1 /* 2 * Copyright (C) 2012 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 _FIREWALL_CONTROLLER_H 18 #define _FIREWALL_CONTROLLER_H 19 20 #include <string> 21 22 enum FirewallRule { ALLOW, DENY }; 23 24 #define PROTOCOL_TCP 6 25 #define PROTOCOL_UDP 17 26 27 /* 28 * Simple firewall that drops all packets except those matching explicitly 29 * defined ALLOW rules. 30 */ 31 class FirewallController { 32 public: 33 FirewallController(); 34 35 int setupIptablesHooks(void); 36 37 int enableFirewall(void); 38 int disableFirewall(void); 39 int isFirewallEnabled(void); 40 41 /* Match traffic going in/out over the given iface. */ 42 int setInterfaceRule(const char*, FirewallRule); 43 /* Match traffic coming-in-to or going-out-from given address. */ 44 int setEgressSourceRule(const char*, FirewallRule); 45 /* Match traffic coming-in-from or going-out-to given address, port, and protocol. */ 46 int setEgressDestRule(const char*, int, int, FirewallRule); 47 /* Match traffic owned by given UID. */ 48 int setUidRule(int, FirewallRule); 49 50 static const char* LOCAL_INPUT; 51 static const char* LOCAL_OUTPUT; 52 static const char* LOCAL_FORWARD; 53 54 }; 55 56 #endif 57
