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