Allows logging via Facebook, Yahoo, Gmail, Twitter and Openid
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What it does.
1. Allow logging in via various providers.
2. Import contacts from various third party sites, to find out which of your
friends already use our service.

Logging In

This is a application to enable authentication via various third party sites.
In particular it allows logging in via
1. Twitter
2. Gmail
3. Facebook
4. Yahoo(Essentially openid)
4. OpenId

Libs you need to install
See requirements.txt
use `pip install -r requirements.txt` to install all dependencies at once

The API Keys are available from 

How it works.
Openid: Users need to provide their openid providers. Talk to the providers and
Yahoo: Yahoo is an openid provider. Talk to Yahoo endpoints. (Endpoint:
Google: Google is a provider. Talk to them. (Endpoint:
Facebook: Facebook connect provides authentication framework.
Twitter: We use Twitter Oauth for authentication. In theory, Oauth shouldn't be
used for authentication. (It is an autorisation framework, not an authentication one),
In practice it works pretty well. Once you have an access_token, and a name, essentially



As with all APIs, we are limited by the amout of data which the API provider
provides us. For example, both Yahoo and Google provide extremely limited data
about the autheticated subscriber. Twitter and Facebook provide a lot of details,
but not the email. Different Openid providers are free to provide [different
amounts of data](

How it works.
1. For all providers(except Facebook) there are two urls and views. (start and done)
2. Start sets up the required tokens, and redirects and hands off to the correct
3. Provider handles authentication on their ends, and hands off to Us, providing
authorization tokens.
4. In done, we check if the user with these details already exists, if yes, we
log them in. Otherwise we create a new user, and log them in.

For all of these, we use standard django authenication system, with custom
auth_backends, hence all existing views, and decorators as login_required
will work as expected.


/login/ Login page. Has all the login options
/openid_login/ AND /openid_login/done/
/yahoo_login/ AND /yahoo_login/done/
/gmail_login/ AND /gmail_login/done/
/twitter_login/ AND /twitter_login/done/
/facebook_login/done/ We dont have a start url here, as the starting tokens are
set in a popup.

0. Install required libraries.
1. Get tokens and populate in
2. Set the token callback urls correctly at Twitter and Facebook.
4. Set the authentication_backends to the providers you are using.