Example #1
0
func TestPacketUSB0(t *testing.T) {
	p := gopacket.NewPacket(testPacketUSB0, LinkTypeLinuxUSB, gopacket.Default)
	if p.ErrorLayer() != nil {
		t.Error("Failed to decode packet:", p.ErrorLayer().Error())
	}
	checkLayers(p, []gopacket.LayerType{LayerTypeUSB, LayerTypeUSBInterrupt}, t)

	if got, ok := p.Layer(LayerTypeUSB).(*USB); ok {
		want := &USB{
			BaseLayer: BaseLayer{
				Contents: []uint8{0x0, 0x38, 0x4a, 0x3b, 0x0, 0x88, 0xff, 0xff, 0x43, 0x1, 0x81, 0x1, 0x2, 0x0, 0x2d, 0x0, 0xc0, 0xd3, 0x5b, 0x50, 0x0, 0x0, 0x0, 0x0, 0x8a, 0x85, 0xa, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0},
				Payload:  []uint8{0x4},
			},
			ID:             0xffff88003b4a3800,
			EventType:      USBEventTypeComplete,
			TransferType:   USBTransportTypeInterrupt,
			Direction:      0x1,
			EndpointNumber: 0x1,
			DeviceAddress:  0x1,
			BusID:          0x2,
			TimestampSec:   1348195264,
			TimestampUsec:  689546,
			Setup:          false,
			Data:           true,
			Status:         0,
			UrbLength:      0x1,
			UrbDataLength:  0x1,
		}

		if !reflect.DeepEqual(got, want) {
			t.Errorf("USB packet processing failed:\ngot  :\n%#v\n\nwant :\n%#v\n\n", got, want)
		}
	}

}
Example #2
0
func TestPacketDot11DataIP(t *testing.T) {
	p := gopacket.NewPacket(testPacketDot11DataIP, LinkTypeIEEE80211Radio, gopacket.Default)
	if p.ErrorLayer() != nil {
		t.Error("Failed to decode packet:", p.ErrorLayer().Error())
	}
	checkLayers(p, []gopacket.LayerType{LayerTypeRadioTap, LayerTypeDot11, LayerTypeDot11Data, LayerTypeLLC, LayerTypeSNAP, LayerTypeIPv4, LayerTypeUDP, gopacket.LayerTypePayload}, t)
}
Example #3
0
func TestPacketDot11DataARP(t *testing.T) {
	p := gopacket.NewPacket(testPacketDot11DataARP, LinkTypeIEEE80211Radio, gopacket.Default)
	if p.ErrorLayer() != nil {
		t.Error("Failed to decode packet:", p.ErrorLayer().Error())
	}
	checkLayers(p, []gopacket.LayerType{LayerTypeRadioTap, LayerTypeDot11, LayerTypeDot11Data, LayerTypeLLC, LayerTypeSNAP, LayerTypeARP}, t)

	if got, ok := p.Layer(LayerTypeARP).(*ARP); ok {
		want := &ARP{
			BaseLayer: BaseLayer{
				Contents: []uint8{0x0, 0x1, 0x8, 0x0, 0x6, 0x4, 0x0, 0x1, 0x0, 0x19, 0xe3, 0xd3, 0x53, 0x52, 0xa9, 0xfe, 0xf7, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x43, 0x8, 0xe, 0x36},
				Payload:  []uint8{},
			},
			AddrType:          0x1,
			Protocol:          0x800,
			HwAddressSize:     0x6,
			ProtAddressSize:   0x4,
			Operation:         0x1,
			SourceHwAddress:   []uint8{0x0, 0x19, 0xe3, 0xd3, 0x53, 0x52},
			SourceProtAddress: []uint8{0xa9, 0xfe, 0xf7, 0x0},
			DstHwAddress:      []uint8{0x0, 0x0, 0x0, 0x0, 0x0, 0x0},
			DstProtAddress:    []uint8{0x43, 0x8, 0xe, 0x36},
		}

		if !reflect.DeepEqual(got, want) {
			t.Errorf("ARP packet processing failed:\ngot  :\n%#v\n\nwant :\n%#v\n\n", got, want)
		}
	}
}
Example #4
0
func TestPacketIPSecESP(t *testing.T) {
	p := gopacket.NewPacket(testPacketIPSecESP, LinkTypeEthernet, gopacket.Default)
	if p.ErrorLayer() != nil {
		t.Error("Failed to decode packet:", p.ErrorLayer().Error())
	}
	checkLayers(p, []gopacket.LayerType{LayerTypeEthernet, LayerTypeIPv4, LayerTypeIPSecESP}, t)
}
Example #5
0
func TestPacketDot11CtrlAck(t *testing.T) {
	p := gopacket.NewPacket(testPacketDot11CtrlAck, LinkTypeIEEE80211Radio, gopacket.Default)
	if p.ErrorLayer() != nil {
		t.Error("Failed to decode packet:", p.ErrorLayer().Error())
	}
	checkLayers(p, []gopacket.LayerType{LayerTypeRadioTap, LayerTypeDot11}, t)

	if got, ok := p.Layer(LayerTypeDot11).(*Dot11); ok {
		if !got.ChecksumValid() {
			t.Errorf("Dot11 packet processing failed:\nchecksum failed. got  :\n%#v\n\n", got)
		}
	}

	if got, ok := p.Layer(LayerTypeDot11).(*Dot11); ok {
		want := &Dot11{
			BaseLayer: BaseLayer{
				Contents: []uint8{0xd4, 0x0, 0x0, 0x0, 0x0, 0x19, 0xe3, 0xd3, 0x53, 0x52},
				Payload:  []uint8{},
			},
			Type:       Dot11TypeCtrlAck,
			Proto:      0x0,
			Flags:      0x0,
			DurationID: 0x0,
			Address1:   net.HardwareAddr{0x0, 0x19, 0xe3, 0xd3, 0x53, 0x52},
			Address2:   net.HardwareAddr(nil),
			Address3:   net.HardwareAddr(nil),
			Address4:   net.HardwareAddr(nil),
			Checksum:   0x8776e946,
		}
		if !reflect.DeepEqual(got, want) {
			t.Errorf("Dot11 packet processing failed:\ngot  :\n%#v\n\nwant :\n%#v\n\n", got, want)
		}
	}
}
Example #6
0
func TestPacketP6196(t *testing.T) {
	p := gopacket.NewPacket(testPacketP6196, LinkTypeIEEE80211Radio, gopacket.Default)
	if p.ErrorLayer() != nil {
		t.Error("Failed to decode packet:", p.ErrorLayer().Error())
	}

	checkLayers(p, []gopacket.LayerType{LayerTypeRadioTap, LayerTypeDot11, LayerTypeDot11WEP}, t)
}
Example #7
0
func TestPacketICMPv6(t *testing.T) {
	p := gopacket.NewPacket(testPacketICMPv6, LinkTypeEthernet, gopacket.Default)
	if p.ErrorLayer() != nil {
		t.Error("Failed to decode packet:", p.ErrorLayer().Error())
	}
	checkLayers(p, []gopacket.LayerType{LayerTypeEthernet, LayerTypeIPv6, LayerTypeICMPv6, gopacket.LayerTypePayload}, t)
	if got, ok := p.Layer(LayerTypeIPv6).(*IPv6); ok {
		want := &IPv6{
			BaseLayer: BaseLayer{
				Contents: []byte{0x60, 0x0, 0x0, 0x0, 0x0, 0x18,
					0x3a, 0xff, 0x26, 0x20, 0x0, 0x0, 0x10, 0x5, 0x0, 0x0, 0x26, 0xbe, 0x5,
					0xff, 0xfe, 0x27, 0xb, 0x17, 0xfe, 0x80, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
					0x2, 0x1f, 0xca, 0xff, 0xfe, 0xb3, 0x76, 0x40},
				Payload: []byte{0x88, 0x0, 0x1e, 0xd6, 0x40, 0x0, 0x0, 0x0, 0x26, 0x20,
					0x0, 0x0, 0x10, 0x5, 0x0, 0x0, 0x26, 0xbe, 0x5, 0xff, 0xfe, 0x27, 0xb,
					0x17},
			},
			Version:      6,
			TrafficClass: 0,
			FlowLabel:    0,
			Length:       24,
			NextHeader:   IPProtocolICMPv6,
			HopLimit:     255,
			SrcIP:        net.IP{0x26, 0x20, 0x0, 0x0, 0x10, 0x5, 0x0, 0x0, 0x26, 0xbe, 0x5, 0xff, 0xfe, 0x27, 0xb, 0x17},
			DstIP:        net.IP{0xfe, 0x80, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x2, 0x1f, 0xca, 0xff, 0xfe, 0xb3, 0x76, 0x40},
		}
		if !reflect.DeepEqual(got, want) {
			t.Errorf("IPv6 packet processing failed:\ngot  :\n%#v\n\nwant :\n%#v\n\n", got, want)
		}
	} else {
		t.Error("No IPv6 layer type found in packet")
	}
	if got, ok := p.Layer(LayerTypeICMPv6).(*ICMPv6); ok {
		want := &ICMPv6{
			BaseLayer: BaseLayer{
				Contents: []byte{0x88, 0x0, 0x1e, 0xd6, 0x40, 0x0, 0x0, 0x0},
				Payload: []byte{0x26, 0x20, 0x0, 0x0, 0x10,
					0x5, 0x0, 0x0, 0x26, 0xbe, 0x5, 0xff, 0xfe, 0x27, 0xb, 0x17},
			},
			TypeCode:  0x8800,
			Checksum:  0x1ed6,
			TypeBytes: []byte{0x40, 0x0, 0x0, 0x0},
		}
		if !reflect.DeepEqual(got, want) {
			t.Errorf("ICMPv6 packet processing failed:\ngot  :\n%#v\n\nwant :\n%#v\n\n", got, want)
		}
		if got.TypeCode.String() != "NeighborAdvertisement(0)" {
			t.Errorf("ICMPv6 type code, got %q want 'NeighborAdvertisement(0)'", got.TypeCode.String())
		}
	} else {
		t.Error("No ICMPv6 layer type found in packet")
	}
}
Example #8
0
// getHwAddr is a hacky but effective way to get the destination hardware
// address for our packets.  It does an ARP request for our gateway (if there is
// one) or destination IP (if no gateway is necessary), then waits for an ARP
// reply.  This is pretty slow right now, since it blocks on the ARP
// request/reply.
func (s *scanner) getHwAddr() (net.HardwareAddr, error) {
	start := time.Now()
	arpDst := s.dst
	if s.gw != nil {
		arpDst = s.gw
	}
	// Prepare the layers to send for an ARP request.
	eth := layers.Ethernet{
		SrcMAC:       s.iface.HardwareAddr,
		DstMAC:       net.HardwareAddr{0xff, 0xff, 0xff, 0xff, 0xff, 0xff},
		EthernetType: layers.EthernetTypeARP,
	}
	arp := layers.ARP{
		AddrType:          layers.LinkTypeEthernet,
		Protocol:          layers.EthernetTypeIPv4,
		HwAddressSize:     6,
		ProtAddressSize:   4,
		Operation:         layers.ARPRequest,
		SourceHwAddress:   []byte(s.iface.HardwareAddr),
		SourceProtAddress: []byte(s.src),
		DstHwAddress:      []byte{0, 0, 0, 0, 0, 0},
		DstProtAddress:    []byte(arpDst),
	}
	// Send a single ARP request packet (we never retry a send, since this
	// is just an example ;)
	if err := s.send(&eth, &arp); err != nil {
		return nil, err
	}
	// Wait 3 seconds for an ARP reply.
	for {
		if time.Since(start) > time.Second*3 {
			return nil, fmt.Errorf("timeout getting ARP reply")
		}
		data, _, err := s.handle.ReadPacketData()
		if err == pcap.NextErrorTimeoutExpired {
			continue
		} else if err != nil {
			return nil, err
		}
		packet := gopacket.NewPacket(data, layers.LayerTypeEthernet, gopacket.NoCopy)
		if arpLayer := packet.Layer(layers.LayerTypeARP); arpLayer != nil {
			arp := arpLayer.(*layers.ARP)
			if bytes.Equal(arp.SourceProtAddress, arpDst) {
				return net.HardwareAddr(arp.SourceHwAddress), nil
			}
		}
	}
}
Example #9
0
func loadDNS(dnspacket []byte, t *testing.T) *DNS {
	p := gopacket.NewPacket(dnspacket, LinkTypeEthernet, gopacket.Default)
	if p.ErrorLayer() != nil {
		t.Error("Failed to decode packet:", p.ErrorLayer().Error())
	}
	checkLayers(p, []gopacket.LayerType{LayerTypeEthernet, LayerTypeIPv4,
		LayerTypeUDP, LayerTypeDNS}, t)

	dnsL := p.Layer(LayerTypeDNS)
	if dnsL == nil {
		t.Error("No DNS Layer found")
	}

	dns, ok := dnsL.(*DNS)
	if !ok {
		return nil
	}
	return dns
}
Example #10
0
func TestUDPPacketDNS(t *testing.T) {
	p := gopacket.NewPacket(testUDPPacketDNS, LinkTypeEthernet, gopacket.Default)
	if p.ErrorLayer() != nil {
		t.Error("Failed to decode packet:", p.ErrorLayer().Error())
	}
	checkLayers(p, []gopacket.LayerType{LayerTypeEthernet, LayerTypeIPv4, LayerTypeUDP, LayerTypeDNS}, t)
	if got, ok := p.TransportLayer().(*UDP); ok {
		want := &UDP{
			BaseLayer: BaseLayer{
				Contents: []byte{0x0, 0x35, 0x89, 0x6d, 0x0, 0xd2, 0x75, 0x4a},
				Payload: []byte{0xb8, 0xd8, 0x81, 0x80, 0x0, 0x1, 0x0,
					0x7, 0x0, 0x0, 0x0, 0x0, 0x4, 0x78, 0x6b, 0x63, 0x64, 0x3, 0x63, 0x6f,
					0x6d, 0x0, 0x0, 0xf, 0x0, 0x1, 0xc0, 0xc, 0x0, 0xf, 0x0, 0x1, 0x0, 0x0,
					0x2, 0x58, 0x0, 0x18, 0x0, 0x14, 0x4, 0x41, 0x4c, 0x54, 0x32, 0x5, 0x41,
					0x53, 0x50, 0x4d, 0x58, 0x1, 0x4c, 0x6, 0x47, 0x4f, 0x4f, 0x47, 0x4c,
					0x45, 0xc0, 0x11, 0xc0, 0xc, 0x0, 0xf, 0x0, 0x1, 0x0, 0x0, 0x2, 0x58, 0x0,
					0x16, 0x0, 0x1e, 0x6, 0x41, 0x53, 0x50, 0x4d, 0x58, 0x32, 0xa, 0x47, 0x4f,
					0x4f, 0x47, 0x4c, 0x45, 0x4d, 0x41, 0x49, 0x4c, 0xc0, 0x11, 0xc0, 0xc,
					0x0, 0xf, 0x0, 0x1, 0x0, 0x0, 0x2, 0x58, 0x0, 0xb, 0x0, 0x1e, 0x6, 0x41,
					0x53, 0x50, 0x4d, 0x58, 0x33, 0xc0, 0x53, 0xc0, 0xc, 0x0, 0xf, 0x0, 0x1,
					0x0, 0x0, 0x2, 0x58, 0x0, 0xb, 0x0, 0x1e, 0x6, 0x41, 0x53, 0x50, 0x4d,
					0x58, 0x34, 0xc0, 0x53, 0xc0, 0xc, 0x0, 0xf, 0x0, 0x1, 0x0, 0x0, 0x2,
					0x58, 0x0, 0xb, 0x0, 0x1e, 0x6, 0x41, 0x53, 0x50, 0x4d, 0x58, 0x35, 0xc0,
					0x53, 0xc0, 0xc, 0x0, 0xf, 0x0, 0x1, 0x0, 0x0, 0x2, 0x58, 0x0, 0x4, 0x0,
					0xa, 0xc0, 0x2d, 0xc0, 0xc, 0x0, 0xf, 0x0, 0x1, 0x0, 0x0, 0x2, 0x58, 0x0,
					0x9, 0x0, 0x14, 0x4, 0x41, 0x4c, 0x54, 0x31, 0xc0, 0x2d},
			},
			SrcPort:  53,
			DstPort:  35181,
			Length:   210,
			Checksum: 30026,
			sPort:    []byte{0x0, 0x35},
			dPort:    []byte{0x89, 0x6d},
		}
		if !reflect.DeepEqual(got, want) {
			t.Errorf("UDP packet mismatch:\ngot  :\n%#v\n\nwant :\n%#v\n\n", got, want)
		}
	} else {
		t.Error("Transport layer packet not UDP")
	}
}
Example #11
0
func TestPacketDot11MgmtBeacon(t *testing.T) {
	p := gopacket.NewPacket(testPacketDot11MgmtBeacon, LinkTypeIEEE80211Radio, gopacket.Default)
	if p.ErrorLayer() != nil {
		t.Error("Failed to decode packet:", p.ErrorLayer().Error())
	}

	checkLayers(p, []gopacket.LayerType{LayerTypeRadioTap, LayerTypeDot11, LayerTypeDot11MgmtBeacon}, t)

	if got, ok := p.Layer(LayerTypeRadioTap).(*RadioTap); ok {
		want := &RadioTap{BaseLayer: BaseLayer{Contents: []uint8{0x0, 0x0, 0x20, 0x0, 0x67, 0x8, 0x4, 0x0, 0xe9, 0xa2, 0xfe, 0x25, 0x0, 0x0, 0x0, 0x0, 0x22, 0xc, 0xd8, 0xa0, 0x2, 0x0, 0x0, 0x0, 0x40, 0x1, 0x0, 0x0, 0x3c, 0x14, 0x24, 0x11}, Payload: []uint8{0x80, 0x0, 0x0, 0x0, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x0, 0x3, 0x7f, 0x7, 0xa0, 0x16, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xd0, 0x9b, 0x38, 0x40, 0x10, 0x28, 0x0, 0x0, 0x0, 0x0, 0x64, 0x0, 0x0, 0x5, 0x0, 0x0, 0x1, 0x8, 0x8c, 0x12, 0x98, 0x24, 0xb0, 0x48, 0x60, 0x6c, 0x3, 0x1, 0x24, 0x5, 0x4, 0x0, 0x1, 0x0, 0x0, 0x7, 0x2a, 0x55, 0x53, 0x20, 0x24, 0x1, 0x11, 0x28, 0x1, 0x11, 0x2c, 0x1, 0x11, 0x30, 0x1, 0x11, 0x34, 0x1, 0x17, 0x38, 0x1, 0x17, 0x3c, 0x1, 0x17, 0x40, 0x1, 0x17, 0x95, 0x1, 0x1e, 0x99, 0x1, 0x1e, 0x9d, 0x1, 0x1e, 0xa1, 0x1, 0x1e, 0xa5, 0x1, 0x1e, 0x20, 0x1, 0x0, 0xdd, 0x18, 0x0, 0x50, 0xf2, 0x2, 0x1, 0x1, 0x0, 0x0, 0x3, 0xa4, 0x0, 0x0, 0x27, 0xa4, 0x0, 0x0, 0x42, 0x43, 0x5e, 0x0, 0x62, 0x32, 0x2f, 0x0, 0x34, 0xc, 0x66, 0x72, 0x65, 0x65, 0x62, 0x73, 0x64, 0x2d, 0x6d, 0x65, 0x73, 0x68, 0x33, 0x17, 0x1, 0x0, 0xf, 0xac, 0x0, 0x0, 0xf, 0xac, 0x0, 0x0, 0xf, 0xac, 0xff, 0x0, 0xf, 0xac, 0xff, 0x0, 0xf, 0xac, 0xff, 0x0, 0xdf}}, Version: 0x0, Length: 0x20, Present: 0x40867, TSFT: 0x25fea2e9, Flags: 0x22, Rate: 0xc, ChannelFrequency: 0x0, ChannelFlags: 0x0, FHSS: 0x0, DBMAntennaSignal: -40, DBMAntennaNoise: -96, LockQuality: 0x0, TxAttenuation: 0x0, DBTxAttenuation: 0x0, DBMTxPower: 0, Antenna: 0x2, DBAntennaSignal: 0x0, DBAntennaNoise: 0x0}

		if !reflect.DeepEqual(got, want) {
			t.Errorf("RadioTap packet processing failed:\ngot  :\n%#v\n\nwant :\n%#v\n\n", got, want)
		}
	}

	if got, ok := p.Layer(LayerTypeDot11).(*Dot11); ok {
		want := &Dot11{
			BaseLayer: BaseLayer{
				Contents: []uint8{0x80, 0x0, 0x0, 0x0, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x0, 0x3, 0x7f, 0x7, 0xa0, 0x16, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xd0, 0x9b},
				Payload:  []uint8{0x38, 0x40, 0x10, 0x28, 0x0, 0x0, 0x0, 0x0, 0x64, 0x0, 0x0, 0x5, 0x0, 0x0, 0x1, 0x8, 0x8c, 0x12, 0x98, 0x24, 0xb0, 0x48, 0x60, 0x6c, 0x3, 0x1, 0x24, 0x5, 0x4, 0x0, 0x1, 0x0, 0x0, 0x7, 0x2a, 0x55, 0x53, 0x20, 0x24, 0x1, 0x11, 0x28, 0x1, 0x11, 0x2c, 0x1, 0x11, 0x30, 0x1, 0x11, 0x34, 0x1, 0x17, 0x38, 0x1, 0x17, 0x3c, 0x1, 0x17, 0x40, 0x1, 0x17, 0x95, 0x1, 0x1e, 0x99, 0x1, 0x1e, 0x9d, 0x1, 0x1e, 0xa1, 0x1, 0x1e, 0xa5, 0x1, 0x1e, 0x20, 0x1, 0x0, 0xdd, 0x18, 0x0, 0x50, 0xf2, 0x2, 0x1, 0x1, 0x0, 0x0, 0x3, 0xa4, 0x0, 0x0, 0x27, 0xa4, 0x0, 0x0, 0x42, 0x43, 0x5e, 0x0, 0x62, 0x32, 0x2f, 0x0, 0x34, 0xc, 0x66, 0x72, 0x65, 0x65, 0x62, 0x73, 0x64, 0x2d, 0x6d, 0x65, 0x73, 0x68, 0x33, 0x17, 0x1, 0x0, 0xf, 0xac, 0x0, 0x0, 0xf, 0xac, 0x0, 0x0, 0xf, 0xac, 0xff, 0x0, 0xf, 0xac, 0xff, 0x0, 0xf},
			},
			Type:           Dot11TypeMgmtBeacon,
			Proto:          0x0,
			Flags:          0x0,
			DurationID:     0x0,
			Address1:       net.HardwareAddr{0xff, 0xff, 0xff, 0xff, 0xff, 0xff},
			Address2:       net.HardwareAddr{0x0, 0x3, 0x7f, 0x7, 0xa0, 0x16},
			Address3:       net.HardwareAddr{0x0, 0x0, 0x0, 0x0, 0x0, 0x0},
			Address4:       net.HardwareAddr(nil),
			SequenceNumber: 0x26f, FragmentNumber: 0x10,
			Checksum: 0xdf00ffac,
		}

		if !reflect.DeepEqual(got, want) {
			t.Errorf("Dot11 packet processing failed:\ngot  :\n%#v\n\nwant :\n%#v\n\n", got, want)
		}
	}
}
Example #12
0
func TestPacketDot11MgmtAction(t *testing.T) {
	p := gopacket.NewPacket(testPacketDot11MgmtAction, LinkTypeIEEE80211Radio, gopacket.Default)
	if p.ErrorLayer() != nil {
		t.Error("Failed to decode packet:", p.ErrorLayer().Error())
	}
	checkLayers(p, []gopacket.LayerType{LayerTypeRadioTap, LayerTypeDot11, LayerTypeDot11MgmtAction}, t)

	want := `PACKET: 97 bytes
- Layer 1 (32 bytes) = RadioTap	{Contents=[..32..] Payload=[..65..] Version=0 Length=32 Present=264295 TSFT=634199967 Flags=SHORT-PREAMBLE,DATAPAD Rate=6 Mb/s ChannelFrequency=0 MHz ChannelFlags= FHSS=0 DBMAntennaSignal=-41 DBMAntennaNoise=-96 LockQuality=0 TxAttenuation=0 DBTxAttenuation=0 DBMTxPower=0 Antenna=1 DBAntennaSignal=0 DBAntennaNoise=0}
- Layer 2 (24 bytes) = Dot11	{Contents=[..24..] Payload=[..37..] Type=MgmtAction Proto=0 Flags= DurationID=0 Address1=ff:ff:ff:ff:ff:ff Address2=00:03:7f:07:a0:16 Address3=00:03:7f:07:a0:16 Address4= SequenceNumber=10 FragmentNumber=32 Checksum=0}
- Layer 3 (37 bytes) = Dot11MgmtAction	{Contents=[..37..] Payload=[]}
`
	if got := p.String(); got != want {
		t.Errorf("packet string mismatch:\n---got---\n%q\n---want---\n%q", got, want)
	}
	if _, ok := p.Layer(LayerTypeDot11).(*Dot11); !ok {
		t.Errorf("could not get Dot11 layer from packet")
	} else {
		// See note above:  this checksum fails most likely due to datapad.
		// wireshark also says this packet is malformed, so I'm not going to waste
		// too much more time on it.
		//   if !got.ChecksumValid() { t.Errorf("Dot11 packet processing failed: checksum failed")	}
	}
}
Example #13
0
func BenchmarkDecodePacketIPSecESP(b *testing.B) {
	for i := 0; i < b.N; i++ {
		gopacket.NewPacket(testPacketIPSecESP, LinkTypeEthernet, gopacket.NoCopy)
	}
}
Example #14
0
func TestPacketDot11CtrlCTS(t *testing.T) {
	p := gopacket.NewPacket(testPacketDot11CtrlCTS, LinkTypeIEEE80211Radio, gopacket.Default)
	if p.ErrorLayer() != nil {
		t.Error("Failed to decode packet:", p.ErrorLayer().Error())
	}
	checkLayers(p, []gopacket.LayerType{LayerTypeRadioTap, LayerTypeDot11}, t)

	if got, ok := p.Layer(LayerTypeRadioTap).(*RadioTap); ok {
		want := &RadioTap{
			BaseLayer: BaseLayer{
				Contents: []uint8{0x0, 0x0, 0x19, 0x0, 0x6f, 0x8, 0x0, 0x0, 0x37, 0x68, 0x3a, 0x1, 0x0, 0x0, 0x0, 0x0, 0x12, 0x30, 0x78, 0x14, 0x40, 0x1, 0xb1, 0xa4, 0x1},
				Payload:  []uint8{0xc4, 0x0, 0x94, 0x0, 0xd8, 0xa2, 0x5e, 0x97, 0x61, 0xc1, 0x36, 0x50, 0x95, 0x8e},
			},
			Version:          0x0,
			Length:           0x19,
			Present:          0x86f,
			TSFT:             0x13a6837,
			Flags:            0x12,
			Rate:             0x30,
			ChannelFrequency: 0x1478,
			ChannelFlags:     0x40,
			FHSS:             0x0,
			DBMAntennaSignal: 1,
			DBMAntennaNoise:  -79,
			LockQuality:      0x0,
			TxAttenuation:    0x0,
			DBTxAttenuation:  0x0,
			DBMTxPower:       0,
			Antenna:          0xa4,
			DBAntennaSignal:  0x0,
			DBAntennaNoise:   0x0,
		}

		if !reflect.DeepEqual(got, want) {
			t.Errorf("RadioTap packet processing failed:\ngot  :\n%#v\n\nwant :\n%#v\n\n", got, want)
		}
	}

	if got, ok := p.Layer(LayerTypeDot11).(*Dot11); ok {
		if !got.ChecksumValid() {
			t.Errorf("Dot11 packet processing failed:\nchecksum failed. got  :\n%#v\n\n", got)
		}

		want := &Dot11{
			BaseLayer: BaseLayer{
				Contents: []uint8{0xc4, 0x0, 0x94, 0x0, 0xd8, 0xa2, 0x5e, 0x97, 0x61, 0xc1},
				Payload:  []uint8{},
			},
			Type:       Dot11TypeCtrlCTS,
			Proto:      0x0,
			Flags:      0x0,
			DurationID: 0x94,
			Address1:   net.HardwareAddr{0xd8, 0xa2, 0x5e, 0x97, 0x61, 0xc1}, // check
			Address2:   net.HardwareAddr(nil),
			Address3:   net.HardwareAddr(nil),
			Address4:   net.HardwareAddr(nil),
			Checksum:   0x8e955036,
		}

		if !reflect.DeepEqual(got, want) {
			t.Errorf("Dot11 packet processing failed:\ngot  :\n%#v\n\nwant :\n%#v\n\n", got, want)
		}
	}
}
Example #15
0
func BenchmarkDecodePacketUSB0(b *testing.B) {
	for i := 0; i < b.N; i++ {
		gopacket.NewPacket(testPacketUSB0, LinkTypeLinuxUSB, gopacket.NoCopy)
	}
}
Example #16
0
func BenchmarkDecodePacketDot11CtrlCTS(b *testing.B) {
	for i := 0; i < b.N; i++ {
		gopacket.NewPacket(testPacketDot11CtrlCTS, LinkTypeIEEE80211Radio, gopacket.NoCopy)
	}
}
Example #17
0
// scan scans the dst IP address of this scanner.
func (s *scanner) scan() error {
	// First off, get the MAC address we should be sending packets to.
	hwaddr, err := s.getHwAddr()
	if err != nil {
		return err
	}
	// Construct all the network layers we need.
	eth := layers.Ethernet{
		SrcMAC:       s.iface.HardwareAddr,
		DstMAC:       hwaddr,
		EthernetType: layers.EthernetTypeIPv4,
	}
	ip4 := layers.IPv4{
		SrcIP:    s.src,
		DstIP:    s.dst,
		Version:  4,
		TTL:      64,
		Protocol: layers.IPProtocolTCP,
	}
	tcp := layers.TCP{
		SrcPort: 54321,
		DstPort: 0, // will be incremented during the scan
		SYN:     true,
	}
	tcp.SetNetworkLayerForChecksum(&ip4)

	// Create the flow we expect returning packets to have, so we can check
	// against it and discard useless packets.
	ipFlow := gopacket.NewFlow(layers.EndpointIPv4, s.dst, s.src)
	start := time.Now()
	for {
		// Send one packet per loop iteration until we've sent packets
		// to all of ports [1, 65535].
		if tcp.DstPort < 65535 {
			start = time.Now()
			tcp.DstPort++
			if err := s.send(&eth, &ip4, &tcp); err != nil {
				log.Printf("error sending to port %v: %v", tcp.DstPort, err)
			}
		}
		// Time out 5 seconds after the last packet we sent.
		if time.Since(start) > time.Second*5 {
			log.Printf("timed out for %v, assuming we've seen all we can", s.dst)
			return nil
		}

		// Read in the next packet.
		data, _, err := s.handle.ReadPacketData()
		if err == pcap.NextErrorTimeoutExpired {
			continue
		} else if err != nil {
			log.Printf("error reading packet: %v", err)
			continue
		}

		// Parse the packet.  We'd use DecodingLayerParser here if we
		// wanted to be really fast.
		packet := gopacket.NewPacket(data, layers.LayerTypeEthernet, gopacket.NoCopy)

		// Find the packets we care about, and print out logging
		// information about them.  All others are ignored.
		if net := packet.NetworkLayer(); net == nil {
			// log.Printf("packet has no network layer")
		} else if net.NetworkFlow() != ipFlow {
			// log.Printf("packet does not match our ip src/dst")
		} else if tcpLayer := packet.Layer(layers.LayerTypeTCP); tcpLayer == nil {
			// log.Printf("packet has not tcp layer")
		} else if tcp, ok := tcpLayer.(*layers.TCP); !ok {
			// We panic here because this is guaranteed to never
			// happen.
			panic("tcp layer is not tcp layer :-/")
		} else if tcp.DstPort != 54321 {
			// log.Printf("dst port %v does not match", tcp.DstPort)
		} else if tcp.RST {
			log.Printf("  port %v closed", tcp.SrcPort)
		} else if tcp.SYN && tcp.ACK {
			log.Printf("  port %v open", tcp.SrcPort)
		} else {
			// log.Printf("ignoring useless packet")
		}
	}
}
Example #18
0
func BenchmarkDecodeDNS(b *testing.B) {
	for i := 0; i < b.N; i++ {
		gopacket.NewPacket(testDNSQueryA, LinkTypeEthernet, gopacket.NoCopy)
	}
}