public static Tuple <List <ShowItemBase>, TelnetLogList> NextServerRequest(
NetworkStreamBackedInputByteArray InputArray,
NegotiateSettings NegotiateSettings,
bool ForceRead = false)
{
TelnetLogList logList = new TelnetLogList();
var showItemList = new ShowItemList();
while (true)
{
// 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;
}
var buf = InputArray.PeekDataStreamHeader();
if (buf != null)
{
var dsh = new DataStreamHeader(InputArray);
logList.AddItems(Direction.Read, dsh.ToReportLines( ), true);
var rv = ParseAndProcessWorkstationCommand(InputArray, dsh);
var workstationCommand = rv.Item1;
showItemList = rv.Item2;
logList.AddItems(rv.Item4);
}
// check for IAC EOR
{
var telCode = InputArray.PeekTelnetCommandCode(CommandCode.EOR);
if (telCode != null)
{
var telCmd = InputArray.NextTelnetCommand();
logList.AddItems(Direction.Read, telCmd.ToReportLines(), true);
}
}
// peek and process input bytes as a telnet stmt. ( starts with IAC )
{
var telCmd = InputArray.NextTelnetCommand();
if (telCmd != null)
{
var rv = TelnetConnection.ProcessTelnetCommand(telCmd, NegotiateSettings);
var cx = rv.Item1;
var writeBytes = rv.Item2;
logList.AddItems(rv.Item3);
WriteToHost(logList, writeBytes, InputArray.NetStream);
}
}
}
return(new Tuple <List <ShowItemBase>, TelnetLogList>(showItemList, logList));
}
public static Tuple <WorkstationCommandList, TelnetLogList> GetAndParseWorkstationCommandList(
NetworkStreamBackedInputByteArray InputArray,
SessionSettings SessionSettings)
{
TelnetLogList logList = new TelnetLogList();
var wrkstnCmdList = new WorkstationCommandList();
var dsh = new DataStreamHeader(InputArray);
if (dsh != null)
{
logList.AddItems(Direction.Read, dsh.ToReportLines( ), true);
}
if ((dsh != null) && (dsh.Errmsg == null))
{
bool lastCmdWasTelnet_EOR = false;
while (dsh != null)
{
// read available bytes from input stream.
if (InputArray.IsEof() && (lastCmdWasTelnet_EOR == false))
{
var log = InputArray.ReadFromNetworkStream(5, 5);
logList.AddItems(log);
}
// no input data to process.
if (InputArray.IsEof())
{
break;
}
lastCmdWasTelnet_EOR = false;
// check for IAC EOR
var telCode = InputArray.PeekTelnetCommandCode(CommandCode.EOR);
if (telCode != null)
{
var telCmd = InputArray.NextTelnetCommand();
logList.AddItems(Direction.Read, telCmd.ToReportLines(), true);
lastCmdWasTelnet_EOR = true;
}
// process the input as workstation data stream commands.
else
{
var rv = ParseAndProcessWorkstationCommand(InputArray, dsh);
var workstationCommand = rv.Item1;
dsh = rv.Item3;
logList.AddItems(rv.Item4);
if (workstationCommand != null)
{
wrkstnCmdList.Add(workstationCommand);
}
}
}
}
return(new Tuple <WorkstationCommandList, TelnetLogList>(wrkstnCmdList, logList));
}
public TelnetLogList ParseDataStream(
NetworkStreamBackedInputByteArray inputArray, SessionSettings sessionSettings)
{
var logList = new TelnetLogList();
bool didParse = true;
while ((didParse == true) && (inputArray.RemainingLength > 0))
{
didParse = false;
if (didParse == false)
{
var telCmd = inputArray.NextTelnetCommand();
if (telCmd != null)
{
var s1 = telCmd.ToString();
logList.AddItem(Direction.Read, s1);
didParse = true;
}
}
if (didParse == false)
{
var rv = Process5250.GetAndParseWorkstationCommandList(
inputArray, sessionSettings);
logList.AddItems(rv.Item2);
var wrkstnCmdList = rv.Item1;
// draw the fields and literals on the canvas.
if (wrkstnCmdList?.Count > 0)
{
didParse = true;
foreach (var workstationCmd in wrkstnCmdList)
{
}
}
}
}
return(logList);
}
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));
}