| 1 | /* |
| 2 | Copyright 2018-2021 Intel Corporation |
| 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 | var MemoryStream = require('MemoryStream'); |
| 18 | var WindowsChildScript = 'var parent = require("ScriptContainer");var Wireless = require("wifi-scanner-windows");Wireless.on("Scan", function (ap) { parent.send(ap); });Wireless.Scan();'; |
| 19 | |
| 20 | |
| 21 | function AccessPoint(_ssid, _bssid, _lq) |
| 22 | { |
| 23 | this.ssid = _ssid; |
| 24 | this.bssid = _bssid; |
| 25 | this.lq = _lq; |
| 26 | } |
| 27 | AccessPoint.prototype.toString = function () |
| 28 | { |
| 29 | return ("[" + this.bssid + "]: " + this.ssid + " (" + this.lq + ")"); |
| 30 | //return (this.ssid + " [" + this.bssid + "]: " + this.lq); |
| 31 | } |
| 32 | |
| 33 | function WiFiScanner() |
| 34 | { |
| 35 | var emitterUtils = require('events').inherits(this); |
| 36 | emitterUtils.createEvent('accessPoint'); |
| 37 | |
| 38 | this.hasWireless = function () |
| 39 | { |
| 40 | var retVal = false; |
| 41 | var interfaces = require('os').networkInterfaces(); |
| 42 | for (var name in interfaces) |
| 43 | { |
| 44 | if (interfaces[name][0].type == 'wireless') { retVal = true; break; } |
| 45 | } |
| 46 | return (retVal); |
| 47 | }; |
| 48 | |
| 49 | this.Scan = function () |
| 50 | { |
| 51 | if (process.platform == 'win32') |
| 52 | { |
| 53 | this.main = require('ScriptContainer').Create(15, ContainerPermissions.DEFAULT); |
| 54 | this.main.parent = this; |
| 55 | this.main.on('data', function (j) { this.parent.emit('accessPoint', new AccessPoint(j.ssid, j.bssid, j.lq)); }); |
| 56 | |
| 57 | this.main.addModule('wifi-scanner-windows', getJSModule('wifi-scanner-windows')); |
| 58 | this.main.ExecuteString(WindowsChildScript); |
| 59 | } |
| 60 | else if (process.platform == 'linux') |
| 61 | { |
| 62 | // Need to get the wireless interface name |
| 63 | var interfaces = require('os').networkInterfaces(); |
| 64 | var wlan = null; |
| 65 | for (var i in interfaces) |
| 66 | { |
| 67 | if (interfaces[i][0].type == 'wireless') |
| 68 | { |
| 69 | wlan = i; |
| 70 | break; |
| 71 | } |
| 72 | } |
| 73 | if (wlan != null) |
| 74 | { |
| 75 | this.child = require('child_process').execFile('/sbin/iwlist', ['iwlist', wlan, 'scan']); |
| 76 | this.child.parent = this; |
| 77 | this.child.ms = new MemoryStream(); |
| 78 | this.child.ms.parent = this.child; |
| 79 | this.child.stdout.on('data', function (buffer) { this.parent.ms.write(buffer); }); |
| 80 | this.child.on('exit', function () { this.ms.end(); }); |
| 81 | this.child.ms.on('end', function () |
| 82 | { |
| 83 | var str = this.buffer.toString(); |
| 84 | tokens = str.split(' - Address: '); |
| 85 | for (var block in tokens) |
| 86 | { |
| 87 | if (block == 0) continue; |
| 88 | var ln = tokens[block].split('\n'); |
| 89 | var _bssid = ln[0]; |
| 90 | var _lq; |
| 91 | var _ssid; |
| 92 | |
| 93 | for (var lnblock in ln) |
| 94 | { |
| 95 | lnblock = ln[lnblock].trim(); |
| 96 | lnblock = lnblock.trim(); |
| 97 | if (lnblock.startsWith('ESSID:')) |
| 98 | { |
| 99 | _ssid = lnblock.slice(7, lnblock.length - 1); |
| 100 | if (_ssid == '<hidden>') { _ssid = ''; } |
| 101 | } |
| 102 | if (lnblock.startsWith('Signal level=')) |
| 103 | { |
| 104 | _lq = lnblock.slice(13,lnblock.length-4); |
| 105 | } |
| 106 | else if (lnblock.startsWith('Quality=')) |
| 107 | { |
| 108 | _lq = lnblock.slice(8, 10); |
| 109 | var scale = lnblock.slice(11, 13); |
| 110 | } |
| 111 | } |
| 112 | this.parent.parent.emit('accessPoint', new AccessPoint(_ssid, _bssid, _lq)); |
| 113 | } |
| 114 | }); |
| 115 | } |
| 116 | } |
| 117 | } |
| 118 | } |
| 119 | |
| 120 | module.exports = WiFiScanner; |
| 121 | |
| 122 | |
| 123 | |
| 124 | |
| 125 | |
| 126 | |
| 127 |