1 /* 2 * Copyright (C) 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 17 #ifndef WAKEUP_CONTROLLER_H 18 #define WAKEUP_CONTROLLER_H 19 20 #include <functional> 21 22 #include <netdutils/Status.h> 23 24 #include "IptablesRestoreController.h" 25 #include "NFLogListener.h" 26 27 namespace android { 28 namespace net { 29 30 class WakeupController { 31 public: 32 using ReportFn = std::function<void(const std::string&, uid_t, gid_t, uint64_t)>; 33 34 // iptables chain where wakeup packets are matched 35 static const char LOCAL_MANGLE_INPUT[]; 36 37 WakeupController(ReportFn report, IptablesRestoreInterface* iptables) 38 : mReport(report), mIptables(iptables) {} 39 40 ~WakeupController(); 41 42 // Subscribe this controller to a NFLOG events arriving at |listener|. 43 netdutils::Status init(NFLogListenerInterface* listener); 44 45 // Install iptables rules to match packets arriving on |ifName| 46 // which match |mark|/|mask|. Metadata from matching packets will 47 // be delivered along with the arbitrary string |prefix| to 48 // INetdEventListener::onWakeupEvent. 49 netdutils::Status addInterface(const std::string& ifName, const std::string& prefix, 50 uint32_t mark, uint32_t mask); 51 52 // Remove iptables rules previously installed by addInterface(). 53 // |ifName|, |prefix|, |mark| and |mask| must match precisely. 54 netdutils::Status delInterface(const std::string& ifName, const std::string& prefix, 55 uint32_t mark, uint32_t mask); 56 57 private: 58 netdutils::Status execIptables(const std::string& action, const std::string& ifName, 59 const std::string& prefix, uint32_t mark, uint32_t mask); 60 61 ReportFn const mReport; 62 IptablesRestoreInterface* const mIptables; 63 NFLogListenerInterface* mListener; 64 }; 65 66 } // namespace net 67 } // namespace android 68 69 #endif /* WAKEUP_CONTROLLER_H */ 70
