private long FileSize(string FileName)
{
if (!Logged)
{
Status_text.AppendText("Login First\n");
return(0);
}
SendCommand("SIZE " + FileName);
long Filesize = long.Parse(Result.Substring(4));
return(Filesize);
}
private void ChangeDir(string Path)
{
if (!Logged)
{
Status_text.AppendText("Login First\n");
Changed = false;
return;
}
SendCommand("CWD " + Path);
SendCommand("PWD");
Path = StatusMessage.Split('"')[1];
Status_text.AppendText("Current Working Directory is " + Path + "\n");
Changed = true;
}
private string SplitResponse()
{
try
{
while (true)
{
Bytes = FTPSocket.Receive(Buffer, Buffer.Length, 0);
StatusMessage += Encoding.ASCII.GetString(Buffer, 0, Bytes);
if (Bytes < Buffer.Length)
{
break;
}
}
string[] msg = StatusMessage.Split('\n');
if (StatusMessage.Length > 2)
{
StatusMessage = msg[msg.Length - 2];
}
else
{
StatusMessage = msg[0];
}
if (!StatusMessage.Substring(3, 1).Equals(" "))
{
return(SplitResponse());
}
for (int i = 0; i < msg.Length - 1; i++)
{
Status_text.AppendText(msg[i] + "\n");
}
return(StatusMessage);
}
catch (Exception ex)
{
Status_text.AppendText("Status : ERROR. " + ex.Message + "\n");
FTPSocket.Close();
return("");
}
}
private void Login()
{
if (Logged)
{
CloseConnection();
}
IPAddress remoteAddress = null;
IPEndPoint addressEndPoint = null;
Status_text.AppendText("Opening Connection to: " + Server + "\n");
try
{
FTPSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
Status_text.AppendText("Resolving IP Address\n");
remoteAddress = Dns.GetHostEntry(Server).AddressList[0];
Status_text.AppendText("IP Address Found -> " + remoteAddress.ToString() + "\n");
addressEndPoint = new IPEndPoint(remoteAddress, Port);
Status_text.AppendText("EndPoint Found -> " + addressEndPoint.ToString() + "\n");
FTPSocket.Connect(addressEndPoint);
SendCommand("USER " + UserName);
SendCommand("PASS " + Password);
Logged = true;
Status_text.AppendText("Connected to " + Server + "\n");
}
catch (Exception ex)
{
if (FTPSocket != null && FTPSocket.Connected)
{
FTPSocket.Close();
}
Status_text.AppendText("Couldn't connect to remote server. " + ex.Message + "\n");
return;
}
ReadResponse();
ChangeDir(Path);
}
public string[] GetListFiles()
{
DataSock = OpenSocketForTransfer();
if (DataSock == null)
{
Status_text.AppendText("Socket Error\n");
return(Msg);
}
SendCommand("MLSD");
StatusMessage = "";
DateTime timeout = DateTime.Now.AddSeconds(30);
while (timeout > DateTime.Now)
{
int Bytes = DataSock.Receive(Buffer, Buffer.Length, 0);
StatusMessage += Encoding.ASCII.GetString(Buffer, 0, Bytes);
if (Bytes < Buffer.Length)
{
break;
}
}
Msg = StatusMessage.Replace("\r", "").Split('\n');
DataSock.Close();
if (StatusMessage.Contains("No files found"))
{
Msg = new string[] { }
}
;
ReadResponse();
if (StatusCode != 226)
{
Msg = new string[] { }
}
;
return(Msg);
}
private Socket OpenSocketForTransfer()
{
SendCommand("PASV");
Socket tranferSocket = null;
IPEndPoint ipEndPoint = null;
int indx1 = Result.IndexOf('(');
int indx2 = Result.IndexOf(')');
string IpPort = Result.Substring((indx1 + 1), (indx2 - indx1) - 1);
int[] Parts = new int[6];
int PartCount = 0;
string Buffer = "";
for (int i = 0; i < IpPort.Length && PartCount <= 6; i++)
{
char chr = char.Parse(IpPort.Substring(i, 1));
if (char.IsDigit(chr))
{
Buffer += chr;
}
else if (chr != ',')
{
Status_text.AppendText("Wrong PASV result -> " + Result);
return(null);
}
else
{
if (chr == ',' || i + 1 == IpPort.Length)
{
try
{
Parts[PartCount++] = int.Parse(Buffer);
Buffer = "";
}
catch (Exception)
{
Status_text.AppendText("Wrong PASV result: " + Result + "\n");
return(null);
}
}
}
}
Parts[PartCount] = int.Parse(Buffer);
string ipAddress = Parts[0] + "." + Parts[1] + "." + Parts[2] + "." + Parts[3];
int port = (Parts[4] << 8) + Parts[5];
try
{
tranferSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
ipEndPoint = new IPEndPoint(IPAddress.Parse(ipAddress), port);
tranferSocket.Connect(ipEndPoint);
}
catch (Exception ex)
{
if (tranferSocket != null && tranferSocket.Connected)
{
tranferSocket.Close();
}
Status_text.AppendText("Status : Can't connect to remote server ->" + ex.Message + " \n");
return(null);
}
return(tranferSocket);
}