Examples with PointerByReference com.sun.jna.ptr.PointerByReference used on opensource projects

Example 36 with PointerByReference

use of com.sun.jna.ptr.PointerByReference in project jna by java-native-access.

the class TypeLibUtil method getTypeInfo.

/**
     * Gets the type info.
     * 
     * @param index
     *            the index
     * @return the type info
     */
public ITypeInfo getTypeInfo(int index) {
    PointerByReference ppTInfo = new PointerByReference();
    HRESULT hr = this.typelib.GetTypeInfo(new UINT(index), ppTInfo);
    COMUtils.checkRC(hr);
    return new TypeInfo(ppTInfo.getValue());
}

Example 37 with PointerByReference

use of com.sun.jna.ptr.PointerByReference 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 38 with PointerByReference

use of com.sun.jna.ptr.PointerByReference in project jna by java-native-access.

the class TypeInfoUtil method AddressOfMember.

/**
     * Address of member.
     * 
     * @param memid
     *            the memid
     * @param invKind
     *            the inv kind
     * @return the pointer by reference
     */
public PointerByReference AddressOfMember(MEMBERID memid, INVOKEKIND invKind) {
    PointerByReference ppv = new PointerByReference();
    HRESULT hr = this.typeInfo.AddressOfMember(memid, invKind, ppv);
    COMUtils.checkRC(hr);
    return ppv;
}

Example 39 with PointerByReference

use of com.sun.jna.ptr.PointerByReference in project jna by java-native-access.

the class TypeInfoUtil method getFuncDesc.

/**
     * Gets the func desc.
     * 
     * @param index
     *            the index
     * @return the func desc
     */
public FUNCDESC getFuncDesc(int index) {
    PointerByReference ppFuncDesc = new PointerByReference();
    HRESULT hr = this.typeInfo.GetFuncDesc(new UINT(index), ppFuncDesc);
    COMUtils.checkRC(hr);
    return new FUNCDESC(ppFuncDesc.getValue());
}

Example 40 with PointerByReference

use of com.sun.jna.ptr.PointerByReference in project jna by java-native-access.

the class TypeInfoUtil method getRefTypeInfo.

/**
     * Gets the ref type info.
     * 
     * @param hreftype
     *            the hreftype
     * @return the ref type info
     */
public ITypeInfo getRefTypeInfo(HREFTYPE hreftype) {
    PointerByReference ppTInfo = new PointerByReference();
    HRESULT hr = this.typeInfo.GetRefTypeInfo(hreftype, ppTInfo);
    COMUtils.checkRC(hr);
    return new TypeInfo(ppTInfo.getValue());
}