Overview
| Comment: | Updated to workaround a bug in Google's PCSC implementation where SCardStatus() requires a reader parameter |
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| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
bf8001bc4214f087a3054e2ad1e867f7 |
| User & Date: | rkeene on 2016-02-26 18:42:30 |
| Other Links: | manifest | tags |
Context
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2016-02-26
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| 19:06 | ChromeOS: Renamed files to be more obvious check-in: 6f34302432 user: rkeene tags: trunk | |
| 18:42 | Updated to workaround a bug in Google's PCSC implementation where SCardStatus() requires a reader parameter check-in: bf8001bc42 user: rkeene tags: trunk | |
| 18:36 | Added additional debugging information for SCardTransmit() being done successfully check-in: 7272e3d08a user: rkeene tags: trunk | |
Changes
Modified cackey.c from [bf13559221] to [3a53605d32].
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*
*/
static cackey_ret cackey_token_present(struct cackey_slot *slot) {
cackey_ret pcsc_connect_ret;
DWORD reader_len = 0, state = 0, protocol = 0, atr_len;
BYTE atr[MAX_ATR_SIZE];
LONG status_ret, scard_reconn_ret;
LPSTR *reader_name;
CACKEY_DEBUG_PRINTF("Called.");
if (slot->internal) {
CACKEY_DEBUG_PRINTF("Returning token present (internal token)");
return(CACKEY_PCSC_S_TOKENPRESENT);
}
pcsc_connect_ret = cackey_connect_card(slot);
if (pcsc_connect_ret != CACKEY_PCSC_S_OK) {
CACKEY_DEBUG_PRINTF("Unable to connect to card, returning token absent");
return(CACKEY_PCSC_E_TOKENABSENT);
}
CACKEY_DEBUG_PRINTF("Calling SCardStatus() to determine card status");
atr_len = sizeof(atr);
status_ret = SCardStatus(slot->pcsc_card, NULL, &reader_len, &state, &protocol, atr, &atr_len);
if (status_ret == SCARD_E_INSUFFICIENT_BUFFER) {
CACKEY_DEBUG_PRINTF("ScardStatus() returned SCARD_E_INSUFFICIENT_BUFFER, assuming this is a bug (e.g., Google PCSC) implementation and retrying");
atr_len = sizeof(atr);
reader_len = 32768;
reader_name = malloc(reader_len);
status_ret = SCardStatus(slot->pcsc_card, reader_name, &reader_len, &state, &protocol, atr, &atr_len);
free(reader_name);
}
if (status_ret == SCARD_E_INVALID_HANDLE) {
CACKEY_DEBUG_PRINTF("SCardStatus() returned SCARD_E_INVALID_HANDLE, marking as not already connected and trying again");
cackey_mark_slot_reset(slot);
pcsc_connect_ret = cackey_connect_card(slot);
if (pcsc_connect_ret != CACKEY_PCSC_S_OK) {
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