Twitter per-user permissions

twitter_permissions_per_user.js

/*
 * Simple example that shows how to set the requested Twitter access
 * permissions on a per-user basis.
 *
 * For example, this is useful if you only require Direct Message permissions
 * from a few users and simple read access for the rest.
 *
 * 1. Set up your application to request R/W/DM by default in
 *    the app settings (https://dev.twitter.com/apps/)
 * 2. Set the OAUTH_KEY and OAUTH_SECRET environment variables and start this server.
 * 3. Go to http://localhost:1337/auth. Use '?scope=read' or '?scope=write' to
 *    limit the requested access level.
 * 4. Follow @niscr (http://nisc.me)!
 */

var KEY = process.env.OAUTH_KEY;
var SECRET = process.env.OAUTH_SECRET;

var REQUEST_URL = 'https://api.twitter.com/oauth/request_token';
var TOKEN_URL = 'https://api.twitter.com/oauth/access_token';
var REDIRECT_URL = 'http://localhost/';

var express = require('express')
  , OAuth = require('oauth').OAuth
  , app = express.createServer();

app.get('/auth', function(req, res){
  var scope = req.query.scope || '';
  var oa = new OAuth(
    REQUEST_URL+'?x_auth_access_type='+scope, TOKEN_URL,
    KEY, SECRET, '1.0', REDIRECT_URL, 'HMAC-SHA1'
  );

  oa.getOAuthRequestToken(function(error, oauth_token, oauth_token_secret, results){
    if (error) {
      console.log(error);
      res.send('fail');
    }
    else {
      console.log('oauth_token: ' + oauth_token);
      console.log('oauth_token_secret: ' + oauth_token_secret);
      res.redirect('https://twitter.com/oauth/authorize?oauth_token='+oauth_token)
    }
  });
});

app.listen(1337);

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