version 1.2, 2001/07/05 15:54:02
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version 1.45, 2013/10/15 10:17:19
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# The LearningOnline Network with CAPA |
# The LearningOnline Network with CAPA |
# Wrapper for external and binary files as standalone resources |
# Wrapper for external and binary files as standalone resources |
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# (Edit Handler for RAT Maps |
# $Id$ |
# (TeX Content Handler |
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# |
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# 05/29/00,05/30 Gerd Kortemeyer) |
# Copyright Michigan State University Board of Trustees |
# 7/1,6/30 Gerd Kortemeyer) |
# |
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# This file is part of the LearningOnline Network with CAPA (LON-CAPA). |
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# |
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# LON-CAPA is free software; you can redistribute it and/or modify |
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# it under the terms of the GNU General Public License as published by |
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# the Free Software Foundation; either version 2 of the License, or |
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# (at your option) any later version. |
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# |
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# LON-CAPA is distributed in the hope that it will be useful, |
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# but WITHOUT ANY WARRANTY; without even the implied warranty of |
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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# GNU General Public License for more details. |
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# |
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# You should have received a copy of the GNU General Public License |
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# along with LON-CAPA; if not, write to the Free Software |
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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# |
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# /home/httpd/html/adm/gpl.txt |
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# |
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# http://www.lon-capa.org/ |
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# 7/5 Gerd Kortemeyer |
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package Apache::lonwrapper; |
package Apache::lonwrapper; |
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use strict; |
use strict; |
use Apache::Constants qw(:common); |
use Apache::Constants qw(:common); |
use Apache::lonnet(); |
use Apache::lonenc(); |
use Apache::lonxml(); |
use Apache::lonnet; |
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use Apache::lonlocal; |
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use Apache::loncommon(); |
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use Apache::lonhtmlcommon(); |
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use Apache::lonextresedit(); |
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# ================================================================ Main Handler |
# ================================================================ Main Handler |
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sub wrapper { |
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my ($url,$brcrum,$absolute,$is_ext) = @_; |
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sub handler { |
my $forcereg; |
my $r=shift; |
unless ($env{'form.folderpath'}) { |
$r->content_type('text/html'); |
$forcereg = 1; |
$r->send_http_header; |
} |
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return OK if $r->header_only; |
my $args = {'bgcolor' => '#FFFFFF'}; |
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if ($forcereg) { |
my $url=$r->uri; |
$args->{'force_register'} = $forcereg; |
$url=~s/^\/adm\/wrapper//; |
} |
my $events='onLoad="'.&Apache::lonxml::loadevents. |
if (ref($brcrum) eq 'ARRAY') { |
'" onUnload="'.&Apache::lonxml::unloadevents.'"'; |
$args->{'bread_crumbs'} = $brcrum; |
my $script=&Apache::lonxml::registerurl(1); |
} |
$r->print(<<ENDDOCUMENT); |
if ($absolute) { |
<html> |
$args->{'use_absolute'} = $absolute; |
<head> |
} |
$script |
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</head> |
my $startpage = Apache::loncommon::start_page('Menu',undef,$args); |
<frameset rows="1,*" border=0 $events> |
my $endpage = Apache::loncommon::end_page(); |
<frame src="/adm/rat/empty.html"> |
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<frame src="$url"> |
my $script = Apache::lonhtmlcommon::scripttag(<<SCRIPT ); |
</frameset> |
\$(document).ready( function() { |
</html> |
\$(window).unbind('resize').resize(function(){ |
ENDDOCUMENT |
var header; |
return OK; |
var offset = 5; |
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var height = 0; |
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var hdrtop = 0; |
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if (\$('div.LC_head_subbox:first').length) { |
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header = \$('div.LC_head_subbox:first'); |
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offset = 9; |
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} else { |
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if (\$('#LC_breadcrumbs').length) { |
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header = \$('#LC_breadcrumbs'); |
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} |
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} |
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if (header.length) { |
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height = header.height(); |
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hdrtop = header.position().top; |
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} |
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var pos = height + hdrtop + offset; |
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\$('.LC_iframecontainer').css('top', pos); |
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}); |
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}); |
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window.onload = function(){ \$(window).trigger('resize') }; |
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SCRIPT |
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# javascript will position the iframe if window was resized (or zoomed) |
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return <<ENDFRAME; |
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$startpage |
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$script |
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<div class="LC_iframecontainer"> |
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<iframe src="$url">No iframe support!</iframe> |
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</div> |
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$endpage |
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ENDFRAME |
} |
} |
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sub handler { |
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my $r=shift; |
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&Apache::loncommon::content_type($r,'text/html'); |
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$r->send_http_header; |
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return OK if $r->header_only; |
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my $url = $r->uri; |
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my ($is_ext,$brcrum,$absolute); |
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for ($url){ |
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s|^/adm/wrapper||; |
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$is_ext = $_ =~ s|^/ext/|http://|; |
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s|http://https://|https://|; |
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s|:|:|g; |
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} |
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if ($is_ext) { |
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my $hostname = $r->hostname(); |
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my $lonhost = &Apache::lonnet::host_from_dns($hostname); |
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if ($lonhost) { |
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my $actual = &Apache::lonnet::absolute_url($hostname); |
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my $expected = $Apache::lonnet::protocol{$lonhost}.'://'.$hostname; |
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unless ($actual eq $expected) { |
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$absolute = $expected; |
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} |
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} |
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&Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'}, |
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['forceedit','register','folderpath','symb','idx','title']); |
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if (($env{'form.forceedit'}) && |
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(&Apache::lonnet::allowed('mdc',$env{'request.course.id'})) && |
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(($env{'form.folderpath'} =~ /^supplemental/) || |
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($env{'form.symb'} =~ /^uploaded/))) { |
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$r->print( |
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&Apache::lonextresedit::display_editor($url,$env{'form.folderpath'}, |
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$env{'form.symb'}, |
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$env{'form.idx'})); |
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return OK; |
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} elsif ($env{'form.folderpath'} =~ /^supplemental/) { |
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my $crstype = &Apache::loncommon::course_type(); |
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my $title = $env{'form.title'}; |
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if ($title eq '') { |
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$title = &mt('External Resource'); |
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} |
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$brcrum = |
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&Apache::lonhtmlcommon::docs_breadcrumbs(undef,$crstype,undef,$title,1); |
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} |
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} |
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# |
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# Actual URL |
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# |
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if ($url=~/$LONCAPA::assess_re/) { |
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# |
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# This is uploaded homework |
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# |
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$env{'request.state'}='uploaded'; |
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&Apache::lonhomework::renderpage($r,$url); |
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} else { |
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# |
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# This is not homework |
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# |
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if ($is_ext) { |
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$ENV{'QUERY_STRING'} =~ s/(^|\&)symb=[^\&]*/$1/; |
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$ENV{'QUERY_STRING'} =~ s/\&$//; |
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} |
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unless ($ENV{'QUERY_STRING'} eq '') { |
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$url.=(($url=~/\?/)?'&':'?').$ENV{'QUERY_STRING'}; |
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} |
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# encrypt url if not external |
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&Apache::lonenc::check_encrypt(\$url) if $url !~ /^https?\:/ ; |
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$r->print( wrapper($url,$brcrum,$absolute,$is_ext) ); |
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} # not just the menu |
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return OK; |
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} # handler |
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1; |
1; |
__END__ |
__END__ |
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=pod |
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=head1 NAME |
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Apache::lonwrapper - External and binary file management. |
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=head1 SYNOPSIS |
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Wrapper for external and binary files as standalone resources. Edit handler for rat maps; TeX content handler. |
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This is part of the LearningOnline Network with CAPA project |
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described at http://www.lon-capa.org. |
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=head1 Subroutines |
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=over |
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=item wrapper($url,$brcrum,$absolute,$is_ext) |
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=over |
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=item $url |
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url to display by including in an iframe within a |
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LON-CAPA page which has a standard LON-CAPA inline menu. |
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=item $brcrum |
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breadcrumbs for unregistered urls |
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(i.e., external resources in Supplemental Content). |
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=item $absolute |
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contains protocol (http or https) followed by |
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the hostname, if menu items in the standard LON-CAPA |
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interface created by the call to loncommon::start_page() |
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within &wrapper() need to use absolute URLs rather than |
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relative URLs. |
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That will be the case where an external resource has been |
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served from port 80, when the server customarily serves |
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requests using Apache/SSL (i.e., port 443). mod_rewrite |
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is used to switch requests for external resources |
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from https:// to http:// where the the URL of the remote site |
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specified in the resource itself is http://. |
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This is done to avoid default mixed content blocking |
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in Firefox 23 and later, when serving from Apache/SSL. |
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=item $is_ext |
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true if URL is for an external resource. |
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=back |
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Returns markup for the entire page. |
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=item handler() |
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=back |
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=cut |
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