| /* 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 <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); |
| } |