gistfile1.rb

module XAuth
module_function
  def retrieve_access_token(username, password, consumer_key, consumer_secret, site = 'https://api.twitter.com')
    consumer = OAuth::Consumer.new(
      consumer_key,
      consumer_secret,
      :site => site
    )
    
    # The code below is helped by:
    # http://ja.pastebin.ca/1796209
    # http://gist.github.com/259989
    access_token = consumer.get_access_token(nil, {}, {
      :x_auth_mode => "client_auth",
      :x_auth_username => username,
      :x_auth_password => password,
      })
    
    [consumer, access_token]
  end
end

namespace :channels do
  desc "Convert password-auth accounts to oauth with xauth"
  task :xauth => :environment do
    Channel.all(:conditions => { :oauth_enabled => false }).each do |channel|
      token, secret = XAuth.retrieve_access_token(channel.username,
                                                  channel.password,
                                                  Configuration.oauth_consumer_key,
                                                  Configuration.oauth_consumer_secret)
      channel.update_attributes(:oauth_token => token,
                                :oauth_secret => secret,
                                :oauth_enabled => true,
                                :password => 'xxxxxxoauthxxxxxxx')
    end
  end
end