--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mod_jid_prep/mod_jid_prep.lua	Wed May 08 23:30:50 2013 +0100
@@ -0,0 +1,28 @@
+-- Run JIDs through stringprep processing on behalf of clients
+-- http://xmpp.org/extensions/inbox/jidprep.html
+
+local jid_prep = require "util.jid".prep;
+local st = require "util.stanza";
+
+local xmlns_prep = "urn:xmpp:jidprep:tmp";
+
+function prep_jid(event)
+	local stanza = event.stanza;
+	local jid = jid_prep(stanza:get_child_text("jid", xmlns_prep));
+	if not jid then
+		return event.origin.send(st.error_reply(stanza, "modify", "jid-malformed"));
+	end
+	return event.origin.send(st.reply(stanza):tag("jid", { xmlns = xmlns_prep }):text(jid));
+end
+
+
+module:hook("iq/host/"..xmlns_prep..":jid", prep_jid);
+
+module:depends("http");
+module:provides("http", {
+	route = {
+		["GET /*"] = function (event, jid)
+			return jid_prep(jid) or 400;
+		end;
+	}
+});