com.proofpoint.http.server.GZipRequestFilter.java Source code

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Here is the source code for com.proofpoint.http.server.GZipRequestFilter.java

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/*
 * Copyright 2010 Proofpoint, Inc.
 *
 * 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 com.proofpoint.http.server;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

import static org.apache.commons.lang.StringUtils.equalsIgnoreCase;

public class GZipRequestFilter implements Filter {
    public void init(FilterConfig filterConfig) throws ServletException {
    }

    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain)
            throws IOException, ServletException {
        HttpServletRequest request = (HttpServletRequest) servletRequest;
        HttpServletResponse response = (HttpServletResponse) servletResponse;

        String contentEncoding = request.getHeader("content-encoding");
        if (equalsIgnoreCase(contentEncoding, "gzip")) { // TODO: gzip; q=0.0 should mean "don't want gzip"
            filterChain.doFilter(new GZipRequestWrapper(request), servletResponse);
        } else {
            filterChain.doFilter(request, response);
        }
    }

    public void destroy() {
    }
}