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1/* crypto/asn1/a_time.c */
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
57/* This is an implementation of the ASN1 Time structure which is:
58 * Time ::= CHOICE {
59 * utcTime UTCTime,
60 * generalTime GeneralizedTime }
61 * written by Steve Henson.
62 */
63
64#include <stdio.h>
65#include <time.h>
66#include "cryptlib.h"
67#include <openssl/asn1.h>
68
69int i2d_ASN1_TIME(ASN1_TIME *a, unsigned char **pp)
70 {
71#ifdef CHARSET_EBCDIC
72 /* KLUDGE! We convert to ascii before writing DER */
73 char tmp[24];
74 ASN1_STRING tmpstr;
75
76 if(a->type == V_ASN1_UTCTIME || a->type == V_ASN1_GENERALIZEDTIME) {
77 int len;
78
79 tmpstr = *(ASN1_STRING *)a;
80 len = tmpstr.length;
81 ebcdic2ascii(tmp, tmpstr.data, (len >= sizeof tmp) ? sizeof tmp : len);
82 tmpstr.data = tmp;
83 a = (ASN1_GENERALIZEDTIME *) &tmpstr;
84 }
85#endif
86 if(a->type == V_ASN1_UTCTIME || a->type == V_ASN1_GENERALIZEDTIME)
87 return(i2d_ASN1_bytes((ASN1_STRING *)a,pp,
88 a->type ,V_ASN1_UNIVERSAL));
89 ASN1err(ASN1_F_I2D_ASN1_TIME,ASN1_R_EXPECTING_A_TIME);
90 return -1;
91 }
92
93
94ASN1_TIME *d2i_ASN1_TIME(ASN1_TIME **a, unsigned char **pp, long length)
95 {
96 unsigned char tag;
97 tag = **pp & ~V_ASN1_CONSTRUCTED;
98 if(tag == (V_ASN1_UTCTIME|V_ASN1_UNIVERSAL))
99 return d2i_ASN1_UTCTIME(a, pp, length);
100 if(tag == (V_ASN1_GENERALIZEDTIME|V_ASN1_UNIVERSAL))
101 return d2i_ASN1_GENERALIZEDTIME(a, pp, length);
102 ASN1err(ASN1_F_D2I_ASN1_TIME,ASN1_R_EXPECTING_A_TIME);
103 return(NULL);
104 }
105
106
107ASN1_TIME *ASN1_TIME_set(ASN1_TIME *s, time_t t)
108 {
109 struct tm *ts;
110#if defined(THREADS) && !defined(WIN32)
111 struct tm data;
112#endif
113
114#if defined(THREADS) && !defined(WIN32)
115 gmtime_r(&t,&data);
116 ts=&data; /* should return &data, but doesn't on some systems, so we don't even look at the return value */
117#else
118 ts=gmtime(&t);
119#endif
120 if((ts->tm_year >= 50) && (ts->tm_year < 150))
121 return ASN1_UTCTIME_set(s, t);
122 return ASN1_GENERALIZEDTIME_set(s,t);
123 }