217 lines
6.3 KiB
Groff
Executable File
217 lines
6.3 KiB
Groff
Executable File
.\" Automatically generated by Pod::Man 2.25 (Pod::Simple 3.16)
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.rm #[ #] #H #V #F C
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.\" ========================================================================
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.\"
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.IX Title "SSL_CTX_CONFIG 3"
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.TH SSL_CTX_CONFIG 3 "2020-03-02" "3.0.0-dev" "OpenSSL"
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.\" For nroff, turn off justification. Always turn off hyphenation; it makes
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.\" way too many mistakes in technical documents.
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.if n .ad l
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.nh
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.SH "NAME"
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SSL_CTX_config, SSL_config \- configure SSL_CTX or SSL structure
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.SH "SYNOPSIS"
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.IX Header "SYNOPSIS"
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.Vb 1
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\& #include <openssl/ssl.h>
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\&
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\& int SSL_CTX_config(SSL_CTX *ctx, const char *name);
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\& int SSL_config(SSL *s, const char *name);
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.Ve
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.SH "DESCRIPTION"
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.IX Header "DESCRIPTION"
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The functions \fISSL_CTX_config()\fR and \fISSL_config()\fR configure an \fB\s-1SSL_CTX\s0\fR or
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\&\fB\s-1SSL\s0\fR structure using the configuration \fBname\fR.
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.SH "NOTES"
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.IX Header "NOTES"
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By calling \fISSL_CTX_config()\fR or \fISSL_config()\fR an application can perform many
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complex tasks based on the contents of the configuration file: greatly
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simplifying application configuration code. A degree of future proofing
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can also be achieved: an application can support configuration features
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in newer versions of OpenSSL automatically.
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.PP
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A configuration file must have been previously loaded, for example using
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\&\fICONF_modules_load_file()\fR. See \fIconfig\fR\|(5) for details of the configuration
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file syntax.
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.SH "RETURN VALUES"
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.IX Header "RETURN VALUES"
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\&\fISSL_CTX_config()\fR and \fISSL_config()\fR return 1 for success or 0 if an error
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occurred.
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.SH "EXAMPLES"
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.IX Header "EXAMPLES"
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If the file \*(L"config.cnf\*(R" contains the following:
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.PP
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.Vb 1
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\& testapp = test_sect
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\&
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\& [test_sect]
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\& # list of configuration modules
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\&
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\& ssl_conf = ssl_sect
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\&
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\& [ssl_sect]
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\& server = server_section
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\&
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\& [server_section]
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\& RSA.Certificate = server\-rsa.pem
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\& ECDSA.Certificate = server\-ecdsa.pem
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\& Ciphers = ALL:!RC4
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.Ve
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.PP
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An application could call:
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.PP
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.Vb 4
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\& if (CONF_modules_load_file("config.cnf", "testapp", 0) <= 0) {
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\& fprintf(stderr, "Error processing config file\en");
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\& goto err;
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\& }
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\&
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\& ctx = SSL_CTX_new(TLS_server_method());
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\&
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\& if (SSL_CTX_config(ctx, "server") == 0) {
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\& fprintf(stderr, "Error configuring server.\en");
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\& goto err;
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\& }
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.Ve
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.PP
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In this example two certificates and the cipher list are configured without
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the need for any additional application code.
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.SH "SEE ALSO"
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.IX Header "SEE ALSO"
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\&\fIssl\fR\|(7),
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\&\fIconfig\fR\|(5),
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\&\fISSL_CONF_cmd\fR\|(3),
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\&\fICONF_modules_load_file\fR\|(3)
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.SH "HISTORY"
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.IX Header "HISTORY"
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The \fISSL_CTX_config()\fR and \fISSL_config()\fR functions were added in OpenSSL 1.1.0.
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.SH "COPYRIGHT"
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.IX Header "COPYRIGHT"
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Copyright 2015\-2016 The OpenSSL Project Authors. All Rights Reserved.
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.PP
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Licensed under the Apache License 2.0 (the \*(L"License\*(R"). 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 \s-1LICENSE\s0 in the source distribution or at
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<https://www.openssl.org/source/license.html>.
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