1 | /* Testcase for https://sourceware.org/bugzilla/show_bug.cgi?id=14090. |
2 | Copyright (C) 2012-2022 Free Software Foundation, Inc. |
3 | This file is part of the GNU C Library. |
4 | |
5 | This program is free software; you can redistribute it and/or modify |
6 | it under the terms of the GNU General Public License as published |
7 | by the Free Software Foundation; version 2 of the License, or |
8 | (at your option) any later version. |
9 | |
10 | This program 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 |
13 | GNU General Public License for more details. |
14 | |
15 | You should have received a copy of the GNU General Public License |
16 | along with this program; if not, see <https://www.gnu.org/licenses/>. */ |
17 | |
18 | #include <stdint.h> |
19 | #include <stdio.h> |
20 | #include <stdlib.h> |
21 | #include <string.h> |
22 | #include <sys/mman.h> |
23 | |
24 | #include "md5.h" |
25 | |
26 | /* This test will not work with 32-bit size_t, so let it succeed |
27 | there. */ |
28 | #if SIZE_MAX <= UINT32_MAX |
29 | static int |
30 | do_test (void) |
31 | { |
32 | return 0; |
33 | } |
34 | #else |
35 | |
36 | # define CONST_2G 0x080000000 |
37 | # define CONST_10G 0x280000000 |
38 | |
39 | /* MD5 sum values of zero-filled blocks of specified sizes. */ |
40 | static const struct test_data_s |
41 | { |
42 | const char ref[16]; |
43 | size_t len; |
44 | } test_data[] = |
45 | { |
46 | { "\xd4\x1d\x8c\xd9\x8f\x00\xb2\x04\xe9\x80\x09\x98\xec\xf8\x42\x7e" , |
47 | 0x000000000 }, |
48 | { "\xa9\x81\x13\x0c\xf2\xb7\xe0\x9f\x46\x86\xdc\x27\x3c\xf7\x18\x7e" , |
49 | 0x080000000 }, |
50 | { "\xc9\xa5\xa6\x87\x8d\x97\xb4\x8c\xc9\x65\xc1\xe4\x18\x59\xf0\x34" , |
51 | 0x100000000 }, |
52 | { "\x58\xcf\x63\x8a\x73\x3f\x91\x90\x07\xb4\x28\x7c\xf5\x39\x6d\x0c" , |
53 | 0x180000000 }, |
54 | { "\xb7\x70\x35\x1f\xad\xae\x5a\x96\xbb\xaf\x97\x02\xed\x97\xd2\x8d" , |
55 | 0x200000000 }, |
56 | { "\x2d\xd2\x6c\x4d\x47\x99\xeb\xd2\x9f\xa3\x1e\x48\xd4\x9e\x8e\x53" , |
57 | 0x280000000 }, |
58 | }; |
59 | |
60 | static int |
61 | report (const char *id, const char *md5, size_t len, const char *ref) |
62 | { |
63 | if (memcmp (s1: md5, s2: ref, n: 16)) |
64 | { |
65 | printf (format: "test %s with size %zd failed\n" , id, len); |
66 | return 1; |
67 | } |
68 | return 0; |
69 | } |
70 | |
71 | /* Test md5 in a single md5_process_bytes call. */ |
72 | static int |
73 | test_single (void *buf, size_t len, const char *ref) |
74 | { |
75 | char sum[16]; |
76 | struct md5_ctx ctx; |
77 | |
78 | __md5_init_ctx (ctx: &ctx); |
79 | __md5_process_bytes (buffer: buf, len, ctx: &ctx); |
80 | __md5_finish_ctx (ctx: &ctx, resbuf: sum); |
81 | |
82 | return report (id: "single" , md5: sum, len, ref); |
83 | } |
84 | |
85 | /* Test md5 with two md5_process_bytes calls to trigger a |
86 | different path in md5_process_block for sizes > 2 GB. */ |
87 | static int |
88 | test_double (void *buf, size_t len, const char *ref) |
89 | { |
90 | char sum[16]; |
91 | struct md5_ctx ctx; |
92 | |
93 | __md5_init_ctx (ctx: &ctx); |
94 | if (len >= CONST_2G) |
95 | { |
96 | __md5_process_bytes (buffer: buf, CONST_2G, ctx: &ctx); |
97 | __md5_process_bytes (buffer: buf + CONST_2G, len: len - CONST_2G, ctx: &ctx); |
98 | } |
99 | else |
100 | __md5_process_bytes (buffer: buf, len, ctx: &ctx); |
101 | |
102 | __md5_finish_ctx (ctx: &ctx, resbuf: sum); |
103 | |
104 | return report (id: "double" , md5: sum, len, ref); |
105 | } |
106 | |
107 | |
108 | static int |
109 | do_test (void) |
110 | { |
111 | void *buf; |
112 | unsigned int j; |
113 | int result = 0; |
114 | |
115 | buf = mmap64 (addr: 0, CONST_10G, PROT_READ, MAP_ANONYMOUS | MAP_PRIVATE, fd: -1, offset: 0); |
116 | if (buf == MAP_FAILED) |
117 | { |
118 | puts (s: "Could not allocate 10 GB via mmap, skipping test." ); |
119 | return 0; |
120 | } |
121 | |
122 | for (j = 0; j < sizeof (test_data) / sizeof (struct test_data_s); j++) |
123 | { |
124 | if (test_single (buf, len: test_data[j].len, ref: test_data[j].ref)) |
125 | result = 1; |
126 | if (test_double (buf, len: test_data[j].len, ref: test_data[j].ref)) |
127 | result = 1; |
128 | } |
129 | |
130 | return result; |
131 | } |
132 | #endif |
133 | |
134 | /* This needs on a fast machine 90s. */ |
135 | #define TIMEOUT 480 |
136 | #define TEST_FUNCTION do_test () |
137 | #include "../test-skeleton.c" |
138 | |