/*
 * net_sys.h -- common network system header.
 * - depends on arch_def.h
 * - may depend on q_stdinc.h
 *
 * Copyright (C) 2007-2012  O.Sezer <sezero@users.sourceforge.net>
 * Copyright (C) 2009-2014 Baker and others
 *
 * 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
 */
// net_sys.h

#ifndef __CORE_NET_SYS_H__
#define __CORE_NET_SYS_H__

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

/* 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.) */

/* unix includes and compatibility macros */
#ifndef PLATFORM_WINDOWS
	#define	HAVE_SA_LEN	1
	#define	SA_FAM_OFFSET	1

	#include <sys/param.h>
	#include <sys/ioctl.h>
	#if defined(__sun) || defined(sun)
		#include <sys/filio.h>
		#include <sys/sockio.h>
	#endif //  __sun
	#include <unistd.h>
	#include <sys/socket.h>
	#include <netinet/in.h>
	#include <arpa/inet.h>
	#include <netdb.h>
	#include <fcntl.h> // Baker: for fcntl

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

	#if defined(__APPLE__) && defined(SO_NKE) && !defined(SO_NOADDRERR)
				/* ancient Mac OS X SDKs 10.2 and older are missing socklen_t */
		typedef int	socklen_t;			/* defining as signed int to match the old api */
	#endif	/* ancient OSX SDKs */

	#define	SOCKETERRNO	errno
	#define	ioctlsocket	ioctl
	#define	closesocket	close
	#define	selectsocket	select
	#define	IOCTLARG_P(x)	/* (char *) */ x

	#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);

	#define	socketerror(x)	strerror((x))
	/* there is h_errno but no hstrerror() */
	#define	hstrerror(x)	strerror((x))

#endif	/* end of unix stuff */



/* windows includes and compatibility macros */
#ifdef PLATFORM_WINDOWS
	#undef	HAVE_SA_LEN
	#define	SA_FAM_OFFSET	0

/* NOTE: winsock[2].h already includes windows.h */
	#if !defined(_USE_WINSOCK1)
		#include <winsock.h>
	#else
		#include <winsock2.h>
		#include <ws2tcpip.h>
	#endif

	typedef SOCKET	sys_socket_t;

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

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

	typedef u_long /*unsigned int*/	in_addr_t;	/* u_int32_t */

	#define	selectsocket	select
	#define	IOCTLARG_P(x)	/* (u_long *) */ x

	#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 */


/* 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 // ! __CORE_NET_SYS_H__




