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.]
63 #include <openssl/asn1.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_check(ASN1_UTCTIME *d)
117 static int min[8]={ 0, 1, 1, 0, 0, 0, 0, 0};
118 static 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] == '-')))
133 if ((a[o] < '0') || (a[o] > '9')) goto err;
135 if (++o > l) goto err;
137 if ((a[o] < '0') || (a[o] > '9')) goto err;
139 if (++o > l) goto err;
141 if ((n < min[i]) || (n > max[i])) goto err;
145 else if ((a[o] == '+') || (a[o] == '-'))
148 if (o+4 > l) goto err;
151 if ((a[o] < '0') || (a[o] > '9')) goto err;
154 if ((a[o] < '0') || (a[o] > '9')) goto err;
156 if ((n < min[i]) || (n > max[i])) goto err;
165 int ASN1_UTCTIME_set_string(ASN1_UTCTIME *s, char *str)
169 t.type=V_ASN1_UTCTIME;
170 t.length=strlen(str);
171 t.data=(unsigned char *)str;
172 if (ASN1_UTCTIME_check(&t))
176 ASN1_STRING_set((ASN1_STRING *)s,
177 (unsigned char *)str,t.length);
178 s->type = V_ASN1_UTCTIME;
186 ASN1_UTCTIME *ASN1_UTCTIME_set(ASN1_UTCTIME *s, time_t t)
193 s=M_ASN1_UTCTIME_new();
197 ts=OPENSSL_gmtime(&t, &data);
202 if ((p == NULL) || (s->length < 14))
204 p=OPENSSL_malloc(20);
205 if (p == NULL) return(NULL);
207 OPENSSL_free(s->data);
208 s->data=(unsigned char *)p;
211 sprintf(p,"%02d%02d%02d%02d%02d%02dZ",ts->tm_year%100,
212 ts->tm_mon+1,ts->tm_mday,ts->tm_hour,ts->tm_min,ts->tm_sec);
214 s->type=V_ASN1_UTCTIME;
215 #ifdef CHARSET_EBCDIC_not
216 ebcdic2ascii(s->data, s->data, s->length);
222 int ASN1_UTCTIME_cmp_time_t(const ASN1_UTCTIME *s, time_t t)
228 #define g2(p) (((p)[0]-'0')*10+(p)[1]-'0')
230 if (s->data[12] == 'Z')
234 offset = g2(s->data+13)*60+g2(s->data+15);
235 if (s->data[12] == '-')
239 t -= offset*60; /* FIXME: may overflow in extreme cases */
241 { struct tm data; tm = OPENSSL_gmtime(&t, &data); }
243 #define return_cmp(a,b) if ((a)<(b)) return -1; else if ((a)>(b)) return 1
247 return_cmp(year, tm->tm_year);
248 return_cmp(g2(s->data+2) - 1, tm->tm_mon);
249 return_cmp(g2(s->data+4), tm->tm_mday);
250 return_cmp(g2(s->data+6), tm->tm_hour);
251 return_cmp(g2(s->data+8), tm->tm_min);
252 return_cmp(g2(s->data+10), tm->tm_sec);
261 time_t ASN1_UTCTIME_get(const ASN1_UTCTIME *s)
266 memset(&tm,'\0',sizeof tm);
268 #define g2(p) (((p)[0]-'0')*10+(p)[1]-'0')
269 tm.tm_year=g2(s->data);
272 tm.tm_mon=g2(s->data+2)-1;
273 tm.tm_mday=g2(s->data+4);
274 tm.tm_hour=g2(s->data+6);
275 tm.tm_min=g2(s->data+8);
276 tm.tm_sec=g2(s->data+10);
277 if(s->data[12] == 'Z')
281 offset=g2(s->data+13)*60+g2(s->data+15);
282 if(s->data[12] == '-')
287 return mktime(&tm)-offset*60; /* FIXME: mktime assumes the current timezone
288 * instead of UTC, and unless we rewrite OpenSSL
289 * in Lisp we cannot locally change the timezone
290 * without possibly interfering with other parts
291 * of the program. timegm, which uses UTC, is
293 * Also time_t is inappropriate for general
294 * UTC times because it may a 32 bit type. */