File:  [LON-CAPA] / loncom / auth / lonprotected.pm
Revision 1.2: download - view: text, annotated - select for diffs
Sat Feb 9 03:56:54 2019 UTC (5 years, 3 months ago) by raeburn
Branches: MAIN
CVS tags: version_2_12_X, version_2_11_4_msu, HEAD
- Typo

    1: # The LearningOnline Network
    2: # Information about deep-link only access for a resource
    3: #
    4: # $Id: lonprotected.pm,v 1.2 2019/02/09 03:56:54 raeburn Exp $
    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: package Apache::lonprotected;
   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;

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