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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/eula_screen_actor.h"
12 #include "chrome/browser/chromeos/login/screens/wizard_screen.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 WizardScreen,
21                    public EulaScreenActor::Delegate,
22                    public TpmPasswordFetcherDelegate {
23  public:
24   EulaScreen(ScreenObserver* observer, EulaScreenActor* actor);
25   virtual ~EulaScreen();
26 
27   // WizardScreen implementation:
28   virtual void PrepareToShow() OVERRIDE;
29   virtual void Show() OVERRIDE;
30   virtual void Hide() OVERRIDE;
31   virtual std::string GetName() const OVERRIDE;
32 
33   // EulaScreenActor::Delegate implementation:
34   virtual GURL GetOemEulaUrl() const OVERRIDE;
35   virtual void OnExit(bool accepted, bool usage_stats_enabled) OVERRIDE;
36   virtual void InitiatePasswordFetch() OVERRIDE;
37   virtual bool IsUsageStatsEnabled() const OVERRIDE;
38   virtual void OnActorDestroyed(EulaScreenActor* actor) OVERRIDE;
39 
40   // TpmPasswordFetcherDelegate implementation:
41   virtual void OnPasswordFetched(const std::string& tpm_password) OVERRIDE;
42 
43  private:
44   // URL of the OEM EULA page (on disk).
45   GURL oem_eula_page_;
46 
47   // TPM password local storage. By convention, we clear the password
48   // from TPM as soon as we read it. We store it here locally until
49   // EULA screen is closed.
50   // TODO(glotov): Sanitize memory used to store password when
51   // it's destroyed.
52   std::string tpm_password_;
53 
54   EulaScreenActor* actor_;
55 
56   TpmPasswordFetcher password_fetcher_;
57 
58   DISALLOW_COPY_AND_ASSIGN(EulaScreen);
59 };
60 
61 }  // namespace chromeos
62 
63 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_EULA_SCREEN_H_
64