49 lines
1.6 KiB
Ruby
49 lines
1.6 KiB
Ruby
|
# typed: strict
|
||
|
|
# frozen_string_literal: true
|
||
|
|
|
||
|
|
require "rubocops/extend/formula_cop"
|
||
|
|
|
||
|
|
module RuboCop
|
||
|
|
module Cop
|
||
|
|
module FormulaAudit
|
||
|
|
# This cop audits the use of 0.0.0.0 in formulae.
|
||
|
|
# 0.0.0.0 should not be used outside of test do blocks as it can be a security risk.
|
||
|
|
class ZeroZeroZeroZero < FormulaCop
|
||
|
|
sig { override.params(formula_nodes: FormulaNodes).void }
|
||
|
|
def audit_formula(formula_nodes)
|
||
|
|
return if formula_tap != "homebrew-core"
|
||
|
|
|
||
|
|
body_node = formula_nodes.body_node
|
||
|
|
return if body_node.nil?
|
||
|
|
|
||
|
|
test_block = find_block(body_node, :test)
|
||
|
|
|
||
|
|
# Find all string literals in the formula
|
||
|
|
body_node.each_descendant(:str) do |str_node|
|
||
|
|
content = string_content(str_node)
|
||
|
|
next unless content.include?("0.0.0.0")
|
||
|
|
next if test_block && str_node.ancestors.any?(test_block)
|
||
|
|
|
||
|
|
next if valid_ip_range?(content)
|
||
|
|
|
||
|
|
offending_node(str_node)
|
||
|
|
problem "Do not use 0.0.0.0 as it can be a security risk."
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
private
|
||
|
|
|
||
|
|
sig { params(content: String).returns(T::Boolean) }
|
||
|
|
def valid_ip_range?(content)
|
||
|
|
# Allow private IP ranges like 10.0.0.0, 172.16.0.0-172.31.255.255, 192.168.0.0-192.168.255.255
|
||
|
|
return true if content.match?(/\b(?:10|172\.(?:1[6-9]|2[0-9]|3[01])|192\.168)\.\d+\.\d+\b/)
|
||
|
|
# Allow IP range notation like 0.0.0.0-255.255.255.255
|
||
|
|
return true if content.match?(/\b0\.0\.0\.0\s*-\s*255\.255\.255\.255\b/)
|
||
|
|
|
||
|
|
false
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|