descr = DESCR.getBytes("ASCII");
        } catch (final UnsupportedEncodingException uee) {
            return 0;
        }

        writeInt2(NET_SHARE_ENUM, dst, dstIndex);
        dstIndex += 2;
        System.arraycopy(descr, 0, dst, dstIndex, descr.length);
        dstIndex += descr.length;
        writeInt2(0x0001, dst, dstIndex);
        dstIndex += 2;
        writeInt2(maxDataCount, dst, dstIndex);
        dstIndex += 2;

    /**
     * Returns the singleton LogStream instance.
     *
     * @return the LogStream instance
     */
    public static LogStream getInstance() {
        if (inst == null) {
            setInstance(System.err);
        }
        return inst;
    }

    String[] NT_STATUS_MESSAGES = { "The operation completed successfully.", "A device attached to the system is not functioning.",
            "Incorrect function.", "The parameter is incorrect.", "Invalid access to memory location.", "The handle is invalid.",
            "The parameter is incorrect.", "The system cannot find the file specified.", "The system cannot find the file specified.",

            offset += 2;
            System.arraycopy(domain, 0, targetInfo, offset, domainLength);
            offset += domainLength;
        }
        if (serverLength > 0) {
            writeUShort(targetInfo, offset, 1);
            offset += 2;
            writeUShort(targetInfo, offset, serverLength);
            offset += 2;
            System.arraycopy(server, 0, targetInfo, offset, serverLength);
        }

 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

package jcifs.smb1.dcerpc.msrpc;

import jcifs.smb1.dcerpc.ndr.NdrLong;
import jcifs.smb1.smb1.FileEntry;
import jcifs.smb1.smb1.SmbShareInfo;

/**
 * MSRPC implementation for enumerating DFS roots.
 * This class provides functionality to enumerate Distributed File System (DFS)
 * roots on a server using the NetDFS RPC interface.

 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

package jcifs.dcerpc.msrpc;

import jcifs.dcerpc.ndr.NdrLong;
import jcifs.internal.smb1.net.SmbShareInfo;
import jcifs.smb.FileEntry;

/**
 * MSRPC implementation for enumerating DFS roots.
 * This class provides functionality to enumerate Distributed File System (DFS)
 * roots on a server using the NetDFS RPC interface.
 */

            System.arraycopy(NTLMSSP_SIGNATURE, 0, type2, 0, 8);
            writeULong(type2, 8, 2);
            writeSecurityBuffer(type2, 12, data, target);
            writeULong(type2, 20, flags);
            System.arraycopy(challenge != null ? challenge : new byte[8], 0, type2, 24, 8);
            if (context != null) {
                System.arraycopy(context, 0, type2, 32, 8);
            }

        // all fixed inputs go into the suffix:
        // + label
        System.arraycopy(label, 0, suffix, 0, label.length);
        // + 1 byte 0x00
        // + context
        System.arraycopy(context, 0, suffix, label.length + 1, context.length);
        // + 4 byte (== r bits) big endian encoding of L
        suffix[suffix.length - 1] = (byte) 128;

        Encdec.enc_uint32le(0x00000000, temp, 4); // Reserved
        Encdec.enc_uint64le(nanos1601, temp, 8);
        System.arraycopy(clientChallenge, 0, temp, 16, 8);
        Encdec.enc_uint32le(0x00000000, temp, 24); // Unknown
        if (avPairs != null) {
            System.arraycopy(avPairs, 0, temp, 28, avPairsLength);
        }
        Encdec.enc_uint32le(0x00000000, temp, 28 + avPairsLength); // mystery bytes!

    private final Map<String, IpAttempts> ipAttempts = new ConcurrentHashMap<>();
    private final AtomicInteger globalAttemptsInCurrentWindow = new AtomicInteger(0);
    private final AtomicLong currentWindowStart = new AtomicLong(System.currentTimeMillis());

    // Cleanup scheduler
    private final ScheduledExecutorService cleanupScheduler;
    private final AtomicBoolean closed = new AtomicBoolean(false);

    // Statistics