org.picketlink.identity.federation.api.util.DeflateUtil Maven / Gradle / Ivy
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* Copyright 2008, Red Hat Middleware LLC, and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.picketlink.identity.federation.api.util;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.zip.Deflater;
import java.util.zip.DeflaterOutputStream;
import java.util.zip.Inflater;
import java.util.zip.InflaterInputStream;
/**
* Encoder of saml messages based on DEFLATE compression
* @author [email protected]
* @since Dec 11, 2008
*/
public class DeflateUtil
{
/**
* Apply DEFLATE encoding
* @param message
* @return
* @throws IOException
*/
public static byte[] encode(byte[] message) throws IOException
{
ByteArrayOutputStream baos = new ByteArrayOutputStream();
Deflater deflater = new Deflater(Deflater.DEFLATED, true);
DeflaterOutputStream deflaterStream = new DeflaterOutputStream(baos, deflater);
deflaterStream.write(message);
deflaterStream.finish();
return baos.toByteArray();
}
/**
* Apply DEFLATE encoding
* @param message
* @return
* @throws IOException
*/
public static byte[] encode(String message) throws IOException
{
return encode(message.getBytes());
}
/**
* DEFLATE decoding
* @param msgToDecode the message that needs decoding
* @return
*/
public static InputStream decode(byte[] msgToDecode)
{
ByteArrayInputStream bais = new ByteArrayInputStream(msgToDecode);
return new InflaterInputStream(bais, new Inflater(true));
}
}