-------------------------------------------------------------------------------- - OAuth Provider library in Ruby -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- - 1) Getting the library setup - 2) Creating a provider - 3) Adding a consumer - 4) Issuing a request token - 5) Authorizing a request token - 6) Upgrading a request token to an access token - 7) Confirming access for an access token -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- - 1) Getting the library setup -------------------------------------------------------------------------------- You can currently only download the source and build a gem. It will be put on rubyforge once it is more feature-some. # git clone git://github.com/halorgium/oauth_provider.git # rake package -------------------------------------------------------------------------------- - 2) Getting the library setup -------------------------------------------------------------------------------- Create a provider to allow you to interact issue request tokens etc. There are several backends to allow you to use this for real and in testing. The in-memory backend is best for testing, it allows you to not have the overhead of a database. # provider = OAuthProvider.create(:in_memory) The DataMapper backend is currently the only real backend, you can provide a repository which will allow you to use a different database connection. # provider = OAuthProvider.create(:data_mapper, :some_oauth_repository) -------------------------------------------------------------------------------- - 3) Adding a consumer -------------------------------------------------------------------------------- To add a consumer to the provider, you need to provide a callback URL. # consumer = provider.add_consumer("http://myconsumer.com/token") You should store the consumer shared key in your database so you can associate your users with the tokens they own. # Consumer.create("My Consumer", consumer.shared_key) -------------------------------------------------------------------------------- - 4) Issuing a request token -------------------------------------------------------------------------------- Now you can issue a request token, this will save the token for later access. You need to pass in the raw request object which your web framework uses and require the correct request-proxy. Rails (ActionController): # require 'oauth/request_proxy/action_controller_request' XMPP4R: # require 'oauth/request_proxy/jabber_request' Net::HTTP: # require 'oauth/request_proxy/net_http' Sinatra/Merb (Rack): # require 'oauth/request_proxy/rack_request' Once that file is required, you can ask the provider to issue a token. # user_request = provider.issue_request(request) You should save this token in your database to connect this token with a particular user. # current_user.tokens.create(:consumer_shared_key => user_request.consumer.shared_key, # :shared_key => user_request.shared_key) This object allows you to access the query_string which should be returned to the consumer. This is the form: oauth_token=ABCDE&oauth_token_secret=SECRET123 # user_request.query_string Now it is up to the consumer to redirect the user to your authorization screen. To locate the token which corresponds with the shared key (usually the 'oauth_token' parameter in the request) you need to -------------------------------------------------------------------------------- - 5) Authorizing a request token -------------------------------------------------------------------------------- Once you have determined that the user wishes to authorize the request. You should display the consumer information to the user. An example ERB view might be: # <p>You are about to authorize <%= token.consumer.name %> to access your account %></p> # <p>Do you want this to happen?</p> # <p><a href="/authorize?oauth_token=<%= token.shared_key %>Authorize it</a> At this point, you can also store any access control information to allow this consumer to perhaps only have read-access to the user's information. Then in the 'authorize' action you would tell the provider to authorize this request token and redirect back to the consumer callback URL. # user_request.authorize # redirect_to user_request.callback -------------------------------------------------------------------------------- - 6) Upgrading a request token to an access token -------------------------------------------------------------------------------- Now that the request token is authorized by the user, the consumer can upgrade this token to an access token. # user_access = provider.upgrade_request(request) If the request token is not yet authorized, an exception will be raised. The exception class is 'OAuthProvider::UserRequestNotAuthorized'. If the request token is authorized, the request token will be destroyed and a access token will be generated and returned. Now you can save this into your database. # token = current_user.tokens.find_by_shared_key(user_access.request_shared_key) # token.update_attributes(:access => true, :shared_key => user_access.shared_key) And return the query string back to the consumer # user_access.query_string -------------------------------------------------------------------------------- - 7) Confirming access for an access token -------------------------------------------------------------------------------- At this point, the consumer should have a valid access token and can make API requests. You can ask the provider to confirm that the access token is valid. # user_access = provider.confirm_access(request) Now you can find the user token which corresponds to the shared_key. # token = current_user.tokens.first(:access => true, :shared_key => user_access.shared_key) You are now ready to respond to the API request as needed!
Project
oauth_provider
Makes it easy(er) to make an oauth provider.
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