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

credentials/local/local_test.go

@@ -0,0 +1,225 @@
+/*
+ *
+ * Copyright 2020 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 local
+
+import (
+	"context"
+	"fmt"
+	"net"
+	"runtime"
+	"strings"
+	"testing"
+	"time"
+
+	"google.golang.org/grpc/credentials"
+	"google.golang.org/grpc/internal/grpctest"
+)
+
+const defaultTestTimeout = 10 * time.Second
+
+type s struct {
+	grpctest.Tester
+}
+
+func Test(t *testing.T) {
+	grpctest.RunSubTests(t, s{})
+}
+
+func (s) TestGetSecurityLevel(t *testing.T) {
+	testCases := []struct {
+		testNetwork string
+		testAddr    string
+		want        credentials.SecurityLevel
+	}{
+		{
+			testNetwork: "tcp",
+			testAddr:    "127.0.0.1:10000",
+			want:        credentials.NoSecurity,
+		},
+		{
+			testNetwork: "tcp",
+			testAddr:    "[::1]:10000",
+			want:        credentials.NoSecurity,
+		},
+		{
+			testNetwork: "unix",
+			testAddr:    "/tmp/grpc_fullstack_test",
+			want:        credentials.PrivacyAndIntegrity,
+		},
+		{
+			testNetwork: "tcp",
+			testAddr:    "192.168.0.1:10000",
+			want:        credentials.InvalidSecurityLevel,
+		},
+	}
+	for _, tc := range testCases {
+		got, _ := getSecurityLevel(tc.testNetwork, tc.testAddr)
+		if got != tc.want {
+			t.Fatalf("GetSeurityLevel(%s, %s) returned %s but want %s", tc.testNetwork, tc.testAddr, got.String(), tc.want.String())
+		}
+	}
+}
+
+type serverHandshake func(net.Conn) (credentials.AuthInfo, error)
+
+func getSecurityLevelFromAuthInfo(ai credentials.AuthInfo) credentials.SecurityLevel {
+	if c, ok := ai.(interface {
+		GetCommonAuthInfo() credentials.CommonAuthInfo
+	}); ok {
+		return c.GetCommonAuthInfo().SecurityLevel
+	}
+	return credentials.InvalidSecurityLevel
+}
+
+// Server local handshake implementation.
+func serverLocalHandshake(conn net.Conn) (credentials.AuthInfo, error) {
+	cred := NewCredentials()
+	_, authInfo, err := cred.ServerHandshake(conn)
+	if err != nil {
+		return nil, err
+	}
+	return authInfo, nil
+}
+
+// Client local handshake implementation.
+func clientLocalHandshake(conn net.Conn, lisAddr string) (credentials.AuthInfo, error) {
+	cred := NewCredentials()
+	ctx, cancel := context.WithTimeout(context.Background(), defaultTestTimeout)
+	defer cancel()
+
+	_, authInfo, err := cred.ClientHandshake(ctx, lisAddr, conn)
+	if err != nil {
+		return nil, err
+	}
+	return authInfo, nil
+}
+
+// Client connects to a server with local credentials.
+func clientHandle(hs func(net.Conn, string) (credentials.AuthInfo, error), network, lisAddr string) (credentials.AuthInfo, error) {
+	conn, _ := net.Dial(network, lisAddr)
+	defer conn.Close()
+	clientAuthInfo, err := hs(conn, lisAddr)
+	if err != nil {
+		return nil, fmt.Errorf("Error on client while handshake")
+	}
+	return clientAuthInfo, nil
+}
+
+type testServerHandleResult struct {
+	authInfo credentials.AuthInfo
+	err      error
+}
+
+// Server accepts a client's connection with local credentials.
+func serverHandle(hs serverHandshake, done chan testServerHandleResult, lis net.Listener) {
+	serverRawConn, err := lis.Accept()
+	if err != nil {
+		done <- testServerHandleResult{authInfo: nil, err: fmt.Errorf("Server failed to accept connection. Error: %v", err)}
+		return
+	}
+	serverAuthInfo, err := hs(serverRawConn)
+	if err != nil {
+		serverRawConn.Close()
+		done <- testServerHandleResult{authInfo: nil, err: fmt.Errorf("Server failed while handshake. Error: %v", err)}
+		return
+	}
+	done <- testServerHandleResult{authInfo: serverAuthInfo, err: nil}
+}
+
+func serverAndClientHandshake(lis net.Listener) (credentials.SecurityLevel, error) {
+	done := make(chan testServerHandleResult, 1)
+	const timeout = 5 * time.Second
+	timer := time.NewTimer(timeout)
+	defer timer.Stop()
+	go serverHandle(serverLocalHandshake, done, lis)
+	defer lis.Close()
+	clientAuthInfo, err := clientHandle(clientLocalHandshake, lis.Addr().Network(), lis.Addr().String())
+	if err != nil {
+		return credentials.InvalidSecurityLevel, fmt.Errorf("Error at client-side: %v", err)
+	}
+	select {
+	case <-timer.C:
+		return credentials.InvalidSecurityLevel, fmt.Errorf("Test didn't finish in time")
+	case serverHandleResult := <-done:
+		if serverHandleResult.err != nil {
+			return credentials.InvalidSecurityLevel, fmt.Errorf("Error at server-side: %v", serverHandleResult.err)
+		}
+		clientSecLevel := getSecurityLevelFromAuthInfo(clientAuthInfo)
+		serverSecLevel := getSecurityLevelFromAuthInfo(serverHandleResult.authInfo)
+
+		if clientSecLevel == credentials.InvalidSecurityLevel {
+			return credentials.InvalidSecurityLevel, fmt.Errorf("Error at client-side: client's AuthInfo does not implement GetCommonAuthInfo()")
+		}
+		if serverSecLevel == credentials.InvalidSecurityLevel {
+			return credentials.InvalidSecurityLevel, fmt.Errorf("Error at server-side: server's AuthInfo does not implement GetCommonAuthInfo()")
+		}
+		if clientSecLevel != serverSecLevel {
+			return credentials.InvalidSecurityLevel, fmt.Errorf("client's AuthInfo contains %s but server's AuthInfo contains %s", clientSecLevel.String(), serverSecLevel.String())
+		}
+		return clientSecLevel, nil
+	}
+}
+
+func (s) TestServerAndClientHandshake(t *testing.T) {
+	testCases := []struct {
+		testNetwork string
+		testAddr    string
+		want        credentials.SecurityLevel
+	}{
+		{
+			testNetwork: "tcp",
+			testAddr:    "127.0.0.1:0",
+			want:        credentials.NoSecurity,
+		},
+		{
+			testNetwork: "tcp",
+			testAddr:    "[::1]:0",
+			want:        credentials.NoSecurity,
+		},
+		{
+			testNetwork: "tcp",
+			testAddr:    "localhost:0",
+			want:        credentials.NoSecurity,
+		},
+		{
+			testNetwork: "unix",
+			testAddr:    fmt.Sprintf("/tmp/grpc_fullstck_test%d", time.Now().UnixNano()),
+			want:        credentials.PrivacyAndIntegrity,
+		},
+	}
+	for _, tc := range testCases {
+		if runtime.GOOS == "windows" && tc.testNetwork == "unix" {
+			t.Skip("skipping tests for unix connections on Windows")
+		}
+		t.Run("serverAndClientHandshakeResult", func(t *testing.T) {
+			lis, err := net.Listen(tc.testNetwork, tc.testAddr)
+			if err != nil {
+				if strings.Contains(err.Error(), "bind: cannot assign requested address") ||
+					strings.Contains(err.Error(), "socket: address family not supported by protocol") {
+					t.Skipf("no support for address %v", tc.testAddr)
+				}
+				t.Fatalf("Failed to listen: %v", err)
+			}
+			got, err := serverAndClientHandshake(lis)
+			if got != tc.want {
+				t.Fatalf("serverAndClientHandshake(%s, %s) = %v, %v; want %v, nil", tc.testNetwork, tc.testAddr, got, err, tc.want)
+			}
+		})
+	}
+}