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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, 8 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"

    1: #!/usr/bin/perl
    2: # Take machine offline, reroute traffic
    3: #
    4: # $Id: takeoffline.pl,v 1.1 2003/09/11 19:47:30 www 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: print "Content-type: text/html\n\n".
   30:       "<html><body bgcolor=#FFFFFF><h1>Take Offline</h1>";
   31: unless ($ENV{'QUERY_STRING'}) {
   32:     print 'No reroute server given, taking completely offline.';
   33:     &dead();
   34: } else {
   35:     $otherserver=$ENV{'QUERY_STRING'};
   36:     print 'Rerouting to '.$otherserver;
   37:     &reroute();
   38: }
   39: 
   40: print "</body></html>";
   41: 
   42: sub dead {
   43:     open (OUT,'>/home/httpd/html/index.html');
   44:     print OUT 'This LON-CAPA server is currently offline.';
   45:     close(OUT);
   46: }
   47: 
   48: sub reroute {
   49:     open (OUT,'>/home/httpd/html/index.html');
   50:     print OUT (<<ENDNEWINDEX);
   51: <html>
   52:  <head>
   53:   <title>Welcome to the LearningOnline Network with CAPA</title>
   54:   <meta HTTP-EQUIV="Refresh" CONTENT="0.5; url=http://$otherserver/adm/roles">
   55:  </head>
   56:  <body bgcolor="#004400" topmargin=0 leftmargin=0 marginwidth=0 marginheight=0>
   57:   <img src="/adm/lonIcons/header.gif" />
   58: <p><font color="#FFFFFF">Connecting to
   59: <a href="http://$otherserver/adm/roles"><font color="#FFFFFF">http://$otherserver/</font></a></font></p>
   60: </body>
   61: </html>
   62: ENDNEWINDEX
   63:    close(OUT);
   64: }
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