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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> | |
b39fc560 | 66 | #include "internal/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 | |
6b691a5c | 74 | ASN1_TIME *ASN1_TIME_set(ASN1_TIME *s, time_t t) |
0f113f3e MC |
75 | { |
76 | return ASN1_TIME_adj(s, t, 0, 0); | |
77 | } | |
87d3a0cd DSH |
78 | |
79 | ASN1_TIME *ASN1_TIME_adj(ASN1_TIME *s, time_t t, | |
0f113f3e MC |
80 | int offset_day, long offset_sec) |
81 | { | |
82 | struct tm *ts; | |
83 | struct tm data; | |
84 | ||
85 | ts = OPENSSL_gmtime(&t, &data); | |
86 | if (ts == NULL) { | |
87 | ASN1err(ASN1_F_ASN1_TIME_ADJ, ASN1_R_ERROR_GETTING_TIME); | |
88 | return NULL; | |
89 | } | |
90 | if (offset_day || offset_sec) { | |
91 | if (!OPENSSL_gmtime_adj(ts, offset_day, offset_sec)) | |
92 | return NULL; | |
93 | } | |
94 | if ((ts->tm_year >= 50) && (ts->tm_year < 150)) | |
95 | return ASN1_UTCTIME_adj(s, t, offset_day, offset_sec); | |
96 | return ASN1_GENERALIZEDTIME_adj(s, t, offset_day, offset_sec); | |
97 | } | |
02e4fbed | 98 | |
359b0c9f | 99 | int ASN1_TIME_check(const ASN1_TIME *t) |
0f113f3e MC |
100 | { |
101 | if (t->type == V_ASN1_GENERALIZEDTIME) | |
102 | return ASN1_GENERALIZEDTIME_check(t); | |
103 | else if (t->type == V_ASN1_UTCTIME) | |
104 | return ASN1_UTCTIME_check(t); | |
105 | return 0; | |
106 | } | |
02e4fbed DSH |
107 | |
108 | /* Convert an ASN1_TIME structure to GeneralizedTime */ | |
0f113f3e MC |
109 | ASN1_GENERALIZEDTIME *ASN1_TIME_to_generalizedtime(ASN1_TIME *t, |
110 | ASN1_GENERALIZEDTIME **out) | |
111 | { | |
112 | ASN1_GENERALIZEDTIME *ret; | |
113 | char *str; | |
114 | int newlen; | |
115 | ||
116 | if (!ASN1_TIME_check(t)) | |
117 | return NULL; | |
118 | ||
75ebbd9a RS |
119 | if (out == NULL || *out == NULL) { |
120 | if ((ret = ASN1_GENERALIZEDTIME_new()) == NULL) | |
0f113f3e MC |
121 | return NULL; |
122 | if (out) | |
123 | *out = ret; | |
124 | } else | |
125 | ret = *out; | |
126 | ||
127 | /* If already GeneralizedTime just copy across */ | |
128 | if (t->type == V_ASN1_GENERALIZEDTIME) { | |
129 | if (!ASN1_STRING_set(ret, t->data, t->length)) | |
130 | return NULL; | |
131 | return ret; | |
132 | } | |
133 | ||
134 | /* grow the string */ | |
135 | if (!ASN1_STRING_set(ret, NULL, t->length + 2)) | |
136 | return NULL; | |
137 | /* ASN1_STRING_set() allocated 'len + 1' bytes. */ | |
138 | newlen = t->length + 2 + 1; | |
139 | str = (char *)ret->data; | |
140 | /* Work out the century and prepend */ | |
141 | if (t->data[0] >= '5') | |
7644a9ae | 142 | OPENSSL_strlcpy(str, "19", newlen); |
0f113f3e | 143 | else |
7644a9ae | 144 | OPENSSL_strlcpy(str, "20", newlen); |
0f113f3e | 145 | |
7644a9ae | 146 | OPENSSL_strlcat(str, (char *)t->data, newlen); |
0f113f3e MC |
147 | |
148 | return ret; | |
149 | } | |
33ab2e31 DSH |
150 | |
151 | int ASN1_TIME_set_string(ASN1_TIME *s, const char *str) | |
0f113f3e MC |
152 | { |
153 | ASN1_TIME t; | |
154 | ||
155 | t.length = strlen(str); | |
156 | t.data = (unsigned char *)str; | |
157 | t.flags = 0; | |
158 | ||
159 | t.type = V_ASN1_UTCTIME; | |
160 | ||
161 | if (!ASN1_TIME_check(&t)) { | |
162 | t.type = V_ASN1_GENERALIZEDTIME; | |
163 | if (!ASN1_TIME_check(&t)) | |
164 | return 0; | |
165 | } | |
166 | ||
167 | if (s && !ASN1_STRING_copy((ASN1_STRING *)s, (ASN1_STRING *)&t)) | |
168 | return 0; | |
169 | ||
170 | return 1; | |
171 | } | |
359b0c9f | 172 | |
1c455bc0 | 173 | static int asn1_time_to_tm(struct tm *tm, const ASN1_TIME *t) |
0f113f3e MC |
174 | { |
175 | if (t == NULL) { | |
176 | time_t now_t; | |
177 | time(&now_t); | |
178 | if (OPENSSL_gmtime(&now_t, tm)) | |
179 | return 1; | |
180 | return 0; | |
181 | } | |
182 | ||
183 | if (t->type == V_ASN1_UTCTIME) | |
184 | return asn1_utctime_to_tm(tm, t); | |
185 | else if (t->type == V_ASN1_GENERALIZEDTIME) | |
186 | return asn1_generalizedtime_to_tm(tm, t); | |
187 | ||
188 | return 0; | |
189 | } | |
1c455bc0 | 190 | |
360ef676 | 191 | int ASN1_TIME_diff(int *pday, int *psec, |
0f113f3e MC |
192 | const ASN1_TIME *from, const ASN1_TIME *to) |
193 | { | |
194 | struct tm tm_from, tm_to; | |
195 | if (!asn1_time_to_tm(&tm_from, from)) | |
196 | return 0; | |
197 | if (!asn1_time_to_tm(&tm_to, to)) | |
198 | return 0; | |
199 | return OPENSSL_gmtime_diff(pday, psec, &tm_from, &tm_to); | |
200 | } | |
0d0099ea DSH |
201 | |
202 | int ASN1_TIME_print(BIO *bp, const ASN1_TIME *tm) | |
203 | { | |
204 | if (tm->type == V_ASN1_UTCTIME) | |
205 | return ASN1_UTCTIME_print(bp, tm); | |
206 | if (tm->type == V_ASN1_GENERALIZEDTIME) | |
207 | return ASN1_GENERALIZEDTIME_print(bp, tm); | |
208 | BIO_write(bp, "Bad time value", 14); | |
209 | return (0); | |
210 | } |