Annotation of rat/lonwrapper.pm, revision 1.46
1.1 www 1: # The LearningOnline Network with CAPA
2: # Wrapper for external and binary files as standalone resources
3: #
1.46 ! raeburn 4: # $Id: lonwrapper.pm,v 1.45 2013/10/15 10:17:19 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:
1.46 ! raeburn 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);
1.42 raeburn 56: my $args = {'bgcolor' => '#FFFFFF'};
57: if ($forcereg) {
58: $args->{'force_register'} = $forcereg;
59: }
60: if (ref($brcrum) eq 'ARRAY') {
1.45 raeburn 61: $args->{'bread_crumbs'} = $brcrum;
1.42 raeburn 62: }
1.44 raeburn 63: if ($absolute) {
64: $args->{'use_absolute'} = $absolute;
65: }
1.42 raeburn 66:
1.46 ! raeburn 67: my $startpage = &Apache::loncommon::start_page('Menu',undef,$args);
! 68: my $endpage = &Apache::loncommon::end_page();
1.38 droeschl 69:
1.46 ! raeburn 70: if ($env{'browser.mobile'}) {
! 71: return <<ENDFRAME;
! 72: $startpage
! 73: <div style="overflow:scroll; -webkit-overflow-scrolling:touch;">
! 74: <iframe src="$url" height="100%" width="100%" frameborder="0">
! 75: $lt{'noif'} $noiframe
! 76: </iframe>
! 77: </div>
! 78: $endpage
! 79: ENDFRAME
! 80: } else {
! 81: my $script = &Apache::lonhtmlcommon::scripttag(<<SCRIPT);
! 82: \$(document).ready( function() {
! 83: \$(window).unbind('resize').resize(function(){
! 84: var header;
! 85: var offset = 5;
! 86: var height = 0;
! 87: var hdrtop = 0;
! 88: if (\$('div.LC_head_subbox:first').length) {
! 89: header = \$('div.LC_head_subbox:first');
! 90: offset = 9;
! 91: } else {
! 92: if (\$('#LC_breadcrumbs').length) {
! 93: header = \$('#LC_breadcrumbs');
! 94: }
! 95: }
! 96: if (header.length) {
! 97: height = header.height();
! 98: hdrtop = header.position().top;
1.42 raeburn 99: }
1.46 ! raeburn 100: var pos = height + hdrtop + offset;
! 101: \$('.LC_iframecontainer').css('top', pos);
! 102: });
1.38 droeschl 103: });
1.46 ! raeburn 104: window.onload = function(){ \$(window).trigger('resize') };
1.39 droeschl 105: SCRIPT
1.46 ! raeburn 106: # javascript will position the iframe if window was resized (or zoomed)
! 107: return <<ENDFRAME;
! 108: $startpage
! 109: $script
! 110: <div class="LC_iframecontainer">
! 111: <iframe src="$url">$lt{'noif'} $noiframe</iframe>
! 112: </div>
! 113: $endpage
1.38 droeschl 114: ENDFRAME
1.46 ! raeburn 115: }
1.21 albertel 116: }
117:
118: sub handler {
119: my $r=shift;
120: &Apache::loncommon::content_type($r,'text/html');
121: $r->send_http_header;
122:
123: return OK if $r->header_only;
124:
1.38 droeschl 125: my $url = $r->uri;
1.44 raeburn 126: my ($is_ext,$brcrum,$absolute);
1.38 droeschl 127:
128: for ($url){
129: s|^/adm/wrapper||;
130: $is_ext = $_ =~ s|^/ext/|http://|;
131: s|http://https://|https://|;
132: s|:|:|g;
1.21 albertel 133: }
134:
1.42 raeburn 135: if ($is_ext) {
1.44 raeburn 136: my $hostname = $r->hostname();
137: my $lonhost = &Apache::lonnet::host_from_dns($hostname);
138: if ($lonhost) {
139: my $actual = &Apache::lonnet::absolute_url($hostname);
140: my $expected = $Apache::lonnet::protocol{$lonhost}.'://'.$hostname;
141: unless ($actual eq $expected) {
142: $absolute = $expected;
143: }
144: }
1.42 raeburn 145: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
146: ['forceedit','register','folderpath','symb','idx','title']);
147: if (($env{'form.forceedit'}) &&
148: (&Apache::lonnet::allowed('mdc',$env{'request.course.id'})) &&
149: (($env{'form.folderpath'} =~ /^supplemental/) ||
150: ($env{'form.symb'} =~ /^uploaded/))) {
151: $r->print(
152: &Apache::lonextresedit::display_editor($url,$env{'form.folderpath'},
153: $env{'form.symb'},
154: $env{'form.idx'}));
155: return OK;
156: } elsif ($env{'form.folderpath'} =~ /^supplemental/) {
157: my $crstype = &Apache::loncommon::course_type();
1.43 raeburn 158: my $title = $env{'form.title'};
159: if ($title eq '') {
160: $title = &mt('External Resource');
161: }
1.42 raeburn 162: $brcrum =
1.43 raeburn 163: &Apache::lonhtmlcommon::docs_breadcrumbs(undef,$crstype,undef,$title,1);
1.42 raeburn 164: }
165: }
166:
1.21 albertel 167: #
168: # Actual URL
169: #
1.41 www 170: if ($url=~/$LONCAPA::assess_re/) {
1.21 albertel 171: #
172: # This is uploaded homework
173: #
1.38 droeschl 174: $env{'request.state'}='uploaded';
175: &Apache::lonhomework::renderpage($r,$url);
1.21 albertel 176: } else {
177: #
178: # This is not homework
179: #
1.38 droeschl 180: if ($is_ext) {
181: $ENV{'QUERY_STRING'} =~ s/(^|\&)symb=[^\&]*/$1/;
1.42 raeburn 182: $ENV{'QUERY_STRING'} =~ s/\&$//;
1.38 droeschl 183: }
184:
1.35 raeburn 185: unless ($ENV{'QUERY_STRING'} eq '') {
1.38 droeschl 186: $url.=(($url=~/\?/)?'&':'?').$ENV{'QUERY_STRING'};
1.35 raeburn 187: }
1.38 droeschl 188:
189: # encrypt url if not external
190: &Apache::lonenc::check_encrypt(\$url) if $url !~ /^https?\:/ ;
191:
1.45 raeburn 192: $r->print( wrapper($url,$brcrum,$absolute,$is_ext) );
1.38 droeschl 193:
1.21 albertel 194: } # not just the menu
1.38 droeschl 195:
1.21 albertel 196: return OK;
1.13 www 197: } # handler
1.1 www 198:
199: 1;
200: __END__
201:
1.30 jms 202: =pod
1.1 www 203:
1.30 jms 204: =head1 NAME
205:
206: Apache::lonwrapper - External and binary file management.
207:
208: =head1 SYNOPSIS
209:
210: Wrapper for external and binary files as standalone resources. Edit handler for rat maps; TeX content handler.
211:
212: This is part of the LearningOnline Network with CAPA project
213: described at http://www.lon-capa.org.
214:
215: =head1 Subroutines
216:
217: =over
218:
1.45 raeburn 219: =item wrapper($url,$brcrum,$absolute,$is_ext)
1.30 jms 220:
1.45 raeburn 221: =over
222:
1.46 ! raeburn 223: =item $url
! 224:
1.45 raeburn 225: url to display by including in an iframe within a
226: LON-CAPA page which has a standard LON-CAPA inline menu.
227:
228: =item $brcrum
229:
230: breadcrumbs for unregistered urls
1.42 raeburn 231: (i.e., external resources in Supplemental Content).
1.45 raeburn 232:
1.46 ! raeburn 233: =item $absolute
1.45 raeburn 234:
235: contains protocol (http or https) followed by
236: the hostname, if menu items in the standard LON-CAPA
237: interface created by the call to loncommon::start_page()
238: within &wrapper() need to use absolute URLs rather than
239: relative URLs.
240:
241: That will be the case where an external resource has been
242: served from port 80, when the server customarily serves
243: requests using Apache/SSL (i.e., port 443). mod_rewrite
1.46 ! raeburn 244: is used to switch requests for external resources
1.45 raeburn 245: from https:// to http:// where the the URL of the remote site
246: specified in the resource itself is http://.
247:
248: This is done to avoid default mixed content blocking
249: in Firefox 23 and later, when serving from Apache/SSL.
250:
251: =item $is_ext
252:
253: true if URL is for an external resource.
254:
255: =back
256:
1.38 droeschl 257: Returns markup for the entire page.
1.30 jms 258:
259: =item handler()
260:
261: =back
262:
263: =cut
1.1 www 264:
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