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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef CHROMEOS_TPM_TOKEN_LOADER_H_ | 5 #ifndef CHROMEOS_TPM_TOKEN_LOADER_H_ |
6 #define CHROMEOS_TPM_TOKEN_LOADER_H_ | 6 #define CHROMEOS_TPM_TOKEN_LOADER_H_ |
7 | 7 |
8 #include <string> | 8 #include <string> |
9 | 9 |
10 #include "base/basictypes.h" | 10 #include "base/basictypes.h" |
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28 // should all be called from the UI thread. When the TPM token is loaded, | 28 // should all be called from the UI thread. When the TPM token is loaded, |
29 // or if the TPM should stay disabled for the session, the observers are | 29 // or if the TPM should stay disabled for the session, the observers are |
30 // notified using |OnTPMTokenReady|. | 30 // notified using |OnTPMTokenReady|. |
31 class CHROMEOS_EXPORT TPMTokenLoader : public LoginState::Observer { | 31 class CHROMEOS_EXPORT TPMTokenLoader : public LoginState::Observer { |
32 public: | 32 public: |
33 class Observer { | 33 class Observer { |
34 public: | 34 public: |
35 virtual ~Observer() {} | 35 virtual ~Observer() {} |
36 | 36 |
37 // Called when the TPM token initialization is done or the case where TPM | 37 // Called when the TPM token initialization is done or the case where TPM |
38 // should stay disabled is detected (e.g. on guest login). If TPM is | 38 // should stay disabled is detected (e.g. on guest login). |
39 // disabled, |tpm_user_pin|, |tpm_token_name| and |tpm_token_slot_id| will | 39 virtual void OnTPMTokenReady() = 0; |
40 // not be set. | |
41 virtual void OnTPMTokenReady(const std::string& tpm_user_pin, | |
42 const std::string& tpm_token_name, | |
43 int tpm_token_slot_id) = 0; | |
44 }; | 40 }; |
45 | 41 |
46 // Sets the global instance. Must be called before any calls to Get(). | 42 // Sets the global instance. Must be called before any calls to Get(). |
47 // The global instance will immediately start observing |LoginState|. | 43 // The global instance will immediately start observing |LoginState|. |
48 static void Initialize(); | 44 static void Initialize(); |
49 | 45 |
50 // Destroys the global instance. | 46 // Destroys the global instance. |
51 static void Shutdown(); | 47 static void Shutdown(); |
52 | 48 |
53 // Gets the global instance. Initialize() must be called before this. | 49 // Gets the global instance. Initialize() must be called before this. |
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67 // token loading. | 63 // token loading. |
68 void SetCryptoTaskRunner( | 64 void SetCryptoTaskRunner( |
69 const scoped_refptr<base::SequencedTaskRunner>& crypto_task_runner); | 65 const scoped_refptr<base::SequencedTaskRunner>& crypto_task_runner); |
70 | 66 |
71 void AddObserver(TPMTokenLoader::Observer* observer); | 67 void AddObserver(TPMTokenLoader::Observer* observer); |
72 void RemoveObserver(TPMTokenLoader::Observer* observer); | 68 void RemoveObserver(TPMTokenLoader::Observer* observer); |
73 | 69 |
74 // Checks if the TPM token in ready to be used. | 70 // Checks if the TPM token in ready to be used. |
75 bool IsTPMTokenReady() const; | 71 bool IsTPMTokenReady() const; |
76 | 72 |
| 73 std::string tpm_user_pin() const { return tpm_user_pin_; } |
| 74 |
77 private: | 75 private: |
78 TPMTokenLoader(); | 76 TPMTokenLoader(); |
79 virtual ~TPMTokenLoader(); | 77 virtual ~TPMTokenLoader(); |
80 | 78 |
81 // Starts tpm token initialization if the user is logged in and the crypto | 79 // Starts tpm token initialization if the user is logged in and the crypto |
82 // task runner is set. | 80 // task runner is set. |
83 void MaybeStartTokenInitialization(); | 81 void MaybeStartTokenInitialization(); |
84 | 82 |
85 // This is the cyclic chain of callbacks to initialize the TPM token. | 83 // This is the cyclic chain of callbacks to initialize the TPM token. |
86 void ContinueTokenInitialization(); | 84 void ContinueTokenInitialization(); |
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138 scoped_refptr<base::SequencedTaskRunner> crypto_task_runner_; | 136 scoped_refptr<base::SequencedTaskRunner> crypto_task_runner_; |
139 | 137 |
140 base::WeakPtrFactory<TPMTokenLoader> weak_factory_; | 138 base::WeakPtrFactory<TPMTokenLoader> weak_factory_; |
141 | 139 |
142 DISALLOW_COPY_AND_ASSIGN(TPMTokenLoader); | 140 DISALLOW_COPY_AND_ASSIGN(TPMTokenLoader); |
143 }; | 141 }; |
144 | 142 |
145 } // namespace chromeos | 143 } // namespace chromeos |
146 | 144 |
147 #endif // CHROMEOS_TPM_TOKEN_LOADER_H_ | 145 #endif // CHROMEOS_TPM_TOKEN_LOADER_H_ |
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