|
- /* 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/err.h>
- #include <openssl/mem.h>
-
- #include "asn1_locl.h"
-
-
- int asn1_utctime_to_tm(struct tm *tm, const ASN1_UTCTIME *d)
- {
- static const int min[8] = { 0, 1, 1, 0, 0, 0, 0, 0 };
- static const int max[8] = { 99, 12, 31, 23, 59, 59, 12, 59 };
- char *a;
- int n, i, l, o;
-
- if (d->type != V_ASN1_UTCTIME)
- return (0);
- l = d->length;
- a = (char *)d->data;
- o = 0;
-
- if (l < 11)
- goto err;
- for (i = 0; i < 6; i++) {
- if ((i == 5) && ((a[o] == 'Z') || (a[o] == '+') || (a[o] == '-'))) {
- i++;
- if (tm)
- tm->tm_sec = 0;
- break;
- }
- if ((a[o] < '0') || (a[o] > '9'))
- goto err;
- n = a[o] - '0';
- if (++o > l)
- goto err;
-
- if ((a[o] < '0') || (a[o] > '9'))
- goto err;
- n = (n * 10) + a[o] - '0';
- if (++o > l)
- goto err;
-
- if ((n < min[i]) || (n > max[i]))
- goto err;
- if (tm) {
- switch (i) {
- case 0:
- tm->tm_year = n < 50 ? n + 100 : n;
- break;
- case 1:
- tm->tm_mon = n - 1;
- break;
- case 2:
- tm->tm_mday = n;
- break;
- case 3:
- tm->tm_hour = n;
- break;
- case 4:
- tm->tm_min = n;
- break;
- case 5:
- tm->tm_sec = n;
- break;
- }
- }
- }
- if (a[o] == 'Z')
- o++;
- else if ((a[o] == '+') || (a[o] == '-')) {
- int offsign = a[o] == '-' ? 1 : -1, offset = 0;
- o++;
- if (o + 4 > l)
- goto err;
- for (i = 6; i < 8; i++) {
- if ((a[o] < '0') || (a[o] > '9'))
- goto err;
- n = a[o] - '0';
- o++;
- if ((a[o] < '0') || (a[o] > '9'))
- goto err;
- n = (n * 10) + a[o] - '0';
- if ((n < min[i]) || (n > max[i]))
- goto err;
- if (tm) {
- if (i == 6)
- offset = n * 3600;
- else if (i == 7)
- offset += n * 60;
- }
- o++;
- }
- if (offset && !OPENSSL_gmtime_adj(tm, 0, offset * offsign))
- return 0;
- }
- return o == l;
- err:
- return 0;
- }
-
- int ASN1_UTCTIME_check(const ASN1_UTCTIME *d)
- {
- return asn1_utctime_to_tm(NULL, d);
- }
-
- int ASN1_UTCTIME_set_string(ASN1_UTCTIME *s, const char *str)
- {
- ASN1_UTCTIME t;
-
- t.type = V_ASN1_UTCTIME;
- t.length = strlen(str);
- t.data = (unsigned char *)str;
- if (ASN1_UTCTIME_check(&t)) {
- if (s != NULL) {
- if (!ASN1_STRING_set((ASN1_STRING *)s,
- (unsigned char *)str, t.length))
- return 0;
- s->type = V_ASN1_UTCTIME;
- }
- return (1);
- } else
- return (0);
- }
-
- ASN1_UTCTIME *ASN1_UTCTIME_set(ASN1_UTCTIME *s, time_t t)
- {
- return ASN1_UTCTIME_adj(s, t, 0, 0);
- }
-
- ASN1_UTCTIME *ASN1_UTCTIME_adj(ASN1_UTCTIME *s, time_t t,
- int offset_day, long offset_sec)
- {
- char *p;
- struct tm *ts;
- struct tm data;
- size_t len = 20;
- int free_s = 0;
-
- if (s == NULL) {
- free_s = 1;
- s = M_ASN1_UTCTIME_new();
- }
- if (s == NULL)
- goto err;
-
- ts = OPENSSL_gmtime(&t, &data);
- if (ts == NULL)
- goto err;
-
- if (offset_day || offset_sec) {
- if (!OPENSSL_gmtime_adj(ts, offset_day, offset_sec))
- goto err;
- }
-
- if ((ts->tm_year < 50) || (ts->tm_year >= 150))
- goto err;
-
- p = (char *)s->data;
- if ((p == NULL) || ((size_t)s->length < len)) {
- p = OPENSSL_malloc(len);
- if (p == NULL) {
- OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
- goto err;
- }
- if (s->data != NULL)
- OPENSSL_free(s->data);
- s->data = (unsigned char *)p;
- }
-
- BIO_snprintf(p, len, "%02d%02d%02d%02d%02d%02dZ", ts->tm_year % 100,
- ts->tm_mon + 1, ts->tm_mday, ts->tm_hour, ts->tm_min,
- ts->tm_sec);
- s->length = strlen(p);
- s->type = V_ASN1_UTCTIME;
- return (s);
- err:
- if (free_s && s)
- M_ASN1_UTCTIME_free(s);
- return NULL;
- }
-
- int ASN1_UTCTIME_cmp_time_t(const ASN1_UTCTIME *s, time_t t)
- {
- struct tm stm, ttm;
- int day, sec;
-
- if (!asn1_utctime_to_tm(&stm, s))
- return -2;
-
- if (!OPENSSL_gmtime(&t, &ttm))
- return -2;
-
- if (!OPENSSL_gmtime_diff(&day, &sec, &ttm, &stm))
- return -2;
-
- if (day > 0)
- return 1;
- if (day < 0)
- return -1;
- if (sec > 0)
- return 1;
- if (sec < 0)
- return -1;
- return 0;
- }
-
- #if 0
- time_t ASN1_UTCTIME_get(const ASN1_UTCTIME *s)
- {
- struct tm tm;
- int offset;
-
- OPENSSL_memset(&tm, '\0', sizeof tm);
-
- # define g2(p) (((p)[0]-'0')*10+(p)[1]-'0')
- tm.tm_year = g2(s->data);
- if (tm.tm_year < 50)
- tm.tm_year += 100;
- tm.tm_mon = g2(s->data + 2) - 1;
- tm.tm_mday = g2(s->data + 4);
- tm.tm_hour = g2(s->data + 6);
- tm.tm_min = g2(s->data + 8);
- tm.tm_sec = g2(s->data + 10);
- if (s->data[12] == 'Z')
- offset = 0;
- else {
- offset = g2(s->data + 13) * 60 + g2(s->data + 15);
- if (s->data[12] == '-')
- offset = -offset;
- }
- # undef g2
-
- return mktime(&tm) - offset * 60; /* FIXME: mktime assumes the current
- * timezone instead of UTC, and unless
- * we rewrite OpenSSL in Lisp we cannot
- * locally change the timezone without
- * possibly interfering with other
- * parts of the program. timegm, which
- * uses UTC, is non-standard. Also
- * time_t is inappropriate for general
- * UTC times because it may a 32 bit
- * type. */
- }
- #endif
|