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;
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set_include_path(get_include_path() . PATH_SEPARATOR .
\OC_App::getAppPath('files_external') . '/3rdparty/php-opencloud/lib');
require_once 'openstack.php';
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use \OpenCloud;
use \OpenCloud\Common\Exceptions;
class Swift extends \OC\Files\Storage\Common {
/**
* @var \OpenCloud\ObjectStore
*/
private $connection;
/**
* @var \OpenCloud\ObjectStore\Container
*/
private $container;
/**
* @var \OpenCloud\OpenStack
*/
private $anchor;
/**
* @var string
*/
private $bucket;
/**
* @var array
*/
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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return $path;
}
/**
* check if curl is installed
*/
public static function checkDependencies() {
if (function_exists('curl_init')) {
return true;
} else {
$l = new \OC_L10N('files_external');
return $l->t('<b>Note:</b> The cURL support in PHP is not enabled or installed. Mounting of OpenStack Swift is not possible. Please ask your system administrator to install it.');
}
}
/**
* @param string $path
*/
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private function doesObjectExist($path) {
try {
$object = $this->container->DataObject($path);
return true;
} catch (Exceptions\ObjFetchError $e) {
\OCP\Util::writeLog('files_external', $e->getMessage(), \OCP\Util::ERROR);
return false;
} catch (Exceptions\HttpError $e) {
\OCP\Util::writeLog('files_external', $e->getMessage(), \OCP\Util::ERROR);
return false;
}
}
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public function __construct($params) {
if ((!isset($params['key']) and !isset($params['password']))
or !isset($params['user']) or !isset($params['bucket'])
or !isset($params['region'])) {
throw new \Exception("API Key or password, Username, Bucket and Region have to be configured.");
}
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$this->id = 'swift::' . $params['user'] . md5($params['bucket']);
$this->bucket = $params['bucket'];
if (!isset($params['url'])) {
$params['url'] = 'https://identity.api.rackspacecloud.com/v2.0/';
}
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if (!isset($params['service_name'])) {
$params['service_name'] = 'cloudFiles';
}
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$settings = array(
'username' => $params['user'],
);
if (isset($params['password'])) {
$settings['password'] = $params['password'];
} else if (isset($params['key'])) {
$settings['apiKey'] = $params['key'];
}
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if (isset($params['tenant'])) {
$settings['tenantName'] = $params['tenant'];
}
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$this->anchor = new \OpenCloud\OpenStack($params['url'], $settings);
if (isset($params['timeout'])) {
$this->anchor->setHttpTimeout($params['timeout']);
}
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$this->connection = $this->anchor->ObjectStore($params['service_name'], $params['region'], 'publicURL');
try {
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$this->container = $this->connection->Container($this->bucket);
} catch (Exceptions\ContainerNotFoundError $e) {
$this->container = $this->connection->Container();
$this->container->Create(array('name' => $this->bucket));
}
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if (!$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 !== '.') {
$path .= '/';
}
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try {
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$object = $this->container->DataObject();
$object->Create(array(
'name' => $path,
'content_type' => 'httpd/unix-directory'
));
} 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)) {
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 {
$object = $this->container->DataObject($path . '/');
$object->Delete();
} 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 .= '/';
}
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try {
$files = array();
$objects = $this->container->ObjectList(array(
'prefix' => $path,
'delimiter' => '/'
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));
while ($object = $objects->Next()) {
$file = basename($object->Name());
if ($file !== basename($path)) {
$files[] = $file;
}
}
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\OC\Files\Stream\Dir::register('swift' . $path, $files);
return opendir('fakedir://swift' . $path);
} catch (Exception $e) {
\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);
if ($this->is_dir($path) && $path != '.') {
$path .= '/';
}
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try {
$object = $this->container->DataObject($path);
} catch (Exceptions\ObjFetchError $e) {
\OCP\Util::writeLog('files_external', $e->getMessage(), \OCP\Util::ERROR);
return false;
}
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$mtime = $object->extra_headers['X-Timestamp'];
if (isset($object->extra_headers['X-Object-Meta-Timestamp'])) {
$mtime = $object->extra_headers['X-Object-Meta-Timestamp'];
}
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if (!empty($mtime)) {
$mtime = floor($mtime);
}
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$stat = array();
$stat['size'] = $object->content_length;
$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);
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try {
$object = $this->container->DataObject($path);
$object->Delete();
} catch (Exceptions\DeleteError $e) {
\OCP\Util::writeLog('files_external', $e->getMessage(), \OCP\Util::ERROR);
return false;
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} catch (Exceptions\ObjFetchError $e) {
\OCP\Util::writeLog('files_external', $e->getMessage(), \OCP\Util::ERROR);
return false;
}
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return true;
}
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public function fopen($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 = $this->container->DataObject($path);
} catch (Exceptions\ObjFetchError $e) {
\OCP\Util::writeLog('files_external', $e->getMessage(), \OCP\Util::ERROR);
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return false;
}
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try {
$object->SaveToFilename($tmpFile);
} 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 = $this->container->DataObject($path);
return $object->extra_headers["Content-Type"];
}
return false;
}
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public function touch($path, $mtime = null) {
$path = $this->normalizePath($path);
if ($this->file_exists($path)) {
if ($this->is_dir($path) && $path != '.') {
$path .= '/';
}
$object = $this->container->DataObject($path);
if( is_null($mtime)) {
$mtime = time();
}
$settings = array(
'name' => $path,
'extra_headers' => array(
'X-Object-Meta-Timestamp' => $mtime
)
);
return $object->UpdateMetadata($settings);
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} else {
$object = $this->container->DataObject();
if (is_null($mtime)) {
$mtime = time();
}
$settings = array(
'name' => $path,
'content_type' => 'text/plain',
'extra_headers' => array(
'X-Object-Meta-Timestamp' => $mtime
)
);
return $object->Create($settings);
}
}
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public function copy($path1, $path2) {
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$path1 = $this->normalizePath($path1);
$path2 = $this->normalizePath($path2);
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if ($this->is_file($path1)) {
try {
$source = $this->container->DataObject($path1);
$target = $this->container->DataObject();
$target->Create(array(
'name' => $path2,
));
$source->Copy($target);
} catch (Exceptions\ObjectCopyError $e) {
\OCP\Util::writeLog('files_external', $e->getMessage(), \OCP\Util::ERROR);
return false;
}
} else {
if ($this->file_exists($path2)) {
return false;
}
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try {
$source = $this->container->DataObject($path1 . '/');
$target = $this->container->DataObject();
$target->Create(array(
'name' => $path2 . '/',
));
$source->Copy($target);
} catch (Exceptions\ObjectCopyError $e) {
\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, $target);
}
}
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return true;
}
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public function rename($path1, $path2) {
$path1 = $this->normalizePath($path1);
$path2 = $this->normalizePath($path2);
if ($this->is_file($path1)) {
if ($this->copy($path1, $path2) === false) {
return false;
}
if ($this->unlink($path1) === false) {
$this->unlink($path2);
return false;
}
} else {
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if ($this->file_exists($path2)) {
return false;
}
if ($this->copy($path1, $path2) === false) {
return false;
}
if ($this->rmdir($path1) === false) {
$this->rmdir($path2);
return false;
}
}
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return true;
}
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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;
}
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$object = $this->container->DataObject();
$object->Create(array(
'name' => self::$tmpFiles[$tmpFile],
'content_type' => \OC_Helper::getMimeType($tmpFile)
), $tmpFile);
unlink($tmpFile);
}
}