Overview
| Comment: | Updated transactional support to recursive transactions |
|---|---|
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| SHA1: |
43170e1dd99babbfe0a27ad35c71934d |
| User & Date: | rkeene on 2010-05-14 03:28:41 |
| Other Links: | manifest | tags |
Context
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2010-05-14
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| 03:32 | Updated transaction support check-in: c2e40da095 user: rkeene tags: trunk | |
| 03:28 | Updated transactional support to recursive transactions check-in: 43170e1dd9 user: rkeene tags: trunk | |
| 02:34 | Put all calls to functions that talk to the smartcard inside the big global mutex check-in: da2b17a36c user: rkeene tags: trunk | |
Changes
Modified cackey.c from [38178200a5] to [0fee951b43].
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struct cackey_slot {
int active;
char *pcsc_reader;
int pcsc_card_connected;
SCARDHANDLE pcsc_card;
int transaction_depth;
};
typedef enum {
CACKEY_TLV_APP_GENERIC = 0x01,
CACKEY_TLV_APP_SKI = 0x02,
CACKEY_TLV_APP_PKI = 0x04
} cackey_tlv_apptype;
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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);
}
slot->pcsc_card_connected = 1;
slot->transaction_depth = 0;
}
return(CACKEY_PCSC_S_OK);
}
/*
* SYNPOSIS
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cackey_conn_ret = cackey_connect_card(slot);
if (cackey_conn_ret != CACKEY_PCSC_S_OK) {
CACKEY_DEBUG_PRINTF("Unable to connect to card, returning in error");
return(CACKEY_PCSC_E_GENERIC);
}
slot->transaction_depth++;
if (slot->transaction_depth > 1) {
CACKEY_DEBUG_PRINTF("Already in a transaction, performing no action (new depth = %i)", slot->transaction_depth);
return(CACKEY_PCSC_S_OK);
}
scard_trans_ret = SCardBeginTransaction(slot->pcsc_card);
if (scard_trans_ret != SCARD_S_SUCCESS) {
CACKEY_DEBUG_PRINTF("Unable to begin transaction, returning in error");
return(CACKEY_PCSC_E_GENERIC);
}
CACKEY_DEBUG_PRINTF("Sucessfully began transaction on slot (%s)", slot->pcsc_reader);
return(CACKEY_PCSC_S_OK);
}
/*
* SYNPOSIS
* cackey_ret cackey_end_transaction(struct cackey_slot *slot);
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CACKEY_DEBUG_PRINTF("Called.");
if (!slot->pcsc_card_connected) {
CACKEY_DEBUG_PRINTF("Card is not connected, unable to end transaction");
return(CACKEY_PCSC_E_GENERIC);
}
if (slot->transaction_depth == 0) {
CACKEY_DEBUG_PRINTF("Terminating a transaction that has not begun!");
return(CACKEY_PCSC_E_GENERIC);
}
slot->transaction_depth--;
if (slot->transaction_depth > 0) {
CACKEY_DEBUG_PRINTF("Transactions still in progress, not terminating on-card Transaction (current depth = %i)", slot->transaction_depth);
return(CACKEY_PCSC_E_GENERIC);
}
scard_trans_ret = SCardEndTransaction(slot->pcsc_card, SCARD_LEAVE_CARD);
if (scard_trans_ret != SCARD_S_SUCCESS) {
CACKEY_DEBUG_PRINTF("Unable to end transaction, returning in error");
return(CACKEY_PCSC_E_GENERIC);
}
CACKEY_DEBUG_PRINTF("Sucessfully terminated transaction on slot (%s)", slot->pcsc_reader);
return(CACKEY_PCSC_S_OK);
}
/* APDU Related Functions */
/*
* SYNPOSIS
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xmit_buf[xmit_len++] = data[idx];
}
}
if (le != 0x00) {
xmit_buf[xmit_len++] = le;
}
/* Begin Smartcard Transaction */
cackey_begin_transaction(slot);
CACKEY_DEBUG_PRINTBUF("Sending APDU:", xmit_buf, xmit_len);
recv_len = sizeof(recv_buf);
scard_xmit_ret = SCardTransmit(slot->pcsc_card, SCARD_PCI_T0, xmit_buf, xmit_len, SCARD_PCI_T1, recv_buf, &recv_len);
if (scard_xmit_ret != SCARD_S_SUCCESS) {
CACKEY_DEBUG_PRINTF("Failed to send APDU to card (SCardTransmit() = %s/%lx)", CACKEY_DEBUG_FUNC_SCARDERR_TO_STR(scard_xmit_ret), (unsigned long) scard_xmit_ret);
slot->transaction_depth = 0;
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_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");
scard_xmit_ret = SCardTransmit(slot->pcsc_card, SCARD_PCI_T0, xmit_buf, xmit_len, SCARD_PCI_T0, 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);
slot->pcsc_card_connected = 0;
/* End Smartcard Transaction */
slot->transaction_depth = 1;
cackey_end_transaction(slot);
return(CACKEY_PCSC_E_GENERIC);
}
} else {
CACKEY_DEBUG_PRINTF("Disconnecting card");
SCardDisconnect(slot->pcsc_card, SCARD_RESET_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_GENERIC);
}
} else {
CACKEY_DEBUG_PRINTF("Disconnecting card");
SCardDisconnect(slot->pcsc_card, SCARD_RESET_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_GENERIC);
}
}
CACKEY_DEBUG_PRINTBUF("Returned Value:", recv_buf, recv_len);
if (recv_len < 2) {
/* Minimal response length is 2 bytes, returning in failure */
CACKEY_DEBUG_PRINTF("Response too small, returning in failure (recv_len = %lu)", (unsigned long) recv_len);
/* End Smartcard Transaction */
cackey_end_transaction(slot);
return(CACKEY_PCSC_E_GENERIC);
}
/* Determine result code */
major_rc = recv_buf[recv_len - 2];
minor_rc = recv_buf[recv_len - 1];
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if (major_rc == 0x61) {
/* We need to READ */
CACKEY_DEBUG_PRINTF("Buffer read required");
pcsc_getresp_ret = cackey_send_apdu(slot, GSCIS_CLASS_ISO7816, GSCIS_INSTR_GET_RESPONSE, 0x00, 0x00, 0, NULL, minor_rc, respcode, respdata, &tmp_respdata_len);
if (pcsc_getresp_ret != CACKEY_PCSC_S_OK) {
CACKEY_DEBUG_PRINTF("Buffer read failed! Returning in failure");
/* End Smartcard Transaction */
cackey_end_transaction(slot);
return(CACKEY_PCSC_E_GENERIC);
}
if (respdata_len) {
*respdata_len += tmp_respdata_len;
}
/* End Smartcard Transaction */
cackey_end_transaction(slot);
CACKEY_DEBUG_PRINTF("Returning in success (buffer read complete)");
return(CACKEY_PCSC_S_OK);
}
/* End Smartcard Transaction */
cackey_end_transaction(slot);
if (major_rc == 0x90) {
/* Success */
CACKEY_DEBUG_PRINTF("Returning in success (major_rc = 0x90)");
return(CACKEY_PCSC_S_OK);
}
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*/
static struct cackey_pcsc_identity *cackey_read_certs(struct cackey_slot *slot, struct cackey_pcsc_identity *certs, unsigned long *count) {
struct cackey_pcsc_identity *curr_id;
struct cackey_tlv_entity *ccc_tlv, *ccc_curr, *app_tlv, *app_curr;
unsigned char ccc_aid[] = {GSCIS_AID_CCC};
unsigned char curr_aid[7];
unsigned long outidx = 0;
cackey_ret transaction_ret;
int certs_resizable;
int send_ret, select_ret;
CACKEY_DEBUG_PRINTF("Called.");
if (count == NULL) {
CACKEY_DEBUG_PRINTF("count is NULL, returning in failure");
return(NULL);
}
if (*count == 0) {
if (certs != NULL) {
CACKEY_DEBUG_PRINTF("Requested we return 0 objects, short-circuit");
return(certs);
}
}
/* Begin a SmartCard transaction */
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