security-and-privacy/gnupg
security-and-privacy/gnupg
1
0
Fork 0
mirror of git://git.gnupg.org/gnupg.git synced 2025-03-24 22:09:57 +01:00
Code Activity

scd: Add INTERRUPT endp support to CCID driver.

Browse Source 
* scd/app.c (scd_update_reader_status_file): Fix releas of APP.
* scd/ccid-driver.c (struct ccid_driver_s): Add INTR_BUF.
(intr_cb, ccid_setup_intr): New.
(ccid_open_usb_reader): Call ccid_setup_intr.
(ccid_slot_status): Return CCID_DRIVER_ERR_NO_READER when removed.

Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
This commit is contained in:
NIIBE Yutaka 2017-01-26 16:54:40 +09:00
parent 3f4f20ee6e
commit bb5ceb78c3
2 changed files with 70 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
scd/app.c
View File

@ -1049,6 +1049,7 @@ scd_update_reader_status_file (void)
{
log_debug ("Removal of a card: %d\n", a->slot);
apdu_close_reader (a->slot);
release_application_internal (a);
deallocate_app (a);
}
else

73
scd/ccid-driver.c
View File

@ -272,6 +272,8 @@ struct ccid_driver_s
ccid_set_progress_cb. */
void (*progress_cb)(void *, const char *, int, int, int);
void *progress_cb_arg;
unsigned char intr_buf[64];
};
@ -1753,6 +1755,64 @@ ccid_compare_BAI (ccid_driver_t handle, unsigned int bai)
return handle->bai == bai;
}
static void
intr_cb (struct libusb_transfer *transfer)
{
ccid_driver_t handle = transfer->user_data;
DEBUGOUT ("CCID: interrupt callback\n");
if (transfer->status == LIBUSB_TRANSFER_NO_DEVICE)
{
device_removed:
DEBUGOUT ("CCID: device removed\n");
handle->powered_off = 1;
libusb_free_transfer (transfer);
}
else if (transfer->status == LIBUSB_TRANSFER_COMPLETED)
{
if (transfer->actual_length == 2
&& transfer->buffer[0] == 0x50
&& (transfer->buffer[1] & 1) == 0)
{
DEBUGOUT ("CCID: card removed\n");
handle->powered_off = 1;
libusb_free_transfer (transfer);
}
else
{
int err;
/* Submit the URB again to keep watching the INTERRUPT transfer. */
err = libusb_submit_transfer (transfer);
if (err == LIBUSB_ERROR_NO_DEVICE)
goto device_removed;
DEBUGOUT_1 ("CCID submit transfer again %d", err);
}
}
else
{
;
}
}
static void
ccid_setup_intr (ccid_driver_t handle)
{
struct libusb_transfer *transfer;
int err;
transfer = libusb_alloc_transfer (0);
libusb_fill_interrupt_transfer (transfer, handle->idev, handle->ep_intr,
handle->intr_buf, sizeof (handle->intr_buf),
intr_cb, handle, 0);
err = libusb_submit_transfer (transfer);
DEBUGOUT_2 ("CCID submit transfer (%x): %d", handle->ep_intr, err);
}
static int
ccid_open_usb_reader (const char *spec_reader_name,
int idx, struct ccid_dev_table *ccid_table,
@ -1847,6 +1907,9 @@ ccid_open_usb_reader (const char *spec_reader_name,
}
}
if ((*handle)->ep_intr)
ccid_setup_intr (*handle);
rc = ccid_vendor_specific_init (*handle);
leave:
@ -1871,8 +1934,8 @@ ccid_open_usb_reader (const char *spec_reader_name,
/* Open the reader with the internal number READERNO and return a
pointer to be used as handle in HANDLE. Returns 0 on success. */
int
ccid_open_reader (const char *spec_reader_name,
int idx, struct ccid_dev_table *ccid_table,
ccid_open_reader (const char *spec_reader_name, int idx,
struct ccid_dev_table *ccid_table,
ccid_driver_t *handle, char **rdrname_p)
{
int n;
@ -2516,6 +2579,9 @@ ccid_slot_status (ccid_driver_t handle, int *statusbits)
unsigned char seqno;
int retries = 0;
if (handle->powered_off)
return CCID_DRIVER_ERR_NO_READER;
retry:
msg[0] = PC_to_RDR_GetSlotStatus;
msg[5] = 0; /* slot */
@ -2546,8 +2612,7 @@ ccid_slot_status (ccid_driver_t handle, int *statusbits)
retries++;
goto retry;
}
if (rc && rc != CCID_DRIVER_ERR_NO_CARD
&& rc != CCID_DRIVER_ERR_CARD_INACTIVE)
if (rc && rc != CCID_DRIVER_ERR_NO_CARD && rc != CCID_DRIVER_ERR_CARD_INACTIVE)
return rc;
*statusbits = (msg[7] & 3);