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e1d2b459b1
tailscale/ipn/ipnlocal/local_test.go
Kristoffer Dalby 0e0e53d3b3 util/usermetrics: make usermetrics non-global 
this commit changes usermetrics to be non-global, this is a building
block for correct metrics if a go process runs multiple tsnets or
in tests.

Updates #13420
Updates tailscale/corp#22075

Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
2024-09-25 15:57:00 +02:00

4001 lines
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// Copyright (c) Tailscale Inc & AUTHORS
// SPDX-License-Identifier: BSD-3-Clause
package ipnlocal
import (
"context"
"encoding/json"
"errors"
"fmt"
"math"
"net"
"net/http"
"net/netip"
"os"
"reflect"
"slices"
"sync"
"testing"
"time"
"github.com/google/go-cmp/cmp"
"go4.org/netipx"
"golang.org/x/net/dns/dnsmessage"
"tailscale.com/appc"
"tailscale.com/appc/appctest"
"tailscale.com/clientupdate"
"tailscale.com/control/controlclient"
"tailscale.com/drive"
"tailscale.com/drive/driveimpl"
"tailscale.com/health"
"tailscale.com/hostinfo"
"tailscale.com/ipn"
"tailscale.com/ipn/store/mem"
"tailscale.com/net/netcheck"
"tailscale.com/net/netmon"
"tailscale.com/net/tsaddr"
"tailscale.com/net/tsdial"
"tailscale.com/tailcfg"
"tailscale.com/tsd"
"tailscale.com/tstest"
"tailscale.com/types/dnstype"
"tailscale.com/types/key"
"tailscale.com/types/logger"
"tailscale.com/types/logid"
"tailscale.com/types/netmap"
"tailscale.com/types/opt"
"tailscale.com/types/ptr"
"tailscale.com/types/views"
"tailscale.com/util/dnsname"
"tailscale.com/util/mak"
"tailscale.com/util/must"
"tailscale.com/util/set"
"tailscale.com/util/syspolicy"
"tailscale.com/wgengine"
"tailscale.com/wgengine/filter"
"tailscale.com/wgengine/wgcfg"
)
func fakeStoreRoutes(*appc.RouteInfo) error { return nil }
func inRemove(ip netip.Addr) bool {
for _, pfx := range removeFromDefaultRoute {
if pfx.Contains(ip) {
return true
}
}
return false
}
func TestShrinkDefaultRoute(t *testing.T) {
tests := []struct {
route string
in []string
out []string
localIPFn func(netip.Addr) bool // true if this machine's local IP address should be "in" after shrinking.
}{
{
route: "0.0.0.0/0",
in: []string{"1.2.3.4", "25.0.0.1"},
out: []string{
"10.0.0.1",
"10.255.255.255",
"192.168.0.1",
"192.168.255.255",
"172.16.0.1",
"172.31.255.255",
"100.101.102.103",
"224.0.0.1",
"169.254.169.254",
// Some random IPv6 stuff that shouldn't be in a v4
// default route.
"fe80::",
"2601::1",
},
localIPFn: func(ip netip.Addr) bool { return !inRemove(ip) && ip.Is4() },
},
{
route: "::/0",
in: []string{"::1", "2601::1"},
out: []string{
"fe80::1",
"ff00::1",
tsaddr.TailscaleULARange().Addr().String(),
},
localIPFn: func(ip netip.Addr) bool { return !inRemove(ip) && ip.Is6() },
},
}
// Construct a fake local network environment to make this test hermetic.
// localInterfaceRoutes and hostIPs would normally come from calling interfaceRoutes,
// and localAddresses would normally come from calling interfaces.LocalAddresses.
var b netipx.IPSetBuilder
for _, c := range []string{"127.0.0.0/8", "192.168.9.0/24", "fe80::/32"} {
p := netip.MustParsePrefix(c)
b.AddPrefix(p)
}
localInterfaceRoutes, err := b.IPSet()
if err != nil {
t.Fatal(err)
}
hostIPs := []netip.Addr{
netip.MustParseAddr("127.0.0.1"),
netip.MustParseAddr("192.168.9.39"),
netip.MustParseAddr("fe80::1"),
netip.MustParseAddr("fe80::437d:feff:feca:49a7"),
}
localAddresses := []netip.Addr{
netip.MustParseAddr("192.168.9.39"),
}
for _, test := range tests {
def := netip.MustParsePrefix(test.route)
got, err := shrinkDefaultRoute(def, localInterfaceRoutes, hostIPs)
if err != nil {
t.Fatalf("shrinkDefaultRoute(%q): %v", test.route, err)
}
for _, ip := range test.in {
if !got.Contains(netip.MustParseAddr(ip)) {
t.Errorf("shrink(%q).Contains(%v) = false, want true", test.route, ip)
}
}
for _, ip := range test.out {
if got.Contains(netip.MustParseAddr(ip)) {
t.Errorf("shrink(%q).Contains(%v) = true, want false", test.route, ip)
}
}
for _, ip := range localAddresses {
want := test.localIPFn(ip)
if gotContains := got.Contains(ip); gotContains != want {
t.Errorf("shrink(%q).Contains(%v) = %v, want %v", test.route, ip, gotContains, want)
}
}
}
}
func TestPeerRoutes(t *testing.T) {
pp := netip.MustParsePrefix
tests := []struct {
name string
peers []wgcfg.Peer
want []netip.Prefix
}{
{
name: "small_v4",
peers: []wgcfg.Peer{
{
AllowedIPs: []netip.Prefix{
pp("100.101.102.103/32"),
},
},
},
want: []netip.Prefix{
pp("100.101.102.103/32"),
},
},
{
name: "big_v4",
peers: []wgcfg.Peer{
{
AllowedIPs: []netip.Prefix{
pp("100.101.102.103/32"),
pp("100.101.102.104/32"),
pp("100.101.102.105/32"),
},
},
},
want: []netip.Prefix{
pp("100.64.0.0/10"),
},
},
{
name: "has_1_v6",
peers: []wgcfg.Peer{
{
AllowedIPs: []netip.Prefix{
pp("fd7a:115c:a1e0:ab12:4843:cd96:6258:b240/128"),
},
},
},
want: []netip.Prefix{
pp("fd7a:115c:a1e0::/48"),
},
},
{
name: "has_2_v6",
peers: []wgcfg.Peer{
{
AllowedIPs: []netip.Prefix{
pp("fd7a:115c:a1e0:ab12:4843:cd96:6258:b240/128"),
pp("fd7a:115c:a1e0:ab12:4843:cd96:6258:b241/128"),
},
},
},
want: []netip.Prefix{
pp("fd7a:115c:a1e0::/48"),
},
},
{
name: "big_v4_big_v6",
peers: []wgcfg.Peer{
{
AllowedIPs: []netip.Prefix{
pp("100.101.102.103/32"),
pp("100.101.102.104/32"),
pp("100.101.102.105/32"),
pp("fd7a:115c:a1e0:ab12:4843:cd96:6258:b240/128"),
pp("fd7a:115c:a1e0:ab12:4843:cd96:6258:b241/128"),
},
},
},
want: []netip.Prefix{
pp("100.64.0.0/10"),
pp("fd7a:115c:a1e0::/48"),
},
},
{
name: "output-should-be-sorted",
peers: []wgcfg.Peer{
{
AllowedIPs: []netip.Prefix{
pp("100.64.0.2/32"),
pp("10.0.0.0/16"),
},
},
{
AllowedIPs: []netip.Prefix{
pp("100.64.0.1/32"),
pp("10.0.0.0/8"),
},
},
},
want: []netip.Prefix{
pp("10.0.0.0/8"),
pp("10.0.0.0/16"),
pp("100.64.0.1/32"),
pp("100.64.0.2/32"),
},
},
{
name: "skip-unmasked-prefixes",
peers: []wgcfg.Peer{
{
PublicKey: key.NewNode().Public(),
AllowedIPs: []netip.Prefix{
pp("100.64.0.2/32"),
pp("10.0.0.100/16"),
},
},
},
want: []netip.Prefix{
pp("100.64.0.2/32"),
},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
got := peerRoutes(t.Logf, tt.peers, 2)
if !reflect.DeepEqual(got, tt.want) {
t.Errorf("got = %v; want %v", got, tt.want)
}
})
}
}
func TestPeerAPIBase(t *testing.T) {
tests := []struct {
name string
nm *netmap.NetworkMap
peer *tailcfg.Node
want string
}{
{
name: "nil_netmap",
peer: new(tailcfg.Node),
want: "",
},
{
name: "nil_peer",
nm: new(netmap.NetworkMap),
want: "",
},
{
name: "self_only_4_them_both",
nm: &netmap.NetworkMap{
SelfNode: (&tailcfg.Node{
Addresses: []netip.Prefix{
netip.MustParsePrefix("100.64.1.1/32"),
},
}).View(),
},
peer: &tailcfg.Node{
Addresses: []netip.Prefix{
netip.MustParsePrefix("100.64.1.2/32"),
netip.MustParsePrefix("fe70::2/128"),
},
Hostinfo: (&tailcfg.Hostinfo{
Services: []tailcfg.Service{
{Proto: "peerapi4", Port: 444},
{Proto: "peerapi6", Port: 666},
},
}).View(),
},
want: "http://100.64.1.2:444",
},
{
name: "self_only_6_them_both",
nm: &netmap.NetworkMap{
SelfNode: (&tailcfg.Node{
Addresses: []netip.Prefix{
netip.MustParsePrefix("fe70::1/128"),
},
}).View(),
},
peer: &tailcfg.Node{
Addresses: []netip.Prefix{
netip.MustParsePrefix("100.64.1.2/32"),
netip.MustParsePrefix("fe70::2/128"),
},
Hostinfo: (&tailcfg.Hostinfo{
Services: []tailcfg.Service{
{Proto: "peerapi4", Port: 444},
{Proto: "peerapi6", Port: 666},
},
}).View(),
},
want: "http://[fe70::2]:666",
},
{
name: "self_both_them_only_4",
nm: &netmap.NetworkMap{
SelfNode: (&tailcfg.Node{
Addresses: []netip.Prefix{
netip.MustParsePrefix("100.64.1.1/32"),
netip.MustParsePrefix("fe70::1/128"),
},
}).View(),
},
peer: &tailcfg.Node{
Addresses: []netip.Prefix{
netip.MustParsePrefix("100.64.1.2/32"),
netip.MustParsePrefix("fe70::2/128"),
},
Hostinfo: (&tailcfg.Hostinfo{
Services: []tailcfg.Service{
{Proto: "peerapi4", Port: 444},
},
}).View(),
},
want: "http://100.64.1.2:444",
},
{
name: "self_both_them_only_6",
nm: &netmap.NetworkMap{
SelfNode: (&tailcfg.Node{
Addresses: []netip.Prefix{
netip.MustParsePrefix("100.64.1.1/32"),
netip.MustParsePrefix("fe70::1/128"),
},
}).View(),
},
peer: &tailcfg.Node{
Addresses: []netip.Prefix{
netip.MustParsePrefix("100.64.1.2/32"),
netip.MustParsePrefix("fe70::2/128"),
},
Hostinfo: (&tailcfg.Hostinfo{
Services: []tailcfg.Service{
{Proto: "peerapi6", Port: 666},
},
}).View(),
},
want: "http://[fe70::2]:666",
},
{
name: "self_both_them_no_peerapi_service",
nm: &netmap.NetworkMap{
SelfNode: (&tailcfg.Node{
Addresses: []netip.Prefix{
netip.MustParsePrefix("100.64.1.1/32"),
netip.MustParsePrefix("fe70::1/128"),
},
}).View(),
},
peer: &tailcfg.Node{
Addresses: []netip.Prefix{
netip.MustParsePrefix("100.64.1.2/32"),
netip.MustParsePrefix("fe70::2/128"),
},
},
want: "",
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
got := peerAPIBase(tt.nm, tt.peer.View())
if got != tt.want {
t.Errorf("got %q; want %q", got, tt.want)
}
})
}
}
type panicOnUseTransport struct{}
func (panicOnUseTransport) RoundTrip(*http.Request) (*http.Response, error) {
panic("unexpected HTTP request")
}
func newTestLocalBackend(t testing.TB) *LocalBackend {
var logf logger.Logf = logger.Discard
sys := new(tsd.System)
store := new(mem.Store)
sys.Set(store)
eng, err := wgengine.NewFakeUserspaceEngine(logf, sys.Set, sys.HealthTracker(), sys.UserMetricsRegistry())
if err != nil {
t.Fatalf("NewFakeUserspaceEngine: %v", err)
}
t.Cleanup(eng.Close)
sys.Set(eng)
lb, err := NewLocalBackend(logf, logid.PublicID{}, sys, 0)
if err != nil {
t.Fatalf("NewLocalBackend: %v", err)
}
return lb
}
// Issue 1573: don't generate a machine key if we don't want to be running.
func TestLazyMachineKeyGeneration(t *testing.T) {
tstest.Replace(t, &panicOnMachineKeyGeneration, func() bool { return true })
lb := newTestLocalBackend(t)
lb.SetHTTPTestClient(&http.Client{
Transport: panicOnUseTransport{}, // validate we don't send HTTP requests
})
if err := lb.Start(ipn.Options{}); err != nil {
t.Fatalf("Start: %v", err)
}
// Give the controlclient package goroutines (if they're
// accidentally started) extra time to schedule and run (and thus
// hit panicOnUseTransport).
time.Sleep(500 * time.Millisecond)
}
func TestZeroExitNodeViaLocalAPI(t *testing.T) {
lb := newTestLocalBackend(t)
// Give it an initial exit node in use.
if _, err := lb.EditPrefs(&ipn.MaskedPrefs{
ExitNodeIDSet: true,
Prefs: ipn.Prefs{
ExitNodeID: "foo",
},
}); err != nil {
t.Fatalf("enabling first exit node: %v", err)
}
// SetUseExitNodeEnabled(false) "remembers" the prior exit node.
if _, err := lb.SetUseExitNodeEnabled(false); err != nil {
t.Fatal("expected failure")
}
// Zero the exit node
pv, err := lb.EditPrefs(&ipn.MaskedPrefs{
ExitNodeIDSet: true,
Prefs: ipn.Prefs{
ExitNodeID: "",
},
})
if err != nil {
t.Fatalf("enabling first exit node: %v", err)
}
// We just set the internal exit node to the empty string, so InternalExitNodePrior should
// also be zero'd
if got, want := pv.InternalExitNodePrior(), tailcfg.StableNodeID(""); got != want {
t.Fatalf("unexpected InternalExitNodePrior %q, want: %q", got, want)
}
}
func TestSetUseExitNodeEnabled(t *testing.T) {
lb := newTestLocalBackend(t)
// Can't turn it on if it never had an old value.
if _, err := lb.SetUseExitNodeEnabled(true); err == nil {
t.Fatal("expected success")
}
// But we can turn it off when it's already off.
if _, err := lb.SetUseExitNodeEnabled(false); err != nil {
t.Fatal("expected failure")
}
// Give it an initial exit node in use.
if _, err := lb.EditPrefs(&ipn.MaskedPrefs{
ExitNodeIDSet: true,
Prefs: ipn.Prefs{
ExitNodeID: "foo",
},
}); err != nil {
t.Fatalf("enabling first exit node: %v", err)
}
// Now turn off that exit node.
if prefs, err := lb.SetUseExitNodeEnabled(false); err != nil {
t.Fatal("expected failure")
} else {
if g, w := prefs.ExitNodeID(), tailcfg.StableNodeID(""); g != w {
t.Fatalf("unexpected exit node ID %q; want %q", g, w)
}
if g, w := prefs.InternalExitNodePrior(), tailcfg.StableNodeID("foo"); g != w {
t.Fatalf("unexpected exit node prior %q; want %q", g, w)
}
}
// And turn it back on.
if prefs, err := lb.SetUseExitNodeEnabled(true); err != nil {
t.Fatal("expected failure")
} else {
if g, w := prefs.ExitNodeID(), tailcfg.StableNodeID("foo"); g != w {
t.Fatalf("unexpected exit node ID %q; want %q", g, w)
}
if g, w := prefs.InternalExitNodePrior(), tailcfg.StableNodeID("foo"); g != w {
t.Fatalf("unexpected exit node prior %q; want %q", g, w)
}
}
// Verify we block setting an Internal field.
if _, err := lb.EditPrefs(&ipn.MaskedPrefs{
InternalExitNodePriorSet: true,
}); err == nil {
t.Fatalf("unexpected success; want an error trying to set an internal field")
}
}
func TestFileTargets(t *testing.T) {
b := new(LocalBackend)
_, err := b.FileTargets()
if got, want := fmt.Sprint(err), "not connected to the tailnet"; got != want {
t.Errorf("before connect: got %q; want %q", got, want)
}
b.netMap = new(netmap.NetworkMap)
_, err = b.FileTargets()
if got, want := fmt.Sprint(err), "not connected to the tailnet"; got != want {
t.Errorf("non-running netmap: got %q; want %q", got, want)
}
b.state = ipn.Running
_, err = b.FileTargets()
if got, want := fmt.Sprint(err), "file sharing not enabled by Tailscale admin"; got != want {
t.Errorf("without cap: got %q; want %q", got, want)
}
b.capFileSharing = true
got, err := b.FileTargets()
if err != nil {
t.Fatal(err)
}
if len(got) != 0 {
t.Fatalf("unexpected %d peers", len(got))
}
var peerMap map[tailcfg.NodeID]tailcfg.NodeView
mak.NonNil(&peerMap)
var nodeID tailcfg.NodeID
nodeID = 1234
peer := &tailcfg.Node{
ID: 1234,
Hostinfo: (&tailcfg.Hostinfo{OS: "tvOS"}).View(),
}
peerMap[nodeID] = peer.View()
b.peers = peerMap
got, err = b.FileTargets()
if err != nil {
t.Fatal(err)
}
if len(got) != 0 {
t.Fatalf("unexpected %d peers", len(got))
}
// (other cases handled by TestPeerAPIBase above)
}
func TestInternalAndExternalInterfaces(t *testing.T) {
type interfacePrefix struct {
i netmon.Interface
pfx netip.Prefix
}
masked := func(ips ...interfacePrefix) (pfxs []netip.Prefix) {
for _, ip := range ips {
pfxs = append(pfxs, ip.pfx.Masked())
}
return pfxs
}
iList := func(ips ...interfacePrefix) (il netmon.InterfaceList) {
for _, ip := range ips {
il = append(il, ip.i)
}
return il
}
newInterface := func(name, pfx string, wsl2, loopback bool) interfacePrefix {
ippfx := netip.MustParsePrefix(pfx)
ip := netmon.Interface{
Interface: &net.Interface{},
AltAddrs: []net.Addr{
netipx.PrefixIPNet(ippfx),
},
}
if loopback {
ip.Flags = net.FlagLoopback
}
if wsl2 {
ip.HardwareAddr = []byte{0x00, 0x15, 0x5d, 0x00, 0x00, 0x00}
}
return interfacePrefix{i: ip, pfx: ippfx}
}
var (
en0 = newInterface("en0", "10.20.2.5/16", false, false)
en1 = newInterface("en1", "192.168.1.237/24", false, false)
wsl = newInterface("wsl", "192.168.5.34/24", true, false)
loopback = newInterface("lo0", "127.0.0.1/8", false, true)
)
tests := []struct {
name string
goos string
il netmon.InterfaceList
wantInt []netip.Prefix
wantExt []netip.Prefix
}{
{
name: "single-interface",
goos: "linux",
il: iList(
en0,
loopback,
),
wantInt: masked(loopback),
wantExt: masked(en0),
},
{
name: "multiple-interfaces",
goos: "linux",
il: iList(
en0,
en1,
wsl,
loopback,
),
wantInt: masked(loopback),
wantExt: masked(en0, en1, wsl),
},
{
name: "wsl2",
goos: "windows",
il: iList(
en0,
en1,
wsl,
loopback,
),
wantInt: masked(loopback, wsl),
wantExt: masked(en0, en1),
},
}
for _, tc := range tests {
t.Run(tc.name, func(t *testing.T) {
gotInt, gotExt, err := internalAndExternalInterfacesFrom(tc.il, tc.goos)
if err != nil {
t.Fatal(err)
}
if !reflect.DeepEqual(gotInt, tc.wantInt) {
t.Errorf("unexpected internal prefixes\ngot %v\nwant %v", gotInt, tc.wantInt)
}
if !reflect.DeepEqual(gotExt, tc.wantExt) {
t.Errorf("unexpected external prefixes\ngot %v\nwant %v", gotExt, tc.wantExt)
}
})
}
}
func TestPacketFilterPermitsUnlockedNodes(t *testing.T) {
tests := []struct {
name string
peers []*tailcfg.Node
filter []filter.Match
want bool
}{
{
name: "empty",
want: false,
},
{
name: "no-unsigned",
peers: []*tailcfg.Node{
{ID: 1},
},
want: false,
},
{
name: "unsigned-good",
peers: []*tailcfg.Node{
{ID: 1, UnsignedPeerAPIOnly: true},
},
want: false,
},
{
name: "unsigned-bad",
peers: []*tailcfg.Node{
{
ID: 1,
UnsignedPeerAPIOnly: true,
AllowedIPs: []netip.Prefix{
netip.MustParsePrefix("100.64.0.0/32"),
},
},
},
filter: []filter.Match{
{
Srcs: []netip.Prefix{netip.MustParsePrefix("100.64.0.0/32")},
Dsts: []filter.NetPortRange{
{
Net: netip.MustParsePrefix("100.99.0.0/32"),
},
},
},
},
want: true,
},
{
name: "unsigned-bad-src-is-superset",
peers: []*tailcfg.Node{
{
ID: 1,
UnsignedPeerAPIOnly: true,
AllowedIPs: []netip.Prefix{
netip.MustParsePrefix("100.64.0.0/32"),
},
},
},
filter: []filter.Match{
{
Srcs: []netip.Prefix{netip.MustParsePrefix("100.64.0.0/24")},
Dsts: []filter.NetPortRange{
{
Net: netip.MustParsePrefix("100.99.0.0/32"),
},
},
},
},
want: true,
},
{
name: "unsigned-okay-because-no-dsts",
peers: []*tailcfg.Node{
{
ID: 1,
UnsignedPeerAPIOnly: true,
AllowedIPs: []netip.Prefix{
netip.MustParsePrefix("100.64.0.0/32"),
},
},
},
filter: []filter.Match{
{
Srcs: []netip.Prefix{netip.MustParsePrefix("100.64.0.0/32")},
Caps: []filter.CapMatch{
{
Dst: netip.MustParsePrefix("100.99.0.0/32"),
Cap: "foo",
},
},
},
},
want: false,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
if got := packetFilterPermitsUnlockedNodes(peersMap(nodeViews(tt.peers)), tt.filter); got != tt.want {
t.Errorf("got %v, want %v", got, tt.want)
}
})
}
}
func TestStatusPeerCapabilities(t *testing.T) {
tests := []struct {
name string
peers []tailcfg.NodeView
expectedPeerCapabilities map[tailcfg.StableNodeID][]tailcfg.NodeCapability
expectedPeerCapMap map[tailcfg.StableNodeID]tailcfg.NodeCapMap
}{
{
name: "peers-with-capabilities",
peers: []tailcfg.NodeView{
(&tailcfg.Node{
ID: 1,
StableID: "foo",
IsWireGuardOnly: true,
Hostinfo: (&tailcfg.Hostinfo{}).View(),
Capabilities: []tailcfg.NodeCapability{tailcfg.CapabilitySSH},
CapMap: (tailcfg.NodeCapMap)(map[tailcfg.NodeCapability][]tailcfg.RawMessage{
tailcfg.CapabilitySSH: nil,
}),
}).View(),
(&tailcfg.Node{
ID: 2,
StableID: "bar",
Hostinfo: (&tailcfg.Hostinfo{}).View(),
Capabilities: []tailcfg.NodeCapability{tailcfg.CapabilityAdmin},
CapMap: (tailcfg.NodeCapMap)(map[tailcfg.NodeCapability][]tailcfg.RawMessage{
tailcfg.CapabilityAdmin: {`{"test": "true}`},
}),
}).View(),
},
expectedPeerCapabilities: map[tailcfg.StableNodeID][]tailcfg.NodeCapability{
tailcfg.StableNodeID("foo"): {tailcfg.CapabilitySSH},
tailcfg.StableNodeID("bar"): {tailcfg.CapabilityAdmin},
},
expectedPeerCapMap: map[tailcfg.StableNodeID]tailcfg.NodeCapMap{
tailcfg.StableNodeID("foo"): (tailcfg.NodeCapMap)(map[tailcfg.NodeCapability][]tailcfg.RawMessage{
tailcfg.CapabilitySSH: nil,
}),
tailcfg.StableNodeID("bar"): (tailcfg.NodeCapMap)(map[tailcfg.NodeCapability][]tailcfg.RawMessage{
tailcfg.CapabilityAdmin: {`{"test": "true}`},
}),
},
},
{
name: "peers-without-capabilities",
peers: []tailcfg.NodeView{
(&tailcfg.Node{
ID: 1,
StableID: "foo",
IsWireGuardOnly: true,
Hostinfo: (&tailcfg.Hostinfo{}).View(),
}).View(),
(&tailcfg.Node{
ID: 2,
StableID: "bar",
Hostinfo: (&tailcfg.Hostinfo{}).View(),
}).View(),
},
},
}
b := newTestLocalBackend(t)
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
b.setNetMapLocked(&netmap.NetworkMap{
SelfNode: (&tailcfg.Node{
MachineAuthorized: true,
Addresses: ipps("100.101.101.101"),
}).View(),
Peers: tt.peers,
})
got := b.Status()
for _, peer := range got.Peer {
if !reflect.DeepEqual(peer.Capabilities, tt.expectedPeerCapabilities[peer.ID]) {
t.Errorf("peer capabilities: expected %v got %v", tt.expectedPeerCapabilities, peer.Capabilities)
}
if !reflect.DeepEqual(peer.CapMap, tt.expectedPeerCapMap[peer.ID]) {
t.Errorf("peer capmap: expected %v got %v", tt.expectedPeerCapMap, peer.CapMap)
}
}
})
}
}
// legacyBackend was the interface between Tailscale frontends
// (e.g. cmd/tailscale, iOS/MacOS/Windows GUIs) and the tailscale
// backend (e.g. cmd/tailscaled) running on the same machine.
// (It has nothing to do with the interface between the backends
// and the cloud control plane.)
type legacyBackend interface {
// SetNotifyCallback sets the callback to be called on updates
// from the backend to the client.
SetNotifyCallback(func(ipn.Notify))
// Start starts or restarts the backend, typically when a
// frontend client connects.
Start(ipn.Options) error
}
// Verify that LocalBackend still implements the legacyBackend interface
// for now, at least until the macOS and iOS clients move off of it.
var _ legacyBackend = (*LocalBackend)(nil)
func TestWatchNotificationsCallbacks(t *testing.T) {
b := new(LocalBackend)
n := new(ipn.Notify)
b.WatchNotifications(context.Background(), 0, func() {
b.mu.Lock()
defer b.mu.Unlock()
// Ensure a watcher has been installed.
if len(b.notifyWatchers) != 1 {
t.Fatalf("unexpected number of watchers in new LocalBackend, want: 1 got: %v", len(b.notifyWatchers))
}
// Send a notification. Range over notifyWatchers to get the channel
// because WatchNotifications doesn't expose the handle for it.
for _, sess := range b.notifyWatchers {
select {
case sess.ch <- n:
default:
t.Fatalf("could not send notification")
}
}
}, func(roNotify *ipn.Notify) bool {
if roNotify != n {
t.Fatalf("unexpected notification received. want: %v got: %v", n, roNotify)
}
return false
})
// Ensure watchers have been cleaned up.
b.mu.Lock()
defer b.mu.Unlock()
if len(b.notifyWatchers) != 0 {
t.Fatalf("unexpected number of watchers in new LocalBackend, want: 0 got: %v", len(b.notifyWatchers))
}
}
// tests LocalBackend.updateNetmapDeltaLocked
func TestUpdateNetmapDelta(t *testing.T) {
b := newTestLocalBackend(t)
if b.updateNetmapDeltaLocked(nil) {
t.Errorf("updateNetmapDeltaLocked() = true, want false with nil netmap")
}
b.netMap = &netmap.NetworkMap{}
for i := range 5 {
b.netMap.Peers = append(b.netMap.Peers, (&tailcfg.Node{ID: (tailcfg.NodeID(i) + 1)}).View())
}
b.updatePeersFromNetmapLocked(b.netMap)
someTime := time.Unix(123, 0)
muts, ok := netmap.MutationsFromMapResponse(&tailcfg.MapResponse{
PeersChangedPatch: []*tailcfg.PeerChange{
{
NodeID: 1,
DERPRegion: 1,
},
{
NodeID: 2,
Online: ptr.To(true),
},
{
NodeID: 3,
Online: ptr.To(false),
},
{
NodeID: 4,
LastSeen: ptr.To(someTime),
},
},
}, someTime)
if !ok {
t.Fatal("netmap.MutationsFromMapResponse failed")
}
if !b.updateNetmapDeltaLocked(muts) {
t.Fatalf("updateNetmapDeltaLocked() = false, want true with new netmap")
}
wants := []*tailcfg.Node{
{
ID: 1,
DERP: "127.3.3.40:1",
},
{
ID: 2,
Online: ptr.To(true),
},
{
ID: 3,
Online: ptr.To(false),
},
{
ID: 4,
LastSeen: ptr.To(someTime),
},
}
for _, want := range wants {
gotv, ok := b.peers[want.ID]
if !ok {
t.Errorf("netmap.Peer %v missing from b.peers", want.ID)
continue
}
got := gotv.AsStruct()
if !reflect.DeepEqual(got, want) {
t.Errorf("netmap.Peer %v wrong.\n got: %v\nwant: %v", want.ID, logger.AsJSON(got), logger.AsJSON(want))
}
}
}
// tests WhoIs and indirectly that setNetMapLocked updates b.nodeByAddr correctly.
func TestWhoIs(t *testing.T) {
b := newTestLocalBackend(t)
b.setNetMapLocked(&netmap.NetworkMap{
SelfNode: (&tailcfg.Node{
ID: 1,
User: 10,
Addresses: []netip.Prefix{netip.MustParsePrefix("100.101.102.103/32")},
}).View(),
Peers: []tailcfg.NodeView{
(&tailcfg.Node{
ID: 2,
User: 20,
Addresses: []netip.Prefix{netip.MustParsePrefix("100.200.200.200/32")},
}).View(),
},
UserProfiles: map[tailcfg.UserID]tailcfg.UserProfile{
10: {
DisplayName: "Myself",
},
20: {
DisplayName: "Peer",
},
},
})
tests := []struct {
q string
want tailcfg.NodeID // 0 means want ok=false
wantName string
}{
{"100.101.102.103:0", 1, "Myself"},
{"100.101.102.103:123", 1, "Myself"},
{"100.200.200.200:0", 2, "Peer"},
{"100.200.200.200:123", 2, "Peer"},
{"100.4.0.4:404", 0, ""},
}
for _, tt := range tests {
t.Run(tt.q, func(t *testing.T) {
nv, up, ok := b.WhoIs("", netip.MustParseAddrPort(tt.q))
var got tailcfg.NodeID
if ok {
got = nv.ID()
}
if got != tt.want {
t.Errorf("got nodeID %v; want %v", got, tt.want)
}
if up.DisplayName != tt.wantName {
t.Errorf("got name %q; want %q", up.DisplayName, tt.wantName)
}
})
}
}
func TestWireguardExitNodeDNSResolvers(t *testing.T) {
type tc struct {
name string
id tailcfg.StableNodeID
peers []*tailcfg.Node
wantOK bool
wantResolvers []*dnstype.Resolver
}
tests := []tc{
{
name: "no peers",
id: "1",
wantOK: false,
wantResolvers: nil,
},
{
name: "non wireguard peer",
id: "1",
peers: []*tailcfg.Node{
{
ID: 1,
StableID: "1",
IsWireGuardOnly: false,
ExitNodeDNSResolvers: []*dnstype.Resolver{{Addr: "dns.example.com"}},
},
},
wantOK: false,
wantResolvers: nil,
},
{
name: "no matching IDs",
id: "2",
peers: []*tailcfg.Node{
{
ID: 1,
StableID: "1",
IsWireGuardOnly: true,
ExitNodeDNSResolvers: []*dnstype.Resolver{{Addr: "dns.example.com"}},
},
},
wantOK: false,
wantResolvers: nil,
},
{
name: "wireguard peer",
id: "1",
peers: []*tailcfg.Node{
{
ID: 1,
StableID: "1",
IsWireGuardOnly: true,
ExitNodeDNSResolvers: []*dnstype.Resolver{{Addr: "dns.example.com"}},
},
},
wantOK: true,
wantResolvers: []*dnstype.Resolver{{Addr: "dns.example.com"}},
},
}
for _, tc := range tests {
peers := peersMap(nodeViews(tc.peers))
nm := &netmap.NetworkMap{}
gotResolvers, gotOK := wireguardExitNodeDNSResolvers(nm, peers, tc.id)
if gotOK != tc.wantOK || !resolversEqual(t, gotResolvers, tc.wantResolvers) {
t.Errorf("case: %s: got %v, %v, want %v, %v", tc.name, gotOK, gotResolvers, tc.wantOK, tc.wantResolvers)
}
}
}
func TestDNSConfigForNetmapForExitNodeConfigs(t *testing.T) {
type tc struct {
name string
exitNode tailcfg.StableNodeID
peers []tailcfg.NodeView
dnsConfig *tailcfg.DNSConfig
wantDefaultResolvers []*dnstype.Resolver
wantRoutes map[dnsname.FQDN][]*dnstype.Resolver
}
defaultResolvers := []*dnstype.Resolver{{Addr: "default.example.com"}}
wgResolvers := []*dnstype.Resolver{{Addr: "wg.example.com"}}
peers := []tailcfg.NodeView{
(&tailcfg.Node{
ID: 1,
StableID: "wg",
IsWireGuardOnly: true,
ExitNodeDNSResolvers: wgResolvers,
Hostinfo: (&tailcfg.Hostinfo{}).View(),
}).View(),
// regular tailscale exit node with DNS capabilities
(&tailcfg.Node{
Cap: 26,
ID: 2,
StableID: "ts",
Hostinfo: (&tailcfg.Hostinfo{}).View(),
}).View(),
}
exitDOH := peerAPIBase(&netmap.NetworkMap{Peers: peers}, peers[0]) + "/dns-query"
routes := map[dnsname.FQDN][]*dnstype.Resolver{
"route.example.com.": {{Addr: "route.example.com"}},
}
stringifyRoutes := func(routes map[dnsname.FQDN][]*dnstype.Resolver) map[string][]*dnstype.Resolver {
if routes == nil {
return nil
}
m := make(map[string][]*dnstype.Resolver)
for k, v := range routes {
m[string(k)] = v
}
return m
}
tests := []tc{
{
name: "noExit/noRoutes/noResolver",
exitNode: "",
peers: peers,
dnsConfig: &tailcfg.DNSConfig{},
wantDefaultResolvers: nil,
wantRoutes: nil,
},
{
name: "tsExit/noRoutes/noResolver",
exitNode: "ts",
peers: peers,
dnsConfig: &tailcfg.DNSConfig{},
wantDefaultResolvers: []*dnstype.Resolver{{Addr: exitDOH}},
wantRoutes: nil,
},
{
name: "tsExit/noRoutes/defaultResolver",
exitNode: "ts",
peers: peers,
dnsConfig: &tailcfg.DNSConfig{Resolvers: defaultResolvers},
wantDefaultResolvers: []*dnstype.Resolver{{Addr: exitDOH}},
wantRoutes: nil,
},
// The following two cases may need to be revisited. For a shared-in
// exit node split-DNS may effectively break, furthermore in the future
// if different nodes observe different DNS configurations, even a
// tailnet local exit node may present a different DNS configuration,
// which may not meet expectations in some use cases.
// In the case where a default resolver is set, the default resolver
// should also perhaps take precedence also.
{
name: "tsExit/routes/noResolver",
exitNode: "ts",
peers: peers,
dnsConfig: &tailcfg.DNSConfig{Routes: stringifyRoutes(routes)},
wantDefaultResolvers: []*dnstype.Resolver{{Addr: exitDOH}},
wantRoutes: nil,
},
{
name: "tsExit/routes/defaultResolver",
exitNode: "ts",
peers: peers,
dnsConfig: &tailcfg.DNSConfig{Routes: stringifyRoutes(routes), Resolvers: defaultResolvers},
wantDefaultResolvers: []*dnstype.Resolver{{Addr: exitDOH}},
wantRoutes: nil,
},
// WireGuard exit nodes with DNS capabilities provide a "fallback" type
// behavior, they have a lower precedence than a default resolver, but
// otherwise allow split-DNS to operate as normal, and are used when
// there is no default resolver.
{
name: "wgExit/noRoutes/noResolver",
exitNode: "wg",
peers: peers,
dnsConfig: &tailcfg.DNSConfig{},
wantDefaultResolvers: wgResolvers,
wantRoutes: nil,
},
{
name: "wgExit/noRoutes/defaultResolver",
exitNode: "wg",
peers: peers,
dnsConfig: &tailcfg.DNSConfig{Resolvers: defaultResolvers},
wantDefaultResolvers: defaultResolvers,
wantRoutes: nil,
},
{
name: "wgExit/routes/defaultResolver",
exitNode: "wg",
peers: peers,
dnsConfig: &tailcfg.DNSConfig{Routes: stringifyRoutes(routes), Resolvers: defaultResolvers},
wantDefaultResolvers: defaultResolvers,
wantRoutes: routes,
},
{
name: "wgExit/routes/noResolver",
exitNode: "wg",
peers: peers,
dnsConfig: &tailcfg.DNSConfig{Routes: stringifyRoutes(routes)},
wantDefaultResolvers: wgResolvers,
wantRoutes: routes,
},
}
for _, tc := range tests {
t.Run(tc.name, func(t *testing.T) {
nm := &netmap.NetworkMap{
Peers: tc.peers,
DNS: *tc.dnsConfig,
}
prefs := &ipn.Prefs{ExitNodeID: tc.exitNode, CorpDNS: true}
got := dnsConfigForNetmap(nm, peersMap(tc.peers), prefs.View(), false, t.Logf, "")
if !resolversEqual(t, got.DefaultResolvers, tc.wantDefaultResolvers) {
t.Errorf("DefaultResolvers: got %#v, want %#v", got.DefaultResolvers, tc.wantDefaultResolvers)
}
if !routesEqual(t, got.Routes, tc.wantRoutes) {
t.Errorf("Routes: got %#v, want %#v", got.Routes, tc.wantRoutes)
}
})
}
}
func TestOfferingAppConnector(t *testing.T) {
for _, shouldStore := range []bool{false, true} {
b := newTestBackend(t)
if b.OfferingAppConnector() {
t.Fatal("unexpected offering app connector")
}
if shouldStore {
b.appConnector = appc.NewAppConnector(t.Logf, nil, &appc.RouteInfo{}, fakeStoreRoutes)
} else {
b.appConnector = appc.NewAppConnector(t.Logf, nil, nil, nil)
}
if !b.OfferingAppConnector() {
t.Fatal("unexpected not offering app connector")
}
}
}
func TestRouteAdvertiser(t *testing.T) {
b := newTestBackend(t)
testPrefix := netip.MustParsePrefix("192.0.0.8/32")
ra := appc.RouteAdvertiser(b)
must.Do(ra.AdvertiseRoute(testPrefix))
routes := b.Prefs().AdvertiseRoutes()
if routes.Len() != 1 || routes.At(0) != testPrefix {
t.Fatalf("got routes %v, want %v", routes, []netip.Prefix{testPrefix})
}
must.Do(ra.UnadvertiseRoute(testPrefix))
routes = b.Prefs().AdvertiseRoutes()
if routes.Len() != 0 {
t.Fatalf("got routes %v, want none", routes)
}
}
func TestRouterAdvertiserIgnoresContainedRoutes(t *testing.T) {
b := newTestBackend(t)
testPrefix := netip.MustParsePrefix("192.0.0.0/24")
ra := appc.RouteAdvertiser(b)
must.Do(ra.AdvertiseRoute(testPrefix))
routes := b.Prefs().AdvertiseRoutes()
if routes.Len() != 1 || routes.At(0) != testPrefix {
t.Fatalf("got routes %v, want %v", routes, []netip.Prefix{testPrefix})
}
must.Do(ra.AdvertiseRoute(netip.MustParsePrefix("192.0.0.8/32")))
// the above /32 is not added as it is contained within the /24
routes = b.Prefs().AdvertiseRoutes()
if routes.Len() != 1 || routes.At(0) != testPrefix {
t.Fatalf("got routes %v, want %v", routes, []netip.Prefix{testPrefix})
}
}
func TestObserveDNSResponse(t *testing.T) {
for _, shouldStore := range []bool{false, true} {
b := newTestBackend(t)
// ensure no error when no app connector is configured
b.ObserveDNSResponse(dnsResponse("example.com.", "192.0.0.8"))
rc := &appctest.RouteCollector{}
if shouldStore {
b.appConnector = appc.NewAppConnector(t.Logf, rc, &appc.RouteInfo{}, fakeStoreRoutes)
} else {
b.appConnector = appc.NewAppConnector(t.Logf, rc, nil, nil)
}
b.appConnector.UpdateDomains([]string{"example.com"})
b.appConnector.Wait(context.Background())
b.ObserveDNSResponse(dnsResponse("example.com.", "192.0.0.8"))
b.appConnector.Wait(context.Background())
wantRoutes := []netip.Prefix{netip.MustParsePrefix("192.0.0.8/32")}
if !slices.Equal(rc.Routes(), wantRoutes) {
t.Fatalf("got routes %v, want %v", rc.Routes(), wantRoutes)
}
}
}
func TestCoveredRouteRangeNoDefault(t *testing.T) {
tests := []struct {
existingRoute netip.Prefix
newRoute netip.Prefix
want bool
}{
{
existingRoute: netip.MustParsePrefix("192.0.0.1/32"),
newRoute: netip.MustParsePrefix("192.0.0.1/32"),
want: true,
},
{
existingRoute: netip.MustParsePrefix("192.0.0.1/32"),
newRoute: netip.MustParsePrefix("192.0.0.2/32"),
want: false,
},
{
existingRoute: netip.MustParsePrefix("192.0.0.0/24"),
newRoute: netip.MustParsePrefix("192.0.0.1/32"),
want: true,
},
{
existingRoute: netip.MustParsePrefix("192.0.0.0/16"),
newRoute: netip.MustParsePrefix("192.0.0.0/24"),
want: true,
},
{
existingRoute: netip.MustParsePrefix("0.0.0.0/0"),
newRoute: netip.MustParsePrefix("192.0.0.0/24"),
want: false,
},
{
existingRoute: netip.MustParsePrefix("::/0"),
newRoute: netip.MustParsePrefix("2001:db8::/32"),
want: false,
},
}
for _, tt := range tests {
got := coveredRouteRangeNoDefault([]netip.Prefix{tt.existingRoute}, tt.newRoute)
if got != tt.want {
t.Errorf("coveredRouteRange(%v, %v) = %v, want %v", tt.existingRoute, tt.newRoute, got, tt.want)
}
}
}
func TestReconfigureAppConnector(t *testing.T) {
b := newTestBackend(t)
b.reconfigAppConnectorLocked(b.netMap, b.pm.prefs)
if b.appConnector != nil {
t.Fatal("unexpected app connector")
}
b.EditPrefs(&ipn.MaskedPrefs{
Prefs: ipn.Prefs{
AppConnector: ipn.AppConnectorPrefs{
Advertise: true,
},
},
AppConnectorSet: true,
})
b.reconfigAppConnectorLocked(b.netMap, b.pm.prefs)
if b.appConnector == nil {
t.Fatal("expected app connector")
}
appCfg := `{
"name": "example",
"domains": ["example.com"],
"connectors": ["tag:example"]
}`
b.netMap.SelfNode = (&tailcfg.Node{
Name: "example.ts.net",
Tags: []string{"tag:example"},
CapMap: (tailcfg.NodeCapMap)(map[tailcfg.NodeCapability][]tailcfg.RawMessage{
"tailscale.com/app-connectors": {tailcfg.RawMessage(appCfg)},
}),
}).View()
b.reconfigAppConnectorLocked(b.netMap, b.pm.prefs)
b.appConnector.Wait(context.Background())
want := []string{"example.com"}
if !slices.Equal(b.appConnector.Domains().AsSlice(), want) {
t.Fatalf("got domains %v, want %v", b.appConnector.Domains(), want)
}
if v, _ := b.hostinfo.AppConnector.Get(); !v {
t.Fatalf("expected app connector service")
}
// disable the connector in order to assert that the service is removed
b.EditPrefs(&ipn.MaskedPrefs{
Prefs: ipn.Prefs{
AppConnector: ipn.AppConnectorPrefs{
Advertise: false,
},
},
AppConnectorSet: true,
})
b.reconfigAppConnectorLocked(b.netMap, b.pm.prefs)
if b.appConnector != nil {
t.Fatal("expected no app connector")
}
if v, _ := b.hostinfo.AppConnector.Get(); v {
t.Fatalf("expected no app connector service")
}
}
func resolversEqual(t *testing.T, a, b []*dnstype.Resolver) bool {
if a == nil && b == nil {
return true
}
if a == nil || b == nil {
t.Errorf("resolversEqual: a == nil || b == nil : %#v != %#v", a, b)
return false
}
if len(a) != len(b) {
t.Errorf("resolversEqual: len(a) != len(b) : %#v != %#v", a, b)
return false
}
for i := range a {
if !a[i].Equal(b[i]) {
t.Errorf("resolversEqual: a != b [%d]: %v != %v", i, *a[i], *b[i])
return false
}
}
return true
}
func routesEqual(t *testing.T, a, b map[dnsname.FQDN][]*dnstype.Resolver) bool {
if len(a) != len(b) {
t.Logf("routes: len(a) != len(b): %d != %d", len(a), len(b))
return false
}
for name := range a {
if !resolversEqual(t, a[name], b[name]) {
t.Logf("routes: a != b [%s]: %v != %v", name, a[name], b[name])
return false
}
}
return true
}
// dnsResponse is a test helper that creates a DNS response buffer for the given domain and address
func dnsResponse(domain, address string) []byte {
addr := netip.MustParseAddr(address)
b := dnsmessage.NewBuilder(nil, dnsmessage.Header{})
b.EnableCompression()
b.StartAnswers()
switch addr.BitLen() {
case 32:
b.AResource(
dnsmessage.ResourceHeader{
Name: dnsmessage.MustNewName(domain),
Type: dnsmessage.TypeA,
Class: dnsmessage.ClassINET,
TTL: 0,
},
dnsmessage.AResource{
A: addr.As4(),
},
)
case 128:
b.AAAAResource(
dnsmessage.ResourceHeader{
Name: dnsmessage.MustNewName(domain),
Type: dnsmessage.TypeAAAA,
Class: dnsmessage.ClassINET,
TTL: 0,
},
dnsmessage.AAAAResource{
AAAA: addr.As16(),
},
)
default:
panic("invalid address length")
}
return must.Get(b.Finish())
}
type errorSyspolicyHandler struct {
t *testing.T
err error
key syspolicy.Key
allowKeys map[syspolicy.Key]*string
}
func (h *errorSyspolicyHandler) ReadString(key string) (string, error) {
sk := syspolicy.Key(key)
if _, ok := h.allowKeys[sk]; !ok {
h.t.Errorf("ReadString: %q is not in list of permitted keys", h.key)
}
if sk == h.key {
return "", h.err
}
return "", syspolicy.ErrNoSuchKey
}
func (h *errorSyspolicyHandler) ReadUInt64(key string) (uint64, error) {
h.t.Errorf("ReadUInt64(%q) unexpectedly called", key)
return 0, syspolicy.ErrNoSuchKey
}
func (h *errorSyspolicyHandler) ReadBoolean(key string) (bool, error) {
h.t.Errorf("ReadBoolean(%q) unexpectedly called", key)
return false, syspolicy.ErrNoSuchKey
}
func (h *errorSyspolicyHandler) ReadStringArray(key string) ([]string, error) {
h.t.Errorf("ReadStringArray(%q) unexpectedly called", key)
return nil, syspolicy.ErrNoSuchKey
}
type mockSyspolicyHandler struct {
t *testing.T
// stringPolicies is the collection of policies that we expect to see
// queried by the current test. If the policy is expected but unset, then
// use nil, otherwise use a string equal to the policy's desired value.
stringPolicies map[syspolicy.Key]*string
// stringArrayPolicies is the collection of policies that we expected to see
// queries by the current test, that return policy string arrays.
stringArrayPolicies map[syspolicy.Key][]string
// failUnknownPolicies is set if policies other than those in stringPolicies
// (uint64 or bool policies are not supported by mockSyspolicyHandler yet)
// should be considered a test failure if they are queried.
failUnknownPolicies bool
}
func (h *mockSyspolicyHandler) ReadString(key string) (string, error) {
if s, ok := h.stringPolicies[syspolicy.Key(key)]; ok {
if s == nil {
return "", syspolicy.ErrNoSuchKey
}
return *s, nil
}
if h.failUnknownPolicies {
h.t.Errorf("ReadString(%q) unexpectedly called", key)
}
return "", syspolicy.ErrNoSuchKey
}
func (h *mockSyspolicyHandler) ReadUInt64(key string) (uint64, error) {
if h.failUnknownPolicies {
h.t.Errorf("ReadUInt64(%q) unexpectedly called", key)
}
return 0, syspolicy.ErrNoSuchKey
}
func (h *mockSyspolicyHandler) ReadBoolean(key string) (bool, error) {
if h.failUnknownPolicies {
h.t.Errorf("ReadBoolean(%q) unexpectedly called", key)
}
return false, syspolicy.ErrNoSuchKey
}
func (h *mockSyspolicyHandler) ReadStringArray(key string) ([]string, error) {
if h.failUnknownPolicies {
h.t.Errorf("ReadStringArray(%q) unexpectedly called", key)
}
if s, ok := h.stringArrayPolicies[syspolicy.Key(key)]; ok {
if s == nil {
return []string{}, syspolicy.ErrNoSuchKey
}
return s, nil
}
return nil, syspolicy.ErrNoSuchKey
}
func TestSetExitNodeIDPolicy(t *testing.T) {
pfx := netip.MustParsePrefix
tests := []struct {
name string
exitNodeIPKey bool
exitNodeIDKey bool
exitNodeID string
exitNodeIP string
prefs *ipn.Prefs
exitNodeIPWant string
exitNodeIDWant string
prefsChanged bool
nm *netmap.NetworkMap
lastSuggestedExitNode tailcfg.StableNodeID
}{
{
name: "ExitNodeID key is set",
exitNodeIDKey: true,
exitNodeID: "123",
exitNodeIDWant: "123",
prefsChanged: true,
},
{
name: "ExitNodeID key not set",
exitNodeIDKey: true,
exitNodeIDWant: "",
prefsChanged: false,
},
{
name: "ExitNodeID key set, ExitNodeIP preference set",
exitNodeIDKey: true,
exitNodeID: "123",
prefs: &ipn.Prefs{ExitNodeIP: netip.MustParseAddr("127.0.0.1")},
exitNodeIDWant: "123",
prefsChanged: true,
},
{
name: "ExitNodeID key not set, ExitNodeIP key set",
exitNodeIPKey: true,
exitNodeIP: "127.0.0.1",
prefs: &ipn.Prefs{ExitNodeIP: netip.MustParseAddr("127.0.0.1")},
exitNodeIPWant: "127.0.0.1",
prefsChanged: false,
},
{
name: "ExitNodeIP key set, existing ExitNodeIP pref",
exitNodeIPKey: true,
exitNodeIP: "127.0.0.1",
prefs: &ipn.Prefs{ExitNodeIP: netip.MustParseAddr("127.0.0.1")},
exitNodeIPWant: "127.0.0.1",
prefsChanged: false,
},
{
name: "existing preferences match policy",
exitNodeIDKey: true,
exitNodeID: "123",
prefs: &ipn.Prefs{ExitNodeID: tailcfg.StableNodeID("123")},
exitNodeIDWant: "123",
prefsChanged: false,
},
{
name: "ExitNodeIP set if net map does not have corresponding node",
exitNodeIPKey: true,
prefs: &ipn.Prefs{ExitNodeIP: netip.MustParseAddr("127.0.0.1")},
exitNodeIP: "127.0.0.1",
exitNodeIPWant: "127.0.0.1",
prefsChanged: false,
nm: &netmap.NetworkMap{
Name: "foo.tailnet",
SelfNode: (&tailcfg.Node{
Addresses: []netip.Prefix{
pfx("100.102.103.104/32"),
pfx("100::123/128"),
},
}).View(),
Peers: []tailcfg.NodeView{
(&tailcfg.Node{
Name: "a.tailnet",
Addresses: []netip.Prefix{
pfx("100.0.0.201/32"),
pfx("100::201/128"),
},
}).View(),
(&tailcfg.Node{
Name: "b.tailnet",
Addresses: []netip.Prefix{
pfx("100::202/128"),
},
}).View(),
},
},
},
{
name: "ExitNodeIP cleared if net map has corresponding node - policy matches prefs",
prefs: &ipn.Prefs{ExitNodeIP: netip.MustParseAddr("127.0.0.1")},
exitNodeIPKey: true,
exitNodeIP: "127.0.0.1",
exitNodeIPWant: "",
exitNodeIDWant: "123",
prefsChanged: true,
nm: &netmap.NetworkMap{
Name: "foo.tailnet",
SelfNode: (&tailcfg.Node{
Addresses: []netip.Prefix{
pfx("100.102.103.104/32"),
pfx("100::123/128"),
},
}).View(),
Peers: []tailcfg.NodeView{
(&tailcfg.Node{
Name: "a.tailnet",
StableID: tailcfg.StableNodeID("123"),
Addresses: []netip.Prefix{
pfx("127.0.0.1/32"),
pfx("100::201/128"),
},
}).View(),
(&tailcfg.Node{
Name: "b.tailnet",
Addresses: []netip.Prefix{
pfx("100::202/128"),
},
}).View(),
},
},
},
{
name: "ExitNodeIP cleared if net map has corresponding node - no policy set",
prefs: &ipn.Prefs{ExitNodeIP: netip.MustParseAddr("127.0.0.1")},
exitNodeIPWant: "",
exitNodeIDWant: "123",
prefsChanged: true,
nm: &netmap.NetworkMap{
Name: "foo.tailnet",
SelfNode: (&tailcfg.Node{
Addresses: []netip.Prefix{
pfx("100.102.103.104/32"),
pfx("100::123/128"),
},
}).View(),
Peers: []tailcfg.NodeView{
(&tailcfg.Node{
Name: "a.tailnet",
StableID: tailcfg.StableNodeID("123"),
Addresses: []netip.Prefix{
pfx("127.0.0.1/32"),
pfx("100::201/128"),
},
}).View(),
(&tailcfg.Node{
Name: "b.tailnet",
Addresses: []netip.Prefix{
pfx("100::202/128"),
},
}).View(),
},
},
},
{
name: "ExitNodeIP cleared if net map has corresponding node - different exit node IP in policy",
exitNodeIPKey: true,
prefs: &ipn.Prefs{ExitNodeIP: netip.MustParseAddr("127.0.0.1")},
exitNodeIP: "100.64.5.6",
exitNodeIPWant: "",
exitNodeIDWant: "123",
prefsChanged: true,
nm: &netmap.NetworkMap{
Name: "foo.tailnet",
SelfNode: (&tailcfg.Node{
Addresses: []netip.Prefix{
pfx("100.102.103.104/32"),
pfx("100::123/128"),
},
}).View(),
Peers: []tailcfg.NodeView{
(&tailcfg.Node{
Name: "a.tailnet",
StableID: tailcfg.StableNodeID("123"),
Addresses: []netip.Prefix{
pfx("100.64.5.6/32"),
pfx("100::201/128"),
},
}).View(),
(&tailcfg.Node{
Name: "b.tailnet",
Addresses: []netip.Prefix{
pfx("100::202/128"),
},
}).View(),
},
},
},
{
name: "ExitNodeID key is set to auto and last suggested exit node is populated",
exitNodeIDKey: true,
exitNodeID: "auto:any",
lastSuggestedExitNode: "123",
exitNodeIDWant: "123",
prefsChanged: true,
},
{
name: "ExitNodeID key is set to auto and last suggested exit node is not populated",
exitNodeIDKey: true,
exitNodeID: "auto:any",
prefsChanged: true,
exitNodeIDWant: "auto:any",
},
}
for _, test := range tests {
t.Run(test.name, func(t *testing.T) {
b := newTestBackend(t)
msh := &mockSyspolicyHandler{
t: t,
stringPolicies: map[syspolicy.Key]*string{
syspolicy.ExitNodeID: nil,
syspolicy.ExitNodeIP: nil,
},
}
if test.exitNodeIDKey {
msh.stringPolicies[syspolicy.ExitNodeID] = &test.exitNodeID
}
if test.exitNodeIPKey {
msh.stringPolicies[syspolicy.ExitNodeIP] = &test.exitNodeIP
}
syspolicy.SetHandlerForTest(t, msh)
if test.nm == nil {
test.nm = new(netmap.NetworkMap)
}
if test.prefs == nil {
test.prefs = ipn.NewPrefs()
}
pm := must.Get(newProfileManager(new(mem.Store), t.Logf, new(health.Tracker)))
pm.prefs = test.prefs.View()
b.netMap = test.nm
b.pm = pm
b.lastSuggestedExitNode = test.lastSuggestedExitNode
changed := setExitNodeID(b.pm.prefs.AsStruct(), test.nm, tailcfg.StableNodeID(test.lastSuggestedExitNode))
b.SetPrefsForTest(pm.CurrentPrefs().AsStruct())
if got := b.pm.prefs.ExitNodeID(); got != tailcfg.StableNodeID(test.exitNodeIDWant) {
t.Errorf("got %v want %v", got, test.exitNodeIDWant)
}
if got := b.pm.prefs.ExitNodeIP(); test.exitNodeIPWant == "" {
if got.String() != "invalid IP" {
t.Errorf("got %v want invalid IP", got)
}
} else if got.String() != test.exitNodeIPWant {
t.Errorf("got %v want %v", got, test.exitNodeIPWant)
}
if changed != test.prefsChanged {
t.Errorf("wanted prefs changed %v, got prefs changed %v", test.prefsChanged, changed)
}
})
}
}
func TestUpdateNetmapDeltaAutoExitNode(t *testing.T) {
peer1 := makePeer(1, withCap(26), withSuggest(), withExitRoutes())
peer2 := makePeer(2, withCap(26), withSuggest(), withExitRoutes())
derpMap := &tailcfg.DERPMap{
Regions: map[int]*tailcfg.DERPRegion{
1: {
Nodes: []*tailcfg.DERPNode{
{
Name: "t1",
RegionID: 1,
},
},
},
2: {
Nodes: []*tailcfg.DERPNode{
{
Name: "t2",
RegionID: 2,
},
},
},
},
}
report := &netcheck.Report{
RegionLatency: map[int]time.Duration{
1: 10 * time.Millisecond,
2: 5 * time.Millisecond,
3: 30 * time.Millisecond,
},
PreferredDERP: 2,
}
tests := []struct {
name string
lastSuggestedExitNode tailcfg.StableNodeID
netmap *netmap.NetworkMap
muts []*tailcfg.PeerChange
exitNodeIDWant tailcfg.StableNodeID
updateNetmapDeltaResponse bool
report *netcheck.Report
}{
{
name: "selected auto exit node goes offline",
lastSuggestedExitNode: peer1.StableID(),
netmap: &netmap.NetworkMap{
Peers: []tailcfg.NodeView{
peer1,
peer2,
},
DERPMap: derpMap,
},
muts: []*tailcfg.PeerChange{
{
NodeID: 1,
Online: ptr.To(false),
},
{
NodeID: 2,
Online: ptr.To(true),
},
},
exitNodeIDWant: peer2.StableID(),
updateNetmapDeltaResponse: false,
report: report,
},
{
name: "other exit node goes offline doesn't change selected auto exit node that's still online",
lastSuggestedExitNode: peer2.StableID(),
netmap: &netmap.NetworkMap{
Peers: []tailcfg.NodeView{
peer1,
peer2,
},
DERPMap: derpMap,
},
muts: []*tailcfg.PeerChange{
{
NodeID: 1,
Online: ptr.To(false),
},
{
NodeID: 2,
Online: ptr.To(true),
},
},
exitNodeIDWant: peer2.StableID(),
updateNetmapDeltaResponse: true,
report: report,
},
}
msh := &mockSyspolicyHandler{
t: t,
stringPolicies: map[syspolicy.Key]*string{
syspolicy.ExitNodeID: ptr.To("auto:any"),
},
}
syspolicy.SetHandlerForTest(t, msh)
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
b := newTestLocalBackend(t)
b.netMap = tt.netmap
b.updatePeersFromNetmapLocked(b.netMap)
b.lastSuggestedExitNode = tt.lastSuggestedExitNode
b.sys.MagicSock.Get().SetLastNetcheckReportForTest(b.ctx, tt.report)
b.SetPrefsForTest(b.pm.CurrentPrefs().AsStruct())
someTime := time.Unix(123, 0)
muts, ok := netmap.MutationsFromMapResponse(&tailcfg.MapResponse{
PeersChangedPatch: tt.muts,
}, someTime)
if !ok {
t.Fatal("netmap.MutationsFromMapResponse failed")
}
if b.pm.prefs.ExitNodeID() != tt.lastSuggestedExitNode {
t.Fatalf("did not set exit node ID to last suggested exit node despite auto policy")
}
got := b.UpdateNetmapDelta(muts)
if got != tt.updateNetmapDeltaResponse {
t.Fatalf("got %v expected %v from UpdateNetmapDelta", got, tt.updateNetmapDeltaResponse)
}
if b.pm.prefs.ExitNodeID() != tt.exitNodeIDWant {
t.Fatalf("did not get expected exit node id after UpdateNetmapDelta")
}
})
}
}
func TestAutoExitNodeSetNetInfoCallback(t *testing.T) {
b := newTestLocalBackend(t)
hi := hostinfo.New()
ni := tailcfg.NetInfo{LinkType: "wired"}
hi.NetInfo = &ni
b.hostinfo = hi
k := key.NewMachine()
var cc *mockControl
opts := controlclient.Options{
ServerURL: "https://example.com",
GetMachinePrivateKey: func() (key.MachinePrivate, error) {
return k, nil
},
Dialer: tsdial.NewDialer(netmon.NewStatic()),
Logf: b.logf,
}
cc = newClient(t, opts)
b.cc = cc
msh := &mockSyspolicyHandler{
t: t,
stringPolicies: map[syspolicy.Key]*string{
syspolicy.ExitNodeID: ptr.To("auto:any"),
},
}
syspolicy.SetHandlerForTest(t, msh)
peer1 := makePeer(1, withCap(26), withDERP(3), withSuggest(), withExitRoutes())
peer2 := makePeer(2, withCap(26), withDERP(2), withSuggest(), withExitRoutes())
selfNode := tailcfg.Node{
Addresses: []netip.Prefix{
netip.MustParsePrefix("100.64.1.1/32"),
netip.MustParsePrefix("fe70::1/128"),
},
DERP: "127.3.3.40:2",
}
defaultDERPMap := &tailcfg.DERPMap{
Regions: map[int]*tailcfg.DERPRegion{
1: {
Nodes: []*tailcfg.DERPNode{
{
Name: "t1",
RegionID: 1,
},
},
},
2: {
Nodes: []*tailcfg.DERPNode{
{
Name: "t2",
RegionID: 2,
},
},
},
3: {
Nodes: []*tailcfg.DERPNode{
{
Name: "t3",
RegionID: 3,
},
},
},
},
}
b.netMap = &netmap.NetworkMap{
SelfNode: selfNode.View(),
Peers: []tailcfg.NodeView{
peer1,
peer2,
},
DERPMap: defaultDERPMap,
}
b.lastSuggestedExitNode = peer1.StableID()
b.SetPrefsForTest(b.pm.CurrentPrefs().AsStruct())
if eid := b.Prefs().ExitNodeID(); eid != peer1.StableID() {
t.Errorf("got initial exit node %v, want %v", eid, peer1.StableID())
}
b.refreshAutoExitNode = true
b.sys.MagicSock.Get().SetLastNetcheckReportForTest(b.ctx, &netcheck.Report{
RegionLatency: map[int]time.Duration{
1: 10 * time.Millisecond,
2: 5 * time.Millisecond,
3: 30 * time.Millisecond,
},
PreferredDERP: 2,
})
b.setNetInfo(&ni)
if eid := b.Prefs().ExitNodeID(); eid != peer2.StableID() {
t.Errorf("got final exit node %v, want %v", eid, peer2.StableID())
}
}
func TestSetControlClientStatusAutoExitNode(t *testing.T) {
peer1 := makePeer(1, withCap(26), withSuggest(), withExitRoutes(), withNodeKey())
peer2 := makePeer(2, withCap(26), withSuggest(), withExitRoutes(), withNodeKey())
derpMap := &tailcfg.DERPMap{
Regions: map[int]*tailcfg.DERPRegion{
1: {
Nodes: []*tailcfg.DERPNode{
{
Name: "t1",
RegionID: 1,
},
},
},
2: {
Nodes: []*tailcfg.DERPNode{
{
Name: "t2",
RegionID: 2,
},
},
},
},
}
report := &netcheck.Report{
RegionLatency: map[int]time.Duration{
1: 10 * time.Millisecond,
2: 5 * time.Millisecond,
3: 30 * time.Millisecond,
},
PreferredDERP: 1,
}
nm := &netmap.NetworkMap{
Peers: []tailcfg.NodeView{
peer1,
peer2,
},
DERPMap: derpMap,
}
b := newTestLocalBackend(t)
msh := &mockSyspolicyHandler{
t: t,
stringPolicies: map[syspolicy.Key]*string{
syspolicy.ExitNodeID: ptr.To("auto:any"),
},
}
syspolicy.SetHandlerForTest(t, msh)
b.netMap = nm
b.lastSuggestedExitNode = peer1.StableID()
b.sys.MagicSock.Get().SetLastNetcheckReportForTest(b.ctx, report)
b.SetPrefsForTest(b.pm.CurrentPrefs().AsStruct())
firstExitNode := b.Prefs().ExitNodeID()
newPeer1 := makePeer(1, withCap(26), withSuggest(), withExitRoutes(), withOnline(false), withNodeKey())
updatedNetmap := &netmap.NetworkMap{
Peers: []tailcfg.NodeView{
newPeer1,
peer2,
},
DERPMap: derpMap,
}
b.SetControlClientStatus(b.cc, controlclient.Status{NetMap: updatedNetmap})
lastExitNode := b.Prefs().ExitNodeID()
if firstExitNode == lastExitNode {
t.Errorf("did not switch exit nodes despite auto exit node going offline")
}
}
func TestApplySysPolicy(t *testing.T) {
tests := []struct {
name string
prefs ipn.Prefs
wantPrefs ipn.Prefs
wantAnyChange bool
stringPolicies map[syspolicy.Key]string
}{
{
name: "empty prefs without policies",
},
{
name: "prefs set without policies",
prefs: ipn.Prefs{
ControlURL: "1",
ShieldsUp: true,
ForceDaemon: true,
ExitNodeAllowLANAccess: true,
CorpDNS: true,
RouteAll: true,
},
wantPrefs: ipn.Prefs{
ControlURL: "1",
ShieldsUp: true,
ForceDaemon: true,
ExitNodeAllowLANAccess: true,
CorpDNS: true,
RouteAll: true,
},
},
{
name: "empty prefs with policies",
wantPrefs: ipn.Prefs{
ControlURL: "1",
ShieldsUp: true,
ForceDaemon: true,
ExitNodeAllowLANAccess: true,
CorpDNS: true,
RouteAll: true,
},
wantAnyChange: true,
stringPolicies: map[syspolicy.Key]string{
syspolicy.ControlURL: "1",
syspolicy.EnableIncomingConnections: "never",
syspolicy.EnableServerMode: "always",
syspolicy.ExitNodeAllowLANAccess: "always",
syspolicy.EnableTailscaleDNS: "always",
syspolicy.EnableTailscaleSubnets: "always",
},
},
{
name: "prefs set with matching policies",
prefs: ipn.Prefs{
ControlURL: "1",
ShieldsUp: true,
ForceDaemon: true,
},
wantPrefs: ipn.Prefs{
ControlURL: "1",
ShieldsUp: true,
ForceDaemon: true,
},
stringPolicies: map[syspolicy.Key]string{
syspolicy.ControlURL: "1",
syspolicy.EnableIncomingConnections: "never",
syspolicy.EnableServerMode: "always",
syspolicy.ExitNodeAllowLANAccess: "never",
syspolicy.EnableTailscaleDNS: "never",
syspolicy.EnableTailscaleSubnets: "never",
},
},
{
name: "prefs set with conflicting policies",
prefs: ipn.Prefs{
ControlURL: "1",
ShieldsUp: true,
ForceDaemon: true,
ExitNodeAllowLANAccess: false,
CorpDNS: true,
RouteAll: false,
},
wantPrefs: ipn.Prefs{
ControlURL: "2",
ShieldsUp: false,
ForceDaemon: false,
ExitNodeAllowLANAccess: true,
CorpDNS: false,
RouteAll: true,
},
wantAnyChange: true,
stringPolicies: map[syspolicy.Key]string{
syspolicy.ControlURL: "2",
syspolicy.EnableIncomingConnections: "always",
syspolicy.EnableServerMode: "never",
syspolicy.ExitNodeAllowLANAccess: "always",
syspolicy.EnableTailscaleDNS: "never",
syspolicy.EnableTailscaleSubnets: "always",
},
},
{
name: "prefs set with neutral policies",
prefs: ipn.Prefs{
ControlURL: "1",
ShieldsUp: true,
ForceDaemon: true,
ExitNodeAllowLANAccess: false,
CorpDNS: true,
RouteAll: true,
},
wantPrefs: ipn.Prefs{
ControlURL: "1",
ShieldsUp: true,
ForceDaemon: true,
ExitNodeAllowLANAccess: false,
CorpDNS: true,
RouteAll: true,
},
stringPolicies: map[syspolicy.Key]string{
syspolicy.EnableIncomingConnections: "user-decides",
syspolicy.EnableServerMode: "user-decides",
syspolicy.ExitNodeAllowLANAccess: "user-decides",
syspolicy.EnableTailscaleDNS: "user-decides",
syspolicy.EnableTailscaleSubnets: "user-decides",
},
},
{
name: "ControlURL",
wantPrefs: ipn.Prefs{
ControlURL: "set",
},
wantAnyChange: true,
stringPolicies: map[syspolicy.Key]string{
syspolicy.ControlURL: "set",
},
},
{
name: "enable AutoUpdate apply does not unset check",
prefs: ipn.Prefs{
AutoUpdate: ipn.AutoUpdatePrefs{
Check: true,
Apply: opt.NewBool(false),
},
},
wantPrefs: ipn.Prefs{
AutoUpdate: ipn.AutoUpdatePrefs{
Check: true,
Apply: opt.NewBool(true),
},
},
wantAnyChange: true,
stringPolicies: map[syspolicy.Key]string{
syspolicy.ApplyUpdates: "always",
},
},
{
name: "disable AutoUpdate apply does not unset check",
prefs: ipn.Prefs{
AutoUpdate: ipn.AutoUpdatePrefs{
Check: true,
Apply: opt.NewBool(true),
},
},
wantPrefs: ipn.Prefs{
AutoUpdate: ipn.AutoUpdatePrefs{
Check: true,
Apply: opt.NewBool(false),
},
},
wantAnyChange: true,
stringPolicies: map[syspolicy.Key]string{
syspolicy.ApplyUpdates: "never",
},
},
{
name: "enable AutoUpdate check does not unset apply",
prefs: ipn.Prefs{
AutoUpdate: ipn.AutoUpdatePrefs{
Check: false,
Apply: opt.NewBool(true),
},
},
wantPrefs: ipn.Prefs{
AutoUpdate: ipn.AutoUpdatePrefs{
Check: true,
Apply: opt.NewBool(true),
},
},
wantAnyChange: true,
stringPolicies: map[syspolicy.Key]string{
syspolicy.CheckUpdates: "always",
},
},
{
name: "disable AutoUpdate check does not unset apply",
prefs: ipn.Prefs{
AutoUpdate: ipn.AutoUpdatePrefs{
Check: true,
Apply: opt.NewBool(true),
},
},
wantPrefs: ipn.Prefs{
AutoUpdate: ipn.AutoUpdatePrefs{
Check: false,
Apply: opt.NewBool(true),
},
},
wantAnyChange: true,
stringPolicies: map[syspolicy.Key]string{
syspolicy.CheckUpdates: "never",
},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
msh := &mockSyspolicyHandler{
t: t,
stringPolicies: make(map[syspolicy.Key]*string, len(tt.stringPolicies)),
}
for p, v := range tt.stringPolicies {
v := v // construct a unique pointer for each policy value
msh.stringPolicies[p] = &v
}
syspolicy.SetHandlerForTest(t, msh)
t.Run("unit", func(t *testing.T) {
prefs := tt.prefs.Clone()
gotAnyChange := applySysPolicy(prefs)
if gotAnyChange && prefs.Equals(&tt.prefs) {
t.Errorf("anyChange but prefs is unchanged: %v", prefs.Pretty())
}
if !gotAnyChange && !prefs.Equals(&tt.prefs) {
t.Errorf("!anyChange but prefs changed from %v to %v", tt.prefs.Pretty(), prefs.Pretty())
}
if gotAnyChange != tt.wantAnyChange {
t.Errorf("anyChange=%v, want %v", gotAnyChange, tt.wantAnyChange)
}
if !prefs.Equals(&tt.wantPrefs) {
t.Errorf("prefs=%v, want %v", prefs.Pretty(), tt.wantPrefs.Pretty())
}
})
t.Run("status update", func(t *testing.T) {
// Profile manager fills in blank ControlURL but it's not set
// in most test cases to avoid cluttering them, so adjust for
// that.
usePrefs := tt.prefs.Clone()
if usePrefs.ControlURL == "" {
usePrefs.ControlURL = ipn.DefaultControlURL
}
wantPrefs := tt.wantPrefs.Clone()
if wantPrefs.ControlURL == "" {
wantPrefs.ControlURL = ipn.DefaultControlURL
}
pm := must.Get(newProfileManager(new(mem.Store), t.Logf, new(health.Tracker)))
pm.prefs = usePrefs.View()
b := newTestBackend(t)
b.mu.Lock()
b.pm = pm
b.mu.Unlock()
b.SetControlClientStatus(b.cc, controlclient.Status{})
if !b.Prefs().Equals(wantPrefs.View()) {
t.Errorf("prefs=%v, want %v", b.Prefs().Pretty(), wantPrefs.Pretty())
}
})
})
}
}
func TestPreferencePolicyInfo(t *testing.T) {
tests := []struct {
name string
initialValue bool
wantValue bool
wantChange bool
policyValue string
policyError error
}{
{
name: "force enable modify",
initialValue: false,
wantValue: true,
wantChange: true,
policyValue: "always",
},
{
name: "force enable unchanged",
initialValue: true,
wantValue: true,
policyValue: "always",
},
{
name: "force disable modify",
initialValue: true,
wantValue: false,
wantChange: true,
policyValue: "never",
},
{
name: "force disable unchanged",
initialValue: false,
wantValue: false,
policyValue: "never",
},
{
name: "unforced enabled",
initialValue: true,
wantValue: true,
policyValue: "user-decides",
},
{
name: "unforced disabled",
initialValue: false,
wantValue: false,
policyValue: "user-decides",
},
{
name: "blank enabled",
initialValue: true,
wantValue: true,
policyValue: "",
},
{
name: "blank disabled",
initialValue: false,
wantValue: false,
policyValue: "",
},
{
name: "unset enabled",
initialValue: true,
wantValue: true,
policyError: syspolicy.ErrNoSuchKey,
},
{
name: "unset disabled",
initialValue: false,
wantValue: false,
policyError: syspolicy.ErrNoSuchKey,
},
{
name: "error enabled",
initialValue: true,
wantValue: true,
policyError: errors.New("test error"),
},
{
name: "error disabled",
initialValue: false,
wantValue: false,
policyError: errors.New("test error"),
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
for _, pp := range preferencePolicies {
t.Run(string(pp.key), func(t *testing.T) {
var h syspolicy.Handler
allPolicies := make(map[syspolicy.Key]*string, len(preferencePolicies)+1)
allPolicies[syspolicy.ControlURL] = nil
for _, pp := range preferencePolicies {
allPolicies[pp.key] = nil
}
if tt.policyError != nil {
h = &errorSyspolicyHandler{
t: t,
err: tt.policyError,
key: pp.key,
allowKeys: allPolicies,
}
} else {
msh := &mockSyspolicyHandler{
t: t,
stringPolicies: allPolicies,
failUnknownPolicies: true,
}
msh.stringPolicies[pp.key] = &tt.policyValue
h = msh
}
syspolicy.SetHandlerForTest(t, h)
prefs := defaultPrefs.AsStruct()
pp.set(prefs, tt.initialValue)
gotAnyChange := applySysPolicy(prefs)
if gotAnyChange != tt.wantChange {
t.Errorf("anyChange=%v, want %v", gotAnyChange, tt.wantChange)
}
got := pp.get(prefs.View())
if got != tt.wantValue {
t.Errorf("pref=%v, want %v", got, tt.wantValue)
}
})
}
})
}
}
func TestOnTailnetDefaultAutoUpdate(t *testing.T) {
tests := []struct {
before, after opt.Bool
container opt.Bool
tailnetDefault bool
}{
{
before: opt.Bool(""),
tailnetDefault: true,
after: opt.NewBool(true),
},
{
before: opt.Bool(""),
tailnetDefault: false,
after: opt.NewBool(false),
},
{
before: opt.Bool("unset"),
tailnetDefault: true,
after: opt.NewBool(true),
},
{
before: opt.Bool("unset"),
tailnetDefault: false,
after: opt.NewBool(false),
},
{
before: opt.NewBool(false),
tailnetDefault: true,
after: opt.NewBool(false),
},
{
before: opt.NewBool(true),
tailnetDefault: false,
after: opt.NewBool(true),
},
{
before: opt.Bool(""),
container: opt.NewBool(true),
tailnetDefault: true,
after: opt.Bool(""),
},
{
before: opt.NewBool(false),
container: opt.NewBool(true),
tailnetDefault: true,
after: opt.NewBool(false),
},
{
before: opt.NewBool(true),
container: opt.NewBool(true),
tailnetDefault: false,
after: opt.NewBool(true),
},
}
for _, tt := range tests {
t.Run(fmt.Sprintf("before=%s,after=%s", tt.before, tt.after), func(t *testing.T) {
b := newTestBackend(t)
b.hostinfo = hostinfo.New()
b.hostinfo.Container = tt.container
p := ipn.NewPrefs()
p.AutoUpdate.Apply = tt.before
if err := b.pm.setPrefsNoPermCheck(p.View()); err != nil {
t.Fatal(err)
}
b.onTailnetDefaultAutoUpdate(tt.tailnetDefault)
want := tt.after
// On platforms that don't support auto-update we can never
// transition to auto-updates being enabled. The value should
// remain unchanged after onTailnetDefaultAutoUpdate.
if !clientupdate.CanAutoUpdate() && want.EqualBool(true) {
want = tt.before
}
if got := b.pm.CurrentPrefs().AutoUpdate().Apply; got != want {
t.Errorf("got: %q, want %q", got, want)
}
})
}
}
func TestTCPHandlerForDst(t *testing.T) {
b := newTestBackend(t)
tests := []struct {
desc string
dst string
intercept bool
}{
{
desc: "intercept port 80 (Web UI) on quad100 IPv4",
dst: "100.100.100.100:80",
intercept: true,
},
{
desc: "intercept port 80 (Web UI) on quad100 IPv6",
dst: "[fd7a:115c:a1e0::53]:80",
intercept: true,
},
{
desc: "don't intercept port 80 on local ip",
dst: "100.100.103.100:80",
intercept: false,
},
{
desc: "intercept port 8080 (Taildrive) on quad100 IPv4",
dst: "100.100.100.100:8080",
intercept: true,
},
{
desc: "intercept port 8080 (Taildrive) on quad100 IPv6",
dst: "[fd7a:115c:a1e0::53]:8080",
intercept: true,
},
{
desc: "don't intercept port 8080 on local ip",
dst: "100.100.103.100:8080",
intercept: false,
},
{
desc: "don't intercept port 9080 on quad100 IPv4",
dst: "100.100.100.100:9080",
intercept: false,
},
{
desc: "don't intercept port 9080 on quad100 IPv6",
dst: "[fd7a:115c:a1e0::53]:9080",
intercept: false,
},
{
desc: "don't intercept port 9080 on local ip",
dst: "100.100.103.100:9080",
intercept: false,
},
}
for _, tt := range tests {
t.Run(tt.dst, func(t *testing.T) {
t.Log(tt.desc)
src := netip.MustParseAddrPort("100.100.102.100:51234")
h, _ := b.TCPHandlerForDst(src, netip.MustParseAddrPort(tt.dst))
if !tt.intercept && h != nil {
t.Error("intercepted traffic we shouldn't have")
} else if tt.intercept && h == nil {
t.Error("failed to intercept traffic we should have")
}
})
}
}
func TestDriveManageShares(t *testing.T) {
tests := []struct {
name string
disabled bool
existing []*drive.Share
add *drive.Share
remove string
rename [2]string
expect any
}{
{
name: "append",
existing: []*drive.Share{
{Name: "b"},
{Name: "d"},
},
add: &drive.Share{Name: " E "},
expect: []*drive.Share{
{Name: "b"},
{Name: "d"},
{Name: "e"},
},
},
{
name: "prepend",
existing: []*drive.Share{
{Name: "b"},
{Name: "d"},
},
add: &drive.Share{Name: " A "},
expect: []*drive.Share{
{Name: "a"},
{Name: "b"},
{Name: "d"},
},
},
{
name: "insert",
existing: []*drive.Share{
{Name: "b"},
{Name: "d"},
},
add: &drive.Share{Name: " C "},
expect: []*drive.Share{
{Name: "b"},
{Name: "c"},
{Name: "d"},
},
},
{
name: "replace",
existing: []*drive.Share{
{Name: "b", Path: "i"},
{Name: "d"},
},
add: &drive.Share{Name: " B ", Path: "ii"},
expect: []*drive.Share{
{Name: "b", Path: "ii"},
{Name: "d"},
},
},
{
name: "add_bad_name",
add: &drive.Share{Name: "$"},
expect: drive.ErrInvalidShareName,
},
{
name: "add_disabled",
disabled: true,
add: &drive.Share{Name: "a"},
expect: drive.ErrDriveNotEnabled,
},
{
name: "remove",
existing: []*drive.Share{
{Name: "a"},
{Name: "b"},
{Name: "c"},
},
remove: "b",
expect: []*drive.Share{
{Name: "a"},
{Name: "c"},
},
},
{
name: "remove_non_existing",
existing: []*drive.Share{
{Name: "a"},
{Name: "b"},
{Name: "c"},
},
remove: "D",
expect: os.ErrNotExist,
},
{
name: "remove_disabled",
disabled: true,
remove: "b",
expect: drive.ErrDriveNotEnabled,
},
{
name: "rename",
existing: []*drive.Share{
{Name: "a"},
{Name: "b"},
},
rename: [2]string{"a", " C "},
expect: []*drive.Share{
{Name: "b"},
{Name: "c"},
},
},
{
name: "rename_not_exist",
existing: []*drive.Share{
{Name: "a"},
{Name: "b"},
},
rename: [2]string{"d", "c"},
expect: os.ErrNotExist,
},
{
name: "rename_exists",
existing: []*drive.Share{
{Name: "a"},
{Name: "b"},
},
rename: [2]string{"a", "b"},
expect: os.ErrExist,
},
{
name: "rename_bad_name",
rename: [2]string{"a", "$"},
expect: drive.ErrInvalidShareName,
},
{
name: "rename_disabled",
disabled: true,
rename: [2]string{"a", "c"},
expect: drive.ErrDriveNotEnabled,
},
}
drive.DisallowShareAs = true
t.Cleanup(func() {
drive.DisallowShareAs = false
})
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
b := newTestBackend(t)
b.mu.Lock()
if tt.existing != nil {
b.driveSetSharesLocked(tt.existing)
}
if !tt.disabled {
self := b.netMap.SelfNode.AsStruct()
self.CapMap = tailcfg.NodeCapMap{tailcfg.NodeAttrsTaildriveShare: nil}
b.netMap.SelfNode = self.View()
b.sys.Set(driveimpl.NewFileSystemForRemote(b.logf))
}
b.mu.Unlock()
ctx, cancel := context.WithTimeout(context.Background(), 2*time.Second)
t.Cleanup(cancel)
result := make(chan views.SliceView[*drive.Share, drive.ShareView], 1)
var wg sync.WaitGroup
wg.Add(1)
go b.WatchNotifications(
ctx,
0,
func() { wg.Done() },
func(n *ipn.Notify) bool {
select {
case result <- n.DriveShares:
default:
//
}
return false
},
)
wg.Wait()
var err error
switch {
case tt.add != nil:
err = b.DriveSetShare(tt.add)
case tt.remove != "":
err = b.DriveRemoveShare(tt.remove)
default:
err = b.DriveRenameShare(tt.rename[0], tt.rename[1])
}
switch e := tt.expect.(type) {
case error:
if !errors.Is(err, e) {
t.Errorf("expected error, want: %v got: %v", e, err)
}
case []*drive.Share:
if err != nil {
t.Errorf("unexpected error: %v", err)
} else {
r := <-result
got, err := json.MarshalIndent(r, "", " ")
if err != nil {
t.Fatalf("can't marshal got: %v", err)
}
want, err := json.MarshalIndent(e, "", " ")
if err != nil {
t.Fatalf("can't marshal want: %v", err)
}
if diff := cmp.Diff(string(got), string(want)); diff != "" {
t.Errorf("wrong shares; (-got+want):%v", diff)
}
}
}
})
}
}
func TestValidPopBrowserURL(t *testing.T) {
b := newTestBackend(t)
tests := []struct {
desc string
controlURL string
popBrowserURL string
want bool
}{
{"saas_login", "https://login.tailscale.com", "https://login.tailscale.com/a/foo", true},
{"saas_controlplane", "https://controlplane.tailscale.com", "https://controlplane.tailscale.com/a/foo", true},
{"saas_root", "https://login.tailscale.com", "https://tailscale.com/", true},
{"saas_bad_hostname", "https://login.tailscale.com", "https://example.com/a/foo", false},
{"localhost", "http://localhost", "http://localhost/a/foo", true},
{"custom_control_url_https", "https://example.com", "https://example.com/a/foo", true},
{"custom_control_url_https_diff_domain", "https://example.com", "https://other.com/a/foo", true},
{"custom_control_url_http", "http://example.com", "http://example.com/a/foo", true},
{"custom_control_url_http_diff_domain", "http://example.com", "http://other.com/a/foo", true},
{"bad_scheme", "https://example.com", "http://example.com/a/foo", false},
}
for _, tt := range tests {
t.Run(tt.desc, func(t *testing.T) {
if _, err := b.EditPrefs(&ipn.MaskedPrefs{
ControlURLSet: true,
Prefs: ipn.Prefs{
ControlURL: tt.controlURL,
},
}); err != nil {
t.Fatal(err)
}
got := b.validPopBrowserURL(tt.popBrowserURL)
if got != tt.want {
t.Errorf("got %v, want %v", got, tt.want)
}
})
}
}
func TestRoundTraffic(t *testing.T) {
tests := []struct {
name string
bytes int64
want float64
}{
{name: "under 5 bytes", bytes: 4, want: 4},
{name: "under 1000 bytes", bytes: 987, want: 990},
{name: "under 10_000 bytes", bytes: 8875, want: 8900},
{name: "under 100_000 bytes", bytes: 77777, want: 78000},
{name: "under 1_000_000 bytes", bytes: 666523, want: 670000},
{name: "under 10_000_000 bytes", bytes: 22556677, want: 23000000},
{name: "under 1_000_000_000 bytes", bytes: 1234234234, want: 1200000000},
{name: "under 1_000_000_000 bytes", bytes: 123423423499, want: 123400000000},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
if result := roundTraffic(tt.bytes); result != tt.want {
t.Errorf("unexpected rounding got %v want %v", result, tt.want)
}
})
}
}
func (b *LocalBackend) SetPrefsForTest(newp *ipn.Prefs) {
if newp == nil {
panic("SetPrefsForTest got nil prefs")
}
unlock := b.lockAndGetUnlock()
defer unlock()
b.setPrefsLockedOnEntry(newp, unlock)
}
type peerOptFunc func(*tailcfg.Node)
func makePeer(id tailcfg.NodeID, opts ...peerOptFunc) tailcfg.NodeView {
node := &tailcfg.Node{
ID: id,
StableID: tailcfg.StableNodeID(fmt.Sprintf("stable%d", id)),
Name: fmt.Sprintf("peer%d", id),
DERP: fmt.Sprintf("127.3.3.40:%d", id),
}
for _, opt := range opts {
opt(node)
}
return node.View()
}
func withName(name string) peerOptFunc {
return func(n *tailcfg.Node) {
n.Name = name
}
}
func withDERP(region int) peerOptFunc {
return func(n *tailcfg.Node) {
n.DERP = fmt.Sprintf("127.3.3.40:%d", region)
}
}
func withoutDERP() peerOptFunc {
return func(n *tailcfg.Node) {
n.DERP = ""
}
}
func withLocation(loc tailcfg.LocationView) peerOptFunc {
return func(n *tailcfg.Node) {
var hi *tailcfg.Hostinfo
if n.Hostinfo.Valid() {
hi = n.Hostinfo.AsStruct()
} else {
hi = new(tailcfg.Hostinfo)
}
hi.Location = loc.AsStruct()
n.Hostinfo = hi.View()
}
}
func withExitRoutes() peerOptFunc {
return func(n *tailcfg.Node) {
n.AllowedIPs = append(n.AllowedIPs, tsaddr.ExitRoutes()...)
}
}
func withSuggest() peerOptFunc {
return func(n *tailcfg.Node) {
mak.Set(&n.CapMap, tailcfg.NodeAttrSuggestExitNode, []tailcfg.RawMessage{})
}
}
func withCap(version tailcfg.CapabilityVersion) peerOptFunc {
return func(n *tailcfg.Node) {
n.Cap = version
}
}
func withOnline(isOnline bool) peerOptFunc {
return func(n *tailcfg.Node) {
n.Online = &isOnline
}
}
func withNodeKey() peerOptFunc {
return func(n *tailcfg.Node) {
n.Key = key.NewNode().Public()
}
}
func deterministicRegionForTest(t testing.TB, want views.Slice[int], use int) selectRegionFunc {
t.Helper()
if !views.SliceContains(want, use) {
t.Errorf("invalid test: use %v is not in want %v", use, want)
}
return func(got views.Slice[int]) int {
if !views.SliceEqualAnyOrder(got, want) {
t.Errorf("candidate regions = %v, want %v", got, want)
}
return use
}
}
func deterministicNodeForTest(t testing.TB, want views.Slice[tailcfg.StableNodeID], wantLast tailcfg.StableNodeID, use tailcfg.StableNodeID) selectNodeFunc {
t.Helper()
if !views.SliceContains(want, use) {
t.Errorf("invalid test: use %v is not in want %v", use, want)
}
return func(got views.Slice[tailcfg.NodeView], last tailcfg.StableNodeID) tailcfg.NodeView {
var ret tailcfg.NodeView
gotIDs := make([]tailcfg.StableNodeID, got.Len())
for i := range got.Len() {
nv := got.At(i)
if !nv.Valid() {
t.Fatalf("invalid node at index %v", i)
}
gotIDs[i] = nv.StableID()
if nv.StableID() == use {
ret = nv
}
}
if !views.SliceEqualAnyOrder(views.SliceOf(gotIDs), want) {
t.Errorf("candidate nodes = %v, want %v", gotIDs, want)
}
if last != wantLast {
t.Errorf("last node = %v, want %v", last, wantLast)
}
if !ret.Valid() {
t.Fatalf("did not find matching node in %v, want %v", gotIDs, use)
}
return ret
}
}
func TestSuggestExitNode(t *testing.T) {
t.Parallel()
defaultDERPMap := &tailcfg.DERPMap{
Regions: map[int]*tailcfg.DERPRegion{
1: {
Latitude: 32,
Longitude: -97,
},
2: {},
3: {},
},
}
preferred1Report := &netcheck.Report{
RegionLatency: map[int]time.Duration{
1: 10 * time.Millisecond,
2: 20 * time.Millisecond,
3: 30 * time.Millisecond,
},
PreferredDERP: 1,
}
noLatency1Report := &netcheck.Report{
RegionLatency: map[int]time.Duration{
1: 0,
2: 0,
3: 0,
},
PreferredDERP: 1,
}
preferredNoneReport := &netcheck.Report{
RegionLatency: map[int]time.Duration{
1: 10 * time.Millisecond,
2: 20 * time.Millisecond,
3: 30 * time.Millisecond,
},
PreferredDERP: 0,
}
dallas := tailcfg.Location{
Latitude: 32.779167,
Longitude: -96.808889,
Priority: 100,
}
sanJose := tailcfg.Location{
Latitude: 37.3382082,
Longitude: -121.8863286,
Priority: 20,
}
fortWorth := tailcfg.Location{
Latitude: 32.756389,
Longitude: -97.3325,
Priority: 150,
}
fortWorthLowPriority := tailcfg.Location{
Latitude: 32.756389,
Longitude: -97.3325,
Priority: 100,
}
peer1 := makePeer(1,
withExitRoutes(),
withSuggest())
peer2DERP1 := makePeer(2,
withDERP(1),
withExitRoutes(),
withSuggest())
peer3 := makePeer(3,
withExitRoutes(),
withSuggest())
peer4DERP3 := makePeer(4,
withDERP(3),
withExitRoutes(),
withSuggest())
dallasPeer5 := makePeer(5,
withName("Dallas"),
withoutDERP(),
withExitRoutes(),
withSuggest(),
withLocation(dallas.View()))
sanJosePeer6 := makePeer(6,
withName("San Jose"),
withoutDERP(),
withExitRoutes(),
withSuggest(),
withLocation(sanJose.View()))
fortWorthPeer7 := makePeer(7,
withName("Fort Worth"),
withoutDERP(),
withExitRoutes(),
withSuggest(),
withLocation(fortWorth.View()))
fortWorthPeer8LowPriority := makePeer(8,
withName("Fort Worth Low"),
withoutDERP(),
withExitRoutes(),
withSuggest(),
withLocation(fortWorthLowPriority.View()))
selfNode := tailcfg.Node{
Addresses: []netip.Prefix{
netip.MustParsePrefix("100.64.1.1/32"),
netip.MustParsePrefix("fe70::1/128"),
},
}
defaultNetmap := &netmap.NetworkMap{
SelfNode: selfNode.View(),
DERPMap: defaultDERPMap,
Peers: []tailcfg.NodeView{
peer2DERP1,
peer3,
},
}
locationNetmap := &netmap.NetworkMap{
SelfNode: selfNode.View(),
DERPMap: defaultDERPMap,
Peers: []tailcfg.NodeView{
dallasPeer5,
sanJosePeer6,
},
}
largeNetmap := &netmap.NetworkMap{
SelfNode: selfNode.View(),
DERPMap: defaultDERPMap,
Peers: []tailcfg.NodeView{
peer1,
peer2DERP1,
peer3,
peer4DERP3,
dallasPeer5,
sanJosePeer6,
fortWorthPeer7,
},
}
tests := []struct {
name string
lastReport *netcheck.Report
netMap *netmap.NetworkMap
lastSuggestion tailcfg.StableNodeID
allowPolicy []tailcfg.StableNodeID
wantRegions []int
useRegion int
wantNodes []tailcfg.StableNodeID
wantID tailcfg.StableNodeID
wantName string
wantLocation tailcfg.LocationView
wantError error
}{
{
name: "2 exit nodes in same region",
lastReport: preferred1Report,
netMap: &netmap.NetworkMap{
SelfNode: selfNode.View(),
DERPMap: defaultDERPMap,
Peers: []tailcfg.NodeView{
peer1,
peer2DERP1,
},
},
wantNodes: []tailcfg.StableNodeID{
"stable1",
"stable2",
},
wantName: "peer1",
wantID: "stable1",
},
{
name: "2 exit nodes different regions unknown latency",
lastReport: noLatency1Report,
netMap: defaultNetmap,
wantRegions: []int{1, 3}, // the only regions with peers
useRegion: 1,
wantName: "peer2",
wantID: "stable2",
},
{
name: "2 derp based exit nodes, different regions, equal latency",
lastReport: &netcheck.Report{
RegionLatency: map[int]time.Duration{
1: 10,
2: 20,
3: 10,
},
PreferredDERP: 1,
},
netMap: &netmap.NetworkMap{
SelfNode: selfNode.View(),
DERPMap: defaultDERPMap,
Peers: []tailcfg.NodeView{
peer1,
peer3,
},
},
wantRegions: []int{1, 2},
useRegion: 1,
wantName: "peer1",
wantID: "stable1",
},
{
name: "mullvad nodes, no derp based exit nodes",
lastReport: noLatency1Report,
netMap: locationNetmap,
wantID: "stable5",
wantLocation: dallas.View(),
wantName: "Dallas",
},
{
name: "nearby mullvad nodes with different priorities",
lastReport: noLatency1Report,
netMap: &netmap.NetworkMap{
SelfNode: selfNode.View(),
DERPMap: defaultDERPMap,
Peers: []tailcfg.NodeView{
dallasPeer5,
sanJosePeer6,
fortWorthPeer7,
},
},
wantID: "stable7",
wantLocation: fortWorth.View(),
wantName: "Fort Worth",
},
{
name: "nearby mullvad nodes with same priorities",
lastReport: noLatency1Report,
netMap: &netmap.NetworkMap{
SelfNode: selfNode.View(),
DERPMap: defaultDERPMap,
Peers: []tailcfg.NodeView{
dallasPeer5,
sanJosePeer6,
fortWorthPeer8LowPriority,
},
},
wantNodes: []tailcfg.StableNodeID{"stable5", "stable8"},
wantID: "stable5",
wantLocation: dallas.View(),
wantName: "Dallas",
},
{
name: "mullvad nodes, remaining node is not in preferred derp",
lastReport: noLatency1Report,
netMap: &netmap.NetworkMap{
SelfNode: selfNode.View(),
DERPMap: defaultDERPMap,
Peers: []tailcfg.NodeView{
dallasPeer5,
sanJosePeer6,
peer4DERP3,
},
},
useRegion: 3,
wantID: "stable4",
wantName: "peer4",
},
{
name: "no peers",
lastReport: noLatency1Report,
netMap: &netmap.NetworkMap{
SelfNode: selfNode.View(),
DERPMap: defaultDERPMap,
},
},
{
name: "nil report",
lastReport: nil,
netMap: largeNetmap,
wantError: ErrNoPreferredDERP,
},
{
name: "no preferred derp region",
lastReport: preferredNoneReport,
netMap: &netmap.NetworkMap{
SelfNode: selfNode.View(),
DERPMap: defaultDERPMap,
},
wantError: ErrNoPreferredDERP,
},
{
name: "nil netmap",
lastReport: noLatency1Report,
netMap: nil,
wantError: ErrNoPreferredDERP,
},
{
name: "nil derpmap",
lastReport: noLatency1Report,
netMap: &netmap.NetworkMap{
SelfNode: selfNode.View(),
DERPMap: nil,
Peers: []tailcfg.NodeView{
dallasPeer5,
},
},
wantError: ErrNoPreferredDERP,
},
{
name: "missing suggestion capability",
lastReport: noLatency1Report,
netMap: &netmap.NetworkMap{
SelfNode: selfNode.View(),
DERPMap: defaultDERPMap,
Peers: []tailcfg.NodeView{
makePeer(1, withExitRoutes()),
makePeer(2, withLocation(dallas.View()), withExitRoutes()),
},
},
},
{
name: "prefer last node",
lastReport: preferred1Report,
netMap: &netmap.NetworkMap{
SelfNode: selfNode.View(),
DERPMap: defaultDERPMap,
Peers: []tailcfg.NodeView{
peer1,
peer2DERP1,
},
},
lastSuggestion: "stable2",
wantNodes: []tailcfg.StableNodeID{
"stable1",
"stable2",
},
wantName: "peer2",
wantID: "stable2",
},
{
name: "found better derp node",
lastSuggestion: "stable3",
lastReport: preferred1Report,
netMap: defaultNetmap,
wantID: "stable2",
wantName: "peer2",
},
{
name: "prefer last mullvad node",
lastSuggestion: "stable2",
lastReport: preferred1Report,
netMap: &netmap.NetworkMap{
SelfNode: selfNode.View(),
DERPMap: defaultDERPMap,
Peers: []tailcfg.NodeView{
dallasPeer5,
sanJosePeer6,
fortWorthPeer8LowPriority,
},
},
wantNodes: []tailcfg.StableNodeID{"stable5", "stable8"},
wantID: "stable5",
wantName: "Dallas",
wantLocation: dallas.View(),
},
{
name: "prefer better mullvad node",
lastSuggestion: "stable2",
lastReport: preferred1Report,
netMap: &netmap.NetworkMap{
SelfNode: selfNode.View(),
DERPMap: defaultDERPMap,
Peers: []tailcfg.NodeView{
dallasPeer5,
sanJosePeer6,
fortWorthPeer7,
},
},
wantNodes: []tailcfg.StableNodeID{"stable7"},
wantID: "stable7",
wantName: "Fort Worth",
wantLocation: fortWorth.View(),
},
{
name: "large netmap",
lastReport: preferred1Report,
netMap: largeNetmap,
wantNodes: []tailcfg.StableNodeID{"stable1", "stable2"},
wantID: "stable2",
wantName: "peer2",
},
{
name: "no allowed suggestions",
lastReport: preferred1Report,
netMap: largeNetmap,
allowPolicy: []tailcfg.StableNodeID{},
},
{
name: "only derp suggestions",
lastReport: preferred1Report,
netMap: largeNetmap,
allowPolicy: []tailcfg.StableNodeID{"stable1", "stable2", "stable3"},
wantNodes: []tailcfg.StableNodeID{"stable1", "stable2"},
wantID: "stable2",
wantName: "peer2",
},
{
name: "only mullvad suggestions",
lastReport: preferred1Report,
netMap: largeNetmap,
allowPolicy: []tailcfg.StableNodeID{"stable5", "stable6", "stable7"},
wantID: "stable7",
wantName: "Fort Worth",
wantLocation: fortWorth.View(),
},
{
name: "only worst derp",
lastReport: preferred1Report,
netMap: largeNetmap,
allowPolicy: []tailcfg.StableNodeID{"stable3"},
wantID: "stable3",
wantName: "peer3",
},
{
name: "only worst mullvad",
lastReport: preferred1Report,
netMap: largeNetmap,
allowPolicy: []tailcfg.StableNodeID{"stable6"},
wantID: "stable6",
wantName: "San Jose",
wantLocation: sanJose.View(),
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
wantRegions := tt.wantRegions
if wantRegions == nil {
wantRegions = []int{tt.useRegion}
}
selectRegion := deterministicRegionForTest(t, views.SliceOf(wantRegions), tt.useRegion)
wantNodes := tt.wantNodes
if wantNodes == nil {
wantNodes = []tailcfg.StableNodeID{tt.wantID}
}
selectNode := deterministicNodeForTest(t, views.SliceOf(wantNodes), tt.lastSuggestion, tt.wantID)
var allowList set.Set[tailcfg.StableNodeID]
if tt.allowPolicy != nil {
allowList = set.SetOf(tt.allowPolicy)
}
got, err := suggestExitNode(tt.lastReport, tt.netMap, tt.lastSuggestion, selectRegion, selectNode, allowList)
if got.Name != tt.wantName {
t.Errorf("name=%v, want %v", got.Name, tt.wantName)
}
if got.ID != tt.wantID {
t.Errorf("ID=%v, want %v", got.ID, tt.wantID)
}
if tt.wantError == nil && err != nil {
t.Errorf("err=%v, want no error", err)
}
if tt.wantError != nil && !errors.Is(err, tt.wantError) {
t.Errorf("err=%v, want %v", err, tt.wantError)
}
if !reflect.DeepEqual(got.Location, tt.wantLocation) {
t.Errorf("location=%v, want %v", got.Location, tt.wantLocation)
}
})
}
}
func TestSuggestExitNodePickWeighted(t *testing.T) {
location10 := tailcfg.Location{
Priority: 10,
}
location20 := tailcfg.Location{
Priority: 20,
}
tests := []struct {
name string
candidates []tailcfg.NodeView
wantIDs []tailcfg.StableNodeID
}{
{
name: "different priorities",
candidates: []tailcfg.NodeView{
makePeer(2, withExitRoutes(), withLocation(location20.View())),
makePeer(3, withExitRoutes(), withLocation(location10.View())),
},
wantIDs: []tailcfg.StableNodeID{"stable2"},
},
{
name: "same priorities",
candidates: []tailcfg.NodeView{
makePeer(2, withExitRoutes(), withLocation(location10.View())),
makePeer(3, withExitRoutes(), withLocation(location10.View())),
},
wantIDs: []tailcfg.StableNodeID{"stable2", "stable3"},
},
{
name: "<1 candidates",
candidates: []tailcfg.NodeView{},
},
{
name: "1 candidate",
candidates: []tailcfg.NodeView{
makePeer(2, withExitRoutes(), withLocation(location20.View())),
},
wantIDs: []tailcfg.StableNodeID{"stable2"},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
got := pickWeighted(tt.candidates)
gotIDs := make([]tailcfg.StableNodeID, 0, len(got))
for _, n := range got {
if !n.Valid() {
gotIDs = append(gotIDs, "<invalid>")
continue
}
gotIDs = append(gotIDs, n.StableID())
}
if !views.SliceEqualAnyOrder(views.SliceOf(gotIDs), views.SliceOf(tt.wantIDs)) {
t.Errorf("node IDs = %v, want %v", gotIDs, tt.wantIDs)
}
})
}
}
func TestSuggestExitNodeLongLatDistance(t *testing.T) {
tests := []struct {
name string
fromLat float64
fromLong float64
toLat float64
toLong float64
want float64
}{
{
name: "zero values",
fromLat: 0,
fromLong: 0,
toLat: 0,
toLong: 0,
want: 0,
},
{
name: "valid values",
fromLat: 40.73061,
fromLong: -73.935242,
toLat: 37.3382082,
toLong: -121.8863286,
want: 4117266.873301274,
},
{
name: "valid values, locations in north and south of equator",
fromLat: 40.73061,
fromLong: -73.935242,
toLat: -33.861481,
toLong: 151.205475,
want: 15994089.144368416,
},
}
// The wanted values are computed using a more precise algorithm using the WGS84 model but
// longLatDistance uses a spherical approximation for simplicity. To account for this, we allow for
// 10km of error.
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
got := longLatDistance(tt.fromLat, tt.fromLong, tt.toLat, tt.toLong)
const maxError = 10000 // 10km
if math.Abs(got-tt.want) > maxError {
t.Errorf("distance=%vm, want within %vm of %vm", got, maxError, tt.want)
}
})
}
}
func TestMinLatencyDERPregion(t *testing.T) {
tests := []struct {
name string
regions []int
report *netcheck.Report
wantRegion int
}{
{
name: "regions, no latency values",
regions: []int{1, 2, 3},
wantRegion: 0,
report: &netcheck.Report{},
},
{
name: "regions, different latency values",
regions: []int{1, 2, 3},
wantRegion: 2,
report: &netcheck.Report{
RegionLatency: map[int]time.Duration{
1: 10 * time.Millisecond,
2: 5 * time.Millisecond,
3: 30 * time.Millisecond,
},
},
},
{
name: "regions, same values",
regions: []int{1, 2, 3},
wantRegion: 1,
report: &netcheck.Report{
RegionLatency: map[int]time.Duration{
1: 10 * time.Millisecond,
2: 10 * time.Millisecond,
3: 10 * time.Millisecond,
},
},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
got := minLatencyDERPRegion(tt.regions, tt.report)
if got != tt.wantRegion {
t.Errorf("got region %v want region %v", got, tt.wantRegion)
}
})
}
}
func TestShouldAutoExitNode(t *testing.T) {
tests := []struct {
name string
exitNodeIDPolicyValue string
expectedBool bool
}{
{
name: "auto:any",
exitNodeIDPolicyValue: "auto:any",
expectedBool: true,
},
{
name: "no auto prefix",
exitNodeIDPolicyValue: "foo",
expectedBool: false,
},
{
name: "auto prefix but empty suffix",
exitNodeIDPolicyValue: "auto:",
expectedBool: false,
},
{
name: "auto prefix no colon",
exitNodeIDPolicyValue: "auto",
expectedBool: false,
},
{
name: "auto prefix invalid suffix",
exitNodeIDPolicyValue: "auto:foo",
expectedBool: false,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
msh := &mockSyspolicyHandler{
t: t,
stringPolicies: map[syspolicy.Key]*string{
syspolicy.ExitNodeID: ptr.To(tt.exitNodeIDPolicyValue),
},
}
syspolicy.SetHandlerForTest(t, msh)
got := shouldAutoExitNode()
if got != tt.expectedBool {
t.Fatalf("expected %v got %v for %v policy value", tt.expectedBool, got, tt.exitNodeIDPolicyValue)
}
})
}
}
func TestEnableAutoUpdates(t *testing.T) {
lb := newTestLocalBackend(t)
_, err := lb.EditPrefs(&ipn.MaskedPrefs{
AutoUpdateSet: ipn.AutoUpdatePrefsMask{
ApplySet: true,
},
Prefs: ipn.Prefs{
AutoUpdate: ipn.AutoUpdatePrefs{
Apply: opt.NewBool(true),
},
},
})
// Enabling may fail, depending on which environment we are running this
// test in.
wantErr := !clientupdate.CanAutoUpdate()
gotErr := err != nil
if gotErr != wantErr {
t.Fatalf("enabling auto-updates: got error: %v (%v); want error: %v", gotErr, err, wantErr)
}
// Disabling should always succeed.
if _, err := lb.EditPrefs(&ipn.MaskedPrefs{
AutoUpdateSet: ipn.AutoUpdatePrefsMask{
ApplySet: true,
},
Prefs: ipn.Prefs{
AutoUpdate: ipn.AutoUpdatePrefs{
Apply: opt.NewBool(false),
},
},
}); err != nil {
t.Fatalf("disabling auto-updates: got error: %v", err)
}
}
func TestReadWriteRouteInfo(t *testing.T) {
// set up a backend with more than one profile
b := newTestBackend(t)
prof1 := ipn.LoginProfile{ID: "id1", Key: "key1"}
prof2 := ipn.LoginProfile{ID: "id2", Key: "key2"}
b.pm.knownProfiles["id1"] = &prof1
b.pm.knownProfiles["id2"] = &prof2
b.pm.currentProfile = &prof1
// set up routeInfo
ri1 := &appc.RouteInfo{}
ri1.Wildcards = []string{"1"}
ri2 := &appc.RouteInfo{}
ri2.Wildcards = []string{"2"}
// read before write
readRi, err := b.readRouteInfoLocked()
if readRi != nil {
t.Fatalf("read before writing: want nil, got %v", readRi)
}
if err != ipn.ErrStateNotExist {
t.Fatalf("read before writing: want %v, got %v", ipn.ErrStateNotExist, err)
}
// write the first routeInfo
if err := b.storeRouteInfo(ri1); err != nil {
t.Fatal(err)
}
// write the other routeInfo as the other profile
if err := b.pm.SwitchProfile("id2"); err != nil {
t.Fatal(err)
}
if err := b.storeRouteInfo(ri2); err != nil {
t.Fatal(err)
}
// read the routeInfo of the first profile
if err := b.pm.SwitchProfile("id1"); err != nil {
t.Fatal(err)
}
readRi, err = b.readRouteInfoLocked()
if err != nil {
t.Fatal(err)
}
if !slices.Equal(readRi.Wildcards, ri1.Wildcards) {
t.Fatalf("read prof1 routeInfo wildcards: want %v, got %v", ri1.Wildcards, readRi.Wildcards)
}
// read the routeInfo of the second profile
if err := b.pm.SwitchProfile("id2"); err != nil {
t.Fatal(err)
}
readRi, err = b.readRouteInfoLocked()
if err != nil {
t.Fatal(err)
}
if !slices.Equal(readRi.Wildcards, ri2.Wildcards) {
t.Fatalf("read prof2 routeInfo wildcards: want %v, got %v", ri2.Wildcards, readRi.Wildcards)
}
}
func TestFillAllowedSuggestions(t *testing.T) {
tests := []struct {
name string
allowPolicy []string
want []tailcfg.StableNodeID
}{
{
name: "unset",
},
{
name: "zero",
allowPolicy: []string{},
want: []tailcfg.StableNodeID{},
},
{
name: "one",
allowPolicy: []string{"one"},
want: []tailcfg.StableNodeID{"one"},
},
{
name: "many",
allowPolicy: []string{"one", "two", "three", "four"},
want: []tailcfg.StableNodeID{"one", "three", "four", "two"}, // order should not matter
},
{
name: "preserve case",
allowPolicy: []string{"ABC", "def", "gHiJ"},
want: []tailcfg.StableNodeID{"ABC", "def", "gHiJ"},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
mh := mockSyspolicyHandler{
t: t,
}
if tt.allowPolicy != nil {
mh.stringArrayPolicies = map[syspolicy.Key][]string{
syspolicy.AllowedSuggestedExitNodes: tt.allowPolicy,
}
}
syspolicy.SetHandlerForTest(t, &mh)
got := fillAllowedSuggestions()
if got == nil {
if tt.want == nil {
return
}
t.Errorf("got nil, want %v", tt.want)
}
if tt.want == nil {
t.Errorf("got %v, want nil", got)
}
if !got.Equal(set.SetOf(tt.want)) {
t.Errorf("got %v, want %v", got, tt.want)
}
})
}
}
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