version 1.2, 2002/05/11 21:31:41
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version 1.9, 2011/10/17 17:23:25
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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; |
$|=1; |
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use lib '/home/httpd/lib/perl/'; |
use lib '/home/httpd/lib/perl/'; |
use LONCAPA::Configuration; |
use Apache::lonnet; |
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use LONCAPA::loncgi; |
use IO::File; |
use LONCAPA::lonauthcgi; |
use IO::Socket; |
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print("Content-type: text/plain\n\n"); |
# -------------------------------------------------- Non-critical communication |
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sub reply { |
&main(); |
my ($cmd,$server)=@_; |
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my $peerfile="$perlvar{'lonSockDir'}/$server"; |
sub main { |
my $client=IO::Socket::UNIX->new(Peer =>"$peerfile", |
my $remote_ip = $ENV{'REMOTE_ADDR'}; |
Type => SOCK_STREAM, |
my $allowed; |
Timeout => 10) |
my @hosts = &Apache::lonnet::get_hosts_from_ip($remote_ip); |
or return "con_lost"; |
if (@hosts > 0) { |
print $client "$cmd\n"; |
$allowed = 1; |
my $answer=<$client>; |
} elsif (&LONCAPA::lonauthcgi::check_ipbased_access('ping',$remote_ip)) { |
chomp($answer); |
$allowed = 1; |
if (!$answer) { $answer="con_lost"; } |
} elsif (&LONCAPA::loncgi::check_cookie_and_load_env()) { |
return $answer; |
if (&LONCAPA::lonauthcgi::can_view('ping')) { |
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$allowed = 1; |
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} |
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} |
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if ($allowed) { |
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my $testhost=$ENV{'QUERY_STRING'}; |
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$testhost=~s/\W//g; |
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if (&Apache::lonnet::hostname($testhost) ne '') { |
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print &Apache::lonnet::reply('ping',$testhost)."\n"; |
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} else { |
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print 'unknown_host'; |
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} |
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} else { |
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print 'forbidden'; |
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} |
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return; |
} |
} |
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# ------------------------------------------- Read access.conf and loncapa.conf |
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my $perlvarref=LONCAPA::Configuration::read_conf('access.conf','loncapa.conf'); |
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my %perlvar=%{$perlvarref}; |
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undef $perlvarref; # remove since sensitive and not needed |
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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=$ENV{'QUERY_STRING'}; |
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$testhost=~s/\W//g; |
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print "Content-type: text/plain\n\n". |
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&reply('ping',$testhost)."\n"; |
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