public override void DispatchCommand(CommandModifier active, byte[] inBuf, out byte[] outBuf)
{
if (CommandCallbacks != null)
{
byte[] tempInBuf;
CommandCallbacks.PreCallback(inBuf, out tempInBuf);
if (tempInBuf != null)
{
inBuf = tempInBuf;
}
}
Device.DispatchCommand(active, inBuf, out outBuf);
if (CommandCallbacks != null)
{
CommandCallbacks.PostCallback(inBuf, outBuf);
}
}
// Send TPM-command buffer to device
public override void DispatchCommand(
CommandModifier mod,
byte[] cmdBuf,
out byte[] respBuf)
{
if (TrmDevice != null)
{
TrmDevice.DispatchCommand(mod, cmdBuf, out respBuf);
return;
}
if (_tpmIO == null)
{
throw new InvalidOperationException("TPM context not created.");
}
_tpmIO.Write(cmdBuf, 0, cmdBuf.Length);
int count = 0;
int bytesRead = 0;
do
{
bytesRead = _tpmIO.Read(_responseBuffer, 0, _responseBuffer.Length);
if (bytesRead > 0)
{
break;
}
#if WINDOWS_UWP
Task.Delay(TpmIORetryBackoffTime).Wait();
#else
Thread.Sleep(TpmIORetryBackoffTime);
#endif
Debug.WriteLine($"TPM {_tpmDevicePath} retry {count}.");
} while (count++ < TpmIORetryCount);
if (bytesRead <= 0)
{
throw new IOException($"No response from {_tpmDevicePath}");
}
respBuf = new byte[bytesRead];
Array.Copy(_responseBuffer, respBuf, bytesRead);
}
// Send TPM-command buffer to device
public override void DispatchCommand(
CommandModifier mod,
byte[] cmdBuf,
out byte[] respBuf)
{
if (TctiCtx != null && TctiCtxPtr != IntPtr.Zero)
{
TpmRc rc = TctiCtx.transmit(TctiCtxPtr, (ulong)cmdBuf.Length, cmdBuf);
if (rc != TpmRc.Success)
{
throw new TssException($"TCTI_CTX::transmit() failed: error {rc}");
}
ulong bytesReceived = (ulong)_responseBuffer.Length;
rc = TctiCtx.receive(TctiCtxPtr, ref bytesReceived, _responseBuffer, 5 * 60 * 1000);
if (rc != TpmRc.Success)
{
throw new TssException($"TCTI_CTX::receive() failed: error {rc}");
}
respBuf = new byte[bytesReceived];
Array.Copy(_responseBuffer, respBuf, (int)bytesReceived);
}
else if (TrmDevice != null)
{
TrmDevice.DispatchCommand(mod, cmdBuf, out respBuf);
return;
}
else if (_tpmIO != null)
{
_tpmIO.Write(cmdBuf, 0, cmdBuf.Length);
int count = 0;
int bytesRead = 0;
do
{
bytesRead = _tpmIO.Read(_responseBuffer, 0, _responseBuffer.Length);
if (bytesRead > 0)
{
break;
}
#if WINDOWS_UWP
Task.Delay(TpmIORetryBackoffTime).Wait();
#else
Thread.Sleep(TpmIORetryBackoffTime);
#endif
Debug.WriteLine($"TPM {_tpmDevicePath} retry {count}.");
} while (count++ < TpmIORetryCount);
if (bytesRead <= 0)
{
throw new IOException($"No response from {_tpmDevicePath}");
}
respBuf = new byte[bytesRead];
Array.Copy(_responseBuffer, respBuf, bytesRead);
}
else
{
throw new InvalidOperationException("TPM context is not initialized.");
}
}