Module: ActiveRecord::Sentry::ClassMethods

Defined in:
lib/active_record/sentry.rb

Instance Method Summary collapse

Instance Method Details

#asymmetrically_encrypts(attr_name, options = {}) ⇒ Object

def generates_crypted_hash_of(attribute)

before_validation ::Sentry::ShaSentry.new(attribute)
attr_accessor attribute

end


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# File 'lib/active_record/sentry.rb', line 25

def asymmetrically_encrypts(attr_name, options = {})
  #temp_sentry = ::Sentry::AsymmetricSentryCallback.new(attr_name)
  #before_validation temp_sentry
  #after_save temp_sentry
  unless instance_methods.include?("#{attr_name}_with_decryption")
    define_read_methods

    define_method("#{attr_name}_with_decryption") do |*optional|
      begin
        crypted_value = self.send("#{attr_name}_without_decryption")        #puts "crypted value: #{crypted_value}"

        return nil if crypted_value.nil?
        key = optional.shift || (options[:key].is_a?(Proc) ? options[:key].call : options[:key]) || ::Sentry.default_key
        decrypted_value = ::Sentry::AsymmetricSentry.decrypt_large_from_base64(crypted_value, key)
        return decrypted_value
      rescue Exception => e
        nil
      end
    end

    alias_method_chain attr_name, :decryption
    alias_method "crypted_#{attr_name}", "#{attr_name}_without_decryption"
    alias_method "#{attr_name}_before_type_cast", "#{attr_name}_with_decryption"

    define_method("#{attr_name}_with_encryption=") do |value|
      encrypted_value = self.class.encrypt_for_sentry(value)
      self.send("#{attr_name}_without_encryption=", encrypted_value)
      nil
    end

    alias_method_chain "#{attr_name}=", :encryption
  end

end

#encrypt_for_sentry(string) ⇒ Object


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# File 'lib/active_record/sentry.rb', line 60

def encrypt_for_sentry(string)
  return nil if string.nil?
  return ::Sentry::AsymmetricSentry.encrypt_large_to_base64(string)
end

#generates_crypted(attr_name, options = {}) ⇒ Object


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# File 'lib/active_record/sentry.rb', line 8

def generates_crypted(attr_name, options = {})
  mode = options[:mode] || :asymmetric
  case mode    #when :sha
    #  generates_crypted_hash_of(attr_name)

    when :asymmetric, :asymmetrical
      asymmetrically_encrypts(attr_name)    #when :symmetric, :symmetrical
    #  symmetrically_encrypts(attr_name)

  end
end