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Annotation of loncom/auth/lonuploadedacc.pm, revision 1.10

1.1       www         1: # The LearningOnline Network
                      2: # Access Handler for User Files
                      3: #
1.10    ! albertel    4: # $Id: lonuploadedacc.pm,v 1.9 2003/05/13 01:56:32 www Exp $
1.1       www         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::lonuploadedacc;
                     30: 
1.7       www        31: #
                     32: # The way this is supposed to work:
                     33: #
                     34: # User A has client machine C
                     35: # User A is logged into LON-CAPA server S
                     36: # needs file from user B
                     37: # homeserver for user B is H
                     38: # 
                     39: # This handler runs on H
                     40: # To access a userfile:
                     41: # Server S generates a token and puts it into the query string of URL for H
                     42: # Client box C asks H for file with token issued by C
                     43: # H now must ask S if token is valid, uses S's lond-command tokenauthuserfile
                     44: 
1.1       www        45: use strict;
1.10    ! albertel   46: use Apache::Constants qw(:common :http);
1.1       www        47: use Apache::lonnet();
                     48: 
                     49: sub handler {
                     50:     my $r = shift;
1.2       www        51:     my $args=$r->args;
1.7       www        52:     &Apache::loncommon::get_unprocessed_cgi($args,['token','tokenissued']); 
1.3       albertel   53:     my (undef,undef,$udom,$uname,$ufile)=split(/\//,$r->uri);
1.2       www        54:     $ufile=~s/^[\~\.]+//;
1.7       www        55:     my $remoteserver=$ENV{'form.tokenissued'};
1.2       www        56:     my $reply=&Apache::lonnet::reply('tokenauthuserfile:'.
                     57:                  $udom.'/'.$uname.'/'.$ufile.':'.$ENV{'form.token'},
1.4       albertel   58: 				     $remoteserver);
1.2       www        59:     if ($reply eq 'ok') {
                     60:        return OK;
1.10    ! albertel   61:    } elsif ($reply eq 'con_lost' || $reply eq 'no_such_host') {
        !            62:        &Apache::lonnet::logthis("Server unavailable for userfile access $uname at $udom for $ufile with $remoteserver token $ENV{'form.token'}: $reply");
        !            63:        return HTTP_SERVICE_UNAVAILABLE;
1.2       www        64:    } else {
1.10    ! albertel   65:        &Apache::lonnet::logthis("Refused userfile access $uname at $udom for $ufile with $remoteserver token $ENV{'form.token'}: $reply");
1.2       www        66:        return FORBIDDEN;
                     67:    }
1.1       www        68: }
                     69: 
                     70: 1;
                     71: __END__
                     72: 
                     73: 
                     74: 
                     75: 
                     76: 
                     77: 
                     78: