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 "o_time.h"
65 #include <openssl/asn1.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 int ASN1_GENERALIZEDTIME_check(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 if (d->type != V_ASN1_GENERALIZEDTIME) return(0);
126 l=d->length;
127 a=(char *)d->data;
128 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 if (l < 13) goto err;
134 for (i=0; i<7; i++)
135 {
136 if ((i == 6) && ((a[o] == 'Z') ||
137 (a[o] == '+') || (a[o] == '-')))
138 { i++; break; }
139 if ((a[o] < '0') || (a[o] > '9')) goto err;
140 n= a[o]-'0';
141 if (++o > l) goto err;
142
143 if ((a[o] < '0') || (a[o] > '9')) goto err;
144 n=(n*10)+ a[o]-'0';
145 if (++o > l) goto err;
146
147 if ((n < min[i]) || (n > max[i])) goto err;
148 }
149 /* Optional fractional seconds: decimal point followed by one
150 * or more digits.
151 */
152 if (a[o] == '.')
153 {
154 if (++o > l) goto err;
155 i = o;
156 while ((a[o] >= '0') && (a[o] <= '9') && (o <= l))
157 o++;
158 /* Must have at least one digit after decimal point */
159 if (i == o) goto err;
160 }
161
162 if (a[o] == 'Z')
163 o++;
164 else if ((a[o] == '+') || (a[o] == '-'))
165 {
166 o++;
167 if (o+4 > l) goto err;
168 for (i=7; i<9; i++)
169 {
170 if ((a[o] < '0') || (a[o] > '9')) goto err;
171 n= a[o]-'0';
172 o++;
173 if ((a[o] < '0') || (a[o] > '9')) goto err;
174 n=(n*10)+ a[o]-'0';
175 if ((n < min[i]) || (n > max[i])) goto err;
176 o++;
177 }
178 }
179 else
180 {
181 /* Missing time zone information. */
182 goto err;
183 }
184 return(o == l);
185 err:
186 return(0);
187 }
188
189 int ASN1_GENERALIZEDTIME_set_string(ASN1_GENERALIZEDTIME *s, const char *str)
190 {
191 ASN1_GENERALIZEDTIME t;
192
193 t.type=V_ASN1_GENERALIZEDTIME;
194 t.length=strlen(str);
195 t.data=(unsigned char *)str;
196 if (ASN1_GENERALIZEDTIME_check(&t))
197 {
198 if (s != NULL)
199 {
200 if (!ASN1_STRING_set((ASN1_STRING *)s,
201 (unsigned char *)str,t.length))
202 return 0;
203 s->type=V_ASN1_GENERALIZEDTIME;
204 }
205 return(1);
206 }
207 else
208 return(0);
209 }
210
211 ASN1_GENERALIZEDTIME *ASN1_GENERALIZEDTIME_set(ASN1_GENERALIZEDTIME *s,
212 time_t t)
213 {
214 return ASN1_GENERALIZEDTIME_adj(s, t, 0, 0);
215 }
216
217 ASN1_GENERALIZEDTIME *ASN1_GENERALIZEDTIME_adj(ASN1_GENERALIZEDTIME *s,
218 time_t t, int offset_day, long offset_sec)
219 {
220 char *p;
221 struct tm *ts;
222 struct tm data;
223 size_t len = 20;
224
225 if (s == NULL)
226 s=M_ASN1_GENERALIZEDTIME_new();
227 if (s == NULL)
228 return(NULL);
229
230 ts=OPENSSL_gmtime(&t, &data);
231 if (ts == NULL)
232 return(NULL);
233
234 if (offset_day || offset_sec)
235 {
236 if (!OPENSSL_gmtime_adj(ts, offset_day, offset_sec))
237 return NULL;
238 }
239
240 p=(char *)s->data;
241 if ((p == NULL) || ((size_t)s->length < len))
242 {
243 p=OPENSSL_malloc(len);
244 if (p == NULL)
245 {
246 ASN1err(ASN1_F_ASN1_GENERALIZEDTIME_ADJ,
247 ERR_R_MALLOC_FAILURE);
248 return(NULL);
249 }
250 if (s->data != NULL)
251 OPENSSL_free(s->data);
252 s->data=(unsigned char *)p;
253 }
254
255 BIO_snprintf(p,len,"%04d%02d%02d%02d%02d%02dZ",ts->tm_year + 1900,
256 ts->tm_mon+1,ts->tm_mday,ts->tm_hour,ts->tm_min,ts->tm_sec);
257 s->length=strlen(p);
258 s->type=V_ASN1_GENERALIZEDTIME;
259 #ifdef CHARSET_EBCDIC_not
260 ebcdic2ascii(s->data, s->data, s->length);
261 #endif
262 return(s);
263 }