--- loncom/auth/lonlogout.pm	2000/06/07 19:31:05	1.1
+++ loncom/auth/lonlogout.pm	2008/05/13 15:06:34	1.31
@@ -1,9 +1,30 @@
 # The LearningOnline Network
 # Logout Handler
-# (Cookie Based Access Handler
-# 5/21/99,5/22,5/29,5/31,6/15,16/11,22/11,
-# 01/06,01/13 Gerd Kortemeyer)
-# 05/31 Gerd Kortemeyer
+#
+# $Id: lonlogout.pm,v 1.31 2008/05/13 15:06:34 www Exp $
+#
+# Copyright Michigan State University Board of Trustees
+#
+# This file is part of the LearningOnline Network with CAPA (LON-CAPA).
+#
+# LON-CAPA is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# LON-CAPA is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with LON-CAPA; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+#
+# /home/httpd/html/adm/gpl.txt
+#
+# http://www.lon-capa.org/
+#
 
 package Apache::lonlogout;
 
@@ -11,52 +32,108 @@ use strict;
 use Apache::Constants qw(:common);
 use Apache::File;
 use Apache::lonnet;
+use Apache::lonmenu;
 use CGI::Cookie();
+use Apache::lonlocal;
 
 sub handler {
     my $r = shift;
 
+    #Check for cookie
     my $requrl=$r->uri;
-    my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
-    my $lonid=$cookies{'lonID'};
-    my $cookie;
-    if ($lonid) {
-	my $handle=$lonid->value;
-        $handle=~s/\W//g;
-        my $lonidsdir=$r->dir_config('lonIDsDir');
-        if ((-e "$lonidsdir/$handle.id") && ($handle ne '')) {
-           my @profile;
-           my %sessionhash;
-	    {
-             my $idf=Apache::File->new("$lonidsdir/$handle.id");
-             @profile=<$idf>;
+    my $handle = &Apache::lonnet::check_for_valid_session($r);
+    #check if cookie still valid
+    if ($handle eq '') {
+	$r->log_reason("Cookie $handle not valid", $r->filename); 
+	return FORBIDDEN;
+    }
+
+    #we've got a valid user
+    #any locks in place?
+    my $locknum=&Apache::lonnet::get_locks();
+    if ($locknum) { return 409; }
+    #nope, go ahead
+    my @profile;
+    my $lonidsdir=$r->dir_config('lonIDsDir');
+    &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
+    unlink("$lonidsdir/$handle.id");
+    my %temp=('logout' => time);
+    &Apache::lonnet::put('email_status',\%temp);
+    &Apache::lonnet::log($env{'user.domain'},
+			 $env{'user.name'},
+			 $env{'user.home'},
+			 "Logout $ENV{'REMOTE_ADDR'}");
+
+    &Apache::loncommon::content_type($r,'text/html');
+
+    #expire the cookie
+    my $c = new CGI::Cookie(-name    => 'lonID',
+			    -value   => '',
+			    -expires => '-10y',);
+    $r->header_out('Set-cookie' => $c);
+
+    $r->send_http_header;
+    return OK if $r->header_only;
+# -------------------------------------------------------- Menu script and info
+
+    my $windowinfo=&Apache::lonmenu::close();
+    $windowinfo.=&Apache::lonnavmaps::close();
+# ---------------------------------------------------------------- Get handover
+    &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['handover']);
+    my $switch='';
+    my $start_page='';
+    my $relogmessage='';
+    if ($env{'form.handover'}) {
+	$switch='<meta HTTP-EQUIV="Refresh" CONTENT="0.5; url='.
+	    $env{'form.handover'}.'">';
+	$start_page=&Apache::loncommon::start_page('Switching Server ...',
+						   $switch);
+    } else {
+	$start_page=&Apache::loncommon::start_page('Logged Out',undef,
+						   {'no_inline_link' => 1,});
+	
+	$relogmessage.='<h1>'.&mt('Goodbye').'</h1>';
+
+	if (!$env{'request.sso.norelogin'}) {
+	    my $relogin_server;
+	    if ($env{'request.sso.reloginserver'}) {
+		$relogin_server = $env{'request.sso.reloginserver'};
 	    }
-            my $envi;
-            for ($envi=0;$envi<=$#profile;$envi++) {
-		chomp($profile[$envi]);
-		my ($envname,$envvalue)=split(/=/,$profile[$envi]);
-                $sessionhash{$envname}=$envvalue;
-            }
-            unlink("$lonidsdir/$handle.id");
-	    &Apache::lonnet::log($sessionhash{'user.domain'},
-                                 $sessionhash{'user.name'},
-                                 $sessionhash{'user.home'},
-                                 "Logout $ENV{'REMOTE_ADDR'}");
-            $r->content_type('text/html');
-            $r->send_http_header;
-            return OK if $r->header_only;
-            $r->print(<<ENDDOCUMENT);
-<html>
-<head><title>The LearningOnline Network with CAPA Logout</title></head>
-<body bgcolor="#FFFFFF"><h1>Goodbye!</h1></body>
-</html>
-ENDDOCUMENT
-            return OK; 
-        } else { 
-            $r->log_reason("Cookie $handle not valid", $r->filename); 
+	    my $login_url = $relogin_server.'/adm/'.
+		($env{'request.sso.login'} ? 'roles': 'login');
+
+	    $relogmessage.=&mt('Please either [_1]close this window[_2] or [_3]log in again[_4].'
+                              ,'<a href="javascript:self.close();">','</a>'
+                              ,'<a href="'.$login_url.'?domain='.$env{'user.domain'}.'">','</a>');
         }
+	my $domain = $env{'user.domain'};
+        if ($env{'request.sso.login'}
+	    && defined($r->dir_config("lonSSOUserLogoutMessageFile_$domain"))) {
+	    open(my $fh,$r->dir_config("lonSSOUserLogoutMessageFile_$domain"));
+	    $relogmessage.= join('',<$fh>);
+	}
+	if ($env{'request.sso.login'}
+	    && defined($r->dir_config('lonSSOUserLogoutMessageFile'))) {
+	    open(my $fh,$r->dir_config('lonSSOUserLogoutMessageFile'));
+	    $relogmessage.= join('',<$fh>);
+	}
+
     }
-    return FORBIDDEN;
+    my $end_page=&Apache::loncommon::end_page();
+# --------------------------------------------------------------- Screen Output
+    $r->print(<<ENDDOCUMENT);
+$start_page
+$windowinfo
+$relogmessage
+$end_page
+ENDDOCUMENT
+    $r->register_cleanup(\&flush_course_logs);
+    return OK; 
+}
+
+sub flush_course_logs {
+    &Apache::lonnet::flushcourselogs();
+    return OK;
 }
 
 1;