MeshCentral/agents/xmodules/WifiScanner.js
2017-10-16 20:11:03 -07:00

267 lines
33 KiB
JavaScript

var MemoryStream = require('MemoryStream');
var WindowsWireless = new Buffer([
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var WindowsChildScript = new Buffer([
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0x28, 0x61, 0x70, 0x29, 0x3B, 0x20, 0x7D, 0x29, 0x3B, 0x0D, 0x0A, 0x57, 0x69, 0x72, 0x65, 0x6C, 0x65, 0x73, 0x73, 0x2E, 0x53, 0x63, 0x61, 0x6E, 0x28, 0x29, 0x3B, 0x0D, 0x0A]);
function AccessPoint(_ssid, _bssid, _lq)
{
this.ssid = _ssid;
this.bssid = _bssid;
this.lq = _lq;
}
AccessPoint.prototype.toString = function ()
{
return (this.ssid + " [" + this.bssid + "]: " + this.lq);
}
function WiFiScanner()
{
var emitterUtils = require('events').inherits(this);
emitterUtils.createEvent('accessPoint');
this.hasWireless = function ()
{
var retVal = false;
var interfaces = require('os').networkInterfaces();
for (var name in interfaces)
{
if (interfaces[name][0].type == 'wireless') { retVal = true; break; }
}
return (retVal);
};
this.Scan = function ()
{
if (process.platform == 'win32')
{
this.master = require('ScriptContainer').Create(15, ContainerPermissions.DEFAULT);
this.master.parent = this;
this.master.on('data', function (j) { this.parent.emit('accessPoint', new AccessPoint(j.ssid, j.bssid, j.lq)); });
this.master.addModule('Wireless', WindowsWireless.toString());
this.master.ExecuteString(WindowsChildScript.toString());
}
else if (process.platform == 'linux')
{
// Need to get the wireless interface name
var interfaces = require('os').networkInterfaces();
var wlan = null;
for (var i in interfaces)
{
if (interfaces[i][0].type == 'wireless')
{
wlan = i;
break;
}
}
if (wlan != null)
{
this.child = require('ILibProcessPipe').CreateProcess("/sbin/iwlist", "iwlist", wlan, "scan");
this.child.parent = this;
this.child.ms = new MemoryStream();
this.child.ms.parent = this.child;
this.child.on('data', function (buffer) { this.ms.write(buffer); });
this.child.on('end', function () { this.ms.end(); });
this.child.ms.on('end', function ()
{
var str = this.buffer.toString();
tokens = str.split(' - Address: ');
for (var block in tokens)
{
if (block == 0) continue;
var ln = tokens[block].split('\n');
var _bssid = ln[0];
var _lq;
var _ssid;
for (var lnblock in ln)
{
lnblock = ln[lnblock].trim();
lnblock = lnblock.trim();
if (lnblock.startsWith('ESSID:'))
{
_ssid = lnblock.slice(7, lnblock.length - 1);
if (_ssid == '<hidden>') { _ssid = ''; }
}
if (lnblock.startsWith('Signal level='))
{
_lq = lnblock.slice(13,lnblock.length-4);
}
}
this.parent.parent.emit('accessPoint', new AccessPoint(_ssid, _bssid, _lq));
}
});
}
}
}
}
module.exports = WiFiScanner;