/*
 * Copyright 2010 Richard Hughes <richard@hughsie.com>
 * Copyright 2011 Hans de Goede <hdegoede@redhat.com>
 * Copyright 2011 Debarshi Ray <debarshir@src.gnome.org>
 *
 * SPDX-License-Identifier: LGPL-2.1-or-later
 */

#define G_LOG_DOMAIN "FuUsbDevice"

#include "config.h"

#include "fu-bytes.h"
#include "fu-context-private.h"
#include "fu-device-event-private.h"
#include "fu-device-locker.h"
#include "fu-device-private.h"
#include "fu-dump.h"
#include "fu-fuzzer.h"
#include "fu-input-stream.h"
#include "fu-linear-firmware.h"
#include "fu-mem.h"
#include "fu-string.h"
#include "fu-usb-bos-descriptor-private.h"
#include "fu-usb-config-descriptor-private.h"
#include "fu-usb-device-fw-ds20.h"
#include "fu-usb-device-ms-ds20.h"
#include "fu-usb-device-private.h"
#include "fu-usb-hid-descriptor-private.h"
#include "fu-usb-interface-private.h"

/**
 * FuUsbDevice:
 *
 * A USB device.
 *
 * See also: [class@FuDevice], [class@FuHidDevice]
 */

typedef struct {
	libusb_device *usb_device;    /* (nullable): only set from FuUsbBackend */
	libusb_device_handle *handle; /* (nullable) */
	struct libusb_device_descriptor desc;
	guint8 busnum;
	guint8 devnum;
	gboolean interfaces_valid;
	gboolean bos_descriptors_valid;
	GPtrArray *interfaces;	    /* (element-type FuUsbInterface) */
	GPtrArray *bos_descriptors; /* (element-type FuUsbBosDescriptor) */
	GPtrArray *cfg_descriptors; /* (element-type FuUsbConfigDescriptor) */
	GPtrArray *hid_descriptors; /* (element-type FuUsbHidDescriptor) */
	gint configuration;
	GPtrArray *device_interfaces; /* (nullable) (element-type FuUsbDeviceInterface) */
	guint claim_retry_count;
} FuUsbDevicePrivate;

typedef struct {
	guint8 number;
	gboolean claimed;
} FuUsbDeviceInterface;

static gboolean
fu_usb_device_ensure_interfaces(FuUsbDevice *self, GError **error);

static void
fu_usb_device_fuzzer_iface_init(FuFuzzerInterface *iface);

G_DEFINE_TYPE_EXTENDED(FuUsbDevice,
		       fu_usb_device,
		       FU_TYPE_UDEV_DEVICE,
		       0,
		       G_ADD_PRIVATE(FuUsbDevice)
			   G_IMPLEMENT_INTERFACE(FU_TYPE_FUZZER, fu_usb_device_fuzzer_iface_init));

enum { PROP_0, PROP_LIBUSB_DEVICE, PROP_LAST };

enum {
	QUARK_ADD_INSTANCE_ID_REV,
	QUARK_LAST,
};

static guint quarks[QUARK_LAST] = {0};

#define GET_PRIVATE(o) (fu_usb_device_get_instance_private(o))

#define FU_DEVICE_CLAIM_INTERFACE_DELAY 500 /* ms */
#define FU_USB_DEVICE_OPEN_DELAY	50  /* ms */

static gboolean
fu_usb_device_libusb_error_to_gerror(gint rc, GError **error)
{
	gint error_code = FWUPD_ERROR_INTERNAL;
	/* put the rc in libusb's error enum so that gcc warns us if we're
	   missing an error code */
	enum libusb_error result = rc;

	switch (result) {
	case LIBUSB_SUCCESS:
		return TRUE;
	case LIBUSB_ERROR_INVALID_PARAM:
	case LIBUSB_ERROR_NOT_FOUND:
	case LIBUSB_ERROR_NO_MEM:
	case LIBUSB_ERROR_OTHER:
	case LIBUSB_ERROR_INTERRUPTED:
		error_code = FWUPD_ERROR_INTERNAL;
		break;
	case LIBUSB_ERROR_IO:
	case LIBUSB_ERROR_OVERFLOW:
	case LIBUSB_ERROR_PIPE:
		error_code = FWUPD_ERROR_READ;
		break;
	case LIBUSB_ERROR_TIMEOUT:
		error_code = FWUPD_ERROR_TIMED_OUT;
		break;
	case LIBUSB_ERROR_NOT_SUPPORTED:
		error_code = FWUPD_ERROR_NOT_SUPPORTED;
		break;
	case LIBUSB_ERROR_ACCESS:
		error_code = FWUPD_ERROR_PERMISSION_DENIED;
		break;
	case LIBUSB_ERROR_NO_DEVICE:
		error_code = FWUPD_ERROR_NOT_FOUND;
		break;
	case LIBUSB_ERROR_BUSY:
		error_code = FWUPD_ERROR_BUSY;
		break;
	default:
		break;
	}

	g_set_error(error, FWUPD_ERROR, error_code, "USB error: %s [%i]", libusb_strerror(rc), rc);

	return FALSE;
}

static gboolean
fu_usb_device_libusb_status_to_gerror(gint status, GError **error)
{
	const FuErrorMapEntry entries[] = {
	    {LIBUSB_TRANSFER_COMPLETED, FWUPD_ERROR_LAST, NULL},
	    {LIBUSB_TRANSFER_ERROR, FWUPD_ERROR_INTERNAL, "failed"},
	    {LIBUSB_TRANSFER_TIMED_OUT, FWUPD_ERROR_TIMED_OUT, NULL},
	    {LIBUSB_TRANSFER_CANCELLED, FWUPD_ERROR_NOTHING_TO_DO, "cancelled"},
	    {LIBUSB_TRANSFER_STALL, FWUPD_ERROR_NOT_SUPPORTED, "stalled or not supported"},
	    {LIBUSB_TRANSFER_NO_DEVICE, FWUPD_ERROR_NOT_FOUND, "device was disconnected"},
	    {LIBUSB_TRANSFER_OVERFLOW, FWUPD_ERROR_INTERNAL, "sent more data than requested"},
	};
	return fu_error_map_entry_to_gerror(status, entries, G_N_ELEMENTS(entries), error);
}

/**
 * fu_usb_device_get_dev: (skip):
 **/
libusb_device *
fu_usb_device_get_dev(FuUsbDevice *self)
{
	FuUsbDevicePrivate *priv = GET_PRIVATE(self);
	g_return_val_if_fail(FU_IS_USB_DEVICE(self), NULL);
	return priv->usb_device;
}

static gboolean
fu_usb_device_not_open_error(FuUsbDevice *self, GError **error)
{
	g_set_error(error,
		    FWUPD_ERROR,
		    FWUPD_ERROR_INTERNAL,
		    "device %04x:%04x has not been opened",
		    fu_device_get_vid(FU_DEVICE(self)),
		    fu_device_get_pid(FU_DEVICE(self)));
	return FALSE;
}

static void
fu_usb_device_invalidate(FuDevice *device)
{
	FuUsbDevice *self = FU_USB_DEVICE(device);
	FuUsbDevicePrivate *priv = GET_PRIVATE(self);

	/* FuUdevDevice->invalidate */
	FU_DEVICE_CLASS(fu_usb_device_parent_class)->invalidate(device);

	priv->interfaces_valid = FALSE;
	priv->bos_descriptors_valid = FALSE;
	g_ptr_array_set_size(priv->interfaces, 0);
	g_ptr_array_set_size(priv->bos_descriptors, 0);
	g_ptr_array_set_size(priv->hid_descriptors, 0);
}

static void
fu_usb_device_set_dev(FuUsbDevice *self, struct libusb_device *usb_device)
{
	FuUsbDevicePrivate *priv = GET_PRIVATE(self);

	/* allow replacement */
	g_clear_pointer(&priv->usb_device, libusb_unref_device);
	if (usb_device != NULL)
		priv->usb_device = libusb_ref_device(usb_device);
}

static void
fu_usb_device_vid_notify_cb(FuDevice *device, GParamSpec *pspec, gpointer user_data)
{
	fu_device_add_instance_u16(device, "VID", fu_device_get_vid(device));
}

static void
fu_usb_device_pid_notify_cb(FuDevice *device, GParamSpec *pspec, gpointer user_data)
{
	fu_device_add_instance_u16(device, "PID", fu_device_get_pid(device));
}

static void
fu_usb_device_get_property(GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
{
	FuUsbDevice *device = FU_USB_DEVICE(object);
	FuUsbDevicePrivate *priv = GET_PRIVATE(device);
	switch (prop_id) {
	case PROP_LIBUSB_DEVICE:
		g_value_set_pointer(value, priv->usb_device);
		break;
	default:
		G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
		break;
	}
}

static void
fu_usb_device_set_property(GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
{
	FuUsbDevice *self = FU_USB_DEVICE(object);
	switch (prop_id) {
	case PROP_LIBUSB_DEVICE:
		fu_usb_device_set_dev(self, g_value_get_pointer(value));
		break;
	default:
		G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
		break;
	}
}

static void
fu_usb_device_finalize(GObject *object)
{
	FuUsbDevice *self = FU_USB_DEVICE(object);
	FuUsbDevicePrivate *priv = GET_PRIVATE(self);

	if (priv->handle != NULL)
		libusb_close(priv->handle);
	if (priv->usb_device != NULL)
		libusb_unref_device(priv->usb_device);
	if (priv->device_interfaces != NULL)
		g_ptr_array_unref(priv->device_interfaces);
	g_ptr_array_unref(priv->interfaces);
	g_ptr_array_unref(priv->bos_descriptors);
	g_ptr_array_unref(priv->hid_descriptors);
	g_ptr_array_unref(priv->cfg_descriptors);

	G_OBJECT_CLASS(fu_usb_device_parent_class)->finalize(object);
}

static void
fu_usb_device_init(FuUsbDevice *self)
{
	FuUsbDevicePrivate *priv = GET_PRIVATE(self);
	priv->configuration = -1;
	priv->interfaces = g_ptr_array_new_with_free_func((GDestroyNotify)g_object_unref);
	priv->bos_descriptors = g_ptr_array_new_with_free_func((GDestroyNotify)g_object_unref);
	priv->cfg_descriptors = g_ptr_array_new_with_free_func((GDestroyNotify)g_object_unref);
	priv->hid_descriptors = g_ptr_array_new_with_free_func((GDestroyNotify)g_object_unref);
	fu_device_set_acquiesce_delay(FU_DEVICE(self), 2500);
	fu_device_retry_add_recovery(FU_DEVICE(self),
				     FWUPD_ERROR,
				     FWUPD_ERROR_PERMISSION_DENIED,
				     NULL);
	g_signal_connect(FU_DEVICE(self),
			 "notify::vid",
			 G_CALLBACK(fu_usb_device_vid_notify_cb),
			 NULL);
	g_signal_connect(FU_DEVICE(self),
			 "notify::pid",
			 G_CALLBACK(fu_usb_device_pid_notify_cb),
			 NULL);
}

/**
 * fu_usb_device_set_claim_retry_count:
 * @self: a #FuUsbDevice
 * @claim_retry_count: integer
 *
 * Sets the number of tries we should attempt when claiming the device.
 * Applies to all interfaces associated with this device.
 *
 * Since: 1.9.10
 **/
void
fu_usb_device_set_claim_retry_count(FuUsbDevice *self, guint claim_retry_count)
{
	FuUsbDevicePrivate *priv = GET_PRIVATE(self);
	g_return_if_fail(FU_IS_USB_DEVICE(self));
	priv->claim_retry_count = claim_retry_count;
}

/**
 * fu_usb_device_get_claim_retry_count:
 * @self: a #FuUsbDevice
 *
 * Gets the number of tries we should attempt when claiming the device.
 *
 * Returns: integer, or `0` if no attempt should be made.
 *
 * Since: 1.9.10
 **/
guint
fu_usb_device_get_claim_retry_count(FuUsbDevice *self)
{
	FuUsbDevicePrivate *priv = GET_PRIVATE(self);
	g_return_val_if_fail(FU_IS_USB_DEVICE(self), G_MAXUINT);
	return priv->claim_retry_count;
}

/**
 * fu_usb_device_set_configuration:
 * @device: a #FuUsbDevice
 * @configuration: the configuration value to set
 *
 * Set the active bConfigurationValue for the device.
 *
 * Since: 1.7.4
 **/
void
fu_usb_device_set_configuration(FuUsbDevice *device, gint configuration)
{
	FuUsbDevicePrivate *priv = GET_PRIVATE(device);
	g_return_if_fail(FU_IS_USB_DEVICE(device));
	priv->configuration = configuration;
}

/**
 * fu_usb_device_add_interface:
 * @device: a #FuUsbDevice
 * @number: bInterfaceNumber of the interface
 *
 * Adds an interface that will be claimed on `->open()` and released on `->close()`.
 *
 * Since: 1.7.4
 **/
void
fu_usb_device_add_interface(FuUsbDevice *device, guint8 number)
{
	FuUsbDevicePrivate *priv = GET_PRIVATE(device);
	FuUsbDeviceInterface *iface;

	g_return_if_fail(FU_IS_USB_DEVICE(device));

	if (priv->device_interfaces == NULL)
		priv->device_interfaces = g_ptr_array_new_with_free_func(g_free);

	/* check for existing */
	for (guint i = 0; i < priv->device_interfaces->len; i++) {
		iface = g_ptr_array_index(priv->device_interfaces, i);
		if (iface->number == number)
			return;
	}

	/* add new */
	iface = g_new0(FuUsbDeviceInterface, 1);
	iface->number = number;
	g_ptr_array_add(priv->device_interfaces, iface);
}

static gboolean
fu_usb_device_query_hub(FuUsbDevice *self, GError **error)
{
	gsize sz = 0;
	guint16 value = 0x29;
	guint8 data[0x0c] = {0x0};
	g_autoptr(GString) hub = g_string_new(NULL);

	/* longer descriptor for SuperSpeed */
	if (fu_usb_device_get_spec(self) >= 0x0300)
		value = 0x2a;
	if (!fu_usb_device_control_transfer(self,
					    FU_USB_DIRECTION_DEVICE_TO_HOST,
					    FU_USB_REQUEST_TYPE_CLASS,
					    FU_USB_RECIPIENT_DEVICE,
					    0x06, /* LIBUSB_REQUEST_GET_DESCRIPTOR */
					    value << 8,
					    0x00,
					    data,
					    sizeof(data),
					    &sz,
					    1000,
					    NULL,
					    error)) {
		g_prefix_error_literal(error, "failed to get USB descriptor: ");
		return FALSE;
	}
	fu_dump_raw(G_LOG_DOMAIN, "HUB_DT", data, sz);

	/* for USB 3: size is fixed as max ports is 15,
	 * for USB 2: size is variable as max ports is 255 */
	if (fu_usb_device_get_spec(self) >= 0x0300 && sz == 0x0C) {
		g_string_append_printf(hub, "%02X", data[0x0B]);
		g_string_append_printf(hub, "%02X", data[0x0A]);
	} else if (sz >= 9) {
		gsize numbytes = fu_common_align_up(data[2] + 1, 0x03) / 8;
		for (gsize i = 0; i < numbytes; i++) {
			guint8 tmp = 0x0;
			if (!fu_memread_uint8_safe(data, sz, 7 + i, &tmp, error))
				return FALSE;
			g_string_append_printf(hub, "%02X", tmp);
		}
	}
	if (hub->len > 0)
		fu_device_add_instance_str(FU_DEVICE(self), "HUB", hub->str);
	return fu_device_build_instance_id_full(FU_DEVICE(self),
						FU_DEVICE_INSTANCE_FLAG_GENERIC |
						    FU_DEVICE_INSTANCE_FLAG_VISIBLE |
						    FU_DEVICE_INSTANCE_FLAG_QUIRKS,
						error,
						"USB",
						"VID",
						"PID",
						"HUB",
						NULL);
}

static gboolean
fu_usb_device_open_internal(FuUsbDevice *self, GError **error)
{
	FuUsbDevicePrivate *priv = GET_PRIVATE(self);
#ifdef HAVE_LIBUSB_WRAP_SYS_DEVICE
	FuContext *ctx = fu_device_get_context(FU_DEVICE(self));
	libusb_context *usb_ctx = fu_context_get_data(ctx, "libusb_context");
#endif
	gint rc = 0;

	/* sanity check */
	if (fu_device_has_flag(FU_DEVICE(self), FWUPD_DEVICE_FLAG_EMULATED))
		return TRUE;
	if (priv->handle != NULL) {
		g_set_error(error,
			    FWUPD_ERROR,
			    FWUPD_ERROR_NOTHING_TO_DO,
			    "device %04x:%04x is already open",
			    fu_device_get_vid(FU_DEVICE(self)),
			    fu_device_get_pid(FU_DEVICE(self)));
		return FALSE;
	}

	/* libusb or kernel */
	if (priv->usb_device != NULL) {
		rc = libusb_open(priv->usb_device, &priv->handle);
	} else {
#if defined(HAVE_LIBUSB_WRAP_SYS_DEVICE)
		gint fd;
		FuIOChannel *io_channel = fu_udev_device_get_io_channel(FU_UDEV_DEVICE(self));
		if (io_channel == NULL) {
			g_set_error_literal(error,
					    FWUPD_ERROR,
					    FWUPD_ERROR_INTERNAL,
					    "no io channel");
			return FALSE;
		}
		fd = fu_io_channel_unix_get_fd(io_channel);
		rc = libusb_wrap_sys_device(usb_ctx, fd, &priv->handle);
#else
		g_set_error_literal(error,
				    FWUPD_ERROR,
				    FWUPD_ERROR_NOT_SUPPORTED,
				    "libusb_wrap_sys_device not available, can't wrap fd");
		return FALSE;
#endif
	}
	if (!fu_usb_device_libusb_error_to_gerror(rc, error)) {
		if (priv->handle != NULL)
			libusb_close(priv->handle);
		priv->handle = NULL;
		return FALSE;
	}

	/* success */
	return TRUE;
}

static gboolean
fu_usb_device_close_internal(FuUsbDevice *self, GError **error)
{
	FuUsbDevicePrivate *priv = GET_PRIVATE(self);

	/* emulated */
	if (fu_device_has_flag(FU_DEVICE(self), FWUPD_DEVICE_FLAG_EMULATED))
		return TRUE;
	if (priv->handle == NULL)
		return fu_usb_device_not_open_error(self, error);

	libusb_close(priv->handle);
	priv->handle = NULL;
	return TRUE;
}

static gboolean
fu_usb_device_set_configuration_internal(FuUsbDevice *self, gint configuration, GError **error)
{
	FuUsbDevicePrivate *priv = GET_PRIVATE(self);
	gint rc;
	gint config_tmp = 0;

	g_return_val_if_fail(FU_IS_USB_DEVICE(self), FALSE);
	g_return_val_if_fail(error == NULL || *error == NULL, FALSE);

	/* emulated */
	if (fu_device_has_flag(FU_DEVICE(self), FWUPD_DEVICE_FLAG_EMULATED))
		return TRUE;
	if (priv->handle == NULL)
		return fu_usb_device_not_open_error(self, error);

	/* verify we've not already set the same configuration */
	rc = libusb_get_configuration(priv->handle, &config_tmp);
	if (rc != LIBUSB_SUCCESS)
		return fu_usb_device_libusb_error_to_gerror(rc, error);
	if (config_tmp == configuration)
		return TRUE;

	/* different, so change */
	rc = libusb_set_configuration(priv->handle, configuration);
	return fu_usb_device_libusb_error_to_gerror(rc, error);
}

static gboolean
fu_usb_device_open(FuDevice *device, GError **error)
{
	FuUsbDevice *self = FU_USB_DEVICE(device);
	FuUsbDevicePrivate *priv = GET_PRIVATE(self);

	g_return_val_if_fail(FU_IS_USB_DEVICE(self), FALSE);
	g_return_val_if_fail(error == NULL || *error == NULL, FALSE);

	/* self tests */
	if (fu_device_has_flag(FU_DEVICE(self), FWUPD_DEVICE_FLAG_EMULATED))
		return TRUE;

	/* FuUdevDevice->open */
	if (!FU_DEVICE_CLASS(fu_usb_device_parent_class)->open(device, error))
		return FALSE;

	/* open */
	if (!fu_usb_device_open_internal(self, error)) {
		g_prefix_error_literal(error, "failed to open device: ");
		return FALSE;
	}

	/* if set */
	if (priv->configuration >= 0) {
		if (!fu_usb_device_set_configuration_internal(self, priv->configuration, error)) {
			g_prefix_error_literal(error, "failed to set configuration: ");
			return FALSE;
		}
	}

	/* claim interfaces */
	for (guint i = 0; priv->device_interfaces != NULL && i < priv->device_interfaces->len;
	     i++) {
		FuUsbDeviceInterface *iface = g_ptr_array_index(priv->device_interfaces, i);
		if (!fu_usb_device_claim_interface(self,
						   iface->number,
						   FU_USB_DEVICE_CLAIM_FLAG_KERNEL_DRIVER,
						   error)) {
			g_prefix_error(error, "failed to claim interface 0x%02x: ", iface->number);
			return FALSE;
		}
		iface->claimed = TRUE;
	}

	/* so that we can watch for the device to appear in the non-udev hotplug case */
	fu_device_retry_add_recovery(FU_DEVICE(self), FWUPD_ERROR, FWUPD_ERROR_NOT_FOUND, NULL);
	return TRUE;
}

/**
 * fu_usb_device_get_bus:
 * @self: a #FuUsbDevice
 *
 * Gets the USB bus number for the device.
 *
 * Return value: The 8-bit bus number
 *
 * Since: 2.0.0
 **/
guint8
fu_usb_device_get_bus(FuUsbDevice *self)
{
	FuUsbDevicePrivate *priv = GET_PRIVATE(self);
	if (fu_device_has_flag(FU_DEVICE(self), FWUPD_DEVICE_FLAG_EMULATED))
		return 0x0;
	return priv->busnum;
}

/**
 * fu_usb_device_get_address:
 * @self: a #FuUsbDevice
 *
 * Gets the USB address for the device.
 *
 * Return value: The 8-bit address
 *
 * Since: 2.0.0
 **/
guint8
fu_usb_device_get_address(FuUsbDevice *self)
{
	FuUsbDevicePrivate *priv = GET_PRIVATE(self);
	if (fu_device_has_flag(FU_DEVICE(self), FWUPD_DEVICE_FLAG_EMULATED))
		return 0x0;
	return priv->devnum;
}

/**
 * fu_usb_device_get_manufacturer_index:
 * @self: a #FuUsbDevice
 *
 * Gets the index for the iManufacturer string descriptor.
 *
 * Return value: a string descriptor index.
 *
 * Since: 2.0.4
 **/
guint8
fu_usb_device_get_manufacturer_index(FuUsbDevice *self)
{
	FuUsbDevicePrivate *priv = GET_PRIVATE(self);
	g_return_val_if_fail(FU_IS_USB_DEVICE(self), 0);
	return priv->desc.iManufacturer;
}

/**
 * fu_usb_device_get_product_index:
 * @self: a #FuUsbDevice
 *
 * Gets the index for the iProduct string descriptor.
 *
 * Return value: a string descriptor index.
 *
 * Since: 2.0.4
 **/
guint8
fu_usb_device_get_product_index(FuUsbDevice *self)
{
	FuUsbDevicePrivate *priv = GET_PRIVATE(self);
	g_return_val_if_fail(FU_IS_USB_DEVICE(self), 0);
	return priv->desc.iProduct;
}

/* not defined in FreeBSD */
#ifndef HAVE_LIBUSB_GET_PARENT
static libusb_device *
libusb_get_parent(libusb_device *dev) /* nocheck:name */
{
	return NULL;
}
#endif

static void
fu_usb_device_build_parent_port_number(GString *str, libusb_device *dev)
{
	libusb_device *parent = libusb_get_parent(dev);
	if (parent != NULL)
		fu_usb_device_build_parent_port_number(str, parent);
	g_string_append_printf(str, "%02x:", libusb_get_port_number(dev));
}

static gchar *
fu_usb_device_build_physical_id(struct libusb_device *dev)
{
	GString *platform_id;

	/* build a topology of the device */
	platform_id = g_string_new("usb:");
	g_string_append_printf(platform_id, "%02x:", libusb_get_bus_number(dev));
	fu_usb_device_build_parent_port_number(platform_id, dev);
	g_string_truncate(platform_id, platform_id->len - 1);
	return g_string_free(platform_id, FALSE);
}

static gboolean
fu_usb_device_setup(FuDevice *device, GError **error)
{
	FuUsbDevice *self = FU_USB_DEVICE(device);

	g_return_val_if_fail(FU_IS_USB_DEVICE(self), FALSE);
	g_return_val_if_fail(error == NULL || *error == NULL, FALSE);

	/* get vendor */
	if (fu_device_get_vendor(device) == NULL) {
		guint idx = fu_usb_device_get_manufacturer_index(self);
		if (idx != 0x00) {
			g_autofree gchar *tmp = NULL;
			g_autoptr(GError) error_local = NULL;
			tmp = fu_usb_device_get_string_descriptor(self, idx, &error_local);
			if (tmp != NULL)
				fu_device_set_vendor(device, g_strchomp(tmp));
			else
				g_debug(
				    "failed to load manufacturer string for usb device %u:%u: %s",
				    fu_usb_device_get_bus(self),
				    fu_usb_device_get_address(self),
				    error_local->message);
		}
	}

	/* get product */
	if (fu_device_get_name(device) == NULL) {
		guint idx = fu_usb_device_get_product_index(self);
		if (idx != 0x00) {
			g_autofree gchar *tmp = NULL;
			g_autoptr(GError) error_local = NULL;
			tmp = fu_usb_device_get_string_descriptor(self, idx, &error_local);
			if (tmp != NULL)
				fu_device_set_name(device, g_strchomp(tmp));
			else
				g_debug("failed to load product string for usb device %u:%u: %s",
					fu_usb_device_get_bus(self),
					fu_usb_device_get_address(self),
					error_local->message);
		}
	}

	/* get serial number */
	if (!fu_device_has_private_flag(device, FU_DEVICE_PRIVATE_FLAG_NO_SERIAL_NUMBER) &&
	    fu_device_get_serial(device) == NULL) {
		guint idx = fu_usb_device_get_serial_number_index(self);
		if (idx != 0x00) {
			g_autofree gchar *tmp = NULL;
			g_autoptr(GError) error_local = NULL;
			tmp = fu_usb_device_get_string_descriptor(self, idx, &error_local);
			if (tmp != NULL)
				fu_device_set_serial(device, g_strchomp(tmp));
			else
				g_debug(
				    "failed to load serial number string for usb device %u:%u: %s",
				    fu_usb_device_get_bus(self),
				    fu_usb_device_get_address(self),
				    error_local->message);
		}
	}

	/* get the hub descriptor if this is a hub */
	if (fu_usb_device_get_class(self) == FU_USB_CLASS_HUB) {
		if (!fu_usb_device_query_hub(self, error))
			return FALSE;
	}

	/* success */
	return TRUE;
}

static gboolean
fu_usb_device_ready(FuDevice *device, GError **error)
{
	FuUsbDevice *self = FU_USB_DEVICE(device);
	g_autoptr(GPtrArray) intfs = NULL;

	/* self tests */
	if (fu_device_has_flag(FU_DEVICE(self), FWUPD_DEVICE_FLAG_EMULATED))
		return TRUE;

	/* get the interface GUIDs */
	intfs = fu_usb_device_get_interfaces(self, error);
	if (intfs == NULL) {
		g_prefix_error_literal(error, "failed to get interfaces: ");
		return FALSE;
	}

	/* add fallback icon if there is nothing added already */
	if (fu_device_get_icons(device)->len == 0) {
		for (guint i = 0; i < intfs->len; i++) {
			FuUsbInterface *intf = g_ptr_array_index(intfs, i);

			/* video: i.e. a webcam */
			if (fu_usb_interface_get_class(intf) == FU_USB_CLASS_VIDEO &&
			    fu_usb_interface_get_subclass(intf) == 0x01) {
				fu_device_add_icon(device, "camera-web");
			}

			/* audio */
			if (fu_usb_interface_get_class(intf) == FU_USB_CLASS_AUDIO)
				fu_device_add_icon(device, "audio-card");

			/* mass storage */
			if (fu_usb_interface_get_class(intf) == FU_USB_CLASS_MASS_STORAGE)
				fu_device_add_icon(device, "drive-harddisk");

			/* printer */
			if (fu_usb_interface_get_class(intf) == FU_USB_CLASS_PRINTER)
				fu_device_add_icon(device, "printer");
		}
	}

	/* success */
	return TRUE;
}

static gboolean
fu_usb_device_close(FuDevice *device, GError **error)
{
	FuUsbDevice *self = FU_USB_DEVICE(device);
	FuUsbDevicePrivate *priv = GET_PRIVATE(self);

	g_return_val_if_fail(FU_IS_USB_DEVICE(self), FALSE);
	g_return_val_if_fail(error == NULL || *error == NULL, FALSE);

	/* release interfaces, ignoring errors */
	for (guint i = 0; priv->device_interfaces != NULL && i < priv->device_interfaces->len;
	     i++) {
		FuUsbDeviceInterface *iface = g_ptr_array_index(priv->device_interfaces, i);
		FuUsbDeviceClaimFlags claim_flags = FU_USB_DEVICE_CLAIM_FLAG_NONE;
		g_autoptr(GError) error_local = NULL;
		if (!iface->claimed)
			continue;
		if (!fu_device_has_flag(device, FWUPD_DEVICE_FLAG_WAIT_FOR_REPLUG)) {
			g_debug("re-binding kernel driver as not waiting for replug");
			claim_flags |= FU_USB_DEVICE_CLAIM_FLAG_KERNEL_DRIVER;
		}
		if (!fu_usb_device_release_interface(self,
						     iface->number,
						     claim_flags,
						     &error_local)) {
			if (g_error_matches(error_local, FWUPD_ERROR, FWUPD_ERROR_NOT_FOUND) ||
			    g_error_matches(error_local, FWUPD_ERROR, FWUPD_ERROR_INTERNAL)) {
				g_debug("failed to release interface 0x%02x: %s",
					iface->number,
					error_local->message);
			} else {
				g_warning("failed to release interface 0x%02x: %s",
					  iface->number,
					  error_local->message);
			}
		}
		iface->claimed = FALSE;
	}

	/* success */
	if (!fu_usb_device_close_internal(self, error))
		return FALSE;

	/* FuUdevDevice->close */
	return FU_DEVICE_CLASS(fu_usb_device_parent_class)->close(device, error);
}

static gboolean
fu_usb_device_probe_bos_descriptor(FuUsbDevice *self, FuUsbBosDescriptor *bos, GError **error)
{
	g_autofree gchar *str = NULL;
	g_autoptr(FuFirmware) ds20 = NULL;
	g_autoptr(GInputStream) stream = NULL;
	g_autoptr(FuDeviceLocker) usb_locker = NULL;

	/* parse either type */
	stream =
	    fu_firmware_get_image_by_id_stream(FU_FIRMWARE(bos), FU_FIRMWARE_ID_PAYLOAD, error);
	if (stream == NULL)
		return FALSE;
	ds20 = fu_firmware_new_from_gtypes(stream,
					   0x0,
					   FU_FIRMWARE_PARSE_FLAG_NONE,
					   error,
					   FU_TYPE_USB_DEVICE_FW_DS20,
					   FU_TYPE_USB_DEVICE_MS_DS20,
					   G_TYPE_INVALID);
	if (ds20 == NULL) {
		g_prefix_error_literal(error, "failed to parse: ");
		return FALSE;
	}
	str = fu_firmware_to_string(ds20);
	g_debug("DS20: %s", str);

	/* Microsoft descriptors are not useful at the moment */
	if (FU_IS_USB_DEVICE_MS_DS20(ds20))
		return TRUE;

	/* set the quirks onto the device */
	usb_locker = fu_device_locker_new_full(FU_DEVICE(self),
					       fu_usb_device_open,
					       fu_usb_device_close,
					       error);
	if (usb_locker == NULL)
		return FALSE;
	if (!fu_usb_device_ds20_apply_to_device(FU_USB_DEVICE_DS20(ds20), self, error)) {
		g_prefix_error_literal(error, "failed to apply DS20 data: ");
		return FALSE;
	}

	/* success */
	return TRUE;
}

static GBytes *
fu_usb_device_load_descriptor(FuUsbDevice *self, const gchar *basename, GError **error)
{
	FuDeviceEvent *event = NULL;
	gsize bufsz = 0;
	g_autofree gchar *buf = NULL;
	g_autofree gchar *event_id = NULL;
	g_autofree gchar *fn = NULL;
	g_autoptr(GBytes) data = NULL;

	/* build event key either for load or save */
	if (fu_device_has_flag(FU_DEVICE(self), FWUPD_DEVICE_FLAG_EMULATED) ||
	    fu_context_has_flag(fu_device_get_context(FU_DEVICE(self)),
				FU_CONTEXT_FLAG_SAVE_EVENTS)) {
		event_id = g_strdup_printf("LoadDescriptor:basename=%s", basename);
	}

	/* emulated */
	if (fu_device_has_flag(FU_DEVICE(self), FWUPD_DEVICE_FLAG_EMULATED)) {
		/* lots of old emulations don't have this, returning FWUPD_ERROR_NOT_FOUND */
		event = fu_device_load_event(FU_DEVICE(self), event_id, error);
		if (event == NULL)
			return NULL;
		data = fu_device_event_get_bytes(event, "Data", error);
		if (data == NULL)
			return NULL;
		return g_steal_pointer(&data);
	}

	/* save */
	if (fu_context_has_flag(fu_device_get_context(FU_DEVICE(self)),
				FU_CONTEXT_FLAG_SAVE_EVENTS)) {
		event = fu_device_save_event(FU_DEVICE(self), event_id);
	}

	/* kernel weirdness -- fseek(fd, 0L, SEEK_END) always gives us 0x10011 */
	fn = g_build_filename(fu_device_get_backend_id(FU_DEVICE(self)), basename, NULL);
	if (!g_file_test(fn, G_FILE_TEST_EXISTS)) {
		g_set_error(error,
			    FWUPD_ERROR,
			    FWUPD_ERROR_NOT_SUPPORTED,
			    "no descriptors, expected %s",
			    fn);
		return NULL;
	}
	if (!g_file_get_contents(fn, &buf, &bufsz, error)) {
		fwupd_error_convert(error);
		return NULL;
	}
	data = g_bytes_new_take(g_steal_pointer(&buf), bufsz);
	if (data == NULL)
		return NULL;

	/* save */
	if (event != NULL)
		fu_device_event_set_bytes(event, "Data", data);

	/* success */
	return g_steal_pointer(&data);
}

static gboolean
fu_usb_device_parse_bos_descriptor(FuUsbDevice *self, GBytes *blob, GError **error)
{
	FuUsbDevicePrivate *priv = GET_PRIVATE(self);
	g_autoptr(FuFirmware) firmware = fu_linear_firmware_new(FU_TYPE_USB_BOS_DESCRIPTOR);
	g_autoptr(GError) error_local = NULL;
	g_autoptr(GPtrArray) imgs = NULL;

	if (!fu_firmware_parse_bytes(firmware,
				     blob,
				     0x0,
				     FU_FIRMWARE_PARSE_FLAG_NONE,
				     &error_local)) {
		if (g_error_matches(error_local, FWUPD_ERROR, FWUPD_ERROR_INVALID_FILE) ||
		    g_error_matches(error_local, FWUPD_ERROR, FWUPD_ERROR_INVALID_DATA)) {
			g_debug("ignoring: %s", error_local->message);
		} else {
			g_propagate_error(error, g_steal_pointer(&error_local));
			return FALSE;
		}
	}

	/* copy from container */
	imgs = fu_firmware_get_images(firmware);
	for (guint i = 0; i < imgs->len; i++) {
		FuFirmware *img = g_ptr_array_index(imgs, i);
		g_ptr_array_add(priv->bos_descriptors, g_object_ref(img));
	}

	/* success */
	return TRUE;
}

static gboolean
fu_usb_device_ensure_bos_descriptors(FuUsbDevice *self, GError **error)
{
	FuUsbDevicePrivate *priv = GET_PRIVATE(self);

	/* already set */
	if (priv->bos_descriptors_valid)
		return TRUE;

	/* libusb or kernel */
	if (priv->usb_device != NULL) {
		gint rc;
		guint8 num_device_caps;
		struct libusb_bos_descriptor *bos = NULL;
		g_autoptr(FuDeviceLocker) usb_locker = NULL;

		/* not supported, so there is no point opening */
		if (fu_usb_device_get_spec(self) <= 0x0200) {
			g_set_error(error,
				    FWUPD_ERROR,
				    FWUPD_ERROR_NOT_SUPPORTED,
				    "not available as bcdUSB 0x%04x <= 0x0200",
				    fu_usb_device_get_spec(self));
			return FALSE;
		}
		usb_locker = fu_device_locker_new(FU_DEVICE(self), error);
		if (usb_locker == NULL)
			return FALSE;
		if (priv->handle == NULL) {
			fu_usb_device_not_open_error(self, error);
			return FALSE;
		}

		rc = libusb_get_bos_descriptor(priv->handle, &bos);
		if (!fu_usb_device_libusb_error_to_gerror(rc, error))
			return FALSE;
#ifdef __FreeBSD__
		num_device_caps = bos->bNumDeviceCapabilities;
#else
		num_device_caps = bos->bNumDeviceCaps;
#endif
		for (guint i = 0; i < num_device_caps; i++) {
			FuUsbBosDescriptor *bos_descriptor = NULL;
			g_autoptr(FuUsbBosHdr) st_hdr = NULL;

			/* i hate this: libusb doesn't give us the size of the buffer... */
			st_hdr = fu_usb_bos_hdr_parse(
			    (const guint8 *)bos->dev_capability[i],
			    sizeof(struct libusb_bos_dev_capability_descriptor),
			    0x0,
			    error);
			if (st_hdr == NULL)
				return FALSE;
			bos_descriptor = fu_usb_bos_descriptor_new(st_hdr);
			if (bos_descriptor == NULL)
				continue;
			g_ptr_array_add(priv->bos_descriptors, bos_descriptor);
		}
		libusb_free_bos_descriptor(bos);
	} else {
		g_autoptr(GError) error_local = NULL;
		g_autoptr(GBytes) blob = NULL;

		/* this is optional */
		blob = fu_usb_device_load_descriptor(self, "bos_descriptors", &error_local);
		if (blob == NULL) {
			if (!g_error_matches(error_local, FWUPD_ERROR, FWUPD_ERROR_NOT_SUPPORTED) &&
			    !g_error_matches(error_local, FWUPD_ERROR, FWUPD_ERROR_NOT_FOUND)) {
				g_propagate_error(error, g_steal_pointer(&error_local));
				return FALSE;
			}
		} else {
			if (!fu_usb_device_parse_bos_descriptor(self, blob, error))
				return FALSE;
		}
	}

	priv->bos_descriptors_valid = TRUE;
	return TRUE;
}

static gboolean
fu_usb_device_probe_bos_descriptors(FuUsbDevice *self, GError **error)
{
	FuUsbDevicePrivate *priv = GET_PRIVATE(self);
	g_autoptr(GError) error_local = NULL;

	/* already matched a quirk entry */
	if (fu_device_has_private_flag(FU_DEVICE(self), FU_DEVICE_PRIVATE_FLAG_NO_PROBE)) {
		g_set_error_literal(error, FWUPD_ERROR, FWUPD_ERROR_NOT_SUPPORTED, "not probing");
		return FALSE;
	}

	if (!fu_usb_device_ensure_bos_descriptors(self, &error_local)) {
		if (g_error_matches(error_local, FWUPD_ERROR, FWUPD_ERROR_READ) ||
		    g_error_matches(error_local, FWUPD_ERROR, FWUPD_ERROR_INTERNAL)) {
			g_debug("ignoring missing BOS descriptor: %s", error_local->message);
			return TRUE;
		}
		g_propagate_error(error, g_steal_pointer(&error_local));
		fwupd_error_convert(error);
		return FALSE;
	}
	for (guint i = 0; i < priv->bos_descriptors->len; i++) {
		FuUsbBosDescriptor *bos = g_ptr_array_index(priv->bos_descriptors, i);
		g_autoptr(GError) error_loop = NULL;

		if (fu_usb_bos_descriptor_get_capability(bos) != 0x5)
			continue;
		if (!fu_usb_device_probe_bos_descriptor(self, bos, &error_loop)) {
#ifdef SUPPORTED_BUILD
			g_debug("failed to parse platform BOS descriptor: %s", error_loop->message);
#else
			g_warning("failed to parse platform BOS descriptor: %s",
				  error_loop->message);
#endif
		}
	}
	return TRUE;
}

static gboolean
fu_usb_device_probe_internal(FuUsbDevice *self, GError **error)
{
	FuUsbDevicePrivate *priv = GET_PRIVATE(self);

	/* libusb or kernel */
	if (priv->usb_device != NULL) {
		gint rc;
		rc = libusb_get_device_descriptor(priv->usb_device, &priv->desc);
		if (rc != LIBUSB_SUCCESS) {
			g_set_error(error,
				    FWUPD_ERROR,
				    FWUPD_ERROR_INTERNAL,
				    "Failed to get USB descriptor for device: %s",
				    libusb_strerror(rc));
			return FALSE;
		}
		priv->busnum = libusb_get_bus_number(priv->usb_device);
		priv->devnum = libusb_get_device_address(priv->usb_device);
		fu_device_set_vid(FU_DEVICE(self), priv->desc.idVendor);
		fu_device_set_pid(FU_DEVICE(self), priv->desc.idProduct);
	} else {
		guint64 busnum = 0;
		guint64 devnum = 0;
		g_autofree gchar *busnum_str = NULL;
		g_autofree gchar *devnum_str = NULL;
		g_autofree gchar *device_file = NULL;

		/* get bus number */
		busnum_str = fu_udev_device_read_property(FU_UDEV_DEVICE(self), "BUSNUM", error);
		if (busnum_str == NULL)
			return FALSE;
		if (!fu_strtoull(busnum_str, &busnum, 0, G_MAXUINT8, FU_INTEGER_BASE_10, error))
			return FALSE;
		priv->busnum = (guint8)busnum;

		/* get device address */
		devnum_str = fu_udev_device_read_property(FU_UDEV_DEVICE(self), "DEVNUM", error);
		if (devnum_str == NULL)
			return FALSE;
		if (!fu_strtoull(devnum_str, &devnum, 0, G_MAXUINT8, FU_INTEGER_BASE_10, error))
			return FALSE;
		priv->devnum = (guint8)devnum;

		/* load descriptors */
		if (!fu_usb_device_ensure_interfaces(self, error))
			return FALSE;
		if (!fu_usb_device_ensure_bos_descriptors(self, error))
			return FALSE;

		/* we have to open a fd for libusb */
		device_file = g_strdup_printf("/dev/bus/usb/%03u/%03u", priv->busnum, priv->devnum);
		fu_udev_device_set_device_file(FU_UDEV_DEVICE(self), device_file);
		fu_udev_device_add_open_flag(FU_UDEV_DEVICE(self), FU_IO_CHANNEL_OPEN_FLAG_READ);
		fu_udev_device_add_open_flag(FU_UDEV_DEVICE(self), FU_IO_CHANNEL_OPEN_FLAG_WRITE);
	}

	/* this does not change on plug->unplug->plug */
	if (priv->usb_device != NULL) {
		g_autofree gchar *platform_id = fu_usb_device_build_physical_id(priv->usb_device);
		fu_device_set_physical_id(FU_DEVICE(self), platform_id);
	} else {
		g_autofree gchar *platform_id =
		    g_path_get_basename(fu_udev_device_get_sysfs_path(FU_UDEV_DEVICE(self)));
		fu_device_set_physical_id(FU_DEVICE(self), platform_id);
	}

	/* success */
	return TRUE;
}

static gboolean
fu_usb_device_probe(FuDevice *device, GError **error)
{
	FuUsbDevice *self = FU_USB_DEVICE(device);
	guint16 release;
	g_autoptr(GError) error_bos = NULL;
	g_autoptr(GPtrArray) intfs = NULL;

	/* load hardware info */
	if (!fu_device_has_flag(FU_DEVICE(self), FWUPD_DEVICE_FLAG_EMULATED)) {
		if (!fu_usb_device_probe_internal(self, error))
			return FALSE;
	}

	/* set vendor ID */
	fu_device_build_vendor_id_u16(device, "USB", fu_device_get_vid(device));

	/* set the version if the release has been set */
	release = fu_usb_device_get_release(self);
	if (release != 0x0 &&
	    fu_device_get_version_format(device) == FWUPD_VERSION_FORMAT_UNKNOWN &&
	    !fu_device_has_private_flag(FU_DEVICE(self),
					FU_DEVICE_PRIVATE_FLAG_NO_GENERIC_VERSION)) {
		fu_device_set_version_format(device, FWUPD_VERSION_FORMAT_BCD);
		fu_device_set_version_raw(device, release);
	}

	/* add GUIDs in order of priority */
	fu_device_add_instance_u16(device, "REV", release);
	fu_device_build_instance_id_full(device,
					 FU_DEVICE_INSTANCE_FLAG_GENERIC |
					     FU_DEVICE_INSTANCE_FLAG_QUIRKS,
					 NULL,
					 "USB",
					 "VID",
					 NULL);
	fu_device_build_instance_id_full(device,
					 FU_DEVICE_INSTANCE_FLAG_GENERIC |
					     FU_DEVICE_INSTANCE_FLAG_VISIBLE |
					     FU_DEVICE_INSTANCE_FLAG_QUIRKS,
					 NULL,
					 "USB",
					 "VID",
					 "PID",
					 NULL);
	if (fu_device_has_private_flag_quark(device, quarks[QUARK_ADD_INSTANCE_ID_REV])) {
		fu_device_build_instance_id_full(device,
						 FU_DEVICE_INSTANCE_FLAG_GENERIC |
						     FU_DEVICE_INSTANCE_FLAG_VISIBLE |
						     FU_DEVICE_INSTANCE_FLAG_QUIRKS,
						 NULL,
						 "USB",
						 "VID",
						 "PID",
						 "REV",
						 NULL);
	}

	/* add the interface GUIDs */
	intfs = fu_usb_device_get_interfaces(self, error);
	if (intfs == NULL) {
		g_prefix_error_literal(error, "failed to get interfaces: ");
		return FALSE;
	}
	for (guint i = 0; i < intfs->len; i++) {
		FuUsbInterface *intf = g_ptr_array_index(intfs, i);
		fu_device_add_instance_u8(device, "CLASS", fu_usb_interface_get_class(intf));
		fu_device_add_instance_u8(device, "SUBCLASS", fu_usb_interface_get_subclass(intf));
		fu_device_add_instance_u8(device, "PROT", fu_usb_interface_get_protocol(intf));
		fu_device_build_instance_id_full(device,
						 FU_DEVICE_INSTANCE_FLAG_GENERIC |
						     FU_DEVICE_INSTANCE_FLAG_QUIRKS,
						 NULL,
						 "USB",
						 "CLASS",
						 NULL);
		fu_device_build_instance_id_full(device,
						 FU_DEVICE_INSTANCE_FLAG_GENERIC |
						     FU_DEVICE_INSTANCE_FLAG_QUIRKS,
						 NULL,
						 "USB",
						 "CLASS",
						 "SUBCLASS",
						 NULL);
		fu_device_build_instance_id_full(device,
						 FU_DEVICE_INSTANCE_FLAG_GENERIC |
						     FU_DEVICE_INSTANCE_FLAG_QUIRKS,
						 NULL,
						 "USB",
						 "CLASS",
						 "SUBCLASS",
						 "PROT",
						 NULL);
	}

	/* add 2 levels of parent IDs */
	if (fu_device_get_physical_id(device) != NULL) {
		g_autofree gchar *platform_id_tmp = g_strdup(fu_device_get_physical_id(device));
		for (guint i = 0; i < 2; i++) {
			gchar *tok = g_strrstr(platform_id_tmp, ":");
			if (tok == NULL)
				break;
			*tok = '\0';
			if (g_strcmp0(platform_id_tmp, "usb") == 0)
				break;
			fu_device_add_parent_physical_id(device, platform_id_tmp);
		}
	}

	/* parse the platform capability BOS descriptors for quirks */
	if (!fu_usb_device_probe_bos_descriptors(self, &error_bos)) {
		if (g_error_matches(error_bos, FWUPD_ERROR, FWUPD_ERROR_NOT_SUPPORTED)) {
			g_debug("ignoring: %s", error_bos->message);
		} else {
			g_warning("failed to load BOS descriptor from USB device: %s",
				  error_bos->message);
		}
	}

	/* success */
	return TRUE;
}

/**
 * fu_usb_device_get_release:
 * @self: a #FuUsbDevice
 *
 * Gets the device release.
 *
 * Returns: integer, or 0x0 if unset or invalid
 *
 * Since: 2.0.0
 **/
guint16
fu_usb_device_get_release(FuUsbDevice *self)
{
	FuUsbDevicePrivate *priv = GET_PRIVATE(self);
	g_return_val_if_fail(FU_IS_USB_DEVICE(self), 0x0000);
	return priv->desc.bcdDevice;
}

/**
 * fu_usb_device_get_spec:
 * @self: a #FuUsbDevice
 *
 * Gets the string USB revision for the device.
 *
 * Returns: a specification revision in BCD format, or 0x0 if not supported
 *
 * Since: 1.3.4
 **/
guint16
fu_usb_device_get_spec(FuUsbDevice *self)
{
	FuUsbDevicePrivate *priv = GET_PRIVATE(self);
	g_return_val_if_fail(FU_IS_USB_DEVICE(self), 0x0);
	return priv->desc.bcdUSB;
}

/**
 * fu_usb_device_get_class:
 * @self: a #FuUsbDevice
 *
 * Gets the device class, typically a #FuUsbClass.
 *
 * Return value: a #FuUsbClass, e.g. %FU_USB_CLASS_HUB.
 *
 * Since: 2.0.0
 **/
FuUsbClass
fu_usb_device_get_class(FuUsbDevice *self)
{
	FuUsbDevicePrivate *priv = GET_PRIVATE(self);
	g_return_val_if_fail(FU_IS_USB_DEVICE(self), 0x0);
	return priv->desc.bDeviceClass;
}

static void
fu_usb_device_add_interface_internal(FuUsbDevice *self, FuUsbInterface *iface)
{
	FuUsbDevicePrivate *priv = GET_PRIVATE(self);
	g_ptr_array_add(priv->interfaces, g_object_ref(iface));
}

static void
fu_usb_device_incorporate(FuDevice *device, FuDevice *device_donor)
{
	FuUsbDevice *self = FU_USB_DEVICE(device);
	FuUsbDevice *donor = FU_USB_DEVICE(device_donor);
	FuUsbDevicePrivate *priv = GET_PRIVATE(self);
	FuUsbDevicePrivate *priv_donor = GET_PRIVATE(donor);

	fu_usb_device_set_dev(self, priv_donor->usb_device);

	/* all descriptor fields */
	if (priv->desc.bLength == 0x0)
		memcpy(&priv->desc, &priv_donor->desc, sizeof(priv->desc)); /* nocheck:blocked */

	if (priv->interfaces->len == 0 && priv_donor->interfaces_valid) {
		for (guint i = 0; i < priv_donor->interfaces->len; i++) {
			FuUsbInterface *iface = g_ptr_array_index(priv_donor->interfaces, i);
			g_ptr_array_add(priv->interfaces, g_object_ref(iface));
		}
		priv->interfaces_valid = TRUE;
	}
	if (priv->bos_descriptors->len == 0 && priv_donor->bos_descriptors_valid) {
		for (guint i = 0; i < priv_donor->bos_descriptors->len; i++) {
			FuUsbBosDescriptor *bos_descriptor =
			    g_ptr_array_index(priv_donor->bos_descriptors, i);
			g_ptr_array_add(priv->bos_descriptors, g_object_ref(bos_descriptor));
		}
		priv->bos_descriptors_valid = TRUE;
	}
	if (priv->hid_descriptors->len == 0) {
		for (guint i = 0; i < priv_donor->hid_descriptors->len; i++) {
			FuUsbHidDescriptor *hid_descriptor =
			    g_ptr_array_index(priv_donor->hid_descriptors, i);
			g_ptr_array_add(priv->hid_descriptors, g_object_ref(hid_descriptor));
		}
	}
	if (priv->cfg_descriptors->len == 0) {
		for (guint i = 0; i < priv_donor->cfg_descriptors->len; i++) {
			FuUsbConfigDescriptor *cfg_descriptor =
			    g_ptr_array_index(priv_donor->cfg_descriptors, i);
			g_ptr_array_add(priv->cfg_descriptors, g_object_ref(cfg_descriptor));
		}
	}
}

static gchar *
fu_usb_device_convert_version(FuDevice *device, guint64 version_raw)
{
	return fu_version_from_uint16(version_raw, fu_device_get_version_format(device));
}

/**
 * fu_usb_device_control_transfer:
 * @self: a #FuUsbDevice
 * @request_type: the request type field for the setup packet
 * @request: the request field for the setup packet
 * @value: the value field for the setup packet
 * @idx: the index field for the setup packet
 * @data: (array length=length): a suitably-sized data buffer for
 * either input or output
 * @length: the length field for the setup packet.
 * @actual_length: (out) (optional): the actual number of bytes sent, or %NULL
 * @timeout: timeout timeout (in milliseconds) that this function should wait
 * before giving up due to no response being received. For an unlimited
 * timeout, use 0.
 * @cancellable: a #GCancellable, or %NULL
 * @error: a #GError, or %NULL
 *
 * Perform a USB control transfer.
 *
 * Warning: this function is synchronous, and cannot be cancelled.
 *
 * Return value: %TRUE on success
 *
 * Since: 2.0.0
 **/
gboolean
fu_usb_device_control_transfer(FuUsbDevice *self,
			       FuUsbDirection direction,
			       FuUsbRequestType request_type,
			       FuUsbRecipient recipient,
			       guint8 request,
			       guint16 value,
			       guint16 idx,
			       guint8 *data,
			       gsize length,
			       gsize *actual_length,
			       guint timeout,
			       GCancellable *cancellable,
			       GError **error)
{
	FuUsbDevicePrivate *priv = GET_PRIVATE(self);
	gint rc;
	guint8 request_type_raw = 0;
	FuDeviceEvent *event = NULL;
	g_autofree gchar *event_id = NULL;

	g_return_val_if_fail(FU_IS_USB_DEVICE(self), FALSE);
	g_return_val_if_fail(error == NULL || *error == NULL, FALSE);

	/* build event key either for load or save */
	if (fu_device_has_flag(FU_DEVICE(self), FWUPD_DEVICE_FLAG_EMULATED) ||
	    fu_context_has_flag(fu_device_get_context(FU_DEVICE(self)),
				FU_CONTEXT_FLAG_SAVE_EVENTS)) {
		g_autofree gchar *data_base64 = g_base64_encode(data, length);
		event_id = g_strdup_printf("ControlTransfer:"
					   "Direction=0x%02x,"
					   "RequestType=0x%02x,"
					   "Recipient=0x%02x,"
					   "Request=0x%02x,"
					   "Value=0x%04x,"
					   "Idx=0x%04x,"
					   "Data=%s,"
					   "Length=0x%x",
					   direction,
					   request_type,
					   recipient,
					   request,
					   value,
					   idx,
					   data_base64,
					   (guint)length);
	}

	/* emulated */
	if (fu_device_has_flag(FU_DEVICE(self), FWUPD_DEVICE_FLAG_EMULATED)) {
		gint64 rc_tmp;

		event = fu_device_load_event(FU_DEVICE(self), event_id, error);
		if (event == NULL)
			return FALSE;
		rc_tmp = fu_device_event_get_i64(event, "Error", NULL);
		if (rc_tmp != G_MAXINT64)
			return fu_usb_device_libusb_error_to_gerror(rc_tmp, error);
		rc_tmp = fu_device_event_get_i64(event, "Status", NULL);
		if (rc_tmp != G_MAXINT64)
			return fu_usb_device_libusb_status_to_gerror(rc_tmp, error);
		return fu_device_event_copy_data(event, "Data", data, length, actual_length, error);
	}

	/* for fuzzing */
	if (fu_device_has_private_flag(FU_DEVICE(self), FU_DEVICE_PRIVATE_FLAG_IS_FAKE)) {
		memset(data, 0x0, length);
		if (actual_length != NULL)
			*actual_length = length;
		return TRUE;
	}

	/* sanity check */
	if (priv->handle == NULL)
		return fu_usb_device_not_open_error(self, error);

	/* save */
	if (fu_context_has_flag(fu_device_get_context(FU_DEVICE(self)),
				FU_CONTEXT_FLAG_SAVE_EVENTS)) {
		event = fu_device_save_event(FU_DEVICE(self), event_id);
	}

	/* munge back to flags */
	if (direction == FU_USB_DIRECTION_DEVICE_TO_HOST)
		request_type_raw |= 0x80;
	request_type_raw |= (request_type << 5);
	request_type_raw |= recipient;

	/* sync request */
	rc = libusb_control_transfer(priv->handle,
				     request_type_raw,
				     request,
				     value,
				     idx,
				     data,
				     length,
				     timeout);
	if (rc < 0) {
		if (!fu_usb_device_libusb_error_to_gerror(rc, error)) {
			if (event != NULL)
				fu_device_event_set_i64(event, "Error", rc);
			return FALSE;
		}
	}
	if (actual_length != NULL)
		*actual_length = rc;

	/* save */
	if (event != NULL)
		fu_device_event_set_data(event, "Data", data, rc);

	/* success */
	return TRUE;
}

/**
 * fu_usb_device_bulk_transfer:
 * @self: a #FuUsbDevice
 * @endpoint: the address of a valid endpoint to communicate with
 * @data: (array length=length): a suitably-sized data buffer for
 * either input or output
 * @length: the length field for the setup packet.
 * @actual_length: (out) (optional): the actual number of bytes sent, or %NULL
 * @timeout: timeout timeout (in milliseconds) that this function should wait
 * before giving up due to no response being received. For an unlimited
 * timeout, use 0.
 * @cancellable: a #GCancellable, or %NULL
 * @error: a #GError, or %NULL
 *
 * Perform a USB bulk transfer.
 *
 * Warning: this function is synchronous, and cannot be cancelled.
 *
 * Return value: %TRUE on success
 *
 * Since: 2.0.0
 **/
gboolean
fu_usb_device_bulk_transfer(FuUsbDevice *self,
			    guint8 endpoint,
			    guint8 *data,
			    gsize length,
			    gsize *actual_length,
			    guint timeout,
			    GCancellable *cancellable,
			    GError **error)
{
	FuUsbDevicePrivate *priv = GET_PRIVATE(self);
	gint rc;
	gint transferred = 0;
	FuDeviceEvent *event = NULL;
	g_autofree gchar *event_id = NULL;

	g_return_val_if_fail(FU_IS_USB_DEVICE(self), FALSE);
	g_return_val_if_fail(error == NULL || *error == NULL, FALSE);

	/* build event key either for load or save */
	if (fu_device_has_flag(FU_DEVICE(self), FWUPD_DEVICE_FLAG_EMULATED) ||
	    fu_context_has_flag(fu_device_get_context(FU_DEVICE(self)),
				FU_CONTEXT_FLAG_SAVE_EVENTS)) {
		g_autofree gchar *data_base64 = g_base64_encode(data, length);
		event_id = g_strdup_printf("BulkTransfer:"
					   "Endpoint=0x%02x,"
					   "Data=%s,"
					   "Length=0x%x",
					   endpoint,
					   data_base64,
					   (guint)length);
	}

	/* emulated */
	if (fu_device_has_flag(FU_DEVICE(self), FWUPD_DEVICE_FLAG_EMULATED)) {
		gint64 rc_tmp;

		event = fu_device_load_event(FU_DEVICE(self), event_id, error);
		if (event == NULL)
			return FALSE;
		rc_tmp = fu_device_event_get_i64(event, "Error", NULL);
		if (rc_tmp != G_MAXINT64)
			return fu_usb_device_libusb_error_to_gerror(rc_tmp, error);
		rc_tmp = fu_device_event_get_i64(event, "Status", NULL);
		if (rc_tmp != G_MAXINT64)
			return fu_usb_device_libusb_status_to_gerror(rc_tmp, error);
		return fu_device_event_copy_data(event, "Data", data, length, actual_length, error);
	}

	/* for fuzzing */
	if (fu_device_has_private_flag(FU_DEVICE(self), FU_DEVICE_PRIVATE_FLAG_IS_FAKE)) {
		memset(data, 0x0, length);
		if (actual_length != NULL)
			*actual_length = length;
		return TRUE;
	}

	/* sanity check */
	if (priv->handle == NULL)
		return fu_usb_device_not_open_error(self, error);

	/* save */
	if (fu_context_has_flag(fu_device_get_context(FU_DEVICE(self)),
				FU_CONTEXT_FLAG_SAVE_EVENTS)) {
		event = fu_device_save_event(FU_DEVICE(self), event_id);
	}

	/* sync request */
	rc = libusb_bulk_transfer(priv->handle, endpoint, data, length, &transferred, timeout);
	if (!fu_usb_device_libusb_error_to_gerror(rc, error)) {
		if (event != NULL)
			fu_device_event_set_i64(event, "Error", rc);
		return FALSE;
	}
	if (actual_length != NULL)
		*actual_length = transferred;

	/* save */
	if (event != NULL)
		fu_device_event_set_data(event, "Data", data, transferred);

	/* success */
	return TRUE;
}

/**
 * fu_usb_device_interrupt_transfer:
 * @self: a #FuUsbDevice
 * @endpoint: the address of a valid endpoint to communicate with
 * @data: (array length=length): a suitably-sized data buffer for either input or output
 * @length: the length field for the setup packet.
 * @actual_length: (out) (optional): the actual number of bytes sent, or %NULL
 * @timeout: timeout (in milliseconds) that this function should wait -- use 0 for unlimited
 * @cancellable: a #GCancellable, or %NULL
 * @error: a #GError, or %NULL
 *
 * Perform a USB interrupt transfer.
 *
 * Warning: this function is synchronous, and cannot be cancelled.
 *
 * Return value: %TRUE on success
 *
 * Since: 2.0.0
 **/
gboolean
fu_usb_device_interrupt_transfer(FuUsbDevice *self,
				 guint8 endpoint,
				 guint8 *data,
				 gsize length,
				 gsize *actual_length,
				 guint timeout,
				 GCancellable *cancellable,
				 GError **error)
{
	FuUsbDevicePrivate *priv = GET_PRIVATE(self);
	gint rc;
	gint transferred = 0;
	FuDeviceEvent *event = NULL;
	g_autofree gchar *event_id = NULL;

	g_return_val_if_fail(FU_IS_USB_DEVICE(self), FALSE);
	g_return_val_if_fail(error == NULL || *error == NULL, FALSE);

	/* build event key either for load or save */
	if (fu_device_has_flag(FU_DEVICE(self), FWUPD_DEVICE_FLAG_EMULATED) ||
	    fu_context_has_flag(fu_device_get_context(FU_DEVICE(self)),
				FU_CONTEXT_FLAG_SAVE_EVENTS)) {
		g_autofree gchar *data_base64 = g_base64_encode(data, length);
		event_id = g_strdup_printf("InterruptTransfer:"
					   "Endpoint=0x%02x,"
					   "Data=%s,"
					   "Length=0x%x",
					   endpoint,
					   data_base64,
					   (guint)length);
	}

	/* emulated */
	if (fu_device_has_flag(FU_DEVICE(self), FWUPD_DEVICE_FLAG_EMULATED)) {
		gint64 rc_tmp;

		event = fu_device_load_event(FU_DEVICE(self), event_id, error);
		if (event == NULL)
			return FALSE;
		rc_tmp = fu_device_event_get_i64(event, "Error", NULL);
		if (rc_tmp != G_MAXINT64)
			return fu_usb_device_libusb_error_to_gerror(rc_tmp, error);
		rc_tmp = fu_device_event_get_i64(event, "Status", NULL);
		if (rc_tmp != G_MAXINT64)
			return fu_usb_device_libusb_status_to_gerror(rc_tmp, error);
		return fu_device_event_copy_data(event, "Data", data, length, actual_length, error);
	}

	/* for fuzzing */
	if (fu_device_has_private_flag(FU_DEVICE(self), FU_DEVICE_PRIVATE_FLAG_IS_FAKE)) {
		memset(data, 0x0, length);
		if (actual_length != NULL)
			*actual_length = length;
		return TRUE;
	}

	/* sanity check */
	if (priv->handle == NULL)
		return fu_usb_device_not_open_error(self, error);

	/* save */
	if (fu_context_has_flag(fu_device_get_context(FU_DEVICE(self)),
				FU_CONTEXT_FLAG_SAVE_EVENTS)) {
		event = fu_device_save_event(FU_DEVICE(self), event_id);
	}

	/* sync request */
	rc = libusb_interrupt_transfer(priv->handle, endpoint, data, length, &transferred, timeout);
	if (!fu_usb_device_libusb_error_to_gerror(rc, error)) {
		if (event != NULL)
			fu_device_event_set_i64(event, "Error", rc);
		return FALSE;
	}
	if (actual_length != NULL)
		*actual_length = transferred;

	/* save */
	if (event != NULL)
		fu_device_event_set_data(event, "Data", data, transferred);

	/* success */
	return TRUE;
}

/**
 * fu_usb_device_reset:
 * @self: a #FuUsbDevice
 * @error: a #GError, or %NULL
 *
 * Perform a USB port reset to reinitialize a device.
 *
 * If the reset succeeds, the device will appear to disconnected and reconnected.
 * This means the @self will no longer be valid and should be closed and
 * rediscovered.
 *
 * This is a blocking function which usually incurs a noticeable delay.
 *
 * Return value: %TRUE on success
 *
 * Since: 2.0.0
 **/
gboolean
fu_usb_device_reset(FuUsbDevice *self, GError **error)
{
	FuUsbDevicePrivate *priv = GET_PRIVATE(self);
	gint rc;

	g_return_val_if_fail(FU_IS_USB_DEVICE(self), FALSE);
	g_return_val_if_fail(error == NULL || *error == NULL, FALSE);

	/* emulating? */
	if (fu_device_has_flag(FU_DEVICE(self), FWUPD_DEVICE_FLAG_EMULATED))
		return TRUE;
	if (priv->handle == NULL)
		return fu_usb_device_not_open_error(self, error);

	rc = libusb_reset_device(priv->handle);
	if (rc == LIBUSB_ERROR_NOT_FOUND)
		return TRUE;
	return fu_usb_device_libusb_error_to_gerror(rc, error);
}

static gboolean
fu_usb_device_parse_descriptor(FuUsbDevice *self, GBytes *blob, GError **error)
{
	FuUsbDevicePrivate *priv = GET_PRIVATE(self);
	gsize offset = 0;
	g_autoptr(FuUsbDeviceHdr) st = NULL;
	g_autoptr(FuUsbInterface) iface_last = NULL;

	st = fu_usb_device_hdr_parse_bytes(blob, offset, error);
	if (st == NULL)
		return FALSE;
	priv->desc.bLength = fu_usb_device_hdr_get_length(st);
	priv->desc.bDescriptorType = FU_USB_DEVICE_HDR_DEFAULT_DESCRIPTOR_TYPE;
	priv->desc.bcdUSB = fu_usb_device_hdr_get_usb(st);
	priv->desc.bDeviceClass = fu_usb_device_hdr_get_device_class(st);
	priv->desc.bDeviceSubClass = fu_usb_device_hdr_get_device_sub_class(st);
	priv->desc.bDeviceProtocol = fu_usb_device_hdr_get_device_protocol(st);
	priv->desc.bMaxPacketSize0 = fu_usb_device_hdr_get_max_packet_size0(st);
	fu_device_set_vid(FU_DEVICE(self), fu_usb_device_hdr_get_vendor(st));
	fu_device_set_pid(FU_DEVICE(self), fu_usb_device_hdr_get_product(st));
	priv->desc.bcdDevice = fu_usb_device_hdr_get_device(st);
	priv->desc.iManufacturer = fu_usb_device_hdr_get_manufacturer_idx(st);
	priv->desc.iProduct = fu_usb_device_hdr_get_product_idx(st);
	priv->desc.iSerialNumber = fu_usb_device_hdr_get_serial_number_idx(st);
	priv->desc.bNumConfigurations = fu_usb_device_hdr_get_num_configurations(st);

	offset += fu_usb_device_hdr_get_length(st);
	while (offset < g_bytes_get_size(blob)) {
		FuUsbDescriptorKind descriptor_kind;
		g_autoptr(FuUsbBaseHdr) st_base = NULL;
		g_autoptr(GError) error_local = NULL;

		/* this is common to all descriptor types */
		st_base = fu_usb_base_hdr_parse_bytes(blob, offset, &error_local);
		if (st_base == NULL) {
			if (g_error_matches(error_local, FWUPD_ERROR, FWUPD_ERROR_INVALID_FILE))
				break;
			if (g_error_matches(error_local, FWUPD_ERROR, FWUPD_ERROR_INVALID_DATA))
				break;
			g_propagate_error(error, g_steal_pointer(&error_local));
			return FALSE;
		}

		/* sanity check */
		if (fu_usb_base_hdr_get_length(st_base) == 0) {
			g_set_error_literal(error,
					    FWUPD_ERROR,
					    FWUPD_ERROR_INVALID_DATA,
					    "USB descriptor had impossible zero size");
			return FALSE;
		}

		/* config, interface or endpoint */
		descriptor_kind = fu_usb_base_hdr_get_descriptor_type(st_base);
		if (descriptor_kind == FU_USB_DESCRIPTOR_KIND_CONFIG) {
			g_autoptr(FuUsbConfigDescriptor) cfg_descriptor =
			    fu_usb_config_descriptor_new();
			if (!fu_firmware_parse_bytes(FU_FIRMWARE(cfg_descriptor),
						     blob,
						     offset,
						     FU_FIRMWARE_PARSE_FLAG_NONE,
						     error))
				return FALSE;
			g_ptr_array_add(priv->cfg_descriptors, g_steal_pointer(&cfg_descriptor));
		} else if (descriptor_kind == FU_USB_DESCRIPTOR_KIND_INTERFACE) {
			g_autoptr(FuUsbInterface) iface = g_object_new(FU_TYPE_USB_INTERFACE, NULL);
			if (!fu_firmware_parse_bytes(FU_FIRMWARE(iface),
						     blob,
						     offset,
						     FU_FIRMWARE_PARSE_FLAG_NONE,
						     error))
				return FALSE;
			fu_usb_device_add_interface_internal(self, iface);

			/* the next descriptor is the custom one, so just add as a child */
			if (fu_usb_interface_get_class(iface) ==
			    FU_USB_CLASS_APPLICATION_SPECIFIC) {
				g_autoptr(FuUsbDescriptor) img =
				    g_object_new(FU_TYPE_USB_DESCRIPTOR, NULL);
				if (!fu_firmware_parse_bytes(
					FU_FIRMWARE(img),
					blob,
					offset + fu_usb_base_hdr_get_length(st_base),
					FU_FIRMWARE_PARSE_FLAG_CACHE_BLOB,
					error))
					return FALSE;
				if (!fu_firmware_add_image(FU_FIRMWARE(iface),
							   FU_FIRMWARE(img),
							   error))
					return FALSE;
				offset += fu_firmware_get_size(FU_FIRMWARE(img));
			}

			g_set_object(&iface_last, iface);
		} else if (descriptor_kind == FU_USB_DESCRIPTOR_KIND_ENDPOINT) {
			g_autoptr(FuUsbEndpoint) ep = g_object_new(FU_TYPE_USB_ENDPOINT, NULL);
			if (!fu_firmware_parse_bytes(FU_FIRMWARE(ep),
						     blob,
						     offset,
						     FU_FIRMWARE_PARSE_FLAG_NONE,
						     error))
				return FALSE;
			if (iface_last == NULL) {
				g_debug("endpoint 0x%x without prior interface, ignoring",
					fu_usb_endpoint_get_number(ep));
			} else {
				fu_usb_interface_add_endpoint(iface_last, ep);
			}
		} else if (descriptor_kind == FU_USB_DESCRIPTOR_KIND_HID) {
			g_autoptr(FuUsbHidDescriptor) hid_descriptor =
			    g_object_new(FU_TYPE_USB_HID_DESCRIPTOR, NULL);
			if (!fu_firmware_parse_bytes(FU_FIRMWARE(hid_descriptor),
						     blob,
						     offset,
						     FU_FIRMWARE_PARSE_FLAG_NONE,
						     error))
				return FALSE;
			if (iface_last == NULL) {
				g_debug("hid descriptor without prior interface, ignoring");
			} else {
				fu_usb_hid_descriptor_set_iface_number(
				    hid_descriptor,
				    fu_usb_interface_get_number(iface_last));
				g_ptr_array_add(priv->hid_descriptors,
						g_steal_pointer(&hid_descriptor));
			}
		} else {
			const gchar *str = fu_usb_descriptor_kind_to_string(descriptor_kind);
			g_debug("usb descriptor type 0x%x [%s] not processed",
				descriptor_kind,
				str != NULL ? str : "unknown");
		}
		offset += fu_usb_base_hdr_get_length(st_base);
	}

	/* success */
	return TRUE;
}

static gboolean
fu_usb_device_ensure_interfaces(FuUsbDevice *self, GError **error)
{
	FuUsbDevicePrivate *priv = GET_PRIVATE(self);
	gint rc;

	/* sanity check */
	if (priv->interfaces_valid)
		return TRUE;

	/* libusb or kernel */
	if (priv->usb_device != NULL) {
		struct libusb_config_descriptor *config;
		rc = libusb_get_active_config_descriptor(priv->usb_device, &config);
		if (!fu_usb_device_libusb_error_to_gerror(rc, error))
			return FALSE;
		for (guint i = 0; i < config->bNumInterfaces; i++) {
			for (guint j = 0; j < (guint)config->interface[i].num_altsetting; j++) {
				const struct libusb_interface_descriptor *ifp =
				    &config->interface[i].altsetting[j];
				g_autoptr(FuUsbInterface) iface = fu_usb_interface_new(ifp, error);
				if (iface == NULL)
					return FALSE;
				fu_usb_device_add_interface_internal(self, iface);
			}
		}
		libusb_free_config_descriptor(config);
	} else {
		g_autoptr(GError) error_local = NULL;
		g_autoptr(GBytes) blob = NULL;

		blob = fu_usb_device_load_descriptor(self, "descriptors", &error_local);
		if (blob == NULL) {
			if (!g_error_matches(error_local, FWUPD_ERROR, FWUPD_ERROR_NOT_FOUND)) {
				g_propagate_error(error, g_steal_pointer(&error_local));
				return FALSE;
			}
		} else {
			if (!fu_usb_device_parse_descriptor(self, blob, error))
				return FALSE;
		}
	}

	priv->interfaces_valid = TRUE;
	return TRUE;
}

/**
 * fu_usb_device_get_interfaces:
 * @self: a #FuUsbDevice
 * @error: a #GError, or %NULL
 *
 * Gets all the interfaces exported by the device.
 *
 * Return value: (transfer container) (element-type FuUsbInterface): an array of interfaces or %NULL
 *
 * Since: 2.0.0
 **/
GPtrArray *
fu_usb_device_get_interfaces(FuUsbDevice *self, GError **error)
{
	FuUsbDevicePrivate *priv = GET_PRIVATE(self);

	g_return_val_if_fail(FU_IS_USB_DEVICE(self), NULL);
	g_return_val_if_fail(error == NULL || *error == NULL, NULL);

	if (!fu_usb_device_ensure_interfaces(self, error))
		return NULL;
	return g_ptr_array_ref(priv->interfaces);
}

/**
 * fu_usb_device_get_interface:
 * @self: a #FuUsbDevice
 * @class_id: a device class, e.g. 0xff for VENDOR
 * @subclass_id: a device subclass
 * @protocol_id: a protocol number
 * @error: a #GError, or %NULL
 *
 * Gets the first interface that matches the vendor class interface descriptor.
 * If you want to find all the interfaces that match (there may be other
 * 'alternate' interfaces you have to use fu_usb_device_get_interfaces() and
 * check each one manually.
 *
 * Return value: (transfer full): a #FuUsbInterface or %NULL for not found
 *
 * Since: 0.2.8
 **/
FuUsbInterface *
fu_usb_device_get_interface(FuUsbDevice *self,
			    guint8 class_id,
			    guint8 subclass_id,
			    guint8 protocol_id,
			    GError **error)
{
	FuUsbDevicePrivate *priv = GET_PRIVATE(self);

	g_return_val_if_fail(FU_IS_USB_DEVICE(self), NULL);
	g_return_val_if_fail(error == NULL || *error == NULL, NULL);

	/* find the right data */
	if (!fu_usb_device_ensure_interfaces(self, error))
		return NULL;
	for (guint i = 0; i < priv->interfaces->len; i++) {
		FuUsbInterface *iface = g_ptr_array_index(priv->interfaces, i);
		if (fu_usb_interface_get_class(iface) != class_id)
			continue;
		if (fu_usb_interface_get_subclass(iface) != subclass_id)
			continue;
		if (fu_usb_interface_get_protocol(iface) != protocol_id)
			continue;
		return g_object_ref(iface);
	}

	/* nothing matched */
	g_set_error(error,
		    FWUPD_ERROR,
		    FWUPD_ERROR_NOT_SUPPORTED,
		    "no interface for class 0x%02x, "
		    "subclass 0x%02x and protocol 0x%02x",
		    class_id,
		    subclass_id,
		    protocol_id);
	return NULL;
}

/**
 * fu_usb_device_get_string_descriptor:
 * @desc_index: the index for the string descriptor to retrieve
 * @error: a #GError, or %NULL
 *
 * Get a string descriptor from the device. The returned string should be freed
 * with g_free() when no longer needed.
 *
 * Return value: a newly-allocated string holding the descriptor, or NULL on error.
 *
 * Since: 2.0.0
 **/
gchar *
fu_usb_device_get_string_descriptor(FuUsbDevice *self, guint8 desc_index, GError **error)
{
	FuUsbDevicePrivate *priv = GET_PRIVATE(self);
	FuDeviceEvent *event;
	gint rc;
	unsigned char buf[128] = {0};
	g_autofree gchar *event_id = NULL;

	g_return_val_if_fail(FU_IS_USB_DEVICE(self), NULL);
	g_return_val_if_fail(error == NULL || *error == NULL, NULL);

	/* build event key either for load or save */
	if (fu_device_has_flag(FU_DEVICE(self), FWUPD_DEVICE_FLAG_EMULATED) ||
	    fu_context_has_flag(fu_device_get_context(FU_DEVICE(self)),
				FU_CONTEXT_FLAG_SAVE_EVENTS)) {
		event_id = g_strdup_printf("GetStringDescriptor:DescIndex=0x%02x", desc_index);
	}

	/* emulated */
	if (fu_device_has_flag(FU_DEVICE(self), FWUPD_DEVICE_FLAG_EMULATED)) {
		gint64 rc_tmp;
		g_autoptr(GBytes) bytes = NULL;

		event = fu_device_load_event(FU_DEVICE(self), event_id, error);
		if (event == NULL)
			return NULL;
		rc_tmp = fu_device_event_get_i64(event, "Error", NULL);
		if (rc_tmp != G_MAXINT64) {
			fu_usb_device_libusb_error_to_gerror(rc_tmp, error);
			return NULL;
		}
		rc_tmp = fu_device_event_get_i64(event, "Status", NULL);
		if (rc_tmp != G_MAXINT64) {
			fu_usb_device_libusb_status_to_gerror(rc_tmp, error);
			return NULL;
		}
		bytes = fu_device_event_get_bytes(event, "Data", error);
		if (bytes == NULL)
			return NULL;
		return g_strndup(g_bytes_get_data(bytes, NULL), g_bytes_get_size(bytes));
	}
	if (priv->handle == NULL) {
		fu_usb_device_not_open_error(self, error);
		return NULL;
	}

	rc = libusb_get_string_descriptor_ascii(priv->handle, desc_index, buf, sizeof(buf));
	if (rc < 0) {
		fu_usb_device_libusb_error_to_gerror(rc, error);
		return NULL;
	}

	/* save */
	if (fu_context_has_flag(fu_device_get_context(FU_DEVICE(self)),
				FU_CONTEXT_FLAG_SAVE_EVENTS)) {
		event = fu_device_save_event(FU_DEVICE(self), event_id);
		fu_device_event_set_data(event, "Data", buf, sizeof(buf));
	}

	return g_strndup((const gchar *)buf, sizeof(buf));
}

/**
 * fu_usb_device_get_string_descriptor_bytes:
 * @desc_index: the index for the string descriptor to retrieve
 * @langid: the language ID
 * @error: a #GError, or %NULL
 *
 * Get a raw string descriptor from the device. The returned string should be freed
 * with g_bytes_unref() when no longer needed.
 * The descriptor will be at most 128 btes in length, if you need to
 * issue a request with either a smaller or larger descriptor, you can
 * use fu_usb_device_get_string_descriptor_bytes_full instead.
 *
 * Return value: (transfer full): a possibly UTF-16 string, or NULL on error.
 *
 * Since: 2.0.0
 **/
GBytes *
fu_usb_device_get_string_descriptor_bytes(FuUsbDevice *self,
					  guint8 desc_index,
					  guint16 langid,
					  GError **error)
{
	g_return_val_if_fail(FU_IS_USB_DEVICE(self), NULL);
	g_return_val_if_fail(error == NULL || *error == NULL, NULL);
	return fu_usb_device_get_string_descriptor_bytes_full(self, desc_index, langid, 128, error);
}

/**
 * fu_usb_device_get_string_descriptor_bytes_full:
 * @desc_index: the index for the string descriptor to retrieve
 * @langid: the language ID
 * @length: size of the request data buffer
 * @error: a #GError, or %NULL
 *
 * Get a raw string descriptor from the device. The returned string should be freed
 * with g_bytes_unref() when no longer needed.
 *
 * Return value: (transfer full): a possibly UTF-16 string, or NULL on error.
 *
 * Since: 2.0.0
 **/
GBytes *
fu_usb_device_get_string_descriptor_bytes_full(FuUsbDevice *self,
					       guint8 desc_index,
					       guint16 langid,
					       gsize length,
					       GError **error)
{
	FuUsbDevicePrivate *priv = GET_PRIVATE(self);
	FuDeviceEvent *event;
	gint rc;
	g_autofree gchar *event_id = NULL;
	g_autofree guint8 *buf = g_malloc0(length);

	g_return_val_if_fail(FU_IS_USB_DEVICE(self), NULL);
	g_return_val_if_fail(error == NULL || *error == NULL, NULL);

	/* emulating? */
	/* build event key either for load or save */
	if (fu_device_has_flag(FU_DEVICE(self), FWUPD_DEVICE_FLAG_EMULATED) ||
	    fu_context_has_flag(fu_device_get_context(FU_DEVICE(self)),
				FU_CONTEXT_FLAG_SAVE_EVENTS)) {
		event_id = g_strdup_printf(
		    "GetStringDescriptorBytes:DescIndex=0x%02x,Langid=0x%04x,Length=0x%x",
		    desc_index,
		    langid,
		    (guint)length);
	}

	/* emulated */
	if (fu_device_has_flag(FU_DEVICE(self), FWUPD_DEVICE_FLAG_EMULATED)) {
		gint64 rc_tmp;
		g_autoptr(GBytes) bytes = NULL;

		event = fu_device_load_event(FU_DEVICE(self), event_id, error);
		if (event == NULL)
			return NULL;
		rc_tmp = fu_device_event_get_i64(event, "Error", NULL);
		if (rc_tmp != G_MAXINT64) {
			fu_usb_device_libusb_error_to_gerror(rc_tmp, error);
			return NULL;
		}
		rc_tmp = fu_device_event_get_i64(event, "Status", NULL);
		if (rc_tmp != G_MAXINT64) {
			fu_usb_device_libusb_status_to_gerror(rc_tmp, error);
			return NULL;
		}
		bytes = fu_device_event_get_bytes(event, "Data", error);
		if (bytes == NULL)
			return NULL;
		return g_steal_pointer(&bytes);
	}

	if (priv->handle == NULL) {
		fu_usb_device_not_open_error(self, error);
		return NULL;
	}
	rc = libusb_get_string_descriptor(priv->handle, desc_index, langid, buf, length);
	if (rc < 0) {
		fu_usb_device_libusb_error_to_gerror(rc, error);
		return NULL;
	}

	/* save */
	if (fu_context_has_flag(fu_device_get_context(FU_DEVICE(self)),
				FU_CONTEXT_FLAG_SAVE_EVENTS)) {
		event = fu_device_save_event(FU_DEVICE(self), event_id);
		fu_device_event_set_data(event, "Data", buf, rc);
	}

	/* success */
	return g_bytes_new(buf, rc);
}

static gboolean
fu_usb_device_claim_interface_internal(FuUsbDevice *self,
				       guint8 iface,
				       FuUsbDeviceClaimFlags flags,
				       GError **error)
{
	FuUsbDevicePrivate *priv = GET_PRIVATE(self);
	gint rc;

	if (flags & FU_USB_DEVICE_CLAIM_FLAG_KERNEL_DRIVER) {
		rc = libusb_detach_kernel_driver(priv->handle, iface);
		if (rc != LIBUSB_SUCCESS && rc != LIBUSB_ERROR_NOT_FOUND && /* no driver attached */
		    rc != LIBUSB_ERROR_NOT_SUPPORTED &&			    /* win32 */
		    rc != LIBUSB_ERROR_BUSY /* driver rebound already */)
			return fu_usb_device_libusb_error_to_gerror(rc, error);
	}

	rc = libusb_claim_interface(priv->handle, iface);
	return fu_usb_device_libusb_error_to_gerror(rc, error);
}

typedef struct {
	guint8 iface;
	FuUsbDeviceClaimFlags flags;
} FuUsbDeviceClaimHelper;

static gboolean
fu_usb_device_claim_interface_cb(FuDevice *device, gpointer user_data, GError **error)
{
	FuUsbDevice *self = FU_USB_DEVICE(device);
	FuUsbDeviceClaimHelper *helper = (FuUsbDeviceClaimHelper *)user_data;
	return fu_usb_device_claim_interface_internal(self, helper->iface, helper->flags, error);
}

/**
 * fu_usb_device_claim_interface:
 * @self: a #FuUsbDevice
 * @iface: bInterfaceNumber of the interface you wish to claim
 * @flags: #FuUsbDeviceClaimFlags
 * @error: a #GError, or %NULL
 *
 * Claim an interface of the device.
 *
 * Return value: %TRUE on success
 *
 * Since: 2.0.0
 **/
gboolean
fu_usb_device_claim_interface(FuUsbDevice *self,
			      guint8 iface,
			      FuUsbDeviceClaimFlags flags,
			      GError **error)
{
	FuUsbDevicePrivate *priv = GET_PRIVATE(self);

	g_return_val_if_fail(FU_IS_USB_DEVICE(self), FALSE);
	g_return_val_if_fail(error == NULL || *error == NULL, FALSE);

	/* emulating? */
	if (fu_device_has_flag(FU_DEVICE(self), FWUPD_DEVICE_FLAG_EMULATED))
		return TRUE;

	if (priv->handle == NULL)
		return fu_usb_device_not_open_error(self, error);

	if (priv->claim_retry_count > 0) {
		FuUsbDeviceClaimHelper helper = {.iface = iface, .flags = flags};
		return fu_device_retry_full(FU_DEVICE(self),
					    fu_usb_device_claim_interface_cb,
					    priv->claim_retry_count,
					    FU_DEVICE_CLAIM_INTERFACE_DELAY,
					    &helper,
					    error);
	}
	return fu_usb_device_claim_interface_internal(self, iface, flags, error);
}

/**
 * fu_usb_device_release_interface:
 * @self: a #FuUsbDevice
 * @iface: bInterfaceNumber of the interface you wish to release
 * @flags: #FuUsbDeviceClaimFlags
 * @error: a #GError, or %NULL
 *
 * Release an interface of the device.
 *
 * Return value: %TRUE on success
 *
 * Since: 2.0.0
 **/
gboolean
fu_usb_device_release_interface(FuUsbDevice *self,
				guint8 iface,
				FuUsbDeviceClaimFlags flags,
				GError **error)
{
	FuUsbDevicePrivate *priv = GET_PRIVATE(self);
	gint rc;

	g_return_val_if_fail(FU_IS_USB_DEVICE(self), FALSE);
	g_return_val_if_fail(error == NULL || *error == NULL, FALSE);

	/* emulating? */
	if (fu_device_has_flag(FU_DEVICE(self), FWUPD_DEVICE_FLAG_EMULATED))
		return TRUE;

	if (priv->handle == NULL)
		return fu_usb_device_not_open_error(self, error);

	rc = libusb_release_interface(priv->handle, iface);
	if (rc != LIBUSB_SUCCESS)
		return fu_usb_device_libusb_error_to_gerror(rc, error);

	if (flags & FU_USB_DEVICE_CLAIM_FLAG_KERNEL_DRIVER) {
		rc = libusb_attach_kernel_driver(priv->handle, iface);
		if (rc != LIBUSB_SUCCESS && rc != LIBUSB_ERROR_NOT_FOUND && /* no driver attached */
		    rc != LIBUSB_ERROR_NOT_SUPPORTED &&			    /* win32 */
		    rc != LIBUSB_ERROR_BUSY /* driver rebound already */)
			return fu_usb_device_libusb_error_to_gerror(rc, error);
	}

	return TRUE;
}

static FuUsbConfigDescriptor *
fu_usb_device_get_config_descriptor_for_value(FuUsbDevice *self,
					      guint8 configuration_value,
					      GError **error)
{
	FuUsbDevicePrivate *priv = GET_PRIVATE(self);

	if (!fu_usb_device_ensure_interfaces(self, error))
		return NULL;
	for (guint i = 0; i < priv->cfg_descriptors->len; i++) {
		FuUsbConfigDescriptor *cfg_descriptor = g_ptr_array_index(priv->cfg_descriptors, i);
		if (fu_usb_config_descriptor_get_configuration_value(cfg_descriptor) ==
		    configuration_value)
			return cfg_descriptor;
	}
	g_set_error(error,
		    FWUPD_ERROR,
		    FWUPD_ERROR_INVALID_DATA,
		    "no configuration for value 0x%x",
		    configuration_value);
	return NULL;
}

/**
 * fu_usb_device_get_configuration_index
 * @self: a #FuUsbDevice
 * @error: a #GError, or %NULL
 *
 * Get the index for the active Configuration string descriptor
 * ie, iConfiguration.
 *
 * Return value: a string descriptor index, or 0x0 on error
 *
 * Since: 2.0.0
 **/
guint8
fu_usb_device_get_configuration_index(FuUsbDevice *self, GError **error)
{
	FuUsbDevicePrivate *priv = GET_PRIVATE(self);
	FuDeviceEvent *event = NULL;
	guint8 index;
	g_autofree gchar *event_id = NULL;

	g_return_val_if_fail(FU_IS_USB_DEVICE(self), 0x0);

	/* build event key either for load or save */
	if (fu_device_has_flag(FU_DEVICE(self), FWUPD_DEVICE_FLAG_EMULATED) ||
	    fu_context_has_flag(fu_device_get_context(FU_DEVICE(self)),
				FU_CONTEXT_FLAG_SAVE_EVENTS)) {
		event_id = g_strdup_printf("GetConfigurationIndex");
	}

	/* emulated */
	if (fu_device_has_flag(FU_DEVICE(self), FWUPD_DEVICE_FLAG_EMULATED)) {
		g_autoptr(GBytes) bytes = NULL;
		event = fu_device_load_event(FU_DEVICE(self), event_id, error);
		if (event == NULL)
			return 0x0;
		bytes = fu_device_event_get_bytes(event, "Data", error);
		if (bytes == NULL)
			return 0x0;
		if (g_bytes_get_size(bytes) != 1) {
			g_set_error(error,
				    FWUPD_ERROR,
				    FWUPD_ERROR_INVALID_DATA,
				    "no correct event data for %s",
				    event_id);
			return 0x0;
		}
		return ((const guint8 *)g_bytes_get_data(bytes, NULL))[0];
	}

	/* libusb or kernel */
	if (priv->usb_device != NULL) {
		gint rc;
		struct libusb_config_descriptor *config;
		rc = libusb_get_active_config_descriptor(priv->usb_device, &config);
		if (rc != LIBUSB_SUCCESS)
			return fu_usb_device_libusb_error_to_gerror(rc, error);
		index = config->iConfiguration;
		libusb_free_config_descriptor(config);
	} else {
		FuUsbConfigDescriptor *cfg_descriptor;
		guint64 configuration = 0;
		g_autofree gchar *configuration_str = NULL;

		configuration_str =
		    fu_udev_device_read_sysfs(FU_UDEV_DEVICE(self),
					      "bConfigurationValue",
					      FU_UDEV_DEVICE_ATTR_READ_TIMEOUT_DEFAULT,
					      error);
		if (configuration_str == NULL)
			return 0x0;
		if (!fu_strtoull(configuration_str,
				 &configuration,
				 0,
				 G_MAXUINT8,
				 FU_INTEGER_BASE_10,
				 error))
			return 0x0;

		/* lookup the correct configuration for the configuration_value */
		cfg_descriptor =
		    fu_usb_device_get_config_descriptor_for_value(self, configuration, error);
		if (cfg_descriptor == NULL)
			return 0x0;
		index = fu_usb_config_descriptor_get_configuration(cfg_descriptor);
		if (index == 0) {
			g_set_error(error,
				    FWUPD_ERROR,
				    FWUPD_ERROR_INVALID_DATA,
				    "invalid configuration for value 0x%x",
				    (guint)configuration);
			return 0x0;
		}
	}

	/* save */
	if (fu_context_has_flag(fu_device_get_context(FU_DEVICE(self)),
				FU_CONTEXT_FLAG_SAVE_EVENTS)) {
		event = fu_device_save_event(FU_DEVICE(self), event_id);
		fu_device_event_set_data(event, "Data", &index, sizeof(index));
	}

	return index;
}

/**
 * fu_usb_device_get_serial_number_index:
 * @self: a #FuUsbDevice
 *
 * Gets the index for the Serial Number string descriptor.
 *
 * Return value: a string descriptor index.
 *
 * Since: 2.0.0
 **/
guint8
fu_usb_device_get_serial_number_index(FuUsbDevice *self)
{
	FuUsbDevicePrivate *priv = GET_PRIVATE(self);
	g_return_val_if_fail(FU_IS_USB_DEVICE(self), 0x0);
	return priv->desc.iSerialNumber;
}

/**
 * fu_usb_device_get_custom_index:
 * @self: a #FuUsbDevice
 * @class_id: a device class, e.g. 0xff for VENDOR
 * @subclass_id: a device subclass
 * @protocol_id: a protocol number
 * @error: a #GError, or %NULL
 *
 * Gets the string index from the vendor class interface descriptor.
 *
 * Return value: a non-zero index, or 0x00 for failure
 *
 * Since: 2.0.0
 **/
guint8
fu_usb_device_get_custom_index(FuUsbDevice *self,
			       guint8 class_id,
			       guint8 subclass_id,
			       guint8 protocol_id,
			       GError **error)
{
	FuUsbDevicePrivate *priv = GET_PRIVATE(self);
	FuDeviceEvent *event;
	gint rc;
	guint8 idx = 0x00;
	g_autofree gchar *event_id = NULL;

	g_return_val_if_fail(FU_IS_USB_DEVICE(self), 0x0);
	g_return_val_if_fail(error == NULL || *error == NULL, 0x0);

	/* build event key either for load or save */
	if (fu_device_has_flag(FU_DEVICE(self), FWUPD_DEVICE_FLAG_EMULATED) ||
	    fu_context_has_flag(fu_device_get_context(FU_DEVICE(self)),
				FU_CONTEXT_FLAG_SAVE_EVENTS)) {
		event_id = g_strdup_printf(
		    "GetCustomIndex:ClassId=0x%02x,SubclassId=0x%02x,ProtocolId=0x%02x",
		    class_id,
		    subclass_id,
		    protocol_id);
	}

	/* emulated */
	if (fu_device_has_flag(FU_DEVICE(self), FWUPD_DEVICE_FLAG_EMULATED)) {
		gint64 rc_tmp;
		g_autoptr(GBytes) bytes = NULL;

		event = fu_device_load_event(FU_DEVICE(self), event_id, error);
		if (event == NULL)
			return 0x00;
		rc_tmp = fu_device_event_get_i64(event, "Error", NULL);
		if (rc_tmp != G_MAXINT64)
			return fu_usb_device_libusb_error_to_gerror(rc_tmp, error);
		rc_tmp = fu_device_event_get_i64(event, "Status", NULL);
		if (rc_tmp != G_MAXINT64)
			return fu_usb_device_libusb_status_to_gerror(rc_tmp, error);
		bytes = fu_device_event_get_bytes(event, "Data", error);
		if (bytes == NULL)
			return 0x00;
		if (g_bytes_get_size(bytes) != 1) {
			g_set_error(error,
				    FWUPD_ERROR,
				    FWUPD_ERROR_INVALID_DATA,
				    "no correct event data for %s",
				    event_id);
			return 0x00;
		}
		return ((const guint8 *)g_bytes_get_data(bytes, NULL))[0];
	}

	/* libusb or kernel */
	if (priv->usb_device != NULL) {
		struct libusb_config_descriptor *config;
		rc = libusb_get_active_config_descriptor(priv->usb_device, &config);
		if (!fu_usb_device_libusb_error_to_gerror(rc, error))
			return 0x00;

		/* find the right data */
		for (guint i = 0; i < config->bNumInterfaces; i++) {
			const struct libusb_interface_descriptor *ifp =
			    &config->interface[i].altsetting[0];
			if (ifp->bInterfaceClass != class_id)
				continue;
			if (ifp->bInterfaceSubClass != subclass_id)
				continue;
			if (ifp->bInterfaceProtocol != protocol_id)
				continue;
			idx = ifp->iInterface;
			break;
		}
		libusb_free_config_descriptor(config);
	} else {
		g_autoptr(FuUsbInterface) iface = NULL;
		iface =
		    fu_usb_device_get_interface(self, class_id, subclass_id, protocol_id, error);
		if (iface == NULL)
			return 0x00;
		idx = fu_usb_interface_get_index(iface);
	}

	/* nothing matched */
	if (idx == 0x00) {
		g_set_error(error,
			    FWUPD_ERROR,
			    FWUPD_ERROR_NOT_SUPPORTED,
			    "no vendor descriptor for class 0x%02x, "
			    "subclass 0x%02x and protocol 0x%02x",
			    class_id,
			    subclass_id,
			    protocol_id);
		return 0x0;
	}

	/* save */
	if (fu_context_has_flag(fu_device_get_context(FU_DEVICE(self)),
				FU_CONTEXT_FLAG_SAVE_EVENTS)) {
		event = fu_device_save_event(FU_DEVICE(self), event_id);
		fu_device_event_set_data(event, "Data", &idx, sizeof(idx));
	}

	/* success */
	return idx;
}

/**
 * fu_usb_device_set_interface_alt:
 * @self: a #FuUsbDevice
 * @iface: bInterfaceNumber of the interface you wish to release
 * @alt: alternative setting number
 * @error: a #GError, or %NULL
 *
 * Sets an alternate setting on an interface.
 *
 * Return value: %TRUE on success
 *
 * Since: 2.0.0
 **/
gboolean
fu_usb_device_set_interface_alt(FuUsbDevice *self, guint8 iface, guint8 alt, GError **error)
{
	FuUsbDevicePrivate *priv = GET_PRIVATE(self);
	guint8 rc;

	g_return_val_if_fail(FU_IS_USB_DEVICE(self), FALSE);
	g_return_val_if_fail(error == NULL || *error == NULL, FALSE);

	/* emulating? */
	if (fu_device_has_flag(FU_DEVICE(self), FWUPD_DEVICE_FLAG_EMULATED))
		return TRUE;

	if (priv->handle == NULL)
		return fu_usb_device_not_open_error(self, error);
	rc = libusb_set_interface_alt_setting(priv->handle, (gint)iface, (gint)alt);
	return fu_usb_device_libusb_error_to_gerror(rc, error);
}

static gboolean
fu_usb_device_ensure_hid_descriptor(FuUsbDevice *self,
				    FuUsbHidDescriptor *hid_descriptor,
				    GError **error)
{
	gsize actual_length = 0;
	gsize bufsz = fu_usb_hid_descriptor_get_descriptor_length(hid_descriptor);
	g_autofree guint8 *buf = NULL;
	g_autoptr(GBytes) blob = NULL;

	/* already set */
	if (fu_usb_hid_descriptor_get_blob(hid_descriptor) != NULL)
		return TRUE;

	/* get HID descriptor */
	buf = g_malloc0(bufsz);
	g_debug("get 0x%x bytes of HID descriptor on iface 0x%x",
		(guint)bufsz,
		fu_usb_hid_descriptor_get_iface_number(hid_descriptor));
	if (!fu_usb_device_control_transfer(self,
					    FU_USB_DIRECTION_DEVICE_TO_HOST,
					    FU_USB_REQUEST_TYPE_STANDARD,
					    FU_USB_RECIPIENT_INTERFACE,
					    LIBUSB_REQUEST_GET_DESCRIPTOR,
					    LIBUSB_DT_REPORT << 8,
					    fu_usb_hid_descriptor_get_iface_number(hid_descriptor),
					    buf,
					    bufsz,
					    &actual_length,
					    5000,
					    NULL,
					    error)) {
		g_prefix_error_literal(error, "failed to get HID report descriptor: ");
		return FALSE;
	}
	fu_dump_raw(G_LOG_DOMAIN, "HidDescriptor", buf, bufsz);
	if (actual_length < bufsz) {
		g_set_error(error,
			    FWUPD_ERROR,
			    FWUPD_ERROR_NOT_FOUND,
			    "invalid data on HID interface 0x%x, got 0x%x and expected 0x%x",
			    fu_usb_hid_descriptor_get_iface_number(hid_descriptor),
			    (guint)actual_length,
			    (guint)bufsz);
		return FALSE;
	}

	/* success */
	blob = g_bytes_new_take(g_steal_pointer(&buf), actual_length);
	fu_usb_hid_descriptor_set_blob(hid_descriptor, blob);
	return TRUE;
}

static gboolean
fu_usb_device_ensure_hid_descriptors(FuUsbDevice *self, GError **error)
{
	FuUsbDevicePrivate *priv = GET_PRIVATE(self);

	if (fu_device_has_flag(FU_DEVICE(self), FWUPD_DEVICE_FLAG_EMULATED))
		return TRUE;

	if (priv->handle == NULL) {
		fu_usb_device_not_open_error(self, error);
		return FALSE;
	}
	if (!fu_usb_device_ensure_interfaces(self, error))
		return FALSE;
	for (guint i = 0; i < priv->hid_descriptors->len; i++) {
		FuUsbHidDescriptor *hid_descriptor = g_ptr_array_index(priv->hid_descriptors, i);
		g_autoptr(GError) error_local = NULL;
		if (!fu_usb_device_ensure_hid_descriptor(self, hid_descriptor, &error_local)) {
			if (g_error_matches(error_local, FWUPD_ERROR, FWUPD_ERROR_READ)) {
				g_debug("ignoring: %s", error_local->message);
			} else {
				g_propagate_error(error, g_steal_pointer(&error_local));
				return FALSE;
			}
		}
	}
	return TRUE;
}

/**
 * fu_usb_device_get_hid_descriptors:
 * @self: a #FuUsbDevice
 * @error: a #GError, or %NULL
 *
 * Gets all the HID descriptors exported by the device.
 *
 * The first time this method is used the hardware is queried and then after that cached results
 * are returned. To invalidate the caches use fu_device_invalidate().
 *
 * Return value: (transfer container) (element-type GBytes): an array of HID descriptors
 *
 * Since: 2.0.0
 **/
GPtrArray *
fu_usb_device_get_hid_descriptors(FuUsbDevice *self, GError **error)
{
	FuUsbDevicePrivate *priv = GET_PRIVATE(self);
	g_autoptr(GPtrArray) hid_descriptor_blobs =
	    g_ptr_array_new_with_free_func((GDestroyNotify)g_bytes_unref);

	g_return_val_if_fail(FU_IS_USB_DEVICE(self), NULL);
	g_return_val_if_fail(error == NULL || *error == NULL, NULL);

	if (!fu_usb_device_ensure_hid_descriptors(self, error))
		return NULL;
	for (guint i = 0; i < priv->hid_descriptors->len; i++) {
		FuUsbHidDescriptor *hid_descriptor = g_ptr_array_index(priv->hid_descriptors, i);
		if (fu_usb_hid_descriptor_get_blob(hid_descriptor) == NULL)
			continue;
		g_ptr_array_add(hid_descriptor_blobs,
				g_bytes_ref(fu_usb_hid_descriptor_get_blob(hid_descriptor)));
	}
	return g_steal_pointer(&hid_descriptor_blobs);
}

static gboolean
fu_usb_device_from_json(FuDevice *device, FwupdJsonObject *json_obj, GError **error)
{
	FuUsbDevice *self = FU_USB_DEVICE(device);
	FuUsbDevicePrivate *priv = GET_PRIVATE(self);
	const gchar *tmp;
	gint64 value = 0;
	g_autoptr(FwupdJsonArray) json_array_bos = NULL;
	g_autoptr(FwupdJsonArray) json_array_cfg = NULL;
	g_autoptr(FwupdJsonArray) json_array_hid = NULL;
	g_autoptr(FwupdJsonArray) json_array_ifaces = NULL;

	/* optional properties */
	tmp = fwupd_json_object_get_string(json_obj, "PlatformId", NULL);
	if (tmp != NULL)
		fu_device_set_physical_id(FU_DEVICE(self), tmp);
	if (!fwupd_json_object_get_integer_with_default(json_obj, "IdVendor", &value, 0x0, error))
		return FALSE;
	fu_device_set_vid(FU_DEVICE(self), value);
	if (!fwupd_json_object_get_integer_with_default(json_obj, "IdProduct", &value, 0x0, error))
		return FALSE;
	fu_device_set_pid(FU_DEVICE(self), value);
	if (!fwupd_json_object_get_integer_with_default(json_obj, "Device", &value, 0x0, error))
		return FALSE;
	priv->desc.bcdDevice = value;
	if (!fwupd_json_object_get_integer_with_default(json_obj, "USB", &value, 0x0, error))
		return FALSE;
	priv->desc.bcdUSB = value;
	if (!fwupd_json_object_get_integer_with_default(json_obj,
							"Manufacturer",
							&value,
							0x0,
							error))
		return FALSE;
	priv->desc.iManufacturer = value;
	if (!fwupd_json_object_get_integer_with_default(json_obj,
							"DeviceClass",
							&value,
							0x0,
							error))
		return FALSE;
	priv->desc.bDeviceClass = value;
	if (!fwupd_json_object_get_integer_with_default(json_obj,
							"DeviceSubClass",
							&value,
							0x0,
							error))
		return FALSE;
	priv->desc.bDeviceSubClass = value;
	if (!fwupd_json_object_get_integer_with_default(json_obj,
							"DeviceProtocol",
							&value,
							0x0,
							error))
		return FALSE;
	priv->desc.bDeviceProtocol = value;
	if (!fwupd_json_object_get_integer_with_default(json_obj, "Product", &value, 0x0, error))
		return FALSE;
	priv->desc.iProduct = value;
	if (!fwupd_json_object_get_integer_with_default(json_obj,
							"SerialNumber",
							&value,
							0x0,
							error))
		return FALSE;
	priv->desc.iSerialNumber = value;

	/* array of BOS descriptors */
	json_array_bos = fwupd_json_object_get_array(json_obj, "UsbBosDescriptors", NULL);
	if (json_array_bos != NULL) {
		for (guint i = 0; i < fwupd_json_array_get_size(json_array_bos); i++) {
			g_autoptr(FwupdJsonObject) json_obj_tmp = NULL;
			g_autoptr(FuUsbBosDescriptor) bos_descriptor =
			    g_object_new(FU_TYPE_USB_BOS_DESCRIPTOR, NULL);

			json_obj_tmp = fwupd_json_array_get_object(json_array_bos, i, error);
			if (json_obj_tmp == NULL)
				return FALSE;
			if (!fwupd_codec_from_json(FWUPD_CODEC(bos_descriptor),
						   json_obj_tmp,
						   error))
				return FALSE;
			g_ptr_array_add(priv->bos_descriptors, g_object_ref(bos_descriptor));
		}
	}

	/* array of config descriptors */
	json_array_cfg = fwupd_json_object_get_array(json_obj, "UsbConfigDescriptors", NULL);
	if (json_array_cfg != NULL) {
		for (guint i = 0; i < fwupd_json_array_get_size(json_array_cfg); i++) {
			g_autoptr(FwupdJsonObject) json_obj_tmp = NULL;
			g_autoptr(FuUsbConfigDescriptor) cfg_descriptor =
			    g_object_new(FU_TYPE_USB_CONFIG_DESCRIPTOR, NULL);

			json_obj_tmp = fwupd_json_array_get_object(json_array_cfg, i, error);
			if (json_obj_tmp == NULL)
				return FALSE;
			if (!fwupd_codec_from_json(FWUPD_CODEC(cfg_descriptor),
						   json_obj_tmp,
						   error))
				return FALSE;
			g_ptr_array_add(priv->cfg_descriptors, g_object_ref(cfg_descriptor));
		}
	}

	/* array of HID descriptors */
	json_array_hid = fwupd_json_object_get_array(json_obj, "UsbHidDescriptors", NULL);
	if (json_array_hid != NULL) {
		for (guint i = 0; i < fwupd_json_array_get_size(json_array_hid); i++) {
			g_autoptr(FwupdJsonObject) json_obj_tmp = fwupd_json_object_new();
			g_autoptr(FwupdJsonNode) json_node_tmp = NULL;
			g_autoptr(FuUsbHidDescriptor) hid_descriptor =
			    g_object_new(FU_TYPE_USB_HID_DESCRIPTOR, NULL);

			/* weirdly, this is encoded as a node, not an object */
			json_node_tmp = fwupd_json_array_get_node(json_array_hid, i, error);
			if (json_node_tmp == NULL)
				return FALSE;
			fwupd_json_object_add_node(json_obj_tmp, "Data", json_node_tmp);
			if (!fwupd_codec_from_json(FWUPD_CODEC(hid_descriptor),
						   json_obj_tmp,
						   error))
				return FALSE;
			g_ptr_array_add(priv->hid_descriptors, g_object_ref(hid_descriptor));
		}
	}

	/* array of interfaces */
	json_array_ifaces = fwupd_json_object_get_array(json_obj, "UsbInterfaces", NULL);
	if (json_array_ifaces != NULL) {
		for (guint i = 0; i < fwupd_json_array_get_size(json_array_ifaces); i++) {
			g_autoptr(FwupdJsonObject) json_obj_tmp = NULL;
			g_autoptr(FuUsbInterface) iface = g_object_new(FU_TYPE_USB_INTERFACE, NULL);

			json_obj_tmp = fwupd_json_array_get_object(json_array_ifaces, i, error);
			if (json_obj_tmp == NULL)
				return FALSE;
			if (!fwupd_codec_from_json(FWUPD_CODEC(iface), json_obj_tmp, error))
				return FALSE;
			fu_usb_device_add_interface_internal(self, iface);
		}
	}

	/* success */
	priv->interfaces_valid = TRUE;
	priv->bos_descriptors_valid = TRUE;
	return TRUE;
}

static void
fu_usb_device_add_json(FuDevice *device, FwupdJsonObject *json_obj, FwupdCodecFlags flags)
{
	FuUsbDevice *self = FU_USB_DEVICE(device);
	FuUsbDevicePrivate *priv = GET_PRIVATE(self);
	g_autoptr(GPtrArray) interfaces = NULL;
	g_autoptr(GError) error_bos = NULL;
	g_autoptr(GError) error_hid = NULL;
	g_autoptr(GError) error_interfaces = NULL;

	/* optional properties */
	fwupd_json_object_add_string(json_obj, "GType", "FuUsbDevice");
	fwupd_json_object_add_string(json_obj,
				     "PlatformId",
				     fu_device_get_physical_id(FU_DEVICE(self)));
	if (fu_device_get_vid(FU_DEVICE(self)) != 0) {
		fwupd_json_object_add_integer(json_obj,
					      "IdVendor",
					      fu_device_get_vid(FU_DEVICE(self)));
	}
	if (fu_device_get_pid(FU_DEVICE(self)) != 0) {
		fwupd_json_object_add_integer(json_obj,
					      "IdProduct",
					      fu_device_get_pid(FU_DEVICE(self)));
	}
	if (priv->desc.bcdDevice != 0)
		fwupd_json_object_add_integer(json_obj, "Device", priv->desc.bcdDevice);
	if (priv->desc.bcdUSB != 0)
		fwupd_json_object_add_integer(json_obj, "USB", priv->desc.bcdUSB);
	if (priv->desc.iManufacturer != 0)
		fwupd_json_object_add_integer(json_obj, "Manufacturer", priv->desc.iManufacturer);
	if (priv->desc.bDeviceClass != 0)
		fwupd_json_object_add_integer(json_obj, "DeviceClass", priv->desc.bDeviceClass);
	if (priv->desc.bDeviceSubClass != 0)
		fwupd_json_object_add_integer(json_obj,
					      "DeviceSubClass",
					      priv->desc.bDeviceSubClass);
	if (priv->desc.bDeviceProtocol != 0)
		fwupd_json_object_add_integer(json_obj,
					      "DeviceProtocol",
					      priv->desc.bDeviceProtocol);
	if (priv->desc.iProduct != 0)
		fwupd_json_object_add_integer(json_obj, "Product", priv->desc.iProduct);
	if (priv->desc.iSerialNumber != 0)
		fwupd_json_object_add_integer(json_obj, "SerialNumber", priv->desc.iSerialNumber);

	/* array of BOS descriptors */
	if (!fu_usb_device_ensure_bos_descriptors(self, &error_bos))
		g_debug("%s", error_bos->message);
	if (priv->bos_descriptors->len > 0) {
		g_autoptr(FwupdJsonArray) json_arr = fwupd_json_array_new();
		for (guint i = 0; i < priv->bos_descriptors->len; i++) {
			FuUsbBosDescriptor *bos_descriptor =
			    g_ptr_array_index(priv->bos_descriptors, i);
			g_autoptr(FwupdJsonObject) json_obj_tmp = fwupd_json_object_new();
			fwupd_codec_to_json(FWUPD_CODEC(bos_descriptor), json_obj_tmp, flags);
			fwupd_json_array_add_object(json_arr, json_obj_tmp);
		}
		fwupd_json_object_add_array(json_obj, "UsbBosDescriptors", json_arr);
	}

	/* array of config descriptors */
	if (priv->cfg_descriptors->len > 0) {
		g_autoptr(FwupdJsonArray) json_arr = fwupd_json_array_new();
		for (guint i = 0; i < priv->cfg_descriptors->len; i++) {
			FuUsbConfigDescriptor *cfg_descriptor =
			    g_ptr_array_index(priv->cfg_descriptors, i);
			g_autoptr(FwupdJsonObject) json_obj_tmp = fwupd_json_object_new();
			fwupd_codec_to_json(FWUPD_CODEC(cfg_descriptor), json_obj_tmp, flags);
			fwupd_json_array_add_object(json_arr, json_obj_tmp);
		}
		fwupd_json_object_add_array(json_obj, "UsbConfigDescriptors", json_arr);
	}

	/* array of HID descriptors */
	if (!fu_usb_device_ensure_hid_descriptors(self, &error_hid)) {
		g_debug("%s", error_hid->message);
	} else if (priv->hid_descriptors->len > 0) {
		g_autoptr(FwupdJsonArray) json_arr = fwupd_json_array_new();
		for (guint i = 0; i < priv->hid_descriptors->len; i++) {
			FuUsbHidDescriptor *hid_descriptor =
			    g_ptr_array_index(priv->hid_descriptors, i);
			g_autoptr(FwupdJsonObject) json_obj_tmp = fwupd_json_object_new();
			g_autoptr(FwupdJsonNode) json_node_tmp = NULL;

			fwupd_codec_to_json(FWUPD_CODEC(hid_descriptor), json_obj_tmp, flags);
			/* weirdly, this is encoded as a node, not an object */
			json_node_tmp = fwupd_json_object_get_node(json_obj_tmp, "Data", NULL);
			if (json_node_tmp != NULL)
				fwupd_json_array_add_node(json_arr, json_node_tmp);
		}
		fwupd_json_object_add_array(json_obj, "UsbHidDescriptors", json_arr);
	}

	/* array of interfaces */
	interfaces = fu_usb_device_get_interfaces(self, &error_interfaces);
	if (interfaces == NULL) {
		g_debug("%s", error_interfaces->message);
	} else if (interfaces->len > 0) {
		g_autoptr(FwupdJsonArray) json_arr = fwupd_json_array_new();
		for (guint i = 0; i < interfaces->len; i++) {
			FuUsbInterface *iface = g_ptr_array_index(interfaces, i);
			g_autoptr(FwupdJsonObject) json_obj_tmp = fwupd_json_object_new();
			fwupd_codec_to_json(FWUPD_CODEC(iface), json_obj_tmp, flags);
			fwupd_json_array_add_object(json_arr, json_obj_tmp);
		}
		fwupd_json_object_add_array(json_obj, "UsbInterfaces", json_arr);
	}
}

/**
 * fu_usb_device_new: (skip):
 * @ctx: (nullable): a #FuContext
 * @usb_device: a #libusb_device
 *
 * Creates a new #FuUsbDevice.
 *
 * Returns: (transfer full): a #FuUsbDevice
 *
 * Since: 2.0.0
 **/
FuUsbDevice *
fu_usb_device_new(FuContext *ctx, libusb_device *usb_device)
{
	return g_object_new(FU_TYPE_USB_DEVICE, "context", ctx, "libusb-device", usb_device, NULL);
}

static void
fu_usb_device_to_string(FuDevice *device, guint idt, GString *str)
{
	FuUsbDevice *self = FU_USB_DEVICE(device);
	FuUsbDevicePrivate *priv = GET_PRIVATE(self);

	if (priv->configuration >= 0)
		fwupd_codec_string_append_hex(str, idt, "Configuration", priv->configuration);
	fwupd_codec_string_append_hex(str, idt, "ClaimRetryCount", priv->claim_retry_count);
	fwupd_codec_string_append_hex(str, idt, "BusNum", priv->busnum);
	fwupd_codec_string_append_hex(str, idt, "DevNum", priv->devnum);
	for (guint i = 0; priv->device_interfaces != NULL && i < priv->device_interfaces->len;
	     i++) {
		FuUsbDeviceInterface *iface = g_ptr_array_index(priv->device_interfaces, i);
		g_autofree gchar *tmp = g_strdup_printf("InterfaceNumber#%02x", iface->number);
		fwupd_codec_string_append(str, idt, tmp, iface->claimed ? "claimed" : "released");
	}
	fwupd_codec_string_append(str,
				  idt,
				  "Class",
				  fu_usb_class_to_string(fu_usb_device_get_class(self)));
	if (priv->interfaces->len > 0) {
		fwupd_codec_string_append(str, idt, "Interfaces", "");
		for (guint i = 0; i < priv->interfaces->len; i++) {
			FuUsbInterface *iface = g_ptr_array_index(priv->interfaces, i);
			fwupd_codec_add_string(FWUPD_CODEC(iface), idt + 1, str);
		}
	}
	if (priv->bos_descriptors->len > 0) {
		fwupd_codec_string_append(str, idt, "BosDescriptors", "");
		for (guint i = 0; i < priv->bos_descriptors->len; i++) {
			FuUsbBosDescriptor *bos_descriptor =
			    g_ptr_array_index(priv->bos_descriptors, i);
			fwupd_codec_add_string(FWUPD_CODEC(bos_descriptor), idt + 1, str);
		}
	}
	if (priv->cfg_descriptors->len > 0) {
		fwupd_codec_string_append(str, idt, "ConfigDescriptors", "");
		for (guint i = 0; i < priv->cfg_descriptors->len; i++) {
			FuUsbConfigDescriptor *cfg_descriptor =
			    g_ptr_array_index(priv->cfg_descriptors, i);
			fwupd_codec_add_string(FWUPD_CODEC(cfg_descriptor), idt + 1, str);
		}
	}
	if (priv->hid_descriptors->len > 0) {
		fwupd_codec_string_append(str, idt, "HidDescriptors", "");
		for (guint i = 0; i < priv->hid_descriptors->len; i++) {
			GBytes *hid_descriptor = g_ptr_array_index(priv->hid_descriptors, i);
			g_autofree gchar *key = g_strdup_printf("HidDescriptor0x%02u", i);
			fwupd_codec_string_append_hex(str,
						      idt + 1,
						      key,
						      g_bytes_get_size(hid_descriptor));
		}
	}
}

static gboolean
fu_usb_device_fuzzer_test_input(FuFuzzer *fuzzer, GBytes *blob, GError **error)
{
	FuUsbDevice *self = FU_USB_DEVICE(fuzzer);
	return fu_usb_device_parse_descriptor(self, blob, error);
}

static GBytes *
fu_usb_device_fuzzer_build_example(FuFuzzer *fuzzer, GBytes *blob, GError **error)
{
	g_autoptr(FuFirmware) fw = NULL;
	g_type_ensure(FU_TYPE_FIRMWARE);
	fw = fu_firmware_new_from_xml(g_bytes_get_data(blob, NULL), error);
	if (fw == NULL)
		return NULL;
	return fu_firmware_write(fw, error);
}

static void
fu_usb_device_fuzzer_iface_init(FuFuzzerInterface *iface)
{
	iface->test_input = fu_usb_device_fuzzer_test_input;
	iface->build_example = fu_usb_device_fuzzer_build_example;
}

static void
fu_usb_device_class_init(FuUsbDeviceClass *klass)
{
	GObjectClass *object_class = G_OBJECT_CLASS(klass);
	FuDeviceClass *device_class = FU_DEVICE_CLASS(klass);
	GParamSpec *pspec;

	object_class->finalize = fu_usb_device_finalize;
	object_class->get_property = fu_usb_device_get_property;
	object_class->set_property = fu_usb_device_set_property;
	device_class->open = fu_usb_device_open;
	device_class->setup = fu_usb_device_setup;
	device_class->ready = fu_usb_device_ready;
	device_class->close = fu_usb_device_close;
	device_class->probe = fu_usb_device_probe;
	device_class->invalidate = fu_usb_device_invalidate;
	device_class->to_string = fu_usb_device_to_string;
	device_class->incorporate = fu_usb_device_incorporate;
	device_class->convert_version = fu_usb_device_convert_version;
	device_class->from_json = fu_usb_device_from_json;
	device_class->add_json = fu_usb_device_add_json;

	/* used as device flags */
	quarks[QUARK_ADD_INSTANCE_ID_REV] =
	    g_quark_from_static_string(FU_DEVICE_PRIVATE_FLAG_ADD_INSTANCE_ID_REV);

	/**
	 * FuUsbDevice:libusb-device:
	 *
	 * The low-level #libusb_device.
	 *
	 * Since: 2.0.0
	 */
	pspec = g_param_spec_pointer("libusb-device",
				     NULL,
				     NULL,
				     G_PARAM_CONSTRUCT_ONLY | G_PARAM_READWRITE);
	g_object_class_install_property(object_class, PROP_LIBUSB_DEVICE, pspec);
}
