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Contents
# frozen_string_literal: true
module RuboCop
module Cop
module Security
# This cop checks for the use of `Kernel#eval` and `Binding#eval`.
#
# @example
#
# # bad
#
# eval(something)
# binding.eval(something)
class Eval < Cop
MSG = 'The use of `eval` is a serious security risk.'.freeze
def_node_matcher :eval?, <<-PATTERN
(send {nil? (send nil? :binding)} :eval $!str ...)
PATTERN
def on_send(node)
eval?(node) do |code|
return if code.dstr_type? && code.recursive_literal?
add_offense(node, location: :selector)
end
end
end
end
end
end
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