/// <summary>
/// コピーコンストラクタ
/// </summary>
/// <param name="info"></param>
public NegotiationInfomation(NegotiationInfomation info)
{
this.IAC = info.IAC;
this.Command = info.Command;
this.Option = info.Option;
this.Stream = info.Stream;
}
void EndSequence(TelnetOption option)
{
try
{
if (option == TelnetOption.TerminalType)
{
if (!Properties.ContainsKey("TerminalType"))
Properties["TerminalType"] = string.Empty;
var name = Properties["TerminalType"] as string ?? string.Empty;
if (name.Length > 0)
name += " ";
name += Encoding.ASCII.GetString(_sequence.ToArray());
Properties["TerminalType"] = name;
}
if (option == TelnetOption.WindowSize)
{
Properties["Width"] = (short)_sequence[0];
Properties["Height"] = (short)_sequence[1];
}
}
catch (Exception ex)
{
_logger.LogError(ex.ToString());
}
_sequence.Clear();
_telnetCommand = null;
}
public static Tuple <int, byte[], TelnetLogList> ProcessTelnetCommand(
TelnetCommand TelnetCmd, NegotiateSettings NegotiateSettings,
bool doLog = false)
{
TelnetLogList logList = null;
if (doLog == true)
{
logList = new TelnetLogList();
}
int cx = 0;
var writeStream = new ByteArrayBuilder();
// write to the run log.
if (logList != null)
{
logList.AddItem(Direction.Read, TelnetCmd.ToString());
}
if (TelnetCmd.CmdCode == Enums.CommandCode.DO)
{
var replyStmt = TelnetCmd.BuildReply(NegotiateSettings);
writeStream.Append(replyStmt.ToBytes());
}
else if (TelnetCmd is NewEnvironCommand)
{
var envStmt = TelnetCmd as NewEnvironCommand;
cx = ProcessNewEnvironStatement(envStmt, writeStream, NegotiateSettings);
}
else if (TelnetCmd is TerminalTypeCommand)
{
var ttStmt = TelnetCmd as TerminalTypeCommand;
cx = ProcessTerminalTypeStatement(ttStmt, writeStream, NegotiateSettings);
}
else if ((TelnetCmd is EndOfRecordStatement) || (TelnetCmd is TransmitBinaryCommand))
{
if (TelnetCmd.CmdCode == Enums.CommandCode.DO)
{
var replyStmt = TelnetCmd.BuildReply(NegotiateSettings);
writeStream.Append(replyStmt.ToBytes());
if ((replyStmt.CmdCode == Enums.CommandCode.DO) &&
(replyStmt.Subject.IsEqual(TelnetSubject.TRANSMIT_BINARY)))
{
}
}
else if (TelnetCmd.CmdCode == Enums.CommandCode.WILL)
{
var replyStmt = TelnetCmd.BuildDoReply();
writeStream.Append(replyStmt.ToBytes());
}
}
return(new Tuple <int, byte[], TelnetLogList>(cx, writeStream.ToByteArray(), logList));
}
/// <summary>
/// 応答送信
/// </summary>
/// <param name="command"></param>
/// <param name="option"></param>
private MemoryStream SendBack(TelnetCommand command, TelnetOption option)
{
// 送信メモリオブジェクト生成
MemoryStream sendStream = new MemoryStream();
sendStream.WriteByte((byte)TelnetCommand.IAC);
sendStream.WriteByte((byte)command);
sendStream.WriteByte((byte)option);
return(sendStream);
}
public byte Receive()
{
byte In = ReceiveRaw();
if (IsCtrlChar(In) && In == 255)
{
TelnetCommand Cmd = (TelnetCommand)ReceiveRaw();
TelnetCommand Option = (TelnetCommand)ReceiveRaw();
bool Unimplemented = false;
if (Cmd == TelnetCommand.IAC && Option == TelnetCommand.IAC)
{
throw new Exception("Invalid control code");
}
if (Option == TelnetCommand.SuppressGoAhead)
{
Send(TelnetCommand.IAC, TelnetCommand.WILL, TelnetCommand.SuppressGoAhead);
}
else if (Option == TelnetCommand.Echo)
{
if (Cmd == TelnetCommand.DO)
{
Echo = true;
}
else if (Cmd == TelnetCommand.DONT)
{
Echo = false;
}
else
{
Unimplemented = true;
}
Send(TelnetCommand.IAC, Echo ? TelnetCommand.WILL : TelnetCommand.WONT, TelnetCommand.Echo);
}
else
{
Unimplemented = true;
}
if (Unimplemented)
{
Console.WriteLine("Unsupported: IAC {0} {1}", Cmd, Option);
}
return(Receive());
}
if (In == 127)
{
In = (byte)'\b';
}
return(In);
}
private void SendIAC(TelnetCommand command, byte option)
{
if (Connected)
{
if (!_TelnetOptions[option])
{
_TelnetOptions[option] = true;
base.WriteRaw(new byte[] { (byte)TelnetCommand.IAC, (byte)command, option });
}
}
}
public static TelnetCommand AsNegative(this TelnetCommand command)
{
if (!command.IsPositive())
{
return(command);
}
else
{
return(command.Negate());
}
}
public async Task Handle(TelnetCommand command, TelnetOption option, ITelnetChannel channel)
{
TelnetCommand response = command.Reciprocal().AsNegative();
//if (option == TelnetOption.SuppressGoAhead && command.IsPositive())
//{
// response = response.AsPositive();
//}
await channel.SendCommandAsync(response, option);
}
public static bool IsImperative(this TelnetCommand command)
{
switch (command)
{
case TelnetCommand.DO:
case TelnetCommand.DONT:
return(true);
default:
return(false);
}
}
public static bool IsPositive(this TelnetCommand command)
{
switch (command)
{
case TelnetCommand.WILL:
case TelnetCommand.DO:
return(true);
default:
return(false);
}
}
/// <summary>
/// 応答送信
/// </summary>
/// <param name="command"></param>
/// <param name="option"></param>
private void SendBack(TelnetCommand command, TelnetOption option)
{
// 送信メモリオブジェクト生成
MemoryStream sendStream = new MemoryStream();
sendStream.WriteByte((byte)TelnetCommand.IAC);
sendStream.WriteByte((byte)command);
sendStream.WriteByte((byte)option);
// 送信
this.Parse(sendStream.ToArray());
this.Send(sendStream);
}
private static int ProcessNewEnvironStatement(
NewEnvironCommand Stmt, ByteArrayBuilder WriteStream,
NegotiateSettings NegotiateSettings)
{
int sendStmtCx = 0;
// got the stmt with the SEND parm. Send back the NEW_ENVIRON stmt with the IS parm.
if ((Stmt.SubOption != null) &&
(Stmt.SubOption.Value == TelnetOptionParm.SEND))
{
var neSend =
new NewEnvironCommand(Enums.CommandCode.SB, TelnetOptionParm.IS);
foreach (var newEnv in NegotiateSettings.SendNewEnvironList)
{
var optnVar = newEnv.ToOptionVariable(NegotiateSettings.SbsValuesDict);
neSend.AddOptionVar(optnVar);
}
int xx = 25;
if (xx == 26)
{
neSend.AddOptionVar(EnvironVarCode.VAR, "USER", "SRICHTER");
neSend.AddOptionVar(EnvironVarCode.VAR, "DEVNAME", "STEVE25");
// reply to newEnviron IBMRSEED stmt SEND statement.
if (Stmt.ContainsUserVar_IBMRSEED() == true)
{
byte[] clientSeed = new byte[8] {
0x55, 0x56, 0x59, 0x5a, 0x5b, 0x5c, 0x4c, 0x48
};
string passWord = "******";
string userName = "******";
var serverSeed = Stmt.IBMRSEED_SeedValue();
var substitutionPassword =
CipherCommon.EncryptPassword(passWord, userName, serverSeed, clientSeed);
neSend.AddOptionVar(EnvironVarCode.USERVAR, "IBMRSEED", clientSeed);
neSend.AddOptionVar(EnvironVarCode.USERVAR, "IBMSUBSPW", substitutionPassword);
}
}
WriteStream.Append(neSend.ToBytes());
// send the SE command immed after NEW-ENVIRON
{
var ts = new TelnetCommand(Enums.CommandCode.SE);
WriteStream.Append(ts.ToBytes());
}
}
return(sendStmtCx);
}
public static bool IsNegotiation(this TelnetCommand command)
{
switch (command)
{
case TelnetCommand.WILL:
case TelnetCommand.WONT:
case TelnetCommand.DO:
case TelnetCommand.DONT:
return(true);
default:
return(false);
}
}
public static TelnetCommand Negate(this TelnetCommand command)
{
switch (command)
{
case TelnetCommand.WILL:
return(TelnetCommand.WONT);
case TelnetCommand.WONT:
return(TelnetCommand.WILL);
case TelnetCommand.DO:
return(TelnetCommand.DONT);
case TelnetCommand.DONT:
return(TelnetCommand.DO);
default:
return(command);
}
}
/// <summary>
/// Handles a Telnet command.
/// </summary>
/// <param name="e">Information about the data received.</param>
private void HandleCommand(SocketAsyncEventArgs e)
{
Connection c = e.UserToken as Connection;
if (c == null || e.BytesTransferred < 3)
{
return;
}
for (int i = 0; i < e.BytesTransferred; i += 3)
{
if (e.BytesTransferred - i < 3)
{
break;
}
if (e.Buffer[i] == (int)TelnetCommand.IAC)
{
TelnetCommand command = (TelnetCommand)e.Buffer[i + 1];
TelnetOption option = (TelnetOption)e.Buffer[i + 2];
switch (command)
{
case TelnetCommand.DO:
if (option == TelnetOption.Echo)
{
// ECHO
}
break;
case TelnetCommand.WILL:
if (option == TelnetOption.Echo)
{
// ECHO
}
break;
}
c.ReceiveBuffer.Remove(i, 3);
}
}
}
async Task ParseBytes(byte[] data)
{
using (var ms = new MemoryStream(data))
{
using (var reader = new BinaryReader(ms))
{
while (reader.BaseStream.Position < reader.BaseStream.Length)
{
var input = reader.ReadByte();
if (_telnetCommand != null)
{
if (_telnetCommand.Verb == null)
{
_telnetCommand.Verb = (TelnetVerb)input;
continue;
}
if (_telnetCommand.Option == null)
{
_telnetCommand.Option = (TelnetOption)input;
}
var verb = _telnetCommand.Verb.Value;
var option = _telnetCommand.Option.Value;
switch (verb)
{
case TelnetVerb.SB:
// Sub-negotiation
// Grab bytes until IAC|SE is reached.
if (input == (byte)option)
continue;
if (input == 0x0)
continue;
if (input == (byte)TelnetVerb.IAC)
continue;
if (input == (byte)TelnetVerb.SE)
{
EndSequence(option);
continue;
}
_sequence.Add(input);
break;
case TelnetVerb.SE:
// End of a sequence
EndSequence(option);
break;
case TelnetVerb.WILL:
switch (option)
{
case TelnetOption.TerminalType:
await SendRaw(new TelnetCommandBuilder()
.Add(TelnetVerb.DO, TelnetOption.TerminalType)
.AddSequence(TelnetOption.TerminalType, 1)
.Build());
break;
case TelnetOption.WindowSize:
await SendRaw(new TelnetCommandBuilder()
.Add(TelnetVerb.DO, TelnetOption.WindowSize)
.Build());
break;
default:
await SendRaw(new TelnetCommandBuilder()
.Add(TelnetVerb.DONT, option)
.Build());
break;
}
_telnetCommand = null;
break;
case TelnetVerb.WONT:
_telnetCommand = null;
break;
case TelnetVerb.DO:
switch (option)
{
case TelnetOption.SupressGoAhead:
await SendRaw(new TelnetCommandBuilder()
.Add(TelnetVerb.WILL, TelnetOption.SupressGoAhead)
.Build());
break;
default:
await SendRaw(new TelnetCommandBuilder()
.Add(TelnetVerb.WONT, option)
.Build());
break;
}
_telnetCommand = null;
break;
case TelnetVerb.DONT:
_telnetCommand = null;
break;
case TelnetVerb.IAC:
// Probably not a telnet command...
_buffer.Add(input);
_telnetCommand = null;
break;
default:
_telnetCommand = null;
break;
}
continue;
}
switch (input)
{
case (byte)TelnetVerb.IAC:
_telnetCommand = new TelnetCommand();
break;
case 0x7f: // Backspace
// Remove the last character entered.
_buffer.RemoveAt(_buffer.Count - 1);
break;
case 0x0A: // New Line \n
case 0x0D: // Carriage Return \r
await Context?.ProcessInput(Encoding.ASCII.GetString(_buffer.ToArray()));
_buffer.Clear();
return;
default:
_buffer.Add(input);
break;
}
}
}
}
}
/// <summary>
/// parse the 5250 data stream that is sent from the client to the server.
/// </summary>
/// <param name="LogFile"></param>
/// <param name="ToServerStream"></param>
/// <returns></returns>
public static Tuple <ResponseItemList, string> ParseResponseStream(
InputByteArray InputArray, ResponseHeader ResponseHeader = null)
{
var responseItemList = new ResponseItemList();
string errmsg = null;
var writeStream = new ByteArrayBuilder();
DataStreamHeader dsHeader = null;
ResponseHeader responseHeader = ResponseHeader;
// stream starts with data stream header.
if (responseHeader == null)
{
var rv = DataStreamHeader.Factory(InputArray);
dsHeader = rv.Item1;
responseItemList.Add(dsHeader);
errmsg = dsHeader.Errmsg;
// next is the response header.
if (errmsg == null)
{
responseHeader = new ResponseHeader(InputArray);
responseItemList.Add(responseHeader);
errmsg = responseHeader.Errmsg;
}
}
// look for 5250 query reply.
if ((errmsg == null) && (responseHeader.AidKey != null) &&
(responseHeader.AidKey.Value == AidKey.Query5250Reply))
{
var queryResp = new Query5250Response(InputArray);
if (queryResp.Errmsg == null)
{
responseItemList.Add(queryResp);
}
}
// repeating instances of sbaOrder, textDataOrder pairs.
while (true)
{
var telCmd = TelnetCommand.Factory(InputArray);
if (telCmd != null)
{
continue;
}
// check that an SBA order is starting. Leave loop when it is not.
if (SetBufferAddressOrder.CheckOrder(InputArray) != null)
{
break;
}
var orderPair = new LocatedTextDataOrderPair(InputArray);
if (orderPair.Errmsg != null)
{
break;
}
responseItemList.Add(orderPair);
}
return(new Tuple <ResponseItemList, string>(responseItemList, errmsg));
}
private void SendIAC(TelnetCommand command, byte option)
{
if (Connected)
{
if (!_TelnetOptions[option])
{
_TelnetOptions[option] = true;
base.WriteRaw(new byte[] { (byte)TelnetCommand.IAC, (byte)command, option });
}
}
}
private static void WriteToHost(
TelnetLogList LogList, TelnetCommand Stmt, NetworkStream NetStream)
{
WriteToHost(LogList, Stmt.ToBytes(), NetStream);
}
private void SendIAC(TelnetCommand command, TelnetOption option)
{
SendIAC(command, (byte)option);
}
private void SendIAC(TelnetCommand command, TelnetOption option)
{
SendIAC(command, (byte)option);
}
/// <summary>
/// write buffer contents to log file.
/// </summary>
/// <param name="Direction"></param>
/// <param name="Buffer"></param>
/// <param name="Length"></param>
public void Write(string Direction, byte[] Buffer, int Length)
{
var lines = new List <string>();
this.Counter += 1;
var inputArray = new InputByteArray(Buffer, Length);
while (inputArray.IsEof() == false)
{
// peek to see if the current byte is a telnet command.
var escapeCmd = inputArray.PeekNextByte().ToTelnetCommandCode();
// peek to see if the current bytes are an IBM5250 datastream header.
DataStreamHeader dsh = null;
string errmsg = null;
{
var rv = DataStreamHeader.Factory(inputArray);
dsh = rv.Item1;
errmsg = rv.Item2;
}
// current bytes are an ibm5250 datastream header. ( page 2-4 of rfc 1205 )
// store this header as the "current datastream header". When there is a
// current data stream header the code will match the current bytes against
// ibm5250 data stream commands.
if (errmsg == null)
{
lines.Add(
Direction + " " + this.Counter.ToString() + " "
+ dsh.ToString());
this.CurrentDataStreamHeader = dsh;
continue;
}
// currently in a 5250 data stream header.
if (this.CurrentDataStreamHeader != null)
{
var dataStreamCommand = WorkstationCommandBase.ParseFactory(inputArray);
if (dataStreamCommand != null)
{
lines.Add(
Direction + " " + this.Counter.ToString() + " "
+ dataStreamCommand.ToString());
// all the data stream command ToString methods provide enough info.
// But for the WriteToDisplayCommand, list out the ToString contents of
// the WtdOrders of that command.
if (dataStreamCommand is WriteToDisplayCommand)
{
var wtdCommand = dataStreamCommand as WriteToDisplayCommand;
foreach (var order in wtdCommand.OrderList)
{
lines.Add(order.ToString());
}
}
continue;
}
}
{
var stmt = TelnetCommand.Factory(inputArray);
if (stmt != null)
{
lines.Add(
Direction + " " + this.Counter.ToString() + " " + stmt.ToString());
continue;
}
}
if ((escapeCmd != null) && (escapeCmd.Value == CommandCode.ESCAPE))
{
var rv = TerminalVt100Statement.Factory(inputArray);
var vtStmt = rv.Item1;
var otStmt = rv.Item2;
lines.Add(
Direction + " " + this.Counter.ToString() + " " + vtStmt.ToString());
if (otStmt != null)
{
lines.Add(
Direction + " " + this.Counter.ToString() + " " + otStmt.ToString());
}
continue;
}
{
var remBytes = inputArray.GetBytesToEnd();
lines.Add(Direction + " " + this.Counter.ToString()
+ " Raw bytes follow:");
LogFile_WriteRawBytes(remBytes, lines);
}
}
WriteTextLines(lines);
}
private void ParseTelnetNegData()
{
byte[] negBuffer = tnNegCommands.ToArray();
tnNegCommands.Clear();
for (int i = 0; i < negBuffer.Length; i += 3)
{
if (negBuffer.Length - i < 3)
{
break;
}
if (negBuffer[i] == (int)TelnetCommand.IAC)
{
TelnetCommand command = (TelnetCommand)negBuffer[i + 1];
TelnetOption option = (TelnetOption)negBuffer[i + 2];
Console.WriteLine("CLIENT {0} {1}", command, option);
switch (command)
{
case TelnetCommand.WONT:
if (!ClientOptionNegociated((byte)option) || GetClientOption((byte)option))
{
server.Send(new byte[] { 255, (byte)TelnetCommand.DONT, (byte)option }, this);
}
Console.WriteLine("SERVER {0} {1}", TelnetCommand.DONT, option);
AddClientOption((byte)option, false);
this.sender.SendFailMessage(string.Format("Negotiating Client Option '{0}'", option), "OFF");
break;
case TelnetCommand.DONT:
if (!ServerOptionNegociated((byte)option) || GetServerOption((byte)option))
{
server.Send(new byte[] { 255, (byte)TelnetCommand.WONT, (byte)option }, this);
}
Console.WriteLine("SERVER {0} {1}", TelnetCommand.WONT, option);
AddServerOption((byte)option, false);
this.sender.SendFailMessage(string.Format("Negotiating Server Option '{0}'", option), "OFF");
if (option == TelnetOption.SuppressGoAhead)
{
//I WILL DISCONNECT ECHO ALSO!!!
server.Send(new byte[] {
(byte)TelnetCommand.IAC,
(byte)TelnetCommand.WONT,
(byte)TelnetOption.Echo
}, this);
AddServerOption((byte)TelnetOption.Echo, false);
this.sender.SendFailMessage(string.Format("Negotiating Server Option '{0}'", option), "OFF");
Console.WriteLine("SERVER {0} {1}", TelnetCommand.WONT, TelnetOption.Echo);
}
break;
case TelnetCommand.DO:
switch (option)
{
case TelnetOption.Echo:
if (!ServerOptionNegociated((byte)option) || !GetServerOption((byte)option))
{
server.Send(new byte[] {
(byte)TelnetCommand.IAC,
(byte)TelnetCommand.WILL,
(byte)TelnetOption.Echo
}, this);
}
Console.WriteLine("SERVER {0} {1}", TelnetCommand.WILL, TelnetOption.Echo);
AddServerOption((byte)option, true);
this.sender.SendSucessMessage(string.Format("Negotiating Server Option '{0}'", option), "ON");
break;
case TelnetOption.SuppressGoAhead:
if (!ServerOptionNegociated((byte)option) || !GetServerOption((byte)option))
{
server.Send(new byte[] {
(byte)TelnetCommand.IAC,
(byte)TelnetCommand.WILL,
(byte)TelnetOption.SuppressGoAhead
}, this);
}
Console.WriteLine("SERVER {0} {1}", TelnetCommand.WILL, TelnetOption.SuppressGoAhead);
AddServerOption((byte)option, true);
this.sender.SendSucessMessage(string.Format("Negotiating Server Option '{0}'", option), "ON");
break;
}
break;
case TelnetCommand.WILL:
switch (option)
{
case TelnetOption.SuppressGoAhead:
server.Send(new byte[] {
(byte)TelnetCommand.IAC,
(byte)TelnetCommand.DO,
(byte)TelnetOption.SuppressGoAhead
}, this);
Console.WriteLine("SERVER {0} {1}", TelnetCommand.DO, TelnetOption.SuppressGoAhead);
AddClientOption((byte)option, true);
this.sender.SendSucessMessage(string.Format("Negotiating Client Option '{0}'", option), "ON");
break;
case TelnetOption.Echo:
server.Send(new byte[] {
(byte)TelnetCommand.IAC,
(byte)TelnetCommand.DO,
(byte)TelnetOption.Echo
}, this);
Console.WriteLine("SERVER {0} {1}", TelnetCommand.DO, TelnetOption.Echo);
AddClientOption((byte)option, true);
this.sender.SendSucessMessage(string.Format("Negotiating Client Option '{0}'", option), "ON");
break;
case TelnetOption.WindowSize:
server.Send(new byte[] {
(byte)TelnetCommand.IAC,
(byte)TelnetCommand.DO,
(byte)TelnetOption.WindowSize
}, this);
Console.WriteLine("SERVER {0} {1}", TelnetCommand.DO, TelnetOption.WindowSize);
AddClientOption((byte)option, true);
this.sender.SendSucessMessage(string.Format("Negotiating Client Option '{0}'", option), "ON");
//server.Send(new byte[] {
// (byte)TelnetCommand.IAC,
// (byte)TelnetCommand.DO,
// (byte)TelnetOption.DataEntryTerminal}, this);
//Console.WriteLine("SERVER {0} {1}", TelnetCommand.DO, TelnetOption.DataEntryTerminal);
break;
case TelnetOption.TerminalType:
server.Send(new byte[] {
(byte)TelnetCommand.IAC,
(byte)TelnetCommand.SB,
(byte)TelnetOption.TerminalType, 0x1,
(byte)TelnetCommand.IAC,
(byte)TelnetCommand.SE
}, this);
Console.WriteLine("SERVER {0} {1}", TelnetCommand.SB, TelnetOption.TerminalType);
AddClientOption((byte)option, true);
this.sender.SendSucessMessage(string.Format("Negotiating Client Option '{0}'", option), "ON");
break;
case TelnetOption.Charset:
server.Send(new byte[] {
(byte)TelnetCommand.IAC,
(byte)TelnetCommand.SB,
(byte)TelnetOption.Charset, 0x1,
(byte)'U', (byte)'T', (byte)'F', (byte)'-', (byte)'8',
(byte)TelnetCommand.IAC,
(byte)TelnetCommand.SE
}, this);
Console.WriteLine("SERVER {0} {1}", TelnetCommand.SB, TelnetOption.TerminalType);
AddClientOption((byte)option, true);
this.sender.SendSucessMessage(string.Format("Negotiating Client Option '{0}'", option), "ON");
break;
}
break;
case TelnetCommand.SB:
switch (option)
{
case TelnetOption.WindowSize:
int w = negBuffer[i + 3] << 4 | negBuffer[i + 4];
int h = negBuffer[i + 5] << 4 | negBuffer[i + 6];
this.terminalHeight = h;
this.terminalWidth = w;
Console.WriteLine("Window Size: {0} {1}", w, h);
i = i + 6;
if (this.player == null || this.player.PlayerState != ioPlayer.PlayerStateEnum.WaitingForCommand)
{
this.sender.SendMessage(string.Format("Got Terminal Size: '{0}x{1}'", w, h));
}
break;
case TelnetOption.TerminalType:
byte Opt = negBuffer[i + 3];
List <byte> tType = new List <byte>();
bool isValid = false;
for (int ct = i + 4; ct < negBuffer.Length; ct++)
{
i = ct;
if (negBuffer[ct] == (byte)TelnetCommand.IAC &&
ct + 1 < negBuffer.Length &&
negBuffer[ct + 1] == (byte)TelnetCommand.SE)
{
isValid = true;
break;
}
else
{
tType.Add(negBuffer[ct]);
}
}
string tt = Encoding.UTF8.GetString(
Encoding.Convert(encoding, Encoding.UTF8, tType.ToArray())).ToUpper();
if (isValid)
{
if (!terminalTypes.Contains(tt))
{
terminalTypes.Add(tt);
terminalType = tt;
VerifyTerminalType();
Console.WriteLine("Got known terminal type: {0}", tt);
if (this.player == null || this.player.PlayerState != ioPlayer.PlayerStateEnum.WaitingForCommand)
{
this.sender.SendSucessMessage("Got known terminal type", tt);
}
}
else
{
VerifyTerminalType();
Console.WriteLine("Got unknown Terminal type: {0}", tt);
if (this.player == null || this.player.PlayerState != ioPlayer.PlayerStateEnum.WaitingForCommand)
{
this.sender.SendFailMessage("Got unknown terminal type", tt);
}
}
}
else
{
Console.WriteLine("Terminal type: {0}", tt);
Console.WriteLine("WTF!!!!");
if (this.player == null || this.player.PlayerState != ioPlayer.PlayerStateEnum.WaitingForCommand)
{
this.sender.SendFailMessage("Unable to decode terminal type", tt);
}
}
break;
case TelnetOption.Charset:
Console.WriteLine("Charset");
break;
}
break;
}
}
}
//Console.WriteLine("----------------");
}