Annotation of rat/lonwrapper.pm, revision 1.80
1.1 www 1: # The LearningOnline Network with CAPA
2: # Wrapper for external and binary files as standalone resources
3: #
1.80 ! raeburn 4: # $Id: lonwrapper.pm,v 1.79 2022/08/30 11:41:27 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();
1.50 raeburn 40: use Apache::lonexttool();
1.68 raeburn 41: use Apache::lonhomework();
1.78 raeburn 42: use Apache::lonnavmaps();
1.64 raeburn 43: use LONCAPA qw(:DEFAULT :match);
44: use HTML::Entities();
1.78 raeburn 45: use Digest::MD5();
1.1 www 46:
47: # ================================================================ Main Handler
1.21 albertel 48: sub wrapper {
1.69 raeburn 49: my ($r,$url,$brcrum,$absolute,$is_ext,$is_pdf,$exttool,$linktext,$explanation,
1.80 ! raeburn 50: $title,$width,$height,$reuse,$is_supp) = @_;
1.23 albertel 51:
1.42 raeburn 52: my $forcereg;
53: unless ($env{'form.folderpath'}) {
54: $forcereg = 1;
55: }
1.46 raeburn 56: my %lt = &Apache::lonlocal::texthash(
57: 'noif' => 'No iframe support.',
58: 'show' => 'Show content in pop-up window',
59: );
60:
1.77 raeburn 61: (undef,undef,undef,undef,undef,undef,my $clientmobile) =
62: &Apache::loncommon::decode_user_agent($r);
63:
1.69 raeburn 64: my ($anchor,$uselink);
1.53 raeburn 65: if ($is_ext) {
66: if ($env{'form.symb'}) {
67: (undef,undef,my $res) = &Apache::lonnet::decode_symb($env{'form.symb'});
68: if ($res =~ /(#[^#]+)$/) {
69: $anchor = $1;
70: }
71: } elsif ($env{'form.anchor'} ne '') {
72: $anchor = '#'.$env{'form.anchor'};
1.51 raeburn 73: }
1.78 raeburn 74: if (($is_ext eq 'tab') || ($is_ext eq 'window')) {
75: $uselink = 1;
76: }
77: unless (($is_pdf && $clientmobile) || $uselink) {
1.69 raeburn 78: my $hostname = $r->hostname();
79: my $lonhost = $r->dir_config('lonHostID');
80: my $ip = &Apache::lonnet::get_host_ip($lonhost);
81: $uselink = &Apache::loncommon::is_nonframeable($url,$absolute,$hostname,$ip);
82: }
1.51 raeburn 83: }
84:
85: my $noiframe = &Apache::loncommon::modal_link($url.$anchor,$lt{'show'},500,400);
1.42 raeburn 86: my $args = {'bgcolor' => '#FFFFFF'};
87: if ($forcereg) {
88: $args->{'force_register'} = $forcereg;
89: }
90: if (ref($brcrum) eq 'ARRAY') {
1.45 raeburn 91: $args->{'bread_crumbs'} = $brcrum;
1.42 raeburn 92: }
1.44 raeburn 93: if ($absolute) {
1.57 raeburn 94: $args->{'use_absolute'} = $absolute;
1.44 raeburn 95: }
1.56 raeburn 96: if ($env{'form.only_body'}) {
97: $args->{'only_body'} = $env{'form.only_body'};
98: }
1.42 raeburn 99:
1.73 raeburn 100: my ($countdown,$donemsg,$headjs);
1.67 raeburn 101: if (($exttool) && (&Apache::lonnet::EXT('resource.0.gradable') =~ /^yes$/i)) {
102: $Apache::lonhomework::browse = &Apache::lonnet::allowed('bre',$url);
103: if ($env{'form.markaccess'}) {
1.68 raeburn 104: my $symb=&Apache::lonnet::symbread($url);
105: my @interval=&Apache::lonnet::EXT('resource.0.interval',$symb);
1.67 raeburn 106: my ($timelimit) = split(/_/,$interval[0]);
1.68 raeburn 107: my $setres = &Apache::lonnet::set_first_access($interval[1],$timelimit);
108: if ($setres eq 'ok') {
109: delete($env{'form.markaccess'});
110: }
111: } elsif ($env{'form.LC_interval_done'} eq 'true') {
112: my $symb=&Apache::lonnet::symbread($url);
113: if ($symb) {
114: (my $donebuttonresult,$donemsg) = &Apache::lonhomework::zero_timer($symb);
115: undef($env{'form.LC_interval_done'});
116: undef($env{'form.LC_interval_done_proctorpass'});
117: }
1.67 raeburn 118: }
119: my ($status,$result,$resource_due) =
120: &Apache::lonexttool::gradabletool_access_check();
121: undef($Apache::lonhomework::browse);
122: if ($status eq 'CAN_ANSWER') {
123: if ($resource_due) {
124: my $time_left = $resource_due - time();
125: if ($resource_due && ($time_left > 0)) {
126: $countdown ='
1.66 raeburn 127: <script type="text/javascript">
128: // <![CDATA['."\n".
129: &Apache::lonhtmlcommon::countdown().'
130: // ]]>
131: </script>'."\n".
1.67 raeburn 132: &Apache::lonhtmlcommon::set_due_date($resource_due);
133: }
1.66 raeburn 134: }
1.67 raeburn 135: } else {
136: if ($status eq 'SHOW_ANSWER') {
137: $result = &Apache::lonexttool::display_score().
138: &Apache::lonfeedback::list_discussion('tool','OPEN');
139: }
140: return &Apache::loncommon::start_page('Menu',undef,$args).
141: $result.
142: &Apache::loncommon::end_page();
1.66 raeburn 143: }
144: }
145:
1.73 raeburn 146: #
147: # Where iframe is in use, if window.onload() executes before the custom resize function
148: # has been defined (jQuery), two global javascript vars (LCnotready and LCresizedef)
149: # are used to ensure document.ready() triggers a call to resize, so the iframe contents
150: # do not obscure the Functions menu.
151: #
152:
1.77 raeburn 153: unless ($clientmobile || ($exttool eq 'window') || ($exttool eq 'tab') || $uselink) {
1.73 raeburn 154: $headjs = '
155: <script type="text/javascript">
156: // <![CDATA[
157: var LCnotready = 0;
158: var LCresizedef = 0;
159: // ]]>
160: </script>'."\n";
1.74 raeburn 161: }
1.73 raeburn 162:
163: my $startpage = &Apache::loncommon::start_page('Menu',$headjs,$args).$countdown.$donemsg;
1.67 raeburn 164: my $endpage = &Apache::loncommon::end_page();
165:
1.69 raeburn 166: if (($uselink) && ($title eq '')) {
167: if ($env{'form.symb'}) {
168: $title=&Apache::lonnet::gettitle($env{'form.symb'});
1.80 ! raeburn 169: } elsif (!$is_supp) {
1.69 raeburn 170: my $symb=&Apache::lonnet::symbread($r->uri);
171: if ($symb) {
172: $title=&Apache::lonnet::gettitle($symb);
173: }
174: }
175: }
1.78 raeburn 176: if ($clientmobile || ($exttool eq 'window') || ($exttool eq 'tab') ||
177: ($is_ext eq 'tab') || ($is_ext eq 'window')) {
1.47 raeburn 178: my $output = $startpage;
179: if ($is_pdf) {
1.69 raeburn 180: $linktext = &mt('Link to PDF (for mobile devices)');
181: $output .= &create_link($url,$anchor,$title,$linktext);
1.78 raeburn 182: } elsif (($exttool eq 'window') || ($exttool eq 'tab') ||
183: ($is_ext eq 'tab') || ($is_ext eq 'window')) {
184: my $preamble;
1.60 raeburn 185: if ($linktext eq '') {
1.78 raeburn 186: if ($exttool) {
187: $linktext = &mt('Launch External Tool');
188: } else {
189: $linktext = &mt('Link to External Resource');
190: }
191: }
192: if ($exttool) {
193: $url = &HTML::Entities::encode($url,'"<>&');
194: } else {
195: $url = &HTML::Entities::encode($url.$anchor,'&<>"');
1.60 raeburn 196: }
1.78 raeburn 197: if (($exttool eq 'tab') || ($is_ext eq 'tab')) {
198: my $target;
199: if ($exttool) {
200: $target = 'LCExternalToolTab';
201: } else {
202: if ($reuse) {
203: $target = 'LCExternalResTab';
204: } else {
205: $target = '_blank';
206: }
207: if ($title ne '') {
208: $preamble = '<span style="font-weight:bold;">'.$title.'</span><br />';
209: }
210: }
211: $output .= '<div>'.$preamble.
212: '<a href="'.$url.'" target="'.$target.'" style="padding:0;clear:both;margin:0;border:0">'.
1.63 raeburn 213: $linktext.'</a>'.
214: '</div>';
215: } else {
1.78 raeburn 216: my ($target,$extlinkimg);
217: if ($exttool) {
218: $target = 'LCExternalToolPopUp';
219: } else {
220: $target = 'LCExternalResPopUp';
221: if ($title ne '') {
222: $preamble = '<span style="font-weight:bold;">'.$title.'</span><br />';
223: }
224: $extlinkimg = '<img src="'.&Apache::loncommon::lonhttpdurl($r->dir_config('lonIconsURL').'/externallink.gif').'" width="19" height="18" border="0" />';
225: unless ($reuse) {
226: my $resid;
227: if ($env{'request.course.id'}) {
1.80 ! raeburn 228: unless (($is_supp) || ($env{'form.folderpath'} =~ /^supplemental/)) {
1.78 raeburn 229: my $symb=&Apache::lonnet::symbread($r->uri);
230: if ($symb) {
231: my $navmap = Apache::lonnavmaps::navmap->new();
232: if (ref($navmap)) {
233: my $res = $navmap->getBySymb($symb);
234: if (ref($res)) {
235: $resid = $res->id;
236: $resid =~ s/\./_/g;
237: }
238: }
239: }
240: }
241: }
242: if ($resid eq '') {
243: $resid = substr(Digest::MD5::md5_hex(Digest::MD5::md5_hex(time(). {}. rand(). $$)), 0, 8);
244: }
245: &js_escape(\$resid);
246: $target .= $resid;
247: }
248: }
1.63 raeburn 249: $output .= <<"ENDLINK";
250: <script type="text/javascript">
1.64 raeburn 251: // <![CDATA[
1.70 raeburn 252: var windowObjectReference = null;
253: var PreviousUrl;
254:
1.63 raeburn 255: function openSinglePopup(strUrl) {
256: if (windowObjectReference == null || windowObjectReference.closed) {
1.78 raeburn 257: windowObjectReference = window.open(strUrl, "$target",
1.63 raeburn 258: "height=$height,width=$width,scrollbars=yes,resizable=yes,status=yes,menubar=no,location=no'");
259: } else if(PreviousUrl != strUrl) {
1.78 raeburn 260: windowObjectReference = window.open(strUrl, "$target",
1.63 raeburn 261: "height=$height,width=$width,scrollbars=yes,resizable=yes,status=yes,menubar=no,location=no'");
262: windowObjectReference.focus();
263: } else {
264: windowObjectReference.focus();
265: };
266: PreviousUrl = strUrl;
267: }
1.64 raeburn 268: // ]]>
1.63 raeburn 269: </script>
1.78 raeburn 270: <div>$preamble
271: <a href="$url" target="$target" onclick="openSinglePopup(this.href); return false;">
272: $linktext$extlinkimg</a>
1.63 raeburn 273: </div>
274: ENDLINK
275: }
1.78 raeburn 276: if ($exttool) {
277: if ($explanation ne '') {
278: $output .= '<div>'.$explanation.'</div>';
279: }
280: if (&Apache::lonnet::EXT('resource.0.gradable')) {
281: $output .= &Apache::lonfeedback::list_discussion('tool','OPEN');
282: }
1.66 raeburn 283: }
1.47 raeburn 284: } else {
1.69 raeburn 285: if ($uselink) {
286: $linktext = &mt('Link to resource');
287: $output .= &create_link($url,$anchor,$title,$linktext);
288: } else {
289: my $dest = &HTML::Entities::encode($url.$anchor,'&<>"');
290: $output .= '<div style="overflow:scroll; -webkit-overflow-scrolling:touch;">'."\n".
291: '<iframe src="'.$dest.'" height="100%" width="100%" frameborder="0">'."\n".
292: "$lt{'noif'} $noiframe\n".
293: "</iframe>\n".
294: "</div>\n";
295: }
1.47 raeburn 296: }
297: $output .= $endpage;
298: return $output;
1.69 raeburn 299: } elsif ($uselink) {
300: $linktext = &mt('Link to resource');
301: return $startpage.&create_link($url,$anchor,$title,$linktext).$endpage;
1.46 raeburn 302: } else {
1.55 raeburn 303: my $offset = 5;
304: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['inhibitmenu']);
305: if ($env{'form.inhibitmenu'} eq 'yes') {
306: $offset = 0;
307: }
1.46 raeburn 308: my $script = &Apache::lonhtmlcommon::scripttag(<<SCRIPT);
309: \$(document).ready( function() {
310: \$(window).unbind('resize').resize(function(){
1.54 damieng 311: var header = null;
1.55 raeburn 312: var offset = $offset;
1.46 raeburn 313: var height = 0;
314: var hdrtop = 0;
315: if (\$('div.LC_head_subbox:first').length) {
316: header = \$('div.LC_head_subbox:first');
317: offset = 9;
318: } else {
319: if (\$('#LC_breadcrumbs').length) {
320: header = \$('#LC_breadcrumbs');
321: }
322: }
1.54 damieng 323: if (header != null && header.length) {
1.46 raeburn 324: height = header.height();
325: hdrtop = header.position().top;
1.42 raeburn 326: }
1.46 raeburn 327: var pos = height + hdrtop + offset;
328: \$('.LC_iframecontainer').css('top', pos);
329: });
1.73 raeburn 330: LCresizedef = 1;
331: if (LCnotready == 1) {
332: LCnotready = 0;
333: \$(window).trigger('resize');
334: }
1.38 droeschl 335: });
1.73 raeburn 336: window.onload = function(){
337: if (LCresizedef) {
338: LCnotready = 0;
1.75 raeburn 339: \$(window).trigger('resize');
1.73 raeburn 340: } else {
341: LCnotready = 1;
342: }
343: };
1.39 droeschl 344: SCRIPT
1.46 raeburn 345: # javascript will position the iframe if window was resized (or zoomed)
1.64 raeburn 346: my $dest = &HTML::Entities::encode($url.$anchor,'&<>"');
1.46 raeburn 347: return <<ENDFRAME;
348: $startpage
349: $script
350: <div class="LC_iframecontainer">
1.64 raeburn 351: <iframe src="$dest">$lt{'noif'} $noiframe</iframe>
1.46 raeburn 352: </div>
353: $endpage
1.38 droeschl 354: ENDFRAME
1.46 raeburn 355: }
1.21 albertel 356: }
357:
1.69 raeburn 358: sub create_link {
359: my ($url,$anchor,$title,$linktext) = @_;
360: my $shownlink;
361: if ($title eq '') {
362: $title = $env{'form.title'};
363: if ($title eq '') {
364: unless ($env{'request.enc'}) {
365: ($title) = ($url =~ m{/([^/]+)$});
366: $title =~ s/(\?[^\?]+)$//;
367: }
368: }
369: }
370: unless ($title eq '') {
371: $shownlink = '<span style="font-weight:bold;">'.$title.'</span><br />';
372: }
373: my $dest = &HTML::Entities::encode($url.$anchor,'&<>"');
374: $shownlink .= '<a href="'.$dest.'">'.$linktext.'</a>';
375: return $shownlink;
376: }
377:
1.21 albertel 378: sub handler {
379: my $r=shift;
380: &Apache::loncommon::content_type($r,'text/html');
381: $r->send_http_header;
382:
383: return OK if $r->header_only;
384:
1.38 droeschl 385: my $url = $r->uri;
1.60 raeburn 386: my ($is_ext,$brcrum,$absolute,$is_pdf,$exttool,$cdom,$cnum,$hostname,
1.80 ! raeburn 387: $linktext,$explanation,$width,$height,$reuse,$is_supp);
1.38 droeschl 388:
389: for ($url){
390: s|^/adm/wrapper||;
1.73 raeburn 391: $is_ext = $_ =~ s|^/ext/|http://|;
1.76 raeburn 392: s|http://https://|https://| if ($is_ext);
1.70 raeburn 393: s|:|:|g;
1.21 albertel 394: }
395:
1.47 raeburn 396: if ($url =~ /\.pdf$/i) {
397: $is_pdf = 1;
1.78 raeburn 398: } elsif (($is_ext) && ($env{'request.course.id'})) {
399: if ($env{'course.'.$env{'request.course.id'}.'.extresource'}) {
400: (my $selected,$reuse,$width,$height) = split(/:/,$env{'course.'.$env{'request.course.id'}.'.extresource'});
401: if ($selected eq 'tab') {
402: $is_ext = 'tab';
403: $width = '';
404: $height = '';
405: } elsif ($selected eq 'window') {
406: $is_ext = 'window';
407: unless ($width =~ /^\d+$/) {
408: $width = '';
409: }
410: unless ($height =~ /^\d+$/) {
411: $height = '';
1.79 raeburn 412: }
1.78 raeburn 413: } else {
414: $width = '';
415: $height = '';
416: $reuse = '';
417: }
418: }
1.62 raeburn 419: } elsif ($url =~ m{^/adm/($match_domain)/($match_courseid)/(\d+)/ext\.tool$}) {
1.50 raeburn 420: $cdom = $1;
421: $cnum = $2;
422: my $marker = $3;
423: $exttool = 'iframe';
1.61 raeburn 424: my $exttoolremote;
1.63 raeburn 425: my %toolhash = &Apache::lonnet::get('exttool_'.$marker,['target','linktext','explanation','id','width','height'],
1.60 raeburn 426: $cdom,$cnum);
1.61 raeburn 427: if ($toolhash{'id'}) {
1.65 raeburn 428: my %ltitools = &Apache::lonnet::get_domain_lti($cdom,'consumer');
1.61 raeburn 429: if (ref($ltitools{$toolhash{'id'}}) eq 'HASH') {
430: $exttoolremote = $ltitools{$toolhash{'id'}}{'url'};
431: }
432: }
1.50 raeburn 433: if ($toolhash{'target'} eq 'window') {
1.63 raeburn 434: $exttool = 'window';
435: $width = $toolhash{'width'};
436: $height = $toolhash{'height'};
437: } elsif ($toolhash{'target'} eq 'tab') {
1.70 raeburn 438: $exttool = 'tab';
1.63 raeburn 439: }
440: if (($exttool eq 'window') || ($exttool eq 'tab')) {
1.70 raeburn 441: $linktext = $toolhash{'linktext'};
1.60 raeburn 442: $explanation = $toolhash{'explanation'};
1.61 raeburn 443: } elsif (($exttoolremote =~ /^http:/) && ($ENV{'SERVER_PORT'} == 443)) {
1.63 raeburn 444: $exttool = 'tab';
1.50 raeburn 445: }
1.47 raeburn 446: }
1.50 raeburn 447: if (($is_ext) || ($exttool)) {
1.42 raeburn 448: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1.53 raeburn 449: ['forceedit','register','folderpath','symb','idx','title','anchor']);
1.42 raeburn 450: if (($env{'form.forceedit'}) &&
451: (&Apache::lonnet::allowed('mdc',$env{'request.course.id'})) &&
452: (($env{'form.folderpath'} =~ /^supplemental/) ||
453: ($env{'form.symb'} =~ /^uploaded/))) {
1.53 raeburn 454: if ($env{'form.symb'}) {
455: (undef,undef,my $res) = &Apache::lonnet::decode_symb($env{'form.symb'});
456: if ($res =~ /(#[^#]+)$/) {
457: $url .= $1;
458: }
459: } elsif ($env{'form.folderpath'} =~ /^supplemental/) {
460: if ($env{'form.anchor'} ne '') {
461: $url .= '#'.$env{'form.anchor'};
462: }
1.80 ! raeburn 463: $is_supp = 1;
1.52 raeburn 464: }
1.50 raeburn 465: my $type = 'ext';
466: if ($exttool) {
467: $type = 'tool';
1.58 raeburn 468: } elsif (($url =~ /^http:/) && ($ENV{'SERVER_PORT'} == 443)) {
469: $hostname = $r->hostname();
1.50 raeburn 470: }
1.42 raeburn 471: $r->print(
472: &Apache::lonextresedit::display_editor($url,$env{'form.folderpath'},
473: $env{'form.symb'},
1.50 raeburn 474: $env{'form.idx'},$type,$cdom,
1.58 raeburn 475: $cnum,$hostname));
1.42 raeburn 476: return OK;
477: } elsif ($env{'form.folderpath'} =~ /^supplemental/) {
478: my $crstype = &Apache::loncommon::course_type();
1.43 raeburn 479: my $title = $env{'form.title'};
480: if ($title eq '') {
1.50 raeburn 481: if ($is_ext) {
482: $title = &mt('External Resource');
483: } else {
484: $title = &mt('External Tool');
485: }
1.43 raeburn 486: }
1.80 ! raeburn 487: $is_supp = 1;
! 488: if ($env{'request.course.id'}) {
! 489: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
! 490: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
! 491: &Apache::loncommon::validate_folderpath(1,'',$cnum,$cdom);
! 492: }
1.42 raeburn 493: $brcrum =
1.43 raeburn 494: &Apache::lonhtmlcommon::docs_breadcrumbs(undef,$crstype,undef,$title,1);
1.42 raeburn 495: }
1.80 ! raeburn 496: } elsif ($env{'request.course.id'}) {
! 497: my $courseurl = &Apache::lonnet::courseid_to_courseurl($env{'request.course.id'});
! 498: $courseurl =~ s{^/}{};
! 499: if ($url =~ m{^\Q/uploaded/$courseurl/supplemental/\E}) {
! 500: $is_supp = 1;
! 501: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
! 502: ['folderpath','title']);
! 503: if ($env{'form.folderpath'}) {
! 504: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
! 505: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
! 506: &Apache::loncommon::validate_folderpath(1,'',$cnum,$cdom);
! 507: }
! 508: my $title = $env{'form.title'};
! 509: my $crstype = &Apache::loncommon::course_type();
! 510: $brcrum =
! 511: &Apache::lonhtmlcommon::docs_breadcrumbs(undef,$crstype,undef,$title,1);
! 512:
! 513: }
1.42 raeburn 514: }
515:
1.21 albertel 516: #
517: # Actual URL
518: #
1.62 raeburn 519: if (($url=~/$LONCAPA::assess_re/) && (!$exttool)) {
1.21 albertel 520: #
521: # This is uploaded homework
522: #
1.38 droeschl 523: $env{'request.state'}='uploaded';
524: &Apache::lonhomework::renderpage($r,$url);
1.21 albertel 525: } else {
526: #
527: # This is not homework
528: #
1.50 raeburn 529: if (($is_ext) || ($exttool)) {
1.49 raeburn 530: $absolute = $env{'request.use_absolute'};
1.38 droeschl 531: $ENV{'QUERY_STRING'} =~ s/(^|\&)symb=[^\&]*/$1/;
1.42 raeburn 532: $ENV{'QUERY_STRING'} =~ s/\&$//;
1.38 droeschl 533: }
534:
1.35 raeburn 535: unless ($ENV{'QUERY_STRING'} eq '') {
1.38 droeschl 536: $url.=(($url=~/\?/)?'&':'?').$ENV{'QUERY_STRING'};
1.35 raeburn 537: }
1.38 droeschl 538:
539: # encrypt url if not external
1.59 raeburn 540: unless ($is_ext) {
1.50 raeburn 541: &Apache::lonenc::check_encrypt(\$url);
542: }
1.38 droeschl 543:
1.69 raeburn 544: $r->print( wrapper($r,$url,$brcrum,$absolute,$is_ext,$is_pdf,$exttool,
1.80 ! raeburn 545: $linktext,$explanation,undef,$width,$height,$reuse,
! 546: $is_supp) );
1.38 droeschl 547:
1.21 albertel 548: } # not just the menu
1.38 droeschl 549:
1.21 albertel 550: return OK;
1.13 www 551: } # handler
1.1 www 552:
553: 1;
554: __END__
555:
1.30 jms 556: =pod
1.1 www 557:
1.30 jms 558: =head1 NAME
559:
560: Apache::lonwrapper - External and binary file management.
561:
562: =head1 SYNOPSIS
563:
564: Wrapper for external and binary files as standalone resources. Edit handler for rat maps; TeX content handler.
565:
566: This is part of the LearningOnline Network with CAPA project
567: described at http://www.lon-capa.org.
568:
569: =head1 Subroutines
570:
571: =over
572:
1.80 ! raeburn 573: =item wrapper($r,$url,$brcrum,$absolute,$is_ext,$is_pdf,$exttool,$linktext,$explanation,$title,$width,$height,$reuse,$is_supp)
1.30 jms 574:
1.45 raeburn 575: =over
576:
1.69 raeburn 577: =item $r
578:
579: request object
580:
1.46 raeburn 581: =item $url
582:
1.71 raeburn 583: url to display either by including in an iframe within a
584: LON-CAPA page which has a standard LON-CAPA inline menu,
585: or in some cases launched in a separate tab or window,
586: launched via a link in a LON-CAPA page with standard inline
587: menu.
1.45 raeburn 588:
589: =item $brcrum
590:
591: breadcrumbs for unregistered urls
1.42 raeburn 592: (i.e., external resources in Supplemental Content).
1.45 raeburn 593:
1.46 raeburn 594: =item $absolute
1.45 raeburn 595:
596: contains protocol (http or https) followed by
597: the hostname, if menu items in the standard LON-CAPA
598: interface created by the call to loncommon::start_page()
599: within &wrapper() need to use absolute URLs rather than
600: relative URLs.
601:
602: That will be the case where an external resource has been
603: served from port 80, when the server customarily serves
604: requests using Apache/SSL (i.e., port 443). mod_rewrite
1.49 raeburn 605: is used to switch requests for external resources and
606: the syllabus: /public/<domain>/<courseid>/syllabus
607: (which might also point at an external resource)
1.45 raeburn 608: from https:// to http:// where the the URL of the remote site
609: specified in the resource itself is http://.
610:
611: This is done to avoid default mixed content blocking
612: in Firefox 23 and later, when serving from Apache/SSL.
613:
614: =item $is_ext
615:
1.78 raeburn 616: true if URL is for an external resource. Default true value
1.79 raeburn 617: is 1 (display in iframe, unless $uselink is true).
1.78 raeburn 618: If external resource is to be displayed in a tab,
619: value of $is_ext will be tab, if to be displayed in a pop-up window,
1.79 raeburn 620: value of $is_ext will be window.
1.45 raeburn 621:
1.47 raeburn 622: =item $is_pdf
623:
624: true if URL is for a PDF (based on file extension).
625:
1.71 raeburn 626: =item $exttool
627:
628: If URL is for an External Tool, will contain the target type: iframe, window or tab.
629:
630: =item $linktext
631:
1.79 raeburn 632: optional. If URL is for an External Tool, and target type is window or tab,
1.71 raeburn 633: then the link text may be an option set in the course for each tool instance,
634: or may be a default defined in the domain for all instances of the tool.
635:
636: =item $explanation
637:
1.79 raeburn 638: optional. If URL is for an External Tool, and target type is window or tab,
1.71 raeburn 639: then the explanation is an option set in the course for each tool instance,
640: or may be a default defined in the domain for all instances of the tool.
641:
1.49 raeburn 642: =item $title
643:
1.77 raeburn 644: optional. If wrapped item is a PDF, and $clientmobile is true,
645: a link to a PDF is shown. The "title" will be displayed
1.49 raeburn 646: above the link, but if not provided as an arg, $env{'form.title'}
647: will be used, otherwise, the filename will be displayed (unless
648: hidden URL set for the resource).
649:
1.71 raeburn 650: =item $width
651:
652: optional. If URL is for an External Tool, and target type is window,
1.79 raeburn 653: then a default width may have been defined in the domain for all instances of
1.71 raeburn 654: the tool. If so, that width will be used for the window opened (via a link)
1.79 raeburn 655: to launch the external tool. If the URL is for an External Resource, and
1.78 raeburn 656: $is_ext is window, then a default width (px) may have been defined in the current
657: course for all external resource instances.
1.71 raeburn 658:
659: =item $height
660:
661: optional. If URL is for an External Tool, and target type is window,
1.79 raeburn 662: then a default height may have been defined in the domain for all instances of
1.71 raeburn 663: the tool. If so, that height will be used for the window opened (via a link)
1.79 raeburn 664: to launch the external tool. If the URL is for an External Resource, and
1.78 raeburn 665: $is_ext is window, then a default height (px) may have been defined in the current
666: course for all external resource instances.
667:
668: =item $reuse
669:
670: optional. If the URL is for an External Resource, and $is_ext is tab or window,
671: then $reuse will be true if the same tab or window is to be reused for display
672: of all external resource instances in a a course.
1.71 raeburn 673:
1.45 raeburn 674: =back
675:
1.38 droeschl 676: Returns markup for the entire page.
1.30 jms 677:
678: =item handler()
679:
1.71 raeburn 680: Content handler for requests for: /adm/wrapper/...
681: used for content to be displayed in an iframe, or launched in a separate tab
682: or window via a link. The target URL is extracted from the requested URL, by
1.79 raeburn 683: removing the /adm/wrapper prefix.
1.71 raeburn 684:
1.79 raeburn 685: The target URL will typically be a PDF served from the current server, an
1.71 raeburn 686: external resource URL served from a different server, or an external tool
687: (from an LTI Provider) launched from LON-CAPA (as LTI Consumer) and launched
688: via a link.
689:
690: If the request included forceedit in the query string, and the requester has
1.79 raeburn 691: rights to modify course content, then the editor will be displayed to allow
1.71 raeburn 692: changes to be made to the resource (e.g., change the URL of the external resource,
1.79 raeburn 693: or change the setting for the external tool instance).
1.71 raeburn 694:
695: If not in edit mode, then the wrapper() subroutine will be called to generate the
696: standard LON-CAPA inline menu, and then either a link to launch a separate tab or
1.79 raeburn 697: window, or an iframe to display the content inline.
1.71 raeburn 698:
1.30 jms 699: =back
700:
701: =cut
1.1 www 702:
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