89 lines
3.7 KiB
C++
89 lines
3.7 KiB
C++
/*
|
|
* Copyright (C) 2015 The Android Open Source Project
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#ifndef KEYSTORE_OPERATION_H_
|
|
#define KEYSTORE_OPERATION_H_
|
|
|
|
#include <hardware/hw_auth_token.h>
|
|
#include <hardware/keymaster2.h>
|
|
#include <binder/Binder.h>
|
|
#include <binder/IBinder.h>
|
|
#include <utils/LruCache.h>
|
|
#include <utils/StrongPointer.h>
|
|
#include <map>
|
|
#include <vector>
|
|
|
|
namespace android {
|
|
|
|
struct keymaster_key_characteristics_t_Delete {
|
|
void operator()(keymaster_key_characteristics_t* characteristics) const {
|
|
keymaster_free_characteristics(characteristics);
|
|
delete characteristics;
|
|
}
|
|
};
|
|
typedef std::unique_ptr<keymaster_key_characteristics_t, keymaster_key_characteristics_t_Delete>
|
|
Unique_keymaster_key_characteristics;
|
|
|
|
/**
|
|
* OperationMap handles the translation of keymaster_operation_handle_t's and
|
|
* keymaster2_device_t's to opaque binder tokens that can be used to reference
|
|
* that operation at a later time by applications. It also does LRU tracking
|
|
* for operation pruning and keeps a mapping of clients to operations to allow
|
|
* for graceful handling of application death.
|
|
*/
|
|
class OperationMap {
|
|
public:
|
|
OperationMap(IBinder::DeathRecipient* deathRecipient);
|
|
sp<IBinder> addOperation(keymaster_operation_handle_t handle, uint64_t keyid,
|
|
keymaster_purpose_t purpose, const keymaster2_device_t* dev,
|
|
sp<IBinder> appToken, keymaster_key_characteristics_t* characteristics,
|
|
bool pruneable);
|
|
bool getOperation(sp<IBinder> token, keymaster_operation_handle_t* outHandle,
|
|
uint64_t* outKeyid, keymaster_purpose_t* outPurpose,
|
|
const keymaster2_device_t** outDev,
|
|
const keymaster_key_characteristics_t** outCharacteristics);
|
|
bool removeOperation(sp<IBinder> token);
|
|
bool hasPruneableOperation() const;
|
|
size_t getOperationCount() const { return mMap.size(); }
|
|
size_t getPruneableOperationCount() const;
|
|
bool getOperationAuthToken(sp<IBinder> token, const hw_auth_token_t** outToken);
|
|
bool setOperationAuthToken(sp<IBinder> token, const hw_auth_token_t* authToken);
|
|
sp<IBinder> getOldestPruneableOperation();
|
|
std::vector<sp<IBinder>> getOperationsForToken(sp<IBinder> appToken);
|
|
|
|
private:
|
|
void updateLru(sp<IBinder> token);
|
|
void removeOperationTracking(sp<IBinder> token, sp<IBinder> appToken);
|
|
struct Operation {
|
|
Operation();
|
|
Operation(keymaster_operation_handle_t handle, uint64_t keyid, keymaster_purpose_t purpose,
|
|
const keymaster2_device_t* device,
|
|
keymaster_key_characteristics_t* characteristics, sp<IBinder> appToken);
|
|
keymaster_operation_handle_t handle;
|
|
uint64_t keyid;
|
|
keymaster_purpose_t purpose;
|
|
const keymaster2_device_t* device;
|
|
Unique_keymaster_key_characteristics characteristics;
|
|
sp<IBinder> appToken;
|
|
std::unique_ptr<hw_auth_token_t> authToken;
|
|
};
|
|
std::map<sp<IBinder>, struct Operation> mMap;
|
|
std::vector<sp<IBinder>> mLru;
|
|
std::map<sp<IBinder>, std::vector<sp<IBinder>>> mAppTokenMap;
|
|
IBinder::DeathRecipient* mDeathRecipient;
|
|
};
|
|
} // namespace android
|
|
#endif
|