Puppet Function: extlib::cidr_to_netmask

Defined in:
lib/puppet/functions/extlib/cidr_to_netmask.rb
Function type:
Ruby 4.x API

Summary

Converts an CIDR address of the form 192.168.0.1/24 into its netmask.

Overview

extlib::cidr_to_netmask(Variant[Stdlib::IP::Address::V4::CIDR,Stdlib::IP::Address::V6::CIDR] $ip) ⇒ Variant[Stdlib::IP::Address::V4::Nosubnet,Stdlib::IP::Address::V6::Nosubnet]

Imported by Tim ‘bastelfreak’ Meusel into voxpupuli/extlib because Yelp/netstdlib got abandoned

Examples:

calling the function

extlib::cidr_to_netmask('127.0.0.1/8')

Parameters:

  • ip (Variant[Stdlib::IP::Address::V4::CIDR,Stdlib::IP::Address::V6::CIDR]) —

    IPv6 or IPv4 address in CIDR notation

Returns:

  • (Variant[Stdlib::IP::Address::V4::Nosubnet,Stdlib::IP::Address::V6::Nosubnet]) —

    IPv6 or IPv4 netmask address



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# File 'lib/puppet/functions/extlib/cidr_to_netmask.rb', line 7

Puppet::Functions.create_function(:'extlib::cidr_to_netmask') do
  # @param ip IPv6 or IPv4 address in CIDR notation
  # @return IPv6 or IPv4 netmask address
  # @example calling the function
  #   extlib::cidr_to_netmask('127.0.0.1/8')
  dispatch :cidr_to_netmask do
    param 'Variant[Stdlib::IP::Address::V4::CIDR,Stdlib::IP::Address::V6::CIDR]', :ip
    return_type 'Variant[Stdlib::IP::Address::V4::Nosubnet,Stdlib::IP::Address::V6::Nosubnet]'
  end

  def cidr_to_netmask(ip)
    # IPAddr has no getter for the subnetmask, but inspect() returns it
    IPAddr.new(ip).inspect.gsub(%r{.*/(.*)>}, '\1')
  end
end