/*
* 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 examples.nntp;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.PrintWriter;
import java.net.SocketException;
import org.apache.commons.net.PrintCommandListener;
import org.apache.commons.net.nntp.NNTPClient;
import org.apache.commons.net.nntp.NewsgroupInfo;
/**
* Sample program demonstrating the use of article header and body retrieval
*/
public class ArticleReader {
public static void main(String[] args) throws SocketException, IOException {
if (args.length != 2 && args.length != 3 && args.length != 5) {
System.out.println("Usage: MessageThreading <hostname> <groupname> [<article specifier> [<user> <password>]]");
return;
}
String hostname = args[0];
String newsgroup = args[1];
// Article specifier can be numeric or Id in form <m.n.o.x@host>
String articleSpec = args.length >= 3 ? args[2] : null;
NNTPClient client = new NNTPClient();
client.addProtocolCommandListener(new PrintCommandListener(new PrintWriter(System.out), true));
client.connect(hostname);
if (args.length == 5) { // Optional auth
String user = args[3];
String password = args[4];
if(!client.authenticate(user, password)) {
System.out.println("Authentication failed for user " + user + "!");
System.exit(1);
}
}
NewsgroupInfo group = new NewsgroupInfo();
client.selectNewsgroup(newsgroup, group);
BufferedReader br;
String line;
if (articleSpec != null) {
br = (BufferedReader) client.retrieveArticleHeader(articleSpec);
} else {
long articleNum = group.getLastArticleLong();
br = client.retrieveArticleHeader(articleNum);
}
if (br != null) {
while((line=br.readLine()) != null) {
System.out.println(line);
}
br.close();
}
if (articleSpec != null) {
br = (BufferedReader) client.retrieveArticleBody(articleSpec);
} else {
long articleNum = group.getLastArticleLong();
br = client.retrieveArticleBody(articleNum);
}
if (br != null) {
while((line=br.readLine()) != null) {
System.out.println(line);
}
br.close();
}
}
}