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// Copyright 2013 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/it2me_desktop_environment.h"
#include <memory>
#include <string>
#include <utility>
#include "base/check.h"
#include "base/functional/bind.h"
#include "base/json/values_util.h"
#include "base/memory/ptr_util.h"
#include "base/memory/scoped_refptr.h"
#include "base/memory/weak_ptr.h"
#include "base/task/single_thread_task_runner.h"
#include "base/time/time.h"
#include "build/build_config.h"
#include "remoting/host/base/desktop_environment_options.h"
#include "remoting/host/basic_desktop_environment.h"
#include "remoting/host/client_session_control.h"
#include "remoting/host/desktop_environment.h"
#include "remoting/host/desktop_interaction_strategy.h"
#include "remoting/host/host_window.h"
#include "remoting/host/host_window_proxy.h"
#include "remoting/host/input_monitor/local_input_monitor.h"
#include "remoting/protocol/capability_names.h"
#if BUILDFLAG(IS_POSIX)
#include <sys/types.h>
#include <unistd.h>
#endif // BUILDFLAG(IS_POSIX)
#if BUILDFLAG(IS_CHROMEOS)
#include "base/feature_list.h"
#include "components/user_manager/user_manager.h"
#include "remoting/host/chromeos/features.h"
#include "remoting/host/curtain_mode_chromeos.h"
#endif // BUILDFLAG(IS_CHROMEOS)
namespace remoting {
It2MeDesktopEnvironment::~It2MeDesktopEnvironment() {
DCHECK(caller_task_runner()->BelongsToCurrentThread());
}
It2MeDesktopEnvironment::It2MeDesktopEnvironment(
scoped_refptr<base::SingleThreadTaskRunner> caller_task_runner,
scoped_refptr<base::SingleThreadTaskRunner> ui_task_runner,
std::unique_ptr<DesktopInteractionStrategy> interaction_strategy,
base::WeakPtr<ClientSessionControl> client_session_control,
const DesktopEnvironmentOptions& options)
: BasicDesktopEnvironment(caller_task_runner,
ui_task_runner,
std::move(interaction_strategy),
client_session_control,
options) {
DCHECK(caller_task_runner->BelongsToCurrentThread());
// Create the local input monitor.
local_input_monitor_ = this->interaction_strategy().CreateLocalInputMonitor();
local_input_monitor_->StartMonitoringForClientSession(client_session_control);
bool enable_user_interface = options.enable_user_interface();
bool enable_notifications = options.enable_notifications();
// The host UI should be created on the UI thread.
#if BUILDFLAG(IS_APPLE)
// Don't try to display any UI on top of the system's login screen as this
// is rejected by the Window Server on OS X 10.7.4, and prevents the
// capturer from working (http://crbug.com/140984).
// TODO(lambroslambrou): Use a better technique of detecting whether we're
// running in the LoginWindow context, and refactor this into a separate
// function to be used here and in CurtainMode::ActivateCurtain().
enable_user_interface = getuid() != 0;
#endif // BUILDFLAG(IS_APPLE)
// If a specific session duration limit is configured, the ContinueWindow
// mechanism should not require re-authentication for the ongoing session.
if (enable_user_interface && options.maximum_session_duration().is_zero()) {
// Create the continue window. The implication of this window is that the
// session length will be limited. If the user interface is disabled,
// then sessions will not have a maximum length enforced by the continue
// window timer.
continue_window_ = HostWindow::CreateContinueWindow();
continue_window_ = std::make_unique<HostWindowProxy>(
caller_task_runner, ui_task_runner, std::move(continue_window_));
continue_window_->Start(client_session_control);
}
// Create the disconnect window on Mac/Windows/Linux or a tray notification
// on ChromeOS. This has the effect of notifying the local user that
// someone has remotely connected to their machine and providing them with
// a disconnect button to terminate the connection.
if (enable_notifications) {
disconnect_window_ = HostWindow::CreateDisconnectWindow();
disconnect_window_ = std::make_unique<HostWindowProxy>(
caller_task_runner, ui_task_runner, std::move(disconnect_window_));
disconnect_window_->Start(client_session_control);
}
}
std::string It2MeDesktopEnvironment::GetCapabilities() const {
std::string capabilities = BasicDesktopEnvironment::GetCapabilities();
// TODO: joedow - Move MultiStream capability to a shared base
// class once all platforms and connection modes support it.
capabilities += " ";
capabilities += protocol::kMultiStreamCapability;
return capabilities;
}
It2MeDesktopEnvironmentFactory::It2MeDesktopEnvironmentFactory(
scoped_refptr<base::SingleThreadTaskRunner> caller_task_runner,
scoped_refptr<base::SingleThreadTaskRunner> ui_task_runner,
std::unique_ptr<DesktopInteractionStrategyFactory>
interaction_strategy_factory)
: BasicDesktopEnvironmentFactory(std::move(caller_task_runner),
std::move(ui_task_runner),
std::move(interaction_strategy_factory)) {}
It2MeDesktopEnvironmentFactory::~It2MeDesktopEnvironmentFactory() = default;
void It2MeDesktopEnvironmentFactory::Create(
base::WeakPtr<ClientSessionControl> client_session_control,
base::WeakPtr<ClientSessionEvents> client_session_events,
const DesktopEnvironmentOptions& options,
CreateCallback callback) {
DCHECK(caller_task_runner()->BelongsToCurrentThread());
auto create_with_interaction_strategy =
[](scoped_refptr<base::SingleThreadTaskRunner> caller_task_runner,
scoped_refptr<base::SingleThreadTaskRunner> ui_task_runner,
base::WeakPtr<ClientSessionControl> client_session_control,
const DesktopEnvironmentOptions& options,
std::unique_ptr<DesktopInteractionStrategy> interaction_strategy) {
return base::WrapUnique(new It2MeDesktopEnvironment(
std::move(caller_task_runner), std::move(ui_task_runner),
std::move(interaction_strategy), std::move(client_session_control),
options));
};
CreateInteractionStrategy(
options, base::BindOnce(create_with_interaction_strategy,
caller_task_runner(), ui_task_runner(),
std::move(client_session_control), options)
.Then(std::move(callback)));
}
} // namespace remoting
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