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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one or more
3    * contributor license agreements.  See the NOTICE file distributed with
4    * this work for additional information regarding copyright ownership.
5    * The ASF licenses this file to You under the Apache License, Version 2.0
6    * (the "License"); you may not use this file except in compliance with
7    * the License.  You may obtain a copy of the License at
8    *
9    *      http://www.apache.org/licenses/LICENSE-2.0
10   *
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS,
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   * See the License for the specific language governing permissions and
15   * limitations under the License.
16   */
17  
18  package org.apache.commons.net.examples.mail;
19  
20  import java.io.BufferedReader;
21  import java.io.FileNotFoundException;
22  import java.io.FileReader;
23  import java.io.IOException;
24  import java.io.InputStreamReader;
25  import java.io.PrintWriter;
26  import java.io.Writer;
27  import java.util.ArrayList;
28  import java.util.List;
29  
30  import org.apache.commons.net.PrintCommandListener;
31  import org.apache.commons.net.io.Util;
32  import org.apache.commons.net.smtp.SMTPClient;
33  import org.apache.commons.net.smtp.SMTPReply;
34  import org.apache.commons.net.smtp.SimpleSMTPHeader;
35  
36  /**
37   * This is an example program using the SMTP package to send a message to the specified recipients. It prompts you for header information and a file name
38   * containing the message.
39   */
40  
41  public final class SMTPMail {
42  
43      public static void main(final String[] args) {
44          final String sender;
45          final String recipient;
46          final String subject;
47          final String fileName;
48          final String server;
49          String cc;
50          final List<String> ccList = new ArrayList<>();
51          final BufferedReader stdin;
52          FileReader fileReader = null;
53          final Writer writer;
54          final SimpleSMTPHeader header;
55          final SMTPClient client;
56  
57          if (args.length < 1) {
58              System.err.println("Usage: SMTPMail <smtpserver>");
59              System.exit(1);
60          }
61  
62          server = args[0];
63  
64          stdin = new BufferedReader(new InputStreamReader(System.in));
65  
66          try {
67              System.out.print("From: ");
68              System.out.flush();
69  
70              sender = stdin.readLine();
71  
72              System.out.print("To: ");
73              System.out.flush();
74  
75              recipient = stdin.readLine();
76  
77              System.out.print("Subject: ");
78              System.out.flush();
79  
80              subject = stdin.readLine();
81  
82              header = new SimpleSMTPHeader(sender, recipient, subject);
83  
84              while (true) {
85                  System.out.print("CC <enter one address per line, hit enter to end>: ");
86                  System.out.flush();
87  
88                  cc = stdin.readLine();
89  
90                  if (cc == null || cc.isEmpty()) {
91                      break;
92                  }
93  
94                  header.addCC(cc.trim());
95                  ccList.add(cc.trim());
96              }
97  
98              System.out.print("Filename: ");
99              System.out.flush();
100 
101             fileName = stdin.readLine();
102 
103             try {
104                 fileReader = new FileReader(fileName);
105             } catch (final FileNotFoundException e) {
106                 System.err.println("File not found. " + e.getMessage());
107             }
108 
109             client = new SMTPClient();
110             client.addProtocolCommandListener(new PrintCommandListener(new PrintWriter(System.out), true));
111 
112             client.connect(server);
113 
114             if (!SMTPReply.isPositiveCompletion(client.getReplyCode())) {
115                 client.disconnect();
116                 System.err.println("SMTP server refused connection.");
117                 System.exit(1);
118             }
119 
120             client.login();
121 
122             client.setSender(sender);
123             client.addRecipient(recipient);
124 
125             for (final String recpt : ccList) {
126                 client.addRecipient(recpt);
127             }
128 
129             writer = client.sendMessageData();
130 
131             if (writer != null) {
132                 writer.write(header.toString());
133                 Util.copyReader(fileReader, writer);
134                 writer.close();
135                 client.completePendingCommand();
136             }
137 
138             if (fileReader != null) {
139                 fileReader.close();
140             }
141 
142             client.logout();
143 
144             client.disconnect();
145         } catch (final IOException e) {
146             e.printStackTrace();
147             System.exit(1);
148         }
149     }
150 }