HID_API_EXPORT hid_device * HID_API_CALL hid_open_path(const char *path)
{
hid_device *dev;
HIDP_CAPS caps;
HIDP_PREPARSED_DATA *pp_data = NULL;
BOOLEAN res;
NTSTATUS nt_res;
#ifndef HIDAPI_USE_DDK
if (!initialized)
lookup_functions();
#endif
dev = new_hid_device();
// Open a handle to the device
dev->device_handle = CreateFileA(path,
GENERIC_WRITE |GENERIC_READ,
FILE_SHARE_READ | FILE_SHARE_WRITE, /*share mode*/
NULL,
OPEN_EXISTING,
FILE_FLAG_OVERLAPPED,
/* FILE_ATTRIBUTE_NORMAL, */
0);
// Check validity of write_handle.
if (dev->device_handle == INVALID_HANDLE_VALUE) {
// Unable to open the device.
register_error(dev, "CreateFile");
goto err;
}
// Get the Input Report length for the device.
res = HidD_GetPreparsedData(dev->device_handle, &pp_data);
if (!res) {
register_error(dev, "HidD_GetPreparsedData");
goto err;
}
nt_res = HidP_GetCaps(pp_data, &caps);
if (nt_res != HIDP_STATUS_SUCCESS) {
register_error(dev, "HidP_GetCaps");
goto err_pp_data;
}
dev->input_report_length = caps.InputReportByteLength;
HidD_FreePreparsedData(pp_data);
return dev;
err_pp_data:
HidD_FreePreparsedData(pp_data);
err:
CloseHandle(dev->device_handle);
free(dev);
return NULL;
}
int HID_API_EXPORT hid_init(void)
{
#ifndef HIDAPI_USE_DDK
if (!initialized) {
if (lookup_functions() < 0) {
hid_exit();
return -1;
}
initialized = TRUE;
}
#endif
return 0;
}
HID_API_EXPORT hid_device * HID_API_CALL hid_open_path(const char *path)
{
hid_device *dev;
HIDP_CAPS caps;
HIDP_PREPARSED_DATA *pp_data = NULL;
BOOLEAN res;
NTSTATUS nt_res;
#ifndef HIDAPI_USE_DDK
if (!initialized)
lookup_functions();
#endif
dev = new_hid_device();
// Open a handle to the device
dev->device_handle = open_device(path);
// Check validity of write_handle.
if (dev->device_handle == INVALID_HANDLE_VALUE) {
// Unable to open the device.
register_error(dev, "CreateFile");
goto err;
}
// Get the Input Report length for the device.
res = HidD_GetPreparsedData(dev->device_handle, &pp_data);
if (!res) {
register_error(dev, "HidD_GetPreparsedData");
goto err;
}
nt_res = HidP_GetCaps(pp_data, &caps);
if (nt_res != HIDP_STATUS_SUCCESS) {
register_error(dev, "HidP_GetCaps");
goto err_pp_data;
}
dev->input_report_length = caps.InputReportByteLength;
HidD_FreePreparsedData(pp_data);
dev->read_buf = (char*) malloc(dev->input_report_length);
return dev;
err_pp_data:
HidD_FreePreparsedData(pp_data);
err:
CloseHandle(dev->device_handle);
free(dev);
return NULL;
}
int HID_API_EXPORT hid_init(void)
{
#ifndef HIDAPI_USE_DDK
if (!initialized) {
// DebugClearText ();
if (lookup_functions() < 0) {
hid_exit();
DebugAppendText ("initialized FAILED\n");
return -1;
}
initialized = TRUE;
DebugAppendText ("initialized = TRUE;\n");
}
#endif
return 0;
}
struct hid_device_info HID_API_EXPORT * HID_API_CALL hid_enumerate(unsigned short vendor_id, unsigned short product_id)
{
BOOL res;
struct hid_device_info *root = NULL; // return object
struct hid_device_info *cur_dev = NULL;
#ifndef HIDAPI_USE_DDK
if (!initialized)
lookup_functions();
#endif
// Windows objects for interacting with the driver.
GUID InterfaceClassGuid = {0x4d1e55b2, 0xf16f, 0x11cf, {0x88, 0xcb, 0x00, 0x11, 0x11, 0x00, 0x00, 0x30} };
SP_DEVINFO_DATA devinfo_data;
SP_DEVICE_INTERFACE_DATA device_interface_data;
SP_DEVICE_INTERFACE_DETAIL_DATA_A *device_interface_detail_data = NULL;
HDEVINFO device_info_set = INVALID_HANDLE_VALUE;
// Initialize the Windows objects.
devinfo_data.cbSize = sizeof(SP_DEVINFO_DATA);
device_interface_data.cbSize = sizeof(SP_DEVICE_INTERFACE_DATA);
// Get information for all the devices belonging to the HID class.
device_info_set = SetupDiGetClassDevsA(&InterfaceClassGuid, NULL, NULL, DIGCF_PRESENT | DIGCF_DEVICEINTERFACE);
// Iterate over each device in the HID class, looking for the right one.
int device_index = 0;
for (;;) {
HANDLE write_handle = INVALID_HANDLE_VALUE;
DWORD required_size = 0;
res = SetupDiEnumDeviceInterfaces(device_info_set,
NULL,
&InterfaceClassGuid,
device_index,
&device_interface_data);
if (!res) {
// A return of FALSE from this function means that
// there are no more devices.
break;
}
// Call with 0-sized detail size, and let the function
// tell us how long the detail struct needs to be. The
// size is put in &required_size.
res = SetupDiGetDeviceInterfaceDetailA(device_info_set,
&device_interface_data,
NULL,
0,
&required_size,
NULL);
// Allocate a long enough structure for device_interface_detail_data.
device_interface_detail_data = (SP_DEVICE_INTERFACE_DETAIL_DATA_A*) malloc(required_size);
device_interface_detail_data->cbSize = sizeof(SP_DEVICE_INTERFACE_DETAIL_DATA_A);
// Get the detailed data for this device. The detail data gives us
// the device path for this device, which is then passed into
// CreateFile() to get a handle to the device.
res = SetupDiGetDeviceInterfaceDetailA(device_info_set,
&device_interface_data,
device_interface_detail_data,
required_size,
NULL,
NULL);
if (!res) {
//register_error(dev, "Unable to call SetupDiGetDeviceInterfaceDetail");
// Continue to the next device.
goto cont;
}
//wprintf(L"HandleName: %s\n", device_interface_detail_data->DevicePath);
// Open a handle to the device
write_handle = open_device(device_interface_detail_data->DevicePath);
// Check validity of write_handle.
if (write_handle == INVALID_HANDLE_VALUE) {
// Unable to open the device.
//register_error(dev, "CreateFile");
goto cont_close;
}
// Get the Vendor ID and Product ID for this device.
HIDD_ATTRIBUTES attrib;
attrib.Size = sizeof(HIDD_ATTRIBUTES);
HidD_GetAttributes(write_handle, &attrib);
//wprintf(L"Product/Vendor: %x %x\n", attrib.ProductID, attrib.VendorID);
// Check the VID/PID to see if we should add this
// device to the enumeration list.
if ((vendor_id == 0x0 && product_id == 0x0) ||
(attrib.VendorID == vendor_id && attrib.ProductID == product_id)) {
#define WSTR_LEN 512
const char *str;
struct hid_device_info *tmp;
HIDP_PREPARSED_DATA *pp_data = NULL;
HIDP_CAPS caps;
BOOLEAN res;
NTSTATUS nt_res;
wchar_t wstr[WSTR_LEN]; // TODO: Determine Size
size_t len;
/* VID/PID match. Create the record. */
tmp = (hid_device_info*) calloc(1, sizeof(struct hid_device_info));
if (cur_dev) {
cur_dev->next = tmp;
}
else {
root = tmp;
}
cur_dev = tmp;
// Get the Usage Page and Usage for this device.
res = HidD_GetPreparsedData(write_handle, &pp_data);
if (res) {
nt_res = HidP_GetCaps(pp_data, &caps);
if (nt_res == HIDP_STATUS_SUCCESS) {
cur_dev->usage_page = caps.UsagePage;
cur_dev->usage = caps.Usage;
}
HidD_FreePreparsedData(pp_data);
}
/* Fill out the record */
cur_dev->next = NULL;
str = device_interface_detail_data->DevicePath;
if (str) {
len = strlen(str);
cur_dev->path = (char*) calloc(len+1, sizeof(char));
strncpy(cur_dev->path, str, len+1);
cur_dev->path[len] = '\0';
}
else
cur_dev->path = NULL;
/* Serial Number */
res = HidD_GetSerialNumberString(write_handle, wstr, sizeof(wstr));
wstr[WSTR_LEN-1] = 0x0000;
if (res) {
cur_dev->serial_number = _wcsdup(wstr);
}
/* Manufacturer String */
res = HidD_GetManufacturerString(write_handle, wstr, sizeof(wstr));
wstr[WSTR_LEN-1] = 0x0000;
if (res) {
cur_dev->manufacturer_string = _wcsdup(wstr);
}
/* Product String */
res = HidD_GetProductString(write_handle, wstr, sizeof(wstr));
wstr[WSTR_LEN-1] = 0x0000;
if (res) {
cur_dev->product_string = _wcsdup(wstr);
}
/* VID/PID */
cur_dev->vendor_id = attrib.VendorID;
cur_dev->product_id = attrib.ProductID;
/* Release Number */
cur_dev->release_number = attrib.VersionNumber;
/* Interface Number. It can sometimes be parsed out of the path
on Windows if a device has multiple interfaces. See
http://msdn.microsoft.com/en-us/windows/hardware/gg487473 or
search for "Hardware IDs for HID Devices" at MSDN. If it's not
in the path, it's set to -1. */
cur_dev->interface_number = -1;
if (cur_dev->path) {
char *interface_component = strstr(cur_dev->path, "&mi_");
if (interface_component) {
char *hex_str = interface_component + 4;
char *endptr = NULL;
cur_dev->interface_number = strtol(hex_str, &endptr, 16);
if (endptr == hex_str) {
/* The parsing failed. Set interface_number to -1. */
cur_dev->interface_number = -1;
}
}
}
}
cont_close:
CloseHandle(write_handle);
cont:
// We no longer need the detail data. It can be freed
free(device_interface_detail_data);
device_index++;
}
// Close the device information handle.
SetupDiDestroyDeviceInfoList(device_info_set);
return root;
}
struct hid_device_info HID_API_EXPORT * HID_API_CALL hid_enumerate(unsigned short vendor_id, unsigned short product_id)
{
BOOL res;
struct hid_device_info *root = NULL; // return object
struct hid_device_info *cur_dev = NULL;
#ifndef HIDAPI_USE_DDK
if (!initialized)
lookup_functions();
#endif
// Windows objects for interacting with the driver.
GUID InterfaceClassGuid = {0x4d1e55b2, 0xf16f, 0x11cf, {0x88, 0xcb, 0x00, 0x11, 0x11, 0x00, 0x00, 0x30} };
SP_DEVINFO_DATA devinfo_data;
SP_DEVICE_INTERFACE_DATA device_interface_data;
SP_DEVICE_INTERFACE_DETAIL_DATA_A *device_interface_detail_data = NULL;
HDEVINFO device_info_set = INVALID_HANDLE_VALUE;
// Initialize the Windows objects.
devinfo_data.cbSize = sizeof(SP_DEVINFO_DATA);
device_interface_data.cbSize = sizeof(SP_DEVICE_INTERFACE_DATA);
// Get information for all the devices belonging to the HID class.
device_info_set = SetupDiGetClassDevsA(&InterfaceClassGuid, NULL, NULL, DIGCF_PRESENT | DIGCF_DEVICEINTERFACE);
// Iterate over each device in the HID class, looking for the right one.
int device_index = 0;
for (;;) {
HANDLE write_handle = INVALID_HANDLE_VALUE;
DWORD required_size = 0;
res = SetupDiEnumDeviceInterfaces(device_info_set,
NULL,
&InterfaceClassGuid,
device_index,
&device_interface_data);
if (!res) {
// A return of FALSE from this function means that
// there are no more devices.
break;
}
// Call with 0-sized detail size, and let the function
// tell us how long the detail struct needs to be. The
// size is put in &required_size.
res = SetupDiGetDeviceInterfaceDetailA(device_info_set,
&device_interface_data,
NULL,
0,
&required_size,
NULL);
// Allocate a long enough structure for device_interface_detail_data.
device_interface_detail_data = (SP_DEVICE_INTERFACE_DETAIL_DATA_A*) malloc(required_size);
device_interface_detail_data->cbSize = sizeof(SP_DEVICE_INTERFACE_DETAIL_DATA_A);
// Get the detailed data for this device. The detail data gives us
// the device path for this device, which is then passed into
// CreateFile() to get a handle to the device.
res = SetupDiGetDeviceInterfaceDetailA(device_info_set,
&device_interface_data,
device_interface_detail_data,
required_size,
NULL,
NULL);
if (!res) {
//register_error(dev, "Unable to call SetupDiGetDeviceInterfaceDetail");
// Continue to the next device.
goto cont;
}
//wprintf(L"HandleName: %s\n", device_interface_detail_data->DevicePath);
// Open a handle to the device
write_handle = CreateFileA(device_interface_detail_data->DevicePath,
GENERIC_WRITE |GENERIC_READ,
FILE_SHARE_READ|FILE_SHARE_WRITE, /*share mode*/
NULL,
OPEN_EXISTING,
FILE_FLAG_OVERLAPPED,//FILE_ATTRIBUTE_NORMAL,
0);
// Check validity of write_handle.
if (write_handle == INVALID_HANDLE_VALUE) {
// Unable to open the device.
//register_error(dev, "CreateFile");
goto cont_close;
}
// Get the Vendor ID and Product ID for this device.
HIDD_ATTRIBUTES attrib;
attrib.Size = sizeof(HIDD_ATTRIBUTES);
HidD_GetAttributes(write_handle, &attrib);
//wprintf(L"Product/Vendor: %x %x\n", attrib.ProductID, attrib.VendorID);
// Check the VID/PID to see if we should add this
// device to the enumeration list.
if ((vendor_id == 0x0 && product_id == 0x0) ||
(attrib.VendorID == vendor_id && attrib.ProductID == product_id)) {
#define WSTR_LEN 512
const char *str;
struct hid_device_info *tmp;
wchar_t wstr[WSTR_LEN]; // TODO: Determine Size
size_t len;
/* VID/PID match. Create the record. */
tmp = (hid_device_info*) calloc(1, sizeof(struct hid_device_info));
if (cur_dev) {
cur_dev->next = tmp;
}
else {
root = tmp;
}
cur_dev = tmp;
/* Fill out the record */
cur_dev->next = NULL;
str = device_interface_detail_data->DevicePath;
if (str) {
len = strlen(str);
cur_dev->path = (char*) calloc(len+1, sizeof(char));
strncpy(cur_dev->path, str, len+1);
cur_dev->path[len] = '\0';
}
else
cur_dev->path = NULL;
/* Serial Number */
res = HidD_GetSerialNumberString(write_handle, wstr, sizeof(wstr));
wstr[WSTR_LEN-1] = 0x0000;
if (res) {
cur_dev->serial_number = _wcsdup(wstr);
}
/* Manufacturer String */
res = HidD_GetManufacturerString(write_handle, wstr, sizeof(wstr));
wstr[WSTR_LEN-1] = 0x0000;
if (res) {
cur_dev->manufacturer_string = _wcsdup(wstr);
}
/* Product String */
res = HidD_GetProductString(write_handle, wstr, sizeof(wstr));
wstr[WSTR_LEN-1] = 0x0000;
if (res) {
cur_dev->product_string = _wcsdup(wstr);
}
/* VID/PID */
cur_dev->vendor_id = attrib.VendorID;
cur_dev->product_id = attrib.ProductID;
}
cont_close:
CloseHandle(write_handle);
cont:
// We no longer need the detail data. It can be freed
free(device_interface_detail_data);
device_index++;
}
// Close the device information handle.
SetupDiDestroyDeviceInfoList(device_info_set);
return root;
}
