001 /*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements. See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License. You may obtain a copy of the License at
008 *
009 * http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017
018 package org.apache.commons.net.telnet;
019
020 /***
021 * Simple option handler that can be used for options
022 * that don't require subnegotiation.
023 * <p>
024 * @author Bruno D'Avanzo
025 ***/
026 public class SimpleOptionHandler extends TelnetOptionHandler
027 {
028 /***
029 * Constructor for the SimpleOptionHandler. Allows defining desired
030 * initial setting for local/remote activation of this option and
031 * behaviour in case a local/remote activation request for this
032 * option is received.
033 * <p>
034 * @param optcode - option code.
035 * @param initlocal - if set to true, a WILL is sent upon connection.
036 * @param initremote - if set to true, a DO is sent upon connection.
037 * @param acceptlocal - if set to true, any DO request is accepted.
038 * @param acceptremote - if set to true, any WILL request is accepted.
039 ***/
040 public SimpleOptionHandler(int optcode,
041 boolean initlocal,
042 boolean initremote,
043 boolean acceptlocal,
044 boolean acceptremote)
045 {
046 super(optcode, initlocal, initremote,
047 acceptlocal, acceptremote);
048 }
049
050 /***
051 * Constructor for the SimpleOptionHandler. Initial and accept
052 * behaviour flags are set to false
053 * <p>
054 * @param optcode - option code.
055 ***/
056 public SimpleOptionHandler(int optcode)
057 {
058 super(optcode, false, false, false, false);
059 }
060
061 /***
062 * Implements the abstract method of TelnetOptionHandler.
063 * <p>
064 * @param suboptionData - the sequence received, whithout IAC SB & IAC SE
065 * @param suboptionLength - the length of data in suboption_data
066 * <p>
067 * @return always null (no response to subnegotiation)
068 ***/
069 @Override
070 public int[] answerSubnegotiation(int suboptionData[], int suboptionLength)
071 {
072 return null;
073 }
074
075 /***
076 * Implements the abstract method of TelnetOptionHandler.
077 * <p>
078 * @return always null (no response to subnegotiation)
079 ***/
080 @Override
081 public int[] startSubnegotiationLocal()
082 {
083 return null;
084 }
085
086 /***
087 * Implements the abstract method of TelnetOptionHandler.
088 * <p>
089 * @return always null (no response to subnegotiation)
090 ***/
091 @Override
092 public int[] startSubnegotiationRemote()
093 {
094 return null;
095 }
096 }