/****************************************************************
* Licensed to the Apache Software Foundation (ASF) under one *
* or more contributor license agreements. See the NOTICE file *
* distributed with this work for additional information *
* regarding copyright ownership. The ASF licenses this file *
* to you under the Apache License, Version 2.0 (the *
* "License"); you may not use this file except in compliance *
* with the License. You may obtain a copy of the License at *
* *
* http://www.apache.org/licenses/LICENSE-2.0 *
* *
* Unless required by applicable law or agreed to in writing, *
* software distributed under the License is distributed on an *
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY *
* KIND, either express or implied. See the License for the *
* specific language governing permissions and limitations *
* under the License. *
****************************************************************/
package org.apache.james.transport.mailets;
import java.util.Enumeration;
import javax.mail.MessagingException;
import javax.mail.internet.MimeMessage;
import org.apache.mailet.base.GenericMailet;
import org.apache.mailet.Mail;
import java.io.InputStream;
import java.lang.StringBuffer;
/**
* Logs Message Headers and/or Body.
* If the "passThrough" in confs is true the mail will be left untouched in
* the pipe. If false will be destroyed. Default is true.
*
* @version This is $Revision: 1.8.4.2 $
*/
public class LogMessage extends GenericMailet {
/**
* Whether this mailet should allow mails to be processed by additional mailets
* or mark it as finished.
*/
private boolean passThrough = true;
private boolean headers = true;
private boolean body = true;
private int bodyMax = 0;
private String comment = null;
/**
* Initialize the mailet, loading configuration information.
*/
public void init() {
try {
passThrough = (getInitParameter("passThrough") == null) ? true : new Boolean(getInitParameter("passThrough")).booleanValue();
headers = (getInitParameter("headers") == null) ? true : new Boolean(getInitParameter("headers")).booleanValue();
body = (getInitParameter("body") == null) ? true : new Boolean(getInitParameter("body")).booleanValue();
bodyMax = (getInitParameter("maxBody") == null) ? 0 : Integer.parseInt(getInitParameter("maxBody"));
comment = getInitParameter("comment");
} catch (Exception e) {
// Ignore exception, default to true
}
}
/**
* Log a particular message
*
* @param mail the mail to process
*/
public void service(Mail mail) {
log(new StringBuffer(160).append("Logging mail ").append(mail.getName()).toString());
if (comment != null) log(comment);
try {
if (headers) log(getMessageHeaders(mail.getMessage()));
if (body) {
int len = bodyMax > 0 ? bodyMax : mail.getMessage().getSize();
StringBuffer text = new StringBuffer(len);
InputStream is = mail.getMessage().getRawInputStream();
byte[] buf = new byte[1024];
int read = 0;
while (text.length() < len && (read = is.read(buf)) > -1) {
text.append(new String(buf, 0, Math.min(read, len - text.length())));
}
log(text.toString());
}
}
catch (MessagingException e) {
log("Error logging message.", e);
}
catch (java.io.IOException e) {
log("Error logging message.", e);
}
if (!passThrough) {
mail.setState(Mail.GHOST);
}
}
/**
* Utility method for obtaining a string representation of a
* Message's headers
*
* @param message
*/
private String getMessageHeaders(MimeMessage message) throws MessagingException {
Enumeration heads = message.getAllHeaderLines();
StringBuffer headBuffer = new StringBuffer(1024).append("\n");
while(heads.hasMoreElements()) {
headBuffer.append(heads.nextElement().toString()).append("\n");
}
return headBuffer.toString();
}
/**
* Return a string describing this mailet.
*
* @return a string describing this mailet
*/
public String getMailetInfo() {
return "LogHeaders Mailet";
}
}