| /* |
| * Copyright (C) 2017 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #ifndef WAKEUP_CONTROLLER_H |
| #define WAKEUP_CONTROLLER_H |
| |
| #include <functional> |
| |
| #include <netdutils/Status.h> |
| |
| #include "IptablesRestoreController.h" |
| #include "NFLogListener.h" |
| |
| namespace android { |
| namespace net { |
| |
| class WakeupController { |
| public: |
| |
| // Simple data struct for passing back packet wakeup event information to the ReportFn callback. |
| struct ReportArgs { |
| std::string prefix; |
| uint64_t timestampNs; |
| int uid; |
| int gid; |
| int ethertype; |
| int ipNextHeader; |
| std::vector<uint8_t> dstHw; |
| std::string srcIp; |
| std::string dstIp; |
| int srcPort; |
| int dstPort; |
| }; |
| |
| // Callback that is triggered for every wakeup event. |
| using ReportFn = std::function<void(const struct ReportArgs&)>; |
| |
| // iptables chain where wakeup packets are matched |
| static const char LOCAL_MANGLE_INPUT[]; |
| |
| static const uint32_t kDefaultPacketCopyRange; |
| |
| WakeupController(ReportFn report, IptablesRestoreInterface* iptables) |
| : mReport(report), mIptables(iptables) {} |
| |
| ~WakeupController(); |
| |
| // Subscribe this controller to a NFLOG events arriving at |listener|. |
| netdutils::Status init(NFLogListenerInterface* listener); |
| |
| // Install iptables rules to match packets arriving on |ifName| |
| // which match |mark|/|mask|. Metadata from matching packets will |
| // be delivered along with the arbitrary string |prefix| to |
| // INetdEventListener::onWakeupEvent. |
| netdutils::Status addInterface(const std::string& ifName, const std::string& prefix, |
| uint32_t mark, uint32_t mask); |
| |
| // Remove iptables rules previously installed by addInterface(). |
| // |ifName|, |prefix|, |mark| and |mask| must match precisely. |
| netdutils::Status delInterface(const std::string& ifName, const std::string& prefix, |
| uint32_t mark, uint32_t mask); |
| |
| private: |
| netdutils::Status execIptables(const std::string& action, const std::string& ifName, |
| const std::string& prefix, uint32_t mark, uint32_t mask); |
| |
| ReportFn const mReport; |
| IptablesRestoreInterface* const mIptables; |
| NFLogListenerInterface* mListener; |
| }; |
| |
| } // namespace net |
| } // namespace android |
| |
| #endif /* WAKEUP_CONTROLLER_H */ |