Examples with Kernel32 com.sun.jna.platform.win32.Kernel32 used on opensource projects

Example 31 with Kernel32

use of com.sun.jna.platform.win32.Kernel32 in project jna by java-native-access.

the class Advapi32Util method backupEncryptedFile.

/**
     * Backup an encrypted file or folder without decrypting it. A file named
     * "bar/sample.text" will be backed-up to "destDir/sample.text". A directory
     * named "bar" will be backed-up to "destDir/bar". This method is NOT
     * recursive. If you have an encrypted directory with encrypted files, this
     * method must be called once for the directory, and once for each encrypted
     * file to be backed-up.
     *
     * @param src
     *         The encrypted file or directory to backup.
     * @param destDir
     *         The directory where the backup will be saved.
     */
public static void backupEncryptedFile(File src, File destDir) {
    if (!destDir.isDirectory()) {
        throw new IllegalArgumentException("destDir must be a directory.");
    }
    // Open the file for export (backup)
    ULONG readFlag = new ULONG(0);
    // Import (restore) file
    ULONG writeFlag = new ULONG(CREATE_FOR_IMPORT);
    if (src.isDirectory()) {
        writeFlag.setValue(CREATE_FOR_IMPORT | CREATE_FOR_DIR);
    }
    // open encrypted file for export
    String srcFileName = src.getAbsolutePath();
    PointerByReference pvContext = new PointerByReference();
    if (Advapi32.INSTANCE.OpenEncryptedFileRaw(srcFileName, readFlag, pvContext) != W32Errors.ERROR_SUCCESS) {
        throw new Win32Exception(Kernel32.INSTANCE.GetLastError());
    }
    // read encrypted file
    final ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
    FE_EXPORT_FUNC pfExportCallback = new FE_EXPORT_FUNC() {

        @Override
        public DWORD callback(Pointer pbData, Pointer pvCallbackContext, ULONG ulLength) {
            byte[] arr = pbData.getByteArray(0, ulLength.intValue());
            try {
                outputStream.write(arr);
            } catch (IOException e) {
                throw new RuntimeException(e);
            }
            return new DWORD(W32Errors.ERROR_SUCCESS);
        }
    };
    if (Advapi32.INSTANCE.ReadEncryptedFileRaw(pfExportCallback, null, pvContext.getValue()) != W32Errors.ERROR_SUCCESS) {
        throw new Win32Exception(Kernel32.INSTANCE.GetLastError());
    }
    // close
    try {
        outputStream.close();
    } catch (IOException e) {
        throw new RuntimeException(e);
    }
    Advapi32.INSTANCE.CloseEncryptedFileRaw(pvContext.getValue());
    // open file for import
    String destFileName = destDir.getAbsolutePath() + File.separator + src.getName();
    pvContext = new PointerByReference();
    if (Advapi32.INSTANCE.OpenEncryptedFileRaw(destFileName, writeFlag, pvContext) != W32Errors.ERROR_SUCCESS) {
        throw new Win32Exception(Kernel32.INSTANCE.GetLastError());
    }
    // write encrypted file
    final IntByReference elementsReadWrapper = new IntByReference(0);
    FE_IMPORT_FUNC pfImportCallback = new FE_IMPORT_FUNC() {

        @Override
        public DWORD callback(Pointer pbData, Pointer pvCallbackContext, ULONGByReference ulLength) {
            int elementsRead = elementsReadWrapper.getValue();
            int remainingElements = outputStream.size() - elementsRead;
            int length = Math.min(remainingElements, ulLength.getValue().intValue());
            pbData.write(0, outputStream.toByteArray(), elementsRead, length);
            elementsReadWrapper.setValue(elementsRead + length);
            ulLength.setValue(new ULONG(length));
            return new DWORD(W32Errors.ERROR_SUCCESS);
        }
    };
    if (Advapi32.INSTANCE.WriteEncryptedFileRaw(pfImportCallback, null, pvContext.getValue()) != W32Errors.ERROR_SUCCESS) {
        throw new Win32Exception(Kernel32.INSTANCE.GetLastError());
    }
    // close
    Advapi32.INSTANCE.CloseEncryptedFileRaw(pvContext.getValue());
}

Example 32 with Kernel32

use of com.sun.jna.platform.win32.Kernel32 in project jna by java-native-access.

the class Advapi32Util method isWellKnownSid.

/**
	 * Compares a SID to a well known SID and returns TRUE if they match.
	 *
	 * @param sidString
	 *            String representation of a SID.
	 * @param wellKnownSidType
	 *            Member of the WELL_KNOWN_SID_TYPE enumeration to compare with
	 *            the SID at pSid.
	 * @return True if the SID is of the well-known type, false otherwise.
	 */
public static boolean isWellKnownSid(String sidString, int wellKnownSidType) {
    PSIDByReference pSID = new PSIDByReference();
    if (!Advapi32.INSTANCE.ConvertStringSidToSid(sidString, pSID)) {
        throw new Win32Exception(Kernel32.INSTANCE.GetLastError());
    }
    PSID value = pSID.getValue();
    try {
        return Advapi32.INSTANCE.IsWellKnownSid(value, wellKnownSidType);
    } finally {
        Kernel32Util.freeLocalMemory(value.getPointer());
    }
}

Example 33 with Kernel32

use of com.sun.jna.platform.win32.Kernel32 in project jna by java-native-access.

the class Kernel32NamedPipeTest method testNamedPipeServerAPI.

@Test
public void testNamedPipeServerAPI() {
    String pipeName = "\\\\.\\pipe\\" + getCurrentTestName();
    HANDLE hNamedPipe = Kernel32.INSTANCE.CreateNamedPipe(pipeName, // dwOpenMode
    WinBase.PIPE_ACCESS_DUPLEX, // dwPipeMode
    WinBase.PIPE_TYPE_BYTE | WinBase.PIPE_READMODE_BYTE | WinBase.PIPE_WAIT, // nMaxInstances,
    1, // nOutBufferSize,
    Byte.MAX_VALUE, // nInBufferSize,
    Byte.MAX_VALUE, // nDefaultTimeOut,
    1000, // lpSecurityAttributes
    null);
    assertCallSucceeded("CreateNamedPipe", !WinBase.INVALID_HANDLE_VALUE.equals(hNamedPipe));
    // NOTE: we don't really care what the returned values are only that the call succeeds
    try {
        IntByReference lpFlags = new IntByReference(0);
        IntByReference lpOutBuffferSize = new IntByReference(0);
        IntByReference lpInBufferSize = new IntByReference(0);
        IntByReference lpMaxInstances = new IntByReference(0);
        assertCallSucceeded("GetNamedPipeInfo", Kernel32.INSTANCE.GetNamedPipeInfo(hNamedPipe, lpFlags, lpOutBuffferSize, lpInBufferSize, lpMaxInstances));
        ULONGByReference ServerProcessId = new ULONGByReference();
        assertCallSucceeded("GetNamedPipeServerProcessId", Kernel32.INSTANCE.GetNamedPipeServerProcessId(hNamedPipe, ServerProcessId));
        ULONGByReference ServerSessionId = new ULONGByReference();
        assertCallSucceeded("GetNamedPipeServerSessionId", Kernel32.INSTANCE.GetNamedPipeServerSessionId(hNamedPipe, ServerSessionId));
        assertCallSucceeded("DisconnectNamedPipe", Kernel32.INSTANCE.DisconnectNamedPipe(hNamedPipe));
    } finally {
        // clean up
        assertCallSucceeded("Named pipe handle close", Kernel32.INSTANCE.CloseHandle(hNamedPipe));
    }
}

Example 34 with Kernel32

use of com.sun.jna.platform.win32.Kernel32 in project jna by java-native-access.

the class Kernel32NamedPipeTest method testMultiThreadedNamedPipe.

@Test
public void testMultiThreadedNamedPipe() {
    final String pipeName = "\\\\.\\pipe\\" + getCurrentTestName();
    final Logger logger = Logger.getLogger(getClass().getName());
    final int MAX_BUFFER_SIZE = 1024;
    ExecutorService executors = Executors.newFixedThreadPool(2);
    try {
        Future<?> server = executors.submit(new Runnable() {

            @Override
            public void run() {
                // based on https://msdn.microsoft.com/en-us/library/windows/desktop/aa365588(v=vs.85).aspx
                HANDLE hNamedPipe = assertValidHandle("CreateNamedPipe", Kernel32.INSTANCE.CreateNamedPipe(pipeName, // dwOpenMode
                WinBase.PIPE_ACCESS_DUPLEX, // dwPipeMode
                WinBase.PIPE_TYPE_MESSAGE | WinBase.PIPE_READMODE_MESSAGE | WinBase.PIPE_WAIT, // nMaxInstances,
                1, // nOutBufferSize,
                MAX_BUFFER_SIZE, // nInBufferSize,
                MAX_BUFFER_SIZE, // nDefaultTimeOut,
                (int) TimeUnit.SECONDS.toMillis(30L), // lpSecurityAttributes
                null));
                try {
                    logger.info("Await client connection");
                    assertCallSucceeded("ConnectNamedPipe", Kernel32.INSTANCE.ConnectNamedPipe(hNamedPipe, null));
                    logger.info("Client connected");
                    byte[] readBuffer = new byte[MAX_BUFFER_SIZE];
                    IntByReference lpNumberOfBytesRead = new IntByReference(0);
                    assertCallSucceeded("ReadFile", Kernel32.INSTANCE.ReadFile(hNamedPipe, readBuffer, readBuffer.length, lpNumberOfBytesRead, null));
                    int readSize = lpNumberOfBytesRead.getValue();
                    logger.info("Received client data - length=" + readSize);
                    assertTrue("No data receieved from client", readSize > 0);
                    IntByReference lpNumberOfBytesWritten = new IntByReference(0);
                    assertCallSucceeded("WriteFile", Kernel32.INSTANCE.WriteFile(hNamedPipe, readBuffer, readSize, lpNumberOfBytesWritten, null));
                    logger.info("Echoed client data - length=" + lpNumberOfBytesWritten.getValue());
                    assertEquals("Mismatched write buffer size", readSize, lpNumberOfBytesWritten.getValue());
                    // Flush the pipe to allow the client to read the pipe's contents before disconnecting
                    assertCallSucceeded("FlushFileBuffers", Kernel32.INSTANCE.FlushFileBuffers(hNamedPipe));
                    logger.info("Disconnecting");
                    assertCallSucceeded("DisconnectNamedPipe", Kernel32.INSTANCE.DisconnectNamedPipe(hNamedPipe));
                    logger.info("Disconnected");
                } finally {
                    // clean up
                    assertCallSucceeded("Named pipe handle close", Kernel32.INSTANCE.CloseHandle(hNamedPipe));
                }
            }
        });
        logger.info("Started server - handle=" + server);
        Future<?> client = executors.submit(new Runnable() {

            @Override
            public void run() {
                // based on https://msdn.microsoft.com/en-us/library/windows/desktop/aa365592(v=vs.85).aspx
                assertCallSucceeded("WaitNamedPipe", Kernel32.INSTANCE.WaitNamedPipe(pipeName, (int) TimeUnit.SECONDS.toMillis(15L)));
                logger.info("Connected to server");
                HANDLE hPipe = assertValidHandle("CreateNamedPipe", Kernel32.INSTANCE.CreateFile(pipeName, WinNT.GENERIC_READ | WinNT.GENERIC_WRITE, // no sharing
                0, // default security attributes
                null, // opens existing pipe
                WinNT.OPEN_EXISTING, // default attributes
                0, // no template file
                null));
                try {
                    IntByReference lpMode = new IntByReference(WinBase.PIPE_READMODE_MESSAGE);
                    assertCallSucceeded("SetNamedPipeHandleState", Kernel32.INSTANCE.SetNamedPipeHandleState(hPipe, lpMode, null, null));
                    String expMessage = Thread.currentThread().getName() + " says hello";
                    byte[] expData = expMessage.getBytes();
                    IntByReference lpNumberOfBytesWritten = new IntByReference(0);
                    assertCallSucceeded("WriteFile", Kernel32.INSTANCE.WriteFile(hPipe, expData, expData.length, lpNumberOfBytesWritten, null));
                    logger.info("Sent hello message");
                    assertEquals("Mismatched write buffer size", expData.length, lpNumberOfBytesWritten.getValue());
                    byte[] readBuffer = new byte[MAX_BUFFER_SIZE];
                    IntByReference lpNumberOfBytesRead = new IntByReference(0);
                    assertCallSucceeded("ReadFile", Kernel32.INSTANCE.ReadFile(hPipe, readBuffer, readBuffer.length, lpNumberOfBytesRead, null));
                    int readSize = lpNumberOfBytesRead.getValue();
                    logger.info("Received server data - length=" + readSize);
                    assertTrue("No data receieved from server", readSize > 0);
                    String actMessage = new String(readBuffer, 0, readSize);
                    assertEquals("Mismatched server data", expMessage, actMessage);
                } finally {
                    // clean up
                    assertCallSucceeded("Named pipe handle close", Kernel32.INSTANCE.CloseHandle(hPipe));
                }
            }
        });
        logger.info("Started client - handle=" + client);
        for (Future<?> f : Arrays.asList(client, server)) {
            try {
                f.get(30L, TimeUnit.SECONDS);
                logger.info("Finished " + f);
            } catch (Exception e) {
                logger.warning(e.getClass().getSimpleName() + " while await completion of " + f + ": " + e.getMessage());
            }
        }
    } finally {
        executors.shutdownNow();
    }
}

Example 35 with Kernel32

use of com.sun.jna.platform.win32.Kernel32 in project jna by java-native-access.

the class Kernel32Test method testGetPrivateProfileSection.

public final void testGetPrivateProfileSection() throws IOException {
    final File tmp = File.createTempFile("testGetPrivateProfileSection", ".ini");
    tmp.deleteOnExit();
    final PrintWriter writer = new PrintWriter(new BufferedWriter(new FileWriter(tmp)));
    try {
        writer.println("[X]");
        writer.println("A=1");
        writer.println("B=X");
    } finally {
        writer.close();
    }
    final char[] buffer = new char[9];
    final DWORD len = Kernel32.INSTANCE.GetPrivateProfileSection("X", buffer, new DWORD(buffer.length), tmp.getCanonicalPath());
    assertEquals(len.intValue(), 7);
    assertEquals(new String(buffer), "A=1\0B=X\0\0");
}