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Annotation of loncom/cgi/ping.pl, revision 1.5

1.1       www         1: #!/usr/bin/perl
                      2: # ping cgi-script
1.5     ! albertel    3: # $Id: gplheader.pl,v 1.1 2001/11/29 18:19:27 www 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: #
1.1       www        27: 
                     28: 
                     29: $|=1;
                     30: 
1.2       harris41   31: use lib '/home/httpd/lib/perl/';
                     32: use LONCAPA::Configuration;
                     33: 
1.1       www        34: use IO::File;
                     35: use IO::Socket;
                     36: 
1.4       www        37: my %perlvar;
                     38: 
1.1       www        39: # -------------------------------------------------- Non-critical communication
                     40: sub reply {
                     41:     my ($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: 
1.3       harris41   55: # --------------------- Read loncapa.conf (and by default loncapa_apache.conf).
                     56: my $perlvarref=LONCAPA::Configuration::read_conf('loncapa.conf');
1.4       www        57: %perlvar=%{$perlvarref};
1.2       harris41   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
1.1       www        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";