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2afece36 | 1 | /* Check two binary blobs for equality. |
581c785b | 2 | Copyright (C) 2018-2022 Free Software Foundation, Inc. |
2afece36 FW |
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/>. */ |
2afece36 FW |
18 | |
19 | #include <stdio.h> | |
20 | #include <stdlib.h> | |
21 | #include <string.h> | |
22 | #include <support/check.h> | |
23 | #include <support/support.h> | |
24 | #include <support/xmemstream.h> | |
25 | ||
26 | static void | |
27 | report_length (const char *what, unsigned long int length, const char *expr) | |
28 | { | |
29 | printf (" %s %lu bytes (from %s)\n", what, length, expr); | |
30 | } | |
31 | ||
32 | static void | |
33 | report_blob (const char *what, const unsigned char *blob, | |
34 | unsigned long int length, const char *expr) | |
35 | { | |
85b0e1e8 FW |
36 | if (blob == NULL && length > 0) |
37 | printf (" %s (evaluated from %s): NULL\n", what, expr); | |
38 | else if (length > 0) | |
2afece36 FW |
39 | { |
40 | printf (" %s (evaluated from %s):\n", what, expr); | |
41 | char *quoted = support_quote_blob (blob, length); | |
42 | printf (" \"%s\"\n", quoted); | |
43 | free (quoted); | |
44 | ||
45 | fputs (" ", stdout); | |
46 | for (unsigned long i = 0; i < length; ++i) | |
47 | printf (" %02X", blob[i]); | |
48 | putc ('\n', stdout); | |
49 | } | |
50 | } | |
51 | ||
52 | void | |
53 | support_test_compare_blob (const void *left, unsigned long int left_length, | |
54 | const void *right, unsigned long int right_length, | |
55 | const char *file, int line, | |
56 | const char *left_expr, const char *left_len_expr, | |
57 | const char *right_expr, const char *right_len_expr) | |
58 | { | |
59 | /* No differences are possible if both lengths are null. */ | |
60 | if (left_length == 0 && right_length == 0) | |
61 | return; | |
62 | ||
63 | if (left_length != right_length || left == NULL || right == NULL | |
64 | || memcmp (left, right, left_length) != 0) | |
65 | { | |
66 | support_record_failure (); | |
67 | printf ("%s:%d: error: blob comparison failed\n", file, line); | |
68 | if (left_length == right_length) | |
69 | printf (" blob length: %lu bytes\n", left_length); | |
70 | else | |
71 | { | |
72 | report_length ("left length: ", left_length, left_len_expr); | |
73 | report_length ("right length:", right_length, right_len_expr); | |
74 | } | |
75 | report_blob ("left", left, left_length, left_expr); | |
76 | report_blob ("right", right, right_length, right_expr); | |
77 | } | |
78 | } |