1=pod 2 3=head1 NAME 4 5X509_cmp_time, X509_cmp_current_time, X509_time_adj, X509_time_adj_ex 6- X509 time functions 7 8=head1 SYNOPSIS 9 10 int X509_cmp_time(const ASN1_TIME *asn1_time, time_t *in_tm); 11 int X509_cmp_current_time(const ASN1_TIME *asn1_time); 12 ASN1_TIME *X509_time_adj(ASN1_TIME *asn1_time, long offset_sec, time_t *in_tm); 13 ASN1_TIME *X509_time_adj_ex(ASN1_TIME *asn1_time, int offset_day, long 14 offset_sec, time_t *in_tm); 15 16=head1 DESCRIPTION 17 18X509_cmp_time() compares the ASN1_TIME in B<asn1_time> with the time 19in <cmp_time>. X509_cmp_current_time() compares the ASN1_TIME in 20B<asn1_time> with the current time, expressed as time_t. B<asn1_time> 21must satisfy the ASN1_TIME format mandated by RFC 5280, i.e., its 22format must be either YYMMDDHHMMSSZ or YYYYMMDDHHMMSSZ. 23 24X509_time_adj_ex() sets the ASN1_TIME structure B<asn1_time> to the time 25B<offset_day> and B<offset_sec> after B<in_tm>. 26 27X509_time_adj() sets the ASN1_TIME structure B<asn1_time> to the time 28B<offset_sec> after B<in_tm>. This method can only handle second 29offsets up to the capacity of long, so the newer X509_time_adj_ex() 30API should be preferred. 31 32In both methods, if B<asn1_time> is NULL, a new ASN1_TIME structure 33is allocated and returned. 34 35In all methods, if B<in_tm> is NULL, the current time, expressed as 36time_t, is used. 37 38=head1 BUGS 39 40Unlike many standard comparison functions, X509_cmp_time() and 41X509_cmp_current_time() return 0 on error. 42 43=head1 RETURN VALUES 44 45X509_cmp_time() and X509_cmp_current_time() return -1 if B<asn1_time> 46is earlier than, or equal to, B<cmp_time> (resp. current time), and 1 47otherwise. These methods return 0 on error. 48 49X509_time_adj() and X509_time_adj_ex() return a pointer to the updated 50ASN1_TIME structure, and NULL on error. 51 52=head1 COPYRIGHT 53 54Copyright 2017-2018 The OpenSSL Project Authors. All Rights Reserved. 55 56Licensed under the OpenSSL license (the "License"). You may not use 57this file except in compliance with the License. You can obtain a copy 58in the file LICENSE in the source distribution or at 59L<https://www.openssl.org/source/license.html>. 60 61=cut 62