1  /* Test getaddrinfo return value, [BZ #15339].
       2     Copyright (C) 2013-2023 Free Software Foundation, Inc.
       3     This file is part of the GNU C Library.
       4  
       5     The GNU C Library is free software; you can redistribute it and/or
       6     modify it under the terms of the GNU Lesser General Public
       7     License as published by the Free Software Foundation; either
       8     version 2.1 of the License, or (at your option) any later version.
       9  
      10     The GNU C Library is distributed in the hope that it will be useful,
      11     but WITHOUT ANY WARRANTY; without even the implied warranty of
      12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      13     Lesser General Public License for more details.
      14  
      15     You should have received a copy of the GNU Lesser General Public
      16     License along with the GNU C Library; if not, see
      17     <https://www.gnu.org/licenses/>.  */
      18  
      19  #include <string.h>
      20  #include <stdio.h>
      21  #include <errno.h>
      22  #include <netdb.h>
      23  
      24  static int
      25  try (const char *service, int family, int flags)
      26  {
      27    struct addrinfo hints, *h, *ai;
      28    int res;
      29  
      30    memset (&hints, 0, sizeof hints);
      31    hints.ai_family = family;
      32    hints.ai_flags = flags;
      33  
      34    errno = 0;
      35    h = (family || flags) ? &hints : NULL;
      36    res = getaddrinfo ("example.net", service, h, &ai);
      37    switch (res)
      38      {
      39      case 0:
      40      case EAI_AGAIN:
      41      case EAI_NONAME:
      42        printf ("SUCCESS getaddrinfo(service=%s, family=%d, flags=%d): %s: %m\n",
      43                service ?: "NULL", family, flags, gai_strerror (res));
      44        return 0;
      45      }
      46    printf ("FAIL getaddrinfo(service=%s, family=%d, flags=%d): %s: %m\n",
      47            service ?: "NULL", family, flags, gai_strerror (res));
      48    return 1;
      49  }
      50  
      51  static int
      52  do_test (void)
      53  {
      54    int err = 0;
      55    err |= try (NULL, 0, 0);
      56    err |= try (NULL, AF_UNSPEC, AI_ADDRCONFIG);
      57    err |= try (NULL, AF_INET, 0);
      58    err |= try (NULL, AF_INET6, 0);
      59    err |= try ("http", 0, 0);
      60    err |= try ("http", AF_UNSPEC, AI_ADDRCONFIG);
      61    err |= try ("http", AF_INET, 0);
      62    err |= try ("http", AF_INET6, 0);
      63    return err;
      64  }
      65  
      66  #define TEST_FUNCTION do_test ()
      67  #include "../test-skeleton.c"