Add rack middleware

lib/project-honeypot.rb

@@ -1,6 +1,7 @@
 require 'net/dns'
-require File.dirname(__FILE__) + "/project_honeypot/url.rb"
+require "project_honeypot/url"
-require File.dirname(__FILE__) + "/project_honeypot/base.rb"
+require "project_honeypot/base"
+require "project_honeypot/rack"
 
 module ProjectHoneypot
   class << self

lib/project_honeypot/rack.rb

@@ -0,0 +1,19 @@
+module ProjectHoneypot
+  class Rack
+    def initialize(app, options={})
+      @app = app
+
+      raise ArgumentError, 'Must specify an API key' unless options[:api_key]
+      ProjectHoneypot.api_key = options[:api_key]
+    end
+
+    def call(env)
+      request = ::Rack::Request.new(env)
+      url = ProjectHoneypot.lookup(request.ip)
+
+      env['PROJECT_HONEYPOT_SAFE'] = url.safe?
+
+      @app.call(request.env)
+    end
+  end
+end