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// Copyright 2018, 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 (
"bytes"
"testing"
"github.com/google/gopacket"
)
func TestDHCPv6EncodeRequest(t *testing.T) {
dhcpv6 := &DHCPv6{MsgType: DHCPv6MsgTypeRequest, HopCount: 0, TransactionID: []byte{87, 25, 88}}
client := &DHCPv6DUID{Type: DHCPv6DUIDTypeLLT, HardwareType: []byte{0, 1}, Time: []byte{28, 56, 38, 45}, LinkLayerAddress: []byte{8, 0, 39, 254, 143, 149}}
dhcpv6.Options = append(dhcpv6.Options, NewDHCPv6Option(DHCPv6OptClientID, client.Encode()))
server := &DHCPv6DUID{Type: DHCPv6DUIDTypeLLT, HardwareType: []byte{0, 1}, Time: []byte{28, 56, 37, 232}, LinkLayerAddress: []byte{8, 0, 39, 212, 16, 187}}
dhcpv6.Options = append(dhcpv6.Options, NewDHCPv6Option(DHCPv6OptServerID, server.Encode()))
buf := gopacket.NewSerializeBuffer()
opts := gopacket.SerializeOptions{FixLengths: true}
err := gopacket.SerializeLayers(buf, opts, dhcpv6)
if err != nil {
t.Fatal(err)
}
p2 := gopacket.NewPacket(buf.Bytes(), LayerTypeDHCPv6, testDecodeOptions)
dhcpv62 := p2.Layer(LayerTypeDHCPv6).(*DHCPv6)
testDHCPv6Equal(t, dhcpv6, dhcpv62)
}
func TestDHCPv6EncodeReply(t *testing.T) {
dhcpv6 := &DHCPv6{MsgType: DHCPv6MsgTypeReply, HopCount: 0, TransactionID: []byte{87, 25, 88}}
client := &DHCPv6DUID{Type: DHCPv6DUIDTypeLLT, HardwareType: []byte{0, 1}, Time: []byte{28, 56, 38, 45}, LinkLayerAddress: []byte{8, 0, 39, 254, 143, 149}}
dhcpv6.Options = append(dhcpv6.Options, NewDHCPv6Option(DHCPv6OptClientID, client.Encode()))
server := &DHCPv6DUID{Type: DHCPv6DUIDTypeLLT, HardwareType: []byte{0, 1}, Time: []byte{28, 56, 37, 232}, LinkLayerAddress: []byte{8, 0, 39, 212, 16, 187}}
dhcpv6.Options = append(dhcpv6.Options, NewDHCPv6Option(DHCPv6OptServerID, server.Encode()))
buf := gopacket.NewSerializeBuffer()
opts := gopacket.SerializeOptions{FixLengths: true}
err := gopacket.SerializeLayers(buf, opts, dhcpv6)
if err != nil {
t.Fatal(err)
}
p2 := gopacket.NewPacket(buf.Bytes(), LayerTypeDHCPv6, testDecodeOptions)
dhcpv62 := p2.Layer(LayerTypeDHCPv6).(*DHCPv6)
testDHCPv6Equal(t, dhcpv6, dhcpv62)
}
func testDHCPv6Equal(t *testing.T, d1, d2 *DHCPv6) {
if d1.MsgType != d2.MsgType {
t.Errorf("expected MsgType=%s, got %s", d1.MsgType, d2.MsgType)
}
if d1.HopCount != d2.HopCount {
t.Errorf("expected HopCount=%d, got %d", d1.HopCount, d2.HopCount)
}
if !d1.LinkAddr.Equal(d2.LinkAddr) {
t.Errorf("expected LinkAddr=%v, got %v", d1.LinkAddr, d2.LinkAddr)
}
if !d1.PeerAddr.Equal(d2.PeerAddr) {
t.Errorf("expected PeerAddr=%v, got %v", d1.PeerAddr, d2.PeerAddr)
}
if !bytes.Equal(d1.TransactionID, d2.TransactionID) {
t.Errorf("expected TransactionID=%v, got %v", d1.TransactionID, d2.TransactionID)
}
if len(d1.Options) != len(d2.Options) {
t.Errorf("expected %d options, got %d", len(d1.Options), len(d2.Options))
}
for i, o := range d1.Options {
testDHCPv6OptionEqual(t, i, o, d2.Options[i])
}
}
func testDHCPv6OptionEqual(t *testing.T, idx int, d1, d2 DHCPv6Option) {
if d1.Code != d2.Code {
t.Errorf("expection Options[%d].Code = %s, got %s", idx, d1.Code, d2.Code)
}
if d1.Length != d2.Length {
t.Errorf("expection Options[%d].Length = %d, got %d", idx, d1.Length, d2.Length)
}
if !bytes.Equal(d1.Data, d2.Data) {
t.Errorf("expection Options[%d].Data to be = %v, got %v", idx, d1.Data, d2.Data)
}
}
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