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- /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
- * All rights reserved.
- *
- * This package is an SSL implementation written
- * by Eric Young (eay@cryptsoft.com).
- * The implementation was written so as to conform with Netscapes SSL.
- *
- * This library is free for commercial and non-commercial use as long as
- * the following conditions are aheared to. The following conditions
- * apply to all code found in this distribution, be it the RC4, RSA,
- * lhash, DES, etc., code; not just the SSL code. The SSL documentation
- * included with this distribution is covered by the same copyright terms
- * except that the holder is Tim Hudson (tjh@cryptsoft.com).
- *
- * Copyright remains Eric Young's, and as such any Copyright notices in
- * the code are not to be removed.
- * If this package is used in a product, Eric Young should be given attribution
- * as the author of the parts of the library used.
- * This can be in the form of a textual message at program startup or
- * in documentation (online or textual) provided with the package.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * "This product includes cryptographic software written by
- * Eric Young (eay@cryptsoft.com)"
- * The word 'cryptographic' can be left out if the rouines from the library
- * being used are not cryptographic related :-).
- * 4. If you include any Windows specific code (or a derivative thereof) from
- * the apps directory (application code) you must include an acknowledgement:
- * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
- *
- * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * The licence and distribution terms for any publically available version or
- * derivative of this code cannot be changed. i.e. this code cannot simply be
- * copied and put under another distribution licence
- * [including the GNU Public Licence.] */
-
- #include <openssl/asn1.h>
-
- #include <string.h>
- #include <time.h>
-
- #include <openssl/asn1t.h>
- #include <openssl/buf.h>
- #include <openssl/err.h>
- #include <openssl/mem.h>
- #include <openssl/time_support.h>
-
- #include "asn1_locl.h"
-
-
- /* This is an implementation of the ASN1 Time structure which is:
- * Time ::= CHOICE {
- * utcTime UTCTime,
- * generalTime GeneralizedTime }
- * written by Steve Henson.
- */
-
- IMPLEMENT_ASN1_MSTRING(ASN1_TIME, B_ASN1_TIME)
-
- IMPLEMENT_ASN1_FUNCTIONS(ASN1_TIME)
-
- #if 0
- int i2d_ASN1_TIME(ASN1_TIME *a, unsigned char **pp)
- {
- if(a->type == V_ASN1_UTCTIME || a->type == V_ASN1_GENERALIZEDTIME)
- return(i2d_ASN1_bytes((ASN1_STRING *)a,pp,
- a->type ,V_ASN1_UNIVERSAL));
- OPENSSL_PUT_ERROR(ASN1, XXX, ASN1_R_EXPECTING_A_TIME);
- return -1;
- }
- #endif
-
-
- ASN1_TIME *ASN1_TIME_set(ASN1_TIME *s, time_t t)
- {
- return ASN1_TIME_adj(s, t, 0, 0);
- }
-
- ASN1_TIME *ASN1_TIME_adj(ASN1_TIME *s, time_t t,
- int offset_day, long offset_sec)
- {
- struct tm *ts;
- struct tm data;
-
- ts=OPENSSL_gmtime(&t,&data);
- if (ts == NULL)
- {
- OPENSSL_PUT_ERROR(ASN1, ASN1_TIME_adj, ASN1_R_ERROR_GETTING_TIME);
- return NULL;
- }
- if (offset_day || offset_sec)
- {
- if (!OPENSSL_gmtime_adj(ts, offset_day, offset_sec))
- return NULL;
- }
- if((ts->tm_year >= 50) && (ts->tm_year < 150))
- return ASN1_UTCTIME_adj(s, t, offset_day, offset_sec);
- return ASN1_GENERALIZEDTIME_adj(s, t, offset_day, offset_sec);
- }
-
- int ASN1_TIME_check(ASN1_TIME *t)
- {
- if (t->type == V_ASN1_GENERALIZEDTIME)
- return ASN1_GENERALIZEDTIME_check(t);
- else if (t->type == V_ASN1_UTCTIME)
- return ASN1_UTCTIME_check(t);
- return 0;
- }
-
- /* Convert an ASN1_TIME structure to GeneralizedTime */
- ASN1_GENERALIZEDTIME *ASN1_TIME_to_generalizedtime(ASN1_TIME *t, ASN1_GENERALIZEDTIME **out)
- {
- ASN1_GENERALIZEDTIME *ret;
- char *str;
- int newlen;
-
- if (!ASN1_TIME_check(t)) return NULL;
-
- if (!out || !*out)
- {
- if (!(ret = ASN1_GENERALIZEDTIME_new ()))
- return NULL;
- if (out) *out = ret;
- }
- else ret = *out;
-
- /* If already GeneralizedTime just copy across */
- if (t->type == V_ASN1_GENERALIZEDTIME)
- {
- if(!ASN1_STRING_set(ret, t->data, t->length))
- return NULL;
- return ret;
- }
-
- /* grow the string */
- if (!ASN1_STRING_set(ret, NULL, t->length + 2))
- return NULL;
- /* ASN1_STRING_set() allocated 'len + 1' bytes. */
- newlen = t->length + 2 + 1;
- str = (char *)ret->data;
- /* Work out the century and prepend */
- if (t->data[0] >= '5') BUF_strlcpy(str, "19", newlen);
- else BUF_strlcpy(str, "20", newlen);
-
- BUF_strlcat(str, (char *)t->data, newlen);
-
- return ret;
- }
-
- int ASN1_TIME_set_string(ASN1_TIME *s, const char *str)
- {
- ASN1_TIME t;
-
- t.length = strlen(str);
- t.data = (unsigned char *)str;
- t.flags = 0;
-
- t.type = V_ASN1_UTCTIME;
-
- if (!ASN1_TIME_check(&t))
- {
- t.type = V_ASN1_GENERALIZEDTIME;
- if (!ASN1_TIME_check(&t))
- return 0;
- }
-
- if (s && !ASN1_STRING_copy((ASN1_STRING *)s, (ASN1_STRING *)&t))
- return 0;
-
- return 1;
- }
-
- static int asn1_time_to_tm(struct tm *tm, const ASN1_TIME *t)
- {
- if (t == NULL)
- {
- time_t now_t;
- time(&now_t);
- if (OPENSSL_gmtime(&now_t, tm))
- return 1;
- return 0;
- }
-
- if (t->type == V_ASN1_UTCTIME)
- return asn1_utctime_to_tm(tm, t);
- else if (t->type == V_ASN1_GENERALIZEDTIME)
- return asn1_generalizedtime_to_tm(tm, t);
-
- return 0;
- }
-
- int ASN1_TIME_diff(int *pday, int *psec,
- const ASN1_TIME *from, const ASN1_TIME *to)
- {
- struct tm tm_from, tm_to;
- if (!asn1_time_to_tm(&tm_from, from))
- return 0;
- if (!asn1_time_to_tm(&tm_to, to))
- return 0;
- return OPENSSL_gmtime_diff(pday, psec, &tm_from, &tm_to);
- }
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