nextcloud/apps/files_external/lib/swift.php

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<?php
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/**
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* ownCloud
*
* @author Christian Berendt
* @copyright 2013 Christian Berendt berendt@b1-systems.de
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
* License as published by the Free Software Foundation; either
* version 3 of the License, or any later version.
*
* This library 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 along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
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namespace OC\Files\Storage;
use Guzzle\Http\Exception\ClientErrorResponseException;
use OpenCloud;
use OpenCloud\Common\Exceptions;
use OpenCloud\OpenStack;
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use OpenCloud\Rackspace;
use OpenCloud\ObjectStore\Resource\DataObject;
use OpenCloud\ObjectStore\Exception;
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class Swift extends \OC\Files\Storage\Common {
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/**
* @var \OpenCloud\ObjectStore\Service
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*/
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private $connection;
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/**
* @var \OpenCloud\ObjectStore\Resource\Container
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*/
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private $container;
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/**
* @var \OpenCloud\OpenStack
*/
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private $anchor;
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/**
* @var string
*/
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private $bucket;
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/**
* @var array
*/
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private static $tmpFiles = array();
/**
* @param string $path
*/
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private function normalizePath($path) {
$path = trim($path, '/');
if (!$path) {
$path = '.';
}
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$path = str_replace('#', '%23', $path);
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return $path;
}
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const SUBCONTAINER_FILE = '.subcontainers';
/**
* translate directory path to container name
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*
* @param string $path
* @return string
*/
private function getContainerName($path) {
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$path = trim(trim($this->root, '/') . "/" . $path, '/.');
return str_replace('/', '\\', $path);
}
/**
* @param string $path
*/
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private function doesObjectExist($path) {
try {
$this->container->getPartialObject($path);
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return true;
} catch (ClientErrorResponseException $e) {
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\OCP\Util::writeLog('files_external', $e->getMessage(), \OCP\Util::ERROR);
return false;
}
}
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public function __construct($params) {
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if ((empty($params['key']) and empty($params['password']))
or empty($params['user']) or empty($params['bucket'])
or empty($params['region'])
) {
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throw new \Exception("API Key or password, Username, Bucket and Region have to be configured.");
}
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$this->id = 'swift::' . $params['user'] . md5($params['bucket']);
$this->bucket = $params['bucket'];
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if (empty($params['url'])) {
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$params['url'] = 'https://identity.api.rackspacecloud.com/v2.0/';
}
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if (empty($params['service_name'])) {
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$params['service_name'] = 'cloudFiles';
}
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$settings = array(
'username' => $params['user'],
);
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if (!empty($params['password'])) {
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$settings['password'] = $params['password'];
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} else if (!empty($params['key'])) {
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$settings['apiKey'] = $params['key'];
}
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if (!empty($params['tenant'])) {
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$settings['tenantName'] = $params['tenant'];
}
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if (!empty($params['timeout'])) {
$settings['timeout'] = $params['timeout'];
}
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if (isset($settings['apiKey'])) {
$this->anchor = new Rackspace($params['url'], $settings);
} else {
$this->anchor = new OpenStack($params['url'], $settings);
}
$this->connection = $this->anchor->objectStoreService($params['service_name'], $params['region']);
try {
$this->container = $this->connection->getContainer($this->bucket);
} catch (ClientErrorResponseException $e) {
$this->container = $this->connection->createContainer($this->bucket);
}
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if (!$this->file_exists('.')) {
$this->mkdir('.');
}
}
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public function mkdir($path) {
$path = $this->normalizePath($path);
if ($this->is_dir($path)) {
return false;
}
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if ($path !== '.') {
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$path .= '/';
}
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try {
$customHeaders = array('content-type' => 'httpd/unix-directory');
$metadataHeaders = DataObject::stockHeaders(array());
$allHeaders = $customHeaders + $metadataHeaders;
$this->container->uploadObject($path, '', $allHeaders);
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} catch (Exceptions\CreateUpdateError $e) {
\OCP\Util::writeLog('files_external', $e->getMessage(), \OCP\Util::ERROR);
return false;
}
return true;
}
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public function file_exists($path) {
$path = $this->normalizePath($path);
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if ($path !== '.' && $this->is_dir($path)) {
$path .= '/';
}
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return $this->doesObjectExist($path);
}
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public function rmdir($path) {
$path = $this->normalizePath($path);
if (!$this->is_dir($path) or !$this->isDeletable($path)) {
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return false;
}
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$dh = $this->opendir($path);
while ($file = readdir($dh)) {
if ($file === '.' || $file === '..') {
continue;
}
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if ($this->is_dir($path . '/' . $file)) {
$this->rmdir($path . '/' . $file);
} else {
$this->unlink($path . '/' . $file);
}
}
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try {
$this->container->dataObject()->setName($path . '/')->delete();
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} catch (Exceptions\DeleteError $e) {
\OCP\Util::writeLog('files_external', $e->getMessage(), \OCP\Util::ERROR);
return false;
}
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return true;
}
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public function opendir($path) {
$path = $this->normalizePath($path);
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if ($path === '.') {
$path = '';
} else {
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$path .= '/';
}
$path = str_replace('%23', '#', $path); // the prefix is sent as a query param, so revert the encoding of #
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try {
$files = array();
/** @var OpenCloud\Common\Collection $objects */
$objects = $this->container->objectList(array(
'prefix' => $path,
'delimiter' => '/'
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));
/** @var OpenCloud\ObjectStore\Resource\DataObject $object */
foreach ($objects as $object) {
$file = basename($object->getName());
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if ($file !== basename($path)) {
$files[] = $file;
}
}
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\OC\Files\Stream\Dir::register('swift' . $path, $files);
return opendir('fakedir://swift' . $path);
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} catch (\Exception $e) {
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\OCP\Util::writeLog('files_external', $e->getMessage(), \OCP\Util::ERROR);
return false;
}
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}
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public function stat($path) {
$path = $this->normalizePath($path);
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if ($path === '.') {
$path = '';
} else if ($this->is_dir($path)) {
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$path .= '/';
}
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try {
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/** @var DataObject $object */
$object = $this->container->getPartialObject($path);
} catch (ClientErrorResponseException $e) {
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\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 = $metaTimestamp;
}
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if (!empty($mtime)) {
$mtime = floor($mtime);
}
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$stat = array();
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$stat['size'] = (int)$object->getContentLength();
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$stat['mtime'] = $mtime;
$stat['atime'] = time();
return $stat;
}
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public function filetype($path) {
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$path = $this->normalizePath($path);
if ($path !== '.' && $this->doesObjectExist($path)) {
return 'file';
}
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if ($path !== '.') {
$path .= '/';
}
if ($this->doesObjectExist($path)) {
return 'dir';
}
}
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public function unlink($path) {
$path = $this->normalizePath($path);
if ($this->is_dir($path)) {
return $this->rmdir($path);
}
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try {
$this->container->dataObject()->setName($path)->delete();
} catch (ClientErrorResponseException $e) {
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\OCP\Util::writeLog('files_external', $e->getMessage(), \OCP\Util::ERROR);
return false;
}
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return true;
}
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public function fopen($path, $mode) {
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$path = $this->normalizePath($path);
switch ($mode) {
case 'r':
case 'rb':
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$tmpFile = \OC_Helper::tmpFile();
self::$tmpFiles[$tmpFile] = $path;
try {
$object = $this->container->getObject($path);
} catch (ClientErrorResponseException $e) {
\OCP\Util::writeLog('files_external', $e->getMessage(), \OCP\Util::ERROR);
return false;
} catch (Exception\ObjectNotFoundException $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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try {
$objectContent = $object->getContent();
$objectContent->rewind();
$stream = $objectContent->getStream();
file_put_contents($tmpFile, $stream);
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} catch (Exceptions\IOError $e) {
\OCP\Util::writeLog('files_external', $e->getMessage(), \OCP\Util::ERROR);
return false;
}
return fopen($tmpFile, 'r');
case 'w':
case 'wb':
case 'a':
case 'ab':
case 'r+':
case 'w+':
case 'wb+':
case 'a+':
case 'x':
case 'x+':
case 'c':
case 'c+':
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if (strrpos($path, '.') !== false) {
$ext = substr($path, strrpos($path, '.'));
} else {
$ext = '';
}
$tmpFile = \OC_Helper::tmpFile($ext);
\OC\Files\Stream\Close::registerCallback($tmpFile, array($this, 'writeBack'));
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if ($this->file_exists($path)) {
$source = $this->fopen($path, 'r');
file_put_contents($tmpFile, $source);
}
self::$tmpFiles[$tmpFile] = $path;
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return fopen('close://' . $tmpFile, $mode);
}
}
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public function getMimeType($path) {
$path = $this->normalizePath($path);
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if ($this->is_dir($path)) {
return 'httpd/unix-directory';
} else if ($this->file_exists($path)) {
$object = $this->container->getPartialObject($path);
return $object->getContentType();
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}
return false;
}
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public function touch($path, $mtime = null) {
$path = $this->normalizePath($path);
if (is_null($mtime)) {
$mtime = time();
}
$metadata = array('timestamp' => $mtime);
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if ($this->file_exists($path)) {
if ($this->is_dir($path) && $path != '.') {
$path .= '/';
}
$object = $this->container->getPartialObject($path);
$object->saveMetadata($metadata);
return true;
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} else {
$customHeaders = array('content-type' => 'text/plain');
$metadataHeaders = DataObject::stockHeaders($metadata);
$allHeaders = $customHeaders + $metadataHeaders;
$this->container->uploadObject($path, '', $allHeaders);
return true;
}
}
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public function copy($path1, $path2) {
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$path1 = $this->normalizePath($path1);
$path2 = $this->normalizePath($path2);
$fileType = $this->filetype($path1);
if ($fileType === 'file') {
// make way
$this->unlink($path2);
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try {
$source = $this->container->getPartialObject($path1);
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$source->copy($this->bucket . '/' . $path2);
} catch (ClientErrorResponseException $e) {
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\OCP\Util::writeLog('files_external', $e->getMessage(), \OCP\Util::ERROR);
return false;
}
} else if ($fileType === 'dir') {
// make way
$this->unlink($path2);
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try {
$source = $this->container->getPartialObject($path1 . '/');
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$source->copy($this->bucket . '/' . $path2 . '/');
} catch (ClientErrorResponseException $e) {
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\OCP\Util::writeLog('files_external', $e->getMessage(), \OCP\Util::ERROR);
return false;
}
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$dh = $this->opendir($path1);
while ($file = readdir($dh)) {
if ($file === '.' || $file === '..') {
continue;
}
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$source = $path1 . '/' . $file;
$target = $path2 . '/' . $file;
$this->copy($source, $target);
}
} else {
//file does not exist
return false;
}
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return true;
}
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public function rename($path1, $path2) {
$path1 = $this->normalizePath($path1);
$path2 = $this->normalizePath($path2);
$fileType = $this->filetype($path1);
if ($fileType === 'dir' || $fileType === 'file') {
// make way
$this->unlink($path2);
// copy
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if ($this->copy($path1, $path2) === false) {
return false;
}
// cleanup
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if ($this->unlink($path1) === false) {
$this->unlink($path2);
return false;
}
return true;
}
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return false;
}
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public function getId() {
return $this->id;
}
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public function getConnection() {
return $this->connection;
}
public function writeBack($tmpFile) {
if (!isset(self::$tmpFiles[$tmpFile])) {
return false;
}
$fileData = fopen($tmpFile, 'r');
$this->container->uploadObject(self::$tmpFiles[$tmpFile], $fileData);
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unlink($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() {
if (function_exists('curl_init')) {
return true;
} else {
return array('curl');
}
}
}