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- exclude errors from hash returned by  &lonnet::tmpget().
- detect case where hash is empty where lonnet::tmpget() is called by migrateuser.pm and
  lonpreferences.pm

    1: # The LearningOnline Network
    2: # Starts a user off based of an existing token.
    3: #
    4: # $Id: migrateuser.pm,v 1.13 2008/03/24 04:56:07 raeburn 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::migrateuser;
   30: 
   31: use strict;
   32: use LONCAPA;
   33: use Apache::Constants qw(:common :http :methods);
   34: use Apache::lonauth;
   35: use Apache::lonnet;
   36: use Apache::lonlocal;
   37: 
   38: sub goto_login {
   39:     my ($r) = @_;
   40:     &Apache::loncommon::content_type($r,'text/html');
   41:     $r->send_http_header;
   42:     $r->print(&Apache::loncommon::start_page('Going to login',undef,
   43: 					     {'redirect' =>
   44: 						  [0,'/adm/login'],}).
   45: 	      '<h1>'.&mt('One moment please...').'</h1>'.
   46: 	      '<p>'.&mt('Transferring to login page.').'</p>'.
   47: 	      &Apache::loncommon::end_page());
   48:     return OK;
   49: }
   50: 
   51: 
   52: sub sso_check {
   53:     my ($data) = @_;
   54:     my %extra_env;
   55:     if ($data->{'sso.login'}) {
   56: 	$extra_env{'request.sso.login'} = $data->{'sso.login'};
   57:     }
   58:     if ($data->{'sso.reloginserver'}) {
   59:         $extra_env{'request.sso.reloginserver'} = 
   60:             $data->{'sso.reloginserver'};
   61:     }
   62:     return \%extra_env;
   63: }
   64: 
   65: sub handler {
   66:     my ($r) = @_;
   67:     
   68:     &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['token']);
   69:     my %data =   &Apache::lonnet::tmpget($env{'form.token'});
   70:     if (keys(%data) == 0) {
   71:         return &goto_login($r);
   72:     }
   73:     my $delete = &Apache::lonnet::tmpdel($env{'form.token'});
   74: 
   75:     &Apache::lonlocal::get_language_handle($r);
   76: 
   77:     if ($delete ne 'ok') {
   78: 	return &goto_login($r);
   79:     }
   80: 
   81:     if ($data{'ip'} ne $ENV{'REMOTE_ADDR'} || !defined($data{'username'}) ||
   82: 	!defined($data{'domain'}) ) {
   83: 	return &goto_login($r);
   84:     }
   85: 
   86:     &Apache::lonnet::logthis("Allowing access for $data{'username'}\@$data{'domain'} to $data{'role'}");
   87:     my $home=&Apache::lonnet::homeserver($data{'username'},$data{'domain'});
   88:     if ($home =~ /(con_lost|no_such_host)/) { return &goto_login($r); }
   89: 
   90:     my $extra_env = &sso_check(\%data);
   91: 
   92:     if (!$data{'role'}) {
   93: 	my $handle = &Apache::lonnet::check_for_valid_session($r);
   94: 	if ($handle) {
   95: 	    &Apache::lonnet::transfer_profile_to_env($r->dir_config('lonIDsDir'),
   96: 						     $handle);
   97: 	    if ($env{'request.course.id'}) {
   98: 		$r->internal_redirect('/adm/navmaps');
   99: 	    } else {
  100: 		$r->internal_redirect('/adm/roles');
  101: 	    }
  102: 	} else {
  103: 	    &Apache::lonauth::success($r,$data{'username'},$data{'domain'},
  104: 				      $home,'/adm/roles',$extra_env);
  105: 
  106: 	}
  107: 	return OK;
  108: 
  109:     }
  110: 
  111:     my $next_url='/adm/roles?selectrole=1&amp;'.&escape($data{'role'}).'=1';
  112: 
  113:     
  114:     &Apache::lonauth::success($r,$data{'username'},$data{'domain'},$home,
  115: 			      $next_url,$extra_env);
  116:     return OK;
  117: }
  118: 
  119: 1;
  120: __END__