ExtendedNNTPOps.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,
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 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package examples.nntp;

import java.io.IOException;
import java.io.PrintWriter;

import org.apache.commons.net.PrintCommandListener;
import org.apache.commons.net.nntp.Article;
import org.apache.commons.net.nntp.NNTPClient;
import org.apache.commons.net.nntp.NewsgroupInfo;


/**
 * Simple class showing some of the extended commands (AUTH, XOVER, LIST ACTIVE)
 * 
 * @author Rory Winston <rwinston@checkfree.com>
 */
public class ExtendedNNTPOps {

    
    NNTPClient client;

    public ExtendedNNTPOps() {
        client = new NNTPClient();
        client.addProtocolCommandListener(new PrintCommandListener(new PrintWriter(System.out)));
    }


    public void demo(String host, String user, String password) {
        try {
            client.connect(host);

            // AUTHINFO USER/AUTHINFO PASS
            boolean success = client.authenticate(user, password);
            if (success) {
                System.out.println("Authentication succeeded");
            } else {
                System.out.println("Authentication failed, error =" + client.getReplyString());
            }

            // XOVER
            NewsgroupInfo testGroup = new NewsgroupInfo();
            client.selectNewsgroup("alt.test", testGroup);
            int lowArticleNumber = testGroup.getFirstArticle();
            int highArticleNumber = lowArticleNumber + 100;
            Article[] articles = NNTPUtils.getArticleInfo(client, lowArticleNumber, highArticleNumber);

            for (int i = 0; i < articles.length; ++i) {
                System.out.println(articles[i].getSubject());
            }

            // LIST ACTIVE
            NewsgroupInfo[] fanGroups = client.listNewsgroups("alt.fan.*");
            for (int i = 0; i < fanGroups.length; ++i) {
                System.out.println(fanGroups[i].getNewsgroup());
            }

        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    public static void main(String[] args) {
        ExtendedNNTPOps ops;

        if (args.length != 3) {
            System.err.println("usage: ExtendedNNTPOps nntpserver username password");
            System.exit(1);
        }

        ops = new ExtendedNNTPOps();
        ops.demo(args[0], args[1], args[2]);
    }

}

/* Emacs configuration
 * Local variables:        **
 * mode:             java  **
 * c-basic-offset:   4     **
 * indent-tabs-mode: nil   **
 * End:                    **
 */