XSSServletRequestWrapper.java

/*
 * Copyright 2015 JBoss, by Red Hat, 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 org.uberfire.ext.security.server;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletRequestWrapper;

import org.apache.commons.lang3.StringEscapeUtils;

/**
 * Note: This implementation has been borrowed from Aerogear Security.
 */
public class XSSServletRequestWrapper extends HttpServletRequestWrapper {

    public XSSServletRequestWrapper(final HttpServletRequest request) {
        super(request);
    }

    @Override
    public String[] getParameterValues(final String param) {
        final String[] values = super.getParameterValues(param);

        for (int i = 0; i < values.length; i++) {
            values[i] = StringEscapeUtils.escapeHtml4(values[i]);
        }

        return values;
    }

    @Override
    public String getParameter(final String param) {
        return StringEscapeUtils.escapeHtml4(super.getParameter(param));
    }
}