| /* |
| * 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.jasper.servlet; |
| |
| import java.io.IOException; |
| import java.util.Set; |
| |
| import javax.servlet.ServletContainerInitializer; |
| import javax.servlet.ServletContext; |
| import javax.servlet.ServletException; |
| import javax.servlet.jsp.JspFactory; |
| |
| import org.apache.jasper.Constants; |
| import org.apache.jasper.compiler.Localizer; |
| import org.apache.jasper.compiler.TldCache; |
| import org.apache.jasper.runtime.JspFactoryImpl; |
| import org.apache.jasper.security.SecurityClassLoad; |
| import org.apache.juli.logging.Log; |
| import org.apache.juli.logging.LogFactory; |
| import org.apache.tomcat.InstanceManager; |
| import org.apache.tomcat.SimpleInstanceManager; |
| import org.xml.sax.SAXException; |
| |
| /** |
| * Initializer for the Jasper JSP Engine. |
| */ |
| public class JasperInitializer implements ServletContainerInitializer { |
| |
| private static final String MSG = "org.apache.jasper.servlet.JasperInitializer"; |
| private static final Log log = LogFactory.getLog(JasperInitializer.class); |
| |
| /** |
| * Preload classes required at runtime by a JSP servlet so that |
| * we don't get a defineClassInPackage security exception. |
| */ |
| static { |
| JspFactoryImpl factory = new JspFactoryImpl(); |
| SecurityClassLoad.securityClassLoad(factory.getClass().getClassLoader()); |
| if( System.getSecurityManager() != null ) { |
| String basePackage = "org.apache.jasper."; |
| try { |
| factory.getClass().getClassLoader().loadClass( basePackage + |
| "runtime.JspFactoryImpl$PrivilegedGetPageContext"); |
| factory.getClass().getClassLoader().loadClass( basePackage + |
| "runtime.JspFactoryImpl$PrivilegedReleasePageContext"); |
| factory.getClass().getClassLoader().loadClass( basePackage + |
| "runtime.JspRuntimeLibrary"); |
| factory.getClass().getClassLoader().loadClass( basePackage + |
| "runtime.ServletResponseWrapperInclude"); |
| factory.getClass().getClassLoader().loadClass( basePackage + |
| "servlet.JspServletWrapper"); |
| } catch (ClassNotFoundException ex) { |
| throw new IllegalStateException(ex); |
| } |
| } |
| |
| if (JspFactory.getDefaultFactory() == null) { |
| JspFactory.setDefaultFactory(factory); |
| } |
| } |
| |
| @Override |
| public void onStartup(Set<Class<?>> types, ServletContext context) throws ServletException { |
| if (log.isDebugEnabled()) { |
| log.debug(Localizer.getMessage(MSG + ".onStartup", context.getServletContextName())); |
| } |
| |
| // Setup a simple default Instance Manager |
| if (context.getAttribute(InstanceManager.class.getName())==null) { |
| context.setAttribute(InstanceManager.class.getName(), new SimpleInstanceManager()); |
| } |
| |
| boolean validate = Boolean.parseBoolean( |
| context.getInitParameter(Constants.XML_VALIDATION_TLD_INIT_PARAM)); |
| String blockExternalString = context.getInitParameter( |
| Constants.XML_BLOCK_EXTERNAL_INIT_PARAM); |
| boolean blockExternal; |
| if (blockExternalString == null) { |
| blockExternal = true; |
| } else { |
| blockExternal = Boolean.parseBoolean(blockExternalString); |
| } |
| |
| // scan the application for TLDs |
| TldScanner scanner = newTldScanner(context, true, validate, blockExternal); |
| try { |
| scanner.scan(); |
| } catch (IOException | SAXException e) { |
| throw new ServletException(e); |
| } |
| |
| // add any listeners defined in TLDs |
| for (String listener : scanner.getListeners()) { |
| context.addListener(listener); |
| } |
| |
| context.setAttribute(TldCache.SERVLET_CONTEXT_ATTRIBUTE_NAME, |
| new TldCache(context, scanner.getUriTldResourcePathMap(), |
| scanner.getTldResourcePathTaglibXmlMap())); |
| } |
| |
| protected TldScanner newTldScanner(ServletContext context, boolean namespaceAware, |
| boolean validate, boolean blockExternal) { |
| return new TldScanner(context, namespaceAware, validate, blockExternal); |
| } |
| } |