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      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     int  mSeq;
     25     char *mPath;
     26     int  mAction;
     27     char *mSubsystem;
     28     char *mParams[NL_PARAMS_MAX];
     29 
     30 public:
     31     const static int NlActionUnknown;
     32     const static int NlActionAdd;
     33     const static int NlActionRemove;
     34     const static int NlActionChange;
     35     const static int NlActionLinkDown;
     36     const static int NlActionLinkUp;
     37     const static int NlActionAddressUpdated;
     38     const static int NlActionAddressRemoved;
     39 
     40     NetlinkEvent();
     41     virtual ~NetlinkEvent();
     42 
     43     bool decode(char *buffer, int size, int format = NetlinkListener::NETLINK_FORMAT_ASCII);
     44     const char *findParam(const char *paramName);
     45 
     46     const char *getSubsystem() { return mSubsystem; }
     47     int getAction() { return mAction; }
     48 
     49     void dump();
     50 
     51  protected:
     52     bool parseIfAddrMessage(int type, struct ifaddrmsg *ifaddr, int rtasize);
     53     bool parseBinaryNetlinkMessage(char *buffer, int size);
     54     bool parseAsciiNetlinkMessage(char *buffer, int size);
     55 };
     56 
     57 #endif
     58