projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| 4ba74a35 | 1 | /* Test program for bad DES salt detection in crypt. |
| 2b778ceb | 2 | Copyright (C) 2012-2021 Free Software Foundation, Inc. |
| 4ba74a35 AO |
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 | |
| 5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
| 4ba74a35 AO |
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 | ||
| 650ba77a IM |
64 | /* Mark cd as initialized before first call to crypt_r. */ |
| 65 | cd.initialized = 0; | |
| 66 | ||
| 4ba74a35 AO |
67 | for (size_t i = 0; i < n; i++) |
| 68 | { | |
| 69 | if (crypt (tests[i][0], tests[i][1])) | |
| 70 | { | |
| 71 | result++; | |
| 72 | printf ("%s: crypt returned non-NULL with salt \"%s\"\n", | |
| 73 | tests[i][0], tests[i][1]); | |
| 74 | } | |
| 75 | ||
| 76 | if (crypt_r (tests[i][0], tests[i][1], &cd)) | |
| 77 | { | |
| 78 | result++; | |
| 79 | printf ("%s: crypt_r returned non-NULL with salt \"%s\"\n", | |
| 80 | tests[i][0], tests[i][1]); | |
| 81 | } | |
| 82 | } | |
| 83 | ||
| 84 | return result; | |
| 85 | } | |
| 86 | ||
| 4ba74a35 AO |
87 | #define TEST_FUNCTION do_test () |
| 88 | #include "../test-skeleton.c" |