1: # The LearningOnline Network with CAPA
2: # User Roles Screen
3: #
4: # $Id: lonroles.pm,v 1.240.2.2 2009/12/07 04:38:22 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. C<lonroles> can also be accessed via the
61: B<CRS> button in the Remote Control.
62:
63: =begin latex
64:
65: \begin{figure}
66: \begin{center}
67: \includegraphics[width=0.45\paperwidth,keepaspectratio]{Sample_Roles_Screen}
68: \caption{\label{Sample_Roles_Screen}Sample Roles Screen}
69: \end{center}
70: \end{figure}
71:
72: =end latex
73:
74: =head2 Role Initialization
75:
76: 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.
77:
78: =head1 INTRODUCTION
79:
80: This module enables a user to select what role he wishes to
81: operate under (instructor, student, teaching assistant, course
82: coordinator, etc). These roles are pre-established by the actions
83: of upper-level users.
84:
85: This is part of the LearningOnline Network with CAPA project
86: described at http://www.lon-capa.org.
87:
88: =head1 HANDLER SUBROUTINE
89:
90: This routine is called by Apache and mod_perl.
91:
92: =over 4
93:
94: =item *
95:
96: Roles Initialization (yes/no)
97:
98: =item *
99:
100: Get Error Message from Environment
101:
102: =item *
103:
104: Who is this?
105:
106: =item *
107:
108: Generate Page Output
109:
110: =item *
111:
112: Choice or no choice
113:
114: =item *
115:
116: Table
117:
118: =item *
119:
120: Privileges
121:
122: =back
123:
124: =cut
125:
126:
127: package Apache::lonroles;
128:
129: use strict;
130: use Apache::lonnet;
131: use Apache::lonuserstate();
132: use Apache::Constants qw(:common);
133: use Apache::File();
134: use Apache::lonmenu;
135: use Apache::loncommon;
136: use Apache::lonhtmlcommon;
137: use Apache::lonannounce;
138: use Apache::lonlocal;
139: use Apache::lonpageflip();
140: use Apache::lonnavdisplay();
141: use GDBM_File;
142: use LONCAPA qw(:DEFAULT :match);
143: use HTML::Entities;
144:
145:
146: sub redirect_user {
147: my ($r,$title,$url,$msg,$launch_nav) = @_;
148: $msg = $title if (! defined($msg));
149: &Apache::loncommon::content_type($r,'text/html');
150: &Apache::loncommon::no_cache($r);
151: $r->send_http_header;
152: my $swinfo=&Apache::lonmenu::rawconfig();
153: my $navwindow;
154: if ($launch_nav eq 'on') {
155: $navwindow.=&Apache::lonnavdisplay::launch_win('now',undef,undef,
156: ($url =~ m-^/adm/whatsnew-));
157: } else {
158: $navwindow.=&Apache::lonnavmaps::close();
159: }
160:
161: # Breadcrumbs
162: my $brcrum = [{'href' => $url,
163: 'text' => 'Switching Role'},];
164: my $start_page = &Apache::loncommon::start_page('Switching Role',undef,
165: {'redirect' => [1,$url],
166: 'bread_crumbs' => $brcrum,});
167: my $end_page = &Apache::loncommon::end_page();
168:
169: # Note to style police:
170: # This must only replace the spaces, nothing else, or it bombs elsewhere.
171: $url=~s/ /\%20/g;
172: $r->print(<<ENDREDIR);
173: $start_page
174: <script type="text/javascript">
175: // <![CDATA[
176: $swinfo
177: // ]]>
178: </script>
179: $navwindow
180: <p>$msg</p>
181: $end_page
182: ENDREDIR
183: return;
184: }
185:
186: sub error_page {
187: my ($r,$error,$dest)=@_;
188: &Apache::loncommon::content_type($r,'text/html');
189: &Apache::loncommon::no_cache($r);
190: $r->send_http_header;
191: return OK if $r->header_only;
192: # Breadcrumbs
193: my $brcrum = [{'href' => $dest,
194: 'text' => 'Problems during Course Initialization'},];
195: $r->print(&Apache::loncommon::start_page('Problems during Course Initialization',
196: undef,
197: {'bread_crumbs' => $brcrum,})
198: );
199: $r->print(
200: '<script type="text/javascript">'.
201: '// <![CDATA['.
202: &Apache::lonmenu::rawconfig().
203: '// ]]>'.
204: '</script>'.
205: '<p class="LC_error">'.&mt('The following problems occurred:').
206: '<br />'.
207: $error.
208: '</p><br /><a href="'.$dest.'">'.&mt('Continue').'</a>'
209: );
210: $r->print(&Apache::loncommon::end_page());
211: }
212:
213: sub handler {
214:
215: my $r = shift;
216:
217: my $now=time;
218: my $then=$env{'user.login.time'};
219: my $refresh=$env{'user.refresh.time'};
220: if (!$refresh) {
221: $refresh = $then;
222: }
223: my $envkey;
224: my %dcroles = ();
225: my $numdc = &check_fordc(\%dcroles,$then);
226: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'});
227:
228: # ================================================================== Roles Init
229: if ($env{'form.selectrole'}) {
230:
231: my $locknum=&Apache::lonnet::get_locks();
232: if ($locknum) { return 409; }
233:
234: if ($env{'form.newrole'}) {
235: $env{'form.'.$env{'form.newrole'}}=1;
236: }
237: if ($env{'request.course.id'}) {
238: # Check if user is CC trying to select a course role
239: if ($env{'form.switchrole'}) {
240: if (!defined($env{'user.role.'.$env{'form.switchrole'}})) {
241: &adhoc_course_role($refresh,$then);
242: }
243: }
244: my %temp=('logout_'.$env{'request.course.id'} => time);
245: &Apache::lonnet::put('email_status',\%temp);
246: &Apache::lonnet::delenv('user.state.'.$env{'request.course.id'});
247: }
248: &Apache::lonnet::appenv({"request.course.id" => '',
249: "request.course.fn" => '',
250: "request.course.uri" => '',
251: "request.course.sec" => '',
252: "request.role" => 'cm',
253: "request.role.adv" => $env{'user.adv'},
254: "request.role.domain" => $env{'user.domain'}});
255: # Check if user is a DC trying to enter a course or author space and needs privs to be created
256: if ($numdc > 0) {
257: foreach my $envkey (keys %env) {
258: # Is this an ad-hoc Coordinator role?
259: if (my ($ccrole,$domain,$coursenum) =
260: ($envkey =~ m-^form\.(cc|co)\./($match_domain)/($match_courseid)$-)) {
261: if ($dcroles{$domain}) {
262: &Apache::lonnet::check_adhoc_privs($domain,$coursenum,
263: $then,$refresh,$now,$ccrole);
264: }
265: last;
266: }
267: # Is this an ad-hoc CA-role?
268: if (my ($domain,$user) =
269: ($envkey =~ m-^form\.ca\./($match_domain)/($match_username)$-)) {
270: if (($domain eq $env{'user.domain'}) && ($user eq $env{'user.name'})) {
271: delete($env{$envkey});
272: $env{'form.au./'.$domain.'/'} = 1;
273: my ($server_status,$home) = &check_author_homeserver($user,$domain);
274: if ($server_status eq 'switchserver') {
275: my $trolecode = 'au./'.$domain.'/';
276: my $switchserver = '/adm/switchserver?otherserver='.$home.'&role='.$trolecode;
277: $r->internal_redirect($switchserver);
278: }
279: last;
280: }
281: if (my ($castart,$caend) = ($env{'user.role.ca./'.$domain.'/'.$user} =~ /^(\d*)\.(\d*)$/)) {
282: if (((($castart) && ($castart < $now)) || !$castart) &&
283: ((!$caend) || (($caend) && ($caend > $now)))) {
284: my ($server_status,$home) = &check_author_homeserver($user,$domain);
285: if ($server_status eq 'switchserver') {
286: my $trolecode = 'ca./'.$domain.'/'.$user;
287: my $switchserver = '/adm/switchserver?otherserver='.$home.'&role='.$trolecode;
288: $r->internal_redirect($switchserver);
289: }
290: last;
291: }
292: }
293: # Check if author blocked ca-access
294: my %blocked=&Apache::lonnet::get('environment',['domcoord.author'],$domain,$user);
295: if ($blocked{'domcoord.author'} eq 'blocked') {
296: delete($env{$envkey});
297: $env{'user.error.msg'}=':::1:User '.$user.' in domain '.$domain.' blocked domain coordinator access';
298: last;
299: }
300: if ($dcroles{$domain}) {
301: my ($server_status,$home) = &check_author_homeserver($user,$domain);
302: if (($server_status eq 'ok') || ($server_status eq 'switchserver')) {
303: &Apache::lonnet::check_adhoc_privs($domain,$user,$then,
304: $refresh,$now,'ca');
305: if ($server_status eq 'switchserver') {
306: my $trolecode = 'ca./'.$domain.'/'.$user;
307: my $switchserver = '/adm/switchserver?'
308: .'otherserver='.$home.'&role='.$trolecode;
309: $r->internal_redirect($switchserver);
310: }
311: } else {
312: delete($env{$envkey});
313: }
314: } else {
315: delete($env{$envkey});
316: }
317: last;
318: }
319: }
320: }
321: if (($env{'form.cm'}) && ($env{'form.orgurl'})) {
322: $r->internal_redirect($env{'form.orgurl'});
323: }
324:
325: foreach $envkey (keys %env) {
326: next if ($envkey!~/^user\.role\./);
327: my ($where,$trolecode,$role,$tstatus,$tend,$tstart);
328: &Apache::lonnet::role_status($envkey,$then,$refresh,$now,\$role,\$where,
329: \$trolecode,\$tstatus,\$tstart,\$tend);
330: if ($env{'form.'.$trolecode}) {
331: if ($tstatus eq 'is') {
332: $where=~s/^\///;
333: my ($cdom,$cnum,$csec)=split(/\//,$where);
334: # check for course groups
335: my %coursegroups = &Apache::lonnet::get_active_groups(
336: $env{'user.domain'},$env{'user.name'},$cdom, $cnum);
337: my $cgrps = join(':',keys(%coursegroups));
338:
339: # store role if recent_role list being kept
340: if ($env{'environment.recentroles'}) {
341: my %frozen_roles =
342: &Apache::lonhtmlcommon::get_recent_frozen('roles',$env{'environment.recentrolesn'});
343: &Apache::lonhtmlcommon::store_recent('roles',
344: $trolecode,' ',$frozen_roles{$trolecode});
345: }
346:
347:
348: # check for keyed access
349: if (($role eq 'st') &&
350: ($env{'course.'.$cdom.'_'.$cnum.'.keyaccess'} eq 'yes')) {
351: # who is key authority?
352: my $authdom=$cdom;
353: my $authnum=$cnum;
354: if ($env{'course.'.$cdom.'_'.$cnum.'.keyauth'}) {
355: ($authnum,$authdom)=
356: split(/:/,$env{'course.'.$cdom.'_'.$cnum.'.keyauth'});
357: }
358: # check with key authority
359: unless (&Apache::lonnet::validate_access_key(
360: $env{'environment.key.'.$cdom.'_'.$cnum},
361: $authdom,$authnum)) {
362: # there is no valid key
363: if ($env{'form.newkey'}) {
364: # student attempts to register a new key
365: &Apache::loncommon::content_type($r,'text/html');
366: &Apache::loncommon::no_cache($r);
367: $r->send_http_header;
368: my $swinfo=&Apache::lonmenu::rawconfig();
369: my $start_page=&Apache::loncommon::start_page
370: ('Verifying Access Key to Unlock this Course');
371: my $end_page=&Apache::loncommon::end_page();
372: my $buttontext=&mt('Enter Course');
373: my $message=&mt('Successfully registered key');
374: my $assignresult=
375: &Apache::lonnet::assign_access_key(
376: $env{'form.newkey'},
377: $authdom,$authnum,
378: $cdom,$cnum,
379: $env{'user.domain'},
380: $env{'user.name'},
381: &mt('Assigned from [_1] at [_2] for [_3]'
382: ,$ENV{'REMOTE_ADDR'}
383: ,&Apache::lonlocal::locallocaltime()
384: ,$trolecode)
385: );
386: unless ($assignresult eq 'ok') {
387: $assignresult=~s/^error\:\s*//;
388: $message=&mt($assignresult).
389: '<br /><a href="/adm/logout">'.
390: &mt('Logout').'</a>';
391: $buttontext=&mt('Re-Enter Key');
392: }
393: $r->print(<<ENDENTEREDKEY);
394: $start_page
395: <script type="text/javascript">
396: // <![CDATA[
397: $swinfo
398: // ]]>
399: </script>
400: <form action="" method="post">
401: <input type="hidden" name="selectrole" value="1" />
402: <input type="hidden" name="$trolecode" value="1" />
403: <span class="LC_fontsize_large">$message</span><br />
404: <input type="submit" value="$buttontext" />
405: </form>
406: $end_page
407: ENDENTEREDKEY
408: return OK;
409: } else {
410: # print form to enter a new key
411: &Apache::loncommon::content_type($r,'text/html');
412: &Apache::loncommon::no_cache($r);
413: $r->send_http_header;
414: my $swinfo=&Apache::lonmenu::rawconfig();
415: my $start_page=&Apache::loncommon::start_page
416: ('Enter Access Key to Unlock this Course');
417: my $end_page=&Apache::loncommon::end_page();
418: $r->print(<<ENDENTERKEY);
419: $start_page
420: <script type="text/javascript">
421: // <![CDATA[
422: $swinfo
423: // ]]>
424: </script>
425: <form action="" method="post">
426: <input type="hidden" name="selectrole" value="1" />
427: <input type="hidden" name="$trolecode" value="1" />
428: <input type="text" size="20" name="newkey" value="$env{'form.newkey'}" />
429: <input type="submit" value="Enter key" />
430: </form>
431: $end_page
432: ENDENTERKEY
433: return OK;
434: }
435: }
436: }
437: &Apache::lonnet::log($env{'user.domain'},
438: $env{'user.name'},
439: $env{'user.home'},
440: "Role ".$trolecode);
441:
442: &Apache::lonnet::appenv(
443: {'request.role' => $trolecode,
444: 'request.role.domain' => $cdom,
445: 'request.course.sec' => $csec,
446: 'request.course.groups' => $cgrps});
447: my $tadv=0;
448:
449: if (($cnum) && ($role ne 'ca') && ($role ne 'aa')) {
450: my $msg;
451: my ($furl,$ferr)=
452: &Apache::lonuserstate::readmap($cdom.'/'.$cnum);
453: if (($env{'form.orgurl'}) &&
454: ($env{'form.orgurl'}!~/^\/adm\/flip/)) {
455: my $dest=$env{'form.orgurl'};
456: if ($env{'form.symb'}) {
457: if ($dest =~ /\?/) {
458: $dest .= '&';
459: } else {
460: $dest .= '?'
461: }
462: $dest .= 'symb='.$env{'form.symb'};
463: }
464: if (&Apache::lonnet::allowed('adv') eq 'F') { $tadv=1; }
465: &Apache::lonnet::appenv({'request.role.adv'=>$tadv});
466: if (($ferr) && ($tadv)) {
467: &error_page($r,$ferr,$dest);
468: } else {
469: $r->internal_redirect($dest);
470: }
471: return OK;
472: } else {
473: if (!$env{'request.course.id'}) {
474: &Apache::lonnet::appenv(
475: {"request.course.id" => $cdom.'_'.$cnum});
476: $furl='/adm/roles?tryagain=1';
477: $msg='<p><span class="LC_error">'
478: .&mt('Could not initialize [_1] at this time.',
479: $env{'course.'.$cdom.'_'.$cnum.'.description'})
480: .'</span></p>'
481: .'<p>'.&mt('Please try again.').'</p>'
482: .'<p>'.$ferr.'</p>';
483: }
484: if (&Apache::lonnet::allowed('adv') eq 'F') { $tadv=1; }
485: &Apache::lonnet::appenv({'request.role.adv'=>$tadv});
486:
487: if (($ferr) && ($tadv)) {
488: &error_page($r,$ferr,$furl);
489: } else {
490: # Check to see if the user is a CC entering a course
491: # for the first time
492: my (undef, undef, $role, $courseid) = split(/\./, $envkey);
493: if (substr($courseid, 0, 1) eq '/') {
494: $courseid = substr($courseid, 1);
495: }
496: $courseid =~ s/\//_/;
497: if ((($role eq 'cc') || ($role eq 'co'))
498: && ($env{'course.' . $courseid .'.course.helper.not.run'})) {
499: $furl = "/adm/helper/course.initialization.helper";
500: # Send the user to the course they selected
501: } elsif ($env{'request.course.id'}) {
502: if ($env{'form.destinationurl'}) {
503: my $dest = $env{'form.destinationurl'};
504: if ($env{'form.destsymb'} ne '') {
505: my $esc_symb = &HTML::Entities::encode($env{'form.destsymb'},'"<>&');
506: $dest .= '?symb='.$esc_symb;
507: }
508: &redirect_user($r,&mt('Entering [_1]',
509: $env{'course.'.$courseid.'.description'}),
510: $dest,$msg,
511: $env{'environment.remotenavmap'});
512: return OK;
513: }
514: if (&Apache::lonnet::allowed('whn',
515: $env{'request.course.id'})
516: || &Apache::lonnet::allowed('whn',
517: $env{'request.course.id'}.'/'
518: .$env{'request.course.sec'})
519: ) {
520: my $startpage = &courseloadpage($courseid);
521: unless ($startpage eq 'firstres') {
522: $msg = &mt('Entering [_1] ...',
523: $env{'course.'.$courseid.'.description'});
524: &redirect_user($r,&mt('New in course'),
525: '/adm/whatsnew?refpage=start',$msg,
526: $env{'environment.remotenavmap'});
527: return OK;
528: }
529: }
530: }
531: # Are we allowed to look at the first resource?
532: if ($furl !~ m|^/adm/|) {
533: # Guess not ...
534: $furl=&Apache::lonpageflip::first_accessible_resource();
535: }
536: $msg = &mt('Entering [_1] ...',
537: $env{'course.'.$courseid.'.description'});
538: &redirect_user($r,&mt('Entering [_1]',
539: $env{'course.'.$courseid.'.description'}),
540: $furl,$msg,
541: $env{'environment.remotenavmap'});
542: }
543: return OK;
544: }
545: }
546: #
547: # Send the user to the construction space they selected
548: if ($role =~ /^(au|ca|aa)$/) {
549: my $redirect_url = '/priv/';
550: if ($role eq 'au') {
551: $redirect_url.=$env{'user.name'};
552: } else {
553: $where =~ /\/(.*)$/;
554: $redirect_url .= $1;
555: }
556: $redirect_url .= '/';
557: &redirect_user($r,&mt('Entering Construction Space'),
558: $redirect_url);
559: return OK;
560: }
561: if ($role eq 'dc') {
562: my $redirect_url = '/adm/menu/';
563: &redirect_user($r,&mt('Loading Domain Coordinator Menu'),
564: $redirect_url);
565: return OK;
566: }
567: if ($role eq 'sc') {
568: my $redirect_url = '/adm/grades?command=scantronupload';
569: &redirect_user($r,&mt('Loading Data Upload Page'),
570: $redirect_url);
571: return OK;
572: }
573: }
574: }
575: }
576: }
577:
578:
579: # =============================================================== No Roles Init
580:
581: &Apache::loncommon::content_type($r,'text/html');
582: &Apache::loncommon::no_cache($r);
583: $r->send_http_header;
584: return OK if $r->header_only;
585:
586: my $crumbtext = 'User Roles';
587: my $pagetitle = 'My Roles';
588: my $recent = &mt('Recent Roles');
589: my $show_course=&Apache::loncommon::show_course();
590: if ($show_course) {
591: $crumbtext = 'Courses';
592: $pagetitle = 'My Courses';
593: $recent = &mt('Recent Courses');
594: }
595: my $brcrum =[{href=>"/adm/roles",text=>$crumbtext}];
596: my $swinfo=&Apache::lonmenu::rawconfig();
597: my $start_page=&Apache::loncommon::start_page($pagetitle,undef,{bread_crumbs=>$brcrum});
598: my $standby=&mt('Role selected. Please stand by.');
599: $standby=~s/\n/\\n/g;
600: my $noscript='<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 />';
601:
602: $r->print(<<ENDHEADER);
603: $start_page
604: <br />
605: <noscript>
606: $noscript
607: </noscript>
608: <script type="text/javascript">
609: // <![CDATA[
610: $swinfo
611: window.focus();
612:
613: active=true;
614:
615: function enterrole (thisform,rolecode,buttonname) {
616: if (active) {
617: active=false;
618: document.title='$standby';
619: window.status='$standby';
620: thisform.newrole.value=rolecode;
621: thisform.submit();
622: } else {
623: alert('$standby');
624: }
625: }
626: // ]]>
627: </script>
628: ENDHEADER
629:
630: # ------------------------------------------ Get Error Message from Environment
631:
632: my ($fn,$priv,$nochoose,$error,$msg)=split(/:/,$env{'user.error.msg'});
633: if ($env{'user.error.msg'}) {
634: $r->log_reason(
635: "$msg for $env{'user.name'} domain $env{'user.domain'} access $priv",$fn);
636: }
637:
638: # ------------------------------------------------- Can this user re-init, etc?
639:
640: my $advanced=$env{'user.adv'};
641: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['tryagain']);
642: my $tryagain=$env{'form.tryagain'};
643: my $reinit=$env{'user.reinit'};
644: delete $env{'user.reinit'};
645:
646: # -------------------------------------------------------- Generate Page Output
647: # --------------------------------------------------------------- Error Header?
648: if ($error) {
649: $r->print("<h1>".&mt('LON-CAPA Access Control')."</h1>");
650: $r->print("<!-- LONCAPAACCESSCONTROLERRORSCREEN --><hr /><pre>");
651: if ($priv ne '') {
652: $r->print(&mt('Access : ').&Apache::lonnet::plaintext($priv)."\n");
653: }
654: if ($fn ne '') {
655: $r->print(&mt('Resource: ').&Apache::lonenc::check_encrypt($fn)."\n");
656: }
657: if ($msg ne '') {
658: $r->print(&mt('Action : ').$msg."\n");
659: }
660: $r->print("</pre><hr />");
661: my $url=$fn;
662: my $last;
663: if (tie(my %hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
664: &GDBM_READER(),0640)) {
665: $last=$hash{'last_known'};
666: untie(%hash);
667: }
668: if ($last) { $fn.='?symb='.&escape($last); }
669:
670: &Apache::londocs::changewarning($r,undef,'You have modified your course recently, [_1] may fix this access problem.',
671: &Apache::lonenc::check_encrypt($fn));
672: } else {
673: if ($env{'user.error.msg'}) {
674: if ($reinit) {
675: $r->print(
676: '<h3><span class="LC_error">'.
677: &mt('As your session file for the course or community has expired, you will need to re-select it.').'</span></h3>');
678: } else {
679: $r->print(
680: '<h3><span class="LC_error">'.
681: &mt('You need to choose another user role or enter a specific course or community for this function.').
682: '</span></h3>');
683: }
684: }
685: }
686: # -------------------------------------------------------- Choice or no choice?
687: if ($nochoose) {
688: $r->print("<h2>".&mt('Sorry ...')."</h2>\n<span class='LC_error'>".
689: &mt('This action is currently not authorized.').'</span>'.
690: &Apache::loncommon::end_page());
691: return OK;
692: } else {
693: if (($ENV{'REDIRECT_QUERY_STRING'}) && ($fn)) {
694: $fn.='?'.$ENV{'REDIRECT_QUERY_STRING'};
695: }
696: $r->print('<form method="post" name="rolechoice" action="'.(($fn)?$fn:$r->uri).'">');
697: $r->print('<input type="hidden" name="orgurl" value="'.$fn.'" />');
698: $r->print('<input type="hidden" name="selectrole" value="1" />');
699: $r->print('<input type="hidden" name="newrole" value="" />');
700: }
701:
702: my (%roletext,%sortrole,%roleclass,%futureroles,%timezones);
703: my ($countactive,$countfuture,$inrole,$possiblerole) =
704: &gather_roles($then,$refresh,$now,$reinit,$nochoose,\%roletext,\%sortrole,\%roleclass,
705: \%futureroles,\%timezones);
706:
707: $refresh = $now;
708: &Apache::lonnet::appenv({'user.refresh.time' => $refresh});
709: if ($env{'user.adv'}) {
710: $r->print('<p><label><input type="checkbox" name="showall"');
711: if ($env{'form.showall'}) { $r->print(' checked="checked" '); }
712: $r->print(' />'.&mt('Show all roles').'</label>'
713: .' <input type="submit" value="'.&mt('Update display').'" />'
714: .'</p>');
715: } else {
716: if ($countactive > 0) {
717: &queued_selfenrollment($r);
718: my $domdesc = &Apache::lonnet::domain($env{'user.domain'},'description');
719: my $esc_dom = &HTML::Entities::encode($env{'user.domain'},'"<>&');
720: $r->print(
721: '<p>'
722: .&mt('[_1]Visit the [_2]Course/Community Catalog[_3]'
723: .' to view all [_4] LON-CAPA courses and communities.'
724: ,'<b>'
725: ,'<a href="/adm/coursecatalog?showdom='.$esc_dom.'">'
726: ,'</a></b>',$domdesc)
727: .'<br />'
728: .&mt('If a course or community is [_1]not[_2] in your list of current courses and communities below,'
729: .' you may be able to enroll if self-enrollment is permitted.'
730: ,'<b>','</b>')
731: .'</p>'
732: );
733: }
734: }
735:
736: # No active roles
737: if ($countactive==0) {
738: if ($inrole) {
739: $r->print('<h2>'.&mt('Currently no additional roles, courses or communities').'</h2>');
740: } else {
741: $r->print('<h2>'.&mt('Currently no active roles, courses or communities').'</h2>');
742: }
743: &findcourse_advice($r);
744: &requestcourse_advice($r);
745: $r->print('</form>');
746: if ($countfuture) {
747: $r->print(&mt('The following [quant,_1,role,roles] will become active in the future:',$countfuture));
748: my $doheaders = &roletable_headers($r,\%roleclass,\%sortrole,
749: $nochoose);
750: &print_rolerows($r,$doheaders,\%roleclass,\%sortrole,\%dcroles,
751: \%roletext);
752: my $tremark='';
753: my $tbg;
754: if ($env{'request.role'} eq 'cm') {
755: $tbg="LC_roles_selected";
756: $tremark=&mt('Currently selected.').' ';
757: } else {
758: $tbg="LC_roles_is";
759: }
760: $r->print(&Apache::loncommon::start_data_table_row()
761: .'<td class="'.$tbg.'"> </td>'
762: .'<td colspan="3">'
763: .&mt('No role specified')
764: .'</td>'
765: .'<td>'.$tremark.' </td>'
766: .&Apache::loncommon::end_data_table_row()
767: );
768:
769: $r->print(&Apache::loncommon::end_data_table());
770: }
771: $r->print(&Apache::loncommon::end_page());
772: return OK;
773: } elsif ($countactive==1) { # Is there only one choice?
774: my $needs_switchserver;
775: if ($env{'user.author'}) {
776: $needs_switchserver = &check_needs_switchserver($possiblerole);
777: }
778: if ((!$needs_switchserver) && ($env{'request.role'} eq 'cm')) {
779: $r->print('<h3>'.&mt('Please stand by.').'</h3>'.
780: '<input type="hidden" name="'.$possiblerole.'" value="1" />'.
781: '<noscript><br /><input type="submit" name="submit" value="'.&mt('Continue').'" /></noscript>');
782: $r->print("</form>\n");
783: $r->rflush();
784: $r->print('<script type="text/javascript">document.forms.rolechoice.submit();</script>');
785: $r->print(&Apache::loncommon::end_page());
786: return OK;
787: }
788: if ($needs_switchserver) {
789: $r->print("<h2>".&mt('Server Switch Required')."</h2>\n".
790: &mt('Construction Space access is only available from '.
791: 'the home server of the corresponding Author.').'<br />'.
792: &mt("Click the 'Switch Server' link to go there.").'<br />');
793: }
794: }
795: # ----------------------------------------------------------------------- Table
796: unless ((!&Apache::loncommon::show_course()) || ($nochoose) || ($countactive==1)) {
797: $r->print("<h2>".&mt('Select a Course to Enter')."</h2>\n");
798: }
799: if ($env{'form.destinationurl'}) {
800: $r->print('<input type="hidden" name="destinationurl" value="'.
801: $env{'form.destinationurl'}.'" />');
802: if ($env{'form.destsymb'} ne '') {
803: $r->print('<input type="hidden" name="destsymb" value="'.
804: $env{'form.destsymb'}.'" />');
805: }
806: }
807: my $doheaders = &roletable_headers($r,\%roleclass,\%sortrole,$nochoose);
808: if ($env{'environment.recentroles'}) {
809: my %recent_roles =
810: &Apache::lonhtmlcommon::get_recent('roles',$env{'environment.recentrolesn'});
811: my $output='';
812: foreach (sort(keys(%recent_roles))) {
813: if (ref($roletext{'user.role.'.$_}) eq 'ARRAY') {
814: $output.= &Apache::loncommon::start_data_table_row().
815: $roletext{'user.role.'.$_}->[0].
816: &Apache::loncommon::end_data_table_row().
817: &Apache::loncommon::continue_data_table_row().
818: $roletext{'user.role.'.$_}->[1].
819: &Apache::loncommon::end_data_table_row();
820: if ($_ =~ m-dc\./($match_domain)/-
821: && $dcroles{$1}) {
822: $output .= &adhoc_roles_row($1,'recent');
823: }
824: } elsif ($numdc > 0) {
825: unless ($_ =~/^error\:/) {
826: $output.=&display_cc_role('user.role.'.$_);
827: }
828: }
829: }
830: if ($output) {
831: $r->print(&Apache::loncommon::start_data_table_empty_row()
832: .'<td align="center" colspan="5">'
833: .$recent
834: .'</td>'
835: .&Apache::loncommon::end_data_table_empty_row()
836: );
837: $r->print($output);
838: $doheaders ++;
839: }
840: }
841:
842: if ($numdc > 0) {
843: $r->print(&coursepick_jscript());
844: $r->print(&Apache::loncommon::coursebrowser_javascript().
845: &Apache::loncommon::authorbrowser_javascript());
846: }
847: &print_rolerows($r,$doheaders,\%roleclass,\%sortrole,\%dcroles,\%roletext);
848: if ($countactive > 1) {
849: my $tremark='';
850: my $tbg;
851: if ($env{'request.role'} eq 'cm') {
852: $tbg="LC_roles_selected";
853: $tremark=&mt('Currently selected.').' ';
854: } else {
855: $tbg="LC_roles_is";
856: }
857: $r->print(&Apache::loncommon::start_data_table_row());
858: unless ($nochoose) {
859: if ($env{'request.role'} ne 'cm') {
860: $r->print('<td class="'.$tbg.'"><input type="submit" value="'.
861: &mt('Select').'" name="cm" /></td>');
862: } else {
863: $r->print('<td class="'.$tbg.'"> </td>');
864: }
865: }
866: $r->print('<td colspan="3">'
867: .&mt('No role specified')
868: .'</td>'
869: .'<td>'.$tremark.' </td>'
870: .&Apache::loncommon::end_data_table_row()
871: );
872: }
873: $r->print(&Apache::loncommon::end_data_table());
874: unless ($nochoose) {
875: $r->print("</form>\n");
876: }
877: # ------------------------------------------------------------ Privileges Info
878: if (($advanced) && (($env{'user.error.msg'}) || ($error))) {
879: $r->print('<hr /><h2>'.&mt('Current Privileges').'</h2>');
880: $r->print(&privileges_info());
881: }
882: $r->print(&Apache::lonnet::getannounce());
883: if ($advanced) {
884: my $esc_dom = &HTML::Entities::encode($env{'user.domain'},'"<>&');
885: $r->print('<p><small><i>'
886: .&mt('This LON-CAPA server is version [_1]',$r->dir_config('lonVersion'))
887: .'</i><br />'
888: .'<a href="/adm/logout">'.&mt('Logout').'</a> '
889: .'<a href="/adm/coursecatalog?showdom='.$esc_dom.'">'
890: .&mt('Course/Community Catalog')
891: .'</a></small></p>');
892: }
893: $r->print(&Apache::loncommon::end_page());
894: return OK;
895: }
896:
897: sub gather_roles {
898: my ($then,$refresh,$now,$reinit,$nochoose,$roletext,$sortrole,$roleclass,$futureroles,$timezones) = @_;
899: my ($countactive,$countfuture,$inrole,$possiblerole) = (0,0,0,'');
900: my $advanced = $env{'user.adv'};
901: my $tryagain = $env{'form.tryagain'};
902: foreach my $envkey (sort(keys(%env))) {
903: my $button = 1;
904: my $switchserver='';
905: my ($role_text,$role_text_end,$sortkey);
906: if ($envkey=~/^user\.role\./) {
907: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend);
908: &Apache::lonnet::role_status($envkey,$then,$refresh,$now,\$role,\$where,
909: \$trolecode,\$tstatus,\$tstart,\$tend);
910: next if (!defined($role) || $role eq '' || $role =~ /^gr/);
911: my $timezone = &role_timezone($where,$timezones);
912: $tremark='';
913: $tpstart=' ';
914: $tpend=' ';
915: if ($tstart) {
916: $tpstart=&Apache::lonlocal::locallocaltime($tstart,$timezone);
917: }
918: if ($tend) {
919: $tpend=&Apache::lonlocal::locallocaltime($tend,$timezone);
920: }
921: if ($env{'request.role'} eq $trolecode) {
922: $tstatus='selected';
923: }
924: my $tbg;
925: if (($tstatus eq 'is')
926: || ($tstatus eq 'selected')
927: || ($tstatus eq 'future')
928: || ($env{'form.showall'})) {
929: if ($tstatus eq 'is') {
930: $tbg='LC_roles_is';
931: $possiblerole=$trolecode;
932: $countactive++;
933: } elsif ($tstatus eq 'future') {
934: $tbg='LC_roles_future';
935: $button=0;
936: $futureroles->{$trolecode} = $tstart.':'.$tend;
937: $countfuture ++;
938: } elsif ($tstatus eq 'expired') {
939: $tbg='LC_roles_expired';
940: $button=0;
941: } elsif ($tstatus eq 'will_not') {
942: $tbg='LC_roles_will_not';
943: $tremark.=&mt('Expired after logout.').' ';
944: } elsif ($tstatus eq 'selected') {
945: $tbg='LC_roles_selected';
946: $inrole=1;
947: $countactive++;
948: $tremark.=&mt('Currently selected.').' ';
949: }
950: my $trole;
951: if ($role =~ /^cr\//) {
952: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$role);
953: if ($tremark) { $tremark.='<br />'; }
954: $tremark.=&mt('Defined by [_1] at [_2].',$rauthor,$rdomain);
955: }
956: $trole=Apache::lonnet::plaintext($role);
957: my $ttype;
958: my $twhere;
959: my ($tdom,$trest,$tsection)=
960: split(/\//,Apache::lonnet::declutter($where));
961: # First, Co-Authorship roles
962: if (($role eq 'ca') || ($role eq 'aa')) {
963: my $home = &Apache::lonnet::homeserver($trest,$tdom);
964: my $allowed=0;
965: my @ids=&Apache::lonnet::current_machine_ids();
966: foreach my $id (@ids) { if ($id eq $home) { $allowed=1; } }
967: if (!$allowed) {
968: $button=0;
969: $switchserver='otherserver='.$home.'&role='.$trolecode;
970: }
971: #next if ($home eq 'no_host');
972: $home = &Apache::lonnet::hostname($home);
973: $ttype='Construction Space';
974: $twhere=&mt('User').': '.$trest.'<br />'.&mt('Domain').
975: ': '.$tdom.'<br />'.
976: ' '.&mt('Server').': '.$home;
977: $env{'course.'.$tdom.'_'.$trest.'.description'}='ca';
978: $tremark.=&Apache::lonhtmlcommon::authorbombs('/res/'.$tdom.'/'.$trest.'/');
979: $sortkey=$role."$trest:$tdom";
980: } elsif ($role eq 'au') {
981: # Authors
982: my $home = &Apache::lonnet::homeserver
983: ($env{'user.name'},$env{'user.domain'});
984: my $allowed=0;
985: my @ids=&Apache::lonnet::current_machine_ids();
986: foreach my $id (@ids) { if ($id eq $home) { $allowed=1; } }
987: if (!$allowed) {
988: $button=0;
989: $switchserver='otherserver='.$home.'&role='.$trolecode;
990: }
991: #next if ($home eq 'no_host');
992: $home = &Apache::lonnet::hostname($home);
993: $ttype='Construction Space';
994: $twhere=&mt('Domain').': '.$tdom.'<br />'.&mt('Server').
995: ': '.$home;
996: $env{'course.'.$tdom.'_'.$trest.'.description'}='ca';
997: $tremark.=&Apache::lonhtmlcommon::authorbombs('/res/'.$tdom.'/'.$env{'user.name'}.'/');
998: $sortkey=$role;
999: } elsif ($trest) {
1000: my $tcourseid=$tdom.'_'.$trest;
1001: $ttype = &Apache::loncommon::course_type($tcourseid);
1002: $trole = &Apache::lonnet::plaintext($role,$ttype);
1003: if ($env{'course.'.$tcourseid.'.description'}) {
1004: $twhere=$env{'course.'.$tcourseid.'.description'};
1005: $sortkey=$role."\0".$tdom."\0".$twhere."\0".$envkey;
1006: unless ($twhere eq &mt('Currently not available')) {
1007: $twhere.=' <span class="LC_fontsize_small">'.
1008: &Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$trest,$tdom).
1009: '</span>';
1010: }
1011: } else {
1012: my %newhash=&Apache::lonnet::coursedescription($tcourseid);
1013: if (%newhash) {
1014: $sortkey=$role."\0".$tdom."\0".$newhash{'description'}.
1015: "\0".$envkey;
1016: $twhere=$newhash{'description'}.
1017: ' <span class="LC_fontsize_small">'.
1018: &Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$trest,$tdom).
1019: '</span>';
1020: $ttype = $newhash{'type'};
1021: $trole = &Apache::lonnet::plaintext($role,$ttype);
1022: } else {
1023: $twhere=&mt('Currently not available');
1024: $env{'course.'.$tcourseid.'.description'}=$twhere;
1025: $sortkey=$role."\0".$tdom."\0".$twhere."\0".$envkey;
1026: $ttype = 'Unavailable';
1027: }
1028: }
1029: if ($tsection) {
1030: $twhere.='<br />'.&mt('Section').': '.$tsection;
1031: }
1032: if ($role ne 'st') { $twhere.="<br />".&mt('Domain').":".$tdom; }
1033: } elsif ($tdom) {
1034: $ttype='Domain';
1035: $twhere=$tdom;
1036: $sortkey=$role.$twhere;
1037: } else {
1038: $ttype='System';
1039: $twhere=&mt('system wide');
1040: $sortkey=$role.$twhere;
1041: }
1042: ($role_text,$role_text_end) =
1043: &build_roletext($trolecode,$tdom,$trest,$tstatus,$tryagain,
1044: $advanced,$tremark,$tbg,$trole,$twhere,$tpstart,
1045: $tpend,$nochoose,$button,$switchserver,$reinit);
1046: $roletext->{$envkey}=[$role_text,$role_text_end];
1047: if (!$sortkey) {$sortkey=$twhere."\0".$envkey;}
1048: $sortrole->{$sortkey}=$envkey;
1049: $roleclass->{$envkey}=$ttype;
1050: }
1051: }
1052: }
1053: return ($countactive,$countfuture,$inrole,$possiblerole);
1054: }
1055:
1056: sub role_timezone {
1057: my ($where,$timezones) = @_;
1058: my $timezone;
1059: if (ref($timezones) eq 'HASH') {
1060: if ($where =~ m{^/($match_domain)/($match_courseid)}) {
1061: my $cdom = $1;
1062: my $cnum = $2;
1063: if ($cdom && $cnum) {
1064: if (!exists($timezones->{$cdom.'_'.$cnum})) {
1065: my %timehash =
1066: &Apache::lonnet::get('environment',['timezone'],$cdom,$cnum);
1067: if ($timehash{'timezone'} eq '') {
1068: if (!exists($timezones->{$cdom})) {
1069: my %domdefaults =
1070: &Apache::lonnet::get_domain_defaults($cdom);
1071: if ($domdefaults{'timezone_def'} eq '') {
1072: $timezones->{$cdom} = 'local';
1073: } else {
1074: $timezones->{$cdom} = $domdefaults{'timezone_def'};
1075: }
1076: }
1077: $timezones->{$cdom.'_'.$cnum} = $timezones->{$cdom};
1078: } else {
1079: $timezones->{$cdom.'_'.$cnum} =
1080: &Apache::lonlocal::gettimezone($timehash{'timezone'});
1081: }
1082: }
1083: $timezone = $timezones->{$cdom.'_'.$cnum};
1084: }
1085: } else {
1086: my ($tdom) = ($where =~ m{^/($match_domain)});
1087: if ($tdom) {
1088: if (!exists($timezones->{$tdom})) {
1089: my %domdefaults = &Apache::lonnet::get_domain_defaults($tdom);
1090: if ($domdefaults{'timezone_def'} eq '') {
1091: $timezones->{$tdom} = 'local';
1092: } else {
1093: $timezones->{$tdom} = $domdefaults{'timezone_def'};
1094: }
1095: }
1096: $timezone = $timezones->{$tdom};
1097: }
1098: }
1099: if ($timezone eq 'local') {
1100: $timezone = undef;
1101: }
1102: }
1103: return $timezone;
1104: }
1105:
1106: sub roletable_headers {
1107: my ($r,$roleclass,$sortrole,$nochoose) = @_;
1108: my $doheaders;
1109: if ((ref($sortrole) eq 'HASH') && (ref($roleclass) eq 'HASH')) {
1110: $r->print('<br />'
1111: .&Apache::loncommon::start_data_table()
1112: .&Apache::loncommon::start_data_table_header_row()
1113: );
1114: if (!$nochoose) { $r->print('<th> </th>'); }
1115: $r->print('<th>'.&mt('User Role').'</th>'
1116: .'<th>'.&mt('Extent').'</th>'
1117: .'<th>'.&mt('Start').'</th>'
1118: .'<th>'.&mt('End').'</th>'
1119: .&Apache::loncommon::end_data_table_header_row()
1120: );
1121: $doheaders=-1;
1122: my @roletypes = &roletypes();
1123: foreach my $type (@roletypes) {
1124: my $haverole=0;
1125: foreach my $which (sort {uc($a) cmp uc($b)} (keys(%{$sortrole}))) {
1126: if ($roleclass->{$sortrole->{$which}} =~ /^\Q$type\E/) {
1127: $haverole=1;
1128: }
1129: }
1130: if ($haverole) { $doheaders++; }
1131: }
1132: }
1133: return $doheaders;
1134: }
1135:
1136: sub roletypes {
1137: my @types = ('Domain','Construction Space','Course','Community','Unavailable','System');
1138: return @types;
1139: }
1140:
1141: sub print_rolerows {
1142: my ($r,$doheaders,$roleclass,$sortrole,$dcroles,$roletext) = @_;
1143: if ((ref($roleclass) eq 'HASH') && (ref($sortrole) eq 'HASH')) {
1144: my @types = &roletypes();
1145: foreach my $type (@types) {
1146: my $output;
1147: foreach my $which (sort {uc($a) cmp uc($b)} (keys(%{$sortrole}))) {
1148: if ($roleclass->{$sortrole->{$which}} =~ /^\Q$type\E/) {
1149: if (ref($roletext) eq 'HASH') {
1150: if (ref($roletext->{$sortrole->{$which}}) eq 'ARRAY') {
1151: $output.= &Apache::loncommon::start_data_table_row().
1152: $roletext->{$sortrole->{$which}}->[0].
1153: &Apache::loncommon::end_data_table_row().
1154: &Apache::loncommon::continue_data_table_row().
1155: $roletext->{$sortrole->{$which}}->[1].
1156: &Apache::loncommon::end_data_table_row();
1157: }
1158: if ($sortrole->{$which} =~ m-dc\./($match_domain)/-) {
1159: if (ref($dcroles) eq 'HASH') {
1160: if ($dcroles->{$1}) {
1161: $output .= &adhoc_roles_row($1,'');
1162: }
1163: }
1164: }
1165: }
1166: }
1167: }
1168: if ($output) {
1169: if ($doheaders > 0) {
1170: $r->print(&Apache::loncommon::start_data_table_empty_row()
1171: .'<td align="center" colspan="5">'
1172: .&mt($type)
1173: .'</td>'
1174: .&Apache::loncommon::end_data_table_empty_row()
1175: );
1176: }
1177: $r->print($output);
1178: }
1179: }
1180: }
1181: }
1182:
1183: sub findcourse_advice {
1184: my ($r) = @_;
1185: my $domdesc = &Apache::lonnet::domain($env{'user.domain'},'description');
1186: my $esc_dom = &HTML::Entities::encode($env{'user.domain'},'"<>&');
1187: if (&Apache::lonnet::auto_run(undef,$env{'user.domain'})) {
1188: $r->print(&mt('If you were expecting to see an active role listed for a particular course in the [_1] domain, it may be missing for one of the following reasons:',$domdesc).'
1189: <ul>
1190: <li>'.&mt('The course has yet to be created.').'</li>
1191: <li>'.&mt('Automatic enrollment of registered students has not been enabled for the course.').'</li>
1192: <li>'.&mt('You are in a section of course for which automatic enrollment in the corresponding LON-CAPA course is not active.').'</li>
1193: <li>'.&mt('The start date for automated enrollment has yet to be reached.').'</li>
1194: <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>
1195: </ul>');
1196: } else {
1197: $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 />');
1198: }
1199: $r->print('<h3>'.&mt('Self-Enrollment').'</h3>'.
1200: '<p>'.&mt('The [_1]Course/Community Catalog[_2] provides information about all [_3] classes for which LON-CAPA courses have been created, as well as any communities in the domain.','<a href="/adm/coursecatalog?showdom='.$esc_dom.'">','</a>',$domdesc).'<br />');
1201: $r->print(&mt('You can search for courses and communities which permit self-enrollment, if you would like to enroll in one.').'</p>');
1202: &queued_selfenrollment($r);
1203: return;
1204: }
1205:
1206: sub requestcourse_advice {
1207: my ($r) = @_;
1208: my $domdesc = &Apache::lonnet::domain($env{'user.domain'},'description');
1209: my $esc_dom = &HTML::Entities::encode($env{'user.domain'},'"<>&');
1210: my (%can_request,%request_doms);
1211: &Apache::lonnet::check_can_request($env{'user.domain'},\%can_request,\%request_doms);
1212: if (keys(%request_doms) > 0) {
1213: my ($types,$typename) = &Apache::loncommon::course_types();
1214: if ((ref($types) eq 'ARRAY') && (ref($typename) eq 'HASH')) {
1215: $r->print('<h3>'.&mt('Request creation of a course or community').'</h3>'.
1216: '<p>'.&mt('You have rights to request the creation of courses and/or communities in the following domain(s):').'<ul>');
1217: my (@reqdoms,@reqtypes);
1218: foreach my $type (sort(keys(%request_doms))) {
1219: push(@reqtypes,$type);
1220: if (ref($request_doms{$type}) eq 'ARRAY') {
1221: my $domstr = join(', ',map { &Apache::lonnet::domain($_) } sort(@{$request_doms{$type}}));
1222: $r->print(
1223: '<li>'
1224: .&mt('[_1]'.$typename->{$type}.'[_2] in domain: [_3]',
1225: '<i>',
1226: '</i>',
1227: '<b>'.$domstr.'</b>')
1228: .'</li>'
1229: );
1230: foreach my $dom (@{$request_doms{$type}}) {
1231: unless (grep(/^\Q$dom\E/,@reqdoms)) {
1232: push(@reqdoms,$dom);
1233: }
1234: }
1235: }
1236: }
1237: my @showtypes;
1238: foreach my $type (@{$types}) {
1239: if (grep(/^\Q$type\E$/,@reqtypes)) {
1240: push(@showtypes,$type);
1241: }
1242: }
1243: my $requrl = '/adm/requestcourse';
1244: if (@reqdoms == 1) {
1245: $requrl .= '?showdom='.$reqdoms[0];
1246: }
1247: if (@showtypes > 0) {
1248: $requrl.=(($requrl=~/\?/)?'&':'?').'crstype='.$showtypes[0];
1249: }
1250: if (@reqdoms == 1 || @showtypes > 0) {
1251: $requrl .= '&state=crstype&action=new';
1252: }
1253: $r->print('</ul>'.&mt('Use the [_1]request form[_2] to submit a request for creation of a new course or community.','<a href="'.$requrl.'">','</a>').'</p>');
1254: }
1255: }
1256: return;
1257: }
1258:
1259: sub queued_selfenrollment {
1260: my ($r) = @_;
1261: my %selfenrollrequests = &Apache::lonnet::dump('selfenrollrequests');
1262: my %reqs_by_date;
1263: foreach my $item (keys(%selfenrollrequests)) {
1264: if (ref($selfenrollrequests{$item}) eq 'HASH') {
1265: if ($selfenrollrequests{$item}{'status'} eq 'request') {
1266: if ($selfenrollrequests{$item}{'timestamp'}) {
1267: push(@{$reqs_by_date{$selfenrollrequests{$item}{'timestamp'}}},$item);
1268: }
1269: }
1270: }
1271: }
1272: if (keys(%reqs_by_date)) {
1273: my $rolename = &Apache::lonnet::plaintext('st');
1274: $r->print('<b>'.&mt('Enrollment requests pending Course Coordinator approval').'</b><br />'.
1275: &Apache::loncommon::start_data_table().
1276: &Apache::loncommon::start_data_table_header_row().
1277: '<th>'.&mt('Date requested').'</th><th>'.&mt('Course title').'</th>'.
1278: '<th>'.&mt('User role').'</th><th>'.&mt('Section').'</th>'.
1279: &Apache::loncommon::end_data_table_header_row());
1280: my @sorted = sort { $a <=> $b } (keys(%reqs_by_date));
1281: foreach my $item (@sorted) {
1282: if (ref($reqs_by_date{$item}) eq 'ARRAY') {
1283: foreach my $crs (@{$reqs_by_date{$item}}) {
1284: my %courseinfo = &Apache::lonnet::coursedescription($crs);
1285: my $usec = $selfenrollrequests{$crs}{'section'};
1286: if ($usec eq '') {
1287: $usec = &mt('No section');
1288: }
1289: $r->print(&Apache::loncommon::start_data_table_row().
1290: '<td>'.&Apache::lonlocal::locallocaltime($item).'</td>'.
1291: '<td>'.$courseinfo{'description'}.'</td>'.
1292: '<td>'.$rolename.'</td><td>'.$usec.'</td>'.
1293: &Apache::loncommon::end_data_table_row());
1294: }
1295: }
1296: }
1297: $r->print(&Apache::loncommon::end_data_table());
1298: }
1299: return;
1300: }
1301:
1302: sub privileges_info {
1303: my ($which) = @_;
1304: my $output;
1305:
1306: $which ||= $env{'request.role'};
1307:
1308: foreach my $envkey (sort(keys(%env))) {
1309: next if ($envkey!~/^user\.priv\.\Q$which\E\.(.*)/);
1310:
1311: my $where=$1;
1312: my $ttype;
1313: my $twhere;
1314: my (undef,$tdom,$trest,$tsec)=split(m{/},$where);
1315: if ($trest) {
1316: if ($env{'course.'.$tdom.'_'.$trest.'.description'} eq 'ca') {
1317: $ttype='Construction Space';
1318: $twhere='User: '.$trest.', Domain: '.$tdom;
1319: } else {
1320: $ttype= &Apache::loncommon::course_type($tdom.'_'.$trest);
1321: $twhere=$env{'course.'.$tdom.'_'.$trest.'.description'};
1322: if ($tsec) {
1323: my $sec_type = 'Section';
1324: if (exists($env{"user.role.gr.$where"})) {
1325: $sec_type = 'Group';
1326: }
1327: $twhere.=' ('.$sec_type.': '.$tsec.')';
1328: }
1329: }
1330: } elsif ($tdom) {
1331: $ttype='Domain';
1332: $twhere=$tdom;
1333: } else {
1334: $ttype='System';
1335: $twhere='/';
1336: }
1337: $output .= "\n<h3>".&mt($ttype).': '.$twhere.'</h3>'."\n<ul>";
1338: foreach my $priv (sort(split(/:/,$env{$envkey}))) {
1339: next if (!$priv);
1340:
1341: my ($prv,$restr)=split(/\&/,$priv);
1342: my $trestr='';
1343: if ($restr ne 'F') {
1344: $trestr.=' ('.
1345: join(', ',
1346: map { &Apache::lonnet::plaintext($_) }
1347: (split('',$restr))).') ';
1348: }
1349: $output .= "\n\t".
1350: '<li>'.&Apache::lonnet::plaintext($prv).$trestr.'</li>';
1351: }
1352: $output .= "\n".'</ul>';
1353: }
1354: return $output;
1355: }
1356:
1357: sub build_roletext {
1358: my ($trolecode,$tdom,$trest,$tstatus,$tryagain,$advanced,$tremark,$tbg,$trole,$twhere,$tpstart,$tpend,$nochoose,$button,$switchserver,$reinit) = @_;
1359: my ($roletext,$roletext_end);
1360: my $is_dc=($trolecode =~ m/^dc\./);
1361: my $rowspan=($is_dc) ? ''
1362: : ' rowspan="2" ';
1363:
1364: unless ($nochoose) {
1365: my $buttonname=$trolecode;
1366: $buttonname=~s/\W//g;
1367: if (!$button) {
1368: if ($switchserver) {
1369: $roletext.='<td'.$rowspan.' class="'.$tbg.'">'
1370: .'<a href="/adm/switchserver?'.$switchserver.'">'
1371: .&mt('Switch Server')
1372: .'</a></td>';
1373: } else {
1374: $roletext.=('<td'.$rowspan.' class="'.$tbg.'"> </td>');
1375: }
1376: } elsif ($tstatus eq 'is') {
1377: $roletext.='<td'.$rowspan.' class="'.$tbg.'">'.
1378: '<input name="'.$buttonname.'" type="button" value="'.
1379: &mt('Select').'" onclick="javascript:enterrole(this.form,\''.
1380: $trolecode."','".$buttonname.'\');" /></td>';
1381: } elsif ($tryagain) {
1382: $roletext.=
1383: '<td'.$rowspan.' class="'.$tbg.'">'.
1384: '<input name="'.$buttonname.'" type="button" value="'.
1385: &mt('Try Selecting Again').'" onclick="javascript:enterrole(this.form,\''.
1386: $trolecode."','".$buttonname.'\');" /></td>';
1387: } elsif ($advanced) {
1388: $roletext.=
1389: '<td'.$rowspan.' class="'.$tbg.'">'.
1390: '<input name="'.$buttonname.'" type="button" value="'.
1391: &mt('Re-Initialize').'" onclick="javascript:enterrole(this.form,\''.
1392: $trolecode."','".$buttonname.'\');" /></td>';
1393: } elsif ($reinit) {
1394: $roletext.=
1395: '<td'.$rowspan.' class="'.$tbg.'">'.
1396: '<input name="'.$buttonname.'" type="button" value="'.
1397: &mt('Re-Select').'" onclick="javascript:enterrole(this.form,\''.
1398: $trolecode."','".$buttonname.'\');" /></td>';
1399: } else {
1400: $roletext.=
1401: '<td'.$rowspan.' class="'.$tbg.'">'.
1402: '<input name="'.$buttonname.'" type="button" value="'.
1403: &mt('Re-Select').'" onclick="javascript:enterrole(this.form,\''.
1404: $trolecode."','".$buttonname.'\');" /></td>';
1405: }
1406: }
1407: if ($trolecode !~ m/^(dc|ca|au|aa)\./) {
1408: $tremark.=&Apache::lonannounce::showday(time,1,
1409: &Apache::lonannounce::readcalendar($tdom.'_'.$trest));
1410: }
1411: $roletext.='<td>'.$trole.'</td>'
1412: .'<td>'.$twhere.'</td>'
1413: .'<td>'.$tpstart.'</td>'
1414: .'<td>'.$tpend.'</td>';
1415: if (!$is_dc) {
1416: $roletext_end = '<td colspan="4">'.
1417: $tremark.' '.
1418: '</td>';
1419: }
1420: return ($roletext,$roletext_end);
1421: }
1422:
1423: sub check_needs_switchserver {
1424: my ($possiblerole) = @_;
1425: my $needs_switchserver;
1426: my ($role,$where) = split(/\./,$possiblerole,2);
1427: my (undef,$tdom,$twho) = split(/\//,$where);
1428: my ($server_status,$home);
1429: if (($role eq 'ca') || ($role eq 'aa')) {
1430: ($server_status,$home) = &check_author_homeserver($twho,$tdom);
1431: } else {
1432: ($server_status,$home) = &check_author_homeserver($env{'user.name'},
1433: $env{'user.domain'});
1434: }
1435: if ($server_status eq 'switchserver') {
1436: $needs_switchserver = 1;
1437: }
1438: return $needs_switchserver;
1439: }
1440:
1441: sub check_author_homeserver {
1442: my ($uname,$udom)=@_;
1443: if (($uname eq '') || ($udom eq '')) {
1444: return ('fail','');
1445: }
1446: my $home = &Apache::lonnet::homeserver($uname,$udom);
1447: if (&Apache::lonnet::host_domain($home) ne $udom) {
1448: return ('fail',$home);
1449: }
1450: my @ids=&Apache::lonnet::current_machine_ids();
1451: if (grep(/^\Q$home\E$/,@ids)) {
1452: return ('ok',$home);
1453: } else {
1454: return ('switchserver',$home);
1455: }
1456: }
1457:
1458: sub check_fordc {
1459: my ($dcroles,$then) = @_;
1460: my $numdc = 0;
1461: if ($env{'user.adv'}) {
1462: foreach my $envkey (sort keys %env) {
1463: if ($envkey=~/^user\.role\.dc\.\/($match_domain)\/$/) {
1464: my $dcdom = $1;
1465: my $livedc = 1;
1466: my ($tstart,$tend)=split(/\./,$env{$envkey});
1467: if ($tstart && $tstart>$then) { $livedc = 0; }
1468: if ($tend && $tend <$then) { $livedc = 0; }
1469: if ($livedc) {
1470: $$dcroles{$dcdom} = $envkey;
1471: $numdc++;
1472: }
1473: }
1474: }
1475: }
1476: return $numdc;
1477: }
1478:
1479: sub adhoc_course_role {
1480: my ($refresh,$then) = @_;
1481: my ($cdom,$cnum,$crstype);
1482: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
1483: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
1484: $crstype = &Apache::loncommon::course_type();
1485: if (&check_forcc($cdom,$cnum,$refresh,$then,$crstype)) {
1486: my $setprivs;
1487: if (!defined($env{'user.role.'.$env{'form.switchrole'}})) {
1488: $setprivs = 1;
1489: } else {
1490: my ($start,$end) = split(/\./,$env{'user.role.'.$env{'form.switchrole'}});
1491: if (($start && ($start>$refresh || $start == -1)) ||
1492: ($end && $end<$then)) {
1493: $setprivs = 1;
1494: }
1495: }
1496: if ($setprivs) {
1497: if ($env{'form.switchrole'} =~ m-^(in|ta|ep|ad|st|cr)([\w/]*)\./\Q$cdom\E/\Q$cnum\E/?(\w*)$-) {
1498: my $role = $1;
1499: my $custom_role = $2;
1500: my $usec = $3;
1501: if ($role eq 'cr') {
1502: if ($custom_role =~ m-^/$match_domain/$match_username/\w+$-) {
1503: $role .= $custom_role;
1504: } else {
1505: return;
1506: }
1507: }
1508: my (%userroles,%newrole,%newgroups,%group_privs);
1509: my %cgroups =
1510: &Apache::lonnet::get_active_groups($env{'user.domain'},
1511: $env{'user.name'},$cdom,$cnum);
1512: foreach my $group (keys(%cgroups)) {
1513: $group_privs{$group} =
1514: $env{'user.priv.cc./'.$cdom.'/'.$cnum.'./'.$cdom.'/'.$cnum.'/'.$group};
1515: }
1516: $newgroups{'/'.$cdom.'/'.$cnum} = \%group_privs;
1517: my $area = '/'.$cdom.'/'.$cnum;
1518: my $spec = $role.'.'.$area;
1519: if ($usec ne '') {
1520: $spec .= '/'.$usec;
1521: $area .= '/'.$usec;
1522: }
1523: &Apache::lonnet::standard_roleprivs(\%newrole,$role,$cdom,$spec,$cnum,$area);
1524: &Apache::lonnet::set_userprivs(\%userroles,\%newrole,\%newgroups);
1525: my $adhocstart = $refresh-1;
1526: $userroles{'user.role.'.$spec} = $adhocstart.'.';
1527: &Apache::lonnet::appenv(\%userroles,[$role,'cm']);
1528: }
1529: }
1530: }
1531: return;
1532: }
1533:
1534: sub check_forcc {
1535: my ($cdom,$cnum,$refresh,$then,$crstype) = @_;
1536: my ($is_cc,$ccrole);
1537: if ($crstype eq 'Community') {
1538: $ccrole = 'co';
1539: } else {
1540: $ccrole = 'cc';
1541: }
1542: if ($cdom ne '' && $cnum ne '') {
1543: if (&Apache::lonnet::is_course($cdom,$cnum)) {
1544: my $envkey = 'user.role.'.$ccrole.'./'.$cdom.'/'.$cnum;
1545: if (defined($env{$envkey})) {
1546: $is_cc = 1;
1547: my ($tstart,$tend)=split(/\./,$env{$envkey});
1548: if ($tstart && $tstart>$refresh) { $is_cc = 0; }
1549: if ($tend && $tend <$then) { $is_cc = 0; }
1550: }
1551: }
1552: }
1553: return $is_cc;
1554: }
1555:
1556: sub courselink {
1557: my ($dcdom,$rowtype) = @_;
1558: my $courseform=&Apache::loncommon::selectcourse_link
1559: ('rolechoice','dccourse'.$rowtype.'_'.$dcdom,
1560: 'dcdomain'.$rowtype.'_'.$dcdom,'coursedesc'.$rowtype.'_'.
1561: $dcdom,$dcdom,undef,'Course/Community');
1562: my $hiddenitems = '<input type="hidden" name="dcdomain'.$rowtype.'_'.$dcdom.'" value="'.$dcdom.'" />'.
1563: '<input type="hidden" name="origdom'.$rowtype.'_'.$dcdom.'" value="'.$dcdom.'" />'.
1564: '<input type="hidden" name="dccourse'.$rowtype.'_'.$dcdom.'" value="" />'.
1565: '<input type="hidden" name="coursedesc'.$rowtype.'_'.$dcdom.'" value="" />';
1566: return $courseform.$hiddenitems;
1567: }
1568:
1569: sub coursepick_jscript {
1570: my %lt = &Apache::lonlocal::texthash(
1571: 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.",
1572: youc => 'You can only use this screen to select courses and communities in the current domain.',
1573: );
1574: my $verify_script = <<"END";
1575: <script type="text/javascript">
1576: // <![CDATA[
1577: function verifyCoursePick(caller) {
1578: var numbutton = getIndex(caller)
1579: var pickedCourse = document.rolechoice.elements[numbutton+4].value
1580: var pickedDomain = document.rolechoice.elements[numbutton+2].value
1581: if (document.rolechoice.elements[numbutton+2].value == document.rolechoice.elements[numbutton+3].value) {
1582: if (pickedCourse != '') {
1583: if (numbutton != -1) {
1584: var courseTarget = "cc./"+pickedDomain+"/"+pickedCourse
1585: document.rolechoice.elements[numbutton+1].name = courseTarget
1586: document.rolechoice.submit()
1587: }
1588: }
1589: else {
1590: alert("$lt{'plsu'}");
1591: }
1592: }
1593: else {
1594: alert("$lt{'youc'}")
1595: }
1596: }
1597: function getIndex(caller) {
1598: for (var i=0;i<document.rolechoice.elements.length;i++) {
1599: if (document.rolechoice.elements[i] == caller) {
1600: return i;
1601: }
1602: }
1603: return -1;
1604: }
1605: // ]]>
1606: </script>
1607: END
1608: return $verify_script;
1609: }
1610:
1611: sub coauthorlink {
1612: my ($dcdom,$rowtype) = @_;
1613: my $coauthorform=&Apache::loncommon::selectauthor_link('rolechoice',$dcdom);
1614: my $hiddenitems = '<input type="hidden" name="adhoccauname'.$rowtype.'_'.$dcdom.'" value="" />';
1615: return $coauthorform.$hiddenitems;
1616: }
1617:
1618: sub display_cc_role {
1619: my $rolekey = shift;
1620: my ($roletext,$roletext_end);
1621: my $advanced = $env{'user.adv'};
1622: my $tryagain = $env{'form.tryagain'};
1623: unless ($rolekey =~/^error\:/) {
1624: if ($rolekey =~ m{^user\.role\.(cc|co)\./($match_domain)/($match_courseid)$}) {
1625: my $ccrole = $1;
1626: my $tcourseid = $2.'_'.$3;
1627: my $trolecode = $1.'./'.$2.'/'.$3;
1628: my $twhere;
1629: my $ttype;
1630: my $tbg='LC_roles_is';
1631: my %newhash=&Apache::lonnet::coursedescription($tcourseid);
1632: if (%newhash) {
1633: $twhere=$newhash{'description'}.
1634: ' <span style="LC_fontsize_small">'.
1635: &Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$2,$1).
1636: '</span>';
1637: $ttype = $newhash{'type'};
1638: } else {
1639: $twhere=&mt('Currently not available');
1640: $env{'course.'.$tcourseid.'.description'}=$twhere;
1641: }
1642: my $trole = &Apache::lonnet::plaintext($ccrole,$ttype);
1643: $twhere.="<br />".&mt('Domain').":".$1;
1644: ($roletext,$roletext_end) = &build_roletext($trolecode,$1,$2,'is',$tryagain,$advanced,'',$tbg,$trole,$twhere,'','','',1,'');
1645: }
1646: }
1647: return ($roletext,$roletext_end);
1648: }
1649:
1650: sub adhoc_roles_row {
1651: my ($dcdom,$rowtype) = @_;
1652: my $output = &Apache::loncommon::continue_data_table_row()
1653: .' <td colspan="5">'
1654: .&mt('[_1]Ad hoc[_2] roles in domain [_3] --'
1655: ,'<span class="LC_cusr_emph">','</span>',$dcdom)
1656: .' ';
1657: my $selectcclink = &courselink($dcdom,$rowtype);
1658: my $ccrole = &Apache::lonnet::plaintext('co',undef,undef,1);
1659: my $carole = &Apache::lonnet::plaintext('ca');
1660: my $selectcalink = &coauthorlink($dcdom,$rowtype);
1661: $output.=$ccrole.': '.$selectcclink
1662: .' | '.$carole.': '.$selectcalink
1663: .&Apache::loncommon::end_data_table_row();
1664: return $output;
1665: }
1666:
1667: sub recent_filename {
1668: my $area=shift;
1669: return 'nohist_recent_'.&escape($area);
1670: }
1671:
1672: sub courseloadpage {
1673: my ($courseid) = @_;
1674: my $startpage;
1675: my %entry_settings = &Apache::lonnet::get('nohist_whatsnew',
1676: [$courseid.':courseinit']);
1677: my ($tmp) = %entry_settings;
1678: unless ($tmp =~ /^error: 2 /) {
1679: $startpage = $entry_settings{$courseid.':courseinit'};
1680: }
1681: if ($startpage eq '') {
1682: if (exists($env{'environment.course_init_display'})) {
1683: $startpage = $env{'environment.course_init_display'};
1684: }
1685: }
1686: return $startpage;
1687: }
1688:
1689: 1;
1690: __END__
1691:
1692: =head1 NAME
1693:
1694: Apache::lonroles - User Roles Screen
1695:
1696: =head1 SYNOPSIS
1697:
1698: Invoked by /etc/httpd/conf/srm.conf:
1699:
1700: <Location /adm/roles>
1701: PerlAccessHandler Apache::lonacc
1702: SetHandler perl-script
1703: PerlHandler Apache::lonroles
1704: ErrorDocument 403 /adm/login
1705: ErrorDocument 500 /adm/errorhandler
1706: </Location>
1707:
1708: =head1 OVERVIEW
1709:
1710: =head2 Choosing Roles
1711:
1712: C<lonroles> is a handler that allows a user to switch roles in
1713: mid-session. LON-CAPA attempts to work with "No Role Specified", the
1714: default role that a user has before selecting a role, as widely as
1715: possible, but certain handlers for example need specification which
1716: course they should act on, etc. Both in this scenario, and when the
1717: handler determines via C<lonnet>'s C<&allowed> function that a certain
1718: action is not allowed, C<lonroles> is used as error handler. This
1719: allows the user to select another role which may have permission to do
1720: what they were trying to do. C<lonroles> can also be accessed via the
1721: B<CRS> button in the Remote Control.
1722:
1723: =begin latex
1724:
1725: \begin{figure}
1726: \begin{center}
1727: \includegraphics[width=0.45\paperwidth,keepaspectratio]{Sample_Roles_Screen}
1728: \caption{\label{Sample_Roles_Screen}Sample Roles Screen}
1729: \end{center}
1730: \end{figure}
1731:
1732: =end latex
1733:
1734: =head2 Role Initialization
1735:
1736: 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.
1737:
1738: =head1 INTRODUCTION
1739:
1740: This module enables a user to select what role he wishes to
1741: operate under (instructor, student, teaching assistant, course
1742: coordinator, etc). These roles are pre-established by the actions
1743: of upper-level users.
1744:
1745: This is part of the LearningOnline Network with CAPA project
1746: described at http://www.lon-capa.org.
1747:
1748: =head1 HANDLER SUBROUTINE
1749:
1750: This routine is called by Apache and mod_perl.
1751:
1752: =over 4
1753:
1754: =item *
1755:
1756: Roles Initialization (yes/no)
1757:
1758: =item *
1759:
1760: Get Error Message from Environment
1761:
1762: =item *
1763:
1764: Who is this?
1765:
1766: =item *
1767:
1768: Generate Page Output
1769:
1770: =item *
1771:
1772: Choice or no choice
1773:
1774: =item *
1775:
1776: Table
1777:
1778: =item *
1779:
1780: Privileges
1781:
1782: =back
1783:
1784: =cut
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