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<?php
/**
* @copyright Copyright (c) 2016, ownCloud, Inc.
*
* @author Arthur Schiwon <blizzz@arthur-schiwon.de>
* @author Bart Visscher <bartv@thisnet.nl>
* @author Benjamin Liles <benliles@arch.tamu.edu>
* @author Christian Berendt <berendt@b1-systems.de>
* @author Christopher Bartz <bartz@dkrz.de>
* @author Daniel Tosello <tosello.daniel@gmail.com>
* @author Felix Moeller <mail@felixmoeller.de>
* @author Joas Schilling <coding@schilljs.com>
* @author Jörn Friedrich Dreyer <jfd@butonic.de>
* @author Lukas Reschke <lukas@statuscode.ch>
* @author Martin Mattel <martin.mattel@diemattels.at>
* @author Morris Jobke <hey@morrisjobke.de>
* @author Philipp Kapfer <philipp.kapfer@gmx.at>
* @author Robin Appelman <robin@icewind.nl>
* @author Robin McCorkell <robin@mccorkell.me.uk>
* @author Thomas Müller <thomas.mueller@tmit.eu>
* @author Tim Dettrick <t.dettrick@uq.edu.au>
* @author Vincent Petry <pvince81@owncloud.com>
*
* @license AGPL-3.0
*
* This code is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License, version 3,
* along with this program. If not, see <http://www.gnu.org/licenses/>
*
*/
namespace OCA\Files_External\Lib\Storage;
use Guzzle\Http\Url;
use Guzzle\Http\Exception\ClientErrorResponseException;
use Icewind\Streams\CallbackWrapper;
use Icewind\Streams\IteratorDirectory;
use Icewind\Streams\RetryWrapper;
use OpenCloud;
use OpenCloud\Common\Exceptions;
use OpenCloud\OpenStack;
use OpenCloud\Rackspace;
use OpenCloud\ObjectStore\Resource\DataObject;
use OpenCloud\ObjectStore\Exception;
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 RetryWrapper::wrap($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;
}
}