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creds_test.go
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creds_test.go
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/*
*
* Copyright 2018 gRPC authors.
*
* 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,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package test
import (
"context"
"errors"
"fmt"
"net"
"strings"
"testing"
"time"
"google.golang.org/grpc"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/connectivity"
"google.golang.org/grpc/credentials"
"google.golang.org/grpc/metadata"
"google.golang.org/grpc/resolver"
"google.golang.org/grpc/resolver/manual"
"google.golang.org/grpc/status"
"google.golang.org/grpc/tap"
testpb "google.golang.org/grpc/test/grpc_testing"
"google.golang.org/grpc/testdata"
)
const (
bundlePerRPCOnly = "perRPCOnly"
bundleTLSOnly = "tlsOnly"
)
type testCredsBundle struct {
t *testing.T
mode string
}
func (c *testCredsBundle) TransportCredentials() credentials.TransportCredentials {
if c.mode == bundlePerRPCOnly {
return nil
}
creds, err := credentials.NewClientTLSFromFile(testdata.Path("x509/server_ca_cert.pem"), "x.test.example.com")
if err != nil {
c.t.Logf("Failed to load credentials: %v", err)
return nil
}
return creds
}
func (c *testCredsBundle) PerRPCCredentials() credentials.PerRPCCredentials {
if c.mode == bundleTLSOnly {
return nil
}
return testPerRPCCredentials{}
}
func (c *testCredsBundle) NewWithMode(mode string) (credentials.Bundle, error) {
return &testCredsBundle{mode: mode}, nil
}
func (s) TestCredsBundleBoth(t *testing.T) {
te := newTest(t, env{name: "creds-bundle", network: "tcp", security: "empty"})
te.tapHandle = authHandle
te.customDialOptions = []grpc.DialOption{
grpc.WithCredentialsBundle(&testCredsBundle{t: t}),
}
creds, err := credentials.NewServerTLSFromFile(testdata.Path("x509/server1_cert.pem"), testdata.Path("x509/server1_key.pem"))
if err != nil {
t.Fatalf("Failed to generate credentials %v", err)
}
te.customServerOptions = []grpc.ServerOption{
grpc.Creds(creds),
}
te.startServer(testServer{}.Svc())
defer te.tearDown()
cc := te.clientConn()
tc := testpb.NewTestServiceClient(cc)
if _, err := tc.EmptyCall(context.Background(), &testpb.Empty{}); err != nil {
t.Fatalf("Test failed. Reason: %v", err)
}
}
func (s) TestCredsBundleTransportCredentials(t *testing.T) {
te := newTest(t, env{name: "creds-bundle", network: "tcp", security: "empty"})
te.customDialOptions = []grpc.DialOption{
grpc.WithCredentialsBundle(&testCredsBundle{t: t, mode: bundleTLSOnly}),
}
creds, err := credentials.NewServerTLSFromFile(testdata.Path("x509/server1_cert.pem"), testdata.Path("x509/server1_key.pem"))
if err != nil {
t.Fatalf("Failed to generate credentials %v", err)
}
te.customServerOptions = []grpc.ServerOption{
grpc.Creds(creds),
}
te.startServer(testServer{}.Svc())
defer te.tearDown()
cc := te.clientConn()
tc := testpb.NewTestServiceClient(cc)
if _, err := tc.EmptyCall(context.Background(), &testpb.Empty{}); err != nil {
t.Fatalf("Test failed. Reason: %v", err)
}
}
func (s) TestCredsBundlePerRPCCredentials(t *testing.T) {
te := newTest(t, env{name: "creds-bundle", network: "tcp", security: "empty"})
te.tapHandle = authHandle
te.customDialOptions = []grpc.DialOption{
grpc.WithCredentialsBundle(&testCredsBundle{t: t, mode: bundlePerRPCOnly}),
}
te.startServer(testServer{}.Svc())
defer te.tearDown()
cc := te.clientConn()
tc := testpb.NewTestServiceClient(cc)
if _, err := tc.EmptyCall(context.Background(), &testpb.Empty{}); err != nil {
t.Fatalf("Test failed. Reason: %v", err)
}
}
type clientTimeoutCreds struct {
credentials.TransportCredentials
timeoutReturned bool
}
func (c *clientTimeoutCreds) ClientHandshake(ctx context.Context, addr string, rawConn net.Conn) (net.Conn, credentials.AuthInfo, error) {
if !c.timeoutReturned {
c.timeoutReturned = true
return nil, nil, context.DeadlineExceeded
}
return rawConn, nil, nil
}
func (c *clientTimeoutCreds) Info() credentials.ProtocolInfo {
return credentials.ProtocolInfo{}
}
func (c *clientTimeoutCreds) Clone() credentials.TransportCredentials {
return nil
}
func (s) TestNonFailFastRPCSucceedOnTimeoutCreds(t *testing.T) {
te := newTest(t, env{name: "timeout-cred", network: "tcp", security: "empty"})
te.userAgent = testAppUA
te.startServer(testServer{security: te.e.security}.Svc())
defer te.tearDown()
cc := te.clientConn(grpc.WithTransportCredentials(&clientTimeoutCreds{}))
tc := testpb.NewTestServiceClient(cc)
// This unary call should succeed, because ClientHandshake will succeed for the second time.
if _, err := tc.EmptyCall(context.Background(), &testpb.Empty{}, grpc.WaitForReady(true)); err != nil {
te.t.Fatalf("TestService/EmptyCall(_, _) = _, %v, want <nil>", err)
}
}
type methodTestCreds struct{}
func (m *methodTestCreds) GetRequestMetadata(ctx context.Context, uri ...string) (map[string]string, error) {
ri, _ := credentials.RequestInfoFromContext(ctx)
return nil, status.Errorf(codes.Unknown, ri.Method)
}
func (m *methodTestCreds) RequireTransportSecurity() bool { return false }
func (s) TestGRPCMethodAccessibleToCredsViaContextRequestInfo(t *testing.T) {
const wantMethod = "/grpc.testing.TestService/EmptyCall"
te := newTest(t, env{name: "context-request-info", network: "tcp"})
te.userAgent = testAppUA
te.startServer(testServer{security: te.e.security}.Svc())
defer te.tearDown()
cc := te.clientConn(grpc.WithPerRPCCredentials(&methodTestCreds{}))
tc := testpb.NewTestServiceClient(cc)
ctx, cancel := context.WithTimeout(context.Background(), 3*time.Second)
defer cancel()
if _, err := tc.EmptyCall(ctx, &testpb.Empty{}); status.Convert(err).Message() != wantMethod {
t.Fatalf("ss.client.EmptyCall(_, _) = _, %v; want _, _.Message()=%q", err, wantMethod)
}
if _, err := tc.EmptyCall(ctx, &testpb.Empty{}, grpc.WaitForReady(true)); status.Convert(err).Message() != wantMethod {
t.Fatalf("ss.client.EmptyCall(_, _) = _, %v; want _, _.Message()=%q", err, wantMethod)
}
}
const clientAlwaysFailCredErrorMsg = "clientAlwaysFailCred always fails"
type clientAlwaysFailCred struct {
credentials.TransportCredentials
}
func (c clientAlwaysFailCred) ClientHandshake(ctx context.Context, addr string, rawConn net.Conn) (net.Conn, credentials.AuthInfo, error) {
return nil, nil, errors.New(clientAlwaysFailCredErrorMsg)
}
func (c clientAlwaysFailCred) Info() credentials.ProtocolInfo {
return credentials.ProtocolInfo{}
}
func (c clientAlwaysFailCred) Clone() credentials.TransportCredentials {
return nil
}
func (s) TestFailFastRPCErrorOnBadCertificates(t *testing.T) {
te := newTest(t, env{name: "bad-cred", network: "tcp", security: "empty", balancer: "round_robin"})
te.startServer(testServer{security: te.e.security}.Svc())
defer te.tearDown()
opts := []grpc.DialOption{grpc.WithTransportCredentials(clientAlwaysFailCred{})}
ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
defer cancel()
cc, err := grpc.DialContext(ctx, te.srvAddr, opts...)
if err != nil {
t.Fatalf("Dial(_) = %v, want %v", err, nil)
}
defer cc.Close()
tc := testpb.NewTestServiceClient(cc)
for i := 0; i < 1000; i++ {
// This loop runs for at most 1 second. The first several RPCs will fail
// with Unavailable because the connection hasn't started. When the
// first connection failed with creds error, the next RPC should also
// fail with the expected error.
if _, err = tc.EmptyCall(context.Background(), &testpb.Empty{}); strings.Contains(err.Error(), clientAlwaysFailCredErrorMsg) {
return
}
time.Sleep(time.Millisecond)
}
te.t.Fatalf("TestService/EmptyCall(_, _) = _, %v, want err.Error() contains %q", err, clientAlwaysFailCredErrorMsg)
}
func (s) TestWaitForReadyRPCErrorOnBadCertificates(t *testing.T) {
te := newTest(t, env{name: "bad-cred", network: "tcp", security: "empty", balancer: "round_robin"})
te.startServer(testServer{security: te.e.security}.Svc())
defer te.tearDown()
opts := []grpc.DialOption{grpc.WithTransportCredentials(clientAlwaysFailCred{})}
dctx, dcancel := context.WithTimeout(context.Background(), 10*time.Second)
defer dcancel()
cc, err := grpc.DialContext(dctx, te.srvAddr, opts...)
if err != nil {
t.Fatalf("Dial(_) = %v, want %v", err, nil)
}
defer cc.Close()
tc := testpb.NewTestServiceClient(cc)
ctx, cancel := context.WithTimeout(context.Background(), 1*time.Second)
defer cancel()
if _, err = tc.EmptyCall(ctx, &testpb.Empty{}, grpc.WaitForReady(true)); strings.Contains(err.Error(), clientAlwaysFailCredErrorMsg) {
return
}
te.t.Fatalf("TestService/EmptyCall(_, _) = _, %v, want err.Error() contains %q", err, clientAlwaysFailCredErrorMsg)
}
var (
// test authdata
authdata = map[string]string{
"test-key": "test-value",
"test-key2-bin": string([]byte{1, 2, 3}),
}
)
type testPerRPCCredentials struct{}
func (cr testPerRPCCredentials) GetRequestMetadata(ctx context.Context, uri ...string) (map[string]string, error) {
return authdata, nil
}
func (cr testPerRPCCredentials) RequireTransportSecurity() bool {
return false
}
func authHandle(ctx context.Context, info *tap.Info) (context.Context, error) {
md, ok := metadata.FromIncomingContext(ctx)
if !ok {
return ctx, fmt.Errorf("didn't find metadata in context")
}
for k, vwant := range authdata {
vgot, ok := md[k]
if !ok {
return ctx, fmt.Errorf("didn't find authdata key %v in context", k)
}
if vgot[0] != vwant {
return ctx, fmt.Errorf("for key %v, got value %v, want %v", k, vgot, vwant)
}
}
return ctx, nil
}
func (s) TestPerRPCCredentialsViaDialOptions(t *testing.T) {
for _, e := range listTestEnv() {
testPerRPCCredentialsViaDialOptions(t, e)
}
}
func testPerRPCCredentialsViaDialOptions(t *testing.T, e env) {
te := newTest(t, e)
te.tapHandle = authHandle
te.perRPCCreds = testPerRPCCredentials{}
te.startServer(testServer{security: e.security}.Svc())
defer te.tearDown()
cc := te.clientConn()
tc := testpb.NewTestServiceClient(cc)
if _, err := tc.EmptyCall(context.Background(), &testpb.Empty{}); err != nil {
t.Fatalf("Test failed. Reason: %v", err)
}
}
func (s) TestPerRPCCredentialsViaCallOptions(t *testing.T) {
for _, e := range listTestEnv() {
testPerRPCCredentialsViaCallOptions(t, e)
}
}
func testPerRPCCredentialsViaCallOptions(t *testing.T, e env) {
te := newTest(t, e)
te.tapHandle = authHandle
te.startServer(testServer{security: e.security}.Svc())
defer te.tearDown()
cc := te.clientConn()
tc := testpb.NewTestServiceClient(cc)
if _, err := tc.EmptyCall(context.Background(), &testpb.Empty{}, grpc.PerRPCCredentials(testPerRPCCredentials{})); err != nil {
t.Fatalf("Test failed. Reason: %v", err)
}
}
func (s) TestPerRPCCredentialsViaDialOptionsAndCallOptions(t *testing.T) {
for _, e := range listTestEnv() {
testPerRPCCredentialsViaDialOptionsAndCallOptions(t, e)
}
}
func testPerRPCCredentialsViaDialOptionsAndCallOptions(t *testing.T, e env) {
te := newTest(t, e)
te.perRPCCreds = testPerRPCCredentials{}
// When credentials are provided via both dial options and call options,
// we apply both sets.
te.tapHandle = func(ctx context.Context, _ *tap.Info) (context.Context, error) {
md, ok := metadata.FromIncomingContext(ctx)
if !ok {
return ctx, fmt.Errorf("couldn't find metadata in context")
}
for k, vwant := range authdata {
vgot, ok := md[k]
if !ok {
return ctx, fmt.Errorf("couldn't find metadata for key %v", k)
}
if len(vgot) != 2 {
return ctx, fmt.Errorf("len of value for key %v was %v, want 2", k, len(vgot))
}
if vgot[0] != vwant || vgot[1] != vwant {
return ctx, fmt.Errorf("value for %v was %v, want [%v, %v]", k, vgot, vwant, vwant)
}
}
return ctx, nil
}
te.startServer(testServer{security: e.security}.Svc())
defer te.tearDown()
cc := te.clientConn()
tc := testpb.NewTestServiceClient(cc)
if _, err := tc.EmptyCall(context.Background(), &testpb.Empty{}, grpc.PerRPCCredentials(testPerRPCCredentials{})); err != nil {
t.Fatalf("Test failed. Reason: %v", err)
}
}
const testAuthority = "test.auth.ori.ty"
type authorityCheckCreds struct {
credentials.TransportCredentials
got string
}
func (c *authorityCheckCreds) ClientHandshake(ctx context.Context, authority string, rawConn net.Conn) (net.Conn, credentials.AuthInfo, error) {
c.got = authority
return rawConn, nil, nil
}
func (c *authorityCheckCreds) Info() credentials.ProtocolInfo {
return credentials.ProtocolInfo{}
}
func (c *authorityCheckCreds) Clone() credentials.TransportCredentials {
return c
}
// This test makes sure that the authority client handshake gets is the endpoint
// in dial target, not the resolved ip address.
func (s) TestCredsHandshakeAuthority(t *testing.T) {
lis, err := net.Listen("tcp", "localhost:0")
if err != nil {
t.Fatal(err)
}
cred := &authorityCheckCreds{}
s := grpc.NewServer()
go s.Serve(lis)
defer s.Stop()
r := manual.NewBuilderWithScheme("whatever")
cc, err := grpc.Dial(r.Scheme()+":///"+testAuthority, grpc.WithTransportCredentials(cred), grpc.WithResolvers(r))
if err != nil {
t.Fatalf("grpc.Dial(%q) = %v", lis.Addr().String(), err)
}
defer cc.Close()
r.UpdateState(resolver.State{Addresses: []resolver.Address{{Addr: lis.Addr().String()}}})
ctx, cancel := context.WithTimeout(context.Background(), 100*time.Millisecond)
defer cancel()
for {
s := cc.GetState()
if s == connectivity.Ready {
break
}
if !cc.WaitForStateChange(ctx, s) {
t.Fatalf("ClientConn is not ready after 100 ms")
}
}
if cred.got != testAuthority {
t.Fatalf("client creds got authority: %q, want: %q", cred.got, testAuthority)
}
}
// This test makes sure that the authority client handshake gets is the endpoint
// of the ServerName of the address when it is set.
func (s) TestCredsHandshakeServerNameAuthority(t *testing.T) {
const testServerName = "test.server.name"
lis, err := net.Listen("tcp", "localhost:0")
if err != nil {
t.Fatal(err)
}
cred := &authorityCheckCreds{}
s := grpc.NewServer()
go s.Serve(lis)
defer s.Stop()
r := manual.NewBuilderWithScheme("whatever")
cc, err := grpc.Dial(r.Scheme()+":///"+testAuthority, grpc.WithTransportCredentials(cred), grpc.WithResolvers(r))
if err != nil {
t.Fatalf("grpc.Dial(%q) = %v", lis.Addr().String(), err)
}
defer cc.Close()
r.UpdateState(resolver.State{Addresses: []resolver.Address{{Addr: lis.Addr().String(), ServerName: testServerName}}})
ctx, cancel := context.WithTimeout(context.Background(), 100*time.Millisecond)
defer cancel()
for {
s := cc.GetState()
if s == connectivity.Ready {
break
}
if !cc.WaitForStateChange(ctx, s) {
t.Fatalf("ClientConn is not ready after 100 ms")
}
}
if cred.got != testServerName {
t.Fatalf("client creds got authority: %q, want: %q", cred.got, testAuthority)
}
}
type serverDispatchCred struct {
rawConnCh chan net.Conn
}
func (c *serverDispatchCred) ClientHandshake(ctx context.Context, addr string, rawConn net.Conn) (net.Conn, credentials.AuthInfo, error) {
return rawConn, nil, nil
}
func (c *serverDispatchCred) ServerHandshake(rawConn net.Conn) (net.Conn, credentials.AuthInfo, error) {
select {
case c.rawConnCh <- rawConn:
default:
}
return nil, nil, credentials.ErrConnDispatched
}
func (c *serverDispatchCred) Info() credentials.ProtocolInfo {
return credentials.ProtocolInfo{}
}
func (c *serverDispatchCred) Clone() credentials.TransportCredentials {
return nil
}
func (c *serverDispatchCred) OverrideServerName(s string) error {
return nil
}
func (c *serverDispatchCred) getRawConn() net.Conn {
return <-c.rawConnCh
}
func (s) TestServerCredsDispatch(t *testing.T) {
lis, err := net.Listen("tcp", "localhost:0")
if err != nil {
t.Fatal(err)
}
cred := &serverDispatchCred{
rawConnCh: make(chan net.Conn, 1),
}
s := grpc.NewServer(grpc.Creds(cred))
go s.Serve(lis)
defer s.Stop()
cc, err := grpc.Dial(lis.Addr().String(), grpc.WithTransportCredentials(cred))
if err != nil {
t.Fatalf("grpc.Dial(%q) = %v", lis.Addr().String(), err)
}
defer cc.Close()
rawConn := cred.getRawConn()
// Give grpc a chance to see the error and potentially close the connection.
// And check that connection is not closed after that.
time.Sleep(100 * time.Millisecond)
// Check rawConn is not closed.
if n, err := rawConn.Write([]byte{0}); n <= 0 || err != nil {
t.Errorf("Read() = %v, %v; want n>0, <nil>", n, err)
}
}