#!/usr/bin/perl 
#
# FTester log parser v1.0
# Copyright (C) 2001-2006 Andrea Barisani <[email protected]>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as 
# published by the Free Software Foundation.

use strict;

my (@log, @logd, @id, @authorized, @filtered, @orig, @nat);

open LOG,  "$ARGV[0]" || die "Usage $0 ftest.log ftestd.log";
open LOGD, "$ARGV[1]" || die "Usage $0 ftest.log ftestd.log";

while (<LOG>) {
    next unless /^[0-9]+\s-\s/;
    next if     /^IDS/;
    my @fields = split /\s-\s/;
    $log[($fields[0] - 1)] = $_;
}

while (<LOGD>) {
    next unless /^[0-9]+\s-\s/;
    next if     /^IDS/;
    my @fieldsd = split /\s-\s/;
    $logd[($fieldsd[0] - 1)] = $_;
}

close LOG;
close LOGD;

chomp @log;
chomp @logd;

my $i = 0;

foreach (@log) {
    if ($logd[$i] and ($log[$i] eq $logd[$i])) {
        push (@authorized, $log[$i]);
    }
    elsif (!$logd[$i]) {
        push (@filtered, $log[$i]);
    }
    else {
        push (@orig, $log[$i]);
        push (@nat,  $logd[$i]);
    }
    $i++;
}

print("\n");
print("Authorized packets:\n");
print("-------------------\n");
print("\n");
foreach (@authorized) {
    next if !($_);
    print($_, "\n");
}

print("\n");
print("Modified packets (probably NAT):\n");
print("--------------------------------\n");
print("\n");
foreach (@orig) {
    next if !($_);
    print($_, "\n");
}
print("		>>>>>>>>\n");
foreach (@nat) {
    next if !($_);
    print($_, "\n");
}

print("\n");
print("Filtered or dropped packets:\n");
print("----------------------------\n");
print("\n");
foreach (@filtered) {
    next if !($_);
    print($_, "\n");
}
print("\n");