nextcloud / server

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

Indentation +596 added lines, -596 removed lines

@@ -48,601 +48,601 @@
 
 class Swift extends \OC\Files\Storage\Common {
 
-	/**
-	 * @var \OpenCloud\ObjectStore\Service
-	 */
-	private $connection;
-	/**
-	 * @var \OpenCloud\ObjectStore\Resource\Container
-	 */
-	private $container;
-	/**
-	 * @var \OpenCloud\OpenStack
-	 */
-	private $anchor;
-	/**
-	 * @var string
-	 */
-	private $bucket;
-	/**
-	 * Connection parameters
-	 *
-	 * @var array
-	 */
-	private $params;
-
-	/** @var string  */
-	private $id;
-
-	/**
-	 * Key value cache mapping path to data object. Maps path to
-	 * \OpenCloud\OpenStack\ObjectStorage\Resource\DataObject for existing
-	 * paths and path to false for not existing paths.
-	 * @var \OCP\ICache
-	 */
-	private $objectCache;
-
-	/**
-	 * @param string $path
-	 */
-	private function normalizePath($path) {
-		$path = trim($path, '/');
-
-		if (!$path) {
-			$path = '.';
-		}
-
-		$path = str_replace('#', '%23', $path);
-
-		return $path;
-	}
-
-	const SUBCONTAINER_FILE = '.subcontainers';
-
-	/**
-	 * translate directory path to container name
-	 *
-	 * @param string $path
-	 * @return string
-	 */
-
-	/**
-	 * Fetches an object from the API.
-	 * If the object is cached already or a
-	 * failed "doesn't exist" response was cached,
-	 * that one will be returned.
-	 *
-	 * @param string $path
-	 * @return \OpenCloud\ObjectStore\Resource\DataObject|bool object
-	 * or false if the object did not exist
-	 */
-	private function fetchObject($path) {
-		if ($this->objectCache->hasKey($path)) {
-			// might be "false" if object did not exist from last check
-			return $this->objectCache->get($path);
-		}
-		try {
-			$object = $this->getContainer()->getPartialObject($path);
-			$this->objectCache->set($path, $object);
-			return $object;
-		} catch (ClientErrorResponseException $e) {
-			// this exception happens when the object does not exist, which
-			// is expected in most cases
-			$this->objectCache->set($path, false);
-			return false;
-		} catch (ClientErrorResponseException $e) {
-			// Expected response is "404 Not Found", so only log if it isn't
-			if ($e->getResponse()->getStatusCode() !== 404) {
-				\OCP\Util::writeLog('files_external', $e->getMessage(), \OCP\Util::ERROR);
-			}
-			return false;
-		}
-	}
-
-	/**
-	 * Returns whether the given path exists.
-	 *
-	 * @param string $path
-	 *
-	 * @return bool true if the object exist, false otherwise
-	 */
-	private function doesObjectExist($path) {
-		return $this->fetchObject($path) !== false;
-	}
-
-	public function __construct($params) {
-		if ((empty($params['key']) and empty($params['password']))
-			or empty($params['user']) or empty($params['bucket'])
-			or empty($params['region'])
-		) {
-			throw new \Exception("API Key or password, Username, Bucket and Region have to be configured.");
-		}
-
-		$this->id = 'swift::' . $params['user'] . md5($params['bucket']);
-
-		$bucketUrl = Url::factory($params['bucket']);
-		if ($bucketUrl->isAbsolute()) {
-			$this->bucket = end(($bucketUrl->getPathSegments()));
-			$params['endpoint_url'] = $bucketUrl->addPath('..')->normalizePath();
-		} else {
-			$this->bucket = $params['bucket'];
-		}
-
-		if (empty($params['url'])) {
-			$params['url'] = 'https://identity.api.rackspacecloud.com/v2.0/';
-		}
-
-		if (empty($params['service_name'])) {
-			$params['service_name'] = 'cloudFiles';
-		}
-
-		$this->params = $params;
-		// FIXME: private class...
-		$this->objectCache = new \OC\Cache\CappedMemoryCache();
-	}
-
-	public function mkdir($path) {
-		$path = $this->normalizePath($path);
-
-		if ($this->is_dir($path)) {
-			return false;
-		}
-
-		if ($path !== '.') {
-			$path .= '/';
-		}
-
-		try {
-			$customHeaders = array('content-type' => 'httpd/unix-directory');
-			$metadataHeaders = DataObject::stockHeaders(array());
-			$allHeaders = $customHeaders + $metadataHeaders;
-			$this->getContainer()->uploadObject($path, '', $allHeaders);
-			// invalidate so that the next access gets the real object
-			// with all properties
-			$this->objectCache->remove($path);
-		} catch (Exceptions\CreateUpdateError $e) {
-			\OCP\Util::writeLog('files_external', $e->getMessage(), \OCP\Util::ERROR);
-			return false;
-		}
-
-		return true;
-	}
-
-	public function file_exists($path) {
-		$path = $this->normalizePath($path);
-
-		if ($path !== '.' && $this->is_dir($path)) {
-			$path .= '/';
-		}
-
-		return $this->doesObjectExist($path);
-	}
-
-	public function rmdir($path) {
-		$path = $this->normalizePath($path);
-
-		if (!$this->is_dir($path) || !$this->isDeletable($path)) {
-			return false;
-		}
-
-		$dh = $this->opendir($path);
-		while ($file = readdir($dh)) {
-			if (\OC\Files\Filesystem::isIgnoredDir($file)) {
-				continue;
-			}
-
-			if ($this->is_dir($path . '/' . $file)) {
-				$this->rmdir($path . '/' . $file);
-			} else {
-				$this->unlink($path . '/' . $file);
-			}
-		}
-
-		try {
-			$this->getContainer()->dataObject()->setName($path . '/')->delete();
-			$this->objectCache->remove($path . '/');
-		} catch (Exceptions\DeleteError $e) {
-			\OCP\Util::writeLog('files_external', $e->getMessage(), \OCP\Util::ERROR);
-			return false;
-		}
-
-		return true;
-	}
-
-	public function opendir($path) {
-		$path = $this->normalizePath($path);
-
-		if ($path === '.') {
-			$path = '';
-		} else {
-			$path .= '/';
-		}
-
-		$path = str_replace('%23', '#', $path); // the prefix is sent as a query param, so revert the encoding of #
-
-		try {
-			$files = array();
-			/** @var OpenCloud\Common\Collection $objects */
-			$objects = $this->getContainer()->objectList(array(
-				'prefix' => $path,
-				'delimiter' => '/'
-			));
-
-			/** @var OpenCloud\ObjectStore\Resource\DataObject $object */
-			foreach ($objects as $object) {
-				$file = basename($object->getName());
-				if ($file !== basename($path) && $file !== '.') {
-					$files[] = $file;
-				}
-			}
-
-			return IteratorDirectory::wrap($files);
-		} catch (\Exception $e) {
-			\OCP\Util::writeLog('files_external', $e->getMessage(), \OCP\Util::ERROR);
-			return false;
-		}
-
-	}
-
-	public function stat($path) {
-		$path = $this->normalizePath($path);
-
-		if ($path === '.') {
-			$path = '';
-		} else if ($this->is_dir($path)) {
-			$path .= '/';
-		}
-
-		try {
-			/** @var DataObject $object */
-			$object = $this->fetchObject($path);
-			if (!$object) {
-				return false;
-			}
-		} catch (ClientErrorResponseException $e) {
-			\OCP\Util::writeLog('files_external', $e->getMessage(), \OCP\Util::ERROR);
-			return false;
-		}
-
-		$dateTime = \DateTime::createFromFormat(\DateTime::RFC1123, $object->getLastModified());
-		if ($dateTime !== false) {
-			$mtime = $dateTime->getTimestamp();
-		} else {
-			$mtime = null;
-		}
-		$objectMetadata = $object->getMetadata();
-		$metaTimestamp = $objectMetadata->getProperty('timestamp');
-		if (isset($metaTimestamp)) {
-			$mtime = $metaTimestamp;
-		}
-
-		if (!empty($mtime)) {
-			$mtime = floor($mtime);
-		}
-
-		$stat = array();
-		$stat['size'] = (int)$object->getContentLength();
-		$stat['mtime'] = $mtime;
-		$stat['atime'] = time();
-		return $stat;
-	}
-
-	public function filetype($path) {
-		$path = $this->normalizePath($path);
-
-		if ($path !== '.' && $this->doesObjectExist($path)) {
-			return 'file';
-		}
-
-		if ($path !== '.') {
-			$path .= '/';
-		}
-
-		if ($this->doesObjectExist($path)) {
-			return 'dir';
-		}
-	}
-
-	public function unlink($path) {
-		$path = $this->normalizePath($path);
-
-		if ($this->is_dir($path)) {
-			return $this->rmdir($path);
-		}
-
-		try {
-			$this->getContainer()->dataObject()->setName($path)->delete();
-			$this->objectCache->remove($path);
-			$this->objectCache->remove($path . '/');
-		} catch (ClientErrorResponseException $e) {
-			if ($e->getResponse()->getStatusCode() !== 404) {
-				\OCP\Util::writeLog('files_external', $e->getMessage(), \OCP\Util::ERROR);
-			}
-			return false;
-		}
-
-		return true;
-	}
-
-	public function fopen($path, $mode) {
-		$path = $this->normalizePath($path);
-
-		switch ($mode) {
-			case 'a':
-			case 'ab':
-			case 'a+':
-				return false;
-			case 'r':
-			case 'rb':
-				try {
-					$c = $this->getContainer();
-					$streamFactory = new \Guzzle\Stream\PhpStreamRequestFactory();
-					/** @var \OpenCloud\Common\Http\Client $client */
-					$client = $c->getClient();
-					$streamInterface = $streamFactory->fromRequest($client->get($c->getUrl($path)));
-					$streamInterface->rewind();
-					$stream = $streamInterface->getStream();
-					stream_context_set_option($stream, 'swift','content', $streamInterface);
-					if(!strrpos($streamInterface
-						->getMetaData('wrapper_data')[0], '404 Not Found')) {
-						return $stream;
-					}
-					return false;
-				} catch (\Guzzle\Http\Exception\BadResponseException $e) {
-					\OCP\Util::writeLog('files_external', $e->getMessage(), \OCP\Util::ERROR);
-					return false;
-				}
-			case 'w':
-			case 'wb':
-			case 'r+':
-			case 'w+':
-			case 'wb+':
-			case 'x':
-			case 'x+':
-			case 'c':
-			case 'c+':
-				if (strrpos($path, '.') !== false) {
-					$ext = substr($path, strrpos($path, '.'));
-				} else {
-					$ext = '';
-				}
-				$tmpFile = \OCP\Files::tmpFile($ext);
-				// Fetch existing file if required
-				if ($mode[0] !== 'w' && $this->file_exists($path)) {
-					if ($mode[0] === 'x') {
-						// File cannot already exist
-						return false;
-					}
-					$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, $path);
-				});
-		}
-	}
-
-	public function touch($path, $mtime = null) {
-		$path = $this->normalizePath($path);
-		if (is_null($mtime)) {
-			$mtime = time();
-		}
-		$metadata = array('timestamp' => $mtime);
-		if ($this->file_exists($path)) {
-			if ($this->is_dir($path) && $path !== '.') {
-				$path .= '/';
-			}
-
-			$object = $this->fetchObject($path);
-			if ($object->saveMetadata($metadata)) {
-				// invalidate target object to force repopulation on fetch
-				$this->objectCache->remove($path);
-			}
-			return true;
-		} else {
-			$mimeType = \OC::$server->getMimeTypeDetector()->detectPath($path);
-			$customHeaders = array('content-type' => $mimeType);
-			$metadataHeaders = DataObject::stockHeaders($metadata);
-			$allHeaders = $customHeaders + $metadataHeaders;
-			$this->getContainer()->uploadObject($path, '', $allHeaders);
-			// invalidate target object to force repopulation on fetch
-			$this->objectCache->remove($path);
-			return true;
-		}
-	}
-
-	public function copy($path1, $path2) {
-		$path1 = $this->normalizePath($path1);
-		$path2 = $this->normalizePath($path2);
-
-		$fileType = $this->filetype($path1);
-		if ($fileType === 'file') {
-
-			// make way
-			$this->unlink($path2);
-
-			try {
-				$source = $this->fetchObject($path1);
-				$source->copy($this->bucket . '/' . $path2);
-				// invalidate target object to force repopulation on fetch
-				$this->objectCache->remove($path2);
-				$this->objectCache->remove($path2 . '/');
-			} catch (ClientErrorResponseException $e) {
-				\OCP\Util::writeLog('files_external', $e->getMessage(), \OCP\Util::ERROR);
-				return false;
-			}
-
-		} else if ($fileType === 'dir') {
-
-			// make way
-			$this->unlink($path2);
-
-			try {
-				$source = $this->fetchObject($path1 . '/');
-				$source->copy($this->bucket . '/' . $path2 . '/');
-				// invalidate target object to force repopulation on fetch
-				$this->objectCache->remove($path2);
-				$this->objectCache->remove($path2 . '/');
-			} catch (ClientErrorResponseException $e) {
-				\OCP\Util::writeLog('files_external', $e->getMessage(), \OCP\Util::ERROR);
-				return false;
-			}
-
-			$dh = $this->opendir($path1);
-			while ($file = readdir($dh)) {
-				if (\OC\Files\Filesystem::isIgnoredDir($file)) {
-					continue;
-				}
-
-				$source = $path1 . '/' . $file;
-				$target = $path2 . '/' . $file;
-				$this->copy($source, $target);
-			}
-
-		} else {
-			//file does not exist
-			return false;
-		}
-
-		return true;
-	}
-
-	public function rename($path1, $path2) {
-		$path1 = $this->normalizePath($path1);
-		$path2 = $this->normalizePath($path2);
-
-		$fileType = $this->filetype($path1);
-
-		if ($fileType === 'dir' || $fileType === 'file') {
-			// copy
-			if ($this->copy($path1, $path2) === false) {
-				return false;
-			}
-
-			// cleanup
-			if ($this->unlink($path1) === false) {
-				$this->unlink($path2);
-				return false;
-			}
-
-			return true;
-		}
-
-		return false;
-	}
-
-	public function getId() {
-		return $this->id;
-	}
-
-	/**
-	 * Returns the connection
-	 *
-	 * @return OpenCloud\ObjectStore\Service connected client
-	 * @throws \Exception if connection could not be made
-	 */
-	public function getConnection() {
-		if (!is_null($this->connection)) {
-			return $this->connection;
-		}
-
-		$settings = array(
-			'username' => $this->params['user'],
-		);
-
-		if (!empty($this->params['password'])) {
-			$settings['password'] = $this->params['password'];
-		} else if (!empty($this->params['key'])) {
-			$settings['apiKey'] = $this->params['key'];
-		}
-
-		if (!empty($this->params['tenant'])) {
-			$settings['tenantName'] = $this->params['tenant'];
-		}
-
-		if (!empty($this->params['timeout'])) {
-			$settings['timeout'] = $this->params['timeout'];
-		}
-
-		if (isset($settings['apiKey'])) {
-			$this->anchor = new Rackspace($this->params['url'], $settings);
-		} else {
-			$this->anchor = new OpenStack($this->params['url'], $settings);
-		}
-
-		$connection = $this->anchor->objectStoreService($this->params['service_name'], $this->params['region']);
-
-		if (!empty($this->params['endpoint_url'])) {
-			$endpoint = $connection->getEndpoint();
-			$endpoint->setPublicUrl($this->params['endpoint_url']);
-			$endpoint->setPrivateUrl($this->params['endpoint_url']);
-			$connection->setEndpoint($endpoint);
-		}
-
-		$this->connection = $connection;
-
-		return $this->connection;
-	}
-
-	/**
-	 * Returns the initialized object store container.
-	 *
-	 * @return OpenCloud\ObjectStore\Resource\Container
-	 */
-	public function getContainer() {
-		if (!is_null($this->container)) {
-			return $this->container;
-		}
-
-		try {
-			$this->container = $this->getConnection()->getContainer($this->bucket);
-		} catch (ClientErrorResponseException $e) {
-			$this->container = $this->getConnection()->createContainer($this->bucket);
-		}
-
-		if (!$this->file_exists('.')) {
-			$this->mkdir('.');
-		}
-
-		return $this->container;
-	}
-
-	public function writeBack($tmpFile, $path) {
-		$fileData = fopen($tmpFile, 'r');
-		$this->getContainer()->uploadObject($path, $fileData);
-		// invalidate target object to force repopulation on fetch
-		$this->objectCache->remove($path);
-		unlink($tmpFile);
-	}
-
-	public function hasUpdated($path, $time) {
-		if ($this->is_file($path)) {
-			return parent::hasUpdated($path, $time);
-		}
-		$path = $this->normalizePath($path);
-		$dh = $this->opendir($path);
-		$content = array();
-		while (($file = readdir($dh)) !== false) {
-			$content[] = $file;
-		}
-		if ($path === '.') {
-			$path = '';
-		}
-		$cachedContent = $this->getCache()->getFolderContents($path);
-		$cachedNames = array_map(function ($content) {
-			return $content['name'];
-		}, $cachedContent);
-		sort($cachedNames);
-		sort($content);
-		return $cachedNames !== $content;
-	}
-
-	/**
-	 * check if curl is installed
-	 */
-	public static function checkDependencies() {
-		return true;
-	}
+    /**
+     * @var \OpenCloud\ObjectStore\Service
+     */
+    private $connection;
+    /**
+     * @var \OpenCloud\ObjectStore\Resource\Container
+     */
+    private $container;
+    /**
+     * @var \OpenCloud\OpenStack
+     */
+    private $anchor;
+    /**
+     * @var string
+     */
+    private $bucket;
+    /**
+     * Connection parameters
+     *
+     * @var array
+     */
+    private $params;
+
+    /** @var string  */
+    private $id;
+
+    /**
+     * Key value cache mapping path to data object. Maps path to
+     * \OpenCloud\OpenStack\ObjectStorage\Resource\DataObject for existing
+     * paths and path to false for not existing paths.
+     * @var \OCP\ICache
+     */
+    private $objectCache;
+
+    /**
+     * @param string $path
+     */
+    private function normalizePath($path) {
+        $path = trim($path, '/');
+
+        if (!$path) {
+            $path = '.';
+        }
+
+        $path = str_replace('#', '%23', $path);
+
+        return $path;
+    }
+
+    const SUBCONTAINER_FILE = '.subcontainers';
+
+    /**
+     * translate directory path to container name
+     *
+     * @param string $path
+     * @return string
+     */
+
+    /**
+     * Fetches an object from the API.
+     * If the object is cached already or a
+     * failed "doesn't exist" response was cached,
+     * that one will be returned.
+     *
+     * @param string $path
+     * @return \OpenCloud\ObjectStore\Resource\DataObject|bool object
+     * or false if the object did not exist
+     */
+    private function fetchObject($path) {
+        if ($this->objectCache->hasKey($path)) {
+            // might be "false" if object did not exist from last check
+            return $this->objectCache->get($path);
+        }
+        try {
+            $object = $this->getContainer()->getPartialObject($path);
+            $this->objectCache->set($path, $object);
+            return $object;
+        } catch (ClientErrorResponseException $e) {
+            // this exception happens when the object does not exist, which
+            // is expected in most cases
+            $this->objectCache->set($path, false);
+            return false;
+        } catch (ClientErrorResponseException $e) {
+            // Expected response is "404 Not Found", so only log if it isn't
+            if ($e->getResponse()->getStatusCode() !== 404) {
+                \OCP\Util::writeLog('files_external', $e->getMessage(), \OCP\Util::ERROR);
+            }
+            return false;
+        }
+    }
+
+    /**
+     * Returns whether the given path exists.
+     *
+     * @param string $path
+     *
+     * @return bool true if the object exist, false otherwise
+     */
+    private function doesObjectExist($path) {
+        return $this->fetchObject($path) !== false;
+    }
+
+    public function __construct($params) {
+        if ((empty($params['key']) and empty($params['password']))
+            or empty($params['user']) or empty($params['bucket'])
+            or empty($params['region'])
+        ) {
+            throw new \Exception("API Key or password, Username, Bucket and Region have to be configured.");
+        }
+
+        $this->id = 'swift::' . $params['user'] . md5($params['bucket']);
+
+        $bucketUrl = Url::factory($params['bucket']);
+        if ($bucketUrl->isAbsolute()) {
+            $this->bucket = end(($bucketUrl->getPathSegments()));
+            $params['endpoint_url'] = $bucketUrl->addPath('..')->normalizePath();
+        } else {
+            $this->bucket = $params['bucket'];
+        }
+
+        if (empty($params['url'])) {
+            $params['url'] = 'https://identity.api.rackspacecloud.com/v2.0/';
+        }
+
+        if (empty($params['service_name'])) {
+            $params['service_name'] = 'cloudFiles';
+        }
+
+        $this->params = $params;
+        // FIXME: private class...
+        $this->objectCache = new \OC\Cache\CappedMemoryCache();
+    }
+
+    public function mkdir($path) {
+        $path = $this->normalizePath($path);
+
+        if ($this->is_dir($path)) {
+            return false;
+        }
+
+        if ($path !== '.') {
+            $path .= '/';
+        }
+
+        try {
+            $customHeaders = array('content-type' => 'httpd/unix-directory');
+            $metadataHeaders = DataObject::stockHeaders(array());
+            $allHeaders = $customHeaders + $metadataHeaders;
+            $this->getContainer()->uploadObject($path, '', $allHeaders);
+            // invalidate so that the next access gets the real object
+            // with all properties
+            $this->objectCache->remove($path);
+        } catch (Exceptions\CreateUpdateError $e) {
+            \OCP\Util::writeLog('files_external', $e->getMessage(), \OCP\Util::ERROR);
+            return false;
+        }
+
+        return true;
+    }
+
+    public function file_exists($path) {
+        $path = $this->normalizePath($path);
+
+        if ($path !== '.' && $this->is_dir($path)) {
+            $path .= '/';
+        }
+
+        return $this->doesObjectExist($path);
+    }
+
+    public function rmdir($path) {
+        $path = $this->normalizePath($path);
+
+        if (!$this->is_dir($path) || !$this->isDeletable($path)) {
+            return false;
+        }
+
+        $dh = $this->opendir($path);
+        while ($file = readdir($dh)) {
+            if (\OC\Files\Filesystem::isIgnoredDir($file)) {
+                continue;
+            }
+
+            if ($this->is_dir($path . '/' . $file)) {
+                $this->rmdir($path . '/' . $file);
+            } else {
+                $this->unlink($path . '/' . $file);
+            }
+        }
+
+        try {
+            $this->getContainer()->dataObject()->setName($path . '/')->delete();
+            $this->objectCache->remove($path . '/');
+        } catch (Exceptions\DeleteError $e) {
+            \OCP\Util::writeLog('files_external', $e->getMessage(), \OCP\Util::ERROR);
+            return false;
+        }
+
+        return true;
+    }
+
+    public function opendir($path) {
+        $path = $this->normalizePath($path);
+
+        if ($path === '.') {
+            $path = '';
+        } else {
+            $path .= '/';
+        }
+
+        $path = str_replace('%23', '#', $path); // the prefix is sent as a query param, so revert the encoding of #
+
+        try {
+            $files = array();
+            /** @var OpenCloud\Common\Collection $objects */
+            $objects = $this->getContainer()->objectList(array(
+                'prefix' => $path,
+                'delimiter' => '/'
+            ));
+
+            /** @var OpenCloud\ObjectStore\Resource\DataObject $object */
+            foreach ($objects as $object) {
+                $file = basename($object->getName());
+                if ($file !== basename($path) && $file !== '.') {
+                    $files[] = $file;
+                }
+            }
+
+            return IteratorDirectory::wrap($files);
+        } catch (\Exception $e) {
+            \OCP\Util::writeLog('files_external', $e->getMessage(), \OCP\Util::ERROR);
+            return false;
+        }
+
+    }
+
+    public function stat($path) {
+        $path = $this->normalizePath($path);
+
+        if ($path === '.') {
+            $path = '';
+        } else if ($this->is_dir($path)) {
+            $path .= '/';
+        }
+
+        try {
+            /** @var DataObject $object */
+            $object = $this->fetchObject($path);
+            if (!$object) {
+                return false;
+            }
+        } catch (ClientErrorResponseException $e) {
+            \OCP\Util::writeLog('files_external', $e->getMessage(), \OCP\Util::ERROR);
+            return false;
+        }
+
+        $dateTime = \DateTime::createFromFormat(\DateTime::RFC1123, $object->getLastModified());
+        if ($dateTime !== false) {
+            $mtime = $dateTime->getTimestamp();
+        } else {
+            $mtime = null;
+        }
+        $objectMetadata = $object->getMetadata();
+        $metaTimestamp = $objectMetadata->getProperty('timestamp');
+        if (isset($metaTimestamp)) {
+            $mtime = $metaTimestamp;
+        }
+
+        if (!empty($mtime)) {
+            $mtime = floor($mtime);
+        }
+
+        $stat = array();
+        $stat['size'] = (int)$object->getContentLength();
+        $stat['mtime'] = $mtime;
+        $stat['atime'] = time();
+        return $stat;
+    }
+
+    public function filetype($path) {
+        $path = $this->normalizePath($path);
+
+        if ($path !== '.' && $this->doesObjectExist($path)) {
+            return 'file';
+        }
+
+        if ($path !== '.') {
+            $path .= '/';
+        }
+
+        if ($this->doesObjectExist($path)) {
+            return 'dir';
+        }
+    }
+
+    public function unlink($path) {
+        $path = $this->normalizePath($path);
+
+        if ($this->is_dir($path)) {
+            return $this->rmdir($path);
+        }
+
+        try {
+            $this->getContainer()->dataObject()->setName($path)->delete();
+            $this->objectCache->remove($path);
+            $this->objectCache->remove($path . '/');
+        } catch (ClientErrorResponseException $e) {
+            if ($e->getResponse()->getStatusCode() !== 404) {
+                \OCP\Util::writeLog('files_external', $e->getMessage(), \OCP\Util::ERROR);
+            }
+            return false;
+        }
+
+        return true;
+    }
+
+    public function fopen($path, $mode) {
+        $path = $this->normalizePath($path);
+
+        switch ($mode) {
+            case 'a':
+            case 'ab':
+            case 'a+':
+                return false;
+            case 'r':
+            case 'rb':
+                try {
+                    $c = $this->getContainer();
+                    $streamFactory = new \Guzzle\Stream\PhpStreamRequestFactory();
+                    /** @var \OpenCloud\Common\Http\Client $client */
+                    $client = $c->getClient();
+                    $streamInterface = $streamFactory->fromRequest($client->get($c->getUrl($path)));
+                    $streamInterface->rewind();
+                    $stream = $streamInterface->getStream();
+                    stream_context_set_option($stream, 'swift','content', $streamInterface);
+                    if(!strrpos($streamInterface
+                        ->getMetaData('wrapper_data')[0], '404 Not Found')) {
+                        return $stream;
+                    }
+                    return false;
+                } catch (\Guzzle\Http\Exception\BadResponseException $e) {
+                    \OCP\Util::writeLog('files_external', $e->getMessage(), \OCP\Util::ERROR);
+                    return false;
+                }
+            case 'w':
+            case 'wb':
+            case 'r+':
+            case 'w+':
+            case 'wb+':
+            case 'x':
+            case 'x+':
+            case 'c':
+            case 'c+':
+                if (strrpos($path, '.') !== false) {
+                    $ext = substr($path, strrpos($path, '.'));
+                } else {
+                    $ext = '';
+                }
+                $tmpFile = \OCP\Files::tmpFile($ext);
+                // Fetch existing file if required
+                if ($mode[0] !== 'w' && $this->file_exists($path)) {
+                    if ($mode[0] === 'x') {
+                        // File cannot already exist
+                        return false;
+                    }
+                    $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, $path);
+                });
+        }
+    }
+
+    public function touch($path, $mtime = null) {
+        $path = $this->normalizePath($path);
+        if (is_null($mtime)) {
+            $mtime = time();
+        }
+        $metadata = array('timestamp' => $mtime);
+        if ($this->file_exists($path)) {
+            if ($this->is_dir($path) && $path !== '.') {
+                $path .= '/';
+            }
+
+            $object = $this->fetchObject($path);
+            if ($object->saveMetadata($metadata)) {
+                // invalidate target object to force repopulation on fetch
+                $this->objectCache->remove($path);
+            }
+            return true;
+        } else {
+            $mimeType = \OC::$server->getMimeTypeDetector()->detectPath($path);
+            $customHeaders = array('content-type' => $mimeType);
+            $metadataHeaders = DataObject::stockHeaders($metadata);
+            $allHeaders = $customHeaders + $metadataHeaders;
+            $this->getContainer()->uploadObject($path, '', $allHeaders);
+            // invalidate target object to force repopulation on fetch
+            $this->objectCache->remove($path);
+            return true;
+        }
+    }
+
+    public function copy($path1, $path2) {
+        $path1 = $this->normalizePath($path1);
+        $path2 = $this->normalizePath($path2);
+
+        $fileType = $this->filetype($path1);
+        if ($fileType === 'file') {
+
+            // make way
+            $this->unlink($path2);
+
+            try {
+                $source = $this->fetchObject($path1);
+                $source->copy($this->bucket . '/' . $path2);
+                // invalidate target object to force repopulation on fetch
+                $this->objectCache->remove($path2);
+                $this->objectCache->remove($path2 . '/');
+            } catch (ClientErrorResponseException $e) {
+                \OCP\Util::writeLog('files_external', $e->getMessage(), \OCP\Util::ERROR);
+                return false;
+            }
+
+        } else if ($fileType === 'dir') {
+
+            // make way
+            $this->unlink($path2);
+
+            try {
+                $source = $this->fetchObject($path1 . '/');
+                $source->copy($this->bucket . '/' . $path2 . '/');
+                // invalidate target object to force repopulation on fetch
+                $this->objectCache->remove($path2);
+                $this->objectCache->remove($path2 . '/');
+            } catch (ClientErrorResponseException $e) {
+                \OCP\Util::writeLog('files_external', $e->getMessage(), \OCP\Util::ERROR);
+                return false;
+            }
+
+            $dh = $this->opendir($path1);
+            while ($file = readdir($dh)) {
+                if (\OC\Files\Filesystem::isIgnoredDir($file)) {
+                    continue;
+                }
+
+                $source = $path1 . '/' . $file;
+                $target = $path2 . '/' . $file;
+                $this->copy($source, $target);
+            }
+
+        } else {
+            //file does not exist
+            return false;
+        }
+
+        return true;
+    }
+
+    public function rename($path1, $path2) {
+        $path1 = $this->normalizePath($path1);
+        $path2 = $this->normalizePath($path2);
+
+        $fileType = $this->filetype($path1);
+
+        if ($fileType === 'dir' || $fileType === 'file') {
+            // copy
+            if ($this->copy($path1, $path2) === false) {
+                return false;
+            }
+
+            // cleanup
+            if ($this->unlink($path1) === false) {
+                $this->unlink($path2);
+                return false;
+            }
+
+            return true;
+        }
+
+        return false;
+    }
+
+    public function getId() {
+        return $this->id;
+    }
+
+    /**
+     * Returns the connection
+     *
+     * @return OpenCloud\ObjectStore\Service connected client
+     * @throws \Exception if connection could not be made
+     */
+    public function getConnection() {
+        if (!is_null($this->connection)) {
+            return $this->connection;
+        }
+
+        $settings = array(
+            'username' => $this->params['user'],
+        );
+
+        if (!empty($this->params['password'])) {
+            $settings['password'] = $this->params['password'];
+        } else if (!empty($this->params['key'])) {
+            $settings['apiKey'] = $this->params['key'];
+        }
+
+        if (!empty($this->params['tenant'])) {
+            $settings['tenantName'] = $this->params['tenant'];
+        }
+
+        if (!empty($this->params['timeout'])) {
+            $settings['timeout'] = $this->params['timeout'];
+        }
+
+        if (isset($settings['apiKey'])) {
+            $this->anchor = new Rackspace($this->params['url'], $settings);
+        } else {
+            $this->anchor = new OpenStack($this->params['url'], $settings);
+        }
+
+        $connection = $this->anchor->objectStoreService($this->params['service_name'], $this->params['region']);
+
+        if (!empty($this->params['endpoint_url'])) {
+            $endpoint = $connection->getEndpoint();
+            $endpoint->setPublicUrl($this->params['endpoint_url']);
+            $endpoint->setPrivateUrl($this->params['endpoint_url']);
+            $connection->setEndpoint($endpoint);
+        }
+
+        $this->connection = $connection;
+
+        return $this->connection;
+    }
+
+    /**
+     * Returns the initialized object store container.
+     *
+     * @return OpenCloud\ObjectStore\Resource\Container
+     */
+    public function getContainer() {
+        if (!is_null($this->container)) {
+            return $this->container;
+        }
+
+        try {
+            $this->container = $this->getConnection()->getContainer($this->bucket);
+        } catch (ClientErrorResponseException $e) {
+            $this->container = $this->getConnection()->createContainer($this->bucket);
+        }
+
+        if (!$this->file_exists('.')) {
+            $this->mkdir('.');
+        }
+
+        return $this->container;
+    }
+
+    public function writeBack($tmpFile, $path) {
+        $fileData = fopen($tmpFile, 'r');
+        $this->getContainer()->uploadObject($path, $fileData);
+        // invalidate target object to force repopulation on fetch
+        $this->objectCache->remove($path);
+        unlink($tmpFile);
+    }
+
+    public function hasUpdated($path, $time) {
+        if ($this->is_file($path)) {
+            return parent::hasUpdated($path, $time);
+        }
+        $path = $this->normalizePath($path);
+        $dh = $this->opendir($path);
+        $content = array();
+        while (($file = readdir($dh)) !== false) {
+            $content[] = $file;
+        }
+        if ($path === '.') {
+            $path = '';
+        }
+        $cachedContent = $this->getCache()->getFolderContents($path);
+        $cachedNames = array_map(function ($content) {
+            return $content['name'];
+        }, $cachedContent);
+        sort($cachedNames);
+        sort($content);
+        return $cachedNames !== $content;
+    }
+
+    /**
+     * check if curl is installed
+     */
+    public static function checkDependencies() {
+        return true;
+    }
 
 }