/* Test listing of network interface addresses.

   Copyright (C) 2002-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or

   modify it under the terms of the GNU Lesser General Public

   License as published by the Free Software Foundation; either

   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library 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

   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public

   License along with the GNU C Library; if not, see

   <http://www.gnu.org/licenses/>.  */

#include <errno.h>

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <ifaddrs.h>

#include <netinet/in.h>

#include <arpa/inet.h>

static int failures;

static const char *

addr_string (struct sockaddr *sa, char *buf, size_t size)

{

  if (sa == NULL)

    return "<none>";

  switch (sa->sa_family)

    {

    case AF_INET:

      return inet_ntop (AF_INET, &((struct sockaddr_in *) sa)->sin_addr,

			buf, size);

    case AF_INET6:

      return inet_ntop (AF_INET6, &((struct sockaddr_in6 *) sa)->sin6_addr,

			buf, size);

#ifdef AF_LINK

    case AF_LINK:

      return "<link>";

#endif

    case AF_UNSPEC:

      return "---";

#ifdef AF_PACKET

    case AF_PACKET:

      return "<packet>";

#endif

    default:

      ++failures;

      printf ("sa_family=%d %08x\n", sa->sa_family,

	      *(int*)&((struct sockaddr_in *) sa)->sin_addr.s_addr);

      return "<unexpected sockaddr family>";

    }

}

static int

do_test (void)

{

  struct ifaddrs *ifaces, *ifa;

  if (getifaddrs (&ifaces) < 0)

    {

      if (errno != ENOSYS)

	{

	  printf ("Couldn't get any interfaces: %s.\n", strerror (errno));

	  exit (1);

	}

      /* The function is simply not implemented.  */

      exit (0);

    }

  puts ("\

Name           Flags   Address         Netmask         Broadcast/Destination");

  for (ifa = ifaces; ifa != NULL; ifa = ifa->ifa_next)

    {

      char abuf[64], mbuf[64], dbuf[64];

      printf ("%-15s%#.4x  %-15s %-15s %-15s\n",

	      ifa->ifa_name, ifa->ifa_flags,

	      addr_string (ifa->ifa_addr, abuf, sizeof (abuf)),

	      addr_string (ifa->ifa_netmask, mbuf, sizeof (mbuf)),

	      addr_string (ifa->ifa_broadaddr, dbuf, sizeof (dbuf)));

    }

  freeifaddrs (ifaces);

  return failures ? 1 : 0;

}

#define TEST_FUNCTION do_test ()

#include "../test-skeleton.c"