1 /* 2 * Copyright (c) 2022 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 #ifndef WRAPPER_DECODER_H 17 #define WRAPPER_DECODER_H 18 19 #include "netsys_event_message.h" 20 21 #include <functional> 22 #include <linux/rtnetlink.h> 23 #include <netinet/icmp6.h> 24 25 namespace OHOS { 26 namespace nmd { 27 class WrapperDecoder { 28 public: 29 WrapperDecoder(std::shared_ptr<NetsysEventMessage> message); 30 WrapperDecoder() = delete; 31 ~WrapperDecoder() = default; 32 33 /** 34 * Decode Ascii event message 35 * @param buffer message buffer 36 * @param buffSize message buffer size 37 * @return true if decode success, otherwise false 38 */ 39 bool DecodeAscii(const char *buffer, int32_t buffSize); 40 41 /** 42 * Decode Binary event message 43 * @param buffer message buffer 44 * @param buffSize message buffer size 45 * @return true if decode success, otherwise false 46 */ 47 bool DecodeBinary(const char *buffer, int32_t buffSize); 48 49 private: 50 static constexpr int32_t SPLIT_SIZE = 2; 51 std::shared_ptr<NetsysEventMessage> message_ = nullptr; 52 53 bool PushAsciiMessage(const std::vector<std::string> &recvmsg); 54 bool InterpreteInfoMsg(const nlmsghdr *hdrMsg); 55 bool InterpreteUlogMsg(const nlmsghdr *hdrMsg); 56 bool InterpreteAddressMsg(const nlmsghdr *hdrMsg); 57 bool InterpreteRtMsg(const nlmsghdr *hdrMsg); 58 bool InterpreteIFaceAddr(ifaddrmsg *ifAddr, char *addrStr, socklen_t sockLen, const std::string &msgType, 59 char *ifName, rtattr *rta); 60 bool SaveAddressMsg(const std::string addrStr, const ifaddrmsg *addrMsg, const std::string flags, 61 const ifa_cacheinfo *cacheInfo, const std::string ifname); 62 bool SaveRtMsg(std::string dst, const std::string gateWay, const std::string device, int32_t length, 63 int32_t family); 64 rtmsg *CheckRtParam(const nlmsghdr *hdrMsg, uint8_t type); 65 void SaveOtherMsg(const std::string &info); 66 }; 67 } // namespace nmd 68 } // namespace OHOS 69 70 #endif // WRAPPER_DECODER_H 71