Annotation of loncom/auth/lonroles.pm, revision 1.218
1.1 harris41 1: # The LearningOnline Network with CAPA
2: # User Roles Screen
1.31 www 3: #
1.218 ! raeburn 4: # $Id: lonroles.pm,v 1.217 2009/02/26 16:17:33 schafran 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">
1.62 matthew 170: $swinfo
171: </script>
1.96 albertel 172: $navwindow
1.62 matthew 173: <h1>$msg</h1>
1.147 albertel 174: $end_page
1.62 matthew 175: ENDREDIR
176: return;
177: }
178:
1.150 www 179: sub error_page {
180: my ($r,$error,$dest)=@_;
181: &Apache::loncommon::content_type($r,'text/html');
182: &Apache::loncommon::no_cache($r);
183: $r->send_http_header;
184: return OK if $r->header_only;
185: $r->print(&Apache::loncommon::start_page('Problems during Course Initialization').
186: '<script type="text/javascript">'.
187: &Apache::lonmenu::rawconfig().'</script>'.
188: '<p>'.&mt('The following problems occurred:').
189: $error.
1.156 albertel 190: '</p><br /><a href="'.$dest.'">'.&mt('Continue').'</a>'.
1.150 www 191: &Apache::loncommon::end_page());
192: }
193:
1.1 harris41 194: sub handler {
1.10 www 195:
1.1 harris41 196: my $r = shift;
197:
1.6 www 198: my $now=time;
1.118 albertel 199: my $then=$env{'user.login.time'};
1.6 www 200: my $envkey;
1.107 raeburn 201: my %dcroles = ();
202: my $numdc = &check_fordc(\%dcroles,$then);
1.148 albertel 203: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'});
1.10 www 204:
1.6 www 205: # ================================================================== Roles Init
1.118 albertel 206: if ($env{'form.selectrole'}) {
1.188 www 207:
208: my $locknum=&Apache::lonnet::get_locks();
209: if ($locknum) { return 409; }
210:
1.134 www 211: if ($env{'form.newrole'}) {
212: $env{'form.'.$env{'form.newrole'}}=1;
213: }
1.118 albertel 214: if ($env{'request.course.id'}) {
1.185 raeburn 215: # Check if user is CC trying to select a course role
216: if ($env{'form.switchrole'}) {
217: if (!defined($env{'user.role.'.$env{'form.switchrole'}})) {
218: &adhoc_course_role($then);
219: }
220: }
1.118 albertel 221: my %temp=('logout_'.$env{'request.course.id'} => time);
1.33 www 222: &Apache::lonnet::put('email_status',\%temp);
1.118 albertel 223: &Apache::lonnet::delenv('user.state.'.$env{'request.course.id'});
1.100 albertel 224: }
1.186 raeburn 225: &Apache::lonnet::appenv({"request.course.id" => '',
226: "request.course.fn" => '',
227: "request.course.uri" => '',
228: "request.course.sec" => '',
229: "request.role" => 'cm',
230: "request.role.adv" => $env{'user.adv'},
231: "request.role.domain" => $env{'user.domain'}});
1.182 www 232: # Check if user is a DC trying to enter a course or author space and needs privs to be created
1.107 raeburn 233: if ($numdc > 0) {
1.118 albertel 234: foreach my $envkey (keys %env) {
1.182 www 235: # Is this an ad-hoc CC-role?
1.146 raeburn 236: if (my ($domain,$coursenum) =
1.171 albertel 237: ($envkey =~ m-^form\.cc\./($match_domain)/($match_courseid)$-)) {
1.146 raeburn 238: if ($dcroles{$domain}) {
1.218 ! raeburn 239: &Apache::lonnet::check_adhoc_privs($domain,$coursenum,
! 240: $then,$now,'cc');
1.182 www 241: }
242: last;
243: }
1.193 raeburn 244: # Is this an ad-hoc CA-role?
1.183 www 245: if (my ($domain,$user) =
246: ($envkey =~ m-^form\.ca\./($match_domain)/($match_username)$-)) {
1.206 raeburn 247: if (($domain eq $env{'user.domain'}) && ($user eq $env{'user.name'})) {
248: delete($env{$envkey});
249: $env{'form.au./'.$domain.'/'} = 1;
250: my ($server_status,$home) = &check_author_homeserver($user,$domain);
251: if ($server_status eq 'switchserver') {
252: my $trolecode = 'au./'.$domain.'/';
253: my $switchserver = '/adm/switchserver?otherserver='.$home.'&role='.$trolecode;
254: $r->internal_redirect($switchserver);
255: }
256: last;
257: }
258: if (my ($castart,$caend) = ($env{'user.role.ca./'.$domain.'/'.$user} =~ /^(\d*)\.(\d*)$/)) {
259: if (((($castart) && ($castart < $now)) || !$castart) &&
260: ((!$caend) || (($caend) && ($caend > $now)))) {
261: my ($server_status,$home) = &check_author_homeserver($user,$domain);
262: if ($server_status eq 'switchserver') {
263: my $trolecode = 'ca./'.$domain.'/'.$user;
264: my $switchserver = '/adm/switchserver?otherserver='.$home.'&role='.$trolecode;
265: $r->internal_redirect($switchserver);
266: }
267: last;
268: }
269: }
270: # Check if author blocked ca-access
1.190 www 271: my %blocked=&Apache::lonnet::get('environment',['domcoord.author'],$domain,$user);
272: if ($blocked{'domcoord.author'} eq 'blocked') {
1.206 raeburn 273: delete($env{$envkey});
274: $env{'user.error.msg'}=':::1:User '.$user.' in domain '.$domain.' blocked domain coordinator access';
275: last;
1.190 www 276: }
1.193 raeburn 277: if ($dcroles{$domain}) {
278: my ($server_status,$home) = &check_author_homeserver($user,$domain);
279: if (($server_status eq 'ok') || ($server_status eq 'switchserver')) {
1.218 ! raeburn 280: &Apache::lonnet::check_adhoc_privs($domain,$user,$then,
! 281: $now,'ca');
1.193 raeburn 282: if ($server_status eq 'switchserver') {
283: my $trolecode = 'ca./'.$domain.'/'.$user;
284: my $switchserver = '/adm/switchserver?'
285: .'otherserver='.$home.'&role='.$trolecode;
286: $r->internal_redirect($switchserver);
287: }
288: } else {
289: delete($env{$envkey});
290: }
1.183 www 291: } else {
292: delete($env{$envkey});
1.182 www 293: }
294: last;
295: }
1.107 raeburn 296: }
297: }
298:
1.118 albertel 299: foreach $envkey (keys %env) {
1.40 matthew 300: next if ($envkey!~/^user\.role\./);
1.102 raeburn 301: my ($where,$trolecode,$role,$tstatus,$tend,$tstart);
1.218 ! raeburn 302: &Apache::lonnet::role_status($envkey,$then,$now,\$role,\$where,
! 303: \$trolecode,\$tstatus,\$tstart,\$tend);
1.118 albertel 304: if ($env{'form.'.$trolecode}) {
1.55 albertel 305: if ($tstatus eq 'is') {
306: $where=~s/^\///;
307: my ($cdom,$cnum,$csec)=split(/\//,$where);
1.137 raeburn 308: # check for course groups
309: my %coursegroups = &Apache::lonnet::get_active_groups(
310: $env{'user.domain'},$env{'user.name'},$cdom, $cnum);
311: my $cgrps = join(':',keys(%coursegroups));
312:
1.111 albertel 313: # store role if recent_role list being kept
1.118 albertel 314: if ($env{'environment.recentroles'}) {
1.158 albertel 315: my %frozen_roles =
316: &Apache::lonhtmlcommon::get_recent_frozen('roles',$env{'environment.recentrolesn'});
1.111 albertel 317: &Apache::lonhtmlcommon::store_recent('roles',
1.158 albertel 318: $trolecode,' ',$frozen_roles{$trolecode});
1.111 albertel 319: }
320:
321:
1.53 www 322: # check for keyed access
1.55 albertel 323: if (($role eq 'st') &&
1.118 albertel 324: ($env{'course.'.$cdom.'_'.$cnum.'.keyaccess'} eq 'yes')) {
1.89 www 325: # who is key authority?
326: my $authdom=$cdom;
327: my $authnum=$cnum;
1.118 albertel 328: if ($env{'course.'.$cdom.'_'.$cnum.'.keyauth'}) {
1.89 www 329: ($authnum,$authdom)=
1.172 albertel 330: split(/:/,$env{'course.'.$cdom.'_'.$cnum.'.keyauth'});
1.89 www 331: }
332: # check with key authority
333: unless (&Apache::lonnet::validate_access_key(
1.118 albertel 334: $env{'environment.key.'.$cdom.'_'.$cnum},
1.89 www 335: $authdom,$authnum)) {
1.53 www 336: # there is no valid key
1.118 albertel 337: if ($env{'form.newkey'}) {
1.53 www 338: # student attempts to register a new key
1.89 www 339: &Apache::loncommon::content_type($r,'text/html');
340: &Apache::loncommon::no_cache($r);
341: $r->send_http_header;
342: my $swinfo=&Apache::lonmenu::rawconfig();
1.147 albertel 343: my $start_page=&Apache::loncommon::start_page
1.89 www 344: ('Verifying Access Key to Unlock this Course');
1.147 albertel 345: my $end_page=&Apache::loncommon::end_page();
1.90 www 346: my $buttontext=&mt('Enter Course');
347: my $message=&mt('Successfully registered key');
348: my $assignresult=
349: &Apache::lonnet::assign_access_key(
1.118 albertel 350: $env{'form.newkey'},
1.90 www 351: $authdom,$authnum,
1.91 www 352: $cdom,$cnum,
1.118 albertel 353: $env{'user.domain'},
354: $env{'user.name'},
1.204 bisitz 355: &mt('Assigned from [_1] at [_2] for [_3]'
356: ,$ENV{'REMOTE_ADDR'}
357: ,&Apache::lonlocal::locallocaltime()
358: ,$trolecode)
359: );
1.90 www 360: unless ($assignresult eq 'ok') {
361: $assignresult=~s/^error\:\s*//;
362: $message=&mt($assignresult).
363: '<br /><a href="/adm/logout">'.
1.89 www 364: &mt('Logout').'</a>';
1.90 www 365: $buttontext=&mt('Re-Enter Key');
366: }
1.89 www 367: $r->print(<<ENDENTEREDKEY);
1.147 albertel 368: $start_page
1.179 raeburn 369: <script type="text/javascript">
1.89 www 370: $swinfo
371: </script>
372: <form method="post">
373: <input type="hidden" name="selectrole" value="1" />
374: <input type="hidden" name="$trolecode" value="1" />
1.211 tempelho 375: <span class="LC_fontsize_large">$message</span><br />
1.89 www 376: <input type="submit" value="$buttontext" />
377: </form>
1.147 albertel 378: $end_page
1.89 www 379: ENDENTEREDKEY
380: return OK;
1.55 albertel 381: } else {
1.53 www 382: # print form to enter a new key
1.73 www 383: &Apache::loncommon::content_type($r,'text/html');
1.55 albertel 384: &Apache::loncommon::no_cache($r);
385: $r->send_http_header;
386: my $swinfo=&Apache::lonmenu::rawconfig();
1.147 albertel 387: my $start_page=&Apache::loncommon::start_page
1.55 albertel 388: ('Enter Access Key to Unlock this Course');
1.147 albertel 389: my $end_page=&Apache::loncommon::end_page();
1.55 albertel 390: $r->print(<<ENDENTERKEY);
1.147 albertel 391: $start_page
1.179 raeburn 392: <script type="text/javascript">
1.53 www 393: $swinfo
394: </script>
395: <form method="post">
1.89 www 396: <input type="hidden" name="selectrole" value="1" />
397: <input type="hidden" name="$trolecode" value="1" />
1.118 albertel 398: <input type="text" size="20" name="newkey" value="$env{'form.newkey'}" />
1.53 www 399: <input type="submit" value="Enter key" />
400: </form>
1.147 albertel 401: $end_page
1.53 www 402: ENDENTERKEY
1.55 albertel 403: return OK;
404: }
405: }
406: }
1.118 albertel 407: &Apache::lonnet::log($env{'user.domain'},
408: $env{'user.name'},
409: $env{'user.home'},
1.87 www 410: "Role ".$trolecode);
1.101 albertel 411:
1.56 www 412: &Apache::lonnet::appenv(
1.186 raeburn 413: {'request.role' => $trolecode,
414: 'request.role.domain' => $cdom,
415: 'request.course.sec' => $csec,
416: 'request.course.groups' => $cgrps});
1.101 albertel 417: my $tadv=0;
1.62 matthew 418:
1.125 www 419: if (($cnum) && ($role ne 'ca') && ($role ne 'aa')) {
1.152 raeburn 420: my $msg;
1.55 albertel 421: my ($furl,$ferr)=
422: &Apache::lonuserstate::readmap($cdom.'/'.$cnum);
1.118 albertel 423: if (($env{'form.orgurl'}) &&
424: ($env{'form.orgurl'}!~/^\/adm\/flip/)) {
425: my $dest=$env{'form.orgurl'};
1.117 albertel 426: if (&Apache::lonnet::allowed('adv') eq 'F') { $tadv=1; }
1.186 raeburn 427: &Apache::lonnet::appenv({'request.role.adv'=>$tadv});
1.150 www 428: if (($ferr) && ($tadv)) {
429: &error_page($r,$ferr,$dest);
430: } else {
431: $r->internal_redirect($dest);
432: }
1.55 albertel 433: return OK;
434: } else {
1.155 albertel 435: if (!$env{'request.course.id'}) {
1.55 albertel 436: &Apache::lonnet::appenv(
1.186 raeburn 437: {"request.course.id" => $cdom.'_'.$cnum});
1.61 www 438: $furl='/adm/roles?tryagain=1';
1.55 albertel 439: $msg=
1.157 albertel 440: '<h1><span class="LC_error">'.
1.162 albertel 441: &mt('Could not initialize [_1] at this time.',
442: $env{'course.'.$cdom.'_'.$cnum.'.description'}).
1.157 albertel 443: '</span></h1><h3>'.&mt('Please try again.').'</h3>'.$ferr;
1.55 albertel 444: }
1.117 albertel 445: if (&Apache::lonnet::allowed('adv') eq 'F') { $tadv=1; }
1.186 raeburn 446: &Apache::lonnet::appenv({'request.role.adv'=>$tadv});
1.152 raeburn 447:
1.150 www 448: if (($ferr) && ($tadv)) {
449: &error_page($r,$ferr,$furl);
450: } else {
451: # Check to see if the user is a CC entering a course
452: # for the first time
453: my (undef, undef, $role, $courseid) = split(/\./, $envkey);
454: if (substr($courseid, 0, 1) eq '/') {
455: $courseid = substr($courseid, 1);
456: }
457: $courseid =~ s/\//_/;
458: if ($role eq 'cc' && $env{'course.' . $courseid .
459: '.course.helper.not.run'}) {
460: $furl = "/adm/helper/course.initialization.helper";
461: # Send the user to the course they selected
462: } elsif ($env{'request.course.id'}) {
1.185 raeburn 463: if ($env{'form.destinationurl'}) {
464: my $dest = $env{'form.destinationurl'};
1.203 raeburn 465: if ($env{'form.destsymb'} ne '') {
466: my $esc_symb = &HTML::Entities::encode($env{'form.destsymb'},'"<>&');
467: $dest .= '?symb='.$esc_symb;
468: }
1.185 raeburn 469: &redirect_user($r,&mt('Entering [_1]',
470: $env{'course.'.$courseid.'.description'}),
471: $dest,$msg,
472: $env{'environment.remotenavmap'});
473: return OK;
474: }
1.150 www 475: if (&Apache::lonnet::allowed('whn',
476: $env{'request.course.id'})
477: || &Apache::lonnet::allowed('whn',
478: $env{'request.course.id'}.'/'
479: .$env{'request.course.sec'})
480: ) {
481: my $startpage = &courseloadpage($courseid);
482: unless ($startpage eq 'firstres') {
1.204 bisitz 483: $msg = &mt('Entering [_1] ...',
1.162 albertel 484: $env{'course.'.$courseid.'.description'});
1.150 www 485: &redirect_user($r,&mt('New in course'),
486: '/adm/whatsnew?refpage=start',$msg,
487: $env{'environment.remotenavmap'});
488: return OK;
489: }
490: }
491: }
1.151 www 492: # Are we allowed to look at the first resource?
1.169 albertel 493: if ($furl !~ m|^/adm/|) {
1.151 www 494: # Guess not ...
495: $furl=&Apache::lonpageflip::first_accessible_resource();
496: }
1.162 albertel 497: $msg = &mt('Entering [_1] ...',
498: $env{'course.'.$courseid.'.description'});
499: &redirect_user($r,&mt('Entering [_1]',
500: $env{'course.'.$courseid.'.description'}),
1.150 www 501: $furl,$msg,
502: $env{'environment.remotenavmap'});
1.58 bowersj2 503: }
1.124 albertel 504: return OK;
1.55 albertel 505: }
506: }
1.62 matthew 507: #
508: # Send the user to the construction space they selected
1.125 www 509: if ($role =~ /^(au|ca|aa)$/) {
1.62 matthew 510: my $redirect_url = '/priv/';
511: if ($role eq 'au') {
1.118 albertel 512: $redirect_url.=$env{'user.name'};
1.62 matthew 513: } else {
514: $where =~ /\/(.*)$/;
515: $redirect_url .= $1;
516: }
517: $redirect_url .= '/';
1.78 sakharuk 518: &redirect_user($r,&mt('Entering Construction Space'),
1.62 matthew 519: $redirect_url);
520: return OK;
521: }
1.104 raeburn 522: if ($role eq 'dc') {
1.108 raeburn 523: my $redirect_url = '/adm/menu/';
524: &redirect_user($r,&mt('Loading Domain Coordinator Menu'),
1.104 raeburn 525: $redirect_url);
1.108 raeburn 526: return OK;
1.104 raeburn 527: }
1.55 albertel 528: }
529: }
1.6 www 530: }
1.40 matthew 531: }
1.44 www 532:
1.10 www 533:
1.6 www 534: # =============================================================== No Roles Init
1.10 www 535:
1.73 www 536: &Apache::loncommon::content_type($r,'text/html');
1.30 albertel 537: &Apache::loncommon::no_cache($r);
1.10 www 538: $r->send_http_header;
539: return OK if $r->header_only;
540:
1.214 raeburn 541: my $brcrum =[{href=>"/admm/roles",text=>"User Roles"}];
1.52 www 542: my $swinfo=&Apache::lonmenu::rawconfig();
1.217 schafran 543: my $start_page=&Apache::loncommon::start_page('My Roles',undef,{bread_crumbs=>$brcrum});
1.134 www 544: my $standby=&mt('Role selected. Please stand by.');
1.135 albertel 545: $standby=~s/\n/\\n/g;
1.184 raeburn 546: 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 547:
1.10 www 548: $r->print(<<ENDHEADER);
1.147 albertel 549: $start_page
1.163 www 550: <br />
1.179 raeburn 551: <noscript>
552: $noscript
553: </noscript>
554: <script type="text/javascript">
1.26 www 555: $swinfo
556: window.focus();
1.134 www 557:
558: active=true;
559:
560: function enterrole (thisform,rolecode,buttonname) {
561: if (active) {
562: active=false;
563: document.title='$standby';
564: window.status='$standby';
565: thisform.newrole.value=rolecode;
566: thisform.submit();
567: } else {
568: alert('$standby');
569: }
570: }
1.26 www 571: </script>
1.10 www 572: ENDHEADER
1.6 www 573:
1.2 www 574: # ------------------------------------------ Get Error Message from Environment
575:
1.118 albertel 576: my ($fn,$priv,$nochoose,$error,$msg)=split(/:/,$env{'user.error.msg'});
577: if ($env{'user.error.msg'}) {
1.55 albertel 578: $r->log_reason(
1.118 albertel 579: "$msg for $env{'user.name'} domain $env{'user.domain'} access $priv",$fn);
1.12 www 580: }
1.1 harris41 581:
1.61 www 582: # ------------------------------------------------- Can this user re-init, etc?
1.6 www 583:
1.118 albertel 584: my $advanced=$env{'user.adv'};
1.61 www 585: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['tryagain']);
1.118 albertel 586: my $tryagain=$env{'form.tryagain'};
1.209 raeburn 587: my $reinit=$env{'user.reinit'};
588: delete $env{'user.reinit'};
1.6 www 589:
1.2 www 590: # -------------------------------------------------------- Generate Page Output
1.6 www 591: # --------------------------------------------------------------- Error Header?
1.2 www 592: if ($error) {
1.187 bisitz 593: $r->print("<h1>".&mt('LON-CAPA Access Control')."</h1>");
1.174 albertel 594: $r->print("<!-- LONCAPAACCESSCONTROLERRORSCREEN --><hr /><pre>");
595: if ($priv ne '') {
1.187 bisitz 596: $r->print(&mt('Access : ').&Apache::lonnet::plaintext($priv)."\n");
1.174 albertel 597: }
598: if ($fn ne '') {
1.187 bisitz 599: $r->print(&mt('Resource: ').&Apache::lonenc::check_encrypt($fn)."\n");
1.174 albertel 600: }
601: if ($msg ne '') {
1.187 bisitz 602: $r->print(&mt('Action : ').$msg."\n");
1.174 albertel 603: }
604: $r->print("</pre><hr />");
1.120 albertel 605: my $url=$fn;
606: my $last;
607: if (tie(my %hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
608: &GDBM_READER(),0640)) {
609: $last=$hash{'last_known'};
610: untie(%hash);
611: }
1.149 www 612: if ($last) { $fn.='?symb='.&escape($last); }
1.120 albertel 613:
614: &Apache::londocs::changewarning($r,undef,'You have modified your course recently, [_1] may fix this access problem.',
615: &Apache::lonenc::check_encrypt($fn));
1.2 www 616: } else {
1.118 albertel 617: if ($env{'user.error.msg'}) {
1.209 raeburn 618: if ($reinit) {
619: $r->print(
620: '<h3><span class="LC_error">'.
621: &mt('As your session file for the course has expired, you will need to re-select the course.').'</span></h3>');
622: } else {
623: $r->print(
1.157 albertel 624: '<h3><span class="LC_error">'.
625: &mt('You need to choose another user role or enter a specific course for this function').'</span></h3>');
1.209 raeburn 626: }
627: }
1.2 www 628: }
1.6 www 629: # -------------------------------------------------------- Choice or no choice?
1.2 www 630: if ($nochoose) {
1.177 www 631: $r->print("<h2>".&mt('Sorry ...')."</h2>\n<span class='LC_error'>".
632: &mt('This action is currently not authorized.').'</span>'.
1.150 www 633: &Apache::loncommon::end_page());
634: return OK;
1.6 www 635: } else {
1.18 www 636: if (($ENV{'REDIRECT_QUERY_STRING'}) && ($fn)) {
637: $fn.='?'.$ENV{'REDIRECT_QUERY_STRING'};
1.6 www 638: }
1.84 www 639: $r->print('<form method="post" name="rolechoice" action="'.(($fn)?$fn:$r->uri).'">');
1.116 albertel 640: $r->print('<input type="hidden" name="orgurl" value="'.$fn.'" />');
641: $r->print('<input type="hidden" name="selectrole" value="1" />');
1.134 www 642: $r->print('<input type="hidden" name="newrole" value="" />');
1.6 www 643: }
1.75 albertel 644: my (%roletext,%sortrole,%roleclass);
1.84 www 645: my $countactive=0;
1.191 raeburn 646: my $countfuture=0;
647: my $countwill=0;
1.84 www 648: my $inrole=0;
649: my $possiblerole='';
1.191 raeburn 650: my %futureroles;
651: my %roles_nextlogin;
1.215 raeburn 652: my %timezones;
1.118 albertel 653: foreach $envkey (sort keys %env) {
1.35 matthew 654: my $button = 1;
1.49 www 655: my $switchserver='';
1.75 albertel 656: my $roletext;
657: my $sortkey;
1.2 www 658: if ($envkey=~/^user\.role\./) {
1.212 bisitz 659: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend);
1.218 ! raeburn 660: &Apache::lonnet::role_status($envkey,$then,$now,\$role,\$where,
! 661: \$trolecode,\$tstatus,\$tstart,\$tend);
1.136 raeburn 662: next if (!defined($role) || $role eq '' || $role =~ /^gr/);
1.215 raeburn 663: my $timezone = &role_timezone($where,\%timezones);
1.102 raeburn 664: $tremark='';
665: $tpstart=' ';
666: $tpend=' ';
1.4 www 667: if ($tstart) {
1.215 raeburn 668: $tpstart=&Apache::lonlocal::locallocaltime($tstart,$timezone);
1.4 www 669: }
670: if ($tend) {
1.215 raeburn 671: $tpend=&Apache::lonlocal::locallocaltime($tend,$timezone);
1.4 www 672: }
1.118 albertel 673: if ($env{'request.role'} eq $trolecode) {
1.6 www 674: $tstatus='selected';
675: }
1.4 www 676: my $tbg;
1.164 albertel 677: if (($tstatus eq 'is')
678: || ($tstatus eq 'selected')
679: || ($tstatus eq 'will')
680: || ($tstatus eq 'future')
681: || ($env{'form.showall'})) {
1.35 matthew 682: if ($tstatus eq 'is') {
1.212 bisitz 683: $tbg='LC_roles_is';
1.84 www 684: $possiblerole=$trolecode;
685: $countactive++;
1.35 matthew 686: } elsif ($tstatus eq 'future') {
1.212 bisitz 687: $tbg='LC_roles_future';
1.49 www 688: $button=0;
1.191 raeburn 689: $futureroles{$trolecode} = $tstart.':'.$tend;
690: $countfuture ++;
1.35 matthew 691: } elsif ($tstatus eq 'will') {
1.212 bisitz 692: $tbg='LC_roles_will';
1.204 bisitz 693: $tremark.=&mt('Active at next login.').' ';
1.191 raeburn 694: $roles_nextlogin{$trolecode} = $tstart.':'.$tend;
695: $countwill ++;
1.35 matthew 696: } elsif ($tstatus eq 'expired') {
1.212 bisitz 697: $tbg='LC_roles_expired';
1.49 www 698: $button=0;
1.35 matthew 699: } elsif ($tstatus eq 'will_not') {
1.212 bisitz 700: $tbg='LC_roles_will_not';
1.204 bisitz 701: $tremark.=&mt('Expired after logout.').' ';
1.35 matthew 702: } elsif ($tstatus eq 'selected') {
1.212 bisitz 703: $tbg='LC_roles_selected';
1.84 www 704: $inrole=1;
1.86 albertel 705: $countactive++;
1.204 bisitz 706: $tremark.=&mt('Currently selected.').' ';
1.35 matthew 707: }
708: my $trole;
709: if ($role =~ /^cr\//) {
710: my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$role);
1.132 albertel 711: if ($tremark) { $tremark.='<br />'; }
1.204 bisitz 712: $tremark.=&mt('Defined by [_1] at [_2].',$rauthor,$rdomain);
1.159 albertel 713: }
714: $trole=Apache::lonnet::plaintext($role);
1.35 matthew 715: my $ttype;
716: my $twhere;
717: my ($tdom,$trest,$tsection)=
718: split(/\//,Apache::lonnet::declutter($where));
719: # First, Co-Authorship roles
1.125 www 720: if (($role eq 'ca') || ($role eq 'aa')) {
1.39 stredwic 721: my $home = &Apache::lonnet::homeserver($trest,$tdom);
1.83 albertel 722: my $allowed=0;
723: my @ids=&Apache::lonnet::current_machine_ids();
724: foreach my $id (@ids) { if ($id eq $home) { $allowed=1; } }
725: if (!$allowed) {
1.49 www 726: $button=0;
1.130 albertel 727: $switchserver='otherserver='.$home.'&role='.$trolecode;
1.49 www 728: }
1.35 matthew 729: #next if ($home eq 'no_host');
1.176 albertel 730: $home = &Apache::lonnet::hostname($home);
1.78 sakharuk 731: $ttype='Construction Space';
1.72 www 732: $twhere=&mt('User').': '.$trest.'<br />'.&mt('Domain').
733: ': '.$tdom.'<br />'.
734: ' '.&mt('Server').': '.$home;
1.118 albertel 735: $env{'course.'.$tdom.'_'.$trest.'.description'}='ca';
1.82 www 736: $tremark.=&Apache::lonhtmlcommon::authorbombs('/res/'.$tdom.'/'.$trest.'/');
1.75 albertel 737: $sortkey=$role."$trest:$tdom";
1.35 matthew 738: } elsif ($role eq 'au') {
739: # Authors
740: my $home = &Apache::lonnet::homeserver
1.118 albertel 741: ($env{'user.name'},$env{'user.domain'});
1.83 albertel 742: my $allowed=0;
743: my @ids=&Apache::lonnet::current_machine_ids();
744: foreach my $id (@ids) { if ($id eq $home) { $allowed=1; } }
745: if (!$allowed) {
1.49 www 746: $button=0;
1.143 albertel 747: $switchserver='otherserver='.$home.'&role='.$trolecode;
1.49 www 748: }
1.35 matthew 749: #next if ($home eq 'no_host');
1.176 albertel 750: $home = &Apache::lonnet::hostname($home);
1.78 sakharuk 751: $ttype='Construction Space';
1.72 www 752: $twhere=&mt('Domain').': '.$tdom.'<br />'.&mt('Server').
753: ': '.$home;
1.118 albertel 754: $env{'course.'.$tdom.'_'.$trest.'.description'}='ca';
755: $tremark.=&Apache::lonhtmlcommon::authorbombs('/res/'.$tdom.'/'.$env{'user.name'}.'/');
1.75 albertel 756: $sortkey=$role;
1.35 matthew 757: } elsif ($trest) {
758: my $tcourseid=$tdom.'_'.$trest;
1.153 raeburn 759: $ttype = &Apache::loncommon::course_type($tcourseid);
760: $trole = &Apache::lonnet::plaintext($role,$ttype);
1.118 albertel 761: if ($env{'course.'.$tcourseid.'.description'}) {
762: $twhere=$env{'course.'.$tcourseid.'.description'};
1.80 albertel 763: $sortkey=$role."\0".$tdom."\0".$twhere."\0".$envkey;
1.72 www 764: unless ($twhere eq &mt('Currently not available')) {
1.211 tempelho 765: $twhere.=' <span class="LC_fontsize_small">'.
1.212 bisitz 766: &Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$trest,$tdom).
1.211 tempelho 767: '</span>';
1.55 albertel 768: }
1.8 www 769: } else {
1.105 raeburn 770: my %newhash=&Apache::lonnet::coursedescription($tcourseid);
1.35 matthew 771: if (%newhash) {
1.80 albertel 772: $sortkey=$role."\0".$tdom."\0".$newhash{'description'}.
1.77 albertel 773: "\0".$envkey;
1.49 www 774: $twhere=$newhash{'description'}.
1.211 tempelho 775: ' <span class="LC_fontsize_small">'.
1.212 bisitz 776: &Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$trest,$tdom).
1.211 tempelho 777: '</span>';
1.152 raeburn 778: $ttype = $newhash{'type'};
1.153 raeburn 779: $trole = &Apache::lonnet::plaintext($role,$ttype);
1.35 matthew 780: } else {
1.72 www 781: $twhere=&mt('Currently not available');
1.118 albertel 782: $env{'course.'.$tcourseid.'.description'}=$twhere;
1.80 albertel 783: $sortkey=$role."\0".$tdom."\0".$twhere."\0".$envkey;
1.152 raeburn 784: $ttype = 'Unavailable';
1.35 matthew 785: }
1.8 www 786: }
1.121 albertel 787: if ($tsection) {
1.175 albertel 788: $twhere.='<br />'.&mt('Section').': '.$tsection;
1.121 albertel 789: }
1.72 www 790: if ($role ne 'st') { $twhere.="<br />".&mt('Domain').":".$tdom; }
1.35 matthew 791: } elsif ($tdom) {
1.78 sakharuk 792: $ttype='Domain';
1.35 matthew 793: $twhere=$tdom;
1.75 albertel 794: $sortkey=$role.$twhere;
1.35 matthew 795: } else {
1.78 sakharuk 796: $ttype='System';
1.72 www 797: $twhere=&mt('system wide');
1.75 albertel 798: $sortkey=$role.$twhere;
1.13 www 799: }
1.212 bisitz 800: $roletext.=&build_roletext($trolecode,$tdom,$trest,$tstatus,$tryagain,$advanced,$tremark,$tbg,$trole,$twhere,$tpstart,$tpend,$nochoose,$button,$switchserver,$reinit);
1.75 albertel 801: $roletext{$envkey}=$roletext;
802: if (!$sortkey) {$sortkey=$twhere."\0".$envkey;}
803: $sortrole{$sortkey}=$envkey;
804: $roleclass{$envkey}=$ttype;
1.55 albertel 805: }
1.4 www 806: }
1.75 albertel 807: }
1.196 raeburn 808: if ($env{'user.adv'}) {
809: $r->print(
1.212 bisitz 810: '<p><label>'.&mt('Show all roles').': <input type="checkbox" name="showall"');
1.196 raeburn 811: if ($env{'form.showall'}) { $r->print(' checked="checked" '); }
1.212 bisitz 812: $r->print(' /></label><input type="submit" value="'.&mt('Display').'" /></p>');
1.196 raeburn 813: } else {
814: if ($countactive > 0) {
1.216 raeburn 815: &queued_selfenrollment($r);
1.196 raeburn 816: my $domdesc = &Apache::lonnet::domain($env{'user.domain'},'description');
1.201 raeburn 817: my $esc_dom = &HTML::Entities::encode($env{'user.domain'},'"<>&');
818: $r->print('<p>'.&mt('[_1]Visit the [_2]Course Catalog[_3] to view all [_4] LON-CAPA courses.','<b>','<a href="/adm/coursecatalog?showdom='.$esc_dom.'">','</a></b>',$domdesc).'<br />'.&mt('If a course is [_1]not[_2] in your list of current courses below, you may be able to enroll if self-enrollment is permitted.','<b>','</b>').'</p>');
1.196 raeburn 819: }
820: }
821:
1.84 www 822: # No active roles
823: if ($countactive==0) {
824: if ($inrole) {
825: $r->print('<h2>'.&mt('Currently no additional roles or courses').'</h2>');
826: } else {
827: $r->print('<h2>'.&mt('Currently no active roles or courses').'</h2>');
828: }
1.191 raeburn 829: &findcourse_advice($r);
830: $r->print('</form>');
831: if ($countfuture) {
832: $r->print(&mt('The following [quant,_1,role,roles] will become active in the future:',$countfuture));
833: my $doheaders = &roletable_headers($r,\%roleclass,\%sortrole,
834: $nochoose);
835: &print_rolerows($r,$doheaders,\%roleclass,\%sortrole,\%dcroles,
836: \%roletext);
837: my $tremark='';
1.212 bisitz 838: my $tbg;
1.191 raeburn 839: if ($env{'request.role'} eq 'cm') {
1.212 bisitz 840: $tbg="LC_roles_selected";
1.204 bisitz 841: $tremark=&mt('Currently selected.').' ';
1.191 raeburn 842: } else {
1.212 bisitz 843: $tbg="LC_roles_is";
1.191 raeburn 844: }
1.212 bisitz 845: $r->print(&Apache::loncommon::start_data_table_row()
846: .'<td class="'.$tbg.'"> </td>'
847: .'<td colspan="3">'
848: .&mt('No role specified')
849: .'</td>'
850: .'<td>'.$tremark.' </td>'
851: .&Apache::loncommon::end_data_table_row()
852: );
1.191 raeburn 853:
1.212 bisitz 854: $r->print(&Apache::loncommon::end_data_table());
1.191 raeburn 855: }
856: $r->print(&Apache::loncommon::end_page());
1.84 www 857: return OK;
858: }
859: # ----------------------------------------------------------------------- Table
1.202 raeburn 860: unless ((!&Apache::lonmenu::show_course()) || ($nochoose) || ($countactive==1)) {
1.173 albertel 861: $r->print("<h2>".&mt('Select a Course to Enter')."</h2>\n");
1.84 www 862: }
1.191 raeburn 863: my $doheaders = &roletable_headers($r,\%roleclass,\%sortrole,$nochoose);
1.118 albertel 864: if ($env{'environment.recentroles'}) {
1.111 albertel 865: my %recent_roles =
1.118 albertel 866: &Apache::lonhtmlcommon::get_recent('roles',$env{'environment.recentrolesn'});
1.111 albertel 867: my $output='';
868: foreach (sort(keys(%recent_roles))) {
869: if (defined($roletext{'user.role.'.$_})) {
870: $output.=$roletext{'user.role.'.$_};
1.170 albertel 871: if ($_ =~ m-dc\./($match_domain)/-
872: && $dcroles{$1}) {
1.192 raeburn 873: $output .= &adhoc_roles_row($1,'recent');
1.133 albertel 874: }
1.113 raeburn 875: } elsif ($numdc > 0) {
876: unless ($_ =~/^error\:/) {
877: $output.=&display_cc_role('user.role.'.$_);
878: }
879: }
1.111 albertel 880: }
881: if ($output) {
1.212 bisitz 882: $r->print(&Apache::loncommon::start_data_table_empty_row()
883: .'<td align="center" colspan="5">'
884: .&mt('Recent Roles')
885: .'</td>'
886: .&Apache::loncommon::end_data_table_empty_row()
887: );
1.111 albertel 888: $r->print($output);
1.114 raeburn 889: $doheaders ++;
1.111 albertel 890: }
891: }
892:
1.104 raeburn 893: if ($numdc > 0) {
1.112 raeburn 894: $r->print(&coursepick_jscript());
1.193 raeburn 895: $r->print(&Apache::loncommon::coursebrowser_javascript().
896: &Apache::loncommon::authorbrowser_javascript());
1.108 raeburn 897: }
1.191 raeburn 898: &print_rolerows($r,$doheaders,\%roleclass,\%sortrole,\%dcroles,\%roletext);
1.202 raeburn 899: if ($countactive > 1) {
900: my $tremark='';
1.212 bisitz 901: my $tbg;
1.202 raeburn 902: if ($env{'request.role'} eq 'cm') {
1.212 bisitz 903: $tbg="LC_roles_selected";
1.204 bisitz 904: $tremark=&mt('Currently selected.').' ';
1.202 raeburn 905: } else {
1.212 bisitz 906: $tbg="LC_roles_is";
1.202 raeburn 907: }
1.212 bisitz 908: $r->print(&Apache::loncommon::start_data_table_row());
1.202 raeburn 909: unless ($nochoose) {
910: if ($env{'request.role'} ne 'cm') {
1.212 bisitz 911: $r->print('<td class="'.$tbg.'"><input type="submit" value="'.
1.202 raeburn 912: &mt('Select').'" name="cm" /></td>');
913: } else {
1.212 bisitz 914: $r->print('<td class="'.$tbg.'"> </td>');
1.202 raeburn 915: }
916: }
1.212 bisitz 917: $r->print('<td colspan="3">'
918: .&mt('No role specified')
919: .'</td>'
920: .'<td>'.$tremark.' </td>'
921: .&Apache::loncommon::end_data_table_row()
922: );
1.202 raeburn 923: }
1.212 bisitz 924: $r->print(&Apache::loncommon::end_data_table());
1.4 www 925: unless ($nochoose) {
926: $r->print("</form>\n");
927: }
1.22 harris41 928: # ------------------------------------------------------------ Privileges Info
1.118 albertel 929: if (($advanced) && (($env{'user.error.msg'}) || ($error))) {
1.212 bisitz 930: $r->print('<hr /><h2>'.&mt('Current Privileges').'</h2>');
1.175 albertel 931: $r->print(&privileges_info());
1.4 www 932: }
1.66 www 933: $r->print(&Apache::lonnet::getannounce());
1.65 www 934: if ($advanced) {
1.201 raeburn 935: my $esc_dom = &HTML::Entities::encode($env{'user.domain'},'"<>&');
1.195 bisitz 936: $r->print('<p><small><i>'
937: .&mt('This is LON-CAPA [_1]',$r->dir_config('lonVersion'))
938: .'</i><br />'
1.197 raeburn 939: .'<a href="/adm/logout">'.&mt('Logout').'</a> '
1.201 raeburn 940: .'<a href="/adm/coursecatalog?showdom='.$esc_dom.'">'
941: .&mt('Course Catalog')
1.197 raeburn 942: .'</small></p>');
1.65 www 943: }
1.147 albertel 944: $r->print(&Apache::loncommon::end_page());
1.1 harris41 945: return OK;
1.102 raeburn 946: }
947:
1.215 raeburn 948: sub role_timezone {
949: my ($where,$timezones) = @_;
950: my $timezone;
951: if (ref($timezones) eq 'HASH') {
952: if ($where =~ m{^/($match_domain)/($match_courseid)}) {
953: my $cdom = $1;
954: my $cnum = $2;
955: if ($cdom && $cnum) {
956: if (!exists($timezones->{$cdom.'_'.$cnum})) {
957: my %timehash =
958: &Apache::lonnet::get('environment',['timezone'],$cdom,$cnum);
959: if ($timehash{'timezone'} eq '') {
960: if (!exists($timezones->{$cdom})) {
961: my %domdefaults =
962: &Apache::lonnet::get_domain_defaults($cdom);
963: if ($domdefaults{'timezone_def'} eq '') {
964: $timezones->{$cdom} = 'local';
965: } else {
966: $timezones->{$cdom} = $domdefaults{'timezone_def'};
967: }
968: }
969: $timezones->{$cdom.'_'.$cnum} = $timezones->{$cdom};
970: } else {
971: $timezones->{$cdom.'_'.$cnum} =
972: &Apache::lonlocal::gettimezone($timehash{'timezone'});
973: }
974: }
975: $timezone = $timezones->{$cdom.'_'.$cnum};
976: }
977: } else {
978: my ($tdom) = ($where =~ m{^/($match_domain)});
979: if ($tdom) {
980: if (!exists($timezones->{$tdom})) {
981: my %domdefaults = &Apache::lonnet::get_domain_defaults($tdom);
982: if ($domdefaults{'timezone_def'} eq '') {
983: $timezones->{$tdom} = 'local';
984: } else {
985: $timezones->{$tdom} = $domdefaults{'timezone_def'};
986: }
987: }
988: $timezone = $timezones->{$tdom};
989: }
990: }
991: if ($timezone eq 'local') {
992: $timezone = undef;
993: }
994: }
995: return $timezone;
996: }
997:
1.191 raeburn 998: sub roletable_headers {
999: my ($r,$roleclass,$sortrole,$nochoose) = @_;
1000: my $doheaders;
1001: if ((ref($sortrole) eq 'HASH') && (ref($roleclass) eq 'HASH')) {
1.212 bisitz 1002: $r->print('<br />'
1003: .&Apache::loncommon::start_data_table()
1004: .&Apache::loncommon::start_data_table_header_row()
1005: );
1.191 raeburn 1006: if (!$nochoose) { $r->print('<th> </th>'); }
1.212 bisitz 1007: $r->print('<th>'.&mt('User Role').'</th>'
1008: .'<th>'.&mt('Extent').'</th>'
1009: .'<th>'.&mt('Start').'</th>'
1010: .'<th>'.&mt('End').'</th>'
1011: .&Apache::loncommon::end_data_table_header_row()
1012: );
1.191 raeburn 1013: $doheaders=-1;
1014: my @roletypes = &roletypes();
1015: foreach my $type (@roletypes) {
1016: my $haverole=0;
1017: foreach my $which (sort {uc($a) cmp uc($b)} (keys(%{$sortrole}))) {
1018: if ($roleclass->{$sortrole->{$which}} =~ /^\Q$type\E/) {
1019: $haverole=1;
1020: }
1021: }
1022: if ($haverole) { $doheaders++; }
1023: }
1024: }
1025: return $doheaders;
1026: }
1027:
1028: sub roletypes {
1029: my @types = ('Domain','Construction Space','Course','Unavailable','System');
1030: return @types;
1031: }
1032:
1033: sub print_rolerows {
1034: my ($r,$doheaders,$roleclass,$sortrole,$dcroles,$roletext) = @_;
1035: if ((ref($roleclass) eq 'HASH') && (ref($sortrole) eq 'HASH')) {
1036: my @types = &roletypes();
1037: foreach my $type (@types) {
1038: my $output;
1039: foreach my $which (sort {uc($a) cmp uc($b)} (keys(%{$sortrole}))) {
1040: if ($roleclass->{$sortrole->{$which}} =~ /^\Q$type\E/) {
1041: if (ref($roletext) eq 'HASH') {
1042: $output.=$roletext->{$sortrole->{$which}};
1043: if ($sortrole->{$which} =~ m-dc\./($match_domain)/-) {
1044: if (ref($dcroles) eq 'HASH') {
1045: if ($dcroles->{$1}) {
1.192 raeburn 1046: $output .= &adhoc_roles_row($1,'');
1.191 raeburn 1047: }
1048: }
1049: }
1050: }
1051: }
1052: }
1053: if ($output) {
1054: if ($doheaders > 0) {
1.212 bisitz 1055: $r->print(&Apache::loncommon::start_data_table_empty_row()
1056: .'<td align="center" colspan="5">'
1057: .&mt($type)
1058: .'</td>'
1059: .&Apache::loncommon::end_data_table_empty_row()
1060: );
1.191 raeburn 1061: }
1062: $r->print($output);
1063: }
1064: }
1065: }
1066: }
1067:
1068: sub findcourse_advice {
1069: my ($r) = @_;
1070: my $domdesc = &Apache::lonnet::domain($env{'user.domain'},'description');
1.201 raeburn 1071: my $esc_dom = &HTML::Entities::encode($env{'user.domain'},'"<>&');
1.200 raeburn 1072: if (&Apache::lonnet::auto_run(undef,$env{'user.domain'})) {
1.191 raeburn 1073: $r->print(&mt('If you were expecting to see an active role listed for a particular course in the [_1] domain, it may be missing for one of the following reasons:',$domdesc).'
1074: <ul>
1075: <li>'.&mt('The course has yet to be created.').'</li>
1076: <li>'.&mt('Automatic enrollment of registered students has not been enabled for the course.').'</li>
1077: <li>'.&mt('You are in a section of course for which automatic enrollment in the corresponding LON-CAPA course is not active.').'</li>
1078: <li>'.&mt('The start date for automated enrollment has yet to be reached.').'</li>
1079: <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>
1080: </ul>');
1081: } else {
1082: $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 />');
1083: }
1.201 raeburn 1084: $r->print('<p>'.&mt('The [_1]Course Catalog[_2] provides information about all [_3] classes for which LON-CAPA courses have been created.','<a href="/adm/coursecatalog?showdom='.$esc_dom.'">','</a>',$domdesc).'<br />');
1.191 raeburn 1085: $r->print(&mt('You can search the course catalog for courses which permit self-enrollment, if you would like to enroll in a course.').'</p>');
1.216 raeburn 1086: &queued_selfenrollment($r);
1087: return;
1088: }
1089:
1090: sub queued_selfenrollment {
1091: my ($r) = @_;
1092: my %selfenrollrequests = &Apache::lonnet::dump('selfenrollrequests');
1093: my %reqs_by_date;
1094: foreach my $item (keys(%selfenrollrequests)) {
1095: if (ref($selfenrollrequests{$item}) eq 'HASH') {
1096: if ($selfenrollrequests{$item}{'status'} eq 'request') {
1097: if ($selfenrollrequests{$item}{'timestamp'}) {
1098: push(@{$reqs_by_date{$selfenrollrequests{$item}{'timestamp'}}},$item);
1099: }
1100: }
1101: }
1102: }
1103: if (keys(%reqs_by_date)) {
1104: my $rolename = &Apache::lonnet::plaintext('st');
1105: $r->print('<b>'.&mt('Enrollment requests pending Course Coordinator approval').'</b><br />'.
1106: &Apache::loncommon::start_data_table().
1107: &Apache::loncommon::start_data_table_header_row().
1108: '<th>'.&mt('Date requested').'</th><th>'.&mt('Course title').'</th>'.
1109: '<th>'.&mt('User role').'</th><th>'.&mt('Section').'</th>'.
1110: &Apache::loncommon::end_data_table_header_row());
1111: my @sorted = sort { $a <=> $b } (keys(%reqs_by_date));
1112: foreach my $item (@sorted) {
1113: if (ref($reqs_by_date{$item}) eq 'ARRAY') {
1114: foreach my $crs (@{$reqs_by_date{$item}}) {
1115: my %courseinfo = &Apache::lonnet::coursedescription($crs);
1116: my $usec = $selfenrollrequests{$crs}{'section'};
1117: if ($usec eq '') {
1118: $usec = &mt('No section');
1119: }
1120: $r->print(&Apache::loncommon::start_data_table_row().
1121: '<td>'.&Apache::lonlocal::locallocaltime($item).'</td>'.
1122: '<td>'.$courseinfo{'description'}.'</td>'.
1123: '<td>'.$rolename.'</td><td>'.$usec.'</td>'.
1124: &Apache::loncommon::end_data_table_row());
1125: }
1126: }
1127: }
1128: $r->print(&Apache::loncommon::end_data_table());
1129: }
1.191 raeburn 1130: return;
1131: }
1132:
1.175 albertel 1133: sub privileges_info {
1134: my ($which) = @_;
1135: my $output;
1136:
1137: $which ||= $env{'request.role'};
1138:
1139: foreach my $envkey (sort(keys(%env))) {
1140: next if ($envkey!~/^user\.priv\.\Q$which\E\.(.*)/);
1141:
1142: my $where=$1;
1143: my $ttype;
1144: my $twhere;
1145: my (undef,$tdom,$trest,$tsec)=split(m{/},$where);
1146: if ($trest) {
1147: if ($env{'course.'.$tdom.'_'.$trest.'.description'} eq 'ca') {
1148: $ttype='Construction Space';
1149: $twhere='User: '.$trest.', Domain: '.$tdom;
1150: } else {
1151: $ttype= &Apache::loncommon::course_type($tdom.'_'.$trest);
1152: $twhere=$env{'course.'.$tdom.'_'.$trest.'.description'};
1153: if ($tsec) {
1154: my $sec_type = 'Section';
1155: if (exists($env{"user.role.gr.$where"})) {
1156: $sec_type = 'Group';
1157: }
1158: $twhere.=' ('.$sec_type.': '.$tsec.')';
1159: }
1160: }
1161: } elsif ($tdom) {
1162: $ttype='Domain';
1163: $twhere=$tdom;
1164: } else {
1165: $ttype='System';
1166: $twhere='/';
1167: }
1.204 bisitz 1168: $output .= "\n<h3>".&mt($ttype).': '.$twhere.'</h3>'."\n<ul>";
1.175 albertel 1169: foreach my $priv (sort(split(/:/,$env{$envkey}))) {
1170: next if (!$priv);
1171:
1172: my ($prv,$restr)=split(/\&/,$priv);
1173: my $trestr='';
1174: if ($restr ne 'F') {
1175: $trestr.=' ('.
1176: join(', ',
1177: map { &Apache::lonnet::plaintext($_) }
1178: (split('',$restr))).') ';
1179: }
1180: $output .= "\n\t".
1181: '<li>'.&Apache::lonnet::plaintext($prv).$trestr.'</li>';
1182: }
1183: $output .= "\n".'</ul>';
1184: }
1185: return $output;
1186: }
1187:
1.110 raeburn 1188: sub build_roletext {
1.212 bisitz 1189: my ($trolecode,$tdom,$trest,$tstatus,$tryagain,$advanced,$tremark,$tbg,$trole,$twhere,$tpstart,$tpend,$nochoose,$button,$switchserver,$reinit) = @_;
1190: my $roletext=&Apache::loncommon::start_data_table_row();
1.132 albertel 1191: my $is_dc=($trolecode =~ m/^dc\./);
1192: my $rowspan=($is_dc) ? ''
1193: : ' rowspan="2" ';
1194:
1.110 raeburn 1195: unless ($nochoose) {
1.134 www 1196: my $buttonname=$trolecode;
1197: $buttonname=~s/\W//g;
1.110 raeburn 1198: if (!$button) {
1199: if ($switchserver) {
1.212 bisitz 1200: $roletext.='<td'.$rowspan.' class="'.$tbg.'">'
1201: .'<a href="/adm/switchserver?'.$switchserver.'">'
1202: .&mt('Switch Server')
1203: .'</a></td>';
1.110 raeburn 1204: } else {
1.212 bisitz 1205: $roletext.=('<td'.$rowspan.' class="'.$tbg.'"> </td>');
1.110 raeburn 1206: }
1207: } elsif ($tstatus eq 'is') {
1.212 bisitz 1208: $roletext.='<td'.$rowspan.' class="'.$tbg.'">'.
1209: '<input name="'.$buttonname.'" type="button" value="'.
1.134 www 1210: &mt('Select').'" onClick="javascript:enterrole(this.form,\''.
1.192 raeburn 1211: $trolecode."','".$buttonname.'\');" /></td>';
1.110 raeburn 1212: } elsif ($tryagain) {
1213: $roletext.=
1.212 bisitz 1214: '<td'.$rowspan.' class="'.$tbg.'">'.
1215: '<input name="'.$buttonname.'" type="button" value="'.
1.134 www 1216: &mt('Try Selecting Again').'" onClick="javascript:enterrole(this.form,\''.
1.192 raeburn 1217: $trolecode."','".$buttonname.'\');" /></td>';
1.110 raeburn 1218: } elsif ($advanced) {
1219: $roletext.=
1.212 bisitz 1220: '<td'.$rowspan.' class="'.$tbg.'">'.
1221: '<input name="'.$buttonname.'" type="button" value="'.
1.134 www 1222: &mt('Re-Initialize').'" onClick="javascript:enterrole(this.form,\''.
1.192 raeburn 1223: $trolecode."','".$buttonname.'\');" /></td>';
1.209 raeburn 1224: } elsif ($reinit) {
1225: $roletext.=
1.212 bisitz 1226: '<td'.$rowspan.' class="'.$tbg.'">'.
1227: '<input name="'.$buttonname.'" type="button" value="'.
1.209 raeburn 1228: &mt('Re-Select').'" onClick="javascript:enterrole(this.form,\''.
1229: $trolecode."','".$buttonname.'\');" /></td>';
1.110 raeburn 1230: } else {
1.209 raeburn 1231: $roletext.=
1.212 bisitz 1232: '<td'.$rowspan.' class="'.$tbg.'">'.
1233: '<input name="'.$buttonname.'" type="button" value="'.
1.209 raeburn 1234: &mt('Re-Initialize').'" onClick="javascript:enterrole(this.form,\''.
1235: $trolecode."','".$buttonname.'\');" /></td>';
1.110 raeburn 1236: }
1237: }
1.165 albertel 1238: if ($trolecode !~ m/^(dc|ca|au|aa)\./) {
1239: $tremark.=&Apache::lonannounce::showday(time,1,
1240: &Apache::lonannounce::readcalendar($tdom.'_'.$trest));
1241: }
1.212 bisitz 1242: $roletext.='<td>'.$trole.'</td>'
1243: .'<td>'.$twhere.'</td>'
1244: .'<td>'.$tpstart.'</td>'
1245: .'<td>'.$tpend.'</td>'
1246: .&Apache::loncommon::end_data_table_row();
1.132 albertel 1247: if (!$is_dc) {
1.212 bisitz 1248: $roletext.=&Apache::loncommon::continue_data_table_row()
1249: .'<td colspan="4">'
1250: .$tremark.' '
1251: .'</td>'
1252: .&Apache::loncommon::end_data_table_row();
1.132 albertel 1253: }
1.110 raeburn 1254: return $roletext;
1255: }
1256:
1.202 raeburn 1257: sub check_needs_switchserver {
1258: my ($possiblerole) = @_;
1259: my $needs_switchserver;
1260: my ($role,$where) = split(/\./,$possiblerole,2);
1261: my (undef,$tdom,$twho) = split(/\//,$where);
1262: my ($server_status,$home);
1263: if (($role eq 'ca') || ($role eq 'aa')) {
1264: ($server_status,$home) = &check_author_homeserver($twho,$tdom);
1265: } else {
1266: ($server_status,$home) = &check_author_homeserver($env{'user.name'},
1267: $env{'user.domain'});
1268: }
1269: if ($server_status eq 'switchserver') {
1270: $needs_switchserver = 1;
1271: }
1272: return $needs_switchserver;
1273: }
1274:
1.193 raeburn 1275: sub check_author_homeserver {
1.183 www 1276: my ($uname,$udom)=@_;
1.193 raeburn 1277: if (($uname eq '') || ($udom eq '')) {
1278: return ('fail','');
1279: }
1.183 www 1280: my $home = &Apache::lonnet::homeserver($uname,$udom);
1.193 raeburn 1281: if (&Apache::lonnet::host_domain($home) ne $udom) {
1282: return ('fail',$home);
1283: }
1.183 www 1284: my @ids=&Apache::lonnet::current_machine_ids();
1.193 raeburn 1285: if (grep(/^\Q$home\E$/,@ids)) {
1286: return ('ok',$home);
1287: } else {
1288: return ('switchserver',$home);
1.183 www 1289: }
1290: }
1291:
1.104 raeburn 1292: sub check_fordc {
1293: my ($dcroles,$then) = @_;
1294: my $numdc = 0;
1.118 albertel 1295: if ($env{'user.adv'}) {
1296: foreach my $envkey (sort keys %env) {
1.170 albertel 1297: if ($envkey=~/^user\.role\.dc\.\/($match_domain)\/$/) {
1.104 raeburn 1298: my $dcdom = $1;
1299: my $livedc = 1;
1.118 albertel 1300: my ($tstart,$tend)=split(/\./,$env{$envkey});
1.105 raeburn 1301: if ($tstart && $tstart>$then) { $livedc = 0; }
1302: if ($tend && $tend <$then) { $livedc = 0; }
1.104 raeburn 1303: if ($livedc) {
1304: $$dcroles{$dcdom} = $envkey;
1.105 raeburn 1305: $numdc++;
1.104 raeburn 1306: }
1307: }
1308: }
1309: }
1310: return $numdc;
1311: }
1312:
1.185 raeburn 1313: sub adhoc_course_role {
1314: my ($then) = @_;
1315: my ($cdom,$cnum);
1.201 raeburn 1316: $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
1317: $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
1.185 raeburn 1318: if (&check_forcc($cdom,$cnum,$then)) {
1319: my $setprivs;
1.198 raeburn 1320: if (!defined($env{'user.role.'.$env{'form.switchrole'}})) {
1.185 raeburn 1321: $setprivs = 1;
1322: } else {
1.198 raeburn 1323: my ($start,$end) = split(/\./,$env{'user.role.'.$env{'form.switchrole'}});
1.185 raeburn 1324: if (($start && ($start>$then || $start == -1)) ||
1325: ($end && $end<$then)) {
1326: $setprivs = 1;
1327: }
1328: }
1329: if ($setprivs) {
1.198 raeburn 1330: if ($env{'form.switchrole'} =~ m-^(in|ta|ep|ad|st|cr)([\w/]*)\./\Q$cdom\E/\Q$cnum\E/?(\w*)$-) {
1.185 raeburn 1331: my $role = $1;
1332: my $custom_role = $2;
1333: my $usec = $3;
1334: if ($role eq 'cr') {
1.199 raeburn 1335: if ($custom_role =~ m-^/$match_domain/$match_username/\w+$-) {
1.185 raeburn 1336: $role .= $custom_role;
1337: } else {
1338: return;
1339: }
1340: }
1.208 raeburn 1341: my (%userroles,%newrole,%newgroups,%group_privs);
1342: my %cgroups =
1343: &Apache::lonnet::get_active_groups($env{'user.domain'},
1344: $env{'user.name'},$cdom,$cnum);
1345: foreach my $group (keys(%cgroups)) {
1346: $group_privs{$group} =
1347: $env{'user.priv.cc./'.$cdom.'/'.$cnum.'./'.$cdom.'/'.$cnum.'/'.$group};
1348: }
1349: $newgroups{'/'.$cdom.'/'.$cnum} = \%group_privs;
1.185 raeburn 1350: my $area = '/'.$cdom.'/'.$cnum;
1351: my $spec = $role.'.'.$area;
1352: if ($usec ne '') {
1353: $spec .= '/'.$usec;
1354: $area .= '/'.$usec;
1355: }
1356: &Apache::lonnet::standard_roleprivs(\%newrole,$role,$cdom,$spec,$cnum,$area);
1.208 raeburn 1357: &Apache::lonnet::set_userprivs(\%userroles,\%newrole,\%newgroups);
1.185 raeburn 1358: my $adhocstart = $then-1;
1359: $userroles{'user.role.'.$spec} = $adhocstart.'.';
1.186 raeburn 1360: &Apache::lonnet::appenv(\%userroles,[$role,'cm']);
1.185 raeburn 1361: }
1362: }
1363: }
1364: return;
1365: }
1366:
1367: sub check_forcc {
1368: my ($cdom,$cnum,$then) = @_;
1369: my $is_cc;
1370: if ($cdom ne '' && $cnum ne '') {
1371: if (&Apache::lonnet::is_course($cdom,$cnum)) {
1372: my $envkey = 'user.role.cc./'.$cdom.'/'.$cnum;
1373: if (defined($env{$envkey})) {
1374: $is_cc = 1;
1375: my ($tstart,$tend)=split(/\./,$env{$envkey});
1376: if ($tstart && $tstart>$then) { $is_cc = 0; }
1377: if ($tend && $tend <$then) { $is_cc = 0; }
1378: }
1379: }
1380: }
1381: return $is_cc;
1382: }
1383:
1.108 raeburn 1384: sub courselink {
1.193 raeburn 1385: my ($dcdom,$rowtype) = @_;
1.109 raeburn 1386: my $courseform=&Apache::loncommon::selectcourse_link
1.152 raeburn 1387: ('rolechoice','dccourse'.$rowtype.'_'.$dcdom,
1388: 'dcdomain'.$rowtype.'_'.$dcdom,'coursedesc'.$rowtype.'_'.
1.173 albertel 1389: $dcdom,$dcdom,undef);
1.138 raeburn 1390: my $hiddenitems = '<input type="hidden" name="dcdomain'.$rowtype.'_'.$dcdom.'" value="'.$dcdom.'" />'.
1391: '<input type="hidden" name="origdom'.$rowtype.'_'.$dcdom.'" value="'.$dcdom.'" />'.
1392: '<input type="hidden" name="dccourse'.$rowtype.'_'.$dcdom.'" value="" />'.
1393: '<input type="hidden" name="coursedesc'.$rowtype.'_'.$dcdom.'" value="" />';
1.112 raeburn 1394: return $courseform.$hiddenitems;
1.109 raeburn 1395: }
1396:
1397: sub coursepick_jscript {
1.184 raeburn 1398: my %lt = &Apache::lonlocal::texthash(
1399: plsu => "Please use the 'Select Course' link to open a separate pick course window where you may select the course you wish to enter.",
1400: youc => 'You can only use this screen to select courses in the current domain.',
1401: );
1.104 raeburn 1402: my $verify_script = <<"END";
1.179 raeburn 1403: <script type="text/javascript">
1.108 raeburn 1404: function verifyCoursePick(caller) {
1405: var numbutton = getIndex(caller)
1.112 raeburn 1406: var pickedCourse = document.rolechoice.elements[numbutton+4].value
1407: var pickedDomain = document.rolechoice.elements[numbutton+2].value
1408: if (document.rolechoice.elements[numbutton+2].value == document.rolechoice.elements[numbutton+3].value) {
1.104 raeburn 1409: if (pickedCourse != '') {
1.108 raeburn 1410: if (numbutton != -1) {
1411: var courseTarget = "cc./"+pickedDomain+"/"+pickedCourse
1412: document.rolechoice.elements[numbutton+1].name = courseTarget
1413: document.rolechoice.submit()
1414: }
1.104 raeburn 1415: }
1416: else {
1.184 raeburn 1417: alert("$lt{'plsu'}");
1.104 raeburn 1418: }
1419: }
1420: else {
1.184 raeburn 1421: alert("$lt{'youc'}")
1.104 raeburn 1422: }
1423: }
1.109 raeburn 1424: function getIndex(caller) {
1.108 raeburn 1425: for (var i=0;i<document.rolechoice.elements.length;i++) {
1.109 raeburn 1426: if (document.rolechoice.elements[i] == caller) {
1.108 raeburn 1427: return i;
1428: }
1429: }
1430: return -1;
1431: }
1.104 raeburn 1432: </script>
1433: END
1.109 raeburn 1434: return $verify_script;
1.104 raeburn 1435: }
1436:
1.193 raeburn 1437: sub coauthorlink {
1438: my ($dcdom,$rowtype) = @_;
1439: my $coauthorform=&Apache::loncommon::selectauthor_link('rolechoice',$dcdom);
1440: my $hiddenitems = '<input type="hidden" name="adhoccauname'.$rowtype.'_'.$dcdom.'" value="" />';
1441: return $coauthorform.$hiddenitems;
1442: }
1443:
1.113 raeburn 1444: sub display_cc_role {
1445: my $rolekey = shift;
1446: my $roletext;
1.118 albertel 1447: my $advanced = $env{'user.adv'};
1448: my $tryagain = $env{'form.tryagain'};
1.113 raeburn 1449: unless ($rolekey =~/^error\:/) {
1.171 albertel 1450: if ($rolekey =~ m-^user\.role.cc\./($match_domain)/($match_courseid)$-) {
1.113 raeburn 1451: my $tcourseid = $1.'_'.$2;
1452: my $trolecode = 'cc./'.$1.'/'.$2;
1453: my $twhere;
1.152 raeburn 1454: my $ttype;
1.212 bisitz 1455: my $tbg='LC_roles_is';
1.113 raeburn 1456: my %newhash=&Apache::lonnet::coursedescription($tcourseid);
1457: if (%newhash) {
1458: $twhere=$newhash{'description'}.
1.211 tempelho 1459: ' <span style="LC_fontsize_small">'.
1.212 bisitz 1460: &Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$2,$1).
1.211 tempelho 1461: '</span>';
1.153 raeburn 1462: $ttype = $newhash{'type'};
1.113 raeburn 1463: } else {
1464: $twhere=&mt('Currently not available');
1.118 albertel 1465: $env{'course.'.$tcourseid.'.description'}=$twhere;
1.110 raeburn 1466: }
1.153 raeburn 1467: my $trole = &Apache::lonnet::plaintext('cc',$ttype);
1.113 raeburn 1468: $twhere.="<br />".&mt('Domain').":".$1;
1.212 bisitz 1469: $roletext = &build_roletext($trolecode,$1,$2,'is',$tryagain,$advanced,'',$tbg,$trole,$twhere,'','','',1,'');
1.104 raeburn 1470: }
1471: }
1.152 raeburn 1472: return ($roletext);
1.104 raeburn 1473: }
1474:
1.192 raeburn 1475: sub adhoc_roles_row {
1.138 raeburn 1476: my ($dcdom,$rowtype) = @_;
1.212 bisitz 1477: my $output = &Apache::loncommon::continue_data_table_row()
1478: .' <td colspan="5">'
1479: .'<table><tr><td>'
1480: .&mt('[_1]Ad hoc[_2] roles in domain [_3] --'
1481: ,'<span class="LC_cusr_emph">','</span>',$dcdom)
1482: .'</td>'
1483: .'<td>';
1.193 raeburn 1484: my $selectcclink = &courselink($dcdom,$rowtype);
1.173 albertel 1485: my $ccrole = &Apache::lonnet::plaintext('cc');
1.182 www 1486: my $carole = &Apache::lonnet::plaintext('ca');
1.193 raeburn 1487: my $selectcalink = &coauthorlink($dcdom,$rowtype);
1.212 bisitz 1488: $output.=&mt('[_1]: [_2]',$ccrole,$selectcclink)
1489: .'<br /></td>'
1490: .'<td> </td>'
1491: .'<td>'.&mt('[_1]: [_2]',$carole,$selectcalink).'<br /></td>'
1492: .'</tr></table>'
1493: .'</td>'
1494: .&Apache::loncommon::end_data_table_row();
1.108 raeburn 1495: return $output;
1496: }
1497:
1.104 raeburn 1498: sub recent_filename {
1499: my $area=shift;
1.149 www 1500: return 'nohist_recent_'.&escape($area);
1.104 raeburn 1501: }
1502:
1.139 raeburn 1503: sub courseloadpage {
1504: my ($courseid) = @_;
1505: my $startpage;
1.144 albertel 1506: my %entry_settings = &Apache::lonnet::get('nohist_whatsnew',
1507: [$courseid.':courseinit']);
1.139 raeburn 1508: my ($tmp) = %entry_settings;
1.144 albertel 1509: unless ($tmp =~ /^error: 2 /) {
1.139 raeburn 1510: $startpage = $entry_settings{$courseid.':courseinit'};
1511: }
1512: if ($startpage eq '') {
1513: if (exists($env{'environment.course_init_display'})) {
1514: $startpage = $env{'environment.course_init_display'};
1515: }
1516: }
1517: return $startpage;
1518: }
1519:
1.1 harris41 1520: 1;
1521: __END__
1.32 harris41 1522:
1523: =head1 NAME
1524:
1525: Apache::lonroles - User Roles Screen
1526:
1527: =head1 SYNOPSIS
1528:
1529: Invoked by /etc/httpd/conf/srm.conf:
1530:
1531: <Location /adm/roles>
1532: PerlAccessHandler Apache::lonacc
1533: SetHandler perl-script
1534: PerlHandler Apache::lonroles
1535: ErrorDocument 403 /adm/login
1536: ErrorDocument 500 /adm/errorhandler
1537: </Location>
1.64 bowersj2 1538:
1539: =head1 OVERVIEW
1540:
1541: =head2 Choosing Roles
1542:
1543: C<lonroles> is a handler that allows a user to switch roles in
1544: mid-session. LON-CAPA attempts to work with "No Role Specified", the
1545: default role that a user has before selecting a role, as widely as
1546: possible, but certain handlers for example need specification which
1547: course they should act on, etc. Both in this scenario, and when the
1548: handler determines via C<lonnet>'s C<&allowed> function that a certain
1549: action is not allowed, C<lonroles> is used as error handler. This
1550: allows the user to select another role which may have permission to do
1551: what they were trying to do. C<lonroles> can also be accessed via the
1552: B<CRS> button in the Remote Control.
1553:
1554: =begin latex
1555:
1556: \begin{figure}
1557: \begin{center}
1558: \includegraphics[width=0.45\paperwidth,keepaspectratio]{Sample_Roles_Screen}
1559: \caption{\label{Sample_Roles_Screen}Sample Roles Screen}
1560: \end{center}
1561: \end{figure}
1562:
1563: =end latex
1564:
1565: =head2 Role Initialization
1566:
1567: 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 1568:
1569: =head1 INTRODUCTION
1570:
1571: This module enables a user to select what role he wishes to
1572: operate under (instructor, student, teaching assistant, course
1573: coordinator, etc). These roles are pre-established by the actions
1574: of upper-level users.
1575:
1576: This is part of the LearningOnline Network with CAPA project
1577: described at http://www.lon-capa.org.
1578:
1579: =head1 HANDLER SUBROUTINE
1580:
1581: This routine is called by Apache and mod_perl.
1582:
1583: =over 4
1584:
1585: =item *
1586:
1587: Roles Initialization (yes/no)
1588:
1589: =item *
1590:
1591: Get Error Message from Environment
1592:
1593: =item *
1594:
1595: Who is this?
1596:
1597: =item *
1598:
1599: Generate Page Output
1600:
1601: =item *
1602:
1603: Choice or no choice
1604:
1605: =item *
1606:
1607: Table
1608:
1609: =item *
1610:
1611: Privileges
1612:
1613: =back
1614:
1615: =cut
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