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