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package dhcpv6
import (
"encoding/binary"
"errors"
"net"
"strconv"
"testing"
"github.com/insomniacslk/dhcp/iana"
"github.com/stretchr/testify/require"
"github.com/stretchr/testify/suite"
"github.com/u-root/uio/rand"
)
func randomReadMock(value []byte, n int, err error) func([]byte) (int, error) {
return func(b []byte) (int, error) {
copy(b, value)
return n, err
}
}
type GenerateTransactionIDTestSuite struct {
suite.Suite
random []byte
}
func (s *GenerateTransactionIDTestSuite) SetupTest() {
s.random = make([]byte, 16)
}
func (s *GenerateTransactionIDTestSuite) TearDown() {
randomRead = rand.Read
}
func (s *GenerateTransactionIDTestSuite) TestErrors() {
// Error is returned from random number generator
e := errors.New("mocked error")
randomRead = randomReadMock(s.random, 0, e)
_, err := GenerateTransactionID()
s.Assert().Equal(e, err)
// Less than 4 bytes are generated
randomRead = randomReadMock(s.random, 2, nil)
_, err = GenerateTransactionID()
s.Assert().EqualError(err, "invalid random sequence: shorter than 3 bytes")
}
func (s *GenerateTransactionIDTestSuite) TestSuccess() {
binary.BigEndian.PutUint32(s.random, 0x01020300)
randomRead = randomReadMock(s.random, 3, nil)
tid, err := GenerateTransactionID()
s.Require().NoError(err)
s.Assert().Equal(TransactionID{0x1, 0x2, 0x3}, tid)
}
func TestGenerateTransactionIDTestSuite(t *testing.T) {
suite.Run(t, new(GenerateTransactionIDTestSuite))
}
func TestNewMessage(t *testing.T) {
d, err := NewMessage()
require.NoError(t, err)
require.NotNil(t, d)
require.Equal(t, MessageTypeSolicit, d.Type())
require.NotEqual(t, 0, d.TransactionID)
require.Empty(t, d.Options)
}
func TestDecapsulateRelayIndex(t *testing.T) {
m := Message{}
r1, err := EncapsulateRelay(&m, MessageTypeRelayForward, net.IPv6linklocalallnodes, net.IPv6interfacelocalallnodes)
require.NoError(t, err)
r2, err := EncapsulateRelay(r1, MessageTypeRelayForward, net.IPv6loopback, net.IPv6linklocalallnodes)
require.NoError(t, err)
r3, err := EncapsulateRelay(r2, MessageTypeRelayForward, net.IPv6unspecified, net.IPv6linklocalallrouters)
require.NoError(t, err)
first, err := DecapsulateRelayIndex(r3, 0)
require.NoError(t, err)
relay, ok := first.(*RelayMessage)
require.True(t, ok)
require.Equal(t, relay.HopCount, uint8(1))
require.Equal(t, relay.LinkAddr, net.IPv6loopback)
require.Equal(t, relay.PeerAddr, net.IPv6linklocalallnodes)
second, err := DecapsulateRelayIndex(r3, 1)
require.NoError(t, err)
relay, ok = second.(*RelayMessage)
require.True(t, ok)
require.Equal(t, relay.HopCount, uint8(0))
require.Equal(t, relay.LinkAddr, net.IPv6linklocalallnodes)
require.Equal(t, relay.PeerAddr, net.IPv6interfacelocalallnodes)
third, err := DecapsulateRelayIndex(r3, 2)
require.NoError(t, err)
_, ok = third.(*Message)
require.True(t, ok)
rfirst, err := DecapsulateRelayIndex(r3, -1)
require.NoError(t, err)
relay, ok = rfirst.(*RelayMessage)
require.True(t, ok)
require.Equal(t, relay.HopCount, uint8(0))
require.Equal(t, relay.LinkAddr, net.IPv6linklocalallnodes)
require.Equal(t, relay.PeerAddr, net.IPv6interfacelocalallnodes)
_, err = DecapsulateRelayIndex(r3, -2)
require.Error(t, err)
}
func TestAddOption(t *testing.T) {
d := Message{}
require.Empty(t, d.Options)
opt := OptionGeneric{OptionCode: 0, OptionData: []byte{}}
d.AddOption(&opt)
require.Equal(t, Options{&opt}, d.Options.Options)
}
func TestToBytes(t *testing.T) {
d := Message{
MessageType: MessageTypeSolicit,
TransactionID: TransactionID{0xa, 0xb, 0xc},
}
d.AddOption(&OptionGeneric{OptionCode: 0, OptionData: []byte{}})
bytes := d.ToBytes()
expected := []byte{01, 0xa, 0xb, 0xc, 0x00, 0x00, 0x00, 0x00}
require.Equal(t, expected, bytes)
}
func TestFromAndToBytes(t *testing.T) {
expected := [][]byte{
{01, 0xab, 0xcd, 0xef, 0x00, 0x00, 0x00, 0x00},
[]byte("0000\x00\x01\x00\x0e\x00\x01000000000000"),
}
t.Parallel()
for i, packet := range expected {
t.Run(strconv.Itoa(i), func(t *testing.T) {
d, err := FromBytes(packet)
require.NoError(t, err)
toBytes := d.ToBytes()
require.Equal(t, packet, toBytes)
})
}
}
func TestFromBytesInvalid(t *testing.T) {
expected := [][]byte{
{},
{30},
{12},
}
t.Parallel()
for i, packet := range expected {
t.Run(strconv.Itoa(i), func(t *testing.T) {
_, err := FromBytes(packet)
require.Error(t, err)
})
}
}
func TestNewAdvertiseFromSolicit(t *testing.T) {
s := Message{
MessageType: MessageTypeSolicit,
TransactionID: TransactionID{0xa, 0xb, 0xc},
}
s.AddOption(OptClientID(&DUIDLLT{}))
a, err := NewAdvertiseFromSolicit(&s, WithServerID(&DUIDLLT{}))
require.NoError(t, err)
require.Equal(t, a.TransactionID, s.TransactionID)
require.Equal(t, a.Type(), MessageTypeAdvertise)
}
func TestNewReplyFromMessage(t *testing.T) {
msg := Message{
TransactionID: TransactionID{0xa, 0xb, 0xc},
MessageType: MessageTypeConfirm,
}
var duid DUIDLLT
msg.AddOption(OptClientID(&duid))
msg.AddOption(OptServerID(&duid))
rep, err := NewReplyFromMessage(&msg, WithServerID(&duid))
require.NoError(t, err)
require.Equal(t, rep.TransactionID, msg.TransactionID)
require.Equal(t, rep.Type(), MessageTypeReply)
msg.MessageType = MessageTypeRenew
rep, err = NewReplyFromMessage(&msg, WithServerID(&duid))
require.NoError(t, err)
require.Equal(t, rep.TransactionID, msg.TransactionID)
require.Equal(t, rep.Type(), MessageTypeReply)
msg.MessageType = MessageTypeRebind
rep, err = NewReplyFromMessage(&msg, WithServerID(&duid))
require.NoError(t, err)
require.Equal(t, rep.TransactionID, msg.TransactionID)
require.Equal(t, rep.Type(), MessageTypeReply)
msg.MessageType = MessageTypeRelease
rep, err = NewReplyFromMessage(&msg, WithServerID(&duid))
require.NoError(t, err)
require.Equal(t, rep.TransactionID, msg.TransactionID)
require.Equal(t, rep.Type(), MessageTypeReply)
msg.MessageType = MessageTypeInformationRequest
rep, err = NewReplyFromMessage(&msg, WithServerID(&duid))
require.NoError(t, err)
require.Equal(t, rep.TransactionID, msg.TransactionID)
require.Equal(t, rep.Type(), MessageTypeReply)
msg.MessageType = MessageTypeSolicit
_, err = NewReplyFromMessage(&msg)
require.Error(t, err)
msg.MessageType = MessageTypeSolicit
msg.AddOption(&OptionGeneric{OptionCode: OptionRapidCommit})
_, err = NewReplyFromMessage(&msg)
require.NoError(t, err)
msg.Options.Del(OptionRapidCommit)
}
func TestNewMessageTypeSolicit(t *testing.T) {
hwAddr, err := net.ParseMAC("24:0A:9E:9F:EB:2B")
require.NoError(t, err)
duid := &DUIDLL{
HWType: iana.HWTypeEthernet,
LinkLayerAddr: hwAddr,
}
s, err := NewSolicit(hwAddr, WithClientID(duid))
require.NoError(t, err)
require.Equal(t, s.Type(), MessageTypeSolicit)
// Check CID
cduid := s.Options.ClientID()
require.NotNil(t, cduid)
require.Equal(t, cduid, duid)
// Check ORO
oro := s.Options.RequestedOptions()
require.Contains(t, oro, OptionDNSRecursiveNameServer)
require.Contains(t, oro, OptionDomainSearchList)
require.Equal(t, len(oro), 2)
// Check IA_NA
iaid := [4]byte{hwAddr[2], hwAddr[3], hwAddr[4], hwAddr[5]}
iana := s.Options.OneIANA()
require.NotNil(t, iana)
require.Equal(t, iaid, iana.IaId)
}
func TestGetTransactionIDMessage(t *testing.T) {
message, err := NewMessage()
require.NoError(t, err)
transactionID, err := GetTransactionID(message)
require.NoError(t, err)
require.Equal(t, transactionID, message.TransactionID)
}
func TestGetTransactionIDRelay(t *testing.T) {
message, err := NewMessage()
require.NoError(t, err)
relay, err := EncapsulateRelay(message, MessageTypeRelayForward, nil, nil)
require.NoError(t, err)
transactionID, err := GetTransactionID(relay)
require.NoError(t, err)
require.Equal(t, transactionID, message.TransactionID)
}
// TODO test NewMessageTypeSolicit
// test String and Summary
|
