Puppet Function: format_reject

Defined in:
lib/puppet/parser/functions/format_reject.rb
Function type:
Ruby 3.x API

Overview

format_reject() ⇒ Any

Returns:

  • (Any) 


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# File 'lib/puppet/parser/functions/format_reject.rb', line 2

newfunction(:format_reject, :type => :rvalue,:doc => <<-EOS
EOS
) do |args|
  rej = ''
  rej = args[0] if args[0].is_a?(String)

  ver = '4'
  ver = args[1][-1].chr if args[1][-1].chr == '6'

  return rej if rej == ''

  # create a translation table so reject types from iptables
  # and ip6tables can be used as interchangeably as possible,
  # though its not perfect.
  translations = {
    # v4 to v6 translations
    'icmp-net-unreachable' => 'icmp6-no-route',
    'icmp-host-unreachable' => 'icmp6-addr-unreachable',
    'icmp-port-unreachable' => 'icmp6-port-unreachable',
    'icmp-proto-unreachable' => 'icmp6-port-unreachable',
    'icmp-net-prohibited' => 'icmp6-adm-prohibited',
    'icmp-host-prohibited' => 'icmp6-adm-prohibited',
    'icmp-admin-prohibited' => 'icmp6-adm-prohibited',
    # v6 to v4 translations
    'icmp6-no-route' => 'icmp-net-unreachable',
    'no-route' => 'icmp-net-unreachable',
    'icmp6-adm-prohibited' => 'icmp-admin-prohibited',
    'adm-prohibited' => 'icmp-admin-prohibitied',
    'icmp6-addr-unreachable' => 'icmp-host-unreachable',
    'addr-unreach' => 'icmp-addr-unreachable',
    'icmp6-port-unreachable' => 'icmp-port-unreachable',
    'port-unreach' => 'icmp-port-unreachable'
  }

  valid_rejects = {
    '4' => [ 'icmp-net-unreachable', 'icmp-host-unreachable',
             'icmp-port-unreachable', 'icmp-proto-unreachable',
             'icmp-net-prohibited', 'icmp-host-prohibited',
             'icmp-admin-prohibited' ],
    '6' => [ 'icmp6-no-route', 'no-route', 'icmp6-adm-prohibited',
             'adm-prohibited', 'icmp6-addr-unreachable', 'addr-unreach',
             'icmp6-port-unreachable', 'port-unreach' ]
  }

  if ( ver == '4' and valid_rejects['6'].include?(rej) ) or
     ( ver == '6' and valid_rejects['4'].include?(rej) ) then
     rej = translations[rej]
  end
  return "--reject-with #{rej}"
end