[Zope] Blocking image/photo hotlinking

[Marc Lindahl]

Image has a 'precondition' field, which if I remember right is some 
method executed before accessing the image... maybe you could write a 
method to check the http referrer, and see if it's within your site?  
Or maybe monkeypatch Image to do that with every image?

On Monday, March 22, 2004, at 04:30  AM, Ulrich Wisser wrote:

> Hi Jake,
>
>> I have noticed that more and more sites are hotlinking images from my 
>> Zope site. There seem to be solutions for Apache using .httaccess but 
>> nothing in Zope or for the products.
>
> the easiest solution would be to create a Python Script, that returns 
> the image in case the referer matches your site or otherwise returns 
> an image with a message like "block due to copyright infringment".
> This solution will cause some work on your site, cause you will have 
> to move all your images to a new location and replace the old one with 
> the script.
>
> If you have Zope behind Apache you could also block requests in 
> Apache. Apache allows to check referer for blocking, but you can't 
> send them an alternative image.
>
> Ulrich
>
>
>
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