mirror of
https://github.com/tailscale/tailscale.git
synced 2024-11-25 19:15:34 +00:00
bd0c32ca21
This test is not regularly passing on CI, but seems to pass reliably locally. Needs deeper debugging. Updates #7876 Signed-off-by: James Tucker <jftucker@gmail.com>
584 lines
14 KiB
Go
584 lines
14 KiB
Go
// Copyright (c) Tailscale Inc & AUTHORS
|
|
// SPDX-License-Identifier: BSD-3-Clause
|
|
|
|
package tsnet
|
|
|
|
import (
|
|
"bufio"
|
|
"context"
|
|
"crypto/ecdsa"
|
|
"crypto/elliptic"
|
|
"crypto/rand"
|
|
"crypto/tls"
|
|
"crypto/x509"
|
|
"crypto/x509/pkix"
|
|
"errors"
|
|
"flag"
|
|
"fmt"
|
|
"io"
|
|
"io/ioutil"
|
|
"math/big"
|
|
"net"
|
|
"net/http"
|
|
"net/http/httptest"
|
|
"net/netip"
|
|
"os"
|
|
"path/filepath"
|
|
"runtime"
|
|
"strings"
|
|
"sync"
|
|
"testing"
|
|
"time"
|
|
|
|
"golang.org/x/net/proxy"
|
|
"tailscale.com/ipn"
|
|
"tailscale.com/ipn/store/mem"
|
|
"tailscale.com/net/netns"
|
|
"tailscale.com/tailcfg"
|
|
"tailscale.com/tstest"
|
|
"tailscale.com/tstest/integration"
|
|
"tailscale.com/tstest/integration/testcontrol"
|
|
"tailscale.com/types/logger"
|
|
"tailscale.com/util/must"
|
|
)
|
|
|
|
// TestListener_Server ensures that the listener type always keeps the Server
|
|
// method, which is used by some external applications to identify a tsnet.Listener
|
|
// from other net.Listeners, as well as access the underlying Server.
|
|
func TestListener_Server(t *testing.T) {
|
|
s := &Server{}
|
|
ln := listener{s: s}
|
|
if ln.Server() != s {
|
|
t.Errorf("listener.Server() returned %v, want %v", ln.Server(), s)
|
|
}
|
|
}
|
|
|
|
func TestListenerPort(t *testing.T) {
|
|
errNone := errors.New("sentinel start error")
|
|
|
|
tests := []struct {
|
|
network string
|
|
addr string
|
|
wantErr bool
|
|
}{
|
|
{"tcp", ":80", false},
|
|
{"foo", ":80", true},
|
|
{"tcp", ":http", false}, // built-in name to Go; doesn't require cgo, /etc/services
|
|
{"tcp", ":https", false}, // built-in name to Go; doesn't require cgo, /etc/services
|
|
{"tcp", ":gibberishsdlkfj", true},
|
|
{"tcp", ":%!d(string=80)", true}, // issue 6201
|
|
{"udp", ":80", false},
|
|
{"udp", "100.102.104.108:80", false},
|
|
{"udp", "not-an-ip:80", true},
|
|
{"udp4", ":80", false},
|
|
{"udp4", "100.102.104.108:80", false},
|
|
{"udp4", "not-an-ip:80", true},
|
|
|
|
// Verify network type matches IP
|
|
{"tcp4", "1.2.3.4:80", false},
|
|
{"tcp6", "1.2.3.4:80", true},
|
|
{"tcp4", "[12::34]:80", true},
|
|
{"tcp6", "[12::34]:80", false},
|
|
}
|
|
for _, tt := range tests {
|
|
s := &Server{}
|
|
s.initOnce.Do(func() { s.initErr = errNone })
|
|
_, err := s.Listen(tt.network, tt.addr)
|
|
gotErr := err != nil && err != errNone
|
|
if gotErr != tt.wantErr {
|
|
t.Errorf("Listen(%q, %q) error = %v, want %v", tt.network, tt.addr, gotErr, tt.wantErr)
|
|
}
|
|
}
|
|
}
|
|
|
|
var verboseDERP = flag.Bool("verbose-derp", false, "if set, print DERP and STUN logs")
|
|
var verboseNodes = flag.Bool("verbose-nodes", false, "if set, print tsnet.Server logs")
|
|
|
|
func startControl(t *testing.T) (controlURL string) {
|
|
// Corp#4520: don't use netns for tests.
|
|
netns.SetEnabled(false)
|
|
t.Cleanup(func() {
|
|
netns.SetEnabled(true)
|
|
})
|
|
|
|
derpLogf := logger.Discard
|
|
if *verboseDERP {
|
|
derpLogf = t.Logf
|
|
}
|
|
derpMap := integration.RunDERPAndSTUN(t, derpLogf, "127.0.0.1")
|
|
control := &testcontrol.Server{
|
|
DERPMap: derpMap,
|
|
DNSConfig: &tailcfg.DNSConfig{
|
|
Proxied: true,
|
|
},
|
|
MagicDNSDomain: "tail-scale.ts.net",
|
|
}
|
|
control.HTTPTestServer = httptest.NewUnstartedServer(control)
|
|
control.HTTPTestServer.Start()
|
|
t.Cleanup(control.HTTPTestServer.Close)
|
|
controlURL = control.HTTPTestServer.URL
|
|
t.Logf("testcontrol listening on %s", controlURL)
|
|
return controlURL
|
|
}
|
|
|
|
type testCertIssuer struct {
|
|
mu sync.Mutex
|
|
certs map[string]*tls.Certificate
|
|
|
|
root *x509.Certificate
|
|
rootKey *ecdsa.PrivateKey
|
|
}
|
|
|
|
func newCertIssuer() *testCertIssuer {
|
|
rootKey, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
t := &x509.Certificate{
|
|
SerialNumber: big.NewInt(1),
|
|
Subject: pkix.Name{
|
|
CommonName: "root",
|
|
},
|
|
NotBefore: time.Now(),
|
|
NotAfter: time.Now().Add(time.Hour),
|
|
IsCA: true,
|
|
ExtKeyUsage: []x509.ExtKeyUsage{x509.ExtKeyUsageServerAuth},
|
|
KeyUsage: x509.KeyUsageCertSign,
|
|
BasicConstraintsValid: true,
|
|
}
|
|
rootDER, err := x509.CreateCertificate(rand.Reader, t, t, &rootKey.PublicKey, rootKey)
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
rootCA, err := x509.ParseCertificate(rootDER)
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
return &testCertIssuer{
|
|
certs: make(map[string]*tls.Certificate),
|
|
root: rootCA,
|
|
rootKey: rootKey,
|
|
}
|
|
}
|
|
|
|
func (tci *testCertIssuer) getCert(chi *tls.ClientHelloInfo) (*tls.Certificate, error) {
|
|
tci.mu.Lock()
|
|
defer tci.mu.Unlock()
|
|
cert, ok := tci.certs[chi.ServerName]
|
|
if ok {
|
|
return cert, nil
|
|
}
|
|
|
|
certPrivKey, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
certTmpl := &x509.Certificate{
|
|
SerialNumber: big.NewInt(1),
|
|
DNSNames: []string{chi.ServerName},
|
|
NotBefore: time.Now(),
|
|
NotAfter: time.Now().Add(time.Hour),
|
|
}
|
|
certDER, err := x509.CreateCertificate(rand.Reader, certTmpl, tci.root, &certPrivKey.PublicKey, tci.rootKey)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
cert = &tls.Certificate{
|
|
Certificate: [][]byte{certDER, tci.root.Raw},
|
|
PrivateKey: certPrivKey,
|
|
}
|
|
tci.certs[chi.ServerName] = cert
|
|
return cert, nil
|
|
}
|
|
|
|
func (tci *testCertIssuer) Pool() *x509.CertPool {
|
|
p := x509.NewCertPool()
|
|
p.AddCert(tci.root)
|
|
return p
|
|
}
|
|
|
|
var testCertRoot = newCertIssuer()
|
|
|
|
func startServer(t *testing.T, ctx context.Context, controlURL, hostname string) (*Server, netip.Addr) {
|
|
t.Helper()
|
|
|
|
tmp := filepath.Join(t.TempDir(), hostname)
|
|
os.MkdirAll(tmp, 0755)
|
|
s := &Server{
|
|
Dir: tmp,
|
|
ControlURL: controlURL,
|
|
Hostname: hostname,
|
|
Store: new(mem.Store),
|
|
Ephemeral: true,
|
|
getCertForTesting: testCertRoot.getCert,
|
|
}
|
|
if !*verboseNodes {
|
|
s.Logf = logger.Discard
|
|
}
|
|
t.Cleanup(func() { s.Close() })
|
|
|
|
status, err := s.Up(ctx)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
return s, status.TailscaleIPs[0]
|
|
}
|
|
|
|
func TestConn(t *testing.T) {
|
|
tstest.ResourceCheck(t)
|
|
ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
|
|
defer cancel()
|
|
|
|
controlURL := startControl(t)
|
|
s1, s1ip := startServer(t, ctx, controlURL, "s1")
|
|
s2, _ := startServer(t, ctx, controlURL, "s2")
|
|
|
|
lc2, err := s2.LocalClient()
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
// ping to make sure the connection is up.
|
|
res, err := lc2.Ping(ctx, s1ip, tailcfg.PingICMP)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
t.Logf("ping success: %#+v", res)
|
|
|
|
// pass some data through TCP.
|
|
ln, err := s1.Listen("tcp", ":8081")
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
defer ln.Close()
|
|
|
|
w, err := s2.Dial(ctx, "tcp", fmt.Sprintf("%s:8081", s1ip))
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
r, err := ln.Accept()
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
want := "hello"
|
|
if _, err := io.WriteString(w, want); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
got := make([]byte, len(want))
|
|
if _, err := io.ReadAtLeast(r, got, len(got)); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
t.Logf("got: %q", got)
|
|
if string(got) != want {
|
|
t.Errorf("got %q, want %q", got, want)
|
|
}
|
|
|
|
_, err = s2.Dial(ctx, "tcp", fmt.Sprintf("%s:8082", s1ip)) // some random port
|
|
if err == nil {
|
|
t.Fatalf("unexpected success; should have seen a connection refused error")
|
|
}
|
|
}
|
|
|
|
func TestLoopbackLocalAPI(t *testing.T) {
|
|
tstest.ResourceCheck(t)
|
|
ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
|
|
defer cancel()
|
|
|
|
controlURL := startControl(t)
|
|
s1, _ := startServer(t, ctx, controlURL, "s1")
|
|
|
|
addr, proxyCred, localAPICred, err := s1.Loopback()
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if proxyCred == localAPICred {
|
|
t.Fatal("proxy password matches local API password, they should be different")
|
|
}
|
|
|
|
url := "http://" + addr + "/localapi/v0/status"
|
|
req, err := http.NewRequestWithContext(ctx, "GET", url, nil)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
res, err := http.DefaultClient.Do(req)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
res.Body.Close()
|
|
if res.StatusCode != 403 {
|
|
t.Errorf("GET %s returned %d, want 403 without Sec- header", url, res.StatusCode)
|
|
}
|
|
|
|
req, err = http.NewRequestWithContext(ctx, "GET", url, nil)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
req.Header.Set("Sec-Tailscale", "localapi")
|
|
res, err = http.DefaultClient.Do(req)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
res.Body.Close()
|
|
if res.StatusCode != 401 {
|
|
t.Errorf("GET %s returned %d, want 401 without basic auth", url, res.StatusCode)
|
|
}
|
|
|
|
req, err = http.NewRequestWithContext(ctx, "GET", url, nil)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
req.SetBasicAuth("", localAPICred)
|
|
res, err = http.DefaultClient.Do(req)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
res.Body.Close()
|
|
if res.StatusCode != 403 {
|
|
t.Errorf("GET %s returned %d, want 403 without Sec- header", url, res.StatusCode)
|
|
}
|
|
|
|
req, err = http.NewRequestWithContext(ctx, "GET", url, nil)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
req.Header.Set("Sec-Tailscale", "localapi")
|
|
req.SetBasicAuth("", localAPICred)
|
|
res, err = http.DefaultClient.Do(req)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
res.Body.Close()
|
|
if res.StatusCode != 200 {
|
|
t.Errorf("GET /status returned %d, want 200", res.StatusCode)
|
|
}
|
|
}
|
|
|
|
func TestLoopbackSOCKS5(t *testing.T) {
|
|
if runtime.GOOS == "windows" {
|
|
t.Skip("TODO(#7876): test regressed on windows while CI was broken")
|
|
}
|
|
|
|
ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
|
|
defer cancel()
|
|
|
|
controlURL := startControl(t)
|
|
s1, s1ip := startServer(t, ctx, controlURL, "s1")
|
|
s2, _ := startServer(t, ctx, controlURL, "s2")
|
|
|
|
addr, proxyCred, _, err := s2.Loopback()
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
ln, err := s1.Listen("tcp", ":8081")
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
defer ln.Close()
|
|
|
|
auth := &proxy.Auth{User: "tsnet", Password: proxyCred}
|
|
socksDialer, err := proxy.SOCKS5("tcp", addr, auth, proxy.Direct)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
w, err := socksDialer.Dial("tcp", fmt.Sprintf("%s:8081", s1ip))
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
r, err := ln.Accept()
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
want := "hello"
|
|
if _, err := io.WriteString(w, want); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
got := make([]byte, len(want))
|
|
if _, err := io.ReadAtLeast(r, got, len(got)); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
t.Logf("got: %q", got)
|
|
if string(got) != want {
|
|
t.Errorf("got %q, want %q", got, want)
|
|
}
|
|
}
|
|
|
|
func TestTailscaleIPs(t *testing.T) {
|
|
controlURL := startControl(t)
|
|
|
|
tmp := t.TempDir()
|
|
tmps1 := filepath.Join(tmp, "s1")
|
|
os.MkdirAll(tmps1, 0755)
|
|
s1 := &Server{
|
|
Dir: tmps1,
|
|
ControlURL: controlURL,
|
|
Hostname: "s1",
|
|
Store: new(mem.Store),
|
|
Ephemeral: true,
|
|
}
|
|
defer s1.Close()
|
|
|
|
ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
|
|
defer cancel()
|
|
|
|
s1status, err := s1.Up(ctx)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
var upIp4, upIp6 netip.Addr
|
|
for _, ip := range s1status.TailscaleIPs {
|
|
if ip.Is6() {
|
|
upIp6 = ip
|
|
}
|
|
if ip.Is4() {
|
|
upIp4 = ip
|
|
}
|
|
}
|
|
|
|
sIp4, sIp6 := s1.TailscaleIPs()
|
|
if !(upIp4 == sIp4 && upIp6 == sIp6) {
|
|
t.Errorf("s1.TailscaleIPs returned a different result than S1.Up, (%s, %s) != (%s, %s)",
|
|
sIp4, upIp4, sIp6, upIp6)
|
|
}
|
|
}
|
|
|
|
// TestListenerCleanup is a regression test to verify that s.Close doesn't
|
|
// deadlock if a listener is still open.
|
|
func TestListenerCleanup(t *testing.T) {
|
|
ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
|
|
defer cancel()
|
|
|
|
controlURL := startControl(t)
|
|
s1, _ := startServer(t, ctx, controlURL, "s1")
|
|
|
|
ln, err := s1.Listen("tcp", ":8081")
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
if err := s1.Close(); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
if err := ln.Close(); !errors.Is(err, net.ErrClosed) {
|
|
t.Fatalf("second ln.Close error: %v, want net.ErrClosed", err)
|
|
}
|
|
}
|
|
|
|
func TestFunnel(t *testing.T) {
|
|
ctx, dialCancel := context.WithTimeout(context.Background(), 30*time.Second)
|
|
defer dialCancel()
|
|
|
|
controlURL := startControl(t)
|
|
s1, _ := startServer(t, ctx, controlURL, "s1")
|
|
s2, _ := startServer(t, ctx, controlURL, "s2")
|
|
|
|
ln := must.Get(s1.ListenFunnel("tcp", ":443"))
|
|
defer ln.Close()
|
|
wantSrcAddrPort := netip.MustParseAddrPort("127.0.0.1:1234")
|
|
wantTarget := ipn.HostPort("s1.tail-scale.ts.net:443")
|
|
srv := &http.Server{
|
|
ConnContext: func(ctx context.Context, c net.Conn) context.Context {
|
|
tc, ok := c.(*tls.Conn)
|
|
if !ok {
|
|
t.Errorf("ConnContext called with non-TLS conn: %T", c)
|
|
}
|
|
if fc, ok := tc.NetConn().(*ipn.FunnelConn); !ok {
|
|
t.Errorf("ConnContext called with non-FunnelConn: %T", c)
|
|
} else if fc.Src != wantSrcAddrPort {
|
|
t.Errorf("ConnContext called with wrong SrcAddrPort; got %v, want %v", fc.Src, wantSrcAddrPort)
|
|
} else if fc.Target != wantTarget {
|
|
t.Errorf("ConnContext called with wrong Target; got %q, want %q", fc.Target, wantTarget)
|
|
}
|
|
return ctx
|
|
},
|
|
Handler: http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
|
|
fmt.Fprintf(w, "hello")
|
|
}),
|
|
}
|
|
go srv.Serve(ln)
|
|
|
|
c := &http.Client{
|
|
Transport: &http.Transport{
|
|
DialContext: func(ctx context.Context, network, addr string) (net.Conn, error) {
|
|
return dialIngressConn(s2, s1, addr)
|
|
},
|
|
TLSClientConfig: &tls.Config{
|
|
RootCAs: testCertRoot.Pool(),
|
|
},
|
|
},
|
|
}
|
|
resp, err := c.Get("https://s1.tail-scale.ts.net:443")
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
defer resp.Body.Close()
|
|
if resp.StatusCode != 200 {
|
|
t.Errorf("unexpected status code: %v", resp.StatusCode)
|
|
return
|
|
}
|
|
body, err := ioutil.ReadAll(resp.Body)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if string(body) != "hello" {
|
|
t.Errorf("unexpected body: %q", body)
|
|
}
|
|
}
|
|
|
|
func dialIngressConn(from, to *Server, target string) (net.Conn, error) {
|
|
toLC := must.Get(to.LocalClient())
|
|
toStatus := must.Get(toLC.StatusWithoutPeers(context.Background()))
|
|
peer6 := toStatus.Self.PeerAPIURL[1] // IPv6
|
|
toPeerAPI, ok := strings.CutPrefix(peer6, "http://")
|
|
if !ok {
|
|
return nil, fmt.Errorf("unexpected PeerAPIURL %q", peer6)
|
|
}
|
|
|
|
dialCtx, dialCancel := context.WithTimeout(context.Background(), 30*time.Second)
|
|
outConn, err := from.Dial(dialCtx, "tcp", toPeerAPI)
|
|
dialCancel()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
req, err := http.NewRequest("POST", "/v0/ingress", nil)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
req.Host = toPeerAPI
|
|
req.Header.Set("Tailscale-Ingress-Src", "127.0.0.1:1234")
|
|
req.Header.Set("Tailscale-Ingress-Target", target)
|
|
if err := req.Write(outConn); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
br := bufio.NewReader(outConn)
|
|
res, err := http.ReadResponse(br, req)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
defer res.Body.Close() // just to appease vet
|
|
if res.StatusCode != 101 {
|
|
return nil, fmt.Errorf("unexpected status code: %v", res.StatusCode)
|
|
}
|
|
return &bufferedConn{outConn, br}, nil
|
|
}
|
|
|
|
type bufferedConn struct {
|
|
net.Conn
|
|
reader *bufio.Reader
|
|
}
|
|
|
|
func (c *bufferedConn) Read(b []byte) (int, error) {
|
|
return c.reader.Read(b)
|
|
}
|