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d02b48c6 | 1 | /* crypto/asn1/a_utctm.c */ |
58964a49 | 2 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
d02b48c6 RE |
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 | #include <stdio.h> | |
60 | #include <time.h> | |
7ab1a391 RL |
61 | #include "cryptlib.h" |
62 | #include <openssl/asn1.h> | |
1c455bc0 | 63 | #include "asn1_locl.h" |
d02b48c6 | 64 | |
9d6b1ce6 | 65 | #if 0 |
6b691a5c | 66 | int i2d_ASN1_UTCTIME(ASN1_UTCTIME *a, unsigned char **pp) |
d02b48c6 | 67 | { |
a53955d8 | 68 | #ifndef CHARSET_EBCDIC |
d02b48c6 RE |
69 | return(i2d_ASN1_bytes((ASN1_STRING *)a,pp, |
70 | V_ASN1_UTCTIME,V_ASN1_UNIVERSAL)); | |
a53955d8 UM |
71 | #else |
72 | /* KLUDGE! We convert to ascii before writing DER */ | |
73 | int len; | |
74 | char tmp[24]; | |
75 | ASN1_STRING x = *(ASN1_STRING *)a; | |
76 | ||
77 | len = x.length; | |
78 | ebcdic2ascii(tmp, x.data, (len >= sizeof tmp) ? sizeof tmp : len); | |
79 | x.data = tmp; | |
80 | return i2d_ASN1_bytes(&x, pp, V_ASN1_UTCTIME,V_ASN1_UNIVERSAL); | |
81 | #endif | |
d02b48c6 RE |
82 | } |
83 | ||
84 | ||
6b691a5c UM |
85 | ASN1_UTCTIME *d2i_ASN1_UTCTIME(ASN1_UTCTIME **a, unsigned char **pp, |
86 | long length) | |
d02b48c6 RE |
87 | { |
88 | ASN1_UTCTIME *ret=NULL; | |
89 | ||
90 | ret=(ASN1_UTCTIME *)d2i_ASN1_bytes((ASN1_STRING **)a,pp,length, | |
91 | V_ASN1_UTCTIME,V_ASN1_UNIVERSAL); | |
92 | if (ret == NULL) | |
93 | { | |
dfeab068 | 94 | ASN1err(ASN1_F_D2I_ASN1_UTCTIME,ERR_R_NESTED_ASN1_ERROR); |
d02b48c6 RE |
95 | return(NULL); |
96 | } | |
a53955d8 UM |
97 | #ifdef CHARSET_EBCDIC |
98 | ascii2ebcdic(ret->data, ret->data, ret->length); | |
99 | #endif | |
d02b48c6 RE |
100 | if (!ASN1_UTCTIME_check(ret)) |
101 | { | |
102 | ASN1err(ASN1_F_D2I_ASN1_UTCTIME,ASN1_R_INVALID_TIME_FORMAT); | |
103 | goto err; | |
104 | } | |
105 | ||
106 | return(ret); | |
107 | err: | |
108 | if ((ret != NULL) && ((a == NULL) || (*a != ret))) | |
08e9c1af | 109 | M_ASN1_UTCTIME_free(ret); |
d02b48c6 RE |
110 | return(NULL); |
111 | } | |
9d6b1ce6 DSH |
112 | |
113 | #endif | |
d02b48c6 | 114 | |
1c455bc0 | 115 | int asn1_utctime_to_tm(struct tm *tm, const ASN1_UTCTIME *d) |
d02b48c6 | 116 | { |
ebc06fba AP |
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}; | |
d02b48c6 RE |
119 | char *a; |
120 | int n,i,l,o; | |
121 | ||
122 | if (d->type != V_ASN1_UTCTIME) return(0); | |
123 | l=d->length; | |
124 | a=(char *)d->data; | |
125 | o=0; | |
126 | ||
127 | if (l < 11) goto err; | |
128 | for (i=0; i<6; i++) | |
129 | { | |
130 | if ((i == 5) && ((a[o] == 'Z') || | |
131 | (a[o] == '+') || (a[o] == '-'))) | |
1c455bc0 DSH |
132 | { |
133 | i++; | |
134 | if (tm) | |
135 | tm->tm_sec = 0; | |
136 | break; | |
137 | } | |
d02b48c6 RE |
138 | if ((a[o] < '0') || (a[o] > '9')) goto err; |
139 | n= a[o]-'0'; | |
140 | if (++o > l) goto err; | |
141 | ||
142 | if ((a[o] < '0') || (a[o] > '9')) goto err; | |
143 | n=(n*10)+ a[o]-'0'; | |
144 | if (++o > l) goto err; | |
145 | ||
146 | if ((n < min[i]) || (n > max[i])) goto err; | |
1c455bc0 DSH |
147 | if (tm) |
148 | { | |
149 | switch(i) | |
150 | { | |
151 | case 0: | |
152 | tm->tm_year = n < 50 ? n + 100 : n; | |
153 | break; | |
154 | case 1: | |
155 | tm->tm_mon = n - 1; | |
156 | break; | |
157 | case 2: | |
158 | tm->tm_mday = n; | |
159 | break; | |
160 | case 3: | |
161 | tm->tm_hour = n; | |
162 | break; | |
163 | case 4: | |
164 | tm->tm_min = n; | |
165 | break; | |
166 | case 5: | |
167 | tm->tm_sec = n; | |
168 | break; | |
169 | } | |
170 | } | |
d02b48c6 RE |
171 | } |
172 | if (a[o] == 'Z') | |
173 | o++; | |
174 | else if ((a[o] == '+') || (a[o] == '-')) | |
175 | { | |
1c455bc0 | 176 | int offsign = a[o] == '-' ? -1 : 1, offset = 0; |
d02b48c6 RE |
177 | o++; |
178 | if (o+4 > l) goto err; | |
179 | for (i=6; i<8; i++) | |
180 | { | |
181 | if ((a[o] < '0') || (a[o] > '9')) goto err; | |
182 | n= a[o]-'0'; | |
183 | o++; | |
184 | if ((a[o] < '0') || (a[o] > '9')) goto err; | |
185 | n=(n*10)+ a[o]-'0'; | |
186 | if ((n < min[i]) || (n > max[i])) goto err; | |
1c455bc0 DSH |
187 | if (tm) |
188 | { | |
189 | if (i == 6) | |
190 | offset = n * 3600; | |
191 | else if (i == 7) | |
192 | offset += n * 60; | |
193 | } | |
d02b48c6 RE |
194 | o++; |
195 | } | |
1c455bc0 DSH |
196 | if (offset && !OPENSSL_gmtime_adj(tm, 0, offset * offsign)) |
197 | return 0; | |
d02b48c6 | 198 | } |
1c455bc0 | 199 | return o == l; |
d02b48c6 | 200 | err: |
1c455bc0 DSH |
201 | return 0; |
202 | } | |
203 | ||
204 | int ASN1_UTCTIME_check(const ASN1_UTCTIME *d) | |
205 | { | |
206 | return asn1_utctime_to_tm(NULL, d); | |
d02b48c6 RE |
207 | } |
208 | ||
875a644a | 209 | int ASN1_UTCTIME_set_string(ASN1_UTCTIME *s, const char *str) |
58964a49 RE |
210 | { |
211 | ASN1_UTCTIME t; | |
212 | ||
213 | t.type=V_ASN1_UTCTIME; | |
214 | t.length=strlen(str); | |
215 | t.data=(unsigned char *)str; | |
216 | if (ASN1_UTCTIME_check(&t)) | |
217 | { | |
218 | if (s != NULL) | |
219 | { | |
a0e7c8ee DSH |
220 | if (!ASN1_STRING_set((ASN1_STRING *)s, |
221 | (unsigned char *)str,t.length)) | |
222 | return 0; | |
ccb08f98 | 223 | s->type = V_ASN1_UTCTIME; |
58964a49 RE |
224 | } |
225 | return(1); | |
226 | } | |
227 | else | |
228 | return(0); | |
229 | } | |
230 | ||
6b691a5c | 231 | ASN1_UTCTIME *ASN1_UTCTIME_set(ASN1_UTCTIME *s, time_t t) |
d02b48c6 | 232 | { |
87d3a0cd DSH |
233 | return ASN1_UTCTIME_adj(s, t, 0, 0); |
234 | } | |
235 | ||
236 | ASN1_UTCTIME *ASN1_UTCTIME_adj(ASN1_UTCTIME *s, time_t t, | |
237 | int offset_day, long offset_sec) | |
238 | { | |
d02b48c6 RE |
239 | char *p; |
240 | struct tm *ts; | |
d02b48c6 | 241 | struct tm data; |
d420ac2c | 242 | size_t len = 20; |
d2aea038 | 243 | int free_s = 0; |
d02b48c6 RE |
244 | |
245 | if (s == NULL) | |
d2aea038 DSH |
246 | { |
247 | free_s = 1; | |
08e9c1af | 248 | s=M_ASN1_UTCTIME_new(); |
d2aea038 | 249 | } |
d02b48c6 | 250 | if (s == NULL) |
d2aea038 DSH |
251 | goto err; |
252 | ||
d02b48c6 | 253 | |
b8e35bd6 | 254 | ts=OPENSSL_gmtime(&t, &data); |
7d7d2cbc | 255 | if (ts == NULL) |
d2aea038 | 256 | goto err; |
7d7d2cbc | 257 | |
87d3a0cd DSH |
258 | if (offset_day || offset_sec) |
259 | { | |
260 | if (!OPENSSL_gmtime_adj(ts, offset_day, offset_sec)) | |
d2aea038 | 261 | goto err; |
87d3a0cd DSH |
262 | } |
263 | ||
264 | if((ts->tm_year < 50) || (ts->tm_year >= 150)) | |
d2aea038 | 265 | goto err; |
87d3a0cd | 266 | |
d02b48c6 | 267 | p=(char *)s->data; |
87203dc9 | 268 | if ((p == NULL) || ((size_t)s->length < len)) |
d02b48c6 | 269 | { |
d420ac2c | 270 | p=OPENSSL_malloc(len); |
a0e7c8ee DSH |
271 | if (p == NULL) |
272 | { | |
220bd849 | 273 | ASN1err(ASN1_F_ASN1_UTCTIME_ADJ,ERR_R_MALLOC_FAILURE); |
d2aea038 | 274 | goto err; |
a0e7c8ee | 275 | } |
d02b48c6 | 276 | if (s->data != NULL) |
26a3a48d | 277 | OPENSSL_free(s->data); |
d02b48c6 RE |
278 | s->data=(unsigned char *)p; |
279 | } | |
280 | ||
d420ac2c RL |
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); | |
d02b48c6 RE |
283 | s->length=strlen(p); |
284 | s->type=V_ASN1_UTCTIME; | |
a53955d8 UM |
285 | #ifdef CHARSET_EBCDIC_not |
286 | ebcdic2ascii(s->data, s->data, s->length); | |
287 | #endif | |
d02b48c6 | 288 | return(s); |
d2aea038 DSH |
289 | err: |
290 | if (free_s && s) | |
291 | M_ASN1_UTCTIME_free(s); | |
292 | return NULL; | |
d02b48c6 | 293 | } |
fd73a212 | 294 | |
61f175f4 BM |
295 | |
296 | int ASN1_UTCTIME_cmp_time_t(const ASN1_UTCTIME *s, time_t t) | |
297 | { | |
46a6cec6 DSH |
298 | struct tm stm, ttm; |
299 | int day, sec; | |
300 | ||
301 | if (!asn1_utctime_to_tm(&stm, s)) | |
302 | return -2; | |
303 | ||
304 | if (!OPENSSL_gmtime(&t, &ttm)) | |
305 | return -2; | |
306 | ||
307 | if (!OPENSSL_gmtime_diff(&day, &sec, &stm, &ttm)) | |
308 | return -2; | |
309 | ||
310 | if (day > 0) | |
311 | return 1; | |
312 | if (day < 0) | |
313 | return -1; | |
314 | if (sec > 0) | |
315 | return 1; | |
316 | if (sec < 0) | |
317 | return -1; | |
61f175f4 BM |
318 | return 0; |
319 | } | |
320 | ||
321 | ||
322 | #if 0 | |
fd73a212 | 323 | time_t ASN1_UTCTIME_get(const ASN1_UTCTIME *s) |
5569e1c3 BM |
324 | { |
325 | struct tm tm; | |
326 | int offset; | |
fd73a212 | 327 | |
5569e1c3 | 328 | memset(&tm,'\0',sizeof tm); |
fd73a212 BL |
329 | |
330 | #define g2(p) (((p)[0]-'0')*10+(p)[1]-'0') | |
5569e1c3 BM |
331 | tm.tm_year=g2(s->data); |
332 | if(tm.tm_year < 50) | |
333 | tm.tm_year+=100; | |
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') | |
340 | offset=0; | |
341 | else | |
342 | { | |
343 | offset=g2(s->data+13)*60+g2(s->data+15); | |
344 | if(s->data[12] == '-') | |
345 | offset= -offset; | |
346 | } | |
fd73a212 BL |
347 | #undef g2 |
348 | ||
dbd87ffc MC |
349 | /* |
350 | * FIXME: mktime assumes the current timezone | |
351 | * instead of UTC, and unless we rewrite OpenSSL | |
352 | * in Lisp we cannot locally change the timezone | |
353 | * without possibly interfering with other parts | |
354 | * of the program. timegm, which uses UTC, is | |
355 | * non-standard. | |
356 | * Also time_t is inappropriate for general | |
357 | * UTC times because it may a 32 bit type. | |
358 | */ | |
359 | return mktime(&tm)-offset*60; | |
5569e1c3 | 360 | } |
61f175f4 | 361 | #endif |