ccid/src/ccid_usb.c

/*
    ccid_usb.c: USB access routines using the libusb library
    Copyright (C) 2003   Ludovic Rousseau

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/

/*
 * $Id$
 */

#define __CCID_USB__

#include <stdio.h>
#include <string.h> 
#include <errno.h>
#include <usb.h>

#include "pcscdefines.h"
#include "config.h"
#include "debug.h"
#include "utils.h"
#include "parser.h"
#include "ccid.h"


/* read timeout
 * we must wait enough so that the card can finish its calculation
 * the card, and then the reader should send TIME REQUEST bytes
 * so this timeout should never occur */
#define USB_READ_TIMEOUT (60 * 1000)    /* 1 minute timeout */

/* write timeout
 * we don't have to wait a long time since the card was doing nothing */
#define USB_WRITE_TIMEOUT (5 * 1000)  /* 5 seconds timeout */


#define BUS_DEVICE_STRSIZE 32

typedef struct
{
        usb_dev_handle *handle;
        struct usb_device *dev;

        /*
         * Used to store device name string %s/%s like:
         * 001/002 (Linux)
         * /dev/usb0//dev/ (FreeBSD)
         * /dev/usb0//dev/ugen0 (OpenBSD)
         */
        char device_name[BUS_DEVICE_STRSIZE];

        /*
         * Endpoints
         */
        int bulk_in;
        int bulk_out;

        /*
         * CCID infos common to USB and serial
         */
        _ccid_descriptor ccid;

} _usbDevice;

/* The _usbDevice structure must be defined before including ccid_usb.h */
#include "ccid_usb.h"

static _usbDevice usbDevice[PCSCLITE_MAX_READERS] = {
        [ 0 ... (PCSCLITE_MAX_READERS-1) ] = { NULL, NULL, "", 0, 0 }
};

#define PCSCLITE_MANUKEY_NAME                   "ifdVendorID"
#define PCSCLITE_PRODKEY_NAME                   "ifdProductID"
#define PCSCLITE_NAMEKEY_NAME                   "ifdFriendlyName"

/*****************************************************************************
 *
 *                                      OpenUSB
 *
 ****************************************************************************/
status_t OpenUSB(int lun, int Channel)
{
        static struct usb_bus *busses = NULL;
        int reader = LunToReaderIndex(lun);
        int alias = 0;
        struct usb_bus *bus;
        struct usb_dev_handle *dev_handle;
        char keyValue[TOKEN_MAX_VALUE_SIZE];
        int vendorID, productID;
        char infofile[FILENAME_MAX];

        DEBUG_COMM3("Lun: %X, Channel: %X", lun, Channel);

        if (busses == NULL)
                usb_init();

        usb_find_busses();
        usb_find_devices();

        busses = usb_get_busses();

        if (busses == NULL)
        {
                DEBUG_CRITICAL("No USB busses found");
                return STATUS_UNSUCCESSFUL;
        }

        /* is the lun already used? */
        if (usbDevice[reader].handle != NULL)
        {
                DEBUG_CRITICAL2("USB driver with lun %X already in use", lun);
                return STATUS_UNSUCCESSFUL;
        }

        /* Info.plist full patch filename */
        snprintf(infofile, sizeof(infofile), "%s/%s/Contents/Info.plist",
                PCSCLITE_HP_DROPDIR, BUNDLE);

        /* general driver info */
        if (!LTPBundleFindValueWithKey(infofile, "ifdManufacturerString", keyValue, 0))
                DEBUG_CRITICAL2("Manufacturer: %s", keyValue);
        else
        {
                DEBUG_CRITICAL2("LTPBundleFindValueWithKey error. Can't find %s?",
                        infofile);
                return STATUS_UNSUCCESSFUL;
        }
        if (!LTPBundleFindValueWithKey(infofile, "ifdProductString", keyValue, 0))
                DEBUG_CRITICAL2("ProductString: %s", keyValue);
        else
                return STATUS_UNSUCCESSFUL;
        if (!LTPBundleFindValueWithKey(infofile, "Copyright", keyValue, 0))
                DEBUG_CRITICAL2("Copyright: %s", keyValue);
        else
                return STATUS_UNSUCCESSFUL;
        vendorID = strlen(keyValue);
        alias = 0x1D;
        for (; vendorID--;)
                alias ^= keyValue[vendorID];

        /* for any supported reader */
        while (LTPBundleFindValueWithKey(infofile, PCSCLITE_MANUKEY_NAME, keyValue, alias) == 0)
        {
                vendorID = strtoul(keyValue, 0, 16);

                if (LTPBundleFindValueWithKey(infofile, PCSCLITE_PRODKEY_NAME, keyValue, alias))
                        goto end;
                productID = strtoul(keyValue, 0, 16);

                if (LTPBundleFindValueWithKey(infofile, PCSCLITE_NAMEKEY_NAME, keyValue, alias))
                        goto end;

                /* on any USB buses */
                for (bus = busses; bus; bus = bus->next)
                {
                        struct usb_device *dev;

                        /* any device on this bus */
                        for (dev = bus->devices; dev; dev = dev->next)
                        {
                                if (dev->descriptor.idVendor == vendorID
                                        && dev->descriptor.idProduct == productID)
                                {
                                        int r, already_used;
                                        char device_name[BUS_DEVICE_STRSIZE];

                                        if (snprintf(device_name, BUS_DEVICE_STRSIZE, "%s/%s",
                                                bus->dirname, dev->filename) < 0)
                                        {
                                                DEBUG_CRITICAL2("Device name too long: %s", device_name);
                                                return STATUS_UNSUCCESSFUL;
                                        }

                                        /* is it already opened? */
                                        already_used = FALSE;
                                        for (r=0; r<PCSCLITE_MAX_READERS; r++)
                                        {
                                                if (usbDevice[r].dev)
                                                {
                                                        DEBUG_COMM3("Checking new device '%s' against old '%s'",
                                                                device_name, usbDevice[r].device_name);
                                                        if (strcmp(usbDevice[r].device_name, device_name) == 0)
                                                                already_used = TRUE;
                                                }
                                        }

                                        if (!already_used)
                                        {
                                                DEBUG_COMM2("Trying to open USB bus/device: %s",
                                                         device_name);

                                                dev_handle = usb_open(dev);
                                                if (dev_handle)
                                                {
                                                        int interface;

                                                        if (dev->config == NULL)
                                                        {
                                                                DEBUG_CRITICAL2("No dev->config found for %s",
                                                                         device_name);
                                                                return STATUS_UNSUCCESSFUL;
                                                        }

                                                        if (dev->config->interface->altsetting->extralen != 54)
                                                        {
                                                                DEBUG_CRITICAL3("Extra field for %s has a wrong length: %d", device_name, dev->config->interface->altsetting->extralen);
                                                                return STATUS_UNSUCCESSFUL;
                                                        }

                                                        interface = dev->config->interface->altsetting->bInterfaceNumber;
                                                        if (usb_claim_interface(dev_handle, interface) < 0)
                                                        {
                                                                DEBUG_CRITICAL3("Can't claim interface %s: %s",
                                                                        device_name, strerror(errno));
                                                                return STATUS_UNSUCCESSFUL;
                                                        }

                                                        DEBUG_INFO4("Found Vendor/Product: %04X/%04X (%s)",
                                                                dev->descriptor.idVendor,
                                                                dev->descriptor.idProduct, keyValue);
                                                        DEBUG_INFO2("Using USB bus/device: %s",
                                                                 device_name);

                                                        /* Get Endpoints values*/
                                                        get_end_points(dev, &usbDevice[reader]);

                                                        /* store device information */
                                                        usbDevice[reader].handle = dev_handle;
                                                        usbDevice[reader].dev = dev;
                                                        strncpy(usbDevice[reader].device_name,
                                                                device_name, BUS_DEVICE_STRSIZE);

                                                        /* CCID common informations */
                                                        usbDevice[reader].ccid.bSeq = 1;
                                                        usbDevice[reader].ccid.readerID =
                                                                (dev->descriptor.idVendor << 16) +
                                                                dev->descriptor.idProduct;
                                                        usbDevice[reader].ccid.dwFeatures = dw2i(dev->config->interface->altsetting->extra, 40);
                                                        usbDevice[reader].ccid.dwMaxCCIDMessageLength = dw2i(dev->config->interface->altsetting->extra, 44);

                                                        goto end;
                                                }
                                                else
                                                        DEBUG_CRITICAL3("Can't usb_open(%s): %s",
                                                                device_name,
                                                                strerror(errno));
                                        }
                                        else
                                        {
                                                DEBUG_INFO2("USB device %s already in use. Checking next one.",
                                                        device_name);
                                        }
                                }
                        }
                }

                /* go to next supported reader */
                alias++;
        }
end:
        if (usbDevice[reader].handle == NULL)
                return STATUS_UNSUCCESSFUL;

        return STATUS_SUCCESS;
} /* OpenUSB */


/*****************************************************************************
 *
 *                                      WriteUSB
 *
 ****************************************************************************/
status_t WriteUSB(int lun, int length, unsigned char *buffer)
{
        int rv;
        int reader = LunToReaderIndex(lun);
#ifdef DEBUG_LEVEL_COMM
        char debug_header[] = "-> 121234 ";

        sprintf(debug_header, "-> %06X ", (int)lun);
#endif

#ifdef DEBUG_LEVEL_COMM
        DEBUG_XXD(debug_header, buffer, length);
#endif

        rv = usb_bulk_write(usbDevice[reader].handle, usbDevice[reader].bulk_out, buffer, length, USB_WRITE_TIMEOUT);

        if (rv < 0)
        {
                DEBUG_CRITICAL3("usb_bulk_write(%s): %s",
                        usbDevice[reader].device_name, strerror(errno));
                return STATUS_UNSUCCESSFUL;
        }

        return STATUS_SUCCESS;
} /* WriteUSB */


/*****************************************************************************
 *
 *                                      ReadUSB
 *
 ****************************************************************************/
status_t ReadUSB(int lun, int * length, unsigned char *buffer)
{
        int rv;
        int reader = LunToReaderIndex(lun);
#ifdef DEBUG_LEVEL_COMM
        char debug_header[] = "<- 121234 ";

        sprintf(debug_header, "<- %06X ", (int)lun);
#endif


        rv = usb_bulk_read(usbDevice[reader].handle, usbDevice[reader].bulk_in, buffer, *length, USB_READ_TIMEOUT);
        *length = rv;

        if (rv < 0)
        {
                DEBUG_CRITICAL3("usb_bulk_read(%s): %s",
                        usbDevice[reader].device_name, strerror(errno));
                return STATUS_UNSUCCESSFUL;
        }

#ifdef DEBUG_LEVEL_COMM
        DEBUG_XXD(debug_header, buffer, *length);
#endif

        return STATUS_SUCCESS;
} /* ReadUSB */


/*****************************************************************************
 *
 *                                      CloseUSB
 *
 ****************************************************************************/
status_t CloseUSB(int lun)
{
        int reader = LunToReaderIndex(lun);

        /* device not opened */
        if (usbDevice[reader].dev == NULL)
                return STATUS_UNSUCCESSFUL;

        DEBUG_COMM2("Closing USB device: %s", usbDevice[reader].device_name);

        usb_release_interface(usbDevice[reader].handle, usbDevice[reader].dev->config->interface->altsetting->bInterfaceNumber);

        usb_close(usbDevice[reader].handle);

        /* mark the resource unused */
        usbDevice[reader].handle = NULL;
        usbDevice[reader].dev = NULL;
        usbDevice[reader].device_name[0] = '\0';

        return STATUS_SUCCESS;
} /* CloseUSB */


/*****************************************************************************
 *
 *                                      get_ccid_descriptor
 *
 ****************************************************************************/
_ccid_descriptor *get_ccid_descriptor(int lun)
{
        return &usbDevice[LunToReaderIndex(lun)].ccid;
} /* get_ccid_descriptor */


/*****************************************************************************
 *
 *                                      get_desc
 *
 ****************************************************************************/
int get_desc(int channel, char *device_name[], usb_dev_handle **handle, struct
        usb_device **dev)
{
        if (channel < 0 || channel > PCSCLITE_MAX_READERS)
                return 1;

        *device_name = usbDevice[channel].device_name;
        *handle = usbDevice[channel].handle;
        *dev = usbDevice[channel].dev;

        return 0;
} /* get_desc */

/*****************************************************************************
 *
 *                                      get_end_points
 *
 ****************************************************************************/
int get_end_points(struct usb_device *dev, _usbDevice *usb_device)
{
        int i;
        int bEndpointAddress;

        /*
         * 3 Endpoints maximum: Interrupt In, Bulk In, Bulk Out
         */
        for (i=0; i<3; i++)
        {
                if (dev->config->interface->altsetting->endpoint[i].bmAttributes != USB_ENDPOINT_TYPE_BULK)
                        continue;

                bEndpointAddress = dev->config->interface->altsetting->endpoint[i].bEndpointAddress;

                if ((bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_ENDPOINT_IN)
                        usb_device->bulk_in = bEndpointAddress;

                if ((bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_ENDPOINT_OUT)
                        usb_device->bulk_out = bEndpointAddress;
        }

        return 0;
} /* get_end_points */

1	/*
2	ccid_usb.c: USB access routines using the libusb library
3	Copyright (C) 2003 Ludovic Rousseau
4
5	This program is free software; you can redistribute it and/or modify
6	it under the terms of the GNU General Public License as published by
7	the Free Software Foundation; either version 2 of the License, or
8	(at your option) any later version.
9
10	This program is distributed in the hope that it will be useful,
11	but WITHOUT ANY WARRANTY; without even the implied warranty of
12	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13	GNU General Public License for more details.
14
15	You should have received a copy of the GNU General Public License
16	along with this program; if not, write to the Free Software
17	Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18	*/
19
20	/*
21	* $Id$
22	*/
23
24	#define __CCID_USB__
25
26	#include <stdio.h>
27	#include <string.h>
28	#include <errno.h>
29	#include <usb.h>
30
31	#include "pcscdefines.h"
32	#include "config.h"
33	#include "debug.h"
34	#include "utils.h"
35	#include "parser.h"
36	#include "ccid.h"
37
38
39	/* read timeout
40	* we must wait enough so that the card can finish its calculation
41	* the card, and then the reader should send TIME REQUEST bytes
42	* so this timeout should never occur */
43	#define USB_READ_TIMEOUT (60 * 1000) /* 1 minute timeout */
44
45	/* write timeout
46	* we don't have to wait a long time since the card was doing nothing */
47	#define USB_WRITE_TIMEOUT (5 * 1000) /* 5 seconds timeout */
48
49
50	#define BUS_DEVICE_STRSIZE 32
51
52	typedef struct
53	{
54	usb_dev_handle *handle;
55	struct usb_device *dev;
56
57	/*
58	* Used to store device name string %s/%s like:
59	* 001/002 (Linux)
60	* /dev/usb0//dev/ (FreeBSD)
61	* /dev/usb0//dev/ugen0 (OpenBSD)
62	*/
63	char device_name[BUS_DEVICE_STRSIZE];
64
65	/*
66	* Endpoints
67	*/
68	int bulk_in;
69	int bulk_out;
70
71	/*
72	* CCID infos common to USB and serial
73	*/
74	_ccid_descriptor ccid;
75
76	} _usbDevice;
77
78	/* The _usbDevice structure must be defined before including ccid_usb.h */
79	#include "ccid_usb.h"
80
81	static _usbDevice usbDevice[PCSCLITE_MAX_READERS] = {
82	[ 0 ... (PCSCLITE_MAX_READERS-1) ] = { NULL, NULL, "", 0, 0 }
83	};
84
85	#define PCSCLITE_MANUKEY_NAME "ifdVendorID"
86	#define PCSCLITE_PRODKEY_NAME "ifdProductID"
87	#define PCSCLITE_NAMEKEY_NAME "ifdFriendlyName"
88
89	/*****************************************************************************
90	*
91	* OpenUSB
92	*
93	****************************************************************************/
94	status_t OpenUSB(int lun, int Channel)
95	{
96	static struct usb_bus *busses = NULL;
97	int reader = LunToReaderIndex(lun);
98	int alias = 0;
99	struct usb_bus *bus;
100	struct usb_dev_handle *dev_handle;
101	char keyValue[TOKEN_MAX_VALUE_SIZE];
102	int vendorID, productID;
103	char infofile[FILENAME_MAX];
104
105	DEBUG_COMM3("Lun: %X, Channel: %X", lun, Channel);
106
107	if (busses == NULL)
108	usb_init();
109
110	usb_find_busses();
111	usb_find_devices();
112
113	busses = usb_get_busses();
114
115	if (busses == NULL)
116	{
117	DEBUG_CRITICAL("No USB busses found");
118	return STATUS_UNSUCCESSFUL;
119	}
120
121	/* is the lun already used? */
122	if (usbDevice[reader].handle != NULL)
123	{
124	DEBUG_CRITICAL2("USB driver with lun %X already in use", lun);
125	return STATUS_UNSUCCESSFUL;
126	}
127
128	/* Info.plist full patch filename */
129	snprintf(infofile, sizeof(infofile), "%s/%s/Contents/Info.plist",
130	PCSCLITE_HP_DROPDIR, BUNDLE);
131
132	/* general driver info */
133	if (!LTPBundleFindValueWithKey(infofile, "ifdManufacturerString", keyValue, 0))
134	DEBUG_CRITICAL2("Manufacturer: %s", keyValue);
135	else
136	{
137	DEBUG_CRITICAL2("LTPBundleFindValueWithKey error. Can't find %s?",
138	infofile);
139	return STATUS_UNSUCCESSFUL;
140	}
141	if (!LTPBundleFindValueWithKey(infofile, "ifdProductString", keyValue, 0))
142	DEBUG_CRITICAL2("ProductString: %s", keyValue);
143	else
144	return STATUS_UNSUCCESSFUL;
145	if (!LTPBundleFindValueWithKey(infofile, "Copyright", keyValue, 0))
146	DEBUG_CRITICAL2("Copyright: %s", keyValue);
147	else
148	return STATUS_UNSUCCESSFUL;
149	vendorID = strlen(keyValue);
150	alias = 0x1D;
151	for (; vendorID--;)
152	alias ^= keyValue[vendorID];
153
154	/* for any supported reader */
155	while (LTPBundleFindValueWithKey(infofile, PCSCLITE_MANUKEY_NAME, keyValue, alias) == 0)
156	{
157	vendorID = strtoul(keyValue, 0, 16);
158
159	if (LTPBundleFindValueWithKey(infofile, PCSCLITE_PRODKEY_NAME, keyValue, alias))
160	goto end;
161	productID = strtoul(keyValue, 0, 16);
162
163	if (LTPBundleFindValueWithKey(infofile, PCSCLITE_NAMEKEY_NAME, keyValue, alias))
164	goto end;
165
166	/* on any USB buses */
167	for (bus = busses; bus; bus = bus->next)
168	{
169	struct usb_device *dev;
170
171	/* any device on this bus */
172	for (dev = bus->devices; dev; dev = dev->next)
173	{
174	if (dev->descriptor.idVendor == vendorID
175	&& dev->descriptor.idProduct == productID)
176	{
177	int r, already_used;
178	char device_name[BUS_DEVICE_STRSIZE];
179
180	if (snprintf(device_name, BUS_DEVICE_STRSIZE, "%s/%s",
181	bus->dirname, dev->filename) < 0)
182	{
183	DEBUG_CRITICAL2("Device name too long: %s", device_name);
184	return STATUS_UNSUCCESSFUL;
185	}
186
187	/* is it already opened? */
188	already_used = FALSE;
189	for (r=0; r<PCSCLITE_MAX_READERS; r++)
190	{
191	if (usbDevice[r].dev)
192	{
193	DEBUG_COMM3("Checking new device '%s' against old '%s'",
194	device_name, usbDevice[r].device_name);
195	if (strcmp(usbDevice[r].device_name, device_name) == 0)
196	already_used = TRUE;
197	}
198	}
199
200	if (!already_used)
201	{
202	DEBUG_COMM2("Trying to open USB bus/device: %s",
203	device_name);
204
205	dev_handle = usb_open(dev);
206	if (dev_handle)
207	{
208	int interface;
209
210	if (dev->config == NULL)
211	{
212	DEBUG_CRITICAL2("No dev->config found for %s",
213	device_name);
214	return STATUS_UNSUCCESSFUL;
215	}
216
217	if (dev->config->interface->altsetting->extralen != 54)
218	{
219	DEBUG_CRITICAL3("Extra field for %s has a wrong length: %d", device_name, dev->config->interface->altsetting->extralen);
220	return STATUS_UNSUCCESSFUL;
221	}
222
223	interface = dev->config->interface->altsetting->bInterfaceNumber;
224	if (usb_claim_interface(dev_handle, interface) < 0)
225	{
226	DEBUG_CRITICAL3("Can't claim interface %s: %s",
227	device_name, strerror(errno));
228	return STATUS_UNSUCCESSFUL;
229	}
230
231	DEBUG_INFO4("Found Vendor/Product: %04X/%04X (%s)",
232	dev->descriptor.idVendor,
233	dev->descriptor.idProduct, keyValue);
234	DEBUG_INFO2("Using USB bus/device: %s",
235	device_name);
236
237	/* Get Endpoints values*/
238	get_end_points(dev, &usbDevice[reader]);
239
240	/* store device information */
241	usbDevice[reader].handle = dev_handle;
242	usbDevice[reader].dev = dev;
243	strncpy(usbDevice[reader].device_name,
244	device_name, BUS_DEVICE_STRSIZE);
245
246	/* CCID common informations */
247	usbDevice[reader].ccid.bSeq = 1;
248	usbDevice[reader].ccid.readerID =
249	(dev->descriptor.idVendor << 16) +
250	dev->descriptor.idProduct;
251	usbDevice[reader].ccid.dwFeatures = dw2i(dev->config->interface->altsetting->extra, 40);
252	usbDevice[reader].ccid.dwMaxCCIDMessageLength = dw2i(dev->config->interface->altsetting->extra, 44);
253
254	goto end;
255	}
256	else
257	DEBUG_CRITICAL3("Can't usb_open(%s): %s",
258	device_name,
259	strerror(errno));
260	}
261	else
262	{
263	DEBUG_INFO2("USB device %s already in use. Checking next one.",
264	device_name);
265	}
266	}
267	}
268	}
269
270	/* go to next supported reader */
271	alias++;
272	}
273	end:
274	if (usbDevice[reader].handle == NULL)
275	return STATUS_UNSUCCESSFUL;
276
277	return STATUS_SUCCESS;
278	} /* OpenUSB */
279
280
281	/*****************************************************************************
282	*
283	* WriteUSB
284	*
285	****************************************************************************/
286	status_t WriteUSB(int lun, int length, unsigned char *buffer)
287	{
288	int rv;
289	int reader = LunToReaderIndex(lun);
290	#ifdef DEBUG_LEVEL_COMM
291	char debug_header[] = "-> 121234 ";
292
293	sprintf(debug_header, "-> %06X ", (int)lun);
294	#endif
295
296	#ifdef DEBUG_LEVEL_COMM
297	DEBUG_XXD(debug_header, buffer, length);
298	#endif
299
300	rv = usb_bulk_write(usbDevice[reader].handle, usbDevice[reader].bulk_out, buffer, length, USB_WRITE_TIMEOUT);
301
302	if (rv < 0)
303	{
304	DEBUG_CRITICAL3("usb_bulk_write(%s): %s",
305	usbDevice[reader].device_name, strerror(errno));
306	return STATUS_UNSUCCESSFUL;
307	}
308
309	return STATUS_SUCCESS;
310	} /* WriteUSB */
311
312
313	/*****************************************************************************
314	*
315	* ReadUSB
316	*
317	****************************************************************************/
318	status_t ReadUSB(int lun, int * length, unsigned char *buffer)
319	{
320	int rv;
321	int reader = LunToReaderIndex(lun);
322	#ifdef DEBUG_LEVEL_COMM
323	char debug_header[] = "<- 121234 ";
324
325	sprintf(debug_header, "<- %06X ", (int)lun);
326	#endif
327
328
329	rv = usb_bulk_read(usbDevice[reader].handle, usbDevice[reader].bulk_in, buffer, *length, USB_READ_TIMEOUT);
330	*length = rv;
331
332	if (rv < 0)
333	{
334	DEBUG_CRITICAL3("usb_bulk_read(%s): %s",
335	usbDevice[reader].device_name, strerror(errno));
336	return STATUS_UNSUCCESSFUL;
337	}
338
339	#ifdef DEBUG_LEVEL_COMM
340	DEBUG_XXD(debug_header, buffer, *length);
341	#endif
342
343	return STATUS_SUCCESS;
344	} /* ReadUSB */
345
346
347	/*****************************************************************************
348	*
349	* CloseUSB
350	*
351	****************************************************************************/
352	status_t CloseUSB(int lun)
353	{
354	int reader = LunToReaderIndex(lun);
355
356	/* device not opened */
357	if (usbDevice[reader].dev == NULL)
358	return STATUS_UNSUCCESSFUL;
359
360	DEBUG_COMM2("Closing USB device: %s", usbDevice[reader].device_name);
361
362	usb_release_interface(usbDevice[reader].handle, usbDevice[reader].dev->config->interface->altsetting->bInterfaceNumber);
363
364	usb_close(usbDevice[reader].handle);
365
366	/* mark the resource unused */
367	usbDevice[reader].handle = NULL;
368	usbDevice[reader].dev = NULL;
369	usbDevice[reader].device_name[0] = '\0';
370
371	return STATUS_SUCCESS;
372	} /* CloseUSB */
373
374
375	/*****************************************************************************
376	*
377	* get_ccid_descriptor
378	*
379	****************************************************************************/
380	_ccid_descriptor *get_ccid_descriptor(int lun)
381	{
382	return &usbDevice[LunToReaderIndex(lun)].ccid;
383	} /* get_ccid_descriptor */
384
385
386	/*****************************************************************************
387	*
388	* get_desc
389	*
390	****************************************************************************/
391	int get_desc(int channel, char device_name[], usb_dev_handle *handle, struct
392	usb_device **dev)
393	{
394	if (channel < 0 \|\| channel > PCSCLITE_MAX_READERS)
395	return 1;
396
397	*device_name = usbDevice[channel].device_name;
398	*handle = usbDevice[channel].handle;
399	*dev = usbDevice[channel].dev;
400
401	return 0;
402	} /* get_desc */
403
404	/*****************************************************************************
405	*
406	* get_end_points
407	*
408	****************************************************************************/
409	int get_end_points(struct usb_device dev, _usbDevice usb_device)
410	{
411	int i;
412	int bEndpointAddress;
413
414	/*
415	* 3 Endpoints maximum: Interrupt In, Bulk In, Bulk Out
416	*/
417	for (i=0; i<3; i++)
418	{
419	if (dev->config->interface->altsetting->endpoint[i].bmAttributes != USB_ENDPOINT_TYPE_BULK)
420	continue;
421
422	bEndpointAddress = dev->config->interface->altsetting->endpoint[i].bEndpointAddress;
423
424	if ((bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_ENDPOINT_IN)
425	usb_device->bulk_in = bEndpointAddress;
426
427	if ((bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_ENDPOINT_OUT)
428	usb_device->bulk_out = bEndpointAddress;
429	}
430
431	return 0;
432	} /* get_end_points */
433
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