/*
 * Windows backend for libusb 1.0
 * Copyright (C) 2009 Pete Batard <pbatard@gmail.com>
 * Parts of this code adapted from libusb-win32-v1 by Stephan Meyer
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

#pragma once

// Windows API default is uppercase - ugh!
#if !defined(bool)
#define bool BOOL
#endif
#if !defined(true)
#define true TRUE
#endif
#if !defined(false)
#define false FALSE
#endif

#if !defined(libusb_bus_t)
#define libusb_bus_t uint8_t
#define LIBUSB_BUS_MAX UINT8_MAX
#endif
#if !defined(libusb_devaddr_t)
#define libusb_devaddr_t uint8_t
#define LIBUSB_DEVADDR_MAX UINT8_MAX
#endif

// Missing from MSVC6 setupapi.h
#if !defined(SPDRP_ADDRESS)
#define SPDRP_ADDRESS	28
#endif

#if defined(__CYGWIN__ )
// cygwin produces a warning unless these prototypes are defined
extern int _snprintf(char *buffer, size_t count, const char *format, ...);
extern char *_strdup(const char *strSource);
#endif
#define safe_free(p) do {if (p != NULL) {free(p); p = NULL;}} while(0)
#define safe_closehandle(h) do {if (h != INVALID_HANDLE_VALUE) {CloseHandle(h); h = INVALID_HANDLE_VALUE;}} while(0)
#define safe_strncpy(dst, dst_max, src, count) strncpy(dst, src, min(count, dst_max - 1))
#define safe_strcpy(dst, dst_max, src) safe_strncpy(dst, dst_max, src, strlen(src)+1)
#define safe_strncat(dst, dst_max, src, count) strncat(dst, src, min(count, dst_max - strlen(dst) - 1))
#define safe_strcat(dst, dst_max, src) safe_strncat(dst, dst_max, src, strlen(src)+1)
#define safe_strcmp(str1, str2) strcmp(((str1==NULL)?"<NULL>":str1), ((str2==NULL)?"<NULL>":str2))
#define safe_strncmp(str1, str2, count) strncmp(((str1==NULL)?"<NULL>":str1), ((str2==NULL)?"<NULL>":str2), count)
#define safe_strlen(str) ((str==NULL)?0:strlen(str))
#define safe_strdup _strdup
#define safe_sprintf _snprintf
#define safe_unref_device(dev) do {if (dev != NULL) {libusb_unref_device(dev); dev = NULL;}} while(0)
#define wchar_to_utf8_ms(wstr, str, strlen) WideCharToMultiByte(CP_UTF8, 0, wstr, -1, str, strlen, NULL, NULL)
inline void upperize(char* str) {
	size_t i;
	if (str == NULL) return;
	for (i=0; i<strlen(str); i++)
		str[i] = (char)toupper((int)str[i]);
}

#define MAX_CTRL_BUFFER_LENGTH      4096
#define MAX_USB_DEVICES             256
#define MAX_USB_STRING_LENGTH       128
#define MAX_HID_REPORT_SIZE         1024
#define MAX_HID_DESCRIPTOR_SIZE     256
#define MAX_GUID_STRING_LENGTH      40
#define MAX_PATH_LENGTH             128
#define MAX_KEY_LENGTH              256
#define MAX_TIMER_SEMAPHORES        128
#define ERR_BUFFER_SIZE             256

// Handle code for HID interface that have been claimed ("dibs")
#define INTERFACE_CLAIMED           ((HANDLE)0xD1B5)
// Additional return code for HID operations that completed synchronously
#define LIBUSB_COMPLETED            (LIBUSB_SUCCESS + 1)

// http://msdn.microsoft.com/en-us/library/bb663109.aspx
// http://msdn.microsoft.com/en-us/library/bb663093.aspx
#if !defined(GUID_DEVINTERFACE_USB_HOST_CONTROLLER)
const GUID GUID_DEVINTERFACE_USB_HOST_CONTROLLER = { 0x3ABF6F2D, 0x71C4, 0x462A, {0x8A, 0x92, 0x1E, 0x68, 0x61, 0xE6, 0xAF, 0x27} };
#endif
#if !defined(GUID_DEVINTERFACE_USB_DEVICE)
const GUID GUID_DEVINTERFACE_USB_DEVICE = { 0xA5DCBF10, 0x6530, 0x11D2, {0x90, 0x1F, 0x00, 0xC0, 0x4F, 0xB9, 0x51, 0xED} };
#endif


/*
 * Multiple USB API backend support
 */
#define USB_API_UNSUPPORTED 0
#define USB_API_COMPOSITE   1
#define USB_API_WINUSB      2
#define USB_API_HID         3
#define USB_API_MAX         4

const GUID CLASS_GUID_UNSUPPORTED   = { 0x00000000, 0x0000, 0x0000, {0x00, 0x00, 0x00, 0x00, 0x00, 0x0F, 0x57, 0xDA} };
const GUID CLASS_GUID_HID           = { 0x745A17A0, 0x74D3, 0x11D0, {0xB6, 0xFE, 0x00, 0xA0, 0xC9, 0x0F, 0x57, 0xDA} };
const GUID CLASS_GUID_LIBUSB_WINUSB = { 0x78A1C341, 0x4539, 0x11D3, {0xB8, 0x8D, 0x00, 0xC0, 0x4F, 0xAD, 0x51, 0x71} };
const GUID CLASS_GUID_COMPOSITE     = { 0x36FC9E60, 0xC465, 0x11cF, {0x80, 0x56, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00} };

struct windows_usb_api_backend {
	const uint8_t id;
	const GUID *class_guid;  // The Class GUID (for fallback in case the driver name cannot be read)
	const char *driver_name; // Driver name, without .sys, e.g. "usbccgp"
	int (*init)(struct libusb_context *ctx);
	int (*exit)(void);
	int (*open)(struct libusb_device_handle *dev_handle);
	void (*close)(struct libusb_device_handle *dev_handle);
	int (*claim_interface)(struct libusb_device_handle *dev_handle, int iface);
	int (*set_interface_altsetting)(struct libusb_device_handle *dev_handle, int iface, int altsetting);
	int (*release_interface)(struct libusb_device_handle *dev_handle, int iface);
	int (*clear_halt)(struct libusb_device_handle *dev_handle, unsigned char endpoint);
	int (*reset_device)(struct libusb_device_handle *dev_handle);
	int (*submit_bulk_transfer)(struct usbi_transfer *itransfer);
	int (*submit_iso_transfer)(struct usbi_transfer *itransfer);
	int (*submit_control_transfer)(struct usbi_transfer *itransfer);
	int (*abort_control)(struct usbi_transfer *itransfer);
	int (*abort_transfers)(struct usbi_transfer *itransfer);
};

extern const struct windows_usb_api_backend usb_api_backend[USB_API_MAX];

#define PRINT_UNSUPPORTED_API(fname)        \
	usbi_dbg("unsupported API call for '"   \
		#fname "'");                        \
	return LIBUSB_ERROR_NOT_SUPPORTED;

enum windows_version {
	WINDOWS_UNSUPPORTED,
	WINDOWS_XP,
	WINDOWS_VISTA_AND_LATER,
};


/*
 * private structures definition
 * with inline pseudo constructors/destructors
 */

// HCDs
struct windows_hcd_priv {
	char *path;
	struct windows_hcd_priv *next;
};

static inline void windows_hcd_priv_init(struct windows_hcd_priv* p) {
	p->path = NULL;
	p->next = NULL;
}

static inline void windows_hcd_priv_release(struct windows_hcd_priv* p) {
	safe_free(p->path);
}

// TODO: move hid desc to libusb.h?
struct libusb_hid_descriptor {
	uint8_t  bLength;
	uint8_t  bDescriptorType;
	uint16_t bcdHID;
	uint8_t  bCountryCode;
	uint8_t  bNumDescriptors;
	uint8_t  bClassDescriptorType;
	uint16_t wClassDescriptorLength;
};
#define LIBUSB_DT_HID_SIZE              9
#define HID_MAX_CONFIG_DESC_SIZE (LIBUSB_DT_CONFIG_SIZE + LIBUSB_DT_INTERFACE_SIZE \
	+ LIBUSB_DT_HID_SIZE + 2 * LIBUSB_DT_ENDPOINT_SIZE)
#define HID_MAX_REPORT_SIZE             1024 
#define HID_IN_EP                       0x81
#define HID_OUT_EP                      0x02
#define LIBUSB_REQ_RECIPIENT(request_type) ((request_type) & 0x1F)
#define LIBUSB_REQ_TYPE(request_type) ((request_type) & (0x03 << 5))
#define LIBUSB_REQ_IN(request_type) ((request_type) & LIBUSB_ENDPOINT_IN)
#define LIBUSB_REQ_OUT(request_type) (!LIBUSB_REQ_IN(request_type))

enum libusb_hid_request_type {
	HID_REQ_GET_REPORT = 0x01,
	HID_REQ_GET_IDLE = 0x02,
	HID_REQ_GET_PROTOCOL = 0x03,
	HID_REQ_SET_REPORT = 0x09,
	HID_REQ_SET_IDLE = 0x0A,
	HID_REQ_SET_PROTOCOL = 0x0B
};

enum libusb_hid_report_type {
	HID_REPORT_TYPE_INPUT = 0x01,
	HID_REPORT_TYPE_OUTPUT = 0x02,
	HID_REPORT_TYPE_FEATURE = 0x03
};

struct hid_device_priv {
	uint16_t vid;
	uint16_t pid;
	uint8_t config;
	uint16_t output_report_size;
	uint16_t input_report_size;
	uint16_t feature_report_size;
	WCHAR man_string[MAX_USB_STRING_LENGTH];
	WCHAR prod_string[MAX_USB_STRING_LENGTH];
	WCHAR ser_string[MAX_USB_STRING_LENGTH];
};

typedef struct libusb_device_descriptor USB_DEVICE_DESCRIPTOR, *PUSB_DEVICE_DESCRIPTOR;
struct windows_device_priv {
	struct libusb_device *parent_dev;   // access to parent is required for usermode ops
	ULONG connection_index;             // also required for some usermode ops
	char *path;                         // path used by Windows to reference the USB node
	struct windows_usb_api_backend const *apib;
	struct {
		char *path;                     // each interface needs a Windows device interface path,
		struct windows_usb_api_backend const *apib; // an API backend (multiple drivers support),
		int8_t nb_endpoints;            // and a set of endpoint addresses (USB_MAXENDPOINTS)
		uint8_t *endpoint;	            
	} usb_interface[USB_MAXINTERFACES];
	uint8_t composite_api_flags;        // HID and composite devices require additional data
	struct hid_device_priv *hid;
	uint8_t active_config;
	USB_DEVICE_DESCRIPTOR dev_descriptor;
	unsigned char **config_descriptor;  // list of pointers to the cached config descriptors
};

static inline void windows_device_priv_init(struct windows_device_priv* p) {
	int i;
	p->parent_dev = NULL;
	p->connection_index = 0;
	p->path = NULL;
	p->apib = &usb_api_backend[USB_API_UNSUPPORTED];
	p->composite_api_flags = 0;
	p->hid = NULL;
	p->active_config = 0;
	p->config_descriptor = NULL;
	memset(&(p->dev_descriptor), 0, sizeof(USB_DEVICE_DESCRIPTOR));
	for (i=0; i<USB_MAXINTERFACES; i++) {
		p->usb_interface[i].path = NULL;
		p->usb_interface[i].apib = &usb_api_backend[USB_API_UNSUPPORTED];
		p->usb_interface[i].nb_endpoints = 0;
		p->usb_interface[i].endpoint = NULL;
	}
}

static inline void windows_device_priv_release(struct windows_device_priv* p, int num_configurations) {
	int i;
	safe_free(p->path);
	if ((num_configurations > 0) && (p->config_descriptor != NULL)) {
		for (i=0; i < num_configurations; i++)
			safe_free(p->config_descriptor[i]);
	}
	safe_free(p->config_descriptor);
	safe_free(p->hid);
	for (i=0; i<USB_MAXINTERFACES; i++) {
		safe_free(p->usb_interface[i].path);
		safe_free(p->usb_interface[i].endpoint);
	}
}

static inline struct windows_device_priv *__device_priv(struct libusb_device *dev) {
	return (struct windows_device_priv *)dev->os_priv;
}

struct interface_handle_t {
	HANDLE dev_handle; // WinUSB needs an extra handle for the file
	HANDLE api_handle; // used by the API to communicate with the device
};

struct windows_device_handle_priv {
	int active_interface;
	struct interface_handle_t interface_handle[USB_MAXINTERFACES];
};

static inline struct windows_device_handle_priv *__device_handle_priv(
	struct libusb_device_handle *handle)
{
	return (struct windows_device_handle_priv *) handle->os_priv;
}

// used for async polling functions
struct windows_transfer_priv {
	struct winfd pollable_fd;
	uint8_t interface_number;
};


/*
 * Windows DDK API definitions. Most of it copied from MinGW's includes
 */
typedef DWORD DEVNODE, DEVINST;
typedef DEVNODE *PDEVNODE, *PDEVINST;
typedef DWORD RETURN_TYPE;
typedef RETURN_TYPE	CONFIGRET;

#define CR_SUCCESS                              0x00000000
#define CR_NO_SUCH_DEVNODE                      0x0000000D
#if defined(_CFGMGR32_)
#define CMAPI DECLSPEC_EXPORT
#else
#define CMAPI DECLSPEC_IMPORT
#endif

#define USB_DEVICE_DESCRIPTOR_TYPE              LIBUSB_DT_DEVICE
#define USB_CONFIGURATION_DESCRIPTOR_TYPE       LIBUSB_DT_CONFIG
#define USB_STRING_DESCRIPTOR_TYPE              LIBUSB_DT_STRING
#define USB_INTERFACE_DESCRIPTOR_TYPE           LIBUSB_DT_INTERFACE
#define USB_ENDPOINT_DESCRIPTOR_TYPE            LIBUSB_DT_ENDPOINT

#define USB_REQUEST_GET_STATUS                  LIBUSB_REQUEST_GET_STATUS
#define USB_REQUEST_CLEAR_FEATURE               LIBUSB_REQUEST_CLEAR_FEATURE
#define USB_REQUEST_SET_FEATURE                 LIBUSB_REQUEST_SET_FEATURE
#define USB_REQUEST_SET_ADDRESS                 LIBUSB_REQUEST_SET_ADDRESS
#define USB_REQUEST_GET_DESCRIPTOR              LIBUSB_REQUEST_GET_DESCRIPTOR
#define USB_REQUEST_SET_DESCRIPTOR              LIBUSB_REQUEST_SET_DESCRIPTOR
#define USB_REQUEST_GET_CONFIGURATION           LIBUSB_REQUEST_GET_CONFIGURATION
#define USB_REQUEST_SET_CONFIGURATION           LIBUSB_REQUEST_SET_CONFIGURATION
#define USB_REQUEST_GET_INTERFACE               LIBUSB_REQUEST_GET_INTERFACE
#define USB_REQUEST_SET_INTERFACE               LIBUSB_REQUEST_SET_INTERFACE
#define USB_REQUEST_SYNC_FRAME                  LIBUSB_REQUEST_SYNCH_FRAME

#define HCD_GET_ROOT_HUB_NAME                   258
#define USB_GET_NODE_INFORMATION                258
#define USB_GET_NODE_CONNECTION_INFORMATION     259
#define USB_GET_DESCRIPTOR_FROM_NODE_CONNECTION 260
#define USB_GET_NODE_CONNECTION_NAME            261
#define USB_GET_HUB_CAPABILITIES                271
#if !defined(USB_GET_HUB_CAPABILITIES_EX)
#define USB_GET_HUB_CAPABILITIES_EX             276
#endif

#ifndef METHOD_BUFFERED
#define METHOD_BUFFERED                         0
#endif
#ifndef FILE_ANY_ACCESS
#define FILE_ANY_ACCESS                         0x00000000
#endif
#ifndef FILE_DEVICE_UNKNOWN
#define FILE_DEVICE_UNKNOWN                     0x00000022
#endif
#ifndef FILE_DEVICE_USB
#define FILE_DEVICE_USB                         FILE_DEVICE_UNKNOWN
#endif

#ifndef CTL_CODE
#define CTL_CODE(DeviceType, Function, Method, Access)( \
  ((DeviceType) << 16) | ((Access) << 14) | ((Function) << 2) | (Method))
#endif

typedef enum _USB_CONNECTION_STATUS {
	NoDeviceConnected,
	DeviceConnected,
	DeviceFailedEnumeration,
	DeviceGeneralFailure,
	DeviceCausedOvercurrent,
	DeviceNotEnoughPower,
	DeviceNotEnoughBandwidth,
	DeviceHubNestedTooDeeply,
	DeviceInLegacyHub
} USB_CONNECTION_STATUS, *PUSB_CONNECTION_STATUS;

typedef enum _USB_HUB_NODE {
	UsbHub,
	UsbMIParent
} USB_HUB_NODE;

CMAPI CONFIGRET WINAPI CM_Get_Parent(
  /*OUT*/ PDEVINST  pdnDevInst,
  /*IN*/ DEVINST  dnDevInst,
  /*IN*/ ULONG  ulFlags);

CMAPI CONFIGRET WINAPI CM_Get_Child(
  /*OUT*/ PDEVINST  pdnDevInst,
  /*IN*/ DEVINST  dnDevInst,
  /*IN*/ ULONG  ulFlags);

CMAPI CONFIGRET WINAPI CM_Get_Sibling(
  /*OUT*/ PDEVINST  pdnDevInst,
  /*IN*/ DEVINST  DevInst,
  /*IN*/ ULONG  ulFlags);

CMAPI CONFIGRET WINAPI CM_Get_Device_IDA(
  /*IN*/ DEVINST  dnDevInst,
  /*OUT*/ PCHAR  Buffer,
  /*IN*/ ULONG  BufferLen,
  /*IN*/ ULONG  ulFlags);

CMAPI CONFIGRET WINAPI CM_Get_Device_IDW(
  /*IN*/ DEVINST  dnDevInst,
  /*OUT*/ PWCHAR  Buffer,
  /*IN*/ ULONG  BufferLen,
  /*IN*/ ULONG  ulFlags);

#ifdef UNICODE
#define CM_Get_Device_ID CM_Get_Device_IDW
#else
#define CM_Get_Device_ID CM_Get_Device_IDA
#endif /* UNICODE */

#define IOCTL_USB_GET_HUB_CAPABILITIES_EX \
  CTL_CODE( FILE_DEVICE_USB, USB_GET_HUB_CAPABILITIES_EX, METHOD_BUFFERED, FILE_ANY_ACCESS)

#define IOCTL_USB_GET_HUB_CAPABILITIES \
  CTL_CODE(FILE_DEVICE_USB, USB_GET_HUB_CAPABILITIES, METHOD_BUFFERED, FILE_ANY_ACCESS)

#define IOCTL_USB_GET_DESCRIPTOR_FROM_NODE_CONNECTION \
  CTL_CODE(FILE_DEVICE_USB, USB_GET_DESCRIPTOR_FROM_NODE_CONNECTION, METHOD_BUFFERED, FILE_ANY_ACCESS)

#define IOCTL_USB_GET_ROOT_HUB_NAME \
  CTL_CODE(FILE_DEVICE_USB, HCD_GET_ROOT_HUB_NAME, METHOD_BUFFERED, FILE_ANY_ACCESS)

#define IOCTL_USB_GET_NODE_INFORMATION \
  CTL_CODE(FILE_DEVICE_USB, USB_GET_NODE_INFORMATION, METHOD_BUFFERED, FILE_ANY_ACCESS)

#define IOCTL_USB_GET_NODE_CONNECTION_INFORMATION \
  CTL_CODE(FILE_DEVICE_USB, USB_GET_NODE_CONNECTION_INFORMATION, METHOD_BUFFERED, FILE_ANY_ACCESS)

#define IOCTL_USB_GET_NODE_CONNECTION_ATTRIBUTES \
  CTL_CODE(FILE_DEVICE_USB, USB_GET_NODE_CONNECTION_ATTRIBUTES, METHOD_BUFFERED, FILE_ANY_ACCESS)

#define IOCTL_USB_GET_NODE_CONNECTION_NAME \
  CTL_CODE(FILE_DEVICE_USB, USB_GET_NODE_CONNECTION_NAME, METHOD_BUFFERED, FILE_ANY_ACCESS)

// Most of the structures below need to be packed
#pragma pack(push, 1)

typedef struct _USB_INTERFACE_DESCRIPTOR { 
  UCHAR  bLength;
  UCHAR  bDescriptorType;
  UCHAR  bInterfaceNumber;
  UCHAR  bAlternateSetting;
  UCHAR  bNumEndpoints;
  UCHAR  bInterfaceClass;
  UCHAR  bInterfaceSubClass;
  UCHAR  bInterfaceProtocol;
  UCHAR  iInterface;
} USB_INTERFACE_DESCRIPTOR, *PUSB_INTERFACE_DESCRIPTOR;

typedef struct _USB_CONFIGURATION_DESCRIPTOR { 
  UCHAR  bLength;
  UCHAR  bDescriptorType;
  USHORT  wTotalLength;
  UCHAR  bNumInterfaces;
  UCHAR  bConfigurationValue;
  UCHAR  iConfiguration;
  UCHAR  bmAttributes;
  UCHAR  MaxPower;
} USB_CONFIGURATION_DESCRIPTOR, *PUSB_CONFIGURATION_DESCRIPTOR;

typedef struct _USB_CONFIGURATION_DESCRIPTOR_SHORT {
	struct {
		ULONG ConnectionIndex;
		struct {
			UCHAR bmRequest;
			UCHAR bRequest;
			USHORT wValue;
			USHORT wIndex;
			USHORT wLength;
		} SetupPacket;
	} req;
	USB_CONFIGURATION_DESCRIPTOR data;
} USB_CONFIGURATION_DESCRIPTOR_SHORT;

typedef struct _USB_ENDPOINT_DESCRIPTOR { 
  UCHAR  bLength;
  UCHAR  bDescriptorType;
  UCHAR  bEndpointAddress;
  UCHAR  bmAttributes;
  USHORT  wMaxPacketSize;
  UCHAR  bInterval;
} USB_ENDPOINT_DESCRIPTOR, *PUSB_ENDPOINT_DESCRIPTOR;

typedef struct _USB_DESCRIPTOR_REQUEST {
	ULONG  ConnectionIndex;
	struct {
		UCHAR  bmRequest;
		UCHAR  bRequest;
		USHORT  wValue;
		USHORT  wIndex;
		USHORT  wLength;
	} SetupPacket;
//	UCHAR  Data[0];
} USB_DESCRIPTOR_REQUEST, *PUSB_DESCRIPTOR_REQUEST;

typedef struct _USB_HUB_DESCRIPTOR {
	UCHAR  bDescriptorLength;
	UCHAR  bDescriptorType;
	UCHAR  bNumberOfPorts;
	USHORT  wHubCharacteristics;
	UCHAR  bPowerOnToPowerGood;
	UCHAR  bHubControlCurrent;
	UCHAR  bRemoveAndPowerMask[64];
} USB_HUB_DESCRIPTOR, *PUSB_HUB_DESCRIPTOR;

typedef struct _USB_ROOT_HUB_NAME {
	ULONG  ActualLength;
	WCHAR  RootHubName[1];
} USB_ROOT_HUB_NAME, *PUSB_ROOT_HUB_NAME;

typedef struct _USB_ROOT_HUB_NAME_FIXED {
	ULONG ActualLength;
	WCHAR RootHubName[MAX_PATH_LENGTH];
} USB_ROOT_HUB_NAME_FIXED;

typedef struct _USB_NODE_CONNECTION_NAME {
	ULONG  ConnectionIndex;
	ULONG  ActualLength;
	WCHAR  NodeName[1];
} USB_NODE_CONNECTION_NAME, *PUSB_NODE_CONNECTION_NAME;

typedef struct _USB_NODE_CONNECTION_NAME_FIXED {
	ULONG ConnectionIndex;
	ULONG ActualLength;
	WCHAR NodeName[MAX_PATH_LENGTH];
} USB_NODE_CONNECTION_NAME_FIXED;

typedef struct _USB_HUB_NAME_FIXED {
	union {
		USB_ROOT_HUB_NAME_FIXED root;
		USB_NODE_CONNECTION_NAME_FIXED node;
	} u;
} USB_HUB_NAME_FIXED;


typedef struct _USB_HUB_INFORMATION {
	USB_HUB_DESCRIPTOR  HubDescriptor;
	BOOLEAN  HubIsBusPowered;
} USB_HUB_INFORMATION, *PUSB_HUB_INFORMATION;

typedef struct _USB_MI_PARENT_INFORMATION {
  ULONG  NumberOfInterfaces;
} USB_MI_PARENT_INFORMATION, *PUSB_MI_PARENT_INFORMATION;

typedef struct _USB_NODE_INFORMATION {
	USB_HUB_NODE  NodeType;
	union {
		USB_HUB_INFORMATION  HubInformation;
		USB_MI_PARENT_INFORMATION  MiParentInformation;
	} u;
} USB_NODE_INFORMATION, *PUSB_NODE_INFORMATION;

typedef struct _USB_PIPE_INFO {
	USB_ENDPOINT_DESCRIPTOR  EndpointDescriptor;
	ULONG  ScheduleOffset;
} USB_PIPE_INFO, *PUSB_PIPE_INFO;

typedef struct _USB_NODE_CONNECTION_INFORMATION {
	ULONG  ConnectionIndex;
	USB_DEVICE_DESCRIPTOR  DeviceDescriptor;
	UCHAR  CurrentConfigurationValue;
	BOOLEAN  LowSpeed;
	BOOLEAN  DeviceIsHub;
	USHORT  DeviceAddress;
	ULONG  NumberOfOpenPipes;
	USB_CONNECTION_STATUS  ConnectionStatus;
//	USB_PIPE_INFO  PipeList[0];
} USB_NODE_CONNECTION_INFORMATION, *PUSB_NODE_CONNECTION_INFORMATION;

typedef union _USB_HUB_CAP_FLAGS {
	ULONG ul;
	struct {
		ULONG HubIsHighSpeedCapable:1;
		ULONG HubIsHighSpeed:1;
		ULONG HubIsMultiTtCapable:1;
		ULONG HubIsMultiTt:1;
		ULONG HubIsRoot:1;
		ULONG HubIsArmedWakeOnConnect:1;
		ULONG ReservedMBZ:26;
	};
} USB_HUB_CAP_FLAGS, *PUSB_HUB_CAP_FLAGS;

typedef struct _USB_HUB_CAPABILITIES {
  ULONG  HubIs2xCapable : 1;
} USB_HUB_CAPABILITIES, *PUSB_HUB_CAPABILITIES;

typedef struct _USB_HUB_CAPABILITIES_EX {
	USB_HUB_CAP_FLAGS CapabilityFlags;
} USB_HUB_CAPABILITIES_EX, *PUSB_HUB_CAPABILITIES_EX;

#pragma pack(pop)


/*
 * API macros - from libusb-win32 1.x
 */

#define DLL_DECLARE(api, ret, name, args)                    \
  typedef ret (api * __dll_##name##_t)args; __dll_##name##_t name

#define DLL_LOAD(dll, name, ret_on_failure)                   \
  do {                                                        \
  HMODULE h = GetModuleHandle(#dll);                          \
  if(!h)                                                      \
    h = LoadLibrary(#dll);                                    \
  if(!h) {                                                    \
    if(ret_on_failure)                                        \
      return LIBUSB_ERROR_OTHER;                             \
    else break; }                                             \
  if((name = (__dll_##name##_t)GetProcAddress(h, #name)))     \
    break;                                                    \
  if((name = (__dll_##name##_t)GetProcAddress(h, #name "A"))) \
    break;                                                    \
  if((name = (__dll_##name##_t)GetProcAddress(h, #name "W"))) \
    break;                                                    \
  if(ret_on_failure)                                          \
    return LIBUSB_ERROR_OTHER;                               \
  } while(0)


/* winusb.dll interface */

#define SHORT_PACKET_TERMINATE  0x01
#define AUTO_CLEAR_STALL        0x02
#define PIPE_TRANSFER_TIMEOUT   0x03
#define IGNORE_SHORT_PACKETS    0x04
#define ALLOW_PARTIAL_READS     0x05
#define AUTO_FLUSH              0x06
#define RAW_IO                  0x07
#define MAXIMUM_TRANSFER_SIZE   0x08
#define AUTO_SUSPEND            0x81
#define SUSPEND_DELAY           0x83
#define DEVICE_SPEED            0x01
#define LowSpeed                0x01
#define FullSpeed               0x02
#define HighSpeed               0x03 

typedef enum _USBD_PIPE_TYPE {
	UsbdPipeTypeControl,
	UsbdPipeTypeIsochronous,
	UsbdPipeTypeBulk,
	UsbdPipeTypeInterrupt
} USBD_PIPE_TYPE;

typedef struct {
  USBD_PIPE_TYPE PipeType;
  UCHAR          PipeId;
  USHORT         MaximumPacketSize;
  UCHAR          Interval;
} WINUSB_PIPE_INFORMATION, *PWINUSB_PIPE_INFORMATION;

#pragma pack(1)
typedef struct {
  UCHAR  request_type;
  UCHAR  request;
  USHORT value;
  USHORT index;
  USHORT length;
} WINUSB_SETUP_PACKET, *PWINUSB_SETUP_PACKET;
#pragma pack()

typedef void *WINUSB_INTERFACE_HANDLE, *PWINUSB_INTERFACE_HANDLE;

DLL_DECLARE(WINAPI, BOOL, WinUsb_Initialize, (HANDLE, PWINUSB_INTERFACE_HANDLE));
DLL_DECLARE(WINAPI, BOOL, WinUsb_Free, (WINUSB_INTERFACE_HANDLE));
DLL_DECLARE(WINAPI, BOOL, WinUsb_GetAssociatedInterface, (WINUSB_INTERFACE_HANDLE, UCHAR, PWINUSB_INTERFACE_HANDLE));
DLL_DECLARE(WINAPI, BOOL, WinUsb_GetDescriptor, (WINUSB_INTERFACE_HANDLE, UCHAR, UCHAR, USHORT, PUCHAR, ULONG, PULONG));
DLL_DECLARE(WINAPI, BOOL, WinUsb_QueryInterfaceSettings, (WINUSB_INTERFACE_HANDLE, UCHAR, PUSB_INTERFACE_DESCRIPTOR));
DLL_DECLARE(WINAPI, BOOL, WinUsb_QueryDeviceInformation, (WINUSB_INTERFACE_HANDLE, ULONG, PULONG, PVOID));
DLL_DECLARE(WINAPI, BOOL, WinUsb_SetCurrentAlternateSetting, (WINUSB_INTERFACE_HANDLE, UCHAR));
DLL_DECLARE(WINAPI, BOOL, WinUsb_GetCurrentAlternateSetting, (WINUSB_INTERFACE_HANDLE, PUCHAR));
DLL_DECLARE(WINAPI, BOOL, WinUsb_QueryPipe, (WINUSB_INTERFACE_HANDLE, UCHAR, UCHAR, PWINUSB_PIPE_INFORMATION));
DLL_DECLARE(WINAPI, BOOL, WinUsb_SetPipePolicy, (WINUSB_INTERFACE_HANDLE, UCHAR, ULONG, ULONG, PVOID));
DLL_DECLARE(WINAPI, BOOL, WinUsb_GetPipePolicy, (WINUSB_INTERFACE_HANDLE, UCHAR, ULONG, PULONG, PVOID));
DLL_DECLARE(WINAPI, BOOL, WinUsb_ReadPipe, (WINUSB_INTERFACE_HANDLE, UCHAR, PUCHAR, ULONG, PULONG, LPOVERLAPPED));
DLL_DECLARE(WINAPI, BOOL, WinUsb_WritePipe, (WINUSB_INTERFACE_HANDLE, UCHAR, PUCHAR, ULONG, PULONG, LPOVERLAPPED));
DLL_DECLARE(WINAPI, BOOL, WinUsb_ControlTransfer, (WINUSB_INTERFACE_HANDLE, WINUSB_SETUP_PACKET, PUCHAR, ULONG, PULONG, LPOVERLAPPED));
DLL_DECLARE(WINAPI, BOOL, WinUsb_ResetPipe, (WINUSB_INTERFACE_HANDLE, UCHAR));
DLL_DECLARE(WINAPI, BOOL, WinUsb_AbortPipe, (WINUSB_INTERFACE_HANDLE, UCHAR));
DLL_DECLARE(WINAPI, BOOL, WinUsb_FlushPipe, (WINUSB_INTERFACE_HANDLE, UCHAR));

/* hid.dll interface */

#define HIDP_STATUS_SUCCESS  0x110000
typedef void* PHIDP_PREPARSED_DATA;

#pragma pack(1)
typedef struct {
	ULONG Size; 
	USHORT VendorID;
	USHORT ProductID;
	USHORT VersionNumber;
} HIDD_ATTRIBUTES, *PHIDD_ATTRIBUTES;
#pragma pack()

typedef USHORT USAGE;
typedef struct {
  USAGE Usage;
  USAGE UsagePage;
  USHORT InputReportByteLength;
  USHORT OutputReportByteLength;
  USHORT FeatureReportByteLength;
  USHORT Reserved[17];
  USHORT NumberLinkCollectionNodes;
  USHORT NumberInputButtonCaps;
  USHORT NumberInputValueCaps;
  USHORT NumberInputDataIndices;
  USHORT NumberOutputButtonCaps;
  USHORT NumberOutputValueCaps;
  USHORT NumberOutputDataIndices;
  USHORT NumberFeatureButtonCaps;
  USHORT NumberFeatureValueCaps;
  USHORT NumberFeatureDataIndices;
} HIDP_CAPS, *PHIDP_CAPS;

DLL_DECLARE(WINAPI, BOOL, HidD_GetAttributes, (HANDLE, PHIDD_ATTRIBUTES));
DLL_DECLARE(WINAPI, VOID, HidD_GetHidGuid, (LPGUID));
DLL_DECLARE(WINAPI, BOOL, HidD_GetPreparsedData, (HANDLE, PHIDP_PREPARSED_DATA *));
DLL_DECLARE(WINAPI, BOOL, HidD_FreePreparsedData, (PHIDP_PREPARSED_DATA));
DLL_DECLARE(WINAPI, BOOL, HidD_GetManufacturerString, (HANDLE, PVOID, ULONG));
DLL_DECLARE(WINAPI, BOOL, HidD_GetProductString, (HANDLE, PVOID, ULONG));
DLL_DECLARE(WINAPI, BOOL, HidD_GetSerialNumberString, (HANDLE, PVOID, ULONG));
DLL_DECLARE(WINAPI, LONG, HidP_GetCaps, (PHIDP_PREPARSED_DATA, PHIDP_CAPS));
DLL_DECLARE(WINAPI, BOOL, HidD_SetNumInputBuffers, (HANDLE, ULONG));
DLL_DECLARE(WINAPI, BOOL, HidD_SetFeature, (HANDLE, PVOID, ULONG));
DLL_DECLARE(WINAPI, BOOL, HidD_GetFeature, (HANDLE, PVOID, ULONG));
DLL_DECLARE(WINAPI, BOOL, HidD_GetPhysicalDescriptor, (HANDLE, PVOID, ULONG));
DLL_DECLARE(WINAPI, BOOL, HidD_GetInputReport, (HANDLE, PVOID, ULONG));
DLL_DECLARE(WINAPI, BOOL, HidD_SetOutputReport, (HANDLE, PVOID, ULONG));
DLL_DECLARE(WINAPI, BOOL, HidD_FlushQueue, (HANDLE));