mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-11-27 01:48:17 +00:00
480 lines
14 KiB
C
480 lines
14 KiB
C
/*
|
|
* This file is part of the Trezor project, https://trezor.io/
|
|
*
|
|
* Copyright (C) 2014 Pavol Rusnak <stick@satoshilabs.com>
|
|
*
|
|
* This library is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU Lesser General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This library 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 Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public License
|
|
* along with this library. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <libopencm3/usb/hid.h>
|
|
#include <libopencm3/usb/usbd.h>
|
|
|
|
#include "common.h"
|
|
#include "config.h"
|
|
#include "debug.h"
|
|
#include "messages.h"
|
|
#include "random_delays.h"
|
|
#include "timer.h"
|
|
#include "trezor.h"
|
|
#if U2F_ENABLED
|
|
#include "u2f.h"
|
|
#endif
|
|
#include "usb.h"
|
|
#include "util.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
|
|
#if U2F_ENABLED
|
|
#define USB_INTERFACE_INDEX_U2F 2
|
|
#define USB_INTERFACE_COUNT 3
|
|
#else
|
|
#define USB_INTERFACE_COUNT 2
|
|
#endif
|
|
#else
|
|
#if U2F_ENABLED
|
|
#define USB_INTERFACE_INDEX_U2F 1
|
|
#define USB_INTERFACE_COUNT 2
|
|
#else
|
|
#define USB_INTERFACE_COUNT 1
|
|
#endif
|
|
#endif
|
|
|
|
#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
|
|
#if U2F_ENABLED
|
|
#define ENDPOINT_ADDRESS_U2F_IN (0x83)
|
|
#define ENDPOINT_ADDRESS_U2F_OUT (0x03)
|
|
#endif
|
|
|
|
#define USB_STRINGS \
|
|
X(MANUFACTURER, "SatoshiLabs") \
|
|
X(PRODUCT, "TREZOR") \
|
|
X(SERIAL_NUMBER, config_uuid_str) \
|
|
X(INTERFACE_MAIN, "TREZOR Interface") \
|
|
X(INTERFACE_DEBUG, "TREZOR Debug Link Interface") \
|
|
X(INTERFACE_U2F, "TREZOR U2F Interface")
|
|
|
|
#define X(name, value) USB_STRING_##name,
|
|
enum {
|
|
USB_STRING_LANGID_CODES, // LANGID code array
|
|
USB_STRINGS
|
|
};
|
|
#undef X
|
|
|
|
#define X(name, value) value,
|
|
static const char *usb_strings[] = {USB_STRINGS};
|
|
#undef X
|
|
|
|
static const struct usb_device_descriptor dev_descr = {
|
|
.bLength = USB_DT_DEVICE_SIZE,
|
|
.bDescriptorType = USB_DT_DEVICE,
|
|
.bcdUSB = 0x0210,
|
|
.bDeviceClass = 0,
|
|
.bDeviceSubClass = 0,
|
|
.bDeviceProtocol = 0,
|
|
.bMaxPacketSize0 = USB_PACKET_SIZE,
|
|
.idVendor = 0x1209,
|
|
.idProduct = 0x53c1,
|
|
.bcdDevice = 0x0100,
|
|
.iManufacturer = USB_STRING_MANUFACTURER,
|
|
.iProduct = USB_STRING_PRODUCT,
|
|
.iSerialNumber = USB_STRING_SERIAL_NUMBER,
|
|
.bNumConfigurations = 1,
|
|
};
|
|
|
|
#if U2F_ENABLED
|
|
|
|
static const uint8_t hid_report_descriptor_u2f[] = {
|
|
0x06, 0xd0, 0xf1, // USAGE_PAGE (FIDO Alliance)
|
|
0x09, 0x01, // USAGE (U2F HID Authenticator Device)
|
|
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_u2f;
|
|
struct {
|
|
uint8_t bReportDescriptorType;
|
|
uint16_t wDescriptorLength;
|
|
} __attribute__((packed)) hid_report_u2f;
|
|
} __attribute__((packed))
|
|
hid_function_u2f = {.hid_descriptor_u2f =
|
|
{
|
|
.bLength = sizeof(hid_function_u2f),
|
|
.bDescriptorType = USB_DT_HID,
|
|
.bcdHID = 0x0111,
|
|
.bCountryCode = 0,
|
|
.bNumDescriptors = 1,
|
|
},
|
|
.hid_report_u2f = {
|
|
.bReportDescriptorType = USB_DT_REPORT,
|
|
.wDescriptorLength = sizeof(hid_report_descriptor_u2f),
|
|
}};
|
|
|
|
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 = USB_PACKET_SIZE,
|
|
.bInterval = 1,
|
|
},
|
|
{
|
|
.bLength = USB_DT_ENDPOINT_SIZE,
|
|
.bDescriptorType = USB_DT_ENDPOINT,
|
|
.bEndpointAddress = ENDPOINT_ADDRESS_U2F_OUT,
|
|
.bmAttributes = USB_ENDPOINT_ATTR_INTERRUPT,
|
|
.wMaxPacketSize = USB_PACKET_SIZE,
|
|
.bInterval = 1,
|
|
}};
|
|
|
|
static const struct usb_interface_descriptor hid_iface_u2f[] = {{
|
|
.bLength = USB_DT_INTERFACE_SIZE,
|
|
.bDescriptorType = USB_DT_INTERFACE,
|
|
.bInterfaceNumber = USB_INTERFACE_INDEX_U2F,
|
|
.bAlternateSetting = 0,
|
|
.bNumEndpoints = 2,
|
|
.bInterfaceClass = USB_CLASS_HID,
|
|
.bInterfaceSubClass = 0,
|
|
.bInterfaceProtocol = 0,
|
|
.iInterface = USB_STRING_INTERFACE_U2F,
|
|
.endpoint = hid_endpoints_u2f,
|
|
.extra = &hid_function_u2f,
|
|
.extralen = sizeof(hid_function_u2f),
|
|
}};
|
|
|
|
#endif
|
|
|
|
#if DEBUG_LINK
|
|
|
|
static const struct usb_endpoint_descriptor webusb_endpoints_debug[2] = {
|
|
{
|
|
.bLength = USB_DT_ENDPOINT_SIZE,
|
|
.bDescriptorType = USB_DT_ENDPOINT,
|
|
.bEndpointAddress = ENDPOINT_ADDRESS_DEBUG_IN,
|
|
.bmAttributes = USB_ENDPOINT_ATTR_INTERRUPT,
|
|
.wMaxPacketSize = USB_PACKET_SIZE,
|
|
.bInterval = 1,
|
|
},
|
|
{
|
|
.bLength = USB_DT_ENDPOINT_SIZE,
|
|
.bDescriptorType = USB_DT_ENDPOINT,
|
|
.bEndpointAddress = ENDPOINT_ADDRESS_DEBUG_OUT,
|
|
.bmAttributes = USB_ENDPOINT_ATTR_INTERRUPT,
|
|
.wMaxPacketSize = USB_PACKET_SIZE,
|
|
.bInterval = 1,
|
|
}};
|
|
|
|
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_VENDOR,
|
|
.bInterfaceSubClass = 0,
|
|
.bInterfaceProtocol = 0,
|
|
.iInterface = USB_STRING_INTERFACE_DEBUG,
|
|
.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 = USB_PACKET_SIZE,
|
|
.bInterval = 1,
|
|
},
|
|
{
|
|
.bLength = USB_DT_ENDPOINT_SIZE,
|
|
.bDescriptorType = USB_DT_ENDPOINT,
|
|
.bEndpointAddress = ENDPOINT_ADDRESS_MAIN_OUT,
|
|
.bmAttributes = USB_ENDPOINT_ATTR_INTERRUPT,
|
|
.wMaxPacketSize = USB_PACKET_SIZE,
|
|
.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 = webusb_iface_main,
|
|
#if DEBUG_LINK
|
|
},
|
|
{
|
|
.num_altsetting = 1,
|
|
.altsetting = webusb_iface_debug,
|
|
#endif
|
|
#if U2F_ENABLED
|
|
},
|
|
{
|
|
.num_altsetting = 1,
|
|
.altsetting = hid_iface_u2f,
|
|
#endif
|
|
}};
|
|
|
|
static const struct usb_config_descriptor config = {
|
|
.bLength = USB_DT_CONFIGURATION_SIZE,
|
|
.bDescriptorType = USB_DT_CONFIGURATION,
|
|
.wTotalLength = 0,
|
|
.bNumInterfaces = USB_INTERFACE_COUNT,
|
|
.bConfigurationValue = 1,
|
|
.iConfiguration = 0,
|
|
.bmAttributes = 0x80,
|
|
.bMaxPower = 0x32,
|
|
.interface = ifaces,
|
|
};
|
|
|
|
static volatile char tiny = 0;
|
|
|
|
#if U2F_ENABLED
|
|
|
|
static enum usbd_request_return_codes 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;
|
|
|
|
wait_random();
|
|
|
|
if ((req->bmRequestType != 0x81) ||
|
|
(req->bRequest != USB_REQ_GET_DESCRIPTOR) || (req->wValue != 0x2200))
|
|
return 0;
|
|
|
|
debugLog(0, "", "hid_control_request u2f");
|
|
*buf = (uint8_t *)hid_report_descriptor_u2f;
|
|
*len = MIN_8bits(*len, sizeof(hid_report_descriptor_u2f));
|
|
return 1;
|
|
}
|
|
|
|
static void u2f_rx_callback(usbd_device *dev, uint8_t ep) {
|
|
(void)ep;
|
|
static CONFIDENTIAL uint8_t buf[USB_PACKET_SIZE] __attribute__((aligned(4)));
|
|
|
|
debugLog(0, "", "u2f_rx_callback");
|
|
if (usbd_ep_read_packet(dev, ENDPOINT_ADDRESS_U2F_OUT, buf, sizeof(buf)) !=
|
|
USB_PACKET_SIZE)
|
|
return;
|
|
u2fhid_read(tiny, (const U2FHID_FRAME *)(void *)buf);
|
|
}
|
|
|
|
#endif
|
|
|
|
static void main_rx_callback(usbd_device *dev, uint8_t ep) {
|
|
(void)ep;
|
|
static CONFIDENTIAL uint8_t buf[USB_PACKET_SIZE] __attribute__((aligned(4)));
|
|
if (usbd_ep_read_packet(dev, ENDPOINT_ADDRESS_MAIN_OUT, buf, sizeof(buf)) !=
|
|
USB_PACKET_SIZE)
|
|
return;
|
|
debugLog(0, "", "main_rx_callback");
|
|
if (!tiny) {
|
|
msg_read(buf, sizeof(buf));
|
|
} else {
|
|
msg_read_tiny(buf, sizeof(buf));
|
|
}
|
|
}
|
|
|
|
#if DEBUG_LINK
|
|
|
|
static void debug_rx_callback(usbd_device *dev, uint8_t ep) {
|
|
(void)ep;
|
|
static uint8_t buf[USB_PACKET_SIZE] __attribute__((aligned(4)));
|
|
if (usbd_ep_read_packet(dev, ENDPOINT_ADDRESS_DEBUG_OUT, buf, sizeof(buf)) !=
|
|
USB_PACKET_SIZE)
|
|
return;
|
|
debugLog(0, "", "debug_rx_callback");
|
|
if (!tiny) {
|
|
msg_debug_read(buf, sizeof(buf));
|
|
} else {
|
|
msg_read_tiny(buf, sizeof(buf));
|
|
}
|
|
}
|
|
|
|
#endif
|
|
|
|
static void set_config(usbd_device *dev, uint16_t wValue) {
|
|
(void)wValue;
|
|
|
|
usbd_ep_setup(dev, ENDPOINT_ADDRESS_MAIN_IN, USB_ENDPOINT_ATTR_INTERRUPT,
|
|
USB_PACKET_SIZE, 0);
|
|
usbd_ep_setup(dev, ENDPOINT_ADDRESS_MAIN_OUT, USB_ENDPOINT_ATTR_INTERRUPT,
|
|
USB_PACKET_SIZE, main_rx_callback);
|
|
#if U2F_ENABLED
|
|
usbd_ep_setup(dev, ENDPOINT_ADDRESS_U2F_IN, USB_ENDPOINT_ATTR_INTERRUPT,
|
|
USB_PACKET_SIZE, 0);
|
|
usbd_ep_setup(dev, ENDPOINT_ADDRESS_U2F_OUT, USB_ENDPOINT_ATTR_INTERRUPT,
|
|
USB_PACKET_SIZE, u2f_rx_callback);
|
|
#endif
|
|
#if DEBUG_LINK
|
|
usbd_ep_setup(dev, ENDPOINT_ADDRESS_DEBUG_IN, USB_ENDPOINT_ATTR_INTERRUPT,
|
|
USB_PACKET_SIZE, 0);
|
|
usbd_ep_setup(dev, ENDPOINT_ADDRESS_DEBUG_OUT, USB_ENDPOINT_ATTR_INTERRUPT,
|
|
USB_PACKET_SIZE, debug_rx_callback);
|
|
#endif
|
|
#if U2F_ENABLED
|
|
usbd_register_control_callback(
|
|
dev, USB_REQ_TYPE_STANDARD | USB_REQ_TYPE_INTERFACE,
|
|
USB_REQ_TYPE_TYPE | USB_REQ_TYPE_RECIPIENT, hid_control_request);
|
|
#endif
|
|
}
|
|
|
|
static usbd_device *usbd_dev = NULL;
|
|
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_no_landing,
|
|
};
|
|
|
|
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, 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) {
|
|
if (usbd_dev == NULL) {
|
|
return;
|
|
}
|
|
|
|
static const uint8_t *data;
|
|
// poll read buffer
|
|
usbd_poll(usbd_dev);
|
|
// write pending data
|
|
data = msg_out_data();
|
|
if (data) {
|
|
while (usbd_ep_write_packet(usbd_dev, ENDPOINT_ADDRESS_MAIN_IN, data,
|
|
USB_PACKET_SIZE) != USB_PACKET_SIZE) {
|
|
}
|
|
}
|
|
#if U2F_ENABLED
|
|
data = u2f_out_data();
|
|
if (data) {
|
|
while (usbd_ep_write_packet(usbd_dev, ENDPOINT_ADDRESS_U2F_IN, data,
|
|
USB_PACKET_SIZE) != USB_PACKET_SIZE) {
|
|
}
|
|
}
|
|
#endif
|
|
#if DEBUG_LINK
|
|
// write pending debug data
|
|
data = msg_debug_out_data();
|
|
if (data) {
|
|
while (usbd_ep_write_packet(usbd_dev, ENDPOINT_ADDRESS_DEBUG_IN, data,
|
|
USB_PACKET_SIZE) != USB_PACKET_SIZE) {
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
|
|
void usbReconnect(void) {
|
|
if (usbd_dev != NULL) {
|
|
usbd_disconnect(usbd_dev, 1);
|
|
delay(120000);
|
|
usbd_disconnect(usbd_dev, 0);
|
|
}
|
|
}
|
|
|
|
char usbTiny(char set) {
|
|
char old = tiny;
|
|
tiny = set;
|
|
return old;
|
|
}
|
|
|
|
void waitAndProcessUSBRequests(uint32_t millis) {
|
|
uint32_t start = timer_ms();
|
|
|
|
while ((timer_ms() - start) < millis) {
|
|
if (usbd_dev != NULL) {
|
|
usbd_poll(usbd_dev);
|
|
}
|
|
}
|
|
}
|
|
|
|
void usbFlush(uint32_t millis) {
|
|
if (usbd_dev == NULL) {
|
|
return;
|
|
}
|
|
|
|
static const uint8_t *data;
|
|
data = msg_out_data();
|
|
if (data) {
|
|
while (usbd_ep_write_packet(usbd_dev, ENDPOINT_ADDRESS_MAIN_IN, data,
|
|
USB_PACKET_SIZE) != USB_PACKET_SIZE) {
|
|
}
|
|
}
|
|
|
|
uint32_t start = timer_ms();
|
|
|
|
while ((timer_ms() - start) < millis) {
|
|
asm("nop");
|
|
}
|
|
}
|