001/* 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017 018package org.apache.commons.net.examples.nntp; 019 020import java.io.IOException; 021import java.io.PrintWriter; 022 023import org.apache.commons.net.PrintCommandListener; 024import org.apache.commons.net.nntp.Article; 025import org.apache.commons.net.nntp.NNTPClient; 026import org.apache.commons.net.nntp.NewsgroupInfo; 027 028/** 029 * Simple class showing some of the extended commands (AUTH, XOVER, LIST ACTIVE) 030 */ 031public class ExtendedNNTPOps { 032 033 public static void main(final String[] args) { 034 final ExtendedNNTPOps ops; 035 036 final int argc = args.length; 037 if (argc < 1) { 038 System.err.println("usage: ExtendedNNTPOps nntpserver [username password]"); 039 System.exit(1); 040 } 041 042 ops = new ExtendedNNTPOps(); 043 ops.demo(args[0], argc >= 3 ? args[1] : null, argc >= 3 ? args[2] : null); 044 } 045 046 private final NNTPClient client; 047 048 public ExtendedNNTPOps() { 049 client = new NNTPClient(); 050 client.addProtocolCommandListener(new PrintCommandListener(new PrintWriter(System.out), true)); 051 } 052 053 private void demo(final String host, final String user, final String password) { 054 try { 055 client.connect(host); 056 057 // AUTHINFO USER/AUTHINFO PASS 058 if (user != null && password != null) { 059 final boolean success = client.authenticate(user, password); 060 if (success) { 061 System.out.println("Authentication succeeded"); 062 } else { 063 System.out.println("Authentication failed, error =" + client.getReplyString()); 064 } 065 } 066 067 // XOVER 068 final NewsgroupInfo testGroup = new NewsgroupInfo(); 069 client.selectNewsgroup("alt.test", testGroup); 070 final long lowArticleNumber = testGroup.getFirstArticleLong(); 071 final long highArticleNumber = lowArticleNumber + 100; 072 final Iterable<Article> articles = client.iterateArticleInfo(lowArticleNumber, highArticleNumber); 073 074 for (final Article article : articles) { 075 if (article.isDummy()) { // Subject will contain raw response 076 System.out.println("Could not parse: " + article.getSubject()); 077 } else { 078 System.out.println(article.getSubject()); 079 } 080 } 081 082 // LIST ACTIVE 083 final NewsgroupInfo[] fanGroups = client.listNewsgroups("alt.fan.*"); 084 for (final NewsgroupInfo fanGroup : fanGroups) { 085 System.out.println(fanGroup.getNewsgroup()); 086 } 087 088 } catch (final IOException e) { 089 e.printStackTrace(); 090 } 091 } 092 093}