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From Jean-Baptiste Onofré ...@nanthrax.net>
Subject Re: Securing shell commands
Date Tue, 30 Oct 2012 11:25:13 GMT
Thanks for the update Guillaume and great job !

I gonna experiment (in combination with sub-shell) and extend to JMX, 
but it looks very good.

Thanks again,

On 10/30/2012 12:20 PM, Guillaume Nodet wrote:
> I've worked last week on a solution for KARAF-979, i.e. providing a way to
> secure shell commands.
> What I came up with is the following.
> A new simple authentication service, exposed as an OSGi service with the
> following interface
> public interface AuthorizationService {
>      void checkPermission(Subject subject, String permission);
>      boolean isPermitted(Subject subject, String permission);
> }
> This service would be used transparently by karaf commands by modifying the
> BlueprintCommand class and calling checkPermission with the current Subject
> and a permission which is
>     "command:" + [scope] + ":" + [command]
> Permissions can be set through ConfigAdmin using a single property which
> contains an xml which looks like:
>      <entries>
>         <entry permission="[xxx]" roles="[xxx]" type="add|set|modify" />
>         [ more entries ]
>      </entries>
> The matching is done by checking the permission given in the call to the
> AuthorizationService with the entries in the configuration.  Matching
> entries are used to compute the list of authorized roles and those roles
> are checked against the roles of the authenticated Subject.
> This mechanism is the same we had in ServiceMix 3.x.
> This allows to define permissions for a subshell or a single command.  It
> does not provide a very easy way to split read operations from write
> operations and this would have to be done in an example configuration maybe
> to ease the user task.
> That said, the mechanism is easily extensible and we can later add
> permissions for JMX access or any other part of Karaf that would benefit
> from that.
> Thoughts welcomed, as usual.

Jean-Baptiste Onofré
Talend - http://www.talend.com

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