if ( tf.getConfig().isDfsDisabled() || tf.getCredentials().getUserDomain() == null || tf.getCredentials().getUserDomain().isEmpty() ) {
            return null;
        }

        if ( this._domains != null && System.currentTimeMillis() > this._domains.expiration ) {
            this._domains = null;
        }
        if ( this._domains != null )
            return this._domains.map;
        try {

                break;
            }
        }
        if (authMethod == null) return null;
        NtlmMessage message = (authorization != null) ?
                new Type2Message(Base64.decode(authorization)) : null;
        reconnect();
        if (message == null) {
            message = new Type1Message();
            if (LM_COMPATIBILITY > 2) {

        if( domain == null || username == null ||
                                    ansiHash == null || unicodeHash == null ) {
            throw new IllegalArgumentException( "External credentials cannot be null" );
        }
        this.domain = domain;
        this.username = username;
        this.password = null;
        this.challenge = challenge;
        this.ansiHash = ansiHash;

            this.thread = null;
            this.state = 6;
            break;
        default:
            log.error("Invalid state: " + this.state);
            this.thread = null;
            this.state = 6;
            break;
        }

        if ( ioe != null )
            throw ioe;

        return false;
    }


    @Override

        boolean wasOpen = isOpen();
        this.open = false;
        if ( this.input != null ) {
            this.input.close();
            this.input = null;
        }

        if ( this.output != null ) {
            this.output.close();
            this.output = null;
        }

        try {
            if ( wasOpen ) {
                this.handle.close();
            }

            di += 4;
        }
        return dst;
    }

    int type;
    String domainName = null;
    String acctName = null;
    String origin_server = null;
    CIFSContext origin_ctx = null;


    /**
     * Construct a SID from it's binary representation.
     *
     * 
     * @param src
     * @param si
     */

     */
    protected static DcerpcBinding parseBinding ( String str ) throws DcerpcException {
        int state, mark, si;
        char[] arr = str.toCharArray();
        String proto = null, key = null;
        DcerpcBinding binding = null;

        state = mark = si = 0;
        do {
            char ch = arr[ si ];

            switch ( state ) {
            case 0:
                if ( ch == ':' ) {

            }
        }
    }


    public static byte[] decrypt ( byte[] data, Key key, int type ) throws GeneralSecurityException {
        Cipher cipher = null;
        byte[] decrypt = null;

        switch ( type ) {
        case KerberosConstants.DES_ENC_TYPE:
            decrypt = decryptDES(data, key, cipher);
            break;
        case KerberosConstants.RC4_ENC_TYPE:

        try {
            if ( this.handle.isValid() ) {
                this.handle.close();
            }
        }
        finally {
            this.file.clearAttributeCache();
            this.tmp = null;
        }
    }


    /**
     * Writes the specified byte to this file output stream.
     *
     * @throws IOException
     *             if a network error occurs
     */

    }


    /**
     * @param keybytes
     * @return
     */
    private static KerberosKey makeKey ( byte[] keybytes, int etype ) {
        return new KerberosKey(null, keybytes, etype, 0);
    }


    private static void checkBytes ( byte[] expect, byte[] have ) {
        if ( !Arrays.equals(expect, have) ) {