5 X509_cmp_time, X509_cmp_current_time, X509_cmp_timeframe,
6 X509_time_adj, X509_time_adj_ex, X509_gmtime_adj
11 int X509_cmp_time(const ASN1_TIME *asn1_time, time_t *in_tm);
12 int X509_cmp_current_time(const ASN1_TIME *asn1_time);
13 int X509_cmp_timeframe(const X509_VERIFY_PARAM *vpm,
14 const ASN1_TIME *start, const ASN1_TIME *end);
15 ASN1_TIME *X509_time_adj(ASN1_TIME *asn1_time, long offset_sec, time_t *in_tm);
16 ASN1_TIME *X509_time_adj_ex(ASN1_TIME *asn1_time, int offset_day, long
17 offset_sec, time_t *in_tm);
18 ASN1_TIME *X509_gmtime_adj(ASN1_TIME *asn1_time, long offset_sec);
22 X509_cmp_time() compares the ASN1_TIME in I<asn1_time> with the time
25 X509_cmp_current_time() compares the ASN1_TIME in
26 I<asn1_time> with the current time, expressed as time_t.
28 X509_cmp_timeframe() compares the given time period with the reference time
29 included in the verification parameters I<vpm> if they are not NULL and contain
30 B<X509_V_FLAG_USE_CHECK_TIME>; else the current time is used as reference time.
32 X509_time_adj_ex() sets the ASN1_TIME structure I<asn1_time> to the time
33 I<offset_day> and I<offset_sec> after I<in_tm>.
35 X509_time_adj() sets the ASN1_TIME structure I<asn1_time> to the time
36 I<offset_sec> after I<in_tm>. This method can only handle second
37 offsets up to the capacity of long, so the newer X509_time_adj_ex()
38 API should be preferred.
40 In both methods, if I<asn1_time> is NULL, a new ASN1_TIME structure
41 is allocated and returned.
43 In all methods, if I<in_tm> is NULL, the current time, expressed as
46 I<asn1_time> must satisfy the ASN1_TIME format mandated by RFC 5280,
47 i.e., its format must be either YYMMDDHHMMSSZ or YYYYMMDDHHMMSSZ.
49 X509_gmtime_adj() sets the ASN1_TIME structure I<asn1_time> to the time
50 I<offset_sec> after the current time. It is equivalent to calling
51 X509_time_adj() with the last parameter as NULL.
55 Unlike many standard comparison functions, X509_cmp_time() and
56 X509_cmp_current_time() return 0 on error.
60 X509_cmp_time() and X509_cmp_current_time() return -1 if I<asn1_time>
61 is earlier than, or equal to, I<in_tm> (resp. current time), and 1
62 otherwise. These methods return 0 on error.
64 X509_cmp_timeframe() returns 0 if I<vpm> is not NULL and the verification
65 parameters do not contain B<X509_V_FLAG_USE_CHECK_TIME>
66 but do contain B<X509_V_FLAG_NO_CHECK_TIME>. Otherwise it returns
67 1 if the end time is not NULL and the reference time (which has determined as
68 stated above) is past the end time, -1 if the start time is not NULL and the
69 reference time is before, else 0 to indicate that the reference time is in range
70 (implying that the end time is not before the start time if both are present).
72 X509_time_adj(), X509_time_adj_ex() and X509_gmtime_adj() return a pointer to
73 the updated ASN1_TIME structure, and NULL on error.
77 X509_cmp_timeframe() was added in OpenSSL 3.0.
81 Copyright 2017-2018 The OpenSSL Project Authors. All Rights Reserved.
83 Licensed under the Apache License 2.0 (the "License"). You may not use
84 this file except in compliance with the License. You can obtain a copy
85 in the file LICENSE in the source distribution or at
86 L<https://www.openssl.org/source/license.html>.