d3ed3a2079
This reverts commit 76f21b2676.
Reason for revert: b/36637075
Bug: 36637075
Change-Id: Ica737cf96d14086aae7918f8bf2f86a36555d03b
90 lines
3.8 KiB
C++
90 lines
3.8 KiB
C++
/*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef KEYSTORE_OPERATION_H_
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#define KEYSTORE_OPERATION_H_
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#include <binder/Binder.h>
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#include <binder/IBinder.h>
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#include <keystore/keymaster_tags.h>
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#include <map>
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#include <utils/LruCache.h>
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#include <utils/StrongPointer.h>
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#include <vector>
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namespace keystore {
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using ::android::IBinder;
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using ::android::sp;
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/**
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* OperationMap handles the translation of uint64_t's and keymaster2_device_t's to opaque binder
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* tokens that can be used to reference that operation at a later time by applications. It also does
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* LRU tracking for operation pruning and keeps a mapping of clients to operations to allow for
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* graceful handling of application death.
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*/
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class OperationMap {
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typedef ::android::sp<::android::hardware::keymaster::V3_0::IKeymasterDevice> km_device_t;
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public:
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explicit OperationMap(IBinder::DeathRecipient* deathRecipient);
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android::sp<android::IBinder> addOperation(uint64_t handle, uint64_t keyid, KeyPurpose purpose,
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const km_device_t& dev,
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const android::sp<android::IBinder>& appToken,
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KeyCharacteristics&& characteristics,
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bool pruneable);
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bool getOperation(const android::sp<android::IBinder>& token, uint64_t* outHandle,
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uint64_t* outKeyid, KeyPurpose* outPurpose, km_device_t* outDev,
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const KeyCharacteristics** outCharacteristics);
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bool removeOperation(const android::sp<android::IBinder>& token);
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bool hasPruneableOperation() const;
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size_t getOperationCount() const { return mMap.size(); }
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size_t getPruneableOperationCount() const;
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bool getOperationAuthToken(const android::sp<android::IBinder>& token,
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const HardwareAuthToken** outToken);
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bool setOperationAuthToken(const android::sp<android::IBinder>& token,
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const HardwareAuthToken* authToken);
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android::sp<android::IBinder> getOldestPruneableOperation();
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std::vector<android::sp<android::IBinder>>
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getOperationsForToken(const android::sp<android::IBinder>& appToken);
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private:
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void updateLru(const android::sp<android::IBinder>& token);
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void removeOperationTracking(const android::sp<android::IBinder>& token,
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const android::sp<android::IBinder>& appToken);
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struct Operation {
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Operation();
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Operation(uint64_t handle, uint64_t keyid, KeyPurpose purpose, const km_device_t& device,
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KeyCharacteristics&& characteristics, android::sp<android::IBinder> appToken);
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uint64_t handle;
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uint64_t keyid;
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KeyPurpose purpose;
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km_device_t device;
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KeyCharacteristics characteristics;
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android::sp<android::IBinder> appToken;
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std::unique_ptr<HardwareAuthToken> authToken;
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};
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std::map<android::sp<android::IBinder>, Operation> mMap;
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std::vector<android::sp<android::IBinder>> mLru;
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std::map<android::sp<android::IBinder>, std::vector<android::sp<android::IBinder>>>
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mAppTokenMap;
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android::IBinder::DeathRecipient* mDeathRecipient;
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};
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} // namespace keystore
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#endif
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