Re: [Samba] %S Macro seems broken in default service

2013-06-07 Thread Andrew Bartlett
On Fri, 2013-06-07 at 14:37 -0600, Ty! Boyack wrote:

 Does anyone know if this is intentional, or a bug?  I don't see any 
 references to others having the problem, so I'm wondering if I've missed 
 something in the transition to 4.0 that needs to be done.

It's a bit of both.  See 
https://bugzilla.samba.org/show_bug.cgi?id=8935

That is, it wasn't anticipated that folks would use %S in this way, and
the change avoids clients being able to consume memory as we
re-interpret the service for each incoming name.

Andrew Bartlett

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Andrew Bartletthttp://samba.org/~abartlet/
Authentication Developer, Samba Team   http://samba.org


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Re: [Samba] %S Macro seems broken in default service

2013-06-07 Thread Ty! Boyack
That's great info -- thanks.  I will start following that bug report 
with great interest.


I can see where the issue is and how this could be a serious problem.  
It will be good to see how it is fixed.


One suggestion that I'll make both  here and over there (I don't know if 
you have any pull on this), is that this feature is documented in the 
4.0 man pages.  In smb.conf(5) it says:


Also note that the apparent service name will be changed to equal that 
of the requested service, this is very useful as it allows you to use 
macros like %S to make a wildcard service.


I'd like to see the feature available again (maybe with an understanding 
of risk that it can entail), but if not then that description should 
probably be struck from the documentation.


Thanks for the spot-on tip of where the bug is and the issues 
surrounding it!


-Ty!



On 06/07/2013 04:02 PM, Andrew Bartlett wrote:

On Fri, 2013-06-07 at 14:37 -0600, Ty! Boyack wrote:


Does anyone know if this is intentional, or a bug?  I don't see any
references to others having the problem, so I'm wondering if I've missed
something in the transition to 4.0 that needs to be done.

It's a bit of both.  See
https://bugzilla.samba.org/show_bug.cgi?id=8935

That is, it wasn't anticipated that folks would use %S in this way, and
the change avoids clients being able to consume memory as we
re-interpret the service for each incoming name.

Andrew Bartlett



--
-===-
  Ty Boyack
  NREL Senior IT Engineer
  ty.boy...@colostate.edu
  (970) 491-1186
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