#!perl -T use strict; use Test::More; use Net::Pcap; use lib 't'; use Utils; my $total = 3; # number of packets to process plan skip_all => "pcap_next() behaves too strangely for being tested on random machines"; plan skip_all => "must be run as root" unless is_allowed_to_use_pcap(); plan skip_all => "no network device available" unless find_network_device(); plan tests => $total * 16 + 4; my $has_test_exception = eval "use Test::Exception; 1"; my($dev,$pcap,$net,$mask,$filter,$data,$r,$err) = ('','','','','','',''); my %header = (); # Find a device and open it $dev = find_network_device(); Net::Pcap::lookupnet($dev, \$net, \$mask, \$err); $pcap = Net::Pcap::open_live($dev, 1024, 1, 0, \$err); # Testing error messages SKIP: { skip "Test::Exception not available", 3 unless $has_test_exception; # next() errors throws_ok(sub { Net::Pcap::next() }, '/^Usage: Net::Pcap::next\(p, pkt_header\)/', "calling next() with no argument"); throws_ok(sub { Net::Pcap::next(0, 0) }, '/^p is not of type pcap_tPtr/', "calling next() with incorrect argument type for arg1"); throws_ok(sub { Net::Pcap::next($pcap, 0) }, '/^arg2 not a hash ref/', "calling next() with incorrect argument type for arg2"); } # Compile and set a filter Net::Pcap::compile($pcap, \$filter, "ip", 0, $mask); Net::Pcap::setfilter($pcap, $filter); # Test next() my $count = 0; for (1..$total) { my($packet, %header); eval { $packet = Net::Pcap::next($pcap, \%header) }; is( $@, '', "next()" ); 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)" ); ok( defined $packet, " - packet is defined" ); is( length $packet, $header{caplen}, " - packet has the advertised size" ); $count++; } is( $count, $total, "all packets processed" ); Net::Pcap::close($pcap);