419 lines
9.1 KiB
C
419 lines
9.1 KiB
C
/*-
|
|
* SPDX-License-Identifier: Beerware
|
|
*
|
|
* ----------------------------------------------------------------------------
|
|
* "THE BEER-WARE LICENSE" (Revision 42) (by Poul-Henning Kamp):
|
|
* <joerg@FreeBSD.ORG> wrote this file. As long as you retain this notice you
|
|
* can do whatever you want with this stuff. If we meet some day, and you think
|
|
* this stuff is worth it, you can buy me a beer in return. Joerg Wunsch
|
|
* ----------------------------------------------------------------------------
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
/*
|
|
* Simple demo program to illustrate the handling of FreeBSD's
|
|
* libusb20.
|
|
*/
|
|
|
|
/*
|
|
* Examples:
|
|
* Just list all VID:PID pairs
|
|
* ./control
|
|
*
|
|
* Standard device request GET_STATUS, report two bytes of status
|
|
* (bit 0 in the first byte returned is the "self powered" bit)
|
|
* ./control -v 0x3eb -p 0x2103 in std dev get_status 0 0 2
|
|
*
|
|
* Request input reports through the interrupt pipe from a mouse
|
|
* device (move the mouse around after issuing the command):
|
|
* ./control -v 0x093a -p 0x2516 -i 0x81
|
|
*
|
|
*/
|
|
|
|
|
|
#include <limits.h>
|
|
#include <stdbool.h>
|
|
#include <stdio.h>
|
|
#include <stdint.h>
|
|
#include <stdlib.h>
|
|
#include <sysexits.h>
|
|
#include <unistd.h>
|
|
#include <string.h>
|
|
|
|
#include <libusb20.h>
|
|
#include <libusb20_desc.h>
|
|
|
|
#include <sys/queue.h>
|
|
|
|
#include "util.h"
|
|
|
|
/*
|
|
* If you want to see the details of the internal datastructures
|
|
* in the debugger, unifdef the following.
|
|
*/
|
|
#ifdef DEBUG
|
|
# include "/usr/src/lib/libusb/libusb20_int.h"
|
|
#endif
|
|
|
|
#define BUFLEN 64
|
|
|
|
#define TIMEOUT 5000 /* 5 s */
|
|
|
|
int intr_ep; /* endpoints */
|
|
struct LIBUSB20_CONTROL_SETUP_DECODED setup;
|
|
|
|
uint8_t out_buf[BUFLEN];
|
|
uint16_t out_len;
|
|
|
|
bool do_request;
|
|
|
|
static void
|
|
doit(struct libusb20_device *dev)
|
|
{
|
|
int rv;
|
|
|
|
if (do_request)
|
|
printf("doit(): bmRequestType 0x%02x, bRequest 0x%02x, wValue 0x%04x, wIndex 0x%04x, wLength 0x%04x\n",
|
|
setup.bmRequestType,
|
|
setup.bRequest,
|
|
setup.wValue,
|
|
setup.wIndex,
|
|
setup.wLength);
|
|
|
|
/*
|
|
* Open the device, allocating memory for two possible (bulk or
|
|
* interrupt) transfers.
|
|
*
|
|
* If only control transfers are intended (via
|
|
* libusb20_dev_request_sync()), transfer_max can be given as 0.
|
|
*/
|
|
if ((rv = libusb20_dev_open(dev, 1)) != 0)
|
|
{
|
|
fprintf(stderr, "libusb20_dev_open: %s\n", libusb20_strerror(rv));
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* If the device has more than one configuration, select the desired
|
|
* one here.
|
|
*/
|
|
if ((rv = libusb20_dev_set_config_index(dev, 0)) != 0)
|
|
{
|
|
fprintf(stderr, "libusb20_dev_set_config_index: %s\n", libusb20_strerror(rv));
|
|
return;
|
|
}
|
|
|
|
uint8_t *data = 0;
|
|
uint16_t actlen;
|
|
|
|
if ((setup.bmRequestType & 0x80) != 0)
|
|
{
|
|
/* this is an IN request, allocate a buffer */
|
|
data = malloc(setup.wLength);
|
|
if (data == 0)
|
|
{
|
|
fprintf(stderr,
|
|
"Out of memory allocating %u bytes of reply buffer\n",
|
|
setup.wLength);
|
|
return;
|
|
}
|
|
}
|
|
else
|
|
data = out_buf;
|
|
|
|
if (do_request)
|
|
{
|
|
if ((rv = libusb20_dev_request_sync(dev, &setup, data,
|
|
&actlen,
|
|
TIMEOUT,
|
|
0 /* flags */)) != 0)
|
|
{
|
|
fprintf(stderr,
|
|
"libusb20_dev_request_sync: %s\n", libusb20_strerror(rv));
|
|
}
|
|
printf("sent %d bytes\n", actlen);
|
|
if ((setup.bmRequestType & 0x80) != 0)
|
|
{
|
|
print_formatted(data, (uint32_t)setup.wLength);
|
|
free(data);
|
|
}
|
|
}
|
|
|
|
if (intr_ep != 0)
|
|
{
|
|
/*
|
|
* One transfer has been requested in libusb20_dev_open() above;
|
|
* obtain the corresponding transfer struct pointer.
|
|
*/
|
|
struct libusb20_transfer *xfr_intr = libusb20_tr_get_pointer(dev, 0);
|
|
|
|
if (xfr_intr == NULL)
|
|
{
|
|
fprintf(stderr, "libusb20_tr_get_pointer: %s\n", libusb20_strerror(rv));
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Open the interrupt transfer.
|
|
*/
|
|
if ((rv = libusb20_tr_open(xfr_intr, 0, 1, intr_ep)) != 0)
|
|
{
|
|
fprintf(stderr, "libusb20_tr_open: %s\n", libusb20_strerror(rv));
|
|
return;
|
|
}
|
|
|
|
uint8_t in_buf[BUFLEN];
|
|
uint32_t rlen;
|
|
|
|
if ((rv = libusb20_tr_bulk_intr_sync(xfr_intr, in_buf, BUFLEN, &rlen, TIMEOUT))
|
|
!= 0)
|
|
{
|
|
fprintf(stderr, "libusb20_tr_bulk_intr_sync: %s\n", libusb20_strerror(rv));
|
|
}
|
|
printf("received %d bytes\n", rlen);
|
|
if (rlen > 0)
|
|
print_formatted(in_buf, rlen);
|
|
|
|
libusb20_tr_close(xfr_intr);
|
|
}
|
|
|
|
libusb20_dev_close(dev);
|
|
}
|
|
|
|
static void
|
|
usage(void)
|
|
{
|
|
fprintf(stderr,
|
|
"Usage ./usb [-i <INTR_EP>] -v <VID> -p <PID> [dir type rcpt req wValue wIndex wLength [<outdata> ...]]\n");
|
|
exit(EX_USAGE);
|
|
}
|
|
|
|
static const char *reqnames[] =
|
|
{
|
|
"get_status",
|
|
"clear_feature",
|
|
"res1",
|
|
"set_feature",
|
|
"res2",
|
|
"set_address",
|
|
"get_descriptor",
|
|
"set_descriptor",
|
|
"get_configuration",
|
|
"set_configuration",
|
|
"get_interface",
|
|
"set_interface",
|
|
"synch_frame",
|
|
};
|
|
|
|
static int
|
|
get_req(const char *reqname)
|
|
{
|
|
size_t i;
|
|
size_t l = strlen(reqname);
|
|
|
|
for (i = 0;
|
|
i < sizeof reqnames / sizeof reqnames[0];
|
|
i++)
|
|
if (strncasecmp(reqname, reqnames[i], l) == 0)
|
|
return i;
|
|
|
|
return strtoul(reqname, 0, 0);
|
|
}
|
|
|
|
|
|
static int
|
|
parse_req(int argc, char **argv)
|
|
{
|
|
int idx;
|
|
uint8_t rt = 0;
|
|
|
|
for (idx = 0; argc != 0 && idx <= 6; argc--, idx++)
|
|
switch (idx)
|
|
{
|
|
case 0:
|
|
/* dir[ection]: i[n] | o[ut] */
|
|
if (*argv[idx] == 'i')
|
|
rt |= 0x80;
|
|
else if (*argv[idx] == 'o')
|
|
/* nop */;
|
|
else
|
|
{
|
|
fprintf(stderr, "request direction must be \"in\" or \"out\" (got %s)\n",
|
|
argv[idx]);
|
|
return -1;
|
|
}
|
|
break;
|
|
|
|
case 1:
|
|
/* type: s[tandard] | c[lass] | v[endor] */
|
|
if (*argv[idx] == 's')
|
|
/* nop */;
|
|
else if (*argv[idx] == 'c')
|
|
rt |= 0x20;
|
|
else if (*argv[idx] == 'v')
|
|
rt |= 0x40;
|
|
else
|
|
{
|
|
fprintf(stderr,
|
|
"request type must be one of \"standard\", \"class\", or \"vendor\" (got %s)\n",
|
|
argv[idx]);
|
|
return -1;
|
|
}
|
|
break;
|
|
|
|
case 2:
|
|
/* rcpt: d[evice], i[nterface], e[ndpoint], o[ther] */
|
|
if (*argv[idx] == 'd')
|
|
/* nop */;
|
|
else if (*argv[idx] == 'i')
|
|
rt |= 1;
|
|
else if (*argv[idx] == 'e')
|
|
rt |= 2;
|
|
else if (*argv[idx] == 'o')
|
|
rt |= 3;
|
|
else
|
|
{
|
|
fprintf(stderr,
|
|
"recipient must be one of \"device\", \"interface\", \"endpoint\", or \"other\" (got %s)\n",
|
|
argv[idx]);
|
|
return -1;
|
|
}
|
|
setup.bmRequestType = rt;
|
|
break;
|
|
|
|
case 3:
|
|
setup.bRequest = get_req(argv[idx]);
|
|
break;
|
|
|
|
case 4:
|
|
setup.wValue = strtoul(argv[idx], 0, 0);
|
|
break;
|
|
|
|
case 5:
|
|
setup.wIndex = strtoul(argv[idx], 0, 0);
|
|
break;
|
|
|
|
case 6:
|
|
setup.wLength = strtoul(argv[idx], 0, 0);
|
|
break;
|
|
}
|
|
|
|
return argc;
|
|
}
|
|
|
|
|
|
int
|
|
main(int argc, char **argv)
|
|
{
|
|
unsigned int vid = UINT_MAX, pid = UINT_MAX; /* impossible VID:PID */
|
|
int c;
|
|
|
|
/*
|
|
* Initialize setup struct. This step is required, and initializes
|
|
* internal fields in the struct.
|
|
*
|
|
* All the "public" fields are named exactly the way as the USB
|
|
* standard describes them, namely:
|
|
*
|
|
* setup.bmRequestType: bitmask, bit 7 is direction
|
|
* bits 6/5 is request type
|
|
* (standard, class, vendor)
|
|
* bits 4..0 is recipient
|
|
* (device, interface, endpoint,
|
|
* other)
|
|
* setup.bRequest: the request itself (see get_req() for standard
|
|
* requests, or specific value)
|
|
* setup.wValue: a 16-bit value
|
|
* setup.wIndex: another 16-bit value
|
|
* setup.wLength: length of associated data transfer, direction
|
|
* depends on bit 7 of bmRequestType
|
|
*/
|
|
LIBUSB20_INIT(LIBUSB20_CONTROL_SETUP, &setup);
|
|
|
|
while ((c = getopt(argc, argv, "i:p:v:")) != -1)
|
|
switch (c)
|
|
{
|
|
case 'i':
|
|
intr_ep = strtol(optarg, NULL, 0);
|
|
break;
|
|
|
|
case 'p':
|
|
pid = strtol(optarg, NULL, 0);
|
|
break;
|
|
|
|
case 'v':
|
|
vid = strtol(optarg, NULL, 0);
|
|
break;
|
|
|
|
default:
|
|
usage();
|
|
break;
|
|
}
|
|
argc -= optind;
|
|
argv += optind;
|
|
|
|
if (vid != UINT_MAX || pid != UINT_MAX)
|
|
{
|
|
if (intr_ep != 0 && (intr_ep & 0x80) == 0)
|
|
{
|
|
fprintf(stderr, "Interrupt endpoint must be of type IN\n");
|
|
usage();
|
|
}
|
|
|
|
if (argc > 0)
|
|
{
|
|
do_request = true;
|
|
|
|
int rv = parse_req(argc, argv);
|
|
if (rv < 0)
|
|
return EX_USAGE;
|
|
argc = rv;
|
|
|
|
if (argc > 0)
|
|
{
|
|
for (out_len = 0; argc > 0 && out_len < BUFLEN; out_len++, argc--)
|
|
{
|
|
unsigned n = strtoul(argv[out_len], 0, 0);
|
|
if (n > 255)
|
|
fprintf(stderr,
|
|
"Warning: data #%d 0x%0x > 0xff, truncating\n",
|
|
out_len, n);
|
|
out_buf[out_len] = (uint8_t)n;
|
|
}
|
|
out_len++;
|
|
if (argc > 0)
|
|
fprintf(stderr,
|
|
"Data count exceeds maximum of %d, ignoring %d elements\n",
|
|
BUFLEN, optind);
|
|
}
|
|
}
|
|
}
|
|
|
|
struct libusb20_backend *be;
|
|
struct libusb20_device *dev;
|
|
|
|
if ((be = libusb20_be_alloc_default()) == NULL)
|
|
{
|
|
perror("libusb20_be_alloc()");
|
|
return 1;
|
|
}
|
|
|
|
dev = NULL;
|
|
while ((dev = libusb20_be_device_foreach(be, dev)) != NULL)
|
|
{
|
|
struct LIBUSB20_DEVICE_DESC_DECODED *ddp =
|
|
libusb20_dev_get_device_desc(dev);
|
|
|
|
printf("Found device %s (VID:PID = 0x%04x:0x%04x)\n",
|
|
libusb20_dev_get_desc(dev),
|
|
ddp->idVendor, ddp->idProduct);
|
|
|
|
if (ddp->idVendor == vid && ddp->idProduct == pid)
|
|
doit(dev);
|
|
}
|
|
|
|
libusb20_be_free(be);
|
|
return 0;
|
|
}
|