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1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 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 CRYPTO_NSS_CRYPTO_MODULE_DELEGATE_H_ | 5 #ifndef CRYPTO_NSS_CRYPTO_MODULE_DELEGATE_H_ |
6 #define CRYPTO_NSS_CRYPTO_MODULE_DELEGATE_H_ | 6 #define CRYPTO_NSS_CRYPTO_MODULE_DELEGATE_H_ |
7 | 7 |
8 #include <string> | 8 #include <string> |
9 | 9 |
| 10 #include "base/memory/ref_counted.h" |
| 11 |
10 namespace crypto { | 12 namespace crypto { |
11 | 13 |
12 // PK11_SetPasswordFunc is a global setting. An implementation of | 14 // PK11_SetPasswordFunc is a global setting. An implementation of |
13 // CryptoModuleBlockingPasswordDelegate should be passed using wincx() as the | 15 // CryptoModuleBlockingPasswordDelegate should be passed using wincx() as the |
14 // user data argument (|wincx|) to relevant NSS functions, which the global | 16 // user data argument (|wincx|) to relevant NSS functions, which the global |
15 // password handler will call to do the actual work. This delegate should only | 17 // password handler will call to do the actual work. This delegate should only |
16 // be used in NSS calls on worker threads due to the blocking nature. | 18 // be used in NSS calls on worker threads due to the blocking nature. |
17 class CryptoModuleBlockingPasswordDelegate { | 19 class CryptoModuleBlockingPasswordDelegate |
| 20 : public base::RefCountedThreadSafe<CryptoModuleBlockingPasswordDelegate> { |
18 public: | 21 public: |
19 virtual ~CryptoModuleBlockingPasswordDelegate() {} | |
20 | 22 |
21 // Return a value suitable for passing to the |wincx| argument of relevant NSS | 23 // Return a value suitable for passing to the |wincx| argument of relevant NSS |
22 // functions. This should be used instead of passing the object pointer | 24 // functions. This should be used instead of passing the object pointer |
23 // directly to avoid accidentally casting a pointer to a subclass to void* and | 25 // directly to avoid accidentally casting a pointer to a subclass to void* and |
24 // then casting back to a pointer of the base class | 26 // then casting back to a pointer of the base class |
25 void* wincx() { return this; } | 27 void* wincx() { return this; } |
26 | 28 |
27 // Requests a password to unlock |slot_name|. The interface is synchronous | 29 // Requests a password to unlock |slot_name|. The interface is synchronous |
28 // because NSS cannot issue an asynchronous request. |retry| is true if this | 30 // because NSS cannot issue an asynchronous request. |retry| is true if this |
29 // is a request for the retry and we previously returned the wrong password. | 31 // is a request for the retry and we previously returned the wrong password. |
30 // The implementation should set |*cancelled| to true if the user cancelled | 32 // The implementation should set |*cancelled| to true if the user cancelled |
31 // instead of entering a password, otherwise it should return the password the | 33 // instead of entering a password, otherwise it should return the password the |
32 // user entered. | 34 // user entered. |
33 virtual std::string RequestPassword(const std::string& slot_name, bool retry, | 35 virtual std::string RequestPassword(const std::string& slot_name, bool retry, |
34 bool* cancelled) = 0; | 36 bool* cancelled) = 0; |
| 37 |
| 38 protected: |
| 39 friend class base::RefCountedThreadSafe<CryptoModuleBlockingPasswordDelegate>; |
| 40 |
| 41 virtual ~CryptoModuleBlockingPasswordDelegate() {} |
35 }; | 42 }; |
36 | 43 |
37 } // namespace crypto | 44 } // namespace crypto |
38 | 45 |
39 #endif // CRYPTO_NSS_CRYPTO_MODULE_DELEGATE_H_ | 46 #endif // CRYPTO_NSS_CRYPTO_MODULE_DELEGATE_H_ |
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