[EasyUnlock] Force user to enter their password after 20 hours.

components/proximity_auth/proximity_auth_system.h

 // 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.
 
 #ifndef COMPONENTS_PROXIMITY_AUTH_PROXIMITY_AUTH_SYSTEM_H
 #define COMPONENTS_PROXIMITY_AUTH_PROXIMITY_AUTH_SYSTEM_H
 
 #include <memory>
 #include <vector>
 
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
+#include "base/time/clock.h"
 #include "components/cryptauth/remote_device.h"
 #include "components/proximity_auth/remote_device_life_cycle.h"
 #include "components/proximity_auth/screenlock_bridge.h"
 #include "components/signin/core/account_id/account_id.h"
 
 namespace proximity_auth {
 
 class ProximityAuthClient;
+class ProximityAuthPrefManager;
 class RemoteDeviceLifeCycle;
 class UnlockManager;
 
 // This is the main entry point to start Proximity Auth, the underlying system
 // for the Smart Lock feature. Given a list of remote devices (i.e. a
 // phone) for each registered user, the system will handle the connection,
 // authentication, and messenging protocol when the screen is locked and the
 // registered user is focused.
 class ProximityAuthSystem : public RemoteDeviceLifeCycle::Observer,
                             public ScreenlockBridge::Observer {
@@ skipping 31 matching lines @@
   void OnSuspend();
 
   // Called when the system wakes up from a suspended state.
   void OnSuspendDone();
 
  protected:
   // Constructor which allows passing in a custom |unlock_manager_|.
   // Exposed for testing.
   ProximityAuthSystem(ScreenlockType screenlock_type,
                       ProximityAuthClient* proximity_auth_client,
-                      std::unique_ptr<UnlockManager> unlock_manager);
+                      std::unique_ptr<UnlockManager> unlock_manager,
+                      std::unique_ptr<base::Clock> clock,
+                      std::unique_ptr<ProximityAuthPrefManager> pref_manager);
 
   // Creates the RemoteDeviceLifeCycle for |remote_device|.
   // Exposed for testing.
   virtual std::unique_ptr<RemoteDeviceLifeCycle> CreateRemoteDeviceLifeCycle(
       const cryptauth::RemoteDevice& remote_device);
 
   // RemoteDeviceLifeCycle::Observer:
   void OnLifeCycleStateChanged(RemoteDeviceLifeCycle::State old_state,
                                RemoteDeviceLifeCycle::State new_state) override;
 
   // ScreenlockBridge::Observer:
   void OnScreenDidLock(
       ScreenlockBridge::LockHandler::ScreenType screen_type) override;
   void OnScreenDidUnlock(
       ScreenlockBridge::LockHandler::ScreenType screen_type) override;
   void OnFocusedUserChanged(const AccountId& account_id) override;
 
  private:
   // Resumes |remote_device_life_cycle_| after device wakes up and waits a
   // timeout.
   void ResumeAfterWakeUpTimeout();
 
+  // Returns true if the user should be forced to use a password to authenticate
+  // rather than EasyUnlock.
+  bool ShouldForcePassword();
+
   // Lists of remote devices, keyed by user account id.
   std::map<AccountId, cryptauth::RemoteDeviceList> remote_devices_map_;
 
   // Delegate for Chrome dependent functionality.
   ProximityAuthClient* proximity_auth_client_;
 
   // Responsible for the life cycle of connecting and authenticating to
   // the RemoteDevice of the currently focused user.
   std::unique_ptr<RemoteDeviceLifeCycle> remote_device_life_cycle_;
 
   // Handles the interaction with the lock screen UI.
   std::unique_ptr<UnlockManager> unlock_manager_;
 
+  // Used to get the current timestamp.
+  std::unique_ptr<base::Clock> clock_;
+
+  // Fetches EasyUnlock preferences.
+  std::unique_ptr<ProximityAuthPrefManager> pref_manager_;
+
   // True if the system is suspended.
   bool suspended_;
 
   // True if the system is started_.
   bool started_;
 
   base::WeakPtrFactory<ProximityAuthSystem> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ProximityAuthSystem);
 };
 
 }  // namespace proximity_auth
 
 #endif  // COMPONENTS_PROXIMITY_AUTH_PROXIMITY_AUTH_SYSTEM_H