1 | // Copyright 2013 Selenium committers |
2 | // Copyright 2013 Software Freedom Conservancy |
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 | 'use strict'; |
17 | |
18 | var os = require('os'); |
19 | |
20 | |
21 | function getLoInterface() { |
22 | var name; |
23 | if (process.platform === 'darwin') { |
24 | name = 'lo0'; |
25 | } else if (process.platform === 'linux') { |
26 | name = 'lo'; |
27 | } |
28 | return name ? os.networkInterfaces()[name] : null; |
29 | } |
30 | |
31 | |
32 | /** |
33 | * Queries the system network interfaces for an IP address. |
34 | * @param {boolean} loopback Whether to find a loopback address. |
35 | * @param {string=} opt_family The IP family (IPv4 or IPv6). Defaults to IPv4. |
36 | * @return {string} The located IP address or undefined. |
37 | */ |
38 | function getAddress(loopback, opt_family) { |
39 | var family = opt_family || 'IPv4'; |
40 | var addresses = []; |
41 | |
42 | var interfaces; |
43 | if (loopback) { |
44 | interfaces = [getLoInterface()]; |
45 | } |
46 | interfaces = interfaces || os.networkInterfaces(); |
47 | for (var key in interfaces) { |
48 | interfaces[key].forEach(function(ipAddress) { |
49 | if (ipAddress.family === family && |
50 | ipAddress.internal === loopback) { |
51 | addresses.push(ipAddress.address); |
52 | } |
53 | }); |
54 | } |
55 | return addresses[0]; |
56 | } |
57 | |
58 | |
59 | // PUBLIC API |
60 | |
61 | |
62 | /** |
63 | * Retrieves the external IP address for this host. |
64 | * @param {string=} opt_family The IP family to retrieve. Defaults to "IPv4". |
65 | * @return {string} The IP address or undefined if not available. |
66 | */ |
67 | exports.getAddress = function(opt_family) { |
68 | return getAddress(false, opt_family); |
69 | }; |
70 | |
71 | |
72 | /** |
73 | * Retrieves a loopback address for this machine. |
74 | * @param {string=} opt_family The IP family to retrieve. Defaults to "IPv4". |
75 | * @return {string} The IP address or undefined if not available. |
76 | */ |
77 | exports.getLoopbackAddress = function(opt_family) { |
78 | return getAddress(true, opt_family); |
79 | }; |