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f6aed2cd DSH |
1 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
2 | * All rights reserved. | |
3 | * | |
4 | * This package is an SSL implementation written | |
5 | * by Eric Young (eay@cryptsoft.com). | |
6 | * The implementation was written so as to conform with Netscapes SSL. | |
0f113f3e | 7 | * |
f6aed2cd DSH |
8 | * This library is free for commercial and non-commercial use as long as |
9 | * the following conditions are aheared to. The following conditions | |
10 | * apply to all code found in this distribution, be it the RC4, RSA, | |
11 | * lhash, DES, etc., code; not just the SSL code. The SSL documentation | |
12 | * included with this distribution is covered by the same copyright terms | |
13 | * except that the holder is Tim Hudson (tjh@cryptsoft.com). | |
0f113f3e | 14 | * |
f6aed2cd DSH |
15 | * Copyright remains Eric Young's, and as such any Copyright notices in |
16 | * the code are not to be removed. | |
17 | * If this package is used in a product, Eric Young should be given attribution | |
18 | * as the author of the parts of the library used. | |
19 | * This can be in the form of a textual message at program startup or | |
20 | * in documentation (online or textual) provided with the package. | |
0f113f3e | 21 | * |
f6aed2cd DSH |
22 | * Redistribution and use in source and binary forms, with or without |
23 | * modification, are permitted provided that the following conditions | |
24 | * are met: | |
25 | * 1. Redistributions of source code must retain the copyright | |
26 | * notice, this list of conditions and the following disclaimer. | |
27 | * 2. Redistributions in binary form must reproduce the above copyright | |
28 | * notice, this list of conditions and the following disclaimer in the | |
29 | * documentation and/or other materials provided with the distribution. | |
30 | * 3. All advertising materials mentioning features or use of this software | |
31 | * must display the following acknowledgement: | |
32 | * "This product includes cryptographic software written by | |
33 | * Eric Young (eay@cryptsoft.com)" | |
34 | * The word 'cryptographic' can be left out if the rouines from the library | |
35 | * being used are not cryptographic related :-). | |
0f113f3e | 36 | * 4. If you include any Windows specific code (or a derivative thereof) from |
f6aed2cd DSH |
37 | * the apps directory (application code) you must include an acknowledgement: |
38 | * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" | |
0f113f3e | 39 | * |
f6aed2cd DSH |
40 | * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND |
41 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
42 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
43 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | |
44 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
45 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
46 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
47 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
48 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
49 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
50 | * SUCH DAMAGE. | |
0f113f3e | 51 | * |
f6aed2cd DSH |
52 | * The licence and distribution terms for any publically available version or |
53 | * derivative of this code cannot be changed. i.e. this code cannot simply be | |
54 | * copied and put under another distribution licence | |
55 | * [including the GNU Public Licence.] | |
56 | */ | |
57 | ||
0f113f3e MC |
58 | /* |
59 | * GENERALIZEDTIME implementation, written by Steve Henson. Based on UTCTIME | |
60 | */ | |
f6aed2cd DSH |
61 | |
62 | #include <stdio.h> | |
63 | #include <time.h> | |
b39fc560 | 64 | #include "internal/cryptlib.h" |
ec577822 | 65 | #include <openssl/asn1.h> |
1c455bc0 | 66 | #include "asn1_locl.h" |
f6aed2cd | 67 | |
1c455bc0 | 68 | int asn1_generalizedtime_to_tm(struct tm *tm, const ASN1_GENERALIZEDTIME *d) |
0f113f3e MC |
69 | { |
70 | static const int min[9] = { 0, 0, 1, 1, 0, 0, 0, 0, 0 }; | |
71 | static const int max[9] = { 99, 99, 12, 31, 23, 59, 59, 12, 59 }; | |
72 | char *a; | |
73 | int n, i, l, o; | |
f6aed2cd | 74 | |
0f113f3e MC |
75 | if (d->type != V_ASN1_GENERALIZEDTIME) |
76 | return (0); | |
77 | l = d->length; | |
78 | a = (char *)d->data; | |
79 | o = 0; | |
80 | /* | |
81 | * GENERALIZEDTIME is similar to UTCTIME except the year is represented | |
82 | * as YYYY. This stuff treats everything as a two digit field so make | |
83 | * first two fields 00 to 99 | |
84 | */ | |
85 | if (l < 13) | |
86 | goto err; | |
87 | for (i = 0; i < 7; i++) { | |
88 | if ((i == 6) && ((a[o] == 'Z') || (a[o] == '+') || (a[o] == '-'))) { | |
89 | i++; | |
90 | if (tm) | |
91 | tm->tm_sec = 0; | |
92 | break; | |
93 | } | |
94 | if ((a[o] < '0') || (a[o] > '9')) | |
95 | goto err; | |
96 | n = a[o] - '0'; | |
97 | if (++o > l) | |
98 | goto err; | |
f6aed2cd | 99 | |
0f113f3e MC |
100 | if ((a[o] < '0') || (a[o] > '9')) |
101 | goto err; | |
102 | n = (n * 10) + a[o] - '0'; | |
103 | if (++o > l) | |
104 | goto err; | |
f6aed2cd | 105 | |
0f113f3e MC |
106 | if ((n < min[i]) || (n > max[i])) |
107 | goto err; | |
108 | if (tm) { | |
109 | switch (i) { | |
110 | case 0: | |
111 | tm->tm_year = n * 100 - 1900; | |
112 | break; | |
113 | case 1: | |
114 | tm->tm_year += n; | |
115 | break; | |
116 | case 2: | |
117 | tm->tm_mon = n - 1; | |
118 | break; | |
119 | case 3: | |
120 | tm->tm_mday = n; | |
121 | break; | |
122 | case 4: | |
123 | tm->tm_hour = n; | |
124 | break; | |
125 | case 5: | |
126 | tm->tm_min = n; | |
127 | break; | |
128 | case 6: | |
129 | tm->tm_sec = n; | |
130 | break; | |
131 | } | |
132 | } | |
133 | } | |
134 | /* | |
135 | * Optional fractional seconds: decimal point followed by one or more | |
136 | * digits. | |
137 | */ | |
138 | if (a[o] == '.') { | |
139 | if (++o > l) | |
140 | goto err; | |
141 | i = o; | |
142 | while ((a[o] >= '0') && (a[o] <= '9') && (o <= l)) | |
143 | o++; | |
144 | /* Must have at least one digit after decimal point */ | |
145 | if (i == o) | |
146 | goto err; | |
147 | } | |
d46c1a81 | 148 | |
0f113f3e MC |
149 | if (a[o] == 'Z') |
150 | o++; | |
151 | else if ((a[o] == '+') || (a[o] == '-')) { | |
152 | int offsign = a[o] == '-' ? -1 : 1, offset = 0; | |
153 | o++; | |
154 | if (o + 4 > l) | |
155 | goto err; | |
156 | for (i = 7; i < 9; i++) { | |
157 | if ((a[o] < '0') || (a[o] > '9')) | |
158 | goto err; | |
159 | n = a[o] - '0'; | |
160 | o++; | |
161 | if ((a[o] < '0') || (a[o] > '9')) | |
162 | goto err; | |
163 | n = (n * 10) + a[o] - '0'; | |
164 | if ((n < min[i]) || (n > max[i])) | |
165 | goto err; | |
166 | if (tm) { | |
167 | if (i == 7) | |
168 | offset = n * 3600; | |
169 | else if (i == 8) | |
170 | offset += n * 60; | |
171 | } | |
172 | o++; | |
173 | } | |
174 | if (offset && !OPENSSL_gmtime_adj(tm, 0, offset * offsign)) | |
175 | return 0; | |
176 | } else if (a[o]) { | |
177 | /* Missing time zone information. */ | |
178 | goto err; | |
179 | } | |
180 | return (o == l); | |
181 | err: | |
182 | return (0); | |
183 | } | |
f6aed2cd | 184 | |
1c455bc0 | 185 | int ASN1_GENERALIZEDTIME_check(const ASN1_GENERALIZEDTIME *d) |
0f113f3e MC |
186 | { |
187 | return asn1_generalizedtime_to_tm(NULL, d); | |
188 | } | |
1c455bc0 | 189 | |
875a644a | 190 | int ASN1_GENERALIZEDTIME_set_string(ASN1_GENERALIZEDTIME *s, const char *str) |
0f113f3e MC |
191 | { |
192 | ASN1_GENERALIZEDTIME t; | |
f6aed2cd | 193 | |
0f113f3e MC |
194 | t.type = V_ASN1_GENERALIZEDTIME; |
195 | t.length = strlen(str); | |
196 | t.data = (unsigned char *)str; | |
197 | if (ASN1_GENERALIZEDTIME_check(&t)) { | |
198 | if (s != NULL) { | |
199 | if (!ASN1_STRING_set((ASN1_STRING *)s, | |
200 | (unsigned char *)str, t.length)) | |
201 | return 0; | |
202 | s->type = V_ASN1_GENERALIZEDTIME; | |
203 | } | |
204 | return (1); | |
205 | } else | |
206 | return (0); | |
207 | } | |
f6aed2cd | 208 | |
6b691a5c | 209 | ASN1_GENERALIZEDTIME *ASN1_GENERALIZEDTIME_set(ASN1_GENERALIZEDTIME *s, |
0f113f3e MC |
210 | time_t t) |
211 | { | |
212 | return ASN1_GENERALIZEDTIME_adj(s, t, 0, 0); | |
213 | } | |
87d3a0cd DSH |
214 | |
215 | ASN1_GENERALIZEDTIME *ASN1_GENERALIZEDTIME_adj(ASN1_GENERALIZEDTIME *s, | |
0f113f3e MC |
216 | time_t t, int offset_day, |
217 | long offset_sec) | |
218 | { | |
219 | char *p; | |
220 | struct tm *ts; | |
221 | struct tm data; | |
222 | size_t len = 20; | |
f6aed2cd | 223 | |
0f113f3e | 224 | if (s == NULL) |
f422a514 | 225 | s = ASN1_GENERALIZEDTIME_new(); |
0f113f3e MC |
226 | if (s == NULL) |
227 | return (NULL); | |
f6aed2cd | 228 | |
0f113f3e MC |
229 | ts = OPENSSL_gmtime(&t, &data); |
230 | if (ts == NULL) | |
231 | return (NULL); | |
b8e35bd6 | 232 | |
0f113f3e MC |
233 | if (offset_day || offset_sec) { |
234 | if (!OPENSSL_gmtime_adj(ts, offset_day, offset_sec)) | |
235 | return NULL; | |
236 | } | |
87d3a0cd | 237 | |
0f113f3e MC |
238 | p = (char *)s->data; |
239 | if ((p == NULL) || ((size_t)s->length < len)) { | |
240 | p = OPENSSL_malloc(len); | |
241 | if (p == NULL) { | |
242 | ASN1err(ASN1_F_ASN1_GENERALIZEDTIME_ADJ, ERR_R_MALLOC_FAILURE); | |
243 | return (NULL); | |
244 | } | |
b548a1f1 | 245 | OPENSSL_free(s->data); |
0f113f3e MC |
246 | s->data = (unsigned char *)p; |
247 | } | |
f6aed2cd | 248 | |
0f113f3e MC |
249 | BIO_snprintf(p, len, "%04d%02d%02d%02d%02d%02dZ", ts->tm_year + 1900, |
250 | ts->tm_mon + 1, ts->tm_mday, ts->tm_hour, ts->tm_min, | |
251 | ts->tm_sec); | |
252 | s->length = strlen(p); | |
253 | s->type = V_ASN1_GENERALIZEDTIME; | |
a53955d8 | 254 | #ifdef CHARSET_EBCDIC_not |
0f113f3e | 255 | ebcdic2ascii(s->data, s->data, s->length); |
a53955d8 | 256 | #endif |
0f113f3e MC |
257 | return (s); |
258 | } | |
0d0099ea DSH |
259 | |
260 | const char *_asn1_mon[12] = { | |
261 | "Jan", "Feb", "Mar", "Apr", "May", "Jun", | |
262 | "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" | |
263 | }; | |
264 | ||
265 | int ASN1_GENERALIZEDTIME_print(BIO *bp, const ASN1_GENERALIZEDTIME *tm) | |
266 | { | |
267 | char *v; | |
268 | int gmt = 0; | |
269 | int i; | |
270 | int y = 0, M = 0, d = 0, h = 0, m = 0, s = 0; | |
271 | char *f = NULL; | |
272 | int f_len = 0; | |
273 | ||
274 | i = tm->length; | |
275 | v = (char *)tm->data; | |
276 | ||
277 | if (i < 12) | |
278 | goto err; | |
279 | if (v[i - 1] == 'Z') | |
280 | gmt = 1; | |
281 | for (i = 0; i < 12; i++) | |
282 | if ((v[i] > '9') || (v[i] < '0')) | |
283 | goto err; | |
284 | y = (v[0] - '0') * 1000 + (v[1] - '0') * 100 | |
285 | + (v[2] - '0') * 10 + (v[3] - '0'); | |
286 | M = (v[4] - '0') * 10 + (v[5] - '0'); | |
287 | if ((M > 12) || (M < 1)) | |
288 | goto err; | |
289 | d = (v[6] - '0') * 10 + (v[7] - '0'); | |
290 | h = (v[8] - '0') * 10 + (v[9] - '0'); | |
291 | m = (v[10] - '0') * 10 + (v[11] - '0'); | |
292 | if (tm->length >= 14 && | |
293 | (v[12] >= '0') && (v[12] <= '9') && | |
294 | (v[13] >= '0') && (v[13] <= '9')) { | |
295 | s = (v[12] - '0') * 10 + (v[13] - '0'); | |
296 | /* Check for fractions of seconds. */ | |
297 | if (tm->length >= 15 && v[14] == '.') { | |
298 | int l = tm->length; | |
299 | f = &v[14]; /* The decimal point. */ | |
300 | f_len = 1; | |
301 | while (14 + f_len < l && f[f_len] >= '0' && f[f_len] <= '9') | |
302 | ++f_len; | |
303 | } | |
304 | } | |
305 | ||
306 | if (BIO_printf(bp, "%s %2d %02d:%02d:%02d%.*s %d%s", | |
307 | _asn1_mon[M - 1], d, h, m, s, f_len, f, y, | |
308 | (gmt) ? " GMT" : "") <= 0) | |
309 | return (0); | |
310 | else | |
311 | return (1); | |
312 | err: | |
313 | BIO_write(bp, "Bad time value", 14); | |
314 | return (0); | |
315 | } |