[Ironruby-core] Safe Level checking

Peter Bacon Darwin bacondarwin at googlemail.com
Sun Apr 6 14:13:03 EDT 2008


OK that makes sense.  Does it apply to tainting objects too?

Pete

 

From: ironruby-core-bounces at rubyforge.org
[mailto:ironruby-core-bounces at rubyforge.org] On Behalf Of Tomas Matousek
Sent: Sunday,06 April 06, 2008 17:25
To: ironruby-core at rubyforge.org
Subject: Re: [Ironruby-core] Safe Level checking

 

We don't care about safe level now, so you can just ignore it. I doubt it is
necessary to implement this feature at all. IronRuby doesn't contain any
unsafe code. Hence CLR checks are always present regardless of what we
check, so your code cannot do anything that is disallowed by CLR security
system. We can only disable Ruby calls to some methods.  And that would be a
real security restriction only in a mode that would disable all .NET calls,
because otherwise you could always call your C# code that performs the call.

 

Tomas

 

From: ironruby-core-bounces at rubyforge.org
[mailto:ironruby-core-bounces at rubyforge.org] On Behalf Of Peter Bacon Darwin
Sent: Sunday, April 06, 2008 6:47 AM
To: ironruby-core at rubyforge.org
Subject: [Ironruby-core] Safe Level checking

 

The Sockets library does a lot of Security checking, i.e. Is the SafeLevel
too high for this action. It may be helpful to be able to specify this kind
of thing as an attribute on the method.

Something like:

 

        [RubyMethod("getsockopt")]

        [RubySafeLevel(2)]

        public static MutableString GetSocketOption(CodeContext/*!*/
context, RubyBasicSocket/*!*/ self, object/*Numeric*/ level,
object/*Numeric*/ optname) {

  

Rather than:

 

        [RubyMethod("getsockopt")]

        public static MutableString GetSocketOption(CodeContext/*!*/
context, RubyBasicSocket/*!*/ self, object/*Numeric*/ level,
object/*Numeric*/ optname) {

            Protocols.CheckSafeLevel(context, 2, "getsockopt");

            ...

        }

 

Or maybe even more cleverly integrate it into the .NET security permissions
attributes.

What do you think?

Pete

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