641 lines
		
	
	
		
			24 KiB
		
	
	
	
		
			Perl
		
	
	
	
			
		
		
	
	
			641 lines
		
	
	
		
			24 KiB
		
	
	
	
		
			Perl
		
	
	
	
#
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# This is not a runnable script, it is a Perl module, a collection of variables, subroutines, etc.
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# To get help about exported variables and subroutines, execute the following command:
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#
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#     perldoc Uname.pm
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#
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# or see POD (Plain Old Documentation) embedded to the source...
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#
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#
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#//===----------------------------------------------------------------------===//
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#//
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#// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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#// See https://llvm.org/LICENSE.txt for license information.
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#// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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#//
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#//===----------------------------------------------------------------------===//
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#
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package Uname;
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use strict;
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use warnings;
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use warnings::register;
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use Exporter;
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use POSIX;
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use File::Glob ":glob";
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use Net::Domain qw{};
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# Following code does not work with Perl 5.6 on Linux* OS and Windows* OS:
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#
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#     use if $^O eq "darwin", tools => qw{};
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#
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# The workaround for Perl 5.6:
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#
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BEGIN {
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    if ( $^O eq "darwin" or $^O eq "linux" ) {
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	require tools;
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        import tools;
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    }; # if
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    if ( $^O eq "MSWin32" ) {
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        require Win32;
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    }; # if
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}; # BEGIN
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my $mswin = qr{\A(?:MSWin32|Windows_NT)\z};
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my @posix = qw{ kernel_name fqdn kernel_release kernel_version machine };
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    # Properties supported by POSIX::uname().
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my @linux =
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    qw{ processor hardware_platform operating_system };
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    # Properties reported by uname in Linux* OS.
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my @base = ( @posix, @linux );
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    # Base properties.
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my @aux =
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    (
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        qw{ host_name domain_name },
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        map( "operating_system_$_", qw{ name release codename description } )
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    );
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    # Auxiliary properties.
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my @all = ( @base, @aux );
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    # All the properties.
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my @meta = qw{ base_names all_names value };
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    # Meta functions.
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our $VERSION     = "0.07";
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our @ISA         = qw{ Exporter };
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our @EXPORT      = qw{};
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our @EXPORT_OK   = ( @all, @meta );
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our %EXPORT_TAGS =
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    (
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        base => [ @base ],
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        all  => [ @all  ],
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        meta => [ @meta ],
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    );
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my %values;
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    # Hash of values. Some values are strings, some may be references to code which should be
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    # evaluated to get real value. This trick is implemented because call to Net::Domain::hostfqdn()
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    # is relatively slow.
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# Get values from POSIX::uname().
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@values{ @posix } = POSIX::uname();
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# On some systems POSIX::uname() returns "short" node name (without domain name). To be consistent
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# on all systems, we will get node name from alternative source.
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if ( $^O =~ m/cygwin/i ) {
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    # Function from Net::Domain module works well, but on Cygwin it prints to
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    # stderr "domainname: not found". So we will use environment variables for now.
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    $values{ fqdn } = lc( $ENV{ COMPUTERNAME } . "." . $ENV{ USERDNSDOMAIN } );
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} else {
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    # On systems other than Cygwin, let us use Net::Domain::hostfqdn(), but do it only node name
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    # is really requested.
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    $values{ fqdn } =
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        sub {
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            my $fqdn = Net::Domain::hostfqdn(); # "fqdn" stands for "fully qualified domain name".
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            # On some systems POSIX::uname() and Net::Domain::hostfqdn() reports different names.
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            # Let us issue a warning if they significantly different. Names are insignificantly
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            # different if POSIX::uname() matches the beginning of Net::Domain::hostfqdn().
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            if (
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                $fqdn eq substr( $fqdn, 0, length( $fqdn ) )
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                &&
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                (
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                    length( $fqdn ) == length( $fqdn )
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                    ||
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                    substr( $fqdn, length( $fqdn ), 1 ) eq "."
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                )
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            ) {
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                # Ok.
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            } else {
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                warnings::warnif(
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                    "POSIX::uname() and Net::Domain::hostfqdn() reported different names: " .
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                        "\"$values{ fqdn }\" and \"$fqdn\" respectively\n"
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                );
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            }; # if
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            return $fqdn;
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        }; # sub
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}; # if
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if ( $^O =~ $mswin ) {
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    if (
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        $values{ machine } =~ m{\A(?:x86|[56]86)\z}
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        and
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        exists( $ENV{ PROCESSOR_ARCHITECTURE } ) and $ENV{ PROCESSOR_ARCHITECTURE } eq "x86"
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        and
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        exists( $ENV{ PROCESSOR_ARCHITEW6432 } )
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    ) {
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        if ( $ENV{ PROCESSOR_ARCHITEW6432 } eq "AMD64" ) {
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            $values{ machine } = "x86_64";
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        }; # if
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    }; # if
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}; # if
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# Some values are not returned by POSIX::uname(), let us compute them.
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# processor.
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$values{ processor } = $values{ machine };
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# hardware_platform.
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if ( 0 ) {
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} elsif ( $^O eq "linux" or $^O eq "freebsd" or $^O eq "netbsd" ) {
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    if ( 0 ) {
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    } elsif ( $values{ machine } =~ m{\Ai[3456]86\z} ) {
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        $values{ hardware_platform } = "i386";
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    } elsif ( $values{ machine } =~ m{\A(x86_64|amd64)\z} ) {
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        $values{ hardware_platform } = "x86_64";
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    } elsif ( $values{ machine } =~ m{\Aarmv7\D*\z} ) {
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        $values{ hardware_platform } = "arm";
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    } elsif ( $values{ machine } =~ m{\Appc64le\z} ) {
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        $values{ hardware_platform } = "ppc64le";
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    } elsif ( $values{ machine } =~ m{\Appc64\z} ) {
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        $values{ hardware_platform } = "ppc64";
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    } elsif ( $values{ machine } =~ m{\Aaarch64\z} ) {
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        $values{ hardware_platform } = "aarch64";
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    } elsif ( $values{ machine } =~ m{\Amips64\z} ) {
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        $values{ hardware_platform } = "mips64";
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    } elsif ( $values{ machine } =~ m{\Amips\z} ) {
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        $values{ hardware_platform } = "mips";
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    } elsif ( $values{ machine } =~ m{\Ariscv64\z} ) {
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        $values{ hardware_platform } = "riscv64";
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    } else {
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        die "Unsupported machine (\"$values{ machine }\") returned by POSIX::uname(); stopped";
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    }; # if
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} elsif ( $^O eq "darwin" ) {
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    if ( 0 ) {
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    } elsif ( $values{ machine } eq "x86" or $values{ machine } eq "i386" ) {
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        $values{ hardware_platform } =
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            sub {
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                my $platform = "i386";
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                # Some OSes on Intel(R) 64 still reports "i386" machine. Verify it by using
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                # the value returned by 'sysctl -n hw.optional.x86_64'. On Intel(R) 64-bit systems the
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                # value == 1; on 32-bit systems the 'hw.optional.x86_64' property either does not exist
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                # or the value == 0. The path variable does not contain a path to sysctl when
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                # started by crontab.
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                my $sysctl = ( which( "sysctl" ) or "/usr/sbin/sysctl" );
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                my $output;
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                debug( "Executing $sysctl..." );
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                execute( [ $sysctl, "-n", "hw.optional.x86_64" ], -stdout => \$output, -stderr => undef );
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                chomp( $output );
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                if ( 0 ) {
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                } elsif ( "$output" eq "" or "$output" eq "0" ) {
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                    $platform = "i386";
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                } elsif ( "$output" eq "1" ) {
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                    $platform = "x86_64";
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                } else {
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                    die "Unsupported value (\"$output\") returned by \"$sysctl -n hw.optional.x86_64\"; stopped";
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                }; # if
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                return $platform;
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            }; # sub {
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    } elsif ( $values{ machine } eq "x86_64" ) {
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	# Some OS X* versions report "x86_64".
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	$values{ hardware_platform } = "x86_64";
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    } else {
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        die "Unsupported machine (\"$values{ machine }\") returned by POSIX::uname(); stopped";
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    }; # if
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} elsif ( $^O =~ $mswin ) {
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    if ( 0 ) {
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    } elsif ( $values{ machine } =~ m{\A(?:x86|[56]86)\z} ) {
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        $values{ hardware_platform } = "i386";
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    } elsif ( $values{ machine } eq "x86_64" or $values{ machine } eq "amd64" ) {
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        # ActivePerl for IA-32 architecture returns "x86_64", while ActivePerl for Intel(R) 64 returns "amd64".
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        $values{ hardware_platform } = "x86_64";
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    } else {
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        die "Unsupported machine (\"$values{ machine }\") returned by POSIX::uname(); stopped";
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    }; # if
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} elsif ( $^O eq "cygwin" ) {
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    if ( 0 ) {
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    } elsif ( $values{ machine } =~ m{\Ai[3456]86\z} ) {
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        $values{ hardware_platform } = "i386";
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    } elsif ( $values{ machine } eq "x86_64" ) {
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        $values{ hardware_platform } = "x86_64";
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    } else {
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        die "Unsupported machine (\"$values{ machine }\") returned by POSIX::uname(); stopped";
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    }; # if
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} else {
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    die "Unsupported OS (\"$^O\"); stopped";
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}; # if
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# operating_system.
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if ( 0 ) {
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} elsif ( $values{ kernel_name } eq "Linux" ) {
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    $values{ operating_system } = "GNU/Linux";
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    my $release;    # Name of chosen "*-release" file.
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    my $bulk;       # Content of release file.
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    # On Ubuntu, lsb-release is quite informative, e. g.:
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    #     DISTRIB_ID=Ubuntu
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    #     DISTRIB_RELEASE=9.04
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    #     DISTRIB_CODENAME=jaunty
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    #     DISTRIB_DESCRIPTION="Ubuntu 9.04"
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    # Try lsb-release first. But on some older systems lsb-release is not informative.
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    # It may contain just one line:
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    #     LSB_VERSION="1.3"
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    $release = "/etc/lsb-release";
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    if ( -e $release ) {
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        $bulk = read_file( $release );
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    } else {
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        $bulk = "";
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    }; # if
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    if ( $bulk =~ m{^DISTRIB_} ) {
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        # Ok, this lsb-release is informative.
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        $bulk =~ m{^DISTRIB_ID\s*=\s*(.*?)\s*$}m
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            or runtime_error( "$release: There is no DISTRIB_ID:", $bulk, "(eof)" );
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        $values{ operating_system_name } = $1;
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        $bulk =~ m{^DISTRIB_RELEASE\s*=\s*(.*?)\s*$}m
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            or runtime_error( "$release: There is no DISTRIB_RELEASE:", $bulk, "(eof)" );
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        $values{ operating_system_release } = $1;
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        $bulk =~ m{^DISTRIB_CODENAME\s*=\s*(.*?)\s*$}m
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            or runtime_error( "$release: There is no DISTRIB_CODENAME:", $bulk, "(eof)" );
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        $values{ operating_system_codename } = $1;
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        $bulk =~ m{^DISTRIB_DESCRIPTION\s*="?\s*(.*?)"?\s*$}m
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            or runtime_error( "$release: There is no DISTRIB_DESCRIPTION:", $bulk, "(eof)" );
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        $values{ operating_system_description } = $1;
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    } else {
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        # Oops. lsb-release is missed or not informative. Try other *-release files.
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        $release = "/etc/system-release";
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        if ( not -e $release ) {    # Use /etc/system-release" if such file exists.
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            # Otherwise try other "/etc/*-release" files, but ignore "/etc/lsb-release".
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            my @releases = grep( $_ ne "/etc/lsb-release", bsd_glob( "/etc/*-release" ) );
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            # On some Fedora systems there are two files: fedora-release and redhat-release
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            # with identical content. If fedora-release present, ignore redjat-release.
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            if ( grep( $_ eq "/etc/fedora-release", @releases ) ) {
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                @releases = grep( $_ ne "/etc/redhat-release", @releases );
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            }; # if
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            if ( @releases == 1 ) {
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                $release = $releases[ 0 ];
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            } else {
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                if ( @releases == 0 ) {
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                    # No *-release files found, try debian_version.
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                    $release = "/etc/debian_version";
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                    if ( not -e $release ) {
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                        $release = undef;
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                        warning( "No release files found in \"/etc/\" directory." );
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                    }; # if
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                } else {
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                    $release = undef;
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                    warning( "More than one release files found in \"/etc/\" directory:", @releases );
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                }; # if
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            }; # if
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        }; # if
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        if ( defined( $release ) ) {
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            $bulk = read_file( $release );
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            if ( $release =~ m{system|redhat|fedora} ) {
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                # Red Hat or Fedora. Parse the first line of file.
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                # Typical values of *-release (one of):
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                #     Red Hat Enterprise Linux* OS Server release 5.2 (Tikanga)
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                #     Red Hat Enterprise Linux* OS AS release 3 (Taroon Update 4)
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                #     Fedora release 10 (Cambridge)
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                $bulk =~ m{\A(.*)$}m
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                    or runtime_error( "$release: Cannot find the first line:", $bulk, "(eof)" );
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                my $first_line = $1;
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                $values{ operating_system_description } = $first_line;
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                $first_line =~ m{\A(.*?)\s+release\s+(.*?)(?:\s+\((.*?)(?:\s+Update\s+(.*?))?\))?\s*$}
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                    or runtime_error( "$release:1: Cannot parse line:", $first_line );
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                $values{ operating_system_name    }  = $1;
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                $values{ operating_system_release }  = $2 . ( defined( $4 ) ? ".$4" : "" );
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                $values{ operating_system_codename } = $3;
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            } elsif ( $release =~ m{SuSE} ) {
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                # Typical SuSE-release:
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                #     SUSE Linux* OS Enterprise Server 10 (x86_64)
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                #     VERSION = 10
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                #     PATCHLEVEL = 2
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                $bulk =~ m{\A(.*)$}m
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                    or runtime_error( "$release: Cannot find the first line:", $bulk, "(eof)" );
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                my $first_line = $1;
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                $values{ operating_system_description } = $first_line;
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                $first_line =~ m{^(.*?)\s*(\d+)\s*\(.*?\)\s*$}
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                    or runtime_error( "$release:1: Cannot parse line:", $first_line );
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                $values{ operating_system_name } = $1;
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                $bulk =~ m{^VERSION\s*=\s*(.*)\s*$}m
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                    or runtime_error( "$release: There is no VERSION:", $bulk, "(eof)" );
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                $values{ operating_system_release } = $1;
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                if ( $bulk =~ m{^PATCHLEVEL\s*=\s*(.*)\s*$}m ) {
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                    $values{ operating_system_release } .= ".$1";
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                }; # if
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            } elsif ( $release =~ m{debian_version} ) {
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                # Debian. The file debian_version contains just version number, nothing more:
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                #     4.0
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                my $name = "Debian";
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                $bulk =~ m{\A(.*)$}m
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                    or runtime_error( "$release: Cannot find the first line:", $bulk, "(eof)" );
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                my $version = $1;
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                $values{ operating_system_name        } = $name;
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                $values{ operating_system_release     } = $version;
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                $values{ operating_system_codename    } = "unknown";
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                $values{ operating_system_description } = sprintf( "%s %s", $name, $version );
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            }; # if
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        }; # if
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    }; # if
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    if ( not defined( $values{ operating_system_name } ) ) {
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        $values{ operating_system_name } = "GNU/Linux";
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    }; # if
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} elsif ( $values{ kernel_name } eq "Darwin" ) {
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    my %codenames = (
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        10.4 => "Tiger",
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        10.5 => "Leopard",
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        10.6 => "Snow Leopard",
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    );
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   my $darwin;
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   my $get_os_info =
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       sub {
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           my ( $name ) = @_;
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						|
           if ( not defined $darwin ) {
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               $darwin->{ operating_system } = "Darwin";
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               # sw_vers prints OS X* version to stdout:
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               #     ProductName:       OS X*
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               #     ProductVersion:    10.4.11
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               #     BuildVersion:      8S2167
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               # It does not print codename, so we code OS X* codenames here.
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               my $sw_vers = which( "sw_vers" ) || "/usr/bin/sw_vers";
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               my $output;
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               debug( "Executing $sw_vers..." );
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               execute( [ $sw_vers ], -stdout => \$output, -stderr => undef );
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               $output =~ m{^ProductName:\s*(.*)\s*$}m
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                   or runtime_error( "There is no ProductName in sw_vers output:", $output, "(eof)" );
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               my $name = $1;
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               $output =~ m{^ProductVersion:\s*(.*)\s*$}m
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                   or runtime_error( "There is no ProductVersion in sw_vers output:", $output, "(eof)" );
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               my $release = $1;
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               # Sometimes release reported as "10.4.11" (3 components), sometimes as "10.6".
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               # Handle both variants.
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               $release =~ m{^(\d+.\d+)(?:\.\d+)?(?=\s|$)}
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                   or runtime_error( "Cannot parse OS X* version: $release" );
 | 
						|
               my $version = $1;
 | 
						|
               my $codename = ( $codenames{ $version } or "unknown" );
 | 
						|
               $darwin->{ operating_system_name        } = $name;
 | 
						|
               $darwin->{ operating_system_release     } = $release;
 | 
						|
               $darwin->{ operating_system_codename    } = $codename;
 | 
						|
               $darwin->{ operating_system_description } = sprintf( "%s %s (%s)", $name, $release, $codename );
 | 
						|
           }; # if
 | 
						|
           return $darwin->{ $name };
 | 
						|
       }; # sub
 | 
						|
    $values{ operating_system             } = sub { $get_os_info->( "operating_system"             ); };
 | 
						|
    $values{ operating_system_name        } = sub { $get_os_info->( "operating_system_name"        ); };
 | 
						|
    $values{ operating_system_release     } = sub { $get_os_info->( "operating_system_release"     ); };
 | 
						|
    $values{ operating_system_codename    } = sub { $get_os_info->( "operating_system_codename"    ); };
 | 
						|
    $values{ operating_system_description } = sub { $get_os_info->( "operating_system_description" ); };
 | 
						|
} elsif ( $values{ kernel_name } =~ m{\AWindows[ _]NT\z} ) {
 | 
						|
    $values{ operating_system } = "MS Windows";
 | 
						|
    # my @os_name = Win32::GetOSName();
 | 
						|
    # $values{ operating_system_release } = $os_name[ 0 ];
 | 
						|
    # $values{ operating_system_update  } = $os_name[ 1 ];
 | 
						|
} elsif ( $values{ kernel_name } =~ m{\ACYGWIN_NT-} ) {
 | 
						|
    $values{ operating_system } = "MS Windows";
 | 
						|
} elsif ( $values{ kernel_name } =~ m{\AFreeBSD} ) {
 | 
						|
    $values{ operating_system } = "FreeBSD";
 | 
						|
} elsif ( $values{ kernel_name } =~ m{\ANetBSD} ) {
 | 
						|
    $values{ operating_system } = "NetBSD";
 | 
						|
} else {
 | 
						|
    die "Unsupported kernel_name (\"$values{ kernel_name }\") returned by POSIX::uname(); stopped";
 | 
						|
}; # if
 | 
						|
 | 
						|
# host_name and domain_name
 | 
						|
$values{ host_name } =
 | 
						|
    sub {
 | 
						|
        my $fqdn = value( "fqdn" );
 | 
						|
        $fqdn =~ m{\A([^.]*)(?:\.(.*))?\z};
 | 
						|
        my $host_name = $1;
 | 
						|
        if ( not defined( $host_name ) or $host_name eq "" ) {
 | 
						|
            die "Unexpected error: undefined or empty host name; stopped";
 | 
						|
        }; # if
 | 
						|
        return $host_name;
 | 
						|
    };
 | 
						|
$values{ domain_name } =
 | 
						|
    sub {
 | 
						|
        my $fqdn = value( "fqdn" );
 | 
						|
        $fqdn =~ m{\A([^.]*)(?:\.(.*))?\z};
 | 
						|
        my $domain_name = $2;
 | 
						|
        if ( not defined( $domain_name ) or $domain_name eq "" ) {
 | 
						|
            die "Unexpected error: undefined or empty domain name; stopped";
 | 
						|
        }; # if
 | 
						|
        return $domain_name;
 | 
						|
    };
 | 
						|
 | 
						|
# Replace undefined values with "unknown".
 | 
						|
foreach my $name ( @all ) {
 | 
						|
    if ( not defined( $values{ $name } ) ) {
 | 
						|
        $values{ $name } = "unknown";
 | 
						|
    }; # if
 | 
						|
}; # foreach $name
 | 
						|
 | 
						|
# Export functions reporting properties.
 | 
						|
foreach my $name ( @all ) {
 | 
						|
    no strict "refs";
 | 
						|
    *$name = sub { return value( $name ); };
 | 
						|
}; # foreach $name
 | 
						|
 | 
						|
# This function returns base names.
 | 
						|
sub base_names {
 | 
						|
    return @base;
 | 
						|
}; # sub base_names
 | 
						|
 | 
						|
# This function returns all the names.
 | 
						|
sub all_names {
 | 
						|
    return @all;
 | 
						|
}; # sub all_names
 | 
						|
 | 
						|
# This function returns value by the specified name.
 | 
						|
sub value($) {
 | 
						|
    my $name = shift( @_ );
 | 
						|
    if ( ref( $values{ $name } ) ) {
 | 
						|
        my $value = $values{ $name }->();
 | 
						|
        $values{ $name } = $value;
 | 
						|
    }; # if
 | 
						|
    return $values{ $name };
 | 
						|
}; # sub value
 | 
						|
 | 
						|
return 1;
 | 
						|
 | 
						|
__END__
 | 
						|
 | 
						|
=pod
 | 
						|
 | 
						|
=head1 NAME
 | 
						|
 | 
						|
B<Uname.pm> -- A few subroutines to get system information usually provided by
 | 
						|
C</bin/uname> and C<POSIX::uname()>.
 | 
						|
 | 
						|
=head1 SYNOPSIS
 | 
						|
 | 
						|
    use Uname;
 | 
						|
 | 
						|
    # Base property functions.
 | 
						|
    $kernel_name       = Uname::kernel_name();
 | 
						|
    $fqdn              = Uname::fqdn();
 | 
						|
    $kernel_release    = Uname::kernel_release();
 | 
						|
    $kernel_version    = Uname::kernel_version();
 | 
						|
    $machine           = Uname::machine();
 | 
						|
    $processor         = Uname::processor();
 | 
						|
    $hardware_platform = Uname::hardware_platform();
 | 
						|
    $operating_system  = Uname::operating_system();
 | 
						|
 | 
						|
    # Auxiliary property functions.
 | 
						|
    $host_name         = Uname::host_name();
 | 
						|
    $domain_name       = Uname::domain_name();
 | 
						|
    $os_name           = Uname::operating_system_name();
 | 
						|
    $os_release        = Uname::operating_system_release();
 | 
						|
    $os_codename       = Uname::operating_system_codename();
 | 
						|
    $os_description    = Uname::operating_system_description();
 | 
						|
 | 
						|
    # Meta functions.
 | 
						|
    @base_names  = Uname::base_names();
 | 
						|
    @all_names   = Uname::all_names();
 | 
						|
    $kernel_name = Uname::value( "kernel_name" );
 | 
						|
 | 
						|
=head1 DESCRIPTION
 | 
						|
 | 
						|
B<Uname.pm> resembles functionality found in C<POSIX::uname()> function or in C<uname> program.
 | 
						|
However, both C<POSIX::uname()> and C</bin/uname> have some disadvantages:
 | 
						|
 | 
						|
=over
 | 
						|
 | 
						|
=item *
 | 
						|
 | 
						|
C<uname> may be not available in some environments, for example, in Windows* OS
 | 
						|
(C<uname> may be found in some third-party software packages, like MKS Toolkit or Cygwin, but it is
 | 
						|
not a part of OS).
 | 
						|
 | 
						|
=item *
 | 
						|
 | 
						|
There are many different versions of C<uname>. For example, C<uname> on OS X* does not
 | 
						|
recognize options C<-i>, C<-o>, and any long options.
 | 
						|
 | 
						|
=item *
 | 
						|
 | 
						|
Different versions of C<uname> may report the same property differently. For example,
 | 
						|
C<uname> on Linux* OS reports machine as C<i686>, while C<uname> on OS X* reports the same machine as
 | 
						|
C<x86>.
 | 
						|
 | 
						|
=item *
 | 
						|
 | 
						|
C<POSIX::uname()> returns list of values. I cannot recall what is the fourth element of the list.
 | 
						|
 | 
						|
=back
 | 
						|
 | 
						|
=head2 Base Functions
 | 
						|
 | 
						|
Base property functions provide the information as C<uname> program.
 | 
						|
 | 
						|
=over
 | 
						|
 | 
						|
=item B<kernel_name()>
 | 
						|
 | 
						|
Returns the kernel name, as reported by C<POSIX::uname()>.
 | 
						|
 | 
						|
=item B<fqdn()>
 | 
						|
 | 
						|
Returns the FQDN, fully qualified domain name. On some systems C<POSIX::uname()> reports short node
 | 
						|
name (with no domain name), on others C<POSIX::uname()> reports full node name. This
 | 
						|
function strive to return FQDN always (by refining C<POSIX::uname()> with
 | 
						|
C<Net::Domain::hostfqdn()>).
 | 
						|
 | 
						|
=item B<kernel_release()>
 | 
						|
 | 
						|
Returns the kernel release string, as reported by C<POSIX::uname()>. Usually the string consists of
 | 
						|
several numbers, separated by dots and dashes, but may also include some non-numeric substrings like
 | 
						|
"smp".
 | 
						|
 | 
						|
=item B<kernel_version()>
 | 
						|
 | 
						|
Returns the kernel version string, as reported by C<POSIX::uname()>. It is B<not> several
 | 
						|
dot-separated numbers but much longer string describing the kernel.
 | 
						|
For example, on Linux* OS it includes build date.
 | 
						|
If you look for something identifying the kernel, look at L<kernel_release>.
 | 
						|
 | 
						|
=item B<machine()>
 | 
						|
 | 
						|
Returns the machine hardware name, as reported by POSIX::uname(). Not reliable. Different OSes may
 | 
						|
report the same machine hardware name differently. For example, Linux* OS reports C<i686>, while OS X*
 | 
						|
reports C<x86> on the same machine.
 | 
						|
 | 
						|
=item B<processor()>
 | 
						|
 | 
						|
Returns the processor type. Not reliable. Usually the same as C<machine>.
 | 
						|
 | 
						|
=item B<hardware_platform()>
 | 
						|
 | 
						|
One of: C<i386> or C<x86_64>.
 | 
						|
 | 
						|
=item B<operating_system()>
 | 
						|
 | 
						|
One of: C<GNU/Linux>, C<OS X*>, or C<MS Windows>.
 | 
						|
 | 
						|
=back
 | 
						|
 | 
						|
=head2 Auxiliary Functions
 | 
						|
 | 
						|
Auxiliary functions extends base functions with information not reported by C<uname> program.
 | 
						|
 | 
						|
Auxiliary functions collect information from different sources. For example, on OS X*, they may
 | 
						|
call C<sw_vers> program to find out OS release; on Linux* OS they may parse C</etc/redhat-release> file,
 | 
						|
etc.
 | 
						|
 | 
						|
=over
 | 
						|
 | 
						|
=item B<host_name()>
 | 
						|
 | 
						|
Returns host name (FQDN with dropped domain part).
 | 
						|
 | 
						|
=item B<domain_name()>
 | 
						|
 | 
						|
Returns domain name (FQDN with dropped host part).
 | 
						|
 | 
						|
=item B<operating_system_name>
 | 
						|
 | 
						|
Name of operating system or name of Linux* OS distribution, like "Fedora" or
 | 
						|
"Red Hat Enterprise Linux* OS Server".
 | 
						|
 | 
						|
=item B<operating_system_release>
 | 
						|
 | 
						|
Release (version) of operating system or Linux* OS distribution. Usually it is a series of
 | 
						|
dot-separated numbers.
 | 
						|
 | 
						|
=item B<operating_system_codename>
 | 
						|
 | 
						|
Codename of operating system release or Linux* OS distribution. For example, Fedora 10 is "Cambridge"
 | 
						|
while OS X* 10.4 is "Tiger".
 | 
						|
 | 
						|
=item B<operating_system_description>
 | 
						|
 | 
						|
Longer string. Usually it includes all the operating system properting mentioned above -- name,
 | 
						|
release, codename in parentheses.
 | 
						|
 | 
						|
=back
 | 
						|
 | 
						|
=head2 Meta Functions
 | 
						|
 | 
						|
=over
 | 
						|
 | 
						|
=item B<base_names()>
 | 
						|
 | 
						|
This function returns the list of base property names.
 | 
						|
 | 
						|
=item B<all_names()>
 | 
						|
 | 
						|
This function returns the list of all property names.
 | 
						|
 | 
						|
=item B<value(> I<name> B<)>
 | 
						|
 | 
						|
This function returns the value of the property specified by I<name>.
 | 
						|
 | 
						|
=back
 | 
						|
 | 
						|
=head1 EXAMPLES
 | 
						|
 | 
						|
    use Uname;
 | 
						|
 | 
						|
    print( Uname::string(), "\n" );
 | 
						|
 | 
						|
    foreach my $name ( Uname::all_names() ) {
 | 
						|
        print( "$name=\"" . Uname::value( $name ) . "\"\n" );
 | 
						|
    }; # foreach $name
 | 
						|
 | 
						|
=head1 SEE ALSO
 | 
						|
 | 
						|
L<POSIX::uname>, L<uname>.
 | 
						|
 | 
						|
=cut
 | 
						|
 | 
						|
# end of file #
 | 
						|
 |