1/* Test __nss_hash
2 Copyright (C) 2022-2024 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 <https://www.gnu.org/licenses/>. */
18
19#include <support/support.h>
20#include <support/check.h>
21#include <stdio.h>
22#include <string.h>
23#include <stdlib.h>
24#include <nss.h>
25#include <simple-nss-hash.h>
26
27uint32_t __nss_hash (const void *__key, size_t __length);
28
29static int
30do_fill_tests (size_t len, int fill)
31{
32 uint32_t expec, res;
33 char buf[len];
34 memset (buf, fill, len);
35
36 expec = __simple_nss_hash (keyarg: buf, len);
37 res = __nss_hash (key: buf, length: len);
38 if (expec != res)
39 FAIL_EXIT1 ("FAIL: fill(%d) (%zu), %x != %x\n", fill, len, expec, res);
40
41 return 0;
42}
43
44static int
45do_rand_tests (size_t len)
46{
47 uint32_t expec, res;
48 size_t i;
49 char buf[len];
50 for (i = 0; i < len; ++i)
51 buf[i] = random ();
52
53 expec = __simple_nss_hash (keyarg: buf, len);
54 res = __nss_hash (key: buf, length: len);
55 if (expec != res)
56 FAIL_EXIT1 ("FAIL: random (%zu), %x != %x\n", len, expec, res);
57
58 return 0;
59}
60
61static int
62do_test (void)
63{
64 size_t i, j;
65 for (i = 0; i < 100; ++i)
66 {
67 for (j = 0; j < 8192; ++j)
68 {
69 if (do_rand_tests (len: i))
70 return 1;
71
72 if (do_fill_tests (len: i, fill: -1) || do_fill_tests (len: i, fill: 1)
73 || do_fill_tests (len: i, fill: 0x80) || do_fill_tests (len: i, fill: 0x88))
74 return 1;
75 }
76 }
77 return 0;
78}
79
80#include <support/test-driver.c>
81

source code of glibc/nss/tst-nss-hash.c