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// Copyright 2012 Google, Inc. 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"
"reflect"
"testing"
)
// testPacketGRE is the packet:
// 15:08:08.003196 IP 192.168.1.1 > 192.168.1.2: GREv0, length 88: IP 172.16.1.1 > 172.16.2.1: ICMP echo request, id 4724, seq 1, length 64
// 0x0000: 3a56 6b69 595e 8e7a 12c3 a971 0800 4500 :VkiY^.z...q..E.
// 0x0010: 006c 843c 4000 402f 32d3 c0a8 0101 c0a8 .l.<@.@/2.......
// 0x0020: 0102 0000 0800 4500 0054 0488 4000 4001 ......E..T..@.@.
// 0x0030: dafe ac10 0101 ac10 0201 0800 82c4 1274 ...............t
// 0x0040: 0001 c892 a354 0000 0000 380c 0000 0000 .....T....8.....
// 0x0050: 0000 1011 1213 1415 1617 1819 1a1b 1c1d ................
// 0x0060: 1e1f 2021 2223 2425 2627 2829 2a2b 2c2d ...!"#$%&'()*+,-
// 0x0070: 2e2f 3031 3233 3435 3637 ./01234567
var testPacketGRE = []byte{
0x3a, 0x56, 0x6b, 0x69, 0x59, 0x5e, 0x8e, 0x7a, 0x12, 0xc3, 0xa9, 0x71, 0x08, 0x00, 0x45, 0x00,
0x00, 0x6c, 0x84, 0x3c, 0x40, 0x00, 0x40, 0x2f, 0x32, 0xd3, 0xc0, 0xa8, 0x01, 0x01, 0xc0, 0xa8,
0x01, 0x02, 0x00, 0x00, 0x08, 0x00, 0x45, 0x00, 0x00, 0x54, 0x04, 0x88, 0x40, 0x00, 0x40, 0x01,
0xda, 0xfe, 0xac, 0x10, 0x01, 0x01, 0xac, 0x10, 0x02, 0x01, 0x08, 0x00, 0x82, 0xc4, 0x12, 0x74,
0x00, 0x01, 0xc8, 0x92, 0xa3, 0x54, 0x00, 0x00, 0x00, 0x00, 0x38, 0x0c, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d,
0x1e, 0x1f, 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d,
0x2e, 0x2f, 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
}
func TestPacketGRE(t *testing.T) {
p := gopacket.NewPacket(testPacketGRE, LinkTypeEthernet, gopacket.Default)
if p.ErrorLayer() != nil {
t.Error("Failed to decode packet:", p.ErrorLayer().Error())
}
checkLayers(p, []gopacket.LayerType{LayerTypeEthernet, LayerTypeIPv4, LayerTypeGRE, LayerTypeIPv4, LayerTypeICMPv4, gopacket.LayerTypePayload}, t)
if got, ok := p.Layer(LayerTypeGRE).(*GRE); ok {
want := &GRE{
BaseLayer: BaseLayer{testPacketGRE[34:38], testPacketGRE[38:]},
Protocol: EthernetTypeIPv4,
}
if !reflect.DeepEqual(want, got) {
t.Errorf("GRE layer mismatch, \nwant %#v\ngot %#v\n", want, got)
}
}
}
func BenchmarkDecodePacketGRE(b *testing.B) {
for i := 0; i < b.N; i++ {
gopacket.NewPacket(testPacketGRE, LinkTypeEthernet, gopacket.NoCopy)
}
}
// testPacketEthernetOverGRE is the packet:
// 11:01:38.124768 IP 192.168.1.1 > 192.168.1.2: GREv0, length 102: IP 172.16.1.1 > 172.16.1.2: ICMP echo request, id 3842, seq 1, length 64
// 0x0000: ea6b 4cd3 5513 d6b9 d880 56ef 0800 4500 .kL.U.....V...E.
// 0x0010: 007a 0acd 4000 402f ac34 c0a8 0101 c0a8 .z..@.@/.4......
// 0x0020: 0102 0000 6558 aa6a 36e6 c630 6e32 3ec7 ....eX.j6..0n2>.
// 0x0030: 9def 0800 4500 0054 d970 4000 4001 0715 ....E..T.p@.@...
// 0x0040: ac10 0101 ac10 0102 0800 3f15 0f02 0001 ..........?.....
// 0x0050: 82d9 b154 0000 0000 b5e6 0100 0000 0000 ...T............
// 0x0060: 1011 1213 1415 1617 1819 1a1b 1c1d 1e1f ................
// 0x0070: 2021 2223 2425 2627 2829 2a2b 2c2d 2e2f .!"#$%&'()*+,-./
// 0x0080: 3031 3233 3435 3637 01234567
var testPacketEthernetOverGRE = []byte{
0xea, 0x6b, 0x4c, 0xd3, 0x55, 0x13, 0xd6, 0xb9, 0xd8, 0x80, 0x56, 0xef, 0x08, 0x00, 0x45, 0x00,
0x00, 0x7a, 0x0a, 0xcd, 0x40, 0x00, 0x40, 0x2f, 0xac, 0x34, 0xc0, 0xa8, 0x01, 0x01, 0xc0, 0xa8,
0x01, 0x02, 0x00, 0x00, 0x65, 0x58, 0xaa, 0x6a, 0x36, 0xe6, 0xc6, 0x30, 0x6e, 0x32, 0x3e, 0xc7,
0x9d, 0xef, 0x08, 0x00, 0x45, 0x00, 0x00, 0x54, 0xd9, 0x70, 0x40, 0x00, 0x40, 0x01, 0x07, 0x15,
0xac, 0x10, 0x01, 0x01, 0xac, 0x10, 0x01, 0x02, 0x08, 0x00, 0x3f, 0x15, 0x0f, 0x02, 0x00, 0x01,
0x82, 0xd9, 0xb1, 0x54, 0x00, 0x00, 0x00, 0x00, 0xb5, 0xe6, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
}
func TestPacketEthernetOverGRE(t *testing.T) {
p := gopacket.NewPacket(testPacketEthernetOverGRE, LinkTypeEthernet, gopacket.Default)
if p.ErrorLayer() != nil {
t.Error("Failed to decode packet:", p.ErrorLayer().Error())
}
checkLayers(p, []gopacket.LayerType{LayerTypeEthernet, LayerTypeIPv4, LayerTypeGRE, LayerTypeEthernet, LayerTypeIPv4, LayerTypeICMPv4, gopacket.LayerTypePayload}, t)
if got, ok := p.Layer(LayerTypeGRE).(*GRE); ok {
want := &GRE{
BaseLayer: BaseLayer{testPacketEthernetOverGRE[34:38], testPacketEthernetOverGRE[38:]},
Protocol: EthernetTypeTransparentEthernetBridging,
}
if !reflect.DeepEqual(want, got) {
t.Errorf("GRE layer mismatch, \nwant %#v\ngot %#v\n", want, got)
}
}
}
func BenchmarkDecodePacketEthernetOverGRE(b *testing.B) {
for i := 0; i < b.N; i++ {
gopacket.NewPacket(testPacketEthernetOverGRE, LinkTypeEthernet, gopacket.NoCopy)
}
}
|
