nextcloud / server

lib/private/Files/ObjectStore/ObjectStoreStorage.php

Indentation +392 added lines, -392 removed lines

@@ -31,396 +31,396 @@
 use OCP\Files\ObjectStore\IObjectStore;
 
 class ObjectStoreStorage extends \OC\Files\Storage\Common {
-	/**
-	 * @var \OCP\Files\ObjectStore\IObjectStore $objectStore
-	 */
-	protected $objectStore;
-	/**
-	 * @var string $id
-	 */
-	protected $id;
-	/**
-	 * @var \OC\User\User $user
-	 */
-	protected $user;
-
-	private $objectPrefix = 'urn:oid:';
-
-	private $logger;
-
-	public function __construct($params) {
-		if (isset($params['objectstore']) && $params['objectstore'] instanceof IObjectStore) {
-			$this->objectStore = $params['objectstore'];
-		} else {
-			throw new \Exception('missing IObjectStore instance');
-		}
-		if (isset($params['storageid'])) {
-			$this->id = 'object::store:' . $params['storageid'];
-		} else {
-			$this->id = 'object::store:' . $this->objectStore->getStorageId();
-		}
-		if (isset($params['objectPrefix'])) {
-			$this->objectPrefix = $params['objectPrefix'];
-		}
-		//initialize cache with root directory in cache
-		if (!$this->is_dir('/')) {
-			$this->mkdir('/');
-		}
-
-		$this->logger = \OC::$server->getLogger();
-	}
-
-	public function mkdir($path) {
-		$path = $this->normalizePath($path);
-
-		if ($this->file_exists($path)) {
-			return false;
-		}
-
-		$mTime = time();
-		$data = [
-			'mimetype' => 'httpd/unix-directory',
-			'size' => 0,
-			'mtime' => $mTime,
-			'storage_mtime' => $mTime,
-			'permissions' => \OCP\Constants::PERMISSION_ALL,
-		];
-		if ($path === '') {
-			//create root on the fly
-			$data['etag'] = $this->getETag('');
-			$this->getCache()->put('', $data);
-			return true;
-		} else {
-			// if parent does not exist, create it
-			$parent = $this->normalizePath(dirname($path));
-			$parentType = $this->filetype($parent);
-			if ($parentType === false) {
-				if (!$this->mkdir($parent)) {
-					// something went wrong
-					return false;
-				}
-			} else if ($parentType === 'file') {
-				// parent is a file
-				return false;
-			}
-			// finally create the new dir
-			$mTime = time(); // update mtime
-			$data['mtime'] = $mTime;
-			$data['storage_mtime'] = $mTime;
-			$data['etag'] = $this->getETag($path);
-			$this->getCache()->put($path, $data);
-			return true;
-		}
-	}
-
-	/**
-	 * @param string $path
-	 * @return string
-	 */
-	private function normalizePath($path) {
-		$path = trim($path, '/');
-		//FIXME why do we sometimes get a path like 'files//username'?
-		$path = str_replace('//', '/', $path);
-
-		// dirname('/folder') returns '.' but internally (in the cache) we store the root as ''
-		if (!$path || $path === '.') {
-			$path = '';
-		}
-
-		return $path;
-	}
-
-	/**
-	 * Object Stores use a NoopScanner because metadata is directly stored in
-	 * the file cache and cannot really scan the filesystem. The storage passed in is not used anywhere.
-	 *
-	 * @param string $path
-	 * @param \OC\Files\Storage\Storage (optional) the storage to pass to the scanner
-	 * @return \OC\Files\ObjectStore\NoopScanner
-	 */
-	public function getScanner($path = '', $storage = null) {
-		if (!$storage) {
-			$storage = $this;
-		}
-		if (!isset($this->scanner)) {
-			$this->scanner = new NoopScanner($storage);
-		}
-		return $this->scanner;
-	}
-
-	public function getId() {
-		return $this->id;
-	}
-
-	public function rmdir($path) {
-		$path = $this->normalizePath($path);
-
-		if (!$this->is_dir($path)) {
-			return false;
-		}
-
-		$this->rmObjects($path);
-
-		$this->getCache()->remove($path);
-
-		return true;
-	}
-
-	private function rmObjects($path) {
-		$children = $this->getCache()->getFolderContents($path);
-		foreach ($children as $child) {
-			if ($child['mimetype'] === 'httpd/unix-directory') {
-				$this->rmObjects($child['path']);
-			} else {
-				$this->unlink($child['path']);
-			}
-		}
-	}
-
-	public function unlink($path) {
-		$path = $this->normalizePath($path);
-		$stat = $this->stat($path);
-
-		if ($stat && isset($stat['fileid'])) {
-			if ($stat['mimetype'] === 'httpd/unix-directory') {
-				return $this->rmdir($path);
-			}
-			try {
-				$this->objectStore->deleteObject($this->getURN($stat['fileid']));
-			} catch (\Exception $ex) {
-				if ($ex->getCode() !== 404) {
-					$this->logger->logException($ex, [
-						'app' => 'objectstore',
-						'message' => 'Could not delete object ' . $this->getURN($stat['fileid']) . ' for ' . $path,
-					]);
-					return false;
-				}
-				//removing from cache is ok as it does not exist in the objectstore anyway
-			}
-			$this->getCache()->remove($path);
-			return true;
-		}
-		return false;
-	}
-
-	public function stat($path) {
-		$path = $this->normalizePath($path);
-		$cacheEntry = $this->getCache()->get($path);
-		if ($cacheEntry instanceof CacheEntry) {
-			return $cacheEntry->getData();
-		} else {
-			return false;
-		}
-	}
-
-	/**
-	 * Override this method if you need a different unique resource identifier for your object storage implementation.
-	 * The default implementations just appends the fileId to 'urn:oid:'. Make sure the URN is unique over all users.
-	 * You may need a mapping table to store your URN if it cannot be generated from the fileid.
-	 *
-	 * @param int $fileId the fileid
-	 * @return null|string the unified resource name used to identify the object
-	 */
-	protected function getURN($fileId) {
-		if (is_numeric($fileId)) {
-			return $this->objectPrefix . $fileId;
-		}
-		return null;
-	}
-
-	public function opendir($path) {
-		$path = $this->normalizePath($path);
-
-		try {
-			$files = array();
-			$folderContents = $this->getCache()->getFolderContents($path);
-			foreach ($folderContents as $file) {
-				$files[] = $file['name'];
-			}
-
-			return IteratorDirectory::wrap($files);
-		} catch (\Exception $e) {
-			$this->logger->logException($e);
-			return false;
-		}
-	}
-
-	public function filetype($path) {
-		$path = $this->normalizePath($path);
-		$stat = $this->stat($path);
-		if ($stat) {
-			if ($stat['mimetype'] === 'httpd/unix-directory') {
-				return 'dir';
-			}
-			return 'file';
-		} else {
-			return false;
-		}
-	}
-
-	public function fopen($path, $mode) {
-		$path = $this->normalizePath($path);
-
-		switch ($mode) {
-			case 'r':
-			case 'rb':
-				$stat = $this->stat($path);
-				if (is_array($stat)) {
-					try {
-						return $this->objectStore->readObject($this->getURN($stat['fileid']));
-					} catch (\Exception $ex) {
-						$this->logger->logException($ex, [
-							'app' => 'objectstore',
-							'message' => 'Count not get object ' . $this->getURN($stat['fileid']) . ' for file ' . $path,
-						]);
-						return false;
-					}
-				} else {
-					return false;
-				}
-			case 'w':
-			case 'wb':
-			case 'a':
-			case 'ab':
-			case 'r+':
-			case 'w+':
-			case 'wb+':
-			case 'a+':
-			case 'x':
-			case 'x+':
-			case 'c':
-			case 'c+':
-				if (strrpos($path, '.') !== false) {
-					$ext = substr($path, strrpos($path, '.'));
-				} else {
-					$ext = '';
-				}
-				$tmpFile = \OC::$server->getTempManager()->getTemporaryFile($ext);
-				if ($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, $path);
-				});
-		}
-		return false;
-	}
-
-	public function file_exists($path) {
-		$path = $this->normalizePath($path);
-		return (bool)$this->stat($path);
-	}
-
-	public function rename($source, $target) {
-		$source = $this->normalizePath($source);
-		$target = $this->normalizePath($target);
-		$this->remove($target);
-		$this->getCache()->move($source, $target);
-		$this->touch(dirname($target));
-		return true;
-	}
-
-	public function getMimeType($path) {
-		$path = $this->normalizePath($path);
-		$stat = $this->stat($path);
-		if (is_array($stat)) {
-			return $stat['mimetype'];
-		} else {
-			return false;
-		}
-	}
-
-	public function touch($path, $mtime = null) {
-		if (is_null($mtime)) {
-			$mtime = time();
-		}
-
-		$path = $this->normalizePath($path);
-		$dirName = dirname($path);
-		$parentExists = $this->is_dir($dirName);
-		if (!$parentExists) {
-			return false;
-		}
-
-		$stat = $this->stat($path);
-		if (is_array($stat)) {
-			// update existing mtime in db
-			$stat['mtime'] = $mtime;
-			$this->getCache()->update($stat['fileid'], $stat);
-		} else {
-			try {
-				//create a empty file, need to have at least on char to make it
-				// work with all object storage implementations
-				$this->file_put_contents($path, ' ');
-				$mimeType = \OC::$server->getMimeTypeDetector()->detectPath($path);
-				$stat = array(
-					'etag' => $this->getETag($path),
-					'mimetype' => $mimeType,
-					'size' => 0,
-					'mtime' => $mtime,
-					'storage_mtime' => $mtime,
-					'permissions' => \OCP\Constants::PERMISSION_ALL - \OCP\Constants::PERMISSION_CREATE,
-				);
-				$this->getCache()->put($path, $stat);
-			} catch (\Exception $ex) {
-				$this->logger->logException($ex, [
-					'app' => 'objectstore',
-					'message' => 'Could not create object for ' . $path,
-				]);
-				return false;
-			}
-		}
-		return true;
-	}
-
-	public function writeBack($tmpFile, $path) {
-		$stat = $this->stat($path);
-		if (empty($stat)) {
-			// create new file
-			$stat = array(
-				'permissions' => \OCP\Constants::PERMISSION_ALL - \OCP\Constants::PERMISSION_CREATE,
-			);
-		}
-		// update stat with new data
-		$mTime = time();
-		$stat['size'] = filesize($tmpFile);
-		$stat['mtime'] = $mTime;
-		$stat['storage_mtime'] = $mTime;
-
-		// run path based detection first, to use file extension because $tmpFile is only a random string
-		$mimetypeDetector = \OC::$server->getMimeTypeDetector();
-		$mimetype = $mimetypeDetector->detectPath($path);
-		if ($mimetype === 'application/octet-stream') {
-			$mimetype = $mimetypeDetector->detect($tmpFile);
-		}
-
-		$stat['mimetype'] = $mimetype;
-		$stat['etag'] = $this->getETag($path);
-
-		$fileId = $this->getCache()->put($path, $stat);
-		try {
-			//upload to object storage
-			$this->objectStore->writeObject($this->getURN($fileId), fopen($tmpFile, 'r'));
-		} catch (\Exception $ex) {
-			$this->getCache()->remove($path);
-			$this->logger->logException($ex, [
-				'app' => 'objectstore',
-				'message' => 'Could not create object ' . $this->getURN($fileId) . ' for ' . $path,
-			]);
-			throw $ex; // make this bubble up
-		}
-	}
-
-	/**
-	 * external changes are not supported, exclusive access to the object storage is assumed
-	 *
-	 * @param string $path
-	 * @param int $time
-	 * @return false
-	 */
-	public function hasUpdated($path, $time) {
-		return false;
-	}
+    /**
+     * @var \OCP\Files\ObjectStore\IObjectStore $objectStore
+     */
+    protected $objectStore;
+    /**
+     * @var string $id
+     */
+    protected $id;
+    /**
+     * @var \OC\User\User $user
+     */
+    protected $user;
+
+    private $objectPrefix = 'urn:oid:';
+
+    private $logger;
+
+    public function __construct($params) {
+        if (isset($params['objectstore']) && $params['objectstore'] instanceof IObjectStore) {
+            $this->objectStore = $params['objectstore'];
+        } else {
+            throw new \Exception('missing IObjectStore instance');
+        }
+        if (isset($params['storageid'])) {
+            $this->id = 'object::store:' . $params['storageid'];
+        } else {
+            $this->id = 'object::store:' . $this->objectStore->getStorageId();
+        }
+        if (isset($params['objectPrefix'])) {
+            $this->objectPrefix = $params['objectPrefix'];
+        }
+        //initialize cache with root directory in cache
+        if (!$this->is_dir('/')) {
+            $this->mkdir('/');
+        }
+
+        $this->logger = \OC::$server->getLogger();
+    }
+
+    public function mkdir($path) {
+        $path = $this->normalizePath($path);
+
+        if ($this->file_exists($path)) {
+            return false;
+        }
+
+        $mTime = time();
+        $data = [
+            'mimetype' => 'httpd/unix-directory',
+            'size' => 0,
+            'mtime' => $mTime,
+            'storage_mtime' => $mTime,
+            'permissions' => \OCP\Constants::PERMISSION_ALL,
+        ];
+        if ($path === '') {
+            //create root on the fly
+            $data['etag'] = $this->getETag('');
+            $this->getCache()->put('', $data);
+            return true;
+        } else {
+            // if parent does not exist, create it
+            $parent = $this->normalizePath(dirname($path));
+            $parentType = $this->filetype($parent);
+            if ($parentType === false) {
+                if (!$this->mkdir($parent)) {
+                    // something went wrong
+                    return false;
+                }
+            } else if ($parentType === 'file') {
+                // parent is a file
+                return false;
+            }
+            // finally create the new dir
+            $mTime = time(); // update mtime
+            $data['mtime'] = $mTime;
+            $data['storage_mtime'] = $mTime;
+            $data['etag'] = $this->getETag($path);
+            $this->getCache()->put($path, $data);
+            return true;
+        }
+    }
+
+    /**
+     * @param string $path
+     * @return string
+     */
+    private function normalizePath($path) {
+        $path = trim($path, '/');
+        //FIXME why do we sometimes get a path like 'files//username'?
+        $path = str_replace('//', '/', $path);
+
+        // dirname('/folder') returns '.' but internally (in the cache) we store the root as ''
+        if (!$path || $path === '.') {
+            $path = '';
+        }
+
+        return $path;
+    }
+
+    /**
+     * Object Stores use a NoopScanner because metadata is directly stored in
+     * the file cache and cannot really scan the filesystem. The storage passed in is not used anywhere.
+     *
+     * @param string $path
+     * @param \OC\Files\Storage\Storage (optional) the storage to pass to the scanner
+     * @return \OC\Files\ObjectStore\NoopScanner
+     */
+    public function getScanner($path = '', $storage = null) {
+        if (!$storage) {
+            $storage = $this;
+        }
+        if (!isset($this->scanner)) {
+            $this->scanner = new NoopScanner($storage);
+        }
+        return $this->scanner;
+    }
+
+    public function getId() {
+        return $this->id;
+    }
+
+    public function rmdir($path) {
+        $path = $this->normalizePath($path);
+
+        if (!$this->is_dir($path)) {
+            return false;
+        }
+
+        $this->rmObjects($path);
+
+        $this->getCache()->remove($path);
+
+        return true;
+    }
+
+    private function rmObjects($path) {
+        $children = $this->getCache()->getFolderContents($path);
+        foreach ($children as $child) {
+            if ($child['mimetype'] === 'httpd/unix-directory') {
+                $this->rmObjects($child['path']);
+            } else {
+                $this->unlink($child['path']);
+            }
+        }
+    }
+
+    public function unlink($path) {
+        $path = $this->normalizePath($path);
+        $stat = $this->stat($path);
+
+        if ($stat && isset($stat['fileid'])) {
+            if ($stat['mimetype'] === 'httpd/unix-directory') {
+                return $this->rmdir($path);
+            }
+            try {
+                $this->objectStore->deleteObject($this->getURN($stat['fileid']));
+            } catch (\Exception $ex) {
+                if ($ex->getCode() !== 404) {
+                    $this->logger->logException($ex, [
+                        'app' => 'objectstore',
+                        'message' => 'Could not delete object ' . $this->getURN($stat['fileid']) . ' for ' . $path,
+                    ]);
+                    return false;
+                }
+                //removing from cache is ok as it does not exist in the objectstore anyway
+            }
+            $this->getCache()->remove($path);
+            return true;
+        }
+        return false;
+    }
+
+    public function stat($path) {
+        $path = $this->normalizePath($path);
+        $cacheEntry = $this->getCache()->get($path);
+        if ($cacheEntry instanceof CacheEntry) {
+            return $cacheEntry->getData();
+        } else {
+            return false;
+        }
+    }
+
+    /**
+     * Override this method if you need a different unique resource identifier for your object storage implementation.
+     * The default implementations just appends the fileId to 'urn:oid:'. Make sure the URN is unique over all users.
+     * You may need a mapping table to store your URN if it cannot be generated from the fileid.
+     *
+     * @param int $fileId the fileid
+     * @return null|string the unified resource name used to identify the object
+     */
+    protected function getURN($fileId) {
+        if (is_numeric($fileId)) {
+            return $this->objectPrefix . $fileId;
+        }
+        return null;
+    }
+
+    public function opendir($path) {
+        $path = $this->normalizePath($path);
+
+        try {
+            $files = array();
+            $folderContents = $this->getCache()->getFolderContents($path);
+            foreach ($folderContents as $file) {
+                $files[] = $file['name'];
+            }
+
+            return IteratorDirectory::wrap($files);
+        } catch (\Exception $e) {
+            $this->logger->logException($e);
+            return false;
+        }
+    }
+
+    public function filetype($path) {
+        $path = $this->normalizePath($path);
+        $stat = $this->stat($path);
+        if ($stat) {
+            if ($stat['mimetype'] === 'httpd/unix-directory') {
+                return 'dir';
+            }
+            return 'file';
+        } else {
+            return false;
+        }
+    }
+
+    public function fopen($path, $mode) {
+        $path = $this->normalizePath($path);
+
+        switch ($mode) {
+            case 'r':
+            case 'rb':
+                $stat = $this->stat($path);
+                if (is_array($stat)) {
+                    try {
+                        return $this->objectStore->readObject($this->getURN($stat['fileid']));
+                    } catch (\Exception $ex) {
+                        $this->logger->logException($ex, [
+                            'app' => 'objectstore',
+                            'message' => 'Count not get object ' . $this->getURN($stat['fileid']) . ' for file ' . $path,
+                        ]);
+                        return false;
+                    }
+                } else {
+                    return false;
+                }
+            case 'w':
+            case 'wb':
+            case 'a':
+            case 'ab':
+            case 'r+':
+            case 'w+':
+            case 'wb+':
+            case 'a+':
+            case 'x':
+            case 'x+':
+            case 'c':
+            case 'c+':
+                if (strrpos($path, '.') !== false) {
+                    $ext = substr($path, strrpos($path, '.'));
+                } else {
+                    $ext = '';
+                }
+                $tmpFile = \OC::$server->getTempManager()->getTemporaryFile($ext);
+                if ($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, $path);
+                });
+        }
+        return false;
+    }
+
+    public function file_exists($path) {
+        $path = $this->normalizePath($path);
+        return (bool)$this->stat($path);
+    }
+
+    public function rename($source, $target) {
+        $source = $this->normalizePath($source);
+        $target = $this->normalizePath($target);
+        $this->remove($target);
+        $this->getCache()->move($source, $target);
+        $this->touch(dirname($target));
+        return true;
+    }
+
+    public function getMimeType($path) {
+        $path = $this->normalizePath($path);
+        $stat = $this->stat($path);
+        if (is_array($stat)) {
+            return $stat['mimetype'];
+        } else {
+            return false;
+        }
+    }
+
+    public function touch($path, $mtime = null) {
+        if (is_null($mtime)) {
+            $mtime = time();
+        }
+
+        $path = $this->normalizePath($path);
+        $dirName = dirname($path);
+        $parentExists = $this->is_dir($dirName);
+        if (!$parentExists) {
+            return false;
+        }
+
+        $stat = $this->stat($path);
+        if (is_array($stat)) {
+            // update existing mtime in db
+            $stat['mtime'] = $mtime;
+            $this->getCache()->update($stat['fileid'], $stat);
+        } else {
+            try {
+                //create a empty file, need to have at least on char to make it
+                // work with all object storage implementations
+                $this->file_put_contents($path, ' ');
+                $mimeType = \OC::$server->getMimeTypeDetector()->detectPath($path);
+                $stat = array(
+                    'etag' => $this->getETag($path),
+                    'mimetype' => $mimeType,
+                    'size' => 0,
+                    'mtime' => $mtime,
+                    'storage_mtime' => $mtime,
+                    'permissions' => \OCP\Constants::PERMISSION_ALL - \OCP\Constants::PERMISSION_CREATE,
+                );
+                $this->getCache()->put($path, $stat);
+            } catch (\Exception $ex) {
+                $this->logger->logException($ex, [
+                    'app' => 'objectstore',
+                    'message' => 'Could not create object for ' . $path,
+                ]);
+                return false;
+            }
+        }
+        return true;
+    }
+
+    public function writeBack($tmpFile, $path) {
+        $stat = $this->stat($path);
+        if (empty($stat)) {
+            // create new file
+            $stat = array(
+                'permissions' => \OCP\Constants::PERMISSION_ALL - \OCP\Constants::PERMISSION_CREATE,
+            );
+        }
+        // update stat with new data
+        $mTime = time();
+        $stat['size'] = filesize($tmpFile);
+        $stat['mtime'] = $mTime;
+        $stat['storage_mtime'] = $mTime;
+
+        // run path based detection first, to use file extension because $tmpFile is only a random string
+        $mimetypeDetector = \OC::$server->getMimeTypeDetector();
+        $mimetype = $mimetypeDetector->detectPath($path);
+        if ($mimetype === 'application/octet-stream') {
+            $mimetype = $mimetypeDetector->detect($tmpFile);
+        }
+
+        $stat['mimetype'] = $mimetype;
+        $stat['etag'] = $this->getETag($path);
+
+        $fileId = $this->getCache()->put($path, $stat);
+        try {
+            //upload to object storage
+            $this->objectStore->writeObject($this->getURN($fileId), fopen($tmpFile, 'r'));
+        } catch (\Exception $ex) {
+            $this->getCache()->remove($path);
+            $this->logger->logException($ex, [
+                'app' => 'objectstore',
+                'message' => 'Could not create object ' . $this->getURN($fileId) . ' for ' . $path,
+            ]);
+            throw $ex; // make this bubble up
+        }
+    }
+
+    /**
+     * external changes are not supported, exclusive access to the object storage is assumed
+     *
+     * @param string $path
+     * @param int $time
+     * @return false
+     */
+    public function hasUpdated($path, $time) {
+        return false;
+    }
 }

Spacing +9 added lines, -9 removed lines

@@ -55,9 +55,9 @@ 
 			throw new \Exception('missing IObjectStore instance');
 		}
 		if (isset($params['storageid'])) {
-			$this->id = 'object::store:' . $params['storageid'];
+			$this->id = 'object::store:'.$params['storageid'];
 		} else {
-			$this->id = 'object::store:' . $this->objectStore->getStorageId();
+			$this->id = 'object::store:'.$this->objectStore->getStorageId();
 		}
 		if (isset($params['objectPrefix'])) {
 			$this->objectPrefix = $params['objectPrefix'];
@@ -191,7 +191,7 @@ 
 				if ($ex->getCode() !== 404) {
 					$this->logger->logException($ex, [
 						'app' => 'objectstore',
-						'message' => 'Could not delete object ' . $this->getURN($stat['fileid']) . ' for ' . $path,
+						'message' => 'Could not delete object '.$this->getURN($stat['fileid']).' for '.$path,
 					]);
 					return false;
 				}
@@ -223,7 +223,7 @@ 
 	 */
 	protected function getURN($fileId) {
 		if (is_numeric($fileId)) {
-			return $this->objectPrefix . $fileId;
+			return $this->objectPrefix.$fileId;
 		}
 		return null;
 	}
@@ -271,7 +271,7 @@ 
 					} catch (\Exception $ex) {
 						$this->logger->logException($ex, [
 							'app' => 'objectstore',
-							'message' => 'Count not get object ' . $this->getURN($stat['fileid']) . ' for file ' . $path,
+							'message' => 'Count not get object '.$this->getURN($stat['fileid']).' for file '.$path,
 						]);
 						return false;
 					}
@@ -301,7 +301,7 @@ 
 					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);
 				});
 		}
@@ -310,7 +310,7 @@ 
 
 	public function file_exists($path) {
 		$path = $this->normalizePath($path);
-		return (bool)$this->stat($path);
+		return (bool) $this->stat($path);
 	}
 
 	public function rename($source, $target) {
@@ -367,7 +367,7 @@ 
 			} catch (\Exception $ex) {
 				$this->logger->logException($ex, [
 					'app' => 'objectstore',
-					'message' => 'Could not create object for ' . $path,
+					'message' => 'Could not create object for '.$path,
 				]);
 				return false;
 			}
@@ -407,7 +407,7 @@ 
 			$this->getCache()->remove($path);
 			$this->logger->logException($ex, [
 				'app' => 'objectstore',
-				'message' => 'Could not create object ' . $this->getURN($fileId) . ' for ' . $path,
+				'message' => 'Could not create object '.$this->getURN($fileId).' for '.$path,
 			]);
 			throw $ex; // make this bubble up
 		}

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

Indentation +217 added lines, -217 removed lines

@@ -51,246 +51,246 @@
 class TagsPlugin extends \Sabre\DAV\ServerPlugin
 {
 
-	// namespace
-	const NS_OWNCLOUD = 'http://owncloud.org/ns';
-	const TAGS_PROPERTYNAME = '{http://owncloud.org/ns}tags';
-	const FAVORITE_PROPERTYNAME = '{http://owncloud.org/ns}favorite';
-	const TAG_FAVORITE = '_$!<Favorite>!$_';
+    // namespace
+    const NS_OWNCLOUD = 'http://owncloud.org/ns';
+    const TAGS_PROPERTYNAME = '{http://owncloud.org/ns}tags';
+    const FAVORITE_PROPERTYNAME = '{http://owncloud.org/ns}favorite';
+    const TAG_FAVORITE = '_$!<Favorite>!$_';
 
-	/**
-	 * Reference to main server object
-	 *
-	 * @var \Sabre\DAV\Server
-	 */
-	private $server;
+    /**
+     * Reference to main server object
+     *
+     * @var \Sabre\DAV\Server
+     */
+    private $server;
 
-	/**
-	 * @var \OCP\ITagManager
-	 */
-	private $tagManager;
+    /**
+     * @var \OCP\ITagManager
+     */
+    private $tagManager;
 
-	/**
-	 * @var \OCP\ITags
-	 */
-	private $tagger;
+    /**
+     * @var \OCP\ITags
+     */
+    private $tagger;
 
-	/**
-	 * Array of file id to tags array
-	 * The null value means the cache wasn't initialized.
-	 *
-	 * @var array
-	 */
-	private $cachedTags;
+    /**
+     * Array of file id to tags array
+     * The null value means the cache wasn't initialized.
+     *
+     * @var array
+     */
+    private $cachedTags;
 
-	/**
-	 * @var \Sabre\DAV\Tree
-	 */
-	private $tree;
+    /**
+     * @var \Sabre\DAV\Tree
+     */
+    private $tree;
 
-	/**
-	 * @param \Sabre\DAV\Tree $tree tree
-	 * @param \OCP\ITagManager $tagManager tag manager
-	 */
-	public function __construct(\Sabre\DAV\Tree $tree, \OCP\ITagManager $tagManager) {
-		$this->tree = $tree;
-		$this->tagManager = $tagManager;
-		$this->tagger = null;
-		$this->cachedTags = array();
-	}
+    /**
+     * @param \Sabre\DAV\Tree $tree tree
+     * @param \OCP\ITagManager $tagManager tag manager
+     */
+    public function __construct(\Sabre\DAV\Tree $tree, \OCP\ITagManager $tagManager) {
+        $this->tree = $tree;
+        $this->tagManager = $tagManager;
+        $this->tagger = null;
+        $this->cachedTags = array();
+    }
 
-	/**
-	 * This initializes the plugin.
-	 *
-	 * This function is called by \Sabre\DAV\Server, after
-	 * addPlugin is called.
-	 *
-	 * This method should set up the required event subscriptions.
-	 *
-	 * @param \Sabre\DAV\Server $server
-	 * @return void
-	 */
-	public function initialize(\Sabre\DAV\Server $server) {
+    /**
+     * This initializes the plugin.
+     *
+     * This function is called by \Sabre\DAV\Server, after
+     * addPlugin is called.
+     *
+     * This method should set up the required event subscriptions.
+     *
+     * @param \Sabre\DAV\Server $server
+     * @return void
+     */
+    public function initialize(\Sabre\DAV\Server $server) {
 
-		$server->xml->namespaceMap[self::NS_OWNCLOUD] = 'oc';
-		$server->xml->elementMap[self::TAGS_PROPERTYNAME] = 'OCA\\DAV\\Connector\\Sabre\\TagList';
+        $server->xml->namespaceMap[self::NS_OWNCLOUD] = 'oc';
+        $server->xml->elementMap[self::TAGS_PROPERTYNAME] = 'OCA\\DAV\\Connector\\Sabre\\TagList';
 
-		$this->server = $server;
-		$this->server->on('propFind', array($this, 'handleGetProperties'));
-		$this->server->on('propPatch', array($this, 'handleUpdateProperties'));
-	}
+        $this->server = $server;
+        $this->server->on('propFind', array($this, 'handleGetProperties'));
+        $this->server->on('propPatch', array($this, 'handleUpdateProperties'));
+    }
 
-	/**
-	 * Returns the tagger
-	 *
-	 * @return \OCP\ITags tagger
-	 */
-	private function getTagger() {
-		if (!$this->tagger) {
-			$this->tagger = $this->tagManager->load('files');
-		}
-		return $this->tagger;
-	}
+    /**
+     * Returns the tagger
+     *
+     * @return \OCP\ITags tagger
+     */
+    private function getTagger() {
+        if (!$this->tagger) {
+            $this->tagger = $this->tagManager->load('files');
+        }
+        return $this->tagger;
+    }
 
-	/**
-	 * Returns tags and favorites.
-	 *
-	 * @param integer $fileId file id
-	 * @return array list($tags, $favorite) with $tags as tag array
-	 * and $favorite is a boolean whether the file was favorited
-	 */
-	private function getTagsAndFav($fileId) {
-		$isFav = false;
-		$tags = $this->getTags($fileId);
-		if ($tags) {
-			$favPos = array_search(self::TAG_FAVORITE, $tags);
-			if ($favPos !== false) {
-				$isFav = true;
-				unset($tags[$favPos]);
-			}
-		}
-		return array($tags, $isFav);
-	}
+    /**
+     * Returns tags and favorites.
+     *
+     * @param integer $fileId file id
+     * @return array list($tags, $favorite) with $tags as tag array
+     * and $favorite is a boolean whether the file was favorited
+     */
+    private function getTagsAndFav($fileId) {
+        $isFav = false;
+        $tags = $this->getTags($fileId);
+        if ($tags) {
+            $favPos = array_search(self::TAG_FAVORITE, $tags);
+            if ($favPos !== false) {
+                $isFav = true;
+                unset($tags[$favPos]);
+            }
+        }
+        return array($tags, $isFav);
+    }
 
-	/**
-	 * Returns tags for the given file id
-	 *
-	 * @param integer $fileId file id
-	 * @return array list of tags for that file
-	 */
-	private function getTags($fileId) {
-		if (isset($this->cachedTags[$fileId])) {
-			return $this->cachedTags[$fileId];
-		} else {
-			$tags = $this->getTagger()->getTagsForObjects(array($fileId));
-			if ($tags !== false) {
-				if (empty($tags)) {
-					return array();
-				}
-				return current($tags);
-			}
-		}
-		return null;
-	}
+    /**
+     * Returns tags for the given file id
+     *
+     * @param integer $fileId file id
+     * @return array list of tags for that file
+     */
+    private function getTags($fileId) {
+        if (isset($this->cachedTags[$fileId])) {
+            return $this->cachedTags[$fileId];
+        } else {
+            $tags = $this->getTagger()->getTagsForObjects(array($fileId));
+            if ($tags !== false) {
+                if (empty($tags)) {
+                    return array();
+                }
+                return current($tags);
+            }
+        }
+        return null;
+    }
 
-	/**
-	 * Updates the tags of the given file id
-	 *
-	 * @param int $fileId
-	 * @param array $tags array of tag strings
-	 */
-	private function updateTags($fileId, $tags) {
-		$tagger = $this->getTagger();
-		$currentTags = $this->getTags($fileId);
+    /**
+     * Updates the tags of the given file id
+     *
+     * @param int $fileId
+     * @param array $tags array of tag strings
+     */
+    private function updateTags($fileId, $tags) {
+        $tagger = $this->getTagger();
+        $currentTags = $this->getTags($fileId);
 
-		$newTags = array_diff($tags, $currentTags);
-		foreach ($newTags as $tag) {
-			if ($tag === self::TAG_FAVORITE) {
-				continue;
-			}
-			$tagger->tagAs($fileId, $tag);
-		}
-		$deletedTags = array_diff($currentTags, $tags);
-		foreach ($deletedTags as $tag) {
-			if ($tag === self::TAG_FAVORITE) {
-				continue;
-			}
-			$tagger->unTag($fileId, $tag);
-		}
-	}
+        $newTags = array_diff($tags, $currentTags);
+        foreach ($newTags as $tag) {
+            if ($tag === self::TAG_FAVORITE) {
+                continue;
+            }
+            $tagger->tagAs($fileId, $tag);
+        }
+        $deletedTags = array_diff($currentTags, $tags);
+        foreach ($deletedTags as $tag) {
+            if ($tag === self::TAG_FAVORITE) {
+                continue;
+            }
+            $tagger->unTag($fileId, $tag);
+        }
+    }
 
-	/**
-	 * Adds tags and favorites properties to the response,
-	 * if requested.
-	 *
-	 * @param PropFind $propFind
-	 * @param \Sabre\DAV\INode $node
-	 * @return void
-	 */
-	public function handleGetProperties(
-		PropFind $propFind,
-		\Sabre\DAV\INode $node
-	) {
-		if (!($node instanceof \OCA\DAV\Connector\Sabre\Node)) {
-			return;
-		}
+    /**
+     * Adds tags and favorites properties to the response,
+     * if requested.
+     *
+     * @param PropFind $propFind
+     * @param \Sabre\DAV\INode $node
+     * @return void
+     */
+    public function handleGetProperties(
+        PropFind $propFind,
+        \Sabre\DAV\INode $node
+    ) {
+        if (!($node instanceof \OCA\DAV\Connector\Sabre\Node)) {
+            return;
+        }
 
-		// need prefetch ?
-		if ($node instanceof \OCA\DAV\Connector\Sabre\Directory
-			&& $propFind->getDepth() !== 0
-			&& (!is_null($propFind->getStatus(self::TAGS_PROPERTYNAME))
-			|| !is_null($propFind->getStatus(self::FAVORITE_PROPERTYNAME))
-		)) {
-			// note: pre-fetching only supported for depth <= 1
-			$folderContent = $node->getChildren();
-			$fileIds[] = (int)$node->getId();
-			foreach ($folderContent as $info) {
-				$fileIds[] = (int)$info->getId();
-			}
-			$tags = $this->getTagger()->getTagsForObjects($fileIds);
-			if ($tags === false) {
-				// the tags API returns false on error...
-				$tags = array();
-			}
+        // need prefetch ?
+        if ($node instanceof \OCA\DAV\Connector\Sabre\Directory
+            && $propFind->getDepth() !== 0
+            && (!is_null($propFind->getStatus(self::TAGS_PROPERTYNAME))
+            || !is_null($propFind->getStatus(self::FAVORITE_PROPERTYNAME))
+        )) {
+            // note: pre-fetching only supported for depth <= 1
+            $folderContent = $node->getChildren();
+            $fileIds[] = (int)$node->getId();
+            foreach ($folderContent as $info) {
+                $fileIds[] = (int)$info->getId();
+            }
+            $tags = $this->getTagger()->getTagsForObjects($fileIds);
+            if ($tags === false) {
+                // the tags API returns false on error...
+                $tags = array();
+            }
 
-			$this->cachedTags = $this->cachedTags + $tags;
-			$emptyFileIds = array_diff($fileIds, array_keys($tags));
-			// also cache the ones that were not found
-			foreach ($emptyFileIds as $fileId) {
-				$this->cachedTags[$fileId] = [];
-			}
-		}
+            $this->cachedTags = $this->cachedTags + $tags;
+            $emptyFileIds = array_diff($fileIds, array_keys($tags));
+            // also cache the ones that were not found
+            foreach ($emptyFileIds as $fileId) {
+                $this->cachedTags[$fileId] = [];
+            }
+        }
 
-		$isFav = null;
+        $isFav = null;
 
-		$propFind->handle(self::TAGS_PROPERTYNAME, function() use (&$isFav, $node) {
-			list($tags, $isFav) = $this->getTagsAndFav($node->getId());
-			return new TagList($tags);
-		});
+        $propFind->handle(self::TAGS_PROPERTYNAME, function() use (&$isFav, $node) {
+            list($tags, $isFav) = $this->getTagsAndFav($node->getId());
+            return new TagList($tags);
+        });
 
-		$propFind->handle(self::FAVORITE_PROPERTYNAME, function() use ($isFav, $node) {
-			if (is_null($isFav)) {
-				list(, $isFav) = $this->getTagsAndFav($node->getId());
-			}
-			if ($isFav) {
-				return 1;
-			} else {
-				return 0;
-			}
-		});
-	}
+        $propFind->handle(self::FAVORITE_PROPERTYNAME, function() use ($isFav, $node) {
+            if (is_null($isFav)) {
+                list(, $isFav) = $this->getTagsAndFav($node->getId());
+            }
+            if ($isFav) {
+                return 1;
+            } else {
+                return 0;
+            }
+        });
+    }
 
-	/**
-	 * Updates tags and favorites properties, if applicable.
-	 *
-	 * @param string $path
-	 * @param PropPatch $propPatch
-	 *
-	 * @return void
-	 */
-	public function handleUpdateProperties($path, PropPatch $propPatch) {
-		$node = $this->tree->getNodeForPath($path);
-		if (!($node instanceof \OCA\DAV\Connector\Sabre\Node)) {
-			return;
-		}
+    /**
+     * Updates tags and favorites properties, if applicable.
+     *
+     * @param string $path
+     * @param PropPatch $propPatch
+     *
+     * @return void
+     */
+    public function handleUpdateProperties($path, PropPatch $propPatch) {
+        $node = $this->tree->getNodeForPath($path);
+        if (!($node instanceof \OCA\DAV\Connector\Sabre\Node)) {
+            return;
+        }
 
-		$propPatch->handle(self::TAGS_PROPERTYNAME, function($tagList) use ($node) {
-			$this->updateTags($node->getId(), $tagList->getTags());
-			return true;
-		});
+        $propPatch->handle(self::TAGS_PROPERTYNAME, function($tagList) use ($node) {
+            $this->updateTags($node->getId(), $tagList->getTags());
+            return true;
+        });
 
-		$propPatch->handle(self::FAVORITE_PROPERTYNAME, function($favState) use ($node) {
-			if ((int)$favState === 1 || $favState === 'true') {
-				$this->getTagger()->tagAs($node->getId(), self::TAG_FAVORITE);
-			} else {
-				$this->getTagger()->unTag($node->getId(), self::TAG_FAVORITE);
-			}
+        $propPatch->handle(self::FAVORITE_PROPERTYNAME, function($favState) use ($node) {
+            if ((int)$favState === 1 || $favState === 'true') {
+                $this->getTagger()->tagAs($node->getId(), self::TAG_FAVORITE);
+            } else {
+                $this->getTagger()->unTag($node->getId(), self::TAG_FAVORITE);
+            }
 
-			if (is_null($favState)) {
-				// confirm deletion
-				return 204;
-			}
+            if (is_null($favState)) {
+                // confirm deletion
+                return 204;
+            }
 
-			return 200;
-		});
-	}
+            return 200;
+        });
+    }
 }

apps/files_trashbin/lib/Trashbin.php

Indentation +950 added lines, -950 removed lines

@@ -52,954 +52,954 @@
 
 class Trashbin {
 
-	// unit: percentage; 50% of available disk space/quota
-	const DEFAULTMAXSIZE = 50;
-
-	/**
-	 * Whether versions have already be rescanned during this PHP request
-	 *
-	 * @var bool
-	 */
-	private static $scannedVersions = false;
-
-	/**
-	 * Ensure we don't need to scan the file during the move to trash
-	 * by triggering the scan in the pre-hook
-	 *
-	 * @param array $params
-	 */
-	public static function ensureFileScannedHook($params) {
-		try {
-			self::getUidAndFilename($params['path']);
-		} catch (NotFoundException $e) {
-			// nothing to scan for non existing files
-		}
-	}
-
-	/**
-	 * get the UID of the owner of the file and the path to the file relative to
-	 * owners files folder
-	 *
-	 * @param string $filename
-	 * @return array
-	 * @throws \OC\User\NoUserException
-	 */
-	public static function getUidAndFilename($filename) {
-		$uid = Filesystem::getOwner($filename);
-		$userManager = \OC::$server->getUserManager();
-		// if the user with the UID doesn't exists, e.g. because the UID points
-		// to a remote user with a federated cloud ID we use the current logged-in
-		// user. We need a valid local user to move the file to the right trash bin
-		if (!$userManager->userExists($uid)) {
-			$uid = User::getUser();
-		}
-		if (!$uid) {
-			// no owner, usually because of share link from ext storage
-			return [null, null];
-		}
-		Filesystem::initMountPoints($uid);
-		if ($uid !== User::getUser()) {
-			$info = Filesystem::getFileInfo($filename);
-			$ownerView = new View('/' . $uid . '/files');
-			try {
-				$filename = $ownerView->getPath($info['fileid']);
-			} catch (NotFoundException $e) {
-				$filename = null;
-			}
-		}
-		return [$uid, $filename];
-	}
-
-	/**
-	 * get original location of files for user
-	 *
-	 * @param string $user
-	 * @return array (filename => array (timestamp => original location))
-	 */
-	public static function getLocations($user) {
-		$query = \OC_DB::prepare('SELECT `id`, `timestamp`, `location`'
-			. ' FROM `*PREFIX*files_trash` WHERE `user`=?');
-		$result = $query->execute(array($user));
-		$array = array();
-		while ($row = $result->fetchRow()) {
-			if (isset($array[$row['id']])) {
-				$array[$row['id']][$row['timestamp']] = $row['location'];
-			} else {
-				$array[$row['id']] = array($row['timestamp'] => $row['location']);
-			}
-		}
-		return $array;
-	}
-
-	/**
-	 * get original location of file
-	 *
-	 * @param string $user
-	 * @param string $filename
-	 * @param string $timestamp
-	 * @return string original location
-	 */
-	public static function getLocation($user, $filename, $timestamp) {
-		$query = \OC_DB::prepare('SELECT `location` FROM `*PREFIX*files_trash`'
-			. ' WHERE `user`=? AND `id`=? AND `timestamp`=?');
-		$result = $query->execute(array($user, $filename, $timestamp))->fetchAll();
-		if (isset($result[0]['location'])) {
-			return $result[0]['location'];
-		} else {
-			return false;
-		}
-	}
-
-	private static function setUpTrash($user) {
-		$view = new View('/' . $user);
-		if (!$view->is_dir('files_trashbin')) {
-			$view->mkdir('files_trashbin');
-		}
-		if (!$view->is_dir('files_trashbin/files')) {
-			$view->mkdir('files_trashbin/files');
-		}
-		if (!$view->is_dir('files_trashbin/versions')) {
-			$view->mkdir('files_trashbin/versions');
-		}
-		if (!$view->is_dir('files_trashbin/keys')) {
-			$view->mkdir('files_trashbin/keys');
-		}
-	}
-
-
-	/**
-	 * copy file to owners trash
-	 *
-	 * @param string $sourcePath
-	 * @param string $owner
-	 * @param string $targetPath
-	 * @param $user
-	 * @param integer $timestamp
-	 */
-	private static function copyFilesToUser($sourcePath, $owner, $targetPath, $user, $timestamp) {
-		self::setUpTrash($owner);
-
-		$targetFilename = basename($targetPath);
-		$targetLocation = dirname($targetPath);
-
-		$sourceFilename = basename($sourcePath);
-
-		$view = new View('/');
-
-		$target = $user . '/files_trashbin/files/' . $targetFilename . '.d' . $timestamp;
-		$source = $owner . '/files_trashbin/files/' . $sourceFilename . '.d' . $timestamp;
-		self::copy_recursive($source, $target, $view);
-
-
-		if ($view->file_exists($target)) {
-			$query = \OC_DB::prepare("INSERT INTO `*PREFIX*files_trash` (`id`,`timestamp`,`location`,`user`) VALUES (?,?,?,?)");
-			$result = $query->execute(array($targetFilename, $timestamp, $targetLocation, $user));
-			if (!$result) {
-				\OCP\Util::writeLog('files_trashbin', 'trash bin database couldn\'t be updated for the files owner', \OCP\Util::ERROR);
-			}
-		}
-	}
-
-
-	/**
-	 * move file to the trash bin
-	 *
-	 * @param string $file_path path to the deleted file/directory relative to the files root directory
-	 * @param bool $ownerOnly delete for owner only (if file gets moved out of a shared folder)
-	 *
-	 * @return bool
-	 */
-	public static function move2trash($file_path, $ownerOnly = false) {
-		// get the user for which the filesystem is setup
-		$root = Filesystem::getRoot();
-		list(, $user) = explode('/', $root);
-		list($owner, $ownerPath) = self::getUidAndFilename($file_path);
-
-		// if no owner found (ex: ext storage + share link), will use the current user's trashbin then
-		if (is_null($owner)) {
-			$owner = $user;
-			$ownerPath = $file_path;
-		}
-
-		$ownerView = new View('/' . $owner);
-		// file has been deleted in between
-		if (is_null($ownerPath) || $ownerPath === '' || !$ownerView->file_exists('/files/' . $ownerPath)) {
-			return true;
-		}
-
-		self::setUpTrash($user);
-		if ($owner !== $user) {
-			// also setup for owner
-			self::setUpTrash($owner);
-		}
-
-		$path_parts = pathinfo($ownerPath);
-
-		$filename = $path_parts['basename'];
-		$location = $path_parts['dirname'];
-		$timestamp = time();
-
-		// disable proxy to prevent recursive calls
-		$trashPath = '/files_trashbin/files/' . $filename . '.d' . $timestamp;
-
-		/** @var \OC\Files\Storage\Storage $trashStorage */
-		list($trashStorage, $trashInternalPath) = $ownerView->resolvePath($trashPath);
-		/** @var \OC\Files\Storage\Storage $sourceStorage */
-		list($sourceStorage, $sourceInternalPath) = $ownerView->resolvePath('/files/' . $ownerPath);
-		try {
-			$moveSuccessful = true;
-			if ($trashStorage->file_exists($trashInternalPath)) {
-				$trashStorage->unlink($trashInternalPath);
-			}
-			$trashStorage->moveFromStorage($sourceStorage, $sourceInternalPath, $trashInternalPath);
-		} catch (\OCA\Files_Trashbin\Exceptions\CopyRecursiveException $e) {
-			$moveSuccessful = false;
-			if ($trashStorage->file_exists($trashInternalPath)) {
-				$trashStorage->unlink($trashInternalPath);
-			}
-			\OCP\Util::writeLog('files_trashbin', 'Couldn\'t move ' . $file_path . ' to the trash bin', \OCP\Util::ERROR);
-		}
-
-		if ($sourceStorage->file_exists($sourceInternalPath)) { // failed to delete the original file, abort
-			if ($sourceStorage->is_dir($sourceInternalPath)) {
-				$sourceStorage->rmdir($sourceInternalPath);
-			} else {
-				$sourceStorage->unlink($sourceInternalPath);
-			}
-			return false;
-		}
-
-		$trashStorage->getUpdater()->renameFromStorage($sourceStorage, $sourceInternalPath, $trashInternalPath);
-
-		if ($moveSuccessful) {
-			$query = \OC_DB::prepare("INSERT INTO `*PREFIX*files_trash` (`id`,`timestamp`,`location`,`user`) VALUES (?,?,?,?)");
-			$result = $query->execute(array($filename, $timestamp, $location, $owner));
-			if (!$result) {
-				\OCP\Util::writeLog('files_trashbin', 'trash bin database couldn\'t be updated', \OCP\Util::ERROR);
-			}
-			\OCP\Util::emitHook('\OCA\Files_Trashbin\Trashbin', 'post_moveToTrash', array('filePath' => Filesystem::normalizePath($file_path),
-				'trashPath' => Filesystem::normalizePath($filename . '.d' . $timestamp)));
-
-			self::retainVersions($filename, $owner, $ownerPath, $timestamp);
-
-			// if owner !== user we need to also add a copy to the users trash
-			if ($user !== $owner && $ownerOnly === false) {
-				self::copyFilesToUser($ownerPath, $owner, $file_path, $user, $timestamp);
-			}
-		}
-
-		self::scheduleExpire($user);
-
-		// if owner !== user we also need to update the owners trash size
-		if ($owner !== $user) {
-			self::scheduleExpire($owner);
-		}
-
-		return $moveSuccessful;
-	}
-
-	/**
-	 * Move file versions to trash so that they can be restored later
-	 *
-	 * @param string $filename of deleted file
-	 * @param string $owner owner user id
-	 * @param string $ownerPath path relative to the owner's home storage
-	 * @param integer $timestamp when the file was deleted
-	 */
-	private static function retainVersions($filename, $owner, $ownerPath, $timestamp) {
-		if (\OCP\App::isEnabled('files_versions') && !empty($ownerPath)) {
-
-			$user = User::getUser();
-			$rootView = new View('/');
-
-			if ($rootView->is_dir($owner . '/files_versions/' . $ownerPath)) {
-				if ($owner !== $user) {
-					self::copy_recursive($owner . '/files_versions/' . $ownerPath, $owner . '/files_trashbin/versions/' . basename($ownerPath) . '.d' . $timestamp, $rootView);
-				}
-				self::move($rootView, $owner . '/files_versions/' . $ownerPath, $user . '/files_trashbin/versions/' . $filename . '.d' . $timestamp);
-			} else if ($versions = \OCA\Files_Versions\Storage::getVersions($owner, $ownerPath)) {
-
-				foreach ($versions as $v) {
-					if ($owner !== $user) {
-						self::copy($rootView, $owner . '/files_versions' . $v['path'] . '.v' . $v['version'], $owner . '/files_trashbin/versions/' . $v['name'] . '.v' . $v['version'] . '.d' . $timestamp);
-					}
-					self::move($rootView, $owner . '/files_versions' . $v['path'] . '.v' . $v['version'], $user . '/files_trashbin/versions/' . $filename . '.v' . $v['version'] . '.d' . $timestamp);
-				}
-			}
-		}
-	}
-
-	/**
-	 * Move a file or folder on storage level
-	 *
-	 * @param View $view
-	 * @param string $source
-	 * @param string $target
-	 * @return bool
-	 */
-	private static function move(View $view, $source, $target) {
-		/** @var \OC\Files\Storage\Storage $sourceStorage */
-		list($sourceStorage, $sourceInternalPath) = $view->resolvePath($source);
-		/** @var \OC\Files\Storage\Storage $targetStorage */
-		list($targetStorage, $targetInternalPath) = $view->resolvePath($target);
-		/** @var \OC\Files\Storage\Storage $ownerTrashStorage */
-
-		$result = $targetStorage->moveFromStorage($sourceStorage, $sourceInternalPath, $targetInternalPath);
-		if ($result) {
-			$targetStorage->getUpdater()->renameFromStorage($sourceStorage, $sourceInternalPath, $targetInternalPath);
-		}
-		return $result;
-	}
-
-	/**
-	 * Copy a file or folder on storage level
-	 *
-	 * @param View $view
-	 * @param string $source
-	 * @param string $target
-	 * @return bool
-	 */
-	private static function copy(View $view, $source, $target) {
-		/** @var \OC\Files\Storage\Storage $sourceStorage */
-		list($sourceStorage, $sourceInternalPath) = $view->resolvePath($source);
-		/** @var \OC\Files\Storage\Storage $targetStorage */
-		list($targetStorage, $targetInternalPath) = $view->resolvePath($target);
-		/** @var \OC\Files\Storage\Storage $ownerTrashStorage */
-
-		$result = $targetStorage->copyFromStorage($sourceStorage, $sourceInternalPath, $targetInternalPath);
-		if ($result) {
-			$targetStorage->getUpdater()->update($targetInternalPath);
-		}
-		return $result;
-	}
-
-	/**
-	 * Restore a file or folder from trash bin
-	 *
-	 * @param string $file path to the deleted file/folder relative to "files_trashbin/files/",
-	 * including the timestamp suffix ".d12345678"
-	 * @param string $filename name of the file/folder
-	 * @param int $timestamp time when the file/folder was deleted
-	 *
-	 * @return bool true on success, false otherwise
-	 */
-	public static function restore($file, $filename, $timestamp) {
-		$user = User::getUser();
-		$view = new View('/' . $user);
-
-		$location = '';
-		if ($timestamp) {
-			$location = self::getLocation($user, $filename, $timestamp);
-			if ($location === false) {
-				\OCP\Util::writeLog('files_trashbin', 'trash bin database inconsistent! ($user: ' . $user . ' $filename: ' . $filename . ', $timestamp: ' . $timestamp . ')', \OCP\Util::ERROR);
-			} else {
-				// if location no longer exists, restore file in the root directory
-				if ($location !== '/' &&
-					(!$view->is_dir('files/' . $location) ||
-						!$view->isCreatable('files/' . $location))
-				) {
-					$location = '';
-				}
-			}
-		}
-
-		// we need a  extension in case a file/dir with the same name already exists
-		$uniqueFilename = self::getUniqueFilename($location, $filename, $view);
-
-		$source = Filesystem::normalizePath('files_trashbin/files/' . $file);
-		$target = Filesystem::normalizePath('files/' . $location . '/' . $uniqueFilename);
-		if (!$view->file_exists($source)) {
-			return false;
-		}
-		$mtime = $view->filemtime($source);
-
-		// restore file
-		$restoreResult = $view->rename($source, $target);
-
-		// handle the restore result
-		if ($restoreResult) {
-			$fakeRoot = $view->getRoot();
-			$view->chroot('/' . $user . '/files');
-			$view->touch('/' . $location . '/' . $uniqueFilename, $mtime);
-			$view->chroot($fakeRoot);
-			\OCP\Util::emitHook('\OCA\Files_Trashbin\Trashbin', 'post_restore', array('filePath' => Filesystem::normalizePath('/' . $location . '/' . $uniqueFilename),
-				'trashPath' => Filesystem::normalizePath($file)));
-
-			self::restoreVersions($view, $file, $filename, $uniqueFilename, $location, $timestamp);
-
-			if ($timestamp) {
-				$query = \OC_DB::prepare('DELETE FROM `*PREFIX*files_trash` WHERE `user`=? AND `id`=? AND `timestamp`=?');
-				$query->execute(array($user, $filename, $timestamp));
-			}
-
-			return true;
-		}
-
-		return false;
-	}
-
-	/**
-	 * restore versions from trash bin
-	 *
-	 * @param View $view file view
-	 * @param string $file complete path to file
-	 * @param string $filename name of file once it was deleted
-	 * @param string $uniqueFilename new file name to restore the file without overwriting existing files
-	 * @param string $location location if file
-	 * @param int $timestamp deletion time
-	 * @return false|null
-	 */
-	private static function restoreVersions(View $view, $file, $filename, $uniqueFilename, $location, $timestamp) {
-
-		if (\OCP\App::isEnabled('files_versions')) {
-
-			$user = User::getUser();
-			$rootView = new View('/');
-
-			$target = Filesystem::normalizePath('/' . $location . '/' . $uniqueFilename);
-
-			list($owner, $ownerPath) = self::getUidAndFilename($target);
-
-			// file has been deleted in between
-			if (empty($ownerPath)) {
-				return false;
-			}
-
-			if ($timestamp) {
-				$versionedFile = $filename;
-			} else {
-				$versionedFile = $file;
-			}
-
-			if ($view->is_dir('/files_trashbin/versions/' . $file)) {
-				$rootView->rename(Filesystem::normalizePath($user . '/files_trashbin/versions/' . $file), Filesystem::normalizePath($owner . '/files_versions/' . $ownerPath));
-			} else if ($versions = self::getVersionsFromTrash($versionedFile, $timestamp, $user)) {
-				foreach ($versions as $v) {
-					if ($timestamp) {
-						$rootView->rename($user . '/files_trashbin/versions/' . $versionedFile . '.v' . $v . '.d' . $timestamp, $owner . '/files_versions/' . $ownerPath . '.v' . $v);
-					} else {
-						$rootView->rename($user . '/files_trashbin/versions/' . $versionedFile . '.v' . $v, $owner . '/files_versions/' . $ownerPath . '.v' . $v);
-					}
-				}
-			}
-		}
-	}
-
-	/**
-	 * delete all files from the trash
-	 */
-	public static function deleteAll() {
-		$user = User::getUser();
-		$userRoot = \OC::$server->getUserFolder($user)->getParent();
-		$view = new View('/' . $user);
-		$fileInfos = $view->getDirectoryContent('files_trashbin/files');
-
-		try {
-			$trash = $userRoot->get('files_trashbin');
-		} catch (NotFoundException $e) {
-			return false;
-		}
-
-		// Array to store the relative path in (after the file is deleted, the view won't be able to relativise the path anymore)
-		$filePaths = array();
-		foreach($fileInfos as $fileInfo){
-			$filePaths[] = $view->getRelativePath($fileInfo->getPath());
-		}
-		unset($fileInfos); // save memory
-
-		// Bulk PreDelete-Hook
-		\OC_Hook::emit('\OCP\Trashbin', 'preDeleteAll', array('paths' => $filePaths));
-
-		// Single-File Hooks
-		foreach($filePaths as $path){
-			self::emitTrashbinPreDelete($path);
-		}
-
-		// actual file deletion
-		$trash->delete();
-		$query = \OC_DB::prepare('DELETE FROM `*PREFIX*files_trash` WHERE `user`=?');
-		$query->execute(array($user));
-
-		// Bulk PostDelete-Hook
-		\OC_Hook::emit('\OCP\Trashbin', 'deleteAll', array('paths' => $filePaths));
-
-		// Single-File Hooks
-		foreach($filePaths as $path){
-			self::emitTrashbinPostDelete($path);
-		}
-
-		$trash = $userRoot->newFolder('files_trashbin');
-		$trash->newFolder('files');
-
-		return true;
-	}
-
-	/**
-	 * wrapper function to emit the 'preDelete' hook of \OCP\Trashbin before a file is deleted
-	 * @param string $path
-	 */
-	protected static function emitTrashbinPreDelete($path){
-		\OC_Hook::emit('\OCP\Trashbin', 'preDelete', array('path' => $path));
-	}
-
-	/**
-	 * wrapper function to emit the 'delete' hook of \OCP\Trashbin after a file has been deleted
-	 * @param string $path
-	 */
-	protected static function emitTrashbinPostDelete($path){
-		\OC_Hook::emit('\OCP\Trashbin', 'delete', array('path' => $path));
-	}
-
-	/**
-	 * delete file from trash bin permanently
-	 *
-	 * @param string $filename path to the file
-	 * @param string $user
-	 * @param int $timestamp of deletion time
-	 *
-	 * @return int size of deleted files
-	 */
-	public static function delete($filename, $user, $timestamp = null) {
-		$userRoot = \OC::$server->getUserFolder($user)->getParent();
-		$view = new View('/' . $user);
-		$size = 0;
-
-		if ($timestamp) {
-			$query = \OC_DB::prepare('DELETE FROM `*PREFIX*files_trash` WHERE `user`=? AND `id`=? AND `timestamp`=?');
-			$query->execute(array($user, $filename, $timestamp));
-			$file = $filename . '.d' . $timestamp;
-		} else {
-			$file = $filename;
-		}
-
-		$size += self::deleteVersions($view, $file, $filename, $timestamp, $user);
-
-		try {
-			$node = $userRoot->get('/files_trashbin/files/' . $file);
-		} catch (NotFoundException $e) {
-			return $size;
-		}
-
-		if ($node instanceof Folder) {
-			$size += self::calculateSize(new View('/' . $user . '/files_trashbin/files/' . $file));
-		} else if ($node instanceof File) {
-			$size += $view->filesize('/files_trashbin/files/' . $file);
-		}
-
-		self::emitTrashbinPreDelete('/files_trashbin/files/' . $file);
-		$node->delete();
-		self::emitTrashbinPostDelete('/files_trashbin/files/' . $file);
-
-		return $size;
-	}
-
-	/**
-	 * @param View $view
-	 * @param string $file
-	 * @param string $filename
-	 * @param integer|null $timestamp
-	 * @param string $user
-	 * @return int
-	 */
-	private static function deleteVersions(View $view, $file, $filename, $timestamp, $user) {
-		$size = 0;
-		if (\OCP\App::isEnabled('files_versions')) {
-			if ($view->is_dir('files_trashbin/versions/' . $file)) {
-				$size += self::calculateSize(new View('/' . $user . '/files_trashbin/versions/' . $file));
-				$view->unlink('files_trashbin/versions/' . $file);
-			} else if ($versions = self::getVersionsFromTrash($filename, $timestamp, $user)) {
-				foreach ($versions as $v) {
-					if ($timestamp) {
-						$size += $view->filesize('/files_trashbin/versions/' . $filename . '.v' . $v . '.d' . $timestamp);
-						$view->unlink('/files_trashbin/versions/' . $filename . '.v' . $v . '.d' . $timestamp);
-					} else {
-						$size += $view->filesize('/files_trashbin/versions/' . $filename . '.v' . $v);
-						$view->unlink('/files_trashbin/versions/' . $filename . '.v' . $v);
-					}
-				}
-			}
-		}
-		return $size;
-	}
-
-	/**
-	 * check to see whether a file exists in trashbin
-	 *
-	 * @param string $filename path to the file
-	 * @param int $timestamp of deletion time
-	 * @return bool true if file exists, otherwise false
-	 */
-	public static function file_exists($filename, $timestamp = null) {
-		$user = User::getUser();
-		$view = new View('/' . $user);
-
-		if ($timestamp) {
-			$filename = $filename . '.d' . $timestamp;
-		}
-
-		$target = Filesystem::normalizePath('files_trashbin/files/' . $filename);
-		return $view->file_exists($target);
-	}
-
-	/**
-	 * deletes used space for trash bin in db if user was deleted
-	 *
-	 * @param string $uid id of deleted user
-	 * @return bool result of db delete operation
-	 */
-	public static function deleteUser($uid) {
-		$query = \OC_DB::prepare('DELETE FROM `*PREFIX*files_trash` WHERE `user`=?');
-		return $query->execute(array($uid));
-	}
-
-	/**
-	 * calculate remaining free space for trash bin
-	 *
-	 * @param integer $trashbinSize current size of the trash bin
-	 * @param string $user
-	 * @return int available free space for trash bin
-	 */
-	private static function calculateFreeSpace($trashbinSize, $user) {
-		$softQuota = true;
-		$userObject = \OC::$server->getUserManager()->get($user);
-		if(is_null($userObject)) {
-			return 0;
-		}
-		$quota = $userObject->getQuota();
-		if ($quota === null || $quota === 'none') {
-			$quota = Filesystem::free_space('/');
-			$softQuota = false;
-			// inf or unknown free space
-			if ($quota < 0) {
-				$quota = PHP_INT_MAX;
-			}
-		} else {
-			$quota = \OCP\Util::computerFileSize($quota);
-		}
-
-		// calculate available space for trash bin
-		// subtract size of files and current trash bin size from quota
-		if ($softQuota) {
-			$userFolder = \OC::$server->getUserFolder($user);
-			if(is_null($userFolder)) {
-				return 0;
-			}
-			$free = $quota - $userFolder->getSize(); // remaining free space for user
-			if ($free > 0) {
-				$availableSpace = ($free * self::DEFAULTMAXSIZE / 100) - $trashbinSize; // how much space can be used for versions
-			} else {
-				$availableSpace = $free - $trashbinSize;
-			}
-		} else {
-			$availableSpace = $quota;
-		}
-
-		return $availableSpace;
-	}
-
-	/**
-	 * resize trash bin if necessary after a new file was added to Nextcloud
-	 *
-	 * @param string $user user id
-	 */
-	public static function resizeTrash($user) {
-
-		$size = self::getTrashbinSize($user);
-
-		$freeSpace = self::calculateFreeSpace($size, $user);
-
-		if ($freeSpace < 0) {
-			self::scheduleExpire($user);
-		}
-	}
-
-	/**
-	 * clean up the trash bin
-	 *
-	 * @param string $user
-	 */
-	public static function expire($user) {
-		$trashBinSize = self::getTrashbinSize($user);
-		$availableSpace = self::calculateFreeSpace($trashBinSize, $user);
-
-		$dirContent = Helper::getTrashFiles('/', $user, 'mtime');
-
-		// delete all files older then $retention_obligation
-		list($delSize, $count) = self::deleteExpiredFiles($dirContent, $user);
-
-		$availableSpace += $delSize;
-
-		// delete files from trash until we meet the trash bin size limit again
-		self::deleteFiles(array_slice($dirContent, $count), $user, $availableSpace);
-	}
-
-	/**
-	 * @param string $user
-	 */
-	private static function scheduleExpire($user) {
-		// let the admin disable auto expire
-		$application = new Application();
-		$expiration = $application->getContainer()->query('Expiration');
-		if ($expiration->isEnabled()) {
-			\OC::$server->getCommandBus()->push(new Expire($user));
-		}
-	}
-
-	/**
-	 * if the size limit for the trash bin is reached, we delete the oldest
-	 * files in the trash bin until we meet the limit again
-	 *
-	 * @param array $files
-	 * @param string $user
-	 * @param int $availableSpace available disc space
-	 * @return int size of deleted files
-	 */
-	protected static function deleteFiles($files, $user, $availableSpace) {
-		$application = new Application();
-		$expiration = $application->getContainer()->query('Expiration');
-		$size = 0;
-
-		if ($availableSpace < 0) {
-			foreach ($files as $file) {
-				if ($availableSpace < 0 && $expiration->isExpired($file['mtime'], true)) {
-					$tmp = self::delete($file['name'], $user, $file['mtime']);
-					\OCP\Util::writeLog('files_trashbin', 'remove "' . $file['name'] . '" (' . $tmp . 'B) to meet the limit of trash bin size (50% of available quota)', \OCP\Util::INFO);
-					$availableSpace += $tmp;
-					$size += $tmp;
-				} else {
-					break;
-				}
-			}
-		}
-		return $size;
-	}
-
-	/**
-	 * delete files older then max storage time
-	 *
-	 * @param array $files list of files sorted by mtime
-	 * @param string $user
-	 * @return integer[] size of deleted files and number of deleted files
-	 */
-	public static function deleteExpiredFiles($files, $user) {
-		$application = new Application();
-		$expiration = $application->getContainer()->query('Expiration');
-		$size = 0;
-		$count = 0;
-		foreach ($files as $file) {
-			$timestamp = $file['mtime'];
-			$filename = $file['name'];
-			if ($expiration->isExpired($timestamp)) {
-				$count++;
-				$size += self::delete($filename, $user, $timestamp);
-				\OC::$server->getLogger()->info(
-					'Remove "' . $filename . '" from trashbin because it exceeds max retention obligation term.',
-					['app' => 'files_trashbin']
-				);
-			} else {
-				break;
-			}
-		}
-
-		return array($size, $count);
-	}
-
-	/**
-	 * recursive copy to copy a whole directory
-	 *
-	 * @param string $source source path, relative to the users files directory
-	 * @param string $destination destination path relative to the users root directoy
-	 * @param View $view file view for the users root directory
-	 * @return int
-	 * @throws Exceptions\CopyRecursiveException
-	 */
-	private static function copy_recursive($source, $destination, View $view) {
-		$size = 0;
-		if ($view->is_dir($source)) {
-			$view->mkdir($destination);
-			$view->touch($destination, $view->filemtime($source));
-			foreach ($view->getDirectoryContent($source) as $i) {
-				$pathDir = $source . '/' . $i['name'];
-				if ($view->is_dir($pathDir)) {
-					$size += self::copy_recursive($pathDir, $destination . '/' . $i['name'], $view);
-				} else {
-					$size += $view->filesize($pathDir);
-					$result = $view->copy($pathDir, $destination . '/' . $i['name']);
-					if (!$result) {
-						throw new \OCA\Files_Trashbin\Exceptions\CopyRecursiveException();
-					}
-					$view->touch($destination . '/' . $i['name'], $view->filemtime($pathDir));
-				}
-			}
-		} else {
-			$size += $view->filesize($source);
-			$result = $view->copy($source, $destination);
-			if (!$result) {
-				throw new \OCA\Files_Trashbin\Exceptions\CopyRecursiveException();
-			}
-			$view->touch($destination, $view->filemtime($source));
-		}
-		return $size;
-	}
-
-	/**
-	 * find all versions which belong to the file we want to restore
-	 *
-	 * @param string $filename name of the file which should be restored
-	 * @param int $timestamp timestamp when the file was deleted
-	 * @return array
-	 */
-	private static function getVersionsFromTrash($filename, $timestamp, $user) {
-		$view = new View('/' . $user . '/files_trashbin/versions');
-		$versions = array();
-
-		//force rescan of versions, local storage may not have updated the cache
-		if (!self::$scannedVersions) {
-			/** @var \OC\Files\Storage\Storage $storage */
-			list($storage,) = $view->resolvePath('/');
-			$storage->getScanner()->scan('files_trashbin/versions');
-			self::$scannedVersions = true;
-		}
-
-		if ($timestamp) {
-			// fetch for old versions
-			$matches = $view->searchRaw($filename . '.v%.d' . $timestamp);
-			$offset = -strlen($timestamp) - 2;
-		} else {
-			$matches = $view->searchRaw($filename . '.v%');
-		}
-
-		if (is_array($matches)) {
-			foreach ($matches as $ma) {
-				if ($timestamp) {
-					$parts = explode('.v', substr($ma['path'], 0, $offset));
-					$versions[] = (end($parts));
-				} else {
-					$parts = explode('.v', $ma);
-					$versions[] = (end($parts));
-				}
-			}
-		}
-		return $versions;
-	}
-
-	/**
-	 * find unique extension for restored file if a file with the same name already exists
-	 *
-	 * @param string $location where the file should be restored
-	 * @param string $filename name of the file
-	 * @param View $view filesystem view relative to users root directory
-	 * @return string with unique extension
-	 */
-	private static function getUniqueFilename($location, $filename, View $view) {
-		$ext = pathinfo($filename, PATHINFO_EXTENSION);
-		$name = pathinfo($filename, PATHINFO_FILENAME);
-		$l = \OC::$server->getL10N('files_trashbin');
-
-		$location = '/' . trim($location, '/');
-
-		// if extension is not empty we set a dot in front of it
-		if ($ext !== '') {
-			$ext = '.' . $ext;
-		}
-
-		if ($view->file_exists('files' . $location . '/' . $filename)) {
-			$i = 2;
-			$uniqueName = $name . " (" . $l->t("restored") . ")" . $ext;
-			while ($view->file_exists('files' . $location . '/' . $uniqueName)) {
-				$uniqueName = $name . " (" . $l->t("restored") . " " . $i . ")" . $ext;
-				$i++;
-			}
-
-			return $uniqueName;
-		}
-
-		return $filename;
-	}
-
-	/**
-	 * get the size from a given root folder
-	 *
-	 * @param View $view file view on the root folder
-	 * @return integer size of the folder
-	 */
-	private static function calculateSize($view) {
-		$root = \OC::$server->getConfig()->getSystemValue('datadirectory', \OC::$SERVERROOT . '/data') . $view->getAbsolutePath('');
-		if (!file_exists($root)) {
-			return 0;
-		}
-		$iterator = new \RecursiveIteratorIterator(new \RecursiveDirectoryIterator($root), \RecursiveIteratorIterator::CHILD_FIRST);
-		$size = 0;
-
-		/**
-		 * RecursiveDirectoryIterator on an NFS path isn't iterable with foreach
-		 * This bug is fixed in PHP 5.5.9 or before
-		 * See #8376
-		 */
-		$iterator->rewind();
-		while ($iterator->valid()) {
-			$path = $iterator->current();
-			$relpath = substr($path, strlen($root) - 1);
-			if (!$view->is_dir($relpath)) {
-				$size += $view->filesize($relpath);
-			}
-			$iterator->next();
-		}
-		return $size;
-	}
-
-	/**
-	 * get current size of trash bin from a given user
-	 *
-	 * @param string $user user who owns the trash bin
-	 * @return integer trash bin size
-	 */
-	private static function getTrashbinSize($user) {
-		$view = new View('/' . $user);
-		$fileInfo = $view->getFileInfo('/files_trashbin');
-		return isset($fileInfo['size']) ? $fileInfo['size'] : 0;
-	}
-
-	/**
-	 * register hooks
-	 */
-	public static function registerHooks() {
-		// create storage wrapper on setup
-		\OCP\Util::connectHook('OC_Filesystem', 'preSetup', 'OCA\Files_Trashbin\Storage', 'setupStorage');
-		//Listen to delete user signal
-		\OCP\Util::connectHook('OC_User', 'pre_deleteUser', 'OCA\Files_Trashbin\Hooks', 'deleteUser_hook');
-		//Listen to post write hook
-		\OCP\Util::connectHook('OC_Filesystem', 'post_write', 'OCA\Files_Trashbin\Hooks', 'post_write_hook');
-		// pre and post-rename, disable trash logic for the copy+unlink case
-		\OCP\Util::connectHook('OC_Filesystem', 'delete', 'OCA\Files_Trashbin\Trashbin', 'ensureFileScannedHook');
-		\OCP\Util::connectHook('OC_Filesystem', 'rename', 'OCA\Files_Trashbin\Storage', 'preRenameHook');
-		\OCP\Util::connectHook('OC_Filesystem', 'post_rename', 'OCA\Files_Trashbin\Storage', 'postRenameHook');
-	}
-
-	/**
-	 * check if trash bin is empty for a given user
-	 *
-	 * @param string $user
-	 * @return bool
-	 */
-	public static function isEmpty($user) {
-
-		$view = new View('/' . $user . '/files_trashbin');
-		if ($view->is_dir('/files') && $dh = $view->opendir('/files')) {
-			while ($file = readdir($dh)) {
-				if (!Filesystem::isIgnoredDir($file)) {
-					return false;
-				}
-			}
-		}
-		return true;
-	}
-
-	/**
-	 * @param $path
-	 * @return string
-	 */
-	public static function preview_icon($path) {
-		return \OCP\Util::linkToRoute('core_ajax_trashbin_preview', array('x' => 32, 'y' => 32, 'file' => $path));
-	}
+    // unit: percentage; 50% of available disk space/quota
+    const DEFAULTMAXSIZE = 50;
+
+    /**
+     * Whether versions have already be rescanned during this PHP request
+     *
+     * @var bool
+     */
+    private static $scannedVersions = false;
+
+    /**
+     * Ensure we don't need to scan the file during the move to trash
+     * by triggering the scan in the pre-hook
+     *
+     * @param array $params
+     */
+    public static function ensureFileScannedHook($params) {
+        try {
+            self::getUidAndFilename($params['path']);
+        } catch (NotFoundException $e) {
+            // nothing to scan for non existing files
+        }
+    }
+
+    /**
+     * get the UID of the owner of the file and the path to the file relative to
+     * owners files folder
+     *
+     * @param string $filename
+     * @return array
+     * @throws \OC\User\NoUserException
+     */
+    public static function getUidAndFilename($filename) {
+        $uid = Filesystem::getOwner($filename);
+        $userManager = \OC::$server->getUserManager();
+        // if the user with the UID doesn't exists, e.g. because the UID points
+        // to a remote user with a federated cloud ID we use the current logged-in
+        // user. We need a valid local user to move the file to the right trash bin
+        if (!$userManager->userExists($uid)) {
+            $uid = User::getUser();
+        }
+        if (!$uid) {
+            // no owner, usually because of share link from ext storage
+            return [null, null];
+        }
+        Filesystem::initMountPoints($uid);
+        if ($uid !== User::getUser()) {
+            $info = Filesystem::getFileInfo($filename);
+            $ownerView = new View('/' . $uid . '/files');
+            try {
+                $filename = $ownerView->getPath($info['fileid']);
+            } catch (NotFoundException $e) {
+                $filename = null;
+            }
+        }
+        return [$uid, $filename];
+    }
+
+    /**
+     * get original location of files for user
+     *
+     * @param string $user
+     * @return array (filename => array (timestamp => original location))
+     */
+    public static function getLocations($user) {
+        $query = \OC_DB::prepare('SELECT `id`, `timestamp`, `location`'
+            . ' FROM `*PREFIX*files_trash` WHERE `user`=?');
+        $result = $query->execute(array($user));
+        $array = array();
+        while ($row = $result->fetchRow()) {
+            if (isset($array[$row['id']])) {
+                $array[$row['id']][$row['timestamp']] = $row['location'];
+            } else {
+                $array[$row['id']] = array($row['timestamp'] => $row['location']);
+            }
+        }
+        return $array;
+    }
+
+    /**
+     * get original location of file
+     *
+     * @param string $user
+     * @param string $filename
+     * @param string $timestamp
+     * @return string original location
+     */
+    public static function getLocation($user, $filename, $timestamp) {
+        $query = \OC_DB::prepare('SELECT `location` FROM `*PREFIX*files_trash`'
+            . ' WHERE `user`=? AND `id`=? AND `timestamp`=?');
+        $result = $query->execute(array($user, $filename, $timestamp))->fetchAll();
+        if (isset($result[0]['location'])) {
+            return $result[0]['location'];
+        } else {
+            return false;
+        }
+    }
+
+    private static function setUpTrash($user) {
+        $view = new View('/' . $user);
+        if (!$view->is_dir('files_trashbin')) {
+            $view->mkdir('files_trashbin');
+        }
+        if (!$view->is_dir('files_trashbin/files')) {
+            $view->mkdir('files_trashbin/files');
+        }
+        if (!$view->is_dir('files_trashbin/versions')) {
+            $view->mkdir('files_trashbin/versions');
+        }
+        if (!$view->is_dir('files_trashbin/keys')) {
+            $view->mkdir('files_trashbin/keys');
+        }
+    }
+
+
+    /**
+     * copy file to owners trash
+     *
+     * @param string $sourcePath
+     * @param string $owner
+     * @param string $targetPath
+     * @param $user
+     * @param integer $timestamp
+     */
+    private static function copyFilesToUser($sourcePath, $owner, $targetPath, $user, $timestamp) {
+        self::setUpTrash($owner);
+
+        $targetFilename = basename($targetPath);
+        $targetLocation = dirname($targetPath);
+
+        $sourceFilename = basename($sourcePath);
+
+        $view = new View('/');
+
+        $target = $user . '/files_trashbin/files/' . $targetFilename . '.d' . $timestamp;
+        $source = $owner . '/files_trashbin/files/' . $sourceFilename . '.d' . $timestamp;
+        self::copy_recursive($source, $target, $view);
+
+
+        if ($view->file_exists($target)) {
+            $query = \OC_DB::prepare("INSERT INTO `*PREFIX*files_trash` (`id`,`timestamp`,`location`,`user`) VALUES (?,?,?,?)");
+            $result = $query->execute(array($targetFilename, $timestamp, $targetLocation, $user));
+            if (!$result) {
+                \OCP\Util::writeLog('files_trashbin', 'trash bin database couldn\'t be updated for the files owner', \OCP\Util::ERROR);
+            }
+        }
+    }
+
+
+    /**
+     * move file to the trash bin
+     *
+     * @param string $file_path path to the deleted file/directory relative to the files root directory
+     * @param bool $ownerOnly delete for owner only (if file gets moved out of a shared folder)
+     *
+     * @return bool
+     */
+    public static function move2trash($file_path, $ownerOnly = false) {
+        // get the user for which the filesystem is setup
+        $root = Filesystem::getRoot();
+        list(, $user) = explode('/', $root);
+        list($owner, $ownerPath) = self::getUidAndFilename($file_path);
+
+        // if no owner found (ex: ext storage + share link), will use the current user's trashbin then
+        if (is_null($owner)) {
+            $owner = $user;
+            $ownerPath = $file_path;
+        }
+
+        $ownerView = new View('/' . $owner);
+        // file has been deleted in between
+        if (is_null($ownerPath) || $ownerPath === '' || !$ownerView->file_exists('/files/' . $ownerPath)) {
+            return true;
+        }
+
+        self::setUpTrash($user);
+        if ($owner !== $user) {
+            // also setup for owner
+            self::setUpTrash($owner);
+        }
+
+        $path_parts = pathinfo($ownerPath);
+
+        $filename = $path_parts['basename'];
+        $location = $path_parts['dirname'];
+        $timestamp = time();
+
+        // disable proxy to prevent recursive calls
+        $trashPath = '/files_trashbin/files/' . $filename . '.d' . $timestamp;
+
+        /** @var \OC\Files\Storage\Storage $trashStorage */
+        list($trashStorage, $trashInternalPath) = $ownerView->resolvePath($trashPath);
+        /** @var \OC\Files\Storage\Storage $sourceStorage */
+        list($sourceStorage, $sourceInternalPath) = $ownerView->resolvePath('/files/' . $ownerPath);
+        try {
+            $moveSuccessful = true;
+            if ($trashStorage->file_exists($trashInternalPath)) {
+                $trashStorage->unlink($trashInternalPath);
+            }
+            $trashStorage->moveFromStorage($sourceStorage, $sourceInternalPath, $trashInternalPath);
+        } catch (\OCA\Files_Trashbin\Exceptions\CopyRecursiveException $e) {
+            $moveSuccessful = false;
+            if ($trashStorage->file_exists($trashInternalPath)) {
+                $trashStorage->unlink($trashInternalPath);
+            }
+            \OCP\Util::writeLog('files_trashbin', 'Couldn\'t move ' . $file_path . ' to the trash bin', \OCP\Util::ERROR);
+        }
+
+        if ($sourceStorage->file_exists($sourceInternalPath)) { // failed to delete the original file, abort
+            if ($sourceStorage->is_dir($sourceInternalPath)) {
+                $sourceStorage->rmdir($sourceInternalPath);
+            } else {
+                $sourceStorage->unlink($sourceInternalPath);
+            }
+            return false;
+        }
+
+        $trashStorage->getUpdater()->renameFromStorage($sourceStorage, $sourceInternalPath, $trashInternalPath);
+
+        if ($moveSuccessful) {
+            $query = \OC_DB::prepare("INSERT INTO `*PREFIX*files_trash` (`id`,`timestamp`,`location`,`user`) VALUES (?,?,?,?)");
+            $result = $query->execute(array($filename, $timestamp, $location, $owner));
+            if (!$result) {
+                \OCP\Util::writeLog('files_trashbin', 'trash bin database couldn\'t be updated', \OCP\Util::ERROR);
+            }
+            \OCP\Util::emitHook('\OCA\Files_Trashbin\Trashbin', 'post_moveToTrash', array('filePath' => Filesystem::normalizePath($file_path),
+                'trashPath' => Filesystem::normalizePath($filename . '.d' . $timestamp)));
+
+            self::retainVersions($filename, $owner, $ownerPath, $timestamp);
+
+            // if owner !== user we need to also add a copy to the users trash
+            if ($user !== $owner && $ownerOnly === false) {
+                self::copyFilesToUser($ownerPath, $owner, $file_path, $user, $timestamp);
+            }
+        }
+
+        self::scheduleExpire($user);
+
+        // if owner !== user we also need to update the owners trash size
+        if ($owner !== $user) {
+            self::scheduleExpire($owner);
+        }
+
+        return $moveSuccessful;
+    }
+
+    /**
+     * Move file versions to trash so that they can be restored later
+     *
+     * @param string $filename of deleted file
+     * @param string $owner owner user id
+     * @param string $ownerPath path relative to the owner's home storage
+     * @param integer $timestamp when the file was deleted
+     */
+    private static function retainVersions($filename, $owner, $ownerPath, $timestamp) {
+        if (\OCP\App::isEnabled('files_versions') && !empty($ownerPath)) {
+
+            $user = User::getUser();
+            $rootView = new View('/');
+
+            if ($rootView->is_dir($owner . '/files_versions/' . $ownerPath)) {
+                if ($owner !== $user) {
+                    self::copy_recursive($owner . '/files_versions/' . $ownerPath, $owner . '/files_trashbin/versions/' . basename($ownerPath) . '.d' . $timestamp, $rootView);
+                }
+                self::move($rootView, $owner . '/files_versions/' . $ownerPath, $user . '/files_trashbin/versions/' . $filename . '.d' . $timestamp);
+            } else if ($versions = \OCA\Files_Versions\Storage::getVersions($owner, $ownerPath)) {
+
+                foreach ($versions as $v) {
+                    if ($owner !== $user) {
+                        self::copy($rootView, $owner . '/files_versions' . $v['path'] . '.v' . $v['version'], $owner . '/files_trashbin/versions/' . $v['name'] . '.v' . $v['version'] . '.d' . $timestamp);
+                    }
+                    self::move($rootView, $owner . '/files_versions' . $v['path'] . '.v' . $v['version'], $user . '/files_trashbin/versions/' . $filename . '.v' . $v['version'] . '.d' . $timestamp);
+                }
+            }
+        }
+    }
+
+    /**
+     * Move a file or folder on storage level
+     *
+     * @param View $view
+     * @param string $source
+     * @param string $target
+     * @return bool
+     */
+    private static function move(View $view, $source, $target) {
+        /** @var \OC\Files\Storage\Storage $sourceStorage */
+        list($sourceStorage, $sourceInternalPath) = $view->resolvePath($source);
+        /** @var \OC\Files\Storage\Storage $targetStorage */
+        list($targetStorage, $targetInternalPath) = $view->resolvePath($target);
+        /** @var \OC\Files\Storage\Storage $ownerTrashStorage */
+
+        $result = $targetStorage->moveFromStorage($sourceStorage, $sourceInternalPath, $targetInternalPath);
+        if ($result) {
+            $targetStorage->getUpdater()->renameFromStorage($sourceStorage, $sourceInternalPath, $targetInternalPath);
+        }
+        return $result;
+    }
+
+    /**
+     * Copy a file or folder on storage level
+     *
+     * @param View $view
+     * @param string $source
+     * @param string $target
+     * @return bool
+     */
+    private static function copy(View $view, $source, $target) {
+        /** @var \OC\Files\Storage\Storage $sourceStorage */
+        list($sourceStorage, $sourceInternalPath) = $view->resolvePath($source);
+        /** @var \OC\Files\Storage\Storage $targetStorage */
+        list($targetStorage, $targetInternalPath) = $view->resolvePath($target);
+        /** @var \OC\Files\Storage\Storage $ownerTrashStorage */
+
+        $result = $targetStorage->copyFromStorage($sourceStorage, $sourceInternalPath, $targetInternalPath);
+        if ($result) {
+            $targetStorage->getUpdater()->update($targetInternalPath);
+        }
+        return $result;
+    }
+
+    /**
+     * Restore a file or folder from trash bin
+     *
+     * @param string $file path to the deleted file/folder relative to "files_trashbin/files/",
+     * including the timestamp suffix ".d12345678"
+     * @param string $filename name of the file/folder
+     * @param int $timestamp time when the file/folder was deleted
+     *
+     * @return bool true on success, false otherwise
+     */
+    public static function restore($file, $filename, $timestamp) {
+        $user = User::getUser();
+        $view = new View('/' . $user);
+
+        $location = '';
+        if ($timestamp) {
+            $location = self::getLocation($user, $filename, $timestamp);
+            if ($location === false) {
+                \OCP\Util::writeLog('files_trashbin', 'trash bin database inconsistent! ($user: ' . $user . ' $filename: ' . $filename . ', $timestamp: ' . $timestamp . ')', \OCP\Util::ERROR);
+            } else {
+                // if location no longer exists, restore file in the root directory
+                if ($location !== '/' &&
+                    (!$view->is_dir('files/' . $location) ||
+                        !$view->isCreatable('files/' . $location))
+                ) {
+                    $location = '';
+                }
+            }
+        }
+
+        // we need a  extension in case a file/dir with the same name already exists
+        $uniqueFilename = self::getUniqueFilename($location, $filename, $view);
+
+        $source = Filesystem::normalizePath('files_trashbin/files/' . $file);
+        $target = Filesystem::normalizePath('files/' . $location . '/' . $uniqueFilename);
+        if (!$view->file_exists($source)) {
+            return false;
+        }
+        $mtime = $view->filemtime($source);
+
+        // restore file
+        $restoreResult = $view->rename($source, $target);
+
+        // handle the restore result
+        if ($restoreResult) {
+            $fakeRoot = $view->getRoot();
+            $view->chroot('/' . $user . '/files');
+            $view->touch('/' . $location . '/' . $uniqueFilename, $mtime);
+            $view->chroot($fakeRoot);
+            \OCP\Util::emitHook('\OCA\Files_Trashbin\Trashbin', 'post_restore', array('filePath' => Filesystem::normalizePath('/' . $location . '/' . $uniqueFilename),
+                'trashPath' => Filesystem::normalizePath($file)));
+
+            self::restoreVersions($view, $file, $filename, $uniqueFilename, $location, $timestamp);
+
+            if ($timestamp) {
+                $query = \OC_DB::prepare('DELETE FROM `*PREFIX*files_trash` WHERE `user`=? AND `id`=? AND `timestamp`=?');
+                $query->execute(array($user, $filename, $timestamp));
+            }
+
+            return true;
+        }
+
+        return false;
+    }
+
+    /**
+     * restore versions from trash bin
+     *
+     * @param View $view file view
+     * @param string $file complete path to file
+     * @param string $filename name of file once it was deleted
+     * @param string $uniqueFilename new file name to restore the file without overwriting existing files
+     * @param string $location location if file
+     * @param int $timestamp deletion time
+     * @return false|null
+     */
+    private static function restoreVersions(View $view, $file, $filename, $uniqueFilename, $location, $timestamp) {
+
+        if (\OCP\App::isEnabled('files_versions')) {
+
+            $user = User::getUser();
+            $rootView = new View('/');
+
+            $target = Filesystem::normalizePath('/' . $location . '/' . $uniqueFilename);
+
+            list($owner, $ownerPath) = self::getUidAndFilename($target);
+
+            // file has been deleted in between
+            if (empty($ownerPath)) {
+                return false;
+            }
+
+            if ($timestamp) {
+                $versionedFile = $filename;
+            } else {
+                $versionedFile = $file;
+            }
+
+            if ($view->is_dir('/files_trashbin/versions/' . $file)) {
+                $rootView->rename(Filesystem::normalizePath($user . '/files_trashbin/versions/' . $file), Filesystem::normalizePath($owner . '/files_versions/' . $ownerPath));
+            } else if ($versions = self::getVersionsFromTrash($versionedFile, $timestamp, $user)) {
+                foreach ($versions as $v) {
+                    if ($timestamp) {
+                        $rootView->rename($user . '/files_trashbin/versions/' . $versionedFile . '.v' . $v . '.d' . $timestamp, $owner . '/files_versions/' . $ownerPath . '.v' . $v);
+                    } else {
+                        $rootView->rename($user . '/files_trashbin/versions/' . $versionedFile . '.v' . $v, $owner . '/files_versions/' . $ownerPath . '.v' . $v);
+                    }
+                }
+            }
+        }
+    }
+
+    /**
+     * delete all files from the trash
+     */
+    public static function deleteAll() {
+        $user = User::getUser();
+        $userRoot = \OC::$server->getUserFolder($user)->getParent();
+        $view = new View('/' . $user);
+        $fileInfos = $view->getDirectoryContent('files_trashbin/files');
+
+        try {
+            $trash = $userRoot->get('files_trashbin');
+        } catch (NotFoundException $e) {
+            return false;
+        }
+
+        // Array to store the relative path in (after the file is deleted, the view won't be able to relativise the path anymore)
+        $filePaths = array();
+        foreach($fileInfos as $fileInfo){
+            $filePaths[] = $view->getRelativePath($fileInfo->getPath());
+        }
+        unset($fileInfos); // save memory
+
+        // Bulk PreDelete-Hook
+        \OC_Hook::emit('\OCP\Trashbin', 'preDeleteAll', array('paths' => $filePaths));
+
+        // Single-File Hooks
+        foreach($filePaths as $path){
+            self::emitTrashbinPreDelete($path);
+        }
+
+        // actual file deletion
+        $trash->delete();
+        $query = \OC_DB::prepare('DELETE FROM `*PREFIX*files_trash` WHERE `user`=?');
+        $query->execute(array($user));
+
+        // Bulk PostDelete-Hook
+        \OC_Hook::emit('\OCP\Trashbin', 'deleteAll', array('paths' => $filePaths));
+
+        // Single-File Hooks
+        foreach($filePaths as $path){
+            self::emitTrashbinPostDelete($path);
+        }
+
+        $trash = $userRoot->newFolder('files_trashbin');
+        $trash->newFolder('files');
+
+        return true;
+    }
+
+    /**
+     * wrapper function to emit the 'preDelete' hook of \OCP\Trashbin before a file is deleted
+     * @param string $path
+     */
+    protected static function emitTrashbinPreDelete($path){
+        \OC_Hook::emit('\OCP\Trashbin', 'preDelete', array('path' => $path));
+    }
+
+    /**
+     * wrapper function to emit the 'delete' hook of \OCP\Trashbin after a file has been deleted
+     * @param string $path
+     */
+    protected static function emitTrashbinPostDelete($path){
+        \OC_Hook::emit('\OCP\Trashbin', 'delete', array('path' => $path));
+    }
+
+    /**
+     * delete file from trash bin permanently
+     *
+     * @param string $filename path to the file
+     * @param string $user
+     * @param int $timestamp of deletion time
+     *
+     * @return int size of deleted files
+     */
+    public static function delete($filename, $user, $timestamp = null) {
+        $userRoot = \OC::$server->getUserFolder($user)->getParent();
+        $view = new View('/' . $user);
+        $size = 0;
+
+        if ($timestamp) {
+            $query = \OC_DB::prepare('DELETE FROM `*PREFIX*files_trash` WHERE `user`=? AND `id`=? AND `timestamp`=?');
+            $query->execute(array($user, $filename, $timestamp));
+            $file = $filename . '.d' . $timestamp;
+        } else {
+            $file = $filename;
+        }
+
+        $size += self::deleteVersions($view, $file, $filename, $timestamp, $user);
+
+        try {
+            $node = $userRoot->get('/files_trashbin/files/' . $file);
+        } catch (NotFoundException $e) {
+            return $size;
+        }
+
+        if ($node instanceof Folder) {
+            $size += self::calculateSize(new View('/' . $user . '/files_trashbin/files/' . $file));
+        } else if ($node instanceof File) {
+            $size += $view->filesize('/files_trashbin/files/' . $file);
+        }
+
+        self::emitTrashbinPreDelete('/files_trashbin/files/' . $file);
+        $node->delete();
+        self::emitTrashbinPostDelete('/files_trashbin/files/' . $file);
+
+        return $size;
+    }
+
+    /**
+     * @param View $view
+     * @param string $file
+     * @param string $filename
+     * @param integer|null $timestamp
+     * @param string $user
+     * @return int
+     */
+    private static function deleteVersions(View $view, $file, $filename, $timestamp, $user) {
+        $size = 0;
+        if (\OCP\App::isEnabled('files_versions')) {
+            if ($view->is_dir('files_trashbin/versions/' . $file)) {
+                $size += self::calculateSize(new View('/' . $user . '/files_trashbin/versions/' . $file));
+                $view->unlink('files_trashbin/versions/' . $file);
+            } else if ($versions = self::getVersionsFromTrash($filename, $timestamp, $user)) {
+                foreach ($versions as $v) {
+                    if ($timestamp) {
+                        $size += $view->filesize('/files_trashbin/versions/' . $filename . '.v' . $v . '.d' . $timestamp);
+                        $view->unlink('/files_trashbin/versions/' . $filename . '.v' . $v . '.d' . $timestamp);
+                    } else {
+                        $size += $view->filesize('/files_trashbin/versions/' . $filename . '.v' . $v);
+                        $view->unlink('/files_trashbin/versions/' . $filename . '.v' . $v);
+                    }
+                }
+            }
+        }
+        return $size;
+    }
+
+    /**
+     * check to see whether a file exists in trashbin
+     *
+     * @param string $filename path to the file
+     * @param int $timestamp of deletion time
+     * @return bool true if file exists, otherwise false
+     */
+    public static function file_exists($filename, $timestamp = null) {
+        $user = User::getUser();
+        $view = new View('/' . $user);
+
+        if ($timestamp) {
+            $filename = $filename . '.d' . $timestamp;
+        }
+
+        $target = Filesystem::normalizePath('files_trashbin/files/' . $filename);
+        return $view->file_exists($target);
+    }
+
+    /**
+     * deletes used space for trash bin in db if user was deleted
+     *
+     * @param string $uid id of deleted user
+     * @return bool result of db delete operation
+     */
+    public static function deleteUser($uid) {
+        $query = \OC_DB::prepare('DELETE FROM `*PREFIX*files_trash` WHERE `user`=?');
+        return $query->execute(array($uid));
+    }
+
+    /**
+     * calculate remaining free space for trash bin
+     *
+     * @param integer $trashbinSize current size of the trash bin
+     * @param string $user
+     * @return int available free space for trash bin
+     */
+    private static function calculateFreeSpace($trashbinSize, $user) {
+        $softQuota = true;
+        $userObject = \OC::$server->getUserManager()->get($user);
+        if(is_null($userObject)) {
+            return 0;
+        }
+        $quota = $userObject->getQuota();
+        if ($quota === null || $quota === 'none') {
+            $quota = Filesystem::free_space('/');
+            $softQuota = false;
+            // inf or unknown free space
+            if ($quota < 0) {
+                $quota = PHP_INT_MAX;
+            }
+        } else {
+            $quota = \OCP\Util::computerFileSize($quota);
+        }
+
+        // calculate available space for trash bin
+        // subtract size of files and current trash bin size from quota
+        if ($softQuota) {
+            $userFolder = \OC::$server->getUserFolder($user);
+            if(is_null($userFolder)) {
+                return 0;
+            }
+            $free = $quota - $userFolder->getSize(); // remaining free space for user
+            if ($free > 0) {
+                $availableSpace = ($free * self::DEFAULTMAXSIZE / 100) - $trashbinSize; // how much space can be used for versions
+            } else {
+                $availableSpace = $free - $trashbinSize;
+            }
+        } else {
+            $availableSpace = $quota;
+        }
+
+        return $availableSpace;
+    }
+
+    /**
+     * resize trash bin if necessary after a new file was added to Nextcloud
+     *
+     * @param string $user user id
+     */
+    public static function resizeTrash($user) {
+
+        $size = self::getTrashbinSize($user);
+
+        $freeSpace = self::calculateFreeSpace($size, $user);
+
+        if ($freeSpace < 0) {
+            self::scheduleExpire($user);
+        }
+    }
+
+    /**
+     * clean up the trash bin
+     *
+     * @param string $user
+     */
+    public static function expire($user) {
+        $trashBinSize = self::getTrashbinSize($user);
+        $availableSpace = self::calculateFreeSpace($trashBinSize, $user);
+
+        $dirContent = Helper::getTrashFiles('/', $user, 'mtime');
+
+        // delete all files older then $retention_obligation
+        list($delSize, $count) = self::deleteExpiredFiles($dirContent, $user);
+
+        $availableSpace += $delSize;
+
+        // delete files from trash until we meet the trash bin size limit again
+        self::deleteFiles(array_slice($dirContent, $count), $user, $availableSpace);
+    }
+
+    /**
+     * @param string $user
+     */
+    private static function scheduleExpire($user) {
+        // let the admin disable auto expire
+        $application = new Application();
+        $expiration = $application->getContainer()->query('Expiration');
+        if ($expiration->isEnabled()) {
+            \OC::$server->getCommandBus()->push(new Expire($user));
+        }
+    }
+
+    /**
+     * if the size limit for the trash bin is reached, we delete the oldest
+     * files in the trash bin until we meet the limit again
+     *
+     * @param array $files
+     * @param string $user
+     * @param int $availableSpace available disc space
+     * @return int size of deleted files
+     */
+    protected static function deleteFiles($files, $user, $availableSpace) {
+        $application = new Application();
+        $expiration = $application->getContainer()->query('Expiration');
+        $size = 0;
+
+        if ($availableSpace < 0) {
+            foreach ($files as $file) {
+                if ($availableSpace < 0 && $expiration->isExpired($file['mtime'], true)) {
+                    $tmp = self::delete($file['name'], $user, $file['mtime']);
+                    \OCP\Util::writeLog('files_trashbin', 'remove "' . $file['name'] . '" (' . $tmp . 'B) to meet the limit of trash bin size (50% of available quota)', \OCP\Util::INFO);
+                    $availableSpace += $tmp;
+                    $size += $tmp;
+                } else {
+                    break;
+                }
+            }
+        }
+        return $size;
+    }
+
+    /**
+     * delete files older then max storage time
+     *
+     * @param array $files list of files sorted by mtime
+     * @param string $user
+     * @return integer[] size of deleted files and number of deleted files
+     */
+    public static function deleteExpiredFiles($files, $user) {
+        $application = new Application();
+        $expiration = $application->getContainer()->query('Expiration');
+        $size = 0;
+        $count = 0;
+        foreach ($files as $file) {
+            $timestamp = $file['mtime'];
+            $filename = $file['name'];
+            if ($expiration->isExpired($timestamp)) {
+                $count++;
+                $size += self::delete($filename, $user, $timestamp);
+                \OC::$server->getLogger()->info(
+                    'Remove "' . $filename . '" from trashbin because it exceeds max retention obligation term.',
+                    ['app' => 'files_trashbin']
+                );
+            } else {
+                break;
+            }
+        }
+
+        return array($size, $count);
+    }
+
+    /**
+     * recursive copy to copy a whole directory
+     *
+     * @param string $source source path, relative to the users files directory
+     * @param string $destination destination path relative to the users root directoy
+     * @param View $view file view for the users root directory
+     * @return int
+     * @throws Exceptions\CopyRecursiveException
+     */
+    private static function copy_recursive($source, $destination, View $view) {
+        $size = 0;
+        if ($view->is_dir($source)) {
+            $view->mkdir($destination);
+            $view->touch($destination, $view->filemtime($source));
+            foreach ($view->getDirectoryContent($source) as $i) {
+                $pathDir = $source . '/' . $i['name'];
+                if ($view->is_dir($pathDir)) {
+                    $size += self::copy_recursive($pathDir, $destination . '/' . $i['name'], $view);
+                } else {
+                    $size += $view->filesize($pathDir);
+                    $result = $view->copy($pathDir, $destination . '/' . $i['name']);
+                    if (!$result) {
+                        throw new \OCA\Files_Trashbin\Exceptions\CopyRecursiveException();
+                    }
+                    $view->touch($destination . '/' . $i['name'], $view->filemtime($pathDir));
+                }
+            }
+        } else {
+            $size += $view->filesize($source);
+            $result = $view->copy($source, $destination);
+            if (!$result) {
+                throw new \OCA\Files_Trashbin\Exceptions\CopyRecursiveException();
+            }
+            $view->touch($destination, $view->filemtime($source));
+        }
+        return $size;
+    }
+
+    /**
+     * find all versions which belong to the file we want to restore
+     *
+     * @param string $filename name of the file which should be restored
+     * @param int $timestamp timestamp when the file was deleted
+     * @return array
+     */
+    private static function getVersionsFromTrash($filename, $timestamp, $user) {
+        $view = new View('/' . $user . '/files_trashbin/versions');
+        $versions = array();
+
+        //force rescan of versions, local storage may not have updated the cache
+        if (!self::$scannedVersions) {
+            /** @var \OC\Files\Storage\Storage $storage */
+            list($storage,) = $view->resolvePath('/');
+            $storage->getScanner()->scan('files_trashbin/versions');
+            self::$scannedVersions = true;
+        }
+
+        if ($timestamp) {
+            // fetch for old versions
+            $matches = $view->searchRaw($filename . '.v%.d' . $timestamp);
+            $offset = -strlen($timestamp) - 2;
+        } else {
+            $matches = $view->searchRaw($filename . '.v%');
+        }
+
+        if (is_array($matches)) {
+            foreach ($matches as $ma) {
+                if ($timestamp) {
+                    $parts = explode('.v', substr($ma['path'], 0, $offset));
+                    $versions[] = (end($parts));
+                } else {
+                    $parts = explode('.v', $ma);
+                    $versions[] = (end($parts));
+                }
+            }
+        }
+        return $versions;
+    }
+
+    /**
+     * find unique extension for restored file if a file with the same name already exists
+     *
+     * @param string $location where the file should be restored
+     * @param string $filename name of the file
+     * @param View $view filesystem view relative to users root directory
+     * @return string with unique extension
+     */
+    private static function getUniqueFilename($location, $filename, View $view) {
+        $ext = pathinfo($filename, PATHINFO_EXTENSION);
+        $name = pathinfo($filename, PATHINFO_FILENAME);
+        $l = \OC::$server->getL10N('files_trashbin');
+
+        $location = '/' . trim($location, '/');
+
+        // if extension is not empty we set a dot in front of it
+        if ($ext !== '') {
+            $ext = '.' . $ext;
+        }
+
+        if ($view->file_exists('files' . $location . '/' . $filename)) {
+            $i = 2;
+            $uniqueName = $name . " (" . $l->t("restored") . ")" . $ext;
+            while ($view->file_exists('files' . $location . '/' . $uniqueName)) {
+                $uniqueName = $name . " (" . $l->t("restored") . " " . $i . ")" . $ext;
+                $i++;
+            }
+
+            return $uniqueName;
+        }
+
+        return $filename;
+    }
+
+    /**
+     * get the size from a given root folder
+     *
+     * @param View $view file view on the root folder
+     * @return integer size of the folder
+     */
+    private static function calculateSize($view) {
+        $root = \OC::$server->getConfig()->getSystemValue('datadirectory', \OC::$SERVERROOT . '/data') . $view->getAbsolutePath('');
+        if (!file_exists($root)) {
+            return 0;
+        }
+        $iterator = new \RecursiveIteratorIterator(new \RecursiveDirectoryIterator($root), \RecursiveIteratorIterator::CHILD_FIRST);
+        $size = 0;
+
+        /**
+         * RecursiveDirectoryIterator on an NFS path isn't iterable with foreach
+         * This bug is fixed in PHP 5.5.9 or before
+         * See #8376
+         */
+        $iterator->rewind();
+        while ($iterator->valid()) {
+            $path = $iterator->current();
+            $relpath = substr($path, strlen($root) - 1);
+            if (!$view->is_dir($relpath)) {
+                $size += $view->filesize($relpath);
+            }
+            $iterator->next();
+        }
+        return $size;
+    }
+
+    /**
+     * get current size of trash bin from a given user
+     *
+     * @param string $user user who owns the trash bin
+     * @return integer trash bin size
+     */
+    private static function getTrashbinSize($user) {
+        $view = new View('/' . $user);
+        $fileInfo = $view->getFileInfo('/files_trashbin');
+        return isset($fileInfo['size']) ? $fileInfo['size'] : 0;
+    }
+
+    /**
+     * register hooks
+     */
+    public static function registerHooks() {
+        // create storage wrapper on setup
+        \OCP\Util::connectHook('OC_Filesystem', 'preSetup', 'OCA\Files_Trashbin\Storage', 'setupStorage');
+        //Listen to delete user signal
+        \OCP\Util::connectHook('OC_User', 'pre_deleteUser', 'OCA\Files_Trashbin\Hooks', 'deleteUser_hook');
+        //Listen to post write hook
+        \OCP\Util::connectHook('OC_Filesystem', 'post_write', 'OCA\Files_Trashbin\Hooks', 'post_write_hook');
+        // pre and post-rename, disable trash logic for the copy+unlink case
+        \OCP\Util::connectHook('OC_Filesystem', 'delete', 'OCA\Files_Trashbin\Trashbin', 'ensureFileScannedHook');
+        \OCP\Util::connectHook('OC_Filesystem', 'rename', 'OCA\Files_Trashbin\Storage', 'preRenameHook');
+        \OCP\Util::connectHook('OC_Filesystem', 'post_rename', 'OCA\Files_Trashbin\Storage', 'postRenameHook');
+    }
+
+    /**
+     * check if trash bin is empty for a given user
+     *
+     * @param string $user
+     * @return bool
+     */
+    public static function isEmpty($user) {
+
+        $view = new View('/' . $user . '/files_trashbin');
+        if ($view->is_dir('/files') && $dh = $view->opendir('/files')) {
+            while ($file = readdir($dh)) {
+                if (!Filesystem::isIgnoredDir($file)) {
+                    return false;
+                }
+            }
+        }
+        return true;
+    }
+
+    /**
+     * @param $path
+     * @return string
+     */
+    public static function preview_icon($path) {
+        return \OCP\Util::linkToRoute('core_ajax_trashbin_preview', array('x' => 32, 'y' => 32, 'file' => $path));
+    }
 }

Spacing +72 added lines, -72 removed lines

@@ -100,7 +100,7 @@ 
 		Filesystem::initMountPoints($uid);
 		if ($uid !== User::getUser()) {
 			$info = Filesystem::getFileInfo($filename);
-			$ownerView = new View('/' . $uid . '/files');
+			$ownerView = new View('/'.$uid.'/files');
 			try {
 				$filename = $ownerView->getPath($info['fileid']);
 			} catch (NotFoundException $e) {
@@ -151,7 +151,7 @@ 
 	}
 
 	private static function setUpTrash($user) {
-		$view = new View('/' . $user);
+		$view = new View('/'.$user);
 		if (!$view->is_dir('files_trashbin')) {
 			$view->mkdir('files_trashbin');
 		}
@@ -186,8 +186,8 @@ 
 
 		$view = new View('/');
 
-		$target = $user . '/files_trashbin/files/' . $targetFilename . '.d' . $timestamp;
-		$source = $owner . '/files_trashbin/files/' . $sourceFilename . '.d' . $timestamp;
+		$target = $user.'/files_trashbin/files/'.$targetFilename.'.d'.$timestamp;
+		$source = $owner.'/files_trashbin/files/'.$sourceFilename.'.d'.$timestamp;
 		self::copy_recursive($source, $target, $view);
 
 
@@ -221,9 +221,9 @@ 
 			$ownerPath = $file_path;
 		}
 
-		$ownerView = new View('/' . $owner);
+		$ownerView = new View('/'.$owner);
 		// file has been deleted in between
-		if (is_null($ownerPath) || $ownerPath === '' || !$ownerView->file_exists('/files/' . $ownerPath)) {
+		if (is_null($ownerPath) || $ownerPath === '' || !$ownerView->file_exists('/files/'.$ownerPath)) {
 			return true;
 		}
 
@@ -240,12 +240,12 @@ 
 		$timestamp = time();
 
 		// disable proxy to prevent recursive calls
-		$trashPath = '/files_trashbin/files/' . $filename . '.d' . $timestamp;
+		$trashPath = '/files_trashbin/files/'.$filename.'.d'.$timestamp;
 
 		/** @var \OC\Files\Storage\Storage $trashStorage */
 		list($trashStorage, $trashInternalPath) = $ownerView->resolvePath($trashPath);
 		/** @var \OC\Files\Storage\Storage $sourceStorage */
-		list($sourceStorage, $sourceInternalPath) = $ownerView->resolvePath('/files/' . $ownerPath);
+		list($sourceStorage, $sourceInternalPath) = $ownerView->resolvePath('/files/'.$ownerPath);
 		try {
 			$moveSuccessful = true;
 			if ($trashStorage->file_exists($trashInternalPath)) {
@@ -257,7 +257,7 @@ 
 			if ($trashStorage->file_exists($trashInternalPath)) {
 				$trashStorage->unlink($trashInternalPath);
 			}
-			\OCP\Util::writeLog('files_trashbin', 'Couldn\'t move ' . $file_path . ' to the trash bin', \OCP\Util::ERROR);
+			\OCP\Util::writeLog('files_trashbin', 'Couldn\'t move '.$file_path.' to the trash bin', \OCP\Util::ERROR);
 		}
 
 		if ($sourceStorage->file_exists($sourceInternalPath)) { // failed to delete the original file, abort
@@ -278,7 +278,7 @@ 
 				\OCP\Util::writeLog('files_trashbin', 'trash bin database couldn\'t be updated', \OCP\Util::ERROR);
 			}
 			\OCP\Util::emitHook('\OCA\Files_Trashbin\Trashbin', 'post_moveToTrash', array('filePath' => Filesystem::normalizePath($file_path),
-				'trashPath' => Filesystem::normalizePath($filename . '.d' . $timestamp)));
+				'trashPath' => Filesystem::normalizePath($filename.'.d'.$timestamp)));
 
 			self::retainVersions($filename, $owner, $ownerPath, $timestamp);
 
@@ -312,18 +312,18 @@ 
 			$user = User::getUser();
 			$rootView = new View('/');
 
-			if ($rootView->is_dir($owner . '/files_versions/' . $ownerPath)) {
+			if ($rootView->is_dir($owner.'/files_versions/'.$ownerPath)) {
 				if ($owner !== $user) {
-					self::copy_recursive($owner . '/files_versions/' . $ownerPath, $owner . '/files_trashbin/versions/' . basename($ownerPath) . '.d' . $timestamp, $rootView);
+					self::copy_recursive($owner.'/files_versions/'.$ownerPath, $owner.'/files_trashbin/versions/'.basename($ownerPath).'.d'.$timestamp, $rootView);
 				}
-				self::move($rootView, $owner . '/files_versions/' . $ownerPath, $user . '/files_trashbin/versions/' . $filename . '.d' . $timestamp);
+				self::move($rootView, $owner.'/files_versions/'.$ownerPath, $user.'/files_trashbin/versions/'.$filename.'.d'.$timestamp);
 			} else if ($versions = \OCA\Files_Versions\Storage::getVersions($owner, $ownerPath)) {
 
 				foreach ($versions as $v) {
 					if ($owner !== $user) {
-						self::copy($rootView, $owner . '/files_versions' . $v['path'] . '.v' . $v['version'], $owner . '/files_trashbin/versions/' . $v['name'] . '.v' . $v['version'] . '.d' . $timestamp);
+						self::copy($rootView, $owner.'/files_versions'.$v['path'].'.v'.$v['version'], $owner.'/files_trashbin/versions/'.$v['name'].'.v'.$v['version'].'.d'.$timestamp);
 					}
-					self::move($rootView, $owner . '/files_versions' . $v['path'] . '.v' . $v['version'], $user . '/files_trashbin/versions/' . $filename . '.v' . $v['version'] . '.d' . $timestamp);
+					self::move($rootView, $owner.'/files_versions'.$v['path'].'.v'.$v['version'], $user.'/files_trashbin/versions/'.$filename.'.v'.$v['version'].'.d'.$timestamp);
 				}
 			}
 		}
@@ -385,18 +385,18 @@ 
 	 */
 	public static function restore($file, $filename, $timestamp) {
 		$user = User::getUser();
-		$view = new View('/' . $user);
+		$view = new View('/'.$user);
 
 		$location = '';
 		if ($timestamp) {
 			$location = self::getLocation($user, $filename, $timestamp);
 			if ($location === false) {
-				\OCP\Util::writeLog('files_trashbin', 'trash bin database inconsistent! ($user: ' . $user . ' $filename: ' . $filename . ', $timestamp: ' . $timestamp . ')', \OCP\Util::ERROR);
+				\OCP\Util::writeLog('files_trashbin', 'trash bin database inconsistent! ($user: '.$user.' $filename: '.$filename.', $timestamp: '.$timestamp.')', \OCP\Util::ERROR);
 			} else {
 				// if location no longer exists, restore file in the root directory
 				if ($location !== '/' &&
-					(!$view->is_dir('files/' . $location) ||
-						!$view->isCreatable('files/' . $location))
+					(!$view->is_dir('files/'.$location) ||
+						!$view->isCreatable('files/'.$location))
 				) {
 					$location = '';
 				}
@@ -406,8 +406,8 @@ 
 		// we need a  extension in case a file/dir with the same name already exists
 		$uniqueFilename = self::getUniqueFilename($location, $filename, $view);
 
-		$source = Filesystem::normalizePath('files_trashbin/files/' . $file);
-		$target = Filesystem::normalizePath('files/' . $location . '/' . $uniqueFilename);
+		$source = Filesystem::normalizePath('files_trashbin/files/'.$file);
+		$target = Filesystem::normalizePath('files/'.$location.'/'.$uniqueFilename);
 		if (!$view->file_exists($source)) {
 			return false;
 		}
@@ -419,10 +419,10 @@ 
 		// handle the restore result
 		if ($restoreResult) {
 			$fakeRoot = $view->getRoot();
-			$view->chroot('/' . $user . '/files');
-			$view->touch('/' . $location . '/' . $uniqueFilename, $mtime);
+			$view->chroot('/'.$user.'/files');
+			$view->touch('/'.$location.'/'.$uniqueFilename, $mtime);
 			$view->chroot($fakeRoot);
-			\OCP\Util::emitHook('\OCA\Files_Trashbin\Trashbin', 'post_restore', array('filePath' => Filesystem::normalizePath('/' . $location . '/' . $uniqueFilename),
+			\OCP\Util::emitHook('\OCA\Files_Trashbin\Trashbin', 'post_restore', array('filePath' => Filesystem::normalizePath('/'.$location.'/'.$uniqueFilename),
 				'trashPath' => Filesystem::normalizePath($file)));
 
 			self::restoreVersions($view, $file, $filename, $uniqueFilename, $location, $timestamp);
@@ -456,7 +456,7 @@ 
 			$user = User::getUser();
 			$rootView = new View('/');
 
-			$target = Filesystem::normalizePath('/' . $location . '/' . $uniqueFilename);
+			$target = Filesystem::normalizePath('/'.$location.'/'.$uniqueFilename);
 
 			list($owner, $ownerPath) = self::getUidAndFilename($target);
 
@@ -471,14 +471,14 @@ 
 				$versionedFile = $file;
 			}
 
-			if ($view->is_dir('/files_trashbin/versions/' . $file)) {
-				$rootView->rename(Filesystem::normalizePath($user . '/files_trashbin/versions/' . $file), Filesystem::normalizePath($owner . '/files_versions/' . $ownerPath));
+			if ($view->is_dir('/files_trashbin/versions/'.$file)) {
+				$rootView->rename(Filesystem::normalizePath($user.'/files_trashbin/versions/'.$file), Filesystem::normalizePath($owner.'/files_versions/'.$ownerPath));
 			} else if ($versions = self::getVersionsFromTrash($versionedFile, $timestamp, $user)) {
 				foreach ($versions as $v) {
 					if ($timestamp) {
-						$rootView->rename($user . '/files_trashbin/versions/' . $versionedFile . '.v' . $v . '.d' . $timestamp, $owner . '/files_versions/' . $ownerPath . '.v' . $v);
+						$rootView->rename($user.'/files_trashbin/versions/'.$versionedFile.'.v'.$v.'.d'.$timestamp, $owner.'/files_versions/'.$ownerPath.'.v'.$v);
 					} else {
-						$rootView->rename($user . '/files_trashbin/versions/' . $versionedFile . '.v' . $v, $owner . '/files_versions/' . $ownerPath . '.v' . $v);
+						$rootView->rename($user.'/files_trashbin/versions/'.$versionedFile.'.v'.$v, $owner.'/files_versions/'.$ownerPath.'.v'.$v);
 					}
 				}
 			}
@@ -491,7 +491,7 @@ 
 	public static function deleteAll() {
 		$user = User::getUser();
 		$userRoot = \OC::$server->getUserFolder($user)->getParent();
-		$view = new View('/' . $user);
+		$view = new View('/'.$user);
 		$fileInfos = $view->getDirectoryContent('files_trashbin/files');
 
 		try {
@@ -502,7 +502,7 @@ 
 
 		// Array to store the relative path in (after the file is deleted, the view won't be able to relativise the path anymore)
 		$filePaths = array();
-		foreach($fileInfos as $fileInfo){
+		foreach ($fileInfos as $fileInfo) {
 			$filePaths[] = $view->getRelativePath($fileInfo->getPath());
 		}
 		unset($fileInfos); // save memory
@@ -511,7 +511,7 @@ 
 		\OC_Hook::emit('\OCP\Trashbin', 'preDeleteAll', array('paths' => $filePaths));
 
 		// Single-File Hooks
-		foreach($filePaths as $path){
+		foreach ($filePaths as $path) {
 			self::emitTrashbinPreDelete($path);
 		}
 
@@ -524,7 +524,7 @@ 
 		\OC_Hook::emit('\OCP\Trashbin', 'deleteAll', array('paths' => $filePaths));
 
 		// Single-File Hooks
-		foreach($filePaths as $path){
+		foreach ($filePaths as $path) {
 			self::emitTrashbinPostDelete($path);
 		}
 
@@ -538,7 +538,7 @@ 
 	 * wrapper function to emit the 'preDelete' hook of \OCP\Trashbin before a file is deleted
 	 * @param string $path
 	 */
-	protected static function emitTrashbinPreDelete($path){
+	protected static function emitTrashbinPreDelete($path) {
 		\OC_Hook::emit('\OCP\Trashbin', 'preDelete', array('path' => $path));
 	}
 
@@ -546,7 +546,7 @@ 
 	 * wrapper function to emit the 'delete' hook of \OCP\Trashbin after a file has been deleted
 	 * @param string $path
 	 */
-	protected static function emitTrashbinPostDelete($path){
+	protected static function emitTrashbinPostDelete($path) {
 		\OC_Hook::emit('\OCP\Trashbin', 'delete', array('path' => $path));
 	}
 
@@ -561,13 +561,13 @@ 
 	 */
 	public static function delete($filename, $user, $timestamp = null) {
 		$userRoot = \OC::$server->getUserFolder($user)->getParent();
-		$view = new View('/' . $user);
+		$view = new View('/'.$user);
 		$size = 0;
 
 		if ($timestamp) {
 			$query = \OC_DB::prepare('DELETE FROM `*PREFIX*files_trash` WHERE `user`=? AND `id`=? AND `timestamp`=?');
 			$query->execute(array($user, $filename, $timestamp));
-			$file = $filename . '.d' . $timestamp;
+			$file = $filename.'.d'.$timestamp;
 		} else {
 			$file = $filename;
 		}
@@ -575,20 +575,20 @@ 
 		$size += self::deleteVersions($view, $file, $filename, $timestamp, $user);
 
 		try {
-			$node = $userRoot->get('/files_trashbin/files/' . $file);
+			$node = $userRoot->get('/files_trashbin/files/'.$file);
 		} catch (NotFoundException $e) {
 			return $size;
 		}
 
 		if ($node instanceof Folder) {
-			$size += self::calculateSize(new View('/' . $user . '/files_trashbin/files/' . $file));
+			$size += self::calculateSize(new View('/'.$user.'/files_trashbin/files/'.$file));
 		} else if ($node instanceof File) {
-			$size += $view->filesize('/files_trashbin/files/' . $file);
+			$size += $view->filesize('/files_trashbin/files/'.$file);
 		}
 
-		self::emitTrashbinPreDelete('/files_trashbin/files/' . $file);
+		self::emitTrashbinPreDelete('/files_trashbin/files/'.$file);
 		$node->delete();
-		self::emitTrashbinPostDelete('/files_trashbin/files/' . $file);
+		self::emitTrashbinPostDelete('/files_trashbin/files/'.$file);
 
 		return $size;
 	}
@@ -604,17 +604,17 @@ 
 	private static function deleteVersions(View $view, $file, $filename, $timestamp, $user) {
 		$size = 0;
 		if (\OCP\App::isEnabled('files_versions')) {
-			if ($view->is_dir('files_trashbin/versions/' . $file)) {
-				$size += self::calculateSize(new View('/' . $user . '/files_trashbin/versions/' . $file));
-				$view->unlink('files_trashbin/versions/' . $file);
+			if ($view->is_dir('files_trashbin/versions/'.$file)) {
+				$size += self::calculateSize(new View('/'.$user.'/files_trashbin/versions/'.$file));
+				$view->unlink('files_trashbin/versions/'.$file);
 			} else if ($versions = self::getVersionsFromTrash($filename, $timestamp, $user)) {
 				foreach ($versions as $v) {
 					if ($timestamp) {
-						$size += $view->filesize('/files_trashbin/versions/' . $filename . '.v' . $v . '.d' . $timestamp);
-						$view->unlink('/files_trashbin/versions/' . $filename . '.v' . $v . '.d' . $timestamp);
+						$size += $view->filesize('/files_trashbin/versions/'.$filename.'.v'.$v.'.d'.$timestamp);
+						$view->unlink('/files_trashbin/versions/'.$filename.'.v'.$v.'.d'.$timestamp);
 					} else {
-						$size += $view->filesize('/files_trashbin/versions/' . $filename . '.v' . $v);
-						$view->unlink('/files_trashbin/versions/' . $filename . '.v' . $v);
+						$size += $view->filesize('/files_trashbin/versions/'.$filename.'.v'.$v);
+						$view->unlink('/files_trashbin/versions/'.$filename.'.v'.$v);
 					}
 				}
 			}
@@ -631,13 +631,13 @@ 
 	 */
 	public static function file_exists($filename, $timestamp = null) {
 		$user = User::getUser();
-		$view = new View('/' . $user);
+		$view = new View('/'.$user);
 
 		if ($timestamp) {
-			$filename = $filename . '.d' . $timestamp;
+			$filename = $filename.'.d'.$timestamp;
 		}
 
-		$target = Filesystem::normalizePath('files_trashbin/files/' . $filename);
+		$target = Filesystem::normalizePath('files_trashbin/files/'.$filename);
 		return $view->file_exists($target);
 	}
 
@@ -662,7 +662,7 @@ 
 	private static function calculateFreeSpace($trashbinSize, $user) {
 		$softQuota = true;
 		$userObject = \OC::$server->getUserManager()->get($user);
-		if(is_null($userObject)) {
+		if (is_null($userObject)) {
 			return 0;
 		}
 		$quota = $userObject->getQuota();
@@ -681,7 +681,7 @@ 
 		// subtract size of files and current trash bin size from quota
 		if ($softQuota) {
 			$userFolder = \OC::$server->getUserFolder($user);
-			if(is_null($userFolder)) {
+			if (is_null($userFolder)) {
 				return 0;
 			}
 			$free = $quota - $userFolder->getSize(); // remaining free space for user
@@ -763,7 +763,7 @@ 
 			foreach ($files as $file) {
 				if ($availableSpace < 0 && $expiration->isExpired($file['mtime'], true)) {
 					$tmp = self::delete($file['name'], $user, $file['mtime']);
-					\OCP\Util::writeLog('files_trashbin', 'remove "' . $file['name'] . '" (' . $tmp . 'B) to meet the limit of trash bin size (50% of available quota)', \OCP\Util::INFO);
+					\OCP\Util::writeLog('files_trashbin', 'remove "'.$file['name'].'" ('.$tmp.'B) to meet the limit of trash bin size (50% of available quota)', \OCP\Util::INFO);
 					$availableSpace += $tmp;
 					$size += $tmp;
 				} else {
@@ -793,7 +793,7 @@ 
 				$count++;
 				$size += self::delete($filename, $user, $timestamp);
 				\OC::$server->getLogger()->info(
-					'Remove "' . $filename . '" from trashbin because it exceeds max retention obligation term.',
+					'Remove "'.$filename.'" from trashbin because it exceeds max retention obligation term.',
 					['app' => 'files_trashbin']
 				);
 			} else {
@@ -819,16 +819,16 @@ 
 			$view->mkdir($destination);
 			$view->touch($destination, $view->filemtime($source));
 			foreach ($view->getDirectoryContent($source) as $i) {
-				$pathDir = $source . '/' . $i['name'];
+				$pathDir = $source.'/'.$i['name'];
 				if ($view->is_dir($pathDir)) {
-					$size += self::copy_recursive($pathDir, $destination . '/' . $i['name'], $view);
+					$size += self::copy_recursive($pathDir, $destination.'/'.$i['name'], $view);
 				} else {
 					$size += $view->filesize($pathDir);
-					$result = $view->copy($pathDir, $destination . '/' . $i['name']);
+					$result = $view->copy($pathDir, $destination.'/'.$i['name']);
 					if (!$result) {
 						throw new \OCA\Files_Trashbin\Exceptions\CopyRecursiveException();
 					}
-					$view->touch($destination . '/' . $i['name'], $view->filemtime($pathDir));
+					$view->touch($destination.'/'.$i['name'], $view->filemtime($pathDir));
 				}
 			}
 		} else {
@@ -850,7 +850,7 @@ 
 	 * @return array
 	 */
 	private static function getVersionsFromTrash($filename, $timestamp, $user) {
-		$view = new View('/' . $user . '/files_trashbin/versions');
+		$view = new View('/'.$user.'/files_trashbin/versions');
 		$versions = array();
 
 		//force rescan of versions, local storage may not have updated the cache
@@ -863,10 +863,10 @@ 
 
 		if ($timestamp) {
 			// fetch for old versions
-			$matches = $view->searchRaw($filename . '.v%.d' . $timestamp);
+			$matches = $view->searchRaw($filename.'.v%.d'.$timestamp);
 			$offset = -strlen($timestamp) - 2;
 		} else {
-			$matches = $view->searchRaw($filename . '.v%');
+			$matches = $view->searchRaw($filename.'.v%');
 		}
 
 		if (is_array($matches)) {
@@ -896,18 +896,18 @@ 
 		$name = pathinfo($filename, PATHINFO_FILENAME);
 		$l = \OC::$server->getL10N('files_trashbin');
 
-		$location = '/' . trim($location, '/');
+		$location = '/'.trim($location, '/');
 
 		// if extension is not empty we set a dot in front of it
 		if ($ext !== '') {
-			$ext = '.' . $ext;
+			$ext = '.'.$ext;
 		}
 
-		if ($view->file_exists('files' . $location . '/' . $filename)) {
+		if ($view->file_exists('files'.$location.'/'.$filename)) {
 			$i = 2;
-			$uniqueName = $name . " (" . $l->t("restored") . ")" . $ext;
-			while ($view->file_exists('files' . $location . '/' . $uniqueName)) {
-				$uniqueName = $name . " (" . $l->t("restored") . " " . $i . ")" . $ext;
+			$uniqueName = $name." (".$l->t("restored").")".$ext;
+			while ($view->file_exists('files'.$location.'/'.$uniqueName)) {
+				$uniqueName = $name." (".$l->t("restored")." ".$i.")".$ext;
 				$i++;
 			}
 
@@ -924,7 +924,7 @@ 
 	 * @return integer size of the folder
 	 */
 	private static function calculateSize($view) {
-		$root = \OC::$server->getConfig()->getSystemValue('datadirectory', \OC::$SERVERROOT . '/data') . $view->getAbsolutePath('');
+		$root = \OC::$server->getConfig()->getSystemValue('datadirectory', \OC::$SERVERROOT.'/data').$view->getAbsolutePath('');
 		if (!file_exists($root)) {
 			return 0;
 		}
@@ -955,7 +955,7 @@ 
 	 * @return integer trash bin size
 	 */
 	private static function getTrashbinSize($user) {
-		$view = new View('/' . $user);
+		$view = new View('/'.$user);
 		$fileInfo = $view->getFileInfo('/files_trashbin');
 		return isset($fileInfo['size']) ? $fileInfo['size'] : 0;
 	}
@@ -984,7 +984,7 @@ 
 	 */
 	public static function isEmpty($user) {
 
-		$view = new View('/' . $user . '/files_trashbin');
+		$view = new View('/'.$user.'/files_trashbin');
 		if ($view->is_dir('/files') && $dh = $view->opendir('/files')) {
 			while ($file = readdir($dh)) {
 				if (!Filesystem::isIgnoredDir($file)) {