version 1.4, 2003/02/25 20:50:31
|
version 1.8, 2008/12/25 01:56:03
|
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 LONCAPA::lonauthcgi; |
|
|
|
print("Content-type: text/plain\n\n"); |
|
|
|
&main(); |
|
|
|
sub main { |
|
if (!&LONCAPA::lonauthcgi::check_ipbased_access('ping')) { |
|
if (!&LONCAPA::loncgi::check_cookie_and_load_env()) { |
|
return; |
|
} |
|
|
|
if (!&LONCAPA::lonauthcgi::can_view('ping')) { |
|
return; |
|
} |
|
} |
|
|
use IO::File; |
my $testhost=$ENV{'QUERY_STRING'}; |
use IO::Socket; |
$testhost=~s/\W//g; |
|
|
my %perlvar; |
print &Apache::lonnet::reply('ping',$testhost)."\n"; |
|
return; |
# -------------------------------------------------- Non-critical communication |
|
sub reply { |
|
my ($cmd,$server)=@_; |
|
my $peerfile="$perlvar{'lonSockDir'}/$server"; |
|
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; |
|
} |
} |
|
|
|
|
# --------------------- Read loncapa.conf (and by default loncapa_apache.conf). |
|
my $perlvarref=LONCAPA::Configuration::read_conf('loncapa.conf'); |
|
%perlvar=%{$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'}; |
|
$testhost=~s/\W//g; |
|
|
|
print "Content-type: text/plain\n\n". |
|
&reply('ping',$testhost)."\n"; |
|