public static void Cmd_APPE(Object sender, CommandEventArgs e)
{
FtpSession lSession = (FtpSession)e.Session;
if (lSession.State == FtpState.LoggedIn)
{
if ((e.AllParameters.Length == 0) || (!ValidFilename(e.AllParameters)))
{
e.Connection.WriteLine("501 Syntax error in parameters or arguments.");
return;
}
String lNewDir = e.AllParameters;
if (lNewDir.StartsWith("/"))
{
lNewDir = ValidateDirectory(lNewDir);
}
else
{
String lTemp = lSession.Directory;
if (!lTemp.EndsWith("/"))
lTemp = lTemp + "/";
lNewDir = ValidateDirectory(lTemp + lNewDir);
}
FtpTransferEventArgs lArgs = new FtpTransferEventArgs(e.Session, e.Connection, e.Server);
lArgs.FileName = lNewDir;
lArgs.Append = true;
lArgs.RestartPoint = 0;
lSession.RestartPoint = 0;
try
{
((FtpServer)lArgs.Server).InvokeOnCanStoreFile(lArgs);
}
catch (FtpException ex)
{
lArgs.Connection.WriteLine(ex.ToString());
return;
}
catch
{
lArgs.Connection.WriteLine("500 Internal Error");
return;
}
if (lArgs.Ok)
{
if (lSession.Passive)
e.Connection.WriteLine("125 Data connection already open; transfer starting");
if (!ValidateConnection(lSession))
{
e.Connection.WriteLine("425 Unable to build data connection");
return;
}
if (!lSession.Passive)
e.Connection.WriteLine("150 Opening data connection");
}
else
{
lArgs.Connection.WriteLine("550 Permission Denied");
return;
}
lSession.State = FtpState.Transfer;
if (lSession.TransferThread != null)
{
lSession.TransferThread.Abort();
lSession.TransferThread = null;
}
lSession.TransferThread = new FtpTransferThread(lArgs, true);
}
else
{
e.Connection.WriteLine("503 Bad sequence of commands.");
}
}
internal protected virtual void InvokeOnCanRetrieveFile(FtpTransferEventArgs e)
{
if (this.OnCanRetrieveFile != null)
this.OnCanRetrieveFile(this, e);
}
public FtpTransferThread(FtpTransferEventArgs e, Boolean store)
{
this.fEventArgs = e;
this.fStore = store;
new Thread(new ThreadStart(Execute)).Start();
}
protected override void InvokeOnRetrieveFile(FtpTransferEventArgs ea)
{
VirtualFtpSession lSession = (VirtualFtpSession)ea.Session;
IFtpFolder lFolder;
string lFilename;
lSession.CurrentFolder.FindBaseFolderForFilename(ea.FileName, out lFolder, out lFilename, lSession);
IFtpFile lFile = lFolder.GetFile(lFilename, lSession);
lFile.GetFile(ea.DataChannel);
ea.Ok = true;
}
protected override void InvokeOnCanRetrieveFile(FtpTransferEventArgs ea)
{
VirtualFtpSession lSession = (VirtualFtpSession)ea.Session;
IFtpFolder lFolder;
string lFilename;
lSession.CurrentFolder.FindBaseFolderForFilename(ea.FileName, out lFolder, out lFilename, lSession);
IFtpFile lFile = lFolder.GetFile(lFilename, lSession);
ea.Ok = (lFile != null && lFile.AllowRead(lSession));
}
protected override void InvokeOnCanStoreFile(FtpTransferEventArgs ea)
{
VirtualFtpSession lSession = (VirtualFtpSession)ea.Session;
IFtpFolder lFolder;
string lFilename;
lSession.CurrentFolder.FindBaseFolderForFilename(ea.FileName, out lFolder, out lFilename, lSession);
ea.Ok = lFolder.AllowPut(lSession);
}
