1: #!/usr/bin/perl
2: # ping cgi-script
3: # $Id: ping.pl,v 1.7 2008/11/28 20:50:25 raeburn Exp $
4: #
5: # Copyright Michigan State University Board of Trustees
6: #
7: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
8: #
9: # LON-CAPA is free software; you can redistribute it and/or modify
10: # it under the terms of the GNU General Public License as published by
11: # the Free Software Foundation; either version 2 of the License, or
12: # (at your option) any later version.
13: #
14: # LON-CAPA is distributed in the hope that it will be useful,
15: # but WITHOUT ANY WARRANTY; without even the implied warranty of
16: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17: # GNU General Public License for more details.
18: #
19: # You should have received a copy of the GNU General Public License
20: # along with LON-CAPA; if not, write to the Free Software
21: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22: #
23: # /home/httpd/html/adm/gpl.txt
24: #
25: # http://www.lon-capa.org/
26: #
27:
28: use strict;
29: $|=1;
30:
31: use lib '/home/httpd/lib/perl/';
32: use Apache::lonnet;
33: use LONCAPA::loncgi;
34:
35: print("Content-type: text/plain\n\n");
36:
37: &main();
38:
39: sub main {
40: if (!&LONCAPA::loncgi::check_ipbased_access('ping')) {
41: if (!&LONCAPA::loncgi::check_cookie_and_load_env()) {
42: return;
43: }
44:
45: if (!&LONCAPA::loncgi::can_view('ping')) {
46: return;
47: }
48: }
49:
50: my $testhost=$ENV{'QUERY_STRING'};
51: $testhost=~s/\W//g;
52:
53: print &Apache::lonnet::reply('ping',$testhost)."\n";
54: return;
55: }
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