Subj : JSPrincipals...
To   : netscape.public.mozilla.jseng
From : Oystein Hallaraker
Date : Wed Jun 02 2004 01:03 pm

Hi!
I have a couple of questions:

1. I am a bit confused about how spidermonkey uses the JSPrincipals that
are sent to the engine through the api call
JS_EvaluateStringForPrincipals(). When does spidermonkey use this
information? Is that information only used when spidermonkey calls
native() (in js_Invoke()) so that the DOM can enforce the same origin
policy?
And I have been trying to understand the native() call. I understand
that it is a function pointer, but where are the actual functions that
are beeing called implemented?

2. I am trying to get the url of the executing script in the function
js_Invoke(). If I understand it correctly, this information is included
in the JSScript which is being executed. But how do I get the JSScript
from the JSContext? Is it possible to get the url of origin of a script
in js_Invoke()? I have been told earlier that spidermonkey dosn't
concern itself with the origin of javascripts and that it is the DOM
that is responsible for doing access control. But since the JSPrincipals
of a script is sent to the engine, it must be possible to extraxt this
information in js_Invoke?

3. Is calls to native() the only way which script executing in
spidermonkey can access(set or get properties) the DOM?

Some help would be greatly appreciated!

Oystein

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