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 1.8.2.5 2023/07/05 19:20:19 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,$ltoken,$linkprotpbid,$linkprotpburl);
72: if ($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: $linkprotpbid = $ltoken_info{'linkprotpbid'};
82: $linkprotpburl = $ltoken_info{'linkprotpburl'};
83: } elsif ($link_info{'linkprot'}) {
84: $linkprot = $link_info{'linkprot'};
85: if ($link_info{'linkprotuser'}) {
86: $linkprotuser = $link_info{'linkprotuser'};
87: }
88: if ($link_info{'linkprotexit'}) {
89: $linkprotexit = $link_info{'linkprotexit'};
90: }
91: if ($link_info{'linkprotpbid'}) {
92: $linkprotpbid = $link_info{'linkprotpbid'};
93: }
94: if ($link_info{'linkprotpburl'}) {
95: $linkprotpburl = $link_info{'linkprotpburl'};
96: }
97: }
98: }
99: }
100: if ($env{'request.course.id'} eq $cdom.'_'.$cnum) {
101: # Check for ttoken
102: my $newlauncher = &launch_check($r->uri,$symb);
103: my ($map,$resid,$url) = &Apache::lonnet::decode_symb($symb);
104: if (&Apache::lonnet::is_on_map($url)) {
105: my $realuri;
106: if ((&Apache::lonnet::EXT('resource.0.hiddenresource',$symb) =~ /^yes$/i) &&
107: (!$env{'request.role.adv'})) {
108: $env{'user.error.msg'}=$r->uri.':bre:1:1:Access to resource denied';
109: return HTTP_NOT_ACCEPTABLE;
110: }
111: if ((&Apache::lonnet::EXT('resource.0.encrypturl',$symb) =~ /^yes$/i) &&
112: (!$env{'request.role.adv'})) {
113: $realuri = &Apache::lonenc::encrypted(&Apache::lonnet::clutter($url));
114: if (($url =~ /\.sequence$/) &&
115: ($env{'course.'.$env{'request.course.id'}.'.type'} ne 'Placement')) {
116: $realuri .= '?navmap=1';
117: } else {
118: $realuri .= '?symb='.&Apache::lonenc::encrypted($symb);
119: }
120: } else {
121: $realuri = &Apache::lonnet::clutter($url);
122: if (($url =~ /\.sequence$/) &&
123: ($env{'course.'.$env{'request.course.id'}.'.type'} ne 'Placement')) {
124: $realuri .= '?navmap=1';
125: } else {
126: $realuri .= '?symb='.$symb;
127: }
128: }
129: my ($update,$reinitresult);
130: # Check if course needs to be re-initialized
131: if ($newlauncher) {
132: $update = 1;
133: } else {
134: my $loncaparev = $r->dir_config('lonVersion');
135: ($reinitresult,my @reinit) = &Apache::loncommon::needs_coursereinit($loncaparev);
136: if (($reinitresult eq 'main') || ($reinitresult eq 'both')) {
137: $update = 1;
138: } elsif (!-e $env{'request.course.fn'}.'.db') {
139: $update = 1;
140: } elsif (!$env{'request.role.adv'}) {
141: my $navmap = Apache::lonnavmaps::navmap->new();
142: if (ref($navmap)) {
143: my $res = $navmap->getBySymb($symb);
144: if (ref($res)) {
145: my ($enc_in_bighash,$enc_in_parm);
146: $enc_in_bighash = $res->encrypted();
147: if (&Apache::lonnet::EXT('resource.0.encrypturl',$symb) =~ /^yes$/i) {
148: $enc_in_parm = 1;
149: }
150: if ($enc_in_bighash ne $enc_in_parm) {
151: $update = 1;
152: }
153: }
154: }
155: }
156: }
157: if ($update) {
158: my ($furl,$ferr)=
159: &Apache::lonuserstate::readmap($cdom.'/'.$cnum);
160: if ($ferr) {
161: $env{'user.error.msg'}=$r->uri.':bre:0:0:Course not initialized';
162: $env{'user.reinit'} = 1;
163: return HTTP_NOT_ACCEPTABLE;
164: }
165: }
166: if (($reinitresult eq 'both') || ($reinitresult eq 'supp')) {
167: my $possdel;
168: if ($reinitresult eq 'supp') {
169: $possdel = 1;
170: }
171: my ($supplemental,$refs_updated) = &Apache::loncommon::get_supplemental($cnum,$cdom,'',$possdel);
172: unless ($refs_updated) {
173: &Apache::loncommon::set_supp_httprefs($cnum,$cdom,$supplemental,$possdel);
174: }
175: }
176: my $host = $r->headers_in->get('Host');
177: if (!$host) {
178: $r->internal_redirect($realuri);
179: return OK;
180: } else {
181: my $protocol = 'http';
182: if ($r->get_server_port == 443) {
183: $protocol = 'https';
184: }
185: my $location = $protocol.'://'.$host.$realuri;
186: $r->headers_out->set(Location => $location);
187: return REDIRECT;
188: }
189: }
190: } else {
191: my %crsenv = &Apache::lonnet::coursedescription("$cdom/$cnum");
192: my @possroles = ('in','ta','ep','st','cr','ad');
193: if ($crsenv{'type'} eq 'Community') {
194: unshift(@possroles,'co');
195: } else {
196: unshift(@possroles,'cc');
197: }
198: my %roleshash =
199: &Apache::lonnet::get_my_roles($env{'user.uname'},$env{'user.domain'},
200: 'userroles',['previous','active','future'],
201: \@possroles,[$cdom],1);
202: my (%possroles,$hassection,%active,%expired,%future);
203: if (keys(%roleshash)) {
204: my $now = time;
205: foreach my $entry (keys(%roleshash)) {
206: if ($entry =~ /^\Q$cnum:$cdom:\E([^:]+):([^:]*)$/) {
207: my ($role,$sec) = ($1,$2);
208: $possroles{$role} = $sec;
209: if ($sec ne '') {
210: $hassection = 1;
211: }
212: my ($tstart,$tend)=split(/\:/,$roleshash{$entry});
213: my $status = 'active';
214: if (($tend) && ($tend<=$now)) {
215: $status = 'previous';
216: }
217: if (($tstart) && ($now<$tstart)) {
218: $status = 'future';
219: }
220: if ($status eq 'active') {
221: $active{$role} = $sec;
222: } elsif ($status eq 'previous') {
223: $expired{$tend} = $role.':'.$sec;
224: } elsif ($status eq 'future') {
225: $future{$tstart} = $role.':'.$sec;
226: }
227: }
228: }
229: }
230: my @allposs = keys(%active);
231: if ($env{'request.lti.login'}) {
232: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'});
233: if ($env{'request.lti.target'} eq '') {
234: if ($env{'form.ltitarget'} eq 'iframe') {
235: &Apache::lonnet::appenv({'request.lti.target' => 'iframe'});
236: delete($env{'form.ltitarget'});
237: }
238: }
239: if ($env{'form.selectrole'}) {
240: foreach my $role (@allposs) {
241: my $newrole = "$role./$cdom/$cnum";
242: if ($possroles{$allposs[0]} ne '') {
243: $newrole .= "/$possroles{$role}";
244: }
245: if ($env{"form.$newrole"}) {
246: my $destination .= '/adm/roles?selectrole=1&'.$newrole.'=1'.
247: '&destinationurl='.&HTML::Entities::encode($r->uri,'&<>"');
248: if ($env{'form.ltitarget'} eq 'iframe') {
249: $destination .= '<itarget=iframe';
250: }
251: &do_redirect($r,$destination);
252: return OK;
253: }
254: }
255: }
256: }
257: if (@allposs == 0) {
258: &show_roles($r,\%crsenv,\%active,'','',\%future,\%expired,$linkprot,$linkprotuser,
259: $linkprotexit,$linkprotpbid,$linkprotpburl,$ltoken);
260: } elsif (@allposs == 1) {
261: my $newrole = "$allposs[0]./$cdom/$cnum";
262: $newrole = "$allposs[0]./$cdom/$cnum";
263: if ($possroles{$allposs[0]} ne '') {
264: $newrole .= "/$possroles{$allposs[0]}";
265: }
266: my $destination .= '/adm/roles?selectrole=1&'.$newrole.'=1'.
267: '&destinationurl='.&HTML::Entities::encode($r->uri,'&<>"');
268: if ($env{'form.ttoken'}) {
269: $destination .= '&ttoken='.$env{'form.ttoken'};
270: }
271: &do_redirect($r,$destination,$linkprot);
272: } elsif (@allposs > 1) {
273: if (grep(/^(cc|co)$/,@allposs)) {
274: my $newrole;
275: if (exists($possroles{'cc'})) {
276: $newrole = 'cc';
277: } else {
278: $newrole = 'co';
279: }
280: $newrole .= "./$cdom/$cnum";
281: my $destination .= '/adm/roles?selectrole=1&'.$newrole.'=1'.
282: '&destinationurl='.&HTML::Entities::encode($r->uri,'&<>"');
283: if ($env{'form.ttoken'}) {
284: $destination .= '&ttoken='.$env{'form.ttoken'};
285: }
286: &do_redirect($r,$destination,$linkprot);
287: } else {
288: my $hascustom;
289: if (grep(/^cr\//,@allposs)) {
290: $hascustom = 1;
291: }
292: &show_roles($r,\%crsenv,\%active,$hassection,$hascustom);
293: }
294: }
295: return OK;
296: }
297: }
298: }
299: }
300: }
301: }
302: &generic_error($r);
303: return OK;
304: } else {
305: return FORBIDDEN;
306: }
307: }
308:
309: sub launch_check {
310: my ($linkuri,$symb) = @_;
311: my ($linkprotector,$linkproturi,$linkprotexit,$linkprotpbid,$linkprotpburl,$linkkey,$newlauncher);
312: if ($env{'form.ttoken'}) {
313: my %link_info = &Apache::lonnet::tmpget($env{'form.ttoken'});
314: &Apache::lonnet::tmpdel($env{'form.ttoken'});
315: delete($env{'form.ttoken'});
316: if ($link_info{'ltoken'}) {
317: unless (($link_info{'linkprot'}) || ($link_info{'linkkey'} ne '')) {
318: my %ltoken_info = &Apache::lonnet::tmpget($link_info{'ltoken'});
319: if ($ltoken_info{'linkprot'}) {
320: $link_info{'linkprot'} = $ltoken_info{'linkprot'};
321: } elsif ($ltoken_info{'linkkey'} ne '') {
322: $link_info{'linkkey'} = $ltoken_info{'linkkey'};
323: }
324: }
325: &Apache::lonnet::tmpdel($link_info{'ltoken'});
326: }
327: if ($link_info{'linkprot'}) {
328: ($linkprotector,$linkproturi) = split(/:/,$link_info{'linkprot'},2);
329: if ($env{'user.linkprotector'}) {
330: my @protectors = split(/,/,$env{'user.linkprotector'});
331: unless (grep(/^\Q$linkprotector\E$/,@protectors)) {
332: push(@protectors,$linkprotector);
333: @protectors = sort { $a <=> $b } @protectors;
334: &Apache::lonnet::appenv({'user.linkprotector' => join(',',@protectors)});
335: }
336: } else {
337: &Apache::lonnet::appenv({'user.linkprotector' => $linkprotector });
338: }
339: if ($env{'user.linkproturi'}) {
340: my @proturis = split(/,/,$env{'user.linkproturi'});
341: unless(grep(/^\Q$linkproturi\E$/,@proturis)) {
342: push(@proturis,$linkproturi);
343: @proturis = sort(@proturis);
344: &Apache::lonnet::appenv({'user.linkproturi' => join(',',@proturis)});
345: }
346: } else {
347: &Apache::lonnet::appenv({'user.linkproturi' => $linkproturi});
348: }
349: if ($link_info{'linkprotexit'}) {
350: $linkprotexit = $link_info{'linkprotexit'};
351: }
352: if ($link_info{'linkprotpbid'}) {
353: $linkprotpbid = $link_info{'linkprotpbid'};
354: }
355: if ($link_info{'linkprotpburl'}) {
356: $linkprotpburl = $link_info{'linkprotpburl'};
357: }
358: } elsif ($link_info{'linkkey'} ne '') {
359: $linkkey = $link_info{'linkkey'};
360: my $keyedlinkuri = $linkuri;
361: if ($env{'user.deeplinkkey'} ne '') {
362: my @linkkeys = split(/,/,$env{'user.deeplinkkey'});
363: unless (grep(/^\Q$linkkey\E$/,@linkkeys)) {
364: push(@linkkeys,$linkkey);
365: &Apache::lonnet::appenv({'user.deeplinkkey' => join(',',sort(@linkkeys))});
366: }
367: } else {
368: &Apache::lonnet::appenv({'user.deeplinkkey' => $linkkey});
369: }
370: if ($env{'user.keyedlinkuri'}) {
371: my @keyeduris = split(/,/,$env{'user.keyedlinkuri'});
372: unless (grep(/^\Q$keyedlinkuri\E$/,@keyeduris)) {
373: push(@keyeduris,$keyedlinkuri);
374: &Apache::lonnet::appenv({'user.keyedlinkuri' => join(',',sort(@keyeduris))});
375: }
376: } else {
377: &Apache::lonnet::appenv({'user.keyedlinkuri' => $keyedlinkuri});
378: }
379: }
380: if ($link_info{'checklaunch'}) {
381: $newlauncher = 1;
382: }
383: }
384: my $currdeeplinklogin = $env{'request.deeplink.login'};
385: my $deeplink;
386: if ($symb =~ /\.(page|sequence)$/) {
387: my $mapname = &Apache::lonnet::deversion((&Apache::lonnet::decode_symb($symb))[2]);
388: my $navmap = Apache::lonnavmaps::navmap->new();
389: if (ref($navmap)) {
390: $deeplink = $navmap->get_mapparam(undef,$mapname,'0.deeplink');
391: }
392: } else {
393: $deeplink = &Apache::lonnet::EXT('resource.0.deeplink',$symb);
394: }
395: if ($deeplink ne '') {
396: my $disallow;
397: my ($state,$others,$listed,$scope,$protect,$display,$target,$exit) = split(/,/,$deeplink);
398: if (($protect ne 'none') && ($protect ne '')) {
399: my ($acctype,$item) = split(/:/,$protect);
400: if ($acctype =~ /lti(c|d)$/) {
401: my $ltitype = $1;
402: if ($linkprotector) {
403: unless ($linkprotector.':'.$linkproturi eq $item.$ltitype.':'.$linkuri) {
404: $disallow = 1;
405: }
406: } else {
407: $disallow = 1;
408: }
409: } elsif ($acctype eq 'key') {
410: if ($linkkey ne '') {
411: unless ($linkkey eq $item) {
412: $disallow = 1;
413: }
414: } else {
415: $disallow = 1;
416: }
417: }
418: }
419: if ($disallow) {
420: if ($currdeeplinklogin eq $linkuri) {
421: &Apache::lonnet::delenv('request.deeplink.login');
422: if ($env{'request.deeplink.target'} ne '') {
423: &Apache::lonnet::delenv('request.deeplink.target');
424: }
425: if ($env{'request.linkprot'} ne '') {
426: &Apache::lonnet::delenv('request.linkprot');
427: }
428: if ($env{'request.linkprotexit'} ne '') {
429: &Apache::lonnet::delenv('request.linkprotexit');
430: }
431: if ($env{'request.linkprotpbid'} ne '') {
432: &Apache::lonnet::delenv('request.linkprotpbid');
433: }
434: if ($env{'request.linkprotpburl'} ne '') {
435: &Apache::lonnet::delenv('request.linkprotpburl');
436: }
437: }
438: } else {
439: unless ($currdeeplinklogin eq $linkuri) {
440: if (($linkprotector) || ($linkkey ne '')) {
441: if ($linkprotector) {
442: &Apache::lonnet::appenv({'request.linkprot' => $linkprotector.':'.$linkproturi});
443: } elsif ($env{'request.linkprot'}) {
444: &Apache::lonnet::delenv('request.linkprot');
445: }
446: if ($linkprotexit) {
447: &Apache::lonnet::appenv({'request.linkprotexit' => $linkprotexit});
448: } elsif ($env{'request.linkprotexit'}) {
449: &Apache::lonnet::delenv('request.linkprotexit');
450: }
451: if ($linkprotpbid) {
452: &Apache::lonnet::appenv({'request.linkprotpbid' => $linkprotpbid});
453: } elsif ($env{'request.linkprotpbid'}) {
454: &Apache::lonnet::delenv('request.linkprotpbid');
455: }
456: if ($linkprotpburl) {
457: &Apache::lonnet::appenv({'request.linkprotpburl' => $linkprotpburl});
458: } elsif ($env{'request.linkprotpburl'}) {
459: &Apache::lonnet::delenv('request.linkprotpburl');
460: }
461: if ($linkkey ne '') {
462: &Apache::lonnet::appenv({'request.linkkey' => $linkkey});
463: } elsif ($env{'request.linkkey'} ne '') {
464: &Apache::lonnet::delenv('request.linkkey');
465: }
466: $newlauncher = 1;
467: }
468: }
469: &Apache::lonnet::appenv({'request.deeplink.login' => $linkuri});
470: if ($target ne '') {
471: &Apache::lonnet::appenv({'request.deeplink.target' => $target});
472: } elsif ($env{'request.deeplink.target'} ne '') {
473: &Apache::lonnet::delenv('request.deeplink.target');
474: }
475: }
476: } else {
477: if ($linkprotector) {
478: &Apache::lonnet::appenv({'request.linkprot' => $linkprotector.':'.$linkproturi});
479: } elsif ($env{'request.linkprot'}) {
480: &Apache::lonnet::delenv('request.linkprot');
481: }
482: if ($linkprotexit) {
483: &Apache::lonnet::appenv({'request.linkprotexit' => $linkprotexit});
484: } elsif ($env{'request.linkprotexit'}) {
485: &Apache::lonnet::delenv('request.linkprotexit');
486: }
487: if ($linkprotpbid) {
488: &Apache::lonnet::appenv({'request.linkprotpbid' => $linkprotpbid});
489: } elsif ($env{'request.linkprotpbid'}) {
490: &Apache::lonnet::delenv('request.linkprotpbid');
491: }
492: if ($linkprotpburl) {
493: &Apache::lonnet::appenv({'request.linkprotpburl' => $linkprotpburl});
494: } elsif ($env{'request.linkprotpburl'}) {
495: &Apache::lonnet::delenv('request.linkprotpburl');
496: }
497: if ($linkkey ne '') {
498: &Apache::lonnet::appenv({'request.linkkey' => $linkkey});
499: } else {
500: &Apache::lonnet::delenv('request.linkkey');
501: }
502: &Apache::lonnet::appenv({'request.deeplink.login' => $linkuri});
503: if ($env{'request.deeplink.target'} ne '') {
504: &Apache::lonnet::delenv('request.deeplink.target');
505: }
506: }
507: return $newlauncher;
508: }
509:
510: sub do_redirect {
511: my ($r,$destination,$linkprot) = @_;
512: my $windowname = 'loncapaclient';
513: if ($env{'request.lti.login'}) {
514: $windowname .= 'lti';
515: }
516: my $header = '<meta HTTP-EQUIV="Refresh" CONTENT="0; url='.$destination.'" />';
517: my $args = {'bread_crumbs' => [{'href' => '','text' => 'Role initialization'},],};
518: if ($linkprot) {
519: $args = {'only_body' => 1,
520: 'redirect' => [0,$destination],};
521: }
522: &Apache::loncommon::content_type($r,'text/html');
523: $r->send_http_header;
524: if ($linkprot) {
525: $r->print(&Apache::loncommon::start_page('Valid link','',$args).
526: &Apache::loncommon::end_page());
527: } else {
528: $r->print(&Apache::loncommon::start_page('Valid link',$header,$args).
529: &Apache::lonhtmlcommon::scripttag('self.name="'.$windowname.'";').
530: '<h1>'.&mt('Welcome').'</h1>'.
531: '<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>'.
532: '<a href="'.$destination.'">'.&mt('Continue').'</a></p>'.
533: &Apache::loncommon::end_page());
534: }
535: return;
536: }
537:
538: sub show_roles {
539: my ($r,$crsenv,$possroles,$hassection,$hascustom,$futureroles,$expiredroles,
540: $linkprot,$linkprotuser,$linkprotexit,$linkprotpbid,$linkprotpburl,$ltoken) = @_;
541: my ($crsdesc,$crstype,$cdom,$cnum,$header,$title,$preamble,$datatable,$js,$args);
542: if (ref($crsenv) eq 'HASH') {
543: $crsdesc = $crsenv->{'description'};
544: $crstype = $crsenv->{'type'};
545: $cdom = $crsenv->{'domain'};
546: $cnum = $crsenv->{'num'};
547: }
548: if ($crstype eq '') {
549: $crstype = 'Course';
550: }
551: my $lc_crstype = lc($crstype);
552: if ($crsdesc ne '') {
553: $header = &mt("The page you requested belongs to the following $lc_crstype: [_1]",
554: '<i>'.$crsdesc.'</i>');
555: }
556: if (ref($possroles) eq 'HASH') {
557: if (keys(%{$possroles}) > 0) {
558: $args = {'bread_crumbs' => [{'href' => '','text' => "Choose role in $lc_crstype"},],};
559: if ($linkprot) {
560: $args = {'only_body' => 1};
561: }
562: $title = 'Choose a role'; #Do not localize.
563: if ($crstype eq 'Community') {
564: $preamble = &mt('You have the following active roles in this community:');
565: } else {
566: $preamble = &mt('You have the following active roles in this course:');
567: }
568: $datatable = '<form name="" action="/adm/roles">'.
569: '<input type="hidden" name="newrole" value="" />'."\n".
570: '<input type="hidden" name="selectrole" value="1" />'."\n".
571: '<input type="hidden" name="destinationurl" value="'.&HTML::Entities::encode($r->uri,'&<>"').'" />'."\n";
572: if ($env{'form.ttoken'}) {
573: $datatable .= '<input type="hidden" name="ttoken" value="'.$env{'form.ttoken'}.'" />'."\n";
574: }
575: $datatable .= &Apache::loncommon::start_data_table().
576: &Apache::loncommon::start_data_table_header_row().
577: '<th></th><th>'.&mt('User role').'</th>';
578: if ($hassection) {
579: $datatable .= '<th>'.&mt('Section').'</th>';
580: }
581: if ($hascustom) {
582: $datatable .= '<th>'.&mt('Information').'</th>';
583: }
584: $datatable .= &Apache::loncommon::end_data_table_header_row();
585: my @available = sort(keys(%{$possroles}));
586: foreach my $role ('ad','in','ta','ep','st','cr') {
587: foreach my $key (@available) {
588: if ($key =~ m{^$role($|/)}) {
589: my $trolecode = "$key./$cdom/$cnum";
590: my $rolename = &Apache::lonnet::plaintext($key,$crstype,$cdom.'_'.$cnum);
591: my $sec = $possroles->{$key};
592: if ($sec ne '') {
593: $trolecode .= '/'.$sec;
594: }
595: my $buttonname=$trolecode;
596: $buttonname=~s/\W//g;
597: $datatable .= &Apache::loncommon::start_data_table_row().
598: '<td><input name="'.$buttonname.'" type="button" value="'.
599: &mt('Select').'" onclick="javascript:enterrole(this.form,'.
600: "'$trolecode','$buttonname'".');" /></td>';
601: if ($key =~ /^cr\//) {
602: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$key);
603: $datatable .= '<td><span class="LC_nobreak">'.$rolename.'</span></td>';
604: if ($hassection) {
605: $datatable .= '<td>'.$sec.'</td>';
606: }
607: $datatable.= '<td><span class="LC_fontsize_small LC_cusr_emph">'.
608: &mt('Custom role defined by [_1]',$rauthor.':'.$rdomain).
609: '</td>';
610: } else {
611: if ($hassection) {
612: $datatable .= '<td>'.$rolename.'</td>';
613: if ($hascustom) {
614: $datatable .= '<td colspan="2">'.$sec.'</td>';
615: } else {
616: $datatable .= '<td>'.$sec.'</td>';
617: }
618: } elsif ($hascustom) {
619: $datatable .= '<td colspan="2">'.$rolename.'</td>';
620: } else {
621: $datatable .= '<td>'.$rolename.'</td>';
622: }
623: }
624: $datatable .= &Apache::loncommon::end_data_table_row();
625: }
626: }
627: }
628: $datatable .= &Apache::loncommon::end_data_table().
629: '</form>';
630: my $standby = &mt('Role selected. Please stand by.');
631: $js = <<"ENDJS";
632: <script type="text/javascript">
633: // <![CDATA[
634:
635: active=true;
636:
637: function enterrole (thisform,rolecode,buttonname) {
638: if (active) {
639: active=false;
640: document.title='$standby';
641: window.status='$standby';
642: thisform.newrole.value=rolecode;
643: thisform.submit();
644: } else {
645: alert('$standby');
646: }
647: }
648:
649: // ]]>
650: </script>
651: ENDJS
652: } else {
653: if ($linkprot) {
654: $title = 'No access';
655: $preamble = '<p>'.&mt('Access unavailable for this LON-CAPA content.').'</p>';
656: $args->{'only_body'} = 1;
657: } else {
658: $title = 'No active role';
659: $preamble = '<p>'.&mt("You have no active roles in this $lc_crstype so the page is currently unavailable to you.").'</p>';
660: $args = {'bread_crumbs' => [{'href' => '','text' => 'Role status'},],};
661: }
662: $header = &mt('No access for: [_1]','<b>'.&Apache::loncommon::plainname($env{'user.name'},
663: $env{'user.domain'}).'</b>');
664: if ((ref($futureroles) eq 'HASH') && (keys(%{$futureroles}) > 0)) {
665: my @future = sort { $a <=> $b } (keys(%{$futureroles}));
666: $preamble .= '<p>'.&mt('Access will begin: [_1].',&Apache::lonlocal::locallocaltime($future[0])).
667: ' '.&mt('Please try again then.').'</p>';
668: } elsif ((ref($expiredroles) eq 'HASH') && (keys(%{$expiredroles}) > 0)) {
669: my @expired = sort { $b <=> $a } (keys(%{$expiredroles}));
670: $preamble .= '<p>'.&mt('Access ended: [_1].',&Apache::lonlocal::locallocaltime($expired[0])).'</p>';
671: } elsif ($linkprot) {
672: if ($linkprotuser) {
673: my ($uname,$udom) = split(/:/,$linkprotuser,2);
674: $preamble .= '<p>'.&mt('As you followed a link from another system, while logged into that other system with the username: [_1], it is recommended that you contact your instructor.','<i>'.$uname.'</i>').'</p>';
675: } else {
676: my $relogin;
677: my %data = (
678: origurl => $r->uri,
679: linkprot => $linkprot,
680: linkprotexit => $linkprotexit,
681: linkprotpbid => $linkprotpbid,
682: linkprotpburl => $linkprotpburl,
683: );
684: my $token =
685: &Apache::lonnet::tmpput(\%data,$r->dir_config('lonHostID'),'retry');
686: unless (($token eq 'con_lost') || ($token eq 'refused') || ($token =~ /^error:/) ||
687: ($token eq 'unknown_cmd') || ($token eq 'no_such_host')) {
688: $relogin = '/adm/relaunch?rtoken='.$token;
689: }
690: $preamble .= '<p>'.&mt('You might try logging in with a different username and/or domain.').' '.
691: &mt('You are currently logged in as: [_1] in domain: [_2]',
692: '<i>'.$env{'user.name'}.'</i>','<i>'.$env{'user.domain'}.'</i>').'</p>';
693: if ($relogin) {
694: $preamble .= '<p>'.&mt('[_1]Log-in again[_2]','<a href="'.$relogin.'" target="_self">','</a>').'</p>';
695: }
696: }
697: }
698: if ($env{'form.ttoken'}) {
699: &Apache::lonnet::tmpdel($env{'form.ttoken'});
700: }
701: if ($ltoken) {
702: &Apache::lonnet::tmpdel($ltoken);
703: }
704: }
705: }
706: &Apache::loncommon::content_type($r,'text/html');
707: $r->send_http_header;
708: $r->print(&Apache::loncommon::start_page($title,$js,$args).
709: '<h3>'.$header.'</h3>'.
710: '<div>'.$preamble.'</div>'.
711: $datatable.
712: &Apache::loncommon::end_page());
713: return;
714: }
715:
716: sub generic_error {
717: my ($r) = @_;
718: my $continuelink;
719: unless ($env{'request.lti.login'}) {
720: my $linktext;
721: if ($env{'user.adv'}) {
722: $linktext = &mt('Continue to your roles page');
723: } else {
724: $linktext = &mt('Continue to your courses page');
725: }
726: $continuelink='<a href="/adm/roles">'.$linktext.'</a>';
727: }
728: my $msg = &mt('The page you requested does not exist.');
729: &Apache::loncommon::content_type($r,'text/html');
730: $r->send_http_header;
731: my $args = {'bread_crumbs' => [{'href' => '','text' => 'Link status'},],};
732: $r->print(&Apache::loncommon::start_page('Invalid URL',undef,$args).
733: '<div class="LC_error">'.$msg.'</div>'.
734: '<p>'.$continuelink.'</p>'.
735: &Apache::loncommon::end_page());
736: return;
737: }
738:
739: 1;
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