Branch data 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 : : /* GENERALIZEDTIME implementation, written by Steve Henson. Based on UTCTIME */
60 : :
61 : : #include <stdio.h>
62 : : #include <time.h>
63 : : #include "cryptlib.h"
64 : : #include <openssl/asn1.h>
65 : : #include "asn1_locl.h"
66 : :
67 : : #if 0
68 : :
69 : : int i2d_ASN1_GENERALIZEDTIME(ASN1_GENERALIZEDTIME *a, unsigned char **pp)
70 : : {
71 : : #ifdef CHARSET_EBCDIC
72 : : /* KLUDGE! We convert to ascii before writing DER */
73 : : int len;
74 : : char tmp[24];
75 : : ASN1_STRING tmpstr = *(ASN1_STRING *)a;
76 : :
77 : : len = tmpstr.length;
78 : : ebcdic2ascii(tmp, tmpstr.data, (len >= sizeof tmp) ? sizeof tmp : len);
79 : : tmpstr.data = tmp;
80 : :
81 : : a = (ASN1_GENERALIZEDTIME *) &tmpstr;
82 : : #endif
83 : : return(i2d_ASN1_bytes((ASN1_STRING *)a,pp,
84 : : V_ASN1_GENERALIZEDTIME,V_ASN1_UNIVERSAL));
85 : : }
86 : :
87 : :
88 : : ASN1_GENERALIZEDTIME *d2i_ASN1_GENERALIZEDTIME(ASN1_GENERALIZEDTIME **a,
89 : : unsigned char **pp, long length)
90 : : {
91 : : ASN1_GENERALIZEDTIME *ret=NULL;
92 : :
93 : : ret=(ASN1_GENERALIZEDTIME *)d2i_ASN1_bytes((ASN1_STRING **)a,pp,length,
94 : : V_ASN1_GENERALIZEDTIME,V_ASN1_UNIVERSAL);
95 : : if (ret == NULL)
96 : : {
97 : : ASN1err(ASN1_F_D2I_ASN1_GENERALIZEDTIME,ERR_R_NESTED_ASN1_ERROR);
98 : : return(NULL);
99 : : }
100 : : #ifdef CHARSET_EBCDIC
101 : : ascii2ebcdic(ret->data, ret->data, ret->length);
102 : : #endif
103 : : if (!ASN1_GENERALIZEDTIME_check(ret))
104 : : {
105 : : ASN1err(ASN1_F_D2I_ASN1_GENERALIZEDTIME,ASN1_R_INVALID_TIME_FORMAT);
106 : : goto err;
107 : : }
108 : :
109 : : return(ret);
110 : : err:
111 : : if ((ret != NULL) && ((a == NULL) || (*a != ret)))
112 : : M_ASN1_GENERALIZEDTIME_free(ret);
113 : : return(NULL);
114 : : }
115 : :
116 : : #endif
117 : :
118 : 3 : int asn1_generalizedtime_to_tm(struct tm *tm, const ASN1_GENERALIZEDTIME *d)
119 : : {
120 : : static const int min[9]={ 0, 0, 1, 1, 0, 0, 0, 0, 0};
121 : : static const int max[9]={99, 99,12,31,23,59,59,12,59};
122 : : char *a;
123 : : int n,i,l,o;
124 : :
125 [ + - ]: 3 : if (d->type != V_ASN1_GENERALIZEDTIME) return(0);
126 : 3 : l=d->length;
127 : 3 : a=(char *)d->data;
128 : 3 : o=0;
129 : : /* GENERALIZEDTIME is similar to UTCTIME except the year is
130 : : * represented as YYYY. This stuff treats everything as a two digit
131 : : * field so make first two fields 00 to 99
132 : : */
133 [ + - ]: 3 : if (l < 13) goto err;
134 [ + + ]: 24 : for (i=0; i<7; i++)
135 : : {
136 [ + + ][ + - ]: 21 : if ((i == 6) && ((a[o] == 'Z') ||
137 [ - + ]: 3 : (a[o] == '+') || (a[o] == '-')))
138 : : {
139 : 0 : i++;
140 [ # # ]: 0 : if (tm)
141 : 0 : tm->tm_sec = 0;
142 : : break;
143 : : }
144 [ + - ]: 21 : if ((a[o] < '0') || (a[o] > '9')) goto err;
145 : 21 : n= a[o]-'0';
146 [ + - ]: 21 : if (++o > l) goto err;
147 : :
148 [ + - ]: 21 : if ((a[o] < '0') || (a[o] > '9')) goto err;
149 : 21 : n=(n*10)+ a[o]-'0';
150 [ + - ]: 21 : if (++o > l) goto err;
151 : :
152 [ + - ][ + - ]: 21 : if ((n < min[i]) || (n > max[i])) goto err;
153 [ - + ]: 21 : if (tm)
154 : : {
155 [ # # # # : 0 : switch(i)
# # # # ]
156 : : {
157 : : case 0:
158 : 0 : tm->tm_year = n * 100 - 1900;
159 : 0 : break;
160 : : case 1:
161 : 0 : tm->tm_year += n;
162 : 0 : break;
163 : : case 2:
164 : 0 : tm->tm_mon = n - 1;
165 : 0 : break;
166 : : case 3:
167 : 0 : tm->tm_mday = n;
168 : 0 : break;
169 : : case 4:
170 : 0 : tm->tm_hour = n;
171 : 0 : break;
172 : : case 5:
173 : 0 : tm->tm_min = n;
174 : 0 : break;
175 : : case 6:
176 : 0 : tm->tm_sec = n;
177 : 0 : break;
178 : : }
179 : : }
180 : : }
181 : : /* Optional fractional seconds: decimal point followed by one
182 : : * or more digits.
183 : : */
184 [ - + ]: 3 : if (a[o] == '.')
185 : : {
186 [ # # ]: 0 : if (++o > l) goto err;
187 : : i = o;
188 [ # # ][ # # ]: 0 : while ((a[o] >= '0') && (a[o] <= '9') && (o <= l))
189 : 0 : o++;
190 : : /* Must have at least one digit after decimal point */
191 [ # # ]: 0 : if (i == o) goto err;
192 : : }
193 : :
194 [ + - ]: 3 : if (a[o] == 'Z')
195 : 3 : o++;
196 [ # # ]: 0 : else if ((a[o] == '+') || (a[o] == '-'))
197 : : {
198 [ # # ]: 0 : int offsign = a[o] == '-' ? -1 : 1, offset = 0;
199 : 0 : o++;
200 [ # # ]: 0 : if (o+4 > l) goto err;
201 [ # # ]: 0 : for (i=7; i<9; i++)
202 : : {
203 [ # # ]: 0 : if ((a[o] < '0') || (a[o] > '9')) goto err;
204 : 0 : n= a[o]-'0';
205 : 0 : o++;
206 [ # # ]: 0 : if ((a[o] < '0') || (a[o] > '9')) goto err;
207 : 0 : n=(n*10)+ a[o]-'0';
208 [ # # ][ # # ]: 0 : if ((n < min[i]) || (n > max[i])) goto err;
209 [ # # ]: 0 : if (tm)
210 : : {
211 [ # # ]: 0 : if (i == 7)
212 : 0 : offset = n * 3600;
213 [ # # ]: 0 : else if (i == 8)
214 : 0 : offset += n * 60;
215 : : }
216 : 0 : o++;
217 : : }
218 [ # # ][ # # ]: 0 : if (offset && !OPENSSL_gmtime_adj(tm, 0, offset * offsign))
219 : : return 0;
220 : : }
221 [ # # ]: 0 : else if (a[o])
222 : : {
223 : : /* Missing time zone information. */
224 : : goto err;
225 : : }
226 : 3 : return(o == l);
227 : : err:
228 : : return(0);
229 : : }
230 : :
231 : 3 : int ASN1_GENERALIZEDTIME_check(const ASN1_GENERALIZEDTIME *d)
232 : : {
233 : 3 : return asn1_generalizedtime_to_tm(NULL, d);
234 : : }
235 : :
236 : 3 : int ASN1_GENERALIZEDTIME_set_string(ASN1_GENERALIZEDTIME *s, const char *str)
237 : : {
238 : : ASN1_GENERALIZEDTIME t;
239 : :
240 : 3 : t.type=V_ASN1_GENERALIZEDTIME;
241 : 3 : t.length=strlen(str);
242 : 3 : t.data=(unsigned char *)str;
243 [ + - ]: 3 : if (ASN1_GENERALIZEDTIME_check(&t))
244 : : {
245 [ + - ]: 3 : if (s != NULL)
246 : : {
247 [ + - ]: 3 : if (!ASN1_STRING_set((ASN1_STRING *)s,
248 : : (unsigned char *)str,t.length))
249 : : return 0;
250 : 3 : s->type=V_ASN1_GENERALIZEDTIME;
251 : : }
252 : : return(1);
253 : : }
254 : : else
255 : : return(0);
256 : : }
257 : :
258 : 0 : ASN1_GENERALIZEDTIME *ASN1_GENERALIZEDTIME_set(ASN1_GENERALIZEDTIME *s,
259 : : time_t t)
260 : : {
261 : 0 : return ASN1_GENERALIZEDTIME_adj(s, t, 0, 0);
262 : : }
263 : :
264 : 0 : ASN1_GENERALIZEDTIME *ASN1_GENERALIZEDTIME_adj(ASN1_GENERALIZEDTIME *s,
265 : : time_t t, int offset_day, long offset_sec)
266 : : {
267 : : char *p;
268 : : struct tm *ts;
269 : : struct tm data;
270 : 0 : size_t len = 20;
271 : :
272 [ # # ]: 0 : if (s == NULL)
273 : 0 : s=M_ASN1_GENERALIZEDTIME_new();
274 [ # # ]: 0 : if (s == NULL)
275 : : return(NULL);
276 : :
277 : 0 : ts=OPENSSL_gmtime(&t, &data);
278 [ # # ]: 0 : if (ts == NULL)
279 : : return(NULL);
280 : :
281 [ # # ]: 0 : if (offset_day || offset_sec)
282 : : {
283 [ # # ]: 0 : if (!OPENSSL_gmtime_adj(ts, offset_day, offset_sec))
284 : : return NULL;
285 : : }
286 : :
287 : 0 : p=(char *)s->data;
288 [ # # ][ # # ]: 0 : if ((p == NULL) || ((size_t)s->length < len))
289 : : {
290 : 0 : p=OPENSSL_malloc(len);
291 [ # # ]: 0 : if (p == NULL)
292 : : {
293 : 0 : ASN1err(ASN1_F_ASN1_GENERALIZEDTIME_ADJ,
294 : : ERR_R_MALLOC_FAILURE);
295 : 0 : return(NULL);
296 : : }
297 [ # # ]: 0 : if (s->data != NULL)
298 : 0 : OPENSSL_free(s->data);
299 : 0 : s->data=(unsigned char *)p;
300 : : }
301 : :
302 : 0 : BIO_snprintf(p,len,"%04d%02d%02d%02d%02d%02dZ",ts->tm_year + 1900,
303 : 0 : ts->tm_mon+1,ts->tm_mday,ts->tm_hour,ts->tm_min,ts->tm_sec);
304 : 0 : s->length=strlen(p);
305 : 0 : s->type=V_ASN1_GENERALIZEDTIME;
306 : : #ifdef CHARSET_EBCDIC_not
307 : : ebcdic2ascii(s->data, s->data, s->length);
308 : : #endif
309 : 0 : return(s);
310 : : }
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