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How to prevent redirect if image is embedded?
I currently have setup to redirect if a user direct access the image by browser. However I do not want to redirect if a image is embedded on the page using <img src=""/>
this is my nginx conf
location ~ "^/c/600x1200_90_webp/img-master/img/\d+/\d+/\d+/\d+/\d+/\d+/((?<filenum>\d+)[^/]+\.(jpg|png|webp))$" {
proxy_pass http://xxx.xxx.xxx.xxx:8081;
valid_referers server_names;
if ($invalid_referer = "1") {
return 301 http://example.com/detail?id=$filenum; }
}
How can I fix this?
Comments
In the spirit of not being a Stack Exchange cucklord who will explain why X is better than Y instead of answering the question:
Instead of checking for valid referrers (via
server_names), you should just be checking against blank referrers. A request from an embed usually™ has a non-empty Referer header as opposed to a direct link.Again, this is not water-tight as people can just spoof but I'm assuming you just need a "works most of the times" solution so here you go.