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Annotation of loncom/lonnet/perl/londns.pm, revision 1.7

1.1       albertel    1: # The LearningOnline Network with CAPA
                      2: # A debugging harness.
                      3: #
1.7     ! raeburn     4: # $Id: londns.pm,v 1.6 2018/07/30 14:39:51 raeburn Exp $
1.1       albertel    5: #
                      6: # Copyright Michigan State University Board of Trustees
                      7: #
                      8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
                      9: #
                     10: # LON-CAPA is free software; you can redistribute it and/or modify
                     11: # it under the terms of the GNU General Public License as published by
                     12: # the Free Software Foundation; either version 2 of the License, or
                     13: # (at your option) any later version.
                     14: #
                     15: # LON-CAPA is distributed in the hope that it will be useful,
                     16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
                     17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
                     18: # GNU General Public License for more details.
                     19: #
                     20: # You should have received a copy of the GNU General Public License
                     21: # along with LON-CAPA; if not, write to the Free Software
                     22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
                     23: #
                     24: # /home/httpd/html/adm/gpl.txt
                     25: #
                     26: # http://www.lon-capa.org/
                     27: #
                     28: #
                     29: 
                     30: package Apache::londns;
                     31: 
                     32: use strict;
                     33: use LONCAPA;
1.6       raeburn    34: use Apache::Constants qw(:common :http :remotehost);
1.1       albertel   35: use Apache::lonnet;
                     36: 
                     37: sub serve_file {
1.5       raeburn    38:     my ($r,$dir,$file,$type)=@_;
                     39:     if (($dir eq '') || ($file eq '')) {
                     40:         return FORBIDDEN;
                     41:     }
                     42:     if (open(my $config,"<","$dir/$file")) {
1.4       raeburn    43:         my $contents = join('',<$config>);
1.7     ! raeburn    44:         close($config);
1.4       raeburn    45:         $r->content_type($type);
                     46:         $r->send_http_header;
                     47:         return OK if $r->header_only;
                     48:         $r->print($contents);
                     49:         return OK;
                     50:     } else {
                     51:         return FORBIDDEN;
                     52:     }
1.1       albertel   53: }
                     54: 
                     55: sub handler {
                     56:     my ($r) = @_;
                     57: 
1.6       raeburn    58:     my $reqhost = $r->get_remote_host(REMOTE_NOLOOKUP);
                     59:     my @hostids= &Apache::lonnet::get_hosts_from_ip($reqhost);
                     60:     if (!@hostids && $reqhost ne '127.0.0.1' ) {
                     61:         $r->log_reason("Unable to find a host for ".
                     62:                        $r->get_remote_host(REMOTE_NOLOOKUP));
                     63:         return FORBIDDEN;
                     64:     }
                     65: 
1.1       albertel   66:     my $command = (split('/',$r->uri))[3];
1.7     ! raeburn    67:     my ($dir,$file) = &Apache::lonnet::parse_getdns_url($command,$r->uri);
        !            68:     my %types = (
        !            69:                     hosts      => 'loncapa/hosts',
        !            70:                     domain     => 'loncapa/domain',
        !            71:                     checksums  => 'loncapa/versions',
        !            72:                     loncapaCRL => 'application/x-pem-file',
        !            73:                 );
        !            74:     if (exists($types{$command})) {
        !            75:         return &serve_file($r,$dir,$file,$types{$command});
1.1       albertel   76:     }
                     77:     return FORBIDDEN;
                     78: }
                     79: 
                     80: 
                     81: 1;