loncom/auth/lonroles.pm - view

File: [LON-CAPA] / loncom / auth / lonroles.pm
Revision 1.182: download - view: text, annotated - select for diffs
Sat Jan 26 21:12:32 2008 UTC (16 years, 4 months ago) by www
Branches: MAIN
CVS tags: HEAD

Bug #3765: Ad-hoc co-author

# The LearningOnline Network with CAPA # User Roles Screen # # $Id: lonroles.pm,v 1.182 2008/01/26 21:12:32 www 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 Apache::lonpageflip(); use Apache::lonnavdisplay(); use GDBM_File; use LONCAPA qw(:DEFAULT :match); 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') { $navwindow.=&Apache::lonnavdisplay::launch_win('now',undef,undef, ($url =~ m-^/adm/whatsnew-)); } else { $navwindow.=&Apache::lonnavmaps::close(); } my $start_page = &Apache::loncommon::start_page('Switching Role',undef, {'redirect' => [1,$url],}); my $end_page = &Apache::loncommon::end_page(); # Note to style police: # This must only replace the spaces, nothing else, or it bombs elsewhere. $url=~s/ /\%20/g; $r->print(<<ENDREDIR); $start_page <script type="text/javascript"> $swinfo </script> $navwindow <h1>$msg</h1> $end_page ENDREDIR return; } sub error_page { my ($r,$error,$dest)=@_; &Apache::loncommon::content_type($r,'text/html'); &Apache::loncommon::no_cache($r); $r->send_http_header; return OK if $r->header_only; $r->print(&Apache::loncommon::start_page('Problems during Course Initialization'). '<script type="text/javascript">'. &Apache::lonmenu::rawconfig().'</script>'. '<p>'.&mt('The following problems occurred:'). $error. '</p><br /><a href="'.$dest.'">'.&mt('Continue').'</a>'. &Apache::loncommon::end_page()); } sub handler { my $r = shift; my $now=time; my $then=$env{'user.login.time'}; my $envkey; my %dcroles = (); my $numdc = &check_fordc(\%dcroles,$then); &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'}); # ================================================================== Roles Init if ($env{'form.selectrole'}) { if ($env{'form.newrole'}) { $env{'form.'.$env{'form.newrole'}}=1; } 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" => $env{'user.domain'}); # Check if user is a DC trying to enter a course or author space and needs privs to be created if ($numdc > 0) { foreach my $envkey (keys %env) { # Is this an ad-hoc CC-role? if (my ($domain,$coursenum) = ($envkey =~ m-^form\.cc\./($match_domain)/($match_courseid)$-)) { if ($dcroles{$domain}) { &check_privs($domain,$coursenum,$then,$now,'cc'); } last; } # Is this a recent ad-hoc CA-role? if (my ($domain,$coursenum) = ($envkey =~ m-^form\.ca\./($match_domain)/($match_courseid)$-)) { if ($dcroles{$domain}) { &check_privs($domain,$coursenum,$then,$now,'ca'); } last; } # Is this a new ad-hoc CA-role? if (my ($domain) = ($envkey =~ m-^form\.adhocca\./($match_domain)$-)) { if ($dcroles{$domain}) { my $user=$env{'form.adhoccauname.'.$domain}; if (!$user) { $user=$env{'form.adhoccaunamerecent.'.$domain} }; if (($user) && ($user=~/$match_username/)) { &check_privs($domain,$user,$then,$now,'ca'); $env{'form.ca./'.$domain.'/'.$user}=1; } } 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); # check for course groups my %coursegroups = &Apache::lonnet::get_active_groups( $env{'user.domain'},$env{'user.name'},$cdom, $cnum); my $cgrps = join(':',keys(%coursegroups)); # store role if recent_role list being kept if ($env{'environment.recentroles'}) { my %frozen_roles = &Apache::lonhtmlcommon::get_recent_frozen('roles',$env{'environment.recentrolesn'}); &Apache::lonhtmlcommon::store_recent('roles', $trolecode,' ',$frozen_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,$authdom)= split(/:/,$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 $start_page=&Apache::loncommon::start_page ('Verifying Access Key to Unlock this Course'); my $end_page=&Apache::loncommon::end_page(); 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). '<br /><a href="/adm/logout">'. &mt('Logout').'</a>'; $buttontext=&mt('Re-Enter Key'); } $r->print(<<ENDENTEREDKEY); $start_page <script type="text/javascript"> $swinfo </script> <form method="post"> <input type="hidden" name="selectrole" value="1" /> <input type="hidden" name="$trolecode" value="1" /> <font size="+2">$message</font><br /> <input type="submit" value="$buttontext" /> </form> $end_page ENDENTEREDKEY return OK; } else { # print form to enter a new key &Apache::loncommon::content_type($r,'text/html'); &Apache::loncommon::no_cache($r); $r->send_http_header; my $swinfo=&Apache::lonmenu::rawconfig(); my $start_page=&Apache::loncommon::start_page ('Enter Access Key to Unlock this Course'); my $end_page=&Apache::loncommon::end_page(); $r->print(<<ENDENTERKEY); $start_page <script type="text/javascript"> $swinfo </script> <form method="post"> <input type="hidden" name="selectrole" value="1" /> <input type="hidden" name="$trolecode" value="1" /> <input type="text" size="20" name="newkey" value="$env{'form.newkey'}" /> <input type="submit" value="Enter key" /> </form> $end_page ENDENTERKEY return OK; } } } &Apache::lonnet::log($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, 'request.course.groups' => $cgrps); my $tadv=0; if (($cnum) && ($role ne 'ca') && ($role ne 'aa')) { my $msg; my ($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); if (($ferr) && ($tadv)) { &error_page($r,$ferr,$dest); } else { $r->internal_redirect($dest); } return OK; } else { if (!$env{'request.course.id'}) { &Apache::lonnet::appenv( "request.course.id" => $cdom.'_'.$cnum); $furl='/adm/roles?tryagain=1'; $msg= '<h1><span class="LC_error">'. &mt('Could not initialize [_1] at this time.', $env{'course.'.$cdom.'_'.$cnum.'.description'}). '</span></h1><h3>'.&mt('Please try again.').'</h3>'.$ferr; } if (&Apache::lonnet::allowed('adv') eq 'F') { $tadv=1; } &Apache::lonnet::appenv('request.role.adv'=>$tadv); if (($ferr) && ($tadv)) { &error_page($r,$ferr,$furl); } else { # 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'}) { $furl = "/adm/helper/course.initialization.helper"; # Send the user to the course they selected } elsif ($env{'request.course.id'}) { if (&Apache::lonnet::allowed('whn', $env{'request.course.id'}) || &Apache::lonnet::allowed('whn', $env{'request.course.id'}.'/' .$env{'request.course.sec'}) ) { my $startpage = &courseloadpage($courseid); unless ($startpage eq 'firstres') { $msg = &mt('Entering [_1] ....', $env{'course.'.$courseid.'.description'}); &redirect_user($r,&mt('New in course'), '/adm/whatsnew?refpage=start',$msg, $env{'environment.remotenavmap'}); return OK; } } } # Are we allowed to look at the first resource? if ($furl !~ m|^/adm/|) { # Guess not ... $furl=&Apache::lonpageflip::first_accessible_resource(); } $msg = &mt('Entering [_1] ...', $env{'course.'.$courseid.'.description'}); &redirect_user($r,&mt('Entering [_1]', $env{'course.'.$courseid.'.description'}), $furl,$msg, $env{'environment.remotenavmap'}); } return OK; } } # # Send the user to the construction space they selected if ($role =~ /^(au|ca|aa)$/) { 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 $start_page=&Apache::loncommon::start_page('User Roles'); my $standby=&mt('Role selected. Please stand by.'); $standby=~s/\n/\\n/g; 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 ba unavailable.').'</span><br />'; $r->print(<<ENDHEADER); $start_page <br /> <noscript> $noscript </noscript> <script type="text/javascript"> $swinfo window.focus(); active=true; function enterrole (thisform,rolecode,buttonname) { if (active) { active=false; document.title='$standby'; window.status='$standby'; thisform.newrole.value=rolecode; thisform.submit(); } else { alert('$standby'); } } </script> 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("<h1>LON-CAPA Access Control</h1>"); $r->print("<hr /><pre>"); if ($priv ne '') { $r->print("Access : ".&Apache::lonnet::plaintext($priv)."\n"); } if ($fn ne '') { $r->print("Resource: ".&Apache::lonenc::check_encrypt($fn)."\n"); } if ($msg ne '') { $r->print("Action : $msg\n"); } $r->print("</pre><hr />"); 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) { $fn.='?symb='.&escape($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'}) { $r->print( '<h3><span class="LC_error">'. &mt('You need to choose another user role or enter a specific course for this function').'</span></h3>'); } } # -------------------------------------------------------- Choice or no choice? if ($nochoose) { $r->print("<h2>".&mt('Sorry ...')."</h2>\n<span class='LC_error'>". &mt('This action is currently not authorized.').'</span>'. &Apache::loncommon::end_page()); return OK; } else { if (($ENV{'REDIRECT_QUERY_STRING'}) && ($fn)) { $fn.='?'.$ENV{'REDIRECT_QUERY_STRING'}; } $r->print('<form method="post" name="rolechoice" action="'.(($fn)?$fn:$r->uri).'">'); $r->print('<input type="hidden" name="orgurl" value="'.$fn.'" />'); $r->print('<input type="hidden" name="selectrole" value="1" />'); $r->print('<input type="hidden" name="newrole" value="" />'); } if ($env{'user.adv'}) { $r->print( '<br /><span class="LC_rolesinfo"><label>'.&mt('Show all roles').': <input type="checkbox" name="showall"'); if ($env{'form.showall'}) { $r->print(' checked="checked" '); } $r->print(' /></label><input type="submit" value="'.&mt('Display').'" /></span>'); } 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 '' || $role =~ /^gr/); $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') || ($tstatus eq 'selected') || ($tstatus eq 'will') || ($tstatus eq 'future') || ($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(/\//,$role); if ($tremark) { $tremark.='<br />'; } $tremark.=&mt('Defined by ').$rauthor. &mt(' at ').$rdomain.'.'; } $trole=Apache::lonnet::plaintext($role); my $ttype; my $twhere; my ($tdom,$trest,$tsection)= split(/\//,Apache::lonnet::declutter($where)); # First, Co-Authorship roles if (($role eq 'ca') || ($role eq 'aa')) { 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; $switchserver='otherserver='.$home.'&role='.$trolecode; } #next if ($home eq 'no_host'); $home = &Apache::lonnet::hostname($home); $ttype='Construction Space'; $twhere=&mt('User').': '.$trest.'<br />'.&mt('Domain'). ': '.$tdom.'<br />'. ' '.&mt('Server').': '.$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; $switchserver='otherserver='.$home.'&role='.$trolecode; } #next if ($home eq 'no_host'); $home = &Apache::lonnet::hostname($home); $ttype='Construction Space'; $twhere=&mt('Domain').': '.$tdom.'<br />'.&mt('Server'). ': '.$home; $env{'course.'.$tdom.'_'.$trest.'.description'}='ca'; $tremark.=&Apache::lonhtmlcommon::authorbombs('/res/'.$tdom.'/'.$env{'user.name'}.'/'); $sortkey=$role; } elsif ($trest) { my $tcourseid=$tdom.'_'.$trest; $ttype = &Apache::loncommon::course_type($tcourseid); $trole = &Apache::lonnet::plaintext($role,$ttype); if ($env{'course.'.$tcourseid.'.description'}) { $twhere=$env{'course.'.$tcourseid.'.description'}; $sortkey=$role."\0".$tdom."\0".$twhere."\0".$envkey; unless ($twhere eq &mt('Currently not available')) { $twhere.=' <font size="-2">'. &Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$trest,$tdom,$tfont). '</font>'; } } else { my %newhash=&Apache::lonnet::coursedescription($tcourseid); if (%newhash) { $sortkey=$role."\0".$tdom."\0".$newhash{'description'}. "\0".$envkey; $twhere=$newhash{'description'}. ' <font size="-2">'. &Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$trest,$tdom,$tfont). '</font>'; $ttype = $newhash{'type'}; $trole = &Apache::lonnet::plaintext($role,$ttype); } else { $twhere=&mt('Currently not available'); $env{'course.'.$tcourseid.'.description'}=$twhere; $sortkey=$role."\0".$tdom."\0".$twhere."\0".$envkey; $ttype = 'Unavailable'; } } if ($tsection) { $twhere.='<br />'.&mt('Section').': '.$tsection; } if ($role ne 'st') { $twhere.="<br />".&mt('Domain').":".$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,$trole,$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('<h2>'.&mt('Currently no additional roles or courses').'</h2>'); } else { $r->print('<h2>'.&mt('Currently no active roles or courses').'</h2>'); } $r->print('</form>'.&Apache::loncommon::end_page()); return OK; # Is there only one choice? } elsif (($countactive==1) && ($env{'request.role'} eq 'cm')) { $r->print('<h3>'.&mt('Please stand by.').'</h3>'. '<input type="hidden" name="'.$possiblerole.'" value="1" />'. '<noscript><br /><input type="submit" name="submit" value="'.&mt('Continue').'" /></noscript>'); $r->print("</form>\n"); $r->rflush(); $r->print('<script type="text/javascript">document.forms.rolechoice.submit();</script>'); $r->print(&Apache::loncommon::end_page()); return OK; } # More than one possible role # ----------------------------------------------------------------------- Table unless ((!&Apache::lonmenu::show_course()) || ($nochoose)) { $r->print("<h2>".&mt('Select a Course to Enter')."</h2>\n"); } $r->print('<br /><table id="LC_rolesmenu"><tr>'); unless ($nochoose) { $r->print('<th> </th>'); } $r->print('<th>'.&mt('User Role').'</th><th>'.&mt('Extent'). '</th><th>'.&mt('Start').'</th><th>'.&mt('End').'</th></tr>'."\n"); my $doheaders=-1; foreach my $type ('Domain','Construction Space','Course','Unavailable','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.'.$_}; if ($_ =~ m-dc\./($match_domain)/- && $dcroles{$1}) { $output .= &allcourses_row($1,'recent'). &allcoauthors_row($1,'recent'); } } elsif ($numdc > 0) { unless ($_ =~/^error\:/) { $output.=&display_cc_role('user.role.'.$_); } } } if ($output) { $r->print("<tr><td align='center' colspan='5'><font face='arial'>". &mt('Recent Roles')."</font></td>"); $r->print($output); $r->print("</tr>"); $doheaders ++; } } if ($numdc > 0) { $r->print(&coursepick_jscript()); $r->print(&Apache::loncommon::coursebrowser_javascript()); } foreach my $type ('Construction Space','Domain','Course','Unavailable','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\./($match_domain)/-) { if ($dcroles{$1}) { $output .= &allcourses_row($1,''). &allcoauthors_row($1,''); } } } } if ($output) { if ($doheaders > 0) { $r->print("<tr>". "<td align='center' colspan='5'><font face='arial'>".&mt($type)."</font></td></tr>"); } $r->print($output); } } my $tremark=''; my $tfont='#003300'; if ($env{'request.role'} eq 'cm') { $r->print('<tr bgcolor="#11CC55">'); $tremark=&mt('Currently selected. '); $tfont='#002200'; } else { $r->print('<tr bgcolor="#77FF77">'); } unless ($nochoose) { if ($env{'request.role'} ne 'cm') { $r->print('<td><input type="submit" value="'. &mt('Select').'" name="cm"></td>'); } else { $r->print('<td> </td>'); } } $r->print('<td colspan="3"><font color="'.$tfont.'"><span class="LC_rolesinfo">'.&mt('No role specified'). '</font></span></td><td><font color="'.$tfont.'">'.$tremark. ' </font></td></tr>'."\n"); $r->print('</table>'); unless ($nochoose) { $r->print("</form>\n"); } # ------------------------------------------------------------ Privileges Info if (($advanced) && (($env{'user.error.msg'}) || ($error))) { $r->print('<hr /><h2>Current Privileges</h2>'); $r->print(&privileges_info()); } $r->print(&Apache::lonnet::getannounce()); if ($advanced) { $r->print('<p><small><i>This is LON-CAPA '. $r->dir_config('lonVersion').'</i><br />'. '<a href="/adm/logout">'.&mt('Logout').'</a></small></p>'); } $r->print(&Apache::loncommon::end_page()); return OK; } sub privileges_info { my ($which) = @_; my $output; $which ||= $env{'request.role'}; foreach my $envkey (sort(keys(%env))) { next if ($envkey!~/^user\.priv\.\Q$which\E\.(.*)/); my $where=$1; my $ttype; my $twhere; my (undef,$tdom,$trest,$tsec)=split(m{/},$where); if ($trest) { if ($env{'course.'.$tdom.'_'.$trest.'.description'} eq 'ca') { $ttype='Construction Space'; $twhere='User: '.$trest.', Domain: '.$tdom; } else { $ttype= &Apache::loncommon::course_type($tdom.'_'.$trest); $twhere=$env{'course.'.$tdom.'_'.$trest.'.description'}; if ($tsec) { my $sec_type = 'Section'; if (exists($env{"user.role.gr.$where"})) { $sec_type = 'Group'; } $twhere.=' ('.$sec_type.': '.$tsec.')'; } } } elsif ($tdom) { $ttype='Domain'; $twhere=$tdom; } else { $ttype='System'; $twhere='/'; } $output .= "\n<h3>".$ttype.': '.$twhere.'</h3>'."\n<ul>"; foreach my $priv (sort(split(/:/,$env{$envkey}))) { next if (!$priv); my ($prv,$restr)=split(/\&/,$priv); my $trestr=''; if ($restr ne 'F') { $trestr.=' ('. join(', ', map { &Apache::lonnet::plaintext($_) } (split('',$restr))).') '; } $output .= "\n\t". '<li>'.&Apache::lonnet::plaintext($prv).$trestr.'</li>'; } $output .= "\n".'</ul>'; } return $output; } sub role_status { my ($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,$twhere,$tpstart,$tpend,$nochoose,$button,$switchserver) = @_; my $roletext='<tr bgcolor="'.$tbg.'" class="LC_rolesmenu_'.$tstatus.'">'; my $is_dc=($trolecode =~ m/^dc\./); my $rowspan=($is_dc) ? '' : ' rowspan="2" '; unless ($nochoose) { my $buttonname=$trolecode; $buttonname=~s/\W//g; if (!$button) { if ($switchserver) { $roletext.='<td'.$rowspan.'><span class="LC_rolesinfo"><a href="/adm/switchserver?'. $switchserver.'">'.&mt('Switch Server').'</a></span></td>'; } else { $roletext.=('<td'.$rowspan.'> </td>'); } } elsif ($tstatus eq 'is') { $roletext.='<td'.$rowspan.'><input name="'.$buttonname.'" type="button" value="'. &mt('Select').'" onClick="javascript:enterrole(this.form,\''. $trolecode."','".$buttonname.'\');"></td>'; } elsif ($tryagain) { $roletext.= '<td'.$rowspan.'><input name="'.$buttonname.'" type="button" value="'. &mt('Try Selecting Again').'" onClick="javascript:enterrole(this.form,\''. $trolecode."','".$buttonname.'\');"></td>'; } elsif ($advanced) { $roletext.= '<td'.$rowspan.'><input name="'.$buttonname.'" type="button" value="'. &mt('Re-Initialize').'" onClick="javascript:enterrole(this.form,\''. $trolecode."','".$buttonname.'\');"></td>'; } else { $roletext.='<td'.$rowspan.'> </td>'; } } if ($trolecode !~ m/^(dc|ca|au|aa)\./) { $tremark.=&Apache::lonannounce::showday(time,1, &Apache::lonannounce::readcalendar($tdom.'_'.$trest)); } $roletext.='<td><font color="'.$tfont.'">'.$trole. '</font></td><td><font color="'.$tfont.'">'.$twhere. '</font></td><td><font color="'.$tfont.'">'.$tpstart. '</font></td><td><font color="'.$tfont.'">'.$tpend. '</font></td></tr>'; if (!$is_dc) { $roletext.='<tr bgcolor="'.$tbg.'"><td colspan="4"><font color="'.$tfont.'"><span class="LC_rolesinfo">'.$tremark. '</span> </font></td></tr><tr><td colspan="5" height="3"></td></tr>'."\n"; } return $roletext; } sub check_privs { my ($cdom,$cnum,$then,$now,$checkrole) = @_; my $cckey = 'user.role.'.$checkrole.'./'.$cdom.'/'.$cnum; 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') || ($tstatus eq 'will_not')) { &set_privileges($cdom,$cnum,$checkrole); } } else { &set_privileges($cdom,$cnum,$checkrole); } } sub check_fordc { my ($dcroles,$then) = @_; my $numdc = 0; if ($env{'user.adv'}) { foreach my $envkey (sort keys %env) { if ($envkey=~/^user\.role\.dc\.\/($match_domain)\/$/) { 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,$rowtype,$selecttype) = @_; my $courseform=&Apache::loncommon::selectcourse_link ('rolechoice','dccourse'.$rowtype.'_'.$dcdom, 'dcdomain'.$rowtype.'_'.$dcdom,'coursedesc'.$rowtype.'_'. $dcdom,$dcdom,undef); my $hiddenitems = '<input type="hidden" name="dcdomain'.$rowtype.'_'.$dcdom.'" value="'.$dcdom.'" />'. '<input type="hidden" name="origdom'.$rowtype.'_'.$dcdom.'" value="'.$dcdom.'" />'. '<input type="hidden" name="dccourse'.$rowtype.'_'.$dcdom.'" value="" />'. '<input type="hidden" name="coursedesc'.$rowtype.'_'.$dcdom.'" value="" />'; return $courseform.$hiddenitems; } sub coursepick_jscript { my $verify_script = <<"END"; <script type="text/javascript"> function verifyCoursePick(caller) { var numbutton = getIndex(caller) var pickedCourse = document.rolechoice.elements[numbutton+4].value var pickedDomain = document.rolechoice.elements[numbutton+2].value if (document.rolechoice.elements[numbutton+2].value == document.rolechoice.elements[numbutton+3].value) { if (pickedCourse != '') { if (numbutton != -1) { var courseTarget = "cc./"+pickedDomain+"/"+pickedCourse document.rolechoice.elements[numbutton+1].name = courseTarget document.rolechoice.submit() } } else { alert("Please use the 'Select Course' link to open a separate pick course window where you may select the course you wish to enter."); } } else { alert("You can only use this screen to select courses in the current domain") } } function getIndex(caller) { for (var i=0;i<document.rolechoice.elements.length;i++) { if (document.rolechoice.elements[i] == caller) { return i; } } return -1; } </script> END return $verify_script; } sub display_cc_role { my $rolekey = shift; my $roletext; my $advanced = $env{'user.adv'}; my $tryagain = $env{'form.tryagain'}; unless ($rolekey =~/^error\:/) { if ($rolekey =~ m-^user\.role.cc\./($match_domain)/($match_courseid)$-) { my $tcourseid = $1.'_'.$2; my $trolecode = 'cc./'.$1.'/'.$2; my $twhere; my $ttype; my $tbg='#77FF77'; my $tfont='#003300'; my %newhash=&Apache::lonnet::coursedescription($tcourseid); if (%newhash) { $twhere=$newhash{'description'}. ' <font size="-2">'. &Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$2,$1,$tfont). '</font>'; $ttype = $newhash{'type'}; } else { $twhere=&mt('Currently not available'); $env{'course.'.$tcourseid.'.description'}=$twhere; } my $trole = &Apache::lonnet::plaintext('cc',$ttype); $twhere.="<br />".&mt('Domain').":".$1; $roletext = &build_roletext($trolecode,$1,$2,'is',$tryagain,$advanced,'',$tbg,$tfont,$trole,$twhere,'','','',1,''); } } return ($roletext); } sub allcourses_row { my ($dcdom,$rowtype) = @_; my $output = '<tr bgcolor="#77FF77">'. ' <td colspan="5">'; my $selectlink = &courselink($dcdom,$rowtype); my $ccrole = &Apache::lonnet::plaintext('cc'); $output.= '<span class="LC_rolesinfo">'. &mt('[_1]: [_2] from domain [_3]',$ccrole,$selectlink,$dcdom). '</span><br /></tr>'."\n"; return $output; } sub allcoauthors_row { my ($dcdom,$rowtype) = @_; my $output = '<tr bgcolor="#77FF77">'. ' <td colspan="5">'; my $carole = &Apache::lonnet::plaintext('ca'); my $inputlink='<input type="text" size="10" name="adhoccauname'.$rowtype.'.'.$dcdom.'" />'; my $gobutton='<input type="submit" name="adhocca./'.$dcdom.'" value="'.&mt('Go').'" />'; $output.= '<span class="LC_rolesinfo">'. &mt('[_1]: [_2] in domain [_3] [_4]',$carole,$inputlink,$dcdom,$gobutton). '</span><br /></tr><tr><td colspan="5" height="3"></td></tr>'."\n"; return $output; } sub recent_filename { my $area=shift; return 'nohist_recent_'.&escape($area); } sub set_privileges { # role can be cc or ca my ($dcdom,$pickedcourse,$role) = @_; my $area = '/'.$dcdom.'/'.$pickedcourse; my $spec = $role.'.'.$area; my %userroles = &Apache::lonnet::set_arearole($role,$area,'','', $env{'user.domain'}, $env{'user.name'}); my %ccrole = (); &Apache::lonnet::standard_roleprivs(\%ccrole,$role,$dcdom,$spec,$pickedcourse,$area); my ($author,$adv)= &Apache::lonnet::set_userprivs(\%userroles,\%ccrole); &Apache::lonnet::appenv(%userroles); &Apache::lonnet::log($env{'user.domain'}, $env{'user.name'}, $env{'user.home'}, "Role ".$role); &Apache::lonnet::appenv( 'request.role' => $spec, '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' => $tadv); } sub courseloadpage { my ($courseid) = @_; my $startpage; my %entry_settings = &Apache::lonnet::get('nohist_whatsnew', [$courseid.':courseinit']); my ($tmp) = %entry_settings; unless ($tmp =~ /^error: 2 /) { $startpage = $entry_settings{$courseid.':courseinit'}; } if ($startpage eq '') { if (exists($env{'environment.course_init_display'})) { $startpage = $env{'environment.course_init_display'}; } } return $startpage; } 1; __END__ =head1 NAME Apache::lonroles - User Roles Screen =head1 SYNOPSIS Invoked by /etc/httpd/conf/srm.conf: <Location /adm/roles> PerlAccessHandler Apache::lonacc SetHandler perl-script PerlHandler Apache::lonroles ErrorDocument 403 /adm/login ErrorDocument 500 /adm/errorhandler </Location> =head1 OVERVIEW =head2 Choosing Roles C<lonroles> 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<lonnet>'s C<&allowed> function that a certain action is not allowed, C<lonroles> 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<lonroles> can also be accessed via the B<CRS> 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<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. =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

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