src/hardware/serialport/misc_util.h

/*
 *  Copyright (C) 2002-2020  The DOSBox Team
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License along
 *  with this program; if not, write to the Free Software Foundation, Inc.,
 *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */


#ifndef SDLNETWRAPPER_H
#define SDLNETWRAPPER_H

#ifndef DOSBOX_DOSBOX_H
#include "dosbox.h"
#endif

#if C_MODEM

# ifndef DOSBOX_SUPPORT_H
#include "support.h"
#endif

// Netwrapper Capabilities
#define NETWRAPPER_TCP 1
#define NETWRAPPER_TCP_NATIVESOCKET 2

#if defined WIN32
 #define NATIVESOCKETS
 #include <winsock2.h>
 #include <ws2tcpip.h> //for socklen_t
 //typedef int  socklen_t;

//Tests for BSD/OS2/LINUX
#elif defined HAVE_STDLIB_H && defined HAVE_SYS_TYPES_H && defined HAVE_SYS_SOCKET_H && defined HAVE_NETINET_IN_H
 #define NATIVESOCKETS
 #define SOCKET int
 #include <stdio.h> //darwin
 #include <stdlib.h> //darwin
 #include <sys/types.h>
 #include <sys/socket.h>
 #include <netinet/in.h>
 //socklen_t should be handled by configure
#endif

#ifdef NATIVESOCKETS
 #define CAPWORD (NETWRAPPER_TCP|NETWRAPPER_TCP_NATIVESOCKET)
#else
 #define CAPWORD NETWRAPPER_TCP
#endif

#include "SDL_net.h"



Bit32u Netwrapper_GetCapabilities();


class TCPClientSocket {
        public:
        TCPClientSocket(TCPsocket source);
        TCPClientSocket(const char* destination, Bit16u port);
#ifdef NATIVESOCKETS
        Bit8u* nativetcpstruct;
        TCPClientSocket(int platformsocket);
#endif
        ~TCPClientSocket();
        
        // return:
        // -1: no data
        // -2: socket closed
        // >0: data char
        Bits GetcharNonBlock();
        
        
        bool Putchar(Bit8u data);
        bool SendArray(Bit8u* data, Bitu bufsize);
        bool ReceiveArray(Bit8u* data, Bitu* size);
        bool isopen;

        bool GetRemoteAddressString(Bit8u* buffer);

        void FlushBuffer();
        void SetSendBufferSize(Bitu bufsize);
        
        // buffered send functions
        bool SendByteBuffered(Bit8u data);
        bool SendArrayBuffered(Bit8u* data, Bitu bufsize);

        private:
        TCPsocket mysock = NULL;
        SDLNet_SocketSet listensocketset = NULL;

        // Items for send buffering
        Bitu sendbuffersize = 0;
        Bitu sendbufferindex = 0;
        
        Bit8u* sendbuffer;
};

class TCPServerSocket {
        public:
        bool isopen;
        TCPsocket mysock;
        TCPServerSocket(Bit16u port);
        ~TCPServerSocket();
        TCPClientSocket* Accept();
};


#endif //C_MODEM

#endif //# SDLNETWRAPPER_H