--- loncom/auth/lonlogin.pm	2015/06/06 14:40:28	1.158.2.4
+++ loncom/auth/lonlogin.pm	2017/10/14 20:59:35	1.158.2.6.2.1
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # Login Screen
 #
-# $Id: lonlogin.pm,v 1.158.2.4 2015/06/06 14:40:28 raeburn Exp $
+# $Id: lonlogin.pm,v 1.158.2.6.2.1 2017/10/14 20:59:35 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -38,6 +38,7 @@ use Apache::lonlocal;
 use Apache::migrateuser();
 use lib '/home/httpd/lib/perl/';
 use LONCAPA;
+use CGI::Cookie();
  
 sub handler {
     my $r = shift;
@@ -56,9 +57,35 @@ sub handler {
 	return &Apache::migrateuser::handler($r);
     }
 
+# For "public user" - remove any exising "public" cookie, as user really wants to log-in
+    my ($handle,$lonidsdir,$expirepub,$userdom);
+    unless ($r->header_only) {
+        $handle = &Apache::lonnet::check_for_valid_session($r,'lonID',undef,\$userdom);
+        if ($handle ne '') {
+            $lonidsdir=$r->dir_config('lonIDsDir');
+            if ($handle=~/^publicuser\_/) {
+                unlink($r->dir_config('lonIDsDir')."/$handle.id");
+                undef($handle);
+                undef($userdom);
+                $expirepub = 1;
+            }
+        }
+    }
+
     &Apache::loncommon::no_cache($r);
     &Apache::lonlocal::get_language_handle($r);
     &Apache::loncommon::content_type($r,'text/html');
+    if ($expirepub) {
+        my $c = new CGI::Cookie(-name    => 'lonID',
+                                -value   => '',
+                                -expires => '-10y',);
+        $r->header_out('Set-cookie' => $c);
+    } elsif (($handle eq '') && ($userdom ne '')) {
+        my $c = new CGI::Cookie(-name    => 'lonID',
+                                -value   => '',
+                                -expires => '-10y',);
+        $r->headers_out->add('Set-cookie' => $c);
+    }
     $r->send_http_header;
     return OK if $r->header_only;
 
@@ -70,6 +97,23 @@ sub handler {
 	return OK;
     }
 
+#
+# If browser sent an old cookie for which the session file had been removed
+# check if configuration for user's domain has a portal URL set.  If so
+# switch user's log-in to the portal.
+#
+
+    if (($handle eq '') && ($userdom ne '')) {
+        my %domdefaults = &Apache::lonnet::get_domain_defaults($userdom);
+        if ($domdefaults{'portal_def'} =~ /^https?\:/) {
+            my $start_page = &Apache::loncommon::start_page('Switching Server ...',undef,
+                                          {'redirect' => [0,$domdefaults{'portal_def'}],});
+            my $end_page   = &Apache::loncommon::end_page();
+            $r->print($start_page.$end_page);
+            return OK;
+        }
+    }
+
     $env{'form.firsturl'} =~ s/(`)/'/g;
 
 # -------------------------------- Prevent users from attempting to login twice
@@ -353,11 +397,7 @@ lextkey=this.document.client.elements.le
 initkeys();
 
 this.document.server.elements.upass0.value
-    =crypted(this.document.client.elements.upass$now.value.substr(0,15));
-this.document.server.elements.upass1.value
-    =crypted(this.document.client.elements.upass$now.value.substr(15,15));
-this.document.server.elements.upass2.value
-    =crypted(this.document.client.elements.upass$now.value.substr(30,15));
+    =getCrypted(this.document.client.elements.upass$now.value);
 
 this.document.client.elements.uname.value='';
 this.document.client.elements.upass$now.value='';
@@ -472,8 +512,6 @@ ENDSCRIPT
    <input type="hidden" name="serverid" value="$lonhost" />
    <input type="hidden" name="uname" value="" />
    <input type="hidden" name="upass0" value="" />
-   <input type="hidden" name="upass1" value="" />
-   <input type="hidden" name="upass2" value="" />
    <input type="hidden" name="udom" value="" />
    <input type="hidden" name="localpath" value="$env{'form.localpath'}" />
    <input type="hidden" name="localres" value="$env{'form.localres'}" />
@@ -524,7 +562,7 @@ LFORM
         $r->print(<<HEADER);
 <!-- The LON-CAPA Header -->
 <div style="background:$pgbg;margin:0;width:100%;">
-  <img src="$img" border="0" alt="The Learning Online Network with CAPA" />
+  <img src="$img" border="0" alt="The Learning Online Network with CAPA" class="LC_maxwidth" />
 </div>
 HEADER
     }
@@ -548,7 +586,7 @@ HEADER
 <div>
 ENDTOP
     if ($showmainlogo) {
-        $r->print(' <img src="'.$logo.'" alt="" />'."\n");
+        $r->print(' <img src="'.$logo.'" alt="" class="LC_maxwidth" />'."\n");
     }
 $r->print(<<ENDTOP);
 $announcements