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Diff for /loncom/auth/lonracc.pm between versions 1.4 and 1.16

version 1.4, 2002/01/17 19:25:31 version 1.16, 2005/02/10 22:30:56
Line 25 Line 25
 #  #
 # http://www.lon-capa.org/  # http://www.lon-capa.org/
 #  #
 # (lonacc: Cookie Based Access Handler  
 # 5/21/99,5/22,5/29,5/31,6/15 Gerd Kortemeyer)  
 # 6/16,6/18,7/3,  
 # 6/30/00 Gerd Kortemeyer  
   
 package Apache::lonracc;  package Apache::lonracc;
   
 use strict;  use strict;
 use Apache::Constants qw(:common :remotehost);  use Apache::Constants qw(:common :remotehost);
   use Apache::lonnet();
 use Apache::File();  use Apache::File();
   use IO::Socket;
   
   sub subscribed {
       my ($filename,$id) = @_;
       my $found=0;
       my $hostname=$Apache::lonnet::hostname{$id};
       my (undef,undef,undef,undef,$ip) = gethostbyname($hostname);
       $ip=inet_ntoa($ip);
       my $expr='^'.$id.':'.$ip.':';
       $expr =~ s/\./\\\./g;
       my $sh;
       if ($sh=Apache::File->new("$filename.subscription")) {
    while (my $subline=<$sh>) { if ($subline =~ /$expr/) { $found=1; } }
    $sh->close();
       }
       return $found;
   }
   
 sub handler {  sub handler {
     my $r = shift;      my $r = shift;
     my $reqhost;      my $reqhost = $r->get_remote_host(REMOTE_NOLOOKUP);
     unless ($reqhost=$r->get_remote_host(REMOTE_DOUBLE_REV)) {      my %iphost=&Apache::lonnet::get_iphost();
        $r->log_reason("Spoof request");      my $hostids=$iphost{$reqhost};
        return FORBIDDEN;      if (!$hostids && $reqhost ne '127.0.0.1' ) {
    $r->log_reason("Unable to find a host for ".
          $r->get_remote_host(REMOTE_NOLOOKUP));
    return FORBIDDEN;
     }      }
     my $readline;      if ($reqhost eq '127.0.0.1') {
     my $lontabdir=$r->dir_config('lonTabDir');   return OK;
     {      }
        my $fh;      my $return;
        unless ($fh=Apache::File->new("$lontabdir/hosts.tab")) {      my @ids=();
           $r->log_reason("Could not find host tab file");      my $id;
           return FORBIDDEN;  
        }  
        while ($readline=<$fh>) {  
           my ($id,$domain,$role,$name,$ip)=split(/:/,$readline);  
           if ($name =~ /$reqhost/i) {  
               my $filename=$r->filename;  
               if ((-e "$filename.$id") || ($filename=~/\.meta$/)) {  
          return OK;  
               } else {  
                  $r->log_reason("$id not subscribed", $r->filename);  
                  return FORBIDDEN;  
               }  
           }  
        }  
   
       foreach $id (@{$hostids}) {
    my $filename=$r->filename;
    my $uri =$r->uri;
    if ((-e "$filename.$id") ||
       &subscribed($filename,$id) ||
       ($filename=~/\.meta$/) ||
       ($uri=~m|^/raw/uploaded|)) {
       return OK;
    } else {
       $return=FORBIDDEN;
       push(@ids,$id);
    }
       }
       if ($return == FORBIDDEN) {
    $r->log_reason(join(':',@ids)." not subscribed", $r->filename);
    return FORBIDDEN;
     }      }
     $r->log_reason("Invalid request for file transfer from $reqhost",       $r->log_reason("Invalid request for file transfer from $reqhost", 
                    $r->filename);                      $r->filename); 
Removed from v.1.4  
changed lines
  Added in v.1.16

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