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package dhcpv6
import (
"bytes"
"net"
"testing"
"github.com/stretchr/testify/require"
)
func TestDHCPv6Relay(t *testing.T) {
ll := net.IP{0xfe, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xaa, 0xbb, 0xcc, 0xff, 0xfe, 0xdd, 0xee, 0xff}
ma := net.IP{0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01}
r := DHCPv6Relay{
messageType: MessageTypeRelayForward,
hopCount: 10,
linkAddr: ll,
peerAddr: ma,
// options is left empty here for testing purposes, even if it's
// mandatory to have at least a relay message option
}
if mt := r.MessageType(); mt != MessageTypeRelayForward {
t.Fatalf("Invalid message type. Expected %v, got %v", MessageTypeRelayForward, mt)
}
if hc := r.HopCount(); hc != 10 {
t.Fatalf("Invalid hop count. Expected 10, got %v", hc)
}
if la := r.LinkAddr(); !bytes.Equal(la, ll) {
t.Fatalf("Invalid link address. Expected %v, got %v", ll, la)
}
if pa := r.PeerAddr(); !bytes.Equal(pa, ma) {
t.Fatalf("Invalid peer address. Expected %v, got %v", ma, pa)
}
if opts := r.Options(); len(opts) != 0 {
t.Fatalf("Invalid options. Expected none, got %v", opts)
}
}
func TestDHCPv6RelaySettersAndGetters(t *testing.T) {
r := DHCPv6Relay{}
// set and get message type
r.SetMessageType(MessageTypeRelayReply)
if mt := r.MessageType(); mt != MessageTypeRelayReply {
t.Fatalf("Invalid message type. Expected %v, got %v", MessageTypeRelayReply, mt)
}
// set and get hop count
r.SetHopCount(5)
if hc := r.HopCount(); hc != 5 {
t.Fatalf("Invalid hop count. Expected 5, got %v", hc)
}
// set and get link address
r.SetLinkAddr(net.IPv6loopback)
if la := r.LinkAddr(); !bytes.Equal(la, net.IPv6loopback) {
t.Fatalf("Invalid link address. Expected %v, got %v", net.IPv6loopback, la)
}
// set and get peer address
r.SetPeerAddr(net.IPv6loopback)
if pa := r.PeerAddr(); !bytes.Equal(pa, net.IPv6loopback) {
t.Fatalf("Invalid peer address. Expected %v, got %v", net.IPv6loopback, pa)
}
// set and get options
oneOpt := []Option{&OptRelayMsg{relayMessage: &DHCPv6Message{}}}
r.SetOptions(oneOpt)
if opts := r.Options(); len(opts) != 1 || opts[0] != oneOpt[0] {
t.Fatalf("Invalid options. Expected %v, got %v", oneOpt, opts)
}
}
func TestDHCPv6RelayToBytes(t *testing.T) {
expected := []byte{
12, // MessageTypeRelayForward
1, // hop count
0xff, 0x01, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x01, // link addr
0xff, 0x02, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x02, // peer addr
// option relay message
0, 9, // relay msg
0, 10, // option length
// inner dhcp solicit
1, // MessageTypeSolicit
0xaa, 0xbb, 0xcc, // transaction ID
// inner option - elapsed time
0, 8, // elapsed time
0, 2, // length
0, 0,
}
r := DHCPv6Relay{
messageType: MessageTypeRelayForward,
hopCount: 1,
linkAddr: net.IPv6interfacelocalallnodes,
peerAddr: net.IPv6linklocalallrouters,
}
opt := OptRelayMsg{
relayMessage: &DHCPv6Message{
messageType: MessageTypeSolicit,
transactionID: 0xaabbcc,
options: []Option{
&OptElapsedTime{
ElapsedTime: 0,
},
},
},
}
r.AddOption(&opt)
relayBytes := r.ToBytes()
if !bytes.Equal(expected, relayBytes) {
t.Fatalf("Invalid ToBytes result. Expected %v, got %v", expected, relayBytes)
}
}
func TestNewRelayRepFromRelayForw(t *testing.T) {
// create a new relay forward
rf := DHCPv6Relay{}
rf.SetMessageType(MessageTypeRelayForward)
rf.SetPeerAddr(net.IPv6linklocalallrouters)
rf.SetLinkAddr(net.IPv6interfacelocalallnodes)
rf.AddOption(&OptInterfaceId{})
rf.AddOption(&OptRemoteId{})
// create the inner message
s, err := NewMessage()
require.NoError(t, err)
s.AddOption(&OptClientId{})
orm := OptRelayMsg{}
orm.SetRelayMessage(s)
rf.AddOption(&orm)
a, err := NewAdvertiseFromSolicit(s)
require.NoError(t, err)
rr, err := NewRelayReplFromRelayForw(&rf, a)
require.NoError(t, err)
relay := rr.(*DHCPv6Relay)
require.Equal(t, rr.Type(), MessageTypeRelayReply)
require.Equal(t, relay.HopCount(), rf.HopCount())
require.Equal(t, relay.PeerAddr(), rf.PeerAddr())
require.Equal(t, relay.LinkAddr(), rf.LinkAddr())
require.NotNil(t, rr.GetOneOption(OptionInterfaceID))
require.NotNil(t, rr.GetOneOption(OptionRemoteID))
m, err := relay.GetInnerMessage()
require.NoError(t, err)
require.Equal(t, m, a)
rr, err = NewRelayReplFromRelayForw(nil, a)
require.Error(t, err)
rr, err = NewRelayReplFromRelayForw(&rf, nil)
require.Error(t, err)
}
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