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X-Authentication-Warning: magetower.office.aol.com: prentis owned process doing -bs
Date: Wed, 3 Apr 2002 14:54:13 -0500 (EST)
From: Prentis Brooks <prentis AT aol DOT net>
To: Charles Wilson <cwilson AT ece DOT gatech DOT edu>
cc: cygwin-apps AT cygwin DOT com
Subject: Re: TCP Wrappers
In-Reply-To: <3CAB4753.1090500@ece.gatech.edu>
Message-ID: <Pine.LNX.4.44.0204031454010.9773-100000@magetower.office.aol.com>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII

wheeee, I am going to have fun this weekend ;)


On Wed, 3 Apr 2002, Charles Wilson wrote:

> Mostly correct.  Unfortnately, libwrap is bad.  It uses an int 
> (allow_severity and deny_severity) that are expected to be defined in 
> the application (so, tcpd.h says 'extern int allow_severity').
> 
> This is okay in a static lib, but not in a DLL.  instead, stuff must be 
> changed around so that the library itself defines those variables, and 
> exports them to the applications -- AND the applications must NOT 
> declare them...which means patches to main() in tcpd, tcpdmatch, 
> safe-finger, etc.
> 
> And sshd.
> 
> --Chuck
> 
> Christopher Faylor wrote:
> 
> > On Wed, Apr 03, 2002 at 12:37:25PM -0500, Prentis Brooks wrote:
> > 
> >>I am willing to look into this, it currently does not use libtool, so I
> >>have a lot of mods to make that happen, if I understood cgf right.
> >>
> > 
> > I don't remember saying this.
> > 
> > It *should* be as simple as saying
> > 
> > gcc -Wl,--export-all-symbols -shared -o foo.dll -Wl,--out-implib,cygfoo.a *.o
> > 
> > but I guess it rarely is.
> > 
> > (I know the above is probably missing some crucial piece or other, I'm
> > just vaguely showing how it should work.)
> > 
> > cgf
> > 
> 
> 

-- 
Prentis Brooks	| prentis AT aol DOT net | 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