1: # The LearningOnline Network with CAPA
2: # User Roles Screen
3: #
4: # $Id: lonroles.pm,v 1.256.2.6.2.1 2012/02/08 00:22:15 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.'/'.$cnum);
517: if (($env{'form.orgurl'}) &&
518: ($env{'form.orgurl'}!~/^\/adm\/flip/)) {
519: my $dest=$env{'form.orgurl'};
520: if ($env{'form.symb'}) {
521: if ($dest =~ /\?/) {
522: $dest .= '&';
523: } else {
524: $dest .= '?'
525: }
526: $dest .= 'symb='.$env{'form.symb'};
527: }
528: if (&Apache::lonnet::allowed('adv') eq 'F') { $tadv=1; }
529: &Apache::lonnet::appenv({'request.role.adv'=>$tadv});
530: if (($ferr) && ($tadv)) {
531: &error_page($r,$ferr,$dest);
532: } else {
533: if ($dest =~ m{^/adm/coursedocs\?folderpath}) {
534: if ($env{'request.course.id'} eq $cdom.'_'.$cnum) {
535: my $chome = &Apache::lonnet::homeserver($cnum,$cdom);
536: &update_content_constraints($cdom,$cnum,$chome,$cdom.'_'.$cnum);
537: }
538: }
539: $r->internal_redirect($dest);
540: }
541: return OK;
542: } else {
543: if (!$env{'request.course.id'}) {
544: &Apache::lonnet::appenv(
545: {"request.course.id" => $cdom.'_'.$cnum});
546: $furl='/adm/roles?tryagain=1';
547: $msg='<p><span class="LC_error">'
548: .&mt('Could not initialize [_1] at this time.',
549: $env{'course.'.$cdom.'_'.$cnum.'.description'})
550: .'</span></p>'
551: .'<p>'.&mt('Please try again.').'</p>'
552: .'<p>'.$ferr.'</p>';
553: }
554: if (&Apache::lonnet::allowed('adv') eq 'F') { $tadv=1; }
555: &Apache::lonnet::appenv({'request.role.adv'=>$tadv});
556:
557: if (($ferr) && ($tadv)) {
558: &error_page($r,$ferr,$furl);
559: } else {
560: # Check to see if the user is a CC entering a course
561: # for the first time
562: my (undef, undef, $role, $courseid) = split(/\./, $envkey);
563: if (substr($courseid, 0, 1) eq '/') {
564: $courseid = substr($courseid, 1);
565: }
566: $courseid =~ s/\//_/;
567: if ((($role eq 'cc') || ($role eq 'co'))
568: && ($env{'course.' . $courseid .'.course.helper.not.run'})) {
569: $furl = "/adm/helper/course.initialization.helper";
570: # Send the user to the course they selected
571: } elsif ($env{'request.course.id'}) {
572: if ($env{'form.destinationurl'}) {
573: my $dest = $env{'form.destinationurl'};
574: if ($env{'form.destsymb'} ne '') {
575: my $esc_symb = &HTML::Entities::encode($env{'form.destsymb'},'"<>&');
576: $dest .= '?symb='.$esc_symb;
577: }
578: &redirect_user($r, &mt('Entering [_1]',
579: $env{'course.'.$courseid.'.description'}),
580: $dest, $msg,
581: $env{'environment.remotenavmap'});
582: return OK;
583: }
584: if (&Apache::lonnet::allowed('whn',
585: $env{'request.course.id'})
586: || &Apache::lonnet::allowed('whn',
587: $env{'request.course.id'}.'/'
588: .$env{'request.course.sec'})
589: ) {
590: my $startpage = &courseloadpage($courseid);
591: unless ($startpage eq 'firstres') {
592: $msg = &mt('Entering [_1] ...',
593: $env{'course.'.$courseid.'.description'});
594: &redirect_user($r,&mt('New in course'),
595: '/adm/whatsnew?refpage=start',$msg,
596: $env{'environment.remotenavmap'});
597: return OK;
598: }
599: }
600: }
601: # Are we allowed to look at the first resource?
602: if (($furl !~ m|^/adm/|) ||
603: (($env{'environment.remotenavmap'} eq 'on') &&
604: ($furl =~ m{^/adm/navmaps}))) {
605: # Guess not ...
606: $furl=&Apache::lonpageflip::first_accessible_resource();
607: }
608: $msg = &mt('Entering [_1] ...',
609: $env{'course.'.$courseid.'.description'});
610: &redirect_user($r,&mt('Entering [_1]',
611: $env{'course.'.$courseid.'.description'}),
612: $furl,$msg,
613: $env{'environment.remotenavmap'});
614: }
615: return OK;
616: }
617: }
618: #
619: # Send the user to the construction space they selected
620: if ($role =~ /^(au|ca|aa)$/) {
621: my $redirect_url = '/priv/';
622: if ($role eq 'au') {
623: $redirect_url.=$env{'user.name'};
624: } else {
625: $where =~ /\/(.*)$/;
626: $redirect_url .= $1;
627: }
628: $redirect_url .= '/';
629: &redirect_user($r,&mt('Entering Construction Space'),
630: $redirect_url);
631: return OK;
632: }
633: if ($role eq 'dc') {
634: my $redirect_url = '/adm/menu/';
635: &redirect_user($r,&mt('Loading Domain Coordinator Menu'),
636: $redirect_url);
637: return OK;
638: }
639: if ($role eq 'sc') {
640: my $redirect_url = '/adm/grades?command=scantronupload';
641: &redirect_user($r,&mt('Loading Data Upload Page'),
642: $redirect_url);
643: return OK;
644: }
645: }
646: }
647: }
648: }
649:
650:
651: # =============================================================== No Roles Init
652:
653: &Apache::loncommon::content_type($r,'text/html');
654: &Apache::loncommon::no_cache($r);
655: $r->send_http_header;
656: return OK if $r->header_only;
657:
658: my $crumbtext = 'User Roles';
659: my $pagetitle = 'My Roles';
660: my $recent = &mt('Recent Roles');
661: my $show_course=&Apache::loncommon::show_course();
662: if ($show_course) {
663: $crumbtext = 'Courses';
664: $pagetitle = 'My Courses';
665: $recent = &mt('Recent Courses');
666: }
667: my $brcrum =[{href=>"/adm/roles",text=>$crumbtext}];
668: my $swinfo=&Apache::lonmenu::rawconfig();
669: my $start_page=&Apache::loncommon::start_page($pagetitle,undef,{bread_crumbs=>$brcrum});
670: my $standby=&mt('Role selected. Please stand by.');
671: $standby=~s/\n/\\n/g;
672: 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 />';
673:
674: $r->print(<<ENDHEADER);
675: $start_page
676: <br />
677: <noscript>
678: $noscript
679: </noscript>
680: <script type="text/javascript">
681: // <![CDATA[
682: $swinfo
683: window.focus();
684:
685: active=true;
686:
687: function enterrole (thisform,rolecode,buttonname) {
688: if (active) {
689: active=false;
690: document.title='$standby';
691: window.status='$standby';
692: thisform.newrole.value=rolecode;
693: thisform.submit();
694: } else {
695: alert('$standby');
696: }
697: }
698:
699: function setToUpdate(thisform) {
700: thisform.doupdate.value='1';
701: thisform.selectrole.value='';
702: thisform.submit();
703: }
704:
705: // ]]>
706: </script>
707: ENDHEADER
708:
709: # ------------------------------------------ Get Error Message from Environment
710:
711: my ($fn,$priv,$nochoose,$error,$msg)=split(/:/,$env{'user.error.msg'});
712: if ($env{'user.error.msg'}) {
713: $r->log_reason(
714: "$msg for $env{'user.name'} domain $env{'user.domain'} access $priv",$fn);
715: }
716:
717: # ------------------------------------------------- Can this user re-init, etc?
718:
719: my $advanced=$env{'user.adv'};
720: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['tryagain']);
721: my $tryagain=$env{'form.tryagain'};
722: my $reinit=$env{'user.reinit'};
723: delete $env{'user.reinit'};
724:
725: # -------------------------------------------------------- Generate Page Output
726: # --------------------------------------------------------------- Error Header?
727: if ($error) {
728: $r->print("<h1>".&mt('LON-CAPA Access Control')."</h1>");
729: $r->print("<!-- LONCAPAACCESSCONTROLERRORSCREEN --><hr /><pre>");
730: if ($priv ne '') {
731: $r->print(&mt('Access : ').&Apache::lonnet::plaintext($priv)."\n");
732: }
733: if ($fn ne '') {
734: $r->print(&mt('Resource: ').&Apache::lonenc::check_encrypt($fn)."\n");
735: }
736: if ($msg ne '') {
737: $r->print(&mt('Action : ').$msg."\n");
738: }
739: $r->print("</pre><hr />");
740: my $url=$fn;
741: my $last;
742: if (tie(my %hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
743: &GDBM_READER(),0640)) {
744: $last=$hash{'last_known'};
745: untie(%hash);
746: }
747: if ($last) { $fn.='?symb='.&escape($last); }
748:
749: &Apache::londocs::changewarning($r,undef,'You have modified your course recently, [_1] may fix this access problem.',
750: &Apache::lonenc::check_encrypt($fn));
751: } else {
752: if ($env{'user.error.msg'}) {
753: if ($reinit) {
754: $r->print(
755: '<h3><span class="LC_error">'.
756: &mt('As your session file for the course or community has expired, you will need to re-select it.').'</span></h3>');
757: } else {
758: $r->print(
759: '<h3><span class="LC_error">'.
760: &mt('You need to choose another user role or enter a specific course or community for this function.').
761: '</span></h3>');
762: }
763: }
764: }
765: # -------------------------------------------------------- Choice or no choice?
766: if ($nochoose) {
767: $r->print("<h2>".&mt('Sorry ...')."</h2>\n<span class='LC_error'>".
768: &mt('This action is currently not authorized.').'</span>'.
769: &Apache::loncommon::end_page());
770: return OK;
771: } else {
772: $r->print($updateresult);
773: if (($ENV{'REDIRECT_QUERY_STRING'}) && ($fn)) {
774: $fn.='?'.$ENV{'REDIRECT_QUERY_STRING'};
775: }
776: $r->print('<form method="post" name="rolechoice" action="'.(($fn)?$fn:$r->uri).'">');
777: $r->print('<input type="hidden" name="orgurl" value="'.$fn.'" />');
778: $r->print('<input type="hidden" name="selectrole" value="1" />');
779: $r->print('<input type="hidden" name="newrole" value="" />');
780: }
781: $r->rflush();
782:
783: my (%roletext,%sortrole,%roleclass,%futureroles,%timezones);
784: my ($countactive,$countfuture,$inrole,$possiblerole) =
785: &gather_roles($update,$refresh,$now,$reinit,$nochoose,\%roletext,\%sortrole,\%roleclass,
786: \%futureroles,\%timezones,$loncaparev);
787: $refresh = $now;
788: &Apache::lonnet::appenv({'user.refresh.time' => $refresh});
789: my $updatebutton = &mt('Check for role changes');
790: my $show_course=&Apache::loncommon::show_course();
791: if ($show_course) {
792: $updatebutton = &mt('Check for new courses');
793: }
794: my $do_update;
795: unless (($env{'form.source'} eq 'login') || ($env{'form.doupdate'})) {
796: $do_update = '<input type="hidden" name="doupdate" value="" />'.
797: '<input type="button" name="update" value="'.
798: $updatebutton.'" onclick="javascript:setToUpdate(this.form)" />';
799: }
800: if ($env{'user.adv'}) {
801: my $showall = '<label><input type="checkbox" name="showall"';
802: if ($env{'form.showall'}) {
803: $showall .= ' checked="checked" ';
804: }
805: $showall .= ' />'.&mt('Show all roles').'</label> '.
806: '<input type="submit" value="'.&mt('Update display').'" />';
807: if ($do_update) {
808: $r->print('<div class="LC_left_float"><fieldset>'.
809: '<legend>'. &mt('Display').'</legend>'.
810: $showall.'</fieldset></div>'.
811: '<div class="LC_left_float"><fieldset><legend>'.
812: &mt('Changes?').'</legend>'.
813: $do_update.'</fieldset></div><br clear="all" />');
814: } else {
815: $r->print($showall);
816: }
817: } else {
818: $r->print('<p>'.$do_update.'</p>');
819: if ($countactive > 0) {
820: $r->print(&Apache::loncoursequeueadmin::queued_selfenrollment());
821: my $domdesc = &Apache::lonnet::domain($env{'user.domain'},'description');
822: my $esc_dom = &HTML::Entities::encode($env{'user.domain'},'"<>&');
823: $r->print(
824: '<p>'
825: .&mt('[_1]Visit the [_2]Course/Community Catalog[_3]'
826: .' to view all [_4] LON-CAPA courses and communities.'
827: ,'<b>'
828: ,'<a href="/adm/coursecatalog?showdom='.$esc_dom.'">'
829: ,'</a></b>',$domdesc)
830: .'<br />'
831: .&mt('If a course or community is [_1]not[_2] in your list of current courses and communities below,'
832: .' you may be able to enroll if self-enrollment is permitted.'
833: ,'<b>','</b>')
834: .'</p>'
835: );
836: }
837: }
838:
839: # No active roles
840: if ($countactive==0) {
841: if ($inrole) {
842: $r->print('<h2>'.&mt('Currently no additional roles, courses or communities').'</h2>');
843: } else {
844: $r->print('<h2>'.&mt('Currently no active roles, courses or communities').'</h2>');
845: }
846: &findcourse_advice($r);
847: &requestcourse_advice($r);
848: $r->print('</form>');
849: if ($countfuture) {
850: $r->print(&mt('The following [quant,_1,role,roles] will become active in the future:',$countfuture));
851: my $doheaders = &roletable_headers($r,\%roleclass,\%sortrole,
852: $nochoose);
853: &print_rolerows($r,$doheaders,\%roleclass,\%sortrole,\%dcroles,
854: \%roletext);
855: my $tremark='';
856: my $tbg;
857: if ($env{'request.role'} eq 'cm') {
858: $tbg="LC_roles_selected";
859: $tremark=&mt('Currently selected.').' ';
860: } else {
861: $tbg="LC_roles_is";
862: }
863: $r->print(&Apache::loncommon::start_data_table_row()
864: .'<td class="'.$tbg.'"> </td>'
865: .'<td colspan="3">'
866: .&mt('No role specified')
867: .'</td>'
868: .'<td>'.$tremark.' </td>'
869: .&Apache::loncommon::end_data_table_row()
870: );
871:
872: $r->print(&Apache::loncommon::end_data_table());
873: }
874: $r->print(&Apache::loncommon::end_page());
875: return OK;
876: }
877: # ----------------------------------------------------------------------- Table
878:
879: if ($numdc > 0) {
880: $r->print(&coursepick_jscript());
881: $r->print(&Apache::loncommon::coursebrowser_javascript().
882: &Apache::loncommon::authorbrowser_javascript());
883: }
884:
885: unless ((!&Apache::loncommon::show_course()) || ($nochoose) || ($countactive==1)) {
886: $r->print("<h2>".&mt('Select a Course to Enter')."</h2>\n");
887: }
888: if ($env{'form.destinationurl'}) {
889: $r->print('<input type="hidden" name="destinationurl" value="'.
890: $env{'form.destinationurl'}.'" />');
891: if ($env{'form.destsymb'} ne '') {
892: $r->print('<input type="hidden" name="destsymb" value="'.
893: $env{'form.destsymb'}.'" />');
894: }
895: }
896:
897: my $doheaders = &roletable_headers($r,\%roleclass,\%sortrole,$nochoose);
898: if ($env{'environment.recentroles'}) {
899: my %recent_roles =
900: &Apache::lonhtmlcommon::get_recent('roles',$env{'environment.recentrolesn'});
901: my $output='';
902: foreach my $role (sort(keys(%recent_roles))) {
903: if (ref($roletext{'user.role.'.$role}) eq 'ARRAY') {
904: $output.= &Apache::loncommon::start_data_table_row().
905: $roletext{'user.role.'.$role}->[0].
906: &Apache::loncommon::end_data_table_row();
907: if ($roletext{'user.role.'.$role}->[1] ne '') {
908: $output .= &Apache::loncommon::continue_data_table_row().
909: $roletext{'user.role.'.$role}->[1].
910: &Apache::loncommon::end_data_table_row();
911: }
912: if ($role =~ m{dc\./($match_domain)/}
913: && $dcroles{$1}) {
914: $output .= &adhoc_roles_row($1,'recent');
915: }
916: } elsif ($numdc > 0) {
917: unless ($role =~/^error\:/) {
918: my ($roletext,$role_text_end) = &display_cc_role('user.role.'.$role);
919: if ($roletext) {
920: $output.= &Apache::loncommon::start_data_table_row().
921: $roletext.
922: &Apache::loncommon::end_data_table_row();
923: if ($role_text_end) {
924: $output .= &Apache::loncommon::continue_data_table_row().
925: $role_text_end.
926: &Apache::loncommon::end_data_table_row();
927: }
928: }
929: }
930: }
931: }
932: if ($output) {
933: $r->print(&Apache::loncommon::start_data_table_empty_row()
934: .'<td align="center" colspan="5">'
935: .$recent
936: .'</td>'
937: .&Apache::loncommon::end_data_table_empty_row()
938: );
939: $r->print($output);
940: $doheaders ++;
941: }
942: }
943: &print_rolerows($r,$doheaders,\%roleclass,\%sortrole,\%dcroles,\%roletext);
944: if ($countactive > 1) {
945: my $tremark='';
946: my $tbg;
947: if ($env{'request.role'} eq 'cm') {
948: $tbg="LC_roles_selected";
949: $tremark=&mt('Currently selected.').' ';
950: } else {
951: $tbg="LC_roles_is";
952: }
953: $r->print(&Apache::loncommon::start_data_table_row());
954: unless ($nochoose) {
955: if ($env{'request.role'} ne 'cm') {
956: $r->print('<td class="'.$tbg.'"><input type="submit" value="'.
957: &mt('Select').'" name="cm" /></td>');
958: } else {
959: $r->print('<td class="'.$tbg.'"> </td>');
960: }
961: }
962: $r->print('<td colspan="3">'
963: .&mt('No role specified')
964: .'</td>'
965: .'<td>'.$tremark.' </td>'
966: .&Apache::loncommon::end_data_table_row()
967: );
968: }
969: $r->print(&Apache::loncommon::end_data_table());
970: unless ($nochoose) {
971: $r->print("</form>\n");
972: }
973: # ------------------------------------------------------------ Privileges Info
974: if (($advanced) && (($env{'user.error.msg'}) || ($error))) {
975: $r->print('<hr /><h2>'.&mt('Current Privileges').'</h2>');
976: $r->print(&privileges_info());
977: }
978: $r->print(&Apache::lonnet::getannounce());
979: if ($advanced) {
980: my $esc_dom = &HTML::Entities::encode($env{'user.domain'},'"<>&');
981: $r->print('<p><small><i>'
982: .&mt('This LON-CAPA server is version [_1]',$r->dir_config('lonVersion'))
983: .'</i><br />'
984: .'<a href="/adm/logout">'.&mt('Logout').'</a> '
985: .'<a href="/adm/coursecatalog?showdom='.$esc_dom.'">'
986: .&mt('Course/Community Catalog')
987: .'</a></small></p>');
988: }
989: $r->print(&Apache::loncommon::end_page());
990: return OK;
991: }
992:
993: sub gather_roles {
994: my ($update,$refresh,$now,$reinit,$nochoose,$roletext,$sortrole,$roleclass,$futureroles,$timezones,$loncaparev) = @_;
995: my ($countactive,$countfuture,$inrole,$possiblerole) = (0,0,0,'');
996: my $advanced = $env{'user.adv'};
997: my $tryagain = $env{'form.tryagain'};
998: my @ids = &Apache::lonnet::current_machine_ids();
999: foreach my $envkey (sort(keys(%env))) {
1000: my $button = 1;
1001: my $switchserver='';
1002: my $switchwarning;
1003: my ($role_text,$role_text_end,$sortkey);
1004: if ($envkey=~/^user\.role\./) {
1005: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend);
1006: &Apache::lonnet::role_status($envkey,$update,$refresh,$now,\$role,\$where,
1007: \$trolecode,\$tstatus,\$tstart,\$tend);
1008: next if (!defined($role) || $role eq '' || $role =~ /^gr/);
1009: $tremark='';
1010: $tpstart=' ';
1011: $tpend=' ';
1012: if ($env{'request.role'} eq $trolecode) {
1013: $tstatus='selected';
1014: }
1015: my $tbg;
1016: if (($tstatus eq 'is')
1017: || ($tstatus eq 'selected')
1018: || ($tstatus eq 'future')
1019: || ($env{'form.showall'})) {
1020: my $timezone = &role_timezone($where,$timezones);
1021: if ($tstart) {
1022: $tpstart=&Apache::lonlocal::locallocaltime($tstart,$timezone);
1023: }
1024: if ($tend) {
1025: $tpend=&Apache::lonlocal::locallocaltime($tend,$timezone);
1026: }
1027: if ($tstatus eq 'is') {
1028: $tbg='LC_roles_is';
1029: $possiblerole=$trolecode;
1030: $countactive++;
1031: } elsif ($tstatus eq 'future') {
1032: $tbg='LC_roles_future';
1033: $button=0;
1034: $futureroles->{$trolecode} = $tstart.':'.$tend;
1035: $countfuture ++;
1036: } elsif ($tstatus eq 'expired') {
1037: $tbg='LC_roles_expired';
1038: $button=0;
1039: } elsif ($tstatus eq 'will_not') {
1040: $tbg='LC_roles_will_not';
1041: $tremark.=&mt('Expired after logout.').' ';
1042: } elsif ($tstatus eq 'selected') {
1043: $tbg='LC_roles_selected';
1044: $inrole=1;
1045: $countactive++;
1046: $tremark.=&mt('Currently selected.').' ';
1047: }
1048: my $trole;
1049: if ($role =~ /^cr\//) {
1050: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$role);
1051: if ($tremark) { $tremark.='<br />'; }
1052: $tremark.=&mt('Customrole defined by [_1].',$rauthor.':'.$rdomain);
1053: }
1054: $trole=Apache::lonnet::plaintext($role);
1055: my $ttype;
1056: my $twhere;
1057: my ($tdom,$trest,$tsection)=
1058: split(/\//,Apache::lonnet::declutter($where));
1059: # First, Co-Authorship roles
1060: if (($role eq 'ca') || ($role eq 'aa')) {
1061: my $home = &Apache::lonnet::homeserver($trest,$tdom);
1062: my $allowed=0;
1063: foreach my $id (@ids) { if ($id eq $home) { $allowed=1; } }
1064: if (!$allowed) {
1065: $button=0;
1066: $switchserver='otherserver='.$home.'&role='.$trolecode;
1067: }
1068: #next if ($home eq 'no_host');
1069: $home = &Apache::lonnet::hostname($home);
1070: $ttype='Construction Space';
1071: $twhere=&mt('User').': '.$trest.'<br />'.&mt('Domain').
1072: ': '.$tdom.'<br />'.
1073: ' '.&mt('Server').': '.$home;
1074: $env{'course.'.$tdom.'_'.$trest.'.description'}='ca';
1075: $tremark.=&Apache::lonhtmlcommon::authorbombs('/res/'.$tdom.'/'.$trest.'/');
1076: $sortkey=$role."$trest:$tdom";
1077: } elsif ($role eq 'au') {
1078: # Authors
1079: my $home = &Apache::lonnet::homeserver
1080: ($env{'user.name'},$env{'user.domain'});
1081: my $allowed=0;
1082: foreach my $id (@ids) { if ($id eq $home) { $allowed=1; } }
1083: if (!$allowed) {
1084: $button=0;
1085: $switchserver='otherserver='.$home.'&role='.$trolecode;
1086: }
1087: #next if ($home eq 'no_host');
1088: $home = &Apache::lonnet::hostname($home);
1089: $ttype='Construction Space';
1090: $twhere=&mt('Domain').': '.$tdom.'<br />'.&mt('Server').
1091: ': '.$home;
1092: $env{'course.'.$tdom.'_'.$trest.'.description'}='ca';
1093: $tremark.=&Apache::lonhtmlcommon::authorbombs('/res/'.$tdom.'/'.$env{'user.name'}.'/');
1094: $sortkey=$role;
1095: } elsif ($trest) {
1096: my $tcourseid=$tdom.'_'.$trest;
1097: $ttype = &Apache::loncommon::course_type($tcourseid);
1098: $trole = &Apache::lonnet::plaintext($role,$ttype,$tcourseid);
1099: if ($env{'course.'.$tcourseid.'.description'}) {
1100: my $home=$env{'course.'.$tcourseid.'.home'};
1101: $twhere=$env{'course.'.$tcourseid.'.description'};
1102: $sortkey=$role."\0".$tdom."\0".$twhere."\0".$envkey;
1103: $twhere = &HTML::Entities::encode($twhere,'"<>&');
1104: unless ($twhere eq &mt('Currently not available')) {
1105: $twhere.=' <span class="LC_fontsize_small">'.
1106: &Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$trest,$tdom).
1107: '</span>';
1108: unless ($home && grep(/^\Q$home\E$/,@ids) && $loncaparev eq '') {
1109: my $required = $env{'course.'.$tcourseid.'.internal.releaserequired'};
1110: if ($required ne '') {
1111: ($switchserver,$switchwarning) =
1112: &check_release_required($loncaparev,$tcourseid,$trolecode,$required);
1113: if ($switchserver || $switchwarning) {
1114: $button = 0;
1115: }
1116: }
1117: }
1118: }
1119: } else {
1120: my %newhash=&Apache::lonnet::coursedescription($tcourseid);
1121: if (%newhash) {
1122: $sortkey=$role."\0".$tdom."\0".$newhash{'description'}.
1123: "\0".$envkey;
1124: $twhere=&HTML::Entities::encode($newhash{'description'},'"<>&').
1125: ' <span class="LC_fontsize_small">'.
1126: &Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$trest,$tdom).
1127: '</span>';
1128: $ttype = $newhash{'type'};
1129: $trole = &Apache::lonnet::plaintext($role,$ttype,$tcourseid);
1130: my $home = $newhash{'home'};
1131: unless ($home && grep(/^\Q$home\E$/,@ids) && $loncaparev eq '') {
1132: my $required = $newhash{'internal.releaserequired'};
1133: if ($required ne '') {
1134: ($switchserver,$switchwarning) =
1135: &check_release_required($loncaparev,$tcourseid,$trolecode,$required);
1136: if ($switchserver || $switchwarning) {
1137: $button = 0;
1138: }
1139: }
1140: }
1141: } else {
1142: $twhere=&mt('Currently not available');
1143: $env{'course.'.$tcourseid.'.description'}=$twhere;
1144: $sortkey=$role."\0".$tdom."\0".$twhere."\0".$envkey;
1145: $ttype = 'Unavailable';
1146: }
1147: }
1148: if ($tsection) {
1149: $twhere.='<br />'.&mt('Section').': '.$tsection;
1150: }
1151: if ($role ne 'st') { $twhere.="<br />".&mt('Domain').":".$tdom; }
1152: } elsif ($tdom) {
1153: $ttype='Domain';
1154: $twhere=$tdom;
1155: $sortkey=$role.$twhere;
1156: } else {
1157: $ttype='System';
1158: $twhere=&mt('system wide');
1159: $sortkey=$role.$twhere;
1160: }
1161: ($role_text,$role_text_end) =
1162: &build_roletext($trolecode,$tdom,$trest,$tstatus,$tryagain,
1163: $advanced,$tremark,$tbg,$trole,$twhere,$tpstart,
1164: $tpend,$nochoose,$button,$switchserver,$reinit,$switchwarning);
1165: $roletext->{$envkey}=[$role_text,$role_text_end];
1166: if (!$sortkey) {$sortkey=$twhere."\0".$envkey;}
1167: $sortrole->{$sortkey}=$envkey;
1168: $roleclass->{$envkey}=$ttype;
1169: }
1170: }
1171: }
1172: return ($countactive,$countfuture,$inrole,$possiblerole);
1173: }
1174:
1175: sub role_timezone {
1176: my ($where,$timezones) = @_;
1177: my $timezone;
1178: if (ref($timezones) eq 'HASH') {
1179: if ($where =~ m{^/($match_domain)/($match_courseid)}) {
1180: my $cdom = $1;
1181: my $cnum = $2;
1182: if ($cdom && $cnum) {
1183: if (!exists($timezones->{$cdom.'_'.$cnum})) {
1184: my $tz;
1185: if ($env{'course.'.$cdom.'_'.$cnum.'.description'}) {
1186: $tz = $env{'course.'.$cdom.'_'.$cnum.'.timezone'};
1187: } else {
1188: my %timehash =
1189: &Apache::lonnet::get('environment',['timezone'],$cdom,$cnum);
1190: $tz = $timehash{'timezone'};
1191: }
1192: if ($tz eq '') {
1193: if (!exists($timezones->{$cdom})) {
1194: my %domdefaults =
1195: &Apache::lonnet::get_domain_defaults($cdom);
1196: if ($domdefaults{'timezone_def'} eq '') {
1197: $timezones->{$cdom} = 'local';
1198: } else {
1199: $timezones->{$cdom} = $domdefaults{'timezone_def'};
1200: }
1201: }
1202: $timezones->{$cdom.'_'.$cnum} = $timezones->{$cdom};
1203: } else {
1204: $timezones->{$cdom.'_'.$cnum} =
1205: &Apache::lonlocal::gettimezone($tz);
1206: }
1207: }
1208: $timezone = $timezones->{$cdom.'_'.$cnum};
1209: }
1210: } else {
1211: my ($tdom) = ($where =~ m{^/($match_domain)});
1212: if ($tdom) {
1213: if (!exists($timezones->{$tdom})) {
1214: my %domdefaults = &Apache::lonnet::get_domain_defaults($tdom);
1215: if ($domdefaults{'timezone_def'} eq '') {
1216: $timezones->{$tdom} = 'local';
1217: } else {
1218: $timezones->{$tdom} = $domdefaults{'timezone_def'};
1219: }
1220: }
1221: $timezone = $timezones->{$tdom};
1222: }
1223: }
1224: if ($timezone eq 'local') {
1225: $timezone = undef;
1226: }
1227: }
1228: return $timezone;
1229: }
1230:
1231: sub roletable_headers {
1232: my ($r,$roleclass,$sortrole,$nochoose) = @_;
1233: my $doheaders;
1234: if ((ref($sortrole) eq 'HASH') && (ref($roleclass) eq 'HASH')) {
1235: $r->print('<br />'
1236: .&Apache::loncommon::start_data_table()
1237: .&Apache::loncommon::start_data_table_header_row()
1238: );
1239: if (!$nochoose) { $r->print('<th> </th>'); }
1240: $r->print('<th>'.&mt('User Role').'</th>'
1241: .'<th>'.&mt('Extent').'</th>'
1242: .'<th>'.&mt('Start').'</th>'
1243: .'<th>'.&mt('End').'</th>'
1244: .&Apache::loncommon::end_data_table_header_row()
1245: );
1246: $doheaders=-1;
1247: my @roletypes = &roletypes();
1248: foreach my $type (@roletypes) {
1249: my $haverole=0;
1250: foreach my $which (sort {uc($a) cmp uc($b)} (keys(%{$sortrole}))) {
1251: if ($roleclass->{$sortrole->{$which}} =~ /^\Q$type\E/) {
1252: $haverole=1;
1253: }
1254: }
1255: if ($haverole) { $doheaders++; }
1256: }
1257: }
1258: return $doheaders;
1259: }
1260:
1261: sub roletypes {
1262: my @types = ('Domain','Construction Space','Course','Community','Unavailable','System');
1263: return @types;
1264: }
1265:
1266: sub print_rolerows {
1267: my ($r,$doheaders,$roleclass,$sortrole,$dcroles,$roletext) = @_;
1268: if ((ref($roleclass) eq 'HASH') && (ref($sortrole) eq 'HASH')) {
1269: my @types = &roletypes();
1270: foreach my $type (@types) {
1271: my $output;
1272: foreach my $which (sort {uc($a) cmp uc($b)} (keys(%{$sortrole}))) {
1273: if ($roleclass->{$sortrole->{$which}} =~ /^\Q$type\E/) {
1274: if (ref($roletext) eq 'HASH') {
1275: if (ref($roletext->{$sortrole->{$which}}) eq 'ARRAY') {
1276: $output.= &Apache::loncommon::start_data_table_row().
1277: $roletext->{$sortrole->{$which}}->[0].
1278: &Apache::loncommon::end_data_table_row();
1279: if ($roletext->{$sortrole->{$which}}->[1] ne '') {
1280: $output .= &Apache::loncommon::continue_data_table_row().
1281: $roletext->{$sortrole->{$which}}->[1].
1282: &Apache::loncommon::end_data_table_row();
1283: }
1284: }
1285: if ($sortrole->{$which} =~ m-dc\./($match_domain)/-) {
1286: if (ref($dcroles) eq 'HASH') {
1287: if ($dcroles->{$1}) {
1288: $output .= &adhoc_roles_row($1,'');
1289: }
1290: }
1291: }
1292: }
1293: }
1294: }
1295: if ($output) {
1296: if ($doheaders > 0) {
1297: $r->print(&Apache::loncommon::start_data_table_empty_row()
1298: .'<td align="center" colspan="5">'
1299: .&mt($type)
1300: .'</td>'
1301: .&Apache::loncommon::end_data_table_empty_row()
1302: );
1303: }
1304: $r->print($output);
1305: }
1306: }
1307: }
1308: }
1309:
1310: sub findcourse_advice {
1311: my ($r) = @_;
1312: my $domdesc = &Apache::lonnet::domain($env{'user.domain'},'description');
1313: my $esc_dom = &HTML::Entities::encode($env{'user.domain'},'"<>&');
1314: if (&Apache::lonnet::auto_run(undef,$env{'user.domain'})) {
1315: $r->print(&mt('If you were expecting to see an active role listed for a particular course in the [_1] domain, it may be missing for one of the following reasons:',$domdesc).'
1316: <ul>
1317: <li>'.&mt('The course has yet to be created.').'</li>
1318: <li>'.&mt('Automatic enrollment of registered students has not been enabled for the course.').'</li>
1319: <li>'.&mt('You are in a section of course for which automatic enrollment in the corresponding LON-CAPA course is not active.').'</li>
1320: <li>'.&mt('The start date for automated enrollment has yet to be reached.').'</li>
1321: <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>
1322: </ul>');
1323: } else {
1324: $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 />');
1325: }
1326: $r->print('<h3>'.&mt('Self-Enrollment').'</h3>'.
1327: '<p>'.&mt('The [_1]Course/Community Catalog[_2] provides information about all [_3] classes for which LON-CAPA courses have been created, as well as any communities in the domain.','<a href="/adm/coursecatalog?showdom='.$esc_dom.'">','</a>',$domdesc).'<br />');
1328: $r->print(&mt('You can search for courses and communities which permit self-enrollment, if you would like to enroll in one.').'</p>'.
1329: &Apache::loncoursequeueadmin::queued_selfenrollment());
1330: return;
1331: }
1332:
1333: sub requestcourse_advice {
1334: my ($r) = @_;
1335: my $domdesc = &Apache::lonnet::domain($env{'user.domain'},'description');
1336: my $esc_dom = &HTML::Entities::encode($env{'user.domain'},'"<>&');
1337: my (%can_request,%request_doms);
1338: &Apache::lonnet::check_can_request($env{'user.domain'},\%can_request,\%request_doms);
1339: if (keys(%request_doms) > 0) {
1340: my ($types,$typename) = &Apache::loncommon::course_types();
1341: if ((ref($types) eq 'ARRAY') && (ref($typename) eq 'HASH')) {
1342: $r->print('<h3>'.&mt('Request creation of a course or community').'</h3>'.
1343: '<p>'.&mt('You have rights to request the creation of courses and/or communities in the following domain(s):').'<ul>');
1344: my (@reqdoms,@reqtypes);
1345: foreach my $type (sort(keys(%request_doms))) {
1346: push(@reqtypes,$type);
1347: if (ref($request_doms{$type}) eq 'ARRAY') {
1348: my $domstr = join(', ',map { &Apache::lonnet::domain($_) } sort(@{$request_doms{$type}}));
1349: $r->print(
1350: '<li>'
1351: .&mt('[_1]'.$typename->{$type}.'[_2] in domain: [_3]',
1352: '<i>',
1353: '</i>',
1354: '<b>'.$domstr.'</b>')
1355: .'</li>'
1356: );
1357: foreach my $dom (@{$request_doms{$type}}) {
1358: unless (grep(/^\Q$dom\E/,@reqdoms)) {
1359: push(@reqdoms,$dom);
1360: }
1361: }
1362: }
1363: }
1364: my @showtypes;
1365: foreach my $type (@{$types}) {
1366: if (grep(/^\Q$type\E$/,@reqtypes)) {
1367: push(@showtypes,$type);
1368: }
1369: }
1370: my $requrl = '/adm/requestcourse';
1371: if (@reqdoms == 1) {
1372: $requrl .= '?showdom='.$reqdoms[0];
1373: }
1374: if (@showtypes > 0) {
1375: $requrl.=(($requrl=~/\?/)?'&':'?').'crstype='.$showtypes[0];
1376: }
1377: if (@reqdoms == 1 || @showtypes > 0) {
1378: $requrl .= '&state=crstype&action=new';
1379: }
1380: $r->print('</ul>'.&mt('Use the [_1]request form[_2] to submit a request for creation of a new course or community.','<a href="'.$requrl.'">','</a>').'</p>');
1381: }
1382: }
1383: return;
1384: }
1385:
1386: sub privileges_info {
1387: my ($which) = @_;
1388: my $output;
1389:
1390: $which ||= $env{'request.role'};
1391:
1392: foreach my $envkey (sort(keys(%env))) {
1393: next if ($envkey!~/^user\.priv\.\Q$which\E\.(.*)/);
1394:
1395: my $where=$1;
1396: my $ttype;
1397: my $twhere;
1398: my (undef,$tdom,$trest,$tsec)=split(m{/},$where);
1399: if ($trest) {
1400: if ($env{'course.'.$tdom.'_'.$trest.'.description'} eq 'ca') {
1401: $ttype='Construction Space';
1402: $twhere='User: '.$trest.', Domain: '.$tdom;
1403: } else {
1404: $ttype= &Apache::loncommon::course_type($tdom.'_'.$trest);
1405: $twhere=$env{'course.'.$tdom.'_'.$trest.'.description'};
1406: if ($tsec) {
1407: my $sec_type = 'Section';
1408: if (exists($env{"user.role.gr.$where"})) {
1409: $sec_type = 'Group';
1410: }
1411: $twhere.=' ('.$sec_type.': '.$tsec.')';
1412: }
1413: }
1414: } elsif ($tdom) {
1415: $ttype='Domain';
1416: $twhere=$tdom;
1417: } else {
1418: $ttype='System';
1419: $twhere='/';
1420: }
1421: $output .= "\n<h3>".&mt($ttype).': '.$twhere.'</h3>'."\n<ul>";
1422: foreach my $priv (sort(split(/:/,$env{$envkey}))) {
1423: next if (!$priv);
1424:
1425: my ($prv,$restr)=split(/\&/,$priv);
1426: my $trestr='';
1427: if ($restr ne 'F') {
1428: $trestr.=' ('.
1429: join(', ',
1430: map { &Apache::lonnet::plaintext($_) }
1431: (split('',$restr))).') ';
1432: }
1433: $output .= "\n\t".
1434: '<li>'.&Apache::lonnet::plaintext($prv).$trestr.'</li>';
1435: }
1436: $output .= "\n".'</ul>';
1437: }
1438: return $output;
1439: }
1440:
1441: sub build_roletext {
1442: my ($trolecode,$tdom,$trest,$tstatus,$tryagain,$advanced,$tremark,$tbg,$trole,$twhere,$tpstart,$tpend,$nochoose,$button,$switchserver,$reinit,$switchwarning) = @_;
1443: my ($roletext,$roletext_end);
1444: my $is_dc=($trolecode =~ m/^dc\./);
1445: my $rowspan=($is_dc) ? ''
1446: : ' rowspan="2" ';
1447:
1448: unless ($nochoose) {
1449: my $buttonname=$trolecode;
1450: $buttonname=~s/\W//g;
1451: if (!$button) {
1452: if ($switchserver) {
1453: $roletext.='<td'.$rowspan.' class="'.$tbg.'">'
1454: .'<a href="/adm/switchserver?'.$switchserver.'">'
1455: .&mt('Switch Server')
1456: .'</a></td>';
1457: } else {
1458: $roletext.=('<td'.$rowspan.' class="'.$tbg.'"> </td>');
1459: }
1460: if ($switchwarning) {
1461: if ($tremark eq '') {
1462: $tremark = $switchwarning;
1463: } else {
1464: $tremark .= '<br />'.$switchwarning;
1465: }
1466: }
1467: } elsif ($tstatus eq 'is') {
1468: $roletext.='<td'.$rowspan.' class="'.$tbg.'">'.
1469: '<input name="'.$buttonname.'" type="button" value="'.
1470: &mt('Select').'" onclick="javascript:enterrole(this.form,\''.
1471: $trolecode."','".$buttonname.'\');" /></td>';
1472: } elsif ($tryagain) {
1473: $roletext.=
1474: '<td'.$rowspan.' class="'.$tbg.'">'.
1475: '<input name="'.$buttonname.'" type="button" value="'.
1476: &mt('Try Selecting Again').'" onclick="javascript:enterrole(this.form,\''.
1477: $trolecode."','".$buttonname.'\');" /></td>';
1478: } elsif ($advanced) {
1479: $roletext.=
1480: '<td'.$rowspan.' class="'.$tbg.'">'.
1481: '<input name="'.$buttonname.'" type="button" value="'.
1482: &mt('Re-Initialize').'" onclick="javascript:enterrole(this.form,\''.
1483: $trolecode."','".$buttonname.'\');" /></td>';
1484: } elsif ($reinit) {
1485: $roletext.=
1486: '<td'.$rowspan.' class="'.$tbg.'">'.
1487: '<input name="'.$buttonname.'" type="button" value="'.
1488: &mt('Re-Select').'" onclick="javascript:enterrole(this.form,\''.
1489: $trolecode."','".$buttonname.'\');" /></td>';
1490: } else {
1491: $roletext.=
1492: '<td'.$rowspan.' class="'.$tbg.'">'.
1493: '<input name="'.$buttonname.'" type="button" value="'.
1494: &mt('Re-Select').'" onclick="javascript:enterrole(this.form,\''.
1495: $trolecode."','".$buttonname.'\');" /></td>';
1496: }
1497: }
1498: if ($trolecode !~ m/^(dc|ca|au|aa)\./) {
1499: $tremark.=&Apache::lonannounce::showday(time,1,
1500: &Apache::lonannounce::readcalendar($tdom.'_'.$trest));
1501: }
1502: $roletext.='<td>'.$trole.'</td>'
1503: .'<td>'.$twhere.'</td>'
1504: .'<td>'.$tpstart.'</td>'
1505: .'<td>'.$tpend.'</td>';
1506: if (!$is_dc) {
1507: $roletext_end = '<td colspan="4">'.
1508: $tremark.' '.
1509: '</td>';
1510: }
1511: return ($roletext,$roletext_end);
1512: }
1513:
1514: sub check_needs_switchserver {
1515: my ($possiblerole) = @_;
1516: my $needs_switchserver;
1517: my ($role,$where) = split(/\./,$possiblerole,2);
1518: my (undef,$tdom,$twho) = split(/\//,$where);
1519: my ($server_status,$home);
1520: if (($role eq 'ca') || ($role eq 'aa')) {
1521: ($server_status,$home) = &check_author_homeserver($twho,$tdom);
1522: } else {
1523: ($server_status,$home) = &check_author_homeserver($env{'user.name'},
1524: $env{'user.domain'});
1525: }
1526: if ($server_status eq 'switchserver') {
1527: $needs_switchserver = 1;
1528: }
1529: return $needs_switchserver;
1530: }
1531:
1532: sub check_author_homeserver {
1533: my ($uname,$udom)=@_;
1534: if (($uname eq '') || ($udom eq '')) {
1535: return ('fail','');
1536: }
1537: my $home = &Apache::lonnet::homeserver($uname,$udom);
1538: if (&Apache::lonnet::host_domain($home) ne $udom) {
1539: return ('fail',$home);
1540: }
1541: my @ids=&Apache::lonnet::current_machine_ids();
1542: if (grep(/^\Q$home\E$/,@ids)) {
1543: return ('ok',$home);
1544: } else {
1545: return ('switchserver',$home);
1546: }
1547: }
1548:
1549: sub check_fordc {
1550: my ($dcroles,$update,$then) = @_;
1551: my $numdc = 0;
1552: if ($env{'user.adv'}) {
1553: foreach my $envkey (sort keys %env) {
1554: if ($envkey=~/^user\.role\.dc\.\/($match_domain)\/$/) {
1555: my $dcdom = $1;
1556: my $livedc = 1;
1557: my ($tstart,$tend)=split(/\./,$env{$envkey});
1558: my $limit = $update;
1559: if ($env{'request.role'} eq 'dc./'.$dcdom.'/') {
1560: $limit = $then;
1561: }
1562: if ($tstart && $tstart>$limit) { $livedc = 0; }
1563: if ($tend && $tend <$limit) { $livedc = 0; }
1564: if ($livedc) {
1565: $$dcroles{$dcdom} = $envkey;
1566: $numdc++;
1567: }
1568: }
1569: }
1570: }
1571: return $numdc;
1572: }
1573:
1574: sub adhoc_course_role {
1575: my ($refresh,$update,$then) = @_;
1576: my ($cdom,$cnum,$crstype);
1577: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
1578: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
1579: $crstype = &Apache::loncommon::course_type();
1580: if (&check_forcc($cdom,$cnum,$refresh,$update,$then,$crstype)) {
1581: my $setprivs;
1582: if (!defined($env{'user.role.'.$env{'form.switchrole'}})) {
1583: $setprivs = 1;
1584: } else {
1585: my ($start,$end) = split(/\./,$env{'user.role.'.$env{'form.switchrole'}});
1586: if (($start && ($start>$refresh || $start == -1)) ||
1587: ($end && $end<$update)) {
1588: $setprivs = 1;
1589: }
1590: }
1591: if ($setprivs) {
1592: if ($env{'form.switchrole'} =~ m-^(in|ta|ep|ad|st|cr)([\w/]*)\./\Q$cdom\E/\Q$cnum\E/?(\w*)$-) {
1593: my $role = $1;
1594: my $custom_role = $2;
1595: my $usec = $3;
1596: if ($role eq 'cr') {
1597: if ($custom_role =~ m-^/$match_domain/$match_username/\w+$-) {
1598: $role .= $custom_role;
1599: } else {
1600: return;
1601: }
1602: }
1603: my (%userroles,%newrole,%newgroups,%group_privs);
1604: my %cgroups =
1605: &Apache::lonnet::get_active_groups($env{'user.domain'},
1606: $env{'user.name'},$cdom,$cnum);
1607: foreach my $group (keys(%cgroups)) {
1608: $group_privs{$group} =
1609: $env{'user.priv.cc./'.$cdom.'/'.$cnum.'./'.$cdom.'/'.$cnum.'/'.$group};
1610: }
1611: $newgroups{'/'.$cdom.'/'.$cnum} = \%group_privs;
1612: my $area = '/'.$cdom.'/'.$cnum;
1613: my $spec = $role.'.'.$area;
1614: if ($usec ne '') {
1615: $spec .= '/'.$usec;
1616: $area .= '/'.$usec;
1617: }
1618: &Apache::lonnet::standard_roleprivs(\%newrole,$role,$cdom,$spec,$cnum,$area);
1619: &Apache::lonnet::set_userprivs(\%userroles,\%newrole,\%newgroups);
1620: my $adhocstart = $refresh-1;
1621: $userroles{'user.role.'.$spec} = $adhocstart.'.';
1622: &Apache::lonnet::appenv(\%userroles,[$role,'cm']);
1623: }
1624: }
1625: }
1626: return;
1627: }
1628:
1629: sub check_forcc {
1630: my ($cdom,$cnum,$refresh,$update,$then,$crstype) = @_;
1631: my ($is_cc,$ccrole);
1632: if ($crstype eq 'Community') {
1633: $ccrole = 'co';
1634: } else {
1635: $ccrole = 'cc';
1636: }
1637: if ($cdom ne '' && $cnum ne '') {
1638: if (&Apache::lonnet::is_course($cdom,$cnum)) {
1639: my $envkey = 'user.role.'.$ccrole.'./'.$cdom.'/'.$cnum;
1640: if (defined($env{$envkey})) {
1641: $is_cc = 1;
1642: my ($tstart,$tend)=split(/\./,$env{$envkey});
1643: my $limit = $update;
1644: if ($env{'request.role'} eq $ccrole.'./'.$cdom.'/'.$cnum) {
1645: $limit = $then;
1646: }
1647: if ($tstart && $tstart>$refresh) { $is_cc = 0; }
1648: if ($tend && $tend <$limit) { $is_cc = 0; }
1649: }
1650: }
1651: }
1652: return $is_cc;
1653: }
1654:
1655: sub check_release_required {
1656: my ($loncaparev,$tcourseid,$trolecode,$required) = @_;
1657: my ($switchserver,$warning);
1658: if ($required ne '') {
1659: my ($reqdmajor,$reqdminor) = ($required =~ /^(\d+)\.(\d+)$/);
1660: my ($major,$minor) = ($loncaparev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
1661: if ($reqdmajor ne '' && $reqdminor ne '') {
1662: my $otherserver;
1663: if (($major eq '' && $minor eq '') ||
1664: (($reqdmajor > $major) || (($reqdmajor == $major) && ($reqdminor > $minor)))) {
1665: my ($userdomserver) = &Apache::lonnet::choose_server($env{'user.domain'});
1666: my $switchlcrev =
1667: &Apache::lonnet::get_server_loncaparev($env{'user.domain'},
1668: $userdomserver);
1669: my ($swmajor,$swminor) = ($switchlcrev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
1670: if (($swmajor eq '' && $swminor eq '') || ($reqdmajor > $swmajor) ||
1671: (($reqdmajor == $swmajor) && ($reqdminor > $swminor))) {
1672: my $cdom = $env{'course.'.$tcourseid.'.domain'};
1673: if ($cdom ne $env{'user.domain'}) {
1674: my ($coursedomserver,$coursehostname) = &Apache::lonnet::choose_server($cdom);
1675: my $serverhomeID = &Apache::lonnet::get_server_homeID($coursehostname);
1676: my $serverhomedom = &Apache::lonnet::host_domain($serverhomeID);
1677: my %defdomdefaults = &Apache::lonnet::get_domain_defaults($serverhomedom);
1678: my %udomdefaults = &Apache::lonnet::get_domain_defaults($env{'user.domain'});
1679: my $remoterev = &Apache::lonnet::get_server_loncaparev($serverhomedom,$coursedomserver);
1680: my $canhost =
1681: &Apache::lonnet::can_host_session($env{'user.domain'},
1682: $coursedomserver,
1683: $remoterev,
1684: $udomdefaults{'remotesessions'},
1685: $defdomdefaults{'hostedsessions'});
1686:
1687: if ($canhost) {
1688: $otherserver = $coursedomserver;
1689: } else {
1690: $warning = &mt('Requires LON-CAPA version [_1].',$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.");
1691: }
1692: } else {
1693: $warning = &mt('Requires LON-CAPA version [_1].',$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).");
1694: }
1695: } else {
1696: $otherserver = $userdomserver;
1697: }
1698: }
1699: if ($otherserver ne '') {
1700: $switchserver = 'otherserver='.$otherserver.'&role='.$trolecode;
1701: }
1702: }
1703: }
1704: return ($switchserver,$warning);
1705: }
1706:
1707: sub update_content_constraints {
1708: my ($cdom,$cnum,$chome,$cid) = @_;
1709: my %curr_reqd_hash = &Apache::lonnet::userenvironment($cdom,$cnum,'internal.releaserequired');
1710: my ($reqdmajor,$reqdminor) = split(/\./,$curr_reqd_hash{'internal.releaserequired'});
1711: my %checkresponsetypes;
1712: foreach my $key (keys(%Apache::lonnet::needsrelease)) {
1713: my ($item,$name,$value) = split(/:/,$key);
1714: if ($item eq 'resourcetag') {
1715: if ($name eq 'responsetype') {
1716: $checkresponsetypes{$value} = $Apache::lonnet::needsrelease{$key}
1717: }
1718: }
1719: }
1720: my $navmap = Apache::lonnavmaps::navmap->new();
1721: if (defined($navmap)) {
1722: my %allresponses;
1723: foreach my $res ($navmap->retrieveResources(undef,sub { $_[0]->is_problem() },1,0)) {
1724: my %responses = $res->responseTypes();
1725: foreach my $key (keys(%responses)) {
1726: next unless(exists($checkresponsetypes{$key}));
1727: $allresponses{$key} += $responses{$key};
1728: }
1729: }
1730: foreach my $key (keys(%allresponses)) {
1731: my ($major,$minor) = split(/\./,$checkresponsetypes{$key});
1732: if (($major > $reqdmajor) || ($major == $reqdmajor && $minor > $reqdminor)) {
1733: ($reqdmajor,$reqdminor) = ($major,$minor);
1734: }
1735: }
1736: undef($navmap);
1737: }
1738: unless (($reqdmajor eq '') && ($reqdminor eq '')) {
1739: &Apache::lonnet::update_released_required($reqdmajor.'.'.$reqdminor,$cdom,$cnum,$chome,$cid);
1740: }
1741: return;
1742: }
1743:
1744: sub courselink {
1745: my ($dcdom,$rowtype) = @_;
1746: my $courseform=&Apache::loncommon::selectcourse_link
1747: ('rolechoice','dccourse'.$rowtype.'_'.$dcdom,
1748: 'dcdomain'.$rowtype.'_'.$dcdom,'coursedesc'.$rowtype.'_'.
1749: $dcdom,$dcdom,undef,'Course/Community');
1750: my $hiddenitems = '<input type="hidden" name="dcdomain'.$rowtype.'_'.$dcdom.'" value="'.$dcdom.'" />'.
1751: '<input type="hidden" name="origdom'.$rowtype.'_'.$dcdom.'" value="'.$dcdom.'" />'.
1752: '<input type="hidden" name="dccourse'.$rowtype.'_'.$dcdom.'" value="" />'.
1753: '<input type="hidden" name="coursedesc'.$rowtype.'_'.$dcdom.'" value="" />';
1754: return $courseform.$hiddenitems;
1755: }
1756:
1757: sub coursepick_jscript {
1758: my %lt = &Apache::lonlocal::texthash(
1759: 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.",
1760: youc => 'You can only use this screen to select courses and communities in the current domain.',
1761: );
1762: my $verify_script = <<"END";
1763: <script type="text/javascript">
1764: // <![CDATA[
1765: function verifyCoursePick(caller) {
1766: var numbutton = getIndex(caller)
1767: var pickedCourse = document.rolechoice.elements[numbutton+4].value
1768: var pickedDomain = document.rolechoice.elements[numbutton+2].value
1769: if (document.rolechoice.elements[numbutton+2].value == document.rolechoice.elements[numbutton+3].value) {
1770: if (pickedCourse != '') {
1771: if (numbutton != -1) {
1772: var courseTarget = "cc./"+pickedDomain+"/"+pickedCourse
1773: document.rolechoice.elements[numbutton+1].name = courseTarget
1774: document.rolechoice.submit()
1775: }
1776: }
1777: else {
1778: alert("$lt{'plsu'}");
1779: }
1780: }
1781: else {
1782: alert("$lt{'youc'}")
1783: }
1784: }
1785: function getIndex(caller) {
1786: for (var i=0;i<document.rolechoice.elements.length;i++) {
1787: if (document.rolechoice.elements[i] == caller) {
1788: return i;
1789: }
1790: }
1791: return -1;
1792: }
1793: // ]]>
1794: </script>
1795: END
1796: return $verify_script;
1797: }
1798:
1799: sub coauthorlink {
1800: my ($dcdom,$rowtype) = @_;
1801: my $coauthorform=&Apache::loncommon::selectauthor_link('rolechoice',$dcdom);
1802: my $hiddenitems = '<input type="hidden" name="adhoccauname'.$rowtype.'_'.$dcdom.'" value="" />';
1803: return $coauthorform.$hiddenitems;
1804: }
1805:
1806: sub display_cc_role {
1807: my $rolekey = shift;
1808: my ($roletext,$roletext_end);
1809: my $advanced = $env{'user.adv'};
1810: my $tryagain = $env{'form.tryagain'};
1811: unless ($rolekey =~/^error\:/) {
1812: if ($rolekey =~ m{^user\.role\.(cc|co)\./($match_domain)/($match_courseid)$}) {
1813: my $ccrole = $1;
1814: my $tdom = $2;
1815: my $trest = $3;
1816: my $tcourseid = $tdom.'_'.$trest;
1817: my $trolecode = $ccrole.'./'.$tdom.'/'.$trest;
1818: my $twhere;
1819: my $ttype;
1820: my $tbg='LC_roles_is';
1821: my %newhash=&Apache::lonnet::coursedescription($tcourseid);
1822: if (%newhash) {
1823: $twhere=$newhash{'description'}.
1824: ' <span class="LC_fontsize_small">'.
1825: &Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$trest,$tdom).
1826: '</span>';
1827: $ttype = $newhash{'type'};
1828: } else {
1829: $twhere=&mt('Currently not available');
1830: $env{'course.'.$tcourseid.'.description'}=$twhere;
1831: }
1832: my $trole = &Apache::lonnet::plaintext($ccrole,$ttype,$tcourseid);
1833: $twhere.="<br />".&mt('Domain').":".$tdom;
1834: ($roletext,$roletext_end) = &build_roletext($trolecode,$tdom,$trest,'is',$tryagain,$advanced,'',$tbg,$trole,$twhere,'','','',1,'');
1835: }
1836: }
1837: return ($roletext,$roletext_end);
1838: }
1839:
1840: sub adhoc_roles_row {
1841: my ($dcdom,$rowtype) = @_;
1842: my $output = &Apache::loncommon::continue_data_table_row()
1843: .' <td colspan="5">'
1844: .&mt('[_1]Ad hoc[_2] roles in domain [_3] --'
1845: ,'<span class="LC_cusr_emph">','</span>',$dcdom)
1846: .' ';
1847: my $selectcclink = &courselink($dcdom,$rowtype);
1848: my $ccrole = &Apache::lonnet::plaintext('co',undef,undef,1);
1849: my $carole = &Apache::lonnet::plaintext('ca');
1850: my $selectcalink = &coauthorlink($dcdom,$rowtype);
1851: $output.=$ccrole.': '.$selectcclink
1852: .' | '.$carole.': '.$selectcalink.'</td>'
1853: .&Apache::loncommon::end_data_table_row();
1854: return $output;
1855: }
1856:
1857: sub recent_filename {
1858: my $area=shift;
1859: return 'nohist_recent_'.&escape($area);
1860: }
1861:
1862: sub courseloadpage {
1863: my ($courseid) = @_;
1864: my $startpage;
1865: my %entry_settings = &Apache::lonnet::get('nohist_whatsnew',
1866: [$courseid.':courseinit']);
1867: my ($tmp) = %entry_settings;
1868: unless ($tmp =~ /^error: 2 /) {
1869: $startpage = $entry_settings{$courseid.':courseinit'};
1870: }
1871: if ($startpage eq '') {
1872: if (exists($env{'environment.course_init_display'})) {
1873: $startpage = $env{'environment.course_init_display'};
1874: }
1875: }
1876: return $startpage;
1877: }
1878:
1879: sub update_session_roles {
1880: my $then=$env{'user.login.time'};
1881: my $refresh=$env{'user.refresh.time'};
1882: if (!$refresh) {
1883: $refresh = $then;
1884: }
1885: my $update = $env{'user.update.time'};
1886: if (!$update) {
1887: $update = $then;
1888: }
1889: my $now = time;
1890: my %roleshash =
1891: &Apache::lonnet::get_my_roles('','','userroles',
1892: ['active','future','previous'],
1893: undef,undef,1);
1894: my ($msg,@newsec,$oldsec,$currrole_expired,@changed_roles,
1895: %changed_groups,%dbroles,%deletedroles,%allroles,%allgroups,
1896: %userroles,%checkedgroup,%crprivs,$hasgroups,%rolechange,
1897: %groupchange,%newrole,%newgroup,%customprivchg,%groups_roles,
1898: @rolecodes);
1899: my @possroles = ('cr','st','ta','ad','ep','in','co','cc');
1900: my %courseroles;
1901: foreach my $item (keys(%roleshash)) {
1902: my ($uname,$udom,$role,$remainder) = split(/:/,$item,4);
1903: my ($tstart,$tend) = split(/:/,$roleshash{$item});
1904: my ($section,$group,@group_privs);
1905: if ($role =~ m{^gr/(\w*)$}) {
1906: $role = 'gr';
1907: my $priv = $1;
1908: next if ($tstart eq '-1');
1909: if (&curr_role_status($tstart,$tend,$refresh,$now) eq 'active') {
1910: if ($priv ne '') {
1911: push(@group_privs,$priv);
1912: }
1913: }
1914: if ($remainder =~ /:/) {
1915: (my $additional_privs,$group) =
1916: ($remainder =~ /^([\w:]+):([^:]+)$/);
1917: if ($additional_privs ne '') {
1918: if (&curr_role_status($tstart,$tend,$refresh,$now) eq 'active') {
1919: push(@group_privs,split(/:/,$additional_privs));
1920: @group_privs = sort(@group_privs);
1921: }
1922: }
1923: } else {
1924: $group = $remainder;
1925: }
1926: } else {
1927: $section = $remainder;
1928: }
1929: my $where = "/$udom/$uname";
1930: if ($section ne '') {
1931: $where .= "/$section";
1932: } elsif ($group ne '') {
1933: $where .= "/$group";
1934: }
1935: my $rolekey = "$role.$where";
1936: my $envkey = "user.role.$rolekey";
1937: $dbroles{$envkey} = 1;
1938: if (($env{'request.role'} eq $rolekey) && ($role ne 'st')) {
1939: if (&curr_role_status($tstart,$tend,$refresh,$now) ne 'active') {
1940: $currrole_expired = 1;
1941: }
1942: }
1943: if ($env{$envkey} eq '') {
1944: my $status_in_db =
1945: &curr_role_status($tstart,$tend,$refresh,$now);
1946: &gather_roleprivs(\%allroles,\%allgroups,\%userroles,$where,$role,$tstart,$tend,$status_in_db);
1947: if (($role eq 'st') && ($env{'request.role'} =~ m{^\Q$role\E\.\Q/$udom/$uname\E})) {
1948: if ($status_in_db eq 'active') {
1949: if ($section eq '') {
1950: push(@newsec,'none');
1951: } else {
1952: push(@newsec,$section);
1953: }
1954: }
1955: } else {
1956: unless (grep(/^\Q$role\E$/,@changed_roles)) {
1957: push(@changed_roles,$role);
1958: }
1959: if ($status_in_db ne 'previous') {
1960: if ($role eq 'gr') {
1961: $newgroup{$rolekey} = $status_in_db;
1962: if ($status_in_db eq 'active') {
1963: unless (ref($courseroles{$udom}) eq 'HASH') {
1964: %{$courseroles{$udom}} =
1965: &Apache::lonnet::get_my_roles('','','userroles',
1966: ['active'],\@possroles,
1967: [$udom],1);
1968: }
1969: &Apache::lonnet::get_groups_roles($udom,$uname,
1970: $courseroles{$udom},
1971: \@rolecodes,\%groups_roles);
1972: }
1973: } else {
1974: $newrole{$rolekey} = $status_in_db;
1975: }
1976: }
1977: }
1978: } else {
1979: my ($currstart,$currend) = split(/\./,$env{$envkey});
1980: if ($role eq 'gr') {
1981: if (&curr_role_status($currstart,$currend,$refresh,$update) ne 'previous') {
1982: $hasgroups = 1;
1983: }
1984: }
1985: if (($currstart ne $tstart) || ($currend ne $tend)) {
1986: my $status_in_env =
1987: &curr_role_status($currstart,$currend,$refresh,$update);
1988: my $status_in_db =
1989: &curr_role_status($tstart,$tend,$refresh,$now);
1990: if ($status_in_env ne $status_in_db) {
1991: if ($status_in_env eq 'active') {
1992: if ($role eq 'st') {
1993: if ($env{'request.role'} eq $rolekey) {
1994: my $switchsection;
1995: unless (ref($courseroles{$udom}) eq 'HASH') {
1996: %{$courseroles{$udom}} =
1997: &Apache::lonnet::get_my_roles('','','userroles',
1998: ['active'],
1999: \@possroles,[$udom],1);
2000: }
2001: foreach my $crsrole (keys(%{$courseroles{$udom}})) {
2002: if ($crsrole =~ /^\Q$uname\E:\Q$udom\E:st/) {
2003: $switchsection = 1;
2004: last;
2005: }
2006: }
2007: if ($switchsection) {
2008: if ($section eq '') {
2009: $oldsec = 'none';
2010: } else {
2011: $oldsec = $section;
2012: }
2013: &gather_roleprivs(\%allroles,\%allgroups,\%userroles,$where,$role,$tstart,$tend,$status_in_db);
2014: } else {
2015: $currrole_expired = 1;
2016: next;
2017: }
2018: }
2019: }
2020: unless ($rolekey eq $env{'request.role'}) {
2021: if ($role eq 'gr') {
2022: &Apache::lonnet::delete_env_groupprivs($where,\%courseroles,\@possroles);
2023: } else {
2024: &Apache::lonnet::delenv("user.priv.$rolekey",undef,[$role]);
2025: &Apache::lonnet::delenv("user.priv.cm.$where",undef,['cm']);
2026: }
2027: &gather_roleprivs(\%allroles,\%allgroups,\%userroles,$where,$role,$tstart,$tend,$status_in_db);
2028: }
2029: } elsif ($status_in_db eq 'active') {
2030: if (($role eq 'st') &&
2031: ($env{'request.role'} =~ m{^\Q$role\E\.\Q/$udom/$uname\E})) {
2032: if ($section eq '') {
2033: push(@newsec,'none');
2034: } else {
2035: push(@newsec,$section);
2036: }
2037: } elsif ($role eq 'gr') {
2038: unless (ref($courseroles{$udom}) eq 'HASH') {
2039: %{$courseroles{$udom}} =
2040: &Apache::lonnet::get_my_roles('','','userroles',
2041: ['active'],
2042: \@possroles,[$udom],1);
2043: }
2044: &Apache::lonnet::get_groups_roles($udom,$uname,
2045: $courseroles{$udom},
2046: \@rolecodes,\%groups_roles);
2047: }
2048: &gather_roleprivs(\%allroles,\%allgroups,\%userroles,$where,$role,$tstart,$tend,$status_in_db);
2049: }
2050: unless (grep(/^\Q$role\E$/,@changed_roles)) {
2051: push(@changed_roles,$role);
2052: }
2053: if ($role eq 'gr') {
2054: $groupchange{"/$udom/$uname"}{$group} = $status_in_db;
2055: } else {
2056: $rolechange{$rolekey} = $status_in_db;
2057: }
2058: }
2059: } else {
2060: if ($role eq 'gr') {
2061: unless ($checkedgroup{$where}) {
2062: my $status_in_db =
2063: &curr_role_status($tstart,$tend,$refresh,$now);
2064: if ($tstart eq '-1') {
2065: $status_in_db = 'deleted';
2066: }
2067: unless (ref($courseroles{$udom}) eq 'HASH') {
2068: %{$courseroles{$udom}} =
2069: &Apache::lonnet::get_my_roles('','','userroles',
2070: ['active'],
2071: \@possroles,[$udom],1);
2072: }
2073: if (ref($courseroles{$udom}) eq 'HASH') {
2074: foreach my $item (keys(%{$courseroles{$udom}})) {
2075: next unless ($item =~ /^\Q$uname\E/);
2076: my ($cnum,$cdom,$crsrole,$crssec) = split(/:/,$item);
2077: my $area = '/'.$cdom.'/'.$cnum;
2078: if ($crssec ne '') {
2079: $area .= '/'.$crssec;
2080: }
2081: my $crsrolekey = $crsrole.'.'.$area;
2082: my $currprivs = $env{'user.priv.'.$crsrole.'.'.$area.'.'.$where};
2083: $currprivs =~ s/^://;
2084: $currprivs =~ s/\&F$//;
2085: my @curr_grp_privs = split(/\&F:/,$currprivs);
2086: @curr_grp_privs = sort(@curr_grp_privs);
2087: my @diffs;
2088: if (@group_privs > 0 || @curr_grp_privs > 0) {
2089: @diffs = &Apache::loncommon::compare_arrays(\@group_privs,\@curr_grp_privs);
2090: }
2091: if (@diffs == 0) {
2092: last;
2093: } else {
2094: unless(grep(/^\Qgr\E$/,@rolecodes)) {
2095: push(@rolecodes,'gr');
2096: }
2097: &gather_roleprivs(\%allroles,\%allgroups,
2098: \%userroles,$where,$role,
2099: $tstart,$tend,$status_in_db);
2100: if ($status_in_db eq 'active') {
2101: &Apache::lonnet::get_groups_roles($udom,$uname,
2102: $courseroles{$udom},
2103: \@rolecodes,\%groups_roles);
2104: }
2105: $changed_groups{$udom.'_'.$uname}{$group} = $status_in_db;
2106: last;
2107: }
2108: }
2109: }
2110: $checkedgroup{$where} = 1;
2111: }
2112: } elsif ($role =~ /^cr/) {
2113: my $status_in_db =
2114: &curr_role_status($tstart,$tend,$refresh,$now);
2115: my ($rdummy,$rest) = split(/\//,$role,2);
2116: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$role);
2117: my %currpriv;
2118: unless (exists($crprivs{$rest})) {
2119: my ($rdomain,$rauthor,$rrole)=split(/\//,$rest);
2120: my $homsvr=&Apache::lonnet::homeserver($rauthor,$rdomain);
2121: if (&Apache::lonnet::hostname($homsvr) ne '') {
2122: my ($rdummy,$roledef)=
2123: &Apache::lonnet::get('roles',["rolesdef_$rrole"],
2124: $rdomain,$rauthor);
2125: if (($rdummy ne 'con_lost') && ($roledef ne '')) {
2126: my $i = 0;
2127: my @scopes = ('sys','dom','crs');
2128: my @privs = split(/\_/,$roledef);
2129: foreach my $priv (@privs) {
2130: my ($blank,@prv) = split(/:/,$priv);
2131: @prv = map { $_ .= (/\&\w+$/ ? '':'&F') } @prv;
2132: if (@prv) {
2133: $priv = ':'.join(':',sort(@prv));
2134: }
2135: $crprivs{$rest}{$scopes[$i]} = $priv;
2136: $i++;
2137: }
2138: }
2139: }
2140: }
2141: $currpriv{sys} = $env{"user.priv.$rolekey./"};
2142: $currpriv{dom} = $env{"user.priv.$rolekey./$udom/"};
2143: $currpriv{crs} = $env{"user.priv.$rolekey.$where"};
2144: if (keys(%crprivs)) {
2145: if (($crprivs{$rest}{sys} ne $currpriv{sys}) ||
2146: ($crprivs{$rest}{dom} ne $currpriv{dom})
2147: ||
2148: ($crprivs{$rest}{crs} ne $currpriv{crs})) {
2149: &gather_roleprivs(\%allroles,\%allgroups,\%userroles,$where,$role,$tstart,$tend,$status_in_db);
2150: unless (grep(/^\Q$role\E$/,@changed_roles)) {
2151: push(@changed_roles,$role);
2152: }
2153: my $status_in_env =
2154: &curr_role_status($currstart,$currend,$refresh,$update);
2155: if ($status_in_env eq 'active') {
2156: $customprivchg{$rolekey} = $status_in_env;
2157: }
2158: }
2159: }
2160: }
2161: }
2162: }
2163: }
2164: foreach my $envkey (keys(%env)) {
2165: next unless ($envkey =~ /^user\.role\./);
2166: next if ($dbroles{$envkey});
2167: next if ($envkey eq 'user.role.'.$env{'request.role'});
2168: my ($currstart,$currend) = split(/\./,$env{$envkey});
2169: my $status_in_env =
2170: &curr_role_status($currstart,$currend,$refresh,$update);
2171: my ($rolekey) = ($envkey =~ /^user\.role\.(.+)$/);
2172: my ($role,$rest)=split(/\./,$rolekey,2);
2173: if (&Apache::lonnet::delenv($envkey,undef,[$role])) {
2174: if ($status_in_env eq 'active') {
2175: if ($role eq 'gr') {
2176: &Apache::lonnet::delete_env_groupprivs($rest,\%courseroles,
2177: \@possroles);
2178: } else {
2179: &Apache::lonnet::delenv("user.priv.$rolekey",undef,[$role]);
2180: &Apache::lonnet::delenv("user.priv.cm.$rest",undef,['cm']);
2181: }
2182: unless (grep(/^\Q$role\E$/,@changed_roles)) {
2183: push(@changed_roles,$role);
2184: }
2185: $deletedroles{$rolekey} = 1;
2186: }
2187: }
2188: }
2189: if (($oldsec) && (@newsec > 0)) {
2190: if (@newsec > 1) {
2191: $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>';
2192: } else {
2193: my $newrole = $env{'request.role'};
2194: if ($newsec[0] eq 'none') {
2195: $newrole =~ s{(/[^/])$}{};
2196: } elsif ($oldsec eq 'none') {
2197: $newrole .= '/'.$newsec[0];
2198: } else {
2199: $newrole =~ s{([^/]+)$}{$newsec[0]};
2200: }
2201: my $coursedesc = $env{'course.'.$env{'request.course.id'}.'.description'};
2202: my ($curr_role) = ($env{'request.role'} =~ m{^(\w+)\./$match_domain/$match_courseid});
2203: my %temp=('logout_'.$env{'request.course.id'} => time);
2204: &Apache::lonnet::put('email_status',\%temp);
2205: &Apache::lonnet::delenv('user.state.'.$env{'request.course.id'});
2206: &Apache::lonnet::appenv({"request.course.id" => '',
2207: "request.course.fn" => '',
2208: "request.course.uri" => '',
2209: "request.course.sec" => '',
2210: "request.role" => 'cm',
2211: "request.role.adv" => $env{'user.adv'},
2212: "request.role.domain" => $env{'user.domain'}});
2213: my $rolename = &Apache::loncommon::plainname($curr_role);
2214: $msg = '<p><form name="reselectrole" action="/adm/roles" method="post" />'.
2215: '<input type="hidden" name="newrole" value="" />'.
2216: '<input type="hidden" name="selectrole" value="1" />'.
2217: '<span class="LC_info">'.
2218: &mt('Your section has changed for your current [_1] role in [_2].',$rolename,$coursedesc).'</span><br />';
2219: my $button = '<input type="button" name="sectionchanged" value="'.
2220: &mt('Re-Select').'" onclick="javascript:enterrole(this.form,'."'$newrole','sectionchanged'".')" />';
2221: if ($newsec[0] eq 'none') {
2222: $msg .= &mt('[_1] to continue with your new section-less role.',$button);
2223: } else {
2224: $msg .= &mt('[_1] to continue with your new role in section ([_2]).',$button,$newsec[0]);
2225: }
2226: $msg .= '</form></p>';
2227: }
2228: } elsif ($currrole_expired) {
2229: $msg .= '<div class="LC_warning">';
2230: if (&Apache::loncommon::show_course()) {
2231: $msg .= &mt('Your role in the current course has expired.');
2232: } else {
2233: $msg .= &mt('Your current role has expired.');
2234: }
2235: $msg .= '<br />'.&mt('However you can continue to use this role until you logout, click the "Re-Select" button, or your session has been idle for more than 24 hours.').'</div>';
2236: }
2237: if (!@changed_roles || !(keys(%changed_groups))) {
2238: my ($rolesmsg,$groupsmsg);
2239: if (!@changed_roles) {
2240: if (&Apache::loncommon::show_course()) {
2241: $rolesmsg = &mt('No new courses or communities');
2242: } else {
2243: $rolesmsg = &mt('No role changes');
2244: }
2245: }
2246: if ($hasgroups && !(keys(%changed_groups)) && !(grep(/gr/,@changed_roles))) {
2247: $groupsmsg = &mt('No changes in course/community groups');
2248: }
2249: if (!@changed_roles && !(keys(%changed_groups))) {
2250: if (($msg ne '') || ($groupsmsg ne '')) {
2251: $msg .= '<ul>';
2252: if ($rolesmsg) {
2253: $msg .= '<li>'.$rolesmsg.'</li>';
2254: }
2255: if ($groupsmsg) {
2256: $msg .= '<li>'.$groupsmsg.'</li>';
2257: }
2258: $msg .= '</ul>';
2259: } else {
2260: $msg = ' <span class="LC_cusr_emph">'.$rolesmsg.'</span><br />';
2261: }
2262: return $msg;
2263: }
2264: }
2265: my $changemsg;
2266: if (@changed_roles > 0) {
2267: if (keys(%newgroup) > 0) {
2268: my $groupmsg;
2269: foreach my $item (sort(keys(%newgroup))) {
2270: if (&is_active_course($item,$refresh,$update,\%roleshash)) {
2271: $groupmsg .= '<li>'.
2272: &mt('[_1] with status: [_2].',
2273: $item,$newgroup{$item}).'</li>';
2274: }
2275: }
2276: if ($groupmsg) {
2277: $changemsg .= '<li>'.
2278: &mt('Courses with new groups').'</li>'.
2279: '<ul>'.$groupmsg.'</ul></li>';
2280: }
2281: }
2282: if (keys(%newrole) > 0) {
2283: $changemsg .= '<li>'.&mt('New roles').
2284: '<ul>';
2285: foreach my $item (sort(keys(%newrole))) {
2286: $changemsg .= '<li>'.
2287: &mt('[_1] with status: [_2].',
2288: $item,$newrole{$item}).'</li>';
2289: }
2290: $changemsg .= '</ul></li>';
2291: }
2292: if (keys(%customprivchg) > 0) {
2293: $changemsg .= '<li>'.
2294: &mt('Custom roles with privilege changes').
2295: '<ul>';
2296: foreach my $item (sort(keys(%customprivchg))) {
2297: $changemsg .= '<li>'.$item.'</li>';
2298: }
2299: $changemsg .= '</ul></li>';
2300: }
2301: if (keys(%rolechange) > 0) {
2302: $changemsg .= '<li>'.
2303: &mt('Existing roles with status changes').'</li>'.
2304: '<ul>';
2305: foreach my $item (sort(keys(%rolechange))) {
2306: $changemsg .= '<li>'.
2307: &mt('[_1] status now: [_2].',$item,
2308: $rolechange{$item}).'</li>';
2309: }
2310: $changemsg .= '</ul></li>';
2311: }
2312: if (keys(%deletedroles) > 0) {
2313: $changemsg .= '<li>'.
2314: &mt('Existing roles deleted').'</li>'.
2315: '<ul>';
2316: foreach my $item (sort(keys(%deletedroles))) {
2317: $changemsg .= '<li>'.$item.'</li>';
2318: }
2319: $changemsg .= '</ul></li>';
2320: }
2321: }
2322: if ((keys(%changed_groups) > 0) || (keys(%groupchange) > 0)) {
2323: my $groupchgmsg;
2324: foreach my $key (sort(keys(%changed_groups))) {
2325: my $crs = 'gr/'.$key;
2326: $crs =~ s/_/\//;
2327: if (&is_active_course($crs,$refresh,$update,\%roleshash)) {
2328: if (ref($changed_groups{$key}) eq 'HASH') {
2329: my @showgroups;
2330: foreach my $group (sort(keys(%{$changed_groups{$key}}))) {
2331: if ($changed_groups{$key}{$group} eq 'active') {
2332: push(@showgroups,$group);
2333: }
2334: }
2335: if (@showgroups > 0) {
2336: $groupchgmsg .= '<li>'.
2337: &mt('Course: [_1], groups: [_2].',$key,
2338: join(', ',@showgroups)).
2339: '</li>';
2340: }
2341: }
2342: }
2343: }
2344: if (keys(%groupchange) > 0) {
2345: $groupchgmsg .= '<li>'.
2346: &mt('Existing course/community groups with status changes').'</li>'.
2347: '<ul>';
2348: foreach my $crs (sort(keys(%groupchange))) {
2349: if (ref($groupchange{$crs}) eq 'HASH') {
2350: $groupchgmsg .= '<li>'.&mt('Course/Community: [_1]','<b>'.$crs.'</b><ul>');
2351: foreach my $group (sort(keys(%{$groupchange{$crs}}))) {
2352: $groupchgmsg .= '<li>'.&mt('Group: [_1] status now: [_2].','<b>'.$group.'</b>',$groupchange{$crs}{$group}).'</li>';
2353: }
2354: $groupchgmsg .= '</ul></li>';
2355: }
2356: }
2357: $groupchgmsg .= '</ul></li>';
2358: }
2359: if ($groupchgmsg) {
2360: $changemsg .= '<li>'.
2361: &mt('Courses with changes in groups').'</li>'.
2362: '<ul>'.$groupchgmsg.'</ul></li>';
2363: }
2364: }
2365: if ($changemsg) {
2366: $msg .= '<ul>'.$changemsg.'</ul>';
2367: }
2368: &Apache::lonnet::set_userprivs(\%userroles,\%allroles,\%allgroups,\%groups_roles);
2369: my ($curr_is_adv,$curr_role_adv,$curr_author,$curr_role_author);
2370: $curr_author = $env{'user.author'};
2371: if (($env{'request.role'} =~/^au/) || ($env{'request.role'} =~/^ca/) ||
2372: ($env{'request.role'} =~/^aa/)) {
2373: $curr_role_author=1;
2374: }
2375: $curr_is_adv = $env{'user.adv'};
2376: $curr_role_adv = $env{'request.role.adv'};
2377: if (keys(%userroles) > 0) {
2378: foreach my $role (@changed_roles) {
2379: unless(grep(/^\Q$role\E$/,@rolecodes)) {
2380: push(@rolecodes,$role);
2381: }
2382: }
2383: unless(grep(/^\Qcm\E$/,@rolecodes)) {
2384: push(@rolecodes,'cm');
2385: }
2386: &Apache::lonnet::appenv(\%userroles,\@rolecodes);
2387: }
2388: my %newenv;
2389: if (&Apache::lonnet::is_advanced_user($env{'user.domain'},$env{'user.name'})) {
2390: unless ($curr_is_adv) {
2391: $newenv{'user.adv'} = 1;
2392: }
2393: } elsif ($curr_is_adv && !$curr_role_adv) {
2394: &Apache::lonnet::delenv('user.adv');
2395: }
2396: my %authorroleshash =
2397: &Apache::lonnet::get_my_roles('','','userroles',['active'],['au','ca','aa']);
2398: if (keys(%authorroleshash)) {
2399: unless ($curr_author) {
2400: $newenv{'user.author'} = 1;
2401: }
2402: } elsif ($curr_author && !$curr_role_author) {
2403: &Apache::lonnet::delenv('user.author');
2404: }
2405: if ($env{'request.course.id'}) {
2406: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
2407: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
2408: my (@activecrsgroups,$crsgroupschanged);
2409: if ($env{'request.course.groups'}) {
2410: @activecrsgroups = split(/:/,$env{'request.course.groups'});
2411: foreach my $item (keys(%deletedroles)) {
2412: if ($item =~ m{^gr\./\Q$cdom\E/\Q$cnum\E/(\w+)$}) {
2413: if (grep(/^\Q$1\E$/,@activecrsgroups)) {
2414: $crsgroupschanged = 1;
2415: last;
2416: }
2417: }
2418: }
2419: }
2420: unless ($crsgroupschanged) {
2421: foreach my $item (keys(%newgroup)) {
2422: if ($item =~ m{^gr\./\Q$cdom\E/\Q$cnum\E/(\w+)$}) {
2423: if ($newgroup{$item} eq 'active') {
2424: $crsgroupschanged = 1;
2425: last;
2426: }
2427: }
2428: }
2429: }
2430: if ((ref($changed_groups{$env{'request.course.id'}}) eq 'HASH') ||
2431: (ref($groupchange{"/$cdom/$cnum"}) eq 'HASH') ||
2432: ($crsgroupschanged)) {
2433: my %grouproles = &Apache::lonnet::get_my_roles('','','userroles',
2434: ['active'],['gr'],[$cdom],1);
2435: my @activegroups;
2436: foreach my $item (keys(%grouproles)) {
2437: next unless($item =~ /^\Q$cnum\E:\Q$cdom\E/);
2438: my $group;
2439: my ($crsn,$crsd,$role,$remainder) = split(/:/,$item,4);
2440: if ($remainder =~ /:/) {
2441: (my $other,$group) = ($remainder =~ /^([\w:]+):([^:]+)$/);
2442: } else {
2443: $group = $remainder;
2444: }
2445: if ($group ne '') {
2446: push(@activegroups,$group);
2447: }
2448: }
2449: $newenv{'request.course.groups'} = join(':',@activegroups);
2450: }
2451: }
2452: if (keys(%newenv)) {
2453: &Apache::lonnet::appenv(\%newenv);
2454: }
2455: return $msg;
2456: }
2457:
2458: sub curr_role_status {
2459: my ($start,$end,$refresh,$update) = @_;
2460: if (($start) && ($start<0)) { return 'deleted' };
2461: my $status = 'active';
2462: if (($end) && ($end<=$update)) {
2463: $status = 'previous';
2464: }
2465: if (($start) && ($refresh<$start)) {
2466: $status = 'future';
2467: }
2468: return $status;
2469: }
2470:
2471: sub gather_roleprivs {
2472: my ($allroles,$allgroups,$userroles,$area,$role,$tstart,$tend,$status) = @_;
2473: return unless ((ref($allroles) eq 'HASH') && (ref($allgroups) eq 'HASH') && (ref($userroles) eq 'HASH'));
2474: if (($area ne '') && ($role ne '')) {
2475: &Apache::lonnet::userrolelog($role,$env{'user.name'},$env{'user.domain'},
2476: $area,$tstart,$tend);
2477: my $spec=$role.'.'.$area;
2478: $userroles->{'user.role.'.$spec} = $tstart.'.'.$tend;
2479: my ($tdummy,$tdomain,$trest)=split(/\//,$area);
2480: if ($status eq 'active') {
2481: if ($role =~ /^cr\//) {
2482: &Apache::lonnet::custom_roleprivs($allroles,$role,$tdomain,$trest,$spec,$area);
2483: } elsif ($role eq 'gr') {
2484: my %rolehash = &Apache::lonnet::get('roles',[$area.'_'.$role],
2485: $env{'user.domain'},
2486: $env{'user.name'});
2487: my ($trole) = split(/_/,$rolehash{$area.'_'.$role},2);
2488: (undef,my $group_privs) = split(/\//,$trole);
2489: $group_privs = &unescape($group_privs);
2490: &Apache::lonnet::group_roleprivs($allgroups,$area,$group_privs,$tend,$tstart);
2491: } else {
2492: &Apache::lonnet::standard_roleprivs($allroles,$role,$tdomain,$spec,$trest,$area);
2493: }
2494: }
2495: }
2496: return;
2497: }
2498:
2499: sub is_active_course {
2500: my ($rolekey,$refresh,$update,$roleshashref) = @_;
2501: return unless(ref($roleshashref) eq 'HASH');
2502: my ($role,$cdom,$cnum) = split(/\//,$rolekey);
2503: my $is_active;
2504: foreach my $key (keys(%{$roleshashref})) {
2505: if ($key =~ /^\Q$cnum\E:\Q$cdom\E:/) {
2506: my ($tstart,$tend) = split(/:/,$roleshashref->{$key});
2507: my $status = &curr_role_status($tstart,$tend,$refresh,$update);
2508: if ($status eq 'active') {
2509: $is_active = 1;
2510: last;
2511: }
2512: }
2513: }
2514: return $is_active;
2515: }
2516:
2517: 1;
2518: __END__
2519:
2520: =head1 NAME
2521:
2522: Apache::lonroles - User Roles Screen
2523:
2524: =head1 SYNOPSIS
2525:
2526: Invoked by /etc/httpd/conf/srm.conf:
2527:
2528: <Location /adm/roles>
2529: PerlAccessHandler Apache::lonacc
2530: SetHandler perl-script
2531: PerlHandler Apache::lonroles
2532: ErrorDocument 403 /adm/login
2533: ErrorDocument 500 /adm/errorhandler
2534: </Location>
2535:
2536: =head1 OVERVIEW
2537:
2538: =head2 Choosing Roles
2539:
2540: C<lonroles> is a handler that allows a user to switch roles in
2541: mid-session. LON-CAPA attempts to work with "No Role Specified", the
2542: default role that a user has before selecting a role, as widely as
2543: possible, but certain handlers for example need specification which
2544: course they should act on, etc. Both in this scenario, and when the
2545: handler determines via C<lonnet>'s C<&allowed> function that a certain
2546: action is not allowed, C<lonroles> is used as error handler. This
2547: allows the user to select another role which may have permission to do
2548: what they were trying to do.
2549:
2550: =begin latex
2551:
2552: \begin{figure}
2553: \begin{center}
2554: \includegraphics[width=0.45\paperwidth,keepaspectratio]{Sample_Roles_Screen}
2555: \caption{\label{Sample_Roles_Screen}Sample Roles Screen}
2556: \end{center}
2557: \end{figure}
2558:
2559: =end latex
2560:
2561: =head2 Role Initialization
2562:
2563: 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.
2564:
2565: =head1 INTRODUCTION
2566:
2567: This module enables a user to select what role he wishes to
2568: operate under (instructor, student, teaching assistant, course
2569: coordinator, etc). These roles are pre-established by the actions
2570: of upper-level users.
2571:
2572: This is part of the LearningOnline Network with CAPA project
2573: described at http://www.lon-capa.org.
2574:
2575: =head1 HANDLER SUBROUTINE
2576:
2577: This routine is called by Apache and mod_perl.
2578:
2579: =over 4
2580:
2581: =item *
2582:
2583: Roles Initialization (yes/no)
2584:
2585: =item *
2586:
2587: Get Error Message from Environment
2588:
2589: =item *
2590:
2591: Who is this?
2592:
2593: =item *
2594:
2595: Generate Page Output
2596:
2597: =item *
2598:
2599: Choice or no choice
2600:
2601: =item *
2602:
2603: Table
2604:
2605: =item *
2606:
2607: Privileges
2608:
2609: =back
2610:
2611: =cut
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