[mod_rewrite] Defeating image hot-linking - Tilted Forum Project - TFP - Sexuality, Philosophy and Political Discussion

seretogis · 06-17-2004, 11:46 AM

I've been looking around for the most efficient way to do this and I've learned how to deny access to linked files on my site, but replacing requests with a "denied" image is proving to be more of a pain in the ass.

Here's what I'm using:

Code:

Rewriteengine on
RewriteCond %{HTTP_REFERER} !^$
RewriteCond %{HTTP_REFERER} !^http://seretogis.org/.*$ [NC]
RewriteCond %{HTTP_REFERER} !^http://www.seretogis.org/.*$ [NC]
RewriteCond %{HTTP_REFERER} !^http://wrath.seretogis.org/.*$ [NC]
RewriteCond %{HTTP_REFERER} !^http://word.seretogis.org/.*$ [NC]
RewriteCond %{HTTP_REFERER} !^http://pwned.inf7.net/.*$ [NC]
RewriteCond %{HTTP_REFERER} !^http://www.inf7.net/.*$ [NC]
RewriteRule .*\.(jpg|doc|txt|gif|bmp|jpeg|png)$ http://www.seretogis.org/files/linkables/dontlinkme.jpg [R,NC]

And here is a linked image so you can see what happens:
-

-

Any ideas what may be the problem?

cthulu23 · 06-17-2004, 04:59 PM

You've set up an infinite loop as the redirection url meets the redirection reqirements.

Edit: There is a built in safety check in Apache, but it is sensitive to slashes and other special characters. Maybe try giving the relative path to the jpg and don't start the path with a "/"...maybe something like "files/linkables/dontlinkme.jpg"

2nd edit: You also might need to use ReWriteBase in this case.

Halx · 06-17-2004, 07:50 PM

I just visit http://www.htmlbasix.com for their code generator

seretogis · 06-17-2004, 11:32 PM

Quote:

Originally posted by cthulu23
You've set up an infinite loop as the redirection url meets the redirection reqirements.

Yes, this was the problem! I simply renamed the dontlinkme.jpg file to dontlinkme.jpe and changed it appropriately in the .htaccess and it works like a charm. Many thanks!

06-17-2004, 11:46 AM	#1 (permalink)
seretogis Huggles, sir? Join Date: May 2003 Location: Seattle	[mod_rewrite] Defeating image hot-linking I've been looking around for the most efficient way to do this and I've learned how to deny access to linked files on my site, but replacing requests with a "denied" image is proving to be more of a pain in the ass. Here's what I'm using: Code: Rewriteengine on RewriteCond %{HTTP_REFERER} !^$ RewriteCond %{HTTP_REFERER} !^http://seretogis.org/.$ [NC] RewriteCond %{HTTP_REFERER} !^http://www.seretogis.org/.$ [NC] RewriteCond %{HTTP_REFERER} !^http://wrath.seretogis.org/.$ [NC] RewriteCond %{HTTP_REFERER} !^http://word.seretogis.org/.$ [NC] RewriteCond %{HTTP_REFERER} !^http://pwned.inf7.net/.$ [NC] RewriteCond %{HTTP_REFERER} !^http://www.inf7.net/.$ [NC] RewriteRule .\.(jpg\|doc\|txt\|gif\|bmp\|jpeg\|png)$ http://www.seretogis.org/files/linkables/dontlinkme.jpg [R,NC] And here is a linked image so you can see what happens: -- Any ideas what may be the problem? __________________ seretogis* - sieg heil perfect little dream the kind that hurts the most, forgot how it feels well almost no one to blame always the same, open my eyes wake up in flames

06-17-2004, 04:59 PM	#2 (permalink)
cthulu23 Banned Join Date: Apr 2003	You've set up an infinite loop as the redirection url meets the redirection reqirements. Edit: There is a built in safety check in Apache, but it is sensitive to slashes and other special characters. Maybe try giving the relative path to the jpg and don't start the path with a "/"...maybe something like "files/linkables/dontlinkme.jpg" 2nd edit: You also might need to use ReWriteBase in this case. Last edited by cthulu23; 06-17-2004 at 05:30 PM.

06-17-2004, 07:50 PM	#3 (permalink)
Halx Please touch this. Owner/Admin Join Date: Jan 2002 Location: Manhattan	I just visit http://www.htmlbasix.com for their code generator __________________ - Hal(x) "But suppose everybody on our side felt that way." "Then I'd certainly be a damned fool to feel any other way. Wouldn't I?" [Read Me]