Watermark

I need some kind of a custom rewriterule to place watermarks onto my website.

I have files called:

watermark.png
empty.png
watermark.php which includes the following code:

<? 
$src = $_GET['src']; 

header('Content-type: image/jpeg'); 

//this will prevent the watermark from showing up in the thumbnail images 

$size = getimagesize($src); 
if ($size[1] < 400) { 
$watermark = imagecreatefrompng('empty.png'); 
} else { 
$watermark = imagecreatefrompng('watermark.png'); 
} 

$watermark_width = imagesx($watermark); 
$watermark_height = imagesy($watermark); 
$image = imagecreatetruecolor($watermark_width, $watermark_height); 

if(eregi('.gif',$src)) { 
$image = imagecreatefromgif($src); 
} 
elseif(eregi('.jpeg',$src)||eregi('.jpg',$src)) { 
$image = imagecreatefromjpeg($src); 
} 
elseif(eregi('.png',$src)) { 
$image = imagecreatefrompng($src); 
} 
else { 
exit("Your image is not a gif, jpeg or png image. Sorry."); 
} 

$dest_x = ($size[0] - $watermark_width) / 2; 
$dest_y = ($size[1] - $watermark_height) / 2;   
imagecolortransparent($watermark,imagecolorat($watermark,0,0)); 
imagecopyresampled($image, $watermark, $dest_x, $dest_y, 0, 0, $watermark_width, $watermark_height, $watermark_width, $watermark_height); 

imagejpeg($image, "", 95); 
imagedestroy($image); 
imagedestroy($watermark); 
?>

PHP:

All of these files are in the root directory.

I just need the htaccess rewriterule code if anyone can shed some light as to what it would be.

I've found the same system being used on a wordpress site with the following rewrite - RewriteRule ^(.*)wp-content/uploads/(.*) $1watermark.php?src=wp-content/uploads/$2

Sadly i don't know where to put this in my htaccess file and what to edit the file paths too?

I'm using vBulletin with VbSEO so my images are at /attachments/ even though they are in root/images/attachments

Really need this sorted tonight as i've got some important images going up tonight that i don't want stolen.

Many thanks,

Andy

 

Ok i found a different plugin which i think could be altered.

All i need is so that it only watermarks on images that are 400px wide or greater.

Here is the vBulletin code:

// begin variables

// the path to the PNG file that you want to overlay with
// must be on the local machine, not an http:// URL
$WATERMARK_PNG_FILE = '/home/aruffell/public_html/watermark.png';

// how you want to position the watermark enter either center or bottom_left
$WATERMARK_POSITION = 'center';

// user you want to see watermarking on - this is just for testing
// set to 0 to work for all users
$VB_USER_ID = 0;

// end variables - you shouldn't need to edit below here


// if there's no filepath to work with there's nothing we can do
// we also need the watermark file to exist
// if $VB_USER_ID is specified (for testing) show it just them
if(! empty($attachpath) && file_exists($WATERMARK_PNG_FILE) && ( $VB_USER_ID == 0 || $GLOBALS['vbulletin']->userinfo['userid'] == $VB_USER_ID )) {


	// derive output name
	$fo = preg_replace('/\.attach$/', '.marked', $attachpath);

	// image doesn't exist or thumbnail is newer than the cached file - create a watermarked version
	if( (! file_exists($fo) || filemtime($WATERMARK_PNG_FILE) > filemtime($fo) || true) && $fo != $attachpath ) {

		// decide what image type it is
		if( preg_match('/\.png$/i', $attachmentinfo['filename']) ) {
			$im = @imagecreatefrompng($attachpath);
		} elseif( preg_match('/\.jpg$/i', $attachmentinfo['filename']) ) {
			$im = @imagecreatefromjpeg($attachpath);
		
			// create an empty truecolor container
			$tempimage = @imagecreatetruecolor(@imagesx($im), @imagesy($im));
       
			// copy the 8-bit gif into the truecolor image
			@imagecopy($tempimage, $im,
				0, 0, 0, 0, 
				@imagesx($im), @imagesy($im)
			);
      
			// copy the source_id int
			$im = $tempimage;
		}

		// open the watermark image
		$wm = @imagecreatefrompng($WATERMARK_PNG_FILE);

		@imagealphablending($wm, false);
		@imagesavealpha($wm, true);

		// catch opening problems
		if($im && $wm) {

			if($WATERMARK_POSITION == 'center') {
				$pos_x = (imagesx($im) / 2) - (imagesx($wm) / 2);
				$pos_y = (imagesy($im) / 2) - (imagesy($wm) / 2);
			} else {
				$pos_x = imagesx($im) - imagesx($wm) - 10;
				$pos_y = imagesy($im) - imagesy($wm) - 10;
			}


			// merge the files together
			$copy_worked = @imagecopy($im,$wm,
     				$pos_x, $pos_y,
				0, 0, imagesx($wm), imagesy($wm)
			);
		}

		// write out the new image
		if($copy_worked) {

			// decide what image type it is
			if( preg_match('/\.png$/i', $attachmentinfo['filename']) ) {
				@imagepng($im,$fo);
			} elseif( preg_match('/\.jpg$/i', $attachmentinfo['filename']) ) {
				@imagejpeg($im,$fo);
			} elseif( preg_match('/\.gif$/i', $attachmentinfo['filename']) ) {
				@imagegif($im,$fo);
			}
		}
	}

	// check that the new file is there - if so open the file pointer to it
	if( @filesize($fo) > 0 && $fp2 = fopen($fo,'rb') ) {

		// re-send image size header
		header('Content-Length: '. filesize($fo));

		@fclose($fp);

		$fp = $fp2;

	}
}

Code (markup):

Any ideas?

Thanks,

Andy