1 /* Copyright (C) 1995-1998 Eric Young ([email protected])
2 * All rights reserved.
3 *
4 * This package is an SSL implementation written
5 * by Eric Young ([email protected]).
6 * The implementation was written so as to conform with Netscapes SSL.
7 *
8 * This library is free for commercial and non-commercial use as long as
9 * the following conditions are aheared to. The following conditions
10 * apply to all code found in this distribution, be it the RC4, RSA,
11 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
12 * included with this distribution is covered by the same copyright terms
13 * except that the holder is Tim Hudson ([email protected]).
14 *
15 * Copyright remains Eric Young's, and as such any Copyright notices in
16 * the code are not to be removed.
17 * If this package is used in a product, Eric Young should be given attribution
18 * as the author of the parts of the library used.
19 * This can be in the form of a textual message at program startup or
20 * in documentation (online or textual) provided with the package.
21 *
22 * Redistribution and use in source and binary forms, with or without
23 * modification, are permitted provided that the following conditions
24 * are met:
25 * 1. Redistributions of source code must retain the copyright
26 * notice, this list of conditions and the following disclaimer.
27 * 2. Redistributions in binary form must reproduce the above copyright
28 * notice, this list of conditions and the following disclaimer in the
29 * documentation and/or other materials provided with the distribution.
30 * 3. All advertising materials mentioning features or use of this software
31 * must display the following acknowledgement:
32 * "This product includes cryptographic software written by
33 * Eric Young ([email protected])"
34 * The word 'cryptographic' can be left out if the rouines from the library
35 * being used are not cryptographic related :-).
36 * 4. If you include any Windows specific code (or a derivative thereof) from
37 * the apps directory (application code) you must include an acknowledgement:
38 * "This product includes software written by Tim Hudson ([email protected])"
39 *
40 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
43 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
44 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
45 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
46 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
48 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
49 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
50 * SUCH DAMAGE.
51 *
52 * The licence and distribution terms for any publically available version or
53 * derivative of this code cannot be changed. i.e. this code cannot simply be
54 * copied and put under another distribution licence
55 * [including the GNU Public Licence.] */
56
57 #include <openssl/asn1.h>
58 #include <openssl/bytestring.h>
59 #include <openssl/err.h>
60 #include <openssl/mem.h>
61 #include <openssl/posix_time.h>
62
63 #include <stdlib.h>
64 #include <string.h>
65 #include <time.h>
66
67 #include "internal.h"
68
asn1_generalizedtime_to_tm(struct tm * tm,const ASN1_GENERALIZEDTIME * d)69 int asn1_generalizedtime_to_tm(struct tm *tm, const ASN1_GENERALIZEDTIME *d) {
70 if (d->type != V_ASN1_GENERALIZEDTIME) {
71 return 0;
72 }
73 CBS cbs;
74 CBS_init(&cbs, d->data, (size_t)d->length);
75 if (!CBS_parse_generalized_time(&cbs, tm, /*allow_timezone_offset=*/0)) {
76 return 0;
77 }
78 return 1;
79 }
80
ASN1_GENERALIZEDTIME_check(const ASN1_GENERALIZEDTIME * d)81 int ASN1_GENERALIZEDTIME_check(const ASN1_GENERALIZEDTIME *d) {
82 return asn1_generalizedtime_to_tm(NULL, d);
83 }
84
ASN1_GENERALIZEDTIME_set_string(ASN1_GENERALIZEDTIME * s,const char * str)85 int ASN1_GENERALIZEDTIME_set_string(ASN1_GENERALIZEDTIME *s, const char *str) {
86 size_t len = strlen(str);
87 CBS cbs;
88 CBS_init(&cbs, (const uint8_t *)str, len);
89 if (!CBS_parse_generalized_time(&cbs, /*out_tm=*/NULL,
90 /*allow_timezone_offset=*/0)) {
91 return 0;
92 }
93 if (s != NULL) {
94 if (!ASN1_STRING_set(s, str, len)) {
95 return 0;
96 }
97 s->type = V_ASN1_GENERALIZEDTIME;
98 }
99 return 1;
100 }
101
ASN1_GENERALIZEDTIME_set(ASN1_GENERALIZEDTIME * s,int64_t posix_time)102 ASN1_GENERALIZEDTIME *ASN1_GENERALIZEDTIME_set(ASN1_GENERALIZEDTIME *s,
103 int64_t posix_time) {
104 return ASN1_GENERALIZEDTIME_adj(s, posix_time, 0, 0);
105 }
106
ASN1_GENERALIZEDTIME_adj(ASN1_GENERALIZEDTIME * s,int64_t posix_time,int offset_day,long offset_sec)107 ASN1_GENERALIZEDTIME *ASN1_GENERALIZEDTIME_adj(ASN1_GENERALIZEDTIME *s,
108 int64_t posix_time, int offset_day,
109 long offset_sec) {
110 struct tm data;
111 if (!OPENSSL_posix_to_tm(posix_time, &data)) {
112 return NULL;
113 }
114
115 if (offset_day || offset_sec) {
116 if (!OPENSSL_gmtime_adj(&data, offset_day, offset_sec)) {
117 return NULL;
118 }
119 }
120
121 if (data.tm_year < 0 - 1900 || data.tm_year > 9999 - 1900) {
122 OPENSSL_PUT_ERROR(ASN1, ASN1_R_ILLEGAL_TIME_VALUE);
123 return NULL;
124 }
125
126 char buf[16];
127 int ret = snprintf(buf, sizeof(buf), "%04d%02d%02d%02d%02d%02dZ",
128 data.tm_year + 1900, data.tm_mon + 1, data.tm_mday,
129 data.tm_hour, data.tm_min, data.tm_sec);
130 if (ret != (int)(sizeof(buf) - 1)) {
131 abort(); // |snprintf| should neither truncate nor write fewer bytes.
132 }
133
134 int free_s = 0;
135 if (s == NULL) {
136 free_s = 1;
137 s = ASN1_UTCTIME_new();
138 if (s == NULL) {
139 return NULL;
140 }
141 }
142
143 if (!ASN1_STRING_set(s, buf, strlen(buf))) {
144 if (free_s) {
145 ASN1_UTCTIME_free(s);
146 }
147 return NULL;
148 }
149 s->type = V_ASN1_GENERALIZEDTIME;
150 return s;
151 }
152