# The LearningOnline Network
# Logout Handler
#
# $Id: lonlogout.pm,v 1.20 2006/08/29 20:34:39 albertel 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;
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) {
return FORBIDDEN;
}
#check if cookie still valid
my $handle=$lonid->value;
$handle=~s/\W//g;
my $lonidsdir=$r->dir_config('lonIDsDir');
if ((!-e "$lonidsdir/$handle.id") || ($handle eq '')) {
$r->log_reason("Cookie $handle not valid", $r->filename);
return FORBIDDEN;
}
#we've got a valid user
my @profile;
my %sessionhash;
{
my $idf=Apache::File->new("$lonidsdir/$handle.id");
@profile=<$idf>;
}
my $envi;
for ($envi=0;$envi<=$#profile;$envi++) {
chomp($profile[$envi]);
my ($envname,$envvalue)=split(/=/,$profile[$envi]);
$sessionhash{$envname}=$envvalue;
}
unlink("$lonidsdir/$handle.id");
my %temp=('logout' => time);
&Apache::lonnet::put('email_status',\%temp);
&Apache::lonnet::log($sessionhash{'user.domain'},
$sessionhash{'user.name'},
$sessionhash{'user.home'},
"Logout $ENV{'REMOTE_ADDR'}");
&Apache::loncommon::content_type($r,'text/html');
$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,});
my %lt=&Apache::lonlocal::texthash('gb' => 'Goodbye',
'cw' => 'close this window',
'li' => 'log in again',
'pe' => 'Please either',
'or' => 'or');
my $login_url = '/adm/'.($env{'request.sso.login'} ? 'roles'
: 'login');
$relogmessage=(<<ENDRELOG);
<h1>$lt{'gb'}!</h1>
$lt{'pe'} <a href="javascript:self.close();">$lt{'cw'}</a> $lt{'or'}
<a href="$login_url?domain=$sessionhash{'user.domain'}">$lt{'li'}</a>.
ENDRELOG
if ($env{'request.sso.login'}
&& defined($r->dir_config('lonSSOUserLogoutMessageFile'))) {
open(my $fh,$r->dir_config('lonSSOUserLogoutMessageFile'));
$relogmessage.= join('',<$fh>);
}
}
my $end_page=&Apache::loncommon::end_page();
# --------------------------------------------------------------- Screen Output
$r->print(<<ENDDOCUMENT);
$start_page
$windowinfo
$relogmessage
$end_page
ENDDOCUMENT
&Apache::lonnet::flushcourselogs();
return OK;
}
1;
__END__
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