Class: TaintedLove::Replacer::ReplaceActiveRecord

Inherits:
Base
  • Object
show all
Defined in:
lib/tainted_love/replacer/replace_active_record.rb

Instance Method Summary collapse

Methods inherited from Base

replacers

Instance Method Details

#replace! ⇒ Object 



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# File 'lib/tainted_love/replacer/replace_active_record.rb', line 10

def replace!
  require 'active_record/relation'

  TaintedLove.proxy_method('ActiveRecord::QueryMethods', :where) do |_, *args|
    unless args.empty?
      f = args.first
      if f.is_a?(String) && f.tainted?
        TaintedLove.report(:ReplaceActiveRecord, f, [:sqli], 'Model.where using tainted string')
      end
    end
  end

  TaintedLove.proxy_method('ActiveRecord::QueryMethods', :select) do |_, *args|
    unless args.empty?
      f = args.first
      if f.is_a?(String) && f.tainted?
        TaintedLove.report(:ReplaceActiveRecord, f, [:sqli], 'Model#select using tainted string')
      end
    end
  end

  mod = Module.new do
    [:find_by_sql, :count_by_sql].each do |method|
      define_method(method) do |*args|
        if args.first.tainted?
          TaintedLove.report(:ReplaceActiveRecord, args.first, [:sqli], "Model##{method} using tainted string")
        end

        super(*args)
      end
    end
  end

  ActiveRecord::Base.extend(mod)
end

#should_replace? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/tainted_love/replacer/replace_active_record.rb', line 6

def should_replace?
  Object.const_defined?('ActiveRecord')
end