be performed.
-	 *
-	 * @param string $source source path
-	 * @param string $destination destination path
-	 * @throws Forbidden
-	 * @throws NotFound
-	 */
-	function checkMove($source, $destination) {
-		$sourceNode = $this->tree->getNodeForPath($source);
-		if (!$sourceNode instanceof Node) {
-			return;
-		}
-		list($sourceDir,) = \Sabre\Uri\split($source);
-		list($destinationDir,) = \Sabre\Uri\split($destination);
-
-		if ($sourceDir !== $destinationDir) {
-			$sourceNodeFileInfo = $sourceNode->getFileInfo();
-			if ($sourceNodeFileInfo === null) {
-				throw new NotFound($source . ' does not exist');
- 			}
-
-			if (!$sourceNodeFileInfo->isDeletable()) {
-				throw new Forbidden($source . " cannot be deleted");
-			}
-		}
-	}
-
-	/**
-	 * This sets a cookie to be able to recognize the start of the download
-	 * the content must not be longer than 32 characters and must only contain
-	 * alphanumeric characters
-	 *
-	 * @param RequestInterface $request
-	 * @param ResponseInterface $response
-	 */
-	function handleDownloadToken(RequestInterface $request, ResponseInterface $response) {
-		$queryParams = $request->getQueryParameters();
-
-		/**
-		 * this sets a cookie to be able to recognize the start of the download
-		 * the content must not be longer than 32 characters and must only contain
-		 * alphanumeric characters
-		 */
-		if (isset($queryParams['downloadStartSecret'])) {
-			$token = $queryParams['downloadStartSecret'];
-			if (!isset($token[32])
-				&& preg_match('!^[a-zA-Z0-9]+$!', $token) === 1) {
-				// FIXME: use $response->setHeader() instead
-				setcookie('ocDownloadStarted', $token, time() + 20, '/');
-			}
-		}
-	}
-
-	/**
-	 * Add headers to file download
-	 *
-	 * @param RequestInterface $request
-	 * @param ResponseInterface $response
-	 */
-	function httpGet(RequestInterface $request, ResponseInterface $response) {
-		// Only handle valid files
-		$node = $this->tree->getNodeForPath($request->getPath());
-		if (!($node instanceof IFile)) return;
-
-		// adds a 'Content-Disposition: attachment' header in case no disposition
-		// header has been set before
-		if ($this->downloadAttachment &&
-			$response->getHeader('Content-Disposition') === null) {
-			$filename = $node->getName();
-			if ($this->request->isUserAgent(
-				[
-					Request::USER_AGENT_IE,
-					Request::USER_AGENT_ANDROID_MOBILE_CHROME,
-					Request::USER_AGENT_FREEBOX,
-				])) {
-				$response->addHeader('Content-Disposition', 'attachment; filename="' . rawurlencode($filename) . '"');
-			} else {
-				$response->addHeader('Content-Disposition', 'attachment; filename*=UTF-8\'\'' . rawurlencode($filename)
-													 . '; filename="' . rawurlencode($filename) . '"');
-			}
-		}
-
-		if ($node instanceof \OCA\DAV\Connector\Sabre\File) {
-			//Add OC-Checksum header
-			/** @var $node File */
-			$checksum = $node->getChecksum();
-			if ($checksum !== null && $checksum !== '') {
-				$response->addHeader('OC-Checksum', $checksum);
-			}
-		}
-	}
-
-	/**
-	 * Adds all ownCloud-specific properties
-	 *
-	 * @param PropFind $propFind
-	 * @param \Sabre\DAV\INode $node
-	 * @return void
-	 */
-	public function handleGetProperties(PropFind $propFind, \Sabre\DAV\INode $node) {
-
-		$httpRequest = $this->server->httpRequest;
-
-		if ($node instanceof \OCA\DAV\Connector\Sabre\Node) {
-			/**
-			 * This was disabled, because it made dir listing throw an exception,
-			 * so users were unable to navigate into folders where one subitem
-			 * is blocked by the files_accesscontrol app, see:
-			 * https://github.com/nextcloud/files_accesscontrol/issues/65
+    // namespace
+    const NS_OWNCLOUD = 'http://owncloud.org/ns';
+    const NS_NEXTCLOUD = 'http://nextcloud.org/ns';
+    const FILEID_PROPERTYNAME = '{http://owncloud.org/ns}id';
+    const INTERNAL_FILEID_PROPERTYNAME = '{http://owncloud.org/ns}fileid';
+    const PERMISSIONS_PROPERTYNAME = '{http://owncloud.org/ns}permissions';
+    const SHARE_PERMISSIONS_PROPERTYNAME = '{http://open-collaboration-services.org/ns}share-permissions';
+    const OCM_SHARE_PERMISSIONS_PROPERTYNAME = '{http://open-cloud-mesh.org/ns}share-permissions';
+    const DOWNLOADURL_PROPERTYNAME = '{http://owncloud.org/ns}downloadURL';
+    const SIZE_PROPERTYNAME = '{http://owncloud.org/ns}size';
+    const GETETAG_PROPERTYNAME = '{DAV:}getetag';
+    const LASTMODIFIED_PROPERTYNAME = '{DAV:}lastmodified';
+    const OWNER_ID_PROPERTYNAME = '{http://owncloud.org/ns}owner-id';
+    const OWNER_DISPLAY_NAME_PROPERTYNAME = '{http://owncloud.org/ns}owner-display-name';
+    const CHECKSUMS_PROPERTYNAME = '{http://owncloud.org/ns}checksums';
+    const DATA_FINGERPRINT_PROPERTYNAME = '{http://owncloud.org/ns}data-fingerprint';
+    const HAS_PREVIEW_PROPERTYNAME = '{http://nextcloud.org/ns}has-preview';
+    const MOUNT_TYPE_PROPERTYNAME = '{http://nextcloud.org/ns}mount-type';
+    const IS_ENCRYPTED_PROPERTYNAME = '{http://nextcloud.org/ns}is-encrypted';
+    const METADATA_ETAG_PROPERTYNAME = '{http://nextcloud.org/ns}metadata_etag';
+    const UPLOAD_TIME_PROPERTYNAME = '{http://nextcloud.org/ns}upload_time';
+    const CREATION_TIME_PROPERTYNAME = '{http://nextcloud.org/ns}creation_time';
+    const SHARE_NOTE = '{http://nextcloud.org/ns}note';
+
+    /**
+     * Reference to main server object
+     *
+     * @var \Sabre\DAV\Server
+     */
+    private $server;
+
+    /**
+     * @var Tree
+     */
+    private $tree;
+
+    /**
+     * Whether this is public webdav.
+     * If true, some returned information will be stripped off.
+     *
+     * @var bool
+     */
+    private $isPublic;
+
+    /**
+     * @var bool
+     */
+    private $downloadAttachment;
+
+    /**
+     * @var IConfig
+     */
+    private $config;
+
+    /**
+     * @var IRequest
+     */
+    private $request;
+
+    /**
+     * @var IPreview
+     */
+    private $previewManager;
+
+    /**
+     * @param Tree $tree
+     * @param IConfig $config
+     * @param IRequest $request
+     * @param IPreview $previewManager
+     * @param bool $isPublic
+     * @param bool $downloadAttachment
+     */
+    public function __construct(Tree $tree,
+                                IConfig $config,
+                                IRequest $request,
+                                IPreview $previewManager,
+                                $isPublic = false,
+                                $downloadAttachment = true) {
+        $this->tree = $tree;
+        $this->config = $config;
+        $this->request = $request;
+        $this->isPublic = $isPublic;
+        $this->downloadAttachment = $downloadAttachment;
+        $this->previewManager = $previewManager;
+    }
+
+    /**
+     * This initializes the plugin.
+     *
+     * This function is called by \Sabre\DAV\Server, after
+     * addPlugin is called.
+     *
+     * This method should set up the required event subscriptions.
+     *
+     * @param \Sabre\DAV\Server $server
+     * @return void
+     */
+    public function initialize(\Sabre\DAV\Server $server) {
+        $server->xml->namespaceMap[self::NS_OWNCLOUD] = 'oc';
+        $server->xml->namespaceMap[self::NS_NEXTCLOUD] = 'nc';
+        $server->protectedProperties[] = self::FILEID_PROPERTYNAME;
+        $server->protectedProperties[] = self::INTERNAL_FILEID_PROPERTYNAME;
+        $server->protectedProperties[] = self::PERMISSIONS_PROPERTYNAME;
+        $server->protectedProperties[] = self::SHARE_PERMISSIONS_PROPERTYNAME;
+        $server->protectedProperties[] = self::OCM_SHARE_PERMISSIONS_PROPERTYNAME;
+        $server->protectedProperties[] = self::SIZE_PROPERTYNAME;
+        $server->protectedProperties[] = self::DOWNLOADURL_PROPERTYNAME;
+        $server->protectedProperties[] = self::OWNER_ID_PROPERTYNAME;
+        $server->protectedProperties[] = self::OWNER_DISPLAY_NAME_PROPERTYNAME;
+        $server->protectedProperties[] = self::CHECKSUMS_PROPERTYNAME;
+        $server->protectedProperties[] = self::DATA_FINGERPRINT_PROPERTYNAME;
+        $server->protectedProperties[] = self::HAS_PREVIEW_PROPERTYNAME;
+        $server->protectedProperties[] = self::MOUNT_TYPE_PROPERTYNAME;
+        $server->protectedProperties[] = self::IS_ENCRYPTED_PROPERTYNAME;
+        $server->protectedProperties[] = self::SHARE_NOTE;
+
+        // normally these cannot be changed (RFC4918), but we want them modifiable through PROPPATCH
+        $allowedProperties = ['{DAV:}getetag'];
+        $server->protectedProperties = array_diff($server->protectedProperties, $allowedProperties);
+
+        $this->server = $server;
+        $this->server->on('propFind', [$this, 'handleGetProperties']);
+        $this->server->on('propPatch', [$this, 'handleUpdateProperties']);
+        $this->server->on('afterBind', [$this, 'sendFileIdHeader']);
+        $this->server->on('afterWriteContent', [$this, 'sendFileIdHeader']);
+        $this->server->on('afterMethod:GET', [$this,'httpGet']);
+        $this->server->on('afterMethod:GET', [$this, 'handleDownloadToken']);
+        $this->server->on('afterResponse', function($request, ResponseInterface $response) {
+            $body = $response->getBody();
+            if (is_resource($body)) {
+                fclose($body);
+            }
+        });
+        $this->server->on('beforeMove', [$this, 'checkMove']);
+    }
+
+    /**
+     * Plugin that checks if a move can actually be performed.
+     *
+     * @param string $source source path
+     * @param string $destination destination path
+     * @throws Forbidden
+     * @throws NotFound
+     */
+    function checkMove($source, $destination) {
+        $sourceNode = $this->tree->getNodeForPath($source);
+        if (!$sourceNode instanceof Node) {
+            return;
+        }
+        list($sourceDir,) = \Sabre\Uri\split($source);
+        list($destinationDir,) = \Sabre\Uri\split($destination);
+
+        if ($sourceDir !== $destinationDir) {
+            $sourceNodeFileInfo = $sourceNode->getFileInfo();
+            if ($sourceNodeFileInfo === null) {
+                throw new NotFound($source . ' does not exist');
+                }
+
+            if (!$sourceNodeFileInfo->isDeletable()) {
+                throw new Forbidden($source . " cannot be deleted");
+            }
+        }
+    }
+
+    /**
+     * This sets a cookie to be able to recognize the start of the download
+     * the content must not be longer than 32 characters and must only contain
+     * alphanumeric characters
+     *
+     * @param RequestInterface $request
+     * @param ResponseInterface $response
+     */
+    function handleDownloadToken(RequestInterface $request, ResponseInterface $response) {
+        $queryParams = $request->getQueryParameters();
+
+        /**
+         * this sets a cookie to be able to recognize the start of the download
+         * the content must not be longer than 32 characters and must only contain
+         * alphanumeric characters
+         */
+        if (isset($queryParams['downloadStartSecret'])) {
+            $token = $queryParams['downloadStartSecret'];
+            if (!isset($token[32])
+                && preg_match('!^[a-zA-Z0-9]+$!', $token) === 1) {
+                // FIXME: use $response->setHeader() instead
+                setcookie('ocDownloadStarted', $token, time() + 20, '/');
+            }
+        }
+    }
+
+    /**
+     * Add headers to file download
+     *
+     * @param RequestInterface $request
+     * @param ResponseInterface $response
+     */
+    function httpGet(RequestInterface $request, ResponseInterface $response) {
+        // Only handle valid files
+        $node = $this->tree->getNodeForPath($request->getPath());
+        if (!($node instanceof IFile)) return;
+
+        // adds a 'Content-Disposition: attachment' header in case no disposition
+        // header has been set before
+        if ($this->downloadAttachment &&
+            $response->getHeader('Content-Disposition') === null) {
+            $filename = $node->getName();
+            if ($this->request->isUserAgent(
+                [
+                    Request::USER_AGENT_IE,
+                    Request::USER_AGENT_ANDROID_MOBILE_CHROME,
+                    Request::USER_AGENT_FREEBOX,
+                ])) {
+                $response->addHeader('Content-Disposition', 'attachment; filename="' . rawurlencode($filename) . '"');
+            } else {
+                $response->addHeader('Content-Disposition', 'attachment; filename*=UTF-8\'\'' . rawurlencode($filename)
+                                                        . '; filename="' . rawurlencode($filename) . '"');
+            }
+        }
+
+        if ($node instanceof \OCA\DAV\Connector\Sabre\File) {
+            //Add OC-Checksum header
+            /** @var $node File */
+            $checksum = $node->getChecksum();
+            if ($checksum !== null && $checksum !== '') {
+                $response->addHeader('OC-Checksum', $checksum);
+            }
+        }
+    }
+
+    /**
+     * Adds all ownCloud-specific properties
+     *
+     * @param PropFind $propFind
+     * @param \Sabre\DAV\INode $node
+     * @return void
+     */
+    public function handleGetProperties(PropFind $propFind, \Sabre\DAV\INode $node) {
+
+        $httpRequest = $this->server->httpRequest;
+
+        if ($node instanceof \OCA\DAV\Connector\Sabre\Node) {
+            /**
+             * This was disabled, because it made dir listing throw an exception,
+             * so users were unable to navigate into folders where one subitem
+             * is blocked by the files_accesscontrol app, see:
+             * https://github.com/nextcloud/files_accesscontrol/issues/65
 			if (!$node->getFileInfo()->isReadable()) {
 				// avoid detecting files through this means
 				throw new NotFound();
 			}
-			 */
-
-			$propFind->handle(self::FILEID_PROPERTYNAME, function() use ($node) {
-				return $node->getFileId();
-			});
-
-			$propFind->handle(self::INTERNAL_FILEID_PROPERTYNAME, function() use ($node) {
-				return $node->getInternalFileId();
-			});
-
-			$propFind->handle(self::PERMISSIONS_PROPERTYNAME, function() use ($node) {
-				$perms = $node->getDavPermissions();
-				if ($this->isPublic) {
-					// remove mount information
-					$perms = str_replace(['S', 'M'], '', $perms);
-				}
-				return $perms;
-			});
-
-			$propFind->handle(self::SHARE_PERMISSIONS_PROPERTYNAME, function() use ($node, $httpRequest) {
-				return $node->getSharePermissions(
-					$httpRequest->getRawServerValue('PHP_AUTH_USER')
-				);
-			});
-
-			$propFind->handle(self::OCM_SHARE_PERMISSIONS_PROPERTYNAME, function() use ($node, $httpRequest) {
-				$ncPermissions = $node->getSharePermissions(
-					$httpRequest->getRawServerValue('PHP_AUTH_USER')
-				);
-				$ocmPermissions = $this->ncPermissions2ocmPermissions($ncPermissions);
-				return json_encode($ocmPermissions);
-			});
-
-			$propFind->handle(self::GETETAG_PROPERTYNAME, function() use ($node) {
-				return $node->getETag();
-			});
-
-			$propFind->handle(self::OWNER_ID_PROPERTYNAME, function() use ($node) {
-				$owner = $node->getOwner();
-				if (!$owner) {
-					return null;
-				} else {
-					return $owner->getUID();
-				}
-			});
-			$propFind->handle(self::OWNER_DISPLAY_NAME_PROPERTYNAME, function() use ($node) {
-				$owner = $node->getOwner();
-				if (!$owner) {
-					return null;
-				} else {
-					return $owner->getDisplayName();
-				}
-			});
-
-			$propFind->handle(self::HAS_PREVIEW_PROPERTYNAME, function () use ($node) {
-				return json_encode($this->previewManager->isAvailable($node->getFileInfo()));
-			});
-			$propFind->handle(self::SIZE_PROPERTYNAME, function() use ($node) {
-				return $node->getSize();
-			});
-			$propFind->handle(self::MOUNT_TYPE_PROPERTYNAME, function () use ($node) {
-				return $node->getFileInfo()->getMountPoint()->getMountType();
-			});
-
-			$propFind->handle(self::SHARE_NOTE, function() use ($node, $httpRequest) {
-				return $node->getNoteFromShare(
-					$httpRequest->getRawServerValue('PHP_AUTH_USER')
-				);
-			});
-		}
-
-		if ($node instanceof \OCA\DAV\Connector\Sabre\Node) {
-			$propFind->handle(self::DATA_FINGERPRINT_PROPERTYNAME, function() use ($node) {
-				return $this->config->getSystemValue('data-fingerprint', '');
-			});
-		}
-
-		if ($node instanceof \OCA\DAV\Connector\Sabre\File) {
-			$propFind->handle(self::DOWNLOADURL_PROPERTYNAME, function() use ($node) {
-				/** @var $node \OCA\DAV\Connector\Sabre\File */
-				try {
-					$directDownloadUrl = $node->getDirectDownload();
-					if (isset($directDownloadUrl['url'])) {
-						return $directDownloadUrl['url'];
-					}
-				} catch (StorageNotAvailableException $e) {
-					return false;
-				} catch (ForbiddenException $e) {
-					return false;
-				}
-				return false;
-			});
-
-			$propFind->handle(self::CHECKSUMS_PROPERTYNAME, function() use ($node) {
-				$checksum = $node->getChecksum();
-				if ($checksum === null || $checksum === '') {
-					return null;
-				}
-
-				return new ChecksumList($checksum);
-			});
-
-			$propFind->handle(self::CREATION_TIME_PROPERTYNAME, function() use ($node) {
-				return $node->getFileInfo()->getCreationTime();
-			});
-
-			$propFind->handle(self::UPLOAD_TIME_PROPERTYNAME, function() use ($node) {
-				return $node->getFileInfo()->getUploadTime();
-			});
-
-		}
-
-		if ($node instanceof \OCA\DAV\Connector\Sabre\Directory) {
-			$propFind->handle(self::SIZE_PROPERTYNAME, function() use ($node) {
-				return $node->getSize();
-			});
-
-			$propFind->handle(self::IS_ENCRYPTED_PROPERTYNAME, function() use ($node) {
-				return $node->getFileInfo()->isEncrypted() ? '1' : '0';
-			});
-		}
-	}
-
-	/**
-	 * translate Nextcloud permissions to OCM Permissions
-	 *
-	 * @param $ncPermissions
-	 * @return array
-	 */
-	protected function ncPermissions2ocmPermissions($ncPermissions) {
-
-		$ocmPermissions = [];
-
-		if ($ncPermissions & Constants::PERMISSION_SHARE) {
-			$ocmPermissions[] = 'share';
-		}
-
-		if ($ncPermissions & Constants::PERMISSION_READ) {
-			$ocmPermissions[] = 'read';
-		}
-
-		if (($ncPermissions & Constants::PERMISSION_CREATE) ||
-			($ncPermissions & Constants::PERMISSION_UPDATE)) {
-			$ocmPermissions[] = 'write';
-		}
-
-		return $ocmPermissions;
-
-	}
-
-	/**
-	 * Update ownCloud-specific properties
-	 *
-	 * @param string $path
-	 * @param PropPatch $propPatch
-	 *
-	 * @return void
-	 */
-	public function handleUpdateProperties($path, PropPatch $propPatch) {
-		$node = $this->tree->getNodeForPath($path);
-		if (!($node instanceof \OCA\DAV\Connector\Sabre\Node)) {
-			return;
-		}
-
-		$propPatch->handle(self::LASTMODIFIED_PROPERTYNAME, function($time) use ($node) {
-			if (empty($time)) {
-				return false;
-			}
-			$node->touch($time);
-			return true;
-		});
-		$propPatch->handle(self::GETETAG_PROPERTYNAME, function($etag) use ($node) {
-			if (empty($etag)) {
-				return false;
-			}
-			if ($node->setEtag($etag) !== -1) {
-				return true;
-			}
-			return false;
-		});
-		$propPatch->handle(self::CREATION_TIME_PROPERTYNAME, function($time) use ($node) {
-			if (empty($time)) {
-				return false;
-			}
-			$node->setCreationTime((int) $time);
-			return true;
-		});
-	}
-
-	/**
-	 * @param string $filePath
-	 * @param \Sabre\DAV\INode $node
-	 * @throws \Sabre\DAV\Exception\BadRequest
-	 */
-	public function sendFileIdHeader($filePath, \Sabre\DAV\INode $node = null) {
-		// chunked upload handling
-		if (isset($_SERVER['HTTP_OC_CHUNKED'])) {
-			list($path, $name) = \Sabre\Uri\split($filePath);
-			$info = \OC_FileChunking::decodeName($name);
-			if (!empty($info)) {
-				$filePath = $path . '/' . $info['name'];
-			}
-		}
-
-		// we get the node for the given $filePath here because in case of afterCreateFile $node is the parent folder
-		if (!$this->server->tree->nodeExists($filePath)) {
-			return;
-		}
-		$node = $this->server->tree->getNodeForPath($filePath);
-		if ($node instanceof \OCA\DAV\Connector\Sabre\Node) {
-			$fileId = $node->getFileId();
-			if (!is_null($fileId)) {
-				$this->server->httpResponse->setHeader('OC-FileId', $fileId);
-			}
-		}
-	}
+             */
+
+            $propFind->handle(self::FILEID_PROPERTYNAME, function() use ($node) {
+                return $node->getFileId();
+            });
+
+            $propFind->handle(self::INTERNAL_FILEID_PROPERTYNAME, function() use ($node) {
+                return $node->getInternalFileId();
+            });
+
+            $propFind->handle(self::PERMISSIONS_PROPERTYNAME, function() use ($node) {
+                $perms = $node->getDavPermissions();
+                if ($this->isPublic) {
+                    // remove mount information
+                    $perms = str_replace(['S', 'M'], '', $perms);
+                }
+                return $perms;
+            });
+
+            $propFind->handle(self::SHARE_PERMISSIONS_PROPERTYNAME, function() use ($node, $httpRequest) {
+                return $node->getSharePermissions(
+                    $httpRequest->getRawServerValue('PHP_AUTH_USER')
+                );
+            });
+
+            $propFind->handle(self::OCM_SHARE_PERMISSIONS_PROPERTYNAME, function() use ($node, $httpRequest) {
+                $ncPermissions = $node->getSharePermissions(
+                    $httpRequest->getRawServerValue('PHP_AUTH_USER')
+                );
+                $ocmPermissions = $this->ncPermissions2ocmPermissions($ncPermissions);
+                return json_encode($ocmPermissions);
+            });
+
+            $propFind->handle(self::GETETAG_PROPERTYNAME, function() use ($node) {
+                return $node->getETag();
+            });
+
+            $propFind->handle(self::OWNER_ID_PROPERTYNAME, function() use ($node) {
+                $owner = $node->getOwner();
+                if (!$owner) {
+                    return null;
+                } else {
+                    return $owner->getUID();
+                }
+            });
+            $propFind->handle(self::OWNER_DISPLAY_NAME_PROPERTYNAME, function() use ($node) {
+                $owner = $node->getOwner();
+                if (!$owner) {
+                    return null;
+                } else {
+                    return $owner->getDisplayName();
+                }
+            });
+
+            $propFind->handle(self::HAS_PREVIEW_PROPERTYNAME, function () use ($node) {
+                return json_encode($this->previewManager->isAvailable($node->getFileInfo()));
+            });
+            $propFind->handle(self::SIZE_PROPERTYNAME, function() use ($node) {
+                return $node->getSize();
+            });
+            $propFind->handle(self::MOUNT_TYPE_PROPERTYNAME, function () use ($node) {
+                return $node->getFileInfo()->getMountPoint()->getMountType();
+            });
+
+            $propFind->handle(self::SHARE_NOTE, function() use ($node, $httpRequest) {
+                return $node->getNoteFromShare(
+                    $httpRequest->getRawServerValue('PHP_AUTH_USER')
+                );
+            });
+        }
+
+        if ($node instanceof \OCA\DAV\Connector\Sabre\Node) {
+            $propFind->handle(self::DATA_FINGERPRINT_PROPERTYNAME, function() use ($node) {
+                return $this->config->getSystemValue('data-fingerprint', '');
+            });
+        }
+
+        if ($node instanceof \OCA\DAV\Connector\Sabre\File) {
+            $propFind->handle(self::DOWNLOADURL_PROPERTYNAME, function() use ($node) {
+                /** @var $node \OCA\DAV\Connector\Sabre\File */
+                try {
+                    $directDownloadUrl = $node->getDirectDownload();
+                    if (isset($directDownloadUrl['url'])) {
+                        return $directDownloadUrl['url'];
+                    }
+                } catch (StorageNotAvailableException $e) {
+                    return false;
+                } catch (ForbiddenException $e) {
+                    return false;
+                }
+                return false;
+            });
+
+            $propFind->handle(self::CHECKSUMS_PROPERTYNAME, function() use ($node) {
+                $checksum = $node->getChecksum();
+                if ($checksum === null || $checksum === '') {
+                    return null;
+                }
+
+                return new ChecksumList($checksum);
+            });
+
+            $propFind->handle(self::CREATION_TIME_PROPERTYNAME, function() use ($node) {
+                return $node->getFileInfo()->getCreationTime();
+            });
+
+            $propFind->handle(self::UPLOAD_TIME_PROPERTYNAME, function() use ($node) {
+                return $node->getFileInfo()->getUploadTime();
+            });
+
+        }
+
+        if ($node instanceof \OCA\DAV\Connector\Sabre\Directory) {
+            $propFind->handle(self::SIZE_PROPERTYNAME, function() use ($node) {
+                return $node->getSize();
+            });
+
+            $propFind->handle(self::IS_ENCRYPTED_PROPERTYNAME, function() use ($node) {
+                return $node->getFileInfo()->isEncrypted() ? '1' : '0';
+            });
+        }
+    }
+
+    /**
+     * translate Nextcloud permissions to OCM Permissions
+     *
+     * @param $ncPermissions
+     * @return array
+     */
+    protected function ncPermissions2ocmPermissions($ncPermissions) {
+
+        $ocmPermissions = [];
+
+        if ($ncPermissions & Constants::PERMISSION_SHARE) {
+            $ocmPermissions[] = 'share';
+        }
+
+        if ($ncPermissions & Constants::PERMISSION_READ) {
+            $ocmPermissions[] = 'read';
+        }
+
+        if (($ncPermissions & Constants::PERMISSION_CREATE) ||
+            ($ncPermissions & Constants::PERMISSION_UPDATE)) {
+            $ocmPermissions[] = 'write';
+        }
+
+        return $ocmPermissions;
+
+    }
+
+    /**
+     * Update ownCloud-specific properties
+     *
+     * @param string $path
+     * @param PropPatch $propPatch
+     *
+     * @return void
+     */
+    public function handleUpdateProperties($path, PropPatch $propPatch) {
+        $node = $this->tree->getNodeForPath($path);
+        if (!($node instanceof \OCA\DAV\Connector\Sabre\Node)) {
+            return;
+        }
+
+        $propPatch->handle(self::LASTMODIFIED_PROPERTYNAME, function($time) use ($node) {
+            if (empty($time)) {
+                return false;
+            }
+            $node->touch($time);
+            return true;
+        });
+        $propPatch->handle(self::GETETAG_PROPERTYNAME, function($etag) use ($node) {
+            if (empty($etag)) {
+                return false;
+            }
+            if ($node->setEtag($etag) !== -1) {
+                return true;
+            }
+            return false;
+        });
+        $propPatch->handle(self::CREATION_TIME_PROPERTYNAME, function($time) use ($node) {
+            if (empty($time)) {
+                return false;
+            }
+            $node->setCreationTime((int) $time);
+            return true;
+        });
+    }
+
+    /**
+     * @param string $filePath
+     * @param \Sabre\DAV\INode $node
+     * @throws \Sabre\DAV\Exception\BadRequest
+     */
+    public function sendFileIdHeader($filePath, \Sabre\DAV\INode $node = null) {
+        // chunked upload handling
+        if (isset($_SERVER['HTTP_OC_CHUNKED'])) {
+            list($path, $name) = \Sabre\Uri\split($filePath);
+            $info = \OC_FileChunking::decodeName($name);
+            if (!empty($info)) {
+                $filePath = $path . '/' . $info['name'];
+            }
+        }
+
+        // we get the node for the given $filePath here because in case of afterCreateFile $node is the parent folder
+        if (!$this->server->tree->nodeExists($filePath)) {
+            return;
+        }
+        $node = $this->server->tree->getNodeForPath($filePath);
+        if ($node instanceof \OCA\DAV\Connector\Sabre\Node) {
+            $fileId = $node->getFileId();
+            if (!is_null($fileId)) {
+                $this->server->httpResponse->setHeader('OC-FileId', $fileId);
+            }
+        }
+    }
 }

Spacing +9 added lines, -9 removed lines

@@ -177,7 +177,7 @@ 
 		$this->server->on('propPatch', [$this, 'handleUpdateProperties']);
 		$this->server->on('afterBind', [$this, 'sendFileIdHeader']);
 		$this->server->on('afterWriteContent', [$this, 'sendFileIdHeader']);
-		$this->server->on('afterMethod:GET', [$this,'httpGet']);
+		$this->server->on('afterMethod:GET', [$this, 'httpGet']);
 		$this->server->on('afterMethod:GET', [$this, 'handleDownloadToken']);
 		$this->server->on('afterResponse', function($request, ResponseInterface $response) {
 			$body = $response->getBody();
@@ -207,11 +207,11 @@ 
 		if ($sourceDir !== $destinationDir) {
 			$sourceNodeFileInfo = $sourceNode->getFileInfo();
 			if ($sourceNodeFileInfo === null) {
-				throw new NotFound($source . ' does not exist');
+				throw new NotFound($source.' does not exist');
  			}
 
 			if (!$sourceNodeFileInfo->isDeletable()) {
-				throw new Forbidden($source . " cannot be deleted");
+				throw new Forbidden($source." cannot be deleted");
 			}
 		}
 	}
@@ -264,10 +264,10 @@ 
 					Request::USER_AGENT_ANDROID_MOBILE_CHROME,
 					Request::USER_AGENT_FREEBOX,
 				])) {
-				$response->addHeader('Content-Disposition', 'attachment; filename="' . rawurlencode($filename) . '"');
+				$response->addHeader('Content-Disposition', 'attachment; filename="'.rawurlencode($filename).'"');
 			} else {
-				$response->addHeader('Content-Disposition', 'attachment; filename*=UTF-8\'\'' . rawurlencode($filename)
-													 . '; filename="' . rawurlencode($filename) . '"');
+				$response->addHeader('Content-Disposition', 'attachment; filename*=UTF-8\'\''.rawurlencode($filename)
+													 . '; filename="'.rawurlencode($filename).'"');
 			}
 		}
 
@@ -356,13 +356,13 @@ 
 				}
 			});
 
-			$propFind->handle(self::HAS_PREVIEW_PROPERTYNAME, function () use ($node) {
+			$propFind->handle(self::HAS_PREVIEW_PROPERTYNAME, function() use ($node) {
 				return json_encode($this->previewManager->isAvailable($node->getFileInfo()));
 			});
 			$propFind->handle(self::SIZE_PROPERTYNAME, function() use ($node) {
 				return $node->getSize();
 			});
-			$propFind->handle(self::MOUNT_TYPE_PROPERTYNAME, function () use ($node) {
+			$propFind->handle(self::MOUNT_TYPE_PROPERTYNAME, function() use ($node) {
 				return $node->getFileInfo()->getMountPoint()->getMountType();
 			});
 
@@ -502,7 +502,7 @@ 
 			list($path, $name) = \Sabre\Uri\split($filePath);
 			$info = \OC_FileChunking::decodeName($name);
 			if (!empty($info)) {
-				$filePath = $path . '/' . $info['name'];
+				$filePath = $path.'/'.$info['name'];
 			}
 		}
 

apps/dav/lib/Connector/Sabre/Node.php

Indentation +363 added lines, -363 removed lines

@@ -49,373 +49,373 @@
 
 abstract class Node implements \Sabre\DAV\INode {
 
-	/**
-	 * @var \OC\Files\View
-	 */
-	protected $fileView;
-
-	/**
-	 * The path to the current node
-	 *
-	 * @var string
-	 */
-	protected $path;
-
-	/**
-	 * node properties cache
-	 *
-	 * @var array
-	 */
-	protected $property_cache = null;
-
-	/**
-	 * @var \OCP\Files\FileInfo
-	 */
-	protected $info;
-
-	/**
-	 * @var IManager
-	 */
-	protected $shareManager;
-
-	/**
-	 * Sets up the node, expects a full path name
-	 *
-	 * @param \OC\Files\View $view
-	 * @param \OCP\Files\FileInfo $info
-	 * @param IManager $shareManager
-	 */
-	public function __construct(View $view, FileInfo $info, IManager $shareManager = null) {
-		$this->fileView = $view;
-		$this->path = $this->fileView->getRelativePath($info->getPath());
-		$this->info = $info;
-		if ($shareManager) {
-			$this->shareManager = $shareManager;
-		} else {
-			$this->shareManager = \OC::$server->getShareManager();
-		}
-	}
-
-	protected function refreshInfo() {
-		$this->info = $this->fileView->getFileInfo($this->path);
-	}
-
-	/**
-	 *  Returns the name of the node
-	 *
-	 * @return string
-	 */
-	public function getName() {
-		return $this->info->getName();
-	}
-
-	/**
-	 * Returns the full path
-	 *
-	 * @return string
-	 */
-	public function getPath() {
-		return $this->path;
-	}
-
-	/**
-	 * Renames the node
-	 *
-	 * @param string $name The new name
-	 * @throws \Sabre\DAV\Exception\BadRequest
-	 * @throws \Sabre\DAV\Exception\Forbidden
-	 */
-	public function setName($name) {
-
-		// rename is only allowed if the update privilege is granted
-		if (!$this->info->isUpdateable()) {
-			throw new \Sabre\DAV\Exception\Forbidden();
-		}
-
-		list($parentPath,) = \Sabre\Uri\split($this->path);
-		list(, $newName) = \Sabre\Uri\split($name);
-
-		// verify path of the target
-		$this->verifyPath();
-
-		$newPath = $parentPath . '/' . $newName;
-
-		if (!$this->fileView->rename($this->path, $newPath)) {
-			throw new \Sabre\DAV\Exception('Failed to rename '. $this->path . ' to ' . $newPath);
-		}
-
-		$this->path = $newPath;
-
-		$this->refreshInfo();
-	}
-
-	public function setPropertyCache($property_cache) {
-		$this->property_cache = $property_cache;
-	}
-
-	/**
-	 * Returns the last modification time, as a unix timestamp
-	 *
-	 * @return int timestamp as integer
-	 */
-	public function getLastModified() {
-		$timestamp = $this->info->getMtime();
-		if (!empty($timestamp)) {
-			return (int)$timestamp;
-		}
-		return $timestamp;
-	}
-
-	/**
-	 *  sets the last modification time of the file (mtime) to the value given
-	 *  in the second parameter or to now if the second param is empty.
-	 *  Even if the modification time is set to a custom value the access time is set to now.
-	 */
-	public function touch($mtime) {
-		$mtime = $this->sanitizeMtime($mtime);
-		$this->fileView->touch($this->path, $mtime);
-		$this->refreshInfo();
-	}
-
-	/**
-	 * Returns the ETag for a file
-	 *
-	 * An ETag is a unique identifier representing the current version of the
-	 * file. If the file changes, the ETag MUST change.  The ETag is an
-	 * arbitrary string, but MUST be surrounded by double-quotes.
-	 *
-	 * Return null if the ETag can not effectively be determined
-	 *
-	 * @return string
-	 */
-	public function getETag() {
-		return '"' . $this->info->getEtag() . '"';
-	}
-
-	/**
-	 * Sets the ETag
-	 *
-	 * @param string $etag
-	 *
-	 * @return int file id of updated file or -1 on failure
-	 */
-	public function setETag($etag) {
-		return $this->fileView->putFileInfo($this->path, ['etag' => $etag]);
-	}
-
-	public function setCreationTime(int $time) {
-		return $this->fileView->putFileInfo($this->path, ['creation_time' => $time]);
-	}
-
-	public function setUploadTime(int $time) {
-		return $this->fileView->putFileInfo($this->path, ['upload_time' => $time]);
-	}
-
-	/**
-	 * Returns the size of the node, in bytes
-	 *
-	 * @return integer
-	 */
-	public function getSize() {
-		return $this->info->getSize();
-	}
-
-	/**
-	 * Returns the cache's file id
-	 *
-	 * @return int
-	 */
-	public function getId() {
-		return $this->info->getId();
-	}
-
-	/**
-	 * @return string|null
-	 */
-	public function getFileId() {
-		if ($this->info->getId()) {
-			$instanceId = \OC_Util::getInstanceId();
-			$id = sprintf('%08d', $this->info->getId());
-			return $id . $instanceId;
-		}
-
-		return null;
-	}
-
-	/**
-	 * @return integer
-	 */
-	public function getInternalFileId() {
-		return $this->info->getId();
-	}
-
-	/**
-	 * @param string $user
-	 * @return int
-	 */
-	public function getSharePermissions($user) {
-
-		// check of we access a federated share
-		if ($user !== null) {
-			try {
-				$share = $this->shareManager->getShareByToken($user);
-				return $share->getPermissions();
-			} catch (ShareNotFound $e) {
-				// ignore
-			}
-		}
-
-		try {
-			$storage = $this->info->getStorage();
-		} catch (StorageNotAvailableException $e) {
-			$storage = null;
-		}
-
-		if ($storage && $storage->instanceOfStorage('\OCA\Files_Sharing\SharedStorage')) {
-			/** @var \OCA\Files_Sharing\SharedStorage $storage */
-			$permissions = (int)$storage->getShare()->getPermissions();
-		} else {
-			$permissions = $this->info->getPermissions();
-		}
-
-		/*
+    /**
+     * @var \OC\Files\View
+     */
+    protected $fileView;
+
+    /**
+     * The path to the current node
+     *
+     * @var string
+     */
+    protected $path;
+
+    /**
+     * node properties cache
+     *
+     * @var array
+     */
+    protected $property_cache = null;
+
+    /**
+     * @var \OCP\Files\FileInfo
+     */
+    protected $info;
+
+    /**
+     * @var IManager
+     */
+    protected $shareManager;
+
+    /**
+     * Sets up the node, expects a full path name
+     *
+     * @param \OC\Files\View $view
+     * @param \OCP\Files\FileInfo $info
+     * @param IManager $shareManager
+     */
+    public function __construct(View $view, FileInfo $info, IManager $shareManager = null) {
+        $this->fileView = $view;
+        $this->path = $this->fileView->getRelativePath($info->getPath());
+        $this->info = $info;
+        if ($shareManager) {
+            $this->shareManager = $shareManager;
+        } else {
+            $this->shareManager = \OC::$server->getShareManager();
+        }
+    }
+
+    protected function refreshInfo() {
+        $this->info = $this->fileView->getFileInfo($this->path);
+    }
+
+    /**
+     *  Returns the name of the node
+     *
+     * @return string
+     */
+    public function getName() {
+        return $this->info->getName();
+    }
+
+    /**
+     * Returns the full path
+     *
+     * @return string
+     */
+    public function getPath() {
+        return $this->path;
+    }
+
+    /**
+     * Renames the node
+     *
+     * @param string $name The new name
+     * @throws \Sabre\DAV\Exception\BadRequest
+     * @throws \Sabre\DAV\Exception\Forbidden
+     */
+    public function setName($name) {
+
+        // rename is only allowed if the update privilege is granted
+        if (!$this->info->isUpdateable()) {
+            throw new \Sabre\DAV\Exception\Forbidden();
+        }
+
+        list($parentPath,) = \Sabre\Uri\split($this->path);
+        list(, $newName) = \Sabre\Uri\split($name);
+
+        // verify path of the target
+        $this->verifyPath();
+
+        $newPath = $parentPath . '/' . $newName;
+
+        if (!$this->fileView->rename($this->path, $newPath)) {
+            throw new \Sabre\DAV\Exception('Failed to rename '. $this->path . ' to ' . $newPath);
+        }
+
+        $this->path = $newPath;
+
+        $this->refreshInfo();
+    }
+
+    public function setPropertyCache($property_cache) {
+        $this->property_cache = $property_cache;
+    }
+
+    /**
+     * Returns the last modification time, as a unix timestamp
+     *
+     * @return int timestamp as integer
+     */
+    public function getLastModified() {
+        $timestamp = $this->info->getMtime();
+        if (!empty($timestamp)) {
+            return (int)$timestamp;
+        }
+        return $timestamp;
+    }
+
+    /**
+     *  sets the last modification time of the file (mtime) to the value given
+     *  in the second parameter or to now if the second param is empty.
+     *  Even if the modification time is set to a custom value the access time is set to now.
+     */
+    public function touch($mtime) {
+        $mtime = $this->sanitizeMtime($mtime);
+        $this->fileView->touch($this->path, $mtime);
+        $this->refreshInfo();
+    }
+
+    /**
+     * Returns the ETag for a file
+     *
+     * An ETag is a unique identifier representing the current version of the
+     * file. If the file changes, the ETag MUST change.  The ETag is an
+     * arbitrary string, but MUST be surrounded by double-quotes.
+     *
+     * Return null if the ETag can not effectively be determined
+     *
+     * @return string
+     */
+    public function getETag() {
+        return '"' . $this->info->getEtag() . '"';
+    }
+
+    /**
+     * Sets the ETag
+     *
+     * @param string $etag
+     *
+     * @return int file id of updated file or -1 on failure
+     */
+    public function setETag($etag) {
+        return $this->fileView->putFileInfo($this->path, ['etag' => $etag]);
+    }
+
+    public function setCreationTime(int $time) {
+        return $this->fileView->putFileInfo($this->path, ['creation_time' => $time]);
+    }
+
+    public function setUploadTime(int $time) {
+        return $this->fileView->putFileInfo($this->path, ['upload_time' => $time]);
+    }
+
+    /**
+     * Returns the size of the node, in bytes
+     *
+     * @return integer
+     */
+    public function getSize() {
+        return $this->info->getSize();
+    }
+
+    /**
+     * Returns the cache's file id
+     *
+     * @return int
+     */
+    public function getId() {
+        return $this->info->getId();
+    }
+
+    /**
+     * @return string|null
+     */
+    public function getFileId() {
+        if ($this->info->getId()) {
+            $instanceId = \OC_Util::getInstanceId();
+            $id = sprintf('%08d', $this->info->getId());
+            return $id . $instanceId;
+        }
+
+        return null;
+    }
+
+    /**
+     * @return integer
+     */
+    public function getInternalFileId() {
+        return $this->info->getId();
+    }
+
+    /**
+     * @param string $user
+     * @return int
+     */
+    public function getSharePermissions($user) {
+
+        // check of we access a federated share
+        if ($user !== null) {
+            try {
+                $share = $this->shareManager->getShareByToken($user);
+                return $share->getPermissions();
+            } catch (ShareNotFound $e) {
+                // ignore
+            }
+        }
+
+        try {
+            $storage = $this->info->getStorage();
+        } catch (StorageNotAvailableException $e) {
+            $storage = null;
+        }
+
+        if ($storage && $storage->instanceOfStorage('\OCA\Files_Sharing\SharedStorage')) {
+            /** @var \OCA\Files_Sharing\SharedStorage $storage */
+            $permissions = (int)$storage->getShare()->getPermissions();
+        } else {
+            $permissions = $this->info->getPermissions();
+        }
+
+        /*
 		 * We can always share non moveable mount points with DELETE and UPDATE
 		 * Eventually we need to do this properly
 		 */
-		$mountpoint = $this->info->getMountPoint();
-		if (!($mountpoint instanceof MoveableMount)) {
-			$mountpointpath = $mountpoint->getMountPoint();
-			if (substr($mountpointpath, -1) === '/') {
-				$mountpointpath = substr($mountpointpath, 0, -1);
-			}
-
-			if (!$mountpoint->getOption('readonly', false) && $mountpointpath === $this->info->getPath()) {
-				$permissions |= \OCP\Constants::PERMISSION_DELETE | \OCP\Constants::PERMISSION_UPDATE;
-			}
-		}
-
-		/*
+        $mountpoint = $this->info->getMountPoint();
+        if (!($mountpoint instanceof MoveableMount)) {
+            $mountpointpath = $mountpoint->getMountPoint();
+            if (substr($mountpointpath, -1) === '/') {
+                $mountpointpath = substr($mountpointpath, 0, -1);
+            }
+
+            if (!$mountpoint->getOption('readonly', false) && $mountpointpath === $this->info->getPath()) {
+                $permissions |= \OCP\Constants::PERMISSION_DELETE | \OCP\Constants::PERMISSION_UPDATE;
+            }
+        }
+
+        /*
 		 * Files can't have create or delete permissions
 		 */
-		if ($this->info->getType() === \OCP\Files\FileInfo::TYPE_FILE) {
-			$permissions &= ~(\OCP\Constants::PERMISSION_CREATE | \OCP\Constants::PERMISSION_DELETE);
-		}
-
-		return $permissions;
-	}
-
-	/**
-	 * @param string $user
-	 * @return string
-	 */
-	public function getNoteFromShare($user) {
-		if ($user === null) {
-			return '';
-		}
-
-		$types = [
-			Share::SHARE_TYPE_USER,
-			Share::SHARE_TYPE_GROUP,
-			Share::SHARE_TYPE_CIRCLE,
-			Share::SHARE_TYPE_ROOM
-		];
-
-		foreach ($types as $shareType) {
-			$shares = $this->shareManager->getSharedWith($user, $shareType, $this, -1);
-			foreach ($shares as $share) {
-				$note = $share->getNote();
-				if($share->getShareOwner() !== $user && !empty($note)) {
-					return $note;
-				}
-			}
-		}
-
-		return '';
-	}
-
-	/**
-	 * @return string
-	 */
-	public function getDavPermissions() {
-		$p = '';
-		if ($this->info->isShared()) {
-			$p .= 'S';
-		}
-		if ($this->info->isShareable()) {
-			$p .= 'R';
-		}
-		if ($this->info->isMounted()) {
-			$p .= 'M';
-		}
-		if ($this->info->isReadable()) {
-			$p .= 'G';
-		}
-		if ($this->info->isDeletable()) {
-			$p .= 'D';
-		}
-		if ($this->info->isUpdateable()) {
-			$p .= 'NV'; // Renameable, Moveable
-		}
-		if ($this->info->getType() === \OCP\Files\FileInfo::TYPE_FILE) {
-			if ($this->info->isUpdateable()) {
-				$p .= 'W';
-			}
-		} else {
-			if ($this->info->isCreatable()) {
-				$p .= 'CK';
-			}
-		}
-		return $p;
-	}
-
-	public function getOwner() {
-		return $this->info->getOwner();
-	}
-
-	protected function verifyPath() {
-		try {
-			$fileName = basename($this->info->getPath());
-			$this->fileView->verifyPath($this->path, $fileName);
-		} catch (\OCP\Files\InvalidPathException $ex) {
-			throw new InvalidPath($ex->getMessage());
-		}
-	}
-
-	/**
-	 * @param int $type \OCP\Lock\ILockingProvider::LOCK_SHARED or \OCP\Lock\ILockingProvider::LOCK_EXCLUSIVE
-	 */
-	public function acquireLock($type) {
-		$this->fileView->lockFile($this->path, $type);
-	}
-
-	/**
-	 * @param int $type \OCP\Lock\ILockingProvider::LOCK_SHARED or \OCP\Lock\ILockingProvider::LOCK_EXCLUSIVE
-	 */
-	public function releaseLock($type) {
-		$this->fileView->unlockFile($this->path, $type);
-	}
-
-	/**
-	 * @param int $type \OCP\Lock\ILockingProvider::LOCK_SHARED or \OCP\Lock\ILockingProvider::LOCK_EXCLUSIVE
-	 */
-	public function changeLock($type) {
-		$this->fileView->changeLock($this->path, $type);
-	}
-
-	public function getFileInfo() {
-		return $this->info;
-	}
-
-	protected function sanitizeMtime($mtimeFromRequest) {
-		// In PHP 5.X "is_numeric" returns true for strings in hexadecimal
-		// notation. This is no longer the case in PHP 7.X, so this check
-		// ensures that strings with hexadecimal notations fail too in PHP 5.X.
-		$isHexadecimal = is_string($mtimeFromRequest) && preg_match('/^\s*0[xX]/', $mtimeFromRequest);
-		if ($isHexadecimal || !is_numeric($mtimeFromRequest)) {
-			throw new \InvalidArgumentException('X-OC-MTime header must be an integer (unix timestamp).');
-		}
-
-		return (int)$mtimeFromRequest;
-	}
+        if ($this->info->getType() === \OCP\Files\FileInfo::TYPE_FILE) {
+            $permissions &= ~(\OCP\Constants::PERMISSION_CREATE | \OCP\Constants::PERMISSION_DELETE);
+        }
+
+        return $permissions;
+    }
+
+    /**
+     * @param string $user
+     * @return string
+     */
+    public function getNoteFromShare($user) {
+        if ($user === null) {
+            return '';
+        }
+
+        $types = [
+            Share::SHARE_TYPE_USER,
+            Share::SHARE_TYPE_GROUP,
+            Share::SHARE_TYPE_CIRCLE,
+            Share::SHARE_TYPE_ROOM
+        ];
+
+        foreach ($types as $shareType) {
+            $shares = $this->shareManager->getSharedWith($user, $shareType, $this, -1);
+            foreach ($shares as $share) {
+                $note = $share->getNote();
+                if($share->getShareOwner() !== $user && !empty($note)) {
+                    return $note;
+                }
+            }
+        }
+
+        return '';
+    }
+
+    /**
+     * @return string
+     */
+    public function getDavPermissions() {
+        $p = '';
+        if ($this->info->isShared()) {
+            $p .= 'S';
+        }
+        if ($this->info->isShareable()) {
+            $p .= 'R';
+        }
+        if ($this->info->isMounted()) {
+            $p .= 'M';
+        }
+        if ($this->info->isReadable()) {
+            $p .= 'G';
+        }
+        if ($this->info->isDeletable()) {
+            $p .= 'D';
+        }
+        if ($this->info->isUpdateable()) {
+            $p .= 'NV'; // Renameable, Moveable
+        }
+        if ($this->info->getType() === \OCP\Files\FileInfo::TYPE_FILE) {
+            if ($this->info->isUpdateable()) {
+                $p .= 'W';
+            }
+        } else {
+            if ($this->info->isCreatable()) {
+                $p .= 'CK';
+            }
+        }
+        return $p;
+    }
+
+    public function getOwner() {
+        return $this->info->getOwner();
+    }
+
+    protected function verifyPath() {
+        try {
+            $fileName = basename($this->info->getPath());
+            $this->fileView->verifyPath($this->path, $fileName);
+        } catch (\OCP\Files\InvalidPathException $ex) {
+            throw new InvalidPath($ex->getMessage());
+        }
+    }
+
+    /**
+     * @param int $type \OCP\Lock\ILockingProvider::LOCK_SHARED or \OCP\Lock\ILockingProvider::LOCK_EXCLUSIVE
+     */
+    public function acquireLock($type) {
+        $this->fileView->lockFile($this->path, $type);
+    }
+
+    /**
+     * @param int $type \OCP\Lock\ILockingProvider::LOCK_SHARED or \OCP\Lock\ILockingProvider::LOCK_EXCLUSIVE
+     */
+    public function releaseLock($type) {
+        $this->fileView->unlockFile($this->path, $type);
+    }
+
+    /**
+     * @param int $type \OCP\Lock\ILockingProvider::LOCK_SHARED or \OCP\Lock\ILockingProvider::LOCK_EXCLUSIVE
+     */
+    public function changeLock($type) {
+        $this->fileView->changeLock($this->path, $type);
+    }
+
+    public function getFileInfo() {
+        return $this->info;
+    }
+
+    protected function sanitizeMtime($mtimeFromRequest) {
+        // In PHP 5.X "is_numeric" returns true for strings in hexadecimal
+        // notation. This is no longer the case in PHP 7.X, so this check
+        // ensures that strings with hexadecimal notations fail too in PHP 5.X.
+        $isHexadecimal = is_string($mtimeFromRequest) && preg_match('/^\s*0[xX]/', $mtimeFromRequest);
+        if ($isHexadecimal || !is_numeric($mtimeFromRequest)) {
+            throw new \InvalidArgumentException('X-OC-MTime header must be an integer (unix timestamp).');
+        }
+
+        return (int)$mtimeFromRequest;
+    }
 
 }

apps/dav/lib/Connector/Sabre/AppEnabledPlugin.php

Indentation +48 added lines, -48 removed lines

@@ -34,58 +34,58 @@
  */
 class AppEnabledPlugin extends ServerPlugin {
 
-	/**
-	 * Reference to main server object
-	 *
-	 * @var \Sabre\DAV\Server
-	 */
-	private $server;
+    /**
+     * Reference to main server object
+     *
+     * @var \Sabre\DAV\Server
+     */
+    private $server;
 
-	/**
-	 * @var string
-	 */
-	private $app;
+    /**
+     * @var string
+     */
+    private $app;
 
-	/**
-	 * @var \OCP\App\IAppManager
-	 */
-	private $appManager;
+    /**
+     * @var \OCP\App\IAppManager
+     */
+    private $appManager;
 
-	/**
-	 * @param string $app
-	 * @param \OCP\App\IAppManager $appManager
-	 */
-	public function __construct($app, IAppManager $appManager) {
-		$this->app = $app;
-		$this->appManager = $appManager;
-	}
+    /**
+     * @param string $app
+     * @param \OCP\App\IAppManager $appManager
+     */
+    public function __construct($app, IAppManager $appManager) {
+        $this->app = $app;
+        $this->appManager = $appManager;
+    }
 
-	/**
-	 * This initializes the plugin.
-	 *
-	 * This function is called by \Sabre\DAV\Server, after
-	 * addPlugin is called.
-	 *
-	 * This method should set up the required event subscriptions.
-	 *
-	 * @param \Sabre\DAV\Server $server
-	 * @return void
-	 */
-	public function initialize(\Sabre\DAV\Server $server) {
+    /**
+     * This initializes the plugin.
+     *
+     * This function is called by \Sabre\DAV\Server, after
+     * addPlugin is called.
+     *
+     * This method should set up the required event subscriptions.
+     *
+     * @param \Sabre\DAV\Server $server
+     * @return void
+     */
+    public function initialize(\Sabre\DAV\Server $server) {
 
-		$this->server = $server;
-		$this->server->on('beforeMethod', [$this, 'checkAppEnabled'], 30);
-	}
+        $this->server = $server;
+        $this->server->on('beforeMethod', [$this, 'checkAppEnabled'], 30);
+    }
 
-	/**
-	 * This method is called before any HTTP after auth and checks if the user has access to the app
-	 *
-	 * @throws \Sabre\DAV\Exception\Forbidden
-	 * @return bool
-	 */
-	public function checkAppEnabled() {
-		if (!$this->appManager->isEnabledForUser($this->app)) {
-			throw new Forbidden();
-		}
-	}
+    /**
+     * This method is called before any HTTP after auth and checks if the user has access to the app
+     *
+     * @throws \Sabre\DAV\Exception\Forbidden
+     * @return bool
+     */
+    public function checkAppEnabled() {
+        if (!$this->appManager->isEnabledForUser($this->app)) {
+            throw new Forbidden();
+        }
+    }
 }

apps/dav/lib/Connector/Sabre/ExceptionLoggerPlugin.php

Indentation +78 added lines, -78 removed lines

@@ -42,89 +42,89 @@
 use Sabre\DAV\Exception\ServiceUnavailable;
 
 class ExceptionLoggerPlugin extends \Sabre\DAV\ServerPlugin {
-	protected $nonFatalExceptions = [
-		NotAuthenticated::class => true,
-		// If tokenauth can throw this exception (which is basically as
-		// NotAuthenticated. So not fatal.
-		PasswordLoginForbidden::class => true,
-		// basically a NotAuthenticated
-		InvalidSyncToken::class => true,
-		// the sync client uses this to find out whether files exist,
-		// so it is not always an error, log it as debug
-		NotFound::class => true,
-		// this one mostly happens when the same file is uploaded at
-		// exactly the same time from two clients, only one client
-		// wins, the second one gets "Precondition failed"
-		PreconditionFailed::class => true,
-		// forbidden can be expected when trying to upload to
-		// read-only folders for example
-		Forbidden::class => true,
-		// Happens when an external storage or federated share is temporarily
-		// not available
-		StorageNotAvailableException::class => true,
-		// happens if some a client uses the wrong method for a given URL
-		// the error message itself is visible on the client side anyways
-		NotImplemented::class => true,
-		// happens when the parent directory is not present (for example when a
-		// move is done to a non-existent directory)
-		Conflict::class => true,
-		// happens when a certain method is not allowed to be called
-		// for example creating a folder that already exists
-		MethodNotAllowed::class => true,
-		// A locked file is perfectly valid and can happen in various cases
-		FileLocked::class => true,
-	];
+    protected $nonFatalExceptions = [
+        NotAuthenticated::class => true,
+        // If tokenauth can throw this exception (which is basically as
+        // NotAuthenticated. So not fatal.
+        PasswordLoginForbidden::class => true,
+        // basically a NotAuthenticated
+        InvalidSyncToken::class => true,
+        // the sync client uses this to find out whether files exist,
+        // so it is not always an error, log it as debug
+        NotFound::class => true,
+        // this one mostly happens when the same file is uploaded at
+        // exactly the same time from two clients, only one client
+        // wins, the second one gets "Precondition failed"
+        PreconditionFailed::class => true,
+        // forbidden can be expected when trying to upload to
+        // read-only folders for example
+        Forbidden::class => true,
+        // Happens when an external storage or federated share is temporarily
+        // not available
+        StorageNotAvailableException::class => true,
+        // happens if some a client uses the wrong method for a given URL
+        // the error message itself is visible on the client side anyways
+        NotImplemented::class => true,
+        // happens when the parent directory is not present (for example when a
+        // move is done to a non-existent directory)
+        Conflict::class => true,
+        // happens when a certain method is not allowed to be called
+        // for example creating a folder that already exists
+        MethodNotAllowed::class => true,
+        // A locked file is perfectly valid and can happen in various cases
+        FileLocked::class => true,
+    ];
 
-	/** @var string */
-	private $appName;
+    /** @var string */
+    private $appName;
 
-	/** @var ILogger */
-	private $logger;
+    /** @var ILogger */
+    private $logger;
 
-	/**
-	 * @param string $loggerAppName app name to use when logging
-	 * @param ILogger $logger
-	 */
-	public function __construct($loggerAppName, $logger) {
-		$this->appName = $loggerAppName;
-		$this->logger = $logger;
-	}
+    /**
+     * @param string $loggerAppName app name to use when logging
+     * @param ILogger $logger
+     */
+    public function __construct($loggerAppName, $logger) {
+        $this->appName = $loggerAppName;
+        $this->logger = $logger;
+    }
 
-	/**
-	 * This initializes the plugin.
-	 *
-	 * This function is called by \Sabre\DAV\Server, after
-	 * addPlugin is called.
-	 *
-	 * This method should set up the required event subscriptions.
-	 *
-	 * @param \Sabre\DAV\Server $server
-	 * @return void
-	 */
-	public function initialize(\Sabre\DAV\Server $server) {
+    /**
+     * This initializes the plugin.
+     *
+     * This function is called by \Sabre\DAV\Server, after
+     * addPlugin is called.
+     *
+     * This method should set up the required event subscriptions.
+     *
+     * @param \Sabre\DAV\Server $server
+     * @return void
+     */
+    public function initialize(\Sabre\DAV\Server $server) {
 
-		$server->on('exception', [$this, 'logException'], 10);
-	}
+        $server->on('exception', [$this, 'logException'], 10);
+    }
 
-	/**
-	 * Log exception
-	 *
-	 */
-	public function logException(\Exception $ex) {
-		$exceptionClass = get_class($ex);
-		$level = ILogger::FATAL;
-		if (isset($this->nonFatalExceptions[$exceptionClass]) ||
-			(
-				$exceptionClass === ServiceUnavailable::class &&
-				$ex->getMessage() === 'System in maintenance mode.'
-			)
-		) {
-			$level = ILogger::DEBUG;
-		}
+    /**
+     * Log exception
+     *
+     */
+    public function logException(\Exception $ex) {
+        $exceptionClass = get_class($ex);
+        $level = ILogger::FATAL;
+        if (isset($this->nonFatalExceptions[$exceptionClass]) ||
+            (
+                $exceptionClass === ServiceUnavailable::class &&
+                $ex->getMessage() === 'System in maintenance mode.'
+            )
+        ) {
+            $level = ILogger::DEBUG;
+        }
 
-		$this->logger->logException($ex, [
-			'app' => $this->appName,
-			'level' => $level,
-		]);
-	}
+        $this->logger->logException($ex, [
+            'app' => $this->appName,
+            'level' => $level,
+        ]);
+    }
 }

apps/dav/lib/Connector/Sabre/FilesReportPlugin.php

Indentation +394 added lines, -394 removed lines

@@ -46,398 +46,398 @@
 
 class FilesReportPlugin extends ServerPlugin {
 
-	// namespace
-	const NS_OWNCLOUD = 'http://owncloud.org/ns';
-	const REPORT_NAME            = '{http://owncloud.org/ns}filter-files';
-	const SYSTEMTAG_PROPERTYNAME = '{http://owncloud.org/ns}systemtag';
-	const CIRCLE_PROPERTYNAME = '{http://owncloud.org/ns}circle';
-
-	/**
-	 * Reference to main server object
-	 *
-	 * @var \Sabre\DAV\Server
-	 */
-	private $server;
-
-	/**
-	 * @var Tree
-	 */
-	private $tree;
-
-	/**
-	 * @var View
-	 */
-	private $fileView;
-
-	/**
-	 * @var ISystemTagManager
-	 */
-	private $tagManager;
-
-	/**
-	 * @var ISystemTagObjectMapper
-	 */
-	private $tagMapper;
-
-	/**
-	 * Manager for private tags
-	 *
-	 * @var ITagManager
-	 */
-	private $fileTagger;
-
-	/**
-	 * @var IUserSession
-	 */
-	private $userSession;
-
-	/**
-	 * @var IGroupManager
-	 */
-	private $groupManager;
-
-	/**
-	 * @var Folder
-	 */
-	private $userFolder;
-
-	/**
-	 * @var IAppManager
-	 */
-	private $appManager;
-
-	/**
-	 * @param Tree $tree
-	 * @param View $view
-	 * @param ISystemTagManager $tagManager
-	 * @param ISystemTagObjectMapper $tagMapper
-	 * @param ITagManager $fileTagger manager for private tags
-	 * @param IUserSession $userSession
-	 * @param IGroupManager $groupManager
-	 * @param Folder $userFolder
-	 * @param IAppManager $appManager
-	 */
-	public function __construct(Tree $tree,
-								View $view,
-								ISystemTagManager $tagManager,
-								ISystemTagObjectMapper $tagMapper,
-								ITagManager $fileTagger,
-								IUserSession $userSession,
-								IGroupManager $groupManager,
-								Folder $userFolder,
-								IAppManager $appManager
-	) {
-		$this->tree = $tree;
-		$this->fileView = $view;
-		$this->tagManager = $tagManager;
-		$this->tagMapper = $tagMapper;
-		$this->fileTagger = $fileTagger;
-		$this->userSession = $userSession;
-		$this->groupManager = $groupManager;
-		$this->userFolder = $userFolder;
-		$this->appManager = $appManager;
-	}
-
-	/**
-	 * This initializes the plugin.
-	 *
-	 * This function is called by \Sabre\DAV\Server, after
-	 * addPlugin is called.
-	 *
-	 * This method should set up the required event subscriptions.
-	 *
-	 * @param \Sabre\DAV\Server $server
-	 * @return void
-	 */
-	public function initialize(\Sabre\DAV\Server $server) {
-
-		$server->xml->namespaceMap[self::NS_OWNCLOUD] = 'oc';
-
-		$this->server = $server;
-		$this->server->on('report', [$this, 'onReport']);
-	}
-
-	/**
-	 * Returns a list of reports this plugin supports.
-	 *
-	 * This will be used in the {DAV:}supported-report-set property.
-	 *
-	 * @param string $uri
-	 * @return array
-	 */
-	public function getSupportedReportSet($uri) {
-		return [self::REPORT_NAME];
-	}
-
-	/**
-	 * REPORT operations to look for files
-	 *
-	 * @param string $reportName
-	 * @param $report
-	 * @param string $uri
-	 * @return bool
-	 * @throws BadRequest
-	 * @throws PreconditionFailed
-	 * @internal param $ [] $report
-	 */
-	public function onReport($reportName, $report, $uri) {
-		$reportTargetNode = $this->server->tree->getNodeForPath($uri);
-		if (!$reportTargetNode instanceof Directory || $reportName !== self::REPORT_NAME) {
-			return;
-		}
-
-		$ns = '{' . $this::NS_OWNCLOUD . '}';
-		$requestedProps = [];
-		$filterRules = [];
-
-		// parse report properties and gather filter info
-		foreach ($report as $reportProps) {
-			$name = $reportProps['name'];
-			if ($name === $ns . 'filter-rules') {
-				$filterRules = $reportProps['value'];
-			} else if ($name === '{DAV:}prop') {
-				// propfind properties
-				foreach ($reportProps['value'] as $propVal) {
-					$requestedProps[] = $propVal['name'];
-				}
-			}
-		}
-
-		if (empty($filterRules)) {
-			// an empty filter would return all existing files which would be slow
-			throw new BadRequest('Missing filter-rule block in request');
-		}
-
-		// gather all file ids matching filter
-		try {
-			$resultFileIds = $this->processFilterRules($filterRules);
-		} catch (TagNotFoundException $e) {
-			throw new PreconditionFailed('Cannot filter by non-existing tag', 0, $e);
-		}
-
-		// find sabre nodes by file id, restricted to the root node path
-		$results = $this->findNodesByFileIds($reportTargetNode, $resultFileIds);
-
-		$filesUri = $this->getFilesBaseUri($uri, $reportTargetNode->getPath());
-		$responses = $this->prepareResponses($filesUri, $requestedProps, $results);
-
-		$xml = $this->server->xml->write(
-			'{DAV:}multistatus',
-			new MultiStatus($responses)
-		);
-
-		$this->server->httpResponse->setStatus(207);
-		$this->server->httpResponse->setHeader('Content-Type', 'application/xml; charset=utf-8');
-		$this->server->httpResponse->setBody($xml);
-
-		return false;
-	}
-
-	/**
-	 * Returns the base uri of the files root by removing
-	 * the subpath from the URI
-	 *
-	 * @param string $uri URI from this request
-	 * @param string $subPath subpath to remove from the URI
-	 *
-	 * @return string files base uri
-	 */
-	private function getFilesBaseUri($uri, $subPath) {
-		$uri = trim($uri, '/');
-		$subPath = trim($subPath, '/');
-		if (empty($subPath)) {
-			$filesUri = $uri;
-		} else {
-			$filesUri = substr($uri, 0, strlen($uri) - strlen($subPath));
-		}
-		$filesUri = trim($filesUri, '/');
-		if (empty($filesUri)) {
-			return '';
-		}
-		return '/' . $filesUri;
-	}
-
-	/**
-	 * Find file ids matching the given filter rules
-	 *
-	 * @param array $filterRules
-	 * @return array array of unique file id results
-	 *
-	 * @throws TagNotFoundException whenever a tag was not found
-	 */
-	protected function processFilterRules($filterRules) {
-		$ns = '{' . $this::NS_OWNCLOUD . '}';
-		$resultFileIds = null;
-		$systemTagIds = [];
-		$circlesIds = [];
-		$favoriteFilter = null;
-		foreach ($filterRules as $filterRule) {
-			if ($filterRule['name'] === $ns . 'systemtag') {
-				$systemTagIds[] = $filterRule['value'];
-			}
-			if ($filterRule['name'] === self::CIRCLE_PROPERTYNAME) {
-				$circlesIds[] = $filterRule['value'];
-			}
-			if ($filterRule['name'] === $ns . 'favorite') {
-				$favoriteFilter = true;
-			}
-
-		}
-
-		if ($favoriteFilter !== null) {
-			$resultFileIds = $this->fileTagger->load('files')->getFavorites();
-			if (empty($resultFileIds)) {
-				return [];
-			}
-		}
-
-		if (!empty($systemTagIds)) {
-			$fileIds = $this->getSystemTagFileIds($systemTagIds);
-			if (empty($resultFileIds)) {
-				$resultFileIds = $fileIds;
-			} else {
-				$resultFileIds = array_intersect($fileIds, $resultFileIds);
-			}
-		}
-
-		if (!empty($circlesIds)) {
-			$fileIds = $this->getCirclesFileIds($circlesIds);
-			if (empty($resultFileIds)) {
-				$resultFileIds = $fileIds;
-			} else {
-				$resultFileIds = array_intersect($fileIds, $resultFileIds);
-			}
-		}
-
-		return $resultFileIds;
-	}
-
-	private function getSystemTagFileIds($systemTagIds) {
-		$resultFileIds = null;
-
-		// check user permissions, if applicable
-		if (!$this->isAdmin()) {
-			// check visibility/permission
-			$tags = $this->tagManager->getTagsByIds($systemTagIds);
-			$unknownTagIds = [];
-			foreach ($tags as $tag) {
-				if (!$tag->isUserVisible()) {
-					$unknownTagIds[] = $tag->getId();
-				}
-			}
-
-			if (!empty($unknownTagIds)) {
-				throw new TagNotFoundException('Tag with ids ' . implode(', ', $unknownTagIds) . ' not found');
-			}
-		}
-
-		// fetch all file ids and intersect them
-		foreach ($systemTagIds as $systemTagId) {
-			$fileIds = $this->tagMapper->getObjectIdsForTags($systemTagId, 'files');
-
-			if (empty($fileIds)) {
-				// This tag has no files, nothing can ever show up
-				return [];
-			}
-
-			// first run ?
-			if ($resultFileIds === null) {
-				$resultFileIds = $fileIds;
-			} else {
-				$resultFileIds = array_intersect($resultFileIds, $fileIds);
-			}
-
-			if (empty($resultFileIds)) {
-				// Empty intersection, nothing can show up anymore
-				return [];
-			}
-		}
-		return $resultFileIds;
-	}
-
-	/**
-	 * @suppress PhanUndeclaredClassMethod
-	 * @param array $circlesIds
-	 * @return array
-	 */
-	private function getCirclesFileIds(array $circlesIds) {
-		if (!$this->appManager->isEnabledForUser('circles') || !class_exists('\OCA\Circles\Api\v1\Circles')) {
-			return [];
-		}
-		return \OCA\Circles\Api\v1\Circles::getFilesForCircles($circlesIds);
-	}
-
-
-	/**
-	 * Prepare propfind response for the given nodes
-	 *
-	 * @param string $filesUri $filesUri URI leading to root of the files URI,
-	 * with a leading slash but no trailing slash
-	 * @param string[] $requestedProps requested properties
-	 * @param Node[] nodes nodes for which to fetch and prepare responses
-	 * @return Response[]
-	 */
-	public function prepareResponses($filesUri, $requestedProps, $nodes) {
-		$responses = [];
-		foreach ($nodes as $node) {
-			$propFind = new PropFind($filesUri . $node->getPath(), $requestedProps);
-
-			$this->server->getPropertiesByNode($propFind, $node);
-			// copied from Sabre Server's getPropertiesForPath
-			$result = $propFind->getResultForMultiStatus();
-			$result['href'] = $propFind->getPath();
-
-			$resourceType = $this->server->getResourceTypeForNode($node);
-			if (in_array('{DAV:}collection', $resourceType) || in_array('{DAV:}principal', $resourceType)) {
-				$result['href'] .= '/';
-			}
-
-			$responses[] = new Response(
-				rtrim($this->server->getBaseUri(), '/') . $filesUri . $node->getPath(),
-				$result,
-				200
-			);
-		}
-		return $responses;
-	}
-
-	/**
-	 * Find Sabre nodes by file ids
-	 *
-	 * @param Node $rootNode root node for search
-	 * @param array $fileIds file ids
-	 * @return Node[] array of Sabre nodes
-	 */
-	public function findNodesByFileIds($rootNode, $fileIds) {
-		$folder = $this->userFolder;
-		if (trim($rootNode->getPath(), '/') !== '') {
-			$folder = $folder->get($rootNode->getPath());
-		}
-
-		$results = [];
-		foreach ($fileIds as $fileId) {
-			$entry = $folder->getById($fileId);
-			if ($entry) {
-				$entry = current($entry);
-				if ($entry instanceof \OCP\Files\File) {
-					$results[] = new File($this->fileView, $entry);
-				} else if ($entry instanceof \OCP\Files\Folder) {
-					$results[] = new Directory($this->fileView, $entry);
-				}
-			}
-		}
-
-		return $results;
-	}
-
-	/**
-	 * Returns whether the currently logged in user is an administrator
-	 */
-	private function isAdmin() {
-		$user = $this->userSession->getUser();
-		if ($user !== null) {
-			return $this->groupManager->isAdmin($user->getUID());
-		}
-		return false;
-	}
+    // namespace
+    const NS_OWNCLOUD = 'http://owncloud.org/ns';
+    const REPORT_NAME            = '{http://owncloud.org/ns}filter-files';
+    const SYSTEMTAG_PROPERTYNAME = '{http://owncloud.org/ns}systemtag';
+    const CIRCLE_PROPERTYNAME = '{http://owncloud.org/ns}circle';
+
+    /**
+     * Reference to main server object
+     *
+     * @var \Sabre\DAV\Server
+     */
+    private $server;
+
+    /**
+     * @var Tree
+     */
+    private $tree;
+
+    /**
+     * @var View
+     */
+    private $fileView;
+
+    /**
+     * @var ISystemTagManager
+     */
+    private $tagManager;
+
+    /**
+     * @var ISystemTagObjectMapper
+     */
+    private $tagMapper;
+
+    /**
+     * Manager for private tags
+     *
+     * @var ITagManager
+     */
+    private $fileTagger;
+
+    /**
+     * @var IUserSession
+     */
+    private $userSession;
+
+    /**
+     * @var IGroupManager
+     */
+    private $groupManager;
+
+    /**
+     * @var Folder
+     */
+    private $userFolder;
+
+    /**
+     * @var IAppManager
+     */
+    private $appManager;
+
+    /**
+     * @param Tree $tree
+     * @param View $view
+     * @param ISystemTagManager $tagManager
+     * @param ISystemTagObjectMapper $tagMapper
+     * @param ITagManager $fileTagger manager for private tags
+     * @param IUserSession $userSession
+     * @param IGroupManager $groupManager
+     * @param Folder $userFolder
+     * @param IAppManager $appManager
+     */
+    public function __construct(Tree $tree,
+                                View $view,
+                                ISystemTagManager $tagManager,
+                                ISystemTagObjectMapper $tagMapper,
+                                ITagManager $fileTagger,
+                                IUserSession $userSession,
+                                IGroupManager $groupManager,
+                                Folder $userFolder,
+                                IAppManager $appManager
+    ) {
+        $this->tree = $tree;
+        $this->fileView = $view;
+        $this->tagManager = $tagManager;
+        $this->tagMapper = $tagMapper;
+        $this->fileTagger = $fileTagger;
+        $this->userSession = $userSession;
+        $this->groupManager = $groupManager;
+        $this->userFolder = $userFolder;
+        $this->appManager = $appManager;
+    }
+
+    /**
+     * This initializes the plugin.
+     *
+     * This function is called by \Sabre\DAV\Server, after
+     * addPlugin is called.
+     *
+     * This method should set up the required event subscriptions.
+     *
+     * @param \Sabre\DAV\Server $server
+     * @return void
+     */
+    public function initialize(\Sabre\DAV\Server $server) {
+
+        $server->xml->namespaceMap[self::NS_OWNCLOUD] = 'oc';
+
+        $this->server = $server;
+        $this->server->on('report', [$this, 'onReport']);
+    }
+
+    /**
+     * Returns a list of reports this plugin supports.
+     *
+     * This will be used in the {DAV:}supported-report-set property.
+     *
+     * @param string $uri
+     * @return array
+     */
+    public function getSupportedReportSet($uri) {
+        return [self::REPORT_NAME];
+    }
+
+    /**
+     * REPORT operations to look for files
+     *
+     * @param string $reportName
+     * @param $report
+     * @param string $uri
+     * @return bool
+     * @throws BadRequest
+     * @throws PreconditionFailed
+     * @internal param $ [] $report
+     */
+    public function onReport($reportName, $report, $uri) {
+        $reportTargetNode = $this->server->tree->getNodeForPath($uri);
+        if (!$reportTargetNode instanceof Directory || $reportName !== self::REPORT_NAME) {
+            return;
+        }
+
+        $ns = '{' . $this::NS_OWNCLOUD . '}';
+        $requestedProps = [];
+        $filterRules = [];
+
+        // parse report properties and gather filter info
+        foreach ($report as $reportProps) {
+            $name = $reportProps['name'];
+            if ($name === $ns . 'filter-rules') {
+                $filterRules = $reportProps['value'];
+            } else if ($name === '{DAV:}prop') {
+                // propfind properties
+                foreach ($reportProps['value'] as $propVal) {
+                    $requestedProps[] = $propVal['name'];
+                }
+            }
+        }
+
+        if (empty($filterRules)) {
+            // an empty filter would return all existing files which would be slow
+            throw new BadRequest('Missing filter-rule block in request');
+        }
+
+        // gather all file ids matching filter
+        try {
+            $resultFileIds = $this->processFilterRules($filterRules);
+        } catch (TagNotFoundException $e) {
+            throw new PreconditionFailed('Cannot filter by non-existing tag', 0, $e);
+        }
+
+        // find sabre nodes by file id, restricted to the root node path
+        $results = $this->findNodesByFileIds($reportTargetNode, $resultFileIds);
+
+        $filesUri = $this->getFilesBaseUri($uri, $reportTargetNode->getPath());
+        $responses = $this->prepareResponses($filesUri, $requestedProps, $results);
+
+        $xml = $this->server->xml->write(
+            '{DAV:}multistatus',
+            new MultiStatus($responses)
+        );
+
+        $this->server->httpResponse->setStatus(207);
+        $this->server->httpResponse->setHeader('Content-Type', 'application/xml; charset=utf-8');
+        $this->server->httpResponse->setBody($xml);
+
+        return false;
+    }
+
+    /**
+     * Returns the base uri of the files root by removing
+     * the subpath from the URI
+     *
+     * @param string $uri URI from this request
+     * @param string $subPath subpath to remove from the URI
+     *
+     * @return string files base uri
+     */
+    private function getFilesBaseUri($uri, $subPath) {
+        $uri = trim($uri, '/');
+        $subPath = trim($subPath, '/');
+        if (empty($subPath)) {
+            $filesUri = $uri;
+        } else {
+            $filesUri = substr($uri, 0, strlen($uri) - strlen($subPath));
+        }
+        $filesUri = trim($filesUri, '/');
+        if (empty($filesUri)) {
+            return '';
+        }
+        return '/' . $filesUri;
+    }
+
+    /**
+     * Find file ids matching the given filter rules
+     *
+     * @param array $filterRules
+     * @return array array of unique file id results
+     *
+     * @throws TagNotFoundException whenever a tag was not found
+     */
+    protected function processFilterRules($filterRules) {
+        $ns = '{' . $this::NS_OWNCLOUD . '}';
+        $resultFileIds = null;
+        $systemTagIds = [];
+        $circlesIds = [];
+        $favoriteFilter = null;
+        foreach ($filterRules as $filterRule) {
+            if ($filterRule['name'] === $ns . 'systemtag') {
+                $systemTagIds[] = $filterRule['value'];
+            }
+            if ($filterRule['name'] === self::CIRCLE_PROPERTYNAME) {
+                $circlesIds[] = $filterRule['value'];
+            }
+            if ($filterRule['name'] === $ns . 'favorite') {
+                $favoriteFilter = true;
+            }
+
+        }
+
+        if ($favoriteFilter !== null) {
+            $resultFileIds = $this->fileTagger->load('files')->getFavorites();
+            if (empty($resultFileIds)) {
+                return [];
+            }
+        }
+
+        if (!empty($systemTagIds)) {
+            $fileIds = $this->getSystemTagFileIds($systemTagIds);
+            if (empty($resultFileIds)) {
+                $resultFileIds = $fileIds;
+            } else {
+                $resultFileIds = array_intersect($fileIds, $resultFileIds);
+            }
+        }
+
+        if (!empty($circlesIds)) {
+            $fileIds = $this->getCirclesFileIds($circlesIds);
+            if (empty($resultFileIds)) {
+                $resultFileIds = $fileIds;
+            } else {
+                $resultFileIds = array_intersect($fileIds, $resultFileIds);
+            }
+        }
+
+        return $resultFileIds;
+    }
+
+    private function getSystemTagFileIds($systemTagIds) {
+        $resultFileIds = null;
+
+        // check user permissions, if applicable
+        if (!$this->isAdmin()) {
+            // check visibility/permission
+            $tags = $this->tagManager->getTagsByIds($systemTagIds);
+            $unknownTagIds = [];
+            foreach ($tags as $tag) {
+                if (!$tag->isUserVisible()) {
+                    $unknownTagIds[] = $tag->getId();
+                }
+            }
+
+            if (!empty($unknownTagIds)) {
+                throw new TagNotFoundException('Tag with ids ' . implode(', ', $unknownTagIds) . ' not found');
+            }
+        }
+
+        // fetch all file ids and intersect them
+        foreach ($systemTagIds as $systemTagId) {
+            $fileIds = $this->tagMapper->getObjectIdsForTags($systemTagId, 'files');
+
+            if (empty($fileIds)) {
+                // This tag has no files, nothing can ever show up
+                return [];
+            }
+
+            // first run ?
+            if ($resultFileIds === null) {
+                $resultFileIds = $fileIds;
+            } else {
+                $resultFileIds = array_intersect($resultFileIds, $fileIds);
+            }
+
+            if (empty($resultFileIds)) {
+                // Empty intersection, nothing can show up anymore
+                return [];
+            }
+        }
+        return $resultFileIds;
+    }
+
+    /**
+     * @suppress PhanUndeclaredClassMethod
+     * @param array $circlesIds
+     * @return array
+     */
+    private function getCirclesFileIds(array $circlesIds) {
+        if (!$this->appManager->isEnabledForUser('circles') || !class_exists('\OCA\Circles\Api\v1\Circles')) {
+            return [];
+        }
+        return \OCA\Circles\Api\v1\Circles::getFilesForCircles($circlesIds);
+    }
+
+
+    /**
+     * Prepare propfind response for the given nodes
+     *
+     * @param string $filesUri $filesUri URI leading to root of the files URI,
+     * with a leading slash but no trailing slash
+     * @param string[] $requestedProps requested properties
+     * @param Node[] nodes nodes for which to fetch and prepare responses
+     * @return Response[]
+     */
+    public function prepareResponses($filesUri, $requestedProps, $nodes) {
+        $responses = [];
+        foreach ($nodes as $node) {
+            $propFind = new PropFind($filesUri . $node->getPath(), $requestedProps);
+
+            $this->server->getPropertiesByNode($propFind, $node);
+            // copied from Sabre Server's getPropertiesForPath
+            $result = $propFind->getResultForMultiStatus();
+            $result['href'] = $propFind->getPath();
+
+            $resourceType = $this->server->getResourceTypeForNode($node);
+            if (in_array('{DAV:}collection', $resourceType) || in_array('{DAV:}principal', $resourceType)) {
+                $result['href'] .= '/';
+            }
+
+            $responses[] = new Response(
+                rtrim($this->server->getBaseUri(), '/') . $filesUri . $node->getPath(),
+                $result,
+                200
+            );
+        }
+        return $responses;
+    }
+
+    /**
+     * Find Sabre nodes by file ids
+     *
+     * @param Node $rootNode root node for search
+     * @param array $fileIds file ids
+     * @return Node[] array of Sabre nodes
+     */
+    public function findNodesByFileIds($rootNode, $fileIds) {
+        $folder = $this->userFolder;
+        if (trim($rootNode->getPath(), '/') !== '') {
+            $folder = $folder->get($rootNode->getPath());
+        }
+
+        $results = [];
+        foreach ($fileIds as $fileId) {
+            $entry = $folder->getById($fileId);
+            if ($entry) {
+                $entry = current($entry);
+                if ($entry instanceof \OCP\Files\File) {
+                    $results[] = new File($this->fileView, $entry);
+                } else if ($entry instanceof \OCP\Files\Folder) {
+                    $results[] = new Directory($this->fileView, $entry);
+                }
+            }
+        }
+
+        return $results;
+    }
+
+    /**
+     * Returns whether the currently logged in user is an administrator
+     */
+    private function isAdmin() {
+        $user = $this->userSession->getUser();
+        if ($user !== null) {
+            return $this->groupManager->isAdmin($user->getUID());
+        }
+        return false;
+    }
 }

apps/dav/lib/Connector/Sabre/TagsPlugin.php

Indentation +217 added lines, -217 removed lines

@@ -54,246 +54,246 @@
 class TagsPlugin extends \Sabre\DAV\ServerPlugin
 {
 
-	// namespace
-	const NS_OWNCLOUD = 'http://owncloud.org/ns';
-	const TAGS_PROPERTYNAME = '{http://owncloud.org/ns}tags';
-	const FAVORITE_PROPERTYNAME = '{http://owncloud.org/ns}favorite';
-	const TAG_FAVORITE = '_$!<Favorite>!$_';
+    // namespace
+    const NS_OWNCLOUD = 'http://owncloud.org/ns';
+    const TAGS_PROPERTYNAME = '{http://owncloud.org/ns}tags';
+    const FAVORITE_PROPERTYNAME = '{http://owncloud.org/ns}favorite';
+    const TAG_FAVORITE = '_$!<Favorite>!$_';
 
-	/**
-	 * Reference to main server object
-	 *
-	 * @var \Sabre\DAV\Server
-	 */
-	private $server;
+    /**
+     * Reference to main server object
+     *
+     * @var \Sabre\DAV\Server
+     */
+    private $server;
 
-	/**
-	 * @var \OCP\ITagManager
-	 */
-	private $tagManager;
+    /**
+     * @var \OCP\ITagManager
+     */
+    private $tagManager;
 
-	/**
-	 * @var \OCP\ITags
-	 */
-	private $tagger;
+    /**
+     * @var \OCP\ITags
+     */
+    private $tagger;
 
-	/**
-	 * Array of file id to tags array
-	 * The null value means the cache wasn't initialized.
-	 *
-	 * @var array
-	 */
-	private $cachedTags;
+    /**
+     * Array of file id to tags array
+     * The null value means the cache wasn't initialized.
+     *
+     * @var array
+     */
+    private $cachedTags;
 
-	/**
-	 * @var \Sabre\DAV\Tree
-	 */
-	private $tree;
+    /**
+     * @var \Sabre\DAV\Tree
+     */
+    private $tree;
 
-	/**
-	 * @param \Sabre\DAV\Tree $tree tree
-	 * @param \OCP\ITagManager $tagManager tag manager
-	 */
-	public function __construct(\Sabre\DAV\Tree $tree, \OCP\ITagManager $tagManager) {
-		$this->tree = $tree;
-		$this->tagManager = $tagManager;
-		$this->tagger = null;
-		$this->cachedTags = [];
-	}
+    /**
+     * @param \Sabre\DAV\Tree $tree tree
+     * @param \OCP\ITagManager $tagManager tag manager
+     */
+    public function __construct(\Sabre\DAV\Tree $tree, \OCP\ITagManager $tagManager) {
+        $this->tree = $tree;
+        $this->tagManager = $tagManager;
+        $this->tagger = null;
+        $this->cachedTags = [];
+    }
 
-	/**
-	 * This initializes the plugin.
-	 *
-	 * This function is called by \Sabre\DAV\Server, after
-	 * addPlugin is called.
-	 *
-	 * This method should set up the required event subscriptions.
-	 *
-	 * @param \Sabre\DAV\Server $server
-	 * @return void
-	 */
-	public function initialize(\Sabre\DAV\Server $server) {
+    /**
+     * This initializes the plugin.
+     *
+     * This function is called by \Sabre\DAV\Server, after
+     * addPlugin is called.
+     *
+     * This method should set up the required event subscriptions.
+     *
+     * @param \Sabre\DAV\Server $server
+     * @return void
+     */
+    public function initialize(\Sabre\DAV\Server $server) {
 
-		$server->xml->namespaceMap[self::NS_OWNCLOUD] = 'oc';
-		$server->xml->elementMap[self::TAGS_PROPERTYNAME] = TagList::class;
+        $server->xml->namespaceMap[self::NS_OWNCLOUD] = 'oc';
+        $server->xml->elementMap[self::TAGS_PROPERTYNAME] = TagList::class;
 
-		$this->server = $server;
-		$this->server->on('propFind', [$this, 'handleGetProperties']);
-		$this->server->on('propPatch', [$this, 'handleUpdateProperties']);
-	}
+        $this->server = $server;
+        $this->server->on('propFind', [$this, 'handleGetProperties']);
+        $this->server->on('propPatch', [$this, 'handleUpdateProperties']);
+    }
 
-	/**
-	 * Returns the tagger
-	 *
-	 * @return \OCP\ITags tagger
-	 */
-	private function getTagger() {
-		if (!$this->tagger) {
-			$this->tagger = $this->tagManager->load('files');
-		}
-		return $this->tagger;
-	}
+    /**
+     * Returns the tagger
+     *
+     * @return \OCP\ITags tagger
+     */
+    private function getTagger() {
+        if (!$this->tagger) {
+            $this->tagger = $this->tagManager->load('files');
+        }
+        return $this->tagger;
+    }
 
-	/**
-	 * Returns tags and favorites.
-	 *
-	 * @param integer $fileId file id
-	 * @return array list($tags, $favorite) with $tags as tag array
-	 * and $favorite is a boolean whether the file was favorited
-	 */
-	private function getTagsAndFav($fileId) {
-		$isFav = false;
-		$tags = $this->getTags($fileId);
-		if ($tags) {
-			$favPos = array_search(self::TAG_FAVORITE, $tags);
-			if ($favPos !== false) {
-				$isFav = true;
-				unset($tags[$favPos]);
-			}
-		}
-		return [$tags, $isFav];
-	}
+    /**
+     * Returns tags and favorites.
+     *
+     * @param integer $fileId file id
+     * @return array list($tags, $favorite) with $tags as tag array
+     * and $favorite is a boolean whether the file was favorited
+     */
+    private function getTagsAndFav($fileId) {
+        $isFav = false;
+        $tags = $this->getTags($fileId);
+        if ($tags) {
+            $favPos = array_search(self::TAG_FAVORITE, $tags);
+            if ($favPos !== false) {
+                $isFav = true;
+                unset($tags[$favPos]);
+            }
+        }
+        return [$tags, $isFav];
+    }
 
-	/**
-	 * Returns tags for the given file id
-	 *
-	 * @param integer $fileId file id
-	 * @return array list of tags for that file
-	 */
-	private function getTags($fileId) {
-		if (isset($this->cachedTags[$fileId])) {
-			return $this->cachedTags[$fileId];
-		} else {
-			$tags = $this->getTagger()->getTagsForObjects([$fileId]);
-			if ($tags !== false) {
-				if (empty($tags)) {
-					return [];
-				}
-				return current($tags);
-			}
-		}
-		return null;
-	}
+    /**
+     * Returns tags for the given file id
+     *
+     * @param integer $fileId file id
+     * @return array list of tags for that file
+     */
+    private function getTags($fileId) {
+        if (isset($this->cachedTags[$fileId])) {
+            return $this->cachedTags[$fileId];
+        } else {
+            $tags = $this->getTagger()->getTagsForObjects([$fileId]);
+            if ($tags !== false) {
+                if (empty($tags)) {
+                    return [];
+                }
+                return current($tags);
+            }
+        }
+        return null;
+    }
 
-	/**
-	 * Updates the tags of the given file id
-	 *
-	 * @param int $fileId
-	 * @param array $tags array of tag strings
-	 */
-	private function updateTags($fileId, $tags) {
-		$tagger = $this->getTagger();
-		$currentTags = $this->getTags($fileId);
+    /**
+     * Updates the tags of the given file id
+     *
+     * @param int $fileId
+     * @param array $tags array of tag strings
+     */
+    private function updateTags($fileId, $tags) {
+        $tagger = $this->getTagger();
+        $currentTags = $this->getTags($fileId);
 
-		$newTags = array_diff($tags, $currentTags);
-		foreach ($newTags as $tag) {
-			if ($tag === self::TAG_FAVORITE) {
-				continue;
-			}
-			$tagger->tagAs($fileId, $tag);
-		}
-		$deletedTags = array_diff($currentTags, $tags);
-		foreach ($deletedTags as $tag) {
-			if ($tag === self::TAG_FAVORITE) {
-				continue;
-			}
-			$tagger->unTag($fileId, $tag);
-		}
-	}
+        $newTags = array_diff($tags, $currentTags);
+        foreach ($newTags as $tag) {
+            if ($tag === self::TAG_FAVORITE) {
+                continue;
+            }
+            $tagger->tagAs($fileId, $tag);
+        }
+        $deletedTags = array_diff($currentTags, $tags);
+        foreach ($deletedTags as $tag) {
+            if ($tag === self::TAG_FAVORITE) {
+                continue;
+            }
+            $tagger->unTag($fileId, $tag);
+        }
+    }
 
-	/**
-	 * Adds tags and favorites properties to the response,
-	 * if requested.
-	 *
-	 * @param PropFind $propFind
-	 * @param \Sabre\DAV\INode $node
-	 * @return void
-	 */
-	public function handleGetProperties(
-		PropFind $propFind,
-		\Sabre\DAV\INode $node
-	) {
-		if (!($node instanceof \OCA\DAV\Connector\Sabre\Node)) {
-			return;
-		}
+    /**
+     * Adds tags and favorites properties to the response,
+     * if requested.
+     *
+     * @param PropFind $propFind
+     * @param \Sabre\DAV\INode $node
+     * @return void
+     */
+    public function handleGetProperties(
+        PropFind $propFind,
+        \Sabre\DAV\INode $node
+    ) {
+        if (!($node instanceof \OCA\DAV\Connector\Sabre\Node)) {
+            return;
+        }
 
-		// need prefetch ?
-		if ($node instanceof \OCA\DAV\Connector\Sabre\Directory
-			&& $propFind->getDepth() !== 0
-			&& (!is_null($propFind->getStatus(self::TAGS_PROPERTYNAME))
-			|| !is_null($propFind->getStatus(self::FAVORITE_PROPERTYNAME))
-		)) {
-			// note: pre-fetching only supported for depth <= 1
-			$folderContent = $node->getChildren();
-			$fileIds[] = (int)$node->getId();
-			foreach ($folderContent as $info) {
-				$fileIds[] = (int)$info->getId();
-			}
-			$tags = $this->getTagger()->getTagsForObjects($fileIds);
-			if ($tags === false) {
-				// the tags API returns false on error...
-				$tags = [];
-			}
+        // need prefetch ?
+        if ($node instanceof \OCA\DAV\Connector\Sabre\Directory
+            && $propFind->getDepth() !== 0
+            && (!is_null($propFind->getStatus(self::TAGS_PROPERTYNAME))
+            || !is_null($propFind->getStatus(self::FAVORITE_PROPERTYNAME))
+        )) {
+            // note: pre-fetching only supported for depth <= 1
+            $folderContent = $node->getChildren();
+            $fileIds[] = (int)$node->getId();
+            foreach ($folderContent as $info) {
+                $fileIds[] = (int)$info->getId();
+            }
+            $tags = $this->getTagger()->getTagsForObjects($fileIds);
+            if ($tags === false) {
+                // the tags API returns false on error...
+                $tags = [];
+            }
 
-			$this->cachedTags = $this->cachedTags + $tags;
-			$emptyFileIds = array_diff($fileIds, array_keys($tags));
-			// also cache the ones that were not found
-			foreach ($emptyFileIds as $fileId) {
-				$this->cachedTags[$fileId] = [];
-			}
-		}
+            $this->cachedTags = $this->cachedTags + $tags;
+            $emptyFileIds = array_diff($fileIds, array_keys($tags));
+            // also cache the ones that were not found
+            foreach ($emptyFileIds as $fileId) {
+                $this->cachedTags[$fileId] = [];
+            }
+        }
 
-		$isFav = null;
+        $isFav = null;
 
-		$propFind->handle(self::TAGS_PROPERTYNAME, function() use (&$isFav, $node) {
-			list($tags, $isFav) = $this->getTagsAndFav($node->getId());
-			return new TagList($tags);
-		});
+        $propFind->handle(self::TAGS_PROPERTYNAME, function() use (&$isFav, $node) {
+            list($tags, $isFav) = $this->getTagsAndFav($node->getId());
+            return new TagList($tags);
+        });
 
-		$propFind->handle(self::FAVORITE_PROPERTYNAME, function() use ($isFav, $node) {
-			if (is_null($isFav)) {
-				list(, $isFav) = $this->getTagsAndFav($node->getId());
-			}
-			if ($isFav) {
-				return 1;
-			} else {
-				return 0;
-			}
-		});
-	}
+        $propFind->handle(self::FAVORITE_PROPERTYNAME, function() use ($isFav, $node) {
+            if (is_null($isFav)) {
+                list(, $isFav) = $this->getTagsAndFav($node->getId());
+            }
+            if ($isFav) {
+                return 1;
+            } else {
+                return 0;
+            }
+        });
+    }
 
-	/**
-	 * Updates tags and favorites properties, if applicable.
-	 *
-	 * @param string $path
-	 * @param PropPatch $propPatch
-	 *
-	 * @return void
-	 */
-	public function handleUpdateProperties($path, PropPatch $propPatch) {
-		$node = $this->tree->getNodeForPath($path);
-		if (!($node instanceof \OCA\DAV\Connector\Sabre\Node)) {
-			return;
-		}
+    /**
+     * Updates tags and favorites properties, if applicable.
+     *
+     * @param string $path
+     * @param PropPatch $propPatch
+     *
+     * @return void
+     */
+    public function handleUpdateProperties($path, PropPatch $propPatch) {
+        $node = $this->tree->getNodeForPath($path);
+        if (!($node instanceof \OCA\DAV\Connector\Sabre\Node)) {
+            return;
+        }
 
-		$propPatch->handle(self::TAGS_PROPERTYNAME, function($tagList) use ($node) {
-			$this->updateTags($node->getId(), $tagList->getTags());
-			return true;
-		});
+        $propPatch->handle(self::TAGS_PROPERTYNAME, function($tagList) use ($node) {
+            $this->updateTags($node->getId(), $tagList->getTags());
+            return true;
+        });
 
-		$propPatch->handle(self::FAVORITE_PROPERTYNAME, function($favState) use ($node) {
-			if ((int)$favState === 1 || $favState === 'true') {
-				$this->getTagger()->tagAs($node->getId(), self::TAG_FAVORITE);
-			} else {
-				$this->getTagger()->unTag($node->getId(), self::TAG_FAVORITE);
-			}
+        $propPatch->handle(self::FAVORITE_PROPERTYNAME, function($favState) use ($node) {
+            if ((int)$favState === 1 || $favState === 'true') {
+                $this->getTagger()->tagAs($node->getId(), self::TAG_FAVORITE);
+            } else {
+                $this->getTagger()->unTag($node->getId(), self::TAG_FAVORITE);
+            }
 
-			if (is_null($favState)) {
-				// confirm deletion
-				return 204;
-			}
+            if (is_null($favState)) {
+                // confirm deletion
+                return 204;
+            }
 
-			return 200;
-		});
-	}
+            return 200;
+        });
+    }
 }