1: # The LearningOnline Network with CAPA
2: # Extract domain, courseID, and symb from a shortened URL,
3: # and switch role to a role in designated course.
4: #
5: # $Id: lontiny.pm,v 1.14 2022/07/02 17:23:02 raeburn Exp $
6: #
7: # Copyright Michigan State University Board of Trustees
8: #
9: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
10: #
11: # LON-CAPA is free software; you can redistribute it and/or modify
12: # it under the terms of the GNU General Public License as published by
13: # the Free Software Foundation; either version 2 of the License, or
14: # (at your option) any later version.
15: #
16: # LON-CAPA is distributed in the hope that it will be useful,
17: # but WITHOUT ANY WARRANTY; without even the implied warranty of
18: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19: # GNU General Public License for more details.
20: #
21: # You should have received a copy of the GNU General Public License
22: # along with LON-CAPA; if not, write to the Free Software
23: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24: #
25: # /home/httpd/html/adm/gpl.txt
26: #
27: # http://www.lon-capa.org/
28: #
29:
30: package Apache::lontiny;
31:
32: use strict;
33: use Apache::Constants qw(:common :http);
34: use Apache::lonnet;
35: use Apache::loncommon;
36: use Apache::lonhtmlcommon;
37: use Apache::lonroles;
38: use Apache::lonuserstate;
39: use Apache::lonnavmaps;
40: use Apache::lonlocal;
41: use LONCAPA qw(:DEFAULT :match);
42:
43: sub handler {
44: my $r = shift;
45: my %user;
46: my $handle = &Apache::lonnet::check_for_valid_session($r,undef,\%user);
47: if ($handle ne '') {
48: my $lonidsdir=$r->dir_config('lonIDsDir');
49: &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
50: if ($r->uri =~ m{^/tiny/($match_domain)/(\w+)$}) {
51: my ($cdom,$key) = ($1,$2);
52: if (&Apache::lonnet::domain($cdom) ne '') {
53: my $configuname = &Apache::lonnet::get_domainconfiguser($cdom);
54: my $tinyurl;
55: my ($result,$cached)=&Apache::lonnet::is_cached_new('tiny',$cdom."\0".$key);
56: if (defined($cached)) {
57: $tinyurl = $result;
58: } else {
59: my %currtiny = &Apache::lonnet::get('tiny',[$key],$cdom,$configuname);
60: if ($currtiny{$key} ne '') {
61: $tinyurl = $currtiny{$key};
62: &Apache::lonnet::do_cache_new('tiny',$cdom."\0".$key,$currtiny{$key},600);
63: }
64: }
65: if ($tinyurl) {
66: my ($cnum,$symb) = split(/\&/,$tinyurl);
67: if ($cnum =~ /^$match_courseid$/) {
68: my $chome = &Apache::lonnet::homeserver($cnum,$cdom);
69: if ($chome ne 'no_host') {
70: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['ttoken']);
71: my ($linkprot,$linkprotuser,$linkprotexit,$ltoken);
72: if ($env{'form.ttoken'}) {
73: my %link_info = &Apache::lonnet::tmpget($env{'form.ttoken'});
74: if ($link_info{'origurl'} eq $r->uri) {
75: if ($link_info{'ltoken'}) {
76: $ltoken = $link_info{'ltoken'};
77: my %ltoken_info = &Apache::lonnet::tmpget($link_info{'ltoken'});
78: $linkprot = $ltoken_info{'linkprot'};
79: $linkprotuser = $ltoken_info{'linkprotuser'};
80: $linkprotexit = $ltoken_info{'linkprotexit'};
81: } elsif ($link_info{'linkprot'}) {
82: $linkprot = $link_info{'linkprot'};
83: if ($link_info{'linkprotuser'}) {
84: $linkprotuser = $link_info{'linkprotuser'};
85: }
86: if ($link_info{'linkprotexit'}) {
87: $linkprotexit = $link_info{'linkprotexit'};
88: }
89: }
90: }
91: }
92: if ($env{'request.course.id'} eq $cdom.'_'.$cnum) {
93: # Check for ttoken
94: my $newlauncher = &launch_check($r->uri,$symb);
95: my ($map,$resid,$url) = &Apache::lonnet::decode_symb($symb);
96: if (&Apache::lonnet::is_on_map($url)) {
97: my $realuri;
98: if ((&Apache::lonnet::EXT('resource.0.hiddenresource',$symb) =~ /^yes$/i) &&
99: (!$env{'request.role.adv'})) {
100: $env{'user.error.msg'}=$r->uri.':bre:1:1:Access to resource denied';
101: return HTTP_NOT_ACCEPTABLE;
102: }
103: if ((&Apache::lonnet::EXT('resource.0.encrypturl',$symb) =~ /^yes$/i) &&
104: (!$env{'request.role.adv'})) {
105: $realuri = &Apache::lonenc::encrypted(&Apache::lonnet::clutter($url));
106: if (($url =~ /\.sequence$/) &&
107: ($env{'course.'.$env{'request.course.id'}.'.type'} ne 'Placement')) {
108: $realuri .= '?navmap=1';
109: } else {
110: $realuri .= '?symb='.&Apache::lonenc::encrypted($symb);
111: }
112: } else {
113: $realuri = &Apache::lonnet::clutter($url);
114: if (($url =~ /\.sequence$/) &&
115: ($env{'course.'.$env{'request.course.id'}.'.type'} ne 'Placement')) {
116: $realuri .= '?navmap=1';
117: } else {
118: $realuri .= '?symb='.$symb;
119: }
120: }
121: my $update;
122: # Check if course needs to be re-initialized
123: if ($newlauncher) {
124: $update = 1;
125: } else {
126: my $loncaparev = $r->dir_config('lonVersion');
127: my ($result,@reinit) = &Apache::loncommon::needs_coursereinit($loncaparev);
128: if ($result eq 'update') {
129: $update = 1;
130: } elsif (!-e $env{'request.course.fn'}.'.db') {
131: $update = 1;
132: } elsif (!$env{'request.role.adv'}) {
133: my $navmap = Apache::lonnavmaps::navmap->new();
134: if (ref($navmap)) {
135: my $res = $navmap->getBySymb($symb);
136: if (ref($res)) {
137: my ($enc_in_bighash,$enc_in_parm);
138: $enc_in_bighash = $res->encrypted();
139: if (&Apache::lonnet::EXT('resource.0.encrypturl',$symb) =~ /^yes$/i) {
140: $enc_in_parm = 1;
141: }
142: if ($enc_in_bighash ne $enc_in_parm) {
143: $update = 1;
144: }
145: }
146: }
147: }
148: }
149: if ($update) {
150: my ($furl,$ferr)=
151: &Apache::lonuserstate::readmap($cdom.'/'.$cnum);
152: if ($ferr) {
153: $env{'user.error.msg'}=$r->uri.':bre:0:0:Course not initialized';
154: $env{'user.reinit'} = 1;
155: return HTTP_NOT_ACCEPTABLE;
156: }
157: }
158: my $host = $r->headers_in->get('Host');
159: if (!$host) {
160: $r->internal_redirect($realuri);
161: return OK;
162: } else {
163: my $protocol = 'http';
164: if ($r->get_server_port == 443) {
165: $protocol = 'https';
166: }
167: my $location = $protocol.'://'.$host.$realuri;
168: $r->headers_out->set(Location => $location);
169: return REDIRECT;
170: }
171: }
172: } else {
173: my %crsenv = &Apache::lonnet::coursedescription("$cdom/$cnum");
174: my @possroles = ('in','ta','ep','st','cr','ad');
175: if ($crsenv{'type'} eq 'Community') {
176: unshift(@possroles,'co');
177: } else {
178: unshift(@possroles,'cc');
179: }
180: my %roleshash =
181: &Apache::lonnet::get_my_roles($env{'user.uname'},$env{'user.domain'},
182: 'userroles',['previous','active','future'],
183: \@possroles,[$cdom],1);
184: my (%possroles,$hassection,%active,%expired,%future);
185: if (keys(%roleshash)) {
186: my $now = time;
187: foreach my $entry (keys(%roleshash)) {
188: if ($entry =~ /^\Q$cnum:$cdom:\E([^:]+):([^:]*)$/) {
189: my ($role,$sec) = ($1,$2);
190: $possroles{$role} = $sec;
191: if ($sec ne '') {
192: $hassection = 1;
193: }
194: my ($tstart,$tend)=split(/\:/,$roleshash{$entry});
195: my $status = 'active';
196: if (($tend) && ($tend<=$now)) {
197: $status = 'previous';
198: }
199: if (($tstart) && ($now<$tstart)) {
200: $status = 'future';
201: }
202: if ($status eq 'active') {
203: $active{$role} = $sec;
204: } elsif ($status eq 'previous') {
205: $expired{$tend} = $role.':'.$sec;
206: } elsif ($status eq 'future') {
207: $future{$tstart} = $role.':'.$sec;
208: }
209: }
210: }
211: }
212: my @allposs = keys(%active);
213: if ($env{'request.lti.login'}) {
214: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'});
215: if ($env{'request.lti.target'} eq '') {
216: if ($env{'form.ltitarget'} eq 'iframe') {
217: &Apache::lonnet::appenv({'request.lti.target' => 'iframe'});
218: delete($env{'form.ltitarget'});
219: }
220: }
221: if ($env{'form.selectrole'}) {
222: foreach my $role (@allposs) {
223: my $newrole = "$role./$cdom/$cnum";
224: if ($possroles{$allposs[0]} ne '') {
225: $newrole .= "/$possroles{$role}";
226: }
227: if ($env{"form.$newrole"}) {
228: my $destination .= '/adm/roles?selectrole=1&'.$newrole.'=1'.
229: '&destinationurl='.&HTML::Entities::encode($r->uri,'&<>"');
230: if ($env{'form.ltitarget'} eq 'iframe') {
231: $destination .= '<itarget=iframe';
232: }
233: &do_redirect($r,$destination);
234: return OK;
235: }
236: }
237: }
238: }
239: if (@allposs == 0) {
240: &show_roles($r,\%crsenv,\%active,'','',\%future,\%expired,$linkprot,$linkprotuser,$linkprotexit,$ltoken);
241: } elsif (@allposs == 1) {
242: my $newrole = "$allposs[0]./$cdom/$cnum";
243: $newrole = "$allposs[0]./$cdom/$cnum";
244: if ($possroles{$allposs[0]} ne '') {
245: $newrole .= "/$possroles{$allposs[0]}";
246: }
247: my $destination .= '/adm/roles?selectrole=1&'.$newrole.'=1'.
248: '&destinationurl='.&HTML::Entities::encode($r->uri,'&<>"');
249: if ($env{'form.ttoken'}) {
250: $destination .= '&ttoken='.$env{'form.ttoken'};
251: }
252: &do_redirect($r,$destination,$linkprot);
253: } elsif (keys(%possroles) > 1) {
254: if (grep(/^(cc|co)$/,@allposs)) {
255: my $newrole;
256: if (exists($possroles{'cc'})) {
257: $newrole = 'cc';
258: } else {
259: $newrole = 'co';
260: }
261: $newrole .= "./$cdom/$cnum";
262: my $destination .= '/adm/roles?selectrole=1&'.$newrole.'=1'.
263: '&destinationurl='.&HTML::Entities::encode($r->uri,'&<>"');
264: if ($env{'form.ttoken'}) {
265: $destination .= '&ttoken='.$env{'form.ttoken'};
266: }
267: &do_redirect($r,$destination,$linkprot);
268: } else {
269: my $hascustom;
270: if (grep(/^cr\//,@allposs)) {
271: $hascustom = 1;
272: }
273: &show_roles($r,\%crsenv,\%possroles,$hassection,$hascustom);
274: }
275: }
276: return OK;
277: }
278: }
279: }
280: }
281: }
282: }
283: &generic_error($r);
284: return OK;
285: } else {
286: return FORBIDDEN;
287: }
288: }
289:
290: sub launch_check {
291: my ($linkuri,$symb) = @_;
292: my ($linkprotector,$linkproturi,$linkkey,$newlauncher);
293: if ($env{'form.ttoken'}) {
294: my %link_info = &Apache::lonnet::tmpget($env{'form.ttoken'});
295: &Apache::lonnet::tmpdel($env{'form.ttoken'});
296: delete($env{'form.ttoken'});
297: if ($link_info{'ltoken'}) {
298: unless (($link_info{'linkprot'}) || ($link_info{'linkkey'} ne '')) {
299: my %ltoken_info = &Apache::lonnet::tmpget($link_info{'ltoken'});
300: if ($ltoken_info{'linkprot'}) {
301: $link_info{'linkprot'} = $ltoken_info{'linkprot'};
302: } elsif ($ltoken_info{'linkkey'} ne '') {
303: $link_info{'linkkey'} = $ltoken_info{'linkkey'};
304: }
305: }
306: &Apache::lonnet::tmpdel($link_info{'ltoken'});
307: }
308: if ($link_info{'linkprot'}) {
309: ($linkprotector,$linkproturi) = split(/:/,$link_info{'linkprot'},2);
310: if ($env{'user.linkprotector'}) {
311: my @protectors = split(/,/,$env{'user.linkprotector'});
312: unless (grep(/^\Q$linkprotector\E$/,@protectors)) {
313: push(@protectors,$linkprotector);
314: @protectors = sort { $a <=> $b } @protectors;
315: &Apache::lonnet::appenv({'user.linkprotector' => join(',',@protectors)});
316: }
317: } else {
318: &Apache::lonnet::appenv({'user.linkprotector' => $linkprotector });
319: }
320: if ($env{'user.linkproturi'}) {
321: my @proturis = split(/,/,$env{'user.linkproturi'});
322: unless(grep(/^\Q$linkproturi\E$/,@proturis)) {
323: push(@proturis,$linkproturi);
324: @proturis = sort(@proturis);
325: &Apache::lonnet::appenv({'user.linkproturi' => join(',',@proturis)});
326: }
327: } else {
328: &Apache::lonnet::appenv({'user.linkproturi' => $linkproturi});
329: }
330: } elsif ($link_info{'linkkey'} ne '') {
331: $linkkey = $link_info{'linkkey'};
332: my $keyedlinkuri = $linkuri;
333: if ($env{'user.deeplinkkey'} ne '') {
334: my @linkkeys = split(/,/,$env{'user.deeplinkkey'});
335: unless (grep(/^\Q$linkkey\E$/,@linkkeys)) {
336: push(@linkkeys,$linkkey);
337: &Apache::lonnet::appenv({'user.deeplinkkey' => join(',',sort(@linkkeys))});
338: }
339: } else {
340: &Apache::lonnet::appenv({'user.deeplinkkey' => $linkkey});
341: }
342: if ($env{'user.keyedlinkuri'}) {
343: my @keyeduris = split(/,/,$env{'user.keyedlinkuri'});
344: unless (grep(/^\Q$keyedlinkuri\E$/,@keyeduris)) {
345: push(@keyeduris,$keyedlinkuri);
346: &Apache::lonnet::appenv({'user.keyedlinkuri' => join(',',sort(@keyeduris))});
347: }
348: } else {
349: &Apache::lonnet::appenv({'user.keyedlinkuri' => $keyedlinkuri});
350: }
351: }
352: if ($link_info{'checklaunch'}) {
353: $newlauncher = 1;
354: }
355: }
356: my $currdeeplinklogin = $env{'request.deeplink.login'};
357: my $deeplink;
358: if ($symb =~ /\.(page|sequence)$/) {
359: my $mapname = &Apache::lonnet::deversion((&Apache::lonnet::decode_symb($symb))[2]);
360: my $navmap = Apache::lonnavmaps::navmap->new();
361: if (ref($navmap)) {
362: $deeplink = $navmap->get_mapparam(undef,$mapname,'0.deeplink');
363: }
364: } else {
365: $deeplink = &Apache::lonnet::EXT('resource.0.deeplink',$symb);
366: }
367: if ($deeplink ne '') {
368: my $disallow;
369: my ($state,$others,$listed,$scope,$protect,$display,$target) = split(/,/,$deeplink);
370: if (($protect ne 'none') && ($protect ne '')) {
371: my ($acctype,$item) = split(/:/,$protect);
372: if ($acctype =~ /lti(c|d)$/) {
373: my $ltitype = $1;
374: if ($linkprotector) {
375: unless ($linkprotector.':'.$linkproturi eq $item.$ltitype.':'.$linkuri) {
376: $disallow = 1;
377: }
378: } else {
379: $disallow = 1;
380: }
381: } elsif ($acctype eq 'key') {
382: if ($linkkey ne '') {
383: unless ($linkkey eq $item) {
384: $disallow = 1;
385: }
386: } else {
387: $disallow = 1;
388: }
389: }
390: }
391: if ($disallow) {
392: if ($currdeeplinklogin eq $linkuri) {
393: &Apache::lonnet::delenv('request.deeplink.login');
394: if ($env{'request.deeplink.target'} ne '') {
395: &Apache::lonnet::delenv('request.deeplink.target');
396: }
397: }
398: } else {
399: unless ($currdeeplinklogin eq $linkuri) {
400: if (($linkprotector) || ($linkkey ne '')) {
401: if ($linkprotector) {
402: &Apache::lonnet::appenv({'request.linkprot' => $linkprotector.':'.$linkproturi});
403: } elsif ($env{'request.linkprot'}) {
404: &Apache::lonnet::delenv('request.linkprot');
405: }
406: if ($linkkey ne '') {
407: &Apache::lonnet::appenv({'request.linkkey' => $linkkey});
408: } elsif ($env{'request.linkkey'} ne '') {
409: &Apache::lonnet::delenv('request.linkkey');
410: }
411: $newlauncher = 1;
412: }
413: }
414: &Apache::lonnet::appenv({'request.deeplink.login' => $linkuri});
415: if ($target ne '') {
416: &Apache::lonnet::appenv({'request.deeplink.target' => $target});
417: } elsif ($env{'request.deeplink.target'} ne '') {
418: &Apache::lonnet::delenv('request.deeplink.target');
419: }
420: }
421: } else {
422: if ($linkprotector) {
423: &Apache::lonnet::appenv({'request.linkprot' => $linkprotector.':'.$linkproturi});
424: } elsif ($env{'request.linkprot'}) {
425: &Apache::lonnet::delenv('request.linkprot');
426: }
427: if ($linkkey ne '') {
428: &Apache::lonnet::appenv({'request.linkkey' => $linkkey});
429: } else {
430: &Apache::lonnet::delenv('request.linkkey');
431: }
432: &Apache::lonnet::appenv({'request.deeplink.login' => $linkuri});
433: if ($env{'request.deeplink.target'} ne '') {
434: &Apache::lonnet::delenv('request.deeplink.target');
435: }
436: }
437: return $newlauncher;
438: }
439:
440: sub do_redirect {
441: my ($r,$destination,$linkprot) = @_;
442: my $windowname = 'loncapaclient';
443: if ($env{'request.lti.login'}) {
444: $windowname .= 'lti';
445: }
446: my $header = '<meta HTTP-EQUIV="Refresh" CONTENT="0; url='.$destination.'" />';
447: my $args = {'bread_crumbs' => [{'href' => '','text' => 'Role initialization'},],};
448: if ($linkprot) {
449: $args = {'only_body' => 1,
450: 'redirect' => [0,$destination],};
451: }
452: &Apache::loncommon::content_type($r,'text/html');
453: $r->send_http_header;
454: if ($linkprot) {
455: $r->print(&Apache::loncommon::start_page('Valid link','',$args).
456: &Apache::loncommon::end_page());
457: } else {
458: $r->print(&Apache::loncommon::start_page('Valid link',$header,$args).
459: &Apache::lonhtmlcommon::scripttag('self.name="'.$windowname.'";').
460: '<h1>'.&mt('Welcome').'</h1>'.
461: '<p>'.&mt('Welcome to the Learning[_1]Online[_2] Network with CAPA. Please wait while your session is being set up.','<i>','</i>').'</p><p>'.
462: '<a href="'.$destination.'">'.&mt('Continue').'</a></p>'.
463: &Apache::loncommon::end_page());
464: }
465: return;
466: }
467:
468: sub show_roles {
469: my ($r,$crsenv,$possroles,$hassection,$hascustom,$futureroles,$expiredroles,$linkprot,$linkprotuser,$linkprotexit,$ltoken) = @_;
470: my ($crsdesc,$crstype,$cdom,$cnum,$header,$title,$preamble,$datatable,$js,$args);
471: if (ref($crsenv) eq 'HASH') {
472: $crsdesc = $crsenv->{'description'};
473: $crstype = $crsenv->{'type'};
474: $cdom = $crsenv->{'domain'};
475: $cnum = $crsenv->{'num'};
476: }
477: if ($crstype eq '') {
478: $crstype = 'Course';
479: }
480: my $lc_crstype = lc($crstype);
481: if ($crsdesc ne '') {
482: $header = &mt("The page you requested belongs to the following $lc_crstype: [_1]",
483: '<i>'.$crsdesc.'</i>');
484: }
485: if (ref($possroles) eq 'HASH') {
486: if (keys(%{$possroles}) > 0) {
487: $args = {'bread_crumbs' => [{'href' => '','text' => "Choose role in $lc_crstype"},],};
488: if ($linkprot) {
489: $args = {'only_body' => 1};
490: }
491: $title = 'Choose a role'; #Do not localize.
492: if ($crstype eq 'Community') {
493: $preamble = &mt('You have the following active roles in this community:');
494: } else {
495: $preamble = &mt('You have the following active roles in this course:');
496: }
497: $datatable = '<form name="" action="/adm/roles">'.
498: '<input type="hidden" name="newrole" value="" />'."\n".
499: '<input type="hidden" name="selectrole" value="1" />'."\n".
500: '<input type="hidden" name="destinationurl" value="'.&HTML::Entities::encode($r->uri,'&<>"').'" />'."\n";
501: if ($env{'form.ttoken'}) {
502: $datatable .= '<input type="hidden" name="ttoken" value="'.$env{'form.ttoken'}.'" />'."\n";
503: }
504: $datatable .= &Apache::loncommon::start_data_table().
505: &Apache::loncommon::start_data_table_header_row().
506: '<th></th><th>'.&mt('User role').'</th>';
507: if ($hassection) {
508: $datatable .= '<th>'.&mt('Section').'</th>';
509: }
510: if ($hascustom) {
511: $datatable .= '<th>'.&mt('Information').'</th>';
512: }
513: $datatable .= &Apache::loncommon::end_data_table_header_row();
514: my @available = sort(keys(%{$possroles}));
515: foreach my $role ('ad','in','ta','ep','st','cr') {
516: foreach my $key (@available) {
517: if ($key =~ m{^$role($|/)}) {
518: my $trolecode = "$key./$cdom/$cnum";
519: my $rolename = &Apache::lonnet::plaintext($key,$crstype,$cdom.'_'.$cnum);
520: my $sec = $possroles->{$key};
521: if ($sec ne '') {
522: $trolecode .= '/'.$sec;
523: }
524: my $buttonname=$trolecode;
525: $buttonname=~s/\W//g;
526: $datatable .= &Apache::loncommon::start_data_table_row().
527: '<td><input name="'.$buttonname.'" type="button" value="'.
528: &mt('Select').'" onclick="javascript:enterrole(this.form,'.
529: "'$trolecode','$buttonname'".');" /></td>';
530: if ($key =~ /^cr\//) {
531: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$key);
532: $datatable .= '<td><span class="LC_nobreak">'.$rolename.'</span></td>';
533: if ($hassection) {
534: $datatable .= '<td>'.$sec.'</td>';
535: }
536: $datatable.= '<td><span class="LC_fontsize_small LC_cusr_emph">'.
537: &mt('Custom role defined by [_1]',$rauthor.':'.$rdomain).
538: '</td>';
539: } else {
540: if ($hassection) {
541: $datatable .= '<td>'.$rolename.'</td>';
542: if ($hascustom) {
543: $datatable .= '<td colspan="2">'.$sec.'</td>';
544: } else {
545: $datatable .= '<td>'.$sec.'</td>';
546: }
547: } elsif ($hascustom) {
548: $datatable .= '<td colspan="2">'.$rolename.'</td>';
549: } else {
550: $datatable .= '<td>'.$rolename.'</td>';
551: }
552: }
553: $datatable .= &Apache::loncommon::end_data_table_row();
554: }
555: }
556: }
557: $datatable .= &Apache::loncommon::end_data_table().
558: '</form>';
559: my $standby = &mt('Role selected. Please stand by.');
560: $js = <<"ENDJS";
561: <script type="text/javascript">
562: // <![CDATA[
563:
564: active=true;
565:
566: function enterrole (thisform,rolecode,buttonname) {
567: if (active) {
568: active=false;
569: document.title='$standby';
570: window.status='$standby';
571: thisform.newrole.value=rolecode;
572: thisform.submit();
573: } else {
574: alert('$standby');
575: }
576: }
577:
578: // ]]>
579: </script>
580: ENDJS
581: } else {
582: if ($linkprot) {
583: $title = 'No access';
584: $preamble = '<p>'.&mt('Access unavailable for this LON-CAPA content.').'</p>';
585: $args->{'only_body'} = 1;
586: } else {
587: $title = 'No active role';
588: $preamble = '<p>'.&mt("You have no active roles in this $lc_crstype so the page is currently unavailable to you.").'</p>';
589: $args = {'bread_crumbs' => [{'href' => '','text' => 'Role status'},],};
590: }
591: $header = &mt('No access for: [_1]','<b>'.&Apache::loncommon::plainname($env{'user.name'},
592: $env{'user.domain'}).'</b>');
593: if ((ref($futureroles) eq 'HASH') && (keys(%{$futureroles}) > 0)) {
594: my @future = sort { $a <=> $b } (keys(%{$futureroles}));
595: $preamble .= '<p>'.&mt('Access will begin: [_1].',&Apache::lonlocal::locallocaltime($future[0])).
596: ' '.&mt('Please try again then.').'</p>';
597: } elsif ((ref($expiredroles) eq 'HASH') && (keys(%{$expiredroles}) > 0)) {
598: my @expired = sort { $b <=> $a } (keys(%{$expiredroles}));
599: $preamble .= '<p>'.&mt('Access ended: [_1].',&Apache::lonlocal::locallocaltime($expired[0])).'</p>';
600: } elsif ($linkprot) {
601: if ($linkprotuser) {
602: my ($uname,$udom) = split(/:/,$linkprotuser,2);
603: $preamble .= '<p>'.&mt('As you followed a link from another system, while logged into that other system with the username: [_1], it is recommended that you contact your instructor.','<i>'.$uname.'</i>').'</p>';
604: } else {
605: my $relogin;
606: my %data = (
607: origurl => $r->uri,
608: linkprot => $linkprot,
609: linkprotexit => $linkprotexit,
610: );
611: my $token =
612: &Apache::lonnet::tmpput(\%data,$r->dir_config('lonHostID'),'retry');
613: unless (($token eq 'con_lost') || ($token eq 'refused') || ($token =~ /^error:/) ||
614: ($token eq 'unknown_cmd') || ($token eq 'no_such_host')) {
615: $relogin = '/adm/relaunch?rtoken='.$token;
616: }
617: $preamble .= '<p>'.&mt('You might try logging in with a different username and/or domain.').' '.
618: &mt('You are currently logged in as: [_1] in domain: [_2]',
619: '<i>'.$env{'user.name'}.'</i>','<i>'.$env{'user.domain'}.'</i>').'</p>';
620: if ($relogin) {
621: $preamble .= '<p>'.&mt('[_1]Log-in again[_2]','<a href="'.$relogin.'" target="_self">','</a>').'</p>';
622: }
623: }
624: }
625: if ($env{'form.ttoken'}) {
626: &Apache::lonnet::tmpdel($env{'form.ttoken'});
627: }
628: if ($ltoken) {
629: &Apache::lonnet::tmpdel($ltoken);
630: }
631: }
632: }
633: &Apache::loncommon::content_type($r,'text/html');
634: $r->send_http_header;
635: $r->print(&Apache::loncommon::start_page($title,$js,$args).
636: '<h3>'.$header.'</h3>'.
637: '<div>'.$preamble.'</div>'.
638: $datatable.
639: &Apache::loncommon::end_page());
640: return;
641: }
642:
643: sub generic_error {
644: my ($r) = @_;
645: my $continuelink;
646: unless ($env{'request.lti.login'}) {
647: my $linktext;
648: if ($env{'user.adv'}) {
649: $linktext = &mt('Continue to your roles page');
650: } else {
651: $linktext = &mt('Continue to your courses page');
652: }
653: $continuelink='<a href="/adm/roles">'.$linktext.'</a>';
654: }
655: my $msg = &mt('The page you requested does not exist.');
656: &Apache::loncommon::content_type($r,'text/html');
657: $r->send_http_header;
658: my $args = {'bread_crumbs' => [{'href' => '','text' => 'Link status'},],};
659: $r->print(&Apache::loncommon::start_page('Invalid URL',undef,$args).
660: '<div class="LC_error">'.$msg.'</div>'.
661: '<p>'.$continuelink.'</p>'.
662: &Apache::loncommon::end_page());
663: return;
664: }
665:
666: 1;
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