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 examples.nntp;
019
020import java.io.BufferedReader;
021import java.io.FileNotFoundException;
022import java.io.FileReader;
023import java.io.IOException;
024import java.io.InputStreamReader;
025import java.io.PrintWriter;
026import java.io.Writer;
027
028import org.apache.commons.net.PrintCommandListener;
029import org.apache.commons.net.io.Util;
030import org.apache.commons.net.nntp.NNTPClient;
031import org.apache.commons.net.nntp.NNTPReply;
032import org.apache.commons.net.nntp.SimpleNNTPHeader;
033
034
035/***
036 * This is an example program using the NNTP package to post an article
037 * to the specified newsgroup(s).  It prompts you for header information and
038 * a filename to post.
039 ***/
040
041public final class PostMessage
042{
043
044    public static void main(String[] args)
045    {
046        String from, subject, newsgroup, filename, server, organization;
047        String references;
048        BufferedReader stdin;
049        FileReader fileReader = null;
050        SimpleNNTPHeader header;
051        NNTPClient client;
052
053        if (args.length < 1)
054        {
055            System.err.println("Usage: post newsserver");
056            System.exit(1);
057        }
058
059        server = args[0];
060
061        stdin = new BufferedReader(new InputStreamReader(System.in));
062
063        try
064        {
065            System.out.print("From: ");
066            System.out.flush();
067
068            from = stdin.readLine();
069
070            System.out.print("Subject: ");
071            System.out.flush();
072
073            subject = stdin.readLine();
074
075            header = new SimpleNNTPHeader(from, subject);
076
077            System.out.print("Newsgroup: ");
078            System.out.flush();
079
080            newsgroup = stdin.readLine();
081            header.addNewsgroup(newsgroup);
082
083            while (true)
084            {
085                System.out.print("Additional Newsgroup <Hit enter to end>: ");
086                System.out.flush();
087
088                newsgroup = stdin.readLine();
089                if (newsgroup == null) {
090                    break;
091                }
092
093                newsgroup = newsgroup.trim();
094
095                if (newsgroup.length() == 0) {
096                    break;
097                }
098
099                header.addNewsgroup(newsgroup);
100            }
101
102            System.out.print("Organization: ");
103            System.out.flush();
104
105            organization = stdin.readLine();
106
107            System.out.print("References: ");
108            System.out.flush();
109
110            references = stdin.readLine();
111
112            if (organization != null && organization.length() > 0) {
113                header.addHeaderField("Organization", organization);
114            }
115
116            if (references != null && references.length() > 0) {
117                header.addHeaderField("References", references);
118            }
119
120            header.addHeaderField("X-Newsreader", "NetComponents");
121
122            System.out.print("Filename: ");
123            System.out.flush();
124
125            filename = stdin.readLine();
126
127            try
128            {
129                fileReader = new FileReader(filename);
130            }
131            catch (FileNotFoundException e)
132            {
133                System.err.println("File not found. " + e.getMessage());
134                System.exit(1);
135            }
136
137            client = new NNTPClient();
138            client.addProtocolCommandListener(new PrintCommandListener(
139                                                  new PrintWriter(System.out), true));
140
141            client.connect(server);
142
143            if (!NNTPReply.isPositiveCompletion(client.getReplyCode()))
144            {
145                client.disconnect();
146                System.err.println("NNTP server refused connection.");
147                System.exit(1);
148            }
149
150            if (client.isAllowedToPost())
151            {
152                Writer writer = client.postArticle();
153
154                if (writer != null)
155                {
156                    writer.write(header.toString());
157                    Util.copyReader(fileReader, writer);
158                    writer.close();
159                    client.completePendingCommand();
160                }
161            }
162
163            if (fileReader != null) {
164                fileReader.close();
165            }
166
167            client.logout();
168
169            client.disconnect();
170        }
171        catch (IOException e)
172        {
173            e.printStackTrace();
174            System.exit(1);
175        }
176    }
177}
178
179