| // Copyright 2013 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef CRYPTO_NSS_CRYPTO_MODULE_DELEGATE_H_ |
| #define CRYPTO_NSS_CRYPTO_MODULE_DELEGATE_H_ |
| |
| #include <string> |
| |
| #include "base/callback_forward.h" |
| #include "crypto/scoped_nss_types.h" |
| |
| namespace crypto { |
| |
| // PK11_SetPasswordFunc is a global setting. An implementation of |
| // CryptoModuleBlockingPasswordDelegate should be passed using wincx() as the |
| // user data argument (|wincx|) to relevant NSS functions, which the global |
| // password handler will call to do the actual work. This delegate should only |
| // be used in NSS calls on worker threads due to the blocking nature. |
| class CryptoModuleBlockingPasswordDelegate { |
| public: |
| virtual ~CryptoModuleBlockingPasswordDelegate() {} |
| |
| // Return a value suitable for passing to the |wincx| argument of relevant NSS |
| // functions. This should be used instead of passing the object pointer |
| // directly to avoid accidentally casting a pointer to a subclass to void* and |
| // then casting back to a pointer of the base class |
| void* wincx() { return this; } |
| |
| // Requests a password to unlock |slot_name|. The interface is synchronous |
| // because NSS cannot issue an asynchronous request. |retry| is true if this |
| // is a request for the retry and we previously returned the wrong password. |
| // The implementation should set |*cancelled| to true if the user cancelled |
| // instead of entering a password, otherwise it should return the password the |
| // user entered. |
| virtual std::string RequestPassword(const std::string& slot_name, bool retry, |
| bool* cancelled) = 0; |
| }; |
| |
| // Extends CryptoModuleBlockingPasswordDelegate with the ability to return a |
| // slot in which to act. (Eg, which slot to store a generated key in.) |
| class NSSCryptoModuleDelegate : public CryptoModuleBlockingPasswordDelegate { |
| public: |
| ~NSSCryptoModuleDelegate() override {} |
| |
| // Get the slot to store the generated key. |
| virtual ScopedPK11Slot RequestSlot() = 0; |
| }; |
| |
| } // namespace crypto |
| |
| #endif // CRYPTO_NSS_CRYPTO_MODULE_DELEGATE_H_ |