Rack(Warden) woes

Hi,

I'm trying to use the Warden gem via RailsWarden. It is not working,
but I guess I don't understand a few things.

How do you access a Rack thing from a method in your controller?

env[:warden] fails with a method not found error for env.

I want only certain actions to check to see if the user is logged in.

I assumed that warden was doing all the work since my strategy checked
for the correct password. I didn't need to do anything in my
controller login action

Here is the strategy code:

Warden::Strategies.add(:password) do
  def valid?
    params[:login][:password]
    puts "logging in"
  end
  def authenticate!
    puts "authenticating"
    params[:login][:password] == 'password' ? success! : fail!
  end
end

However any password succeeds. Indeed the puts are never happening.

Does/can warden log what it is doing? Nothing is getting logged to the
console or development.log.