com.untzuntz.ustack.main.Emailer Maven / Gradle / Ivy
package com.untzuntz.ustack.main;
import java.io.File;
import java.util.Date;
import java.util.Enumeration;
import java.util.Hashtable;
import java.util.Properties;
import javax.activation.DataHandler;
import javax.activation.FileDataSource;
import javax.mail.Authenticator;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Multipart;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.AddressException;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;
import javax.mail.internet.MimeUtility;
import javax.ws.rs.core.MediaType;
import org.apache.log4j.Logger;
import com.sun.jersey.api.client.Client;
import com.sun.jersey.api.client.ClientResponse;
import com.sun.jersey.api.client.WebResource;
import com.sun.jersey.api.client.filter.HTTPBasicAuthFilter;
import com.sun.jersey.core.util.MultivaluedMapImpl;
public class Emailer {
private static Logger logger = Logger.getLogger(Emailer.class);
/**
* Handles sending an email from the application
*
* @param from
* @param subject
* @param message
* @param recipients
* @throws MessagingException
*/
public static void postMail(String to, String from, String fromName, String subject, String message, String htmlMessage) throws AddressException
{
postMail(new InternetAddress[] { new InternetAddress(to) }, null, null, from, fromName, subject, message, htmlMessage, null, null);
}
public static void postMail(String to, String from, String fromName, String subject, String message, String htmlMessage, Hashtable attachments, String campaignId) throws AddressException
{
postMail(new InternetAddress[] { new InternetAddress(to) }, null, null, from, fromName, subject, message, htmlMessage, attachments, campaignId);
}
/**
* Handles sending an email from the application with additional options
* @param to
* @param cc
* @param bcc
* @param from
* @param subject
* @param message
* @throws MessagingException
*/
public static void postMail(InternetAddress[] to, InternetAddress[] cc, InternetAddress[] bcc, String from, String fromName, String subject, String message, String htmlMessage) throws AddressException
{
postMail(to, cc, bcc, from, fromName, subject, message, htmlMessage, null, null);
}
public static void postMail(InternetAddress[] to, InternetAddress[] cc, InternetAddress[] bcc, String from, String fromName, String subject, String message, String htmlMessage, Hashtable attachments, String campaignId) throws AddressException
{
if ("mailgun".equalsIgnoreCase(UOpts.getString(UAppCfg.EMAIL_MODE)))
{
mailGun(to, cc, bcc, from, fromName, subject, message, htmlMessage, attachments, campaignId);
return;
}
boolean debug = false;
String emailHost = UOpts.getString(UAppCfg.EMAIL_HOST);
String emailPort = UOpts.getString(UAppCfg.EMAIL_PORT);
if (emailPort == null || emailPort.length() == 0)
emailPort = "25";
if (emailHost == null || emailHost.length() == 0)
logger.info("Email Destination Not Set! Property name: " + UAppCfg.EMAIL_HOST);
else
logger.info("Email Destination Info => " + emailHost + ":" + emailPort);
// Set the host smtp address
Properties props = new Properties();
props.put("mail.smtp.host", emailHost);
props.put("mail.smtp.port", emailPort);
if (UOpts.getBool(UAppCfg.EMAIL_TLS))
{
props.put("mail.smtp.starttls.enable","true");
}
if (UOpts.getBool(UAppCfg.EMAIL_SECURE_SSL))
{
props.put("mail.smtp.EnableSSL.enable","true");
props.put("mail.smtp.socketFactory.port", emailPort);
props.put("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory");
props.put("mail.smtp.socketFactory.fallback", "false");
}
Session session = null;
if (UOpts.getBool(UAppCfg.EMAIL_AUTH))
{
props.put("mail.smtp.auth", "true");
Authenticator auth = new Authenticator() {
public PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(UOpts.getString(UAppCfg.EMAIL_AUTH_USER), UOpts.getString(UAppCfg.EMAIL_AUTH_PASS));
}
};
session = Session.getDefaultInstance(props, auth);
}
else
session = Session.getDefaultInstance(props, null);
// create some properties and get the default Session
session.setDebug(debug);
// create a message
Message msg = new MimeMessage(session);
// set the from and to address
InternetAddress addressFrom = null;
try {
addressFrom = new InternetAddress(from, fromName);;
msg.setFrom(addressFrom);
msg.setRecipients(Message.RecipientType.TO, to);
if (cc != null)
msg.setRecipients(Message.RecipientType.CC, cc);
if (bcc != null)
msg.setRecipients(Message.RecipientType.BCC, cc);
// Setting the Subject and Content Type
msg.addHeader("X-UStack", "1.0");
msg.setSubject(MimeUtility.encodeText(subject, "utf-8", "B"));
msg.setSentDate(new Date());
if (htmlMessage == null && (attachments == null || attachments.size() == 0))
msg.setContent(message, "text/plain; charset=UTF-8");
else
{
Multipart mp = new MimeMultipart("alternative");
// Text Body
MimeBodyPart text = new MimeBodyPart();
text.setText(message);
text.setHeader("MIME-Version" , "1.0" );
text.setHeader("Content-Type" , "text/plain; charset=UTF-8");
mp.addBodyPart(text);
if (htmlMessage != null)
{
// HTML Body
MimeBodyPart html = new MimeBodyPart();
html.setContent(htmlMessage, "text/html");
html.setHeader("MIME-Version" , "1.0" );
html.setHeader("Content-Type" , "text/html" );
mp.addBodyPart(html);
}
// Add attachments last
if (attachments != null)
{
Enumeration enu = attachments.keys();
while (enu.hasMoreElements())
{
String name = enu.nextElement();
File src = attachments.get(name);
if (src.exists())
{
logger.info("\t- Adding file [" + src + "] to message as '" + name + "'");
MimeBodyPart attachmentPart = new MimeBodyPart();
attachmentPart.setDataHandler(new DataHandler(new FileDataSource(src)));
attachmentPart.setFileName(name);
mp.addBodyPart(attachmentPart);
}
else
logger.error("\t- Unable to locate file [" + src + "] for attachment to message");
}
}
// Set Multipart as the message's content
msg.setContent(mp);
}
msg.saveChanges();
logger.info("Sending Email [" + from + " => " + to[0] + "] // Subj: '" + subject + "' // " + message + " via " + props.get("mail.smtp.host") + ":" + props.get("mail.smtp.port"));
Transport transport = session.getTransport("smtp");
transport.connect((String)props.get("mail.smtp.host"), Integer.valueOf((String)props.get("mail.smtp.port")), null, null);
transport.sendMessage(msg, msg.getAllRecipients());
transport.close();
} catch (Exception err) {
// TODO: Save message and resend later
logger.error("Email delivery failed", err);
}
}
public static void mailGun(InternetAddress[] to, InternetAddress[] cc, InternetAddress[] bcc, String from, String fromName, String subject, String message, String htmlMessage, Hashtable attachments, String campaignId) throws AddressException
{
Client client = Client.create();
client.addFilter(new HTTPBasicAuthFilter("api", UOpts.getString(UAppCfg.MAILGUN_KEY)));
MultivaluedMapImpl formData = new MultivaluedMapImpl();
WebResource webResource = client.resource(String.format("https://api.mailgun.net/v2/%s/messages", UOpts.getString(UAppCfg.MAILGUN_DOMAIN)));
String toStr = getList(to);
String ccStr = getList(cc);
String bccStr = getList(bcc);
formData = new MultivaluedMapImpl();
formData.add("from", String.format("%s <%s>", fromName ,from));
formData.add("to", toStr);
if (cc != null)
formData.add("cc", ccStr);
if (bcc != null)
formData.add("bcc", bccStr);
formData.add("subject", subject);
formData.add("text", message);
if (htmlMessage != null)
formData.add("html", htmlMessage);
if (campaignId != null)
formData.add("o:campaign", campaignId);
// MultiPart multiPart = new MultiPart();
// multiPart.bodyPart(new BodyPart(project, MediaType.APPLICATION_XML_TYPE)).
ClientResponse clientResponse = webResource.type(MediaType.APPLICATION_FORM_URLENCODED).post(ClientResponse.class, formData);
String output = clientResponse.getEntity(String.class);
logger.info("Sending Email [" + from + " => " + to[0] + "] // Subj: '" + subject + "' // " + message + " via MAILGUN");
logger.info(String.format("MailGun Response: %s", output));
}
private static String getList(InternetAddress[] addrs)
{
if (addrs == null || addrs.length == 0)
return null;
StringBuffer buf = new StringBuffer();
for (int i = 0; i < addrs.length; i++)
{
InternetAddress addr = addrs[i];
buf.append(addr.toString());
if ((i + 1) < addrs.length)
buf.append(",");
}
return buf.toString();
}
}
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