2 * Copyright 2008 Google Inc.
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
17 package com.google.zxing.web;
19 import com.google.zxing.MultiFormatReader;
20 import com.google.zxing.Reader;
21 import com.google.zxing.ReaderException;
22 import com.google.zxing.Result;
23 import com.google.zxing.client.j2se.BufferedImageMonochromeBitmapSource;
25 import javax.imageio.ImageIO;
26 import javax.mail.Address;
27 import javax.mail.Authenticator;
28 import javax.mail.Flags;
29 import javax.mail.Folder;
30 import javax.mail.Message;
31 import javax.mail.MessagingException;
32 import javax.mail.Session;
33 import javax.mail.Store;
34 import javax.mail.Transport;
35 import javax.mail.internet.InternetAddress;
36 import javax.mail.internet.MimeBodyPart;
37 import javax.mail.internet.MimeMessage;
38 import javax.mail.internet.MimeMultipart;
39 import java.awt.image.BufferedImage;
40 import java.io.UnsupportedEncodingException;
41 import java.util.Properties;
42 import java.util.TimerTask;
43 import java.util.logging.Level;
44 import java.util.logging.Logger;
49 final class DecodeEmailTask extends TimerTask {
51 private static final Logger log = Logger.getLogger(DecodeEmailTask.class.getName());
53 private static final String SMTP_HOST = "smtp.gmail.com";
54 private static final String POP_HOST = "pop.gmail.com";
55 private static final String SMTP_PORT = "465";
56 private static final String POP_PORT = "995";
57 private static final String SSL_FACTORY = "javax.net.ssl.SSLSocketFactory";
58 private static final Properties sessionProperties = new Properties();
60 sessionProperties.setProperty("mail.transport.protocol", "smtp");
61 sessionProperties.setProperty("mail.smtp.host", SMTP_HOST);
62 sessionProperties.setProperty("mail.smtp.auth", "true");
63 sessionProperties.setProperty("mail.smtp.port", SMTP_PORT);
64 sessionProperties.setProperty("mail.smtp.socketFactory.port", SMTP_PORT);
65 sessionProperties.setProperty("mail.smtp.socketFactory.class", SSL_FACTORY);
66 sessionProperties.setProperty("mail.smtp.socketFactory.fallback", "false");
67 sessionProperties.setProperty("mail.smtp.quitwait", "false");
68 sessionProperties.setProperty("mail.pop3.host", POP_HOST);
69 sessionProperties.setProperty("mail.pop3.auth", "true");
70 sessionProperties.setProperty("mail.pop3.port", POP_PORT);
71 sessionProperties.setProperty("mail.pop3.socketFactory.port", POP_PORT);
72 sessionProperties.setProperty("mail.pop3.socketFactory.class", SSL_FACTORY);
73 sessionProperties.setProperty("mail.pop3.socketFactory.fallback", "false");
76 private final Authenticator emailAuthenticator;
77 private final Address fromAddress;
79 DecodeEmailTask(String emailAddress, Authenticator emailAuthenticator) {
80 this.emailAuthenticator = emailAuthenticator;
82 fromAddress = new InternetAddress(emailAddress, "ZXing By Email");
83 } catch (UnsupportedEncodingException uee) {
85 throw new RuntimeException(uee);
91 log.info("Checking email...");
93 Session session = Session.getInstance(sessionProperties, emailAuthenticator);
97 store = session.getStore("pop3");
99 inbox = store.getFolder("INBOX");
100 inbox.open(Folder.READ_WRITE);
101 int count = inbox.getMessageCount();
103 log.info("Found " + count + " messages");
105 for (int i = 1; i <= count; i++) {
106 log.info("Processing message " + i);
107 Message message = inbox.getMessage(i);
108 Object content = message.getContent();
109 if (content instanceof MimeMultipart) {
110 MimeMultipart mimeContent = (MimeMultipart) content;
111 int numParts = mimeContent.getCount();
112 for (int j = 0; j < numParts; j++) {
113 MimeBodyPart part = (MimeBodyPart) mimeContent.getBodyPart(j);
114 String contentType = part.getContentType();
115 if (!contentType.startsWith("image/")) {
118 BufferedImage image = ImageIO.read(part.getInputStream());
120 Reader reader = new MultiFormatReader();
121 Result result = null;
123 result = reader.decode(new BufferedImageMonochromeBitmapSource(image), DecodeServlet.HINTS);
124 } catch (ReaderException re) {
125 log.info("Decoding FAILED");
128 Message reply = new MimeMessage(session);
129 Address sender = message.getFrom()[0];
130 reply.setRecipient(Message.RecipientType.TO, sender);
131 reply.setFrom(fromAddress);
132 if (result == null) {
133 reply.setSubject("Decode failed");
134 reply.setContent("Sorry, we could not decode that image.", "text/plain");
136 String text = result.getText();
137 reply.setSubject("Decode succeeded");
138 reply.setContent(text, "text/plain");
140 log.info("Sending reply");
141 Transport.send(reply);
145 message.setFlag(Flags.Flag.DELETED, true);
155 } catch (MessagingException me) {
159 } catch (Throwable t) {
160 log.log(Level.WARNING, "Unexpected error", t);
164 public static void main(String[] args) {
165 Authenticator emailAuthenticator = new EmailAuthenticator(args[0], args[1]);
166 new DecodeEmailTask(emailAuthenticator).run();