Develop Reference

Passport session doesn't retain after post

I'm new to Node.js app, and I writing authentication by passport. I can login and authentication routine works fine. However, after post, isAuthenticated() return false and redirect to index page. It seems like the user session is gone after doing post.
Could anybody tell me how to fix it? Here's my code.
app.js
var createError = require('http-errors');
var express = require('express');
const expressLayouts = require('express-ejs-layouts');
var path = require('path');
var logger = require('morgan');
var cookieParser = require('cookie-parser');
const bodyParser = require('body-parser');
var flash = require('connect-flash');
const session = require('express-session')
const passport = require('passport');
const LocalStrategy = require('passport-local').Strategy
var manageRouter = require('./routes/manage');
var app = express();
app.use(fileUpload());
// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'ejs');
app.use(logger('tiny'));
app.use(expressLayouts);
app.use(express.json());
app.use(express.urlencoded({ extended: false }));
app.use(express.static('public'));
app.use(flash());
app.use(cookieParser('remote_teach'));
app.use(bodyParser.json());
app.use(session({
secret: "remote_teach",
resave: true,
saveUninitialized: true,
cookie: {maxAge: 60 * 60 * 24 * 1000}
}));
app.use(passport.initialize());
app.use(passport.session());
app.use(function(req, res, next){
if (req.user && req.isAuthenticated()) {
res.locals["login"] = true;
}
return next();
});
app.use('/manage', manageRouter);
// catch 404 and forward to error handler
app.use(function(req, res, next) {
console.log("404");
next(createError(404));
});
module.exports = app;
route/manage.js
var express = require('express');
var router = express.Router();
var file_system = require('file-system');
var fs = require('fs');
const passport = require('passport');
const LocalStrategy = require('passport-local').Strategy;
const bcrypt = require('bcryptjs');
var md5 = require('md5');
const { encrypt, decrypt, randomString } = require('../crypto');
const db_configure = require('../configure');
var rootDirectory = 'public/data/';
// 資料庫
var mysql = require('mysql');
var connection = mysql.createConnection({
host : db_configure.db_host,
port : db_configure.db_port,
user : db_configure.db_user,
password : db_configure.db_pwd,
database : db_configure.db_name
});
// 顯示登入頁面
router.get('/login', function(req, res, next){
if (req.isAuthenticated()) {
res.redirect('/manage/index');
}else{
res.render('manage/login');
}
});
// Passport JS 登入驗證
passport.use(new LocalStrategy(
{
usernameField: 'email',
passwordField: 'password',
passReqToCallback: true
},
// Verify Callback
function(req, email, passwd, done) {
//verrify if the user is existed
})
);
passport.serializeUser(function(user, done) {
done(null, user.user_id)
});
passport.deserializeUser(function(id, done) {
//select user and deserialize
done(null, user);
});
router.post('/login', passport.authenticate('local', { successRedirect: '/manage',
failureRedirect: '/',
failureFlash: true})
);
router.post('/user/create', isAuthenticated, function(req, res, next){
var name = req.body.name;
var email = req.body.email;
var password = md5(req.body.password);
connection.query('INSERT INTO users (name, email, password) VALUES (?, ?, ?)',[name, email, password], function (error, results, fields){
if (error){
console.log(error);
}
res.redirect('/manage/users');
});
});
function isAuthenticated(req, res, next) {
if (req.user && req.isAuthenticated()) {
return next();
}
return res.redirect('/');
}
module.exports = router;

Node.js form validation gives Cannot read property 'profileimage' of undefined

I am trying to make a form in Node.js using Express by following a tutorial. I am writing the validation logic which should show error messages if the form
gets submitted empty, however instead of doing that it gives me this error on line 33 and I can't figure out why:
Cannot read property 'profileimage' of undefined
I debugged it but couldn't figure out what is causing this.
What am I doing wrong, how can I fix it?
Here is the form code:
var express = require('express');
var router = express.Router();
/* GET users listing. */
router.get('/', function(req, res, next) {
res.send('respond with a resource');
});
router.get('/register', function(req, res, next) {
res.render('register', {
'title': 'Register'
});
});
router.get('/login', function(req, res, next) {
res.render('login', {
'title': 'Log In'
});
});
router.post('/register', function(req, res, next) {
var name = req.body.name;
var email = req.body.email;
var username = req.body.username;
var password = req.body.password;
var password2 = req.body.password2;
// Check for Image Field
if(req.files.profileimage){
console.log('uploading File...');
// File Info
var profileImageOriginalName = req.files.profileimage.originalname;
var profileImageName = req.files.profileimage.name;
var profileImageMime = req.files.profileimage.mimetype;
var profileImagePath = req.files.profileimage.path;
var profileImageExt = req.files.profileimage.extension;
var profileImageSize = req.files.profileimage.size;
} else {
// Set a Default Image
var profileImageName = 'noimage.png';
}
// Form Validation
req.checkBody('name','Name field is required').notEmpty();
req.checkBody('email','Email field is required').notEmpty();
req.checkBody('email','Email not valid').isEmail();
req.checkBody('username','Username field is required').notEmpty();
req.checkBody('password','Password field is required').notEmpty();
req.checkBody('password2','Password do not match').equals(req.body.password);
// Check for errors
var errors = req.validationErrors();
if(errors){
res.render('register', {
errors: errors,
name: name,
email: email,
username: username,
password: password,
password2: password2
});
} else {
var newUser = new User({
name: name,
email: email,
username: username,
password: password,
profileImage: profileImageName
});
// Create User
User.createUser(newUser, function(err, user){
if(err)throw err;
console.log(user);
});
//Success Message
req.flash('success', 'You are now registered and may log in');
res.location('/');
res.redirect('/');
}
});
module.exports = router;
and my app.js:
var express = require('express');
var path = require('path');
var logger = require('morgan');
var expressValidator = require('express-validator');
var cookieParser = require('cookie-parser');
var session = require('express-session');
var passport = require('passport');
var LocalStrategy = require('passport-local').Strategy;
var bodyParser = require('body-parser');
var multer = require('multer');
var flash = require('connect-flash');
var mongo = require('mongodb');
var mongoose = require('mongoose');
var db = mongoose.connection;
var routes = require('./routes/index');
var users = require('./routes/users');
var app = express();
// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'jade');
// Handle file uploads
var multer = require('multer');
var upload = multer({ dest: './uploads' });
// uncomment after placing your favicon in /public
//app.use(favicon(path.join(__dirname, 'public', 'favicon.ico')));
app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
// Handle Express Sessions
app.use(session({
secret:'secret',
saveUninitialized: true,
resave: true
}));
// passport
app.use(passport.initialize());
app.use(passport.session());
// Validator
app.use(expressValidator({
errorFormatter: function(param, msg, value) {
var namespace = param.split('.')
, root = namespace.shift()
, formParam = root;
while(namespace.length) {
formParam += '[' + namespace.shift() + ']';
}
return {
param : formParam,
msg : msg,
value : value
};
}
}));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));
app.use(flash());
app.use(function (req, res, next) {
res.locals.messages = require('express-messages')(req, res);
next();
});
app.get('*', function(req, res, next){
res.locals.user = req.user || null;
next();
});
app.use('/', routes);
app.use('/users', users);
// 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 handlers
// development error handler
// will print stacktrace
if (app.get('env') === 'development') {
app.use(function(err, req, res, next) {
res.status(err.status || 500);
res.render('error', {
message: err.message,
error: err
});
});
}
// production error handler
// no stacktraces leaked to user
app.use(function(err, req, res, next) {
res.status(err.status || 500);
res.render('error', {
message: err.message,
error: {}
});
});
module.exports = app;

First of all files should be an array. If you are sure you send only one file try with this code block:
// Check for Image Field
if(req.files && req.files[0] && req.files[0].profileimage){
console.log('uploading File...');
// File Info
var profileImageOriginalName = req.files[0].profileimage.originalname;
var profileImageName = req.files[0].profileimage.name;
var profileImageMime = req.files[0].profileimage.mimetype;
var profileImagePath = req.files[0].profileimage.path;
var profileImageExt = req.files[0].profileimage.extension;
var profileImageSize = req.files[0].profileimage.size;
} else {
// Set a Default Image
var profileImageName = 'noimage.png';
}

You have the following line in your code:
if(req.files.profileimage){
when files is undefined, meaning, req does not have the property files (maybe a file was not sent on this request?), then trying to access anything within it will throw an error (and crash your node if you don't catch it)
So, first you should add type safety like so:
if(req.files && req.files.profileimage) {
or, even stricter, like so:
if(typeof req.files === 'object' && req.files.profileimage) {
(Note: you should do type safety test if and only if another part of your code has not already guaranteed that it is safe, e.g. a previous type safety test, or you assigned the property explicitly yourself in the code)
I also see that you are using multer to get a files object in your req object. Accroding to its docs, files can be an array, or an object of strings to arrays, From the "multer" npm page:
If used like so:
app.post('/photos/upload', upload.array('photos', 12), function (req, res, next) {
It will be an array:
req.files is array of photos files
req.body will contain the text fields, if there were any
Or, if used like so:
var cpUpload = upload.fields([{ name: 'avatar', maxCount: 1 }, { name: 'gallery', maxCount: 8 }])
app.post('/cool-profile', cpUpload, function (req, res, next) {
then it will be a (String -> Array) object:
req.files is an object (String -> Array) where fieldname is the key, and the value is array of files
e.g.
req.files['avatar'][0] -> File
req.files['gallery'] -> Array
So you should change your code accordingly. For example, if you choose the second method, you should change to the following:
if(typeof req.files === 'object' && req.files.profileimage) {
req.files.profileimage.forEach((profileimage) => {
//do anything you previously did on req.files.profileimage, on profileimage
let profileImageMime = profileimage.mimetype;
//... more things and code...
})
}

How do I pass data returned from a controller to Express' router?

I'm trying to make a catch-all of sorts to return data to my Author endpoint. If the url that is passed to the endpoint contains no query parameters, I want the router to return the full list of authors available. If the url contains firstName and lastName parameters, I want the controller to find the authors that match and, pass that data back to the router.
Currently if I send the urls http://localhost:3001/authors or http://localhost:3001/authors?firstName=tom&lastName=dooly, I get an error Error [ERR_HTTP_HEADERS_SENT]: Cannot set headers after they are sent to the client.
Can anyone tell me why this is happening and how to fix it?
main:
var express = require('express');
var path = require('path');
var favicon = require('serve-favicon');
var logger = require('morgan');
var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser');
var mongoose = require('mongoose');
var app = express();
var dev_db_url = 'mongodb://localhost:27017/'
var mongoDB = process.env.MONGODB_URI || dev_db_url;
mongoose.connect(dev_db_url);
mongoose.Promise = global.Promise;
var db = mongoose.connection;
db.on('error', console.error.bind(console, 'MongoDB connection error:'));
// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'jade');
// uncomment after placing your favicon in /public
//app.use(favicon(path.join(__dirname, 'public', 'favicon.ico')));
app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));
var index = require('./routes/index');
var users = require('./routes/users');
var feedEntries = require('./routes/feedEntries');
var authors = require('./routes/authors');
app.use('/', index);
app.use('/users', users);
app.use('/feedEntries', feedEntries);
app.use('/authors', authors);
// catch 404 and forward to error handler
app.use(function(req, res, next) {
var err = new Error('Not not Found');
err.status = 404;
next(err);
});
app.use(function(err, req, res, next) {
res.locals.message = err.message;
res.locals.error = req.app.get('env') === 'development' ? err : {};
res.status(err.status || 500);
res.render('error');
});
module.exports = app;
route:
var express = require('express');
var router = express.Router();
var authorController = require('../controllers/authorController');
authorController.findAuthorsByFirstAndLastName);
router.get('/', function (req, res) {
if(req.query.firstName||req.query.lastName) {
res.send(authorController.findAuthorsByFirstAndLastName(req,res));
}else{
res.send(authorController.author_list(req,res));
}
});
module.exports = router;
controller:
var Author = require('../models/author')
var async = require('async')
exports.author_list = function(req, res, next) {
Author.find({},function(err, authors) {
if (err){
res.send(err);
}
return.json(authors);
});
};
exports.findAuthorsByFirstAndLastName = function (req, res, next){
var query = {}
if(req.query.firstName||req.query.lastName) {
query = {$or:[{firstName:{$regex: req.query.firstName, $options: 'i'}},
{lastName:{$regex: req.query.lastName, $options: 'i'}}]}
}
else {
return res.status(500).send({ error: 'Unable to parse data'});
}
var firstName = req.body.firstName;
var lastName = req.body.lastName;
Author.find(query , function (err, authors) {
if(err) {
res.send(err);
}
res.json(authors);
});
};

You get cannot set headers after they are sent when you have two res.[whatever]s in your route. So you have res.send(functionCallThatAlsoDoesRes.Send). That's what's causing the error.
If you want a route to take multiple actions between the request and the response, you can write those as separate middlewares. Middlewares always take the arguments req, res, and next (a function that says to go to the next middleware in the list).
So, you might write:
authorController.findAuthorsByFirstAndLastName = function(req, res, next) {
if (!(req.query.firstName || req.query.lastName)) {
res.locals.getFullAuthorList = true
return next()
} else {
const query = /* whatever */
Author.find(query, (err, authors) => {
if (err) return next(err)
res.locals.authors = authors
next()
})
}
}
authorController.author_list = function(req, res, next) {
if (!res.locals.getFullAuthorList) return next() // if we already have authors we don't need to do anything
Author.find({}, (err, authors) => {
if (err) return next(err)
res.locals.authors = authors
next()
})
}
Then in your route, you'd say:
router.get('/', authorController.findAuthorsByFirstAndLastName, authorController.author_list, (req, res) => {
res.json({ authors: res.locals.authors })
})
If you haven't seen res.locals before, it's just a property on the response object that is available for you to attach things to. It persists throughout the request/response cycle and is cleared for each new request.

mongodb user profile trouble adding inputs

Iam trying to create a user profile in my mongo db. I already have a basic user registration /session, login/logout system. However I want to add more fields. For instance how would add a 'last name' or 'date of birth' to the below code?
index.js
var express = require('express');
var passport = require('passport');
var Account = require('../models/account');
var router = express.Router();
router.get('/', function (req, res) {
res.render('index', { user : req.user });
});
router.get('/register', function(req, res) {
res.render('register', { });
});
router.post('/register', function(req, res, next) {
console.log(req.body);
Account.register(new Account({ username : req.body.username, firstname: req.body.firstname }) req.body.password, function(err, account) {
if (err) {
return res.render("register", {info: "Sorry. That username already exists. Try again."});
}
passport.authenticate('local')(req, res, function () {
req.session.save(function (err) {
if (err) {
return next(err);
}
res.redirect('/');
});
});
});
});
router.get('/login', function(req, res) {
res.render('login', { user : req.user });
});
router.post('/login', passport.authenticate('local'), function(req, res, next) {
req.session.save(function (err) {
if (err) {
return next(err);
}
res.redirect('/');
});
});
router.get('/logout', function(req, res, next) {
req.logout();
req.session.save(function (err) {
if (err) {
return next(err);
}
res.redirect('/');
});
});
router.get('/ping', function(req, res){
res.status(200).send("pong!");
});
module.exports = router;
Account.js
var mongoose = require('mongoose');
var Schema = mongoose.Schema;
var passportLocalMongoose = require('passport-local-mongoose');
var Account = new Schema({
username: String,
password: String,
firstname: String
});
Account.plugin(passportLocalMongoose);
module.exports = mongoose.model('Account', Account);
Register.jade
extends layout
block content
.containerhome
h1 Register
.containerhomeborder
br
br
br
br
br
br
br
br
br
br
form(role='form', action="/register",method="post")
.form-group
input.form-control(type='text', name="username", placeholder='Enter Username')
.form-group
input.form-control(type='text', name="firstname", placeholder='First Name')
.form-group
input.form-control(type='password', name="password", placeholder='Password')
button.btn.btn-default(type='submit') Submit
a(href='/')
button.btn.btn-primary(type="button") Cancel
br
h4= info
app.js
var express = require('express');
var path = require('path');
var favicon = require('serve-favicon');
var logger = require('morgan');
var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser');
var routes = require('./routes/index');
var users = require('./routes/users');
var app = express();
var mongoose = require('mongoose');
var passport = require('passport');
var LocalStrategy = require('passport-local').Strategy
// dependencies
var express = require('express');
var path = require('path');
var favicon = require('serve-favicon');
var logger = require('morgan');
var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser');
var mongoose = require('mongoose');
var passport = require('passport');
var LocalStrategy = require('passport-local').Strategy;
var routes = require('./routes/index');
var users = require('./routes/users');
var app = express();
// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'jade');
// uncomment after placing your favicon in /public
//app.use(favicon(__dirname + '/public/favicon.ico'));
app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(require('express-session')({
secret: 'keyboard cat',
resave: false,
saveUninitialized: false
}));
app.use(passport.initialize());
app.use(passport.session());
app.use(express.static(path.join(__dirname, 'public')));
app.use('/', routes);
// passport config
var Account = require('./models/account');
passport.use(new LocalStrategy(Account.authenticate()));
passport.serializeUser(Account.serializeUser());
passport.deserializeUser(Account.deserializeUser());
// mongoose
mongoose.connect('mongodb://localhost/passport_local_mongoose_express4');
// 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 handlers
// development error handler
// will print stacktrace
if (app.get('env') === 'development') {
app.use(function(err, req, res, next) {
res.status(err.status || 500);
res.render('error', {
message: err.message,
error: err
});
});
}
// production error handler
// no stacktraces leaked to user
app.use(function(err, req, res, next) {
res.status(err.status || 500);
res.render('error', {
message: err.message,
error: {}
});
});
module.exports = app;
// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'jade');
// uncomment after placing your favicon in /public
//app.use(favicon(path.join(__dirname, 'public', 'favicon.ico')));
app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));
app.use('/', routes);
app.use('/users', users);
// 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 handlers
// development error handler
// will print stacktrace
if (app.get('env') === 'development') {
app.use(function(err, req, res, next) {
res.status(err.status || 500);
res.render('error', {
message: err.message,
error: err
});
});
}
// production error handler
// no stacktraces leaked to user
app.use(function(err, req, res, next) {
res.status(err.status || 500);
res.render('error', {
message: err.message,
error: {}
});
});
module.exports = app;
User.js
var express = require('express');
var router = express.Router();
/* GET users listing. */
router.get('/', function(req, res, next) {
res.send('respond with a resource');
});
module.exports = router;

In Account.js
var mongoose = require('mongoose');
var Schema = mongoose.Schema;
var passportLocalMongoose = require('passport-local-mongoose');
var Account = new Schema({
username: String,
password: String,
firstname: String,
lastname: String,
dob: Date
});
Account.plugin(passportLocalMongoose);
module.exports = mongoose.model('Account', Account);
And where you are adding the fields to the new model:
// ...
Account.register(new Account({
username :req.body.username,
firstname: req.body.firstname,
lastname: req.body.lastname,
dob: req.body.dob
}) req.body.password, function(err, account) {
// ...
I would highly suggest reading the mongoose documentation: http://mongoosejs.com/docs/schematypes.html
http://mongoosejs.com/docs/models.html

Session Node.js + Passport.js + Redis, Store session by user.id

When a user logs in a session is created for him, but if he were to go to another computer and login a 2nd session would be created for his account. I would like to make it so that a user could not have more then one valid session. Is there anyway to store sessions in redis by user.steamId so that his first session becomes invalid?
Any help would be great thanks!
app.js
var express = require('express'),
http = require('http');
var app = express();
var cookie = require('cookie');
var server = http.createServer(app);
var io = require('socket.io').listen(server);
var redis = require('redis');
var client = redis.createClient();
var session = require('express-session');
var redisStore = require('connect-redis')(session);
io.set('transports', ['websocket']);
var path = require('path');
var logger = require('morgan');
var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser');
var passport = require('passport');
const fs = require('fs');
require('./config/passport')(passport);
var sessionMiddleware = session({
store:new redisStore({host:'localhost',port:6379,client:client}),
secret:'secretTextchange',
saveUninitialized:false,
resave:false
});
// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'ejs');
// uncomment after placing your favicon in /public
//app.use(favicon(path.join(__dirname, 'public', 'favicon.ico')));
app.use(logger('dev'));
app.use(sessionMiddleware);
app.use(passport.initialize());
app.use(passport.session());
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));
require('./routes/routes')(app,passport,client);
// catch 404 and forward to error handler
app.use(function(req, res, next) {
var err = new Error('Not Found');
err.status = 404;
next(err);
});
io.use(function(socket, next) {
sessionMiddleware(socket.request, {}, next);
});
io.sockets.on('connection', function (socket) {
console.log("verified");
socket.on('message',function(msg){
io.sockets.emit('rmessage', {
name:socket.request.session.passport.user.name,
avatarUrl:socket.request.session.passport.user.avatarUrl,
message:msg
});
});
});
// error handlers
// development error handler
// will print stacktrace
if (app.get('env') === 'development') {
app.use(function(err, req, res, next) {
res.status(err.status || 500);
res.render('error', {
message: err.message,
error: err
});
});
}
// production error handler
// no stacktraces leaked to user
app.use(function(err, req, res, next) {
res.status(err.status || 500);
res.render('error', {
message: err.message,
error: {}
});
});
server.listen(3000);
module.exports = app;
passport.js
var OpenIDStrategy = require('passport-openid').Strategy;
var auth = require('./auth');
var steam = require('./steam');
var s = new steam({
apiKey: auth.Steam.apiKey,
format:'json'
})
module.exports = function(passport){
passport.serializeUser(function(user, done) {
done(null, user);
});
passport.deserializeUser(function(user, done) {
done(null,user);
});
var SteamStrategy = new OpenIDStrategy({
// OpenID provider configuration
providerURL: auth.Steam.providerUrl,
stateless: auth.Steam.stateless,
// How the OpenID provider should return the client to us
returnURL: auth.Steam.returnUrl,
realm: auth.Steam.realm,
},
function(identifier, done) {
process.nextTick(function () {
console.log("passport-"+identifier);
s.getPlayerSummaries({
steamids:identifier.match(/\d+$/)[0],
callback:function(err,data){
var user = {
steamid:identifier.match(/\d+$/)[0],
avatarUrl: data.response.players[0].avatar,
name:data.response.players[0].personaname
};
return done(null, user);
}
});
// In case of an error, we invoke done(err).
// If we cannot find or don't like the login attempt, we invoke
// done(null, false).
// If everything went fine, we invoke done(null, user).
});
});
passport.use(SteamStrategy);
}
routes.js
module.exports = function(app,passport,client){
app.get('/', function (req,res) {
res.render('index.ejs',{
user: req.user,
title:"yo"});
});
app.get('/auth',passport.authenticate('openid'));
app.get('/auth/return',passport.authenticate('openid'),function(req,res){
if (req.user) {
res.redirect('/');
} else {
res.redirect('/');
}
});
}

Could you use this: https://www.npmjs.com/package/redis-sessions ?
There's a method called soid which gets all sessions of a single id. You could query user's id as they log in. Then get all the sessions from that id. If soid returns empty you can safely assume the user had no sessions. If it returns with things inside it, then the user has sessions.
This is my best attempt right now.
Good luck.