--- loncom/lonnet/perl/lonnet.pm	2011/08/17 00:32:27	1.1130
+++ loncom/lonnet/perl/lonnet.pm	2011/09/16 22:24:01	1.1132
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # TCP networking package
 #
-# $Id: lonnet.pm,v 1.1130 2011/08/17 00:32:27 raeburn Exp $
+# $Id: lonnet.pm,v 1.1132 2011/09/16 22:24:01 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -3986,7 +3986,7 @@ sub hashref2str {
       $result.='=';
       #print("Got a ref of ".(ref($key))." skipping.");
     } else {
-	if ($key) {$result.=&escape($key).'=';} else { last; }
+	if (defined($key)) {$result.=&escape($key).'=';} else { last; }
     }
 
     if(ref($hashref->{$key}) eq 'ARRAY') {
@@ -7075,6 +7075,13 @@ sub assignrole {
                     return 'refused';
                 }
             }
+        } elsif ($role eq 'au') {
+            if ($url ne '/'.$udom.'/') {
+                &logthis('Attempt by '.$env{'user.name'}.':'.$env{'user.domain'}.
+                         ' to assign author role for '.$uname.':'.$udom.
+                         ' in domain: '.$url.' refused (wrong domain).');
+                return 'refused';
+            }
         }
         $mrole=$role;
     }