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Annotation of loncom/auth/switchserver.pm, revision 1.7

1.1       albertel    1: # The LearningOnline Network
                      2: # Switch Servers Handler
                      3: #
1.7     ! albertel    4: # $Id: switchserver.pm,v 1.6 2005/12/28 16:46:47 albertel Exp $
1.1       albertel    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) = @_;
1.5       albertel   40:     
                     41:     if (-e $env{'user.environment'}) {
                     42: 	return  $env{'user.environment'};
                     43:     }
1.1       albertel   44:     my $requrl=$r->uri;
                     45:     my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
                     46:     my $lonid=$cookies{'lonID'};
                     47:     my $cookie;
                     48:     if (!$lonid) { return undef; }
                     49: 
                     50:     my $handle=$lonid->value;
                     51:     $handle=~s/\W//g;
                     52:     my $lonidsdir=$r->dir_config('lonIDsDir');
                     53:     if ((!-e "$lonidsdir/$handle.id") || ($handle eq '')) {
                     54: 	$r->log_reason("Cookie $handle not valid", $r->filename); 
                     55: 	return undef;
                     56:     }
                     57: 
                     58:     &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
                     59:     
1.5       albertel   60:     return $r->dir_config('lonIDsDir')."/$handle.id";
1.1       albertel   61: }
                     62: 
                     63: sub handler {
1.5       albertel   64:     my ($r) = @_;
1.1       albertel   65:     
                     66:     my $handle=&init_env($r);
                     67:     if (!defined($handle)) { return FORBIDDEN; }
                     68: 
                     69:     &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
                     70: 					    ['otherserver','role']);
1.5       albertel   71: 
1.1       albertel   72:     my $switch_to=$Apache::lonnet::hostname{$env{'form.otherserver'}};
1.4       albertel   73:     if (!$env{'form.otherserver'}) {
                     74: 	$env{'form.otherserver'}=&Apache::lonnet::spareserver(30000,undef,1);
                     75: 	$switch_to=$Apache::lonnet::hostname{$env{'form.otherserver'}};
                     76:     }
1.5       albertel   77: 
1.1       albertel   78:     if (!defined($switch_to)) { return FORBIDDEN; }
1.4       albertel   79: 
                     80:     if ($env{'form.role'} && 
                     81: 	!exists($env{'user.role.'.$env{'form.role'}})) { return FORBIDDEN; }
1.1       albertel   82: 
                     83:     #remove session env, and log event
1.5       albertel   84:     unlink($handle);
1.1       albertel   85:     my %temp=('switchserver' => time.':'.$env{'form.otherserver'},
                     86: 	      $env{'form.role'});
                     87:     &Apache::lonnet::put('email_status',\%temp);
                     88:     &Apache::lonnet::log($env{'user.domain'},$env{'user.name'},
                     89: 			 $env{'user.home'},
                     90: 			 "Switch Server to $env{'form.otherserver'} with role $env{'form.role'} $ENV{'REMOTE_ADDR'}");
                     91: 
                     92:     &Apache::loncommon::content_type($r,'text/html');
                     93:     $r->send_http_header;
                     94:     return OK if $r->header_only;
                     95: # -------------------------------------------------------- Menu script and info
                     96: 	   
                     97:     my $windowinfo=&Apache::lonmenu::close();
                     98:     $windowinfo.=&Apache::lonnavmaps::close();
                     99: # ---------------------------------------------------------------- Get handover
                    100: 
1.3       albertel  101:     my %info=('ip'       => $ENV{'REMOTE_ADDR'},
                    102: 	      'domain'   => $env{'user.domain'},
                    103: 	      'username' => $env{'user.name'},
                    104: 	      'role'     => $env{'form.role'},
                    105: 	      'server'   => $r->dir_config('lonHostID'));
                    106:     my $token = &Apache::lonnet::tmpput(\%info,$env{'form.otherserver'});
1.6       albertel  107:     my $switch='<meta HTTP-EQUIV="Refresh" CONTENT="0.5; url=http://'.$switch_to.'/adm/login?domain='.$env{'user.domain'}.'&username='.$env{'user.name'}.'&token='.$token.'">';
1.7     ! albertel  108:     my $start_page = &Apache::loncommon::start_page('Switching Server ...',
        !           109: 						    $switch);
        !           110:     my $end_page   = &Apache::loncommon::end_page();
1.1       albertel  111: # --------------------------------------------------------------- Screen Output
1.7     ! albertel  112:     $r->print($start_page.$windowinfo.$end_page);
1.2       albertel  113: 
1.1       albertel  114:     &Apache::lonnet::flushcourselogs();
                    115:     return OK;
                    116: }
                    117: 
                    118: 1;
                    119: __END__
                    120: 
                    121: 
                    122: 
                    123: 
                    124: 
                    125: 
                    126: 
                    127: