CK_RV C_WaitForSlotEvent(CK_FLAGS flags, /* blocking/nonblocking flag */
CK_SLOT_ID_PTR pSlot, /* location that receives the slot ID */
CK_VOID_PTR pReserved) /* reserved. Should be NULL_PTR */
{
sc_reader_t *found;
unsigned int mask, events;
void *reader_states = NULL;
CK_SLOT_ID slot_id;
CK_RV rv;
int r;
if (pReserved != NULL_PTR)
return CKR_ARGUMENTS_BAD;
sc_log(context, "C_WaitForSlotEvent(block=%d)", !(flags & CKF_DONT_BLOCK));
/* Not all pcsc-lite versions implement consistently used functions as they are */
/* FIXME: add proper checking into build to check correct pcsc-lite version for SCardStatusChange/SCardCancel */
if (!(flags & CKF_DONT_BLOCK))
return CKR_FUNCTION_NOT_SUPPORTED;
rv = sc_pkcs11_lock();
if (rv != CKR_OK)
return rv;
mask = SC_EVENT_CARD_EVENTS;
/* Detect and add new slots for added readers v2.20 */
if (sc_pkcs11_conf.plug_and_play) {
mask |= SC_EVENT_READER_EVENTS;
}
rv = slot_find_changed(&slot_id, mask);
if ((rv == CKR_OK) || (flags & CKF_DONT_BLOCK))
goto out;
again:
sc_log(context, "C_WaitForSlotEvent() reader_states:%p", reader_states);
sc_pkcs11_unlock();
r = sc_wait_for_event(context, mask, &found, &events, -1, &reader_states);
if (sc_pkcs11_conf.plug_and_play && events & SC_EVENT_READER_ATTACHED) {
/* NSS/Firefox Triggers a C_GetSlotList(NULL) only if a slot ID is returned that it does not know yet
Change the first hotplug slot id on every call to make this happen. */
sc_pkcs11_slot_t *hotplug_slot = list_get_at(&virtual_slots, 0);
*pSlot= hotplug_slot->id -1;
rv = sc_pkcs11_lock();
if (rv != CKR_OK)
return rv;
goto out;
}
/* Was C_Finalize called ? */
if (in_finalize == 1)
return CKR_CRYPTOKI_NOT_INITIALIZED;
if ((rv = sc_pkcs11_lock()) != CKR_OK)
return rv;
if (r != SC_SUCCESS) {
sc_log(context, "sc_wait_for_event() returned %d\n", r);
rv = sc_to_cryptoki_error(r, "C_WaitForSlotEvent");
goto out;
}
/* If no changed slot was found (maybe an unsupported card
* was inserted/removed) then go waiting again */
rv = slot_find_changed(&slot_id, mask);
if (rv != CKR_OK)
goto again;
out:
if (pSlot)
*pSlot = slot_id;
/* Free allocated readers states holder */
if (reader_states) {
sc_log(context, "free reader states");
sc_wait_for_event(context, 0, NULL, NULL, -1, &reader_states);
}
sc_log(context, "C_WaitForSlotEvent() = %s", lookup_enum (RV_T, rv));
sc_pkcs11_unlock();
return rv;
}
CK_RV C_WaitForSlotEvent(CK_FLAGS flags, /* blocking/nonblocking flag */
CK_SLOT_ID_PTR pSlot, /* location that receives the slot ID */
CK_VOID_PTR pReserved) /* reserved. Should be NULL_PTR */
{
sc_reader_t *found;
unsigned int mask, events;
void *reader_states = NULL;
CK_SLOT_ID slot_id;
CK_RV rv;
int r;
if (pReserved != NULL_PTR)
return CKR_ARGUMENTS_BAD;
sc_log(context, "C_WaitForSlotEvent(block=%d)", !(flags & CKF_DONT_BLOCK));
#ifndef PCSCLITE_GOOD
/* Not all pcsc-lite versions implement consistently used functions as they are */
if (!(flags & CKF_DONT_BLOCK))
return CKR_FUNCTION_NOT_SUPPORTED;
#endif /* PCSCLITE_GOOD */
rv = sc_pkcs11_lock();
if (rv != CKR_OK)
return rv;
mask = SC_EVENT_CARD_EVENTS | SC_EVENT_READER_EVENTS;
/* Detect and add new slots for added readers v2.20 */
rv = slot_find_changed(&slot_id, mask);
if ((rv == CKR_OK) || (flags & CKF_DONT_BLOCK))
goto out;
again:
sc_log(context, "C_WaitForSlotEvent() reader_states:%p", reader_states);
sc_pkcs11_unlock();
r = sc_wait_for_event(context, mask, &found, &events, -1, &reader_states);
if (events & SC_EVENT_READER_ATTACHED) {
rv = sc_pkcs11_lock();
if (rv != CKR_OK)
return rv;
goto out;
}
/* Was C_Finalize called ? */
if (in_finalize == 1)
return CKR_CRYPTOKI_NOT_INITIALIZED;
if ((rv = sc_pkcs11_lock()) != CKR_OK)
return rv;
if (r != SC_SUCCESS) {
sc_log(context, "sc_wait_for_event() returned %d\n", r);
rv = sc_to_cryptoki_error(r, "C_WaitForSlotEvent");
goto out;
}
/* If no changed slot was found (maybe an unsupported card
* was inserted/removed) then go waiting again */
rv = slot_find_changed(&slot_id, mask);
if (rv != CKR_OK)
goto again;
out:
if (pSlot)
*pSlot = slot_id;
/* Free allocated readers states holder */
if (reader_states) {
sc_log(context, "free reader states");
sc_wait_for_event(context, 0, NULL, NULL, -1, &reader_states);
}
sc_log(context, "C_WaitForSlotEvent() = %s", lookup_enum (RV_T, rv));
sc_pkcs11_unlock();
return rv;
}
