Dotan Cohen wrote:
And, the thing is, within this javascript_dump.php, HTTP_REFERER shows
nothing, because it gives you the referer of the html page (page1)
that contains this <script> tag (which might be something irrelevant,
i.e. google), and remote_addr gives you the IP address of the user.

I know that I can add a simple query parameter to specify the source
web page such as: javascript_dump.php?siteid=xyz, but this can be
faked very easily, and anyone can introduce themselves as any
affiliate.

Is there a way of getting (within the php) the site this php was
called from in a reasonably secure way? Any ideas/suggestions?

Thanks..

Duzayak,
Did you get this working the way you intented? If so, please share
with us what you did. Thanks.

There's no reasonably secure way of doing this. I see three possible solutions.

1. Put a query parameter in, like you said you didn't want to. This is about as easy to fake as HTTP_REFERER, which could hardly be called secure anyway. HTTP_REFERER is set less and less often anyway, as people block it with "security" software.

2. Define a global variable in JavaScript before including the remote script, a la AdSense.

3. If the times on the servers can be expected to be synchronised, or you have some other unique but changing value that both servers know about, get an MD5/SHA1 hash of that value with the affiliate ID appended on the end, and compare it at the other end.

Jasper

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