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b077aed33b
Migrate to OpenSSL 3.0 in advance of FreeBSD 14.0. OpenSSL 1.1.1 (the version we were previously using) will be EOL as of 2023-09-11. Most of the base system has already been updated for a seamless switch to OpenSSL 3.0. For many components we've added `-DOPENSSL_API_COMPAT=0x10100000L` to CFLAGS to specify the API version, which avoids deprecation warnings from OpenSSL 3.0. Changes have also been made to avoid OpenSSL APIs that were already deprecated in OpenSSL 1.1.1. The process of updating to contemporary APIs can continue after this merge. Additional changes are still required for libarchive and Kerberos- related libraries or tools; workarounds will immediately follow this commit. Fixes are in progress in the upstream projects and will be incorporated when those are next updated. There are some performance regressions in benchmarks (certain tests in `openssl speed`) and in some OpenSSL consumers in ports (e.g. haproxy). Investigation will continue for these. Netflix's testing showed no functional regression and a rather small, albeit statistically significant, increase in CPU consumption with OpenSSL 3.0. Thanks to ngie@ and des@ for updating base system components, to antoine@ and bofh@ for ports exp-runs and port fixes/workarounds, and to Netflix and everyone who tested prior to commit or contributed to this update in other ways. PR: 271615 PR: 271656 [exp-run] Relnotes: Yes Sponsored by: The FreeBSD Foundation
88 lines
2.7 KiB
Plaintext
88 lines
2.7 KiB
Plaintext
=pod
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=head1 NAME
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OPENSSL_config, OPENSSL_no_config - simple OpenSSL configuration functions
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=head1 SYNOPSIS
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#include <openssl/conf.h>
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The following functions have been deprecated since OpenSSL 1.1.0, and can be
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hidden entirely by defining B<OPENSSL_API_COMPAT> with a suitable version value,
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see L<openssl_user_macros(7)>:
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void OPENSSL_config(const char *appname);
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void OPENSSL_no_config(void);
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=head1 DESCRIPTION
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OPENSSL_config() configures OpenSSL using the standard B<openssl.cnf> and
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reads from the application section B<appname>. If B<appname> is NULL then
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the default section, B<openssl_conf>, will be used.
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Errors are silently ignored.
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Multiple calls have no effect.
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OPENSSL_no_config() disables configuration. If called before OPENSSL_config()
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no configuration takes place.
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If the application is built with B<OPENSSL_LOAD_CONF> defined, then a
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call to OpenSSL_add_all_algorithms() will implicitly call OPENSSL_config()
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first.
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=head1 NOTES
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The OPENSSL_config() function is designed to be a very simple "call it and
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forget it" function.
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It is however B<much> better than nothing. Applications which need finer
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control over their configuration functionality should use the configuration
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functions such as CONF_modules_load() directly. This function is deprecated
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and its use should be avoided.
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Applications should instead call CONF_modules_load() during
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initialization (that is before starting any threads).
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There are several reasons why calling the OpenSSL configuration routines is
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advisable. For example, to load dynamic ENGINEs from shared libraries (DSOs).
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However, very few applications currently support the control interface and so
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very few can load and use dynamic ENGINEs. Equally in future more sophisticated
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ENGINEs will require certain control operations to customize them. If an
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application calls OPENSSL_config() it doesn't need to know or care about
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ENGINE control operations because they can be performed by editing a
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configuration file.
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=head1 ENVIRONMENT
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=over 4
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=item B<OPENSSL_CONF>
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The path to the config file.
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Ignored in set-user-ID and set-group-ID programs.
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=back
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=head1 RETURN VALUES
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Neither OPENSSL_config() nor OPENSSL_no_config() return a value.
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=head1 SEE ALSO
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L<config(5)>,
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L<CONF_modules_load_file(3)>
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=head1 HISTORY
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The OPENSSL_no_config() and OPENSSL_config() functions were
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deprecated in OpenSSL 1.1.0 by OPENSSL_init_crypto().
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=head1 COPYRIGHT
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Copyright 2004-2021 The OpenSSL Project Authors. All Rights Reserved.
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Licensed under the Apache License 2.0 (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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