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hidapi.c
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#ifdef _WIN32
/*******************************************************
HIDAPI - Multi-Platform library for
communication with HID devices.
Alan Ott
Signal 11 Software
libusb/hidapi Team
Copyright 2022, All Rights Reserved.
At the discretion of the user of this library,
this software may be licensed under the terms of the
GNU General Public License v3, a BSD-Style license, or the
original HIDAPI license as outlined in the LICENSE.txt,
LICENSE-gpl3.txt, LICENSE-bsd.txt, and LICENSE-orig.txt
files located at the root of the source distribution.
These files may also be found in the public source
code repository located at:
https://github.com/libusb/hidapi .
********************************************************/
#if defined(_MSC_VER) && !defined(_CRT_SECURE_NO_WARNINGS)
/* Do not warn about wcsncpy usage.
https://docs.microsoft.com/cpp/c-runtime-library/security-features-in-the-crt */
#define _CRT_SECURE_NO_WARNINGS
#endif
#ifdef __cplusplus
extern "C" {
#endif
#include <windows.h>
#ifndef _NTDEF_
typedef LONG NTSTATUS;
#endif
#ifdef __MINGW32__
#include <ntdef.h>
#include <winbase.h>
#define WC_ERR_INVALID_CHARS 0x00000080
#endif
#ifdef __CYGWIN__
#include <ntdef.h>
#include <wctype.h>
#define _wcsdup wcsdup
#endif
/*#define HIDAPI_USE_DDK*/
typedef USHORT USAGE;
#ifdef HIDAPI_USE_DDK
#include <cfgmgr32.h>
#include <initguid.h>
#include <devpkey.h>
#include <propkey.h>
#include <hidpi.h>
#include <hidsdi.h>
#else
/* This part of the header mimics cfgmgr32.h,
but only what is used by HIDAPI */
#define INITGUID
#ifdef __TINYC__
#define WC_ERR_INVALID_CHARS 0x00000080 // error for invalid chars
typedef struct _tagpropertykey {
GUID fmtid;
DWORD pid;
} PROPERTYKEY;
typedef WCHAR *PZZWSTR, *PUZZWSTR;
#ifndef _DEVPROPDEF_H_
#define _DEVPROPDEF_H_
typedef ULONG DEVPROPTYPE, *PDEVPROPTYPE;
#define DEVPROP_TYPEMOD_ARRAY 0x00001000
#define DEVPROP_TYPEMOD_LIST 0x00002000
#define DEVPROP_TYPE_EMPTY 0x00000000
#define DEVPROP_TYPE_NULL 0x00000001
#define DEVPROP_TYPE_SBYTE 0x00000002
#define DEVPROP_TYPE_BYTE 0x00000003
#define DEVPROP_TYPE_INT16 0x00000004
#define DEVPROP_TYPE_UINT16 0x00000005
#define DEVPROP_TYPE_INT32 0x00000006
#define DEVPROP_TYPE_UINT32 0x00000007
#define DEVPROP_TYPE_INT64 0x00000008
#define DEVPROP_TYPE_UINT64 0x00000009
#define DEVPROP_TYPE_FLOAT 0x0000000A
#define DEVPROP_TYPE_DOUBLE 0x0000000B
#define DEVPROP_TYPE_DECIMAL 0x0000000C
#define DEVPROP_TYPE_GUID 0x0000000D
#define DEVPROP_TYPE_CURRENCY 0x0000000E
#define DEVPROP_TYPE_DATE 0x0000000F
#define DEVPROP_TYPE_FILETIME 0x00000010
#define DEVPROP_TYPE_BOOLEAN 0x00000011
#define DEVPROP_TYPE_STRING 0x00000012
#define DEVPROP_TYPE_STRING_LIST (DEVPROP_TYPE_STRING|DEVPROP_TYPEMOD_LIST)
#define DEVPROP_TYPE_SECURITY_DESCRIPTOR 0x00000013
#define DEVPROP_TYPE_SECURITY_DESCRIPTOR_STRING 0x00000014
#define DEVPROP_TYPE_DEVPROPKEY 0x00000015
#define DEVPROP_TYPE_DEVPROPTYPE 0x00000016
#define DEVPROP_TYPE_BINARY (DEVPROP_TYPE_BYTE|DEVPROP_TYPEMOD_ARRAY)
#define DEVPROP_TYPE_ERROR 0x00000017
#define DEVPROP_TYPE_NTSTATUS 0x00000018
#define DEVPROP_TYPE_STRING_INDIRECT 0x00000019
#define MAX_DEVPROP_TYPE 0x00000019
#define MAX_DEVPROP_TYPEMOD 0x00002000
#define DEVPROP_MASK_TYPE 0x00000FFF
#define DEVPROP_MASK_TYPEMOD 0x0000F000
typedef CHAR DEVPROP_BOOLEAN, *PDEVPROP_BOOLEAN;
#define DEVPROP_TRUE ((DEVPROP_BOOLEAN)-1)
#define DEVPROP_FALSE ((DEVPROP_BOOLEAN) 0)
#ifndef DEVPROPKEY_DEFINED
#define DEVPROPKEY_DEFINED
typedef GUID DEVPROPGUID, *PDEVPROPGUID;
typedef ULONG DEVPROPID, *PDEVPROPID;
typedef struct _DEVPROPKEY {
DEVPROPGUID fmtid;
DEVPROPID pid;
} DEVPROPKEY, *PDEVPROPKEY;
#endif /* DEVPROPKEY_DEFINED */
#define DEVPROPID_FIRST_USABLE 2
#endif /* _DEVPROPDEF_H_ */
#ifdef DEFINE_DEVPROPKEY
#undef DEFINE_DEVPROPKEY
#endif
#ifdef INITGUID
#ifdef __cplusplus
#define DEFINE_DEVPROPKEY(name, l, w1, w2, b1, b2, b3, b4, b5, b6, b7, b8, pid) EXTERN_C const DEVPROPKEY DECLSPEC_SELECTANY name = {{ l, w1, w2, {b1, b2, b3, b4, b5, b6, b7, b8}}, pid}
#else
#define DEFINE_DEVPROPKEY(name, l, w1, w2, b1, b2, b3, b4, b5, b6, b7, b8, pid) const DEVPROPKEY DECLSPEC_SELECTANY name = {{ l, w1, w2, {b1, b2, b3, b4, b5, b6, b7, b8}}, pid}
#endif
#else
#define DEFINE_DEVPROPKEY(name, l, w1, w2, b1, b2, b3, b4, b5, b6, b7, b8, pid) EXTERN_C const DEVPROPKEY name
#endif /* INITGUID */
#ifndef IsEqualDevPropKey
#ifdef __cplusplus
#define IsEqualDevPropKey(a, b) (((a).pid == (b).pid) && IsEqualIID((a).fmtid, (b).fmtid))
#else
#define IsEqualDevPropKey(a, b) (((a).pid == (b).pid) && IsEqualIID(&(a).fmtid, &(b).fmtid))
#endif
#endif /* !IsEqualDevPropKey */
#if !defined(PID_FIRST_USABLE)
#define PID_FIRST_USABLE 2
#endif
/* See the definitions of PROPERTYKEY in wtypes.h, and GUID in guiddef.h. "l" is short for "long", "w" for "word", "b" for "byte", and "pid" for "property identifier". */
#undef DEFINE_PROPERTYKEY
#if defined(INITGUID) && defined(__cplusplus)
#define DEFINE_PROPERTYKEY(name,l,w1,w2,b1,b2,b3,b4,b5,b6,b7,b8,pid) EXTERN_C const PROPERTYKEY DECLSPEC_SELECTANY name = {{l,w1,w2,{b1,b2,b3,b4,b5,b6,b7,b8}},pid}
#elif defined(INITGUID) && !defined(__cplusplus)
#define DEFINE_PROPERTYKEY(name,l,w1,w2,b1,b2,b3,b4,b5,b6,b7,b8,pid) const PROPERTYKEY DECLSPEC_SELECTANY name = {{l,w1,w2,{b1,b2,b3,b4,b5,b6,b7,b8}},pid}
#else
#define DEFINE_PROPERTYKEY(name,l,w1,w2,b1,b2,b3,b4,b5,b6,b7,b8,pid) EXTERN_C const PROPERTYKEY name
#endif
/* This implementation differs from the Windows SDK in order to correctly match the type of REFGUID used in `IsEqualIID()` (defined in guiddef.h) when __cplusplus is not defined. */
#if !defined(IsEqualPropertyKey) && defined(__cplusplus)
#define IsEqualPropertyKey(a,b) (((a).pid == (b).pid) && IsEqualIID( (a).fmtid, (b).fmtid))
#elif !defined(IsEqualPropertyKey) && !defined(__cplusplus)
#define IsEqualPropertyKey(a,b) (((a).pid == (b).pid) && IsEqualIID(&(a).fmtid, &(b).fmtid))
#endif
#if !defined(REFPROPERTYKEY) && defined(__cplusplus)
#define REFPROPERTYKEY const PROPERTYKEY &
#elif !defined(REFPROPERTYKEY) && !defined(__cplusplus)
#define REFPROPERTYKEY const PROPERTYKEY * __MIDL_CONST
#endif
#if !defined(_PROPERTYKEY_EQUALITY_OPERATORS_)
#define _PROPERTYKEY_EQUALITY_OPERATORS_
#if defined(__cplusplus)
extern "C++"
{
inline bool operator == (REFPROPERTYKEY k0, REFPROPERTYKEY k1) { return IsEqualPropertyKey(k0, k1); }
inline bool operator != (REFPROPERTYKEY k0, REFPROPERTYKEY k1) { return !IsEqualPropertyKey(k0, k1); }
}
#endif
#endif
#else // !__TINYC__
#include <devpropdef.h>
#include <propkeydef.h>
#endif
/* This part of the header mimics hidpi.h,
but only what is used by HIDAPI */
typedef enum _HIDP_REPORT_TYPE
{
HidP_Input,
HidP_Output,
HidP_Feature
} HIDP_REPORT_TYPE;
typedef struct _HIDP_PREPARSED_DATA * PHIDP_PREPARSED_DATA;
typedef struct _HIDP_CAPS
{
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;
#define HIDP_STATUS_SUCCESS 0x00110000
#define HIDP_STATUS_INVALID_PREPARSED_DATA 0xc0110001
typedef NTSTATUS (__stdcall *HidP_GetCaps_)(PHIDP_PREPARSED_DATA preparsed_data, PHIDP_CAPS caps);
typedef DWORD RETURN_TYPE;
typedef RETURN_TYPE CONFIGRET;
typedef DWORD DEVNODE, DEVINST;
typedef DEVNODE* PDEVNODE, * PDEVINST;
typedef WCHAR* DEVNODEID_W, * DEVINSTID_W;
#define CR_SUCCESS (0x00000000)
#define CR_BUFFER_SMALL (0x0000001A)
#define CR_FAILURE (0x00000013)
#define CM_LOCATE_DEVNODE_NORMAL 0x00000000
#define CM_GET_DEVICE_INTERFACE_LIST_PRESENT (0x00000000)
typedef CONFIGRET(__stdcall* CM_Locate_DevNodeW_)(PDEVINST pdnDevInst, DEVINSTID_W pDeviceID, ULONG ulFlags);
typedef CONFIGRET(__stdcall* CM_Get_Parent_)(PDEVINST pdnDevInst, DEVINST dnDevInst, ULONG ulFlags);
typedef CONFIGRET(__stdcall* CM_Get_DevNode_PropertyW_)(DEVINST dnDevInst, CONST DEVPROPKEY* PropertyKey, DEVPROPTYPE* PropertyType, PBYTE PropertyBuffer, PULONG PropertyBufferSize, ULONG ulFlags);
typedef CONFIGRET(__stdcall* CM_Get_Device_Interface_PropertyW_)(LPCWSTR pszDeviceInterface, CONST DEVPROPKEY* PropertyKey, DEVPROPTYPE* PropertyType, PBYTE PropertyBuffer, PULONG PropertyBufferSize, ULONG ulFlags);
typedef CONFIGRET(__stdcall* CM_Get_Device_Interface_List_SizeW_)(PULONG pulLen, LPGUID InterfaceClassGuid, DEVINSTID_W pDeviceID, ULONG ulFlags);
typedef CONFIGRET(__stdcall* CM_Get_Device_Interface_ListW_)(LPGUID InterfaceClassGuid, DEVINSTID_W pDeviceID, PZZWSTR Buffer, ULONG BufferLen, ULONG ulFlags);
// from devpkey.h
DEFINE_DEVPROPKEY(DEVPKEY_NAME, 0xb725f130, 0x47ef, 0x101a, 0xa5, 0xf1, 0x02, 0x60, 0x8c, 0x9e, 0xeb, 0xac, 10); // DEVPROP_TYPE_STRING
DEFINE_DEVPROPKEY(DEVPKEY_Device_Manufacturer, 0xa45c254e, 0xdf1c, 0x4efd, 0x80, 0x20, 0x67, 0xd1, 0x46, 0xa8, 0x50, 0xe0, 13); // DEVPROP_TYPE_STRING
DEFINE_DEVPROPKEY(DEVPKEY_Device_InstanceId, 0x78c34fc8, 0x104a, 0x4aca, 0x9e, 0xa4, 0x52, 0x4d, 0x52, 0x99, 0x6e, 0x57, 256); // DEVPROP_TYPE_STRING
DEFINE_DEVPROPKEY(DEVPKEY_Device_HardwareIds, 0xa45c254e, 0xdf1c, 0x4efd, 0x80, 0x20, 0x67, 0xd1, 0x46, 0xa8, 0x50, 0xe0, 3); // DEVPROP_TYPE_STRING_LIST
DEFINE_DEVPROPKEY(DEVPKEY_Device_CompatibleIds, 0xa45c254e, 0xdf1c, 0x4efd, 0x80, 0x20, 0x67, 0xd1, 0x46, 0xa8, 0x50, 0xe0, 4); // DEVPROP_TYPE_STRING_LIST
DEFINE_DEVPROPKEY(DEVPKEY_Device_ContainerId, 0x8c7ed206, 0x3f8a, 0x4827, 0xb3, 0xab, 0xae, 0x9e, 0x1f, 0xae, 0xfc, 0x6c, 2); // DEVPROP_TYPE_GUID
// from propkey.h
DEFINE_PROPERTYKEY(PKEY_DeviceInterface_Bluetooth_DeviceAddress, 0x2BD67D8B, 0x8BEB, 0x48D5, 0x87, 0xE0, 0x6C, 0xDA, 0x34, 0x28, 0x04, 0x0A, 1); // DEVPROP_TYPE_STRING
DEFINE_PROPERTYKEY(PKEY_DeviceInterface_Bluetooth_Manufacturer, 0x2BD67D8B, 0x8BEB, 0x48D5, 0x87, 0xE0, 0x6C, 0xDA, 0x34, 0x28, 0x04, 0x0A, 4); // DEVPROP_TYPE_STRING
DEFINE_PROPERTYKEY(PKEY_DeviceInterface_Bluetooth_ModelNumber, 0x2BD67D8B, 0x8BEB, 0x48D5, 0x87, 0xE0, 0x6C, 0xDA, 0x34, 0x28, 0x04, 0x0A, 5); // DEVPROP_TYPE_STRING
#define HID_OUT_CTL_CODE(id) CTL_CODE(FILE_DEVICE_KEYBOARD, (id), METHOD_OUT_DIRECT, FILE_ANY_ACCESS)
#define IOCTL_HID_GET_FEATURE HID_OUT_CTL_CODE(100)
#define IOCTL_HID_GET_INPUT_REPORT HID_OUT_CTL_CODE(104)
#include "hidapi.h"
typedef struct _HIDD_ATTRIBUTES{
ULONG Size;
USHORT VendorID;
USHORT ProductID;
USHORT VersionNumber;
} HIDD_ATTRIBUTES, *PHIDD_ATTRIBUTES;
typedef void (__stdcall *HidD_GetHidGuid_)(LPGUID hid_guid);
typedef BOOLEAN (__stdcall *HidD_GetAttributes_)(HANDLE device, PHIDD_ATTRIBUTES attrib);
typedef BOOLEAN (__stdcall *HidD_GetSerialNumberString_)(HANDLE device, PVOID buffer, ULONG buffer_len);
typedef BOOLEAN (__stdcall *HidD_GetManufacturerString_)(HANDLE handle, PVOID buffer, ULONG buffer_len);
typedef BOOLEAN (__stdcall *HidD_GetProductString_)(HANDLE handle, PVOID buffer, ULONG buffer_len);
typedef BOOLEAN (__stdcall *HidD_SetFeature_)(HANDLE handle, PVOID data, ULONG length);
typedef BOOLEAN (__stdcall *HidD_GetFeature_)(HANDLE handle, PVOID data, ULONG length);
typedef BOOLEAN (__stdcall* HidD_SetOutputReport_)(HANDLE handle, PVOID data, ULONG length);
typedef BOOLEAN (__stdcall *HidD_GetInputReport_)(HANDLE handle, PVOID data, ULONG length);
typedef BOOLEAN (__stdcall *HidD_GetIndexedString_)(HANDLE handle, ULONG string_index, PVOID buffer, ULONG buffer_len);
typedef BOOLEAN (__stdcall *HidD_GetPreparsedData_)(HANDLE handle, PHIDP_PREPARSED_DATA *preparsed_data);
typedef BOOLEAN (__stdcall *HidD_FreePreparsedData_)(PHIDP_PREPARSED_DATA preparsed_data);
typedef BOOLEAN (__stdcall *HidD_SetNumInputBuffers_)(HANDLE handle, ULONG number_buffers);
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#ifdef MIN
#undef MIN
#endif
#define MIN(x,y) ((x) < (y)? (x): (y))
/* MAXIMUM_USB_STRING_LENGTH from usbspec.h is 255 */
/* BLUETOOTH_DEVICE_NAME_SIZE from bluetoothapis.h is 256 */
#define MAX_STRING_WCHARS 256
/* For certain USB devices, using a buffer larger or equal to 127 wchars results
in successful completion of HID API functions, but a broken string is stored
in the output buffer. This behaviour persists even if HID API is bypassed and
HID IOCTLs are passed to the HID driver directly. Therefore, for USB devices,
the buffer MUST NOT exceed 126 WCHARs.
*/
#define MAX_STRING_WCHARS_USB 126
static struct hid_api_version api_version = {
.major = HID_API_VERSION_MAJOR,
.minor = HID_API_VERSION_MINOR,
.patch = HID_API_VERSION_PATCH
};
#ifndef HIDAPI_USE_DDK
/* Since we're not building with the DDK, and the HID header
files aren't part of the Windows SDK, we define what we need ourselves.
In lookup_functions(), the function pointers
defined below are set. */
static HidD_GetHidGuid_ HidD_GetHidGuid;
static HidD_GetAttributes_ HidD_GetAttributes;
static HidD_GetSerialNumberString_ HidD_GetSerialNumberString;
static HidD_GetManufacturerString_ HidD_GetManufacturerString;
static HidD_GetProductString_ HidD_GetProductString;
static HidD_SetFeature_ HidD_SetFeature;
static HidD_GetFeature_ HidD_GetFeature;
static HidD_SetOutputReport_ HidD_SetOutputReport;
static HidD_GetInputReport_ HidD_GetInputReport;
static HidD_GetIndexedString_ HidD_GetIndexedString;
static HidD_GetPreparsedData_ HidD_GetPreparsedData;
static HidD_FreePreparsedData_ HidD_FreePreparsedData;
static HidP_GetCaps_ HidP_GetCaps;
static HidD_SetNumInputBuffers_ HidD_SetNumInputBuffers;
static CM_Locate_DevNodeW_ CM_Locate_DevNodeW = NULL;
static CM_Get_Parent_ CM_Get_Parent = NULL;
static CM_Get_DevNode_PropertyW_ CM_Get_DevNode_PropertyW = NULL;
static CM_Get_Device_Interface_PropertyW_ CM_Get_Device_Interface_PropertyW = NULL;
static CM_Get_Device_Interface_List_SizeW_ CM_Get_Device_Interface_List_SizeW = NULL;
static CM_Get_Device_Interface_ListW_ CM_Get_Device_Interface_ListW = NULL;
static HMODULE hid_lib_handle = NULL;
static HMODULE cfgmgr32_lib_handle = NULL;
static BOOLEAN hidapi_initialized = FALSE;
static void free_library_handles()
{
if (hid_lib_handle)
FreeLibrary(hid_lib_handle);
hid_lib_handle = NULL;
if (cfgmgr32_lib_handle)
FreeLibrary(cfgmgr32_lib_handle);
cfgmgr32_lib_handle = NULL;
}
static int lookup_functions()
{
hid_lib_handle = LoadLibraryW(L"hid.dll");
if (hid_lib_handle == NULL) {
goto err;
}
cfgmgr32_lib_handle = LoadLibraryW(L"cfgmgr32.dll");
if (cfgmgr32_lib_handle == NULL) {
goto err;
}
#if defined(__GNUC__)
# pragma GCC diagnostic push
# pragma GCC diagnostic ignored "-Wcast-function-type"
#endif
#define RESOLVE(lib_handle, x) x = (x##_)GetProcAddress(lib_handle, #x); if (!x) goto err;
RESOLVE(hid_lib_handle, HidD_GetHidGuid);
RESOLVE(hid_lib_handle, HidD_GetAttributes);
RESOLVE(hid_lib_handle, HidD_GetSerialNumberString);
RESOLVE(hid_lib_handle, HidD_GetManufacturerString);
RESOLVE(hid_lib_handle, HidD_GetProductString);
RESOLVE(hid_lib_handle, HidD_SetFeature);
RESOLVE(hid_lib_handle, HidD_GetFeature);
RESOLVE(hid_lib_handle, HidD_SetOutputReport);
RESOLVE(hid_lib_handle, HidD_GetInputReport);
RESOLVE(hid_lib_handle, HidD_GetIndexedString);
RESOLVE(hid_lib_handle, HidD_GetPreparsedData);
RESOLVE(hid_lib_handle, HidD_FreePreparsedData);
RESOLVE(hid_lib_handle, HidP_GetCaps);
RESOLVE(hid_lib_handle, HidD_SetNumInputBuffers);
RESOLVE(cfgmgr32_lib_handle, CM_Locate_DevNodeW);
RESOLVE(cfgmgr32_lib_handle, CM_Get_Parent);
RESOLVE(cfgmgr32_lib_handle, CM_Get_DevNode_PropertyW);
RESOLVE(cfgmgr32_lib_handle, CM_Get_Device_Interface_PropertyW);
RESOLVE(cfgmgr32_lib_handle, CM_Get_Device_Interface_List_SizeW);
RESOLVE(cfgmgr32_lib_handle, CM_Get_Device_Interface_ListW);
#undef RESOLVE
#if defined(__GNUC__)
# pragma GCC diagnostic pop
#endif
return 0;
err:
free_library_handles();
return -1;
}
#endif /* HIDAPI_USE_DDK */
struct hid_device_ {
HANDLE device_handle;
BOOL blocking;
USHORT output_report_length;
unsigned char *write_buf;
size_t input_report_length;
USHORT feature_report_length;
unsigned char *feature_buf;
wchar_t *last_error_str;
BOOL read_pending;
char *read_buf;
OVERLAPPED ol;
OVERLAPPED write_ol;
struct hid_device_info* device_info;
DWORD write_timeout_ms;
};
static hid_device *new_hid_device()
{
hid_device *dev = (hid_device*) calloc(1, sizeof(hid_device));
if (dev == NULL) {
return NULL;
}
dev->device_handle = INVALID_HANDLE_VALUE;
dev->blocking = TRUE;
dev->output_report_length = 0;
dev->write_buf = NULL;
dev->input_report_length = 0;
dev->feature_report_length = 0;
dev->feature_buf = NULL;
dev->last_error_str = NULL;
dev->read_pending = FALSE;
dev->read_buf = NULL;
memset(&dev->ol, 0, sizeof(dev->ol));
dev->ol.hEvent = CreateEvent(NULL, FALSE, FALSE /*initial state f=nonsignaled*/, NULL);
memset(&dev->write_ol, 0, sizeof(dev->write_ol));
dev->write_ol.hEvent = CreateEvent(NULL, FALSE, FALSE /*initial state f=nonsignaled*/, NULL);
dev->device_info = NULL;
dev->write_timeout_ms = 1000;
return dev;
}
static void free_hid_device(hid_device *dev)
{
CloseHandle(dev->ol.hEvent);
CloseHandle(dev->write_ol.hEvent);
CloseHandle(dev->device_handle);
free(dev->last_error_str);
dev->last_error_str = NULL;
free(dev->write_buf);
free(dev->feature_buf);
free(dev->read_buf);
hid_free_enumeration(dev->device_info);
free(dev);
}
static void register_winapi_error_to_buffer(wchar_t **error_buffer, const WCHAR *op)
{
free(*error_buffer);
*error_buffer = NULL;
/* Only clear out error messages if NULL is passed into op */
if (!op) {
return;
}
WCHAR system_err_buf[1024];
DWORD error_code = GetLastError();
DWORD system_err_len = FormatMessageW(
FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
NULL,
error_code,
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
system_err_buf, ARRAYSIZE(system_err_buf),
NULL);
DWORD op_len = (DWORD)wcslen(op);
DWORD op_prefix_len =
op_len
+ 15 /*: (0x00000000) */
;
DWORD msg_len =
+ op_prefix_len
+ system_err_len
;
*error_buffer = (WCHAR *)calloc(msg_len + 1, sizeof (WCHAR));
WCHAR *msg = *error_buffer;
if (!msg)
return;
int printf_written = swprintf(msg, (size_t)(msg_len + 1), L"%.*ls: (0x%08X) %.*ls", (int)op_len, op, error_code, (int)system_err_len, system_err_buf);
if (printf_written < 0)
{
/* Highly unlikely */
msg[0] = L'\0';
return;
}
/* Get rid of the CR and LF that FormatMessage() sticks at the
end of the message. Thanks Microsoft! */
while(msg[msg_len-1] == L'\r' || msg[msg_len-1] == L'\n' || msg[msg_len-1] == L' ')
{
msg[msg_len-1] = L'\0';
msg_len--;
}
}
#if defined(__GNUC__)
# pragma GCC diagnostic push
# pragma GCC diagnostic ignored "-Warray-bounds"
#endif
/* A bug in GCC/mingw gives:
* error: array subscript 0 is outside array bounds of 'wchar_t *[0]' {aka 'short unsigned int *[]'} [-Werror=array-bounds]
* | free(*error_buffer);
* Which doesn't make sense in this context. */
static void register_string_error_to_buffer(wchar_t **error_buffer, const WCHAR *string_error)
{
free(*error_buffer);
*error_buffer = NULL;
if (string_error) {
*error_buffer = _wcsdup(string_error);
}
}
#if defined(__GNUC__)
# pragma GCC diagnostic pop
#endif
static void register_winapi_error(hid_device *dev, const WCHAR *op)
{
register_winapi_error_to_buffer(&dev->last_error_str, op);
}
static void register_string_error(hid_device *dev, const WCHAR *string_error)
{
register_string_error_to_buffer(&dev->last_error_str, string_error);
}
static wchar_t *last_global_error_str = NULL;
static void register_global_winapi_error(const WCHAR *op)
{
register_winapi_error_to_buffer(&last_global_error_str, op);
}
static void register_global_error(const WCHAR *string_error)
{
register_string_error_to_buffer(&last_global_error_str, string_error);
}
static HANDLE open_device(const wchar_t *path, BOOL open_rw)
{
HANDLE handle;
DWORD desired_access = (open_rw)? (GENERIC_WRITE | GENERIC_READ): 0;
DWORD share_mode = FILE_SHARE_READ|FILE_SHARE_WRITE;
handle = CreateFileW(path,
desired_access,
share_mode,
NULL,
OPEN_EXISTING,
FILE_FLAG_OVERLAPPED,/*FILE_ATTRIBUTE_NORMAL,*/
0);
return handle;
}
HID_API_EXPORT const struct hid_api_version* HID_API_CALL hid_version(void)
{
return &api_version;
}
HID_API_EXPORT const char* HID_API_CALL hid_version_str(void)
{
return HID_API_VERSION_STR;
}
int HID_API_EXPORT hid_init(void)
{
register_global_error(NULL);
#ifndef HIDAPI_USE_DDK
if (!hidapi_initialized) {
if (lookup_functions() < 0) {
register_global_winapi_error(L"resolve DLL functions");
return -1;
}
hidapi_initialized = TRUE;
}
#endif
return 0;
}
int HID_API_EXPORT hid_exit(void)
{
#ifndef HIDAPI_USE_DDK
free_library_handles();
hidapi_initialized = FALSE;
#endif
register_global_error(NULL);
return 0;
}
static void* hid_internal_get_devnode_property(DEVINST dev_node, const DEVPROPKEY* property_key, DEVPROPTYPE expected_property_type)
{
ULONG len = 0;
CONFIGRET cr;
DEVPROPTYPE property_type;
PBYTE property_value = NULL;
cr = CM_Get_DevNode_PropertyW(dev_node, property_key, &property_type, NULL, &len, 0);
if (cr != CR_BUFFER_SMALL || property_type != expected_property_type)
return NULL;
property_value = (PBYTE)calloc(len, sizeof(BYTE));
cr = CM_Get_DevNode_PropertyW(dev_node, property_key, &property_type, property_value, &len, 0);
if (cr != CR_SUCCESS) {
free(property_value);
return NULL;
}
return property_value;
}
static void* hid_internal_get_device_interface_property(const wchar_t* interface_path, const DEVPROPKEY* property_key, DEVPROPTYPE expected_property_type)
{
ULONG len = 0;
CONFIGRET cr;
DEVPROPTYPE property_type;
PBYTE property_value = NULL;
cr = CM_Get_Device_Interface_PropertyW(interface_path, property_key, &property_type, NULL, &len, 0);
if (cr != CR_BUFFER_SMALL || property_type != expected_property_type)
return NULL;
property_value = (PBYTE)calloc(len, sizeof(BYTE));
cr = CM_Get_Device_Interface_PropertyW(interface_path, property_key, &property_type, property_value, &len, 0);
if (cr != CR_SUCCESS) {
free(property_value);
return NULL;
}
return property_value;
}
static void hid_internal_towupper(wchar_t* string)
{
for (wchar_t* p = string; *p; ++p) *p = towupper(*p);
}
static int hid_internal_extract_int_token_value(wchar_t* string, const wchar_t* token)
{
int token_value;
wchar_t* startptr, * endptr;
startptr = wcsstr(string, token);
if (!startptr)
return -1;
startptr += wcslen(token);
token_value = wcstol(startptr, &endptr, 16);
if (endptr == startptr)
return -1;
return token_value;
}
static void hid_internal_get_usb_info(struct hid_device_info* dev, DEVINST dev_node)
{
wchar_t *device_id = NULL, *hardware_ids = NULL;
device_id = hid_internal_get_devnode_property(dev_node, &DEVPKEY_Device_InstanceId, DEVPROP_TYPE_STRING);
if (!device_id)
goto end;
/* Normalize to upper case */
hid_internal_towupper(device_id);
/* Check for Xbox Common Controller class (XUSB) device.
https://docs.microsoft.com/windows/win32/xinput/directinput-and-xusb-devices
https://docs.microsoft.com/windows/win32/xinput/xinput-and-directinput
*/
if (hid_internal_extract_int_token_value(device_id, L"IG_") != -1) {
/* Get devnode parent to reach out USB device. */
if (CM_Get_Parent(&dev_node, dev_node, 0) != CR_SUCCESS)
goto end;
}
/* Get the hardware ids from devnode */
hardware_ids = hid_internal_get_devnode_property(dev_node, &DEVPKEY_Device_HardwareIds, DEVPROP_TYPE_STRING_LIST);
if (!hardware_ids)
goto end;
/* Get additional information from USB device's Hardware ID
https://docs.microsoft.com/windows-hardware/drivers/install/standard-usb-identifiers
https://docs.microsoft.com/windows-hardware/drivers/usbcon/enumeration-of-interfaces-not-grouped-in-collections
*/
for (wchar_t* hardware_id = hardware_ids; *hardware_id; hardware_id += wcslen(hardware_id) + 1) {
/* Normalize to upper case */
hid_internal_towupper(hardware_id);
if (dev->release_number == 0) {
/* USB_DEVICE_DESCRIPTOR.bcdDevice value. */
int release_number = hid_internal_extract_int_token_value(hardware_id, L"REV_");
if (release_number != -1) {
dev->release_number = (unsigned short)release_number;
}
}
if (dev->interface_number == -1) {
/* USB_INTERFACE_DESCRIPTOR.bInterfaceNumber value. */
int interface_number = hid_internal_extract_int_token_value(hardware_id, L"MI_");
if (interface_number != -1) {
dev->interface_number = interface_number;
}
}
}
/* Try to get USB device manufacturer string if not provided by HidD_GetManufacturerString. */
if (wcslen(dev->manufacturer_string) == 0) {
wchar_t* manufacturer_string = hid_internal_get_devnode_property(dev_node, &DEVPKEY_Device_Manufacturer, DEVPROP_TYPE_STRING);
if (manufacturer_string) {
free(dev->manufacturer_string);
dev->manufacturer_string = manufacturer_string;
}
}
/* Try to get USB device serial number if not provided by HidD_GetSerialNumberString. */
if (wcslen(dev->serial_number) == 0) {
DEVINST usb_dev_node = dev_node;
if (dev->interface_number != -1) {
/* Get devnode parent to reach out composite parent USB device.
https://docs.microsoft.com/windows-hardware/drivers/usbcon/enumeration-of-the-composite-parent-device
*/
if (CM_Get_Parent(&usb_dev_node, dev_node, 0) != CR_SUCCESS)
goto end;
}
/* Get the device id of the USB device. */
free(device_id);
device_id = hid_internal_get_devnode_property(usb_dev_node, &DEVPKEY_Device_InstanceId, DEVPROP_TYPE_STRING);
if (!device_id)
goto end;
/* Extract substring after last '\\' of Instance ID.
For USB devices it may contain device's serial number.
https://docs.microsoft.com/windows-hardware/drivers/install/instance-ids
*/
for (wchar_t *ptr = device_id + wcslen(device_id); ptr > device_id; --ptr) {
/* Instance ID is unique only within the scope of the bus.
For USB devices it means that serial number is not available. Skip. */
if (*ptr == L'&')
break;
if (*ptr == L'\\') {
free(dev->serial_number);
dev->serial_number = _wcsdup(ptr + 1);
break;
}
}
}
/* If we can't get the interface number, it means that there is only one interface. */
if (dev->interface_number == -1)
dev->interface_number = 0;
end:
free(device_id);
free(hardware_ids);
}
/* HidD_GetProductString/HidD_GetManufacturerString/HidD_GetSerialNumberString is not working for BLE HID devices
Request this info via dev node properties instead.
https://docs.microsoft.com/answers/questions/401236/hidd-getproductstring-with-ble-hid-device.html
*/
static void hid_internal_get_ble_info(struct hid_device_info* dev, DEVINST dev_node)
{
if (wcslen(dev->manufacturer_string) == 0) {
/* Manufacturer Name String (UUID: 0x2A29) */
wchar_t* manufacturer_string = hid_internal_get_devnode_property(dev_node, (const DEVPROPKEY*)&PKEY_DeviceInterface_Bluetooth_Manufacturer, DEVPROP_TYPE_STRING);
if (manufacturer_string) {
free(dev->manufacturer_string);
dev->manufacturer_string = manufacturer_string;
}
}
if (wcslen(dev->serial_number) == 0) {
/* Serial Number String (UUID: 0x2A25) */
wchar_t* serial_number = hid_internal_get_devnode_property(dev_node, (const DEVPROPKEY*)&PKEY_DeviceInterface_Bluetooth_DeviceAddress, DEVPROP_TYPE_STRING);
if (serial_number) {
free(dev->serial_number);
dev->serial_number = serial_number;
}
}
if (wcslen(dev->product_string) == 0) {
/* Model Number String (UUID: 0x2A24) */
wchar_t* product_string = hid_internal_get_devnode_property(dev_node, (const DEVPROPKEY*)&PKEY_DeviceInterface_Bluetooth_ModelNumber, DEVPROP_TYPE_STRING);
if (!product_string) {
DEVINST parent_dev_node = 0;
/* Fallback: Get devnode grandparent to reach out Bluetooth LE device node */
if (CM_Get_Parent(&parent_dev_node, dev_node, 0) == CR_SUCCESS) {
/* Device Name (UUID: 0x2A00) */
product_string = hid_internal_get_devnode_property(parent_dev_node, &DEVPKEY_NAME, DEVPROP_TYPE_STRING);
}
}
if (product_string) {
free(dev->product_string);
dev->product_string = product_string;
}
}
}
/* Unfortunately, HID_API_BUS_xxx constants alone aren't enough to distinguish between BLUETOOTH and BLE */
#define HID_API_BUS_FLAG_BLE 0x01
typedef struct hid_internal_detect_bus_type_result_ {
DEVINST dev_node;
hid_bus_type bus_type;
unsigned int bus_flags;
} hid_internal_detect_bus_type_result;
static hid_internal_detect_bus_type_result hid_internal_detect_bus_type(const wchar_t* interface_path)
{
wchar_t *device_id = NULL, *compatible_ids = NULL;
CONFIGRET cr;
DEVINST dev_node;
hid_internal_detect_bus_type_result result = { 0 };
/* 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)
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)
goto end;
/* Get devnode parent */
cr = CM_Get_Parent(&dev_node, dev_node, 0);
if (cr != CR_SUCCESS)
goto end;
/* Get the compatible ids from parent devnode */
compatible_ids = hid_internal_get_devnode_property(dev_node, &DEVPKEY_Device_CompatibleIds, DEVPROP_TYPE_STRING_LIST);
if (!compatible_ids)
goto end;
/* Now we can parse parent's compatible IDs to find out the device bus type */
for (wchar_t* compatible_id = compatible_ids; *compatible_id; compatible_id += wcslen(compatible_id) + 1) {
/* Normalize to upper case */
hid_internal_towupper(compatible_id);
/* USB devices
https://docs.microsoft.com/windows-hardware/drivers/hid/plug-and-play-support
https://docs.microsoft.com/windows-hardware/drivers/install/standard-usb-identifiers */
if (wcsstr(compatible_id, L"USB") != NULL) {
result.bus_type = HID_API_BUS_USB;
break;
}
/* Bluetooth devices
https://docs.microsoft.com/windows-hardware/drivers/bluetooth/installing-a-bluetooth-device */
if (wcsstr(compatible_id, L"BTHENUM") != NULL) {
result.bus_type = HID_API_BUS_BLUETOOTH;
break;
}
/* Bluetooth LE devices */
if (wcsstr(compatible_id, L"BTHLEDEVICE") != NULL) {
result.bus_type = HID_API_BUS_BLUETOOTH;
result.bus_flags |= HID_API_BUS_FLAG_BLE;
break;
}
/* I2C devices
https://docs.microsoft.com/windows-hardware/drivers/hid/plug-and-play-support-and-power-management */
if (wcsstr(compatible_id, L"PNP0C50") != NULL) {
result.bus_type = HID_API_BUS_I2C;
break;
}
/* SPI devices
https://docs.microsoft.com/windows-hardware/drivers/hid/plug-and-play-for-spi */
if (wcsstr(compatible_id, L"PNP0C51") != NULL) {
result.bus_type = HID_API_BUS_SPI;
break;
}
}
result.dev_node = dev_node;
end:
free(device_id);
free(compatible_ids);
return result;
}
static char *hid_internal_UTF16toUTF8(const wchar_t *src)
{
char *dst = NULL;
int len = WideCharToMultiByte(CP_UTF8, WC_ERR_INVALID_CHARS, src, -1, NULL, 0, NULL, NULL);
if (len) {
dst = (char*)calloc(len, sizeof(char));
if (dst == NULL) {
return NULL;
}
WideCharToMultiByte(CP_UTF8, WC_ERR_INVALID_CHARS, src, -1, dst, len, NULL, NULL);
}
return dst;
}
static wchar_t *hid_internal_UTF8toUTF16(const char *src)
{
wchar_t *dst = NULL;
int len = MultiByteToWideChar(CP_UTF8, MB_ERR_INVALID_CHARS, src, -1, NULL, 0);
if (len) {
dst = (wchar_t*)calloc(len, sizeof(wchar_t));
if (dst == NULL) {
return NULL;
}
MultiByteToWideChar(CP_UTF8, MB_ERR_INVALID_CHARS, src, -1, dst, len);
}
return dst;
}
static struct hid_device_info *hid_internal_get_device_info(const wchar_t *path, HANDLE handle)
{
struct hid_device_info *dev = NULL; /* return object */
HIDD_ATTRIBUTES attrib;
PHIDP_PREPARSED_DATA pp_data = NULL;
HIDP_CAPS caps;
wchar_t string[MAX_STRING_WCHARS + 1];
ULONG len;
ULONG size;
hid_internal_detect_bus_type_result detect_bus_type_result;
/* Create the record. */
dev = (struct hid_device_info*)calloc(1, sizeof(struct hid_device_info));
if (dev == NULL) {