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File:  [LON-CAPA] / loncom / cgi / ping.pl
Revision 1.5: download - view: text, annotated - select for diffs
Mon Sep 1 03:37:27 2003 UTC (20 years, 8 months ago) by albertel
Branches: MAIN
CVS tags: version_2_3_X, version_2_3_2, version_2_3_1, version_2_3_0, version_2_2_X, version_2_2_99_1, version_2_2_99_0, version_2_2_2, version_2_2_1, version_2_2_0, version_2_1_X, version_2_1_99_3, version_2_1_99_2, version_2_1_99_1, version_2_1_99_0, version_2_1_3, version_2_1_2, version_2_1_1, version_2_1_0, version_2_0_X, version_2_0_99_1, version_2_0_2, version_2_0_1, version_2_0_0, version_1_99_3, version_1_99_2, version_1_99_1_tmcc, version_1_99_1, version_1_99_0_tmcc, version_1_99_0, version_1_3_X, version_1_3_3, version_1_3_2, version_1_3_1, version_1_3_0, version_1_2_X, version_1_2_99_1, version_1_2_99_0, version_1_2_1, version_1_2_0, version_1_1_X, version_1_1_99_5, version_1_1_99_4, version_1_1_99_3, version_1_1_99_2, version_1_1_99_1, version_1_1_99_0, version_1_1_3, version_1_1_2, version_1_1_1, version_1_1_0, version_1_0_99_3, version_1_0_99_2, version_1_0_99_1, version_1_0_99, HEAD
- adding more GPL headers

    1: #!/usr/bin/perl
    2: # ping cgi-script
    3: # $Id: ping.pl,v 1.5 2003/09/01 03:37:27 albertel 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: 
   29: $|=1;
   30: 
   31: use lib '/home/httpd/lib/perl/';
   32: use LONCAPA::Configuration;
   33: 
   34: use IO::File;
   35: use IO::Socket;
   36: 
   37: my %perlvar;
   38: 
   39: # -------------------------------------------------- Non-critical communication
   40: sub reply {
   41:     my ($cmd,$server)=@_;
   42:     my $peerfile="$perlvar{'lonSockDir'}/$server";
   43:     my $client=IO::Socket::UNIX->new(Peer    =>"$peerfile",
   44:                                      Type    => SOCK_STREAM,
   45:                                      Timeout => 10)
   46:        or return "con_lost";
   47:     print $client "$cmd\n";
   48:     my $answer=<$client>;
   49:     chomp($answer);
   50:     if (!$answer) { $answer="con_lost"; }
   51:     return $answer;
   52: }
   53: 
   54: 
   55: # --------------------- Read loncapa.conf (and by default loncapa_apache.conf).
   56: my $perlvarref=LONCAPA::Configuration::read_conf('loncapa.conf');
   57: %perlvar=%{$perlvarref};
   58: undef $perlvarref; # remove since sensitive and not needed
   59: delete $perlvar{'lonReceipt'}; # remove since sensitive and not needed
   60: delete $perlvar{'lonSqlAccess'}; # remove since sensitive and not needed
   61: 
   62: $testhost=$ENV{'QUERY_STRING'};
   63: $testhost=~s/\W//g;
   64: 
   65: print "Content-type: text/plain\n\n".
   66:       &reply('ping',$testhost)."\n";
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