mirror of https://github.com/openssl/openssl
88 lines
3.4 KiB
Plaintext
88 lines
3.4 KiB
Plaintext
=pod
|
|
|
|
=head1 NAME
|
|
|
|
SSL_CTX_use_serverinfo_ex,
|
|
SSL_CTX_use_serverinfo,
|
|
SSL_CTX_use_serverinfo_file
|
|
- use serverinfo extension
|
|
|
|
=head1 SYNOPSIS
|
|
|
|
#include <openssl/ssl.h>
|
|
|
|
int SSL_CTX_use_serverinfo_ex(SSL_CTX *ctx, unsigned int version,
|
|
const unsigned char *serverinfo,
|
|
size_t serverinfo_length);
|
|
|
|
int SSL_CTX_use_serverinfo(SSL_CTX *ctx, const unsigned char *serverinfo,
|
|
size_t serverinfo_length);
|
|
|
|
int SSL_CTX_use_serverinfo_file(SSL_CTX *ctx, const char *file);
|
|
|
|
=head1 DESCRIPTION
|
|
|
|
These functions load "serverinfo" TLS extensions into the SSL_CTX. A
|
|
"serverinfo" extension is returned in response to an empty ClientHello
|
|
Extension.
|
|
|
|
SSL_CTX_use_serverinfo_ex() loads one or more serverinfo extensions from
|
|
a byte array into B<ctx>. The B<version> parameter specifies the format of the
|
|
byte array provided in B<*serverinfo> which is of length B<serverinfo_length>.
|
|
|
|
If B<version> is B<SSL_SERVERINFOV2> then the extensions in the array must
|
|
consist of a 4-byte context, a 2-byte Extension Type, a 2-byte length, and then
|
|
length bytes of extension_data. The context and type values have the same
|
|
meaning as for L<SSL_CTX_add_custom_ext(3)>. If serverinfo is being loaded for
|
|
extensions to be added to a Certificate message, then the extension will only
|
|
be added for the first certificate in the message (which is always the
|
|
end-entity certificate).
|
|
|
|
If B<version> is B<SSL_SERVERINFOV1> then the extensions in the array must
|
|
consist of a 2-byte Extension Type, a 2-byte length, and then length bytes of
|
|
extension_data. The type value has the same meaning as for
|
|
L<SSL_CTX_add_custom_ext(3)>. The following default context value will be used
|
|
in this case:
|
|
|
|
SSL_EXT_TLS1_2_AND_BELOW_ONLY | SSL_EXT_CLIENT_HELLO
|
|
| SSL_EXT_TLS1_2_SERVER_HELLO | SSL_EXT_IGNORE_ON_RESUMPTION
|
|
|
|
SSL_CTX_use_serverinfo() does the same thing as SSL_CTX_use_serverinfo_ex()
|
|
except that there is no B<version> parameter so a default version of
|
|
SSL_SERVERINFOV1 is used instead.
|
|
|
|
SSL_CTX_use_serverinfo_file() loads one or more serverinfo extensions from
|
|
B<file> into B<ctx>. The extensions must be in PEM format. Each extension
|
|
must be in a format as described above for SSL_CTX_use_serverinfo_ex(). Each
|
|
PEM extension name must begin with the phrase "BEGIN SERVERINFOV2 FOR " for
|
|
SSL_SERVERINFOV2 data or "BEGIN SERVERINFO FOR " for SSL_SERVERINFOV1 data.
|
|
|
|
If more than one certificate (RSA/DSA) is installed using
|
|
SSL_CTX_use_certificate(), the serverinfo extension will be loaded into the
|
|
last certificate installed. If e.g. the last item was an RSA certificate, the
|
|
loaded serverinfo extension data will be loaded for that certificate. To
|
|
use the serverinfo extension for multiple certificates,
|
|
SSL_CTX_use_serverinfo() needs to be called multiple times, once B<after>
|
|
each time a certificate is loaded via a call to SSL_CTX_use_certificate().
|
|
|
|
=head1 RETURN VALUES
|
|
|
|
On success, the functions return 1.
|
|
On failure, the functions return 0. Check out the error stack to find out
|
|
the reason.
|
|
|
|
=head1 SEE ALSO
|
|
|
|
L<ssl(7)>
|
|
|
|
=head1 COPYRIGHT
|
|
|
|
Copyright 2013-2017 The OpenSSL Project Authors. All Rights Reserved.
|
|
|
|
Licensed under the Apache License 2.0 (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
|