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      1 // Copyright 2014 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef CHROME_BROWSER_CHROMEOS_OWNERSHIP_OWNER_SETTINGS_SERVICE_H_
      6 #define CHROME_BROWSER_CHROMEOS_OWNERSHIP_OWNER_SETTINGS_SERVICE_H_
      7 
      8 #include <vector>
      9 
     10 #include "base/compiler_specific.h"
     11 #include "base/macros.h"
     12 #include "base/memory/weak_ptr.h"
     13 #include "base/threading/thread_checker.h"
     14 #include "chrome/browser/chromeos/settings/device_settings_service.h"
     15 #include "chrome/browser/chromeos/settings/owner_key_util.h"
     16 #include "chromeos/dbus/session_manager_client.h"
     17 #include "chromeos/tpm_token_loader.h"
     18 #include "components/keyed_service/core/keyed_service.h"
     19 #include "content/public/browser/notification_observer.h"
     20 #include "content/public/browser/notification_registrar.h"
     21 
     22 class Profile;
     23 
     24 namespace chromeos {
     25 
     26 // This class reloads owner key from profile NSS slots.
     27 //
     28 // TODO (ygorshenin@): move write path for device settings here
     29 // (crbug.com/230018).
     30 class OwnerSettingsService : public DeviceSettingsService::PrivateKeyDelegate,
     31                              public KeyedService,
     32                              public content::NotificationObserver,
     33                              public TPMTokenLoader::Observer,
     34                              public SessionManagerClient::Observer {
     35  public:
     36   virtual ~OwnerSettingsService();
     37 
     38   base::WeakPtr<OwnerSettingsService> as_weak_ptr() {
     39     return weak_factory_.GetWeakPtr();
     40   }
     41 
     42   // DeviceSettingsService::PrivateKeyDelegate implementation:
     43   virtual bool IsOwner() OVERRIDE;
     44   virtual void IsOwnerAsync(const IsOwnerCallback& callback) OVERRIDE;
     45   virtual bool AssembleAndSignPolicyAsync(
     46       scoped_ptr<enterprise_management::PolicyData> policy,
     47       const AssembleAndSignPolicyCallback& callback) OVERRIDE;
     48 
     49   // NotificationObserver implementation:
     50   virtual void Observe(int type,
     51                        const content::NotificationSource& source,
     52                        const content::NotificationDetails& details) OVERRIDE;
     53 
     54   // TPMTokenLoader::Observer:
     55   virtual void OnTPMTokenReady() OVERRIDE;
     56 
     57   // SessionManagerClient::Observer:
     58   virtual void OwnerKeySet(bool success) OVERRIDE;
     59 
     60   // Checks whether NSS slots with private key are mounted or
     61   // not. Responds via |callback|.
     62   static void IsPrivateKeyExistAsync(const IsOwnerCallback& callback);
     63 
     64   static void SetOwnerKeyUtilForTesting(
     65       const scoped_refptr<OwnerKeyUtil>& owner_key_util);
     66 
     67   static void SetDeviceSettingsServiceForTesting(
     68       DeviceSettingsService* device_settings_service);
     69 
     70  private:
     71   friend class OwnerSettingsServiceFactory;
     72 
     73   explicit OwnerSettingsService(Profile* profile);
     74 
     75   // Reloads private key from profile's NSS slots. Responds via call
     76   // to OnPrivateKeyLoaded().
     77   void ReloadPrivateKey();
     78 
     79   // Called when ReloadPrivateKey() completes it's work.
     80   void OnPrivateKeyLoaded(scoped_ptr<crypto::RSAPrivateKey> private_key);
     81 
     82   // Returns testing instance of OwnerKeyUtil when it's set, otherwise
     83   // returns |owner_key_util_|.
     84   scoped_refptr<OwnerKeyUtil> GetOwnerKeyUtil();
     85 
     86   // Returns testing instance of DeviceSettingsService when it's set,
     87   // otherwise returns pointer to a singleton instance, when it's
     88   // initialized.
     89   DeviceSettingsService* GetDeviceSettingsService();
     90 
     91   // Profile this service instance belongs to.
     92   Profile* profile_;
     93 
     94   scoped_refptr<PrivateKey> private_key_;
     95 
     96   scoped_refptr<OwnerKeyUtil> owner_key_util_;
     97 
     98   std::vector<IsOwnerCallback> pending_is_owner_callbacks_;
     99 
    100   // Whether profile still needs to be initialized.
    101   bool waiting_for_profile_creation_;
    102 
    103   // Whether TPM token still needs to be initialized.
    104   bool waiting_for_tpm_token_;
    105 
    106   content::NotificationRegistrar registrar_;
    107 
    108   base::ThreadChecker thread_checker_;
    109 
    110   base::WeakPtrFactory<OwnerSettingsService> weak_factory_;
    111 
    112   DISALLOW_COPY_AND_ASSIGN(OwnerSettingsService);
    113 };
    114 
    115 }  // namespace chromeos
    116 
    117 #endif  // CHROME_BROWSER_CHROMEOS_OWNERSHIP_OWNER_SETTINGS_SERVICE_H_
    118