1 /* crypto/asn1/a_utctm.c */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
62 #include <openssl/asn1.h>
63 #include "asn1_locl.h"
66 int i2d_ASN1_UTCTIME(ASN1_UTCTIME *a, unsigned char **pp)
68 #ifndef CHARSET_EBCDIC
69 return(i2d_ASN1_bytes((ASN1_STRING *)a,pp,
70 V_ASN1_UTCTIME,V_ASN1_UNIVERSAL));
72 /* KLUDGE! We convert to ascii before writing DER */
75 ASN1_STRING x = *(ASN1_STRING *)a;
78 ebcdic2ascii(tmp, x.data, (len >= sizeof tmp) ? sizeof tmp : len);
80 return i2d_ASN1_bytes(&x, pp, V_ASN1_UTCTIME,V_ASN1_UNIVERSAL);
85 ASN1_UTCTIME *d2i_ASN1_UTCTIME(ASN1_UTCTIME **a, unsigned char **pp,
88 ASN1_UTCTIME *ret=NULL;
90 ret=(ASN1_UTCTIME *)d2i_ASN1_bytes((ASN1_STRING **)a,pp,length,
91 V_ASN1_UTCTIME,V_ASN1_UNIVERSAL);
94 ASN1err(ASN1_F_D2I_ASN1_UTCTIME,ERR_R_NESTED_ASN1_ERROR);
98 ascii2ebcdic(ret->data, ret->data, ret->length);
100 if (!ASN1_UTCTIME_check(ret))
102 ASN1err(ASN1_F_D2I_ASN1_UTCTIME,ASN1_R_INVALID_TIME_FORMAT);
108 if ((ret != NULL) && ((a == NULL) || (*a != ret)))
109 M_ASN1_UTCTIME_free(ret);
115 int asn1_utctime_to_tm(struct tm *tm, const ASN1_UTCTIME *d)
117 static const int min[8]={ 0, 1, 1, 0, 0, 0, 0, 0};
118 static const int max[8]={99,12,31,23,59,59,12,59};
122 if (d->type != V_ASN1_UTCTIME) return(0);
127 if (l < 11) goto err;
130 if ((i == 5) && ((a[o] == 'Z') ||
131 (a[o] == '+') || (a[o] == '-')))
138 if ((a[o] < '0') || (a[o] > '9')) goto err;
140 if (++o > l) goto err;
142 if ((a[o] < '0') || (a[o] > '9')) goto err;
144 if (++o > l) goto err;
146 if ((n < min[i]) || (n > max[i])) goto err;
152 tm->tm_year = n < 50 ? n + 100 : n;
174 else if ((a[o] == '+') || (a[o] == '-'))
176 int offsign = a[o] == '-' ? -1 : 1, offset = 0;
178 if (o+4 > l) goto err;
181 if ((a[o] < '0') || (a[o] > '9')) goto err;
184 if ((a[o] < '0') || (a[o] > '9')) goto err;
186 if ((n < min[i]) || (n > max[i])) goto err;
196 if (offset && !OPENSSL_gmtime_adj(tm, 0, offset * offsign))
204 int ASN1_UTCTIME_check(const ASN1_UTCTIME *d)
206 return asn1_utctime_to_tm(NULL, d);
209 int ASN1_UTCTIME_set_string(ASN1_UTCTIME *s, const char *str)
213 t.type=V_ASN1_UTCTIME;
214 t.length=strlen(str);
215 t.data=(unsigned char *)str;
216 if (ASN1_UTCTIME_check(&t))
220 if (!ASN1_STRING_set((ASN1_STRING *)s,
221 (unsigned char *)str,t.length))
223 s->type = V_ASN1_UTCTIME;
231 ASN1_UTCTIME *ASN1_UTCTIME_set(ASN1_UTCTIME *s, time_t t)
233 return ASN1_UTCTIME_adj(s, t, 0, 0);
236 ASN1_UTCTIME *ASN1_UTCTIME_adj(ASN1_UTCTIME *s, time_t t,
237 int offset_day, long offset_sec)
248 s=M_ASN1_UTCTIME_new();
254 ts=OPENSSL_gmtime(&t, &data);
258 if (offset_day || offset_sec)
260 if (!OPENSSL_gmtime_adj(ts, offset_day, offset_sec))
264 if((ts->tm_year < 50) || (ts->tm_year >= 150))
268 if ((p == NULL) || ((size_t)s->length < len))
270 p=OPENSSL_malloc(len);
273 ASN1err(ASN1_F_ASN1_UTCTIME_ADJ,ERR_R_MALLOC_FAILURE);
277 OPENSSL_free(s->data);
278 s->data=(unsigned char *)p;
281 BIO_snprintf(p,len,"%02d%02d%02d%02d%02d%02dZ",ts->tm_year%100,
282 ts->tm_mon+1,ts->tm_mday,ts->tm_hour,ts->tm_min,ts->tm_sec);
284 s->type=V_ASN1_UTCTIME;
285 #ifdef CHARSET_EBCDIC_not
286 ebcdic2ascii(s->data, s->data, s->length);
291 M_ASN1_UTCTIME_free(s);
296 int ASN1_UTCTIME_cmp_time_t(const ASN1_UTCTIME *s, time_t t)
301 if (!asn1_utctime_to_tm(&stm, s))
304 if (!OPENSSL_gmtime(&t, &ttm))
307 if (!OPENSSL_gmtime_diff(&day, &sec, &stm, &ttm))
323 time_t ASN1_UTCTIME_get(const ASN1_UTCTIME *s)
328 memset(&tm,'\0',sizeof tm);
330 #define g2(p) (((p)[0]-'0')*10+(p)[1]-'0')
331 tm.tm_year=g2(s->data);
334 tm.tm_mon=g2(s->data+2)-1;
335 tm.tm_mday=g2(s->data+4);
336 tm.tm_hour=g2(s->data+6);
337 tm.tm_min=g2(s->data+8);
338 tm.tm_sec=g2(s->data+10);
339 if(s->data[12] == 'Z')
343 offset=g2(s->data+13)*60+g2(s->data+15);
344 if(s->data[12] == '-')
349 return mktime(&tm)-offset*60; /* FIXME: mktime assumes the current timezone
350 * instead of UTC, and unless we rewrite OpenSSL
351 * in Lisp we cannot locally change the timezone
352 * without possibly interfering with other parts
353 * of the program. timegm, which uses UTC, is
355 * Also time_t is inappropriate for general
356 * UTC times because it may a 32 bit type. */