commons-net.jar Source Code

commons-net.jar is the bytecode of Apache Commons Net library, which implements the client side of many basic Internet protocols.

Apache Commons Net Source Code files are provided in the binary packge (commons-net-3.8.0-bin.zip). You can download it at Apache Commons Net Website.

The source code of commons-net-3.8.0.jar is provided below:

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org/apache/commons/net/PrintCommandListener.java

/*
 * 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;

import java.io.PrintStream;
import java.io.PrintWriter;

/**
 * This is a support class for some of the example programs.  It is
 * a sample implementation of the ProtocolCommandListener interface
 * which just prints out to a specified stream all command/reply traffic.
 *
 * @since 2.0
 */

public class PrintCommandListener implements ProtocolCommandListener
{
    private final PrintWriter writer;
    private final boolean nologin;
    private final char eolMarker;
    private final boolean directionMarker;

    /**
     * Create the default instance which prints everything.
     *
     * @param stream where to write the commands and responses
     * e.g. System.out
     * @since 3.0
     */
    public PrintCommandListener(final PrintStream stream)
    {
        this(new PrintWriter(stream));
    }

    /**
     * Create an instance which optionally suppresses login command text
     * and indicates where the EOL starts with the specified character.
     *
     * @param stream where to write the commands and responses
     * @param suppressLogin if {@code true}, only print command name for login
     *
     * @since 3.0
     */
    public PrintCommandListener(final PrintStream stream, final boolean suppressLogin) {
        this(new PrintWriter(stream), suppressLogin);
    }

    /**
     * Create an instance which optionally suppresses login command text
     * and indicates where the EOL starts with the specified character.
     *
     * @param stream where to write the commands and responses
     * @param suppressLogin if {@code true}, only print command name for login
     * @param eolMarker if non-zero, add a marker just before the EOL.
     *
     * @since 3.0
     */
    public PrintCommandListener(final PrintStream stream, final boolean suppressLogin, final char eolMarker) {
        this(new PrintWriter(stream), suppressLogin, eolMarker);
    }

    /**
     * Create an instance which optionally suppresses login command text
     * and indicates where the EOL starts with the specified character.
     *
     * @param stream where to write the commands and responses
     * @param suppressLogin if {@code true}, only print command name for login
     * @param eolMarker if non-zero, add a marker just before the EOL.
     * @param showDirection if {@code true}, add {@code "> "} or {@code "< "} as appropriate to the output
     *
     * @since 3.0
     */
    public PrintCommandListener(final PrintStream stream, final boolean suppressLogin, final char eolMarker,
            final boolean showDirection) {
        this(new PrintWriter(stream), suppressLogin, eolMarker, showDirection);
    }

    /**
     * Create the default instance which prints everything.
     *
     * @param writer where to write the commands and responses
     */
    public PrintCommandListener(final PrintWriter writer)
    {
        this(writer, false);
    }

    /**
     * Create an instance which optionally suppresses login command text.
     *
     * @param writer where to write the commands and responses
     * @param suppressLogin if {@code true}, only print command name for login
     *
     * @since 3.0
     */
    public PrintCommandListener(final PrintWriter writer, final boolean suppressLogin)
    {
        this(writer, suppressLogin, (char) 0);
    }

    /**
     * Create an instance which optionally suppresses login command text
     * and indicates where the EOL starts with the specified character.
     *
     * @param writer where to write the commands and responses
     * @param suppressLogin if {@code true}, only print command name for login
     * @param eolMarker if non-zero, add a marker just before the EOL.
     *
     * @since 3.0
     */
    public PrintCommandListener(final PrintWriter writer, final boolean suppressLogin, final char eolMarker)
    {
        this(writer, suppressLogin, eolMarker, false);
    }

    /**
     * Create an instance which optionally suppresses login command text
     * and indicates where the EOL starts with the specified character.
     *
     * @param writer where to write the commands and responses
     * @param suppressLogin if {@code true}, only print command name for login
     * @param eolMarker if non-zero, add a marker just before the EOL.
     * @param showDirection if {@code true}, add {@code ">} " or {@code "< "} as appropriate to the output
     *
     * @since 3.0
     */
    public PrintCommandListener(final PrintWriter writer, final boolean suppressLogin, final char eolMarker,
            final boolean showDirection) {
        this.writer = writer;
        this.nologin = suppressLogin;
        this.eolMarker = eolMarker;
        this.directionMarker = showDirection;
    }

    @Override
    public void protocolCommandSent(final ProtocolCommandEvent event)
    {
        if (directionMarker) {
            writer.print("> ");
        }
        if (nologin) {
            final String cmd = event.getCommand();
            if ("PASS".equalsIgnoreCase(cmd) || "USER".equalsIgnoreCase(cmd)) {
                writer.print(cmd);
                writer.println(" *******"); // Don't bother with EOL marker for this!
            } else {
                final String IMAP_LOGIN = "LOGIN";
                if (IMAP_LOGIN.equalsIgnoreCase(cmd)) { // IMAP
                    String msg = event.getMessage();
                    msg=msg.substring(0, msg.indexOf(IMAP_LOGIN)+IMAP_LOGIN.length());
                    writer.print(msg);
                    writer.println(" *******"); // Don't bother with EOL marker for this!
                } else {
                    writer.print(getPrintableString(event.getMessage()));
                }
            }
        } else {
            writer.print(getPrintableString(event.getMessage()));
        }
        writer.flush();
    }

    private String getPrintableString(final String msg){
        if (eolMarker == 0) {
            return msg;
        }
        final int pos = msg.indexOf(SocketClient.NETASCII_EOL);
        if (pos > 0) {
            final StringBuilder sb = new StringBuilder();
            sb.append(msg.substring(0,pos));
            sb.append(eolMarker);
            sb.append(msg.substring(pos));
            return sb.toString();
        }
        return msg;
    }

    @Override
    public void protocolReplyReceived(final ProtocolCommandEvent event)
    {
        if (directionMarker) {
            writer.print("< ");
        }
        writer.print(event.getMessage());
        writer.flush();
    }
}

org/apache/commons/net/PrintCommandListener.java

 

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