version 1.10, 2000/10/04 14:09:01
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version 1.219, 2009/04/14 23:52:07
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# The LearningOnline Network with CAPA |
# The LearningOnline Network with CAPA |
# User Roles Screen |
# User Roles Screen |
# (Directory Indexer |
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# (Login Screen |
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# 5/21/99,5/22,5/25,5/26,5/31,6/2,6/10,7/12,7/14 Gerd Kortemeyer) |
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# 11/23 Gerd Kortemeyer) |
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# 1/14,03/06,06/01,07/22,07/24,07/25, |
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# 09/04,09/06,09/28,09/29,09/30,10/2 Gerd Kortemeyer |
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# |
# |
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# $Id$ |
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# |
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# Copyright Michigan State University Board of Trustees |
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# |
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# This file is part of the LearningOnline Network with CAPA (LON-CAPA). |
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# |
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# LON-CAPA is free software; you can redistribute it and/or modify |
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# it under the terms of the GNU General Public License as published by |
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# the Free Software Foundation; either version 2 of the License, or |
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# (at your option) any later version. |
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# |
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# LON-CAPA is distributed in the hope that it will be useful, |
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# but WITHOUT ANY WARRANTY; without even the implied warranty of |
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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# GNU General Public License for more details. |
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# |
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# You should have received a copy of the GNU General Public License |
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# along with LON-CAPA; if not, write to the Free Software |
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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# |
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# /home/httpd/html/adm/gpl.txt |
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# |
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# http://www.lon-capa.org/ |
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# |
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### |
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=pod |
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=head1 NAME |
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Apache::lonroles - User Roles Screen |
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=head1 SYNOPSIS |
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Invoked by /etc/httpd/conf/srm.conf: |
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<Location /adm/roles> |
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PerlAccessHandler Apache::lonacc |
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SetHandler perl-script |
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PerlHandler Apache::lonroles |
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ErrorDocument 403 /adm/login |
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ErrorDocument 500 /adm/errorhandler |
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</Location> |
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=head1 OVERVIEW |
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=head2 Choosing Roles |
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C<lonroles> is a handler that allows a user to switch roles in |
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mid-session. LON-CAPA attempts to work with "No Role Specified", the |
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default role that a user has before selecting a role, as widely as |
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possible, but certain handlers for example need specification which |
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course they should act on, etc. Both in this scenario, and when the |
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handler determines via C<lonnet>'s C<&allowed> function that a certain |
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action is not allowed, C<lonroles> is used as error handler. This |
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allows the user to select another role which may have permission to do |
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what they were trying to do. C<lonroles> can also be accessed via the |
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B<CRS> button in the Remote Control. |
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=begin latex |
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\begin{figure} |
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\begin{center} |
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\includegraphics[width=0.45\paperwidth,keepaspectratio]{Sample_Roles_Screen} |
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\caption{\label{Sample_Roles_Screen}Sample Roles Screen} |
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\end{center} |
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\end{figure} |
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=end latex |
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=head2 Role Initialization |
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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. |
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=head1 INTRODUCTION |
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This module enables a user to select what role he wishes to |
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operate under (instructor, student, teaching assistant, course |
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coordinator, etc). These roles are pre-established by the actions |
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of upper-level users. |
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This is part of the LearningOnline Network with CAPA project |
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described at http://www.lon-capa.org. |
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=head1 HANDLER SUBROUTINE |
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This routine is called by Apache and mod_perl. |
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=over 4 |
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=item * |
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Roles Initialization (yes/no) |
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=item * |
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Get Error Message from Environment |
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=item * |
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Who is this? |
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=item * |
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Generate Page Output |
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=item * |
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Choice or no choice |
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=item * |
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Table |
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=item * |
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Privileges |
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=back |
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=cut |
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package Apache::lonroles; |
package Apache::lonroles; |
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use strict; |
use strict; |
use Apache::lonnet(); |
use Apache::lonnet; |
use Apache::lonuserstate(); |
use Apache::lonuserstate(); |
use Apache::Constants qw(:common); |
use Apache::Constants qw(:common); |
use Apache::File(); |
use Apache::File(); |
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use Apache::lonmenu; |
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use Apache::loncommon; |
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use Apache::lonhtmlcommon; |
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use Apache::lonannounce; |
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use Apache::lonlocal; |
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use Apache::lonpageflip(); |
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use Apache::lonnavdisplay(); |
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use GDBM_File; |
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use LONCAPA qw(:DEFAULT :match); |
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use HTML::Entities; |
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sub redirect_user { |
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my ($r,$title,$url,$msg,$launch_nav) = @_; |
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$msg = $title if (! defined($msg)); |
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&Apache::loncommon::content_type($r,'text/html'); |
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&Apache::loncommon::no_cache($r); |
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$r->send_http_header; |
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my $swinfo=&Apache::lonmenu::rawconfig(); |
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my $navwindow; |
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if ($launch_nav eq 'on') { |
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$navwindow.=&Apache::lonnavdisplay::launch_win('now',undef,undef, |
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($url =~ m-^/adm/whatsnew-)); |
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} else { |
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$navwindow.=&Apache::lonnavmaps::close(); |
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} |
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my $start_page = &Apache::loncommon::start_page('Switching Role',undef, |
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{'redirect' => [1,$url],}); |
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my $end_page = &Apache::loncommon::end_page(); |
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# Note to style police: |
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# This must only replace the spaces, nothing else, or it bombs elsewhere. |
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$url=~s/ /\%20/g; |
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$r->print(<<ENDREDIR); |
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$start_page |
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<script type="text/javascript"> |
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$swinfo |
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</script> |
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$navwindow |
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<h1>$msg</h1> |
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$end_page |
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ENDREDIR |
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return; |
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} |
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sub error_page { |
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my ($r,$error,$dest)=@_; |
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&Apache::loncommon::content_type($r,'text/html'); |
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&Apache::loncommon::no_cache($r); |
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$r->send_http_header; |
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return OK if $r->header_only; |
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$r->print(&Apache::loncommon::start_page('Problems during Course Initialization'). |
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'<script type="text/javascript">'. |
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&Apache::lonmenu::rawconfig().'</script>'. |
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'<p>'.&mt('The following problems occurred:'). |
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$error. |
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'</p><br /><a href="'.$dest.'">'.&mt('Continue').'</a>'. |
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&Apache::loncommon::end_page()); |
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} |
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sub handler { |
sub handler { |
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my $r = shift; |
my $r = shift; |
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my $now=time; |
my $now=time; |
my $then=$ENV{'user.login.time'}; |
my $then=$env{'user.login.time'}; |
my $envkey; |
my $envkey; |
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my %dcroles = (); |
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my $numdc = &check_fordc(\%dcroles,$then); |
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&Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'}); |
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# ================================================================== Roles Init |
# ================================================================== Roles Init |
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if ($env{'form.selectrole'}) { |
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if ($ENV{'form.selectrole'}) { |
my $locknum=&Apache::lonnet::get_locks(); |
foreach $envkey (keys %ENV) { |
if ($locknum) { return 409; } |
if ($envkey=~/^user\.role\./) { |
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my ($dum1,$dum2,$role,@pwhere)=split(/\./,$envkey); |
if ($env{'form.newrole'}) { |
my $where=join('.',@pwhere); |
$env{'form.'.$env{'form.newrole'}}=1; |
my $trolecode=$role.'.'.$where; |
} |
if ($ENV{'form.'.$trolecode}) { |
if ($env{'request.course.id'}) { |
my ($tstart,$tend)=split(/\./,$ENV{$envkey}); |
# Check if user is CC trying to select a course role |
my $tstatus='is'; |
if ($env{'form.switchrole'}) { |
if ($tstart) { |
if (!defined($env{'user.role.'.$env{'form.switchrole'}})) { |
if ($tstart>$then) { |
&adhoc_course_role($then); |
$tstatus='future'; |
} |
} |
} |
} |
my %temp=('logout_'.$env{'request.course.id'} => time); |
if ($tend) { |
&Apache::lonnet::put('email_status',\%temp); |
if ($tend<$then) { $tstatus='expired'; } |
&Apache::lonnet::delenv('user.state.'.$env{'request.course.id'}); |
if ($tend>$now) { $tstatus='will_not'; } |
} |
} |
&Apache::lonnet::appenv({"request.course.id" => '', |
if ($tstatus eq 'is') { |
"request.course.fn" => '', |
&Apache::lonnet::appenv('request.role' => $trolecode); |
"request.course.uri" => '', |
my ($cdom,$cnum)=split(/\//,$where); |
"request.course.sec" => '', |
if ($cnum) { |
"request.role" => 'cm', |
&Apache::lonuserstate::readmap($where); |
"request.role.adv" => $env{'user.adv'}, |
$r->internal_redirect($ENV{'form.orgurl'}); |
"request.role.domain" => $env{'user.domain'}}); |
return OK; |
# Check if user is a DC trying to enter a course or author space and needs privs to be created |
} |
if ($numdc > 0) { |
} |
foreach my $envkey (keys %env) { |
} |
# Is this an ad-hoc CC-role? |
} |
if (my ($domain,$coursenum) = |
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($envkey =~ m-^form\.cc\./($match_domain)/($match_courseid)$-)) { |
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if ($dcroles{$domain}) { |
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&Apache::lonnet::check_adhoc_privs($domain,$coursenum, |
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$then,$now,'cc'); |
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} |
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last; |
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} |
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# Is this an ad-hoc CA-role? |
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if (my ($domain,$user) = |
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($envkey =~ m-^form\.ca\./($match_domain)/($match_username)$-)) { |
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if (($domain eq $env{'user.domain'}) && ($user eq $env{'user.name'})) { |
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delete($env{$envkey}); |
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$env{'form.au./'.$domain.'/'} = 1; |
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my ($server_status,$home) = &check_author_homeserver($user,$domain); |
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if ($server_status eq 'switchserver') { |
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my $trolecode = 'au./'.$domain.'/'; |
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my $switchserver = '/adm/switchserver?otherserver='.$home.'&role='.$trolecode; |
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$r->internal_redirect($switchserver); |
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} |
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last; |
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} |
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if (my ($castart,$caend) = ($env{'user.role.ca./'.$domain.'/'.$user} =~ /^(\d*)\.(\d*)$/)) { |
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if (((($castart) && ($castart < $now)) || !$castart) && |
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((!$caend) || (($caend) && ($caend > $now)))) { |
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my ($server_status,$home) = &check_author_homeserver($user,$domain); |
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if ($server_status eq 'switchserver') { |
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my $trolecode = 'ca./'.$domain.'/'.$user; |
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my $switchserver = '/adm/switchserver?otherserver='.$home.'&role='.$trolecode; |
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$r->internal_redirect($switchserver); |
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} |
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last; |
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} |
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} |
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# Check if author blocked ca-access |
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my %blocked=&Apache::lonnet::get('environment',['domcoord.author'],$domain,$user); |
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if ($blocked{'domcoord.author'} eq 'blocked') { |
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delete($env{$envkey}); |
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$env{'user.error.msg'}=':::1:User '.$user.' in domain '.$domain.' blocked domain coordinator access'; |
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last; |
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} |
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if ($dcroles{$domain}) { |
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my ($server_status,$home) = &check_author_homeserver($user,$domain); |
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if (($server_status eq 'ok') || ($server_status eq 'switchserver')) { |
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&Apache::lonnet::check_adhoc_privs($domain,$user,$then, |
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$now,'ca'); |
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if ($server_status eq 'switchserver') { |
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my $trolecode = 'ca./'.$domain.'/'.$user; |
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my $switchserver = '/adm/switchserver?' |
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.'otherserver='.$home.'&role='.$trolecode; |
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$r->internal_redirect($switchserver); |
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} |
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} else { |
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delete($env{$envkey}); |
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} |
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} else { |
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delete($env{$envkey}); |
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} |
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last; |
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} |
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} |
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} |
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foreach $envkey (keys %env) { |
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next if ($envkey!~/^user\.role\./); |
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my ($where,$trolecode,$role,$tstatus,$tend,$tstart); |
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&Apache::lonnet::role_status($envkey,$then,$now,\$role,\$where, |
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\$trolecode,\$tstatus,\$tstart,\$tend); |
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if ($env{'form.'.$trolecode}) { |
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if ($tstatus eq 'is') { |
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$where=~s/^\///; |
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my ($cdom,$cnum,$csec)=split(/\//,$where); |
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# check for course groups |
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my %coursegroups = &Apache::lonnet::get_active_groups( |
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$env{'user.domain'},$env{'user.name'},$cdom, $cnum); |
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my $cgrps = join(':',keys(%coursegroups)); |
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# store role if recent_role list being kept |
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if ($env{'environment.recentroles'}) { |
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my %frozen_roles = |
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&Apache::lonhtmlcommon::get_recent_frozen('roles',$env{'environment.recentrolesn'}); |
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&Apache::lonhtmlcommon::store_recent('roles', |
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$trolecode,' ',$frozen_roles{$trolecode}); |
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} |
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# check for keyed access |
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if (($role eq 'st') && |
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($env{'course.'.$cdom.'_'.$cnum.'.keyaccess'} eq 'yes')) { |
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# who is key authority? |
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my $authdom=$cdom; |
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my $authnum=$cnum; |
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if ($env{'course.'.$cdom.'_'.$cnum.'.keyauth'}) { |
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($authnum,$authdom)= |
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split(/:/,$env{'course.'.$cdom.'_'.$cnum.'.keyauth'}); |
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} |
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# check with key authority |
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unless (&Apache::lonnet::validate_access_key( |
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$env{'environment.key.'.$cdom.'_'.$cnum}, |
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$authdom,$authnum)) { |
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# there is no valid key |
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if ($env{'form.newkey'}) { |
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# student attempts to register a new key |
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&Apache::loncommon::content_type($r,'text/html'); |
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&Apache::loncommon::no_cache($r); |
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$r->send_http_header; |
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my $swinfo=&Apache::lonmenu::rawconfig(); |
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my $start_page=&Apache::loncommon::start_page |
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('Verifying Access Key to Unlock this Course'); |
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my $end_page=&Apache::loncommon::end_page(); |
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my $buttontext=&mt('Enter Course'); |
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my $message=&mt('Successfully registered key'); |
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my $assignresult= |
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&Apache::lonnet::assign_access_key( |
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$env{'form.newkey'}, |
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$authdom,$authnum, |
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$cdom,$cnum, |
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$env{'user.domain'}, |
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$env{'user.name'}, |
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&mt('Assigned from [_1] at [_2] for [_3]' |
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,$ENV{'REMOTE_ADDR'} |
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,&Apache::lonlocal::locallocaltime() |
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,$trolecode) |
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); |
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unless ($assignresult eq 'ok') { |
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$assignresult=~s/^error\:\s*//; |
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$message=&mt($assignresult). |
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'<br /><a href="/adm/logout">'. |
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&mt('Logout').'</a>'; |
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$buttontext=&mt('Re-Enter Key'); |
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} |
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$r->print(<<ENDENTEREDKEY); |
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$start_page |
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<script type="text/javascript"> |
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$swinfo |
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</script> |
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<form method="post"> |
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<input type="hidden" name="selectrole" value="1" /> |
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<input type="hidden" name="$trolecode" value="1" /> |
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<span class="LC_fontsize_large">$message</span><br /> |
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<input type="submit" value="$buttontext" /> |
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</form> |
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$end_page |
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ENDENTEREDKEY |
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return OK; |
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} else { |
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# print form to enter a new key |
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&Apache::loncommon::content_type($r,'text/html'); |
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&Apache::loncommon::no_cache($r); |
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$r->send_http_header; |
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my $swinfo=&Apache::lonmenu::rawconfig(); |
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my $start_page=&Apache::loncommon::start_page |
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('Enter Access Key to Unlock this Course'); |
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my $end_page=&Apache::loncommon::end_page(); |
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$r->print(<<ENDENTERKEY); |
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$start_page |
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<script type="text/javascript"> |
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$swinfo |
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</script> |
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<form method="post"> |
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<input type="hidden" name="selectrole" value="1" /> |
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<input type="hidden" name="$trolecode" value="1" /> |
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<input type="text" size="20" name="newkey" value="$env{'form.newkey'}" /> |
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<input type="submit" value="Enter key" /> |
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</form> |
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$end_page |
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ENDENTERKEY |
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return OK; |
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} |
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} |
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} |
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&Apache::lonnet::log($env{'user.domain'}, |
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$env{'user.name'}, |
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$env{'user.home'}, |
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"Role ".$trolecode); |
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&Apache::lonnet::appenv( |
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{'request.role' => $trolecode, |
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'request.role.domain' => $cdom, |
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'request.course.sec' => $csec, |
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'request.course.groups' => $cgrps}); |
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my $tadv=0; |
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if (($cnum) && ($role ne 'ca') && ($role ne 'aa')) { |
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my $msg; |
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my ($furl,$ferr)= |
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&Apache::lonuserstate::readmap($cdom.'/'.$cnum); |
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if (($env{'form.orgurl'}) && |
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($env{'form.orgurl'}!~/^\/adm\/flip/)) { |
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my $dest=$env{'form.orgurl'}; |
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if ($env{'form.symb'}) { |
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if ($dest =~ /\?/) { |
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$dest .= '&'; |
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} else { |
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$dest .= '?' |
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} |
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$dest .= 'symb='.$env{'form.symb'}; |
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} |
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if (&Apache::lonnet::allowed('adv') eq 'F') { $tadv=1; } |
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&Apache::lonnet::appenv({'request.role.adv'=>$tadv}); |
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if (($ferr) && ($tadv)) { |
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&error_page($r,$ferr,$dest); |
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} else { |
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$r->internal_redirect($dest); |
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} |
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return OK; |
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} else { |
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if (!$env{'request.course.id'}) { |
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&Apache::lonnet::appenv( |
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{"request.course.id" => $cdom.'_'.$cnum}); |
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$furl='/adm/roles?tryagain=1'; |
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$msg= |
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'<h1><span class="LC_error">'. |
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&mt('Could not initialize [_1] at this time.', |
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$env{'course.'.$cdom.'_'.$cnum.'.description'}). |
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'</span></h1><h3>'.&mt('Please try again.').'</h3>'.$ferr; |
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} |
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if (&Apache::lonnet::allowed('adv') eq 'F') { $tadv=1; } |
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&Apache::lonnet::appenv({'request.role.adv'=>$tadv}); |
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|
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if (($ferr) && ($tadv)) { |
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&error_page($r,$ferr,$furl); |
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} else { |
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# Check to see if the user is a CC entering a course |
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# for the first time |
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my (undef, undef, $role, $courseid) = split(/\./, $envkey); |
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if (substr($courseid, 0, 1) eq '/') { |
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$courseid = substr($courseid, 1); |
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} |
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$courseid =~ s/\//_/; |
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if ($role eq 'cc' && $env{'course.' . $courseid . |
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'.course.helper.not.run'}) { |
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$furl = "/adm/helper/course.initialization.helper"; |
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# Send the user to the course they selected |
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} elsif ($env{'request.course.id'}) { |
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if ($env{'form.destinationurl'}) { |
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my $dest = $env{'form.destinationurl'}; |
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if ($env{'form.destsymb'} ne '') { |
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my $esc_symb = &HTML::Entities::encode($env{'form.destsymb'},'"<>&'); |
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$dest .= '?symb='.$esc_symb; |
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} |
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&redirect_user($r,&mt('Entering [_1]', |
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$env{'course.'.$courseid.'.description'}), |
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$dest,$msg, |
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$env{'environment.remotenavmap'}); |
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return OK; |
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} |
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if (&Apache::lonnet::allowed('whn', |
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$env{'request.course.id'}) |
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|| &Apache::lonnet::allowed('whn', |
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$env{'request.course.id'}.'/' |
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.$env{'request.course.sec'}) |
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) { |
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my $startpage = &courseloadpage($courseid); |
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unless ($startpage eq 'firstres') { |
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$msg = &mt('Entering [_1] ...', |
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$env{'course.'.$courseid.'.description'}); |
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&redirect_user($r,&mt('New in course'), |
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'/adm/whatsnew?refpage=start',$msg, |
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$env{'environment.remotenavmap'}); |
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return OK; |
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} |
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} |
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} |
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# Are we allowed to look at the first resource? |
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if ($furl !~ m|^/adm/|) { |
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# 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 |
# =============================================================== No Roles Init |
|
|
$r->content_type('text/html'); |
&Apache::loncommon::content_type($r,'text/html'); |
|
&Apache::loncommon::no_cache($r); |
$r->send_http_header; |
$r->send_http_header; |
return OK if $r->header_only; |
return OK if $r->header_only; |
|
|
|
my $brcrum =[{href=>"/admm/roles",text=>"User Roles"}]; |
|
my $swinfo=&Apache::lonmenu::rawconfig(); |
|
my $start_page=&Apache::loncommon::start_page('My Roles',undef,{bread_crumbs=>$brcrum}); |
|
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 be unavailable.').'</span><br />'; |
|
|
$r->print(<<ENDHEADER); |
$r->print(<<ENDHEADER); |
<html> |
$start_page |
<head> |
<br /> |
<title>LON-CAPA User Roles</title> |
<noscript> |
</head><body bgcolor="#FFFFFF"> |
$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 |
ENDHEADER |
|
|
# ------------------------------------------ Get Error Message from Environment |
# ------------------------------------------ Get Error Message from Environment |
|
|
my ($fn,$priv,$nochoose,$error,$msg)=split(/:/,$ENV{'user.error.msg'}); |
my ($fn,$priv,$nochoose,$error,$msg)=split(/:/,$env{'user.error.msg'}); |
$r->log_reason( |
if ($env{'user.error.msg'}) { |
"$msg for $ENV{'user.name'} domain $ENV{'user.domain'} access $priv",$fn); |
$r->log_reason( |
|
"$msg for $env{'user.name'} domain $env{'user.domain'} access $priv",$fn); |
# ---------------------------------------------------------------- Who is this? |
|
|
|
my $advanced=0; |
|
foreach $envkey (keys %ENV) { |
|
if ($envkey=~/^user\.role\./) { |
|
my ($dum1,$dum2,$role,@pwhere)=split(/\./,$envkey); |
|
if ($role ne 'st') { $advanced=1; } |
|
} |
|
} |
} |
|
|
# ---------------------------------------------- Get cached course descriptions |
# ------------------------------------------------- Can this user re-init, etc? |
|
|
my %cdes=Apache::lonnet::dump('coursedescriptions'); |
my $advanced=$env{'user.adv'}; |
|
&Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['tryagain']); |
|
my $tryagain=$env{'form.tryagain'}; |
|
my $reinit=$env{'user.reinit'}; |
|
delete $env{'user.reinit'}; |
|
|
# -------------------------------------------------------- Generate Page Output |
# -------------------------------------------------------- Generate Page Output |
# --------------------------------------------------------------- Error Header? |
# --------------------------------------------------------------- Error Header? |
if ($error) { |
if ($error) { |
$r->print("<h1>LON-CAPA Access Control</h1>"); |
$r->print("<h1>".&mt('LON-CAPA Access Control')."</h1>"); |
$r->print("<hr><pre>Access : ". |
$r->print("<!-- LONCAPAACCESSCONTROLERRORSCREEN --><hr /><pre>"); |
Apache::lonnet::plaintext($priv)."\n"); |
if ($priv ne '') { |
$r->print("Resource: $fn\n"); |
$r->print(&mt('Access : ').&Apache::lonnet::plaintext($priv)."\n"); |
$r->print("Action : $msg\n</pre><hr>"); |
} |
|
if ($fn ne '') { |
|
$r->print(&mt('Resource: ').&Apache::lonenc::check_encrypt($fn)."\n"); |
|
} |
|
if ($msg ne '') { |
|
$r->print(&mt('Action : ').$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 { |
} else { |
$r->print("<h1>LON-CAPA User Roles</h1>"); |
if ($env{'user.error.msg'}) { |
|
if ($reinit) { |
|
$r->print( |
|
'<h3><span class="LC_error">'. |
|
&mt('As your session file for the course has expired, you will need to re-select the course.').'</span></h3>'); |
|
} else { |
|
$r->print( |
|
'<h3><span class="LC_error">'. |
|
&mt('You need to choose another user role or enter a specific course for this function').'</span></h3>'); |
|
} |
|
} |
} |
} |
# -------------------------------------------------------- Choice or no choice? |
# -------------------------------------------------------- Choice or no choice? |
if ($nochoose) { |
if ($nochoose) { |
if ($advanced) { |
$r->print("<h2>".&mt('Sorry ...')."</h2>\n<span class='LC_error'>". |
$r->print("<h2>Assigned User Roles</h2>\n"); |
&mt('This action is currently not authorized.').'</span>'. |
} else { |
&Apache::loncommon::end_page()); |
$r->print("<h2>Sorry ...</h2>\nThis resource might be part of"); |
return OK; |
if ($ENV{'request.course.id'}) { |
|
$r->print(' another'); |
|
} else { |
|
$r->print(' a certain'); |
|
} |
|
$r->print(' course.</body></html>'); |
|
return OK; |
|
} |
|
} else { |
} else { |
if ($advanced) { |
if (($ENV{'REDIRECT_QUERY_STRING'}) && ($fn)) { |
$r->print("<h2>Select a User Role</h2>\n"); |
$fn.='?'.$ENV{'REDIRECT_QUERY_STRING'}; |
} else { |
|
$r->print("<h2>Enter a Course</h2>\n"); |
|
} |
} |
$r->print('<form method=post action="'.$r->uri.'">'); |
$r->print('<form method="post" name="rolechoice" action="'.(($fn)?$fn:$r->uri).'">'); |
$r->print('<input type=hidden name=orgurl value="'.$fn.'">'); |
$r->print('<input type="hidden" name="orgurl" value="'.$fn.'" />'); |
$r->print('<input type=hidden name=selectrole value=1>'); |
$r->print('<input type="hidden" name="selectrole" value="1" />'); |
} |
$r->print('<input type="hidden" name="newrole" value="" />'); |
# ----------------------------------------------------------------------- Table |
|
$r->print('<table><tr>'); |
|
unless ($nochoose) { $r->print('<th> </th>'); } |
|
if ($advanced) { |
|
$r->print('<th>User Role</th><th colspan=2>Extent</th>'. |
|
'<th>Start</th><th>End</th><th>Remark</th></tr>'."\n"); |
|
} else { |
|
$r->print('<th>Course</th></tr>'."\n"); |
|
} |
} |
|
my (%roletext,%sortrole,%roleclass); |
foreach $envkey (sort keys %ENV) { |
my $countactive=0; |
|
my $countfuture=0; |
|
my $countwill=0; |
|
my $inrole=0; |
|
my $possiblerole=''; |
|
my %futureroles; |
|
my %roles_nextlogin; |
|
my %timezones; |
|
foreach $envkey (sort keys %env) { |
|
my $button = 1; |
|
my $switchserver=''; |
|
my $roletext; |
|
my $sortkey; |
if ($envkey=~/^user\.role\./) { |
if ($envkey=~/^user\.role\./) { |
my ($dum1,$dum2,$role,@pwhere)=split(/\./,$envkey); |
my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend); |
my $where=join('.',@pwhere); |
&Apache::lonnet::role_status($envkey,$then,$now,\$role,\$where, |
my $trolecode=$role.'.'.$where; |
\$trolecode,\$tstatus,\$tstart,\$tend); |
my ($tstart,$tend)=split(/\./,$ENV{$envkey}); |
next if (!defined($role) || $role eq '' || $role =~ /^gr/); |
my $tremark=''; |
my $timezone = &role_timezone($where,\%timezones); |
my $tstatus='is'; |
$tremark=''; |
my $tpstart=' '; |
$tpstart=' '; |
my $tpend=' '; |
$tpend=' '; |
if ($tstart) { |
if ($tstart) { |
if ($tstart>$then) { |
$tpstart=&Apache::lonlocal::locallocaltime($tstart,$timezone); |
$tstatus='future'; |
|
if ($tstart<$now) { $tstatus='will'; } |
|
} |
|
$tpstart=localtime($tstart); |
|
} |
} |
if ($tend) { |
if ($tend) { |
if ($tend<$then) { $tstatus='expired'; } |
$tpend=&Apache::lonlocal::locallocaltime($tend,$timezone); |
if ($tend>$now) { $tstatus='will_not'; } |
|
$tpend=localtime($tend); |
|
} |
} |
if ($ENV{'request.role'} eq $trolecode) { |
if ($env{'request.role'} eq $trolecode) { |
$tstatus='selected'; |
$tstatus='selected'; |
} |
} |
my $tbg; |
my $tbg; |
if ($tstatus eq 'is') { |
if (($tstatus eq 'is') |
$tbg='#77FF77'; |
|| ($tstatus eq 'selected') |
} elsif ($tstatus eq 'future') { |
|| ($tstatus eq 'will') |
$tbg='#FFFF77'; |
|| ($tstatus eq 'future') |
} elsif ($tstatus eq 'will') { |
|| ($env{'form.showall'})) { |
$tbg='#FFAA77'; |
if ($tstatus eq 'is') { |
$tremark.='Active at next login. '; |
$tbg='LC_roles_is'; |
} elsif ($tstatus eq 'expired') { |
$possiblerole=$trolecode; |
$tbg='#FF7777'; |
$countactive++; |
} elsif ($tstatus eq 'will_not') { |
} elsif ($tstatus eq 'future') { |
$tbg='#AAFF77'; |
$tbg='LC_roles_future'; |
$tremark.='Expired after logout. '; |
$button=0; |
} elsif ($tstatus eq 'selected') { |
$futureroles{$trolecode} = $tstart.':'.$tend; |
$tbg='#33FF33'; |
$countfuture ++; |
$tremark.='Currently selected. '; |
} elsif ($tstatus eq 'will') { |
} |
$tbg='LC_roles_will'; |
my $trole; |
$tremark.=&mt('Active at next login.').' '; |
if ($role =~ /^cr\//) { |
$roles_nextlogin{$trolecode} = $tstart.':'.$tend; |
my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$role); |
$countwill ++; |
$tremark.='<br>Defined by '.$rauthor.' at '.$rdomain.'.'; |
} elsif ($tstatus eq 'expired') { |
$trole=$rrole; |
$tbg='LC_roles_expired'; |
|
$button=0; |
|
} elsif ($tstatus eq 'will_not') { |
|
$tbg='LC_roles_will_not'; |
|
$tremark.=&mt('Expired after logout.').' '; |
|
} elsif ($tstatus eq 'selected') { |
|
$tbg='LC_roles_selected'; |
|
$inrole=1; |
|
$countactive++; |
|
$tremark.=&mt('Currently selected.').' '; |
|
} |
|
my $trole; |
|
if ($role =~ /^cr\//) { |
|
my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$role); |
|
if ($tremark) { $tremark.='<br />'; } |
|
$tremark.=&mt('Defined by [_1] at [_2].',$rauthor,$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')) { |
|
$twhere.=' <span class="LC_fontsize_small">'. |
|
&Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$trest,$tdom). |
|
'</span>'; |
|
} |
|
} else { |
|
my %newhash=&Apache::lonnet::coursedescription($tcourseid); |
|
if (%newhash) { |
|
$sortkey=$role."\0".$tdom."\0".$newhash{'description'}. |
|
"\0".$envkey; |
|
$twhere=$newhash{'description'}. |
|
' <span class="LC_fontsize_small">'. |
|
&Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$trest,$tdom). |
|
'</span>'; |
|
$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,$tbg,$trole,$twhere,$tpstart,$tpend,$nochoose,$button,$switchserver,$reinit); |
|
$roletext{$envkey}=$roletext; |
|
if (!$sortkey) {$sortkey=$twhere."\0".$envkey;} |
|
$sortrole{$sortkey}=$envkey; |
|
$roleclass{$envkey}=$ttype; |
|
} |
|
} |
|
} |
|
if ($env{'user.adv'}) { |
|
$r->print( |
|
'<p><label>'.&mt('Show all roles').': <input type="checkbox" name="showall"'); |
|
if ($env{'form.showall'}) { $r->print(' checked="checked" '); } |
|
$r->print(' /></label><input type="submit" value="'.&mt('Display').'" /></p>'); |
|
} else { |
|
if ($countactive > 0) { |
|
&queued_selfenrollment($r); |
|
my $domdesc = &Apache::lonnet::domain($env{'user.domain'},'description'); |
|
my $esc_dom = &HTML::Entities::encode($env{'user.domain'},'"<>&'); |
|
$r->print('<p>'.&mt('[_1]Visit the [_2]Course Catalog[_3] to view all [_4] LON-CAPA courses.','<b>','<a href="/adm/coursecatalog?showdom='.$esc_dom.'">','</a></b>',$domdesc).'<br />'.&mt('If a course is [_1]not[_2] in your list of current courses below, you may be able to enroll if self-enrollment is permitted.','<b>','</b>').'</p>'); |
|
} |
|
} |
|
|
|
# No active roles |
|
if ($countactive==0) { |
|
if ($inrole) { |
|
$r->print('<h2>'.&mt('Currently no additional roles or courses').'</h2>'); |
|
} else { |
|
$r->print('<h2>'.&mt('Currently no active roles or courses').'</h2>'); |
|
} |
|
&findcourse_advice($r); |
|
$r->print('</form>'); |
|
if ($countfuture) { |
|
$r->print(&mt('The following [quant,_1,role,roles] will become active in the future:',$countfuture)); |
|
my $doheaders = &roletable_headers($r,\%roleclass,\%sortrole, |
|
$nochoose); |
|
&print_rolerows($r,$doheaders,\%roleclass,\%sortrole,\%dcroles, |
|
\%roletext); |
|
my $tremark=''; |
|
my $tbg; |
|
if ($env{'request.role'} eq 'cm') { |
|
$tbg="LC_roles_selected"; |
|
$tremark=&mt('Currently selected.').' '; |
|
} else { |
|
$tbg="LC_roles_is"; |
|
} |
|
$r->print(&Apache::loncommon::start_data_table_row() |
|
.'<td class="'.$tbg.'"> </td>' |
|
.'<td colspan="3">' |
|
.&mt('No role specified') |
|
.'</td>' |
|
.'<td>'.$tremark.' </td>' |
|
.&Apache::loncommon::end_data_table_row() |
|
); |
|
|
|
$r->print(&Apache::loncommon::end_data_table()); |
|
} |
|
$r->print(&Apache::loncommon::end_page()); |
|
return OK; |
|
} |
|
# ----------------------------------------------------------------------- Table |
|
unless ((!&Apache::lonmenu::show_course()) || ($nochoose) || ($countactive==1)) { |
|
$r->print("<h2>".&mt('Select a Course to Enter')."</h2>\n"); |
|
} |
|
my $doheaders = &roletable_headers($r,\%roleclass,\%sortrole,$nochoose); |
|
if ($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 .= &adhoc_roles_row($1,'recent'); |
|
} |
|
} elsif ($numdc > 0) { |
|
unless ($_ =~/^error\:/) { |
|
$output.=&display_cc_role('user.role.'.$_); |
|
} |
|
} |
|
} |
|
if ($output) { |
|
$r->print(&Apache::loncommon::start_data_table_empty_row() |
|
.'<td align="center" colspan="5">' |
|
.&mt('Recent Roles') |
|
.'</td>' |
|
.&Apache::loncommon::end_data_table_empty_row() |
|
); |
|
$r->print($output); |
|
$doheaders ++; |
|
} |
|
} |
|
|
|
if ($numdc > 0) { |
|
$r->print(&coursepick_jscript()); |
|
$r->print(&Apache::loncommon::coursebrowser_javascript(). |
|
&Apache::loncommon::authorbrowser_javascript()); |
|
} |
|
&print_rolerows($r,$doheaders,\%roleclass,\%sortrole,\%dcroles,\%roletext); |
|
if ($countactive > 1) { |
|
my $tremark=''; |
|
my $tbg; |
|
if ($env{'request.role'} eq 'cm') { |
|
$tbg="LC_roles_selected"; |
|
$tremark=&mt('Currently selected.').' '; |
|
} else { |
|
$tbg="LC_roles_is"; |
|
} |
|
$r->print(&Apache::loncommon::start_data_table_row()); |
|
unless ($nochoose) { |
|
if ($env{'request.role'} ne 'cm') { |
|
$r->print('<td class="'.$tbg.'"><input type="submit" value="'. |
|
&mt('Select').'" name="cm" /></td>'); |
} else { |
} else { |
$trole=Apache::lonnet::plaintext($role); |
$r->print('<td class="'.$tbg.'"> </td>'); |
|
} |
|
} |
|
$r->print('<td colspan="3">' |
|
.&mt('No role specified') |
|
.'</td>' |
|
.'<td>'.$tremark.' </td>' |
|
.&Apache::loncommon::end_data_table_row() |
|
); |
|
} |
|
$r->print(&Apache::loncommon::end_data_table()); |
|
unless ($nochoose) { |
|
$r->print("</form>\n"); |
|
} |
|
# ------------------------------------------------------------ Privileges Info |
|
if (($advanced) && (($env{'user.error.msg'}) || ($error))) { |
|
$r->print('<hr /><h2>'.&mt('Current Privileges').'</h2>'); |
|
$r->print(&privileges_info()); |
|
} |
|
$r->print(&Apache::lonnet::getannounce()); |
|
if ($advanced) { |
|
my $esc_dom = &HTML::Entities::encode($env{'user.domain'},'"<>&'); |
|
$r->print('<p><small><i>' |
|
.&mt('This is LON-CAPA [_1]',$r->dir_config('lonVersion')) |
|
.'</i><br />' |
|
.'<a href="/adm/logout">'.&mt('Logout').'</a> ' |
|
.'<a href="/adm/coursecatalog?showdom='.$esc_dom.'">' |
|
.&mt('Course Catalog') |
|
.'</small></p>'); |
|
} |
|
$r->print(&Apache::loncommon::end_page()); |
|
return OK; |
|
} |
|
|
|
sub role_timezone { |
|
my ($where,$timezones) = @_; |
|
my $timezone; |
|
if (ref($timezones) eq 'HASH') { |
|
if ($where =~ m{^/($match_domain)/($match_courseid)}) { |
|
my $cdom = $1; |
|
my $cnum = $2; |
|
if ($cdom && $cnum) { |
|
if (!exists($timezones->{$cdom.'_'.$cnum})) { |
|
my %timehash = |
|
&Apache::lonnet::get('environment',['timezone'],$cdom,$cnum); |
|
if ($timehash{'timezone'} eq '') { |
|
if (!exists($timezones->{$cdom})) { |
|
my %domdefaults = |
|
&Apache::lonnet::get_domain_defaults($cdom); |
|
if ($domdefaults{'timezone_def'} eq '') { |
|
$timezones->{$cdom} = 'local'; |
|
} else { |
|
$timezones->{$cdom} = $domdefaults{'timezone_def'}; |
|
} |
|
} |
|
$timezones->{$cdom.'_'.$cnum} = $timezones->{$cdom}; |
|
} else { |
|
$timezones->{$cdom.'_'.$cnum} = |
|
&Apache::lonlocal::gettimezone($timehash{'timezone'}); |
|
} |
|
} |
|
$timezone = $timezones->{$cdom.'_'.$cnum}; |
} |
} |
my $ttype; |
} else { |
my $twhere; |
my ($tdom) = ($where =~ m{^/($match_domain)}); |
my ($tdom,$trest)= |
if ($tdom) { |
split(/\//,Apache::lonnet::declutter($where)); |
if (!exists($timezones->{$tdom})) { |
if ($trest) { |
my %domdefaults = &Apache::lonnet::get_domain_defaults($tdom); |
$ttype='Course'; |
if ($domdefaults{'timezone_def'} eq '') { |
my $tcourseid=$tdom.'/'.$trest; |
$timezones->{$tdom} = 'local'; |
if ($cdes{$tcourseid}) { |
|
$twhere=$cdes{$tcourseid}; |
|
} else { |
|
my %newhash=Apache::lonnet::coursedescription($tcourseid); |
|
if (%newhash) { |
|
$twhere=$newhash{'description'}; |
|
} else { |
} else { |
$twhere='Currently not available'; |
$timezones->{$tdom} = $domdefaults{'timezone_def'}; |
} |
} |
$cdes{$tcourseid}=$twhere; |
} |
} |
$timezone = $timezones->{$tdom}; |
} elsif ($tdom) { |
|
$ttype='Domain'; |
|
$twhere=$tdom; |
|
} else { |
|
$ttype='System'; |
|
$twhere='system wide'; |
|
} |
} |
|
} |
$r->print('<tr bgcolor='.$tbg.'>'); |
if ($timezone eq 'local') { |
unless ($nochoose) { |
$timezone = undef; |
if ($tstatus eq 'is') { |
} |
$r->print('<td><input type=submit value=Select name="'. |
} |
$trolecode.'"></td>'); |
return $timezone; |
} else { |
} |
$r->print('<td> </td>'); |
|
|
sub roletable_headers { |
|
my ($r,$roleclass,$sortrole,$nochoose) = @_; |
|
my $doheaders; |
|
if ((ref($sortrole) eq 'HASH') && (ref($roleclass) eq 'HASH')) { |
|
$r->print('<br />' |
|
.&Apache::loncommon::start_data_table() |
|
.&Apache::loncommon::start_data_table_header_row() |
|
); |
|
if (!$nochoose) { $r->print('<th> </th>'); } |
|
$r->print('<th>'.&mt('User Role').'</th>' |
|
.'<th>'.&mt('Extent').'</th>' |
|
.'<th>'.&mt('Start').'</th>' |
|
.'<th>'.&mt('End').'</th>' |
|
.&Apache::loncommon::end_data_table_header_row() |
|
); |
|
$doheaders=-1; |
|
my @roletypes = &roletypes(); |
|
foreach my $type (@roletypes) { |
|
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++; } |
|
} |
|
} |
|
return $doheaders; |
|
} |
|
|
|
sub roletypes { |
|
my @types = ('Domain','Construction Space','Course','Unavailable','System'); |
|
return @types; |
|
} |
|
|
|
sub print_rolerows { |
|
my ($r,$doheaders,$roleclass,$sortrole,$dcroles,$roletext) = @_; |
|
if ((ref($roleclass) eq 'HASH') && (ref($sortrole) eq 'HASH')) { |
|
my @types = &roletypes(); |
|
foreach my $type (@types) { |
|
my $output; |
|
foreach my $which (sort {uc($a) cmp uc($b)} (keys(%{$sortrole}))) { |
|
if ($roleclass->{$sortrole->{$which}} =~ /^\Q$type\E/) { |
|
if (ref($roletext) eq 'HASH') { |
|
$output.=$roletext->{$sortrole->{$which}}; |
|
if ($sortrole->{$which} =~ m-dc\./($match_domain)/-) { |
|
if (ref($dcroles) eq 'HASH') { |
|
if ($dcroles->{$1}) { |
|
$output .= &adhoc_roles_row($1,''); |
|
} |
|
} |
|
} |
|
} |
|
} |
|
} |
|
if ($output) { |
|
if ($doheaders > 0) { |
|
$r->print(&Apache::loncommon::start_data_table_empty_row() |
|
.'<td align="center" colspan="5">' |
|
.&mt($type) |
|
.'</td>' |
|
.&Apache::loncommon::end_data_table_empty_row() |
|
); |
} |
} |
|
$r->print($output); |
} |
} |
$r->print('<td>'.$trole.'</td><td>'. |
|
$ttype.'</td><td>'.$twhere.'</td><td>'.$tpstart. |
|
'</td><td>'.$tpend. |
|
'</td><td>'.$tremark.' </td></tr>'."\n"); |
|
} |
} |
} |
} |
|
} |
|
|
|
sub findcourse_advice { |
|
my ($r) = @_; |
|
my $domdesc = &Apache::lonnet::domain($env{'user.domain'},'description'); |
|
my $esc_dom = &HTML::Entities::encode($env{'user.domain'},'"<>&'); |
|
if (&Apache::lonnet::auto_run(undef,$env{'user.domain'})) { |
|
$r->print(&mt('If you were expecting to see an active role listed for a particular course in the [_1] domain, it may be missing for one of the following reasons:',$domdesc).' |
|
<ul> |
|
<li>'.&mt('The course has yet to be created.').'</li> |
|
<li>'.&mt('Automatic enrollment of registered students has not been enabled for the course.').'</li> |
|
<li>'.&mt('You are in a section of course for which automatic enrollment in the corresponding LON-CAPA course is not active.').'</li> |
|
<li>'.&mt('The start date for automated enrollment has yet to be reached.').'</li> |
|
<li>'.&mt('You registered for the course recently and there is a time lag between the time you register, and the time this information becomes available for the update of LON-CAPA course rosters.').'</li> |
|
</ul>'); |
|
} else { |
|
$r->print(&mt('If you were expecting to see an active role listed for a particular course, that course may not have been created yet.').'<br />'); |
|
} |
|
$r->print('<p>'.&mt('The [_1]Course Catalog[_2] provides information about all [_3] classes for which LON-CAPA courses have been created.','<a href="/adm/coursecatalog?showdom='.$esc_dom.'">','</a>',$domdesc).'<br />'); |
|
$r->print(&mt('You can search the course catalog for courses which permit self-enrollment, if you would like to enroll in a course.').'</p>'); |
|
&queued_selfenrollment($r); |
|
return; |
|
} |
|
|
|
sub queued_selfenrollment { |
|
my ($r) = @_; |
|
my %selfenrollrequests = &Apache::lonnet::dump('selfenrollrequests'); |
|
my %reqs_by_date; |
|
foreach my $item (keys(%selfenrollrequests)) { |
|
if (ref($selfenrollrequests{$item}) eq 'HASH') { |
|
if ($selfenrollrequests{$item}{'status'} eq 'request') { |
|
if ($selfenrollrequests{$item}{'timestamp'}) { |
|
push(@{$reqs_by_date{$selfenrollrequests{$item}{'timestamp'}}},$item); |
|
} |
|
} |
|
} |
|
} |
|
if (keys(%reqs_by_date)) { |
|
my $rolename = &Apache::lonnet::plaintext('st'); |
|
$r->print('<b>'.&mt('Enrollment requests pending Course Coordinator approval').'</b><br />'. |
|
&Apache::loncommon::start_data_table(). |
|
&Apache::loncommon::start_data_table_header_row(). |
|
'<th>'.&mt('Date requested').'</th><th>'.&mt('Course title').'</th>'. |
|
'<th>'.&mt('User role').'</th><th>'.&mt('Section').'</th>'. |
|
&Apache::loncommon::end_data_table_header_row()); |
|
my @sorted = sort { $a <=> $b } (keys(%reqs_by_date)); |
|
foreach my $item (@sorted) { |
|
if (ref($reqs_by_date{$item}) eq 'ARRAY') { |
|
foreach my $crs (@{$reqs_by_date{$item}}) { |
|
my %courseinfo = &Apache::lonnet::coursedescription($crs); |
|
my $usec = $selfenrollrequests{$crs}{'section'}; |
|
if ($usec eq '') { |
|
$usec = &mt('No section'); |
|
} |
|
$r->print(&Apache::loncommon::start_data_table_row(). |
|
'<td>'.&Apache::lonlocal::locallocaltime($item).'</td>'. |
|
'<td>'.$courseinfo{'description'}.'</td>'. |
|
'<td>'.$rolename.'</td><td>'.$usec.'</td>'. |
|
&Apache::loncommon::end_data_table_row()); |
|
} |
|
} |
|
} |
|
$r->print(&Apache::loncommon::end_data_table()); |
|
} |
|
return; |
|
} |
|
|
|
sub privileges_info { |
|
my ($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='/'; |
|
} |
|
$output .= "\n<h3>".&mt($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 $output; |
|
} |
|
|
|
sub build_roletext { |
|
my ($trolecode,$tdom,$trest,$tstatus,$tryagain,$advanced,$tremark,$tbg,$trole,$twhere,$tpstart,$tpend,$nochoose,$button,$switchserver,$reinit) = @_; |
|
my $roletext=&Apache::loncommon::start_data_table_row(); |
|
my $is_dc=($trolecode =~ m/^dc\./); |
|
my $rowspan=($is_dc) ? '' |
|
: ' rowspan="2" '; |
|
|
$r->print('</table>'); |
|
unless ($nochoose) { |
unless ($nochoose) { |
$r->print("</form>\n"); |
my $buttonname=$trolecode; |
|
$buttonname=~s/\W//g; |
|
if (!$button) { |
|
if ($switchserver) { |
|
$roletext.='<td'.$rowspan.' class="'.$tbg.'">' |
|
.'<a href="/adm/switchserver?'.$switchserver.'">' |
|
.&mt('Switch Server') |
|
.'</a></td>'; |
|
} else { |
|
$roletext.=('<td'.$rowspan.' class="'.$tbg.'"> </td>'); |
|
} |
|
} elsif ($tstatus eq 'is') { |
|
$roletext.='<td'.$rowspan.' class="'.$tbg.'">'. |
|
'<input name="'.$buttonname.'" type="button" value="'. |
|
&mt('Select').'" onClick="javascript:enterrole(this.form,\''. |
|
$trolecode."','".$buttonname.'\');" /></td>'; |
|
} elsif ($tryagain) { |
|
$roletext.= |
|
'<td'.$rowspan.' class="'.$tbg.'">'. |
|
'<input name="'.$buttonname.'" type="button" value="'. |
|
&mt('Try Selecting Again').'" onClick="javascript:enterrole(this.form,\''. |
|
$trolecode."','".$buttonname.'\');" /></td>'; |
|
} elsif ($advanced) { |
|
$roletext.= |
|
'<td'.$rowspan.' class="'.$tbg.'">'. |
|
'<input name="'.$buttonname.'" type="button" value="'. |
|
&mt('Re-Initialize').'" onClick="javascript:enterrole(this.form,\''. |
|
$trolecode."','".$buttonname.'\');" /></td>'; |
|
} elsif ($reinit) { |
|
$roletext.= |
|
'<td'.$rowspan.' class="'.$tbg.'">'. |
|
'<input name="'.$buttonname.'" type="button" value="'. |
|
&mt('Re-Select').'" onClick="javascript:enterrole(this.form,\''. |
|
$trolecode."','".$buttonname.'\');" /></td>'; |
|
} else { |
|
$roletext.= |
|
'<td'.$rowspan.' class="'.$tbg.'">'. |
|
'<input name="'.$buttonname.'" type="button" value="'. |
|
&mt('Re-Initialize').'" onClick="javascript:enterrole(this.form,\''. |
|
$trolecode."','".$buttonname.'\');" /></td>'; |
|
} |
} |
} |
# ------------------------------------------------------------ Priviledges Info |
if ($trolecode !~ m/^(dc|ca|au|aa)\./) { |
if ($advanced) { |
$tremark.=&Apache::lonannounce::showday(time,1, |
$r->print('<hr><h2>Priviledges</h2>'); |
&Apache::lonannounce::readcalendar($tdom.'_'.$trest)); |
|
} |
foreach $envkey (sort keys %ENV) { |
$roletext.='<td>'.$trole.'</td>' |
if ($envkey=~/^user\.priv\./) { |
.'<td>'.$twhere.'</td>' |
my ($dum1,$dum2,@pwhere)=split(/\./,$envkey); |
.'<td>'.$tpstart.'</td>' |
my $where=join('.',@pwhere); |
.'<td>'.$tpend.'</td>' |
my $ttype; |
.&Apache::loncommon::end_data_table_row(); |
|
if (!$is_dc) { |
|
$roletext.=&Apache::loncommon::continue_data_table_row() |
|
.'<td colspan="4">' |
|
.$tremark.' ' |
|
.'</td>' |
|
.&Apache::loncommon::end_data_table_row(); |
|
} |
|
return $roletext; |
|
} |
|
|
|
sub check_needs_switchserver { |
|
my ($possiblerole) = @_; |
|
my $needs_switchserver; |
|
my ($role,$where) = split(/\./,$possiblerole,2); |
|
my (undef,$tdom,$twho) = split(/\//,$where); |
|
my ($server_status,$home); |
|
if (($role eq 'ca') || ($role eq 'aa')) { |
|
($server_status,$home) = &check_author_homeserver($twho,$tdom); |
|
} else { |
|
($server_status,$home) = &check_author_homeserver($env{'user.name'}, |
|
$env{'user.domain'}); |
|
} |
|
if ($server_status eq 'switchserver') { |
|
$needs_switchserver = 1; |
|
} |
|
return $needs_switchserver; |
|
} |
|
|
|
sub check_author_homeserver { |
|
my ($uname,$udom)=@_; |
|
if (($uname eq '') || ($udom eq '')) { |
|
return ('fail',''); |
|
} |
|
my $home = &Apache::lonnet::homeserver($uname,$udom); |
|
if (&Apache::lonnet::host_domain($home) ne $udom) { |
|
return ('fail',$home); |
|
} |
|
my @ids=&Apache::lonnet::current_machine_ids(); |
|
if (grep(/^\Q$home\E$/,@ids)) { |
|
return ('ok',$home); |
|
} else { |
|
return ('switchserver',$home); |
|
} |
|
} |
|
|
|
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 $numdc; |
|
} |
|
|
|
sub adhoc_course_role { |
|
my ($then) = @_; |
|
my ($cdom,$cnum); |
|
$cdom = $env{'course.'.$env{'request.course.id'}.'.domain'}; |
|
$cnum = $env{'course.'.$env{'request.course.id'}.'.num'}; |
|
if (&check_forcc($cdom,$cnum,$then)) { |
|
my $setprivs; |
|
if (!defined($env{'user.role.'.$env{'form.switchrole'}})) { |
|
$setprivs = 1; |
|
} else { |
|
my ($start,$end) = split(/\./,$env{'user.role.'.$env{'form.switchrole'}}); |
|
if (($start && ($start>$then || $start == -1)) || |
|
($end && $end<$then)) { |
|
$setprivs = 1; |
|
} |
|
} |
|
if ($setprivs) { |
|
if ($env{'form.switchrole'} =~ m-^(in|ta|ep|ad|st|cr)([\w/]*)\./\Q$cdom\E/\Q$cnum\E/?(\w*)$-) { |
|
my $role = $1; |
|
my $custom_role = $2; |
|
my $usec = $3; |
|
if ($role eq 'cr') { |
|
if ($custom_role =~ m-^/$match_domain/$match_username/\w+$-) { |
|
$role .= $custom_role; |
|
} else { |
|
return; |
|
} |
|
} |
|
my (%userroles,%newrole,%newgroups,%group_privs); |
|
my %cgroups = |
|
&Apache::lonnet::get_active_groups($env{'user.domain'}, |
|
$env{'user.name'},$cdom,$cnum); |
|
foreach my $group (keys(%cgroups)) { |
|
$group_privs{$group} = |
|
$env{'user.priv.cc./'.$cdom.'/'.$cnum.'./'.$cdom.'/'.$cnum.'/'.$group}; |
|
} |
|
$newgroups{'/'.$cdom.'/'.$cnum} = \%group_privs; |
|
my $area = '/'.$cdom.'/'.$cnum; |
|
my $spec = $role.'.'.$area; |
|
if ($usec ne '') { |
|
$spec .= '/'.$usec; |
|
$area .= '/'.$usec; |
|
} |
|
&Apache::lonnet::standard_roleprivs(\%newrole,$role,$cdom,$spec,$cnum,$area); |
|
&Apache::lonnet::set_userprivs(\%userroles,\%newrole,\%newgroups); |
|
my $adhocstart = $then-1; |
|
$userroles{'user.role.'.$spec} = $adhocstart.'.'; |
|
&Apache::lonnet::appenv(\%userroles,[$role,'cm']); |
|
} |
|
} |
|
} |
|
return; |
|
} |
|
|
|
sub check_forcc { |
|
my ($cdom,$cnum,$then) = @_; |
|
my $is_cc; |
|
if ($cdom ne '' && $cnum ne '') { |
|
if (&Apache::lonnet::is_course($cdom,$cnum)) { |
|
my $envkey = 'user.role.cc./'.$cdom.'/'.$cnum; |
|
if (defined($env{$envkey})) { |
|
$is_cc = 1; |
|
my ($tstart,$tend)=split(/\./,$env{$envkey}); |
|
if ($tstart && $tstart>$then) { $is_cc = 0; } |
|
if ($tend && $tend <$then) { $is_cc = 0; } |
|
} |
|
} |
|
} |
|
return $is_cc; |
|
} |
|
|
|
sub courselink { |
|
my ($dcdom,$rowtype) = @_; |
|
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 %lt = &Apache::lonlocal::texthash( |
|
plsu => "Please use the 'Select Course' link to open a separate pick course window where you may select the course you wish to enter.", |
|
youc => 'You can only use this screen to select courses in the current domain.', |
|
); |
|
my $verify_script = <<"END"; |
|
<script type="text/javascript"> |
|
function verifyCoursePick(caller) { |
|
var numbutton = getIndex(caller) |
|
var pickedCourse = document.rolechoice.elements[numbutton+4].value |
|
var pickedDomain = document.rolechoice.elements[numbutton+2].value |
|
if (document.rolechoice.elements[numbutton+2].value == document.rolechoice.elements[numbutton+3].value) { |
|
if (pickedCourse != '') { |
|
if (numbutton != -1) { |
|
var courseTarget = "cc./"+pickedDomain+"/"+pickedCourse |
|
document.rolechoice.elements[numbutton+1].name = courseTarget |
|
document.rolechoice.submit() |
|
} |
|
} |
|
else { |
|
alert("$lt{'plsu'}"); |
|
} |
|
} |
|
else { |
|
alert("$lt{'youc'}") |
|
} |
|
} |
|
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 $verify_script; |
|
} |
|
|
|
sub coauthorlink { |
|
my ($dcdom,$rowtype) = @_; |
|
my $coauthorform=&Apache::loncommon::selectauthor_link('rolechoice',$dcdom); |
|
my $hiddenitems = '<input type="hidden" name="adhoccauname'.$rowtype.'_'.$dcdom.'" value="" />'; |
|
return $coauthorform.$hiddenitems; |
|
} |
|
|
|
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 $twhere; |
my ($tdom,$trest)= |
my $ttype; |
split(/\//,Apache::lonnet::declutter($where)); |
my $tbg='LC_roles_is'; |
if ($trest) { |
my %newhash=&Apache::lonnet::coursedescription($tcourseid); |
$ttype='Course'; |
if (%newhash) { |
$twhere=$cdes{$tdom.'/'.$trest}; |
$twhere=$newhash{'description'}. |
} elsif ($tdom) { |
' <span style="LC_fontsize_small">'. |
$ttype='Domain'; |
&Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$2,$1). |
$twhere=$tdom; |
'</span>'; |
|
$ttype = $newhash{'type'}; |
} else { |
} else { |
$ttype='System'; |
$twhere=&mt('Currently not available'); |
$twhere='/'; |
$env{'course.'.$tcourseid.'.description'}=$twhere; |
} |
} |
$r->print("\n<h3>".$ttype.': '.$twhere.'</h3><ul>'); |
my $trole = &Apache::lonnet::plaintext('cc',$ttype); |
map { |
$twhere.="<br />".&mt('Domain').":".$1; |
if ($_) { |
$roletext = &build_roletext($trolecode,$1,$2,'is',$tryagain,$advanced,'',$tbg,$trole,$twhere,'','','',1,''); |
my ($prv,$restr)=split(/\&/,$_); |
} |
my $trestr=''; |
|
if ($restr ne 'F') { |
|
my $i; |
|
$trestr.=' ('; |
|
for ($i=0;$i<length($restr);$i++) { |
|
$trestr.= |
|
Apache::lonnet::plaintext(substr($restr,$i,1)); |
|
if ($i<length($restr)-1) { $trestr.=', '; } |
|
} |
|
$trestr.=')'; |
|
} |
|
$r->print('<li>'.Apache::lonnet::plaintext($prv).$trestr. |
|
'</li>'); |
|
} |
|
} sort split(/:/,$ENV{$envkey}); |
|
$r->print('</ul>'); |
|
} |
|
} |
|
} |
|
# -------------------------------------------------------------- Debug - remove |
|
|
|
$->print("<hr><h1>Debugging</h1><hr>\n"); |
|
|
|
foreach $envkey (sort keys %ENV) { |
|
$r->print("$envkey ---- $ENV{$envkey}<br>"); |
|
} |
} |
|
return ($roletext); |
|
} |
|
|
# ------------------------------------------------------------------- End Debug |
sub adhoc_roles_row { |
|
my ($dcdom,$rowtype) = @_; |
$r->print("</body></html>\n"); |
my $output = &Apache::loncommon::continue_data_table_row() |
return OK; |
.' <td colspan="5">' |
} |
.'<table><tr><td>' |
|
.&mt('[_1]Ad hoc[_2] roles in domain [_3] --' |
|
,'<span class="LC_cusr_emph">','</span>',$dcdom) |
|
.'</td>' |
|
.'<td>'; |
|
my $selectcclink = &courselink($dcdom,$rowtype); |
|
my $ccrole = &Apache::lonnet::plaintext('cc'); |
|
my $carole = &Apache::lonnet::plaintext('ca'); |
|
my $selectcalink = &coauthorlink($dcdom,$rowtype); |
|
$output.=&mt('[_1]: [_2]',$ccrole,$selectcclink) |
|
.'<br /></td>' |
|
.'<td> </td>' |
|
.'<td>'.&mt('[_1]: [_2]',$carole,$selectcalink).'<br /></td>' |
|
.'</tr></table>' |
|
.'</td>' |
|
.&Apache::loncommon::end_data_table_row(); |
|
return $output; |
|
} |
|
|
|
sub recent_filename { |
|
my $area=shift; |
|
return 'nohist_recent_'.&escape($area); |
|
} |
|
|
|
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; |
1; |
__END__ |
__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 |