a_time.c revision 59191 
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
69ASN1_TIME *ASN1_TIME_new(void)
70{ return M_ASN1_TIME_new(); }
71
72void ASN1_TIME_free(ASN1_TIME *x)
73{ M_ASN1_TIME_free(x); }
74
75int i2d_ASN1_TIME(ASN1_TIME *a, unsigned char **pp)
76	{
77#ifdef CHARSET_EBCDIC
78	/* KLUDGE! We convert to ascii before writing DER */
79	char tmp[24];
80	ASN1_STRING tmpstr;
81
82	if(a->type == V_ASN1_UTCTIME || a->type == V_ASN1_GENERALIZEDTIME) {
83	    int len;
84
85	    tmpstr = *(ASN1_STRING *)a;
86	    len = tmpstr.length;
87	    ebcdic2ascii(tmp, tmpstr.data, (len >= sizeof tmp) ? sizeof tmp : len);
88	    tmpstr.data = tmp;
89	    a = (ASN1_GENERALIZEDTIME *) &tmpstr;
90	}
91#endif
92	if(a->type == V_ASN1_UTCTIME || a->type == V_ASN1_GENERALIZEDTIME)
93				return(i2d_ASN1_bytes((ASN1_STRING *)a,pp,
94				     a->type ,V_ASN1_UNIVERSAL));
95	ASN1err(ASN1_F_I2D_ASN1_TIME,ASN1_R_EXPECTING_A_TIME);
96	return -1;
97	}
98
99
100ASN1_TIME *d2i_ASN1_TIME(ASN1_TIME **a, unsigned char **pp, long length)
101	{
102	unsigned char tag;
103	tag = **pp & ~V_ASN1_CONSTRUCTED;
104	if(tag == (V_ASN1_UTCTIME|V_ASN1_UNIVERSAL))
105					 return d2i_ASN1_UTCTIME(a, pp, length);
106	if(tag == (V_ASN1_GENERALIZEDTIME|V_ASN1_UNIVERSAL))
107				return d2i_ASN1_GENERALIZEDTIME(a, pp, length);
108	ASN1err(ASN1_F_D2I_ASN1_TIME,ASN1_R_EXPECTING_A_TIME);
109	return(NULL);
110	}
111
112
113ASN1_TIME *ASN1_TIME_set(ASN1_TIME *s, time_t t)
114	{
115	struct tm *ts;
116#if defined(THREADS) && !defined(WIN32)
117	struct tm data;
118#endif
119
120#if defined(THREADS) && !defined(WIN32)
121	gmtime_r(&t,&data);
122	ts=&data; /* should return &data, but doesn't on some systems, so we don't even look at the return value */
123#else
124	ts=gmtime(&t);
125#endif
126	if((ts->tm_year >= 50) && (ts->tm_year < 150))
127					return ASN1_UTCTIME_set(s, t);
128	return ASN1_GENERALIZEDTIME_set(s,t);
129	}
130