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90 lines
3.8 KiB
90 lines
3.8 KiB
/* |
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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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