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| Current File : //opt/fastcomet/nightwatch/Fastcomet/Linux/Distribution.pm |
package Fastcomet::Linux::Distribution;
use 5.006000;
use strict;
use warnings;
require Exporter;
our @ISA = qw(Exporter);
our @EXPORT_OK = qw( distribution_name distribution_version );
our $VERSION = '0.23';
our $release_files_directory='/etc';
our $standard_release_file = 'lsb-release';
our %release_files = (
'gentoo-release' => 'gentoo',
'fedora-release' => 'fedora',
'centos-release' => 'centos',
'enterprise-release' => 'oracle enterprise linux',
'turbolinux-release' => 'turbolinux',
'mandrake-release' => 'mandrake',
'mandrakelinux-release' => 'mandrakelinux',
'debian_version' => 'debian',
'debian_release' => 'debian',
'SuSE-release' => 'suse',
'knoppix-version' => 'knoppix',
'yellowdog-release' => 'yellowdog',
'slackware-version' => 'slackware',
'slackware-release' => 'slackware',
'redflag-release' => 'redflag',
'redhat-release' => 'redhat',
'redhat_version' => 'redhat',
'conectiva-release' => 'conectiva',
'immunix-release' => 'immunix',
'tinysofa-release' => 'tinysofa',
'trustix-release' => 'trustix',
'adamantix_version' => 'adamantix',
'yoper-release' => 'yoper',
'arch-release' => 'arch',
'libranet_version' => 'libranet',
'va-release' => 'va-linux',
'pardus-release' => 'pardus',
'system-release' => 'amazon',
'CloudLinux-release' => 'CloudLinux',
);
our %version_match = (
'gentoo' => 'Gentoo Base System release (.*)',
'debian' => '(.+)',
'suse' => 'VERSION = (.*)',
'fedora' => 'Fedora(?: Core)? release (\d+) \(',
'redflag' => 'Red Flag (?:Desktop|Linux) (?:release |\()(.*?)(?: \(.+)?\)',
'redhat' => 'Red Hat(?: Enterprise)? Linux(?: Server)? release (.*) \(',
'oracle enterprise linux' => 'Enterprise Linux Server release (.+) \(',
'slackware' => '^Slackware (.+)$',
'pardus' => '^Pardus (.+)$',
'centos' => '^CentOS(?: Linux)? release (.+) \(',
'scientific' => '^Scientific Linux release (.+) \(',
'amazon' => 'Amazon Linux AMI release (.+)$',
'CloudLinux' => 'CloudLinux Server release (\S+)'
);
if ($^O ne 'linux') {
# require Carp;
# Carp::croak('you are trying to use a linux specific module on a different OS');
}
sub new {
my %self = (
'DISTRIB_ID' => '',
'DISTRIB_RELEASE' => '',
'DISTRIB_CODENAME' => '',
'DISTRIB_DESCRIPTION' => '',
'release_file' => '',
'pattern' => ''
);
return bless \%self;
}
sub distribution_name {
my $self = shift || new();
my $distro;
if ($distro = $self->_get_lsb_info()){
return $distro if ($distro);
}
foreach (qw(enterprise-release fedora-release CloudLinux-release)) {
if (-f "$release_files_directory/$_" && !-l "$release_files_directory/$_"){
if (-f "$release_files_directory/$_" && !-l "$release_files_directory/$_"){
$self->{'DISTRIB_ID'} = $release_files{$_};
$self->{'release_file'} = $_;
return $self->{'DISTRIB_ID'};
}
}
}
foreach (keys %release_files) {
if (-f "$release_files_directory/$_" && !-l "$release_files_directory/$_"){
if (-f "$release_files_directory/$_" && !-l "$release_files_directory/$_"){
if ( $release_files{$_} eq 'redhat' ) {
foreach my $rhel_deriv ('centos','scientific',) {
$self->{'pattern'} = $version_match{$rhel_deriv};
$self->{'release_file'}='redhat-release';
if ( $self->_get_file_info() ) {
$self->{'DISTRIB_ID'} = $rhel_deriv;
$self->{'release_file'} = $_;
return $self->{'DISTRIB_ID'};
}
}
$self->{'pattern'}='';
}
$self->{'release_file'} = $_;
$self->{'DISTRIB_ID'} = $release_files{$_};
return $self->{'DISTRIB_ID'};
}
}
}
undef
}
sub distribution_version {
my $self = shift || new();
my $release;
return $release if ($release = $self->_get_lsb_info('DISTRIB_RELEASE'));
if (! $self->{'DISTRIB_ID'}){
$self->distribution_name() or die 'No version because no distro.';
}
$self->{'pattern'} = $version_match{$self->{'DISTRIB_ID'}};
$release = $self->_get_file_info();
$self->{'DISTRIB_RELEASE'} = $release;
return $release;
}
sub _get_lsb_info {
my $self = shift;
my $field = shift || 'DISTRIB_ID';
my $tmp = $self->{'release_file'};
if ( -r "$release_files_directory/" . $standard_release_file ) {
$self->{'release_file'} = $standard_release_file;
$self->{'pattern'} = $field . '=["]?([^"]+)["]?';
my $info = $self->_get_file_info();
if ($info){
$self->{$field} = $info;
return $info
}
}
$self->{'release_file'} = $tmp;
$self->{'pattern'} = '';
undef;
}
sub _get_file_info {
my $self = shift;
open my $fh, '<', "$release_files_directory/" . $self->{'release_file'} or die 'Cannot open file: '.$release_files_directory.'/' . $self->{'release_file'};
my $info = '';
local $_;
while (<$fh>){
chomp $_;
($info) = $_ =~ m/$self->{'pattern'}/;
return "\L$info" if $info;
}
undef;
}
1;
__END__
=head1 NAME
Fastcomet::Linux::Distribution - Perl extension to detect on which Linux distribution we are running.
=head1 SYNOPSIS
use Fastcomet::Linux::Distribution qw(distribution_name distribution_version);
if(my $distro = distribution_name) {
my $version = distribution_version();
print "you are running $distro, version $version\n";
} else {
print "distribution unknown\n";
}
Or else do it OO:
use Fastcomet::Linux::Distribution qw(distribution_name distribution_version);
my $linux = Fastcomet::Linux::Distribution->new;
if(my $distro = $linux->distribution_name()) {
my $version = $linux->distribution_version();
print "you are running $distro, version $version\n";
} else {
print "distribution unknown\n";
}
=head1 DESCRIPTION
This is a simple module that tries to guess on what linux distribution we are running by looking for release's files in /etc. It now looks for 'lsb-release' first as that should be the most correct and adds ubuntu support. Secondly, it will look for the distro specific files.
It currently recognizes slackware, debian, suse, fedora, redhat, turbolinux, yellowdog, knoppix, mandrake, conectiva, immunix, tinysofa, va-linux, trustix, adamantix, yoper, arch-linux, libranet, gentoo, ubuntu, scientific, oracle enterprise linux, amazon linux and redflag.
It has function to get the version for debian, suse, fedora, redhat, gentoo, slackware, scientific, oracle enterprise linux, amazon linux, redflag and ubuntu(lsb). People running unsupported distro's are greatly encouraged to submit patches :-)
=head2 EXPORT
None by default.
=head1 TODO
Add the capability of recognize the version of the distribution for all recognized distributions.
=head1 AUTHORS
Alexandr Ciornii E<lt>alexchorny@gmail.comE<gt>, L<http://chorny.net>
Alberto Re, E<lt>alberto@accidia.netE<gt>
Judith Lebzelter, E<lt>judith@osdl.orgE<gt>
=head1 COPYRIGHT AND LICENSE
This library is free software; you can redistribute it and/or modify
it under the same terms as Perl itself, either Perl version 5.8.5 or,
at your option, any later version of Perl 5 you may have available.
=cut