Function hid_winapi_get_container_id

lib/hidapi/windows/hid.c:1370–1419

}

int HID_API_EXPORT_CALL hid_winapi_get_container_id(hid_device *dev, GUID *container_id)
{
	wchar_t *interface_path = NULL, *device_id = NULL;
	CONFIGRET cr = CR_FAILURE;
	DEVINST dev_node;
	DEVPROPTYPE property_type;
	ULONG len;

	if (!container_id) {
		register_string_error(dev, L"Invalid Container ID");
		return -1;
	}

	register_string_error(dev, NULL);

	interface_path = hid_internal_UTF8toUTF16(dev->device_info->path);
	if (!interface_path) {
		register_string_error(dev, L"Path conversion failure");
		goto end;
	}

	/* Get the device id from interface path */
	device_id = hid_internal_get_device_interface_property(interface_path, &DEVPKEY_Device_InstanceId, DEVPROP_TYPE_STRING);
	if (!device_id) {
		register_string_error(dev, L"Failed to get device interface property InstanceId");
		goto end;
	}

	/* Open devnode from device id */
	cr = CM_Locate_DevNodeW(&dev_node, (DEVINSTID_W)device_id, CM_LOCATE_DEVNODE_NORMAL);
	if (cr != CR_SUCCESS) {
		register_string_error(dev, L"Failed to locate device node");
		goto end;
	}

	/* Get the container id from devnode */
	len = sizeof(*container_id);
	cr = CM_Get_DevNode_PropertyW(dev_node, &DEVPKEY_Device_ContainerId, &property_type, (PBYTE)container_id, &len, 0);
	if (cr == CR_SUCCESS && property_type != DEVPROP_TYPE_GUID)
		cr = CR_FAILURE;

	if (cr != CR_SUCCESS)
		register_string_error(dev, L"Failed to read ContainerId property from device node");

end:
	free(interface_path);
	free(device_id);

	return cr == CR_SUCCESS ? 0 : -1;
}


int HID_API_EXPORT_CALL hid_get_report_descriptor(hid_device *dev, unsigned char *buf, size_t buf_size)