diff options
Diffstat (limited to 'vendor/github.com/google/gopacket/layers/decode_test.go')
-rw-r--r-- | vendor/github.com/google/gopacket/layers/decode_test.go | 1234 |
1 files changed, 1234 insertions, 0 deletions
diff --git a/vendor/github.com/google/gopacket/layers/decode_test.go b/vendor/github.com/google/gopacket/layers/decode_test.go new file mode 100644 index 0000000..ecfbff7 --- /dev/null +++ b/vendor/github.com/google/gopacket/layers/decode_test.go @@ -0,0 +1,1234 @@ +// 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 ( + "bytes" + "encoding/hex" + "fmt" + "net" + "reflect" + "strings" + "testing" + + "github.com/google/gopacket" + "github.com/google/gopacket/bytediff" +) + +var testSimpleTCPPacket = []byte{ + 0x00, 0x00, 0x0c, 0x9f, 0xf0, 0x20, 0xbc, 0x30, 0x5b, 0xe8, 0xd3, 0x49, + 0x08, 0x00, 0x45, 0x00, 0x01, 0xa4, 0x39, 0xdf, 0x40, 0x00, 0x40, 0x06, + 0x55, 0x5a, 0xac, 0x11, 0x51, 0x49, 0xad, 0xde, 0xfe, 0xe1, 0xc5, 0xf7, + 0x00, 0x50, 0xc5, 0x7e, 0x0e, 0x48, 0x49, 0x07, 0x42, 0x32, 0x80, 0x18, + 0x00, 0x73, 0x9a, 0x8f, 0x00, 0x00, 0x01, 0x01, 0x08, 0x0a, 0x03, 0x77, + 0x37, 0x9c, 0x42, 0x77, 0x5e, 0x3a, 0x47, 0x45, 0x54, 0x20, 0x2f, 0x20, + 0x48, 0x54, 0x54, 0x50, 0x2f, 0x31, 0x2e, 0x31, 0x0d, 0x0a, 0x48, 0x6f, + 0x73, 0x74, 0x3a, 0x20, 0x77, 0x77, 0x77, 0x2e, 0x66, 0x69, 0x73, 0x68, + 0x2e, 0x63, 0x6f, 0x6d, 0x0d, 0x0a, 0x43, 0x6f, 0x6e, 0x6e, 0x65, 0x63, + 0x74, 0x69, 0x6f, 0x6e, 0x3a, 0x20, 0x6b, 0x65, 0x65, 0x70, 0x2d, 0x61, + 0x6c, 0x69, 0x76, 0x65, 0x0d, 0x0a, 0x55, 0x73, 0x65, 0x72, 0x2d, 0x41, + 0x67, 0x65, 0x6e, 0x74, 0x3a, 0x20, 0x4d, 0x6f, 0x7a, 0x69, 0x6c, 0x6c, + 0x61, 0x2f, 0x35, 0x2e, 0x30, 0x20, 0x28, 0x58, 0x31, 0x31, 0x3b, 0x20, + 0x4c, 0x69, 0x6e, 0x75, 0x78, 0x20, 0x78, 0x38, 0x36, 0x5f, 0x36, 0x34, + 0x29, 0x20, 0x41, 0x70, 0x70, 0x6c, 0x65, 0x57, 0x65, 0x62, 0x4b, 0x69, + 0x74, 0x2f, 0x35, 0x33, 0x35, 0x2e, 0x32, 0x20, 0x28, 0x4b, 0x48, 0x54, + 0x4d, 0x4c, 0x2c, 0x20, 0x6c, 0x69, 0x6b, 0x65, 0x20, 0x47, 0x65, 0x63, + 0x6b, 0x6f, 0x29, 0x20, 0x43, 0x68, 0x72, 0x6f, 0x6d, 0x65, 0x2f, 0x31, + 0x35, 0x2e, 0x30, 0x2e, 0x38, 0x37, 0x34, 0x2e, 0x31, 0x32, 0x31, 0x20, + 0x53, 0x61, 0x66, 0x61, 0x72, 0x69, 0x2f, 0x35, 0x33, 0x35, 0x2e, 0x32, + 0x0d, 0x0a, 0x41, 0x63, 0x63, 0x65, 0x70, 0x74, 0x3a, 0x20, 0x74, 0x65, + 0x78, 0x74, 0x2f, 0x68, 0x74, 0x6d, 0x6c, 0x2c, 0x61, 0x70, 0x70, 0x6c, + 0x69, 0x63, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x2f, 0x78, 0x68, 0x74, 0x6d, + 0x6c, 0x2b, 0x78, 0x6d, 0x6c, 0x2c, 0x61, 0x70, 0x70, 0x6c, 0x69, 0x63, + 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x2f, 0x78, 0x6d, 0x6c, 0x3b, 0x71, 0x3d, + 0x30, 0x2e, 0x39, 0x2c, 0x2a, 0x2f, 0x2a, 0x3b, 0x71, 0x3d, 0x30, 0x2e, + 0x38, 0x0d, 0x0a, 0x41, 0x63, 0x63, 0x65, 0x70, 0x74, 0x2d, 0x45, 0x6e, + 0x63, 0x6f, 0x64, 0x69, 0x6e, 0x67, 0x3a, 0x20, 0x67, 0x7a, 0x69, 0x70, + 0x2c, 0x64, 0x65, 0x66, 0x6c, 0x61, 0x74, 0x65, 0x2c, 0x73, 0x64, 0x63, + 0x68, 0x0d, 0x0a, 0x41, 0x63, 0x63, 0x65, 0x70, 0x74, 0x2d, 0x4c, 0x61, + 0x6e, 0x67, 0x75, 0x61, 0x67, 0x65, 0x3a, 0x20, 0x65, 0x6e, 0x2d, 0x55, + 0x53, 0x2c, 0x65, 0x6e, 0x3b, 0x71, 0x3d, 0x30, 0x2e, 0x38, 0x0d, 0x0a, + 0x41, 0x63, 0x63, 0x65, 0x70, 0x74, 0x2d, 0x43, 0x68, 0x61, 0x72, 0x73, + 0x65, 0x74, 0x3a, 0x20, 0x49, 0x53, 0x4f, 0x2d, 0x38, 0x38, 0x35, 0x39, + 0x2d, 0x31, 0x2c, 0x75, 0x74, 0x66, 0x2d, 0x38, 0x3b, 0x71, 0x3d, 0x30, + 0x2e, 0x37, 0x2c, 0x2a, 0x3b, 0x71, 0x3d, 0x30, 0x2e, 0x33, 0x0d, 0x0a, + 0x0d, 0x0a, +} + +var testDecodeOptions = gopacket.DecodeOptions{ + SkipDecodeRecovery: true, +} + +// Benchmarks for actual gopacket code + +func BenchmarkLayerClassSliceContains(b *testing.B) { + lc := gopacket.NewLayerClassSlice([]gopacket.LayerType{LayerTypeTCP, LayerTypeEthernet}) + for i := 0; i < b.N; i++ { + _ = lc.Contains(LayerTypeTCP) + } +} + +func BenchmarkLayerClassMapContains(b *testing.B) { + lc := gopacket.NewLayerClassMap([]gopacket.LayerType{LayerTypeTCP, LayerTypeEthernet}) + for i := 0; i < b.N; i++ { + _ = lc.Contains(LayerTypeTCP) + } +} + +func BenchmarkLazyNoCopyEthLayer(b *testing.B) { + for i := 0; i < b.N; i++ { + gopacket.NewPacket(testSimpleTCPPacket, LinkTypeEthernet, gopacket.DecodeOptions{Lazy: true, NoCopy: true}).Layer(LayerTypeEthernet) + } +} + +func BenchmarkLazyNoCopyIPLayer(b *testing.B) { + for i := 0; i < b.N; i++ { + gopacket.NewPacket(testSimpleTCPPacket, LinkTypeEthernet, gopacket.DecodeOptions{Lazy: true, NoCopy: true}).Layer(LayerTypeIPv4) + } +} + +func BenchmarkLazyNoCopyTCPLayer(b *testing.B) { + for i := 0; i < b.N; i++ { + gopacket.NewPacket(testSimpleTCPPacket, LinkTypeEthernet, gopacket.DecodeOptions{Lazy: true, NoCopy: true}).Layer(LayerTypeTCP) + } +} + +func BenchmarkLazyNoCopyAllLayers(b *testing.B) { + for i := 0; i < b.N; i++ { + gopacket.NewPacket(testSimpleTCPPacket, LinkTypeEthernet, gopacket.DecodeOptions{Lazy: true, NoCopy: true}).Layers() + } +} + +func BenchmarkDefault(b *testing.B) { + for i := 0; i < b.N; i++ { + gopacket.NewPacket(testSimpleTCPPacket, LinkTypeEthernet, gopacket.Default) + } +} + +func getSerializeLayers() []gopacket.SerializableLayer { + p := gopacket.NewPacket(testSimpleTCPPacket, LinkTypeEthernet, testDecodeOptions) + slayers := []gopacket.SerializableLayer{} + for _, l := range p.Layers() { + slayers = append(slayers, l.(gopacket.SerializableLayer)) + } + p.Layer(LayerTypeTCP).(*TCP).SetNetworkLayerForChecksum( + p.NetworkLayer()) + return slayers +} + +func BenchmarkSerializeTcpNoOptions(b *testing.B) { + slayers := getSerializeLayers() + buf := gopacket.NewSerializeBuffer() + opts := gopacket.SerializeOptions{} + for i := 0; i < b.N; i++ { + gopacket.SerializeLayers(buf, opts, slayers...) + } +} + +func BenchmarkSerializeTcpFixLengths(b *testing.B) { + slayers := getSerializeLayers() + buf := gopacket.NewSerializeBuffer() + opts := gopacket.SerializeOptions{FixLengths: true} + for i := 0; i < b.N; i++ { + gopacket.SerializeLayers(buf, opts, slayers...) + } +} + +func BenchmarkSerializeTcpComputeChecksums(b *testing.B) { + slayers := getSerializeLayers() + buf := gopacket.NewSerializeBuffer() + opts := gopacket.SerializeOptions{ComputeChecksums: true} + for i := 0; i < b.N; i++ { + gopacket.SerializeLayers(buf, opts, slayers...) + } +} + +func BenchmarkSerializeTcpFixLengthsComputeChecksums(b *testing.B) { + slayers := getSerializeLayers() + buf := gopacket.NewSerializeBuffer() + opts := gopacket.SerializeOptions{FixLengths: true, ComputeChecksums: true} + for i := 0; i < b.N; i++ { + gopacket.SerializeLayers(buf, opts, slayers...) + } +} + +func BenchmarkLazy(b *testing.B) { + for i := 0; i < b.N; i++ { + gopacket.NewPacket(testSimpleTCPPacket, LinkTypeEthernet, gopacket.Lazy) + } +} + +func BenchmarkNoCopy(b *testing.B) { + for i := 0; i < b.N; i++ { + gopacket.NewPacket(testSimpleTCPPacket, LinkTypeEthernet, gopacket.NoCopy) + } +} + +func BenchmarkLazyNoCopy(b *testing.B) { + for i := 0; i < b.N; i++ { + gopacket.NewPacket(testSimpleTCPPacket, LinkTypeEthernet, gopacket.DecodeOptions{Lazy: true, NoCopy: true}) + } +} + +func BenchmarkKnownStack(b *testing.B) { + stack := []gopacket.DecodingLayer{&Ethernet{}, &IPv4{}, &TCP{}, &gopacket.Payload{}} + nf := gopacket.NilDecodeFeedback + for i := 0; i < b.N; i++ { + data := testSimpleTCPPacket[:] + for _, d := range stack { + _ = d.DecodeFromBytes(data, nf) + data = d.LayerPayload() + } + } +} + +func BenchmarkDecodingLayerParserIgnorePanic(b *testing.B) { + decoded := make([]gopacket.LayerType, 0, 20) + dlp := gopacket.NewDecodingLayerParser(LayerTypeEthernet, &Ethernet{}, &IPv4{}, &TCP{}, &gopacket.Payload{}) + dlp.IgnorePanic = true + for i := 0; i < b.N; i++ { + dlp.DecodeLayers(testSimpleTCPPacket, &decoded) + } +} + +func BenchmarkDecodingLayerParserHandlePanic(b *testing.B) { + decoded := make([]gopacket.LayerType, 0, 20) + dlp := gopacket.NewDecodingLayerParser(LayerTypeEthernet, &Ethernet{}, &IPv4{}, &TCP{}, &gopacket.Payload{}) + dlp.IgnorePanic = false + for i := 0; i < b.N; i++ { + dlp.DecodeLayers(testSimpleTCPPacket, &decoded) + } +} + +func BenchmarkAlloc(b *testing.B) { + for i := 0; i < b.N; i++ { + _ = &TCP{} + } +} + +func BenchmarkFlow(b *testing.B) { + p := gopacket.NewPacket(testSimpleTCPPacket, LinkTypeEthernet, gopacket.DecodeOptions{Lazy: true, NoCopy: true}) + net := p.NetworkLayer() + for i := 0; i < b.N; i++ { + net.NetworkFlow() + } +} + +func BenchmarkEndpoints(b *testing.B) { + p := gopacket.NewPacket(testSimpleTCPPacket, LinkTypeEthernet, gopacket.DecodeOptions{Lazy: true, NoCopy: true}) + flow := p.NetworkLayer().NetworkFlow() + for i := 0; i < b.N; i++ { + flow.Endpoints() + } +} + +func BenchmarkTCPLayerFromDecodedPacket(b *testing.B) { + b.StopTimer() + p := gopacket.NewPacket(testSimpleTCPPacket, LinkTypeEthernet, testDecodeOptions) + b.StartTimer() + for i := 0; i < b.N; i++ { + _ = p.Layer(LayerTypeTCP) + } +} + +func BenchmarkTCPLayerClassFromDecodedPacket(b *testing.B) { + b.StopTimer() + p := gopacket.NewPacket(testSimpleTCPPacket, LinkTypeEthernet, testDecodeOptions) + lc := gopacket.NewLayerClass([]gopacket.LayerType{LayerTypeTCP}) + b.StartTimer() + for i := 0; i < b.N; i++ { + _ = p.LayerClass(lc) + } +} + +func BenchmarkTCPTransportLayerFromDecodedPacket(b *testing.B) { + b.StopTimer() + p := gopacket.NewPacket(testSimpleTCPPacket, LinkTypeEthernet, testDecodeOptions) + b.StartTimer() + for i := 0; i < b.N; i++ { + _ = p.TransportLayer() + } +} + +func testDecoder([]byte, gopacket.PacketBuilder) error { + return nil +} + +func BenchmarkDecodeFuncCallOverheadDirectCall(b *testing.B) { + var data []byte + var pb gopacket.PacketBuilder + for i := 0; i < b.N; i++ { + _ = testDecoder(data, pb) + } +} + +func BenchmarkDecodeFuncCallOverheadDecoderCall(b *testing.B) { + d := gopacket.DecodeFunc(testDecoder) + var data []byte + var pb gopacket.PacketBuilder + for i := 0; i < b.N; i++ { + _ = d.Decode(data, pb) + } +} + +func BenchmarkDecodeFuncCallOverheadArrayCall(b *testing.B) { + EthernetTypeMetadata[1] = EnumMetadata{DecodeWith: gopacket.DecodeFunc(testDecoder)} + d := EthernetType(1) + var data []byte + var pb gopacket.PacketBuilder + for i := 0; i < b.N; i++ { + _ = d.Decode(data, pb) + } +} + +func BenchmarkFmtVerboseString(b *testing.B) { + b.StopTimer() + p := gopacket.NewPacket(testSimpleTCPPacket, LinkTypeEthernet, testDecodeOptions) + b.StartTimer() + for i := 0; i < b.N; i++ { + _ = fmt.Sprintf("%#v", p) + } +} + +func BenchmarkPacketString(b *testing.B) { + b.StopTimer() + p := gopacket.NewPacket(testSimpleTCPPacket, LinkTypeEthernet, testDecodeOptions) + b.StartTimer() + for i := 0; i < b.N; i++ { + _ = p.String() + } +} + +func BenchmarkPacketDumpString(b *testing.B) { + b.StopTimer() + p := gopacket.NewPacket(testSimpleTCPPacket, LinkTypeEthernet, testDecodeOptions) + b.StartTimer() + for i := 0; i < b.N; i++ { + _ = p.String() + } +} + +// TestFlowMapKey makes sure a flow and an endpoint can be used as map keys. +func TestFlowMapKey(t *testing.T) { + _ = map[gopacket.Flow]bool{} + _ = map[gopacket.Endpoint]bool{} + _ = map[[2]gopacket.Flow]bool{} +} + +func TestDecodeSimpleTCPPacket(t *testing.T) { + equal := func(desc, want string, got fmt.Stringer) { + if want != got.String() { + t.Errorf("%s: got %q want %q", desc, got.String(), want) + } + } + p := gopacket.NewPacket(testSimpleTCPPacket, LinkTypeEthernet, gopacket.DecodeOptions{Lazy: true, NoCopy: true}) + if eth := p.LinkLayer(); eth == nil { + t.Error("No ethernet layer found") + } else { + equal("Eth Src", "bc:30:5b:e8:d3:49", eth.LinkFlow().Src()) + equal("Eth Dst", "00:00:0c:9f:f0:20", eth.LinkFlow().Dst()) + } + if net := p.NetworkLayer(); net == nil { + t.Error("No net layer found") + } else if ip, ok := net.(*IPv4); !ok { + t.Error("Net layer is not IP layer") + } else { + equal("IP Src", "172.17.81.73", net.NetworkFlow().Src()) + equal("IP Dst", "173.222.254.225", net.NetworkFlow().Dst()) + want := &IPv4{ + BaseLayer: BaseLayer{testSimpleTCPPacket[14:34], testSimpleTCPPacket[34:]}, + Version: 4, + IHL: 5, + TOS: 0, + Length: 420, + Id: 14815, + Flags: 0x02, + FragOffset: 0, + TTL: 64, + Protocol: 6, + Checksum: 0x555A, + SrcIP: []byte{172, 17, 81, 73}, + DstIP: []byte{173, 222, 254, 225}, + } + if !reflect.DeepEqual(ip, want) { + t.Errorf("IP layer mismatch, \ngot %#v\nwant %#v\n", ip, want) + } + } + if trans := p.TransportLayer(); trans == nil { + t.Error("No transport layer found") + } else if tcp, ok := trans.(*TCP); !ok { + t.Error("Transport layer is not TCP layer") + } else { + equal("TCP Src", "50679", trans.TransportFlow().Src()) + equal("TCP Dst", "80", trans.TransportFlow().Dst()) + want := &TCP{ + BaseLayer: BaseLayer{testSimpleTCPPacket[34:66], testSimpleTCPPacket[66:]}, + SrcPort: 50679, + DstPort: 80, + Seq: 0xc57e0e48, + Ack: 0x49074232, + DataOffset: 8, + ACK: true, + PSH: true, + Window: 0x73, + Checksum: 0x9a8f, + Urgent: 0, + sPort: []byte{0xc5, 0xf7}, + dPort: []byte{0x0, 0x50}, + Options: []TCPOption{ + TCPOption{ + OptionType: 0x1, + OptionLength: 0x1, + }, + TCPOption{ + OptionType: 0x1, + OptionLength: 0x1, + }, + TCPOption{ + OptionType: 0x8, + OptionLength: 0xa, + OptionData: []byte{0x3, 0x77, 0x37, 0x9c, 0x42, 0x77, 0x5e, 0x3a}, + }, + }, + opts: [4]TCPOption{ + TCPOption{ + OptionType: 0x1, + OptionLength: 0x1, + }, + TCPOption{ + OptionType: 0x1, + OptionLength: 0x1, + }, + TCPOption{ + OptionType: 0x8, + OptionLength: 0xa, + OptionData: []byte{0x3, 0x77, 0x37, 0x9c, 0x42, 0x77, 0x5e, 0x3a}, + }, + TCPOption{}, + }, + } + if !reflect.DeepEqual(tcp, want) { + t.Errorf("TCP layer mismatch\ngot %#v\nwant %#v", tcp, want) + } + } + if payload, ok := p.Layer(gopacket.LayerTypePayload).(*gopacket.Payload); payload == nil || !ok { + t.Error("No payload layer found") + } else { + if string(payload.Payload()) != "GET / HTTP/1.1\r\nHost: www.fish.com\r\nConnection: keep-alive\r\nUser-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/535.2 (KHTML, like Gecko) Chrome/15.0.874.121 Safari/535.2\r\nAccept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8\r\nAccept-Encoding: gzip,deflate,sdch\r\nAccept-Language: en-US,en;q=0.8\r\nAccept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3\r\n\r\n" { + t.Error("--- Payload STRING ---\n", string(payload.Payload()), "\n--- Payload BYTES ---\n", payload.Payload()) + } + } + + // Test re-serialization. + testSerialization(t, p, testSimpleTCPPacket) +} + +type canSetNetLayer interface { + SetNetworkLayerForChecksum(gopacket.NetworkLayer) error +} + +func testSerialization(t *testing.T, p gopacket.Packet, data []byte) { + for _, opts := range []gopacket.SerializeOptions{ + gopacket.SerializeOptions{}, + gopacket.SerializeOptions{FixLengths: true}, + gopacket.SerializeOptions{ComputeChecksums: true}, + gopacket.SerializeOptions{FixLengths: true, ComputeChecksums: true}, + } { + testSerializationWithOpts(t, p, data, opts) + } +} + +func testSerializationWithOpts(t *testing.T, p gopacket.Packet, data []byte, opts gopacket.SerializeOptions) { + // Test re-serialization. + slayers := []gopacket.SerializableLayer{} + for _, l := range p.Layers() { + slayers = append(slayers, l.(gopacket.SerializableLayer)) + if h, ok := l.(canSetNetLayer); ok { + if err := h.SetNetworkLayerForChecksum(p.NetworkLayer()); err != nil { + t.Fatal("can't set network layer:", err) + } + } + } + buf := gopacket.NewSerializeBuffer() + err := gopacket.SerializeLayers(buf, opts, slayers...) + if err != nil { + t.Errorf("unable to reserialize layers with opts %#v: %v", opts, err) + } else if !bytes.Equal(buf.Bytes(), data) { + t.Errorf("serialization failure with opts %#v:\n---want---\n%v\n---got---\n%v\nBASH-colorized diff, want->got:\n%v\n\n---PACKET---\n%v", + opts, hex.Dump(data), hex.Dump(buf.Bytes()), bytediff.BashOutput.String(bytediff.Diff(data, buf.Bytes())), p) + } +} + +// Makes sure packet payload doesn't display the 6 trailing null of this packet +// as part of the payload. They're actually the ethernet trailer. +func TestDecodeSmallTCPPacketHasEmptyPayload(t *testing.T) { + smallPacket := []byte{ + 0xbc, 0x30, 0x5b, 0xe8, 0xd3, 0x49, 0xb8, 0xac, 0x6f, 0x92, 0xd5, 0xbf, + 0x08, 0x00, 0x45, 0x00, 0x00, 0x28, 0x00, 0x00, 0x40, 0x00, 0x40, 0x06, + 0x3f, 0x9f, 0xac, 0x11, 0x51, 0xc5, 0xac, 0x11, 0x51, 0x49, 0x00, 0x63, + 0x9a, 0xef, 0x00, 0x00, 0x00, 0x00, 0x2e, 0xc1, 0x27, 0x83, 0x50, 0x14, + 0x00, 0x00, 0xc3, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + } + p := gopacket.NewPacket(smallPacket, LinkTypeEthernet, testDecodeOptions) + + if payload := p.Layer(gopacket.LayerTypePayload); payload != nil { + t.Error("Payload found for empty TCP packet") + } + + testSerialization(t, p, smallPacket) +} + +func TestDecodeVLANPacket(t *testing.T) { + p := gopacket.NewPacket( + []byte{ + 0x00, 0x10, 0xdb, 0xff, 0x10, 0x00, 0x00, 0x15, 0x2c, 0x9d, 0xcc, 0x00, + 0x81, 0x00, 0x01, 0xf7, 0x08, 0x00, 0x45, 0x00, 0x00, 0x28, 0x29, 0x8d, + 0x40, 0x00, 0x7d, 0x06, 0x83, 0xa0, 0xac, 0x1b, 0xca, 0x8e, 0x45, 0x16, + 0x94, 0xe2, 0xd4, 0x0a, 0x00, 0x50, 0xdf, 0xab, 0x9c, 0xc6, 0xcd, 0x1e, + 0xe5, 0xd1, 0x50, 0x10, 0x01, 0x00, 0x5a, 0x74, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, + }, LinkTypeEthernet, testDecodeOptions) + if err := p.ErrorLayer(); err != nil { + t.Error("Error while parsing vlan packet:", err) + } + if vlan := p.Layer(LayerTypeDot1Q); vlan == nil { + t.Error("Didn't detect vlan") + } else if _, ok := vlan.(*Dot1Q); !ok { + t.Error("LayerTypeDot1Q layer is not a Dot1Q object") + } + for i, l := range p.Layers() { + t.Logf("Layer %d: %#v", i, l) + } + want := []gopacket.LayerType{LayerTypeEthernet, LayerTypeDot1Q, LayerTypeIPv4, LayerTypeTCP} + checkLayers(p, want, t) +} + +func TestDecodeSCTPPackets(t *testing.T) { + sctpPackets := [][]byte{ + []byte{ // INIT + 0x00, 0x00, 0x0c, 0x9f, 0xf0, 0x1f, 0x24, 0xbe, 0x05, 0x27, 0x0b, 0x17, 0x08, 0x00, 0x45, 0x02, + 0x00, 0x44, 0x00, 0x00, 0x40, 0x00, 0x40, 0x84, 0xc4, 0x22, 0xac, 0x1d, 0x14, 0x0f, 0xac, 0x19, + 0x09, 0xcc, 0x27, 0x0f, 0x22, 0xb8, 0x00, 0x00, 0x00, 0x00, 0x19, 0x6b, 0x0b, 0x40, 0x01, 0x00, + 0x00, 0x24, 0xb6, 0x96, 0xb0, 0x9e, 0x00, 0x01, 0xc0, 0x00, 0x00, 0x0a, 0xff, 0xff, 0xdb, 0x85, + 0x60, 0x23, 0x00, 0x0c, 0x00, 0x06, 0x00, 0x05, 0x00, 0x00, 0x80, 0x00, 0x00, 0x04, 0xc0, 0x00, + 0x00, 0x04, + }, []byte{ // INIT ACK + 0x24, 0xbe, 0x05, 0x27, 0x0b, 0x17, 0x00, 0x1f, 0xca, 0xb3, 0x76, 0x40, 0x08, 0x00, 0x45, 0x20, + 0x01, 0x24, 0x00, 0x00, 0x40, 0x00, 0x36, 0x84, 0xcd, 0x24, 0xac, 0x19, 0x09, 0xcc, 0xac, 0x1d, + 0x14, 0x0f, 0x22, 0xb8, 0x27, 0x0f, 0xb6, 0x96, 0xb0, 0x9e, 0x4b, 0xab, 0x40, 0x9a, 0x02, 0x00, + 0x01, 0x04, 0x32, 0x80, 0xfb, 0x42, 0x00, 0x00, 0xf4, 0x00, 0x00, 0x0a, 0x00, 0x0a, 0x85, 0x98, + 0xb1, 0x26, 0x00, 0x07, 0x00, 0xe8, 0xd3, 0x08, 0xce, 0xe2, 0x52, 0x95, 0xcc, 0x09, 0xa1, 0x4c, + 0x6f, 0xa7, 0x9e, 0xba, 0x03, 0xa1, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x42, 0xfb, 0x80, 0x32, 0x9e, 0xb0, + 0x96, 0xb6, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0c, 0x46, 0xc2, 0x50, 0x00, 0x00, + 0x00, 0x00, 0x5e, 0x25, 0x09, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0a, 0x00, 0x0a, 0x00, 0x26, 0xb1, + 0x98, 0x85, 0x02, 0x00, 0x27, 0x0f, 0xac, 0x1d, 0x14, 0x0f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xb8, 0x22, + 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x02, 0x00, 0x24, 0x6a, 0x72, 0x5c, 0x1c, 0x3c, 0xaa, + 0x7a, 0xcd, 0xd3, 0x8f, 0x52, 0x78, 0x7c, 0x77, 0xfd, 0x46, 0xbd, 0x72, 0x82, 0xc1, 0x1f, 0x70, + 0x44, 0xcc, 0xc7, 0x9b, 0x9b, 0x7b, 0x13, 0x54, 0x3f, 0x89, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x24, 0xb6, 0x96, + 0xb0, 0x9e, 0x00, 0x01, 0xc0, 0x00, 0x00, 0x0a, 0xff, 0xff, 0xdb, 0x85, 0x60, 0x23, 0x00, 0x0c, + 0x00, 0x06, 0x00, 0x05, 0x00, 0x00, 0x80, 0x00, 0x00, 0x04, 0xc0, 0x00, 0x00, 0x04, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x00, 0x00, 0x04, 0xc0, 0x00, + 0x00, 0x04, + }, []byte{ // COOKIE ECHO, DATA + 0x00, 0x00, 0x0c, 0x9f, 0xf0, 0x1f, 0x24, 0xbe, 0x05, 0x27, 0x0b, 0x17, 0x08, 0x00, 0x45, 0x02, + 0x01, 0x20, 0x00, 0x00, 0x40, 0x00, 0x40, 0x84, 0xc3, 0x46, 0xac, 0x1d, 0x14, 0x0f, 0xac, 0x19, + 0x09, 0xcc, 0x27, 0x0f, 0x22, 0xb8, 0x32, 0x80, 0xfb, 0x42, 0x01, 0xf9, 0xf3, 0xa9, 0x0a, 0x00, + 0x00, 0xe8, 0xd3, 0x08, 0xce, 0xe2, 0x52, 0x95, 0xcc, 0x09, 0xa1, 0x4c, 0x6f, 0xa7, 0x9e, 0xba, + 0x03, 0xa1, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x42, 0xfb, 0x80, 0x32, 0x9e, 0xb0, 0x96, 0xb6, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0c, 0x46, 0xc2, 0x50, 0x00, 0x00, 0x00, 0x00, 0x5e, 0x25, + 0x09, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0a, 0x00, 0x0a, 0x00, 0x26, 0xb1, 0x98, 0x85, 0x02, 0x00, + 0x27, 0x0f, 0xac, 0x1d, 0x14, 0x0f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xb8, 0x22, 0x01, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x80, 0x02, 0x00, 0x24, 0x6a, 0x72, 0x5c, 0x1c, 0x3c, 0xaa, 0x7a, 0xcd, 0xd3, 0x8f, + 0x52, 0x78, 0x7c, 0x77, 0xfd, 0x46, 0xbd, 0x72, 0x82, 0xc1, 0x1f, 0x70, 0x44, 0xcc, 0xc7, 0x9b, + 0x9b, 0x7b, 0x13, 0x54, 0x3f, 0x89, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x24, 0xb6, 0x96, 0xb0, 0x9e, 0x00, 0x01, + 0xc0, 0x00, 0x00, 0x0a, 0xff, 0xff, 0xdb, 0x85, 0x60, 0x23, 0x00, 0x0c, 0x00, 0x06, 0x00, 0x05, + 0x00, 0x00, 0x80, 0x00, 0x00, 0x04, 0xc0, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x00, 0x16, 0xdb, 0x85, 0x60, 0x23, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x66, 0x6f, 0x6f, 0x21, 0x0a, 0x00, 0x00, 0x00, + }, []byte{ // COOKIE ACK, SACK + 0x24, 0xbe, 0x05, 0x27, 0x0b, 0x17, 0x00, 0x1f, 0xca, 0xb3, 0x76, 0x40, 0x08, 0x00, 0x45, 0x20, + 0x00, 0x34, 0x00, 0x00, 0x40, 0x00, 0x36, 0x84, 0xce, 0x14, 0xac, 0x19, 0x09, 0xcc, 0xac, 0x1d, + 0x14, 0x0f, 0x22, 0xb8, 0x27, 0x0f, 0xb6, 0x96, 0xb0, 0x9e, 0xed, 0x64, 0x30, 0x98, 0x0b, 0x00, + 0x00, 0x04, 0x03, 0x00, 0x00, 0x10, 0xdb, 0x85, 0x60, 0x23, 0x00, 0x00, 0xf3, 0xfa, 0x00, 0x00, + 0x00, 0x00, + }, []byte{ // DATA + 0x00, 0x00, 0x0c, 0x9f, 0xf0, 0x1f, 0x24, 0xbe, 0x05, 0x27, 0x0b, 0x17, 0x08, 0x00, 0x45, 0x02, + 0x00, 0x3c, 0x00, 0x00, 0x40, 0x00, 0x40, 0x84, 0xc4, 0x2a, 0xac, 0x1d, 0x14, 0x0f, 0xac, 0x19, + 0x09, 0xcc, 0x27, 0x0f, 0x22, 0xb8, 0x32, 0x80, 0xfb, 0x42, 0xa1, 0xe3, 0xb2, 0x31, 0x00, 0x03, + 0x00, 0x19, 0xdb, 0x85, 0x60, 0x24, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x62, 0x69, + 0x7a, 0x7a, 0x6c, 0x65, 0x21, 0x0a, 0x00, 0x00, 0x00, 0x00, + }, []byte{ // SACK + 0x24, 0xbe, 0x05, 0x27, 0x0b, 0x17, 0x00, 0x1f, 0xca, 0xb3, 0x76, 0x40, 0x08, 0x00, 0x45, 0x20, + 0x00, 0x30, 0x00, 0x00, 0x40, 0x00, 0x36, 0x84, 0xce, 0x18, 0xac, 0x19, 0x09, 0xcc, 0xac, 0x1d, + 0x14, 0x0f, 0x22, 0xb8, 0x27, 0x0f, 0xb6, 0x96, 0xb0, 0x9e, 0xfa, 0x49, 0x94, 0x3a, 0x03, 0x00, + 0x00, 0x10, 0xdb, 0x85, 0x60, 0x24, 0x00, 0x00, 0xf4, 0x00, 0x00, 0x00, 0x00, 0x00, + }, []byte{ // SHUTDOWN + 0x00, 0x00, 0x0c, 0x9f, 0xf0, 0x1f, 0x24, 0xbe, 0x05, 0x27, 0x0b, 0x17, 0x08, 0x00, 0x45, 0x02, + 0x00, 0x28, 0x00, 0x00, 0x40, 0x00, 0x40, 0x84, 0xc4, 0x3e, 0xac, 0x1d, 0x14, 0x0f, 0xac, 0x19, + 0x09, 0xcc, 0x27, 0x0f, 0x22, 0xb8, 0x32, 0x80, 0xfb, 0x42, 0x3f, 0x29, 0x59, 0x23, 0x07, 0x00, + 0x00, 0x08, 0x85, 0x98, 0xb1, 0x25, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + }, []byte{ // SHUTDOWN ACK + 0x24, 0xbe, 0x05, 0x27, 0x0b, 0x17, 0x00, 0x1f, 0xca, 0xb3, 0x76, 0x40, 0x08, 0x00, 0x45, 0x20, + 0x00, 0x24, 0x00, 0x00, 0x40, 0x00, 0x36, 0x84, 0xce, 0x24, 0xac, 0x19, 0x09, 0xcc, 0xac, 0x1d, + 0x14, 0x0f, 0x22, 0xb8, 0x27, 0x0f, 0xb6, 0x96, 0xb0, 0x9e, 0xb2, 0xc8, 0x99, 0x24, 0x08, 0x00, + 0x00, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + }, []byte{ // SHUTDOWN COMPLETE + 0x00, 0x00, 0x0c, 0x9f, 0xf0, 0x1f, 0x24, 0xbe, 0x05, 0x27, 0x0b, 0x17, 0x08, 0x00, 0x45, 0x02, + 0x00, 0x24, 0x00, 0x00, 0x40, 0x00, 0x40, 0x84, 0xc4, 0x42, 0xac, 0x1d, 0x14, 0x0f, 0xac, 0x19, + 0x09, 0xcc, 0x27, 0x0f, 0x22, 0xb8, 0x32, 0x80, 0xfb, 0x42, 0xa8, 0xd1, 0x86, 0x85, 0x0e, 0x00, + 0x00, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + }} + wantLayers := [][]gopacket.LayerType{ + []gopacket.LayerType{LayerTypeSCTPInit}, + []gopacket.LayerType{LayerTypeSCTPInitAck}, + []gopacket.LayerType{LayerTypeSCTPCookieEcho, LayerTypeSCTPData, gopacket.LayerTypePayload}, + []gopacket.LayerType{LayerTypeSCTPCookieAck, LayerTypeSCTPSack}, + []gopacket.LayerType{LayerTypeSCTPData, gopacket.LayerTypePayload}, + []gopacket.LayerType{LayerTypeSCTPSack}, + []gopacket.LayerType{LayerTypeSCTPShutdown}, + []gopacket.LayerType{LayerTypeSCTPShutdownAck}, + []gopacket.LayerType{LayerTypeSCTPShutdownComplete}, + } + for i, data := range sctpPackets { + p := gopacket.NewPacket(data, LinkTypeEthernet, testDecodeOptions) + for _, typ := range wantLayers[i] { + if p.Layer(typ) == nil { + t.Errorf("Packet %d missing layer type %v, got:", i, typ) + for _, layer := range p.Layers() { + t.Errorf("\t%v", layer.LayerType()) + } + if p.ErrorLayer() != nil { + t.Error("\tPacket layer error:", p.ErrorLayer().Error()) + } + } + } + // Test re-serialization. + testSerializationWithOpts(t, p, data, gopacket.SerializeOptions{FixLengths: true, ComputeChecksums: true}) + } +} + +func TestDecodeCiscoDiscovery(t *testing.T) { + // http://wiki.wireshark.org/SampleCaptures?action=AttachFile&do=get&target=cdp_v2.pcap + data := []byte{ + 0x01, 0x00, 0x0c, 0xcc, 0xcc, 0xcc, 0x00, 0x0b, 0xbe, 0x18, 0x9a, 0x41, 0x01, 0xc3, 0xaa, 0xaa, + 0x03, 0x00, 0x00, 0x0c, 0x20, 0x00, 0x02, 0xb4, 0x09, 0xa0, 0x00, 0x01, 0x00, 0x0c, 0x6d, 0x79, + 0x73, 0x77, 0x69, 0x74, 0x63, 0x68, 0x00, 0x02, 0x00, 0x11, 0x00, 0x00, 0x00, 0x01, 0x01, 0x01, + 0xcc, 0x00, 0x04, 0xc0, 0xa8, 0x00, 0xfd, 0x00, 0x03, 0x00, 0x13, 0x46, 0x61, 0x73, 0x74, 0x45, + 0x74, 0x68, 0x65, 0x72, 0x6e, 0x65, 0x74, 0x30, 0x2f, 0x31, 0x00, 0x04, 0x00, 0x08, 0x00, 0x00, + 0x00, 0x28, 0x00, 0x05, 0x01, 0x14, 0x43, 0x69, 0x73, 0x63, 0x6f, 0x20, 0x49, 0x6e, 0x74, 0x65, + 0x72, 0x6e, 0x65, 0x74, 0x77, 0x6f, 0x72, 0x6b, 0x20, 0x4f, 0x70, 0x65, 0x72, 0x61, 0x74, 0x69, + 0x6e, 0x67, 0x20, 0x53, 0x79, 0x73, 0x74, 0x65, 0x6d, 0x20, 0x53, 0x6f, 0x66, 0x74, 0x77, 0x61, + 0x72, 0x65, 0x20, 0x0a, 0x49, 0x4f, 0x53, 0x20, 0x28, 0x74, 0x6d, 0x29, 0x20, 0x43, 0x32, 0x39, + 0x35, 0x30, 0x20, 0x53, 0x6f, 0x66, 0x74, 0x77, 0x61, 0x72, 0x65, 0x20, 0x28, 0x43, 0x32, 0x39, + 0x35, 0x30, 0x2d, 0x49, 0x36, 0x4b, 0x32, 0x4c, 0x32, 0x51, 0x34, 0x2d, 0x4d, 0x29, 0x2c, 0x20, + 0x56, 0x65, 0x72, 0x73, 0x69, 0x6f, 0x6e, 0x20, 0x31, 0x32, 0x2e, 0x31, 0x28, 0x32, 0x32, 0x29, + 0x45, 0x41, 0x31, 0x34, 0x2c, 0x20, 0x52, 0x45, 0x4c, 0x45, 0x41, 0x53, 0x45, 0x20, 0x53, 0x4f, + 0x46, 0x54, 0x57, 0x41, 0x52, 0x45, 0x20, 0x28, 0x66, 0x63, 0x31, 0x29, 0x0a, 0x54, 0x65, 0x63, + 0x68, 0x6e, 0x69, 0x63, 0x61, 0x6c, 0x20, 0x53, 0x75, 0x70, 0x70, 0x6f, 0x72, 0x74, 0x3a, 0x20, + 0x68, 0x74, 0x74, 0x70, 0x3a, 0x2f, 0x2f, 0x77, 0x77, 0x77, 0x2e, 0x63, 0x69, 0x73, 0x63, 0x6f, + 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x74, 0x65, 0x63, 0x68, 0x73, 0x75, 0x70, 0x70, 0x6f, 0x72, 0x74, + 0x0a, 0x43, 0x6f, 0x70, 0x79, 0x72, 0x69, 0x67, 0x68, 0x74, 0x20, 0x28, 0x63, 0x29, 0x20, 0x31, + 0x39, 0x38, 0x36, 0x2d, 0x32, 0x30, 0x31, 0x30, 0x20, 0x62, 0x79, 0x20, 0x63, 0x69, 0x73, 0x63, + 0x6f, 0x20, 0x53, 0x79, 0x73, 0x74, 0x65, 0x6d, 0x73, 0x2c, 0x20, 0x49, 0x6e, 0x63, 0x2e, 0x0a, + 0x43, 0x6f, 0x6d, 0x70, 0x69, 0x6c, 0x65, 0x64, 0x20, 0x54, 0x75, 0x65, 0x20, 0x32, 0x36, 0x2d, + 0x4f, 0x63, 0x74, 0x2d, 0x31, 0x30, 0x20, 0x31, 0x30, 0x3a, 0x33, 0x35, 0x20, 0x62, 0x79, 0x20, + 0x6e, 0x62, 0x75, 0x72, 0x72, 0x61, 0x00, 0x06, 0x00, 0x15, 0x63, 0x69, 0x73, 0x63, 0x6f, 0x20, + 0x57, 0x53, 0x2d, 0x43, 0x32, 0x39, 0x35, 0x30, 0x2d, 0x31, 0x32, 0x00, 0x08, 0x00, 0x24, 0x00, + 0x00, 0x0c, 0x01, 0x12, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0x01, 0x02, 0x20, 0xff, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0b, 0xbe, 0x18, 0x9a, 0x40, 0xff, 0x00, 0x00, 0x00, + 0x09, 0x00, 0x0c, 0x4d, 0x59, 0x44, 0x4f, 0x4d, 0x41, 0x49, 0x4e, 0x00, 0x0a, 0x00, 0x06, 0x00, + 0x01, 0x00, 0x0b, 0x00, 0x05, 0x01, 0x00, 0x12, 0x00, 0x05, 0x00, 0x00, 0x13, 0x00, 0x05, 0x00, + 0x00, 0x16, 0x00, 0x11, 0x00, 0x00, 0x00, 0x01, 0x01, 0x01, 0xcc, 0x00, 0x04, 0xc0, 0xa8, 0x00, + 0xfd, + } + p := gopacket.NewPacket(data, LinkTypeEthernet, testDecodeOptions) + wantLayers := []gopacket.LayerType{LayerTypeEthernet, LayerTypeLLC, LayerTypeSNAP, LayerTypeCiscoDiscovery, LayerTypeCiscoDiscoveryInfo} + checkLayers(p, wantLayers, t) + + want := &CiscoDiscoveryInfo{ + CDPHello: CDPHello{ + OUI: []byte{0, 0, 12}, + ProtocolID: 274, + ClusterMaster: []byte{0, 0, 0, 0}, + Unknown1: []byte{255, 255, 255, 255}, + Version: 1, + SubVersion: 2, + Status: 32, + Unknown2: 255, + ClusterCommander: net.HardwareAddr{0, 0, 0, 0, 0, 0}, + SwitchMAC: net.HardwareAddr{0, 0x0b, 0xbe, 0x18, 0x9a, 0x40}, + Unknown3: 255, + ManagementVLAN: 0, + }, + DeviceID: "myswitch", + Addresses: []net.IP{net.IPv4(192, 168, 0, 253)}, + PortID: "FastEthernet0/1", + Capabilities: CDPCapabilities{false, false, false, true, false, true, false, false, false}, + Version: "Cisco Internetwork Operating System Software \nIOS (tm) C2950 Software (C2950-I6K2L2Q4-M), Version 12.1(22)EA14, RELEASE SOFTWARE (fc1)\nTechnical Support: http://www.cisco.com/techsupport\nCopyright (c) 1986-2010 by cisco Systems, Inc.\nCompiled Tue 26-Oct-10 10:35 by nburra", + Platform: "cisco WS-C2950-12", + VTPDomain: "MYDOMAIN", + NativeVLAN: 1, + FullDuplex: true, + MgmtAddresses: []net.IP{net.IPv4(192, 168, 0, 253)}, + BaseLayer: BaseLayer{Contents: data[26:]}, + } + cdpL := p.Layer(LayerTypeCiscoDiscoveryInfo) + info, _ := cdpL.(*CiscoDiscoveryInfo) + if !reflect.DeepEqual(info, want) { + t.Errorf("Values mismatch, \ngot %#v\nwant %#v\n", info, want) + } +} + +func TestDecodeLinkLayerDiscovery(t *testing.T) { + // http://wiki.wireshark.org/SampleCaptures?action=AttachFile&do=get&target=lldp.detailed.pcap + data := []byte{ + 0x01, 0x80, 0xc2, 0x00, 0x00, 0x0e, 0x00, 0x01, 0x30, 0xf9, 0xad, 0xa0, + 0x88, 0xcc, 0x02, 0x07, 0x04, 0x00, 0x01, 0x30, 0xf9, 0xad, 0xa0, 0x04, + 0x04, 0x05, 0x31, 0x2f, 0x31, 0x06, 0x02, 0x00, 0x78, 0x08, 0x17, 0x53, + 0x75, 0x6d, 0x6d, 0x69, 0x74, 0x33, 0x30, 0x30, 0x2d, 0x34, 0x38, 0x2d, + 0x50, 0x6f, 0x72, 0x74, 0x20, 0x31, 0x30, 0x30, 0x31, 0x00, 0x0a, 0x0d, + 0x53, 0x75, 0x6d, 0x6d, 0x69, 0x74, 0x33, 0x30, 0x30, 0x2d, 0x34, 0x38, + 0x00, 0x0c, 0x4c, 0x53, 0x75, 0x6d, 0x6d, 0x69, 0x74, 0x33, 0x30, 0x30, + 0x2d, 0x34, 0x38, 0x20, 0x2d, 0x20, 0x56, 0x65, 0x72, 0x73, 0x69, 0x6f, + 0x6e, 0x20, 0x37, 0x2e, 0x34, 0x65, 0x2e, 0x31, 0x20, 0x28, 0x42, 0x75, + 0x69, 0x6c, 0x64, 0x20, 0x35, 0x29, 0x20, 0x62, 0x79, 0x20, 0x52, 0x65, + 0x6c, 0x65, 0x61, 0x73, 0x65, 0x5f, 0x4d, 0x61, 0x73, 0x74, 0x65, 0x72, + 0x20, 0x30, 0x35, 0x2f, 0x32, 0x37, 0x2f, 0x30, 0x35, 0x20, 0x30, 0x34, + 0x3a, 0x35, 0x33, 0x3a, 0x31, 0x31, 0x00, 0x0e, 0x04, 0x00, 0x14, 0x00, + 0x14, 0x10, 0x0e, 0x07, 0x06, 0x00, 0x01, 0x30, 0xf9, 0xad, 0xa0, 0x02, + 0x00, 0x00, 0x03, 0xe9, 0x00, 0xfe, 0x07, 0x00, 0x12, 0x0f, 0x02, 0x07, + 0x01, 0x00, 0xfe, 0x09, 0x00, 0x12, 0x0f, 0x01, 0x03, 0x6c, 0x00, 0x00, + 0x10, 0xfe, 0x09, 0x00, 0x12, 0x0f, 0x03, 0x01, 0x00, 0x00, 0x00, 0x00, + 0xfe, 0x06, 0x00, 0x12, 0x0f, 0x04, 0x05, 0xf2, 0xfe, 0x06, 0x00, 0x80, + 0xc2, 0x01, 0x01, 0xe8, 0xfe, 0x07, 0x00, 0x80, 0xc2, 0x02, 0x01, 0x00, + 0x00, 0xfe, 0x17, 0x00, 0x80, 0xc2, 0x03, 0x01, 0xe8, 0x10, 0x76, 0x32, + 0x2d, 0x30, 0x34, 0x38, 0x38, 0x2d, 0x30, 0x33, 0x2d, 0x30, 0x35, 0x30, + 0x35, 0x00, 0xfe, 0x05, 0x00, 0x80, 0xc2, 0x04, 0x00, 0x00, 0x00, + } + + p := gopacket.NewPacket(data, LinkTypeEthernet, testDecodeOptions) + wantLayers := []gopacket.LayerType{LayerTypeEthernet, LayerTypeLinkLayerDiscovery, LayerTypeLinkLayerDiscoveryInfo} + checkLayers(p, wantLayers, t) + lldpL := p.Layer(LayerTypeLinkLayerDiscovery) + lldp := lldpL.(*LinkLayerDiscovery) + want := &LinkLayerDiscovery{ + ChassisID: LLDPChassisID{LLDPChassisIDSubTypeMACAddr, []byte{0x00, 0x01, 0x30, 0xf9, 0xad, 0xa0}}, + PortID: LLDPPortID{LLDPPortIDSubtypeIfaceName, []byte("1/1")}, + TTL: 120, + BaseLayer: BaseLayer{Contents: data[14:]}, + } + lldp.Values = nil // test these in next stage + if !reflect.DeepEqual(lldp, want) { + t.Errorf("Values mismatch, \ngot %#v\nwant %#v\n", lldp, want) + } + + infoL := p.Layer(LayerTypeLinkLayerDiscoveryInfo) + info := infoL.(*LinkLayerDiscoveryInfo) + wantinfo := &LinkLayerDiscoveryInfo{ + PortDescription: "Summit300-48-Port 1001\x00", + SysName: "Summit300-48\x00", + SysDescription: "Summit300-48 - Version 7.4e.1 (Build 5) by Release_Master 05/27/05 04:53:11\x00", + SysCapabilities: LLDPSysCapabilities{ + SystemCap: LLDPCapabilities{Bridge: true, Router: true}, + EnabledCap: LLDPCapabilities{Bridge: true, Router: true}, + }, + MgmtAddress: LLDPMgmtAddress{IANAAddressFamily802, []byte{0x00, 0x01, 0x30, 0xf9, 0xad, 0xa0}, LLDPInterfaceSubtypeifIndex, 1001, ""}, + OrgTLVs: []LLDPOrgSpecificTLV{ + LLDPOrgSpecificTLV{OUI: 0x120f, SubType: 0x2, Info: []uint8{0x7, 0x1, 0x0}}, + LLDPOrgSpecificTLV{OUI: 0x120f, SubType: 0x1, Info: []uint8{0x3, 0x6c, 0x0, 0x0, 0x10}}, + LLDPOrgSpecificTLV{OUI: 0x120f, SubType: 0x3, Info: []uint8{0x1, 0x0, 0x0, 0x0, 0x0}}, + LLDPOrgSpecificTLV{OUI: 0x120f, SubType: 0x4, Info: []uint8{0x5, 0xf2}}, + LLDPOrgSpecificTLV{OUI: 0x80c2, SubType: 0x1, Info: []uint8{0x1, 0xe8}}, + LLDPOrgSpecificTLV{OUI: 0x80c2, SubType: 0x2, Info: []uint8{0x1, 0x0, 0x0}}, + LLDPOrgSpecificTLV{OUI: 0x80c2, SubType: 0x3, Info: []uint8{0x1, 0xe8, 0x10, 0x76, 0x32, 0x2d, 0x30, 0x34, 0x38, 0x38, 0x2d, 0x30, 0x33, 0x2d, 0x30, 0x35, 0x30, 0x35, 0x0}}, + LLDPOrgSpecificTLV{OUI: 0x80c2, SubType: 0x4, Info: []uint8{0x0}}, + }, + Unknown: nil, + } + if !reflect.DeepEqual(info, wantinfo) { + t.Errorf("Values mismatch, \ngot %#v\nwant %#v\n", info, wantinfo) + } + info8021, err := info.Decode8021() + if err != nil { + t.Errorf("8021 Values decode error: %v", err) + } + want8021 := LLDPInfo8021{ + PVID: 488, + PPVIDs: []PortProtocolVLANID{PortProtocolVLANID{false, false, 0}}, + VLANNames: []VLANName{VLANName{488, "v2-0488-03-0505\x00"}}, + ProtocolIdentities: nil, + VIDUsageDigest: 0, + ManagementVID: 0, + LinkAggregation: LLDPLinkAggregation{false, false, 0}, + } + if !reflect.DeepEqual(info8021, want8021) { + t.Errorf("Values mismatch, \ngot %#v\nwant %#v\n", info8021, want8021) + } + info8023, err := info.Decode8023() + if err != nil { + t.Errorf("8023 Values decode error: %v", err) + } + want8023 := LLDPInfo8023{ + LinkAggregation: LLDPLinkAggregation{true, false, 0}, + MACPHYConfigStatus: LLDPMACPHYConfigStatus{true, true, 0x6c00, 0x0010}, + PowerViaMDI: LLDPPowerViaMDI8023{true, true, true, false, 1, 0, 0, 0, 0, 0, 0}, + MTU: 1522, + } + + if !reflect.DeepEqual(info8023, want8023) { + t.Errorf("Values mismatch, \ngot %#v\nwant %#v\n", info8023, want8023) + } + + // http://wiki.wireshark.org/SampleCaptures?action=AttachFile&do=get&target=lldpmed_civicloc.pcap + data = []byte{ + 0x01, 0x80, 0xc2, 0x00, 0x00, 0x0e, 0x00, 0x13, 0x21, 0x57, 0xca, 0x7f, + 0x88, 0xcc, 0x02, 0x07, 0x04, 0x00, 0x13, 0x21, 0x57, 0xca, 0x40, 0x04, + 0x02, 0x07, 0x31, 0x06, 0x02, 0x00, 0x78, 0x08, 0x01, 0x31, 0x0a, 0x1a, + 0x50, 0x72, 0x6f, 0x43, 0x75, 0x72, 0x76, 0x65, 0x20, 0x53, 0x77, 0x69, + 0x74, 0x63, 0x68, 0x20, 0x32, 0x36, 0x30, 0x30, 0x2d, 0x38, 0x2d, 0x50, + 0x57, 0x52, 0x0c, 0x5f, 0x50, 0x72, 0x6f, 0x43, 0x75, 0x72, 0x76, 0x65, + 0x20, 0x4a, 0x38, 0x37, 0x36, 0x32, 0x41, 0x20, 0x53, 0x77, 0x69, 0x74, + 0x63, 0x68, 0x20, 0x32, 0x36, 0x30, 0x30, 0x2d, 0x38, 0x2d, 0x50, 0x57, + 0x52, 0x2c, 0x20, 0x72, 0x65, 0x76, 0x69, 0x73, 0x69, 0x6f, 0x6e, 0x20, + 0x48, 0x2e, 0x30, 0x38, 0x2e, 0x38, 0x39, 0x2c, 0x20, 0x52, 0x4f, 0x4d, + 0x20, 0x48, 0x2e, 0x30, 0x38, 0x2e, 0x35, 0x58, 0x20, 0x28, 0x2f, 0x73, + 0x77, 0x2f, 0x63, 0x6f, 0x64, 0x65, 0x2f, 0x62, 0x75, 0x69, 0x6c, 0x64, + 0x2f, 0x66, 0x69, 0x73, 0x68, 0x28, 0x74, 0x73, 0x5f, 0x30, 0x38, 0x5f, + 0x35, 0x29, 0x29, 0x0e, 0x04, 0x00, 0x14, 0x00, 0x04, 0x10, 0x0c, 0x05, + 0x01, 0x0f, 0xff, 0x7a, 0x94, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfe, + 0x09, 0x00, 0x12, 0x0f, 0x01, 0x03, 0x6c, 0x00, 0x00, 0x10, 0xfe, 0x07, + 0x00, 0x12, 0xbb, 0x01, 0x00, 0x0f, 0x04, 0xfe, 0x08, 0x00, 0x12, 0xbb, + 0x02, 0x01, 0x40, 0x65, 0xae, 0xfe, 0x2e, 0x00, 0x12, 0xbb, 0x03, 0x02, + 0x28, 0x02, 0x55, 0x53, 0x01, 0x02, 0x43, 0x41, 0x03, 0x09, 0x52, 0x6f, + 0x73, 0x65, 0x76, 0x69, 0x6c, 0x6c, 0x65, 0x06, 0x09, 0x46, 0x6f, 0x6f, + 0x74, 0x68, 0x69, 0x6c, 0x6c, 0x73, 0x13, 0x04, 0x38, 0x30, 0x30, 0x30, + 0x1a, 0x03, 0x52, 0x33, 0x4c, 0xfe, 0x07, 0x00, 0x12, 0xbb, 0x04, 0x03, + 0x00, 0x41, 0x00, 0x00, + } + + p = gopacket.NewPacket(data, LinkTypeEthernet, testDecodeOptions) + wantLayers = []gopacket.LayerType{LayerTypeEthernet, LayerTypeLinkLayerDiscovery, LayerTypeLinkLayerDiscoveryInfo} + checkLayers(p, wantLayers, t) + lldpL = p.Layer(LayerTypeLinkLayerDiscovery) + lldp = lldpL.(*LinkLayerDiscovery) + want = &LinkLayerDiscovery{ + ChassisID: LLDPChassisID{LLDPChassisIDSubTypeMACAddr, []byte{0x00, 0x13, 0x21, 0x57, 0xca, 0x40}}, + PortID: LLDPPortID{LLDPPortIDSubtypeLocal, []byte("1")}, + TTL: 120, + BaseLayer: BaseLayer{Contents: data[14:]}, + } + lldp.Values = nil // test these in next stage + if !reflect.DeepEqual(lldp, want) { + t.Errorf("Values mismatch, \ngot %#v\nwant %#v\n", lldp, want) + } + + infoL = p.Layer(LayerTypeLinkLayerDiscoveryInfo) + info = infoL.(*LinkLayerDiscoveryInfo) + wantinfo = &LinkLayerDiscoveryInfo{ + PortDescription: "1", + SysName: "ProCurve Switch 2600-8-PWR", + SysDescription: "ProCurve J8762A Switch 2600-8-PWR, revision H.08.89, ROM H.08.5X (/sw/code/build/fish(ts_08_5))", + SysCapabilities: LLDPSysCapabilities{ + SystemCap: LLDPCapabilities{Bridge: true, Router: true}, + EnabledCap: LLDPCapabilities{Bridge: true}, + }, + MgmtAddress: LLDPMgmtAddress{IANAAddressFamilyIPV4, []byte{0x0f, 0xff, 0x7a, 0x94}, LLDPInterfaceSubtypeifIndex, 0, ""}, + OrgTLVs: []LLDPOrgSpecificTLV{ + LLDPOrgSpecificTLV{OUI: 0x120f, SubType: 0x1, Info: []uint8{0x3, 0x6c, 0x0, 0x0, 0x10}}, + LLDPOrgSpecificTLV{OUI: 0x12bb, SubType: 0x1, Info: []uint8{0x0, 0xf, 0x4}}, + LLDPOrgSpecificTLV{OUI: 0x12bb, SubType: 0x2, Info: []uint8{0x1, 0x40, 0x65, 0xae}}, + LLDPOrgSpecificTLV{OUI: 0x12bb, SubType: 0x3, Info: []uint8{0x2, 0x28, 0x2, 0x55, 0x53, 0x1, 0x2, 0x43, 0x41, 0x3, 0x9, 0x52, 0x6f, 0x73, 0x65, 0x76, 0x69, 0x6c, 0x6c, 0x65, 0x6, 0x9, 0x46, 0x6f, 0x6f, 0x74, 0x68, 0x69, 0x6c, 0x6c, 0x73, 0x13, 0x4, 0x38, 0x30, 0x30, 0x30, 0x1a, 0x3, 0x52, 0x33, 0x4c}}, + LLDPOrgSpecificTLV{OUI: 0x12bb, SubType: 0x4, Info: []uint8{0x3, 0x0, 0x41}}, + }, + Unknown: nil, + } + if !reflect.DeepEqual(info, wantinfo) { + t.Errorf("Values mismatch, \ngot %#v\nwant %#v\n", info, wantinfo) + } + info8023, err = info.Decode8023() + if err != nil { + t.Errorf("8023 Values decode error: %v", err) + } + want8023 = LLDPInfo8023{ + MACPHYConfigStatus: LLDPMACPHYConfigStatus{true, true, 0x6c00, 0x0010}, + } + + if !reflect.DeepEqual(info8023, want8023) { + t.Errorf("Values mismatch, \ngot %#v\nwant %#v\n", info8023, want8023) + } + + infoMedia, err := info.DecodeMedia() + if err != nil { + t.Errorf("8023 Values decode error: %v", err) + } + wantMedia := LLDPInfoMedia{ + MediaCapabilities: LLDPMediaCapabilities{true, true, true, true, false, false, LLDPMediaClassNetwork}, + NetworkPolicy: LLDPNetworkPolicy{LLDPAppTypeVoice, true, true, 50, 6, 46}, + Location: LLDPLocation{Format: LLDPLocationFormatAddress, Address: LLDPLocationAddress{ + What: LLDPLocationAddressWhatClient, + CountryCode: "US", + AddressLines: []LLDPLocationAddressLine{ + LLDPLocationAddressLine{LLDPLocationAddressTypeNational, "CA"}, + LLDPLocationAddressLine{LLDPLocationAddressTypeCity, "Roseville"}, + LLDPLocationAddressLine{LLDPLocationAddressTypeStreet, "Foothills"}, + LLDPLocationAddressLine{LLDPLocationAddressTypeHouseNum, "8000"}, + LLDPLocationAddressLine{LLDPLocationAddressTypeUnit, "R3L"}, + }, + }}, + PowerViaMDI: LLDPPowerViaMDI{0, 0, LLDPPowerPriorityLow, 6500}, + } + + if !reflect.DeepEqual(infoMedia, wantMedia) { + t.Errorf("Values mismatch, \ngot %#v\nwant %#v\n", infoMedia, wantMedia) + } + +} + +func TestDecodeNortelDiscovery(t *testing.T) { + // http://www.thetechfirm.com/packets/nortel_btdp/btdp_nai.enc + data := []byte{ + 0x01, 0x00, 0x81, 0x00, 0x01, 0x00, 0x00, 0x04, 0x38, 0xe0, 0xcc, 0xde, + 0x00, 0x13, 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x81, 0x01, 0xa2, 0xac, 0x13, + 0x58, 0x03, 0x00, 0x04, 0x15, 0x30, 0x0c, 0x02, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x04, 0x38, 0xe0, 0xcc, 0xde, 0x80, 0x6a, 0x00, 0x01, 0x14, 0x00, + 0x02, 0x00, 0x0f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + } + p := gopacket.NewPacket(data, LinkTypeEthernet, testDecodeOptions) + wantLayers := []gopacket.LayerType{LayerTypeEthernet, LayerTypeLLC, LayerTypeSNAP, LayerTypeNortelDiscovery} + checkLayers(p, wantLayers, t) + + want := &NortelDiscovery{ + IPAddress: []byte{172, 19, 88, 3}, + SegmentID: []byte{0x00, 0x04, 0x15}, + Chassis: NDPChassisBayStack450101001000Switches, + Backplane: NDPBackplaneEthernetFastEthernetGigabitEthernet, + State: NDPStateHeartbeat, + NumLinks: 0, + } + ndpL := p.Layer(LayerTypeNortelDiscovery) + info, _ := ndpL.(*NortelDiscovery) + if !reflect.DeepEqual(info, want) { + t.Errorf("Values mismatch, \ngot %#v\nwant %#v\n", info, want) + } +} + +func TestDecodeIPv6Jumbogram(t *testing.T) { + // Haven't found any of these in the wild or on example pcaps online, so had + // to generate one myself via scapy. Unfortunately, scapy can only + // str(packet) for packets with length < 65536, due to limitations in python's + // struct library, so I generated the header with: + // Ether() / IPv6(src='::1', dst='::2') / IPv6ExtHdrHopByHop(options=[Jumbo(jumboplen=70000)]) / TCP(sport=8888, dport=80) + // then added the payload manually ("payload" * 9996). The checksums here are + // not correct, but we don't check, so who cares ;) + dataStr := "\x00\x1f\xca\xb3v@$\xbe\x05'\x0b\x17\x86\xdd`\x00\x00\x00\x00\x00\x00@\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x06\x00\xc2\x04\x00\x01\x11p\"\xb8\x00P\x00\x00\x00\x00\x00\x00\x00\x00P\x02 \x00l\xd8\x00\x00" + payload := strings.Repeat("payload", 9996) + data := []byte(dataStr + payload) + p := gopacket.NewPacket(data, LinkTypeEthernet, testDecodeOptions) + checkLayers(p, []gopacket.LayerType{LayerTypeEthernet, LayerTypeIPv6, LayerTypeIPv6HopByHop, LayerTypeTCP, gopacket.LayerTypePayload}, t) + if p.ApplicationLayer() == nil { + t.Error("Packet has no application layer") + } else if string(p.ApplicationLayer().Payload()) != payload { + t.Errorf("Jumbogram payload wrong") + } + // Check truncated for jumbograms + data = data[:len(data)-1] + p = gopacket.NewPacket(data, LinkTypeEthernet, testDecodeOptions) + checkLayers(p, []gopacket.LayerType{LayerTypeEthernet, LayerTypeIPv6, LayerTypeIPv6HopByHop, LayerTypeTCP, gopacket.LayerTypePayload}, t) + if !p.Metadata().Truncated { + t.Error("Jumbogram should be truncated") + } +} + +func TestDecodeUDPPacketTooSmall(t *testing.T) { + data := []byte{ + 0x00, 0x15, 0x2c, 0x9d, 0xcc, 0x00, 0x00, 0x10, 0xdb, 0xff, 0x10, 0x00, 0x81, 0x00, 0x01, 0xf7, + 0x08, 0x00, 0x45, 0x60, 0x00, 0x3c, 0x0f, 0xa9, 0x00, 0x00, 0x6e, 0x11, 0x01, 0x0a, 0x47, 0xe6, + 0xee, 0x2e, 0xac, 0x16, 0x59, 0x73, 0x00, 0x50, 0x00, 0x50, 0x00, 0x28, 0x4d, 0xad, 0x00, 0x67, + 0x00, 0x01, 0x00, 0x72, 0xd5, 0xc7, 0xf1, 0x07, 0x00, 0x00, 0x01, 0x01, 0x00, 0x0d, 0x00, 0x00, + 0x00, 0x14, 0x00, 0x00, 0x19, 0xba, + } + p := gopacket.NewPacket(data, LinkTypeEthernet, testDecodeOptions) + checkLayers(p, []gopacket.LayerType{LayerTypeEthernet, LayerTypeDot1Q, LayerTypeIPv4, LayerTypeUDP, gopacket.LayerTypePayload}, t) + if !p.Metadata().Truncated { + t.Error("UDP short packet should be truncated") + } +} + +func TestDecodingLayerParserFullTCPPacket(t *testing.T) { + dlp := gopacket.NewDecodingLayerParser(LayerTypeEthernet, &Ethernet{}, &IPv4{}, &TCP{}, &gopacket.Payload{}) + decoded := make([]gopacket.LayerType, 1) + err := dlp.DecodeLayers(testSimpleTCPPacket, &decoded) + if err != nil { + t.Error("Error from dlp parser: ", err) + } + if len(decoded) != 4 { + t.Error("Expected 4 layers parsed, instead got ", len(decoded)) + } +} + +// testICMP is the packet: +// 15:49:15.773265 IP 72.14.222.226 > 172.29.20.15: ICMP host 10.66.73.201 unreachable - admin prohibited filter, length 36 +// 0x0000: 24be 0527 0b17 001f cab3 75c0 0800 4500 $..'......u...E. +// 0x0010: 0038 0000 0000 fc01 d7a7 480e dee2 ac1d .8........H..... +// 0x0020: 140f 030d 946e 0000 0000 4520 004d 0000 .....n....E..M.. +// 0x0030: 4000 3e11 2849 ac1d 140f 0a42 49c9 8ecc @.>.(I.....BI... +// 0x0040: 62e1 0039 769d b..9v. +var testICMP = []byte{ + 0x24, 0xbe, 0x05, 0x27, 0x0b, 0x17, 0x00, 0x1f, 0xca, 0xb3, 0x75, 0xc0, 0x08, 0x00, 0x45, 0x00, + 0x00, 0x38, 0x00, 0x00, 0x00, 0x00, 0xfc, 0x01, 0xd7, 0xa7, 0x48, 0x0e, 0xde, 0xe2, 0xac, 0x1d, + 0x14, 0x0f, 0x03, 0x0d, 0x94, 0x6e, 0x00, 0x00, 0x00, 0x00, 0x45, 0x20, 0x00, 0x4d, 0x00, 0x00, + 0x40, 0x00, 0x3e, 0x11, 0x28, 0x49, 0xac, 0x1d, 0x14, 0x0f, 0x0a, 0x42, 0x49, 0xc9, 0x8e, 0xcc, + 0x62, 0xe1, 0x00, 0x39, 0x76, 0x9d, +} + +func TestICMP(t *testing.T) { + p := gopacket.NewPacket(testICMP, LinkTypeEthernet, testDecodeOptions) + if p.ErrorLayer() != nil { + t.Error("Failed to decode packet:", p.ErrorLayer().Error()) + } + checkLayers(p, []gopacket.LayerType{LayerTypeEthernet, LayerTypeIPv4, LayerTypeICMPv4, gopacket.LayerTypePayload}, t) + testSerialization(t, p, testICMP) +} +func BenchmarkDecodeICMP(b *testing.B) { + for i := 0; i < b.N; i++ { + gopacket.NewPacket(testICMP, LinkTypeEthernet, gopacket.NoCopy) + } +} + +// testICMP6 is the packet: +// 16:17:37.758937 IP6 fe80::21f:caff:feb3:75c0 > 2620:0:1005:0:26be:5ff:fe27:b17: ICMP6, neighbor solicitation, who has 2620:0:1005:0:26be:5ff:fe27:b17, length 32 +// 0x0000: 24be 0527 0b17 001f cab3 75c0 86dd 6e00 $..'......u...n. +// 0x0010: 0000 0020 3aff fe80 0000 0000 0000 021f ....:........... +// 0x0020: caff feb3 75c0 2620 0000 1005 0000 26be ....u.&.......&. +// 0x0030: 05ff fe27 0b17 8700 1eba 0000 0000 2620 ...'..........&. +// 0x0040: 0000 1005 0000 26be 05ff fe27 0b17 0101 ......&....'.... +// 0x0050: 001f cab3 75c0 ....u. +var testICMP6 = []byte{ + 0x24, 0xbe, 0x05, 0x27, 0x0b, 0x17, 0x00, 0x1f, 0xca, 0xb3, 0x75, 0xc0, 0x86, 0xdd, 0x6e, 0x00, + 0x00, 0x00, 0x00, 0x20, 0x3a, 0xff, 0xfe, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x1f, + 0xca, 0xff, 0xfe, 0xb3, 0x75, 0xc0, 0x26, 0x20, 0x00, 0x00, 0x10, 0x05, 0x00, 0x00, 0x26, 0xbe, + 0x05, 0xff, 0xfe, 0x27, 0x0b, 0x17, 0x87, 0x00, 0x1e, 0xba, 0x00, 0x00, 0x00, 0x00, 0x26, 0x20, + 0x00, 0x00, 0x10, 0x05, 0x00, 0x00, 0x26, 0xbe, 0x05, 0xff, 0xfe, 0x27, 0x0b, 0x17, 0x01, 0x01, + 0x00, 0x1f, 0xca, 0xb3, 0x75, 0xc0, +} + +func TestICMP6(t *testing.T) { + p := gopacket.NewPacket(testICMP6, LinkTypeEthernet, testDecodeOptions) + if p.ErrorLayer() != nil { + t.Error("Failed to decode packet:", p.ErrorLayer().Error()) + } + checkLayers(p, []gopacket.LayerType{LayerTypeEthernet, LayerTypeIPv6, LayerTypeICMPv6, gopacket.LayerTypePayload}, t) + testSerialization(t, p, testICMP6) +} +func BenchmarkDecodeICMP6(b *testing.B) { + for i := 0; i < b.N; i++ { + gopacket.NewPacket(testICMP6, LinkTypeEthernet, gopacket.NoCopy) + } +} + +// testMPLS is the packet: +// 12:48:57.201014 MPLS (label 29, exp 0, [S], ttl 255) IP 10.1.2.1 > 10.34.0.1: ICMP echo request, id 2618, seq 1579, length 80 +// 0x0000: 0030 96e6 fc39 0030 9605 2838 8847 0001 .0...9.0..(8.G.. +// 0x0010: d1ff 4500 0064 000b 0000 ff01 a569 0a01 ..E..d.......i.. +// 0x0020: 0201 0a22 0001 0800 3a76 0a3a 062b 0000 ..."....:v.:.+.. +// 0x0030: 0000 001f 3350 abcd abcd abcd abcd abcd ....3P.......... +// 0x0040: abcd abcd abcd abcd abcd abcd abcd abcd ................ +// 0x0050: abcd abcd abcd abcd abcd abcd abcd abcd ................ +// 0x0060: abcd abcd abcd abcd abcd abcd abcd abcd ................ +// 0x0070: abcd abcd abcd ...... +var testMPLS = []byte{ + 0x00, 0x30, 0x96, 0xe6, 0xfc, 0x39, 0x00, 0x30, 0x96, 0x05, 0x28, 0x38, 0x88, 0x47, 0x00, 0x01, + 0xd1, 0xff, 0x45, 0x00, 0x00, 0x64, 0x00, 0x0b, 0x00, 0x00, 0xff, 0x01, 0xa5, 0x69, 0x0a, 0x01, + 0x02, 0x01, 0x0a, 0x22, 0x00, 0x01, 0x08, 0x00, 0x3a, 0x76, 0x0a, 0x3a, 0x06, 0x2b, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x1f, 0x33, 0x50, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, + 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, + 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, + 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, + 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, +} + +func TestMPLS(t *testing.T) { + p := gopacket.NewPacket(testMPLS, LinkTypeEthernet, testDecodeOptions) + if p.ErrorLayer() != nil { + t.Error("Failed to decode packet:", p.ErrorLayer().Error()) + } + checkLayers(p, []gopacket.LayerType{LayerTypeEthernet, LayerTypeMPLS, LayerTypeIPv4, LayerTypeICMPv4, gopacket.LayerTypePayload}, t) + testSerialization(t, p, testMPLS) +} +func BenchmarkDecodeMPLS(b *testing.B) { + for i := 0; i < b.N; i++ { + gopacket.NewPacket(testMPLS, LinkTypeEthernet, gopacket.NoCopy) + } +} + +// testPPPoEICMPv6 is the packet: +// 07:43:31.091560 PPPoE [ses 0x11] IP6 fe80::c801:eff:fe88:8 > ff02::1: ICMP6, neighbor advertisement, tgt is fe80::c801:eff:fe88:8, length 24 +// 0x0000: cc05 0e88 0000 ca01 0e88 0006 8864 1100 .............d.. +// 0x0010: 0011 0042 0057 6e00 0000 0018 3aff fe80 ...B.Wn.....:... +// 0x0020: 0000 0000 0000 c801 0eff fe88 0008 ff02 ................ +// 0x0030: 0000 0000 0000 0000 0000 0000 0001 8800 ................ +// 0x0040: 5083 8000 0000 fe80 0000 0000 0000 c801 P............... +// 0x0050: 0eff fe88 0008 ...... +var testPPPoEICMPv6 = []byte{ + 0xcc, 0x05, 0x0e, 0x88, 0x00, 0x00, 0xca, 0x01, 0x0e, 0x88, 0x00, 0x06, 0x88, 0x64, 0x11, 0x00, + 0x00, 0x11, 0x00, 0x42, 0x00, 0x57, 0x6e, 0x00, 0x00, 0x00, 0x00, 0x18, 0x3a, 0xff, 0xfe, 0x80, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xc8, 0x01, 0x0e, 0xff, 0xfe, 0x88, 0x00, 0x08, 0xff, 0x02, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x88, 0x00, + 0x50, 0x83, 0x80, 0x00, 0x00, 0x00, 0xfe, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xc8, 0x01, + 0x0e, 0xff, 0xfe, 0x88, 0x00, 0x08, +} + +func TestPPPoEICMPv6(t *testing.T) { + p := gopacket.NewPacket(testPPPoEICMPv6, LinkTypeEthernet, testDecodeOptions) + if p.ErrorLayer() != nil { + t.Error("Failed to decode packet:", p.ErrorLayer().Error()) + } + checkLayers(p, []gopacket.LayerType{ + LayerTypeEthernet, + LayerTypePPPoE, + LayerTypePPP, + LayerTypeIPv6, + LayerTypeICMPv6, + gopacket.LayerTypePayload, + }, t) + testSerialization(t, p, testPPPoEICMPv6) +} +func BenchmarkDecodePPPoEICMPv6(b *testing.B) { + for i := 0; i < b.N; i++ { + gopacket.NewPacket(testPPPoEICMPv6, LinkTypeEthernet, gopacket.NoCopy) + } +} + +var testPFLogUDP = []byte{ + 0x3d, 0x02, 0x00, 0x00, 0x65, 0x6e, 0x30, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x6c, 0x6f, 0x67, 0x67, 0x69, 0x6e, 0x67, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xae, 0xff, 0xff, 0xff, 0x7f, + 0xa0, 0x86, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0xc0, 0xb8, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, + 0x45, 0x00, 0x00, 0x2c, 0x02, 0x16, 0x00, 0x00, 0x40, 0x11, 0x4e, 0xb0, 0xac, 0x17, 0xe8, 0xcc, + 0xac, 0x17, 0xe8, 0xff, 0xf0, 0xff, 0x21, 0xa4, 0x00, 0x18, 0x2a, 0x25, 0x50, 0x4e, 0x4a, 0x50, + 0x01, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, +} + +func TestPFLogUDP(t *testing.T) { + p := gopacket.NewPacket(testPFLogUDP, LinkTypePFLog, testDecodeOptions) + if p.ErrorLayer() != nil { + t.Error("Failed to decode packet:", p.ErrorLayer().Error()) + } + checkLayers(p, []gopacket.LayerType{ + LayerTypePFLog, + LayerTypeIPv4, + LayerTypeUDP, + gopacket.LayerTypePayload, + }, t) +} + +func TestRegressionDot1QPriority(t *testing.T) { + d := &Dot1Q{ + Priority: 2, + } + out := gopacket.NewSerializeBuffer() + gopacket.SerializeLayers(out, gopacket.SerializeOptions{}, d) + if err := d.DecodeFromBytes(out.Bytes(), gopacket.NilDecodeFeedback); err != nil { + t.Errorf("could not decode encoded dot1q") + } else if d.Priority != 2 { + t.Errorf("priority mismatch, want 2 got %d", d.Priority) + } +} + +// testPacketMPLSInMPLS is the packet: +// 15:27:44.753678 MPLS (label 18, exp 0, ttl 255) (label 16, exp 0, [S], ttl +// 255) IP 10.31.0.1 > 10.34.0.1: ICMP echo request, id 3941, seq 4768, length +// 80 +// 0x0000: 0030 96e6 fc39 0030 9605 2838 8847 0001 .0...9.0..(8.G.. +// 0x0010: 20ff 0001 01ff 4500 0064 0050 0000 ff01 ......E..d.P.... +// 0x0020: a706 0a1f 0001 0a22 0001 0800 bd11 0f65 .......".......e +// 0x0030: 12a0 0000 0000 0053 9ee0 abcd abcd abcd .......S........ +// 0x0040: abcd abcd abcd abcd abcd abcd abcd abcd ................ +// 0x0050: abcd abcd abcd abcd abcd abcd abcd abcd ................ +// 0x0060: abcd abcd abcd abcd abcd abcd abcd abcd ................ +// 0x0070: abcd abcd abcd abcd abcd .......... +var testPacketMPLSInMPLS = []byte{ + 0x00, 0x30, 0x96, 0xe6, 0xfc, 0x39, 0x00, 0x30, 0x96, 0x05, 0x28, 0x38, 0x88, 0x47, 0x00, 0x01, + 0x20, 0xff, 0x00, 0x01, 0x01, 0xff, 0x45, 0x00, 0x00, 0x64, 0x00, 0x50, 0x00, 0x00, 0xff, 0x01, + 0xa7, 0x06, 0x0a, 0x1f, 0x00, 0x01, 0x0a, 0x22, 0x00, 0x01, 0x08, 0x00, 0xbd, 0x11, 0x0f, 0x65, + 0x12, 0xa0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x53, 0x9e, 0xe0, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, + 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, + 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, + 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, + 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, 0xab, 0xcd, +} + +func TestPacketMPLSInMPLS(t *testing.T) { + p := gopacket.NewPacket(testPacketMPLSInMPLS, LinkTypeEthernet, testDecodeOptions) + if p.ErrorLayer() != nil { + t.Error("Failed to decode packet:", p.ErrorLayer().Error()) + } + checkLayers(p, []gopacket.LayerType{ + LayerTypeEthernet, + LayerTypeMPLS, + LayerTypeMPLS, + LayerTypeIPv4, + LayerTypeICMPv4, + gopacket.LayerTypePayload}, t) +} + +// testPacketIPv4Fragmented is the packet: +// 22:11:26.616090 IP 10.1.1.1.31915 > 129.111.30.27.20197: UDP, length 28 +// 0x0000: 0000 39cf d9cd 0040 33d9 7cfd 0800 4500 ..9....@3.|...E. +// 0x0010: 0038 00f2 2000 4011 af37 0a01 0101 816f .8....@..7.....o +// 0x0020: 1e1b 7cab 4ee5 0024 0000 0000 0000 0000 ..|.N..$........ +// 0x0030: 0000 0000 0000 0000 0000 0000 0000 0000 ................ +// 0x0040: 0000 0000 0000 ...... +var testPacketIPv4Fragmented = []byte{ + 0x00, 0x00, 0x39, 0xcf, 0xd9, 0xcd, 0x00, 0x40, 0x33, 0xd9, 0x7c, 0xfd, 0x08, 0x00, 0x45, 0x00, + 0x00, 0x38, 0x00, 0xf2, 0x20, 0x00, 0x40, 0x11, 0xaf, 0x37, 0x0a, 0x01, 0x01, 0x01, 0x81, 0x6f, + 0x1e, 0x1b, 0x7c, 0xab, 0x4e, 0xe5, 0x00, 0x24, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, +} + +func TestPacketIPv4Fragmented(t *testing.T) { + p := gopacket.NewPacket(testPacketIPv4Fragmented, LinkTypeEthernet, testDecodeOptions) + if p.ErrorLayer() != nil { + t.Error("Failed to decode packet:", p.ErrorLayer().Error()) + } + checkLayers(p, []gopacket.LayerType{LayerTypeEthernet, LayerTypeIPv4, gopacket.LayerTypeFragment}, t) + testSerializationWithOpts(t, p, testPacketIPv4Fragmented, gopacket.SerializeOptions{FixLengths: true, ComputeChecksums: true}) +} + +// TestSCTPChunkBadLength tests for issue #146 +func TestSCTPChunkBadLength(t *testing.T) { + data := []byte( + "0000\xad9$e\x11\xe4\xaeo\b\x00E\x00\x018\xb4\xa3" + + "\x00\x00Y\x84\xc4@\x11gz\xc0\xa8\xee\x01\xc0\xa8" + + "\xeeD\x007le\x03\x01\xc0\f\xdf\b\x01\x00\x00") + + // this panic'd previously due to a zero length chunk getting + // repeatedly read + gopacket.NewPacket(data, LinkTypeEthernet, gopacket.Default) +} + +// TestSTP +func TestSTP(t *testing.T) { + testSTPpacket := []byte{ + 0x01, 0x80, 0xC2, 0x00, 0x00, 0x00, 0x00, 0x1C, 0x0E, 0x87, 0x85, 0x04, 0x00, 0x26, 0x42, 0x42, + 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x64, 0x00, 0x1C, 0x0E, 0x87, 0x78, 0x00, 0x00, 0x00, + 0x00, 0x04, 0x80, 0x64, 0x00, 0x1C, 0x0E, 0x87, 0x85, 0x00, 0x80, 0x04, 0x01, 0x00, 0x14, 0x00, + 0x02, 0x00, 0x0F, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + } + p := gopacket.NewPacket(testSTPpacket, LinkTypeEthernet, testDecodeOptions) + checkLayers(p, []gopacket.LayerType{LayerTypeEthernet, LayerTypeLLC, LayerTypeSTP}, t) +} |