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File: [LON-CAPA] / loncom / publisher / lonrights.pm
Revision 1.17: download - view: text, annotated - select for diffs
Thu Apr 7 06:56:27 2005 UTC (19 years, 2 months ago) by albertel
Branches: MAIN
CVS tags: version_2_1_X, version_2_1_3, version_2_1_2, version_2_1_1, version_2_1_0, version_2_0_X, version_2_0_99_1, version_2_0_2, version_2_0_1, version_2_0_0, version_1_99_3, version_1_99_2, version_1_99_1_tmcc, version_1_99_1, version_1_99_0_tmcc, version_1_99_0, HEAD

- ENV -> env

# The LearningOnline Network with CAPA
# Handler to show and edit custom distribution rights
#
# $Id: lonrights.pm,v 1.17 2005/04/07 06:56:27 albertel 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::lonrights;

use strict;
use Apache::Constants qw(:common :http);
use Apache::lonnet;
use Apache::loncommon();
use HTML::LCParser;
use Apache::File;
use Apache::lonlocal;

sub handler {

  my $r=shift;
  my $target = $env{'form.grade_target'};
  if ($target eq 'meta') {
      &Apache::loncommon::content_type($r,'text/html');
      $r->send_http_header;
      $env{'request.uri'}=$r->uri;
      my $file = &Apache::lonnet::filelocation("",$r->uri);
      my $content=&Apache::lonnet::getfile($file);
      my $result=&Apache::lonxml::xmlparse(undef,'meta',$content);
      $r->print($result);
      return OK;
  }
  &Apache::loncommon::content_type($r,'text/html');
  $r->send_http_header;

  $r->print(
     '<html><head><title>LON-CAPA Custom Distribution Rights</title>'.
   &Apache::loncommon::coursebrowser_javascript().'</head>');

  $r->print(&Apache::loncommon::bodytag('Custom Distribution Rights'));
  $r->rflush();

  my $uri=$r->uri;
  my $fn=&Apache::lonnet::filelocation('',$uri);
  my $contents='';
  my $constructmode=($uri=~/^\/\~/);

# ============================================================ Modify and store
  if ($constructmode) {
      if ($env{'form.store'}) {
	  my @newrules=();
          undef @newrules;
# read rules from form
          foreach (keys %env) {
	      if ($_=~/^form\.effect\_(\d+)$/) {
		  my $number=$1;
                  my %rulehash=();
                  foreach ('effect','domain','course','section','role') {
		      $rulehash{$_}=$env{'form.'.$_.'_'.$number};
                  }
                  if ($rulehash{'role'} eq 'au') {
		      $rulehash{'course'}='';
                      $rulehash{'section'}='';
                  }
                  if ($rulehash{'role'} eq 'cc') {
                      $rulehash{'section'}='';
                  }
                  unless (($rulehash{'effect'} eq 'deny') ||
		          ($rulehash{'effect'} eq 'allow')) {
		      $rulehash{'effect'}='deny';
                  }
                  $rulehash{'domain'}=~s/\W//g;
                  $rulehash{'course'}=~s/\W//g;
                  $rulehash{'section'}=~s/\W//g;
                  unless ($rulehash{'domain'}) { 
                     $rulehash{'domain'}=$env{'user.domain'}; 
                  }
                  my $realm='';
                  if ($number) {
                     $realm=$rulehash{'domain'};
                     if ($rulehash{'course'}) {
			 $realm.='_'.$rulehash{'course'};
                     }
                     if ($rulehash{'section'}) {
			 $realm.='_'.$rulehash{'section'};
                     }
		 }
		  $newrules[$number]=$rulehash{'effect'}.':'.
		                     $realm.':'.$rulehash{'role'};
              }
          }
# edit actions?
          foreach (keys %env) {
	      if ($_=~/^form\.action\_(\d+)$/) {
                  my $number=$1;
		  if ($env{$_} eq 'delete') { $newrules[$number]=''; }
                  if (($env{$_} eq 'moveup') && ($number>1)) {
		      my $buffer=$newrules[$number];
                      $newrules[$number]=$newrules[$number-1];
                      $newrules[$number-1]=$buffer;
                  }
                  if (($env{$_} eq 'movedown') && ($number<$#newrules)) {
		      my $buffer=$newrules[$number];
                      $newrules[$number]=$newrules[$number+1];
                      $newrules[$number+1]=$buffer;
                  }
                  if ($env{$_} eq 'insertabove') {
		      for (my $i=$#newrules;$i>=$number;$i--) {
			  $newrules[$i+1]=$newrules[$i];
                      }
                      $newrules[$number]='deny';
                  }
                  if ($env{$_} eq 'insertbelow') {
 		      for (my $i=$#newrules;$i>$number;$i--) {
			  $newrules[$i+1]=$newrules[$i];
                      }
                      $newrules[$number+1]='deny';
                 }
	      }
          }

# store file
          my $fh=Apache::File->new('>'.$fn);
          foreach (my $i=0;$i<=$#newrules;$i++) {
              if ($newrules[$i]) {
	         my ($effect,$realm,$role)=split(/\:/,$newrules[$i]);
                 print $fh
	       "<accessrule effect='$effect' realm='$realm' role='$role' />\n";
	     }
          }
          $fh->close;
      }
  }
# ============================================================ Read and display
  unless ($constructmode) { 
# =========================================== This is not in construction space
      $contents=&Apache::lonnet::getfile($fn);
      if ($contents==-1) { $contents=''; }
  } else {
# =============================================== This is in construction space
      if (-e $fn) {
	  my $fh=Apache::File->new($fn);
          $contents=join('',<$fh>);
          $fh->close();
      }
      $r->print('<form name="rules" method="post">');
  }
  unless ($contents=~/\<accessrule/s) {
      $contents='<accessrule effect="deny" />';
  }
  my $parser=HTML::LCParser->new(\$contents);
  my $token;
  my $rulecounter=0;
  my $colzero=&mt($constructmode?'Edit action':'Rule');
  my %lt=&Apache::lonlocal::texthash('ef' => 'Effect',
				     'do' => 'Domain',
				     'co' => 'Course',
				     'se' => 'Section/Group',
				     'ro' => 'Role');
# ---------------------------------------------------------- Start table output
  $r->print(<<ENDSTARTTABLE);
<table border="2">
    <tr><th>$colzero</th><th>$lt{'ef'}</th><th>$lt{'do'}</th><th>$lt{'co'}</th>
<th>$lt{'se'}</th><th>$lt{'ro'}</th></tr>
ENDSTARTTABLE
# --------------------------------------------------------------------- Default
# Fast forward to first rule
  $token=$parser->get_token;
  while ($token->[1] ne 'accessrule') { $token=$parser->get_token; }
# print default
  $r->print('<tr><td align="right">');
  if ($constructmode) {
     $r->print(&Apache::loncommon::select_form('','action_0',
                                  ('' => '',
				   'insertbelow' => 'Insert rule below    ')));
                                                
  } else {
      $r->print('&nbsp;');
  }
  $r->print('</td><td>');
  if ($constructmode) {
      $r->print(&Apache::loncommon::select_form
                                 ($token->[2]->{'effect'},'effect_0',
                                   ('allow' => 'allow',
                                    'deny'  => 'deny')));
  } else {
      $r->print($token->[2]->{'effect'});
  }
  $r->print('</td><td colspan="4">Default');
  if (($token->[2]->{'realm'}) || ($token->[2]->{'role'})) {
      $r->print(' - <font color="red">'.&mt('Error! No default set.').
		'</font>');
  }
  $r->print('</td></tr>');
# Additional roles
  while ($token=$parser->get_token) {
      if (($token->[0] eq 'S') && ($token->[1] eq 'accessrule')) {
          $rulecounter++;
	  $r->print('<tr><td align="right" rowspan="2">');
# insert, delete, etc
	  $r->print($rulecounter.'.&nbsp;');
          if ($constructmode) {
             $r->print(&Apache::loncommon::select_form(
                    '','action_'.$rulecounter,
                    ('' => '', 
                     'delete' => 'Delete this rule',
                     'insertabove' => 'Insert rule above',
                     'insertbelow' => 'Insert rule below    ',
                     'moveup'      => 'Move rule up',
                     'movedown'    => 'Move rule down')));
	  }
          $r->print('</td><td rowspan="2">');
# effect
          if ($constructmode) {
             $r->print(&Apache::loncommon::select_form
                                 ($token->[2]->{'effect'},
                                  'effect_'.$rulecounter,
                                   ('allow' => 'allow',
                                    'deny'  => 'deny')));
          } else {
             $r->print($token->[2]->{'effect'});
          }
	  $r->print('</td><td>');
# ---- realm
          my $realm=$token->[2]->{'realm'};
          $realm=~s/^\W//;
          my ($rdom,$rcourse,$rsec)=split(/[\/\_]/,$realm);
# realm domain
          if ($constructmode) {
              unless ($rdom) { $rdom=$env{'user.domain'}; }
              $r->print(&Apache::loncommon::select_dom_form($rdom,
                                                      'domain_'.$rulecounter));
          } else {
              $r->print($rdom);
          }
          $r->print('</td><td>');
# realm course
          if ($constructmode) {
             $r->print('<input input type="text" size="25" name="course_'.
                       $rulecounter.'" value="'.$rcourse.'" />');
          } else {
              $r->print($rcourse);
          }

          $r->print('</td><td>');
# realm section
          if ($constructmode) {
             $r->print('<input input type="text" size="5" name="section_'.
                       $rulecounter.'" value="'.$rsec.'" />');
          } else {
              $r->print($rsec);
          }

          $r->print('</td><td rowspan="2">');
# role
          if ($constructmode) {
	      my %hash=('' => '');
              foreach ('au','cc','in','ta','st') { 
                 $hash{$_}=&Apache::lonnet::plaintext($_); 
              }
              my $role=$token->[2]->{'role'};
              unless ($role) { $role=''; }
              $r->print(&Apache::loncommon::select_form(
                $role,'role_'.$rulecounter,%hash));
          } else {
              $r->print(&Apache::lonnet::plaintext($token->[2]->{'role'}));
          }
# course selection link
          $r->print('</td></tr><tr><td colspan="3" align="right">');
          if ($rcourse) {
	      my %descript=
                 &Apache::lonnet::coursedescription($rdom.'_'.$rcourse);
              $r->print($descript{'description'}.'&nbsp;&nbsp;&nbsp;');
          }
	  if ($constructmode) {
	      $r->print(&Apache::loncommon::selectcourse_link('rules',
		        'course_'.$rulecounter,'domain_'.$rulecounter));
	  }
# close row
          $r->print('</td></tr>');
     }                                       
  }
  $r->print('</table>');
# ------------------------------------------------------------ End table output
  if ($constructmode) { 
     $r->print('<input type="submit" name="store" value="'.&mt('Store').'" /></form>'); 
  }
  $r->print('</body></html>');
  return OK;  
}


1;
__END__

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