/*
 *  iphdr.h -- TCP/IP interface
 *
 *  iphdr.h is a part of binkd project
 *
 *  Copyright (C) 1996  Dima Maloff, 5047/13
 *
 *  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. See COPYING.
 */

/*
 * $Id: iphdr.h,v 2.24.2.1 2014/08/20 06:12:37 gul Exp $
 *
 * $Log: iphdr.h,v $
 * Revision 2.24.2.1  2014/08/20 06:12:37  gul
 * Fixed 100% cpu load if called with poll flag,
 * backport many fixes related to compilation on win32 and os/2.
 *
 * Revision 2.24  2012/01/25 21:02:43  green
 * Some changes to enable compilation on OS/2 with GCC/kLIBC
 *
 * Revision 2.23  2012/01/08 17:34:57  green
 * Avoid using MAXHOSTNAMELEN
 *
 * Revision 2.22  2012/01/08 16:23:52  green
 * Fixed compilation in Cygwin/MinGW
 *
 * Revision 2.21  2012/01/08 13:21:19  green
 * Ensure sufficiently long MAXHOSTNAMELEN
 *
 * Revision 2.20  2012/01/07 23:38:45  green
 * Improved getnameinfo handling, retry without name resolution
 *
 * Revision 2.19  2012/01/06 07:23:47  gul
 * Fix resolv.h check under FreeBSD; cosmetics
 *
 * Revision 2.18  2012/01/03 17:25:31  green
 * Implemented IPv6 support
 * - replace (almost) all getXbyY function calls with getaddrinfo/getnameinfo (RFC2553) calls
 * - Add compatibility layer for target systems not supporting RFC2553 calls in rfc2553.[ch]
 * - Add support for multiple listen sockets -- one for IPv4 and one for IPv6 (use V6ONLY)
 * - For WIN32 platform add configuration parameter IPV6 (mutually exclusive with BINKD9X)
 * - On WIN32 platform use Winsock2 API if IPV6 support is requested
 * - config: node IP address literal + port supported: [<ipv6 address>]:<port>
 *
 * Revision 2.17  2004/07/12 08:21:20  stas
 * Fix the file name case. Bugreport from Andrey Slusar 2:467/126
 *
 * Revision 2.16  2003/10/06 17:16:47  stas
 * (Cosmetics) Rename tcperr() to w32err() for win32/win9x versions
 *
 * Revision 2.15  2003/08/26 16:06:26  stream
 * Reload configuration on-the fly.
 *
 * Warning! Lot of code can be broken (Perl for sure).
 * Compilation checked only under OS/2-Watcom and NT-MSVC (without Perl)
 *
 * Revision 2.14  2003/08/24 18:54:30  gul
 * Bugfix in timeout check on win32
 *
 * Revision 2.13  2003/08/24 00:45:44  hbrew
 * win9x-select-workaround fix, thanks to Pavel Gulchouck
 *
 * Revision 2.12  2003/07/18 10:30:33  stas
 * New functions: IsNT(), Is9x(); small code cleanup
 *
 * Revision 2.11  2003/06/11 09:00:43  stas
 * Don't try to install/uninstall/control service on incompatible OS. Thanks to Alexander Reznikov
 *
 * Revision 2.10  2003/06/04 10:36:58  stas
 * Thread-safety tcperr() implementation on Win32
 *
 * Revision 2.9  2003/03/30 10:14:40  gul
 * Use HAVE_SOCKLEN_T macro
 *
 * Revision 2.8  2003/03/26 13:53:28  gul
 * Fix OS/2 compilation
 *
 * Revision 2.7  2003/03/11 09:21:30  gul
 * Fixed OS/2 Watcom compilation
 *
 * Revision 2.6  2003/03/11 00:04:25  gul
 * Use patches for compile under MSDOS by MSC 6.0 with IBMTCPIP
 *
 * Revision 2.5  2003/03/10 18:16:10  gul
 * Define socklen_t for win32
 *
 * Revision 2.4  2003/03/10 12:16:53  gul
 * Use HAVE_DOS_H macro
 *
 * Revision 2.3  2003/03/01 20:16:27  gul
 * OS/2 IBM C support
 *
 * Revision 2.2  2003/03/01 18:37:08  gul
 * Use HAVE_SYS_PARAM_H macro
 *
 * Revision 2.1  2003/02/28 20:39:08  gul
 * Code cleanup:
 * change "()" to "(void)" in function declarations;
 * change C++-style comments to C-style
 *
 * Revision 2.0  2001/01/10 12:12:38  gul
 * Binkd is under CVS again
 *
 * Revision 1.4  1997/10/23  04:02:31  mff
 * many, many changes (forget to ci a version or two)
 *
 * Revision 1.2  1996/12/07  11:42:18  mff
 * soclose() for NT was defined as close(). Fixed.
 *
 *
 */
#ifndef _iphdrs_h
#define _iphdrs_h

#include <sys/types.h>

#ifdef HAVE_SYS_PARAM_H
#include <sys/param.h>
#endif

#include "sys.h"                            /* Get system i/o headers */

#ifdef IBMTCPIP
  #include <errno.h>
  #undef ENAMETOOLONG
  #undef ENOTEMPTY

  #define BSD_SELECT
  #define __off_t
  #define __size_t
  #include <types.h>
  #include <utils.h>
  #include <unistd.h>
  #include <sys/select.h>
#endif

#if !defined(WIN32)
  #if defined(IBMTCPIPDOS)
    #include <sys/tcptypes.h>
  #endif

  #ifdef HAVE_NETINET_IN_H
    #include <netinet/in.h>
  #endif
  #ifdef HAVE_NETDB_H
    #include <netdb.h>			    /* One of these two should have
					     * MAXHOSTNAMELEN */
  #endif
#endif

#ifdef HAVE_ARPA_INET_H
  #include <arpa/inet.h>
#endif

#if !defined(WIN32)
  #include <sys/socket.h>
#endif

/* Some systems have MAXHOSTNAMELEN = 64 */
#ifdef NI_MAXHOST
  #define BINKD_FQDNLEN NI_MAXHOST	    /* max length for getnameinfo */
#else
  #define BINKD_FQDNLEN 255		    /* max FQDN size */
#endif

#ifdef NI_MAXSERV
  #define MAXSERVNAME NI_MAXSERV	    /* max length for getnameinfo */
#else
  #define MAXSERVNAME 80                    /* max id len in /etc/services */
#endif

#ifndef HAVE_SOCKLEN_T
  typedef int socklen_t;
#endif

#if defined(IBMTCPIP)
const char *tcperr (void);

  #define ReleaseErrorList()
  #define TCPERR() tcperr()
  #define TCPERRNO (sock_errno())
  #include <nerrno.h>
  #define TCPERR_WOULDBLOCK EWOULDBLOCK
  #define TCPERR_AGAIN EAGAIN
  #define sock_deinit()
  #ifndef MAXSOCKETS
    #define MAXSOCKETS 2048
  #endif
#elif defined(IBMTCPIPDOS)
const char *tcperr (void);

  #define ReleaseErrorList()
  #define TCPERR() tcperr()
  #define TCPERRNO (tcperrno)
  #include <sys/errno.h>
  #undef ENAMETOOLONG
  #undef ENOTEMPTY
  #define TCPERR_WOULDBLOCK EWOULDBLOCK
  #define TCPERR_AGAIN EAGAIN
  #define sock_deinit()
#elif defined(WIN32)
const char *w32err (int);
void ReleaseErrorList(void);

  #include <errno.h>
  #define TCPERR() w32err(h_errno)
  #define TCPERRNO (h_errno)
  #define TCPERR_WOULDBLOCK WSAEWOULDBLOCK
  #define TCPERR_AGAIN WSAEWOULDBLOCK
  #include "nt/WSock.h"
  #define sock_init() WinsockIni()
  #define sock_deinit() WinsockClean()
  #define soclose(h) closesocket(h)
/* w9x_workaround_sleep: 1000000 = 1 sec, 10000 = 10 ms */
  #define w9x_workaround_sleep 10000
#else
  #include <errno.h>
  #define ReleaseErrorList()
  #define TCPERR() strerror(errno)
  #define TCPERRNO errno
  #define TCPERR_WOULDBLOCK EWOULDBLOCK
  #define TCPERR_AGAIN EAGAIN
  #define sock_init() 0
  #define sock_deinit()
  #define soclose(h) close(h)
#endif

#if !defined(WIN32)
typedef int SOCKET;

  #define INVALID_SOCKET (-1)
  #define SOCKET_ERROR (-1)
#endif

#ifndef INADDR_NONE
  #define INADDR_NONE -1
#endif

/* OS/2 doesn't support IPv6, we are trying to detect availability of
 * some structures based on this define
 */
#ifdef OS2
  #undef AF_INET6
#endif

#endif
