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