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tailscale/ipn/ipnlocal/local_test.go
Nick Khyl 80b2b45d60 ipn/ipnlocal: refactor and cleanup profileManager 
In preparation for multi-user and unattended mode improvements, we are
refactoring and cleaning up `ipn/ipnlocal.profileManager`. The concept of the
"current user", which is only relevant on Windows, is being deprecated and will
soon be removed to allow more than one Windows user to connect and utilize
`LocalBackend` according to that user's access rights to the device and specific
Tailscale profiles.

We plan to pass the user's identity down to the `profileManager`, where it can
be used to determine the user's access rights to a given `LoginProfile`. While
the new permission model in `ipnauth` requires more work and is currently
blocked pending PR reviews, we are updating the `profileManager` to reduce its
reliance on the concept of a single OS user being connected to the backend at
the same time.

We extract the switching to the default Tailscale profile, which may also
trigger legacy profile migration, from `profileManager.SetCurrentUserID`. This
introduces `profileManager.DefaultUserProfileID`, which returns the default
profile ID for the current user, and `profileManager.SwitchToDefaultProfile`,
which is essentially a shorthand for `pm.SwitchProfile(pm.DefaultUserProfileID())`.
Both methods will eventually be updated to accept the user's identity and
utilize that user's default profile.

We make access checks more explicit by introducing the `profileManager.checkProfileAccess`
method. The current implementation continues to use `profileManager.currentUserID`
and `LoginProfile.LocalUserID` to determine whether access to a given profile
should be granted. This will be updated to utilize the `ipnauth` package and the
new permissions model once it's ready. We also expand access checks to be used
more widely in the `profileManager`, not just when switching or listing
profiles. This includes access checks in methods like `SetPrefs` and, most notably,
`DeleteProfile` and `DeleteAllProfiles`, preventing unprivileged Windows users
from deleting Tailscale profiles owned by other users on the same device,
including profiles owned by local admins.

We extract `profileManager.ProfilePrefs` and `profileManager.SetProfilePrefs`
methods that can be used to get and set preferences of a given `LoginProfile` if
`profileManager.checkProfileAccess` permits access to it.

We also update `profileManager.setUnattendedModeAsConfigured` to always enable
unattended mode on Windows if `Prefs.ForceDaemon` is true in the current
`LoginProfile`, even if `profileManager.currentUserID` is `""`. This facilitates
enabling unattended mode via `tailscale up --unattended` even if
`tailscale-ipn.exe` is not running, such as when a Group Policy or MDM-deployed
script runs at boot time, or when Tailscale is used on a Server Code or otherwise
headless Windows environments. See #12239, #2137, #3186 and
https://github.com/tailscale/tailscale/pull/6255#issuecomment-2016623838 for
details.

Fixes #12239
Updates tailscale/corp#18342
Updates #3186
Updates #2137

Signed-off-by: Nick Khyl <nickk@tailscale.com>
2024-08-28 14:42:35 -05:00

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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())
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(), 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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