src/chrome/browser/chromeos/login/screens/eula_screen.h

   1 // Copyright (c) 2012 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_LOGIN_SCREENS_EULA_SCREEN_H_
   6 #define CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_EULA_SCREEN_H_
   7
   8 #include <string>
   9
  10 #include "base/compiler_specific.h"
  11 #include "chrome/browser/chromeos/login/screens/base_screen.h"
  12 #include "chrome/browser/chromeos/login/screens/eula_screen_actor.h"
  13 #include "chromeos/tpm_password_fetcher.h"
  14 #include "url/gurl.h"
  15
  16 namespace chromeos {
  17
  18 // Representation independent class that controls OOBE screen showing EULA
  19 // to users.
  20 class EulaScreen : public BaseScreen,
  21                    public EulaScreenActor::Delegate,
  22                    public TpmPasswordFetcherDelegate {
  23  public:
  24   class Delegate {
  25    public:
  26     virtual ~Delegate() {}
  27
  28     // Whether usage statistics reporting is enabled on EULA screen.
  29     virtual void SetUsageStatisticsReporting(bool val) = 0;
  30     virtual bool GetUsageStatisticsReporting() const = 0;
  31   };
  32
  33   EulaScreen(BaseScreenDelegate* base_screen_delegate,
  34              Delegate* delegate,
  35              EulaScreenActor* actor);
  36   virtual ~EulaScreen();
  37
  38   // BaseScreen implementation:
  39   virtual void PrepareToShow() override;
  40   virtual void Show() override;
  41   virtual void Hide() override;
  42   virtual std::string GetName() const override;
  43
  44   // EulaScreenActor::Delegate implementation:
  45   virtual GURL GetOemEulaUrl() const override;
  46   virtual void OnExit(bool accepted, bool usage_stats_enabled) override;
  47   virtual void InitiatePasswordFetch() override;
  48   virtual bool IsUsageStatsEnabled() const override;
  49   virtual void OnActorDestroyed(EulaScreenActor* actor) override;
  50
  51   // TpmPasswordFetcherDelegate implementation:
  52   virtual void OnPasswordFetched(const std::string& tpm_password) override;
  53
  54  private:
  55   // URL of the OEM EULA page (on disk).
  56   GURL oem_eula_page_;
  57
  58   // TPM password local storage. By convention, we clear the password
  59   // from TPM as soon as we read it. We store it here locally until
  60   // EULA screen is closed.
  61   // TODO(glotov): Sanitize memory used to store password when
  62   // it's destroyed.
  63   std::string tpm_password_;
  64
  65   Delegate* delegate_;
  66
  67   EulaScreenActor* actor_;
  68
  69   TpmPasswordFetcher password_fetcher_;
  70
  71   DISALLOW_COPY_AND_ASSIGN(EulaScreen);
  72 };
  73
  74 }  // namespace chromeos
  75
  76 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_EULA_SCREEN_H_