xref: /openssl/crypto/asn1/a_gentm.c (revision 3c2bdd7d)
1 /*
2  * Copyright 1995-2021 The OpenSSL Project Authors. All Rights Reserved.
3  *
4  * Licensed under the Apache License 2.0 (the "License").  You may not use
5  * this file except in compliance with the License.  You can obtain a copy
6  * in the file LICENSE in the source distribution or at
7  * https://www.openssl.org/source/license.html
8  */
9 
10 /*
11  * GENERALIZEDTIME implementation. Based on UTCTIME
12  */
13 
14 #include <stdio.h>
15 #include <time.h>
16 #include "internal/cryptlib.h"
17 #include <openssl/asn1.h>
18 #include "asn1_local.h"
19 #include <openssl/asn1t.h>
20 
IMPLEMENT_ASN1_DUP_FUNCTION(ASN1_GENERALIZEDTIME)21 IMPLEMENT_ASN1_DUP_FUNCTION(ASN1_GENERALIZEDTIME)
22 
23 /* This is the primary function used to parse ASN1_GENERALIZEDTIME */
24 static int asn1_generalizedtime_to_tm(struct tm *tm,
25                                       const ASN1_GENERALIZEDTIME *d)
26 {
27     /* wrapper around ossl_asn1_time_to_tm */
28     if (d->type != V_ASN1_GENERALIZEDTIME)
29         return 0;
30     return ossl_asn1_time_to_tm(tm, d);
31 }
32 
ASN1_GENERALIZEDTIME_check(const ASN1_GENERALIZEDTIME * d)33 int ASN1_GENERALIZEDTIME_check(const ASN1_GENERALIZEDTIME *d)
34 {
35     return asn1_generalizedtime_to_tm(NULL, d);
36 }
37 
ASN1_GENERALIZEDTIME_set_string(ASN1_GENERALIZEDTIME * s,const char * str)38 int ASN1_GENERALIZEDTIME_set_string(ASN1_GENERALIZEDTIME *s, const char *str)
39 {
40     ASN1_GENERALIZEDTIME t;
41 
42     t.type = V_ASN1_GENERALIZEDTIME;
43     t.length = strlen(str);
44     t.data = (unsigned char *)str;
45     t.flags = 0;
46 
47     if (!ASN1_GENERALIZEDTIME_check(&t))
48         return 0;
49 
50     if (s != NULL && !ASN1_STRING_copy(s, &t))
51         return 0;
52 
53     return 1;
54 }
55 
ASN1_GENERALIZEDTIME_set(ASN1_GENERALIZEDTIME * s,time_t t)56 ASN1_GENERALIZEDTIME *ASN1_GENERALIZEDTIME_set(ASN1_GENERALIZEDTIME *s,
57                                                time_t t)
58 {
59     return ASN1_GENERALIZEDTIME_adj(s, t, 0, 0);
60 }
61 
ASN1_GENERALIZEDTIME_adj(ASN1_GENERALIZEDTIME * s,time_t t,int offset_day,long offset_sec)62 ASN1_GENERALIZEDTIME *ASN1_GENERALIZEDTIME_adj(ASN1_GENERALIZEDTIME *s,
63                                                time_t t, int offset_day,
64                                                long offset_sec)
65 {
66     struct tm *ts;
67     struct tm data;
68 
69     ts = OPENSSL_gmtime(&t, &data);
70     if (ts == NULL)
71         return NULL;
72 
73     if (offset_day || offset_sec) {
74         if (!OPENSSL_gmtime_adj(ts, offset_day, offset_sec))
75             return NULL;
76     }
77 
78     return ossl_asn1_time_from_tm(s, ts, V_ASN1_GENERALIZEDTIME);
79 }
80 
ASN1_GENERALIZEDTIME_print(BIO * bp,const ASN1_GENERALIZEDTIME * tm)81 int ASN1_GENERALIZEDTIME_print(BIO *bp, const ASN1_GENERALIZEDTIME *tm)
82 {
83     if (tm->type != V_ASN1_GENERALIZEDTIME)
84         return 0;
85     return ASN1_TIME_print(bp, tm);
86 }
87