posix/tst-getaddrinfo4.c

   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"