nss/tst-nss-gai-hv2-canonname.c

   1 /* Test NSS query path for plugins that only implement gethostbyname2
   2    (#30843).
   3    Copyright The GNU Toolchain Authors.
   4    This file is part of the GNU C Library.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library; if not, see
  18    <https://www.gnu.org/licenses/>.  */
  19
  20 #include <nss.h>
  21 #include <netdb.h>
  22 #include <stdlib.h>
  23 #include <string.h>
  24 #include <mcheck.h>
  25 #include <support/check.h>
  26 #include <support/xstdio.h>
  27 #include "nss/tst-nss-gai-hv2-canonname.h"
  28
  29 #define PREPARE do_prepare
  30
  31 static void do_prepare (int a, char **av)
  32 {
  33   FILE *hosts = xfopen ("/etc/hosts", "w");
  34   for (unsigned i = 2; i < 255; i++)
  35     {
  36       fprintf (hosts, "ff01::ff02:ff03:%u:2\ttest.example.com\n", i);
  37       fprintf (hosts, "192.168.0.%u\ttest.example.com\n", i);
  38     }
  39   xfclose (hosts);
  40 }
  41
  42 static int
  43 do_test (void)
  44 {
  45   mtrace ();
  46
  47   __nss_configure_lookup ("hosts", "test_gai_hv2_canonname");
  48
  49   struct addrinfo hints = {};
  50   struct addrinfo *result = NULL;
  51
  52   hints.ai_family = AF_INET6;
  53   hints.ai_flags = AI_ALL | AI_V4MAPPED | AI_CANONNAME;
  54
  55   int ret = getaddrinfo (QUERYNAME, NULL, &hints, &result);
  56
  57   if (ret != 0)
  58     FAIL_EXIT1 ("getaddrinfo failed: %s\n", gai_strerror (ret));
  59
  60   TEST_COMPARE_STRING (result->ai_canonname, QUERYNAME);
  61
  62   freeaddrinfo(result);
  63   return 0;
  64 }
  65
  66 #include <support/test-driver.c>