[BACK]Return to lonroles.pm CVS log [TXT] [DIR] Up to [LON-CAPA] / loncom / auth

Diff for /loncom/auth/lonroles.pm between versions 1.57 and 1.67

version 1.57, 2003/05/21 20:10:53 version 1.67, 2003/09/11 20:03:28
Line 52  use Apache::lonmenu; Line 52  use Apache::lonmenu;
 use Apache::loncommon;  use Apache::loncommon;
 use Apache::lonannounce;  use Apache::lonannounce;
   
   sub redirect_user {
       my ($r,$title,$url,$msg) = @_;
       $msg = $title if (! defined($msg));
       $r->content_type('text/html');
       &Apache::loncommon::no_cache($r);
       $r->send_http_header;
       my $swinfo=&Apache::lonmenu::rawconfig();
       my $bodytag=&Apache::loncommon::bodytag('Switching Role');
       $r->print (<<ENDREDIR);
   <head><title>$title</title>
   <meta HTTP-EQUIV="Refresh" CONTENT="1; url=$url">
   </head>
   <html>
   $bodytag
   <script>
   $swinfo
   </script>
   <h1>$msg</h1>
   </body>
   </html>
   ENDREDIR
       return;
   }
   
 sub handler {  sub handler {
   
     my $r = shift;      my $r = shift;
Line 141  ENDENTERKEY Line 165  ENDENTERKEY
    'request.role.domain' => $cdom,     'request.role.domain' => $cdom,
    'request.course.sec'  => $csec);     'request.course.sec'  => $csec);
     my $msg='Entering course ...';      my $msg='Entering course ...';
   
     if (($cnum) && ($role ne 'ca')) {      if (($cnum) && ($role ne 'ca')) {
  my ($furl,$ferr)=   my ($furl,$ferr)=
     &Apache::lonuserstate::readmap($cdom.'/'.$cnum);      &Apache::lonuserstate::readmap($cdom.'/'.$cnum);
  if (($ENV{'form.orgurl'}) &&    if (($ENV{'form.orgurl'}) && 
     ($ENV{'form.orgurl'}!~/^\/adm\/flip/)) {      ($ENV{'form.orgurl'}!~/^\/adm\/flip/)) {
     $r->internal_redirect($ENV{'form.orgurl'});      my $dest=$ENV{'form.orgurl'};
       if ( Apache::exists_config_define("MODPERL2") ) {
    &Apache::lonnet::cleanenv();
       }
       $r->internal_redirect($dest);
     return OK;      return OK;
  } else {   } else {
     unless ($ENV{'request.course.id'}) {      unless ($ENV{'request.course.id'}) {
  &Apache::lonnet::appenv(   &Apache::lonnet::appenv(
       "request.course.id"  => $cdom.'_'.$cnum);        "request.course.id"  => $cdom.'_'.$cnum);
  $furl='/adm/notfound.html';   $furl='/adm/roles?tryagain=1';
  $msg=   $msg=
  '<h1><font color=red>Could not initialize top-level map.</font></h1>';   '<h1><font color=red>Could not initialize course at this time.</font></h1><h3>Please try again.</h3>'.$ferr;
     }      }
     $r->content_type('text/html');  
     &Apache::loncommon::no_cache($r);      # Check to see if the user is a CC entering a course 
     $r->send_http_header;      # for the first time
     my $swinfo=&Apache::lonmenu::rawconfig();      my (undef, undef, $role, $courseid) = split(/\./, $envkey);
     my $bodytag=&Apache::loncommon::bodytag('Switching Role');      if (substr($courseid, 0, 1) eq '/') {
     print (<<ENDREDIR);   $courseid = substr($courseid, 1);
 <head><title>Entering Course</title>      }
 <meta HTTP-EQUIV="Refresh" CONTENT="1; url=$furl">      $courseid =~ s/\//_/;
 </head>      if ($role eq 'cc' && $ENV{'course.' . $courseid . 
 <html>    '.course.helper.not.run'}) {
 $bodytag   $furl = "/adm/helper/course.initialization.helper";
 <script>      }
 $swinfo                              #
 </script>                              # Send the user to the course they selected
 <h1>$msg</h1>                              &redirect_user($r,'Entering Course',
 </body>                                             $furl,$msg);
 </html>  
 ENDREDIR  
                             return OK;                              return OK;
  }   }
     }      }
                       #
                       # Send the user to the construction space they selected
                       if ($role =~ /^(au|ca)$/) {
                           my $redirect_url = '/priv/';
                           if ($role eq 'au') {
                               $redirect_url.=$ENV{'user.name'};
                           } else {
                               $where =~ /\/(.*)$/;
                               $redirect_url .= $1;
                           }
                           $redirect_url .= '/';
                           &redirect_user($r,'Entering Construction Space',
                                          $redirect_url);
                           return OK;
                       }
  }   }
             }              }
         }          }
Line 215  ENDHEADER Line 257  ENDHEADER
    "$msg for $ENV{'user.name'} domain $ENV{'user.domain'} access $priv",$fn);     "$msg for $ENV{'user.name'} domain $ENV{'user.domain'} access $priv",$fn);
     }      }
   
 # ---------------------------------------------------------------- Who is this?  # ------------------------------------------------- Can this user re-init, etc?
   
     my $advanced=0;      my $advanced=$ENV{'user.adv'};
     foreach $envkey (keys %ENV) {      &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['tryagain']);
         if ($envkey=~/^user\.role\./) {      my $tryagain=$ENV{'form.tryagain'};
     my (undef,undef,$role,@pwhere)=split(/\./,$envkey);  
             if ($role ne 'st') { $advanced=1; }  
         }  
     }  
   
 # -------------------------------------------------------- Generate Page Output  # -------------------------------------------------------- Generate Page Output
 # --------------------------------------------------------------- Error Header?  # --------------------------------------------------------------- Error Header?
Line 263  ENDHEADER Line 301  ENDHEADER
     $r->print("Author and Co-Author roles may not be available on ".      $r->print("Author and Co-Author roles may not be available on ".
       "servers other than your home server.");        "servers other than your home server.");
         } else {          } else {
     $r->print("<h2>Enter a Course</h2>\n");      $r->print("<h2>Select a Course to Enter</h2>\n");
         }          }
         if (($ENV{'REDIRECT_QUERY_STRING'}) && ($fn)) {          if (($ENV{'REDIRECT_QUERY_STRING'}) && ($fn)) {
        $fn.='?'.$ENV{'REDIRECT_QUERY_STRING'};         $fn.='?'.$ENV{'REDIRECT_QUERY_STRING'};
Line 272  ENDHEADER Line 310  ENDHEADER
         $r->print('<input type=hidden name=orgurl value="'.$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>');
     }      }
     $r->print('<br>Show all roles: <input type=checkbox name=showall');      if ($ENV{'user.adv'}) {
     if ($ENV{'form.showall'}) { $r->print(' checked'); }   $r->print(
     $r->print('><input type=submit value="Display"><br>');        '<br />Show all roles: <input type="checkbox" name="showall"');
    if ($ENV{'form.showall'}) { $r->print(' checked'); }
    $r->print('><input type=submit value="Display">');
       }
 # ----------------------------------------------------------------------- Table  # ----------------------------------------------------------------------- Table
     $r->print('<table><tr>');      $r->print('<br /><table><tr>');
     unless ($nochoose) { $r->print('<th>&nbsp;</th>'); }      unless ($nochoose) { $r->print('<th>&nbsp;</th>'); }
     $r->print('<th>User Role</th><th colspan=2>Extent</th>'.      $r->print('<th>User Role</th><th colspan=2>Extent</th>'.
       '<th>Start</th><th>End</th><th>Remark</th></tr>'."\n");        '<th>Start</th><th>End</th><th>Remark</th></tr>'."\n");
Line 430  ENDHEADER Line 471  ENDHEADER
                     } elsif ($tstatus eq 'is') {                      } elsif ($tstatus eq 'is') {
                         $r->print('<td><input type=submit value=Select name="'.                          $r->print('<td><input type=submit value=Select name="'.
                                   $trolecode.'"></td>');                                    $trolecode.'"></td>');
                     } elsif ($ENV{'user.adv'}) {                      } elsif ($tryagain) {
                           $r->print
                           ('<td><input type=submit value="Try Selecting Again"'.
                                ' name="'.$trolecode.'"></td>');
                       } elsif ($advanced) {
                         $r->print                          $r->print
                             ('<td><input type=submit value="Re-Initialize"'.                              ('<td><input type=submit value="Re-Initialize"'.
                              ' name="'.$trolecode.'"></td>');                               ' name="'.$trolecode.'"></td>');
Line 529  ENDHEADER Line 574  ENDHEADER
     }      }
  }   }
     }      }
       $r->print(&Apache::lonnet::getannounce());
       if ($advanced) {
    $r->print('<p><small><i>This is LON-CAPA '.
     $r->dir_config('lonVersion').'</i></small></p>');
       }
     $r->print("</body></html>\n");      $r->print("</body></html>\n");
     return OK;      return OK;
 }   } 
Line 553  Invoked by /etc/httpd/conf/srm.conf: Line 602  Invoked by /etc/httpd/conf/srm.conf:
  ErrorDocument  500 /adm/errorhandler   ErrorDocument  500 /adm/errorhandler
  </Location>   </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  =head1 INTRODUCTION
   
 This module enables a user to select what role he wishes to  This module enables a user to select what role he wishes to
Removed from v.1.57  
changed lines
  Added in v.1.67

FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>