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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/proximity_auth/proximity_auth_system.h"
#include "base/thread_task_runner_handle.h"
#include "base/time/default_tick_clock.h"
#include "components/proximity_auth/logging/logging.h"
#include "components/proximity_auth/proximity_auth_client.h"
#include "components/proximity_auth/proximity_monitor_impl.h"
#include "components/proximity_auth/remote_device_life_cycle_impl.h"
#include "components/proximity_auth/unlock_manager.h"
namespace proximity_auth {
namespace {
// The time to wait after the device wakes up before beginning to connect to the
// remote device.
const int kWakeUpTimeoutSeconds = 2;
} // namespace
ProximityAuthSystem::ProximityAuthSystem(
RemoteDevice remote_device,
ProximityAuthClient* proximity_auth_client)
: remote_device_(remote_device),
proximity_auth_client_(proximity_auth_client),
unlock_manager_(new UnlockManager(
UnlockManager::ScreenlockType::SESSION_LOCK,
make_scoped_ptr<ProximityMonitor>(new ProximityMonitorImpl(
remote_device,
make_scoped_ptr(new base::DefaultTickClock()))),
proximity_auth_client)),
suspended_(false),
weak_ptr_factory_(this) {}
ProximityAuthSystem::~ProximityAuthSystem() {
ScreenlockBridge::Get()->RemoveObserver(this);
unlock_manager_->SetRemoteDeviceLifeCycle(nullptr);
}
void ProximityAuthSystem::Start() {
ScreenlockBridge::Get()->AddObserver(this);
if (remote_device_.user_id == ScreenlockBridge::Get()->focused_user_id())
OnFocusedUserChanged(ScreenlockBridge::Get()->focused_user_id());
}
void ProximityAuthSystem::OnAuthAttempted(const std::string& user_id) {
// TODO(tengs): There is no reason to pass the |user_id| argument anymore.
unlock_manager_->OnAuthAttempted(ScreenlockBridge::LockHandler::USER_CLICK);
}
void ProximityAuthSystem::OnSuspend() {
PA_LOG(INFO) << "Preparing for device suspension.";
DCHECK(!suspended_);
suspended_ = true;
remote_device_life_cycle_.reset();
}
void ProximityAuthSystem::OnSuspendDone() {
PA_LOG(INFO) << "Device resumed from suspension.";
DCHECK(suspended_);
// TODO(tengs): On ChromeOS, the system's Bluetooth adapter is invalidated
// when the system suspends. However, Chrome does not receive this
// notification until a second or so after the system wakes up. That means
// using the adapter during this time will be problematic, so we wait instead.
// See crbug.com/537057.
proximity_auth_client_->UpdateScreenlockState(
ScreenlockState::BLUETOOTH_CONNECTING);
base::ThreadTaskRunnerHandle::Get()->PostDelayedTask(
FROM_HERE, base::Bind(&ProximityAuthSystem::ResumeAfterWakeUpTimeout,
weak_ptr_factory_.GetWeakPtr()),
base::TimeDelta::FromSeconds(kWakeUpTimeoutSeconds));
}
void ProximityAuthSystem::ResumeAfterWakeUpTimeout() {
PA_LOG(INFO) << "Resume after suspend";
suspended_ = false;
OnFocusedUserChanged(ScreenlockBridge::Get()->focused_user_id());
}
void ProximityAuthSystem::OnLifeCycleStateChanged(
RemoteDeviceLifeCycle::State old_state,
RemoteDeviceLifeCycle::State new_state) {
unlock_manager_->OnLifeCycleStateChanged();
}
void ProximityAuthSystem::OnScreenDidLock(
ScreenlockBridge::LockHandler::ScreenType screen_type) {
OnFocusedUserChanged(ScreenlockBridge::Get()->focused_user_id());
}
void ProximityAuthSystem::OnScreenDidUnlock(
ScreenlockBridge::LockHandler::ScreenType screen_type) {
unlock_manager_->SetRemoteDeviceLifeCycle(nullptr);
remote_device_life_cycle_.reset();
}
void ProximityAuthSystem::OnFocusedUserChanged(const std::string& user_id) {
if (!user_id.empty() && remote_device_.user_id != user_id) {
PA_LOG(INFO) << "Different user focused, destroying RemoteDeviceLifeCycle.";
unlock_manager_->SetRemoteDeviceLifeCycle(nullptr);
remote_device_life_cycle_.reset();
} else if (!remote_device_life_cycle_ && !suspended_) {
PA_LOG(INFO) << "Creating RemoteDeviceLifeCycle for focused user.";
remote_device_life_cycle_.reset(
new RemoteDeviceLifeCycleImpl(remote_device_, proximity_auth_client_));
unlock_manager_->SetRemoteDeviceLifeCycle(remote_device_life_cycle_.get());
remote_device_life_cycle_->AddObserver(this);
remote_device_life_cycle_->Start();
}
}
} // proximity_auth
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