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// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "remoting/host/chromoting_host_services_client.h"
#include <memory>
#include <vector>
#include "base/environment.h"
#include "base/functional/bind.h"
#include "base/functional/callback.h"
#include "base/memory/ptr_util.h"
#include "base/memory/raw_ptr.h"
#include "base/run_loop.h"
#include "base/test/task_environment.h"
#include "build/build_config.h"
#include "mojo/public/cpp/bindings/pending_receiver.h"
#include "mojo/public/cpp/bindings/pending_remote.h"
#include "mojo/public/cpp/bindings/receiver_set.h"
#include "mojo/public/cpp/system/isolated_connection.h"
#include "remoting/base/constants.h"
#include "remoting/host/mojo_caller_security_checker.h"
#include "remoting/host/mojom/chromoting_host_services.mojom.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace remoting {
class ChromotingHostServicesClientTest : public testing::Test,
public mojom::ChromotingHostServices {
public:
ChromotingHostServicesClientTest();
~ChromotingHostServicesClientTest() override;
void BindSessionServices(
mojo::PendingReceiver<mojom::ChromotingSessionServices> receiver)
override;
void TearDown() override;
protected:
void SetChromeRemoteDesktopSessionEnvVar(bool is_crd_session);
void WaitForSessionServicesBound();
base::test::TaskEnvironment task_environment_;
raw_ptr<base::Environment, DanglingUntriaged> environment_;
bool is_server_started_ = true;
std::unique_ptr<ChromotingHostServicesClient> client_;
mojo::ReceiverSet<mojom::ChromotingHostServices> host_services_receivers_;
std::vector<mojo::PendingReceiver<mojom::ChromotingSessionServices>>
session_services_receivers_;
private:
mojo::PendingRemote<mojom::ChromotingHostServices> ConnectToServer();
// Used to block the thread until a session services bind request is received.
std::unique_ptr<base::RunLoop> session_services_bound_run_loop_;
};
ChromotingHostServicesClientTest::ChromotingHostServicesClientTest() {
auto environment = base::Environment::Create();
environment_ = environment.get();
client_ = base::WrapUnique(new ChromotingHostServicesClient(
std::move(environment),
base::BindRepeating(&ChromotingHostServicesClientTest::ConnectToServer,
base::Unretained(this))));
session_services_bound_run_loop_ = std::make_unique<base::RunLoop>();
SetChromeRemoteDesktopSessionEnvVar(true);
}
ChromotingHostServicesClientTest::~ChromotingHostServicesClientTest() = default;
void ChromotingHostServicesClientTest::BindSessionServices(
mojo::PendingReceiver<mojom::ChromotingSessionServices> receiver) {
session_services_receivers_.push_back(std::move(receiver));
session_services_bound_run_loop_->Quit();
}
void ChromotingHostServicesClientTest::TearDown() {
task_environment_.RunUntilIdle();
}
void ChromotingHostServicesClientTest::SetChromeRemoteDesktopSessionEnvVar(
bool is_crd_session) {
#if BUILDFLAG(IS_LINUX)
if (is_crd_session) {
environment_->SetVar(kChromeRemoteDesktopSessionEnvVar, "1");
} else {
environment_->UnSetVar(kChromeRemoteDesktopSessionEnvVar);
}
#endif
// No-op on other platforms.
}
void ChromotingHostServicesClientTest::WaitForSessionServicesBound() {
session_services_bound_run_loop_->Run();
session_services_bound_run_loop_ = std::make_unique<base::RunLoop>();
}
mojo::PendingRemote<mojom::ChromotingHostServices>
ChromotingHostServicesClientTest::ConnectToServer() {
if (!is_server_started_) {
return mojo::PendingRemote<mojom::ChromotingHostServices>();
}
mojo::PendingReceiver<mojom::ChromotingHostServices> pending_receiver;
auto pending_remote = pending_receiver.InitWithNewPipeAndPassRemote();
host_services_receivers_.Add(this, std::move(pending_receiver));
return pending_remote;
}
TEST_F(ChromotingHostServicesClientTest,
ServerNotRunning_GetSessionServicesReturnsNull) {
is_server_started_ = false;
ASSERT_EQ(client_->GetSessionServices(), nullptr);
}
#if BUILDFLAG(IS_LINUX)
TEST_F(ChromotingHostServicesClientTest,
NotInRemoteDesktopSession_GetSessionServicesReturnsNull) {
SetChromeRemoteDesktopSessionEnvVar(false);
ASSERT_EQ(client_->GetSessionServices(), nullptr);
}
#endif
TEST_F(ChromotingHostServicesClientTest,
CallGetSessionServicesTwice_SamePointerReturned) {
auto* session_services = client_->GetSessionServices();
ASSERT_NE(session_services, nullptr);
ASSERT_EQ(host_services_receivers_.size(), 1u);
WaitForSessionServicesBound();
ASSERT_EQ(session_services_receivers_.size(), 1u);
ASSERT_EQ(client_->GetSessionServices(), session_services);
ASSERT_EQ(host_services_receivers_.size(), 1u);
ASSERT_EQ(session_services_receivers_.size(), 1u);
}
TEST_F(ChromotingHostServicesClientTest,
ServerClosesSessionHostReceiver_DisconnectHandlerCalled) {
ASSERT_NE(client_->GetSessionServices(), nullptr);
WaitForSessionServicesBound();
ASSERT_EQ(session_services_receivers_.size(), 1u);
base::RunLoop remote_disconnect_run_loop;
client_->set_disconnect_handler(remote_disconnect_run_loop.QuitClosure());
host_services_receivers_.Clear();
remote_disconnect_run_loop.Run();
}
TEST_F(ChromotingHostServicesClientTest,
ServerClosesSessionServicesReceiverAndClientReconnects) {
ASSERT_NE(client_->GetSessionServices(), nullptr);
WaitForSessionServicesBound();
ASSERT_EQ(session_services_receivers_.size(), 1u);
base::RunLoop remote_disconnect_run_loop;
client_->set_disconnect_handler(remote_disconnect_run_loop.QuitClosure());
session_services_receivers_.clear();
remote_disconnect_run_loop.Run();
ASSERT_NE(client_->GetSessionServices(), nullptr);
WaitForSessionServicesBound();
ASSERT_EQ(session_services_receivers_.size(), 1u);
}
} // namespace remoting
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