version 1.3, 2002/09/09 14:18:56
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version 1.7, 2008/11/28 20:50:25
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#!/usr/bin/perl |
#!/usr/bin/perl |
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# The LearningOnline Network with CAPA |
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# ping cgi-script |
# ping cgi-script |
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# $Id$ |
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# |
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# Copyright Michigan State University Board of Trustees |
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# |
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# This file is part of the LearningOnline Network with CAPA (LON-CAPA). |
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# |
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# LON-CAPA is free software; you can redistribute it and/or modify |
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# it under the terms of the GNU General Public License as published by |
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# the Free Software Foundation; either version 2 of the License, or |
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# (at your option) any later version. |
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# |
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# LON-CAPA is distributed in the hope that it will be useful, |
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# but WITHOUT ANY WARRANTY; without even the implied warranty of |
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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# GNU General Public License for more details. |
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# |
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# You should have received a copy of the GNU General Public License |
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# along with LON-CAPA; if not, write to the Free Software |
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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# |
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# /home/httpd/html/adm/gpl.txt |
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# |
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# http://www.lon-capa.org/ |
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# |
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use strict; |
$|=1; |
$|=1; |
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use lib '/home/httpd/lib/perl/'; |
use lib '/home/httpd/lib/perl/'; |
use LONCAPA::Configuration; |
use Apache::lonnet; |
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use LONCAPA::loncgi; |
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use IO::File; |
print("Content-type: text/plain\n\n"); |
use IO::Socket; |
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# -------------------------------------------------- Non-critical communication |
&main(); |
sub reply { |
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my ($cmd,$server)=@_; |
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my $peerfile="$perlvar{'lonSockDir'}/$server"; |
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my $client=IO::Socket::UNIX->new(Peer =>"$peerfile", |
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Type => SOCK_STREAM, |
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Timeout => 10) |
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or return "con_lost"; |
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print $client "$cmd\n"; |
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my $answer=<$client>; |
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chomp($answer); |
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if (!$answer) { $answer="con_lost"; } |
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return $answer; |
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} |
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sub main { |
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if (!&LONCAPA::loncgi::check_ipbased_access('ping')) { |
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if (!&LONCAPA::loncgi::check_cookie_and_load_env()) { |
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return; |
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} |
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# --------------------- Read loncapa.conf (and by default loncapa_apache.conf). |
if (!&LONCAPA::loncgi::can_view('ping')) { |
my $perlvarref=LONCAPA::Configuration::read_conf('loncapa.conf'); |
return; |
my %perlvar=%{$perlvarref}; |
} |
undef $perlvarref; # remove since sensitive and not needed |
} |
delete $perlvar{'lonReceipt'}; # remove since sensitive and not needed |
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delete $perlvar{'lonSqlAccess'}; # remove since sensitive and not needed |
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$testhost=$ENV{'QUERY_STRING'}; |
my $testhost=$ENV{'QUERY_STRING'}; |
$testhost=~s/\W//g; |
$testhost=~s/\W//g; |
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print "Content-type: text/plain\n\n". |
print &Apache::lonnet::reply('ping',$testhost)."\n"; |
&reply('ping',$testhost)."\n"; |
return; |
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} |