package orchestration import ( "context" "fmt" "io" "io/ioutil" "net" "net/http" "net/http/httptest" "sync" "testing" "time" "github.com/gobwas/ws/wsutil" gows "github.com/gorilla/websocket" "github.com/rs/zerolog" "github.com/stretchr/testify/require" "github.com/cloudflare/cloudflared/connection" "github.com/cloudflare/cloudflared/ingress" "github.com/cloudflare/cloudflared/proxy" tunnelpogs "github.com/cloudflare/cloudflared/tunnelrpc/pogs" ) var ( testLogger = zerolog.Logger{} testTags = []tunnelpogs.Tag{ { Name: "package", Value: "orchestration", }, { Name: "purpose", Value: "test", }, } ) // TestUpdateConfiguration tests that // - configurations can be deserialized // - proxy can be updated // - last applied version and error are returned // - configurations can be deserialized // - receiving an old version is noop func TestUpdateConfiguration(t *testing.T) { initConfig := &Config{ Ingress: &ingress.Ingress{}, WarpRoutingEnabled: false, } orchestrator, err := NewOrchestrator(context.Background(), initConfig, testTags, &testLogger) require.NoError(t, err) initOriginProxy, err := orchestrator.GetOriginProxy() require.NoError(t, err) require.IsType(t, &proxy.Proxy{}, initOriginProxy) configJSONV2 := []byte(` { "unknown_field": "not_deserialized", "originRequest": { "connectTimeout": 90, "noHappyEyeballs": true }, "ingress": [ { "hostname": "jira.tunnel.org", "path": "^\/login", "service": "http://192.16.19.1:443", "originRequest": { "noTLSVerify": true, "connectTimeout": 10 } }, { "hostname": "jira.tunnel.org", "service": "http://172.32.20.6:80", "originRequest": { "noTLSVerify": true, "connectTimeout": 30 } }, { "service": "http_status:404" } ], "warp-routing": { "enabled": true } } `) updateWithValidation(t, orchestrator, 2, configJSONV2) configV2 := orchestrator.config // Validate ingress rule 0 require.Equal(t, "jira.tunnel.org", configV2.Ingress.Rules[0].Hostname) require.True(t, configV2.Ingress.Rules[0].Matches("jira.tunnel.org", "/login")) require.True(t, configV2.Ingress.Rules[0].Matches("jira.tunnel.org", "/login/2fa")) require.False(t, configV2.Ingress.Rules[0].Matches("jira.tunnel.org", "/users")) require.Equal(t, "http://192.16.19.1:443", configV2.Ingress.Rules[0].Service.String()) require.Len(t, configV2.Ingress.Rules, 3) // originRequest of this ingress rule overrides global default require.Equal(t, time.Second*10, configV2.Ingress.Rules[0].Config.ConnectTimeout) require.Equal(t, true, configV2.Ingress.Rules[0].Config.NoTLSVerify) // Inherited from global default require.Equal(t, true, configV2.Ingress.Rules[0].Config.NoHappyEyeballs) // Validate ingress rule 1 require.Equal(t, "jira.tunnel.org", configV2.Ingress.Rules[1].Hostname) require.True(t, configV2.Ingress.Rules[1].Matches("jira.tunnel.org", "/users")) require.Equal(t, "http://172.32.20.6:80", configV2.Ingress.Rules[1].Service.String()) // originRequest of this ingress rule overrides global default require.Equal(t, time.Second*30, configV2.Ingress.Rules[1].Config.ConnectTimeout) require.Equal(t, true, configV2.Ingress.Rules[1].Config.NoTLSVerify) // Inherited from global default require.Equal(t, true, configV2.Ingress.Rules[1].Config.NoHappyEyeballs) // Validate ingress rule 2, it's the catch-all rule require.True(t, configV2.Ingress.Rules[2].Matches("blogs.tunnel.io", "/2022/02/10")) // Inherited from global default require.Equal(t, time.Second*90, configV2.Ingress.Rules[2].Config.ConnectTimeout) require.Equal(t, false, configV2.Ingress.Rules[2].Config.NoTLSVerify) require.Equal(t, true, configV2.Ingress.Rules[2].Config.NoHappyEyeballs) require.True(t, configV2.WarpRoutingEnabled) originProxyV2, err := orchestrator.GetOriginProxy() require.NoError(t, err) require.IsType(t, &proxy.Proxy{}, originProxyV2) require.NotEqual(t, originProxyV2, initOriginProxy) // Should not downgrade to an older version resp := orchestrator.UpdateConfig(1, nil) require.NoError(t, resp.Err) require.Equal(t, int32(2), resp.LastAppliedVersion) invalidJSON := []byte(` { "originRequest": } `) resp = orchestrator.UpdateConfig(3, invalidJSON) require.Error(t, resp.Err) require.Equal(t, int32(2), resp.LastAppliedVersion) originProxyV3, err := orchestrator.GetOriginProxy() require.NoError(t, err) require.Equal(t, originProxyV2, originProxyV3) configJSONV10 := []byte(` { "ingress": [ { "service": "hello-world" } ], "warp-routing": { "enabled": false } } `) updateWithValidation(t, orchestrator, 10, configJSONV10) configV10 := orchestrator.config require.Len(t, configV10.Ingress.Rules, 1) require.True(t, configV10.Ingress.Rules[0].Matches("blogs.tunnel.io", "/2022/02/10")) require.Equal(t, ingress.HelloWorldService, configV10.Ingress.Rules[0].Service.String()) require.False(t, configV10.WarpRoutingEnabled) originProxyV10, err := orchestrator.GetOriginProxy() require.NoError(t, err) require.IsType(t, &proxy.Proxy{}, originProxyV10) require.NotEqual(t, originProxyV10, originProxyV2) } // TestConcurrentUpdateAndRead makes sure orchestrator can receive updates and return origin proxy concurrently func TestConcurrentUpdateAndRead(t *testing.T) { const ( concurrentRequests = 200 hostname = "public.tunnels.org" expectedHost = "internal.tunnels.svc.cluster.local" tcpBody = "testProxyTCP" ) httpOrigin := httptest.NewServer(&validateHostHandler{ expectedHost: expectedHost, body: t.Name(), }) defer httpOrigin.Close() tcpOrigin, err := net.Listen("tcp", "127.0.0.1:0") require.NoError(t, err) defer tcpOrigin.Close() var ( configJSONV1 = []byte(fmt.Sprintf(` { "originRequest": { "connectTimeout": 90, "noHappyEyeballs": true }, "ingress": [ { "hostname": "%s", "service": "%s", "originRequest": { "httpHostHeader": "%s", "connectTimeout": 10 } }, { "service": "http_status:404" } ], "warp-routing": { "enabled": true } } `, hostname, httpOrigin.URL, expectedHost)) configJSONV2 = []byte(` { "ingress": [ { "service": "http_status:204" } ], "warp-routing": { "enabled": false } } `) configJSONV3 = []byte(` { "ingress": [ { "service": "http_status:418" } ], "warp-routing": { "enabled": true } } `) // appliedV2 makes sure v3 is applied after v2 appliedV2 = make(chan struct{}) initConfig = &Config{ Ingress: &ingress.Ingress{}, WarpRoutingEnabled: false, } ) orchestrator, err := NewOrchestrator(context.Background(), initConfig, testTags, &testLogger) require.NoError(t, err) updateWithValidation(t, orchestrator, 1, configJSONV1) var wg sync.WaitGroup // tcpOrigin will be closed when the test exits. Only the handler routines are included in the wait group go func() { serveTCPOrigin(t, tcpOrigin, &wg) }() for i := 0; i < concurrentRequests; i++ { originProxy, err := orchestrator.GetOriginProxy() require.NoError(t, err) wg.Add(1) go func(i int, originProxy connection.OriginProxy) { defer wg.Done() resp, err := proxyHTTP(t, originProxy, hostname) require.NoError(t, err) var warpRoutingDisabled bool // The response can be from initOrigin, http_status:204 or http_status:418 switch resp.StatusCode { // v1 proxy, warp enabled case 200: body, err := ioutil.ReadAll(resp.Body) require.NoError(t, err) require.Equal(t, t.Name(), string(body)) warpRoutingDisabled = false // v2 proxy, warp disabled case 204: require.Greater(t, i, concurrentRequests/4) warpRoutingDisabled = true // v3 proxy, warp enabled case 418: require.Greater(t, i, concurrentRequests/2) warpRoutingDisabled = false } // Once we have originProxy, it won't be changed by configuration updates. // We can infer the version by the ProxyHTTP response code pr, pw := io.Pipe() // concurrentRespWriter makes sure ResponseRecorder is not read/write concurrently, and read waits for the first write w := newRespReadWriteFlusher() // Write TCP message and make sure it's echo back. This has to be done in a go routune since ProxyTCP doesn't // return until the stream is closed. if !warpRoutingDisabled { wg.Add(1) go func() { defer wg.Done() defer pw.Close() tcpEyeball(t, pw, tcpBody, w) }() } proxyTCP(t, originProxy, tcpOrigin.Addr().String(), w, pr, warpRoutingDisabled) }(i, originProxy) if i == concurrentRequests/4 { wg.Add(1) go func() { defer wg.Done() updateWithValidation(t, orchestrator, 2, configJSONV2) close(appliedV2) }() } if i == concurrentRequests/2 { wg.Add(1) go func() { defer wg.Done() <-appliedV2 updateWithValidation(t, orchestrator, 3, configJSONV3) }() } } wg.Wait() } func proxyHTTP(t *testing.T, originProxy connection.OriginProxy, hostname string) (*http.Response, error) { req, err := http.NewRequest(http.MethodGet, fmt.Sprintf("http://%s", hostname), nil) require.NoError(t, err) w := httptest.NewRecorder() log := zerolog.Nop() respWriter, err := connection.NewHTTP2RespWriter(req, w, connection.TypeHTTP, &log) require.NoError(t, err) err = originProxy.ProxyHTTP(respWriter, req, false) if err != nil { return nil, err } return w.Result(), nil } func tcpEyeball(t *testing.T, reqWriter io.WriteCloser, body string, respReadWriter *respReadWriteFlusher) { writeN, err := reqWriter.Write([]byte(body)) require.NoError(t, err) readBuffer := make([]byte, writeN) n, err := respReadWriter.Read(readBuffer) require.NoError(t, err) require.Equal(t, body, string(readBuffer[:n])) require.Equal(t, writeN, n) } func proxyTCP(t *testing.T, originProxy connection.OriginProxy, originAddr string, w http.ResponseWriter, reqBody io.ReadCloser, expectErr bool) { req, err := http.NewRequest(http.MethodGet, fmt.Sprintf("http://%s", originAddr), reqBody) require.NoError(t, err) log := zerolog.Nop() respWriter, err := connection.NewHTTP2RespWriter(req, w, connection.TypeTCP, &log) require.NoError(t, err) tcpReq := &connection.TCPRequest{ Dest: originAddr, CFRay: "123", LBProbe: false, } rws := connection.NewHTTPResponseReadWriterAcker(respWriter, req) if expectErr { require.Error(t, originProxy.ProxyTCP(context.Background(), rws, tcpReq)) return } require.NoError(t, originProxy.ProxyTCP(context.Background(), rws, tcpReq)) } func serveTCPOrigin(t *testing.T, tcpOrigin net.Listener, wg *sync.WaitGroup) { for { conn, err := tcpOrigin.Accept() if err != nil { return } wg.Add(1) go func() { defer wg.Done() defer conn.Close() echoTCP(t, conn) }() } } func echoTCP(t *testing.T, conn net.Conn) { readBuf := make([]byte, 1000) readN, err := conn.Read(readBuf) require.NoError(t, err) writeN, err := conn.Write(readBuf[:readN]) require.NoError(t, err) require.Equal(t, readN, writeN) } type validateHostHandler struct { expectedHost string body string } func (vhh *validateHostHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) { if r.Host != vhh.expectedHost { w.WriteHeader(http.StatusBadRequest) return } w.WriteHeader(http.StatusOK) w.Write([]byte(vhh.body)) } func updateWithValidation(t *testing.T, orchestrator *Orchestrator, version int32, config []byte) { resp := orchestrator.UpdateConfig(version, config) require.NoError(t, resp.Err) require.Equal(t, version, resp.LastAppliedVersion) } // TestClosePreviousProxies makes sure proxies started in the pervious configuration version are shutdown func TestClosePreviousProxies(t *testing.T) { var ( hostname = "hello.tunnel1.org" configWithHelloWorld = []byte(fmt.Sprintf(` { "ingress": [ { "hostname": "%s", "service": "hello-world" }, { "service": "http_status:404" } ], "warp-routing": { "enabled": true } } `, hostname)) configTeapot = []byte(` { "ingress": [ { "service": "http_status:418" } ], "warp-routing": { "enabled": true } } `) initConfig = &Config{ Ingress: &ingress.Ingress{}, WarpRoutingEnabled: false, } ) ctx, cancel := context.WithCancel(context.Background()) orchestrator, err := NewOrchestrator(ctx, initConfig, testTags, &testLogger) require.NoError(t, err) updateWithValidation(t, orchestrator, 1, configWithHelloWorld) originProxyV1, err := orchestrator.GetOriginProxy() require.NoError(t, err) resp, err := proxyHTTP(t, originProxyV1, hostname) require.NoError(t, err) require.Equal(t, http.StatusOK, resp.StatusCode) updateWithValidation(t, orchestrator, 2, configTeapot) originProxyV2, err := orchestrator.GetOriginProxy() require.NoError(t, err) resp, err = proxyHTTP(t, originProxyV2, hostname) require.NoError(t, err) require.Equal(t, http.StatusTeapot, resp.StatusCode) // The hello-world server in config v1 should have been stopped resp, err = proxyHTTP(t, originProxyV1, hostname) require.Error(t, err) require.Nil(t, resp) // Apply the config with hello world server again, orchestrator should spin up another hello world server updateWithValidation(t, orchestrator, 3, configWithHelloWorld) originProxyV3, err := orchestrator.GetOriginProxy() require.NoError(t, err) require.NotEqual(t, originProxyV1, originProxyV3) resp, err = proxyHTTP(t, originProxyV3, hostname) require.NoError(t, err) require.Equal(t, http.StatusOK, resp.StatusCode) // cancel the context should terminate the last proxy cancel() // Wait for proxies to shutdown time.Sleep(time.Millisecond * 10) resp, err = proxyHTTP(t, originProxyV3, hostname) require.Error(t, err) require.Nil(t, resp) } // TestPersistentConnection makes sure updating the ingress doesn't intefere with existing connections func TestPersistentConnection(t *testing.T) { const ( hostname = "http://ws.tunnel.org" ) msg := t.Name() initConfig := &Config{ Ingress: &ingress.Ingress{}, WarpRoutingEnabled: false, } orchestrator, err := NewOrchestrator(context.Background(), initConfig, testTags, &testLogger) require.NoError(t, err) wsOrigin := httptest.NewServer(http.HandlerFunc(wsEcho)) defer wsOrigin.Close() tcpOrigin, err := net.Listen("tcp", "127.0.0.1:0") require.NoError(t, err) defer tcpOrigin.Close() configWithWSAndWarp := []byte(fmt.Sprintf(` { "ingress": [ { "service": "%s" } ], "warp-routing": { "enabled": true } } `, wsOrigin.URL)) updateWithValidation(t, orchestrator, 1, configWithWSAndWarp) originProxy, err := orchestrator.GetOriginProxy() require.NoError(t, err) wsReqReader, wsReqWriter := io.Pipe() wsRespReadWriter := newRespReadWriteFlusher() tcpReqReader, tcpReqWriter := io.Pipe() tcpRespReadWriter := newRespReadWriteFlusher() var wg sync.WaitGroup wg.Add(3) // Start TCP origin go func() { defer wg.Done() conn, err := tcpOrigin.Accept() require.NoError(t, err) defer conn.Close() // Expect 3 TCP messages for i := 0; i < 3; i++ { echoTCP(t, conn) } }() // Simulate cloudflared recieving a TCP connection go func() { defer wg.Done() proxyTCP(t, originProxy, tcpOrigin.Addr().String(), tcpRespReadWriter, tcpReqReader, false) }() // Simulate cloudflared recieving a WS connection go func() { defer wg.Done() req, err := http.NewRequest(http.MethodGet, hostname, wsReqReader) require.NoError(t, err) // ProxyHTTP will add Connection, Upgrade and Sec-Websocket-Version headers req.Header.Add("Sec-WebSocket-Key", "dGhlIHNhbXBsZSBub25jZQ==") log := zerolog.Nop() respWriter, err := connection.NewHTTP2RespWriter(req, wsRespReadWriter, connection.TypeWebsocket, &log) require.NoError(t, err) err = originProxy.ProxyHTTP(respWriter, req, true) require.NoError(t, err) }() // Simulate eyeball WS and TCP connections validateWsEcho(t, msg, wsReqWriter, wsRespReadWriter) tcpEyeball(t, tcpReqWriter, msg, tcpRespReadWriter) configNoWSAndWarp := []byte(` { "ingress": [ { "service": "http_status:404" } ], "warp-routing": { "enabled": false } } `) updateWithValidation(t, orchestrator, 2, configNoWSAndWarp) // Make sure connection is still up validateWsEcho(t, msg, wsReqWriter, wsRespReadWriter) tcpEyeball(t, tcpReqWriter, msg, tcpRespReadWriter) updateWithValidation(t, orchestrator, 3, configWithWSAndWarp) // Make sure connection is still up validateWsEcho(t, msg, wsReqWriter, wsRespReadWriter) tcpEyeball(t, tcpReqWriter, msg, tcpRespReadWriter) wsReqWriter.Close() tcpReqWriter.Close() wg.Wait() } func wsEcho(w http.ResponseWriter, r *http.Request) { upgrader := gows.Upgrader{} conn, err := upgrader.Upgrade(w, r, nil) if err != nil { return } defer conn.Close() for { mt, message, err := conn.ReadMessage() if err != nil { fmt.Println("read message err", err) break } err = conn.WriteMessage(mt, message) if err != nil { fmt.Println("write message err", err) break } } } func validateWsEcho(t *testing.T, msg string, reqWriter io.Writer, respReadWriter io.ReadWriter) { err := wsutil.WriteClientText(reqWriter, []byte(msg)) require.NoError(t, err) receivedMsg, err := wsutil.ReadServerText(respReadWriter) require.NoError(t, err) require.Equal(t, msg, string(receivedMsg)) } type respReadWriteFlusher struct { io.Reader w io.Writer headers http.Header statusCode int setStatusOnce sync.Once hasStatus chan struct{} } func newRespReadWriteFlusher() *respReadWriteFlusher { pr, pw := io.Pipe() return &respReadWriteFlusher{ Reader: pr, w: pw, headers: make(http.Header), hasStatus: make(chan struct{}), } } func (rrw *respReadWriteFlusher) Write(buf []byte) (int, error) { rrw.WriteHeader(http.StatusOK) return rrw.w.Write(buf) } func (rrw *respReadWriteFlusher) Flush() {} func (rrw *respReadWriteFlusher) Header() http.Header { return rrw.headers } func (rrw *respReadWriteFlusher) WriteHeader(statusCode int) { rrw.setStatusOnce.Do(func() { rrw.statusCode = statusCode close(rrw.hasStatus) }) }