rack_usable_digest_auth.rb

# I doubt this even works, I just was looking at Rack::Auth::Digest::MD5
# and realized that you can't use it with the Rack::Builder dsl because it
# needs things set after it has been initialized.
# This bothered me, so I blocked this out.
# Doing it this way rather than passing a self block allows it to 
# continue to act like Rack::Auth::Basic does.
# My main annoyance was that the interfaces differ in ways that seem to
# make little sense to me.

module Rack::Auth::UsableDigestMD5
  def self.new protected_app,options,&block
    app = Rack::Auth::Digest::MD5.new protected_app,block
    app.opaque = options[:opaque]
    app.realm = options[:realm]
    app.passwords_hashed = options[:passwords_hashed]
  end
end

#Usage
#
 use Rack::Auth::UsableDigestMD5, :opaque=>'something-secret',
    :realm=>'My Castle',
    :passwords_hashed=> true do |username|
       'password' if 'Fred' == username
    end

zanother_interface.rb

# another way to build the interface, but it breaks the shared behavior
#
# passing self to init block, instead of having options,
# and making the authenticator a method
#
# again, this code probably doesn't work as is
# Usage

use Rack::Auth::DigestWithMD5ThatHasADifferentInterface do |auth|
  auth.opaque = 'secret'
  auth.realm = 'My Castle'
  auth.passwords_hashed = true
  auth.authenticator do |username|
    'password' if 'Fred' == username
  end
end


# Mods

class Rack::Auth::DigestWithMD5ThatHasADifferentInterface
  def initialize
    yield self 
  end
  def authenticator &block=nil
    if block
      @authenticator = block
    else
      @authenticator
    end
  end
# ... same as Rack::Auth::Digest::MD5
end