Android Open Source - android-chat-telnet Terminal Type Option Handler






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License

The source code is released under:

GNU Lesser General Public License

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Java Source Code

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 */*from www  . j  a va  2s  . c o m*/
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.commons.net.telnet;

/***
 * Implements the telnet terminal type option RFC 1091.
 * <p>
 * @author Bruno D'Avanzo
 ***/
public class TerminalTypeOptionHandler extends TelnetOptionHandler
{
    /***
     * Terminal type
     ***/
    private final String termType;

    /***
     * Terminal type option
     ***/
    protected static final int TERMINAL_TYPE = 24;

    /***
     * Send (for subnegotiation)
     ***/
    protected static final int TERMINAL_TYPE_SEND =  1;

    /***
     * Is (for subnegotiation)
     ***/
    protected static final int TERMINAL_TYPE_IS =  0;

    /***
     * Constructor for the TerminalTypeOptionHandler. Allows defining desired
     * initial setting for local/remote activation of this option and
     * behaviour in case a local/remote activation request for this
     * option is received.
     * <p>
     * @param termtype - terminal type that will be negotiated.
     * @param initlocal - if set to true, a WILL is sent upon connection.
     * @param initremote - if set to true, a DO is sent upon connection.
     * @param acceptlocal - if set to true, any DO request is accepted.
     * @param acceptremote - if set to true, any WILL request is accepted.
     ***/
    public TerminalTypeOptionHandler(String termtype,
                                boolean initlocal,
                                boolean initremote,
                                boolean acceptlocal,
                                boolean acceptremote)
    {
        super(TelnetOption.TERMINAL_TYPE, initlocal, initremote,
                                      acceptlocal, acceptremote);
        termType = termtype;
    }

    /***
     * Constructor for the TerminalTypeOptionHandler. Initial and accept
     * behaviour flags are set to false
     * <p>
     * @param termtype - terminal type that will be negotiated.
     ***/
    public TerminalTypeOptionHandler(String termtype)
    {
        super(TelnetOption.TERMINAL_TYPE, false, false, false, false);
        termType = termtype;
    }

    /***
     * Implements the abstract method of TelnetOptionHandler.
     * <p>
     * @param suboptionData - the sequence received, whithout IAC SB & IAC SE
     * @param suboptionLength - the length of data in suboption_data
     * <p>
     * @return terminal type information
     ***/
    @Override
    public int[] answerSubnegotiation(int suboptionData[], int suboptionLength)
    {
        if ((suboptionData != null) && (suboptionLength > 1)
            && (termType != null))
        {
            if ((suboptionData[0] == TERMINAL_TYPE)
                && (suboptionData[1] == TERMINAL_TYPE_SEND))
            {
                int response[] = new int[termType.length() + 2];

                response[0] = TERMINAL_TYPE;
                response[1] = TERMINAL_TYPE_IS;

                for (int ii = 0; ii < termType.length(); ii++)
                {
                    response[ii + 2] = termType.charAt(ii);
                }

                return response;
            }
        }
        return null;
    }

    /***
     * Implements the abstract method of TelnetOptionHandler.
     * <p>
     * @return always null (no response to subnegotiation)
     ***/
    @Override
    public int[] startSubnegotiationLocal()
    {
        return null;
    }

    /***
     * Implements the abstract method of TelnetOptionHandler.
     * <p>
     * @return always null (no response to subnegotiation)
     ***/
    @Override
    public int[] startSubnegotiationRemote()
    {
        return null;
    }
}




Java Source Code List

com.anarchy.anarchytelnet.AnarchyTelnet.java
com.anarchy.anarchytelnet.EnvoieMessage.java
com.anarchy.anarchytelnet.Main.java
com.anarchy.anarchytelnet.MessageReceiver.java
org.apache.commons.net.DatagramSocketClient.java
org.apache.commons.net.DatagramSocketFactory.java
org.apache.commons.net.DefaultDatagramSocketFactory.java
org.apache.commons.net.DefaultSocketFactory.java
org.apache.commons.net.MalformedServerReplyException.java
org.apache.commons.net.PrintCommandListener.java
org.apache.commons.net.ProtocolCommandEvent.java
org.apache.commons.net.ProtocolCommandListener.java
org.apache.commons.net.ProtocolCommandSupport.java
org.apache.commons.net.SocketClient.java
org.apache.commons.net.io.CRLFLineReader.java
org.apache.commons.net.io.CopyStreamAdapter.java
org.apache.commons.net.io.CopyStreamEvent.java
org.apache.commons.net.io.CopyStreamException.java
org.apache.commons.net.io.CopyStreamListener.java
org.apache.commons.net.io.DotTerminatedMessageReader.java
org.apache.commons.net.io.DotTerminatedMessageWriter.java
org.apache.commons.net.io.FromNetASCIIInputStream.java
org.apache.commons.net.io.FromNetASCIIOutputStream.java
org.apache.commons.net.io.SocketInputStream.java
org.apache.commons.net.io.SocketOutputStream.java
org.apache.commons.net.io.ToNetASCIIInputStream.java
org.apache.commons.net.io.ToNetASCIIOutputStream.java
org.apache.commons.net.io.Util.java
org.apache.commons.net.io.package-info.java
org.apache.commons.net.telnet.EchoOptionHandler.java
org.apache.commons.net.telnet.InvalidTelnetOptionException.java
org.apache.commons.net.telnet.SimpleOptionHandler.java
org.apache.commons.net.telnet.SuppressGAOptionHandler.java
org.apache.commons.net.telnet.TelnetClient.java
org.apache.commons.net.telnet.TelnetCommand.java
org.apache.commons.net.telnet.TelnetInputListener.java
org.apache.commons.net.telnet.TelnetInputStream.java
org.apache.commons.net.telnet.TelnetNotificationHandler.java
org.apache.commons.net.telnet.TelnetOptionHandler.java
org.apache.commons.net.telnet.TelnetOption.java
org.apache.commons.net.telnet.TelnetOutputStream.java
org.apache.commons.net.telnet.Telnet.java
org.apache.commons.net.telnet.TerminalTypeOptionHandler.java
org.apache.commons.net.telnet.WindowSizeOptionHandler.java
org.apache.commons.net.telnet.package-info.java
org.apache.commons.net.util.Base64.java
org.apache.commons.net.util.Charsets.java
org.apache.commons.net.util.KeyManagerUtils.java
org.apache.commons.net.util.ListenerList.java
org.apache.commons.net.util.SSLContextUtils.java
org.apache.commons.net.util.SubnetUtils.java
org.apache.commons.net.util.TrustManagerUtils.java
org.apache.commons.net.util.package-info.java
org.apache.commons.net.package-info.java