Annotation of rat/lonwrapper.pm, revision 1.45
1.1 www 1: # The LearningOnline Network with CAPA
2: # Wrapper for external and binary files as standalone resources
3: #
1.45 ! raeburn 4: # $Id: lonwrapper.pm,v 1.44 2013/09/07 19:58:08 raeburn Exp $
1.4 www 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: #
1.1 www 28:
1.29 jms 29:
1.1 www 30: package Apache::lonwrapper;
31:
32: use strict;
33: use Apache::Constants qw(:common);
1.38 droeschl 34: use Apache::lonenc();
1.18 albertel 35: use Apache::lonnet;
1.42 raeburn 36: use Apache::lonlocal;
37: use Apache::loncommon();
38: use Apache::lonhtmlcommon();
39: use Apache::lonextresedit();
1.1 www 40:
41: # ================================================================ Main Handler
1.21 albertel 42: sub wrapper {
1.45 ! raeburn 43: my ($url,$brcrum,$absolute,$is_ext) = @_;
1.23 albertel 44:
1.42 raeburn 45: my $forcereg;
46: unless ($env{'form.folderpath'}) {
47: $forcereg = 1;
48: }
49:
50: my $args = {'bgcolor' => '#FFFFFF'};
51: if ($forcereg) {
52: $args->{'force_register'} = $forcereg;
53: }
54: if (ref($brcrum) eq 'ARRAY') {
1.45 ! raeburn 55: $args->{'bread_crumbs'} = $brcrum;
1.42 raeburn 56: }
1.44 raeburn 57: if ($absolute) {
58: $args->{'use_absolute'} = $absolute;
59: }
1.42 raeburn 60:
61: my $startpage = Apache::loncommon::start_page('Menu',undef,$args);
1.38 droeschl 62: my $endpage = Apache::loncommon::end_page();
63:
1.39 droeschl 64: my $script = Apache::lonhtmlcommon::scripttag(<<SCRIPT );
1.38 droeschl 65: \$(document).ready( function() {
66: \$(window).unbind('resize').resize(function(){
1.42 raeburn 67: var header;
68: var offset = 5;
69: var height = 0;
70: var hdrtop = 0;
71: if (\$('div.LC_head_subbox:first').length) {
72: header = \$('div.LC_head_subbox:first');
73: offset = 9;
74: } else {
75: if (\$('#LC_breadcrumbs').length) {
76: header = \$('#LC_breadcrumbs');
77: }
78: }
79: if (header.length) {
80: height = header.height();
81: hdrtop = header.position().top;
82: }
83: var pos = height + hdrtop + offset;
1.39 droeschl 84: \$('.LC_iframecontainer').css('top', pos);
1.38 droeschl 85: });
86: });
1.39 droeschl 87: window.onload = function(){ \$(window).trigger('resize') };
88: SCRIPT
1.38 droeschl 89:
1.39 droeschl 90: # javascript will position the iframe if window was resized (or zoomed)
91: return <<ENDFRAME;
92: $startpage
93: $script
1.38 droeschl 94: <div class="LC_iframecontainer">
95: <iframe src="$url">No iframe support!</iframe>
96: </div>
97: $endpage
98: ENDFRAME
1.21 albertel 99: }
100:
101: sub handler {
102: my $r=shift;
103: &Apache::loncommon::content_type($r,'text/html');
104: $r->send_http_header;
105:
106: return OK if $r->header_only;
107:
1.38 droeschl 108: my $url = $r->uri;
1.44 raeburn 109: my ($is_ext,$brcrum,$absolute);
1.38 droeschl 110:
111: for ($url){
112: s|^/adm/wrapper||;
113: $is_ext = $_ =~ s|^/ext/|http://|;
114: s|http://https://|https://|;
115: s|:|:|g;
1.21 albertel 116: }
117:
1.42 raeburn 118: if ($is_ext) {
1.44 raeburn 119: my $hostname = $r->hostname();
120: my $lonhost = &Apache::lonnet::host_from_dns($hostname);
121: if ($lonhost) {
122: my $actual = &Apache::lonnet::absolute_url($hostname);
123: my $expected = $Apache::lonnet::protocol{$lonhost}.'://'.$hostname;
124: unless ($actual eq $expected) {
125: $absolute = $expected;
126: }
127: }
1.42 raeburn 128: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
129: ['forceedit','register','folderpath','symb','idx','title']);
130: if (($env{'form.forceedit'}) &&
131: (&Apache::lonnet::allowed('mdc',$env{'request.course.id'})) &&
132: (($env{'form.folderpath'} =~ /^supplemental/) ||
133: ($env{'form.symb'} =~ /^uploaded/))) {
134: $r->print(
135: &Apache::lonextresedit::display_editor($url,$env{'form.folderpath'},
136: $env{'form.symb'},
137: $env{'form.idx'}));
138: return OK;
139: } elsif ($env{'form.folderpath'} =~ /^supplemental/) {
140: my $crstype = &Apache::loncommon::course_type();
1.43 raeburn 141: my $title = $env{'form.title'};
142: if ($title eq '') {
143: $title = &mt('External Resource');
144: }
1.42 raeburn 145: $brcrum =
1.43 raeburn 146: &Apache::lonhtmlcommon::docs_breadcrumbs(undef,$crstype,undef,$title,1);
1.42 raeburn 147: }
148: }
149:
1.21 albertel 150: #
151: # Actual URL
152: #
1.41 www 153: if ($url=~/$LONCAPA::assess_re/) {
1.21 albertel 154: #
155: # This is uploaded homework
156: #
1.38 droeschl 157: $env{'request.state'}='uploaded';
158: &Apache::lonhomework::renderpage($r,$url);
1.21 albertel 159: } else {
160: #
161: # This is not homework
162: #
1.38 droeschl 163: if ($is_ext) {
164: $ENV{'QUERY_STRING'} =~ s/(^|\&)symb=[^\&]*/$1/;
1.42 raeburn 165: $ENV{'QUERY_STRING'} =~ s/\&$//;
1.38 droeschl 166: }
167:
1.35 raeburn 168: unless ($ENV{'QUERY_STRING'} eq '') {
1.38 droeschl 169: $url.=(($url=~/\?/)?'&':'?').$ENV{'QUERY_STRING'};
1.35 raeburn 170: }
1.38 droeschl 171:
172: # encrypt url if not external
173: &Apache::lonenc::check_encrypt(\$url) if $url !~ /^https?\:/ ;
174:
1.45 ! raeburn 175: $r->print( wrapper($url,$brcrum,$absolute,$is_ext) );
1.38 droeschl 176:
1.21 albertel 177: } # not just the menu
1.38 droeschl 178:
1.21 albertel 179: return OK;
1.13 www 180: } # handler
1.1 www 181:
182: 1;
183: __END__
184:
1.30 jms 185: =pod
1.1 www 186:
1.30 jms 187: =head1 NAME
188:
189: Apache::lonwrapper - External and binary file management.
190:
191: =head1 SYNOPSIS
192:
193: Wrapper for external and binary files as standalone resources. Edit handler for rat maps; TeX content handler.
194:
195: This is part of the LearningOnline Network with CAPA project
196: described at http://www.lon-capa.org.
197:
198: =head1 Subroutines
199:
200: =over
201:
1.45 ! raeburn 202: =item wrapper($url,$brcrum,$absolute,$is_ext)
1.30 jms 203:
1.45 ! raeburn 204: =over
! 205:
! 206: =item $url
! 207:
! 208: url to display by including in an iframe within a
! 209: LON-CAPA page which has a standard LON-CAPA inline menu.
! 210:
! 211: =item $brcrum
! 212:
! 213: breadcrumbs for unregistered urls
1.42 raeburn 214: (i.e., external resources in Supplemental Content).
1.45 ! raeburn 215:
! 216: =item $absolute
! 217:
! 218: contains protocol (http or https) followed by
! 219: the hostname, if menu items in the standard LON-CAPA
! 220: interface created by the call to loncommon::start_page()
! 221: within &wrapper() need to use absolute URLs rather than
! 222: relative URLs.
! 223:
! 224: That will be the case where an external resource has been
! 225: served from port 80, when the server customarily serves
! 226: requests using Apache/SSL (i.e., port 443). mod_rewrite
! 227: is used to switch requests for external resources
! 228: from https:// to http:// where the the URL of the remote site
! 229: specified in the resource itself is http://.
! 230:
! 231: This is done to avoid default mixed content blocking
! 232: in Firefox 23 and later, when serving from Apache/SSL.
! 233:
! 234: =item $is_ext
! 235:
! 236: true if URL is for an external resource.
! 237:
! 238: =back
! 239:
1.38 droeschl 240: Returns markup for the entire page.
1.30 jms 241:
242: =item handler()
243:
244: =back
245:
246: =cut
1.1 www 247:
248:
249:
250:
251:
1.29 jms 252:
253:
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