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// Copyright 2017 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"
)
//******************************************************************************
// checkBFD() uses the bfd.go code to analyse the packet bytes as an BFD Control
// packet and generate an BFD object. It then compares the generated BFD object
// with the one provided and throws an error if there is any difference.
// The desc argument is output with any failure message to identify the test.
func checkBFD(desc string, t *testing.T, packetBytes []byte, pExpectedBFD *BFD) {
// Analyse the packet bytes, yielding a new packet object p.
p := gopacket.NewPacket(packetBytes, LinkTypeEthernet, gopacket.Default)
if p.ErrorLayer() != nil {
t.Errorf("Failed to decode packet %s: %v", desc, p.ErrorLayer().Error())
}
// Ensure that the packet analysis yielded the correct set of layers:
// Link Layer = Ethernet.
// Network Layer = IPv4.
// Transport Layer = UDP.
// Application Layer = BFD.
checkLayers(p, []gopacket.LayerType{
LayerTypeEthernet,
LayerTypeIPv4,
LayerTypeUDP,
LayerTypeBFD}, t)
// Select the Application (BFD) layer.
pResultBFD, ok := p.ApplicationLayer().(*BFD)
if !ok {
t.Error("No BFD layer type found in packet in " + desc + ".")
}
// Compare the generated BFD object with the expected BFD object.
if !reflect.DeepEqual(pResultBFD, pExpectedBFD) {
t.Errorf("BFD packet processing failed for packet "+desc+
":\ngot :\n%#v\n\nwant :\n%#v\n\n", pResultBFD, pExpectedBFD)
}
buf := gopacket.NewSerializeBuffer()
opts := gopacket.SerializeOptions{}
err := pResultBFD.SerializeTo(buf, opts)
if err != nil {
t.Error(err)
}
if !reflect.DeepEqual(pResultBFD.Contents, buf.Bytes()) {
t.Errorf("BFD packet serialization failed for packet "+desc+
":\ngot :\n%+v\n\nwant :\n%+v\n\n", buf.Bytes(), pResultBFD.Contents)
}
}
func TestBFDNoAuth(t *testing.T) {
// This test packet is based off of the first BFD packet in the BFD sample capture
// pcap file bfd-raw-auth-simple.pcap on the Wireshark sample captures page:
//
// https://wiki.wireshark.org/SampleCaptures
// https://wiki.wireshark.org/SampleCaptures?action=AttachFile&do=get&target=bfd-raw-auth-simple.pcap
//
// Changed to remove the authentication header, and adjust all of the lengths
var testPacketBFD = []byte{
0x00, 0x00, 0x01, 0x00, 0x00, 0x01, 0x00, 0x10, 0x94, 0x00, 0x00, 0x02, 0x08, 0x00, 0x45, 0x00,
0x00, 0x3d, 0x00, 0x00, 0x00, 0x00, 0x0a, 0x11, 0x2f, 0x58, 0xc0, 0x55, 0x01, 0x02, 0xc0, 0x00,
0x00, 0x01, 0xc0, 0x00, 0x0e, 0xc8, 0x00, 0x20, 0x72, 0x31, 0x20, 0x40, 0x05, 0x18, 0x00, 0x00,
0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0f, 0x42, 0x40, 0x00, 0x0f, 0x42, 0x40, 0x00, 0x00,
0x00, 0x00, 0x01, 0x4e, 0x0a, 0x90, 0x40,
}
// Assemble the BFD object that we expect to emerge from this test.
pExpectedBFD := &BFD{
BaseLayer: BaseLayer{
Contents: []byte{
0x20, 0x40, 0x05, 0x18, 0x00, 0x00, 0x00, 0x01,
0x00, 0x00, 0x00, 0x00, 0x00, 0x0f, 0x42, 0x40,
0x00, 0x0f, 0x42, 0x40, 0x00, 0x00, 0x00, 0x00,
},
Payload: nil,
},
Version: 1,
Diagnostic: BFDDiagnosticNone,
State: BFDStateDown,
Poll: false,
Final: false,
ControlPlaneIndependent: false,
AuthPresent: false,
Demand: false,
Multipoint: false,
DetectMultiplier: 5,
MyDiscriminator: 1,
YourDiscriminator: 0,
DesiredMinTxInterval: 1000000,
RequiredMinRxInterval: 1000000,
RequiredMinEchoRxInterval: 0,
AuthHeader: nil,
}
checkBFD("testNoAuth", t, testPacketBFD, pExpectedBFD)
}
//******************************************************************************
func TestBFDAuthTypePassword(t *testing.T) {
// This test packet is the first BFD packet in the BFD sample capture
// pcap file bfd-raw-auth-simple.pcap on the Wireshark sample captures page:
//
// https://wiki.wireshark.org/SampleCaptures
// https://wiki.wireshark.org/SampleCaptures?action=AttachFile&do=get&target=bfd-raw-auth-simple.pcap
var testPacketBFD = []byte{
0x00, 0x00, 0x01, 0x00, 0x00, 0x01, 0x00, 0x10, 0x94, 0x00, 0x00, 0x02, 0x08, 0x00, 0x45, 0x00,
0x00, 0x3d, 0x00, 0x00, 0x00, 0x00, 0x0a, 0x11, 0x2f, 0x58, 0xc0, 0x55, 0x01, 0x02, 0xc0, 0x00,
0x00, 0x01, 0xc0, 0x00, 0x0e, 0xc8, 0x00, 0x29, 0x72, 0x31, 0x20, 0x44, 0x05, 0x21, 0x00, 0x00,
0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0f, 0x42, 0x40, 0x00, 0x0f, 0x42, 0x40, 0x00, 0x00,
0x00, 0x00, 0x01, 0x09, 0x02, 0x73, 0x65, 0x63, 0x72, 0x65, 0x74, 0x4e, 0x0a, 0x90, 0x40,
}
// Assemble the BFD object that we expect to emerge from this test.
pExpectedBFD := &BFD{
BaseLayer: BaseLayer{
Contents: []byte{
0x20, 0x44, 0x05, 0x21, 0x00, 0x00, 0x00, 0x01,
0x00, 0x00, 0x00, 0x00, 0x00, 0x0f, 0x42, 0x40,
0x00, 0x0f, 0x42, 0x40, 0x00, 0x00, 0x00, 0x00,
0x01, 0x09, 0x02, 0x73, 0x65, 0x63, 0x72, 0x65,
0x74,
},
Payload: nil,
},
Version: 1,
Diagnostic: BFDDiagnosticNone,
State: BFDStateDown,
Poll: false,
Final: false,
ControlPlaneIndependent: false,
AuthPresent: true,
Demand: false,
Multipoint: false,
DetectMultiplier: 5,
MyDiscriminator: 1,
YourDiscriminator: 0,
DesiredMinTxInterval: 1000000,
RequiredMinRxInterval: 1000000,
RequiredMinEchoRxInterval: 0,
AuthHeader: &BFDAuthHeader{
AuthType: BFDAuthTypePassword,
KeyID: 2,
SequenceNumber: 0,
Data: []byte{'s', 'e', 'c', 'r', 'e', 't'},
},
}
checkBFD("testBFDAuthTypePassword", t, testPacketBFD, pExpectedBFD)
}
//******************************************************************************
func TestBFDAuthTypeKeyedMD5(t *testing.T) {
// This test packet is the first BFD packet in the BFD sample capture
// pcap file bfd-raw-auth-md5.pcap on the Wireshark sample captures page:
//
// https://wiki.wireshark.org/SampleCaptures
// https://wiki.wireshark.org/SampleCaptures?action=AttachFile&do=get&target=bfd-raw-auth-md5.pcap
var testPacketBFD = []byte{
0x00, 0x00, 0x01, 0x00, 0x00, 0x01, 0x00, 0x10, 0x94, 0x00, 0x00, 0x02, 0x08, 0x00, 0x45, 0x00,
0x00, 0x4c, 0x00, 0x01, 0x00, 0x00, 0x0a, 0x11, 0x2f, 0x48, 0xc0, 0x55, 0x01, 0x02, 0xc0, 0x00,
0x00, 0x01, 0x04, 0x00, 0x0e, 0xc8, 0x00, 0x38, 0x6a, 0xcc, 0x20, 0x44, 0x05, 0x30, 0x00, 0x00,
0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0f, 0x42, 0x40, 0x00, 0x0f, 0x42, 0x40, 0x00, 0x00,
0x00, 0x00, 0x02, 0x18, 0x02, 0x00, 0x00, 0x00, 0x00, 0x05, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06,
0x07, 0x08, 0x09, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x3c, 0xc3, 0xf8, 0x21,
}
// Assemble the BFD object that we expect to emerge from this test.
pExpectedBFD := &BFD{
BaseLayer: BaseLayer{
Contents: []byte{
0x20, 0x44, 0x05, 0x30, 0x00, 0x00, 0x00, 0x01,
0x00, 0x00, 0x00, 0x00, 0x00, 0x0f, 0x42, 0x40,
0x00, 0x0f, 0x42, 0x40, 0x00, 0x00, 0x00, 0x00,
0x02, 0x18, 0x02, 0x00, 0x00, 0x00, 0x00, 0x05,
0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
0x09, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16,
},
Payload: nil,
},
Version: 1,
Diagnostic: BFDDiagnosticNone,
State: BFDStateDown,
Poll: false,
Final: false,
ControlPlaneIndependent: false,
AuthPresent: true,
Demand: false,
Multipoint: false,
DetectMultiplier: 5,
MyDiscriminator: 1,
YourDiscriminator: 0,
DesiredMinTxInterval: 1000000,
RequiredMinRxInterval: 1000000,
RequiredMinEchoRxInterval: 0,
AuthHeader: &BFDAuthHeader{
AuthType: BFDAuthTypeKeyedMD5,
KeyID: 2,
SequenceNumber: 5,
Data: []byte{
0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
0x09, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16,
},
},
}
checkBFD("testBFDAuthTypeKeyedMD5", t, testPacketBFD, pExpectedBFD)
}
//******************************************************************************
func TestBFDAuthTypeMeticulousKeyedSHA1(t *testing.T) {
// This test packet is the first BFD packet in the BFD sample capture
// pcap file bfd-raw-auth-sha1.pcap on the Wireshark sample captures page:
//
// https://wiki.wireshark.org/SampleCaptures
// https://wiki.wireshark.org/SampleCaptures?action=AttachFile&do=get&target=bfd-raw-auth-sha1.pcap
var testPacketBFD = []byte{
0x00, 0x00, 0x01, 0x00, 0x00, 0x01, 0x00, 0x10, 0x94, 0x00, 0x00, 0x02, 0x08, 0x00, 0x45, 0x00,
0x00, 0x50, 0x00, 0x00, 0x00, 0x00, 0x0a, 0x11, 0x2f, 0x45, 0xc0, 0x55, 0x01, 0x02, 0xc0, 0x00,
0x00, 0x01, 0x04, 0x00, 0x0e, 0xc8, 0x00, 0x3c, 0x37, 0x8a, 0x20, 0x44, 0x05, 0x34, 0x00, 0x00,
0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0f, 0x42, 0x40, 0x00, 0x0f, 0x42, 0x40, 0x00, 0x00,
0x00, 0x00, 0x05, 0x1c, 0x02, 0x00, 0x00, 0x00, 0x00, 0x05, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06,
0x07, 0x08, 0x09, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0xea, 0x6d,
0x1f, 0x21,
}
// Assemble the BFD object that we expect to emerge from this test.
pExpectedBFD := &BFD{
BaseLayer: BaseLayer{
Contents: []byte{
0x20, 0x44, 0x05, 0x34, 0x00, 0x00, 0x00, 0x01,
0x00, 0x00, 0x00, 0x00, 0x00, 0x0f, 0x42, 0x40,
0x00, 0x0f, 0x42, 0x40, 0x00, 0x00, 0x00, 0x00,
0x05, 0x1c, 0x02, 0x00, 0x00, 0x00, 0x00, 0x05,
0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
0x09, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16,
0x17, 0x18, 0x19, 0x1a,
},
Payload: nil,
},
Version: 1,
Diagnostic: BFDDiagnosticNone,
State: BFDStateDown,
Poll: false,
Final: false,
ControlPlaneIndependent: false,
AuthPresent: true,
Demand: false,
Multipoint: false,
DetectMultiplier: 5,
MyDiscriminator: 1,
YourDiscriminator: 0,
DesiredMinTxInterval: 1000000,
RequiredMinRxInterval: 1000000,
RequiredMinEchoRxInterval: 0,
AuthHeader: &BFDAuthHeader{
AuthType: BFDAuthTypeMeticulousKeyedSHA1,
KeyID: 2,
SequenceNumber: 5,
Data: []byte{
0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
0x09, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16,
0x17, 0x18, 0x19, 0x1a,
},
},
}
checkBFD("TestBFDAuthTypeMeticulousKeyedSHA1", t, testPacketBFD, pExpectedBFD)
}
|
