[BACK]Return to switchserver.pm CVS log [TXT] [DIR] Up to [LON-CAPA] / loncom / auth
File:  [LON-CAPA] / loncom / auth / switchserver.pm
Revision 1.4: download - view: text, annotated - select for diffs
Fri Oct 28 21:51:43 2005 UTC (19 years, 2 months ago) by albertel
Branches: MAIN
CVS tags: HEAD
- switch server can now pick a destination server if one isn't specified
- migrate user can redirect to roles screen if no role specified

# The LearningOnline Network
# Switch Servers Handler
#
# $Id: switchserver.pm,v 1.4 2005/10/28 21:51:43 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::switchserver;

use strict;
use Apache::Constants qw(:common);
use Apache::lonnet;
use Apache::lonmenu;
use CGI::Cookie();
use Apache::lonlocal;

sub init_env {
    my ($r) = @_;
    my $requrl=$r->uri;
    my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
    my $lonid=$cookies{'lonID'};
    my $cookie;
    if (!$lonid) { return undef; }

    my $handle=$lonid->value;
    $handle=~s/\W//g;
    my $lonidsdir=$r->dir_config('lonIDsDir');
    if ((!-e "$lonidsdir/$handle.id") || ($handle eq '')) {
	$r->log_reason("Cookie $handle not valid", $r->filename); 
	return undef;
    }

    &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
    
    return $handle;
}

sub handler {
    my $r = shift;
    
    
    my $handle=&init_env($r);
    if (!defined($handle)) { return FORBIDDEN; }

    &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
					    ['otherserver','role']);
   
    my $switch_to=$Apache::lonnet::hostname{$env{'form.otherserver'}};
    if (!$env{'form.otherserver'}) {
	$env{'form.otherserver'}=&Apache::lonnet::spareserver(30000,undef,1);
	$switch_to=$Apache::lonnet::hostname{$env{'form.otherserver'}};
    }
    if (!defined($switch_to)) { return FORBIDDEN; }

    if ($env{'form.role'} && 
	!exists($env{'user.role.'.$env{'form.role'}})) { return FORBIDDEN; }

    #remove session env, and log event
    unlink($r->dir_config('lonIDsDir')."/$handle.id");
    my %temp=('switchserver' => time.':'.$env{'form.otherserver'},
	      $env{'form.role'});
    &Apache::lonnet::put('email_status',\%temp);
    &Apache::lonnet::log($env{'user.domain'},$env{'user.name'},
			 $env{'user.home'},
			 "Switch Server to $env{'form.otherserver'} with role $env{'form.role'} $ENV{'REMOTE_ADDR'}");

    &Apache::loncommon::content_type($r,'text/html');
    $r->send_http_header;
    return OK if $r->header_only;
# -------------------------------------------------------- Menu script and info
	   
    my $windowinfo=&Apache::lonmenu::close();
    $windowinfo.=&Apache::lonnavmaps::close();
# ---------------------------------------------------------------- Get handover

    my %info=('ip'       => $ENV{'REMOTE_ADDR'},
	      'domain'   => $env{'user.domain'},
	      'username' => $env{'user.name'},
	      'role'     => $env{'form.role'},
	      'server'   => $r->dir_config('lonHostID'));
    my $token = &Apache::lonnet::tmpput(\%info,$env{'form.otherserver'});
    my $switch='<meta HTTP-EQUIV="Refresh" CONTENT="0.5; url=http://'.$switch_to.'/adm/migrateuser?token='.$token.'">';
    my $bodytag=&Apache::loncommon::bodytag('Switching Server ...');
# --------------------------------------------------------------- Screen Output
    $r->print(<<ENDDOCUMENT);
	   <html>
	       <head><title>The LearningOnline Network with CAPA Logout</title>
	       $switch
	       </head>
	       $bodytag
	       $windowinfo
	       </body>
	       </html>
ENDDOCUMENT

    &Apache::lonnet::flushcourselogs();
    return OK;
}

1;
__END__
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