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Code Activity

Support for CardMan 4040

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This commit is contained in:
Werner Koch 2006-02-06 16:13:20 +00:00
parent dfaee3d480
commit a5465705fb
3 changed files with 511 additions and 233 deletions
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15
scd/ChangeLog
View File

@ -1,3 +1,18 @@
2006-02-02 Werner Koch <wk@g10code.com>
* ccid-driver.c (special_transport): New
(ccid_open_reader, do_close_reader, ccid_shutdown_reader)
(bulk_out, bulk_in): Add support for CardMan 4040 reader.
* ccid-driver.c (scan_or_find_devices): Factored most code out to
(scan_or_find_usb_device): .. new.
(make_reader_id): Fixed vendor mask.
2006-01-01 Werner Koch <wk@g10code.com>
* app-openpgp.c (do_sign): Give user error if hash algorithm is
not supported by the card.
2005-12-06 Werner Koch <wk@g10code.com>
* apdu.c (open_pcsc_reader): Check that pcsc-wrapper is actually

8
scd/app-openpgp.c
View File

@ -484,7 +484,7 @@ count_bits (const unsigned char *a, size_t len)
Everything up to a LF is considered a mailbox or account name. If
the first LF is followed by DC4 (0x14) control sequence are
expected up to the next LF. Control sequences are separated by FS
(0x28) and consist of key=value pairs. There is one key defined:
(0x18) and consist of key=value pairs. There is one key defined:
F=<flags>
@ -2084,7 +2084,7 @@ check_against_given_fingerprint (app_t app, const char *fpr, int keyno)
raw message digest. For this application the KEYIDSTR consists of
the serialnumber and the fingerprint delimited by a slash.
Note that this fucntion may return the error code
Note that this function may return the error code
GPG_ERR_WRONG_CARD to indicate that the card currently present does
not match the one required for the requested action (e.g. the
serial number does not match). */
@ -2120,7 +2120,11 @@ do_sign (app_t app, const char *keyidstr, int hashalgo,
&& !memcmp (indata, rmd160_prefix, 15))
;
else
{
log_error (_("card does not support digest algorithm %s\n"),
gcry_md_algo_name (hashalgo));
return gpg_error (GPG_ERR_INV_VALUE);
}
/* Check whether an OpenPGP card of any version has been requested. */
if (strlen (keyidstr) < 32 || strncmp (keyidstr, "D27600012401", 12))

537
scd/ccid-driver.c
View File

@ -67,8 +67,8 @@
portable access to USB.
This driver has been tested with the SCM SCR335 and SPR532
smartcard readers and requires that a reader implements the TPDU
level exchange and does fully automatic initialization.
smartcard readers and requires that a reader implements APDU or
TPDU level exchange and does fully automatic initialization.
*/
#ifdef HAVE_CONFIG_H
@ -82,6 +82,9 @@
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <usb.h>
@ -194,11 +197,29 @@ enum {
/* We need to know the vendor to do some hacks. */
enum {
VENDOR_SCM = 0x04e6,
VENDOR_CHERRY = 0x046a,
VENDOR_SCM = 0x04e6,
VENDOR_OMNIKEY= 0x076b,
VENDOR_GEMPC = 0x08e6
};
/* A list and a table with special transport descriptions. */
enum {
TRANSPORT_USB = 0, /* Standard USB transport. */
TRANSPORT_CM4040 = 1 /* As used by the Cardman 4040. */
};
static struct
{
char *name; /* Device name. */
int type;
} transports[] = {
{ "/dev/cmx0", TRANSPORT_CM4040 },
{ "/dev/cmx1", TRANSPORT_CM4040 },
{ NULL },
};
/* Store information on the driver's state. A pointer to such a
structure is used as handle for most functions. */
@ -206,6 +227,8 @@ struct ccid_driver_s
{
usb_dev_handle *idev;
char *rid;
int dev_fd; /* -1 for USB transport or file descriptor of the
transport device. */
unsigned short id_vendor;
unsigned short id_product;
unsigned short bcd_device;
@ -306,7 +329,34 @@ print_command_failed (const unsigned char *msg)
}
/* Given a handle used for special transport prepare it for use. In
particular setup all information in way that resembles what
parse_cccid_descriptor does. */
static void
prepare_special_transport (ccid_driver_t handle)
{
assert (!handle->id_vendor);
handle->nonnull_nad = 0;
handle->auto_ifsd = 0;
handle->max_ifsd = 32;
handle->ifsd = 0;
handle->has_pinpad = 0;
handle->apdu_level = 0;
switch (handle->id_product)
{
case TRANSPORT_CM4040:
DEBUGOUT ("setting up transport for CardMan 4040\n");
/* Most values are guessed. */
handle->nonnull_nad = 1;
handle->auto_ifsd = 1;
handle->max_ifsd = 254;
handle->apdu_level = 1;
break;
default: assert (!"transport not defined");
}
}
/* Parse a CCID descriptor, optionally print all available features
and test whether this reader is usable by this driver. Returns 0
@ -615,7 +665,7 @@ make_reader_id (usb_dev_handle *idev,
char *rid;
char prefix[20];
sprintf (prefix, "%04X:%04X:", (vendor & 0xfff), (product & 0xffff));
sprintf (prefix, "%04X:%04X:", (vendor & 0xffff), (product & 0xffff));
rid = get_escaped_usb_string (idev, serialno_index, prefix, ":0");
if (!rid)
{
@ -658,10 +708,177 @@ find_endpoint (struct usb_interface_descriptor *ifcdesc, int mode)
}
/* Helper for scan_or_find_devices. This function returns true if a
requested device has been found or the caller should stop scanning
for other reasons. */
static int
scan_or_find_usb_device (int scan_mode,
int *readerno, int *count, char **rid_list,
const char *readerid,
struct usb_device *dev,
char **r_rid,
struct usb_device **r_dev,
usb_dev_handle **r_idev,
unsigned char **ifcdesc_extra,
size_t *ifcdesc_extra_len,
int *interface_number,
int *ep_bulk_out, int *ep_bulk_in, int *ep_intr)
{
int cfg_no;
int ifc_no;
int set_no;
struct usb_config_descriptor *config;
struct usb_interface *interface;
struct usb_interface_descriptor *ifcdesc;
char *rid;
usb_dev_handle *idev;
*r_idev = NULL;
for (cfg_no=0; cfg_no < dev->descriptor.bNumConfigurations; cfg_no++)
{
config = dev->config + cfg_no;
if(!config)
continue;
for (ifc_no=0; ifc_no < config->bNumInterfaces; ifc_no++)
{
interface = config->interface + ifc_no;
if (!interface)
continue;
for (set_no=0; set_no < interface->num_altsetting; set_no++)
{
ifcdesc = (interface->altsetting + set_no);
/* The second condition is for older SCM SPR 532 who did
not know about the assigned CCID class. Instead of
trying to interpret the strings we simply check the
product ID. */
if (ifcdesc && ifcdesc->extra
&& ((ifcdesc->bInterfaceClass == 11
&& ifcdesc->bInterfaceSubClass == 0
&& ifcdesc->bInterfaceProtocol == 0)
|| (ifcdesc->bInterfaceClass == 255
&& dev->descriptor.idVendor == VENDOR_SCM
&& dev->descriptor.idProduct == 0xe003)))
{
idev = usb_open (dev);
if (!idev)
{
DEBUGOUT_1 ("usb_open failed: %s\n",
strerror (errno));
continue; /* with next setting. */
}
rid = make_reader_id (idev,
dev->descriptor.idVendor,
dev->descriptor.idProduct,
dev->descriptor.iSerialNumber);
if (rid)
{
if (scan_mode)
{
char *p;
/* We are collecting infos about all
available CCID readers. Store them and
continue. */
DEBUGOUT_2 ("found CCID reader %d (ID=%s)\n",
*count, rid );
p = malloc ((*rid_list? strlen (*rid_list):0) + 1
+ strlen (rid) + 1);
if (p)
{
*p = 0;
if (*rid_list)
{
strcat (p, *rid_list);
free (*rid_list);
}
strcat (p, rid);
strcat (p, "\n");
*rid_list = p;
}
else /* Out of memory. */
free (rid);
rid = NULL;
++*count;
}
else if (!*readerno
|| (*readerno < 0
&& readerid
&& !strcmp (readerid, rid)))
{
/* We found the requested reader. */
if (ifcdesc_extra && ifcdesc_extra_len)
{
*ifcdesc_extra = malloc (ifcdesc
->extralen);
if (!*ifcdesc_extra)
{
usb_close (idev);
free (rid);
return 1; /* Out of core. */
}
memcpy (*ifcdesc_extra, ifcdesc->extra,
ifcdesc->extralen);
*ifcdesc_extra_len = ifcdesc->extralen;
}
if (interface_number)
*interface_number = (ifcdesc->bInterfaceNumber);
if (ep_bulk_out)
*ep_bulk_out = find_endpoint (ifcdesc, 0);
if (ep_bulk_in)
*ep_bulk_in = find_endpoint (ifcdesc, 1);
if (ep_intr)
*ep_intr = find_endpoint (ifcdesc, 2);
if (r_dev)
*r_dev = dev;
if (r_rid)
{
*r_rid = rid;
rid = NULL;
}
else
free (rid);
*r_idev = idev;
return 1; /* Found requested device. */
}
else
{
/* This is not yet the reader we want.
fixme: We should avoid the extra usb_open
in this case. */
if (*readerno >= 0)
--*readerno;
}
free (rid);
}
usb_close (idev);
idev = NULL;
return 0;
}
}
}
}
return 0;
}
/* Combination function to either scan all CCID devices or to find and
open one specific device.
The function returns 0 if a reader has been found or when a scan
returned without error.
FIXME!!
With READERNO = -1 and READERID is NULL, scan mode is used and
R_RID should be the address where to store the list of reader_ids
we found. If on return this list is empty, no CCID device has been
@ -671,11 +888,11 @@ find_endpoint (struct usb_interface_descriptor *ifcdesc, int mode)
With READERNO >= 0 or READERID is not NULL find mode is used. This
uses the same algorithm as the scan mode but stops and returns at
the entry number READERNO and return the handle for the the opened
USB device. If R_ID is not NULL it will receive the reader ID of
USB device. If R_RID is not NULL it will receive the reader ID of
that device. If R_DEV is not NULL it will the device pointer of
that device. If IFCDESC_EXTRA is NOT NULL it will receive a
malloced copy of the interfaces "extra: data filed;
IFCDESC_EXTRA_LEN receive the lengtyh of this field. If there is
IFCDESC_EXTRA_LEN receive the length of this field. If there is
no reader with number READERNO or that reader is not usable by our
implementation NULL will be returned. The caller must close a
returned USB device handle and free (if not passed as NULL) the
@ -684,17 +901,25 @@ find_endpoint (struct usb_interface_descriptor *ifcdesc, int mode)
IFCDESC_EXTRA_LEN. With READERID being -1 the function stops if
the READERID was found.
If R_FD is not -1 on return the device is not using USB for
transport but the device associated with that file descriptor. In
this case INTERFACE will receive the transport type and the other
USB specific return values are not used; the return value is
(void*)(1).
Note that the first entry of the returned reader ID list in scan mode
corresponds with a READERNO of 0 in find mode.
*/
static usb_dev_handle *
static int
scan_or_find_devices (int readerno, const char *readerid,
char **r_rid,
struct usb_device **r_dev,
unsigned char **ifcdesc_extra,
size_t *ifcdesc_extra_len,
int *interface_number,
int *ep_bulk_out, int *ep_bulk_in, int *ep_intr)
int *ep_bulk_out, int *ep_bulk_in, int *ep_intr,
usb_dev_handle **r_idev,
int *r_fd)
{
char *rid_list = NULL;
int count = 0;
@ -702,6 +927,7 @@ scan_or_find_devices (int readerno, const char *readerid,
struct usb_device *dev = NULL;
usb_dev_handle *idev = NULL;
int scan_mode = (readerno == -1 && !readerid);
int i;
/* Set return values to a default. */
if (r_rid)
@ -714,6 +940,10 @@ scan_or_find_devices (int readerno, const char *readerid,
*ifcdesc_extra_len = 0;
if (interface_number)
*interface_number = 0;
if (r_idev)
*r_idev = NULL;
if (r_fd)
*r_fd = -1;
/* See whether we want scan or find mode. */
if (scan_mode)
@ -734,73 +964,58 @@ scan_or_find_devices (int readerno, const char *readerid,
{
for (dev = bus->devices; dev; dev = dev->next)
{
int cfg_no;
for (cfg_no=0; cfg_no < dev->descriptor.bNumConfigurations; cfg_no++)
if (scan_or_find_usb_device (scan_mode, &readerno, &count, &rid_list,
readerid,
dev,
r_rid,
r_dev,
&idev,
ifcdesc_extra,
ifcdesc_extra_len,
interface_number,
ep_bulk_out, ep_bulk_in, ep_intr))
{
struct usb_config_descriptor *config = dev->config + cfg_no;
int ifc_no;
if(!config)
continue;
for (ifc_no=0; ifc_no < config->bNumInterfaces; ifc_no++)
{
struct usb_interface *interface
= config->interface + ifc_no;
int set_no;
if (!interface)
continue;
for (set_no=0; set_no < interface->num_altsetting; set_no++)
{
struct usb_interface_descriptor *ifcdesc
= interface->altsetting + set_no;
char *rid;
/* The second condition is for some SCM Micro
SPR 532 which does not know about the
assigned CCID class. Instead of trying to
interpret the strings we simply look at the
product ID. */
if (ifcdesc && ifcdesc->extra
&& ( (ifcdesc->bInterfaceClass == 11
&& ifcdesc->bInterfaceSubClass == 0
&& ifcdesc->bInterfaceProtocol == 0)
|| (ifcdesc->bInterfaceClass == 255
&& dev->descriptor.idVendor == 0x04e6
&& dev->descriptor.idProduct == 0xe003)))
{
idev = usb_open (dev);
/* Found requested device or out of core. */
if (!idev)
{
DEBUGOUT_1 ("usb_open failed: %s\n",
strerror (errno));
continue;
free (rid_list);
return -1; /* error */
}
*r_idev = idev;
return 0;
}
}
}
rid = make_reader_id (idev,
dev->descriptor.idVendor,
dev->descriptor.idProduct,
dev->descriptor.iSerialNumber);
if (rid)
/* Now check whether there are any devices with special transport types. */
for (i=0; transports[i].name; i++)
{
int fd;
char *rid, *p;
fd = open (transports[i].name, O_RDWR);
if (fd == -1)
continue;
rid = malloc (strlen (transports[i].name) + 30 + 10);
if (!rid)
{
close (fd);
free (rid_list);
return -1; /* Error. */
}
sprintf (rid, "0000:%04X:%s:0", transports[i].type, transports[i].name);
if (scan_mode)
{
char *p;
/* We are collecting infos about all
available CCID readers. Store
them and continue. */
DEBUGOUT_2 ("found CCID reader %d "
"(ID=%s)\n",
count, rid );
if ((p = malloc ((rid_list?
strlen (rid_list):0)
+ 1 + strlen (rid)
+ 1)))
DEBUGOUT_2 ("found CCID reader %d (ID=%s)\n", count, rid);
p = malloc ((rid_list? strlen (rid_list):0) + 1 + strlen (rid) + 1);
if (!p)
{
close (fd);
free (rid_list);
free (rid);
return -1; /* Error. */
}
*p = 0;
if (rid_list)
{
@ -810,85 +1025,41 @@ scan_or_find_devices (int readerno, const char *readerid,
strcat (p, rid);
strcat (p, "\n");
rid_list = p;
++count;
}
else /* Out of memory. */
free (rid);
rid = NULL;
count++;
}
else if (!readerno
|| (readerno < 0
&& readerid
&& !strcmp (readerid, rid)))
else if (!readerno ||
(readerno < 0 && readerid && !strcmp (readerid, rid)))
{
/* We found the requested reader. */
if (ifcdesc_extra && ifcdesc_extra_len)
{
*ifcdesc_extra = malloc (ifcdesc
->extralen);
if (!*ifcdesc_extra)
{
usb_close (idev);
free (rid);
return NULL; /* Out of core. */
}
memcpy (*ifcdesc_extra, ifcdesc->extra,
ifcdesc->extralen);
*ifcdesc_extra_len = ifcdesc->extralen;
}
/* Found requested device. */
if (interface_number)
*interface_number = (ifcdesc->
bInterfaceNumber);
if (ep_bulk_out)
*ep_bulk_out = find_endpoint (ifcdesc, 0);
if (ep_bulk_in)
*ep_bulk_in = find_endpoint (ifcdesc, 1);
if (ep_intr)
*ep_intr = find_endpoint (ifcdesc, 2);
if (r_dev)
*r_dev = dev;
*interface_number = transports[i].type;
if (r_rid)
{
*r_rid = rid;
rid = NULL;
}
else
free (rid);
return idev; /* READY. */
*r_fd = fd;
return 0; /* Okay, found device */
}
else
else /* This is not yet the reader we want. */
{
/* This is not yet the reader we
want. fixme: We could avoid the
extra usb_open in this case. */
if (readerno >= 0)
readerno--;
--readerno;
}
free (rid);
}
usb_close (idev);
idev = NULL;
goto next_device;
}
}
}
}
next_device:
;
}
close (fd);
}
if (scan_mode)
{
*r_rid = rid_list;
return NULL;
return 0;
}
else
return -1;
}
/* Set the level of debugging to to usea dn return the old level. -1
/* Set the level of debugging to LEVEL and return the old level. -1
just returns the old level. A level of 0 disables debugging, 1
enables debugging, 2 enables additional tracing of the T=1
protocol, other values are not yet defined. */
@ -913,8 +1084,9 @@ ccid_get_reader_list (void)
initialized_usb = 1;
}
scan_or_find_devices (-1, NULL, &reader_list, NULL, NULL, NULL, NULL,
NULL, NULL, NULL);
if (scan_or_find_devices (-1, NULL, &reader_list, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL))
return NULL; /* Error. */
return reader_list;
}
@ -927,6 +1099,7 @@ ccid_open_reader (ccid_driver_t *handle, const char *readerid)
int rc = 0;
struct usb_device *dev = NULL;
usb_dev_handle *idev = NULL;
int dev_fd = -1;
char *rid = NULL;
unsigned char *ifcdesc_extra = NULL;
size_t ifcdesc_extra_len;
@ -959,10 +1132,10 @@ ccid_open_reader (ccid_driver_t *handle, const char *readerid)
else
readerno = 0; /* Default. */
idev = scan_or_find_devices (readerno, readerid, &rid, &dev,
if (scan_or_find_devices (readerno, readerid, &rid, &dev,
&ifcdesc_extra, &ifcdesc_extra_len,
&ifc_no, &ep_bulk_out, &ep_bulk_in, &ep_intr);
if (!idev)
&ifc_no, &ep_bulk_out, &ep_bulk_in, &ep_intr,
&idev, &dev_fd) )
{
if (readerno == -1)
DEBUGOUT_1 ("no CCID reader with ID %s\n", readerid );
@ -980,8 +1153,11 @@ ccid_open_reader (ccid_driver_t *handle, const char *readerid)
rc = CCID_DRIVER_ERR_OUT_OF_CORE;
goto leave;
}
(*handle)->idev = idev;
(*handle)->rid = rid;
if (idev) /* Regular USB transport. */
{
(*handle)->idev = idev;
(*handle)->dev_fd = -1;
(*handle)->id_vendor = dev->descriptor.idVendor;
(*handle)->id_product = dev->descriptor.idProduct;
(*handle)->bcd_device = dev->descriptor.bcdDevice;
@ -989,10 +1165,24 @@ ccid_open_reader (ccid_driver_t *handle, const char *readerid)
(*handle)->ep_bulk_out = ep_bulk_out;
(*handle)->ep_bulk_in = ep_bulk_in;
(*handle)->ep_intr = ep_intr;
}
else if (dev_fd != -1) /* Device transport. */
{
(*handle)->idev = NULL;
(*handle)->dev_fd = dev_fd;
(*handle)->id_vendor = 0; /* Magic vendor for special transport. */
(*handle)->id_product = ifc_no; /* Transport type */
prepare_special_transport (*handle);
}
else
{
assert (!"no transport"); /* Bug. */
}
DEBUGOUT_2 ("using CCID reader %d (ID=%s)\n", readerno, rid );
if (idev)
{
if (parse_ccid_descriptor (*handle, ifcdesc_extra, ifcdesc_extra_len))
{
DEBUGOUT ("device not supported\n");
@ -1007,6 +1197,7 @@ ccid_open_reader (ccid_driver_t *handle, const char *readerid)
rc = CCID_DRIVER_ERR_CARD_IO_ERROR;
goto leave;
}
}
leave:
free (ifcdesc_extra);
@ -1015,6 +1206,8 @@ ccid_open_reader (ccid_driver_t *handle, const char *readerid)
free (rid);
if (idev)
usb_close (idev);
if (dev_fd != -1)
close (dev_fd);
free (*handle);
*handle = NULL;
}
@ -1054,6 +1247,11 @@ do_close_reader (ccid_driver_t handle)
usb_close (handle->idev);
handle->idev = NULL;
}
if (handle->dev_fd != -1)
{
close (handle->dev_fd);
handle->dev_fd = -1;
}
}
@ -1080,16 +1278,17 @@ ccid_shutdown_reader (ccid_driver_t handle)
do_close_reader (handle);
idev = scan_or_find_devices (-1, handle->rid, NULL, &dev,
if (scan_or_find_devices (-1, handle->rid, NULL, &dev,
&ifcdesc_extra, &ifcdesc_extra_len,
&ifc_no, &ep_bulk_out, &ep_bulk_in, &ep_intr);
if (!idev)
&ifc_no, &ep_bulk_out, &ep_bulk_in, &ep_intr,
&idev, NULL) || !idev)
{
DEBUGOUT_1 ("no CCID reader with ID %s\n", handle->rid);
return CCID_DRIVER_ERR_NO_READER;
}
if (idev)
{
handle->idev = idev;
handle->ifc_no = ifc_no;
handle->ep_bulk_out = ep_bulk_out;
@ -1110,13 +1309,18 @@ ccid_shutdown_reader (ccid_driver_t handle)
rc = CCID_DRIVER_ERR_CARD_IO_ERROR;
goto leave;
}
}
leave:
free (ifcdesc_extra);
if (rc)
{
if (handle->idev)
usb_close (handle->idev);
handle->idev = NULL;
if (handle->dev_fd != -1)
close (handle->dev_fd);
handle->dev_fd = -1;
}
return rc;
@ -1147,6 +1351,31 @@ ccid_check_card_presence (ccid_driver_t handle)
}
/* Write NBYTES of BUF to file descriptor FD. */
static int
writen (int fd, const void *buf, size_t nbytes)
{
size_t nleft = nbytes;
int nwritten;
while (nleft > 0)
{
nwritten = write (fd, buf, nleft);
if (nwritten < 0)
{
if (errno == EINTR)
nwritten = 0;
else
return -1;
}
nleft -= nwritten;
buf = (const char*)buf + nwritten;
}
return 0;
}
/* Write a MSG of length MSGLEN to the designated bulk out endpoint.
Returns 0 on success. */
static int
@ -1154,17 +1383,28 @@ bulk_out (ccid_driver_t handle, unsigned char *msg, size_t msglen)
{
int rc;
if (handle->idev)
{
rc = usb_bulk_write (handle->idev,
handle->ep_bulk_out,
(char*)msg, msglen,
1000 /* ms timeout */);
if (rc == msglen)
return 0;
if (rc == -1)
DEBUGOUT_1 ("usb_bulk_write error: %s\n", strerror (errno));
else
DEBUGOUT_1 ("usb_bulk_write failed: %d\n", rc);
}
else
{
rc = writen (handle->dev_fd, msg, msglen);
if (!rc)
return 0;
DEBUGOUT_2 ("writen to %d failed: %s\n",
handle->dev_fd, strerror (errno));
}
return CCID_DRIVER_ERR_CARD_IO_ERROR;
}
@ -1187,6 +1427,8 @@ bulk_in (ccid_driver_t handle, unsigned char *buffer, size_t length,
for USB IOCTLs. */
memset (buffer, 0, length);
retry:
if (handle->idev)
{
rc = usb_bulk_read (handle->idev,
handle->ep_bulk_in,
(char*)buffer, length,
@ -1196,8 +1438,20 @@ bulk_in (ccid_driver_t handle, unsigned char *buffer, size_t length,
DEBUGOUT_1 ("usb_bulk_read error: %s\n", strerror (errno));
return CCID_DRIVER_ERR_CARD_IO_ERROR;
}
*nread = msglen = rc;
}
else
{
rc = read (handle->dev_fd, buffer, length);
if (rc < 0)
{
DEBUGOUT_2 ("read from %d failed: %s\n",
handle->dev_fd, strerror (errno));
return CCID_DRIVER_ERR_CARD_IO_ERROR;
}
*nread = msglen = rc;
}
if (msglen < 10)
{
@ -1339,12 +1593,17 @@ ccid_poll (ccid_driver_t handle)
size_t msglen;
int i, j;
if (handle->idev)
{
rc = usb_bulk_read (handle->idev,
handle->ep_intr,
(char*)msg, sizeof msg,
0 /* ms timeout */ );
if (rc < 0 && errno == ETIMEDOUT)
return 0;
}
else
return 0;
if (rc < 0)
{