___DATA___
dog.gif
cat.gif
bird.gif

Upload form attempts:
upload1 = bat.gif
upload2 = dog.gif
upload3 = gopher.gif

Print out results:
bat.gif was successfull
dog.gif was a duplicate, not uploaded
gopher.gif was successfull

##</code><code>##

if ( param('upload1') ) {

my $num = 1;

&dirty_work($num);

}

if ( param('upload2') ) {

my $num = 2;

&dirty_work($num);
}

if ( param('upload3') ) {

my $num = 3;

&dirty_work($num);
}

if ( param('upload4') ) {

my $num = 4;
&dirty_work($num);
}


sub dirty_work {
my $num = shift;
    # take form data
    my $remotefile = param("upload$num");
# make new variable to prevent overwriting of form data
    my $filename = $remotefile;
    
    my $title = param("title$num");
    $title =~ s/&/&\#38/g;
    my $comments = param("comments$num");
    $comments =~ s/&/&\#38/g;
    # remove all directories in the file name path
    $filename =~ s/^.*[\\\/]//;

    my $localfile = "$uploaddir/$filename";
    my $type = uploadInfo($remotefile)->{'Content-Type'};
    unless ( $type eq 'image/pjpeg' || $type eq 'image/gif' || $type eq 'image/bmp') {
        print "Wrong!  This is not a supported file type.";
        exit;
}

##################################
# Check for duplicate filenames
##################################
foreach (keys %upload)
{
  my ($filename_check, $title_check, $comments_check, $w_check, $h_check, $count_check) = split(/::/, $upload{$_});
  if($filename eq "$filename_check") {
    print "<center><font color=red>Duplicate filename found: $filename_check</font></center>";
    exit;
  }
}
 
print "<font color=blue><center>Uploaded $filename</font></center>";