* @param pointer the pointer/offset to the string data
     */
    public PacUnicodeString(final short length, final short maxLength, final int pointer) {
        this.length = length;
        this.maxLength = maxLength;
        this.pointer = pointer;
    }

    /**
     * Gets the actual length of the string in bytes.
     *
     * @return the string length
     */
    public short getLength() {

        }

        if (length < 0) {
            failedValidations.incrementAndGet();
            bufferOverflowsPrevented.incrementAndGet();
            throw new SmbException("Negative length: " + length);
        }

        // Check for integer overflow
        if (offset > buffer.length - length) {
            failedValidations.incrementAndGet();

    void testConstructorInitialization() {
        // Given
        int offset = 0;
        int length = TEST_DATA.length;

        // When
        transCallNamedPipe = new TransCallNamedPipe(mockConfig, TEST_PIPE_NAME, TEST_DATA, offset, length);

        // Then
        assertNotNull(transCallNamedPipe);

            throw new IllegalArgumentException("Offsets and length must be non-negative");
        }
        if (srcOffset + length > src.length) {
            throw new IllegalArgumentException(
                    "Source array bounds exceeded: offset=" + srcOffset + ", length=" + length + ", array.length=" + src.length);
        }
        if (dstOffset + length > dst.length) {

     * Tests the {@link PacUnicodeString#check(String)} method with a string of incorrect length.
     */
    @Test
    void testCheck_withInvalidLength_throwsException() {
        // Length is 10 bytes, so expected string length is 5 characters
        PacUnicodeString pacString = new PacUnicodeString((short) 10, (short) 20, 100);
        String testString = "too-long"; // Length is 8

        // Expect a PACDecodingException to be thrown

            buffer[SmbConstants.SMB1_HEADER_LENGTH] = 0;
            SMBUtil.writeInt2(0, buffer, SmbConstants.SMB1_HEADER_LENGTH + 1);

            int length = testBlock.decode(buffer, 0);

            assertNotNull(testBlock.getRawPayload());
            assertEquals(length, testBlock.getRawPayload().length);
        }
    }

    @Nested

            // Write string data at stringOffset
            System.arraycopy(pathBytes, 0, buffer, stringOffset, pathBytes.length);
            buffer[stringOffset + pathBytes.length] = 0;
            buffer[stringOffset + pathBytes.length + 1] = 0;

            offset += referralSize;
            stringOffset += pathBytes.length + 2;
        }

        return buffer;
    }

        // Verify description
        byte[] descr = NetServerEnum2.DESCR[0].getBytes("ASCII");
        byte[] writtenDescr = new byte[descr.length];
        System.arraycopy(dst, 2, writtenDescr, 0, descr.length);
        assertArrayEquals(descr, writtenDescr);

        int currentIndex = 2 + descr.length;
        // Verify level (0x0001)
        assertEquals(1, (dst[currentIndex] & 0xFF) | ((dst[currentIndex + 1] & 0xFF) << 8));

     *
     * @param data the data buffer
     * @param offset the offset in the buffer
     * @param length the length of data to compress
     * @param algorithm the compression algorithm to use
     * @return the compressed data
     * @throws CIFSException if compression fails
     */
    byte[] compress(byte[] data, int offset, int length, int algorithm) throws CIFSException;

    /**

        byte[] outputBuffer = new byte[testData.length + 100];
        int writtenBytes =
                compressionService.decompress(compressed, 0, compressed.length, outputBuffer, 50, CompressionService.COMPRESSION_LZ77);

        assertEquals(testData.length, writtenBytes);

        byte[] extracted = new byte[testData.length];
        System.arraycopy(outputBuffer, 50, extracted, 0, testData.length);