/// <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);
}
public static Tuple <int, int, List <ShowItemBase>, TelnetLogList> GetAndProcessStream(
TcpClient Client, NetworkStream NetStream,
NetworkStreamBackedInputByteArray InputArray,
NegotiateSettings NegotiateSettings,
bool ForceRead = false)
{
int sendStmtCx = 0;
int getStmtCx = 0;
var logList = new TelnetLogList();
var showItemList = new ShowItemList();
bool exitLoop = false;
while (exitLoop == false)
{
// read available bytes from input stream.
if (InputArray.IsEof())
{
var log = InputArray.ReadFromNetworkStream(5, 5, ForceRead);
logList.AddItems(log);
}
// no input data to process.
if (InputArray.IsEof())
{
break;
}
DataStreamHeader currentDataStreamHeader = null;
while (true)
{
if (InputArray.IsEof() == true)
{
break;
}
// process the input as 5250 data stream commands.
if (currentDataStreamHeader != null)
{
var rv = ParseAndProcessWorkstationCommand(InputArray, currentDataStreamHeader);
var workstationCommand = rv.Item1;
showItemList = rv.Item2;
currentDataStreamHeader = rv.Item3;
logList.AddItems(rv.Item4);
continue;
}
// peek and process input bytes as a telnet stmt. ( starts with IAC )
var telCmd = InputArray.NextTelnetCommand();
if (telCmd != null)
{
getStmtCx += 1;
var rv = TelnetConnection.ProcessTelnetCommand(telCmd, NegotiateSettings);
var cx = rv.Item1;
var writeBytes = rv.Item2;
logList.AddItems(rv.Item3);
sendStmtCx += cx;
WriteToHost(logList, writeBytes, NetStream);
continue;
}
var dsh = new DataStreamHeader(InputArray);
if ((dsh != null) && (dsh.Errmsg == null))
{
logList.AddItem(Direction.Read, dsh.ToString());
currentDataStreamHeader = dsh;
continue;
}
exitLoop = true;
break;
}
}
return(new Tuple <int, int, List <ShowItemBase>, TelnetLogList>(
getStmtCx, sendStmtCx, showItemList, logList));
}
