= OmniAuth::OpenID
Provides strategies for authenticating to providers using the OpenID standard.
== Installation
To get just OpenID functionality:
gem install oa-openid
For the full auth suite:
gem install omniauth
== Stand-Alone Example
Use the strategy as a middleware in your application:
require 'omniauth/openid'
require 'openid/store/filesystem'
use Rack::Session::Cookie
use OmniAuth::Strategies::OpenID, OpenID::Store::Filesystem.new('/tmp')
Then simply direct users to '/auth/open_id' to prompt them for their OpenID identifier. You may also pre-set the identifier by passing an <tt>identifier</tt> parameter to the URL (Example: <tt>/auth/open_id?openid_url=yahoo.com</tt>).
A list of all OpenID stores is available at http://github.com/openid/ruby-openid/tree/master/lib/openid/store/
== OmniAuth Builder
If OpenID is one of several authentication strategies, use the OmniAuth Builder:
require 'omniauth/openid'
require 'omniauth/basic' # for Campfire
require 'openid/store/filesystem'
use OmniAuth::Builder do
provider :open_id, OpenID::Store::Filesystem.new('/tmp')
provider :campfire
end
== Configured Identifiers
You may pre-configure an OpenID identifier. For example, to use Google's main OpenID endpoint:
use OmniAuth::Builder do
provider :open_id, nil, :name => 'google', :identifier => 'https://www.google.com/accounts/o8/id'
end
Note the use of nil, which will trigger ruby-openid's default Memory Store.
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