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f6aed2cd DSH |
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 | |
0f113f3e | 10 | * notice, this list of conditions and the following disclaimer. |
f6aed2cd DSH |
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 | ||
1d97c843 TH |
56 | /*- |
57 | * This is an implementation of the ASN1 Time structure which is: | |
f6aed2cd DSH |
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" | |
9d6b1ce6 | 67 | #include <openssl/asn1t.h> |
1c455bc0 | 68 | #include "asn1_locl.h" |
f6aed2cd | 69 | |
9d6b1ce6 | 70 | IMPLEMENT_ASN1_MSTRING(ASN1_TIME, B_ASN1_TIME) |
08e9c1af | 71 | |
9d6b1ce6 | 72 | IMPLEMENT_ASN1_FUNCTIONS(ASN1_TIME) |
08e9c1af | 73 | |
9d6b1ce6 | 74 | #if 0 |
6b691a5c | 75 | int i2d_ASN1_TIME(ASN1_TIME *a, unsigned char **pp) |
0f113f3e MC |
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, | |
88 | (len >= sizeof tmp) ? sizeof tmp : len); | |
89 | tmpstr.data = tmp; | |
90 | a = (ASN1_GENERALIZEDTIME *)&tmpstr; | |
91 | } | |
92 | # endif | |
93 | if (a->type == V_ASN1_UTCTIME || a->type == V_ASN1_GENERALIZEDTIME) | |
94 | return (i2d_ASN1_bytes((ASN1_STRING *)a, pp, | |
95 | a->type, V_ASN1_UNIVERSAL)); | |
96 | ASN1err(ASN1_F_I2D_ASN1_TIME, ASN1_R_EXPECTING_A_TIME); | |
97 | return -1; | |
98 | } | |
9d6b1ce6 | 99 | #endif |
f6aed2cd | 100 | |
6b691a5c | 101 | ASN1_TIME *ASN1_TIME_set(ASN1_TIME *s, time_t t) |
0f113f3e MC |
102 | { |
103 | return ASN1_TIME_adj(s, t, 0, 0); | |
104 | } | |
87d3a0cd DSH |
105 | |
106 | ASN1_TIME *ASN1_TIME_adj(ASN1_TIME *s, time_t t, | |
0f113f3e MC |
107 | int offset_day, long offset_sec) |
108 | { | |
109 | struct tm *ts; | |
110 | struct tm data; | |
111 | ||
112 | ts = OPENSSL_gmtime(&t, &data); | |
113 | if (ts == NULL) { | |
114 | ASN1err(ASN1_F_ASN1_TIME_ADJ, ASN1_R_ERROR_GETTING_TIME); | |
115 | return NULL; | |
116 | } | |
117 | if (offset_day || offset_sec) { | |
118 | if (!OPENSSL_gmtime_adj(ts, offset_day, offset_sec)) | |
119 | return NULL; | |
120 | } | |
121 | if ((ts->tm_year >= 50) && (ts->tm_year < 150)) | |
122 | return ASN1_UTCTIME_adj(s, t, offset_day, offset_sec); | |
123 | return ASN1_GENERALIZEDTIME_adj(s, t, offset_day, offset_sec); | |
124 | } | |
02e4fbed | 125 | |
359b0c9f | 126 | int ASN1_TIME_check(const ASN1_TIME *t) |
0f113f3e MC |
127 | { |
128 | if (t->type == V_ASN1_GENERALIZEDTIME) | |
129 | return ASN1_GENERALIZEDTIME_check(t); | |
130 | else if (t->type == V_ASN1_UTCTIME) | |
131 | return ASN1_UTCTIME_check(t); | |
132 | return 0; | |
133 | } | |
02e4fbed DSH |
134 | |
135 | /* Convert an ASN1_TIME structure to GeneralizedTime */ | |
0f113f3e MC |
136 | ASN1_GENERALIZEDTIME *ASN1_TIME_to_generalizedtime(ASN1_TIME *t, |
137 | ASN1_GENERALIZEDTIME **out) | |
138 | { | |
139 | ASN1_GENERALIZEDTIME *ret; | |
140 | char *str; | |
141 | int newlen; | |
142 | ||
143 | if (!ASN1_TIME_check(t)) | |
144 | return NULL; | |
145 | ||
146 | if (!out || !*out) { | |
147 | if (!(ret = ASN1_GENERALIZEDTIME_new())) | |
148 | return NULL; | |
149 | if (out) | |
150 | *out = ret; | |
151 | } else | |
152 | ret = *out; | |
153 | ||
154 | /* If already GeneralizedTime just copy across */ | |
155 | if (t->type == V_ASN1_GENERALIZEDTIME) { | |
156 | if (!ASN1_STRING_set(ret, t->data, t->length)) | |
157 | return NULL; | |
158 | return ret; | |
159 | } | |
160 | ||
161 | /* grow the string */ | |
162 | if (!ASN1_STRING_set(ret, NULL, t->length + 2)) | |
163 | return NULL; | |
164 | /* ASN1_STRING_set() allocated 'len + 1' bytes. */ | |
165 | newlen = t->length + 2 + 1; | |
166 | str = (char *)ret->data; | |
167 | /* Work out the century and prepend */ | |
168 | if (t->data[0] >= '5') | |
169 | BUF_strlcpy(str, "19", newlen); | |
170 | else | |
171 | BUF_strlcpy(str, "20", newlen); | |
172 | ||
173 | BUF_strlcat(str, (char *)t->data, newlen); | |
174 | ||
175 | return ret; | |
176 | } | |
33ab2e31 DSH |
177 | |
178 | int ASN1_TIME_set_string(ASN1_TIME *s, const char *str) | |
0f113f3e MC |
179 | { |
180 | ASN1_TIME t; | |
181 | ||
182 | t.length = strlen(str); | |
183 | t.data = (unsigned char *)str; | |
184 | t.flags = 0; | |
185 | ||
186 | t.type = V_ASN1_UTCTIME; | |
187 | ||
188 | if (!ASN1_TIME_check(&t)) { | |
189 | t.type = V_ASN1_GENERALIZEDTIME; | |
190 | if (!ASN1_TIME_check(&t)) | |
191 | return 0; | |
192 | } | |
193 | ||
194 | if (s && !ASN1_STRING_copy((ASN1_STRING *)s, (ASN1_STRING *)&t)) | |
195 | return 0; | |
196 | ||
197 | return 1; | |
198 | } | |
359b0c9f | 199 | |
1c455bc0 | 200 | static int asn1_time_to_tm(struct tm *tm, const ASN1_TIME *t) |
0f113f3e MC |
201 | { |
202 | if (t == NULL) { | |
203 | time_t now_t; | |
204 | time(&now_t); | |
205 | if (OPENSSL_gmtime(&now_t, tm)) | |
206 | return 1; | |
207 | return 0; | |
208 | } | |
209 | ||
210 | if (t->type == V_ASN1_UTCTIME) | |
211 | return asn1_utctime_to_tm(tm, t); | |
212 | else if (t->type == V_ASN1_GENERALIZEDTIME) | |
213 | return asn1_generalizedtime_to_tm(tm, t); | |
214 | ||
215 | return 0; | |
216 | } | |
1c455bc0 | 217 | |
360ef676 | 218 | int ASN1_TIME_diff(int *pday, int *psec, |
0f113f3e MC |
219 | const ASN1_TIME *from, const ASN1_TIME *to) |
220 | { | |
221 | struct tm tm_from, tm_to; | |
222 | if (!asn1_time_to_tm(&tm_from, from)) | |
223 | return 0; | |
224 | if (!asn1_time_to_tm(&tm_to, to)) | |
225 | return 0; | |
226 | return OPENSSL_gmtime_diff(pday, psec, &tm_from, &tm_to); | |
227 | } |