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// socket.h - Socket definitions
//
// Written by
// Timothy Stark <sword7@speakeasy.org>
//
// This file is part of the TS-10 Emulator.
// See README for copyright notice.
//
// 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#include <sys/time.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <net/if.h>
#include <netinet/in.h>
#include <netdb.h>
#include <stropts.h>
#include <errno.h>
// TUN/TAP connections
#include <linux/if_tun.h>
#define NET_MAXSOCKETS 256 // Maximum number of open sockets.
#define NET_MAXBUF 2048 // Manimum number of bytes of buffer.
typedef struct sockaddr SOCKADDR;
typedef struct sockaddr_in SOCKADDRIN;
typedef struct Socket SOCKET;
typedef struct SocketType SOCKTYPE;
struct SocketType {
char *Name;
// Callback functions
void (*Accept)(SOCKET *);
void (*Eof)(SOCKET *, int, int);
void (*Process)(SOCKET *, char *, int);
void (*Status)(SOCKET *);
};
struct Socket {
// Internal variables
SOCKET *Next; // Next Socket (Forward)
SOCKET *Back; // Previous Socket (Backward)
char *Name; // Socket Name
int idSocket; // Socket ID (FD number)
int Flags; // Socket Flags
SOCKET *Server; // Parent socket.
int maxConns; // Maximum number of opened connections.
int nConns; // Current number of opened connections.
SOCKADDRIN locAddr; // Local Internet Address/Port
SOCKADDRIN remAddr; // Remote Internet Address/Port
SOCKTYPE *Type; // Socket Type
// User-defined variables;
void *Device; // User-defined Device
int uPort; // User-defined Port/Line
void *uData; // User-defined Data
// Callback functions
void (*Accept)(SOCKET *);
void (*Eof)(SOCKET *, int, int);
void (*Process)(SOCKET *, char *, int);
};
// Flag definitions for Socket variable
#define SCK_OPENED 0x80000000 // Socket is opened or closed.
#define SCK_SERVER 0x40000000 // Socket is server or client.
#define SCK_LISTEN 0x20000000 // Socket is listening.
#define SCK_CONNECT 0x10000000 // Socket is connecting (incoming).
#define SCK_SOCKET 0x08000000 // Socket is real socket.
#define SCK_STDIO 0x04000000 // Socket is standard I/O (TTY)
#define SCK_FILE 0x02000000 // Socket is file I/O
#define SCK_PACKET 0x01000000 // Socket is packet type.
// Socket mode defintions - Server, Client, or Connected.
#define NET_SERVER 1 // Socket's Server role
#define NET_CLIENT 2 // Socket's Client role
#define NET_CONNECT 3 // Incoming socket connection
#define NET_STDIO 4 // Standard I/O (TTY)
#define NET_FILE 5 // File I/O
#define NET_TUN 6 // TUN/TAP connection
// Socket error definitions
#define NET_OK 0 // Operation successful
#define NET_OPENERR 1 // Open Error
#define NET_BINDERR 2 // Bind Error
#define NET_FULLSOCKETS 3 // Sockets are full
#define NET_UNKNOWNMODE 4 // Unknown Mode
#define NET_SOCKERR 5 // Socket Error
#define NET_NOTVALID 6 // Not valid socket
// Telnet code definitions
#define TEL_SE 240 // End of subnegotiation parameters
#define TEL_NOP 241 // No operation.
#define TEL_DM 242 // Data Mark
#define TEL_BRK 243 // Break
#define TEL_IP 244 // Interrupt Process
#define TEL_AO 245 // Abort Output
#define TEL_AYT 246 // Are You There?
#define TEL_EC 247 // Erase Character
#define TEL_EL 248 // Erase Line
#define TEL_GA 249 // Go Ahead
#define TEL_SB 250 // Subnegotiation
#define TEL_WILL 251 // Will (Option code)
#define TEL_WONT 252 // Will Not (Option Code)
#define TEL_DO 253 // Do (Option Code)
#define TEL_DONT 254 // Don't (Option Code)
#define TEL_IAC 255 // Interpret as Command
// Protoype definitions
void sock_Intialize(void);
void sock_Cleanup(void);
#ifdef DEBUG
void sock_Dump(int, uchar *, int, char *);
#endif /* DEBUG */
SOCKET *sock_Open(char *, int, int);
int sock_Close(SOCKET *);
void sock_CloseAll(char *);
int sock_Listen(SOCKET *, int);
SOCKET *sock_Accept(SOCKET *);
int sock_Send(int, char *, int);
int sock_Print(SOCKET *, char *, int);
void SockGetEtherAddr(char *, uint8 *);
int SockSendPacket(SOCKET *, uint8 *, uint32);
int SockPrintf(SOCKET *, cchar *, ...);
int sock_ProcessTelnet(uchar *, int);
void SocketHandler(int);
void sock_ShowList(void);
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