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Comment:Updated to work around issues with loss of connectivity to PC/SC

Updated to re-power card if needed

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SHA1: 55457b92ffb5fb84a80a09e14e2085c91dff0c23
User & Date: rkeene on 2010-06-03 22:58:00
Other Links: manifest | tags
Context
2010-06-03
23:34
CACKey 0.5.10 check-in: d1b2e5ea57 user: rkeene tags: 0.5.10, trunk
22:58
Updated to work around issues with loss of connectivity to PC/SC

Updated to re-power card if needed check-in: 55457b92ff user: rkeene tags: trunk

19:16
Corrected issues with compiling without zlib support check-in: bd8ec23325 user: rkeene tags: trunk
Changes
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Modified cackey.c from [1e8e0d368b] to [67b5263486].

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		return(CACKEY_PCSC_E_GENERIC);
	}

	/* Connect to reader, if needed */
	if (!slot->pcsc_card_connected) {
		CACKEY_DEBUG_PRINTF("SCardConnect(%s) called", slot->pcsc_reader);
		scard_conn_ret = SCardConnect(*cackey_pcsc_handle, slot->pcsc_reader, SCARD_SHARE_SHARED, SCARD_PROTOCOL_T0 | SCARD_PROTOCOL_T1, &slot->pcsc_card, &protocol);
		scard_conn_ret = SCardConnect(*cackey_pcsc_handle, slot->pcsc_reader, SCARD_SHARE_SHARED, SCARD_PROTOCOL_T0, &slot->pcsc_card, &protocol);

		if (scard_conn_ret == SCARD_W_UNPOWERED_CARD) {
			scard_conn_ret = SCardConnect(*cackey_pcsc_handle, slot->pcsc_reader, SCARD_SHARE_DIRECT, SCARD_PROTOCOL_T0, &slot->pcsc_card, &protocol);
			scard_conn_ret = SCardReconnect(slot->pcsc_card, SCARD_SHARE_SHARED, SCARD_PROTOCOL_T0, SCARD_RESET_CARD, &protocol);
		}

		if (scard_conn_ret != SCARD_S_SUCCESS) {
			CACKEY_DEBUG_PRINTF("Connection to card failed, returning in failure (SCardConnect() = %s/%li)", CACKEY_DEBUG_FUNC_SCARDERR_TO_STR(scard_conn_ret), (long) scard_conn_ret);

			return(CACKEY_PCSC_E_GENERIC);
		}
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		slot->transaction_depth = 0;
		slot->slot_reset = 1;

		if (scard_xmit_ret == SCARD_W_RESET_CARD) {
			CACKEY_DEBUG_PRINTF("Reset required, please hold...");

			scard_reconn_ret = SCardReconnect(slot->pcsc_card, SCARD_SHARE_SHARED, SCARD_PROTOCOL_T0 | SCARD_PROTOCOL_T1, SCARD_RESET_CARD, &protocol);
			scard_reconn_ret = SCardReconnect(slot->pcsc_card, SCARD_SHARE_SHARED, SCARD_PROTOCOL_T0, SCARD_RESET_CARD, &protocol);
			if (scard_reconn_ret == SCARD_S_SUCCESS) {
				/* Re-establish transaction, if it was present */
				if (slot->transaction_depth > 0) {
					slot->transaction_depth--;
					cackey_begin_transaction(slot);
				}

				CACKEY_DEBUG_PRINTF("Reset successful, retransmitting");

				recv_len = sizeof(recv_buf);
				scard_xmit_ret = SCardTransmit(slot->pcsc_card, SCARD_PCI_T0, xmit_buf, xmit_len, NULL, recv_buf, &recv_len);

				if (scard_xmit_ret != SCARD_S_SUCCESS) {
					CACKEY_DEBUG_PRINTF("Retransmit failed, returning in failure after disconnecting the card (SCardTransmit = %s/%li)", CACKEY_DEBUG_FUNC_SCARDERR_TO_STR(scard_xmit_ret), (long) scard_xmit_ret);

					SCardDisconnect(slot->pcsc_card, SCARD_RESET_CARD);
					SCardDisconnect(slot->pcsc_card, SCARD_LEAVE_CARD);
					slot->pcsc_card_connected = 0;

					/* End Smartcard Transaction */
					slot->transaction_depth = 1;
					cackey_end_transaction(slot);

					return(CACKEY_PCSC_E_TOKENABSENT);
				}
			} else {
				CACKEY_DEBUG_PRINTF("Disconnecting card");

				SCardDisconnect(slot->pcsc_card, SCARD_RESET_CARD);
				SCardDisconnect(slot->pcsc_card, SCARD_LEAVE_CARD);
				slot->pcsc_card_connected = 0;

				/* End Smartcard Transaction */
				slot->transaction_depth = 1;
				cackey_end_transaction(slot);

				CACKEY_DEBUG_PRINTF("Returning in failure");
				return(CACKEY_PCSC_E_TOKENABSENT);
			}
		} else {
			CACKEY_DEBUG_PRINTF("Disconnecting card");

			SCardDisconnect(slot->pcsc_card, SCARD_RESET_CARD);
			SCardDisconnect(slot->pcsc_card, SCARD_LEAVE_CARD);
			slot->pcsc_card_connected = 0;

			/* End Smartcard Transaction */
			slot->transaction_depth = 1;
			cackey_end_transaction(slot);

			CACKEY_DEBUG_PRINTF("Returning in failure");
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		CACKEY_DEBUG_PRINTF("Connection to PC/SC failed, assuming no slots");

		slot_count = 0;
	} else {
		pcsc_readers_len = 0;

		scard_listreaders_ret = SCardListReaders(*cackey_pcsc_handle, NULL, NULL, &pcsc_readers_len);

		if (scard_listreaders_ret == SCARD_F_COMM_ERROR) {
			CACKEY_DEBUG_PRINTF("Error. SCardListReaders() returned SCARD_F_COMM_ERROR, assuming Connection to PC/SC went away. Reconnecting.");

			cackey_pcsc_disconnect();
			cackey_pcsc_connect();

			CACKEY_DEBUG_PRINTF("Trying SCardListReaders() again");
			scard_listreaders_ret = SCardListReaders(*cackey_pcsc_handle, NULL, NULL, &pcsc_readers_len);
		}

		if (scard_listreaders_ret == SCARD_S_SUCCESS && pcsc_readers_len != 0) {
			pcsc_readers = malloc(pcsc_readers_len);
			pcsc_readers_s = pcsc_readers;

			scard_listreaders_ret = SCardListReaders(*cackey_pcsc_handle, NULL, pcsc_readers, &pcsc_readers_len);
			if (scard_listreaders_ret == SCARD_S_SUCCESS) {
				pcsc_readers_e = pcsc_readers + pcsc_readers_len;
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