ResponseBodyByteHttpPanelViewModel.java

/*
 * Zed Attack Proxy (ZAP) and its related class files.
 * 
 * ZAP is an HTTP/HTTPS proxy for assessing web application security.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); 
 * you may not use this file except in compliance with the License. 
 * You may obtain a copy of the License at 
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0 
 *   
 * Unless required by applicable law or agreed to in writing, software 
 * distributed under the License is distributed on an "AS IS" BASIS, 
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
 * See the License for the specific language governing permissions and 
 * limitations under the License. 
 */
package org.zaproxy.zap.extension.httppanel.view.impl.models.http.response;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.util.zip.GZIPInputStream;
import java.util.zip.GZIPOutputStream;

import org.parosproxy.paros.network.HttpHeader;
import org.zaproxy.zap.extension.httppanel.view.impl.models.http.AbstractHttpByteHttpPanelViewModel;
import org.zaproxy.zap.extension.httppanel.view.impl.models.http.HttpPanelViewModelUtils;

public class ResponseBodyByteHttpPanelViewModel extends AbstractHttpByteHttpPanelViewModel {

	@Override
	public byte[] getData() {
		if (httpMessage == null) {
			return new byte[0];
		}
		
		if (HttpHeader.GZIP.equals(httpMessage.getResponseHeader().getHeader(HttpHeader.CONTENT_ENCODING))) {
			// Uncompress gziped content
			try {
				ByteArrayInputStream bais = new ByteArrayInputStream(httpMessage.getResponseBody().getBytes());
				GZIPInputStream gis = new GZIPInputStream(bais);
				InputStreamReader isr = new InputStreamReader(gis);
				BufferedReader br = new BufferedReader(isr);
				StringBuilder sb = new StringBuilder();
				String line = null;
				while ((line = br.readLine()) != null) {
					sb.append(line);
				}
				br.close();
				isr.close();
				gis.close();
				bais.close();
				return sb.toString().getBytes();
			} catch (IOException e) {
				//this.log.error(e.getMessage(), e);
				System.out.println(e);
			}
		}
		
		return httpMessage.getResponseBody().getBytes();
	}

	@Override
	public void setData(byte[] data) {
		if (httpMessage == null) {
			return ;
		}
		if (HttpHeader.GZIP.equals(httpMessage.getResponseHeader().getHeader(HttpHeader.CONTENT_ENCODING))) {
			// Uncompress gziped content
			try {
				ByteArrayOutputStream baos = new ByteArrayOutputStream();
				GZIPOutputStream gis = new GZIPOutputStream(baos);
				BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(gis, "UTF-8"));
				bw.append(new String(data));
				bw.close();
				gis.close();
				baos.close();
				httpMessage.getResponseBody().setBody(baos.toByteArray());
				HttpPanelViewModelUtils.updateResponseContentLength(httpMessage);
			} catch (IOException e) {
				//this.log.error(e.getMessage(), e);
				System.out.println(e);
			}
		} else {
			httpMessage.getResponseBody().setBody(data);
			HttpPanelViewModelUtils.updateResponseContentLength(httpMessage);		}
	}
}