<h1>Get LAN Clients<h1> <h2>A NodeJs-based command-line utility</h2> &copy; 2014 by David Reilly <hr/> Name of file: <span style="font-style: monospace">get_lan_clients.js</span>

get_lan_clients.js

/**
 *
 * get_lan_clients.js
 *
 * Outputs a parser-friendly list of LAN clients known by the local router.
 *
 * Dependencies:
 *      "request" module
 *      - install by issuing command 'npm install request'
 *
 * Usage:
 * > node get_lan_clients.js [gatewayip]
 *
 * gatewayip        The IP address of the LAN's default gateway/router,
 *                  assumed to be 192.168.1.1 by default.
 *
 *
 * Supported router/gateway hardware:
 *      TEW-639GR (TrendNet N300 Wireless Gigabit Router)
 *      - tested on Firmware v3.1.3.0 (dated 24-Aug-2012)
 *
 */
(function() {

	var protocol = 'http';
	var gatewayIp = '192.168.1.1';
	var urisByFunction = {
		dhcpClientList: '/internet/dhcpcliinfo.asp'
	};

	/**
	 * Build a URL given a protocol, host, and URI.
	 * @param proto Protocol (either 'http' or 'https')
	 * @param hostOrIp The hostname/domain or IP address of the server, as
	 *      accessible from the box running this script
	 * @param uri Resource URI on server
	 * @returns {string} Full URL to resource with specified protocol
	 */
	var getUrl = function(proto, hostOrIp, uri) {
		return proto+'://'+hostOrIp+uri;
	}

	var getGatewayUrl = function(uri) {
		return getUrl(protocol, gatewayIp, uri);
	}

	/**
	 * Module used to facilitate HTTP(s) requests
	 * @type {request|exports}
	 */
	var request = require('request');



	var getGatewayUrl = getGatewayUrl(urisByFunction.dhcpClientList);

	request('http://192.168.1.1', function (error, response, body) {
		if (!error && response.statusCode == 200) {
			console.log(body) // Print the google web page.
		}
	});

})();