Annotation of loncom/interface/selfenroll.pm, revision 1.7

1.1       raeburn     1: # The LearningOnline Network
                      2: # Allow users to self-enroll in a course
                      3: #
1.7     ! raeburn     4: # $Id: selfenroll.pm,v 1.6 2008/06/30 17:04:11 raeburn Exp $
1.1       raeburn     5: #
                      6: # Copyright Michigan State University Board of Trustees
                      7: #
                      8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
                      9: #
                     10: # LON-CAPA is free software; you can redistribute it and/or modify
                     11: # it under the terms of the GNU General Public License as published by
                     12: # the Free Software Foundation; either version 2 of the License, or
                     13: # (at your option) any later version.
                     14: #
                     15: # LON-CAPA is distributed in the hope that it will be useful,
                     16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
                     17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
                     18: # GNU General Public License for more details.
                     19: #
                     20: # You should have received a copy of the GNU General Public License
                     21: # along with LON-CAPA; if not, write to the Free Software
                     22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
                     23: #
                     24: # /home/httpd/html/adm/gpl.txt
                     25: #
                     26: # http://www.lon-capa.org/
                     27: #
                     28: #
                     29: package Apache::selfenroll;
                     30: 
                     31: use strict;
                     32: use Apache::Constants qw(:common);
                     33: use Apache::lonnet;
                     34: use Apache::loncommon;
                     35: use Apache::lonlocal;
                     36: use LONCAPA qw(:DEFAULT :match);
                     37: 
                     38: sub handler {
                     39:     my $r = shift;
                     40:     &Apache::loncommon::content_type($r,'text/html');
                     41:     $r->send_http_header;
                     42:     if ($r->header_only) {
                     43:         return OK;
                     44:     }
                     45:     my $handle = &Apache::lonnet::check_for_valid_session($r);
                     46:     my $lonidsdir=$r->dir_config('lonIDsDir');
                     47:     if ($handle ne '') {
                     48:         &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
                     49:     }
                     50:     &Apache::lonacc::get_posted_cgi($r);
                     51:     &Apache::lonlocal::get_language_handle($r);
                     52:     &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['cid']);
                     53:     my ($coursechk,$cid) = &validate_course_id($env{'form.cid'});
                     54:     my $start_page =
                     55:         &Apache::loncommon::start_page('Self-enroll in a LON-CAPA course','',
                     56:                                        {'no_inline_link'   => 1,});
                     57:     $r->print($start_page);
                     58:     &Apache::lonhtmlcommon::clear_breadcrumbs();
                     59:     &Apache::lonhtmlcommon::add_breadcrumb
                     60:     ({href=>"/adm/selfenroll?cid=$cid",
                     61:       text=>"Self-enroll"});
                     62:     $r->print(&Apache::lonhtmlcommon::breadcrumbs('Self-enroll in course'));
                     63:     if ($coursechk ne 'ok') {
                     64:         $r->print(&mt('Invalid domain or course number'));
                     65:         $r->print(&Apache::loncommon::end_page());
                     66:         return OK;
                     67:     }
                     68:     my ($cdom,$cnum,$canenroll,$selfenroll_types,$selfenroll_registered,
1.3       raeburn    69:         @cancreate,$knownuser,$selfenroll_access_start,$selfenroll_access_end,
1.1       raeburn    70:         $selfenroll_section,%curr_role,%coursehash);
                     71:     my $now = time;
                     72:     %coursehash = &Apache::lonnet::coursedescription($cid);
                     73:     $cdom = $coursehash{'domain'};
                     74:     $cnum = $coursehash{'num'};
                     75:     $selfenroll_types = $coursehash{'internal.selfenroll_types'};
                     76:     $selfenroll_registered =  $coursehash{'internal.selfenroll_registered'};
                     77:     $selfenroll_section = $coursehash{'internal.selfenroll_section'};
                     78:     $selfenroll_access_start =  $coursehash{'internal.selfenroll_start_access'};
                     79:     $selfenroll_access_end =  $coursehash{'internal.selfenroll_end_access'};
                     80:     if ($selfenroll_types ne '') {
                     81:         my $start = $coursehash{'internal.selfenroll_start_date'};
                     82:         my $end = $coursehash{'internal.selfenroll_end_date'};
                     83:         if (($start > 0 && $start < $now) && ($end > 0 && $end > $now)) {
                     84:             $canenroll = 1;
                     85:         }
                     86:     }
                     87:     if (!$canenroll) {
                     88:         $r->print(&mt('Self-enrollment is not currently available for this course.').'<br /><br />');
                     89:     }
                     90:     $knownuser = &user_is_known();
                     91:     if ($knownuser) {
                     92:         foreach my $key (keys(%env)) {
                     93:             if ($key =~ m-^user\.role\.st\./$cdom/$cnum/?(\w*)$-) {
                     94:                 my $sec = $1;
                     95:                 my ($start,$end) = split(/\./,$env{$key});
                     96:                 my $status = 'active';
                     97:                 if (($end) && ($end<=$now)) {
                     98:                     $status = 'previous';
                     99:                 }
                    100:                 if (($start) && ($now<$start)) {
                    101:                     $status = 'future';
                    102:                 }
                    103:                 if ($status eq 'active' || $status eq 'future') {
                    104:                      $curr_role{'status'} = $status;
                    105:                      $curr_role{'section'} = $sec;
1.7     ! raeburn   106:                      if ($curr_role{'section'} eq '') {
        !           107:                          $curr_role{'section'} = &mt('none'); 
        !           108:                      }
1.1       raeburn   109:                      $curr_role{'start'} = &Apache::lonlocal::locallocaltime($start);
                    110:                      $curr_role{'role'} = 'st./'.$cdom.'/'.$cnum;
                    111:                      if ($sec ne '') {
                    112:                          $curr_role{'role'} .= '/'.$sec; 
                    113:                      }
                    114:                 }
                    115:             }
                    116:         }
                    117:     }
                    118:     if (!$canenroll) {
                    119:         if (keys(%curr_role)) {
                    120:             $r->print(&has_role(%curr_role));
                    121:         }
                    122:         $r->print(&Apache::loncommon::end_page());
                    123:         return OK;
                    124:     }
1.3       raeburn   125:     @cancreate = &can_create($cdom);
1.1       raeburn   126:     my ($login_path,$firsturl,$create_path,$sso_url,$missing_formitem);
                    127:     $login_path = '/adm/login';
                    128:     $firsturl= '/adm/selfenroll?cid='.$cid;
                    129:     $create_path = '/adm/createaccount';
                    130:     $sso_url = $r->dir_config('lonSSOReloginServer');
                    131:     if ($sso_url eq '') {
                    132:         $sso_url = $login_path;
                    133:     }
                    134:     my $missing_formitem = &mt('The link to the requested page could not be followed.')."\\n".&mt('The placeholder for the courseID is absent.');
                    135:     if ($knownuser) {
                    136:         if (keys(%curr_role)) {
                    137:             $r->print(&has_role(%curr_role));
                    138:             return OK;
                    139:         }
                    140:         &process_self_enroll($r,$cdom,$cnum,$selfenroll_types,$selfenroll_registered,
                    141:                              $selfenroll_access_start,$selfenroll_access_end,
                    142:                              $selfenroll_section,$now);
1.3       raeburn   143:     } elsif (@cancreate > 0) {
1.1       raeburn   144:         $r->print(<<END);
                    145: <script type="text/javascript">
                    146: function setPath(formaction,item,arg) {
                    147:     document.forms.logmein.action = formaction;
                    148:     var itemid = getIndexByName("setting");
                    149:     if (itemid > -1) {
                    150:         document.logmein.elements[itemid].name = item;
                    151:         document.logmein.elements[itemid].value = arg;
                    152:         document.logmein.submit();
                    153:     } else {
                    154:         alert("$missing_formitem");
                    155:     }
                    156:     return;
                    157: }
                    158: 
                    159: function getIndexByName(item) {
                    160:     for (var i=0;i<document.logmein.elements.length;i++) {
                    161:         if (document.logmein.elements[i].name == item) {
                    162:             return i;
                    163:         }
                    164:     }
                    165:     return -1;
                    166: }
                    167: </script>
                    168: END
                    169:         $r->print(&mt('You need to be logged into LON-CAPA to self-enroll in a course.').'<ul><li>'.&mt('If you have an account in LON-CAPA, [_1]log-in[_2].','<a href="javascript:setPath('."'$login_path','firsturl','$firsturl'".')">','</a>').'</li>');
1.3       raeburn   170:         if (@cancreate > 1) {
                    171:             $r->print('<li>'.&mt('Otherwise:').'<br />');
                    172:             my $count = 0;
                    173:             foreach my $type ('sso','login','email') { 
1.4       raeburn   174:                 if (($count > 0) && ($count <@cancreate)) {
1.3       raeburn   175:                     $r->print('&nbsp;, '.&mt('or').'<br />');
                    176:                 }
                    177:                 if (grep(/^$type$/,@cancreate)) {
                    178:                     if ($type eq 'sso') {
                    179:                         $r->print('&nbsp;&nbsp;'.&mt("if you have an institutional log-in, use your institution's [_1]single sign on page[_2] to log-in, then create an account",'<a href="javascript:setPath('."'$sso_url','firsturl','$firsturl'".')">','</a>'));
                    180:                     } elsif ($type eq 'login') {
                    181:                         $r->print('&nbsp;&nbsp;'.&mt('if you have an institutional login, [_1]create an account[_2]','<a href="javascript:setPath('."'$create_path','courseid','$cid'".')">','</a>'));
                    182:                     } elsif ($type eq 'email') {
                    183:                         $r->print('&nbsp;&nbsp;'.&mt('you can use an e-mail address to [_1]create an account[_2]','<a href="javascript:setPath('."'$create_path','courseid','$cid'".')">','</a>'));
                    184:                     }
                    185:                     $count ++;
                    186:                 }
                    187:             }
                    188:             $r->print('.<br />');
                    189:         } else {
                    190:             if ($cancreate[0] eq 'login') {
                    191:                 $r->print('<li>'.&mt('Otherwise, if you have an institutional login, [_1]create an account[_2].','<a href="javascript:setPath('."'$create_path','courseid','$cid'".')">','</a>'));
                    192:             } elsif ($cancreate[0] eq 'email') {
                    193:                 $r->print('<li>'.&mt('Otherwise, you will use an e-mail address to [_1]create an account[_2].','<a href="javascript:setPath('."'$create_path','courseid','$cid'".')">','</a>'));
                    194:             } elsif ($cancreate[0] eq 'sso') {
                    195:                 $r->print('<li>'.&mt("Otherwise, use your institution's [_1]single sign on page[_2] to log-in, then create an account.",'<a href="javascript:setPath('."'$sso_url','firsturl','$firsturl'".')">','</a>'));
                    196:             }
1.1       raeburn   197:         }
                    198:         if ($selfenroll_types eq '*') {
                    199:             $r->print('<br />'.&mt('You will have an opportunity to self enroll in the course once the account has been created.').'</li></ul>');
                    200:         } else {
                    201:             $r->print('</li></ul>');
                    202:             my ($enrolltypes,$longtypes,$alldoms) = 
                    203:                 &get_selfenroll_filters($selfenroll_types,$cdom);
                    204:             $r->print(&print_selfenroll_types($longtypes,$cdom));
                    205:         }
                    206:     } else {
                    207:         $r->print(&mt('You must [_1]log-in[_2] to LON-CAPA with an existing account to be able to enroll in this course, as account creation is not permitted when self-enrolling.','<a href="'.$login_path.'">','</a>'));
                    208:         if ($selfenroll_types ne '*') {
                    209:             my ($enrolltypes,$longtypes,$alldoms) =
                    210:                 &get_selfenroll_filters($selfenroll_types);
                    211:             $r->print('<br /><br />'.&print_selfenroll_types($longtypes));
                    212:         }
                    213:     }
                    214:     $r->print('<form name ="logmein" method="post" action="">'."\n".
                    215:               '<input type="hidden" name="setting" value=""/>'."\n".
                    216:               '</form>'."\n".
                    217:               &Apache::loncommon::end_page());
                    218:     return OK;
                    219: }
                    220: 
                    221: sub validate_course_id {
                    222:     my ($cid) = @_;
                    223:     my ($cdom,$cnum) = ($env{'form.cid'} =~ /^($match_domain)_($match_courseid)$/);
                    224:     if ($cdom ne '' && $cnum ne '') {
                    225:         if (&Apache::lonnet::is_course($cdom,$cnum)) {
                    226:             return ('ok',$cid);
                    227:         }
                    228:     } 
                    229:     return;
                    230: }
                    231: 
                    232: sub user_is_known {
                    233:     my $known = 0;
                    234:     if ($env{'user.name'} ne '' && $env{'user.name'} ne 'public'
                    235:         && $env{'user.domain'} ne '' && $env{'user.domain'} ne 'public') {
                    236:         $known = 1;
                    237:     }
                    238:     return $known;
                    239: }
                    240: 
                    241: sub can_create {
                    242:     my ($cdom) = @_;
1.3       raeburn   243:     my @cancreate;
1.1       raeburn   244:     my %domconfig = &Apache::lonnet::get_dom('configuration',['usercreation'],$cdom);
                    245:     if (ref($domconfig{'usercreation'}) eq 'HASH') {
                    246:         if (ref($domconfig{'usercreation'}{'cancreate'}) eq 'HASH') {
                    247:             if ($domconfig{'usercreation'}{'cancreate'}{'selfcreate'} ne 'none') {
1.3       raeburn   248:                 if (ref($domconfig{'usercreation'}{'cancreate'}{'selfcreate'}) eq 'ARRAY') {
                    249:                     @cancreate = @{$domconfig{'usercreation'}{'cancreate'}{'selfcreate'}};
                    250:                 } else {
                    251:                     if (($domconfig{'usercreation'}{'cancreate'}{'selfcreate'} ne 'none') && 
                    252:                         ($domconfig{'usercreation'}{'cancreate'}{'selfcreate'} ne '')) {
                    253:                         @cancreate = ($domconfig{'usercreation'}{'cancreate'}{'selfcreate'});
                    254:                     }
                    255:                 }
1.1       raeburn   256:             }
                    257:         }
                    258:     }
1.3       raeburn   259:     return @cancreate;
1.1       raeburn   260: }
                    261: 
                    262: sub has_role {
                    263:     my (%curr_role) = @_;
                    264:     my $output;
                    265:     if ($curr_role{'status'} eq 'active') {
                    266:           my $rolelink = &jump_to_role($curr_role{'role'});
                    267:           $output = &mt('You currently have an active role (section: "[_1]") in this course.',$curr_role{'section'}).' '.$rolelink;
                    268:     } elsif ($curr_role{'status'} eq 'future') {
                    269:         $output = &mt('You have a role (section: "[_1]") in this course which will become active [_2].',$curr_role{'section'},$curr_role{'start'});
                    270:     }
                    271:     return $output;
                    272: }
                    273: 
                    274: sub process_self_enroll {
                    275:     my ($r,$cdom,$cnum,$selfenroll_types,$selfenroll_registered,
                    276:         $selfenroll_access_start,$selfenroll_access_end,$selfenroll_section,$now) = @_;
                    277:     my $udom = $env{'user.domain'};
                    278:     my $uname = $env{'user.name'};
                    279:     my @info = ['inststatus'];
                    280:     my %userhash = &Apache::lonnet::userenvironment($udom,$uname,@info);
                    281:     my ($enrolltypes,$longtypes,$alldoms) = 
                    282:         &get_selfenroll_filters($selfenroll_types,$udom);
1.6       raeburn   283:     my @inststatuses;
                    284:     if ($userhash{'inststatus'} eq '') {
                    285:         push(@inststatuses,'other'); 
                    286:     } else {
                    287:         my @esc_statuses = split(/:/,$userhash{'inststatus'});
                    288:         @inststatuses = map { &unescape($_); } (@esc_statuses);
1.1       raeburn   289:     }
                    290:     my $selfenroll = 0;
                    291:     if ($alldoms) {
                    292:         $selfenroll = 1;
                    293:     } elsif (ref($enrolltypes) eq 'HASH') {
                    294:         if (ref($enrolltypes->{$udom}) eq 'ARRAY') {
                    295:             if (grep(/^any$/,@{$enrolltypes->{$udom}})) {
                    296:                 $selfenroll = 1;
                    297:             } else {
                    298:                 foreach my $type (@inststatuses) {
                    299:                     if (grep(/^\Q$type\E$/,@{$enrolltypes->{$udom}})) {
                    300:                         $selfenroll = 1;
                    301:                         last;
                    302:                     }
                    303:                 }
                    304:             }
                    305:         }
                    306:     }
                    307:     if ($selfenroll) {
                    308:         my $usec = $selfenroll_section;
                    309:         if ($selfenroll_section eq 'none') {
                    310:             $usec = '';
                    311:         }
                    312:         if ($selfenroll_registered) {
                    313:             my ($registered,$instsec,$message) = &check_registered($cdom,$cnum);
                    314:             $usec = $instsec;
                    315:             if (!$registered) {
1.6       raeburn   316:                 $r->print(&mt('Self-enrollment is restricted to students officially registered for this course.').'<br />');
1.1       raeburn   317:                 if ($message) {
                    318:                     $r->print($message);
                    319:                 } else {
                    320:                     $r->print(&mt('As you are not currently registered for this course, self-enrollment is unavailable.'));
                    321:                 }
                    322:                 return; 
                    323:             } 
                    324:         }
                    325:         my $enrollresult = 
                    326:             &Apache::lonnet::modify_student_enrollment($udom,$uname,undef,undef,undef,
1.6       raeburn   327:                     undef,undef,$usec,$selfenroll_access_end,$selfenroll_access_start,
                    328:                    'manual',undef,$cdom.'_'.$cnum,$selfenroll);
1.1       raeburn   329:         if ($enrollresult eq 'ok') {
                    330:             my (%userroles,%newrole,%newgroups);
                    331:             my $role = 'st';
                    332:             my $area = '/'.$cdom.'/'.$cnum;
                    333:             my $spec = $role.'.'.$area;
                    334:             if ($usec ne '') {
                    335:                 $spec .= '/'.$usec;
                    336:                 $area .= '/'.$usec;
                    337:             }
                    338:             &Apache::lonnet::standard_roleprivs(\%newrole,$role,$cdom,$spec,$cnum,
                    339:                                                 $area);
                    340:             &Apache::lonnet::set_userprivs(\%userroles,\%newrole,%newgroups);
                    341:             $userroles{'user.role.'.$spec} = $selfenroll_access_start.'.'.$selfenroll_access_end;
1.2       raeburn   342:             &Apache::lonnet::appenv(\%userroles,[$role]);
1.1       raeburn   343:             if ($selfenroll_access_end && $selfenroll_access_end <= $now) {
                    344:                 $r->print(&mt('The end date for access to this course for users who self-enroll has passed.').'<br />'.&mt('Consequently, although a new role was created for you in the course, it is an inactive role which does not provide access to the course.'));
                    345:             } else {
                    346:                 $r->print(&mt('Self-enrollment in this course was successful.').'<br />');
                    347:                 my $showstart = &Apache::lonlocal::locallocaltime($selfenroll_access_start);
                    348:                 my $showend = &Apache::lonlocal::locallocaltime($selfenroll_access_end);
                    349:                 if ($selfenroll_access_start && $selfenroll_access_start >$now) {
                    350:                     $r->print(&mt('The start date for access to this course for users who self-enroll has yet to be reached.').'<br />'.&mt('Consequently, although a new role was created for you in the course, you will not be able to select this role until [_1].',$showstart));
                    351:                 } else {
                    352:                     my $newrole = 'st./'.$cdom.'/'.$cnum;
                    353:                     if ($usec ne '') {
                    354:                         $newrole .= '/'.$usec;
                    355:                     }
                    356:                     my $rolelink = &jump_to_role($newrole);
                    357:                     $r->print(&mt('Your new role is available immediately, and will provide access to the course until [_1].',$showend).'<br /><br />'."\n".
                    358:                              $rolelink); 
                    359:                 }
                    360:             }
                    361:         } else {
                    362:             $r->print(&mt('Self-enrollment in this course failed.'));
                    363:             if ($enrollresult ne '') {
                    364:                 $r->print('<span class="LC_error">'.$enrollresult.'</span>');
                    365:             }
                    366:         }
                    367:     } else {
                    368:         $r->print(&mt('You are not permitted to enroll yourself in this course.').'<br />');
                    369:         $r->print(&print_selfenroll_types($longtypes));
                    370:     }
                    371:     return;
                    372: }
                    373: 
                    374: sub jump_to_role {
                    375:     my ($role) = @_;
                    376:     my $output = <<"END";
                    377: <script type="text/javascript">
                    378: function SelectRole() {
                    379:     document.rolechoice.selectrole.value = '1';
                    380:     document.rolechoice.submit();
                    381: }
                    382: </script>
                    383: END
                    384:     $output .= '<a href="javascript:SelectRole()">'."\n". 
                    385:                &mt('Enter course now').'</a>'."\n".
                    386:                '<form name="rolechoice" action="/adm/roles">'."\n".
                    387:                '<input type="hidden" name="selectrole" value="" />'."\n".
                    388:                '<input type="hidden" name="'.$role.'" value="1" />'."\n".
                    389:                '</form>';
                    390:     return $output;
                    391: }
                    392: 
                    393: sub get_selfenroll_filters {
                    394:     my ($selfenroll_types,$domain) = @_;
                    395:     my (%enrolltypes,%longtypes,$alldoms);
                    396:     my @selfenrolldoms = split(/;/,$selfenroll_types);
                    397:     foreach my $item (@selfenrolldoms) {
                    398:         my ($selfdom,$type_str) = split(/:/,$item);
                    399:         if ($selfdom eq '*') {
                    400:             $alldoms = 1;
                    401:             last;
                    402:         }
                    403:         if ($domain ne '') {
                    404:             next if ($selfdom ne $domain);
                    405:         }
                    406:         if ($selfdom =~ /^$match_domain$/) {
                    407:             if (&Apache::lonnet::domain($selfdom) ne '') {
                    408:                 my @types = split(/,/,$type_str);
                    409:                 my ($othertitle,$usertypes,$types) =
                    410:                     &Apache::loncommon::sorted_inst_types($selfdom);
                    411:                 if (ref($usertypes) eq 'HASH') {
                    412:                     $usertypes->{'any'} = &mt('any');
                    413:                     $usertypes->{'other'} = &mt('other');
                    414:                     @{$enrolltypes{$selfdom}} = @types;
                    415:                     @{$longtypes{$selfdom}} = map {$usertypes->{$_}} @types;
                    416:                 }
                    417:             }
                    418:         }
                    419:     }
                    420:     return (\%enrolltypes,\%longtypes,$alldoms);
                    421: }
                    422: 
                    423: sub print_selfenroll_types {
                    424:     my ($longtypes,$domain) = @_;
                    425:     my $output;
                    426:     if (ref($longtypes) eq 'HASH') {
                    427:         if (keys(%{$longtypes}) > 0) {
                    428:             if ($domain ne '') {
                    429:                 if (ref($longtypes->{$domain}) eq 'ARRAY') {
                    430:                     if (grep(/^any$/,@{$longtypes->{$domain}})) {
                    431:                         $output = &mt('Self-enrollment in this course is only available to users in domain "[_1]".',$domain);
                    432:                     } else {
                    433:                         my $status_str = join(', ',@{$longtypes->{$domain}});
                    434:                         $output = &mt('Self-enrollment in this course is only available to users in domain "[_1]" who have the following status: "[_2]".',$domain,$status_str);
                    435:                     }
                    436:                 }
                    437:             } else {
1.5       bisitz    438:                 $output = &mt('Self-enrollment in this course is only available to users in the following domains (with the following status):').' <ul>';
1.1       raeburn   439:                 foreach my $selfdom (sort(keys(%{$longtypes}))) {
                    440:                     if (ref($longtypes->{$selfdom}) eq 'ARRAY') {
                    441:                         $output .= '<li>'.$selfdom.': '.join(', ',@{$longtypes->{$selfdom}}).'</li>';
                    442:                     }
                    443:                 }
                    444:                 $output .= '</ul>';
                    445:             }
                    446:         } else {
1.5       bisitz    447:             $output = &mt('Self-enrollment is not currently available for this course.');
1.1       raeburn   448:         }
                    449:     }
                    450:     return $output;
                    451: }
                    452: 
                    453: sub check_registered {
                    454:     my ($cdom,$cnum) = @_;
                    455:     my ($registered,$instsec,$message);
                    456:     my %settings = &Apache::lonnet::get('environment',['internal.coursecode',
                    457:                                         'internal.sectionnums',
                    458:                                         'internal.crosslistings'],$cdom,$cnum);
                    459:     my (@allcourses,%LC_code,%affiliates,%reply);
                    460:     &Apache::loncommon::get_institutional_codes(\%settings,\@allcourses,\%LC_code);
                    461:     if (@allcourses > 0) {
                    462:         @{$affiliates{$cnum}} = @allcourses;
                    463:         my $outcome = &Apache::lonnet::fetch_enrollment_query('updatenow',\%affiliates,\%reply,$cdom,$cnum);
                    464:         if ($outcome eq 'ok') {
                    465:             if ($reply{$cnum} > 0) {
                    466:                 foreach my $class (@allcourses) {
                    467:                     my %enrolled;
                    468:                     my $dir = $Apache::lonnet::perlvar{'lonDaemons'};
                    469:                     my %place = &LONCAPA::Enrollment::place_hash();
                    470:                     &LONCAPA::Enrollment::parse_classlist($dir,$cdom,$cnum,$class,
                    471:                              \%place,$LC_code{$class},\%enrolled);
                    472:                     if (defined($enrolled{$env{'user.name'}})) {
                    473:                         $registered = 1;
                    474:                         $instsec = $LC_code{$class};
                    475:                         last;
                    476:                     }
                    477:                 }
                    478:             } else {
                    479:                 $message = &mt('Your registration status could not be verified.');
                    480:             }
                    481:         } else {
                    482:              $message = &mt('Your registration status could not determined, because a problem occurred retrieving data.');
                    483:         }
                    484:     } else {
                    485:         $message = &mt('As no institutional course sections are currently associated with this course, your registration status is undetermined.'); 
                    486:     }
                    487:     return ($registered,$instsec,$message);
                    488: }
                    489: 
                    490: 1;
                    491: 

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