ftp_sockets::_data_prepare

	function _data_prepare($mode=FTP_ASCII) {
		if(!$this->_settype($mode)) return FALSE;
		$this->SendMSG("Creating data socket");
		$this->_ftp_data_sock = @socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
		if ($this->_ftp_data_sock < 0) {
			$this->PushError('_data_prepare','socket create failed',socket_strerror(socket_last_error($this->_ftp_data_sock)));
			return FALSE;
		}
		if(!$this->_settimeout($this->_ftp_data_sock)) {
			$this->_data_close();
			return FALSE;
		}
		if($this->_passive) {
			if(!$this->_exec("PASV", "pasv")) {
				$this->_data_close();
				return FALSE;
			}
			if(!$this->_checkCode()) {
				$this->_data_close();
				return FALSE;
			}
			$ip_port = explode(",", preg_replace("/^.+ \\(?([0-9]{1,3},[0-9]{1,3},[0-9]{1,3},[0-9]{1,3},[0-9]+,[0-9]+)\\)?.*$/s", "\\1", $this->_message));
			$this->_datahost=$ip_port[0].".".$ip_port[1].".".$ip_port[2].".".$ip_port[3];
			$this->_dataport=(((int)$ip_port[4])<<8) + ((int)$ip_port[5]);
			$this->SendMSG("Connecting to ".$this->_datahost.":".$this->_dataport);
			if(!@socket_connect($this->_ftp_data_sock, $this->_datahost, $this->_dataport)) {
				$this->PushError("_data_prepare","socket_connect", socket_strerror(socket_last_error($this->_ftp_data_sock)));
				$this->_data_close();
				return FALSE;
			}
			else $this->_ftp_temp_sock=$this->_ftp_data_sock;
		} else {
			if(!@socket_getsockname($this->_ftp_control_sock, $addr, $port)) {
				$this->PushError("_data_prepare","can't get control socket information", socket_strerror(socket_last_error($this->_ftp_control_sock)));
				$this->_data_close();
				return FALSE;
			}
			if(!@socket_bind($this->_ftp_data_sock,$addr)){
				$this->PushError("_data_prepare","can't bind data socket", socket_strerror(socket_last_error($this->_ftp_data_sock)));
				$this->_data_close();
				return FALSE;
			}
			if(!@socket_listen($this->_ftp_data_sock)) {
				$this->PushError("_data_prepare","can't listen data socket", socket_strerror(socket_last_error($this->_ftp_data_sock)));
				$this->_data_close();
				return FALSE;
			}
			if(!@socket_getsockname($this->_ftp_data_sock, $this->_datahost, $this->_dataport)) {
				$this->PushError("_data_prepare","can't get data socket information", socket_strerror(socket_last_error($this->_ftp_data_sock)));
				$this->_data_close();
				return FALSE;
			}
			if(!$this->_exec('PORT '.str_replace('.',',',$this->_datahost.'.'.($this->_dataport>>8).'.'.($this->_dataport&0x00FF)), "_port")) {
				$this->_data_close();
				return FALSE;
			}
			if(!$this->_checkCode()) {
				$this->_data_close();
				return FALSE;
			}
		}
		return TRUE;
	}