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|
#! @PATHTOPERL@ -w
# vim:syntax=perl
use strict;
use lib '@LR_PERL5LIBDIR@';
use Lire::DlfSchema;
use Lire::Syslog;
use Lire::Firewall qw/ firewall_number2names /;
use Lire::Program qw( :msg :dlf );
my %action2cisco =
(
DENY => "denied",
REJECT => "denied",
ACCEPT => "permitted",
);
init_dlf_converter( "firewall" );
my $schema = Lire::DlfSchema::load_schema( "firewall" );
my $dlf_maker =
$schema->make_hashref2asciidlf_func( qw/time action protocol
from_ip from_port rcv_intf
to_ip to_port length rule count /);
my @chain_fields = qw/rule action rcv_intf protocol from_ip from_port
to_ip to_port length tos seq_no fragment ttl /;
my $lines = 0;
my $dlflines = 0;
my $errorlines = 0;
my $parser = new Lire::Syslog;
while (<>) {
chomp;
$lines++;
eval {
my $log = $parser->parse( $_ );
die "not an ipchains line\n"
unless $log->{process} eq 'kernel';
my %dlf = ( time => $log->{timestamp} );
my @chain_infos =
$log->{content} =~ /^Packet\slog:\s
([-\w]+)\s # chain
(\w+)\s # action
(\w+)\s # interface
PROTO=(\d+)\s # protocol
(\d+\.\d+\.\d+\.\d+):(\d+)\s # from
(\d+\.\d+\.\d+\.\d+):(\d+)\s # to
L=(\d+)\s # length
S=(0x[0-9A-Fa-z]+)\s # TOS
I=(\d+)\s # Sequence number
F=(0x[0-9A-Fa-z]+)\s # Fragment offset
T=(\d+)\s # TTL
(.*)$/x # Other stuff
or die "ipchains lexer failed\n";
my $i = 0;
foreach my $f ( @chain_fields ) {
$dlf{$f} = $chain_infos[$i++];
}
$dlf{action} = $action2cisco{$dlf{action}} || $dlf{action};
$dlf{count} = 1;
firewall_number2names( \%dlf );
my $dlf = $dlf_maker->( \%dlf );
print join( " ", @$dlf), "\n";
$dlflines++;
};
if ($@) {
lr_warn( $@ );
lr_notice( qq{cannot convert line $. "$_" to firewall dlf, skipping} );
$errorlines++;
}
}
end_dlf_converter( $lines, $dlflines, $errorlines );
__END__
=pod
=head1 NAME
ipchains2dlf - convert ipchains syslog logs to firewall DLF
=head1 SYNOPSIS
B<ipchains2dlf> I<file>
=head1 DESCRIPTION
B<ipchains2dlf> converts Linux 2.2 packet log into firewall DLF format.
=head1 SEE ALSO
The Netfilter webpage at http://netfilter.samba.org/ .
=head1 AUTHORS
Francis J. Lacoste <flacoste@logreport.org>
=head1 VERSION
$Id: ipchains2dlf.in,v 1.7 2002/01/22 23:38:49 flacoste Exp $
=head1 COPYRIGHT
Copyright (C) 2001 Stichting LogReport Foundation LogReport@LogReport.org
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program (see COPYING); if not, check with
http://www.gnu.org/copyleft/gpl.html or write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
=cut
# Local Variables:
# mode: cperl
# End:
|
