workaround Mac OS X 10.10 PCSC bug; refs #34

src/pcsc.hxx

@@ -306,11 +306,32 @@ namespace pcsc {
             rPci.cbPciLength = sizeof(rPci);
             // log only in verbose debuggung; could log pins
             CRYPTOLOG_VERBOSE("SCardTransmit: "<<crypto::hex(in));
+            try {
               check(SCardTransmit(_id, &rPci,
                                   (LPCBYTE)in.c_str(),
                                   in.size(),
                                   0, buff, &len),
                     "smartcard transmit message "+crypto::hex(in));
+            } catch (...) {
+              // try to fix Apple's Mac OS X 10.10 implementation bug
+#             ifdef __APPLE__
+                /*! @bug Work around Mac OSX 10.10 bug. On Mac OSX
+                         10.10 there is a bug in PCSC: After a
+                         reconnect, first transaction (SCardTransmit)
+                         fails with SCARD_W_RESET_CARD
+                         (0x80100068). */
+                if (_status==SCARD_W_RESET_CARD) { // just resend once
+                  check(SCardTransmit(_id, &rPci,
+                                      (LPCBYTE)in.c_str(),
+                                      in.size(),
+                                      0, buff, &len),
+                        "smartcard transmit message "+crypto::hex(in));
+                  continue; // this time: success 
+                }
+#             else
+                throw; // just rethrow otherwise
+#             endif
+            }
             //CRYPTOLOG(" -> "<<crypto::hex(std::string((char*)buff, len)));
             return std::string((char*)buff, len);
           }