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
23class NetlinkEvent {
24public:
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
39private:
40    int  mSeq;
41    char *mPath;
42    Action mAction;
43    char *mSubsystem;
44    char *mParams[NL_PARAMS_MAX];
45
46public:
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
53    const char *getSubsystem() { return mSubsystem; }
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};
68
69#endif
70