talx.util
Class AutoUpdateBodyPart

java.lang.Object
  javax.mail.BodyPart
      javax.mail.internet.MimeBodyPart
          talx.util.AutoUpdateBodyPart

All Implemented Interfaces:

javax.mail.internet.MimePart, javax.mail.Part

public class AutoUpdateBodyPart

extends javax.mail.internet.MimeBodyPart

Overrides the writeTo method to update headers first and use CRLF line breaks. This class extends MimeBodyPart to update the headers before writing out the content. This is necessary in order to sign the content. In the super class, the sequence:

     MimeMessage mm = new MimeMessage();
     MimeMultipart mp = new MimeMultipart();
     MimeBodyPart mbp = new MimeBodyPart();
     mbp.setText(content);
     mbp.writeTo(securityStream);
     mp.addBodyPart(mbp);
     mp.addBodyPart(sign(securityStream));
     mm.setContent(mp);
     transport.send(m);
 

would result in an invalid signature. This is because the updateHeaders method would not be called on mbp until the call to send. Thus, the signature would be valid only for the bytes without the additional headers added for transport. This is inconsistent with the multipart/signed specification (RFC 2633). This class solves that problem by calling updateHeaders prior to writing the bytes to the output stream. So, any additional headers have already been inserted when the output stream is written.

Field Summary

Fields inherited from class javax.mail.internet.MimeBodyPart

content, contentStream, dh, headers

Fields inherited from class javax.mail.BodyPart

parent

Fields inherited from interface javax.mail.Part

ATTACHMENT, INLINE

Constructor Summary

AutoUpdateBodyPart()

Method Summary

void	writeTo(java.io.OutputStream os)

Methods inherited from class javax.mail.internet.MimeBodyPart

addHeader, addHeaderLine, getAllHeaderLines, getAllHeaders, getContent, getContentID, getContentLanguage, getContentMD5, getContentStream, getContentType, getDataHandler, getDescription, getDisposition, getEncoding, getFileName, getHeader, getHeader, getInputStream, getLineCount, getMatchingHeaderLines, getMatchingHeaders, getNonMatchingHeaderLines, getNonMatchingHeaders, getRawInputStream, getSize, isMimeType, removeHeader, setContent, setContent, setContentID, setContentLanguage, setContentMD5, setDataHandler, setDescription, setDescription, setDisposition, setFileName, setHeader, setText, setText, updateHeaders

Methods inherited from class javax.mail.BodyPart

getParent

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AutoUpdateBodyPart

public AutoUpdateBodyPart()

Method Detail

writeTo

public void writeTo(java.io.OutputStream os)
             throws java.io.IOException,
                    javax.mail.MessagingException

Throws:

java.io.IOException

javax.mail.MessagingException