[Yarv-devel] Prevent operations in yarv

[Aureliano Calvo]

Hi all,
I'm trying to implement a security manager for ruby
like the java security manager. In order to achieve
it, I need to be able to selectively prevent some
things to ocurr:

* Method definition
* Method undefinition
* Method redefinition
* Constant definition
* Constant modification
* Constant undefinition
* Module/Class definition
* Module/Class modification
* Module/Class undefinition

I've tried to implement a "pure ruby" solution, but
I've found that it's impossible to prevent the
definition, redefinition and undefinition of a
constant and it's very very tricky to prevent the
other operations (for instance method redefinition can
be prevented by aliasing every method and overloading
the method_added method to go back to the original
implementation). 

What would be nice is for ruby to have built in
something like the feature described in
http://www.rubygarden.org/ruby?EventOrientedRuby.

Is it supported by yarv/rite?

Can something like it be implemented with a "pure
jarv" solution? (i.e. without modifying the
interpreter or adding C modules).

Thank you very much for your time,
Aureliano.


	


	
		
___________________________________________________________ 
1GB gratis, Antivirus y Antispam 
Correo Yahoo!, el mejor correo web del mundo 
http://correo.yahoo.com.ar