* implementations.
     * 
     * Changes in between these calls (as long as the file is open) are buffered by the server, so iteratively calling
     * this method should provide all changes (size of that buffer can be adjusted through
     * {@link jcifs.Configuration#getNotifyBufferSize()}).

    private void reset() {
        url = null;
        sae = null;
    }

/**
Set the default <tt>NtlmAuthenticator</tt>. Once the default authenticator is set it cannot be changed. Calling this metho again will have no effect.
 */

    public synchronized static void setDefault( NtlmAuthenticator a ) {
        if( auth != null ) {
            return;
        }
        auth = a;
    }

import jcifs.CIFSContext;
import jcifs.DfsReferralData;
import jcifs.DfsResolver;
import jcifs.SmbTransport;
import jcifs.internal.dfs.DfsReferralDataImpl;
import jcifs.internal.dfs.DfsReferralDataInternal;


/**
 * Caching DFS resolver implementation
 * 
 * @internal
 */
public class DfsImpl implements DfsResolver {

    private static final DfsReferralDataImpl NEGATIVE_ENTRY = new DfsReferralDataImpl();

            if( andxOffset == 0 ) { /* Snap server workaround */
                andxCommand = (byte)0xFF;
            }

            /*
             * no point in calling readParameterWordsWireFormat if there are no more
             * parameter words. besides, win98 doesn't return "OptionalSupport" field
             */
 
            if( wordCount > 2 ) {

                    case NOT_LISTENING_CALLED:
                        result += "Not listening on called name";
                        break;
                    case NOT_LISTENING_CALLING:
                        result += "Not listening for calling name";
                        break;
                    case CALLED_NOT_PRESENT:
                        result += "Called name not present";
                        break;

     * aka TRUNCATE_EXISTING
     */

    static final int FILE_OVERWRITE    = 0x4;

    /* Open the file and overwrite it's contents or create it if it does not exist
     * aka CREATE_ALWAYS (according to the wire when calling CreateFile)
     */

    static final int FILE_OVERWRITE_IF = 0x5;


    // create options
    static final int FILE_WRITE_THROUGH           = 0x00000002;

            if ( this.andxOffset == 0 ) { /* Snap server workaround */
                this.andxCommand = (byte) 0xFF;
            }

            /*
             * no point in calling readParameterWordsWireFormat if there are no more
             * parameter words. besides, win98 doesn't return "OptionalSupport" field
             */

            if ( this.wordCount > 2 ) {

                break;
            case NOT_LISTENING_CALLED:
                result += "Not listening on called name";
                break;
            case NOT_LISTENING_CALLING:
                result += "Not listening for calling name";
                break;
            case CALLED_NOT_PRESENT:
                result += "Called name not present";
                break;
            case NO_RESOURCES:

     * The operating system detects a change in file size only when the file is written to the disk. For operating
     * systems that use extensive caching, detection occurs only when the cache is sufficiently flushed.s
     */
    public static final int FILE_NOTIFY_CHANGE_SIZE = 0x00000008;

    /**

        // padding is alwas binary 1 followed by binary 0s
        byte[] tail = new byte[padLen + 8];
        tail[0] = (byte)0x80;

        // append length before final transform:
        // save number of bits, casting the long to an array of 8 bytes
        // save low-order byte first.
        for (int i = 0; i < 8; i++)
            tail[padLen + i] = (byte)((count * 8) >>> (8 * i));

        engineUpdate(tail, 0, tail.length);