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

1.1       raeburn     1: # The LearningOnline Network
                      2: # Information about deep-link only access for a resource
                      3: #
1.2     ! raeburn     4: # $Id: lonprotected.pm,v 1.1 2019/01/27 16:02:43 raeburn Exp $
1.1       raeburn     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: 
1.2     ! raeburn    29: package Apache::lonprotected;
1.1       raeburn    30: 
                     31: use strict;
                     32: use Apache::Constants qw(:common :http REDIRECT);
                     33: use Apache::lonnet;
                     34: use Apache::loncommon();
                     35: use Apache::lonlocal;
                     36: 
                     37: sub handler {
                     38:     my $r = shift;
                     39:     &Apache::loncommon::content_type($r,'text/html');
                     40:     $r->send_http_header;
                     41:     return OK if $r->header_only;
                     42: 
                     43:     &Apache::lonlocal::get_language_handle($r);
                     44:     my $origurl = $r->uri;
                     45: 
                     46:     my ($blocktext,$title);
                     47:     if ($origurl eq '/adm/protected') {
                     48:         $blocktext = '<div>'.
                     49:                      &mt('This page is displayed when access is blocked to course/community content, in the case where access via a deep-link is required.').
                     50:                      '<br />'.&mt("The restriction to access via a deep-link which can be set for specific content or a folder in a course does not apply to course personnel with elevated privileges in the course.").
                     51:                      '<div>';
                     52:         $title = 'Access Information';
                     53:     } elsif ($env{'request.course.id'}) {
                     54:         my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
                     55:         my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
                     56:         $blocktext = '<h2>'.&mt('Access denied').'</h2>'."\n".
                     57:                      '<div>'.
                     58:                      &mt('The resource you are trying to display must be accessed via a link to the resource from a web page external to LON-CAPA ').
                     59:                      '</div>';
                     60:        $title = 'Access Blocked';
                     61:     } else {
                     62:         my $server = &Apache::lonnet::absolute_url();
                     63:         $r->header_out(Location => $server.$origurl);
                     64:         return REDIRECT;
                     65:     }
                     66:     $r->print(&Apache::loncommon::start_page($title));
                     67:     $r->print($blocktext);
                     68:     $r->print(&Apache::loncommon::end_page());
                     69:     return OK;
                     70: }
                     71: 
                     72: sub setup_handler {
                     73:     my ($r) = @_;
                     74:     $r->set_handlers('PerlHandler'=>
                     75:                      [\&Apache::lonprotected::handler]);
                     76:     $r->handler('perl-script');
                     77: }
                     78: 
                     79: 1;