Re: [squid-users] Replacing an image based on the refer...

> > I need to use an external program to potentially replace images requests,
> > based on the referers, but url_rewrite does not pass the referer.
> > It is for people direct linking images on many external sites/forums.
> > I need the referer because the images seen directly on our site should not be
> > replaced.
> > Would a combination with external_acl do the trick?
>
> Yes it would. However keep in mind that the referer header can be easily
> forged and get past this type of protection.

Indeed; but forging the header won't be easily done from forums/blogs links hopefuly.

> > The thing is, I need also to rewrite legit URLs in some other cases...
> > Can I have more than one url_rewrite blocks?
> >
> > url_rewrite_program "/squid/abuse_rewrite.php"
> > url_rewrite_children 5
> > url_rewrite_concurrency 0
> > url_rewrite_host_header off
> > url_rewrite_access allow abuser
> > url_rewrite_access deny all
> >
> > url_rewrite_program "/squid/oldurl2newurl.php"
> > url_rewrite_children 5
> > url_rewrite_concurrency 0
> > url_rewrite_host_header off
> > url_rewrite_access allow all
> >
>
> You will find its often better to redirect users with 302.
> That can be done most efficiently like so:
>
> acl oldURL ...
> deny_info http://new.location oldURL
> http_access deny oldURL
>
> can be done seperately to cover as many different redirections and cases
> as you need.

The problem is that the rewriting can be complex and context dependant...
By example: only big abusers images will be changed (decision needs an external script).
Other example: *.small.* -> *.320.*, etc...
I need an external script that can handle complex cases.
So, can I have more than one url_rewrite "blocks"?

Thx,
JD

      
Received on Wed Aug 13 2008 - 08:36:43 MDT