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• ServletInitialHandler.java

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io.undertow.servlet.handlers.ServletInitialHandler Maven / Gradle / Ivy

/*
 * JBoss, Home of Professional Open Source.
 * Copyright 2014 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.handlers;

import java.security.AccessController;
import java.security.PrivilegedExceptionAction;
import java.util.Map;
import java.util.concurrent.Executor;

import jakarta.servlet.DispatcherType;
import jakarta.servlet.ServletException;
import jakarta.servlet.ServletRequest;
import jakarta.servlet.ServletResponse;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;

import io.undertow.UndertowLogger;
import io.undertow.server.HttpHandler;
import io.undertow.server.HttpServerExchange;
import io.undertow.servlet.api.Deployment;
import io.undertow.servlet.api.ExceptionHandler;
import io.undertow.servlet.api.LoggingExceptionHandler;
import io.undertow.servlet.api.ServletDispatcher;
import io.undertow.servlet.api.ThreadSetupHandler;
import io.undertow.servlet.core.ApplicationListeners;
import io.undertow.servlet.core.ServletBlockingHttpExchange;
import io.undertow.servlet.spec.AsyncContextImpl;
import io.undertow.servlet.spec.HttpServletRequestImpl;
import io.undertow.servlet.spec.HttpServletResponseImpl;
import io.undertow.servlet.spec.RequestDispatcherImpl;
import io.undertow.servlet.spec.ServletContextImpl;
import io.undertow.httpcore.StatusCodes;

/**
 * This must be the initial handler in the blocking servlet chain. This sets up the request and response objects,
 * and attaches them the to exchange.
 *
 * @author Stuart Douglas
 */
public class ServletInitialHandler implements HttpHandler, ServletDispatcher {

    private static final RuntimePermission PERMISSION = new RuntimePermission("io.undertow.servlet.CREATE_INITIAL_HANDLER");

    private final HttpHandler next;
    //private final HttpHandler asyncPath;

    private final ThreadSetupHandler.Action firstRequestHandler;

    private final ServletContextImpl servletContext;

    private final ApplicationListeners listeners;

    private final ServletPathMatches paths;

    private final ExceptionHandler exceptionHandler;
    private final HttpHandler dispatchHandler = new HttpHandler() {
        @Override
        public void handleRequest(final HttpServerExchange exchange) throws Exception {
            final ServletRequestContext servletRequestContext = exchange.getAttachment(ServletRequestContext.ATTACHMENT_KEY);
            if (System.getSecurityManager() == null) {
                dispatchRequest(exchange, servletRequestContext, servletRequestContext.getOriginalServletPathMatch().getServletChain(), DispatcherType.REQUEST);
            } else {
                //sometimes thread pools inherit some random
                AccessController.doPrivileged(new PrivilegedExceptionAction