domotz-remote-pawn/src/commands/telnetSend.js

Domotz Agent

/** This file is part of Domotz Agent.
  * Copyright (C) 2016  Domotz Ltd
  *
  * Domotz Agent is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation, either version 3 of the License, or
  * (at your option) any later version.
  *
  * Domotz Agent is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with Domotz Agent.  If not, see <http://www.gnu.org/licenses/>.
  **/
/**
 * Created by Tommaso Latini <tommaso@domotz.com> on 31/03/15.
 *
 */

var telnetSend = function (message, resourceLocator) {

    var telnet   = resourceLocator.telnet;
    var cmdUtils = resourceLocator.utils.command;

    var responseOut = "";
    var responseErr = "";

    var payload = message.payload;

    var host = payload.host;
    var port = payload.port;
    var command = payload.cmd;
    var onConnectCommand = payload.onConnectCommand;

    delete payload.onConnectCommand;
    delete payload.cmd;

    return {
        execute: function (callback) {

            var connection = new telnet();

            connection.connect(payload)
                .then(function() {
                    console.debug('Connection successful to %s:%d', host, port);
                    connection.exec(command);
                });

            connection.on('timeout', function() {
                connection.end();
            });

            connection.on("error", function(error) {
                responseErr = error;
                connection.end();
            });

            connection.telnetSocket.on('data', function(data) {
                responseOut += data.toString();
            });

            connection.on("connect", function() {
                if (onConnectCommand!=null){
                    connection.telnetSocket.write(onConnectCommand);
                }
            });

            connection.on('close', function() {
                console.debug('Received telnet response ' + responseOut);
                callback(cmdUtils.getResponse(responseOut, responseErr));
            });

        },
        describe: function () {
            return message.correlationId + " - telnetSend - " + host +
                ':' + port + ' - ' + command.length + ' bytes';
        }
    };
};

module.exports.command = telnetSend;