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package dhcpv6
import (
"errors"
"fmt"
"net"
"reflect"
"testing"
"time"
"github.com/google/go-cmp/cmp"
"github.com/stretchr/testify/require"
"github.com/u-root/uio/uio"
)
func TestIATAParseAndGetter(t *testing.T) {
for i, tt := range []struct {
buf []byte
err error
want []*OptIATA
}{
{
buf: []byte{
0, 4, // IATA option code
0, 32, // length
1, 0, 0, 0, // IAID
0, 5, 0, 0x18, 0x24, 1, 0xdb, 0, 0x30, 0x10, 0xc0, 0x8f, 0xfa, 0xce, 0, 0, 0, 0x44, 0, 0, // IPv6
0, 0, 0, 2, // PreferredLifetime
0, 0, 0, 4, // ValidLifetime
},
want: []*OptIATA{
&OptIATA{
IaId: [4]byte{1, 0, 0, 0},
Options: IdentityOptions{Options: Options{&OptIAAddress{
IPv6Addr: net.IP{0x24, 1, 0xdb, 0, 0x30, 0x10, 0xc0, 0x8f, 0xfa, 0xce, 0, 0, 0, 0x44, 0, 0},
PreferredLifetime: 2 * time.Second,
ValidLifetime: 4 * time.Second,
Options: AddressOptions{Options: Options{}},
}}},
},
},
},
{
buf: []byte{
0, 4, // IATA option code
0, 32, // length
1, 0, 0, 0, // IAID
0, 5, 0, 0x18, 0x24, 1, 0xdb, 0, 0x30, 0x10, 0xc0, 0x8f, 0xfa, 0xce, 0, 0, 0, 0x44, 0, 0, // IPv6
0, 0, 0, 2, // PreferredLifetime
0, 0, 0, 4, // ValidLifetime
0, 4, // IATA option code
0, 32, // length
1, 2, 3, 4, // IAID
0, 5, 0, 0x18, 0x24, 1, 0xdb, 0, 0x30, 0x10, 0xc0, 0x8f, 0xfa, 0xce, 0, 0, 0, 0x44, 0, 0, // IPv6
0, 0, 0, 2, // PreferredLifetime
0, 0, 0, 4, // ValidLifetime
},
want: []*OptIATA{
&OptIATA{
IaId: [4]byte{1, 0, 0, 0},
Options: IdentityOptions{Options: Options{&OptIAAddress{
IPv6Addr: net.IP{0x24, 1, 0xdb, 0, 0x30, 0x10, 0xc0, 0x8f, 0xfa, 0xce, 0, 0, 0, 0x44, 0, 0},
PreferredLifetime: 2 * time.Second,
ValidLifetime: 4 * time.Second,
Options: AddressOptions{Options: Options{}},
}}},
},
&OptIATA{
IaId: [4]byte{1, 2, 3, 4},
Options: IdentityOptions{Options: Options{&OptIAAddress{
IPv6Addr: net.IP{0x24, 1, 0xdb, 0, 0x30, 0x10, 0xc0, 0x8f, 0xfa, 0xce, 0, 0, 0, 0x44, 0, 0},
PreferredLifetime: 2 * time.Second,
ValidLifetime: 4 * time.Second,
Options: AddressOptions{Options: Options{}},
}}},
},
},
},
{
buf: nil,
want: nil,
},
{
buf: []byte{0, 4, 0, 1, 0},
want: nil,
err: uio.ErrUnreadBytes,
},
{
buf: []byte{
0, 4, // IATA option code
0, 3, // length
1, 0, 0, // IAID too short
},
want: nil,
err: uio.ErrUnreadBytes,
},
{
buf: []byte{
0, 4, // IATA option code
0, 28, // length
1, 0, 0, 0, // IAID
0, 5, 0, 0x18, 0x24, 1, 0xdb, 0, 0x30, 0x10, 0xc0, 0x8f, 0xfa, 0xce, 0, 0, 0, 0x44, 0, 0, // IPv6
0, 0, 0xb2, 0x7a, // PreferredLifetime
// Missing ValidLifetime
},
want: nil,
err: uio.ErrBufferTooShort,
},
} {
t.Run(fmt.Sprintf("%d", i), func(t *testing.T) {
var mo MessageOptions
if err := mo.FromBytes(tt.buf); !errors.Is(err, tt.err) {
t.Errorf("FromBytes = %v, want %v", err, tt.err)
}
if got := mo.IATA(); !reflect.DeepEqual(got, tt.want) {
t.Errorf("IATA = %v, want %v", got, tt.want)
}
var wantOne *OptIATA
if len(tt.want) >= 1 {
wantOne = tt.want[0]
}
if got := mo.OneIATA(); !reflect.DeepEqual(got, wantOne) {
t.Errorf("OneIATA = %v, want %v", got, wantOne)
}
if len(tt.want) >= 1 {
var b MessageOptions
for _, iata := range tt.want {
b.Add(iata)
}
got := b.ToBytes()
if diff := cmp.Diff(tt.buf, got); diff != "" {
t.Errorf("ToBytes mismatch (-want, +got): %s", diff)
}
}
})
}
}
func TestOptIATAGetOneOption(t *testing.T) {
oaddr := &OptIAAddress{
IPv6Addr: net.ParseIP("::1"),
}
opt := OptIATA{
Options: IdentityOptions{[]Option{&OptStatusCode{}, oaddr}},
}
require.Equal(t, oaddr, opt.Options.OneAddress())
}
func TestOptIATAAddOption(t *testing.T) {
opt := OptIATA{}
opt.Options.Add(OptElapsedTime(0))
require.Equal(t, 1, len(opt.Options.Options))
require.Equal(t, OptionElapsedTime, opt.Options.Options[0].Code())
}
func TestOptIATAGetOneOptionMissingOpt(t *testing.T) {
oaddr := &OptIAAddress{
IPv6Addr: net.ParseIP("::1"),
}
opt := OptIATA{
Options: IdentityOptions{[]Option{&OptStatusCode{}, oaddr}},
}
require.Equal(t, nil, opt.Options.GetOne(OptionDNSRecursiveNameServer))
}
func TestOptIATADelOption(t *testing.T) {
optiaaddr := OptIAAddress{}
optsc := OptStatusCode{}
iana1 := OptIATA{
Options: IdentityOptions{[]Option{
&optsc,
&optiaaddr,
&optiaaddr,
}},
}
iana1.Options.Del(OptionIAAddr)
require.Equal(t, iana1.Options.Options, Options{&optsc})
iana2 := OptIATA{
Options: IdentityOptions{[]Option{
&optiaaddr,
&optsc,
&optiaaddr,
}},
}
iana2.Options.Del(OptionIAAddr)
require.Equal(t, iana2.Options.Options, Options{&optsc})
}
func TestOptIATAString(t *testing.T) {
data := []byte{
1, 0, 0, 0, // IAID
0, 5, 0, 0x18, 0x24, 1, 0xdb, 0, 0x30, 0x10, 0xc0, 0x8f, 0xfa, 0xce, 0, 0, 0, 0x44, 0, 0, 0, 0, 0xb2, 0x7a, 0, 0, 0xc0, 0x8a, // options
}
var opt OptIATA
err := opt.FromBytes(data)
require.NoError(t, err)
str := opt.String()
require.Contains(
t, str,
"IAID=0x01000000",
"String() should return the IAID",
)
require.Contains(
t, str,
"Options={",
"String() should return a list of options",
)
}
|
