Annotation of loncom/auth/lonroles.pm, revision 1.226
1.1 harris41 1: # The LearningOnline Network with CAPA
2: # User Roles Screen
1.31 www 3: #
1.226 ! raeburn 4: # $Id: lonroles.pm,v 1.225 2009/05/22 17:57:03 bisitz Exp $
1.31 www 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: #
1.32 harris41 28: ###
1.22 harris41 29:
1.210 jms 30: =pod
31:
32: =head1 NAME
33:
34: Apache::lonroles - User Roles Screen
35:
36: =head1 SYNOPSIS
37:
38: Invoked by /etc/httpd/conf/srm.conf:
39:
40: <Location /adm/roles>
41: PerlAccessHandler Apache::lonacc
42: SetHandler perl-script
43: PerlHandler Apache::lonroles
44: ErrorDocument 403 /adm/login
45: ErrorDocument 500 /adm/errorhandler
46: </Location>
47:
48: =head1 OVERVIEW
49:
50: =head2 Choosing Roles
51:
52: C<lonroles> is a handler that allows a user to switch roles in
53: mid-session. LON-CAPA attempts to work with "No Role Specified", the
54: default role that a user has before selecting a role, as widely as
55: possible, but certain handlers for example need specification which
56: course they should act on, etc. Both in this scenario, and when the
57: handler determines via C<lonnet>'s C<&allowed> function that a certain
58: action is not allowed, C<lonroles> is used as error handler. This
59: allows the user to select another role which may have permission to do
60: what they were trying to do. C<lonroles> can also be accessed via the
61: B<CRS> button in the Remote Control.
62:
63: =begin latex
64:
65: \begin{figure}
66: \begin{center}
67: \includegraphics[width=0.45\paperwidth,keepaspectratio]{Sample_Roles_Screen}
68: \caption{\label{Sample_Roles_Screen}Sample Roles Screen}
69: \end{center}
70: \end{figure}
71:
72: =end latex
73:
74: =head2 Role Initialization
75:
76: The privileges for a user are established at login time and stored in the session environment. As a consequence, a new role does not become active till the next login. Handlers are able to query for privileges using C<lonnet>'s C<&allowed> function. When a user first logs in, their role is the "common" role, which means that they have the sum of all of their privileges. During a session it might become necessary to choose a particular role, which as a consequence also limits the user to only the privileges in that particular role.
77:
78: =head1 INTRODUCTION
79:
80: This module enables a user to select what role he wishes to
81: operate under (instructor, student, teaching assistant, course
82: coordinator, etc). These roles are pre-established by the actions
83: of upper-level users.
84:
85: This is part of the LearningOnline Network with CAPA project
86: described at http://www.lon-capa.org.
87:
88: =head1 HANDLER SUBROUTINE
89:
90: This routine is called by Apache and mod_perl.
91:
92: =over 4
93:
94: =item *
95:
96: Roles Initialization (yes/no)
97:
98: =item *
99:
100: Get Error Message from Environment
101:
102: =item *
103:
104: Who is this?
105:
106: =item *
107:
108: Generate Page Output
109:
110: =item *
111:
112: Choice or no choice
113:
114: =item *
115:
116: Table
117:
118: =item *
119:
120: Privileges
121:
122: =back
123:
124: =cut
125:
126:
1.1 harris41 127: package Apache::lonroles;
128:
129: use strict;
1.118 albertel 130: use Apache::lonnet;
1.7 www 131: use Apache::lonuserstate();
1.1 harris41 132: use Apache::Constants qw(:common);
1.2 www 133: use Apache::File();
1.26 www 134: use Apache::lonmenu;
1.29 albertel 135: use Apache::loncommon;
1.104 raeburn 136: use Apache::lonhtmlcommon;
1.57 www 137: use Apache::lonannounce;
1.72 www 138: use Apache::lonlocal;
1.151 www 139: use Apache::lonpageflip();
1.167 albertel 140: use Apache::lonnavdisplay();
1.120 albertel 141: use GDBM_File;
1.170 albertel 142: use LONCAPA qw(:DEFAULT :match);
1.201 raeburn 143: use HTML::Entities;
1.149 www 144:
1.1 harris41 145:
1.62 matthew 146: sub redirect_user {
1.95 albertel 147: my ($r,$title,$url,$msg,$launch_nav) = @_;
1.62 matthew 148: $msg = $title if (! defined($msg));
1.73 www 149: &Apache::loncommon::content_type($r,'text/html');
1.62 matthew 150: &Apache::loncommon::no_cache($r);
151: $r->send_http_header;
152: my $swinfo=&Apache::lonmenu::rawconfig();
1.96 albertel 153: my $navwindow;
1.95 albertel 154: if ($launch_nav eq 'on') {
1.166 albertel 155: $navwindow.=&Apache::lonnavdisplay::launch_win('now',undef,undef,
156: ($url =~ m-^/adm/whatsnew-));
1.96 albertel 157: } else {
158: $navwindow.=&Apache::lonnavmaps::close();
1.95 albertel 159: }
1.147 albertel 160: my $start_page = &Apache::loncommon::start_page('Switching Role',undef,
161: {'redirect' => [1,$url],});
162: my $end_page = &Apache::loncommon::end_page();
163:
1.92 www 164: # Note to style police:
165: # This must only replace the spaces, nothing else, or it bombs elsewhere.
166: $url=~s/ /\%20/g;
1.93 albertel 167: $r->print(<<ENDREDIR);
1.147 albertel 168: $start_page
1.96 albertel 169: <script type="text/javascript">
1.225 bisitz 170: // <![CDATA[
1.62 matthew 171: $swinfo
1.225 bisitz 172: // ]]>
1.62 matthew 173: </script>
1.96 albertel 174: $navwindow
1.222 bisitz 175: <p>$msg</p>
1.147 albertel 176: $end_page
1.62 matthew 177: ENDREDIR
178: return;
179: }
180:
1.150 www 181: sub error_page {
182: my ($r,$error,$dest)=@_;
183: &Apache::loncommon::content_type($r,'text/html');
184: &Apache::loncommon::no_cache($r);
185: $r->send_http_header;
186: return OK if $r->header_only;
187: $r->print(&Apache::loncommon::start_page('Problems during Course Initialization').
1.225 bisitz 188: '<script type="text/javascript">'.
189: '// <![CDATA['.
190: &Apache::lonmenu::rawconfig().
191: '// ]]>'.
192: '</script>'.
193: '<p class="LC_error">'.&mt('The following problems occurred:').
1.150 www 194: $error.
1.156 albertel 195: '</p><br /><a href="'.$dest.'">'.&mt('Continue').'</a>'.
1.150 www 196: &Apache::loncommon::end_page());
197: }
198:
1.1 harris41 199: sub handler {
1.10 www 200:
1.1 harris41 201: my $r = shift;
202:
1.6 www 203: my $now=time;
1.118 albertel 204: my $then=$env{'user.login.time'};
1.226 ! raeburn 205: my $refresh=$env{'user.refresh.time'};
! 206: if (!$refresh) {
! 207: $refresh = $then;
! 208: }
1.6 www 209: my $envkey;
1.107 raeburn 210: my %dcroles = ();
211: my $numdc = &check_fordc(\%dcroles,$then);
1.148 albertel 212: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'});
1.10 www 213:
1.6 www 214: # ================================================================== Roles Init
1.118 albertel 215: if ($env{'form.selectrole'}) {
1.188 www 216:
217: my $locknum=&Apache::lonnet::get_locks();
218: if ($locknum) { return 409; }
219:
1.134 www 220: if ($env{'form.newrole'}) {
221: $env{'form.'.$env{'form.newrole'}}=1;
222: }
1.118 albertel 223: if ($env{'request.course.id'}) {
1.185 raeburn 224: # Check if user is CC trying to select a course role
225: if ($env{'form.switchrole'}) {
226: if (!defined($env{'user.role.'.$env{'form.switchrole'}})) {
227: &adhoc_course_role($then);
228: }
229: }
1.118 albertel 230: my %temp=('logout_'.$env{'request.course.id'} => time);
1.33 www 231: &Apache::lonnet::put('email_status',\%temp);
1.118 albertel 232: &Apache::lonnet::delenv('user.state.'.$env{'request.course.id'});
1.100 albertel 233: }
1.186 raeburn 234: &Apache::lonnet::appenv({"request.course.id" => '',
235: "request.course.fn" => '',
236: "request.course.uri" => '',
237: "request.course.sec" => '',
238: "request.role" => 'cm',
239: "request.role.adv" => $env{'user.adv'},
240: "request.role.domain" => $env{'user.domain'}});
1.182 www 241: # Check if user is a DC trying to enter a course or author space and needs privs to be created
1.107 raeburn 242: if ($numdc > 0) {
1.118 albertel 243: foreach my $envkey (keys %env) {
1.182 www 244: # Is this an ad-hoc CC-role?
1.146 raeburn 245: if (my ($domain,$coursenum) =
1.171 albertel 246: ($envkey =~ m-^form\.cc\./($match_domain)/($match_courseid)$-)) {
1.146 raeburn 247: if ($dcroles{$domain}) {
1.218 raeburn 248: &Apache::lonnet::check_adhoc_privs($domain,$coursenum,
249: $then,$now,'cc');
1.182 www 250: }
251: last;
252: }
1.193 raeburn 253: # Is this an ad-hoc CA-role?
1.183 www 254: if (my ($domain,$user) =
255: ($envkey =~ m-^form\.ca\./($match_domain)/($match_username)$-)) {
1.206 raeburn 256: if (($domain eq $env{'user.domain'}) && ($user eq $env{'user.name'})) {
257: delete($env{$envkey});
258: $env{'form.au./'.$domain.'/'} = 1;
259: my ($server_status,$home) = &check_author_homeserver($user,$domain);
260: if ($server_status eq 'switchserver') {
261: my $trolecode = 'au./'.$domain.'/';
262: my $switchserver = '/adm/switchserver?otherserver='.$home.'&role='.$trolecode;
263: $r->internal_redirect($switchserver);
264: }
265: last;
266: }
267: if (my ($castart,$caend) = ($env{'user.role.ca./'.$domain.'/'.$user} =~ /^(\d*)\.(\d*)$/)) {
268: if (((($castart) && ($castart < $now)) || !$castart) &&
269: ((!$caend) || (($caend) && ($caend > $now)))) {
270: my ($server_status,$home) = &check_author_homeserver($user,$domain);
271: if ($server_status eq 'switchserver') {
272: my $trolecode = 'ca./'.$domain.'/'.$user;
273: my $switchserver = '/adm/switchserver?otherserver='.$home.'&role='.$trolecode;
274: $r->internal_redirect($switchserver);
275: }
276: last;
277: }
278: }
279: # Check if author blocked ca-access
1.190 www 280: my %blocked=&Apache::lonnet::get('environment',['domcoord.author'],$domain,$user);
281: if ($blocked{'domcoord.author'} eq 'blocked') {
1.206 raeburn 282: delete($env{$envkey});
283: $env{'user.error.msg'}=':::1:User '.$user.' in domain '.$domain.' blocked domain coordinator access';
284: last;
1.190 www 285: }
1.193 raeburn 286: if ($dcroles{$domain}) {
287: my ($server_status,$home) = &check_author_homeserver($user,$domain);
288: if (($server_status eq 'ok') || ($server_status eq 'switchserver')) {
1.218 raeburn 289: &Apache::lonnet::check_adhoc_privs($domain,$user,$then,
290: $now,'ca');
1.193 raeburn 291: if ($server_status eq 'switchserver') {
292: my $trolecode = 'ca./'.$domain.'/'.$user;
293: my $switchserver = '/adm/switchserver?'
294: .'otherserver='.$home.'&role='.$trolecode;
295: $r->internal_redirect($switchserver);
296: }
297: } else {
298: delete($env{$envkey});
299: }
1.183 www 300: } else {
301: delete($env{$envkey});
1.182 www 302: }
303: last;
304: }
1.107 raeburn 305: }
306: }
307:
1.118 albertel 308: foreach $envkey (keys %env) {
1.40 matthew 309: next if ($envkey!~/^user\.role\./);
1.102 raeburn 310: my ($where,$trolecode,$role,$tstatus,$tend,$tstart);
1.226 ! raeburn 311: &Apache::lonnet::role_status($envkey,$then,$refresh,$now,\$role,\$where,
1.218 raeburn 312: \$trolecode,\$tstatus,\$tstart,\$tend);
1.118 albertel 313: if ($env{'form.'.$trolecode}) {
1.55 albertel 314: if ($tstatus eq 'is') {
315: $where=~s/^\///;
316: my ($cdom,$cnum,$csec)=split(/\//,$where);
1.137 raeburn 317: # check for course groups
318: my %coursegroups = &Apache::lonnet::get_active_groups(
319: $env{'user.domain'},$env{'user.name'},$cdom, $cnum);
320: my $cgrps = join(':',keys(%coursegroups));
321:
1.111 albertel 322: # store role if recent_role list being kept
1.118 albertel 323: if ($env{'environment.recentroles'}) {
1.158 albertel 324: my %frozen_roles =
325: &Apache::lonhtmlcommon::get_recent_frozen('roles',$env{'environment.recentrolesn'});
1.111 albertel 326: &Apache::lonhtmlcommon::store_recent('roles',
1.158 albertel 327: $trolecode,' ',$frozen_roles{$trolecode});
1.111 albertel 328: }
329:
330:
1.53 www 331: # check for keyed access
1.55 albertel 332: if (($role eq 'st') &&
1.118 albertel 333: ($env{'course.'.$cdom.'_'.$cnum.'.keyaccess'} eq 'yes')) {
1.89 www 334: # who is key authority?
335: my $authdom=$cdom;
336: my $authnum=$cnum;
1.118 albertel 337: if ($env{'course.'.$cdom.'_'.$cnum.'.keyauth'}) {
1.89 www 338: ($authnum,$authdom)=
1.172 albertel 339: split(/:/,$env{'course.'.$cdom.'_'.$cnum.'.keyauth'});
1.89 www 340: }
341: # check with key authority
342: unless (&Apache::lonnet::validate_access_key(
1.118 albertel 343: $env{'environment.key.'.$cdom.'_'.$cnum},
1.89 www 344: $authdom,$authnum)) {
1.53 www 345: # there is no valid key
1.118 albertel 346: if ($env{'form.newkey'}) {
1.53 www 347: # student attempts to register a new key
1.89 www 348: &Apache::loncommon::content_type($r,'text/html');
349: &Apache::loncommon::no_cache($r);
350: $r->send_http_header;
351: my $swinfo=&Apache::lonmenu::rawconfig();
1.147 albertel 352: my $start_page=&Apache::loncommon::start_page
1.89 www 353: ('Verifying Access Key to Unlock this Course');
1.147 albertel 354: my $end_page=&Apache::loncommon::end_page();
1.90 www 355: my $buttontext=&mt('Enter Course');
356: my $message=&mt('Successfully registered key');
357: my $assignresult=
358: &Apache::lonnet::assign_access_key(
1.118 albertel 359: $env{'form.newkey'},
1.90 www 360: $authdom,$authnum,
1.91 www 361: $cdom,$cnum,
1.118 albertel 362: $env{'user.domain'},
363: $env{'user.name'},
1.204 bisitz 364: &mt('Assigned from [_1] at [_2] for [_3]'
365: ,$ENV{'REMOTE_ADDR'}
366: ,&Apache::lonlocal::locallocaltime()
367: ,$trolecode)
368: );
1.90 www 369: unless ($assignresult eq 'ok') {
370: $assignresult=~s/^error\:\s*//;
371: $message=&mt($assignresult).
372: '<br /><a href="/adm/logout">'.
1.89 www 373: &mt('Logout').'</a>';
1.90 www 374: $buttontext=&mt('Re-Enter Key');
375: }
1.89 www 376: $r->print(<<ENDENTEREDKEY);
1.147 albertel 377: $start_page
1.179 raeburn 378: <script type="text/javascript">
1.225 bisitz 379: // <![CDATA[
1.89 www 380: $swinfo
1.225 bisitz 381: // ]]>
1.89 www 382: </script>
1.225 bisitz 383: <form action="" method="post">
1.89 www 384: <input type="hidden" name="selectrole" value="1" />
385: <input type="hidden" name="$trolecode" value="1" />
1.211 tempelho 386: <span class="LC_fontsize_large">$message</span><br />
1.89 www 387: <input type="submit" value="$buttontext" />
388: </form>
1.147 albertel 389: $end_page
1.89 www 390: ENDENTEREDKEY
391: return OK;
1.55 albertel 392: } else {
1.53 www 393: # print form to enter a new key
1.73 www 394: &Apache::loncommon::content_type($r,'text/html');
1.55 albertel 395: &Apache::loncommon::no_cache($r);
396: $r->send_http_header;
397: my $swinfo=&Apache::lonmenu::rawconfig();
1.147 albertel 398: my $start_page=&Apache::loncommon::start_page
1.55 albertel 399: ('Enter Access Key to Unlock this Course');
1.147 albertel 400: my $end_page=&Apache::loncommon::end_page();
1.55 albertel 401: $r->print(<<ENDENTERKEY);
1.147 albertel 402: $start_page
1.179 raeburn 403: <script type="text/javascript">
1.225 bisitz 404: // <![CDATA[
1.53 www 405: $swinfo
1.225 bisitz 406: // ]]>
1.53 www 407: </script>
1.225 bisitz 408: <form action="" method="post">
1.89 www 409: <input type="hidden" name="selectrole" value="1" />
410: <input type="hidden" name="$trolecode" value="1" />
1.118 albertel 411: <input type="text" size="20" name="newkey" value="$env{'form.newkey'}" />
1.53 www 412: <input type="submit" value="Enter key" />
413: </form>
1.147 albertel 414: $end_page
1.53 www 415: ENDENTERKEY
1.55 albertel 416: return OK;
417: }
418: }
419: }
1.118 albertel 420: &Apache::lonnet::log($env{'user.domain'},
421: $env{'user.name'},
422: $env{'user.home'},
1.87 www 423: "Role ".$trolecode);
1.101 albertel 424:
1.56 www 425: &Apache::lonnet::appenv(
1.186 raeburn 426: {'request.role' => $trolecode,
427: 'request.role.domain' => $cdom,
428: 'request.course.sec' => $csec,
429: 'request.course.groups' => $cgrps});
1.101 albertel 430: my $tadv=0;
1.62 matthew 431:
1.125 www 432: if (($cnum) && ($role ne 'ca') && ($role ne 'aa')) {
1.152 raeburn 433: my $msg;
1.55 albertel 434: my ($furl,$ferr)=
435: &Apache::lonuserstate::readmap($cdom.'/'.$cnum);
1.118 albertel 436: if (($env{'form.orgurl'}) &&
437: ($env{'form.orgurl'}!~/^\/adm\/flip/)) {
438: my $dest=$env{'form.orgurl'};
1.219 raeburn 439: if ($env{'form.symb'}) {
440: if ($dest =~ /\?/) {
441: $dest .= '&';
442: } else {
443: $dest .= '?'
444: }
445: $dest .= 'symb='.$env{'form.symb'};
446: }
1.117 albertel 447: if (&Apache::lonnet::allowed('adv') eq 'F') { $tadv=1; }
1.186 raeburn 448: &Apache::lonnet::appenv({'request.role.adv'=>$tadv});
1.150 www 449: if (($ferr) && ($tadv)) {
450: &error_page($r,$ferr,$dest);
451: } else {
452: $r->internal_redirect($dest);
453: }
1.55 albertel 454: return OK;
455: } else {
1.155 albertel 456: if (!$env{'request.course.id'}) {
1.55 albertel 457: &Apache::lonnet::appenv(
1.186 raeburn 458: {"request.course.id" => $cdom.'_'.$cnum});
1.61 www 459: $furl='/adm/roles?tryagain=1';
1.221 bisitz 460: $msg='<p><span class="LC_error">'
461: .&mt('Could not initialize [_1] at this time.',
462: $env{'course.'.$cdom.'_'.$cnum.'.description'})
463: .'</span></p>'
464: .'<p>'.&mt('Please try again.').'</p>'
465: .'<p>'.$ferr.'</p>';
1.55 albertel 466: }
1.117 albertel 467: if (&Apache::lonnet::allowed('adv') eq 'F') { $tadv=1; }
1.186 raeburn 468: &Apache::lonnet::appenv({'request.role.adv'=>$tadv});
1.152 raeburn 469:
1.150 www 470: if (($ferr) && ($tadv)) {
471: &error_page($r,$ferr,$furl);
472: } else {
473: # Check to see if the user is a CC entering a course
474: # for the first time
475: my (undef, undef, $role, $courseid) = split(/\./, $envkey);
476: if (substr($courseid, 0, 1) eq '/') {
477: $courseid = substr($courseid, 1);
478: }
479: $courseid =~ s/\//_/;
480: if ($role eq 'cc' && $env{'course.' . $courseid .
481: '.course.helper.not.run'}) {
482: $furl = "/adm/helper/course.initialization.helper";
483: # Send the user to the course they selected
484: } elsif ($env{'request.course.id'}) {
1.185 raeburn 485: if ($env{'form.destinationurl'}) {
486: my $dest = $env{'form.destinationurl'};
1.203 raeburn 487: if ($env{'form.destsymb'} ne '') {
488: my $esc_symb = &HTML::Entities::encode($env{'form.destsymb'},'"<>&');
489: $dest .= '?symb='.$esc_symb;
490: }
1.185 raeburn 491: &redirect_user($r,&mt('Entering [_1]',
492: $env{'course.'.$courseid.'.description'}),
493: $dest,$msg,
494: $env{'environment.remotenavmap'});
495: return OK;
496: }
1.150 www 497: if (&Apache::lonnet::allowed('whn',
498: $env{'request.course.id'})
499: || &Apache::lonnet::allowed('whn',
500: $env{'request.course.id'}.'/'
501: .$env{'request.course.sec'})
502: ) {
503: my $startpage = &courseloadpage($courseid);
504: unless ($startpage eq 'firstres') {
1.204 bisitz 505: $msg = &mt('Entering [_1] ...',
1.162 albertel 506: $env{'course.'.$courseid.'.description'});
1.150 www 507: &redirect_user($r,&mt('New in course'),
508: '/adm/whatsnew?refpage=start',$msg,
509: $env{'environment.remotenavmap'});
510: return OK;
511: }
512: }
513: }
1.151 www 514: # Are we allowed to look at the first resource?
1.169 albertel 515: if ($furl !~ m|^/adm/|) {
1.151 www 516: # Guess not ...
517: $furl=&Apache::lonpageflip::first_accessible_resource();
518: }
1.162 albertel 519: $msg = &mt('Entering [_1] ...',
520: $env{'course.'.$courseid.'.description'});
521: &redirect_user($r,&mt('Entering [_1]',
522: $env{'course.'.$courseid.'.description'}),
1.150 www 523: $furl,$msg,
524: $env{'environment.remotenavmap'});
1.58 bowersj2 525: }
1.124 albertel 526: return OK;
1.55 albertel 527: }
528: }
1.62 matthew 529: #
530: # Send the user to the construction space they selected
1.125 www 531: if ($role =~ /^(au|ca|aa)$/) {
1.62 matthew 532: my $redirect_url = '/priv/';
533: if ($role eq 'au') {
1.118 albertel 534: $redirect_url.=$env{'user.name'};
1.62 matthew 535: } else {
536: $where =~ /\/(.*)$/;
537: $redirect_url .= $1;
538: }
539: $redirect_url .= '/';
1.78 sakharuk 540: &redirect_user($r,&mt('Entering Construction Space'),
1.62 matthew 541: $redirect_url);
542: return OK;
543: }
1.104 raeburn 544: if ($role eq 'dc') {
1.108 raeburn 545: my $redirect_url = '/adm/menu/';
546: &redirect_user($r,&mt('Loading Domain Coordinator Menu'),
1.104 raeburn 547: $redirect_url);
1.108 raeburn 548: return OK;
1.104 raeburn 549: }
1.220 raeburn 550: if ($role eq 'sc') {
551: my $redirect_url = '/adm/grades?command=scantronupload';
552: &redirect_user($r,&mt('Loading Data Upload Page'),
553: $redirect_url);
554: return OK;
555: }
1.55 albertel 556: }
557: }
1.6 www 558: }
1.40 matthew 559: }
1.44 www 560:
1.10 www 561:
1.6 www 562: # =============================================================== No Roles Init
1.10 www 563:
1.73 www 564: &Apache::loncommon::content_type($r,'text/html');
1.30 albertel 565: &Apache::loncommon::no_cache($r);
1.10 www 566: $r->send_http_header;
567: return OK if $r->header_only;
568:
1.224 raeburn 569: my $crumbtext = 'User Roles';
570: my $pagetitle = 'My Roles';
571: my $recent = &mt('Recent Roles');
572: my $show_course=&Apache::loncommon::show_course();
573: if ($show_course) {
574: $crumbtext = 'Courses';
575: $pagetitle = 'My Courses';
576: $recent = &mt('Recent Courses');
577: }
578: my $brcrum =[{href=>"/adm/roles",text=>$crumbtext}];
1.52 www 579: my $swinfo=&Apache::lonmenu::rawconfig();
1.224 raeburn 580: my $start_page=&Apache::loncommon::start_page($pagetitle,undef,{bread_crumbs=>$brcrum});
1.134 www 581: my $standby=&mt('Role selected. Please stand by.');
1.135 albertel 582: $standby=~s/\n/\\n/g;
1.184 raeburn 583: 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 />';
1.163 www 584:
1.10 www 585: $r->print(<<ENDHEADER);
1.147 albertel 586: $start_page
1.163 www 587: <br />
1.179 raeburn 588: <noscript>
589: $noscript
590: </noscript>
591: <script type="text/javascript">
1.225 bisitz 592: // <![CDATA[
1.26 www 593: $swinfo
594: window.focus();
1.134 www 595:
596: active=true;
597:
598: function enterrole (thisform,rolecode,buttonname) {
599: if (active) {
600: active=false;
601: document.title='$standby';
602: window.status='$standby';
603: thisform.newrole.value=rolecode;
604: thisform.submit();
605: } else {
606: alert('$standby');
607: }
608: }
1.225 bisitz 609: // ]]>
1.26 www 610: </script>
1.10 www 611: ENDHEADER
1.6 www 612:
1.2 www 613: # ------------------------------------------ Get Error Message from Environment
614:
1.118 albertel 615: my ($fn,$priv,$nochoose,$error,$msg)=split(/:/,$env{'user.error.msg'});
616: if ($env{'user.error.msg'}) {
1.55 albertel 617: $r->log_reason(
1.118 albertel 618: "$msg for $env{'user.name'} domain $env{'user.domain'} access $priv",$fn);
1.12 www 619: }
1.1 harris41 620:
1.61 www 621: # ------------------------------------------------- Can this user re-init, etc?
1.6 www 622:
1.118 albertel 623: my $advanced=$env{'user.adv'};
1.61 www 624: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['tryagain']);
1.118 albertel 625: my $tryagain=$env{'form.tryagain'};
1.209 raeburn 626: my $reinit=$env{'user.reinit'};
627: delete $env{'user.reinit'};
1.6 www 628:
1.2 www 629: # -------------------------------------------------------- Generate Page Output
1.6 www 630: # --------------------------------------------------------------- Error Header?
1.2 www 631: if ($error) {
1.187 bisitz 632: $r->print("<h1>".&mt('LON-CAPA Access Control')."</h1>");
1.174 albertel 633: $r->print("<!-- LONCAPAACCESSCONTROLERRORSCREEN --><hr /><pre>");
634: if ($priv ne '') {
1.187 bisitz 635: $r->print(&mt('Access : ').&Apache::lonnet::plaintext($priv)."\n");
1.174 albertel 636: }
637: if ($fn ne '') {
1.187 bisitz 638: $r->print(&mt('Resource: ').&Apache::lonenc::check_encrypt($fn)."\n");
1.174 albertel 639: }
640: if ($msg ne '') {
1.187 bisitz 641: $r->print(&mt('Action : ').$msg."\n");
1.174 albertel 642: }
643: $r->print("</pre><hr />");
1.120 albertel 644: my $url=$fn;
645: my $last;
646: if (tie(my %hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
647: &GDBM_READER(),0640)) {
648: $last=$hash{'last_known'};
649: untie(%hash);
650: }
1.149 www 651: if ($last) { $fn.='?symb='.&escape($last); }
1.120 albertel 652:
653: &Apache::londocs::changewarning($r,undef,'You have modified your course recently, [_1] may fix this access problem.',
654: &Apache::lonenc::check_encrypt($fn));
1.2 www 655: } else {
1.118 albertel 656: if ($env{'user.error.msg'}) {
1.209 raeburn 657: if ($reinit) {
658: $r->print(
659: '<h3><span class="LC_error">'.
660: &mt('As your session file for the course has expired, you will need to re-select the course.').'</span></h3>');
661: } else {
662: $r->print(
1.157 albertel 663: '<h3><span class="LC_error">'.
664: &mt('You need to choose another user role or enter a specific course for this function').'</span></h3>');
1.209 raeburn 665: }
666: }
1.2 www 667: }
1.6 www 668: # -------------------------------------------------------- Choice or no choice?
1.2 www 669: if ($nochoose) {
1.177 www 670: $r->print("<h2>".&mt('Sorry ...')."</h2>\n<span class='LC_error'>".
671: &mt('This action is currently not authorized.').'</span>'.
1.150 www 672: &Apache::loncommon::end_page());
673: return OK;
1.6 www 674: } else {
1.18 www 675: if (($ENV{'REDIRECT_QUERY_STRING'}) && ($fn)) {
676: $fn.='?'.$ENV{'REDIRECT_QUERY_STRING'};
1.6 www 677: }
1.84 www 678: $r->print('<form method="post" name="rolechoice" action="'.(($fn)?$fn:$r->uri).'">');
1.116 albertel 679: $r->print('<input type="hidden" name="orgurl" value="'.$fn.'" />');
680: $r->print('<input type="hidden" name="selectrole" value="1" />');
1.134 www 681: $r->print('<input type="hidden" name="newrole" value="" />');
1.6 www 682: }
1.226 ! raeburn 683:
! 684: my (%roletext,%sortrole,%roleclass,%futureroles,%timezones);
! 685: my ($countactive,$countfuture,$inrole,$possiblerole) =
! 686: &gather_roles($then,$refresh,$now,$reinit,$nochoose,\%roletext,\%sortrole,\%roleclass,
! 687: \%futureroles,\%timezones);
! 688:
! 689: $refresh = $now;
! 690: &Apache::lonnet::appenv({'user.refresh.time' => $refresh});
1.196 raeburn 691: if ($env{'user.adv'}) {
692: $r->print(
1.212 bisitz 693: '<p><label>'.&mt('Show all roles').': <input type="checkbox" name="showall"');
1.196 raeburn 694: if ($env{'form.showall'}) { $r->print(' checked="checked" '); }
1.212 bisitz 695: $r->print(' /></label><input type="submit" value="'.&mt('Display').'" /></p>');
1.196 raeburn 696: } else {
697: if ($countactive > 0) {
1.216 raeburn 698: &queued_selfenrollment($r);
1.196 raeburn 699: my $domdesc = &Apache::lonnet::domain($env{'user.domain'},'description');
1.201 raeburn 700: my $esc_dom = &HTML::Entities::encode($env{'user.domain'},'"<>&');
701: $r->print('<p>'.&mt('[_1]Visit the [_2]Course Catalog[_3] to view all [_4] LON-CAPA courses.','<b>','<a href="/adm/coursecatalog?showdom='.$esc_dom.'">','</a></b>',$domdesc).'<br />'.&mt('If a course is [_1]not[_2] in your list of current courses below, you may be able to enroll if self-enrollment is permitted.','<b>','</b>').'</p>');
1.196 raeburn 702: }
703: }
704:
1.84 www 705: # No active roles
706: if ($countactive==0) {
707: if ($inrole) {
708: $r->print('<h2>'.&mt('Currently no additional roles or courses').'</h2>');
709: } else {
710: $r->print('<h2>'.&mt('Currently no active roles or courses').'</h2>');
711: }
1.191 raeburn 712: &findcourse_advice($r);
713: $r->print('</form>');
714: if ($countfuture) {
715: $r->print(&mt('The following [quant,_1,role,roles] will become active in the future:',$countfuture));
716: my $doheaders = &roletable_headers($r,\%roleclass,\%sortrole,
717: $nochoose);
718: &print_rolerows($r,$doheaders,\%roleclass,\%sortrole,\%dcroles,
719: \%roletext);
720: my $tremark='';
1.212 bisitz 721: my $tbg;
1.191 raeburn 722: if ($env{'request.role'} eq 'cm') {
1.212 bisitz 723: $tbg="LC_roles_selected";
1.204 bisitz 724: $tremark=&mt('Currently selected.').' ';
1.191 raeburn 725: } else {
1.212 bisitz 726: $tbg="LC_roles_is";
1.191 raeburn 727: }
1.212 bisitz 728: $r->print(&Apache::loncommon::start_data_table_row()
729: .'<td class="'.$tbg.'"> </td>'
730: .'<td colspan="3">'
731: .&mt('No role specified')
732: .'</td>'
733: .'<td>'.$tremark.' </td>'
734: .&Apache::loncommon::end_data_table_row()
735: );
1.191 raeburn 736:
1.212 bisitz 737: $r->print(&Apache::loncommon::end_data_table());
1.191 raeburn 738: }
739: $r->print(&Apache::loncommon::end_page());
1.84 www 740: return OK;
741: }
742: # ----------------------------------------------------------------------- Table
1.224 raeburn 743: unless ((!&Apache::loncommon::show_course()) || ($nochoose) || ($countactive==1)) {
1.173 albertel 744: $r->print("<h2>".&mt('Select a Course to Enter')."</h2>\n");
1.84 www 745: }
1.191 raeburn 746: my $doheaders = &roletable_headers($r,\%roleclass,\%sortrole,$nochoose);
1.118 albertel 747: if ($env{'environment.recentroles'}) {
1.111 albertel 748: my %recent_roles =
1.118 albertel 749: &Apache::lonhtmlcommon::get_recent('roles',$env{'environment.recentrolesn'});
1.111 albertel 750: my $output='';
751: foreach (sort(keys(%recent_roles))) {
1.223 raeburn 752: if (ref($roletext{'user.role.'.$_}) eq 'ARRAY') {
753: $output.= &Apache::loncommon::start_data_table_row().
754: $roletext{'user.role.'.$_}->[0].
755: &Apache::loncommon::end_data_table_row().
756: &Apache::loncommon::continue_data_table_row().
757: $roletext{'user.role.'.$_}->[1].
758: &Apache::loncommon::end_data_table_row();
1.170 albertel 759: if ($_ =~ m-dc\./($match_domain)/-
760: && $dcroles{$1}) {
1.192 raeburn 761: $output .= &adhoc_roles_row($1,'recent');
1.133 albertel 762: }
1.113 raeburn 763: } elsif ($numdc > 0) {
764: unless ($_ =~/^error\:/) {
765: $output.=&display_cc_role('user.role.'.$_);
766: }
767: }
1.111 albertel 768: }
769: if ($output) {
1.212 bisitz 770: $r->print(&Apache::loncommon::start_data_table_empty_row()
771: .'<td align="center" colspan="5">'
1.224 raeburn 772: .$recent
1.212 bisitz 773: .'</td>'
774: .&Apache::loncommon::end_data_table_empty_row()
775: );
1.111 albertel 776: $r->print($output);
1.114 raeburn 777: $doheaders ++;
1.111 albertel 778: }
779: }
780:
1.104 raeburn 781: if ($numdc > 0) {
1.112 raeburn 782: $r->print(&coursepick_jscript());
1.193 raeburn 783: $r->print(&Apache::loncommon::coursebrowser_javascript().
784: &Apache::loncommon::authorbrowser_javascript());
1.108 raeburn 785: }
1.191 raeburn 786: &print_rolerows($r,$doheaders,\%roleclass,\%sortrole,\%dcroles,\%roletext);
1.202 raeburn 787: if ($countactive > 1) {
788: my $tremark='';
1.212 bisitz 789: my $tbg;
1.202 raeburn 790: if ($env{'request.role'} eq 'cm') {
1.212 bisitz 791: $tbg="LC_roles_selected";
1.204 bisitz 792: $tremark=&mt('Currently selected.').' ';
1.202 raeburn 793: } else {
1.212 bisitz 794: $tbg="LC_roles_is";
1.202 raeburn 795: }
1.212 bisitz 796: $r->print(&Apache::loncommon::start_data_table_row());
1.202 raeburn 797: unless ($nochoose) {
798: if ($env{'request.role'} ne 'cm') {
1.212 bisitz 799: $r->print('<td class="'.$tbg.'"><input type="submit" value="'.
1.202 raeburn 800: &mt('Select').'" name="cm" /></td>');
801: } else {
1.212 bisitz 802: $r->print('<td class="'.$tbg.'"> </td>');
1.202 raeburn 803: }
804: }
1.212 bisitz 805: $r->print('<td colspan="3">'
806: .&mt('No role specified')
807: .'</td>'
808: .'<td>'.$tremark.' </td>'
809: .&Apache::loncommon::end_data_table_row()
810: );
1.202 raeburn 811: }
1.212 bisitz 812: $r->print(&Apache::loncommon::end_data_table());
1.4 www 813: unless ($nochoose) {
814: $r->print("</form>\n");
815: }
1.22 harris41 816: # ------------------------------------------------------------ Privileges Info
1.118 albertel 817: if (($advanced) && (($env{'user.error.msg'}) || ($error))) {
1.212 bisitz 818: $r->print('<hr /><h2>'.&mt('Current Privileges').'</h2>');
1.175 albertel 819: $r->print(&privileges_info());
1.4 www 820: }
1.66 www 821: $r->print(&Apache::lonnet::getannounce());
1.65 www 822: if ($advanced) {
1.201 raeburn 823: my $esc_dom = &HTML::Entities::encode($env{'user.domain'},'"<>&');
1.195 bisitz 824: $r->print('<p><small><i>'
825: .&mt('This is LON-CAPA [_1]',$r->dir_config('lonVersion'))
826: .'</i><br />'
1.197 raeburn 827: .'<a href="/adm/logout">'.&mt('Logout').'</a> '
1.201 raeburn 828: .'<a href="/adm/coursecatalog?showdom='.$esc_dom.'">'
829: .&mt('Course Catalog')
1.225 bisitz 830: .'</a></small></p>');
1.65 www 831: }
1.147 albertel 832: $r->print(&Apache::loncommon::end_page());
1.1 harris41 833: return OK;
1.102 raeburn 834: }
835:
1.226 ! raeburn 836: sub gather_roles {
! 837: my ($then,$refresh,$now,$reinit,$nochoose,$roletext,$sortrole,$roleclass,$futureroles,$timezones) = @_;
! 838: my ($countactive,$countfuture,$inrole,$possiblerole) = (0,0,0,'');
! 839: my $advanced = $env{'user.adv'};
! 840: my $tryagain = $env{'form.tryagain'};
! 841: foreach my $envkey (sort(keys(%env))) {
! 842: my $button = 1;
! 843: my $switchserver='';
! 844: my ($role_text,$role_text_end,$sortkey);
! 845: if ($envkey=~/^user\.role\./) {
! 846: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend);
! 847: &Apache::lonnet::role_status($envkey,$then,$refresh,$now,\$role,\$where,
! 848: \$trolecode,\$tstatus,\$tstart,\$tend);
! 849: next if (!defined($role) || $role eq '' || $role =~ /^gr/);
! 850: my $timezone = &role_timezone($where,$timezones);
! 851: $tremark='';
! 852: $tpstart=' ';
! 853: $tpend=' ';
! 854: if ($tstart) {
! 855: $tpstart=&Apache::lonlocal::locallocaltime($tstart,$timezone);
! 856: }
! 857: if ($tend) {
! 858: $tpend=&Apache::lonlocal::locallocaltime($tend,$timezone);
! 859: }
! 860: if ($env{'request.role'} eq $trolecode) {
! 861: $tstatus='selected';
! 862: }
! 863: my $tbg;
! 864: if (($tstatus eq 'is')
! 865: || ($tstatus eq 'selected')
! 866: || ($tstatus eq 'future')
! 867: || ($env{'form.showall'})) {
! 868: if ($tstatus eq 'is') {
! 869: $tbg='LC_roles_is';
! 870: $possiblerole=$trolecode;
! 871: $countactive++;
! 872: } elsif ($tstatus eq 'future') {
! 873: $tbg='LC_roles_future';
! 874: $button=0;
! 875: $futureroles->{$trolecode} = $tstart.':'.$tend;
! 876: $countfuture ++;
! 877: } elsif ($tstatus eq 'expired') {
! 878: $tbg='LC_roles_expired';
! 879: $button=0;
! 880: } elsif ($tstatus eq 'will_not') {
! 881: $tbg='LC_roles_will_not';
! 882: $tremark.=&mt('Expired after logout.').' ';
! 883: } elsif ($tstatus eq 'selected') {
! 884: $tbg='LC_roles_selected';
! 885: $inrole=1;
! 886: $countactive++;
! 887: $tremark.=&mt('Currently selected.').' ';
! 888: }
! 889: my $trole;
! 890: if ($role =~ /^cr\//) {
! 891: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$role);
! 892: if ($tremark) { $tremark.='<br />'; }
! 893: $tremark.=&mt('Defined by [_1] at [_2].',$rauthor,$rdomain);
! 894: }
! 895: $trole=Apache::lonnet::plaintext($role);
! 896: my $ttype;
! 897: my $twhere;
! 898: my ($tdom,$trest,$tsection)=
! 899: split(/\//,Apache::lonnet::declutter($where));
! 900: # First, Co-Authorship roles
! 901: if (($role eq 'ca') || ($role eq 'aa')) {
! 902: my $home = &Apache::lonnet::homeserver($trest,$tdom);
! 903: my $allowed=0;
! 904: my @ids=&Apache::lonnet::current_machine_ids();
! 905: foreach my $id (@ids) { if ($id eq $home) { $allowed=1; } }
! 906: if (!$allowed) {
! 907: $button=0;
! 908: $switchserver='otherserver='.$home.'&role='.$trolecode;
! 909: }
! 910: #next if ($home eq 'no_host');
! 911: $home = &Apache::lonnet::hostname($home);
! 912: $ttype='Construction Space';
! 913: $twhere=&mt('User').': '.$trest.'<br />'.&mt('Domain').
! 914: ': '.$tdom.'<br />'.
! 915: ' '.&mt('Server').': '.$home;
! 916: $env{'course.'.$tdom.'_'.$trest.'.description'}='ca';
! 917: $tremark.=&Apache::lonhtmlcommon::authorbombs('/res/'.$tdom.'/'.$trest.'/');
! 918: $sortkey=$role."$trest:$tdom";
! 919: } elsif ($role eq 'au') {
! 920: # Authors
! 921: my $home = &Apache::lonnet::homeserver
! 922: ($env{'user.name'},$env{'user.domain'});
! 923: my $allowed=0;
! 924: my @ids=&Apache::lonnet::current_machine_ids();
! 925: foreach my $id (@ids) { if ($id eq $home) { $allowed=1; } }
! 926: if (!$allowed) {
! 927: $button=0;
! 928: $switchserver='otherserver='.$home.'&role='.$trolecode;
! 929: }
! 930: #next if ($home eq 'no_host');
! 931: $home = &Apache::lonnet::hostname($home);
! 932: $ttype='Construction Space';
! 933: $twhere=&mt('Domain').': '.$tdom.'<br />'.&mt('Server').
! 934: ': '.$home;
! 935: $env{'course.'.$tdom.'_'.$trest.'.description'}='ca';
! 936: $tremark.=&Apache::lonhtmlcommon::authorbombs('/res/'.$tdom.'/'.$env{'user.name'}.'/');
! 937: $sortkey=$role;
! 938: } elsif ($trest) {
! 939: my $tcourseid=$tdom.'_'.$trest;
! 940: $ttype = &Apache::loncommon::course_type($tcourseid);
! 941: $trole = &Apache::lonnet::plaintext($role,$ttype);
! 942: if ($env{'course.'.$tcourseid.'.description'}) {
! 943: $twhere=$env{'course.'.$tcourseid.'.description'};
! 944: $sortkey=$role."\0".$tdom."\0".$twhere."\0".$envkey;
! 945: unless ($twhere eq &mt('Currently not available')) {
! 946: $twhere.=' <span class="LC_fontsize_small">'.
! 947: &Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$trest,$tdom).
! 948: '</span>';
! 949: }
! 950: } else {
! 951: my %newhash=&Apache::lonnet::coursedescription($tcourseid);
! 952: if (%newhash) {
! 953: $sortkey=$role."\0".$tdom."\0".$newhash{'description'}.
! 954: "\0".$envkey;
! 955: $twhere=$newhash{'description'}.
! 956: ' <span class="LC_fontsize_small">'.
! 957: &Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$trest,$tdom).
! 958: '</span>';
! 959: $ttype = $newhash{'type'};
! 960: $trole = &Apache::lonnet::plaintext($role,$ttype);
! 961: } else {
! 962: $twhere=&mt('Currently not available');
! 963: $env{'course.'.$tcourseid.'.description'}=$twhere;
! 964: $sortkey=$role."\0".$tdom."\0".$twhere."\0".$envkey;
! 965: $ttype = 'Unavailable';
! 966: }
! 967: }
! 968: if ($tsection) {
! 969: $twhere.='<br />'.&mt('Section').': '.$tsection;
! 970: }
! 971: if ($role ne 'st') { $twhere.="<br />".&mt('Domain').":".$tdom; }
! 972: } elsif ($tdom) {
! 973: $ttype='Domain';
! 974: $twhere=$tdom;
! 975: $sortkey=$role.$twhere;
! 976: } else {
! 977: $ttype='System';
! 978: $twhere=&mt('system wide');
! 979: $sortkey=$role.$twhere;
! 980: }
! 981: ($role_text,$role_text_end) =
! 982: &build_roletext($trolecode,$tdom,$trest,$tstatus,$tryagain,
! 983: $advanced,$tremark,$tbg,$trole,$twhere,$tpstart,
! 984: $tpend,$nochoose,$button,$switchserver,$reinit);
! 985: $roletext->{$envkey}=[$role_text,$role_text_end];
! 986: if (!$sortkey) {$sortkey=$twhere."\0".$envkey;}
! 987: $sortrole->{$sortkey}=$envkey;
! 988: $roleclass->{$envkey}=$ttype;
! 989: }
! 990: }
! 991: }
! 992: return ($countactive,$countfuture,$inrole,$possiblerole);
! 993: }
! 994:
1.215 raeburn 995: sub role_timezone {
996: my ($where,$timezones) = @_;
997: my $timezone;
998: if (ref($timezones) eq 'HASH') {
999: if ($where =~ m{^/($match_domain)/($match_courseid)}) {
1000: my $cdom = $1;
1001: my $cnum = $2;
1002: if ($cdom && $cnum) {
1003: if (!exists($timezones->{$cdom.'_'.$cnum})) {
1004: my %timehash =
1005: &Apache::lonnet::get('environment',['timezone'],$cdom,$cnum);
1006: if ($timehash{'timezone'} eq '') {
1007: if (!exists($timezones->{$cdom})) {
1008: my %domdefaults =
1009: &Apache::lonnet::get_domain_defaults($cdom);
1010: if ($domdefaults{'timezone_def'} eq '') {
1011: $timezones->{$cdom} = 'local';
1012: } else {
1013: $timezones->{$cdom} = $domdefaults{'timezone_def'};
1014: }
1015: }
1016: $timezones->{$cdom.'_'.$cnum} = $timezones->{$cdom};
1017: } else {
1018: $timezones->{$cdom.'_'.$cnum} =
1019: &Apache::lonlocal::gettimezone($timehash{'timezone'});
1020: }
1021: }
1022: $timezone = $timezones->{$cdom.'_'.$cnum};
1023: }
1024: } else {
1025: my ($tdom) = ($where =~ m{^/($match_domain)});
1026: if ($tdom) {
1027: if (!exists($timezones->{$tdom})) {
1028: my %domdefaults = &Apache::lonnet::get_domain_defaults($tdom);
1029: if ($domdefaults{'timezone_def'} eq '') {
1030: $timezones->{$tdom} = 'local';
1031: } else {
1032: $timezones->{$tdom} = $domdefaults{'timezone_def'};
1033: }
1034: }
1035: $timezone = $timezones->{$tdom};
1036: }
1037: }
1038: if ($timezone eq 'local') {
1039: $timezone = undef;
1040: }
1041: }
1042: return $timezone;
1043: }
1044:
1.191 raeburn 1045: sub roletable_headers {
1046: my ($r,$roleclass,$sortrole,$nochoose) = @_;
1047: my $doheaders;
1048: if ((ref($sortrole) eq 'HASH') && (ref($roleclass) eq 'HASH')) {
1.212 bisitz 1049: $r->print('<br />'
1050: .&Apache::loncommon::start_data_table()
1051: .&Apache::loncommon::start_data_table_header_row()
1052: );
1.191 raeburn 1053: if (!$nochoose) { $r->print('<th> </th>'); }
1.212 bisitz 1054: $r->print('<th>'.&mt('User Role').'</th>'
1055: .'<th>'.&mt('Extent').'</th>'
1056: .'<th>'.&mt('Start').'</th>'
1057: .'<th>'.&mt('End').'</th>'
1058: .&Apache::loncommon::end_data_table_header_row()
1059: );
1.191 raeburn 1060: $doheaders=-1;
1061: my @roletypes = &roletypes();
1062: foreach my $type (@roletypes) {
1063: my $haverole=0;
1064: foreach my $which (sort {uc($a) cmp uc($b)} (keys(%{$sortrole}))) {
1065: if ($roleclass->{$sortrole->{$which}} =~ /^\Q$type\E/) {
1066: $haverole=1;
1067: }
1068: }
1069: if ($haverole) { $doheaders++; }
1070: }
1071: }
1072: return $doheaders;
1073: }
1074:
1075: sub roletypes {
1076: my @types = ('Domain','Construction Space','Course','Unavailable','System');
1077: return @types;
1078: }
1079:
1080: sub print_rolerows {
1081: my ($r,$doheaders,$roleclass,$sortrole,$dcroles,$roletext) = @_;
1082: if ((ref($roleclass) eq 'HASH') && (ref($sortrole) eq 'HASH')) {
1083: my @types = &roletypes();
1084: foreach my $type (@types) {
1085: my $output;
1086: foreach my $which (sort {uc($a) cmp uc($b)} (keys(%{$sortrole}))) {
1087: if ($roleclass->{$sortrole->{$which}} =~ /^\Q$type\E/) {
1088: if (ref($roletext) eq 'HASH') {
1.223 raeburn 1089: if (ref($roletext->{$sortrole->{$which}}) eq 'ARRAY') {
1090: $output.= &Apache::loncommon::start_data_table_row().
1091: $roletext->{$sortrole->{$which}}->[0].
1092: &Apache::loncommon::end_data_table_row().
1093: &Apache::loncommon::continue_data_table_row().
1094: $roletext->{$sortrole->{$which}}->[1].
1095: &Apache::loncommon::end_data_table_row();
1096: }
1.191 raeburn 1097: if ($sortrole->{$which} =~ m-dc\./($match_domain)/-) {
1098: if (ref($dcroles) eq 'HASH') {
1099: if ($dcroles->{$1}) {
1.192 raeburn 1100: $output .= &adhoc_roles_row($1,'');
1.191 raeburn 1101: }
1102: }
1103: }
1104: }
1105: }
1106: }
1107: if ($output) {
1108: if ($doheaders > 0) {
1.212 bisitz 1109: $r->print(&Apache::loncommon::start_data_table_empty_row()
1110: .'<td align="center" colspan="5">'
1111: .&mt($type)
1112: .'</td>'
1113: .&Apache::loncommon::end_data_table_empty_row()
1114: );
1.191 raeburn 1115: }
1116: $r->print($output);
1117: }
1118: }
1119: }
1120: }
1121:
1122: sub findcourse_advice {
1123: my ($r) = @_;
1124: my $domdesc = &Apache::lonnet::domain($env{'user.domain'},'description');
1.201 raeburn 1125: my $esc_dom = &HTML::Entities::encode($env{'user.domain'},'"<>&');
1.200 raeburn 1126: if (&Apache::lonnet::auto_run(undef,$env{'user.domain'})) {
1.191 raeburn 1127: $r->print(&mt('If you were expecting to see an active role listed for a particular course in the [_1] domain, it may be missing for one of the following reasons:',$domdesc).'
1128: <ul>
1129: <li>'.&mt('The course has yet to be created.').'</li>
1130: <li>'.&mt('Automatic enrollment of registered students has not been enabled for the course.').'</li>
1131: <li>'.&mt('You are in a section of course for which automatic enrollment in the corresponding LON-CAPA course is not active.').'</li>
1132: <li>'.&mt('The start date for automated enrollment has yet to be reached.').'</li>
1133: <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>
1134: </ul>');
1135: } else {
1136: $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 />');
1137: }
1.201 raeburn 1138: $r->print('<p>'.&mt('The [_1]Course Catalog[_2] provides information about all [_3] classes for which LON-CAPA courses have been created.','<a href="/adm/coursecatalog?showdom='.$esc_dom.'">','</a>',$domdesc).'<br />');
1.191 raeburn 1139: $r->print(&mt('You can search the course catalog for courses which permit self-enrollment, if you would like to enroll in a course.').'</p>');
1.216 raeburn 1140: &queued_selfenrollment($r);
1141: return;
1142: }
1143:
1144: sub queued_selfenrollment {
1145: my ($r) = @_;
1146: my %selfenrollrequests = &Apache::lonnet::dump('selfenrollrequests');
1147: my %reqs_by_date;
1148: foreach my $item (keys(%selfenrollrequests)) {
1149: if (ref($selfenrollrequests{$item}) eq 'HASH') {
1150: if ($selfenrollrequests{$item}{'status'} eq 'request') {
1151: if ($selfenrollrequests{$item}{'timestamp'}) {
1152: push(@{$reqs_by_date{$selfenrollrequests{$item}{'timestamp'}}},$item);
1153: }
1154: }
1155: }
1156: }
1157: if (keys(%reqs_by_date)) {
1158: my $rolename = &Apache::lonnet::plaintext('st');
1159: $r->print('<b>'.&mt('Enrollment requests pending Course Coordinator approval').'</b><br />'.
1160: &Apache::loncommon::start_data_table().
1161: &Apache::loncommon::start_data_table_header_row().
1162: '<th>'.&mt('Date requested').'</th><th>'.&mt('Course title').'</th>'.
1163: '<th>'.&mt('User role').'</th><th>'.&mt('Section').'</th>'.
1164: &Apache::loncommon::end_data_table_header_row());
1165: my @sorted = sort { $a <=> $b } (keys(%reqs_by_date));
1166: foreach my $item (@sorted) {
1167: if (ref($reqs_by_date{$item}) eq 'ARRAY') {
1168: foreach my $crs (@{$reqs_by_date{$item}}) {
1169: my %courseinfo = &Apache::lonnet::coursedescription($crs);
1170: my $usec = $selfenrollrequests{$crs}{'section'};
1171: if ($usec eq '') {
1172: $usec = &mt('No section');
1173: }
1174: $r->print(&Apache::loncommon::start_data_table_row().
1175: '<td>'.&Apache::lonlocal::locallocaltime($item).'</td>'.
1176: '<td>'.$courseinfo{'description'}.'</td>'.
1177: '<td>'.$rolename.'</td><td>'.$usec.'</td>'.
1178: &Apache::loncommon::end_data_table_row());
1179: }
1180: }
1181: }
1182: $r->print(&Apache::loncommon::end_data_table());
1183: }
1.191 raeburn 1184: return;
1185: }
1186:
1.175 albertel 1187: sub privileges_info {
1188: my ($which) = @_;
1189: my $output;
1190:
1191: $which ||= $env{'request.role'};
1192:
1193: foreach my $envkey (sort(keys(%env))) {
1194: next if ($envkey!~/^user\.priv\.\Q$which\E\.(.*)/);
1195:
1196: my $where=$1;
1197: my $ttype;
1198: my $twhere;
1199: my (undef,$tdom,$trest,$tsec)=split(m{/},$where);
1200: if ($trest) {
1201: if ($env{'course.'.$tdom.'_'.$trest.'.description'} eq 'ca') {
1202: $ttype='Construction Space';
1203: $twhere='User: '.$trest.', Domain: '.$tdom;
1204: } else {
1205: $ttype= &Apache::loncommon::course_type($tdom.'_'.$trest);
1206: $twhere=$env{'course.'.$tdom.'_'.$trest.'.description'};
1207: if ($tsec) {
1208: my $sec_type = 'Section';
1209: if (exists($env{"user.role.gr.$where"})) {
1210: $sec_type = 'Group';
1211: }
1212: $twhere.=' ('.$sec_type.': '.$tsec.')';
1213: }
1214: }
1215: } elsif ($tdom) {
1216: $ttype='Domain';
1217: $twhere=$tdom;
1218: } else {
1219: $ttype='System';
1220: $twhere='/';
1221: }
1.204 bisitz 1222: $output .= "\n<h3>".&mt($ttype).': '.$twhere.'</h3>'."\n<ul>";
1.175 albertel 1223: foreach my $priv (sort(split(/:/,$env{$envkey}))) {
1224: next if (!$priv);
1225:
1226: my ($prv,$restr)=split(/\&/,$priv);
1227: my $trestr='';
1228: if ($restr ne 'F') {
1229: $trestr.=' ('.
1230: join(', ',
1231: map { &Apache::lonnet::plaintext($_) }
1232: (split('',$restr))).') ';
1233: }
1234: $output .= "\n\t".
1235: '<li>'.&Apache::lonnet::plaintext($prv).$trestr.'</li>';
1236: }
1237: $output .= "\n".'</ul>';
1238: }
1239: return $output;
1240: }
1241:
1.110 raeburn 1242: sub build_roletext {
1.212 bisitz 1243: my ($trolecode,$tdom,$trest,$tstatus,$tryagain,$advanced,$tremark,$tbg,$trole,$twhere,$tpstart,$tpend,$nochoose,$button,$switchserver,$reinit) = @_;
1.223 raeburn 1244: my ($roletext,$roletext_end);
1.132 albertel 1245: my $is_dc=($trolecode =~ m/^dc\./);
1246: my $rowspan=($is_dc) ? ''
1247: : ' rowspan="2" ';
1248:
1.110 raeburn 1249: unless ($nochoose) {
1.134 www 1250: my $buttonname=$trolecode;
1251: $buttonname=~s/\W//g;
1.110 raeburn 1252: if (!$button) {
1253: if ($switchserver) {
1.212 bisitz 1254: $roletext.='<td'.$rowspan.' class="'.$tbg.'">'
1255: .'<a href="/adm/switchserver?'.$switchserver.'">'
1256: .&mt('Switch Server')
1257: .'</a></td>';
1.110 raeburn 1258: } else {
1.212 bisitz 1259: $roletext.=('<td'.$rowspan.' class="'.$tbg.'"> </td>');
1.110 raeburn 1260: }
1261: } elsif ($tstatus eq 'is') {
1.212 bisitz 1262: $roletext.='<td'.$rowspan.' class="'.$tbg.'">'.
1263: '<input name="'.$buttonname.'" type="button" value="'.
1.225 bisitz 1264: &mt('Select').'" onclick="javascript:enterrole(this.form,\''.
1.192 raeburn 1265: $trolecode."','".$buttonname.'\');" /></td>';
1.110 raeburn 1266: } elsif ($tryagain) {
1267: $roletext.=
1.212 bisitz 1268: '<td'.$rowspan.' class="'.$tbg.'">'.
1269: '<input name="'.$buttonname.'" type="button" value="'.
1.225 bisitz 1270: &mt('Try Selecting Again').'" onclick="javascript:enterrole(this.form,\''.
1.192 raeburn 1271: $trolecode."','".$buttonname.'\');" /></td>';
1.110 raeburn 1272: } elsif ($advanced) {
1273: $roletext.=
1.212 bisitz 1274: '<td'.$rowspan.' class="'.$tbg.'">'.
1275: '<input name="'.$buttonname.'" type="button" value="'.
1.225 bisitz 1276: &mt('Re-Initialize').'" onclick="javascript:enterrole(this.form,\''.
1.192 raeburn 1277: $trolecode."','".$buttonname.'\');" /></td>';
1.209 raeburn 1278: } elsif ($reinit) {
1279: $roletext.=
1.212 bisitz 1280: '<td'.$rowspan.' class="'.$tbg.'">'.
1281: '<input name="'.$buttonname.'" type="button" value="'.
1.225 bisitz 1282: &mt('Re-Select').'" onclick="javascript:enterrole(this.form,\''.
1.209 raeburn 1283: $trolecode."','".$buttonname.'\');" /></td>';
1.110 raeburn 1284: } else {
1.209 raeburn 1285: $roletext.=
1.212 bisitz 1286: '<td'.$rowspan.' class="'.$tbg.'">'.
1287: '<input name="'.$buttonname.'" type="button" value="'.
1.225 bisitz 1288: &mt('Re-Select').'" onclick="javascript:enterrole(this.form,\''.
1.209 raeburn 1289: $trolecode."','".$buttonname.'\');" /></td>';
1.110 raeburn 1290: }
1291: }
1.165 albertel 1292: if ($trolecode !~ m/^(dc|ca|au|aa)\./) {
1293: $tremark.=&Apache::lonannounce::showday(time,1,
1294: &Apache::lonannounce::readcalendar($tdom.'_'.$trest));
1295: }
1.212 bisitz 1296: $roletext.='<td>'.$trole.'</td>'
1297: .'<td>'.$twhere.'</td>'
1298: .'<td>'.$tpstart.'</td>'
1.223 raeburn 1299: .'<td>'.$tpend.'</td>';
1.132 albertel 1300: if (!$is_dc) {
1.223 raeburn 1301: $roletext_end = '<td colspan="4">'.
1302: $tremark.' '.
1303: '</td>';
1.132 albertel 1304: }
1.223 raeburn 1305: return ($roletext,$roletext_end);
1.110 raeburn 1306: }
1307:
1.202 raeburn 1308: sub check_needs_switchserver {
1309: my ($possiblerole) = @_;
1310: my $needs_switchserver;
1311: my ($role,$where) = split(/\./,$possiblerole,2);
1312: my (undef,$tdom,$twho) = split(/\//,$where);
1313: my ($server_status,$home);
1314: if (($role eq 'ca') || ($role eq 'aa')) {
1315: ($server_status,$home) = &check_author_homeserver($twho,$tdom);
1316: } else {
1317: ($server_status,$home) = &check_author_homeserver($env{'user.name'},
1318: $env{'user.domain'});
1319: }
1320: if ($server_status eq 'switchserver') {
1321: $needs_switchserver = 1;
1322: }
1323: return $needs_switchserver;
1324: }
1325:
1.193 raeburn 1326: sub check_author_homeserver {
1.183 www 1327: my ($uname,$udom)=@_;
1.193 raeburn 1328: if (($uname eq '') || ($udom eq '')) {
1329: return ('fail','');
1330: }
1.183 www 1331: my $home = &Apache::lonnet::homeserver($uname,$udom);
1.193 raeburn 1332: if (&Apache::lonnet::host_domain($home) ne $udom) {
1333: return ('fail',$home);
1334: }
1.183 www 1335: my @ids=&Apache::lonnet::current_machine_ids();
1.193 raeburn 1336: if (grep(/^\Q$home\E$/,@ids)) {
1337: return ('ok',$home);
1338: } else {
1339: return ('switchserver',$home);
1.183 www 1340: }
1341: }
1342:
1.104 raeburn 1343: sub check_fordc {
1344: my ($dcroles,$then) = @_;
1345: my $numdc = 0;
1.118 albertel 1346: if ($env{'user.adv'}) {
1347: foreach my $envkey (sort keys %env) {
1.170 albertel 1348: if ($envkey=~/^user\.role\.dc\.\/($match_domain)\/$/) {
1.104 raeburn 1349: my $dcdom = $1;
1350: my $livedc = 1;
1.118 albertel 1351: my ($tstart,$tend)=split(/\./,$env{$envkey});
1.105 raeburn 1352: if ($tstart && $tstart>$then) { $livedc = 0; }
1353: if ($tend && $tend <$then) { $livedc = 0; }
1.104 raeburn 1354: if ($livedc) {
1355: $$dcroles{$dcdom} = $envkey;
1.105 raeburn 1356: $numdc++;
1.104 raeburn 1357: }
1358: }
1359: }
1360: }
1361: return $numdc;
1362: }
1363:
1.185 raeburn 1364: sub adhoc_course_role {
1365: my ($then) = @_;
1366: my ($cdom,$cnum);
1.201 raeburn 1367: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
1368: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
1.185 raeburn 1369: if (&check_forcc($cdom,$cnum,$then)) {
1370: my $setprivs;
1.198 raeburn 1371: if (!defined($env{'user.role.'.$env{'form.switchrole'}})) {
1.185 raeburn 1372: $setprivs = 1;
1373: } else {
1.198 raeburn 1374: my ($start,$end) = split(/\./,$env{'user.role.'.$env{'form.switchrole'}});
1.185 raeburn 1375: if (($start && ($start>$then || $start == -1)) ||
1376: ($end && $end<$then)) {
1377: $setprivs = 1;
1378: }
1379: }
1380: if ($setprivs) {
1.198 raeburn 1381: if ($env{'form.switchrole'} =~ m-^(in|ta|ep|ad|st|cr)([\w/]*)\./\Q$cdom\E/\Q$cnum\E/?(\w*)$-) {
1.185 raeburn 1382: my $role = $1;
1383: my $custom_role = $2;
1384: my $usec = $3;
1385: if ($role eq 'cr') {
1.199 raeburn 1386: if ($custom_role =~ m-^/$match_domain/$match_username/\w+$-) {
1.185 raeburn 1387: $role .= $custom_role;
1388: } else {
1389: return;
1390: }
1391: }
1.208 raeburn 1392: my (%userroles,%newrole,%newgroups,%group_privs);
1393: my %cgroups =
1394: &Apache::lonnet::get_active_groups($env{'user.domain'},
1395: $env{'user.name'},$cdom,$cnum);
1396: foreach my $group (keys(%cgroups)) {
1397: $group_privs{$group} =
1398: $env{'user.priv.cc./'.$cdom.'/'.$cnum.'./'.$cdom.'/'.$cnum.'/'.$group};
1399: }
1400: $newgroups{'/'.$cdom.'/'.$cnum} = \%group_privs;
1.185 raeburn 1401: my $area = '/'.$cdom.'/'.$cnum;
1402: my $spec = $role.'.'.$area;
1403: if ($usec ne '') {
1404: $spec .= '/'.$usec;
1405: $area .= '/'.$usec;
1406: }
1407: &Apache::lonnet::standard_roleprivs(\%newrole,$role,$cdom,$spec,$cnum,$area);
1.208 raeburn 1408: &Apache::lonnet::set_userprivs(\%userroles,\%newrole,\%newgroups);
1.185 raeburn 1409: my $adhocstart = $then-1;
1410: $userroles{'user.role.'.$spec} = $adhocstart.'.';
1.186 raeburn 1411: &Apache::lonnet::appenv(\%userroles,[$role,'cm']);
1.185 raeburn 1412: }
1413: }
1414: }
1415: return;
1416: }
1417:
1418: sub check_forcc {
1419: my ($cdom,$cnum,$then) = @_;
1420: my $is_cc;
1421: if ($cdom ne '' && $cnum ne '') {
1422: if (&Apache::lonnet::is_course($cdom,$cnum)) {
1423: my $envkey = 'user.role.cc./'.$cdom.'/'.$cnum;
1424: if (defined($env{$envkey})) {
1425: $is_cc = 1;
1426: my ($tstart,$tend)=split(/\./,$env{$envkey});
1427: if ($tstart && $tstart>$then) { $is_cc = 0; }
1428: if ($tend && $tend <$then) { $is_cc = 0; }
1429: }
1430: }
1431: }
1432: return $is_cc;
1433: }
1434:
1.108 raeburn 1435: sub courselink {
1.193 raeburn 1436: my ($dcdom,$rowtype) = @_;
1.109 raeburn 1437: my $courseform=&Apache::loncommon::selectcourse_link
1.152 raeburn 1438: ('rolechoice','dccourse'.$rowtype.'_'.$dcdom,
1439: 'dcdomain'.$rowtype.'_'.$dcdom,'coursedesc'.$rowtype.'_'.
1.173 albertel 1440: $dcdom,$dcdom,undef);
1.138 raeburn 1441: my $hiddenitems = '<input type="hidden" name="dcdomain'.$rowtype.'_'.$dcdom.'" value="'.$dcdom.'" />'.
1442: '<input type="hidden" name="origdom'.$rowtype.'_'.$dcdom.'" value="'.$dcdom.'" />'.
1443: '<input type="hidden" name="dccourse'.$rowtype.'_'.$dcdom.'" value="" />'.
1444: '<input type="hidden" name="coursedesc'.$rowtype.'_'.$dcdom.'" value="" />';
1.112 raeburn 1445: return $courseform.$hiddenitems;
1.109 raeburn 1446: }
1447:
1448: sub coursepick_jscript {
1.184 raeburn 1449: my %lt = &Apache::lonlocal::texthash(
1450: plsu => "Please use the 'Select Course' link to open a separate pick course window where you may select the course you wish to enter.",
1451: youc => 'You can only use this screen to select courses in the current domain.',
1452: );
1.104 raeburn 1453: my $verify_script = <<"END";
1.179 raeburn 1454: <script type="text/javascript">
1.225 bisitz 1455: // <![CDATA[
1.108 raeburn 1456: function verifyCoursePick(caller) {
1457: var numbutton = getIndex(caller)
1.112 raeburn 1458: var pickedCourse = document.rolechoice.elements[numbutton+4].value
1459: var pickedDomain = document.rolechoice.elements[numbutton+2].value
1460: if (document.rolechoice.elements[numbutton+2].value == document.rolechoice.elements[numbutton+3].value) {
1.104 raeburn 1461: if (pickedCourse != '') {
1.108 raeburn 1462: if (numbutton != -1) {
1463: var courseTarget = "cc./"+pickedDomain+"/"+pickedCourse
1464: document.rolechoice.elements[numbutton+1].name = courseTarget
1465: document.rolechoice.submit()
1466: }
1.104 raeburn 1467: }
1468: else {
1.184 raeburn 1469: alert("$lt{'plsu'}");
1.104 raeburn 1470: }
1471: }
1472: else {
1.184 raeburn 1473: alert("$lt{'youc'}")
1.104 raeburn 1474: }
1475: }
1.109 raeburn 1476: function getIndex(caller) {
1.108 raeburn 1477: for (var i=0;i<document.rolechoice.elements.length;i++) {
1.109 raeburn 1478: if (document.rolechoice.elements[i] == caller) {
1.108 raeburn 1479: return i;
1480: }
1481: }
1482: return -1;
1483: }
1.225 bisitz 1484: // ]]>
1.104 raeburn 1485: </script>
1486: END
1.109 raeburn 1487: return $verify_script;
1.104 raeburn 1488: }
1489:
1.193 raeburn 1490: sub coauthorlink {
1491: my ($dcdom,$rowtype) = @_;
1492: my $coauthorform=&Apache::loncommon::selectauthor_link('rolechoice',$dcdom);
1493: my $hiddenitems = '<input type="hidden" name="adhoccauname'.$rowtype.'_'.$dcdom.'" value="" />';
1494: return $coauthorform.$hiddenitems;
1495: }
1496:
1.113 raeburn 1497: sub display_cc_role {
1498: my $rolekey = shift;
1.223 raeburn 1499: my ($roletext,$roletext_end);
1.118 albertel 1500: my $advanced = $env{'user.adv'};
1501: my $tryagain = $env{'form.tryagain'};
1.113 raeburn 1502: unless ($rolekey =~/^error\:/) {
1.171 albertel 1503: if ($rolekey =~ m-^user\.role.cc\./($match_domain)/($match_courseid)$-) {
1.113 raeburn 1504: my $tcourseid = $1.'_'.$2;
1505: my $trolecode = 'cc./'.$1.'/'.$2;
1506: my $twhere;
1.152 raeburn 1507: my $ttype;
1.212 bisitz 1508: my $tbg='LC_roles_is';
1.113 raeburn 1509: my %newhash=&Apache::lonnet::coursedescription($tcourseid);
1510: if (%newhash) {
1511: $twhere=$newhash{'description'}.
1.211 tempelho 1512: ' <span style="LC_fontsize_small">'.
1.212 bisitz 1513: &Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$2,$1).
1.211 tempelho 1514: '</span>';
1.153 raeburn 1515: $ttype = $newhash{'type'};
1.113 raeburn 1516: } else {
1517: $twhere=&mt('Currently not available');
1.118 albertel 1518: $env{'course.'.$tcourseid.'.description'}=$twhere;
1.110 raeburn 1519: }
1.153 raeburn 1520: my $trole = &Apache::lonnet::plaintext('cc',$ttype);
1.113 raeburn 1521: $twhere.="<br />".&mt('Domain').":".$1;
1.223 raeburn 1522: ($roletext,$roletext_end) = &build_roletext($trolecode,$1,$2,'is',$tryagain,$advanced,'',$tbg,$trole,$twhere,'','','',1,'');
1.104 raeburn 1523: }
1524: }
1.223 raeburn 1525: return ($roletext,$roletext_end);
1.104 raeburn 1526: }
1527:
1.192 raeburn 1528: sub adhoc_roles_row {
1.138 raeburn 1529: my ($dcdom,$rowtype) = @_;
1.212 bisitz 1530: my $output = &Apache::loncommon::continue_data_table_row()
1531: .' <td colspan="5">'
1532: .'<table><tr><td>'
1533: .&mt('[_1]Ad hoc[_2] roles in domain [_3] --'
1534: ,'<span class="LC_cusr_emph">','</span>',$dcdom)
1535: .'</td>'
1536: .'<td>';
1.193 raeburn 1537: my $selectcclink = &courselink($dcdom,$rowtype);
1.173 albertel 1538: my $ccrole = &Apache::lonnet::plaintext('cc');
1.182 www 1539: my $carole = &Apache::lonnet::plaintext('ca');
1.193 raeburn 1540: my $selectcalink = &coauthorlink($dcdom,$rowtype);
1.212 bisitz 1541: $output.=&mt('[_1]: [_2]',$ccrole,$selectcclink)
1542: .'<br /></td>'
1543: .'<td> </td>'
1544: .'<td>'.&mt('[_1]: [_2]',$carole,$selectcalink).'<br /></td>'
1545: .'</tr></table>'
1546: .'</td>'
1547: .&Apache::loncommon::end_data_table_row();
1.108 raeburn 1548: return $output;
1549: }
1550:
1.104 raeburn 1551: sub recent_filename {
1552: my $area=shift;
1.149 www 1553: return 'nohist_recent_'.&escape($area);
1.104 raeburn 1554: }
1555:
1.139 raeburn 1556: sub courseloadpage {
1557: my ($courseid) = @_;
1558: my $startpage;
1.144 albertel 1559: my %entry_settings = &Apache::lonnet::get('nohist_whatsnew',
1560: [$courseid.':courseinit']);
1.139 raeburn 1561: my ($tmp) = %entry_settings;
1.144 albertel 1562: unless ($tmp =~ /^error: 2 /) {
1.139 raeburn 1563: $startpage = $entry_settings{$courseid.':courseinit'};
1564: }
1565: if ($startpage eq '') {
1566: if (exists($env{'environment.course_init_display'})) {
1567: $startpage = $env{'environment.course_init_display'};
1568: }
1569: }
1570: return $startpage;
1571: }
1572:
1.1 harris41 1573: 1;
1574: __END__
1.32 harris41 1575:
1576: =head1 NAME
1577:
1578: Apache::lonroles - User Roles Screen
1579:
1580: =head1 SYNOPSIS
1581:
1582: Invoked by /etc/httpd/conf/srm.conf:
1583:
1584: <Location /adm/roles>
1585: PerlAccessHandler Apache::lonacc
1586: SetHandler perl-script
1587: PerlHandler Apache::lonroles
1588: ErrorDocument 403 /adm/login
1589: ErrorDocument 500 /adm/errorhandler
1590: </Location>
1.64 bowersj2 1591:
1592: =head1 OVERVIEW
1593:
1594: =head2 Choosing Roles
1595:
1596: C<lonroles> is a handler that allows a user to switch roles in
1597: mid-session. LON-CAPA attempts to work with "No Role Specified", the
1598: default role that a user has before selecting a role, as widely as
1599: possible, but certain handlers for example need specification which
1600: course they should act on, etc. Both in this scenario, and when the
1601: handler determines via C<lonnet>'s C<&allowed> function that a certain
1602: action is not allowed, C<lonroles> is used as error handler. This
1603: allows the user to select another role which may have permission to do
1604: what they were trying to do. C<lonroles> can also be accessed via the
1605: B<CRS> button in the Remote Control.
1606:
1607: =begin latex
1608:
1609: \begin{figure}
1610: \begin{center}
1611: \includegraphics[width=0.45\paperwidth,keepaspectratio]{Sample_Roles_Screen}
1612: \caption{\label{Sample_Roles_Screen}Sample Roles Screen}
1613: \end{center}
1614: \end{figure}
1615:
1616: =end latex
1617:
1618: =head2 Role Initialization
1619:
1620: 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.
1.32 harris41 1621:
1622: =head1 INTRODUCTION
1623:
1624: This module enables a user to select what role he wishes to
1625: operate under (instructor, student, teaching assistant, course
1626: coordinator, etc). These roles are pre-established by the actions
1627: of upper-level users.
1628:
1629: This is part of the LearningOnline Network with CAPA project
1630: described at http://www.lon-capa.org.
1631:
1632: =head1 HANDLER SUBROUTINE
1633:
1634: This routine is called by Apache and mod_perl.
1635:
1636: =over 4
1637:
1638: =item *
1639:
1640: Roles Initialization (yes/no)
1641:
1642: =item *
1643:
1644: Get Error Message from Environment
1645:
1646: =item *
1647:
1648: Who is this?
1649:
1650: =item *
1651:
1652: Generate Page Output
1653:
1654: =item *
1655:
1656: Choice or no choice
1657:
1658: =item *
1659:
1660: Table
1661:
1662: =item *
1663:
1664: Privileges
1665:
1666: =back
1667:
1668: =cut
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