Beispiel #1
0
        public static void Close()
        {
            if (driver == null)
            {
                return;
            }

            uint refCount = 0;

            driver.DeviceIOControl(IOCTL_OLS_GET_REFCOUNT, null, ref refCount);

            driver.Close();

            if (refCount <= 1)
            {
                driver.Delete();
            }

            driver = null;

            if (isaBusMutex != null)
            {
                isaBusMutex.Close();
                isaBusMutex = null;
            }

            // try to delete temporary driver file again if failed during open
            if (fileName != null && File.Exists(fileName))
            {
                try {
                    File.Delete(fileName);
                    fileName = null;
                } catch (IOException) { }
                catch (UnauthorizedAccessException) { }
            }
        }
Beispiel #2
0
        public static void Open()
        {
            // no implementation for unix systems
            int p = (int)Environment.OSVersion.Platform;

            if ((p == 4) || (p == 128))
            {
                return;
            }

            if (driver != null)
            {
                return;
            }

            // clear the current report
            report.Length = 0;

            driver = new KernelDriver("WinRing0_1_2_0");
            driver.Open();

            if (!driver.IsOpen)
            {
                // driver is not loaded, try to install and open

                fileName = GetTempFileName();
                if (fileName != null && ExtractDriver(fileName))
                {
                    string installError;
                    if (driver.Install(fileName, out installError))
                    {
                        driver.Open();

                        if (!driver.IsOpen)
                        {
                            driver.Delete();
                            report.AppendLine("Status: Opening driver failed after install");
                        }
                    }
                    else
                    {
                        string errorFirstInstall = installError;

                        // install failed, try to delete and reinstall
                        driver.Delete();

                        // wait a short moment to give the OS a chance to remove the driver
                        Thread.Sleep(2000);

                        string errorSecondInstall;
                        if (driver.Install(fileName, out errorSecondInstall))
                        {
                            driver.Open();

                            if (!driver.IsOpen)
                            {
                                driver.Delete();
                                report.AppendLine(
                                    "Status: Opening driver failed after reinstall");
                            }
                        }
                        else
                        {
                            report.AppendLine("Status: Installing driver \"" +
                                              fileName + "\" failed" +
                                              (File.Exists(fileName) ? " and file exists" : ""));
                            report.AppendLine("First Exception: " + errorFirstInstall);
                            report.AppendLine("Second Exception: " + errorSecondInstall);
                        }
                    }
                }
                else
                {
                    report.AppendLine("Status: Extracting driver failed");
                }

                try {
                    // try to delte the driver file
                    if (File.Exists(fileName))
                    {
                        File.Delete(fileName);
                    }
                    fileName = null;
                } catch (IOException) { }
                catch (UnauthorizedAccessException) { }
            }

            if (!driver.IsOpen)
            {
                driver = null;
            }

            string mutexName = "Global\\Access_ISABUS.HTP.Method";

            try {
                isaBusMutex = new Mutex(false, mutexName);
            } catch (UnauthorizedAccessException) {
                try {
                    isaBusMutex = Mutex.OpenExisting(mutexName, MutexRights.Synchronize);
                } catch { }
            }
        }