RedirectEncodedServlet.java

/*
 * JBoss, Home of Professional Open Source.
 * Copyright 2021 Red Hat, Inc., and individual contributors
 * as indicated by the @author tags.
 *
 * 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 io.undertow.servlet.test.redirect;

import java.io.IOException;
import java.net.URLEncoder;

import jakarta.servlet.ServletException;
import jakarta.servlet.http.HttpServlet;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;

/**
 *
 * @author baranowb
 * @author Emond Papegaaij
 *
 */
public class RedirectEncodedServlet extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        if (req.getRequestURI().contains("/invalid-")) {
            if (req.getRequestURI().contains("subpath")) {
                resp.getWriter().write(req.getRequestURI());
            } else {
                resp.sendRedirect(resp.encodeRedirectURL("./subpath"));
            }
        } else {
            final String x = "./" + URLEncoder.encode("invalid-[123]", "UTF-8") + "/main";
            resp.sendRedirect(resp.encodeRedirectURL(x));
        }
    }
}