1 /* crypto/asn1/a_time.c */
2 /* ====================================================================
3 * Copyright (c) 1999 The OpenSSL Project. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
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
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/)"
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.
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.
31 * 6. Redistributions of any form whatsoever must retain the following
33 * "This product includes software developed by the OpenSSL Project
34 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
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 * ====================================================================
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).
57 * This is an implementation of the ASN1 Time structure which is:
60 * generalTime GeneralizedTime }
61 * written by Steve Henson.
66 #include "internal/cryptlib.h"
67 #include <openssl/asn1t.h>
68 #include "asn1_locl.h"
70 IMPLEMENT_ASN1_MSTRING(ASN1_TIME
, B_ASN1_TIME
)
72 IMPLEMENT_ASN1_FUNCTIONS(ASN1_TIME
)
74 ASN1_TIME
*ASN1_TIME_set(ASN1_TIME
*s
, time_t t
)
76 return ASN1_TIME_adj(s
, t
, 0, 0);
79 ASN1_TIME
*ASN1_TIME_adj(ASN1_TIME
*s
, time_t t
,
80 int offset_day
, long offset_sec
)
85 ts
= OPENSSL_gmtime(&t
, &data
);
87 ASN1err(ASN1_F_ASN1_TIME_ADJ
, ASN1_R_ERROR_GETTING_TIME
);
90 if (offset_day
|| offset_sec
) {
91 if (!OPENSSL_gmtime_adj(ts
, offset_day
, offset_sec
))
94 if ((ts
->tm_year
>= 50) && (ts
->tm_year
< 150))
95 return ASN1_UTCTIME_adj(s
, t
, offset_day
, offset_sec
);
96 return ASN1_GENERALIZEDTIME_adj(s
, t
, offset_day
, offset_sec
);
99 int ASN1_TIME_check(const ASN1_TIME
*t
)
101 if (t
->type
== V_ASN1_GENERALIZEDTIME
)
102 return ASN1_GENERALIZEDTIME_check(t
);
103 else if (t
->type
== V_ASN1_UTCTIME
)
104 return ASN1_UTCTIME_check(t
);
108 /* Convert an ASN1_TIME structure to GeneralizedTime */
109 ASN1_GENERALIZEDTIME
*ASN1_TIME_to_generalizedtime(ASN1_TIME
*t
,
110 ASN1_GENERALIZEDTIME
**out
)
112 ASN1_GENERALIZEDTIME
*ret
;
116 if (!ASN1_TIME_check(t
))
119 if (out
== NULL
|| *out
== NULL
) {
120 if ((ret
= ASN1_GENERALIZEDTIME_new()) == NULL
)
127 /* If already GeneralizedTime just copy across */
128 if (t
->type
== V_ASN1_GENERALIZEDTIME
) {
129 if (!ASN1_STRING_set(ret
, t
->data
, t
->length
))
134 /* grow the string */
135 if (!ASN1_STRING_set(ret
, NULL
, t
->length
+ 2))
137 /* ASN1_STRING_set() allocated 'len + 1' bytes. */
138 newlen
= t
->length
+ 2 + 1;
139 str
= (char *)ret
->data
;
140 /* Work out the century and prepend */
141 if (t
->data
[0] >= '5')
142 BUF_strlcpy(str
, "19", newlen
);
144 BUF_strlcpy(str
, "20", newlen
);
146 BUF_strlcat(str
, (char *)t
->data
, newlen
);
151 int ASN1_TIME_set_string(ASN1_TIME
*s
, const char *str
)
155 t
.length
= strlen(str
);
156 t
.data
= (unsigned char *)str
;
159 t
.type
= V_ASN1_UTCTIME
;
161 if (!ASN1_TIME_check(&t
)) {
162 t
.type
= V_ASN1_GENERALIZEDTIME
;
163 if (!ASN1_TIME_check(&t
))
167 if (s
&& !ASN1_STRING_copy((ASN1_STRING
*)s
, (ASN1_STRING
*)&t
))
173 static int asn1_time_to_tm(struct tm
*tm
, const ASN1_TIME
*t
)
178 if (OPENSSL_gmtime(&now_t
, tm
))
183 if (t
->type
== V_ASN1_UTCTIME
)
184 return asn1_utctime_to_tm(tm
, t
);
185 else if (t
->type
== V_ASN1_GENERALIZEDTIME
)
186 return asn1_generalizedtime_to_tm(tm
, t
);
191 int ASN1_TIME_diff(int *pday
, int *psec
,
192 const ASN1_TIME
*from
, const ASN1_TIME
*to
)
194 struct tm tm_from
, tm_to
;
195 if (!asn1_time_to_tm(&tm_from
, from
))
197 if (!asn1_time_to_tm(&tm_to
, to
))
199 return OPENSSL_gmtime_diff(pday
, psec
, &tm_from
, &tm_to
);