Squeak-e May 2003

squeak-e@lists.squeakfoundation.org

5 participants
3 discussions

What happened to our Swiki?
by Mark S. Miller 16 May '03

16 May '03

The current state is blank and locked, and from the history it looks like we've been terribly scribbled on. It seems the last good home page was Version 31, accessible at http://swiki.squeakfoundation.org/squeak-e/1.version?id=31 . Until we figure out how to reconcile the openness of a Wiki with protection from this kind of vandalism, could someone who has the password at least restore the home page to its version 31 state, but leave it locked? Thanks. On the figuring-out front, any ideas for a solution based on the capability security principles Squeak-E stands for? Perhaps using Tyler's style of capabilities as unguessable https URLs? ---------------------------------------- Text by me above is hereby placed in the public domain Cheers, --MarkM

5 5

Changes: Combex de-animates. MarkM moves E work to JHU and HP Labs
by Mark S. Miller 13 May '03

13 May '03

[cross posted to e-lang and squeak-e] First the bad news: Combex has run out of money, and has entered the corporate equivalent of cryonic suspension. MarcS is still looking for funds to re-animate it; so if you've got any leads, please contact him. Now the good news: Through the magic of open source, E has now survived three corporate sponsors. Jonathan Shapiro, a professor at Johns Hopkins University, talked me into enrolling there as a grad student, working towards a PhD, which I have done. My thesis will be E, and Shap is my thesis advisor. I will be making periodic trips to JHU, and I will be spending a semester out there at some point. But otherwise I remain in silicon valley, and am pursuing my degree by remote control. There seem to be many potential synergies between E and other research happening at JHU. Thanks to Alan Karp (thanks!!), I have now joined HP Labs as an Intern. This is a position designed for students, in which I'm expected to spend a good deal of my time working towards my degree -- in my case, working on E. My research will be directed by Alan Karp. I gather there are also many potential synergies between E and other research at HP Labs, but I'll know more soon. (But what are the other consequences of being interned at HP? If it's anything like being interned in Java or Lisp, my identity will soon become canonical. I will be all Mark Millers.) I will be travelling from now till 5/18. Monday 5/19 is my first day at HP. I expect to become active on our lists again starting then. ---------------------------------------- Text by me above is hereby placed in the public domain Cheers, --MarkM

2 1

capabilities question...
by Michael van der Gulik 12 May '03

12 May '03

Hi all. I'm reading that rather interesting paper about capabilities (and the myths thereof) on erights.org. I'm playing around with Squeak and researching how it could be distributed using replication etc. See dpon.sourceforge.net if you're interested. I may switch to E, but I'm just nosing around at the moment, and reading a lot. Question: it seems quite possible to implement ACL's using capabilities. Would this be true? Say for example that you have a secure object called 'Secret'. Other objects access 'Secret' through proxy objects. These proxy objects simply pass all messages through to Secret, and can be turned on and off, to allow and disallow (revoke) access to Secret. Now, assuming that some management system was built around this schema, each proxy object is quite like an item in an Access Control List. If an authentication mechanism was also provided for subjects, which was enforced by the proxies, then would there be any difference between this and another implementation of an ACL system? Michael.

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Squeak-e May 2003