1: # The LearningOnline Network with CAPA
2: # User Roles Screen
3: #
4: # $Id: lonroles.pm,v 1.256.2.6.2.3 2012/02/09 01:11:52 raeburn Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28: ###
29:
30: =pod
31:
32: =head1 NAME
33:
34: Apache::lonroles - User Roles Screen
35:
36: =head1 SYNOPSIS
37:
38: Invoked by /etc/httpd/conf/srm.conf:
39:
40: <Location /adm/roles>
41: PerlAccessHandler Apache::lonacc
42: SetHandler perl-script
43: PerlHandler Apache::lonroles
44: ErrorDocument 403 /adm/login
45: ErrorDocument 500 /adm/errorhandler
46: </Location>
47:
48: =head1 OVERVIEW
49:
50: =head2 Choosing Roles
51:
52: C<lonroles> is a handler that allows a user to switch roles in
53: mid-session. LON-CAPA attempts to work with "No Role Specified", the
54: default role that a user has before selecting a role, as widely as
55: possible, but certain handlers for example need specification which
56: course they should act on, etc. Both in this scenario, and when the
57: handler determines via C<lonnet>'s C<&allowed> function that a certain
58: action is not allowed, C<lonroles> is used as error handler. This
59: allows the user to select another role which may have permission to do
60: what they were trying to do.
61:
62: =begin latex
63:
64: \begin{figure}
65: \begin{center}
66: \includegraphics[width=0.45\paperwidth,keepaspectratio]{Sample_Roles_Screen}
67: \caption{\label{Sample_Roles_Screen}Sample Roles Screen}
68: \end{center}
69: \end{figure}
70:
71: =end latex
72:
73: =head2 Role Initialization
74:
75: The privileges for a user are established at login time and stored in the session environment. As a consequence, a new role does not become active till the next login. Handlers are able to query for privileges using C<lonnet>'s C<&allowed> function. When a user first logs in, their role is the "common" role, which means that they have the sum of all of their privileges. During a session it might become necessary to choose a particular role, which as a consequence also limits the user to only the privileges in that particular role.
76:
77: =head1 INTRODUCTION
78:
79: This module enables a user to select what role he wishes to
80: operate under (instructor, student, teaching assistant, course
81: coordinator, etc). These roles are pre-established by the actions
82: of upper-level users.
83:
84: This is part of the LearningOnline Network with CAPA project
85: described at http://www.lon-capa.org.
86:
87: =head1 HANDLER SUBROUTINE
88:
89: This routine is called by Apache and mod_perl.
90:
91: =over 4
92:
93: =item *
94:
95: Roles Initialization (yes/no)
96:
97: =item *
98:
99: Get Error Message from Environment
100:
101: =item *
102:
103: Who is this?
104:
105: =item *
106:
107: Generate Page Output
108:
109: =item *
110:
111: Choice or no choice
112:
113: =item *
114:
115: Table
116:
117: =item *
118:
119: Privileges
120:
121: =back
122:
123: =cut
124:
125:
126: package Apache::lonroles;
127:
128: use strict;
129: use Apache::lonnet;
130: use Apache::lonuserstate();
131: use Apache::Constants qw(:common);
132: use Apache::File();
133: use Apache::lonmenu;
134: use Apache::loncommon;
135: use Apache::lonhtmlcommon;
136: use Apache::lonannounce;
137: use Apache::lonlocal;
138: use Apache::lonpageflip();
139: use Apache::lonnavdisplay();
140: use Apache::loncoursequeueadmin;
141: use GDBM_File;
142: use LONCAPA qw(:DEFAULT :match);
143: use HTML::Entities;
144:
145:
146: sub redirect_user {
147: my ($r,$title,$url,$msg,$launch_nav) = @_;
148: $msg = $title if (! defined($msg));
149: &Apache::loncommon::content_type($r,'text/html');
150: &Apache::loncommon::no_cache($r);
151: $r->send_http_header;
152: my $swinfo=&Apache::lonmenu::rawconfig();
153: my $navwindow;
154: if ($launch_nav eq 'on') {
155: $navwindow.=&Apache::lonnavdisplay::launch_win('now',undef,undef,
156: ($url =~ m-^/adm/whatsnew-));
157: } else {
158: $navwindow.=&Apache::lonnavmaps::close();
159: }
160:
161: # Breadcrumbs
162: my $brcrum = [{'href' => $url,
163: 'text' => 'Switching Role'},];
164: my $start_page = &Apache::loncommon::start_page('Switching Role',undef,
165: {'redirect' => [1,$url],
166: 'bread_crumbs' => $brcrum,});
167: my $end_page = &Apache::loncommon::end_page();
168:
169: # Note to style police:
170: # This must only replace the spaces, nothing else, or it bombs elsewhere.
171: $url=~s/ /\%20/g;
172: $r->print(<<ENDREDIR);
173: $start_page
174: <script type="text/javascript">
175: // <![CDATA[
176: $swinfo
177: // ]]>
178: </script>
179: $navwindow
180: <p>$msg</p>
181: $end_page
182: ENDREDIR
183: return;
184: }
185:
186: sub error_page {
187: my ($r,$error,$dest)=@_;
188: &Apache::loncommon::content_type($r,'text/html');
189: &Apache::loncommon::no_cache($r);
190: $r->send_http_header;
191: return OK if $r->header_only;
192: # Breadcrumbs
193: my $brcrum = [{'href' => $dest,
194: 'text' => 'Problems during Course Initialization'},];
195: $r->print(&Apache::loncommon::start_page('Problems during Course Initialization',
196: undef,
197: {'bread_crumbs' => $brcrum,})
198: );
199: $r->print(
200: '<script type="text/javascript">'.
201: '// <![CDATA['.
202: &Apache::lonmenu::rawconfig().
203: '// ]]>'.
204: '</script>'.
205: '<p class="LC_error">'.&mt('The following problems occurred:').
206: '<br />'.
207: $error.
208: '</p><br /><a href="'.$dest.'">'.&mt('Continue').'</a>'
209: );
210: $r->print(&Apache::loncommon::end_page());
211: }
212:
213: sub handler {
214:
215: my $r = shift;
216:
217: my $now=time;
218: my $then=$env{'user.login.time'};
219: my $refresh=$env{'user.refresh.time'};
220: my $update=$env{'user.update.time'};
221: if (!$refresh) {
222: $refresh = $then;
223: }
224: if (!$update) {
225: $update = $then;
226: }
227:
228: # -------------------------------------------------------- Check for new roles
229: my $updateresult;
230: if ($env{'form.doupdate'}) {
231: my $show_course=&Apache::loncommon::show_course();
232: my $checkingtxt;
233: if ($show_course) {
234: $checkingtxt = &mt('Checking for new courses ...');
235: } else {
236: $checkingtxt = &mt('Checking for new roles ...');
237: }
238: $updateresult = '<span class="LC_info">'.$checkingtxt.'</span>';
239: $updateresult .= &update_session_roles();
240: &Apache::lonnet::appenv({'user.update.time' => $now});
241: $update = $now;
242: }
243:
244: my $envkey;
245: my %dcroles = ();
246: my $numdc = &check_fordc(\%dcroles,$update,$then);
247: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'});
248: my $loncaparev = $Apache::lonnet::perlvar{'lonVersion'};
249:
250: # ================================================================== Roles Init
251: if ($env{'form.selectrole'}) {
252:
253: my $locknum=&Apache::lonnet::get_locks();
254: if ($locknum) { return 409; }
255:
256: if ($env{'form.newrole'}) {
257: $env{'form.'.$env{'form.newrole'}}=1;
258: }
259: if ($env{'request.course.id'}) {
260: # Check if user is CC trying to select a course role
261: if ($env{'form.switchrole'}) {
262: my $switch_is_active;
263: if (defined($env{'user.role.'.$env{'form.switchrole'}})) {
264: my ($start,$end) = split(/\./,$env{'user.role.'.$env{'form.switchrole'}});
265: if (!$end || $end > $now) {
266: if (!$start || $start < $update) {
267: $switch_is_active = 1;
268: }
269: }
270: }
271: unless ($switch_is_active) {
272: &adhoc_course_role($refresh,$update,$then);
273: }
274: }
275: my %temp=('logout_'.$env{'request.course.id'} => time);
276: &Apache::lonnet::put('email_status',\%temp);
277: &Apache::lonnet::delenv('user.state.'.$env{'request.course.id'});
278: }
279: &Apache::lonnet::appenv({"request.course.id" => '',
280: "request.course.fn" => '',
281: "request.course.uri" => '',
282: "request.course.sec" => '',
283: "request.role" => 'cm',
284: "request.role.adv" => $env{'user.adv'},
285: "request.role.domain" => $env{'user.domain'}});
286: # Check if user is a DC trying to enter a course or author space and needs privs to be created
287: if ($numdc > 0) {
288: foreach my $envkey (keys %env) {
289: # Is this an ad-hoc Coordinator role?
290: if (my ($ccrole,$domain,$coursenum) =
291: ($envkey =~ m-^form\.(cc|co)\./($match_domain)/($match_courseid)$-)) {
292: if ($dcroles{$domain}) {
293: &Apache::lonnet::check_adhoc_privs($domain,$coursenum,
294: $update,$refresh,$now,$ccrole);
295: }
296: last;
297: }
298: # Is this an ad-hoc CA-role?
299: if (my ($domain,$user) =
300: ($envkey =~ m-^form\.ca\./($match_domain)/($match_username)$-)) {
301: if (($domain eq $env{'user.domain'}) && ($user eq $env{'user.name'})) {
302: delete($env{$envkey});
303: $env{'form.au./'.$domain.'/'} = 1;
304: my ($server_status,$home) = &check_author_homeserver($user,$domain);
305: if ($server_status eq 'switchserver') {
306: my $trolecode = 'au./'.$domain.'/';
307: my $switchserver = '/adm/switchserver?otherserver='.$home.'&role='.$trolecode;
308: $r->internal_redirect($switchserver);
309: }
310: last;
311: }
312: if (my ($castart,$caend) = ($env{'user.role.ca./'.$domain.'/'.$user} =~ /^(\d*)\.(\d*)$/)) {
313: if (((($castart) && ($castart < $now)) || !$castart) &&
314: ((!$caend) || (($caend) && ($caend > $now)))) {
315: my ($server_status,$home) = &check_author_homeserver($user,$domain);
316: if ($server_status eq 'switchserver') {
317: my $trolecode = 'ca./'.$domain.'/'.$user;
318: my $switchserver = '/adm/switchserver?otherserver='.$home.'&role='.$trolecode;
319: $r->internal_redirect($switchserver);
320: }
321: last;
322: }
323: }
324: # Check if author blocked ca-access
325: my %blocked=&Apache::lonnet::get('environment',['domcoord.author'],$domain,$user);
326: if ($blocked{'domcoord.author'} eq 'blocked') {
327: delete($env{$envkey});
328: $env{'user.error.msg'}=':::1:User '.$user.' in domain '.$domain.' blocked domain coordinator access';
329: last;
330: }
331: if ($dcroles{$domain}) {
332: my ($server_status,$home) = &check_author_homeserver($user,$domain);
333: if (($server_status eq 'ok') || ($server_status eq 'switchserver')) {
334: &Apache::lonnet::check_adhoc_privs($domain,$user,$update,
335: $refresh,$now,'ca');
336: if ($server_status eq 'switchserver') {
337: my $trolecode = 'ca./'.$domain.'/'.$user;
338: my $switchserver = '/adm/switchserver?'
339: .'otherserver='.$home.'&role='.$trolecode;
340: $r->internal_redirect($switchserver);
341: }
342: } else {
343: delete($env{$envkey});
344: }
345: } else {
346: delete($env{$envkey});
347: }
348: last;
349: }
350: }
351: }
352:
353: foreach $envkey (keys %env) {
354: next if ($envkey!~/^user\.role\./);
355: my ($where,$trolecode,$role,$tstatus,$tend,$tstart);
356: &Apache::lonnet::role_status($envkey,$update,$refresh,$now,\$role,\$where,
357: \$trolecode,\$tstatus,\$tstart,\$tend);
358: if ($env{'form.'.$trolecode}) {
359: if ($tstatus eq 'is') {
360: $where=~s/^\///;
361: my ($cdom,$cnum,$csec)=split(/\//,$where);
362: if (($cnum) && ($role ne 'ca') && ($role ne 'aa')) {
363: my $home = $env{'course.'.$cdom.'_'.$cnum.'.home'};
364: my @ids = &Apache::lonnet::current_machine_ids();
365: unless ($loncaparev eq '' && $home && grep(/^\Q$home\E$/,@ids)) {
366: my %curr_reqd_hash = &Apache::lonnet::userenvironment($cdom,$cnum,'internal.releaserequired');
367: if ($curr_reqd_hash{'internal.releaserequired'} ne '') {
368: my ($switchserver,$switchwarning) =
369: &check_release_required($loncaparev,$cdom.'_'.$cnum,$trolecode,$curr_reqd_hash{'internal.releaserequired'});
370: if ($switchwarning ne '' || $switchserver ne '') {
371: &Apache::loncommon::content_type($r,'text/html');
372: &Apache::loncommon::no_cache($r);
373: $r->send_http_header;
374: my $end_page=&Apache::loncommon::end_page();
375: $r->print(&Apache::loncommon::start_page('Selected course unavailable on this server').
376: '<p class="LC_warning">');
377: if ($switchwarning) {
378: $r->print($switchwarning.'<br /><a href="/adm/roles">');
379: if (&Apache::loncommon::show_course()) {
380: $r->print(&mt('Display courses'));
381: } else {
382: $r->print(&mt('Display roles'));
383: }
384: $r->print('</a>');
385: } elsif ($switchserver) {
386: $r->print(&mt('This course requires a newer version of LON-CAPA than is installed on this server.').
387: '<br />'.
388: '<a href="/adm/switchserver?'.$switchserver.'">'.
389: &mt('Switch Server').
390: '</a>');
391: }
392: $r->print('</p>'.&Apache::loncommon::end_page());
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) || ($env{'form.switchrole'})) {
518: &Apache::lonnet::put('nohist_crslastlogin',
519: {$env{'user.name'}.':'.$env{'user.domain'}.
520: ':'.$csec.':'.$role => $now},$cdom,$cnum);
521: }
522: if (($env{'form.orgurl'}) &&
523: ($env{'form.orgurl'}!~/^\/adm\/flip/)) {
524: my $dest=$env{'form.orgurl'};
525: if ($env{'form.symb'}) {
526: if ($dest =~ /\?/) {
527: $dest .= '&';
528: } else {
529: $dest .= '?'
530: }
531: $dest .= 'symb='.$env{'form.symb'};
532: }
533: if (&Apache::lonnet::allowed('adv') eq 'F') { $tadv=1; }
534: &Apache::lonnet::appenv({'request.role.adv'=>$tadv});
535: if (($ferr) && ($tadv)) {
536: &error_page($r,$ferr,$dest);
537: } else {
538: if ($dest =~ m{^/adm/coursedocs\?folderpath}) {
539: if ($env{'request.course.id'} eq $cdom.'_'.$cnum) {
540: my $chome = &Apache::lonnet::homeserver($cnum,$cdom);
541: &update_content_constraints($cdom,$cnum,$chome,$cdom.'_'.$cnum);
542: }
543: }
544: $r->internal_redirect($dest);
545: }
546: return OK;
547: } else {
548: if (!$env{'request.course.id'}) {
549: &Apache::lonnet::appenv(
550: {"request.course.id" => $cdom.'_'.$cnum});
551: $furl='/adm/roles?tryagain=1';
552: $msg='<p><span class="LC_error">'
553: .&mt('Could not initialize [_1] at this time.',
554: $env{'course.'.$cdom.'_'.$cnum.'.description'})
555: .'</span></p>'
556: .'<p>'.&mt('Please try again.').'</p>'
557: .'<p>'.$ferr.'</p>';
558: }
559: if (&Apache::lonnet::allowed('adv') eq 'F') { $tadv=1; }
560: &Apache::lonnet::appenv({'request.role.adv'=>$tadv});
561:
562: if (($ferr) && ($tadv)) {
563: &error_page($r,$ferr,$furl);
564: } else {
565: # Check to see if the user is a CC entering a course
566: # for the first time
567: my (undef, undef, $role, $courseid) = split(/\./, $envkey);
568: if (substr($courseid, 0, 1) eq '/') {
569: $courseid = substr($courseid, 1);
570: }
571: $courseid =~ s/\//_/;
572: if ((($role eq 'cc') || ($role eq 'co'))
573: && ($env{'course.' . $courseid .'.course.helper.not.run'})) {
574: $furl = "/adm/helper/course.initialization.helper";
575: # Send the user to the course they selected
576: } elsif ($env{'request.course.id'}) {
577: if ($env{'form.destinationurl'}) {
578: my $dest = $env{'form.destinationurl'};
579: if ($env{'form.destsymb'} ne '') {
580: my $esc_symb = &HTML::Entities::encode($env{'form.destsymb'},'"<>&');
581: $dest .= '?symb='.$esc_symb;
582: }
583: &redirect_user($r, &mt('Entering [_1]',
584: $env{'course.'.$courseid.'.description'}),
585: $dest, $msg,
586: $env{'environment.remotenavmap'});
587: return OK;
588: }
589: if (&Apache::lonnet::allowed('whn',
590: $env{'request.course.id'})
591: || &Apache::lonnet::allowed('whn',
592: $env{'request.course.id'}.'/'
593: .$env{'request.course.sec'})
594: ) {
595: my $startpage = &courseloadpage($courseid);
596: unless ($startpage eq 'firstres') {
597: $msg = &mt('Entering [_1] ...',
598: $env{'course.'.$courseid.'.description'});
599: &redirect_user($r,&mt('New in course'),
600: '/adm/whatsnew?refpage=start',$msg,
601: $env{'environment.remotenavmap'});
602: return OK;
603: }
604: }
605: }
606: # Are we allowed to look at the first resource?
607: if (($furl !~ m|^/adm/|) ||
608: (($env{'environment.remotenavmap'} eq 'on') &&
609: ($furl =~ m{^/adm/navmaps}))) {
610: # Guess not ...
611: $furl=&Apache::lonpageflip::first_accessible_resource();
612: }
613: $msg = &mt('Entering [_1] ...',
614: $env{'course.'.$courseid.'.description'});
615: &redirect_user($r,&mt('Entering [_1]',
616: $env{'course.'.$courseid.'.description'}),
617: $furl,$msg,
618: $env{'environment.remotenavmap'});
619: }
620: return OK;
621: }
622: }
623: #
624: # Send the user to the construction space they selected
625: if ($role =~ /^(au|ca|aa)$/) {
626: my $redirect_url = '/priv/';
627: if ($role eq 'au') {
628: $redirect_url.=$env{'user.name'};
629: } else {
630: $where =~ /\/(.*)$/;
631: $redirect_url .= $1;
632: }
633: $redirect_url .= '/';
634: &redirect_user($r,&mt('Entering Construction Space'),
635: $redirect_url);
636: return OK;
637: }
638: if ($role eq 'dc') {
639: my $redirect_url = '/adm/menu/';
640: &redirect_user($r,&mt('Loading Domain Coordinator Menu'),
641: $redirect_url);
642: return OK;
643: }
644: if ($role eq 'sc') {
645: my $redirect_url = '/adm/grades?command=scantronupload';
646: &redirect_user($r,&mt('Loading Data Upload Page'),
647: $redirect_url);
648: return OK;
649: }
650: }
651: }
652: }
653: }
654:
655:
656: # =============================================================== No Roles Init
657:
658: &Apache::loncommon::content_type($r,'text/html');
659: &Apache::loncommon::no_cache($r);
660: $r->send_http_header;
661: return OK if $r->header_only;
662:
663: my $crumbtext = 'User Roles';
664: my $pagetitle = 'My Roles';
665: my $recent = &mt('Recent Roles');
666: my $show_course=&Apache::loncommon::show_course();
667: if ($show_course) {
668: $crumbtext = 'Courses';
669: $pagetitle = 'My Courses';
670: $recent = &mt('Recent Courses');
671: }
672: my $brcrum =[{href=>"/adm/roles",text=>$crumbtext}];
673: my $swinfo=&Apache::lonmenu::rawconfig();
674: my $start_page=&Apache::loncommon::start_page($pagetitle,undef,{bread_crumbs=>$brcrum});
675: my $standby=&mt('Role selected. Please stand by.');
676: $standby=~s/\n/\\n/g;
677: my $noscript='<span class="LC_error">'.&mt('Use of LON-CAPA requires Javascript to be enabled in your web browser.').'<br />'.&mt('As this is not the case, most functionality in the system will be unavailable.').'</span><br />';
678:
679: $r->print(<<ENDHEADER);
680: $start_page
681: <br />
682: <noscript>
683: $noscript
684: </noscript>
685: <script type="text/javascript">
686: // <![CDATA[
687: $swinfo
688: window.focus();
689:
690: active=true;
691:
692: function enterrole (thisform,rolecode,buttonname) {
693: if (active) {
694: active=false;
695: document.title='$standby';
696: window.status='$standby';
697: thisform.newrole.value=rolecode;
698: thisform.submit();
699: } else {
700: alert('$standby');
701: }
702: }
703:
704: function setToUpdate(thisform) {
705: thisform.doupdate.value='1';
706: thisform.selectrole.value='';
707: thisform.submit();
708: }
709:
710: // ]]>
711: </script>
712: ENDHEADER
713:
714: # ------------------------------------------ Get Error Message from Environment
715:
716: my ($fn,$priv,$nochoose,$error,$msg)=split(/:/,$env{'user.error.msg'});
717: if ($env{'user.error.msg'}) {
718: $r->log_reason(
719: "$msg for $env{'user.name'} domain $env{'user.domain'} access $priv",$fn);
720: }
721:
722: # ------------------------------------------------- Can this user re-init, etc?
723:
724: my $advanced=$env{'user.adv'};
725: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['tryagain']);
726: my $tryagain=$env{'form.tryagain'};
727: my $reinit=$env{'user.reinit'};
728: delete $env{'user.reinit'};
729:
730: # -------------------------------------------------------- Generate Page Output
731: # --------------------------------------------------------------- Error Header?
732: if ($error) {
733: $r->print("<h1>".&mt('LON-CAPA Access Control')."</h1>");
734: $r->print("<!-- LONCAPAACCESSCONTROLERRORSCREEN --><hr /><pre>");
735: if ($priv ne '') {
736: $r->print(&mt('Access : ').&Apache::lonnet::plaintext($priv)."\n");
737: }
738: if ($fn ne '') {
739: $r->print(&mt('Resource: ').&Apache::lonenc::check_encrypt($fn)."\n");
740: }
741: if ($msg ne '') {
742: $r->print(&mt('Action : ').$msg."\n");
743: }
744: $r->print("</pre><hr />");
745: my $url=$fn;
746: my $last;
747: if (tie(my %hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
748: &GDBM_READER(),0640)) {
749: $last=$hash{'last_known'};
750: untie(%hash);
751: }
752: if ($last) { $fn.='?symb='.&escape($last); }
753:
754: &Apache::londocs::changewarning($r,undef,'You have modified your course recently, [_1] may fix this access problem.',
755: &Apache::lonenc::check_encrypt($fn));
756: } else {
757: if ($env{'user.error.msg'}) {
758: if ($reinit) {
759: $r->print(
760: '<h3><span class="LC_error">'.
761: &mt('As your session file for the course or community has expired, you will need to re-select it.').'</span></h3>');
762: } else {
763: $r->print(
764: '<h3><span class="LC_error">'.
765: &mt('You need to choose another user role or enter a specific course or community for this function.').
766: '</span></h3>');
767: }
768: }
769: }
770: # -------------------------------------------------------- Choice or no choice?
771: if ($nochoose) {
772: $r->print("<h2>".&mt('Sorry ...')."</h2>\n<span class='LC_error'>".
773: &mt('This action is currently not authorized.').'</span>'.
774: &Apache::loncommon::end_page());
775: return OK;
776: } else {
777: $r->print($updateresult);
778: if (($ENV{'REDIRECT_QUERY_STRING'}) && ($fn)) {
779: $fn.='?'.$ENV{'REDIRECT_QUERY_STRING'};
780: }
781: $r->print('<form method="post" name="rolechoice" action="'.(($fn)?$fn:$r->uri).'">');
782: $r->print('<input type="hidden" name="orgurl" value="'.$fn.'" />');
783: $r->print('<input type="hidden" name="selectrole" value="1" />');
784: $r->print('<input type="hidden" name="newrole" value="" />');
785: }
786: $r->rflush();
787:
788: my (%roletext,%sortrole,%roleclass,%futureroles,%timezones);
789: my ($countactive,$countfuture,$inrole,$possiblerole) =
790: &gather_roles($update,$refresh,$now,$reinit,$nochoose,\%roletext,\%sortrole,\%roleclass,
791: \%futureroles,\%timezones,$loncaparev);
792: $refresh = $now;
793: &Apache::lonnet::appenv({'user.refresh.time' => $refresh});
794: my $updatebutton = &mt('Check for role changes');
795: my $show_course=&Apache::loncommon::show_course();
796: if ($show_course) {
797: $updatebutton = &mt('Check for new courses');
798: }
799: my $do_update;
800: unless (($env{'form.source'} eq 'login') || ($env{'form.doupdate'})) {
801: $do_update = '<input type="hidden" name="doupdate" value="" />'.
802: '<input type="button" name="update" value="'.
803: $updatebutton.'" onclick="javascript:setToUpdate(this.form)" />';
804: }
805: if ($env{'user.adv'}) {
806: my $showall = '<label><input type="checkbox" name="showall"';
807: if ($env{'form.showall'}) {
808: $showall .= ' checked="checked" ';
809: }
810: $showall .= ' />'.&mt('Show all roles').'</label> '.
811: '<input type="submit" value="'.&mt('Update display').'" />';
812: if ($do_update) {
813: $r->print('<div class="LC_left_float"><fieldset>'.
814: '<legend>'. &mt('Display').'</legend>'.
815: $showall.'</fieldset></div>'.
816: '<div class="LC_left_float"><fieldset><legend>'.
817: &mt('Changes?').'</legend>'.
818: $do_update.'</fieldset></div><br clear="all" />');
819: } else {
820: $r->print($showall);
821: }
822: } else {
823: $r->print('<p>'.$do_update.'</p>');
824: if ($countactive > 0) {
825: $r->print(&Apache::loncoursequeueadmin::queued_selfenrollment());
826: my $domdesc = &Apache::lonnet::domain($env{'user.domain'},'description');
827: my $esc_dom = &HTML::Entities::encode($env{'user.domain'},'"<>&');
828: $r->print(
829: '<p>'
830: .&mt('[_1]Visit the [_2]Course/Community Catalog[_3]'
831: .' to view all [_4] LON-CAPA courses and communities.'
832: ,'<b>'
833: ,'<a href="/adm/coursecatalog?showdom='.$esc_dom.'">'
834: ,'</a></b>',$domdesc)
835: .'<br />'
836: .&mt('If a course or community is [_1]not[_2] in your list of current courses and communities below,'
837: .' you may be able to enroll if self-enrollment is permitted.'
838: ,'<b>','</b>')
839: .'</p>'
840: );
841: }
842: }
843:
844: # No active roles
845: if ($countactive==0) {
846: if ($inrole) {
847: $r->print('<h2>'.&mt('Currently no additional roles, courses or communities').'</h2>');
848: } else {
849: $r->print('<h2>'.&mt('Currently no active roles, courses or communities').'</h2>');
850: }
851: &findcourse_advice($r);
852: &requestcourse_advice($r);
853: $r->print('</form>');
854: if ($countfuture) {
855: $r->print(&mt('The following [quant,_1,role,roles] will become active in the future:',$countfuture));
856: my $doheaders = &roletable_headers($r,\%roleclass,\%sortrole,
857: $nochoose);
858: &print_rolerows($r,$doheaders,\%roleclass,\%sortrole,\%dcroles,
859: \%roletext);
860: my $tremark='';
861: my $tbg;
862: if ($env{'request.role'} eq 'cm') {
863: $tbg="LC_roles_selected";
864: $tremark=&mt('Currently selected.').' ';
865: } else {
866: $tbg="LC_roles_is";
867: }
868: $r->print(&Apache::loncommon::start_data_table_row()
869: .'<td class="'.$tbg.'"> </td>'
870: .'<td colspan="3">'
871: .&mt('No role specified')
872: .'</td>'
873: .'<td>'.$tremark.' </td>'
874: .&Apache::loncommon::end_data_table_row()
875: );
876:
877: $r->print(&Apache::loncommon::end_data_table());
878: }
879: $r->print(&Apache::loncommon::end_page());
880: return OK;
881: } elsif ($countactive==1 && $countfuture==0) { # Only one choice
882: my $needs_switchserver;
883: if ($env{'user.author'}) {
884: $needs_switchserver = &check_needs_switchserver($possiblerole);
885: }
886: if ((!$needs_switchserver) && ($env{'request.role'} eq 'cm')) {
887: $r->print('<h3>'.&mt('Please stand by.').'</h3>'.
888: '<input type="hidden" name="'.$possiblerole.'" value="1" />'.
889: '<noscript><br /><input type="submit" name="submit" value="'.&mt('Continue').'" /></noscript>');
890: $r->print("</form>\n");
891: $r->rflush();
892: $r->print('<script type="text/javascript">document.forms.rolechoice.submit();</script>');
893: $r->print(&Apache::loncommon::end_page());
894: return OK;
895: }
896: if ($needs_switchserver) {
897: $r->print("<h2>".&mt('Server Switch Required')."</h2>\n".
898: &mt('Construction Space access is only available from '.
899: 'the home server of the corresponding Author.').'<br />'.
900: &mt("Click the 'Switch Server' link to go there.").'<br />');
901: }
902: }
903: # ----------------------------------------------------------------------- Table
904:
905: if ($numdc > 0) {
906: $r->print(&coursepick_jscript());
907: $r->print(&Apache::loncommon::coursebrowser_javascript().
908: &Apache::loncommon::authorbrowser_javascript());
909: }
910:
911: unless ((!&Apache::loncommon::show_course()) || ($nochoose) || ($countactive==1)) {
912: $r->print("<h2>".&mt('Select a Course to Enter')."</h2>\n");
913: }
914: if ($env{'form.destinationurl'}) {
915: $r->print('<input type="hidden" name="destinationurl" value="'.
916: $env{'form.destinationurl'}.'" />');
917: if ($env{'form.destsymb'} ne '') {
918: $r->print('<input type="hidden" name="destsymb" value="'.
919: $env{'form.destsymb'}.'" />');
920: }
921: }
922:
923: my $doheaders = &roletable_headers($r,\%roleclass,\%sortrole,$nochoose);
924: if ($env{'environment.recentroles'}) {
925: my %recent_roles =
926: &Apache::lonhtmlcommon::get_recent('roles',$env{'environment.recentrolesn'});
927: my $output='';
928: foreach my $role (sort(keys(%recent_roles))) {
929: if (ref($roletext{'user.role.'.$role}) eq 'ARRAY') {
930: $output.= &Apache::loncommon::start_data_table_row().
931: $roletext{'user.role.'.$role}->[0].
932: &Apache::loncommon::end_data_table_row();
933: if ($roletext{'user.role.'.$role}->[1] ne '') {
934: $output .= &Apache::loncommon::continue_data_table_row().
935: $roletext{'user.role.'.$role}->[1].
936: &Apache::loncommon::end_data_table_row();
937: }
938: if ($role =~ m{dc\./($match_domain)/}
939: && $dcroles{$1}) {
940: $output .= &adhoc_roles_row($1,'recent');
941: }
942: } elsif ($numdc > 0) {
943: unless ($role =~/^error\:/) {
944: my ($roletext,$role_text_end) = &display_cc_role('user.role.'.$role);
945: if ($roletext) {
946: $output.= &Apache::loncommon::start_data_table_row().
947: $roletext.
948: &Apache::loncommon::end_data_table_row();
949: if ($role_text_end) {
950: $output .= &Apache::loncommon::continue_data_table_row().
951: $role_text_end.
952: &Apache::loncommon::end_data_table_row();
953: }
954: }
955: }
956: }
957: }
958: if ($output) {
959: $r->print(&Apache::loncommon::start_data_table_empty_row()
960: .'<td align="center" colspan="5">'
961: .$recent
962: .'</td>'
963: .&Apache::loncommon::end_data_table_empty_row()
964: );
965: $r->print($output);
966: $doheaders ++;
967: }
968: }
969: &print_rolerows($r,$doheaders,\%roleclass,\%sortrole,\%dcroles,\%roletext);
970: if ($countactive > 1) {
971: my $tremark='';
972: my $tbg;
973: if ($env{'request.role'} eq 'cm') {
974: $tbg="LC_roles_selected";
975: $tremark=&mt('Currently selected.').' ';
976: } else {
977: $tbg="LC_roles_is";
978: }
979: $r->print(&Apache::loncommon::start_data_table_row());
980: unless ($nochoose) {
981: if ($env{'request.role'} ne 'cm') {
982: $r->print('<td class="'.$tbg.'"><input type="submit" value="'.
983: &mt('Select').'" name="cm" /></td>');
984: } else {
985: $r->print('<td class="'.$tbg.'"> </td>');
986: }
987: }
988: $r->print('<td colspan="3">'
989: .&mt('No role specified')
990: .'</td>'
991: .'<td>'.$tremark.' </td>'
992: .&Apache::loncommon::end_data_table_row()
993: );
994: }
995: $r->print(&Apache::loncommon::end_data_table());
996: unless ($nochoose) {
997: $r->print("</form>\n");
998: }
999: # ------------------------------------------------------------ Privileges Info
1000: if (($advanced) && (($env{'user.error.msg'}) || ($error))) {
1001: $r->print('<hr /><h2>'.&mt('Current Privileges').'</h2>');
1002: $r->print(&privileges_info());
1003: }
1004: $r->print(&Apache::lonnet::getannounce());
1005: if ($advanced) {
1006: my $esc_dom = &HTML::Entities::encode($env{'user.domain'},'"<>&');
1007: $r->print('<p><small><i>'
1008: .&mt('This LON-CAPA server is version [_1]',$r->dir_config('lonVersion'))
1009: .'</i><br />'
1010: .'<a href="/adm/logout">'.&mt('Logout').'</a> '
1011: .'<a href="/adm/coursecatalog?showdom='.$esc_dom.'">'
1012: .&mt('Course/Community Catalog')
1013: .'</a></small></p>');
1014: }
1015: $r->print(&Apache::loncommon::end_page());
1016: return OK;
1017: }
1018:
1019: sub gather_roles {
1020: my ($update,$refresh,$now,$reinit,$nochoose,$roletext,$sortrole,$roleclass,$futureroles,$timezones,$loncaparev) = @_;
1021: my ($countactive,$countfuture,$inrole,$possiblerole) = (0,0,0,'');
1022: my $advanced = $env{'user.adv'};
1023: my $tryagain = $env{'form.tryagain'};
1024: my @ids = &Apache::lonnet::current_machine_ids();
1025: foreach my $envkey (sort(keys(%env))) {
1026: my $button = 1;
1027: my $switchserver='';
1028: my $switchwarning;
1029: my ($role_text,$role_text_end,$sortkey);
1030: if ($envkey=~/^user\.role\./) {
1031: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend);
1032: &Apache::lonnet::role_status($envkey,$update,$refresh,$now,\$role,\$where,
1033: \$trolecode,\$tstatus,\$tstart,\$tend);
1034: next if (!defined($role) || $role eq '' || $role =~ /^gr/);
1035: $tremark='';
1036: $tpstart=' ';
1037: $tpend=' ';
1038: if ($env{'request.role'} eq $trolecode) {
1039: $tstatus='selected';
1040: }
1041: my $tbg;
1042: if (($tstatus eq 'is')
1043: || ($tstatus eq 'selected')
1044: || ($tstatus eq 'future')
1045: || ($env{'form.showall'})) {
1046: my $timezone = &role_timezone($where,$timezones);
1047: if ($tstart) {
1048: $tpstart=&Apache::lonlocal::locallocaltime($tstart,$timezone);
1049: }
1050: if ($tend) {
1051: $tpend=&Apache::lonlocal::locallocaltime($tend,$timezone);
1052: }
1053: if ($tstatus eq 'is') {
1054: $tbg='LC_roles_is';
1055: $possiblerole=$trolecode;
1056: $countactive++;
1057: } elsif ($tstatus eq 'future') {
1058: $tbg='LC_roles_future';
1059: $button=0;
1060: $futureroles->{$trolecode} = $tstart.':'.$tend;
1061: $countfuture ++;
1062: } elsif ($tstatus eq 'expired') {
1063: $tbg='LC_roles_expired';
1064: $button=0;
1065: } elsif ($tstatus eq 'will_not') {
1066: $tbg='LC_roles_will_not';
1067: $tremark.=&mt('Expired after logout.').' ';
1068: } elsif ($tstatus eq 'selected') {
1069: $tbg='LC_roles_selected';
1070: $inrole=1;
1071: $countactive++;
1072: $tremark.=&mt('Currently selected.').' ';
1073: }
1074: my $trole;
1075: if ($role =~ /^cr\//) {
1076: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$role);
1077: if ($tremark) { $tremark.='<br />'; }
1078: $tremark.=&mt('Customrole defined by [_1].',$rauthor.':'.$rdomain);
1079: }
1080: $trole=Apache::lonnet::plaintext($role);
1081: my $ttype;
1082: my $twhere;
1083: my ($tdom,$trest,$tsection)=
1084: split(/\//,Apache::lonnet::declutter($where));
1085: # First, Co-Authorship roles
1086: if (($role eq 'ca') || ($role eq 'aa')) {
1087: my $home = &Apache::lonnet::homeserver($trest,$tdom);
1088: my $allowed=0;
1089: foreach my $id (@ids) { if ($id eq $home) { $allowed=1; } }
1090: if (!$allowed) {
1091: $button=0;
1092: $switchserver='otherserver='.$home.'&role='.$trolecode;
1093: }
1094: #next if ($home eq 'no_host');
1095: $home = &Apache::lonnet::hostname($home);
1096: $ttype='Construction Space';
1097: $twhere=&mt('User').': '.$trest.'<br />'.&mt('Domain').
1098: ': '.$tdom.'<br />'.
1099: ' '.&mt('Server').': '.$home;
1100: $env{'course.'.$tdom.'_'.$trest.'.description'}='ca';
1101: $tremark.=&Apache::lonhtmlcommon::authorbombs('/res/'.$tdom.'/'.$trest.'/');
1102: $sortkey=$role."$trest:$tdom";
1103: } elsif ($role eq 'au') {
1104: # Authors
1105: my $home = &Apache::lonnet::homeserver
1106: ($env{'user.name'},$env{'user.domain'});
1107: my $allowed=0;
1108: foreach my $id (@ids) { if ($id eq $home) { $allowed=1; } }
1109: if (!$allowed) {
1110: $button=0;
1111: $switchserver='otherserver='.$home.'&role='.$trolecode;
1112: }
1113: #next if ($home eq 'no_host');
1114: $home = &Apache::lonnet::hostname($home);
1115: $ttype='Construction Space';
1116: $twhere=&mt('Domain').': '.$tdom.'<br />'.&mt('Server').
1117: ': '.$home;
1118: $env{'course.'.$tdom.'_'.$trest.'.description'}='ca';
1119: $tremark.=&Apache::lonhtmlcommon::authorbombs('/res/'.$tdom.'/'.$env{'user.name'}.'/');
1120: $sortkey=$role;
1121: } elsif ($trest) {
1122: my $tcourseid=$tdom.'_'.$trest;
1123: $ttype = &Apache::loncommon::course_type($tcourseid);
1124: $trole = &Apache::lonnet::plaintext($role,$ttype,$tcourseid);
1125: if ($env{'course.'.$tcourseid.'.description'}) {
1126: my $home=$env{'course.'.$tcourseid.'.home'};
1127: $twhere=$env{'course.'.$tcourseid.'.description'};
1128: $sortkey=$role."\0".$tdom."\0".$twhere."\0".$envkey;
1129: $twhere = &HTML::Entities::encode($twhere,'"<>&');
1130: unless ($twhere eq &mt('Currently not available')) {
1131: $twhere.=' <span class="LC_fontsize_small">'.
1132: &Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$trest,$tdom).
1133: '</span>';
1134: unless ($home && grep(/^\Q$home\E$/,@ids) && $loncaparev eq '') {
1135: my $required = $env{'course.'.$tcourseid.'.internal.releaserequired'};
1136: if ($required ne '') {
1137: ($switchserver,$switchwarning) =
1138: &check_release_required($loncaparev,$tcourseid,$trolecode,$required);
1139: if ($switchserver || $switchwarning) {
1140: $button = 0;
1141: }
1142: }
1143: }
1144: }
1145: } else {
1146: my %newhash=&Apache::lonnet::coursedescription($tcourseid);
1147: if (%newhash) {
1148: $sortkey=$role."\0".$tdom."\0".$newhash{'description'}.
1149: "\0".$envkey;
1150: $twhere=&HTML::Entities::encode($newhash{'description'},'"<>&').
1151: ' <span class="LC_fontsize_small">'.
1152: &Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$trest,$tdom).
1153: '</span>';
1154: $ttype = $newhash{'type'};
1155: $trole = &Apache::lonnet::plaintext($role,$ttype,$tcourseid);
1156: my $home = $newhash{'home'};
1157: unless ($home && grep(/^\Q$home\E$/,@ids) && $loncaparev eq '') {
1158: my $required = $newhash{'internal.releaserequired'};
1159: if ($required ne '') {
1160: ($switchserver,$switchwarning) =
1161: &check_release_required($loncaparev,$tcourseid,$trolecode,$required);
1162: if ($switchserver || $switchwarning) {
1163: $button = 0;
1164: }
1165: }
1166: }
1167: } else {
1168: $twhere=&mt('Currently not available');
1169: $env{'course.'.$tcourseid.'.description'}=$twhere;
1170: $sortkey=$role."\0".$tdom."\0".$twhere."\0".$envkey;
1171: $ttype = 'Unavailable';
1172: }
1173: }
1174: if ($tsection) {
1175: $twhere.='<br />'.&mt('Section').': '.$tsection;
1176: }
1177: if ($role ne 'st') { $twhere.="<br />".&mt('Domain').":".$tdom; }
1178: } elsif ($tdom) {
1179: $ttype='Domain';
1180: $twhere=$tdom;
1181: $sortkey=$role.$twhere;
1182: } else {
1183: $ttype='System';
1184: $twhere=&mt('system wide');
1185: $sortkey=$role.$twhere;
1186: }
1187: ($role_text,$role_text_end) =
1188: &build_roletext($trolecode,$tdom,$trest,$tstatus,$tryagain,
1189: $advanced,$tremark,$tbg,$trole,$twhere,$tpstart,
1190: $tpend,$nochoose,$button,$switchserver,$reinit,$switchwarning);
1191: $roletext->{$envkey}=[$role_text,$role_text_end];
1192: if (!$sortkey) {$sortkey=$twhere."\0".$envkey;}
1193: $sortrole->{$sortkey}=$envkey;
1194: $roleclass->{$envkey}=$ttype;
1195: }
1196: }
1197: }
1198: return ($countactive,$countfuture,$inrole,$possiblerole);
1199: }
1200:
1201: sub role_timezone {
1202: my ($where,$timezones) = @_;
1203: my $timezone;
1204: if (ref($timezones) eq 'HASH') {
1205: if ($where =~ m{^/($match_domain)/($match_courseid)}) {
1206: my $cdom = $1;
1207: my $cnum = $2;
1208: if ($cdom && $cnum) {
1209: if (!exists($timezones->{$cdom.'_'.$cnum})) {
1210: my $tz;
1211: if ($env{'course.'.$cdom.'_'.$cnum.'.description'}) {
1212: $tz = $env{'course.'.$cdom.'_'.$cnum.'.timezone'};
1213: } else {
1214: my %timehash =
1215: &Apache::lonnet::get('environment',['timezone'],$cdom,$cnum);
1216: $tz = $timehash{'timezone'};
1217: }
1218: if ($tz eq '') {
1219: if (!exists($timezones->{$cdom})) {
1220: my %domdefaults =
1221: &Apache::lonnet::get_domain_defaults($cdom);
1222: if ($domdefaults{'timezone_def'} eq '') {
1223: $timezones->{$cdom} = 'local';
1224: } else {
1225: $timezones->{$cdom} = $domdefaults{'timezone_def'};
1226: }
1227: }
1228: $timezones->{$cdom.'_'.$cnum} = $timezones->{$cdom};
1229: } else {
1230: $timezones->{$cdom.'_'.$cnum} =
1231: &Apache::lonlocal::gettimezone($tz);
1232: }
1233: }
1234: $timezone = $timezones->{$cdom.'_'.$cnum};
1235: }
1236: } else {
1237: my ($tdom) = ($where =~ m{^/($match_domain)});
1238: if ($tdom) {
1239: if (!exists($timezones->{$tdom})) {
1240: my %domdefaults = &Apache::lonnet::get_domain_defaults($tdom);
1241: if ($domdefaults{'timezone_def'} eq '') {
1242: $timezones->{$tdom} = 'local';
1243: } else {
1244: $timezones->{$tdom} = $domdefaults{'timezone_def'};
1245: }
1246: }
1247: $timezone = $timezones->{$tdom};
1248: }
1249: }
1250: if ($timezone eq 'local') {
1251: $timezone = undef;
1252: }
1253: }
1254: return $timezone;
1255: }
1256:
1257: sub roletable_headers {
1258: my ($r,$roleclass,$sortrole,$nochoose) = @_;
1259: my $doheaders;
1260: if ((ref($sortrole) eq 'HASH') && (ref($roleclass) eq 'HASH')) {
1261: $r->print('<br />'
1262: .&Apache::loncommon::start_data_table()
1263: .&Apache::loncommon::start_data_table_header_row()
1264: );
1265: if (!$nochoose) { $r->print('<th> </th>'); }
1266: $r->print('<th>'.&mt('User Role').'</th>'
1267: .'<th>'.&mt('Extent').'</th>'
1268: .'<th>'.&mt('Start').'</th>'
1269: .'<th>'.&mt('End').'</th>'
1270: .&Apache::loncommon::end_data_table_header_row()
1271: );
1272: $doheaders=-1;
1273: my @roletypes = &roletypes();
1274: foreach my $type (@roletypes) {
1275: my $haverole=0;
1276: foreach my $which (sort {uc($a) cmp uc($b)} (keys(%{$sortrole}))) {
1277: if ($roleclass->{$sortrole->{$which}} =~ /^\Q$type\E/) {
1278: $haverole=1;
1279: }
1280: }
1281: if ($haverole) { $doheaders++; }
1282: }
1283: }
1284: return $doheaders;
1285: }
1286:
1287: sub roletypes {
1288: my @types = ('Domain','Construction Space','Course','Community','Unavailable','System');
1289: return @types;
1290: }
1291:
1292: sub print_rolerows {
1293: my ($r,$doheaders,$roleclass,$sortrole,$dcroles,$roletext) = @_;
1294: if ((ref($roleclass) eq 'HASH') && (ref($sortrole) eq 'HASH')) {
1295: my @types = &roletypes();
1296: foreach my $type (@types) {
1297: my $output;
1298: foreach my $which (sort {uc($a) cmp uc($b)} (keys(%{$sortrole}))) {
1299: if ($roleclass->{$sortrole->{$which}} =~ /^\Q$type\E/) {
1300: if (ref($roletext) eq 'HASH') {
1301: if (ref($roletext->{$sortrole->{$which}}) eq 'ARRAY') {
1302: $output.= &Apache::loncommon::start_data_table_row().
1303: $roletext->{$sortrole->{$which}}->[0].
1304: &Apache::loncommon::end_data_table_row();
1305: if ($roletext->{$sortrole->{$which}}->[1] ne '') {
1306: $output .= &Apache::loncommon::continue_data_table_row().
1307: $roletext->{$sortrole->{$which}}->[1].
1308: &Apache::loncommon::end_data_table_row();
1309: }
1310: }
1311: if ($sortrole->{$which} =~ m-dc\./($match_domain)/-) {
1312: if (ref($dcroles) eq 'HASH') {
1313: if ($dcroles->{$1}) {
1314: $output .= &adhoc_roles_row($1,'');
1315: }
1316: }
1317: }
1318: }
1319: }
1320: }
1321: if ($output) {
1322: if ($doheaders > 0) {
1323: $r->print(&Apache::loncommon::start_data_table_empty_row()
1324: .'<td align="center" colspan="5">'
1325: .&mt($type)
1326: .'</td>'
1327: .&Apache::loncommon::end_data_table_empty_row()
1328: );
1329: }
1330: $r->print($output);
1331: }
1332: }
1333: }
1334: }
1335:
1336: sub findcourse_advice {
1337: my ($r) = @_;
1338: my $domdesc = &Apache::lonnet::domain($env{'user.domain'},'description');
1339: my $esc_dom = &HTML::Entities::encode($env{'user.domain'},'"<>&');
1340: if (&Apache::lonnet::auto_run(undef,$env{'user.domain'})) {
1341: $r->print(&mt('If you were expecting to see an active role listed for a particular course in the [_1] domain, it may be missing for one of the following reasons:',$domdesc).'
1342: <ul>
1343: <li>'.&mt('The course has yet to be created.').'</li>
1344: <li>'.&mt('Automatic enrollment of registered students has not been enabled for the course.').'</li>
1345: <li>'.&mt('You are in a section of course for which automatic enrollment in the corresponding LON-CAPA course is not active.').'</li>
1346: <li>'.&mt('The start date for automated enrollment has yet to be reached.').'</li>
1347: <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>
1348: </ul>');
1349: } else {
1350: $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 />');
1351: }
1352: $r->print('<h3>'.&mt('Self-Enrollment').'</h3>'.
1353: '<p>'.&mt('The [_1]Course/Community Catalog[_2] provides information about all [_3] classes for which LON-CAPA courses have been created, as well as any communities in the domain.','<a href="/adm/coursecatalog?showdom='.$esc_dom.'">','</a>',$domdesc).'<br />');
1354: $r->print(&mt('You can search for courses and communities which permit self-enrollment, if you would like to enroll in one.').'</p>'.
1355: &Apache::loncoursequeueadmin::queued_selfenrollment());
1356: return;
1357: }
1358:
1359: sub requestcourse_advice {
1360: my ($r) = @_;
1361: my $domdesc = &Apache::lonnet::domain($env{'user.domain'},'description');
1362: my $esc_dom = &HTML::Entities::encode($env{'user.domain'},'"<>&');
1363: my (%can_request,%request_doms);
1364: &Apache::lonnet::check_can_request($env{'user.domain'},\%can_request,\%request_doms);
1365: if (keys(%request_doms) > 0) {
1366: my ($types,$typename) = &Apache::loncommon::course_types();
1367: if ((ref($types) eq 'ARRAY') && (ref($typename) eq 'HASH')) {
1368: $r->print('<h3>'.&mt('Request creation of a course or community').'</h3>'.
1369: '<p>'.&mt('You have rights to request the creation of courses and/or communities in the following domain(s):').'<ul>');
1370: my (@reqdoms,@reqtypes);
1371: foreach my $type (sort(keys(%request_doms))) {
1372: push(@reqtypes,$type);
1373: if (ref($request_doms{$type}) eq 'ARRAY') {
1374: my $domstr = join(', ',map { &Apache::lonnet::domain($_) } sort(@{$request_doms{$type}}));
1375: $r->print(
1376: '<li>'
1377: .&mt('[_1]'.$typename->{$type}.'[_2] in domain: [_3]',
1378: '<i>',
1379: '</i>',
1380: '<b>'.$domstr.'</b>')
1381: .'</li>'
1382: );
1383: foreach my $dom (@{$request_doms{$type}}) {
1384: unless (grep(/^\Q$dom\E/,@reqdoms)) {
1385: push(@reqdoms,$dom);
1386: }
1387: }
1388: }
1389: }
1390: my @showtypes;
1391: foreach my $type (@{$types}) {
1392: if (grep(/^\Q$type\E$/,@reqtypes)) {
1393: push(@showtypes,$type);
1394: }
1395: }
1396: my $requrl = '/adm/requestcourse';
1397: if (@reqdoms == 1) {
1398: $requrl .= '?showdom='.$reqdoms[0];
1399: }
1400: if (@showtypes > 0) {
1401: $requrl.=(($requrl=~/\?/)?'&':'?').'crstype='.$showtypes[0];
1402: }
1403: if (@reqdoms == 1 || @showtypes > 0) {
1404: $requrl .= '&state=crstype&action=new';
1405: }
1406: $r->print('</ul>'.&mt('Use the [_1]request form[_2] to submit a request for creation of a new course or community.','<a href="'.$requrl.'">','</a>').'</p>');
1407: }
1408: }
1409: return;
1410: }
1411:
1412: sub privileges_info {
1413: my ($which) = @_;
1414: my $output;
1415:
1416: $which ||= $env{'request.role'};
1417:
1418: foreach my $envkey (sort(keys(%env))) {
1419: next if ($envkey!~/^user\.priv\.\Q$which\E\.(.*)/);
1420:
1421: my $where=$1;
1422: my $ttype;
1423: my $twhere;
1424: my (undef,$tdom,$trest,$tsec)=split(m{/},$where);
1425: if ($trest) {
1426: if ($env{'course.'.$tdom.'_'.$trest.'.description'} eq 'ca') {
1427: $ttype='Construction Space';
1428: $twhere='User: '.$trest.', Domain: '.$tdom;
1429: } else {
1430: $ttype= &Apache::loncommon::course_type($tdom.'_'.$trest);
1431: $twhere=$env{'course.'.$tdom.'_'.$trest.'.description'};
1432: if ($tsec) {
1433: my $sec_type = 'Section';
1434: if (exists($env{"user.role.gr.$where"})) {
1435: $sec_type = 'Group';
1436: }
1437: $twhere.=' ('.$sec_type.': '.$tsec.')';
1438: }
1439: }
1440: } elsif ($tdom) {
1441: $ttype='Domain';
1442: $twhere=$tdom;
1443: } else {
1444: $ttype='System';
1445: $twhere='/';
1446: }
1447: $output .= "\n<h3>".&mt($ttype).': '.$twhere.'</h3>'."\n<ul>";
1448: foreach my $priv (sort(split(/:/,$env{$envkey}))) {
1449: next if (!$priv);
1450:
1451: my ($prv,$restr)=split(/\&/,$priv);
1452: my $trestr='';
1453: if ($restr ne 'F') {
1454: $trestr.=' ('.
1455: join(', ',
1456: map { &Apache::lonnet::plaintext($_) }
1457: (split('',$restr))).') ';
1458: }
1459: $output .= "\n\t".
1460: '<li>'.&Apache::lonnet::plaintext($prv).$trestr.'</li>';
1461: }
1462: $output .= "\n".'</ul>';
1463: }
1464: return $output;
1465: }
1466:
1467: sub build_roletext {
1468: my ($trolecode,$tdom,$trest,$tstatus,$tryagain,$advanced,$tremark,$tbg,$trole,$twhere,$tpstart,$tpend,$nochoose,$button,$switchserver,$reinit,$switchwarning) = @_;
1469: my ($roletext,$roletext_end);
1470: my $is_dc=($trolecode =~ m/^dc\./);
1471: my $rowspan=($is_dc) ? ''
1472: : ' rowspan="2" ';
1473:
1474: unless ($nochoose) {
1475: my $buttonname=$trolecode;
1476: $buttonname=~s/\W//g;
1477: if (!$button) {
1478: if ($switchserver) {
1479: $roletext.='<td'.$rowspan.' class="'.$tbg.'">'
1480: .'<a href="/adm/switchserver?'.$switchserver.'">'
1481: .&mt('Switch Server')
1482: .'</a></td>';
1483: } else {
1484: $roletext.=('<td'.$rowspan.' class="'.$tbg.'"> </td>');
1485: }
1486: if ($switchwarning) {
1487: if ($tremark eq '') {
1488: $tremark = $switchwarning;
1489: } else {
1490: $tremark .= '<br />'.$switchwarning;
1491: }
1492: }
1493: } elsif ($tstatus eq 'is') {
1494: $roletext.='<td'.$rowspan.' class="'.$tbg.'">'.
1495: '<input name="'.$buttonname.'" type="button" value="'.
1496: &mt('Select').'" onclick="javascript:enterrole(this.form,\''.
1497: $trolecode."','".$buttonname.'\');" /></td>';
1498: } elsif ($tryagain) {
1499: $roletext.=
1500: '<td'.$rowspan.' class="'.$tbg.'">'.
1501: '<input name="'.$buttonname.'" type="button" value="'.
1502: &mt('Try Selecting Again').'" onclick="javascript:enterrole(this.form,\''.
1503: $trolecode."','".$buttonname.'\');" /></td>';
1504: } elsif ($advanced) {
1505: $roletext.=
1506: '<td'.$rowspan.' class="'.$tbg.'">'.
1507: '<input name="'.$buttonname.'" type="button" value="'.
1508: &mt('Re-Initialize').'" onclick="javascript:enterrole(this.form,\''.
1509: $trolecode."','".$buttonname.'\');" /></td>';
1510: } elsif ($reinit) {
1511: $roletext.=
1512: '<td'.$rowspan.' class="'.$tbg.'">'.
1513: '<input name="'.$buttonname.'" type="button" value="'.
1514: &mt('Re-Select').'" onclick="javascript:enterrole(this.form,\''.
1515: $trolecode."','".$buttonname.'\');" /></td>';
1516: } else {
1517: $roletext.=
1518: '<td'.$rowspan.' class="'.$tbg.'">'.
1519: '<input name="'.$buttonname.'" type="button" value="'.
1520: &mt('Re-Select').'" onclick="javascript:enterrole(this.form,\''.
1521: $trolecode."','".$buttonname.'\');" /></td>';
1522: }
1523: }
1524: if ($trolecode !~ m/^(dc|ca|au|aa)\./) {
1525: $tremark.=&Apache::lonannounce::showday(time,1,
1526: &Apache::lonannounce::readcalendar($tdom.'_'.$trest));
1527: }
1528: $roletext.='<td>'.$trole.'</td>'
1529: .'<td>'.$twhere.'</td>'
1530: .'<td>'.$tpstart.'</td>'
1531: .'<td>'.$tpend.'</td>';
1532: if (!$is_dc) {
1533: $roletext_end = '<td colspan="4">'.
1534: $tremark.' '.
1535: '</td>';
1536: }
1537: return ($roletext,$roletext_end);
1538: }
1539:
1540: sub check_needs_switchserver {
1541: my ($possiblerole) = @_;
1542: my $needs_switchserver;
1543: my ($role,$where) = split(/\./,$possiblerole,2);
1544: my (undef,$tdom,$twho) = split(/\//,$where);
1545: my ($server_status,$home);
1546: if (($role eq 'ca') || ($role eq 'aa')) {
1547: ($server_status,$home) = &check_author_homeserver($twho,$tdom);
1548: } else {
1549: ($server_status,$home) = &check_author_homeserver($env{'user.name'},
1550: $env{'user.domain'});
1551: }
1552: if ($server_status eq 'switchserver') {
1553: $needs_switchserver = 1;
1554: }
1555: return $needs_switchserver;
1556: }
1557:
1558: sub check_author_homeserver {
1559: my ($uname,$udom)=@_;
1560: if (($uname eq '') || ($udom eq '')) {
1561: return ('fail','');
1562: }
1563: my $home = &Apache::lonnet::homeserver($uname,$udom);
1564: if (&Apache::lonnet::host_domain($home) ne $udom) {
1565: return ('fail',$home);
1566: }
1567: my @ids=&Apache::lonnet::current_machine_ids();
1568: if (grep(/^\Q$home\E$/,@ids)) {
1569: return ('ok',$home);
1570: } else {
1571: return ('switchserver',$home);
1572: }
1573: }
1574:
1575: sub check_fordc {
1576: my ($dcroles,$update,$then) = @_;
1577: my $numdc = 0;
1578: if ($env{'user.adv'}) {
1579: foreach my $envkey (sort keys %env) {
1580: if ($envkey=~/^user\.role\.dc\.\/($match_domain)\/$/) {
1581: my $dcdom = $1;
1582: my $livedc = 1;
1583: my ($tstart,$tend)=split(/\./,$env{$envkey});
1584: my $limit = $update;
1585: if ($env{'request.role'} eq 'dc./'.$dcdom.'/') {
1586: $limit = $then;
1587: }
1588: if ($tstart && $tstart>$limit) { $livedc = 0; }
1589: if ($tend && $tend <$limit) { $livedc = 0; }
1590: if ($livedc) {
1591: $$dcroles{$dcdom} = $envkey;
1592: $numdc++;
1593: }
1594: }
1595: }
1596: }
1597: return $numdc;
1598: }
1599:
1600: sub adhoc_course_role {
1601: my ($refresh,$update,$then) = @_;
1602: my ($cdom,$cnum,$crstype);
1603: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
1604: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
1605: $crstype = &Apache::loncommon::course_type();
1606: if (&check_forcc($cdom,$cnum,$refresh,$update,$then,$crstype)) {
1607: my $setprivs;
1608: if (!defined($env{'user.role.'.$env{'form.switchrole'}})) {
1609: $setprivs = 1;
1610: } else {
1611: my ($start,$end) = split(/\./,$env{'user.role.'.$env{'form.switchrole'}});
1612: if (($start && ($start>$refresh || $start == -1)) ||
1613: ($end && $end<$update)) {
1614: $setprivs = 1;
1615: }
1616: }
1617: if ($setprivs) {
1618: if ($env{'form.switchrole'} =~ m-^(in|ta|ep|ad|st|cr)([\w/]*)\./\Q$cdom\E/\Q$cnum\E/?(\w*)$-) {
1619: my $role = $1;
1620: my $custom_role = $2;
1621: my $usec = $3;
1622: if ($role eq 'cr') {
1623: if ($custom_role =~ m-^/$match_domain/$match_username/\w+$-) {
1624: $role .= $custom_role;
1625: } else {
1626: return;
1627: }
1628: }
1629: my (%userroles,%newrole,%newgroups,%group_privs);
1630: my %cgroups =
1631: &Apache::lonnet::get_active_groups($env{'user.domain'},
1632: $env{'user.name'},$cdom,$cnum);
1633: foreach my $group (keys(%cgroups)) {
1634: $group_privs{$group} =
1635: $env{'user.priv.cc./'.$cdom.'/'.$cnum.'./'.$cdom.'/'.$cnum.'/'.$group};
1636: }
1637: $newgroups{'/'.$cdom.'/'.$cnum} = \%group_privs;
1638: my $area = '/'.$cdom.'/'.$cnum;
1639: my $spec = $role.'.'.$area;
1640: if ($usec ne '') {
1641: $spec .= '/'.$usec;
1642: $area .= '/'.$usec;
1643: }
1644: &Apache::lonnet::standard_roleprivs(\%newrole,$role,$cdom,$spec,$cnum,$area);
1645: &Apache::lonnet::set_userprivs(\%userroles,\%newrole,\%newgroups);
1646: my $adhocstart = $refresh-1;
1647: $userroles{'user.role.'.$spec} = $adhocstart.'.';
1648: &Apache::lonnet::appenv(\%userroles,[$role,'cm']);
1649: }
1650: }
1651: }
1652: return;
1653: }
1654:
1655: sub check_forcc {
1656: my ($cdom,$cnum,$refresh,$update,$then,$crstype) = @_;
1657: my ($is_cc,$ccrole);
1658: if ($crstype eq 'Community') {
1659: $ccrole = 'co';
1660: } else {
1661: $ccrole = 'cc';
1662: }
1663: if ($cdom ne '' && $cnum ne '') {
1664: if (&Apache::lonnet::is_course($cdom,$cnum)) {
1665: my $envkey = 'user.role.'.$ccrole.'./'.$cdom.'/'.$cnum;
1666: if (defined($env{$envkey})) {
1667: $is_cc = 1;
1668: my ($tstart,$tend)=split(/\./,$env{$envkey});
1669: my $limit = $update;
1670: if ($env{'request.role'} eq $ccrole.'./'.$cdom.'/'.$cnum) {
1671: $limit = $then;
1672: }
1673: if ($tstart && $tstart>$refresh) { $is_cc = 0; }
1674: if ($tend && $tend <$limit) { $is_cc = 0; }
1675: }
1676: }
1677: }
1678: return $is_cc;
1679: }
1680:
1681: sub check_release_required {
1682: my ($loncaparev,$tcourseid,$trolecode,$required) = @_;
1683: my ($switchserver,$warning);
1684: if ($required ne '') {
1685: my ($reqdmajor,$reqdminor) = ($required =~ /^(\d+)\.(\d+)$/);
1686: my ($major,$minor) = ($loncaparev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
1687: if ($reqdmajor ne '' && $reqdminor ne '') {
1688: my $otherserver;
1689: if (($major eq '' && $minor eq '') ||
1690: (($reqdmajor > $major) || (($reqdmajor == $major) && ($reqdminor > $minor)))) {
1691: my ($userdomserver) = &Apache::lonnet::choose_server($env{'user.domain'});
1692: my $switchlcrev =
1693: &Apache::lonnet::get_server_loncaparev($env{'user.domain'},
1694: $userdomserver);
1695: my ($swmajor,$swminor) = ($switchlcrev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
1696: if (($swmajor eq '' && $swminor eq '') || ($reqdmajor > $swmajor) ||
1697: (($reqdmajor == $swmajor) && ($reqdminor > $swminor))) {
1698: my $cdom = $env{'course.'.$tcourseid.'.domain'};
1699: if ($cdom ne $env{'user.domain'}) {
1700: my ($coursedomserver,$coursehostname) = &Apache::lonnet::choose_server($cdom);
1701: my $serverhomeID = &Apache::lonnet::get_server_homeID($coursehostname);
1702: my $serverhomedom = &Apache::lonnet::host_domain($serverhomeID);
1703: my %defdomdefaults = &Apache::lonnet::get_domain_defaults($serverhomedom);
1704: my %udomdefaults = &Apache::lonnet::get_domain_defaults($env{'user.domain'});
1705: my $remoterev = &Apache::lonnet::get_server_loncaparev($serverhomedom,$coursedomserver);
1706: my $canhost =
1707: &Apache::lonnet::can_host_session($env{'user.domain'},
1708: $coursedomserver,
1709: $remoterev,
1710: $udomdefaults{'remotesessions'},
1711: $defdomdefaults{'hostedsessions'});
1712:
1713: if ($canhost) {
1714: $otherserver = $coursedomserver;
1715: } else {
1716: $warning = &mt('Requires LON-CAPA version [_1].',$env{'course.'.$tcourseid.'.internal.releaserequired'}).'<br />'. &mt("No suitable server could be found amongst servers in either your own domain or in the course's domain.");
1717: }
1718: } else {
1719: $warning = &mt('Requires LON-CAPA version [_1].',$env{'course.'.$tcourseid.'.internal.releaserequired'}).'<br />'.&mt("No suitable server could be found amongst servers in your own domain (which is also the course's domain).");
1720: }
1721: } else {
1722: $otherserver = $userdomserver;
1723: }
1724: }
1725: if ($otherserver ne '') {
1726: $switchserver = 'otherserver='.$otherserver.'&role='.$trolecode;
1727: }
1728: }
1729: }
1730: return ($switchserver,$warning);
1731: }
1732:
1733: sub update_content_constraints {
1734: my ($cdom,$cnum,$chome,$cid) = @_;
1735: my %curr_reqd_hash = &Apache::lonnet::userenvironment($cdom,$cnum,'internal.releaserequired');
1736: my ($reqdmajor,$reqdminor) = split(/\./,$curr_reqd_hash{'internal.releaserequired'});
1737: my %checkresponsetypes;
1738: foreach my $key (keys(%Apache::lonnet::needsrelease)) {
1739: my ($item,$name,$value) = split(/:/,$key);
1740: if ($item eq 'resourcetag') {
1741: if ($name eq 'responsetype') {
1742: $checkresponsetypes{$value} = $Apache::lonnet::needsrelease{$key}
1743: }
1744: }
1745: }
1746: my $navmap = Apache::lonnavmaps::navmap->new();
1747: if (defined($navmap)) {
1748: my %allresponses;
1749: foreach my $res ($navmap->retrieveResources(undef,sub { $_[0]->is_problem() },1,0)) {
1750: my %responses = $res->responseTypes();
1751: foreach my $key (keys(%responses)) {
1752: next unless(exists($checkresponsetypes{$key}));
1753: $allresponses{$key} += $responses{$key};
1754: }
1755: }
1756: foreach my $key (keys(%allresponses)) {
1757: my ($major,$minor) = split(/\./,$checkresponsetypes{$key});
1758: if (($major > $reqdmajor) || ($major == $reqdmajor && $minor > $reqdminor)) {
1759: ($reqdmajor,$reqdminor) = ($major,$minor);
1760: }
1761: }
1762: undef($navmap);
1763: }
1764: unless (($reqdmajor eq '') && ($reqdminor eq '')) {
1765: &Apache::lonnet::update_released_required($reqdmajor.'.'.$reqdminor,$cdom,$cnum,$chome,$cid);
1766: }
1767: return;
1768: }
1769:
1770: sub courselink {
1771: my ($dcdom,$rowtype) = @_;
1772: my $courseform=&Apache::loncommon::selectcourse_link
1773: ('rolechoice','dccourse'.$rowtype.'_'.$dcdom,
1774: 'dcdomain'.$rowtype.'_'.$dcdom,'coursedesc'.$rowtype.'_'.
1775: $dcdom,$dcdom,undef,'Course/Community');
1776: my $hiddenitems = '<input type="hidden" name="dcdomain'.$rowtype.'_'.$dcdom.'" value="'.$dcdom.'" />'.
1777: '<input type="hidden" name="origdom'.$rowtype.'_'.$dcdom.'" value="'.$dcdom.'" />'.
1778: '<input type="hidden" name="dccourse'.$rowtype.'_'.$dcdom.'" value="" />'.
1779: '<input type="hidden" name="coursedesc'.$rowtype.'_'.$dcdom.'" value="" />';
1780: return $courseform.$hiddenitems;
1781: }
1782:
1783: sub coursepick_jscript {
1784: my %lt = &Apache::lonlocal::texthash(
1785: 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.",
1786: youc => 'You can only use this screen to select courses and communities in the current domain.',
1787: );
1788: my $verify_script = <<"END";
1789: <script type="text/javascript">
1790: // <![CDATA[
1791: function verifyCoursePick(caller) {
1792: var numbutton = getIndex(caller)
1793: var pickedCourse = document.rolechoice.elements[numbutton+4].value
1794: var pickedDomain = document.rolechoice.elements[numbutton+2].value
1795: if (document.rolechoice.elements[numbutton+2].value == document.rolechoice.elements[numbutton+3].value) {
1796: if (pickedCourse != '') {
1797: if (numbutton != -1) {
1798: var courseTarget = "cc./"+pickedDomain+"/"+pickedCourse
1799: document.rolechoice.elements[numbutton+1].name = courseTarget
1800: document.rolechoice.submit()
1801: }
1802: }
1803: else {
1804: alert("$lt{'plsu'}");
1805: }
1806: }
1807: else {
1808: alert("$lt{'youc'}")
1809: }
1810: }
1811: function getIndex(caller) {
1812: for (var i=0;i<document.rolechoice.elements.length;i++) {
1813: if (document.rolechoice.elements[i] == caller) {
1814: return i;
1815: }
1816: }
1817: return -1;
1818: }
1819: // ]]>
1820: </script>
1821: END
1822: return $verify_script;
1823: }
1824:
1825: sub coauthorlink {
1826: my ($dcdom,$rowtype) = @_;
1827: my $coauthorform=&Apache::loncommon::selectauthor_link('rolechoice',$dcdom);
1828: my $hiddenitems = '<input type="hidden" name="adhoccauname'.$rowtype.'_'.$dcdom.'" value="" />';
1829: return $coauthorform.$hiddenitems;
1830: }
1831:
1832: sub display_cc_role {
1833: my $rolekey = shift;
1834: my ($roletext,$roletext_end);
1835: my $advanced = $env{'user.adv'};
1836: my $tryagain = $env{'form.tryagain'};
1837: unless ($rolekey =~/^error\:/) {
1838: if ($rolekey =~ m{^user\.role\.(cc|co)\./($match_domain)/($match_courseid)$}) {
1839: my $ccrole = $1;
1840: my $tdom = $2;
1841: my $trest = $3;
1842: my $tcourseid = $tdom.'_'.$trest;
1843: my $trolecode = $ccrole.'./'.$tdom.'/'.$trest;
1844: my $twhere;
1845: my $ttype;
1846: my $tbg='LC_roles_is';
1847: my %newhash=&Apache::lonnet::coursedescription($tcourseid);
1848: if (%newhash) {
1849: $twhere=$newhash{'description'}.
1850: ' <span class="LC_fontsize_small">'.
1851: &Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$trest,$tdom).
1852: '</span>';
1853: $ttype = $newhash{'type'};
1854: } else {
1855: $twhere=&mt('Currently not available');
1856: $env{'course.'.$tcourseid.'.description'}=$twhere;
1857: }
1858: my $trole = &Apache::lonnet::plaintext($ccrole,$ttype,$tcourseid);
1859: $twhere.="<br />".&mt('Domain').":".$tdom;
1860: ($roletext,$roletext_end) = &build_roletext($trolecode,$tdom,$trest,'is',$tryagain,$advanced,'',$tbg,$trole,$twhere,'','','',1,'');
1861: }
1862: }
1863: return ($roletext,$roletext_end);
1864: }
1865:
1866: sub adhoc_roles_row {
1867: my ($dcdom,$rowtype) = @_;
1868: my $output = &Apache::loncommon::continue_data_table_row()
1869: .' <td colspan="5">'
1870: .&mt('[_1]Ad hoc[_2] roles in domain [_3] --'
1871: ,'<span class="LC_cusr_emph">','</span>',$dcdom)
1872: .' ';
1873: my $selectcclink = &courselink($dcdom,$rowtype);
1874: my $ccrole = &Apache::lonnet::plaintext('co',undef,undef,1);
1875: my $carole = &Apache::lonnet::plaintext('ca');
1876: my $selectcalink = &coauthorlink($dcdom,$rowtype);
1877: $output.=$ccrole.': '.$selectcclink
1878: .' | '.$carole.': '.$selectcalink.'</td>'
1879: .&Apache::loncommon::end_data_table_row();
1880: return $output;
1881: }
1882:
1883: sub recent_filename {
1884: my $area=shift;
1885: return 'nohist_recent_'.&escape($area);
1886: }
1887:
1888: sub courseloadpage {
1889: my ($courseid) = @_;
1890: my $startpage;
1891: my %entry_settings = &Apache::lonnet::get('nohist_whatsnew',
1892: [$courseid.':courseinit']);
1893: my ($tmp) = %entry_settings;
1894: unless ($tmp =~ /^error: 2 /) {
1895: $startpage = $entry_settings{$courseid.':courseinit'};
1896: }
1897: if ($startpage eq '') {
1898: if (exists($env{'environment.course_init_display'})) {
1899: $startpage = $env{'environment.course_init_display'};
1900: }
1901: }
1902: return $startpage;
1903: }
1904:
1905: sub update_session_roles {
1906: my $then=$env{'user.login.time'};
1907: my $refresh=$env{'user.refresh.time'};
1908: if (!$refresh) {
1909: $refresh = $then;
1910: }
1911: my $update = $env{'user.update.time'};
1912: if (!$update) {
1913: $update = $then;
1914: }
1915: my $now = time;
1916: my %roleshash =
1917: &Apache::lonnet::get_my_roles('','','userroles',
1918: ['active','future','previous'],
1919: undef,undef,1);
1920: my ($msg,@newsec,$oldsec,$currrole_expired,@changed_roles,
1921: %changed_groups,%dbroles,%deletedroles,%allroles,%allgroups,
1922: %userroles,%checkedgroup,%crprivs,$hasgroups,%rolechange,
1923: %groupchange,%newrole,%newgroup,%customprivchg,%groups_roles,
1924: @rolecodes);
1925: my @possroles = ('cr','st','ta','ad','ep','in','co','cc');
1926: my %courseroles;
1927: foreach my $item (keys(%roleshash)) {
1928: my ($uname,$udom,$role,$remainder) = split(/:/,$item,4);
1929: my ($tstart,$tend) = split(/:/,$roleshash{$item});
1930: my ($section,$group,@group_privs);
1931: if ($role =~ m{^gr/(\w*)$}) {
1932: $role = 'gr';
1933: my $priv = $1;
1934: next if ($tstart eq '-1');
1935: if (&curr_role_status($tstart,$tend,$refresh,$now) eq 'active') {
1936: if ($priv ne '') {
1937: push(@group_privs,$priv);
1938: }
1939: }
1940: if ($remainder =~ /:/) {
1941: (my $additional_privs,$group) =
1942: ($remainder =~ /^([\w:]+):([^:]+)$/);
1943: if ($additional_privs ne '') {
1944: if (&curr_role_status($tstart,$tend,$refresh,$now) eq 'active') {
1945: push(@group_privs,split(/:/,$additional_privs));
1946: @group_privs = sort(@group_privs);
1947: }
1948: }
1949: } else {
1950: $group = $remainder;
1951: }
1952: } else {
1953: $section = $remainder;
1954: }
1955: my $where = "/$udom/$uname";
1956: if ($section ne '') {
1957: $where .= "/$section";
1958: } elsif ($group ne '') {
1959: $where .= "/$group";
1960: }
1961: my $rolekey = "$role.$where";
1962: my $envkey = "user.role.$rolekey";
1963: $dbroles{$envkey} = 1;
1964: if (($env{'request.role'} eq $rolekey) && ($role ne 'st')) {
1965: if (&curr_role_status($tstart,$tend,$refresh,$now) ne 'active') {
1966: $currrole_expired = 1;
1967: }
1968: }
1969: if ($env{$envkey} eq '') {
1970: my $status_in_db =
1971: &curr_role_status($tstart,$tend,$refresh,$now);
1972: &gather_roleprivs(\%allroles,\%allgroups,\%userroles,$where,$role,$tstart,$tend,$status_in_db);
1973: if (($role eq 'st') && ($env{'request.role'} =~ m{^\Q$role\E\.\Q/$udom/$uname\E})) {
1974: if ($status_in_db eq 'active') {
1975: if ($section eq '') {
1976: push(@newsec,'none');
1977: } else {
1978: push(@newsec,$section);
1979: }
1980: }
1981: } else {
1982: unless (grep(/^\Q$role\E$/,@changed_roles)) {
1983: push(@changed_roles,$role);
1984: }
1985: if ($status_in_db ne 'previous') {
1986: if ($role eq 'gr') {
1987: $newgroup{$rolekey} = $status_in_db;
1988: if ($status_in_db eq 'active') {
1989: unless (ref($courseroles{$udom}) eq 'HASH') {
1990: %{$courseroles{$udom}} =
1991: &Apache::lonnet::get_my_roles('','','userroles',
1992: ['active'],\@possroles,
1993: [$udom],1);
1994: }
1995: &Apache::lonnet::get_groups_roles($udom,$uname,
1996: $courseroles{$udom},
1997: \@rolecodes,\%groups_roles);
1998: }
1999: } else {
2000: $newrole{$rolekey} = $status_in_db;
2001: }
2002: }
2003: }
2004: } else {
2005: my ($currstart,$currend) = split(/\./,$env{$envkey});
2006: if ($role eq 'gr') {
2007: if (&curr_role_status($currstart,$currend,$refresh,$update) ne 'previous') {
2008: $hasgroups = 1;
2009: }
2010: }
2011: if (($currstart ne $tstart) || ($currend ne $tend)) {
2012: my $status_in_env =
2013: &curr_role_status($currstart,$currend,$refresh,$update);
2014: my $status_in_db =
2015: &curr_role_status($tstart,$tend,$refresh,$now);
2016: if ($status_in_env ne $status_in_db) {
2017: if ($status_in_env eq 'active') {
2018: if ($role eq 'st') {
2019: if ($env{'request.role'} eq $rolekey) {
2020: my $switchsection;
2021: unless (ref($courseroles{$udom}) eq 'HASH') {
2022: %{$courseroles{$udom}} =
2023: &Apache::lonnet::get_my_roles('','','userroles',
2024: ['active'],
2025: \@possroles,[$udom],1);
2026: }
2027: foreach my $crsrole (keys(%{$courseroles{$udom}})) {
2028: if ($crsrole =~ /^\Q$uname\E:\Q$udom\E:st/) {
2029: $switchsection = 1;
2030: last;
2031: }
2032: }
2033: if ($switchsection) {
2034: if ($section eq '') {
2035: $oldsec = 'none';
2036: } else {
2037: $oldsec = $section;
2038: }
2039: &gather_roleprivs(\%allroles,\%allgroups,\%userroles,$where,$role,$tstart,$tend,$status_in_db);
2040: } else {
2041: $currrole_expired = 1;
2042: next;
2043: }
2044: }
2045: }
2046: unless ($rolekey eq $env{'request.role'}) {
2047: if ($role eq 'gr') {
2048: &Apache::lonnet::delete_env_groupprivs($where,\%courseroles,\@possroles);
2049: } else {
2050: &Apache::lonnet::delenv("user.priv.$rolekey",undef,[$role]);
2051: &Apache::lonnet::delenv("user.priv.cm.$where",undef,['cm']);
2052: }
2053: &gather_roleprivs(\%allroles,\%allgroups,\%userroles,$where,$role,$tstart,$tend,$status_in_db);
2054: }
2055: } elsif ($status_in_db eq 'active') {
2056: if (($role eq 'st') &&
2057: ($env{'request.role'} =~ m{^\Q$role\E\.\Q/$udom/$uname\E})) {
2058: if ($section eq '') {
2059: push(@newsec,'none');
2060: } else {
2061: push(@newsec,$section);
2062: }
2063: } elsif ($role eq 'gr') {
2064: unless (ref($courseroles{$udom}) eq 'HASH') {
2065: %{$courseroles{$udom}} =
2066: &Apache::lonnet::get_my_roles('','','userroles',
2067: ['active'],
2068: \@possroles,[$udom],1);
2069: }
2070: &Apache::lonnet::get_groups_roles($udom,$uname,
2071: $courseroles{$udom},
2072: \@rolecodes,\%groups_roles);
2073: }
2074: &gather_roleprivs(\%allroles,\%allgroups,\%userroles,$where,$role,$tstart,$tend,$status_in_db);
2075: }
2076: unless (grep(/^\Q$role\E$/,@changed_roles)) {
2077: push(@changed_roles,$role);
2078: }
2079: if ($role eq 'gr') {
2080: $groupchange{"/$udom/$uname"}{$group} = $status_in_db;
2081: } else {
2082: $rolechange{$rolekey} = $status_in_db;
2083: }
2084: }
2085: } else {
2086: if ($role eq 'gr') {
2087: unless ($checkedgroup{$where}) {
2088: my $status_in_db =
2089: &curr_role_status($tstart,$tend,$refresh,$now);
2090: if ($tstart eq '-1') {
2091: $status_in_db = 'deleted';
2092: }
2093: unless (ref($courseroles{$udom}) eq 'HASH') {
2094: %{$courseroles{$udom}} =
2095: &Apache::lonnet::get_my_roles('','','userroles',
2096: ['active'],
2097: \@possroles,[$udom],1);
2098: }
2099: if (ref($courseroles{$udom}) eq 'HASH') {
2100: foreach my $item (keys(%{$courseroles{$udom}})) {
2101: next unless ($item =~ /^\Q$uname\E/);
2102: my ($cnum,$cdom,$crsrole,$crssec) = split(/:/,$item);
2103: my $area = '/'.$cdom.'/'.$cnum;
2104: if ($crssec ne '') {
2105: $area .= '/'.$crssec;
2106: }
2107: my $crsrolekey = $crsrole.'.'.$area;
2108: my $currprivs = $env{'user.priv.'.$crsrole.'.'.$area.'.'.$where};
2109: $currprivs =~ s/^://;
2110: $currprivs =~ s/\&F$//;
2111: my @curr_grp_privs = split(/\&F:/,$currprivs);
2112: @curr_grp_privs = sort(@curr_grp_privs);
2113: my @diffs;
2114: if (@group_privs > 0 || @curr_grp_privs > 0) {
2115: @diffs = &Apache::loncommon::compare_arrays(\@group_privs,\@curr_grp_privs);
2116: }
2117: if (@diffs == 0) {
2118: last;
2119: } else {
2120: unless(grep(/^\Qgr\E$/,@rolecodes)) {
2121: push(@rolecodes,'gr');
2122: }
2123: &gather_roleprivs(\%allroles,\%allgroups,
2124: \%userroles,$where,$role,
2125: $tstart,$tend,$status_in_db);
2126: if ($status_in_db eq 'active') {
2127: &Apache::lonnet::get_groups_roles($udom,$uname,
2128: $courseroles{$udom},
2129: \@rolecodes,\%groups_roles);
2130: }
2131: $changed_groups{$udom.'_'.$uname}{$group} = $status_in_db;
2132: last;
2133: }
2134: }
2135: }
2136: $checkedgroup{$where} = 1;
2137: }
2138: } elsif ($role =~ /^cr/) {
2139: my $status_in_db =
2140: &curr_role_status($tstart,$tend,$refresh,$now);
2141: my ($rdummy,$rest) = split(/\//,$role,2);
2142: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$role);
2143: my %currpriv;
2144: unless (exists($crprivs{$rest})) {
2145: my ($rdomain,$rauthor,$rrole)=split(/\//,$rest);
2146: my $homsvr=&Apache::lonnet::homeserver($rauthor,$rdomain);
2147: if (&Apache::lonnet::hostname($homsvr) ne '') {
2148: my ($rdummy,$roledef)=
2149: &Apache::lonnet::get('roles',["rolesdef_$rrole"],
2150: $rdomain,$rauthor);
2151: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
2152: my $i = 0;
2153: my @scopes = ('sys','dom','crs');
2154: my @privs = split(/\_/,$roledef);
2155: foreach my $priv (@privs) {
2156: my ($blank,@prv) = split(/:/,$priv);
2157: @prv = map { $_ .= (/\&\w+$/ ? '':'&F') } @prv;
2158: if (@prv) {
2159: $priv = ':'.join(':',sort(@prv));
2160: }
2161: $crprivs{$rest}{$scopes[$i]} = $priv;
2162: $i++;
2163: }
2164: }
2165: }
2166: }
2167: $currpriv{sys} = $env{"user.priv.$rolekey./"};
2168: $currpriv{dom} = $env{"user.priv.$rolekey./$udom/"};
2169: $currpriv{crs} = $env{"user.priv.$rolekey.$where"};
2170: if (keys(%crprivs)) {
2171: if (($crprivs{$rest}{sys} ne $currpriv{sys}) ||
2172: ($crprivs{$rest}{dom} ne $currpriv{dom})
2173: ||
2174: ($crprivs{$rest}{crs} ne $currpriv{crs})) {
2175: &gather_roleprivs(\%allroles,\%allgroups,\%userroles,$where,$role,$tstart,$tend,$status_in_db);
2176: unless (grep(/^\Q$role\E$/,@changed_roles)) {
2177: push(@changed_roles,$role);
2178: }
2179: my $status_in_env =
2180: &curr_role_status($currstart,$currend,$refresh,$update);
2181: if ($status_in_env eq 'active') {
2182: $customprivchg{$rolekey} = $status_in_env;
2183: }
2184: }
2185: }
2186: }
2187: }
2188: }
2189: }
2190: foreach my $envkey (keys(%env)) {
2191: next unless ($envkey =~ /^user\.role\./);
2192: next if ($dbroles{$envkey});
2193: next if ($envkey eq 'user.role.'.$env{'request.role'});
2194: my ($currstart,$currend) = split(/\./,$env{$envkey});
2195: my $status_in_env =
2196: &curr_role_status($currstart,$currend,$refresh,$update);
2197: my ($rolekey) = ($envkey =~ /^user\.role\.(.+)$/);
2198: my ($role,$rest)=split(/\./,$rolekey,2);
2199: if (&Apache::lonnet::delenv($envkey,undef,[$role])) {
2200: if ($status_in_env eq 'active') {
2201: if ($role eq 'gr') {
2202: &Apache::lonnet::delete_env_groupprivs($rest,\%courseroles,
2203: \@possroles);
2204: } else {
2205: &Apache::lonnet::delenv("user.priv.$rolekey",undef,[$role]);
2206: &Apache::lonnet::delenv("user.priv.cm.$rest",undef,['cm']);
2207: }
2208: unless (grep(/^\Q$role\E$/,@changed_roles)) {
2209: push(@changed_roles,$role);
2210: }
2211: $deletedroles{$rolekey} = 1;
2212: }
2213: }
2214: }
2215: if (($oldsec) && (@newsec > 0)) {
2216: if (@newsec > 1) {
2217: $msg = '<div 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.').'</div>';
2218: } else {
2219: my $newrole = $env{'request.role'};
2220: if ($newsec[0] eq 'none') {
2221: $newrole =~ s{(/[^/])$}{};
2222: } elsif ($oldsec eq 'none') {
2223: $newrole .= '/'.$newsec[0];
2224: } else {
2225: $newrole =~ s{([^/]+)$}{$newsec[0]};
2226: }
2227: my $coursedesc = $env{'course.'.$env{'request.course.id'}.'.description'};
2228: my ($curr_role) = ($env{'request.role'} =~ m{^(\w+)\./$match_domain/$match_courseid});
2229: my %temp=('logout_'.$env{'request.course.id'} => time);
2230: &Apache::lonnet::put('email_status',\%temp);
2231: &Apache::lonnet::delenv('user.state.'.$env{'request.course.id'});
2232: &Apache::lonnet::appenv({"request.course.id" => '',
2233: "request.course.fn" => '',
2234: "request.course.uri" => '',
2235: "request.course.sec" => '',
2236: "request.role" => 'cm',
2237: "request.role.adv" => $env{'user.adv'},
2238: "request.role.domain" => $env{'user.domain'}});
2239: my $rolename = &Apache::loncommon::plainname($curr_role);
2240: $msg = '<p><form name="reselectrole" action="/adm/roles" method="post" />'.
2241: '<input type="hidden" name="newrole" value="" />'.
2242: '<input type="hidden" name="selectrole" value="1" />'.
2243: '<span class="LC_info">'.
2244: &mt('Your section has changed for your current [_1] role in [_2].',$rolename,$coursedesc).'</span><br />';
2245: my $button = '<input type="button" name="sectionchanged" value="'.
2246: &mt('Re-Select').'" onclick="javascript:enterrole(this.form,'."'$newrole','sectionchanged'".')" />';
2247: if ($newsec[0] eq 'none') {
2248: $msg .= &mt('[_1] to continue with your new section-less role.',$button);
2249: } else {
2250: $msg .= &mt('[_1] to continue with your new role in section ([_2]).',$button,$newsec[0]);
2251: }
2252: $msg .= '</form></p>';
2253: }
2254: } elsif ($currrole_expired) {
2255: $msg .= '<div class="LC_warning">';
2256: if (&Apache::loncommon::show_course()) {
2257: $msg .= &mt('Your role in the current course has expired.');
2258: } else {
2259: $msg .= &mt('Your current role has expired.');
2260: }
2261: $msg .= '<br />'.&mt('However you can continue to use this role until you logout, click the "Re-Select" button, or your session has been idle for more than 24 hours.').'</div>';
2262: }
2263: if (!@changed_roles || !(keys(%changed_groups))) {
2264: my ($rolesmsg,$groupsmsg);
2265: if (!@changed_roles) {
2266: if (&Apache::loncommon::show_course()) {
2267: $rolesmsg = &mt('No new courses or communities');
2268: } else {
2269: $rolesmsg = &mt('No role changes');
2270: }
2271: }
2272: if ($hasgroups && !(keys(%changed_groups)) && !(grep(/gr/,@changed_roles))) {
2273: $groupsmsg = &mt('No changes in course/community groups');
2274: }
2275: if (!@changed_roles && !(keys(%changed_groups))) {
2276: if (($msg ne '') || ($groupsmsg ne '')) {
2277: $msg .= '<ul>';
2278: if ($rolesmsg) {
2279: $msg .= '<li>'.$rolesmsg.'</li>';
2280: }
2281: if ($groupsmsg) {
2282: $msg .= '<li>'.$groupsmsg.'</li>';
2283: }
2284: $msg .= '</ul>';
2285: } else {
2286: $msg = ' <span class="LC_cusr_emph">'.$rolesmsg.'</span><br />';
2287: }
2288: return $msg;
2289: }
2290: }
2291: my $changemsg;
2292: if (@changed_roles > 0) {
2293: if (keys(%newgroup) > 0) {
2294: my $groupmsg;
2295: foreach my $item (sort(keys(%newgroup))) {
2296: if (&is_active_course($item,$refresh,$update,\%roleshash)) {
2297: $groupmsg .= '<li>'.
2298: &mt('[_1] with status: [_2].',
2299: $item,$newgroup{$item}).'</li>';
2300: }
2301: }
2302: if ($groupmsg) {
2303: $changemsg .= '<li>'.
2304: &mt('Courses with new groups').'</li>'.
2305: '<ul>'.$groupmsg.'</ul></li>';
2306: }
2307: }
2308: if (keys(%newrole) > 0) {
2309: $changemsg .= '<li>'.&mt('New roles').
2310: '<ul>';
2311: foreach my $item (sort(keys(%newrole))) {
2312: $changemsg .= '<li>'.
2313: &mt('[_1] with status: [_2].',
2314: $item,$newrole{$item}).'</li>';
2315: }
2316: $changemsg .= '</ul></li>';
2317: }
2318: if (keys(%customprivchg) > 0) {
2319: $changemsg .= '<li>'.
2320: &mt('Custom roles with privilege changes').
2321: '<ul>';
2322: foreach my $item (sort(keys(%customprivchg))) {
2323: $changemsg .= '<li>'.$item.'</li>';
2324: }
2325: $changemsg .= '</ul></li>';
2326: }
2327: if (keys(%rolechange) > 0) {
2328: $changemsg .= '<li>'.
2329: &mt('Existing roles with status changes').'</li>'.
2330: '<ul>';
2331: foreach my $item (sort(keys(%rolechange))) {
2332: $changemsg .= '<li>'.
2333: &mt('[_1] status now: [_2].',$item,
2334: $rolechange{$item}).'</li>';
2335: }
2336: $changemsg .= '</ul></li>';
2337: }
2338: if (keys(%deletedroles) > 0) {
2339: $changemsg .= '<li>'.
2340: &mt('Existing roles deleted').'</li>'.
2341: '<ul>';
2342: foreach my $item (sort(keys(%deletedroles))) {
2343: $changemsg .= '<li>'.$item.'</li>';
2344: }
2345: $changemsg .= '</ul></li>';
2346: }
2347: }
2348: if ((keys(%changed_groups) > 0) || (keys(%groupchange) > 0)) {
2349: my $groupchgmsg;
2350: foreach my $key (sort(keys(%changed_groups))) {
2351: my $crs = 'gr/'.$key;
2352: $crs =~ s/_/\//;
2353: if (&is_active_course($crs,$refresh,$update,\%roleshash)) {
2354: if (ref($changed_groups{$key}) eq 'HASH') {
2355: my @showgroups;
2356: foreach my $group (sort(keys(%{$changed_groups{$key}}))) {
2357: if ($changed_groups{$key}{$group} eq 'active') {
2358: push(@showgroups,$group);
2359: }
2360: }
2361: if (@showgroups > 0) {
2362: $groupchgmsg .= '<li>'.
2363: &mt('Course: [_1], groups: [_2].',$key,
2364: join(', ',@showgroups)).
2365: '</li>';
2366: }
2367: }
2368: }
2369: }
2370: if (keys(%groupchange) > 0) {
2371: $groupchgmsg .= '<li>'.
2372: &mt('Existing course/community groups with status changes').'</li>'.
2373: '<ul>';
2374: foreach my $crs (sort(keys(%groupchange))) {
2375: if (ref($groupchange{$crs}) eq 'HASH') {
2376: $groupchgmsg .= '<li>'.&mt('Course/Community: [_1]','<b>'.$crs.'</b><ul>');
2377: foreach my $group (sort(keys(%{$groupchange{$crs}}))) {
2378: $groupchgmsg .= '<li>'.&mt('Group: [_1] status now: [_2].','<b>'.$group.'</b>',$groupchange{$crs}{$group}).'</li>';
2379: }
2380: $groupchgmsg .= '</ul></li>';
2381: }
2382: }
2383: $groupchgmsg .= '</ul></li>';
2384: }
2385: if ($groupchgmsg) {
2386: $changemsg .= '<li>'.
2387: &mt('Courses with changes in groups').'</li>'.
2388: '<ul>'.$groupchgmsg.'</ul></li>';
2389: }
2390: }
2391: if ($changemsg) {
2392: $msg .= '<ul>'.$changemsg.'</ul>';
2393: }
2394: &Apache::lonnet::set_userprivs(\%userroles,\%allroles,\%allgroups,\%groups_roles);
2395: my ($curr_is_adv,$curr_role_adv,$curr_author,$curr_role_author);
2396: $curr_author = $env{'user.author'};
2397: if (($env{'request.role'} =~/^au/) || ($env{'request.role'} =~/^ca/) ||
2398: ($env{'request.role'} =~/^aa/)) {
2399: $curr_role_author=1;
2400: }
2401: $curr_is_adv = $env{'user.adv'};
2402: $curr_role_adv = $env{'request.role.adv'};
2403: if (keys(%userroles) > 0) {
2404: foreach my $role (@changed_roles) {
2405: unless(grep(/^\Q$role\E$/,@rolecodes)) {
2406: push(@rolecodes,$role);
2407: }
2408: }
2409: unless(grep(/^\Qcm\E$/,@rolecodes)) {
2410: push(@rolecodes,'cm');
2411: }
2412: &Apache::lonnet::appenv(\%userroles,\@rolecodes);
2413: }
2414: my %newenv;
2415: if (&Apache::lonnet::is_advanced_user($env{'user.domain'},$env{'user.name'})) {
2416: unless ($curr_is_adv) {
2417: $newenv{'user.adv'} = 1;
2418: }
2419: } elsif ($curr_is_adv && !$curr_role_adv) {
2420: &Apache::lonnet::delenv('user.adv');
2421: }
2422: my %authorroleshash =
2423: &Apache::lonnet::get_my_roles('','','userroles',['active'],['au','ca','aa']);
2424: if (keys(%authorroleshash)) {
2425: unless ($curr_author) {
2426: $newenv{'user.author'} = 1;
2427: }
2428: } elsif ($curr_author && !$curr_role_author) {
2429: &Apache::lonnet::delenv('user.author');
2430: }
2431: if ($env{'request.course.id'}) {
2432: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
2433: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
2434: my (@activecrsgroups,$crsgroupschanged);
2435: if ($env{'request.course.groups'}) {
2436: @activecrsgroups = split(/:/,$env{'request.course.groups'});
2437: foreach my $item (keys(%deletedroles)) {
2438: if ($item =~ m{^gr\./\Q$cdom\E/\Q$cnum\E/(\w+)$}) {
2439: if (grep(/^\Q$1\E$/,@activecrsgroups)) {
2440: $crsgroupschanged = 1;
2441: last;
2442: }
2443: }
2444: }
2445: }
2446: unless ($crsgroupschanged) {
2447: foreach my $item (keys(%newgroup)) {
2448: if ($item =~ m{^gr\./\Q$cdom\E/\Q$cnum\E/(\w+)$}) {
2449: if ($newgroup{$item} eq 'active') {
2450: $crsgroupschanged = 1;
2451: last;
2452: }
2453: }
2454: }
2455: }
2456: if ((ref($changed_groups{$env{'request.course.id'}}) eq 'HASH') ||
2457: (ref($groupchange{"/$cdom/$cnum"}) eq 'HASH') ||
2458: ($crsgroupschanged)) {
2459: my %grouproles = &Apache::lonnet::get_my_roles('','','userroles',
2460: ['active'],['gr'],[$cdom],1);
2461: my @activegroups;
2462: foreach my $item (keys(%grouproles)) {
2463: next unless($item =~ /^\Q$cnum\E:\Q$cdom\E/);
2464: my $group;
2465: my ($crsn,$crsd,$role,$remainder) = split(/:/,$item,4);
2466: if ($remainder =~ /:/) {
2467: (my $other,$group) = ($remainder =~ /^([\w:]+):([^:]+)$/);
2468: } else {
2469: $group = $remainder;
2470: }
2471: if ($group ne '') {
2472: push(@activegroups,$group);
2473: }
2474: }
2475: $newenv{'request.course.groups'} = join(':',@activegroups);
2476: }
2477: }
2478: if (keys(%newenv)) {
2479: &Apache::lonnet::appenv(\%newenv);
2480: }
2481: return $msg;
2482: }
2483:
2484: sub curr_role_status {
2485: my ($start,$end,$refresh,$update) = @_;
2486: if (($start) && ($start<0)) { return 'deleted' };
2487: my $status = 'active';
2488: if (($end) && ($end<=$update)) {
2489: $status = 'previous';
2490: }
2491: if (($start) && ($refresh<$start)) {
2492: $status = 'future';
2493: }
2494: return $status;
2495: }
2496:
2497: sub gather_roleprivs {
2498: my ($allroles,$allgroups,$userroles,$area,$role,$tstart,$tend,$status) = @_;
2499: return unless ((ref($allroles) eq 'HASH') && (ref($allgroups) eq 'HASH') && (ref($userroles) eq 'HASH'));
2500: if (($area ne '') && ($role ne '')) {
2501: &Apache::lonnet::userrolelog($role,$env{'user.name'},$env{'user.domain'},
2502: $area,$tstart,$tend);
2503: my $spec=$role.'.'.$area;
2504: $userroles->{'user.role.'.$spec} = $tstart.'.'.$tend;
2505: my ($tdummy,$tdomain,$trest)=split(/\//,$area);
2506: if ($status eq 'active') {
2507: if ($role =~ /^cr\//) {
2508: &Apache::lonnet::custom_roleprivs($allroles,$role,$tdomain,$trest,$spec,$area);
2509: } elsif ($role eq 'gr') {
2510: my %rolehash = &Apache::lonnet::get('roles',[$area.'_'.$role],
2511: $env{'user.domain'},
2512: $env{'user.name'});
2513: my ($trole) = split(/_/,$rolehash{$area.'_'.$role},2);
2514: (undef,my $group_privs) = split(/\//,$trole);
2515: $group_privs = &unescape($group_privs);
2516: &Apache::lonnet::group_roleprivs($allgroups,$area,$group_privs,$tend,$tstart);
2517: } else {
2518: &Apache::lonnet::standard_roleprivs($allroles,$role,$tdomain,$spec,$trest,$area);
2519: }
2520: }
2521: }
2522: return;
2523: }
2524:
2525: sub is_active_course {
2526: my ($rolekey,$refresh,$update,$roleshashref) = @_;
2527: return unless(ref($roleshashref) eq 'HASH');
2528: my ($role,$cdom,$cnum) = split(/\//,$rolekey);
2529: my $is_active;
2530: foreach my $key (keys(%{$roleshashref})) {
2531: if ($key =~ /^\Q$cnum\E:\Q$cdom\E:/) {
2532: my ($tstart,$tend) = split(/:/,$roleshashref->{$key});
2533: my $status = &curr_role_status($tstart,$tend,$refresh,$update);
2534: if ($status eq 'active') {
2535: $is_active = 1;
2536: last;
2537: }
2538: }
2539: }
2540: return $is_active;
2541: }
2542:
2543: 1;
2544: __END__
2545:
2546: =head1 NAME
2547:
2548: Apache::lonroles - User Roles Screen
2549:
2550: =head1 SYNOPSIS
2551:
2552: Invoked by /etc/httpd/conf/srm.conf:
2553:
2554: <Location /adm/roles>
2555: PerlAccessHandler Apache::lonacc
2556: SetHandler perl-script
2557: PerlHandler Apache::lonroles
2558: ErrorDocument 403 /adm/login
2559: ErrorDocument 500 /adm/errorhandler
2560: </Location>
2561:
2562: =head1 OVERVIEW
2563:
2564: =head2 Choosing Roles
2565:
2566: C<lonroles> is a handler that allows a user to switch roles in
2567: mid-session. LON-CAPA attempts to work with "No Role Specified", the
2568: default role that a user has before selecting a role, as widely as
2569: possible, but certain handlers for example need specification which
2570: course they should act on, etc. Both in this scenario, and when the
2571: handler determines via C<lonnet>'s C<&allowed> function that a certain
2572: action is not allowed, C<lonroles> is used as error handler. This
2573: allows the user to select another role which may have permission to do
2574: what they were trying to do.
2575:
2576: =begin latex
2577:
2578: \begin{figure}
2579: \begin{center}
2580: \includegraphics[width=0.45\paperwidth,keepaspectratio]{Sample_Roles_Screen}
2581: \caption{\label{Sample_Roles_Screen}Sample Roles Screen}
2582: \end{center}
2583: \end{figure}
2584:
2585: =end latex
2586:
2587: =head2 Role Initialization
2588:
2589: 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.
2590:
2591: =head1 INTRODUCTION
2592:
2593: This module enables a user to select what role he wishes to
2594: operate under (instructor, student, teaching assistant, course
2595: coordinator, etc). These roles are pre-established by the actions
2596: of upper-level users.
2597:
2598: This is part of the LearningOnline Network with CAPA project
2599: described at http://www.lon-capa.org.
2600:
2601: =head1 HANDLER SUBROUTINE
2602:
2603: This routine is called by Apache and mod_perl.
2604:
2605: =over 4
2606:
2607: =item *
2608:
2609: Roles Initialization (yes/no)
2610:
2611: =item *
2612:
2613: Get Error Message from Environment
2614:
2615: =item *
2616:
2617: Who is this?
2618:
2619: =item *
2620:
2621: Generate Page Output
2622:
2623: =item *
2624:
2625: Choice or no choice
2626:
2627: =item *
2628:
2629: Table
2630:
2631: =item *
2632:
2633: Privileges
2634:
2635: =back
2636:
2637: =cut
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