/* 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 #include #include #include #include #include #include #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) 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_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); }