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Code Activity

scd: Fix GetSlotStatus.

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* scd/apdu.c (get_status_reader): Add ON_WIRE arg, here.
(ct_get_status, pcsc_get_status_direct, pcsc_get_status_wrapped)
(pcsc_get_status, get_status_ccid, my_rapdu_get_status): Likewise.
(reset_pcsc_reader_wrapped, open_pcsc_reader_wrapped): Follow the
change.
(apdu_get_status_internal): It's lower-level driver which judge
it's not needed.  Otherwise, it can't detect the removal.
* scd/ccid-driver.c (ccid_slot_status): After the POWERED_OFF check,
we can skip sending GetSlotStatus packet on wire, when no need.

Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
Fixes-commit: c8eee4d396a751d41fd1ee1e1b87b851fca172a
This commit is contained in:
NIIBE Yutaka 2017-01-30 09:30:32 +09:00
parent 7c8eee4d39
commit 2a025039c1
3 changed files with 31 additions and 29 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

44
scd/apdu.c
View File

@ -109,7 +109,7 @@ struct reader_table_s {
int (*disconnect_card)(int);
int (*close_reader)(int);
int (*reset_reader)(int);
int (*get_status_reader)(int, unsigned int *);
int (*get_status_reader)(int, unsigned int *, int);
int (*send_apdu_reader)(int,unsigned char *,size_t,
unsigned char *, size_t *, pininfo_t *);
int (*check_pinpad)(int, int, pininfo_t *);
@ -365,7 +365,7 @@ long (* DLSTDCALL pcsc_control) (long card,
/* Prototypes. */
static int pcsc_vendor_specific_init (int slot);
static int pcsc_get_status (int slot, unsigned int *status);
static int pcsc_get_status (int slot, unsigned int *status, int on_wire);
static int reset_pcsc_reader (int slot);
static int apdu_get_status_internal (int slot, int hang, unsigned int *status,
int on_wire);
@ -665,9 +665,10 @@ reset_ct_reader (int slot)
static int
ct_get_status (int slot, unsigned int *status)
ct_get_status (int slot, unsigned int *status, int on_wire)
{
(void)slot;
(void)on_wire;
/* The status we returned is wrong but we don't care because ctAPI
is not anymore required. */
*status = APDU_CARD_USABLE|APDU_CARD_PRESENT|APDU_CARD_ACTIVE;
@ -929,11 +930,12 @@ dump_pcsc_reader_status (int slot)
#ifndef NEED_PCSC_WRAPPER
static int
pcsc_get_status_direct (int slot, unsigned int *status)
pcsc_get_status_direct (int slot, unsigned int *status, int on_wire)
{
long err;
struct pcsc_readerstate_s rdrstates[1];
(void)on_wire;
memset (rdrstates, 0, sizeof *rdrstates);
rdrstates[0].reader = reader_table[slot].rdrname;
rdrstates[0].current_state = PCSC_STATE_UNAWARE;
@ -992,7 +994,7 @@ pcsc_get_status_direct (int slot, unsigned int *status)
#ifdef NEED_PCSC_WRAPPER
static int
pcsc_get_status_wrapped (int slot, unsigned int *status)
pcsc_get_status_wrapped (int slot, unsigned int *status, int on_wire)
{
long err;
reader_table_t slotp;
@ -1002,6 +1004,7 @@ pcsc_get_status_wrapped (int slot, unsigned int *status)
unsigned char buffer[16];
int sw = SW_HOST_CARD_IO_ERROR;
(void)on_wire;
slotp = reader_table + slot;
if (slotp->pcsc.req_fd == -1
@ -1101,12 +1104,12 @@ pcsc_get_status_wrapped (int slot, unsigned int *status)
static int
pcsc_get_status (int slot, unsigned int *status)
pcsc_get_status (int slot, unsigned int *status, int on_wire)
{
#ifdef NEED_PCSC_WRAPPER
return pcsc_get_status_wrapped (slot, status);
return pcsc_get_status_wrapped (slot, status, on_wire);
#else
return pcsc_get_status_direct (slot, status);
return pcsc_get_status_direct (slot, status, on_wire);
#endif
}
@ -1705,7 +1708,7 @@ reset_pcsc_reader_wrapped (int slot)
slotp->atrlen = len;
/* Read the status so that IS_T0 will be set. */
pcsc_get_status (slot, &dummy_status);
pcsc_get_status (slot, &dummy_status, 1);
return 0;
@ -2184,7 +2187,7 @@ open_pcsc_reader_wrapped (const char *portstr)
pcsc_vendor_specific_init (slot);
/* Read the status so that IS_T0 will be set. */
pcsc_get_status (slot, &dummy_status);
pcsc_get_status (slot, &dummy_status, 1);
dump_reader_status (slot);
unlock_slot (slot);
@ -2471,12 +2474,12 @@ set_progress_cb_ccid_reader (int slot, gcry_handler_progress_t cb, void *cb_arg)
static int
get_status_ccid (int slot, unsigned int *status)
get_status_ccid (int slot, unsigned int *status, int on_wire)
{
int rc;
int bits;
rc = ccid_slot_status (reader_table[slot].ccid.handle, &bits);
rc = ccid_slot_status (reader_table[slot].ccid.handle, &bits, on_wire);
if (rc)
return rc;
@ -2718,13 +2721,14 @@ reset_rapdu_reader (int slot)
static int
my_rapdu_get_status (int slot, unsigned int *status)
my_rapdu_get_status (int slot, unsigned int *status, int on_wire)
{
int err;
reader_table_t slotp;
rapdu_msg_t msg = NULL;
int oldslot;
(void)on_wire;
slotp = reader_table + slot;
oldslot = rapdu_set_reader (slotp->rapdu.handle, slot);
@ -3565,20 +3569,8 @@ apdu_get_status_internal (int slot, int hang, unsigned int *status, int on_wire)
if ((sw = hang? lock_slot (slot) : trylock_slot (slot)))
return sw;
/* If the card (with its lower-level driver) doesn't require
GET_STATUS on wire (because it supports INTERRUPT transfer for
status change, or it's a token which has a card always inserted),
no need to send on wire. */
if (!on_wire && !reader_table[slot].require_get_status)
{
unlock_slot (slot);
if (status)
*status = (APDU_CARD_USABLE|APDU_CARD_ACTIVE);
return 0;
}
if (reader_table[slot].get_status_reader)
sw = reader_table[slot].get_status_reader (slot, &s);
sw = reader_table[slot].get_status_reader (slot, &s, on_wire);
unlock_slot (slot);

14
scd/ccid-driver.c
View File

@ -2708,7 +2708,7 @@ ccid_poll (ccid_driver_t handle)
/* Note that this function won't return the error codes NO_CARD or
CARD_INACTIVE */
int
ccid_slot_status (ccid_driver_t handle, int *statusbits)
ccid_slot_status (ccid_driver_t handle, int *statusbits, int on_wire)
{
int rc;
unsigned char msg[100];
@ -2719,6 +2719,16 @@ ccid_slot_status (ccid_driver_t handle, int *statusbits)
if (handle->powered_off)
return CCID_DRIVER_ERR_NO_READER;
/* If the card (with its lower-level driver) doesn't require
GET_STATUS on wire (because it supports INTERRUPT transfer for
status change, or it's a token which has a card always inserted),
no need to send on wire. */
if (!on_wire && !ccid_require_get_status (handle))
{
*statusbits = 0;
return 0;
}
retry:
msg[0] = PC_to_RDR_GetSlotStatus;
msg[5] = 0; /* slot */
@ -2935,7 +2945,7 @@ ccid_get_atr (ccid_driver_t handle,
};
/* First check whether a card is available. */
rc = ccid_slot_status (handle, &statusbits);
rc = ccid_slot_status (handle, &statusbits, 1);
if (rc)
return rc;
if (statusbits == 2)

2
scd/ccid-driver.h
View File

@ -128,7 +128,7 @@ int ccid_shutdown_reader (ccid_driver_t handle);
int ccid_close_reader (ccid_driver_t handle);
int ccid_get_atr (ccid_driver_t handle,
unsigned char *atr, size_t maxatrlen, size_t *atrlen);
int ccid_slot_status (ccid_driver_t handle, int *statusbits);
int ccid_slot_status (ccid_driver_t handle, int *statusbits, int on_wire);
int ccid_transceive (ccid_driver_t handle,
const unsigned char *apdu, size_t apdulen,
unsigned char *resp, size_t maxresplen, size_t *nresp);