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- // 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/memory/ref_counted.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 base::RefCountedThreadSafe<CryptoModuleBlockingPasswordDelegate> {
- public:
- // 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;
- protected:
- friend class base::RefCountedThreadSafe<CryptoModuleBlockingPasswordDelegate>;
- virtual ~CryptoModuleBlockingPasswordDelegate() {}
- };
- } // namespace crypto
- #endif // CRYPTO_NSS_CRYPTO_MODULE_DELEGATE_H_
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