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Diff for /loncom/cgi/ping.pl between versions 1.4 and 1.7

version 1.4, 2003/02/25 20:50:31 version 1.7, 2008/11/28 20:50:25
Line 1 Line 1
 #!/usr/bin/perl  #!/usr/bin/perl
   
 # The LearningOnline Network with CAPA  
 # ping cgi-script  # ping cgi-script
   # $Id$
   #
   # 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/
   #
   
   use strict;
 $|=1;  $|=1;
   
 use lib '/home/httpd/lib/perl/';  use lib '/home/httpd/lib/perl/';
 use LONCAPA::Configuration;  use Apache::lonnet;
   use LONCAPA::loncgi;
   
 use IO::File;  print("Content-type: text/plain\n\n");
 use IO::Socket;  
   
 my %perlvar;  &main();
   
 # -------------------------------------------------- Non-critical communication  sub main {
 sub reply {      if (!&LONCAPA::loncgi::check_ipbased_access('ping')) {
     my ($cmd,$server)=@_;          if (!&LONCAPA::loncgi::check_cookie_and_load_env()) {
     my $peerfile="$perlvar{'lonSockDir'}/$server";              return;
     my $client=IO::Socket::UNIX->new(Peer    =>"$peerfile",          }
                                      Type    => SOCK_STREAM,  
                                      Timeout => 10)  
        or return "con_lost";  
     print $client "$cmd\n";  
     my $answer=<$client>;  
     chomp($answer);  
     if (!$answer) { $answer="con_lost"; }  
     return $answer;  
 }  
   
           if (!&LONCAPA::loncgi::can_view('ping')) {
               return;
           }
       }
   
 # --------------------- Read loncapa.conf (and by default loncapa_apache.conf).      my $testhost=$ENV{'QUERY_STRING'};
 my $perlvarref=LONCAPA::Configuration::read_conf('loncapa.conf');      $testhost=~s/\W//g;
 %perlvar=%{$perlvarref};  
 undef $perlvarref; # remove since sensitive and not needed  
 delete $perlvar{'lonReceipt'}; # remove since sensitive and not needed  
 delete $perlvar{'lonSqlAccess'}; # remove since sensitive and not needed  
   
 $testhost=$ENV{'QUERY_STRING'};      print &Apache::lonnet::reply('ping',$testhost)."\n";
 $testhost=~s/\W//g;      return;
   }
 print "Content-type: text/plain\n\n".  
       &reply('ping',$testhost)."\n";  
Removed from v.1.4  
changed lines
  Added in v.1.7

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