/**
* Base64 the given SAML message.
*
* @param message the SAML message
* @return Base64 encoded message
* @throws MarshallingException if there is a problem marshalling the XMLObject
* @throws UnsupportedEncodingException If the named charset is not supported
*/
@Nonnull
public String encodeMessage(@Nonnull final SAMLObject message)
throws MarshallingException, UnsupportedEncodingException {
final Element domMessage = XMLObjectSupport.marshall(message);
final String messageXML = SerializeSupport.nodeToString(domMessage);
return Base64Support.encode(messageXML.getBytes("UTF-8"), Base64Support.UNCHUNKED);
}
/**
* DEFLATE (RFC1951) compresses the given SAML message.
*
* @param message SAML message
* @return DEFLATE compressed message
* @throws MessageEncodingException thrown if there is a problem compressing the message
*/
protected String deflateAndBase64Encode(SAMLObject message) throws MessageEncodingException {
log.debug("Deflating and Base64 encoding SAML message");
try {
String messageStr = SerializeSupport.nodeToString(marshallMessage(message));
ByteArrayOutputStream bytesOut = new ByteArrayOutputStream();
Deflater deflater = new Deflater(Deflater.DEFLATED, true);
DeflaterOutputStream deflaterStream = new DeflaterOutputStream(bytesOut, deflater);
deflaterStream.write(messageStr.getBytes("UTF-8"));
deflaterStream.finish();
return Base64Support.encode(bytesOut.toByteArray(), Base64Support.UNCHUNKED);
} catch (IOException e) {
throw new MessageEncodingException("Unable to DEFLATE and Base64 encode SAML message", e);
}
}