* @param sourceIp the source IP address
     * @return true if attempt is allowed, false if rate limited
     * @throws SmbException if account is locked out
     */
    public boolean checkAttempt(String username, String sourceIp) throws SmbException {
        if (closed.get()) {
            throw new IllegalStateException("Rate limiter is closed");
        }

        // Check global rate limit

        }

        @Test
        @DisplayName("dispose wraps GSSException into SmbException")
        void dispose_failure_wraps() throws Exception {
            doThrow(new GSSException(GSSException.FAILURE)).when(gssContext).dispose();
            SmbException ex = assertThrows(SmbException.class, () -> ctx.dispose());
            assertTrue(ex.getMessage().contains("Context disposal failed"));
        }

            rpc.domains.count = 0;
            rpc.domains.domains = new lsarpc.LsarTrustInformation[0];
            return null;
        }).when(handle).sendrecv(any());

        SmbException ex = assertThrows(SmbException.class, () -> cache.resolveSids(handle, policy, sids));
        assertEquals(NtStatus.NT_STATUS_ACCESS_DENIED, ex.getNtStatus());
    }

    @Test

import org.junit.jupiter.params.ParameterizedTest;
import org.junit.jupiter.params.provider.CsvSource;
import org.junit.jupiter.params.provider.ValueSource;

import jcifs.smb.SID;
import jcifs.smb.SmbException;

/**
 * Test class for ACE (Access Control Entry)
 */
class ACETest {

    private ACE ace;
    private byte[] testBuffer;

    @BeforeEach
    void setUp() {
        ace = new ACE();
    }

     * @param textual the textual representation of the SID
     * @throws SmbException if the textual format is invalid
     */
    public SID(final String textual) throws SmbException {
        final StringTokenizer st = new StringTokenizer(textual, "-");
        if (st.countTokens() < 3 || !st.nextToken().equals("S")) {
            // need S-N-M
            throw new SmbException("Bad textual SID format: " + textual);
        }

        }

        @Override
        public SSPContext createContext(CIFSContext tc, String targetDomain, String host, byte[] initialToken, boolean doSigning)
                throws SmbException {
            // Not used within these tests
            throw new SmbException("not used in tests");
        }

        @Override
        public Subject getSubject() {
            return null; // not relevant for renew() behavior
        }

package jcifs.dcerpc.msrpc;

import java.io.IOException;

import jcifs.dcerpc.DcerpcError;
import jcifs.dcerpc.DcerpcException;
import jcifs.dcerpc.DcerpcHandle;
import jcifs.dcerpc.rpc;
import jcifs.smb.SmbException;

/**
 * Handle for Security Account Manager (SAM) policy operations.
 * This class represents an open handle to a SAM server and provides
 * high-level access to SAM database operations.
 */

                    setResults(qr, new FileEntry[] { fe3 });
                    return qr;
                } else {
                    // Third query: no more files
                    throw new SmbException(NtStatus.NT_STATUS_NO_MORE_FILES, false);
                }
            }
            return null;
        }).when(tree).send(any(Request.class));

        // Act: create iterator and enumerate

 * <p>
 * See <a href="../../../authhandler.html">jCIFS Exceptions and NtlmAuthenticator</a> for more information about <code>SmbAuthException</code>.
 */

public class SmbAuthException extends SmbException {

    SmbAuthException(final int errcode) {
        super(errcode, null);
    }

    }

    private long extractNtStatus(Throwable cause) {
        if (cause instanceof SmbException) {
            return ((SmbException) cause).getNtStatus();
        }
        return 0;
    }

    private String extractServerMessage(Throwable cause) {
        if (cause instanceof SmbException) {
            // Try to get server message from SMB exception
            return cause.getMessage();
        }