mirror of
https://github.com/inspec/inspec
synced 2024-12-18 09:03:12 +00:00
577688a3a0
Many of the resources are named as a top-level class with a fairly generic class name, such as "OS". This causes an issue specifically with kitchen-google which depends on a gem which depends on the "os" gem which itself defines an OS class with a different superclass. This prevents users from using TK, Google Compute, and Inspec without this fix. Some mocked commands had their digest changed as well due to the new indentation, specifically in the User and RegistryKey classes. I strongly recommend viewing this diff with `git diff --ignore-space-change` to see the *real* changes. :)
70 lines
2.4 KiB
Ruby
70 lines
2.4 KiB
Ruby
# encoding: utf-8
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# author: Christoph Hartmann
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# author: Dominik Richter
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# Usage:
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# describe iptables do
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# it { should have_rule('-P INPUT ACCEPT') }
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# end
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#
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# The following serverspec sytax is not implemented:
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# describe iptables do
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# it { should have_rule('-P INPUT ACCEPT').with_table('mangle').with_chain('INPUT') }
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# end
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# Please use the new sytax:
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# describe iptables(table:'mangle', chain: 'input') do
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# it { should have_rule('-P INPUT ACCEPT') }
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# end
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#
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# Note: Docker containers normally do not have iptables installed
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#
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# @see http://ipset.netfilter.org/iptables.man.html
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# @see http://ipset.netfilter.org/iptables.man.html
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# @see https://www.frozentux.net/iptables-tutorial/iptables-tutorial.html
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module Inspec::Resources
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class IpTables < Inspec.resource(1)
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name 'iptables'
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desc 'Use the iptables InSpec audit resource to test rules that are defined in iptables, which maintains tables of IP packet filtering rules. There may be more than one table. Each table contains one (or more) chains (both built-in and custom). A chain is a list of rules that match packets. When the rule matches, the rule defines what target to assign to the packet.'
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example "
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describe iptables do
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it { should have_rule('-P INPUT ACCEPT') }
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end
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"
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def initialize(params = {})
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@table = params[:table]
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@chain = params[:chain]
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# we're done if we are on linux
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return if inspec.os.linux?
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# ensures, all calls are aborted for non-supported os
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@iptables_cache = []
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skip_resource 'The `iptables` resource is not supported on your OS yet.'
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end
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def has_rule?(rule = nil, _table = nil, _chain = nil)
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# checks if the rule is part of the ruleset
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# for now, we expect an exact match
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retrieve_rules.any? { |line| line.casecmp(rule) == 0 }
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end
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def retrieve_rules
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return @iptables_cache if defined?(@iptables_cache)
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# construct iptables command to read all rules
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table_cmd = "-t #{@table}" if @table
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iptables_cmd = format('iptables %s -S %s', table_cmd, @chain).strip
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cmd = inspec.command(iptables_cmd)
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return [] if cmd.exit_status.to_i != 0
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# split rules, returns array or rules
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@iptables_cache = cmd.stdout.split("\n").map(&:strip)
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end
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def to_s
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format('Iptables %s %s', @table && "table: #{@table}", @chain && "chain: #{@chain}").strip
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end
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end
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end
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