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87 lines
2.3 KiB
C
87 lines
2.3 KiB
C
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/* Test program for bad DES salt detection in crypt.
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Copyright (C) 2012 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <stdio.h>
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#include <unistd.h>
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#include <sys/mman.h>
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#include <crypt.h>
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static const char *tests[][2] =
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{
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{ "no salt", "" },
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{ "single char", "/" },
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{ "first char bad", "!x" },
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{ "second char bad", "Z%" },
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{ "both chars bad", ":@" },
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{ "un$upported algorithm", "$2$" },
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{ "unsupported_algorithm", "_1" },
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{ "end of page", NULL }
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};
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static int
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do_test (void)
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{
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int result = 0;
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struct crypt_data cd;
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size_t n = sizeof (tests) / sizeof (*tests);
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size_t pagesize = (size_t) sysconf (_SC_PAGESIZE);
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char *page;
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/* Check that crypt won't look at the second character if the first
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one is invalid. */
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page = mmap (NULL, pagesize * 2, PROT_READ | PROT_WRITE,
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MAP_PRIVATE | MAP_ANON, -1, 0);
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if (page == MAP_FAILED)
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{
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perror ("mmap");
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n--;
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}
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else
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{
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if (mmap (page + pagesize, pagesize, 0,
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MAP_PRIVATE | MAP_ANON | MAP_FIXED,
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-1, 0) != page + pagesize)
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perror ("mmap 2");
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page[pagesize - 1] = '*';
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tests[n - 1][1] = &page[pagesize - 1];
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}
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for (size_t i = 0; i < n; i++)
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{
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if (crypt (tests[i][0], tests[i][1]))
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{
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result++;
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printf ("%s: crypt returned non-NULL with salt \"%s\"\n",
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tests[i][0], tests[i][1]);
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}
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if (crypt_r (tests[i][0], tests[i][1], &cd))
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{
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result++;
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printf ("%s: crypt_r returned non-NULL with salt \"%s\"\n",
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tests[i][0], tests[i][1]);
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}
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}
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return result;
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}
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#define TIMEOUT 5
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#define TEST_FUNCTION do_test ()
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#include "../test-skeleton.c"
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