modi-cli/Login.js

Console application for provisioning, displaying or destroying virtual machines in MODI

var security = require('./Lib/CryptoLib.js');

var hidden = require('./Lib/HidePassword.js');

var definitions = require('./Lib/Define.js');

var httpntlm = require('httpntlm');

var fs = require('fs');

var readline = require('readline');

var rl_interface = readline.createInterface({
    input: process.stdin,
    output: process.stdout
});

var osversion = process.platform;

var homePath; 

var modiSettingsPath = '.modisettings';

switch(osversion) {
    case 'win32':
        homePath = process.env.USERPROFILE;
        modiSettingsPath = homePath + '\\.modisettings';        
        break;
    case 'linux':
        homePath = process.env.HOME;
        modiSettingsPath = homePath + '/.modisettings';
        break;
    case 'darwin':
        homePath = process.env.HOME;
        modiSettingsPath = homePath + '/.modisettings';
        break;
}


exports.login = function (callback, args1, args2, args3){  //there are 3 arguments for the Provsioning request: provrequestxml, machineName, saveCredentials
    
    rl_interface.question('Enter your domain name:', function (answerDomain) {
        
        rl_interface.question('Enter your user name:', function (answerUserName) {
        
            hidden(rl_interface, 'Enter your password: ', function (inputPassword) {
                
                //test the credentials before saving
                //web api call 

                if (callback == undefined) {
                    httpntlm.get({
                            url: definitions.testUrl,
                            username: answerUserName,
                            password: inputPassword,
                            workstation: '',
                            domain: answerDomain
                        },
                        function(err, res) {
                            if (err) {
                                process.stdout.write(''); //a control command.seems to cut some remaining text in the console
                                console.log('There was an authentication error. Error is ' + err);                           
                                deleteExistingLogin();
                                process.exit(0);
                            }

                            if (res != undefined
                                && res != null
                                && res.body != null
                                && res.body != undefined) {

                                if (res.body.indexOf(definitions.AccessDeniedMessage) > 0) {
                                    process.stdout.write(''); //a control command.seems to cut some remaining text in the console
                                    console.log(definitions.WrongCredentialsMessage);
                                    deleteExistingLogin();
                                    process.exit(0);
                                } else {
                                    storeExistingLogin(answerDomain, answerUserName, inputPassword);
                                    var loginData = [];
                                    loginData.UserName = answerUserName;
                                    loginData.Password = inputPassword;
                                    loginData.UserDomain = answerDomain;
                                    return loginData;
                                }
                            } 
                            else {
                                console.log(definitions.DefaultStatusErrorMessage);                            
                                deleteExistingLogin();
                                process.exit(0);
                            }   
                            });
                }
                else{
                    if (args1 == undefined) {

                        callback(answerUserName, inputPassword, answerDomain);

                    } else {

                        callback(answerUserName, inputPassword, answerDomain, args1, args2, args3);

                    }
                }
            });
        });
    });
}

exports.loadExistingLogin = function () {
    
    if (fs.existsSync(modiSettingsPath))
        {
            var encryptedLoginData = fs.readFileSync(modiSettingsPath).toString();        

            try {
                var jsonLoginData = security.Decrypt(encryptedLoginData); //Json format
            
                var loginData = JSON.parse(jsonLoginData);

                return loginData;

        } catch (e) {
                console.log('Unable to load the previously used credentials. Redirecting to login...');
                return null;
            }             
        }
        else return null;   
}

storeExistingLogin = function (userDomain, userName, password) {
    var jsonLoginData = { 'UserDomain': userDomain, 'UserName': userName, 'Password': password };
    
    var stringLoginData = JSON.stringify(jsonLoginData);
    
    var encryptedLoginData = security.Encrypt(stringLoginData);
    
    fs.writeFileSync(modiSettingsPath, encryptedLoginData);
};

exports.storeExistingLogin = storeExistingLogin;

deleteExistingLogin = function() {
    if (fs.existsSync(modiSettingsPath)) {
        fs.unlinkSync(modiSettingsPath);
    }
}