mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-23 17:53:37 +08:00
87 lines
2.3 KiB
C
87 lines
2.3 KiB
C
/* Test program for bad DES salt detection in crypt.
|
|
Copyright (C) 2012-2016 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];
|
|
}
|
|
|
|
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"
|