class App < Sinatra::Base use Rack::Session::Cookie use OmniAuth::Strategies::PAM, email_domain: "localhost.localdomain" helpers do def ensure_auth unless session[:auth] redirect '/auth/pam' end end end get '/' do ensure_auth end # OmniAuth support post '/auth/:name/callback' do auth = request.env['omniauth.auth'] puts auth <<-HTML