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- switch server can now pick a destination server if one isn't specified
- migrate user can redirect to roles screen if no role specified

    1: # The LearningOnline Network
    2: # Switch Servers Handler
    3: #
    4: # $Id: switchserver.pm,v 1.4 2005/10/28 21:51:43 albertel Exp $
    5: #
    6: # Copyright Michigan State University Board of Trustees
    7: #
    8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
    9: #
   10: # LON-CAPA is free software; you can redistribute it and/or modify
   11: # it under the terms of the GNU General Public License as published by
   12: # the Free Software Foundation; either version 2 of the License, or
   13: # (at your option) any later version.
   14: #
   15: # LON-CAPA is distributed in the hope that it will be useful,
   16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
   17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   18: # GNU General Public License for more details.
   19: #
   20: # You should have received a copy of the GNU General Public License
   21: # along with LON-CAPA; if not, write to the Free Software
   22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   23: #
   24: # /home/httpd/html/adm/gpl.txt
   25: #
   26: # http://www.lon-capa.org/
   27: #
   28: 
   29: package Apache::switchserver;
   30: 
   31: use strict;
   32: use Apache::Constants qw(:common);
   33: use Apache::lonnet;
   34: use Apache::lonmenu;
   35: use CGI::Cookie();
   36: use Apache::lonlocal;
   37: 
   38: sub init_env {
   39:     my ($r) = @_;
   40:     my $requrl=$r->uri;
   41:     my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
   42:     my $lonid=$cookies{'lonID'};
   43:     my $cookie;
   44:     if (!$lonid) { return undef; }
   45: 
   46:     my $handle=$lonid->value;
   47:     $handle=~s/\W//g;
   48:     my $lonidsdir=$r->dir_config('lonIDsDir');
   49:     if ((!-e "$lonidsdir/$handle.id") || ($handle eq '')) {
   50: 	$r->log_reason("Cookie $handle not valid", $r->filename); 
   51: 	return undef;
   52:     }
   53: 
   54:     &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
   55:     
   56:     return $handle;
   57: }
   58: 
   59: sub handler {
   60:     my $r = shift;
   61:     
   62:     
   63:     my $handle=&init_env($r);
   64:     if (!defined($handle)) { return FORBIDDEN; }
   65: 
   66:     &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
   67: 					    ['otherserver','role']);
   68:    
   69:     my $switch_to=$Apache::lonnet::hostname{$env{'form.otherserver'}};
   70:     if (!$env{'form.otherserver'}) {
   71: 	$env{'form.otherserver'}=&Apache::lonnet::spareserver(30000,undef,1);
   72: 	$switch_to=$Apache::lonnet::hostname{$env{'form.otherserver'}};
   73:     }
   74:     if (!defined($switch_to)) { return FORBIDDEN; }
   75: 
   76:     if ($env{'form.role'} && 
   77: 	!exists($env{'user.role.'.$env{'form.role'}})) { return FORBIDDEN; }
   78: 
   79:     #remove session env, and log event
   80:     unlink($r->dir_config('lonIDsDir')."/$handle.id");
   81:     my %temp=('switchserver' => time.':'.$env{'form.otherserver'},
   82: 	      $env{'form.role'});
   83:     &Apache::lonnet::put('email_status',\%temp);
   84:     &Apache::lonnet::log($env{'user.domain'},$env{'user.name'},
   85: 			 $env{'user.home'},
   86: 			 "Switch Server to $env{'form.otherserver'} with role $env{'form.role'} $ENV{'REMOTE_ADDR'}");
   87: 
   88:     &Apache::loncommon::content_type($r,'text/html');
   89:     $r->send_http_header;
   90:     return OK if $r->header_only;
   91: # -------------------------------------------------------- Menu script and info
   92: 	   
   93:     my $windowinfo=&Apache::lonmenu::close();
   94:     $windowinfo.=&Apache::lonnavmaps::close();
   95: # ---------------------------------------------------------------- Get handover
   96: 
   97:     my %info=('ip'       => $ENV{'REMOTE_ADDR'},
   98: 	      'domain'   => $env{'user.domain'},
   99: 	      'username' => $env{'user.name'},
  100: 	      'role'     => $env{'form.role'},
  101: 	      'server'   => $r->dir_config('lonHostID'));
  102:     my $token = &Apache::lonnet::tmpput(\%info,$env{'form.otherserver'});
  103:     my $switch='<meta HTTP-EQUIV="Refresh" CONTENT="0.5; url=http://'.$switch_to.'/adm/migrateuser?token='.$token.'">';
  104:     my $bodytag=&Apache::loncommon::bodytag('Switching Server ...');
  105: # --------------------------------------------------------------- Screen Output
  106:     $r->print(<<ENDDOCUMENT);
  107: 	   <html>
  108: 	       <head><title>The LearningOnline Network with CAPA Logout</title>
  109: 	       $switch
  110: 	       </head>
  111: 	       $bodytag
  112: 	       $windowinfo
  113: 	       </body>
  114: 	       </html>
  115: ENDDOCUMENT
  116: 
  117:     &Apache::lonnet::flushcourselogs();
  118:     return OK;
  119: }
  120: 
  121: 1;
  122: __END__
  123: 
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