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 INCLUDE_FWMARK_CLIENT_H
17 #define INCLUDE_FWMARK_CLIENT_H
18 
19 #include <cstdint>
20 
21 #include "fwmark_command.h"
22 
23 namespace OHOS {
24 namespace nmd {
25 class FwmarkClient {
26 public:
27     FwmarkClient();
28     ~FwmarkClient();
29 
30     /**
31      * Binds {@code fd} to the network designated by {@code netId}.
32      *
33      * @param socketFd
34      * @param netId
35      *
36      * @return Return the return value of the netsys interface call
37      */
38     int32_t BindSocket(int32_t fd, uint32_t netId);
39 
40     /**
41      * Protect {@code socketFd} to the network bypass VPN.
42      *
43      * @param socketFd
44      */
45     int32_t ProtectFromVpn(int32_t socketFd);
46 
47 private:
48     // Sends |data| to the fwmark network, along with |fd| as ancillary data using cmsg(3).
49     int32_t Send(FwmarkCommand *data, int32_t fd);
50     int32_t HandleError(int32_t ret, int32_t errorCode, int32_t sock);
51 };
52 #ifdef __cplusplus
53     extern "C" int32_t BindSocket(int32_t fd, uint32_t netId);
54 #endif
55 } // namespace nmd
56 } // namespace OHOS
57 #endif // INCLUDE_FWMARK_CLIENT_H
58