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<H1>Re: [MUD-Dev] about MOO</H1>
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<LI><em>To</em>: <A HREF="mailto:mud-dev#kanga,nu">mud-dev#kanga,nu</A></LI>
<LI><em>Subject</em>: Re: [MUD-Dev] about MOO</LI>
<LI><em>From</em>: Greg Miller <<A HREF="mailto:gmiller#classic-games,com">gmiller#classic-games,com</A>></LI>
<LI><em>Date</em>: Mon, 22 Nov 1999 14:09:14 -0600</LI>
<LI><em>Reply-To</em>: <A HREF="mailto:mud-dev#kanga,nu">mud-dev#kanga,nu</A></LI>
<LI><em>Sender</em>: <A HREF="mailto:mud-dev-admin#kanga,nu">mud-dev-admin#kanga,nu</A></LI>
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<PRE>
Andru Luvisi wrote:
> Put simply: Whenever an object tries to do something restricted (ie read
> or write a file) your validator function (part of the mudlib in the two
> implementations I'm familiar with, Nightmare/Foundation and TubMud)
> examines the current call stack (the same one you'd see if you did a
> backtrace). The functions don't matter, only the objects. If *all* of
> the objects have the needed access, then the operation succeeds. If *any*
> of them fail, the operation fails. The only time the procedure is
> different is if an object specifically chooses to have *only* its access
> used for making the decision. In the implementations I've seen, there
This basically amounts to a capability system... Do a web search for
"capability system" and "eros" for a fairly detailed discussion of why
this approach works pretty well in many situations. (Eros is an
operating system that uses capabilities for its security rather than
user accounts).
--
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<LI><STRONG><A NAME="00438" HREF="msg00438.html">Re: [MUD-Dev] about MOO</A></STRONG>
<UL><LI><EM>From:</EM> Andru Luvisi <luvisi#andru,sonoma.edu></LI></UL></LI>
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<ul><li>Thread context:
<BLOCKQUOTE><UL>
<LI><strong><A NAME="00394" HREF="msg00394.html">[MUD-Dev] about MOO</A></strong>,
Ilya, Game Commandos <a href="mailto:Ilya#gamecommandos,com">Ilya#gamecommandos,com</a>, Fri 19 Nov 1999, 18:27 GMT
<UL>
<LI><strong><A NAME="00404" HREF="msg00404.html">Re: [MUD-Dev] about MOO</A></strong>,
Andru Luvisi <a href="mailto:luvisi#andru,sonoma.edu">luvisi#andru,sonoma.edu</a>, Fri 19 Nov 1999, 20:30 GMT
<UL>
<LI><strong><A NAME="00413" HREF="msg00413.html">Re: [MUD-Dev] about MOO</A></strong>,
Joey Hess <a href="mailto:joey#kitenet,net">joey#kitenet,net</a>, Sat 20 Nov 1999, 00:39 GMT
<UL>
<LI><strong><A NAME="00438" HREF="msg00438.html">Re: [MUD-Dev] about MOO</A></strong>,
Andru Luvisi <a href="mailto:luvisi#andru,sonoma.edu">luvisi#andru,sonoma.edu</a>, Mon 22 Nov 1999, 18:55 GMT
<UL>
<LI><strong><A NAME="00447" HREF="msg00447.html">Re: [MUD-Dev] about MOO</A></strong>,
Greg Miller <a href="mailto:gmiller#classic-games,com">gmiller#classic-games,com</a>, Mon 22 Nov 1999, 20:14 GMT
</LI>
</UL>
</LI>
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<LI><strong><A NAME="00405" HREF="msg00405.html">Re: [MUD-Dev] about MOO</A></strong>,
Dan Root <a href="mailto:dar#thekeep,org">dar#thekeep,org</a>, Fri 19 Nov 1999, 20:30 GMT
<UL>
<LI><strong><A NAME="00414" HREF="msg00414.html">Re: [MUD-Dev] about MOO</A></strong>,
Joey Hess <a href="mailto:joey#kitenet,net">joey#kitenet,net</a>, Sat 20 Nov 1999, 00:39 GMT
<UL>
<LI><strong><A NAME="00420" HREF="msg00420.html">Re: [MUD-Dev] about MOO</A></strong>,
Dan Root <a href="mailto:dar#thekeep,org">dar#thekeep,org</a>, Sat 20 Nov 1999, 01:43 GMT
<UL>
<LI><strong><A NAME="00428" HREF="msg00428.html">Re: [MUD-Dev] about MOO</A></strong>,
bruce <a href="mailto:bruce#puremagic,com">bruce#puremagic,com</a>, Sun 21 Nov 1999, 01:14 GMT
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