| 1 | =pod
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| 2 |
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| 3 | =head1 NAME
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| 4 |
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| 5 | SSL_CTX_config, SSL_config - configure SSL_CTX or SSL structure
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| 6 |
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| 7 | =head1 SYNOPSIS
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| 8 |
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| 9 | #include <openssl/ssl.h>
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| 10 |
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| 11 | int SSL_CTX_config(SSL_CTX *ctx, const char *name);
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| 12 | int SSL_config(SSL *s, const char *name);
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| 13 |
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| 14 | =head1 DESCRIPTION
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| 15 |
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| 16 | The functions SSL_CTX_config() and SSL_config() configure an B<SSL_CTX> or
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| 17 | B<SSL> structure using the configuration B<name>.
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| 18 |
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| 19 | By calling SSL_CTX_config() or SSL_config() an application can perform many
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| 20 | complex tasks based on the contents of the configuration file: greatly
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| 21 | simplifying application configuration code. A degree of future proofing
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| 22 | can also be achieved: an application can support configuration features
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| 23 | in newer versions of OpenSSL automatically.
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| 24 |
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| 25 | A configuration file must have been previously loaded, for example using
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| 26 | CONF_modules_load_file(). See L<config(5)> for details of the configuration
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| 27 | file syntax.
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| 28 |
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| 29 | =head1 RETURN VALUES
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| 30 |
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| 31 | SSL_CTX_config() and SSL_config() return 1 for success or 0 if an error
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| 32 | occurred.
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| 33 |
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| 34 | =head1 EXAMPLES
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| 35 |
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| 36 | If the file "config.cnf" contains the following:
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| 37 |
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| 38 | testapp = test_sect
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| 39 |
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| 40 | [test_sect]
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| 41 | # list of configuration modules
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| 42 |
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| 43 | ssl_conf = ssl_sect
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| 44 |
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| 45 | [ssl_sect]
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| 46 | server = server_section
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| 47 |
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| 48 | [server_section]
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| 49 | RSA.Certificate = server-rsa.pem
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| 50 | ECDSA.Certificate = server-ecdsa.pem
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| 51 | Ciphers = ALL:!RC4
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| 52 |
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| 53 | An application could call:
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| 54 |
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| 55 | if (CONF_modules_load_file("config.cnf", "testapp", 0) <= 0) {
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| 56 | fprintf(stderr, "Error processing config file\n");
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| 57 | goto err;
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| 58 | }
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| 59 |
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| 60 | ctx = SSL_CTX_new(TLS_server_method());
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| 61 |
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| 62 | if (SSL_CTX_config(ctx, "server") == 0) {
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| 63 | fprintf(stderr, "Error configuring server.\n");
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| 64 | goto err;
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| 65 | }
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| 66 |
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| 67 | In this example two certificates and the cipher list are configured without
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| 68 | the need for any additional application code.
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| 69 |
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| 70 | =head1 SEE ALSO
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| 71 |
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| 72 | L<ssl(7)>,
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| 73 | L<config(5)>,
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| 74 | L<SSL_CONF_cmd(3)>,
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| 75 | L<CONF_modules_load_file(3)>
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| 76 |
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| 77 | =head1 HISTORY
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| 78 |
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| 79 | The SSL_CTX_config() and SSL_config() functions were added in OpenSSL 1.1.0.
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| 80 |
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| 81 | =head1 COPYRIGHT
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| 82 |
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| 83 | Copyright 2015-2020 The OpenSSL Project Authors. All Rights Reserved.
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| 84 |
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| 85 | Licensed under the Apache License 2.0 (the "License"). You may not use
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| 86 | this file except in compliance with the License. You can obtain a copy
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| 87 | in the file LICENSE in the source distribution or at
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| 88 | L<https://www.openssl.org/source/license.html>.
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| 89 |
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| 90 | =cut
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