✏ 编辑: ASN1_STRING_TABLE_get.3

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.\" ========================================================================
.\"
.IX Title "ASN1_STRING_TABLE_ADD 3"
.TH ASN1_STRING_TABLE_ADD 3 "2023-09-11" "1.1.1w" "OpenSSL"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH "NAME"
ASN1_STRING_TABLE, ASN1_STRING_TABLE_add, ASN1_STRING_TABLE_get, ASN1_STRING_TABLE_cleanup \- ASN1_STRING_TABLE manipulation functions
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\& #include <openssl/asn1.h>
\&
\& typedef struct asn1_string_table_st ASN1_STRING_TABLE;
\&
\& int ASN1_STRING_TABLE_add(int nid, long minsize, long maxsize,
\&                           unsigned long mask, unsigned long flags);
\& ASN1_STRING_TABLE * ASN1_STRING_TABLE_get(int nid);
\& void ASN1_STRING_TABLE_cleanup(void);
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
.SS "Types"
.IX Subsection "Types"
\&\fB\s-1ASN1_STRING_TABLE\s0\fR is a table which holds string information
(basically minimum size, maximum size, type and etc) for a \s-1NID\s0 object.
.SS "Functions"
.IX Subsection "Functions"
\&\fIASN1_STRING_TABLE_add()\fR adds a new \fB\s-1ASN1_STRING_TABLE\s0\fR item into the
local \s-1ASN1\s0 string table based on the \fBnid\fR along with other parameters.
.PP
If the item is already in the table, fields of \fB\s-1ASN1_STRING_TABLE\s0\fR are
updated (depending on the values of those parameters, e.g., \fBminsize\fR
and \fBmaxsize\fR >= 0, \fBmask\fR and \fBflags\fR != 0). If the \fBnid\fR is standard,
a copy of the standard \fB\s-1ASN1_STRING_TABLE\s0\fR is created and updated with
other parameters.
.PP
\&\fIASN1_STRING_TABLE_get()\fR searches for an \fB\s-1ASN1_STRING_TABLE\s0\fR item based
on \fBnid\fR. It will search the local table first, then the standard one.
.PP
\&\fIASN1_STRING_TABLE_cleanup()\fR frees all \fB\s-1ASN1_STRING_TABLE\s0\fR items added
by \fIASN1_STRING_TABLE_add()\fR.
.SH "RETURN VALUES"
.IX Header "RETURN VALUES"
\&\fIASN1_STRING_TABLE_add()\fR returns 1 on success, 0 if an error occurred.
.PP
\&\fIASN1_STRING_TABLE_get()\fR returns a valid \fB\s-1ASN1_STRING_TABLE\s0\fR structure
or \fB\s-1NULL\s0\fR if nothing is found.
.PP
\&\fIASN1_STRING_TABLE_cleanup()\fR does not return a value.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\fIERR_get_error\fR\|(3)
.SH "COPYRIGHT"
.IX Header "COPYRIGHT"
Copyright 2017 The OpenSSL Project Authors. All Rights Reserved.
.PP
Licensed under the OpenSSL license (the \*(L"License\*(R").  You may not use
this file except in compliance with the License.  You can obtain a copy
in the file \s-1LICENSE\s0 in the source distribution or at
<https://www.openssl.org/source/license.html>.

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