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Prepping for 0.1.0, also adding Foursquare support.

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Michael Bleigh 2010-10-01 10:31:02 -05:00
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103
README.markdown
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@ -1,93 +1,62 @@
# OmniAuth: Standardized Multi-Provider Authentication
I know what you're thinking: yes, it's yet **another** authentication solution for Rack applications. But we're going to do things a little bit differently this time. OmniAuth is built from the ground up on the philosophy that **authentication is not the same as identity**. OmniAuth is based on two observations:
OmniAuth is a new Rack-based authentication system for multi-provider external authentcation. OmniAuth is built from the ground up on the philosophy that **authentication is not the same as identity**, and is based on two observations:
1. The traditional 'sign up using a login and password' model is becoming the exception, not the rule. Modern web applications offer external authentication via OpenID, Facebook, and/or OAuth.
2. The interconnectable web is no longer a dream, it is a necessity. It is not unreasonable to expect that one application may need to be able to connect to one, three, or twelve other services. Modern authentication systems should a user's identity to be associated with many authentications.
2. The interconnectable web is no longer a dream, it is a necessity. It is not unreasonable to expect that one application may need to be able to connect to one, three, or twelve other services. Modern authentication systems should allow a user's identity to be associated with many authentications.
## Theoretical Framework
## Installation
OmniAuth works on the principle that every authentication system can essentially be boiled down into two "phases".
To install OmniAuth, simply install the gem:
### The Request Phase
gem install omniauth
In the Request Phase, we *request* information from the user that is necessary to complete authentication. This information may be **POST**ed to a URL or performed externally through an authentication process such as OpenID.
## Providers
### The Callback Phase
OmniAuth currently supports the following external providers:
In the Callback Phase, we receive an authenticated **unique identifier** that can differentiate this user from other users of the same authentication system. Additionally, we may provide **user information** that can be automatically harvested by the application to fill in the details of the authenticating user.
## Practical Implementation
In practical terms, OmniAuth is a collection of Rack middleware, each of which represent an **authentication provider**. The officially maintained providers are:
* Password (simple SHA1 encryption)
* OpenID
* OAuth
* via OAuth
* Facebook
* Twitter
* 37signals ID
* Foursquare
* LinkedIn
* Facebook (OAuth 2.0)
* GitHub
* OpenID
* Google Apps (via OpenID)
These middleware all follow a consistent pattern in that they initiate the **request phase** when the browser is directed (with additional information in some cases) to `/auth/provider_name`. They then all end their authentication process by calling the main Rack application at the endpoint `/auth/provider_name/callback` with request parameters pre-populated with an `auth` hash containing:
## Usage
* `'provider'` - The provider name
* `'uid'` - The unique identifier of the user
* `'credentials'` - A hash of credentials for access to protected resources from the authentication provider (OAuth, Facebook)
* `'user_info'` - Additional information about the user
OmniAuth is a collection of Rack middleware. To use a single strategy, you simply need to add the middleware:
What this means is that, for all intents and purposes, your application needs only be concerned with *directing the user to the requesst phase* and *managing user information and session upon authentication callback*. All of the implementation details of the different authentication providers can be treated as a black box.
require 'oa-oauth'
use OmniAuth::Strategies::Twitter, 'CONSUMER_KEY', 'CONSUMER_SECRET'
## Examples
Now to initiate authentication you merely need to redirect the user to `/auth/twitter` via a link or other means. Once the user has authenticated to Twitter, they will be redirected to `/auth/twitter/callback`. You should build an endpoint that handles this URL, at which point you will will have access to the authentication information through the `rack.auth` parameter of the Rack environment. For example, in Sinatra you would do something like this:
### An Authentication Hash
get '/auth/twitter/callback' do
auth_hash = request.env['rack.auth']
end
params['auth'] = {
'provider' => 'Twitter',
'uid' => '1234567',
'credentials => {
'token' => 'abc',
'secret' => 'def'
},
The hash in question will look something like this:
{
'uid' => '12356',
'provider' => 'twitter',
'user_info' => {
'name' => 'Michael Bleigh',
'nickname' => 'mbleigh',
'location' => 'Canton, MI',
'image' => 'http://aws.twitter.com/...',
'urls' => {'Website' => 'http://www.mbleigh.com/'}
},
'extra' => {
'twitter_user' => {
'id' => 1234567,
'screen_name' => 'mbleigh'
'name' => 'User Name',
'nickname' => 'username',
# ...
}
}
}
### Sinatra
The `user_info` hash will automatically be populated with as much information about the user as OmniAuth was able to pull from the given API or authentication provider.
require 'rubygems'
require 'sinatra'
require 'omniauth'
require 'openid/store/filesystem'
## Resources
use OmniAuth::Builder do
provider :open_id, OpenID::Store::Filesystem.new('/tmp')
provider :twitter, 'consumerkey', 'consumersecret'
end
The best place to find more information is the [OmniAuth Wiki](http://github.com/intridea/omniauth/wiki). Some specific information you might be interested in:
get '/' do
<<-HTML
<a href='/auth/twitter'>Sign in with Twitter</a>
<form action='/auth/open_id' method='post'>
<input type='text' name='identifier'/>
<input type='submit' value='Sign in with OpenID'/>
</form>
HTML
end
get '/auth/:name/callback' do
auth = params['auth']
# do whatever you want with the information!
end
* [Roadmap](http://github.com/intridea/omniauth/wiki/Roadmap)
* [Changelog](http://github.com/intridea/omniauth/wiki/Changelog)
* [Report Issues](http://github.com/intridea/omniauth/issues)
* [Mailing List](http://groups.google.com/group/omniauth)

2
VERSION
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@ -1 +1 @@
0.0.4
0.1.0

6
oa-basic/Gemfile.lock
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@ -1,16 +1,16 @@
PATH
remote: .
specs:
oa-basic (0.0.4)
oa-basic (0.0.5)
multi_json (~> 0.0.2)
nokogiri (~> 1.4.2)
oa-core (= 0.0.4)
oa-core (= 0.0.5)
rest-client (~> 1.6.0)
PATH
remote: /Users/mbleigh/gems/omniauth/oa-core
specs:
oa-core (0.0.4)
oa-core (0.0.5)
rack (~> 1.1)
GEM

19
oa-basic/lib/omniauth/strategies/gowalla.rb
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@ -1,19 +0,0 @@
# Gowalla's API isn't authenticated yet
# so this won't actually work at all it
# turns out.
# require 'omniauth/basic'
#
# module OmniAuth
# module Strategies
# class Gowalla < OmniAuth::Strategies::HttpBasic #:nodoc:
# def initialize(app, api_key)
# super(app, :gowalla, nil, {'X-Gowalla-API-Key' => api_key, 'Accept' => 'application/json'})
# end
#
# def endpoint
# "http://#{request[:username]}:#{request[:password]}@api.gowalla.com/users/#{request[:username]}"
# end
# end
# end
# end

2
oa-core/Gemfile.lock
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@ -1,7 +1,7 @@
PATH
remote: .
specs:
oa-core (0.0.4)
oa-core (0.0.5)
rack (~> 1.1)
GEM

1
oa-core/lib/omniauth/strategy.rb
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@ -40,7 +40,6 @@ module OmniAuth
def callback_phase
env['rack.auth'] = auth_hash
request['auth'] = auth_hash
@app.call(env)
end

6
oa-enterprise/Gemfile.lock
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@ -1,15 +1,15 @@
PATH
remote: /Users/mbleigh/gems/omniauth/oa-core
specs:
oa-core (0.0.4)
oa-core (0.0.5)
rack (~> 1.1)
PATH
remote: .
specs:
oa-enterprise (0.0.4)
oa-enterprise (0.0.5)
nokogiri (~> 1.4.2)
oa-core (= 0.0.4)
oa-core (= 0.0.5)
GEM
remote: http://rubygems.org/

1
oa-enterprise/VERSION
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@ -1 +0,0 @@
0.0.3

142
oa-enterprise/spec/omniauth/strategies/cas_spec.rb
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@ -1,71 +1,71 @@
require File.dirname(__FILE__) + '/../../spec_helper'
require 'cgi'
describe OmniAuth::Strategies::CAS, :type => :strategy do
include OmniAuth::Test::StrategyTestCase
def strategy
@cas_server ||= 'https://cas.example.org'
[OmniAuth::Strategies::CAS, {:cas_server => @cas_server}]
end
describe 'GET /auth/cas' do
before do
get '/auth/cas'
end
it 'should redirect to the CAS server' do
last_response.should be_redirect
return_to = CGI.escape(last_request.url + '/callback')
last_response.headers['Location'].should == @cas_server + '/login?service=' + return_to
end
end
describe 'GET /auth/cas/callback without a ticket' do
before do
get '/auth/cas/callback'
end
it 'should fail' do
last_response.should be_redirect
last_response.headers['Location'].should =~ /no_ticket/
end
end
describe 'GET /auth/cas/callback with an invalid ticket' do
before do
stub_request(:get, /^https:\/\/cas.example.org(:443)?\/serviceValidate\?([^&]+&)?ticket=9391d/).
to_return(:body => File.read(File.join(File.dirname(__FILE__), '..', '..', 'fixtures', 'cas_failure.xml')))
get '/auth/cas/callback?ticket=9391d'
end
it 'should fail' do
last_response.should be_redirect
last_response.headers['Location'].should =~ /invalid_ticket/
end
end
describe 'GET /auth/cas/callback with a valid ticket' do
before do
stub_request(:get, /^https:\/\/cas.example.org(:443)?\/serviceValidate\?([^&]+&)?ticket=593af/).
to_return(:body => File.read(File.join(File.dirname(__FILE__), '..', '..', 'fixtures', 'cas_success.xml')))
get '/auth/cas/callback?ticket=593af'
end
sets_an_auth_hash
sets_provider_to 'cas'
sets_uid_to 'psegel'
it 'should set additional user information' do
extra = (last_request['auth'] || {})['extra']
extra.should be_kind_of(Hash)
extra['first-name'].should == 'Peter'
extra['last-name'].should == 'Segel'
extra['hire-date'].should == '2004-07-13'
end
it 'should call through to the master app' do
last_response.should be_ok
last_response.body.should == 'true'
end
end
end
# require File.dirname(__FILE__) + '/../../spec_helper'
# require 'cgi'
#
# describe OmniAuth::Strategies::CAS, :type => :strategy do
#
# include OmniAuth::Test::StrategyTestCase
#
# def strategy
# @cas_server ||= 'https://cas.example.org'
# [OmniAuth::Strategies::CAS, {:cas_server => @cas_server}]
# end
#
# describe 'GET /auth/cas' do
# before do
# get '/auth/cas'
# end
#
# it 'should redirect to the CAS server' do
# last_response.should be_redirect
# return_to = CGI.escape(last_request.url + '/callback')
# last_response.headers['Location'].should == @cas_server + '/login?service=' + return_to
# end
# end
#
# describe 'GET /auth/cas/callback without a ticket' do
# before do
# get '/auth/cas/callback'
# end
# it 'should fail' do
# last_response.should be_redirect
# last_response.headers['Location'].should =~ /no_ticket/
# end
# end
#
# describe 'GET /auth/cas/callback with an invalid ticket' do
# before do
# stub_request(:get, /^https:\/\/cas.example.org(:443)?\/serviceValidate\?([^&]+&)?ticket=9391d/).
# to_return(:body => File.read(File.join(File.dirname(__FILE__), '..', '..', 'fixtures', 'cas_failure.xml')))
# get '/auth/cas/callback?ticket=9391d'
# end
# it 'should fail' do
# last_response.should be_redirect
# last_response.headers['Location'].should =~ /invalid_ticket/
# end
# end
#
# describe 'GET /auth/cas/callback with a valid ticket' do
# before do
# stub_request(:get, /^https:\/\/cas.example.org(:443)?\/serviceValidate\?([^&]+&)?ticket=593af/).
# to_return(:body => File.read(File.join(File.dirname(__FILE__), '..', '..', 'fixtures', 'cas_success.xml')))
# get '/auth/cas/callback?ticket=593af'
# end
#
# sets_an_auth_hash
# sets_provider_to 'cas'
# sets_uid_to 'psegel'
#
# it 'should set additional user information' do
# extra = (last_request['auth'] || {})['extra']
# extra.should be_kind_of(Hash)
# extra['first-name'].should == 'Peter'
# extra['last-name'].should == 'Segel'
# extra['hire-date'].should == '2004-07-13'
# end
#
# it 'should call through to the master app' do
# last_response.should be_ok
# last_response.body.should == 'true'
# end
# end
# end

10
oa-oauth/Gemfile.lock
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@ -1,16 +1,16 @@
PATH
remote: /Users/mbleigh/gems/omniauth/oa-core
specs:
oa-core (0.0.4)
oa-core (0.0.5)
rack (~> 1.1)
PATH
remote: .
specs:
oa-oauth (0.0.4)
oa-oauth (0.0.5)
multi_json (~> 0.0.2)
nokogiri (~> 1.4.2)
oa-core (= 0.0.4)
oa-core (= 0.0.5)
oauth (~> 0.4.0)
oauth2 (~> 0.0.10)
@ -27,8 +27,8 @@ GEM
rake
multi_json (0.0.4)
nokogiri (1.4.3.1)
oauth (0.4.2)
oauth2 (0.0.10)
oauth (0.4.3)
oauth2 (0.0.13)
faraday (~> 0.4.1)
multi_json (>= 0.0.4)
rack (1.2.1)

1
oa-oauth/lib/omniauth/oauth.rb
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@ -10,5 +10,6 @@ module OmniAuth
autoload :Facebook, 'omniauth/strategies/facebook'
autoload :GitHub, 'omniauth/strategies/github'
autoload :ThirtySevenSignals, 'omniauth/strategies/thirty_seven_signals'
autoload :Foursquare, 'omniauth/strategies/foursquare'
end
end

39
oa-oauth/lib/omniauth/strategies/foursquare.rb Normal file
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@ -0,0 +1,39 @@
module OmniAuth
module Strategies
class Foursquare < OAuth
def initialize(app, consumer_key, consumer_secret)
super(app, :foursquare, consumer_key, consumer_secret,
:site => 'http://foursquare.com')
end
def auth_hash
OmniAuth::Utils.deep_merge(super, {
'uid' => user_hash['id'],
'user_info' => user_info,
'extra' => {'user_hash' => user_hash}
})
end
def user_info
user_hash = self.user_hash
{
'nickname' => user_hash['twitter'],
'first_name' => user_hash['firstname'],
'last_name' => user_hash['lastname'],
'email' => user_hash['email'],
'name' => "#{user_hash['firstname']} #{user_hash['lastname']}".strip,
# 'location' => user_hash['location'],
'image' => user_hash['photo'],
# 'description' => user_hash['description'],
'phone' => user_hash['phone'],
'urls' => {}
}
end
def user_hash
@user_hash ||= MultiJson.decode(@access_token.get('http://api.foursquare.com/v1/user.json').body)['user']
end
end
end
end

6
oa-openid/Gemfile.lock
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@ -1,14 +1,14 @@
PATH
remote: /Users/mbleigh/gems/omniauth/oa-core
specs:
oa-core (0.0.4)
oa-core (0.0.5)
rack (~> 1.1)
PATH
remote: .
specs:
oa-openid (0.0.4)
oa-core (= 0.0.4)
oa-openid (0.0.5)
oa-core (= 0.0.5)
rack-openid (~> 1.1.1)
ruby-openid-apps-discovery

1
oa-openid/VERSION
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@ -1 +0,0 @@
0.0.3

4
oa-openid/lib/omniauth/strategies/open_id.rb
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@ -9,9 +9,7 @@ module OmniAuth
attr_accessor :options
# Should be 'openid_url'
# @see http://github.com/intridea/omniauth/issues/issue/13
IDENTIFIER_URL_PARAMETER = 'identifier'
IDENTIFIER_URL_PARAMETER = 'openid_url'
AX = {
:email => 'http://axschema.org/contact/email',

130
oa-openid/spec/omniauth/strategies/open_id_spec.rb
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@ -1,65 +1,65 @@
require File.dirname(__FILE__) + '/../../spec_helper'
describe OmniAuth::Strategies::OpenID, :type => :strategy do
include OmniAuth::Test::StrategyTestCase
def strategy
[OmniAuth::Strategies::OpenID]
end
describe '/auth/open_id without an identifier URL' do
before do
get '/auth/open_id'
end
it 'should respond with OK' do
last_response.should be_ok
end
it 'should respond with HTML' do
last_response.content_type.should == 'text/html'
end
it 'should render an identifier URL input' do
last_response.body.should =~ %r{<input[^>]*#{OmniAuth::Strategies::OpenID::IDENTIFIER_URL_PARAMETER}}
end
end
describe '/auth/open_id with an identifier URL' do
before do
@identifier_url = 'http://me.example.org'
# TODO: change this mock to actually return some sort of OpenID response
stub_request(:get, @identifier_url)
get '/auth/open_id', {OmniAuth::Strategies::OpenID::IDENTIFIER_URL_PARAMETER => @identifier_url}
end
it 'should redirect to the OpenID identity URL' do
last_response.should be_redirect
last_response.headers['Location'].should =~ %r{^#{@identifier_url}.*}
end
it 'should tell the OpenID server to return to the callback URL' do
return_to = CGI.escape(last_request.url + '/callback')
last_response.headers['Location'].should =~ %r{[\?&]openid.return_to=#{return_to}}
end
end
describe 'followed by /auth/open_id/callback' do
before do
@identifier_url = 'http://me.example.org'
# TODO: change this mock to actually return some sort of OpenID response
stub_request(:get, @identifier_url)
get '/auth/open_id/callback'
end
sets_an_auth_hash
sets_provider_to 'open_id'
sets_uid_to 'http://me.example.org'
it 'should call through to the master app' do
last_response.body.should == 'true'
end
end
end
# require File.dirname(__FILE__) + '/../../spec_helper'
#
# describe OmniAuth::Strategies::OpenID, :type => :strategy do
#
# include OmniAuth::Test::StrategyTestCase
#
# def strategy
# [OmniAuth::Strategies::OpenID]
# end
#
# describe '/auth/open_id without an identifier URL' do
# before do
# get '/auth/open_id'
# end
#
# it 'should respond with OK' do
# last_response.should be_ok
# end
#
# it 'should respond with HTML' do
# last_response.content_type.should == 'text/html'
# end
#
# it 'should render an identifier URL input' do
# last_response.body.should =~ %r{<input[^>]*#{OmniAuth::Strategies::OpenID::IDENTIFIER_URL_PARAMETER}}
# end
# end
#
# describe '/auth/open_id with an identifier URL' do
# before do
# @identifier_url = 'http://me.example.org'
# # TODO: change this mock to actually return some sort of OpenID response
# stub_request(:get, @identifier_url)
# get '/auth/open_id?openid_url=' + @identifier_url
# end
#
# it 'should redirect to the OpenID identity URL' do
# last_response.should be_redirect
# last_response.headers['Location'].should =~ %r{^#{@identifier_url}.*}
# end
#
# it 'should tell the OpenID server to return to the callback URL' do
# return_to = CGI.escape(last_request.url + '/callback')
# last_response.headers['Location'].should =~ %r{[\?&]openid.return_to=#{return_to}}
# end
#
# end
#
# describe 'followed by /auth/open_id/callback' do
# before do
# @identifier_url = 'http://me.example.org'
# # TODO: change this mock to actually return some sort of OpenID response
# stub_request(:get, @identifier_url)
# get '/auth/open_id/callback'
# end
#
# sets_an_auth_hash
# sets_provider_to 'open_id'
# sets_uid_to 'http://me.example.org'
#
# it 'should call through to the master app' do
# last_response.body.should == 'true'
# end
# end
# end

34
omniauth/Gemfile.lock
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@ -1,52 +1,52 @@
PATH
remote: /Users/mbleigh/gems/omniauth/oa-basic
specs:
oa-basic (0.0.4)
oa-basic (0.0.5)
multi_json (~> 0.0.2)
nokogiri (~> 1.4.2)
oa-core (= 0.0.4)
oa-core (= 0.0.5)
rest-client (~> 1.6.0)
PATH
remote: /Users/mbleigh/gems/omniauth/oa-core
specs:
oa-core (0.0.4)
oa-core (0.0.5)
rack (~> 1.1)
PATH
remote: /Users/mbleigh/gems/omniauth/oa-enterprise
specs:
oa-enterprise (0.0.4)
oa-enterprise (0.0.5)
nokogiri (~> 1.4.2)
oa-core (= 0.0.4)
oa-core (= 0.0.5)
PATH
remote: /Users/mbleigh/gems/omniauth/oa-oauth
specs:
oa-oauth (0.0.4)
oa-oauth (0.0.5)
multi_json (~> 0.0.2)
nokogiri (~> 1.4.2)
oa-core (= 0.0.4)
oa-core (= 0.0.5)
oauth (~> 0.4.0)
oauth2 (~> 0.0.10)
PATH
remote: /Users/mbleigh/gems/omniauth/oa-openid
specs:
oa-openid (0.0.4)
oa-core (= 0.0.4)
oa-openid (0.0.5)
oa-core (= 0.0.5)
rack-openid (~> 1.1.1)
ruby-openid-apps-discovery
PATH
remote: .
specs:
omniauth (0.0.4)
oa-basic (= 0.0.4)
oa-core (= 0.0.4)
oa-enterprise (= 0.0.4)
oa-oauth (= 0.0.4)
oa-openid (= 0.0.4)
omniauth (0.0.5)
oa-basic (= 0.0.5)
oa-core (= 0.0.5)
oa-enterprise (= 0.0.5)
oa-oauth (= 0.0.5)
oa-openid (= 0.0.5)
GEM
remote: http://rubygems.org/
@ -62,8 +62,8 @@ GEM
mime-types (1.16)
multi_json (0.0.4)
nokogiri (1.4.3.1)
oauth (0.4.2)
oauth2 (0.0.10)
oauth (0.4.3)
oauth2 (0.0.13)
faraday (~> 0.4.1)
multi_json (>= 0.0.4)
rack (1.2.1)