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 #include <arpa/inet.h>
19 #include <errno.h>
20 #include <netdb.h>
21 #include <netinet/in.h>
22 #include <string.h>
23 #include <sys/socket.h>
24
25 #include <iostream>
26 #include <string>
27
28 #include <android-base/format.h>
29 #include <android/multinetwork.h>
30 #include "common.h"
31
32
main(int argc,const char * argv[])33 int main(int argc, const char* argv[]) {
34 int rval = -1;
35
36 struct Arguments args;
37 if (!args.parseArguments(argc, argv)) { return rval; }
38
39 const struct addrinfo hints = {
40 .ai_family = args.family,
41 .ai_socktype = SOCK_DGRAM,
42 };
43 struct addrinfo *result = nullptr;
44
45 time_t t;
46 time(&t);
47 srand((unsigned long)time);
48
49 for (int i = 0; i < args.attempts; i++) {
50 std::string name;
51
52 if (args.random_name) {
53 name = fmt::format("{}-{}-ds.metric.gstatic.com", rand(), rand());
54 } else {
55 name = args.arg1;
56 }
57
58 std::cout << "# " << name << " (via nethandle " << args.nethandle << "):" << std::endl;
59
60 switch (args.api_mode) {
61 case ApiMode::EXPLICIT:
62 rval = android_getaddrinfofornetwork(args.nethandle, name.c_str(), nullptr, &hints,
63 &result);
64 break;
65 case ApiMode::PROCESS:
66 if (args.nethandle != NETWORK_UNSPECIFIED) {
67 rval = android_setprocnetwork(args.nethandle);
68 if (rval != 0) {
69 std::cerr << "android_setprocnetwork returned " << rval << std::endl;
70 return rval;
71 }
72 }
73 rval = getaddrinfo(name.c_str(), nullptr, &hints, &result);
74 break;
75 default:
76 // Unreachable.
77 std::cerr << "Unknown api mode." << std::endl;
78 return -1;
79 }
80
81 if (rval != 0) {
82 std::cerr << "DNS resolution failure; gaierror=" << rval << " [" << gai_strerror(rval)
83 << "]" << std::endl;
84 return rval;
85 }
86
87 for (struct addrinfo* rp = result; rp != nullptr; rp = rp->ai_next) {
88 std::cout << inetSockaddrToString(rp->ai_addr) << std::endl;
89 }
90
91 freeaddrinfo(result);
92 }
93
94 return 0;
95 }
96