Re: System.getProperty & SecurityManager

[Michael Koch]

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Am Donnerstag, 15. April 2004 20:10 schrieb Tom Tromey:
> >>>>> "Ewout" == Ewout Prangsma <address@hidden> writes:
>
> Ewout> I've noticed lots of System.getProperty calls in classpath.
> Ewout> These calls can throw security exceptions when a security
> Ewout> manager is active.
>
> Ewout> To avoid this wrap the getProperty call in a
> Ewout> PrivilegedAction. I've written some helper classes to avoid
> Ewout> retyping that every time. I'm happy to send them.
>
> Ewout> PS. The security manager also causes other issues, but
> Ewout> getProperty is most frequent.
>
> The security manager code hasn't been used very much.  It's great
> that you're trying this out.  We're definitely interested in
> patches to wrap these calls.  In some cases it would also be good
> to just cache the result...

Caching can be dangerous because the SecurityManager may decide 
differently depending on who called a method, or the SecurityManager 
may hav changed totally ... This has to be carefully thought out.


Michael
- -- 
Homepage: http://www.worldforge.org/
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