Class: Rack::Protection::IPSpoofing

Inherits:
Base
  • Object
show all
Defined in:
lib/rack/protection/ip_spoofing.rb

Overview

Prevented attack

IP spoofing

Supported browsers

all

More infos

blog.c22.cc/2011/04/22/surveymonkey-ip-spoofing/

Detect (some) IP spoofing attacks.

Constant Summary

Constants inherited from Base

Base::DEFAULT_OPTIONS

Instance Attribute Summary

Attributes inherited from Base

#app, #options

Instance Method Summary collapse

Methods inherited from Base

#call, #default_options, default_options, default_reaction, #deny, #drop_session, #encrypt, #html?, #initialize, #instrument, #origin, #random_string, #react, #referrer, #report, #safe?, #secure_compare, #session, #session?, #warn

Constructor Details

This class inherits a constructor from Rack::Protection::Base

Instance Method Details

#accepts?(env) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rack/protection/ip_spoofing.rb', line 16

def accepts?(env)
  return true unless env.include? 'HTTP_X_FORWARDED_FOR'

  ips = env['HTTP_X_FORWARDED_FOR'].split(',').map(&:strip)
  return false if env.include?('HTTP_CLIENT_IP') && (!ips.include? env['HTTP_CLIENT_IP'])
  return false if env.include?('HTTP_X_REAL_IP') && (!ips.include? env['HTTP_X_REAL_IP'])

  true
end