/* crypto/asn1/a_gentm.c */ /* 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.] */ /* GENERALIZEDTIME implementation, written by Steve Henson. Based on UTCTIME */ #include <stdio.h> #include <time.h> #include "cryptlib.h" #include <openssl/asn1.h> ASN1_GENERALIZEDTIME *ASN1_GENERALIZEDTIME_new(void) { return M_ASN1_GENERALIZEDTIME_new(); } void ASN1_GENERALIZEDTIME_free(ASN1_GENERALIZEDTIME *x) { M_ASN1_GENERALIZEDTIME_free(x); } int i2d_ASN1_GENERALIZEDTIME(ASN1_GENERALIZEDTIME *a, unsigned char **pp) { #ifdef CHARSET_EBCDIC /* KLUDGE! We convert to ascii before writing DER */ int len; char tmp[24]; ASN1_STRING tmpstr = *(ASN1_STRING *)a; len = tmpstr.length; ebcdic2ascii(tmp, tmpstr.data, (len >= sizeof tmp) ? sizeof tmp : len); tmpstr.data = tmp; a = (ASN1_GENERALIZEDTIME *) &tmpstr; #endif return(i2d_ASN1_bytes((ASN1_STRING *)a,pp, V_ASN1_GENERALIZEDTIME,V_ASN1_UNIVERSAL)); } ASN1_GENERALIZEDTIME *d2i_ASN1_GENERALIZEDTIME(ASN1_GENERALIZEDTIME **a, unsigned char **pp, long length) { ASN1_GENERALIZEDTIME *ret=NULL; ret=(ASN1_GENERALIZEDTIME *)d2i_ASN1_bytes((ASN1_STRING **)a,pp,length, V_ASN1_GENERALIZEDTIME,V_ASN1_UNIVERSAL); if (ret == NULL) { ASN1err(ASN1_F_D2I_ASN1_GENERALIZEDTIME,ERR_R_NESTED_ASN1_ERROR); return(NULL); } #ifdef CHARSET_EBCDIC ascii2ebcdic(ret->data, ret->data, ret->length); #endif if (!ASN1_GENERALIZEDTIME_check(ret)) { ASN1err(ASN1_F_D2I_ASN1_GENERALIZEDTIME,ASN1_R_INVALID_TIME_FORMAT); goto err; } return(ret); err: if ((ret != NULL) && ((a == NULL) || (*a != ret))) M_ASN1_GENERALIZEDTIME_free(ret); return(NULL); } int ASN1_GENERALIZEDTIME_check(ASN1_GENERALIZEDTIME *d) { static int min[9]={ 0, 0, 1, 1, 0, 0, 0, 0, 0}; static int max[9]={99, 99,12,31,23,59,59,12,59}; char *a; int n,i,l,o; if (d->type != V_ASN1_GENERALIZEDTIME) return(0); l=d->length; a=(char *)d->data; o=0; /* GENERALIZEDTIME is similar to UTCTIME except the year is * represented as YYYY. This stuff treats everything as a two digit * field so make first two fields 00 to 99 */ if (l < 13) goto err; for (i=0; i<7; i++) { if ((i == 6) && ((a[o] == 'Z') || (a[o] == '+') || (a[o] == '-'))) { i++; 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 (a[o] == 'Z') o++; else if ((a[o] == '+') || (a[o] == '-')) { o++; if (o+4 > l) goto err; for (i=7; i<9; 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; o++; } } return(o == l); err: return(0); } int ASN1_GENERALIZEDTIME_set_string(ASN1_GENERALIZEDTIME *s, char *str) { ASN1_GENERALIZEDTIME t; t.type=V_ASN1_GENERALIZEDTIME; t.length=strlen(str); t.data=(unsigned char *)str; if (ASN1_GENERALIZEDTIME_check(&t)) { if (s != NULL) { ASN1_STRING_set((ASN1_STRING *)s, (unsigned char *)str,t.length); } return(1); } else return(0); } ASN1_GENERALIZEDTIME *ASN1_GENERALIZEDTIME_set(ASN1_GENERALIZEDTIME *s, time_t t) { char *p; struct tm *ts; #if defined(THREADS) && !defined(WIN32) struct tm data; #endif if (s == NULL) s=M_ASN1_GENERALIZEDTIME_new(); if (s == NULL) return(NULL); #if defined(THREADS) && !defined(WIN32) && ! defined(_DARWIN) gmtime_r(&t,&data); /* should return &data, but doesn't on some systems, so we don't even look at the return value */ ts=&data; #else ts=gmtime(&t); #endif p=(char *)s->data; if ((p == NULL) || (s->length < 16)) { p=OPENSSL_malloc(20); if (p == NULL) return(NULL); if (s->data != NULL) OPENSSL_free(s->data); s->data=(unsigned char *)p; } sprintf(p,"%04d%02d%02d%02d%02d%02dZ",ts->tm_year + 1900, ts->tm_mon+1,ts->tm_mday,ts->tm_hour,ts->tm_min,ts->tm_sec); s->length=strlen(p); s->type=V_ASN1_GENERALIZEDTIME; #ifdef CHARSET_EBCDIC_not ebcdic2ascii(s->data, s->data, s->length); #endif return(s); }