--- loncom/lonnet/perl/lonnet.pm	2011/08/09 01:35:24	1.1129
+++ 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 1.1129 2011/08/09 01:35:24 raeburn Exp $
+# $Id: lonnet.pm,v 1.1132 2011/09/16 22:24:01 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -348,7 +348,7 @@ sub get_remote_globals {
 
 sub remote_devalidate_cache {
     my ($lonhost,$name,$id) = @_;
-    my $response = &reply('devalidatecache',&escape($name).':'.&escape($id),$lonhost);
+    my $response = &reply('devalidatecache:'.&escape($name).':'.&escape($id),$lonhost);
     return $response;
 }
 
@@ -1242,7 +1242,7 @@ sub check_loadbalancing {
         my %domconfig =
             &Apache::lonnet::get_dom('configuration',['loadbalancing'],$dom_in_use);
         if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
-            $result = &do_cache_new('loadbalancing',$dom_in_use,$domconfig{'usersessions'}{'loadbalancing'},$cachetime);
+            $result = &do_cache_new('loadbalancing',$dom_in_use,$domconfig{'loadbalancing'},$cachetime);
         }
     }
     if (ref($result) eq 'HASH') {
@@ -1308,7 +1308,7 @@ sub check_loadbalancing {
             my %domconfig =
                 &Apache::lonnet::get_dom('configuration',['loadbalancing'],$serverhomedom);
             if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
-                $result = &do_cache_new('loadbalancing',$dom_in_use,$domconfig{'usersessions'}{'loadbalancing'},$cachetime);
+                $result = &do_cache_new('loadbalancing',$dom_in_use,$domconfig{'loadbalancing'},$cachetime);
             }
         }
         if (ref($result) eq 'HASH') {
@@ -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;
     }