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File Name : DMIDecode.pm

############################################################
#
#   $Id: DMIDecode.pm 1004 2007-03-11 12:43:25Z nicolaw $
#   Parse::DMIDecode - Interface to SMBIOS using dmidecode
#
#   Copyright 2006,2007 Nicola Worthington
#
#   Licensed under the Apache License, Version 2.0 (the "License");
#   you may not use this file except in compliance with the License.
#   You may obtain a copy of the License at
#
#       http://www.apache.org/licenses/LICENSE-2.0
#
#   Unless required by applicable law or agreed to in writing, software
#   distributed under the License is distributed on an "AS IS" BASIS,
#   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
#   See the License for the specific language governing permissions and
#   limitations under the License.
#
############################################################

package Parse::DMIDecode;
# vim:ts=4:sw=4:tw=78

use strict;
#use Scalar::Util qw(refaddr);
use Parse::DMIDecode::Handle;
use Parse::DMIDecode::Constants qw(@TYPES %GROUPS);
use Carp qw(croak cluck carp);
use vars qw($VERSION $DEBUG);

$VERSION = '0.03' || sprintf('%d', q$Revision: 1004 $ =~ /(\d+)/g);
$DEBUG ||= $ENV{DEBUG} ? 1 : 0;

my $objstore = {};

#
# Methods
#

sub new {
	ref(my $class = shift) && croak 'Class name required';
	croak 'Odd number of elements passed when even was expected' if @_ % 2;

my $self = bless \(my $dummy), $class;
	$objstore->{_refaddr($self)} = {@_};
	my $stor = $objstore->{_refaddr($self)};

$stor->{commands} = [qw(dmidecode)];
	my $validkeys = join('|','nowarnings',@{$stor->{commands}});
	my @invalidkeys = grep(!/^$validkeys$/,grep($_ ne 'commands',keys %{$stor}));
	delete $stor->{$_} for @invalidkeys;
	cluck('Unrecognised parameters passed: '.join(', ',@invalidkeys))
		if @invalidkeys && $^W;

for my $command (@{$stor->{commands}}) {
		croak "Command $command '$stor->{$command}'; file not found"
			if defined $stor->{$command} && !-f $stor->{$command};
	}

DUMP('$self',$self);
	DUMP('$stor',$stor);
	return $self;
}

sub probe {
	my $self = shift;
	croak 'Not called as a method by parent object'
		unless ref $self && UNIVERSAL::isa($self, __PACKAGE__);

my $stor = $objstore->{_refaddr($self)};
	eval {
		if (!defined $stor->{dmidecode}) {
			require File::Which;
			for my $command (@{$stor->{commands}}) {
				$stor->{$command} = File::Which::which($command)
					if !defined $stor->{$command};
			}
		}
	};
	croak $@ if $@;

my ($cmd) = $stor->{dmidecode} =~ /^([\/\.\_\-a-zA-Z0-9 ]+)$/;
	TRACE($cmd);
	croak "dmidecode command '$cmd' does not exist; bum!" if !-f $cmd;

my $fh;
	local %ENV = %ENV;
	delete @ENV{qw(IFS CDPATH ENV BASH_ENV PATH)};
	open($fh,'-|',$cmd) || croak "Unable to open file handle for command '$cmd': $!";
	while (local $_ = <$fh>) {
		$stor->{raw} .= $_;
	}
	close($fh) || carp "Unable to close file handle for command '$cmd': $!";

return $self->parse($stor->{raw});
}

sub parse {
	my $self = shift;
	croak 'Not called as a method by parent object'
		unless ref $self && UNIVERSAL::isa($self, __PACKAGE__);

my $stor = $objstore->{_refaddr($self)};
	my %data = (handles => []);

my @lines;
	for (@_) {
		push @lines, split(/\n/,$_);
	}

my $i = 0;
	for (; $i < @lines; $i++) {
		local $_ = $lines[$i];
		if (/^Handle [0-9A-Fx]+/) {
			last;
		} elsif (/^SYSID present\.\s*/) {
			# No-op
		} elsif (/^# dmidecode ([\d\.]+)\s*$/) {
			$data{dmidecode} = $1;
		} elsif (/^(\d+) structures occupying (\d+) bytes?\.\s*$/) {
			$data{structures} = $1;
			$data{bytes} = $2;
		} elsif (/^DMI ([\d\.]+) present\.?\s*$/) {
			$data{dmi} = $1;
		} elsif (/^SMBIOS ([\d\.]+) present\.?\s*$/) {
			$data{smbios} = $1;
		} elsif (/^(?:DMI )?[Tt]able at ([0-9A-Fx]+)\.?\s*$/) {
			$data{location} = $1;
		}
	}

for (qw(dmidecode structures bytes dmi smbios location)) {
		$data{$_} = undef if !exists $data{$_};
	}

my $raw_handle_data = '';
	for (; $i < @lines; $i++) {
		if ($lines[$i] =~ /^Handle [0-9A-Fx]+/) {
			push @{$data{handles}}, Parse::DMIDecode::Handle->new(
					raw => $raw_handle_data,
					nowarnings => $stor->{nowarnings}
				) if $raw_handle_data;
			$raw_handle_data = "$lines[$i]\n";
		} else {
			$raw_handle_data .= "$lines[$i]\n";
		}
	}

push @{$data{handles}}, Parse::DMIDecode::Handle->new(
			raw => $raw_handle_data,
			nowarnings => $stor->{nowarnings}
		) if $raw_handle_data;

if (defined $data{structures}) {
		carp sprintf("Only parsed %d structures when %d were expected",
				scalar(@{$data{handles}}), $data{structures}
			) if scalar(@{$data{handles}}) < $data{structures};
	} else {
		# A number of structures is not reported by dmicode if its SMBIOS
		# version 3 or the number is 0.
		$data{structures} = scalar(@{$data{handles}});
	}

$stor->{parsed} = \%data;
	DUMP('$stor->{parsed}',$stor->{parsed});

return $stor->{parsed}->{structures};
}

sub get_handles {
	my $self = shift;
	croak 'Not called as a method by parent object'
		unless ref $self && UNIVERSAL::isa($self, __PACKAGE__);

croak 'Odd number of elements passed when even was expected' if @_ % 2;
	my %param = @_;
	my $stor = $objstore->{_refaddr($self)};
	my @handles;
	my $getall = !keys(%param);

for my $handle (@{$stor->{parsed}->{handles}}) {
		if ($getall ||
			(defined $param{address} && $handle->address eq $param{address}) ||
			(defined $param{dmitype} && $handle->dmitype == $param{dmitype}) ||
			(defined $param{group} && defined $GROUPS{$param{group}} &&
			 grep($_ == $handle->dmitype,@{$GROUPS{$param{group}}}))
			) {
			push @handles, $handle;
		}
	}

return @handles;
}

sub structures {
	my $self = shift;
	croak 'Not called as a method by parent object'
		unless ref $self && UNIVERSAL::isa($self, __PACKAGE__);
	return $objstore->{_refaddr($self)}->{parsed}->{structures};
}

sub table_location {
	my $self = shift;
	croak 'Not called as a method by parent object'
		unless ref $self && UNIVERSAL::isa($self, __PACKAGE__);
	return $objstore->{_refaddr($self)}->{parsed}->{location};
}

sub smbios_version {
	my $self = shift;
	croak 'Not called as a method by parent object'
		unless ref $self && UNIVERSAL::isa($self, __PACKAGE__);
	return $objstore->{_refaddr($self)}->{parsed}->{smbios};
}

sub dmidecode_version {
	my $self = shift;
	croak 'Not called as a method by parent object'
		unless ref $self && UNIVERSAL::isa($self, __PACKAGE__);
	return $objstore->{_refaddr($self)}->{parsed}->{dmidecode};
}

sub handle_addresses {
	my $self = shift;
	croak 'Not called as a method by parent object'
		unless ref $self && UNIVERSAL::isa($self, __PACKAGE__);
	return map { $_->handle }
		@{$objstore->{_refaddr($self)}->{parsed}->{handles}};
}

sub keywords {
	my $self = shift;
	croak 'Not called as a method by parent object'
		unless ref $self && UNIVERSAL::isa($self, __PACKAGE__);

my %keywords;
	my $stor = $objstore->{_refaddr($self)};
	for my $handle (@{$stor->{parsed}->{handles}}) {
		for my $keyword ($handle->keywords) {
			$keywords{$keyword} = 1;
		}
	}

return sort(keys(%keywords));
}

sub keyword {
	my $self = shift;
	croak 'Not called as a method by parent object'
		unless ref $self && UNIVERSAL::isa($self, __PACKAGE__);
	croak sprintf('%s elements passed when one was expected',
		(@_ > 1 ? 'Multiple' : 'No')) if @_ != 1;

my $stor = $objstore->{_refaddr($self)};
	for my $handle (@{$stor->{parsed}->{handles}}) {
		if (grep($_ eq $_[0],$handle->keywords)) {
			return $handle->keyword($_[0]);
		}
	}
}

no warnings 'redefine';
sub UNIVERSAL::a_sub_not_likely_to_be_here { ref($_[0]) }
use warnings 'redefine';

sub _blessed ($) {
	local($@, $SIG{__DIE__}, $SIG{__WARN__});
	return length(ref($_[0]))
			? eval { $_[0]->a_sub_not_likely_to_be_here }
			: undef
}

sub _refaddr($) {
	my $pkg = ref($_[0]) or return undef;
	if (_blessed($_[0])) {
		bless $_[0], 'Scalar::Util::Fake';
	} else {
		$pkg = undef;
	}
	"$_[0]" =~ /0x(\w+)/;
	my $i = do { no warnings 'portable'; hex $1 };
	bless $_[0], $pkg if defined $pkg;
	return $i;
}

sub DESTROY {
	my $self = shift;
	delete $objstore->{_refaddr($self)};
}

sub TRACE {
	return unless $DEBUG;
	carp(shift());
}

sub DUMP {
	return unless $DEBUG;
	eval {
		require Data::Dumper;
		local $Data::Dumper::Indent = 2;
		local $Data::Dumper::Terse = 1;
		carp(shift().': '.Data::Dumper::Dumper(shift()));
	}
}

=pod

=head1 NAME

Parse::DMIDecode - Interface to SMBIOS using dmidecode

=head1 SYNOPSIS

use strict;
 use Parse::DMIDecode ();
 
 my $decoder = new Parse::DMIDecode;
 $decoder->probe; # Actively probe using dmidecode
  
 # Manually supply your own dmidecode output to be parsed
 # $decoder->parse(qx(sudo /usr/sbin/dmidecode));
  
 printf("System: %s, %s",
         $decoder->keyword("system-manufacturer"),
         $decoder->keyword("system-product-name"),
     );

=head1 DESCRIPTION

This module provides an OO interface to SMBIOS information through
the I<dmidecode> command which is known to work under a number of
Linux, BSD and BeOS variants.

=head1 METHODS

=head2 new

my $decoder = Parse::DMIDecode->new(
                     dmidecode => "/usr/sbin/dmidecode",
                     nowarnings => 1,
                 );

This is the constructor method to create a Parse::DMIDeocde
object. It accepts two optional arguments; C<dmidecode> and
C<nowarnings>.

The C<dmidecode> argument specifies the full path and filename
of the I<dmodecode> command that should used by the C<probe>
method.

The C<nowarnings> argument instructs Parse::DMIDecode not to
emit any parser warnings.

=head2 probe

$decoder->probe;

This method executes an active probe to gather information using the
I<dmidecode> command. It does not accept any arguments.

=head2 parse

my $raw = qx(sudo /usr/sbin/dmidecode);
 $decoder->prase($raw);

This method is a passive alternative to the C<probe> method. It
accepts a single string argument which should contain output from
the I<dmidecode> command, which it will parse.

=head2 keyword

my $serial_number = $decoder->keyword("system-serial-number");

=head2 keywords

my @keywords = $decoder->keywords;
 my @bios_keywords = $decoder->keywords("bios");
 
 for my $keyword (@bios_keywords) {
     printf("%s => %s\n",
             $keyword,
             $decoder->keyword($keyword)
         );
 }

=head2 handle_addresses

my @addresses = $decoder->handle_addresses;

=head2 get_handles

use Parse::DMIDecode::Constants qw(@TYPES);
 
 # Available groups to query: bios, system, baseboard,
 #    chassis, processor, memory, cache, connector, slot
 for my $handle ($decoder->get_handles( group => "memory" )) {
     printf(">> Found handle at %s (%s):\n%s\n",
             $handle->address,
             $TYPES[$handle->dmitype],
             $handle->raw
         );
 }

See L<Parse::DMIDecode::Handle> for accessor method documentation
for handle objects.

=head2 smbios_version

my $smbios_version = $decoder->smbios_version;

Returns the SMBIOS version number.

=head2 dmidecode_version

my $dmidecode_version = $decoder->dmidecode_version;

Returns the version number of the copy of I<dmidecode> that was used
to create the source data that was parsed. This value may not be available
when using older versions of I<dmidecode>.

=head2 table_location

my $memory_address = $decoder->table_location;

=head2 structures

my $total_structures = $decoder->structures;

=head1 SEE ALSO

L<Parse::DMIDecode::Handle>,
L<Parse::DMIDecode::Constants>,
L<Parse::DMIDecode::Examples>,
examples/*.pl,
L<http://search.cpan.org/src/NICOLAW/Parse-DMIDecode-0.03/examples/>,
L<http://www.nongnu.org/dmidecode/>,
L<http://linux.dell.com/libsmbios/>,
L<http://sourceforge.net/projects/x86info/>,
L<http://www.dmtf.org/standards/smbios>,
L<biosdecode(8)>, L<dmidecode(8)>, L<vpddecode(8)>

=head1 VERSION

$Id: DMIDecode.pm 1004 2007-03-11 12:43:25Z nicolaw $

=head1 AUTHOR

Nicola Worthington <nicolaw@cpan.org>

L<http://perlgirl.org.uk>

If you like this software, why not show your appreciation by sending the
author something nice from her Amazon wishlist ?

L<http://www.amazon.co.uk/gp/registry/1VZXC59ESWYK0?sort=priority>

=head1 COPYRIGHT

This software is licensed under The Apache Software License, Version 2.0.

L<http://www.apache.org/licenses/LICENSE-2.0>

=cut

__END__

Name	Type	Size	Owner/Group	Permission	Last Modified	Actions
.	dir	-	root/root	0755	2023-08-25 11:53:16
..	dir	-	root/root	0755	2023-08-25 12:05:20
CPAN	dir	-	root/root	0755	2014-09-18 11:48:34
DMIDecode	dir	-	root/root	0755	2023-08-25 11:52:56
Debian	dir	-	root/root	0755	2023-08-25 11:53:16
Method	dir	-	root/root	0755	2023-08-25 11:53:02
Yapp	dir	-	root/root	0755	2023-08-25 11:53:16
DMIDecode.pm	text/plain	11.96 KB	root/root	0644	2022-06-13 03:35:24
DebControl.pm	text/plain	17.26 KB	root/root	0444	2004-01-13 05:26:56
EDID.pm	text/plain	29.13 KB	root/root	0755	2018-07-06 05:42:37
Gitignore.pm	text/plain	1.48 KB	root/root	0644	2016-02-04 08:26:54
Gitignore.pod	text/plain	1.41 KB	root/root	0644	2016-02-04 08:28:01
RecDescent.pm	text/plain	211.5 KB	root/root	0644	2014-06-09 10:45:35
Yapp.pm	text/plain	15.89 KB	root/root	0644	2014-06-10 04:20:51

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