--- loncom/auth/lontokacc.pm	2002/07/27 19:06:41	1.2
+++ loncom/auth/lontokacc.pm	2003/08/01 17:25:40	1.9
@@ -1,8 +1,7 @@
 # The LearningOnline Network
-# Low security Access Handler for Token-based access 
-# (clearance given by other loncapa host)
+# Access Handler for User File Transfers
 #
-# $Id: lontokacc.pm,v 1.2 2002/07/27 19:06:41 www Exp $
+# $Id: lontokacc.pm,v 1.9 2003/08/01 17:25:40 www Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -30,29 +29,60 @@
 package Apache::lontokacc;
 
 use strict;
-use Apache::Constants qw(:common);
+use Apache::Constants qw(:common :remotehost);
 use Apache::lonnet();
-use Apache::loncommon();
+use Apache::File();
+
 
 sub handler {
     my $r = shift;
-    &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
-                                            ['token','server']);
-    my $tmpinfo='no_token';
-    if (($ENV{'form.token'}) || ($ENV{'form.server'})) {
-        $tmpinfo=&Apache::lonnet::unescape(
-                   &Apache::lonnet::reply('tmpget:'.$ENV{'form.token'},
-                                                    $ENV{'form.server'}));
-        if ($tmpinfo eq $r->uri) {
-	   return OK;
-        }
+    my $reqhost = $r->get_remote_host(REMOTE_DOUBLE_REV);
+    if (!$reqhost && $r->get_remote_host(REMOTE_NOLOOKUP) eq $r->get_server_name()) { 
+        $reqhost = $r->get_server_name(); 
+    }
+    unless ($reqhost) {
+        $r->log_reason("Spoof request from ". $reqhost);
+        return FORBIDDEN;
+    }
+    if ($reqhost eq 'localhost.localdomain') {
+       return OK;
     }
-    $r->log_reason("Invalid token-based access ".$r->uri.' '.$tmpinfo,
-        $r->filename); 
+    my $readline;
+    my $lontabdir=$r->dir_config('lonTabDir');
+    {
+       my $fh;
+       unless ($fh=Apache::File->new("$lontabdir/hosts.tab")) {
+          $r->log_reason("Could not find host tab file");
+          return FORBIDDEN;
+       }
+       while ($readline=<$fh>) {
+          my ($id,$domain,$role,$name,$ip)=split(/:/,$readline);
+          if ($name =~ /$reqhost/i) {
+             return OK; 
+          }
+       }
+
+    }
+    $r->log_reason("Invalid request for user file transfer from $reqhost", 
+                   $r->filename); 
     return FORBIDDEN;
 }
 
+sub removefile {
+    my $r=shift;
+    if ($r->status==200) {
+        unlink($r->filename);
+	&Apache::lonnet::logthis('Unlinking '.$r->filename);
+    } else {
+        &Apache::lonnet::logthis('Failed to transfer '.$r->filename);
+    }
+}
 1;
 __END__
 
 
+
+
+
+
+