Remote Mail Drive Code

<?
class RMDFS {
	var $FS = null;
	var $openlink = null;
	var $path = array();
	function RMDFS(){
		$data=file_get_contents('FS.txt');
		$this->FS=unserialize($data);
		$this->FS['type']=1;
	}

	function close(){
		$f=fopen('FS.txt','wb');
		fwrite($f,serialize($this->FS));
		fclose($f);

		//$this->FS=unserialize($data);
	}

	function correct_name($name){
		return str_replace(array('\\\\','\\',"'",':','<','>','*','?','"','|'),array('\\','/',"\\'",'','','','','','','',''),$name);
	}
	function is_dir(){
		return ($this->openlink['type'])?true:false;
	}
	function is_file(){
		return ($this->openlink['type'])?false:true;
	}
	function open($path=''){
		$path=$this->correct_name($path);
		$path =explode('/',$path);
		$dinvar='$this->FS';
		for($i=0;$i<count($path);$i++){
			if($path[$i]!=''){
				$dinvar.="['{$path[$i]}']";
			}
		}
		echo "\$is=isset($dinvar);";
		eval("\$is=isset($dinvar);");
		print_r($this->FS);
		if($is){
			eval("\$this->openlink=&$dinvar;");
			return true;
		}else{
			return false;
		}
	}

	function mkdir($dirname){
		$dirname=basename($this->correct_name($dirname));//TODO: correct '
		if($this->openlink!=null){
			if($this->openlink['type']==1){
				if(isset($this->openlink[$dirname]['type'])){
					return false;
				}else{
					$this->openlink[$dirname]['type']=1;
					return true;
				}
			}else{
				return false;
			}
		}else{
			return false;
		}
	}

	function mkfile($filename,$data_arr){
		$filename=basename($this->correct_name($filename));//TODO: correct '
		if($this->openlink!=null){
			if($this->openlink['type']==1){
				if(isset($this->openlink[$filename]['type'])){
					return false;
				}else{
					$this->openlink[$filename]['type']=0;
					$this->openlink[$filename]=array_merge($this->openlink[$filename],$data_arr);
					return true;
				}
			}else{
				return false;
			}
		}else{
			return false;
		}
	}

	function get_file_list(){
		if($this->openlink!=null){
			if($this->openlink['type']==1){
				$keys=array_keys($this->openlink);
				$ret=array();
				$j=0;
				for($i=0;$i<count($keys);$i++){
					if($keys[$i]!='type'){
						$ret[$j]['name']=$keys[$i];
						$ret[$j]['type']=$this->openlink[$keys[i]]['type'];
						$j++;
					}
				}
				return $ret;
			}else{
				return false;
			}
		}else{
			return false;
		}
	}
	function rename($oldname,$newname){

	}

}
?>