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1=pod
2
3=head1 NAME
4
bb9ad09e 5SSL_CTX_config, SSL_config - configure SSL_CTX or SSL structure
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6
7=head1 SYNOPSIS
8
9 #include <openssl/ssl.h>
10
11 int SSL_CTX_config(SSL_CTX *ctx, const char *name);
12 int SSL_config(SSL *s, const char *name);
13
14=head1 DESCRIPTION
15
16The functions SSL_CTX_config() and SSL_config() configure an B<SSL_CTX> or
17B<SSL> structure using the configuration B<name>.
18
19=head1 NOTES
20
21By calling SSL_CTX_config() or SSL_config() an application can perform many
22complex tasks based on the contents of the configuration file: greatly
23simplifying application configuration code. A degree of future proofing
24can also be achieved: an application can support configuration features
25in newer versions of OpenSSL automatically.
26
27A configuration file must have been previously loaded, for example using
b97fdb57 28CONF_modules_load_file(). See L<config(5)> for details of the configuration
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29file syntax.
30
31=head1 RETURN VALUES
32
33SSL_CTX_config() and SSL_config() return 1 for success or 0 if an error
34occurred.
35
36=head1 EXAMPLE
37
38If the file "config.cnf" contains the following:
39
40 testapp = test_sect
41
42 [test_sect]
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43 # list of configuration modules
44
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45 ssl_conf = ssl_sect
46
47 [ssl_sect]
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48 server = server_section
49
50 [server_section]
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51 RSA.Certificate = server-rsa.pem
52 ECDSA.Certificate = server-ecdsa.pem
53 Ciphers = ALL:!RC4
54
55An application could call:
56
57 if (CONF_modules_load_file("config.cnf", "testapp", 0) <= 0) {
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58 fprintf(stderr, "Error processing config file\n");
59 goto err;
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60 }
61
62 ctx = SSL_CTX_new(TLS_server_method());
63
64 if (SSL_CTX_config(ctx, "server") == 0) {
65 fprintf(stderr, "Error configuring server.\n");
66 goto err;
67 }
68
69In this example two certificates and the cipher list are configured without
70the need for any additional application code.
71
72=head1 SEE ALSO
73
b97fdb57 74L<config(5)>,
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75L<SSL_CONF_cmd(3)>,
76L<CONF_modules_load_file(3)>
77
78=head1 HISTORY
79
fc5ecadd 80The SSL_CTX_config() and SSL_config() functions were added in OpenSSL 1.1.0.
913592d2 81
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82=head1 COPYRIGHT
83
84Copyright 2015-2016 The OpenSSL Project Authors. All Rights Reserved.
85
4746f25a 86Licensed under the Apache License 2.0 (the "License"). You may not use
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87this file except in compliance with the License. You can obtain a copy
88in the file LICENSE in the source distribution or at
89L<https://www.openssl.org/source/license.html>.
90
91=cut