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/*
* $Id: TextPlainCanonicalizer.java,v 1.2 2010-10-21 15:37:19 snajper Exp $
* $Revision: 1.2 $
* $Date: 2010-10-21 15:37:19 $
*/
package com.sun.xml.wss.impl.c14n;
import java.io.IOException;
import java.io.ByteArrayOutputStream;
import com.sun.xml.wss.util.CRLFOutputStream;
import com.sun.xml.wss.XWSSecurityException;
import java.io.ByteArrayInputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.logging.Level;
/**
*
* Implementation of a text/plain canonicalizer as per rules
* defined in RFC 2046 (http://www.rfc-editor.org/rfc/rfc2046.txt)
* Section 4.1.
*
* @author XWS-Security Team
*/
public class TextPlainCanonicalizer extends Canonicalizer {
public TextPlainCanonicalizer() {}
public TextPlainCanonicalizer(String charset) {
super(charset);
}
public InputStream canonicalize(InputStream input,OutputStream outputStream)
throws javax.xml.crypto.dsig.TransformException {
int len=0;
byte [] data= null;
try{
data = new byte[128];
len = input.read(data);
} catch (IOException e) {
log.log(Level.SEVERE, "WSS1002.error.canonicalizing.textplain",
new Object[] {e.getMessage()});
throw new javax.xml.crypto.dsig.TransformException(e);
}
CRLFOutputStream crlfOutStream = null;
ByteArrayOutputStream bout = null;
if(outputStream == null){
bout = new ByteArrayOutputStream();
crlfOutStream = new CRLFOutputStream(bout);
}else{
crlfOutStream = new CRLFOutputStream(outputStream);
}
while(len > 0){
try {
crlfOutStream.write(data,0,len);
len = input.read(data);
} catch (IOException e) {
log.log(Level.SEVERE, "WSS1002.error.canonicalizing.textplain",
new Object[] {e.getMessage()});
throw new javax.xml.crypto.dsig.TransformException(e);
}
}
if(outputStream == null){
byte [] inputData = bout.toByteArray();
return new ByteArrayInputStream(inputData);
}
return null;
}
/*
* Important aspects of "text" media type canonicalization include line
* ending normalization to <CR><LF>.
* Section 4.1.1. [RFC 2046]
*/
public byte[] canonicalize(byte[] inputBytes) throws XWSSecurityException {
ByteArrayOutputStream bout = new ByteArrayOutputStream();
CRLFOutputStream crlfOutStream = new CRLFOutputStream(bout);
try {
crlfOutStream.write(inputBytes);
} catch (IOException e) {
log.log(Level.SEVERE, "WSS1002.error.canonicalizing.textplain",
new Object[] {e.getMessage()});
throw new XWSSecurityException(e);
}
return bout.toByteArray();
}
}