snapshot of https://github.com/grpc/grpc-go.git (master, 2026-09-15; blobs > 131072B omitted)

internal/xds/bootstrap/tlscreds/bundle_test.go

@@ -0,0 +1,162 @@
+/*
+ *
+ * Copyright 2023 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 tlscreds
+
+import (
+	"context"
+	"crypto/tls"
+	"crypto/x509"
+	"encoding/pem"
+	"errors"
+	"fmt"
+	"os"
+	"strings"
+	"testing"
+	"time"
+
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/credentials/tls/certprovider"
+	"google.golang.org/grpc/internal/credentials/spiffe"
+	"google.golang.org/grpc/internal/grpctest"
+	"google.golang.org/grpc/internal/stubserver"
+	"google.golang.org/grpc/internal/testutils"
+	"google.golang.org/grpc/testdata"
+
+	testgrpc "google.golang.org/grpc/interop/grpc_testing"
+	testpb "google.golang.org/grpc/interop/grpc_testing"
+)
+
+const defaultTestTimeout = 5 * time.Second
+
+type s struct {
+	grpctest.Tester
+}
+
+func Test(t *testing.T) {
+	grpctest.RunSubTests(t, s{})
+}
+
+type failingProvider struct{}
+
+func (f failingProvider) KeyMaterial(context.Context) (*certprovider.KeyMaterial, error) {
+	return nil, errors.New("test error")
+}
+
+func (f failingProvider) Close() {}
+
+func (s) TestFailingProvider(t *testing.T) {
+	s := stubserver.StartTestService(t, nil, grpc.Creds(testutils.CreateServerTLSCredentials(t, tls.RequireAndVerifyClientCert)))
+	defer s.Stop()
+
+	cfg := fmt.Sprintf(`{
+               "ca_certificate_file": "%s",
+               "certificate_file": "%s",
+               "private_key_file": "%s",
+			   "spiffe_trust_bundle_map_file": "%s"
+       }`,
+		testdata.Path("x509/server_ca_cert.pem"),
+		testdata.Path("x509/client1_cert.pem"),
+		testdata.Path("x509/client1_key.pem"),
+		testdata.Path("spiffe_end2end/client_spiffebundle.json"))
+	tlsBundle, stop, err := NewBundle([]byte(cfg))
+	if err != nil {
+		t.Fatalf("Failed to create TLS bundle: %v", err)
+	}
+	stop()
+
+	// Force a provider that returns an error, and make sure the client fails
+	// the handshake.
+	creds, ok := tlsBundle.TransportCredentials().(*reloadingCreds)
+	if !ok {
+		t.Fatalf("Got %T, expected reloadingCreds", tlsBundle.TransportCredentials())
+	}
+	creds.provider = &failingProvider{}
+
+	conn, err := grpc.NewClient(s.Address, grpc.WithCredentialsBundle(tlsBundle), grpc.WithAuthority("x.test.example.com"))
+	if err != nil {
+		t.Fatalf("Error dialing: %v", err)
+	}
+	defer conn.Close()
+
+	client := testgrpc.NewTestServiceClient(conn)
+	ctx, cancel := context.WithTimeout(context.Background(), defaultTestTimeout)
+	defer cancel()
+	_, err = client.EmptyCall(ctx, &testpb.Empty{})
+	if wantErr := "test error"; err == nil || !strings.Contains(err.Error(), wantErr) {
+		t.Errorf("EmptyCall() got err: %s, want err to contain: %s", err, wantErr)
+	}
+}
+
+func rawCertsFromFile(t *testing.T, filePath string) [][]byte {
+	t.Helper()
+	rawCert, err := os.ReadFile(testdata.Path(filePath))
+	if err != nil {
+		t.Fatalf("Reading certificate file failed: %v", err)
+	}
+	block, _ := pem.Decode(rawCert)
+	if block == nil || block.Type != "CERTIFICATE" {
+		t.Fatalf("pem.Decode() failed to decode certificate in file %q", "spiffe/server1_spiffe.pem")
+	}
+	return [][]byte{block.Bytes}
+}
+
+func (s) TestSPIFFEVerifyFuncMismatchedCert(t *testing.T) {
+	spiffeBundleBytes, err := os.ReadFile(testdata.Path("spiffe_end2end/client_spiffebundle.json"))
+	if err != nil {
+		t.Fatalf("Reading spiffebundle file failed: %v", err)
+	}
+	spiffeBundle, err := spiffe.BundleMapFromBytes(spiffeBundleBytes)
+	if err != nil {
+		t.Fatalf("spiffe.BundleMapFromBytes() failed: %v", err)
+	}
+	verifyFunc := buildSPIFFEVerifyFunc(spiffeBundle)
+	verifiedChains := [][]*x509.Certificate{}
+	tests := []struct {
+		name            string
+		rawCerts        [][]byte
+		wantErrContains string
+	}{
+		{
+			name:            "mismathed cert",
+			rawCerts:        rawCertsFromFile(t, "spiffe/server1_spiffe.pem"),
+			wantErrContains: "spiffe: x509 certificate Verify failed",
+		},
+		{
+			name:            "bad input cert",
+			rawCerts:        [][]byte{[]byte("NOT_GOOD_DATA")},
+			wantErrContains: "spiffe: verify function could not parse input certificate",
+		},
+		{
+			name:            "no input bytes",
+			rawCerts:        nil,
+			wantErrContains: "no valid input certificates",
+		},
+	}
+	for _, tc := range tests {
+		t.Run(tc.name, func(t *testing.T) {
+			err = verifyFunc(tc.rawCerts, verifiedChains)
+			if err == nil {
+				t.Fatalf("buildSPIFFEVerifyFunc call succeeded. want failure")
+			}
+			if !strings.Contains(err.Error(), tc.wantErrContains) {
+				t.Fatalf("buildSPIFFEVerifyFunc got err %v want err to contain %v", err, tc.wantErrContains)
+			}
+		})
+	}
+}