/* Parse /etc/hosts in multi mode with a trailing long line (bug 21915).

   Copyright (C) 2017-2018 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 <dlfcn.h>

#include <errno.h>

#include <gnu/lib-names.h>

#include <netdb.h>

#include <nss.h>

#include <support/check.h>

#include <support/check_nss.h>

#include <support/namespace.h>

#include <support/test-driver.h>

#include <support/xunistd.h>

struct support_chroot *chroot_env;

#define X10 "XXXXXXXXXX"

#define X100 X10 X10 X10 X10 X10 X10 X10 X10 X10 X10

#define X1000 X100 X100 X100 X100 X100 X100 X100 X100 X100 X100

static void

prepare (int argc, char **argv)

{

  chroot_env = support_chroot_create

    ((struct support_chroot_configuration)

     {

       .resolv_conf = "",

       .hosts =

         "127.0.0.1   localhost localhost.localdomain\n"

         "::1         localhost localhost.localdomain\n"

         "192.0.2.1   example.com\n"

         "#" X1000 X100 "\n",

       .host_conf = "multi on\n",

     });

}

static int

do_test (void)

{

  support_become_root ();

  if (!support_can_chroot ())

    return EXIT_UNSUPPORTED;

  __nss_configure_lookup ("hosts", "files");

  if (dlopen (LIBNSS_FILES_SO, RTLD_LAZY) == NULL)

    FAIL_EXIT1 ("could not load " LIBNSS_DNS_SO ": %s", dlerror ());

  xchroot (chroot_env->path_chroot);

  errno = ERANGE;

  h_errno = NETDB_INTERNAL;

  check_hostent ("gethostbyname example.com",

                 gethostbyname ("example.com"),

                 "name: example.com\n"

                 "address: 192.0.2.1\n");

  errno = ERANGE;

  h_errno = NETDB_INTERNAL;

  check_hostent ("gethostbyname2 AF_INET example.com",

                 gethostbyname2 ("example.com", AF_INET),

                 "name: example.com\n"

                 "address: 192.0.2.1\n");

  {

    struct addrinfo hints =

      {

        .ai_family = AF_UNSPEC,

        .ai_socktype = SOCK_STREAM,

        .ai_protocol = IPPROTO_TCP,

      };

    errno = ERANGE;

    h_errno = NETDB_INTERNAL;

    struct addrinfo *ai;

    int ret = getaddrinfo ("example.com", "80", &hints, &ai;;

    check_addrinfo ("example.com AF_UNSPEC", ai, ret,

                    "address: STREAM/TCP 192.0.2.1 80\n");

    if (ret == 0)

      freeaddrinfo (ai);

    hints.ai_family = AF_INET;

    errno = ERANGE;

    h_errno = NETDB_INTERNAL;

    ret = getaddrinfo ("example.com", "80", &hints, &ai;;

    check_addrinfo ("example.com AF_INET", ai, ret,

                    "address: STREAM/TCP 192.0.2.1 80\n");

    if (ret == 0)

      freeaddrinfo (ai);

  }

  support_chroot_free (chroot_env);

  return 0;

}

#define PREPARE prepare

#include <support/test-driver.c>