# The LearningOnline Network with CAPA # User Roles Screen # # $Id: lonroles.pm,v 1.122 2005/06/06 22:39:59 raeburn Exp $ # # Copyright Michigan State University Board of Trustees # # This file is part of the LearningOnline Network with CAPA (LON-CAPA). # # LON-CAPA is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # LON-CAPA is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with LON-CAPA; if not, write to the Free Software # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA # # /home/httpd/html/adm/gpl.txt # # http://www.lon-capa.org/ # ### package Apache::lonroles; use strict; use Apache::lonnet; use Apache::lonuserstate(); use Apache::Constants qw(:common); use Apache::File(); use Apache::lonmenu; use Apache::loncommon; use Apache::lonhtmlcommon; use Apache::lonannounce; use Apache::lonlocal; use GDBM_File; sub redirect_user { my ($r,$title,$url,$msg,$launch_nav) = @_; $msg = $title if (! defined($msg)); &Apache::loncommon::content_type($r,'text/html'); &Apache::loncommon::no_cache($r); $r->send_http_header; my $swinfo=&Apache::lonmenu::rawconfig(); my $navwindow; if ($launch_nav eq 'on') { $navwindow.=&Apache::lonnavmaps::launch_win('now'); } else { $navwindow.=&Apache::lonnavmaps::close(); } my $bodytag=&Apache::loncommon::bodytag('Switching Role'); # Note to style police: # This must only replace the spaces, nothing else, or it bombs elsewhere. $url=~s/ /\%20/g; $r->print(<$title $bodytag $navwindow

$msg

Continue ENDREDIR return; } sub handler { my $r = shift; my $now=time; my $then=$env{'user.login.time'}; my $envkey; my %dcroles = (); my $numdc = &check_fordc(\%dcroles,$then); # ================================================================== Roles Init if ($env{'form.selectrole'}) { if ($env{'request.course.id'}) { my %temp=('logout_'.$env{'request.course.id'} => time); &Apache::lonnet::put('email_status',\%temp); &Apache::lonnet::delenv('user.state.'.$env{'request.course.id'}); } &Apache::lonnet::appenv("request.course.id" => '', "request.course.fn" => '', "request.course.uri" => '', "request.course.sec" => '', "request.role" => 'cm', "request.role.adv" => $env{'user.adv'}, "request.role.domain" => $env{'user.domain'}); # Check if user is a DC trying to enter a course and needs privs to be created if ($numdc > 0) { foreach my $envkey (keys %env) { if ($envkey =~ m-^form\.cc\./(\w+)/(\w+)$-) { if ($dcroles{$1}) { my $cckey = 'user.role.cc./'.$1.'/'.$2; &check_privs($cckey,$then,$now); } last; } } } foreach $envkey (keys %env) { next if ($envkey!~/^user\.role\./); my ($where,$trolecode,$role,$tstatus,$tend,$tstart); &role_status($envkey,$then,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend); if ($env{'form.'.$trolecode}) { if ($tstatus eq 'is') { $where=~s/^\///; my ($cdom,$cnum,$csec)=split(/\//,$where); # store role if recent_role list being kept if ($env{'environment.recentroles'}) { &Apache::lonhtmlcommon::store_recent('roles', $trolecode,' '); } # check for keyed access if (($role eq 'st') && ($env{'course.'.$cdom.'_'.$cnum.'.keyaccess'} eq 'yes')) { # who is key authority? my $authdom=$cdom; my $authnum=$cnum; if ($env{'course.'.$cdom.'_'.$cnum.'.keyauth'}) { ($authnum,$authdom)= split(/\W/,$env{'course.'.$cdom.'_'.$cnum.'.keyauth'}); } # check with key authority unless (&Apache::lonnet::validate_access_key( $env{'environment.key.'.$cdom.'_'.$cnum}, $authdom,$authnum)) { # there is no valid key if ($env{'form.newkey'}) { # student attempts to register a new key &Apache::loncommon::content_type($r,'text/html'); &Apache::loncommon::no_cache($r); $r->send_http_header; my $swinfo=&Apache::lonmenu::rawconfig(); my $bodytag=&Apache::loncommon::bodytag ('Verifying Access Key to Unlock this Course'); my $buttontext=&mt('Enter Course'); my $message=&mt('Successfully registered key'); my $assignresult= &Apache::lonnet::assign_access_key( $env{'form.newkey'}, $authdom,$authnum, $cdom,$cnum, $env{'user.domain'}, $env{'user.name'}, 'Assigned from '.$ENV{'REMOTE_ADDR'}.' at '.localtime().' for '. $trolecode); unless ($assignresult eq 'ok') { $assignresult=~s/^error\:\s*//; $message=&mt($assignresult). '
'. &mt('Logout').''; $buttontext=&mt('Re-Enter Key'); } $r->print(<Verifying Course Access Key $bodytag
$message
ENDENTEREDKEY return OK; } else { # print form to enter a new key &Apache::loncommon::content_type($r,'text/html'); &Apache::loncommon::no_cache($r); $r->send_http_header; my $swinfo=&Apache::lonmenu::rawconfig(); my $bodytag=&Apache::loncommon::bodytag ('Enter Access Key to Unlock this Course'); $r->print(<Entering Course Access Key $bodytag
ENDENTERKEY return OK; } } } &Apache::lonnet::log($env{'user.domain'}, $env{'user.name'}, $env{'user.home'}, "Role ".$trolecode); &Apache::lonnet::appenv( 'request.role' => $trolecode, 'request.role.domain' => $cdom, 'request.course.sec' => $csec); my $tadv=0; my $msg=&mt('Entering course ...'); if (($cnum) && ($role ne 'ca')) { my ($furl,$ferr)= &Apache::lonuserstate::readmap($cdom.'/'.$cnum); if (($env{'form.orgurl'}) && ($env{'form.orgurl'}!~/^\/adm\/flip/)) { my $dest=$env{'form.orgurl'}; if (&Apache::lonnet::allowed('adv') eq 'F') { $tadv=1; } &Apache::lonnet::appenv('request.role.adv'=>$tadv); $r->internal_redirect($dest); return OK; } else { unless ($env{'request.course.id'}) { &Apache::lonnet::appenv( "request.course.id" => $cdom.'_'.$cnum); $furl='/adm/roles?tryagain=1'; $msg= '

'. &mt('Could not initialize course at this time.'). '

'.&mt('Please try again.').'

'.$ferr; } if (&Apache::lonnet::allowed('adv') eq 'F') { $tadv=1; } &Apache::lonnet::appenv('request.role.adv'=>$tadv); # Check to see if the user is a CC entering a course # for the first time my (undef, undef, $role, $courseid) = split(/\./, $envkey); if (substr($courseid, 0, 1) eq '/') { $courseid = substr($courseid, 1); } $courseid =~ s/\//_/; if ($role eq 'cc' && $env{'course.' . $courseid . '.course.helper.not.run'}) { $furl = "/adm/helper/course.initialization.helper"; } # Send the user to the course they selected if (($env{'request.course.fn'}) && ($role eq 'cc' && ($env{'environment.course_init_display'} ne 'firstres')) { $msg = &mt('Entering course ....'); &redirect_user($r,&mt('New in course'), '/adm/whatsnew',$msg, $env{'environment.remotenavmap'}); } else { &redirect_user($r,&mt('Entering Course'), $furl,$msg, $env{'environment.remotenavmap'}); } return OK; } } # # Send the user to the construction space they selected if ($role =~ /^(au|ca)$/) { my $redirect_url = '/priv/'; if ($role eq 'au') { $redirect_url.=$env{'user.name'}; } else { $where =~ /\/(.*)$/; $redirect_url .= $1; } $redirect_url .= '/'; &redirect_user($r,&mt('Entering Construction Space'), $redirect_url); return OK; } if ($role eq 'dc') { my $redirect_url = '/adm/menu/'; &redirect_user($r,&mt('Loading Domain Coordinator Menu'), $redirect_url); return OK; } } } } } # =============================================================== No Roles Init &Apache::loncommon::content_type($r,'text/html'); &Apache::loncommon::no_cache($r); $r->send_http_header; return OK if $r->header_only; my $swinfo=&Apache::lonmenu::rawconfig(); my $bodytag=&Apache::loncommon::bodytag('User Roles'); my $helptag='
'.&Apache::loncommon::help_open_menu('','General Intro','General_Intro','User Roles',1,undef,undef,undef,undef,,&mt("Click here for help")).'
'; $r->print(< LON-CAPA User Roles $bodytag $helptag
ENDHEADER # ------------------------------------------ Get Error Message from Environment my ($fn,$priv,$nochoose,$error,$msg)=split(/:/,$env{'user.error.msg'}); if ($env{'user.error.msg'}) { $r->log_reason( "$msg for $env{'user.name'} domain $env{'user.domain'} access $priv",$fn); } # ------------------------------------------------- Can this user re-init, etc? my $advanced=$env{'user.adv'}; &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['tryagain']); my $tryagain=$env{'form.tryagain'}; # -------------------------------------------------------- Generate Page Output # --------------------------------------------------------------- Error Header? if ($error) { $r->print("

LON-CAPA Access Control

"); $r->print("
Access  : ".
                  Apache::lonnet::plaintext($priv)."\n");
        $r->print("Resource: ".&Apache::lonenc::check_encrypt($fn)."\n");
        $r->print("Action  : $msg\n
"); my $url=$fn; my $last; if (tie(my %hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db', &GDBM_READER(),0640)) { $last=$hash{'last_known'}; untie(%hash); } if ($last) { $fn.='?symb='.&Apache::lonnet::escape($last); } &Apache::londocs::changewarning($r,undef,'You have modified your course recently, [_1] may fix this access problem.', &Apache::lonenc::check_encrypt($fn)); } else { if ($env{'user.error.msg'}) { $r->print( '

'. &mt('You need to choose another user role or enter a specific course for this function').'

'); } } # -------------------------------------------------------- Choice or no choice? if ($nochoose) { if ($advanced) { $r->print("

".&mt('Assigned User Roles')."

\n"); } else { $r->print("

".&mt('Sorry ...')."

\n". &mt('This resource might be part of')); if ($env{'request.course.id'}) { $r->print(&mt(' another')); } else { $r->print(&mt(' a certain')); } $r->print(&mt(' course.').''); return OK; } } else { if ($advanced) { $r->print(&mt("Your home server is "). $Apache::lonnet::hostname{&Apache::lonnet::homeserver ($env{'user.name'},$env{'user.domain'})}. "
\n"); $r->print(&mt( "Author and Co-Author roles may not be available on servers other than your home server.")); } if (($ENV{'REDIRECT_QUERY_STRING'}) && ($fn)) { $fn.='?'.$ENV{'REDIRECT_QUERY_STRING'}; } $r->print('
'); $r->print(''); $r->print(''); } if ($env{'user.adv'}) { $r->print( '
'); } my (%roletext,%sortrole,%roleclass); my $countactive=0; my $inrole=0; my $possiblerole=''; foreach $envkey (sort keys %env) { my $button = 1; my $switchserver=''; my $roletext; my $sortkey; if ($envkey=~/^user\.role\./) { my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend,$tfont); &role_status($envkey,$then,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend); next if (!defined($role) || $role eq ''); $tremark=''; $tpstart=' '; $tpend=' '; $tfont='#000000'; if ($tstart) { $tpstart=&Apache::lonlocal::locallocaltime($tstart); } if ($tend) { $tpend=&Apache::lonlocal::locallocaltime($tend); } if ($env{'request.role'} eq $trolecode) { $tstatus='selected'; } my $tbg; if (($tstatus eq 'is') || ($tstatus eq 'selected') || ($env{'form.showall'})) { if ($tstatus eq 'is') { $tbg='#77FF77'; $tfont='#003300'; $possiblerole=$trolecode; $countactive++; } elsif ($tstatus eq 'future') { $tbg='#FFFF77'; $button=0; } elsif ($tstatus eq 'will') { $tbg='#FFAA77'; $tremark.=&mt('Active at next login. '); } elsif ($tstatus eq 'expired') { $tbg='#FF7777'; $tfont='#330000'; $button=0; } elsif ($tstatus eq 'will_not') { $tbg='#AAFF77'; $tremark.=&mt('Expired after logout. '); } elsif ($tstatus eq 'selected') { $tbg='#11CC55'; $tfont='#002200'; $inrole=1; $countactive++; $tremark.=&mt('Currently selected. '); } my $trole; if ($role =~ /^cr\//) { my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$role); $tremark.='
'.&mt('Defined by ').$rauthor. &mt(' at ').$rdomain.'.'; $trole=$rrole; } else { $trole=Apache::lonnet::plaintext($role); } my $ttype; my $twhere; my ($tdom,$trest,$tsection)= split(/\//,Apache::lonnet::declutter($where)); # First, Co-Authorship roles if ($role eq 'ca') { my $home = &Apache::lonnet::homeserver($trest,$tdom); my $allowed=0; my @ids=&Apache::lonnet::current_machine_ids(); foreach my $id (@ids) { if ($id eq $home) { $allowed=1; } } if (!$allowed) { $button=0; $switchserver=&Apache::lonnet::escape('http://'. $Apache::lonnet::hostname{$home}. '/adm/login?domain='.$env{'user.domain'}. '&username='.$env{'user.name'}. '&firsturl=/priv/'.$trest.'/'); } #next if ($home eq 'no_host'); $home = $Apache::lonnet::hostname{$home}; $ttype='Construction Space'; $twhere=&mt('User').': '.$trest.'
'.&mt('Domain'). ': '.$tdom.'
'. ' '.&mt('Server').': '.$home; $env{'course.'.$tdom.'_'.$trest.'.description'}='ca'; $tremark.=&Apache::lonhtmlcommon::authorbombs('/res/'.$tdom.'/'.$trest.'/'); $sortkey=$role."$trest:$tdom"; } elsif ($role eq 'au') { # Authors my $home = &Apache::lonnet::homeserver ($env{'user.name'},$env{'user.domain'}); my $allowed=0; my @ids=&Apache::lonnet::current_machine_ids(); foreach my $id (@ids) { if ($id eq $home) { $allowed=1; } } if (!$allowed) { $button=0; $switchserver=&Apache::lonnet::escape('http://'. $Apache::lonnet::hostname{$home}. '/adm/login?domain='.$env{'user.domain'}. '&username='.$env{'user.name'}. '&firsturl=/priv/'.$env{'user.name'}.'/'); } #next if ($home eq 'no_host'); $home = $Apache::lonnet::hostname{$home}; $ttype='Construction Space'; $twhere=&mt('Domain').': '.$tdom.'
'.&mt('Server'). ': '.$home; $env{'course.'.$tdom.'_'.$trest.'.description'}='ca'; $tremark.=&Apache::lonhtmlcommon::authorbombs('/res/'.$tdom.'/'.$env{'user.name'}.'/'); $sortkey=$role; } elsif ($trest) { $ttype='Course'; my $tcourseid=$tdom.'_'.$trest; if ($env{'course.'.$tcourseid.'.description'}) { $twhere=$env{'course.'.$tcourseid.'.description'}; $sortkey=$role."\0".$tdom."\0".$twhere."\0".$envkey; unless ($twhere eq &mt('Currently not available')) { $twhere.=' '. &Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$trest,$tdom,$tfont). ''; } } else { my %newhash=&Apache::lonnet::coursedescription($tcourseid); if (%newhash) { $sortkey=$role."\0".$tdom."\0".$newhash{'description'}. "\0".$envkey; $twhere=$newhash{'description'}. ' '. &Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$trest,$tdom,$tfont). ''; } else { $twhere=&mt('Currently not available'); $env{'course.'.$tcourseid.'.description'}=$twhere; $sortkey=$role."\0".$tdom."\0".$twhere."\0".$envkey; } } if ($tsection) { $twhere.='
'.&mt('Section/Group').': '.$tsection; } if ($role ne 'st') { $twhere.="
".&mt('Domain').":".$tdom; } } elsif ($tdom) { $ttype='Domain'; $twhere=$tdom; $sortkey=$role.$twhere; } else { $ttype='System'; $twhere=&mt('system wide'); $sortkey=$role.$twhere; } $roletext.=&build_roletext($trolecode,$tdom,$trest,$tstatus,$tryagain,$advanced,$tremark,$tbg,$tfont,$trole,$ttype,$twhere,$tpstart,$tpend,$nochoose,$button,$switchserver); $roletext{$envkey}=$roletext; if (!$sortkey) {$sortkey=$twhere."\0".$envkey;} $sortrole{$sortkey}=$envkey; $roleclass{$envkey}=$ttype; } } } # No active roles if ($countactive==0) { if ($inrole) { $r->print('

'.&mt('Currently no additional roles or courses').'

'); } else { $r->print('

'.&mt('Currently no active roles or courses').'

'); } $r->print('
'); return OK; # Is there only one choice? } elsif (($countactive==1) && ($env{'request.role'} eq 'cm')) { $r->print('

'.&mt('Please stand by.').'

'. ''); $r->print("\n"); $r->rflush(); $r->print(''); $r->print(''); return OK; } # More than one possible role # ----------------------------------------------------------------------- Table unless (($advanced) || ($nochoose)) { $r->print("

".&mt('Select a Course to Enter')."

\n"); } $r->print('
'); unless ($nochoose) { $r->print(''); } $r->print(''."\n"); my $doheaders=-1; foreach my $type ('Construction Space','Course','Domain','System') { my $haverole=0; foreach my $which (sort {uc($a) cmp uc($b)} (keys(%sortrole))) { if ($roleclass{$sortrole{$which}} =~ /^\Q$type\E/) { $haverole=1; } } if ($haverole) { $doheaders++; } } if ($env{'environment.recentroles'}) { my %recent_roles = &Apache::lonhtmlcommon::get_recent('roles',$env{'environment.recentrolesn'}); my $output=''; foreach (sort(keys(%recent_roles))) { if (defined($roletext{'user.role.'.$_})) { $output.=$roletext{'user.role.'.$_}; } elsif ($numdc > 0) { unless ($_ =~/^error\:/) { $output.=&display_cc_role('user.role.'.$_); } } } if ($output) { $r->print(""); $r->print($output); $r->print(""); $doheaders ++; } } if ($numdc > 0) { $r->print(&coursepick_jscript()); $r->print(&Apache::loncommon::coursebrowser_javascript()); } foreach my $type ('Construction Space','Course','Domain','System') { my $output; foreach my $which (sort {uc($a) cmp uc($b)} (keys(%sortrole))) { if ($roleclass{$sortrole{$which}} =~ /^\Q$type\E/) { $output.=$roletext{$sortrole{$which}}; if ($sortrole{$which} =~ m-dc\./(\w+)/-) { if ($dcroles{$1}) { $output .= &allcourses_row($1); } } } } if ($output) { if ($doheaders > 0) { $r->print("". ""); } $r->print($output); } } my $tremark=''; my $tfont='#003300'; if ($env{'request.role'} eq 'cm') { $r->print(''); $tremark=&mt('Currently selected. '); $tfont='#002200'; } else { $r->print(''); } unless ($nochoose) { if ($env{'request.role'} ne 'cm') { $r->print(''); } else { $r->print(''); } } $r->print(''."\n"); $r->print('
 '.&mt('User Role').''.&mt('Extent'). ''.&mt('Start').''.&mt('End').''. &mt('Remarks and Calendar Announcements').'
". &mt('Recent Roles')."
".&mt($type)."
 '.&mt('No role specified'). ''.$tremark. ' 
'); unless ($nochoose) { $r->print("\n"); } # ------------------------------------------------------------ Privileges Info if (($advanced) && (($env{'user.error.msg'}) || ($error))) { $r->print('

Current Privileges

'); foreach $envkey (sort keys %env) { if ($envkey=~/^user\.priv\.$env{'request.role'}\./) { my $where=$envkey; $where=~s/^user\.priv\.$env{'request.role'}\.//; my $ttype; my $twhere; my ($tdom,$trest,$tsec)= split(/\//,Apache::lonnet::declutter($where)); if ($trest) { if ($env{'course.'.$tdom.'_'.$trest.'.description'} eq 'ca') { $ttype='Construction Space'; $twhere='User: '.$trest.', Domain: '.$tdom; } else { $ttype='Course'; $twhere=$env{'course.'.$tdom.'_'.$trest.'.description'}; if ($tsec) { $twhere.=' (Section/Group: '.$tsec.')'; } } } elsif ($tdom) { $ttype='Domain'; $twhere=$tdom; } else { $ttype='System'; $twhere='/'; } $r->print("\n

".$ttype.': '.$twhere.'

    '); foreach (sort split(/:/,$env{$envkey})) { if ($_) { my ($prv,$restr)=split(/\&/,$_); my $trestr=''; if ($restr ne 'F') { my $i; $trestr.=' ('; for ($i=0;$iprint('
  • '. Apache::lonnet::plaintext($prv).$trestr. '
    • '); } } $r->print('
'); } } } $r->print(&Apache::lonnet::getannounce()); if ($advanced) { $r->print('

This is LON-CAPA '. $r->dir_config('lonVersion').'
'. ''.&mt('Logout').'

'); } $r->print("\n"); return OK; } sub role_status { my ($rolekey,$then,$now,$role,$where,$trolecode,$tstatus,$tstart,$tend) = @_; my @pwhere = (); if (exists($env{$rolekey}) && $env{$rolekey} ne '') { (undef,undef,$$role,@pwhere)=split(/\./,$rolekey); unless (!defined($$role) || $$role eq '') { $$where=join('.',@pwhere); $$trolecode=$$role.'.'.$$where; ($$tstart,$$tend)=split(/\./,$env{$rolekey}); $$tstatus='is'; if ($$tstart && $$tstart>$then) { $$tstatus='future'; if ($$tstart<$now) { $$tstatus='will'; } } if ($$tend) { if ($$tend<$then) { $$tstatus='expired'; } elsif ($$tend<$now) { $$tstatus='will_not'; } } } } } sub build_roletext { my ($trolecode,$tdom,$trest,$tstatus,$tryagain,$advanced,$tremark,$tbg,$tfont,$trole,$ttype,$twhere,$tpstart,$tpend,$nochoose,$button,$switchserver) = @_; my $roletext=''; unless ($nochoose) { if (!$button) { if ($switchserver) { $roletext.=''.&mt('Switch Server').''; } else { $roletext.=(' '); } } elsif ($tstatus eq 'is') { $roletext.=(''); } elsif ($tryagain) { $roletext.= ''; } elsif ($advanced) { $roletext.= ''; } else { $roletext.=' '; } } $tremark.=&Apache::lonannounce::showday(time,1, &Apache::lonannounce::readcalendar($tdom.'_'.$trest)); $roletext.=''.$trole. ''.$twhere. ''.$tpstart. ''.$tpend. ''.$tremark. ' '."\n"; return $roletext; } sub check_privs { my ($cckey,$then,$now) = @_; if ($env{$cckey}) { my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend,$tfont); &role_status($cckey,$then,$now,\$role,\$where,\$trolecode,\$tstatus,\$tstart,\$tend); unless (($tstatus eq 'is') || ($tstatus eq 'will_not')) { &set_privileges($1,$2); } } else { &set_privileges($1,$2); } } sub check_fordc { my ($dcroles,$then) = @_; my $numdc = 0; if ($env{'user.adv'}) { foreach my $envkey (sort keys %env) { if ($envkey=~/^user\.role\.dc\.\/(\w+)\/$/) { my $dcdom = $1; my $livedc = 1; my ($tstart,$tend)=split(/\./,$env{$envkey}); if ($tstart && $tstart>$then) { $livedc = 0; } if ($tend && $tend <$then) { $livedc = 0; } if ($livedc) { $$dcroles{$dcdom} = $envkey; $numdc++; } } } } return $numdc; } sub courselink { my ($dcdom) = @_; my $courseform=&Apache::loncommon::selectcourse_link ('rolechoice','dccourse_'.$dcdom,'dcdomain_'.$dcdom,'coursedesc_'.$dcdom,$dcdom); my $hiddenitems = ''. ''. ''. ''; return $courseform.$hiddenitems; } sub coursepick_jscript { my $verify_script = <<"END"; END return $verify_script; } sub processpick { my $dcdom = shift; my $process_pick = <<"END"; END return $process_pick; } sub display_cc_role { my $rolekey = shift; my $roletext; my $advanced = $env{'user.adv'}; my $tryagain = $env{'form.tryagain'}; unless ($rolekey =~/^error\:/) { if ($rolekey =~ m-^user\.role.cc\./(\w+)/(\w+)$-) { my $tcourseid = $1.'_'.$2; my $trolecode = 'cc./'.$1.'/'.$2; my $trole = Apache::lonnet::plaintext('cc'); my $twhere; my $tbg='#77FF77'; my $tfont='#003300'; my %newhash=&Apache::lonnet::coursedescription($tcourseid); if (%newhash) { $twhere=$newhash{'description'}. ' '. &Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$2,$1,$tfont). ''; } else { $twhere=&mt('Currently not available'); $env{'course.'.$tcourseid.'.description'}=$twhere; } $twhere.="
".&mt('Domain').":".$1; $roletext = &build_roletext($trolecode,$1,$2,'is',$tryagain,$advanced,'',$tbg,$tfont,$trole,&mt('Course'),$twhere,'','','',1,''); } } return $roletext; } sub allcourses_row { my $dcdom = shift; my $ccrole = Apache::lonnet::plaintext('cc'); my $selectlink = &courselink($dcdom); my $output = ''. ''. ''. ''. $ccrole.''. ''.&mt('All courses').': '. $selectlink.''. '
'.&mt('Domain').':'.$dcdom.''. ''. &mt('Course Coordinator access to all courses in domain'). ': '.$dcdom.''."\n"; return $output; } sub recent_filename { my $area=shift; return 'nohist_recent_'.&Apache::lonnet::escape($area); } sub set_privileges { my ($dcdom,$pickedcourse) = @_; my $area = '/'.$dcdom.'/'.$pickedcourse; my $role = 'cc'; my $spec = $role.'.'.$area; my $userroles = &Apache::lonnet::set_arearole($role,$area,'','',$dcdom,$env{'user.name'}); my %ccrole = (); &Apache::lonnet::standard_roleprivs(\%ccrole,$role,$dcdom,$spec,$pickedcourse,$area); my ($author,$adv)= &Apache::lonnet::set_userprivs(\$userroles,\%ccrole); my @newprivs = split/\n/,$userroles; my %newccroles = (); foreach (@newprivs) { my ($key,$val) = split/=/,$_; $newccroles{$key} = $val; } &Apache::lonnet::appenv(%newccroles); &Apache::lonnet::log($env{'user.domain'}, $env{'user.name'}, $env{'user.home'}, "Role ".$role); &Apache::lonnet::appenv( 'request.role' => $role, 'request.role.domain' => $dcdom, 'request.course.sec' => ''); my $tadv=0; if (&Apache::lonnet::allowed('adv') eq 'F') { $tadv=1; } &Apache::lonnet::appenv('request.role.adv' => $tadv); } 1; __END__ =head1 NAME Apache::lonroles - User Roles Screen =head1 SYNOPSIS Invoked by /etc/httpd/conf/srm.conf: PerlAccessHandler Apache::lonacc SetHandler perl-script PerlHandler Apache::lonroles ErrorDocument 403 /adm/login ErrorDocument 500 /adm/errorhandler =head1 OVERVIEW =head2 Choosing Roles C is a handler that allows a user to switch roles in mid-session. LON-CAPA attempts to work with "No Role Specified", the default role that a user has before selecting a role, as widely as possible, but certain handlers for example need specification which course they should act on, etc. Both in this scenario, and when the handler determines via C's C<&allowed> function that a certain action is not allowed, C is used as error handler. This allows the user to select another role which may have permission to do what they were trying to do. C can also be accessed via the B button in the Remote Control. =begin latex \begin{figure} \begin{center} \includegraphics[width=0.45\paperwidth,keepaspectratio]{Sample_Roles_Screen} \caption{\label{Sample_Roles_Screen}Sample Roles Screen} \end{center} \end{figure} =end latex =head2 Role Initialization 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'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. =head1 INTRODUCTION This module enables a user to select what role he wishes to operate under (instructor, student, teaching assistant, course coordinator, etc). These roles are pre-established by the actions of upper-level users. This is part of the LearningOnline Network with CAPA project described at http://www.lon-capa.org. =head1 HANDLER SUBROUTINE This routine is called by Apache and mod_perl. =over 4 =item * Roles Initialization (yes/no) =item * Get Error Message from Environment =item * Who is this? =item * Generate Page Output =item * Choice or no choice =item * Table =item * Privileges =back =cut