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-rw-r--r--org/apache/commons/net/telnet/TelnetClient.java306
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diff --git a/org/apache/commons/net/telnet/TelnetClient.java b/org/apache/commons/net/telnet/TelnetClient.java
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--- a/org/apache/commons/net/telnet/TelnetClient.java
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-/*
- * 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
- *
- * 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;
-
-import java.io.BufferedInputStream;
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.OutputStream;
-
-import org.apache.commons.net.io.FromNetASCIIInputStream;
-import org.apache.commons.net.io.ToNetASCIIOutputStream;
-
-/***
- * The TelnetClient class implements the simple network virtual
- * terminal (NVT) for the Telnet protocol according to RFC 854. It
- * does not implement any of the extra Telnet options because it
- * is meant to be used within a Java program providing automated
- * access to Telnet accessible resources.
- * <p>
- * The class can be used by first connecting to a server using the
- * SocketClient
- * {@link org.apache.commons.net.SocketClient#connect connect}
- * method. Then an InputStream and OutputStream for sending and
- * receiving data over the Telnet connection can be obtained by
- * using the {@link #getInputStream getInputStream() } and
- * {@link #getOutputStream getOutputStream() } methods.
- * When you finish using the streams, you must call
- * {@link #disconnect disconnect } rather than simply
- * closing the streams.
- * <p>
- * <p>
- * @author Daniel F. Savarese
- * @author Bruno D'Avanzo
- ***/
-
-public class TelnetClient extends Telnet
-{
- private InputStream __input;
- private OutputStream __output;
- protected boolean readerThread = true;
-
- /***
- * Default TelnetClient constructor.
- ***/
- public TelnetClient()
- {
- /* TERMINAL-TYPE option (start)*/
- super ("VT100");
- /* TERMINAL-TYPE option (end)*/
- __input = null;
- __output = null;
- }
-
- /* TERMINAL-TYPE option (start)*/
- public TelnetClient(String termtype)
- {
- super (termtype);
- __input = null;
- __output = null;
- }
- /* TERMINAL-TYPE option (end)*/
-
- void _flushOutputStream() throws IOException
- {
- _output_.flush();
- }
- void _closeOutputStream() throws IOException
- {
- _output_.close();
- }
-
- /***
- * Handles special connection requirements.
- * <p>
- * @exception IOException If an error occurs during connection setup.
- ***/
- @Override
- protected void _connectAction_() throws IOException
- {
- super._connectAction_();
- InputStream input;
- TelnetInputStream tmp;
-
- if (FromNetASCIIInputStream.isConversionRequired())
- input = new FromNetASCIIInputStream(_input_);
- else
- input = _input_;
-
-
- tmp = new TelnetInputStream(input, this, readerThread);
- if(readerThread)
- {
- tmp._start();
- }
- // __input CANNOT refer to the TelnetInputStream. We run into
- // blocking problems when some classes use TelnetInputStream, so
- // we wrap it with a BufferedInputStream which we know is safe.
- // This blocking behavior requires further investigation, but right
- // now it looks like classes like InputStreamReader are not implemented
- // in a safe manner.
- __input = new BufferedInputStream(tmp);
- __output = new ToNetASCIIOutputStream(new TelnetOutputStream(this));
- }
-
- /***
- * Disconnects the telnet session, closing the input and output streams
- * as well as the socket. If you have references to the
- * input and output streams of the telnet connection, you should not
- * close them yourself, but rather call disconnect to properly close
- * the connection.
- ***/
- @Override
- public void disconnect() throws IOException
- {
- if (__input != null)
- __input.close();
- if (__output != null)
- __output.close();
- super.disconnect();
- }
-
- /***
- * Returns the telnet connection output stream. You should not close the
- * stream when you finish with it. Rather, you should call
- * {@link #disconnect disconnect }.
- * <p>
- * @return The telnet connection output stream.
- ***/
- public OutputStream getOutputStream()
- {
- return __output;
- }
-
- /***
- * Returns the telnet connection input stream. You should not close the
- * stream when you finish with it. Rather, you should call
- * {@link #disconnect disconnect }.
- * <p>
- * @return The telnet connection input stream.
- ***/
- public InputStream getInputStream()
- {
- return __input;
- }
-
- /***
- * Returns the state of the option on the local side.
- * <p>
- * @param option - Option to be checked.
- * <p>
- * @return The state of the option on the local side.
- ***/
- public boolean getLocalOptionState(int option)
- {
- /* BUG (option active when not already acknowledged) (start)*/
- return (_stateIsWill(option) && _requestedWill(option));
- /* BUG (option active when not already acknowledged) (end)*/
- }
-
- /***
- * Returns the state of the option on the remote side.
- * <p>
- * @param option - Option to be checked.
- * <p>
- * @return The state of the option on the remote side.
- ***/
- public boolean getRemoteOptionState(int option)
- {
- /* BUG (option active when not already acknowledged) (start)*/
- return (_stateIsDo(option) && _requestedDo(option));
- /* BUG (option active when not already acknowledged) (end)*/
- }
- /* open TelnetOptionHandler functionality (end)*/
-
- /* Code Section added for supporting AYT (start)*/
-
- /***
- * Sends an Are You There sequence and waits for the result.
- * <p>
- * @throws InterruptedException
- * @throws IllegalArgumentException
- * @throws IOException
- * <p>
- * @param timeout - Time to wait for a response (millis.)
- * <p>
- * @return true if AYT received a response, false otherwise
- ***/
- public boolean sendAYT(long timeout)
- throws IOException, IllegalArgumentException, InterruptedException
- {
- return (_sendAYT(timeout));
- }
- /* Code Section added for supporting AYT (start)*/
-
- /* open TelnetOptionHandler functionality (start)*/
-
- /***
- * Registers a new TelnetOptionHandler for this telnet client to use.
- * <p>
- * @param opthand - option handler to be registered.
- * <p>
- * @throws InvalidTelnetOptionException
- ***/
- @Override
- public void addOptionHandler(TelnetOptionHandler opthand)
- throws InvalidTelnetOptionException
- {
- super.addOptionHandler(opthand);
- }
- /* open TelnetOptionHandler functionality (end)*/
-
- /***
- * Unregisters a TelnetOptionHandler.
- * <p>
- * @param optcode - Code of the option to be unregistered.
- * <p>
- * @throws InvalidTelnetOptionException
- ***/
- @Override
- public void deleteOptionHandler(int optcode)
- throws InvalidTelnetOptionException
- {
- super.deleteOptionHandler(optcode);
- }
-
- /* Code Section added for supporting spystreams (start)*/
- /***
- * Registers an OutputStream for spying what's going on in
- * the TelnetClient session.
- * <p>
- * @param spystream - OutputStream on which session activity
- * will be echoed.
- ***/
- public void registerSpyStream(OutputStream spystream)
- {
- super._registerSpyStream(spystream);
- }
-
- /***
- * Stops spying this TelnetClient.
- * <p>
- ***/
- public void stopSpyStream()
- {
- super._stopSpyStream();
- }
- /* Code Section added for supporting spystreams (end)*/
-
- /***
- * Registers a notification handler to which will be sent
- * notifications of received telnet option negotiation commands.
- * <p>
- * @param notifhand - TelnetNotificationHandler to be registered
- ***/
- @Override
- public void registerNotifHandler(TelnetNotificationHandler notifhand)
- {
- super.registerNotifHandler(notifhand);
- }
-
- /***
- * Unregisters the current notification handler.
- * <p>
- ***/
- @Override
- public void unregisterNotifHandler()
- {
- super.unregisterNotifHandler();
- }
-
- /***
- * Sets the status of the reader thread.
- * The reader thread status will apply to all subsequent connections
- * <p>
- * @param flag - true switches the reader thread on, false switches it off
- ***/
- public void setReaderThread(boolean flag)
- {
- readerThread = flag;
- }
-
- /***
- * Gets the status of the reader thread.
- * <p>
- * @return true if the reader thread is on, false otherwise
- ***/
- public boolean getReaderThread()
- {
- return (readerThread);
- }
-}
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