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 "o_time.h"
68 #include <openssl/asn1t.h>
69
IMPLEMENT_ASN1_MSTRING(ASN1_TIME,B_ASN1_TIME)70 IMPLEMENT_ASN1_MSTRING(ASN1_TIME, B_ASN1_TIME)
71
72 IMPLEMENT_ASN1_FUNCTIONS(ASN1_TIME)
73
74 #if 0
75 int 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,
88 (len >= sizeof tmp) ? sizeof tmp : len);
89 tmpstr.data = tmp;
90 a = (ASN1_GENERALIZEDTIME *)&tmpstr;
91 }
92 # endif
93 if (a->type == V_ASN1_UTCTIME || a->type == V_ASN1_GENERALIZEDTIME)
94 return (i2d_ASN1_bytes((ASN1_STRING *)a, pp,
95 a->type, V_ASN1_UNIVERSAL));
96 ASN1err(ASN1_F_I2D_ASN1_TIME, ASN1_R_EXPECTING_A_TIME);
97 return -1;
98 }
99 #endif
100
101 ASN1_TIME *ASN1_TIME_set(ASN1_TIME *s, time_t t)
102 {
103 struct tm *ts;
104 struct tm data;
105
106 ts = OPENSSL_gmtime(&t, &data);
107 if (ts == NULL) {
108 ASN1err(ASN1_F_ASN1_TIME_SET, ASN1_R_ERROR_GETTING_TIME);
109 return NULL;
110 }
111 if ((ts->tm_year >= 50) && (ts->tm_year < 150))
112 return ASN1_UTCTIME_set(s, t);
113 return ASN1_GENERALIZEDTIME_set(s, t);
114 }
115
ASN1_TIME_check(ASN1_TIME * t)116 int ASN1_TIME_check(ASN1_TIME *t)
117 {
118 if (t->type == V_ASN1_GENERALIZEDTIME)
119 return ASN1_GENERALIZEDTIME_check(t);
120 else if (t->type == V_ASN1_UTCTIME)
121 return ASN1_UTCTIME_check(t);
122 return 0;
123 }
124
125 /* Convert an ASN1_TIME structure to GeneralizedTime */
ASN1_TIME_to_generalizedtime(ASN1_TIME * t,ASN1_GENERALIZEDTIME ** out)126 ASN1_GENERALIZEDTIME *ASN1_TIME_to_generalizedtime(ASN1_TIME *t,
127 ASN1_GENERALIZEDTIME **out)
128 {
129 ASN1_GENERALIZEDTIME *ret;
130 char *str;
131 int newlen;
132
133 if (!ASN1_TIME_check(t))
134 return NULL;
135
136 if (!out || !*out) {
137 if (!(ret = ASN1_GENERALIZEDTIME_new()))
138 return NULL;
139 if (out)
140 *out = ret;
141 } else
142 ret = *out;
143
144 /* If already GeneralizedTime just copy across */
145 if (t->type == V_ASN1_GENERALIZEDTIME) {
146 if (!ASN1_STRING_set(ret, t->data, t->length))
147 return NULL;
148 return ret;
149 }
150
151 /* grow the string */
152 if (!ASN1_STRING_set(ret, NULL, t->length + 2))
153 return NULL;
154 /* ASN1_STRING_set() allocated 'len + 1' bytes. */
155 newlen = t->length + 2 + 1;
156 str = (char *)ret->data;
157 /* Work out the century and prepend */
158 if (t->data[0] >= '5')
159 BUF_strlcpy(str, "19", newlen);
160 else
161 BUF_strlcpy(str, "20", newlen);
162
163 BUF_strlcat(str, (char *)t->data, newlen);
164
165 return ret;
166 }
167