misc.c

winNT技术操作系统,国外开放的原代码和LIUX一样

            /* convert the string to an integer value and create a
               formatted string */
            ULONG ulLocation = (ULONG)wcstoul(szBuffer,
                                              NULL,
                                              10);
            if (LoadAndFormatString(hDllInstance,
                                    IDS_LOCATIONSTR,
                                    &szFormatted,
                                    ulLocation,
                                    szBuffer) != 0)
            {
                wcsncpy(szBuffer,
                        szFormatted,
                        BufferSize - 1);
                szBuffer[BufferSize - 1] = L'\0';
                LocalFree((HLOCAL)szFormatted);
            }
            else
                Ret = FALSE;
        }
    }

    if (!Ret &&
        LoadString(hDllInstance,
                   IDS_UNKNOWN,
                   szBuffer,
                   BufferSize))
    {
        Ret = TRUE;
    }

    return Ret;
}


BOOL
GetDeviceStatusString(IN DEVINST DevInst,
                      IN HMACHINE hMachine,
                      OUT LPWSTR szBuffer,
                      IN DWORD BufferSize)
{
    CONFIGRET cr;
    ULONG Status, ProblemNumber;
    UINT MessageId = IDS_UNKNOWN;
    BOOL Ret = FALSE;

    szBuffer[0] = L'\0';
    cr = CM_Get_DevNode_Status_Ex(&Status,
                                  &ProblemNumber,
                                  DevInst,
                                  0,
                                  hMachine);
    if (cr == CR_SUCCESS)
    {
        if (Status & DN_HAS_PROBLEM)
        {
            UINT uRet;

            uRet = DeviceProblemText(hMachine,
                                     DevInst,
                                     ProblemNumber,
                                     szBuffer,
                                     (BufferSize != 0 ? BufferSize : BufferSize - 1));

            Ret = (uRet != 0 && uRet < BufferSize);
        }
        else
        {
            if (!(Status & (DN_DRIVER_LOADED | DN_STARTED)))
            {
                MessageId = IDS_NODRIVERLOADED;
            }
            else
            {
                MessageId = IDS_DEV_NO_PROBLEM;
            }

            goto GeneralMessage;
        }
    }
    else
    {
GeneralMessage:
        if (LoadString(hDllInstance,
                        MessageId,
                        szBuffer,
                        (int)BufferSize))
        {
            Ret = TRUE;
        }
    }

    return Ret;
}


BOOL
GetDriverProviderString(IN HDEVINFO DeviceInfoSet,
                        IN PSP_DEVINFO_DATA DeviceInfoData,
                        OUT LPWSTR szBuffer,
                        IN DWORD BufferSize)
{
    HKEY hKey;
    DWORD dwSize, dwType;
    BOOL Ret = FALSE;

    szBuffer[0] = L'\0';

    /* get driver provider, date and version */
    hKey = SetupDiOpenDevRegKey(DeviceInfoSet,
                                DeviceInfoData,
                                DICS_FLAG_GLOBAL,
                                0,
                                DIREG_DRV,
                                KEY_QUERY_VALUE);
    if (hKey != INVALID_HANDLE_VALUE)
    {
        /* query the driver provider */
        dwSize = BufferSize;
        if (RegQueryValueEx(hKey,
                            REGSTR_VAL_PROVIDER_NAME,
                            NULL,
                            &dwType,
                            (LPBYTE)szBuffer,
                            &dwSize) == ERROR_SUCCESS &&
            dwType == REG_SZ &&
            szBuffer[0] != L'\0')
        {
            Ret = TRUE;
        }
        else
        {
            szBuffer[0] = L'\0';
        }

        RegCloseKey(hKey);
    }

    if (szBuffer[0] == L'\0')
    {
        /* unable to query the information */
        if (LoadString(hDllInstance,
                       IDS_UNKNOWN,
                       szBuffer,
                       BufferSize))
        {
            Ret = TRUE;
        }
    }

    return Ret;
}


BOOL
GetDriverVersionString(IN HDEVINFO DeviceInfoSet,
                       IN PSP_DEVINFO_DATA DeviceInfoData,
                       OUT LPWSTR szBuffer,
                       IN DWORD BufferSize)
{
    HKEY hKey;
    DWORD dwSize, dwType;
    BOOL Ret = FALSE;

    szBuffer[0] = L'\0';

    /* get driver provider, date and version */
    hKey = SetupDiOpenDevRegKey(DeviceInfoSet,
                                DeviceInfoData,
                                DICS_FLAG_GLOBAL,
                                0,
                                DIREG_DRV,
                                KEY_QUERY_VALUE);
    if (hKey != INVALID_HANDLE_VALUE)
    {
        /* query the driver provider */
        dwSize = BufferSize;
        if (RegQueryValueEx(hKey,
                            L"DriverVersion",
                            NULL,
                            &dwType,
                            (LPBYTE)szBuffer,
                            &dwSize) == ERROR_SUCCESS &&
            dwType == REG_SZ &&
            szBuffer[0] != L'\0')
        {
            Ret = TRUE;
        }
        else
        {
            szBuffer[0] = L'\0';
        }

        RegCloseKey(hKey);
    }

    if (szBuffer[0] == L'\0')
    {
        /* unable to query the information */
        if (LoadString(hDllInstance,
                       IDS_NOTAVAILABLE,
                       szBuffer,
                       BufferSize))
        {
            Ret = TRUE;
        }
    }

    return Ret;
}

BOOL
GetDriverDateString(IN HDEVINFO DeviceInfoSet,
                    IN PSP_DEVINFO_DATA DeviceInfoData,
                    OUT LPWSTR szBuffer,
                    IN DWORD BufferSize)
{
    HKEY hKey;
    FILETIME DriverDate;
    SYSTEMTIME SystemTime, LocalTime;
    DWORD dwSize, dwType;
    BOOL Ret = FALSE;

    szBuffer[0] = L'\0';

    /* get driver provider, date and version */
    hKey = SetupDiOpenDevRegKey(DeviceInfoSet,
                                DeviceInfoData,
                                DICS_FLAG_GLOBAL,
                                0,
                                DIREG_DRV,
                                KEY_QUERY_VALUE);
    if (hKey != INVALID_HANDLE_VALUE)
    {
        /* query the driver provider */
        dwSize = sizeof(FILETIME);
        if (RegQueryValueEx(hKey,
                            L"DriverDateData",
                            NULL,
                            &dwType,
                            (LPBYTE)&DriverDate,
                            &dwSize) == ERROR_SUCCESS &&
            dwType == REG_BINARY &&
            dwSize == sizeof(FILETIME) &&
            FileTimeToSystemTime(&DriverDate,
                                 &SystemTime) &&
            SystemTimeToTzSpecificLocalTime(NULL,
                                            &SystemTime,
                                            &LocalTime) &&
            GetDateFormat(LOCALE_USER_DEFAULT,
                          DATE_SHORTDATE,
                          &LocalTime,
                          NULL,
                          szBuffer,
                          BufferSize) != 0)
        {
            Ret = TRUE;
        }

        RegCloseKey(hKey);
    }

    if (!Ret)
    {
        /* unable to query the information */
        if (LoadString(hDllInstance,
                       IDS_NOTAVAILABLE,
                       szBuffer,
                       BufferSize))
        {
            Ret = TRUE;
        }
    }

    return Ret;
}



BOOL
IsDeviceHidden(IN DEVINST DevInst,
               IN HMACHINE hMachine,
               OUT BOOL *IsHidden)
{
    CONFIGRET cr;
    ULONG Status, ProblemNumber;
    BOOL Ret = FALSE;

    cr = CM_Get_DevNode_Status_Ex(&Status,
                                  &ProblemNumber,
                                  DevInst,
                                  0,
                                  hMachine);
    if (cr == CR_SUCCESS)
    {
        *IsHidden = ((Status & DN_NO_SHOW_IN_DM) != 0);
        Ret = TRUE;
    }

    return Ret;
}


BOOL
CanDisableDevice(IN DEVINST DevInst,
                 IN HMACHINE hMachine,
                 OUT BOOL *CanDisable)
{
    CONFIGRET cr;
    ULONG Status, ProblemNumber;
    BOOL Ret = FALSE;

    cr = CM_Get_DevNode_Status_Ex(&Status,
                                  &ProblemNumber,
                                  DevInst,
                                  0,
                                  hMachine);
    if (cr == CR_SUCCESS)
    {
        *CanDisable = ((Status & DN_DISABLEABLE) != 0);
        Ret = TRUE;
    }

    return Ret;
}


BOOL
IsDeviceStarted(IN DEVINST DevInst,
                IN HMACHINE hMachine,
                OUT BOOL *IsStarted)
{
    CONFIGRET cr;
    ULONG Status, ProblemNumber;
    BOOL Ret = FALSE;

    cr = CM_Get_DevNode_Status_Ex(&Status,
                                  &ProblemNumber,
                                  DevInst,
                                  0,
                                  hMachine);
    if (cr == CR_SUCCESS)
    {
        *IsStarted = ((Status & DN_STARTED) != 0);
        Ret = TRUE;
    }

    return Ret;
}


BOOL
IsDriverInstalled(IN DEVINST DevInst,
                  IN HMACHINE hMachine,
                  OUT BOOL *Installed)
{
    CONFIGRET cr;
    ULONG Status, ProblemNumber;
    BOOL Ret = FALSE;

    cr = CM_Get_DevNode_Status_Ex(&Status,
                                  &ProblemNumber,
                                  DevInst,
                                  0,
                                  hMachine);
    if (cr == CR_SUCCESS)
    {
        *Installed = ((Status & DN_HAS_PROBLEM) != 0 ||
                      (Status & (DN_DRIVER_LOADED | DN_STARTED)) != 0);
        Ret = TRUE;
    }