How to prevent my site page to be loaded via 3rd party site frame of iFrame

问题

How can I find out that my page is embedded as a frame to other site during page loading? I guess referrer request header can\'t help me here? Thanks.

回答1:

You cannot check it from the server's side, but you can use javascript to detect it after the page has loaded. Compare top and self, if they're not identical, you are in a frame.

Additionally, some modern browsers respect 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.

Users include Google's Picasa, that cannot be embedded in a frame.

Browsers that support the header, with the minimum version:

IE8 and IE9
Opera 10.50
Safari 4
Chrome 4.1.249.1042
Firefox 3.6.9 (older versions with NoScript)

回答2:

Stackoverflow includes some JS to test it (master.js). This is the relevant part of it:

if(top!=self){
    top.location.replace(document.location);
    alert("For security reasons, framing is not allowed; click OK to remove the frames.")
}

But keep in mind that JS can be disabled.

回答3:

For modern browsers, you can use CSP (Content Security Policy), which is a standard. The following header will prevent the document from loading in a frame anywhere:

Content-Security-Policy: frame-ancestors 'none'

(IE 11 needs the X- prefix, though). You can also change 'none' to the origin on which framing is allowed, such as your own site.

To cover the older browsers, this is best used together with @Maerlyn's answer.

回答4:

you can prevent loading you page in an iframe with javascript

<script type="text/javascript">
if ( window.self !== window.top ) {
    window.top.location.href=window.location.href;
}
</script>

this code change address of container of your page's iframe to your page address and force container to show your page.

回答5:

Or you can block a specific domain if you don't mind your content in some locations but don't want it on a certain site. For example, if offendingdomain.com was embedding your content, you could do this:

<script type="text/javascript">
    if(document.referrer.indexOf("offendingdomain.com") != -1) {
        window.location = "http://www.youtube.com/watch_popup?v=oHg5SJYRHA0";
    }
</script>

This would check the parent document's location and see if it's the offendingdomain.com that is embedding your content. This script will then send that iframe to a certain famous youtube video as punishment. In effect they just Rick-Rolled themselves.

回答6:

Use javascript to check if it was loaded on iframe by placing the following script at the end of your php file and redirect to a page that displays warning or notice that your page should not be loaded using iframe.

<script type="text/javascript">
if(top.location != window.location) {
    window.location = '/error_iframe.php';
}
</script>

来源：https://stackoverflow.com/questions/2896623/how-to-prevent-my-site-page-to-be-loaded-via-3rd-party-site-frame-of-iframe

标签

php

python

iframe

http-headers

frame