xref: /third_party/openssl/test/gmdifftest.c (revision e1051a39)
1/*
2 * Copyright 2015-2021 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the Apache License 2.0 (the "License").  You may not use
5 * this file except in compliance with the License.  You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10#include <openssl/crypto.h>
11
12#include "testutil.h"
13
14#define SECS_PER_DAY (24 * 60 * 60)
15
16/*
17 * Time checking test code. Check times are identical for a wide range of
18 * offsets. This should be run on a machine with 64 bit time_t or it will
19 * trigger the very errors the routines fix.
20 */
21
22static int check_time(long offset)
23{
24    struct tm tm1, tm2, o1;
25    int off_day, off_sec;
26    long toffset;
27    time_t t1, t2;
28
29    time(&t1);
30
31    t2 = t1 + offset;
32    OPENSSL_gmtime(&t2, &tm2);
33    OPENSSL_gmtime(&t1, &tm1);
34    o1 = tm1;
35    if (!TEST_true(OPENSSL_gmtime_adj(&tm1, 0, offset))
36        || !TEST_int_eq(tm1.tm_year, tm2.tm_year)
37        || !TEST_int_eq(tm1.tm_mon, tm2.tm_mon)
38        || !TEST_int_eq(tm1.tm_mday, tm2.tm_mday)
39        || !TEST_int_eq(tm1.tm_hour, tm2.tm_hour)
40        || !TEST_int_eq(tm1.tm_min, tm2.tm_min)
41        || !TEST_int_eq(tm1.tm_sec, tm2.tm_sec)
42        || !TEST_true(OPENSSL_gmtime_diff(&off_day, &off_sec, &o1, &tm1)))
43        return 0;
44    toffset = (long)off_day * SECS_PER_DAY + off_sec;
45    if (!TEST_long_eq(offset, toffset))
46        return 0;
47    return 1;
48}
49
50static int test_gmtime(int offset)
51{
52    return check_time(offset)
53           && check_time(-offset)
54           && check_time(offset * 1000L)
55           && check_time(-offset * 1000L)
56           && check_time(offset * 1000000L)
57           && check_time(-offset * 1000000L);
58}
59
60int setup_tests(void)
61{
62    if (sizeof(time_t) < 8)
63        TEST_info("Skipping; time_t is less than 64-bits");
64    else
65        ADD_ALL_TESTS_NOSUBTEST(test_gmtime, 1000);
66    return 1;
67}
68