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Up to [LON-CAPA] / loncom / auth

In process of removing remote control, remote navmap and different icon modes code
- removed no_inline_link argument from loncommon::start_page, loncommon::bodytag
- removed subs
    o loncommon::head: it wasn't used
    o loncommon::endheadtag: functionality now covered by loncommon::headtag
    o lonmenu::registerurl: functionality moved to loncommon::headtag, because it was the only function that called registerurl
- removed remote control related translations in de.pm
- refactoring and cleanup

    1: # The LearningOnline Network
    2: # Switch Servers Handler
    3: #
    4: # $Id: switchserver.pm,v 1.25 2010/03/22 20:11:08 droeschl 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:     
   41:     if (-e $env{'user.environment'}) {
   42: 	return  $env{'user.environment'};
   43:     }
   44:     my $requrl=$r->uri;
   45:     my $handle= &Apache::lonnet::check_for_valid_session($r);
   46:     if ($handle ne '') {
   47: 	return undef;
   48:     }
   49:     my $lonidsdir=$r->dir_config('lonIDsDir');
   50:     &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
   51:     
   52:     return $r->dir_config('lonIDsDir')."/$handle.id";
   53: }
   54: 
   55: sub do_redirect {
   56:     my ($r,$url,$only_body,$extra_text) = @_;
   57:     $r->send_http_header;
   58:     my $start_page = 
   59: 	&Apache::loncommon::start_page('Switching Server ...',undef,
   60: 				       {'redirect'       => [0.5,$url],
   61: 					'only_body'      => $only_body,});
   62:     my $end_page   = &Apache::loncommon::end_page();
   63:     $r->print($start_page.$extra_text.$end_page);
   64:     return OK;
   65: 
   66: }
   67: 
   68: sub handler {
   69:     my ($r) = @_;
   70:     
   71:     my $handle=&init_env($r);
   72:     if (!defined($handle)) { return FORBIDDEN; }
   73: 
   74:     &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
   75: 				['otherserver','role','origurl','symb']);
   76: 
   77:     my $switch_to=&Apache::lonnet::hostname($env{'form.otherserver'});
   78:     if (! $env{'form.otherserver'}) {
   79: 	$env{'form.otherserver'} =	
   80: 	    &Apache::lonnet::find_existing_session($env{'user.domain'},
   81: 						   $env{'user.name'});
   82: 	if (! $env{'form.otherserver'}) {
   83: 	    $env{'form.otherserver'} = 
   84: 		&Apache::lonnet::spareserver(30000,undef,1);
   85: 	}
   86: 
   87: 	$switch_to=&Apache::lonnet::hostname($env{'form.otherserver'});
   88:     }
   89: 
   90:     if (!defined($switch_to)) { return FORBIDDEN; }
   91: 
   92:     if ($env{'user.name'} eq 'public'
   93: 	&& $env{'user.domain'} eq 'public') {
   94: 	my $url = 'http://'.$switch_to.$r->uri;
   95: 	return &do_redirect($r,$url,1)
   96:     }
   97: 
   98:     if ($env{'form.role'} && 
   99: 	!exists($env{'user.role.'.$env{'form.role'}})) { return FORBIDDEN; }
  100: 
  101:     #remove session env, and log event
  102:     unlink($handle);
  103:     my %temp=('switchserver' => time.':'.$env{'form.otherserver'},
  104: 	      $env{'form.role'});
  105:     &Apache::lonnet::put('email_status',\%temp);
  106:     &Apache::lonnet::log($env{'user.domain'},$env{'user.name'},
  107: 			 $env{'user.home'},
  108: 			 "Switch Server to $env{'form.otherserver'} with role $env{'form.role'} $ENV{'REMOTE_ADDR'}");
  109: 
  110:     &Apache::loncommon::content_type($r,'text/html');
  111: 
  112:     #expire the cookie
  113:     my $c = new CGI::Cookie(-name    => 'lonID',
  114: 			    -value   => '',
  115: 			    -expires => '-10y',);
  116:     $r->header_out('Set-cookie' => $c);
  117: 
  118:     if ($r->header_only) {
  119: 	$r->send_http_header;
  120: 	return OK;
  121:     }
  122: # -------------------------------------------------------- Menu script and info
  123: 	   
  124: # ---------------------------------------------------------------- Get handover
  125: 
  126:     my %info=('ip'       => $ENV{'REMOTE_ADDR'},
  127: 	      'domain'   => $env{'user.domain'},
  128: 	      'username' => $env{'user.name'},
  129: 	      'role'     => $env{'form.role'},
  130: 	      'server'   => $r->dir_config('lonHostID'));
  131:     if ($env{'form.origurl'}) {
  132:         $info{'origurl'} = $env{'form.origurl'};
  133:     }
  134:     if ($env{'form.symb'}) {
  135:         $info{'symb'} = $env{'form.symb'};
  136:     }
  137:     if ($env{'request.sso.login'}) {
  138: 	$info{'sso.login'} = $env{'request.sso.login'};
  139:     }
  140:     if ($env{'request.sso.reloginserver'}) {
  141:         $info{'sso.reloginserver'} = $env{'request.sso.reloginserver'};
  142:     }
  143:     my $token = &Apache::lonnet::tmpput(\%info,$env{'form.otherserver'});
  144:     my $url ='http://'.$switch_to.'/adm/login?'.
  145: 	'domain='.$env{'user.domain'}.
  146: 	'&username='.$env{'user.name'}.
  147: 	'&token='.$token;
  148: # --------------------------------------------------------------- Screen Output
  149:     &Apache::lonnet::flushcourselogs();
  150:     return &do_redirect($r, $url, 0);
  151: }
  152: 
  153: 1;
  154: __END__
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