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//
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//
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// Copyright 2023 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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#include <memory>
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#include <gmock/gmock.h>
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#include <gtest/gtest.h>
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#include "absl/synchronization/notification.h"
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#include <grpc/grpc_security.h>
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#include <grpcpp/channel.h>
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#include <grpcpp/client_context.h>
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#include <grpcpp/create_channel.h>
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#include <grpcpp/server.h>
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#include <grpcpp/server_builder.h>
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#include "src/core/lib/iomgr/load_file.h"
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#include "test/core/util/port.h"
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#include "test/core/util/test_config.h"
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#include "test/cpp/end2end/test_service_impl.h"
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namespace grpc {
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namespace testing {
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namespace {
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constexpr char kCaCertPath[] = "src/core/tsi/test_creds/ca.pem";
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constexpr char kServerCertPath[] = "src/core/tsi/test_creds/server1.pem";
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constexpr char kServerKeyPath[] = "src/core/tsi/test_creds/server1.key";
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constexpr char kClientCertPath[] = "src/core/tsi/test_creds/client.pem";
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constexpr char kClientKeyPath[] = "src/core/tsi/test_creds/client.key";
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constexpr char kMessage[] = "Hello";
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std::string ReadFile(const std::string& file_path) {
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grpc_slice slice;
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GPR_ASSERT(GRPC_LOG_IF_ERROR("load_file",
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grpc_load_file(file_path.c_str(), 0, &slice)));
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std::string file_contents(grpc_core::StringViewFromSlice(slice));
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grpc_slice_unref(slice);
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return file_contents;
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}
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class SslCredentialsTest : public ::testing::Test {
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protected:
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void RunServer(absl::Notification* notification) {
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std::string root_cert = ReadFile(kCaCertPath);
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grpc::SslServerCredentialsOptions::PemKeyCertPair key_cert_pair = {
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ReadFile(kServerKeyPath), ReadFile(kServerCertPath)};
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// TODO(gtcooke94) Parametrize this test for TLS and mTLS as well
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grpc::SslServerCredentialsOptions ssl_options;
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ssl_options.pem_key_cert_pairs.push_back(key_cert_pair);
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ssl_options.pem_root_certs = root_cert;
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ssl_options.force_client_auth = true;
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grpc::ServerBuilder builder;
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TestServiceImpl service_;
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builder.AddListeningPort(server_addr_,
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grpc::SslServerCredentials(ssl_options));
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builder.RegisterService("foo.test.google.fr", &service_);
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server_ = builder.BuildAndStart();
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notification->Notify();
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server_->Wait();
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}
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void TearDown() override {
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if (server_ != nullptr) {
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server_->Shutdown();
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server_thread_->join();
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delete server_thread_;
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}
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}
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TestServiceImpl service_;
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std::unique_ptr<Server> server_ = nullptr;
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std::thread* server_thread_ = nullptr;
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std::string server_addr_;
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};
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void DoRpc(const std::string& server_addr,
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const SslCredentialsOptions& ssl_options,
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grpc_ssl_session_cache* cache, bool expect_session_reuse) {
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ChannelArguments channel_args;
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channel_args.SetPointer(std::string(GRPC_SSL_SESSION_CACHE_ARG), cache);
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channel_args.SetSslTargetNameOverride("foo.test.google.fr");
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std::shared_ptr<Channel> channel = grpc::CreateCustomChannel(
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server_addr, grpc::SslCredentials(ssl_options), channel_args);
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auto stub = grpc::testing::EchoTestService::NewStub(channel);
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grpc::testing::EchoRequest request;
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grpc::testing::EchoResponse response;
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request.set_message(kMessage);
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ClientContext context;
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context.set_deadline(grpc_timeout_seconds_to_deadline(/*time_s=*/10));
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grpc::Status result = stub->Echo(&context, request, &response);
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EXPECT_TRUE(result.ok());
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if (!result.ok()) {
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gpr_log(GPR_ERROR, "%s, %s", result.error_message().c_str(),
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result.error_details().c_str());
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}
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EXPECT_EQ(response.message(), kMessage);
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std::shared_ptr<const AuthContext> auth_context = context.auth_context();
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std::vector<grpc::string_ref> properties =
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auth_context->FindPropertyValues(GRPC_SSL_SESSION_REUSED_PROPERTY);
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ASSERT_EQ(properties.size(), 1u);
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if (expect_session_reuse) {
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EXPECT_EQ("true", ToString(properties[0]));
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} else {
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EXPECT_EQ("false", ToString(properties[0]));
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}
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}
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TEST_F(SslCredentialsTest, SequentialResumption) {
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server_addr_ = absl::StrCat("localhost:",
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std::to_string(grpc_pick_unused_port_or_die()));
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absl::Notification notification;
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server_thread_ = new std::thread([&]() { RunServer(¬ification); });
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notification.WaitForNotification();
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std::string root_cert = ReadFile(kCaCertPath);
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std::string client_key = ReadFile(kClientKeyPath);
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std::string client_cert = ReadFile(kClientCertPath);
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grpc::SslCredentialsOptions ssl_options;
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ssl_options.pem_root_certs = root_cert;
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ssl_options.pem_private_key = client_key;
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ssl_options.pem_cert_chain = client_cert;
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grpc_ssl_session_cache* cache = grpc_ssl_session_cache_create_lru(16);
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DoRpc(server_addr_, ssl_options, cache, /*expect_session_reuse=*/false);
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for (int i = 0; i < 10; i++) {
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DoRpc(server_addr_, ssl_options, cache, /*expect_session_reuse=*/true);
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}
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grpc_ssl_session_cache_destroy(cache);
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}
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TEST_F(SslCredentialsTest, ConcurrentResumption) {
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server_addr_ = absl::StrCat("localhost:",
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std::to_string(grpc_pick_unused_port_or_die()));
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absl::Notification notification;
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server_thread_ = new std::thread([&]() { RunServer(¬ification); });
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notification.WaitForNotification();
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std::string root_cert = ReadFile(kCaCertPath);
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std::string client_key = ReadFile(kClientKeyPath);
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std::string client_cert = ReadFile(kClientCertPath);
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grpc::SslCredentialsOptions ssl_options;
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ssl_options.pem_root_certs = root_cert;
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ssl_options.pem_private_key = client_key;
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ssl_options.pem_cert_chain = client_cert;
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grpc_ssl_session_cache* cache = grpc_ssl_session_cache_create_lru(16);
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DoRpc(server_addr_, ssl_options, cache, /*expect_session_reuse=*/false);
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std::vector<std::thread> threads;
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threads.reserve(10);
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for (int i = 0; i < 10; i++) {
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threads.push_back(std::thread([&]() {
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DoRpc(server_addr_, ssl_options, cache, /*expect_session_reuse=*/true);
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}));
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}
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for (auto& t : threads) {
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t.join();
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}
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grpc_ssl_session_cache_destroy(cache);
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}
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TEST_F(SslCredentialsTest, ResumptionFailsDueToNoCapacityInCache) {
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server_addr_ = absl::StrCat("localhost:",
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std::to_string(grpc_pick_unused_port_or_die()));
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absl::Notification notification;
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server_thread_ = new std::thread([&]() { RunServer(¬ification); });
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notification.WaitForNotification();
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std::string root_cert = ReadFile(kCaCertPath);
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std::string client_key = ReadFile(kClientKeyPath);
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std::string client_cert = ReadFile(kClientCertPath);
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grpc::SslCredentialsOptions ssl_options;
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ssl_options.pem_root_certs = root_cert;
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ssl_options.pem_private_key = client_key;
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ssl_options.pem_cert_chain = client_cert;
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grpc_ssl_session_cache* cache = grpc_ssl_session_cache_create_lru(0);
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DoRpc(server_addr_, ssl_options, cache, /*expect_session_reuse=*/false);
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DoRpc(server_addr_, ssl_options, cache, /*expect_session_reuse=*/false);
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grpc_ssl_session_cache_destroy(cache);
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}
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} // namespace
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} // namespace testing
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} // namespace grpc
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int main(int argc, char** argv) {
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grpc::testing::TestEnvironment env(&argc, argv);
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::testing::InitGoogleTest(&argc, argv);
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int ret = RUN_ALL_TESTS();
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return ret;
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}
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