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729 lines
18 KiB
Go
729 lines
18 KiB
Go
// Copyright (c) 2021 Tailscale Inc & AUTHORS All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package controlclient
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import (
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"encoding/json"
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"fmt"
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"reflect"
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"strings"
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"testing"
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"time"
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"go4.org/mem"
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"tailscale.com/tailcfg"
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"tailscale.com/types/key"
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"tailscale.com/types/netmap"
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"tailscale.com/types/opt"
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"tailscale.com/types/ptr"
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"tailscale.com/util/must"
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)
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func TestUndeltaPeers(t *testing.T) {
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defer func(old func() time.Time) { clockNow = old }(clockNow)
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var curTime time.Time
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clockNow = func() time.Time {
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return curTime
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}
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online := func(v bool) func(*tailcfg.Node) {
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return func(n *tailcfg.Node) {
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n.Online = &v
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}
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}
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seenAt := func(t time.Time) func(*tailcfg.Node) {
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return func(n *tailcfg.Node) {
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n.LastSeen = &t
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}
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}
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withDERP := func(d string) func(*tailcfg.Node) {
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return func(n *tailcfg.Node) {
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n.DERP = d
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}
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}
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withEP := func(ep string) func(*tailcfg.Node) {
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return func(n *tailcfg.Node) {
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n.Endpoints = []string{ep}
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}
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}
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n := func(id tailcfg.NodeID, name string, mod ...func(*tailcfg.Node)) *tailcfg.Node {
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n := &tailcfg.Node{ID: id, Name: name}
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for _, f := range mod {
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f(n)
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}
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return n
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}
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peers := func(nv ...*tailcfg.Node) []*tailcfg.Node { return nv }
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tests := []struct {
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name string
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mapRes *tailcfg.MapResponse
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curTime time.Time
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prev []*tailcfg.Node
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want []*tailcfg.Node
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}{
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{
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name: "full_peers",
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mapRes: &tailcfg.MapResponse{
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Peers: peers(n(1, "foo"), n(2, "bar")),
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},
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want: peers(n(1, "foo"), n(2, "bar")),
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},
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{
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name: "full_peers_ignores_deltas",
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mapRes: &tailcfg.MapResponse{
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Peers: peers(n(1, "foo"), n(2, "bar")),
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PeersRemoved: []tailcfg.NodeID{2},
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},
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want: peers(n(1, "foo"), n(2, "bar")),
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},
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{
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name: "add_and_update",
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prev: peers(n(1, "foo"), n(2, "bar")),
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mapRes: &tailcfg.MapResponse{
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PeersChanged: peers(n(0, "zero"), n(2, "bar2"), n(3, "three")),
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},
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want: peers(n(0, "zero"), n(1, "foo"), n(2, "bar2"), n(3, "three")),
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},
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{
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name: "remove",
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prev: peers(n(1, "foo"), n(2, "bar")),
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mapRes: &tailcfg.MapResponse{
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PeersRemoved: []tailcfg.NodeID{1},
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},
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want: peers(n(2, "bar")),
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},
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{
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name: "add_and_remove",
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prev: peers(n(1, "foo"), n(2, "bar")),
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mapRes: &tailcfg.MapResponse{
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PeersChanged: peers(n(1, "foo2")),
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PeersRemoved: []tailcfg.NodeID{2},
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},
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want: peers(n(1, "foo2")),
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},
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{
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name: "unchanged",
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prev: peers(n(1, "foo"), n(2, "bar")),
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mapRes: &tailcfg.MapResponse{},
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want: peers(n(1, "foo"), n(2, "bar")),
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},
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{
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name: "online_change",
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prev: peers(n(1, "foo"), n(2, "bar")),
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mapRes: &tailcfg.MapResponse{
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OnlineChange: map[tailcfg.NodeID]bool{
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1: true,
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},
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},
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want: peers(
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n(1, "foo", online(true)),
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n(2, "bar"),
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),
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},
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{
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name: "online_change_offline",
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prev: peers(n(1, "foo"), n(2, "bar")),
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mapRes: &tailcfg.MapResponse{
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OnlineChange: map[tailcfg.NodeID]bool{
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1: false,
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2: true,
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},
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},
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want: peers(
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n(1, "foo", online(false)),
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n(2, "bar", online(true)),
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),
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},
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{
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name: "peer_seen_at",
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prev: peers(n(1, "foo", seenAt(time.Unix(111, 0))), n(2, "bar")),
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curTime: time.Unix(123, 0),
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mapRes: &tailcfg.MapResponse{
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PeerSeenChange: map[tailcfg.NodeID]bool{
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1: false,
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2: true,
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},
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},
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want: peers(
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n(1, "foo"),
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n(2, "bar", seenAt(time.Unix(123, 0))),
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),
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},
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{
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name: "ep_change_derp",
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prev: peers(n(1, "foo", withDERP("127.3.3.40:3"))),
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mapRes: &tailcfg.MapResponse{
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PeersChangedPatch: []*tailcfg.PeerChange{{
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NodeID: 1,
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DERPRegion: 4,
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}},
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},
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want: peers(n(1, "foo", withDERP("127.3.3.40:4"))),
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},
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{
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name: "ep_change_udp",
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prev: peers(n(1, "foo", withEP("1.2.3.4:111"))),
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mapRes: &tailcfg.MapResponse{
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PeersChangedPatch: []*tailcfg.PeerChange{{
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NodeID: 1,
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Endpoints: []string{"1.2.3.4:56"},
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}},
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},
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want: peers(n(1, "foo", withEP("1.2.3.4:56"))),
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},
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{
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name: "ep_change_udp",
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prev: peers(n(1, "foo", withDERP("127.3.3.40:3"), withEP("1.2.3.4:111"))),
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mapRes: &tailcfg.MapResponse{
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PeersChangedPatch: []*tailcfg.PeerChange{{
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NodeID: 1,
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Endpoints: []string{"1.2.3.4:56"},
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}},
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},
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want: peers(n(1, "foo", withDERP("127.3.3.40:3"), withEP("1.2.3.4:56"))),
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},
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{
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name: "ep_change_both",
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prev: peers(n(1, "foo", withDERP("127.3.3.40:3"), withEP("1.2.3.4:111"))),
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mapRes: &tailcfg.MapResponse{
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PeersChangedPatch: []*tailcfg.PeerChange{{
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NodeID: 1,
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DERPRegion: 2,
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Endpoints: []string{"1.2.3.4:56"},
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}},
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},
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want: peers(n(1, "foo", withDERP("127.3.3.40:2"), withEP("1.2.3.4:56"))),
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},
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{
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name: "change_key",
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prev: peers(n(1, "foo")),
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mapRes: &tailcfg.MapResponse{
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PeersChangedPatch: []*tailcfg.PeerChange{{
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NodeID: 1,
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Key: ptr.To(key.NodePublicFromRaw32(mem.B(append(make([]byte, 31), 'A')))),
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}},
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}, want: peers(&tailcfg.Node{
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ID: 1,
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Name: "foo",
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Key: key.NodePublicFromRaw32(mem.B(append(make([]byte, 31), 'A'))),
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}),
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},
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{
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name: "change_key_signature",
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prev: peers(n(1, "foo")),
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mapRes: &tailcfg.MapResponse{
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PeersChangedPatch: []*tailcfg.PeerChange{{
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NodeID: 1,
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KeySignature: []byte{3, 4},
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}},
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}, want: peers(&tailcfg.Node{
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ID: 1,
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Name: "foo",
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KeySignature: []byte{3, 4},
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}),
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},
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{
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name: "change_disco_key",
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prev: peers(n(1, "foo")),
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mapRes: &tailcfg.MapResponse{
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PeersChangedPatch: []*tailcfg.PeerChange{{
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NodeID: 1,
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DiscoKey: ptr.To(key.DiscoPublicFromRaw32(mem.B(append(make([]byte, 31), 'A')))),
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}},
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}, want: peers(&tailcfg.Node{
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ID: 1,
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Name: "foo",
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DiscoKey: key.DiscoPublicFromRaw32(mem.B(append(make([]byte, 31), 'A'))),
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}),
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},
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{
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name: "change_online",
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prev: peers(n(1, "foo")),
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mapRes: &tailcfg.MapResponse{
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PeersChangedPatch: []*tailcfg.PeerChange{{
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NodeID: 1,
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Online: ptr.To(true),
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}},
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}, want: peers(&tailcfg.Node{
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ID: 1,
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Name: "foo",
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Online: ptr.To(true),
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}),
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},
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{
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name: "change_last_seen",
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prev: peers(n(1, "foo")),
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mapRes: &tailcfg.MapResponse{
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PeersChangedPatch: []*tailcfg.PeerChange{{
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NodeID: 1,
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LastSeen: ptr.To(time.Unix(123, 0).UTC()),
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}},
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}, want: peers(&tailcfg.Node{
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ID: 1,
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Name: "foo",
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LastSeen: ptr.To(time.Unix(123, 0).UTC()),
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}),
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},
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{
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name: "change_key_expiry",
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prev: peers(n(1, "foo")),
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mapRes: &tailcfg.MapResponse{
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PeersChangedPatch: []*tailcfg.PeerChange{{
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NodeID: 1,
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KeyExpiry: ptr.To(time.Unix(123, 0).UTC()),
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}},
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}, want: peers(&tailcfg.Node{
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ID: 1,
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Name: "foo",
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KeyExpiry: time.Unix(123, 0).UTC(),
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}),
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},
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{
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name: "change_capabilities",
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prev: peers(n(1, "foo")),
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mapRes: &tailcfg.MapResponse{
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PeersChangedPatch: []*tailcfg.PeerChange{{
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NodeID: 1,
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Capabilities: ptr.To([]string{"foo"}),
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}},
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}, want: peers(&tailcfg.Node{
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ID: 1,
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Name: "foo",
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Capabilities: []string{"foo"},
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}),
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}}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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if !tt.curTime.IsZero() {
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curTime = tt.curTime
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}
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undeltaPeers(tt.mapRes, tt.prev)
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if !reflect.DeepEqual(tt.mapRes.Peers, tt.want) {
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t.Errorf("wrong results\n got: %s\nwant: %s", formatNodes(tt.mapRes.Peers), formatNodes(tt.want))
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}
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})
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}
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}
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func TestFlagExpiredPeers(t *testing.T) {
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n := func(id tailcfg.NodeID, name string, expiry time.Time, mod ...func(*tailcfg.Node)) *tailcfg.Node {
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n := &tailcfg.Node{ID: id, Name: name, KeyExpiry: expiry}
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for _, f := range mod {
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f(n)
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}
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return n
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}
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now := time.Unix(1673373129, 0)
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oldClockNow := clockNow
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clockNow = func() time.Time { return now }
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t.Cleanup(func() { clockNow = oldClockNow })
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timeInPast := now.Add(-1 * time.Hour)
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timeInFuture := now.Add(1 * time.Hour)
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timeBeforeEpoch := flagExpiredPeersEpoch.Add(-1 * time.Second)
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if now.Before(timeBeforeEpoch) {
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panic("current time in test cannot be before epoch")
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}
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var expiredKey key.NodePublic
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if err := expiredKey.UnmarshalText([]byte("nodekey:6da774d5d7740000000000000000000000000000000000000000000000000000")); err != nil {
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panic(err)
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}
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tests := []struct {
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name string
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mapRes *tailcfg.MapResponse
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want []*tailcfg.Node
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}{
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{
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name: "no_expiry",
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mapRes: &tailcfg.MapResponse{
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ControlTime: &now,
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Peers: []*tailcfg.Node{
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n(1, "foo", timeInFuture),
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n(2, "bar", timeInFuture),
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},
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},
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want: []*tailcfg.Node{
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n(1, "foo", timeInFuture),
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n(2, "bar", timeInFuture),
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},
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},
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{
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name: "expiry",
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mapRes: &tailcfg.MapResponse{
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ControlTime: &now,
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Peers: []*tailcfg.Node{
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n(1, "foo", timeInFuture),
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n(2, "bar", timeInPast),
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},
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},
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want: []*tailcfg.Node{
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n(1, "foo", timeInFuture),
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n(2, "bar", timeInPast, func(n *tailcfg.Node) {
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n.Expired = true
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n.Key = expiredKey
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}),
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},
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},
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{
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name: "bad_ControlTime",
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mapRes: &tailcfg.MapResponse{
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// ControlTime here is intentionally before our hardcoded epoch
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ControlTime: &timeBeforeEpoch,
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Peers: []*tailcfg.Node{
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n(1, "foo", timeInFuture),
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n(2, "bar", timeBeforeEpoch.Add(-1*time.Hour)), // before ControlTime
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},
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},
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want: []*tailcfg.Node{
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n(1, "foo", timeInFuture),
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n(2, "bar", timeBeforeEpoch.Add(-1*time.Hour)), // should have expired, but ControlTime is before epoch
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},
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},
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{
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name: "tagged_node",
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mapRes: &tailcfg.MapResponse{
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ControlTime: &now,
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Peers: []*tailcfg.Node{
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n(1, "foo", timeInFuture),
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n(2, "bar", time.Time{}), // tagged node; zero expiry
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},
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},
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want: []*tailcfg.Node{
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n(1, "foo", timeInFuture),
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n(2, "bar", time.Time{}), // not expired
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},
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},
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}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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ms := newTestMapSession(t)
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ms.flagExpiredPeers(tt.mapRes)
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if !reflect.DeepEqual(tt.mapRes.Peers, tt.want) {
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t.Errorf("wrong results\n got: %s\nwant: %s", formatNodes(tt.mapRes.Peers), formatNodes(tt.want))
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}
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})
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}
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}
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func formatNodes(nodes []*tailcfg.Node) string {
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var sb strings.Builder
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for i, n := range nodes {
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if i > 0 {
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sb.WriteString(", ")
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}
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fmt.Fprintf(&sb, "(%d, %q", n.ID, n.Name)
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if n.Online != nil {
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fmt.Fprintf(&sb, ", online=%v", *n.Online)
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}
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if n.LastSeen != nil {
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fmt.Fprintf(&sb, ", lastSeen=%v", n.LastSeen.Unix())
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}
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if n.Key != (key.NodePublic{}) {
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fmt.Fprintf(&sb, ", key=%v", n.Key.String())
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}
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if n.Expired {
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fmt.Fprintf(&sb, ", expired=true")
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}
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sb.WriteString(")")
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}
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return sb.String()
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}
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func newTestMapSession(t *testing.T) *mapSession {
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ms := newMapSession(key.NewNode())
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ms.logf = t.Logf
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return ms
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}
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func TestNetmapForResponse(t *testing.T) {
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t.Run("implicit_packetfilter", func(t *testing.T) {
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somePacketFilter := []tailcfg.FilterRule{
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{
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SrcIPs: []string{"*"},
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DstPorts: []tailcfg.NetPortRange{
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{IP: "10.2.3.4", Ports: tailcfg.PortRange{First: 22, Last: 22}},
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},
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},
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}
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ms := newTestMapSession(t)
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nm1 := ms.netmapForResponse(&tailcfg.MapResponse{
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Node: new(tailcfg.Node),
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PacketFilter: somePacketFilter,
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})
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if len(nm1.PacketFilter) == 0 {
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t.Fatalf("zero length PacketFilter")
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}
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nm2 := ms.netmapForResponse(&tailcfg.MapResponse{
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Node: new(tailcfg.Node),
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PacketFilter: nil, // testing that the server can omit this.
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})
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if len(nm1.PacketFilter) == 0 {
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t.Fatalf("zero length PacketFilter in 2nd netmap")
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}
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if !reflect.DeepEqual(nm1.PacketFilter, nm2.PacketFilter) {
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t.Error("packet filters differ")
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}
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})
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t.Run("implicit_dnsconfig", func(t *testing.T) {
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someDNSConfig := &tailcfg.DNSConfig{Domains: []string{"foo", "bar"}}
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ms := newTestMapSession(t)
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nm1 := ms.netmapForResponse(&tailcfg.MapResponse{
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Node: new(tailcfg.Node),
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DNSConfig: someDNSConfig,
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})
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if !reflect.DeepEqual(nm1.DNS, *someDNSConfig) {
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t.Fatalf("1st DNS wrong")
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}
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nm2 := ms.netmapForResponse(&tailcfg.MapResponse{
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Node: new(tailcfg.Node),
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DNSConfig: nil, // implicit
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})
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if !reflect.DeepEqual(nm2.DNS, *someDNSConfig) {
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t.Fatalf("2nd DNS wrong")
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}
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})
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t.Run("collect_services", func(t *testing.T) {
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ms := newTestMapSession(t)
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var nm *netmap.NetworkMap
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wantCollect := func(v bool) {
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t.Helper()
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if nm.CollectServices != v {
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t.Errorf("netmap.CollectServices = %v; want %v", nm.CollectServices, v)
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}
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|
}
|
|
|
|
nm = ms.netmapForResponse(&tailcfg.MapResponse{
|
|
Node: new(tailcfg.Node),
|
|
})
|
|
wantCollect(false)
|
|
|
|
nm = ms.netmapForResponse(&tailcfg.MapResponse{
|
|
Node: new(tailcfg.Node),
|
|
CollectServices: "false",
|
|
})
|
|
wantCollect(false)
|
|
|
|
nm = ms.netmapForResponse(&tailcfg.MapResponse{
|
|
Node: new(tailcfg.Node),
|
|
CollectServices: "true",
|
|
})
|
|
wantCollect(true)
|
|
|
|
nm = ms.netmapForResponse(&tailcfg.MapResponse{
|
|
Node: new(tailcfg.Node),
|
|
CollectServices: "",
|
|
})
|
|
wantCollect(true)
|
|
})
|
|
t.Run("implicit_domain", func(t *testing.T) {
|
|
ms := newTestMapSession(t)
|
|
var nm *netmap.NetworkMap
|
|
want := func(v string) {
|
|
t.Helper()
|
|
if nm.Domain != v {
|
|
t.Errorf("netmap.Domain = %q; want %q", nm.Domain, v)
|
|
}
|
|
}
|
|
nm = ms.netmapForResponse(&tailcfg.MapResponse{
|
|
Node: new(tailcfg.Node),
|
|
Domain: "foo.com",
|
|
})
|
|
want("foo.com")
|
|
|
|
nm = ms.netmapForResponse(&tailcfg.MapResponse{
|
|
Node: new(tailcfg.Node),
|
|
})
|
|
want("foo.com")
|
|
})
|
|
t.Run("implicit_node", func(t *testing.T) {
|
|
someNode := &tailcfg.Node{
|
|
Name: "foo",
|
|
}
|
|
wantNode := &tailcfg.Node{
|
|
Name: "foo",
|
|
ComputedName: "foo",
|
|
ComputedNameWithHost: "foo",
|
|
}
|
|
ms := newTestMapSession(t)
|
|
|
|
nm1 := ms.netmapForResponse(&tailcfg.MapResponse{
|
|
Node: someNode,
|
|
})
|
|
if nm1.SelfNode == nil {
|
|
t.Fatal("nil Node in 1st netmap")
|
|
}
|
|
if !reflect.DeepEqual(nm1.SelfNode, wantNode) {
|
|
j, _ := json.Marshal(nm1.SelfNode)
|
|
t.Errorf("Node mismatch in 1st netmap; got: %s", j)
|
|
}
|
|
|
|
nm2 := ms.netmapForResponse(&tailcfg.MapResponse{})
|
|
if nm2.SelfNode == nil {
|
|
t.Fatal("nil Node in 1st netmap")
|
|
}
|
|
if !reflect.DeepEqual(nm2.SelfNode, wantNode) {
|
|
j, _ := json.Marshal(nm2.SelfNode)
|
|
t.Errorf("Node mismatch in 2nd netmap; got: %s", j)
|
|
}
|
|
})
|
|
}
|
|
|
|
// TestDeltaDebug tests that tailcfg.Debug values can be omitted in MapResponses
|
|
// entirely or have their opt.Bool values unspecified between MapResponses in a
|
|
// session and that should mean no change. (as of capver 37). But two Debug
|
|
// fields existed prior to capver 37 that weren't opt.Bool; we test that we both
|
|
// still accept the non-opt.Bool form from control for RandomizeClientPort and
|
|
// ForceBackgroundSTUN and also accept the new form, keeping the old form in
|
|
// sync.
|
|
func TestDeltaDebug(t *testing.T) {
|
|
type step struct {
|
|
got *tailcfg.Debug
|
|
want *tailcfg.Debug
|
|
}
|
|
tests := []struct {
|
|
name string
|
|
steps []step
|
|
}{
|
|
{
|
|
name: "nothing-to-nothing",
|
|
steps: []step{
|
|
{nil, nil},
|
|
{nil, nil},
|
|
},
|
|
},
|
|
{
|
|
name: "sticky-with-old-style-randomize-client-port",
|
|
steps: []step{
|
|
{
|
|
&tailcfg.Debug{RandomizeClientPort: true},
|
|
&tailcfg.Debug{
|
|
RandomizeClientPort: true,
|
|
SetRandomizeClientPort: "true",
|
|
},
|
|
},
|
|
{
|
|
nil, // not sent by server
|
|
&tailcfg.Debug{
|
|
RandomizeClientPort: true,
|
|
SetRandomizeClientPort: "true",
|
|
},
|
|
},
|
|
},
|
|
},
|
|
{
|
|
name: "sticky-with-new-style-randomize-client-port",
|
|
steps: []step{
|
|
{
|
|
&tailcfg.Debug{SetRandomizeClientPort: "true"},
|
|
&tailcfg.Debug{
|
|
RandomizeClientPort: true,
|
|
SetRandomizeClientPort: "true",
|
|
},
|
|
},
|
|
{
|
|
nil, // not sent by server
|
|
&tailcfg.Debug{
|
|
RandomizeClientPort: true,
|
|
SetRandomizeClientPort: "true",
|
|
},
|
|
},
|
|
},
|
|
},
|
|
{
|
|
name: "opt-bool-sticky-changing-over-time",
|
|
steps: []step{
|
|
{nil, nil},
|
|
{nil, nil},
|
|
{
|
|
&tailcfg.Debug{OneCGNATRoute: "true"},
|
|
&tailcfg.Debug{OneCGNATRoute: "true"},
|
|
},
|
|
{
|
|
nil,
|
|
&tailcfg.Debug{OneCGNATRoute: "true"},
|
|
},
|
|
{
|
|
&tailcfg.Debug{OneCGNATRoute: "false"},
|
|
&tailcfg.Debug{OneCGNATRoute: "false"},
|
|
},
|
|
{
|
|
nil,
|
|
&tailcfg.Debug{OneCGNATRoute: "false"},
|
|
},
|
|
},
|
|
},
|
|
{
|
|
name: "legacy-ForceBackgroundSTUN",
|
|
steps: []step{
|
|
{
|
|
&tailcfg.Debug{ForceBackgroundSTUN: true},
|
|
&tailcfg.Debug{ForceBackgroundSTUN: true, SetForceBackgroundSTUN: "true"},
|
|
},
|
|
},
|
|
},
|
|
{
|
|
name: "opt-bool-SetForceBackgroundSTUN",
|
|
steps: []step{
|
|
{
|
|
&tailcfg.Debug{SetForceBackgroundSTUN: "true"},
|
|
&tailcfg.Debug{ForceBackgroundSTUN: true, SetForceBackgroundSTUN: "true"},
|
|
},
|
|
},
|
|
},
|
|
{
|
|
name: "server-reset-to-default",
|
|
steps: []step{
|
|
{
|
|
&tailcfg.Debug{SetForceBackgroundSTUN: "true"},
|
|
&tailcfg.Debug{ForceBackgroundSTUN: true, SetForceBackgroundSTUN: "true"},
|
|
},
|
|
{
|
|
&tailcfg.Debug{SetForceBackgroundSTUN: "unset"},
|
|
&tailcfg.Debug{ForceBackgroundSTUN: false, SetForceBackgroundSTUN: "unset"},
|
|
},
|
|
},
|
|
},
|
|
}
|
|
for _, tt := range tests {
|
|
t.Run(tt.name, func(t *testing.T) {
|
|
ms := newTestMapSession(t)
|
|
for stepi, s := range tt.steps {
|
|
nm := ms.netmapForResponse(&tailcfg.MapResponse{Debug: s.got})
|
|
if !reflect.DeepEqual(nm.Debug, s.want) {
|
|
t.Errorf("unexpected result at step index %v; got: %s", stepi, must.Get(json.Marshal(nm.Debug)))
|
|
}
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
// Verifies that copyDebugOptBools doesn't missing any opt.Bools.
|
|
func TestCopyDebugOptBools(t *testing.T) {
|
|
rt := reflect.TypeOf(tailcfg.Debug{})
|
|
for i := 0; i < rt.NumField(); i++ {
|
|
sf := rt.Field(i)
|
|
if sf.Type != reflect.TypeOf(opt.Bool("")) {
|
|
continue
|
|
}
|
|
var src, dst tailcfg.Debug
|
|
reflect.ValueOf(&src).Elem().Field(i).Set(reflect.ValueOf(opt.Bool("true")))
|
|
if src == (tailcfg.Debug{}) {
|
|
t.Fatalf("failed to set field %v", sf.Name)
|
|
}
|
|
copyDebugOptBools(&dst, &src)
|
|
if src != dst {
|
|
t.Fatalf("copyDebugOptBools didn't copy field %v", sf.Name)
|
|
}
|
|
}
|
|
}
|