nextcloud / server

apps/files_sharing/lib/Cache.php

Doc Comments +3 added lines

@@ -110,6 +110,9 @@
 		return parent::moveFromCache($sourceCache, $sourcePath, $targetPath);
 	}
 
+	/**
+	 * @param ICacheEntry $entry
+	 */
 	protected function formatCacheEntry($entry) {
 		$path = isset($entry['path']) ? $entry['path'] : '';
 		$entry = parent::formatCacheEntry($entry);

Unused Use Statements -1 removed lines

@@ -29,7 +29,6 @@
 
 use OC\Files\Cache\Wrapper\CacheJail;
 use OCP\Files\Cache\ICacheEntry;
-use OCP\Files\Storage\IStorage;
 
 /**
  * Metadata cache for shared files

Indentation +99 added lines, -99 removed lines

@@ -37,103 +37,103 @@
  * don't use this class directly if you need to get metadata, use \OC\Files\Filesystem::getFileInfo instead
  */
 class Cache extends CacheJail {
-	/**
-	 * @var \OCA\Files_Sharing\SharedStorage
-	 */
-	private $storage;
-
-	/**
-	 * @var ICacheEntry
-	 */
-	private $sourceRootInfo;
-
-	private $rootUnchanged = true;
-
-	private $ownerDisplayName;
-
-	/**
-	 * @param \OCA\Files_Sharing\SharedStorage $storage
-	 * @param ICacheEntry $sourceRootInfo
-	 */
-	public function __construct($storage, ICacheEntry $sourceRootInfo) {
-		$this->storage = $storage;
-		$this->sourceRootInfo = $sourceRootInfo;
-		parent::__construct(
-			null,
-			$this->sourceRootInfo->getPath()
-		);
-	}
-
-	public function getCache() {
-		if (is_null($this->cache)) {
-			$this->cache = $this->storage->getSourceStorage()->getCache();
-		}
-		return $this->cache;
-	}
-
-	public function getNumericStorageId() {
-		if (isset($this->numericId)) {
-			return $this->numericId;
-		} else {
-			return false;
-		}
-	}
-
-	public function get($file) {
-		if ($this->rootUnchanged && ($file === '' || $file === $this->sourceRootInfo->getId())) {
-			return $this->formatCacheEntry(clone $this->sourceRootInfo);
-		}
-		return parent::get($file);
-	}
-
-	public function update($id, array $data) {
-		$this->rootUnchanged = false;
-		parent::update($id, $data);
-	}
-
-	public function insert($file, array $data) {
-		$this->rootUnchanged = false;
-		return parent::insert($file, $data);
-	}
-
-	public function remove($file) {
-		$this->rootUnchanged = false;
-		parent::remove($file);
-	}
-
-	public function moveFromCache(\OCP\Files\Cache\ICache $sourceCache, $sourcePath, $targetPath) {
-		$this->rootUnchanged = false;
-		return parent::moveFromCache($sourceCache, $sourcePath, $targetPath);
-	}
-
-	protected function formatCacheEntry($entry) {
-		$path = isset($entry['path']) ? $entry['path'] : '';
-		$entry = parent::formatCacheEntry($entry);
-		$sharePermissions = $this->storage->getPermissions($path);
-		if (isset($entry['permissions'])) {
-			$entry['permissions'] &= $sharePermissions;
-		} else {
-			$entry['permissions'] = $sharePermissions;
-		}
-		$entry['uid_owner'] = $this->storage->getOwner($path);
-		$entry['displayname_owner'] = $this->getOwnerDisplayName();
-		if ($path === '') {
-			$entry['is_share_mount_point'] = true;
-		}
-		return $entry;
-	}
-
-	private function getOwnerDisplayName() {
-		if (!$this->ownerDisplayName) {
-			$this->ownerDisplayName = \OC_User::getDisplayName($this->storage->getOwner(''));
-		}
-		return $this->ownerDisplayName;
-	}
-
-	/**
-	 * remove all entries for files that are stored on the storage from the cache
-	 */
-	public function clear() {
-		// Not a valid action for Shared Cache
-	}
+    /**
+     * @var \OCA\Files_Sharing\SharedStorage
+     */
+    private $storage;
+
+    /**
+     * @var ICacheEntry
+     */
+    private $sourceRootInfo;
+
+    private $rootUnchanged = true;
+
+    private $ownerDisplayName;
+
+    /**
+     * @param \OCA\Files_Sharing\SharedStorage $storage
+     * @param ICacheEntry $sourceRootInfo
+     */
+    public function __construct($storage, ICacheEntry $sourceRootInfo) {
+        $this->storage = $storage;
+        $this->sourceRootInfo = $sourceRootInfo;
+        parent::__construct(
+            null,
+            $this->sourceRootInfo->getPath()
+        );
+    }
+
+    public function getCache() {
+        if (is_null($this->cache)) {
+            $this->cache = $this->storage->getSourceStorage()->getCache();
+        }
+        return $this->cache;
+    }
+
+    public function getNumericStorageId() {
+        if (isset($this->numericId)) {
+            return $this->numericId;
+        } else {
+            return false;
+        }
+    }
+
+    public function get($file) {
+        if ($this->rootUnchanged && ($file === '' || $file === $this->sourceRootInfo->getId())) {
+            return $this->formatCacheEntry(clone $this->sourceRootInfo);
+        }
+        return parent::get($file);
+    }
+
+    public function update($id, array $data) {
+        $this->rootUnchanged = false;
+        parent::update($id, $data);
+    }
+
+    public function insert($file, array $data) {
+        $this->rootUnchanged = false;
+        return parent::insert($file, $data);
+    }
+
+    public function remove($file) {
+        $this->rootUnchanged = false;
+        parent::remove($file);
+    }
+
+    public function moveFromCache(\OCP\Files\Cache\ICache $sourceCache, $sourcePath, $targetPath) {
+        $this->rootUnchanged = false;
+        return parent::moveFromCache($sourceCache, $sourcePath, $targetPath);
+    }
+
+    protected function formatCacheEntry($entry) {
+        $path = isset($entry['path']) ? $entry['path'] : '';
+        $entry = parent::formatCacheEntry($entry);
+        $sharePermissions = $this->storage->getPermissions($path);
+        if (isset($entry['permissions'])) {
+            $entry['permissions'] &= $sharePermissions;
+        } else {
+            $entry['permissions'] = $sharePermissions;
+        }
+        $entry['uid_owner'] = $this->storage->getOwner($path);
+        $entry['displayname_owner'] = $this->getOwnerDisplayName();
+        if ($path === '') {
+            $entry['is_share_mount_point'] = true;
+        }
+        return $entry;
+    }
+
+    private function getOwnerDisplayName() {
+        if (!$this->ownerDisplayName) {
+            $this->ownerDisplayName = \OC_User::getDisplayName($this->storage->getOwner(''));
+        }
+        return $this->ownerDisplayName;
+    }
+
+    /**
+     * remove all entries for files that are stored on the storage from the cache
+     */
+    public function clear() {
+        // Not a valid action for Shared Cache
+    }
 }

apps/dav/lib/CalDAV/CalDavBackend.php

Doc Comments +9 added lines, -3 removed lines

@@ -158,7 +158,7 @@ 
 	 *
 	 * By default this excludes the automatically generated birthday calendar
 	 *
-	 * @param $principalUri
+	 * @param string $principalUri
 	 * @param bool $excludeBirthday
 	 * @return int
 	 */
@@ -304,6 +304,9 @@ 
 		return array_values($calendars);
 	}
 
+	/**
+	 * @param string $principalUri
+	 */
 	public function getUsersOwnCalendars($principalUri) {
 		$principalUri = $this->convertPrincipal($principalUri, true);
 		$fields = array_values($this->propertyMap);
@@ -878,7 +881,7 @@ 
 	 * 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 integer $calendarId
 	 * @param string $objectUri
 	 * @param string $calendarData
 	 * @return string
@@ -1370,7 +1373,7 @@ 
 	 * @param string $principalUri
 	 * @param string $uri
 	 * @param array $properties
-	 * @return mixed
+	 * @return integer
 	 */
 	function createSubscription($principalUri, $uri, array $properties) {
 
@@ -1783,6 +1786,9 @@ 
 		return $this->sharingBackend->applyShareAcl($resourceId, $acl);
 	}
 
+	/**
+	 * @param boolean $toV2
+	 */
 	private function convertPrincipal($principalUri, $toV2) {
 		if ($this->principalBackend->getPrincipalPrefix() === 'principals') {
 			list(, $name) = URLUtil::splitPath($principalUri);

Braces +3 added lines, -1 removed lines

@@ -808,7 +808,9 @@
 		$stmt = $query->execute();
 		$row = $stmt->fetch(\PDO::FETCH_ASSOC);
 
-		if(!$row) return null;
+		if(!$row) {
+		    return null;
+		}
 
 		return [
 				'id'            => $row['id'],

Indentation +1751 added lines, -1751 removed lines

@@ -59,1756 +59,1756 @@
  */
 class CalDavBackend extends AbstractBackend implements SyncSupport, SubscriptionSupport, SchedulingSupport {
 
-	const PERSONAL_CALENDAR_URI = 'personal';
-	const PERSONAL_CALENDAR_NAME = 'Personal';
-
-	/**
-	 * 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 string[] Map of uid => display name
-	 */
-	protected $userDisplayNames;
-
-	/** @var IDBConnection */
-	private $db;
-
-	/** @var Backend */
-	private $sharingBackend;
-
-	/** @var Principal */
-	private $principalBackend;
-
-	/** @var IUserManager */
-	private $userManager;
-
-	/** @var ISecureRandom */
-	private $random;
-
-	/** @var EventDispatcherInterface */
-	private $dispatcher;
-
-	/** @var bool */
-	private $legacyEndpoint;
-
-	/**
-	 * CalDavBackend constructor.
-	 *
-	 * @param IDBConnection $db
-	 * @param Principal $principalBackend
-	 * @param IUserManager $userManager
-	 * @param ISecureRandom $random
-	 * @param EventDispatcherInterface $dispatcher
-	 * @param bool $legacyEndpoint
-	 */
-	public function __construct(IDBConnection $db,
-								Principal $principalBackend,
-								IUserManager $userManager,
-								ISecureRandom $random,
-								EventDispatcherInterface $dispatcher,
-								$legacyEndpoint = false) {
-		$this->db = $db;
-		$this->principalBackend = $principalBackend;
-		$this->userManager = $userManager;
-		$this->sharingBackend = new Backend($this->db, $principalBackend, 'calendar');
-		$this->random = $random;
-		$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->createFunction('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];
-			}
-
-			if (!isset($calendars[$calendar['id']])) {
-				$calendars[$calendar['id']] = $calendar;
-			}
-		}
-
-		$stmt->closeCursor();
-
-		// query for shared calendars
-		$principals = $this->principalBackend->getGroupMembership($principalUriOriginal, true);
-		$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()) {
-			$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(, $name) = URLUtil::splitPath($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($components),
-				'{' . Plugin::NS_CALDAV . '}schedule-calendar-transp' => new ScheduleCalendarTransp($row['transparent']?'transparent':'opaque'),
-				'{' . \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];
-			}
-
-			$calendars[$calendar['id']] = $calendar;
-		}
-		$result->closeCursor();
-
-		return array_values($calendars);
-	}
-
-	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];
-			}
-			if (!isset($calendars[$calendar['id']])) {
-				$calendars[$calendar['id']] = $calendar;
-			}
-		}
-		$stmt->closeCursor();
-		return array_values($calendars);
-	}
-
-
-	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];
-	}
+    const PERSONAL_CALENDAR_URI = 'personal';
+    const PERSONAL_CALENDAR_NAME = 'Personal';
+
+    /**
+     * 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 string[] Map of uid => display name
+     */
+    protected $userDisplayNames;
+
+    /** @var IDBConnection */
+    private $db;
+
+    /** @var Backend */
+    private $sharingBackend;
+
+    /** @var Principal */
+    private $principalBackend;
+
+    /** @var IUserManager */
+    private $userManager;
+
+    /** @var ISecureRandom */
+    private $random;
+
+    /** @var EventDispatcherInterface */
+    private $dispatcher;
+
+    /** @var bool */
+    private $legacyEndpoint;
+
+    /**
+     * CalDavBackend constructor.
+     *
+     * @param IDBConnection $db
+     * @param Principal $principalBackend
+     * @param IUserManager $userManager
+     * @param ISecureRandom $random
+     * @param EventDispatcherInterface $dispatcher
+     * @param bool $legacyEndpoint
+     */
+    public function __construct(IDBConnection $db,
+                                Principal $principalBackend,
+                                IUserManager $userManager,
+                                ISecureRandom $random,
+                                EventDispatcherInterface $dispatcher,
+                                $legacyEndpoint = false) {
+        $this->db = $db;
+        $this->principalBackend = $principalBackend;
+        $this->userManager = $userManager;
+        $this->sharingBackend = new Backend($this->db, $principalBackend, 'calendar');
+        $this->random = $random;
+        $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->createFunction('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];
+            }
+
+            if (!isset($calendars[$calendar['id']])) {
+                $calendars[$calendar['id']] = $calendar;
+            }
+        }
+
+        $stmt->closeCursor();
+
+        // query for shared calendars
+        $principals = $this->principalBackend->getGroupMembership($principalUriOriginal, true);
+        $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()) {
+            $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(, $name) = URLUtil::splitPath($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($components),
+                '{' . Plugin::NS_CALDAV . '}schedule-calendar-transp' => new ScheduleCalendarTransp($row['transparent']?'transparent':'opaque'),
+                '{' . \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];
+            }
+
+            $calendars[$calendar['id']] = $calendar;
+        }
+        $result->closeCursor();
+
+        return array_values($calendars);
+    }
+
+    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];
+            }
+            if (!isset($calendars[$calendar['id']])) {
+                $calendars[$calendar['id']] = $calendar;
+            }
+        }
+        $stmt->closeCursor();
+        return array_values($calendars);
+    }
+
+
+    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(, $name) = URLUtil::splitPath($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];
-			}
-
-			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(, $name) = URLUtil::splitPath($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];
-		}
-
-		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];
-		}
-
-		return $calendar;
-	}
-
-	public function getCalendarById($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];
-		}
-
-		return $calendar;
-	}
-
-	/**
-	 * 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 $properties
-	 * @return int
-	 */
-	function createCalendar($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());
-		}
-		$transp = '{' . Plugin::NS_CALDAV . '}schedule-calendar-transp';
-		if (isset($properties[$transp])) {
-			$values['transparent'] = $properties[$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 PropPatch $propPatch
-	 * @return void
-	 */
-	function updateCalendar($calendarId, PropPatch $propPatch) {
-		$supportedProperties = array_keys($this->propertyMap);
-		$supportedProperties[] = '{' . Plugin::NS_CALDAV . '}schedule-calendar-transp';
-
-		$propPatch->handle($supportedProperties, function($mutations) use ($calendarId) {
-			$newValues = [];
-			foreach ($mutations as $propertyName => $propertyValue) {
-
-				switch ($propertyName) {
-					case '{' . Plugin::NS_CALDAV . '}schedule-calendar-transp' :
-						$fieldName = 'transparent';
-						$newValues[$fieldName] = $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` = ?');
-		$stmt->execute([$calendarId]);
-
-		$stmt = $this->db->prepare('DELETE FROM `*PREFIX*calendars` WHERE `id` = ?');
-		$stmt->execute([$calendarId]);
-
-		$stmt = $this->db->prepare('DELETE FROM `*PREFIX*calendarchanges` WHERE `calendarid` = ?');
-		$stmt->execute([$calendarId]);
-
-		$this->sharingBackend->deleteAllShares($calendarId);
-	}
-
-	/**
-	 * Delete all of an user's shares
-	 *
-	 * @param string $principaluri
-	 * @return void
-	 */
-	function deleteAllSharesByUser($principaluri) {
-		$this->sharingBackend->deleteAllSharesByUser($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 $calendarId
-	 * @return array
-	 */
-	function getCalendarObjects($calendarId) {
-		$query = $this->db->getQueryBuilder();
-		$query->select(['id', 'uri', 'lastmodified', 'etag', 'calendarid', 'size', 'componenttype', 'classification'])
-			->from('calendarobjects')
-			->where($query->expr()->eq('calendarid', $query->createNamedParameter($calendarId)));
-		$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 $calendarId
-	 * @param string $objectUri
-	 * @return array|null
-	 */
-	function getCalendarObject($calendarId, $objectUri) {
-
-		$query = $this->db->getQueryBuilder();
-		$query->select(['id', 'uri', 'lastmodified', 'etag', 'calendarid', 'size', 'calendardata', 'componenttype', 'classification'])
-				->from('calendarobjects')
-				->where($query->expr()->eq('calendarid', $query->createNamedParameter($calendarId)))
-				->andWhere($query->expr()->eq('uri', $query->createNamedParameter($objectUri)));
-		$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[] $uris
-	 * @return array
-	 */
-	function getMultipleCalendarObjects($calendarId, array $uris) {
-		if (empty($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', $query->createNamedParameter($calendarId)))
-			->andWhere($query->expr()->in('uri', $query->createParameter('uri')));
-
-		foreach ($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 $calendarData
-	 * @return string
-	 */
-	function createCalendarObject($calendarId, $objectUri, $calendarData) {
-		$extraData = $this->getDenormalizedData($calendarData);
-
-		$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']),
-			])
-			->execute();
-
-		$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),
-			]
-		));
-		$this->addChange($calendarId, $objectUri, 1);
-
-		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 $calendarData
-	 * @return string
-	 */
-	function updateCalendarObject($calendarId, $objectUri, $calendarData) {
-		$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)))
-			->execute();
-
-		$data = $this->getCalendarObject($calendarId, $objectUri);
-		if (is_array($data)) {
-			$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,
-				]
-			));
-		}
-		$this->addChange($calendarId, $objectUri, 2);
-
-		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 $objectUri
-	 * @return void
-	 */
-	function deleteCalendarObject($calendarId, $objectUri) {
-		$data = $this->getCalendarObject($calendarId, $objectUri);
-		if (is_array($data)) {
-			$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,
-				]
-			));
-		}
-
-		$stmt = $this->db->prepare('DELETE FROM `*PREFIX*calendarobjects` WHERE `calendarid` = ? AND `uri` = ?');
-		$stmt->execute([$calendarId, $objectUri]);
-
-		$this->addChange($calendarId, $objectUri, 3);
-	}
-
-	/**
-	 * 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 $calendarId
-	 * @param array $filters
-	 * @return array
-	 */
-	function calendarQuery($calendarId, array $filters) {
-		$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', $query->createNamedParameter($calendarId)));
-
-		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) {
-				if (!$this->validateFilterForObject($row, $filters)) {
-					continue;
-				}
-			}
-			$result[] = $row['uri'];
-		}
-
-		return $result;
-	}
-
-	/**
-	 * 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)));
-
-		$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 $limit
-	 * @return array
-	 */
-	function getChangesForCalendar($calendarId, $syncToken, $syncLevel, $limit = null) {
-		// 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) {
-
-			$query = "SELECT `uri`, `operation` FROM `*PREFIX*calendarchanges` WHERE `synctoken` >= ? AND `synctoken` < ? AND `calendarid` = ? ORDER BY `synctoken`";
-			if ($limit>0) {
-				$query.= " `LIMIT` " . (int)$limit;
-			}
-
-			// Fetching all changes
-			$stmt = $this->db->prepare($query);
-			$stmt->execute([$syncToken, $currentToken, $calendarId]);
-
-			$changes = [];
-
-			// This loop ensures that any duplicates are overwritten, only the
-			// last change on a node is relevant.
-			while($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` = ?";
-			$stmt = $this->db->prepare($query);
-			$stmt->execute([$calendarId]);
-
-			$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';
-
-		$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' => $row['lastmodified'],
-
-				'{' . Plugin::NS_CALDAV . '}supported-calendar-component-set' => new SupportedCalendarComponentSet(['VTODO', 'VEVENT']),
-			];
-
-			foreach($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 = array();
-
-		$query = $this->db->getQueryBuilder();
-
-		foreach (array_keys($values) as $name) {
-			$valuesToInsert[$name] = $query->createNamedParameter($values[$name]);
-		}
-
-		$query->insert('calendarsubscriptions')
-			->values($valuesToInsert)
-			->execute();
-
-		return $this->db->lastInsertId('*PREFIX*calendarsubscriptions');
-	}
-
-	/**
-	 * 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';
-
-		$propPatch->handle($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();
-
-			return true;
-
-		});
-	}
-
-	/**
-	 * Deletes a subscription.
-	 *
-	 * @param mixed $subscriptionId
-	 * @return void
-	 */
-	function deleteSubscription($subscriptionId) {
-		$query = $this->db->getQueryBuilder();
-		$query->delete('calendarsubscriptions')
-			->where($query->expr()->eq('id', $query->createNamedParameter($subscriptionId)))
-			->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),
-				'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 $operation 1 = add, 2 = modify, 3 = delete.
-	 * @return void
-	 */
-	protected function addChange($calendarId, $objectUri, $operation) {
-
-		$stmt = $this->db->prepare('INSERT INTO `*PREFIX*calendarchanges` (`uri`, `synctoken`, `calendarid`, `operation`) SELECT ?, `synctoken`, ?, ? FROM `*PREFIX*calendars` WHERE `id` = ?');
-		$stmt->execute([
-			$objectUri,
-			$calendarId,
-			$operation,
-			$calendarId
-		]);
-		$stmt = $this->db->prepare('UPDATE `*PREFIX*calendars` 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' => $classification
-		];
-
-	}
-
-	private function readBlob($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,
-			]));
-		$this->sharingBackend->updateShares($shareable, $add, $remove);
-	}
-
-	/**
-	 * @param int $resourceId
-	 * @return array
-	 */
-	public function getShares($resourceId) {
-		return $this->sharingBackend->getShares($resourceId);
-	}
-
-	/**
-	 * @param boolean $value
-	 * @param \OCA\DAV\CalDAV\Calendar $calendar
-	 * @return string|null
-	 */
-	public function setPublishStatus($value, $calendar) {
-		$query = $this->db->getQueryBuilder();
-		if ($value) {
-			$publicUri = $this->random->generate(16, ISecureRandom::CHAR_UPPER.ISecureRandom::CHAR_DIGITS);
-			$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 $this->sharingBackend->applyShareAcl($resourceId, $acl);
-	}
-
-	private function convertPrincipal($principalUri, $toV2) {
-		if ($this->principalBackend->getPrincipalPrefix() === 'principals') {
-			list(, $name) = URLUtil::splitPath($principalUri);
-			if ($toV2 === true) {
-				return "principals/users/$name";
-			}
-			return "principals/$name";
-		}
-		return $principalUri;
-	}
+    /**
+     * @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(, $name) = URLUtil::splitPath($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];
+            }
+
+            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(, $name) = URLUtil::splitPath($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];
+        }
+
+        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];
+        }
+
+        return $calendar;
+    }
+
+    public function getCalendarById($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];
+        }
+
+        return $calendar;
+    }
+
+    /**
+     * 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 $properties
+     * @return int
+     */
+    function createCalendar($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());
+        }
+        $transp = '{' . Plugin::NS_CALDAV . '}schedule-calendar-transp';
+        if (isset($properties[$transp])) {
+            $values['transparent'] = $properties[$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 PropPatch $propPatch
+     * @return void
+     */
+    function updateCalendar($calendarId, PropPatch $propPatch) {
+        $supportedProperties = array_keys($this->propertyMap);
+        $supportedProperties[] = '{' . Plugin::NS_CALDAV . '}schedule-calendar-transp';
+
+        $propPatch->handle($supportedProperties, function($mutations) use ($calendarId) {
+            $newValues = [];
+            foreach ($mutations as $propertyName => $propertyValue) {
+
+                switch ($propertyName) {
+                    case '{' . Plugin::NS_CALDAV . '}schedule-calendar-transp' :
+                        $fieldName = 'transparent';
+                        $newValues[$fieldName] = $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` = ?');
+        $stmt->execute([$calendarId]);
+
+        $stmt = $this->db->prepare('DELETE FROM `*PREFIX*calendars` WHERE `id` = ?');
+        $stmt->execute([$calendarId]);
+
+        $stmt = $this->db->prepare('DELETE FROM `*PREFIX*calendarchanges` WHERE `calendarid` = ?');
+        $stmt->execute([$calendarId]);
+
+        $this->sharingBackend->deleteAllShares($calendarId);
+    }
+
+    /**
+     * Delete all of an user's shares
+     *
+     * @param string $principaluri
+     * @return void
+     */
+    function deleteAllSharesByUser($principaluri) {
+        $this->sharingBackend->deleteAllSharesByUser($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 $calendarId
+     * @return array
+     */
+    function getCalendarObjects($calendarId) {
+        $query = $this->db->getQueryBuilder();
+        $query->select(['id', 'uri', 'lastmodified', 'etag', 'calendarid', 'size', 'componenttype', 'classification'])
+            ->from('calendarobjects')
+            ->where($query->expr()->eq('calendarid', $query->createNamedParameter($calendarId)));
+        $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 $calendarId
+     * @param string $objectUri
+     * @return array|null
+     */
+    function getCalendarObject($calendarId, $objectUri) {
+
+        $query = $this->db->getQueryBuilder();
+        $query->select(['id', 'uri', 'lastmodified', 'etag', 'calendarid', 'size', 'calendardata', 'componenttype', 'classification'])
+                ->from('calendarobjects')
+                ->where($query->expr()->eq('calendarid', $query->createNamedParameter($calendarId)))
+                ->andWhere($query->expr()->eq('uri', $query->createNamedParameter($objectUri)));
+        $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[] $uris
+     * @return array
+     */
+    function getMultipleCalendarObjects($calendarId, array $uris) {
+        if (empty($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', $query->createNamedParameter($calendarId)))
+            ->andWhere($query->expr()->in('uri', $query->createParameter('uri')));
+
+        foreach ($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 $calendarData
+     * @return string
+     */
+    function createCalendarObject($calendarId, $objectUri, $calendarData) {
+        $extraData = $this->getDenormalizedData($calendarData);
+
+        $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']),
+            ])
+            ->execute();
+
+        $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),
+            ]
+        ));
+        $this->addChange($calendarId, $objectUri, 1);
+
+        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 $calendarData
+     * @return string
+     */
+    function updateCalendarObject($calendarId, $objectUri, $calendarData) {
+        $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)))
+            ->execute();
+
+        $data = $this->getCalendarObject($calendarId, $objectUri);
+        if (is_array($data)) {
+            $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,
+                ]
+            ));
+        }
+        $this->addChange($calendarId, $objectUri, 2);
+
+        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 $objectUri
+     * @return void
+     */
+    function deleteCalendarObject($calendarId, $objectUri) {
+        $data = $this->getCalendarObject($calendarId, $objectUri);
+        if (is_array($data)) {
+            $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,
+                ]
+            ));
+        }
+
+        $stmt = $this->db->prepare('DELETE FROM `*PREFIX*calendarobjects` WHERE `calendarid` = ? AND `uri` = ?');
+        $stmt->execute([$calendarId, $objectUri]);
+
+        $this->addChange($calendarId, $objectUri, 3);
+    }
+
+    /**
+     * 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 $calendarId
+     * @param array $filters
+     * @return array
+     */
+    function calendarQuery($calendarId, array $filters) {
+        $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', $query->createNamedParameter($calendarId)));
+
+        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) {
+                if (!$this->validateFilterForObject($row, $filters)) {
+                    continue;
+                }
+            }
+            $result[] = $row['uri'];
+        }
+
+        return $result;
+    }
+
+    /**
+     * 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)));
+
+        $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 $limit
+     * @return array
+     */
+    function getChangesForCalendar($calendarId, $syncToken, $syncLevel, $limit = null) {
+        // 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) {
+
+            $query = "SELECT `uri`, `operation` FROM `*PREFIX*calendarchanges` WHERE `synctoken` >= ? AND `synctoken` < ? AND `calendarid` = ? ORDER BY `synctoken`";
+            if ($limit>0) {
+                $query.= " `LIMIT` " . (int)$limit;
+            }
+
+            // Fetching all changes
+            $stmt = $this->db->prepare($query);
+            $stmt->execute([$syncToken, $currentToken, $calendarId]);
+
+            $changes = [];
+
+            // This loop ensures that any duplicates are overwritten, only the
+            // last change on a node is relevant.
+            while($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` = ?";
+            $stmt = $this->db->prepare($query);
+            $stmt->execute([$calendarId]);
+
+            $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';
+
+        $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' => $row['lastmodified'],
+
+                '{' . Plugin::NS_CALDAV . '}supported-calendar-component-set' => new SupportedCalendarComponentSet(['VTODO', 'VEVENT']),
+            ];
+
+            foreach($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 = array();
+
+        $query = $this->db->getQueryBuilder();
+
+        foreach (array_keys($values) as $name) {
+            $valuesToInsert[$name] = $query->createNamedParameter($values[$name]);
+        }
+
+        $query->insert('calendarsubscriptions')
+            ->values($valuesToInsert)
+            ->execute();
+
+        return $this->db->lastInsertId('*PREFIX*calendarsubscriptions');
+    }
+
+    /**
+     * 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';
+
+        $propPatch->handle($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();
+
+            return true;
+
+        });
+    }
+
+    /**
+     * Deletes a subscription.
+     *
+     * @param mixed $subscriptionId
+     * @return void
+     */
+    function deleteSubscription($subscriptionId) {
+        $query = $this->db->getQueryBuilder();
+        $query->delete('calendarsubscriptions')
+            ->where($query->expr()->eq('id', $query->createNamedParameter($subscriptionId)))
+            ->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),
+                '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 $operation 1 = add, 2 = modify, 3 = delete.
+     * @return void
+     */
+    protected function addChange($calendarId, $objectUri, $operation) {
+
+        $stmt = $this->db->prepare('INSERT INTO `*PREFIX*calendarchanges` (`uri`, `synctoken`, `calendarid`, `operation`) SELECT ?, `synctoken`, ?, ? FROM `*PREFIX*calendars` WHERE `id` = ?');
+        $stmt->execute([
+            $objectUri,
+            $calendarId,
+            $operation,
+            $calendarId
+        ]);
+        $stmt = $this->db->prepare('UPDATE `*PREFIX*calendars` 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' => $classification
+        ];
+
+    }
+
+    private function readBlob($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,
+            ]));
+        $this->sharingBackend->updateShares($shareable, $add, $remove);
+    }
+
+    /**
+     * @param int $resourceId
+     * @return array
+     */
+    public function getShares($resourceId) {
+        return $this->sharingBackend->getShares($resourceId);
+    }
+
+    /**
+     * @param boolean $value
+     * @param \OCA\DAV\CalDAV\Calendar $calendar
+     * @return string|null
+     */
+    public function setPublishStatus($value, $calendar) {
+        $query = $this->db->getQueryBuilder();
+        if ($value) {
+            $publicUri = $this->random->generate(16, ISecureRandom::CHAR_UPPER.ISecureRandom::CHAR_DIGITS);
+            $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 $this->sharingBackend->applyShareAcl($resourceId, $acl);
+    }
+
+    private function convertPrincipal($principalUri, $toV2) {
+        if ($this->principalBackend->getPrincipalPrefix() === 'principals') {
+            list(, $name) = URLUtil::splitPath($principalUri);
+            if ($toV2 === true) {
+                return "principals/users/$name";
+            }
+            return "principals/$name";
+        }
+        return $principalUri;
+    }
 }

Spacing +109 added lines, -109 removed lines

@@ -179,7 +179,7 @@ 
 			$query->andWhere($query->expr()->neq('uri', $query->createNamedParameter(BirthdayService::BIRTHDAY_CALENDAR_URI)));
 		}
 
-		return (int)$query->execute()->fetchColumn();
+		return (int) $query->execute()->fetchColumn();
 	}
 
 	/**
@@ -226,25 +226,25 @@ 
 		$stmt = $query->execute();
 
 		$calendars = [];
-		while($row = $stmt->fetch(\PDO::FETCH_ASSOC)) {
+		while ($row = $stmt->fetch(\PDO::FETCH_ASSOC)) {
 
 			$components = [];
 			if ($row['components']) {
-				$components = explode(',',$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, !$this->legacyEndpoint),
+				'{'.Plugin::NS_CALENDARSERVER.'}getctag' => 'http://sabre.io/ns/sync/'.($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) {
+			foreach ($this->propertyMap as $xmlName=>$dbName) {
 				$calendar[$xmlName] = $row[$dbName];
 			}
 
@@ -257,7 +257,7 @@ 
 
 		// query for shared calendars
 		$principals = $this->principalBackend->getGroupMembership($principalUriOriginal, true);
-		$principals[]= $principalUri;
+		$principals[] = $principalUri;
 
 		$fields = array_values($this->propertyMap);
 		$fields[] = 'a.id';
@@ -277,8 +277,8 @@ 
 			->setParameter('principaluri', $principals, \Doctrine\DBAL\Connection::PARAM_STR_ARRAY)
 			->execute();
 
-		$readOnlyPropertyName = '{' . \OCA\DAV\DAV\Sharing\Plugin::NS_OWNCLOUD . '}read-only';
-		while($row = $result->fetch()) {
+		$readOnlyPropertyName = '{'.\OCA\DAV\DAV\Sharing\Plugin::NS_OWNCLOUD.'}read-only';
+		while ($row = $result->fetch()) {
 			$readOnly = (int) $row['access'] === Backend::ACCESS_READ;
 			if (isset($calendars[$row['id']])) {
 				if ($readOnly) {
@@ -293,25 +293,25 @@ 
 			}
 
 			list(, $name) = URLUtil::splitPath($row['principaluri']);
-			$uri = $row['uri'] . '_shared_by_' . $name;
-			$row['displayname'] = $row['displayname'] . ' (' . $this->getUserDisplayName($name) . ')';
+			$uri = $row['uri'].'_shared_by_'.$name;
+			$row['displayname'] = $row['displayname'].' ('.$this->getUserDisplayName($name).')';
 			$components = [];
 			if ($row['components']) {
-				$components = explode(',',$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($components),
-				'{' . Plugin::NS_CALDAV . '}schedule-calendar-transp' => new ScheduleCalendarTransp($row['transparent']?'transparent':'opaque'),
-				'{' . \OCA\DAV\DAV\Sharing\Plugin::NS_OWNCLOUD . '}owner-principal' => $this->convertPrincipal($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),
 				$readOnlyPropertyName => $readOnly,
 			];
 
-			foreach($this->propertyMap as $xmlName=>$dbName) {
+			foreach ($this->propertyMap as $xmlName=>$dbName) {
 				$calendar[$xmlName] = $row[$dbName];
 			}
 
@@ -338,21 +338,21 @@ 
 			->orderBy('calendarorder', 'ASC');
 		$stmt = $query->execute();
 		$calendars = [];
-		while($row = $stmt->fetch(\PDO::FETCH_ASSOC)) {
+		while ($row = $stmt->fetch(\PDO::FETCH_ASSOC)) {
 			$components = [];
 			if ($row['components']) {
-				$components = explode(',',$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'),
+				'{'.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) {
+			foreach ($this->propertyMap as $xmlName=>$dbName) {
 				$calendar[$xmlName] = $row[$dbName];
 			}
 			if (!isset($calendars[$calendar['id']])) {
@@ -400,27 +400,27 @@ 
 			->andWhere($query->expr()->eq('s.type', $query->createNamedParameter('calendar')))
 			->execute();
 
-		while($row = $result->fetch()) {
+		while ($row = $result->fetch()) {
 			list(, $name) = URLUtil::splitPath($row['principaluri']);
-			$row['displayname'] = $row['displayname'] . "($name)";
+			$row['displayname'] = $row['displayname']."($name)";
 			$components = [];
 			if ($row['components']) {
-				$components = explode(',',$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)$row['access'] === self::ACCESS_PUBLIC,
+				'{'.Plugin::NS_CALENDARSERVER.'}getctag' => 'http://sabre.io/ns/sync/'.($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) {
+			foreach ($this->propertyMap as $xmlName=>$dbName) {
 				$calendar[$xmlName] = $row[$dbName];
 			}
 
@@ -462,29 +462,29 @@ 
 		$result->closeCursor();
 
 		if ($row === false) {
-			throw new NotFound('Node with name \'' . $uri . '\' could not be found');
+			throw new NotFound('Node with name \''.$uri.'\' could not be found');
 		}
 
 		list(, $name) = URLUtil::splitPath($row['principaluri']);
-		$row['displayname'] = $row['displayname'] . ' ' . "($name)";
+		$row['displayname'] = $row['displayname'].' '."($name)";
 		$components = [];
 		if ($row['components']) {
-			$components = explode(',',$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)$row['access'] === self::ACCESS_PUBLIC,
+			'{'.Plugin::NS_CALENDARSERVER.'}getctag' => 'http://sabre.io/ns/sync/'.($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) {
+		foreach ($this->propertyMap as $xmlName=>$dbName) {
 			$calendar[$xmlName] = $row[$dbName];
 		}
 
@@ -522,20 +522,20 @@ 
 
 		$components = [];
 		if ($row['components']) {
-			$components = explode(',',$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'),
+			'{'.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) {
+		foreach ($this->propertyMap as $xmlName=>$dbName) {
 			$calendar[$xmlName] = $row[$dbName];
 		}
 
@@ -566,20 +566,20 @@ 
 
 		$components = [];
 		if ($row['components']) {
-			$components = explode(',',$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'),
+			'{'.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) {
+		foreach ($this->propertyMap as $xmlName=>$dbName) {
 			$calendar[$xmlName] = $row[$dbName];
 		}
 
@@ -611,16 +611,16 @@ 
 		$sccs = '{urn:ietf:params:xml:ns:caldav}supported-calendar-component-set';
 		if (isset($properties[$sccs])) {
 			if (!($properties[$sccs] instanceof SupportedCalendarComponentSet)) {
-				throw new DAV\Exception('The ' . $sccs . ' property must be of type: \Sabre\CalDAV\Property\SupportedCalendarComponentSet');
+				throw new DAV\Exception('The '.$sccs.' property must be of type: \Sabre\CalDAV\Property\SupportedCalendarComponentSet');
 			}
-			$values['components'] = implode(',',$properties[$sccs]->getValue());
+			$values['components'] = implode(',', $properties[$sccs]->getValue());
 		}
-		$transp = '{' . Plugin::NS_CALDAV . '}schedule-calendar-transp';
+		$transp = '{'.Plugin::NS_CALDAV.'}schedule-calendar-transp';
 		if (isset($properties[$transp])) {
-			$values['transparent'] = $properties[$transp]->getValue()==='transparent';
+			$values['transparent'] = $properties[$transp]->getValue() === 'transparent';
 		}
 
-		foreach($this->propertyMap as $xmlName=>$dbName) {
+		foreach ($this->propertyMap as $xmlName=>$dbName) {
 			if (isset($properties[$xmlName])) {
 				$values[$dbName] = $properties[$xmlName];
 			}
@@ -628,7 +628,7 @@ 
 
 		$query = $this->db->getQueryBuilder();
 		$query->insert('calendars');
-		foreach($values as $column => $value) {
+		foreach ($values as $column => $value) {
 			$query->setValue($column, $query->createNamedParameter($value));
 		}
 		$query->execute();
@@ -661,14 +661,14 @@ 
 	 */
 	function updateCalendar($calendarId, PropPatch $propPatch) {
 		$supportedProperties = array_keys($this->propertyMap);
-		$supportedProperties[] = '{' . Plugin::NS_CALDAV . '}schedule-calendar-transp';
+		$supportedProperties[] = '{'.Plugin::NS_CALDAV.'}schedule-calendar-transp';
 
 		$propPatch->handle($supportedProperties, function($mutations) use ($calendarId) {
 			$newValues = [];
 			foreach ($mutations as $propertyName => $propertyValue) {
 
 				switch ($propertyName) {
-					case '{' . Plugin::NS_CALDAV . '}schedule-calendar-transp' :
+					case '{'.Plugin::NS_CALDAV.'}schedule-calendar-transp' :
 						$fieldName = 'transparent';
 						$newValues[$fieldName] = $propertyValue->getValue() === 'transparent';
 						break;
@@ -778,16 +778,16 @@ 
 		$stmt = $query->execute();
 
 		$result = [];
-		foreach($stmt->fetchAll(\PDO::FETCH_ASSOC) as $row) {
+		foreach ($stmt->fetchAll(\PDO::FETCH_ASSOC) as $row) {
 			$result[] = [
 					'id'           => $row['id'],
 					'uri'          => $row['uri'],
 					'lastmodified' => $row['lastmodified'],
-					'etag'         => '"' . $row['etag'] . '"',
+					'etag'         => '"'.$row['etag'].'"',
 					'calendarid'   => $row['calendarid'],
-					'size'         => (int)$row['size'],
+					'size'         => (int) $row['size'],
 					'component'    => strtolower($row['componenttype']),
-					'classification'=> (int)$row['classification']
+					'classification'=> (int) $row['classification']
 			];
 		}
 
@@ -820,18 +820,18 @@ 
 		$stmt = $query->execute();
 		$row = $stmt->fetch(\PDO::FETCH_ASSOC);
 
-		if(!$row) return null;
+		if (!$row) return null;
 
 		return [
 				'id'            => $row['id'],
 				'uri'           => $row['uri'],
 				'lastmodified'  => $row['lastmodified'],
-				'etag'          => '"' . $row['etag'] . '"',
+				'etag'          => '"'.$row['etag'].'"',
 				'calendarid'    => $row['calendarid'],
-				'size'          => (int)$row['size'],
+				'size'          => (int) $row['size'],
 				'calendardata'  => $this->readBlob($row['calendardata']),
 				'component'     => strtolower($row['componenttype']),
-				'classification'=> (int)$row['classification']
+				'classification'=> (int) $row['classification']
 		];
 	}
 
@@ -870,12 +870,12 @@ 
 					'id'           => $row['id'],
 					'uri'          => $row['uri'],
 					'lastmodified' => $row['lastmodified'],
-					'etag'         => '"' . $row['etag'] . '"',
+					'etag'         => '"'.$row['etag'].'"',
 					'calendarid'   => $row['calendarid'],
-					'size'         => (int)$row['size'],
+					'size'         => (int) $row['size'],
 					'calendardata' => $this->readBlob($row['calendardata']),
 					'component'    => strtolower($row['componenttype']),
-					'classification' => (int)$row['classification']
+					'classification' => (int) $row['classification']
 				];
 			}
 			$result->closeCursor();
@@ -932,7 +932,7 @@ 
 		));
 		$this->addChange($calendarId, $objectUri, 1);
 
-		return '"' . $extraData['etag'] . '"';
+		return '"'.$extraData['etag'].'"';
 	}
 
 	/**
@@ -985,7 +985,7 @@ 
 		}
 		$this->addChange($calendarId, $objectUri, 2);
 
-		return '"' . $extraData['etag'] . '"';
+		return '"'.$extraData['etag'].'"';
 	}
 
 	/**
@@ -1136,7 +1136,7 @@ 
 		$stmt = $query->execute();
 
 		$result = [];
-		while($row = $stmt->fetch(\PDO::FETCH_ASSOC)) {
+		while ($row = $stmt->fetch(\PDO::FETCH_ASSOC)) {
 			if ($requirePostFilter) {
 				if (!$this->validateFilterForObject($row, $filters)) {
 					continue;
@@ -1179,7 +1179,7 @@ 
 		$stmt = $query->execute();
 
 		if ($row = $stmt->fetch(\PDO::FETCH_ASSOC)) {
-			return $row['calendaruri'] . '/' . $row['objecturi'];
+			return $row['calendaruri'].'/'.$row['objecturi'];
 		}
 
 		return null;
@@ -1244,7 +1244,7 @@ 
 	function getChangesForCalendar($calendarId, $syncToken, $syncLevel, $limit = null) {
 		// Current synctoken
 		$stmt = $this->db->prepare('SELECT `synctoken` FROM `*PREFIX*calendars` WHERE `id` = ?');
-		$stmt->execute([ $calendarId ]);
+		$stmt->execute([$calendarId]);
 		$currentToken = $stmt->fetchColumn(0);
 
 		if (is_null($currentToken)) {
@@ -1261,8 +1261,8 @@ 
 		if ($syncToken) {
 
 			$query = "SELECT `uri`, `operation` FROM `*PREFIX*calendarchanges` WHERE `synctoken` >= ? AND `synctoken` < ? AND `calendarid` = ? ORDER BY `synctoken`";
-			if ($limit>0) {
-				$query.= " `LIMIT` " . (int)$limit;
+			if ($limit > 0) {
+				$query .= " `LIMIT` ".(int) $limit;
 			}
 
 			// Fetching all changes
@@ -1273,15 +1273,15 @@ 
 
 			// This loop ensures that any duplicates are overwritten, only the
 			// last change on a node is relevant.
-			while($row = $stmt->fetch(\PDO::FETCH_ASSOC)) {
+			while ($row = $stmt->fetch(\PDO::FETCH_ASSOC)) {
 
 				$changes[$row['uri']] = $row['operation'];
 
 			}
 
-			foreach($changes as $uri => $operation) {
+			foreach ($changes as $uri => $operation) {
 
-				switch($operation) {
+				switch ($operation) {
 					case 1 :
 						$result['added'][] = $uri;
 						break;
@@ -1351,10 +1351,10 @@ 
 			->from('calendarsubscriptions')
 			->where($query->expr()->eq('principaluri', $query->createNamedParameter($principalUri)))
 			->orderBy('calendarorder', 'asc');
-		$stmt =$query->execute();
+		$stmt = $query->execute();
 
 		$subscriptions = [];
-		while($row = $stmt->fetch(\PDO::FETCH_ASSOC)) {
+		while ($row = $stmt->fetch(\PDO::FETCH_ASSOC)) {
 
 			$subscription = [
 				'id'           => $row['id'],
@@ -1363,10 +1363,10 @@ 
 				'source'       => $row['source'],
 				'lastmodified' => $row['lastmodified'],
 
-				'{' . Plugin::NS_CALDAV . '}supported-calendar-component-set' => new SupportedCalendarComponentSet(['VTODO', 'VEVENT']),
+				'{'.Plugin::NS_CALDAV.'}supported-calendar-component-set' => new SupportedCalendarComponentSet(['VTODO', 'VEVENT']),
 			];
 
-			foreach($this->subscriptionPropertyMap as $xmlName=>$dbName) {
+			foreach ($this->subscriptionPropertyMap as $xmlName=>$dbName) {
 				if (!is_null($row[$dbName])) {
 					$subscription[$xmlName] = $row[$dbName];
 				}
@@ -1405,7 +1405,7 @@ 
 
 		$propertiesBoolean = ['striptodos', 'stripalarms', 'stripattachments'];
 
-		foreach($this->subscriptionPropertyMap as $xmlName=>$dbName) {
+		foreach ($this->subscriptionPropertyMap as $xmlName=>$dbName) {
 			if (array_key_exists($xmlName, $properties)) {
 					$values[$dbName] = $properties[$xmlName];
 					if (in_array($dbName, $propertiesBoolean)) {
@@ -1453,7 +1453,7 @@ 
 
 			$newValues = [];
 
-			foreach($mutations as $propertyName=>$propertyValue) {
+			foreach ($mutations as $propertyName=>$propertyValue) {
 				if ($propertyName === '{http://calendarserver.org/ns/}source') {
 					$newValues['source'] = $propertyValue->getHref();
 				} else {
@@ -1465,7 +1465,7 @@ 
 			$query = $this->db->getQueryBuilder();
 			$query->update('calendarsubscriptions')
 				->set('lastmodified', $query->createNamedParameter(time()));
-			foreach($newValues as $fieldName=>$value) {
+			foreach ($newValues as $fieldName=>$value) {
 				$query->set($fieldName, $query->createNamedParameter($value));
 			}
 			$query->where($query->expr()->eq('id', $query->createNamedParameter($subscriptionId)))
@@ -1515,7 +1515,7 @@ 
 
 		$row = $stmt->fetch(\PDO::FETCH_ASSOC);
 
-		if(!$row) {
+		if (!$row) {
 			return null;
 		}
 
@@ -1523,8 +1523,8 @@ 
 				'uri'          => $row['uri'],
 				'calendardata' => $row['calendardata'],
 				'lastmodified' => $row['lastmodified'],
-				'etag'         => '"' . $row['etag'] . '"',
-				'size'         => (int)$row['size'],
+				'etag'         => '"'.$row['etag'].'"',
+				'size'         => (int) $row['size'],
 		];
 	}
 
@@ -1547,13 +1547,13 @@ 
 				->execute();
 
 		$result = [];
-		foreach($stmt->fetchAll(\PDO::FETCH_ASSOC) as $row) {
+		foreach ($stmt->fetchAll(\PDO::FETCH_ASSOC) as $row) {
 			$result[] = [
 					'calendardata' => $row['calendardata'],
 					'uri'          => $row['uri'],
 					'lastmodified' => $row['lastmodified'],
-					'etag'         => '"' . $row['etag'] . '"',
-					'size'         => (int)$row['size'],
+					'etag'         => '"'.$row['etag'].'"',
+					'size'         => (int) $row['size'],
 			];
 		}
 
@@ -1645,10 +1645,10 @@ 
 		$lastOccurrence = null;
 		$uid = null;
 		$classification = self::CLASSIFICATION_PUBLIC;
-		foreach($vObject->getComponents() as $component) {
-			if ($component->name!=='VTIMEZONE') {
+		foreach ($vObject->getComponents() as $component) {
+			if ($component->name !== 'VTIMEZONE') {
 				$componentType = $component->name;
-				$uid = (string)$component->UID;
+				$uid = (string) $component->UID;
 				break;
 			}
 		}
@@ -1673,13 +1673,13 @@ 
 					$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();
 

lib/private/Files/Filesystem.php

Doc Comments +31 added lines, -2 removed lines

@@ -360,6 +360,9 @@ 
 		}
 	}
 
+	/**
+	 * @param string $root
+	 */
 	static public function init($user, $root) {
 		if (self::$defaultInstance) {
 			return false;
@@ -528,7 +531,7 @@ 
 	/**
 	 * mount an \OC\Files\Storage\Storage in our virtual filesystem
 	 *
-	 * @param \OC\Files\Storage\Storage|string $class
+	 * @param string $class
 	 * @param array $arguments
 	 * @param string $mountpoint
 	 */
@@ -660,6 +663,9 @@ 
 		return self::$defaultInstance->is_dir($path);
 	}
 
+	/**
+	 * @param string $path
+	 */
 	static public function is_file($path) {
 		return self::$defaultInstance->is_file($path);
 	}
@@ -672,6 +678,9 @@ 
 		return self::$defaultInstance->filetype($path);
 	}
 
+	/**
+	 * @param string $path
+	 */
 	static public function filesize($path) {
 		return self::$defaultInstance->filesize($path);
 	}
@@ -684,6 +693,9 @@ 
 		return self::$defaultInstance->isCreatable($path);
 	}
 
+	/**
+	 * @param string $path
+	 */
 	static public function isReadable($path) {
 		return self::$defaultInstance->isReadable($path);
 	}
@@ -696,6 +708,9 @@ 
 		return self::$defaultInstance->isDeletable($path);
 	}
 
+	/**
+	 * @param string $path
+	 */
 	static public function isSharable($path) {
 		return self::$defaultInstance->isSharable($path);
 	}
@@ -704,6 +719,9 @@ 
 		return self::$defaultInstance->file_exists($path);
 	}
 
+	/**
+	 * @param string $path
+	 */
 	static public function filemtime($path) {
 		return self::$defaultInstance->filemtime($path);
 	}
@@ -713,6 +731,7 @@ 
 	}
 
 	/**
+	 * @param string $path
 	 * @return string
 	 */
 	static public function file_get_contents($path) {
@@ -735,6 +754,10 @@ 
 		return self::$defaultInstance->copy($path1, $path2);
 	}
 
+	/**
+	 * @param string $path
+	 * @param string $mode
+	 */
 	static public function fopen($path, $mode) {
 		return self::$defaultInstance->fopen($path, $mode);
 	}
@@ -750,6 +773,9 @@ 
 		return self::$defaultInstance->fromTmpFile($tmpFile, $path);
 	}
 
+	/**
+	 * @param string $path
+	 */
 	static public function getMimeType($path) {
 		return self::$defaultInstance->getMimeType($path);
 	}
@@ -762,6 +788,9 @@ 
 		return self::$defaultInstance->free_space($path);
 	}
 
+	/**
+	 * @param string $query
+	 */
 	static public function search($query) {
 		return self::$defaultInstance->search($query);
 	}
@@ -870,7 +899,7 @@ 
 	 * @param string $path
 	 * @param boolean $includeMountPoints whether to add mountpoint sizes,
 	 * defaults to true
-	 * @return \OC\Files\FileInfo|bool False if file does not exist
+	 * @return \OCP\Files\FileInfo|null False if file does not exist
 	 */
 	public static function getFileInfo($path, $includeMountPoints = true) {
 		return self::$defaultInstance->getFileInfo($path, $includeMountPoints);

Unused Use Statements -1 removed lines

@@ -64,7 +64,6 @@
 use OC\Files\Storage\StorageFactory;
 use OC\Lockdown\Filesystem\NullStorage;
 use OCP\Files\Config\IMountProvider;
-use OCP\Files\Mount\IMountPoint;
 use OCP\Files\NotFoundException;
 use OCP\IUserManager;
 

Indentation +862 added lines, -862 removed lines

@@ -70,866 +70,866 @@
 
 class Filesystem {
 
-	/**
-	 * @var Mount\Manager $mounts
-	 */
-	private static $mounts;
-
-	public static $loaded = false;
-	/**
-	 * @var \OC\Files\View $defaultInstance
-	 */
-	static private $defaultInstance;
-
-	static private $usersSetup = array();
-
-	static private $normalizedPathCache = null;
-
-	static private $listeningForProviders = false;
-
-	/**
-	 * classname which used for hooks handling
-	 * used as signalclass in OC_Hooks::emit()
-	 */
-	const CLASSNAME = 'OC_Filesystem';
-
-	/**
-	 * signalname emitted before file renaming
-	 *
-	 * @param string $oldpath
-	 * @param string $newpath
-	 */
-	const signal_rename = 'rename';
-
-	/**
-	 * signal emitted after file renaming
-	 *
-	 * @param string $oldpath
-	 * @param string $newpath
-	 */
-	const signal_post_rename = 'post_rename';
-
-	/**
-	 * signal emitted before file/dir creation
-	 *
-	 * @param string $path
-	 * @param bool $run changing this flag to false in hook handler will cancel event
-	 */
-	const signal_create = 'create';
-
-	/**
-	 * signal emitted after file/dir creation
-	 *
-	 * @param string $path
-	 * @param bool $run changing this flag to false in hook handler will cancel event
-	 */
-	const signal_post_create = 'post_create';
-
-	/**
-	 * signal emits before file/dir copy
-	 *
-	 * @param string $oldpath
-	 * @param string $newpath
-	 * @param bool $run changing this flag to false in hook handler will cancel event
-	 */
-	const signal_copy = 'copy';
-
-	/**
-	 * signal emits after file/dir copy
-	 *
-	 * @param string $oldpath
-	 * @param string $newpath
-	 */
-	const signal_post_copy = 'post_copy';
-
-	/**
-	 * signal emits before file/dir save
-	 *
-	 * @param string $path
-	 * @param bool $run changing this flag to false in hook handler will cancel event
-	 */
-	const signal_write = 'write';
-
-	/**
-	 * signal emits after file/dir save
-	 *
-	 * @param string $path
-	 */
-	const signal_post_write = 'post_write';
-
-	/**
-	 * signal emitted before file/dir update
-	 *
-	 * @param string $path
-	 * @param bool $run changing this flag to false in hook handler will cancel event
-	 */
-	const signal_update = 'update';
-
-	/**
-	 * signal emitted after file/dir update
-	 *
-	 * @param string $path
-	 * @param bool $run changing this flag to false in hook handler will cancel event
-	 */
-	const signal_post_update = 'post_update';
-
-	/**
-	 * signal emits when reading file/dir
-	 *
-	 * @param string $path
-	 */
-	const signal_read = 'read';
-
-	/**
-	 * signal emits when removing file/dir
-	 *
-	 * @param string $path
-	 */
-	const signal_delete = 'delete';
-
-	/**
-	 * parameters definitions for signals
-	 */
-	const signal_param_path = 'path';
-	const signal_param_oldpath = 'oldpath';
-	const signal_param_newpath = 'newpath';
-
-	/**
-	 * run - changing this flag to false in hook handler will cancel event
-	 */
-	const signal_param_run = 'run';
-
-	const signal_create_mount = 'create_mount';
-	const signal_delete_mount = 'delete_mount';
-	const signal_param_mount_type = 'mounttype';
-	const signal_param_users = 'users';
-
-	/**
-	 * @var \OC\Files\Storage\StorageFactory $loader
-	 */
-	private static $loader;
-
-	/** @var bool */
-	private static $logWarningWhenAddingStorageWrapper = true;
-
-	/**
-	 * @param bool $shouldLog
-	 * @return bool previous value
-	 * @internal
-	 */
-	public static function logWarningWhenAddingStorageWrapper($shouldLog) {
-		$previousValue = self::$logWarningWhenAddingStorageWrapper;
-		self::$logWarningWhenAddingStorageWrapper = (bool) $shouldLog;
-		return $previousValue;
-	}
-
-	/**
-	 * @param string $wrapperName
-	 * @param callable $wrapper
-	 * @param int $priority
-	 */
-	public static function addStorageWrapper($wrapperName, $wrapper, $priority = 50) {
-		if (self::$logWarningWhenAddingStorageWrapper) {
-			\OC::$server->getLogger()->warning("Storage wrapper '{wrapper}' was not registered via the 'OC_Filesystem - preSetup' hook which could cause potential problems.", [
-				'wrapper' => $wrapperName,
-				'app' => 'filesystem',
-			]);
-		}
-
-		$mounts = self::getMountManager()->getAll();
-		if (!self::getLoader()->addStorageWrapper($wrapperName, $wrapper, $priority, $mounts)) {
-			// do not re-wrap if storage with this name already existed
-			return;
-		}
-	}
-
-	/**
-	 * Returns the storage factory
-	 *
-	 * @return \OCP\Files\Storage\IStorageFactory
-	 */
-	public static function getLoader() {
-		if (!self::$loader) {
-			self::$loader = new StorageFactory();
-		}
-		return self::$loader;
-	}
-
-	/**
-	 * Returns the mount manager
-	 *
-	 * @return \OC\Files\Mount\Manager
-	 */
-	public static function getMountManager($user = '') {
-		if (!self::$mounts) {
-			\OC_Util::setupFS($user);
-		}
-		return self::$mounts;
-	}
-
-	/**
-	 * get the mountpoint of the storage object for a path
-	 * ( note: because a storage is not always mounted inside the fakeroot, the
-	 * returned mountpoint is relative to the absolute root of the filesystem
-	 * and doesn't take the chroot into account )
-	 *
-	 * @param string $path
-	 * @return string
-	 */
-	static public function getMountPoint($path) {
-		if (!self::$mounts) {
-			\OC_Util::setupFS();
-		}
-		$mount = self::$mounts->find($path);
-		if ($mount) {
-			return $mount->getMountPoint();
-		} else {
-			return '';
-		}
-	}
-
-	/**
-	 * get a list of all mount points in a directory
-	 *
-	 * @param string $path
-	 * @return string[]
-	 */
-	static public function getMountPoints($path) {
-		if (!self::$mounts) {
-			\OC_Util::setupFS();
-		}
-		$result = array();
-		$mounts = self::$mounts->findIn($path);
-		foreach ($mounts as $mount) {
-			$result[] = $mount->getMountPoint();
-		}
-		return $result;
-	}
-
-	/**
-	 * get the storage mounted at $mountPoint
-	 *
-	 * @param string $mountPoint
-	 * @return \OC\Files\Storage\Storage
-	 */
-	public static function getStorage($mountPoint) {
-		if (!self::$mounts) {
-			\OC_Util::setupFS();
-		}
-		$mount = self::$mounts->find($mountPoint);
-		return $mount->getStorage();
-	}
-
-	/**
-	 * @param string $id
-	 * @return Mount\MountPoint[]
-	 */
-	public static function getMountByStorageId($id) {
-		if (!self::$mounts) {
-			\OC_Util::setupFS();
-		}
-		return self::$mounts->findByStorageId($id);
-	}
-
-	/**
-	 * @param int $id
-	 * @return Mount\MountPoint[]
-	 */
-	public static function getMountByNumericId($id) {
-		if (!self::$mounts) {
-			\OC_Util::setupFS();
-		}
-		return self::$mounts->findByNumericId($id);
-	}
-
-	/**
-	 * resolve a path to a storage and internal path
-	 *
-	 * @param string $path
-	 * @return array an array consisting of the storage and the internal path
-	 */
-	static public function resolvePath($path) {
-		if (!self::$mounts) {
-			\OC_Util::setupFS();
-		}
-		$mount = self::$mounts->find($path);
-		if ($mount) {
-			return array($mount->getStorage(), rtrim($mount->getInternalPath($path), '/'));
-		} else {
-			return array(null, null);
-		}
-	}
-
-	static public function init($user, $root) {
-		if (self::$defaultInstance) {
-			return false;
-		}
-		self::getLoader();
-		self::$defaultInstance = new View($root);
-
-		if (!self::$mounts) {
-			self::$mounts = \OC::$server->getMountManager();
-		}
-
-		//load custom mount config
-		self::initMountPoints($user);
-
-		self::$loaded = true;
-
-		return true;
-	}
-
-	static public function initMountManager() {
-		if (!self::$mounts) {
-			self::$mounts = \OC::$server->getMountManager();
-		}
-	}
-
-	/**
-	 * Initialize system and personal mount points for a user
-	 *
-	 * @param string $user
-	 * @throws \OC\User\NoUserException if the user is not available
-	 */
-	public static function initMountPoints($user = '') {
-		if ($user == '') {
-			$user = \OC_User::getUser();
-		}
-		if ($user === null || $user === false || $user === '') {
-			throw new \OC\User\NoUserException('Attempted to initialize mount points for null user and no user in session');
-		}
-
-		if (isset(self::$usersSetup[$user])) {
-			return;
-		}
-
-		self::$usersSetup[$user] = true;
-
-		$userManager = \OC::$server->getUserManager();
-		$userObject = $userManager->get($user);
-
-		if (is_null($userObject)) {
-			\OCP\Util::writeLog('files', ' Backends provided no user object for ' . $user, \OCP\Util::ERROR);
-			// reset flag, this will make it possible to rethrow the exception if called again
-			unset(self::$usersSetup[$user]);
-			throw new \OC\User\NoUserException('Backends provided no user object for ' . $user);
-		}
-
-		$realUid = $userObject->getUID();
-		// workaround in case of different casings
-		if ($user !== $realUid) {
-			$stack = json_encode(debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, 50));
-			\OCP\Util::writeLog('files', 'initMountPoints() called with wrong user casing. This could be a bug. Expected: "' . $realUid . '" got "' . $user . '". Stack: ' . $stack, \OCP\Util::WARN);
-			$user = $realUid;
-
-			// again with the correct casing
-			if (isset(self::$usersSetup[$user])) {
-				return;
-			}
-
-			self::$usersSetup[$user] = true;
-		}
-
-		if (\OC::$server->getLockdownManager()->canAccessFilesystem()) {
-			/** @var \OC\Files\Config\MountProviderCollection $mountConfigManager */
-			$mountConfigManager = \OC::$server->getMountProviderCollection();
-
-			// home mounts are handled seperate since we need to ensure this is mounted before we call the other mount providers
-			$homeMount = $mountConfigManager->getHomeMountForUser($userObject);
-
-			self::getMountManager()->addMount($homeMount);
-
-			\OC\Files\Filesystem::getStorage($user);
-
-			// Chance to mount for other storages
-			if ($userObject) {
-				$mounts = $mountConfigManager->getMountsForUser($userObject);
-				array_walk($mounts, array(self::$mounts, 'addMount'));
-				$mounts[] = $homeMount;
-				$mountConfigManager->registerMounts($userObject, $mounts);
-			}
-
-			self::listenForNewMountProviders($mountConfigManager, $userManager);
-		} else {
-			self::getMountManager()->addMount(new MountPoint(
-				new NullStorage([]),
-				'/' . $user
-			));
-			self::getMountManager()->addMount(new MountPoint(
-				new NullStorage([]),
-				'/' . $user . '/files'
-			));
-		}
-		\OC_Hook::emit('OC_Filesystem', 'post_initMountPoints', array('user' => $user));
-	}
-
-	/**
-	 * Get mounts from mount providers that are registered after setup
-	 *
-	 * @param MountProviderCollection $mountConfigManager
-	 * @param IUserManager $userManager
-	 */
-	private static function listenForNewMountProviders(MountProviderCollection $mountConfigManager, IUserManager $userManager) {
-		if (!self::$listeningForProviders) {
-			self::$listeningForProviders = true;
-			$mountConfigManager->listen('\OC\Files\Config', 'registerMountProvider', function (IMountProvider $provider) use ($userManager) {
-				foreach (Filesystem::$usersSetup as $user => $setup) {
-					$userObject = $userManager->get($user);
-					if ($userObject) {
-						$mounts = $provider->getMountsForUser($userObject, Filesystem::getLoader());
-						array_walk($mounts, array(self::$mounts, 'addMount'));
-					}
-				}
-			});
-		}
-	}
-
-	/**
-	 * get the default filesystem view
-	 *
-	 * @return View
-	 */
-	static public function getView() {
-		return self::$defaultInstance;
-	}
-
-	/**
-	 * tear down the filesystem, removing all storage providers
-	 */
-	static public function tearDown() {
-		self::clearMounts();
-		self::$defaultInstance = null;
-	}
-
-	/**
-	 * get the relative path of the root data directory for the current user
-	 *
-	 * @return string
-	 *
-	 * Returns path like /admin/files
-	 */
-	static public function getRoot() {
-		if (!self::$defaultInstance) {
-			return null;
-		}
-		return self::$defaultInstance->getRoot();
-	}
-
-	/**
-	 * clear all mounts and storage backends
-	 */
-	public static function clearMounts() {
-		if (self::$mounts) {
-			self::$usersSetup = array();
-			self::$mounts->clear();
-		}
-	}
-
-	/**
-	 * mount an \OC\Files\Storage\Storage in our virtual filesystem
-	 *
-	 * @param \OC\Files\Storage\Storage|string $class
-	 * @param array $arguments
-	 * @param string $mountpoint
-	 */
-	static public function mount($class, $arguments, $mountpoint) {
-		if (!self::$mounts) {
-			\OC_Util::setupFS();
-		}
-		$mount = new Mount\MountPoint($class, $mountpoint, $arguments, self::getLoader());
-		self::$mounts->addMount($mount);
-	}
-
-	/**
-	 * return the path to a local version of the file
-	 * we need this because we can't know if a file is stored local or not from
-	 * outside the filestorage and for some purposes a local file is needed
-	 *
-	 * @param string $path
-	 * @return string
-	 */
-	static public function getLocalFile($path) {
-		return self::$defaultInstance->getLocalFile($path);
-	}
-
-	/**
-	 * @param string $path
-	 * @return string
-	 */
-	static public function getLocalFolder($path) {
-		return self::$defaultInstance->getLocalFolder($path);
-	}
-
-	/**
-	 * return path to file which reflects one visible in browser
-	 *
-	 * @param string $path
-	 * @return string
-	 */
-	static public function getLocalPath($path) {
-		$datadir = \OC_User::getHome(\OC_User::getUser()) . '/files';
-		$newpath = $path;
-		if (strncmp($newpath, $datadir, strlen($datadir)) == 0) {
-			$newpath = substr($path, strlen($datadir));
-		}
-		return $newpath;
-	}
-
-	/**
-	 * check if the requested path is valid
-	 *
-	 * @param string $path
-	 * @return bool
-	 */
-	static public function isValidPath($path) {
-		$path = self::normalizePath($path);
-		if (!$path || $path[0] !== '/') {
-			$path = '/' . $path;
-		}
-		if (strpos($path, '/../') !== false || strrchr($path, '/') === '/..') {
-			return false;
-		}
-		return true;
-	}
-
-	/**
-	 * checks if a file is blacklisted for storage in the filesystem
-	 * Listens to write and rename hooks
-	 *
-	 * @param array $data from hook
-	 */
-	static public function isBlacklisted($data) {
-		if (isset($data['path'])) {
-			$path = $data['path'];
-		} else if (isset($data['newpath'])) {
-			$path = $data['newpath'];
-		}
-		if (isset($path)) {
-			if (self::isFileBlacklisted($path)) {
-				$data['run'] = false;
-			}
-		}
-	}
-
-	/**
-	 * @param string $filename
-	 * @return bool
-	 */
-	static public function isFileBlacklisted($filename) {
-		$filename = self::normalizePath($filename);
-
-		$blacklist = \OC::$server->getConfig()->getSystemValue('blacklisted_files', array('.htaccess'));
-		$filename = strtolower(basename($filename));
-		return in_array($filename, $blacklist);
-	}
-
-	/**
-	 * check if the directory should be ignored when scanning
-	 * NOTE: the special directories . and .. would cause never ending recursion
-	 *
-	 * @param String $dir
-	 * @return boolean
-	 */
-	static public function isIgnoredDir($dir) {
-		if ($dir === '.' || $dir === '..') {
-			return true;
-		}
-		return false;
-	}
-
-	/**
-	 * following functions are equivalent to their php builtin equivalents for arguments/return values.
-	 */
-	static public function mkdir($path) {
-		return self::$defaultInstance->mkdir($path);
-	}
-
-	static public function rmdir($path) {
-		return self::$defaultInstance->rmdir($path);
-	}
-
-	static public function opendir($path) {
-		return self::$defaultInstance->opendir($path);
-	}
-
-	static public function readdir($path) {
-		return self::$defaultInstance->readdir($path);
-	}
-
-	static public function is_dir($path) {
-		return self::$defaultInstance->is_dir($path);
-	}
-
-	static public function is_file($path) {
-		return self::$defaultInstance->is_file($path);
-	}
-
-	static public function stat($path) {
-		return self::$defaultInstance->stat($path);
-	}
-
-	static public function filetype($path) {
-		return self::$defaultInstance->filetype($path);
-	}
-
-	static public function filesize($path) {
-		return self::$defaultInstance->filesize($path);
-	}
-
-	static public function readfile($path) {
-		return self::$defaultInstance->readfile($path);
-	}
-
-	static public function isCreatable($path) {
-		return self::$defaultInstance->isCreatable($path);
-	}
-
-	static public function isReadable($path) {
-		return self::$defaultInstance->isReadable($path);
-	}
-
-	static public function isUpdatable($path) {
-		return self::$defaultInstance->isUpdatable($path);
-	}
-
-	static public function isDeletable($path) {
-		return self::$defaultInstance->isDeletable($path);
-	}
-
-	static public function isSharable($path) {
-		return self::$defaultInstance->isSharable($path);
-	}
-
-	static public function file_exists($path) {
-		return self::$defaultInstance->file_exists($path);
-	}
-
-	static public function filemtime($path) {
-		return self::$defaultInstance->filemtime($path);
-	}
-
-	static public function touch($path, $mtime = null) {
-		return self::$defaultInstance->touch($path, $mtime);
-	}
-
-	/**
-	 * @return string
-	 */
-	static public function file_get_contents($path) {
-		return self::$defaultInstance->file_get_contents($path);
-	}
-
-	static public function file_put_contents($path, $data) {
-		return self::$defaultInstance->file_put_contents($path, $data);
-	}
-
-	static public function unlink($path) {
-		return self::$defaultInstance->unlink($path);
-	}
-
-	static public function rename($path1, $path2) {
-		return self::$defaultInstance->rename($path1, $path2);
-	}
-
-	static public function copy($path1, $path2) {
-		return self::$defaultInstance->copy($path1, $path2);
-	}
-
-	static public function fopen($path, $mode) {
-		return self::$defaultInstance->fopen($path, $mode);
-	}
-
-	/**
-	 * @return string
-	 */
-	static public function toTmpFile($path) {
-		return self::$defaultInstance->toTmpFile($path);
-	}
-
-	static public function fromTmpFile($tmpFile, $path) {
-		return self::$defaultInstance->fromTmpFile($tmpFile, $path);
-	}
-
-	static public function getMimeType($path) {
-		return self::$defaultInstance->getMimeType($path);
-	}
-
-	static public function hash($type, $path, $raw = false) {
-		return self::$defaultInstance->hash($type, $path, $raw);
-	}
-
-	static public function free_space($path = '/') {
-		return self::$defaultInstance->free_space($path);
-	}
-
-	static public function search($query) {
-		return self::$defaultInstance->search($query);
-	}
-
-	/**
-	 * @param string $query
-	 */
-	static public function searchByMime($query) {
-		return self::$defaultInstance->searchByMime($query);
-	}
-
-	/**
-	 * @param string|int $tag name or tag id
-	 * @param string $userId owner of the tags
-	 * @return FileInfo[] array or file info
-	 */
-	static public function searchByTag($tag, $userId) {
-		return self::$defaultInstance->searchByTag($tag, $userId);
-	}
-
-	/**
-	 * check if a file or folder has been updated since $time
-	 *
-	 * @param string $path
-	 * @param int $time
-	 * @return bool
-	 */
-	static public function hasUpdated($path, $time) {
-		return self::$defaultInstance->hasUpdated($path, $time);
-	}
-
-	/**
-	 * Fix common problems with a file path
-	 *
-	 * @param string $path
-	 * @param bool $stripTrailingSlash whether to strip the trailing slash
-	 * @param bool $isAbsolutePath whether the given path is absolute
-	 * @param bool $keepUnicode true to disable unicode normalization
-	 * @return string
-	 */
-	public static function normalizePath($path, $stripTrailingSlash = true, $isAbsolutePath = false, $keepUnicode = false) {
-		if (is_null(self::$normalizedPathCache)) {
-			self::$normalizedPathCache = new CappedMemoryCache();
-		}
-
-		/**
-		 * FIXME: This is a workaround for existing classes and files which call
-		 *        this function with another type than a valid string. This
-		 *        conversion should get removed as soon as all existing
-		 *        function calls have been fixed.
-		 */
-		$path = (string)$path;
-
-		$cacheKey = json_encode([$path, $stripTrailingSlash, $isAbsolutePath, $keepUnicode]);
-
-		if (isset(self::$normalizedPathCache[$cacheKey])) {
-			return self::$normalizedPathCache[$cacheKey];
-		}
-
-		if ($path == '') {
-			return '/';
-		}
-
-		//normalize unicode if possible
-		if (!$keepUnicode) {
-			$path = \OC_Util::normalizeUnicode($path);
-		}
-
-		//no windows style slashes
-		$path = str_replace('\\', '/', $path);
-
-		//add leading slash
-		if ($path[0] !== '/') {
-			$path = '/' . $path;
-		}
-
-		// remove '/./'
-		// ugly, but str_replace() can't replace them all in one go
-		// as the replacement itself is part of the search string
-		// which will only be found during the next iteration
-		while (strpos($path, '/./') !== false) {
-			$path = str_replace('/./', '/', $path);
-		}
-		// remove sequences of slashes
-		$path = preg_replace('#/{2,}#', '/', $path);
-
-		//remove trailing slash
-		if ($stripTrailingSlash and strlen($path) > 1 and substr($path, -1, 1) === '/') {
-			$path = substr($path, 0, -1);
-		}
-
-		// remove trailing '/.'
-		if (substr($path, -2) == '/.') {
-			$path = substr($path, 0, -2);
-		}
-
-		$normalizedPath = $path;
-		self::$normalizedPathCache[$cacheKey] = $normalizedPath;
-
-		return $normalizedPath;
-	}
-
-	/**
-	 * get the filesystem info
-	 *
-	 * @param string $path
-	 * @param boolean $includeMountPoints whether to add mountpoint sizes,
-	 * defaults to true
-	 * @return \OC\Files\FileInfo|bool False if file does not exist
-	 */
-	public static function getFileInfo($path, $includeMountPoints = true) {
-		return self::$defaultInstance->getFileInfo($path, $includeMountPoints);
-	}
-
-	/**
-	 * change file metadata
-	 *
-	 * @param string $path
-	 * @param array $data
-	 * @return int
-	 *
-	 * returns the fileid of the updated file
-	 */
-	public static function putFileInfo($path, $data) {
-		return self::$defaultInstance->putFileInfo($path, $data);
-	}
-
-	/**
-	 * get the content of a directory
-	 *
-	 * @param string $directory path under datadirectory
-	 * @param string $mimetype_filter limit returned content to this mimetype or mimepart
-	 * @return \OC\Files\FileInfo[]
-	 */
-	public static function getDirectoryContent($directory, $mimetype_filter = '') {
-		return self::$defaultInstance->getDirectoryContent($directory, $mimetype_filter);
-	}
-
-	/**
-	 * Get the path of a file by id
-	 *
-	 * Note that the resulting path is not guaranteed to be unique for the id, multiple paths can point to the same file
-	 *
-	 * @param int $id
-	 * @throws NotFoundException
-	 * @return string
-	 */
-	public static function getPath($id) {
-		return self::$defaultInstance->getPath($id);
-	}
-
-	/**
-	 * Get the owner for a file or folder
-	 *
-	 * @param string $path
-	 * @return string
-	 */
-	public static function getOwner($path) {
-		return self::$defaultInstance->getOwner($path);
-	}
-
-	/**
-	 * get the ETag for a file or folder
-	 *
-	 * @param string $path
-	 * @return string
-	 */
-	static public function getETag($path) {
-		return self::$defaultInstance->getETag($path);
-	}
+    /**
+     * @var Mount\Manager $mounts
+     */
+    private static $mounts;
+
+    public static $loaded = false;
+    /**
+     * @var \OC\Files\View $defaultInstance
+     */
+    static private $defaultInstance;
+
+    static private $usersSetup = array();
+
+    static private $normalizedPathCache = null;
+
+    static private $listeningForProviders = false;
+
+    /**
+     * classname which used for hooks handling
+     * used as signalclass in OC_Hooks::emit()
+     */
+    const CLASSNAME = 'OC_Filesystem';
+
+    /**
+     * signalname emitted before file renaming
+     *
+     * @param string $oldpath
+     * @param string $newpath
+     */
+    const signal_rename = 'rename';
+
+    /**
+     * signal emitted after file renaming
+     *
+     * @param string $oldpath
+     * @param string $newpath
+     */
+    const signal_post_rename = 'post_rename';
+
+    /**
+     * signal emitted before file/dir creation
+     *
+     * @param string $path
+     * @param bool $run changing this flag to false in hook handler will cancel event
+     */
+    const signal_create = 'create';
+
+    /**
+     * signal emitted after file/dir creation
+     *
+     * @param string $path
+     * @param bool $run changing this flag to false in hook handler will cancel event
+     */
+    const signal_post_create = 'post_create';
+
+    /**
+     * signal emits before file/dir copy
+     *
+     * @param string $oldpath
+     * @param string $newpath
+     * @param bool $run changing this flag to false in hook handler will cancel event
+     */
+    const signal_copy = 'copy';
+
+    /**
+     * signal emits after file/dir copy
+     *
+     * @param string $oldpath
+     * @param string $newpath
+     */
+    const signal_post_copy = 'post_copy';
+
+    /**
+     * signal emits before file/dir save
+     *
+     * @param string $path
+     * @param bool $run changing this flag to false in hook handler will cancel event
+     */
+    const signal_write = 'write';
+
+    /**
+     * signal emits after file/dir save
+     *
+     * @param string $path
+     */
+    const signal_post_write = 'post_write';
+
+    /**
+     * signal emitted before file/dir update
+     *
+     * @param string $path
+     * @param bool $run changing this flag to false in hook handler will cancel event
+     */
+    const signal_update = 'update';
+
+    /**
+     * signal emitted after file/dir update
+     *
+     * @param string $path
+     * @param bool $run changing this flag to false in hook handler will cancel event
+     */
+    const signal_post_update = 'post_update';
+
+    /**
+     * signal emits when reading file/dir
+     *
+     * @param string $path
+     */
+    const signal_read = 'read';
+
+    /**
+     * signal emits when removing file/dir
+     *
+     * @param string $path
+     */
+    const signal_delete = 'delete';
+
+    /**
+     * parameters definitions for signals
+     */
+    const signal_param_path = 'path';
+    const signal_param_oldpath = 'oldpath';
+    const signal_param_newpath = 'newpath';
+
+    /**
+     * run - changing this flag to false in hook handler will cancel event
+     */
+    const signal_param_run = 'run';
+
+    const signal_create_mount = 'create_mount';
+    const signal_delete_mount = 'delete_mount';
+    const signal_param_mount_type = 'mounttype';
+    const signal_param_users = 'users';
+
+    /**
+     * @var \OC\Files\Storage\StorageFactory $loader
+     */
+    private static $loader;
+
+    /** @var bool */
+    private static $logWarningWhenAddingStorageWrapper = true;
+
+    /**
+     * @param bool $shouldLog
+     * @return bool previous value
+     * @internal
+     */
+    public static function logWarningWhenAddingStorageWrapper($shouldLog) {
+        $previousValue = self::$logWarningWhenAddingStorageWrapper;
+        self::$logWarningWhenAddingStorageWrapper = (bool) $shouldLog;
+        return $previousValue;
+    }
+
+    /**
+     * @param string $wrapperName
+     * @param callable $wrapper
+     * @param int $priority
+     */
+    public static function addStorageWrapper($wrapperName, $wrapper, $priority = 50) {
+        if (self::$logWarningWhenAddingStorageWrapper) {
+            \OC::$server->getLogger()->warning("Storage wrapper '{wrapper}' was not registered via the 'OC_Filesystem - preSetup' hook which could cause potential problems.", [
+                'wrapper' => $wrapperName,
+                'app' => 'filesystem',
+            ]);
+        }
+
+        $mounts = self::getMountManager()->getAll();
+        if (!self::getLoader()->addStorageWrapper($wrapperName, $wrapper, $priority, $mounts)) {
+            // do not re-wrap if storage with this name already existed
+            return;
+        }
+    }
+
+    /**
+     * Returns the storage factory
+     *
+     * @return \OCP\Files\Storage\IStorageFactory
+     */
+    public static function getLoader() {
+        if (!self::$loader) {
+            self::$loader = new StorageFactory();
+        }
+        return self::$loader;
+    }
+
+    /**
+     * Returns the mount manager
+     *
+     * @return \OC\Files\Mount\Manager
+     */
+    public static function getMountManager($user = '') {
+        if (!self::$mounts) {
+            \OC_Util::setupFS($user);
+        }
+        return self::$mounts;
+    }
+
+    /**
+     * get the mountpoint of the storage object for a path
+     * ( note: because a storage is not always mounted inside the fakeroot, the
+     * returned mountpoint is relative to the absolute root of the filesystem
+     * and doesn't take the chroot into account )
+     *
+     * @param string $path
+     * @return string
+     */
+    static public function getMountPoint($path) {
+        if (!self::$mounts) {
+            \OC_Util::setupFS();
+        }
+        $mount = self::$mounts->find($path);
+        if ($mount) {
+            return $mount->getMountPoint();
+        } else {
+            return '';
+        }
+    }
+
+    /**
+     * get a list of all mount points in a directory
+     *
+     * @param string $path
+     * @return string[]
+     */
+    static public function getMountPoints($path) {
+        if (!self::$mounts) {
+            \OC_Util::setupFS();
+        }
+        $result = array();
+        $mounts = self::$mounts->findIn($path);
+        foreach ($mounts as $mount) {
+            $result[] = $mount->getMountPoint();
+        }
+        return $result;
+    }
+
+    /**
+     * get the storage mounted at $mountPoint
+     *
+     * @param string $mountPoint
+     * @return \OC\Files\Storage\Storage
+     */
+    public static function getStorage($mountPoint) {
+        if (!self::$mounts) {
+            \OC_Util::setupFS();
+        }
+        $mount = self::$mounts->find($mountPoint);
+        return $mount->getStorage();
+    }
+
+    /**
+     * @param string $id
+     * @return Mount\MountPoint[]
+     */
+    public static function getMountByStorageId($id) {
+        if (!self::$mounts) {
+            \OC_Util::setupFS();
+        }
+        return self::$mounts->findByStorageId($id);
+    }
+
+    /**
+     * @param int $id
+     * @return Mount\MountPoint[]
+     */
+    public static function getMountByNumericId($id) {
+        if (!self::$mounts) {
+            \OC_Util::setupFS();
+        }
+        return self::$mounts->findByNumericId($id);
+    }
+
+    /**
+     * resolve a path to a storage and internal path
+     *
+     * @param string $path
+     * @return array an array consisting of the storage and the internal path
+     */
+    static public function resolvePath($path) {
+        if (!self::$mounts) {
+            \OC_Util::setupFS();
+        }
+        $mount = self::$mounts->find($path);
+        if ($mount) {
+            return array($mount->getStorage(), rtrim($mount->getInternalPath($path), '/'));
+        } else {
+            return array(null, null);
+        }
+    }
+
+    static public function init($user, $root) {
+        if (self::$defaultInstance) {
+            return false;
+        }
+        self::getLoader();
+        self::$defaultInstance = new View($root);
+
+        if (!self::$mounts) {
+            self::$mounts = \OC::$server->getMountManager();
+        }
+
+        //load custom mount config
+        self::initMountPoints($user);
+
+        self::$loaded = true;
+
+        return true;
+    }
+
+    static public function initMountManager() {
+        if (!self::$mounts) {
+            self::$mounts = \OC::$server->getMountManager();
+        }
+    }
+
+    /**
+     * Initialize system and personal mount points for a user
+     *
+     * @param string $user
+     * @throws \OC\User\NoUserException if the user is not available
+     */
+    public static function initMountPoints($user = '') {
+        if ($user == '') {
+            $user = \OC_User::getUser();
+        }
+        if ($user === null || $user === false || $user === '') {
+            throw new \OC\User\NoUserException('Attempted to initialize mount points for null user and no user in session');
+        }
+
+        if (isset(self::$usersSetup[$user])) {
+            return;
+        }
+
+        self::$usersSetup[$user] = true;
+
+        $userManager = \OC::$server->getUserManager();
+        $userObject = $userManager->get($user);
+
+        if (is_null($userObject)) {
+            \OCP\Util::writeLog('files', ' Backends provided no user object for ' . $user, \OCP\Util::ERROR);
+            // reset flag, this will make it possible to rethrow the exception if called again
+            unset(self::$usersSetup[$user]);
+            throw new \OC\User\NoUserException('Backends provided no user object for ' . $user);
+        }
+
+        $realUid = $userObject->getUID();
+        // workaround in case of different casings
+        if ($user !== $realUid) {
+            $stack = json_encode(debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, 50));
+            \OCP\Util::writeLog('files', 'initMountPoints() called with wrong user casing. This could be a bug. Expected: "' . $realUid . '" got "' . $user . '". Stack: ' . $stack, \OCP\Util::WARN);
+            $user = $realUid;
+
+            // again with the correct casing
+            if (isset(self::$usersSetup[$user])) {
+                return;
+            }
+
+            self::$usersSetup[$user] = true;
+        }
+
+        if (\OC::$server->getLockdownManager()->canAccessFilesystem()) {
+            /** @var \OC\Files\Config\MountProviderCollection $mountConfigManager */
+            $mountConfigManager = \OC::$server->getMountProviderCollection();
+
+            // home mounts are handled seperate since we need to ensure this is mounted before we call the other mount providers
+            $homeMount = $mountConfigManager->getHomeMountForUser($userObject);
+
+            self::getMountManager()->addMount($homeMount);
+
+            \OC\Files\Filesystem::getStorage($user);
+
+            // Chance to mount for other storages
+            if ($userObject) {
+                $mounts = $mountConfigManager->getMountsForUser($userObject);
+                array_walk($mounts, array(self::$mounts, 'addMount'));
+                $mounts[] = $homeMount;
+                $mountConfigManager->registerMounts($userObject, $mounts);
+            }
+
+            self::listenForNewMountProviders($mountConfigManager, $userManager);
+        } else {
+            self::getMountManager()->addMount(new MountPoint(
+                new NullStorage([]),
+                '/' . $user
+            ));
+            self::getMountManager()->addMount(new MountPoint(
+                new NullStorage([]),
+                '/' . $user . '/files'
+            ));
+        }
+        \OC_Hook::emit('OC_Filesystem', 'post_initMountPoints', array('user' => $user));
+    }
+
+    /**
+     * Get mounts from mount providers that are registered after setup
+     *
+     * @param MountProviderCollection $mountConfigManager
+     * @param IUserManager $userManager
+     */
+    private static function listenForNewMountProviders(MountProviderCollection $mountConfigManager, IUserManager $userManager) {
+        if (!self::$listeningForProviders) {
+            self::$listeningForProviders = true;
+            $mountConfigManager->listen('\OC\Files\Config', 'registerMountProvider', function (IMountProvider $provider) use ($userManager) {
+                foreach (Filesystem::$usersSetup as $user => $setup) {
+                    $userObject = $userManager->get($user);
+                    if ($userObject) {
+                        $mounts = $provider->getMountsForUser($userObject, Filesystem::getLoader());
+                        array_walk($mounts, array(self::$mounts, 'addMount'));
+                    }
+                }
+            });
+        }
+    }
+
+    /**
+     * get the default filesystem view
+     *
+     * @return View
+     */
+    static public function getView() {
+        return self::$defaultInstance;
+    }
+
+    /**
+     * tear down the filesystem, removing all storage providers
+     */
+    static public function tearDown() {
+        self::clearMounts();
+        self::$defaultInstance = null;
+    }
+
+    /**
+     * get the relative path of the root data directory for the current user
+     *
+     * @return string
+     *
+     * Returns path like /admin/files
+     */
+    static public function getRoot() {
+        if (!self::$defaultInstance) {
+            return null;
+        }
+        return self::$defaultInstance->getRoot();
+    }
+
+    /**
+     * clear all mounts and storage backends
+     */
+    public static function clearMounts() {
+        if (self::$mounts) {
+            self::$usersSetup = array();
+            self::$mounts->clear();
+        }
+    }
+
+    /**
+     * mount an \OC\Files\Storage\Storage in our virtual filesystem
+     *
+     * @param \OC\Files\Storage\Storage|string $class
+     * @param array $arguments
+     * @param string $mountpoint
+     */
+    static public function mount($class, $arguments, $mountpoint) {
+        if (!self::$mounts) {
+            \OC_Util::setupFS();
+        }
+        $mount = new Mount\MountPoint($class, $mountpoint, $arguments, self::getLoader());
+        self::$mounts->addMount($mount);
+    }
+
+    /**
+     * return the path to a local version of the file
+     * we need this because we can't know if a file is stored local or not from
+     * outside the filestorage and for some purposes a local file is needed
+     *
+     * @param string $path
+     * @return string
+     */
+    static public function getLocalFile($path) {
+        return self::$defaultInstance->getLocalFile($path);
+    }
+
+    /**
+     * @param string $path
+     * @return string
+     */
+    static public function getLocalFolder($path) {
+        return self::$defaultInstance->getLocalFolder($path);
+    }
+
+    /**
+     * return path to file which reflects one visible in browser
+     *
+     * @param string $path
+     * @return string
+     */
+    static public function getLocalPath($path) {
+        $datadir = \OC_User::getHome(\OC_User::getUser()) . '/files';
+        $newpath = $path;
+        if (strncmp($newpath, $datadir, strlen($datadir)) == 0) {
+            $newpath = substr($path, strlen($datadir));
+        }
+        return $newpath;
+    }
+
+    /**
+     * check if the requested path is valid
+     *
+     * @param string $path
+     * @return bool
+     */
+    static public function isValidPath($path) {
+        $path = self::normalizePath($path);
+        if (!$path || $path[0] !== '/') {
+            $path = '/' . $path;
+        }
+        if (strpos($path, '/../') !== false || strrchr($path, '/') === '/..') {
+            return false;
+        }
+        return true;
+    }
+
+    /**
+     * checks if a file is blacklisted for storage in the filesystem
+     * Listens to write and rename hooks
+     *
+     * @param array $data from hook
+     */
+    static public function isBlacklisted($data) {
+        if (isset($data['path'])) {
+            $path = $data['path'];
+        } else if (isset($data['newpath'])) {
+            $path = $data['newpath'];
+        }
+        if (isset($path)) {
+            if (self::isFileBlacklisted($path)) {
+                $data['run'] = false;
+            }
+        }
+    }
+
+    /**
+     * @param string $filename
+     * @return bool
+     */
+    static public function isFileBlacklisted($filename) {
+        $filename = self::normalizePath($filename);
+
+        $blacklist = \OC::$server->getConfig()->getSystemValue('blacklisted_files', array('.htaccess'));
+        $filename = strtolower(basename($filename));
+        return in_array($filename, $blacklist);
+    }
+
+    /**
+     * check if the directory should be ignored when scanning
+     * NOTE: the special directories . and .. would cause never ending recursion
+     *
+     * @param String $dir
+     * @return boolean
+     */
+    static public function isIgnoredDir($dir) {
+        if ($dir === '.' || $dir === '..') {
+            return true;
+        }
+        return false;
+    }
+
+    /**
+     * following functions are equivalent to their php builtin equivalents for arguments/return values.
+     */
+    static public function mkdir($path) {
+        return self::$defaultInstance->mkdir($path);
+    }
+
+    static public function rmdir($path) {
+        return self::$defaultInstance->rmdir($path);
+    }
+
+    static public function opendir($path) {
+        return self::$defaultInstance->opendir($path);
+    }
+
+    static public function readdir($path) {
+        return self::$defaultInstance->readdir($path);
+    }
+
+    static public function is_dir($path) {
+        return self::$defaultInstance->is_dir($path);
+    }
+
+    static public function is_file($path) {
+        return self::$defaultInstance->is_file($path);
+    }
+
+    static public function stat($path) {
+        return self::$defaultInstance->stat($path);
+    }
+
+    static public function filetype($path) {
+        return self::$defaultInstance->filetype($path);
+    }
+
+    static public function filesize($path) {
+        return self::$defaultInstance->filesize($path);
+    }
+
+    static public function readfile($path) {
+        return self::$defaultInstance->readfile($path);
+    }
+
+    static public function isCreatable($path) {
+        return self::$defaultInstance->isCreatable($path);
+    }
+
+    static public function isReadable($path) {
+        return self::$defaultInstance->isReadable($path);
+    }
+
+    static public function isUpdatable($path) {
+        return self::$defaultInstance->isUpdatable($path);
+    }
+
+    static public function isDeletable($path) {
+        return self::$defaultInstance->isDeletable($path);
+    }
+
+    static public function isSharable($path) {
+        return self::$defaultInstance->isSharable($path);
+    }
+
+    static public function file_exists($path) {
+        return self::$defaultInstance->file_exists($path);
+    }
+
+    static public function filemtime($path) {
+        return self::$defaultInstance->filemtime($path);
+    }
+
+    static public function touch($path, $mtime = null) {
+        return self::$defaultInstance->touch($path, $mtime);
+    }
+
+    /**
+     * @return string
+     */
+    static public function file_get_contents($path) {
+        return self::$defaultInstance->file_get_contents($path);
+    }
+
+    static public function file_put_contents($path, $data) {
+        return self::$defaultInstance->file_put_contents($path, $data);
+    }
+
+    static public function unlink($path) {
+        return self::$defaultInstance->unlink($path);
+    }
+
+    static public function rename($path1, $path2) {
+        return self::$defaultInstance->rename($path1, $path2);
+    }
+
+    static public function copy($path1, $path2) {
+        return self::$defaultInstance->copy($path1, $path2);
+    }
+
+    static public function fopen($path, $mode) {
+        return self::$defaultInstance->fopen($path, $mode);
+    }
+
+    /**
+     * @return string
+     */
+    static public function toTmpFile($path) {
+        return self::$defaultInstance->toTmpFile($path);
+    }
+
+    static public function fromTmpFile($tmpFile, $path) {
+        return self::$defaultInstance->fromTmpFile($tmpFile, $path);
+    }
+
+    static public function getMimeType($path) {
+        return self::$defaultInstance->getMimeType($path);
+    }
+
+    static public function hash($type, $path, $raw = false) {
+        return self::$defaultInstance->hash($type, $path, $raw);
+    }
+
+    static public function free_space($path = '/') {
+        return self::$defaultInstance->free_space($path);
+    }
+
+    static public function search($query) {
+        return self::$defaultInstance->search($query);
+    }
+
+    /**
+     * @param string $query
+     */
+    static public function searchByMime($query) {
+        return self::$defaultInstance->searchByMime($query);
+    }
+
+    /**
+     * @param string|int $tag name or tag id
+     * @param string $userId owner of the tags
+     * @return FileInfo[] array or file info
+     */
+    static public function searchByTag($tag, $userId) {
+        return self::$defaultInstance->searchByTag($tag, $userId);
+    }
+
+    /**
+     * check if a file or folder has been updated since $time
+     *
+     * @param string $path
+     * @param int $time
+     * @return bool
+     */
+    static public function hasUpdated($path, $time) {
+        return self::$defaultInstance->hasUpdated($path, $time);
+    }
+
+    /**
+     * Fix common problems with a file path
+     *
+     * @param string $path
+     * @param bool $stripTrailingSlash whether to strip the trailing slash
+     * @param bool $isAbsolutePath whether the given path is absolute
+     * @param bool $keepUnicode true to disable unicode normalization
+     * @return string
+     */
+    public static function normalizePath($path, $stripTrailingSlash = true, $isAbsolutePath = false, $keepUnicode = false) {
+        if (is_null(self::$normalizedPathCache)) {
+            self::$normalizedPathCache = new CappedMemoryCache();
+        }
+
+        /**
+         * FIXME: This is a workaround for existing classes and files which call
+         *        this function with another type than a valid string. This
+         *        conversion should get removed as soon as all existing
+         *        function calls have been fixed.
+         */
+        $path = (string)$path;
+
+        $cacheKey = json_encode([$path, $stripTrailingSlash, $isAbsolutePath, $keepUnicode]);
+
+        if (isset(self::$normalizedPathCache[$cacheKey])) {
+            return self::$normalizedPathCache[$cacheKey];
+        }
+
+        if ($path == '') {
+            return '/';
+        }
+
+        //normalize unicode if possible
+        if (!$keepUnicode) {
+            $path = \OC_Util::normalizeUnicode($path);
+        }
+
+        //no windows style slashes
+        $path = str_replace('\\', '/', $path);
+
+        //add leading slash
+        if ($path[0] !== '/') {
+            $path = '/' . $path;
+        }
+
+        // remove '/./'
+        // ugly, but str_replace() can't replace them all in one go
+        // as the replacement itself is part of the search string
+        // which will only be found during the next iteration
+        while (strpos($path, '/./') !== false) {
+            $path = str_replace('/./', '/', $path);
+        }
+        // remove sequences of slashes
+        $path = preg_replace('#/{2,}#', '/', $path);
+
+        //remove trailing slash
+        if ($stripTrailingSlash and strlen($path) > 1 and substr($path, -1, 1) === '/') {
+            $path = substr($path, 0, -1);
+        }
+
+        // remove trailing '/.'
+        if (substr($path, -2) == '/.') {
+            $path = substr($path, 0, -2);
+        }
+
+        $normalizedPath = $path;
+        self::$normalizedPathCache[$cacheKey] = $normalizedPath;
+
+        return $normalizedPath;
+    }
+
+    /**
+     * get the filesystem info
+     *
+     * @param string $path
+     * @param boolean $includeMountPoints whether to add mountpoint sizes,
+     * defaults to true
+     * @return \OC\Files\FileInfo|bool False if file does not exist
+     */
+    public static function getFileInfo($path, $includeMountPoints = true) {
+        return self::$defaultInstance->getFileInfo($path, $includeMountPoints);
+    }
+
+    /**
+     * change file metadata
+     *
+     * @param string $path
+     * @param array $data
+     * @return int
+     *
+     * returns the fileid of the updated file
+     */
+    public static function putFileInfo($path, $data) {
+        return self::$defaultInstance->putFileInfo($path, $data);
+    }
+
+    /**
+     * get the content of a directory
+     *
+     * @param string $directory path under datadirectory
+     * @param string $mimetype_filter limit returned content to this mimetype or mimepart
+     * @return \OC\Files\FileInfo[]
+     */
+    public static function getDirectoryContent($directory, $mimetype_filter = '') {
+        return self::$defaultInstance->getDirectoryContent($directory, $mimetype_filter);
+    }
+
+    /**
+     * Get the path of a file by id
+     *
+     * Note that the resulting path is not guaranteed to be unique for the id, multiple paths can point to the same file
+     *
+     * @param int $id
+     * @throws NotFoundException
+     * @return string
+     */
+    public static function getPath($id) {
+        return self::$defaultInstance->getPath($id);
+    }
+
+    /**
+     * Get the owner for a file or folder
+     *
+     * @param string $path
+     * @return string
+     */
+    public static function getOwner($path) {
+        return self::$defaultInstance->getOwner($path);
+    }
+
+    /**
+     * get the ETag for a file or folder
+     *
+     * @param string $path
+     * @return string
+     */
+    static public function getETag($path) {
+        return self::$defaultInstance->getETag($path);
+    }
 }

Spacing +10 added lines, -10 removed lines

@@ -409,17 +409,17 @@ 
 		$userObject = $userManager->get($user);
 
 		if (is_null($userObject)) {
-			\OCP\Util::writeLog('files', ' Backends provided no user object for ' . $user, \OCP\Util::ERROR);
+			\OCP\Util::writeLog('files', ' Backends provided no user object for '.$user, \OCP\Util::ERROR);
 			// reset flag, this will make it possible to rethrow the exception if called again
 			unset(self::$usersSetup[$user]);
-			throw new \OC\User\NoUserException('Backends provided no user object for ' . $user);
+			throw new \OC\User\NoUserException('Backends provided no user object for '.$user);
 		}
 
 		$realUid = $userObject->getUID();
 		// workaround in case of different casings
 		if ($user !== $realUid) {
 			$stack = json_encode(debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, 50));
-			\OCP\Util::writeLog('files', 'initMountPoints() called with wrong user casing. This could be a bug. Expected: "' . $realUid . '" got "' . $user . '". Stack: ' . $stack, \OCP\Util::WARN);
+			\OCP\Util::writeLog('files', 'initMountPoints() called with wrong user casing. This could be a bug. Expected: "'.$realUid.'" got "'.$user.'". Stack: '.$stack, \OCP\Util::WARN);
 			$user = $realUid;
 
 			// again with the correct casing
@@ -453,11 +453,11 @@ 
 		} else {
 			self::getMountManager()->addMount(new MountPoint(
 				new NullStorage([]),
-				'/' . $user
+				'/'.$user
 			));
 			self::getMountManager()->addMount(new MountPoint(
 				new NullStorage([]),
-				'/' . $user . '/files'
+				'/'.$user.'/files'
 			));
 		}
 		\OC_Hook::emit('OC_Filesystem', 'post_initMountPoints', array('user' => $user));
@@ -472,7 +472,7 @@ 
 	private static function listenForNewMountProviders(MountProviderCollection $mountConfigManager, IUserManager $userManager) {
 		if (!self::$listeningForProviders) {
 			self::$listeningForProviders = true;
-			$mountConfigManager->listen('\OC\Files\Config', 'registerMountProvider', function (IMountProvider $provider) use ($userManager) {
+			$mountConfigManager->listen('\OC\Files\Config', 'registerMountProvider', function(IMountProvider $provider) use ($userManager) {
 				foreach (Filesystem::$usersSetup as $user => $setup) {
 					$userObject = $userManager->get($user);
 					if ($userObject) {
@@ -567,7 +567,7 @@ 
 	 * @return string
 	 */
 	static public function getLocalPath($path) {
-		$datadir = \OC_User::getHome(\OC_User::getUser()) . '/files';
+		$datadir = \OC_User::getHome(\OC_User::getUser()).'/files';
 		$newpath = $path;
 		if (strncmp($newpath, $datadir, strlen($datadir)) == 0) {
 			$newpath = substr($path, strlen($datadir));
@@ -584,7 +584,7 @@ 
 	static public function isValidPath($path) {
 		$path = self::normalizePath($path);
 		if (!$path || $path[0] !== '/') {
-			$path = '/' . $path;
+			$path = '/'.$path;
 		}
 		if (strpos($path, '/../') !== false || strrchr($path, '/') === '/..') {
 			return false;
@@ -813,7 +813,7 @@ 
 		 *        conversion should get removed as soon as all existing
 		 *        function calls have been fixed.
 		 */
-		$path = (string)$path;
+		$path = (string) $path;
 
 		$cacheKey = json_encode([$path, $stripTrailingSlash, $isAbsolutePath, $keepUnicode]);
 
@@ -835,7 +835,7 @@ 
 
 		//add leading slash
 		if ($path[0] !== '/') {
-			$path = '/' . $path;
+			$path = '/'.$path;
 		}
 
 		// remove '/./'

lib/private/Files/Storage/Wrapper/Encryption.php

Doc Comments +2 added lines, -2 removed lines

@@ -984,7 +984,7 @@ 
 	/**
 	 * check if path points to a files version
 	 *
-	 * @param $path
+	 * @param string $path
 	 * @return bool
 	 */
 	protected function isVersion($path) {
@@ -995,7 +995,7 @@ 
 	/**
 	 * check if the given storage should be encrypted or not
 	 *
-	 * @param $path
+	 * @param string $path
 	 * @return bool
 	 */
 	protected function shouldEncrypt($path) {

Indentation +972 added lines, -972 removed lines

@@ -46,977 +46,977 @@
 
 class Encryption extends Wrapper {
 
-	use LocalTempFileTrait;
-
-	/** @var string */
-	private $mountPoint;
-
-	/** @var \OC\Encryption\Util */
-	private $util;
-
-	/** @var \OCP\Encryption\IManager */
-	private $encryptionManager;
-
-	/** @var \OCP\ILogger */
-	private $logger;
-
-	/** @var string */
-	private $uid;
-
-	/** @var array */
-	protected $unencryptedSize;
-
-	/** @var \OCP\Encryption\IFile */
-	private $fileHelper;
-
-	/** @var IMountPoint */
-	private $mount;
-
-	/** @var IStorage */
-	private $keyStorage;
-
-	/** @var Update */
-	private $update;
-
-	/** @var Manager */
-	private $mountManager;
-
-	/** @var array remember for which path we execute the repair step to avoid recursions */
-	private $fixUnencryptedSizeOf = array();
-
-	/** @var  ArrayCache */
-	private $arrayCache;
-
-	/**
-	 * @param array $parameters
-	 * @param IManager $encryptionManager
-	 * @param Util $util
-	 * @param ILogger $logger
-	 * @param IFile $fileHelper
-	 * @param string $uid
-	 * @param IStorage $keyStorage
-	 * @param Update $update
-	 * @param Manager $mountManager
-	 * @param ArrayCache $arrayCache
-	 */
-	public function __construct(
-			$parameters,
-			IManager $encryptionManager = null,
-			Util $util = null,
-			ILogger $logger = null,
-			IFile $fileHelper = null,
-			$uid = null,
-			IStorage $keyStorage = null,
-			Update $update = null,
-			Manager $mountManager = null,
-			ArrayCache $arrayCache = null
-		) {
-
-		$this->mountPoint = $parameters['mountPoint'];
-		$this->mount = $parameters['mount'];
-		$this->encryptionManager = $encryptionManager;
-		$this->util = $util;
-		$this->logger = $logger;
-		$this->uid = $uid;
-		$this->fileHelper = $fileHelper;
-		$this->keyStorage = $keyStorage;
-		$this->unencryptedSize = array();
-		$this->update = $update;
-		$this->mountManager = $mountManager;
-		$this->arrayCache = $arrayCache;
-		parent::__construct($parameters);
-	}
-
-	/**
-	 * see http://php.net/manual/en/function.filesize.php
-	 * The result for filesize when called on a folder is required to be 0
-	 *
-	 * @param string $path
-	 * @return int
-	 */
-	public function filesize($path) {
-		$fullPath = $this->getFullPath($path);
-
-		/** @var CacheEntry $info */
-		$info = $this->getCache()->get($path);
-		if (isset($this->unencryptedSize[$fullPath])) {
-			$size = $this->unencryptedSize[$fullPath];
-			// update file cache
-			if ($info instanceof ICacheEntry) {
-				$info = $info->getData();
-				$info['encrypted'] = $info['encryptedVersion'];
-			} else {
-				if (!is_array($info)) {
-					$info = [];
-				}
-				$info['encrypted'] = true;
-			}
-
-			$info['size'] = $size;
-			$this->getCache()->put($path, $info);
-
-			return $size;
-		}
-
-		if (isset($info['fileid']) && $info['encrypted']) {
-			return $this->verifyUnencryptedSize($path, $info['size']);
-		}
-
-		return $this->storage->filesize($path);
-	}
-
-	/**
-	 * @param string $path
-	 * @return array
-	 */
-	public function getMetaData($path) {
-		$data = $this->storage->getMetaData($path);
-		if (is_null($data)) {
-			return null;
-		}
-		$fullPath = $this->getFullPath($path);
-		$info = $this->getCache()->get($path);
-
-		if (isset($this->unencryptedSize[$fullPath])) {
-			$data['encrypted'] = true;
-			$data['size'] = $this->unencryptedSize[$fullPath];
-		} else {
-			if (isset($info['fileid']) && $info['encrypted']) {
-				$data['size'] = $this->verifyUnencryptedSize($path, $info['size']);
-				$data['encrypted'] = true;
-			}
-		}
-
-		if (isset($info['encryptedVersion']) && $info['encryptedVersion'] > 1) {
-			$data['encryptedVersion'] = $info['encryptedVersion'];
-		}
-
-		return $data;
-	}
-
-	/**
-	 * see http://php.net/manual/en/function.file_get_contents.php
-	 *
-	 * @param string $path
-	 * @return string
-	 */
-	public function file_get_contents($path) {
-
-		$encryptionModule = $this->getEncryptionModule($path);
-
-		if ($encryptionModule) {
-			$handle = $this->fopen($path, "r");
-			if (!$handle) {
-				return false;
-			}
-			$data = stream_get_contents($handle);
-			fclose($handle);
-			return $data;
-		}
-		return $this->storage->file_get_contents($path);
-	}
-
-	/**
-	 * see http://php.net/manual/en/function.file_put_contents.php
-	 *
-	 * @param string $path
-	 * @param string $data
-	 * @return bool
-	 */
-	public function file_put_contents($path, $data) {
-		// file put content will always be translated to a stream write
-		$handle = $this->fopen($path, 'w');
-		if (is_resource($handle)) {
-			$written = fwrite($handle, $data);
-			fclose($handle);
-			return $written;
-		}
-
-		return false;
-	}
-
-	/**
-	 * see http://php.net/manual/en/function.unlink.php
-	 *
-	 * @param string $path
-	 * @return bool
-	 */
-	public function unlink($path) {
-		$fullPath = $this->getFullPath($path);
-		if ($this->util->isExcluded($fullPath)) {
-			return $this->storage->unlink($path);
-		}
-
-		$encryptionModule = $this->getEncryptionModule($path);
-		if ($encryptionModule) {
-			$this->keyStorage->deleteAllFileKeys($this->getFullPath($path));
-		}
-
-		return $this->storage->unlink($path);
-	}
-
-	/**
-	 * see http://php.net/manual/en/function.rename.php
-	 *
-	 * @param string $path1
-	 * @param string $path2
-	 * @return bool
-	 */
-	public function rename($path1, $path2) {
-
-		$result = $this->storage->rename($path1, $path2);
-
-		if ($result &&
-			// versions always use the keys from the original file, so we can skip
-			// this step for versions
-			$this->isVersion($path2) === false &&
-			$this->encryptionManager->isEnabled()) {
-			$source = $this->getFullPath($path1);
-			if (!$this->util->isExcluded($source)) {
-				$target = $this->getFullPath($path2);
-				if (isset($this->unencryptedSize[$source])) {
-					$this->unencryptedSize[$target] = $this->unencryptedSize[$source];
-				}
-				$this->keyStorage->renameKeys($source, $target);
-				$module = $this->getEncryptionModule($path2);
-				if ($module) {
-					$module->update($target, $this->uid, []);
-				}
-			}
-		}
-
-		return $result;
-	}
-
-	/**
-	 * see http://php.net/manual/en/function.rmdir.php
-	 *
-	 * @param string $path
-	 * @return bool
-	 */
-	public function rmdir($path) {
-		$result = $this->storage->rmdir($path);
-		$fullPath = $this->getFullPath($path);
-		if ($result &&
-			$this->util->isExcluded($fullPath) === false &&
-			$this->encryptionManager->isEnabled()
-		) {
-			$this->keyStorage->deleteAllFileKeys($fullPath);
-		}
-
-		return $result;
-	}
-
-	/**
-	 * check if a file can be read
-	 *
-	 * @param string $path
-	 * @return bool
-	 */
-	public function isReadable($path) {
-
-		$isReadable = true;
-
-		$metaData = $this->getMetaData($path);
-		if (
-			!$this->is_dir($path) &&
-			isset($metaData['encrypted']) &&
-			$metaData['encrypted'] === true
-		) {
-			$fullPath = $this->getFullPath($path);
-			$module = $this->getEncryptionModule($path);
-			$isReadable = $module->isReadable($fullPath, $this->uid);
-		}
-
-		return $this->storage->isReadable($path) && $isReadable;
-	}
-
-	/**
-	 * see http://php.net/manual/en/function.copy.php
-	 *
-	 * @param string $path1
-	 * @param string $path2
-	 * @return bool
-	 */
-	public function copy($path1, $path2) {
-
-		$source = $this->getFullPath($path1);
-
-		if ($this->util->isExcluded($source)) {
-			return $this->storage->copy($path1, $path2);
-		}
-
-		// need to stream copy file by file in case we copy between a encrypted
-		// and a unencrypted storage
-		$this->unlink($path2);
-		$result = $this->copyFromStorage($this, $path1, $path2);
-
-		return $result;
-	}
-
-	/**
-	 * see http://php.net/manual/en/function.fopen.php
-	 *
-	 * @param string $path
-	 * @param string $mode
-	 * @return resource|bool
-	 * @throws GenericEncryptionException
-	 * @throws ModuleDoesNotExistsException
-	 */
-	public function fopen($path, $mode) {
-
-		// check if the file is stored in the array cache, this means that we
-		// copy a file over to the versions folder, in this case we don't want to
-		// decrypt it
-		if ($this->arrayCache->hasKey('encryption_copy_version_' . $path)) {
-			$this->arrayCache->remove('encryption_copy_version_' . $path);
-			return $this->storage->fopen($path, $mode);
-		}
-
-		$encryptionEnabled = $this->encryptionManager->isEnabled();
-		$shouldEncrypt = false;
-		$encryptionModule = null;
-		$header = $this->getHeader($path);
-		$signed = (isset($header['signed']) && $header['signed'] === 'true') ? true : false;
-		$fullPath = $this->getFullPath($path);
-		$encryptionModuleId = $this->util->getEncryptionModuleId($header);
-
-		if ($this->util->isExcluded($fullPath) === false) {
-
-			$size = $unencryptedSize = 0;
-			$realFile = $this->util->stripPartialFileExtension($path);
-			$targetExists = $this->file_exists($realFile) || $this->file_exists($path);
-			$targetIsEncrypted = false;
-			if ($targetExists) {
-				// in case the file exists we require the explicit module as
-				// specified in the file header - otherwise we need to fail hard to
-				// prevent data loss on client side
-				if (!empty($encryptionModuleId)) {
-					$targetIsEncrypted = true;
-					$encryptionModule = $this->encryptionManager->getEncryptionModule($encryptionModuleId);
-				}
-
-				if ($this->file_exists($path)) {
-					$size = $this->storage->filesize($path);
-					$unencryptedSize = $this->filesize($path);
-				} else {
-					$size = $unencryptedSize = 0;
-				}
-			}
-
-			try {
-
-				if (
-					$mode === 'w'
-					|| $mode === 'w+'
-					|| $mode === 'wb'
-					|| $mode === 'wb+'
-				) {
-					// don't overwrite encrypted files if encryption is not enabled
-					if ($targetIsEncrypted && $encryptionEnabled === false) {
-						throw new GenericEncryptionException('Tried to access encrypted file but encryption is not enabled');
-					}
-					if ($encryptionEnabled) {
-						// if $encryptionModuleId is empty, the default module will be used
-						$encryptionModule = $this->encryptionManager->getEncryptionModule($encryptionModuleId);
-						$shouldEncrypt = $encryptionModule->shouldEncrypt($fullPath);
-						$signed = true;
-					}
-				} else {
-					$info = $this->getCache()->get($path);
-					// only get encryption module if we found one in the header
-					// or if file should be encrypted according to the file cache
-					if (!empty($encryptionModuleId)) {
-						$encryptionModule = $this->encryptionManager->getEncryptionModule($encryptionModuleId);
-						$shouldEncrypt = true;
-					} else if (empty($encryptionModuleId) && $info['encrypted'] === true) {
-						// we come from a old installation. No header and/or no module defined
-						// but the file is encrypted. In this case we need to use the
-						// OC_DEFAULT_MODULE to read the file
-						$encryptionModule = $this->encryptionManager->getEncryptionModule('OC_DEFAULT_MODULE');
-						$shouldEncrypt = true;
-						$targetIsEncrypted = true;
-					}
-				}
-			} catch (ModuleDoesNotExistsException $e) {
-				$this->logger->warning('Encryption module "' . $encryptionModuleId .
-					'" not found, file will be stored unencrypted (' . $e->getMessage() . ')');
-			}
-
-			// encryption disabled on write of new file and write to existing unencrypted file -> don't encrypt
-			if (!$encryptionEnabled || !$this->shouldEncrypt($path)) {
-				if (!$targetExists || !$targetIsEncrypted) {
-					$shouldEncrypt = false;
-				}
-			}
-
-			if ($shouldEncrypt === true && $encryptionModule !== null) {
-				$headerSize = $this->getHeaderSize($path);
-				$source = $this->storage->fopen($path, $mode);
-				if (!is_resource($source)) {
-					return false;
-				}
-				$handle = \OC\Files\Stream\Encryption::wrap($source, $path, $fullPath, $header,
-					$this->uid, $encryptionModule, $this->storage, $this, $this->util, $this->fileHelper, $mode,
-					$size, $unencryptedSize, $headerSize, $signed);
-				return $handle;
-			}
-
-		}
-
-		return $this->storage->fopen($path, $mode);
-	}
-
-
-	/**
-	 * perform some plausibility checks if the the unencrypted size is correct.
-	 * If not, we calculate the correct unencrypted size and return it
-	 *
-	 * @param string $path internal path relative to the storage root
-	 * @param int $unencryptedSize size of the unencrypted file
-	 *
-	 * @return int unencrypted size
-	 */
-	protected function verifyUnencryptedSize($path, $unencryptedSize) {
-
-		$size = $this->storage->filesize($path);
-		$result = $unencryptedSize;
-
-		if ($unencryptedSize < 0 ||
-			($size > 0 && $unencryptedSize === $size)
-		) {
-			// check if we already calculate the unencrypted size for the
-			// given path to avoid recursions
-			if (isset($this->fixUnencryptedSizeOf[$this->getFullPath($path)]) === false) {
-				$this->fixUnencryptedSizeOf[$this->getFullPath($path)] = true;
-				try {
-					$result = $this->fixUnencryptedSize($path, $size, $unencryptedSize);
-				} catch (\Exception $e) {
-					$this->logger->error('Couldn\'t re-calculate unencrypted size for '. $path);
-					$this->logger->logException($e);
-				}
-				unset($this->fixUnencryptedSizeOf[$this->getFullPath($path)]);
-			}
-		}
-
-		return $result;
-	}
-
-	/**
-	 * calculate the unencrypted size
-	 *
-	 * @param string $path internal path relative to the storage root
-	 * @param int $size size of the physical file
-	 * @param int $unencryptedSize size of the unencrypted file
-	 *
-	 * @return int calculated unencrypted size
-	 */
-	protected function fixUnencryptedSize($path, $size, $unencryptedSize) {
-
-		$headerSize = $this->getHeaderSize($path);
-		$header = $this->getHeader($path);
-		$encryptionModule = $this->getEncryptionModule($path);
-
-		$stream = $this->storage->fopen($path, 'r');
-
-		// if we couldn't open the file we return the old unencrypted size
-		if (!is_resource($stream)) {
-			$this->logger->error('Could not open ' . $path . '. Recalculation of unencrypted size aborted.');
-			return $unencryptedSize;
-		}
-
-		$newUnencryptedSize = 0;
-		$size -= $headerSize;
-		$blockSize = $this->util->getBlockSize();
-
-		// if a header exists we skip it
-		if ($headerSize > 0) {
-			fread($stream, $headerSize);
-		}
-
-		// fast path, else the calculation for $lastChunkNr is bogus
-		if ($size === 0) {
-			return 0;
-		}
-
-		$signed = (isset($header['signed']) && $header['signed'] === 'true') ? true : false;
-		$unencryptedBlockSize = $encryptionModule->getUnencryptedBlockSize($signed);
-
-		// calculate last chunk nr
-		// next highest is end of chunks, one subtracted is last one
-		// we have to read the last chunk, we can't just calculate it (because of padding etc)
-
-		$lastChunkNr = ceil($size/ $blockSize)-1;
-		// calculate last chunk position
-		$lastChunkPos = ($lastChunkNr * $blockSize);
-		// try to fseek to the last chunk, if it fails we have to read the whole file
-		if (@fseek($stream, $lastChunkPos, SEEK_CUR) === 0) {
-			$newUnencryptedSize += $lastChunkNr * $unencryptedBlockSize;
-		}
-
-		$lastChunkContentEncrypted='';
-		$count = $blockSize;
-
-		while ($count > 0) {
-			$data=fread($stream, $blockSize);
-			$count=strlen($data);
-			$lastChunkContentEncrypted .= $data;
-			if(strlen($lastChunkContentEncrypted) > $blockSize) {
-				$newUnencryptedSize += $unencryptedBlockSize;
-				$lastChunkContentEncrypted=substr($lastChunkContentEncrypted, $blockSize);
-			}
-		}
-
-		fclose($stream);
-
-		// we have to decrypt the last chunk to get it actual size
-		$encryptionModule->begin($this->getFullPath($path), $this->uid, 'r', $header, []);
-		$decryptedLastChunk = $encryptionModule->decrypt($lastChunkContentEncrypted, $lastChunkNr . 'end');
-		$decryptedLastChunk .= $encryptionModule->end($this->getFullPath($path), $lastChunkNr . 'end');
-
-		// calc the real file size with the size of the last chunk
-		$newUnencryptedSize += strlen($decryptedLastChunk);
-
-		$this->updateUnencryptedSize($this->getFullPath($path), $newUnencryptedSize);
-
-		// write to cache if applicable
-		$cache = $this->storage->getCache();
-		if ($cache) {
-			$entry = $cache->get($path);
-			$cache->update($entry['fileid'], ['size' => $newUnencryptedSize]);
-		}
-
-		return $newUnencryptedSize;
-	}
-
-	/**
-	 * @param Storage $sourceStorage
-	 * @param string $sourceInternalPath
-	 * @param string $targetInternalPath
-	 * @param bool $preserveMtime
-	 * @return bool
-	 */
-	public function moveFromStorage(Storage $sourceStorage, $sourceInternalPath, $targetInternalPath, $preserveMtime = true) {
-		if ($sourceStorage === $this) {
-			return $this->rename($sourceInternalPath, $targetInternalPath);
-		}
-
-		// TODO clean this up once the underlying moveFromStorage in OC\Files\Storage\Wrapper\Common is fixed:
-		// - call $this->storage->moveFromStorage() instead of $this->copyBetweenStorage
-		// - copy the file cache update from  $this->copyBetweenStorage to this method
-		// - copy the copyKeys() call from  $this->copyBetweenStorage to this method
-		// - remove $this->copyBetweenStorage
-
-		if (!$sourceStorage->isDeletable($sourceInternalPath)) {
-			return false;
-		}
-
-		$result = $this->copyBetweenStorage($sourceStorage, $sourceInternalPath, $targetInternalPath, $preserveMtime, true);
-		if ($result) {
-			if ($sourceStorage->is_dir($sourceInternalPath)) {
-				$result &= $sourceStorage->rmdir($sourceInternalPath);
-			} else {
-				$result &= $sourceStorage->unlink($sourceInternalPath);
-			}
-		}
-		return $result;
-	}
-
-
-	/**
-	 * @param Storage $sourceStorage
-	 * @param string $sourceInternalPath
-	 * @param string $targetInternalPath
-	 * @param bool $preserveMtime
-	 * @param bool $isRename
-	 * @return bool
-	 */
-	public function copyFromStorage(Storage $sourceStorage, $sourceInternalPath, $targetInternalPath, $preserveMtime = false, $isRename = false) {
-
-		// TODO clean this up once the underlying moveFromStorage in OC\Files\Storage\Wrapper\Common is fixed:
-		// - call $this->storage->copyFromStorage() instead of $this->copyBetweenStorage
-		// - copy the file cache update from  $this->copyBetweenStorage to this method
-		// - copy the copyKeys() call from  $this->copyBetweenStorage to this method
-		// - remove $this->copyBetweenStorage
-
-		return $this->copyBetweenStorage($sourceStorage, $sourceInternalPath, $targetInternalPath, $preserveMtime, $isRename);
-	}
-
-	/**
-	 * Update the encrypted cache version in the database
-	 *
-	 * @param Storage $sourceStorage
-	 * @param string $sourceInternalPath
-	 * @param string $targetInternalPath
-	 * @param bool $isRename
-	 */
-	private function updateEncryptedVersion(Storage $sourceStorage, $sourceInternalPath, $targetInternalPath, $isRename) {
-		$isEncrypted = $this->encryptionManager->isEnabled() && $this->shouldEncrypt($targetInternalPath) ? 1 : 0;
-		$cacheInformation = [
-			'encrypted' => (bool)$isEncrypted,
-		];
-		if($isEncrypted === 1) {
-			$encryptedVersion = $sourceStorage->getCache()->get($sourceInternalPath)['encryptedVersion'];
-
-			// In case of a move operation from an unencrypted to an encrypted
-			// storage the old encrypted version would stay with "0" while the
-			// correct value would be "1". Thus we manually set the value to "1"
-			// for those cases.
-			// See also https://github.com/owncloud/core/issues/23078
-			if($encryptedVersion === 0) {
-				$encryptedVersion = 1;
-			}
-
-			$cacheInformation['encryptedVersion'] = $encryptedVersion;
-		}
-
-		// in case of a rename we need to manipulate the source cache because
-		// this information will be kept for the new target
-		if ($isRename) {
-			$sourceStorage->getCache()->put($sourceInternalPath, $cacheInformation);
-		} else {
-			$this->getCache()->put($targetInternalPath, $cacheInformation);
-		}
-	}
-
-	/**
-	 * copy file between two storages
-	 *
-	 * @param Storage $sourceStorage
-	 * @param string $sourceInternalPath
-	 * @param string $targetInternalPath
-	 * @param bool $preserveMtime
-	 * @param bool $isRename
-	 * @return bool
-	 * @throws \Exception
-	 */
-	private function copyBetweenStorage(Storage $sourceStorage, $sourceInternalPath, $targetInternalPath, $preserveMtime, $isRename) {
-
-		// for versions we have nothing to do, because versions should always use the
-		// key from the original file. Just create a 1:1 copy and done
-		if ($this->isVersion($targetInternalPath) ||
-			$this->isVersion($sourceInternalPath)) {
-			// remember that we try to create a version so that we can detect it during
-			// fopen($sourceInternalPath) and by-pass the encryption in order to
-			// create a 1:1 copy of the file
-			$this->arrayCache->set('encryption_copy_version_' . $sourceInternalPath, true);
-			$result = $this->storage->copyFromStorage($sourceStorage, $sourceInternalPath, $targetInternalPath);
-			$this->arrayCache->remove('encryption_copy_version_' . $sourceInternalPath);
-			if ($result) {
-				$info = $this->getCache('', $sourceStorage)->get($sourceInternalPath);
-				// make sure that we update the unencrypted size for the version
-				if (isset($info['encrypted']) && $info['encrypted'] === true) {
-					$this->updateUnencryptedSize(
-						$this->getFullPath($targetInternalPath),
-						$info['size']
-					);
-				}
-				$this->updateEncryptedVersion($sourceStorage, $sourceInternalPath, $targetInternalPath, $isRename);
-			}
-			return $result;
-		}
-
-		// first copy the keys that we reuse the existing file key on the target location
-		// and don't create a new one which would break versions for example.
-		$mount = $this->mountManager->findByStorageId($sourceStorage->getId());
-		if (count($mount) === 1) {
-			$mountPoint = $mount[0]->getMountPoint();
-			$source = $mountPoint . '/' . $sourceInternalPath;
-			$target = $this->getFullPath($targetInternalPath);
-			$this->copyKeys($source, $target);
-		} else {
-			$this->logger->error('Could not find mount point, can\'t keep encryption keys');
-		}
-
-		if ($sourceStorage->is_dir($sourceInternalPath)) {
-			$dh = $sourceStorage->opendir($sourceInternalPath);
-			$result = $this->mkdir($targetInternalPath);
-			if (is_resource($dh)) {
-				while ($result and ($file = readdir($dh)) !== false) {
-					if (!Filesystem::isIgnoredDir($file)) {
-						$result &= $this->copyFromStorage($sourceStorage, $sourceInternalPath . '/' . $file, $targetInternalPath . '/' . $file, false, $isRename);
-					}
-				}
-			}
-		} else {
-			try {
-				$source = $sourceStorage->fopen($sourceInternalPath, 'r');
-				$target = $this->fopen($targetInternalPath, 'w');
-				list(, $result) = \OC_Helper::streamCopy($source, $target);
-				fclose($source);
-				fclose($target);
-			} catch (\Exception $e) {
-				fclose($source);
-				fclose($target);
-				throw $e;
-			}
-			if($result) {
-				if ($preserveMtime) {
-					$this->touch($targetInternalPath, $sourceStorage->filemtime($sourceInternalPath));
-				}
-				$this->updateEncryptedVersion($sourceStorage, $sourceInternalPath, $targetInternalPath, $isRename);
-			} else {
-				// delete partially written target file
-				$this->unlink($targetInternalPath);
-				// delete cache entry that was created by fopen
-				$this->getCache()->remove($targetInternalPath);
-			}
-		}
-		return (bool)$result;
-
-	}
-
-	/**
-	 * get the path to a local version of the file.
-	 * The local version of the file can be temporary and doesn't have to be persistent across requests
-	 *
-	 * @param string $path
-	 * @return string
-	 */
-	public function getLocalFile($path) {
-		if ($this->encryptionManager->isEnabled()) {
-			$cachedFile = $this->getCachedFile($path);
-			if (is_string($cachedFile)) {
-				return $cachedFile;
-			}
-		}
-		return $this->storage->getLocalFile($path);
-	}
-
-	/**
-	 * Returns the wrapped storage's value for isLocal()
-	 *
-	 * @return bool wrapped storage's isLocal() value
-	 */
-	public function isLocal() {
-		if ($this->encryptionManager->isEnabled()) {
-			return false;
-		}
-		return $this->storage->isLocal();
-	}
-
-	/**
-	 * see http://php.net/manual/en/function.stat.php
-	 * only the following keys are required in the result: size and mtime
-	 *
-	 * @param string $path
-	 * @return array
-	 */
-	public function stat($path) {
-		$stat = $this->storage->stat($path);
-		$fileSize = $this->filesize($path);
-		$stat['size'] = $fileSize;
-		$stat[7] = $fileSize;
-		return $stat;
-	}
-
-	/**
-	 * see http://php.net/manual/en/function.hash.php
-	 *
-	 * @param string $type
-	 * @param string $path
-	 * @param bool $raw
-	 * @return string
-	 */
-	public function hash($type, $path, $raw = false) {
-		$fh = $this->fopen($path, 'rb');
-		$ctx = hash_init($type);
-		hash_update_stream($ctx, $fh);
-		fclose($fh);
-		return hash_final($ctx, $raw);
-	}
-
-	/**
-	 * return full path, including mount point
-	 *
-	 * @param string $path relative to mount point
-	 * @return string full path including mount point
-	 */
-	protected function getFullPath($path) {
-		return Filesystem::normalizePath($this->mountPoint . '/' . $path);
-	}
-
-	/**
-	 * read first block of encrypted file, typically this will contain the
-	 * encryption header
-	 *
-	 * @param string $path
-	 * @return string
-	 */
-	protected function readFirstBlock($path) {
-		$firstBlock = '';
-		if ($this->storage->file_exists($path)) {
-			$handle = $this->storage->fopen($path, 'r');
-			$firstBlock = fread($handle, $this->util->getHeaderSize());
-			fclose($handle);
-		}
-		return $firstBlock;
-	}
-
-	/**
-	 * return header size of given file
-	 *
-	 * @param string $path
-	 * @return int
-	 */
-	protected function getHeaderSize($path) {
-		$headerSize = 0;
-		$realFile = $this->util->stripPartialFileExtension($path);
-		if ($this->storage->file_exists($realFile)) {
-			$path = $realFile;
-		}
-		$firstBlock = $this->readFirstBlock($path);
-
-		if (substr($firstBlock, 0, strlen(Util::HEADER_START)) === Util::HEADER_START) {
-			$headerSize = $this->util->getHeaderSize();
-		}
-
-		return $headerSize;
-	}
-
-	/**
-	 * parse raw header to array
-	 *
-	 * @param string $rawHeader
-	 * @return array
-	 */
-	protected function parseRawHeader($rawHeader) {
-		$result = array();
-		if (substr($rawHeader, 0, strlen(Util::HEADER_START)) === Util::HEADER_START) {
-			$header = $rawHeader;
-			$endAt = strpos($header, Util::HEADER_END);
-			if ($endAt !== false) {
-				$header = substr($header, 0, $endAt + strlen(Util::HEADER_END));
-
-				// +1 to not start with an ':' which would result in empty element at the beginning
-				$exploded = explode(':', substr($header, strlen(Util::HEADER_START)+1));
-
-				$element = array_shift($exploded);
-				while ($element !== Util::HEADER_END) {
-					$result[$element] = array_shift($exploded);
-					$element = array_shift($exploded);
-				}
-			}
-		}
-
-		return $result;
-	}
-
-	/**
-	 * read header from file
-	 *
-	 * @param string $path
-	 * @return array
-	 */
-	protected function getHeader($path) {
-		$realFile = $this->util->stripPartialFileExtension($path);
-		if ($this->storage->file_exists($realFile)) {
-			$path = $realFile;
-		}
-
-		$firstBlock = $this->readFirstBlock($path);
-		$result = $this->parseRawHeader($firstBlock);
-
-		// if the header doesn't contain a encryption module we check if it is a
-		// legacy file. If true, we add the default encryption module
-		if (!isset($result[Util::HEADER_ENCRYPTION_MODULE_KEY])) {
-			if (!empty($result)) {
-				$result[Util::HEADER_ENCRYPTION_MODULE_KEY] = 'OC_DEFAULT_MODULE';
-			} else {
-				// if the header was empty we have to check first if it is a encrypted file at all
-				$info = $this->getCache()->get($path);
-				if (isset($info['encrypted']) && $info['encrypted'] === true) {
-					$result[Util::HEADER_ENCRYPTION_MODULE_KEY] = 'OC_DEFAULT_MODULE';
-				}
-			}
-		}
-
-		return $result;
-	}
-
-	/**
-	 * read encryption module needed to read/write the file located at $path
-	 *
-	 * @param string $path
-	 * @return null|\OCP\Encryption\IEncryptionModule
-	 * @throws ModuleDoesNotExistsException
-	 * @throws \Exception
-	 */
-	protected function getEncryptionModule($path) {
-		$encryptionModule = null;
-		$header = $this->getHeader($path);
-		$encryptionModuleId = $this->util->getEncryptionModuleId($header);
-		if (!empty($encryptionModuleId)) {
-			try {
-				$encryptionModule = $this->encryptionManager->getEncryptionModule($encryptionModuleId);
-			} catch (ModuleDoesNotExistsException $e) {
-				$this->logger->critical('Encryption module defined in "' . $path . '" not loaded!');
-				throw $e;
-			}
-		}
-
-		return $encryptionModule;
-	}
-
-	/**
-	 * @param string $path
-	 * @param int $unencryptedSize
-	 */
-	public function updateUnencryptedSize($path, $unencryptedSize) {
-		$this->unencryptedSize[$path] = $unencryptedSize;
-	}
-
-	/**
-	 * copy keys to new location
-	 *
-	 * @param string $source path relative to data/
-	 * @param string $target path relative to data/
-	 * @return bool
-	 */
-	protected function copyKeys($source, $target) {
-		if (!$this->util->isExcluded($source)) {
-			return $this->keyStorage->copyKeys($source, $target);
-		}
-
-		return false;
-	}
-
-	/**
-	 * check if path points to a files version
-	 *
-	 * @param $path
-	 * @return bool
-	 */
-	protected function isVersion($path) {
-		$normalized = Filesystem::normalizePath($path);
-		return substr($normalized, 0, strlen('/files_versions/')) === '/files_versions/';
-	}
-
-	/**
-	 * check if the given storage should be encrypted or not
-	 *
-	 * @param $path
-	 * @return bool
-	 */
-	protected function shouldEncrypt($path) {
-		$fullPath = $this->getFullPath($path);
-		$mountPointConfig = $this->mount->getOption('encrypt', true);
-		if ($mountPointConfig === false) {
-			return false;
-		}
-
-		try {
-			$encryptionModule = $this->getEncryptionModule($fullPath);
-		} catch (ModuleDoesNotExistsException $e) {
-			return false;
-		}
-
-		if ($encryptionModule === null) {
-			$encryptionModule = $this->encryptionManager->getEncryptionModule();
-		}
-
-		return $encryptionModule->shouldEncrypt($fullPath);
-
-	}
+    use LocalTempFileTrait;
+
+    /** @var string */
+    private $mountPoint;
+
+    /** @var \OC\Encryption\Util */
+    private $util;
+
+    /** @var \OCP\Encryption\IManager */
+    private $encryptionManager;
+
+    /** @var \OCP\ILogger */
+    private $logger;
+
+    /** @var string */
+    private $uid;
+
+    /** @var array */
+    protected $unencryptedSize;
+
+    /** @var \OCP\Encryption\IFile */
+    private $fileHelper;
+
+    /** @var IMountPoint */
+    private $mount;
+
+    /** @var IStorage */
+    private $keyStorage;
+
+    /** @var Update */
+    private $update;
+
+    /** @var Manager */
+    private $mountManager;
+
+    /** @var array remember for which path we execute the repair step to avoid recursions */
+    private $fixUnencryptedSizeOf = array();
+
+    /** @var  ArrayCache */
+    private $arrayCache;
+
+    /**
+     * @param array $parameters
+     * @param IManager $encryptionManager
+     * @param Util $util
+     * @param ILogger $logger
+     * @param IFile $fileHelper
+     * @param string $uid
+     * @param IStorage $keyStorage
+     * @param Update $update
+     * @param Manager $mountManager
+     * @param ArrayCache $arrayCache
+     */
+    public function __construct(
+            $parameters,
+            IManager $encryptionManager = null,
+            Util $util = null,
+            ILogger $logger = null,
+            IFile $fileHelper = null,
+            $uid = null,
+            IStorage $keyStorage = null,
+            Update $update = null,
+            Manager $mountManager = null,
+            ArrayCache $arrayCache = null
+        ) {
+
+        $this->mountPoint = $parameters['mountPoint'];
+        $this->mount = $parameters['mount'];
+        $this->encryptionManager = $encryptionManager;
+        $this->util = $util;
+        $this->logger = $logger;
+        $this->uid = $uid;
+        $this->fileHelper = $fileHelper;
+        $this->keyStorage = $keyStorage;
+        $this->unencryptedSize = array();
+        $this->update = $update;
+        $this->mountManager = $mountManager;
+        $this->arrayCache = $arrayCache;
+        parent::__construct($parameters);
+    }
+
+    /**
+     * see http://php.net/manual/en/function.filesize.php
+     * The result for filesize when called on a folder is required to be 0
+     *
+     * @param string $path
+     * @return int
+     */
+    public function filesize($path) {
+        $fullPath = $this->getFullPath($path);
+
+        /** @var CacheEntry $info */
+        $info = $this->getCache()->get($path);
+        if (isset($this->unencryptedSize[$fullPath])) {
+            $size = $this->unencryptedSize[$fullPath];
+            // update file cache
+            if ($info instanceof ICacheEntry) {
+                $info = $info->getData();
+                $info['encrypted'] = $info['encryptedVersion'];
+            } else {
+                if (!is_array($info)) {
+                    $info = [];
+                }
+                $info['encrypted'] = true;
+            }
+
+            $info['size'] = $size;
+            $this->getCache()->put($path, $info);
+
+            return $size;
+        }
+
+        if (isset($info['fileid']) && $info['encrypted']) {
+            return $this->verifyUnencryptedSize($path, $info['size']);
+        }
+
+        return $this->storage->filesize($path);
+    }
+
+    /**
+     * @param string $path
+     * @return array
+     */
+    public function getMetaData($path) {
+        $data = $this->storage->getMetaData($path);
+        if (is_null($data)) {
+            return null;
+        }
+        $fullPath = $this->getFullPath($path);
+        $info = $this->getCache()->get($path);
+
+        if (isset($this->unencryptedSize[$fullPath])) {
+            $data['encrypted'] = true;
+            $data['size'] = $this->unencryptedSize[$fullPath];
+        } else {
+            if (isset($info['fileid']) && $info['encrypted']) {
+                $data['size'] = $this->verifyUnencryptedSize($path, $info['size']);
+                $data['encrypted'] = true;
+            }
+        }
+
+        if (isset($info['encryptedVersion']) && $info['encryptedVersion'] > 1) {
+            $data['encryptedVersion'] = $info['encryptedVersion'];
+        }
+
+        return $data;
+    }
+
+    /**
+     * see http://php.net/manual/en/function.file_get_contents.php
+     *
+     * @param string $path
+     * @return string
+     */
+    public function file_get_contents($path) {
+
+        $encryptionModule = $this->getEncryptionModule($path);
+
+        if ($encryptionModule) {
+            $handle = $this->fopen($path, "r");
+            if (!$handle) {
+                return false;
+            }
+            $data = stream_get_contents($handle);
+            fclose($handle);
+            return $data;
+        }
+        return $this->storage->file_get_contents($path);
+    }
+
+    /**
+     * see http://php.net/manual/en/function.file_put_contents.php
+     *
+     * @param string $path
+     * @param string $data
+     * @return bool
+     */
+    public function file_put_contents($path, $data) {
+        // file put content will always be translated to a stream write
+        $handle = $this->fopen($path, 'w');
+        if (is_resource($handle)) {
+            $written = fwrite($handle, $data);
+            fclose($handle);
+            return $written;
+        }
+
+        return false;
+    }
+
+    /**
+     * see http://php.net/manual/en/function.unlink.php
+     *
+     * @param string $path
+     * @return bool
+     */
+    public function unlink($path) {
+        $fullPath = $this->getFullPath($path);
+        if ($this->util->isExcluded($fullPath)) {
+            return $this->storage->unlink($path);
+        }
+
+        $encryptionModule = $this->getEncryptionModule($path);
+        if ($encryptionModule) {
+            $this->keyStorage->deleteAllFileKeys($this->getFullPath($path));
+        }
+
+        return $this->storage->unlink($path);
+    }
+
+    /**
+     * see http://php.net/manual/en/function.rename.php
+     *
+     * @param string $path1
+     * @param string $path2
+     * @return bool
+     */
+    public function rename($path1, $path2) {
+
+        $result = $this->storage->rename($path1, $path2);
+
+        if ($result &&
+            // versions always use the keys from the original file, so we can skip
+            // this step for versions
+            $this->isVersion($path2) === false &&
+            $this->encryptionManager->isEnabled()) {
+            $source = $this->getFullPath($path1);
+            if (!$this->util->isExcluded($source)) {
+                $target = $this->getFullPath($path2);
+                if (isset($this->unencryptedSize[$source])) {
+                    $this->unencryptedSize[$target] = $this->unencryptedSize[$source];
+                }
+                $this->keyStorage->renameKeys($source, $target);
+                $module = $this->getEncryptionModule($path2);
+                if ($module) {
+                    $module->update($target, $this->uid, []);
+                }
+            }
+        }
+
+        return $result;
+    }
+
+    /**
+     * see http://php.net/manual/en/function.rmdir.php
+     *
+     * @param string $path
+     * @return bool
+     */
+    public function rmdir($path) {
+        $result = $this->storage->rmdir($path);
+        $fullPath = $this->getFullPath($path);
+        if ($result &&
+            $this->util->isExcluded($fullPath) === false &&
+            $this->encryptionManager->isEnabled()
+        ) {
+            $this->keyStorage->deleteAllFileKeys($fullPath);
+        }
+
+        return $result;
+    }
+
+    /**
+     * check if a file can be read
+     *
+     * @param string $path
+     * @return bool
+     */
+    public function isReadable($path) {
+
+        $isReadable = true;
+
+        $metaData = $this->getMetaData($path);
+        if (
+            !$this->is_dir($path) &&
+            isset($metaData['encrypted']) &&
+            $metaData['encrypted'] === true
+        ) {
+            $fullPath = $this->getFullPath($path);
+            $module = $this->getEncryptionModule($path);
+            $isReadable = $module->isReadable($fullPath, $this->uid);
+        }
+
+        return $this->storage->isReadable($path) && $isReadable;
+    }
+
+    /**
+     * see http://php.net/manual/en/function.copy.php
+     *
+     * @param string $path1
+     * @param string $path2
+     * @return bool
+     */
+    public function copy($path1, $path2) {
+
+        $source = $this->getFullPath($path1);
+
+        if ($this->util->isExcluded($source)) {
+            return $this->storage->copy($path1, $path2);
+        }
+
+        // need to stream copy file by file in case we copy between a encrypted
+        // and a unencrypted storage
+        $this->unlink($path2);
+        $result = $this->copyFromStorage($this, $path1, $path2);
+
+        return $result;
+    }
+
+    /**
+     * see http://php.net/manual/en/function.fopen.php
+     *
+     * @param string $path
+     * @param string $mode
+     * @return resource|bool
+     * @throws GenericEncryptionException
+     * @throws ModuleDoesNotExistsException
+     */
+    public function fopen($path, $mode) {
+
+        // check if the file is stored in the array cache, this means that we
+        // copy a file over to the versions folder, in this case we don't want to
+        // decrypt it
+        if ($this->arrayCache->hasKey('encryption_copy_version_' . $path)) {
+            $this->arrayCache->remove('encryption_copy_version_' . $path);
+            return $this->storage->fopen($path, $mode);
+        }
+
+        $encryptionEnabled = $this->encryptionManager->isEnabled();
+        $shouldEncrypt = false;
+        $encryptionModule = null;
+        $header = $this->getHeader($path);
+        $signed = (isset($header['signed']) && $header['signed'] === 'true') ? true : false;
+        $fullPath = $this->getFullPath($path);
+        $encryptionModuleId = $this->util->getEncryptionModuleId($header);
+
+        if ($this->util->isExcluded($fullPath) === false) {
+
+            $size = $unencryptedSize = 0;
+            $realFile = $this->util->stripPartialFileExtension($path);
+            $targetExists = $this->file_exists($realFile) || $this->file_exists($path);
+            $targetIsEncrypted = false;
+            if ($targetExists) {
+                // in case the file exists we require the explicit module as
+                // specified in the file header - otherwise we need to fail hard to
+                // prevent data loss on client side
+                if (!empty($encryptionModuleId)) {
+                    $targetIsEncrypted = true;
+                    $encryptionModule = $this->encryptionManager->getEncryptionModule($encryptionModuleId);
+                }
+
+                if ($this->file_exists($path)) {
+                    $size = $this->storage->filesize($path);
+                    $unencryptedSize = $this->filesize($path);
+                } else {
+                    $size = $unencryptedSize = 0;
+                }
+            }
+
+            try {
+
+                if (
+                    $mode === 'w'
+                    || $mode === 'w+'
+                    || $mode === 'wb'
+                    || $mode === 'wb+'
+                ) {
+                    // don't overwrite encrypted files if encryption is not enabled
+                    if ($targetIsEncrypted && $encryptionEnabled === false) {
+                        throw new GenericEncryptionException('Tried to access encrypted file but encryption is not enabled');
+                    }
+                    if ($encryptionEnabled) {
+                        // if $encryptionModuleId is empty, the default module will be used
+                        $encryptionModule = $this->encryptionManager->getEncryptionModule($encryptionModuleId);
+                        $shouldEncrypt = $encryptionModule->shouldEncrypt($fullPath);
+                        $signed = true;
+                    }
+                } else {
+                    $info = $this->getCache()->get($path);
+                    // only get encryption module if we found one in the header
+                    // or if file should be encrypted according to the file cache
+                    if (!empty($encryptionModuleId)) {
+                        $encryptionModule = $this->encryptionManager->getEncryptionModule($encryptionModuleId);
+                        $shouldEncrypt = true;
+                    } else if (empty($encryptionModuleId) && $info['encrypted'] === true) {
+                        // we come from a old installation. No header and/or no module defined
+                        // but the file is encrypted. In this case we need to use the
+                        // OC_DEFAULT_MODULE to read the file
+                        $encryptionModule = $this->encryptionManager->getEncryptionModule('OC_DEFAULT_MODULE');
+                        $shouldEncrypt = true;
+                        $targetIsEncrypted = true;
+                    }
+                }
+            } catch (ModuleDoesNotExistsException $e) {
+                $this->logger->warning('Encryption module "' . $encryptionModuleId .
+                    '" not found, file will be stored unencrypted (' . $e->getMessage() . ')');
+            }
+
+            // encryption disabled on write of new file and write to existing unencrypted file -> don't encrypt
+            if (!$encryptionEnabled || !$this->shouldEncrypt($path)) {
+                if (!$targetExists || !$targetIsEncrypted) {
+                    $shouldEncrypt = false;
+                }
+            }
+
+            if ($shouldEncrypt === true && $encryptionModule !== null) {
+                $headerSize = $this->getHeaderSize($path);
+                $source = $this->storage->fopen($path, $mode);
+                if (!is_resource($source)) {
+                    return false;
+                }
+                $handle = \OC\Files\Stream\Encryption::wrap($source, $path, $fullPath, $header,
+                    $this->uid, $encryptionModule, $this->storage, $this, $this->util, $this->fileHelper, $mode,
+                    $size, $unencryptedSize, $headerSize, $signed);
+                return $handle;
+            }
+
+        }
+
+        return $this->storage->fopen($path, $mode);
+    }
+
+
+    /**
+     * perform some plausibility checks if the the unencrypted size is correct.
+     * If not, we calculate the correct unencrypted size and return it
+     *
+     * @param string $path internal path relative to the storage root
+     * @param int $unencryptedSize size of the unencrypted file
+     *
+     * @return int unencrypted size
+     */
+    protected function verifyUnencryptedSize($path, $unencryptedSize) {
+
+        $size = $this->storage->filesize($path);
+        $result = $unencryptedSize;
+
+        if ($unencryptedSize < 0 ||
+            ($size > 0 && $unencryptedSize === $size)
+        ) {
+            // check if we already calculate the unencrypted size for the
+            // given path to avoid recursions
+            if (isset($this->fixUnencryptedSizeOf[$this->getFullPath($path)]) === false) {
+                $this->fixUnencryptedSizeOf[$this->getFullPath($path)] = true;
+                try {
+                    $result = $this->fixUnencryptedSize($path, $size, $unencryptedSize);
+                } catch (\Exception $e) {
+                    $this->logger->error('Couldn\'t re-calculate unencrypted size for '. $path);
+                    $this->logger->logException($e);
+                }
+                unset($this->fixUnencryptedSizeOf[$this->getFullPath($path)]);
+            }
+        }
+
+        return $result;
+    }
+
+    /**
+     * calculate the unencrypted size
+     *
+     * @param string $path internal path relative to the storage root
+     * @param int $size size of the physical file
+     * @param int $unencryptedSize size of the unencrypted file
+     *
+     * @return int calculated unencrypted size
+     */
+    protected function fixUnencryptedSize($path, $size, $unencryptedSize) {
+
+        $headerSize = $this->getHeaderSize($path);
+        $header = $this->getHeader($path);
+        $encryptionModule = $this->getEncryptionModule($path);
+
+        $stream = $this->storage->fopen($path, 'r');
+
+        // if we couldn't open the file we return the old unencrypted size
+        if (!is_resource($stream)) {
+            $this->logger->error('Could not open ' . $path . '. Recalculation of unencrypted size aborted.');
+            return $unencryptedSize;
+        }
+
+        $newUnencryptedSize = 0;
+        $size -= $headerSize;
+        $blockSize = $this->util->getBlockSize();
+
+        // if a header exists we skip it
+        if ($headerSize > 0) {
+            fread($stream, $headerSize);
+        }
+
+        // fast path, else the calculation for $lastChunkNr is bogus
+        if ($size === 0) {
+            return 0;
+        }
+
+        $signed = (isset($header['signed']) && $header['signed'] === 'true') ? true : false;
+        $unencryptedBlockSize = $encryptionModule->getUnencryptedBlockSize($signed);
+
+        // calculate last chunk nr
+        // next highest is end of chunks, one subtracted is last one
+        // we have to read the last chunk, we can't just calculate it (because of padding etc)
+
+        $lastChunkNr = ceil($size/ $blockSize)-1;
+        // calculate last chunk position
+        $lastChunkPos = ($lastChunkNr * $blockSize);
+        // try to fseek to the last chunk, if it fails we have to read the whole file
+        if (@fseek($stream, $lastChunkPos, SEEK_CUR) === 0) {
+            $newUnencryptedSize += $lastChunkNr * $unencryptedBlockSize;
+        }
+
+        $lastChunkContentEncrypted='';
+        $count = $blockSize;
+
+        while ($count > 0) {
+            $data=fread($stream, $blockSize);
+            $count=strlen($data);
+            $lastChunkContentEncrypted .= $data;
+            if(strlen($lastChunkContentEncrypted) > $blockSize) {
+                $newUnencryptedSize += $unencryptedBlockSize;
+                $lastChunkContentEncrypted=substr($lastChunkContentEncrypted, $blockSize);
+            }
+        }
+
+        fclose($stream);
+
+        // we have to decrypt the last chunk to get it actual size
+        $encryptionModule->begin($this->getFullPath($path), $this->uid, 'r', $header, []);
+        $decryptedLastChunk = $encryptionModule->decrypt($lastChunkContentEncrypted, $lastChunkNr . 'end');
+        $decryptedLastChunk .= $encryptionModule->end($this->getFullPath($path), $lastChunkNr . 'end');
+
+        // calc the real file size with the size of the last chunk
+        $newUnencryptedSize += strlen($decryptedLastChunk);
+
+        $this->updateUnencryptedSize($this->getFullPath($path), $newUnencryptedSize);
+
+        // write to cache if applicable
+        $cache = $this->storage->getCache();
+        if ($cache) {
+            $entry = $cache->get($path);
+            $cache->update($entry['fileid'], ['size' => $newUnencryptedSize]);
+        }
+
+        return $newUnencryptedSize;
+    }
+
+    /**
+     * @param Storage $sourceStorage
+     * @param string $sourceInternalPath
+     * @param string $targetInternalPath
+     * @param bool $preserveMtime
+     * @return bool
+     */
+    public function moveFromStorage(Storage $sourceStorage, $sourceInternalPath, $targetInternalPath, $preserveMtime = true) {
+        if ($sourceStorage === $this) {
+            return $this->rename($sourceInternalPath, $targetInternalPath);
+        }
+
+        // TODO clean this up once the underlying moveFromStorage in OC\Files\Storage\Wrapper\Common is fixed:
+        // - call $this->storage->moveFromStorage() instead of $this->copyBetweenStorage
+        // - copy the file cache update from  $this->copyBetweenStorage to this method
+        // - copy the copyKeys() call from  $this->copyBetweenStorage to this method
+        // - remove $this->copyBetweenStorage
+
+        if (!$sourceStorage->isDeletable($sourceInternalPath)) {
+            return false;
+        }
+
+        $result = $this->copyBetweenStorage($sourceStorage, $sourceInternalPath, $targetInternalPath, $preserveMtime, true);
+        if ($result) {
+            if ($sourceStorage->is_dir($sourceInternalPath)) {
+                $result &= $sourceStorage->rmdir($sourceInternalPath);
+            } else {
+                $result &= $sourceStorage->unlink($sourceInternalPath);
+            }
+        }
+        return $result;
+    }
+
+
+    /**
+     * @param Storage $sourceStorage
+     * @param string $sourceInternalPath
+     * @param string $targetInternalPath
+     * @param bool $preserveMtime
+     * @param bool $isRename
+     * @return bool
+     */
+    public function copyFromStorage(Storage $sourceStorage, $sourceInternalPath, $targetInternalPath, $preserveMtime = false, $isRename = false) {
+
+        // TODO clean this up once the underlying moveFromStorage in OC\Files\Storage\Wrapper\Common is fixed:
+        // - call $this->storage->copyFromStorage() instead of $this->copyBetweenStorage
+        // - copy the file cache update from  $this->copyBetweenStorage to this method
+        // - copy the copyKeys() call from  $this->copyBetweenStorage to this method
+        // - remove $this->copyBetweenStorage
+
+        return $this->copyBetweenStorage($sourceStorage, $sourceInternalPath, $targetInternalPath, $preserveMtime, $isRename);
+    }
+
+    /**
+     * Update the encrypted cache version in the database
+     *
+     * @param Storage $sourceStorage
+     * @param string $sourceInternalPath
+     * @param string $targetInternalPath
+     * @param bool $isRename
+     */
+    private function updateEncryptedVersion(Storage $sourceStorage, $sourceInternalPath, $targetInternalPath, $isRename) {
+        $isEncrypted = $this->encryptionManager->isEnabled() && $this->shouldEncrypt($targetInternalPath) ? 1 : 0;
+        $cacheInformation = [
+            'encrypted' => (bool)$isEncrypted,
+        ];
+        if($isEncrypted === 1) {
+            $encryptedVersion = $sourceStorage->getCache()->get($sourceInternalPath)['encryptedVersion'];
+
+            // In case of a move operation from an unencrypted to an encrypted
+            // storage the old encrypted version would stay with "0" while the
+            // correct value would be "1". Thus we manually set the value to "1"
+            // for those cases.
+            // See also https://github.com/owncloud/core/issues/23078
+            if($encryptedVersion === 0) {
+                $encryptedVersion = 1;
+            }
+
+            $cacheInformation['encryptedVersion'] = $encryptedVersion;
+        }
+
+        // in case of a rename we need to manipulate the source cache because
+        // this information will be kept for the new target
+        if ($isRename) {
+            $sourceStorage->getCache()->put($sourceInternalPath, $cacheInformation);
+        } else {
+            $this->getCache()->put($targetInternalPath, $cacheInformation);
+        }
+    }
+
+    /**
+     * copy file between two storages
+     *
+     * @param Storage $sourceStorage
+     * @param string $sourceInternalPath
+     * @param string $targetInternalPath
+     * @param bool $preserveMtime
+     * @param bool $isRename
+     * @return bool
+     * @throws \Exception
+     */
+    private function copyBetweenStorage(Storage $sourceStorage, $sourceInternalPath, $targetInternalPath, $preserveMtime, $isRename) {
+
+        // for versions we have nothing to do, because versions should always use the
+        // key from the original file. Just create a 1:1 copy and done
+        if ($this->isVersion($targetInternalPath) ||
+            $this->isVersion($sourceInternalPath)) {
+            // remember that we try to create a version so that we can detect it during
+            // fopen($sourceInternalPath) and by-pass the encryption in order to
+            // create a 1:1 copy of the file
+            $this->arrayCache->set('encryption_copy_version_' . $sourceInternalPath, true);
+            $result = $this->storage->copyFromStorage($sourceStorage, $sourceInternalPath, $targetInternalPath);
+            $this->arrayCache->remove('encryption_copy_version_' . $sourceInternalPath);
+            if ($result) {
+                $info = $this->getCache('', $sourceStorage)->get($sourceInternalPath);
+                // make sure that we update the unencrypted size for the version
+                if (isset($info['encrypted']) && $info['encrypted'] === true) {
+                    $this->updateUnencryptedSize(
+                        $this->getFullPath($targetInternalPath),
+                        $info['size']
+                    );
+                }
+                $this->updateEncryptedVersion($sourceStorage, $sourceInternalPath, $targetInternalPath, $isRename);
+            }
+            return $result;
+        }
+
+        // first copy the keys that we reuse the existing file key on the target location
+        // and don't create a new one which would break versions for example.
+        $mount = $this->mountManager->findByStorageId($sourceStorage->getId());
+        if (count($mount) === 1) {
+            $mountPoint = $mount[0]->getMountPoint();
+            $source = $mountPoint . '/' . $sourceInternalPath;
+            $target = $this->getFullPath($targetInternalPath);
+            $this->copyKeys($source, $target);
+        } else {
+            $this->logger->error('Could not find mount point, can\'t keep encryption keys');
+        }
+
+        if ($sourceStorage->is_dir($sourceInternalPath)) {
+            $dh = $sourceStorage->opendir($sourceInternalPath);
+            $result = $this->mkdir($targetInternalPath);
+            if (is_resource($dh)) {
+                while ($result and ($file = readdir($dh)) !== false) {
+                    if (!Filesystem::isIgnoredDir($file)) {
+                        $result &= $this->copyFromStorage($sourceStorage, $sourceInternalPath . '/' . $file, $targetInternalPath . '/' . $file, false, $isRename);
+                    }
+                }
+            }
+        } else {
+            try {
+                $source = $sourceStorage->fopen($sourceInternalPath, 'r');
+                $target = $this->fopen($targetInternalPath, 'w');
+                list(, $result) = \OC_Helper::streamCopy($source, $target);
+                fclose($source);
+                fclose($target);
+            } catch (\Exception $e) {
+                fclose($source);
+                fclose($target);
+                throw $e;
+            }
+            if($result) {
+                if ($preserveMtime) {
+                    $this->touch($targetInternalPath, $sourceStorage->filemtime($sourceInternalPath));
+                }
+                $this->updateEncryptedVersion($sourceStorage, $sourceInternalPath, $targetInternalPath, $isRename);
+            } else {
+                // delete partially written target file
+                $this->unlink($targetInternalPath);
+                // delete cache entry that was created by fopen
+                $this->getCache()->remove($targetInternalPath);
+            }
+        }
+        return (bool)$result;
+
+    }
+
+    /**
+     * get the path to a local version of the file.
+     * The local version of the file can be temporary and doesn't have to be persistent across requests
+     *
+     * @param string $path
+     * @return string
+     */
+    public function getLocalFile($path) {
+        if ($this->encryptionManager->isEnabled()) {
+            $cachedFile = $this->getCachedFile($path);
+            if (is_string($cachedFile)) {
+                return $cachedFile;
+            }
+        }
+        return $this->storage->getLocalFile($path);
+    }
+
+    /**
+     * Returns the wrapped storage's value for isLocal()
+     *
+     * @return bool wrapped storage's isLocal() value
+     */
+    public function isLocal() {
+        if ($this->encryptionManager->isEnabled()) {
+            return false;
+        }
+        return $this->storage->isLocal();
+    }
+
+    /**
+     * see http://php.net/manual/en/function.stat.php
+     * only the following keys are required in the result: size and mtime
+     *
+     * @param string $path
+     * @return array
+     */
+    public function stat($path) {
+        $stat = $this->storage->stat($path);
+        $fileSize = $this->filesize($path);
+        $stat['size'] = $fileSize;
+        $stat[7] = $fileSize;
+        return $stat;
+    }
+
+    /**
+     * see http://php.net/manual/en/function.hash.php
+     *
+     * @param string $type
+     * @param string $path
+     * @param bool $raw
+     * @return string
+     */
+    public function hash($type, $path, $raw = false) {
+        $fh = $this->fopen($path, 'rb');
+        $ctx = hash_init($type);
+        hash_update_stream($ctx, $fh);
+        fclose($fh);
+        return hash_final($ctx, $raw);
+    }
+
+    /**
+     * return full path, including mount point
+     *
+     * @param string $path relative to mount point
+     * @return string full path including mount point
+     */
+    protected function getFullPath($path) {
+        return Filesystem::normalizePath($this->mountPoint . '/' . $path);
+    }
+
+    /**
+     * read first block of encrypted file, typically this will contain the
+     * encryption header
+     *
+     * @param string $path
+     * @return string
+     */
+    protected function readFirstBlock($path) {
+        $firstBlock = '';
+        if ($this->storage->file_exists($path)) {
+            $handle = $this->storage->fopen($path, 'r');
+            $firstBlock = fread($handle, $this->util->getHeaderSize());
+            fclose($handle);
+        }
+        return $firstBlock;
+    }
+
+    /**
+     * return header size of given file
+     *
+     * @param string $path
+     * @return int
+     */
+    protected function getHeaderSize($path) {
+        $headerSize = 0;
+        $realFile = $this->util->stripPartialFileExtension($path);
+        if ($this->storage->file_exists($realFile)) {
+            $path = $realFile;
+        }
+        $firstBlock = $this->readFirstBlock($path);
+
+        if (substr($firstBlock, 0, strlen(Util::HEADER_START)) === Util::HEADER_START) {
+            $headerSize = $this->util->getHeaderSize();
+        }
+
+        return $headerSize;
+    }
+
+    /**
+     * parse raw header to array
+     *
+     * @param string $rawHeader
+     * @return array
+     */
+    protected function parseRawHeader($rawHeader) {
+        $result = array();
+        if (substr($rawHeader, 0, strlen(Util::HEADER_START)) === Util::HEADER_START) {
+            $header = $rawHeader;
+            $endAt = strpos($header, Util::HEADER_END);
+            if ($endAt !== false) {
+                $header = substr($header, 0, $endAt + strlen(Util::HEADER_END));
+
+                // +1 to not start with an ':' which would result in empty element at the beginning
+                $exploded = explode(':', substr($header, strlen(Util::HEADER_START)+1));
+
+                $element = array_shift($exploded);
+                while ($element !== Util::HEADER_END) {
+                    $result[$element] = array_shift($exploded);
+                    $element = array_shift($exploded);
+                }
+            }
+        }
+
+        return $result;
+    }
+
+    /**
+     * read header from file
+     *
+     * @param string $path
+     * @return array
+     */
+    protected function getHeader($path) {
+        $realFile = $this->util->stripPartialFileExtension($path);
+        if ($this->storage->file_exists($realFile)) {
+            $path = $realFile;
+        }
+
+        $firstBlock = $this->readFirstBlock($path);
+        $result = $this->parseRawHeader($firstBlock);
+
+        // if the header doesn't contain a encryption module we check if it is a
+        // legacy file. If true, we add the default encryption module
+        if (!isset($result[Util::HEADER_ENCRYPTION_MODULE_KEY])) {
+            if (!empty($result)) {
+                $result[Util::HEADER_ENCRYPTION_MODULE_KEY] = 'OC_DEFAULT_MODULE';
+            } else {
+                // if the header was empty we have to check first if it is a encrypted file at all
+                $info = $this->getCache()->get($path);
+                if (isset($info['encrypted']) && $info['encrypted'] === true) {
+                    $result[Util::HEADER_ENCRYPTION_MODULE_KEY] = 'OC_DEFAULT_MODULE';
+                }
+            }
+        }
+
+        return $result;
+    }
+
+    /**
+     * read encryption module needed to read/write the file located at $path
+     *
+     * @param string $path
+     * @return null|\OCP\Encryption\IEncryptionModule
+     * @throws ModuleDoesNotExistsException
+     * @throws \Exception
+     */
+    protected function getEncryptionModule($path) {
+        $encryptionModule = null;
+        $header = $this->getHeader($path);
+        $encryptionModuleId = $this->util->getEncryptionModuleId($header);
+        if (!empty($encryptionModuleId)) {
+            try {
+                $encryptionModule = $this->encryptionManager->getEncryptionModule($encryptionModuleId);
+            } catch (ModuleDoesNotExistsException $e) {
+                $this->logger->critical('Encryption module defined in "' . $path . '" not loaded!');
+                throw $e;
+            }
+        }
+
+        return $encryptionModule;
+    }
+
+    /**
+     * @param string $path
+     * @param int $unencryptedSize
+     */
+    public function updateUnencryptedSize($path, $unencryptedSize) {
+        $this->unencryptedSize[$path] = $unencryptedSize;
+    }
+
+    /**
+     * copy keys to new location
+     *
+     * @param string $source path relative to data/
+     * @param string $target path relative to data/
+     * @return bool
+     */
+    protected function copyKeys($source, $target) {
+        if (!$this->util->isExcluded($source)) {
+            return $this->keyStorage->copyKeys($source, $target);
+        }
+
+        return false;
+    }
+
+    /**
+     * check if path points to a files version
+     *
+     * @param $path
+     * @return bool
+     */
+    protected function isVersion($path) {
+        $normalized = Filesystem::normalizePath($path);
+        return substr($normalized, 0, strlen('/files_versions/')) === '/files_versions/';
+    }
+
+    /**
+     * check if the given storage should be encrypted or not
+     *
+     * @param $path
+     * @return bool
+     */
+    protected function shouldEncrypt($path) {
+        $fullPath = $this->getFullPath($path);
+        $mountPointConfig = $this->mount->getOption('encrypt', true);
+        if ($mountPointConfig === false) {
+            return false;
+        }
+
+        try {
+            $encryptionModule = $this->getEncryptionModule($fullPath);
+        } catch (ModuleDoesNotExistsException $e) {
+            return false;
+        }
+
+        if ($encryptionModule === null) {
+            $encryptionModule = $this->encryptionManager->getEncryptionModule();
+        }
+
+        return $encryptionModule->shouldEncrypt($fullPath);
+
+    }
 
 }

Spacing +26 added lines, -26 removed lines

@@ -368,8 +368,8 @@ 
 		// check if the file is stored in the array cache, this means that we
 		// copy a file over to the versions folder, in this case we don't want to
 		// decrypt it
-		if ($this->arrayCache->hasKey('encryption_copy_version_' . $path)) {
-			$this->arrayCache->remove('encryption_copy_version_' . $path);
+		if ($this->arrayCache->hasKey('encryption_copy_version_'.$path)) {
+			$this->arrayCache->remove('encryption_copy_version_'.$path);
 			return $this->storage->fopen($path, $mode);
 		}
 
@@ -439,8 +439,8 @@ 
 					}
 				}
 			} catch (ModuleDoesNotExistsException $e) {
-				$this->logger->warning('Encryption module "' . $encryptionModuleId .
-					'" not found, file will be stored unencrypted (' . $e->getMessage() . ')');
+				$this->logger->warning('Encryption module "'.$encryptionModuleId.
+					'" not found, file will be stored unencrypted ('.$e->getMessage().')');
 			}
 
 			// encryption disabled on write of new file and write to existing unencrypted file -> don't encrypt
@@ -492,7 +492,7 @@ 
 				try {
 					$result = $this->fixUnencryptedSize($path, $size, $unencryptedSize);
 				} catch (\Exception $e) {
-					$this->logger->error('Couldn\'t re-calculate unencrypted size for '. $path);
+					$this->logger->error('Couldn\'t re-calculate unencrypted size for '.$path);
 					$this->logger->logException($e);
 				}
 				unset($this->fixUnencryptedSizeOf[$this->getFullPath($path)]);
@@ -521,7 +521,7 @@ 
 
 		// if we couldn't open the file we return the old unencrypted size
 		if (!is_resource($stream)) {
-			$this->logger->error('Could not open ' . $path . '. Recalculation of unencrypted size aborted.');
+			$this->logger->error('Could not open '.$path.'. Recalculation of unencrypted size aborted.');
 			return $unencryptedSize;
 		}
 
@@ -546,7 +546,7 @@ 
 		// next highest is end of chunks, one subtracted is last one
 		// we have to read the last chunk, we can't just calculate it (because of padding etc)
 
-		$lastChunkNr = ceil($size/ $blockSize)-1;
+		$lastChunkNr = ceil($size / $blockSize) - 1;
 		// calculate last chunk position
 		$lastChunkPos = ($lastChunkNr * $blockSize);
 		// try to fseek to the last chunk, if it fails we have to read the whole file
@@ -554,16 +554,16 @@ 
 			$newUnencryptedSize += $lastChunkNr * $unencryptedBlockSize;
 		}
 
-		$lastChunkContentEncrypted='';
+		$lastChunkContentEncrypted = '';
 		$count = $blockSize;
 
 		while ($count > 0) {
-			$data=fread($stream, $blockSize);
-			$count=strlen($data);
+			$data = fread($stream, $blockSize);
+			$count = strlen($data);
 			$lastChunkContentEncrypted .= $data;
-			if(strlen($lastChunkContentEncrypted) > $blockSize) {
+			if (strlen($lastChunkContentEncrypted) > $blockSize) {
 				$newUnencryptedSize += $unencryptedBlockSize;
-				$lastChunkContentEncrypted=substr($lastChunkContentEncrypted, $blockSize);
+				$lastChunkContentEncrypted = substr($lastChunkContentEncrypted, $blockSize);
 			}
 		}
 
@@ -571,8 +571,8 @@ 
 
 		// we have to decrypt the last chunk to get it actual size
 		$encryptionModule->begin($this->getFullPath($path), $this->uid, 'r', $header, []);
-		$decryptedLastChunk = $encryptionModule->decrypt($lastChunkContentEncrypted, $lastChunkNr . 'end');
-		$decryptedLastChunk .= $encryptionModule->end($this->getFullPath($path), $lastChunkNr . 'end');
+		$decryptedLastChunk = $encryptionModule->decrypt($lastChunkContentEncrypted, $lastChunkNr.'end');
+		$decryptedLastChunk .= $encryptionModule->end($this->getFullPath($path), $lastChunkNr.'end');
 
 		// calc the real file size with the size of the last chunk
 		$newUnencryptedSize += strlen($decryptedLastChunk);
@@ -653,9 +653,9 @@ 
 	private function updateEncryptedVersion(Storage $sourceStorage, $sourceInternalPath, $targetInternalPath, $isRename) {
 		$isEncrypted = $this->encryptionManager->isEnabled() && $this->shouldEncrypt($targetInternalPath) ? 1 : 0;
 		$cacheInformation = [
-			'encrypted' => (bool)$isEncrypted,
+			'encrypted' => (bool) $isEncrypted,
 		];
-		if($isEncrypted === 1) {
+		if ($isEncrypted === 1) {
 			$encryptedVersion = $sourceStorage->getCache()->get($sourceInternalPath)['encryptedVersion'];
 
 			// In case of a move operation from an unencrypted to an encrypted
@@ -663,7 +663,7 @@ 
 			// correct value would be "1". Thus we manually set the value to "1"
 			// for those cases.
 			// See also https://github.com/owncloud/core/issues/23078
-			if($encryptedVersion === 0) {
+			if ($encryptedVersion === 0) {
 				$encryptedVersion = 1;
 			}
 
@@ -699,9 +699,9 @@ 
 			// remember that we try to create a version so that we can detect it during
 			// fopen($sourceInternalPath) and by-pass the encryption in order to
 			// create a 1:1 copy of the file
-			$this->arrayCache->set('encryption_copy_version_' . $sourceInternalPath, true);
+			$this->arrayCache->set('encryption_copy_version_'.$sourceInternalPath, true);
 			$result = $this->storage->copyFromStorage($sourceStorage, $sourceInternalPath, $targetInternalPath);
-			$this->arrayCache->remove('encryption_copy_version_' . $sourceInternalPath);
+			$this->arrayCache->remove('encryption_copy_version_'.$sourceInternalPath);
 			if ($result) {
 				$info = $this->getCache('', $sourceStorage)->get($sourceInternalPath);
 				// make sure that we update the unencrypted size for the version
@@ -721,7 +721,7 @@ 
 		$mount = $this->mountManager->findByStorageId($sourceStorage->getId());
 		if (count($mount) === 1) {
 			$mountPoint = $mount[0]->getMountPoint();
-			$source = $mountPoint . '/' . $sourceInternalPath;
+			$source = $mountPoint.'/'.$sourceInternalPath;
 			$target = $this->getFullPath($targetInternalPath);
 			$this->copyKeys($source, $target);
 		} else {
@@ -734,7 +734,7 @@ 
 			if (is_resource($dh)) {
 				while ($result and ($file = readdir($dh)) !== false) {
 					if (!Filesystem::isIgnoredDir($file)) {
-						$result &= $this->copyFromStorage($sourceStorage, $sourceInternalPath . '/' . $file, $targetInternalPath . '/' . $file, false, $isRename);
+						$result &= $this->copyFromStorage($sourceStorage, $sourceInternalPath.'/'.$file, $targetInternalPath.'/'.$file, false, $isRename);
 					}
 				}
 			}
@@ -750,7 +750,7 @@ 
 				fclose($target);
 				throw $e;
 			}
-			if($result) {
+			if ($result) {
 				if ($preserveMtime) {
 					$this->touch($targetInternalPath, $sourceStorage->filemtime($sourceInternalPath));
 				}
@@ -762,7 +762,7 @@ 
 				$this->getCache()->remove($targetInternalPath);
 			}
 		}
-		return (bool)$result;
+		return (bool) $result;
 
 	}
 
@@ -833,7 +833,7 @@ 
 	 * @return string full path including mount point
 	 */
 	protected function getFullPath($path) {
-		return Filesystem::normalizePath($this->mountPoint . '/' . $path);
+		return Filesystem::normalizePath($this->mountPoint.'/'.$path);
 	}
 
 	/**
@@ -889,7 +889,7 @@ 
 				$header = substr($header, 0, $endAt + strlen(Util::HEADER_END));
 
 				// +1 to not start with an ':' which would result in empty element at the beginning
-				$exploded = explode(':', substr($header, strlen(Util::HEADER_START)+1));
+				$exploded = explode(':', substr($header, strlen(Util::HEADER_START) + 1));
 
 				$element = array_shift($exploded);
 				while ($element !== Util::HEADER_END) {
@@ -950,7 +950,7 @@ 
 			try {
 				$encryptionModule = $this->encryptionManager->getEncryptionModule($encryptionModuleId);
 			} catch (ModuleDoesNotExistsException $e) {
-				$this->logger->critical('Encryption module defined in "' . $path . '" not loaded!');
+				$this->logger->critical('Encryption module defined in "'.$path.'" not loaded!');
 				throw $e;
 			}
 		}

apps/dav/lib/AppInfo/Application.php

Unused Use Statements -1 removed lines

@@ -25,7 +25,6 @@
 namespace OCA\DAV\AppInfo;
 
 use OCA\DAV\CalDAV\Activity\Backend;
-use OCA\DAV\CalDAV\Activity\Extension;
 use OCA\DAV\CalDAV\Activity\Provider\Event;
 use OCA\DAV\CalDAV\BirthdayService;
 use OCA\DAV\Capabilities;

Indentation +126 added lines, -126 removed lines

@@ -39,134 +39,134 @@
 
 class Application extends App {
 
-	/**
-	 * Application constructor.
-	 */
-	public function __construct() {
-		parent::__construct('dav');
+    /**
+     * Application constructor.
+     */
+    public function __construct() {
+        parent::__construct('dav');
 
-		/*
+        /*
 		 * Register capabilities
 		 */
-		$this->getContainer()->registerCapability(Capabilities::class);
-	}
-
-	/**
-	 * @param IManager $contactsManager
-	 * @param string $userID
-	 */
-	public function setupContactsProvider(IManager $contactsManager, $userID) {
-		/** @var ContactsManager $cm */
-		$cm = $this->getContainer()->query(ContactsManager::class);
-		$urlGenerator = $this->getContainer()->getServer()->getURLGenerator();
-		$cm->setupContactsProvider($contactsManager, $userID, $urlGenerator);
-	}
-
-	public function registerHooks() {
-		/** @var HookManager $hm */
-		$hm = $this->getContainer()->query(HookManager::class);
-		$hm->setup();
-
-		$dispatcher = $this->getContainer()->getServer()->getEventDispatcher();
-
-		// first time login event setup
-		$dispatcher->addListener(IUser::class . '::firstLogin', function ($event) use ($hm) {
-			if ($event instanceof GenericEvent) {
-				$hm->firstLogin($event->getSubject());
-			}
-		});
-
-		// carddav/caldav sync event setup
-		$listener = function($event) {
-			if ($event instanceof GenericEvent) {
-				/** @var BirthdayService $b */
-				$b = $this->getContainer()->query(BirthdayService::class);
-				$b->onCardChanged(
-					$event->getArgument('addressBookId'),
-					$event->getArgument('cardUri'),
-					$event->getArgument('cardData')
-				);
-			}
-		};
-
-		$dispatcher->addListener('\OCA\DAV\CardDAV\CardDavBackend::createCard', $listener);
-		$dispatcher->addListener('\OCA\DAV\CardDAV\CardDavBackend::updateCard', $listener);
-		$dispatcher->addListener('\OCA\DAV\CardDAV\CardDavBackend::deleteCard', function($event) {
-			if ($event instanceof GenericEvent) {
-				/** @var BirthdayService $b */
-				$b = $this->getContainer()->query(BirthdayService::class);
-				$b->onCardDeleted(
-					$event->getArgument('addressBookId'),
-					$event->getArgument('cardUri')
-				);
-			}
-		});
-
-		$dispatcher->addListener('OC\AccountManager::userUpdated', function(GenericEvent $event) {
-			$user = $event->getSubject();
-			$syncService = $this->getContainer()->query(SyncService::class);
-			$syncService->updateUser($user);
-		});
-
-		$dispatcher->addListener('\OCA\DAV\CalDAV\CalDavBackend::createCalendar', function(GenericEvent $event) {
-			/** @var Backend $backend */
-			$backend = $this->getContainer()->query(Backend::class);
-			$backend->onCalendarAdd(
-				$event->getArgument('calendarData')
-			);
-		});
-		$dispatcher->addListener('\OCA\DAV\CalDAV\CalDavBackend::updateCalendar', function(GenericEvent $event) {
-			/** @var Backend $backend */
-			$backend = $this->getContainer()->query(Backend::class);
-			$backend->onCalendarUpdate(
-				$event->getArgument('calendarData'),
-				$event->getArgument('shares'),
-				$event->getArgument('propertyMutations')
-			);
-		});
-		$dispatcher->addListener('\OCA\DAV\CalDAV\CalDavBackend::deleteCalendar', function(GenericEvent $event) {
-			/** @var Backend $backend */
-			$backend = $this->getContainer()->query(Backend::class);
-			$backend->onCalendarDelete(
-				$event->getArgument('calendarData'),
-				$event->getArgument('shares')
-			);
-		});
-		$dispatcher->addListener('\OCA\DAV\CalDAV\CalDavBackend::updateShares', function(GenericEvent $event) {
-			/** @var Backend $backend */
-			$backend = $this->getContainer()->query(Backend::class);
-			$backend->onCalendarUpdateShares(
-				$event->getArgument('calendarData'),
-				$event->getArgument('shares'),
-				$event->getArgument('add'),
-				$event->getArgument('remove')
-			);
-		});
-
-		$listener = function(GenericEvent $event, $eventName) {
-			/** @var Backend $backend */
-			$backend = $this->getContainer()->query(Backend::class);
-
-			$subject = Event::SUBJECT_OBJECT_ADD;
-			if ($eventName === '\OCA\DAV\CalDAV\CalDavBackend::updateCalendarObject') {
-				$subject = Event::SUBJECT_OBJECT_UPDATE;
-			} else if ($eventName === '\OCA\DAV\CalDAV\CalDavBackend::deleteCalendarObject') {
-				$subject = Event::SUBJECT_OBJECT_DELETE;
-			}
-			$backend->onTouchCalendarObject(
-				$subject,
-				$event->getArgument('calendarData'),
-				$event->getArgument('shares'),
-				$event->getArgument('objectData')
-			);
-		};
-		$dispatcher->addListener('\OCA\DAV\CalDAV\CalDavBackend::createCalendarObject', $listener);
-		$dispatcher->addListener('\OCA\DAV\CalDAV\CalDavBackend::updateCalendarObject', $listener);
-		$dispatcher->addListener('\OCA\DAV\CalDAV\CalDavBackend::deleteCalendarObject', $listener);
-	}
-
-	public function getSyncService() {
-		return $this->getContainer()->query(SyncService::class);
-	}
+        $this->getContainer()->registerCapability(Capabilities::class);
+    }
+
+    /**
+     * @param IManager $contactsManager
+     * @param string $userID
+     */
+    public function setupContactsProvider(IManager $contactsManager, $userID) {
+        /** @var ContactsManager $cm */
+        $cm = $this->getContainer()->query(ContactsManager::class);
+        $urlGenerator = $this->getContainer()->getServer()->getURLGenerator();
+        $cm->setupContactsProvider($contactsManager, $userID, $urlGenerator);
+    }
+
+    public function registerHooks() {
+        /** @var HookManager $hm */
+        $hm = $this->getContainer()->query(HookManager::class);
+        $hm->setup();
+
+        $dispatcher = $this->getContainer()->getServer()->getEventDispatcher();
+
+        // first time login event setup
+        $dispatcher->addListener(IUser::class . '::firstLogin', function ($event) use ($hm) {
+            if ($event instanceof GenericEvent) {
+                $hm->firstLogin($event->getSubject());
+            }
+        });
+
+        // carddav/caldav sync event setup
+        $listener = function($event) {
+            if ($event instanceof GenericEvent) {
+                /** @var BirthdayService $b */
+                $b = $this->getContainer()->query(BirthdayService::class);
+                $b->onCardChanged(
+                    $event->getArgument('addressBookId'),
+                    $event->getArgument('cardUri'),
+                    $event->getArgument('cardData')
+                );
+            }
+        };
+
+        $dispatcher->addListener('\OCA\DAV\CardDAV\CardDavBackend::createCard', $listener);
+        $dispatcher->addListener('\OCA\DAV\CardDAV\CardDavBackend::updateCard', $listener);
+        $dispatcher->addListener('\OCA\DAV\CardDAV\CardDavBackend::deleteCard', function($event) {
+            if ($event instanceof GenericEvent) {
+                /** @var BirthdayService $b */
+                $b = $this->getContainer()->query(BirthdayService::class);
+                $b->onCardDeleted(
+                    $event->getArgument('addressBookId'),
+                    $event->getArgument('cardUri')
+                );
+            }
+        });
+
+        $dispatcher->addListener('OC\AccountManager::userUpdated', function(GenericEvent $event) {
+            $user = $event->getSubject();
+            $syncService = $this->getContainer()->query(SyncService::class);
+            $syncService->updateUser($user);
+        });
+
+        $dispatcher->addListener('\OCA\DAV\CalDAV\CalDavBackend::createCalendar', function(GenericEvent $event) {
+            /** @var Backend $backend */
+            $backend = $this->getContainer()->query(Backend::class);
+            $backend->onCalendarAdd(
+                $event->getArgument('calendarData')
+            );
+        });
+        $dispatcher->addListener('\OCA\DAV\CalDAV\CalDavBackend::updateCalendar', function(GenericEvent $event) {
+            /** @var Backend $backend */
+            $backend = $this->getContainer()->query(Backend::class);
+            $backend->onCalendarUpdate(
+                $event->getArgument('calendarData'),
+                $event->getArgument('shares'),
+                $event->getArgument('propertyMutations')
+            );
+        });
+        $dispatcher->addListener('\OCA\DAV\CalDAV\CalDavBackend::deleteCalendar', function(GenericEvent $event) {
+            /** @var Backend $backend */
+            $backend = $this->getContainer()->query(Backend::class);
+            $backend->onCalendarDelete(
+                $event->getArgument('calendarData'),
+                $event->getArgument('shares')
+            );
+        });
+        $dispatcher->addListener('\OCA\DAV\CalDAV\CalDavBackend::updateShares', function(GenericEvent $event) {
+            /** @var Backend $backend */
+            $backend = $this->getContainer()->query(Backend::class);
+            $backend->onCalendarUpdateShares(
+                $event->getArgument('calendarData'),
+                $event->getArgument('shares'),
+                $event->getArgument('add'),
+                $event->getArgument('remove')
+            );
+        });
+
+        $listener = function(GenericEvent $event, $eventName) {
+            /** @var Backend $backend */
+            $backend = $this->getContainer()->query(Backend::class);
+
+            $subject = Event::SUBJECT_OBJECT_ADD;
+            if ($eventName === '\OCA\DAV\CalDAV\CalDavBackend::updateCalendarObject') {
+                $subject = Event::SUBJECT_OBJECT_UPDATE;
+            } else if ($eventName === '\OCA\DAV\CalDAV\CalDavBackend::deleteCalendarObject') {
+                $subject = Event::SUBJECT_OBJECT_DELETE;
+            }
+            $backend->onTouchCalendarObject(
+                $subject,
+                $event->getArgument('calendarData'),
+                $event->getArgument('shares'),
+                $event->getArgument('objectData')
+            );
+        };
+        $dispatcher->addListener('\OCA\DAV\CalDAV\CalDavBackend::createCalendarObject', $listener);
+        $dispatcher->addListener('\OCA\DAV\CalDAV\CalDavBackend::updateCalendarObject', $listener);
+        $dispatcher->addListener('\OCA\DAV\CalDAV\CalDavBackend::deleteCalendarObject', $listener);
+    }
+
+    public function getSyncService() {
+        return $this->getContainer()->query(SyncService::class);
+    }
 
 }

Spacing +1 added lines, -1 removed lines

@@ -70,7 +70,7 @@
 		$dispatcher = $this->getContainer()->getServer()->getEventDispatcher();
 
 		// first time login event setup
-		$dispatcher->addListener(IUser::class . '::firstLogin', function ($event) use ($hm) {
+		$dispatcher->addListener(IUser::class.'::firstLogin', function($event) use ($hm) {
 			if ($event instanceof GenericEvent) {
 				$hm->firstLogin($event->getSubject());
 			}

apps/files_external/lib/Lib/Storage/AmazonS3.php

Doc Comments +6 added lines

@@ -191,6 +191,9 @@ 
 		return false;
 	}
 
+	/**
+	 * @param string $path
+	 */
 	private function batchDelete ($path = null) {
 		$params = array(
 			'Bucket' => $this->bucket
@@ -516,6 +519,9 @@ 
 		return $this->id;
 	}
 
+	/**
+	 * @param string $path
+	 */
 	public function writeBack($tmpFile, $path) {
 		try {
 			$this->getConnection()->putObject(array(

Indentation +494 added lines, -494 removed lines

@@ -37,7 +37,7 @@ 
 namespace OCA\Files_External\Lib\Storage;
 
 set_include_path(get_include_path() . PATH_SEPARATOR .
-	\OC_App::getAppPath('files_external') . '/3rdparty/aws-sdk-php');
+    \OC_App::getAppPath('files_external') . '/3rdparty/aws-sdk-php');
 require_once 'aws-autoloader.php';
 
 use Aws\S3\S3Client;
@@ -47,498 +47,498 @@ 
 use OC\Files\ObjectStore\S3ConnectionTrait;
 
 class AmazonS3 extends \OC\Files\Storage\Common {
-	use S3ConnectionTrait;
-
-	/**
-	 * @var array
-	 */
-	private static $tmpFiles = array();
-
-	/**
-	 * @var int in seconds
-	 */
-	private $rescanDelay = 10;
-
-	public function __construct($parameters) {
-		parent::__construct($parameters);
-		$this->parseParams($parameters);
-	}
-
-	/**
-	 * @param string $path
-	 * @return string correctly encoded path
-	 */
-	private function normalizePath($path) {
-		$path = trim($path, '/');
-
-		if (!$path) {
-			$path = '.';
-		}
-
-		return $path;
-	}
-
-	private function isRoot($path) {
-		return $path === '.';
-	}
-
-	private function cleanKey($path) {
-		if ($this->isRoot($path)) {
-			return '/';
-		}
-		return $path;
-	}
-
-	/**
-	 * Updates old storage ids (v0.2.1 and older) that are based on key and secret to new ones based on the bucket name.
-	 * TODO Do this in an update.php. requires iterating over all users and loading the mount.json from their home
-	 *
-	 * @param array $params
-	 */
-	public function updateLegacyId (array $params) {
-		$oldId = 'amazon::' . $params['key'] . md5($params['secret']);
-
-		// find by old id or bucket
-		$stmt = \OC::$server->getDatabaseConnection()->prepare(
-			'SELECT `numeric_id`, `id` FROM `*PREFIX*storages` WHERE `id` IN (?, ?)'
-		);
-		$stmt->execute(array($oldId, $this->id));
-		while ($row = $stmt->fetch()) {
-			$storages[$row['id']] = $row['numeric_id'];
-		}
-
-		if (isset($storages[$this->id]) && isset($storages[$oldId])) {
-			// if both ids exist, delete the old storage and corresponding filecache entries
-			\OC\Files\Cache\Storage::remove($oldId);
-		} else if (isset($storages[$oldId])) {
-			// if only the old id exists do an update
-			$stmt = \OC::$server->getDatabaseConnection()->prepare(
-				'UPDATE `*PREFIX*storages` SET `id` = ? WHERE `id` = ?'
-			);
-			$stmt->execute(array($this->id, $oldId));
-		}
-		// only the bucket based id may exist, do nothing
-	}
-
-	/**
-	 * Remove a file or folder
-	 *
-	 * @param string $path
-	 * @return bool
-	 */
-	protected function remove($path) {
-		// remember fileType to reduce http calls
-		$fileType = $this->filetype($path);
-		if ($fileType === 'dir') {
-			return $this->rmdir($path);
-		} else if ($fileType === 'file') {
-			return $this->unlink($path);
-		} else {
-			return false;
-		}
-	}
-
-	public function mkdir($path) {
-		$path = $this->normalizePath($path);
-
-		if ($this->is_dir($path)) {
-			return false;
-		}
-
-		try {
-			$this->getConnection()->putObject(array(
-				'Bucket' => $this->bucket,
-				'Key' => $path . '/',
-				'Body' => '',
-				'ContentType' => 'httpd/unix-directory'
-			));
-			$this->testTimeout();
-		} catch (S3Exception $e) {
-			\OCP\Util::logException('files_external', $e);
-			return false;
-		}
-
-		return true;
-	}
-
-	public function file_exists($path) {
-		return $this->filetype($path) !== false;
-	}
-
-
-	public function rmdir($path) {
-		$path = $this->normalizePath($path);
-
-		if ($this->isRoot($path)) {
-			return $this->clearBucket();
-		}
-
-		if (!$this->file_exists($path)) {
-			return false;
-		}
-
-		return $this->batchDelete($path);
-	}
-
-	protected function clearBucket() {
-		try {
-			$this->getConnection()->clearBucket($this->bucket);
-			return true;
-			// clearBucket() is not working with Ceph, so if it fails we try the slower approach
-		} catch (\Exception $e) {
-			return $this->batchDelete();
-		}
-		return false;
-	}
-
-	private function batchDelete ($path = null) {
-		$params = array(
-			'Bucket' => $this->bucket
-		);
-		if ($path !== null) {
-			$params['Prefix'] = $path . '/';
-		}
-		try {
-			// Since there are no real directories on S3, we need
-			// to delete all objects prefixed with the path.
-			do {
-				// instead of the iterator, manually loop over the list ...
-				$objects = $this->getConnection()->listObjects($params);
-				// ... so we can delete the files in batches
-				$this->getConnection()->deleteObjects(array(
-					'Bucket' => $this->bucket,
-					'Objects' => $objects['Contents']
-				));
-				$this->testTimeout();
-				// we reached the end when the list is no longer truncated
-			} while ($objects['IsTruncated']);
-		} catch (S3Exception $e) {
-			\OCP\Util::logException('files_external', $e);
-			return false;
-		}
-		return true;
-	}
-
-	public function opendir($path) {
-		$path = $this->normalizePath($path);
-
-		if ($this->isRoot($path)) {
-			$path = '';
-		} else {
-			$path .= '/';
-		}
-
-		try {
-			$files = array();
-			$result = $this->getConnection()->getIterator('ListObjects', array(
-				'Bucket' => $this->bucket,
-				'Delimiter' => '/',
-				'Prefix' => $path
-			), array('return_prefixes' => true));
-
-			foreach ($result as $object) {
-				if (isset($object['Key']) && $object['Key'] === $path) {
-					// it's the directory itself, skip
-					continue;
-				}
-				$file = basename(
-					isset($object['Key']) ? $object['Key'] : $object['Prefix']
-				);
-				$files[] = $file;
-			}
-
-			return IteratorDirectory::wrap($files);
-		} catch (S3Exception $e) {
-			\OCP\Util::logException('files_external', $e);
-			return false;
-		}
-	}
-
-	public function stat($path) {
-		$path = $this->normalizePath($path);
-
-		try {
-			$stat = array();
-			if ($this->is_dir($path)) {
-				//folders don't really exist
-				$stat['size'] = -1; //unknown
-				$stat['mtime'] = time() - $this->rescanDelay * 1000;
-			} else {
-				$result = $this->getConnection()->headObject(array(
-					'Bucket' => $this->bucket,
-					'Key' => $path
-				));
-
-				$stat['size'] = $result['ContentLength'] ? $result['ContentLength'] : 0;
-				if ($result['Metadata']['lastmodified']) {
-					$stat['mtime'] = strtotime($result['Metadata']['lastmodified']);
-				} else {
-					$stat['mtime'] = strtotime($result['LastModified']);
-				}
-			}
-			$stat['atime'] = time();
-
-			return $stat;
-		} catch(S3Exception $e) {
-			\OCP\Util::logException('files_external', $e);
-			return false;
-		}
-	}
-
-	public function filetype($path) {
-		$path = $this->normalizePath($path);
-
-		if ($this->isRoot($path)) {
-			return 'dir';
-		}
-
-		try {
-			if ($this->getConnection()->doesObjectExist($this->bucket, $path)) {
-				return 'file';
-			}
-			if ($this->getConnection()->doesObjectExist($this->bucket, $path.'/')) {
-				return 'dir';
-			}
-		} catch (S3Exception $e) {
-			\OCP\Util::logException('files_external', $e);
-			return false;
-		}
-
-		return false;
-	}
-
-	public function unlink($path) {
-		$path = $this->normalizePath($path);
-
-		if ($this->is_dir($path)) {
-			return $this->rmdir($path);
-		}
-
-		try {
-			$this->getConnection()->deleteObject(array(
-				'Bucket' => $this->bucket,
-				'Key' => $path
-			));
-			$this->testTimeout();
-		} catch (S3Exception $e) {
-			\OCP\Util::logException('files_external', $e);
-			return false;
-		}
-
-		return true;
-	}
-
-	public function fopen($path, $mode) {
-		$path = $this->normalizePath($path);
-
-		switch ($mode) {
-			case 'r':
-			case 'rb':
-				$tmpFile = \OCP\Files::tmpFile();
-				self::$tmpFiles[$tmpFile] = $path;
-
-				try {
-					$this->getConnection()->getObject(array(
-						'Bucket' => $this->bucket,
-						'Key' => $path,
-						'SaveAs' => $tmpFile
-					));
-				} catch (S3Exception $e) {
-					\OCP\Util::logException('files_external', $e);
-					return false;
-				}
-
-				return fopen($tmpFile, 'r');
-			case 'w':
-			case 'wb':
-			case 'a':
-			case 'ab':
-			case 'r+':
-			case 'w+':
-			case 'wb+':
-			case 'a+':
-			case 'x':
-			case 'x+':
-			case 'c':
-			case 'c+':
-				if (strrpos($path, '.') !== false) {
-					$ext = substr($path, strrpos($path, '.'));
-				} else {
-					$ext = '';
-				}
-				$tmpFile = \OCP\Files::tmpFile($ext);
-				if ($this->file_exists($path)) {
-					$source = $this->fopen($path, 'r');
-					file_put_contents($tmpFile, $source);
-				}
-
-				$handle = fopen($tmpFile, $mode);
-				return CallbackWrapper::wrap($handle, null, null, function() use ($path, $tmpFile) {
-					$this->writeBack($tmpFile, $path);
-				});
-		}
-		return false;
-	}
-
-	public function touch($path, $mtime = null) {
-		$path = $this->normalizePath($path);
-
-		$metadata = array();
-		if (is_null($mtime)) {
-			$mtime = time();
-		}
-		$metadata = [
-			'lastmodified' => gmdate(\Aws\Common\Enum\DateFormat::RFC1123, $mtime)
-		];
-
-		$fileType = $this->filetype($path);
-		try {
-			if ($fileType !== false) {
-				if ($fileType === 'dir' && ! $this->isRoot($path)) {
-					$path .= '/';
-				}
-				$this->getConnection()->copyObject([
-					'Bucket' => $this->bucket,
-					'Key' => $this->cleanKey($path),
-					'Metadata' => $metadata,
-					'CopySource' => $this->bucket . '/' . $path,
-					'MetadataDirective' => 'REPLACE',
-				]);
-				$this->testTimeout();
-			} else {
-				$mimeType = \OC::$server->getMimeTypeDetector()->detectPath($path);
-				$this->getConnection()->putObject([
-					'Bucket' => $this->bucket,
-					'Key' => $this->cleanKey($path),
-					'Metadata' => $metadata,
-					'Body' => '',
-					'ContentType' => $mimeType,
-					'MetadataDirective' => 'REPLACE',
-				]);
-				$this->testTimeout();
-			}
-		} catch (S3Exception $e) {
-			\OCP\Util::logException('files_external', $e);
-			return false;
-		}
-
-		return true;
-	}
-
-	public function copy($path1, $path2) {
-		$path1 = $this->normalizePath($path1);
-		$path2 = $this->normalizePath($path2);
-
-		if ($this->is_file($path1)) {
-			try {
-				$this->getConnection()->copyObject(array(
-					'Bucket' => $this->bucket,
-					'Key' => $this->cleanKey($path2),
-					'CopySource' => S3Client::encodeKey($this->bucket . '/' . $path1)
-				));
-				$this->testTimeout();
-			} catch (S3Exception $e) {
-				\OCP\Util::logException('files_external', $e);
-				return false;
-			}
-		} else {
-			$this->remove($path2);
-
-			try {
-				$this->getConnection()->copyObject(array(
-					'Bucket' => $this->bucket,
-					'Key' => $path2 . '/',
-					'CopySource' => S3Client::encodeKey($this->bucket . '/' . $path1 . '/')
-				));
-				$this->testTimeout();
-			} catch (S3Exception $e) {
-				\OCP\Util::logException('files_external', $e);
-				return false;
-			}
-
-			$dh = $this->opendir($path1);
-			if (is_resource($dh)) {
-				while (($file = readdir($dh)) !== false) {
-					if (\OC\Files\Filesystem::isIgnoredDir($file)) {
-						continue;
-					}
-
-					$source = $path1 . '/' . $file;
-					$target = $path2 . '/' . $file;
-					$this->copy($source, $target);
-				}
-			}
-		}
-
-		return true;
-	}
-
-	public function rename($path1, $path2) {
-		$path1 = $this->normalizePath($path1);
-		$path2 = $this->normalizePath($path2);
-
-		if ($this->is_file($path1)) {
-
-			if ($this->copy($path1, $path2) === false) {
-				return false;
-			}
-
-			if ($this->unlink($path1) === false) {
-				$this->unlink($path2);
-				return false;
-			}
-		} else {
-
-			if ($this->copy($path1, $path2) === false) {
-				return false;
-			}
-
-			if ($this->rmdir($path1) === false) {
-				$this->rmdir($path2);
-				return false;
-			}
-		}
-
-		return true;
-	}
-
-	public function test() {
-		$test = $this->getConnection()->getBucketAcl(array(
-			'Bucket' => $this->bucket,
-		));
-		if (isset($test) && !is_null($test->getPath('Owner/ID'))) {
-			return true;
-		}
-		return false;
-	}
-
-	public function getId() {
-		return $this->id;
-	}
-
-	public function writeBack($tmpFile, $path) {
-		try {
-			$this->getConnection()->putObject(array(
-				'Bucket' => $this->bucket,
-				'Key' => $this->cleanKey($path),
-				'SourceFile' => $tmpFile,
-				'ContentType' => \OC::$server->getMimeTypeDetector()->detect($tmpFile),
-				'ContentLength' => filesize($tmpFile)
-			));
-			$this->testTimeout();
-
-			unlink($tmpFile);
-		} catch (S3Exception $e) {
-			\OCP\Util::logException('files_external', $e);
-			return false;
-		}
-	}
-
-	/**
-	 * check if curl is installed
-	 */
-	public static function checkDependencies() {
-		return true;
-	}
+    use S3ConnectionTrait;
+
+    /**
+     * @var array
+     */
+    private static $tmpFiles = array();
+
+    /**
+     * @var int in seconds
+     */
+    private $rescanDelay = 10;
+
+    public function __construct($parameters) {
+        parent::__construct($parameters);
+        $this->parseParams($parameters);
+    }
+
+    /**
+     * @param string $path
+     * @return string correctly encoded path
+     */
+    private function normalizePath($path) {
+        $path = trim($path, '/');
+
+        if (!$path) {
+            $path = '.';
+        }
+
+        return $path;
+    }
+
+    private function isRoot($path) {
+        return $path === '.';
+    }
+
+    private function cleanKey($path) {
+        if ($this->isRoot($path)) {
+            return '/';
+        }
+        return $path;
+    }
+
+    /**
+     * Updates old storage ids (v0.2.1 and older) that are based on key and secret to new ones based on the bucket name.
+     * TODO Do this in an update.php. requires iterating over all users and loading the mount.json from their home
+     *
+     * @param array $params
+     */
+    public function updateLegacyId (array $params) {
+        $oldId = 'amazon::' . $params['key'] . md5($params['secret']);
+
+        // find by old id or bucket
+        $stmt = \OC::$server->getDatabaseConnection()->prepare(
+            'SELECT `numeric_id`, `id` FROM `*PREFIX*storages` WHERE `id` IN (?, ?)'
+        );
+        $stmt->execute(array($oldId, $this->id));
+        while ($row = $stmt->fetch()) {
+            $storages[$row['id']] = $row['numeric_id'];
+        }
+
+        if (isset($storages[$this->id]) && isset($storages[$oldId])) {
+            // if both ids exist, delete the old storage and corresponding filecache entries
+            \OC\Files\Cache\Storage::remove($oldId);
+        } else if (isset($storages[$oldId])) {
+            // if only the old id exists do an update
+            $stmt = \OC::$server->getDatabaseConnection()->prepare(
+                'UPDATE `*PREFIX*storages` SET `id` = ? WHERE `id` = ?'
+            );
+            $stmt->execute(array($this->id, $oldId));
+        }
+        // only the bucket based id may exist, do nothing
+    }
+
+    /**
+     * Remove a file or folder
+     *
+     * @param string $path
+     * @return bool
+     */
+    protected function remove($path) {
+        // remember fileType to reduce http calls
+        $fileType = $this->filetype($path);
+        if ($fileType === 'dir') {
+            return $this->rmdir($path);
+        } else if ($fileType === 'file') {
+            return $this->unlink($path);
+        } else {
+            return false;
+        }
+    }
+
+    public function mkdir($path) {
+        $path = $this->normalizePath($path);
+
+        if ($this->is_dir($path)) {
+            return false;
+        }
+
+        try {
+            $this->getConnection()->putObject(array(
+                'Bucket' => $this->bucket,
+                'Key' => $path . '/',
+                'Body' => '',
+                'ContentType' => 'httpd/unix-directory'
+            ));
+            $this->testTimeout();
+        } catch (S3Exception $e) {
+            \OCP\Util::logException('files_external', $e);
+            return false;
+        }
+
+        return true;
+    }
+
+    public function file_exists($path) {
+        return $this->filetype($path) !== false;
+    }
+
+
+    public function rmdir($path) {
+        $path = $this->normalizePath($path);
+
+        if ($this->isRoot($path)) {
+            return $this->clearBucket();
+        }
+
+        if (!$this->file_exists($path)) {
+            return false;
+        }
+
+        return $this->batchDelete($path);
+    }
+
+    protected function clearBucket() {
+        try {
+            $this->getConnection()->clearBucket($this->bucket);
+            return true;
+            // clearBucket() is not working with Ceph, so if it fails we try the slower approach
+        } catch (\Exception $e) {
+            return $this->batchDelete();
+        }
+        return false;
+    }
+
+    private function batchDelete ($path = null) {
+        $params = array(
+            'Bucket' => $this->bucket
+        );
+        if ($path !== null) {
+            $params['Prefix'] = $path . '/';
+        }
+        try {
+            // Since there are no real directories on S3, we need
+            // to delete all objects prefixed with the path.
+            do {
+                // instead of the iterator, manually loop over the list ...
+                $objects = $this->getConnection()->listObjects($params);
+                // ... so we can delete the files in batches
+                $this->getConnection()->deleteObjects(array(
+                    'Bucket' => $this->bucket,
+                    'Objects' => $objects['Contents']
+                ));
+                $this->testTimeout();
+                // we reached the end when the list is no longer truncated
+            } while ($objects['IsTruncated']);
+        } catch (S3Exception $e) {
+            \OCP\Util::logException('files_external', $e);
+            return false;
+        }
+        return true;
+    }
+
+    public function opendir($path) {
+        $path = $this->normalizePath($path);
+
+        if ($this->isRoot($path)) {
+            $path = '';
+        } else {
+            $path .= '/';
+        }
+
+        try {
+            $files = array();
+            $result = $this->getConnection()->getIterator('ListObjects', array(
+                'Bucket' => $this->bucket,
+                'Delimiter' => '/',
+                'Prefix' => $path
+            ), array('return_prefixes' => true));
+
+            foreach ($result as $object) {
+                if (isset($object['Key']) && $object['Key'] === $path) {
+                    // it's the directory itself, skip
+                    continue;
+                }
+                $file = basename(
+                    isset($object['Key']) ? $object['Key'] : $object['Prefix']
+                );
+                $files[] = $file;
+            }
+
+            return IteratorDirectory::wrap($files);
+        } catch (S3Exception $e) {
+            \OCP\Util::logException('files_external', $e);
+            return false;
+        }
+    }
+
+    public function stat($path) {
+        $path = $this->normalizePath($path);
+
+        try {
+            $stat = array();
+            if ($this->is_dir($path)) {
+                //folders don't really exist
+                $stat['size'] = -1; //unknown
+                $stat['mtime'] = time() - $this->rescanDelay * 1000;
+            } else {
+                $result = $this->getConnection()->headObject(array(
+                    'Bucket' => $this->bucket,
+                    'Key' => $path
+                ));
+
+                $stat['size'] = $result['ContentLength'] ? $result['ContentLength'] : 0;
+                if ($result['Metadata']['lastmodified']) {
+                    $stat['mtime'] = strtotime($result['Metadata']['lastmodified']);
+                } else {
+                    $stat['mtime'] = strtotime($result['LastModified']);
+                }
+            }
+            $stat['atime'] = time();
+
+            return $stat;
+        } catch(S3Exception $e) {
+            \OCP\Util::logException('files_external', $e);
+            return false;
+        }
+    }
+
+    public function filetype($path) {
+        $path = $this->normalizePath($path);
+
+        if ($this->isRoot($path)) {
+            return 'dir';
+        }
+
+        try {
+            if ($this->getConnection()->doesObjectExist($this->bucket, $path)) {
+                return 'file';
+            }
+            if ($this->getConnection()->doesObjectExist($this->bucket, $path.'/')) {
+                return 'dir';
+            }
+        } catch (S3Exception $e) {
+            \OCP\Util::logException('files_external', $e);
+            return false;
+        }
+
+        return false;
+    }
+
+    public function unlink($path) {
+        $path = $this->normalizePath($path);
+
+        if ($this->is_dir($path)) {
+            return $this->rmdir($path);
+        }
+
+        try {
+            $this->getConnection()->deleteObject(array(
+                'Bucket' => $this->bucket,
+                'Key' => $path
+            ));
+            $this->testTimeout();
+        } catch (S3Exception $e) {
+            \OCP\Util::logException('files_external', $e);
+            return false;
+        }
+
+        return true;
+    }
+
+    public function fopen($path, $mode) {
+        $path = $this->normalizePath($path);
+
+        switch ($mode) {
+            case 'r':
+            case 'rb':
+                $tmpFile = \OCP\Files::tmpFile();
+                self::$tmpFiles[$tmpFile] = $path;
+
+                try {
+                    $this->getConnection()->getObject(array(
+                        'Bucket' => $this->bucket,
+                        'Key' => $path,
+                        'SaveAs' => $tmpFile
+                    ));
+                } catch (S3Exception $e) {
+                    \OCP\Util::logException('files_external', $e);
+                    return false;
+                }
+
+                return fopen($tmpFile, 'r');
+            case 'w':
+            case 'wb':
+            case 'a':
+            case 'ab':
+            case 'r+':
+            case 'w+':
+            case 'wb+':
+            case 'a+':
+            case 'x':
+            case 'x+':
+            case 'c':
+            case 'c+':
+                if (strrpos($path, '.') !== false) {
+                    $ext = substr($path, strrpos($path, '.'));
+                } else {
+                    $ext = '';
+                }
+                $tmpFile = \OCP\Files::tmpFile($ext);
+                if ($this->file_exists($path)) {
+                    $source = $this->fopen($path, 'r');
+                    file_put_contents($tmpFile, $source);
+                }
+
+                $handle = fopen($tmpFile, $mode);
+                return CallbackWrapper::wrap($handle, null, null, function() use ($path, $tmpFile) {
+                    $this->writeBack($tmpFile, $path);
+                });
+        }
+        return false;
+    }
+
+    public function touch($path, $mtime = null) {
+        $path = $this->normalizePath($path);
+
+        $metadata = array();
+        if (is_null($mtime)) {
+            $mtime = time();
+        }
+        $metadata = [
+            'lastmodified' => gmdate(\Aws\Common\Enum\DateFormat::RFC1123, $mtime)
+        ];
+
+        $fileType = $this->filetype($path);
+        try {
+            if ($fileType !== false) {
+                if ($fileType === 'dir' && ! $this->isRoot($path)) {
+                    $path .= '/';
+                }
+                $this->getConnection()->copyObject([
+                    'Bucket' => $this->bucket,
+                    'Key' => $this->cleanKey($path),
+                    'Metadata' => $metadata,
+                    'CopySource' => $this->bucket . '/' . $path,
+                    'MetadataDirective' => 'REPLACE',
+                ]);
+                $this->testTimeout();
+            } else {
+                $mimeType = \OC::$server->getMimeTypeDetector()->detectPath($path);
+                $this->getConnection()->putObject([
+                    'Bucket' => $this->bucket,
+                    'Key' => $this->cleanKey($path),
+                    'Metadata' => $metadata,
+                    'Body' => '',
+                    'ContentType' => $mimeType,
+                    'MetadataDirective' => 'REPLACE',
+                ]);
+                $this->testTimeout();
+            }
+        } catch (S3Exception $e) {
+            \OCP\Util::logException('files_external', $e);
+            return false;
+        }
+
+        return true;
+    }
+
+    public function copy($path1, $path2) {
+        $path1 = $this->normalizePath($path1);
+        $path2 = $this->normalizePath($path2);
+
+        if ($this->is_file($path1)) {
+            try {
+                $this->getConnection()->copyObject(array(
+                    'Bucket' => $this->bucket,
+                    'Key' => $this->cleanKey($path2),
+                    'CopySource' => S3Client::encodeKey($this->bucket . '/' . $path1)
+                ));
+                $this->testTimeout();
+            } catch (S3Exception $e) {
+                \OCP\Util::logException('files_external', $e);
+                return false;
+            }
+        } else {
+            $this->remove($path2);
+
+            try {
+                $this->getConnection()->copyObject(array(
+                    'Bucket' => $this->bucket,
+                    'Key' => $path2 . '/',
+                    'CopySource' => S3Client::encodeKey($this->bucket . '/' . $path1 . '/')
+                ));
+                $this->testTimeout();
+            } catch (S3Exception $e) {
+                \OCP\Util::logException('files_external', $e);
+                return false;
+            }
+
+            $dh = $this->opendir($path1);
+            if (is_resource($dh)) {
+                while (($file = readdir($dh)) !== false) {
+                    if (\OC\Files\Filesystem::isIgnoredDir($file)) {
+                        continue;
+                    }
+
+                    $source = $path1 . '/' . $file;
+                    $target = $path2 . '/' . $file;
+                    $this->copy($source, $target);
+                }
+            }
+        }
+
+        return true;
+    }
+
+    public function rename($path1, $path2) {
+        $path1 = $this->normalizePath($path1);
+        $path2 = $this->normalizePath($path2);
+
+        if ($this->is_file($path1)) {
+
+            if ($this->copy($path1, $path2) === false) {
+                return false;
+            }
+
+            if ($this->unlink($path1) === false) {
+                $this->unlink($path2);
+                return false;
+            }
+        } else {
+
+            if ($this->copy($path1, $path2) === false) {
+                return false;
+            }
+
+            if ($this->rmdir($path1) === false) {
+                $this->rmdir($path2);
+                return false;
+            }
+        }
+
+        return true;
+    }
+
+    public function test() {
+        $test = $this->getConnection()->getBucketAcl(array(
+            'Bucket' => $this->bucket,
+        ));
+        if (isset($test) && !is_null($test->getPath('Owner/ID'))) {
+            return true;
+        }
+        return false;
+    }
+
+    public function getId() {
+        return $this->id;
+    }
+
+    public function writeBack($tmpFile, $path) {
+        try {
+            $this->getConnection()->putObject(array(
+                'Bucket' => $this->bucket,
+                'Key' => $this->cleanKey($path),
+                'SourceFile' => $tmpFile,
+                'ContentType' => \OC::$server->getMimeTypeDetector()->detect($tmpFile),
+                'ContentLength' => filesize($tmpFile)
+            ));
+            $this->testTimeout();
+
+            unlink($tmpFile);
+        } catch (S3Exception $e) {
+            \OCP\Util::logException('files_external', $e);
+            return false;
+        }
+    }
+
+    /**
+     * check if curl is installed
+     */
+    public static function checkDependencies() {
+        return true;
+    }
 
 }

Spacing +15 added lines, -15 removed lines

@@ -36,8 +36,8 @@ 
 
 namespace OCA\Files_External\Lib\Storage;
 
-set_include_path(get_include_path() . PATH_SEPARATOR .
-	\OC_App::getAppPath('files_external') . '/3rdparty/aws-sdk-php');
+set_include_path(get_include_path().PATH_SEPARATOR.
+	\OC_App::getAppPath('files_external').'/3rdparty/aws-sdk-php');
 require_once 'aws-autoloader.php';
 
 use Aws\S3\S3Client;
@@ -95,8 +95,8 @@ 
 	 *
 	 * @param array $params
 	 */
-	public function updateLegacyId (array $params) {
-		$oldId = 'amazon::' . $params['key'] . md5($params['secret']);
+	public function updateLegacyId(array $params) {
+		$oldId = 'amazon::'.$params['key'].md5($params['secret']);
 
 		// find by old id or bucket
 		$stmt = \OC::$server->getDatabaseConnection()->prepare(
@@ -148,7 +148,7 @@ 
 		try {
 			$this->getConnection()->putObject(array(
 				'Bucket' => $this->bucket,
-				'Key' => $path . '/',
+				'Key' => $path.'/',
 				'Body' => '',
 				'ContentType' => 'httpd/unix-directory'
 			));
@@ -191,12 +191,12 @@ 
 		return false;
 	}
 
-	private function batchDelete ($path = null) {
+	private function batchDelete($path = null) {
 		$params = array(
 			'Bucket' => $this->bucket
 		);
 		if ($path !== null) {
-			$params['Prefix'] = $path . '/';
+			$params['Prefix'] = $path.'/';
 		}
 		try {
 			// Since there are no real directories on S3, we need
@@ -279,7 +279,7 @@ 
 			$stat['atime'] = time();
 
 			return $stat;
-		} catch(S3Exception $e) {
+		} catch (S3Exception $e) {
 			\OCP\Util::logException('files_external', $e);
 			return false;
 		}
@@ -394,14 +394,14 @@ 
 		$fileType = $this->filetype($path);
 		try {
 			if ($fileType !== false) {
-				if ($fileType === 'dir' && ! $this->isRoot($path)) {
+				if ($fileType === 'dir' && !$this->isRoot($path)) {
 					$path .= '/';
 				}
 				$this->getConnection()->copyObject([
 					'Bucket' => $this->bucket,
 					'Key' => $this->cleanKey($path),
 					'Metadata' => $metadata,
-					'CopySource' => $this->bucket . '/' . $path,
+					'CopySource' => $this->bucket.'/'.$path,
 					'MetadataDirective' => 'REPLACE',
 				]);
 				$this->testTimeout();
@@ -434,7 +434,7 @@ 
 				$this->getConnection()->copyObject(array(
 					'Bucket' => $this->bucket,
 					'Key' => $this->cleanKey($path2),
-					'CopySource' => S3Client::encodeKey($this->bucket . '/' . $path1)
+					'CopySource' => S3Client::encodeKey($this->bucket.'/'.$path1)
 				));
 				$this->testTimeout();
 			} catch (S3Exception $e) {
@@ -447,8 +447,8 @@ 
 			try {
 				$this->getConnection()->copyObject(array(
 					'Bucket' => $this->bucket,
-					'Key' => $path2 . '/',
-					'CopySource' => S3Client::encodeKey($this->bucket . '/' . $path1 . '/')
+					'Key' => $path2.'/',
+					'CopySource' => S3Client::encodeKey($this->bucket.'/'.$path1.'/')
 				));
 				$this->testTimeout();
 			} catch (S3Exception $e) {
@@ -463,8 +463,8 @@ 
 						continue;
 					}
 
-					$source = $path1 . '/' . $file;
-					$target = $path2 . '/' . $file;
+					$source = $path1.'/'.$file;
+					$target = $path2.'/'.$file;
 					$this->copy($source, $target);
 				}
 			}

apps/files_external/lib/Lib/Storage/Dropbox.php

Doc Comments +6 added lines

@@ -76,6 +76,9 @@ 
 		return false;
 	}
 
+	/**
+	 * @param string $path
+	 */
 	private function setMetaData($path, $metaData) {
 		$this->metaData[ltrim($path, '/')] = $metaData;
 	}
@@ -316,6 +319,9 @@ 
 		return false;
 	}
 
+	/**
+	 * @param string $path
+	 */
 	public function writeBack($tmpFile, $path) {
 		$handle = fopen($tmpFile, 'r');
 		try {

Indentation +290 added lines, -290 removed lines

@@ -40,317 +40,317 @@
 
 class Dropbox extends \OC\Files\Storage\Common {
 
-	private $dropbox;
-	private $root;
-	private $id;
-	private $metaData = array();
-	private $oauth;
+    private $dropbox;
+    private $root;
+    private $id;
+    private $metaData = array();
+    private $oauth;
 
-	public function __construct($params) {
-		if (isset($params['configured']) && $params['configured'] == 'true'
-			&& isset($params['app_key'])
-			&& isset($params['app_secret'])
-			&& isset($params['token'])
-			&& isset($params['token_secret'])
-		) {
-			$this->root = isset($params['root']) ? $params['root'] : '';
-			$this->id = 'dropbox::'.$params['app_key'] . $params['token']. '/' . $this->root;
-			$this->oauth = new \Dropbox_OAuth_Curl($params['app_key'], $params['app_secret']);
-			$this->oauth->setToken($params['token'], $params['token_secret']);
-			// note: Dropbox_API connection is lazy
-			$this->dropbox = new \Dropbox_API($this->oauth, 'auto');
-		} else {
-			throw new \Exception('Creating Dropbox storage failed');
-		}
-	}
+    public function __construct($params) {
+        if (isset($params['configured']) && $params['configured'] == 'true'
+            && isset($params['app_key'])
+            && isset($params['app_secret'])
+            && isset($params['token'])
+            && isset($params['token_secret'])
+        ) {
+            $this->root = isset($params['root']) ? $params['root'] : '';
+            $this->id = 'dropbox::'.$params['app_key'] . $params['token']. '/' . $this->root;
+            $this->oauth = new \Dropbox_OAuth_Curl($params['app_key'], $params['app_secret']);
+            $this->oauth->setToken($params['token'], $params['token_secret']);
+            // note: Dropbox_API connection is lazy
+            $this->dropbox = new \Dropbox_API($this->oauth, 'auto');
+        } else {
+            throw new \Exception('Creating Dropbox storage failed');
+        }
+    }
 
-	/**
-	 * @param string $path
-	 */
-	private function deleteMetaData($path) {
-		$path = ltrim($this->root.$path, '/');
-		if (isset($this->metaData[$path])) {
-			unset($this->metaData[$path]);
-			return true;
-		}
-		return false;
-	}
+    /**
+     * @param string $path
+     */
+    private function deleteMetaData($path) {
+        $path = ltrim($this->root.$path, '/');
+        if (isset($this->metaData[$path])) {
+            unset($this->metaData[$path]);
+            return true;
+        }
+        return false;
+    }
 
-	private function setMetaData($path, $metaData) {
-		$this->metaData[ltrim($path, '/')] = $metaData;
-	}
+    private function setMetaData($path, $metaData) {
+        $this->metaData[ltrim($path, '/')] = $metaData;
+    }
 
-	/**
-	 * Returns the path's metadata
-	 * @param string $path path for which to return the metadata
-	 * @param bool $list if true, also return the directory's contents
-	 * @return mixed directory contents if $list is true, file metadata if $list is
-	 * false, null if the file doesn't exist or "false" if the operation failed
-	 */
-	private function getDropBoxMetaData($path, $list = false) {
-		$path = ltrim($this->root.$path, '/');
-		if ( ! $list && isset($this->metaData[$path])) {
-			return $this->metaData[$path];
-		} else {
-			if ($list) {
-				try {
-					$response = $this->dropbox->getMetaData($path);
-				} catch (\Dropbox_Exception_Forbidden $e) {
-					throw new StorageNotAvailableException('Dropbox API rate limit exceeded', StorageNotAvailableException::STATUS_ERROR, $e);
-				} catch (\Exception $exception) {
-					\OCP\Util::writeLog('files_external', $exception->getMessage(), \OCP\Util::ERROR);
-					return false;
-				}
-				$contents = array();
-				if ($response && isset($response['contents'])) {
-					// Cache folder's contents
-					foreach ($response['contents'] as $file) {
-						if (!isset($file['is_deleted']) || !$file['is_deleted']) {
-							$this->setMetaData($path.'/'.basename($file['path']), $file);
-							$contents[] = $file;
-						}
-					}
-					unset($response['contents']);
-				}
-				if (!isset($response['is_deleted']) || !$response['is_deleted']) {
-					$this->setMetaData($path, $response);
-				}
-				// Return contents of folder only
-				return $contents;
-			} else {
-				try {
-					$requestPath = $path;
-					if ($path === '.') {
-						$requestPath = '';
-					}
+    /**
+     * Returns the path's metadata
+     * @param string $path path for which to return the metadata
+     * @param bool $list if true, also return the directory's contents
+     * @return mixed directory contents if $list is true, file metadata if $list is
+     * false, null if the file doesn't exist or "false" if the operation failed
+     */
+    private function getDropBoxMetaData($path, $list = false) {
+        $path = ltrim($this->root.$path, '/');
+        if ( ! $list && isset($this->metaData[$path])) {
+            return $this->metaData[$path];
+        } else {
+            if ($list) {
+                try {
+                    $response = $this->dropbox->getMetaData($path);
+                } catch (\Dropbox_Exception_Forbidden $e) {
+                    throw new StorageNotAvailableException('Dropbox API rate limit exceeded', StorageNotAvailableException::STATUS_ERROR, $e);
+                } catch (\Exception $exception) {
+                    \OCP\Util::writeLog('files_external', $exception->getMessage(), \OCP\Util::ERROR);
+                    return false;
+                }
+                $contents = array();
+                if ($response && isset($response['contents'])) {
+                    // Cache folder's contents
+                    foreach ($response['contents'] as $file) {
+                        if (!isset($file['is_deleted']) || !$file['is_deleted']) {
+                            $this->setMetaData($path.'/'.basename($file['path']), $file);
+                            $contents[] = $file;
+                        }
+                    }
+                    unset($response['contents']);
+                }
+                if (!isset($response['is_deleted']) || !$response['is_deleted']) {
+                    $this->setMetaData($path, $response);
+                }
+                // Return contents of folder only
+                return $contents;
+            } else {
+                try {
+                    $requestPath = $path;
+                    if ($path === '.') {
+                        $requestPath = '';
+                    }
 
-					$response = $this->dropbox->getMetaData($requestPath, 'false');
-					if (!isset($response['is_deleted']) || !$response['is_deleted']) {
-						$this->setMetaData($path, $response);
-						return $response;
-					}
-					return null;
-				} catch (\Dropbox_Exception_Forbidden $e) {
-					throw new StorageNotAvailableException('Dropbox API rate limit exceeded', StorageNotAvailableException::STATUS_ERROR, $e);
-				} catch (\Exception $exception) {
-					if ($exception instanceof \Dropbox_Exception_NotFound) {
-						// don't log, might be a file_exist check
-						return false;
-					}
-					\OCP\Util::writeLog('files_external', $exception->getMessage(), \OCP\Util::ERROR);
-					return false;
-				}
-			}
-		}
-	}
+                    $response = $this->dropbox->getMetaData($requestPath, 'false');
+                    if (!isset($response['is_deleted']) || !$response['is_deleted']) {
+                        $this->setMetaData($path, $response);
+                        return $response;
+                    }
+                    return null;
+                } catch (\Dropbox_Exception_Forbidden $e) {
+                    throw new StorageNotAvailableException('Dropbox API rate limit exceeded', StorageNotAvailableException::STATUS_ERROR, $e);
+                } catch (\Exception $exception) {
+                    if ($exception instanceof \Dropbox_Exception_NotFound) {
+                        // don't log, might be a file_exist check
+                        return false;
+                    }
+                    \OCP\Util::writeLog('files_external', $exception->getMessage(), \OCP\Util::ERROR);
+                    return false;
+                }
+            }
+        }
+    }
 
-	public function getId(){
-		return $this->id;
-	}
+    public function getId(){
+        return $this->id;
+    }
 
-	public function mkdir($path) {
-		$path = $this->root.$path;
-		try {
-			$this->dropbox->createFolder($path);
-			return true;
-		} catch (\Exception $exception) {
-			\OCP\Util::writeLog('files_external', $exception->getMessage(), \OCP\Util::ERROR);
-			return false;
-		}
-	}
+    public function mkdir($path) {
+        $path = $this->root.$path;
+        try {
+            $this->dropbox->createFolder($path);
+            return true;
+        } catch (\Exception $exception) {
+            \OCP\Util::writeLog('files_external', $exception->getMessage(), \OCP\Util::ERROR);
+            return false;
+        }
+    }
 
-	public function rmdir($path) {
-		return $this->unlink($path);
-	}
+    public function rmdir($path) {
+        return $this->unlink($path);
+    }
 
-	public function opendir($path) {
-		$contents = $this->getDropBoxMetaData($path, true);
-		if ($contents !== false) {
-			$files = array();
-			foreach ($contents as $file) {
-				$files[] = basename($file['path']);
-			}
-			return IteratorDirectory::wrap($files);
-		}
-		return false;
-	}
+    public function opendir($path) {
+        $contents = $this->getDropBoxMetaData($path, true);
+        if ($contents !== false) {
+            $files = array();
+            foreach ($contents as $file) {
+                $files[] = basename($file['path']);
+            }
+            return IteratorDirectory::wrap($files);
+        }
+        return false;
+    }
 
-	public function stat($path) {
-		$metaData = $this->getDropBoxMetaData($path);
-		if ($metaData) {
-			$stat['size'] = $metaData['bytes'];
-			$stat['atime'] = time();
-			$stat['mtime'] = (isset($metaData['modified'])) ? strtotime($metaData['modified']) : time();
-			return $stat;
-		}
-		return false;
-	}
+    public function stat($path) {
+        $metaData = $this->getDropBoxMetaData($path);
+        if ($metaData) {
+            $stat['size'] = $metaData['bytes'];
+            $stat['atime'] = time();
+            $stat['mtime'] = (isset($metaData['modified'])) ? strtotime($metaData['modified']) : time();
+            return $stat;
+        }
+        return false;
+    }
 
-	public function filetype($path) {
-		if ($path == '' || $path == '/') {
-			return 'dir';
-		} else {
-			$metaData = $this->getDropBoxMetaData($path);
-			if ($metaData) {
-				if ($metaData['is_dir'] == 'true') {
-					return 'dir';
-				} else {
-					return 'file';
-				}
-			}
-		}
-		return false;
-	}
+    public function filetype($path) {
+        if ($path == '' || $path == '/') {
+            return 'dir';
+        } else {
+            $metaData = $this->getDropBoxMetaData($path);
+            if ($metaData) {
+                if ($metaData['is_dir'] == 'true') {
+                    return 'dir';
+                } else {
+                    return 'file';
+                }
+            }
+        }
+        return false;
+    }
 
-	public function file_exists($path) {
-		if ($path == '' || $path == '/') {
-			return true;
-		}
-		if ($this->getDropBoxMetaData($path)) {
-			return true;
-		}
-		return false;
-	}
+    public function file_exists($path) {
+        if ($path == '' || $path == '/') {
+            return true;
+        }
+        if ($this->getDropBoxMetaData($path)) {
+            return true;
+        }
+        return false;
+    }
 
-	public function unlink($path) {
-		try {
-			$this->dropbox->delete($this->root.$path);
-			$this->deleteMetaData($path);
-			return true;
-		} catch (\Exception $exception) {
-			\OCP\Util::writeLog('files_external', $exception->getMessage(), \OCP\Util::ERROR);
-			return false;
-		}
-	}
+    public function unlink($path) {
+        try {
+            $this->dropbox->delete($this->root.$path);
+            $this->deleteMetaData($path);
+            return true;
+        } catch (\Exception $exception) {
+            \OCP\Util::writeLog('files_external', $exception->getMessage(), \OCP\Util::ERROR);
+            return false;
+        }
+    }
 
-	public function rename($path1, $path2) {
-		try {
-			// overwrite if target file exists and is not a directory
-			$destMetaData = $this->getDropBoxMetaData($path2);
-			if (isset($destMetaData) && $destMetaData !== false && !$destMetaData['is_dir']) {
-				$this->unlink($path2);
-			}
-			$this->dropbox->move($this->root.$path1, $this->root.$path2);
-			$this->deleteMetaData($path1);
-			return true;
-		} catch (\Exception $exception) {
-			\OCP\Util::writeLog('files_external', $exception->getMessage(), \OCP\Util::ERROR);
-			return false;
-		}
-	}
+    public function rename($path1, $path2) {
+        try {
+            // overwrite if target file exists and is not a directory
+            $destMetaData = $this->getDropBoxMetaData($path2);
+            if (isset($destMetaData) && $destMetaData !== false && !$destMetaData['is_dir']) {
+                $this->unlink($path2);
+            }
+            $this->dropbox->move($this->root.$path1, $this->root.$path2);
+            $this->deleteMetaData($path1);
+            return true;
+        } catch (\Exception $exception) {
+            \OCP\Util::writeLog('files_external', $exception->getMessage(), \OCP\Util::ERROR);
+            return false;
+        }
+    }
 
-	public function copy($path1, $path2) {
-		$path1 = $this->root.$path1;
-		$path2 = $this->root.$path2;
-		try {
-			$this->dropbox->copy($path1, $path2);
-			return true;
-		} catch (\Exception $exception) {
-			\OCP\Util::writeLog('files_external', $exception->getMessage(), \OCP\Util::ERROR);
-			return false;
-		}
-	}
+    public function copy($path1, $path2) {
+        $path1 = $this->root.$path1;
+        $path2 = $this->root.$path2;
+        try {
+            $this->dropbox->copy($path1, $path2);
+            return true;
+        } catch (\Exception $exception) {
+            \OCP\Util::writeLog('files_external', $exception->getMessage(), \OCP\Util::ERROR);
+            return false;
+        }
+    }
 
-	public function fopen($path, $mode) {
-		$path = $this->root.$path;
-		switch ($mode) {
-			case 'r':
-			case 'rb':
-				try {
-					// slashes need to stay
-					$encodedPath = str_replace('%2F', '/', rawurlencode(trim($path, '/')));
-					$downloadUrl = 'https://api-content.dropbox.com/1/files/auto/' . $encodedPath;
-					$headers = $this->oauth->getOAuthHeader($downloadUrl, [], 'GET');
+    public function fopen($path, $mode) {
+        $path = $this->root.$path;
+        switch ($mode) {
+            case 'r':
+            case 'rb':
+                try {
+                    // slashes need to stay
+                    $encodedPath = str_replace('%2F', '/', rawurlencode(trim($path, '/')));
+                    $downloadUrl = 'https://api-content.dropbox.com/1/files/auto/' . $encodedPath;
+                    $headers = $this->oauth->getOAuthHeader($downloadUrl, [], 'GET');
 
-					$client = \OC::$server->getHTTPClientService()->newClient();
-					try {
-						$response = $client->get($downloadUrl, [
-							'headers' => $headers,
-							'stream' => true,
-						]);
-					} catch (RequestException $e) {
-						if (!is_null($e->getResponse())) {
-							if ($e->getResponse()->getStatusCode() === 404) {
-								return false;
-							} else {
-								throw $e;
-							}
-						} else {
-							throw $e;
-						}
-					}
+                    $client = \OC::$server->getHTTPClientService()->newClient();
+                    try {
+                        $response = $client->get($downloadUrl, [
+                            'headers' => $headers,
+                            'stream' => true,
+                        ]);
+                    } catch (RequestException $e) {
+                        if (!is_null($e->getResponse())) {
+                            if ($e->getResponse()->getStatusCode() === 404) {
+                                return false;
+                            } else {
+                                throw $e;
+                            }
+                        } else {
+                            throw $e;
+                        }
+                    }
 
-					$handle = $response->getBody();
-					return RetryWrapper::wrap($handle);
-				} catch (\Exception $exception) {
-					\OCP\Util::writeLog('files_external', $exception->getMessage(), \OCP\Util::ERROR);
-					return false;
-				}
-			case 'w':
-			case 'wb':
-			case 'a':
-			case 'ab':
-			case 'r+':
-			case 'w+':
-			case 'wb+':
-			case 'a+':
-			case 'x':
-			case 'x+':
-			case 'c':
-			case 'c+':
-				if (strrpos($path, '.') !== false) {
-					$ext = substr($path, strrpos($path, '.'));
-				} else {
-					$ext = '';
-				}
-				$tmpFile = \OCP\Files::tmpFile($ext);
-				if ($this->file_exists($path)) {
-					$source = $this->fopen($path, 'r');
-					file_put_contents($tmpFile, $source);
-				}
-			$handle = fopen($tmpFile, $mode);
-			return CallbackWrapper::wrap($handle, null, null, function () use ($path, $tmpFile) {
-				$this->writeBack($tmpFile, $path);
-			});
-		}
-		return false;
-	}
+                    $handle = $response->getBody();
+                    return RetryWrapper::wrap($handle);
+                } catch (\Exception $exception) {
+                    \OCP\Util::writeLog('files_external', $exception->getMessage(), \OCP\Util::ERROR);
+                    return false;
+                }
+            case 'w':
+            case 'wb':
+            case 'a':
+            case 'ab':
+            case 'r+':
+            case 'w+':
+            case 'wb+':
+            case 'a+':
+            case 'x':
+            case 'x+':
+            case 'c':
+            case 'c+':
+                if (strrpos($path, '.') !== false) {
+                    $ext = substr($path, strrpos($path, '.'));
+                } else {
+                    $ext = '';
+                }
+                $tmpFile = \OCP\Files::tmpFile($ext);
+                if ($this->file_exists($path)) {
+                    $source = $this->fopen($path, 'r');
+                    file_put_contents($tmpFile, $source);
+                }
+            $handle = fopen($tmpFile, $mode);
+            return CallbackWrapper::wrap($handle, null, null, function () use ($path, $tmpFile) {
+                $this->writeBack($tmpFile, $path);
+            });
+        }
+        return false;
+    }
 
-	public function writeBack($tmpFile, $path) {
-		$handle = fopen($tmpFile, 'r');
-		try {
-			$this->dropbox->putFile($path, $handle);
-			unlink($tmpFile);
-			$this->deleteMetaData($path);
-		} catch (\Exception $exception) {
-			\OCP\Util::writeLog('files_external', $exception->getMessage(), \OCP\Util::ERROR);
-		}
-	}
+    public function writeBack($tmpFile, $path) {
+        $handle = fopen($tmpFile, 'r');
+        try {
+            $this->dropbox->putFile($path, $handle);
+            unlink($tmpFile);
+            $this->deleteMetaData($path);
+        } catch (\Exception $exception) {
+            \OCP\Util::writeLog('files_external', $exception->getMessage(), \OCP\Util::ERROR);
+        }
+    }
 
-	public function free_space($path) {
-		try {
-			$info = $this->dropbox->getAccountInfo();
-			return $info['quota_info']['quota'] - $info['quota_info']['normal'];
-		} catch (\Exception $exception) {
-			\OCP\Util::writeLog('files_external', $exception->getMessage(), \OCP\Util::ERROR);
-			return false;
-		}
-	}
+    public function free_space($path) {
+        try {
+            $info = $this->dropbox->getAccountInfo();
+            return $info['quota_info']['quota'] - $info['quota_info']['normal'];
+        } catch (\Exception $exception) {
+            \OCP\Util::writeLog('files_external', $exception->getMessage(), \OCP\Util::ERROR);
+            return false;
+        }
+    }
 
-	public function touch($path, $mtime = null) {
-		if ($this->file_exists($path)) {
-			return false;
-		} else {
-			$this->file_put_contents($path, '');
-		}
-		return true;
-	}
+    public function touch($path, $mtime = null) {
+        if ($this->file_exists($path)) {
+            return false;
+        } else {
+            $this->file_put_contents($path, '');
+        }
+        return true;
+    }
 
-	/**
-	 * check if curl is installed
-	 */
-	public static function checkDependencies() {
-		return true;
-	}
+    /**
+     * check if curl is installed
+     */
+    public static function checkDependencies() {
+        return true;
+    }
 
 }

Spacing +6 added lines, -6 removed lines

@@ -36,7 +36,7 @@ 
 use Icewind\Streams\RetryWrapper;
 use OCP\Files\StorageNotAvailableException;
 
-require_once __DIR__ . '/../../../3rdparty/Dropbox/autoload.php';
+require_once __DIR__.'/../../../3rdparty/Dropbox/autoload.php';
 
 class Dropbox extends \OC\Files\Storage\Common {
 
@@ -54,7 +54,7 @@ 
 			&& isset($params['token_secret'])
 		) {
 			$this->root = isset($params['root']) ? $params['root'] : '';
-			$this->id = 'dropbox::'.$params['app_key'] . $params['token']. '/' . $this->root;
+			$this->id = 'dropbox::'.$params['app_key'].$params['token'].'/'.$this->root;
 			$this->oauth = new \Dropbox_OAuth_Curl($params['app_key'], $params['app_secret']);
 			$this->oauth->setToken($params['token'], $params['token_secret']);
 			// note: Dropbox_API connection is lazy
@@ -89,7 +89,7 @@ 
 	 */
 	private function getDropBoxMetaData($path, $list = false) {
 		$path = ltrim($this->root.$path, '/');
-		if ( ! $list && isset($this->metaData[$path])) {
+		if (!$list && isset($this->metaData[$path])) {
 			return $this->metaData[$path];
 		} else {
 			if ($list) {
@@ -144,7 +144,7 @@ 
 		}
 	}
 
-	public function getId(){
+	public function getId() {
 		return $this->id;
 	}
 
@@ -259,7 +259,7 @@ 
 				try {
 					// slashes need to stay
 					$encodedPath = str_replace('%2F', '/', rawurlencode(trim($path, '/')));
-					$downloadUrl = 'https://api-content.dropbox.com/1/files/auto/' . $encodedPath;
+					$downloadUrl = 'https://api-content.dropbox.com/1/files/auto/'.$encodedPath;
 					$headers = $this->oauth->getOAuthHeader($downloadUrl, [], 'GET');
 
 					$client = \OC::$server->getHTTPClientService()->newClient();
@@ -309,7 +309,7 @@ 
 					file_put_contents($tmpFile, $source);
 				}
 			$handle = fopen($tmpFile, $mode);
-			return CallbackWrapper::wrap($handle, null, null, function () use ($path, $tmpFile) {
+			return CallbackWrapper::wrap($handle, null, null, function() use ($path, $tmpFile) {
 				$this->writeBack($tmpFile, $path);
 			});
 		}

apps/files_external/lib/Lib/Storage/Google.php

Doc Comments +4 added lines, -1 removed lines

@@ -216,7 +216,7 @@ 
 	 *
 	 * @param \Google_Service_Drive_DriveFile
 	 *
-	 * @return true if the file is a Google Doc file, false otherwise
+	 * @return boolean if the file is a Google Doc file, false otherwise
 	 */
 	private function isGoogleDocFile($file) {
 		return $this->getGoogleDocExtension($file->getMimeType()) !== '';
@@ -505,6 +505,9 @@ 
 		}
 	}
 
+	/**
+	 * @param string $path
+	 */
 	public function writeBack($tmpFile, $path) {
 		$parentFolder = $this->getDriveFile(dirname($path));
 		if ($parentFolder) {

Indentation +675 added lines, -675 removed lines

@@ -41,684 +41,684 @@
 use Icewind\Streams\RetryWrapper;
 
 set_include_path(get_include_path().PATH_SEPARATOR.
-	\OC_App::getAppPath('files_external').'/3rdparty/google-api-php-client/src');
+    \OC_App::getAppPath('files_external').'/3rdparty/google-api-php-client/src');
 require_once 'Google/autoload.php';
 
 class Google extends \OC\Files\Storage\Common {
 
-	private $client;
-	private $id;
-	private $service;
-	private $driveFiles;
-
-	// Google Doc mimetypes
-	const FOLDER = 'application/vnd.google-apps.folder';
-	const DOCUMENT = 'application/vnd.google-apps.document';
-	const SPREADSHEET = 'application/vnd.google-apps.spreadsheet';
-	const DRAWING = 'application/vnd.google-apps.drawing';
-	const PRESENTATION = 'application/vnd.google-apps.presentation';
-	const MAP = 'application/vnd.google-apps.map';
-
-	public function __construct($params) {
-		if (isset($params['configured']) && $params['configured'] === 'true'
-			&& isset($params['client_id']) && isset($params['client_secret'])
-			&& isset($params['token'])
-		) {
-			$this->client = new \Google_Client();
-			$this->client->setClientId($params['client_id']);
-			$this->client->setClientSecret($params['client_secret']);
-			$this->client->setScopes(array('https://www.googleapis.com/auth/drive'));
-			$this->client->setAccessToken($params['token']);
-			// if curl isn't available we're likely to run into
-			// https://github.com/google/google-api-php-client/issues/59
-			// - disable gzip to avoid it.
-			if (!function_exists('curl_version') || !function_exists('curl_exec')) {
-				$this->client->setClassConfig("Google_Http_Request", "disable_gzip", true);
-			}
-			// note: API connection is lazy
-			$this->service = new \Google_Service_Drive($this->client);
-			$token = json_decode($params['token'], true);
-			$this->id = 'google::'.substr($params['client_id'], 0, 30).$token['created'];
-		} else {
-			throw new \Exception('Creating Google storage failed');
-		}
-	}
-
-	public function getId() {
-		return $this->id;
-	}
-
-	/**
-	 * Get the Google_Service_Drive_DriveFile object for the specified path.
-	 * Returns false on failure.
-	 * @param string $path
-	 * @return \Google_Service_Drive_DriveFile|false
-	 */
-	private function getDriveFile($path) {
-		// Remove leading and trailing slashes
-		$path = trim($path, '/');
-		if ($path === '.') {
-			$path = '';
-		}
-		if (isset($this->driveFiles[$path])) {
-			return $this->driveFiles[$path];
-		} else if ($path === '') {
-			$root = $this->service->files->get('root');
-			$this->driveFiles[$path] = $root;
-			return $root;
-		} else {
-			// Google Drive SDK does not have methods for retrieving files by path
-			// Instead we must find the id of the parent folder of the file
-			$parentId = $this->getDriveFile('')->getId();
-			$folderNames = explode('/', $path);
-			$path = '';
-			// Loop through each folder of this path to get to the file
-			foreach ($folderNames as $name) {
-				// Reconstruct path from beginning
-				if ($path === '') {
-					$path .= $name;
-				} else {
-					$path .= '/'.$name;
-				}
-				if (isset($this->driveFiles[$path])) {
-					$parentId = $this->driveFiles[$path]->getId();
-				} else {
-					$q = "title='" . str_replace("'","\\'", $name) . "' and '" . str_replace("'","\\'", $parentId) . "' in parents and trashed = false";
-					$result = $this->service->files->listFiles(array('q' => $q))->getItems();
-					if (!empty($result)) {
-						// Google Drive allows files with the same name, ownCloud doesn't
-						if (count($result) > 1) {
-							$this->onDuplicateFileDetected($path);
-							return false;
-						} else {
-							$file = current($result);
-							$this->driveFiles[$path] = $file;
-							$parentId = $file->getId();
-						}
-					} else {
-						// Google Docs have no extension in their title, so try without extension
-						$pos = strrpos($path, '.');
-						if ($pos !== false) {
-							$pathWithoutExt = substr($path, 0, $pos);
-							$file = $this->getDriveFile($pathWithoutExt);
-							if ($file && $this->isGoogleDocFile($file)) {
-								// Switch cached Google_Service_Drive_DriveFile to the correct index
-								unset($this->driveFiles[$pathWithoutExt]);
-								$this->driveFiles[$path] = $file;
-								$parentId = $file->getId();
-							} else {
-								return false;
-							}
-						} else {
-							return false;
-						}
-					}
-				}
-			}
-			return $this->driveFiles[$path];
-		}
-	}
-
-	/**
-	 * Set the Google_Service_Drive_DriveFile object in the cache
-	 * @param string $path
-	 * @param \Google_Service_Drive_DriveFile|false $file
-	 */
-	private function setDriveFile($path, $file) {
-		$path = trim($path, '/');
-		$this->driveFiles[$path] = $file;
-		if ($file === false) {
-			// Remove all children
-			$len = strlen($path);
-			foreach ($this->driveFiles as $key => $file) {
-				if (substr($key, 0, $len) === $path) {
-					unset($this->driveFiles[$key]);
-				}
-			}
-		}
-	}
-
-	/**
-	 * Write a log message to inform about duplicate file names
-	 * @param string $path
-	 */
-	private function onDuplicateFileDetected($path) {
-		$about = $this->service->about->get();
-		$user = $about->getName();
-		\OCP\Util::writeLog('files_external',
-			'Ignoring duplicate file name: '.$path.' on Google Drive for Google user: '.$user,
-			\OCP\Util::INFO
-		);
-	}
-
-	/**
-	 * Generate file extension for a Google Doc, choosing Open Document formats for download
-	 * @param string $mimetype
-	 * @return string
-	 */
-	private function getGoogleDocExtension($mimetype) {
-		if ($mimetype === self::DOCUMENT) {
-			return 'odt';
-		} else if ($mimetype === self::SPREADSHEET) {
-			return 'ods';
-		} else if ($mimetype === self::DRAWING) {
-			return 'jpg';
-		} else if ($mimetype === self::PRESENTATION) {
-			// Download as .odp is not available
-			return 'pdf';
-		} else {
-			return '';
-		}
-	}
-
-	/**
-	 * Returns whether the given drive file is a Google Doc file
-	 *
-	 * @param \Google_Service_Drive_DriveFile
-	 *
-	 * @return true if the file is a Google Doc file, false otherwise
-	 */
-	private function isGoogleDocFile($file) {
-		return $this->getGoogleDocExtension($file->getMimeType()) !== '';
-	}
-
-	public function mkdir($path) {
-		if (!$this->is_dir($path)) {
-			$parentFolder = $this->getDriveFile(dirname($path));
-			if ($parentFolder) {
-				$folder = new \Google_Service_Drive_DriveFile();
-				$folder->setTitle(basename($path));
-				$folder->setMimeType(self::FOLDER);
-				$parent = new \Google_Service_Drive_ParentReference();
-				$parent->setId($parentFolder->getId());
-				$folder->setParents(array($parent));
-				$result = $this->service->files->insert($folder);
-				if ($result) {
-					$this->setDriveFile($path, $result);
-				}
-				return (bool)$result;
-			}
-		}
-		return false;
-	}
-
-	public function rmdir($path) {
-		if (!$this->isDeletable($path)) {
-			return false;
-		}
-		if (trim($path, '/') === '') {
-			$dir = $this->opendir($path);
-			if(is_resource($dir)) {
-				while (($file = readdir($dir)) !== false) {
-					if (!\OC\Files\Filesystem::isIgnoredDir($file)) {
-						if (!$this->unlink($path.'/'.$file)) {
-							return false;
-						}
-					}
-				}
-				closedir($dir);
-			}
-			$this->driveFiles = array();
-			return true;
-		} else {
-			return $this->unlink($path);
-		}
-	}
-
-	public function opendir($path) {
-		$folder = $this->getDriveFile($path);
-		if ($folder) {
-			$files = array();
-			$duplicates = array();
-			$pageToken = true;
-			while ($pageToken) {
-				$params = array();
-				if ($pageToken !== true) {
-					$params['pageToken'] = $pageToken;
-				}
-				$params['q'] = "'" . str_replace("'","\\'", $folder->getId()) . "' in parents and trashed = false";
-				$children = $this->service->files->listFiles($params);
-				foreach ($children->getItems() as $child) {
-					$name = $child->getTitle();
-					// Check if this is a Google Doc i.e. no extension in name
-					$extension = $child->getFileExtension();
-					if (empty($extension)) {
-						if ($child->getMimeType() === self::MAP) {
-							continue; // No method known to transfer map files, ignore it
-						} else if ($child->getMimeType() !== self::FOLDER) {
-							$name .= '.'.$this->getGoogleDocExtension($child->getMimeType());
-						}
-					}
-					if ($path === '') {
-						$filepath = $name;
-					} else {
-						$filepath = $path.'/'.$name;
-					}
-					// Google Drive allows files with the same name, ownCloud doesn't
-					// Prevent opendir() from returning any duplicate files
-					$key = array_search($name, $files);
-					if ($key !== false || isset($duplicates[$filepath])) {
-						if (!isset($duplicates[$filepath])) {
-							$duplicates[$filepath] = true;
-							$this->setDriveFile($filepath, false);
-							unset($files[$key]);
-							$this->onDuplicateFileDetected($filepath);
-						}
-					} else {
-						// Cache the Google_Service_Drive_DriveFile for future use
-						$this->setDriveFile($filepath, $child);
-						$files[] = $name;
-					}
-				}
-				$pageToken = $children->getNextPageToken();
-			}
-			return IteratorDirectory::wrap($files);
-		} else {
-			return false;
-		}
-	}
-
-	public function stat($path) {
-		$file = $this->getDriveFile($path);
-		if ($file) {
-			$stat = array();
-			if ($this->filetype($path) === 'dir') {
-				$stat['size'] = 0;
-			} else {
-				// Check if this is a Google Doc
-				if ($this->isGoogleDocFile($file)) {
-					// Return unknown file size
-					$stat['size'] = \OCP\Files\FileInfo::SPACE_UNKNOWN;
-				} else {
-					$stat['size'] = $file->getFileSize();
-				}
-			}
-			$stat['atime'] = strtotime($file->getLastViewedByMeDate());
-			$stat['mtime'] = strtotime($file->getModifiedDate());
-			$stat['ctime'] = strtotime($file->getCreatedDate());
-			return $stat;
-		} else {
-			return false;
-		}
-	}
-
-	public function filetype($path) {
-		if ($path === '') {
-			return 'dir';
-		} else {
-			$file = $this->getDriveFile($path);
-			if ($file) {
-				if ($file->getMimeType() === self::FOLDER) {
-					return 'dir';
-				} else {
-					return 'file';
-				}
-			} else {
-				return false;
-			}
-		}
-	}
-
-	public function isUpdatable($path) {
-		$file = $this->getDriveFile($path);
-		if ($file) {
-			return $file->getEditable();
-		} else {
-			return false;
-		}
-	}
-
-	public function file_exists($path) {
-		return (bool)$this->getDriveFile($path);
-	}
-
-	public function unlink($path) {
-		$file = $this->getDriveFile($path);
-		if ($file) {
-			$result = $this->service->files->trash($file->getId());
-			if ($result) {
-				$this->setDriveFile($path, false);
-			}
-			return (bool)$result;
-		} else {
-			return false;
-		}
-	}
-
-	public function rename($path1, $path2) {
-		$file = $this->getDriveFile($path1);
-		if ($file) {
-			$newFile = $this->getDriveFile($path2);
-			if (dirname($path1) === dirname($path2)) {
-				if ($newFile) {
-					// rename to the name of the target file, could be an office file without extension
-					$file->setTitle($newFile->getTitle());
-				} else {
-					$file->setTitle(basename(($path2)));
-				}
-			} else {
-				// Change file parent
-				$parentFolder2 = $this->getDriveFile(dirname($path2));
-				if ($parentFolder2) {
-					$parent = new \Google_Service_Drive_ParentReference();
-					$parent->setId($parentFolder2->getId());
-					$file->setParents(array($parent));
-				} else {
-					return false;
-				}
-			}
-			// We need to get the object for the existing file with the same
-			// name (if there is one) before we do the patch. If oldfile
-			// exists and is a directory we have to delete it before we
-			// do the rename too.
-			$oldfile = $this->getDriveFile($path2);
-			if ($oldfile && $this->is_dir($path2)) {
-				$this->rmdir($path2);
-				$oldfile = false;
-			}
-			$result = $this->service->files->patch($file->getId(), $file);
-			if ($result) {
-				$this->setDriveFile($path1, false);
-				$this->setDriveFile($path2, $result);
-				if ($oldfile && $newFile) {
-					// only delete if they have a different id (same id can happen for part files)
-					if ($newFile->getId() !== $oldfile->getId()) {
-						$this->service->files->delete($oldfile->getId());
-					}
-				}
-			}
-			return (bool)$result;
-		} else {
-			return false;
-		}
-	}
-
-	public function fopen($path, $mode) {
-		$pos = strrpos($path, '.');
-		if ($pos !== false) {
-			$ext = substr($path, $pos);
-		} else {
-			$ext = '';
-		}
-		switch ($mode) {
-			case 'r':
-			case 'rb':
-				$file = $this->getDriveFile($path);
-				if ($file) {
-					$exportLinks = $file->getExportLinks();
-					$mimetype = $this->getMimeType($path);
-					$downloadUrl = null;
-					if ($exportLinks && isset($exportLinks[$mimetype])) {
-						$downloadUrl = $exportLinks[$mimetype];
-					} else {
-						$downloadUrl = $file->getDownloadUrl();
-					}
-					if (isset($downloadUrl)) {
-						$request = new \Google_Http_Request($downloadUrl, 'GET', null, null);
-						$httpRequest = $this->client->getAuth()->sign($request);
-						// the library's service doesn't support streaming, so we use Guzzle instead
-						$client = \OC::$server->getHTTPClientService()->newClient();
-						try {
-							$response = $client->get($downloadUrl, [
-								'headers' => $httpRequest->getRequestHeaders(),
-								'stream' => true,
-								'verify' => realpath(__DIR__ . '/../../../3rdparty/google-api-php-client/src/Google/IO/cacerts.pem'),
-							]);
-						} catch (RequestException $e) {
-							if(!is_null($e->getResponse())) {
-								if ($e->getResponse()->getStatusCode() === 404) {
-									return false;
-								} else {
-									throw $e;
-								}
-							} else {
-								throw $e;
-							}
-						}
-
-						$handle = $response->getBody();
-						return RetryWrapper::wrap($handle);
-					}
-				}
-				return false;
-			case 'w':
-			case 'wb':
-			case 'a':
-			case 'ab':
-			case 'r+':
-			case 'w+':
-			case 'wb+':
-			case 'a+':
-			case 'x':
-			case 'x+':
-			case 'c':
-			case 'c+':
-				$tmpFile = \OCP\Files::tmpFile($ext);
-				if ($this->file_exists($path)) {
-					$source = $this->fopen($path, 'rb');
-					file_put_contents($tmpFile, $source);
-				}
-				$handle = fopen($tmpFile, $mode);
-				return CallbackWrapper::wrap($handle, null, null, function () use ($path, $tmpFile) {
-					$this->writeBack($tmpFile, $path);
-				});
-		}
-	}
-
-	public function writeBack($tmpFile, $path) {
-		$parentFolder = $this->getDriveFile(dirname($path));
-		if ($parentFolder) {
-			$mimetype = \OC::$server->getMimeTypeDetector()->detect($tmpFile);
-			$params = array(
-				'mimeType' => $mimetype,
-				'uploadType' => 'media'
-			);
-			$result = false;
-
-			$chunkSizeBytes = 10 * 1024 * 1024;
-
-			$useChunking = false;
-			$size = filesize($tmpFile);
-			if ($size > $chunkSizeBytes) {
-				$useChunking = true;
-			} else {
-				$params['data'] = file_get_contents($tmpFile);
-			}
-
-			if ($this->file_exists($path)) {
-				$file = $this->getDriveFile($path);
-				$this->client->setDefer($useChunking);
-				$request = $this->service->files->update($file->getId(), $file, $params);
-			} else {
-				$file = new \Google_Service_Drive_DriveFile();
-				$file->setTitle(basename($path));
-				$file->setMimeType($mimetype);
-				$parent = new \Google_Service_Drive_ParentReference();
-				$parent->setId($parentFolder->getId());
-				$file->setParents(array($parent));
-				$this->client->setDefer($useChunking);
-				$request = $this->service->files->insert($file, $params);
-			}
-
-			if ($useChunking) {
-				// Create a media file upload to represent our upload process.
-				$media = new \Google_Http_MediaFileUpload(
-					$this->client,
-					$request,
-					'text/plain',
-					null,
-					true,
-					$chunkSizeBytes
-				);
-				$media->setFileSize($size);
-
-				// Upload the various chunks. $status will be false until the process is
-				// complete.
-				$status = false;
-				$handle = fopen($tmpFile, 'rb');
-				while (!$status && !feof($handle)) {
-					$chunk = fread($handle, $chunkSizeBytes);
-					$status = $media->nextChunk($chunk);
-				}
-
-				// The final value of $status will be the data from the API for the object
-				// that has been uploaded.
-				$result = false;
-				if ($status !== false) {
-					$result = $status;
-				}
-
-				fclose($handle);
-			} else {
-				$result = $request;
-			}
-
-			// Reset to the client to execute requests immediately in the future.
-			$this->client->setDefer(false);
-
-			if ($result) {
-				$this->setDriveFile($path, $result);
-			}
-		}
-	}
-
-	public function getMimeType($path) {
-		$file = $this->getDriveFile($path);
-		if ($file) {
-			$mimetype = $file->getMimeType();
-			// Convert Google Doc mimetypes, choosing Open Document formats for download
-			if ($mimetype === self::FOLDER) {
-				return 'httpd/unix-directory';
-			} else if ($mimetype === self::DOCUMENT) {
-				return 'application/vnd.oasis.opendocument.text';
-			} else if ($mimetype === self::SPREADSHEET) {
-				return 'application/x-vnd.oasis.opendocument.spreadsheet';
-			} else if ($mimetype === self::DRAWING) {
-				return 'image/jpeg';
-			} else if ($mimetype === self::PRESENTATION) {
-				// Download as .odp is not available
-				return 'application/pdf';
-			} else {
-				// use extension-based detection, could be an encrypted file
-				return parent::getMimeType($path);
-			}
-		} else {
-			return false;
-		}
-	}
-
-	public function free_space($path) {
-		$about = $this->service->about->get();
-		return $about->getQuotaBytesTotal() - $about->getQuotaBytesUsed();
-	}
-
-	public function touch($path, $mtime = null) {
-		$file = $this->getDriveFile($path);
-		$result = false;
-		if ($file) {
-			if (isset($mtime)) {
-				// This is just RFC3339, but frustratingly, GDrive's API *requires*
-				// the fractions portion be present, while no handy PHP constant
-				// for RFC3339 or ISO8601 includes it. So we do it ourselves.
-				$file->setModifiedDate(date('Y-m-d\TH:i:s.uP', $mtime));
-				$result = $this->service->files->patch($file->getId(), $file, array(
-					'setModifiedDate' => true,
-				));
-			} else {
-				$result = $this->service->files->touch($file->getId());
-			}
-		} else {
-			$parentFolder = $this->getDriveFile(dirname($path));
-			if ($parentFolder) {
-				$file = new \Google_Service_Drive_DriveFile();
-				$file->setTitle(basename($path));
-				$parent = new \Google_Service_Drive_ParentReference();
-				$parent->setId($parentFolder->getId());
-				$file->setParents(array($parent));
-				$result = $this->service->files->insert($file);
-			}
-		}
-		if ($result) {
-			$this->setDriveFile($path, $result);
-		}
-		return (bool)$result;
-	}
-
-	public function test() {
-		if ($this->free_space('')) {
-			return true;
-		}
-		return false;
-	}
-
-	public function hasUpdated($path, $time) {
-		$appConfig = \OC::$server->getAppConfig();
-		if ($this->is_file($path)) {
-			return parent::hasUpdated($path, $time);
-		} else {
-			// Google Drive doesn't change modified times of folders when files inside are updated
-			// Instead we use the Changes API to see if folders have been updated, and it's a pain
-			$folder = $this->getDriveFile($path);
-			if ($folder) {
-				$result = false;
-				$folderId = $folder->getId();
-				$startChangeId = $appConfig->getValue('files_external', $this->getId().'cId');
-				$params = array(
-					'includeDeleted' => true,
-					'includeSubscribed' => true,
-				);
-				if (isset($startChangeId)) {
-					$startChangeId = (int)$startChangeId;
-					$largestChangeId = $startChangeId;
-					$params['startChangeId'] = $startChangeId + 1;
-				} else {
-					$largestChangeId = 0;
-				}
-				$pageToken = true;
-				while ($pageToken) {
-					if ($pageToken !== true) {
-						$params['pageToken'] = $pageToken;
-					}
-					$changes = $this->service->changes->listChanges($params);
-					if ($largestChangeId === 0 || $largestChangeId === $startChangeId) {
-						$largestChangeId = $changes->getLargestChangeId();
-					}
-					if (isset($startChangeId)) {
-						// Check if a file in this folder has been updated
-						// There is no way to filter by folder at the API level...
-						foreach ($changes->getItems() as $change) {
-							$file = $change->getFile();
-							if ($file) {
-								foreach ($file->getParents() as $parent) {
-									if ($parent->getId() === $folderId) {
-										$result = true;
-									// Check if there are changes in different folders
-									} else if ($change->getId() <= $largestChangeId) {
-										// Decrement id so this change is fetched when called again
-										$largestChangeId = $change->getId();
-										$largestChangeId--;
-									}
-								}
-							}
-						}
-						$pageToken = $changes->getNextPageToken();
-					} else {
-						// Assuming the initial scan just occurred and changes are negligible
-						break;
-					}
-				}
-				$appConfig->setValue('files_external', $this->getId().'cId', $largestChangeId);
-				return $result;
-			}
-		}
-		return false;
-	}
-
-	/**
-	 * check if curl is installed
-	 */
-	public static function checkDependencies() {
-		return true;
-	}
+    private $client;
+    private $id;
+    private $service;
+    private $driveFiles;
+
+    // Google Doc mimetypes
+    const FOLDER = 'application/vnd.google-apps.folder';
+    const DOCUMENT = 'application/vnd.google-apps.document';
+    const SPREADSHEET = 'application/vnd.google-apps.spreadsheet';
+    const DRAWING = 'application/vnd.google-apps.drawing';
+    const PRESENTATION = 'application/vnd.google-apps.presentation';
+    const MAP = 'application/vnd.google-apps.map';
+
+    public function __construct($params) {
+        if (isset($params['configured']) && $params['configured'] === 'true'
+            && isset($params['client_id']) && isset($params['client_secret'])
+            && isset($params['token'])
+        ) {
+            $this->client = new \Google_Client();
+            $this->client->setClientId($params['client_id']);
+            $this->client->setClientSecret($params['client_secret']);
+            $this->client->setScopes(array('https://www.googleapis.com/auth/drive'));
+            $this->client->setAccessToken($params['token']);
+            // if curl isn't available we're likely to run into
+            // https://github.com/google/google-api-php-client/issues/59
+            // - disable gzip to avoid it.
+            if (!function_exists('curl_version') || !function_exists('curl_exec')) {
+                $this->client->setClassConfig("Google_Http_Request", "disable_gzip", true);
+            }
+            // note: API connection is lazy
+            $this->service = new \Google_Service_Drive($this->client);
+            $token = json_decode($params['token'], true);
+            $this->id = 'google::'.substr($params['client_id'], 0, 30).$token['created'];
+        } else {
+            throw new \Exception('Creating Google storage failed');
+        }
+    }
+
+    public function getId() {
+        return $this->id;
+    }
+
+    /**
+     * Get the Google_Service_Drive_DriveFile object for the specified path.
+     * Returns false on failure.
+     * @param string $path
+     * @return \Google_Service_Drive_DriveFile|false
+     */
+    private function getDriveFile($path) {
+        // Remove leading and trailing slashes
+        $path = trim($path, '/');
+        if ($path === '.') {
+            $path = '';
+        }
+        if (isset($this->driveFiles[$path])) {
+            return $this->driveFiles[$path];
+        } else if ($path === '') {
+            $root = $this->service->files->get('root');
+            $this->driveFiles[$path] = $root;
+            return $root;
+        } else {
+            // Google Drive SDK does not have methods for retrieving files by path
+            // Instead we must find the id of the parent folder of the file
+            $parentId = $this->getDriveFile('')->getId();
+            $folderNames = explode('/', $path);
+            $path = '';
+            // Loop through each folder of this path to get to the file
+            foreach ($folderNames as $name) {
+                // Reconstruct path from beginning
+                if ($path === '') {
+                    $path .= $name;
+                } else {
+                    $path .= '/'.$name;
+                }
+                if (isset($this->driveFiles[$path])) {
+                    $parentId = $this->driveFiles[$path]->getId();
+                } else {
+                    $q = "title='" . str_replace("'","\\'", $name) . "' and '" . str_replace("'","\\'", $parentId) . "' in parents and trashed = false";
+                    $result = $this->service->files->listFiles(array('q' => $q))->getItems();
+                    if (!empty($result)) {
+                        // Google Drive allows files with the same name, ownCloud doesn't
+                        if (count($result) > 1) {
+                            $this->onDuplicateFileDetected($path);
+                            return false;
+                        } else {
+                            $file = current($result);
+                            $this->driveFiles[$path] = $file;
+                            $parentId = $file->getId();
+                        }
+                    } else {
+                        // Google Docs have no extension in their title, so try without extension
+                        $pos = strrpos($path, '.');
+                        if ($pos !== false) {
+                            $pathWithoutExt = substr($path, 0, $pos);
+                            $file = $this->getDriveFile($pathWithoutExt);
+                            if ($file && $this->isGoogleDocFile($file)) {
+                                // Switch cached Google_Service_Drive_DriveFile to the correct index
+                                unset($this->driveFiles[$pathWithoutExt]);
+                                $this->driveFiles[$path] = $file;
+                                $parentId = $file->getId();
+                            } else {
+                                return false;
+                            }
+                        } else {
+                            return false;
+                        }
+                    }
+                }
+            }
+            return $this->driveFiles[$path];
+        }
+    }
+
+    /**
+     * Set the Google_Service_Drive_DriveFile object in the cache
+     * @param string $path
+     * @param \Google_Service_Drive_DriveFile|false $file
+     */
+    private function setDriveFile($path, $file) {
+        $path = trim($path, '/');
+        $this->driveFiles[$path] = $file;
+        if ($file === false) {
+            // Remove all children
+            $len = strlen($path);
+            foreach ($this->driveFiles as $key => $file) {
+                if (substr($key, 0, $len) === $path) {
+                    unset($this->driveFiles[$key]);
+                }
+            }
+        }
+    }
+
+    /**
+     * Write a log message to inform about duplicate file names
+     * @param string $path
+     */
+    private function onDuplicateFileDetected($path) {
+        $about = $this->service->about->get();
+        $user = $about->getName();
+        \OCP\Util::writeLog('files_external',
+            'Ignoring duplicate file name: '.$path.' on Google Drive for Google user: '.$user,
+            \OCP\Util::INFO
+        );
+    }
+
+    /**
+     * Generate file extension for a Google Doc, choosing Open Document formats for download
+     * @param string $mimetype
+     * @return string
+     */
+    private function getGoogleDocExtension($mimetype) {
+        if ($mimetype === self::DOCUMENT) {
+            return 'odt';
+        } else if ($mimetype === self::SPREADSHEET) {
+            return 'ods';
+        } else if ($mimetype === self::DRAWING) {
+            return 'jpg';
+        } else if ($mimetype === self::PRESENTATION) {
+            // Download as .odp is not available
+            return 'pdf';
+        } else {
+            return '';
+        }
+    }
+
+    /**
+     * Returns whether the given drive file is a Google Doc file
+     *
+     * @param \Google_Service_Drive_DriveFile
+     *
+     * @return true if the file is a Google Doc file, false otherwise
+     */
+    private function isGoogleDocFile($file) {
+        return $this->getGoogleDocExtension($file->getMimeType()) !== '';
+    }
+
+    public function mkdir($path) {
+        if (!$this->is_dir($path)) {
+            $parentFolder = $this->getDriveFile(dirname($path));
+            if ($parentFolder) {
+                $folder = new \Google_Service_Drive_DriveFile();
+                $folder->setTitle(basename($path));
+                $folder->setMimeType(self::FOLDER);
+                $parent = new \Google_Service_Drive_ParentReference();
+                $parent->setId($parentFolder->getId());
+                $folder->setParents(array($parent));
+                $result = $this->service->files->insert($folder);
+                if ($result) {
+                    $this->setDriveFile($path, $result);
+                }
+                return (bool)$result;
+            }
+        }
+        return false;
+    }
+
+    public function rmdir($path) {
+        if (!$this->isDeletable($path)) {
+            return false;
+        }
+        if (trim($path, '/') === '') {
+            $dir = $this->opendir($path);
+            if(is_resource($dir)) {
+                while (($file = readdir($dir)) !== false) {
+                    if (!\OC\Files\Filesystem::isIgnoredDir($file)) {
+                        if (!$this->unlink($path.'/'.$file)) {
+                            return false;
+                        }
+                    }
+                }
+                closedir($dir);
+            }
+            $this->driveFiles = array();
+            return true;
+        } else {
+            return $this->unlink($path);
+        }
+    }
+
+    public function opendir($path) {
+        $folder = $this->getDriveFile($path);
+        if ($folder) {
+            $files = array();
+            $duplicates = array();
+            $pageToken = true;
+            while ($pageToken) {
+                $params = array();
+                if ($pageToken !== true) {
+                    $params['pageToken'] = $pageToken;
+                }
+                $params['q'] = "'" . str_replace("'","\\'", $folder->getId()) . "' in parents and trashed = false";
+                $children = $this->service->files->listFiles($params);
+                foreach ($children->getItems() as $child) {
+                    $name = $child->getTitle();
+                    // Check if this is a Google Doc i.e. no extension in name
+                    $extension = $child->getFileExtension();
+                    if (empty($extension)) {
+                        if ($child->getMimeType() === self::MAP) {
+                            continue; // No method known to transfer map files, ignore it
+                        } else if ($child->getMimeType() !== self::FOLDER) {
+                            $name .= '.'.$this->getGoogleDocExtension($child->getMimeType());
+                        }
+                    }
+                    if ($path === '') {
+                        $filepath = $name;
+                    } else {
+                        $filepath = $path.'/'.$name;
+                    }
+                    // Google Drive allows files with the same name, ownCloud doesn't
+                    // Prevent opendir() from returning any duplicate files
+                    $key = array_search($name, $files);
+                    if ($key !== false || isset($duplicates[$filepath])) {
+                        if (!isset($duplicates[$filepath])) {
+                            $duplicates[$filepath] = true;
+                            $this->setDriveFile($filepath, false);
+                            unset($files[$key]);
+                            $this->onDuplicateFileDetected($filepath);
+                        }
+                    } else {
+                        // Cache the Google_Service_Drive_DriveFile for future use
+                        $this->setDriveFile($filepath, $child);
+                        $files[] = $name;
+                    }
+                }
+                $pageToken = $children->getNextPageToken();
+            }
+            return IteratorDirectory::wrap($files);
+        } else {
+            return false;
+        }
+    }
+
+    public function stat($path) {
+        $file = $this->getDriveFile($path);
+        if ($file) {
+            $stat = array();
+            if ($this->filetype($path) === 'dir') {
+                $stat['size'] = 0;
+            } else {
+                // Check if this is a Google Doc
+                if ($this->isGoogleDocFile($file)) {
+                    // Return unknown file size
+                    $stat['size'] = \OCP\Files\FileInfo::SPACE_UNKNOWN;
+                } else {
+                    $stat['size'] = $file->getFileSize();
+                }
+            }
+            $stat['atime'] = strtotime($file->getLastViewedByMeDate());
+            $stat['mtime'] = strtotime($file->getModifiedDate());
+            $stat['ctime'] = strtotime($file->getCreatedDate());
+            return $stat;
+        } else {
+            return false;
+        }
+    }
+
+    public function filetype($path) {
+        if ($path === '') {
+            return 'dir';
+        } else {
+            $file = $this->getDriveFile($path);
+            if ($file) {
+                if ($file->getMimeType() === self::FOLDER) {
+                    return 'dir';
+                } else {
+                    return 'file';
+                }
+            } else {
+                return false;
+            }
+        }
+    }
+
+    public function isUpdatable($path) {
+        $file = $this->getDriveFile($path);
+        if ($file) {
+            return $file->getEditable();
+        } else {
+            return false;
+        }
+    }
+
+    public function file_exists($path) {
+        return (bool)$this->getDriveFile($path);
+    }
+
+    public function unlink($path) {
+        $file = $this->getDriveFile($path);
+        if ($file) {
+            $result = $this->service->files->trash($file->getId());
+            if ($result) {
+                $this->setDriveFile($path, false);
+            }
+            return (bool)$result;
+        } else {
+            return false;
+        }
+    }
+
+    public function rename($path1, $path2) {
+        $file = $this->getDriveFile($path1);
+        if ($file) {
+            $newFile = $this->getDriveFile($path2);
+            if (dirname($path1) === dirname($path2)) {
+                if ($newFile) {
+                    // rename to the name of the target file, could be an office file without extension
+                    $file->setTitle($newFile->getTitle());
+                } else {
+                    $file->setTitle(basename(($path2)));
+                }
+            } else {
+                // Change file parent
+                $parentFolder2 = $this->getDriveFile(dirname($path2));
+                if ($parentFolder2) {
+                    $parent = new \Google_Service_Drive_ParentReference();
+                    $parent->setId($parentFolder2->getId());
+                    $file->setParents(array($parent));
+                } else {
+                    return false;
+                }
+            }
+            // We need to get the object for the existing file with the same
+            // name (if there is one) before we do the patch. If oldfile
+            // exists and is a directory we have to delete it before we
+            // do the rename too.
+            $oldfile = $this->getDriveFile($path2);
+            if ($oldfile && $this->is_dir($path2)) {
+                $this->rmdir($path2);
+                $oldfile = false;
+            }
+            $result = $this->service->files->patch($file->getId(), $file);
+            if ($result) {
+                $this->setDriveFile($path1, false);
+                $this->setDriveFile($path2, $result);
+                if ($oldfile && $newFile) {
+                    // only delete if they have a different id (same id can happen for part files)
+                    if ($newFile->getId() !== $oldfile->getId()) {
+                        $this->service->files->delete($oldfile->getId());
+                    }
+                }
+            }
+            return (bool)$result;
+        } else {
+            return false;
+        }
+    }
+
+    public function fopen($path, $mode) {
+        $pos = strrpos($path, '.');
+        if ($pos !== false) {
+            $ext = substr($path, $pos);
+        } else {
+            $ext = '';
+        }
+        switch ($mode) {
+            case 'r':
+            case 'rb':
+                $file = $this->getDriveFile($path);
+                if ($file) {
+                    $exportLinks = $file->getExportLinks();
+                    $mimetype = $this->getMimeType($path);
+                    $downloadUrl = null;
+                    if ($exportLinks && isset($exportLinks[$mimetype])) {
+                        $downloadUrl = $exportLinks[$mimetype];
+                    } else {
+                        $downloadUrl = $file->getDownloadUrl();
+                    }
+                    if (isset($downloadUrl)) {
+                        $request = new \Google_Http_Request($downloadUrl, 'GET', null, null);
+                        $httpRequest = $this->client->getAuth()->sign($request);
+                        // the library's service doesn't support streaming, so we use Guzzle instead
+                        $client = \OC::$server->getHTTPClientService()->newClient();
+                        try {
+                            $response = $client->get($downloadUrl, [
+                                'headers' => $httpRequest->getRequestHeaders(),
+                                'stream' => true,
+                                'verify' => realpath(__DIR__ . '/../../../3rdparty/google-api-php-client/src/Google/IO/cacerts.pem'),
+                            ]);
+                        } catch (RequestException $e) {
+                            if(!is_null($e->getResponse())) {
+                                if ($e->getResponse()->getStatusCode() === 404) {
+                                    return false;
+                                } else {
+                                    throw $e;
+                                }
+                            } else {
+                                throw $e;
+                            }
+                        }
+
+                        $handle = $response->getBody();
+                        return RetryWrapper::wrap($handle);
+                    }
+                }
+                return false;
+            case 'w':
+            case 'wb':
+            case 'a':
+            case 'ab':
+            case 'r+':
+            case 'w+':
+            case 'wb+':
+            case 'a+':
+            case 'x':
+            case 'x+':
+            case 'c':
+            case 'c+':
+                $tmpFile = \OCP\Files::tmpFile($ext);
+                if ($this->file_exists($path)) {
+                    $source = $this->fopen($path, 'rb');
+                    file_put_contents($tmpFile, $source);
+                }
+                $handle = fopen($tmpFile, $mode);
+                return CallbackWrapper::wrap($handle, null, null, function () use ($path, $tmpFile) {
+                    $this->writeBack($tmpFile, $path);
+                });
+        }
+    }
+
+    public function writeBack($tmpFile, $path) {
+        $parentFolder = $this->getDriveFile(dirname($path));
+        if ($parentFolder) {
+            $mimetype = \OC::$server->getMimeTypeDetector()->detect($tmpFile);
+            $params = array(
+                'mimeType' => $mimetype,
+                'uploadType' => 'media'
+            );
+            $result = false;
+
+            $chunkSizeBytes = 10 * 1024 * 1024;
+
+            $useChunking = false;
+            $size = filesize($tmpFile);
+            if ($size > $chunkSizeBytes) {
+                $useChunking = true;
+            } else {
+                $params['data'] = file_get_contents($tmpFile);
+            }
+
+            if ($this->file_exists($path)) {
+                $file = $this->getDriveFile($path);
+                $this->client->setDefer($useChunking);
+                $request = $this->service->files->update($file->getId(), $file, $params);
+            } else {
+                $file = new \Google_Service_Drive_DriveFile();
+                $file->setTitle(basename($path));
+                $file->setMimeType($mimetype);
+                $parent = new \Google_Service_Drive_ParentReference();
+                $parent->setId($parentFolder->getId());
+                $file->setParents(array($parent));
+                $this->client->setDefer($useChunking);
+                $request = $this->service->files->insert($file, $params);
+            }
+
+            if ($useChunking) {
+                // Create a media file upload to represent our upload process.
+                $media = new \Google_Http_MediaFileUpload(
+                    $this->client,
+                    $request,
+                    'text/plain',
+                    null,
+                    true,
+                    $chunkSizeBytes
+                );
+                $media->setFileSize($size);
+
+                // Upload the various chunks. $status will be false until the process is
+                // complete.
+                $status = false;
+                $handle = fopen($tmpFile, 'rb');
+                while (!$status && !feof($handle)) {
+                    $chunk = fread($handle, $chunkSizeBytes);
+                    $status = $media->nextChunk($chunk);
+                }
+
+                // The final value of $status will be the data from the API for the object
+                // that has been uploaded.
+                $result = false;
+                if ($status !== false) {
+                    $result = $status;
+                }
+
+                fclose($handle);
+            } else {
+                $result = $request;
+            }
+
+            // Reset to the client to execute requests immediately in the future.
+            $this->client->setDefer(false);
+
+            if ($result) {
+                $this->setDriveFile($path, $result);
+            }
+        }
+    }
+
+    public function getMimeType($path) {
+        $file = $this->getDriveFile($path);
+        if ($file) {
+            $mimetype = $file->getMimeType();
+            // Convert Google Doc mimetypes, choosing Open Document formats for download
+            if ($mimetype === self::FOLDER) {
+                return 'httpd/unix-directory';
+            } else if ($mimetype === self::DOCUMENT) {
+                return 'application/vnd.oasis.opendocument.text';
+            } else if ($mimetype === self::SPREADSHEET) {
+                return 'application/x-vnd.oasis.opendocument.spreadsheet';
+            } else if ($mimetype === self::DRAWING) {
+                return 'image/jpeg';
+            } else if ($mimetype === self::PRESENTATION) {
+                // Download as .odp is not available
+                return 'application/pdf';
+            } else {
+                // use extension-based detection, could be an encrypted file
+                return parent::getMimeType($path);
+            }
+        } else {
+            return false;
+        }
+    }
+
+    public function free_space($path) {
+        $about = $this->service->about->get();
+        return $about->getQuotaBytesTotal() - $about->getQuotaBytesUsed();
+    }
+
+    public function touch($path, $mtime = null) {
+        $file = $this->getDriveFile($path);
+        $result = false;
+        if ($file) {
+            if (isset($mtime)) {
+                // This is just RFC3339, but frustratingly, GDrive's API *requires*
+                // the fractions portion be present, while no handy PHP constant
+                // for RFC3339 or ISO8601 includes it. So we do it ourselves.
+                $file->setModifiedDate(date('Y-m-d\TH:i:s.uP', $mtime));
+                $result = $this->service->files->patch($file->getId(), $file, array(
+                    'setModifiedDate' => true,
+                ));
+            } else {
+                $result = $this->service->files->touch($file->getId());
+            }
+        } else {
+            $parentFolder = $this->getDriveFile(dirname($path));
+            if ($parentFolder) {
+                $file = new \Google_Service_Drive_DriveFile();
+                $file->setTitle(basename($path));
+                $parent = new \Google_Service_Drive_ParentReference();
+                $parent->setId($parentFolder->getId());
+                $file->setParents(array($parent));
+                $result = $this->service->files->insert($file);
+            }
+        }
+        if ($result) {
+            $this->setDriveFile($path, $result);
+        }
+        return (bool)$result;
+    }
+
+    public function test() {
+        if ($this->free_space('')) {
+            return true;
+        }
+        return false;
+    }
+
+    public function hasUpdated($path, $time) {
+        $appConfig = \OC::$server->getAppConfig();
+        if ($this->is_file($path)) {
+            return parent::hasUpdated($path, $time);
+        } else {
+            // Google Drive doesn't change modified times of folders when files inside are updated
+            // Instead we use the Changes API to see if folders have been updated, and it's a pain
+            $folder = $this->getDriveFile($path);
+            if ($folder) {
+                $result = false;
+                $folderId = $folder->getId();
+                $startChangeId = $appConfig->getValue('files_external', $this->getId().'cId');
+                $params = array(
+                    'includeDeleted' => true,
+                    'includeSubscribed' => true,
+                );
+                if (isset($startChangeId)) {
+                    $startChangeId = (int)$startChangeId;
+                    $largestChangeId = $startChangeId;
+                    $params['startChangeId'] = $startChangeId + 1;
+                } else {
+                    $largestChangeId = 0;
+                }
+                $pageToken = true;
+                while ($pageToken) {
+                    if ($pageToken !== true) {
+                        $params['pageToken'] = $pageToken;
+                    }
+                    $changes = $this->service->changes->listChanges($params);
+                    if ($largestChangeId === 0 || $largestChangeId === $startChangeId) {
+                        $largestChangeId = $changes->getLargestChangeId();
+                    }
+                    if (isset($startChangeId)) {
+                        // Check if a file in this folder has been updated
+                        // There is no way to filter by folder at the API level...
+                        foreach ($changes->getItems() as $change) {
+                            $file = $change->getFile();
+                            if ($file) {
+                                foreach ($file->getParents() as $parent) {
+                                    if ($parent->getId() === $folderId) {
+                                        $result = true;
+                                    // Check if there are changes in different folders
+                                    } else if ($change->getId() <= $largestChangeId) {
+                                        // Decrement id so this change is fetched when called again
+                                        $largestChangeId = $change->getId();
+                                        $largestChangeId--;
+                                    }
+                                }
+                            }
+                        }
+                        $pageToken = $changes->getNextPageToken();
+                    } else {
+                        // Assuming the initial scan just occurred and changes are negligible
+                        break;
+                    }
+                }
+                $appConfig->setValue('files_external', $this->getId().'cId', $largestChangeId);
+                return $result;
+            }
+        }
+        return false;
+    }
+
+    /**
+     * check if curl is installed
+     */
+    public static function checkDependencies() {
+        return true;
+    }
 
 }

Spacing +12 added lines, -12 removed lines

@@ -123,7 +123,7 @@ 
 				if (isset($this->driveFiles[$path])) {
 					$parentId = $this->driveFiles[$path]->getId();
 				} else {
-					$q = "title='" . str_replace("'","\\'", $name) . "' and '" . str_replace("'","\\'", $parentId) . "' in parents and trashed = false";
+					$q = "title='".str_replace("'", "\\'", $name)."' and '".str_replace("'", "\\'", $parentId)."' in parents and trashed = false";
 					$result = $this->service->files->listFiles(array('q' => $q))->getItems();
 					if (!empty($result)) {
 						// Google Drive allows files with the same name, ownCloud doesn't
@@ -236,7 +236,7 @@ 
 				if ($result) {
 					$this->setDriveFile($path, $result);
 				}
-				return (bool)$result;
+				return (bool) $result;
 			}
 		}
 		return false;
@@ -248,7 +248,7 @@ 
 		}
 		if (trim($path, '/') === '') {
 			$dir = $this->opendir($path);
-			if(is_resource($dir)) {
+			if (is_resource($dir)) {
 				while (($file = readdir($dir)) !== false) {
 					if (!\OC\Files\Filesystem::isIgnoredDir($file)) {
 						if (!$this->unlink($path.'/'.$file)) {
@@ -276,7 +276,7 @@ 
 				if ($pageToken !== true) {
 					$params['pageToken'] = $pageToken;
 				}
-				$params['q'] = "'" . str_replace("'","\\'", $folder->getId()) . "' in parents and trashed = false";
+				$params['q'] = "'".str_replace("'", "\\'", $folder->getId())."' in parents and trashed = false";
 				$children = $this->service->files->listFiles($params);
 				foreach ($children->getItems() as $child) {
 					$name = $child->getTitle();
@@ -369,7 +369,7 @@ 
 	}
 
 	public function file_exists($path) {
-		return (bool)$this->getDriveFile($path);
+		return (bool) $this->getDriveFile($path);
 	}
 
 	public function unlink($path) {
@@ -379,7 +379,7 @@ 
 			if ($result) {
 				$this->setDriveFile($path, false);
 			}
-			return (bool)$result;
+			return (bool) $result;
 		} else {
 			return false;
 		}
@@ -427,7 +427,7 @@ 
 					}
 				}
 			}
-			return (bool)$result;
+			return (bool) $result;
 		} else {
 			return false;
 		}
@@ -462,10 +462,10 @@ 
 							$response = $client->get($downloadUrl, [
 								'headers' => $httpRequest->getRequestHeaders(),
 								'stream' => true,
-								'verify' => realpath(__DIR__ . '/../../../3rdparty/google-api-php-client/src/Google/IO/cacerts.pem'),
+								'verify' => realpath(__DIR__.'/../../../3rdparty/google-api-php-client/src/Google/IO/cacerts.pem'),
 							]);
 						} catch (RequestException $e) {
-							if(!is_null($e->getResponse())) {
+							if (!is_null($e->getResponse())) {
 								if ($e->getResponse()->getStatusCode() === 404) {
 									return false;
 								} else {
@@ -499,7 +499,7 @@ 
 					file_put_contents($tmpFile, $source);
 				}
 				$handle = fopen($tmpFile, $mode);
-				return CallbackWrapper::wrap($handle, null, null, function () use ($path, $tmpFile) {
+				return CallbackWrapper::wrap($handle, null, null, function() use ($path, $tmpFile) {
 					$this->writeBack($tmpFile, $path);
 				});
 		}
@@ -641,7 +641,7 @@ 
 		if ($result) {
 			$this->setDriveFile($path, $result);
 		}
-		return (bool)$result;
+		return (bool) $result;
 	}
 
 	public function test() {
@@ -668,7 +668,7 @@ 
 					'includeSubscribed' => true,
 				);
 				if (isset($startChangeId)) {
-					$startChangeId = (int)$startChangeId;
+					$startChangeId = (int) $startChangeId;
 					$largestChangeId = $startChangeId;
 					$params['startChangeId'] = $startChangeId + 1;
 				} else {

lib/private/Archive/TAR.php

Doc Comments +1 added lines

@@ -370,6 +370,7 @@
 
 	/**
 	 * write back temporary files
+	 * @param string $path
 	 */
 	function writeBack($tmpFile, $path) {
 		$this->addFile($path, $tmpFile);

Indentation +331 added lines, -331 removed lines

@@ -36,355 +36,355 @@
 use Icewind\Streams\CallbackWrapper;
 
 class TAR extends Archive {
-	const PLAIN = 0;
-	const GZIP = 1;
-	const BZIP = 2;
+    const PLAIN = 0;
+    const GZIP = 1;
+    const BZIP = 2;
 
-	private $fileList;
-	private $cachedHeaders;
+    private $fileList;
+    private $cachedHeaders;
 
-	/**
-	 * @var \Archive_Tar tar
-	 */
-	private $tar = null;
-	private $path;
+    /**
+     * @var \Archive_Tar tar
+     */
+    private $tar = null;
+    private $path;
 
-	/**
-	 * @param string $source
-	 */
-	function __construct($source) {
-		$types = array(null, 'gz', 'bz2');
-		$this->path = $source;
-		$this->tar = new \Archive_Tar($source, $types[self::getTarType($source)]);
-	}
+    /**
+     * @param string $source
+     */
+    function __construct($source) {
+        $types = array(null, 'gz', 'bz2');
+        $this->path = $source;
+        $this->tar = new \Archive_Tar($source, $types[self::getTarType($source)]);
+    }
 
-	/**
-	 * try to detect the type of tar compression
-	 *
-	 * @param string $file
-	 * @return integer
-	 */
-	static public function getTarType($file) {
-		if (strpos($file, '.')) {
-			$extension = substr($file, strrpos($file, '.'));
-			switch ($extension) {
-				case '.gz':
-				case '.tgz':
-					return self::GZIP;
-				case '.bz':
-				case '.bz2':
-					return self::BZIP;
-				case '.tar':
-					return self::PLAIN;
-				default:
-					return self::PLAIN;
-			}
-		} else {
-			return self::PLAIN;
-		}
-	}
+    /**
+     * try to detect the type of tar compression
+     *
+     * @param string $file
+     * @return integer
+     */
+    static public function getTarType($file) {
+        if (strpos($file, '.')) {
+            $extension = substr($file, strrpos($file, '.'));
+            switch ($extension) {
+                case '.gz':
+                case '.tgz':
+                    return self::GZIP;
+                case '.bz':
+                case '.bz2':
+                    return self::BZIP;
+                case '.tar':
+                    return self::PLAIN;
+                default:
+                    return self::PLAIN;
+            }
+        } else {
+            return self::PLAIN;
+        }
+    }
 
-	/**
-	 * add an empty folder to the archive
-	 *
-	 * @param string $path
-	 * @return bool
-	 */
-	function addFolder($path) {
-		$tmpBase = \OC::$server->getTempManager()->getTemporaryFolder();
-		if (substr($path, -1, 1) != '/') {
-			$path .= '/';
-		}
-		if ($this->fileExists($path)) {
-			return false;
-		}
-		$parts = explode('/', $path);
-		$folder = $tmpBase;
-		foreach ($parts as $part) {
-			$folder .= '/' . $part;
-			if (!is_dir($folder)) {
-				mkdir($folder);
-			}
-		}
-		$result = $this->tar->addModify(array($tmpBase . $path), '', $tmpBase);
-		rmdir($tmpBase . $path);
-		$this->fileList = false;
-		$this->cachedHeaders = false;
-		return $result;
-	}
+    /**
+     * add an empty folder to the archive
+     *
+     * @param string $path
+     * @return bool
+     */
+    function addFolder($path) {
+        $tmpBase = \OC::$server->getTempManager()->getTemporaryFolder();
+        if (substr($path, -1, 1) != '/') {
+            $path .= '/';
+        }
+        if ($this->fileExists($path)) {
+            return false;
+        }
+        $parts = explode('/', $path);
+        $folder = $tmpBase;
+        foreach ($parts as $part) {
+            $folder .= '/' . $part;
+            if (!is_dir($folder)) {
+                mkdir($folder);
+            }
+        }
+        $result = $this->tar->addModify(array($tmpBase . $path), '', $tmpBase);
+        rmdir($tmpBase . $path);
+        $this->fileList = false;
+        $this->cachedHeaders = false;
+        return $result;
+    }
 
-	/**
-	 * add a file to the archive
-	 *
-	 * @param string $path
-	 * @param string $source either a local file or string data
-	 * @return bool
-	 */
-	function addFile($path, $source = '') {
-		if ($this->fileExists($path)) {
-			$this->remove($path);
-		}
-		if ($source and $source[0] == '/' and file_exists($source)) {
-			$source = file_get_contents($source);
-		}
-		$result = $this->tar->addString($path, $source);
-		$this->fileList = false;
-		$this->cachedHeaders = false;
-		return $result;
-	}
+    /**
+     * add a file to the archive
+     *
+     * @param string $path
+     * @param string $source either a local file or string data
+     * @return bool
+     */
+    function addFile($path, $source = '') {
+        if ($this->fileExists($path)) {
+            $this->remove($path);
+        }
+        if ($source and $source[0] == '/' and file_exists($source)) {
+            $source = file_get_contents($source);
+        }
+        $result = $this->tar->addString($path, $source);
+        $this->fileList = false;
+        $this->cachedHeaders = false;
+        return $result;
+    }
 
-	/**
-	 * rename a file or folder in the archive
-	 *
-	 * @param string $source
-	 * @param string $dest
-	 * @return bool
-	 */
-	function rename($source, $dest) {
-		//no proper way to delete, rename entire archive, rename file and remake archive
-		$tmp = \OCP\Files::tmpFolder();
-		$this->tar->extract($tmp);
-		rename($tmp . $source, $tmp . $dest);
-		$this->tar = null;
-		unlink($this->path);
-		$types = array(null, 'gz', 'bz');
-		$this->tar = new \Archive_Tar($this->path, $types[self::getTarType($this->path)]);
-		$this->tar->createModify(array($tmp), '', $tmp . '/');
-		$this->fileList = false;
-		$this->cachedHeaders = false;
-		return true;
-	}
+    /**
+     * rename a file or folder in the archive
+     *
+     * @param string $source
+     * @param string $dest
+     * @return bool
+     */
+    function rename($source, $dest) {
+        //no proper way to delete, rename entire archive, rename file and remake archive
+        $tmp = \OCP\Files::tmpFolder();
+        $this->tar->extract($tmp);
+        rename($tmp . $source, $tmp . $dest);
+        $this->tar = null;
+        unlink($this->path);
+        $types = array(null, 'gz', 'bz');
+        $this->tar = new \Archive_Tar($this->path, $types[self::getTarType($this->path)]);
+        $this->tar->createModify(array($tmp), '', $tmp . '/');
+        $this->fileList = false;
+        $this->cachedHeaders = false;
+        return true;
+    }
 
-	/**
-	 * @param string $file
-	 */
-	private function getHeader($file) {
-		if (!$this->cachedHeaders) {
-			$this->cachedHeaders = $this->tar->listContent();
-		}
-		foreach ($this->cachedHeaders as $header) {
-			if ($file == $header['filename']
-				or $file . '/' == $header['filename']
-				or '/' . $file . '/' == $header['filename']
-				or '/' . $file == $header['filename']
-			) {
-				return $header;
-			}
-		}
-		return null;
-	}
+    /**
+     * @param string $file
+     */
+    private function getHeader($file) {
+        if (!$this->cachedHeaders) {
+            $this->cachedHeaders = $this->tar->listContent();
+        }
+        foreach ($this->cachedHeaders as $header) {
+            if ($file == $header['filename']
+                or $file . '/' == $header['filename']
+                or '/' . $file . '/' == $header['filename']
+                or '/' . $file == $header['filename']
+            ) {
+                return $header;
+            }
+        }
+        return null;
+    }
 
-	/**
-	 * get the uncompressed size of a file in the archive
-	 *
-	 * @param string $path
-	 * @return int
-	 */
-	function filesize($path) {
-		$stat = $this->getHeader($path);
-		return $stat['size'];
-	}
+    /**
+     * get the uncompressed size of a file in the archive
+     *
+     * @param string $path
+     * @return int
+     */
+    function filesize($path) {
+        $stat = $this->getHeader($path);
+        return $stat['size'];
+    }
 
-	/**
-	 * get the last modified time of a file in the archive
-	 *
-	 * @param string $path
-	 * @return int
-	 */
-	function mtime($path) {
-		$stat = $this->getHeader($path);
-		return $stat['mtime'];
-	}
+    /**
+     * get the last modified time of a file in the archive
+     *
+     * @param string $path
+     * @return int
+     */
+    function mtime($path) {
+        $stat = $this->getHeader($path);
+        return $stat['mtime'];
+    }
 
-	/**
-	 * get the files in a folder
-	 *
-	 * @param string $path
-	 * @return array
-	 */
-	function getFolder($path) {
-		$files = $this->getFiles();
-		$folderContent = array();
-		$pathLength = strlen($path);
-		foreach ($files as $file) {
-			if ($file[0] == '/') {
-				$file = substr($file, 1);
-			}
-			if (substr($file, 0, $pathLength) == $path and $file != $path) {
-				$result = substr($file, $pathLength);
-				if ($pos = strpos($result, '/')) {
-					$result = substr($result, 0, $pos + 1);
-				}
-				if (array_search($result, $folderContent) === false) {
-					$folderContent[] = $result;
-				}
-			}
-		}
-		return $folderContent;
-	}
+    /**
+     * get the files in a folder
+     *
+     * @param string $path
+     * @return array
+     */
+    function getFolder($path) {
+        $files = $this->getFiles();
+        $folderContent = array();
+        $pathLength = strlen($path);
+        foreach ($files as $file) {
+            if ($file[0] == '/') {
+                $file = substr($file, 1);
+            }
+            if (substr($file, 0, $pathLength) == $path and $file != $path) {
+                $result = substr($file, $pathLength);
+                if ($pos = strpos($result, '/')) {
+                    $result = substr($result, 0, $pos + 1);
+                }
+                if (array_search($result, $folderContent) === false) {
+                    $folderContent[] = $result;
+                }
+            }
+        }
+        return $folderContent;
+    }
 
-	/**
-	 * get all files in the archive
-	 *
-	 * @return array
-	 */
-	function getFiles() {
-		if ($this->fileList) {
-			return $this->fileList;
-		}
-		if (!$this->cachedHeaders) {
-			$this->cachedHeaders = $this->tar->listContent();
-		}
-		$files = array();
-		foreach ($this->cachedHeaders as $header) {
-			$files[] = $header['filename'];
-		}
-		$this->fileList = $files;
-		return $files;
-	}
+    /**
+     * get all files in the archive
+     *
+     * @return array
+     */
+    function getFiles() {
+        if ($this->fileList) {
+            return $this->fileList;
+        }
+        if (!$this->cachedHeaders) {
+            $this->cachedHeaders = $this->tar->listContent();
+        }
+        $files = array();
+        foreach ($this->cachedHeaders as $header) {
+            $files[] = $header['filename'];
+        }
+        $this->fileList = $files;
+        return $files;
+    }
 
-	/**
-	 * get the content of a file
-	 *
-	 * @param string $path
-	 * @return string
-	 */
-	function getFile($path) {
-		return $this->tar->extractInString($path);
-	}
+    /**
+     * get the content of a file
+     *
+     * @param string $path
+     * @return string
+     */
+    function getFile($path) {
+        return $this->tar->extractInString($path);
+    }
 
-	/**
-	 * extract a single file from the archive
-	 *
-	 * @param string $path
-	 * @param string $dest
-	 * @return bool
-	 */
-	function extractFile($path, $dest) {
-		$tmp = \OCP\Files::tmpFolder();
-		if (!$this->fileExists($path)) {
-			return false;
-		}
-		if ($this->fileExists('/' . $path)) {
-			$success = $this->tar->extractList(array('/' . $path), $tmp);
-		} else {
-			$success = $this->tar->extractList(array($path), $tmp);
-		}
-		if ($success) {
-			rename($tmp . $path, $dest);
-		}
-		\OCP\Files::rmdirr($tmp);
-		return $success;
-	}
+    /**
+     * extract a single file from the archive
+     *
+     * @param string $path
+     * @param string $dest
+     * @return bool
+     */
+    function extractFile($path, $dest) {
+        $tmp = \OCP\Files::tmpFolder();
+        if (!$this->fileExists($path)) {
+            return false;
+        }
+        if ($this->fileExists('/' . $path)) {
+            $success = $this->tar->extractList(array('/' . $path), $tmp);
+        } else {
+            $success = $this->tar->extractList(array($path), $tmp);
+        }
+        if ($success) {
+            rename($tmp . $path, $dest);
+        }
+        \OCP\Files::rmdirr($tmp);
+        return $success;
+    }
 
-	/**
-	 * extract the archive
-	 *
-	 * @param string $dest
-	 * @return bool
-	 */
-	function extract($dest) {
-		return $this->tar->extract($dest);
-	}
+    /**
+     * extract the archive
+     *
+     * @param string $dest
+     * @return bool
+     */
+    function extract($dest) {
+        return $this->tar->extract($dest);
+    }
 
-	/**
-	 * check if a file or folder exists in the archive
-	 *
-	 * @param string $path
-	 * @return bool
-	 */
-	function fileExists($path) {
-		$files = $this->getFiles();
-		if ((array_search($path, $files) !== false) or (array_search($path . '/', $files) !== false)) {
-			return true;
-		} else {
-			$folderPath = $path;
-			if (substr($folderPath, -1, 1) != '/') {
-				$folderPath .= '/';
-			}
-			$pathLength = strlen($folderPath);
-			foreach ($files as $file) {
-				if (strlen($file) > $pathLength and substr($file, 0, $pathLength) == $folderPath) {
-					return true;
-				}
-			}
-		}
-		if ($path[0] != '/') { //not all programs agree on the use of a leading /
-			return $this->fileExists('/' . $path);
-		} else {
-			return false;
-		}
-	}
+    /**
+     * check if a file or folder exists in the archive
+     *
+     * @param string $path
+     * @return bool
+     */
+    function fileExists($path) {
+        $files = $this->getFiles();
+        if ((array_search($path, $files) !== false) or (array_search($path . '/', $files) !== false)) {
+            return true;
+        } else {
+            $folderPath = $path;
+            if (substr($folderPath, -1, 1) != '/') {
+                $folderPath .= '/';
+            }
+            $pathLength = strlen($folderPath);
+            foreach ($files as $file) {
+                if (strlen($file) > $pathLength and substr($file, 0, $pathLength) == $folderPath) {
+                    return true;
+                }
+            }
+        }
+        if ($path[0] != '/') { //not all programs agree on the use of a leading /
+            return $this->fileExists('/' . $path);
+        } else {
+            return false;
+        }
+    }
 
-	/**
-	 * remove a file or folder from the archive
-	 *
-	 * @param string $path
-	 * @return bool
-	 */
-	function remove($path) {
-		if (!$this->fileExists($path)) {
-			return false;
-		}
-		$this->fileList = false;
-		$this->cachedHeaders = false;
-		//no proper way to delete, extract entire archive, delete file and remake archive
-		$tmp = \OCP\Files::tmpFolder();
-		$this->tar->extract($tmp);
-		\OCP\Files::rmdirr($tmp . $path);
-		$this->tar = null;
-		unlink($this->path);
-		$this->reopen();
-		$this->tar->createModify(array($tmp), '', $tmp);
-		return true;
-	}
+    /**
+     * remove a file or folder from the archive
+     *
+     * @param string $path
+     * @return bool
+     */
+    function remove($path) {
+        if (!$this->fileExists($path)) {
+            return false;
+        }
+        $this->fileList = false;
+        $this->cachedHeaders = false;
+        //no proper way to delete, extract entire archive, delete file and remake archive
+        $tmp = \OCP\Files::tmpFolder();
+        $this->tar->extract($tmp);
+        \OCP\Files::rmdirr($tmp . $path);
+        $this->tar = null;
+        unlink($this->path);
+        $this->reopen();
+        $this->tar->createModify(array($tmp), '', $tmp);
+        return true;
+    }
 
-	/**
-	 * get a file handler
-	 *
-	 * @param string $path
-	 * @param string $mode
-	 * @return resource
-	 */
-	function getStream($path, $mode) {
-		if (strrpos($path, '.') !== false) {
-			$ext = substr($path, strrpos($path, '.'));
-		} else {
-			$ext = '';
-		}
-		$tmpFile = \OCP\Files::tmpFile($ext);
-		if ($this->fileExists($path)) {
-			$this->extractFile($path, $tmpFile);
-		} elseif ($mode == 'r' or $mode == 'rb') {
-			return false;
-		}
-		if ($mode == 'r' or $mode == 'rb') {
-			return fopen($tmpFile, $mode);
-		} else {
-			$handle = fopen($tmpFile, $mode);
-			return CallbackWrapper::wrap($handle, null, null, function () use ($path, $tmpFile) {
-				$this->writeBack($tmpFile, $path);
-			});
-		}
-	}
+    /**
+     * get a file handler
+     *
+     * @param string $path
+     * @param string $mode
+     * @return resource
+     */
+    function getStream($path, $mode) {
+        if (strrpos($path, '.') !== false) {
+            $ext = substr($path, strrpos($path, '.'));
+        } else {
+            $ext = '';
+        }
+        $tmpFile = \OCP\Files::tmpFile($ext);
+        if ($this->fileExists($path)) {
+            $this->extractFile($path, $tmpFile);
+        } elseif ($mode == 'r' or $mode == 'rb') {
+            return false;
+        }
+        if ($mode == 'r' or $mode == 'rb') {
+            return fopen($tmpFile, $mode);
+        } else {
+            $handle = fopen($tmpFile, $mode);
+            return CallbackWrapper::wrap($handle, null, null, function () use ($path, $tmpFile) {
+                $this->writeBack($tmpFile, $path);
+            });
+        }
+    }
 
-	/**
-	 * write back temporary files
-	 */
-	function writeBack($tmpFile, $path) {
-		$this->addFile($path, $tmpFile);
-		unlink($tmpFile);
-	}
+    /**
+     * write back temporary files
+     */
+    function writeBack($tmpFile, $path) {
+        $this->addFile($path, $tmpFile);
+        unlink($tmpFile);
+    }
 
-	/**
-	 * reopen the archive to ensure everything is written
-	 */
-	private function reopen() {
-		if ($this->tar) {
-			$this->tar->_close();
-			$this->tar = null;
-		}
-		$types = array(null, 'gz', 'bz');
-		$this->tar = new \Archive_Tar($this->path, $types[self::getTarType($this->path)]);
-	}
+    /**
+     * reopen the archive to ensure everything is written
+     */
+    private function reopen() {
+        if ($this->tar) {
+            $this->tar->_close();
+            $this->tar = null;
+        }
+        $types = array(null, 'gz', 'bz');
+        $this->tar = new \Archive_Tar($this->path, $types[self::getTarType($this->path)]);
+    }
 }

Spacing +15 added lines, -15 removed lines

@@ -101,13 +101,13 @@ 
 		$parts = explode('/', $path);
 		$folder = $tmpBase;
 		foreach ($parts as $part) {
-			$folder .= '/' . $part;
+			$folder .= '/'.$part;
 			if (!is_dir($folder)) {
 				mkdir($folder);
 			}
 		}
-		$result = $this->tar->addModify(array($tmpBase . $path), '', $tmpBase);
-		rmdir($tmpBase . $path);
+		$result = $this->tar->addModify(array($tmpBase.$path), '', $tmpBase);
+		rmdir($tmpBase.$path);
 		$this->fileList = false;
 		$this->cachedHeaders = false;
 		return $result;
@@ -144,12 +144,12 @@ 
 		//no proper way to delete, rename entire archive, rename file and remake archive
 		$tmp = \OCP\Files::tmpFolder();
 		$this->tar->extract($tmp);
-		rename($tmp . $source, $tmp . $dest);
+		rename($tmp.$source, $tmp.$dest);
 		$this->tar = null;
 		unlink($this->path);
 		$types = array(null, 'gz', 'bz');
 		$this->tar = new \Archive_Tar($this->path, $types[self::getTarType($this->path)]);
-		$this->tar->createModify(array($tmp), '', $tmp . '/');
+		$this->tar->createModify(array($tmp), '', $tmp.'/');
 		$this->fileList = false;
 		$this->cachedHeaders = false;
 		return true;
@@ -164,9 +164,9 @@ 
 		}
 		foreach ($this->cachedHeaders as $header) {
 			if ($file == $header['filename']
-				or $file . '/' == $header['filename']
-				or '/' . $file . '/' == $header['filename']
-				or '/' . $file == $header['filename']
+				or $file.'/' == $header['filename']
+				or '/'.$file.'/' == $header['filename']
+				or '/'.$file == $header['filename']
 			) {
 				return $header;
 			}
@@ -265,13 +265,13 @@ 
 		if (!$this->fileExists($path)) {
 			return false;
 		}
-		if ($this->fileExists('/' . $path)) {
-			$success = $this->tar->extractList(array('/' . $path), $tmp);
+		if ($this->fileExists('/'.$path)) {
+			$success = $this->tar->extractList(array('/'.$path), $tmp);
 		} else {
 			$success = $this->tar->extractList(array($path), $tmp);
 		}
 		if ($success) {
-			rename($tmp . $path, $dest);
+			rename($tmp.$path, $dest);
 		}
 		\OCP\Files::rmdirr($tmp);
 		return $success;
@@ -295,7 +295,7 @@ 
 	 */
 	function fileExists($path) {
 		$files = $this->getFiles();
-		if ((array_search($path, $files) !== false) or (array_search($path . '/', $files) !== false)) {
+		if ((array_search($path, $files) !== false) or (array_search($path.'/', $files) !== false)) {
 			return true;
 		} else {
 			$folderPath = $path;
@@ -310,7 +310,7 @@ 
 			}
 		}
 		if ($path[0] != '/') { //not all programs agree on the use of a leading /
-			return $this->fileExists('/' . $path);
+			return $this->fileExists('/'.$path);
 		} else {
 			return false;
 		}
@@ -331,7 +331,7 @@ 
 		//no proper way to delete, extract entire archive, delete file and remake archive
 		$tmp = \OCP\Files::tmpFolder();
 		$this->tar->extract($tmp);
-		\OCP\Files::rmdirr($tmp . $path);
+		\OCP\Files::rmdirr($tmp.$path);
 		$this->tar = null;
 		unlink($this->path);
 		$this->reopen();
@@ -362,7 +362,7 @@ 
 			return fopen($tmpFile, $mode);
 		} else {
 			$handle = fopen($tmpFile, $mode);
-			return CallbackWrapper::wrap($handle, null, null, function () use ($path, $tmpFile) {
+			return CallbackWrapper::wrap($handle, null, null, function() use ($path, $tmpFile) {
 				$this->writeBack($tmpFile, $path);
 			});
 		}