http_api (ticdc): check --cert-allowed-cn before add server common na…

…me (#3628)

cdc/capture/capture.go

@@ -88,6 +88,12 @@ func NewCapture(pdClient pd.Client, kvStorage tidbkv.Storage, etcdClient *etcd.C
 	}
 }
 
+func NewCapture4Test() *Capture {
+	return &Capture{
+		info: &model.CaptureInfo{ID: "capture-for-test", AdvertiseAddr: "127.0.0.1", Version: "test"},
+	}
+}
+
 func (c *Capture) reset(ctx context.Context) error {
 	c.captureMu.Lock()
 	defer c.captureMu.Unlock()

cdc/capture/http_handler.go

@@ -672,11 +672,6 @@ func (h *HTTPHandler) ListCapture(c *gin.Context) {
 // @Failure 500,400 {object} model.HTTPError
 // @Router	/api/v1/status [get]
 func (h *HTTPHandler) ServerStatus(c *gin.Context) {
-	if !h.capture.IsOwner() {
-		h.forwardToOwner(c)
-		return
-	}
-
 	status := model.ServerStatus{
 		Version: version.ReleaseVersion,
 		GitHash: version.GitHash,
@@ -697,11 +692,6 @@ func (h *HTTPHandler) ServerStatus(c *gin.Context) {
 // @Failure 500 {object} model.HTTPError
 // @Router	/api/v1/health [get]
 func (h *HTTPHandler) Health(c *gin.Context) {
-	if !h.capture.IsOwner() {
-		h.forwardToOwner(c)
-		return
-	}
-
 	ctx := c.Request.Context()
 
 	if _, err := h.capture.GetOwner(ctx); err != nil {

cdc/http_status.go

@@ -59,11 +59,17 @@ func (s *Server) startStatusHTTP() error {
 	prometheus.DefaultGatherer = registry
 	router.Any("/metrics", gin.WrapH(promhttp.Handler()))
 
-	err := conf.Security.AddSelfCommonName()
-	if err != nil {
-		log.Error("status server set tls config failed", zap.Error(err))
-		return errors.Trace(err)
+	// if CertAllowedCN was specified, we should add server's common name
+	// otherwise, https requests sent to non-owner capture can't be forward
+	// to owner
+	if len(conf.Security.CertAllowedCN) != 0 {
+		err := conf.Security.AddSelfCommonName()
+		if err != nil {
+			log.Error("status server set tls config failed", zap.Error(err))
+			return errors.Trace(err)
+		}
 	}
+
 	tlsConfig, err := conf.Security.ToTLSConfigWithVerify()
 	if err != nil {
 		log.Error("status server get tls config failed", zap.Error(err))

cdc/http_status_test.go

@@ -15,16 +15,27 @@ package cdc
 
 import (
 	"bytes"
+	"context"
+	"crypto/tls"
+	"encoding/json"
 	"fmt"
 	"io"
 	"net/http"
 	"net/url"
+	"strings"
 	"time"
 
 	"github.com/pingcap/check"
 	"github.com/pingcap/failpoint"
+	"github.com/pingcap/ticdc/cdc/capture"
+	"github.com/pingcap/ticdc/cdc/model"
 	"github.com/pingcap/ticdc/pkg/config"
+	cerrors "github.com/pingcap/ticdc/pkg/errors"
+	"github.com/pingcap/ticdc/pkg/retry"
+	security2 "github.com/pingcap/ticdc/pkg/security"
 	"github.com/pingcap/ticdc/pkg/util/testleak"
+	"github.com/pingcap/tidb/br/pkg/httputil"
+	"github.com/tikv/pd/pkg/tempurl"
 	"go.etcd.io/etcd/clientv3/concurrency"
 )
 
@@ -159,3 +170,138 @@ func testHandleFailpoint(c *check.C) {
 	})
 	c.Assert(failpointHit, check.IsFalse)
 }
+
+func (s *httpStatusSuite) TestServerTLSWithoutCommonName(c *check.C) {
+	defer testleak.AfterTest(c)
+	addr := tempurl.Alloc()[len("http://"):]
+	// Do not specify common name
+	security, err := security2.NewCredential4Test("")
+	c.Assert(err, check.IsNil)
+	conf := config.GetDefaultServerConfig()
+	conf.Addr = addr
+	conf.AdvertiseAddr = addr
+	conf.Security = &security
+	config.StoreGlobalServerConfig(conf)
+
+	server, err := NewServer([]string{"https://127.0.0.1:2379"})
+	server.capture = capture.NewCapture4Test()
+	c.Assert(err, check.IsNil)
+	err = server.startStatusHTTP()
+	c.Assert(err, check.IsNil)
+	defer func() {
+		c.Assert(server.statusServer.Close(), check.IsNil)
+	}()
+
+	statusURL := fmt.Sprintf("https://%s/api/v1/status", addr)
+	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+	defer cancel()
+
+	// test cli sends request without a cert will success
+	err = retry.Do(ctx, func() error {
+		tr := &http.Transport{
+			TLSClientConfig: &tls.Config{InsecureSkipVerify: true},
+		}
+		cli := &http.Client{Transport: tr}
+		resp, err := cli.Get(statusURL)
+		if err != nil {
+			return err
+		}
+		decoder := json.NewDecoder(resp.Body)
+		captureInfo := &model.CaptureInfo{}
+		err = decoder.Decode(captureInfo)
+		c.Assert(err, check.IsNil)
+		c.Assert(captureInfo.ID, check.Equals, server.capture.Info().ID)
+		resp.Body.Close()
+		return nil
+	}, retry.WithMaxTries(retryTime), retry.WithBackoffBaseDelay(50), retry.WithIsRetryableErr(cerrors.IsRetryableError))
+	c.Assert(err, check.IsNil)
+
+	// test cli sends request with a cert will success
+	err = retry.Do(ctx, func() error {
+		tlsConfig, err := security.ToTLSConfigWithVerify()
+		if err != nil {
+			c.Assert(err, check.IsNil)
+		}
+		cli := httputil.NewClient(tlsConfig)
+		resp, err := cli.Get(statusURL)
+		if err != nil {
+			return err
+		}
+		decoder := json.NewDecoder(resp.Body)
+		captureInfo := &model.CaptureInfo{}
+		err = decoder.Decode(captureInfo)
+		c.Assert(err, check.IsNil)
+		c.Assert(captureInfo.ID, check.Equals, server.capture.Info().ID)
+		resp.Body.Close()
+		return nil
+	}, retry.WithMaxTries(retryTime), retry.WithBackoffBaseDelay(50), retry.WithIsRetryableErr(cerrors.IsRetryableError))
+	c.Assert(err, check.IsNil)
+}
+
+//
+func (s *httpStatusSuite) TestServerTLSWithCommonName(c *check.C) {
+	defer testleak.AfterTest(c)
+	addr := tempurl.Alloc()[len("http://"):]
+	// specify a common name
+	security, err := security2.NewCredential4Test("test")
+	c.Assert(err, check.IsNil)
+	conf := config.GetDefaultServerConfig()
+	conf.Addr = addr
+	conf.AdvertiseAddr = addr
+	conf.Security = &security
+	config.StoreGlobalServerConfig(conf)
+
+	server, err := NewServer([]string{"https://127.0.0.1:2379"})
+	server.capture = capture.NewCapture4Test()
+	c.Assert(err, check.IsNil)
+	err = server.startStatusHTTP()
+	c.Assert(err, check.IsNil)
+	defer func() {
+		c.Assert(server.statusServer.Close(), check.IsNil)
+	}()
+
+	statusURL := fmt.Sprintf("https://%s/api/v1/status", addr)
+	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+	defer cancel()
+
+	// test cli sends request without a cert will fail
+	err = retry.Do(ctx, func() error {
+		tr := &http.Transport{
+			TLSClientConfig: &tls.Config{InsecureSkipVerify: true},
+		}
+		cli := &http.Client{Transport: tr}
+		resp, err := cli.Get(statusURL)
+		if err != nil {
+			return err
+		}
+		decoder := json.NewDecoder(resp.Body)
+		captureInfo := &model.CaptureInfo{}
+		err = decoder.Decode(captureInfo)
+		c.Assert(err, check.IsNil)
+		c.Assert(captureInfo.ID, check.Equals, server.capture.Info().ID)
+		resp.Body.Close()
+		return nil
+	}, retry.WithMaxTries(retryTime), retry.WithBackoffBaseDelay(50), retry.WithIsRetryableErr(cerrors.IsRetryableError))
+	c.Assert(strings.Contains(err.Error(), "remote error: tls: bad certificate"), check.IsTrue)
+
+	// test cli sends request with a cert will success
+	err = retry.Do(ctx, func() error {
+		tlsConfig, err := security.ToTLSConfigWithVerify()
+		if err != nil {
+			c.Assert(err, check.IsNil)
+		}
+		cli := httputil.NewClient(tlsConfig)
+		resp, err := cli.Get(statusURL)
+		if err != nil {
+			return err
+		}
+		decoder := json.NewDecoder(resp.Body)
+		captureInfo := &model.CaptureInfo{}
+		err = decoder.Decode(captureInfo)
+		c.Assert(err, check.IsNil)
+		c.Assert(captureInfo.ID, check.Equals, server.capture.Info().ID)
+		resp.Body.Close()
+		return nil
+	}, retry.WithMaxTries(retryTime), retry.WithBackoffBaseDelay(50), retry.WithIsRetryableErr(cerrors.IsRetryableError))
+	c.Assert(err, check.IsNil)
+}

pkg/security/test_util.go

@@ -0,0 +1,132 @@
+// Copyright 2021 PingCAP, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package security
+
+import "os"
+
+// All these certificates or keys are use for testing only.
+var certPem = `-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----`
+
+var caPem = `-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----
+`
+
+var keyPem = `-----BEGIN RSA PRIVATE KEY-----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+-----END RSA PRIVATE KEY-----
+`
+
+// NewCredential4Test return a Credential for testing
+func NewCredential4Test(cn string) (Credential, error) {
+	res := Credential{}
+	if cn != "" {
+		res.CertAllowedCN = append(res.CertAllowedCN, cn)
+	}
+	cert, err := os.CreateTemp("", "ticdc-test-cert")
+	if err != nil {
+		return res, err
+	}
+	_, err = cert.Write([]byte(certPem))
+	if err != nil {
+		return res, err
+	}
+
+	ca, err := os.CreateTemp("", "ticdc-test-ca")
+	if err != nil {
+		return res, err
+	}
+	_, err = ca.Write([]byte(caPem))
+	if err != nil {
+		return res, err
+	}
+
+	key, err := os.CreateTemp("", "ticdc-test-key")
+	if err != nil {
+		return res, err
+	}
+	_, err = key.Write([]byte(keyPem))
+	if err != nil {
+		return res, err
+	}
+
+	res.CertPath = cert.Name()
+	res.CAPath = ca.Name()
+	res.KeyPath = key.Name()
+
+	return res, nil
+}