private FtpReply SendCommand(string command, bool setStatus = true)
{
try
{
if (setStatus)
{
ConnectionStatus = FtpConnectionStatus.Busy;
}
SendData(command);
FtpReply reply = ReadReply();
if (setStatus)
{
ConnectionStatus = FtpConnectionStatus.Ready;
}
return(reply);
}
catch (SocketException ex)
{
if (ex.ErrorCode == 10035 || ex.ErrorCode == 10050 || ex.ErrorCode == 10051 || ex.ErrorCode == 10052 || ex.ErrorCode == 10053 || ex.ErrorCode == 10060 || ex.ErrorCode == 10064)
{
ConnectionStatus = FtpConnectionStatus.NotConnected;
client_socket = null;
Close();
}
else
{
ConnectionStatus = FtpConnectionStatus.Ready;
}
throw;
}
}
public string[] GetFileList(string pathname)
{
// Check opened connection
if (!Connected)
{
throw new FtpNotConnectedException();
}
// Set connection status to Busy
this.ConnectionStatus = FtpConnectionStatus.Busy;
// Create data socket
Socket socket = CreateDataSocket();
// Send command
FtpReply reply = SendCommand(FtpCommands.NLST(pathname), false);
// Raise exception if wrong reply
if (reply.ReplyCode != FtpReplyCode.DataConnectionAlreadyOpenTransferStarting && reply.ReplyCode != FtpReplyCode.FileStatusOk)
{
this.ConnectionStatus = FtpConnectionStatus.Ready;
throw new FtpException(reply);
}
// Set connection status to Transfering
this.ConnectionStatus = FtpConnectionStatus.Transfering;
// Read data
string text = String.Empty;
int num;
do
{
num = socket.Receive(this.buffer, this.buffer.Length, SocketFlags.None);
text += Encoding.ASCII.GetString(this.buffer, 0, num);
}while (num > 0);
// Close data socket
socket.Close();
// Set connection status back to Busy
this.ConnectionStatus = FtpConnectionStatus.Busy;
// Read end data transfer reply
reply = ReadReply();
// Raise exception when wrong reply
if (reply.ReplyCode != FtpReplyCode.ClosingDataConnection && reply.ReplyCode != FtpReplyCode.RequestedFileActionCompleted)
{
this.ConnectionStatus = FtpConnectionStatus.Ready;
throw new FtpException(reply);
}
// Set connection status to Ready
this.ConnectionStatus = FtpConnectionStatus.Ready;
// Return list of files
return(text.Split('\n'));
}
public void Close()
{
// Close socket ff exists
if (client_socket != null)
{
SendCommand(FtpCommands.QUIT());
if (client_socket.Connected)
{
client_socket.Close();
}
}
client_socket.Dispose();
client_socket = null;
// Raise ConnectionClosed event if connected
if (ConnectionStatus != FtpConnectionStatus.NotConnected)
{
ConnectionClosed(this, new EventArgs());
}
// Set connection status
ConnectionStatus = FtpConnectionStatus.NotConnected;
Connected = false;
}
public void DownloadFile(string remoteFilename, string localFilename, bool createDirectoryIfNotExists)
{
// Check opened connection
if (!Connected)
{
throw new FtpNotConnectedException();
}
// Set connection status
ConnectionStatus = FtpConnectionStatus.Busy;
// Create local directory if not exists
FileInfo fileInfo = new FileInfo(localFilename);
if (createDirectoryIfNotExists)
{
DirectoryInfo directoryInfo = new DirectoryInfo(fileInfo.DirectoryName);
if (!directoryInfo.Exists)
{
directoryInfo.Create();
}
}
// Set binary mode
SetBinaryMode(true);
// Open data socket
Socket socket = this.CreateDataSocket();
// Open file
FileStream fileStream = new FileStream(localFilename, FileMode.OpenOrCreate);
// Send command retrieve
FtpReply reply = SendCommand(FtpCommands.RETR(remoteFilename));
// Raise exception when wrong reply
if (reply.ReplyCode != FtpReplyCode.FileStatusOk && reply.ReplyCode != FtpReplyCode.DataConnectionAlreadyOpenTransferStarting && reply.ReplyCode != FtpReplyCode.RestartMarkerReply)
{
throw new FtpException(reply);
}
// Read data from data socket
int num;
do
{
num = socket.Receive(this.buffer, this.buffer.Length, SocketFlags.None);
fileStream.Write(this.buffer, 0, num);
}while (num > 0);
// Close file
fileStream.Close();
// Close data socket
if (socket.Connected)
{
socket.Close();
}
// Read end of transfer message
reply = ReadReply();
// Raise exception when wrong reply
if (reply.ReplyCode != FtpReplyCode.ClosingDataConnection && reply.ReplyCode != FtpReplyCode.RequestedFileActionCompleted)
{
throw new FtpException(reply);
}
}
public void UploadFile(string localFilename, string remoteFilename, bool createDirectoryIfNotExists)
{
// Check opened connection
if (!Connected)
{
throw new FtpNotConnectedException();
}
// Set connection status
this.ConnectionStatus = FtpConnectionStatus.Busy;
// Create directory if not exists
if (createDirectoryIfNotExists)
{
if (remoteFilename.LastIndexOf('/') != -1)
{
int length = remoteFilename.LastIndexOf('/');
string pathname = remoteFilename.Substring(0, length);
if (!DirectoryExists(pathname))
{
CreateDirectory(pathname);
}
}
if (remoteFilename.LastIndexOf('\\') != -1)
{
int length = remoteFilename.LastIndexOf('\\');
string pathname2 = remoteFilename.Substring(0, length);
if (!DirectoryExists(pathname2))
{
CreateDirectory(pathname2);
}
}
}
// Set binary mode
SetBinaryMode(true);
// Open file
FileStream fileStream = new FileStream(localFilename, FileMode.Open);
// Open data socket
Socket socket = this.CreateDataSocket();
// Send command store
FtpReply reply = SendCommand(FtpCommands.STOR(remoteFilename));
// Raise exception when wrong reply
if (reply.ReplyCode != FtpReplyCode.FileStatusOk && reply.ReplyCode != FtpReplyCode.DataConnectionAlreadyOpenTransferStarting)
{
throw new FtpException(reply);
}
// Send data
int size;
while ((size = fileStream.Read(this.buffer, 0, this.buffer.Length)) > 0)
{
socket.Send(this.buffer, size, SocketFlags.None);
}
// Close file
fileStream.Close();
// Close data socket
if (socket.Connected)
{
socket.Close();
}
// Read end of transfer message
reply = ReadReply();
// Raise exception when wrong reply
if (reply.ReplyCode != FtpReplyCode.ClosingDataConnection && reply.ReplyCode != FtpReplyCode.RequestedFileActionCompleted)
{
throw new FtpException(reply);
}
}
public void Open()
{
ConnectionStatus = FtpConnectionStatus.Connecting;
client_socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
IPEndPoint remoteEP;
try
{
remoteEP = new IPEndPoint(Dns.GetHostEntry(RemoteHost).AddressList[0], remotePort);
}
catch (SocketException ex)
{
ConnectionStatus = FtpConnectionStatus.NotConnected;
Connected = false;
throw new Exception("Can't translate domain name to IP adress", ex);
}
try
{
this.client_socket.Connect(remoteEP);
}
catch (Exception ex)
{
ConnectionStatus = FtpConnectionStatus.NotConnected;
Connected = false;
throw new Exception("Can't connect to remote server", ex);
}
FtpReply reply = null;
try
{
reply = ReadReply();
}
catch (Exception ex)
{
Close();
throw new FtpException(FtpReplyCode.OK, reply.Reply, ex);
}
if (reply.ReplyCode != FtpReplyCode.ServiceReadyForNewUser)
{
Close();
throw new FtpException(reply);
}
ConnectionStatus = FtpConnectionStatus.LogingIn;
reply = SendCommand(FtpCommands.USER(this.remoteUserName));
if (reply.ReplyCode != FtpReplyCode.NeedPassword && reply.ReplyCode != FtpReplyCode.UserLoggedIn)
{
Close();
throw new FtpException(reply);
}
if (reply.ReplyCode != FtpReplyCode.UserLoggedIn)
{
reply = SendCommand(FtpCommands.PASS(this.remotePassword));
if (reply.ReplyCode != FtpReplyCode.UserLoggedIn && reply.ReplyCode != FtpReplyCode.CommandNotImplementedSuperfluousAtThisSite)
{
Close();
throw new FtpException(reply);
}
}
Connected = true;
ConnectionStatus = FtpConnectionStatus.Busy;
SendCommand(FtpCommands.CWD(this.remotePath));
ConnectionStatus = FtpConnectionStatus.Ready;
ConnectionOpened(this, new EventArgs());
}
