/**
 * Licensed to Apereo under one or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information regarding copyright ownership. Apereo
 * licenses this file to you 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 the
 * following location:
 *
 * <p>http://www.apache.org/licenses/LICENSE-2.0
 *
 * <p>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.apereo.portal.url;

import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpServletResponseWrapper;

/**
 * Wrapper for all portal responses
 *
 */
public class PortalHttpServletResponseWrapper extends HttpServletResponseWrapper {
    private final Object urlEncodingMutex = new Object();

    public PortalHttpServletResponseWrapper(HttpServletResponse response) {
        super(response);
    }

    /*
     * encoding URLs is not thread-safe in Tomcat, sync around url encoding
     */
    @Override
    public String encodeRedirectUrl(String url) {
        return this.encodeRedirectURL(url);
    }

    @Override
    public String encodeRedirectURL(String url) {
        synchronized (this.urlEncodingMutex) {
            return super.encodeRedirectURL(url);
        }
    }

    @Override
    public String encodeUrl(String url) {
        return this.encodeURL(url);
    }

    @Override
    public String encodeURL(String url) {
        synchronized (this.urlEncodingMutex) {
            return super.encodeURL(url);
        }
    }
}