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Introduction to Tornado
book

Introduction to Tornado

by Michael Dory, Allison Parrish, Brendan Berg
March 2012
Beginner to intermediate content levelBeginner to intermediate
138 pages
3h 21m
English
O'Reilly Media, Inc.
Content preview from Introduction to Tornado

Chapter 7. Authenticating with External Services

The example in Chapter 6 showed how to use secure cookies and the tornado.web.authenticated decorator to implement a simple user authentication form. In this chapter, we will look at how to authenticate against third-party services. Popular web APIs like Facebook’s and Twitter’s use the OAuth protocol to securely verify someone’s identity while allowing their users to maintain control over third-party access to their personal information. Tornado offers a number of Python mix-ins that help developers authenticate with external services, either with explicit support for popular services, or through general OAuth support. In this chapter, we’ll explore two example applications that use Tornado’s auth module: one that connects to Twitter and another that connects to Facebook.

The Tornado auth Module

As a web application developer, you might want to allow your users to post updates to Twitter or read recent Facebook statuses directly through your application. Most social network and single sign-on APIs provide a standard workflow for authorizing users on your application. The Tornado auth module provides classes for OpenID, OAuth, OAuth 2.0, Twitter, FriendFeed, Google OpenID, the Facebook REST API, and the Facebook Graph API. Although you could implement handlers for a particular external service’s authorization process on your own, Tornado’s auth module provides a simplified workflow for developing applications that connect to any of ...

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Publisher Resources

ISBN: 9781449312787Errata Page