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tailscale/control/controlclient/direct_test.go

306 lines
7.5 KiB
Go

// Copyright (c) 2020 Tailscale Inc & AUTHORS All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build depends_on_currently_unreleased
package controlclient
import (
"context"
"io/ioutil"
"net/http"
"net/http/httptest"
"os"
"testing"
"time"
"github.com/klauspost/compress/zstd"
"github.com/tailscale/wireguard-go/wgcfg"
"tailscale.com/tailcfg"
"tailscale.io/control" // not yet released
)
func TestClientsReusingKeys(t *testing.T) {
tmpdir, err := ioutil.TempDir("", "control-test-")
if err != nil {
t.Fatal(err)
}
var server *control.Server
httpsrv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
server.ServeHTTP(w, r)
}))
server, err = control.New(tmpdir, httpsrv.URL, true)
if err != nil {
t.Fatal(err)
}
server.QuietLogging = true
defer func() {
httpsrv.CloseClientConnections()
httpsrv.Close()
os.RemoveAll(tmpdir)
}()
hi := NewHostinfo()
hi.FrontendLogID = "go-test-only"
hi.BackendLogID = "go-test-only"
c1, err := NewDirect(Options{
ServerURL: httpsrv.URL,
HTTPC: httpsrv.Client(),
//TimeNow: s.control.TimeNow,
Logf: func(fmt string, args ...interface{}) {
t.Helper()
t.Logf("c1: "+fmt, args...)
},
Hostinfo: &hi,
})
if err != nil {
t.Fatal(err)
}
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
authURL, err := c1.TryLogin(ctx, nil, 0)
if err != nil {
t.Fatal(err)
}
const user = "testuser1@tailscale.onmicrosoft.com"
postAuthURL(t, ctx, httpsrv.Client(), user, authURL)
newURL, err := c1.WaitLoginURL(ctx, authURL)
if err != nil {
t.Fatal(err)
}
if newURL != "" {
t.Fatalf("unexpected newURL: %s", newURL)
}
pollErrCh := make(chan error)
go func() {
err := c1.PollNetMap(ctx, -1, func(netMap *NetworkMap) {})
pollErrCh <- err
}()
select {
case err := <-pollErrCh:
t.Fatal(err)
default:
}
c2, err := NewDirect(Options{
ServerURL: httpsrv.URL,
HTTPC: httpsrv.Client(),
Logf: func(fmt string, args ...interface{}) {
t.Helper()
t.Logf("c2: "+fmt, args...)
},
Persist: c1.GetPersist(),
Hostinfo: &hi,
NewDecompressor: func() (Decompressor, error) {
return zstd.NewReader(nil)
},
KeepAlive: true,
})
if err != nil {
t.Fatal(err)
}
authURL, err = c2.TryLogin(ctx, nil, 0)
if err != nil {
t.Fatal(err)
}
if authURL != "" {
t.Errorf("unexpected authURL %s", authURL)
}
err = c2.PollNetMap(ctx, 1, func(netMap *NetworkMap) {})
if err != nil {
t.Fatal(err)
}
select {
case err := <-pollErrCh:
t.Logf("expected poll error: %v", err)
case <-time.After(5 * time.Second):
t.Fatal("first client poll failed to close")
}
}
func TestClientsReusingOldKey(t *testing.T) {
tmpdir, err := ioutil.TempDir("", "control-test-")
if err != nil {
t.Fatal(err)
}
var server *control.Server
httpsrv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
server.ServeHTTP(w, r)
}))
server, err = control.New(tmpdir, httpsrv.URL, true)
if err != nil {
t.Fatal(err)
}
server.QuietLogging = true
defer func() {
httpsrv.CloseClientConnections()
httpsrv.Close()
os.RemoveAll(tmpdir)
}()
hi := NewHostinfo()
hi.FrontendLogID = "go-test-only"
hi.BackendLogID = "go-test-only"
genOpts := func() Options {
return Options{
ServerURL: httpsrv.URL,
HTTPC: httpsrv.Client(),
//TimeNow: s.control.TimeNow,
Logf: func(fmt string, args ...interface{}) {
t.Helper()
t.Logf("c1: "+fmt, args...)
},
Hostinfo: &hi,
}
}
// Login with a new node key. This requires authorization.
c1, err := NewDirect(genOpts())
if err != nil {
t.Fatal(err)
}
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
authURL, err := c1.TryLogin(ctx, nil, 0)
if err != nil {
t.Fatal(err)
}
const user = "testuser1@tailscale.onmicrosoft.com"
postAuthURL(t, ctx, httpsrv.Client(), user, authURL)
newURL, err := c1.WaitLoginURL(ctx, authURL)
if err != nil {
t.Fatal(err)
}
if newURL != "" {
t.Fatalf("unexpected newURL: %s", newURL)
}
if err := c1.PollNetMap(ctx, 1, func(netMap *NetworkMap) {}); err != nil {
t.Fatal(err)
}
newPrivKey := func(t *testing.T) wgcfg.PrivateKey {
t.Helper()
k, err := wgcfg.NewPrivateKey()
if err != nil {
t.Fatal(err)
}
return k
}
// Replace the previous key with a new key.
persist1 := c1.GetPersist()
persist2 := Persist{
PrivateMachineKey: persist1.PrivateMachineKey,
OldPrivateNodeKey: persist1.PrivateNodeKey,
PrivateNodeKey: newPrivKey(t),
}
opts := genOpts()
opts.Persist = persist2
c1, err = NewDirect(opts)
if err != nil {
t.Fatal(err)
}
if authURL, err := c1.TryLogin(ctx, nil, 0); err != nil {
t.Fatal(err)
} else if authURL == "" {
t.Fatal("expected authURL for reused oldNodeKey, got none")
} else {
postAuthURL(t, ctx, httpsrv.Client(), user, authURL)
if newURL, err := c1.WaitLoginURL(ctx, authURL); err != nil {
t.Fatal(err)
} else if newURL != "" {
t.Fatalf("unexpected newURL: %s", newURL)
}
}
if p := c1.GetPersist(); p.PrivateNodeKey != opts.Persist.PrivateNodeKey {
t.Error("unexpected node key change")
} else {
persist2 = p
}
// Here we simulate a client using using old persistent data.
// We use the key we have already replaced as the old node key.
// This requires the user to authenticate.
persist3 := Persist{
PrivateMachineKey: persist1.PrivateMachineKey,
OldPrivateNodeKey: persist1.PrivateNodeKey,
PrivateNodeKey: newPrivKey(t),
}
opts = genOpts()
opts.Persist = persist3
c1, err = NewDirect(opts)
if err != nil {
t.Fatal(err)
}
if authURL, err := c1.TryLogin(ctx, nil, 0); err != nil {
t.Fatal(err)
} else if authURL == "" {
t.Fatal("expected authURL for reused oldNodeKey, got none")
} else {
postAuthURL(t, ctx, httpsrv.Client(), user, authURL)
if newURL, err := c1.WaitLoginURL(ctx, authURL); err != nil {
t.Fatal(err)
} else if newURL != "" {
t.Fatalf("unexpected newURL: %s", newURL)
}
}
if err := c1.PollNetMap(ctx, 1, func(netMap *NetworkMap) {}); err != nil {
t.Fatal(err)
}
// At this point, there should only be one node for the machine key
// registered as active in the server.
mkey := tailcfg.MachineKey(persist1.PrivateMachineKey.Public())
nodeIDs, err := server.DB().MachineNodes(mkey)
if err != nil {
t.Fatal(err)
}
if len(nodeIDs) != 1 {
t.Logf("active nodes for machine key %v:", mkey)
for i, nodeID := range nodeIDs {
nodeKey := server.DB().NodeKey(nodeID)
t.Logf("\tnode %d: id=%v, key=%v", i, nodeID, nodeKey)
}
t.Fatalf("want 1 active node for the client machine, got %d", len(nodeIDs))
}
// Now try the previous node key. It should fail.
opts = genOpts()
opts.Persist = persist2
c1, err = NewDirect(opts)
if err != nil {
t.Fatal(err)
}
// TODO(crawshaw): make this return an actual error.
// Have cfgdb track expired keys, and when an expired key is reused
// produce an error.
if authURL, err := c1.TryLogin(ctx, nil, 0); err != nil {
t.Fatal(err)
} else if authURL == "" {
t.Fatal("expected authURL for reused nodeKey, got none")
} else {
postAuthURL(t, ctx, httpsrv.Client(), user, authURL)
if newURL, err := c1.WaitLoginURL(ctx, authURL); err != nil {
t.Fatal(err)
} else if newURL != "" {
t.Fatalf("unexpected newURL: %s", newURL)
}
}
if err := c1.PollNetMap(ctx, 1, func(netMap *NetworkMap) {}); err != nil {
t.Fatal(err)
}
if nodeIDs, err := server.DB().MachineNodes(mkey); err != nil {
t.Fatal(err)
} else if len(nodeIDs) != 1 {
t.Fatalf("want 1 active node for the client machine, got %d", len(nodeIDs))
}
}