Merge branch 'master' of https://github.com/owncloud/core

Conflicts:
	apps/files_external/appinfo/app.php

6 files changed, 1086 insertions, 0 deletions

diff --git a/lib/files/storage/common.php b/lib/files/storage/common.php
new file mode 100644
index 00000000000..668cb08d7b1
--- /dev/null
+++ b/lib/files/storage/common.php
@@ -0,0 +1,304 @@
+<?php
+/**
+ * Copyright (c) 2012 Robin Appelman <icewind@owncloud.com>
+ * This file is licensed under the Affero General Public License version 3 or
+ * later.
+ * See the COPYING-README file.
+ */
+
+namespace OC\Files\Storage;
+
+/**
+ * Storage backend class for providing common filesystem operation methods
+ * which are not storage-backend specific.
+ *
+ * \OC\Files\Storage\Common is never used directly; it is extended by all other
+ * storage backends, where its methods may be overridden, and additional
+ * (backend-specific) methods are defined.
+ *
+ * Some \OC\Files\Storage\Common methods call functions which are first defined
+ * in classes which extend it, e.g. $this->stat() .
+ */
+
+abstract class Common implements \OC\Files\Storage\Storage {
+
+	public function __construct($parameters) {}
+	public function is_dir($path) {
+		return $this->filetype($path)=='dir';
+	}
+	public function is_file($path) {
+		return $this->filetype($path)=='file';
+	}
+	public function filesize($path) {
+		if($this->is_dir($path)) {
+			return 0;//by definition
+		}else{
+			$stat = $this->stat($path);
+			return $stat['size'];
+		}
+	}
+	public function isCreatable($path) {
+		if ($this->is_dir($path) && $this->isUpdatable($path)) {
+			return true;
+		}
+		return false;
+	}
+	public function isDeletable($path) {
+		return $this->isUpdatable($path);
+	}
+	public function isSharable($path) {
+		return $this->isReadable($path);
+	}
+	public function getPermissions($path){
+		$permissions = 0;
+		if($this->isCreatable($path)){
+			$permissions |= \OCP\PERMISSION_CREATE;
+		}
+		if($this->isReadable($path)){
+			$permissions |= \OCP\PERMISSION_READ;
+		}
+		if($this->isUpdatable($path)){
+			$permissions |= \OCP\PERMISSION_UPDATE;
+		}
+		if($this->isDeletable($path)){
+			$permissions |= \OCP\PERMISSION_DELETE;
+		}
+		if($this->isSharable($path)){
+			$permissions |= \OCP\PERMISSION_SHARE;
+		}
+		return $permissions;
+	}
+	public function filemtime($path) {
+		$stat = $this->stat($path);
+		return $stat['mtime'];
+	}
+	public function file_get_contents($path) {
+		$handle = $this->fopen($path, "r");
+		if(!$handle) {
+			return false;
+		}
+		$size=$this->filesize($path);
+		if($size==0) {
+			return '';
+		}
+		return fread($handle, $size);
+	}
+	public function file_put_contents($path,$data) {
+		$handle = $this->fopen($path, "w");
+		return fwrite($handle, $data);
+	}
+	public function rename($path1,$path2) {
+		if($this->copy($path1,$path2)) {
+			return $this->unlink($path1);
+		}else{
+			return false;
+		}
+	}
+	public function copy($path1,$path2) {
+		$source=$this->fopen($path1,'r');
+		$target=$this->fopen($path2,'w');
+		$count=\OC_Helper::streamCopy($source,$target);
+		return $count>0;
+	}
+
+	/**
+	 * @brief Deletes all files and folders recursively within a directory
+	 * @param string $directory The directory whose contents will be deleted
+	 * @param bool $empty Flag indicating whether directory will be emptied
+	 * @returns bool
+	 *
+	 * @note By default the directory specified by $directory will be
+	 * deleted together with its contents. To avoid this set $empty to true
+	 */
+	public function deleteAll( $directory, $empty = false ) {
+		$directory = trim($directory,'/');
+
+		if ( !$this->file_exists( \OCP\USER::getUser() . '/' . $directory ) || !$this->is_dir( \OCP\USER::getUser() . '/' . $directory ) ) {
+			return false;
+		} elseif( !$this->isReadable( \OCP\USER::getUser() . '/' . $directory ) ) {
+			return false;
+		} else {
+			$directoryHandle = $this->opendir( \OCP\USER::getUser() . '/' . $directory );
+			while ( $contents = readdir( $directoryHandle ) ) {
+				if ( $contents != '.' && $contents != '..') {
+					$path = $directory . "/" . $contents;
+					if ( $this->is_dir( $path ) ) {
+						$this->deleteAll( $path );
+					} else {
+						$this->unlink( \OCP\USER::getUser() .'/' . $path ); // TODO: make unlink use same system path as is_dir
+					}
+				}
+			}
+			//$this->closedir( $directoryHandle ); // TODO: implement closedir in OC_FSV
+			if ( $empty == false ) {
+				if ( !$this->rmdir( $directory ) ) {
+				return false;
+				}
+			}
+			return true;
+		}
+
+	}
+	public function getMimeType($path) {
+		if(!$this->file_exists($path)) {
+			return false;
+		}
+		if($this->is_dir($path)) {
+			return 'httpd/unix-directory';
+		}
+		$source=$this->fopen($path,'r');
+		if(!$source) {
+			return false;
+		}
+		$head=fread($source,8192);//8kb should suffice to determine a mimetype
+		if($pos=strrpos($path,'.')) {
+			$extension=substr($path,$pos);
+		}else{
+			$extension='';
+		}
+		$tmpFile=\OC_Helper::tmpFile($extension);
+		file_put_contents($tmpFile,$head);
+		$mime=\OC_Helper::getMimeType($tmpFile);
+		unlink($tmpFile);
+		return $mime;
+	}
+	public function hash($type,$path,$raw = false) {
+		$tmpFile=$this->getLocalFile($path);
+		$hash=hash($type,$tmpFile,$raw);
+		unlink($tmpFile);
+		return $hash;
+	}
+	public function search($query) {
+		return $this->searchInDir($query);
+	}
+	public function getLocalFile($path) {
+		return $this->toTmpFile($path);
+	}
+	private function toTmpFile($path) {//no longer in the storage api, still useful here
+		$source=$this->fopen($path,'r');
+		if(!$source) {
+			return false;
+		}
+		if($pos=strrpos($path,'.')) {
+			$extension=substr($path,$pos);
+		}else{
+			$extension='';
+		}
+		$tmpFile=\OC_Helper::tmpFile($extension);
+		$target=fopen($tmpFile,'w');
+		\OC_Helper::streamCopy($source,$target);
+		return $tmpFile;
+	}
+	public function getLocalFolder($path) {
+		$baseDir=\OC_Helper::tmpFolder();
+		$this->addLocalFolder($path,$baseDir);
+		return $baseDir;
+	}
+	private function addLocalFolder($path,$target) {
+		if($dh=$this->opendir($path)) {
+			while($file=readdir($dh)) {
+				if($file!=='.' and $file!=='..') {
+					if($this->is_dir($path.'/'.$file)) {
+						mkdir($target.'/'.$file);
+						$this->addLocalFolder($path.'/'.$file,$target.'/'.$file);
+					}else{
+						$tmp=$this->toTmpFile($path.'/'.$file);
+						rename($tmp,$target.'/'.$file);
+					}
+				}
+			}
+		}
+	}
+
+	protected function searchInDir($query,$dir='') {
+		$files=array();
+		$dh=$this->opendir($dir);
+		if($dh) {
+			while($item=readdir($dh)) {
+				if ($item == '.' || $item == '..') continue;
+				if(strstr(strtolower($item), strtolower($query))!==false) {
+					$files[]=$dir.'/'.$item;
+				}
+				if($this->is_dir($dir.'/'.$item)) {
+					$files=array_merge($files,$this->searchInDir($query,$dir.'/'.$item));
+				}
+			}
+		}
+		return $files;
+	}
+
+	/**
+	 * check if a file or folder has been updated since $time
+	 * @param string $path
+	 * @param int $time
+	 * @return bool
+	 */
+	public function hasUpdated($path,$time) {
+		return $this->filemtime($path)>$time;
+	}
+
+	public function getCache($path=''){
+		return new \OC\Files\Cache\Cache($this);
+	}
+
+	public function getScanner($path=''){
+		return new \OC\Files\Cache\Scanner($this);
+	}
+
+	public function getPermissionsCache($path=''){
+		return new \OC\Files\Cache\Permissions($this);
+	}
+
+	public function getWatcher($path=''){
+		return new \OC\Files\Cache\Watcher($this);
+	}
+
+	/**
+	 * get the owner of a path
+	 * @param string $path The path to get the owner
+	 * @return string uid or false
+	 */
+	public function getOwner($path) {
+		return \OC_User::getUser();
+	}
+
+	/**
+	 * get the ETag for a file or folder
+	 *
+	 * @param string $path
+	 * @return string
+	 */
+	public function getETag($path){
+		$ETagFunction = \OC_Connector_Sabre_Node::$ETagFunction;
+		if($ETagFunction) {
+			$hash = call_user_func($ETagFunction, $path);
+			return $hash;
+		}else{
+			return uniqid();
+		}
+	}
+	
+	/**
+	 * clean a path, i.e. remove all redundant '.' and '..'
+	 * making sure that it can't point to higher than '/'
+	 * @param $path The path to clean
+	 * @return string cleaned path
+	 */
+	public function cleanPath($path) {
+		if (strlen($path) == 0 or $path[0] != '/') {
+			$path = '/' . $path;
+		}
+		
+		$chunks = explode('/', $path);
+		$output = array();
+		foreach ($chunks as $chunk) {
+			if ($chunk == '..') {
+				array_pop($output);
+			} else if ($chunk == '.') {
+			} else {
+				$output[] = $chunk;
+			}
+		}
+		return implode('/', $output);
+	}
+}
diff --git a/lib/files/storage/commontest.php b/lib/files/storage/commontest.php
new file mode 100644
index 00000000000..fbdb7fbf110
--- /dev/null
+++ b/lib/files/storage/commontest.php
@@ -0,0 +1,80 @@
+<?php
+
+/**
+* ownCloud
+*
+* @author Robin Appelman
+* @copyright 2012 Robin Appelman icewind@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/>.
+*
+*/
+
+/**
+ * test implementation for \OC\Files\Storage\Common with \OC\Files\Storage\Local
+ */
+
+namespace OC\Files\Storage;
+
+class CommonTest extends \OC\Files\Storage\Common{
+	/**
+	 * underlying local storage used for missing functions
+	 * @var \OC\Files\Storage\Local
+	 */
+	private $storage;
+
+	public function __construct($params) {
+		$this->storage=new \OC\Files\Storage\Local($params);
+	}
+
+	public function getId(){
+		return 'test::'.$this->storage->getId();
+	}
+	public function mkdir($path) {
+		return $this->storage->mkdir($path);
+	}
+	public function rmdir($path) {
+		return $this->storage->rmdir($path);
+	}
+	public function opendir($path) {
+		return $this->storage->opendir($path);
+	}
+	public function stat($path) {
+		return $this->storage->stat($path);
+	}
+	public function filetype($path) {
+		return $this->storage->filetype($path);
+	}
+	public function isReadable($path) {
+		return $this->storage->isReadable($path);
+	}
+	public function isUpdatable($path) {
+		return $this->storage->isUpdatable($path);
+	}
+	public function file_exists($path) {
+		return $this->storage->file_exists($path);
+	}
+	public function unlink($path) {
+		return $this->storage->unlink($path);
+	}
+	public function fopen($path, $mode) {
+		return $this->storage->fopen($path, $mode);
+	}
+	public function free_space($path) {
+		return $this->storage->free_space($path);
+	}
+	public function touch($path, $mtime=null) {
+		return $this->storage->touch($path, $mtime);
+	}
+}
\ No newline at end of file
diff --git a/lib/files/storage/local.php b/lib/files/storage/local.php
new file mode 100644
index 00000000000..d387a898320
--- /dev/null
+++ b/lib/files/storage/local.php
@@ -0,0 +1,252 @@
+<?php
+/**
+ * Copyright (c) 2012 Robin Appelman <icewind@owncloud.com>
+ * This file is licensed under the Affero General Public License version 3 or
+ * later.
+ * See the COPYING-README file.
+ */
+
+namespace OC\Files\Storage;
+
+if (\OC_Util::runningOnWindows()) {
+	require_once 'mappedlocal.php';
+} else {
+
+/**
+ * for local filestore, we only have to map the paths
+ */
+class Local extends \OC\Files\Storage\Common{
+	protected $datadir;
+	public function __construct($arguments) {
+		$this->datadir=$arguments['datadir'];
+		if(substr($this->datadir, -1)!=='/') {
+			$this->datadir.='/';
+		}
+	}
+	public function getId(){
+		return 'local::'.$this->datadir;
+	}
+	public function mkdir($path) {
+		return @mkdir($this->datadir.$path);
+	}
+	public function rmdir($path) {
+		return @rmdir($this->datadir.$path);
+	}
+	public function opendir($path) {
+		return opendir($this->datadir.$path);
+	}
+	public function is_dir($path) {
+		if(substr($path,-1)=='/') {
+			$path=substr($path, 0, -1);
+		}
+		return is_dir($this->datadir.$path);
+	}
+	public function is_file($path) {
+		return is_file($this->datadir.$path);
+	}
+	public function stat($path) {
+		$fullPath = $this->datadir . $path;
+		$statResult = stat($fullPath);
+
+		if ($statResult['size'] < 0) {
+			$size = self::getFileSizeFromOS($fullPath);
+			$statResult['size'] = $size;
+			$statResult[7] = $size;
+		}
+		return $statResult;
+	}
+	public function filetype($path) {
+		$filetype=filetype($this->datadir.$path);
+		if($filetype=='link') {
+			$filetype=filetype(realpath($this->datadir.$path));
+		}
+		return $filetype;
+	}
+	public function filesize($path) {
+		if($this->is_dir($path)) {
+			return 0;
+		}else{
+			$fullPath = $this->datadir . $path;
+			$fileSize = filesize($fullPath);
+			if ($fileSize < 0) {
+				return self::getFileSizeFromOS($fullPath);
+			}
+
+			return $fileSize;
+		}
+	}
+	public function isReadable($path) {
+		return is_readable($this->datadir.$path);
+	}
+	public function isUpdatable($path) {
+		return is_writable($this->datadir.$path);
+	}
+	public function file_exists($path) {
+		return file_exists($this->datadir.$path);
+	}
+	public function filemtime($path) {
+		return filemtime($this->datadir.$path);
+	}
+	public function touch($path, $mtime=null) {
+		// sets the modification time of the file to the given value.
+		// If mtime is nil the current time is set.
+		// note that the access time of the file always changes to the current time.
+		if(!is_null($mtime)) {
+			$result=touch( $this->datadir.$path, $mtime );
+		}else{
+			$result=touch( $this->datadir.$path);
+		}
+		if( $result ) {
+			clearstatcache( true, $this->datadir.$path );
+		}
+
+		return $result;
+	}
+	public function file_get_contents($path) {
+		return file_get_contents($this->datadir.$path);
+	}
+	public function file_put_contents($path, $data) {//trigger_error("$path = ".var_export($path, 1));
+		return file_put_contents($this->datadir.$path, $data);
+	}
+	public function unlink($path) {
+		return $this->delTree($path);
+	}
+	public function rename($path1, $path2) {
+		if (!$this->isUpdatable($path1)) {
+			\OC_Log::write('core','unable to rename, file is not writable : '.$path1,\OC_Log::ERROR);
+			return false;
+		}
+		if(! $this->file_exists($path1)) {
+			\OC_Log::write('core','unable to rename, file does not exists : '.$path1,\OC_Log::ERROR);
+			return false;
+		}
+
+		if($return=rename($this->datadir.$path1, $this->datadir.$path2)) {
+		}
+		return $return;
+	}
+	public function copy($path1, $path2) {
+		if($this->is_dir($path2)) {
+			if(!$this->file_exists($path2)) {
+				$this->mkdir($path2);
+			}
+			$source=substr($path1, strrpos($path1, '/')+1);
+			$path2.=$source;
+		}
+		return copy($this->datadir.$path1, $this->datadir.$path2);
+	}
+	public function fopen($path, $mode) {
+		if($return=fopen($this->datadir.$path, $mode)) {
+			switch($mode) {
+				case 'r':
+					break;
+				case 'r+':
+				case 'w+':
+				case 'x+':
+				case 'a+':
+					break;
+				case 'w':
+				case 'x':
+				case 'a':
+					break;
+			}
+		}
+		return $return;
+	}
+
+	public function getMimeType($path) {
+		if($this->isReadable($path)) {
+			return \OC_Helper::getMimeType($this->datadir . $path);
+		}else{
+			return false;
+		}
+	}
+
+	private function delTree($dir) {
+		$dirRelative=$dir;
+		$dir=$this->datadir.$dir;
+		if (!file_exists($dir)) return true;
+		if (!is_dir($dir) || is_link($dir)) return unlink($dir);
+		foreach (scandir($dir) as $item) {
+			if ($item == '.' || $item == '..') continue;
+			if(is_file($dir.'/'.$item)) {
+				if(unlink($dir.'/'.$item)) {
+				}
+			}elseif(is_dir($dir.'/'.$item)) {
+				if (!$this->delTree($dirRelative. "/" . $item)) {
+					return false;
+				};
+			}
+		}
+		if($return=rmdir($dir)) {
+		}
+		return $return;
+	}
+
+	private static function getFileSizeFromOS($fullPath) {
+		$name = strtolower(php_uname('s'));
+		// Windows OS: we use COM to access the filesystem
+		if (strpos($name, 'win') !== false) {
+			if (class_exists('COM')) {
+				$fsobj = new \COM("Scripting.FileSystemObject");
+				$f = $fsobj->GetFile($fullPath);
+				return $f->Size;
+			}
+		} else if (strpos($name, 'bsd') !== false) {
+			if (\OC_Helper::is_function_enabled('exec')) {
+				return (float)exec('stat -f %z ' . escapeshellarg($fullPath));
+			}
+		} else if (strpos($name, 'linux') !== false) {
+			if (\OC_Helper::is_function_enabled('exec')) {
+				return (float)exec('stat -c %s ' . escapeshellarg($fullPath));
+			}
+		} else {
+			\OC_Log::write('core', 'Unable to determine file size of "'.$fullPath.'". Unknown OS: '.$name, \OC_Log::ERROR);
+		}
+
+		return 0;
+	}
+
+	public function hash($path, $type, $raw=false) {
+		return hash_file($type, $this->datadir.$path, $raw);
+	}
+
+	public function free_space($path) {
+		return @disk_free_space($this->datadir.$path);
+	}
+
+	public function search($query) {
+		return $this->searchInDir($query);
+	}
+	public function getLocalFile($path) {
+		return $this->datadir.$path;
+	}
+	public function getLocalFolder($path) {
+		return $this->datadir.$path;
+	}
+
+	protected function searchInDir($query, $dir='') {
+		$files=array();
+		foreach (scandir($this->datadir.$dir) as $item) {
+			if ($item == '.' || $item == '..') continue;
+			if(strstr(strtolower($item), strtolower($query))!==false) {
+				$files[]=$dir.'/'.$item;
+			}
+			if(is_dir($this->datadir.$dir.'/'.$item)) {
+				$files=array_merge($files, $this->searchInDir($query, $dir.'/'.$item));
+			}
+		}
+		return $files;
+	}
+
+	/**
+	 * check if a file or folder has been updated since $time
+	 * @param string $path
+	 * @param int $time
+	 * @return bool
+	 */
+	public function hasUpdated($path, $time) {
+		return $this->filemtime($path)>$time;
+	}
+}
+}
diff --git a/lib/files/storage/mappedlocal.php b/lib/files/storage/mappedlocal.php
new file mode 100644
index 00000000000..80dd79bc41f
--- /dev/null
+++ b/lib/files/storage/mappedlocal.php
@@ -0,0 +1,335 @@
+<?php
+/**
+ * Copyright (c) 2012 Robin Appelman <icewind@owncloud.com>
+ * This file is licensed under the Affero General Public License version 3 or
+ * later.
+ * See the COPYING-README file.
+ */
+namespace OC\Files\Storage;
+
+/**
+ * for local filestore, we only have to map the paths
+ */
+class Local extends \OC\Files\Storage\Common{
+	protected $datadir;
+	private $mapper;
+
+	public function __construct($arguments) {
+		$this->datadir=$arguments['datadir'];
+		if(substr($this->datadir, -1)!=='/') {
+			$this->datadir.='/';
+		}
+
+		$this->mapper= new \OC\Files\Mapper();
+	}
+	public function __destruct() {
+		if (defined('PHPUNIT_RUN')) {
+			$this->mapper->removePath($this->datadir, true, true);
+		}
+	}
+	public function getId(){
+		return 'local::'.$this->datadir;
+	}
+	public function mkdir($path) {
+		return @mkdir($this->buildPath($path));
+	}
+	public function rmdir($path) {
+		if ($result = @rmdir($this->buildPath($path))) {
+			$this->cleanMapper($path);
+		}
+		return $result;
+	}
+	public function opendir($path) {
+		$files = array('.', '..');
+		$physicalPath= $this->buildPath($path);
+
+		$logicalPath = $this->mapper->physicalToLogic($physicalPath);
+		$dh = opendir($physicalPath);
+		while ($file = readdir($dh)) {
+			if ($file === '.' or $file === '..') {
+				continue;
+			}
+
+			$logicalFilePath = $this->mapper->physicalToLogic($physicalPath.DIRECTORY_SEPARATOR.$file);
+
+			$file= $this->mapper->stripRootFolder($logicalFilePath, $logicalPath);
+			$file = $this->stripLeading($file);
+			$files[]= $file;
+		}
+
+		\OC\Files\Stream\Dir::register('local-win32'.$path, $files);
+		return opendir('fakedir://local-win32'.$path);
+	}
+	public function is_dir($path) {
+		if(substr($path,-1)=='/') {
+			$path=substr($path, 0, -1);
+		}
+		return is_dir($this->buildPath($path));
+	}
+	public function is_file($path) {
+		return is_file($this->buildPath($path));
+	}
+	public function stat($path) {
+		$fullPath = $this->buildPath($path);
+		$statResult = stat($fullPath);
+
+		if ($statResult['size'] < 0) {
+			$size = self::getFileSizeFromOS($fullPath);
+			$statResult['size'] = $size;
+			$statResult[7] = $size;
+		}
+		return $statResult;
+	}
+	public function filetype($path) {
+		$filetype=filetype($this->buildPath($path));
+		if($filetype=='link') {
+			$filetype=filetype(realpath($this->buildPath($path)));
+		}
+		return $filetype;
+	}
+	public function filesize($path) {
+		if($this->is_dir($path)) {
+			return 0;
+		}else{
+			$fullPath = $this->buildPath($path);
+			$fileSize = filesize($fullPath);
+			if ($fileSize < 0) {
+				return self::getFileSizeFromOS($fullPath);
+			}
+
+			return $fileSize;
+		}
+	}
+	public function isReadable($path) {
+		return is_readable($this->buildPath($path));
+	}
+	public function isUpdatable($path) {
+		return is_writable($this->buildPath($path));
+	}
+	public function file_exists($path) {
+		return file_exists($this->buildPath($path));
+	}
+	public function filemtime($path) {
+		return filemtime($this->buildPath($path));
+	}
+	public function touch($path, $mtime=null) {
+		// sets the modification time of the file to the given value.
+		// If mtime is nil the current time is set.
+		// note that the access time of the file always changes to the current time.
+		if(!is_null($mtime)) {
+			$result=touch( $this->buildPath($path), $mtime );
+		}else{
+			$result=touch( $this->buildPath($path));
+		}
+		if( $result ) {
+			clearstatcache( true, $this->buildPath($path) );
+		}
+
+		return $result;
+	}
+	public function file_get_contents($path) {
+		return file_get_contents($this->buildPath($path));
+	}
+	public function file_put_contents($path, $data) {//trigger_error("$path = ".var_export($path, 1));
+		return file_put_contents($this->buildPath($path), $data);
+	}
+	public function unlink($path) {
+		return $this->delTree($path);
+	}
+	public function rename($path1, $path2) {
+		if (!$this->isUpdatable($path1)) {
+			\OC_Log::write('core','unable to rename, file is not writable : '.$path1,\OC_Log::ERROR);
+			return false;
+		}
+		if(! $this->file_exists($path1)) {
+			\OC_Log::write('core','unable to rename, file does not exists : '.$path1,\OC_Log::ERROR);
+			return false;
+		}
+
+		$physicPath1 = $this->buildPath($path1);
+		$physicPath2 = $this->buildPath($path2);
+		if($return=rename($physicPath1, $physicPath2)) {
+			// mapper needs to create copies or all children
+			$this->copyMapping($path1, $path2);
+			$this->cleanMapper($physicPath1, false, true);
+		}
+		return $return;
+	}
+	public function copy($path1, $path2) {
+		if($this->is_dir($path2)) {
+			if(!$this->file_exists($path2)) {
+				$this->mkdir($path2);
+			}
+			$source=substr($path1, strrpos($path1, '/')+1);
+			$path2.=$source;
+		}
+		if($return=copy($this->buildPath($path1), $this->buildPath($path2))) {
+			// mapper needs to create copies or all children
+			$this->copyMapping($path1, $path2);
+		}
+		return $return;
+	}
+	public function fopen($path, $mode) {
+		if($return=fopen($this->buildPath($path), $mode)) {
+			switch($mode) {
+				case 'r':
+					break;
+				case 'r+':
+				case 'w+':
+				case 'x+':
+				case 'a+':
+					break;
+				case 'w':
+				case 'x':
+				case 'a':
+					break;
+			}
+		}
+		return $return;
+	}
+
+	public function getMimeType($path) {
+		if($this->isReadable($path)) {
+			return \OC_Helper::getMimeType($this->buildPath($path));
+		}else{
+			return false;
+		}
+	}
+
+	private function delTree($dir, $isLogicPath=true) {
+		$dirRelative=$dir;
+		if ($isLogicPath) {
+			$dir=$this->buildPath($dir);
+		}
+		if (!file_exists($dir)) {
+			return true;
+		}
+		if (!is_dir($dir) || is_link($dir)) {
+			if($return=unlink($dir)) {
+				$this->cleanMapper($dir, false);
+				return $return;
+			}
+		}
+		foreach (scandir($dir) as $item) {
+			if ($item == '.' || $item == '..') {
+				continue;
+			}
+			if(is_file($dir.'/'.$item)) {
+				if(unlink($dir.'/'.$item)) {
+					$this->cleanMapper($dir.'/'.$item, false);
+				}
+			}elseif(is_dir($dir.'/'.$item)) {
+				if (!$this->delTree($dir. "/" . $item, false)) {
+					return false;
+				};
+			}
+		}
+		if($return=rmdir($dir)) {
+			$this->cleanMapper($dir, false);
+		}
+		return $return;
+	}
+
+	private static function getFileSizeFromOS($fullPath) {
+		$name = strtolower(php_uname('s'));
+		// Windows OS: we use COM to access the filesystem
+		if (strpos($name, 'win') !== false) {
+			if (class_exists('COM')) {
+				$fsobj = new \COM("Scripting.FileSystemObject");
+				$f = $fsobj->GetFile($fullPath);
+				return $f->Size;
+			}
+		} else if (strpos($name, 'bsd') !== false) {
+			if (\OC_Helper::is_function_enabled('exec')) {
+				return (float)exec('stat -f %z ' . escapeshellarg($fullPath));
+			}
+		} else if (strpos($name, 'linux') !== false) {
+			if (\OC_Helper::is_function_enabled('exec')) {
+				return (float)exec('stat -c %s ' . escapeshellarg($fullPath));
+			}
+		} else {
+			\OC_Log::write('core', 'Unable to determine file size of "'.$fullPath.'". Unknown OS: '.$name, \OC_Log::ERROR);
+		}
+
+		return 0;
+	}
+
+	public function hash($path, $type, $raw=false) {
+		return hash_file($type, $this->buildPath($path), $raw);
+	}
+
+	public function free_space($path) {
+		return @disk_free_space($this->buildPath($path));
+	}
+
+	public function search($query) {
+		return $this->searchInDir($query);
+	}
+	public function getLocalFile($path) {
+		return $this->buildPath($path);
+	}
+	public function getLocalFolder($path) {
+		return $this->buildPath($path);
+	}
+
+	protected function searchInDir($query, $dir='', $isLogicPath=true) {
+		$files=array();
+		$physicalDir = $this->buildPath($dir);
+		foreach (scandir($physicalDir) as $item) {
+			if ($item == '.' || $item == '..')
+				continue;
+			$physicalItem = $this->mapper->physicalToLogic($physicalDir.DIRECTORY_SEPARATOR.$item);
+			$item = substr($physicalItem, strlen($physicalDir)+1);
+
+			if(strstr(strtolower($item), strtolower($query)) !== false) {
+				$files[]=$dir.'/'.$item;
+			}
+			if(is_dir($physicalItem)) {
+				$files=array_merge($files, $this->searchInDir($query, $physicalItem, false));
+			}
+		}
+		return $files;
+	}
+
+	/**
+	 * check if a file or folder has been updated since $time
+	 * @param string $path
+	 * @param int $time
+	 * @return bool
+	 */
+	public function hasUpdated($path, $time) {
+		return $this->filemtime($path)>$time;
+	}
+
+	private function buildPath($path, $create=true) {
+		$path = $this->stripLeading($path);
+		$fullPath = $this->datadir.$path;
+		return $this->mapper->logicToPhysical($fullPath, $create);
+	}
+
+	private function cleanMapper($path, $isLogicPath=true, $recursive=true) {
+		$fullPath = $path;
+		if ($isLogicPath) {
+			$fullPath = $this->datadir.$path;
+		}
+		$this->mapper->removePath($fullPath, $isLogicPath, $recursive);
+	}
+
+	private function copyMapping($path1, $path2) {
+		$path1 = $this->stripLeading($path1);
+		$path2 = $this->stripLeading($path2);
+
+		$fullPath1 = $this->datadir.$path1;
+		$fullPath2 = $this->datadir.$path2;
+
+		$this->mapper->copy($fullPath1, $fullPath2);
+	}
+
+	private function stripLeading($path) {
+		if(strpos($path, '/') === 0) {
+			$path = substr($path, 1);
+		}
+
+		return $path;
+	}
+}
diff --git a/lib/files/storage/storage.php b/lib/files/storage/storage.php
new file mode 100644
index 00000000000..2cc835236ba
--- /dev/null
+++ b/lib/files/storage/storage.php
@@ -0,0 +1,88 @@
+<?php
+/**
+ * Copyright (c) 2012 Robin Appelman <icewind@owncloud.com>
+ * This file is licensed under the Affero General Public License version 3 or
+ * later.
+ * See the COPYING-README file.
+ */
+
+namespace OC\Files\Storage;
+
+/**
+ * Provide a common interface to all different storage options
+ */
+interface Storage{
+	public function __construct($parameters);
+	public function getId();
+	public function mkdir($path);
+	public function rmdir($path);
+	public function opendir($path);
+	public function is_dir($path);
+	public function is_file($path);
+	public function stat($path);
+	public function filetype($path);
+	public function filesize($path);
+	public function isCreatable($path);
+	public function isReadable($path);
+	public function isUpdatable($path);
+	public function isDeletable($path);
+	public function isSharable($path);
+	public function getPermissions($path);
+	public function file_exists($path);
+	public function filemtime($path);
+	public function file_get_contents($path);
+	public function file_put_contents($path,$data);
+	public function unlink($path);
+	public function rename($path1,$path2);
+	public function copy($path1,$path2);
+	public function fopen($path,$mode);
+	public function getMimeType($path);
+	public function hash($type,$path,$raw = false);
+	public function free_space($path);
+	public function search($query);
+	public function touch($path, $mtime=null);
+	public function getLocalFile($path);// get a path to a local version of the file, whether the original file is local or remote
+	public function getLocalFolder($path);// get a path to a local version of the folder, whether the original file is local or remote
+	/**
+	 * check if a file or folder has been updated since $time
+	 * @param int $time
+	 * @return bool
+	 *
+	 * hasUpdated for folders should return at least true if a file inside the folder is add, removed or renamed.
+	 * returning true for other changes in the folder is optional
+	 */
+	public function hasUpdated($path,$time);
+
+	/**
+	 * @param string $path
+	 * @return \OC\Files\Cache\Cache
+	 */
+	public function getCache($path='');
+	/**
+	 * @param string $path
+	 * @return \OC\Files\Cache\Scanner
+	 */
+	public function getScanner($path='');
+
+	public function getOwner($path);
+
+	/**
+	 * @param string $path
+	 * @return \OC\Files\Cache\Permissions
+	 */
+	public function getPermissionsCache($path='');
+
+	/**
+	 * @param string $path
+	 * @return \OC\Files\Cache\Watcher
+	 */
+	public function getWatcher($path='');
+
+	/**
+	 * get the ETag for a file or folder
+	 *
+	 * @param string $path
+	 * @return string
+	 */
+	public function getETag($path);
+}
diff --git a/lib/files/storage/temporary.php b/lib/files/storage/temporary.php
new file mode 100644
index 00000000000..d84dbda2e39
--- /dev/null
+++ b/lib/files/storage/temporary.php
@@ -0,0 +1,27 @@
+<?php
+/**
+ * Copyright (c) 2012 Robin Appelman <icewind@owncloud.com>
+ * This file is licensed under the Affero General Public License version 3 or
+ * later.
+ * See the COPYING-README file.
+ */
+
+namespace OC\Files\Storage;
+
+/**
+ * local storage backend in temporary folder for testing purpose
+ */
+class Temporary extends Local{
+	public function __construct($arguments) {
+		parent::__construct(array('datadir' => \OC_Helper::tmpFolder()));
+	}
+
+	public function cleanUp() {
+		\OC_Helper::rmdirr($this->datadir);
+	}
+
+	public function __destruct() {
+		parent::__destruct();
+		$this->cleanUp();
+	}
+}