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      1 /*
      2  * Copyright 2015-2017 The OpenSSL Project Authors. All Rights Reserved.
      3  *
      4  * Licensed under the OpenSSL license (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 
     22 static 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     OPENSSL_gmtime_adj(&tm1, 0, offset);
     36     if (!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 
     50 static 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 }
     57 
     58 int setup_tests(void)
     59 {
     60     if (sizeof(time_t) < 8)
     61         TEST_info("Skipping; time_t is less than 64-bits");
     62     else
     63         ADD_ALL_TESTS_NOSUBTEST(test_gmtime, 1000000);
     64     return 1;
     65 }
     66