61 lines
2.1 KiB
Text
61 lines
2.1 KiB
Text
=pod
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=head1 NAME
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X509_cmp_time, X509_cmp_current_time, X509_time_adj, X509_time_adj_ex
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- X509 time functions
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=head1 SYNOPSIS
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int X509_cmp_time(const ASN1_TIME *asn1_time, time_t *in_tm);
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int X509_cmp_current_time(const ASN1_TIME *asn1_time);
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ASN1_TIME *X509_time_adj(ASN1_TIME *asn1_time, long offset_sec, time_t *in_tm);
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ASN1_TIME *X509_time_adj_ex(ASN1_TIME *asn1_time, int offset_day, long
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offset_sec, time_t *in_tm);
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=head1 DESCRIPTION
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X509_cmp_time() compares the ASN1_TIME in B<asn1_time> with the time
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in <cmp_time>. X509_cmp_current_time() compares the ASN1_TIME in
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B<asn1_time> with the current time, expressed as time_t. B<asn1_time>
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must satisfy the ASN1_TIME format mandated by RFC 5280, i.e., its
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format must be either YYMMDDHHMMSSZ or YYYYMMDDHHMMSSZ.
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X509_time_adj_ex() sets the ASN1_TIME structure B<asn1_time> to the time
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B<offset_day> and B<offset_sec> after B<in_tm>.
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X509_time_adj() sets the ASN1_TIME structure B<asn1_time> to the time
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B<offset_sec> after B<in_tm>. This method can only handle second
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offsets up to the capacity of long, so the newer X509_time_adj_ex()
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API should be preferred.
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In both methods, if B<asn1_time> is NULL, a new ASN1_TIME structure
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is allocated and returned.
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In all methods, if B<in_tm> is NULL, the current time, expressed as
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time_t, is used.
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=head1 BUGS
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Unlike many standard comparison functions, X509_cmp_time() and
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X509_cmp_current_time() return 0 on error.
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=head1 RETURN VALUES
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X509_cmp_time() and X509_cmp_current_time() return -1 if B<asn1_time>
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is earlier than, or equal to, B<cmp_time> (resp. current time), and 1
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otherwise. These methods return 0 on error.
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X509_time_ad() and X509_time_adj_ex() return a pointer to the updated
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ASN1_TIME structure, and NULL on error.
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=head1 COPYRIGHT
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Copyright 2017 The OpenSSL Project Authors. All Rights Reserved.
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Licensed under the OpenSSL license (the "License"). You may not use
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this file except in compliance with the License. You can obtain a copy
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in the file LICENSE in the source distribution or at
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L<https://www.openssl.org/source/license.html>.
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=cut
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