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);
84 ASN1_UTCTIME *d2i_ASN1_UTCTIME(ASN1_UTCTIME **a, unsigned char **pp,
87 ASN1_UTCTIME *ret = NULL;
89 ret = (ASN1_UTCTIME *)d2i_ASN1_bytes((ASN1_STRING **)a, pp, length,
90 V_ASN1_UTCTIME, V_ASN1_UNIVERSAL);
92 ASN1err(ASN1_F_D2I_ASN1_UTCTIME, ERR_R_NESTED_ASN1_ERROR);
95 # ifdef CHARSET_EBCDIC
96 ascii2ebcdic(ret->data, ret->data, ret->length);
98 if (!ASN1_UTCTIME_check(ret)) {
99 ASN1err(ASN1_F_D2I_ASN1_UTCTIME, ASN1_R_INVALID_TIME_FORMAT);
105 if ((ret != NULL) && ((a == NULL) || (*a != ret)))
106 M_ASN1_UTCTIME_free(ret);
112 int ASN1_UTCTIME_check(ASN1_UTCTIME *d)
114 static int min[8] = { 0, 1, 1, 0, 0, 0, 0, 0 };
115 static int max[8] = { 99, 12, 31, 23, 59, 59, 12, 59 };
119 if (d->type != V_ASN1_UTCTIME)
127 for (i = 0; i < 6; i++) {
128 if ((i == 5) && ((a[o] == 'Z') || (a[o] == '+') || (a[o] == '-'))) {
132 if ((a[o] < '0') || (a[o] > '9'))
138 if ((a[o] < '0') || (a[o] > '9'))
140 n = (n * 10) + a[o] - '0';
144 if ((n < min[i]) || (n > max[i]))
149 else if ((a[o] == '+') || (a[o] == '-')) {
153 for (i = 6; i < 8; i++) {
154 if ((a[o] < '0') || (a[o] > '9'))
158 if ((a[o] < '0') || (a[o] > '9'))
160 n = (n * 10) + a[o] - '0';
161 if ((n < min[i]) || (n > max[i]))
171 int ASN1_UTCTIME_set_string(ASN1_UTCTIME *s, const char *str)
175 t.type = V_ASN1_UTCTIME;
176 t.length = strlen(str);
177 t.data = (unsigned char *)str;
178 if (ASN1_UTCTIME_check(&t)) {
180 if (!ASN1_STRING_set((ASN1_STRING *)s,
181 (unsigned char *)str, t.length))
183 s->type = V_ASN1_UTCTIME;
190 ASN1_UTCTIME *ASN1_UTCTIME_set(ASN1_UTCTIME *s, time_t t)
198 s = M_ASN1_UTCTIME_new();
202 ts = OPENSSL_gmtime(&t, &data);
207 if ((p == NULL) || ((size_t)s->length < len)) {
208 p = OPENSSL_malloc(len);
210 ASN1err(ASN1_F_ASN1_UTCTIME_SET, ERR_R_MALLOC_FAILURE);
214 OPENSSL_free(s->data);
215 s->data = (unsigned char *)p;
218 BIO_snprintf(p, len, "%02d%02d%02d%02d%02d%02dZ", ts->tm_year % 100,
219 ts->tm_mon + 1, ts->tm_mday, ts->tm_hour, ts->tm_min,
221 s->length = strlen(p);
222 s->type = V_ASN1_UTCTIME;
223 #ifdef CHARSET_EBCDIC_not
224 ebcdic2ascii(s->data, s->data, s->length);
229 int ASN1_UTCTIME_cmp_time_t(const ASN1_UTCTIME *s, time_t t)
236 #define g2(p) (((p)[0]-'0')*10+(p)[1]-'0')
238 if (s->data[12] == 'Z')
241 offset = g2(s->data + 13) * 60 + g2(s->data + 15);
242 if (s->data[12] == '-')
246 t -= offset * 60; /* FIXME: may overflow in extreme cases */
248 tm = OPENSSL_gmtime(&t, &data);
250 #define return_cmp(a,b) if ((a)<(b)) return -1; else if ((a)>(b)) return 1
254 return_cmp(year, tm->tm_year);
255 return_cmp(g2(s->data + 2) - 1, tm->tm_mon);
256 return_cmp(g2(s->data + 4), tm->tm_mday);
257 return_cmp(g2(s->data + 6), tm->tm_hour);
258 return_cmp(g2(s->data + 8), tm->tm_min);
259 return_cmp(g2(s->data + 10), tm->tm_sec);
267 time_t ASN1_UTCTIME_get(const ASN1_UTCTIME *s)
272 memset(&tm, '\0', sizeof tm);
274 # define g2(p) (((p)[0]-'0')*10+(p)[1]-'0')
275 tm.tm_year = g2(s->data);
278 tm.tm_mon = g2(s->data + 2) - 1;
279 tm.tm_mday = g2(s->data + 4);
280 tm.tm_hour = g2(s->data + 6);
281 tm.tm_min = g2(s->data + 8);
282 tm.tm_sec = g2(s->data + 10);
283 if (s->data[12] == 'Z')
286 offset = g2(s->data + 13) * 60 + g2(s->data + 15);
287 if (s->data[12] == '-')
293 * FIXME: mktime assumes the current timezone
294 * instead of UTC, and unless we rewrite OpenSSL
295 * in Lisp we cannot locally change the timezone
296 * without possibly interfering with other parts
297 * of the program. timegm, which uses UTC, is
299 * Also time_t is inappropriate for general
300 * UTC times because it may a 32 bit type.
302 return mktime(&tm) - offset * 60;