Puppet Function: nslookup

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

Overview

nslookup() ⇒ Any

Lookup a hostname and return its ip addresses

Returns:

  • (Any) 


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# File 'lib/puppet/parser/functions/nslookup.rb', line 15

newfunction(:nslookup, :type => :rvalue, :doc => <<-EOS
Lookup a hostname and return its ip addresses
  EOS
) do |vals|
  hostname, type = vals
  raise(ArgumentError, 'Must specify a hostname') unless hostname
  type = 'AAAA' unless type
  
  require 'ipaddr'
  
  if (ip = IPAddr.new(hostname) rescue nil)
    if (ip.ipv6? and type == 'AAAA') or (ip.ipv4? and type != 'AAAA')
      return hostname
    else
      return []
    end
  end

  typeConst = Resolv::DNS::Resource::IN.const_get "#{type.upcase}"
  out = []
  
  Resolv::DNS.open do |dns|
    dns.getresources(hostname, typeConst).collect {|r| 
      out << IPAddr::new_ntoh(r.address.address).to_s
    }
  end

  return out
end