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# Conflicts:
#	README.md
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Zhi Guan
2017-02-14 16:12:29 +08:00
parent d2254170b8
commit 43fed1108d
3503 changed files with 320546 additions and 408546 deletions
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doc/crypto/ASN1_STRING_length.pod
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@@ -3,14 +3,15 @@
=head1 NAME
ASN1_STRING_dup, ASN1_STRING_cmp, ASN1_STRING_set, ASN1_STRING_length,
ASN1_STRING_length_set, ASN1_STRING_type, ASN1_STRING_data, ASN1_STRING_to_UTF8 -
ASN1_STRING utility functions
ASN1_STRING_type, ASN1_STRING_get0_data, ASN1_STRING_data,
ASN1_STRING_to_UTF8 - ASN1_STRING utility functions
=head1 SYNOPSIS
#include <openssl/asn1.h>
int ASN1_STRING_length(ASN1_STRING *x);
const unsigned char * ASN1_STRING_get0_data(const ASN1_STRING *x);
unsigned char * ASN1_STRING_data(ASN1_STRING *x);
ASN1_STRING * ASN1_STRING_dup(ASN1_STRING *a);
@@ -19,9 +20,9 @@ ASN1_STRING utility functions
int ASN1_STRING_set(ASN1_STRING *str, const void *data, int len);
int ASN1_STRING_type(ASN1_STRING *x);
int ASN1_STRING_type(const ASN1_STRING *x);
int ASN1_STRING_to_UTF8(unsigned char **out, ASN1_STRING *in);
int ASN1_STRING_to_UTF8(unsigned char **out, const ASN1_STRING *in);
=head1 DESCRIPTION
@@ -29,10 +30,14 @@ These functions allow an B<ASN1_STRING> structure to be manipulated.
ASN1_STRING_length() returns the length of the content of B<x>.
ASN1_STRING_data() returns an internal pointer to the data of B<x>.
ASN1_STRING_get0_data() returns an internal pointer to the data of B<x>.
Since this is an internal pointer it should B<not> be freed or
modified in any way.
ASN1_STRING_data() is similar to ASN1_STRING_get0_data() except the
returned value is not constant. This function is deprecated:
applications should use ASN1_STRING_get0_data() instead.
ASN1_STRING_dup() returns a copy of the structure B<a>.
ASN1_STRING_cmp() compares B<a> and B<b> returning 0 if the two
@@ -48,12 +53,12 @@ such as B<V_ASN1_OCTET_STRING>.
ASN1_STRING_to_UTF8() converts the string B<in> to UTF8 format, the
converted data is allocated in a buffer in B<*out>. The length of
B<out> is returned or a negative error code. The buffer B<*out>
should be free using OPENSSL_free().
should be freed using OPENSSL_free().
=head1 NOTES
Almost all ASN1 types in OpenSSL are represented as an B<ASN1_STRING>
structure. Other types such as B<ASN1_OCTET_STRING> are simply typedefed
structure. Other types such as B<ASN1_OCTET_STRING> are simply typedef'ed
to B<ASN1_STRING> and the functions call the B<ASN1_STRING> equivalents.
B<ASN1_STRING> is also used for some B<CHOICE> types which consist
entirely of primitive string types such as B<DirectoryString> and
@@ -72,12 +77,17 @@ character in big endian format, UTF8String will be in UTF8 format.
Similar care should be take to ensure the data is in the correct format
when calling ASN1_STRING_set().
=head1 RETURN VALUES
=head1 SEE ALSO
L<ERR_get_error(3)|ERR_get_error(3)>
L<ERR_get_error(3)>
=head1 HISTORY
=head1 COPYRIGHT
Copyright 2002-2016 The OpenSSL Project Authors. All Rights Reserved.
Licensed under the OpenSSL license (the "License"). You may not use
this file except in compliance with the License. You can obtain a copy
in the file LICENSE in the source distribution or at
L<https://www.openssl.org/source/license.html>.
=cut