* security mode, and negotiated dialect version.
 *
 * @author mbechler
 */
public class Smb2NegotiateResponse extends ServerMessageBlock2Response implements SmbNegotiationResponse {

    private static final Logger log = LoggerFactory.getLogger(Smb2NegotiateResponse.class);

    private int securityMode;
    private int dialectRevision;
    private final byte[] serverGuid = new byte[16];

import jcifs.internal.util.SMBUtil;
import jcifs.util.transport.Response;

/**
 * Test class for Smb2NegotiateResponse functionality
 */
@DisplayName("Smb2NegotiateResponse Tests")
class Smb2NegotiateResponseTest {

    private Configuration mockConfig;
    private CIFSContext mockContext;
    private Smb2NegotiateResponse response;
    private Smb2NegotiateRequest mockRequest;

    @BeforeEach
    void setUp() {

/**
 * Security-focused test cases for Smb2NegotiateResponse input validation.
 * Tests various malformed input scenarios to ensure proper validation and
 * protection against buffer overflow, integer overflow, and other attacks.
 */
public class Smb2NegotiateResponseInputValidationTest {

    private Configuration mockConfig;
    private Smb2NegotiateResponse response;

    @BeforeEach
    public void setUp() {

        setField(transport, "smb2", true);
        assertTrue(transport.isSMB2());

        // 2) smb2 false but negotiated is SMB2 response
        setField(transport, "smb2", false);
        Smb2NegotiateResponse smb2 = new Smb2NegotiateResponse(cfg);
        setField(transport, "negotiated", smb2);
        assertTrue(transport.isSMB2());

        // 3) SMB1 negotiation

     *      jcifs.internal.smb2.ServerMessageBlock2Request)
     */
    @Override
    protected Smb2NegotiateResponse createResponse(final CIFSContext tc, final ServerMessageBlock2Request<Smb2NegotiateResponse> req) {
        return new Smb2NegotiateResponse(tc.getConfig());
    }

    /**
     * {@inheritDoc}
     *
     * @see jcifs.internal.CommonServerMessageBlockRequest#size()

        when(transport.getContext()).thenReturn(context);
        when(session.getTargetHost()).thenReturn("localhost");

        // Mock negotiate response for SMB2
        Smb2NegotiateResponse nego = mock(Smb2NegotiateResponse.class);
        when(transport.getNegotiateResponse()).thenReturn(nego);

        Smb2TreeConnectResponse response = mock(Smb2TreeConnectResponse.class);

        // Given
        request = new Smb2NegotiateRequest(mockConfig, 0);

        // When
        Smb2NegotiateResponse response = request.createResponse(mockContext, request);

        // Then
        assertNotNull(response);
        assertTrue(response instanceof Smb2NegotiateResponse);
    }

    @Test
    @DisplayName("Should calculate size correctly without contexts")

            ServerMessageBlock2Request<?> chain, T andxResponse) throws CIFSException, GeneralSecurityException {
        final Smb2NegotiateResponse negoResp = (Smb2NegotiateResponse) trans.getNegotiateResponse();
        Smb2SessionSetupRequest request = null;
        Smb2SessionSetupResponse response = null;
        SmbException ex = null;
        SSPContext ctx = null;

import org.mockito.quality.Strictness;

import jcifs.Address;
import jcifs.CIFSContext;
import jcifs.Configuration;
import jcifs.DialectVersion;
import jcifs.internal.smb2.nego.Smb2NegotiateResponse;

/**
 * Test Pre-Authentication Integrity improvements
 */
@ExtendWith(MockitoExtension.class)
@MockitoSettings(strictness = Strictness.LENIENT)
public class PreauthIntegrityTest {

    @Mock

            final int n = negotiateWrite(comNeg, true);
            negotiatePeek();

            if (this.smb2) {
                final Smb2NegotiateResponse r = new Smb2NegotiateResponse(getContext().getConfig());
                r.decode(this.sbuf, 4);
                r.received();

                if (r.getDialectRevision() == Smb2Constants.SMB2_DIALECT_ANY) {