apache-tomcat-8.5.23-src源码

/* * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF 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 * * 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.apache.catalina.core; import java.io.File; import java.io.IOException; import java.io.InputStream; import java.net.MalformedURLException; import java.net.URL; import java.nio.charset.StandardCharsets; import java.security.AccessController; import java.security.PrivilegedAction; import java.util.ArrayList; import java.util.Arrays; import java.util.Collection; import java.util.Enumeration; import java.util.EventListener; import java.util.HashMap; import java.util.HashSet; import java.util.Iterator; import java.util.LinkedHashMap; import java.util.List; import java.util.Locale; import java.util.Map; import java.util.Map.Entry; import java.util.Set; import java.util.Stack; import java.util.TreeMap; import java.util.concurrent.ConcurrentHashMap; import java.util.concurrent.ConcurrentMap; import java.util.concurrent.CopyOnWriteArrayList; import java.util.concurrent.atomic.AtomicLong; import java.util.concurrent.locks.Lock; import java.util.concurrent.locks.ReadWriteLock; import java.util.concurrent.locks.ReentrantReadWriteLock; import javax.management.ListenerNotFoundException; import javax.management.MBeanNotificationInfo; import javax.management.Notification; import javax.management.NotificationBroadcasterSupport; import javax.management.NotificationEmitter; import javax.management.NotificationFilter; import javax.management.NotificationListener; import javax.naming.NamingException; import javax.servlet.Filter; import javax.servlet.FilterConfig; import javax.servlet.FilterRegistration; import javax.servlet.RequestDispatcher; import javax.servlet.Servlet; import javax.servlet.ServletContainerInitializer; import javax.servlet.ServletContext; import javax.servlet.ServletContextAttributeListener; import javax.servlet.ServletContextEvent; import javax.servlet.ServletContextListener; import javax.servlet.ServletException; import javax.servlet.ServletRegistration; import javax.servlet.ServletRegistration.Dynamic; import javax.servlet.ServletRequest; import javax.servlet.ServletRequestAttributeListener; import javax.servlet.ServletRequestEvent; import javax.servlet.ServletRequestListener; import javax.servlet.ServletSecurityElement; import javax.servlet.SessionCookieConfig; import javax.servlet.SessionTrackingMode; import javax.servlet.descriptor.JspConfigDescriptor; import javax.servlet.http.HttpSessionAttributeListener; import javax.servlet.http.HttpSessionIdListener; import javax.servlet.http.HttpSessionListener; import org.apache.catalina.Authenticator; import org.apache.catalina.Container; import org.apache.catalina.ContainerListener; import org.apache.catalina.Context; import org.apache.catalina.CredentialHandler; import org.apache.catalina.Globals; import org.apache.catalina.Lifecycle; import org.apache.catalina.LifecycleException; import org.apache.catalina.LifecycleListener; import org.apache.catalina.LifecycleState; import org.apache.catalina.Loader; import org.apache.catalina.Manager; import org.apache.catalina.Pipeline; import org.apache.catalina.Realm; import org.apache.catalina.ThreadBindingListener; import org.apache.catalina.Valve; import org.apache.catalina.WebResource; import org.apache.catalina.WebResourceRoot; import org.apache.catalina.Wrapper; import org.apache.catalina.deploy.NamingResourcesImpl; import org.apache.catalina.loader.WebappLoader; import org.apache.catalina.session.StandardManager; import org.apache.catalina.util.CharsetMapper; import org.apache.catalina.util.ContextName; import org.apache.catalina.util.ExtensionValidator; import org.apache.catalina.util.URLEncoder; import org.apache.catalina.webresources.StandardRoot; import org.apache.juli.logging.Log; import org.apache.juli.logging.LogFactory; import org.apache.naming.ContextBindings; import org.apache.tomcat.InstanceManager; import org.apache.tomcat.InstanceManagerBindings; import org.apache.tomcat.JarScanner; import org.apache.tomcat.util.ExceptionUtils; import org.apache.tomcat.util.IntrospectionUtils; import org.apache.tomcat.util.buf.StringUtils; import org.apache.tomcat.util.buf.UDecoder; import org.apache.tomcat.util.descriptor.XmlIdentifiers; import org.apache.tomcat.util.descriptor.web.ApplicationParameter; import org.apache.tomcat.util.descriptor.web.ErrorPage; import org.apache.tomcat.util.descriptor.web.FilterDef; import org.apache.tomcat.util.descriptor.web.FilterMap; import org.apache.tomcat.util.descriptor.web.Injectable; import org.apache.tomcat.util.descriptor.web.InjectionTarget; import org.apache.tomcat.util.descriptor.web.LoginConfig; import org.apache.tomcat.util.descriptor.web.MessageDestination; import org.apache.tomcat.util.descriptor.web.MessageDestinationRef; import org.apache.tomcat.util.descriptor.web.SecurityCollection; import org.apache.tomcat.util.descriptor.web.SecurityConstraint; import org.apache.tomcat.util.http.CookieProcessor; import org.apache.tomcat.util.http.Rfc6265CookieProcessor; import org.apache.tomcat.util.scan.StandardJarScanner; import org.apache.tomcat.util.security.PrivilegedGetTccl; import org.apache.tomcat.util.security.PrivilegedSetTccl; /** * Standard implementation of the <b>Context</b> interface. Each * child container must be a Wrapper implementation to process the * requests directed to a particular servlet. * * @author Craig R. McClanahan * @author Remy Maucherat */ public class StandardContext extends ContainerBase implements Context, NotificationEmitter { private static final Log log = LogFactory.getLog(StandardContext.class); // ----------------------------------------------------------- Constructors /** * Create a new StandardContext component with the default basic Valve. */ public StandardContext() { super(); pipeline.setBasic(new StandardContextValve()); broadcaster = new NotificationBroadcasterSupport(); // Set defaults if (!Globals.STRICT_SERVLET_COMPLIANCE) { // Strict servlet compliance requires all extension mapped servlets // to be checked against welcome files resourceOnlyServlets.add("jsp"); } } // ----------------------------------------------------- Instance Variables /** * Allow multipart/form-data requests to be parsed even when the * target servlet doesn't specify @MultipartConfig or have a * &lt;multipart-config&gt; element. */ protected boolean allowCasualMultipartParsing = false; /** * Control whether remaining request data will be read * (swallowed) even if the request violates a data size constraint. */ private boolean swallowAbortedUploads = true; /** * The alternate deployment descriptor name. */ private String altDDName = null; /** * Lifecycle provider. */ private InstanceManager instanceManager = null; /** * The antiResourceLocking flag for this Context. */ private boolean antiResourceLocking = false; /** * The set of appl