--- loncom/auth/lonlogin.pm	2013/09/29 00:49:24	1.157
+++ loncom/auth/lonlogin.pm	2015/03/06 22:32:39	1.158.2.1
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # Login Screen
 #
-# $Id: lonlogin.pm,v 1.157 2013/09/29 00:49:24 raeburn Exp $
+# $Id: lonlogin.pm,v 1.158.2.1 2015/03/06 22:32:39 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -160,11 +160,13 @@ sub handler {
     if ($sessiondata{'username'}) {
         $authusername=$sessiondata{'username'};
     } else {
+        $env{'form.username'} = &Apache::loncommon::cleanup_html($env{'form.username'});
         $authusername=($env{'form.username'}?$env{'form.username'}:'');
     }
     if ($sessiondata{'domain'}) {
         $authdomain=$sessiondata{'domain'};
-    } else { 
+    } else {
+        $env{'form.domain'} = &Apache::loncommon::cleanup_html($env{'form.domain'});
         $authdomain=($env{'form.domain'}?$env{'form.domain'}:$domain);
     }
 
@@ -376,6 +378,29 @@ ENDSCRIPT
 	       alink        => "$alink",
                onload       => 'javascript:enableInput();',);
 
+    my %defaultdomconf = &Apache::loncommon::get_domainconf($defdom);
+    my $headextra = $defaultdomconf{$defdom.'.login.headtag_'.$lonhost};
+    my $headextra_exempt = $defaultdomconf{$domain.'.login.headtag_exempt_'.$lonhost};
+    if ($headextra) {
+        my $omitextra;
+        if ($headextra_exempt ne '') {
+            my @exempt = split(',',$headextra_exempt);
+            my $ip = $ENV{'REMOTE_ADDR'};
+            if (grep(/^\Q$ip\E$/,@exempt)) {
+                $omitextra = 1;
+            }
+        }
+        unless ($omitextra) {
+            my $confname = $defdom.'-domainconfig';
+            if ($headextra =~ m{^\Q/res/$defdom/$confname/login/headtag/$lonhost/\E}) {
+                my $extra = &Apache::lonnet::getfile(&Apache::lonnet::filelocation("",$headextra));
+                unless ($extra eq '-1') {
+                    $js .= "\n".$extra."\n";
+                }
+            }
+        }
+    }
+
     $r->print(&Apache::loncommon::start_page('The LearningOnline Network with CAPA Login',$js,
 			       { 'redirect'       => [$expire,'/adm/roles'], 
 				 'add_entries' => \%add_entries,