Initial version of remote ownCloud access through filesystem abstraction

1 files changed, 323 insertions, 0 deletions

diff --git a/inc/lib_remotestorage.php b/inc/lib_remotestorage.php
new file mode 100644
index 00000000000..882f281e413
--- /dev/null
+++ b/inc/lib_remotestorage.php
@@ -0,0 +1,323 @@
+<?php
+
+/**
+* ownCloud
+*
+* @author Frank Karlitschek 
+* @copyright 2010 Frank Karlitschek karlitschek@kde.org 
+* 
+* 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 Lesser General Public 
+* License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+* 
+*/
+
+
+class OC_FILESTORAGE_REMOTE extends OC_FILESTORAGE{
+	private $url;
+	private $username;
+	private $password;
+	private $remote;
+	private $statCache;
+	private $statCacheDir=false;
+	private $changed=array();
+	
+	private function cacheDir($dir){
+		if($this->statCacheDir!=$dir or $this->statCacheDir===false){
+			$this->statCache=$this->remote->getFiles($dir);
+			$keys=array_keys($this->statCache);
+			$this->statCacheDir=$dir;
+		}
+	}
+	
+	public function __construct($arguments){
+		$this->url=$arguments['url'];
+		$this->username=$arguments['username'];
+		$this->password=$arguments['password'];
+		$this->remote=OC_CONNECT::connect($this->url,$this->username,$this->password);
+	}
+	public function mkdir($path){
+		$parent=dirname($path);
+		$name=substr($path,strlen($parent)+1);
+		$return=$this->remote->newFile($parent,$name,'dir');
+		if($return){
+			$this->notifyObservers($path,OC_FILEACTION_CREATE);
+		}
+		return $return;
+	}
+	public function rmdir($path){
+		$parent=dirname($path);
+		$name=substr($path,strlen($parent)+1);
+		$return=$this->remote->delete($parent,$name);
+		if($return){
+			$this->notifyObservers($path,OC_FILEACTION_DELETE);
+		}
+		return $return;
+	}
+	public function opendir($path){
+		$this->cacheDir($path);
+		$dirs=array_keys($this->statCache);
+		$id=uniqid();
+		global $FAKEDIRS;
+		$FAKEDIRS[$id]=$dirs;
+		if($return=opendir("fakedir://$id")){
+			$this->notifyObservers($path,OC_FILEACTION_READ);
+		}
+		return $return;
+	}
+	public function is_dir($path){
+		$parent=dirname($path);
+		$name=substr($path,strlen($parent)+1);
+		$this->cacheDir($path);
+		if($path=='' or $path=='/'){
+			return true;
+		}
+		if(!isset($this->statCache[$name])){
+			return false;
+		}
+		return ($this->statCache[$name]['type'=='dir']);
+	}
+	public function is_file($path){
+		$parent=dirname($path);
+		$name=substr($path,strlen($parent)+1);
+		$this->cacheDir($parent);
+		if(!isset($this->statCache[$name])){
+			return false;
+		}
+		return ($this->statCache[$name]['type'!='dir']);
+	}
+	public function stat($path){
+		$parent=dirname($path);
+		$name=substr($path,strlen($parent)+1);
+		$this->cacheDir($parent);
+		if(!isset($this->statCache[$name])){
+			return $false;
+		}
+		return $this->statCache[$name];
+	}
+	public function filetype($path){
+		$parent=dirname($path);
+		$name=substr($path,strlen($parent)+1);
+		$this->cacheDir($parent);
+		if(!isset($this->statCache[$name])){
+			return false;
+		}
+		return $this->statCache[$name]['type'];
+	}
+	public function filesize($path){
+		$parent=dirname($path);
+		$name=substr($path,strlen($parent)+1);
+		$this->cacheDir($parent);
+		if(!isset($this->statCache[$name])){
+			return $false;
+		}
+		return $this->statCache[$name]['size'];
+	}
+	public function is_readable($path){
+		$parent=dirname($path);
+		$name=substr($path,strlen($parent)+1);
+		$this->cacheDir($parent);
+		if(!isset($this->statCache[$name])){
+			return false;
+		}
+		return $this->statCache[$name]['readable'];
+	}
+	public function is_writeable($path){
+		$parent=dirname($path);
+		$name=substr($path,strlen($parent)+1);
+		$this->cacheDir($parent);
+		if(!isset($this->statCache[$name])){
+			return false;
+		}
+		return $this->statCache[$name]['writeable'];
+	}
+	public function file_exists($path){
+		$parent=dirname($path);
+		$name=substr($path,strlen($parent)+1);
+		$this->cacheDir($parent);
+		return isset($this->statCache[$name]);
+	}
+	public function readfile($path){
+		$parent=dirname($path);
+		$name=substr($path,strlen($parent)+1);
+		$file=$this->remote->getFile($parent,$name);
+		readfile($file);
+		unlink($file);
+	}
+	public function filectime($path){
+		$parent=dirname($path);
+		$name=substr($path,strlen($parent)+1);
+		$this->cacheDir($parent);
+		if(!isset($this->statCache[$name])){
+			return false;
+		}
+		return $this->statCache[$name]['ctime'];
+	}
+	public function filemtime($path){
+		$parent=dirname($path);
+		$name=substr($path,strlen($parent)+1);
+		$this->cacheDir($parent);
+		if(!isset($this->statCache[$name])){
+			return false;
+		}
+		return $this->statCache[$name]['mtime'];
+	}
+	public function fileatime($path){
+		$parent=dirname($path);
+		$name=substr($path,strlen($parent)+1);
+		$this->cacheDir($parent);
+		if(!isset($this->statCache[$name])){
+			return false;
+		}
+		return $this->statCache[$name]['atime'];
+	}
+	public function file_get_contents($path){
+		$parent=dirname($path);
+		$name=substr($path,strlen($parent)+1);
+		$file=$this->remote->getFile($parent,$name);
+		file_get_contents($file);
+		unlink($file);
+	}
+	public function file_put_contents($path,$data){
+		$parent=dirname($path);
+		$name=substr($path,strlen($parent)+1);
+		$file=$this->remote->getFile($parent,$name);
+		$file=tempnam(sys_get_temp_dir(),'oc_');
+		file_put_contents($file,$data);
+		if($return=$this->remote->sendTmpFile($file,$parent,$name)){
+			$this->notifyObservers($path,OC_FILEACTION_WRITE);
+		}
+	}
+	public function unlink($path){
+		$parent=dirname($path);
+		$name=substr($path,strlen($parent)+1);
+		if($return=$this->remote->delete($paren,$name)){
+			$this->notifyObservers($path,OC_FILEACTION_DELETE);
+		}
+		return $return;
+	}
+	public function rename($path1,$path2){
+		$parent1=dirname($path1);
+		$name1=substr($path1,strlen($parent1)+1);
+		$parent2=dirname($path2);
+		$name2=substr($path2,strlen($parent2)+1);
+		if($return=$this->remote->move($parent1,$name1,$parent2,$name2)){
+			$this->notifyObservers($path1.'->'.$path2,OC_FILEACTION_RENAME);
+		}
+		return $return;
+	}
+	public function copy($path1,$path2){
+		$parent1=dirname($path1);
+		$name1=substr($path1,strlen($parent1)+1);
+		$parent2=dirname($path2);
+		$name2=substr($path2,strlen($parent2)+1);
+		if($return=$this->copy->rename($parent1,$name1,$parent2,$name2)){
+			$this->notifyObservers($path1.'->'.$path2,OC_FILEACTION_RENAME);
+		}
+		return $return;
+	}
+	public function fopen($path,$mode){
+		$changed=false;
+		$parent=dirname($path);
+		$name=substr($path,strlen($parent)+1);
+		$file=$this->remote->getFile($parent,$name);
+		if($return=fopen($file,$mode)){
+			switch($mode){
+				case 'r':
+					$this->notifyObservers($path,OC_FILEACTION_READ);
+					break;
+				case 'r+':
+				case 'w+':
+				case 'x+':
+				case 'a+':
+					$this->notifyObservers($path,OC_FILEACTION_READ | OC_FILEACTION_WRITE);
+					$this->changed[]=array('dir'=>$parent,'file'=>$name,'tmp'=>$file);
+					break;
+				case 'w':
+				case 'x':
+				case 'a':
+					$this->notifyObservers($path,OC_FILEACTION_WRITE);
+					$this->changed[]=array('dir'=>$parent,'file'=>$name,'tmp'=>$file);
+					break;
+			}
+		}
+		return $return;
+	}
+	
+	public function getMimeType($path){
+		$parent=dirname($path);
+		$name=substr($path,strlen($parent)+1);
+		if(substr($name,0,1)=='/'){
+			$name=substr($name,1);
+		}
+		$this->cacheDir($parent);
+		if(!isset($this->statCache[$name])){
+			return false;
+		}
+		return $this->statCache[$name]['mime'];
+	}
+	
+	public function toTmpFile($path){
+		$parent=dirname($path);
+		$name=substr($path,strlen($parent)+1);
+		if(substr($name,0,1)=='/'){
+			$name=substr($name,1);
+		}
+		$filename=$this->remote->getFile($parent,$name);
+		if($filename){
+			$this->notifyObservers($path,OC_FILEACTION_READ);
+			return $filename;
+		}else{
+			return false;
+		}
+	}
+	
+	public function fromTmpFile($tmpFile,$path){
+		$parent=dirname($path);
+		$name=substr($path,strlen($parent)+1);
+		if($this->remote->sendTmpFile($tmpFile,$parent,$name)){
+			$this->notifyObservers($path,OC_FILEACTION_CREATE);
+			return true;
+		}else{
+			return false;
+		}
+	}
+	
+	public function delTree($dir) {
+		$parent=dirname($dir);
+		$name=substr($dir,strlen($parent)+1);
+		$return=$this->remote->delete($parent,$name);
+		if($return=rmdir($dir)){
+			$this->notifyObservers($dir,OC_FILEACTION_DELETE);
+		}
+		return $return;
+	}
+	
+	public function find($path){
+		return $this->getTree($path);
+	}
+	
+	public function getTree($dir) {
+		if($return=$this->remote->getTree($dir)){
+			$this->notifyObservers($dir,OC_FILEACTION_READ);
+		}
+		return $return;
+	}
+	
+	public function __destruct(){
+		foreach($this->changed as $changed){
+			$this->remote->sendTmpFile($changed['tmp'],$changed['dir'],$changed['file']);
+		}
+	}
+}
+
+?>