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// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef REMOTING_HOST_CHROMOTING_HOST_SERVICES_CLIENT_H_
#define REMOTING_HOST_CHROMOTING_HOST_SERVICES_CLIENT_H_
#include <memory>
#include "base/functional/callback.h"
#include "base/sequence_checker.h"
#include "base/thread_annotations.h"
#include "mojo/public/cpp/bindings/remote.h"
#include "mojo/public/cpp/platform/named_platform_channel.h"
#include "remoting/host/chromoting_host_services_provider.h"
#include "remoting/host/mojom/chromoting_host_services.mojom.h"
namespace base {
class Environment;
} // namespace base
namespace remoting {
// Maintains connection to a ChromotingHostServices server, and provides the
// ChromotingHostServices interface. Note that each process should have only one
// ChromotingHostServicesClient instance. Making multiple connections to the
// ChromotingHostServices server is not supported.
class ChromotingHostServicesClient final
: public ChromotingHostServicesProvider {
public:
ChromotingHostServicesClient();
explicit ChromotingHostServicesClient(
const mojo::NamedPlatformChannel::ServerName& server_name);
ChromotingHostServicesClient(const ChromotingHostServicesClient&) = delete;
ChromotingHostServicesClient& operator=(const ChromotingHostServicesClient&) =
delete;
~ChromotingHostServicesClient() override;
// Configures the current process to allow it to communicate with the
// ChromotingHostServices server. Must be called once before using any
// instance of ChromotingHostServicesClient.
// Returns a boolean that indicates whether the initialization succeeded.
static bool Initialize();
// Gets the ChromotingSessionServices. Always null-check before using it, as
// nullptr will be returned if the connection could not be established.
// Note that when the session is not remoted, you will still get a callable
// interface, but all outgoing IPCs will be silently dropped, and any pending
// receivers/remotes/message pipes sent will be closed.
mojom::ChromotingSessionServices* GetSessionServices() const override;
void set_disconnect_handler(base::OnceClosure disconnect_handler) override;
private:
friend class ChromotingHostServicesClientTest;
using ConnectToServerCallback = base::RepeatingCallback<
mojo::PendingRemote<mojom::ChromotingHostServices>()>;
ChromotingHostServicesClient(std::unique_ptr<base::Environment> environment,
ConnectToServerCallback connect_to_server);
// Attempts to connect to the IPC server if the connection has not been
// established. Returns a boolean indicating whether there is a valid IPC
// connection to the chromoting host.
bool EnsureConnection();
bool EnsureSessionServicesBinding();
void OnDisconnected();
void OnSessionDisconnected();
SEQUENCE_CHECKER(sequence_checker_);
std::unique_ptr<base::Environment> environment_;
ConnectToServerCallback connect_to_server_;
mojo::Remote<mojom::ChromotingHostServices> remote_
GUARDED_BY_CONTEXT(sequence_checker_);
mojo::Remote<mojom::ChromotingSessionServices> session_services_remote_
GUARDED_BY_CONTEXT(sequence_checker_);
base::OnceClosure disconnect_handler_;
};
} // namespace remoting
#endif // REMOTING_HOST_CHROMOTING_HOST_SERVICES_CLIENT_H_
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