| /* 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 <openssl/time_support.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; |
| |
| 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 |
