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From Stephen McConnell <mcconn...@apache.org>
Subject [security] general updates
Date Fri, 27 Feb 2004 23:00:41 GMT

Over the last few days I have committed a bunch of updates to the 
repository, activation, and composition package that enable the following:

  * Declaration in a kernel configuration of a bunch of permissions
    granted by a system to a runtime.  The permissions assigned by the
    kernel are accessible though the SystemContext (available to all
    model implementations).  E.g.

      SystemContext system = context.getSystemContext();
      SecurityModel security = system.getSecurityModel();
      Permission[] permissions = security.getPermissions();

  * the ability to declare requested permissions on a component using
    an @avalon.security.permission tag.  These permission are exposed
    on a component Type instance.  For example:

      Type type = componentModel.getType();
      SecurityDescriptor security = type.getSecurity();
      PermissionDescriptor[] permissions =
        security.getPermissions();

The next item on the agenda is to establish a deployment failure when 
the available permissions do not encompass the permissions requested by 
a component.

Following this we will need to introduce the ability to declare 
overriding security profiles via a local system configuration (override 
targets).  This is partly in place but still needs a little more work to 
integrate the solution into the class loader model creation methods. 
Also I'm interested in getting in place permission profiles (suggested 
by Niclas) so that we can more easily manage different security scenarios.

Cheers, Stephen.

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