| // Copyright 2014 The Chromium Authors |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "ipc/ipc_mojo_bootstrap.h" |
| |
| #include <cstdint> |
| #include <memory> |
| #include <utility> |
| |
| #include "base/run_loop.h" |
| #include "base/task/single_thread_task_runner.h" |
| #include "base/test/task_environment.h" |
| #include "ipc/ipc.mojom.h" |
| #include "ipc/ipc_test_base.h" |
| #include "mojo/core/test/multiprocess_test_helper.h" |
| #include "mojo/public/cpp/bindings/associated_receiver.h" |
| |
| namespace { |
| |
| constexpr int32_t kTestServerPid = 42; |
| constexpr int32_t kTestClientPid = 4242; |
| |
| class Connection { |
| public: |
| explicit Connection(std::unique_ptr<IPC::MojoBootstrap> bootstrap, |
| int32_t sender_id) |
| : bootstrap_(std::move(bootstrap)) { |
| mojo::PendingAssociatedRemote<IPC::mojom::Channel> sender; |
| bootstrap_->Connect(&sender, &receiver_); |
| sender_.Bind(std::move(sender)); |
| sender_->SetPeerPid(sender_id); |
| |
| // It's OK to start receiving right away even though `receiver_` isn't |
| // bound, because all of these tests are single-threaded and it will be |
| // bound before any incoming messages can be scheduled for processing. |
| bootstrap_->StartReceiving(); |
| } |
| |
| void TakeReceiver( |
| mojo::PendingAssociatedReceiver<IPC::mojom::Channel>* receiver) { |
| *receiver = std::move(receiver_); |
| } |
| |
| mojo::AssociatedRemote<IPC::mojom::Channel>& GetSender() { return sender_; } |
| |
| private: |
| mojo::AssociatedRemote<IPC::mojom::Channel> sender_; |
| mojo::PendingAssociatedReceiver<IPC::mojom::Channel> receiver_; |
| std::unique_ptr<IPC::MojoBootstrap> bootstrap_; |
| }; |
| |
| class PeerPidReceiver : public IPC::mojom::Channel { |
| public: |
| enum class MessageExpectation { |
| kNotExpected, |
| kExpectedValid, |
| kExpectedInvalid |
| }; |
| |
| PeerPidReceiver( |
| mojo::PendingAssociatedReceiver<IPC::mojom::Channel> receiver, |
| base::OnceClosure on_peer_pid_set, |
| MessageExpectation message_expectation = MessageExpectation::kNotExpected) |
| : receiver_(this, std::move(receiver)), |
| on_peer_pid_set_(std::move(on_peer_pid_set)), |
| message_expectation_(message_expectation) { |
| receiver_.set_disconnect_handler(disconnect_run_loop_.QuitClosure()); |
| } |
| |
| PeerPidReceiver(const PeerPidReceiver&) = delete; |
| PeerPidReceiver& operator=(const PeerPidReceiver&) = delete; |
| |
| ~PeerPidReceiver() override { |
| bool expected_message = |
| message_expectation_ != MessageExpectation::kNotExpected; |
| EXPECT_EQ(expected_message, received_message_); |
| } |
| |
| // mojom::Channel: |
| void SetPeerPid(int32_t pid) override { |
| peer_pid_ = pid; |
| std::move(on_peer_pid_set_).Run(); |
| } |
| |
| void Receive(IPC::MessageView message_view) override { |
| ASSERT_NE(MessageExpectation::kNotExpected, message_expectation_); |
| received_message_ = true; |
| |
| IPC::Message message( |
| reinterpret_cast<const char*>(message_view.bytes().data()), |
| message_view.bytes().size()); |
| bool expected_valid = |
| message_expectation_ == MessageExpectation::kExpectedValid; |
| EXPECT_EQ(expected_valid, message.IsValid()); |
| } |
| |
| void GetAssociatedInterface( |
| mojo::GenericPendingAssociatedReceiver receiver) override {} |
| |
| int32_t peer_pid() const { return peer_pid_; } |
| |
| void RunUntilDisconnect() { disconnect_run_loop_.Run(); } |
| |
| private: |
| mojo::AssociatedReceiver<IPC::mojom::Channel> receiver_; |
| base::OnceClosure on_peer_pid_set_; |
| MessageExpectation message_expectation_; |
| int32_t peer_pid_ = -1; |
| bool received_message_ = false; |
| base::RunLoop disconnect_run_loop_; |
| }; |
| |
| class IPCMojoBootstrapTest : public testing::Test { |
| protected: |
| mojo::core::test::MultiprocessTestHelper helper_; |
| }; |
| |
| TEST_F(IPCMojoBootstrapTest, Connect) { |
| base::test::SingleThreadTaskEnvironment task_environment; |
| Connection connection(IPC::MojoBootstrap::Create( |
| helper_.StartChild("IPCMojoBootstrapTestClient"), |
| IPC::Channel::MODE_SERVER, |
| base::SingleThreadTaskRunner::GetCurrentDefault(), |
| base::SingleThreadTaskRunner::GetCurrentDefault()), |
| kTestServerPid); |
| |
| mojo::PendingAssociatedReceiver<IPC::mojom::Channel> receiver; |
| connection.TakeReceiver(&receiver); |
| |
| base::RunLoop run_loop; |
| PeerPidReceiver impl(std::move(receiver), run_loop.QuitClosure()); |
| run_loop.Run(); |
| |
| EXPECT_EQ(kTestClientPid, impl.peer_pid()); |
| |
| impl.RunUntilDisconnect(); |
| EXPECT_TRUE(helper_.WaitForChildTestShutdown()); |
| } |
| |
| // A long running process that connects to us. |
| MULTIPROCESS_TEST_MAIN_WITH_SETUP( |
| IPCMojoBootstrapTestClientTestChildMain, |
| ::mojo::core::test::MultiprocessTestHelper::ChildSetup) { |
| base::test::SingleThreadTaskEnvironment task_environment; |
| Connection connection( |
| IPC::MojoBootstrap::Create( |
| std::move(mojo::core::test::MultiprocessTestHelper::primordial_pipe), |
| IPC::Channel::MODE_CLIENT, |
| base::SingleThreadTaskRunner::GetCurrentDefault(), |
| base::SingleThreadTaskRunner::GetCurrentDefault()), |
| kTestClientPid); |
| |
| mojo::PendingAssociatedReceiver<IPC::mojom::Channel> receiver; |
| connection.TakeReceiver(&receiver); |
| |
| base::RunLoop run_loop; |
| PeerPidReceiver impl(std::move(receiver), run_loop.QuitClosure()); |
| run_loop.Run(); |
| |
| EXPECT_EQ(kTestServerPid, impl.peer_pid()); |
| |
| return 0; |
| } |
| |
| TEST_F(IPCMojoBootstrapTest, ReceiveEmptyMessage) { |
| base::test::SingleThreadTaskEnvironment task_environment; |
| Connection connection( |
| IPC::MojoBootstrap::Create( |
| helper_.StartChild("IPCMojoBootstrapTestEmptyMessage"), |
| IPC::Channel::MODE_SERVER, |
| base::SingleThreadTaskRunner::GetCurrentDefault(), |
| base::SingleThreadTaskRunner::GetCurrentDefault()), |
| kTestServerPid); |
| |
| mojo::PendingAssociatedReceiver<IPC::mojom::Channel> receiver; |
| connection.TakeReceiver(&receiver); |
| |
| base::RunLoop run_loop; |
| PeerPidReceiver impl(std::move(receiver), run_loop.QuitClosure(), |
| PeerPidReceiver::MessageExpectation::kExpectedInvalid); |
| run_loop.Run(); |
| |
| // Wait for the Channel to be disconnected so we can reasonably assert that |
| // the child's empty message must have been received before we pass the test. |
| impl.RunUntilDisconnect(); |
| |
| EXPECT_TRUE(helper_.WaitForChildTestShutdown()); |
| } |
| |
| // A long running process that connects to us. |
| MULTIPROCESS_TEST_MAIN_WITH_SETUP( |
| IPCMojoBootstrapTestEmptyMessageTestChildMain, |
| ::mojo::core::test::MultiprocessTestHelper::ChildSetup) { |
| base::test::SingleThreadTaskEnvironment task_environment; |
| Connection connection( |
| IPC::MojoBootstrap::Create( |
| std::move(mojo::core::test::MultiprocessTestHelper::primordial_pipe), |
| IPC::Channel::MODE_CLIENT, |
| base::SingleThreadTaskRunner::GetCurrentDefault(), |
| base::SingleThreadTaskRunner::GetCurrentDefault()), |
| kTestClientPid); |
| |
| mojo::PendingAssociatedReceiver<IPC::mojom::Channel> receiver; |
| connection.TakeReceiver(&receiver); |
| auto& sender = connection.GetSender(); |
| |
| uint8_t data = 0; |
| sender->Receive(IPC::MessageView(base::make_span(&data, 0u), |
| absl::nullopt /* handles */)); |
| |
| base::RunLoop run_loop; |
| PeerPidReceiver impl(std::move(receiver), run_loop.QuitClosure()); |
| run_loop.Run(); |
| |
| return 0; |
| } |
| |
| } // namespace |