Class: SoldierOfCode::TowerGate

Inherits:
Object
  • Object
show all
Defined in:
lib/watch-tower.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(app = nil, guards = {}) ⇒ TowerGate

Returns a new instance of TowerGate.



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# File 'lib/watch-tower.rb', line 101

def initialize(app=nil, guards={})
  @app = app
  @guards = guards
end

Instance Attribute Details

#app ⇒ Object

Returns the value of attribute app.



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# File 'lib/watch-tower.rb', line 99

def app
  @app
end

#guards ⇒ Object

Returns the value of attribute guards.



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# File 'lib/watch-tower.rb', line 99

def guards
  @guards
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/watch-tower.rb', line 106

def call(env)
  session = env['rack.session']
  result = [401, {"Content-Type"=>"text/html"}, 'You have been arrested by this server.']
  begin
    guard = locate_guard(env)

    if guard then

      # "just need to check your paper work sir..."
      if guard.authenticated?(env) then
        # "looks like your cleared to enter, have a nice day"
        result = @app.call(env)
      elsif guard.authorized?(env) then
        return_path = session['watchtower.return_path']
        return_path = nil if return_path == ''

        # "looks like your cleared to enter, have a nice day"
        unless return_path then
          result = @app.call(env)
        else
          code = 302
          headers = {"Location" => return_path}
          result = [code, headers, []]
          session['watchtower.return_path'] = nil
        end
      else
        # "If you'd like to step over here sir and please remove your shoes..."
        code = 302
        headers = {"Location" => guard.}
        result = [code, headers, []]
      end
    else
      # No guard on duty - "This compound is monitored at all times" - sure...
      result = @app.call(env)
    end
  rescue => e
    puts "#{__FILE__}:#{__LINE__} [#{__method__}] EXCEPTION: #{e}"
    e.backtrace().each_with_index do |l, i|
      puts "\t- EXCEPTION STACK [#{i}]: #{l}"
    end
  end
  result
end

#locate_guard(env) ⇒ Object 



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# File 'lib/watch-tower.rb', line 150

def locate_guard(env)
  guard = nil
  begin
    session = env['rack.session'] ||= {}
    path = env['REQUEST_PATH']
    @guards.each do |proto_path, deligate|
      if path.starts_with?(proto_path)
        keys = deligate.new.token_keys # I really wanted to meta code a class method but...
        token = nil
        keys.each do |k|
          # check session for key
          token = session[k] if session[k]
        end
        unless token
          session['watchtower.return_path'] = path
          env['rack.session'] = session
          guard = deligate.new
        end
      end
    end
  rescue => e
    puts "#{__FILE__}:#{__LINE__} [#{__method__}] EXCEPTION: #{e}"
    e.backtrace().each_with_index do |l, i|
      puts "\t- EXCEPTION STACK [#{i}]: #{l}"
    end
  end
  guard
end