236 lines
7 KiB
C
236 lines
7 KiB
C
/* crypto/asn1/a_time.c */
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/* ====================================================================
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* Copyright (c) 1999 The OpenSSL Project. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. All advertising materials mentioning features or use of this
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* software must display the following acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
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*
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* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
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* endorse or promote products derived from this software without
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* prior written permission. For written permission, please contact
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* licensing@OpenSSL.org.
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*
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* 5. Products derived from this software may not be called "OpenSSL"
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* nor may "OpenSSL" appear in their names without prior written
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* permission of the OpenSSL Project.
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*
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* 6. Redistributions of any form whatsoever must retain the following
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* acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
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*
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* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
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* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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* ====================================================================
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*
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* This product includes cryptographic software written by Eric Young
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* (eay@cryptsoft.com). This product includes software written by Tim
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* Hudson (tjh@cryptsoft.com).
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*
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*/
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/*-
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* This is an implementation of the ASN1 Time structure which is:
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* Time ::= CHOICE {
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* utcTime UTCTime,
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* generalTime GeneralizedTime }
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* written by Steve Henson.
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*/
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#include <stdio.h>
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#include <time.h>
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#include "cryptlib.h"
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#include "o_time.h"
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#include <openssl/asn1t.h>
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#include "asn1_locl.h"
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IMPLEMENT_ASN1_MSTRING(ASN1_TIME, B_ASN1_TIME)
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IMPLEMENT_ASN1_FUNCTIONS(ASN1_TIME)
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#if 0
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int i2d_ASN1_TIME(ASN1_TIME *a, unsigned char **pp)
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{
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# ifdef CHARSET_EBCDIC
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/* KLUDGE! We convert to ascii before writing DER */
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char tmp[24];
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ASN1_STRING tmpstr;
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if (a->type == V_ASN1_UTCTIME || a->type == V_ASN1_GENERALIZEDTIME) {
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int len;
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tmpstr = *(ASN1_STRING *)a;
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len = tmpstr.length;
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ebcdic2ascii(tmp, tmpstr.data,
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(len >= sizeof tmp) ? sizeof tmp : len);
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tmpstr.data = tmp;
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a = (ASN1_GENERALIZEDTIME *)&tmpstr;
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}
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# endif
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if (a->type == V_ASN1_UTCTIME || a->type == V_ASN1_GENERALIZEDTIME)
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return (i2d_ASN1_bytes((ASN1_STRING *)a, pp,
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a->type, V_ASN1_UNIVERSAL));
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ASN1err(ASN1_F_I2D_ASN1_TIME, ASN1_R_EXPECTING_A_TIME);
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return -1;
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}
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#endif
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ASN1_TIME *ASN1_TIME_set(ASN1_TIME *s, time_t t)
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{
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return ASN1_TIME_adj(s, t, 0, 0);
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}
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ASN1_TIME *ASN1_TIME_adj(ASN1_TIME *s, time_t t,
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int offset_day, long offset_sec)
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{
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struct tm *ts;
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struct tm data;
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ts = OPENSSL_gmtime(&t, &data);
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if (ts == NULL) {
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ASN1err(ASN1_F_ASN1_TIME_ADJ, ASN1_R_ERROR_GETTING_TIME);
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return NULL;
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}
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if (offset_day || offset_sec) {
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if (!OPENSSL_gmtime_adj(ts, offset_day, offset_sec))
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return NULL;
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}
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if ((ts->tm_year >= 50) && (ts->tm_year < 150))
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return ASN1_UTCTIME_adj(s, t, offset_day, offset_sec);
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return ASN1_GENERALIZEDTIME_adj(s, t, offset_day, offset_sec);
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}
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int ASN1_TIME_check(ASN1_TIME *t)
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{
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if (t->type == V_ASN1_GENERALIZEDTIME)
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return ASN1_GENERALIZEDTIME_check(t);
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else if (t->type == V_ASN1_UTCTIME)
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return ASN1_UTCTIME_check(t);
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return 0;
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}
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/* Convert an ASN1_TIME structure to GeneralizedTime */
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ASN1_GENERALIZEDTIME *ASN1_TIME_to_generalizedtime(ASN1_TIME *t,
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ASN1_GENERALIZEDTIME **out)
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{
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ASN1_GENERALIZEDTIME *ret = NULL;
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char *str;
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int newlen;
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if (!ASN1_TIME_check(t))
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return NULL;
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if (!out || !*out) {
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if (!(ret = ASN1_GENERALIZEDTIME_new()))
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goto err;
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} else {
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ret = *out;
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}
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/* If already GeneralizedTime just copy across */
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if (t->type == V_ASN1_GENERALIZEDTIME) {
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if (!ASN1_STRING_set(ret, t->data, t->length))
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goto err;
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goto done;
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}
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/* grow the string */
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if (!ASN1_STRING_set(ret, NULL, t->length + 2))
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goto err;
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/* ASN1_STRING_set() allocated 'len + 1' bytes. */
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newlen = t->length + 2 + 1;
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str = (char *)ret->data;
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/* Work out the century and prepend */
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if (t->data[0] >= '5')
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BUF_strlcpy(str, "19", newlen);
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else
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BUF_strlcpy(str, "20", newlen);
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BUF_strlcat(str, (char *)t->data, newlen);
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done:
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if (out != NULL && *out == NULL)
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*out = ret;
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return ret;
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err:
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if (out == NULL || *out != ret)
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ASN1_GENERALIZEDTIME_free(ret);
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return NULL;
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}
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int ASN1_TIME_set_string(ASN1_TIME *s, const char *str)
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{
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ASN1_TIME t;
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t.length = strlen(str);
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t.data = (unsigned char *)str;
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t.flags = 0;
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t.type = V_ASN1_UTCTIME;
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if (!ASN1_TIME_check(&t)) {
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t.type = V_ASN1_GENERALIZEDTIME;
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if (!ASN1_TIME_check(&t))
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return 0;
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}
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if (s && !ASN1_STRING_copy((ASN1_STRING *)s, (ASN1_STRING *)&t))
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return 0;
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return 1;
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}
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static int asn1_time_to_tm(struct tm *tm, const ASN1_TIME *t)
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{
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if (t == NULL) {
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time_t now_t;
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time(&now_t);
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if (OPENSSL_gmtime(&now_t, tm))
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return 1;
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return 0;
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}
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if (t->type == V_ASN1_UTCTIME)
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return asn1_utctime_to_tm(tm, t);
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else if (t->type == V_ASN1_GENERALIZEDTIME)
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return asn1_generalizedtime_to_tm(tm, t);
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return 0;
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}
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int ASN1_TIME_diff(int *pday, int *psec,
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const ASN1_TIME *from, const ASN1_TIME *to)
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{
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struct tm tm_from, tm_to;
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if (!asn1_time_to_tm(&tm_from, from))
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return 0;
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if (!asn1_time_to_tm(&tm_to, to))
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return 0;
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return OPENSSL_gmtime_diff(pday, psec, &tm_from, &tm_to);
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}
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