1 /*
2  * Copyright (C) 2017 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 
17 #pragma once
18 
19 #include "macaddress.h"
20 #include "pollable.h"
21 #include "result.h"
22 
23 #include <string>
24 #include <unordered_set>
25 
26 struct Ieee80211Header;
27 struct pcap;
28 typedef struct pcap pcap_t;
29 
30 class WifiForwarder : public Pollable {
31 public:
32     explicit WifiForwarder(const char* monitorInterfaceName);
33     ~WifiForwarder();
34 
35     Result init();
36 
37     // Pollable interface
38     void getPollData(std::vector<pollfd>* fds) const override;
39     Timestamp getTimeout() const override;
40     bool onReadAvailable(int fd, int* status) override;
41     bool onClose(int fd, int* status) override;
42     bool onTimeout(int* status) override;
43 private:
44     void forwardFromPcap();
45     void injectFromPipe();
46     void cleanup();
47 
48     std::string mInterfaceName;
49     Pollable::Timestamp mDeadline;
50     std::vector<unsigned char> mMonitorBuffer;
51     pcap_t* mMonitorPcap;
52     int mPipeFd;
53 };
54