php - Prevent iframe stealing

Question

I think someone is stealing my content using an iframe. My website is a forum and a user has just reported them to me.

How can I find their website programmatically (php,JavaScript,jQuery,HTML) if their are others doing this?

Is this allowed on the internet for them to do this and can I take action?

Answer 1

With JavaScript you can do

if(window.top==window){
 //not inside iframe
} else {
    if(parent.parent.someFunction){
       parent.parent.someFunction();
    } else {
       alert("framing is not allowed")
    }
}

OR

if (window.top !== window.self) window.top.location.replace(window.self.location.href);

Some modern browsers also support the X-FRAME-OPTIONS header, that can have two values:

* DENY – prevents the page from being rendered if it is contained in a frame
* SAMEORIGIN – same as above, unless the page belongs to the same domain as the top-level frameset holder.

Browsers that support the header:

* IE8 and IE9
* Opera 10.50
* Safari 4
* Chrome 4.1.249.1042
* Firefox with NoScript