Function TestUserspaceEngineTSMPLearnedMismatch

wgengine/userspace_test.go:167–253

(t *testing.T)

}

func TestUserspaceEngineTSMPLearnedMismatch(t *testing.T) {
	bus := eventbustest.NewBus(t)

	ht := health.NewTracker(bus)
	reg := new(usermetric.Registry)
	e, err := NewFakeUserspaceEngine(t.Logf, 0, ht, reg, bus)
	if err != nil {
		t.Fatal(err)
	}
	t.Cleanup(e.Close)
	ue := e.(*userspaceEngine)

	discoChangedChan := make(chan map[key.NodePublic]bool, 1)
	ue.testDiscoChangedHook = func(m map[key.NodePublic]bool) {
		discoChangedChan <- m
	}

	routerCfg := &router.Config{}
	var metricValue int64 = 0

	keyChanges := []struct {
		tsmp     bool
		inMap    bool
		wrongKey bool
	}{
		{tsmp: false, inMap: false, wrongKey: false},
		{tsmp: true, inMap: false, wrongKey: false},
		{tsmp: true, inMap: true, wrongKey: true},
		{tsmp: false, inMap: true, wrongKey: false},
	}

	nkHex := "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
	for _, change := range keyChanges {
		oldDisco := key.NewDisco()
		nm := &netmap.NetworkMap{
			Peers: nodeViews([]*tailcfg.Node{
				{
					ID:       1,
					Key:      nkFromHex(nkHex),
					DiscoKey: oldDisco.Public(),
				},
			}),
		}
		nk, err := key.ParseNodePublicUntyped(mem.S(nkHex))
		if err != nil {
			t.Fatal(err)
		}
		e.SetNetworkMap(nm)

		newDisco := key.NewDisco()
		cfg := &wgcfg.Config{
			Peers: []wgcfg.Peer{
				{
					PublicKey: nk,
					DiscoKey:  newDisco.Public(),
				},
			},
		}