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.
68 #include <openssl/asn1t.h>
69 #include "asn1_locl.h"
71 IMPLEMENT_ASN1_MSTRING(ASN1_TIME, B_ASN1_TIME)
73 IMPLEMENT_ASN1_FUNCTIONS(ASN1_TIME)
76 int i2d_ASN1_TIME(ASN1_TIME *a, unsigned char **pp)
79 /* KLUDGE! We convert to ascii before writing DER */
83 if(a->type == V_ASN1_UTCTIME || a->type == V_ASN1_GENERALIZEDTIME) {
86 tmpstr = *(ASN1_STRING *)a;
88 ebcdic2ascii(tmp, tmpstr.data, (len >= sizeof tmp) ? sizeof tmp : len);
90 a = (ASN1_GENERALIZEDTIME *) &tmpstr;
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);
102 ASN1_TIME *ASN1_TIME_set(ASN1_TIME *s, time_t t)
104 return ASN1_TIME_adj(s, t, 0, 0);
107 ASN1_TIME *ASN1_TIME_adj(ASN1_TIME *s, time_t t,
108 int offset_day, long offset_sec)
113 ts=OPENSSL_gmtime(&t,&data);
116 ASN1err(ASN1_F_ASN1_TIME_ADJ, ASN1_R_ERROR_GETTING_TIME);
119 if (offset_day || offset_sec)
121 if (!OPENSSL_gmtime_adj(ts, offset_day, offset_sec))
124 if((ts->tm_year >= 50) && (ts->tm_year < 150))
125 return ASN1_UTCTIME_adj(s, t, offset_day, offset_sec);
126 return ASN1_GENERALIZEDTIME_adj(s, t, offset_day, offset_sec);
129 int ASN1_TIME_check(ASN1_TIME *t)
131 if (t->type == V_ASN1_GENERALIZEDTIME)
132 return ASN1_GENERALIZEDTIME_check(t);
133 else if (t->type == V_ASN1_UTCTIME)
134 return ASN1_UTCTIME_check(t);
138 /* Convert an ASN1_TIME structure to GeneralizedTime */
139 ASN1_GENERALIZEDTIME *ASN1_TIME_to_generalizedtime(ASN1_TIME *t, ASN1_GENERALIZEDTIME **out)
141 ASN1_GENERALIZEDTIME *ret;
145 if (!ASN1_TIME_check(t)) return NULL;
149 if (!(ret = ASN1_GENERALIZEDTIME_new ()))
155 /* If already GeneralizedTime just copy across */
156 if (t->type == V_ASN1_GENERALIZEDTIME)
158 if(!ASN1_STRING_set(ret, t->data, t->length))
163 /* grow the string */
164 if (!ASN1_STRING_set(ret, NULL, t->length + 2))
166 /* ASN1_STRING_set() allocated 'len + 1' bytes. */
167 newlen = t->length + 2 + 1;
168 str = (char *)ret->data;
169 /* Work out the century and prepend */
170 if (t->data[0] >= '5') BUF_strlcpy(str, "19", newlen);
171 else BUF_strlcpy(str, "20", newlen);
173 BUF_strlcat(str, (char *)t->data, newlen);
178 int ASN1_TIME_set_string(ASN1_TIME *s, const char *str)
182 t.length = strlen(str);
183 t.data = (unsigned char *)str;
186 t.type = V_ASN1_UTCTIME;
188 if (!ASN1_TIME_check(&t))
190 t.type = V_ASN1_GENERALIZEDTIME;
191 if (!ASN1_TIME_check(&t))
195 if (s && !ASN1_STRING_copy((ASN1_STRING *)s, (ASN1_STRING *)&t))
201 static int asn1_time_to_tm(struct tm *tm, const ASN1_TIME *t)
207 if (OPENSSL_gmtime(&now_t, tm))
212 if (t->type == V_ASN1_UTCTIME)
213 return asn1_utctime_to_tm(tm, t);
214 else if (t->type == V_ASN1_GENERALIZEDTIME)
215 return asn1_generalizedtime_to_tm(tm, t);
220 int ASN1_TIME_diff(int *pday, int *psec,
221 const ASN1_TIME *from, const ASN1_TIME *to)
223 struct tm tm_from, tm_to;
224 if (!asn1_time_to_tm(&tm_from, from))
226 if (!asn1_time_to_tm(&tm_to, to))
228 return OPENSSL_gmtime_diff(pday, psec, &tm_from, &tm_to);