Branch data Line data Source code
1 : : /* crypto/asn1/a_time.c */
2 : : /* ====================================================================
3 : : * Copyright (c) 1999 The OpenSSL Project. All rights reserved.
4 : : *
5 : : * Redistribution and use in source and binary forms, with or without
6 : : * modification, are permitted provided that the following conditions
7 : : * are met:
8 : : *
9 : : * 1. Redistributions of source code must retain the above copyright
10 : : * notice, this list of conditions and the following disclaimer.
11 : : *
12 : : * 2. Redistributions in binary form must reproduce the above copyright
13 : : * notice, this list of conditions and the following disclaimer in
14 : : * the documentation and/or other materials provided with the
15 : : * distribution.
16 : : *
17 : : * 3. All advertising materials mentioning features or use of this
18 : : * software must display the following acknowledgment:
19 : : * "This product includes software developed by the OpenSSL Project
20 : : * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
21 : : *
22 : : * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
23 : : * endorse or promote products derived from this software without
24 : : * prior written permission. For written permission, please contact
25 : : * licensing@OpenSSL.org.
26 : : *
27 : : * 5. Products derived from this software may not be called "OpenSSL"
28 : : * nor may "OpenSSL" appear in their names without prior written
29 : : * permission of the OpenSSL Project.
30 : : *
31 : : * 6. Redistributions of any form whatsoever must retain the following
32 : : * acknowledgment:
33 : : * "This product includes software developed by the OpenSSL Project
34 : : * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
35 : : *
36 : : * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
37 : : * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
38 : : * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
39 : : * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
40 : : * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
41 : : * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
42 : : * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
43 : : * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
44 : : * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
45 : : * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
46 : : * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
47 : : * OF THE POSSIBILITY OF SUCH DAMAGE.
48 : : * ====================================================================
49 : : *
50 : : * This product includes cryptographic software written by Eric Young
51 : : * (eay@cryptsoft.com). This product includes software written by Tim
52 : : * Hudson (tjh@cryptsoft.com).
53 : : *
54 : : */
55 : :
56 : :
57 : : /* This is an implementation of the ASN1 Time structure which is:
58 : : * Time ::= CHOICE {
59 : : * utcTime UTCTime,
60 : : * generalTime GeneralizedTime }
61 : : * written by Steve Henson.
62 : : */
63 : :
64 : : #include <stdio.h>
65 : : #include <time.h>
66 : : #include "cryptlib.h"
67 : : #include <openssl/asn1t.h>
68 : : #include "asn1_locl.h"
69 : :
70 : : IMPLEMENT_ASN1_MSTRING(ASN1_TIME, B_ASN1_TIME)
71 : :
72 : 100 : IMPLEMENT_ASN1_FUNCTIONS(ASN1_TIME)
73 : :
74 : : #if 0
75 : : int i2d_ASN1_TIME(ASN1_TIME *a, unsigned char **pp)
76 : : {
77 : : #ifdef CHARSET_EBCDIC
78 : : /* KLUDGE! We convert to ascii before writing DER */
79 : : char tmp[24];
80 : : ASN1_STRING tmpstr;
81 : :
82 : : if(a->type == V_ASN1_UTCTIME || a->type == V_ASN1_GENERALIZEDTIME) {
83 : : int len;
84 : :
85 : : tmpstr = *(ASN1_STRING *)a;
86 : : len = tmpstr.length;
87 : : ebcdic2ascii(tmp, tmpstr.data, (len >= sizeof tmp) ? sizeof tmp : len);
88 : : tmpstr.data = tmp;
89 : : a = (ASN1_GENERALIZEDTIME *) &tmpstr;
90 : : }
91 : : #endif
92 : : if(a->type == V_ASN1_UTCTIME || a->type == V_ASN1_GENERALIZEDTIME)
93 : : return(i2d_ASN1_bytes((ASN1_STRING *)a,pp,
94 : : a->type ,V_ASN1_UNIVERSAL));
95 : : ASN1err(ASN1_F_I2D_ASN1_TIME,ASN1_R_EXPECTING_A_TIME);
96 : : return -1;
97 : : }
98 : : #endif
99 : :
100 : :
101 : 0 : ASN1_TIME *ASN1_TIME_set(ASN1_TIME *s, time_t t)
102 : : {
103 : 0 : return ASN1_TIME_adj(s, t, 0, 0);
104 : : }
105 : :
106 : 101 : ASN1_TIME *ASN1_TIME_adj(ASN1_TIME *s, time_t t,
107 : : int offset_day, long offset_sec)
108 : : {
109 : : struct tm *ts;
110 : : struct tm data;
111 : :
112 : 101 : ts=OPENSSL_gmtime(&t,&data);
113 [ - + ]: 101 : if (ts == NULL)
114 : : {
115 : 0 : ASN1err(ASN1_F_ASN1_TIME_ADJ, ASN1_R_ERROR_GETTING_TIME);
116 : 0 : return NULL;
117 : : }
118 [ + + ]: 101 : if (offset_day || offset_sec)
119 : : {
120 [ + - ]: 15 : if (!OPENSSL_gmtime_adj(ts, offset_day, offset_sec))
121 : : return NULL;
122 : : }
123 [ + - ]: 101 : if((ts->tm_year >= 50) && (ts->tm_year < 150))
124 : 101 : return ASN1_UTCTIME_adj(s, t, offset_day, offset_sec);
125 : 0 : return ASN1_GENERALIZEDTIME_adj(s, t, offset_day, offset_sec);
126 : : }
127 : :
128 : 1 : int ASN1_TIME_check(const ASN1_TIME *t)
129 : : {
130 [ - + ]: 1 : if (t->type == V_ASN1_GENERALIZEDTIME)
131 : 0 : return ASN1_GENERALIZEDTIME_check(t);
132 [ + - ]: 1 : else if (t->type == V_ASN1_UTCTIME)
133 : 1 : return ASN1_UTCTIME_check(t);
134 : : return 0;
135 : : }
136 : :
137 : : /* Convert an ASN1_TIME structure to GeneralizedTime */
138 : 0 : ASN1_GENERALIZEDTIME *ASN1_TIME_to_generalizedtime(ASN1_TIME *t, ASN1_GENERALIZEDTIME **out)
139 : : {
140 : : ASN1_GENERALIZEDTIME *ret;
141 : : char *str;
142 : : int newlen;
143 : :
144 [ # # ]: 0 : if (!ASN1_TIME_check(t)) return NULL;
145 : :
146 [ # # ][ # # ]: 0 : if (!out || !*out)
147 : : {
148 [ # # ]: 0 : if (!(ret = ASN1_GENERALIZEDTIME_new ()))
149 : : return NULL;
150 [ # # ]: 0 : if (out) *out = ret;
151 : : }
152 : : else ret = *out;
153 : :
154 : : /* If already GeneralizedTime just copy across */
155 [ # # ]: 0 : if (t->type == V_ASN1_GENERALIZEDTIME)
156 : : {
157 [ # # ]: 0 : if(!ASN1_STRING_set(ret, t->data, t->length))
158 : : return NULL;
159 : 0 : return ret;
160 : : }
161 : :
162 : : /* grow the string */
163 [ # # ]: 0 : if (!ASN1_STRING_set(ret, NULL, t->length + 2))
164 : : return NULL;
165 : : /* ASN1_STRING_set() allocated 'len + 1' bytes. */
166 : 0 : newlen = t->length + 2 + 1;
167 : 0 : str = (char *)ret->data;
168 : : /* Work out the century and prepend */
169 [ # # ]: 0 : if (t->data[0] >= '5') BUF_strlcpy(str, "19", newlen);
170 : 0 : else BUF_strlcpy(str, "20", newlen);
171 : :
172 : 0 : BUF_strlcat(str, (char *)t->data, newlen);
173 : :
174 : 0 : return ret;
175 : : }
176 : :
177 : 1 : int ASN1_TIME_set_string(ASN1_TIME *s, const char *str)
178 : : {
179 : : ASN1_TIME t;
180 : :
181 : 1 : t.length = strlen(str);
182 : 1 : t.data = (unsigned char *)str;
183 : 1 : t.flags = 0;
184 : :
185 : 1 : t.type = V_ASN1_UTCTIME;
186 : :
187 [ - + ]: 1 : if (!ASN1_TIME_check(&t))
188 : : {
189 : 0 : t.type = V_ASN1_GENERALIZEDTIME;
190 [ # # ]: 0 : if (!ASN1_TIME_check(&t))
191 : : return 0;
192 : : }
193 : :
194 [ - + ][ # # ]: 1 : if (s && !ASN1_STRING_copy((ASN1_STRING *)s, (ASN1_STRING *)&t))
195 : : return 0;
196 : :
197 : : return 1;
198 : : }
199 : :
200 : 0 : static int asn1_time_to_tm(struct tm *tm, const ASN1_TIME *t)
201 : : {
202 [ # # ]: 0 : if (t == NULL)
203 : : {
204 : : time_t now_t;
205 : 0 : time(&now_t);
206 [ # # ]: 0 : if (OPENSSL_gmtime(&now_t, tm))
207 : : return 1;
208 : 0 : return 0;
209 : : }
210 : :
211 [ # # ]: 0 : if (t->type == V_ASN1_UTCTIME)
212 : 0 : return asn1_utctime_to_tm(tm, t);
213 [ # # ]: 0 : else if (t->type == V_ASN1_GENERALIZEDTIME)
214 : 0 : return asn1_generalizedtime_to_tm(tm, t);
215 : :
216 : : return 0;
217 : : }
218 : :
219 : 0 : int ASN1_TIME_diff(int *pday, int *psec,
220 : : const ASN1_TIME *from, const ASN1_TIME *to)
221 : : {
222 : : struct tm tm_from, tm_to;
223 [ # # ]: 0 : if (!asn1_time_to_tm(&tm_from, from))
224 : : return 0;
225 [ # # ]: 0 : if (!asn1_time_to_tm(&tm_to, to))
226 : : return 0;
227 : 0 : return OPENSSL_gmtime_diff(pday, psec, &tm_from, &tm_to);
228 : : }
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