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Java > Open Source Codes > org > apache > commons > net > telnet > SimpleOptionHandler


1 /*
2  * Copyright 2003-2004 The Apache Software Foundation
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 package org.apache.commons.net.telnet;
17
18 /***
19  * Simple option handler that can be used for options
20  * that don't require subnegotiation.
21  * <p>
22  * @author Bruno D'Avanzo
23  ***/
24 public class SimpleOptionHandler extends TelnetOptionHandler
25 {
26     /***
27      * Constructor for the SimpleOptionHandler. Allows defining desired
28      * initial setting for local/remote activation of this option and
29      * behaviour in case a local/remote activation request for this
30      * option is received.
31      * <p>
32      * @param optcode - option code.
33      * @param initlocal - if set to true, a WILL is sent upon connection.
34      * @param initremote - if set to true, a DO is sent upon connection.
35      * @param acceptlocal - if set to true, any DO request is accepted.
36      * @param acceptremote - if set to true, any WILL request is accepted.
37      ***/
38     public SimpleOptionHandler(int optcode,
39                                 boolean initlocal,
40                                 boolean initremote,
41                                 boolean acceptlocal,
42                                 boolean acceptremote)
43     {
44         super(optcode, initlocal, initremote,
45                                       acceptlocal, acceptremote);
46     }
47
48     /***
49      * Constructor for the SimpleOptionHandler. Initial and accept
50      * behaviour flags are set to false
51      * <p>
52      * @param optcode - option code.
53      ***/
54     public SimpleOptionHandler(int optcode)
55     {
56         super(optcode, false, false, false, false);
57     }
58
59     /***
60      * Implements the abstract method of TelnetOptionHandler.
61      * <p>
62      * @param suboptionData - the sequence received, whithout IAC SB & IAC SE
63      * @param suboptionLength - the length of data in suboption_data
64      * <p>
65      * @return always null (no response to subnegotiation)
66      ***/
67     public int[] answerSubnegotiation(int suboptionData[], int suboptionLength)
68     {
69         return null;
70     }
71
72     /***
73      * Implements the abstract method of TelnetOptionHandler.
74      * <p>
75      * @return always null (no response to subnegotiation)
76      ***/
77     public int[] startSubnegotiationLocal()
78     {
79         return null;
80     }
81
82     /***
83      * Implements the abstract method of TelnetOptionHandler.
84      * <p>
85      * @return always null (no response to subnegotiation)
86      ***/
87     public int[] startSubnegotiationRemote()
88     {
89         return null;
90     }
91 }
92
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