659 lines
16 KiB
PHP
659 lines
16 KiB
PHP
<?php
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/**
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* @copyright Copyright (c) 2016, ownCloud, Inc.
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*
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* @author Bart Visscher <bartv@thisnet.nl>
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* @author Benjamin Liles <benliles@arch.tamu.edu>
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* @author Christian Berendt <berendt@b1-systems.de>
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* @author Daniel Tosello <tosello.daniel@gmail.com>
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* @author Felix Moeller <mail@felixmoeller.de>
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* @author Jörn Friedrich Dreyer <jfd@butonic.de>
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* @author Martin Mattel <martin.mattel@diemattels.at>
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* @author Morris Jobke <hey@morrisjobke.de>
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* @author Philipp Kapfer <philipp.kapfer@gmx.at>
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* @author Robin Appelman <robin@icewind.nl>
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* @author Robin McCorkell <robin@mccorkell.me.uk>
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* @author Thomas Müller <thomas.mueller@tmit.eu>
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* @author Tim Dettrick <t.dettrick@uq.edu.au>
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* @author Vincent Petry <pvince81@owncloud.com>
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*
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* @license AGPL-3.0
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*
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* This code is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License, version 3,
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License, version 3,
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* along with this program. If not, see <http://www.gnu.org/licenses/>
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*
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*/
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namespace OCA\Files_External\Lib\Storage;
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use Guzzle\Http\Url;
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use Guzzle\Http\Exception\ClientErrorResponseException;
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use Icewind\Streams\IteratorDirectory;
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use OpenCloud;
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use OpenCloud\Common\Exceptions;
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use OpenCloud\OpenStack;
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use OpenCloud\Rackspace;
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use OpenCloud\ObjectStore\Resource\DataObject;
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use OpenCloud\ObjectStore\Exception;
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class Swift extends \OC\Files\Storage\Common {
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/**
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* @var \OpenCloud\ObjectStore\Service
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*/
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private $connection;
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/**
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* @var \OpenCloud\ObjectStore\Resource\Container
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*/
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private $container;
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/**
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* @var \OpenCloud\OpenStack
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*/
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private $anchor;
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/**
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* @var string
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*/
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private $bucket;
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/**
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* Connection parameters
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*
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* @var array
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*/
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private $params;
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/** @var string */
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private $id;
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/**
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* @var array
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*/
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private static $tmpFiles = array();
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/**
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* Key value cache mapping path to data object. Maps path to
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* \OpenCloud\OpenStack\ObjectStorage\Resource\DataObject for existing
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* paths and path to false for not existing paths.
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* @var \OCP\ICache
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*/
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private $objectCache;
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/**
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* @param string $path
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*/
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private function normalizePath($path) {
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$path = trim($path, '/');
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if (!$path) {
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$path = '.';
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}
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$path = str_replace('#', '%23', $path);
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return $path;
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}
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const SUBCONTAINER_FILE = '.subcontainers';
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/**
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* translate directory path to container name
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*
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* @param string $path
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* @return string
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*/
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/**
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* Fetches an object from the API.
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* If the object is cached already or a
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* failed "doesn't exist" response was cached,
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* that one will be returned.
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*
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* @param string $path
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* @return \OpenCloud\OpenStack\ObjectStorage\Resource\DataObject|bool object
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* or false if the object did not exist
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*/
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private function fetchObject($path) {
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if ($this->objectCache->hasKey($path)) {
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// might be "false" if object did not exist from last check
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return $this->objectCache->get($path);
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}
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try {
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$object = $this->getContainer()->getPartialObject($path);
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$this->objectCache->set($path, $object);
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return $object;
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} catch (ClientErrorResponseException $e) {
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// this exception happens when the object does not exist, which
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// is expected in most cases
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$this->objectCache->set($path, false);
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return false;
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} catch (ClientErrorResponseException $e) {
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// Expected response is "404 Not Found", so only log if it isn't
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if ($e->getResponse()->getStatusCode() !== 404) {
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\OCP\Util::writeLog('files_external', $e->getMessage(), \OCP\Util::ERROR);
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}
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return false;
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}
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}
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/**
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* Returns whether the given path exists.
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*
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* @param string $path
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*
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* @return bool true if the object exist, false otherwise
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*/
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private function doesObjectExist($path) {
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return $this->fetchObject($path) !== false;
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}
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public function __construct($params) {
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if ((empty($params['key']) and empty($params['password']))
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or empty($params['user']) or empty($params['bucket'])
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or empty($params['region'])
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) {
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throw new \Exception("API Key or password, Username, Bucket and Region have to be configured.");
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}
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$this->id = 'swift::' . $params['user'] . md5($params['bucket']);
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$bucketUrl = Url::factory($params['bucket']);
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if ($bucketUrl->isAbsolute()) {
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$this->bucket = end(($bucketUrl->getPathSegments()));
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$params['endpoint_url'] = $bucketUrl->addPath('..')->normalizePath();
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} else {
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$this->bucket = $params['bucket'];
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}
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if (empty($params['url'])) {
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$params['url'] = 'https://identity.api.rackspacecloud.com/v2.0/';
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}
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if (empty($params['service_name'])) {
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$params['service_name'] = 'cloudFiles';
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}
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$this->params = $params;
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// FIXME: private class...
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$this->objectCache = new \OC\Cache\CappedMemoryCache();
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}
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public function mkdir($path) {
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$path = $this->normalizePath($path);
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if ($this->is_dir($path)) {
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return false;
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}
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if ($path !== '.') {
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$path .= '/';
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}
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try {
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$customHeaders = array('content-type' => 'httpd/unix-directory');
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$metadataHeaders = DataObject::stockHeaders(array());
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$allHeaders = $customHeaders + $metadataHeaders;
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$this->getContainer()->uploadObject($path, '', $allHeaders);
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// invalidate so that the next access gets the real object
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// with all properties
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$this->objectCache->remove($path);
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} catch (Exceptions\CreateUpdateError $e) {
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\OCP\Util::writeLog('files_external', $e->getMessage(), \OCP\Util::ERROR);
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return false;
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}
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return true;
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}
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public function file_exists($path) {
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$path = $this->normalizePath($path);
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if ($path !== '.' && $this->is_dir($path)) {
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$path .= '/';
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}
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return $this->doesObjectExist($path);
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}
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public function rmdir($path) {
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$path = $this->normalizePath($path);
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if (!$this->is_dir($path) || !$this->isDeletable($path)) {
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return false;
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}
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$dh = $this->opendir($path);
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while ($file = readdir($dh)) {
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if (\OC\Files\Filesystem::isIgnoredDir($file)) {
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continue;
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}
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if ($this->is_dir($path . '/' . $file)) {
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$this->rmdir($path . '/' . $file);
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} else {
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$this->unlink($path . '/' . $file);
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}
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}
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try {
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$this->getContainer()->dataObject()->setName($path . '/')->delete();
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$this->objectCache->remove($path . '/');
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} catch (Exceptions\DeleteError $e) {
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\OCP\Util::writeLog('files_external', $e->getMessage(), \OCP\Util::ERROR);
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return false;
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}
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return true;
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}
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public function opendir($path) {
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$path = $this->normalizePath($path);
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if ($path === '.') {
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$path = '';
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} else {
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$path .= '/';
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}
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$path = str_replace('%23', '#', $path); // the prefix is sent as a query param, so revert the encoding of #
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try {
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$files = array();
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/** @var OpenCloud\Common\Collection $objects */
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$objects = $this->getContainer()->objectList(array(
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'prefix' => $path,
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'delimiter' => '/'
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));
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/** @var OpenCloud\ObjectStore\Resource\DataObject $object */
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foreach ($objects as $object) {
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$file = basename($object->getName());
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if ($file !== basename($path)) {
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$files[] = $file;
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}
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}
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return IteratorDirectory::wrap($files);
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} catch (\Exception $e) {
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\OCP\Util::writeLog('files_external', $e->getMessage(), \OCP\Util::ERROR);
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return false;
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}
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}
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public function stat($path) {
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$path = $this->normalizePath($path);
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if ($path === '.') {
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$path = '';
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} else if ($this->is_dir($path)) {
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$path .= '/';
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}
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try {
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/** @var DataObject $object */
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$object = $this->fetchObject($path);
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if (!$object) {
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return false;
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}
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} catch (ClientErrorResponseException $e) {
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\OCP\Util::writeLog('files_external', $e->getMessage(), \OCP\Util::ERROR);
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return false;
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}
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$dateTime = \DateTime::createFromFormat(\DateTime::RFC1123, $object->getLastModified());
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if ($dateTime !== false) {
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$mtime = $dateTime->getTimestamp();
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} else {
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$mtime = null;
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}
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$objectMetadata = $object->getMetadata();
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$metaTimestamp = $objectMetadata->getProperty('timestamp');
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if (isset($metaTimestamp)) {
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$mtime = $metaTimestamp;
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}
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if (!empty($mtime)) {
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$mtime = floor($mtime);
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}
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$stat = array();
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$stat['size'] = (int)$object->getContentLength();
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$stat['mtime'] = $mtime;
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$stat['atime'] = time();
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return $stat;
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}
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public function filetype($path) {
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$path = $this->normalizePath($path);
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if ($path !== '.' && $this->doesObjectExist($path)) {
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return 'file';
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}
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if ($path !== '.') {
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$path .= '/';
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}
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if ($this->doesObjectExist($path)) {
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return 'dir';
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}
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}
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public function unlink($path) {
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$path = $this->normalizePath($path);
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if ($this->is_dir($path)) {
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return $this->rmdir($path);
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}
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try {
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$this->getContainer()->dataObject()->setName($path)->delete();
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$this->objectCache->remove($path);
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$this->objectCache->remove($path . '/');
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} catch (ClientErrorResponseException $e) {
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if ($e->getResponse()->getStatusCode() !== 404) {
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\OCP\Util::writeLog('files_external', $e->getMessage(), \OCP\Util::ERROR);
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}
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return false;
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}
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return true;
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}
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public function fopen($path, $mode) {
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$path = $this->normalizePath($path);
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switch ($mode) {
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case 'r':
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case 'rb':
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try {
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$c = $this->getContainer();
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$streamFactory = new \Guzzle\Stream\PhpStreamRequestFactory();
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$streamInterface = $streamFactory->fromRequest(
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$c->getClient()
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->get($c->getUrl($path)));
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$streamInterface->rewind();
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$stream = $streamInterface->getStream();
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stream_context_set_option($stream, 'swift','content', $streamInterface);
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if(!strrpos($streamInterface
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->getMetaData('wrapper_data')[0], '404 Not Found')) {
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return $stream;
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}
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return false;
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} catch (\Guzzle\Http\Exception\BadResponseException $e) {
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\OCP\Util::writeLog('files_external', $e->getMessage(), \OCP\Util::ERROR);
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return false;
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}
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case 'w':
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case 'wb':
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case 'a':
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case 'ab':
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case 'r+':
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case 'w+':
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case 'wb+':
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case 'a+':
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case 'x':
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case 'x+':
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case 'c':
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case 'c+':
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if (strrpos($path, '.') !== false) {
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$ext = substr($path, strrpos($path, '.'));
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} else {
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$ext = '';
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}
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$tmpFile = \OCP\Files::tmpFile($ext);
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\OC\Files\Stream\Close::registerCallback($tmpFile, array($this, 'writeBack'));
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// Fetch existing file if required
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if ($mode[0] !== 'w' && $this->file_exists($path)) {
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if ($mode[0] === 'x') {
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// File cannot already exist
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return false;
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}
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$source = $this->fopen($path, 'r');
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file_put_contents($tmpFile, $source);
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// Seek to end if required
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if ($mode[0] === 'a') {
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fseek($tmpFile, 0, SEEK_END);
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}
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}
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self::$tmpFiles[$tmpFile] = $path;
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return fopen('close://' . $tmpFile, $mode);
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}
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}
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public function touch($path, $mtime = null) {
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$path = $this->normalizePath($path);
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if (is_null($mtime)) {
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$mtime = time();
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}
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$metadata = array('timestamp' => $mtime);
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if ($this->file_exists($path)) {
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if ($this->is_dir($path) && $path != '.') {
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$path .= '/';
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}
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$object = $this->fetchObject($path);
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if ($object->saveMetadata($metadata)) {
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// invalidate target object to force repopulation on fetch
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$this->objectCache->remove($path);
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}
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return true;
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} else {
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$mimeType = \OC::$server->getMimeTypeDetector()->detectPath($path);
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$customHeaders = array('content-type' => $mimeType);
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$metadataHeaders = DataObject::stockHeaders($metadata);
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$allHeaders = $customHeaders + $metadataHeaders;
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$this->getContainer()->uploadObject($path, '', $allHeaders);
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// invalidate target object to force repopulation on fetch
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$this->objectCache->remove($path);
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return true;
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}
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}
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public function copy($path1, $path2) {
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$path1 = $this->normalizePath($path1);
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$path2 = $this->normalizePath($path2);
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$fileType = $this->filetype($path1);
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if ($fileType === 'file') {
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// make way
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$this->unlink($path2);
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try {
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$source = $this->fetchObject($path1);
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$source->copy($this->bucket . '/' . $path2);
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// invalidate target object to force repopulation on fetch
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$this->objectCache->remove($path2);
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$this->objectCache->remove($path2 . '/');
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} catch (ClientErrorResponseException $e) {
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\OCP\Util::writeLog('files_external', $e->getMessage(), \OCP\Util::ERROR);
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return false;
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}
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} else if ($fileType === 'dir') {
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// make way
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$this->unlink($path2);
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try {
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$source = $this->fetchObject($path1 . '/');
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$source->copy($this->bucket . '/' . $path2 . '/');
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// invalidate target object to force repopulation on fetch
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$this->objectCache->remove($path2);
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$this->objectCache->remove($path2 . '/');
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} catch (ClientErrorResponseException $e) {
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\OCP\Util::writeLog('files_external', $e->getMessage(), \OCP\Util::ERROR);
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return false;
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}
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$dh = $this->opendir($path1);
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while ($file = readdir($dh)) {
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if (\OC\Files\Filesystem::isIgnoredDir($file)) {
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continue;
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}
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$source = $path1 . '/' . $file;
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$target = $path2 . '/' . $file;
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$this->copy($source, $target);
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}
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} else {
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//file does not exist
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return false;
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}
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return true;
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}
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public function rename($path1, $path2) {
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$path1 = $this->normalizePath($path1);
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$path2 = $this->normalizePath($path2);
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$fileType = $this->filetype($path1);
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if ($fileType === 'dir' || $fileType === 'file') {
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// copy
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if ($this->copy($path1, $path2) === false) {
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return false;
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}
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// cleanup
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if ($this->unlink($path1) === false) {
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$this->unlink($path2);
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return false;
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}
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return true;
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}
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return false;
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}
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public function getId() {
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return $this->id;
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}
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/**
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* Returns the connection
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*
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* @return OpenCloud\ObjectStore\Service connected client
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* @throws \Exception if connection could not be made
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*/
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public function getConnection() {
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if (!is_null($this->connection)) {
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return $this->connection;
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}
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$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) {
|
|
if (!isset(self::$tmpFiles[$tmpFile])) {
|
|
return false;
|
|
}
|
|
$fileData = fopen($tmpFile, 'r');
|
|
$this->getContainer()->uploadObject(self::$tmpFiles[$tmpFile], $fileData);
|
|
// invalidate target object to force repopulation on fetch
|
|
$this->objectCache->remove(self::$tmpFiles[$tmpFile]);
|
|
unlink($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;
|
|
}
|
|
|
|
}
|