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// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROMEOS_ASH_COMPONENTS_MULTIDEVICE_SECURE_MESSAGE_DELEGATE_IMPL_H_
#define CHROMEOS_ASH_COMPONENTS_MULTIDEVICE_SECURE_MESSAGE_DELEGATE_IMPL_H_
#include "base/memory/raw_ptr.h"
#include "base/memory/weak_ptr.h"
#include "chromeos/ash/components/multidevice/secure_message_delegate.h"
namespace ash {
class EasyUnlockClient;
namespace multidevice {
// Concrete SecureMessageDelegate implementation.
// Note: Callbacks are guaranteed to *not* be invoked after
// SecureMessageDelegateImpl is destroyed.
class SecureMessageDelegateImpl : public SecureMessageDelegate {
public:
class Factory {
public:
static std::unique_ptr<SecureMessageDelegate> Create();
static void SetFactoryForTesting(Factory* test_factory);
protected:
virtual ~Factory();
virtual std::unique_ptr<SecureMessageDelegate> CreateInstance() = 0;
private:
static Factory* test_factory_instance_;
};
SecureMessageDelegateImpl(const SecureMessageDelegateImpl&) = delete;
SecureMessageDelegateImpl& operator=(const SecureMessageDelegateImpl&) =
delete;
~SecureMessageDelegateImpl() override;
// SecureMessageDelegate:
void GenerateKeyPair(GenerateKeyPairCallback callback) override;
void DeriveKey(const std::string& private_key,
const std::string& public_key,
DeriveKeyCallback callback) override;
void CreateSecureMessage(const std::string& payload,
const std::string& key,
const CreateOptions& create_options,
CreateSecureMessageCallback callback) override;
void UnwrapSecureMessage(const std::string& serialized_message,
const std::string& key,
const UnwrapOptions& unwrap_options,
UnwrapSecureMessageCallback callback) override;
private:
SecureMessageDelegateImpl();
// Processes results returned from the dbus client, if necessary, and invokes
// the SecureMessageDelegate callbacks with the processed results. Note: When
// invoking dbus client methods, we bind these functions to a weak pointer to
// ensure that these functions are not called after the
// SecureMessageDelegateImpl object is destroyed.
void OnGenerateKeyPairResult(GenerateKeyPairCallback callback,
const std::string& private_key,
const std::string& public_key);
void OnDeriveKeyResult(DeriveKeyCallback callback,
const std::string& derived_key);
void OnCreateSecureMessageResult(CreateSecureMessageCallback callback,
const std::string& secure_message);
void OnUnwrapSecureMessageResult(UnwrapSecureMessageCallback callback,
const std::string& unwrap_result);
// Not owned by this instance.
raw_ptr<EasyUnlockClient> dbus_client_;
base::WeakPtrFactory<SecureMessageDelegateImpl> weak_ptr_factory_{this};
};
} // namespace multidevice
} // namespace ash
#endif // CHROMEOS_ASH_COMPONENTS_MULTIDEVICE_SECURE_MESSAGE_DELEGATE_IMPL_H_
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