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Annotation of loncom/auth/lonipcheck.pm, revision 1.2

1.1       raeburn     1: # Checks IP access settings - disable subsequent PerlHandlers if client IP blocked
1.2     ! raeburn     2: # $Id: lonipcheck.pm,v 1.1 2008/09/05 17:43:31 raeburn Exp $
1.1       raeburn     3: #
                      4: # Copyright Michigan State University Board of Trustees
                      5: #
                      6: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
                      7: #
                      8: # LON-CAPA is free software; you can redistribute it and/or modify
                      9: # it under the terms of the GNU General Public License as published by
                     10: # the Free Software Foundation; either version 2 of the License, or
                     11: # (at your option) any later version.
                     12: #
                     13: # LON-CAPA is distributed in the hope that it will be useful,
                     14: # but WITHOUT ANY WARRANTY; without even the implied warranty of
                     15: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
                     16: # GNU General Public License for more details.
                     17: #
                     18: # You should have received a copy of the GNU General Public License
                     19: # along with LON-CAPA; if not, write to the Free Software
                     20: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
                     21: #
                     22: # /home/httpd/html/adm/gpl.txt
                     23: #
                     24: # http://www.lon-capa.org/
                     25: #
                     26: 
                     27: use strict;
                     28: package Apache::lonipcheck;
                     29: use Apache::lonnet;
                     30: use Apache::lonlocal;
                     31: use Apache::loncommon();
                     32: use Apache::Constants qw(:common :http :methods);
                     33: 
                     34: sub ip_access_check {
                     35:     my $symb=$env{'request.symb'};
                     36:     if ($env{'request.state'} ne "construct") {
                     37:         my $idacc = &Apache::lonnet::EXT('resource.0.acc',$symb);
                     38:         my $allowed=&Apache::loncommon::check_ip_acc($idacc);
                     39:         if (!$allowed) {
                     40:             return('INVALID_ACCESS',
                     41:                    '<h1>'.&mt('Not open to be viewed').'</h1>'.
                     42:                    &mt("This resource can not be accessed from your location."));
                     43: 
                     44:         }
                     45:     }
                     46:     return ('OPEN');
                     47: }
                     48: 
                     49: sub handler {
                     50:     my ($r)=@_;
                     51:     if (&Apache::lonnet::allowed('bre',$r->uri) eq 'F') {
                     52: 	return DECLINED;
                     53:     }
1.2     ! raeburn    54:     if (($r->uri =~ /ext\.tool$/) &&
        !            55:         (&Apache::lonnet::EXT('resource.0.gradable',$env{'request.symb'}) =~ /^yes$/i)) {
        !            56:         return DECLINED;
        !            57:     }
1.1       raeburn    58:     my ($status,$msg)=&ip_access_check();
                     59:     if ($status ne 'OPEN') {
                     60: 	$r->set_handlers('PerlHandler'=>undef);
                     61: 	&Apache::loncommon::content_type($r,'text/html');
                     62: 	$r->send_http_header;
                     63: 	return OK if $r->header_only;
                     64: 	my $start_page =
                     65: 	    &Apache::loncommon::start_page('Not Open',undef,
                     66: 					   {'bgcolor'        => '#FFFFFF',
                     67: 					    'force_register' => 1,});
                     68: 	my $end_page = &Apache::loncommon::end_page();
                     69: 	$r->print($start_page.$msg.$end_page);
                     70: 
                     71: 	return OK;
                     72:     }
                     73:     return DECLINED;
                     74: }
                     75: 1;