1: # The LearningOnline Network with CAPA
2: # User Roles Screen
3: #
4: # $Id: lonroles.pm,v 1.312 2015/06/09 21:22:44 damieng 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 REDIRECT);
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:
155: # Breadcrumbs
156: my $brcrum = [{'href' => $url,
157: 'text' => 'Switching Role'},];
158: my $start_page = &Apache::loncommon::start_page('Switching Role',undef,
159: {'redirect' => [1,$url],
160: 'bread_crumbs' => $brcrum,});
161: my $end_page = &Apache::loncommon::end_page();
162:
163: # Note to style police:
164: # This must only replace the spaces, nothing else, or it bombs elsewhere.
165: $url=~s/ /\%20/g;
166: $r->print(<<ENDREDIR);
167: $start_page
168: <p>$msg</p>
169: $end_page
170: ENDREDIR
171: return;
172: }
173:
174: sub error_page {
175: my ($r,$error,$dest)=@_;
176: &Apache::loncommon::content_type($r,'text/html');
177: &Apache::loncommon::no_cache($r);
178: $r->send_http_header;
179: return OK if $r->header_only;
180: # Breadcrumbs
181: my $brcrum = [{'href' => $dest,
182: 'text' => 'Problems during Course Initialization'},];
183: $r->print(&Apache::loncommon::start_page('Problems during Course Initialization',
184: undef,
185: {'bread_crumbs' => $brcrum,})
186: );
187: $r->print(
188: '<script type="text/javascript">'.
189: '// <![CDATA['.
190: &Apache::lonmenu::rawconfig().
191: '// ]]>'.
192: '</script>'.
193: '<p class="LC_error">'.&mt('The following problems occurred:').
194: '<br />'.
195: $error.
196: '</p><br /><a href="'.$dest.'">'.&mt('Continue').'</a>'
197: );
198: $r->print(&Apache::loncommon::end_page());
199: }
200:
201: sub handler {
202:
203: my $r = shift;
204:
205: # Check for critical messages and redirect if present.
206: my ($redirect,$url) = &Apache::loncommon::critical_redirect(300);
207: if ($redirect) {
208: &Apache::loncommon::content_type($r,'text/html');
209: $r->header_out(Location => $url);
210: return REDIRECT;
211: }
212:
213: my $now=time;
214: my $then=$env{'user.login.time'};
215: my $refresh=$env{'user.refresh.time'};
216: my $update=$env{'user.update.time'};
217: if (!$refresh) {
218: $refresh = $then;
219: }
220: if (!$update) {
221: $update = $then;
222: }
223:
224: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'});
225:
226: # -------------------------------------------------- Check if setting hot list
227: my $hotlist;
228: if ($env{'form.action'} eq 'verify_and_change_rolespref') {
229: $hotlist = &Apache::lonpreferences::verify_and_change_rolespref($r);
230: }
231:
232: # -------------------------------------------------------- Check for new roles
233: my $updateresult;
234: if ($env{'form.state'} eq 'doupdate') {
235: my $show_course=&Apache::loncommon::show_course();
236: my $checkingtxt;
237: if ($show_course) {
238: $checkingtxt = &mt('Checking for new courses ...');
239: } else {
240: $checkingtxt = &mt('Checking for new roles ...');
241: }
242: $updateresult = $checkingtxt;
243: $updateresult .= &update_session_roles();
244: &Apache::lonnet::appenv({'user.update.time' => $now});
245: $update = $now;
246: &Apache::loncoursequeueadmin::reqauthor_check();
247: }
248:
249: # -------------------------------------------------- Check for author requests
250: my $reqauthor;
251: if ($env{'form.state'} eq 'requestauthor') {
252: $reqauthor = &Apache::loncoursequeueadmin::process_reqauthor(\$update);
253: }
254:
255: my $envkey;
256: my %dcroles = ();
257: my $numdc = &check_fordc(\%dcroles,$update,$then);
258: my $loncaparev = $r->dir_config('lonVersion');
259:
260: # ================================================================== Roles Init
261: if ($env{'form.selectrole'}) {
262:
263: my $locknum=&Apache::lonnet::get_locks();
264: if ($locknum) { return 409; }
265:
266: if ($env{'form.newrole'}) {
267: $env{'form.'.$env{'form.newrole'}}=1;
268: }
269: if ($env{'request.course.id'}) {
270: # Check if user is CC trying to select a course role
271: if ($env{'form.switchrole'}) {
272: my $switch_is_active;
273: if (defined($env{'user.role.'.$env{'form.switchrole'}})) {
274: my ($start,$end) = split(/\./,$env{'user.role.'.$env{'form.switchrole'}});
275: if (!$end || $end > $now) {
276: if (!$start || $start < $update) {
277: $switch_is_active = 1;
278: }
279: }
280: }
281: unless ($switch_is_active) {
282: &adhoc_course_role($refresh,$update,$then);
283: }
284: }
285: my %temp=('logout_'.$env{'request.course.id'} => time);
286: &Apache::lonnet::put('email_status',\%temp);
287: &Apache::lonnet::delenv('user.state.'.$env{'request.course.id'});
288: }
289: &Apache::lonnet::appenv({"request.course.id" => '',
290: "request.course.fn" => '',
291: "request.course.uri" => '',
292: "request.course.sec" => '',
293: "request.course.tied" => '',
294: "request.course.timechecked" => '',
295: "request.role" => 'cm',
296: "request.role.adv" => $env{'user.adv'},
297: "request.role.domain" => $env{'user.domain'}});
298: # Check if user is a DC trying to enter a course or author space and needs privs to be created
299: if ($numdc > 0) {
300: foreach my $envkey (keys(%env)) {
301: # Is this an ad-hoc Coordinator role?
302: if (my ($ccrole,$domain,$coursenum) =
303: ($envkey =~ m-^form\.(cc|co)\./($match_domain)/($match_courseid)$-)) {
304: if ($dcroles{$domain}) {
305: if (&Apache::lonnet::check_adhoc_privs($domain,$coursenum,
306: $update,$refresh,$now,$ccrole)) {
307: &Apache::lonnet::appenv({"environment.internal.$domain.$coursenum.$ccrole.adhoc" => time});
308: }
309: }
310: last;
311: }
312: # Is this an ad-hoc CA-role?
313: if (my ($domain,$user) =
314: ($envkey =~ m-^form\.ca\./($match_domain)/($match_username)$-)) {
315: if (($domain eq $env{'user.domain'}) && ($user eq $env{'user.name'})) {
316: delete($env{$envkey});
317: $env{'form.au./'.$domain.'/'} = 1;
318: my ($server_status,$home) = &check_author_homeserver($user,$domain);
319: if ($server_status eq 'switchserver') {
320: my $trolecode = 'au./'.$domain.'/';
321: my $switchserver = '/adm/switchserver?otherserver='.$home.'&role='.$trolecode;
322: $r->internal_redirect($switchserver);
323: return OK;
324: }
325: last;
326: }
327: if (my ($castart,$caend) = ($env{'user.role.ca./'.$domain.'/'.$user} =~ /^(\d*)\.(\d*)$/)) {
328: if (((($castart) && ($castart < $now)) || !$castart) &&
329: ((!$caend) || (($caend) && ($caend > $now)))) {
330: my ($server_status,$home) = &check_author_homeserver($user,$domain);
331: if ($server_status eq 'switchserver') {
332: my $trolecode = 'ca./'.$domain.'/'.$user;
333: my $switchserver = '/adm/switchserver?otherserver='.$home.'&role='.$trolecode;
334: $r->internal_redirect($switchserver);
335: return OK;
336: }
337: last;
338: }
339: }
340: # Check if author blocked ca-access
341: my %blocked=&Apache::lonnet::get('environment',['domcoord.author'],$domain,$user);
342: if ($blocked{'domcoord.author'} eq 'blocked') {
343: delete($env{$envkey});
344: $env{'user.error.msg'}=':::1:User '.$user.' in domain '.$domain.' blocked domain coordinator access';
345: last;
346: }
347: if ($dcroles{$domain}) {
348: my ($server_status,$home) = &check_author_homeserver($user,$domain);
349: if (($server_status eq 'ok') || ($server_status eq 'switchserver')) {
350: &Apache::lonnet::check_adhoc_privs($domain,$user,$update,
351: $refresh,$now,'ca');
352: if ($server_status eq 'switchserver') {
353: my $trolecode = 'ca./'.$domain.'/'.$user;
354: my $switchserver = '/adm/switchserver?'
355: .'otherserver='.$home.'&role='.$trolecode;
356: $r->internal_redirect($switchserver);
357: return OK;
358: }
359: } else {
360: delete($env{$envkey});
361: }
362: } else {
363: delete($env{$envkey});
364: }
365: last;
366: }
367: }
368: }
369:
370: foreach $envkey (keys(%env)) {
371: next if ($envkey!~/^user\.role\./);
372: my ($where,$trolecode,$role,$tstatus,$tend,$tstart);
373: &Apache::lonnet::role_status($envkey,$update,$refresh,$now,\$role,\$where,
374: \$trolecode,\$tstatus,\$tstart,\$tend);
375: if ($env{'form.'.$trolecode}) {
376: if ($tstatus eq 'is') {
377: $where=~s/^\///;
378: my ($cdom,$cnum,$csec)=split(/\//,$where);
379: if (($cnum) && ($role ne 'ca') && ($role ne 'aa')) {
380: my $home = $env{'course.'.$cdom.'_'.$cnum.'.home'};
381: my @ids = &Apache::lonnet::current_machine_ids();
382: unless ($loncaparev eq '' && $home && grep(/^\Q$home\E$/,@ids)) {
383: my %curr_reqd_hash = &Apache::lonnet::userenvironment($cdom,$cnum,'internal.releaserequired');
384: if ($curr_reqd_hash{'internal.releaserequired'} ne '') {
385: my ($switchserver,$switchwarning) =
386: &Apache::loncommon::check_release_required($loncaparev,$cdom.'_'.$cnum,$trolecode,
387: $curr_reqd_hash{'internal.releaserequired'});
388: if ($switchwarning ne '' || $switchserver ne '') {
389: &Apache::loncommon::content_type($r,'text/html');
390: &Apache::loncommon::no_cache($r);
391: $r->send_http_header;
392: $r->print(&Apache::loncommon::check_release_result($switchwarning,$switchserver));
393: return OK;
394: }
395: }
396: }
397: }
398: # check for course groups
399: my %coursegroups = &Apache::lonnet::get_active_groups(
400: $env{'user.domain'},$env{'user.name'},$cdom, $cnum);
401: my $cgrps = join(':',keys(%coursegroups));
402:
403: # store role if recent_role list being kept
404: if ($env{'environment.recentroles'}) {
405: my %frozen_roles =
406: &Apache::lonhtmlcommon::get_recent_frozen('roles',$env{'environment.recentrolesn'});
407: &Apache::lonhtmlcommon::store_recent('roles',
408: $trolecode,' ',$frozen_roles{$trolecode});
409: }
410:
411:
412: # check for keyed access
413: if (($role eq 'st') &&
414: ($env{'course.'.$cdom.'_'.$cnum.'.keyaccess'} eq 'yes')) {
415: # who is key authority?
416: my $authdom=$cdom;
417: my $authnum=$cnum;
418: if ($env{'course.'.$cdom.'_'.$cnum.'.keyauth'}) {
419: ($authnum,$authdom)=
420: split(/:/,$env{'course.'.$cdom.'_'.$cnum.'.keyauth'});
421: }
422: # check with key authority
423: unless (&Apache::lonnet::validate_access_key(
424: $env{'environment.key.'.$cdom.'_'.$cnum},
425: $authdom,$authnum)) {
426: # there is no valid key
427: if ($env{'form.newkey'}) {
428: # student attempts to register a new key
429: &Apache::loncommon::content_type($r,'text/html');
430: &Apache::loncommon::no_cache($r);
431: $r->send_http_header;
432: my $swinfo=&Apache::lonmenu::rawconfig();
433: my $start_page=&Apache::loncommon::start_page
434: ('Verifying Access Key to Unlock this Course');
435: my $end_page=&Apache::loncommon::end_page();
436: my $buttontext=&mt('Enter Course');
437: my $message=&mt('Successfully registered key');
438: my $assignresult=
439: &Apache::lonnet::assign_access_key(
440: $env{'form.newkey'},
441: $authdom,$authnum,
442: $cdom,$cnum,
443: $env{'user.domain'},
444: $env{'user.name'},
445: &mt('Assigned from [_1] at [_2] for [_3]'
446: ,$ENV{'REMOTE_ADDR'}
447: ,&Apache::lonlocal::locallocaltime()
448: ,$trolecode)
449: );
450: unless ($assignresult eq 'ok') {
451: $assignresult=~s/^error\:\s*//;
452: $message=&mt($assignresult).
453: '<br /><a href="/adm/logout">'.
454: &mt('Logout').'</a>';
455: $buttontext=&mt('Re-Enter Key');
456: }
457: $r->print(<<ENDENTEREDKEY);
458: $start_page
459: <script type="text/javascript">
460: // <![CDATA[
461: $swinfo
462: // ]]>
463: </script>
464: <form action="" method="post">
465: <input type="hidden" name="selectrole" value="1" />
466: <input type="hidden" name="$trolecode" value="1" />
467: <span class="LC_fontsize_large">$message</span><br />
468: <input type="submit" value="$buttontext" />
469: </form>
470: $end_page
471: ENDENTEREDKEY
472: return OK;
473: } else {
474: # print form to enter a new key
475: &Apache::loncommon::content_type($r,'text/html');
476: &Apache::loncommon::no_cache($r);
477: $r->send_http_header;
478: my $swinfo=&Apache::lonmenu::rawconfig();
479: my $start_page=&Apache::loncommon::start_page
480: ('Enter Access Key to Unlock this Course');
481: my $end_page=&Apache::loncommon::end_page();
482: $r->print(<<ENDENTERKEY);
483: $start_page
484: <script type="text/javascript">
485: // <![CDATA[
486: $swinfo
487: // ]]>
488: </script>
489: <form action="" method="post">
490: <input type="hidden" name="selectrole" value="1" />
491: <input type="hidden" name="$trolecode" value="1" />
492: <input type="text" size="20" name="newkey" value="$env{'form.newkey'}" />
493: <input type="submit" value="Enter key" />
494: </form>
495: $end_page
496: ENDENTERKEY
497: return OK;
498: }
499: }
500: }
501: &Apache::lonnet::log($env{'user.domain'},
502: $env{'user.name'},
503: $env{'user.home'},
504: "Role ".$trolecode);
505:
506: &Apache::lonnet::appenv(
507: {'request.role' => $trolecode,
508: 'request.role.domain' => $cdom,
509: 'request.course.sec' => $csec,
510: 'request.course.groups' => $cgrps});
511: my $tadv=0;
512:
513: if (($cnum) && ($role ne 'ca') && ($role ne 'aa')) {
514: my $msg;
515: my ($furl,$ferr)=
516: &Apache::lonuserstate::readmap($cdom.'/'.$cnum);
517: unless ($ferr) {
518: unless (($env{'form.switchrole'}) ||
519: ($env{"environment.internal.$cdom.$cnum.$role.adhoc"})) {
520: &Apache::lonnet::put('nohist_crslastlogin',
521: {$env{'user.name'}.':'.$env{'user.domain'}.
522: ':'.$csec.':'.$role => $now},$cdom,$cnum);
523: }
524: my ($feeds,$syllabus_time);
525: &Apache::lonrss::advertisefeeds($cnum,$cdom,undef,\$feeds);
526: &Apache::lonnet::appenv({'request.course.feeds' => $feeds});
527: &Apache::lonnet::get_numsuppfiles($cnum,$cdom,1);
528: unless ($env{'course.'.$cdom.'_'.$cnum.'.updatedsyllabus'}) {
529: unless (($env{'course.'.$cdom.'_'.$cnum.'.externalsyllabus'}) ||
530: ($env{'course.'.$cdom.'_'.$cnum.'.uploadedsyllabus'})) {
531: my %syllabus=&Apache::lonnet::dump('syllabus',$cdom,$cnum);
532: $syllabus_time = $syllabus{'uploaded.lastmodified'};
533: if ($syllabus_time) {
534: &Apache::lonnet::appenv({'request.course.syllabustime' => $syllabus_time});
535: }
536: }
537: }
538: }
539: if (($env{'form.orgurl'}) &&
540: ($env{'form.orgurl'}!~/^\/adm\/flip/) &&
541: ($env{'form.orgurl'} ne '/adm/roles')) {
542: my $dest=$env{'form.orgurl'};
543: if ($env{'form.symb'}) {
544: if ($dest =~ /\?/) {
545: $dest .= '&';
546: } else {
547: $dest .= '?';
548: }
549: $dest .= 'symb='.$env{'form.symb'};
550: }
551: if (&Apache::lonnet::allowed('adv') eq 'F') { $tadv=1; }
552: &Apache::lonnet::appenv({'request.role.adv'=>$tadv});
553: if (($ferr) && ($tadv)) {
554: &error_page($r,$ferr,$dest);
555: } else {
556: if ($dest =~ m{^/adm/coursedocs\?folderpath}) {
557: if ($env{'request.course.id'} eq $cdom.'_'.$cnum) {
558: my $chome = &Apache::lonnet::homeserver($cnum,$cdom);
559: &Apache::loncommon::update_content_constraints($cdom,$cnum,$chome,
560: $cdom.'_'.$cnum);
561: }
562: }
563: $r->internal_redirect($dest);
564: }
565: return OK;
566: } else {
567: if (!$env{'request.course.id'}) {
568: &Apache::lonnet::appenv(
569: {"request.course.id" => $cdom.'_'.$cnum});
570: $furl='/adm/roles?tryagain=1';
571: $msg='<p><span class="LC_error">'
572: .&mt('Could not initialize [_1] at this time.',
573: $env{'course.'.$cdom.'_'.$cnum.'.description'})
574: .'</span></p>'
575: .'<p>'.&mt('Please try again.').'</p>'
576: .'<p>'.$ferr.'</p>';
577: }
578: if (&Apache::lonnet::allowed('adv') eq 'F') { $tadv=1; }
579: &Apache::lonnet::appenv({'request.role.adv'=>$tadv});
580:
581: if (($ferr) && ($tadv)) {
582: &error_page($r,$ferr,$furl);
583: } else {
584: # Check to see if the user is a CC entering a course
585: # for the first time
586: if ((($role eq 'cc') || ($role eq 'co'))
587: && ($env{'course.'.$cdom.'_'.$cnum.'.course.helper.not.run'})) {
588: $furl = "/adm/helper/course.initialization.helper";
589: # Send the user to the course they selected
590: } elsif ($env{'request.course.id'}) {
591: my ($dest,$destsymb,$checkenc);
592: $dest = $env{'form.destinationurl'};
593: $destsymb = $env{'form.destsymb'};
594: if ($dest ne '') {
595: if ($env{'form.switchrole'}) {
596: if ($destsymb ne '') {
597: if ($destsymb !~ m{^/enc/}) {
598: unless ($env{'request.role.adv'}) {
599: $checkenc = 1;
600: }
601: }
602: }
603: if ($dest =~ m{^/enc/}) {
604: if ($env{'request.role.adv'}) {
605: $dest = &Apache::lonenc::unencrypted($dest);
606: if ($destsymb eq '') {
607: ($destsymb) = ($dest =~ /(?:\?|\&)symb=([^\&]*)/);
608: $destsymb = &unescape($destsymb);
609: }
610: }
611: } else {
612: if ($destsymb eq '') {
613: ($destsymb) = ($dest =~ /(?:\?|\&)symb=([^\&]+)/);
614: $destsymb = &unescape($destsymb);
615: }
616: unless ($env{'request.role.adv'}) {
617: $checkenc = 1;
618: }
619: }
620: if (($checkenc) && ($destsymb ne '')) {
621: my ($encstate,$unencsymb,$res);
622: $unencsymb = &Apache::lonnet::symbclean($destsymb);
623: (undef,undef,$res) = &Apache::lonnet::decode_symb($unencsymb);
624: &Apache::lonnet::symbverify($unencsymb,$res,\$encstate);
625: if ($encstate) {
626: if (($dest ne '') && ($dest !~ m{^/enc/})) {
627: $dest=&Apache::lonenc::encrypted($dest);
628: }
629: }
630: }
631: }
632: unless (($dest =~ m{^/enc/}) || ($dest =~ /(\?|\&)symb=.+___\d+___.+/)) {
633: if (($destsymb ne '') && ($destsymb !~ m{^/enc/})) {
634: my $esc_symb = &escape($destsymb);
635: $dest .= '?symb='.$esc_symb;
636: }
637: }
638: &redirect_user($r, &mt('Entering [_1]',
639: $env{'course.'.$cdom.'_'.$cnum.'.description'}),
640: $dest, $msg);
641: return OK;
642: }
643: if (&Apache::lonnet::allowed('whn',
644: $env{'request.course.id'})
645: || &Apache::lonnet::allowed('whn',
646: $env{'request.course.id'}.'/'
647: .$env{'request.course.sec'})
648: ) {
649: my $startpage = &courseloadpage($env{'request.course.id'});
650: unless ($startpage eq 'firstres') {
651: $msg = &mt('Entering [_1] ...',
652: $env{'course.'.$env{'request.course.id'}.'.description'});
653: &redirect_user($r, &mt('New in course'),
654: '/adm/whatsnew?refpage=start', $msg);
655: return OK;
656: }
657: }
658: }
659: # Are we allowed to look at the first resource?
660: my $access;
661: if ($furl =~ m{^(/adm/wrapper|)/ext/}) {
662: # If it's an external resource,
663: # strip off the symb argument and possible query
664: my ($exturl,$symb) = ($furl =~ m{^(.+)(?:\?|\&)symb=(.+)$});
665: # Unencode $symb
666: $symb = &unescape($symb);
667: # Then check for permission
668: $access = &Apache::lonnet::allowed('bre',$exturl,$symb);
669: # For other resources just check for permission
670: } else {
671: $access = &Apache::lonnet::allowed('bre',$furl);
672: }
673: if (!$access) {
674: $furl = &Apache::lonpageflip::first_accessible_resource();
675: } elsif ($access eq 'B') {
676: $furl = '/adm/navmaps?showOnlyHomework=1';
677: }
678: $msg = &mt('Entering [_1] ...',
679: $env{'course.'.$cdom.'_'.$cnum.'.description'});
680: &redirect_user($r, &mt('Entering [_1]',
681: $env{'course.'.$cdom.'_'.$cnum.'.description'}),
682: $furl, $msg);
683: }
684: return OK;
685: }
686: }
687: #
688: # Send the user to the construction space they selected
689: if ($role =~ /^(au|ca|aa)$/) {
690: my $redirect_url = '/priv/';
691: if ($role eq 'au') {
692: $redirect_url.=$env{'user.domain'}.'/'.$env{'user.name'};
693: } else {
694: $redirect_url .= $where;
695: }
696: $redirect_url .= '/';
697: &redirect_user($r,&mt('Entering Authoring Space'),
698: $redirect_url);
699: return OK;
700: }
701: if ($role eq 'dc') {
702: my $redirect_url = '/adm/menu/';
703: &redirect_user($r,&mt('Loading Domain Coordinator Menu'),
704: $redirect_url);
705: return OK;
706: }
707: if ($role eq 'sc') {
708: my $redirect_url = '/adm/grades?command=scantronupload';
709: &redirect_user($r,&mt('Loading Data Upload Page'),
710: $redirect_url);
711: return OK;
712: }
713: }
714: }
715: }
716: }
717:
718:
719: # =============================================================== No Roles Init
720:
721: &Apache::loncommon::content_type($r,'text/html');
722: &Apache::loncommon::no_cache($r);
723: $r->send_http_header;
724: return OK if $r->header_only;
725:
726: my $crumbtext = 'User Roles';
727: my $pagetitle = 'My Roles';
728: my $recent = &mt('Recent Roles');
729: my $standby = &mt('Role selected. Please stand by.');
730: my $show_course=&Apache::loncommon::show_course();
731: if ($show_course) {
732: $crumbtext = 'Courses';
733: $pagetitle = 'My Courses';
734: $recent = &mt('Recent Courses');
735: $standby = &mt('Course selected. Please stand by.');
736: }
737: my $brcrum =[{href=>"/adm/roles",text=>$crumbtext}];
738:
739: my %roles_in_env;
740: my $showcount = &roles_from_env(\%roles_in_env,$update);
741:
742: my $swinfo=&Apache::lonmenu::rawconfig();
743: my $start_page=&Apache::loncommon::start_page($pagetitle,undef,{bread_crumbs=>$brcrum});
744: my %domdefs=&Apache::lonnet::get_domain_defaults($env{'user.domain'});
745: my $cattype = 'std';
746: if ($domdefs{'catauth'}) {
747: $cattype = $domdefs{'catauth'};
748: }
749: my $funcs = &get_roles_functions($showcount,$cattype);
750: &js_escape(\$standby);
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' => $refresh});
892: if ((($cattype eq 'std') || ($cattype eq 'domonly')) && (!$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: $r->print(
897: '<p>'
898: .&mt('[_1]Visit the [_2]Course/Community Catalog[_3][_4]'
899: .' to view all [_5] LON-CAPA courses and communities.'
900: ,'<b>'
901: ,'<a href="/adm/coursecatalog?showdom='.$esc_dom.'">'
902: ,'</a>'
903: ,'</b>'
904: ,'"'.$domdesc.'"')
905: .'<br />'
906: .&mt('If a course or community is [_1]not[_2] in your list of current courses and communities below,'
907: .' you may be able to enroll if self-enrollment is permitted.'
908: ,'<b>','</b>')
909: .'</p>'
910: );
911: }
912: }
913:
914: # No active roles
915: if ($countactive==0) {
916: &requestcourse_advice($r,$cattype,$inrole);
917: $r->print('</form>');
918: if ($countfuture) {
919: $r->print(&mt('The following [quant,_1,role,roles] will become active in the future:',$countfuture));
920: my $doheaders = &roletable_headers($r,\%roleclass,\%sortrole,
921: $nochoose);
922: &print_rolerows($r,$doheaders,\%roleclass,\%sortrole,\%dcroles,
923: \%roletext);
924: my $tremark='';
925: my $tbg;
926: if ($env{'request.role'} eq 'cm') {
927: $tbg="LC_roles_selected";
928: $tremark=&mt('Currently selected.').' ';
929: } else {
930: $tbg="LC_roles_is";
931: }
932: $r->print(&Apache::loncommon::start_data_table_row()
933: .'<td class="'.$tbg.'"> </td>'
934: .'<td colspan="3">'
935: .&mt('No role specified')
936: .'</td>'
937: .'<td>'.$tremark.' </td>'
938: .&Apache::loncommon::end_data_table_row()
939: );
940:
941: $r->print(&Apache::loncommon::end_data_table());
942: }
943: $r->print(&Apache::loncommon::end_page());
944: return OK;
945: }
946: # ----------------------------------------------------------------------- Table
947:
948: if ($numdc > 0) {
949: $r->print(&coursepick_jscript());
950: $r->print(&Apache::loncommon::coursebrowser_javascript().
951: &Apache::loncommon::authorbrowser_javascript());
952: }
953:
954: unless ((!&Apache::loncommon::show_course()) || ($nochoose) || ($countactive==1)) {
955: $r->print("<h2>".&mt('Select a Course to Enter')."</h2>\n");
956: }
957: if ($env{'form.destinationurl'}) {
958: $r->print('<input type="hidden" name="destinationurl" value="'.
959: $env{'form.destinationurl'}.'" />');
960: if ($env{'form.destsymb'} ne '') {
961: $r->print('<input type="hidden" name="destsymb" value="'.
962: $env{'form.destsymb'}.'" />');
963: }
964: }
965:
966: my $doheaders = &roletable_headers($r,\%roleclass,\%sortrole,$nochoose);
967: if ($env{'environment.recentroles'}) {
968: my %recent_roles =
969: &Apache::lonhtmlcommon::get_recent('roles',$env{'environment.recentrolesn'});
970: my $output='';
971: foreach my $role (sort(keys(%recent_roles))) {
972: if (ref($roletext{'user.role.'.$role}) eq 'ARRAY') {
973: $output.= &Apache::loncommon::start_data_table_row().
974: $roletext{'user.role.'.$role}->[0].
975: &Apache::loncommon::end_data_table_row();
976: if ($roletext{'user.role.'.$role}->[1] ne '') {
977: $output .= &Apache::loncommon::continue_data_table_row().
978: $roletext{'user.role.'.$role}->[1].
979: &Apache::loncommon::end_data_table_row();
980: }
981: if ($role =~ m{dc\./($match_domain)/}
982: && $dcroles{$1}) {
983: $output .= &adhoc_roles_row($1,'recent');
984: }
985: } elsif ($numdc > 0) {
986: unless ($role =~/^error\:/) {
987: my ($roletext,$role_text_end) = &display_cc_role('user.role.'.$role);
988: if ($roletext) {
989: $output.= &Apache::loncommon::start_data_table_row().
990: $roletext.
991: &Apache::loncommon::end_data_table_row();
992: if ($role_text_end) {
993: $output .= &Apache::loncommon::continue_data_table_row().
994: $role_text_end.
995: &Apache::loncommon::end_data_table_row();
996: }
997: }
998: }
999: }
1000: }
1001: if ($output) {
1002: $r->print(&Apache::loncommon::start_data_table_empty_row()
1003: .'<td align="center" colspan="5">'
1004: .$recent
1005: .'</td>'
1006: .&Apache::loncommon::end_data_table_empty_row()
1007: );
1008: $r->print($output);
1009: $doheaders ++;
1010: }
1011: }
1012: &print_rolerows($r,$doheaders,\%roleclass,\%sortrole,\%dcroles,\%roletext);
1013: if ($countactive > 1) {
1014: my $tremark='';
1015: my $tbg;
1016: if ($env{'request.role'} eq 'cm') {
1017: $tbg="LC_roles_selected";
1018: $tremark=&mt('Currently selected.').' ';
1019: } else {
1020: $tbg="LC_roles_is";
1021: }
1022: $r->print(&Apache::loncommon::start_data_table_row());
1023: unless ($nochoose) {
1024: if ($env{'request.role'} ne 'cm') {
1025: $r->print('<td class="'.$tbg.'"><input type="submit" value="'.
1026: &mt('Select').'" name="cm" /></td>');
1027: } else {
1028: $r->print('<td class="'.$tbg.'"> </td>');
1029: }
1030: }
1031: $r->print('<td colspan="3">'
1032: .&mt('No role specified')
1033: .'</td>'
1034: .'<td>'.$tremark.' </td>'
1035: .&Apache::loncommon::end_data_table_row()
1036: );
1037: }
1038: $r->print(&Apache::loncommon::end_data_table());
1039: unless ($nochoose) {
1040: $r->print("</form>\n");
1041: }
1042: # ------------------------------------------------------------ Privileges Info
1043: if (($advanced) && (($env{'user.error.msg'}) || ($error))) {
1044: $r->print('<hr /><h2>'.&mt('Current Privileges').'</h2>');
1045: $r->print(&privileges_info());
1046: }
1047: my $announcements = &Apache::lonnet::getannounce();
1048: $r->print(
1049: '<br />'.
1050: '<h2>'.&mt('Announcements').'</h2>'.
1051: $announcements
1052: ) unless (!$announcements);
1053: if ($advanced) {
1054: my $esc_dom = &HTML::Entities::encode($env{'user.domain'},'"<>&');
1055: $r->print('<p><small><i>'
1056: .&mt('This LON-CAPA server is version [_1]',$r->dir_config('lonVersion'))
1057: .'</i></small></p>');
1058: }
1059: $r->print(&Apache::loncommon::end_page());
1060: return OK;
1061: }
1062:
1063: sub roles_from_env {
1064: my ($roleshash,$update) = @_;
1065: my $count = 0;
1066: if (ref($roleshash) eq 'HASH') {
1067: foreach my $envkey (keys(%env)) {
1068: if ($envkey =~ m{^user\.role\.(\w+)[./]}) {
1069: next if ($1 eq 'gr');
1070: $roleshash->{$envkey} = $env{$envkey};
1071: my ($start,$end) = split(/\./,$env{$envkey});
1072: unless ($end && $end<$update) {
1073: $count ++;
1074: }
1075: }
1076: }
1077: }
1078: return $count;
1079: }
1080:
1081: sub gather_roles {
1082: my ($update,$refresh,$now,$reinit,$nochoose,$roles_in_env,$roletext,$sortrole,$roleclass,$futureroles,
1083: $timezones,$loncaparev) = @_;
1084: my ($countactive,$countfuture,$inrole,$possiblerole) = (0,0,0,'');
1085: my $advanced = $env{'user.adv'};
1086: my $tryagain = $env{'form.tryagain'};
1087: my @ids = &Apache::lonnet::current_machine_ids();
1088: if (ref($roles_in_env) eq 'HASH') {
1089: foreach my $envkey (sort(keys(%{$roles_in_env}))) {
1090: my $button = 1;
1091: my $switchserver='';
1092: my $switchwarning;
1093: my ($role_text,$role_text_end,$sortkey,$role,$where,$trolecode,$tstart,
1094: $tend,$tremark,$tstatus,$tpstart,$tpend);
1095: &Apache::lonnet::role_status($envkey,$update,$refresh,$now,\$role,\$where,
1096: \$trolecode,\$tstatus,\$tstart,\$tend);
1097: next if (!defined($role) || $role eq '' || $role =~ /^gr/);
1098: $tremark='';
1099: $tpstart=' ';
1100: $tpend=' ';
1101: if ($env{'request.role'} eq $trolecode) {
1102: $tstatus='selected';
1103: }
1104: my $tbg;
1105: if (($tstatus eq 'is')
1106: || ($tstatus eq 'selected')
1107: || ($tstatus eq 'future')
1108: || ($env{'form.display'} eq 'showall')) {
1109: my $timezone = &role_timezone($where,$timezones);
1110: if ($tstart) {
1111: $tpstart=&Apache::lonlocal::locallocaltime($tstart,$timezone);
1112: }
1113: if ($tend) {
1114: $tpend=&Apache::lonlocal::locallocaltime($tend,$timezone);
1115: }
1116: if ($tstatus eq 'is') {
1117: $tbg='LC_roles_is';
1118: $possiblerole=$trolecode;
1119: $countactive++;
1120: } elsif ($tstatus eq 'future') {
1121: $tbg='LC_roles_future';
1122: $button=0;
1123: $futureroles->{$trolecode} = $tstart.':'.$tend;
1124: $countfuture ++;
1125: } elsif ($tstatus eq 'expired') {
1126: $tbg='LC_roles_expired';
1127: $button=0;
1128: } elsif ($tstatus eq 'will_not') {
1129: $tbg='LC_roles_will_not';
1130: $tremark.=&mt('Expired after logout.').' ';
1131: } elsif ($tstatus eq 'selected') {
1132: $tbg='LC_roles_selected';
1133: $inrole=1;
1134: $countactive++;
1135: $tremark.=&mt('Currently selected.').' ';
1136: }
1137: my $trole;
1138: if ($role =~ /^cr\//) {
1139: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$role);
1140: if ($tremark) { $tremark.='<br />'; }
1141: $tremark.=&mt('Custom role defined by [_1].',$rauthor.':'.$rdomain);
1142: }
1143: $trole=Apache::lonnet::plaintext($role);
1144: my $ttype;
1145: my $twhere;
1146: my ($tdom,$trest,$tsection)=
1147: split(/\//,Apache::lonnet::declutter($where));
1148: # First, Co-Authorship roles
1149: if (($role eq 'ca') || ($role eq 'aa')) {
1150: my $home = &Apache::lonnet::homeserver($trest,$tdom);
1151: my $allowed=0;
1152: foreach my $id (@ids) { if ($id eq $home) { $allowed=1; } }
1153: if (!$allowed) {
1154: $button=0;
1155: $switchserver='otherserver='.$home.'&role='.$trolecode;
1156: }
1157: #next if ($home eq 'no_host');
1158: $home = &Apache::lonnet::hostname($home);
1159: $ttype='Authoring Space';
1160: $twhere=&mt('User').': '.$trest.'<br />'.&mt('Domain').
1161: ': '.$tdom.'<br />'.
1162: ' '.&mt('Server').': '.$home;
1163: $env{'course.'.$tdom.'_'.$trest.'.description'}='ca';
1164: $tremark.=&Apache::lonhtmlcommon::authorbombs('/res/'.$tdom.'/'.$trest.'/');
1165: $sortkey=$role."$trest:$tdom";
1166: } elsif ($role eq 'au') {
1167: # Authors
1168: my $home = &Apache::lonnet::homeserver
1169: ($env{'user.name'},$env{'user.domain'});
1170: my $allowed=0;
1171: foreach my $id (@ids) { if ($id eq $home) { $allowed=1; } }
1172: if (!$allowed) {
1173: $button=0;
1174: $switchserver='otherserver='.$home.'&role='.$trolecode;
1175: }
1176: #next if ($home eq 'no_host');
1177: $home = &Apache::lonnet::hostname($home);
1178: $ttype='Authoring Space';
1179: $twhere=&mt('Domain').': '.$tdom.'<br />'.&mt('Server').
1180: ': '.$home;
1181: $env{'course.'.$tdom.'_'.$trest.'.description'}='ca';
1182: $tremark.=&Apache::lonhtmlcommon::authorbombs('/res/'.$tdom.'/'.$env{'user.name'}.'/');
1183: $sortkey=$role;
1184: } elsif ($trest) {
1185: my $tcourseid=$tdom.'_'.$trest;
1186: $ttype = &Apache::loncommon::course_type($tcourseid);
1187: $trole = &Apache::lonnet::plaintext($role,$ttype,$tcourseid);
1188: if ($env{'course.'.$tcourseid.'.description'}) {
1189: my $home=$env{'course.'.$tcourseid.'.home'};
1190: $twhere=$env{'course.'.$tcourseid.'.description'};
1191: $sortkey=$role."\0".$tdom."\0".$twhere."\0".$envkey;
1192: $twhere = &HTML::Entities::encode($twhere,'"<>&');
1193: unless ($twhere eq &mt('Currently not available')) {
1194: $twhere.=' <span class="LC_fontsize_small">'.
1195: &Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$trest,$tdom).
1196: '</span>';
1197: unless ($home && grep(/^\Q$home\E$/,@ids) && $loncaparev eq '') {
1198: my $required = $env{'course.'.$tcourseid.'.internal.releaserequired'};
1199: if ($required ne '') {
1200: ($switchserver,$switchwarning) =
1201: &Apache::loncommon::check_release_required($loncaparev,$tcourseid,$trolecode,$required);
1202: if ($switchserver || $switchwarning) {
1203: $button = 0;
1204: }
1205: }
1206: }
1207: }
1208: } else {
1209: my %newhash=&Apache::lonnet::coursedescription($tcourseid);
1210: if (%newhash) {
1211: $sortkey=$role."\0".$tdom."\0".$newhash{'description'}.
1212: "\0".$envkey;
1213: $twhere=&HTML::Entities::encode($newhash{'description'},'"<>&').
1214: ' <span class="LC_fontsize_small">'.
1215: &Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$trest,$tdom).
1216: '</span>';
1217: $ttype = $newhash{'type'};
1218: $trole = &Apache::lonnet::plaintext($role,$ttype,$tcourseid);
1219: my $home = $newhash{'home'};
1220: unless ($home && grep(/^\Q$home\E$/,@ids) && $loncaparev eq '') {
1221: my $required = $newhash{'internal.releaserequired'};
1222: if ($required ne '') {
1223: ($switchserver,$switchwarning) =
1224: &Apache::loncommon::check_release_required($loncaparev,$tcourseid,$trolecode,$required);
1225: if ($switchserver || $switchwarning) {
1226: $button = 0;
1227: }
1228: }
1229: }
1230: } else {
1231: $twhere=&mt('Currently not available');
1232: $env{'course.'.$tcourseid.'.description'}=$twhere;
1233: $sortkey=$role."\0".$tdom."\0".$twhere."\0".$envkey;
1234: $ttype = 'Unavailable';
1235: }
1236: }
1237: if ($tsection) {
1238: $twhere.='<br />'.&mt('Section').': '.$tsection;
1239: }
1240: if ($role ne 'st') { $twhere.="<br />".&mt('Domain').":".$tdom; }
1241: } elsif ($tdom) {
1242: $ttype='Domain';
1243: $twhere=$tdom;
1244: $sortkey=$role.$twhere;
1245: } else {
1246: $ttype='System';
1247: $twhere=&mt('system wide');
1248: $sortkey=$role.$twhere;
1249: }
1250: ($role_text,$role_text_end) =
1251: &build_roletext($trolecode,$tdom,$trest,$tstatus,$tryagain,
1252: $advanced,$tremark,$tbg,$trole,$twhere,$tpstart,
1253: $tpend,$nochoose,$button,$switchserver,$reinit,$switchwarning);
1254: $roletext->{$envkey}=[$role_text,$role_text_end];
1255: if (!$sortkey) {$sortkey=$twhere."\0".$envkey;}
1256: $sortrole->{$sortkey}=$envkey;
1257: $roleclass->{$envkey}=$ttype;
1258: }
1259: }
1260: }
1261: return ($countactive,$countfuture,$inrole,$possiblerole);
1262: }
1263:
1264: sub role_timezone {
1265: my ($where,$timezones) = @_;
1266: my $timezone;
1267: if (ref($timezones) eq 'HASH') {
1268: if ($where =~ m{^/($match_domain)/($match_courseid)}) {
1269: my $cdom = $1;
1270: my $cnum = $2;
1271: if ($cdom && $cnum) {
1272: if (!exists($timezones->{$cdom.'_'.$cnum})) {
1273: my $tz;
1274: if ($env{'course.'.$cdom.'_'.$cnum.'.description'}) {
1275: $tz = $env{'course.'.$cdom.'_'.$cnum.'.timezone'};
1276: } else {
1277: my %timehash =
1278: &Apache::lonnet::get('environment',['timezone'],$cdom,$cnum);
1279: $tz = $timehash{'timezone'};
1280: }
1281: if ($tz eq '') {
1282: if (!exists($timezones->{$cdom})) {
1283: my %domdefaults =
1284: &Apache::lonnet::get_domain_defaults($cdom);
1285: if ($domdefaults{'timezone_def'} eq '') {
1286: $timezones->{$cdom} = 'local';
1287: } else {
1288: $timezones->{$cdom} = $domdefaults{'timezone_def'};
1289: }
1290: }
1291: $timezones->{$cdom.'_'.$cnum} = $timezones->{$cdom};
1292: } else {
1293: $timezones->{$cdom.'_'.$cnum} =
1294: &Apache::lonlocal::gettimezone($tz);
1295: }
1296: }
1297: $timezone = $timezones->{$cdom.'_'.$cnum};
1298: }
1299: } else {
1300: my ($tdom) = ($where =~ m{^/($match_domain)});
1301: if ($tdom) {
1302: if (!exists($timezones->{$tdom})) {
1303: my %domdefaults = &Apache::lonnet::get_domain_defaults($tdom);
1304: if ($domdefaults{'timezone_def'} eq '') {
1305: $timezones->{$tdom} = 'local';
1306: } else {
1307: $timezones->{$tdom} = $domdefaults{'timezone_def'};
1308: }
1309: }
1310: $timezone = $timezones->{$tdom};
1311: }
1312: }
1313: if ($timezone eq 'local') {
1314: $timezone = undef;
1315: }
1316: }
1317: return $timezone;
1318: }
1319:
1320: sub roletable_headers {
1321: my ($r,$roleclass,$sortrole,$nochoose) = @_;
1322: my $doheaders;
1323: if ((ref($sortrole) eq 'HASH') && (ref($roleclass) eq 'HASH')) {
1324: $r->print('<br />'
1325: .&Apache::loncommon::start_data_table()
1326: .&Apache::loncommon::start_data_table_header_row()
1327: );
1328: if (!$nochoose) { $r->print('<th> </th>'); }
1329: $r->print('<th>'.&mt('User Role').'</th>'
1330: .'<th>'.&mt('Extent').'</th>'
1331: .'<th>'.&mt('Start').'</th>'
1332: .'<th>'.&mt('End').'</th>'
1333: .&Apache::loncommon::end_data_table_header_row()
1334: );
1335: $doheaders=-1;
1336: my @roletypes = &roletypes();
1337: foreach my $type (@roletypes) {
1338: my $haverole=0;
1339: foreach my $which (sort {uc($a) cmp uc($b)} (keys(%{$sortrole}))) {
1340: if ($roleclass->{$sortrole->{$which}} =~ /^\Q$type\E/) {
1341: $haverole=1;
1342: }
1343: }
1344: if ($haverole) { $doheaders++; }
1345: }
1346: }
1347: return $doheaders;
1348: }
1349:
1350: sub roletypes {
1351: my @types = ('Domain','Authoring Space','Course','Community','Unavailable','System');
1352: return @types;
1353: }
1354:
1355: sub print_rolerows {
1356: my ($r,$doheaders,$roleclass,$sortrole,$dcroles,$roletext) = @_;
1357: if ((ref($roleclass) eq 'HASH') && (ref($sortrole) eq 'HASH')) {
1358: my @types = &roletypes();
1359: foreach my $type (@types) {
1360: my $output;
1361: foreach my $which (sort {uc($a) cmp uc($b)} (keys(%{$sortrole}))) {
1362: if ($roleclass->{$sortrole->{$which}} =~ /^\Q$type\E/) {
1363: if (ref($roletext) eq 'HASH') {
1364: if (ref($roletext->{$sortrole->{$which}}) eq 'ARRAY') {
1365: $output.= &Apache::loncommon::start_data_table_row().
1366: $roletext->{$sortrole->{$which}}->[0].
1367: &Apache::loncommon::end_data_table_row();
1368: if ($roletext->{$sortrole->{$which}}->[1] ne '') {
1369: $output .= &Apache::loncommon::continue_data_table_row().
1370: $roletext->{$sortrole->{$which}}->[1].
1371: &Apache::loncommon::end_data_table_row();
1372: }
1373: }
1374: if ($sortrole->{$which} =~ m-dc\./($match_domain)/-) {
1375: if (ref($dcroles) eq 'HASH') {
1376: if ($dcroles->{$1}) {
1377: $output .= &adhoc_roles_row($1,'');
1378: }
1379: }
1380: }
1381: }
1382: }
1383: }
1384: if ($output) {
1385: if ($doheaders > 0) {
1386: $r->print(&Apache::loncommon::start_data_table_empty_row()
1387: .'<td align="center" colspan="5">'
1388: .&mt($type)
1389: .'</td>'
1390: .&Apache::loncommon::end_data_table_empty_row()
1391: );
1392: }
1393: $r->print($output);
1394: }
1395: }
1396: }
1397: }
1398:
1399: sub findcourse_advice {
1400: my ($r,$cattype) = @_;
1401: my $domdesc = &Apache::lonnet::domain($env{'user.domain'},'description');
1402: my $esc_dom = &HTML::Entities::encode($env{'user.domain'},'"<>&');
1403: if (&Apache::lonnet::auto_run(undef,$env{'user.domain'})) {
1404: $r->print(&mt('If you were expecting to see an active role listed for a particular course in the [_1] domain, it may be missing for one of the following reasons:',$domdesc).'
1405: <ul>
1406: <li>'.&mt('The course has yet to be created.').'</li>
1407: <li>'.&mt('Automatic enrollment of registered students has not been enabled for the course.').'</li>
1408: <li>'.&mt('You are in a section of course for which automatic enrollment in the corresponding LON-CAPA course is not active.').'</li>
1409: <li>'.&mt('The start date for automated enrollment has yet to be reached.').'</li>
1410: <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>
1411: </ul>');
1412: } else {
1413: $r->print(&mt('If you were expecting to see an active role listed for a particular course, that course may not have been created yet.').'<br />');
1414: }
1415: if (($cattype eq 'std') || ($cattype eq 'domonly')) {
1416: $r->print('<h3>'.&mt('Self-Enrollment').'</h3>'.
1417: '<p>'.&mt('The [_1]Course/Community Catalog[_2] provides information about all [_3] classes for which LON-CAPA courses have been created, as well as any communities in the domain.','<a href="/adm/coursecatalog?showdom='.$esc_dom.'">','</a>',$domdesc).'<br />');
1418: $r->print(&mt('You can search for courses and communities which permit self-enrollment, if you would like to enroll in one.').'</p>'.
1419: &Apache::loncoursequeueadmin::queued_selfenrollment());
1420: }
1421: return;
1422: }
1423:
1424: sub requestcourse_advice {
1425: my ($r,$cattype,$inrole) = @_;
1426: my $domdesc = &Apache::lonnet::domain($env{'user.domain'},'description');
1427: my $esc_dom = &HTML::Entities::encode($env{'user.domain'},'"<>&');
1428: my (%can_request,%request_doms,$output);
1429: &Apache::lonnet::check_can_request($env{'user.domain'},\%can_request,\%request_doms);
1430: if (keys(%request_doms) > 0) {
1431: my ($types,$typename) = &Apache::loncommon::course_types();
1432: if ((ref($types) eq 'ARRAY') && (ref($typename) eq 'HASH')) {
1433: my (@reqdoms,@reqtypes);
1434: foreach my $type (sort(keys(%request_doms))) {
1435: push(@reqtypes,$type);
1436: if (ref($request_doms{$type}) eq 'ARRAY') {
1437: my $domstr = join(', ',map { &Apache::lonnet::domain($_) } sort(@{$request_doms{$type}}));
1438: $output .=
1439: '<li>'
1440: .&mt('[_1]'.$typename->{$type}.'[_2] in domain: [_3]',
1441: '<i>',
1442: '</i>',
1443: '<b>'.$domstr.'</b>')
1444: .'</li>';
1445: foreach my $dom (@{$request_doms{$type}}) {
1446: unless (grep(/^\Q$dom\E/,@reqdoms)) {
1447: push(@reqdoms,$dom);
1448: }
1449: }
1450: }
1451: }
1452: my @showtypes;
1453: foreach my $type (@{$types}) {
1454: if (grep(/^\Q$type\E$/,@reqtypes)) {
1455: push(@showtypes,$type);
1456: }
1457: }
1458: my $requrl = '/adm/requestcourse';
1459: if (@reqdoms == 1) {
1460: $requrl .= '?showdom='.$reqdoms[0];
1461: }
1462: if (@showtypes > 0) {
1463: $requrl.=(($requrl=~/\?/)?'&':'?').'crstype='.$showtypes[0];
1464: }
1465: if (@reqdoms == 1 || @showtypes > 0) {
1466: $requrl .= '&state=crstype&action=new';
1467: }
1468: if ($output) {
1469: $r->print('<h3>'.&mt('Request creation of a course or community').'</h3>'.
1470: '<p>'.
1471: &mt('You have rights to request the creation of courses and/or communities in the following domain(s):').
1472: '<ul>'.
1473: $output.
1474: '</ul>'.
1475: &mt('Use the [_1]request form[_2] to submit a request for creation of a new course or community.',
1476: '<a href="'.$requrl.'">','</a>').
1477: '</p>');
1478: }
1479: }
1480: } elsif (!$env{'user.adv'}) {
1481: if ($inrole) {
1482: $r->print('<h3>'.&mt('Currently no additional roles, courses or communities').'</h3>');
1483: } else {
1484: $r->print('<h3>'.&mt('Currently no active roles, courses or communities').'</h3>');
1485: }
1486: &findcourse_advice($r,$cattype);
1487: }
1488: return;
1489: }
1490:
1491: sub privileges_info {
1492: my ($which) = @_;
1493: my $output;
1494:
1495: $which ||= $env{'request.role'};
1496:
1497: foreach my $envkey (sort(keys(%env))) {
1498: next if ($envkey!~/^user\.priv\.\Q$which\E\.(.*)/);
1499:
1500: my $where=$1;
1501: my $ttype;
1502: my $twhere;
1503: my (undef,$tdom,$trest,$tsec)=split(m{/},$where);
1504: if ($trest) {
1505: if ($env{'course.'.$tdom.'_'.$trest.'.description'} eq 'ca') {
1506: $ttype='Authoring Space';
1507: $twhere='User: '.$trest.', Domain: '.$tdom;
1508: } else {
1509: $ttype= &Apache::loncommon::course_type($tdom.'_'.$trest);
1510: $twhere=$env{'course.'.$tdom.'_'.$trest.'.description'};
1511: if ($tsec) {
1512: my $sec_type = 'Section';
1513: if (exists($env{"user.role.gr.$where"})) {
1514: $sec_type = 'Group';
1515: }
1516: $twhere.=' ('.$sec_type.': '.$tsec.')';
1517: }
1518: }
1519: } elsif ($tdom) {
1520: $ttype='Domain';
1521: $twhere=$tdom;
1522: } else {
1523: $ttype='System';
1524: $twhere='/';
1525: }
1526: $output .= "\n<h3>".&mt($ttype).': '.$twhere.'</h3>'."\n<ul>";
1527: foreach my $priv (sort(split(/:/,$env{$envkey}))) {
1528: next if (!$priv);
1529:
1530: my ($prv,$restr)=split(/\&/,$priv);
1531: my $trestr='';
1532: if ($restr ne 'F') {
1533: $trestr.=' ('.
1534: join(', ',
1535: map { &Apache::lonnet::plaintext($_) }
1536: (split('',$restr))).') ';
1537: }
1538: $output .= "\n\t".
1539: '<li>'.&Apache::lonnet::plaintext($prv).$trestr.'</li>';
1540: }
1541: $output .= "\n".'</ul>';
1542: }
1543: return $output;
1544: }
1545:
1546: sub build_roletext {
1547: my ($trolecode,$tdom,$trest,$tstatus,$tryagain,$advanced,$tremark,$tbg,$trole,$twhere,$tpstart,$tpend,$nochoose,$button,$switchserver,$reinit,$switchwarning) = @_;
1548: my ($roletext,$roletext_end);
1549: my $is_dc=($trolecode =~ m/^dc\./);
1550: my $rowspan=($is_dc) ? ''
1551: : ' rowspan="2" ';
1552:
1553: unless ($nochoose) {
1554: my $buttonname=$trolecode;
1555: $buttonname=~s/\W//g;
1556: if (!$button) {
1557: if ($switchserver) {
1558: $roletext.='<td'.$rowspan.' class="'.$tbg.'">'
1559: .'<a href="/adm/switchserver?'.$switchserver.'">'
1560: .&mt('Switch Server')
1561: .'</a></td>';
1562: } else {
1563: $roletext.=('<td'.$rowspan.' class="'.$tbg.'"> </td>');
1564: }
1565: if ($switchwarning) {
1566: if ($tremark eq '') {
1567: $tremark = $switchwarning;
1568: } else {
1569: $tremark .= '<br />'.$switchwarning;
1570: }
1571: }
1572: } elsif ($tstatus eq 'is') {
1573: $roletext.='<td'.$rowspan.' class="'.$tbg.'">'.
1574: '<input name="'.$buttonname.'" type="button" value="'.
1575: &mt('Select').'" onclick="javascript:enterrole(this.form,\''.
1576: $trolecode."','".$buttonname.'\');" /></td>';
1577: } elsif ($tryagain) {
1578: $roletext.=
1579: '<td'.$rowspan.' class="'.$tbg.'">'.
1580: '<input name="'.$buttonname.'" type="button" value="'.
1581: &mt('Try Selecting Again').'" onclick="javascript:enterrole(this.form,\''.
1582: $trolecode."','".$buttonname.'\');" /></td>';
1583: } elsif ($advanced) {
1584: $roletext.=
1585: '<td'.$rowspan.' class="'.$tbg.'">'.
1586: '<input name="'.$buttonname.'" type="button" value="'.
1587: &mt('Re-Initialize').'" onclick="javascript:enterrole(this.form,\''.
1588: $trolecode."','".$buttonname.'\');" /></td>';
1589: } elsif ($reinit) {
1590: $roletext.=
1591: '<td'.$rowspan.' class="'.$tbg.'">'.
1592: '<input name="'.$buttonname.'" type="button" value="'.
1593: &mt('Re-Select').'" onclick="javascript:enterrole(this.form,\''.
1594: $trolecode."','".$buttonname.'\');" /></td>';
1595: } else {
1596: $roletext.=
1597: '<td'.$rowspan.' class="'.$tbg.'">'.
1598: '<input name="'.$buttonname.'" type="button" value="'.
1599: &mt('Re-Select').'" onclick="javascript:enterrole(this.form,\''.
1600: $trolecode."','".$buttonname.'\');" /></td>';
1601: }
1602: }
1603: if ($trolecode !~ m/^(dc|ca|au|aa)\./) {
1604: $tremark.=&Apache::lonannounce::showday(time,1,
1605: &Apache::lonannounce::readcalendar($tdom.'_'.$trest));
1606: }
1607: $roletext.='<td>'.$trole.'</td>'
1608: .'<td>'.$twhere.'</td>'
1609: .'<td>'.$tpstart.'</td>'
1610: .'<td>'.$tpend.'</td>';
1611: if (!$is_dc) {
1612: $roletext_end = '<td colspan="4">'.
1613: $tremark.' '.
1614: '</td>';
1615: }
1616: return ($roletext,$roletext_end);
1617: }
1618:
1619: sub check_author_homeserver {
1620: my ($uname,$udom)=@_;
1621: if (($uname eq '') || ($udom eq '')) {
1622: return ('fail','');
1623: }
1624: my $home = &Apache::lonnet::homeserver($uname,$udom);
1625: if (&Apache::lonnet::host_domain($home) ne $udom) {
1626: return ('fail',$home);
1627: }
1628: my @ids=&Apache::lonnet::current_machine_ids();
1629: if (grep(/^\Q$home\E$/,@ids)) {
1630: return ('ok',$home);
1631: } else {
1632: return ('switchserver',$home);
1633: }
1634: }
1635:
1636: sub check_fordc {
1637: my ($dcroles,$update,$then) = @_;
1638: my $numdc = 0;
1639: if ($env{'user.adv'}) {
1640: foreach my $envkey (sort(keys(%env))) {
1641: if ($envkey=~/^user\.role\.dc\.\/($match_domain)\/$/) {
1642: my $dcdom = $1;
1643: my $livedc = 1;
1644: my ($tstart,$tend)=split(/\./,$env{$envkey});
1645: my $limit = $update;
1646: if ($env{'request.role'} eq 'dc./'.$dcdom.'/') {
1647: $limit = $then;
1648: }
1649: if ($tstart && $tstart>$limit) { $livedc = 0; }
1650: if ($tend && $tend <$limit) { $livedc = 0; }
1651: if ($livedc) {
1652: $$dcroles{$dcdom} = $envkey;
1653: $numdc++;
1654: }
1655: }
1656: }
1657: }
1658: return $numdc;
1659: }
1660:
1661: sub adhoc_course_role {
1662: my ($refresh,$update,$then) = @_;
1663: my ($cdom,$cnum,$crstype);
1664: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
1665: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
1666: $crstype = &Apache::loncommon::course_type();
1667: if (&check_forcc($cdom,$cnum,$refresh,$update,$then,$crstype)) {
1668: my $setprivs;
1669: if (!defined($env{'user.role.'.$env{'form.switchrole'}})) {
1670: $setprivs = 1;
1671: } else {
1672: my ($start,$end) = split(/\./,$env{'user.role.'.$env{'form.switchrole'}});
1673: if (($start && ($start>$refresh || $start == -1)) ||
1674: ($end && $end<$update)) {
1675: $setprivs = 1;
1676: }
1677: }
1678: unless ($setprivs) {
1679: if (!exists($env{'user.priv.'.$env{'form.switchrole'}.'./'})) {
1680: $setprivs = 1;
1681: }
1682: }
1683: if ($setprivs) {
1684: if ($env{'form.switchrole'} =~ m-^(in|ta|ep|ad|st|cr)(.*?)\./\Q$cdom\E/\Q$cnum\E/?(\w*)$-) {
1685: my $role = $1;
1686: my $custom_role = $2;
1687: my $usec = $3;
1688: if ($role eq 'cr') {
1689: if ($custom_role =~ m-^/$match_domain/$match_username/\w+$-) {
1690: $role .= $custom_role;
1691: } else {
1692: return;
1693: }
1694: }
1695: my (%userroles,%newrole,%newgroups,%group_privs);
1696: my %cgroups =
1697: &Apache::lonnet::get_active_groups($env{'user.domain'},
1698: $env{'user.name'},$cdom,$cnum);
1699: foreach my $group (keys(%cgroups)) {
1700: $group_privs{$group} =
1701: $env{'user.priv.cc./'.$cdom.'/'.$cnum.'./'.$cdom.'/'.$cnum.'/'.$group};
1702: }
1703: $newgroups{'/'.$cdom.'/'.$cnum} = \%group_privs;
1704: my $area = '/'.$cdom.'/'.$cnum;
1705: my $spec = $role.'.'.$area;
1706: if ($usec ne '') {
1707: $spec .= '/'.$usec;
1708: $area .= '/'.$usec;
1709: }
1710: if ($role =~ /^cr/) {
1711: &Apache::lonnet::custom_roleprivs(\%newrole,$role,$cdom,$cnum,$spec,$area);
1712: } else {
1713: &Apache::lonnet::standard_roleprivs(\%newrole,$role,$cdom,$spec,$cnum,$area);
1714: }
1715: &Apache::lonnet::set_userprivs(\%userroles,\%newrole,\%newgroups);
1716: my $adhocstart = $refresh-1;
1717: $userroles{'user.role.'.$spec} = $adhocstart.'.';
1718: &Apache::lonnet::appenv(\%userroles,[$role,'cm']);
1719: }
1720: }
1721: }
1722: return;
1723: }
1724:
1725: sub check_forcc {
1726: my ($cdom,$cnum,$refresh,$update,$then,$crstype) = @_;
1727: my ($is_cc,$ccrole);
1728: if ($crstype eq 'Community') {
1729: $ccrole = 'co';
1730: } else {
1731: $ccrole = 'cc';
1732: }
1733: if (&Apache::lonnet::is_course($cdom,$cnum)) {
1734: my $envkey = 'user.role.'.$ccrole.'./'.$cdom.'/'.$cnum;
1735: if (defined($env{$envkey})) {
1736: $is_cc = 1;
1737: my ($tstart,$tend)=split(/\./,$env{$envkey});
1738: my $limit = $update;
1739: if ($env{'request.role'} eq $ccrole.'./'.$cdom.'/'.$cnum) {
1740: $limit = $then;
1741: }
1742: if ($tstart && $tstart>$refresh) { $is_cc = 0; }
1743: if ($tend && $tend <$limit) { $is_cc = 0; }
1744: }
1745: }
1746: return $is_cc;
1747: }
1748:
1749: sub courselink {
1750: my ($dcdom,$rowtype) = @_;
1751: my $courseform=&Apache::loncommon::selectcourse_link
1752: ('rolechoice','dccourse'.$rowtype.'_'.$dcdom,
1753: 'dcdomain'.$rowtype.'_'.$dcdom,'coursedesc'.$rowtype.'_'.
1754: $dcdom,$dcdom,undef,'Course/Community');
1755: my $hiddenitems = '<input type="hidden" name="dcdomain'.$rowtype.'_'.$dcdom.'" value="'.$dcdom.'" />'.
1756: '<input type="hidden" name="origdom'.$rowtype.'_'.$dcdom.'" value="'.$dcdom.'" />'.
1757: '<input type="hidden" name="dccourse'.$rowtype.'_'.$dcdom.'" value="" />'.
1758: '<input type="hidden" name="coursedesc'.$rowtype.'_'.$dcdom.'" value="" />';
1759: return $courseform.$hiddenitems;
1760: }
1761:
1762: sub coursepick_jscript {
1763: my %js_lt = &Apache::lonlocal::texthash(
1764: 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.",
1765: youc => 'You can only use this screen to select courses and communities in the current domain.',
1766: );
1767: &js_escape(\%js_lt);
1768: my $verify_script = <<"END";
1769: <script type="text/javascript">
1770: // <![CDATA[
1771: function verifyCoursePick(caller) {
1772: var numbutton = getIndex(caller)
1773: var pickedCourse = document.rolechoice.elements[numbutton+4].value
1774: var pickedDomain = document.rolechoice.elements[numbutton+2].value
1775: if (document.rolechoice.elements[numbutton+2].value == document.rolechoice.elements[numbutton+3].value) {
1776: if (pickedCourse != '') {
1777: if (numbutton != -1) {
1778: var courseTarget = "cc./"+pickedDomain+"/"+pickedCourse
1779: document.rolechoice.elements[numbutton+1].name = courseTarget
1780: document.rolechoice.submit()
1781: }
1782: }
1783: else {
1784: alert("$js_lt{'plsu'}");
1785: }
1786: }
1787: else {
1788: alert("$js_lt{'youc'}")
1789: }
1790: }
1791: function getIndex(caller) {
1792: for (var i=0;i<document.rolechoice.elements.length;i++) {
1793: if (document.rolechoice.elements[i] == caller) {
1794: return i;
1795: }
1796: }
1797: return -1;
1798: }
1799: // ]]>
1800: </script>
1801: END
1802: return $verify_script;
1803: }
1804:
1805: sub coauthorlink {
1806: my ($dcdom,$rowtype) = @_;
1807: my $coauthorform=&Apache::loncommon::selectauthor_link('rolechoice',$dcdom);
1808: my $hiddenitems = '<input type="hidden" name="adhoccauname'.$rowtype.'_'.$dcdom.'" value="" />';
1809: return $coauthorform.$hiddenitems;
1810: }
1811:
1812: sub display_cc_role {
1813: my $rolekey = shift;
1814: my ($roletext,$roletext_end);
1815: my $advanced = $env{'user.adv'};
1816: my $tryagain = $env{'form.tryagain'};
1817: unless ($rolekey =~/^error\:/) {
1818: if ($rolekey =~ m{^user\.role\.(cc|co)\./($match_domain)/($match_courseid)$}) {
1819: my $ccrole = $1;
1820: my $tdom = $2;
1821: my $trest = $3;
1822: my $tcourseid = $tdom.'_'.$trest;
1823: my $trolecode = $ccrole.'./'.$tdom.'/'.$trest;
1824: my $twhere;
1825: my $ttype;
1826: my $tbg='LC_roles_is';
1827: my %newhash=&Apache::lonnet::coursedescription($tcourseid);
1828: if (%newhash) {
1829: $twhere=$newhash{'description'}.
1830: ' <span class="LC_fontsize_small">'.
1831: &Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$trest,$tdom).
1832: '</span>';
1833: $ttype = $newhash{'type'};
1834: } else {
1835: $twhere=&mt('Currently not available');
1836: $env{'course.'.$tcourseid.'.description'}=$twhere;
1837: }
1838: my $trole = &Apache::lonnet::plaintext($ccrole,$ttype,$tcourseid);
1839: $twhere.="<br />".&mt('Domain').":".$tdom;
1840: ($roletext,$roletext_end) = &build_roletext($trolecode,$tdom,$trest,'is',$tryagain,$advanced,'',$tbg,$trole,$twhere,'','','',1,'');
1841: }
1842: }
1843: return ($roletext,$roletext_end);
1844: }
1845:
1846: sub adhoc_roles_row {
1847: my ($dcdom,$rowtype) = @_;
1848: my $output = &Apache::loncommon::continue_data_table_row()
1849: .' <td colspan="5">'
1850: .&mt('[_1]Ad hoc[_2] roles in domain [_3] --'
1851: ,'<span class="LC_cusr_emph">','</span>',$dcdom)
1852: .' ';
1853: my $selectcclink = &courselink($dcdom,$rowtype);
1854: my $ccrole = &Apache::lonnet::plaintext('co',undef,undef,1);
1855: my $carole = &Apache::lonnet::plaintext('ca');
1856: my $selectcalink = &coauthorlink($dcdom,$rowtype);
1857: $output.=$ccrole.': '.$selectcclink
1858: .' | '.$carole.': '.$selectcalink.'</td>'
1859: .&Apache::loncommon::end_data_table_row();
1860: return $output;
1861: }
1862:
1863: sub recent_filename {
1864: my $area=shift;
1865: return 'nohist_recent_'.&escape($area);
1866: }
1867:
1868: sub courseloadpage {
1869: my ($courseid) = @_;
1870: my $startpage;
1871: my %entry_settings = &Apache::lonnet::get('nohist_whatsnew',
1872: [$courseid.':courseinit']);
1873: my ($tmp) = %entry_settings;
1874: unless ($tmp =~ /^error: 2 /) {
1875: $startpage = $entry_settings{$courseid.':courseinit'};
1876: }
1877: if ($startpage eq '') {
1878: if (exists($env{'environment.course_init_display'})) {
1879: $startpage = $env{'environment.course_init_display'};
1880: }
1881: }
1882: return $startpage;
1883: }
1884:
1885: sub update_session_roles {
1886: my $then=$env{'user.login.time'};
1887: my $refresh=$env{'user.refresh.time'};
1888: if (!$refresh) {
1889: $refresh = $then;
1890: }
1891: my $update = $env{'user.update.time'};
1892: if (!$update) {
1893: $update = $then;
1894: }
1895: my $now = time;
1896: my %roleshash =
1897: &Apache::lonnet::get_my_roles('','','userroles',
1898: ['active','future','previous'],
1899: undef,undef,1);
1900: my ($msg,@newsec,$oldsec,$currrole_expired,@changed_roles,
1901: %changed_groups,%dbroles,%deletedroles,%allroles,%allgroups,
1902: %userroles,%checkedgroup,%crprivs,$hasgroups,%rolechange,
1903: %groupchange,%newrole,%newgroup,%customprivchg,%groups_roles,
1904: @rolecodes);
1905: my @possroles = ('cr','st','ta','ad','ep','in','co','cc');
1906: my %courseroles;
1907: foreach my $item (keys(%roleshash)) {
1908: my ($uname,$udom,$role,$remainder) = split(/:/,$item,4);
1909: my ($tstart,$tend) = split(/:/,$roleshash{$item});
1910: my ($section,$group,@group_privs);
1911: if ($role =~ m{^gr/(\w*)$}) {
1912: $role = 'gr';
1913: my $priv = $1;
1914: next if ($tstart eq '-1');
1915: if (&curr_role_status($tstart,$tend,$refresh,$now) eq 'active') {
1916: if ($priv ne '') {
1917: push(@group_privs,$priv);
1918: }
1919: }
1920: if ($remainder =~ /:/) {
1921: (my $additional_privs,$group) =
1922: ($remainder =~ /^([\w:]+):([^:]+)$/);
1923: if ($additional_privs ne '') {
1924: if (&curr_role_status($tstart,$tend,$refresh,$now) eq 'active') {
1925: push(@group_privs,split(/:/,$additional_privs));
1926: @group_privs = sort(@group_privs);
1927: }
1928: }
1929: } else {
1930: $group = $remainder;
1931: }
1932: } else {
1933: $section = $remainder;
1934: }
1935: my $where = "/$udom/$uname";
1936: if ($section ne '') {
1937: $where .= "/$section";
1938: } elsif ($group ne '') {
1939: $where .= "/$group";
1940: }
1941: my $rolekey = "$role.$where";
1942: my $envkey = "user.role.$rolekey";
1943: $dbroles{$envkey} = 1;
1944: if (($env{'request.role'} eq $rolekey) && ($role ne 'st')) {
1945: if (&curr_role_status($tstart,$tend,$refresh,$now) ne 'active') {
1946: $currrole_expired = 1;
1947: }
1948: }
1949: if ($env{$envkey} eq '') {
1950: my $status_in_db =
1951: &curr_role_status($tstart,$tend,$now,$now);
1952: &gather_roleprivs(\%allroles,\%allgroups,\%userroles,$where,$role,$tstart,$tend,$status_in_db);
1953: if (($role eq 'st') && ($env{'request.role'} =~ m{^\Q$role\E\.\Q/$udom/$uname\E})) {
1954: if ($status_in_db eq 'active') {
1955: if ($section eq '') {
1956: push(@newsec,'none');
1957: } else {
1958: push(@newsec,$section);
1959: }
1960: }
1961: } else {
1962: unless (grep(/^\Q$role\E$/,@changed_roles)) {
1963: push(@changed_roles,$role);
1964: }
1965: if ($status_in_db ne 'previous') {
1966: if ($role eq 'gr') {
1967: $newgroup{$rolekey} = $status_in_db;
1968: if ($status_in_db eq 'active') {
1969: unless (ref($courseroles{$udom}) eq 'HASH') {
1970: %{$courseroles{$udom}} =
1971: &Apache::lonnet::get_my_roles('','','userroles',
1972: ['active'],\@possroles,
1973: [$udom],1);
1974: }
1975: &Apache::lonnet::get_groups_roles($udom,$uname,
1976: $courseroles{$udom},
1977: \@rolecodes,\%groups_roles);
1978: }
1979: } else {
1980: $newrole{$rolekey} = $status_in_db;
1981: }
1982: }
1983: }
1984: } else {
1985: my ($currstart,$currend) = split(/\./,$env{$envkey});
1986: if ($role eq 'gr') {
1987: if (&curr_role_status($currstart,$currend,$refresh,$update) ne 'previous') {
1988: $hasgroups = 1;
1989: }
1990: }
1991: if (($currstart ne $tstart) || ($currend ne $tend)) {
1992: my $status_in_env =
1993: &curr_role_status($currstart,$currend,$refresh,$update);
1994: my $status_in_db =
1995: &curr_role_status($tstart,$tend,$now,$now);
1996: if ($status_in_env ne $status_in_db) {
1997: if ($status_in_env eq 'active') {
1998: if ($role eq 'st') {
1999: if ($env{'request.role'} eq $rolekey) {
2000: my $switchsection;
2001: unless (ref($courseroles{$udom}) eq 'HASH') {
2002: %{$courseroles{$udom}} =
2003: &Apache::lonnet::get_my_roles('','','userroles',
2004: ['active'],
2005: \@possroles,[$udom],1);
2006: }
2007: foreach my $crsrole (keys(%{$courseroles{$udom}})) {
2008: if ($crsrole =~ /^\Q$uname\E:\Q$udom\E:st/) {
2009: $switchsection = 1;
2010: last;
2011: }
2012: }
2013: if ($switchsection) {
2014: if ($section eq '') {
2015: $oldsec = 'none';
2016: } else {
2017: $oldsec = $section;
2018: }
2019: &gather_roleprivs(\%allroles,\%allgroups,\%userroles,$where,$role,$tstart,$tend,$status_in_db);
2020: } else {
2021: $currrole_expired = 1;
2022: next;
2023: }
2024: }
2025: }
2026: unless ($rolekey eq $env{'request.role'}) {
2027: if ($role eq 'gr') {
2028: &Apache::lonnet::delete_env_groupprivs($where,\%courseroles,\@possroles);
2029: } else {
2030: &Apache::lonnet::delenv("user.priv.$rolekey",undef,[$role]);
2031: &Apache::lonnet::delenv("user.priv.cm.$where",undef,['cm']);
2032: }
2033: &gather_roleprivs(\%allroles,\%allgroups,\%userroles,$where,$role,$tstart,$tend,$status_in_db);
2034: }
2035: } elsif ($status_in_db eq 'active') {
2036: if (($role eq 'st') &&
2037: ($env{'request.role'} =~ m{^\Q$role\E\.\Q/$udom/$uname\E})) {
2038: if ($section eq '') {
2039: push(@newsec,'none');
2040: } else {
2041: push(@newsec,$section);
2042: }
2043: } elsif ($role eq 'gr') {
2044: unless (ref($courseroles{$udom}) eq 'HASH') {
2045: %{$courseroles{$udom}} =
2046: &Apache::lonnet::get_my_roles('','','userroles',
2047: ['active'],
2048: \@possroles,[$udom],1);
2049: }
2050: &Apache::lonnet::get_groups_roles($udom,$uname,
2051: $courseroles{$udom},
2052: \@rolecodes,\%groups_roles);
2053: }
2054: &gather_roleprivs(\%allroles,\%allgroups,\%userroles,$where,$role,$tstart,$tend,$status_in_db);
2055: }
2056: unless (grep(/^\Q$role\E$/,@changed_roles)) {
2057: push(@changed_roles,$role);
2058: }
2059: if ($role eq 'gr') {
2060: $groupchange{"/$udom/$uname"}{$group} = $status_in_db;
2061: } else {
2062: $rolechange{$rolekey} = $status_in_db;
2063: }
2064: }
2065: } else {
2066: if ($role eq 'gr') {
2067: unless ($checkedgroup{$where}) {
2068: my $status_in_db =
2069: &curr_role_status($tstart,$tend,$refresh,$now);
2070: if ($tstart eq '-1') {
2071: $status_in_db = 'deleted';
2072: }
2073: unless (ref($courseroles{$udom}) eq 'HASH') {
2074: %{$courseroles{$udom}} =
2075: &Apache::lonnet::get_my_roles('','','userroles',
2076: ['active'],
2077: \@possroles,[$udom],1);
2078: }
2079: if (ref($courseroles{$udom}) eq 'HASH') {
2080: foreach my $item (keys(%{$courseroles{$udom}})) {
2081: next unless ($item =~ /^\Q$uname\E/);
2082: my ($cnum,$cdom,$crsrole,$crssec) = split(/:/,$item);
2083: my $area = '/'.$cdom.'/'.$cnum;
2084: if ($crssec ne '') {
2085: $area .= '/'.$crssec;
2086: }
2087: my $crsrolekey = $crsrole.'.'.$area;
2088: my $currprivs = $env{'user.priv.'.$crsrole.'.'.$area.'.'.$where};
2089: $currprivs =~ s/^://;
2090: $currprivs =~ s/\&F$//;
2091: my @curr_grp_privs = split(/\&F:/,$currprivs);
2092: @curr_grp_privs = sort(@curr_grp_privs);
2093: my @diffs;
2094: if (@group_privs > 0 || @curr_grp_privs > 0) {
2095: @diffs = &Apache::loncommon::compare_arrays(\@group_privs,\@curr_grp_privs);
2096: }
2097: if (@diffs == 0) {
2098: last;
2099: } else {
2100: unless(grep(/^\Qgr\E$/,@rolecodes)) {
2101: push(@rolecodes,'gr');
2102: }
2103: &gather_roleprivs(\%allroles,\%allgroups,
2104: \%userroles,$where,$role,
2105: $tstart,$tend,$status_in_db);
2106: if ($status_in_db eq 'active') {
2107: &Apache::lonnet::get_groups_roles($udom,$uname,
2108: $courseroles{$udom},
2109: \@rolecodes,\%groups_roles);
2110: }
2111: $changed_groups{$udom.'_'.$uname}{$group} = $status_in_db;
2112: last;
2113: }
2114: }
2115: }
2116: $checkedgroup{$where} = 1;
2117: }
2118: } elsif ($role =~ /^cr/) {
2119: my $status_in_db =
2120: &curr_role_status($tstart,$tend,$refresh,$now);
2121: my ($rdummy,$rest) = split(/\//,$role,2);
2122: my %currpriv;
2123: unless (exists($crprivs{$rest})) {
2124: my ($rdomain,$rauthor,$rrole)=split(/\//,$rest);
2125: my $homsvr=&Apache::lonnet::homeserver($rauthor,$rdomain);
2126: if (&Apache::lonnet::hostname($homsvr) ne '') {
2127: my ($rdummy,$roledef)=
2128: &Apache::lonnet::get('roles',["rolesdef_$rrole"],
2129: $rdomain,$rauthor);
2130: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
2131: my $i = 0;
2132: my @scopes = ('sys','dom','crs');
2133: my @privs = split(/\_/,$roledef);
2134: foreach my $priv (@privs) {
2135: my ($blank,@prv) = split(/:/,$priv);
2136: @prv = map { $_ .= (/\&\w+$/ ? '':'&F') } @prv;
2137: if (@prv) {
2138: $priv = ':'.join(':',sort(@prv));
2139: }
2140: $crprivs{$rest}{$scopes[$i]} = $priv;
2141: $i++;
2142: }
2143: }
2144: }
2145: }
2146: my $status_in_env =
2147: &curr_role_status($currstart,$currend,$refresh,$update);
2148: if ($status_in_env eq 'active') {
2149: $currpriv{sys} = $env{"user.priv.$rolekey./"};
2150: $currpriv{dom} = $env{"user.priv.$rolekey./$udom/"};
2151: $currpriv{crs} = $env{"user.priv.$rolekey.$where"};
2152: if (keys(%crprivs)) {
2153: if (($crprivs{$rest}{sys} ne $currpriv{sys}) ||
2154: ($crprivs{$rest}{dom} ne $currpriv{dom})
2155: ||
2156: ($crprivs{$rest}{crs} ne $currpriv{crs})) {
2157: &gather_roleprivs(\%allroles,\%allgroups,
2158: \%userroles,$where,$role,
2159: $tstart,$tend,$status_in_db);
2160: unless (grep(/^\Q$role\E$/,@changed_roles)) {
2161: push(@changed_roles,$role);
2162: }
2163: $customprivchg{$rolekey} = $status_in_env;
2164: }
2165: }
2166: }
2167: }
2168: }
2169: }
2170: }
2171: foreach my $envkey (keys(%env)) {
2172: next unless ($envkey =~ /^user\.role\./);
2173: next if ($dbroles{$envkey});
2174: next if ($envkey eq 'user.role.'.$env{'request.role'});
2175: my ($currstart,$currend) = split(/\./,$env{$envkey});
2176: my $status_in_env =
2177: &curr_role_status($currstart,$currend,$refresh,$update);
2178: my ($rolekey) = ($envkey =~ /^user\.role\.(.+)$/);
2179: my ($role,$rest)=split(m{\./},$rolekey,2);
2180: $rest = '/'.$rest;
2181: if (&Apache::lonnet::delenv($envkey,undef,[$role])) {
2182: if ($status_in_env eq 'active') {
2183: if ($role eq 'gr') {
2184: &Apache::lonnet::delete_env_groupprivs($rest,\%courseroles,
2185: \@possroles);
2186: } else {
2187: &Apache::lonnet::delenv("user.priv.$rolekey",undef,[$role]);
2188: &Apache::lonnet::delenv("user.priv.cm.$rest",undef,['cm']);
2189: }
2190: unless (grep(/^\Q$role\E$/,@changed_roles)) {
2191: push(@changed_roles,$role);
2192: }
2193: $deletedroles{$rolekey} = 1;
2194: }
2195: }
2196: }
2197: if (($oldsec) && (@newsec > 0)) {
2198: if (@newsec > 1) {
2199: $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>';
2200: } else {
2201: my $newrole = $env{'request.role'};
2202: if ($newsec[0] eq 'none') {
2203: $newrole =~ s{(/[^/])$}{};
2204: } elsif ($oldsec eq 'none') {
2205: $newrole .= '/'.$newsec[0];
2206: } else {
2207: $newrole =~ s{([^/]+)$}{$newsec[0]};
2208: }
2209: my $coursedesc = $env{'course.'.$env{'request.course.id'}.'.description'};
2210: my ($curr_role) = ($env{'request.role'} =~ m{^(\w+)\./$match_domain/$match_courseid});
2211: my %temp=('logout_'.$env{'request.course.id'} => time);
2212: &Apache::lonnet::put('email_status',\%temp);
2213: &Apache::lonnet::delenv('user.state.'.$env{'request.course.id'});
2214: &Apache::lonnet::appenv({"request.course.id" => '',
2215: "request.course.fn" => '',
2216: "request.course.uri" => '',
2217: "request.course.sec" => '',
2218: "request.role" => 'cm',
2219: "request.role.adv" => $env{'user.adv'},
2220: "request.role.domain" => $env{'user.domain'}});
2221: my $rolename = &Apache::loncommon::plainname($curr_role);
2222: $msg = '<p><form name="reselectrole" action="/adm/roles" method="post" />'.
2223: '<input type="hidden" name="newrole" value="" />'.
2224: '<input type="hidden" name="selectrole" value="1" />'.
2225: '<span class="LC_info">'.
2226: &mt('Your section has changed for your current [_1] role in [_2].',$rolename,$coursedesc).'</span><br />';
2227: my $button = '<input type="button" name="sectionchanged" value="'.
2228: &mt('Re-Select').'" onclick="javascript:enterrole(this.form,'."'$newrole','sectionchanged'".')" />';
2229: if ($newsec[0] eq 'none') {
2230: $msg .= &mt('[_1] to continue with your new section-less role.',$button);
2231: } else {
2232: $msg .= &mt('[_1] to continue with your new role in section ([_2]).',$button,$newsec[0]);
2233: }
2234: $msg .= '</form></p>';
2235: }
2236: } elsif ($currrole_expired) {
2237: $msg .= '<p class="LC_warning">';
2238: if (&Apache::loncommon::show_course()) {
2239: $msg .= &mt('Your role in the current course has expired.');
2240: } else {
2241: $msg .= &mt('Your current role has expired.');
2242: }
2243: $msg .= '<br />'.&mt('However you can continue to use this role until you logout, click the "Re-Select" button, or your session has been idle for more than 24 hours.').'</p>';
2244: }
2245: &Apache::lonnet::set_userprivs(\%userroles,\%allroles,\%allgroups,\%groups_roles);
2246: my ($curr_is_adv,$curr_role_adv,$curr_author,$curr_role_author);
2247: $curr_author = $env{'user.author'};
2248: if (($env{'request.role'} =~/^au/) || ($env{'request.role'} =~/^ca/) ||
2249: ($env{'request.role'} =~/^aa/)) {
2250: $curr_role_author=1;
2251: }
2252: $curr_is_adv = $env{'user.adv'};
2253: $curr_role_adv = $env{'request.role.adv'};
2254: if (keys(%userroles) > 0) {
2255: foreach my $role (@changed_roles) {
2256: unless(grep(/^\Q$role\E$/,@rolecodes)) {
2257: push(@rolecodes,$role);
2258: }
2259: }
2260: unless(grep(/^\Qcm\E$/,@rolecodes)) {
2261: push(@rolecodes,'cm');
2262: }
2263: &Apache::lonnet::appenv(\%userroles,\@rolecodes);
2264: }
2265: my %newenv;
2266: if (&Apache::lonnet::is_advanced_user($env{'user.domain'},$env{'user.name'})) {
2267: unless ($curr_is_adv) {
2268: $newenv{'user.adv'} = 1;
2269: }
2270: } elsif ($curr_is_adv && !$curr_role_adv) {
2271: &Apache::lonnet::delenv('user.adv');
2272: }
2273: my %authorroleshash =
2274: &Apache::lonnet::get_my_roles('','','userroles',['active'],['au','ca','aa']);
2275: if (keys(%authorroleshash)) {
2276: unless ($curr_author) {
2277: $newenv{'user.author'} = 1;
2278: }
2279: } elsif ($curr_author && !$curr_role_author) {
2280: &Apache::lonnet::delenv('user.author');
2281: }
2282: if ($env{'request.course.id'}) {
2283: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
2284: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
2285: my (@activecrsgroups,$crsgroupschanged);
2286: if ($env{'request.course.groups'}) {
2287: @activecrsgroups = split(/:/,$env{'request.course.groups'});
2288: foreach my $item (keys(%deletedroles)) {
2289: if ($item =~ m{^gr\./\Q$cdom\E/\Q$cnum\E/(\w+)$}) {
2290: if (grep(/^\Q$1\E$/,@activecrsgroups)) {
2291: $crsgroupschanged = 1;
2292: last;
2293: }
2294: }
2295: }
2296: }
2297: unless ($crsgroupschanged) {
2298: foreach my $item (keys(%newgroup)) {
2299: if ($item =~ m{^gr\./\Q$cdom\E/\Q$cnum\E/(\w+)$}) {
2300: if ($newgroup{$item} eq 'active') {
2301: $crsgroupschanged = 1;
2302: last;
2303: }
2304: }
2305: }
2306: }
2307: if ((ref($changed_groups{$env{'request.course.id'}}) eq 'HASH') ||
2308: (ref($groupchange{"/$cdom/$cnum"}) eq 'HASH') ||
2309: ($crsgroupschanged)) {
2310: my %grouproles = &Apache::lonnet::get_my_roles('','','userroles',
2311: ['active'],['gr'],[$cdom],1);
2312: my @activegroups;
2313: foreach my $item (keys(%grouproles)) {
2314: next unless($item =~ /^\Q$cnum\E:\Q$cdom\E/);
2315: my $group;
2316: my ($crsn,$crsd,$role,$remainder) = split(/:/,$item,4);
2317: if ($remainder =~ /:/) {
2318: (my $other,$group) = ($remainder =~ /^([\w:]+):([^:]+)$/);
2319: } else {
2320: $group = $remainder;
2321: }
2322: if ($group ne '') {
2323: push(@activegroups,$group);
2324: }
2325: }
2326: $newenv{'request.course.groups'} = join(':',@activegroups);
2327: }
2328: }
2329: if (keys(%newenv)) {
2330: &Apache::lonnet::appenv(\%newenv);
2331: }
2332: if (!@changed_roles || !(keys(%changed_groups))) {
2333: my ($rolesmsg,$groupsmsg);
2334: if (!@changed_roles) {
2335: if (&Apache::loncommon::show_course()) {
2336: $rolesmsg = &mt('No new courses or communities');
2337: } else {
2338: $rolesmsg = &mt('No role changes');
2339: }
2340: }
2341: if ($hasgroups && !(keys(%changed_groups)) && !(grep(/gr/,@changed_roles))) {
2342: $groupsmsg = &mt('No changes in course/community groups');
2343: }
2344: if (!@changed_roles && !(keys(%changed_groups))) {
2345: if (($msg ne '') || ($groupsmsg ne '')) {
2346: $msg .= '<ul>';
2347: if ($rolesmsg) {
2348: $msg .= '<li>'.$rolesmsg.'</li>';
2349: }
2350: if ($groupsmsg) {
2351: $msg .= '<li>'.$groupsmsg.'</li>';
2352: }
2353: $msg .= '</ul>';
2354: } else {
2355: $msg = ' <span class="LC_cusr_emph">'.$rolesmsg.'</span><br />';
2356: }
2357: return $msg;
2358: }
2359: }
2360: my $changemsg;
2361: if (@changed_roles > 0) {
2362: if (keys(%newgroup) > 0) {
2363: my $groupmsg;
2364: my (%curr_groups,%groupdescs,$currcrs);
2365: foreach my $item (sort(keys(%newgroup))) {
2366: if (&is_active_course($item,$refresh,$update,\%roleshash)) {
2367: if ($item =~ m{^gr\./($match_domain/$match_courseid)/(\w+)$}) {
2368: my ($cdom,$cnum) = split(/\//,$1);
2369: my $group = $2;
2370: if ($currcrs ne $cdom.'_'.$cnum) {
2371: if ($currcrs) {
2372: $groupmsg .= '</ul><li>';
2373: }
2374: $groupmsg .= '<li><b>'.
2375: $env{'course.'.$cdom.'_'.$cnum.'.description'}.'</b><ul>';
2376: $currcrs = $cdom.'_'.$cnum;
2377: }
2378: my $groupdesc;
2379: unless (ref($curr_groups{$cdom.'_'.$cnum}) eq 'HASH') {
2380: %{$curr_groups{$cdom.'_'.$cnum}} =
2381: &Apache::longroup::coursegroups($cdom,$cnum);
2382: }
2383: unless ((ref($groupdescs{$cdom.'_'.$cnum}) eq 'HASH') &&
2384: ($groupdescs{$cdom.'_'.$cnum}{$group})) {
2385:
2386: my %groupinfo =
2387: &Apache::longroup::get_group_settings($curr_groups{$cdom.'_'.$cnum}{$group});
2388: $groupdescs{$cdom.'_'.$cnum}{$group} =
2389: &unescape($groupinfo{'description'});
2390: }
2391: $groupdesc = $groupdescs{$cdom.'_'.$cnum}{$group};
2392: if ($groupdesc) {
2393: $groupmsg .= '<li>'.
2394: &mt('[_1] with status: [_2].',
2395: '<b>'.$groupdesc.'</b>',$newgroup{$item}).'</li>';
2396: }
2397: }
2398: }
2399: if ($groupmsg) {
2400: $groupmsg .= '</ul></li>';
2401: }
2402: }
2403: if ($groupmsg) {
2404: $changemsg .= '<li>'.
2405: &mt('Courses with new groups').'</li>'.
2406: '<ul>'.$groupmsg.'</ul></li>';
2407: }
2408: }
2409: if (keys(%newrole) > 0) {
2410: my $newmsg;
2411: foreach my $item (sort(keys(%newrole))) {
2412: my $desc = &role_desc($item,$update,$refresh,$now);
2413: if ($desc) {
2414: $newmsg .= '<li>'.
2415: &mt('[_1] with status: [_2].',
2416: $desc,&mt($newrole{$item})).'</li>';
2417: }
2418: }
2419: if ($newmsg) {
2420: $changemsg .= '<li>'.&mt('New roles').
2421: '<ul>'.$newmsg.'</ul>'.
2422: '</li>';
2423: }
2424: }
2425: if (keys(%customprivchg) > 0) {
2426: my $privmsg;
2427: foreach my $item (sort(keys(%customprivchg))) {
2428: my $desc = &role_desc($item,$update,$refresh,$now);
2429: if ($desc) {
2430: $privmsg .= '<li>'.$desc.'</li>';
2431: }
2432: }
2433: if ($privmsg) {
2434: $changemsg .= '<li>'.
2435: &mt('Custom roles with privilege changes').
2436: '<ul>'.$privmsg.'</ul>'.
2437: '</li>';
2438: }
2439: }
2440: if (keys(%rolechange) > 0) {
2441: my $rolemsg;
2442: foreach my $item (sort(keys(%rolechange))) {
2443: my $desc = &role_desc($item,$update,$refresh,$now);
2444: if ($desc) {
2445: $rolemsg .= '<li>'.
2446: &mt('[_1] status now: [_2].',$desc,
2447: $rolechange{$item}).'</li>';
2448: }
2449: }
2450: if ($rolemsg) {
2451: $changemsg .= '<li>'.
2452: &mt('Existing roles with status changes').'</li>'.
2453: '<ul>'.$rolemsg.'</ul>'.
2454: '</li>';
2455: }
2456: }
2457: if (keys(%deletedroles) > 0) {
2458: my $delmsg;
2459: foreach my $item (sort(keys(%deletedroles))) {
2460: my $desc = &role_desc($item,$update,$refresh,$now);
2461: if ($desc) {
2462: $delmsg .= '<li>'.$desc.'</li>';
2463: }
2464: }
2465: if ($delmsg) {
2466: $changemsg .= '<li>'.
2467: &mt('Existing roles now expired').'</li>'.
2468: '<ul>'.$delmsg.'</ul>'.
2469: '</li>';
2470: }
2471: }
2472: }
2473: if ((keys(%changed_groups) > 0) || (keys(%groupchange) > 0)) {
2474: my $groupchgmsg;
2475: foreach my $key (sort(keys(%changed_groups))) {
2476: my $crs = 'gr/'.$key;
2477: $crs =~ s/_/\//;
2478: if (&is_active_course($crs,$refresh,$update,\%roleshash)) {
2479: if (ref($changed_groups{$key}) eq 'HASH') {
2480: my @showgroups;
2481: foreach my $group (sort(keys(%{$changed_groups{$key}}))) {
2482: if ($changed_groups{$key}{$group} eq 'active') {
2483: push(@showgroups,$group);
2484: }
2485: }
2486: if (@showgroups > 0) {
2487: $groupchgmsg .= '<li>'.
2488: &mt('Course: [_1], groups: [_2].',$key,
2489: join(', ',@showgroups)).
2490: '</li>';
2491: }
2492: }
2493: }
2494: }
2495: if (keys(%groupchange) > 0) {
2496: $groupchgmsg .= '<li>'.
2497: &mt('Existing course/community groups with status changes').'</li>'.
2498: '<ul>';
2499: foreach my $crs (sort(keys(%groupchange))) {
2500: my $cid = $crs;
2501: $cid=~s{^/}{};
2502: $cid=~s{/}{_};
2503: my $crsdesc = $env{'course.'.$cid.'.description'};
2504: my $cdom = $env{'course.'.$cid.'.domain'};
2505: my $cnum = $env{'course.'.$cid.'.num'};
2506: my %curr_groups = &Apache::longroup::coursegroups($cdom,$cnum);
2507: my %groupdesc;
2508: if (ref($groupchange{$crs}) eq 'HASH') {
2509: $groupchgmsg .= '<li>'.&mt('Course/Community: [_1]','<b>'.$crsdesc.'</b><ul>');
2510: foreach my $group (sort(keys(%{$groupchange{$crs}}))) {
2511: unless ($groupdesc{$group}) {
2512: my %groupinfo = &Apache::longroup::get_group_settings($curr_groups{$group});
2513: $groupdesc{$group} = &unescape($groupinfo{'description'});
2514: }
2515: $groupchgmsg .= '<li>'.&mt('Group: [_1] status now: [_2].','<b>'.$groupdesc{$group}.'</b>',$groupchange{$crs}{$group}).'</li>';
2516: }
2517: $groupchgmsg .= '</ul></li>';
2518: }
2519: }
2520: $groupchgmsg .= '</ul></li>';
2521: }
2522: if ($groupchgmsg) {
2523: $changemsg .= '<li>'.
2524: &mt('Courses with changes in groups').'</li>'.
2525: '<ul>'.$groupchgmsg.'</ul></li>';
2526: }
2527: }
2528: if ($changemsg) {
2529: $msg .= '<ul>'.$changemsg.'</ul>';
2530: } else {
2531: if (&Apache::loncommon::show_course()) {
2532: $msg = &mt('No new courses or communities');
2533: } else {
2534: $msg = &mt('No role changes');
2535: }
2536: }
2537: return $msg;
2538: }
2539:
2540: sub role_desc {
2541: my ($item,$update,$refresh,$now) = @_;
2542: my ($where,$trolecode,$role,$tstatus,$tend,$tstart,$twhere,
2543: $trole,$tremark);
2544: &Apache::lonnet::role_status('user.role.'.$item,$update,$refresh,
2545: $now,\$role,\$where,\$trolecode,
2546: \$tstatus,\$tstart,\$tend);
2547: return unless ($role);
2548: if ($role =~ /^cr\//) {
2549: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$role);
2550: $tremark = &mt('Custom role defined by [_1].',$rauthor.':'.$rdomain);
2551: }
2552: $trole=Apache::lonnet::plaintext($role);
2553: my ($tdom,$trest,$tsection)=
2554: split(/\//,Apache::lonnet::declutter($where));
2555: if (($role eq 'ca') || ($role eq 'aa')) {
2556: my $home = &Apache::lonnet::homeserver($trest,$tdom);
2557: $home = &Apache::lonnet::hostname($home);
2558: $twhere=&mt('User').': '.$trest.' '.&mt('Domain').
2559: ': '.$tdom.' '.&mt('Server').': '.$home;
2560: } elsif ($role eq 'au') {
2561: my $home = &Apache::lonnet::homeserver
2562: ($env{'user.name'},$env{'user.domain'});
2563: $home = &Apache::lonnet::hostname($home);
2564: $twhere=&mt('Domain').': '.$tdom.' '.&mt('Server').
2565: ': '.$home;
2566: } elsif ($trest) {
2567: my $tcourseid=$tdom.'_'.$trest;
2568: my $crstype = &Apache::loncommon::course_type($tcourseid);
2569: $trole = &Apache::lonnet::plaintext($role,$crstype,$tcourseid);
2570: if ($env{'course.'.$tcourseid.'.description'}) {
2571: $twhere=$env{'course.'.$tcourseid.'.description'};
2572: } else {
2573: my %newhash=&Apache::lonnet::coursedescription($tcourseid);
2574: if (%newhash) {
2575: $twhere=$newhash{'description'};
2576: } else {
2577: $twhere=&mt('Currently not available');
2578: }
2579: }
2580: if ($tsection) {
2581: $twhere.= ' '.&mt('Section').': '.$tsection;
2582: }
2583: if ($role ne 'st') {
2584: $twhere.= ' '.&mt('Domain').': '.$tdom;
2585: }
2586: } elsif ($tdom) {
2587: $twhere = &mt('Domain').': '.$tdom;
2588: }
2589: my $output;
2590: if ($trole) {
2591: $output = $trole;
2592: if ($twhere) {
2593: $output .= " -- $twhere";
2594: }
2595: if ($tremark) {
2596: $output .= '<br />'.$tremark;
2597: }
2598: }
2599: return $output;
2600: }
2601:
2602: sub curr_role_status {
2603: my ($start,$end,$refresh,$update) = @_;
2604: if (($start) && ($start<0)) { return 'deleted' };
2605: my $status = 'active';
2606: if (($end) && ($end<=$update)) {
2607: $status = 'previous';
2608: }
2609: if (($start) && ($refresh<$start)) {
2610: $status = 'future';
2611: }
2612: return $status;
2613: }
2614:
2615: sub gather_roleprivs {
2616: my ($allroles,$allgroups,$userroles,$area,$role,$tstart,$tend,$status) = @_;
2617: return unless ((ref($allroles) eq 'HASH') && (ref($allgroups) eq 'HASH') && (ref($userroles) eq 'HASH'));
2618: if (($area ne '') && ($role ne '')) {
2619: &Apache::lonnet::userrolelog($role,$env{'user.name'},$env{'user.domain'},
2620: $area,$tstart,$tend);
2621: my $spec=$role.'.'.$area;
2622: $userroles->{'user.role.'.$spec} = $tstart.'.'.$tend;
2623: my ($tdummy,$tdomain,$trest)=split(/\//,$area);
2624: if ($status eq 'active') {
2625: if ($role =~ /^cr\//) {
2626: &Apache::lonnet::custom_roleprivs($allroles,$role,$tdomain,$trest,$spec,$area);
2627: } elsif ($role eq 'gr') {
2628: my %rolehash = &Apache::lonnet::get('roles',[$area.'_'.$role],
2629: $env{'user.domain'},
2630: $env{'user.name'});
2631: my ($trole) = split(/_/,$rolehash{$area.'_'.$role},2);
2632: (undef,my $group_privs) = split(/\//,$trole);
2633: $group_privs = &unescape($group_privs);
2634: &Apache::lonnet::group_roleprivs($allgroups,$area,$group_privs,$tend,$tstart);
2635: } else {
2636: &Apache::lonnet::standard_roleprivs($allroles,$role,$tdomain,$spec,$trest,$area);
2637: }
2638: }
2639: }
2640: return;
2641: }
2642:
2643: sub is_active_course {
2644: my ($rolekey,$refresh,$update,$roleshashref) = @_;
2645: return unless(ref($roleshashref) eq 'HASH');
2646: my ($role,$cdom,$cnum) = split(/\//,$rolekey);
2647: my $is_active;
2648: foreach my $key (keys(%{$roleshashref})) {
2649: if ($key =~ /^\Q$cnum\E:\Q$cdom\E:/) {
2650: my ($tstart,$tend) = split(/:/,$roleshashref->{$key});
2651: my $status = &curr_role_status($tstart,$tend,$refresh,$update);
2652: if ($status eq 'active') {
2653: $is_active = 1;
2654: last;
2655: }
2656: }
2657: }
2658: return $is_active;
2659: }
2660:
2661: sub get_roles_functions {
2662: my ($rolescount,$cattype) = @_;
2663: my @links;
2664: push(@links,["javascript:rolesView('doupdate');",'start-here-22x22',&mt('Check for changes')]);
2665: if ($env{'environment.canrequest.author'}) {
2666: unless (&Apache::loncoursequeueadmin::is_active_author()) {
2667: push(@links,["javascript:rolesView('requestauthor');",'list-add-22x22',&mt('Request author role')]);
2668: }
2669: }
2670: if (($rolescount > 3) || ($env{'environment.recentroles'})) {
2671: push(@links,['/adm/preferences?action=changerolespref&returnurl=/adm/roles','role_hotlist-22x22',&mt('Hotlist')]);
2672: }
2673: if (&Apache::lonmenu::check_for_rcrs()) {
2674: push(@links,['/adm/requestcourse','rcrs-22x22',&mt('Request course')]);
2675: }
2676: if ($env{'form.state'} eq 'queued') {
2677: push(@links,["javascript:rolesView('noqueued');",'selfenrl-queue-22x22',&mt('Hide queued')]);
2678: } else {
2679: push(@links,["javascript:rolesView('queued');",'selfenrl-queue-22x22',&mt('Show queued')]);
2680: }
2681: if ($env{'user.adv'}) {
2682: if ($env{'form.display'} eq 'showall') {
2683: push(@links,["javascript:rolesView('noshowall');",'edit-redo-22x22',&mt('Exclude expired')]);
2684: } else {
2685: push(@links,["javascript:rolesView('showall');",'edit-undo-22x22',&mt('Include expired')]);
2686: }
2687: }
2688: unless ($cattype eq 'none') {
2689: push(@links,['/adm/coursecatalog','ccat-22x22',&mt('Course catalog')]);
2690: }
2691: my $funcs = &Apache::lonhtmlcommon::start_funclist();
2692: foreach my $link (@links) {
2693: $funcs .= &Apache::lonhtmlcommon::add_item_funclist(
2694: '<a href="'.$link->[0].'" class="LC_menubuttons_link">'.
2695: '<img src="/res/adm/pages/'.$link->[1].'.png" class="LC_icon" alt="'.$link->[2].'" />'.
2696: $link->[2].'</a>');
2697: }
2698: $funcs .= &Apache::lonhtmlcommon::end_funclist();
2699: return &Apache::loncommon::head_subbox($funcs);
2700: }
2701:
2702: sub get_queued {
2703: my ($output,%reqcrs);
2704: my ($types,$typenames) = &Apache::loncommon::course_types();
2705: my %statusinfo = &Apache::lonnet::dump('courserequests',$env{'user.domain'},
2706: $env{'user.name'},'^status:');
2707: foreach my $key (keys(%statusinfo)) {
2708: next unless (($statusinfo{$key} eq 'approval') || ($statusinfo{$key} eq 'pending'));
2709: (undef,my($cdom,$cnum)) = split(/:/,$key);
2710: my $requestkey = $cdom.'_'.$cnum;
2711: if ($requestkey =~ /^($match_domain)_($match_courseid)$/) {
2712: my %history = &Apache::lonnet::restore($requestkey,'courserequests',
2713: $env{'user.domain'},$env{'user.name'});
2714: next if ((exists($history{'status'})) && ($history{'status'} eq 'created'));
2715: my $reqtime = $history{'reqtime'};
2716: my $lastupdate = $history{'timestamp'};
2717: my $showtype = $history{'crstype'};
2718: if (defined($typenames->{$history{'crstype'}})) {
2719: $showtype = $typenames->{$history{'crstype'}};
2720: }
2721: my $description;
2722: if (ref($history{'details'}) eq 'HASH') {
2723: $description = $history{details}{'cdescr'};
2724: }
2725: @{$reqcrs{$reqtime}} = ($description,$showtype);
2726: }
2727: }
2728: my @sortedtimes = sort {$a <=> $b} (keys(%reqcrs));
2729: if (@sortedtimes > 0) {
2730: $output .= '<p><b>'.&mt('Course/Community requests').'</b><br />'.
2731: &Apache::loncommon::start_data_table().
2732: &Apache::loncommon::start_data_table_header_row().
2733: '<th>'.&mt('Date requested').'</th>'.
2734: '<th>'.&mt('Course title').'</th>'.
2735: '<th>'.&mt('Course type').'</th>';
2736: &Apache::loncommon::end_data_table_header_row();
2737: foreach my $reqtime (@sortedtimes) {
2738: next unless (ref($reqcrs{$reqtime}) eq 'ARRAY');
2739: $output .= &Apache::loncommon::start_data_table_row().
2740: '<td>'.&Apache::lonlocal::locallocaltime($reqtime).'</td>'.
2741: '<td>'.join('</td><td>',@{$reqcrs{$reqtime}}).'</td>'.
2742: &Apache::loncommon::end_data_table_row();
2743: }
2744: $output .= &Apache::loncommon::end_data_table().
2745: '<br /></p>';
2746: }
2747: my $queuedselfenroll = &Apache::loncoursequeueadmin::queued_selfenrollment(1);
2748: if ($queuedselfenroll) {
2749: $output .= '<p><b>'.&mt('Enrollment requests').'</b><br />'.
2750: $queuedselfenroll.'<br /></p>';
2751: }
2752: if ($env{'environment.canrequest.author'}) {
2753: unless (&Apache::loncoursequeueadmin::is_active_author()) {
2754: my $requestauthor;
2755: my ($status,$timestamp) = split(/:/,$env{'environment.requestauthorqueued'});
2756: if (($status eq 'approval') || ($status eq 'approved')) {
2757: $output .= '<p><b>'.&mt('Author role request').'</b><br />';
2758: if ($status eq 'approval') {
2759: $output .= &mt('A request for Authoring Space submitted on [_1] is awaiting approval',
2760: &Apache::lonlocal::locallocaltime($timestamp));
2761: } elsif ($status eq 'approved') {
2762: my %roleshash =
2763: &Apache::lonnet::get_my_roles($env{'user.name'},$env{'user.domain'},'userroles',
2764: ['active'],['au'],[$env{'user.domain'}]);
2765: if (keys(%roleshash)) {
2766: $output .= '<span class="LC_info">'.
2767: &mt('Your request for an author role has been approved.').'<br />'.
2768: &mt('Use the "Check for changes" link to update your list of roles.').
2769: '</span>';
2770: }
2771: }
2772: $output .= '</p>';
2773: }
2774: }
2775: }
2776: unless ($output) {
2777: if ($env{'environment.canrequest.author'} || $env{'environment.canrequest.official'} ||
2778: $env{'environment.canrequest.unofficial'} || $env{'environment.canrequest.community'}) {
2779: $output = &mt('No requests for courses, communities or authoring currently queued');
2780: } else {
2781: $output = &mt('No enrollment requests currently queued awaiting approval');
2782: }
2783: }
2784: return '<div class="LC_left_float"><fieldset><legend>'.&mt('Queued requests').'</legend>'.
2785: $output.'</fieldset></div><br clear="all" />';
2786: }
2787:
2788: 1;
2789: __END__
2790:
2791: =head1 NAME
2792:
2793: Apache::lonroles - User Roles Screen
2794:
2795: =head1 SYNOPSIS
2796:
2797: Invoked by /etc/httpd/conf/srm.conf:
2798:
2799: <Location /adm/roles>
2800: PerlAccessHandler Apache::lonacc
2801: SetHandler perl-script
2802: PerlHandler Apache::lonroles
2803: ErrorDocument 403 /adm/login
2804: ErrorDocument 500 /adm/errorhandler
2805: </Location>
2806:
2807: =head1 OVERVIEW
2808:
2809: =head2 Choosing Roles
2810:
2811: C<lonroles> is a handler that allows a user to switch roles in
2812: mid-session. LON-CAPA attempts to work with "No Role Specified", the
2813: default role that a user has before selecting a role, as widely as
2814: possible, but certain handlers for example need specification which
2815: course they should act on, etc. Both in this scenario, and when the
2816: handler determines via C<lonnet>'s C<&allowed> function that a certain
2817: action is not allowed, C<lonroles> is used as error handler. This
2818: allows the user to select another role which may have permission to do
2819: what they were trying to do.
2820:
2821: =begin latex
2822:
2823: \begin{figure}
2824: \begin{center}
2825: \includegraphics[width=0.45\paperwidth,keepaspectratio]{Sample_Roles_Screen}
2826: \caption{\label{Sample_Roles_Screen}Sample Roles Screen}
2827: \end{center}
2828: \end{figure}
2829:
2830: =end latex
2831:
2832: =head2 Role Initialization
2833:
2834: 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.
2835:
2836: =head1 INTRODUCTION
2837:
2838: This module enables a user to select what role he wishes to
2839: operate under (instructor, student, teaching assistant, course
2840: coordinator, etc). These roles are pre-established by the actions
2841: of upper-level users.
2842:
2843: This is part of the LearningOnline Network with CAPA project
2844: described at http://www.lon-capa.org.
2845:
2846: =head1 HANDLER SUBROUTINE
2847:
2848: This routine is called by Apache and mod_perl.
2849:
2850: =over 4
2851:
2852: =item *
2853:
2854: Roles Initialization (yes/no)
2855:
2856: =item *
2857:
2858: Get Error Message from Environment
2859:
2860: =item *
2861:
2862: Who is this?
2863:
2864: =item *
2865:
2866: Generate Page Output
2867:
2868: =item *
2869:
2870: Choice or no choice
2871:
2872: =item *
2873:
2874: Table
2875:
2876: =item *
2877:
2878: Privileges
2879:
2880: =back
2881:
2882: =cut
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