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app.js
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var express = require('express');
var path = require('path');
var favicon = require('serve-favicon');
var logger = require('morgan');
var bodyParser = require('body-parser');
var mongoose = require('mongoose');
var passport = require('passport');
var LocalStrategy = require('passport-local').Strategy;
var helmet = require('helmet');
var redis = require('redis');
var session = require('express-session');
// https://github.com/tj/connect-redis
var RedisStore = require('connect-redis')(session);
/////////////////
// required for socket.io to use passport's authentication
// see the following website for information about this
// https://www.codementor.io/tips/0217388244/sharing-passport-js-sessions-with-both-express-and-socket-io
// don't confuse this with passport.socket.io, which is wrong!
// https://www.npmjs.com/package/passport.socketio
// https://github.com/jfromaniello/passport.socketio
var passportSocketIo = require('passport.socketio');
var cookieParser = require('cookie-parser');
// https://www.npmjs.com/package/connect-redis
// start redis and create the redis store
// https://github.com/tj/connect-redis/blob/master/migration-to-v4.md
// No password, so removed this line for now.
// password: 'my secret',
let redisClient = redis.createClient({
host: 'localhost',
port: 6379,
db: 1,
});
redisClient.unref();
redisClient.on('error', console.log);
let sessionStore = new RedisStore({ client: redisClient });
/////////////////
mongoose.Promise = global.Promise;
console.log('start mongoose');
mongoose.connect('mongodb://localhost/node-auth', {useNewUrlParser: true, useUnifiedTopology: true})
.then(() => console.log('connection successful'))
.catch((err) => console.error(err));
var index = require('./routes/index');
var app = express();
/*
// "Helmet helps you secure your Express apps by setting various HTTP headers."
console.log('use helmet');
app.use(helmet());
var use_content_security_policy = true;
// NOTE: operator.html has its own CSP rules that override what is set here
if (use_content_security_policy) {
console.log('using a content security policy');
app.use(helmet.contentSecurityPolicy({
directives: {
defaultSrc:["'self'"],
scriptSrc:["'self'", "'unsafe-inline'",
'static.robotwebtools.org',
'robotwebtools.org',
'webrtc.github.io',
'www.gstatic.com',
'code.jquery.com',
'cdnjs.cloudflare.com',
'stackpath.bootstrapcdn.com',
'cdn.jsdelivr.net',
'*.firebaseio.com',
'https://apis.google.com/'],
connectSrc:["'self'",
'ws://localhost:9090',
'wss://localhost:9090',
'https://securetoken.googleapis.com',
'https://www.googleapis.com',
'wss:\/\/*.firebaseio.com'],
imgSrc: ["'self'", 'data:'],
styleSrc:["'self'",
'stackpath.bootstrapcdn.com'],
fontSrc:["'self'"],
frameSrc: ['*.firebaseio.com', 'https://stretchteleop.firebaseapp.com/']}
})
);
} else {
// Disable the content security policy. This is helpful during
// development, but risky when deployed.
console.log('WARNING: Not using a content security policy. This risky when deployed!');
app.use(
helmet({
contentSecurityPolicy: false,
})
);
}
*/
/////////////////////////
//
// Only allow use of HTTPS and redirect HTTP requests to HTTPS
//
// code derived from
// https://stackoverflow.com/questions/24015292/express-4-x-redirect-http-to-https
console.log('require https');
app.all('*', ensureSecure); // at top of routing calls
function ensureSecure(req, res, next){
if(!req.secure){
// handle port numbers if you need non defaults
res.redirect('https://' + req.hostname + req.url);
}
return next();
};
/////////////////////////
// view engine setup
console.log('set up the view engine');
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'pug');
app.use(favicon(path.join(__dirname, 'src', 'assets', 'favicon.ico')));
app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
var secret_string = 'you should change this secret string';
app.use(session({
secret: secret_string,
store: sessionStore,
resave: false,
saveUninitialized: false,
cookie: {
secure: true,
sameSite: true
}
}));
//var RedisStore = require('connect-redis')(session);
// set up passport for user authorization (logging in, etc.)
console.log('set up passport');
app.use(passport.initialize());
app.use(passport.session());
// Let requests go through app auth and routing first
app.use('/', index);
// Try to serve static files if the app lets the request through
app.use('/', express.static(path.join(__dirname, 'dist')));
// passport configuration
console.log('configure passport');
var User = require('./models/User');
passport.use(new LocalStrategy(User.authenticate()));
passport.serializeUser(User.serializeUser());
passport.deserializeUser(User.deserializeUser());
console.log('set up error handling');
// catch 404 and forward to error handler
app.use(function(req, res, next) {
var err = new Error('Not Found');
err.status = 404;
next(err);
});
// error handler
app.use(function(err, req, res, next) {
// set locals, only providing error in development
res.locals.message = err.message;
res.locals.error = req.app.get('env') === 'development' ? err : {};
// render the error page
res.status(err.status || 500);
res.render('error');
});
//////////////////////////////////////////////////////////
// check if user is an approved and logged-in robot
function isRobot(data) {
return (data.user &&
data.user.logged_in &&
data.user.approved &&
(data.user.role === 'robot'));
};
// check if user is an approved and logged-in operator
function isOperator(data) {
return (data.user &&
data.user.logged_in &&
data.user.approved &&
(data.user.role === 'operator'));
};
// based on passport.socketio documentation
// https://github.com/jfromaniello/passport.socketio
function onAuthorizeSuccess(data, accept){
console.log('');
console.log('successful connection to socket.io');
console.log('data.user =');
console.log(data.user);
if(isRobot(data) || isOperator(data)) {
console.log('connection authorized!');
accept();
} else {
console.log('connection attempt from unauthorized source!');
// reject connection (for whatever reason)
accept(new Error('not authorized'));
}
}
function onAuthorizeFail(data, message, error, accept){
console.log('');
console.log('#######################################################');
console.log('failed connection to socket.io:', message);
console.log('data.headers =');
console.log(data.headers);
// console.log('message =');
// console.log(message);
// console.log('error =');
// console.log(error);
// console.log('accept =');
// console.log(accept);
console.log('#######################################################');
console.log('');
// error indicates whether the fail is due to an error or just an unauthorized client
if(error) throw new Error(message);
// send the (not-fatal) error-message to the client and deny the connection
//return accept(new Error(message));
return accept(new Error("You are not authorized to connect."));
}
ioauth = passportSocketIo.authorize({
key: 'connect.sid',
secret: secret_string,
store: sessionStore,
cookieParser: cookieParser,
success: onAuthorizeSuccess,
fail: onAuthorizeFail
});
module.exports = {
app: app,
ioauth: ioauth
};