Sina weibo does not returned :callback_confirmed params so make it can defined in strategies.

Author: mrichie

lib/omniauth/strategies/oauth.rb

@@ -15,6 +15,7 @@ class OAuth
       option :read_timeout, 30
       option :authorize_params, {}
       option :request_params, {}
+      option :callback_confirmed, nil
 
       attr_reader :access_token
 
@@ -28,7 +29,7 @@ def consumer
       def request_phase
         request_token = consumer.get_request_token({:oauth_callback => callback_url}, options.request_params)
         session['oauth'] ||= {}
-        session['oauth'][name.to_s] = {'callback_confirmed' => request_token.callback_confirmed?, 'request_token' => request_token.token, 'request_secret' => request_token.secret}
+        session['oauth'][name.to_s] = {'callback_confirmed' => options[:callback_confirmed] || request_token.callback_confirmed?, 'request_token' => request_token.token, 'request_secret' => request_token.secret}
 
         if request_token.callback_confirmed?
           redirect request_token.authorize_url(options[:authorize_params])