/*
* @(#)JavaMailServlet.java 1.5 01/05/23
*
* Copyright 1998, 1999 Sun Microsystems, Inc. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistribution in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* Neither the name of Sun Microsystems, Inc. or the names of contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* This software is provided "AS IS," without a warranty of any kind. ALL
* EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
* INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
* PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN AND
* ITS LICENSORS SHALL NOT BE LIABLE FOR ANY DAMAGES OR LIABILITIES
* SUFFERED BY LICENSEE AS A RESULT OF OR RELATING TO USE, MODIFICATION
* OR DISTRIBUTION OF THE SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL
* SUN OR ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR
* FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE
* DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
* ARISING OUT OF THE USE OF OR INABILITY TO USE SOFTWARE, EVEN IF SUN HAS
* BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
*
* You acknowledge that Software is not designed, licensed or intended
* for use in the design, construction, operation or maintenance of any
* nuclear facility.
*/
import java.io.*;
import java.util.*;
import java.text.*;
import javax.servlet.*;
import javax.servlet.http.*;
import javax.mail.*;
import javax.mail.internet.*;
import javax.activation.*;
/**
* This is a servlet that demonstrates the use of JavaMail APIs
* in a 3-tier application. It allows the user to login to an
* IMAP store, list all the messages in the INBOX folder, view
* selected messages, compose and send a message, and logout.
* <p>
* Please note: This is NOT an example of how to write servlets!
* This is simply to show that JavaMail can be used in a servlet.
* <p>
* For more information on this servlet, see the
* JavaMailServlet.README.txt file.
* <p>
* For more information on servlets, see
* <a href="http://java.sun.com/products/java-server/servlets/index.html">
* http://java.sun.com/products/java-server/servlets/index.html</a>
*
* @author Max Spivak
*/
public class JavaMailServlet extends HttpServlet implements SingleThreadModel {
String protocol = "imap";
String mbox = "INBOX";
/**
* This method handles the "POST" submission from two forms: the
* login form and the message compose form. The login form has the
* following parameters: <code>hostname</code>, <code>username</code>,
* and <code>password</code>. The <code>send</code> parameter denotes
* that the method is processing the compose form submission.
*/
public void doPost(HttpServletRequest req, HttpServletResponse res)
throws ServletException, IOException {
// get the session
HttpSession ssn = req.getSession(true);
String send = req.getParameter("send");
String host = req.getParameter("hostname");
String user = req.getParameter("username");
String passwd = req.getParameter("password");
URLName url = new URLName(protocol, host, -1, mbox, user, passwd);
ServletOutputStream out = res.getOutputStream();
res.setContentType("text/html");
out.println("<html><body bgcolor=\"#CCCCFF\">");
if (send != null) {
// process message sending
send(req, res, out, ssn);
} else {
// initial login
// create
MailUserData mud = new MailUserData(url);
ssn.putValue("javamailservlet", mud);
try {
Properties props = System.getProperties();
props.put("mail.smtp.host", host);
Session session = Session.getDefaultInstance(props, null);
session.setDebug(false);
Store store = session.getStore(url);
store.connect();
Folder folder = store.getDefaultFolder();
if (folder == null)
throw new MessagingException("No default folder");
folder = folder.getFolder(mbox);
if (folder == null)
throw new MessagingException("Invalid folder");
folder.open(Folder.READ_WRITE);
int totalMessages = folder.getMessageCount();
Message[] msgs = folder.getMessages();
FetchProfile fp = new FetchProfile();
fp.add(FetchProfile.Item.ENVELOPE);
folder.fetch(msgs, fp);
// track who logged in
System.out.println("Login from: " + store.getURLName());
// save stuff into MUD
mud.setSession(session);
mud.setStore(store);
mud.setFolder(folder);
// splash
out.print("<center>");
out.print("<font face=\"Arial,Helvetica\" font size=+3>");
out.println("<b>Welcome to JavaMail!</b></font></center><p>");
// folder table
out.println("<table width=\"50%\" border=0 align=center>");
// folder name column header
out.print("<tr><td width=\"75%\" bgcolor=\"#ffffcc\">");
out.print("<font face=\"Arial,Helvetica\" font size=-1>");
out.println("<b>FolderName</b></font></td><br>");
// msg count column header
out.print("<td width=\"25%\" bgcolor=\"#ffffcc\">");
out.print("<font face=\"Arial,Helvetica\" font size=-1>");
out.println("<b>Messages</b></font></td><br>");
out.println("</tr>");
// folder name
out.print("<tr><td width=\"75%\" bgcolor=\"#ffffff\">");
out.print("<a href=\"" + HttpUtils.getRequestURL(req) + "\">" +
"Inbox" + "</a></td><br>");
// msg count
out.println("<td width=\"25%\" bgcolor=\"#ffffff\">" +
totalMessages + "</td>");
out.println("</tr>");
out.println("</table");
} catch (Exception ex) {
out.println(ex.toString());
} finally {
out.println("</body></html>");
out.close();
}
}
}
/**
* This method handles the GET requests for the client.
*/
public void doGet (HttpServletRequest req, HttpServletResponse res)
throws ServletException, IOException {
HttpSession ses = req.getSession(false); // before we write to out
ServletOutputStream out = res.getOutputStream();
MailUserData mud = getMUD(ses);
if (mud == null) {
res.setContentType("text/html");
out.println("<html><body>Please Login (no session)</body></html>");
out.close();
return;
}
if (!mud.getStore().isConnected()) {
res.setContentType("text/html");
out.println("<html><body>Not Connected To Store</body></html>");
out.close();
return;
}
// mux that takes a GET request, based on parameters figures
// out what it should do, and routes it to the
// appropriate method
// get url parameters
String msgStr = req.getParameter("message");
String logout = req.getParameter("logout");
String compose = req.getParameter("compose");
String part = req.getParameter("part");
int msgNum = -1;
int partNum = -1;
// process url params
if (msgStr != null) {
// operate on message "msgStr"
msgNum = Integer.parseInt(msgStr);
if (part == null) {
// display message "msgStr"
res.setContentType("text/html");
displayMessage(mud, req, out, msgNum);
} else if (part != null) {
// display part "part" in message "msgStr"
partNum = Integer.parseInt(part);
displayPart(mud, msgNum, partNum, out, res);
}
} else if (compose != null) {
// display compose form
compose(mud, res, out);
} else if (logout != null) {
// process logout
try {
mud.getFolder().close(false);
mud.getStore().close();
ses.invalidate();
out.println("<html><body>Logged out OK</body></html>");
} catch (MessagingException mex) {
out.println(mex.toString());
}
} else {
// display headers
displayHeaders(mud, req, out);
}
}
/* main method to display messages */
private void displayMessage(MailUserData mud, HttpServletRequest req,
ServletOutputStream out, int msgNum)
throws IOException {
out.println("<html>");
out.println("<HEAD><TITLE>JavaMail Servlet</TITLE></HEAD>");
out.println("<BODY bgcolor=\"#ccccff\">");
out.print("<center><font face=\"Arial,Helvetica\" ");
out.println("font size=\"+3\"><b>");
out.println("Message " + (msgNum+1) + " in folder " +
mud.getStore().getURLName() +
"/INBOX</b></font></center><p>");
try {
Message msg = mud.getFolder().getMessage(msgNum);
// first, display this message's headers
displayMessageHeaders(mud, msg, out);
// and now, handle the content
Object o = msg.getContent();
//if (o instanceof String) {
if (msg.isMimeType("text/plain")) {
out.println("<pre>");
out.println((String)o);
out.println("</pre>");
//} else if (o instanceof Multipart){
} else if (msg.isMimeType("multipart/*")) {
Multipart mp = (Multipart)o;
int cnt = mp.getCount();
for (int i = 0; i < cnt; i++) {
displayPart(mud, msgNum, mp.getBodyPart(i), i, req, out);
}
} else {
out.println(msg.getContentType());
}
} catch (MessagingException mex) {
out.println(mex.toString());
}
out.println("</BODY></html>");
out.close();
}
/**
* This method displays a message part. <code>text/plain</code>
* content parts are displayed inline. For all other parts,
* a URL is generated and displayed; clicking on the URL
* brings up the part in a separate page.
*/
private void displayPart(MailUserData mud, int msgNum, Part part,
int partNum, HttpServletRequest req,
ServletOutputStream out)
throws IOException {
if (partNum != 0)
out.println("<p><hr>");
try {
String sct = part.getContentType();
if (sct == null) {
out.println("invalid part");
return;
}
ContentType ct = new ContentType(sct);
if (partNum != 0)
out.println("<b>Attachment Type:</b> " +
ct.getBaseType() + "<br>");
if (ct.match("text/plain")) {
// display text/plain inline
out.println("<pre>");
out.println((String)part.getContent());
out.println("</pre>");
} else {
// generate a url for this part
String s;
if ((s = part.getFileName()) != null)
out.println("<b>Filename:</b> " + s + "<br>");
s = null;
if ((s = part.getDescription()) != null)
out.println("<b>Description:</b> " + s + "<br>");
out.println("<a href=\"" +
HttpUtils.getRequestURL(req) +
"?message=" +
msgNum + "&part=" +
partNum + "\">Display Attachment</a>");
}
} catch (MessagingException mex) {
out.println(mex.toString());
}
}
/**
* This method gets the stream from for a given msg part and
* pushes it out to the browser with the correct content type.
* Used to display attachments and relies on the browser's
* content handling capabilities.
*/
private void displayPart(MailUserData mud, int msgNum,
int partNum, ServletOutputStream out,
HttpServletResponse res)
throws IOException {
Part part = null;
try {
Message msg = mud.getFolder().getMessage(msgNum);
Multipart mp = (Multipart)msg.getContent();
part = mp.getBodyPart(partNum);
String sct = part.getContentType();
if (sct == null) {
out.println("invalid part");
return;
}
ContentType ct = new ContentType(sct);
res.setContentType(ct.getBaseType());
InputStream is = part.getInputStream();
int i;
while ((i = is.read()) != -1)
out.write(i);
out.flush();
out.close();
} catch (MessagingException mex) {
out.println(mex.toString());
}
}
/**
* This is a utility message that pretty-prints the message
* headers for message that is being displayed.
*/
private void displayMessageHeaders(MailUserData mud, Message msg,
ServletOutputStream out)
throws IOException {
try {
out.println("<b>Date:</b> " + msg.getSentDate() + "<br>");
Address[] fr = msg.getFrom();
if (fr != null) {
boolean tf = true;
out.print("<b>From:</b> ");
for (int i = 0; i < fr.length; i++) {
out.print(((tf) ? " " : ", ") + getDisplayAddress(fr[i]));
tf = false;
}
out.println("<br>");
}
Address[] to = msg.getRecipients(Message.RecipientType.TO);
if (to != null) {
boolean tf = true;
out.print("<b>To:</b> ");
for (int i = 0; i < to.length; i++) {
out.print(((tf) ? " " : ", ") + getDisplayAddress(to[i]));
tf = false;
}
out.println("<br>");
}
Address[] cc = msg.getRecipients(Message.RecipientType.CC);
if (cc != null) {
boolean cf = true;
out.print("<b>CC:</b> ");
for (int i = 0; i < cc.length; i++) {
out.print(((cf) ? " " : ", ") + getDisplayAddress(cc[i]));
cf = false;
}
out.println("<br>");
}
out.print("<b>Subject:</b> " +
((msg.getSubject() !=null) ? msg.getSubject() : "") +
"<br>");
} catch (MessagingException mex) {
out.println(msg.toString());
}
}
/**
* This method displays the URL's for the available commands and the
* INBOX headerlist
*/
private void displayHeaders(MailUserData mud,
HttpServletRequest req,
ServletOutputStream out)
throws IOException {
SimpleDateFormat df = new SimpleDateFormat("EE M/d/yy");
out.println("<html>");
out.println("<HEAD><TITLE>JavaMail Servlet</TITLE></HEAD>");
out.println("<BODY bgcolor=\"#ccccff\"><hr>");
out.print("<center><font face=\"Arial,Helvetica\" font size=\"+3\">");
out.println("<b>Folder " + mud.getStore().getURLName() +
"/INBOX</b></font></center><p>");
// URL's for the commands that are available
out.println("<font face=\"Arial,Helvetica\" font size=\"+3\"><b>");
out.println("<a href=\"" +
HttpUtils.getRequestURL(req) +
"?logout=true\">Logout</a>");
out.println("<a href=\"" +
HttpUtils.getRequestURL(req) +
"?compose=true\" target=\"compose\">Compose</a>");
out.println("</b></font>");
out.println("<hr>");
// List headers in a table
out.print("<table cellpadding=1 cellspacing=1 "); // table
out.println("width=\"100%\" border=1>"); // settings
// sender column header
out.println("<tr><td width=\"25%\" bgcolor=\"ffffcc\">");
out.println("<font face=\"Arial,Helvetica\" font size=\"+1\">");
out.println("<b>Sender</b></font></td>");
// date column header
out.println("<td width=\"15%\" bgcolor=\"ffffcc\">");
out.println("<font face=\"Arial,Helvetica\" font size=\"+1\">");
out.println("<b>Date</b></font></td>");
// subject column header
out.println("<td bgcolor=\"ffffcc\">");
out.println("<font face=\"Arial,Helvetica\" font size=\"+1\">");
out.println("<b>Subject</b></font></td></tr>");
try {
Folder f = mud.getFolder();
int msgCount = f.getMessageCount();
Message m = null;
// for each message, show its headers
for (int i = 1; i <= msgCount; i++) {
m = f.getMessage(i);
// if message has the DELETED flag set, don't display it
if (m.isSet(Flags.Flag.DELETED))
continue;
// from
out.println("<tr valigh=middle>");
out.print("<td width=\"25%\" bgcolor=\"ffffff\">");
out.println("<font face=\"Arial,Helvetica\">" +
((m.getFrom() != null) ?
m.getFrom()[0].toString() :
"" ) +
"</font></td>");
// date
out.print("<td nowrap width=\"15%\" bgcolor=\"ffffff\">");
out.println("<font face=\"Arial,Helvetica\">" +
df.format((m.getSentDate()!=null) ?
m.getSentDate() : m.getReceivedDate()) +
"</font></td>");
// subject & link
out.print("<td bgcolor=\"ffffff\">");
out.println("<font face=\"Arial,Helvetica\">" +
"<a href=\"" +
HttpUtils.getRequestURL(req) +
"?message=" +
i + "\">" +
((m.getSubject() != null) ?
m.getSubject() :
"<i>No Subject</i>") +
"</a>" +
"</font></td>");
out.println("</tr>");
}
} catch (MessagingException mex) {
out.println("<tr><td>" + mex.toString() + "</td></tr>");
mex.printStackTrace();
}
out.println("</table>");
out.println("</BODY></html>");
out.flush();
out.close();
}
/**
* This method handles the request when the user hits the
* <i>Compose</i> link. It send the compose form to the browser.
*/
private void compose(MailUserData mud, HttpServletResponse res,
ServletOutputStream out)
throws IOException {
res.setContentType("text/html");
out.println(composeForm);
out.close();
}
/**
* This method processes the send request from the compose form
*/
private void send(HttpServletRequest req, HttpServletResponse res,
ServletOutputStream out, HttpSession ssn)
throws IOException {
String to = req.getParameter("to");
String cc = req.getParameter("cc");
String subj = req.getParameter("subject");
String text = req.getParameter("text");
try {
MailUserData mud = getMUD(ssn);
if (mud == null)
throw new Exception("trying to send, but not logged in");
Message msg = new MimeMessage(mud.getSession());
InternetAddress[] toAddrs = null, ccAddrs = null;
if (to != null) {
toAddrs = InternetAddress.parse(to, false);
msg.setRecipients(Message.RecipientType.TO, toAddrs);
} else
throw new MessagingException("No \"To\" address specified");
if (cc != null) {
ccAddrs = InternetAddress.parse(cc, false);
msg.setRecipients(Message.RecipientType.CC, ccAddrs);
}
if (subj != null)
msg.setSubject(subj);
URLName u = mud.getURLName();
msg.setFrom(new InternetAddress(u.getUsername() + "@" +
u.getHost()));
if (text != null)
msg.setText(text);
Transport.send(msg);
out.println("<h1>Message sent successfully</h1></body></html>");
out.close();
} catch (Exception mex) {
out.println("<h1>Error sending message.</h1>");
out.println(mex.toString());
out.println("<br></body></html>");
}
}
// utility method; returns a string suitable for msg header display
private String getDisplayAddress(Address a) {
String pers = null;
String addr = null;
if (a instanceof InternetAddress &&
((pers = ((InternetAddress)a).getPersonal()) != null)) {
addr = pers + " "+"<"+((InternetAddress)a).getAddress()+">";
} else
addr = a.toString();
return addr;
}
// utility method; retrieve the MailUserData
// from the HttpSession and return it
private MailUserData getMUD(HttpSession ses) throws IOException {
MailUserData mud = null;
if (ses == null) {
return null;
} else {
if ((mud = (MailUserData)ses.getValue("javamailservlet")) == null){
return null;
}
}
return mud;
}
public String getServletInfo() {
return "A mail reader servlet";
}
/**
* This is the HTML code for the compose form. Another option would
* have been to use a separate html page.
*/
private static String composeForm = "<HTML><HEAD><TITLE>JavaMail Compose</TITLE></HEAD><BODY BGCOLOR=\"#CCCCFF\"><FORM ACTION=\"/servlet/JavaMailServlet\" METHOD=\"POST\"><input type=\"hidden\" name=\"send\" value=\"send\"><P ALIGN=\"CENTER\"><B><FONT SIZE=\"4\" FACE=\"Verdana, Arial, Helvetica\">JavaMail Compose Message</FONT></B><P><TABLE BORDER=\"0\" WIDTH=\"100%\"><TR><TD WIDTH=\"16%\" HEIGHT=\"22\"> <P ALIGN=\"RIGHT\"><B><FONT FACE=\"Verdana, Arial, Helvetica\">To:</FONT></B></TD><TD WIDTH=\"84%\" HEIGHT=\"22\"><INPUT TYPE=\"TEXT\" NAME=\"to\" SIZE=\"30\"> <FONT SIZE=\"1\" FACE=\"Verdana, Arial, Helvetica\"> (separate addresses with commas)</FONT></TD></TR><TR><TD WIDTH=\"16%\"><P ALIGN=\"RIGHT\"><B><FONT FACE=\"Verdana, Arial, Helvetica\">CC:</FONT></B></TD><TD WIDTH=\"84%\"><INPUT TYPE=\"TEXT\" NAME=\"cc\" SIZE=\"30\"> <FONT SIZE=\"1\" FACE=\"Verdana, Arial, Helvetica\"> (separate addresses with commas)</FONT></TD></TR><TR><TD WIDTH=\"16%\"><P ALIGN=\"RIGHT\"><B><FONT FACE=\"Verdana, Arial, Helvetica\">Subject:</FONT></B></TD><TD WIDTH=\"84%\"><INPUT TYPE=\"TEXT\" NAME=\"subject\" SIZE=\"55\"></TD></TR><TR><TD WIDTH=\"16%\"> </TD><TD WIDTH=\"84%\"><TEXTAREA NAME=\"text\" ROWS=\"15\" COLS=\"53\"></TEXTAREA></TD></TR><TR><TD WIDTH=\"16%\" HEIGHT=\"32\"> </TD><TD WIDTH=\"84%\" HEIGHT=\"32\"><INPUT TYPE=\"SUBMIT\" NAME=\"Send\" VALUE=\"Send\"><INPUT TYPE=\"RESET\" NAME=\"Reset\" VALUE=\"Reset\"></TD></TR></TABLE></FORM></BODY></HTML>";
}
/**
* This class is used to store session data for each user's session. It
* is stored in the HttpSession.
*/
class MailUserData {
URLName url;
Session session;
Store store;
Folder folder;
public MailUserData(URLName urlname) {
url = urlname;
}
public URLName getURLName() {
return url;
}
public Session getSession() {
return session;
}
public void setSession(Session s) {
session = s;
}
public Store getStore() {
return store;
}
public void setStore(Store s) {
store = s;
}
public Folder getFolder() {
return folder;
}
public void setFolder(Folder f) {
folder = f;
}
}
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