Greenguy's Board - PHP - How to get dimension of hotlink protected image? (TGP)

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PHP - How to get dimension of hotlink protected image? (TGP)

Hey all :)

I'm trying to retrieve the dimensions/resolution of the fullsize images of TGP galleries. getimagesize() is of course not working with hotlink protected images, so I guess the only way is establishing a connetion with fsockopen() and sending false referrer information.

I tried that already and retrieving http status, last modified date, filesize etc is no problem ... but how would I go about the resolution?

I tried sending a "GET /image.jpg" already, but then my browser prompts me to download the file and choses myscript.php as the filename.

My head hurts already :-/ Maybe there's a rather simple solution? Writing the output of the GET request to a temp file on my webspace and doing a getimagesize() was what I thought about ... but it seems a little overcomplicated?
Also ... retrieving all pictures of the ~700-800 tgp gallery submission every day would be quite a waste of bandwidth :-/ and even worse ... when I run my linkbot to check all submitted galleries, this would be ... HOLY MOSES ... too many gigs to count :o

Thanks for aaaaaaaaalllll help |headbang|

Actually PHP can bypass hotlinking(If I remember right, from some TGP scripts)

PHP Code:


		
			
list($width, $height, $type, $attr) = getimagesize("http://www.example.com/gifs/lo%20go.gif");

Also look at this code snippet from my thumbnailer routine:

PHP Code:


		
			
$wrkImage = imagecreatefromjpeg($rawPicURL);



echo imagesx($wrkImage); // image width

echo imagesy($wrkImage); // image height

Thanks for your answer :) Unfortunately it's not working for me, b/c as far as I know getimagesize() cannot bypass hotlinking |cry|

I tried it with this image:
http://www.shizzn.com/x/stuff/open/cimg3621.jpg - no hotlink protection
http://www.shizzn.com/x/stuff/prot/cimg3621.jpg - htaccess hotlink protection

I know tried it like that:

Code:

$target_host = "www.shizzn.com";

$target_path = "/x/stuff/prot/cimg3621.jpg";



#header("Content-Type: text/plain");

header("Content-Type: image/jpeg");

    $fp = fsockopen("$target_host", 80, $errno, $errstr, 5);

    if(!$fp){echo "$errstr ($errno)\n";}

    else

      {

      $out = "GET ". $target_path ." HTTP/1.1\r\n";

      $out .= "Host: ". $target_host ."\r\n";

      $out .= "Referer: http://". $target_host ."\r\n";

      $out .= "User-Agent: Blabla Browser Name(xyz)\r\n";

      $out .= "Keep-Alive: 200\r\n";

      $out .= "Connection: Close\r\n\r\n";



      fwrite($fp, $out);

      while (!feof($fp))

        {

        $status_request = fgets($fp, 500000);

        echo  $status_request;

        $file = fopen("temp_img.jpg","w+");

        fwrite($file,$status_request);

        fclose($file);

        }

      fclose($fp);

      }

but somehow it's just not working :( I'm no PHP expert, though I've been messing with it for years *lol ... if I could ... at least find out a way how to save the image to my server and then do a getimagesize() on the local file? |dizzy|

I just really s*ck! when it comes to file operations *lol If only a head request would also give info about the dimensions :( I'm using the head request to check the status (redirection, 404 etc) and the image size in bytes, which works perfectly fine :)

Forgive me for sounding naive, but isn't this one of the many reasons that anti-hotlinking protection is in place?

@greenie, No worries :)

I haven't used payed scripts for years, but as far as I remember they have anti-cheat mechanisms as well which are supposed to detect redirects, image size, dimensions and stuff. Brownie for example was one of the first - if not the first - scripts to retrieve image sizes and stuff.

So basically I'm just trying to find out how to do, what every good script should be able to do :)

It just has! to be possible to retrieve the dimensions of images, without downloading it entirely. After all, I want to make it a blazing fast script :D And right now it's sloooooooow ... but good! *lol

If only all submitters would just stick to the rules of TGPs/MGPs! *lol damn cheaters.