TCP Wrappers

Prentis Brooks
Thu Jun 27 13:17:00 GMT 2002

Either way, I am going to work on it.  It will be a good exercise in
creating DLL's for Cygwin.  My only concern is that I am not sure how
active the upstream maintainer is.  If you check the porcupine site, tcp
wrappers hasn't been modified since 1997.  Of course, not that many
changes have been introduced.  This may make the diff, we will see.

On Thu, 27 Jun 2002, Charles Wilson wrote:

> Corinna Vinschen wrote:
> > It clarifies.  I was just confused how inetd comes into play here.
> > 
> > Just consider that if the usage of a tcp wrappers dll actually
> > requires us to change sshd code, I'd better live with static linking.
> > libwrap.a isn't that big.
> All true.  However, if the API of libwrap needs to change in order to 
> support building shared libs on certain platforms (cygwin, native 
> windows), then that'll happen at the upstream tcp maintainer level.
> Which, IF he did that, would cause a ripple effect as the various 
> changes to client code were added all over the opensourcesphere. 
> Fortunately, given the .so versioning tools, this wouldn't break 
> existing builds of, say, openssh on linux.
> But to get this patch to the point where the upstream maintainer would 
> even consider it, someone "down here" -- like Prentis -- needs to 
> develop and test the patch.  (That's what I did w.r.t. ncurses, 
> readline, etc).  Then, push it upstream and see if it'll be accepted.
> Whether cygwin's version of openssh adapts to the dllized API or not is 
> of course up to Corinna.  (Although, this does present one problem: if 
> Corinna doesn't want to use the modified API, then Prentis will have to 
> maintain two APIs -- one for the DLL and one for the statlib, using 
> #ifndef WITH_LIBWRAP_DLL guards in tcpd.h....blech)
> --Chuck

Prentis Brooks	| | 703-265-0914 | AIM: PrentisBrooks
Senior System Administrator - Web Infrastructure & Security

       A knight is sworn to valor.  His heart knows only virtue.  His blade
       defends the helpless.  His word speaks only truth.  His wrath undoes
       the wicked. - the old code of Bowen, last of the dragonslayers

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