1 /*
2  * Copyright (C) 2016 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 
18 #ifndef SYSTEM_EXTRAS_MULTINETWORK_COMMON_H_
19 #define SYSTEM_EXTRAS_MULTINETWORK_COMMON_H_
20 
21 #include <sys/cdefs.h>
22 #include <sys/socket.h>
23 #include <unistd.h>
24 #include <string>
25 #include <android/multinetwork.h>
26 
27 enum class ApiMode {
28     EXPLICIT,
29     PROCESS,
30 };
31 
32 
33 struct Arguments {
ArgumentsArguments34     Arguments() : nethandle(NETWORK_UNSPECIFIED),
35                   api_mode(ApiMode::EXPLICIT),
36                   family(AF_UNSPEC),
37                   arg1(nullptr) {}
38     ~Arguments();
39 
40     bool parseArguments(int argc, const char* argv[]);
41 
42     net_handle_t nethandle;
43     ApiMode api_mode;
44     sa_family_t family;
45     const char* arg1;
46 };
47 
48 
49 void printUsage(const char *progname);
50 
51 // If port is non-zero returns strings of the form "192.0.2.1:port" or
52 // "[2001:db8::1]:port", else it returns the bare IP string literal.
53 std::string inetSockaddrToString(const sockaddr* sa);
54 
55 
56 struct FdAutoCloser {
FdAutoCloserFdAutoCloser57     FdAutoCloser() : fd(-1) {}
FdAutoCloserFdAutoCloser58     /* not explicit */ FdAutoCloser(int fd) : fd(fd) {}
~FdAutoCloserFdAutoCloser59     ~FdAutoCloser() {
60         if (fd > -1) {
61             close(fd);
62         }
63         fd = -1;
64     }
65 
66     int fd;
67 };
68 
69 #endif  // SYSTEM_EXTRAS_MULTINETWORK_COMMON_H_
70