Passport-Stack-Exchange

Passport strategy for authenticating with Stack Exchange using the OAuth 2.0 API.

This module lets you authenticate using Stack Exchange in your Node.js applications. By plugging into Passport, Stackexchange authentication can be easily and unobtrusively integrated into any application or framework that supports Connect-style middleware, including Express.

Install

npm install passport-stack-exchange

Usage

Configure Strategy

The Stack Exchange authentication strategy authenticates users using a Stack Exchange account (Stack Overflow) and OAuth tokens. The strategy requires a verify callback, which accepts these credentials and calls done providing a user, as well as options specifying a consumer key, consumer secret, callback URL, and API key for Stackapps. Register the application on the service page.

var StackExchangeStrategy = require('passport-stack-exchange');

passport.use(new StackExchangeStrategy({
    clientID: STACKEXCHANGE_CLIENT_ID,
    clientSecret: STACKEXCHANGE_CLIENT_SECRET,
    callbackURL: 'http://127.0.0.1:3000/auth/stack-exchange/callback',
    stackAppsKey: STACKEXCHANGE_APPS_KEY,
    site: 'stackoverflow'
  },
  function(accessToken, refreshToken, profile, done) {
    User.findOrCreate({ stackexchangeId: profile.username }, function (err, user) {
      return done(err, user);
    });
  }
));

Authenticate Requests

Use passport.authenticate(), specifying the 'stack-exchange' strategy, to authenticate requests.

For example, as route middleware in an Express application:

app.get('/auth/stack-exchange',
  passport.authenticate('stack-exchange'));

app.get('/auth/stack-exchange/callback',
  passport.authenticate('stack-exchange', { failureRedirect: '/login' }),
  function(req, res) {
    // Successful authentication, redirect home.
    res.redirect('/');
  });

Examples

For a complete, working example, refer to the login example.

Credits

License

The MIT License

Copyright (c) 2015 Moo Yeol, Lee (Prescott)

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