passport-token-vkontakte

Passport strategy for authenticating with VK using the OAuth 2.0 API.

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

Install

$ npm install passport-token-vkontakte

Usage

Configure Strategy

The VK authentication strategy authenticates users using a VK account and OAuth 2.0 tokens. The strategy requires a verify callback, which accepts these credentials and calls done providing a user, as well as options specifying an app ID and app secret.

passport.use(new TokenVkontakteStrategy({
    clientID: VK_APP_ID,
    clientSecret: VK_APP_SECRET
  },
  function(accessToken, refreshToken, profile, done) {
    User.findOrCreate({ vkId: profile.id }, function (err, user) {
      return done(err, user);
    });
  }
));

Authenticate Requests

Use passport.authenticate(), specifying the 'token-vkontakte' strategy, to authenticate requests.

For example, as route middleware in an Express application:

app.get('/auth/token-vkontakte',
  passport.authenticate('token-vkontakte'),
  function(req, res) {
    // Successful authentication, redirect home.
    res.redirect('/');
  });

Profile Fields

The VK profile is very rich, and may contain a lot of information. The strategy can be configured with a profileFields parameter which specifies a list of fields (named by Portable Contacts convention) your application needs. For example, to fetch only user's VK ID, name, and picture, configure strategy like this.

passport.use(new TokenVkontakteStrategy({
    // clientID and clientSecret
    profileFields: ['id', 'displayName', 'photos']
  },
  // verify callback
));

If profileFields is not specified, the default fields supplied by VK will be parsed.