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)); }
/// <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 <object[], string> ParseResponseStream( TelnetLogList LogList, byte[] ResponseStream) { List <object> listItems = new List <object>(); string errmsg = null; var inputArray = new NetworkStreamBackedInputByteArray(ResponseStream, ResponseStream.Length); var writeStream = new ByteArrayBuilder(); DataStreamHeader dsHeader = null; ResponseHeader responseHeader = null; // stream starts with data stream header. dsHeader = new DataStreamHeader(inputArray); listItems.Add(dsHeader); errmsg = dsHeader.Errmsg; LogList.AddItems(Direction.Write, dsHeader.ToReportLines(), true); // next is the response header. if (errmsg == null) { responseHeader = new ResponseHeader(inputArray); listItems.Add(responseHeader); errmsg = responseHeader.Errmsg; LogList.AddItems(Direction.Write, responseHeader.ToReportLines(), true); } // repeating instances of sbaOrder, textDataOrder pairs. while (true) { // 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; } listItems.Add(orderPair); LogList.AddItems(Direction.Write, orderPair.ToReportLines(), true); } return(new Tuple <object[], string>(listItems.ToArray(), errmsg)); }