public async Task DownloadFileAsync(System.IO.Stream LocalFileStream, String RemoteFilename)
{
if (!IsBusy)
{
ftpFileInfo = null;
IsBusy = true;
ftpFileInfo = new FtpFileOperationInfo(LocalFileStream, RemoteFilename, false);
ftpCommand = FtpCommand.Type;
logger.AddLog("FTPClient -> TYPE I\r\n");
await FtpCommandSocket.SendDataAsync("TYPE I\r\n");
}
}
public async Task GetDirectoryListingAsync()
{
if (!IsBusy)
{
fileListingData = null;
ftpFileInfo = null;
IsBusy = true;
ftpCommand = FtpCommand.Passive;
logger.AddLog("FTPClient -> PASV\r\n");
await FtpCommandSocket.SendDataAsync("PASV\r\n");
}
}
async void FtpClientSocket_DataReceived(object sender, DataReceivedEventArgs e)
{
String Response = System.Text.Encoding.UTF8.GetString(e.GetData(), 0, e.GetData().Length);
Response = Response.Trim();
logger.AddLog(String.Format("FTPServer -> {0}", Response));
switch (ftpPassiveOperation)
{
case FtpPassiveOperation.FileDownload:
ftpCommand = FtpCommand.None;
if (Response.StartsWith("150") || Response.StartsWith("125"))
{
IsBusy = true;
DataReader dataReader = new DataReader(FtpDataChannel.InputStream);
dataReader.InputStreamOptions = InputStreamOptions.Partial;
while (!(await dataReader.LoadAsync(32768)).Equals(0))
{
IBuffer databuffer = dataReader.DetachBuffer();
RaiseFtpFileTransferProgressedEvent(databuffer.Length, false);
await ftpFileInfo.LocalFileStream.WriteAsync(databuffer.ToArray(), 0, Convert.ToInt32(databuffer.Length));
}
await ftpFileInfo.LocalFileStream.FlushAsync();
dataReader.Dispose();
dataReader = null;
//FtpDataChannel.Dispose();
//FtpDataChannel = null;
RaiseFtpFileDownloadSucceededEvent(ftpFileInfo.LocalFileStream, ftpFileInfo.RemoteFile);
}
else if (Response.StartsWith("226"))
{
IsBusy = false;
ftpPassiveOperation = FtpPassiveOperation.None;
}
else
{
IsBusy = false;
ftpPassiveOperation = FtpPassiveOperation.None;
RaiseFtpFileDownloadFailedEvent(ftpFileInfo.LocalFileStream, ftpFileInfo.RemoteFile, FtpFileTransferFailureReason.FileDoesNotExist);
}
break;
case FtpPassiveOperation.FileUpload:
ftpCommand = FtpCommand.None;
if (Response.StartsWith("150") || Response.StartsWith("125"))
{
IsBusy = true;
DataWriter dataWriter = new DataWriter(FtpDataChannel.OutputStream);
byte[] data = new byte[32768];
while (!(await ftpFileInfo.LocalFileStream.ReadAsync(data, 0, data.Length)).Equals(0))
{
dataWriter.WriteBytes(data);
await dataWriter.StoreAsync();
RaiseFtpFileTransferProgressedEvent(Convert.ToUInt32(data.Length), true);
}
await dataWriter.FlushAsync();
dataWriter.Dispose();
dataWriter = null;
FtpDataChannel.Dispose();
FtpDataChannel = null;
}
else if (Response.StartsWith("226"))
{
IsBusy = false;
ftpPassiveOperation = FtpPassiveOperation.None;
RaiseFtpFileUploadSucceededEvent(ftpFileInfo.LocalFileStream, ftpFileInfo.RemoteFile);
ftpFileInfo = null;
}
else
{
IsBusy = false;
ftpPassiveOperation = FtpPassiveOperation.None;
RaiseFtpFileUploadFailedEvent(ftpFileInfo.LocalFileStream, ftpFileInfo.RemoteFile, FtpFileTransferFailureReason.FileDoesNotExist);
ftpFileInfo = null;
}
break;
case FtpPassiveOperation.ListDirectory:
ftpCommand = FtpCommand.None;
if (Response.StartsWith("150") || Response.StartsWith("125"))
{
IsBusy = true;
DataReader dataReader = new DataReader(FtpDataChannel.InputStream);
dataReader.InputStreamOptions = InputStreamOptions.Partial;
fileListingData = new List <byte>();
while (!(await dataReader.LoadAsync(1024)).Equals(0))
{
fileListingData.AddRange(dataReader.DetachBuffer().ToArray());
}
dataReader.Dispose();
dataReader = null;
FtpDataChannel.Dispose();
FtpDataChannel = null;
Gb2312Encoding encoding = new Gb2312Encoding();
String listingData = encoding.GetString(fileListingData.ToArray(), 0, fileListingData.ToArray().Length);
String[] listings = listingData.Split(new char[] { '\r', '\n' }, StringSplitOptions.RemoveEmptyEntries);
List <String> Filenames = new List <String>();
List <String> Directories = new List <String>();
foreach (String listing in listings)
{
if (listing.StartsWith("drwx") || listing.Contains("<DIR>"))
{
Directories.Add(listing.Split(new char[] { ' ' }).Last());
}
else
{
Filenames.Add(listing.Split(new char[] { ' ' }).Last());
}
}
RaiseFtpDirectoryListedEvent(Directories.ToArray(), Filenames.ToArray());
}
else if (Response.StartsWith("226"))
{
IsBusy = false;
ftpFileInfo = null;
ftpPassiveOperation = FtpPassiveOperation.None;
}
else
{
IsBusy = false;
ftpFileInfo = null;
ftpPassiveOperation = FtpPassiveOperation.None;
}
break;
case FtpPassiveOperation.None:
switch (ftpCommand)
{
case FtpCommand.Username:
if (Response.StartsWith("501"))
{
IsBusy = false;
RaiseFtpAuthenticationFailedEvent();
break;
}
this.ftpCommand = FtpCommand.Password;
logger.AddLog(String.Format("FTPClient -> PASS {0}\r\n", this.Password));
await FtpCommandSocket.SendDataAsync(String.Format("PASS {0}\r\n", this.Password));
break;
case FtpCommand.Password:
this.ftpCommand = FtpCommand.None;
IsBusy = false;
if (Response.Contains("530"))
{
RaiseFtpAuthenticationFailedEvent();
}
else
{
RaiseFtpAuthenticationSucceededEvent();
}
break;
case FtpCommand.ChangeWorkingDirectory:
IsBusy = false;
if (Response.StartsWith("550"))
{
RaiseFtpDirectoryChangedFailedEvent(this.RemoteDirectory);
}
else
{
RaiseFtpDirectoryChangedSuccededEvent(this.RemoteDirectory);
}
break;
case FtpCommand.PresentWorkingDirectory:
if (Response.StartsWith("257"))
{
IsBusy = false;
RaiseFtpPresentWorkingDirectoryReceivedEvent(Response.Split(new Char[] { ' ', '"' }, StringSplitOptions.RemoveEmptyEntries)[1]);
}
break;
case FtpCommand.Type:
ftpCommand = FtpCommand.Passive;
logger.AddLog("FTPClient -> PASV\r\n");
await FtpCommandSocket.SendDataAsync("PASV\r\n");
break;
case FtpCommand.Passive:
if (Response.StartsWith("227"))
{
await PrepareDataChannelAsync(Response);
if (ftpFileInfo != null)
{
if (ftpFileInfo.IsUpload)
{
ftpPassiveOperation = FtpPassiveOperation.FileUpload;
logger.AddLog(String.Format("FTPClient -> STOR {0}\r\n", ftpFileInfo.RemoteFile));
await FtpCommandSocket.SendDataAsync(String.Format("STOR {0}\r\n", ftpFileInfo.RemoteFile));
}
else
{
ftpPassiveOperation = FtpPassiveOperation.FileDownload;
logger.AddLog(String.Format("FTPClient -> RETR {0}\r\n", ftpFileInfo.RemoteFile));
await FtpCommandSocket.SendDataAsync(String.Format("RETR {0}\r\n", ftpFileInfo.RemoteFile));
}
}
else
{
fileListingData = new List <byte>();
ftpPassiveOperation = FtpPassiveOperation.ListDirectory;
logger.AddLog("FTPClient -> LIST\r\n");
await FtpCommandSocket.SendDataAsync("LIST\r\n");
}
}
break;
case FtpCommand.Logout:
ftpCommand = FtpCommand.None;
break;
case FtpCommand.None:
break;
}
break;
}
}