1 /* 2 * Copyright 2017 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 * tun_interface.h - creates tun or tap interfaces for testing purposes 17 */ 18 19 #ifndef _SYSTEM_NETD_TESTS_TUN_INTERACE_H 20 #define _SYSTEM_NETD_TESTS_TUN_INTERACE_H 21 22 namespace android { 23 namespace net { 24 25 class TunInterface { 26 public: 27 TunInterface() = default; ~TunInterface()28 ~TunInterface() { destroy(); } 29 30 // Creates a tun or tap interface. Returns 0 on success or -errno on failure. Must succeed 31 // before it is legal to call any of the other methods in this class. 32 int init(const std::string& ifName, bool isTap); 33 34 // Convenience overloads. init()35 int init() { return init("", false); } init(const std::string & ifName)36 int init(const std::string& ifName) { return init(ifName, false); } init(bool isTap)37 int init(bool isTap) { return init("", isTap); } 38 void destroy(); 39 name()40 const std::string& name() const { return mIfName; } ifindex()41 int ifindex() const { return mIfIndex; } srcAddr()42 const in6_addr& srcAddr() const { return mSrcAddr; } dstAddr()43 const in6_addr& dstAddr() const { return mDstAddr; } 44 45 int addAddress(const std::string& addr, int prefixlen); getFdForTesting()46 int getFdForTesting() const { return mFd; } 47 48 private: 49 int mFd = -1; 50 std::string mIfName; 51 int mIfIndex; 52 in6_addr mSrcAddr, mDstAddr; 53 }; 54 55 } // namespace net 56 } // namespace android 57 58 #endif 59