1: # The LearningOnline Network with CAPA
2: # User Roles Screen
3: #
4: # $Id: lonroles.pm,v 1.269.2.11 2013/08/08 01:59:42 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: =pod
31:
32: =head1 NAME
33:
34: Apache::lonroles - User Roles Screen
35:
36: =head1 SYNOPSIS
37:
38: Invoked by /etc/httpd/conf/srm.conf:
39:
40: <Location /adm/roles>
41: PerlAccessHandler Apache::lonacc
42: SetHandler perl-script
43: PerlHandler Apache::lonroles
44: ErrorDocument 403 /adm/login
45: ErrorDocument 500 /adm/errorhandler
46: </Location>
47:
48: =head1 OVERVIEW
49:
50: =head2 Choosing Roles
51:
52: C<lonroles> is a handler that allows a user to switch roles in
53: mid-session. LON-CAPA attempts to work with "No Role Specified", the
54: default role that a user has before selecting a role, as widely as
55: possible, but certain handlers for example need specification which
56: course they should act on, etc. Both in this scenario, and when the
57: handler determines via C<lonnet>'s C<&allowed> function that a certain
58: action is not allowed, C<lonroles> is used as error handler. This
59: allows the user to select another role which may have permission to do
60: what they were trying to do.
61:
62: =begin latex
63:
64: \begin{figure}
65: \begin{center}
66: \includegraphics[width=0.45\paperwidth,keepaspectratio]{Sample_Roles_Screen}
67: \caption{\label{Sample_Roles_Screen}Sample Roles Screen}
68: \end{center}
69: \end{figure}
70:
71: =end latex
72:
73: =head2 Role Initialization
74:
75: The privileges for a user are established at login time and stored in the session environment. As a consequence, a new role does not become active till the next login. Handlers are able to query for privileges using C<lonnet>'s C<&allowed> function. When a user first logs in, their role is the "common" role, which means that they have the sum of all of their privileges. During a session it might become necessary to choose a particular role, which as a consequence also limits the user to only the privileges in that particular role.
76:
77: =head1 INTRODUCTION
78:
79: This module enables a user to select what role he wishes to
80: operate under (instructor, student, teaching assistant, course
81: coordinator, etc). These roles are pre-established by the actions
82: of upper-level users.
83:
84: This is part of the LearningOnline Network with CAPA project
85: described at http://www.lon-capa.org.
86:
87: =head1 HANDLER SUBROUTINE
88:
89: This routine is called by Apache and mod_perl.
90:
91: =over 4
92:
93: =item *
94:
95: Roles Initialization (yes/no)
96:
97: =item *
98:
99: Get Error Message from Environment
100:
101: =item *
102:
103: Who is this?
104:
105: =item *
106:
107: Generate Page Output
108:
109: =item *
110:
111: Choice or no choice
112:
113: =item *
114:
115: Table
116:
117: =item *
118:
119: Privileges
120:
121: =back
122:
123: =cut
124:
125:
126: package Apache::lonroles;
127:
128: use strict;
129: use Apache::lonnet;
130: use Apache::lonuserstate();
131: use Apache::Constants qw(:common);
132: use Apache::File();
133: use Apache::lonmenu;
134: use Apache::loncommon;
135: use Apache::lonhtmlcommon;
136: use Apache::lonannounce;
137: use Apache::lonlocal;
138: use Apache::lonpageflip();
139: use Apache::lonnavdisplay();
140: use Apache::loncoursequeueadmin;
141: use Apache::longroup;
142: use Apache::lonrss;
143: use GDBM_File;
144: use LONCAPA qw(:DEFAULT :match);
145: use HTML::Entities;
146:
147:
148: sub redirect_user {
149: my ($r,$title,$url,$msg) = @_;
150: $msg = $title if (! defined($msg));
151: &Apache::loncommon::content_type($r,'text/html');
152: &Apache::loncommon::no_cache($r);
153: $r->send_http_header;
154: my $swinfo=&Apache::lonmenu::rawconfig();
155:
156: # Breadcrumbs
157: my $brcrum = [{'href' => $url,
158: 'text' => 'Switching Role'},];
159: my $start_page = &Apache::loncommon::start_page('Switching Role',undef,
160: {'redirect' => [1,$url],
161: 'bread_crumbs' => $brcrum,});
162: my $end_page = &Apache::loncommon::end_page();
163:
164: # Note to style police:
165: # This must only replace the spaces, nothing else, or it bombs elsewhere.
166: $url=~s/ /\%20/g;
167: $r->print(<<ENDREDIR);
168: $start_page
169: <script type="text/javascript">
170: // <![CDATA[
171: $swinfo
172: // ]]>
173: </script>
174: <p>$msg</p>
175: $end_page
176: ENDREDIR
177: return;
178: }
179:
180: sub error_page {
181: my ($r,$error,$dest)=@_;
182: &Apache::loncommon::content_type($r,'text/html');
183: &Apache::loncommon::no_cache($r);
184: $r->send_http_header;
185: return OK if $r->header_only;
186: # Breadcrumbs
187: my $brcrum = [{'href' => $dest,
188: 'text' => 'Problems during Course Initialization'},];
189: $r->print(&Apache::loncommon::start_page('Problems during Course Initialization',
190: undef,
191: {'bread_crumbs' => $brcrum,})
192: );
193: $r->print(
194: '<script type="text/javascript">'.
195: '// <![CDATA['.
196: &Apache::lonmenu::rawconfig().
197: '// ]]>'.
198: '</script>'.
199: '<p class="LC_error">'.&mt('The following problems occurred:').
200: '<br />'.
201: $error.
202: '</p><br /><a href="'.$dest.'">'.&mt('Continue').'</a>'
203: );
204: $r->print(&Apache::loncommon::end_page());
205: }
206:
207: sub handler {
208:
209: my $r = shift;
210:
211: my $now=time;
212: my $then=$env{'user.login.time'};
213: my $refresh=$env{'user.refresh.time'};
214: my $update=$env{'user.update.time'};
215: if (!$refresh) {
216: $refresh = $then;
217: }
218: if (!$update) {
219: $update = $then;
220: }
221:
222: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'});
223:
224: # -------------------------------------------------- Check if setting hot list
225: my $hotlist;
226: if ($env{'form.action'} eq 'verify_and_change_rolespref') {
227: $hotlist = &Apache::lonpreferences::verify_and_change_rolespref($r);
228: }
229:
230: # -------------------------------------------------------- Check for new roles
231: my $updateresult;
232: if ($env{'form.state'} eq 'doupdate') {
233: my $show_course=&Apache::loncommon::show_course();
234: my $checkingtxt;
235: if ($show_course) {
236: $checkingtxt = &mt('Checking for new courses ...');
237: } else {
238: $checkingtxt = &mt('Checking for new roles ...');
239: }
240: $updateresult = $checkingtxt;
241: $updateresult .= &update_session_roles();
242: &Apache::lonnet::appenv({'user.update.time' => $now});
243: $update = $now;
244: &Apache::loncoursequeueadmin::reqauthor_check();
245: }
246:
247: # -------------------------------------------------- Check for author requests
248: my $reqauthor;
249: if ($env{'form.state'} eq 'requestauthor') {
250: $reqauthor = &Apache::loncoursequeueadmin::process_reqauthor(\$update);
251: }
252:
253: my $envkey;
254: my %dcroles = ();
255: my $numdc = &check_fordc(\%dcroles,$update,$then);
256: my $loncaparev = $Apache::lonnet::perlvar{'lonVersion'};
257:
258: # ================================================================== Roles Init
259: if ($env{'form.selectrole'}) {
260:
261: my $locknum=&Apache::lonnet::get_locks();
262: if ($locknum) { return 409; }
263:
264: if ($env{'form.newrole'}) {
265: $env{'form.'.$env{'form.newrole'}}=1;
266: }
267: if ($env{'request.course.id'}) {
268: # Check if user is CC trying to select a course role
269: if ($env{'form.switchrole'}) {
270: my $switch_is_active;
271: if (defined($env{'user.role.'.$env{'form.switchrole'}})) {
272: my ($start,$end) = split(/\./,$env{'user.role.'.$env{'form.switchrole'}});
273: if (!$end || $end > $now) {
274: if (!$start || $start < $update) {
275: $switch_is_active = 1;
276: }
277: }
278: }
279: unless ($switch_is_active) {
280: &adhoc_course_role($refresh,$update,$then);
281: }
282: }
283: my %temp=('logout_'.$env{'request.course.id'} => time);
284: &Apache::lonnet::put('email_status',\%temp);
285: &Apache::lonnet::delenv('user.state.'.$env{'request.course.id'});
286: }
287: &Apache::lonnet::appenv({"request.course.id" => '',
288: "request.course.fn" => '',
289: "request.course.uri" => '',
290: "request.course.sec" => '',
291: "request.course.tied" => '',
292: "request.role" => 'cm',
293: "request.role.adv" => $env{'user.adv'},
294: "request.role.domain" => $env{'user.domain'}});
295: # Check if user is a DC trying to enter a course or author space and needs privs to be created
296: if ($numdc > 0) {
297: foreach my $envkey (keys %env) {
298: # Is this an ad-hoc Coordinator role?
299: if (my ($ccrole,$domain,$coursenum) =
300: ($envkey =~ m-^form\.(cc|co)\./($match_domain)/($match_courseid)$-)) {
301: if ($dcroles{$domain}) {
302: if (&Apache::lonnet::check_adhoc_privs($domain,$coursenum,
303: $update,$refresh,$now,$ccrole)) {
304: &Apache::lonnet::appenv({"environment.internal.$domain.$coursenum.$ccrole.adhoc" => time});
305: }
306: }
307: last;
308: }
309: # Is this an ad-hoc CA-role?
310: if (my ($domain,$user) =
311: ($envkey =~ m-^form\.ca\./($match_domain)/($match_username)$-)) {
312: if (($domain eq $env{'user.domain'}) && ($user eq $env{'user.name'})) {
313: delete($env{$envkey});
314: $env{'form.au./'.$domain.'/'} = 1;
315: my ($server_status,$home) = &check_author_homeserver($user,$domain);
316: if ($server_status eq 'switchserver') {
317: my $trolecode = 'au./'.$domain.'/';
318: my $switchserver = '/adm/switchserver?otherserver='.$home.'&role='.$trolecode;
319: $r->internal_redirect($switchserver);
320: return OK;
321: }
322: last;
323: }
324: if (my ($castart,$caend) = ($env{'user.role.ca./'.$domain.'/'.$user} =~ /^(\d*)\.(\d*)$/)) {
325: if (((($castart) && ($castart < $now)) || !$castart) &&
326: ((!$caend) || (($caend) && ($caend > $now)))) {
327: my ($server_status,$home) = &check_author_homeserver($user,$domain);
328: if ($server_status eq 'switchserver') {
329: my $trolecode = 'ca./'.$domain.'/'.$user;
330: my $switchserver = '/adm/switchserver?otherserver='.$home.'&role='.$trolecode;
331: $r->internal_redirect($switchserver);
332: return OK;
333: }
334: last;
335: }
336: }
337: # Check if author blocked ca-access
338: my %blocked=&Apache::lonnet::get('environment',['domcoord.author'],$domain,$user);
339: if ($blocked{'domcoord.author'} eq 'blocked') {
340: delete($env{$envkey});
341: $env{'user.error.msg'}=':::1:User '.$user.' in domain '.$domain.' blocked domain coordinator access';
342: last;
343: }
344: if ($dcroles{$domain}) {
345: my ($server_status,$home) = &check_author_homeserver($user,$domain);
346: if (($server_status eq 'ok') || ($server_status eq 'switchserver')) {
347: &Apache::lonnet::check_adhoc_privs($domain,$user,$update,
348: $refresh,$now,'ca');
349: if ($server_status eq 'switchserver') {
350: my $trolecode = 'ca./'.$domain.'/'.$user;
351: my $switchserver = '/adm/switchserver?'
352: .'otherserver='.$home.'&role='.$trolecode;
353: $r->internal_redirect($switchserver);
354: return OK;
355: }
356: } else {
357: delete($env{$envkey});
358: }
359: } else {
360: delete($env{$envkey});
361: }
362: last;
363: }
364: }
365: }
366:
367: foreach $envkey (keys %env) {
368: next if ($envkey!~/^user\.role\./);
369: my ($where,$trolecode,$role,$tstatus,$tend,$tstart);
370: &Apache::lonnet::role_status($envkey,$update,$refresh,$now,\$role,\$where,
371: \$trolecode,\$tstatus,\$tstart,\$tend);
372: if ($env{'form.'.$trolecode}) {
373: if ($tstatus eq 'is') {
374: $where=~s/^\///;
375: my ($cdom,$cnum,$csec)=split(/\//,$where);
376: if (($cnum) && ($role ne 'ca') && ($role ne 'aa')) {
377: my $home = $env{'course.'.$cdom.'_'.$cnum.'.home'};
378: my @ids = &Apache::lonnet::current_machine_ids();
379: unless ($loncaparev eq '' && $home && grep(/^\Q$home\E$/,@ids)) {
380: my %curr_reqd_hash = &Apache::lonnet::userenvironment($cdom,$cnum,'internal.releaserequired');
381: if ($curr_reqd_hash{'internal.releaserequired'} ne '') {
382: my ($switchserver,$switchwarning) =
383: &check_release_required($loncaparev,$cdom.'_'.$cnum,$trolecode,$curr_reqd_hash{'internal.releaserequired'});
384: if ($switchwarning ne '' || $switchserver ne '') {
385: &Apache::loncommon::content_type($r,'text/html');
386: &Apache::loncommon::no_cache($r);
387: $r->send_http_header;
388: my $end_page=&Apache::loncommon::end_page();
389: $r->print(&Apache::loncommon::start_page('Selected course unavailable on this server').
390: '<p class="LC_warning">');
391: if ($switchwarning) {
392: $r->print($switchwarning.'<br /><a href="/adm/roles">');
393: if (&Apache::loncommon::show_course()) {
394: $r->print(&mt('Display courses'));
395: } else {
396: $r->print(&mt('Display roles'));
397: }
398: $r->print('</a>');
399: } elsif ($switchserver) {
400: $r->print(&mt('This course requires a newer version of LON-CAPA than is installed on this server.').
401: '<br />'.
402: '<a href="/adm/switchserver?'.$switchserver.'">'.
403: &mt('Switch Server').
404: '</a>');
405: }
406: $r->print('</p>'.&Apache::loncommon::end_page());
407: return OK;
408: }
409: }
410: }
411: }
412: # check for course groups
413: my %coursegroups = &Apache::lonnet::get_active_groups(
414: $env{'user.domain'},$env{'user.name'},$cdom, $cnum);
415: my $cgrps = join(':',keys(%coursegroups));
416:
417: # store role if recent_role list being kept
418: if ($env{'environment.recentroles'}) {
419: my %frozen_roles =
420: &Apache::lonhtmlcommon::get_recent_frozen('roles',$env{'environment.recentrolesn'});
421: &Apache::lonhtmlcommon::store_recent('roles',
422: $trolecode,' ',$frozen_roles{$trolecode});
423: }
424:
425:
426: # check for keyed access
427: if (($role eq 'st') &&
428: ($env{'course.'.$cdom.'_'.$cnum.'.keyaccess'} eq 'yes')) {
429: # who is key authority?
430: my $authdom=$cdom;
431: my $authnum=$cnum;
432: if ($env{'course.'.$cdom.'_'.$cnum.'.keyauth'}) {
433: ($authnum,$authdom)=
434: split(/:/,$env{'course.'.$cdom.'_'.$cnum.'.keyauth'});
435: }
436: # check with key authority
437: unless (&Apache::lonnet::validate_access_key(
438: $env{'environment.key.'.$cdom.'_'.$cnum},
439: $authdom,$authnum)) {
440: # there is no valid key
441: if ($env{'form.newkey'}) {
442: # student attempts to register a new key
443: &Apache::loncommon::content_type($r,'text/html');
444: &Apache::loncommon::no_cache($r);
445: $r->send_http_header;
446: my $swinfo=&Apache::lonmenu::rawconfig();
447: my $start_page=&Apache::loncommon::start_page
448: ('Verifying Access Key to Unlock this Course');
449: my $end_page=&Apache::loncommon::end_page();
450: my $buttontext=&mt('Enter Course');
451: my $message=&mt('Successfully registered key');
452: my $assignresult=
453: &Apache::lonnet::assign_access_key(
454: $env{'form.newkey'},
455: $authdom,$authnum,
456: $cdom,$cnum,
457: $env{'user.domain'},
458: $env{'user.name'},
459: &mt('Assigned from [_1] at [_2] for [_3]'
460: ,$ENV{'REMOTE_ADDR'}
461: ,&Apache::lonlocal::locallocaltime()
462: ,$trolecode)
463: );
464: unless ($assignresult eq 'ok') {
465: $assignresult=~s/^error\:\s*//;
466: $message=&mt($assignresult).
467: '<br /><a href="/adm/logout">'.
468: &mt('Logout').'</a>';
469: $buttontext=&mt('Re-Enter Key');
470: }
471: $r->print(<<ENDENTEREDKEY);
472: $start_page
473: <script type="text/javascript">
474: // <![CDATA[
475: $swinfo
476: // ]]>
477: </script>
478: <form action="" method="post">
479: <input type="hidden" name="selectrole" value="1" />
480: <input type="hidden" name="$trolecode" value="1" />
481: <span class="LC_fontsize_large">$message</span><br />
482: <input type="submit" value="$buttontext" />
483: </form>
484: $end_page
485: ENDENTEREDKEY
486: return OK;
487: } else {
488: # print form to enter a new key
489: &Apache::loncommon::content_type($r,'text/html');
490: &Apache::loncommon::no_cache($r);
491: $r->send_http_header;
492: my $swinfo=&Apache::lonmenu::rawconfig();
493: my $start_page=&Apache::loncommon::start_page
494: ('Enter Access Key to Unlock this Course');
495: my $end_page=&Apache::loncommon::end_page();
496: $r->print(<<ENDENTERKEY);
497: $start_page
498: <script type="text/javascript">
499: // <![CDATA[
500: $swinfo
501: // ]]>
502: </script>
503: <form action="" method="post">
504: <input type="hidden" name="selectrole" value="1" />
505: <input type="hidden" name="$trolecode" value="1" />
506: <input type="text" size="20" name="newkey" value="$env{'form.newkey'}" />
507: <input type="submit" value="Enter key" />
508: </form>
509: $end_page
510: ENDENTERKEY
511: return OK;
512: }
513: }
514: }
515: &Apache::lonnet::log($env{'user.domain'},
516: $env{'user.name'},
517: $env{'user.home'},
518: "Role ".$trolecode);
519:
520: &Apache::lonnet::appenv(
521: {'request.role' => $trolecode,
522: 'request.role.domain' => $cdom,
523: 'request.course.sec' => $csec,
524: 'request.course.groups' => $cgrps});
525: my $tadv=0;
526:
527: if (($cnum) && ($role ne 'ca') && ($role ne 'aa')) {
528: my $msg;
529: my ($furl,$ferr)=
530: &Apache::lonuserstate::readmap($cdom.'/'.$cnum);
531: unless ($ferr) {
532: unless (($env{'form.switchrole'}) ||
533: ($env{"environment.internal.$cdom.$cnum.$role.adhoc"})) {
534: &Apache::lonnet::put('nohist_crslastlogin',
535: {$env{'user.name'}.':'.$env{'user.domain'}.
536: ':'.$csec.':'.$role => $now},$cdom,$cnum);
537: }
538: my ($feeds,$syllabus_time);
539: &Apache::lonrss::advertisefeeds($cnum,$cdom,undef,\$feeds);
540: &Apache::lonnet::appenv({'request.course.feeds' => $feeds});
541: &Apache::lonnet::get_numsuppfiles($cnum,$cdom,1);
542: unless ($env{'course.'.$cdom.'_'.$cnum.'.updatedsyllabus'}) {
543: unless (($env{'course.'.$cdom.'_'.$cnum.'.externalsyllabus'}) ||
544: ($env{'course.'.$cdom.'_'.$cnum.'.uploadedsyllabus'})) {
545: my %syllabus=&Apache::lonnet::dump('syllabus',$cdom,$cnum);
546: $syllabus_time = $syllabus{'uploaded.lastmodified'};
547: if ($syllabus_time) {
548: &Apache::lonnet::appenv({'request.course.syllabustime' => $syllabus_time});
549: }
550: }
551: }
552: }
553: if (($env{'form.orgurl'}) &&
554: ($env{'form.orgurl'}!~/^\/adm\/flip/)) {
555: my $dest=$env{'form.orgurl'};
556: if ($env{'form.symb'}) {
557: if ($dest =~ /\?/) {
558: $dest .= '&';
559: } else {
560: $dest .= '?'
561: }
562: $dest .= 'symb='.$env{'form.symb'};
563: }
564: if (&Apache::lonnet::allowed('adv') eq 'F') { $tadv=1; }
565: &Apache::lonnet::appenv({'request.role.adv'=>$tadv});
566: if (($ferr) && ($tadv)) {
567: &error_page($r,$ferr,$dest);
568: } else {
569: if ($dest =~ m{^/adm/coursedocs\?folderpath}) {
570: if ($env{'request.course.id'} eq $cdom.'_'.$cnum) {
571: my $chome = &Apache::lonnet::homeserver($cnum,$cdom);
572: &Apache::loncommon::update_content_constraints($cdom,$cnum,$chome,
573: $cdom.'_'.$cnum);
574: }
575: }
576: $r->internal_redirect($dest);
577: }
578: return OK;
579: } else {
580: if (!$env{'request.course.id'}) {
581: &Apache::lonnet::appenv(
582: {"request.course.id" => $cdom.'_'.$cnum});
583: $furl='/adm/roles?tryagain=1';
584: $msg='<p><span class="LC_error">'
585: .&mt('Could not initialize [_1] at this time.',
586: $env{'course.'.$cdom.'_'.$cnum.'.description'})
587: .'</span></p>'
588: .'<p>'.&mt('Please try again.').'</p>'
589: .'<p>'.$ferr.'</p>';
590: }
591: if (&Apache::lonnet::allowed('adv') eq 'F') { $tadv=1; }
592: &Apache::lonnet::appenv({'request.role.adv'=>$tadv});
593:
594: if (($ferr) && ($tadv)) {
595: &error_page($r,$ferr,$furl);
596: } else {
597: # Check to see if the user is a CC entering a course
598: # for the first time
599: my (undef, undef, $role, $courseid) = split(/\./, $envkey);
600: if (substr($courseid, 0, 1) eq '/') {
601: $courseid = substr($courseid, 1);
602: }
603: $courseid =~ s/\//_/;
604: if ((($role eq 'cc') || ($role eq 'co'))
605: && ($env{'course.' . $courseid .'.course.helper.not.run'})) {
606: $furl = "/adm/helper/course.initialization.helper";
607: # Send the user to the course they selected
608: } elsif ($env{'request.course.id'}) {
609: my ($dest,$destsymb,$checkenc);
610: $dest = $env{'form.destinationurl'};
611: $destsymb = $env{'form.destsymb'};
612: if ($dest ne '') {
613: if ($env{'form.switchrole'}) {
614: if ($destsymb ne '') {
615: if ($destsymb !~ m{^/enc/}) {
616: unless ($env{'request.role.adv'}) {
617: $checkenc = 1;
618: }
619: }
620: }
621: if ($dest =~ m{^/enc/}) {
622: if ($env{'request.role.adv'}) {
623: $dest = &Apache::lonenc::unencrypted($dest);
624: if ($destsymb eq '') {
625: ($destsymb) = ($dest =~ /(?:\?|\&)symb=([^\&]*)/);
626: $destsymb = &unescape($destsymb);
627: }
628: }
629: } else {
630: if ($destsymb eq '') {
631: ($destsymb) = ($dest =~ /(?:\?|\&)symb=([^\&]+)/);
632: $destsymb = &unescape($destsymb);
633: }
634: unless ($env{'request.role.adv'}) {
635: $checkenc = 1;
636: }
637: }
638: if (($checkenc) && ($destsymb ne '')) {
639: my ($encstate,$unencsymb,$res);
640: $unencsymb = &Apache::lonnet::symbclean($destsymb);
641: (undef,undef,$res) = &Apache::lonnet::decode_symb($unencsymb);
642: &Apache::lonnet::symbverify($unencsymb,$res,\$encstate);
643: if ($encstate) {
644: if (($dest ne '') && ($dest !~ m{^/enc/})) {
645: $dest=&Apache::lonenc::encrypted($dest);
646: }
647: }
648: }
649: }
650: unless (($dest =~ m{^/enc/}) || ($dest =~ /(\?|\&)symb=.+___\d+___.+/)) {
651: if (($destsymb ne '') && ($destsymb !~ m{^/enc/})) {
652: my $esc_symb = &escape($destsymb);
653: $dest .= '?symb='.$esc_symb;
654: }
655: }
656: &redirect_user($r, &mt('Entering [_1]',
657: $env{'course.'.$courseid.'.description'}),
658: $dest, $msg);
659: return OK;
660: }
661: if (&Apache::lonnet::allowed('whn',
662: $env{'request.course.id'})
663: || &Apache::lonnet::allowed('whn',
664: $env{'request.course.id'}.'/'
665: .$env{'request.course.sec'})
666: ) {
667: my $startpage = &courseloadpage($courseid);
668: unless ($startpage eq 'firstres') {
669: $msg = &mt('Entering [_1] ...',
670: $env{'course.'.$courseid.'.description'});
671: &redirect_user($r, &mt('New in course'),
672: '/adm/whatsnew?refpage=start', $msg);
673: return OK;
674: }
675: }
676: }
677: # Are we allowed to look at the first resource?
678: if ($furl !~ m|^/adm/|) {
679: # Guess not ...
680: $furl=&Apache::lonpageflip::first_accessible_resource();
681: }
682: $msg = &mt('Entering [_1] ...',
683: $env{'course.'.$courseid.'.description'});
684: &redirect_user($r, &mt('Entering [_1]',
685: $env{'course.'.$courseid.'.description'}),
686: $furl, $msg);
687: }
688: return OK;
689: }
690: }
691: #
692: # Send the user to the construction space they selected
693: if ($role =~ /^(au|ca|aa)$/) {
694: my $redirect_url = '/priv/';
695: if ($role eq 'au') {
696: $redirect_url.=$env{'user.domain'}.'/'.$env{'user.name'};
697: } else {
698: $redirect_url .= $where;
699: }
700: $redirect_url .= '/';
701: &redirect_user($r,&mt('Entering Authoring Space'),
702: $redirect_url);
703: return OK;
704: }
705: if ($role eq 'dc') {
706: my $redirect_url = '/adm/menu/';
707: &redirect_user($r,&mt('Loading Domain Coordinator Menu'),
708: $redirect_url);
709: return OK;
710: }
711: if ($role eq 'sc') {
712: my $redirect_url = '/adm/grades?command=scantronupload';
713: &redirect_user($r,&mt('Loading Data Upload Page'),
714: $redirect_url);
715: return OK;
716: }
717: }
718: }
719: }
720: }
721:
722:
723: # =============================================================== No Roles Init
724:
725: &Apache::loncommon::content_type($r,'text/html');
726: &Apache::loncommon::no_cache($r);
727: $r->send_http_header;
728: return OK if $r->header_only;
729:
730: my $crumbtext = 'User Roles';
731: my $pagetitle = 'My Roles';
732: my $recent = &mt('Recent Roles');
733: my $standby = &mt('Role selected. Please stand by.');
734: my $show_course=&Apache::loncommon::show_course();
735: if ($show_course) {
736: $crumbtext = 'Courses';
737: $pagetitle = 'My Courses';
738: $recent = &mt('Recent Courses');
739: $standby = &mt('Course selected. Please stand by.');
740: }
741: my $brcrum =[{href=>"/adm/roles",text=>$crumbtext}];
742:
743: my %roles_in_env;
744: my $showcount = &roles_from_env(\%roles_in_env,$update);
745:
746: my $swinfo=&Apache::lonmenu::rawconfig();
747: my $start_page=&Apache::loncommon::start_page($pagetitle,undef,{bread_crumbs=>$brcrum});
748: my $funcs = &get_roles_functions($showcount);
749: my $standby=&mt('Role selected. Please stand by.');
750: $standby=~s/\n/\\n/g;
751: my $noscript='<br /><span class="LC_error">'.&mt('Use of LON-CAPA requires Javascript to be enabled in your web browser.').'<br />'.&mt('As this is not the case, most functionality in the system will be unavailable.').'</span><br />';
752:
753: $r->print(<<ENDHEADER);
754: $start_page
755: $funcs
756: <noscript>
757: $noscript
758: </noscript>
759: <script type="text/javascript">
760: // <![CDATA[
761: $swinfo
762: window.focus();
763:
764: active=true;
765:
766: function enterrole (thisform,rolecode,buttonname) {
767: if (active) {
768: active=false;
769: document.title='$standby';
770: window.status='$standby';
771: thisform.newrole.value=rolecode;
772: thisform.submit();
773: } else {
774: alert('$standby');
775: }
776: }
777:
778: function rolesView (caller) {
779: if ((caller == 'showall') || (caller == 'noshowall')) {
780: document.rolechoice.display.value = caller;
781: } else {
782: if ((caller == 'doupdate') || (caller == 'requestauthor') ||
783: (caller == 'queued')) {
784: document.rolechoice.state.value = caller;
785: }
786: }
787: document.rolechoice.selectrole.value='';
788: document.rolechoice.submit();
789: }
790:
791: // ]]>
792: </script>
793: ENDHEADER
794:
795: # ------------------------------------------ Get Error Message from Environment
796:
797: my ($fn,$priv,$nochoose,$error,$msg)=split(/:/,$env{'user.error.msg'});
798: if ($env{'user.error.msg'}) {
799: $r->log_reason(
800: "$msg for $env{'user.name'} domain $env{'user.domain'} access $priv",$fn);
801: }
802:
803: # ------------------------------------------------- Can this user re-init, etc?
804:
805: my $advanced=$env{'user.adv'};
806: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['tryagain']);
807: my $tryagain=$env{'form.tryagain'};
808: my $reinit=$env{'user.reinit'};
809: delete $env{'user.reinit'};
810:
811: # -------------------------------------------------------- Generate Page Output
812: # --------------------------------------------------------------- Error Header?
813: if ($error) {
814: $r->print("<h1>".&mt('LON-CAPA Access Control')."</h1>");
815: $r->print("<!-- LONCAPAACCESSCONTROLERRORSCREEN --><hr /><pre>");
816: if ($priv ne '') {
817: $r->print(&mt('Access : ').&Apache::lonnet::plaintext($priv)."\n");
818: }
819: if ($fn ne '') {
820: $r->print(&mt('Resource: ').&Apache::lonenc::check_encrypt($fn)."\n");
821: }
822: if ($msg ne '') {
823: $r->print(&mt('Action : ').$msg."\n");
824: }
825: $r->print("</pre><hr />");
826: my $url=$fn;
827: my $last;
828: if (tie(my %hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
829: &GDBM_READER(),0640)) {
830: $last=$hash{'last_known'};
831: untie(%hash);
832: }
833: if ($last) { $fn.='?symb='.&escape($last); }
834:
835: &Apache::londocs::changewarning($r,undef,'You have modified your course recently, [_1] may fix this access problem.',
836: &Apache::lonenc::check_encrypt($fn));
837: } else {
838: if ($env{'user.error.msg'}) {
839: if ($reinit) {
840: $r->print(
841: '<h3><span class="LC_error">'.
842: &mt('As your session file for the course or community has expired, you will need to re-select it.').'</span></h3>');
843: } else {
844: $r->print(
845: '<h3><span class="LC_error">'.
846: &mt('You need to choose another user role or enter a specific course or community for this function.').
847: '</span></h3>');
848: }
849: }
850: }
851: if ($nochoose) {
852: $r->print("<h2>".&mt('Sorry ...')."</h2>\n<span class='LC_error'>".
853: &mt('This action is currently not authorized.').'</span>'.
854: &Apache::loncommon::end_page());
855: return OK;
856: } else {
857: if ($updateresult || $reqauthor || $hotlist) {
858: my $showresult = '<div>';
859: if ($updateresult) {
860: $showresult .= &Apache::lonhtmlcommon::confirm_success($updateresult);
861: }
862: if ($reqauthor) {
863: $showresult .= &Apache::lonhtmlcommon::confirm_success($reqauthor);
864: }
865: if ($hotlist) {
866: $showresult .= $hotlist;
867: }
868: $showresult .= '</div>';
869: $r->print($showresult);
870: } elsif ($env{'form.state'} eq 'queued') {
871: $r->print(&get_queued());
872: }
873: if (($ENV{'REDIRECT_QUERY_STRING'}) && ($fn)) {
874: $fn.='?'.$ENV{'REDIRECT_QUERY_STRING'};
875: }
876: my $display = ($env{'form.display'} =~ /^(showall)$/);
877: $r->print('<form method="post" name="rolechoice" action="'.(($fn)?$fn:$r->uri).'">');
878: $r->print('<input type="hidden" name="orgurl" value="'.$fn.'" />');
879: $r->print('<input type="hidden" name="selectrole" value="1" />');
880: $r->print('<input type="hidden" name="newrole" value="" />');
881: $r->print('<input type="hidden" name="display" value="'.$display.'" />');
882: $r->print('<input type="hidden" name="state" value="" />');
883: }
884: $r->rflush();
885:
886: my (%roletext,%sortrole,%roleclass,%futureroles,%timezones);
887: my ($countactive,$countfuture,$inrole,$possiblerole) =
888: &gather_roles($update,$refresh,$now,$reinit,$nochoose,\%roles_in_env,\%roletext,
889: \%sortrole,\%roleclass,\%futureroles,\%timezones,$loncaparev);
890: $refresh = $now;
891: &Apache::lonnet::appenv({'user.refresh.time' => $refresh});
892: unless ($env{'user.adv'}) {
893: if ($countactive > 0) {
894: my $domdesc = &Apache::lonnet::domain($env{'user.domain'},'description');
895: my $esc_dom = &HTML::Entities::encode($env{'user.domain'},'"<>&');
896: $r->print(
897: '<p>'
898: .&mt('[_1]Visit the [_2]Course/Community Catalog[_3]'
899: .' to view all [_4] LON-CAPA courses and communities.'
900: ,'<b>'
901: ,'<a href="/adm/coursecatalog?showdom='.$esc_dom.'">'
902: ,'</a></b>',$domdesc)
903: .'<br />'
904: .&mt('If a course or community is [_1]not[_2] in your list of current courses and communities below,'
905: .' you may be able to enroll if self-enrollment is permitted.'
906: ,'<b>','</b>')
907: .'</p>'
908: );
909: }
910: }
911:
912: # No active roles
913: if ($countactive==0) {
914: if ($inrole) {
915: $r->print('<h2>'.&mt('Currently no additional roles, courses or communities').'</h2>');
916: } else {
917: $r->print('<h2>'.&mt('Currently no active roles, courses or communities').'</h2>');
918: }
919: &findcourse_advice($r);
920: &requestcourse_advice($r);
921: $r->print('</form>');
922: if ($countfuture) {
923: $r->print(&mt('The following [quant,_1,role,roles] will become active in the future:',$countfuture));
924: my $doheaders = &roletable_headers($r,\%roleclass,\%sortrole,
925: $nochoose);
926: &print_rolerows($r,$doheaders,\%roleclass,\%sortrole,\%dcroles,
927: \%roletext);
928: my $tremark='';
929: my $tbg;
930: if ($env{'request.role'} eq 'cm') {
931: $tbg="LC_roles_selected";
932: $tremark=&mt('Currently selected.').' ';
933: } else {
934: $tbg="LC_roles_is";
935: }
936: $r->print(&Apache::loncommon::start_data_table_row()
937: .'<td class="'.$tbg.'"> </td>'
938: .'<td colspan="3">'
939: .&mt('No role specified')
940: .'</td>'
941: .'<td>'.$tremark.' </td>'
942: .&Apache::loncommon::end_data_table_row()
943: );
944:
945: $r->print(&Apache::loncommon::end_data_table());
946: }
947: $r->print(&Apache::loncommon::end_page());
948: return OK;
949: }
950: # ----------------------------------------------------------------------- Table
951:
952: if ($numdc > 0) {
953: $r->print(&coursepick_jscript());
954: $r->print(&Apache::loncommon::coursebrowser_javascript().
955: &Apache::loncommon::authorbrowser_javascript());
956: }
957:
958: unless ((!&Apache::loncommon::show_course()) || ($nochoose) || ($countactive==1)) {
959: $r->print("<h2>".&mt('Select a Course to Enter')."</h2>\n");
960: }
961: if ($env{'form.destinationurl'}) {
962: $r->print('<input type="hidden" name="destinationurl" value="'.
963: $env{'form.destinationurl'}.'" />');
964: if ($env{'form.destsymb'} ne '') {
965: $r->print('<input type="hidden" name="destsymb" value="'.
966: $env{'form.destsymb'}.'" />');
967: }
968: }
969:
970: my $doheaders = &roletable_headers($r,\%roleclass,\%sortrole,$nochoose);
971: if ($env{'environment.recentroles'}) {
972: my %recent_roles =
973: &Apache::lonhtmlcommon::get_recent('roles',$env{'environment.recentrolesn'});
974: my $output='';
975: foreach my $role (sort(keys(%recent_roles))) {
976: if (ref($roletext{'user.role.'.$role}) eq 'ARRAY') {
977: $output.= &Apache::loncommon::start_data_table_row().
978: $roletext{'user.role.'.$role}->[0].
979: &Apache::loncommon::end_data_table_row();
980: if ($roletext{'user.role.'.$role}->[1] ne '') {
981: $output .= &Apache::loncommon::continue_data_table_row().
982: $roletext{'user.role.'.$role}->[1].
983: &Apache::loncommon::end_data_table_row();
984: }
985: if ($role =~ m{dc\./($match_domain)/}
986: && $dcroles{$1}) {
987: $output .= &adhoc_roles_row($1,'recent');
988: }
989: } elsif ($numdc > 0) {
990: unless ($role =~/^error\:/) {
991: my ($roletext,$role_text_end) = &display_cc_role('user.role.'.$role);
992: if ($roletext) {
993: $output.= &Apache::loncommon::start_data_table_row().
994: $roletext.
995: &Apache::loncommon::end_data_table_row();
996: if ($role_text_end) {
997: $output .= &Apache::loncommon::continue_data_table_row().
998: $role_text_end.
999: &Apache::loncommon::end_data_table_row();
1000: }
1001: }
1002: }
1003: }
1004: }
1005: if ($output) {
1006: $r->print(&Apache::loncommon::start_data_table_empty_row()
1007: .'<td align="center" colspan="5">'
1008: .$recent
1009: .'</td>'
1010: .&Apache::loncommon::end_data_table_empty_row()
1011: );
1012: $r->print($output);
1013: $doheaders ++;
1014: }
1015: }
1016: &print_rolerows($r,$doheaders,\%roleclass,\%sortrole,\%dcroles,\%roletext);
1017: if ($countactive > 1) {
1018: my $tremark='';
1019: my $tbg;
1020: if ($env{'request.role'} eq 'cm') {
1021: $tbg="LC_roles_selected";
1022: $tremark=&mt('Currently selected.').' ';
1023: } else {
1024: $tbg="LC_roles_is";
1025: }
1026: $r->print(&Apache::loncommon::start_data_table_row());
1027: unless ($nochoose) {
1028: if ($env{'request.role'} ne 'cm') {
1029: $r->print('<td class="'.$tbg.'"><input type="submit" value="'.
1030: &mt('Select').'" name="cm" /></td>');
1031: } else {
1032: $r->print('<td class="'.$tbg.'"> </td>');
1033: }
1034: }
1035: $r->print('<td colspan="3">'
1036: .&mt('No role specified')
1037: .'</td>'
1038: .'<td>'.$tremark.' </td>'
1039: .&Apache::loncommon::end_data_table_row()
1040: );
1041: }
1042: $r->print(&Apache::loncommon::end_data_table());
1043: unless ($nochoose) {
1044: $r->print("</form>\n");
1045: }
1046: # ------------------------------------------------------------ Privileges Info
1047: if (($advanced) && (($env{'user.error.msg'}) || ($error))) {
1048: $r->print('<hr /><h2>'.&mt('Current Privileges').'</h2>');
1049: $r->print(&privileges_info());
1050: }
1051: my $announcements = &Apache::lonnet::getannounce();
1052: $r->print(
1053: '<br />'.
1054: '<h2>'.&mt('Announcements').'</h2>'.
1055: $announcements
1056: ) unless (!$announcements);
1057: if ($advanced) {
1058: my $esc_dom = &HTML::Entities::encode($env{'user.domain'},'"<>&');
1059: $r->print('<p><small><i>'
1060: .&mt('This LON-CAPA server is version [_1]',$r->dir_config('lonVersion'))
1061: .'</i><br />'
1062: .'<a href="/adm/logout">'.&mt('Logout').'</a> '
1063: .'<a href="/adm/coursecatalog?showdom='.$esc_dom.'">'
1064: .&mt('Course/Community Catalog')
1065: .'</a></small></p>');
1066: }
1067: $r->print(&Apache::loncommon::end_page());
1068: return OK;
1069: }
1070:
1071: sub roles_from_env {
1072: my ($roleshash,$update) = @_;
1073: my $count = 0;
1074: if (ref($roleshash) eq 'HASH') {
1075: foreach my $envkey (keys(%env)) {
1076: if ($envkey =~ m{^user\.role\.(\w+)[./]}) {
1077: next if ($1 eq 'gr');
1078: $roleshash->{$envkey} = $env{$envkey};
1079: my ($start,$end) = split(/\./,$env{$envkey});
1080: unless ($end && $end<$update) {
1081: $count ++;
1082: }
1083: }
1084: }
1085: }
1086: return $count;
1087: }
1088:
1089: sub gather_roles {
1090: my ($update,$refresh,$now,$reinit,$nochoose,$roles_in_env,$roletext,$sortrole,$roleclass,$futureroles,
1091: $timezones,$loncaparev) = @_;
1092: my ($countactive,$countfuture,$inrole,$possiblerole) = (0,0,0,'');
1093: my $advanced = $env{'user.adv'};
1094: my $tryagain = $env{'form.tryagain'};
1095: my @ids = &Apache::lonnet::current_machine_ids();
1096: if (ref($roles_in_env) eq 'HASH') {
1097: foreach my $envkey (sort(keys(%{$roles_in_env}))) {
1098: my $button = 1;
1099: my $switchserver='';
1100: my $switchwarning;
1101: my ($role_text,$role_text_end,$sortkey,$role,$where,$trolecode,$tstart,
1102: $tend,$tremark,$tstatus,$tpstart,$tpend);
1103: &Apache::lonnet::role_status($envkey,$update,$refresh,$now,\$role,\$where,
1104: \$trolecode,\$tstatus,\$tstart,\$tend);
1105: next if (!defined($role) || $role eq '' || $role =~ /^gr/);
1106: $tremark='';
1107: $tpstart=' ';
1108: $tpend=' ';
1109: if ($env{'request.role'} eq $trolecode) {
1110: $tstatus='selected';
1111: }
1112: my $tbg;
1113: if (($tstatus eq 'is')
1114: || ($tstatus eq 'selected')
1115: || ($tstatus eq 'future')
1116: || ($env{'form.display'} eq 'showall')) {
1117: my $timezone = &role_timezone($where,$timezones);
1118: if ($tstart) {
1119: $tpstart=&Apache::lonlocal::locallocaltime($tstart,$timezone);
1120: }
1121: if ($tend) {
1122: $tpend=&Apache::lonlocal::locallocaltime($tend,$timezone);
1123: }
1124: if ($tstatus eq 'is') {
1125: $tbg='LC_roles_is';
1126: $possiblerole=$trolecode;
1127: $countactive++;
1128: } elsif ($tstatus eq 'future') {
1129: $tbg='LC_roles_future';
1130: $button=0;
1131: $futureroles->{$trolecode} = $tstart.':'.$tend;
1132: $countfuture ++;
1133: } elsif ($tstatus eq 'expired') {
1134: $tbg='LC_roles_expired';
1135: $button=0;
1136: } elsif ($tstatus eq 'will_not') {
1137: $tbg='LC_roles_will_not';
1138: $tremark.=&mt('Expired after logout.').' ';
1139: } elsif ($tstatus eq 'selected') {
1140: $tbg='LC_roles_selected';
1141: $inrole=1;
1142: $countactive++;
1143: $tremark.=&mt('Currently selected.').' ';
1144: }
1145: my $trole;
1146: if ($role =~ /^cr\//) {
1147: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$role);
1148: if ($tremark) { $tremark.='<br />'; }
1149: $tremark.=&mt('Customrole defined by [_1].',$rauthor.':'.$rdomain);
1150: }
1151: $trole=Apache::lonnet::plaintext($role);
1152: my $ttype;
1153: my $twhere;
1154: my ($tdom,$trest,$tsection)=
1155: split(/\//,Apache::lonnet::declutter($where));
1156: # First, Co-Authorship roles
1157: if (($role eq 'ca') || ($role eq 'aa')) {
1158: my $home = &Apache::lonnet::homeserver($trest,$tdom);
1159: my $allowed=0;
1160: foreach my $id (@ids) { if ($id eq $home) { $allowed=1; } }
1161: if (!$allowed) {
1162: $button=0;
1163: $switchserver='otherserver='.$home.'&role='.$trolecode;
1164: }
1165: #next if ($home eq 'no_host');
1166: $home = &Apache::lonnet::hostname($home);
1167: $ttype='Authoring Space';
1168: $twhere=&mt('User').': '.$trest.'<br />'.&mt('Domain').
1169: ': '.$tdom.'<br />'.
1170: ' '.&mt('Server').': '.$home;
1171: $env{'course.'.$tdom.'_'.$trest.'.description'}='ca';
1172: $tremark.=&Apache::lonhtmlcommon::authorbombs('/res/'.$tdom.'/'.$trest.'/');
1173: $sortkey=$role."$trest:$tdom";
1174: } elsif ($role eq 'au') {
1175: # Authors
1176: my $home = &Apache::lonnet::homeserver
1177: ($env{'user.name'},$env{'user.domain'});
1178: my $allowed=0;
1179: foreach my $id (@ids) { if ($id eq $home) { $allowed=1; } }
1180: if (!$allowed) {
1181: $button=0;
1182: $switchserver='otherserver='.$home.'&role='.$trolecode;
1183: }
1184: #next if ($home eq 'no_host');
1185: $home = &Apache::lonnet::hostname($home);
1186: $ttype='Authoring Space';
1187: $twhere=&mt('Domain').': '.$tdom.'<br />'.&mt('Server').
1188: ': '.$home;
1189: $env{'course.'.$tdom.'_'.$trest.'.description'}='ca';
1190: $tremark.=&Apache::lonhtmlcommon::authorbombs('/res/'.$tdom.'/'.$env{'user.name'}.'/');
1191: $sortkey=$role;
1192: } elsif ($trest) {
1193: my $tcourseid=$tdom.'_'.$trest;
1194: $ttype = &Apache::loncommon::course_type($tcourseid);
1195: $trole = &Apache::lonnet::plaintext($role,$ttype,$tcourseid);
1196: if ($env{'course.'.$tcourseid.'.description'}) {
1197: my $home=$env{'course.'.$tcourseid.'.home'};
1198: $twhere=$env{'course.'.$tcourseid.'.description'};
1199: $sortkey=$role."\0".$tdom."\0".$twhere."\0".$envkey;
1200: $twhere = &HTML::Entities::encode($twhere,'"<>&');
1201: unless ($twhere eq &mt('Currently not available')) {
1202: $twhere.=' <span class="LC_fontsize_small">'.
1203: &Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$trest,$tdom).
1204: '</span>';
1205: unless ($home && grep(/^\Q$home\E$/,@ids) && $loncaparev eq '') {
1206: my $required = $env{'course.'.$tcourseid.'.internal.releaserequired'};
1207: if ($required ne '') {
1208: ($switchserver,$switchwarning) =
1209: &check_release_required($loncaparev,$tcourseid,$trolecode,$required);
1210: if ($switchserver || $switchwarning) {
1211: $button = 0;
1212: }
1213: }
1214: }
1215: }
1216: } else {
1217: my %newhash=&Apache::lonnet::coursedescription($tcourseid);
1218: if (%newhash) {
1219: $sortkey=$role."\0".$tdom."\0".$newhash{'description'}.
1220: "\0".$envkey;
1221: $twhere=&HTML::Entities::encode($newhash{'description'},'"<>&').
1222: ' <span class="LC_fontsize_small">'.
1223: &Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$trest,$tdom).
1224: '</span>';
1225: $ttype = $newhash{'type'};
1226: $trole = &Apache::lonnet::plaintext($role,$ttype,$tcourseid);
1227: my $home = $newhash{'home'};
1228: unless ($home && grep(/^\Q$home\E$/,@ids) && $loncaparev eq '') {
1229: my $required = $newhash{'internal.releaserequired'};
1230: if ($required ne '') {
1231: ($switchserver,$switchwarning) =
1232: &check_release_required($loncaparev,$tcourseid,$trolecode,$required);
1233: if ($switchserver || $switchwarning) {
1234: $button = 0;
1235: }
1236: }
1237: }
1238: } else {
1239: $twhere=&mt('Currently not available');
1240: $env{'course.'.$tcourseid.'.description'}=$twhere;
1241: $sortkey=$role."\0".$tdom."\0".$twhere."\0".$envkey;
1242: $ttype = 'Unavailable';
1243: }
1244: }
1245: if ($tsection) {
1246: $twhere.='<br />'.&mt('Section').': '.$tsection;
1247: }
1248: if ($role ne 'st') { $twhere.="<br />".&mt('Domain').":".$tdom; }
1249: } elsif ($tdom) {
1250: $ttype='Domain';
1251: $twhere=$tdom;
1252: $sortkey=$role.$twhere;
1253: } else {
1254: $ttype='System';
1255: $twhere=&mt('system wide');
1256: $sortkey=$role.$twhere;
1257: }
1258: ($role_text,$role_text_end) =
1259: &build_roletext($trolecode,$tdom,$trest,$tstatus,$tryagain,
1260: $advanced,$tremark,$tbg,$trole,$twhere,$tpstart,
1261: $tpend,$nochoose,$button,$switchserver,$reinit,$switchwarning);
1262: $roletext->{$envkey}=[$role_text,$role_text_end];
1263: if (!$sortkey) {$sortkey=$twhere."\0".$envkey;}
1264: $sortrole->{$sortkey}=$envkey;
1265: $roleclass->{$envkey}=$ttype;
1266: }
1267: }
1268: }
1269: return ($countactive,$countfuture,$inrole,$possiblerole);
1270: }
1271:
1272: sub role_timezone {
1273: my ($where,$timezones) = @_;
1274: my $timezone;
1275: if (ref($timezones) eq 'HASH') {
1276: if ($where =~ m{^/($match_domain)/($match_courseid)}) {
1277: my $cdom = $1;
1278: my $cnum = $2;
1279: if ($cdom && $cnum) {
1280: if (!exists($timezones->{$cdom.'_'.$cnum})) {
1281: my $tz;
1282: if ($env{'course.'.$cdom.'_'.$cnum.'.description'}) {
1283: $tz = $env{'course.'.$cdom.'_'.$cnum.'.timezone'};
1284: } else {
1285: my %timehash =
1286: &Apache::lonnet::get('environment',['timezone'],$cdom,$cnum);
1287: $tz = $timehash{'timezone'};
1288: }
1289: if ($tz eq '') {
1290: if (!exists($timezones->{$cdom})) {
1291: my %domdefaults =
1292: &Apache::lonnet::get_domain_defaults($cdom);
1293: if ($domdefaults{'timezone_def'} eq '') {
1294: $timezones->{$cdom} = 'local';
1295: } else {
1296: $timezones->{$cdom} = $domdefaults{'timezone_def'};
1297: }
1298: }
1299: $timezones->{$cdom.'_'.$cnum} = $timezones->{$cdom};
1300: } else {
1301: $timezones->{$cdom.'_'.$cnum} =
1302: &Apache::lonlocal::gettimezone($tz);
1303: }
1304: }
1305: $timezone = $timezones->{$cdom.'_'.$cnum};
1306: }
1307: } else {
1308: my ($tdom) = ($where =~ m{^/($match_domain)});
1309: if ($tdom) {
1310: if (!exists($timezones->{$tdom})) {
1311: my %domdefaults = &Apache::lonnet::get_domain_defaults($tdom);
1312: if ($domdefaults{'timezone_def'} eq '') {
1313: $timezones->{$tdom} = 'local';
1314: } else {
1315: $timezones->{$tdom} = $domdefaults{'timezone_def'};
1316: }
1317: }
1318: $timezone = $timezones->{$tdom};
1319: }
1320: }
1321: if ($timezone eq 'local') {
1322: $timezone = undef;
1323: }
1324: }
1325: return $timezone;
1326: }
1327:
1328: sub roletable_headers {
1329: my ($r,$roleclass,$sortrole,$nochoose) = @_;
1330: my $doheaders;
1331: if ((ref($sortrole) eq 'HASH') && (ref($roleclass) eq 'HASH')) {
1332: $r->print('<br />'
1333: .&Apache::loncommon::start_data_table()
1334: .&Apache::loncommon::start_data_table_header_row()
1335: );
1336: if (!$nochoose) { $r->print('<th> </th>'); }
1337: $r->print('<th>'.&mt('User Role').'</th>'
1338: .'<th>'.&mt('Extent').'</th>'
1339: .'<th>'.&mt('Start').'</th>'
1340: .'<th>'.&mt('End').'</th>'
1341: .&Apache::loncommon::end_data_table_header_row()
1342: );
1343: $doheaders=-1;
1344: my @roletypes = &roletypes();
1345: foreach my $type (@roletypes) {
1346: my $haverole=0;
1347: foreach my $which (sort {uc($a) cmp uc($b)} (keys(%{$sortrole}))) {
1348: if ($roleclass->{$sortrole->{$which}} =~ /^\Q$type\E/) {
1349: $haverole=1;
1350: }
1351: }
1352: if ($haverole) { $doheaders++; }
1353: }
1354: }
1355: return $doheaders;
1356: }
1357:
1358: sub roletypes {
1359: my @types = ('Domain','Authoring Space','Course','Community','Unavailable','System');
1360: return @types;
1361: }
1362:
1363: sub print_rolerows {
1364: my ($r,$doheaders,$roleclass,$sortrole,$dcroles,$roletext) = @_;
1365: if ((ref($roleclass) eq 'HASH') && (ref($sortrole) eq 'HASH')) {
1366: my @types = &roletypes();
1367: foreach my $type (@types) {
1368: my $output;
1369: foreach my $which (sort {uc($a) cmp uc($b)} (keys(%{$sortrole}))) {
1370: if ($roleclass->{$sortrole->{$which}} =~ /^\Q$type\E/) {
1371: if (ref($roletext) eq 'HASH') {
1372: if (ref($roletext->{$sortrole->{$which}}) eq 'ARRAY') {
1373: $output.= &Apache::loncommon::start_data_table_row().
1374: $roletext->{$sortrole->{$which}}->[0].
1375: &Apache::loncommon::end_data_table_row();
1376: if ($roletext->{$sortrole->{$which}}->[1] ne '') {
1377: $output .= &Apache::loncommon::continue_data_table_row().
1378: $roletext->{$sortrole->{$which}}->[1].
1379: &Apache::loncommon::end_data_table_row();
1380: }
1381: }
1382: if ($sortrole->{$which} =~ m-dc\./($match_domain)/-) {
1383: if (ref($dcroles) eq 'HASH') {
1384: if ($dcroles->{$1}) {
1385: $output .= &adhoc_roles_row($1,'');
1386: }
1387: }
1388: }
1389: }
1390: }
1391: }
1392: if ($output) {
1393: if ($doheaders > 0) {
1394: $r->print(&Apache::loncommon::start_data_table_empty_row()
1395: .'<td align="center" colspan="5">'
1396: .&mt($type)
1397: .'</td>'
1398: .&Apache::loncommon::end_data_table_empty_row()
1399: );
1400: }
1401: $r->print($output);
1402: }
1403: }
1404: }
1405: }
1406:
1407: sub findcourse_advice {
1408: my ($r) = @_;
1409: my $domdesc = &Apache::lonnet::domain($env{'user.domain'},'description');
1410: my $esc_dom = &HTML::Entities::encode($env{'user.domain'},'"<>&');
1411: if (&Apache::lonnet::auto_run(undef,$env{'user.domain'})) {
1412: $r->print(&mt('If you were expecting to see an active role listed for a particular course in the [_1] domain, it may be missing for one of the following reasons:',$domdesc).'
1413: <ul>
1414: <li>'.&mt('The course has yet to be created.').'</li>
1415: <li>'.&mt('Automatic enrollment of registered students has not been enabled for the course.').'</li>
1416: <li>'.&mt('You are in a section of course for which automatic enrollment in the corresponding LON-CAPA course is not active.').'</li>
1417: <li>'.&mt('The start date for automated enrollment has yet to be reached.').'</li>
1418: <li>'.&mt('You registered for the course recently and there is a time lag between the time you register, and the time this information becomes available for the update of LON-CAPA course rosters.').'</li>
1419: </ul>');
1420: } else {
1421: $r->print(&mt('If you were expecting to see an active role listed for a particular course, that course may not have been created yet.').'<br />');
1422: }
1423: $r->print('<h3>'.&mt('Self-Enrollment').'</h3>'.
1424: '<p>'.&mt('The [_1]Course/Community Catalog[_2] provides information about all [_3] classes for which LON-CAPA courses have been created, as well as any communities in the domain.','<a href="/adm/coursecatalog?showdom='.$esc_dom.'">','</a>',$domdesc).'<br />');
1425: $r->print(&mt('You can search for courses and communities which permit self-enrollment, if you would like to enroll in one.').'</p>'.
1426: &Apache::loncoursequeueadmin::queued_selfenrollment());
1427: return;
1428: }
1429:
1430: sub requestcourse_advice {
1431: my ($r) = @_;
1432: my $domdesc = &Apache::lonnet::domain($env{'user.domain'},'description');
1433: my $esc_dom = &HTML::Entities::encode($env{'user.domain'},'"<>&');
1434: my (%can_request,%request_doms);
1435: &Apache::lonnet::check_can_request($env{'user.domain'},\%can_request,\%request_doms);
1436: if (keys(%request_doms) > 0) {
1437: my ($types,$typename) = &Apache::loncommon::course_types();
1438: if ((ref($types) eq 'ARRAY') && (ref($typename) eq 'HASH')) {
1439: $r->print('<h3>'.&mt('Request creation of a course or community').'</h3>'.
1440: '<p>'.&mt('You have rights to request the creation of courses and/or communities in the following domain(s):').'<ul>');
1441: my (@reqdoms,@reqtypes);
1442: foreach my $type (sort(keys(%request_doms))) {
1443: push(@reqtypes,$type);
1444: if (ref($request_doms{$type}) eq 'ARRAY') {
1445: my $domstr = join(', ',map { &Apache::lonnet::domain($_) } sort(@{$request_doms{$type}}));
1446: $r->print(
1447: '<li>'
1448: .&mt('[_1]'.$typename->{$type}.'[_2] in domain: [_3]',
1449: '<i>',
1450: '</i>',
1451: '<b>'.$domstr.'</b>')
1452: .'</li>'
1453: );
1454: foreach my $dom (@{$request_doms{$type}}) {
1455: unless (grep(/^\Q$dom\E/,@reqdoms)) {
1456: push(@reqdoms,$dom);
1457: }
1458: }
1459: }
1460: }
1461: my @showtypes;
1462: foreach my $type (@{$types}) {
1463: if (grep(/^\Q$type\E$/,@reqtypes)) {
1464: push(@showtypes,$type);
1465: }
1466: }
1467: my $requrl = '/adm/requestcourse';
1468: if (@reqdoms == 1) {
1469: $requrl .= '?showdom='.$reqdoms[0];
1470: }
1471: if (@showtypes > 0) {
1472: $requrl.=(($requrl=~/\?/)?'&':'?').'crstype='.$showtypes[0];
1473: }
1474: if (@reqdoms == 1 || @showtypes > 0) {
1475: $requrl .= '&state=crstype&action=new';
1476: }
1477: $r->print('</ul>'.&mt('Use the [_1]request form[_2] to submit a request for creation of a new course or community.','<a href="'.$requrl.'">','</a>').'</p>');
1478: }
1479: }
1480: return;
1481: }
1482:
1483: sub privileges_info {
1484: my ($which) = @_;
1485: my $output;
1486:
1487: $which ||= $env{'request.role'};
1488:
1489: foreach my $envkey (sort(keys(%env))) {
1490: next if ($envkey!~/^user\.priv\.\Q$which\E\.(.*)/);
1491:
1492: my $where=$1;
1493: my $ttype;
1494: my $twhere;
1495: my (undef,$tdom,$trest,$tsec)=split(m{/},$where);
1496: if ($trest) {
1497: if ($env{'course.'.$tdom.'_'.$trest.'.description'} eq 'ca') {
1498: $ttype='Authoring Space';
1499: $twhere='User: '.$trest.', Domain: '.$tdom;
1500: } else {
1501: $ttype= &Apache::loncommon::course_type($tdom.'_'.$trest);
1502: $twhere=$env{'course.'.$tdom.'_'.$trest.'.description'};
1503: if ($tsec) {
1504: my $sec_type = 'Section';
1505: if (exists($env{"user.role.gr.$where"})) {
1506: $sec_type = 'Group';
1507: }
1508: $twhere.=' ('.$sec_type.': '.$tsec.')';
1509: }
1510: }
1511: } elsif ($tdom) {
1512: $ttype='Domain';
1513: $twhere=$tdom;
1514: } else {
1515: $ttype='System';
1516: $twhere='/';
1517: }
1518: $output .= "\n<h3>".&mt($ttype).': '.$twhere.'</h3>'."\n<ul>";
1519: foreach my $priv (sort(split(/:/,$env{$envkey}))) {
1520: next if (!$priv);
1521:
1522: my ($prv,$restr)=split(/\&/,$priv);
1523: my $trestr='';
1524: if ($restr ne 'F') {
1525: $trestr.=' ('.
1526: join(', ',
1527: map { &Apache::lonnet::plaintext($_) }
1528: (split('',$restr))).') ';
1529: }
1530: $output .= "\n\t".
1531: '<li>'.&Apache::lonnet::plaintext($prv).$trestr.'</li>';
1532: }
1533: $output .= "\n".'</ul>';
1534: }
1535: return $output;
1536: }
1537:
1538: sub build_roletext {
1539: my ($trolecode,$tdom,$trest,$tstatus,$tryagain,$advanced,$tremark,$tbg,$trole,$twhere,$tpstart,$tpend,$nochoose,$button,$switchserver,$reinit,$switchwarning) = @_;
1540: my ($roletext,$roletext_end);
1541: my $is_dc=($trolecode =~ m/^dc\./);
1542: my $rowspan=($is_dc) ? ''
1543: : ' rowspan="2" ';
1544:
1545: unless ($nochoose) {
1546: my $buttonname=$trolecode;
1547: $buttonname=~s/\W//g;
1548: if (!$button) {
1549: if ($switchserver) {
1550: $roletext.='<td'.$rowspan.' class="'.$tbg.'">'
1551: .'<a href="/adm/switchserver?'.$switchserver.'">'
1552: .&mt('Switch Server')
1553: .'</a></td>';
1554: } else {
1555: $roletext.=('<td'.$rowspan.' class="'.$tbg.'"> </td>');
1556: }
1557: if ($switchwarning) {
1558: if ($tremark eq '') {
1559: $tremark = $switchwarning;
1560: } else {
1561: $tremark .= '<br />'.$switchwarning;
1562: }
1563: }
1564: } elsif ($tstatus eq 'is') {
1565: $roletext.='<td'.$rowspan.' class="'.$tbg.'">'.
1566: '<input name="'.$buttonname.'" type="button" value="'.
1567: &mt('Select').'" onclick="javascript:enterrole(this.form,\''.
1568: $trolecode."','".$buttonname.'\');" /></td>';
1569: } elsif ($tryagain) {
1570: $roletext.=
1571: '<td'.$rowspan.' class="'.$tbg.'">'.
1572: '<input name="'.$buttonname.'" type="button" value="'.
1573: &mt('Try Selecting Again').'" onclick="javascript:enterrole(this.form,\''.
1574: $trolecode."','".$buttonname.'\');" /></td>';
1575: } elsif ($advanced) {
1576: $roletext.=
1577: '<td'.$rowspan.' class="'.$tbg.'">'.
1578: '<input name="'.$buttonname.'" type="button" value="'.
1579: &mt('Re-Initialize').'" onclick="javascript:enterrole(this.form,\''.
1580: $trolecode."','".$buttonname.'\');" /></td>';
1581: } elsif ($reinit) {
1582: $roletext.=
1583: '<td'.$rowspan.' class="'.$tbg.'">'.
1584: '<input name="'.$buttonname.'" type="button" value="'.
1585: &mt('Re-Select').'" onclick="javascript:enterrole(this.form,\''.
1586: $trolecode."','".$buttonname.'\');" /></td>';
1587: } else {
1588: $roletext.=
1589: '<td'.$rowspan.' class="'.$tbg.'">'.
1590: '<input name="'.$buttonname.'" type="button" value="'.
1591: &mt('Re-Select').'" onclick="javascript:enterrole(this.form,\''.
1592: $trolecode."','".$buttonname.'\');" /></td>';
1593: }
1594: }
1595: if ($trolecode !~ m/^(dc|ca|au|aa)\./) {
1596: $tremark.=&Apache::lonannounce::showday(time,1,
1597: &Apache::lonannounce::readcalendar($tdom.'_'.$trest));
1598: }
1599: $roletext.='<td>'.$trole.'</td>'
1600: .'<td>'.$twhere.'</td>'
1601: .'<td>'.$tpstart.'</td>'
1602: .'<td>'.$tpend.'</td>';
1603: if (!$is_dc) {
1604: $roletext_end = '<td colspan="4">'.
1605: $tremark.' '.
1606: '</td>';
1607: }
1608: return ($roletext,$roletext_end);
1609: }
1610:
1611: sub check_needs_switchserver {
1612: my ($possiblerole) = @_;
1613: my $needs_switchserver;
1614: my ($role,$where) = split(/\./,$possiblerole,2);
1615: my (undef,$tdom,$twho) = split(/\//,$where);
1616: my ($server_status,$home);
1617: if (($role eq 'ca') || ($role eq 'aa')) {
1618: ($server_status,$home) = &check_author_homeserver($twho,$tdom);
1619: } else {
1620: ($server_status,$home) = &check_author_homeserver($env{'user.name'},
1621: $env{'user.domain'});
1622: }
1623: if ($server_status eq 'switchserver') {
1624: $needs_switchserver = 1;
1625: }
1626: return $needs_switchserver;
1627: }
1628:
1629: sub check_author_homeserver {
1630: my ($uname,$udom)=@_;
1631: if (($uname eq '') || ($udom eq '')) {
1632: return ('fail','');
1633: }
1634: my $home = &Apache::lonnet::homeserver($uname,$udom);
1635: if (&Apache::lonnet::host_domain($home) ne $udom) {
1636: return ('fail',$home);
1637: }
1638: my @ids=&Apache::lonnet::current_machine_ids();
1639: if (grep(/^\Q$home\E$/,@ids)) {
1640: return ('ok',$home);
1641: } else {
1642: return ('switchserver',$home);
1643: }
1644: }
1645:
1646: sub check_fordc {
1647: my ($dcroles,$update,$then) = @_;
1648: my $numdc = 0;
1649: if ($env{'user.adv'}) {
1650: foreach my $envkey (sort keys %env) {
1651: if ($envkey=~/^user\.role\.dc\.\/($match_domain)\/$/) {
1652: my $dcdom = $1;
1653: my $livedc = 1;
1654: my ($tstart,$tend)=split(/\./,$env{$envkey});
1655: my $limit = $update;
1656: if ($env{'request.role'} eq 'dc./'.$dcdom.'/') {
1657: $limit = $then;
1658: }
1659: if ($tstart && $tstart>$limit) { $livedc = 0; }
1660: if ($tend && $tend <$limit) { $livedc = 0; }
1661: if ($livedc) {
1662: $$dcroles{$dcdom} = $envkey;
1663: $numdc++;
1664: }
1665: }
1666: }
1667: }
1668: return $numdc;
1669: }
1670:
1671: sub adhoc_course_role {
1672: my ($refresh,$update,$then) = @_;
1673: my ($cdom,$cnum,$crstype);
1674: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
1675: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
1676: $crstype = &Apache::loncommon::course_type();
1677: if (&check_forcc($cdom,$cnum,$refresh,$update,$then,$crstype)) {
1678: my $setprivs;
1679: if (!defined($env{'user.role.'.$env{'form.switchrole'}})) {
1680: $setprivs = 1;
1681: } else {
1682: my ($start,$end) = split(/\./,$env{'user.role.'.$env{'form.switchrole'}});
1683: if (($start && ($start>$refresh || $start == -1)) ||
1684: ($end && $end<$update)) {
1685: $setprivs = 1;
1686: }
1687: }
1688: unless ($setprivs) {
1689: if (!exists($env{'user.priv.'.$env{'form.switchrole'}.'./'})) {
1690: $setprivs = 1;
1691: }
1692: }
1693: if ($setprivs) {
1694: if ($env{'form.switchrole'} =~ m-^(in|ta|ep|ad|st|cr)([\w/]*)\./\Q$cdom\E/\Q$cnum\E/?(\w*)$-) {
1695: my $role = $1;
1696: my $custom_role = $2;
1697: my $usec = $3;
1698: if ($role eq 'cr') {
1699: if ($custom_role =~ m-^/$match_domain/$match_username/\w+$-) {
1700: $role .= $custom_role;
1701: } else {
1702: return;
1703: }
1704: }
1705: my (%userroles,%newrole,%newgroups,%group_privs);
1706: my %cgroups =
1707: &Apache::lonnet::get_active_groups($env{'user.domain'},
1708: $env{'user.name'},$cdom,$cnum);
1709: foreach my $group (keys(%cgroups)) {
1710: $group_privs{$group} =
1711: $env{'user.priv.cc./'.$cdom.'/'.$cnum.'./'.$cdom.'/'.$cnum.'/'.$group};
1712: }
1713: $newgroups{'/'.$cdom.'/'.$cnum} = \%group_privs;
1714: my $area = '/'.$cdom.'/'.$cnum;
1715: my $spec = $role.'.'.$area;
1716: if ($usec ne '') {
1717: $spec .= '/'.$usec;
1718: $area .= '/'.$usec;
1719: }
1720: if ($role =~ /^cr/) {
1721: &Apache::lonnet::custom_roleprivs(\%newrole,$role,$cdom,$cnum,$spec,$area);
1722: } else {
1723: &Apache::lonnet::standard_roleprivs(\%newrole,$role,$cdom,$spec,$cnum,$area);
1724: }
1725: &Apache::lonnet::set_userprivs(\%userroles,\%newrole,\%newgroups);
1726: my $adhocstart = $refresh-1;
1727: $userroles{'user.role.'.$spec} = $adhocstart.'.';
1728: &Apache::lonnet::appenv(\%userroles,[$role,'cm']);
1729: }
1730: }
1731: }
1732: return;
1733: }
1734:
1735: sub check_forcc {
1736: my ($cdom,$cnum,$refresh,$update,$then,$crstype) = @_;
1737: my ($is_cc,$ccrole);
1738: if ($crstype eq 'Community') {
1739: $ccrole = 'co';
1740: } else {
1741: $ccrole = 'cc';
1742: }
1743: if (&Apache::lonnet::is_course($cdom,$cnum)) {
1744: my $envkey = 'user.role.'.$ccrole.'./'.$cdom.'/'.$cnum;
1745: if (defined($env{$envkey})) {
1746: $is_cc = 1;
1747: my ($tstart,$tend)=split(/\./,$env{$envkey});
1748: my $limit = $update;
1749: if ($env{'request.role'} eq $ccrole.'./'.$cdom.'/'.$cnum) {
1750: $limit = $then;
1751: }
1752: if ($tstart && $tstart>$refresh) { $is_cc = 0; }
1753: if ($tend && $tend <$limit) { $is_cc = 0; }
1754: }
1755: }
1756: return $is_cc;
1757: }
1758:
1759: sub check_release_required {
1760: my ($loncaparev,$tcourseid,$trolecode,$required) = @_;
1761: my ($switchserver,$warning);
1762: if ($required ne '') {
1763: my ($reqdmajor,$reqdminor) = ($required =~ /^(\d+)\.(\d+)$/);
1764: my ($major,$minor) = ($loncaparev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
1765: if ($reqdmajor ne '' && $reqdminor ne '') {
1766: my $otherserver;
1767: if (($major eq '' && $minor eq '') ||
1768: (($reqdmajor > $major) || (($reqdmajor == $major) && ($reqdminor > $minor)))) {
1769: my ($userdomserver) = &Apache::lonnet::choose_server($env{'user.domain'});
1770: my $switchlcrev =
1771: &Apache::lonnet::get_server_loncaparev($env{'user.domain'},
1772: $userdomserver);
1773: my ($swmajor,$swminor) = ($switchlcrev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
1774: if (($swmajor eq '' && $swminor eq '') || ($reqdmajor > $swmajor) ||
1775: (($reqdmajor == $swmajor) && ($reqdminor > $swminor))) {
1776: my $cdom = $env{'course.'.$tcourseid.'.domain'};
1777: if ($cdom ne $env{'user.domain'}) {
1778: my ($coursedomserver,$coursehostname) = &Apache::lonnet::choose_server($cdom);
1779: my $serverhomeID = &Apache::lonnet::get_server_homeID($coursehostname);
1780: my $serverhomedom = &Apache::lonnet::host_domain($serverhomeID);
1781: my %defdomdefaults = &Apache::lonnet::get_domain_defaults($serverhomedom);
1782: my %udomdefaults = &Apache::lonnet::get_domain_defaults($env{'user.domain'});
1783: my $remoterev = &Apache::lonnet::get_server_loncaparev($serverhomedom,$coursedomserver);
1784: my $canhost =
1785: &Apache::lonnet::can_host_session($env{'user.domain'},
1786: $coursedomserver,
1787: $remoterev,
1788: $udomdefaults{'remotesessions'},
1789: $defdomdefaults{'hostedsessions'});
1790:
1791: if ($canhost) {
1792: $otherserver = $coursedomserver;
1793: } else {
1794: $warning = &mt('Requires LON-CAPA version [_1].',$env{'course.'.$tcourseid.'.internal.releaserequired'}).'<br />'. &mt("No suitable server could be found amongst servers in either your own domain or in the course's domain.");
1795: }
1796: } else {
1797: $warning = &mt('Requires LON-CAPA version [_1].',$env{'course.'.$tcourseid.'.internal.releaserequired'}).'<br />'.&mt("No suitable server could be found amongst servers in your own domain (which is also the course's domain).");
1798: }
1799: } else {
1800: $otherserver = $userdomserver;
1801: }
1802: }
1803: if ($otherserver ne '') {
1804: $switchserver = 'otherserver='.$otherserver.'&role='.$trolecode;
1805: }
1806: }
1807: }
1808: return ($switchserver,$warning);
1809: }
1810:
1811: sub courselink {
1812: my ($dcdom,$rowtype) = @_;
1813: my $courseform=&Apache::loncommon::selectcourse_link
1814: ('rolechoice','dccourse'.$rowtype.'_'.$dcdom,
1815: 'dcdomain'.$rowtype.'_'.$dcdom,'coursedesc'.$rowtype.'_'.
1816: $dcdom,$dcdom,undef,'Course/Community');
1817: my $hiddenitems = '<input type="hidden" name="dcdomain'.$rowtype.'_'.$dcdom.'" value="'.$dcdom.'" />'.
1818: '<input type="hidden" name="origdom'.$rowtype.'_'.$dcdom.'" value="'.$dcdom.'" />'.
1819: '<input type="hidden" name="dccourse'.$rowtype.'_'.$dcdom.'" value="" />'.
1820: '<input type="hidden" name="coursedesc'.$rowtype.'_'.$dcdom.'" value="" />';
1821: return $courseform.$hiddenitems;
1822: }
1823:
1824: sub coursepick_jscript {
1825: my %lt = &Apache::lonlocal::texthash(
1826: plsu => "Please use the 'Select Course/Community' link to open a separate pick course window where you may select the course or community you wish to enter.",
1827: youc => 'You can only use this screen to select courses and communities in the current domain.',
1828: );
1829: my $verify_script = <<"END";
1830: <script type="text/javascript">
1831: // <![CDATA[
1832: function verifyCoursePick(caller) {
1833: var numbutton = getIndex(caller)
1834: var pickedCourse = document.rolechoice.elements[numbutton+4].value
1835: var pickedDomain = document.rolechoice.elements[numbutton+2].value
1836: if (document.rolechoice.elements[numbutton+2].value == document.rolechoice.elements[numbutton+3].value) {
1837: if (pickedCourse != '') {
1838: if (numbutton != -1) {
1839: var courseTarget = "cc./"+pickedDomain+"/"+pickedCourse
1840: document.rolechoice.elements[numbutton+1].name = courseTarget
1841: document.rolechoice.submit()
1842: }
1843: }
1844: else {
1845: alert("$lt{'plsu'}");
1846: }
1847: }
1848: else {
1849: alert("$lt{'youc'}")
1850: }
1851: }
1852: function getIndex(caller) {
1853: for (var i=0;i<document.rolechoice.elements.length;i++) {
1854: if (document.rolechoice.elements[i] == caller) {
1855: return i;
1856: }
1857: }
1858: return -1;
1859: }
1860: // ]]>
1861: </script>
1862: END
1863: return $verify_script;
1864: }
1865:
1866: sub coauthorlink {
1867: my ($dcdom,$rowtype) = @_;
1868: my $coauthorform=&Apache::loncommon::selectauthor_link('rolechoice',$dcdom);
1869: my $hiddenitems = '<input type="hidden" name="adhoccauname'.$rowtype.'_'.$dcdom.'" value="" />';
1870: return $coauthorform.$hiddenitems;
1871: }
1872:
1873: sub display_cc_role {
1874: my $rolekey = shift;
1875: my ($roletext,$roletext_end);
1876: my $advanced = $env{'user.adv'};
1877: my $tryagain = $env{'form.tryagain'};
1878: unless ($rolekey =~/^error\:/) {
1879: if ($rolekey =~ m{^user\.role\.(cc|co)\./($match_domain)/($match_courseid)$}) {
1880: my $ccrole = $1;
1881: my $tdom = $2;
1882: my $trest = $3;
1883: my $tcourseid = $tdom.'_'.$trest;
1884: my $trolecode = $ccrole.'./'.$tdom.'/'.$trest;
1885: my $twhere;
1886: my $ttype;
1887: my $tbg='LC_roles_is';
1888: my %newhash=&Apache::lonnet::coursedescription($tcourseid);
1889: if (%newhash) {
1890: $twhere=$newhash{'description'}.
1891: ' <span class="LC_fontsize_small">'.
1892: &Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$trest,$tdom).
1893: '</span>';
1894: $ttype = $newhash{'type'};
1895: } else {
1896: $twhere=&mt('Currently not available');
1897: $env{'course.'.$tcourseid.'.description'}=$twhere;
1898: }
1899: my $trole = &Apache::lonnet::plaintext($ccrole,$ttype,$tcourseid);
1900: $twhere.="<br />".&mt('Domain').":".$tdom;
1901: ($roletext,$roletext_end) = &build_roletext($trolecode,$tdom,$trest,'is',$tryagain,$advanced,'',$tbg,$trole,$twhere,'','','',1,'');
1902: }
1903: }
1904: return ($roletext,$roletext_end);
1905: }
1906:
1907: sub adhoc_roles_row {
1908: my ($dcdom,$rowtype) = @_;
1909: my $output = &Apache::loncommon::continue_data_table_row()
1910: .' <td colspan="5">'
1911: .&mt('[_1]Ad hoc[_2] roles in domain [_3] --'
1912: ,'<span class="LC_cusr_emph">','</span>',$dcdom)
1913: .' ';
1914: my $selectcclink = &courselink($dcdom,$rowtype);
1915: my $ccrole = &Apache::lonnet::plaintext('co',undef,undef,1);
1916: my $carole = &Apache::lonnet::plaintext('ca');
1917: my $selectcalink = &coauthorlink($dcdom,$rowtype);
1918: $output.=$ccrole.': '.$selectcclink
1919: .' | '.$carole.': '.$selectcalink.'</td>'
1920: .&Apache::loncommon::end_data_table_row();
1921: return $output;
1922: }
1923:
1924: sub recent_filename {
1925: my $area=shift;
1926: return 'nohist_recent_'.&escape($area);
1927: }
1928:
1929: sub courseloadpage {
1930: my ($courseid) = @_;
1931: my $startpage;
1932: my %entry_settings = &Apache::lonnet::get('nohist_whatsnew',
1933: [$courseid.':courseinit']);
1934: my ($tmp) = %entry_settings;
1935: unless ($tmp =~ /^error: 2 /) {
1936: $startpage = $entry_settings{$courseid.':courseinit'};
1937: }
1938: if ($startpage eq '') {
1939: if (exists($env{'environment.course_init_display'})) {
1940: $startpage = $env{'environment.course_init_display'};
1941: }
1942: }
1943: return $startpage;
1944: }
1945:
1946: sub update_session_roles {
1947: my $then=$env{'user.login.time'};
1948: my $refresh=$env{'user.refresh.time'};
1949: if (!$refresh) {
1950: $refresh = $then;
1951: }
1952: my $update = $env{'user.update.time'};
1953: if (!$update) {
1954: $update = $then;
1955: }
1956: my $now = time;
1957: my %roleshash =
1958: &Apache::lonnet::get_my_roles('','','userroles',
1959: ['active','future','previous'],
1960: undef,undef,1);
1961: my ($msg,@newsec,$oldsec,$currrole_expired,@changed_roles,
1962: %changed_groups,%dbroles,%deletedroles,%allroles,%allgroups,
1963: %userroles,%checkedgroup,%crprivs,$hasgroups,%rolechange,
1964: %groupchange,%newrole,%newgroup,%customprivchg,%groups_roles,
1965: @rolecodes);
1966: my @possroles = ('cr','st','ta','ad','ep','in','co','cc');
1967: my %courseroles;
1968: foreach my $item (keys(%roleshash)) {
1969: my ($uname,$udom,$role,$remainder) = split(/:/,$item,4);
1970: my ($tstart,$tend) = split(/:/,$roleshash{$item});
1971: my ($section,$group,@group_privs);
1972: if ($role =~ m{^gr/(\w*)$}) {
1973: $role = 'gr';
1974: my $priv = $1;
1975: next if ($tstart eq '-1');
1976: if (&curr_role_status($tstart,$tend,$refresh,$now) eq 'active') {
1977: if ($priv ne '') {
1978: push(@group_privs,$priv);
1979: }
1980: }
1981: if ($remainder =~ /:/) {
1982: (my $additional_privs,$group) =
1983: ($remainder =~ /^([\w:]+):([^:]+)$/);
1984: if ($additional_privs ne '') {
1985: if (&curr_role_status($tstart,$tend,$refresh,$now) eq 'active') {
1986: push(@group_privs,split(/:/,$additional_privs));
1987: @group_privs = sort(@group_privs);
1988: }
1989: }
1990: } else {
1991: $group = $remainder;
1992: }
1993: } else {
1994: $section = $remainder;
1995: }
1996: my $where = "/$udom/$uname";
1997: if ($section ne '') {
1998: $where .= "/$section";
1999: } elsif ($group ne '') {
2000: $where .= "/$group";
2001: }
2002: my $rolekey = "$role.$where";
2003: my $envkey = "user.role.$rolekey";
2004: $dbroles{$envkey} = 1;
2005: if (($env{'request.role'} eq $rolekey) && ($role ne 'st')) {
2006: if (&curr_role_status($tstart,$tend,$refresh,$now) ne 'active') {
2007: $currrole_expired = 1;
2008: }
2009: }
2010: if ($env{$envkey} eq '') {
2011: my $status_in_db =
2012: &curr_role_status($tstart,$tend,$now,$now);
2013: &gather_roleprivs(\%allroles,\%allgroups,\%userroles,$where,$role,$tstart,$tend,$status_in_db);
2014: if (($role eq 'st') && ($env{'request.role'} =~ m{^\Q$role\E\.\Q/$udom/$uname\E})) {
2015: if ($status_in_db eq 'active') {
2016: if ($section eq '') {
2017: push(@newsec,'none');
2018: } else {
2019: push(@newsec,$section);
2020: }
2021: }
2022: } else {
2023: unless (grep(/^\Q$role\E$/,@changed_roles)) {
2024: push(@changed_roles,$role);
2025: }
2026: if ($status_in_db ne 'previous') {
2027: if ($role eq 'gr') {
2028: $newgroup{$rolekey} = $status_in_db;
2029: if ($status_in_db eq 'active') {
2030: unless (ref($courseroles{$udom}) eq 'HASH') {
2031: %{$courseroles{$udom}} =
2032: &Apache::lonnet::get_my_roles('','','userroles',
2033: ['active'],\@possroles,
2034: [$udom],1);
2035: }
2036: &Apache::lonnet::get_groups_roles($udom,$uname,
2037: $courseroles{$udom},
2038: \@rolecodes,\%groups_roles);
2039: }
2040: } else {
2041: $newrole{$rolekey} = $status_in_db;
2042: }
2043: }
2044: }
2045: } else {
2046: my ($currstart,$currend) = split(/\./,$env{$envkey});
2047: if ($role eq 'gr') {
2048: if (&curr_role_status($currstart,$currend,$refresh,$update) ne 'previous') {
2049: $hasgroups = 1;
2050: }
2051: }
2052: if (($currstart ne $tstart) || ($currend ne $tend)) {
2053: my $status_in_env =
2054: &curr_role_status($currstart,$currend,$refresh,$update);
2055: my $status_in_db =
2056: &curr_role_status($tstart,$tend,$now,$now);
2057: if ($status_in_env ne $status_in_db) {
2058: if ($status_in_env eq 'active') {
2059: if ($role eq 'st') {
2060: if ($env{'request.role'} eq $rolekey) {
2061: my $switchsection;
2062: unless (ref($courseroles{$udom}) eq 'HASH') {
2063: %{$courseroles{$udom}} =
2064: &Apache::lonnet::get_my_roles('','','userroles',
2065: ['active'],
2066: \@possroles,[$udom],1);
2067: }
2068: foreach my $crsrole (keys(%{$courseroles{$udom}})) {
2069: if ($crsrole =~ /^\Q$uname\E:\Q$udom\E:st/) {
2070: $switchsection = 1;
2071: last;
2072: }
2073: }
2074: if ($switchsection) {
2075: if ($section eq '') {
2076: $oldsec = 'none';
2077: } else {
2078: $oldsec = $section;
2079: }
2080: &gather_roleprivs(\%allroles,\%allgroups,\%userroles,$where,$role,$tstart,$tend,$status_in_db);
2081: } else {
2082: $currrole_expired = 1;
2083: next;
2084: }
2085: }
2086: }
2087: unless ($rolekey eq $env{'request.role'}) {
2088: if ($role eq 'gr') {
2089: &Apache::lonnet::delete_env_groupprivs($where,\%courseroles,\@possroles);
2090: } else {
2091: &Apache::lonnet::delenv("user.priv.$rolekey",undef,[$role]);
2092: &Apache::lonnet::delenv("user.priv.cm.$where",undef,['cm']);
2093: }
2094: &gather_roleprivs(\%allroles,\%allgroups,\%userroles,$where,$role,$tstart,$tend,$status_in_db);
2095: }
2096: } elsif ($status_in_db eq 'active') {
2097: if (($role eq 'st') &&
2098: ($env{'request.role'} =~ m{^\Q$role\E\.\Q/$udom/$uname\E})) {
2099: if ($section eq '') {
2100: push(@newsec,'none');
2101: } else {
2102: push(@newsec,$section);
2103: }
2104: } elsif ($role eq 'gr') {
2105: unless (ref($courseroles{$udom}) eq 'HASH') {
2106: %{$courseroles{$udom}} =
2107: &Apache::lonnet::get_my_roles('','','userroles',
2108: ['active'],
2109: \@possroles,[$udom],1);
2110: }
2111: &Apache::lonnet::get_groups_roles($udom,$uname,
2112: $courseroles{$udom},
2113: \@rolecodes,\%groups_roles);
2114: }
2115: &gather_roleprivs(\%allroles,\%allgroups,\%userroles,$where,$role,$tstart,$tend,$status_in_db);
2116: }
2117: unless (grep(/^\Q$role\E$/,@changed_roles)) {
2118: push(@changed_roles,$role);
2119: }
2120: if ($role eq 'gr') {
2121: $groupchange{"/$udom/$uname"}{$group} = $status_in_db;
2122: } else {
2123: $rolechange{$rolekey} = $status_in_db;
2124: }
2125: }
2126: } else {
2127: if ($role eq 'gr') {
2128: unless ($checkedgroup{$where}) {
2129: my $status_in_db =
2130: &curr_role_status($tstart,$tend,$refresh,$now);
2131: if ($tstart eq '-1') {
2132: $status_in_db = 'deleted';
2133: }
2134: unless (ref($courseroles{$udom}) eq 'HASH') {
2135: %{$courseroles{$udom}} =
2136: &Apache::lonnet::get_my_roles('','','userroles',
2137: ['active'],
2138: \@possroles,[$udom],1);
2139: }
2140: if (ref($courseroles{$udom}) eq 'HASH') {
2141: foreach my $item (keys(%{$courseroles{$udom}})) {
2142: next unless ($item =~ /^\Q$uname\E/);
2143: my ($cnum,$cdom,$crsrole,$crssec) = split(/:/,$item);
2144: my $area = '/'.$cdom.'/'.$cnum;
2145: if ($crssec ne '') {
2146: $area .= '/'.$crssec;
2147: }
2148: my $crsrolekey = $crsrole.'.'.$area;
2149: my $currprivs = $env{'user.priv.'.$crsrole.'.'.$area.'.'.$where};
2150: $currprivs =~ s/^://;
2151: $currprivs =~ s/\&F$//;
2152: my @curr_grp_privs = split(/\&F:/,$currprivs);
2153: @curr_grp_privs = sort(@curr_grp_privs);
2154: my @diffs;
2155: if (@group_privs > 0 || @curr_grp_privs > 0) {
2156: @diffs = &Apache::loncommon::compare_arrays(\@group_privs,\@curr_grp_privs);
2157: }
2158: if (@diffs == 0) {
2159: last;
2160: } else {
2161: unless(grep(/^\Qgr\E$/,@rolecodes)) {
2162: push(@rolecodes,'gr');
2163: }
2164: &gather_roleprivs(\%allroles,\%allgroups,
2165: \%userroles,$where,$role,
2166: $tstart,$tend,$status_in_db);
2167: if ($status_in_db eq 'active') {
2168: &Apache::lonnet::get_groups_roles($udom,$uname,
2169: $courseroles{$udom},
2170: \@rolecodes,\%groups_roles);
2171: }
2172: $changed_groups{$udom.'_'.$uname}{$group} = $status_in_db;
2173: last;
2174: }
2175: }
2176: }
2177: $checkedgroup{$where} = 1;
2178: }
2179: } elsif ($role =~ /^cr/) {
2180: my $status_in_db =
2181: &curr_role_status($tstart,$tend,$refresh,$now);
2182: my ($rdummy,$rest) = split(/\//,$role,2);
2183: my %currpriv;
2184: unless (exists($crprivs{$rest})) {
2185: my ($rdomain,$rauthor,$rrole)=split(/\//,$rest);
2186: my $homsvr=&Apache::lonnet::homeserver($rauthor,$rdomain);
2187: if (&Apache::lonnet::hostname($homsvr) ne '') {
2188: my ($rdummy,$roledef)=
2189: &Apache::lonnet::get('roles',["rolesdef_$rrole"],
2190: $rdomain,$rauthor);
2191: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
2192: my $i = 0;
2193: my @scopes = ('sys','dom','crs');
2194: my @privs = split(/\_/,$roledef);
2195: foreach my $priv (@privs) {
2196: my ($blank,@prv) = split(/:/,$priv);
2197: @prv = map { $_ .= (/\&\w+$/ ? '':'&F') } @prv;
2198: if (@prv) {
2199: $priv = ':'.join(':',sort(@prv));
2200: }
2201: $crprivs{$rest}{$scopes[$i]} = $priv;
2202: $i++;
2203: }
2204: }
2205: }
2206: }
2207: my $status_in_env =
2208: &curr_role_status($currstart,$currend,$refresh,$update);
2209: if ($status_in_env eq 'active') {
2210: $currpriv{sys} = $env{"user.priv.$rolekey./"};
2211: $currpriv{dom} = $env{"user.priv.$rolekey./$udom/"};
2212: $currpriv{crs} = $env{"user.priv.$rolekey.$where"};
2213: if (keys(%crprivs)) {
2214: if (($crprivs{$rest}{sys} ne $currpriv{sys}) ||
2215: ($crprivs{$rest}{dom} ne $currpriv{dom})
2216: ||
2217: ($crprivs{$rest}{crs} ne $currpriv{crs})) {
2218: &gather_roleprivs(\%allroles,\%allgroups,
2219: \%userroles,$where,$role,
2220: $tstart,$tend,$status_in_db);
2221: unless (grep(/^\Q$role\E$/,@changed_roles)) {
2222: push(@changed_roles,$role);
2223: }
2224: $customprivchg{$rolekey} = $status_in_env;
2225: }
2226: }
2227: }
2228: }
2229: }
2230: }
2231: }
2232: foreach my $envkey (keys(%env)) {
2233: next unless ($envkey =~ /^user\.role\./);
2234: next if ($dbroles{$envkey});
2235: next if ($envkey eq 'user.role.'.$env{'request.role'});
2236: my ($currstart,$currend) = split(/\./,$env{$envkey});
2237: my $status_in_env =
2238: &curr_role_status($currstart,$currend,$refresh,$update);
2239: my ($rolekey) = ($envkey =~ /^user\.role\.(.+)$/);
2240: my ($role,$rest)=split(/\./,$rolekey,2);
2241: if (&Apache::lonnet::delenv($envkey,undef,[$role])) {
2242: if ($status_in_env eq 'active') {
2243: if ($role eq 'gr') {
2244: &Apache::lonnet::delete_env_groupprivs($rest,\%courseroles,
2245: \@possroles);
2246: } else {
2247: &Apache::lonnet::delenv("user.priv.$rolekey",undef,[$role]);
2248: &Apache::lonnet::delenv("user.priv.cm.$rest",undef,['cm']);
2249: }
2250: unless (grep(/^\Q$role\E$/,@changed_roles)) {
2251: push(@changed_roles,$role);
2252: }
2253: $deletedroles{$rolekey} = 1;
2254: }
2255: }
2256: }
2257: if (($oldsec) && (@newsec > 0)) {
2258: if (@newsec > 1) {
2259: $msg = '<p class="LC_warning">'.&mt('The section has changed for your current role. Log-out and log-in again to select a role for the new section.').'</p>';
2260: } else {
2261: my $newrole = $env{'request.role'};
2262: if ($newsec[0] eq 'none') {
2263: $newrole =~ s{(/[^/])$}{};
2264: } elsif ($oldsec eq 'none') {
2265: $newrole .= '/'.$newsec[0];
2266: } else {
2267: $newrole =~ s{([^/]+)$}{$newsec[0]};
2268: }
2269: my $coursedesc = $env{'course.'.$env{'request.course.id'}.'.description'};
2270: my ($curr_role) = ($env{'request.role'} =~ m{^(\w+)\./$match_domain/$match_courseid});
2271: my %temp=('logout_'.$env{'request.course.id'} => time);
2272: &Apache::lonnet::put('email_status',\%temp);
2273: &Apache::lonnet::delenv('user.state.'.$env{'request.course.id'});
2274: &Apache::lonnet::appenv({"request.course.id" => '',
2275: "request.course.fn" => '',
2276: "request.course.uri" => '',
2277: "request.course.sec" => '',
2278: "request.role" => 'cm',
2279: "request.role.adv" => $env{'user.adv'},
2280: "request.role.domain" => $env{'user.domain'}});
2281: my $rolename = &Apache::loncommon::plainname($curr_role);
2282: $msg = '<p><form name="reselectrole" action="/adm/roles" method="post" />'.
2283: '<input type="hidden" name="newrole" value="" />'.
2284: '<input type="hidden" name="selectrole" value="1" />'.
2285: '<span class="LC_info">'.
2286: &mt('Your section has changed for your current [_1] role in [_2].',$rolename,$coursedesc).'</span><br />';
2287: my $button = '<input type="button" name="sectionchanged" value="'.
2288: &mt('Re-Select').'" onclick="javascript:enterrole(this.form,'."'$newrole','sectionchanged'".')" />';
2289: if ($newsec[0] eq 'none') {
2290: $msg .= &mt('[_1] to continue with your new section-less role.',$button);
2291: } else {
2292: $msg .= &mt('[_1] to continue with your new role in section ([_2]).',$button,$newsec[0]);
2293: }
2294: $msg .= '</form></p>';
2295: }
2296: } elsif ($currrole_expired) {
2297: $msg .= '<p class="LC_warning">';
2298: if (&Apache::loncommon::show_course()) {
2299: $msg .= &mt('Your role in the current course has expired.');
2300: } else {
2301: $msg .= &mt('Your current role has expired.');
2302: }
2303: $msg .= '<br />'.&mt('However you can continue to use this role until you logout, click the "Re-Select" button, or your session has been idle for more than 24 hours.').'</p>';
2304: }
2305: &Apache::lonnet::set_userprivs(\%userroles,\%allroles,\%allgroups,\%groups_roles);
2306: my ($curr_is_adv,$curr_role_adv,$curr_author,$curr_role_author);
2307: $curr_author = $env{'user.author'};
2308: if (($env{'request.role'} =~/^au/) || ($env{'request.role'} =~/^ca/) ||
2309: ($env{'request.role'} =~/^aa/)) {
2310: $curr_role_author=1;
2311: }
2312: $curr_is_adv = $env{'user.adv'};
2313: $curr_role_adv = $env{'request.role.adv'};
2314: if (keys(%userroles) > 0) {
2315: foreach my $role (@changed_roles) {
2316: unless(grep(/^\Q$role\E$/,@rolecodes)) {
2317: push(@rolecodes,$role);
2318: }
2319: }
2320: unless(grep(/^\Qcm\E$/,@rolecodes)) {
2321: push(@rolecodes,'cm');
2322: }
2323: &Apache::lonnet::appenv(\%userroles,\@rolecodes);
2324: }
2325: my %newenv;
2326: if (&Apache::lonnet::is_advanced_user($env{'user.domain'},$env{'user.name'})) {
2327: unless ($curr_is_adv) {
2328: $newenv{'user.adv'} = 1;
2329: }
2330: } elsif ($curr_is_adv && !$curr_role_adv) {
2331: &Apache::lonnet::delenv('user.adv');
2332: }
2333: my %authorroleshash =
2334: &Apache::lonnet::get_my_roles('','','userroles',['active'],['au','ca','aa']);
2335: if (keys(%authorroleshash)) {
2336: unless ($curr_author) {
2337: $newenv{'user.author'} = 1;
2338: }
2339: } elsif ($curr_author && !$curr_role_author) {
2340: &Apache::lonnet::delenv('user.author');
2341: }
2342: if ($env{'request.course.id'}) {
2343: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
2344: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
2345: my (@activecrsgroups,$crsgroupschanged);
2346: if ($env{'request.course.groups'}) {
2347: @activecrsgroups = split(/:/,$env{'request.course.groups'});
2348: foreach my $item (keys(%deletedroles)) {
2349: if ($item =~ m{^gr\./\Q$cdom\E/\Q$cnum\E/(\w+)$}) {
2350: if (grep(/^\Q$1\E$/,@activecrsgroups)) {
2351: $crsgroupschanged = 1;
2352: last;
2353: }
2354: }
2355: }
2356: }
2357: unless ($crsgroupschanged) {
2358: foreach my $item (keys(%newgroup)) {
2359: if ($item =~ m{^gr\./\Q$cdom\E/\Q$cnum\E/(\w+)$}) {
2360: if ($newgroup{$item} eq 'active') {
2361: $crsgroupschanged = 1;
2362: last;
2363: }
2364: }
2365: }
2366: }
2367: if ((ref($changed_groups{$env{'request.course.id'}}) eq 'HASH') ||
2368: (ref($groupchange{"/$cdom/$cnum"}) eq 'HASH') ||
2369: ($crsgroupschanged)) {
2370: my %grouproles = &Apache::lonnet::get_my_roles('','','userroles',
2371: ['active'],['gr'],[$cdom],1);
2372: my @activegroups;
2373: foreach my $item (keys(%grouproles)) {
2374: next unless($item =~ /^\Q$cnum\E:\Q$cdom\E/);
2375: my $group;
2376: my ($crsn,$crsd,$role,$remainder) = split(/:/,$item,4);
2377: if ($remainder =~ /:/) {
2378: (my $other,$group) = ($remainder =~ /^([\w:]+):([^:]+)$/);
2379: } else {
2380: $group = $remainder;
2381: }
2382: if ($group ne '') {
2383: push(@activegroups,$group);
2384: }
2385: }
2386: $newenv{'request.course.groups'} = join(':',@activegroups);
2387: }
2388: }
2389: if (keys(%newenv)) {
2390: &Apache::lonnet::appenv(\%newenv);
2391: }
2392: if (!@changed_roles || !(keys(%changed_groups))) {
2393: my ($rolesmsg,$groupsmsg);
2394: if (!@changed_roles) {
2395: if (&Apache::loncommon::show_course()) {
2396: $rolesmsg = &mt('No new courses or communities');
2397: } else {
2398: $rolesmsg = &mt('No role changes');
2399: }
2400: }
2401: if ($hasgroups && !(keys(%changed_groups)) && !(grep(/gr/,@changed_roles))) {
2402: $groupsmsg = &mt('No changes in course/community groups');
2403: }
2404: if (!@changed_roles && !(keys(%changed_groups))) {
2405: if (($msg ne '') || ($groupsmsg ne '')) {
2406: $msg .= '<ul>';
2407: if ($rolesmsg) {
2408: $msg .= '<li>'.$rolesmsg.'</li>';
2409: }
2410: if ($groupsmsg) {
2411: $msg .= '<li>'.$groupsmsg.'</li>';
2412: }
2413: $msg .= '</ul>';
2414: } else {
2415: $msg = ' <span class="LC_cusr_emph">'.$rolesmsg.'</span><br />';
2416: }
2417: return $msg;
2418: }
2419: }
2420: my $changemsg;
2421: if (@changed_roles > 0) {
2422: if (keys(%newgroup) > 0) {
2423: my $groupmsg;
2424: my (%curr_groups,%groupdescs,$currcrs);
2425: foreach my $item (sort(keys(%newgroup))) {
2426: if (&is_active_course($item,$refresh,$update,\%roleshash)) {
2427: if ($item =~ m{^gr\./($match_domain/$match_courseid)/(\w+)$}) {
2428: my ($cdom,$cnum) = split(/\//,$1);
2429: my $group = $2;
2430: if ($currcrs ne $cdom.'_'.$cnum) {
2431: if ($currcrs) {
2432: $groupmsg .= '</ul><li>';
2433: }
2434: $groupmsg .= '<li><b>'.
2435: $env{'course.'.$cdom.'_'.$cnum.'.description'}.'</b><ul>';
2436: $currcrs = $cdom.'_'.$cnum;
2437: }
2438: my $groupdesc;
2439: unless (ref($curr_groups{$cdom.'_'.$cnum}) eq 'HASH') {
2440: %{$curr_groups{$cdom.'_'.$cnum}} =
2441: &Apache::longroup::coursegroups($cdom,$cnum);
2442: }
2443: unless ((ref($groupdescs{$cdom.'_'.$cnum}) eq 'HASH') &&
2444: ($groupdescs{$cdom.'_'.$cnum}{$group})) {
2445:
2446: my %groupinfo =
2447: &Apache::longroup::get_group_settings($curr_groups{$cdom.'_'.$cnum}{$group});
2448: $groupdescs{$cdom.'_'.$cnum}{$group} =
2449: &unescape($groupinfo{'description'});
2450: }
2451: $groupdesc = $groupdescs{$cdom.'_'.$cnum}{$group};
2452: if ($groupdesc) {
2453: $groupmsg .= '<li>'.
2454: &mt('[_1] with status: [_2].',
2455: '<b>'.$groupdesc.'</b>',$newgroup{$item}).'</li>';
2456: }
2457: }
2458: }
2459: if ($groupmsg) {
2460: $groupmsg .= '</ul></li>';
2461: }
2462: }
2463: if ($groupmsg) {
2464: $changemsg .= '<li>'.
2465: &mt('Courses with new groups').'</li>'.
2466: '<ul>'.$groupmsg.'</ul></li>';
2467: }
2468: }
2469: if (keys(%newrole) > 0) {
2470: my $newmsg;
2471: foreach my $item (sort(keys(%newrole))) {
2472: my $desc = &role_desc($item,$update,$refresh,$now);
2473: if ($desc) {
2474: $newmsg .= '<li>'.
2475: &mt('[_1] with status: [_2].',
2476: $desc,$newrole{$item}).'</li>';
2477: }
2478: }
2479: if ($newmsg) {
2480: $changemsg .= '<li>'.&mt('New roles').
2481: '<ul>'.$newmsg.'</ul>'.
2482: '</li>';
2483: }
2484: }
2485: if (keys(%customprivchg) > 0) {
2486: my $privmsg;
2487: foreach my $item (sort(keys(%customprivchg))) {
2488: my $desc = &role_desc($item,$update,$refresh,$now);
2489: if ($desc) {
2490: $privmsg .= '<li>'.$desc.'</li>';
2491: }
2492: }
2493: if ($privmsg) {
2494: $changemsg .= '<li>'.
2495: &mt('Custom roles with privilege changes').
2496: '<ul>'.$privmsg.'</ul>'.
2497: '</li>';
2498: }
2499: }
2500: if (keys(%rolechange) > 0) {
2501: my $rolemsg;
2502: foreach my $item (sort(keys(%rolechange))) {
2503: my $desc = &role_desc($item,$update,$refresh,$now);
2504: if ($desc) {
2505: $rolemsg .= '<li>'.
2506: &mt('[_1] status now: [_2].',$desc,
2507: $rolechange{$item}).'</li>';
2508: }
2509: }
2510: if ($rolemsg) {
2511: $changemsg .= '<li>'.
2512: &mt('Existing roles with status changes').'</li>'.
2513: '<ul>'.$rolemsg.'</ul>'.
2514: '</li>';
2515: }
2516: }
2517: if (keys(%deletedroles) > 0) {
2518: my $delmsg;
2519: foreach my $item (sort(keys(%deletedroles))) {
2520: my $desc = &role_desc($item,$update,$refresh,$now);
2521: if ($desc) {
2522: $delmsg .= '<li>'.$desc.'</li>';
2523: }
2524: }
2525: if ($delmsg) {
2526: $changemsg .= '<li>'.
2527: &mt('Existing roles now expired').'</li>'.
2528: '<ul>'.$delmsg.'</ul>'.
2529: '</li>';
2530: }
2531: }
2532: }
2533: if ((keys(%changed_groups) > 0) || (keys(%groupchange) > 0)) {
2534: my $groupchgmsg;
2535: foreach my $key (sort(keys(%changed_groups))) {
2536: my $crs = 'gr/'.$key;
2537: $crs =~ s/_/\//;
2538: if (&is_active_course($crs,$refresh,$update,\%roleshash)) {
2539: if (ref($changed_groups{$key}) eq 'HASH') {
2540: my @showgroups;
2541: foreach my $group (sort(keys(%{$changed_groups{$key}}))) {
2542: if ($changed_groups{$key}{$group} eq 'active') {
2543: push(@showgroups,$group);
2544: }
2545: }
2546: if (@showgroups > 0) {
2547: $groupchgmsg .= '<li>'.
2548: &mt('Course: [_1], groups: [_2].',$key,
2549: join(', ',@showgroups)).
2550: '</li>';
2551: }
2552: }
2553: }
2554: }
2555: if (keys(%groupchange) > 0) {
2556: $groupchgmsg .= '<li>'.
2557: &mt('Existing course/community groups with status changes').'</li>'.
2558: '<ul>';
2559: foreach my $crs (sort(keys(%groupchange))) {
2560: my $cid = $crs;
2561: $cid=~s{^/}{};
2562: $cid=~s{/}{_};
2563: my $crsdesc = $env{'course.'.$cid.'.description'};
2564: my $cdom = $env{'course.'.$cid.'.domain'};
2565: my $cnum = $env{'course.'.$cid.'.num'};
2566: my %curr_groups = &Apache::longroup::coursegroups($cdom,$cnum);
2567: my %groupdesc;
2568: if (ref($groupchange{$crs}) eq 'HASH') {
2569: $groupchgmsg .= '<li>'.&mt('Course/Community: [_1]','<b>'.$crsdesc.'</b><ul>');
2570: foreach my $group (sort(keys(%{$groupchange{$crs}}))) {
2571: unless ($groupdesc{$group}) {
2572: my %groupinfo = &Apache::longroup::get_group_settings($curr_groups{$group});
2573: $groupdesc{$group} = &unescape($groupinfo{'description'});
2574: }
2575: $groupchgmsg .= '<li>'.&mt('Group: [_1] status now: [_2].','<b>'.$groupdesc{$group}.'</b>',$groupchange{$crs}{$group}).'</li>';
2576: }
2577: $groupchgmsg .= '</ul></li>';
2578: }
2579: }
2580: $groupchgmsg .= '</ul></li>';
2581: }
2582: if ($groupchgmsg) {
2583: $changemsg .= '<li>'.
2584: &mt('Courses with changes in groups').'</li>'.
2585: '<ul>'.$groupchgmsg.'</ul></li>';
2586: }
2587: }
2588: if ($changemsg) {
2589: $msg .= '<ul>'.$changemsg.'</ul>';
2590: } else {
2591: if (&Apache::loncommon::show_course()) {
2592: $msg = &mt('No new courses or communities');
2593: } else {
2594: $msg = &mt('No role changes');
2595: }
2596: }
2597: return $msg;
2598: }
2599:
2600: sub role_desc {
2601: my ($item,$update,$refresh,$now) = @_;
2602: my ($where,$trolecode,$role,$tstatus,$tend,$tstart,$twhere,
2603: $trole,$tremark);
2604: &Apache::lonnet::role_status('user.role.'.$item,$update,$refresh,
2605: $now,\$role,\$where,\$trolecode,
2606: \$tstatus,\$tstart,\$tend);
2607: return unless ($role);
2608: if ($role =~ /^cr\//) {
2609: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$role);
2610: $tremark = &mt('Customrole defined by [_1].',$rauthor.':'.$rdomain);
2611: }
2612: $trole=Apache::lonnet::plaintext($role);
2613: my ($tdom,$trest,$tsection)=
2614: split(/\//,Apache::lonnet::declutter($where));
2615: if (($role eq 'ca') || ($role eq 'aa')) {
2616: my $home = &Apache::lonnet::homeserver($trest,$tdom);
2617: $home = &Apache::lonnet::hostname($home);
2618: $twhere=&mt('User').': '.$trest.' '.&mt('Domain').
2619: ': '.$tdom.' '.&mt('Server').': '.$home;
2620: } elsif ($role eq 'au') {
2621: my $home = &Apache::lonnet::homeserver
2622: ($env{'user.name'},$env{'user.domain'});
2623: $home = &Apache::lonnet::hostname($home);
2624: $twhere=&mt('Domain').': '.$tdom.' '.&mt('Server').
2625: ': '.$home;
2626: } elsif ($trest) {
2627: my $tcourseid=$tdom.'_'.$trest;
2628: my $crstype = &Apache::loncommon::course_type($tcourseid);
2629: $trole = &Apache::lonnet::plaintext($role,$crstype,$tcourseid);
2630: if ($env{'course.'.$tcourseid.'.description'}) {
2631: $twhere=$env{'course.'.$tcourseid.'.description'};
2632: } else {
2633: my %newhash=&Apache::lonnet::coursedescription($tcourseid);
2634: if (%newhash) {
2635: $twhere=$newhash{'description'};
2636: } else {
2637: $twhere=&mt('Currently not available');
2638: }
2639: }
2640: if ($tsection) {
2641: $twhere.= ' '.&mt('Section').': '.$tsection;
2642: }
2643: if ($role ne 'st') {
2644: $twhere.= ' '.&mt('Domain').': '.$tdom;
2645: }
2646: } elsif ($tdom) {
2647: $twhere = &mt('Domain').': '.$tdom;
2648: }
2649: my $output;
2650: if ($trole) {
2651: $output = $trole;
2652: if ($twhere) {
2653: $output .= " -- $twhere";
2654: }
2655: if ($tremark) {
2656: $output .= '<br />'.$tremark;
2657: }
2658: }
2659: return $output;
2660: }
2661:
2662: sub curr_role_status {
2663: my ($start,$end,$refresh,$update) = @_;
2664: if (($start) && ($start<0)) { return 'deleted' };
2665: my $status = 'active';
2666: if (($end) && ($end<=$update)) {
2667: $status = 'previous';
2668: }
2669: if (($start) && ($refresh<$start)) {
2670: $status = 'future';
2671: }
2672: return $status;
2673: }
2674:
2675: sub gather_roleprivs {
2676: my ($allroles,$allgroups,$userroles,$area,$role,$tstart,$tend,$status) = @_;
2677: return unless ((ref($allroles) eq 'HASH') && (ref($allgroups) eq 'HASH') && (ref($userroles) eq 'HASH'));
2678: if (($area ne '') && ($role ne '')) {
2679: &Apache::lonnet::userrolelog($role,$env{'user.name'},$env{'user.domain'},
2680: $area,$tstart,$tend);
2681: my $spec=$role.'.'.$area;
2682: $userroles->{'user.role.'.$spec} = $tstart.'.'.$tend;
2683: my ($tdummy,$tdomain,$trest)=split(/\//,$area);
2684: if ($status eq 'active') {
2685: if ($role =~ /^cr\//) {
2686: &Apache::lonnet::custom_roleprivs($allroles,$role,$tdomain,$trest,$spec,$area);
2687: } elsif ($role eq 'gr') {
2688: my %rolehash = &Apache::lonnet::get('roles',[$area.'_'.$role],
2689: $env{'user.domain'},
2690: $env{'user.name'});
2691: my ($trole) = split(/_/,$rolehash{$area.'_'.$role},2);
2692: (undef,my $group_privs) = split(/\//,$trole);
2693: $group_privs = &unescape($group_privs);
2694: &Apache::lonnet::group_roleprivs($allgroups,$area,$group_privs,$tend,$tstart);
2695: } else {
2696: &Apache::lonnet::standard_roleprivs($allroles,$role,$tdomain,$spec,$trest,$area);
2697: }
2698: }
2699: }
2700: return;
2701: }
2702:
2703: sub is_active_course {
2704: my ($rolekey,$refresh,$update,$roleshashref) = @_;
2705: return unless(ref($roleshashref) eq 'HASH');
2706: my ($role,$cdom,$cnum) = split(/\//,$rolekey);
2707: my $is_active;
2708: foreach my $key (keys(%{$roleshashref})) {
2709: if ($key =~ /^\Q$cnum\E:\Q$cdom\E:/) {
2710: my ($tstart,$tend) = split(/:/,$roleshashref->{$key});
2711: my $status = &curr_role_status($tstart,$tend,$refresh,$update);
2712: if ($status eq 'active') {
2713: $is_active = 1;
2714: last;
2715: }
2716: }
2717: }
2718: return $is_active;
2719: }
2720:
2721: sub get_roles_functions {
2722: my ($rolescount) = @_;
2723: my @links;
2724: push(@links,["javascript:rolesView('doupdate');",'start-here-22x22',&mt('Check for changes')]);
2725: if ($env{'environment.canrequest.author'}) {
2726: unless (&Apache::loncoursequeueadmin::is_active_author()) {
2727: push(@links,["javascript:rolesView('requestauthor');",'list-add-22x22',&mt('Request author role')]);
2728: }
2729: }
2730: if (($rolescount > 3) || ($env{'environment.recentroles'})) {
2731: push(@links,['/adm/preferences?action=changerolespref&returnurl=/adm/roles','role_hotlist-22x22',&mt('Hotlist')]);
2732: }
2733: if (&Apache::lonmenu::check_for_rcrs()) {
2734: push(@links,['/adm/requestcourse','rcrs-22x22',&mt('Request course')]);
2735: }
2736: if ($env{'form.state'} eq 'queued') {
2737: push(@links,["javascript:rolesView('noqueued');",'selfenrl-queue-22x22',&mt('Hide queued')]);
2738: } else {
2739: push(@links,["javascript:rolesView('queued');",'selfenrl-queue-22x22',&mt('Show queued')]);
2740: }
2741: if ($env{'user.adv'}) {
2742: if ($env{'form.display'} eq 'showall') {
2743: push(@links,["javascript:rolesView('noshowall');",'edit-redo-22x22',&mt('Exclude expired roles')]);
2744: } else {
2745: push(@links,["javascript:rolesView('showall');",'edit-undo-22x22',&mt('Include expired roles')]);
2746: }
2747: }
2748: my $funcs = &Apache::lonhtmlcommon::start_funclist();
2749: foreach my $link (@links) {
2750: $funcs .= &Apache::lonhtmlcommon::add_item_funclist(
2751: '<a href="'.$link->[0].'" class="LC_menubuttons_link">'.
2752: '<img src="/res/adm/pages/'.$link->[1].'.png" class="LC_icon" alt="'.$link->[2].'" />'.
2753: $link->[2].'</a>');
2754: }
2755: $funcs .= &Apache::lonhtmlcommon::end_funclist();
2756: return &Apache::loncommon::head_subbox($funcs);
2757: }
2758:
2759: sub get_queued {
2760: my ($output,%reqcrs);
2761: my ($types,$typenames) = &Apache::loncommon::course_types();
2762: my %statusinfo = &Apache::lonnet::dump('courserequests',$env{'user.domain'},
2763: $env{'user.name'},'^status:');
2764: foreach my $key (keys(%statusinfo)) {
2765: next unless (($statusinfo{$key} eq 'approval') || ($statusinfo{$key} eq 'pending'));
2766: (undef,my($cdom,$cnum)) = split(':',$key);
2767: my $requestkey = $cdom.'_'.$cnum;
2768: if ($requestkey =~ /^($match_domain)_($match_courseid)$/) {
2769: my %history = &Apache::lonnet::restore($requestkey,'courserequests',
2770: $env{'user.domain'},$env{'user.name'});
2771: next if ((exists($history{'status'})) && ($history{'status'} eq 'created'));
2772: my $reqtime = $history{'reqtime'};
2773: my $lastupdate = $history{'timestamp'};
2774: my $showtype = $history{'crstype'};
2775: if (defined($typenames->{$history{'crstype'}})) {
2776: $showtype = $typenames->{$history{'crstype'}};
2777: }
2778: my $description;
2779: if (ref($history{'details'}) eq 'HASH') {
2780: $description = $history{details}{'cdescr'};
2781: }
2782: @{$reqcrs{$reqtime}} = ($description,$showtype);
2783: }
2784: }
2785: my @sortedtimes = sort {$a <=> $b} (keys(%reqcrs));
2786: if (@sortedtimes > 0) {
2787: $output .= '<p><b>'.&mt('Course/Community requests').'</b><br />'.
2788: &Apache::loncommon::start_data_table().
2789: &Apache::loncommon::start_data_table_header_row().
2790: '<th>'.&mt('Date requested').'</th>'.
2791: '<th>'.&mt('Course title').'</th>'.
2792: '<th>'.&mt('Course type').'</th>';
2793: &Apache::loncommon::end_data_table_header_row();
2794: foreach my $reqtime (@sortedtimes) {
2795: next unless (ref($reqcrs{$reqtime}) eq 'ARRAY');
2796: $output .= &Apache::loncommon::start_data_table_row().
2797: '<td>'.&Apache::lonlocal::locallocaltime($reqtime).'</td>'.
2798: '<td>'.join('</td><td>',@{$reqcrs{$reqtime}}).'</td>'.
2799: &Apache::loncommon::end_data_table_row();
2800: }
2801: $output .= &Apache::loncommon::end_data_table().
2802: '<br /></p>';
2803: }
2804: my $queuedselfenroll = &Apache::loncoursequeueadmin::queued_selfenrollment(1);
2805: if ($queuedselfenroll) {
2806: $output .= '<p><b>'.&mt('Enrollment requests').'</b><br />'.
2807: $queuedselfenroll.'<br /></p>';
2808: }
2809: if ($env{'environment.canrequest.author'}) {
2810: unless (&Apache::loncoursequeueadmin::is_active_author()) {
2811: my $requestauthor;
2812: my ($status,$timestamp) = split(/:/,$env{'environment.requestauthorqueued'});
2813: if (($status eq 'approval') || ($status eq 'approved')) {
2814: $output .= '<p><b>'.&mt('Author role request').'</b><br />';
2815: if ($status eq 'approval') {
2816: $output .= &mt('A request for authoring space submitted on [_1] is awaiting approval',
2817: &Apache::lonlocal::locallocaltime($timestamp));
2818: } elsif ($status eq 'approved') {
2819: my %roleshash =
2820: &Apache::lonnet::get_my_roles($env{'user.name'},$env{'user.domain'},'userroles',
2821: ['active'],['au'],[$env{'user.domain'}]);
2822: if (keys(%roleshash)) {
2823: $output .= '<span class="LC_info">'.
2824: &mt('Your request for an author role has been approved.').'<br />'.
2825: &mt('Use the "Check for changes" link to update your list of roles.').
2826: '</span>';
2827: }
2828: }
2829: $output .= '</p>';
2830: }
2831: }
2832: }
2833: unless ($output) {
2834: if ($env{'environment.canrequest.author'} || $env{'environment.canrequest.official'} ||
2835: $env{'environment.canrequest.unofficial'} || $env{'environment.canrequest.community'}) {
2836: $output = &mt('No requests for courses, communities or authoring currently queued');
2837: } else {
2838: $output = &mt('No enrollment requests currently queued awaiting approval');
2839: }
2840: }
2841: return '<div class="LC_left_float"><fieldset><legend>'.&mt('Queued requests').'</legend>'.
2842: $output.'</fieldset></div><br clear="all" />';
2843: }
2844:
2845: 1;
2846: __END__
2847:
2848: =head1 NAME
2849:
2850: Apache::lonroles - User Roles Screen
2851:
2852: =head1 SYNOPSIS
2853:
2854: Invoked by /etc/httpd/conf/srm.conf:
2855:
2856: <Location /adm/roles>
2857: PerlAccessHandler Apache::lonacc
2858: SetHandler perl-script
2859: PerlHandler Apache::lonroles
2860: ErrorDocument 403 /adm/login
2861: ErrorDocument 500 /adm/errorhandler
2862: </Location>
2863:
2864: =head1 OVERVIEW
2865:
2866: =head2 Choosing Roles
2867:
2868: C<lonroles> is a handler that allows a user to switch roles in
2869: mid-session. LON-CAPA attempts to work with "No Role Specified", the
2870: default role that a user has before selecting a role, as widely as
2871: possible, but certain handlers for example need specification which
2872: course they should act on, etc. Both in this scenario, and when the
2873: handler determines via C<lonnet>'s C<&allowed> function that a certain
2874: action is not allowed, C<lonroles> is used as error handler. This
2875: allows the user to select another role which may have permission to do
2876: what they were trying to do.
2877:
2878: =begin latex
2879:
2880: \begin{figure}
2881: \begin{center}
2882: \includegraphics[width=0.45\paperwidth,keepaspectratio]{Sample_Roles_Screen}
2883: \caption{\label{Sample_Roles_Screen}Sample Roles Screen}
2884: \end{center}
2885: \end{figure}
2886:
2887: =end latex
2888:
2889: =head2 Role Initialization
2890:
2891: The privileges for a user are established at login time and stored in the session environment. As a consequence, a new role does not become active till the next login. Handlers are able to query for privileges using C<lonnet>'s C<&allowed> function. When a user first logs in, their role is the "common" role, which means that they have the sum of all of their privileges. During a session it might become necessary to choose a particular role, which as a consequence also limits the user to only the privileges in that particular role.
2892:
2893: =head1 INTRODUCTION
2894:
2895: This module enables a user to select what role he wishes to
2896: operate under (instructor, student, teaching assistant, course
2897: coordinator, etc). These roles are pre-established by the actions
2898: of upper-level users.
2899:
2900: This is part of the LearningOnline Network with CAPA project
2901: described at http://www.lon-capa.org.
2902:
2903: =head1 HANDLER SUBROUTINE
2904:
2905: This routine is called by Apache and mod_perl.
2906:
2907: =over 4
2908:
2909: =item *
2910:
2911: Roles Initialization (yes/no)
2912:
2913: =item *
2914:
2915: Get Error Message from Environment
2916:
2917: =item *
2918:
2919: Who is this?
2920:
2921: =item *
2922:
2923: Generate Page Output
2924:
2925: =item *
2926:
2927: Choice or no choice
2928:
2929: =item *
2930:
2931: Table
2932:
2933: =item *
2934:
2935: Privileges
2936:
2937: =back
2938:
2939: =cut
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