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#include <stdio.h>
11#include <time.h>
12#include "internal/cryptlib.h"
13#include <openssl/asn1.h>
14#include "asn1_local.h"
15
16/* This is the primary function used to parse ASN1_UTCTIME */
17int asn1_utctime_to_tm(struct tm *tm, const ASN1_UTCTIME *d)
18{
19 /* wrapper around asn1_time_to_tm */
20 if (d->type != V_ASN1_UTCTIME)
21 return 0;
22 return asn1_time_to_tm(tm, d);
23}
24
25int ASN1_UTCTIME_check(const ASN1_UTCTIME *d)
26{
27 return asn1_utctime_to_tm(NULL, d);
28}
29
30/* Sets the string via simple copy without cleaning it up */
31int ASN1_UTCTIME_set_string(ASN1_UTCTIME *s, const char *str)
32{
33 ASN1_UTCTIME t;
34
35 t.type = V_ASN1_UTCTIME;
36 t.length = strlen(str);
37 t.data = (unsigned char *)str;
38 t.flags = 0;
39
40 if (!ASN1_UTCTIME_check(&t))
41 return 0;
42
43 if (s != NULL && !ASN1_STRING_copy(s, &t))
44 return 0;
45
46 return 1;
47}
48
49ASN1_UTCTIME *ASN1_UTCTIME_set(ASN1_UTCTIME *s, time_t t)
50{
51 return ASN1_UTCTIME_adj(s, t, 0, 0);
52}
53
54ASN1_UTCTIME *ASN1_UTCTIME_adj(ASN1_UTCTIME *s, time_t t,
55 int offset_day, long offset_sec)
56{
57 struct tm *ts;
58 struct tm data;
59
60 ts = OPENSSL_gmtime(&t, &data);
61 if (ts == NULL)
62 return NULL;
63
64 if (offset_day || offset_sec) {
65 if (!OPENSSL_gmtime_adj(ts, offset_day, offset_sec))
66 return NULL;
67 }
68
69 return asn1_time_from_tm(s, ts, V_ASN1_UTCTIME);
70}
71
72int ASN1_UTCTIME_cmp_time_t(const ASN1_UTCTIME *s, time_t t)
73{
74 struct tm stm, ttm;
75 int day, sec;
76
77 if (!asn1_utctime_to_tm(&stm, s))
78 return -2;
79
80 if (OPENSSL_gmtime(&t, &ttm) == NULL)
81 return -2;
82
83 if (!OPENSSL_gmtime_diff(&day, &sec, &ttm, &stm))
84 return -2;
85
86 if (day > 0 || sec > 0)
87 return 1;
88 if (day < 0 || sec < 0)
89 return -1;
90 return 0;
91}
92
93int ASN1_UTCTIME_print(BIO *bp, const ASN1_UTCTIME *tm)
94{
95 if (tm->type != V_ASN1_UTCTIME)
96 return 0;
97 return ASN1_TIME_print(bp, tm);
98}
99