1 /* 2 * Copyright 2018, 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 #pragma once 18 19 #include "interface_state.h" 20 21 #include <string> 22 #include <unordered_map> 23 24 #include <netinet/in.h> 25 #include <stdint.h> 26 27 class AddressAssigner { 28 public: 29 AddressAssigner(const char* interfacePrefix, 30 in_addr_t baseAddress, 31 uint32_t maskLength); 32 33 void onInterfaceState(unsigned int index, 34 const char* name, 35 InterfaceState state); 36 37 private: 38 void assignAddress(const char* interfaceName); 39 void freeAddress(const char* interfaceName); 40 41 void setIpAddress(const char* interfaceName, in_addr_t address); 42 bool setAddress(int socket, 43 int type, 44 const char* interfaceName, 45 in_addr_t address); 46 void removeIpAddress(const char* interfaceName, in_addr_t address); 47 48 const char* mInterfacePrefix; 49 size_t mPrefixLength; 50 in_addr_t mBaseAddress; 51 uint32_t mMaskLength; 52 std::unordered_map<in_addr_t, std::string> mUsedIpAddresses; 53 }; 54 55