mirror of https://github.com/grpc/grpc-go.git
726 lines
20 KiB
Go
726 lines
20 KiB
Go
/*
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*
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* Copyright 2021 gRPC authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*/
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package authz_test
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import (
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"context"
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"crypto/tls"
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"crypto/x509"
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"io"
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"net"
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"os"
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"testing"
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"time"
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"google.golang.org/grpc"
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"google.golang.org/grpc/authz"
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"google.golang.org/grpc/codes"
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"google.golang.org/grpc/credentials"
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"google.golang.org/grpc/credentials/insecure"
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"google.golang.org/grpc/internal/grpctest"
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"google.golang.org/grpc/metadata"
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"google.golang.org/grpc/status"
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pb "google.golang.org/grpc/test/grpc_testing"
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"google.golang.org/grpc/testdata"
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)
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type testServer struct {
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pb.UnimplementedTestServiceServer
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}
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func (s *testServer) UnaryCall(ctx context.Context, req *pb.SimpleRequest) (*pb.SimpleResponse, error) {
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return &pb.SimpleResponse{}, nil
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}
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func (s *testServer) StreamingInputCall(stream pb.TestService_StreamingInputCallServer) error {
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for {
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_, err := stream.Recv()
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if err == io.EOF {
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return stream.SendAndClose(&pb.StreamingInputCallResponse{})
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}
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if err != nil {
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return err
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}
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}
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}
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type s struct {
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grpctest.Tester
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}
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func Test(t *testing.T) {
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grpctest.RunSubTests(t, s{})
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}
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var authzTests = map[string]struct {
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authzPolicy string
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md metadata.MD
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wantStatus *status.Status
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}{
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"DeniesRPCMatchInDenyNoMatchInAllow": {
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authzPolicy: `{
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"name": "authz",
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"allow_rules":
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[
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{
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"name": "allow_StreamingOutputCall",
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"request": {
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"paths":
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[
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"/grpc.testing.TestService/StreamingOutputCall"
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]
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}
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}
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],
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"deny_rules":
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[
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{
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"name": "deny_TestServiceCalls",
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"request": {
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"paths":
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[
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"/grpc.testing.TestService/*"
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],
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"headers":
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[
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{
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"key": "key-abc",
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"values":
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[
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"val-abc",
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"val-def"
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]
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}
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]
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}
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}
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]
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}`,
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md: metadata.Pairs("key-abc", "val-abc"),
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wantStatus: status.New(codes.PermissionDenied, "unauthorized RPC request rejected"),
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},
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"DeniesRPCMatchInDenyAndAllow": {
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authzPolicy: `{
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"name": "authz",
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"allow_rules":
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[
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{
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"name": "allow_all",
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"request": {
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"paths":
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[
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"*"
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]
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}
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}
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],
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"deny_rules":
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[
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{
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"name": "deny_all",
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"request": {
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"paths":
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[
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"*"
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]
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}
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}
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]
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}`,
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wantStatus: status.New(codes.PermissionDenied, "unauthorized RPC request rejected"),
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},
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"AllowsRPCNoMatchInDenyMatchInAllow": {
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authzPolicy: `{
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"name": "authz",
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"allow_rules":
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[
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{
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"name": "allow_all"
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}
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],
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"deny_rules":
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[
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{
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"name": "deny_TestServiceCalls",
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"request": {
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"paths":
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[
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"/grpc.testing.TestService/UnaryCall",
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"/grpc.testing.TestService/StreamingInputCall"
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],
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"headers":
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[
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{
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"key": "key-abc",
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"values":
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[
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"val-abc",
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"val-def"
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]
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}
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]
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}
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}
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]
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}`,
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md: metadata.Pairs("key-xyz", "val-xyz"),
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wantStatus: status.New(codes.OK, ""),
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},
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"DeniesRPCNoMatchInDenyAndAllow": {
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authzPolicy: `{
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"name": "authz",
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"allow_rules":
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[
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{
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"name": "allow_some_user",
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"source": {
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"principals":
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[
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"some_user"
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]
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}
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}
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],
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"deny_rules":
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[
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{
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"name": "deny_StreamingOutputCall",
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"request": {
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"paths":
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[
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"/grpc.testing.TestService/StreamingOutputCall"
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]
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}
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}
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]
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}`,
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wantStatus: status.New(codes.PermissionDenied, "unauthorized RPC request rejected"),
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},
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"AllowsRPCEmptyDenyMatchInAllow": {
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authzPolicy: `{
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"name": "authz",
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"allow_rules":
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[
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{
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"name": "allow_UnaryCall",
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"request":
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{
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"paths":
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[
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"/grpc.testing.TestService/UnaryCall"
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]
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}
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},
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{
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"name": "allow_StreamingInputCall",
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"request":
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{
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"paths":
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[
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"/grpc.testing.TestService/StreamingInputCall"
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]
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}
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}
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]
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}`,
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wantStatus: status.New(codes.OK, ""),
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},
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"DeniesRPCEmptyDenyNoMatchInAllow": {
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authzPolicy: `{
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"name": "authz",
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"allow_rules":
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[
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{
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"name": "allow_StreamingOutputCall",
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"request":
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{
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"paths":
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[
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"/grpc.testing.TestService/StreamingOutputCall"
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]
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}
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}
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]
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}`,
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wantStatus: status.New(codes.PermissionDenied, "unauthorized RPC request rejected"),
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},
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"DeniesRPCRequestWithPrincipalsFieldOnUnauthenticatedConnection": {
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authzPolicy: `{
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"name": "authz",
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"allow_rules":
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[
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{
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"name": "allow_authenticated",
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"source": {
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"principals": ["*", ""]
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}
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}
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]
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}`,
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wantStatus: status.New(codes.PermissionDenied, "unauthorized RPC request rejected"),
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},
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"DeniesRPCRequestNoMatchInAllowFailsPresenceMatch": {
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authzPolicy: `{
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"name": "authz",
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"allow_rules":
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[
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{
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"name": "allow_TestServiceCalls",
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"request": {
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"paths":
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[
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"/grpc.testing.TestService/*"
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],
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"headers":
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[
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{
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"key": "key-abc",
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"values":
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[
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"*"
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]
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}
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]
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}
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}
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]
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}`,
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md: metadata.Pairs("key-abc", ""),
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wantStatus: status.New(codes.PermissionDenied, "unauthorized RPC request rejected"),
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},
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}
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func (s) TestStaticPolicyEnd2End(t *testing.T) {
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for name, test := range authzTests {
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t.Run(name, func(t *testing.T) {
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// Start a gRPC server with gRPC authz unary and stream server interceptors.
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i, _ := authz.NewStatic(test.authzPolicy)
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s := grpc.NewServer(
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grpc.ChainUnaryInterceptor(i.UnaryInterceptor),
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grpc.ChainStreamInterceptor(i.StreamInterceptor))
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defer s.Stop()
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pb.RegisterTestServiceServer(s, &testServer{})
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lis, err := net.Listen("tcp", "localhost:0")
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if err != nil {
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t.Fatalf("error listening: %v", err)
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}
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go s.Serve(lis)
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// Establish a connection to the server.
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clientConn, err := grpc.Dial(lis.Addr().String(), grpc.WithTransportCredentials(insecure.NewCredentials()))
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if err != nil {
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t.Fatalf("grpc.Dial(%v) failed: %v", lis.Addr().String(), err)
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}
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defer clientConn.Close()
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client := pb.NewTestServiceClient(clientConn)
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ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
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defer cancel()
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ctx = metadata.NewOutgoingContext(ctx, test.md)
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// Verifying authorization decision for Unary RPC.
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_, err = client.UnaryCall(ctx, &pb.SimpleRequest{})
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if got := status.Convert(err); got.Code() != test.wantStatus.Code() || got.Message() != test.wantStatus.Message() {
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t.Fatalf("[UnaryCall] error want:{%v} got:{%v}", test.wantStatus.Err(), got.Err())
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}
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// Verifying authorization decision for Streaming RPC.
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stream, err := client.StreamingInputCall(ctx)
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if err != nil {
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t.Fatalf("failed StreamingInputCall err: %v", err)
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}
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req := &pb.StreamingInputCallRequest{
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Payload: &pb.Payload{
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Body: []byte("hi"),
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},
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}
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if err := stream.Send(req); err != nil && err != io.EOF {
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t.Fatalf("failed stream.Send err: %v", err)
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}
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_, err = stream.CloseAndRecv()
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if got := status.Convert(err); got.Code() != test.wantStatus.Code() || got.Message() != test.wantStatus.Message() {
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t.Fatalf("[StreamingCall] error want:{%v} got:{%v}", test.wantStatus.Err(), got.Err())
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}
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})
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}
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}
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func (s) TestAllowsRPCRequestWithPrincipalsFieldOnTLSAuthenticatedConnection(t *testing.T) {
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authzPolicy := `{
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"name": "authz",
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"allow_rules":
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[
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{
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"name": "allow_authenticated",
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"source": {
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"principals": ["*", ""]
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}
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}
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]
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}`
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// Start a gRPC server with gRPC authz unary server interceptor.
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i, _ := authz.NewStatic(authzPolicy)
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creds, err := credentials.NewServerTLSFromFile(testdata.Path("x509/server1_cert.pem"), testdata.Path("x509/server1_key.pem"))
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if err != nil {
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t.Fatalf("failed to generate credentials: %v", err)
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}
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s := grpc.NewServer(
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grpc.Creds(creds),
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grpc.ChainUnaryInterceptor(i.UnaryInterceptor))
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defer s.Stop()
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pb.RegisterTestServiceServer(s, &testServer{})
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lis, err := net.Listen("tcp", "localhost:0")
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if err != nil {
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t.Fatalf("error listening: %v", err)
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}
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go s.Serve(lis)
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// Establish a connection to the server.
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creds, err = credentials.NewClientTLSFromFile(testdata.Path("x509/server_ca_cert.pem"), "x.test.example.com")
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if err != nil {
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t.Fatalf("failed to load credentials: %v", err)
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}
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clientConn, err := grpc.Dial(lis.Addr().String(), grpc.WithTransportCredentials(creds))
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if err != nil {
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t.Fatalf("grpc.Dial(%v) failed: %v", lis.Addr().String(), err)
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}
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defer clientConn.Close()
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client := pb.NewTestServiceClient(clientConn)
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ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
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defer cancel()
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// Verifying authorization decision.
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if _, err = client.UnaryCall(ctx, &pb.SimpleRequest{}); err != nil {
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t.Fatalf("client.UnaryCall(_, _) = %v; want nil", err)
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}
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}
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func (s) TestAllowsRPCRequestWithPrincipalsFieldOnMTLSAuthenticatedConnection(t *testing.T) {
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authzPolicy := `{
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"name": "authz",
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"allow_rules":
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[
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{
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"name": "allow_authenticated",
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"source": {
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"principals": ["*", ""]
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}
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}
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]
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}`
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// Start a gRPC server with gRPC authz unary server interceptor.
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i, _ := authz.NewStatic(authzPolicy)
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cert, err := tls.LoadX509KeyPair(testdata.Path("x509/server1_cert.pem"), testdata.Path("x509/server1_key.pem"))
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if err != nil {
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t.Fatalf("tls.LoadX509KeyPair(x509/server1_cert.pem, x509/server1_key.pem) failed: %v", err)
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}
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ca, err := os.ReadFile(testdata.Path("x509/client_ca_cert.pem"))
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if err != nil {
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t.Fatalf("os.ReadFile(x509/client_ca_cert.pem) failed: %v", err)
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}
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certPool := x509.NewCertPool()
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if !certPool.AppendCertsFromPEM(ca) {
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t.Fatal("failed to append certificates")
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}
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creds := credentials.NewTLS(&tls.Config{
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ClientAuth: tls.RequireAndVerifyClientCert,
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Certificates: []tls.Certificate{cert},
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ClientCAs: certPool,
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})
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s := grpc.NewServer(
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grpc.Creds(creds),
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grpc.ChainUnaryInterceptor(i.UnaryInterceptor))
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defer s.Stop()
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pb.RegisterTestServiceServer(s, &testServer{})
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lis, err := net.Listen("tcp", "localhost:0")
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if err != nil {
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t.Fatalf("error listening: %v", err)
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}
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go s.Serve(lis)
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// Establish a connection to the server.
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cert, err = tls.LoadX509KeyPair(testdata.Path("x509/client1_cert.pem"), testdata.Path("x509/client1_key.pem"))
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if err != nil {
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t.Fatalf("tls.LoadX509KeyPair(x509/client1_cert.pem, x509/client1_key.pem) failed: %v", err)
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}
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ca, err = os.ReadFile(testdata.Path("x509/server_ca_cert.pem"))
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if err != nil {
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t.Fatalf("os.ReadFile(x509/server_ca_cert.pem) failed: %v", err)
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}
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roots := x509.NewCertPool()
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if !roots.AppendCertsFromPEM(ca) {
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t.Fatal("failed to append certificates")
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}
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creds = credentials.NewTLS(&tls.Config{
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Certificates: []tls.Certificate{cert},
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RootCAs: roots,
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ServerName: "x.test.example.com",
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})
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clientConn, err := grpc.Dial(lis.Addr().String(), grpc.WithTransportCredentials(creds))
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if err != nil {
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t.Fatalf("grpc.Dial(%v) failed: %v", lis.Addr().String(), err)
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}
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defer clientConn.Close()
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client := pb.NewTestServiceClient(clientConn)
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ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
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defer cancel()
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// Verifying authorization decision.
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if _, err = client.UnaryCall(ctx, &pb.SimpleRequest{}); err != nil {
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t.Fatalf("client.UnaryCall(_, _) = %v; want nil", err)
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}
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}
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func (s) TestFileWatcherEnd2End(t *testing.T) {
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for name, test := range authzTests {
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t.Run(name, func(t *testing.T) {
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file := createTmpPolicyFile(t, name, []byte(test.authzPolicy))
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i, _ := authz.NewFileWatcher(file, 1*time.Second)
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defer i.Close()
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// Start a gRPC server with gRPC authz unary and stream server interceptors.
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s := grpc.NewServer(
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grpc.ChainUnaryInterceptor(i.UnaryInterceptor),
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grpc.ChainStreamInterceptor(i.StreamInterceptor))
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defer s.Stop()
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pb.RegisterTestServiceServer(s, &testServer{})
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lis, err := net.Listen("tcp", "localhost:0")
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if err != nil {
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t.Fatalf("error listening: %v", err)
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}
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defer lis.Close()
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go s.Serve(lis)
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// Establish a connection to the server.
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clientConn, err := grpc.Dial(lis.Addr().String(), grpc.WithTransportCredentials(insecure.NewCredentials()))
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if err != nil {
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t.Fatalf("grpc.Dial(%v) failed: %v", lis.Addr().String(), err)
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}
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defer clientConn.Close()
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client := pb.NewTestServiceClient(clientConn)
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ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
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defer cancel()
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ctx = metadata.NewOutgoingContext(ctx, test.md)
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// Verifying authorization decision for Unary RPC.
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_, err = client.UnaryCall(ctx, &pb.SimpleRequest{})
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if got := status.Convert(err); got.Code() != test.wantStatus.Code() || got.Message() != test.wantStatus.Message() {
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t.Fatalf("[UnaryCall] error want:{%v} got:{%v}", test.wantStatus.Err(), got.Err())
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}
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// Verifying authorization decision for Streaming RPC.
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stream, err := client.StreamingInputCall(ctx)
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if err != nil {
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t.Fatalf("failed StreamingInputCall err: %v", err)
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|
}
|
|
req := &pb.StreamingInputCallRequest{
|
|
Payload: &pb.Payload{
|
|
Body: []byte("hi"),
|
|
},
|
|
}
|
|
if err := stream.Send(req); err != nil && err != io.EOF {
|
|
t.Fatalf("failed stream.Send err: %v", err)
|
|
}
|
|
_, err = stream.CloseAndRecv()
|
|
if got := status.Convert(err); got.Code() != test.wantStatus.Code() || got.Message() != test.wantStatus.Message() {
|
|
t.Fatalf("[StreamingCall] error want:{%v} got:{%v}", test.wantStatus.Err(), got.Err())
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
func retryUntil(ctx context.Context, tsc pb.TestServiceClient, want *status.Status) (lastErr error) {
|
|
for ctx.Err() == nil {
|
|
_, lastErr = tsc.UnaryCall(ctx, &pb.SimpleRequest{})
|
|
if s := status.Convert(lastErr); s.Code() == want.Code() && s.Message() == want.Message() {
|
|
return nil
|
|
}
|
|
time.Sleep(20 * time.Millisecond)
|
|
}
|
|
return lastErr
|
|
}
|
|
|
|
func (s) TestFileWatcher_ValidPolicyRefresh(t *testing.T) {
|
|
valid1 := authzTests["DeniesRPCMatchInDenyAndAllow"]
|
|
file := createTmpPolicyFile(t, "valid_policy_refresh", []byte(valid1.authzPolicy))
|
|
i, _ := authz.NewFileWatcher(file, 100*time.Millisecond)
|
|
defer i.Close()
|
|
|
|
// Start a gRPC server with gRPC authz unary server interceptor.
|
|
s := grpc.NewServer(
|
|
grpc.ChainUnaryInterceptor(i.UnaryInterceptor))
|
|
defer s.Stop()
|
|
pb.RegisterTestServiceServer(s, &testServer{})
|
|
|
|
lis, err := net.Listen("tcp", "localhost:0")
|
|
if err != nil {
|
|
t.Fatalf("error listening: %v", err)
|
|
}
|
|
defer lis.Close()
|
|
go s.Serve(lis)
|
|
|
|
// Establish a connection to the server.
|
|
clientConn, err := grpc.Dial(lis.Addr().String(), grpc.WithTransportCredentials(insecure.NewCredentials()))
|
|
if err != nil {
|
|
t.Fatalf("grpc.Dial(%v) failed: %v", lis.Addr().String(), err)
|
|
}
|
|
defer clientConn.Close()
|
|
client := pb.NewTestServiceClient(clientConn)
|
|
|
|
ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
|
|
defer cancel()
|
|
|
|
// Verifying authorization decision.
|
|
_, err = client.UnaryCall(ctx, &pb.SimpleRequest{})
|
|
if got := status.Convert(err); got.Code() != valid1.wantStatus.Code() || got.Message() != valid1.wantStatus.Message() {
|
|
t.Fatalf("client.UnaryCall(_, _) = %v; want = %v", got.Err(), valid1.wantStatus.Err())
|
|
}
|
|
|
|
// Rewrite the file with a different valid authorization policy.
|
|
valid2 := authzTests["AllowsRPCEmptyDenyMatchInAllow"]
|
|
if err := os.WriteFile(file, []byte(valid2.authzPolicy), os.ModePerm); err != nil {
|
|
t.Fatalf("os.WriteFile(%q) failed: %v", file, err)
|
|
}
|
|
|
|
// Verifying authorization decision.
|
|
if got := retryUntil(ctx, client, valid2.wantStatus); got != nil {
|
|
t.Fatalf("client.UnaryCall(_, _) = %v; want = %v", got, valid2.wantStatus.Err())
|
|
}
|
|
}
|
|
|
|
func (s) TestFileWatcher_InvalidPolicySkipReload(t *testing.T) {
|
|
valid := authzTests["DeniesRPCMatchInDenyAndAllow"]
|
|
file := createTmpPolicyFile(t, "invalid_policy_skip_reload", []byte(valid.authzPolicy))
|
|
i, _ := authz.NewFileWatcher(file, 20*time.Millisecond)
|
|
defer i.Close()
|
|
|
|
// Start a gRPC server with gRPC authz unary server interceptors.
|
|
s := grpc.NewServer(
|
|
grpc.ChainUnaryInterceptor(i.UnaryInterceptor))
|
|
defer s.Stop()
|
|
pb.RegisterTestServiceServer(s, &testServer{})
|
|
|
|
lis, err := net.Listen("tcp", "localhost:0")
|
|
if err != nil {
|
|
t.Fatalf("error listening: %v", err)
|
|
}
|
|
defer lis.Close()
|
|
go s.Serve(lis)
|
|
|
|
// Establish a connection to the server.
|
|
clientConn, err := grpc.Dial(lis.Addr().String(), grpc.WithTransportCredentials(insecure.NewCredentials()))
|
|
if err != nil {
|
|
t.Fatalf("grpc.Dial(%v) failed: %v", lis.Addr().String(), err)
|
|
}
|
|
defer clientConn.Close()
|
|
client := pb.NewTestServiceClient(clientConn)
|
|
|
|
ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
|
|
defer cancel()
|
|
|
|
// Verifying authorization decision.
|
|
_, err = client.UnaryCall(ctx, &pb.SimpleRequest{})
|
|
if got := status.Convert(err); got.Code() != valid.wantStatus.Code() || got.Message() != valid.wantStatus.Message() {
|
|
t.Fatalf("client.UnaryCall(_, _) = %v; want = %v", got.Err(), valid.wantStatus.Err())
|
|
}
|
|
|
|
// Skips the invalid policy update, and continues to use the valid policy.
|
|
if err := os.WriteFile(file, []byte("{}"), os.ModePerm); err != nil {
|
|
t.Fatalf("os.WriteFile(%q) failed: %v", file, err)
|
|
}
|
|
|
|
// Wait 40 ms for background go routine to read updated files.
|
|
time.Sleep(40 * time.Millisecond)
|
|
|
|
// Verifying authorization decision.
|
|
_, err = client.UnaryCall(ctx, &pb.SimpleRequest{})
|
|
if got := status.Convert(err); got.Code() != valid.wantStatus.Code() || got.Message() != valid.wantStatus.Message() {
|
|
t.Fatalf("client.UnaryCall(_, _) = %v; want = %v", got.Err(), valid.wantStatus.Err())
|
|
}
|
|
}
|
|
|
|
func (s) TestFileWatcher_RecoversFromReloadFailure(t *testing.T) {
|
|
valid1 := authzTests["DeniesRPCMatchInDenyAndAllow"]
|
|
file := createTmpPolicyFile(t, "recovers_from_reload_failure", []byte(valid1.authzPolicy))
|
|
i, _ := authz.NewFileWatcher(file, 100*time.Millisecond)
|
|
defer i.Close()
|
|
|
|
// Start a gRPC server with gRPC authz unary server interceptors.
|
|
s := grpc.NewServer(
|
|
grpc.ChainUnaryInterceptor(i.UnaryInterceptor))
|
|
defer s.Stop()
|
|
pb.RegisterTestServiceServer(s, &testServer{})
|
|
|
|
lis, err := net.Listen("tcp", "localhost:0")
|
|
if err != nil {
|
|
t.Fatalf("error listening: %v", err)
|
|
}
|
|
defer lis.Close()
|
|
go s.Serve(lis)
|
|
|
|
// Establish a connection to the server.
|
|
clientConn, err := grpc.Dial(lis.Addr().String(), grpc.WithTransportCredentials(insecure.NewCredentials()))
|
|
if err != nil {
|
|
t.Fatalf("grpc.Dial(%v) failed: %v", lis.Addr().String(), err)
|
|
}
|
|
defer clientConn.Close()
|
|
client := pb.NewTestServiceClient(clientConn)
|
|
|
|
ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
|
|
defer cancel()
|
|
|
|
// Verifying authorization decision.
|
|
_, err = client.UnaryCall(ctx, &pb.SimpleRequest{})
|
|
if got := status.Convert(err); got.Code() != valid1.wantStatus.Code() || got.Message() != valid1.wantStatus.Message() {
|
|
t.Fatalf("client.UnaryCall(_, _) = %v; want = %v", got.Err(), valid1.wantStatus.Err())
|
|
}
|
|
|
|
// Skips the invalid policy update, and continues to use the valid policy.
|
|
if err := os.WriteFile(file, []byte("{}"), os.ModePerm); err != nil {
|
|
t.Fatalf("os.WriteFile(%q) failed: %v", file, err)
|
|
}
|
|
|
|
// Wait 120 ms for background go routine to read updated files.
|
|
time.Sleep(120 * time.Millisecond)
|
|
|
|
// Verifying authorization decision.
|
|
_, err = client.UnaryCall(ctx, &pb.SimpleRequest{})
|
|
if got := status.Convert(err); got.Code() != valid1.wantStatus.Code() || got.Message() != valid1.wantStatus.Message() {
|
|
t.Fatalf("client.UnaryCall(_, _) = %v; want = %v", got.Err(), valid1.wantStatus.Err())
|
|
}
|
|
|
|
// Rewrite the file with a different valid authorization policy.
|
|
valid2 := authzTests["AllowsRPCEmptyDenyMatchInAllow"]
|
|
if err := os.WriteFile(file, []byte(valid2.authzPolicy), os.ModePerm); err != nil {
|
|
t.Fatalf("os.WriteFile(%q) failed: %v", file, err)
|
|
}
|
|
|
|
// Verifying authorization decision.
|
|
if got := retryUntil(ctx, client, valid2.wantStatus); got != nil {
|
|
t.Fatalf("client.UnaryCall(_, _) = %v; want = %v", got, valid2.wantStatus.Err())
|
|
}
|
|
}
|