Class: Spektr::Checks::Sqli

Inherits:
Base
  • Object
show all
Defined in:
lib/spektr/checks/sqli.rb

Instance Attribute Summary

Attributes inherited from Base

#name

Instance Method Summary collapse

Methods inherited from Base

#app_version_between?, #dupe?, #model_attribute?, #should_run?, #target_affected?, #user_input?, #version_affected, #version_between?, #warn!

Constructor Details

#initialize(app, target) ⇒ Sqli

Returns a new instance of Sqli.



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# File 'lib/spektr/checks/sqli.rb', line 4

def initialize(app, target)
  super
  @name = "SQL Injection"
  @name = "SQL Injection"
  @targets = ["Spektr::Targets::Base", "Spektr::Targets::Controller", "Spektr::Targets::Model"]
end

Instance Method Details

#check_argument(argument, method, call) ⇒ Object 



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# File 'lib/spektr/checks/sqli.rb', line 44

def check_argument(argument, method, call)
  return if argument.nil?
  if user_input?(argument.type, argument.name, argument.ast, argument)
    warn! @target, self, call.location, "Possible SQL Injection at #{method}"
  end
end

#run ⇒ Object 



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# File 'lib/spektr/checks/sqli.rb', line 11

def run
  return unless super

  [
    :average, :count, :maximum, :minimum, :sum, :exists?,
    :find_by, :find_by!, :find_or_create_by, :find_or_create_by!,
    :find_or_initialize_by, :from, :group, :having, :join, :lock,
    :where, :not, :select, :rewhere, :reselect, :update_all

  ].each do |m|
    @target.find_calls(m).each do |call|
      check_argument(call.arguments.first, m, call)
    end
  end
  [:calculate].each do |m|
    @target.find_calls(m).each do |call|
      check_argument(call.arguments[1], m, call)
    end
  end

  [:delete_by, :destroy_by].each do |m|
    @target.find_calls(m).each do |call|
      if call.arguments.first
        check_argument(call.arguments.first, m, call)
      end
      call.options.values.each do |option|
        check_argument(@target.ast_to_exp(option.key), m, call)
        check_argument(@target.ast_to_exp(option.value), m, call)
      end
    end
  end
end