1 // 2 // Copyright (C) 2015 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_CONNECTION_MANAGER_INTERFACE_H_ 18 #define UPDATE_ENGINE_CONNECTION_MANAGER_INTERFACE_H_ 19 20 #include <memory> 21 22 #include <base/macros.h> 23 24 #include "update_engine/connection_utils.h" 25 26 namespace chromeos_update_engine { 27 28 class SystemState; 29 30 // This class exposes a generic interface to the connection manager 31 // (e.g FlimFlam, Shill, etc.) to consolidate all connection-related 32 // logic in update_engine. 33 class ConnectionManagerInterface { 34 public: 35 virtual ~ConnectionManagerInterface() = default; 36 37 // Populates |out_type| with the type of the network connection 38 // that we are currently connected and |out_tethering| with the estimate of 39 // whether that network is being tethered. 40 virtual bool GetConnectionProperties(ConnectionType* out_type, 41 ConnectionTethering* out_tethering) = 0; 42 43 // Returns true if we're allowed to update the system when we're 44 // connected to the internet through the given network connection type and the 45 // given tethering state. 46 virtual bool IsUpdateAllowedOver(ConnectionType type, 47 ConnectionTethering tethering) const = 0; 48 49 protected: 50 ConnectionManagerInterface() = default; 51 52 private: 53 DISALLOW_COPY_AND_ASSIGN(ConnectionManagerInterface); 54 }; 55 56 namespace connection_manager { 57 // Factory function which creates a ConnectionManager. 58 std::unique_ptr<ConnectionManagerInterface> CreateConnectionManager( 59 SystemState* system_state); 60 } 61 62 } // namespace chromeos_update_engine 63 64 #endif // UPDATE_ENGINE_CONNECTION_MANAGER_INTERFACE_H_ 65