# HG changeset patch
# User Waqas Hussain <waqas20@gmail.com>
# Date 1314815053 -18000
# Node ID 916834f22d1bc12831c5871c35154935c7252d48
# Parent  98b258b7d5dcf6bb18ed00239c9a0a0f157a18e6
util.sasl.scram: Return proper error and don't touch datastores on empty username.

diff -r 98b258b7d5dc -r 916834f22d1b util/sasl/scram.lua
--- a/util/sasl/scram.lua	Tue Aug 30 17:51:36 2011 -0400
+++ b/util/sasl/scram.lua	Wed Aug 31 23:24:13 2011 +0500
@@ -90,7 +90,7 @@
 	
 	-- apply SASLprep
 	username = saslprep(username);
-	return username;
+	return username and #username>0 and username;
 end
 
 local function hashprep(hashname)