1 // 2 // Copyright (C) 2014 The Android Open Source Project 3 // 4 // Licensed under the Apache License, Version 2.0 (the "License"); 5 // you may not use this file except in compliance with the License. 6 // You may obtain a copy of the License at 7 // 8 // http://www.apache.org/licenses/LICENSE-2.0 9 // 10 // Unless required by applicable law or agreed to in writing, software 11 // distributed under the License is distributed on an "AS IS" BASIS, 12 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 // See the License for the specific language governing permissions and 14 // limitations under the License. 15 // 16 17 #ifndef UPDATE_ENGINE_UPDATE_MANAGER_REAL_RANDOM_PROVIDER_H_ 18 #define UPDATE_ENGINE_UPDATE_MANAGER_REAL_RANDOM_PROVIDER_H_ 19 20 #include <memory> 21 22 #include "update_engine/update_manager/random_provider.h" 23 24 namespace chromeos_update_manager { 25 26 // RandomProvider implementation class. 27 class RealRandomProvider : public RandomProvider { 28 public: RealRandomProvider()29 RealRandomProvider() {} 30 var_seed()31 Variable<uint64_t>* var_seed() override { return var_seed_.get(); } 32 33 // Initializes the provider and returns whether it succeeded. 34 bool Init(); 35 36 private: 37 // The seed() scoped variable. 38 std::unique_ptr<Variable<uint64_t>> var_seed_; 39 40 DISALLOW_COPY_AND_ASSIGN(RealRandomProvider); 41 }; 42 43 } // namespace chromeos_update_manager 44 45 #endif // UPDATE_ENGINE_UPDATE_MANAGER_REAL_RANDOM_PROVIDER_H_ 46