use Apache::Constants qw(:common);
use Apache::Request;
use Apache::File;

sub handler {
  my $r = Apache::Request->new(shift);
  my $serverFile = $r->param('file');
  # needs some errorhandling here if $serverFile is not 
  # submitted, invalid paths, ...

  # get $contenttype somehow; I always save it in a
  # database when I upload the file
  
  my $fh = Apache::File->new($serverFile);
  binmode($fh);
  unless ($fh) {
    $r->log_error("Can't open '$serverFile': $!");
  } # unless
  else {
    $r->send_http_header($contenttype);
    $r->send_fd($fh);
  } # else
  return OK;
} # handler