patched version of pw_hash.rb working with puppetserver and jruby

0_pw_hash.rb

require 'puppet/parser/functions'

module Puppet::Parser::Functions
    newfunction(:pw_hash, :type => :rvalue, :doc => "Returns the hash of a password."
  ) do |args|
    raise Puppet::ParseError, "pw_hash takes exactly two arguments," +
    "#{args.length} provided" if args.length != 2
    pwd = args[0]
    slt = args[1]

    # walk around jruby bug on String::crypt
    if RUBY_PLATFORM == "java" and "test".crypt('$1$1') != "$1$1$Bp8CU9Oujr9SSEw53WV6G."
	# yum install apache-commons-codec.noarch
        require '/usr/share/java/commons-codec.jar'
        def pwd.crypt(salt)
            org.apache.commons.codec.digest.Crypt.crypt(self.to_java_bytes, salt)
        end
    end
    pwd.crypt("$6$#{slt}")
  end
end

1_example.pp

user { 'root':
	ensure => present,
	password => pw_hash($root_pw, $root_salt),
}