mirror of https://github.com/openssl/openssl.git
57 lines
2.0 KiB
Plaintext
57 lines
2.0 KiB
Plaintext
=pod
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=head1 NAME
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SSL_CTX_use_serverinfo, SSL_CTX_use_serverinfo_file - use serverinfo extension
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=head1 SYNOPSIS
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#include <openssl/ssl.h>
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int SSL_CTX_use_serverinfo(SSL_CTX *ctx, const unsigned char *serverinfo,
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size_t serverinfo_length);
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int SSL_CTX_use_serverinfo_file(SSL_CTX *ctx, const char *file);
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=head1 DESCRIPTION
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These functions load "serverinfo" TLS ServerHello Extensions into the SSL_CTX.
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A "serverinfo" extension is returned in response to an empty ClientHello
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Extension.
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SSL_CTX_use_serverinfo() loads one or more serverinfo extensions from
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a byte array into B<ctx>. The extensions must be concatenated into a
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sequence of bytes. Each extension must consist of a 2-byte Extension Type,
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a 2-byte length, and then length bytes of extension_data.
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SSL_CTX_use_serverinfo_file() loads one or more serverinfo extensions from
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B<file> into B<ctx>. The extensions must be in PEM format. Each extension
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must consist of a 2-byte Extension Type, a 2-byte length, and then length
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bytes of extension_data. Each PEM extension name must begin with the phrase
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"BEGIN SERVERINFO FOR ".
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If more than one certificate (RSA/DSA) is installed using
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SSL_CTX_use_certificate(), the serverinfo extension will be loaded into the
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last certificate installed. If e.g. the last item was a RSA certificate, the
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loaded serverinfo extension data will be loaded for that certificate. To
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use the serverinfo extension for multiple certificates,
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SSL_CTX_use_serverinfo() needs to be called multiple times, once B<after>
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each time a certificate is loaded.
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=head1 RETURN VALUES
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On success, the functions return 1.
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On failure, the functions return 0. Check out the error stack to find out
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the reason.
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=head1 COPYRIGHT
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Copyright 2013-2016 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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