--- /dev/null
+# hash a string as mysql's "PASSWORD()" function would do it
+require 'digest/md5'
+
+module Puppet::Parser::Functions
+ newfunction(:postgresql_password, :type => :rvalue, :doc => <<-EOS
+ Returns the postgresql password hash from the clear text username / password.
+ EOS
+ ) do |args|
+
+ raise(Puppet::ParseError, "postgresql_password(): Wrong number of arguments " +
+ "given (#{args.size} for 2)") if args.size != 2
+
+ username = args[0]
+ password = args[1]
+
+ 'md5' + Digest::MD5.hexdigest(password + username)
+ end
+end