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// Copyright 2012, Google, Inc. All rights reserved.
// Copyright 2009-2011 Andreas Krennmair. All rights reserved.
//
// Use of this source code is governed by a BSD-style license
// that can be found in the LICENSE file in the root of the source
// tree.
package layers
import (
"github.com/google/gopacket"
"net"
"reflect"
"testing"
)
// testPacketICMPv6 is the packet:
// 10:48:30.088384 IP6 2620:0:1005:0:26be:5ff:fe27:b17 > fe80::21f:caff:feb3:7640: ICMP6, neighbor advertisement, tgt is 2620:0:1005:0:26be:5ff:fe27:b17, length 24
// 0x0000: 001f cab3 7640 24be 0527 0b17 86dd 6000 ....v@$..'....`.
// 0x0010: 0000 0018 3aff 2620 0000 1005 0000 26be ....:.&.......&.
// 0x0020: 05ff fe27 0b17 fe80 0000 0000 0000 021f ...'............
// 0x0030: caff feb3 7640 8800 1ed6 4000 0000 2620 ....v@....@...&.
// 0x0040: 0000 1005 0000 26be 05ff fe27 0b17 ......&....'..
var testPacketICMPv6 = []byte{
0x00, 0x1f, 0xca, 0xb3, 0x76, 0x40, 0x24, 0xbe, 0x05, 0x27, 0x0b, 0x17, 0x86, 0xdd, 0x60, 0x00,
0x00, 0x00, 0x00, 0x18, 0x3a, 0xff, 0x26, 0x20, 0x00, 0x00, 0x10, 0x05, 0x00, 0x00, 0x26, 0xbe,
0x05, 0xff, 0xfe, 0x27, 0x0b, 0x17, 0xfe, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x1f,
0xca, 0xff, 0xfe, 0xb3, 0x76, 0x40, 0x88, 0x00, 0x1e, 0xd6, 0x40, 0x00, 0x00, 0x00, 0x26, 0x20,
0x00, 0x00, 0x10, 0x05, 0x00, 0x00, 0x26, 0xbe, 0x05, 0xff, 0xfe, 0x27, 0x0b, 0x17,
}
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" {
t.Errorf("ICMPv6 type code, got %q want 'NeighborAdvertisement'", got.TypeCode.String())
}
} else {
t.Error("No ICMPv6 layer type found in packet")
}
}
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