/***************************************************************************
 *   Copyright (C) 2006 by Dominic Rath                                    *
 *   Dominic.Rath@gmx.de                                                   *
 *                                                                         *
 *   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.             *
 ***************************************************************************/
#ifndef REPLACEMENTS_H
#define REPLACEMENTS_H

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

/* include necessary headers for socket functionality */
#ifdef _WIN32
#include <winsock2.h>
#else
#include <sys/socket.h>
#include <sys/poll.h>
#include <netinet/in.h>
#include <unistd.h>
#include <fcntl.h>
#endif

/* gettimeofday() */
#ifndef HAVE_GETTIMEOFDAY

#ifndef _TIMEVAL_DEFINED
#define _TIMEVAL_DEFINED

struct timeval {
	long tv_sec;
	long tv_usec;
};
#endif /* _TIMEVAL_DEFINED */

struct timezone {
    int tz_minuteswest;
	int tz_dsttime;
};

extern int gettimeofday(struct timeval *tv, struct timezone *tz);
#endif

/* GNU extensions to the C library that may be missing on some systems */
#ifndef HAVE_STRNDUP
extern char* strndup(const char *s, size_t n);
#endif /* HAVE_STRNDUP */

#ifndef HAVE_STRNLEN
extern size_t strnlen(const char *s, size_t maxlen);
#endif /* HAVE_STRNLEN */

#ifndef HAVE_USLEEP
static __inline unsigned usleep(unsigned int usecs)
{
#ifdef _WIN32
	Sleep((usecs/1000));
	return 0;
#else
#error no usleep defined for your platform
#endif
}
#endif /* HAVE_USLEEP */

/* Windows specific */
#ifdef _WIN32

#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#include <time.h>

#undef ERROR

#if IS_MINGW == 1
static __inline unsigned char inb(unsigned short int port)
{
	unsigned char _v;
	__asm__ __volatile__ ("inb %w1,%0":"=a" (_v):"Nd" (port));
	return _v;
}

static __inline void outb(unsigned char value, unsigned short int port)
{
	__asm__ __volatile__ ("outb %b0,%w1": :"a" (value), "Nd" (port));
}

#endif /* IS_MINGW */
#endif  /* _WIN32 */

/* generic socket functions for Windows and Posix */
static __inline int write_socket( int handle, const void *buffer, unsigned int count )
{
#ifdef _WIN32
    return send(handle, buffer, count, 0);
#else
    return write(handle, buffer, count);
#endif
}

static __inline int read_socket( int handle, void *buffer, unsigned int count )
{
#ifdef _WIN32
    return recv(handle, buffer, count, 0);
#else
    return read(handle, buffer, count);
#endif
}

static __inline int close_socket(int sock)
{
#ifdef _WIN32
    return closesocket(sock);
#else
    return close(sock);
#endif
}

static __inline void socket_nonblock(int fd)
{
#ifdef _WIN32
	long nonblock = 1;
	ioctlsocket(fd, FIONBIO, &nonblock );
#else
	int oldopts = fcntl(fd, F_GETFL, 0);
	fcntl(fd, F_SETFL, oldopts | O_NONBLOCK);
#endif
}

#endif /* REPLACEMENTS_H */