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4ba74a35 | 1 | /* Test program for bad DES salt detection in crypt. |
688903eb | 2 | Copyright (C) 2012-2018 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 | |
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 | ||
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 | ||
87 | #define TIMEOUT 5 | |
88 | #define TEST_FUNCTION do_test () | |
89 | #include "../test-skeleton.c" |