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 #ifndef _NETLINKEVENT_H 17 #define _NETLINKEVENT_H 18 19 #include <sysutils/NetlinkListener.h> 20 21 #define NL_PARAMS_MAX 32 22 23 class NetlinkEvent { 24 public: 25 enum class Action { 26 kUnknown = 0, 27 kAdd = 1, 28 kRemove = 2, 29 kChange = 3, 30 kLinkUp = 4, 31 kLinkDown = 5, 32 kAddressUpdated = 6, 33 kAddressRemoved = 7, 34 kRdnss = 8, 35 kRouteUpdated = 9, 36 kRouteRemoved = 10, 37 }; 38 39 private: 40 int mSeq; 41 char *mPath; 42 Action mAction; 43 char *mSubsystem; 44 char *mParams[NL_PARAMS_MAX]; 45 46 public: 47 NetlinkEvent(); 48 virtual ~NetlinkEvent(); 49 50 bool decode(char *buffer, int size, int format = NetlinkListener::NETLINK_FORMAT_ASCII); 51 const char *findParam(const char *paramName); 52 getSubsystem()53 const char *getSubsystem() { return mSubsystem; } getAction()54 Action getAction() { return mAction; } 55 56 void dump(); 57 58 protected: 59 bool parseBinaryNetlinkMessage(char *buffer, int size); 60 bool parseAsciiNetlinkMessage(char *buffer, int size); 61 bool parseIfInfoMessage(const struct nlmsghdr *nh); 62 bool parseIfAddrMessage(const struct nlmsghdr *nh); 63 bool parseUlogPacketMessage(const struct nlmsghdr *nh); 64 bool parseNfPacketMessage(struct nlmsghdr *nh); 65 bool parseRtMessage(const struct nlmsghdr *nh); 66 bool parseNdUserOptMessage(const struct nlmsghdr *nh); 67 struct nlattr* findNlAttr(const nlmsghdr* nl, size_t hdrlen, uint16_t attr); 68 }; 69 70 #endif 71