// file attribute encoding
    /**
     * File is marked read-only
     */
    static final int ATTR_READONLY = 0x01;
    /**
     * File is marked hidden
     */
    static final int ATTR_HIDDEN = 0x02;
    /**
     * File is marked a system file
     */
    static final int ATTR_SYSTEM = 0x04;
    /**
     * File is marked a volume
     */
    static final int ATTR_VOLUME = 0x08;
    /**

     */
    public boolean isDisconnected () {
        return this.state == 4 || this.state == 5 || this.state == 6 || this.state == 0;
    }


    /**
     * @return whether the transport is marked failed
     */
    public boolean isFailed () {
        return this.state == 5 || this.state == 6;
    }


    /**
     * Send a request message and recieve response
     * 
     * @param request

     * @param req
     *            The request being serviced.
     * @param resp
     *            The response.
     * @param challenge
     *            The domain controller challenge.
     * @return credentials passed in the servlet request
     * @throws IOException
     *             If an IO error occurs.
     */

    protected String wildcard;
    protected int attributes;

/* This filter can be considerably more efficient than other file filters
 * as the specifed wildcard and attributes are passed to the server for
 * filtering there (although attributes are largely ignored by servers
 * they are filtered locally by the default accept method).
 */
    public DosFileFilter( String wildcard, int attributes ) {

    /**
     * Tests to see if the file this SmbResource represents is marked as
     * hidden. This method will also return true for shares with names that
     * end with '$' such as <code>IPC$</code> or <code>C$</code>.
     *
     * @return <code>true</code> if the <code>SmbResource</code> is marked as being hidden
     * @throws CIFSException
     */
    boolean isHidden () throws CIFSException;

/**
 * This is an implementation of the HMACT64 keyed hashing algorithm.
 * HMACT64 is defined by Luke Leighton as a modified HMAC-MD5 (RFC 2104)
 * in which the key is truncated at 64 bytes (rather than being hashed
 * via MD5).
 */ 
public class HMACT64 extends MessageDigest implements Cloneable {

    private static final int BLOCK_LENGTH = 64;

    private static final byte IPAD = (byte) 0x36;

/**
 * This is an implementation of the HMACT64 keyed hashing algorithm.
 * HMACT64 is defined by Luke Leighton as a modified HMAC-MD5 (RFC 2104)
 * in which the key is truncated at 64 bytes (rather than being hashed
 * via MD5).
 */
class HMACT64 extends MessageDigest implements Cloneable {

    private static final int BLOCK_LENGTH = 64;

    private static final byte IPAD = (byte) 0x36;

        return ( flags & FLAGS_RESPONSE ) == FLAGS_RESPONSE;
    }

    /* 
     * For this packet deconstruction technique to work for
     * other networking protocols the InputStream may need
     * to be passed to the readXxxWireFormat methods. This is
     * actually purer. However, in the case of smb we know the
     * wordCount and byteCount. And since every subclass of
     * ServerMessageBlock would have to perform the same read

    }


    /*
     * For this packet deconstruction technique to work for
     * other networking protocols the InputStream may need
     * to be passed to the readXxxWireFormat methods. This is
     * actually purer. However, in the case of smb we know the
     * wordCount and byteCount. And since every subclass of
     * ServerMessageBlock would have to perform the same read

 * Tests to see if the file this <code>SmbFile</code> represents
 * exists and is not marked read-only. By default, resources are
 * considered to be read-only and therefore for <code>smb1://</code>,
 * <code>smb1://workgroup/</code>, and <code>smb1://server/</code> resources
 * will be read-only.
 *
 * @return  <code>true</code> if the resource exists is not marked
 *          read-only
 */