On Fri, 2011-02-11 at 15:16 -0600, Douglas E. Engert wrote:
> 
> On 2/11/2011 3:02 PM, Andre Zepezauer wrote:
> > On Fri, 2011-02-11 at 22:25 +0200, Martin Paljak wrote:
> >>>>>> Furthermore, any cardmod adjustments can be implemented and isolated
> >>>>>> with ifdef-s,
> >>>>>
> >>>>> The only #ifdef ENABLED_CARDMOD left is in ctx, and that could easily be
> >>>>> removed as it tests the app_name for "cardmod" (The cardmod/Makefile.am
> >>>>> has one to compile or not.)  That test for the app_name is needed today
> >>>>> because of the way the readers are initialized, and the cardmod looks
> >>>>> like a separate driver. This could change if the mods were merged better
> >>>>> in reader-pcsc.c
> >>>>
> >>>> As you said above, "The cardmod modifications to
> >>>> reader-pcsc for the most part turn off all these features, so they don't
> >>>> get accidentally executed and cause problems.".
> >>>>
> >>>>
> >>>> #ifdef-s in reader-pcsc.c are OK to assure those limitations.
> >>>> But those ifdef-s only should exist in reader-pcsc.c, as the only reader 
> >>>> driver the minidriver will know about is the pcsc driver. And to make it 
> >>>> very sure, if the codebase is compiled to produce minidriver DLL, the 
> >>>> extra ifdef-s will guarantee that those restrictions are enforced 
> >>>> (actually it should be assured by the minidriver code that nothing gets 
> >>>> called that would "confuse" reader-pcsc.c)
> >>>>
> >>>
> >>> I would still assume that the first thing a combined driver would do
> >>> would be to set a "use_provided_readers" or "cardmod_mode" flag so
> >>> "#ifdef"s are not used, but "if" statements are.
> >>>
> >>> This would allow the same build to be used for both cardmod and pkcs#11.
> >>
> >> If-s should suffice, I assume the same. Eventually #ifdef-s and a separate 
> >> compile could probably allow to reduce the overall binary dll size even 
> >> more.
> >
> > BTW: There was a _standalone_ reader-cardmod.c proposed on Monday. It
> > uses the 'init' function to pass in the handles. Making 'init' a stub
> > and using its body for the new 'use_reader' function should be enough to
> > make it work with current trunk.
> 
> Have you tried this?

Yep, but not with BaseCSP.

"Additionally a stripped down reader-pcsc (renamed to reader-cardmod) is
attached. It works well with a modified version of opensc-pkcs11.so and
should work in the same way for cardmod. Integration into the build
system is still required and possibly some debugging."

> >
> > The only thing that could be shared with the original reader-pcsc.c is
> > 'transmit'. And even that could be re-written from scratch if closer
> > coupling to the underlying platform is required.
> >
> > Regards
> > Andre
> >
> > http://www.opensc-project.org/pipermail/opensc-devel/2011-February/015910.html
> > http://www.opensc-project.org/pipermail/opensc-devel/attachments/20110207/5b57cb23/attachment-0001.c
> >
> >
> >
> 

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