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Code Issues Releases Wiki Activity

re-enable WebUSB

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This reverts commit "Revert WinUSB feature"
b20336e82d
This commit is contained in:
Pavol Rusnak 2018-08-27 17:22:04 +02:00
parent c2fa3d8fca
commit 4da73df57d
No known key found for this signature in database
GPG Key ID: 91F3B339B9A02A3D
10 changed files with 612 additions and 244 deletions
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4
Makefile
View File

@ -20,6 +20,10 @@ ifneq ($(EMULATOR),1)
OBJS += timer.o
endif
OBJS += usb21_standard.o
OBJS += webusb.o
OBJS += winusb.o
OBJS += gen/bitmaps.o
OBJS += gen/fonts.o

124
bootloader/usb.c
View File

@ -18,7 +18,6 @@
*/
#include <libopencm3/usb/usbd.h>
#include <libopencm3/usb/hid.h>
#include <libopencm3/stm32/flash.h>
#include <string.h>
@ -37,8 +36,14 @@
#include "secp256k1.h"
#include "memzero.h"
#include "usb21_standard.h"
#include "webusb.h"
#include "winusb.h"
#define FIRMWARE_MAGIC "TRZR"
#define USB_INTERFACE_INDEX_MAIN 0
#define ENDPOINT_ADDRESS_IN (0x81)
#define ENDPOINT_ADDRESS_OUT (0x01)
@ -48,60 +53,21 @@ static bool old_was_unsigned;
static const struct usb_device_descriptor dev_descr = {
.bLength = USB_DT_DEVICE_SIZE,
.bDescriptorType = USB_DT_DEVICE,
.bcdUSB = 0x0200,
.bcdUSB = 0x0210,
.bDeviceClass = 0,
.bDeviceSubClass = 0,
.bDeviceProtocol = 0,
.bMaxPacketSize0 = 64,
.idVendor = 0x534c,
.idProduct = 0x0001,
.bcdDevice = 0x0100,
.bcdDevice = 0x0300,
.iManufacturer = 1,
.iProduct = 2,
.iSerialNumber = 3,
.bNumConfigurations = 1,
};
static const uint8_t hid_report_descriptor[] = {
0x06, 0x00, 0xff, // USAGE_PAGE (Vendor Defined)
0x09, 0x01, // USAGE (1)
0xa1, 0x01, // COLLECTION (Application)
0x09, 0x20, // USAGE (Input Report Data)
0x15, 0x00, // LOGICAL_MINIMUM (0)
0x26, 0xff, 0x00, // LOGICAL_MAXIMUM (255)
0x75, 0x08, // REPORT_SIZE (8)
0x95, 0x40, // REPORT_COUNT (64)
0x81, 0x02, // INPUT (Data,Var,Abs)
0x09, 0x21, // USAGE (Output Report Data)
0x15, 0x00, // LOGICAL_MINIMUM (0)
0x26, 0xff, 0x00, // LOGICAL_MAXIMUM (255)
0x75, 0x08, // REPORT_SIZE (8)
0x95, 0x40, // REPORT_COUNT (64)
0x91, 0x02, // OUTPUT (Data,Var,Abs)
0xc0 // END_COLLECTION
};
static const struct {
struct usb_hid_descriptor hid_descriptor;
struct {
uint8_t bReportDescriptorType;
uint16_t wDescriptorLength;
} __attribute__((packed)) hid_report;
} __attribute__((packed)) hid_function = {
.hid_descriptor = {
.bLength = sizeof(hid_function),
.bDescriptorType = USB_DT_HID,
.bcdHID = 0x0111,
.bCountryCode = 0,
.bNumDescriptors = 1,
},
.hid_report = {
.bReportDescriptorType = USB_DT_REPORT,
.wDescriptorLength = sizeof(hid_report_descriptor),
}
};
static const struct usb_endpoint_descriptor hid_endpoints[2] = {{
static const struct usb_endpoint_descriptor endpoints[2] = {{
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
.bEndpointAddress = ENDPOINT_ADDRESS_IN,
@ -117,24 +83,24 @@ static const struct usb_endpoint_descriptor hid_endpoints[2] = {{
.bInterval = 1,
}};
static const struct usb_interface_descriptor hid_iface[] = {{
static const struct usb_interface_descriptor iface[] = {{
.bLength = USB_DT_INTERFACE_SIZE,
.bDescriptorType = USB_DT_INTERFACE,
.bInterfaceNumber = 0,
.bInterfaceNumber = USB_INTERFACE_INDEX_MAIN,
.bAlternateSetting = 0,
.bNumEndpoints = 2,
.bInterfaceClass = USB_CLASS_HID,
.bInterfaceClass = USB_CLASS_VENDOR,
.bInterfaceSubClass = 0,
.bInterfaceProtocol = 0,
.iInterface = 0,
.endpoint = hid_endpoints,
.extra = &hid_function,
.extralen = sizeof(hid_function),
.endpoint = endpoints,
.extra = NULL,
.extralen = 0,
}};
static const struct usb_interface ifaces[] = {{
.num_altsetting = 1,
.altsetting = hid_iface,
.altsetting = iface,
}};
static const struct usb_config_descriptor config = {
@ -155,23 +121,6 @@ static const char *usb_strings[] = {
"", // empty serial
};
static int hid_control_request(usbd_device *dev, struct usb_setup_data *req, uint8_t **buf, uint16_t *len, usbd_control_complete_callback *complete)
{
(void)complete;
(void)dev;
if ((req->bmRequestType != 0x81) ||
(req->bRequest != USB_REQ_GET_DESCRIPTOR) ||
(req->wValue != 0x2200))
return 0;
/* Handle the HID report descriptor. */
*buf = (uint8_t *)hid_report_descriptor;
*len = sizeof(hid_report_descriptor);
return 1;
}
enum {
STATE_READY,
STATE_OPEN,
@ -315,7 +264,7 @@ static void restore_metadata(const uint8_t *backup)
flash_lock();
}
static void hid_rx_callback(usbd_device *dev, uint8_t ep)
static void rx_callback(usbd_device *dev, uint8_t ep)
{
(void)ep;
static uint8_t buf[64] __attribute__((aligned(4)));
@ -665,23 +614,37 @@ static void hid_rx_callback(usbd_device *dev, uint8_t ep)
}
static void hid_set_config(usbd_device *dev, uint16_t wValue)
static void set_config(usbd_device *dev, uint16_t wValue)
{
(void)wValue;
usbd_ep_setup(dev, ENDPOINT_ADDRESS_IN, USB_ENDPOINT_ATTR_INTERRUPT, 64, 0);
usbd_ep_setup(dev, ENDPOINT_ADDRESS_OUT, USB_ENDPOINT_ATTR_INTERRUPT, 64, hid_rx_callback);
usbd_register_control_callback(
dev,
USB_REQ_TYPE_STANDARD | USB_REQ_TYPE_INTERFACE,
USB_REQ_TYPE_TYPE | USB_REQ_TYPE_RECIPIENT,
hid_control_request
);
usbd_ep_setup(dev, ENDPOINT_ADDRESS_IN, USB_ENDPOINT_ATTR_INTERRUPT, 64, 0);
usbd_ep_setup(dev, ENDPOINT_ADDRESS_OUT, USB_ENDPOINT_ATTR_INTERRUPT, 64, rx_callback);
}
static usbd_device *usbd_dev;
static uint8_t usbd_control_buffer[128];
static uint8_t usbd_control_buffer[256] __attribute__ ((aligned (2)));
static const struct usb_device_capability_descriptor* capabilities[] = {
(const struct usb_device_capability_descriptor*)&webusb_platform_capability_descriptor,
};
static const struct usb_bos_descriptor bos_descriptor = {
.bLength = USB_DT_BOS_SIZE,
.bDescriptorType = USB_DT_BOS,
.bNumDeviceCaps = sizeof(capabilities)/sizeof(capabilities[0]),
.capabilities = capabilities
};
void usbInit(void)
{
usbd_dev = usbd_init(&otgfs_usb_driver, &dev_descr, &config, usb_strings, sizeof(usb_strings)/sizeof(const char *), usbd_control_buffer, sizeof(usbd_control_buffer));
usbd_register_set_config_callback(usbd_dev, set_config);
usb21_setup(usbd_dev, &bos_descriptor);
static const char* origin_url = "trezor.io/start";
webusb_setup(usbd_dev, origin_url);
winusb_setup(usbd_dev, USB_INTERFACE_INDEX_MAIN);
}
void checkButtons(void)
{
@ -715,8 +678,7 @@ void checkButtons(void)
void usbLoop(bool firmware_present)
{
brand_new_firmware = !firmware_present;
usbd_dev = usbd_init(&otgfs_usb_driver, &dev_descr, &config, usb_strings, 3, usbd_control_buffer, sizeof(usbd_control_buffer));
usbd_register_set_config_callback(usbd_dev, hid_set_config);
usbInit();
for (;;) {
usbd_poll(usbd_dev);
if (brand_new_firmware && (flash_state == STATE_READY || flash_state == STATE_OPEN)) {

245
firmware/usb.c
View File

@ -29,18 +29,27 @@
#include "util.h"
#include "timer.h"
#include "usb21_standard.h"
#include "webusb.h"
#include "winusb.h"
#define USB_INTERFACE_INDEX_MAIN 0
#if DEBUG_LINK
#define USB_INTERFACE_INDEX_DEBUG 1
#define USB_INTERFACE_INDEX_U2F 2
#define USB_INTERFACE_COUNT 3
#else
#define USB_INTERFACE_INDEX_U2F 1
#define USB_INTERFACE_COUNT 2
#endif
#define ENDPOINT_ADDRESS_IN (0x81)
#define ENDPOINT_ADDRESS_OUT (0x01)
#define ENDPOINT_ADDRESS_MAIN_IN (0x81)
#define ENDPOINT_ADDRESS_MAIN_OUT (0x01)
#if DEBUG_LINK
#define ENDPOINT_ADDRESS_DEBUG_IN (0x82)
#define ENDPOINT_ADDRESS_DEBUG_OUT (0x02)
#endif
#define ENDPOINT_ADDRESS_U2F_IN (0x83)
#define ENDPOINT_ADDRESS_U2F_OUT (0x03)
@ -50,7 +59,7 @@
X(SERIAL_NUMBER, storage_uuid_str) \
X(INTERFACE_MAIN, "TREZOR Interface") \
X(INTERFACE_DEBUG, "TREZOR Debug Link Interface") \
X(INTERFACE_U2F, "U2F Interface")
X(INTERFACE_U2F, "TREZOR U2F Interface") \
#define X(name, value) USB_STRING_##name,
enum {
@ -68,60 +77,20 @@ static const char *usb_strings[] = {
static const struct usb_device_descriptor dev_descr = {
.bLength = USB_DT_DEVICE_SIZE,
.bDescriptorType = USB_DT_DEVICE,
.bcdUSB = 0x0200,
.bcdUSB = 0x0210,
.bDeviceClass = 0,
.bDeviceSubClass = 0,
.bDeviceProtocol = 0,
.bMaxPacketSize0 = 64,
.idVendor = 0x534c,
.idProduct = 0x0001,
.bcdDevice = 0x0100,
.bcdDevice = 0x0200,
.iManufacturer = USB_STRING_MANUFACTURER,
.iProduct = USB_STRING_PRODUCT,
.iSerialNumber = USB_STRING_SERIAL_NUMBER,
.bNumConfigurations = 1,
};
static const uint8_t hid_report_descriptor[] = {
0x06, 0x00, 0xff, // USAGE_PAGE (Vendor Defined)
0x09, 0x01, // USAGE (1)
0xa1, 0x01, // COLLECTION (Application)
0x09, 0x20, // USAGE (Input Report Data)
0x15, 0x00, // LOGICAL_MINIMUM (0)
0x26, 0xff, 0x00, // LOGICAL_MAXIMUM (255)
0x75, 0x08, // REPORT_SIZE (8)
0x95, 0x40, // REPORT_COUNT (64)
0x81, 0x02, // INPUT (Data,Var,Abs)
0x09, 0x21, // USAGE (Output Report Data)
0x15, 0x00, // LOGICAL_MINIMUM (0)
0x26, 0xff, 0x00, // LOGICAL_MAXIMUM (255)
0x75, 0x08, // REPORT_SIZE (8)
0x95, 0x40, // REPORT_COUNT (64)
0x91, 0x02, // OUTPUT (Data,Var,Abs)
0xc0 // END_COLLECTION
};
#if DEBUG_LINK
static const uint8_t hid_report_descriptor_debug[] = {
0x06, 0x01, 0xff, // USAGE_PAGE (Vendor Defined)
0x09, 0x01, // USAGE (1)
0xa1, 0x01, // COLLECTION (Application)
0x09, 0x20, // USAGE (Input Report Data)
0x15, 0x00, // LOGICAL_MINIMUM (0)
0x26, 0xff, 0x00, // LOGICAL_MAXIMUM (255)
0x75, 0x08, // REPORT_SIZE (8)
0x95, 0x40, // REPORT_COUNT (64)
0x81, 0x02, // INPUT (Data,Var,Abs)
0x09, 0x21, // USAGE (Output Report Data)
0x15, 0x00, // LOGICAL_MINIMUM (0)
0x26, 0xff, 0x00, // LOGICAL_MAXIMUM (255)
0x75, 0x08, // REPORT_SIZE (8)
0x95, 0x40, // REPORT_COUNT (64)
0x91, 0x02, // OUTPUT (Data,Var,Abs)
0xc0 // END_COLLECTION
};
#endif
static const uint8_t hid_report_descriptor_u2f[] = {
0x06, 0xd0, 0xf1, // USAGE_PAGE (FIDO Alliance)
0x09, 0x01, // USAGE (U2F HID Authenticator Device)
@ -141,26 +110,6 @@ static const uint8_t hid_report_descriptor_u2f[] = {
0xc0 // END_COLLECTION
};
static const struct {
struct usb_hid_descriptor hid_descriptor;
struct {
uint8_t bReportDescriptorType;
uint16_t wDescriptorLength;
} __attribute__((packed)) hid_report;
} __attribute__((packed)) hid_function = {
.hid_descriptor = {
.bLength = sizeof(hid_function),
.bDescriptorType = USB_DT_HID,
.bcdHID = 0x0111,
.bCountryCode = 0,
.bNumDescriptors = 1,
},
.hid_report = {
.bReportDescriptorType = USB_DT_REPORT,
.wDescriptorLength = sizeof(hid_report_descriptor),
}
};
static const struct {
struct usb_hid_descriptor hid_descriptor_u2f;
struct {
@ -181,52 +130,20 @@ static const struct {
}
};
static const struct usb_endpoint_descriptor hid_endpoints[2] = {{
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
.bEndpointAddress = ENDPOINT_ADDRESS_IN,
.bmAttributes = USB_ENDPOINT_ATTR_INTERRUPT,
.wMaxPacketSize = 64,
.bInterval = 1,
}, {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
.bEndpointAddress = ENDPOINT_ADDRESS_OUT,
.bmAttributes = USB_ENDPOINT_ATTR_INTERRUPT,
.wMaxPacketSize = 64,
.bInterval = 1,
}};
static const struct usb_interface_descriptor hid_iface[] = {{
.bLength = USB_DT_INTERFACE_SIZE,
.bDescriptorType = USB_DT_INTERFACE,
.bInterfaceNumber = USB_INTERFACE_INDEX_MAIN,
.bAlternateSetting = 0,
.bNumEndpoints = 2,
.bInterfaceClass = USB_CLASS_HID,
.bInterfaceSubClass = 0,
.bInterfaceProtocol = 0,
.iInterface = USB_STRING_INTERFACE_MAIN,
.endpoint = hid_endpoints,
.extra = &hid_function,
.extralen = sizeof(hid_function),
}};
static const struct usb_endpoint_descriptor hid_endpoints_u2f[2] = {{
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
.bEndpointAddress = ENDPOINT_ADDRESS_U2F_IN,
.bmAttributes = USB_ENDPOINT_ATTR_INTERRUPT,
.wMaxPacketSize = 64,
.bInterval = 2,
.bInterval = 1,
}, {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
.bEndpointAddress = ENDPOINT_ADDRESS_U2F_OUT,
.bmAttributes = USB_ENDPOINT_ATTR_INTERRUPT,
.wMaxPacketSize = 64,
.bInterval = 2,
.bInterval = 1,
}};
static const struct usb_interface_descriptor hid_iface_u2f[] = {{
@ -245,7 +162,7 @@ static const struct usb_interface_descriptor hid_iface_u2f[] = {{
}};
#if DEBUG_LINK
static const struct usb_endpoint_descriptor hid_endpoints_debug[2] = {{
static const struct usb_endpoint_descriptor webusb_endpoints_debug[2] = {{
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
.bEndpointAddress = ENDPOINT_ADDRESS_DEBUG_IN,
@ -261,29 +178,64 @@ static const struct usb_endpoint_descriptor hid_endpoints_debug[2] = {{
.bInterval = 1,
}};
static const struct usb_interface_descriptor hid_iface_debug[] = {{
static const struct usb_interface_descriptor webusb_iface_debug[] = {{
.bLength = USB_DT_INTERFACE_SIZE,
.bDescriptorType = USB_DT_INTERFACE,
.bInterfaceNumber = USB_INTERFACE_INDEX_DEBUG,
.bAlternateSetting = 0,
.bNumEndpoints = 2,
.bInterfaceClass = USB_CLASS_HID,
.bInterfaceClass = USB_CLASS_VENDOR,
.bInterfaceSubClass = 0,
.bInterfaceProtocol = 0,
.iInterface = USB_STRING_INTERFACE_DEBUG,
.endpoint = hid_endpoints_debug,
.extra = &hid_function,
.extralen = sizeof(hid_function),
.endpoint = webusb_endpoints_debug,
.extra = NULL,
.extralen = 0,
}};
#endif
static const struct usb_endpoint_descriptor webusb_endpoints_main[2] = {{
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
.bEndpointAddress = ENDPOINT_ADDRESS_MAIN_IN,
.bmAttributes = USB_ENDPOINT_ATTR_INTERRUPT,
.wMaxPacketSize = 64,
.bInterval = 1,
}, {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
.bEndpointAddress = ENDPOINT_ADDRESS_MAIN_OUT,
.bmAttributes = USB_ENDPOINT_ATTR_INTERRUPT,
.wMaxPacketSize = 64,
.bInterval = 1,
}};
static const struct usb_interface_descriptor webusb_iface_main[] = {{
.bLength = USB_DT_INTERFACE_SIZE,
.bDescriptorType = USB_DT_INTERFACE,
.bInterfaceNumber = USB_INTERFACE_INDEX_MAIN,
.bAlternateSetting = 0,
.bNumEndpoints = 2,
.bInterfaceClass = USB_CLASS_VENDOR,
.bInterfaceSubClass = 0,
.bInterfaceProtocol = 0,
.iInterface = USB_STRING_INTERFACE_MAIN,
.endpoint = webusb_endpoints_main,
.extra = NULL,
.extralen = 0,
}};
// Windows are strict about interfaces appearing
// in correct order
static const struct usb_interface ifaces[] = {{
.num_altsetting = 1,
.altsetting = hid_iface,
.altsetting = webusb_iface_main,
#if DEBUG_LINK
}, {
.num_altsetting = 1,
.altsetting = hid_iface_debug,
.altsetting = webusb_iface_debug,
#endif
}, {
.num_altsetting = 1,
@ -294,11 +246,7 @@ static const struct usb_config_descriptor config = {
.bLength = USB_DT_CONFIGURATION_SIZE,
.bDescriptorType = USB_DT_CONFIGURATION,
.wTotalLength = 0,
#if DEBUG_LINK
.bNumInterfaces = 3,
#else
.bNumInterfaces = 2,
#endif
.bNumInterfaces = USB_INTERFACE_COUNT,
.bConfigurationValue = 1,
.iConfiguration = 0,
.bmAttributes = 0x80,
@ -312,40 +260,24 @@ static int hid_control_request(usbd_device *dev, struct usb_setup_data *req, uin
(void)dev;
if ((req->bmRequestType != 0x81) ||
(req->bRequest != USB_REQ_GET_DESCRIPTOR) ||
(req->wValue != 0x2200))
(req->bRequest != USB_REQ_GET_DESCRIPTOR) ||
(req->wValue != 0x2200))
return 0;
if (req->wIndex == USB_INTERFACE_INDEX_U2F) {
debugLog(0, "", "hid_control_request u2f");
*buf = (uint8_t *)hid_report_descriptor_u2f;
*len = sizeof(hid_report_descriptor_u2f);
return 1;
}
#if DEBUG_LINK
if (req->wIndex == USB_INTERFACE_INDEX_DEBUG) {
debugLog(0, "", "hid_control_request debug");
*buf = (uint8_t *)hid_report_descriptor_debug;
*len = sizeof(hid_report_descriptor_debug);
return 1;
}
#endif
debugLog(0, "", "hid_control_request main");
*buf = (uint8_t *)hid_report_descriptor;
*len = sizeof(hid_report_descriptor);
debugLog(0, "", "hid_control_request u2f");
*buf = (uint8_t *)hid_report_descriptor_u2f;
*len = MIN(*len, sizeof(hid_report_descriptor_u2f));
return 1;
}
static volatile char tiny = 0;
static void hid_rx_callback(usbd_device *dev, uint8_t ep)
static void main_rx_callback(usbd_device *dev, uint8_t ep)
{
(void)ep;
static CONFIDENTIAL uint8_t buf[64] __attribute__ ((aligned(4)));
if ( usbd_ep_read_packet(dev, ENDPOINT_ADDRESS_OUT, buf, 64) != 64) return;
debugLog(0, "", "hid_rx_callback");
if ( usbd_ep_read_packet(dev, ENDPOINT_ADDRESS_MAIN_OUT, buf, 64) != 64) return;
debugLog(0, "", "main_rx_callback");
if (!tiny) {
msg_read(buf, 64);
} else {
@ -353,23 +285,23 @@ static void hid_rx_callback(usbd_device *dev, uint8_t ep)
}
}
static void hid_u2f_rx_callback(usbd_device *dev, uint8_t ep)
static void u2f_rx_callback(usbd_device *dev, uint8_t ep)
{
(void)ep;
static CONFIDENTIAL uint8_t buf[64] __attribute__ ((aligned(4)));
debugLog(0, "", "hid_u2f_rx_callback");
debugLog(0, "", "u2f_rx_callback");
if ( usbd_ep_read_packet(dev, ENDPOINT_ADDRESS_U2F_OUT, buf, 64) != 64) return;
u2fhid_read(tiny, (const U2FHID_FRAME *) (void*) buf);
}
#if DEBUG_LINK
static void hid_debug_rx_callback(usbd_device *dev, uint8_t ep)
static void debug_rx_callback(usbd_device *dev, uint8_t ep)
{
(void)ep;
static CONFIDENTIAL uint8_t buf[64] __attribute__ ((aligned(4)));
if ( usbd_ep_read_packet(dev, ENDPOINT_ADDRESS_DEBUG_OUT, buf, 64) != 64) return;
debugLog(0, "", "hid_debug_rx_callback");
debugLog(0, "", "debug_rx_callback");
if (!tiny) {
msg_debug_read(buf, 64);
} else {
@ -378,17 +310,17 @@ static void hid_debug_rx_callback(usbd_device *dev, uint8_t ep)
}
#endif
static void hid_set_config(usbd_device *dev, uint16_t wValue)
static void set_config(usbd_device *dev, uint16_t wValue)
{
(void)wValue;
usbd_ep_setup(dev, ENDPOINT_ADDRESS_IN, USB_ENDPOINT_ATTR_INTERRUPT, 64, 0);
usbd_ep_setup(dev, ENDPOINT_ADDRESS_OUT, USB_ENDPOINT_ATTR_INTERRUPT, 64, hid_rx_callback);
usbd_ep_setup(dev, ENDPOINT_ADDRESS_MAIN_IN, USB_ENDPOINT_ATTR_INTERRUPT, 64, 0);
usbd_ep_setup(dev, ENDPOINT_ADDRESS_MAIN_OUT, USB_ENDPOINT_ATTR_INTERRUPT, 64, main_rx_callback);
usbd_ep_setup(dev, ENDPOINT_ADDRESS_U2F_IN, USB_ENDPOINT_ATTR_INTERRUPT, 64, 0);
usbd_ep_setup(dev, ENDPOINT_ADDRESS_U2F_OUT, USB_ENDPOINT_ATTR_INTERRUPT, 64, hid_u2f_rx_callback);
usbd_ep_setup(dev, ENDPOINT_ADDRESS_U2F_OUT, USB_ENDPOINT_ATTR_INTERRUPT, 64, u2f_rx_callback);
#if DEBUG_LINK
usbd_ep_setup(dev, ENDPOINT_ADDRESS_DEBUG_IN, USB_ENDPOINT_ATTR_INTERRUPT, 64, 0);
usbd_ep_setup(dev, ENDPOINT_ADDRESS_DEBUG_OUT, USB_ENDPOINT_ATTR_INTERRUPT, 64, hid_debug_rx_callback);
usbd_ep_setup(dev, ENDPOINT_ADDRESS_DEBUG_OUT, USB_ENDPOINT_ATTR_INTERRUPT, 64, debug_rx_callback);
#endif
usbd_register_control_callback(
@ -399,12 +331,29 @@ static void hid_set_config(usbd_device *dev, uint16_t wValue)
}
static usbd_device *usbd_dev;
static uint8_t usbd_control_buffer[128];
static uint8_t usbd_control_buffer[256] __attribute__ ((aligned (2)));
static const struct usb_device_capability_descriptor* capabilities[] = {
(const struct usb_device_capability_descriptor*)&webusb_platform_capability_descriptor,
};
static const struct usb_bos_descriptor bos_descriptor = {
.bLength = USB_DT_BOS_SIZE,
.bDescriptorType = USB_DT_BOS,
.bNumDeviceCaps = sizeof(capabilities)/sizeof(capabilities[0]),
.capabilities = capabilities
};
void usbInit(void)
{
usbd_dev = usbd_init(&otgfs_usb_driver, &dev_descr, &config, usb_strings, sizeof(usb_strings) / sizeof(*usb_strings), usbd_control_buffer, sizeof(usbd_control_buffer));
usbd_register_set_config_callback(usbd_dev, hid_set_config);
usbd_register_set_config_callback(usbd_dev, set_config);
usb21_setup(usbd_dev, &bos_descriptor);
static const char* origin_url = "trezor.io/start";
webusb_setup(usbd_dev, origin_url);
// Debug link interface does not have WinUSB set;
// if you really need debug link on windows, edit the descriptor in winusb.c
winusb_setup(usbd_dev, USB_INTERFACE_INDEX_MAIN);
}
void usbPoll(void)
@ -415,7 +364,7 @@ void usbPoll(void)
// write pending data
data = msg_out_data();
if (data) {
while ( usbd_ep_write_packet(usbd_dev, ENDPOINT_ADDRESS_IN, data, 64) != 64 ) {}
while ( usbd_ep_write_packet(usbd_dev, ENDPOINT_ADDRESS_MAIN_IN, data, 64) != 64 ) {}
}
data = u2f_out_data();
if (data) {

17
usb21_standard.h
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@ -22,10 +22,8 @@
#include <libopencm3/usb/usbd.h>
/* USB 3.1 Descriptor Types - Table 9-6 */
#define USB_DT_BOS 15
#define USB_DT_BOS 15
#define USB_DT_DEVICE_CAPABILITY 16
#define USB_DT_SUPERSPEED_USB_ENDPOINT_COMPANION 48
#define USB_DT_SUPERSPEEDPLUS_ISOCHRONOUS_ENDPOINT_COMPANION 49
struct usb_device_capability_descriptor {
uint8_t bLength;
@ -45,18 +43,7 @@ struct usb_bos_descriptor {
#define USB_DT_BOS_SIZE 5
/* USB Device Capability Types - USB 3.1 Table 9-14 */
#define USB_DC_WIRELESS_USB 1
#define USB_DC_USB_2_0_EXTENSION 2
#define USB_DC_SUPERSPEED_USB 3
#define USB_DC_CONTAINER_ID 4
#define USB_DC_PLATFORM 5
#define USB_DC_POWER_DELIVERY_CAPABILITY 6
#define USB_DC_BATTERY_INFO_CAPABILITY 7
#define USB_DC_PD_CONSUMER_PORT_CAPABILITY 8
#define USB_DC_PD_PROVIDER_PORT_CAPABILITY 9
#define USB_DC_SUPERSPEED_PLUS 10
#define USB_DC_PRECISION_TIME_MEASUREMENT 11
#define USB_DC_WIRELESS_USB_EXT 12
#define USB_DC_PLATFORM 5
extern void usb21_setup(usbd_device* usbd_dev, const struct usb_bos_descriptor* binary_object_store);

94
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/*
* Copyright (c) 2016, Devan Lai
*
* Permission to use, copy, modify, and/or distribute this software
* for any purpose with or without fee is hereby granted, provided
* that the above copyright notice and this permission notice
* appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
* WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
* AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
* NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <string.h>
#include "util.h"
#include "webusb.h"
#include "usb21_standard.h"
const struct webusb_platform_descriptor webusb_platform_capability_descriptor = {
.bLength = WEBUSB_PLATFORM_DESCRIPTOR_SIZE,
.bDescriptorType = USB_DT_DEVICE_CAPABILITY,
.bDevCapabilityType = USB_DC_PLATFORM,
.bReserved = 0,
.platformCapabilityUUID = WEBUSB_UUID,
.bcdVersion = 0x0100,
.bVendorCode = WEBUSB_VENDOR_CODE,
.iLandingPage = 1
};
static const char* webusb_https_url;
static int webusb_control_vendor_request(usbd_device *usbd_dev,
struct usb_setup_data *req,
uint8_t **buf, uint16_t *len,
usbd_control_complete_callback* complete) {
(void)complete;
(void)usbd_dev;
if (req->bRequest != WEBUSB_VENDOR_CODE) {
return USBD_REQ_NEXT_CALLBACK;
}
int status = USBD_REQ_NOTSUPP;
switch (req->wIndex) {
case WEBUSB_REQ_GET_URL: {
struct webusb_url_descriptor* url = (struct webusb_url_descriptor*)(*buf);
uint16_t index = req->wValue;
if (index == 0) {
return USBD_REQ_NOTSUPP;
}
if (index == 1) {
size_t url_len = strlen(webusb_https_url);
url->bLength = WEBUSB_DT_URL_DESCRIPTOR_SIZE + url_len;
url->bDescriptorType = WEBUSB_DT_URL;
url->bScheme = WEBUSB_URL_SCHEME_HTTPS;
memcpy(&url->URL, webusb_https_url, url_len);
*len = MIN(*len, url->bLength);
status = USBD_REQ_HANDLED;
} else {
// TODO: stall instead?
status = USBD_REQ_NOTSUPP;
}
break;
}
default: {
status = USBD_REQ_NOTSUPP;
break;
}
}
return status;
}
static void webusb_set_config(usbd_device* usbd_dev, uint16_t wValue) {
(void)wValue;
usbd_register_control_callback(
usbd_dev,
USB_REQ_TYPE_VENDOR | USB_REQ_TYPE_DEVICE,
USB_REQ_TYPE_TYPE | USB_REQ_TYPE_RECIPIENT,
webusb_control_vendor_request);
}
void webusb_setup(usbd_device* usbd_dev, const char* https_url) {
webusb_https_url = https_url;
usbd_register_set_config_callback(usbd_dev, webusb_set_config);
}

31
webusb.h Normal file
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@ -0,0 +1,31 @@
/*
* Copyright (c) 2016, Devan Lai
*
* Permission to use, copy, modify, and/or distribute this software
* for any purpose with or without fee is hereby granted, provided
* that the above copyright notice and this permission notice
* appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
* WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
* AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
* NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef WEBUSB_H_INCLUDED
#define WEBUSB_H_INCLUDED
#include <libopencm3/usb/usbd.h>
#include "webusb_defs.h"
// Arbitrary
#define WEBUSB_VENDOR_CODE 0x01
extern const struct webusb_platform_descriptor webusb_platform_capability_descriptor;
extern void webusb_setup(usbd_device* usbd_dev, const char* https_url);
#endif

61
webusb_defs.h Normal file
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@ -0,0 +1,61 @@
/*
* Copyright (c) 2016, Devan Lai
*
* Permission to use, copy, modify, and/or distribute this software
* for any purpose with or without fee is hereby granted, provided
* that the above copyright notice and this permission notice
* appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
* WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
* AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
* NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef WEBUSB_DEFS_H_INCLUDED
#define WEBUSB_DEFS_H_INCLUDED
#include <stdint.h>
#define WEBUSB_REQ_GET_URL 0x02
#define WEBUSB_DT_DESCRIPTOR_SET_HEADER 0
#define WEBUSB_DT_CONFIGURATION_SUBSET_HEADER 1
#define WEBUSB_DT_FUNCTION_SUBSET_HEADER 2
#define WEBUSB_DT_URL 3
#define WEBUSB_URL_SCHEME_HTTP 0
#define WEBUSB_URL_SCHEME_HTTPS 1
struct webusb_platform_descriptor {
uint8_t bLength;
uint8_t bDescriptorType;
uint8_t bDevCapabilityType;
uint8_t bReserved;
uint8_t platformCapabilityUUID[16];
uint16_t bcdVersion;
uint8_t bVendorCode;
uint8_t iLandingPage;
} __attribute__((packed));
#define WEBUSB_PLATFORM_DESCRIPTOR_SIZE sizeof(struct webusb_platform_descriptor)
// from https://wicg.github.io/webusb/#webusb-platform-capability-descriptor
// see also this (for endianness explanation)
// https://github.com/WICG/webusb/issues/115#issuecomment-352206549
#define WEBUSB_UUID {0x38, 0xB6, 0x08, 0x34, 0xA9, 0x09, 0xA0, 0x47,0x8B, 0xFD, 0xA0, 0x76, 0x88, 0x15, 0xB6, 0x65}
struct webusb_url_descriptor {
uint8_t bLength;
uint8_t bDescriptorType;
uint8_t bScheme;
char URL[];
} __attribute__((packed));
#define WEBUSB_DT_URL_DESCRIPTOR_SIZE 3
#endif

161
winusb.c Normal file
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@ -0,0 +1,161 @@
/*
* Copyright (c) 2016, Devan Lai
*
* Permission to use, copy, modify, and/or distribute this software
* for any purpose with or without fee is hereby granted, provided
* that the above copyright notice and this permission notice
* appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
* WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
* AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
* NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <libopencm3/usb/usbd.h>
#include "util.h"
#include "winusb.h"
static int usb_descriptor_type(uint16_t wValue) {
return wValue >> 8;
}
static int usb_descriptor_index(uint16_t wValue) {
return wValue & 0xFF;
}
static struct winusb_compatible_id_descriptor winusb_wcid = {
.header = {
.dwLength = sizeof(struct winusb_compatible_id_descriptor_header) +
1 * sizeof(struct winusb_compatible_id_function_section),
.bcdVersion = WINUSB_BCD_VERSION,
.wIndex = WINUSB_REQ_GET_COMPATIBLE_ID_FEATURE_DESCRIPTOR,
.bNumSections = 1,
.reserved = { 0, 0, 0, 0, 0, 0, 0 },
},
.functions = {
{
// note - bInterfaceNumber is rewritten in winusb_setup with the correct interface number
.bInterfaceNumber = 0,
.reserved0 = { 1 },
.compatibleId = "WINUSB",
.subCompatibleId = "",
.reserved1 = { 0, 0, 0, 0, 0, 0}
},
}
};
static const struct usb_string_descriptor winusb_string_descriptor = {
.bLength = 0x12,
.bDescriptorType = USB_DT_STRING,
.wData = WINUSB_EXTRA_STRING
};
static const struct winusb_extended_properties_descriptor guid = {
.header = {
.dwLength = sizeof(struct winusb_extended_properties_descriptor_header)
+ 1 * sizeof (struct winusb_extended_properties_feature_descriptor),
.bcdVersion = WINUSB_BCD_VERSION,
.wIndex = WINUSB_REQ_GET_EXTENDED_PROPERTIES_OS_FEATURE_DESCRIPTOR,
.wNumFeatures = 1,
},
.features = {
{
.dwLength = sizeof(struct winusb_extended_properties_feature_descriptor),
.dwPropertyDataType = WINUSB_EXTENDED_PROPERTIES_MULTISZ_DATA_TYPE,
.wNameLength = WINUSB_EXTENDED_PROPERTIES_GUID_NAME_SIZE_C,
.name = WINUSB_EXTENDED_PROPERTIES_GUID_NAME,
.dwPropertyDataLength = WINUSB_EXTENDED_PROPERTIES_GUID_DATA_SIZE_C,
.propertyData = WINUSB_EXTENDED_PROPERTIES_GUID_DATA,
},
}
};
static int winusb_descriptor_request(usbd_device *usbd_dev,
struct usb_setup_data *req,
uint8_t **buf, uint16_t *len,
usbd_control_complete_callback* complete) {
(void)complete;
(void)usbd_dev;
if ((req->bmRequestType & USB_REQ_TYPE_TYPE) != USB_REQ_TYPE_STANDARD) {
return USBD_REQ_NEXT_CALLBACK;
}
if (req->bRequest == USB_REQ_GET_DESCRIPTOR && usb_descriptor_type(req->wValue) == USB_DT_STRING) {
if (usb_descriptor_index(req->wValue) == WINUSB_EXTRA_STRING_INDEX) {
*buf = (uint8_t*)(&winusb_string_descriptor);
*len = MIN(*len, winusb_string_descriptor.bLength);
return USBD_REQ_HANDLED;
}
}
return USBD_REQ_NEXT_CALLBACK;
}
static int winusb_control_vendor_request(usbd_device *usbd_dev,
struct usb_setup_data *req,
uint8_t **buf, uint16_t *len,
usbd_control_complete_callback* complete) {
(void)complete;
(void)usbd_dev;
if (req->bRequest != WINUSB_MS_VENDOR_CODE) {
return USBD_REQ_NEXT_CALLBACK;
}
int status = USBD_REQ_NOTSUPP;
if (((req->bmRequestType & USB_REQ_TYPE_RECIPIENT) == USB_REQ_TYPE_DEVICE) &&
(req->wIndex == WINUSB_REQ_GET_COMPATIBLE_ID_FEATURE_DESCRIPTOR)) {
*buf = (uint8_t*)(&winusb_wcid);
*len = MIN(*len, winusb_wcid.header.dwLength);
status = USBD_REQ_HANDLED;
} else if (((req->bmRequestType & USB_REQ_TYPE_RECIPIENT) == USB_REQ_TYPE_INTERFACE) &&
(req->wIndex == WINUSB_REQ_GET_EXTENDED_PROPERTIES_OS_FEATURE_DESCRIPTOR) &&
(usb_descriptor_index(req->wValue) == winusb_wcid.functions[0].bInterfaceNumber)) {
*buf = (uint8_t*)(&guid);
*len = MIN(*len, guid.header.dwLength);
status = USBD_REQ_HANDLED;
} else {
status = USBD_REQ_NOTSUPP;
}
return status;
}
static void winusb_set_config(usbd_device* usbd_dev, uint16_t wValue) {
(void)wValue;
usbd_register_control_callback(
usbd_dev,
USB_REQ_TYPE_VENDOR,
USB_REQ_TYPE_TYPE,
winusb_control_vendor_request);
}
void winusb_setup(usbd_device* usbd_dev, uint8_t interface) {
winusb_wcid.functions[0].bInterfaceNumber = interface;
usbd_register_set_config_callback(usbd_dev, winusb_set_config);
/* Windows probes the compatible ID before setting the configuration,
so also register the callback now */
usbd_register_control_callback(
usbd_dev,
USB_REQ_TYPE_VENDOR,
USB_REQ_TYPE_TYPE,
winusb_control_vendor_request);
usbd_register_control_callback(
usbd_dev,
USB_REQ_TYPE_DEVICE,
USB_REQ_TYPE_RECIPIENT,
winusb_descriptor_request);
}

30
winusb.h Normal file
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@ -0,0 +1,30 @@
/*
* Copyright (c) 2016, Devan Lai
*
* Permission to use, copy, modify, and/or distribute this software
* for any purpose with or without fee is hereby granted, provided
* that the above copyright notice and this permission notice
* appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
* WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
* AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
* NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef WINUSB_H_INCLUDED
#define WINUSB_H_INCLUDED
#include "winusb_defs.h"
// Arbitrary, but must be equivalent to the last character in extra string
#define WINUSB_MS_VENDOR_CODE '!'
#define WINUSB_EXTRA_STRING {'M', 'S', 'F', 'T', '1', '0', '0', WINUSB_MS_VENDOR_CODE}
extern void winusb_setup(usbd_device* usbd_dev, uint8_t interface);
#endif

89
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/*
* Copyright (c) 2016, Devan Lai
*
* Permission to use, copy, modify, and/or distribute this software
* for any purpose with or without fee is hereby granted, provided
* that the above copyright notice and this permission notice
* appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
* WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
* AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
* NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef WINUSB_DEFS_H_INCLUDED
#define WINUSB_DEFS_H_INCLUDED
#include <stdint.h>
/* Microsoft OS 1.0 descriptors */
/* Extended Compat ID OS Feature Descriptor Specification */
#define WINUSB_REQ_GET_COMPATIBLE_ID_FEATURE_DESCRIPTOR 0x04
#define WINUSB_REQ_GET_EXTENDED_PROPERTIES_OS_FEATURE_DESCRIPTOR 0x05
#define WINUSB_BCD_VERSION 0x0100
// Apparently using DeviceInterfaceGUID does not always work on Windows 7.
// DeviceInterfaceGUIDs does seem to work.
#define WINUSB_EXTENDED_PROPERTIES_GUID_NAME u"DeviceInterfaceGUIDs"
#define WINUSB_EXTENDED_PROPERTIES_GUID_NAME_SIZE_C sizeof(WINUSB_EXTENDED_PROPERTIES_GUID_NAME)
#define WINUSB_EXTENDED_PROPERTIES_GUID_NAME_SIZE_U (sizeof(WINUSB_EXTENDED_PROPERTIES_GUID_NAME) / 2)
// extra null is intentional - it's an array of GUIDs with 1 item
#define WINUSB_EXTENDED_PROPERTIES_GUID_DATA u"{0263b512-88cb-4136-9613-5c8e109d8ef5}\x00"
#define WINUSB_EXTENDED_PROPERTIES_GUID_DATA_SIZE_C sizeof(WINUSB_EXTENDED_PROPERTIES_GUID_DATA)
#define WINUSB_EXTENDED_PROPERTIES_GUID_DATA_SIZE_U (sizeof(WINUSB_EXTENDED_PROPERTIES_GUID_DATA) / 2)
#define WINUSB_EXTENDED_PROPERTIES_MULTISZ_DATA_TYPE 7
#define WINUSB_EXTRA_STRING_INDEX 0xee
/* Table 2. Function Section */
struct winusb_compatible_id_function_section {
uint8_t bInterfaceNumber;
uint8_t reserved0[1];
char compatibleId[8];
char subCompatibleId[8];
uint8_t reserved1[6];
} __attribute__((packed));
/* Table 1. Header Section */
struct winusb_compatible_id_descriptor_header {
uint32_t dwLength;
uint16_t bcdVersion;
uint16_t wIndex;
uint8_t bNumSections;
uint8_t reserved[7];
} __attribute__((packed));
struct winusb_compatible_id_descriptor {
struct winusb_compatible_id_descriptor_header header;
struct winusb_compatible_id_function_section functions[];
} __attribute__((packed));
struct winusb_extended_properties_feature_descriptor {
uint32_t dwLength;
uint32_t dwPropertyDataType;
uint16_t wNameLength;
uint16_t name[WINUSB_EXTENDED_PROPERTIES_GUID_NAME_SIZE_U];
uint32_t dwPropertyDataLength;
uint16_t propertyData[WINUSB_EXTENDED_PROPERTIES_GUID_DATA_SIZE_U];
} __attribute__((packed));
struct winusb_extended_properties_descriptor_header {
uint32_t dwLength;
uint16_t bcdVersion;
uint16_t wIndex;
uint16_t wNumFeatures;
} __attribute__((packed));
struct winusb_extended_properties_descriptor {
struct winusb_extended_properties_descriptor_header header;
struct winusb_extended_properties_feature_descriptor features[];
} __attribute__((packed));
#endif