/*
	net_sys.h
	common network system header

	Copyright (C) 2007-2010  O.Sezer <sezero@users.sourceforge.net>

	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:

		Free Software Foundation, Inc.
		51 Franklin St, Fifth Floor,
		Boston, MA  02110-1301  USA
*/

#if defined(_USE_SDLNET)

/* can not use the IP banning mechanism in net_dgrm.c with
   limited SDL_net functionality. */
#undef	BAN_TEST

#undef	HAVE_SA_LEN

#define	sys_socket_t	int
#define	INVALID_SOCKET	(-1)
#define	SOCKET_ERROR	(-1)

#ifndef MAXHOSTNAMELEN
#define MAXHOSTNAMELEN	256
#endif
#ifndef AF_INET
#define AF_INET		2		/* internet */
#endif
#ifndef INADDR_LOOPBACK
#define INADDR_LOOPBACK	0x7f000001	/* 127.0.0.1 */
#endif

#ifndef __NET_SYS_H__
#define __NET_SYS_H__	/* the rest below are not needed. */
#endif

#endif	/* _USE_SDLNET */


#ifndef __NET_SYS_H__
#define __NET_SYS_H__

#include <sys/types.h>
#include <errno.h>
#include <stddef.h>
#include <limits.h>

#if defined(__FreeBSD__) || defined(__DragonFly__)	|| \
    defined(__OpenBSD__) || defined(__NetBSD__)		|| \
    defined(__MACOSX__)
/* struct sockaddr has unsigned char sa_len as the first member in BSD
 * variants and the family member is also an unsigned char instead of an
 * unsigned short. This should matter only when PLATFORM_UNIX is defined,
 * however, checking for the offset of sa_family in every platform that
 * provide a struct sockaddr doesn't hurt either (see down below for the
 * compile time asserts.) */
#define	HAVE_SA_LEN	1
#define	SA_FAM_OFFSET	1
#else
#undef	HAVE_SA_LEN
#define	SA_FAM_OFFSET	0
#endif	/* BSD, sockaddr */

/* unix includes and compatibility macros */
#if defined(PLATFORM_UNIX) || defined(PLATFORM_AMIGA)

#include <sys/param.h>
#include <sys/ioctl.h>
#include <unistd.h>

#if defined(__sun) || defined(sun)
#include <sys/filio.h>
#endif	/* __sunos__ */

#if defined(PLATFORM_AMIGA)
#include <proto/socket.h>
#endif
#include <sys/socket.h>

#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>

typedef int	sys_socket_t;
#define	INVALID_SOCKET	(-1)
#define	SOCKET_ERROR	(-1)

#if defined(PLATFORM_AMIGA)
typedef int	socklen_t;
#define	SOCKETERRNO	Errno()
#define	ioctlsocket	IoctlSocket
#define	closesocket	CloseSocket
#else
#define	SOCKETERRNO	errno
#define	ioctlsocket	ioctl
#define	closesocket	close
#endif

#define	NET_EWOULDBLOCK		EWOULDBLOCK
#define	NET_ECONNREFUSED	ECONNREFUSED

#define	socketerror(x)	strerror((x))

/* Verify that we defined HAVE_SA_LEN correctly: */
COMPILE_TIME_ASSERT(sockaddr, offsetof(struct sockaddr, sa_family) == SA_FAM_OFFSET);

#endif	/* end of unix stuff */


/* windows includes and compatibility macros */
#if defined(PLATFORM_WINDOWS)

/* NOTE: winsock[2].h already includes windows.h */
#if !defined(_USE_WINSOCK2)
#include <winsock.h>
#else
#include <winsock2.h>
#include <ws2tcpip.h>
#endif

/* there is no in_addr_t on windows: define it as
   the type of the S_addr of in_addr structure */
typedef u_long	in_addr_t;	/* uint32_t */

/* on windows, socklen_t is to be a winsock2 thing */
#if !defined(IP_MSFILTER_SIZE)
typedef int	socklen_t;
#endif	/* socklen_t type */

typedef SOCKET	sys_socket_t;

#define	SOCKETERRNO	WSAGetLastError()
#define	NET_EWOULDBLOCK		WSAEWOULDBLOCK
#define	NET_ECONNREFUSED	WSAECONNREFUSED
/* must #include "wsaerror.h" for this : */
#define	socketerror(x)	__WSAE_StrError((x))

/* Verify that we defined HAVE_SA_LEN correctly: */
COMPILE_TIME_ASSERT(sockaddr, offsetof(struct sockaddr, sa_family) == SA_FAM_OFFSET);

#endif	/* end of windows stuff */


/* dos includes and compatibility macros */
#if defined(PLATFORM_DOS)

/* our local headers : */
#include "dos/dos_inet.h"
#include "dos/dos_sock.h"

#endif	/* end of dos stuff. */


/* macros which may still be missing */

#if !defined(INADDR_NONE)
#define	INADDR_NONE	((in_addr_t) 0xffffffff)
#endif	/* INADDR_NONE */

#if !defined(INADDR_LOOPBACK)
#define	INADDR_LOOPBACK	((in_addr_t) 0x7f000001)	/* 127.0.0.1	*/
#endif	/* INADDR_LOOPBACK */


#if !defined(MAXHOSTNAMELEN)
/* SUSv2 guarantees that `Host names are limited to 255 bytes'.
   POSIX 1003.1-2001 guarantees that `Host names (not including
   the terminating NUL) are limited to HOST_NAME_MAX bytes'. */
#define	MAXHOSTNAMELEN		256
#endif	/* MAXHOSTNAMELEN */


#endif	/* __NET_SYS_H__ */