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#!perl -Tw
use strict;
use Test::More;
use Net::Pcap;
use lib 't';
use Utils;
BEGIN {
*note = sub { print "# @_\n" } unless defined ¬e;
}
# check that Net::Pcap::Easy is available
eval "use Net::Pcap::Easy";
my $error = $@;
plan skip_all => "Net::Pcap::Easy is not available"
if $error =~ /^Can't locate/;
plan tests => 18;
is $error, "", "use Net::Pcap::Easy";
my $dev = find_network_device();
my $done = 0;
SKIP: {
skip "must be run as root", 17 unless is_allowed_to_use_pcap();
skip "no network device available", 17 unless $dev;
my $npe = Net::Pcap::Easy->new(
dev => $dev,
packets_per_loop => 1,
bytes_to_capture => 1024,
tcp_callback => \&process_tcp_packet,
);
$npe->loop until $done;
}
sub process_tcp_packet {
note "> process_tcp_packet";
my ($npe, $ether, $ip, $tcp, $header ) = @_;
my $xmit = localtime $header->{tv_sec};
note "$xmit TCP: $ip->{src_ip}:$tcp->{src_port}"
. " -> $ip->{dest_ip}:$tcp->{dest_port}";
ok( defined $header, " - header is defined" );
isa_ok( $header, 'HASH', " - header" );
for my $field (qw(len caplen tv_sec tv_usec)) {
ok( exists $header->{$field}, " - field '$field' is present" );
ok( defined $header->{$field}, " - field '$field' is defined" );
like( $header->{$field}, '/^\d+$/', " - field '$field' is a number" );
}
ok( $header->{caplen} <= $header->{len},
" - coherency check: packet length (caplen <= len)" );
my $packet = $ether->{_frame};
ok( defined $packet, " - packet is defined" );
is( length $packet, $header->{caplen}, " - packet has the advertised size" );
$done = 1;
}
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