/// <summary>
/// Creates a new instance of FTPUser
/// </summary>
/// <param name="name">The name of the user</param>
/// <param name="pass">The desired password for the user</param>
public FTPUser(string name, string pass)
{
Permissions = new FTPUserPermission();
Name = name;
Startupdir = "/";
SHA1Password = HelperFunctions.SHA1Hash(pass);
}
void CommandReceived(IAsyncResult arg)
{
_activecommand = false;
int CommandSize = 0;
try { CommandSize = _clientSocket.EndReceive(arg); }
catch { }
if (CommandSize == 0)
{
Disconnect();
//return;
}
// Wait for the next command to be sent by the client
try
{
_clientSocket.BeginReceive(_portBuffer, 0, _portBuffer.Length, SocketFlags.None, new AsyncCallback(CommandReceived), null);
}
catch
{
Disconnect();
return;
}
_lastcmdtime = DateTime.Now;
string CommandText;
if (_utf8)
{
CommandText = Encoding.UTF8.GetString(_portBuffer, 0, CommandSize).TrimStart(' ');
}
else
{
CommandText = Encoding.ASCII.GetString(_portBuffer, 0, CommandSize).TrimStart(' ');
}
string CmdArguments = null, Command = null;
int End = 0;
if ((End = CommandText.IndexOf(' ')) == -1)
{
End = (CommandText = CommandText.Trim()).Length;
}
else
{
CmdArguments = CommandText.Substring(End).TrimStart(' ');
}
Command = CommandText.Substring(0, End).ToUpper();
if (CmdArguments != null && CmdArguments.EndsWith("\r\n"))
{
CmdArguments = CmdArguments.Substring(0, CmdArguments.Length - 2);
}
bool CommandExecued = false;
switch (Command)
{
case "USER":
_activecommand = true;
if (CmdArguments != null && CmdArguments.Length > 0)
{
SendMessage("331 Password required!");
_connuser = CmdArguments;
}
CommandExecued = true;
break;
case "PASS":
_activecommand = true;
if (_connuser == "")
{
SendMessage("503 Invalid User Name");
return;
}
if (_server.Users[_connuser] != null)
{
if (_server.Users[_connuser].SHA1Password == HelperFunctions.SHA1Hash(CmdArguments))
{
_isAuthenticated = true;
_currentDir = "/";
_currentperms = _server.Users.GetPermissions(_connuser);
if (string.IsNullOrEmpty(_server.Users[_connuser].Startupdir) || _server.Users[_connuser].Startupdir == "/")
{
_localpath = _server.StartupDir;
}
else
{
_localpath = _server.Users[_connuser].Startupdir;
}
_server.Call_Log(new FTPLogEventArgs(FTPLogEventType.UserConnect, _connuser, true, 230, "none"));
SendMessage("230 Authentication Successful");
}
else
{
SendMessage("530 Authentication Failed!");
_server.Call_Log(new FTPLogEventArgs(FTPLogEventType.UserConnect, _connuser, false, 530, "none"));
}
}
else
{
SendMessage("530 Authentication Failed!");
_server.Call_Log(new FTPLogEventArgs(FTPLogEventType.UserConnect, _connuser, false, 530, "none"));
}
CommandExecued = true;
break;
}
if (!CommandExecued)
{
if (!_isAuthenticated)
{
SendMessage("530 Access Denied! Authenticate first");
return;
}
switch (Command.ToUpper())
{
case "CWD":
_activecommand = true;
CWD(CmdArguments);
break;
case "CDUP":
_activecommand = true;
string[] pathParts = _currentDir.Split('/');
if (pathParts.Length > 1)
{
_currentDir = "";
for (int i = 0; i < (pathParts.Length - 2); i++)
{
_currentDir += pathParts[i] + "/";
}
if (_currentDir.Length == 0)
{
_currentDir = "/";
}
}
SendMessage("250 CDUP command successful.");
break;
case "QUIT":
_activecommand = true;
SendMessage("221 FTP server signing off");
Disconnect();
break;
case "PWD":
_activecommand = true;
SendMessage("257 \"" + _currentDir + "\"");
break;
case "PORT":
_activecommand = true;
PORT(CmdArguments); //done
break;
case "PASV":
_activecommand = true;
PASV(CmdArguments); //done
break;
case "TYPE":
_activecommand = true;
TYPE(CmdArguments); //done
break;
case "SYST":
_activecommand = true;
SendMessage("215 Windows_NT");
break;
case "NOOP":
_activecommand = true;
SendMessage("200 OK");
break;
case "RETR":
_activecommand = true;
RETR(CmdArguments);
break;
case "STOR":
_activecommand = true;
STOR(CmdArguments, false);
break;
case "APPE":
_activecommand = true;
APPE(CmdArguments);
break;
case "RNFR":
_activecommand = true;
RNFR(CmdArguments);
break;
case "RNTO":
_activecommand = true;
RNTO(CmdArguments);
break;
case "DELE":
_activecommand = true;
DELE(CmdArguments);
break;
case "RMD":
_activecommand = true;
RMD(CmdArguments);
break;
case "MKD":
_activecommand = true;
MKD(CmdArguments);
break;
case "LIST":
_activecommand = true;
LIST(_currentDir);
break;
case "NLST":
_activecommand = true;
NLST(CmdArguments);
break;
/*case "CLNT":
* break;*/
case "MDTM":
_activecommand = true;
MDTM(CmdArguments);
break;
case "SIZE":
_activecommand = true;
SIZE(CmdArguments);
break;
case "OPTS":
_activecommand = true;
OPTS(CmdArguments);
break;
case "REIN":
_activecommand = true;
REIN(CmdArguments);
break;
case "STOU":
_activecommand = true;
STOR(CmdArguments, true);
break;
case "ABOR":
case "SHUTDOWN":
if (_datasocket != null && _datasocket.Connected)
{
_datasocket.Close();
}
_datasocket = null;
GC.Collect();
SendMessage("200 Data transfer aborted");
_server.Call_Log(new FTPLogEventArgs(FTPLogEventType.Abort, _connuser, true, 200));
break;
case "FEAT":
SendMessage(" SIZE");
SendMessage(" MTDM");
SendMessage("211 Feature list end");
_server.Call_Log(new FTPLogEventArgs(FTPLogEventType.FeatureList, _connuser, true, 211));
break;
default:
SendMessage("500 Unknown Command.");
_server.Call_Log(new FTPLogEventArgs(FTPLogEventType.UnknownCommand, _connuser, true, 500, Command, CmdArguments));
break;
// case "STAT":
// break;
// case "HELP":
// break;
// case "REST":
// break;
}
}
}
/// <summary>
/// Creates a new instance of FTPUser
/// </summary>
public FTPUser()
{
Permissions = new FTPUserPermission();
Startupdir = "/";
}