1 /* 2 * Copyright (C) 2019 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 WIFI_IFACE_UTIL_H_ 18 #define WIFI_IFACE_UTIL_H_ 19 20 #include <wifi_system/interface_tool.h> 21 22 #include <android/hardware/wifi/1.0/IWifi.h> 23 24 namespace android { 25 namespace hardware { 26 namespace wifi { 27 namespace V1_3 { 28 namespace implementation { 29 namespace iface_util { 30 31 // Iface event handlers. 32 struct IfaceEventHandlers { 33 // Callback to be invoked when the iface is set down & up for MAC address 34 // change. 35 std::function<void(const std::string& iface_name)> on_state_toggle_off_on; 36 }; 37 38 /** 39 * Util class for common iface operations. 40 */ 41 class WifiIfaceUtil { 42 public: 43 WifiIfaceUtil(const std::weak_ptr<wifi_system::InterfaceTool> iface_tool); 44 virtual ~WifiIfaceUtil() = default; 45 46 virtual std::array<uint8_t, 6> getFactoryMacAddress( 47 const std::string& iface_name); 48 virtual bool setMacAddress(const std::string& iface_name, 49 const std::array<uint8_t, 6>& mac); 50 // Get or create a random MAC address. The MAC address returned from 51 // this method will remain the same throughout the lifetime of the HAL 52 // daemon. (So, changes on every reboot) 53 virtual std::array<uint8_t, 6> getOrCreateRandomMacAddress(); 54 55 // Register for any iface event callbacks for the provided interface. 56 virtual void registerIfaceEventHandlers(const std::string& iface_name, 57 IfaceEventHandlers handlers); 58 virtual void unregisterIfaceEventHandlers(const std::string& iface_name); 59 60 private: 61 std::array<uint8_t, 6> createRandomMacAddress(); 62 63 std::weak_ptr<wifi_system::InterfaceTool> iface_tool_; 64 std::unique_ptr<std::array<uint8_t, 6>> random_mac_address_; 65 std::map<std::string, IfaceEventHandlers> event_handlers_map_; 66 }; 67 68 } // namespace iface_util 69 } // namespace implementation 70 } // namespace V1_3 71 } // namespace wifi 72 } // namespace hardware 73 } // namespace android 74 75 #endif // WIFI_IFACE_UTIL_H_ 76