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package dhcpv6
import (
"errors"
"fmt"
"net"
"reflect"
"testing"
"time"
"github.com/google/go-cmp/cmp"
"github.com/insomniacslk/dhcp/iana"
"github.com/stretchr/testify/require"
"github.com/u-root/uio/uio"
)
func TestIAAddressParseAndGetter(t *testing.T) {
for i, tt := range []struct {
buf []byte
err error
want []*OptIAAddress
}{
{
buf: []byte{
0, 5, // IAAddr option
0, 0x18, // length
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: []*OptIAAddress{
&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, 5, // IAAddr option
0, 32, // length
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, 13, // option status code
0, 4, // length
0, 0, // StatusSuccess,
'O', 'K', // OK
},
want: []*OptIAAddress{
&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{
&OptStatusCode{StatusCode: iana.StatusSuccess, StatusMessage: "OK"},
}},
},
},
},
{
buf: []byte{
0, 5, // IAAddr option
0, 0x18, // length
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, 5, // IAAddr option
0, 0x18, // length
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: []*OptIAAddress{
&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{}},
},
&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, 3, 0, 1, 0},
want: nil,
err: uio.ErrUnreadBytes,
},
{
buf: []byte{
0, 5, // IAAddr option code
0, 4, // length
0, 0, 0, 1, // truncated IP
},
want: nil,
err: uio.ErrBufferTooShort,
},
{
buf: []byte{
0, 5, // IAAddr option
0, 28, // length
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, 13, // option status code
0, 1, // length
// option too short
},
err: uio.ErrBufferTooShort,
},
} {
t.Run(fmt.Sprintf("%d", i), func(t *testing.T) {
var io IdentityOptions
if err := io.FromBytes(tt.buf); !errors.Is(err, tt.err) {
t.Errorf("FromBytes = %v, want %v", err, tt.err)
}
if got := io.Addresses(); !reflect.DeepEqual(got, tt.want) {
t.Errorf("Addresses = %v, want %v", got, tt.want)
}
var wantOneAddr *OptIAAddress
if len(tt.want) >= 1 {
wantOneAddr = tt.want[0]
}
if got := io.OneAddress(); !reflect.DeepEqual(got, wantOneAddr) {
t.Errorf("OneAddress = %v, want %v", got, wantOneAddr)
}
if len(tt.want) >= 1 {
var b IdentityOptions
for _, iana := range tt.want {
b.Add(iana)
}
got := b.ToBytes()
if diff := cmp.Diff(tt.buf, got); diff != "" {
t.Errorf("ToBytes mismatch (-want, +got): %s", diff)
}
}
})
}
}
func TestOptIAAddressString(t *testing.T) {
ipaddr := []byte{0x24, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15}
data := append(ipaddr, []byte{
0x00, 0x00, 0x00, 70, // preferred lifetime
0x00, 0x00, 0x00, 50, // valid lifetime
0, 8, 0, 2, 0xaa, 0xbb, // options
}...)
var opt OptIAAddress
err := opt.FromBytes(data)
require.NoError(t, err)
str := opt.String()
require.Contains(
t, str,
"IP=2401:203:405:607:809:a0b:c0d:e0f",
"String() should return the ipv6addr",
)
require.Contains(
t, str,
"PreferredLifetime=1m10s",
"String() should return the preferredlifetime",
)
require.Contains(
t, str,
"ValidLifetime=50s",
"String() should return the validlifetime",
)
}
|
