On Sun, Apr 23, 2017 at 8:33 PM, phil@highoctane.be <phil@highoctane.be> wrote:
But what makes Pharo nice is also that there are no such limitations.
There are security things in Pharo, like disabling socket acces etc. Maybe putting the VM in a true sandbox would be more adequate. That can be done in a lot of ways at the OS level. Think containers.
Phil
But that doesn't help us take over the world with *everyone* working within the Giant-Single-Galactic-Image. mhahHaHaHAhaaaaa.... cheers -ben
On Sun, Apr 23, 2017 at 1:33 PM, Guillermo Polito <guillermopolito@gmail.com> wrote:
Generally speaking, and from my understanding, you will not be able to do:
SomeClass compile: 'initialize MyEvilHack dostuff. ^ super initialize '
In newspeak.
And that's because you are not able to do:
SomeClass compile: '...'
Newspeak uses object capabilities, and following those principles, you will only be able to compile and install code in a class, if somebody gives you a capability to do so.
Then, the problem is that right now Pharo's reflective API is convoluted with the base API, and thus from any piece of code you can do e.g.,:
anyObject superclass superclass allSubclasses...
A possible solution to this is to separate the reflective API from the base API.
On Sun, Apr 23, 2017 at 9:16 AM, Ben Coman <btc@openinworld.com> wrote:
On Thu, Apr 13, 2017 at 3:54 PM, Denis Kudriashov <dionisiydk@gmail.com> wrote:
2017-04-12 18:32 GMT+02:00 Ben Coman <btc@openinworld.com>:
If you want hostile actors working directly within the Image with a full environment, then Pharo is probably not suitable. Its easy to get hold of global class from the Playground references and overwrite/compile any method in the system like this...
SomeClass compile: 'initialize MyEvilHack dostuff. ^ super initialize '
You might want to consider Newspeak, which runs on the same VM as Pharo and has a focus on security.
Interesting how they address your example?
Not a direct response, but in Newspeak forum I see Gliad [1] respond to LaeMing... "Newspeak (note the capitalization) fits with your concerns around security and asynchrony, though the reality needs work. The main implementation runs on Smalltalk and as such is insecurable. There are less complete implementations based on compiling to Javascript and to the Truffle VM, and Ryan's Psoup VM, which is probably the most compliant version."
[1] https://groups.google.com/forum/#!searchin/newspeaklanguage/laeming%7Csort:r...
cheers -ben