use strict;
use Net::TcpDumpLog;
use NetPacket::IP qw(:strip);
use NetPacket::TCP qw(:strip);

my $log = Net::TcpDumpLog->new();
$log->read($ARGV[0]);

my @Indexes = $log->indexes;
my $index;
my ($length_orig,$length_incl,$drops,$secs,$msecs);
my $data;

print ("IP SRC,IP DST, IP LENGTH, IP TOS, IP TTL, IP Offset, TCP ACK, TCP flags, TCP Winsize, TCP Chksum, TCP URG\n");

foreach $index (@Indexes) {

    ($length_orig,$length_incl,$drops,$secs,$msecs) = $log->header($index);

    $data = $log->data($index);
    my ($ether_dest,$ether_src,$ether_type,$ether_data) = unpack('H12H12H4a*',$data);

    my $ip_obj   = NetPacket::IP->decode($ether_data);
    my $tcp_obj  = NetPacket::TCP->decode( $ip_obj->{data});    

    print ("$i  $ip_obj->{src_ip} ($tmpIPs),$ip_obj->{dest_ip} ($tmpIPd),$ip_obj->{len},$ip_obj->{tos},$ip_obj->{ttl},$ip_obj->{foffset},$tcp_obj->{acknum},$tcp_obj->{flags}, $tcp_obj->{winsize}, $tcp_obj->{cksum}, $tcp_obj->{urg}\n");