Something might come up this afternoon for SLING-2803 [1]. :) [1] - https://issues.apache.org/jira/browse/SLING-2803
> As for validation: This is something we are sourely lacking in Sling > anyway. I think input validation is definitely something which should be > part of the default Sling POST Servlet processing. But it should also be a > feature, which is available independently for those cases, where the POST > request is fully handled outside of the POST servlet. >