/****************************************************************************
 *                                                                          *
 *                         GNAT COMPILER COMPONENTS                         *
 *                                                                          *
 *                              G S O C K E T                               *
 *                                                                          *
 *                              C Header File                               *
 *                                                                          *
 *         Copyright (C) 2004-2008, Free Software Foundation, Inc.          *
 *                                                                          *
 * GNAT is free software;  you can  redistribute it  and/or modify it under *
 * terms of the  GNU General Public License as published  by the Free Soft- *
 * ware  Foundation;  either version 2,  or (at your option) any later ver- *
 * sion.  GNAT is distributed in the hope that it will be useful, but WITH- *
 * OUT 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  distributed with GNAT;  see file COPYING.  If not, write *
 * to  the  Free Software Foundation,  51  Franklin  Street,  Fifth  Floor, *
 * Boston, MA 02110-1301, USA.                                              *
 *                                                                          *
 * As a  special  exception,  if you  link  this file  with other  files to *
 * produce an executable,  this file does not by itself cause the resulting *
 * executable to be covered by the GNU General Public License. This except- *
 * ion does not  however invalidate  any other reasons  why the  executable *
 * file might be covered by the  GNU Public License.                        *
 *                                                                          *
 * GNAT was originally developed  by the GNAT team at  New York University. *
 * Extensive contributions were provided by Ada Core Technologies Inc.      *
 *                                                                          *
 ****************************************************************************/

#if defined(__nucleus__)

#warning Sockets not supported on this platform
#undef HAVE_SOCKETS

#else

#define HAVE_SOCKETS

#ifndef _XOPEN_SOURCE_EXTENDED
#define _XOPEN_SOURCE_EXTENDED 1
/* For HP-UX */
#endif

#ifndef BSD_COMP
#define BSD_COMP 1
/* For Solaris */
#endif

#ifndef _ALL_SOURCE
#define _ALL_SOURCE 1
/* For AIX */
#endif

#ifndef _OSF_SOURCE
#define _OSF_SOURCE 1
/* For Tru64 */
#endif

#include <limits.h>
#include <errno.h>

#if defined(__vxworks)
#include <vxWorks.h>
#include <ioLib.h>
#include <hostLib.h>
#if (_WRS_VXWORKS_MAJOR != 6) && ! defined (__RTP__)
#include <resolvLib.h>
#endif
#define SHUT_RD		0
#define SHUT_WR		1
#define SHUT_RDWR	2

#elif defined (WINNT)
#define FD_SETSIZE 1024
#include <windows.h>

#ifdef __MINGW32__
#include <winsock2.h>
#include <ws2tcpip.h>

#undef  EACCES
#define EACCES          WSAEACCES
#undef  EADDRINUSE
#define EADDRINUSE      WSAEADDRINUSE
#undef  EADDRNOTAVAIL
#define EADDRNOTAVAIL   WSAEADDRNOTAVAIL
#undef  EAFNOSUPPORT
#define EAFNOSUPPORT    WSAEAFNOSUPPORT
#undef  EALREADY
#define EALREADY        WSAEALREADY
#undef  EBADF
#define EBADF           WSAEBADF
#undef  ECONNABORTED
#define ECONNABORTED    WSAECONNABORTED
#undef  ECONNREFUSED
#define ECONNREFUSED    WSAECONNREFUSED
#undef  ECONNRESET
#define ECONNRESET      WSAECONNRESET
#undef  EDESTADDRREQ
#define EDESTADDRREQ    WSAEDESTADDRREQ
#undef  EFAULT
#define EFAULT          WSAEFAULT
#undef  EHOSTDOWN
#define EHOSTDOWN       WSAEHOSTDOWN
#undef  EHOSTUNREACH
#define EHOSTUNREACH    WSAEHOSTUNREACH
#undef  EINPROGRESS
#define EINPROGRESS     WSAEINPROGRESS
#undef  EINTR
#define EINTR           WSAEINTR
#undef  EINVAL
#define EINVAL          WSAEINVAL
#undef  EIO
#define EIO             WSAEDISCON
#undef  EISCONN
#define EISCONN         WSAEISCONN
#undef  ELOOP
#define ELOOP           WSAELOOP
#undef  EMFILE
#define EMFILE          WSAEMFILE
#undef  EMSGSIZE
#define EMSGSIZE        WSAEMSGSIZE
#undef  ENAMETOOLONG
#define ENAMETOOLONG    WSAENAMETOOLONG
#undef  ENETDOWN
#define ENETDOWN        WSAENETDOWN
#undef  ENETRESET
#define ENETRESET       WSAENETRESET
#undef  ENETUNREACH
#define ENETUNREACH     WSAENETUNREACH
#undef  ENOBUFS
#define ENOBUFS         WSAENOBUFS
#undef  ENOPROTOOPT
#define ENOPROTOOPT     WSAENOPROTOOPT
#undef  ENOTCONN
#define ENOTCONN        WSAENOTCONN
#undef  ENOTSOCK
#define ENOTSOCK        WSAENOTSOCK
#undef  EOPNOTSUPP
#define EOPNOTSUPP      WSAEOPNOTSUPP
#undef  EPFNOSUPPORT
#define EPFNOSUPPORT    WSAEPFNOSUPPORT
#undef  EPROTONOSUPPORT
#define EPROTONOSUPPORT WSAEPROTONOSUPPORT
#undef  EPROTOTYPE
#define EPROTOTYPE      WSAEPROTOTYPE
#undef  ESHUTDOWN
#define ESHUTDOWN       WSAESHUTDOWN
#undef  ESOCKTNOSUPPORT
#define ESOCKTNOSUPPORT WSAESOCKTNOSUPPORT
#undef  ETIMEDOUT
#define ETIMEDOUT       WSAETIMEDOUT
#undef  ETOOMANYREFS
#define ETOOMANYREFS    WSAETOOMANYREFS
#undef  EWOULDBLOCK
#define EWOULDBLOCK     WSAEWOULDBLOCK

#define SHUT_RD		SD_RECEIVE
#define SHUT_WR		SD_SEND
#define SHUT_RDWR	SD_BOTH

#endif

#elif defined(VMS)
#define FD_SETSIZE 4096
#ifndef IN_RTS
/* These DEC C headers are not available when building with GCC */
#include <in.h>
#include <tcp.h>
#include <ioctl.h>
#include <netdb.h>
#endif

#endif

#if defined (__vxworks) && ! defined (__RTP__)
#include <sys/times.h>
#else
#include <sys/time.h>
#endif

/*
 * RTEMS has these .h files but not until you have built RTEMS.  When
 * IN_RTS, you only have the .h files in the newlib C library.
 * Because this file is also included from gen-soccon.c which is built
 * to run on RTEMS (not IN_RTS), we must distinguish between IN_RTS
 * and using this file to compile gen-soccon.
 */
#if !(defined (VMS) || defined (__MINGW32__) || \
      (defined(__rtems__) && defined(IN_RTS)))
#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/tcp.h>
#include <sys/ioctl.h>
#include <netdb.h>
#endif

/*
 * Handling of gethostbyname, gethostbyaddr, getservbyname and getservbyport
 * =========================================================================
 *
 * The default implementation of GNAT.Sockets.Thin requires that these
 * operations be either thread safe, or that a reentrant version getXXXbyYYY_r
 * be provided. In both cases, socket.c provides a __gnat_safe_getXXXbyYYY
 * function with the same signature as getXXXbyYYY_r. If the operating
 * system version of getXXXbyYYY is thread safe, the provided auxiliary
 * buffer argument is unused and ignored.
 *
 * Target specific versions of GNAT.Sockets.Thin for platforms that can't
 * fulfill these requirements must provide their own protection mechanism
 * in Safe_GetXXXbyYYY, and if they require GNAT.Sockets to provide a buffer
 * to this effect, then we need to set Need_Netdb_Buffer here (case of
 * VxWorks and VMS).
 */

#if defined (_AIX) || defined (__FreeBSD__) || defined (__hpux__) || defined (__osf__) || defined (_WIN32) || defined (__APPLE__)
# define HAVE_THREAD_SAFE_GETxxxBYyyy 1
#elif defined (sgi) || defined (linux) || defined (__GLIBC__) || (defined (sun) && defined (__SVR4) && !defined (__vxworks)) || defined(__rtems__)
# define HAVE_GETxxxBYyyy_R 1
#endif

#if defined (HAVE_GETxxxBYyyy_R) || !defined (HAVE_THREAD_SAFE_GETxxxBYyyy)
# define Need_Netdb_Buffer 1
#else
# define Need_Netdb_Buffer 0
#endif

#if defined (__FreeBSD__) || defined (__vxworks) || defined(__rtems__)
# define Has_Sockaddr_Len 1
#else
# define Has_Sockaddr_Len 0
#endif

#endif /* defined(__nucleus__) */