/* crypto/asn1/a_utctm.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.] */ #include #include #include "cryptlib.h" #include "o_time.h" #include #if 0 int i2d_ASN1_UTCTIME(ASN1_UTCTIME *a, unsigned char **pp) { #ifndef CHARSET_EBCDIC return(i2d_ASN1_bytes((ASN1_STRING *)a,pp, V_ASN1_UTCTIME,V_ASN1_UNIVERSAL)); #else /* KLUDGE! We convert to ascii before writing DER */ int len; char tmp[24]; ASN1_STRING x = *(ASN1_STRING *)a; len = x.length; ebcdic2ascii(tmp, x.data, (len >= sizeof tmp) ? sizeof tmp : len); x.data = tmp; return i2d_ASN1_bytes(&x, pp, V_ASN1_UTCTIME,V_ASN1_UNIVERSAL); #endif } ASN1_UTCTIME *d2i_ASN1_UTCTIME(ASN1_UTCTIME **a, unsigned char **pp, long length) { ASN1_UTCTIME *ret=NULL; ret=(ASN1_UTCTIME *)d2i_ASN1_bytes((ASN1_STRING **)a,pp,length, V_ASN1_UTCTIME,V_ASN1_UNIVERSAL); if (ret == NULL) { ASN1err(ASN1_F_D2I_ASN1_UTCTIME,ERR_R_NESTED_ASN1_ERROR); return(NULL); } #ifdef CHARSET_EBCDIC ascii2ebcdic(ret->data, ret->data, ret->length); #endif if (!ASN1_UTCTIME_check(ret)) { ASN1err(ASN1_F_D2I_ASN1_UTCTIME,ASN1_R_INVALID_TIME_FORMAT); goto err; } return(ret); err: if ((ret != NULL) && ((a == NULL) || (*a != ret))) M_ASN1_UTCTIME_free(ret); return(NULL); } #endif int ASN1_UTCTIME_check(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++; 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=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; o++; } } return(o == l); err: return(0); } 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) { char *p; struct tm *ts; struct tm data; size_t len = 20; if (s == NULL) s=M_ASN1_UTCTIME_new(); if (s == NULL) return(NULL); ts=OPENSSL_gmtime(&t, &data); if (ts == NULL) return(NULL); p=(char *)s->data; if ((p == NULL) || ((size_t)s->length < len)) { p=OPENSSL_malloc(len); if (p == NULL) { ASN1err(ASN1_F_ASN1_UTCTIME_SET,ERR_R_MALLOC_FAILURE); return(NULL); } 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; #ifdef CHARSET_EBCDIC_not ebcdic2ascii(s->data, s->data, s->length); #endif return(s); } int ASN1_UTCTIME_cmp_time_t(const ASN1_UTCTIME *s, time_t t) { struct tm *tm; struct tm data; int offset; int year; #define g2(p) (((p)[0]-'0')*10+(p)[1]-'0') if (s->data[12] == 'Z') offset=0; else { offset = g2(s->data+13)*60+g2(s->data+15); if (s->data[12] == '-') offset = -offset; } t -= offset*60; /* FIXME: may overflow in extreme cases */ tm = OPENSSL_gmtime(&t, &data); #define return_cmp(a,b) if ((a)<(b)) return -1; else if ((a)>(b)) return 1 year = g2(s->data); if (year < 50) year += 100; return_cmp(year, tm->tm_year); return_cmp(g2(s->data+2) - 1, tm->tm_mon); return_cmp(g2(s->data+4), tm->tm_mday); return_cmp(g2(s->data+6), tm->tm_hour); return_cmp(g2(s->data+8), tm->tm_min); return_cmp(g2(s->data+10), tm->tm_sec); #undef g2 #undef return_cmp 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