// original : core.h 2003/03/14 11:55:25 Rev 1.4

#ifndef	_SOCKET_H_
#define _SOCKET_H_

#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>

// define declaration

#define RFIFOP(fd,pos) (session[fd]->rdata+session[fd]->rdata_pos+(pos))
#define RFIFOB(fd,pos) (*(unsigned char*)(session[fd]->rdata+session[fd]->rdata_pos+(pos)))
#define RFIFOW(fd,pos) (*(unsigned short*)(session[fd]->rdata+session[fd]->rdata_pos+(pos)))
#define RFIFOL(fd,pos) (*(unsigned int*)(session[fd]->rdata+session[fd]->rdata_pos+(pos)))
#define RFIFOSKIP(fd,len) ((session[fd]->rdata_size-session[fd]->rdata_pos-(len)<0) ? (fprintf(stderr,"too many skip\n"),exit(1)) : (session[fd]->rdata_pos+=(len)))
#define RFIFOREST(fd) (session[fd]->rdata_size-session[fd]->rdata_pos)
#define RFIFOFLUSH(fd) (memmove(session[fd]->rdata,RFIFOP(fd,0),RFIFOREST(fd)),session[fd]->rdata_size=RFIFOREST(fd),session[fd]->rdata_pos=0)
#define RFIFOSPACE(fd) (session[fd]->max_rdata-session[fd]->rdata_size)
#define RBUFP(p,pos) (((unsigned char*)(p))+(pos))
#define RBUFB(p,pos) (*(unsigned char*)RBUFP((p),(pos)))
#define RBUFW(p,pos) (*(unsigned short*)RBUFP((p),(pos)))
#define RBUFL(p,pos) (*(unsigned int*)RBUFP((p),(pos)))

#define WFIFOSPACE(fd) (session[fd]->max_wdata-session[fd]->wdata_size)
#define WFIFOP(fd,pos) (session[fd]->wdata+session[fd]->wdata_size+(pos))
#define WFIFOB(fd,pos) (*(unsigned char*)(session[fd]->wdata+session[fd]->wdata_size+(pos)))
#define WFIFOW(fd,pos) (*(unsigned short*)(session[fd]->wdata+session[fd]->wdata_size+(pos)))
#define WFIFOL(fd,pos) (*(unsigned int*)(session[fd]->wdata+session[fd]->wdata_size+(pos)))
// use function instead of macro.
//#define WFIFOSET(fd,len) (session[fd]->wdata_size = (session[fd]->wdata_size+(len)+2048 < session[fd]->max_wdata) ? session[fd]->wdata_size+len : session[fd]->wdata_size)
#define WBUFP(p,pos) (((unsigned char*)(p))+(pos))
#define WBUFB(p,pos) (*(unsigned char*)WBUFP((p),(pos)))
#define WBUFW(p,pos) (*(unsigned short*)WBUFP((p),(pos)))
#define WBUFL(p,pos) (*(unsigned int*)WBUFP((p),(pos)))

#ifdef __INTERIX
#define FD_SETSIZE 4096
#endif	// __INTERIX

#ifdef CYGWIN
#undef FD_SETSIZE
#define FD_SETSIZE 4096
#endif


// Struct declaration

struct socket_data{
	int eof;
	unsigned char *rdata,*wdata;
	int max_rdata,max_wdata;
	int rdata_size,wdata_size;
	int rdata_pos;
	struct sockaddr_in client_addr;
	int (*func_recv)(int);
	int (*func_send)(int);
	int (*func_parse)(int);
	void* session_data;
};

// Data prototype declaration

extern struct socket_data *session[FD_SETSIZE];

extern int rfifo_size,wfifo_size;
extern int fd_max;

// Function prototype declaration

int make_listen_port(int);
int make_connection(long,int);
int delete_session(int);
int realloc_fifo(int fd,int rfifo_size,int wfifo_size);
int WFIFOSET(int fd,int len);

int do_sendrecv(int next);
int do_parsepacket(void);
void do_socket(void);

void set_defaultparse(int (*defaultparse)(int));

#endif	// _SOCKET_H_