Method HandleMsg

cpp/src/command_classes/CRC16Encap.cpp:64–101

----------------------------------------------------------------------------- Handle a message from the Z-Wave network -----------------------------------------------------------------------------

// Handle a message from the Z-Wave network
//-----------------------------------------------------------------------------
bool CRC16Encap::HandleMsg
(
	uint8 const* _data,
	uint32 const _length,
	uint32 const _instance	// = 1
)
{
	if( CRC16EncapCmd_Encap == (CRC16EncapCmd)_data[0] )
	{
		Log::Write( LogLevel_Info, GetNodeId(), "Received CRC16-command from node %d", GetNodeId());

		uint16 crcM = (_data[_length - 3] << 8) + _data[_length - 2] ; // crc as reported in msg
		uint16 crcC = crc16(&_data[0], _length - 3 );				   // crc calculated

		if ( crcM != crcC )
		{
			Log::Write( LogLevel_Info, GetNodeId(), "CRC check failed, message contains 0x%.4x but should be 0x%.4x", crcM, crcC);
			return false;
		}

		if( Node const* node = GetNodeUnsafe() )
		{
			uint8 commandClassId = _data[1];

			if( CommandClass* pCommandClass = node->GetCommandClass( commandClassId, false ) )
			{
				pCommandClass->HandleMsg( &_data[2], _length - 4 );
			}
			if( CommandClass* pCommandClass = node->GetCommandClass( commandClassId, true ) )
			{
				pCommandClass->HandleIncomingMsg( &_data[2], _length - 4 );
			}
		}

		return true;
	}
	return false;
}