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package dhcpv6
import (
"bytes"
"net"
"testing"
"github.com/insomniacslk/dhcp/iana"
"github.com/stretchr/testify/require"
)
func TestDuidInvalidTooShort(t *testing.T) {
// too short DUID at all (must be at least 2 bytes)
_, err := DuidFromBytes([]byte{0})
require.Error(t, err)
// too short DUID_LL (must be at least 4 bytes)
_, err = DuidFromBytes([]byte{0, 3, 0xa})
require.Error(t, err)
// too short DUID_EN (must be at least 6 bytes)
_, err = DuidFromBytes([]byte{0, 2, 0xa, 0xb, 0xc})
require.Error(t, err)
// too short DUID_LLT (must be at least 8 bytes)
_, err = DuidFromBytes([]byte{0, 1, 0xa, 0xb, 0xc, 0xd, 0xe})
require.Error(t, err)
// too short DUID_UUID (must be at least 18 bytes)
_, err = DuidFromBytes([]byte{0, 4, 0xa, 0xb, 0xc, 0xd, 0xe, 0xf})
require.Error(t, err)
}
func TestDuidLLTFromBytes(t *testing.T) {
buf := []byte{
0, 1, // DUID_LLT
0, 1, // HwTypeEthernet
0x01, 0x02, 0x03, 0x04, // time
0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff, // link-layer addr
}
duid, err := DuidFromBytes(buf)
require.NoError(t, err)
require.Equal(t, 14, duid.Length())
require.Equal(t, DUID_LLT, duid.Type)
require.Equal(t, uint32(0x01020304), duid.Time)
require.Equal(t, iana.HwTypeEthernet, duid.HwType)
require.Equal(t, net.HardwareAddr{0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff}, duid.LinkLayerAddr)
}
func TestDuidLLFromBytes(t *testing.T) {
buf := []byte{
0, 3, // DUID_LL
0, 1, // HwTypeEthernet
0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff, // link-layer addr
}
duid, err := DuidFromBytes(buf)
require.NoError(t, err)
require.Equal(t, 10, duid.Length())
require.Equal(t, DUID_LL, duid.Type)
require.Equal(t, iana.HwTypeEthernet, duid.HwType)
require.Equal(t, net.HardwareAddr{0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff}, duid.LinkLayerAddr)
}
func TestDuidUuidFromBytes(t *testing.T) {
buf := []byte{
0x00, 0x04, // DUID_UUID
}
uuid := []byte{0x00, 0x01, 0x00, 0x02, 0x00, 0x03, 0x00, 0x04, 0x00, 0x05, 0x00, 0x06, 0x00, 0x07, 0x00, 0x08}
buf = append(buf, uuid...)
duid, err := DuidFromBytes(buf)
require.NoError(t, err)
require.Equal(t, 18, duid.Length())
require.Equal(t, DUID_UUID, duid.Type)
require.Equal(t, uuid, duid.Uuid)
}
func TestDuidLLTToBytes(t *testing.T) {
expected := []byte{
0, 1, // DUID_LLT
0, 1, // HwTypeEthernet
0x01, 0x02, 0x03, 0x04, // time
0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff, // link-layer addr
}
duid := Duid{
Type: DUID_LLT,
HwType: iana.HwTypeEthernet,
Time: uint32(0x01020304),
LinkLayerAddr: []byte{0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff},
}
toBytes := duid.ToBytes()
require.Equal(t, expected, toBytes)
}
func TestDuidUuidToBytes(t *testing.T) {
uuid := []byte{0x00, 0x02, 0x00, 0x03, 0x00, 0x04, 0x00, 0x05, 0x00, 0x06, 0x00, 0x07, 0x00, 0x08, 0x00, 0x09}
expected := []byte{00, 04}
expected = append(expected, uuid...)
duid := Duid{
Type: DUID_UUID,
Uuid: uuid,
}
toBytes := duid.ToBytes()
if !bytes.Equal(toBytes, expected) {
t.Fatalf("Invalid ToBytes result. Expected %v, got %v", expected, toBytes)
}
}
func TestOpaqueDuid(t *testing.T) {
duid := []byte("\x00\x0a\x00\x03\x00\x01\x4c\x5e\x0c\x43\xbf\x39")
d, err := DuidFromBytes(duid)
if err != nil {
t.Fatalf("DuidFromBytes: unexpected error: %v", err)
}
if got, want := d.Length(), len(duid); got != want {
t.Errorf("Length: unexpected result: got %d, want %d", got, want)
}
if got, want := d.ToBytes(), duid; !bytes.Equal(got, want) {
t.Fatalf("ToBytes: unexpected result: got %x, want %x", got, want)
}
}
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