1/*
2 * Copyright 1995-2017 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/*
11 * GENERALIZEDTIME implementation. Based on UTCTIME
12 */
13
14#include <stdio.h>
15#include <time.h>
16#include "internal/cryptlib.h"
17#include <openssl/asn1.h>
18#include "asn1_local.h"
19
20/* This is the primary function used to parse ASN1_GENERALIZEDTIME */
21int asn1_generalizedtime_to_tm(struct tm *tm, const ASN1_GENERALIZEDTIME *d)
22{
23 /* wrapper around asn1_time_to_tm */
24 if (d->type != V_ASN1_GENERALIZEDTIME)
25 return 0;
26 return asn1_time_to_tm(tm, d);
27}
28
29int ASN1_GENERALIZEDTIME_check(const ASN1_GENERALIZEDTIME *d)
30{
31 return asn1_generalizedtime_to_tm(NULL, d);
32}
33
34int ASN1_GENERALIZEDTIME_set_string(ASN1_GENERALIZEDTIME *s, const char *str)
35{
36 ASN1_GENERALIZEDTIME t;
37
38 t.type = V_ASN1_GENERALIZEDTIME;
39 t.length = strlen(str);
40 t.data = (unsigned char *)str;
41 t.flags = 0;
42
43 if (!ASN1_GENERALIZEDTIME_check(&t))
44 return 0;
45
46 if (s != NULL && !ASN1_STRING_copy(s, &t))
47 return 0;
48
49 return 1;
50}
51
52ASN1_GENERALIZEDTIME *ASN1_GENERALIZEDTIME_set(ASN1_GENERALIZEDTIME *s,
53 time_t t)
54{
55 return ASN1_GENERALIZEDTIME_adj(s, t, 0, 0);
56}
57
58ASN1_GENERALIZEDTIME *ASN1_GENERALIZEDTIME_adj(ASN1_GENERALIZEDTIME *s,
59 time_t t, int offset_day,
60 long offset_sec)
61{
62 struct tm *ts;
63 struct tm data;
64
65 ts = OPENSSL_gmtime(&t, &data);
66 if (ts == NULL)
67 return NULL;
68
69 if (offset_day || offset_sec) {
70 if (!OPENSSL_gmtime_adj(ts, offset_day, offset_sec))
71 return NULL;
72 }
73
74 return asn1_time_from_tm(s, ts, V_ASN1_GENERALIZEDTIME);
75}
76
77int ASN1_GENERALIZEDTIME_print(BIO *bp, const ASN1_GENERALIZEDTIME *tm)
78{
79 if (tm->type != V_ASN1_GENERALIZEDTIME)
80 return 0;
81 return ASN1_TIME_print(bp, tm);
82}
83