be.fedict.eid.applet.service.impl.HttpServletRequestHttpReceiver.java Source code

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Here is the source code for be.fedict.eid.applet.service.impl.HttpServletRequestHttpReceiver.java

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/*
 * eID Applet Project.
 * Copyright (C) 2008-2009 FedICT.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License version
 * 3.0 as published by the Free Software Foundation.
 *
 * 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, see 
 * http://www.gnu.org/licenses/.
 */

package be.fedict.eid.applet.service.impl;

import java.io.IOException;
import java.util.Enumeration;
import java.util.LinkedList;
import java.util.List;

import javax.servlet.ServletInputStream;
import javax.servlet.http.HttpServletRequest;

import org.apache.commons.io.IOUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import be.fedict.eid.applet.shared.protocol.HttpReceiver;

/**
 * HttpServletRequest based HTTP receiver.
 * 
 * @author Frank Cornelis
 * 
 */
public class HttpServletRequestHttpReceiver implements HttpReceiver {

    private static final Log LOG = LogFactory.getLog(HttpServletRequestHttpReceiver.class);

    private final HttpServletRequest httpServletRequest;

    private final boolean skipSecureConnectionCheck;

    /**
     * Main constructor.
     * 
     * @param httpServletRequest
     * @param skipSecureConnectionCheck
     *            set to <code>true</code> to skip the check on a secure SSL
     *            connection.
     */
    public HttpServletRequestHttpReceiver(HttpServletRequest httpServletRequest,
            boolean skipSecureConnectionCheck) {
        this.httpServletRequest = httpServletRequest;
        this.skipSecureConnectionCheck = skipSecureConnectionCheck;
    }

    public byte[] getBody() {
        try {
            ServletInputStream inputStream = this.httpServletRequest.getInputStream();
            byte[] body = IOUtils.toByteArray(inputStream);
            return body;
        } catch (IOException e) {
            throw new RuntimeException("IO error: " + e.getMessage(), e);
        }
    }

    @SuppressWarnings("unchecked")
    public List<String> getHeaderNames() {
        Enumeration headerNamesEnumeration = this.httpServletRequest.getHeaderNames();
        List<String> headerNames = new LinkedList<String>();
        while (headerNamesEnumeration.hasMoreElements()) {
            String headerName = (String) headerNamesEnumeration.nextElement();
            headerNames.add(headerName);
        }
        return headerNames;
    }

    public String getHeaderValue(String headerName) {
        return this.httpServletRequest.getHeader(headerName);
    }

    public boolean isSecure() {
        String referrerHeader = this.httpServletRequest.getHeader("Referer");
        if (null != referrerHeader) {
            /*
             * Only the eID Applet should be able to call our eID Applet
             * Service.
             */
            LOG.warn("Refered HTTP header should not be present");
            return false;
        }
        if (true == this.skipSecureConnectionCheck) {
            return true;
        }
        if (false == this.httpServletRequest.isSecure()) {
            return false;
        }
        return true;
    }
}