| xf.li | bdd93d5 | 2023-05-12 07:10:14 -0700 | [diff] [blame] | 1 | /* Test program for bad DES salt detection in crypt. |
| 2 | Copyright (C) 2012-2016 Free Software Foundation, Inc. |
| 3 | This file is part of the GNU C Library. |
| 4 | |
| 5 | The GNU C Library is free software; you can redistribute it and/or |
| 6 | modify it under the terms of the GNU Lesser General Public |
| 7 | License as published by the Free Software Foundation; either |
| 8 | version 2.1 of the License, or (at your option) any later version. |
| 9 | |
| 10 | The GNU C Library is distributed in the hope that it will be useful, |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 13 | Lesser General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU Lesser General Public |
| 16 | License along with the GNU C Library; if not, see |
| 17 | <http://www.gnu.org/licenses/>. */ |
| 18 | |
| 19 | #include <stdio.h> |
| 20 | #include <unistd.h> |
| 21 | #include <sys/mman.h> |
| 22 | #include <crypt.h> |
| 23 | |
| 24 | static const char *tests[][2] = |
| 25 | { |
| 26 | { "no salt", "" }, |
| 27 | { "single char", "/" }, |
| 28 | { "first char bad", "!x" }, |
| 29 | { "second char bad", "Z%" }, |
| 30 | { "both chars bad", ":@" }, |
| 31 | { "un$upported algorithm", "$2$" }, |
| 32 | { "unsupported_algorithm", "_1" }, |
| 33 | { "end of page", NULL } |
| 34 | }; |
| 35 | |
| 36 | static int |
| 37 | do_test (void) |
| 38 | { |
| 39 | int result = 0; |
| 40 | struct crypt_data cd; |
| 41 | size_t n = sizeof (tests) / sizeof (*tests); |
| 42 | size_t pagesize = (size_t) sysconf (_SC_PAGESIZE); |
| 43 | char *page; |
| 44 | |
| 45 | /* Check that crypt won't look at the second character if the first |
| 46 | one is invalid. */ |
| 47 | page = mmap (NULL, pagesize * 2, PROT_READ | PROT_WRITE, |
| 48 | MAP_PRIVATE | MAP_ANON, -1, 0); |
| 49 | if (page == MAP_FAILED) |
| 50 | { |
| 51 | perror ("mmap"); |
| 52 | n--; |
| 53 | } |
| 54 | else |
| 55 | { |
| 56 | if (mmap (page + pagesize, pagesize, 0, |
| 57 | MAP_PRIVATE | MAP_ANON | MAP_FIXED, |
| 58 | -1, 0) != page + pagesize) |
| 59 | perror ("mmap 2"); |
| 60 | page[pagesize - 1] = '*'; |
| 61 | tests[n - 1][1] = &page[pagesize - 1]; |
| 62 | } |
| 63 | |
| 64 | for (size_t i = 0; i < n; i++) |
| 65 | { |
| 66 | if (crypt (tests[i][0], tests[i][1])) |
| 67 | { |
| 68 | result++; |
| 69 | printf ("%s: crypt returned non-NULL with salt \"%s\"\n", |
| 70 | tests[i][0], tests[i][1]); |
| 71 | } |
| 72 | |
| 73 | if (crypt_r (tests[i][0], tests[i][1], &cd)) |
| 74 | { |
| 75 | result++; |
| 76 | printf ("%s: crypt_r returned non-NULL with salt \"%s\"\n", |
| 77 | tests[i][0], tests[i][1]); |
| 78 | } |
| 79 | } |
| 80 | |
| 81 | return result; |
| 82 | } |
| 83 | |
| 84 | #define TIMEOUT 5 |
| 85 | #define TEST_FUNCTION do_test () |
| 86 | #include "../test-skeleton.c" |