hapi-access-token

hapi-access-token

hapi-access-token is a third-party login plugin for hapi. hapi-access-token comes with default support for Facebook. This was built with mobile apps in mind: mobile apps generally authenticate themselves with the installed app, and they simply receive an access token for future requests on the user's behalf.

Usage

Add a login endpoint and set it to use the hapi-access-token authentication strategy.

hapi-access-token does not maintain a session. Once the handler is called, the application must set its own session management.

var Hapi = require('hapi');
var Boom = require('boom');
var server = new Hapi.Server(8000);
 
// Register hapi-access-token with the server
server.register(require('hapi-access-token'), function (err) {
 
    // Declare an authentication strategy using the hapi-access-token scheme
    server.auth.strategy('facebook-access-token', 'access-token', {
        accessTokenKeyName: 'access_token', // The query parameter key you'll be specifying the access token in,
        profileUrl: 'https://graph.facebook.com/me?access_token=', // The url to get the user's profile,
        validateFunc: function(payload, accessToken, reply) { // The function which will extract the user profile and set it as the request's credentials
            try {
                var profile = JSON.parse(payload);
                var credentials = {};
                credentials.token = accessToken;
                credentials.profile = {
                    id: profile.id,
                    username: profile.username,
                    displayName: profile.name,
                    name: {
                        first: profile.first_name,
                        last: profile.last_name,
                        middle: profile.middle_name
                    },
                    email: profile.email,
                    raw: profile
                };
        
                return reply.continue(null, {credentials: credentials});
            } catch(err) {
                return reply(Boom.unauthorized(err.toString()));
            }
        }
    });
 
    server.route({
        method: ['GET'],
        path: '/login',   // The callback endpoint registered with the provider
        config: {
            auth: 'facebook-access-token',
            handler: function (request, reply) {
 
                // Perform any account lookup or registration, setup local session,
                // and redirect to the application. The third-party credentials are
                // stored in request.auth.credentials. Any query parameters from
                // the initial request are passed back via request.auth.credentials.query.
                return reply.redirect('/home');
            }
        }
    });
 
    server.start();
});

Options

The server.auth.strategy() method requires the following strategy options:

• accessTokenKeyName - The query parameter key you'll be specifying the access token in.
• profileUrl - The URL where the user account can be found
• validateFunc - The function which will parse out the user's profile with the parameters:
  • payload - The response payload from the profileUrl
  • accessToken - The original access token used for this request
  • reply - A Hapi authorization callback with any errors as the first parameter and the request.auth object as the second parameter