Line data Source code
1 : /* crypto/asn1/a_gentm.c */
2 : /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 : * All rights reserved.
4 : *
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.
8 : *
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).
15 : *
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.
22 : *
23 : * Redistribution and use in source and binary forms, with or without
24 : * modification, are permitted provided that the following conditions
25 : * are met:
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)"
40 : *
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
51 : * SUCH DAMAGE.
52 : *
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.]
57 : */
58 :
59 : /*
60 : * GENERALIZEDTIME implementation, written by Steve Henson. Based on UTCTIME
61 : */
62 :
63 : #include <stdio.h>
64 : #include <time.h>
65 : #include "cryptlib.h"
66 : #include "o_time.h"
67 : #include <openssl/asn1.h>
68 : #include "asn1_locl.h"
69 :
70 : #if 0
71 :
72 : int i2d_ASN1_GENERALIZEDTIME(ASN1_GENERALIZEDTIME *a, unsigned char **pp)
73 : {
74 : # ifdef CHARSET_EBCDIC
75 : /* KLUDGE! We convert to ascii before writing DER */
76 : int len;
77 : char tmp[24];
78 : ASN1_STRING tmpstr = *(ASN1_STRING *)a;
79 :
80 : len = tmpstr.length;
81 : ebcdic2ascii(tmp, tmpstr.data, (len >= sizeof tmp) ? sizeof tmp : len);
82 : tmpstr.data = tmp;
83 :
84 : a = (ASN1_GENERALIZEDTIME *)&tmpstr;
85 : # endif
86 : return (i2d_ASN1_bytes((ASN1_STRING *)a, pp,
87 : V_ASN1_GENERALIZEDTIME, V_ASN1_UNIVERSAL));
88 : }
89 :
90 : ASN1_GENERALIZEDTIME *d2i_ASN1_GENERALIZEDTIME(ASN1_GENERALIZEDTIME **a,
91 : unsigned char **pp,
92 : long length)
93 : {
94 : ASN1_GENERALIZEDTIME *ret = NULL;
95 :
96 : ret =
97 : (ASN1_GENERALIZEDTIME *)d2i_ASN1_bytes((ASN1_STRING **)a, pp, length,
98 : V_ASN1_GENERALIZEDTIME,
99 : V_ASN1_UNIVERSAL);
100 : if (ret == NULL) {
101 : ASN1err(ASN1_F_D2I_ASN1_GENERALIZEDTIME, ERR_R_NESTED_ASN1_ERROR);
102 : return (NULL);
103 : }
104 : # ifdef CHARSET_EBCDIC
105 : ascii2ebcdic(ret->data, ret->data, ret->length);
106 : # endif
107 : if (!ASN1_GENERALIZEDTIME_check(ret)) {
108 : ASN1err(ASN1_F_D2I_ASN1_GENERALIZEDTIME, ASN1_R_INVALID_TIME_FORMAT);
109 : goto err;
110 : }
111 :
112 : return (ret);
113 : err:
114 : if ((ret != NULL) && ((a == NULL) || (*a != ret)))
115 : M_ASN1_GENERALIZEDTIME_free(ret);
116 : return (NULL);
117 : }
118 :
119 : #endif
120 :
121 0 : int asn1_generalizedtime_to_tm(struct tm *tm, const ASN1_GENERALIZEDTIME *d)
122 : {
123 : static const int min[9] = { 0, 0, 1, 1, 0, 0, 0, 0, 0 };
124 : static const int max[9] = { 99, 99, 12, 31, 23, 59, 59, 12, 59 };
125 : char *a;
126 : int n, i, l, o;
127 :
128 0 : if (d->type != V_ASN1_GENERALIZEDTIME)
129 : return (0);
130 0 : l = d->length;
131 0 : a = (char *)d->data;
132 : o = 0;
133 : /*
134 : * GENERALIZEDTIME is similar to UTCTIME except the year is represented
135 : * as YYYY. This stuff treats everything as a two digit field so make
136 : * first two fields 00 to 99
137 : */
138 0 : if (l < 13)
139 : goto err;
140 0 : for (i = 0; i < 7; i++) {
141 0 : if ((i == 6) && ((a[o] == 'Z') || (a[o] == '+') || (a[o] == '-'))) {
142 : i++;
143 0 : if (tm)
144 0 : tm->tm_sec = 0;
145 : break;
146 : }
147 0 : if ((a[o] < '0') || (a[o] > '9'))
148 : goto err;
149 0 : n = a[o] - '0';
150 0 : if (++o > l)
151 : goto err;
152 :
153 0 : if ((a[o] < '0') || (a[o] > '9'))
154 : goto err;
155 0 : n = (n * 10) + a[o] - '0';
156 0 : if (++o > l)
157 : goto err;
158 :
159 0 : if ((n < min[i]) || (n > max[i]))
160 : goto err;
161 0 : if (tm) {
162 0 : switch (i) {
163 : case 0:
164 0 : tm->tm_year = n * 100 - 1900;
165 0 : break;
166 : case 1:
167 0 : tm->tm_year += n;
168 0 : break;
169 : case 2:
170 0 : tm->tm_mon = n - 1;
171 0 : break;
172 : case 3:
173 0 : tm->tm_mday = n;
174 0 : break;
175 : case 4:
176 0 : tm->tm_hour = n;
177 0 : break;
178 : case 5:
179 0 : tm->tm_min = n;
180 0 : break;
181 : case 6:
182 0 : tm->tm_sec = n;
183 0 : break;
184 : }
185 : }
186 : }
187 : /*
188 : * Optional fractional seconds: decimal point followed by one or more
189 : * digits.
190 : */
191 0 : if (a[o] == '.') {
192 0 : if (++o > l)
193 : goto err;
194 : i = o;
195 0 : while ((a[o] >= '0') && (a[o] <= '9') && (o <= l))
196 0 : o++;
197 : /* Must have at least one digit after decimal point */
198 0 : if (i == o)
199 : goto err;
200 : }
201 :
202 0 : if (a[o] == 'Z')
203 0 : o++;
204 0 : else if ((a[o] == '+') || (a[o] == '-')) {
205 0 : int offsign = a[o] == '-' ? -1 : 1, offset = 0;
206 0 : o++;
207 0 : if (o + 4 > l)
208 : goto err;
209 0 : for (i = 7; i < 9; i++) {
210 0 : if ((a[o] < '0') || (a[o] > '9'))
211 : goto err;
212 0 : n = a[o] - '0';
213 0 : o++;
214 0 : if ((a[o] < '0') || (a[o] > '9'))
215 : goto err;
216 0 : n = (n * 10) + a[o] - '0';
217 0 : if ((n < min[i]) || (n > max[i]))
218 : goto err;
219 0 : if (tm) {
220 0 : if (i == 7)
221 0 : offset = n * 3600;
222 0 : else if (i == 8)
223 0 : offset += n * 60;
224 : }
225 0 : o++;
226 : }
227 0 : if (offset && !OPENSSL_gmtime_adj(tm, 0, offset * offsign))
228 : return 0;
229 0 : } else if (a[o]) {
230 : /* Missing time zone information. */
231 : goto err;
232 : }
233 0 : return (o == l);
234 : err:
235 : return (0);
236 : }
237 :
238 0 : int ASN1_GENERALIZEDTIME_check(const ASN1_GENERALIZEDTIME *d)
239 : {
240 0 : return asn1_generalizedtime_to_tm(NULL, d);
241 : }
242 :
243 0 : int ASN1_GENERALIZEDTIME_set_string(ASN1_GENERALIZEDTIME *s, const char *str)
244 : {
245 : ASN1_GENERALIZEDTIME t;
246 :
247 0 : t.type = V_ASN1_GENERALIZEDTIME;
248 0 : t.length = strlen(str);
249 0 : t.data = (unsigned char *)str;
250 0 : if (ASN1_GENERALIZEDTIME_check(&t)) {
251 0 : if (s != NULL) {
252 0 : if (!ASN1_STRING_set((ASN1_STRING *)s,
253 : (unsigned char *)str, t.length))
254 : return 0;
255 0 : s->type = V_ASN1_GENERALIZEDTIME;
256 : }
257 : return (1);
258 : } else
259 : return (0);
260 : }
261 :
262 0 : ASN1_GENERALIZEDTIME *ASN1_GENERALIZEDTIME_set(ASN1_GENERALIZEDTIME *s,
263 : time_t t)
264 : {
265 0 : return ASN1_GENERALIZEDTIME_adj(s, t, 0, 0);
266 : }
267 :
268 0 : ASN1_GENERALIZEDTIME *ASN1_GENERALIZEDTIME_adj(ASN1_GENERALIZEDTIME *s,
269 : time_t t, int offset_day,
270 : long offset_sec)
271 : {
272 : char *p;
273 : struct tm *ts;
274 : struct tm data;
275 : size_t len = 20;
276 :
277 0 : if (s == NULL)
278 0 : s = M_ASN1_GENERALIZEDTIME_new();
279 0 : if (s == NULL)
280 : return (NULL);
281 :
282 0 : ts = OPENSSL_gmtime(&t, &data);
283 0 : if (ts == NULL)
284 : return (NULL);
285 :
286 0 : if (offset_day || offset_sec) {
287 0 : if (!OPENSSL_gmtime_adj(ts, offset_day, offset_sec))
288 : return NULL;
289 : }
290 :
291 0 : p = (char *)s->data;
292 0 : if ((p == NULL) || ((size_t)s->length < len)) {
293 0 : p = OPENSSL_malloc(len);
294 0 : if (p == NULL) {
295 0 : ASN1err(ASN1_F_ASN1_GENERALIZEDTIME_ADJ, ERR_R_MALLOC_FAILURE);
296 0 : return (NULL);
297 : }
298 0 : if (s->data != NULL)
299 0 : OPENSSL_free(s->data);
300 0 : s->data = (unsigned char *)p;
301 : }
302 :
303 0 : BIO_snprintf(p, len, "%04d%02d%02d%02d%02d%02dZ", ts->tm_year + 1900,
304 0 : ts->tm_mon + 1, ts->tm_mday, ts->tm_hour, ts->tm_min,
305 : ts->tm_sec);
306 0 : s->length = strlen(p);
307 0 : s->type = V_ASN1_GENERALIZEDTIME;
308 : #ifdef CHARSET_EBCDIC_not
309 : ebcdic2ascii(s->data, s->data, s->length);
310 : #endif
311 0 : return (s);
312 : }
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