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/*
* 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 <list>
#include <map>
#include <memory>
#include <mutex>
#include <optional>
#include <vector>
#include <binder/Binder.h>
#include <binder/IBinder.h>
#include <keymasterV4_1/Keymaster.h>
#include <utils/StrongPointer.h>
#include <keystore/keymaster_types.h>
#include <keystore/keystore_concurrency.h>
#include <keystore/keystore_hidl_support.h>
#include "operation_struct.h"
namespace keystore {
using ::android::IBinder;
using ::android::sp;
using keymaster::support::Keymaster;
/**
* OperationMap handles the translation of uint64_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:
explicit OperationMap(IBinder::DeathRecipient* deathRecipient);
sp<IBinder> addOperation(uint64_t handle, uint64_t keyid, KeyPurpose purpose,
const sp<Keymaster>& dev, const sp<IBinder>& appToken,
KeyCharacteristics&& characteristics,
const hidl_vec<KeyParameter>& params, bool pruneable);
std::shared_ptr<Operation> getOperation(const sp<IBinder>& token);
std::shared_ptr<Operation> removeOperation(const sp<IBinder>& token, bool wasSuccessful,
int32_t responseCode);
size_t getOperationCount() const { return mMap.size(); }
sp<IBinder> getOldestPruneableOperation();
std::vector<sp<IBinder>> getOperationsForToken(const sp<IBinder>& appToken);
private:
void updateLru(const sp<IBinder>& token);
void removeOperationTracking(const sp<IBinder>& token, const sp<IBinder>& appToken);
std::map<sp<IBinder>, std::shared_ptr<Operation>> mMap;
std::list<sp<IBinder>> mLru;
std::map<sp<IBinder>, std::vector<sp<IBinder>>> mAppTokenMap;
IBinder::DeathRecipient* mDeathRecipient;
};
} // namespace keystore
#endif
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