| /* |
| * Copyright (c) 2001-2004 Caucho Technology, Inc. All rights reserved. |
| * |
| * The Apache Software License, Version 1.1 |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * 3. The end-user documentation included with the redistribution, if |
| * any, must include the following acknowlegement: |
| * "This product includes software developed by the |
| * Caucho Technology (http://www.caucho.com/)." |
| * Alternately, this acknowlegement may appear in the software itself, |
| * if and wherever such third-party acknowlegements normally appear. |
| * |
| * 4. The names "Hessian", "Resin", and "Caucho" must not be used to |
| * endorse or promote products derived from this software without prior |
| * written permission. For written permission, please contact |
| * info@caucho.com. |
| * |
| * 5. Products derived from this software may not be called "Resin" |
| * nor may "Resin" appear in their names without prior written |
| * permission of Caucho Technology. |
| * |
| * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
| * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| * DISCLAIMED. IN NO EVENT SHALL CAUCHO TECHNOLOGY OR ITS CONTRIBUTORS |
| * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, |
| * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT |
| * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR |
| * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE |
| * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN |
| * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| * |
| * @author Scott Ferguson |
| */ |
| |
| package com.alibaba.com.caucho.hessian.io; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| import java.util.zip.DeflaterOutputStream; |
| import java.util.zip.InflaterInputStream; |
| |
| public class Deflation extends HessianEnvelope { |
| public Deflation() { |
| } |
| |
| @Override |
| public Hessian2Output wrap(Hessian2Output out) |
| throws IOException { |
| OutputStream os = new DeflateOutputStream(out); |
| |
| Hessian2Output filterOut = new Hessian2Output(os); |
| |
| filterOut.setCloseStreamOnClose(true); |
| |
| return filterOut; |
| } |
| |
| @Override |
| public Hessian2Input unwrap(Hessian2Input in) |
| throws IOException { |
| int version = in.readEnvelope(); |
| |
| String method = in.readMethod(); |
| |
| if (!method.equals(getClass().getName())) |
| throw new IOException("expected hessian Envelope method '" + |
| getClass().getName() + "' at '" + method + "'"); |
| |
| return unwrapHeaders(in); |
| } |
| |
| @Override |
| public Hessian2Input unwrapHeaders(Hessian2Input in) |
| throws IOException { |
| InputStream is = new DeflateInputStream(in); |
| |
| Hessian2Input filter = new Hessian2Input(is); |
| |
| filter.setCloseStreamOnClose(true); |
| |
| return filter; |
| } |
| |
| static class DeflateOutputStream extends OutputStream { |
| private Hessian2Output _out; |
| private OutputStream _bodyOut; |
| private DeflaterOutputStream _deflateOut; |
| |
| DeflateOutputStream(Hessian2Output out) |
| throws IOException { |
| _out = out; |
| |
| _out.startEnvelope(Deflation.class.getName()); |
| |
| _out.writeInt(0); |
| |
| _bodyOut = _out.getBytesOutputStream(); |
| |
| _deflateOut = new DeflaterOutputStream(_bodyOut); |
| } |
| |
| @Override |
| public void write(int ch) |
| throws IOException { |
| _deflateOut.write(ch); |
| } |
| |
| @Override |
| public void write(byte[] buffer, int offset, int length) |
| throws IOException { |
| _deflateOut.write(buffer, offset, length); |
| } |
| |
| @Override |
| public void close() |
| throws IOException { |
| Hessian2Output out = _out; |
| _out = null; |
| |
| if (out != null) { |
| _deflateOut.close(); |
| _bodyOut.close(); |
| |
| out.writeInt(0); |
| |
| out.completeEnvelope(); |
| |
| out.close(); |
| } |
| } |
| } |
| |
| static class DeflateInputStream extends InputStream { |
| private Hessian2Input _in; |
| |
| private InputStream _bodyIn; |
| private InflaterInputStream _inflateIn; |
| |
| DeflateInputStream(Hessian2Input in) |
| throws IOException { |
| _in = in; |
| |
| int len = in.readInt(); |
| |
| if (len != 0) |
| throw new IOException("expected no headers"); |
| |
| _bodyIn = _in.readInputStream(); |
| |
| _inflateIn = new InflaterInputStream(_bodyIn); |
| } |
| |
| @Override |
| public int read() |
| throws IOException { |
| return _inflateIn.read(); |
| } |
| |
| @Override |
| public int read(byte[] buffer, int offset, int length) |
| throws IOException { |
| return _inflateIn.read(buffer, offset, length); |
| } |
| |
| @Override |
| public void close() |
| throws IOException { |
| Hessian2Input in = _in; |
| _in = null; |
| |
| if (in != null) { |
| _inflateIn.close(); |
| _bodyIn.close(); |
| |
| int len = in.readInt(); |
| |
| if (len != 0) |
| throw new IOException("Unexpected footer"); |
| |
| in.completeEnvelope(); |
| |
| in.close(); |
| } |
| } |
| } |
| } |