auditing patch for samba

ThwartedEfforts abakun at thwartedefforts.org
Thu Feb 21 20:48:04 GMT 2002


On topic:
Well, if I have the time to mess with the samba code again (or have a 
need for auditing again) I'll research adding auditing with some kind of 
VFS-like hooks.  As far as I'm concerned, the VFS sample audit.c doesn't 
provide anything other than proof-of-concept auditing, nothing I'd use 
in a production environment (might as well read the debug logs for 
auditing information).  Can you give me a starting place in the code to 
learn about the new auth subsystem you've added (like I said, I've been 
away from the code for a while).

and off topic:
Andrew Bartlett wrote:

>>All this is academic though if you've already removed it and your new
>>auth scheme is in there and %U and %G still work all the time.  
>>
>They probably don't - but I won't allow another patch like that one into
>the tree if I can help it.  Its just too ugly.
>
>>I
>>suspose another solution to the macro expansion issue would be to
>>iterate over the vuser (?) array's elements and try expanding all macros
>>for each vuser connected.  I don't remember why this solution wasn't
>>used at the time.
>>
>I think I understand what it was for - and I still think its an ugly
>hack.
>
Oh, I fully agree, but it was the only way I could get the functionality 
I wanted (and the documented functionality at that -- the documentation 
actually said (at least at the time) to use %U and %G to do nifty things 
with allowing shares to appear based on username and group).  It did 
have too many trade offs though what with the machine account auth 
issues if it was turned on.  I suspect that perhaps Luke suggested that 
name because he didn't fully understand how it was different than the 
registry entry of the same name -- I'll leave that as an exercise for 
the reader though.

If %U and %G expansions can not be reliable, can that at least be 
documented?  The %U and %G macro expansions are useless unless you can 
predict their values through the entire logon session of a user, and you 
can't if NT is going to be browsing anonymously and samba rereads it's 
config files at every new (even virtual/multiplexed) connection.

Andy






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