--- loncom/auth/lonracc.pm 2003/05/27 18:07:22 1.9 +++ loncom/auth/lonracc.pm 2007/03/02 23:17:48 1.21 @@ -1,7 +1,7 @@ # The LearningOnline Network # Access Handler for File Transfers # -# $Id: lonracc.pm,v 1.9 2003/05/27 18:07:22 albertel Exp $ +# $Id: lonracc.pm,v 1.21 2007/03/02 23:17:48 albertel Exp $ # # Copyright Michigan State University Board of Trustees # @@ -25,25 +25,31 @@ # # 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; use strict; use Apache::Constants qw(:common :remotehost); -use Apache::lonnet(); +use Apache::lonnet; use Apache::File(); +use IO::Socket; sub subscribed { my ($filename,$id) = @_; + + return 0 if (!-e "$filename.subscription"); + + my $hostname=&Apache::lonnet::hostname($id); + my (undef,undef,undef,undef,$ip) = gethostbyname($hostname); + + return 0 if (length($ip) != 4); + + $ip=inet_ntoa($ip); + + my $expr='^'.quotemeta($id).':'.quotemeta($ip).':'; + my $found=0; - my $expr='^'.$id.':'.$Apache::lonnet::hostip{$id}.':'; - $expr =~ s/\./\\\./g; - my $sh; - if ($sh=Apache::File->new("$filename.subscription")) { + if (my $sh=Apache::File->new("$filename.subscription")) { while (my $subline=<$sh>) { if ($subline =~ /$expr/) { $found=1; } } $sh->close(); } @@ -52,41 +58,41 @@ sub subscribed { sub handler { my $r = shift; - 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) { - $r->log_reason("Spoof request from ".$ENV{'REMOTE_ADDR'}); - return FORBIDDEN; - } - 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; - } - my $return; - my @ids=(); - while ($readline=<$fh>) { - my ($id,$domain,$role,$name,$ip)=split(/:/,$readline); - if ($name =~ /$reqhost/i) { - my $filename=$r->filename; - if ((-e "$filename.$id") || - &subscribed($filename,$id) || - ($filename=~/\.meta$/)) { - return OK; - } else { - $return=FORBIDDEN; - push(@ids,$id); - } - } - } - if ($return == FORBIDDEN) { - $r->log_reason(join(':',@ids)." not subscribed", $r->filename); - } + + my $filename=$r->filename; + if (!-e $filename) { + return NOT_FOUND; + } + + my $reqhost = $r->get_remote_host(REMOTE_NOLOOKUP); + my %iphost=&Apache::lonnet::get_iphost(); + my $hostids=$iphost{$reqhost}; + if (!$hostids && $reqhost ne '127.0.0.1' ) { + $r->log_reason("Unable to find a host for ". + $r->get_remote_host(REMOTE_NOLOOKUP)); + return FORBIDDEN; + } + if ($reqhost eq '127.0.0.1') { + return OK; + } + my $return; + my @ids; + + foreach my $id (@{$hostids}) { + my $uri =$r->uri; + if (($filename=~/\.meta$/) || + ($uri=~m|^/raw/uploaded|) || + (-e "$filename.$id") || + &subscribed($filename,$id) ) { + 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->filename);