mirror of
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319 lines
8.6 KiB
C
319 lines
8.6 KiB
C
/* crypto/asn1/a_utctm.c */
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/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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* All rights reserved.
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*
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* This package is an SSL implementation written
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* by Eric Young (eay@cryptsoft.com).
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* The implementation was written so as to conform with Netscapes SSL.
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*
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* This library is free for commercial and non-commercial use as long as
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* the following conditions are aheared to. The following conditions
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* apply to all code found in this distribution, be it the RC4, RSA,
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* lhash, DES, etc., code; not just the SSL code. The SSL documentation
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* included with this distribution is covered by the same copyright terms
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* except that the holder is Tim Hudson (tjh@cryptsoft.com).
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*
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* Copyright remains Eric Young's, and as such any Copyright notices in
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* the code are not to be removed.
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* If this package is used in a product, Eric Young should be given attribution
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* as the author of the parts of the library used.
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* This can be in the form of a textual message at program startup or
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* in documentation (online or textual) provided with the package.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* "This product includes cryptographic software written by
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* Eric Young (eay@cryptsoft.com)"
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* The word 'cryptographic' can be left out if the rouines from the library
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* being used are not cryptographic related :-).
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* 4. If you include any Windows specific code (or a derivative thereof) from
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* the apps directory (application code) you must include an acknowledgement:
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* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
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*
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* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* The licence and distribution terms for any publically available version or
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* derivative of this code cannot be changed. i.e. this code cannot simply be
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* copied and put under another distribution licence
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* [including the GNU Public Licence.]
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*/
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#include <stdio.h>
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#include <time.h>
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#include "cryptlib.h"
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#include "o_time.h"
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#include <openssl/asn1.h>
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#if 0
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int i2d_ASN1_UTCTIME(ASN1_UTCTIME *a, unsigned char **pp)
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{
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#ifndef CHARSET_EBCDIC
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return(i2d_ASN1_bytes((ASN1_STRING *)a,pp,
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V_ASN1_UTCTIME,V_ASN1_UNIVERSAL));
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#else
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/* KLUDGE! We convert to ascii before writing DER */
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int len;
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char tmp[24];
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ASN1_STRING x = *(ASN1_STRING *)a;
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len = x.length;
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ebcdic2ascii(tmp, x.data, (len >= sizeof tmp) ? sizeof tmp : len);
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x.data = tmp;
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return i2d_ASN1_bytes(&x, pp, V_ASN1_UTCTIME,V_ASN1_UNIVERSAL);
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#endif
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}
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ASN1_UTCTIME *d2i_ASN1_UTCTIME(ASN1_UTCTIME **a, unsigned char **pp,
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long length)
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{
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ASN1_UTCTIME *ret=NULL;
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ret=(ASN1_UTCTIME *)d2i_ASN1_bytes((ASN1_STRING **)a,pp,length,
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V_ASN1_UTCTIME,V_ASN1_UNIVERSAL);
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if (ret == NULL)
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{
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ASN1err(ASN1_F_D2I_ASN1_UTCTIME,ERR_R_NESTED_ASN1_ERROR);
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return(NULL);
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}
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#ifdef CHARSET_EBCDIC
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ascii2ebcdic(ret->data, ret->data, ret->length);
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#endif
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if (!ASN1_UTCTIME_check(ret))
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{
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ASN1err(ASN1_F_D2I_ASN1_UTCTIME,ASN1_R_INVALID_TIME_FORMAT);
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goto err;
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}
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return(ret);
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err:
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if ((ret != NULL) && ((a == NULL) || (*a != ret)))
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M_ASN1_UTCTIME_free(ret);
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return(NULL);
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}
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#endif
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int ASN1_UTCTIME_check(ASN1_UTCTIME *d)
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{
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static const int min[8]={ 0, 1, 1, 0, 0, 0, 0, 0};
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static const int max[8]={99,12,31,23,59,59,12,59};
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char *a;
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int n,i,l,o;
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if (d->type != V_ASN1_UTCTIME) return(0);
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l=d->length;
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a=(char *)d->data;
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o=0;
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if (l < 11) goto err;
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for (i=0; i<6; i++)
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{
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if ((i == 5) && ((a[o] == 'Z') ||
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(a[o] == '+') || (a[o] == '-')))
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{ i++; break; }
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if ((a[o] < '0') || (a[o] > '9')) goto err;
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n= a[o]-'0';
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if (++o > l) goto err;
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if ((a[o] < '0') || (a[o] > '9')) goto err;
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n=(n*10)+ a[o]-'0';
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if (++o > l) goto err;
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if ((n < min[i]) || (n > max[i])) goto err;
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}
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if (a[o] == 'Z')
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o++;
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else if ((a[o] == '+') || (a[o] == '-'))
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{
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o++;
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if (o+4 > l) goto err;
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for (i=6; i<8; i++)
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{
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if ((a[o] < '0') || (a[o] > '9')) goto err;
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n= a[o]-'0';
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o++;
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if ((a[o] < '0') || (a[o] > '9')) goto err;
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n=(n*10)+ a[o]-'0';
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if ((n < min[i]) || (n > max[i])) goto err;
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o++;
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}
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}
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return(o == l);
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err:
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return(0);
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}
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int ASN1_UTCTIME_set_string(ASN1_UTCTIME *s, const char *str)
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{
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ASN1_UTCTIME t;
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t.type=V_ASN1_UTCTIME;
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t.length=strlen(str);
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t.data=(unsigned char *)str;
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if (ASN1_UTCTIME_check(&t))
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{
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if (s != NULL)
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{
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if (!ASN1_STRING_set((ASN1_STRING *)s,
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(unsigned char *)str,t.length))
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return 0;
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s->type = V_ASN1_UTCTIME;
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}
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return(1);
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}
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else
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return(0);
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}
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ASN1_UTCTIME *ASN1_UTCTIME_set(ASN1_UTCTIME *s, time_t t)
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{
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return ASN1_UTCTIME_adj(s, t, 0, 0);
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}
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ASN1_UTCTIME *ASN1_UTCTIME_adj(ASN1_UTCTIME *s, time_t t,
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int offset_day, long offset_sec)
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{
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char *p;
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struct tm *ts;
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struct tm data;
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size_t len = 20;
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if (s == NULL)
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s=M_ASN1_UTCTIME_new();
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if (s == NULL)
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return(NULL);
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ts=OPENSSL_gmtime(&t, &data);
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if (ts == NULL)
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return(NULL);
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if (offset_day || offset_sec)
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{
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if (!OPENSSL_gmtime_adj(ts, offset_day, offset_sec))
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return NULL;
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}
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if((ts->tm_year < 50) || (ts->tm_year >= 150))
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return NULL;
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p=(char *)s->data;
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if ((p == NULL) || ((size_t)s->length < len))
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{
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p=OPENSSL_malloc(len);
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if (p == NULL)
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{
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ASN1err(ASN1_F_ASN1_UTCTIME_ADJ,ERR_R_MALLOC_FAILURE);
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return(NULL);
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}
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if (s->data != NULL)
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OPENSSL_free(s->data);
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s->data=(unsigned char *)p;
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}
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BIO_snprintf(p,len,"%02d%02d%02d%02d%02d%02dZ",ts->tm_year%100,
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ts->tm_mon+1,ts->tm_mday,ts->tm_hour,ts->tm_min,ts->tm_sec);
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s->length=strlen(p);
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s->type=V_ASN1_UTCTIME;
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#ifdef CHARSET_EBCDIC_not
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ebcdic2ascii(s->data, s->data, s->length);
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#endif
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return(s);
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}
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int ASN1_UTCTIME_cmp_time_t(const ASN1_UTCTIME *s, time_t t)
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{
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struct tm *tm;
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struct tm data;
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int offset;
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int year;
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#define g2(p) (((p)[0]-'0')*10+(p)[1]-'0')
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if (s->data[12] == 'Z')
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offset=0;
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else
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{
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offset = g2(s->data+13)*60+g2(s->data+15);
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if (s->data[12] == '-')
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offset = -offset;
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}
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t -= offset*60; /* FIXME: may overflow in extreme cases */
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tm = OPENSSL_gmtime(&t, &data);
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#define return_cmp(a,b) if ((a)<(b)) return -1; else if ((a)>(b)) return 1
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year = g2(s->data);
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if (year < 50)
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year += 100;
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return_cmp(year, tm->tm_year);
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return_cmp(g2(s->data+2) - 1, tm->tm_mon);
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return_cmp(g2(s->data+4), tm->tm_mday);
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return_cmp(g2(s->data+6), tm->tm_hour);
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return_cmp(g2(s->data+8), tm->tm_min);
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return_cmp(g2(s->data+10), tm->tm_sec);
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#undef g2
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#undef return_cmp
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return 0;
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}
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#if 0
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time_t ASN1_UTCTIME_get(const ASN1_UTCTIME *s)
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{
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struct tm tm;
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int offset;
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memset(&tm,'\0',sizeof tm);
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#define g2(p) (((p)[0]-'0')*10+(p)[1]-'0')
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tm.tm_year=g2(s->data);
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if(tm.tm_year < 50)
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tm.tm_year+=100;
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tm.tm_mon=g2(s->data+2)-1;
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tm.tm_mday=g2(s->data+4);
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tm.tm_hour=g2(s->data+6);
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tm.tm_min=g2(s->data+8);
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tm.tm_sec=g2(s->data+10);
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if(s->data[12] == 'Z')
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offset=0;
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else
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{
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offset=g2(s->data+13)*60+g2(s->data+15);
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if(s->data[12] == '-')
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offset= -offset;
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}
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#undef g2
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return mktime(&tm)-offset*60; /* FIXME: mktime assumes the current timezone
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* instead of UTC, and unless we rewrite OpenSSL
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* in Lisp we cannot locally change the timezone
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* without possibly interfering with other parts
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* of the program. timegm, which uses UTC, is
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* non-standard.
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* Also time_t is inappropriate for general
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* UTC times because it may a 32 bit type. */
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}
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#endif
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