128 lines
4.4 KiB
JavaScript
128 lines
4.4 KiB
JavaScript
/*
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Copyright 2018-2021 Intel Corporation
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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var MemoryStream = require('MemoryStream');
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var WindowsChildScript = 'var parent = require("ScriptContainer");var Wireless = require("wifi-scanner-windows");Wireless.on("Scan", function (ap) { parent.send(ap); });Wireless.Scan();';
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function AccessPoint(_ssid, _bssid, _lq)
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{
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this.ssid = _ssid;
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this.bssid = _bssid;
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this.lq = _lq;
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}
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AccessPoint.prototype.toString = function ()
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{
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return ("[" + this.bssid + "]: " + this.ssid + " (" + this.lq + ")");
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//return (this.ssid + " [" + this.bssid + "]: " + this.lq);
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}
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function WiFiScanner()
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{
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var emitterUtils = require('events').inherits(this);
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emitterUtils.createEvent('accessPoint');
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this.hasWireless = function ()
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{
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var retVal = false;
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var interfaces = require('os').networkInterfaces();
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for (var name in interfaces)
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{
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if (interfaces[name][0].type == 'wireless') { retVal = true; break; }
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}
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return (retVal);
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};
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this.Scan = function ()
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{
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if (process.platform == 'win32')
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{
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this.main = require('ScriptContainer').Create(15, ContainerPermissions.DEFAULT);
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this.main.parent = this;
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this.main.on('data', function (j) { this.parent.emit('accessPoint', new AccessPoint(j.ssid, j.bssid, j.lq)); });
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this.main.addModule('wifi-scanner-windows', getJSModule('wifi-scanner-windows'));
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this.main.ExecuteString(WindowsChildScript);
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}
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else if (process.platform == 'linux')
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{
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// Need to get the wireless interface name
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var interfaces = require('os').networkInterfaces();
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var wlan = null;
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for (var i in interfaces)
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{
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if (interfaces[i][0].type == 'wireless')
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{
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wlan = i;
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break;
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}
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}
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if (wlan != null)
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{
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this.child = require('child_process').execFile('/sbin/iwlist', ['iwlist', wlan, 'scan']);
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this.child.parent = this;
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this.child.ms = new MemoryStream();
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this.child.ms.parent = this.child;
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this.child.stdout.on('data', function (buffer) { this.parent.ms.write(buffer); });
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this.child.on('exit', function () { this.ms.end(); });
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this.child.ms.on('end', function ()
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{
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var str = this.buffer.toString();
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tokens = str.split(' - Address: ');
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for (var block in tokens)
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{
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if (block == 0) continue;
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var ln = tokens[block].split('\n');
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var _bssid = ln[0];
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var _lq;
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var _ssid;
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for (var lnblock in ln)
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{
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lnblock = ln[lnblock].trim();
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lnblock = lnblock.trim();
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if (lnblock.startsWith('ESSID:'))
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{
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_ssid = lnblock.slice(7, lnblock.length - 1);
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if (_ssid == '<hidden>') { _ssid = ''; }
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}
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if (lnblock.startsWith('Signal level='))
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{
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_lq = lnblock.slice(13,lnblock.length-4);
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}
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else if (lnblock.startsWith('Quality='))
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{
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_lq = lnblock.slice(8, 10);
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var scale = lnblock.slice(11, 13);
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}
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}
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this.parent.parent.emit('accessPoint', new AccessPoint(_ssid, _bssid, _lq));
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}
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});
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}
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}
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}
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}
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module.exports = WiFiScanner;
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