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Mini Shell
'use strict';
// @ts-check
// ==================================================================================
// wifi.js
// ----------------------------------------------------------------------------------
// Description: System Information - library
// for Node.js
// Copyright: (c) 2014 - 2020
// Author: Sebastian Hildebrandt
// ----------------------------------------------------------------------------------
// License: MIT
// ==================================================================================
// 9. wifi
// ----------------------------------------------------------------------------------
const os = require('os');
const exec = require('child_process').exec;
const util = require('./util');
let _platform = process.platform;
const _linux = (_platform === 'linux');
const _darwin = (_platform === 'darwin');
const _windows = (_platform === 'win32');
function wifiDBFromQuality(quality) {
return (parseFloat(quality) / 2 - 100);
}
function wifiQualityFromDB(db) {
const result = 2 * (parseFloat(db) + 100);
return result <= 100 ? result : 100;
}
function wifiFrequencyFromChannel(channel) {
const frequencies = {
1: 2412,
2: 2417,
3: 2422,
4: 2427,
5: 2432,
6: 2437,
7: 2442,
8: 2447,
9: 2452,
10: 2457,
11: 2462,
12: 2467,
13: 2472,
14: 2484,
32: 5160,
34: 5170,
36: 5180,
38: 5190,
40: 5200,
42: 5210,
44: 5220,
46: 5230,
48: 5240,
50: 5250,
52: 5260,
54: 5270,
56: 5280,
58: 5290,
60: 5300,
62: 5310,
64: 5320,
68: 5340,
96: 5480,
100: 5500,
102: 5510,
104: 5520,
106: 5530,
108: 5540,
110: 5550,
112: 5560,
114: 5570,
116: 5580,
118: 5590,
120: 5600,
122: 5610,
124: 5620,
126: 5630,
128: 5640,
132: 5660,
134: 5670,
136: 5680,
138: 5690,
140: 5700,
142: 5710,
144: 5720,
149: 5745,
151: 5755,
153: 5765,
155: 5775,
157: 5785,
159: 5795,
161: 5805,
165: 5825,
169: 5845,
173: 5865,
183: 4915,
184: 4920,
185: 4925,
187: 4935,
188: 4940,
189: 4945,
192: 4960,
196: 4980
};
return {}.hasOwnProperty.call(frequencies, channel) ? frequencies[channel] : -1;
}
function wifiNetworks(callback) {
return new Promise((resolve) => {
process.nextTick(() => {
let result = [];
if (_linux) {
let cmd = 'nmcli --terse --fields active,ssid,bssid,mode,chan,freq,signal,security,wpa-flags,rsn-flags device wifi list 2>/dev/null';
exec(cmd, { maxBuffer: 1024 * 20000 }, function (error, stdout) {
const parts = stdout.toString().split('ACTIVE:');
parts.shift();
parts.forEach(part => {
part = 'ACTIVE:' + part;
const lines = part.split(os.EOL);
const channel = util.getValue(lines, 'CHAN');
const frequency = util.getValue(lines, 'FREQ').toLowerCase().replace('mhz', '').trim();
const security = util.getValue(lines, 'SECURITY').replace('(', '').replace(')', '');
const wpaFlags = util.getValue(lines, 'WPA-FLAGS').replace('(', '').replace(')', '');
const rsnFlags = util.getValue(lines, 'RSN-FLAGS').replace('(', '').replace(')', '');
result.push({
ssid: util.getValue(lines, 'SSID'),
bssid: util.getValue(lines, 'BSSID'),
mode: util.getValue(lines, 'MODE'),
channel: channel ? parseInt(channel, 10) : -1,
frequency: frequency ? parseInt(frequency, 10) : -1,
signalLevel: wifiDBFromQuality(util.getValue(lines, 'SIGNAL')),
quality: parseFloat(util.getValue(lines, 'SIGNAL')),
security: security && security !== 'none' ? security.split(' ') : [],
wpaFlags: wpaFlags && wpaFlags !== 'none' ? wpaFlags.split(' ') : [],
rsnFlags: rsnFlags && rsnFlags !== 'none' ? rsnFlags.split(' ') : []
});
});
if (callback) {
callback(result);
}
resolve(result);
});
} else if (_darwin) {
let cmd = '/System/Library/PrivateFrameworks/Apple80211.framework/Versions/Current/Resources/airport -s';
exec(cmd, { maxBuffer: 1024 * 20000 }, function (error, stdout) {
const lines = stdout.toString().split(os.EOL);
if (lines && lines.length > 1) {
const parsedhead = util.parseHead(lines[0], 1);
if (parsedhead.length >= 7) {
lines.shift();
lines.forEach(line => {
if (line.trim()) {
const channelStr = line.substring(parsedhead[3].from, parsedhead[3].to).trim();
const channel = channelStr ? parseInt(channelStr, 10) : -1;
const signalLevel = line.substring(parsedhead[2].from, parsedhead[2].to).trim();
const securityAll = line.substring(parsedhead[6].from, 1000).trim().split(' ');
let security = [];
let wpaFlags = [];
securityAll.forEach(securitySingle => {
if (securitySingle.indexOf('(') > 0) {
const parts = securitySingle.split('(');
security.push(parts[0]);
wpaFlags = wpaFlags.concat(parts[1].replace(')', '').split(','));
}
});
wpaFlags = Array.from(new Set(wpaFlags));
result.push({
ssid: line.substring(parsedhead[0].from, parsedhead[0].to).trim(),
bssid: line.substring(parsedhead[1].from, parsedhead[1].to).trim(),
mode: '',
channel,
frequency: wifiFrequencyFromChannel(channel),
signalLevel: signalLevel ? parseInt(signalLevel, 10) : -1,
quality: wifiQualityFromDB(signalLevel),
security,
wpaFlags,
rsnFlags: []
});
}
});
}
}
if (callback) {
callback(result);
}
resolve(result);
});
} else if (_windows) {
let cmd = 'chcp 65001 && netsh wlan show networks mode=Bssid';
exec(cmd, util.execOptsWin, function (error, stdout) {
const parts = stdout.toString('utf8').split(os.EOL + os.EOL + 'SSID ');
parts.shift();
parts.forEach(part => {
const lines = part.split(os.EOL);
if (lines && lines.length >= 8 && lines[0].indexOf(':') >= 0) {
let bssid = lines[4].split(':');
bssid.shift();
bssid = bssid.join(':').trim();
const channel = lines[7].split(':').pop().trim();
const quality = lines[5].split(':').pop().trim();
result.push({
ssid: lines[0].split(':').pop().trim(),
bssid,
mode: '',
channel: channel ? parseInt(channel, 10) : -1,
frequency: wifiFrequencyFromChannel(channel),
signalLevel: wifiDBFromQuality(quality),
quality: quality ? parseInt(quality, 10) : -1,
security: [lines[2].split(':').pop().trim()],
wpaFlags: [lines[3].split(':').pop().trim()],
rsnFlags: []
});
}
});
if (callback) {
callback(result);
}
resolve(result);
});
} else {
if (callback) {
callback(result);
}
resolve(result);
}
});
});
}
exports.wifiNetworks = wifiNetworks;
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