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_model.h"
  13 #include "chromeos/tpm/tpm_password_fetcher.h"
  14 #include "components/login/screens/screen_context.h"
  15 #include "url/gurl.h"
  16
  17 namespace chromeos {
  18
  19 // Representation independent class that controls OOBE screen showing EULA
  20 // to users.
  21 class EulaScreen : public EulaModel, public TpmPasswordFetcherDelegate {
  22  public:
  23   class Delegate {
  24    public:
  25     virtual ~Delegate() {}
  26
  27     // Whether usage statistics reporting is enabled on EULA screen.
  28     virtual void SetUsageStatisticsReporting(bool val) = 0;
  29     virtual bool GetUsageStatisticsReporting() const = 0;
  30   };
  31
  32   EulaScreen(BaseScreenDelegate* base_screen_delegate,
  33              Delegate* delegate,
  34              EulaView* view);
  35   ~EulaScreen() override;
  36
  37   // EulaModel implementation:
  38   void PrepareToShow() override;
  39   void Show() override;
  40   void Hide() override;
  41   GURL GetOemEulaUrl() const override;
  42   void InitiatePasswordFetch() override;
  43   bool IsUsageStatsEnabled() const override;
  44   void OnViewDestroyed(EulaView* view) override;
  45   void OnUserAction(const std::string& action_id) override;
  46   void OnContextKeyUpdated(const ::login::ScreenContext::KeyType& key) override;
  47
  48   // TpmPasswordFetcherDelegate implementation:
  49   void OnPasswordFetched(const std::string& tpm_password) override;
  50
  51  private:
  52   // URL of the OEM EULA page (on disk).
  53   GURL oem_eula_page_;
  54
  55   // TPM password local storage. By convention, we clear the password
  56   // from TPM as soon as we read it. We store it here locally until
  57   // EULA screen is closed.
  58   // TODO(glotov): Sanitize memory used to store password when
  59   // it's destroyed.
  60   std::string tpm_password_;
  61
  62   Delegate* delegate_;
  63
  64   EulaView* view_;
  65
  66   TpmPasswordFetcher password_fetcher_;
  67
  68   DISALLOW_COPY_AND_ASSIGN(EulaScreen);
  69 };
  70
  71 }  // namespace chromeos
  72
  73 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_EULA_SCREEN_H_