1: # The LearningOnline Network
2: # Logout Handler
3: #
4: # $Id: lonlogout.pm,v 1.26 2007/08/18 00:34:27 albertel Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28:
29: package Apache::lonlogout;
30:
31: use strict;
32: use Apache::Constants qw(:common);
33: use Apache::File;
34: use Apache::lonnet;
35: use Apache::lonmenu;
36: use CGI::Cookie();
37: use Apache::lonlocal;
38:
39: sub handler {
40: my $r = shift;
41:
42: #Check for cookie
43: my $requrl=$r->uri;
44: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
45: my $lonid=$cookies{'lonID'};
46: my $cookie;
47: if (!$lonid) {
48: return FORBIDDEN;
49: }
50:
51: #check if cookie still valid
52: my $handle=&LONCAPA::clean_handle($lonid->value);
53: my $lonidsdir=$r->dir_config('lonIDsDir');
54: if ((!-e "$lonidsdir/$handle.id") || ($handle eq '')) {
55: $r->log_reason("Cookie $handle not valid", $r->filename);
56: return FORBIDDEN;
57: }
58:
59: #we've got a valid user
60: my @profile;
61: &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
62: unlink("$lonidsdir/$handle.id");
63: my %temp=('logout' => time);
64: &Apache::lonnet::put('email_status',\%temp);
65: &Apache::lonnet::log($env{'user.domain'},
66: $env{'user.name'},
67: $env{'user.home'},
68: "Logout $ENV{'REMOTE_ADDR'}");
69:
70: &Apache::loncommon::content_type($r,'text/html');
71:
72: #expire the cookie
73: my $c = new CGI::Cookie(-name => 'lonID',
74: -value => '',
75: -expires => '-10y',);
76: $r->header_out('Set-cookie' => $c);
77:
78: $r->send_http_header;
79: return OK if $r->header_only;
80: # -------------------------------------------------------- Menu script and info
81:
82: my $windowinfo=&Apache::lonmenu::close();
83: $windowinfo.=&Apache::lonnavmaps::close();
84: # ---------------------------------------------------------------- Get handover
85: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['handover']);
86: my $switch='';
87: my $start_page='';
88: my $relogmessage='';
89: if ($env{'form.handover'}) {
90: $switch='<meta HTTP-EQUIV="Refresh" CONTENT="0.5; url='.
91: $env{'form.handover'}.'">';
92: $start_page=&Apache::loncommon::start_page('Switching Server ...',
93: $switch);
94: } else {
95: $start_page=&Apache::loncommon::start_page('Logged Out',undef,
96: {'no_inline_link' => 1,});
97: my %lt=&Apache::lonlocal::texthash('gb' => 'Goodbye',
98: 'cw' => 'close this window',
99: 'li' => 'log in again',
100: 'pe' => 'Please either',
101: 'or' => 'or');
102:
103: $relogmessage.=(<<ENDRELOG);
104: <h1>$lt{'gb'}!</h1>
105: ENDRELOG
106:
107: if (!$env{'request.sso.norelogin'}) {
108: my $relogin_server;
109: if ($env{'request.sso.reloginserver'}) {
110: $relogin_server = $env{'request.sso.reloginserver'};
111: }
112: my $login_url = $relogin_server.'/adm/'.
113: ($env{'request.sso.login'} ? 'roles': 'login');
114:
115: $relogmessage.=(<<ENDRELOG);
116: $lt{'pe'} <a href="javascript:self.close();">$lt{'cw'}</a> $lt{'or'}
117: <a href="$login_url?domain=$env{'user.domain'}">$lt{'li'}</a>.
118: ENDRELOG
119:
120: }
121: my $domain = $env{'user.domain'};
122: if ($env{'request.sso.login'}
123: && defined($r->dir_config("lonSSOUserLogoutMessageFile_$domain"))) {
124: open(my $fh,$r->dir_config("lonSSOUserLogoutMessageFile_$domain"));
125: $relogmessage.= join('',<$fh>);
126: }
127: if ($env{'request.sso.login'}
128: || defined($r->dir_config('lonSSOUserLogoutMessageFile'))) {
129: open(my $fh,$r->dir_config('lonSSOUserLogoutMessageFile'));
130: $relogmessage.= join('',<$fh>);
131: }
132:
133: }
134: my $end_page=&Apache::loncommon::end_page();
135: # --------------------------------------------------------------- Screen Output
136: $r->print(<<ENDDOCUMENT);
137: $start_page
138: $windowinfo
139: $relogmessage
140: $end_page
141: ENDDOCUMENT
142: &Apache::lonnet::flushcourselogs();
143: return OK;
144: }
145:
146: 1;
147: __END__
148:
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