gluetun/internal/provider/utils/wireguard_test.go

package utils

import (
	"net/netip"
	"testing"
	"time"

	"github.com/qdm12/gluetun/internal/configuration/settings"
	"github.com/qdm12/gluetun/internal/models"
	"github.com/qdm12/gluetun/internal/wireguard"
	"github.com/stretchr/testify/assert"
)

func ptrTo[T any](x T) *T { return &x }

func Test_BuildWireguardSettings(t *testing.T) {
	t.Parallel()

	testCases := map[string]struct {
		connection    models.Connection
		userSettings  settings.Wireguard
		ipv6Supported bool
		settings      wireguard.Settings
	}{
		"some_settings": {
			connection: models.Connection{
				IP:     netip.AddrFrom4([4]byte{1, 2, 3, 4}),
				Port:   51821,
				PubKey: "public",
			},
			userSettings: settings.Wireguard{
				PrivateKey:   ptrTo("private"),
				PreSharedKey: ptrTo("pre-shared"),
				Addresses: []netip.Prefix{
					netip.PrefixFrom(netip.AddrFrom4([4]byte{1, 1, 1, 1}), 32),
					netip.PrefixFrom(netip.AddrFrom16([16]byte{}), 32),
				},
				AllowedIPs: []netip.Prefix{
					netip.PrefixFrom(netip.AddrFrom4([4]byte{2, 2, 2, 2}), 32),
					netip.PrefixFrom(netip.AddrFrom16([16]byte{}), 32),
				},
				PersistentKeepaliveInterval: ptrTo(time.Hour),
				Interface:                   "wg1",
				MTU:                         ptrTo(uint32(1000)),
				AmneziaWG: settings.AmneziaWg{
					JunkPacketCount: ptrTo(uint16(1)),
					JunkPacketMin:   ptrTo(uint16(0)),
					JunkPacketMax:   ptrTo(uint16(0)),
					PaddingS1:       ptrTo(uint16(0)),
					PaddingS2:       ptrTo(uint16(0)),
					PaddingS3:       ptrTo(uint16(0)),
					PaddingS4:       ptrTo(uint16(0)),
					HeaderH1:        ptrTo("x"),
					HeaderH2:        ptrTo(""),
					HeaderH3:        ptrTo(""),
					HeaderH4:        ptrTo(""),
					InitPacketI1:    ptrTo(""),
					InitPacketI2:    ptrTo(""),
					InitPacketI3:    ptrTo(""),
					InitPacketI4:    ptrTo(""),
					InitPacketI5:    ptrTo(""),
				},
			},
			ipv6Supported: false,
			settings: wireguard.Settings{
				InterfaceName: "wg1",
				PrivateKey:    "private",
				PublicKey:     "public",
				PreSharedKey:  "pre-shared",
				Endpoint:      netip.AddrPortFrom(netip.AddrFrom4([4]byte{1, 2, 3, 4}), 51821),
				Addresses: []netip.Prefix{
					netip.PrefixFrom(netip.AddrFrom4([4]byte{1, 1, 1, 1}), 32),
				},
				AllowedIPs: []netip.Prefix{
					netip.PrefixFrom(netip.AddrFrom4([4]byte{2, 2, 2, 2}), 32),
				},
				PersistentKeepaliveInterval: time.Hour,
				RulePriority:                101,
				IPv6:                        boolPtr(false),
				MTU:                         1000,
				AmneziaWG: wireguard.AmneziaSettings{
					JunkPacketCount: 1,
					HeaderH1:        "x",
				},
			},
		},
	}

	for name, testCase := range testCases {
		t.Run(name, func(t *testing.T) {
			t.Parallel()

			settings := BuildWireguardSettings(testCase.connection,
				testCase.userSettings, testCase.ipv6Supported)

			assert.Equal(t, testCase.settings, settings)
		})
	}
}