I'm using express framework , Lets say I have this line in the API :
router.delete('/user',(req, res) => { //deleting...}
Now I want that only an Admin will be able to access this line.
In the rest of the code there are lines that only user can access like :
router.put('/post')
And lines only admin can access like:
router.put('/killDB)
what is the best way (tokens, sessions or something like that) that will be able to help me differenitate between the two?
Use password to authenticate users and then check if the user is an admin. And then simply add password logic to your route. Below I will provide my code where I just check if user is logged in (it was enough for me)
router.get('/delete', isLoggedIn, function (req, res) {
Page.collection.drop();
var page = new Page();
page.save(function (err) {
if(err) throw err;
res.redirect('/admin');
});
});
// render login form
router.get('/login', function (req, res) {
res.render('login',{ message: req.flash('error'), layout: null});
});
// process the login form
router.post('/login', passport.authenticate('local-login', {
successRedirect : '/admin', // redirect to the secure profile section
failureRedirect : '/login', // redirect back to the signup page if there is an error
failureFlash : true // allow flash messages
}));
router.get('/logout', function(req, res) {
req.logout();
res.redirect('/');
});
function isLoggedIn(req, res, next) {
// if user is authenticated in the session, carry on
if (req.isAuthenticated())
return next();
// if they aren't redirect them to the home page
res.redirect('/');
}
You can use the connect-roles package to authorize your users, and then route them to those URL's which they are allowed to access.
You can also opt for passport.js, however it is more or like a authentication package where as the connect-roles just aims at to provide only the "authorization" part. And this package works well with Express.
Once you implement this package, you can use the "role" attribute to check the user's authorization level and allow them to perform their respective actions.
For eg.,
if (req.user.role === 'admin') {
router.put('/killDB)
}
You can check out the package here: https://www.npmjs.com/package/connect-roles
Hope this helps!
When I login with Google using PassportJS and passport-google-oauth20, my application completes the request successfully, but Passport does not recognize this and calls an error instead.
My code looks like this:
router.get('/auth/google/callback',
passport.authenticate('google', {failureRedirect: '/login'}),
(req, res) => console.log(req),
(err, req, res, next) => {
console.log('test point 1')
console.log(err.stack)
return res.status(500).send(err)
})
The output looks like this, indicating that the request did fail I believe:
test point 1
undefined
But when I check my browser, it returned a 500 code with the correct Google user information, such as the profile picture and ID. Passport does not store this in the req.user variable that it should either. Thanks!
If it's useful, my passport initialization is pretty simple and clear:
// TODO: eventually setup user account system
passport.serializeUser((user, done) => done(null, user))
passport.deserializeUser((obj, done) => done(null, obj))
// TODO: eventually use this to associate the users account
passport.use(new GoogleStrategy({
callbackURL: 'http://localhost:8080/api/v0/auth/google/callback',
clientID: 'number-id.apps.googleusercontent.com',
clientSecret: 'secrets'
}, (accessToken, refreshToken, profile, cb) => {
cb(profile)
}))
The only thing I can think of that would be different about my situation is that I'm only useing passport on a specific set of routes. (e.g. the API)
On this line: cb(profile) I was sending an error to the callback instead of the user profile.
It should be this: cb(null, profile).
I just want to link twitter account after there is still user.
Firstly i have a router.js like that
// GET Registration Page
router.get('/signup', function(req, res){
res.render('register',{noty: req.flash('message')});
});
// Handle Registration POST
router.post('/signup', passport.authenticate('signup', {
successRedirect: '/connect_twitter',
failureRedirect: '/signup',
failureFlash : true
}));
/* GET Twitter Auth*/
router.get('/login/twitter', passport.authenticate('twitter'));
router.get('/login/twitter/return',
passport.authenticate('twitter', { failureRedirect: '/' }),
function(req, res) {
res.redirect('/home');
});
if its success, i redirected "/connect_twitter" with req.user != null
, that is current user. In the "/connect_twitter" a redirect twitter with a button.
When twitter return user's tokens, i use this strategy
passport.use(new TwitterStrategy({
consumerKey: config.twitter.consumer_key,
consumerSecret: config.twitter.consumer_secret,
callbackURL: config.tw_callback
},
function(token, tokenSecret, profile, cb) {
// In this example, the user's Twitter profile is supplied as the user
// record. In a production-quality application, the Twitter profile should
console.log(profile);
findOrCreateUser = function(){
// find a user in Mongo with provided username
User.findOne({'tw_user_id': profile.id}, function(err, user) {
// In case of any error, return using the done method
if (err){
return cb(err);
}
// already exists
if (user) {
user.tw_token = token;
user.tw_token_secret = tokenSecret;
user.save(function(err){
if (err) {
throw err;
}
console.log("User Updating successfull !");
})
return cb(null, user);
} else {
// create the user
var newUser = new User();
// set the user's local credentials
newUser.password = createHash(token);
newUser.username = profile.username;
newUser.email = null;
newUser.tw_token = token;
newUser.tw_user_id = profile.id;
newUser.tw_token_secret = tokenSecret;
// save the user
newUser.save(function(err) {
if (err){
console.log('Error in Saving user: '+err);
throw err;
}
console.log('User Registration succesful');
return cb(null, newUser);
});
}
});
};
process.nextTick(findOrCreateUser);
}));
The problem is how to access current_user or anything about the current user in this function function(token, tokenSecret, profile, cb)?
As i think, If i access that, i linked current user with these tokens.
Or
Is there better (any) way to link twitter with the current user ?
Thanks in advance..
In the passportjs docs
Association in Verify Callback
One downside to the approach described above is that it requires two instances of the same strategy and supporting routes.
To avoid this, set the strategy's passReqToCallback option to true. With this option enabled, req will be passed as the first argument to the verify callback.
passport.use(new TwitterStrategy({
consumerKey: TWITTER_CONSUMER_KEY,
consumerSecret: TWITTER_CONSUMER_SECRET,
callbackURL: "http://www.example.com/auth/twitter/callback",
passReqToCallback: true
},
function(req, token, tokenSecret, profile, done) {
if (!req.user) {
// Not logged-in. Authenticate based on Twitter account.
} else {
// Logged in. Associate Twitter account with user. Preserve the login
// state by supplying the existing user after association.
// return done(null, req.user);
}
}
));
With req passed as an argument, the verify callback can use the state of the request to tailor the authentication process, handling both authentication and authorization using a single strategy instance and set of routes. For example, if a user is already logged in, the newly "connected" account can be associated. Any additional application-specific properties set on req, including req.session, can be used as well.
By the way, you can handle with the current user and its data to link any social strategy including Twitter.
You can do that in 2 ways:
Instead of trying to get req.user inside Twitter Strategy, you can get user email fetched from twitter response and match it with user with same email inside database. Normally, you cannot get email directly from Twitter API, you need to fill request form here to get elevated access. After request accepted, you will be able to get email from Twitter API.
After twitter login, you can save user twitter profile information inside a temp table and redirect a page like /user/do_login?twitter_profile_id=<user_twitter_profile_id_fetched_from_twitter_response>. When you redirect to /user/do_login you will be able to access req.user and also you will have user profile id. In this action, you can grab user profile info from temp table and merge it with req.user. By the way, I assume that, you are using stored session.
I am using PassportJS with Node and Express. I am doing so in a native iOS application. When I launch the API based authentication through Node to Facebook, I get a redirect URL to Facebook, and when I try loading that into a web-view I get an error saying "The redirect_uri URL must be absolute."
This project does not have a website, it's only an app so I'm specifying the deep link in the call-back URL
//setup facebook authentication
passport.use(new FacebookStrategy({
clientID: "13434543",
clientSecret: "fdaf323432fadfa134",
callbackURL: "sixdwf://deeplink?facebook=/auth/facebook/callback"
},
function(accessToken, refreshToken, profile, done) {
User.findOrCreate(accessToken, refreshToken, profile, done, function(err, user) {
if (err) { return done(err); }
done(null, user);
});
}
));
// Redirect the user to Facebook for authentication. When complete,
// Facebook will redirect the user back to the application at
// /auth/facebook/callback
app.get('/auth/facebook', passport.authenticate('facebook', { scope: ['public_profile', 'email' , 'user_friends'] }));
// Facebook will redirect the user to this URL after approval. Finish the
// authentication process by attempting to obtain an access token. If
// access was granted, the user will be logged in. Otherwise,
// authentication has failed.
app.get('/auth/facebook/callback',
passport.authenticate('facebook', { successRedirect: '/',
failureRedirect: '/login' }));
// app.post("/account/login", function(req,res)
// {
// actMgr.handleLogin(req,res);
// });
Any idea how to get past this?
give the absolute callback URL something like
www.mytestOauth.com/auth/twitter/callback
insted of
sixdwf://deeplink?facebook=/auth/facebook/callback
i also faced the same issue , it works
I am having trouble getting my system to log out with PassportJS. It seems the logout route is being called, but its not removing the session. I want it to return 401, if the user is not logged in in specific route. I call authenticateUser to check if user is logged in.
Thanks a lot!
/******* This in index.js *********/
// setup passport for username & passport authentication
adminToolsSetup.setup(passport);
// admin tool login/logout logic
app.post("/adminTool/login",
passport.authenticate('local', {
successRedirect: '/adminTool/index.html',
failureRedirect: '/',
failureFlash: false })
);
app.get('/adminTool/logout', adminToolsSetup.authenticateUser, function(req, res){
console.log("logging out");
console.log(res.user);
req.logout();
res.redirect('/');
});
// ******* This is in adminToolSetup ********
// Setting up user authentication to be using user name and passport as authentication method,
// this function will fetch the user information from the user name, and compare the password for authentication
exports.setup = function(passport) {
setupLocalStrategy(passport);
setupSerialization(passport);
}
function setupLocalStrategy(passport) {
passport.use(new LocalStrategy(
function(username, password, done) {
console.log('validating user login');
dao.retrieveAdminbyName(username, function(err, user) {
if (err) { return done(err); }
if (!user) {
return done(null, false, { message: 'Incorrect username.' });
}
// has password then compare password
var hashedPassword = crypto.createHash('md5').update(password).digest("hex");
if (user.adminPassword != hashedPassword) {
console.log('incorrect password');
return done(null, false, { message: 'Incorrect password.' });
}
console.log('user validated');
return done(null, user);
});
}
));
}
function setupSerialization(passport) {
// serialization
passport.serializeUser(function(user, done) {
console.log("serialize user");
done(null, user.adminId);
});
// de-serialization
passport.deserializeUser(function(id, done) {
dao.retrieveUserById(id, function(err, user) {
console.log("de-serialize user");
done(err, user);
});
});
}
// authenticating the user as needed
exports.authenticateUser = function(req, res, next) {
console.log(req.user);
if (!req.user) {
return res.send("401 unauthorized", 401);
}
next();
}
Brice’s answer is great, but I still noticed an important distinction to make; the Passport guide suggests using .logout() (also aliased as .logOut()) as such:
app.get('/logout', function(req, res){
req.logout();
res.redirect('/'); //Can fire before session is destroyed?
});
But as mentioned above, this is unreliable. I found it behaved as expected when implementing Brice’s suggestion like this:
app.get('/logout', function (req, res){
req.session.destroy(function (err) {
res.redirect('/'); //Inside a callback… bulletproof!
});
});
Hope this helps!
Ran into the same issue. Using req.session.destroy(); instead of req.logout(); works, but I don't know if this is the best practice.
session.destroy may be insufficient, to make sure the user is fully logged out you have to clear session cookie as well.
The issue here is that if your application is also used as an API for a single page app (not recommended but quite common) then there can be some request(s) being processed by express that started before logout and end after logout. If this were the case then this longer running request will restore the session in redis after it was deleted. And because the browser still has the same cookie the next time you open the page you will be successfully logged in.
req.session.destroy(function() {
res.clearCookie('connect.sid');
res.redirect('/');
});
That's the what maybe happening otherwise:
Req 1 (any request) is received
Req 1 loads session from redis to memory
Logout req received
Logout req loads session
Logout req destroys session
Logout req sends redirect to the browser (cookie is not removed)
Req 1 completes processing
Req 1 saves the session from memory to redis
User opens the page without login dialog because both the cookie and the session are in place
Ideally you need to use token authentication for api calls and only use sessions in web app that only loads pages, but even if your web app is only used to obtain api tokens this race condition is still possible.
I was having the same issue, and it turned out to not be a problem with Passport functions at all, but rather in the way I was calling my /logout route. I used fetch to call the route:
(Bad)
fetch('/auth/logout')
.then([other stuff]);
Turns out doing that doesn't send cookies so the session isn't continued and I guess the res.logout() gets applied to a different session? At any rate, doing the following fixes it right up:
(Good)
fetch('/auth/logout', { credentials: 'same-origin' })
.then([other stuff]);
I was having the same issues, capital O fixed it;
app.get('/logout', function (req, res){
req.logOut() // <-- not req.logout();
res.redirect('/')
});
Edit: this is no longer an issue.
I used both req.logout() and req.session.destroy() and works fine.
server.get('/logout', (req, res) => {
req.logout();
req.session.destroy(()=>{
res.redirect('/');
});
});
Just to mention, i use Redis as session store.
I was recently having this same issue and none of the answers fixed the issue for me. Could be wrong but it does seem to have to do with a race condition.
Changing the session details to the options below seems to have fixed the issue for me. I have tested it about 10 times or so now and everything seems to be working correctly.
app.use(session({
secret: 'secret',
saveUninitialized: false,
resave: false
}));
Basically I just changed saveUninitialized and resave from true to false. That seems to have fixed the issue.
Just for reference I'm using the standard req.logout(); method in my logout path. I'm not using the session destroy like other people have mentioned.
app.get('/logout', function(req, res) {
req.logout();
res.redirect('/');
});
None of the answers worked for me so I will share mine
app.use(session({
secret: 'some_secret',
resave: false,
saveUninitialized: false,
cookie: {maxAge: 1000} // this is the key
}))
and
router.get('/logout', (req, res, next) => {
req.logOut()
req.redirect('/')
})
Destroying session by yourself looks weird.
I faced with this issue having next configuration:
"express": "^4.12.3",
"passport": "^0.2.1",
"passport-local": "^1.0.0",
I should say that this configuration works well.
The reason of my issue was in custom sessionStore that I defined here:
app.use(expressSession({
...
store: dbSessionStore,
...
}));
To be sure that your issue here too just comment store line and run without session persisting. If it will work you should dig into your custom session store. In my case set method was defined wrong. When you use req.logout() session store destroy() method not invoked as I thought before. Instead invoked set method with updated session.
Good luck, I hope this answer will help you.
I got an experience that, sometime it's doesn't work because you fail to to setup passport properly.
For example, I do vhost, but on main app I setup passport like this which is wrong.
app.js (why wrong ? please see blockqoute below)
require('./modules/middleware.bodyparser')(app);
require('./modules/middleware.passport')(app);
require('./modules/middleware.session')(app);
require('./modules/app.config.default.js')(app, express);
// default router across domain
app.use('/login', require('./controllers/loginController'));
app.get('/logout', function (req, res) {
req.logout();
res.redirect('/');
});
// vhost setup
app.use(vhost('sub1.somehost.dev', require('./app.host.sub1.js')));
app.use(vhost('somehost.dev', require('./app.host.main.js')));
actually, it must not be able to login, but I manage to do that because, I continue to do more mistake. by putting another passport setup here, so session form app.js available to app.host.sub1.js
app.host.sub1.js
// default app configuration
require('./modules/middleware.passport')(app);
require('./modules/app.config.default.js')(app, express);
So, when I want to logout... it's not work because app.js was do something wrong by start initialize passport.js before express-session.js, which is wrong !!.
However, this code can solved the issues anyway as others mention.
app.js
app.get('/logout', function (req, res) {
req.logout();
req.session.destroy(function (err) {
if (err) {
return next(err);
}
// destroy session data
req.session = null;
// redirect to homepage
res.redirect('/');
});
});
But in my case the correct way is... swap the express-session.js before passport.js
document also mention
Note that enabling session support is entirely optional, though it is
recommended for most applications. If enabled, be sure to use
express.session() before passport.session() to ensure that the login
session is restored in the correct order.
So, resolved logout issue on my case by..
app.js
require('./modules/middleware.bodyparser')(app);
require('./modules/middleware.session')(app);
require('./modules/middleware.passport')(app);
require('./modules/app.config.default.js')(app, express);
// default router across domain
app.use('/login', require('./controllers/loginController'));
app.get('/logout', function (req, res) {
req.logout();
res.redirect('/');
});
app.host.sub1.js
// default app configuration
require('./modules/app.config.default.js')(app, express);
and now req.logout(); is work now.
Apparently there are multiple possible causes of this issue. In my case the problem was wrong order of declarations i.e. the logout endpoint was declared before passport initialization. The right order is:
app.use(passport.initialize());
app.use(passport.session());
app.get('/logout', function(req, res) {
req.logout();
res.redirect('/');
});
simply adding req.logOut(); solved this issue ; "O" should be capitalized
I was having the same issue. Turned out that my version of passport wasn't compatible with Express 4.0. Just need to install an older version.
npm install --save express#3.0.0
This worked for me:
app.get('/user', restrictRoute, function (req, res) {
res.header('Cache-Control', 'no-cache, private, no-store, must-revalidate,
max-stale=0, post-check=0, pre-check=0');
});
It makes sure that your page won't get stored in cache
I'm working with a programmer, that suggests to remove user of req:
app.get('/logout', function (req, res){
req.session.destroy(function (err) {
req.user = null;
res.redirect('/'); //Inside a callback… bulletproof!
});
});
Reason:
we need to remove from req(passportjs also doing this but async way) because there is no use of user data after logout
even this will save memory and also might be passportjs found user data and may create new session and redirect(but not yet happen)
By the ways, this is our responsibility to remove irrelevant thing. PassportJS assign data into req.user after login and also remove if we use req.logout() but it may not works properly some times as NodeJS Asynchronous in nature
I faced the similar problem with Passport 0.3.2.
When I use Custom Callback for the passport login and signup the problem persisted.
The problem was solved by upgrading to Passport 0.4.0 and adding the lines
app.get('/logout', function(req, res) {
req.logOut();
res.redirect('/');
});
Since you are using passport authentication which uses it's own session via the connect.sid cookie this simplest way of dealing with logging out is letting passport handle the session.
app.get('/logout', function(req, res){
if (req.isAuthenticated()) {
req.logOut()
return res.redirect('/') // Handle valid logout
}
return res.status(401) // Handle unauthenticated response
})
All examples here do a redirect after the req.session.destroy.
But do realise that Express will create a new session instantly for the page you are redirecting to.
In combination with Postman I found the strange behaviour that doing a Passport-Login right after the logout gives the effect that Passport is successful but cannot store the user id to the session file. The reason is that Postman needs to update the cookie in all requests for this group, and this takes a while.
Also the redirect in the callback of the destroy does not help.
I solved it by not doing a redirect but just returning a json message.
This is still an issue.
What I did was to use req.session.destroy(function (err) {}); on the server side and on the client side, whenever they logout:
const logout = () => {
const url = '/users/logout'
fetch(url)
setTimeout(function () {
location.reload(); }, 500);
That way, when refreshing the page, the user is without session. Just make sure you are redirecting to the correct page if no one is authenticated.
Not the best approach, perhaps, but it works.
You can try manually regenerating the session:
app.get('/logout', (req, res) => {
req.logOut();
req.session.regenerate(err => {
err && console.log(err);
});
res.redirect('/');
});
This does not remove other data (like passport) from the session.
Try this
app.get('/logout', (req, res) => {
req.logout();
req.session.destroy();
res.redirect('/');
}
I solved this problem by setting the withCredentials: true on my axios.post request to the logout route. I guess the required credentials to identify the session weren't being sent over so the req.logOut() had no effect (I also noticed that req.user was undefined on the log out route, which was a big clue)
I managed to resolve a similar problem by changing the code in my client where I made the request, replacing the following:
const res = await axios.get("http://localhost:4000/auth/logout");
with this:
window.open("http://localhost:4000/auth/logout", "_self");
For me req.logout worked but I don't why req.logout() not working. How function call is not working
I do this
window.open(http://localhost:4000/auth/logout, "_self");
in the function before window.open call to e.preventDefault()
this is recommended because when you do click in log out Button you refresh the page, and the function isn't call it
function logout(e) {
e.preventDefault()
window.open(http://localhost:4000/auth/logout, "_self");
}
3 January 2022
You shoulde be using req.logout() to destroy the session in the browser.
app.get('/logout', function(req, res) {
req.logout();
res.redirect('/'); // whatever the route to your default page is
});
I don't know how but ng-href="/signout" solved my problem. Previously I have used service to logout, but instead I've used it directly.
In my case, using a callback passed to req.session.destroy helped only some of the time and I had to resort to this hack:
req.session.destroy();
setTimeout(function() {
res.redirect "/";
}, 2000);
I don't know why that's the only solution that I've been able to get to work, but unfortunately #JulianLloyd's answer did not work for me consistently.
It may have something to do with the fact that my live login page uses SSL (I haven't been able to reproduce the issue on the staging site or my localhost). There may be something else going on in my app too; I'm using the derby-passport module since my app is using the Derby framework, so it's difficult to isolate the problem.
It's clearly a timing issue because I first tried a timeout of 100 ms, which wasn't sufficient.
Unfortunately I haven't yet found a better solution.