View Javadoc

1   /*
2    * Copyright 2001-2005 The Apache Software Foundation
3    *
4    * Licensed under the Apache License, Version 2.0 (the "License");
5    * you may not use this file except in compliance with the License.
6    * You may obtain a copy of the License at
7    *
8    *     http://www.apache.org/licenses/LICENSE-2.0
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS,
12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   * See the License for the specific language governing permissions and
14   * limitations under the License.
15   */
16  package examples.nntp;
17  
18  import java.io.IOException;
19  import java.io.PrintWriter;
20  
21  import org.apache.commons.net.nntp.Article;
22  import org.apache.commons.net.nntp.NNTPClient;
23  import org.apache.commons.net.nntp.NewsgroupInfo;
24  
25  import examples.PrintCommandListener;
26  
27  /**
28   * Simple class showing some of the extended commands (AUTH, XOVER, LIST ACTIVE)
29   * 
30   * @author Rory Winston <rwinston@checkfree.com>
31   */
32  public class ExtendedNNTPOps {
33  
34  	
35  	NNTPClient client;
36  
37  	public ExtendedNNTPOps() {
38  		client = new NNTPClient();
39  		client.addProtocolCommandListener(new PrintCommandListener(new PrintWriter(System.out)));
40  	}
41  
42  
43  	public void demo(String host, String user, String password) {
44  		try {
45  			client.connect(host);
46  
47  			// AUTHINFO USER/AUTHINFO PASS
48  			boolean success = client.authenticate(user, password);
49  			if (success) {
50  				System.out.println("Authentication succeeded");
51  			} else {
52  				System.out.println("Authentication failed, error =" + client.getReplyString());
53  			}
54  
55  			// XOVER
56  			NewsgroupInfo testGroup = new NewsgroupInfo();
57  			client.selectNewsgroup("alt.test", testGroup);
58  			int lowArticleNumber = testGroup.getFirstArticle();
59  			int highArticleNumber = lowArticleNumber + 100;
60  			Article[] articles = NNTPUtils.getArticleInfo(client, lowArticleNumber, highArticleNumber);
61  
62  			for (int i = 0; i < articles.length; ++i) {
63  				System.out.println(articles[i].getSubject());
64  			}
65  
66  			// LIST ACTIVE
67  			NewsgroupInfo[] fanGroups = client.listNewsgroups("alt.fan.*");
68  			for (int i = 0; i < fanGroups.length; ++i) {
69  				System.out.println(fanGroups[i].getNewsgroup());
70  			}
71  
72  		} catch (IOException e) {
73  			e.printStackTrace();
74  		}
75  	}
76  
77  	public static void main(String[] args) {
78  		ExtendedNNTPOps ops;
79  
80  		if (args.length != 3) {
81  			System.err.println("usage: ExtendedNNTPOps nntpserver username password");
82  			System.exit(1);
83  		}
84  
85  		ops = new ExtendedNNTPOps();
86  		ops.demo(args[0], args[1], args[2]);
87  	}
88  
89  }
90  
91  /* Emacs configuration
92   * Local variables:        **
93   * mode:             java  **
94   * c-basic-offset:   4     **
95   * indent-tabs-mode: nil   **
96   * End:                    **
97   */