/// <summary>
/// This function serves command event streams.
/// </summary>
/// <param name="s"></param>
void ServeCommand(NetworkStream inStream, NetworkStream outStream)
{
while (true)
{
int command = ReadInt(inStream);
TcpTpmCommands theCommand = (TcpTpmCommands)command;
//Console.WriteLine("command " + theCommand.ToString());
if (theCommand == TcpTpmCommands.RemoteHandshake)
{
int clientVersion = ReadInt(inStream);
if (clientVersion == 0)
{
throw new Exception("Incompatible client (version 0, expected version 1 or higher)");
}
}
if (TheDeviceType == DeviceType.Tcp)
{
WriteInt((int)theCommand, outStream);
switch (theCommand)
{
case TcpTpmCommands.SignalHashStart:
case TcpTpmCommands.SignalHashEnd:
break;
case TcpTpmCommands.SendCommand:
byte[] loc = Read(1, inStream);
byte[] cmd = ReadVarArray(inStream);
CommandModifier active = new CommandModifier();
Write(loc, outStream);
WriteVarArray(cmd, outStream);
WriteVarArray(ReadVarArray(outStream), inStream);
break;
case TcpTpmCommands.SignalHashData:
byte[] data = ReadVarArray(inStream);
WriteVarArray(data, outStream);
break;
case TcpTpmCommands.RemoteHandshake:
WriteInt(Version, outStream);
int endPointVersion = ReadInt(outStream);
if (endPointVersion == 0)
{
throw new Exception("Incompatible end point (version 0, expected version 1 or higher)");
}
tpmEndPointInfo = ReadInt(outStream);
WriteInt(Version, inStream);
WriteInt(tpmEndPointInfo, inStream);
break;
case TcpTpmCommands.SessionEnd:
case TcpTpmCommands.Stop:
if (TheDeviceType == DeviceType.Tcp)
{
// Forward session end request and do not wait for ACK
WriteInt((int)theCommand, outStream);
//GetAndSendAck(outStream, inStream);
}
// Send back ACK and exit the communication loop
Write(ZeroInt, inStream);
return;
default:
throw new NotImplementedException("");
}
GetAndSendAck(outStream, inStream);
}
else // TBS device
{
switch (theCommand)
{
case TcpTpmCommands.SignalHashStart:
case TcpTpmCommands.SignalHashEnd:
NotImplemented(theCommand);
Write(OneInt, inStream);
break;
case TcpTpmCommands.SignalHashData:
byte[] data = ReadVarArray(inStream);
NotImplemented(theCommand);
Write(OneInt, inStream);
break;
case TcpTpmCommands.SendCommand:
byte[] loc = Read(1, inStream);
byte[] cmd = ReadVarArray(inStream);
CommandModifier active = new CommandModifier();
byte[] outBuf;
tbsDevice.DispatchCommand(active, cmd, out outBuf);
WriteVarArray(outBuf, inStream);
Write(ZeroInt, inStream);
break;
case TcpTpmCommands.RemoteHandshake:
WriteInt(Version, inStream);
WriteInt(tpmEndPointInfo, inStream);
Write(ZeroInt, inStream);
break;
case TcpTpmCommands.SessionEnd:
case TcpTpmCommands.Stop:
// Send back ACK and exit the communication loop
Write(ZeroInt, inStream);
return;
default:
throw new NotImplementedException("");
}
}
}
}