/* Test program for bad DES salt detection in crypt.

   Copyright (C) 2012-2018 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 <stdio.h>

#include <unistd.h>

#include <sys/mman.h>

#include <crypt.h>

static const char *tests[][2] =

  {

    { "no salt", "" },

    { "single char", "/" },

    { "first char bad", "!x" },

    { "second char bad", "Z%" },

    { "both chars bad", ":@" },

    { "un$upported algorithm", "$2$" },

    { "unsupported_algorithm", "_1" },

    { "end of page", NULL }

  };

static int

do_test (void)

{

  int result = 0;

  struct crypt_data cd;

  size_t n = sizeof (tests) / sizeof (*tests);

  size_t pagesize = (size_t) sysconf (_SC_PAGESIZE);

  char *page;

  /* Check that crypt won't look at the second character if the first

     one is invalid.  */

  page = mmap (NULL, pagesize * 2, PROT_READ | PROT_WRITE,

	       MAP_PRIVATE | MAP_ANON, -1, 0);

  if (page == MAP_FAILED)

    {

      perror ("mmap");

      n--;

    }

  else

    {

      if (mmap (page + pagesize, pagesize, 0,

		MAP_PRIVATE | MAP_ANON | MAP_FIXED,

		-1, 0) != page + pagesize)

	perror ("mmap 2");

      page[pagesize - 1] = '*';

      tests[n - 1][1] = &page[pagesize - 1];

    }

  /* Mark cd as initialized before first call to crypt_r.  */

  cd.initialized = 0;

  for (size_t i = 0; i < n; i++)

    {

      if (crypt (tests[i][0], tests[i][1]))

	{

	  result++;

	  printf ("%s: crypt returned non-NULL with salt \"%s\"\n",

		  tests[i][0], tests[i][1]);

	}

      if (crypt_r (tests[i][0], tests[i][1], &cd))

	{

	  result++;

	  printf ("%s: crypt_r returned non-NULL with salt \"%s\"\n",

		  tests[i][0], tests[i][1]);

	}

    }

  return result;

}

#define TIMEOUT 5

#define TEST_FUNCTION do_test ()

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