* environment.
     * 
     * @param tc
     *            context to use
     */
    public Type2Message ( CIFSContext tc ) {
        this(tc, getDefaultFlags(tc), null, null);
    }


    /**
     * Creates a Type-2 message in response to the given Type-1 message
     * using default values from the current environment.
     * 
     * @param tc
     *            context to use
     * @param type1

     */
    public NtlmPasswordAuthentication doAuthentication ( CIFSContext tc, HttpServletRequest req, HttpServletResponse resp, byte[] challenge )
            throws IOException {
        return authenticate(tc, req, resp, challenge);
    }


    /**
     * Performs NTLM authentication for the servlet request.
     * 
     * @param tc
     *            context to use
     *
     * @param req

    /**
     * 
     * @param tc
     * @param negotiated
     * @param andx
     * @param cred
     * @throws SmbException
     * @throws GeneralSecurityException
     */
    public SmbComSessionSetupAndX ( CIFSContext tc, SmbComNegotiateResponse negotiated, ServerMessageBlock andx, Object cred )
            throws SmbException, GeneralSecurityException {
        super(tc.getConfig(), SMB_COM_SESSION_SETUP_ANDX, andx);

    @Override
    public Map<jcifs.SID, List<jcifs.SID>> getLocalGroupsMap ( CIFSContext tc, String authorityServerName, int flags ) throws CIFSException {
        SID domSid = getServerSid(tc, authorityServerName);
        synchronized ( this.sidCache ) {
            try ( DcerpcHandle handle = DcerpcHandle.getHandle("ncacn_np:" + authorityServerName + "[\\PIPE\\samr]", tc) ) {
                samr.SamrSamArray sam = new samr.SamrSamArray();

        Set<FileEntry> set = new HashSet<>();

        if ( tc.getDfs().isTrustedDomain(tc, locator.getServer()) ) {
            /*
             * The server name is actually the name of a trusted
             * domain. Add DFS roots to the list.
             */
            try {
                entries = doDfsRootEnum(tc, locator, locator.getAddress());
                for ( int ei = 0; ei < entries.length; ei++ ) {

                }
                if ( ( !foundKerberos || this.forceFallback ) && this.canFallback && tc.getConfig().isAllowNTLMFallback() ) {
                    log.debug("Falling back to NTLM authentication");
                    return super.createContext(tc, targetDomain, host, initialToken, doSigning);
                }
                else if ( !foundKerberos ) {

     * environment.
     * 
     * @param tc
     *            context to use
     */
    public Type3Message ( CIFSContext tc ) {
        setFlags(getDefaultFlags(tc));
        setDomain(tc.getConfig().getDefaultDomain());
        setUser(tc.getConfig().getDefaultUsername());
        setWorkstation(tc.getNameServiceClient().getLocalHost().getHostName());
    }


    /**

        return getSmbTransport(tc, address, port, tc.getConfig().getLocalAddr(), tc.getConfig().getLocalPort(), null, nonPooled);
    }


    @Override
    public SmbTransportImpl getSmbTransport ( CIFSContext tc, Address address, int port, boolean nonPooled, boolean forceSigning ) {

    public boolean isGroupAddress ( CIFSContext tc ) throws UnknownHostException {
        checkData(tc);
        return this.groupName;
    }


    @Override
    public int getNodeType ( CIFSContext tc ) throws UnknownHostException {
        checkData(tc);
        return this.nodeType;
    }


    @Override
    public boolean isBeingDeleted ( CIFSContext tc ) throws UnknownHostException {

    void resolveSids ( CIFSContext tc, String authorityServerName, SID[] sids, int off, int len ) throws CIFSException;


    /**
     * @param tc
     * @param authorityServerName
     * @param domsid
     * @param rid
     * @param flags
     * @return the SIDs of the group members
     * @throws CIFSException
     */