mirror of
https://github.com/openssl/openssl.git
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251 lines
7.5 KiB
Plaintext
251 lines
7.5 KiB
Plaintext
=pod
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=head1 NAME
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OPENSSL_VERSION_MAJOR, OPENSSL_VERSION_MINOR, OPENSSL_VERSION_PATCH,
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OPENSSL_VERSION_PRE_RELEASE, OPENSSL_VERSION_BUILD_METADATA,
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OPENSSL_VERSION_TEXT, OPENSSL_VERSION_PREREQ, OPENSSL_version_major,
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OPENSSL_version_minor, OPENSSL_version_patch, OPENSSL_version_pre_release,
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OPENSSL_version_build_metadata, OpenSSL_version, OPENSSL_VERSION_NUMBER,
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OpenSSL_version_num, OPENSSL_info
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- get OpenSSL version number and other information
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=head1 SYNOPSIS
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#include <openssl/opensslv.h>
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#define OPENSSL_VERSION_MAJOR x
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#define OPENSSL_VERSION_MINOR y
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#define OPENSSL_VERSION_PATCH z
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/* The definitions here are typical release values */
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#define OPENSSL_VERSION_PRE_RELEASE ""
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#define OPENSSL_VERSION_BUILD_METADATA ""
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#define OPENSSL_VERSION_TEXT "OpenSSL x.y.z xx XXX xxxx"
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#define OPENSSL_VERSION_PREREQ(maj,min)
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#include <openssl/crypto.h>
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unsigned int OPENSSL_version_major(void);
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unsigned int OPENSSL_version_minor(void);
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unsigned int OPENSSL_version_patch(void);
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const char *OPENSSL_version_pre_release(void);
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const char *OPENSSL_version_build_metadata(void);
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const char *OpenSSL_version(int t);
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const char *OPENSSL_info(int t);
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/* from openssl/opensslv.h */
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#define OPENSSL_VERSION_NUMBER 0xnnnnnnnnL
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/* from openssl/crypto.h */
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unsigned long OpenSSL_version_num();
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=head1 DESCRIPTION
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=head2 Macros
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The three macros B<OPENSSL_VERSION_MAJOR>, B<OPENSSL_VERSION_MINOR> and
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B<OPENSSL_VERSION_PATCH> represent the three parts of a version
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identifier, B<I<MAJOR>.I<MINOR>.I<PATCH>>.
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The macro B<OPENSSL_VERSION_PRE_RELEASE> is an added bit of text that
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indicates that this is a pre-release version, such as C<"-dev"> for an
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ongoing development snapshot or C<"-alpha3"> for an alpha release.
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The value must be a string.
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The macro B<OPENSSL_VERSION_BUILD_METADATA> is extra information, reserved
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for other parties, such as C<"+fips">, or C<"+vendor.1">).
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The OpenSSL project will not touch this macro (will leave it an empty string).
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The value must be a string.
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B<OPENSSL_VERSION_STR> is a convenience macro to get the short version
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identifier string, C<"I<MAJOR>.I<MINOR>.I<PATCH>">.
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B<OPENSSL_FULL_VERSION_STR> is a convenience macro to get the longer
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version identifier string, which combines B<OPENSSL_VERSION_STR>,
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B<OPENSSL_VERSION_PRE_RELEASE> and B<OPENSSL_VERSION_BUILD_METADATA>.
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B<OPENSSL_VERSION_TEXT> is a convenience macro to get a full descriptive
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version text, which includes B<OPENSSL_FULL_VERSION_STR> and the release
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date.
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B<OPENSSL_VERSION_PREREQ> is a useful macro for checking whether the OpenSSL
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version for the headers in use is at least at the given pre-requisite major
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(B<maj>) and minor (B<min>) number or not. It will evaluate to true if the
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header version number (B<OPENSSL_VERSION_MAJOR>.B<OPENSSL_VERSION_MINOR>) is
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greater than or equal to B<maj>.B<min>.
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B<OPENSSL_VERSION_NUMBER> is a combination of the major, minor and
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patch version into a single integer 0xMNN00PP0L, where:
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=over 4
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=item M
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is the number from B<OPENSSL_VERSION_MAJOR>, in hexadecimal notation
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=item NN
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is the number from B<OPENSSL_VERSION_MINOR>, in hexadecimal notation
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=item PP
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is the number from B<OPENSSL_VERSION_PATCH>, in hexadecimal notation
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=back
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=head2 Functions
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OPENSSL_version_major(), OPENSSL_version_minor(), OPENSSL_version_patch(),
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OPENSSL_version_pre_release(), and OPENSSL_version_build_metadata() return
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the values of the macros above for the build of the library, respectively.
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OpenSSL_version() returns different strings depending on I<t>:
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=over 4
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=item OPENSSL_VERSION
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The value of B<OPENSSL_VERSION_TEXT>
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=item OPENSSL_VERSION_STRING
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The value of B<OPENSSL_VERSION_STR>
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=item OPENSSL_FULL_VERSION_STRING
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The value of B<OPENSSL_FULL_VERSION_STR>
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=item OPENSSL_CFLAGS
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The compiler flags set for the compilation process in the form
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C<compiler: ...> if available, or C<compiler: information not available>
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otherwise.
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=item OPENSSL_BUILT_ON
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The date of the build process in the form C<built on: ...> if available
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or C<built on: date not available> otherwise.
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The date would not be available in a reproducible build, for example.
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=item OPENSSL_PLATFORM
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The "Configure" target of the library build in the form C<platform: ...>
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if available, or C<platform: information not available> otherwise.
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=item OPENSSL_DIR
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The B<OPENSSLDIR> setting of the library build in the form C<OPENSSLDIR: "...">
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if available, or C<OPENSSLDIR: N/A> otherwise.
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=item OPENSSL_ENGINES_DIR
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The B<ENGINESDIR> setting of the library build in the form C<ENGINESDIR: "...">
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if available, or C<ENGINESDIR: N/A> otherwise. This option is deprecated in
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OpenSSL 3.0.
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=item OPENSSL_MODULES_DIR
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The B<MODULESDIR> setting of the library build in the form C<MODULESDIR: "...">
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if available, or C<MODULESDIR: N/A> otherwise.
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=item OPENSSL_CPU_INFO
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The current OpenSSL cpu settings.
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This is the current setting of the cpu capability flags. It is usually
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automatically configured but may be set via an environment variable.
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The value has the same syntax as the environment variable.
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For x86 the string looks like C<CPUINFO: OPENSSL_ia32cap=0x123:0x456>
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or C<CPUINFO: N/A> if not available.
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=back
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For an unknown I<t>, the text C<not available> is returned.
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OPENSSL_info() also returns different strings depending on I<t>:
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=over 4
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=item OPENSSL_INFO_CONFIG_DIR
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The configured C<OPENSSLDIR>, which is the default location for
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OpenSSL configuration files.
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=item OPENSSL_INFO_ENGINES_DIR
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The configured C<ENGINESDIR>, which is the default location for
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OpenSSL engines.
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=item OPENSSL_INFO_MODULES_DIR
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The configured C<MODULESDIR>, which is the default location for
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dynamically loadable OpenSSL modules other than engines.
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=item OPENSSL_INFO_DSO_EXTENSION
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The configured dynamically loadable module extension.
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=item OPENSSL_INFO_DIR_FILENAME_SEPARATOR
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The separator between a directory specification and a filename.
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Note that on some operating systems, this is not the same as the
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separator between directory elements.
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=item OPENSSL_INFO_LIST_SEPARATOR
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The OpenSSL list separator.
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This is typically used in strings that are lists of items, such as the
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value of the environment variable C<$PATH> on Unix (where the
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separator is C<:>) or C<%PATH%> on Windows (where the separator is
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C<;>).
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=item OPENSSL_INFO_CPU_SETTINGS
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The current OpenSSL cpu settings.
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This is the current setting of the cpu capability flags. It is usually
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automatically configured but may be set via an environment variable.
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The value has the same syntax as the environment variable.
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For x86 the string looks like C<OPENSSL_ia32cap=0x123:0x456>.
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=back
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For an unknown I<t>, NULL is returned.
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OpenSSL_version_num() returns the value of B<OPENSSL_VERSION_NUMBER>.
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=head1 RETURN VALUES
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OPENSSL_version_major(), OPENSSL_version_minor() and OPENSSL_version_patch()
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return the version number parts as integers.
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OPENSSL_version_pre_release() and OPENSSL_version_build_metadata() return
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the values of B<OPENSSL_VERSION_PRE_RELEASE> and
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B<OPENSSL_VERSION_BUILD_METADATA> respectively as constant strings.
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For any of them that is undefined, the empty string is returned.
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OpenSSL_version() returns constant strings.
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=head1 SEE ALSO
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L<crypto(7)>
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=head1 HISTORY
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The macros and functions described here were added in OpenSSL 3.0,
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except for OPENSSL_VERSION_NUMBER and OpenSSL_version_num().
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=head1 COPYRIGHT
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Copyright 2018-2022 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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