1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17
18 package org.apache.commons.net.telnet;
19
20 /***
21 * Simple option handler that can be used for options
22 * that don't require subnegotiation.
23 * <p>
24 * @author Bruno D'Avanzo
25 ***/
26 public class SimpleOptionHandler extends TelnetOptionHandler
27 {
28 /***
29 * Constructor for the SimpleOptionHandler. Allows defining desired
30 * initial setting for local/remote activation of this option and
31 * behaviour in case a local/remote activation request for this
32 * option is received.
33 * <p>
34 * @param optcode - option code.
35 * @param initlocal - if set to true, a WILL is sent upon connection.
36 * @param initremote - if set to true, a DO is sent upon connection.
37 * @param acceptlocal - if set to true, any DO request is accepted.
38 * @param acceptremote - if set to true, any WILL request is accepted.
39 ***/
40 public SimpleOptionHandler(int optcode,
41 boolean initlocal,
42 boolean initremote,
43 boolean acceptlocal,
44 boolean acceptremote)
45 {
46 super(optcode, initlocal, initremote,
47 acceptlocal, acceptremote);
48 }
49
50 /***
51 * Constructor for the SimpleOptionHandler. Initial and accept
52 * behaviour flags are set to false
53 * <p>
54 * @param optcode - option code.
55 ***/
56 public SimpleOptionHandler(int optcode)
57 {
58 super(optcode, false, false, false, false);
59 }
60
61 /***
62 * Implements the abstract method of TelnetOptionHandler.
63 * <p>
64 * @param suboptionData - the sequence received, whithout IAC SB & IAC SE
65 * @param suboptionLength - the length of data in suboption_data
66 * <p>
67 * @return always null (no response to subnegotiation)
68 ***/
69 @Override
70 public int[] answerSubnegotiation(int suboptionData[], int suboptionLength)
71 {
72 return null;
73 }
74
75 /***
76 * Implements the abstract method of TelnetOptionHandler.
77 * <p>
78 * @return always null (no response to subnegotiation)
79 ***/
80 @Override
81 public int[] startSubnegotiationLocal()
82 {
83 return null;
84 }
85
86 /***
87 * Implements the abstract method of TelnetOptionHandler.
88 * <p>
89 * @return always null (no response to subnegotiation)
90 ***/
91 @Override
92 public int[] startSubnegotiationRemote()
93 {
94 return null;
95 }
96 }