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Side by Side Diff: chrome/browser/chromeos/login/quick_unlock/pin_storage_prefs.h

Issue 2809993004: cros: Implement cryptohome backend for pin.
Patch Set: Rebase, remove some extraneous LOG statements Created 3 years, 7 months ago
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1 // Copyright 2016 The Chromium Authors. All rights reserved. 1 // Copyright 2016 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 CHROME_BROWSER_CHROMEOS_LOGIN_QUICK_UNLOCK_PIN_STORAGE_H_ 5 #ifndef CHROME_BROWSER_CHROMEOS_LOGIN_QUICK_UNLOCK_PIN_STORAGE_PREFS_H_
6 #define CHROME_BROWSER_CHROMEOS_LOGIN_QUICK_UNLOCK_PIN_STORAGE_H_ 6 #define CHROME_BROWSER_CHROMEOS_LOGIN_QUICK_UNLOCK_PIN_STORAGE_PREFS_H_
7 7
8 #include <string> 8 #include <string>
9 9
10 #include "base/gtest_prod_util.h" 10 #include "base/macros.h"
11 #include "base/time/time.h"
12 11
13 class PrefRegistrySimple; 12 class PrefRegistrySimple;
14 class PrefService; 13 class Profile;
15 14
16 namespace chromeos { 15 namespace chromeos {
17 16
18 class PinStorageTestApi; 17 class PinStorageTestApi;
19 18
20 namespace quick_unlock { 19 namespace quick_unlock {
21 20
22 class QuickUnlockStorage; 21 class QuickUnlockStorage;
23 22
24 class PinStorage { 23 class PinStoragePrefs {
25 public: 24 public:
26 // TODO(sammiequon): Pull this value in from policy. See crbug.com/612271.
27 static const int kMaximumUnlockAttempts = 3; 25 static const int kMaximumUnlockAttempts = 3;
28 26
29 // Registers profile prefs. 27 // Registers profile prefs.
30 static void RegisterProfilePrefs(PrefRegistrySimple* registry); 28 static void RegisterProfilePrefs(PrefRegistrySimple* registry);
31 29
32 explicit PinStorage(PrefService* pref_service); 30 explicit PinStoragePrefs(Profile* profile);
33 ~PinStorage(); 31 ~PinStoragePrefs();
34
35 // Add a PIN unlock attempt count.
36 void AddUnlockAttempt();
37 // Reset the number of unlock attempts to 0.
38 void ResetUnlockAttemptCount();
39 // Returns the number of unlock attempts.
40 int unlock_attempt_count() const { return unlock_attempt_count_; }
41 32
42 // Returns true if a pin is set. 33 // Returns true if a pin is set.
43 bool IsPinSet() const; 34 bool IsPinSet() const;
44 // Sets the pin to the given value; IsPinSet will return true. 35
36 // Sets the pin to the given value.
45 void SetPin(const std::string& pin); 37 void SetPin(const std::string& pin);
38
46 // Removes the pin; IsPinSet will return false. 39 // Removes the pin; IsPinSet will return false.
47 void RemovePin(); 40 void RemovePin();
48 41
49 private:
50 friend class chromeos::PinStorageTestApi;
51 friend class QuickUnlockStorage;
52
53 // Is PIN entry currently available? 42 // Is PIN entry currently available?
54 bool IsPinAuthenticationAvailable() const; 43 bool IsPinAuthenticationAvailable() const;
55 44
56 // Tries to authenticate the given pin. This will consume an unlock attempt. 45 // Tries to authenticate the given pin. This will consume an unlock attempt.
57 // This always returns false if IsPinAuthenticationAvailable returns false. 46 // This always returns false if IsPinAuthenticationAvailable returns false.
47 //
48 // This is a no-op for cryptohome implementation (standard password flow works
49 // there).
58 bool TryAuthenticatePin(const std::string& pin); 50 bool TryAuthenticatePin(const std::string& pin);
59 51
52 // Implementation should return true if it needs strong auth support, ie, the
53 // user has to type their password every x hours.
54 bool NeedsStrongAuth() const;
55
56 // Add a PIN unlock attempt count.
57 void AddUnlockAttempt();
58
59 // Reset the unlock attempt count to 0. Not applicable to all implementations.
60 void ResetUnlockAttemptCount();
61
62 // Returns the number of unlock attempts.
63 int unlock_attempt_count() const { return unlock_attempt_count_; }
64
65 private:
66 friend class chromeos::PinStorageTestApi;
67 friend class QuickUnlockStorage;
68
60 // Return the stored salt/secret. This is fetched directly from pref_service_. 69 // Return the stored salt/secret. This is fetched directly from pref_service_.
61 std::string PinSalt() const; 70 std::string PinSalt() const;
62 std::string PinSecret() const; 71 std::string PinSecret() const;
63 72
64 PrefService* pref_service_; 73 Profile* profile_;
65 int unlock_attempt_count_ = 0; 74 int unlock_attempt_count_ = 0;
66 75
67 DISALLOW_COPY_AND_ASSIGN(PinStorage); 76 DISALLOW_COPY_AND_ASSIGN(PinStoragePrefs);
68 }; 77 };
69 78
70 } // namespace quick_unlock 79 } // namespace quick_unlock
71 } // namespace chromeos 80 } // namespace chromeos
72 81
73 #endif // CHROME_BROWSER_CHROMEOS_LOGIN_QUICK_UNLOCK_PIN_STORAGE_H_ 82 #endif // CHROME_BROWSER_CHROMEOS_LOGIN_QUICK_UNLOCK_PIN_STORAGE_PREFS_H_
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