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File:  [LON-CAPA] / loncom / auth / londatecheck.pm
Revision 1.10: download - view: text, annotated - select for diffs
Mon Apr 25 21:40:33 2005 UTC (19 years ago) by albertel
Branches: MAIN
CVS tags: HEAD
- modifying the html access restriction code to produce normal headers and footers for a resource page

# Checks contentopen/close settings disable subsequent PerlHandlers if not open
# $Id: londatecheck.pm,v 1.10 2005/04/25 21:40:33 albertel Exp $
#
# Copyright Michigan State University Board of Trustees
#
# This file is part of the LearningOnline Network with CAPA (LON-CAPA).
#
# LON-CAPA is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# LON-CAPA is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with LON-CAPA; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
#
# /home/httpd/html/adm/gpl.txt
#
# http://www.lon-capa.org/
#

use strict;
package Apache::londatecheck;
use Apache::lonnet;
use Apache::lonlocal;
use Apache::Constants qw(:common :http :methods);

sub content_date_check {
    my $symb=$env{'request.symb'};
    my $open=&Apache::lonnet::EXT('resource.0.contentopen',$symb);
    my $close=&Apache::lonnet::EXT('resource.0.contentclose',$symb);
    if ( (defined($open)  && $open  ne '' && time < $open) ) {
	return ('CLOSED',$open,$close,
		'<h1>'.&mt('Not open to be viewed').'</h1>'.
		&mt("This resource currently isn't open. ".
		    "It will be available at [_1].",
		    &Apache::lonlocal::locallocaltime($open)));
    }
    if ( (defined($close) && $close ne '' && time > $close) ) {
	return ('CLOSED',$open,$close,
		'<h1>'.&mt('Not open to be viewed').'</h1>'.
		&mt("This resource is no longer available to be viewed."));
    }
    return ('OPEN',$open,$close);
}

sub handler {
    my ($r)=@_;
    if (&Apache::lonnet::allowed('bre',$r->uri) eq 'F') {
	return DECLINED;
    }
    my ($status,$open,$close,$msg)=&content_date_check();
    if ($status ne 'OPEN') {
	$r->set_handlers('PerlHandler'=>undef);
	&Apache::loncommon::content_type($r,'text/html');
	$r->send_http_header;
	return OK if $r->header_only;
	my $html=&Apache::lonxml::xmlbegin();
	$r->print($html.'<head><title>'.&mt("Not Open").'</title>');
	my $addentries=' onLoad="'.&Apache::lonmenu::loadevents().
	    '" onUnload="'.&Apache::lonmenu::unloadevents().'"';
	$r->print(&Apache::lonmenu::registerurl(1));
	$r->print('</head>'.&Apache::structuretags::body_tag_start('web'));
	$r->print($msg);
	$r->print(&Apache::lonxml::xmlend().'</html>');
	return OK;
    }
    return DECLINED;
}
1;
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