1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
|
// Copyright 2013 The Chromium Authors
// 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_
|
