1 /* 2 * Copyright (C) 2008 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 _TETHER_CONTROLLER_H 18 #define _TETHER_CONTROLLER_H 19 20 #include <netinet/in.h> 21 22 #include <list> 23 #include <set> 24 #include <string> 25 26 namespace android { 27 namespace net { 28 29 class TetherController { 30 private: 31 std::list<std::string> mInterfaces; 32 // NetId to use for forwarded DNS queries. This may not be the default 33 // network, e.g., in the case where we are tethering to a DUN APN. 34 unsigned mDnsNetId; 35 std::list<std::string> mDnsForwarders; 36 pid_t mDaemonPid; 37 int mDaemonFd; 38 std::set<std::string> mForwardingRequests; 39 40 public: 41 TetherController(); 42 virtual ~TetherController(); 43 44 bool enableForwarding(const char* requester); 45 bool disableForwarding(const char* requester); 46 size_t forwardingRequestCount(); 47 48 int startTethering(int num_addrs, char **dhcp_ranges); 49 int stopTethering(); 50 bool isTetheringStarted(); 51 52 unsigned getDnsNetId(); 53 int setDnsForwarders(unsigned netId, char **servers, int numServers); 54 const std::list<std::string> &getDnsForwarders() const; 55 56 int tetherInterface(const char *interface); 57 int untetherInterface(const char *interface); 58 const std::list<std::string> &getTetheredInterfaceList() const; 59 bool applyDnsInterfaces(); 60 61 private: 62 bool setIpFwdEnabled(); 63 }; 64 65 } // namespace net 66 } // namespace android 67 68 #endif 69
