org.awesomeagile.webapp.config.SslRedirectConfig.java Source code

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Here is the source code for org.awesomeagile.webapp.config.SslRedirectConfig.java

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package org.awesomeagile.webapp.config;

import java.io.IOException;

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

/*
 * ================================================================================================
 * Awesome Agile
 * %%
 * Copyright (C) 2015 Mark Warren, Phillip Heller, Matt Kubej, Linghong Chen, Stanislav Belov, Qanit Al
 * %%
 * 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.
 * ------------------------------------------------------------------------------------------------
 */
import org.apache.catalina.Context;
import org.apache.catalina.Engine;
import org.apache.catalina.Host;
import org.apache.catalina.Server;
import org.apache.catalina.Service;
import org.apache.catalina.Wrapper;
import org.apache.catalina.connector.Connector;
import org.apache.catalina.core.StandardContext;
import org.apache.catalina.core.StandardEngine;
import org.apache.catalina.core.StandardHost;
import org.apache.catalina.core.StandardService;
import org.apache.catalina.startup.Tomcat;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainer;
import org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainerFactory;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.server.ServletServerHttpRequest;
import org.springframework.web.util.UriComponentsBuilder;

@Configuration
public class SslRedirectConfig {

    @Value("${ssl.redirect.port:8887}")
    private Integer sslRedirectPort;

    @Bean
    public TomcatEmbeddedServletContainerFactory tomcatFactory() {
        return new TomcatEmbeddedServletContainerFactory() {
            @Override
            protected TomcatEmbeddedServletContainer getTomcatEmbeddedServletContainer(Tomcat tomcat) {
                Server server = tomcat.getServer();

                Service service = new StandardService();
                service.setName("ssl-redirect-service");
                Connector connector = new Connector("org.apache.coyote.http11.Http11NioProtocol");
                connector.setPort(sslRedirectPort);
                service.addConnector(connector);
                server.addService(service);

                Engine engine = new StandardEngine();
                service.setContainer(engine);

                Host host = new StandardHost();
                host.setName("ssl-redirect-host");
                engine.addChild(host);
                engine.setDefaultHost(host.getName());

                Context context = new StandardContext();
                context.addLifecycleListener(new Tomcat.FixContextListener());
                context.setName("ssl-redirect-context");
                context.setPath("");
                host.addChild(context);

                Wrapper wrapper = context.createWrapper();
                wrapper.setServlet(new HttpServlet() {
                    @Override
                    public void service(HttpServletRequest req, HttpServletResponse res)
                            throws ServletException, IOException {
                        ServletServerHttpRequest r = new ServletServerHttpRequest(req);
                        UriComponentsBuilder b = UriComponentsBuilder.fromHttpRequest(r);
                        b.scheme("https");
                        b.port(null);
                        res.sendRedirect(b.toUriString());
                    }
                });
                wrapper.setName("ssl-redirect-servlet");
                context.addChild(wrapper);
                context.addServletMapping("/", wrapper.getName());

                return super.getTomcatEmbeddedServletContainer(tomcat);
            }
        };
    }

}