148 lines
6.0 KiB
C++
148 lines
6.0 KiB
C++
//
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// Copyright 2020 Electronic Arts Inc.
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//
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// TiberianDawn.DLL and RedAlert.dll and corresponding source code is free
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// software: you can redistribute it and/or modify it under the terms of
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// the GNU General Public License as published by the Free Software Foundation,
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// either version 3 of the License, or (at your option) any later version.
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// TiberianDawn.DLL and RedAlert.dll and corresponding source code is distributed
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// in the hope that it will be useful, but with permitted additional restrictions
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// under Section 7 of the GPL. See the GNU General Public License in LICENSE.TXT
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// distributed with this program. You should have received a copy of the
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// GNU General Public License along with permitted additional restrictions
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// with this program. If not, see https://github.com/electronicarts/CnC_Remastered_Collection
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/* $Header: /CounterStrike/NULLCONN.H 1 3/03/97 10:25a Joe_bostic $ */
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/***************************************************************************
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** C O N F I D E N T I A L --- W E S T W O O D S T U D I O S **
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***************************************************************************
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* *
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* Project Name : Command & Conquer *
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* *
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* File Name : NULLCONN.H *
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* *
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* Programmer : Bill Randolph *
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* *
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* Start Date : December 19, 1994 *
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* *
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* Last Update : April 3, 1995 [BR] *
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* *
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*-------------------------------------------------------------------------*
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* *
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* This is the Connection Class for a NULL-Modem connection. It inherits *
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* a Queue, PacketBuf, timeout variables from ConnectionClass. It *
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* inherits its Send_/Receive_/Get_Packet functions, and the non-sequenced *
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* ACK/Retry logic in Service_Send_Queue & Service_Receive_Queue from *
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* ConnectionClass. *
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* *
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* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
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#ifndef NULLCONN_H
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#define NULLCONN_H
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/*
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********************************* Includes **********************************
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*/
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#include "connect.h"
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//#include "commlib.h"
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/*
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********************************** Defines **********************************
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*/
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#define PACKET_SERIAL_START 0xDABD
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#define PACKET_SERIAL_VERIFY 0xDEAF
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#define PACKET_SERIAL_OVERHEAD_SIZE (sizeof( SerialHeaderType ) + sizeof( SerialCRCType ))
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typedef struct {
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unsigned short MagicNumber;
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unsigned short Length;
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unsigned short MagicNumber2;
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} SerialHeaderType;
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typedef struct {
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int SerialCRC;
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} SerialCRCType;
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/*
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***************************** Class Declaration *****************************
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*/
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class NullModemConnClass : public ConnectionClass
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{
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/*
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---------------------------- Public Interface ----------------------------
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*/
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public:
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/*.....................................................................
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Constructor/destructor.
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.....................................................................*/
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NullModemConnClass (int numsend, int numrecieve, int maxlen,
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unsigned short magicnum);
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virtual ~NullModemConnClass ();
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/*.....................................................................
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Initialization.
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.....................................................................*/
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#ifdef WIN32
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void Init (HANDLE port_handle);
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#else //WIN32
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void Init (PORT *port);
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#endif //WIN32
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/*.....................................................................
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Utility routines.
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.....................................................................*/
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unsigned long Actual_Max_Packet (void) { return (MaxPacketLen +
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(sizeof(SerialHeaderType)) + sizeof(int) + sizeof (char)); }
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/*.....................................................................
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This routine computes a CRC value for the given buffer.
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.....................................................................*/
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static int Compute_CRC(char *buf, int buflen);
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/*.....................................................................
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This routine returns the number of bytes extra added the packet
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for communication.
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.....................................................................*/
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static int Packet_Overhead_Size( void );
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/*
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--------------------------- Private Interface ----------------------------
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*/
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protected:
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/*.....................................................................
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This routine actually performs a hardware-dependent data send.
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.....................................................................*/
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virtual int Send (char *buf, int buflen, void *extrabuf, int extralen);
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#ifdef WIN32
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/*
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** This is the winsoze port handle
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*/
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HANDLE PortHandle;
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#else //WIN32
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/*.....................................................................
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This is the PORT value used by the GreenLeaf calls.
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.....................................................................*/
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PORT *Port;
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#endif //WIN32
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/*.....................................................................
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This buffer is a staging area for data sent out; it includes the
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packet sent by the parent class (which includes the application's
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packet, plus the CommHeaderType header), plus:
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- 2-byte buffer start ID
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- 2-byte length
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- 4-byte CRC value (at the end of the buffer)
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This is the actual packet that gets sent across the serial line.
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.....................................................................*/
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char *SendBuf;
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};
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#endif
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/************************** end of nullconn.h ******************************/
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