示例#1
0
文件: FormMain.cs 项目: t00/TestCrypt
        private void FormMain_Load(object sender, EventArgs e)
        {
            // start the encryption thread pool to speed up the analyzer - this is also the first access to the native
            // "TrueCrypt.dll" and therefore an exception may occur when the library cannot be loaded
            try
            {
                TrueCrypt.EncryptionThreadPoolStart(Environment.ProcessorCount);
            }
            catch (DllNotFoundException)
            {
                MessageBox.Show(this, "Unable to load DLL \"TrueCrypt.dll\": This could be caused by a missing Microsoft Visual C++ 2010 Redistributable Package (x86).", Application.ProductName, MessageBoxButtons.OK, MessageBoxIcon.Stop);
                silentExit = true;
                Close();
            }

            // inform the user that some 64-bit operating systems are not supported due to driver signing
            string         errMessage;
            SafeFileHandle hDriver = TrueCrypt.OpenDriver(out errMessage);

            if (null != errMessage)
            {
                errMessage += " Mounting a volume will not work.";
                if (Wow.Is64BitOperatingSystem && Wow.IsOSAtLeast(Wow.OSVersion.WIN_VISTA))
                {
                    errMessage += " A 64-bit operating system which requires signed drivers (Windows® Vista or newer) has been detected. Use the F8 boot option and select \"Disable Driver Signature Enforcement\" to temporarily allow the TestCrypt driver to be loaded.";
                }
                MessageBox.Show(this, errMessage, Application.ProductName, MessageBoxButtons.OK, MessageBoxIcon.Warning);
            }
        }
示例#2
0
        /// <summary>
        /// Broadcasts a device change notification to inform the operating system about a device arrival/removal.
        /// </summary>
        /// <param name="message"></param>
        /// <param name="nDosDriveNo"></param>
        /// <param name="driveMap"></param>
        private static void BroadcastDeviceChange(uint message, int nDosDriveNo, uint driveMap)
        {
            uint eventId = 0;

            if (message == DBT_DEVICEARRIVAL)
            {
                eventId = SHCNE_DRIVEADD;
            }
            else if (message == DBT_DEVICEREMOVECOMPLETE)
            {
                eventId = SHCNE_DRIVEREMOVED;
            }
            else if (Wow.IsOSAtLeast(Wow.OSVersion.WIN_7) && message == DBT_DEVICEREMOVEPENDING) // Explorer on Windows 7 holds open handles of all drives when 'Computer' is expanded in navigation pane. SHCNE_DRIVEREMOVED must be used as DBT_DEVICEREMOVEPENDING is ignored.
            {
                eventId = SHCNE_DRIVEREMOVED;
            }

            if (driveMap == 0)
            {
                driveMap = (1U << nDosDriveNo);
            }

            if (eventId != 0)
            {
                for (int i = 0; i < 26; i++)
                {
                    if (0 != (driveMap & (1U << i)))
                    {
                        IntPtr root = Marshal.StringToHGlobalAnsi(string.Format("{0}:\\", Char.ToString((char)('A' + i))));
                        SHChangeNotify(eventId, SHCNF_PATHA, root, IntPtr.Zero);
                        Marshal.FreeHGlobal(root);
                    }
                }
            }

            DEV_BROADCAST_VOLUME dbv = new DEV_BROADCAST_VOLUME();

            dbv.dbcv_size       = (uint)Marshal.SizeOf(typeof(DEV_BROADCAST_VOLUME));
            dbv.dbcv_devicetype = DBT_DEVTYP_VOLUME;
            dbv.dbcv_reserved   = 0;
            dbv.dbcv_unitmask   = driveMap;
            dbv.dbcv_flags      = 0;

            uint timeOut = 1000;

            // SHChangeNotify() works on Vista, so the Explorer does not require WM_DEVICECHANGE
            if (System.Environment.OSVersion.Version.Major >= 6)
            {
                timeOut = 100;
            }

            uint   dwResult;
            IntPtr dbvPtr = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(DEV_BROADCAST_VOLUME)));

            Marshal.StructureToPtr(dbv, dbvPtr, true);
            SendMessageTimeout((IntPtr)HWND_BROADCAST, WM_DEVICECHANGE, message, dbvPtr, SMTO_ABORTIFHUNG, timeOut, out dwResult);

            // Explorer prior Vista sometimes fails to register a new drive
            if (System.Environment.OSVersion.Version.Major < 6 && message == DBT_DEVICEARRIVAL)
            {
                SendMessageTimeout((IntPtr)HWND_BROADCAST, WM_DEVICECHANGE, message, dbvPtr, SMTO_ABORTIFHUNG, 200, out dwResult);
            }
            Marshal.FreeHGlobal(dbvPtr);
        }