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.
7 *
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).
14 *
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.
21 *
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 :-).
36 * 4. If you include any Windows specific code (or a derivative thereof) from
37 * the apps directory (application code) you must include an acknowledgement:
38 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
39 *
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.
51 *
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 #include <openssl/asn1.h>
58
59 #include <string.h>
60 #include <time.h>
61
62 #include <openssl/err.h>
63 #include <openssl/mem.h>
64 #include <openssl/time_support.h>
65
66
67 #if 0
68 int i2d_ASN1_UTCTIME(ASN1_UTCTIME *a, unsigned char **pp)
69 {
70 return(i2d_ASN1_bytes((ASN1_STRING *)a,pp,
71 V_ASN1_UTCTIME,V_ASN1_UNIVERSAL));
72 }
73
74
75 ASN1_UTCTIME *d2i_ASN1_UTCTIME(ASN1_UTCTIME **a, unsigned char **pp,
76 long length)
77 {
78 ASN1_UTCTIME *ret=NULL;
79
80 ret=(ASN1_UTCTIME *)d2i_ASN1_bytes((ASN1_STRING **)a,pp,length,
81 V_ASN1_UTCTIME,V_ASN1_UNIVERSAL);
82 if (ret == NULL)
83 {
84 OPENSSL_PUT_ERROR(ASN1, ERR_R_NESTED_ASN1_ERROR);
85 return(NULL);
86 }
87 if (!ASN1_UTCTIME_check(ret))
88 {
89 OPENSSL_PUT_ERROR(ASN1, ASN1_R_INVALID_TIME_FORMAT);
90 goto err;
91 }
92
93 return(ret);
94 err:
95 if ((ret != NULL) && ((a == NULL) || (*a != ret)))
96 M_ASN1_UTCTIME_free(ret);
97 return(NULL);
98 }
99
100 #endif
101
asn1_utctime_to_tm(struct tm * tm,const ASN1_UTCTIME * d)102 int asn1_utctime_to_tm(struct tm *tm, const ASN1_UTCTIME *d)
103 {
104 static const int min[8]={ 0, 1, 1, 0, 0, 0, 0, 0};
105 static const int max[8]={99,12,31,23,59,59,12,59};
106 char *a;
107 int n,i,l,o;
108
109 if (d->type != V_ASN1_UTCTIME) return(0);
110 l=d->length;
111 a=(char *)d->data;
112 o=0;
113
114 if (l < 11) goto err;
115 for (i=0; i<6; i++)
116 {
117 if ((i == 5) && ((a[o] == 'Z') ||
118 (a[o] == '+') || (a[o] == '-')))
119 {
120 i++;
121 if (tm)
122 tm->tm_sec = 0;
123 break;
124 }
125 if ((a[o] < '0') || (a[o] > '9')) goto err;
126 n= a[o]-'0';
127 if (++o > l) goto err;
128
129 if ((a[o] < '0') || (a[o] > '9')) goto err;
130 n=(n*10)+ a[o]-'0';
131 if (++o > l) goto err;
132
133 if ((n < min[i]) || (n > max[i])) goto err;
134 if (tm)
135 {
136 switch(i)
137 {
138 case 0:
139 tm->tm_year = n < 50 ? n + 100 : n;
140 break;
141 case 1:
142 tm->tm_mon = n - 1;
143 break;
144 case 2:
145 tm->tm_mday = n;
146 break;
147 case 3:
148 tm->tm_hour = n;
149 break;
150 case 4:
151 tm->tm_min = n;
152 break;
153 case 5:
154 tm->tm_sec = n;
155 break;
156 }
157 }
158 }
159 if (a[o] == 'Z')
160 o++;
161 else if ((a[o] == '+') || (a[o] == '-'))
162 {
163 int offsign = a[o] == '-' ? -1 : 1, offset = 0;
164 o++;
165 if (o+4 > l) goto err;
166 for (i=6; i<8; i++)
167 {
168 if ((a[o] < '0') || (a[o] > '9')) goto err;
169 n= a[o]-'0';
170 o++;
171 if ((a[o] < '0') || (a[o] > '9')) goto err;
172 n=(n*10)+ a[o]-'0';
173 if ((n < min[i]) || (n > max[i])) goto err;
174 if (tm)
175 {
176 if (i == 6)
177 offset = n * 3600;
178 else if (i == 7)
179 offset += n * 60;
180 }
181 o++;
182 }
183 if (offset && !OPENSSL_gmtime_adj(tm, 0, offset * offsign))
184 return 0;
185 }
186 return o == l;
187 err:
188 return 0;
189 }
190
ASN1_UTCTIME_check(const ASN1_UTCTIME * d)191 int ASN1_UTCTIME_check(const ASN1_UTCTIME *d)
192 {
193 return asn1_utctime_to_tm(NULL, d);
194 }
195
ASN1_UTCTIME_set_string(ASN1_UTCTIME * s,const char * str)196 int ASN1_UTCTIME_set_string(ASN1_UTCTIME *s, const char *str)
197 {
198 ASN1_UTCTIME t;
199
200 t.type=V_ASN1_UTCTIME;
201 t.length=strlen(str);
202 t.data=(unsigned char *)str;
203 if (ASN1_UTCTIME_check(&t))
204 {
205 if (s != NULL)
206 {
207 if (!ASN1_STRING_set((ASN1_STRING *)s,
208 (unsigned char *)str,t.length))
209 return 0;
210 s->type = V_ASN1_UTCTIME;
211 }
212 return(1);
213 }
214 else
215 return(0);
216 }
217
ASN1_UTCTIME_set(ASN1_UTCTIME * s,time_t t)218 ASN1_UTCTIME *ASN1_UTCTIME_set(ASN1_UTCTIME *s, time_t t)
219 {
220 return ASN1_UTCTIME_adj(s, t, 0, 0);
221 }
222
ASN1_UTCTIME_adj(ASN1_UTCTIME * s,time_t t,int offset_day,long offset_sec)223 ASN1_UTCTIME *ASN1_UTCTIME_adj(ASN1_UTCTIME *s, time_t t,
224 int offset_day, long offset_sec)
225 {
226 char *p;
227 struct tm *ts;
228 struct tm data;
229 size_t len = 20;
230 int free_s = 0;
231
232 if (s == NULL)
233 {
234 free_s = 1;
235 s=M_ASN1_UTCTIME_new();
236 }
237 if (s == NULL)
238 goto err;
239
240
241 ts=OPENSSL_gmtime(&t, &data);
242 if (ts == NULL)
243 goto err;
244
245 if (offset_day || offset_sec)
246 {
247 if (!OPENSSL_gmtime_adj(ts, offset_day, offset_sec))
248 goto err;
249 }
250
251 if((ts->tm_year < 50) || (ts->tm_year >= 150))
252 goto err;
253
254 p=(char *)s->data;
255 if ((p == NULL) || ((size_t)s->length < len))
256 {
257 p=OPENSSL_malloc(len);
258 if (p == NULL)
259 {
260 OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
261 goto err;
262 }
263 if (s->data != NULL)
264 OPENSSL_free(s->data);
265 s->data=(unsigned char *)p;
266 }
267
268 BIO_snprintf(p,len,"%02d%02d%02d%02d%02d%02dZ",ts->tm_year%100,
269 ts->tm_mon+1,ts->tm_mday,ts->tm_hour,ts->tm_min,ts->tm_sec);
270 s->length=strlen(p);
271 s->type=V_ASN1_UTCTIME;
272 return(s);
273 err:
274 if (free_s && s)
275 M_ASN1_UTCTIME_free(s);
276 return NULL;
277 }
278
279
ASN1_UTCTIME_cmp_time_t(const ASN1_UTCTIME * s,time_t t)280 int ASN1_UTCTIME_cmp_time_t(const ASN1_UTCTIME *s, time_t t)
281 {
282 struct tm stm, ttm;
283 int day, sec;
284
285 if (!asn1_utctime_to_tm(&stm, s))
286 return -2;
287
288 if (!OPENSSL_gmtime(&t, &ttm))
289 return -2;
290
291 if (!OPENSSL_gmtime_diff(&day, &sec, &ttm, &stm))
292 return -2;
293
294 if (day > 0)
295 return 1;
296 if (day < 0)
297 return -1;
298 if (sec > 0)
299 return 1;
300 if (sec < 0)
301 return -1;
302 return 0;
303 }
304
305
306 #if 0
307 time_t ASN1_UTCTIME_get(const ASN1_UTCTIME *s)
308 {
309 struct tm tm;
310 int offset;
311
312 memset(&tm,'\0',sizeof tm);
313
314 #define g2(p) (((p)[0]-'0')*10+(p)[1]-'0')
315 tm.tm_year=g2(s->data);
316 if(tm.tm_year < 50)
317 tm.tm_year+=100;
318 tm.tm_mon=g2(s->data+2)-1;
319 tm.tm_mday=g2(s->data+4);
320 tm.tm_hour=g2(s->data+6);
321 tm.tm_min=g2(s->data+8);
322 tm.tm_sec=g2(s->data+10);
323 if(s->data[12] == 'Z')
324 offset=0;
325 else
326 {
327 offset=g2(s->data+13)*60+g2(s->data+15);
328 if(s->data[12] == '-')
329 offset= -offset;
330 }
331 #undef g2
332
333 return mktime(&tm)-offset*60; /* FIXME: mktime assumes the current timezone
334 * instead of UTC, and unless we rewrite OpenSSL
335 * in Lisp we cannot locally change the timezone
336 * without possibly interfering with other parts
337 * of the program. timegm, which uses UTC, is
338 * non-standard.
339 * Also time_t is inappropriate for general
340 * UTC times because it may a 32 bit type. */
341 }
342 #endif
343