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package dhcpv6
import (
"net"
"testing"
"github.com/insomniacslk/dhcp/iana"
"github.com/stretchr/testify/require"
)
func TestBytesToTransactionID(t *testing.T) {
// only the first three bytes should be used
tid, err := BytesToTransactionID([]byte{0x11, 0x22, 0x33, 0xaa})
require.NoError(t, err)
require.Equal(t, uint32(0x112233), *tid)
}
func TestBytesToTransactionIDShortData(t *testing.T) {
// short sequence, less than three bytes
tid, err := BytesToTransactionID([]byte{0x11, 0x22})
require.Error(t, err)
require.Nil(t, tid)
}
func TestGenerateTransactionID(t *testing.T) {
tid, err := GenerateTransactionID()
require.NoError(t, err)
require.NotNil(t, *tid)
require.True(t, *tid <= 0xffffff, "transaction ID should be smaller than 0xffffff")
}
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.(*DHCPv6Message).transactionID)
require.Empty(t, d.(*DHCPv6Message).options)
}
func TestDecapsulateRelayIndex(t *testing.T) {
m := DHCPv6Message{}
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.(*DHCPv6Relay)
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.(*DHCPv6Relay)
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.(*DHCPv6Message)
require.True(t, ok)
rfirst, err := DecapsulateRelayIndex(r3, -1)
require.NoError(t, err)
relay, ok = rfirst.(*DHCPv6Relay)
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 TestSettersAndGetters(t *testing.T) {
d := DHCPv6Message{}
// Message
d.SetMessage(MessageTypeSolicit)
require.Equal(t, MessageTypeSolicit, d.Type())
d.SetMessage(MessageTypeAdvertise)
require.Equal(t, MessageTypeAdvertise, d.Type())
// TransactionID
d.SetTransactionID(12345)
require.Equal(t, uint32(12345), d.TransactionID())
// Options
require.Empty(t, d.Options())
expectedOptions := []Option{&OptionGeneric{OptionCode: 0, OptionData: []byte{}}}
d.SetOptions(expectedOptions)
require.Equal(t, expectedOptions, d.Options())
}
func TestAddOption(t *testing.T) {
d := DHCPv6Message{}
require.Empty(t, d.Options())
opt := OptionGeneric{OptionCode: 0, OptionData: []byte{}}
d.AddOption(&opt)
require.Equal(t, []Option{&opt}, d.Options())
}
func TestToBytes(t *testing.T) {
d := DHCPv6Message{}
d.SetMessage(MessageTypeSolicit)
d.SetTransactionID(0xabcdef)
opt := OptionGeneric{OptionCode: 0, OptionData: []byte{}}
d.AddOption(&opt)
bytes := d.ToBytes()
expected := []byte{01, 0xab, 0xcd, 0xef, 0x00, 0x00, 0x00, 0x00}
require.Equal(t, expected, bytes)
}
func TestFromAndToBytes(t *testing.T) {
expected := []byte{01, 0xab, 0xcd, 0xef, 0x00, 0x00, 0x00, 0x00}
d, err := FromBytes(expected)
require.NoError(t, err)
toBytes := d.ToBytes()
require.Equal(t, expected, toBytes)
}
func TestNewAdvertiseFromSolicit(t *testing.T) {
s := DHCPv6Message{}
s.SetMessage(MessageTypeSolicit)
s.SetTransactionID(0xabcdef)
cid := OptClientId{}
s.AddOption(&cid)
duid := Duid{}
a, err := NewAdvertiseFromSolicit(&s, WithServerID(duid))
require.NoError(t, err)
require.Equal(t, a.(*DHCPv6Message).TransactionID(), s.TransactionID())
require.Equal(t, a.Type(), MessageTypeAdvertise)
}
func TestNewReplyFromDHCPv6Message(t *testing.T) {
msg := DHCPv6Message{}
msg.SetTransactionID(0xabcdef)
cid := OptClientId{}
msg.AddOption(&cid)
sid := OptServerId{}
duid := Duid{}
sid.Sid = duid
msg.AddOption(&sid)
msg.SetMessage(MessageTypeConfirm)
rep, err := NewReplyFromDHCPv6Message(&msg, WithServerID(duid))
require.NoError(t, err)
require.Equal(t, rep.(*DHCPv6Message).TransactionID(), msg.TransactionID())
require.Equal(t, rep.Type(), MessageTypeReply)
msg.SetMessage(MessageTypeRenew)
rep, err = NewReplyFromDHCPv6Message(&msg, WithServerID(duid))
require.NoError(t, err)
require.Equal(t, rep.(*DHCPv6Message).TransactionID(), msg.TransactionID())
require.Equal(t, rep.Type(), MessageTypeReply)
msg.SetMessage(MessageTypeRebind)
rep, err = NewReplyFromDHCPv6Message(&msg, WithServerID(duid))
require.NoError(t, err)
require.Equal(t, rep.(*DHCPv6Message).TransactionID(), msg.TransactionID())
require.Equal(t, rep.Type(), MessageTypeReply)
msg.SetMessage(MessageTypeRelease)
rep, err = NewReplyFromDHCPv6Message(&msg, WithServerID(duid))
require.NoError(t, err)
require.Equal(t, rep.(*DHCPv6Message).TransactionID(), msg.TransactionID())
require.Equal(t, rep.Type(), MessageTypeReply)
msg.SetMessage(MessageTypeSolicit)
rep, err = NewReplyFromDHCPv6Message(&msg)
require.Error(t, err)
relay := DHCPv6Relay{}
rep, err = NewReplyFromDHCPv6Message(&relay)
require.Error(t, err)
}
func TestNewMessageTypeSolicitWithCID(t *testing.T) {
hwAddr, err := net.ParseMAC("24:0A:9E:9F:EB:2B")
require.NoError(t, err)
duid := Duid{
Type: DUID_LL,
HwType: iana.HwTypeEthernet,
LinkLayerAddr: hwAddr,
}
s, err := NewSolicitWithCID(duid)
require.NoError(t, err)
require.Equal(t, s.Type(), MessageTypeSolicit)
// Check CID
cidOption := s.GetOneOption(OptionClientID)
require.NotNil(t, cidOption)
cid, ok := cidOption.(*OptClientId)
require.True(t, ok)
require.Equal(t, cid.Cid, duid)
// Check ORO
oroOption := s.GetOneOption(OptionORO)
require.NotNil(t, oroOption)
oro, ok := oroOption.(*OptRequestedOption)
require.True(t, ok)
opts := oro.RequestedOptions()
require.Contains(t, opts, OptionDNSRecursiveNameServer)
require.Contains(t, opts, OptionDomainSearchList)
require.Equal(t, len(opts), 2)
}
// TODO test NewMessageTypeSolicit
// test String and Summary
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