import jcifs.internal.util.SMBUtil;

/**
 * SMB1 COM_LOCKING_ANDX command implementation.
 *
 * This command locks or unlocks byte ranges within a file. It can also
 * be used to break oplocks and change oplock levels.
 *
 * @author mbechler
 */
public class SmbComLockingAndX extends AndXServerMessageBlock {

    private int fid;
    private byte typeOfLock;
    private byte newOpLockLevel;

    /**
     * Share flag indicating that access-based directory enumeration is enabled.
     */
    public static final int SMB2_SHAREFLAG_ACCESS_BASED_DIRECTORY_ENUM = 0x800;
    /**
    * Share flag indicating that level 2 oplocks are forced on this share.
    */
    public static final int SMB2_SHAREFLAG_FORCE_LEVEL2_OPLOCK = 0x1000;
    /**
     * Share flag indicating that hash generation V1 is enabled for this share.
     */

    /**
     * Reads a byte of data from this input stream.
     *
     * @throws IOException if a network error occurs
     */

    @Override
    public int read() throws IOException {
        // need oplocks to cache otherwise use BufferedInputStream
        if (read(tmp, 0, 1) == -1) {
            return -1;
        }
        return tmp[0] & 0xFF;
    }

    /**