1: # The LearningOnline Network with CAPA
2: # Wrapper for external and binary files as standalone resources
3: #
4: # $Id: lonwrapper.pm,v 1.47 2014/05/20 11:47:06 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:
30: package Apache::lonwrapper;
31:
32: use strict;
33: use Apache::Constants qw(:common);
34: use Apache::lonenc();
35: use Apache::lonnet;
36: use Apache::lonlocal;
37: use Apache::loncommon();
38: use Apache::lonhtmlcommon();
39: use Apache::lonextresedit();
40:
41: # ================================================================ Main Handler
42: sub wrapper {
43: my ($url,$brcrum,$absolute,$is_ext,$is_pdf) = @_;
44:
45: my $forcereg;
46: unless ($env{'form.folderpath'}) {
47: $forcereg = 1;
48: }
49:
50: my %lt = &Apache::lonlocal::texthash(
51: 'noif' => 'No iframe support.',
52: 'show' => 'Show content in pop-up window',
53: );
54:
55: my $noiframe = &Apache::loncommon::modal_link($url,$lt{'show'},500,400);
56: my $args = {'bgcolor' => '#FFFFFF'};
57: if ($forcereg) {
58: $args->{'force_register'} = $forcereg;
59: }
60: if (ref($brcrum) eq 'ARRAY') {
61: $args->{'bread_crumbs'} = $brcrum;
62: }
63: if ($absolute) {
64: $args->{'use_absolute'} = $absolute;
65: }
66:
67: my $startpage = &Apache::loncommon::start_page('Menu',undef,$args);
68: my $endpage = &Apache::loncommon::end_page();
69:
70: if ($env{'browser.mobile'}) {
71: my $output = $startpage;
72: if ($is_pdf) {
73: my $title = $env{'form.title'};
74: if ($title eq '') {
75: unless ($env{'request.enc'}) {
76: ($title) = ($url =~ m{/([^/]+)$});
77: $title =~ s/(\?[^\?]+)$//;
78: }
79: }
80: unless ($title eq '') {
81: $output .= $title.'<br />';
82: }
83: $output .= '<a href="'.$url.'">'.&mt('Link to PDF (for mobile devices)').'</a>';
84: } else {
85: $output .= '<div style="overflow:scroll; -webkit-overflow-scrolling:touch;">'."\n".
86: '<iframe src="$url" height="100%" width="100%" frameborder="0">'."\n".
87: "$lt{'noif'} $noiframe\n".
88: "</iframe>\n".
89: "</div>\n";
90: $output .= '<iframe src="$url" height="100%" width="100%" frameborder="0">'."\n".
91: "$lt{'noif'} $noiframe\n".
92: '</iframe>';
93: }
94: $output .= $endpage;
95: return $output;
96: } else {
97: my $script = &Apache::lonhtmlcommon::scripttag(<<SCRIPT);
98: \$(document).ready( function() {
99: \$(window).unbind('resize').resize(function(){
100: var header;
101: var offset = 5;
102: var height = 0;
103: var hdrtop = 0;
104: if (\$('div.LC_head_subbox:first').length) {
105: header = \$('div.LC_head_subbox:first');
106: offset = 9;
107: } else {
108: if (\$('#LC_breadcrumbs').length) {
109: header = \$('#LC_breadcrumbs');
110: }
111: }
112: if (header.length) {
113: height = header.height();
114: hdrtop = header.position().top;
115: }
116: var pos = height + hdrtop + offset;
117: \$('.LC_iframecontainer').css('top', pos);
118: });
119: });
120: window.onload = function(){ \$(window).trigger('resize') };
121: SCRIPT
122: # javascript will position the iframe if window was resized (or zoomed)
123: return <<ENDFRAME;
124: $startpage
125: $script
126: <div class="LC_iframecontainer">
127: <iframe src="$url">$lt{'noif'} $noiframe</iframe>
128: </div>
129: $endpage
130: ENDFRAME
131: }
132: }
133:
134: sub handler {
135: my $r=shift;
136: &Apache::loncommon::content_type($r,'text/html');
137: $r->send_http_header;
138:
139: return OK if $r->header_only;
140:
141: my $url = $r->uri;
142: my ($is_ext,$brcrum,$absolute,$is_pdf);
143:
144: for ($url){
145: s|^/adm/wrapper||;
146: $is_ext = $_ =~ s|^/ext/|http://|;
147: s|http://https://|https://|;
148: s|:|:|g;
149: }
150:
151: if ($url =~ /\.pdf$/i) {
152: $is_pdf = 1;
153: }
154:
155: if ($is_ext) {
156: my $hostname = $r->hostname();
157: my $lonhost = &Apache::lonnet::host_from_dns($hostname);
158: if ($lonhost) {
159: my $actual = &Apache::lonnet::absolute_url($hostname);
160: my $expected = $Apache::lonnet::protocol{$lonhost}.'://'.$hostname;
161: unless ($actual eq $expected) {
162: $absolute = $expected;
163: }
164: }
165: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
166: ['forceedit','register','folderpath','symb','idx','title']);
167: if (($env{'form.forceedit'}) &&
168: (&Apache::lonnet::allowed('mdc',$env{'request.course.id'})) &&
169: (($env{'form.folderpath'} =~ /^supplemental/) ||
170: ($env{'form.symb'} =~ /^uploaded/))) {
171: $r->print(
172: &Apache::lonextresedit::display_editor($url,$env{'form.folderpath'},
173: $env{'form.symb'},
174: $env{'form.idx'}));
175: return OK;
176: } elsif ($env{'form.folderpath'} =~ /^supplemental/) {
177: my $crstype = &Apache::loncommon::course_type();
178: my $title = $env{'form.title'};
179: if ($title eq '') {
180: $title = &mt('External Resource');
181: }
182: $brcrum =
183: &Apache::lonhtmlcommon::docs_breadcrumbs(undef,$crstype,undef,$title,1);
184: }
185: }
186:
187: #
188: # Actual URL
189: #
190: if ($url=~/$LONCAPA::assess_re/) {
191: #
192: # This is uploaded homework
193: #
194: $env{'request.state'}='uploaded';
195: &Apache::lonhomework::renderpage($r,$url);
196: } else {
197: #
198: # This is not homework
199: #
200: if ($is_ext) {
201: $ENV{'QUERY_STRING'} =~ s/(^|\&)symb=[^\&]*/$1/;
202: $ENV{'QUERY_STRING'} =~ s/\&$//;
203: }
204:
205: unless ($ENV{'QUERY_STRING'} eq '') {
206: $url.=(($url=~/\?/)?'&':'?').$ENV{'QUERY_STRING'};
207: }
208:
209: # encrypt url if not external
210: &Apache::lonenc::check_encrypt(\$url) if $url !~ /^https?\:/ ;
211:
212: $r->print( wrapper($url,$brcrum,$absolute,$is_ext,$is_pdf) );
213:
214: } # not just the menu
215:
216: return OK;
217: } # handler
218:
219: 1;
220: __END__
221:
222: =pod
223:
224: =head1 NAME
225:
226: Apache::lonwrapper - External and binary file management.
227:
228: =head1 SYNOPSIS
229:
230: Wrapper for external and binary files as standalone resources. Edit handler for rat maps; TeX content handler.
231:
232: This is part of the LearningOnline Network with CAPA project
233: described at http://www.lon-capa.org.
234:
235: =head1 Subroutines
236:
237: =over
238:
239: =item wrapper($url,$brcrum,$absolute,$is_ext,$is_pdf))
240:
241: =over
242:
243: =item $url
244:
245: url to display by including in an iframe within a
246: LON-CAPA page which has a standard LON-CAPA inline menu.
247:
248: =item $brcrum
249:
250: breadcrumbs for unregistered urls
251: (i.e., external resources in Supplemental Content).
252:
253: =item $absolute
254:
255: contains protocol (http or https) followed by
256: the hostname, if menu items in the standard LON-CAPA
257: interface created by the call to loncommon::start_page()
258: within &wrapper() need to use absolute URLs rather than
259: relative URLs.
260:
261: That will be the case where an external resource has been
262: served from port 80, when the server customarily serves
263: requests using Apache/SSL (i.e., port 443). mod_rewrite
264: is used to switch requests for external resources
265: from https:// to http:// where the the URL of the remote site
266: specified in the resource itself is http://.
267:
268: This is done to avoid default mixed content blocking
269: in Firefox 23 and later, when serving from Apache/SSL.
270:
271: =item $is_ext
272:
273: true if URL is for an external resource.
274:
275: =item $is_pdf
276:
277: true if URL is for a PDF (based on file extension).
278:
279: =back
280:
281: Returns markup for the entire page.
282:
283: =item handler()
284:
285: =back
286:
287: =cut
288:
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/icons/back.gif){kind=icon}
Return to lonwrapper.pm CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [LON-CAPA] / rat