Slack OAuth2 strategy for Passport
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README.md

passport-slack

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

Updated to support Sign in with Slack by default.
Sign in with Slack

Notice

This repository is not getting the love it deserves. If you're interested in taking over maintenance or ownership of this repo and npm, please ask Slack to care about it.

Install

$ npm install passport-slack

Express Example

const {CLIENT_ID, CLIENT_SECRET, PORT} = process.env,
      SlackStrategy = require('passport-slack').Strategy,
      passport = require('passport'),
      express = require('express'),
      app = express();

// setup the strategy using defaults 
passport.use(new SlackStrategy({
    clientID: CLIENT_ID,
    clientSecret: CLIENT_SECRET
  }, (accessToken, refreshToken, profile, done) => {
    // optionally persist profile data
    done(null, profile);
  }
));

app.use(passport.initialize());
app.use(require('body-parser').urlencoded({ extended: true }));

// path to start the OAuth flow
app.get('/auth/slack', passport.authorize('slack'));

// OAuth callback url
app.get('/auth/slack/callback', 
  passport.authorize('slack', { failureRedirect: '/login' }),
  (req, res) => res.redirect('/')
);

app.listen(PORT);

Sample Profile

{
    "provider": "Slack",
    "id": "U123XXXXX",
    "displayName": "John Agan",
    "user": {
        "name": "John Agan",
        "id": "U123XXXXX",
        "email": "johnagan@testing.com",
        "image_24": "https://secure.gravatar.com/avatar/123abcd123bc12b3c.jpg?s=24&d=https%3A%2F%2Fa.slack-edge.com%2F66f9%2Fimg%2Favatars%2Fava_0000-24.png",
        "image_32": "https://secure.gravatar.com/avatar/123abcd123bc12b3c.jpg?s=32&d=https%3A%2F%2Fa.slack-edge.com%2F66f9%2Fimg%2Favatars%2Fava_0000-32.png",
        "image_48": "https://secure.gravatar.com/avatar/123abcd123bc12b3c.jpg?s=48&d=https%3A%2F%2Fa.slack-edge.com%2F66f9%2Fimg%2Favatars%2Fava_0000-48.png",
        "image_72": "https://secure.gravatar.com/avatar/123abcd123bc12b3c.jpg?s=72&d=https%3A%2F%2Fa.slack-edge.com%2F66f9%2Fimg%2Favatars%2Fava_0000-72.png",
        "image_192": "https://secure.gravatar.com/avatar/123abcd123bc12b3c.jpg?s=192&d=https%3A%2F%2Fa.slack-edge.com%2F7fa9%2Fimg%2Favatars%2Fava_0000-192.png",
        "image_512": "https://secure.gravatar.com/avatar/123abcd123bc12b3c.jpg?s=512&d=https%3A%2F%2Fa.slack-edge.com%2F7fa9%2Fimg%2Favatars%2Fava_0000-512.png"
    },
    "team": {
        "id": "T123XXXX",
        "name": "My Awesome Team",
        "domain": "my-awesome-team",
        "image_34": "https://a.slack-edge.com/0000/img/avatars-teams/ava_0000-00.png",
        "image_44": "https://a.slack-edge.com/00a0/img/avatars-teams/ava_0000-00.png",
        "image_68": "https://a.slack-edge.com/00a0/img/avatars-teams/ava_0000-00.png",
        "image_88": "https://a.slack-edge.com/00a0/img/avatars-teams/ava_0000-00.png",
        "image_102": "https://a.slack-edge.com/00a0/img/avatars-teams/ava_0000-000.png",
        "image_132": "https://a.slack-edge.com/00a0/img/avatars-teams/ava_0000-000.png",
        "image_230": "https://a.slack-edge.com/0a0a0/img/avatars-teams/ava_0000-000.png",
        "image_default": true
    }
}

Usage

Configure Strategy

The Slack authentication strategy authenticates users using a Slack 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 a client ID, client secret, and callback URL.

passport.use(new SlackStrategy({
    clientID: CLIENT_ID,
    clientSecret: CLIENT_SECRET,
    skipUserProfile: false, // default
    scope: ['identity.basic', 'identity.email', 'identity.avatar', 'identity.team'] // default
  },
  (accessToken, refreshToken, profile, done) => {
    // optionally persist user data into a database
    done(null, profile);
  }
));

Authenticate Requests

Use passport.authorize() (or passport.authenticate() if you want to authenticate with Slack and affect req.user and user session), specifying the 'slack' strategy, to authenticate requests.

For example, as route middleware in an Express application:

app.get('/auth/slack', passport.authorize('slack'));

app.get('/auth/slack/callback',
  passport.authorize('slack', { failureRedirect: '/login' }),
  (req, res) => res.redirect('/') // Successful authentication, redirect home.
);

Custom Scopes

By default passport-slack strategy will try to retrieve all user identity from Slack using the default scopes of identity.basic, identity.email, identity.avatar, and identity.team. To override these, set the scope parameter to an array of scopes.

passport.use(new SlackStrategy({
	clientID: CLIENT_ID,
	clientSecret: CLIENT_SECRET,
	scope: ['identity.basic', 'channels:read', 'chat:write:user']
}, () => { });

Ignore Profile Info

If you just need an access token and not user profile data, you can avoid getting profile info by setting skipUserProfile to true.

passport.use(new SlackStrategy({
	clientID: CLIENT_ID,
	clientSecret: CLIENT_SECRET,
	scope: ['incoming-webhook'],
	skipUserProfile: true
}, () => { });

Thanks

License

The MIT License

Copyright (c) 2014 Michael Pearson