iaik.smime
Class SMimeContent

java.lang.Object
  iaik.smime.SMimeContent

All Implemented Interfaces:

CryptoContent

Direct Known Subclasses:

CompressedContent, EncryptedContent

public abstract class SMimeContent
extends java.lang.Object
implements CryptoContent

Abstract class that implements some methods that are used by both, EncryptedContent and CompressedContent. Some of these method are also used by SignedContent, but are reimplemented there because multiple inheritence is not supported by Java.

See Also:

EncryptedContent, CompressedContent

Constructor Summary

protected

SMimeContent() Default constructor.

Method Summary

java.lang.Object	getContent() Returns the content as a Java object.
java.lang.String	getContentType() Returns the ContentType header and any attached parameters.
abstract javax.activation.DataHandler	getDataHandler() Returns a DataHandler holding the content.
java.io.InputStream	getInputStream() Returns an InputStream from which the content can be read.
void	setBlockSize(int blockSize) Sets the block size for defining the length of each definite primitive encoded octet string component.
void	setContent(javax.mail.Multipart multipart) Supplies the content as MIME Multipart.
void	setContent(java.lang.Object content, java.lang.String type) Sets the content to be processed.
void	setContentContentHeaders(javax.mail.Header[] headers) Set some headers for the entity to be signed.
void	setContentContentTransferEncoding(java.lang.String cte) Sets the content transfer encoding of the entity to be signed.
void	setDataHandler(javax.activation.DataHandler dataHandler) Sets the content wrapped by a javax.activation.DataHandler.
void	setText(java.lang.String text) Sets the text content.

Methods inherited from class java.lang.Object

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

Methods inherited from interface iaik.smime.CryptoContent

getSMimeType, setHeaders

Constructor Detail

SMimeContent

protected SMimeContent()

Default constructor.

Method Detail

getContentType

public java.lang.String getContentType()

Returns the ContentType header and any attached parameters. This method shall be used when setting this SMIME content object (EncryptedContent, or CompressedContent as the content of a MimeMessage, e.g.:

 MimeMessage msg = ...;
 EncryptedContent ec = new EncryptedContent();
 msg.setContent(ec, ec.getContentType());
 ...
 

or

 MimeMessage msg = ...;
 CompressedContent compressed = ...;
 ...
 msg.setContent(compressed, compressed.getContentType());
 ...
 

Specified by:

getContentType in interface CryptoContent

Returns:

the content type header

setContent

public void setContent(java.lang.Object content,
                       java.lang.String type)
                throws javax.mail.MessagingException

Sets the content to be processed.

Parameters:

content - a Java object

type - MIME type of this object

Throws:

javax.mail.MessagingException - if an error occurs while preparing the content

setContent

public void setContent(javax.mail.Multipart multipart)
                throws javax.mail.MessagingException

Supplies the content as MIME Multipart.

Parameters:

multipart - the multipart content

Throws:

javax.mail.MessagingException - if an error occurs while preparing the content

setText

public void setText(java.lang.String text)
             throws javax.mail.MessagingException

Sets the text content. The supplied text will be packed into a MIME entity with content type "text/plain".

Parameters:

text - the text content

Throws:

javax.mail.MessagingException - if an error occurs while preparing the content

setDataHandler

public void setDataHandler(javax.activation.DataHandler dataHandler)
                    throws javax.mail.MessagingException

Sets the content wrapped by a javax.activation.DataHandler. The DataHandler wraps around the actual content.

For more information about DataHandler usage see the JavaBeans Activation Framework (JAF) sepecification.

Parameters:

dataHandler - the DataHandler with the content to be compressed

Throws:

javax.mail.MessagingException - if an error occurs while preparing the content

getContent

public java.lang.Object getContent()
                            throws java.io.IOException,
                                   javax.mail.MessagingException

Returns the content as a Java object. The type of the returned object depends on the content itself. For example, the object returned for "text/plain" content is usually a String object. For content-types that are unknown to the JAF data content handler system, an input stream is returned as the content.

Returns:

the content as Java object

Throws:

java.io.IOException - if an I/O error occurs when getting the content from the inherent data handler

javax.mail.MessagingException - if an error occurs when fetching the inherent data handler

getDataHandler

public abstract javax.activation.DataHandler getDataHandler()
                                                     throws javax.mail.MessagingException

Returns a DataHandler holding the content.

Returns:

a DataHandler with the content

Throws:

javax.mail.MessagingException - if an error occurs when fetching the data handler

getInputStream

public java.io.InputStream getInputStream()
                                   throws java.io.IOException,
                                          javax.mail.MessagingException

Returns an InputStream from which the content can be read. Any mail-specific transfer encodings will be decoded before the input stream is provided.

Returns:

an InputStream holding from which the content can be read

Throws:

java.io.IOException - if an I/O error occurs when getting the input stream from the inherent data handler

javax.mail.MessagingException - if an error occurs when fetching the inherent data handler

setContentContentTransferEncoding

public void setContentContentTransferEncoding(java.lang.String cte)

Sets the content transfer encoding of the entity to be signed. This method allows to set the content transfer encoding for the inner entity when method setText or setDataHandler has been used for supplying the content. This method maybe called BEFORE setting the content (to avoid header update overhead during the saveChanges run).

Parameters:

cte - the content transfer encoding to be applied to the inner entity to be signed

setContentContentHeaders

public void setContentContentHeaders(javax.mail.Header[] headers)

Set some headers for the entity to be signed. This method allows to set some headers for the inner entity when method setText or setDataHandler has been used for supplying the content. This method maybe called BEFORE setting the content (to avoid header update overhead during the saveChanges run).

Parameters:

headers - the headers to be applied to the inner entity to be signed

setBlockSize

public void setBlockSize(int blockSize)

Sets the block size for defining the length of each definite primitive encoded octet string component. If the value of blockSize is smaller or equal to zero the whole encrypted data is encoded as definite primitive octet string.

Parameters:

blockSize - for defining the encoding scheme and setting the octet string component length, if positive