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 _NAT_CONTROLLER_H 18 #define _NAT_CONTROLLER_H 19 20 #include <linux/in.h> 21 22 #include "SecondaryTableController.h" 23 24 class NatController { 25 26 public: 27 NatController(SecondaryTableController *ctrl); 28 virtual ~NatController(); 29 30 int enableNat(const int argc, char **argv); 31 int disableNat(const int argc, char **argv); 32 int setupIptablesHooks(); 33 34 static const char* LOCAL_FORWARD; 35 static const char* LOCAL_NAT_POSTROUTING; 36 static const char* LOCAL_TETHER_COUNTERS_CHAIN; 37 38 private: 39 int natCount; 40 SecondaryTableController *secondaryTableCtrl; 41 42 int setDefaults(); 43 int runCmd(int argc, const char **argv); 44 bool checkInterface(const char *iface); 45 int setForwardRules(bool set, const char *intIface, const char *extIface); 46 int setTetherCountingRules(bool add, const char *intIface, const char *extIface); 47 int routesOp(bool add, const char *intIface, const char *extIface, char **argv, int addrCount); 48 }; 49 50 #endif 51
