1 /**************************************************************** 2 * Licensed to the Apache Software Foundation (ASF) under one * 3 * or more contributor license agreements. See the NOTICE file * 4 * distributed with this work for additional information * 5 * regarding copyright ownership. The ASF licenses this file * 6 * to you under the Apache License, Version 2.0 (the * 7 * "License"); you may not use this file except in compliance * 8 * with the License. You may obtain a copy of the License at * 9 * * 10 * http://www.apache.org/licenses/LICENSE-2.0 * 11 * * 12 * Unless required by applicable law or agreed to in writing, * 13 * software distributed under the License is distributed on an * 14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * 15 * KIND, either express or implied. See the License for the * 16 * specific language governing permissions and limitations * 17 * under the License. * 18 ****************************************************************/ 19 20 21 22 package org.apache.james.transport.mailets; 23 24 import org.apache.mailet.base.GenericMailet; 25 import org.apache.mailet.Mail; 26 import org.apache.mailet.MailAddress; 27 28 import javax.mail.internet.MimeMessage; 29 30 /** 31 * Returns the current time for the mail server. Sample configuration: 32 * <pre><code> 33 * <mailet match="RecipientIs=time@cadenza.lokitech.com" class="ServerTime"> 34 * </mailet> 35 * </code></pre> 36 * 37 */ 38 public class ServerTime extends GenericMailet { 39 /** 40 * Sends a message back to the sender indicating what time the server thinks it is. 41 * 42 * @param mail the mail being processed 43 * 44 * @throws javax.mail.MessagingException if an error is encountered while formulating the reply message 45 */ 46 public void service(Mail mail) throws javax.mail.MessagingException { 47 MimeMessage response = (MimeMessage)mail.getMessage().reply(false); 48 response.setSubject("The time is now..."); 49 StringBuffer textBuffer = 50 new StringBuffer(128) 51 .append("This mail server thinks it's ") 52 .append((new java.util.Date()).toString()) 53 .append("."); 54 response.setText(textBuffer.toString()); 55 56 // Someone manually checking the server time by hand may send 57 // an formatted message, lacking From and To headers. If the 58 // response fields are null, try setting them from the SMTP 59 // MAIL FROM/RCPT TO commands used to send the inquiry. 60 61 if (response.getFrom() == null) { 62 response.setFrom(((MailAddress)mail.getRecipients().iterator().next()).toInternetAddress()); 63 } 64 65 if (response.getAllRecipients() == null) { 66 response.setRecipients(MimeMessage.RecipientType.TO, mail.getSender().toString()); 67 } 68 69 response.saveChanges(); 70 getMailetContext().sendMail(response); 71 } 72 73 /** 74 * Return a string describing this mailet. 75 * 76 * @return a string describing this mailet 77 */ 78 public String getMailetInfo() { 79 return "ServerTime Mailet"; 80 } 81 } 82