1 /* $OpenBSD: a_time.c,v 1.37 2023/07/05 21:23:36 beck Exp $ */
2 /* ====================================================================
3 * Copyright (c) 1999 The OpenSSL Project. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 *
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in
14 * the documentation and/or other materials provided with the
15 * distribution.
16 *
17 * 3. All advertising materials mentioning features or use of this
18 * software must display the following acknowledgment:
19 * "This product includes software developed by the OpenSSL Project
20 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
21 *
22 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
23 * endorse or promote products derived from this software without
24 * prior written permission. For written permission, please contact
25 * licensing@OpenSSL.org.
26 *
27 * 5. Products derived from this software may not be called "OpenSSL"
28 * nor may "OpenSSL" appear in their names without prior written
29 * permission of the OpenSSL Project.
30 *
31 * 6. Redistributions of any form whatsoever must retain the following
32 * acknowledgment:
33 * "This product includes software developed by the OpenSSL Project
34 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
35 *
36 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
37 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
38 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
39 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
40 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
41 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
42 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
43 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
44 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
45 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
46 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
47 * OF THE POSSIBILITY OF SUCH DAMAGE.
48 * ====================================================================
49 *
50 * This product includes cryptographic software written by Eric Young
51 * (eay@cryptsoft.com). This product includes software written by Tim
52 * Hudson (tjh@cryptsoft.com).
53 *
54 */
55
56 /* This is an implementation of the ASN1 Time structure which is:
57 * Time ::= CHOICE {
58 * utcTime UTCTime,
59 * generalTime GeneralizedTime }
60 * written by Steve Henson.
61 */
62
63 #include <stdio.h>
64 #include <string.h>
65 #include <time.h>
66
67 #include <openssl/asn1t.h>
68 #include <openssl/err.h>
69
70 #include "asn1_local.h"
71
72 const ASN1_ITEM ASN1_TIME_it = {
73 .itype = ASN1_ITYPE_MSTRING,
74 .utype = B_ASN1_TIME,
75 .templates = NULL,
76 .tcount = 0,
77 .funcs = NULL,
78 .size = sizeof(ASN1_STRING),
79 .sname = "ASN1_TIME",
80 };
81
82 ASN1_TIME *
ASN1_TIME_new(void)83 ASN1_TIME_new(void)
84 {
85 return (ASN1_TIME *)ASN1_item_new(&ASN1_TIME_it);
86 }
87 LCRYPTO_ALIAS(ASN1_TIME_new);
88
89 void
ASN1_TIME_free(ASN1_TIME * a)90 ASN1_TIME_free(ASN1_TIME *a)
91 {
92 ASN1_item_free((ASN1_VALUE *)a, &ASN1_TIME_it);
93 }
94 LCRYPTO_ALIAS(ASN1_TIME_free);
95
96 int
ASN1_TIME_to_tm(const ASN1_TIME * s,struct tm * tm)97 ASN1_TIME_to_tm(const ASN1_TIME *s, struct tm *tm)
98 {
99 time_t now;
100
101 if (s != NULL)
102 return ASN1_time_parse(s->data, s->length, tm, 0) != -1;
103
104 time(&now);
105 memset(tm, 0, sizeof(*tm));
106
107 return asn1_time_time_t_to_tm(&now, tm);
108 }
109 LCRYPTO_ALIAS(ASN1_TIME_to_tm);
110
111 int
ASN1_TIME_diff(int * pday,int * psec,const ASN1_TIME * from,const ASN1_TIME * to)112 ASN1_TIME_diff(int *pday, int *psec, const ASN1_TIME *from, const ASN1_TIME *to)
113 {
114 struct tm tm_from, tm_to;
115
116 if (!ASN1_TIME_to_tm(from, &tm_from))
117 return 0;
118 if (!ASN1_TIME_to_tm(to, &tm_to))
119 return 0;
120
121 return OPENSSL_gmtime_diff(pday, psec, &tm_from, &tm_to);
122 }
123 LCRYPTO_ALIAS(ASN1_TIME_diff);
124
125 ASN1_TIME *
d2i_ASN1_TIME(ASN1_TIME ** a,const unsigned char ** in,long len)126 d2i_ASN1_TIME(ASN1_TIME **a, const unsigned char **in, long len)
127 {
128 return (ASN1_TIME *)ASN1_item_d2i((ASN1_VALUE **)a, in, len,
129 &ASN1_TIME_it);
130 }
131 LCRYPTO_ALIAS(d2i_ASN1_TIME);
132
133 int
i2d_ASN1_TIME(ASN1_TIME * a,unsigned char ** out)134 i2d_ASN1_TIME(ASN1_TIME *a, unsigned char **out)
135 {
136 return ASN1_item_i2d((ASN1_VALUE *)a, out, &ASN1_TIME_it);
137 }
138 LCRYPTO_ALIAS(i2d_ASN1_TIME);
139