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File:  [LON-CAPA] / loncom / cgi / takeoffline.pl
Revision 1.1: download - view: text, annotated - select for diffs
Thu Sep 11 19:47:30 2003 UTC (20 years, 7 months ago) by www
Branches: MAIN
CVS tags: HEAD
Script to re-route traffic from one LON-CAPA server to another in case of
weirdness.

Use:

 /cgi-bin/takeoffline.pl

puts up screen that server is kaputt

 /cgi-bin/takeoffline.pl?foo.bar.edu

reroute to foo.bar.edu

 /cgi-bin/takeonline.pl

restore normal welcome

Uses basic auth user "offline"

#!/usr/bin/perl
# Take machine offline, reroute traffic
#
# $Id: takeoffline.pl,v 1.1 2003/09/11 19:47:30 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/
#

print "Content-type: text/html\n\n".
      "<html><body bgcolor=#FFFFFF><h1>Take Offline</h1>";
unless ($ENV{'QUERY_STRING'}) {
    print 'No reroute server given, taking completely offline.';
    &dead();
} else {
    $otherserver=$ENV{'QUERY_STRING'};
    print 'Rerouting to '.$otherserver;
    &reroute();
}

print "</body></html>";

sub dead {
    open (OUT,'>/home/httpd/html/index.html');
    print OUT 'This LON-CAPA server is currently offline.';
    close(OUT);
}

sub reroute {
    open (OUT,'>/home/httpd/html/index.html');
    print OUT (<<ENDNEWINDEX);
<html>
 <head>
  <title>Welcome to the LearningOnline Network with CAPA</title>
  <meta HTTP-EQUIV="Refresh" CONTENT="0.5; url=http://$otherserver/adm/roles">
 </head>
 <body bgcolor="#004400" topmargin=0 leftmargin=0 marginwidth=0 marginheight=0>
  <img src="/adm/lonIcons/header.gif" />
<p><font color="#FFFFFF">Connecting to
<a href="http://$otherserver/adm/roles"><font color="#FFFFFF">http://$otherserver/</font></a></font></p>
</body>
</html>
ENDNEWINDEX
   close(OUT);
}
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