blocking C_WaitForSlotEvent()

Hello all,

The source of the pkcs11-global.c [1] says that the blocking call does 
not work in some pcsc-lite versions. From the git/svn history [2], the 
versions are before pcsc-lite 1.5.3, the changelog points more to the 
version 1.5.4 fixing various use cases of the SCardGetStatusChange() calls.

I tested with current pcsc-lite and with the condition removed and basic 
use case with waiting for slot status change from PKCS#11 in single 
thread worked flawlessly.

Is there something more needed than adding a check for pcsc-lite 1.6 in 
the configure scripts to allow this functionality again? Are there any 
test cases to make sure it works fine with Firefox for example?

[1] 
https://github.com/OpenSC/OpenSC/blob/master/src/pkcs11/pkcs11-global.c#L645
[2] 
https://github.com/OpenSC/OpenSC/commit/8af1b60afdad95f569279528ff96dda9d1d4e9f8
[3] 
https://alioth.debian.org/plugins/scmgit/cgi-bin/gitweb.cgi?p=pcsclite/PCSC.git;a=blob;f=ChangeLog;hb=HEAD#l535

Kind regards,

-- 
Jakub Jelen
Software Engineer
Security Technologies
Red Hat


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