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erlang-pcsc's Issues

[warning] got pcsc_reader_error: {error,{pcsc_error,-2146435026,no_readers,"Cannot find a smart card reader."}}; restarted ok

When no smart card reader is connected I get (using rebar3 shell):

$ rebar3 shell
===> Verifying dependencies...
===> Analyzing applications...
===> Compiling blog
Erlang/OTP 24 [erts-12.3.1] [source] [64-bit] [smp:4:4] [ds:4:4:10] [async-threads:1] [jit]

Eshell V12.3.1  (abort with ^G)
1> ===> Booted syntax_tools
===> Booted compiler
===> Booted goldrush
===> Booted lager
===> Booted pcsc
===> Booted blog
16:51:31.667 [warning] got pcsc_reader_error: {error,{pcsc_error,-2146435026,no_readers,"Cannot find a smart card reader."}}; restarted ok
16:51:31.721 [warning] got pcsc_reader_error: {error,{pcsc_error,-2146435026,no_readers,"Cannot find a smart card reader."}}; restarted ok
16:51:31.775 [warning] got pcsc_reader_error: {error,{pcsc_error,-2146435026,no_readers,"Cannot find a smart card reader."}}; restarted ok
16:51:31.831 [warning] got pcsc_reader_error: {error,{pcsc_error,-2146435026,no_readers,"Cannot find a smart card reader."}}; restarted ok
16:51:31.887 [warning] got pcsc_reader_error: {error,{pcsc_error,-2146435026,no_readers,"Cannot find a smart card reader."}}; restarted ok
16:51:31.945 [warning] got pcsc_reader_error: {error,{pcsc_error,-2146435026,no_readers,"Cannot find a smart card reader."}}; restarted ok
16:51:32.008 [warning] got pcsc_reader_error: {error,{pcsc_error,-2146435026,no_readers,"Cannot find a smart card reader."}}; restarted ok

Error -2146435026 is SCARD_E_NO_READERS_AVAILABLE and is not really an error.

If I connect a smart card reader the warning/error is no more present, as expected.

Maybe you should filter this error that is not really an error and do not log the warning message?

Trouble with Ubuntu

I'm trying to compile this NIF and it's throwing the error that

 fatal error: wintypes.h: No such file or directory
   43 | #include <wintypes.h>
      |          ^~~~~~~~~~~~

I already have libpcsclite-dev installed in my system but it's in /usr/includes/PCSC anyway for me to add this folder to the includes for the compile?

beam crash when pcscd is not running

when there is no pcscd is running to connect to (or whenever SCardEstablishContext(...)in pcsc_nif_new_context(...) returns something other than SCARD_S_SUCCESS), the enif_release_resource(ctx) call will lead to pcsc_nif_ctx_dtor() being run.
Since the ctx->pnc_mtx has not been created yet, trying to lock it does crash the beam vm:

Fatal error in erl_drv_mutex_lock(): Invalid argument [22]
Abort trap (core dumped)

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