420 lines
10 KiB
PHP
420 lines
10 KiB
PHP
<?php
|
|
/**
|
|
* @author Jörn Friedrich Dreyer
|
|
* @copyright (c) 2014 Jörn Friedrich Dreyer <jfd@owncloud.com>
|
|
*
|
|
* 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/>.
|
|
*
|
|
*/
|
|
|
|
namespace OC\Files\ObjectStore;
|
|
|
|
use OC\Files\Filesystem;
|
|
use OCP\Files\ObjectStore\IObjectStore;
|
|
|
|
class ObjectStoreStorage extends \OC\Files\Storage\Common {
|
|
|
|
/**
|
|
* @var array
|
|
*/
|
|
private static $tmpFiles = array();
|
|
/**
|
|
* @var \OCP\Files\ObjectStore\IObjectStore $objectStore
|
|
*/
|
|
protected $objectStore;
|
|
/**
|
|
* @var \OC\User\User $user
|
|
*/
|
|
protected $user;
|
|
|
|
public function __construct($params) {
|
|
if (isset($params['objectstore']) && $params['objectstore'] instanceof IObjectStore) {
|
|
$this->objectStore = $params['objectstore'];
|
|
} else {
|
|
throw new \Exception('missing IObjectStore instance');
|
|
}
|
|
if (isset($params['storageid'])) {
|
|
$this->id = 'object::store:' . $params['storageid'];
|
|
} else {
|
|
$this->id = 'object::store:' . $this->objectStore->getStorageId();
|
|
}
|
|
//initialize cache with root directory in cache
|
|
if (!$this->is_dir('/')) {
|
|
$this->mkdir('/');
|
|
}
|
|
}
|
|
|
|
public function mkdir($path) {
|
|
$path = $this->normalizePath($path);
|
|
|
|
if ($this->is_dir($path)) {
|
|
return false;
|
|
}
|
|
|
|
$dirName = dirname($path);
|
|
$parentExists = $this->is_dir($dirName);
|
|
|
|
$mTime = time();
|
|
|
|
$data = array(
|
|
'mimetype' => 'httpd/unix-directory',
|
|
'size' => 0,
|
|
'mtime' => $mTime,
|
|
'storage_mtime' => $mTime,
|
|
'permissions' => \OCP\PERMISSION_ALL,
|
|
);
|
|
|
|
if ($dirName === '.' && !$parentExists) {
|
|
//create root on the fly
|
|
$data['etag'] = $this->getETag($dirName);
|
|
$this->getCache()->put('', $data);
|
|
$parentExists = true;
|
|
}
|
|
|
|
if ($parentExists) {
|
|
$data['etag'] = $this->getETag($path);
|
|
$this->getCache()->put($path, $data);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* @param string $path
|
|
* @return string
|
|
*/
|
|
private function normalizePath($path) {
|
|
$path = trim($path, '/');
|
|
//FIXME why do we sometimes get a path like 'files//username'?
|
|
$path = str_replace('//', '/', $path);
|
|
|
|
if (!$path) {
|
|
$path = '.';
|
|
}
|
|
|
|
return $path;
|
|
}
|
|
|
|
/**
|
|
* Object Stores use a NoopScanner because metadata is directly stored in
|
|
* the file cache and cannot really scan the filesystem. The storage passed in is not used anywhere.
|
|
*
|
|
* @param string $path
|
|
* @param \OC\Files\Storage\Storage (optional) the storage to pass to the scanner
|
|
* @return \OC\Files\ObjectStore\NoopScanner
|
|
*/
|
|
public function getScanner($path = '', $storage = null) {
|
|
if (!$storage) {
|
|
$storage = $this;
|
|
}
|
|
if (!isset($this->scanner)) {
|
|
$this->scanner = new NoopScanner($storage);
|
|
}
|
|
return $this->scanner;
|
|
}
|
|
|
|
public function getId() {
|
|
return $this->id;
|
|
}
|
|
|
|
public function rmdir($path) {
|
|
$path = $this->normalizePath($path);
|
|
|
|
if (!$this->is_dir($path)) {
|
|
return false;
|
|
}
|
|
|
|
$this->rmObjects($path);
|
|
|
|
$this->getCache()->remove($path);
|
|
|
|
return true;
|
|
}
|
|
|
|
private function rmObjects($path) {
|
|
$children = $this->getCache()->getFolderContents($path);
|
|
foreach ($children as $child) {
|
|
if ($child['mimetype'] === 'httpd/unix-directory') {
|
|
$this->rmObjects($child['path']);
|
|
} else {
|
|
$this->unlink($child['path']);
|
|
}
|
|
}
|
|
}
|
|
|
|
public function unlink($path) {
|
|
$path = $this->normalizePath($path);
|
|
$stat = $this->stat($path);
|
|
|
|
if ($stat && isset($stat['fileid'])) {
|
|
if ($stat['mimetype'] === 'httpd/unix-directory') {
|
|
return $this->rmdir($path);
|
|
}
|
|
try {
|
|
$this->objectStore->deleteObject($this->getURN($stat['fileid']));
|
|
} catch (\Exception $ex) {
|
|
if ($ex->getCode() !== 404) {
|
|
\OCP\Util::writeLog('objectstore', 'Could not delete object: ' . $ex->getMessage(), \OCP\Util::ERROR);
|
|
return false;
|
|
} else {
|
|
//removing from cache is ok as it does not exist in the objectstore anyway
|
|
}
|
|
}
|
|
$this->getCache()->remove($path);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
public function stat($path) {
|
|
$path = $this->normalizePath($path);
|
|
return $this->getCache()->get($path);
|
|
}
|
|
|
|
/**
|
|
* Override this method if you need a different unique resource identifier for your object storage implementation.
|
|
* The default implementations just appends the fileId to 'urn:oid:'. Make sure the URN is unique over all users.
|
|
* You may need a mapping table to store your URN if it cannot be generated from the fileid.
|
|
*
|
|
* @param int $fileId the fileid
|
|
* @return null|string the unified resource name used to identify the object
|
|
*/
|
|
protected function getURN($fileId) {
|
|
if (is_numeric($fileId)) {
|
|
return 'urn:oid:' . $fileId;
|
|
}
|
|
return null;
|
|
}
|
|
|
|
public function opendir($path) {
|
|
$path = $this->normalizePath($path);
|
|
|
|
if ($path === '.') {
|
|
$path = '';
|
|
}
|
|
|
|
try {
|
|
$files = array();
|
|
$folderContents = $this->getCache()->getFolderContents($path);
|
|
foreach ($folderContents as $file) {
|
|
$files[] = $file['name'];
|
|
}
|
|
|
|
\OC\Files\Stream\Dir::register('objectstore' . $path . '/', $files);
|
|
|
|
return opendir('fakedir://objectstore' . $path . '/');
|
|
} catch (Exception $e) {
|
|
\OCP\Util::writeLog('objectstore', $e->getMessage(), \OCP\Util::ERROR);
|
|
return false;
|
|
}
|
|
}
|
|
|
|
public function filetype($path) {
|
|
$path = $this->normalizePath($path);
|
|
$stat = $this->stat($path);
|
|
if ($stat) {
|
|
if ($stat['mimetype'] === 'httpd/unix-directory') {
|
|
return 'dir';
|
|
}
|
|
return 'file';
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
public function fopen($path, $mode) {
|
|
$path = $this->normalizePath($path);
|
|
|
|
switch ($mode) {
|
|
case 'r':
|
|
case 'rb':
|
|
$stat = $this->stat($path);
|
|
if (is_array($stat)) {
|
|
try {
|
|
return $this->objectStore->readObject($this->getURN($stat['fileid']));
|
|
} catch (\Exception $ex) {
|
|
\OCP\Util::writeLog('objectstore', 'Could not get object: ' . $ex->getMessage(), \OCP\Util::ERROR);
|
|
return false;
|
|
}
|
|
} else {
|
|
return false;
|
|
}
|
|
case 'w':
|
|
case 'wb':
|
|
case 'a':
|
|
case 'ab':
|
|
case 'r+':
|
|
case 'w+':
|
|
case 'wb+':
|
|
case 'a+':
|
|
case 'x':
|
|
case 'x+':
|
|
case 'c':
|
|
case 'c+':
|
|
if (strrpos($path, '.') !== false) {
|
|
$ext = substr($path, strrpos($path, '.'));
|
|
} else {
|
|
$ext = '';
|
|
}
|
|
$tmpFile = \OC_Helper::tmpFile($ext);
|
|
\OC\Files\Stream\Close::registerCallback($tmpFile, array($this, 'writeBack'));
|
|
if ($this->file_exists($path)) {
|
|
$source = $this->fopen($path, 'r');
|
|
file_put_contents($tmpFile, $source);
|
|
}
|
|
self::$tmpFiles[$tmpFile] = $path;
|
|
|
|
return fopen('close://' . $tmpFile, $mode);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
public function file_exists($path) {
|
|
$path = $this->normalizePath($path);
|
|
return (bool)$this->stat($path);
|
|
}
|
|
|
|
public function rename($source, $target) {
|
|
$source = $this->normalizePath($source);
|
|
$target = $this->normalizePath($target);
|
|
$stat1 = $this->stat($source);
|
|
if (isset($stat1['mimetype']) && $stat1['mimetype'] === 'httpd/unix-directory') {
|
|
$this->remove($target);
|
|
$dir = $this->opendir($source);
|
|
$this->mkdir($target);
|
|
while ($file = readdir($dir)) {
|
|
if (!Filesystem::isIgnoredDir($file)) {
|
|
if (!$this->rename($source . '/' . $file, $target . '/' . $file)) {
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
closedir($dir);
|
|
$this->remove($source);
|
|
return true;
|
|
} else {
|
|
if (is_array($stat1)) {
|
|
$parent = $this->stat(dirname($target));
|
|
if (is_array($parent)) {
|
|
$this->remove($target);
|
|
$stat1['parent'] = $parent['fileid'];
|
|
$stat1['path'] = $target;
|
|
$stat1['path_hash'] = md5($target);
|
|
$stat1['name'] = \OC_Util::basename($target);
|
|
$stat1['mtime'] = time();
|
|
$stat1['etag'] = $this->getETag($target);
|
|
$this->getCache()->update($stat1['fileid'], $stat1);
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
public function getMimeType($path) {
|
|
$path = $this->normalizePath($path);
|
|
$stat = $this->stat($path);
|
|
if (is_array($stat)) {
|
|
return $stat['mimetype'];
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
public function touch($path, $mtime = null) {
|
|
if (is_null($mtime)) {
|
|
$mtime = time();
|
|
}
|
|
|
|
$path = $this->normalizePath($path);
|
|
$dirName = dirname($path);
|
|
$parentExists = $this->is_dir($dirName);
|
|
if (!$parentExists) {
|
|
return false;
|
|
}
|
|
|
|
$stat = $this->stat($path);
|
|
if (is_array($stat)) {
|
|
// update existing mtime in db
|
|
$stat['mtime'] = $mtime;
|
|
$this->getCache()->update($stat['fileid'], $stat);
|
|
} else {
|
|
$mimeType = \OC_Helper::getFileNameMimeType($path);
|
|
// create new file
|
|
$stat = array(
|
|
'etag' => $this->getETag($path),
|
|
'mimetype' => $mimeType,
|
|
'size' => 0,
|
|
'mtime' => $mtime,
|
|
'storage_mtime' => $mtime,
|
|
'permissions' => \OCP\PERMISSION_ALL,
|
|
);
|
|
$fileId = $this->getCache()->put($path, $stat);
|
|
try {
|
|
//read an empty file from memory
|
|
$this->objectStore->writeObject($this->getURN($fileId), fopen('php://memory', 'r'));
|
|
} catch (\Exception $ex) {
|
|
$this->getCache()->remove($path);
|
|
\OCP\Util::writeLog('objectstore', 'Could not create object: ' . $ex->getMessage(), \OCP\Util::ERROR);
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
public function writeBack($tmpFile) {
|
|
if (!isset(self::$tmpFiles[$tmpFile])) {
|
|
return false;
|
|
}
|
|
|
|
$path = self::$tmpFiles[$tmpFile];
|
|
$stat = $this->stat($path);
|
|
if (empty($stat)) {
|
|
// create new file
|
|
$stat = array(
|
|
'etag' => $this->getETag($path),
|
|
'permissions' => \OCP\PERMISSION_ALL,
|
|
);
|
|
}
|
|
// update stat with new data
|
|
$mTime = time();
|
|
$stat['size'] = filesize($tmpFile);
|
|
$stat['mtime'] = $mTime;
|
|
$stat['storage_mtime'] = $mTime;
|
|
$stat['mimetype'] = \OC_Helper::getMimeType($tmpFile);
|
|
|
|
$fileId = $this->getCache()->put($path, $stat);
|
|
try {
|
|
//upload to object storage
|
|
$this->objectStore->writeObject($this->getURN($fileId), fopen($tmpFile, 'r'));
|
|
} catch (\Exception $ex) {
|
|
$this->getCache()->remove($path);
|
|
\OCP\Util::writeLog('objectstore', 'Could not create object: ' . $ex->getMessage(), \OCP\Util::ERROR);
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* external changes are not supported, exclusive access to the object storage is assumed
|
|
*
|
|
* @param string $path
|
|
* @param int $time
|
|
* @return false
|
|
*/
|
|
public function hasUpdated($path, $time) {
|
|
return false;
|
|
}
|
|
}
|