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/*
* 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.InputStream;
import java.lang.reflect.InvocationTargetException;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.Collections;
import java.util.EnumSet;
import java.util.Enumeration;
import java.util.EventListener;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
import javax.naming.Binding;
import javax.naming.NamingException;
import javax.naming.directory.DirContext;
import javax.servlet.Filter;
import javax.servlet.FilterRegistration;
import javax.servlet.RequestDispatcher;
import javax.servlet.Servlet;
import javax.servlet.ServletContext;
import javax.servlet.ServletContextAttributeEvent;
import javax.servlet.ServletContextAttributeListener;
import javax.servlet.ServletContextListener;
import javax.servlet.ServletException;
import javax.servlet.ServletRegistration;
import javax.servlet.ServletRequestAttributeListener;
import javax.servlet.ServletRequestListener;
import javax.servlet.SessionCookieConfig;
import javax.servlet.SessionTrackingMode;
import javax.servlet.descriptor.JspConfigDescriptor;
import javax.servlet.http.HttpSessionAttributeListener;
import javax.servlet.http.HttpSessionListener;
import org.apache.catalina.Container;
import org.apache.catalina.Context;
import org.apache.catalina.Engine;
import org.apache.catalina.Globals;
import org.apache.catalina.Host;
import org.apache.catalina.LifecycleState;
import org.apache.catalina.Service;
import org.apache.catalina.Wrapper;
import org.apache.catalina.connector.Connector;
import org.apache.catalina.deploy.FilterDef;
import org.apache.catalina.util.Enumerator;
import org.apache.catalina.util.RequestUtil;
import org.apache.catalina.util.ResourceSet;
import org.apache.catalina.util.ServerInfo;
import org.apache.naming.resources.DirContextURLStreamHandler;
import org.apache.naming.resources.Resource;
import org.apache.tomcat.util.ExceptionUtils;
import org.apache.tomcat.util.buf.CharChunk;
import org.apache.tomcat.util.buf.MessageBytes;
import org.apache.tomcat.util.http.mapper.MappingData;
import org.apache.tomcat.util.res.StringManager;
/**
* Standard implementation of ServletContext that represents
* a web application's execution environment. An instance of this class is
* associated with each instance of StandardContext.
*
* @author Craig R. McClanahan
* @author Remy Maucherat
* @version $Id: ApplicationContext.java 1031690 2010-11-05 18:17:56Z markt $
*/
public class ApplicationContext
implements ServletContext {
protected static final boolean STRICT_SERVLET_COMPLIANCE;
protected static final boolean GET_RESOURCE_REQUIRE_SLASH;
static {
STRICT_SERVLET_COMPLIANCE = Globals.STRICT_SERVLET_COMPLIANCE;
String requireSlash = System.getProperty(
"org.apache.catalina.core.ApplicationContext.GET_RESOURCE_REQUIRE_SLASH");
if (requireSlash == null) {
GET_RESOURCE_REQUIRE_SLASH = STRICT_SERVLET_COMPLIANCE;
} else {
GET_RESOURCE_REQUIRE_SLASH =
Boolean.valueOf(requireSlash).booleanValue();
}
}
// ----------------------------------------------------------- Constructors
/**
* Construct a new instance of this class, associated with the specified
* Context instance.
*
* @param context The associated Context instance
*/
public ApplicationContext(StandardContext context) {
super();
this.context = context;
// Populate session tracking modes
populateSessionTrackingModes();
}
// ----------------------------------------------------- Instance Variables
/**
* The context attributes for this context.
*/
protected Map attributes =
new ConcurrentHashMap();
/**
* List of read only attributes for this context.
*/
private Map readOnlyAttributes =
new ConcurrentHashMap();
/**
* The Context instance with which we are associated.
*/
private StandardContext context = null;
/**
* Empty String collection to serve as the basis for empty enumerations.
*/
private static final List emptyString = Collections.emptyList();
/**
* Empty Servlet collection to serve as the basis for empty enumerations.
*/
private static final List emptyServlet = Collections.emptyList();
/**
* The facade around this object.
*/
private ServletContext facade = new ApplicationContextFacade(this);
/**
* The merged context initialization parameters for this Context.
*/
private Map parameters =
new ConcurrentHashMap();
/**
* The string manager for this package.
*/
private static final StringManager sm =
StringManager.getManager(Constants.Package);
/**
* Thread local data used during request dispatch.
*/
private ThreadLocal dispatchData =
new ThreadLocal();
/**
* Session Cookie config
*/
private SessionCookieConfig sessionCookieConfig =
new ApplicationSessionCookieConfig();
/**
* Session tracking modes
*/
private Set sessionTrackingModes = null;
private Set defaultSessionTrackingModes = null;
private Set supportedSessionTrackingModes = null;
/**
* Flag that indicates if a new {@link ServletContextListener} may be added
* to the application. Once the first {@link ServletContextListener} is
* called, no more may be added.
*/
private boolean newServletContextListenerAllowed = true;
// --------------------------------------------------------- Public Methods
/**
* Return the resources object that is mapped to a specified path.
* The path must begin with a "/" and is interpreted as relative to the
* current context root.
*/
public DirContext getResources() {
return context.getResources();
}
// ------------------------------------------------- ServletContext Methods
/**
* Return the value of the specified context attribute, if any;
* otherwise return null.
*
* @param name Name of the context attribute to return
*/
@Override
public Object getAttribute(String name) {
return (attributes.get(name));
}
/**
* Return an enumeration of the names of the context attributes
* associated with this context.
*/
@Override
public Enumeration getAttributeNames() {
return new Enumerator(attributes.keySet(), true);
}
/**
* Return a ServletContext object that corresponds to a
* specified URI on the server. This method allows servlets to gain
* access to the context for various parts of the server, and as needed
* obtain RequestDispatcher objects or resources from the
* context. The given path must be absolute (beginning with a "/"),
* and is interpreted based on our virtual host's document root.
*
* @param uri Absolute URI of a resource on the server
*/
@Override
public ServletContext getContext(String uri) {
// Validate the format of the specified argument
if ((uri == null) || (!uri.startsWith("/")))
return (null);
Context child = null;
try {
Host host = (Host) context.getParent();
String mapuri = uri;
while (true) {
child = (Context) host.findChild(mapuri);
if (child != null)
break;
int slash = mapuri.lastIndexOf('/');
if (slash < 0)
break;
mapuri = mapuri.substring(0, slash);
}
} catch (Throwable t) {
ExceptionUtils.handleThrowable(t);
return (null);
}
if (child == null)
return (null);
if (context.getCrossContext()) {
// If crossContext is enabled, can always return the context
return child.getServletContext();
} else if (child == context) {
// Can still return the current context
return context.getServletContext();
} else {
// Nothing to return
return (null);
}
}
/**
* Return the main path associated with this context.
*/
@Override
public String getContextPath() {
return context.getPath();
}
/**
* Return the value of the specified initialization parameter, or
* null if this parameter does not exist.
*
* @param name Name of the initialization parameter to retrieve
*/
@Override
public String getInitParameter(final String name) {
return parameters.get(name);
}
/**
* Return the names of the context's initialization parameters, or an
* empty enumeration if the context has no initialization parameters.
*/
@Override
public Enumeration getInitParameterNames() {
return (new Enumerator(parameters.keySet()));
}
/**
* Return the major version of the Java Servlet API that we implement.
*/
@Override
public int getMajorVersion() {
return (Constants.MAJOR_VERSION);
}
/**
* Return the minor version of the Java Servlet API that we implement.
*/
@Override
public int getMinorVersion() {
return (Constants.MINOR_VERSION);
}
/**
* Return the MIME type of the specified file, or null if
* the MIME type cannot be determined.
*
* @param file Filename for which to identify a MIME type
*/
@Override
public String getMimeType(String file) {
if (file == null)
return (null);
int period = file.lastIndexOf(".");
if (period < 0)
return (null);
String extension = file.substring(period + 1);
if (extension.length() < 1)
return (null);
return (context.findMimeMapping(extension));
}
/**
* Return a RequestDispatcher object that acts as a
* wrapper for the named servlet.
*
* @param name Name of the servlet for which a dispatcher is requested
*/
@Override
public RequestDispatcher getNamedDispatcher(String name) {
// Validate the name argument
if (name == null)
return (null);
// Create and return a corresponding request dispatcher
Wrapper wrapper = (Wrapper) context.findChild(name);
if (wrapper == null)
return (null);
return new ApplicationDispatcher(wrapper, null, null, null, null, name);
}
/**
* Return the real path for a given virtual path, if possible; otherwise
* return null.
*
* @param path The path to the desired resource
*/
@Override
public String getRealPath(String path) {
return context.getRealPath(path);
}
/**
* Return a RequestDispatcher instance that acts as a
* wrapper for the resource at the given path. The path must begin
* with a "/" and is interpreted as relative to the current context root.
*
* @param path The path to the desired resource.
*/
@Override
public RequestDispatcher getRequestDispatcher(String path) {
// Validate the path argument
if (path == null)
return (null);
if (!path.startsWith("/"))
throw new IllegalArgumentException
(sm.getString
("applicationContext.requestDispatcher.iae", path));
// Get query string
String queryString = null;
String normalizedPath = path;
int pos = normalizedPath.indexOf('?');
if (pos >= 0) {
queryString = normalizedPath.substring(pos + 1);
normalizedPath = normalizedPath.substring(0, pos);
}
normalizedPath = RequestUtil.normalize(normalizedPath);
if (normalizedPath == null)
return (null);
pos = normalizedPath.length();
// Use the thread local URI and mapping data
DispatchData dd = dispatchData.get();
if (dd == null) {
dd = new DispatchData();
dispatchData.set(dd);
}
MessageBytes uriMB = dd.uriMB;
uriMB.recycle();
// Use the thread local mapping data
MappingData mappingData = dd.mappingData;
// Map the URI
CharChunk uriCC = uriMB.getCharChunk();
try {
uriCC.append(context.getPath(), 0, context.getPath().length());
/*
* Ignore any trailing path params (separated by ';') for mapping
* purposes
*/
int semicolon = normalizedPath.indexOf(';');
if (pos >= 0 && semicolon > pos) {
semicolon = -1;
}
uriCC.append(normalizedPath, 0, semicolon > 0 ? semicolon : pos);
context.getMapper().map(uriMB, mappingData);
if (mappingData.wrapper == null) {
return (null);
}
/*
* Append any trailing path params (separated by ';') that were
* ignored for mapping purposes, so that they're reflected in the
* RequestDispatcher's requestURI
*/
if (semicolon > 0) {
uriCC.append(normalizedPath, semicolon, pos - semicolon);
}
} catch (Exception e) {
// Should never happen
log(sm.getString("applicationContext.mapping.error"), e);
return (null);
}
Wrapper wrapper = (Wrapper) mappingData.wrapper;
String wrapperPath = mappingData.wrapperPath.toString();
String pathInfo = mappingData.pathInfo.toString();
mappingData.recycle();
// Construct a RequestDispatcher to process this request
return new ApplicationDispatcher
(wrapper, uriCC.toString(), wrapperPath, pathInfo,
queryString, null);
}
/**
* Return the URL to the resource that is mapped to a specified path.
* The path must begin with a "/" and is interpreted as relative to the
* current context root.
*
* @param path The path to the desired resource
*
* @exception MalformedURLException if the path is not given
* in the correct form
*/
@Override
public URL getResource(String path)
throws MalformedURLException {
if (path == null)
throw new MalformedURLException(sm.getString("applicationContext.requestDispatcher.iae", path));
if (!path.startsWith("/") && GET_RESOURCE_REQUIRE_SLASH)
throw new MalformedURLException(sm.getString("applicationContext.requestDispatcher.iae", path));
String normPath = RequestUtil.normalize(path);
if (normPath == null)
return (null);
DirContext resources = context.getResources();
if (resources != null) {
String fullPath = context.getPath() + normPath;
String hostName = context.getParent().getName();
try {
resources.lookup(path);
return new URL
("jndi", "", 0, getJNDIUri(hostName, fullPath),
new DirContextURLStreamHandler(resources));
} catch (NamingException e) {
// Ignore
} catch (Exception e) {
// Unexpected
log(sm.getString("applicationContext.lookup.error", path,
getContextPath()), e);
}
}
return (null);
}
/**
* Return the requested resource as an InputStream. The
* path must be specified according to the rules described under
* getResource. If no such resource can be identified,
* return null.
*
* @param path The path to the desired resource.
*/
@Override
public InputStream getResourceAsStream(String path) {
if (path == null)
return (null);
if (!path.startsWith("/") && GET_RESOURCE_REQUIRE_SLASH)
return null;
String normalizedPath = RequestUtil.normalize(path);
if (normalizedPath == null)
return (null);
DirContext resources = context.getResources();
if (resources != null) {
try {
Object resource = resources.lookup(normalizedPath);
if (resource instanceof Resource)
return (((Resource) resource).streamContent());
} catch (NamingException e) {
// Ignore
} catch (Exception e) {
// Unexpected
log(sm.getString("applicationContext.lookup.error", path,
getContextPath()), e);
}
}
return (null);
}
/**
* Return a Set containing the resource paths of resources member of the
* specified collection. Each path will be a String starting with
* a "/" character. The returned set is immutable.
*
* @param path Collection path
*/
@Override
public Set getResourcePaths(String path) {
// Validate the path argument
if (path == null) {
return null;
}
if (!path.startsWith("/")) {
throw new IllegalArgumentException
(sm.getString("applicationContext.resourcePaths.iae", path));
}
String normalizedPath = RequestUtil.normalize(path);
if (normalizedPath == null)
return (null);
DirContext resources = context.getResources();
if (resources != null) {
return (getResourcePathsInternal(resources, normalizedPath));
}
return (null);
}
/**
* Internal implementation of getResourcesPath() logic.
*
* @param resources Directory context to search
* @param path Collection path
*/
private Set getResourcePathsInternal(DirContext resources,
String path) {
ResourceSet set = new ResourceSet();
try {
listCollectionPaths(set, resources, path);
} catch (NamingException e) {
return (null);
}
set.setLocked(true);
return (set);
}
/**
* Return the name and version of the servlet container.
*/
@Override
public String getServerInfo() {
return (ServerInfo.getServerInfo());
}
/**
* @deprecated As of Java Servlet API 2.1, with no direct replacement.
*/
@Override
@Deprecated
public Servlet getServlet(String name) {
return (null);
}
/**
* Return the display name of this web application.
*/
@Override
public String getServletContextName() {
return (context.getDisplayName());
}
/**
* @deprecated As of Java Servlet API 2.1, with no direct replacement.
*/
@Override
@Deprecated
public Enumeration getServletNames() {
return (new Enumerator(emptyString));
}
/**
* @deprecated As of Java Servlet API 2.1, with no direct replacement.
*/
@Override
@Deprecated
public Enumeration getServlets() {
return (new Enumerator(emptyServlet));
}
/**
* Writes the specified message to a servlet log file.
*
* @param message Message to be written
*/
@Override
public void log(String message) {
context.getLogger().info(message);
}
/**
* Writes the specified exception and message to a servlet log file.
*
* @param exception Exception to be reported
* @param message Message to be written
*
* @deprecated As of Java Servlet API 2.1, use
* log(String, Throwable) instead
*/
@Override
@Deprecated
public void log(Exception exception, String message) {
context.getLogger().error(message, exception);
}
/**
* Writes the specified message and exception to a servlet log file.
*
* @param message Message to be written
* @param throwable Exception to be reported
*/
@Override
public void log(String message, Throwable throwable) {
context.getLogger().error(message, throwable);
}
/**
* Remove the context attribute with the specified name, if any.
*
* @param name Name of the context attribute to be removed
*/
@Override
public void removeAttribute(String name) {
Object value = null;
boolean found = false;
// Remove the specified attribute
// Check for read only attribute
if (readOnlyAttributes.containsKey(name))
return;
found = attributes.containsKey(name);
if (found) {
value = attributes.get(name);
attributes.remove(name);
} else {
return;
}
// Notify interested application event listeners
Object listeners[] = context.getApplicationEventListeners();
if ((listeners == null) || (listeners.length == 0))
return;
ServletContextAttributeEvent event =
new ServletContextAttributeEvent(context.getServletContext(),
name, value);
for (int i = 0; i < listeners.length; i++) {
if (!(listeners[i] instanceof ServletContextAttributeListener))
continue;
ServletContextAttributeListener listener =
(ServletContextAttributeListener) listeners[i];
try {
context.fireContainerEvent("beforeContextAttributeRemoved",
listener);
listener.attributeRemoved(event);
context.fireContainerEvent("afterContextAttributeRemoved",
listener);
} catch (Throwable t) {
ExceptionUtils.handleThrowable(t);
context.fireContainerEvent("afterContextAttributeRemoved",
listener);
// FIXME - should we do anything besides log these?
log(sm.getString("applicationContext.attributeEvent"), t);
}
}
}
/**
* Bind the specified value with the specified context attribute name,
* replacing any existing value for that name.
*
* @param name Attribute name to be bound
* @param value New attribute value to be bound
*/
@Override
public void setAttribute(String name, Object value) {
// Name cannot be null
if (name == null)
throw new IllegalArgumentException
(sm.getString("applicationContext.setAttribute.namenull"));
// Null value is the same as removeAttribute()
if (value == null) {
removeAttribute(name);
return;
}
Object oldValue = null;
boolean replaced = false;
// Add or replace the specified attribute
// Check for read only attribute
if (readOnlyAttributes.containsKey(name))
return;
oldValue = attributes.get(name);
if (oldValue != null)
replaced = true;
attributes.put(name, value);
// Notify interested application event listeners
Object listeners[] = context.getApplicationEventListeners();
if ((listeners == null) || (listeners.length == 0))
return;
ServletContextAttributeEvent event = null;
if (replaced)
event =
new ServletContextAttributeEvent(context.getServletContext(),
name, oldValue);
else
event =
new ServletContextAttributeEvent(context.getServletContext(),
name, value);
for (int i = 0; i < listeners.length; i++) {
if (!(listeners[i] instanceof ServletContextAttributeListener))
continue;
ServletContextAttributeListener listener =
(ServletContextAttributeListener) listeners[i];
try {
if (replaced) {
context.fireContainerEvent
("beforeContextAttributeReplaced", listener);
listener.attributeReplaced(event);
context.fireContainerEvent("afterContextAttributeReplaced",
listener);
} else {
context.fireContainerEvent("beforeContextAttributeAdded",
listener);
listener.attributeAdded(event);
context.fireContainerEvent("afterContextAttributeAdded",
listener);
}
} catch (Throwable t) {
ExceptionUtils.handleThrowable(t);
if (replaced)
context.fireContainerEvent("afterContextAttributeReplaced",
listener);
else
context.fireContainerEvent("afterContextAttributeAdded",
listener);
// FIXME - should we do anything besides log these?
log(sm.getString("applicationContext.attributeEvent"), t);
}
}
}
/**
* Add filter to context.
* @param filterName Name of filter to add
* @param filterClass Name of filter class
* @return null if the filter has already been fully defined,
* else a {@link javax.servlet.FilterRegistration.Dynamic} object
* that can be used to further configure the filter
* @throws IllegalStateException if the context has already been initialised
* @throws UnsupportedOperationException - if this context was passed to the
* {@link ServletContextListener#contextInitialized(javax.servlet.ServletContextEvent)}
* method of a {@link ServletContextListener} that was not declared
* in web.xml, a web-fragment or annotated with
* {@link javax.servlet.annotation.WebListener}.
*/
@Override
public FilterRegistration.Dynamic addFilter(String filterName,
String filterClass) throws IllegalStateException {
return addFilter(filterName, filterClass, null);
}
/**
* Add filter to context.
* @param filterName Name of filter to add
* @param filter Filter to add
* @return null if the filter has already been fully defined,
* else a {@link javax.servlet.FilterRegistration.Dynamic} object
* that can be used to further configure the filter
* @throws IllegalStateException if the context has already been initialised
* @throws UnsupportedOperationException - if this context was passed to the
* {@link ServletContextListener#contextInitialized(javax.servlet.ServletContextEvent)}
* method of a {@link ServletContextListener} that was not declared
* in web.xml, a web-fragment or annotated with
* {@link javax.servlet.annotation.WebListener}.
*/
@Override
public FilterRegistration.Dynamic addFilter(String filterName,
Filter filter) throws IllegalStateException {
return addFilter(filterName, null, filter);
}
/**
* Add filter to context.
* @param filterName Name of filter to add
* @param filterClass Class of filter to add
* @return null if the filter has already been fully defined,
* else a {@link javax.servlet.FilterRegistration.Dynamic} object
* that can be used to further configure the filter
* @throws IllegalStateException if the context has already been initialised
* @throws UnsupportedOperationException - if this context was passed to the
* {@link ServletContextListener#contextInitialized(javax.servlet.ServletContextEvent)}
* method of a {@link ServletContextListener} that was not declared
* in web.xml, a web-fragment or annotated with
* {@link javax.servlet.annotation.WebListener}.
*/
@Override
public FilterRegistration.Dynamic addFilter(String filterName,
Class filterClass) throws IllegalStateException {
return addFilter(filterName, filterClass.getName(), null);
}
private FilterRegistration.Dynamic addFilter(String filterName,
String filterClass, Filter filter) throws IllegalStateException {
if (!context.getState().equals(LifecycleState.STARTING_PREP)) {
//TODO Spec breaking enhancement to ignore this restriction
throw new IllegalStateException(
sm.getString("applicationContext.addFilter.ise",
getContextPath()));
}
// TODO SERVLET3
// throw UnsupportedOperationException - if this context was passed to the
// {@link ServletContextListener#contextInitialized(javax.servlet.ServletContextEvent)}
// method of a {@link ServletContextListener} that was not declared
// in web.xml, a web-fragment or annotated with
// {@link javax.servlet.annotation.WebListener}.
FilterDef filterDef = context.findFilterDef(filterName);
// Assume a 'complete' FilterRegistration is one that has a class and
// a name
if (filterDef == null) {
filterDef = new FilterDef();
filterDef.setFilterName(filterName);
context.addFilterDef(filterDef);
} else {
if (filterDef.getFilterName() != null &&
filterDef.getFilterClass() != null) {
return null;
}
}
if (filter == null) {
filterDef.setFilterClass(filterClass);
} else {
filterDef.setFilterClass(filter.getClass().getName());
filterDef.setFilter(filter);
}
return new ApplicationFilterRegistration(filterDef, context);
}
@Override
public T createFilter(Class c)
throws ServletException {
try {
@SuppressWarnings("unchecked")
T filter = (T) context.getInstanceManager().newInstance(c.getName());
return filter;
} catch (IllegalAccessException e) {
throw new ServletException(e);
} catch (InvocationTargetException e) {
throw new ServletException(e);
} catch (NamingException e) {
throw new ServletException(e);
} catch (InstantiationException e) {
throw new ServletException(e);
} catch (ClassNotFoundException e) {
throw new ServletException(e);
}
}
@Override
public FilterRegistration getFilterRegistration(String filterName) {
FilterDef filterDef = context.findFilterDef(filterName);
if (filterDef == null) {
return null;
}
return new ApplicationFilterRegistration(filterDef, context);
}
/**
* Add servlet to context.
* @param servletName Name of servlet to add
* @param servletClass Name of servlet class
* @return null if the servlet has already been fully defined,
* else a {@link javax.servlet.ServletRegistration.Dynamic} object
* that can be used to further configure the servlet
* @throws IllegalStateException if the context has already been initialised
* @throws UnsupportedOperationException - if this context was passed to the
* {@link ServletContextListener#contextInitialized(javax.servlet.ServletContextEvent)}
* method of a {@link ServletContextListener} that was not declared
* in web.xml, a web-fragment or annotated with
* {@link javax.servlet.annotation.WebListener}.
*/
@Override
public ServletRegistration.Dynamic addServlet(String servletName,
String servletClass) throws IllegalStateException {
return addServlet(servletName, servletClass, null);
}
/**
* Add servlet to context.
* @param servletName Name of servlet to add
* @param servlet Servlet instance to add
* @return null if the servlet has already been fully defined,
* else a {@link javax.servlet.ServletRegistration.Dynamic} object
* that can be used to further configure the servlet
* @throws IllegalStateException if the context has already been initialised
* @throws UnsupportedOperationException - if this context was passed to the
* {@link ServletContextListener#contextInitialized(javax.servlet.ServletContextEvent)}
* method of a {@link ServletContextListener} that was not declared
* in web.xml, a web-fragment or annotated with
* {@link javax.servlet.annotation.WebListener}.
*/
@Override
public ServletRegistration.Dynamic addServlet(String servletName,
Servlet servlet) throws IllegalStateException {
return addServlet(servletName, null, servlet);
}
/**
* Add servlet to context.
* @param servletName Name of servlet to add
* @param servletClass Class of servlet to add
* @return null if the servlet has already been fully defined,
* else a {@link javax.servlet.ServletRegistration.Dynamic} object
* that can be used to further configure the servlet
* @throws IllegalStateException if the context has already been initialised
* @throws UnsupportedOperationException - if this context was passed to the
* {@link ServletContextListener#contextInitialized(javax.servlet.ServletContextEvent)}
* method of a {@link ServletContextListener} that was not declared
* in web.xml, a web-fragment or annotated with
* {@link javax.servlet.annotation.WebListener}.
*/
@Override
public ServletRegistration.Dynamic addServlet(String servletName,
Class servletClass)
throws IllegalStateException {
return addServlet(servletName, servletClass.getName(), null);
}
private ServletRegistration.Dynamic addServlet(String servletName,
String servletClass, Servlet servlet) throws IllegalStateException {
if (!context.getState().equals(LifecycleState.STARTING_PREP)) {
//TODO Spec breaking enhancement to ignore this restriction
throw new IllegalStateException(
sm.getString("applicationContext.addServlet.ise",
getContextPath()));
}
// TODO SERVLET3
// throw UnsupportedOperationException - if this context was passed to the
// {@link ServletContextListener#contextInitialized(javax.servlet.ServletContextEvent)}
// method of a {@link ServletContextListener} that was not declared
// in web.xml, a web-fragment or annotated with
// {@link javax.servlet.annotation.WebListener}.
Wrapper wrapper = (Wrapper) context.findChild(servletName);
// Assume a 'complete' FilterRegistration is one that has a class and
// a name
if (wrapper == null) {
wrapper = context.createWrapper();
wrapper.setName(servletName);
context.addChild(wrapper);
} else {
if (wrapper.getName() != null &&
wrapper.getServletClass() != null) {
return null;
}
}
if (servlet == null) {
wrapper.setServletClass(servletClass);
} else {
wrapper.setServletClass(servlet.getClass().getName());
wrapper.setServlet(servlet);
}
return context.dynamicServletAdded(wrapper);
}
@Override
public T createServlet(Class c)
throws ServletException {
try {
@SuppressWarnings("unchecked")
T servlet = (T) context.getInstanceManager().newInstance(c.getName());
context.dynamicServletCreated(servlet);
return servlet;
} catch (IllegalAccessException e) {
throw new ServletException(e);
} catch (InvocationTargetException e) {
throw new ServletException(e);
} catch (NamingException e) {
throw new ServletException(e);
} catch (InstantiationException e) {
throw new ServletException(e);
} catch (ClassNotFoundException e) {
throw new ServletException(e);
}
}
@Override
public ServletRegistration getServletRegistration(String servletName) {
Wrapper wrapper = (Wrapper) context.findChild(servletName);
if (wrapper == null) {
return null;
}
return new ApplicationServletRegistration(wrapper, context);
}
/**
* By default {@link SessionTrackingMode#URL} is always supported, {@link
* SessionTrackingMode#COOKIE} is supported unless the cookies
* attribute has been set to false for the context and {@link
* SessionTrackingMode#SSL} is supported if at least one of the connectors
* used by this context has the attribute secure set to
* true.
*/
@Override
public Set getDefaultSessionTrackingModes() {
return defaultSessionTrackingModes;
}
private void populateSessionTrackingModes() {
// URL re-writing is always enabled by default
defaultSessionTrackingModes = EnumSet.of(SessionTrackingMode.URL);
supportedSessionTrackingModes = EnumSet.of(SessionTrackingMode.URL);
if (context.getCookies()) {
defaultSessionTrackingModes.add(SessionTrackingMode.COOKIE);
supportedSessionTrackingModes.add(SessionTrackingMode.COOKIE);
}
// SSL not enabled by default as it can only used on its own
// Context > Host > Engine > Service
Service s = ((Engine) context.getParent().getParent()).getService();
Connector[] connectors = s.findConnectors();
// Need at least one SSL enabled connector to use the SSL session ID.
for (Connector connector : connectors) {
if (Boolean.TRUE.equals(connector.getAttribute("SSLEnabled"))) {
supportedSessionTrackingModes.add(SessionTrackingMode.SSL);
break;
}
}
}
/**
* Return the supplied value if one was previously set, else return the
* defaults.
*/
@Override
public Set getEffectiveSessionTrackingModes() {
if (sessionTrackingModes != null) {
return sessionTrackingModes;
}
return defaultSessionTrackingModes;
}
@Override
public SessionCookieConfig getSessionCookieConfig() {
return sessionCookieConfig;
}
/**
* @throws IllegalStateException if the context has already been initialised
* @throws IllegalArgumentException If SSL is requested in combination with
* anything else or if an unsupported
* tracking mode is requested
*/
@Override
public void setSessionTrackingModes(
Set sessionTrackingModes) {
if (!context.getState().equals(LifecycleState.STARTING_PREP)) {
throw new IllegalStateException(
sm.getString("applicationContext.setSessionTracking.ise",
getContextPath()));
}
// Check that only supported tracking modes have been requested
for (SessionTrackingMode sessionTrackingMode : sessionTrackingModes) {
if (!supportedSessionTrackingModes.contains(sessionTrackingMode)) {
throw new IllegalArgumentException(sm.getString(
"applicationContext.setSessionTracking.iae.invalid",
sessionTrackingMode.toString(), getContextPath()));
}
}
// Check SSL has not be configured with anything else
if (sessionTrackingModes.contains(SessionTrackingMode.SSL)) {
if (sessionTrackingModes.size() > 1) {
throw new IllegalArgumentException(sm.getString(
"applicationContext.setSessionTracking.iae.ssl",
getContextPath()));
}
}
this.sessionTrackingModes = sessionTrackingModes;
}
@Override
public boolean setInitParameter(String name, String value) {
if (parameters.containsKey(name)) {
return false;
}
parameters.put(name, value);
return true;
}
@Override
public void addListener(Class listenerClass) {
EventListener listener;
try {
listener = createListener(listenerClass);
} catch (ServletException e) {
throw new IllegalArgumentException(sm.getString(
"applicationContext.addListener.iae.init",
listenerClass.getName()), e);
}
addListener(listener);
}
@Override
public void addListener(String className) {
try {
Object obj = context.getInstanceManager().newInstance(className);
if (!(obj instanceof EventListener)) {
throw new IllegalArgumentException(sm.getString(
"applicationContext.addListener.iae.wrongType",
className));
}
EventListener listener = (EventListener) obj;
addListener(listener);
} catch (IllegalAccessException e) {
throw new IllegalArgumentException(sm.getString(
"applicationContext.addListener.iae.cnfe", className),
e);
} catch (InvocationTargetException e) {
throw new IllegalArgumentException(sm.getString(
"applicationContext.addListener.iae.cnfe", className),
e);
} catch (NamingException e) {
throw new IllegalArgumentException(sm.getString(
"applicationContext.addListener.iae.cnfe", className),
e);
} catch (InstantiationException e) {
throw new IllegalArgumentException(sm.getString(
"applicationContext.addListener.iae.cnfe", className),
e);
} catch (ClassNotFoundException e) {
throw new IllegalArgumentException(sm.getString(
"applicationContext.addListener.iae.cnfe", className),
e);
}
}
@Override
public void addListener(T t) {
if (!context.getState().equals(LifecycleState.STARTING_PREP)) {
throw new IllegalStateException(
sm.getString("applicationContext.addListener.ise",
getContextPath()));
}
// TODO SERVLET3
// throw UnsupportedOperationException - if this context was passed to the
// {@link ServletContextListener#contextInitialized(javax.servlet.ServletContextEvent)}
// method of a {@link ServletContextListener} that was not declared
// in web.xml, a web-fragment or annotated with
// {@link javax.servlet.annotation.WebListener}.
boolean match = false;
if (t instanceof ServletContextAttributeListener ||
t instanceof ServletRequestListener ||
t instanceof ServletRequestAttributeListener ||
t instanceof HttpSessionAttributeListener) {
context.addApplicationEventListener(t);
match = true;
}
if (t instanceof HttpSessionListener
|| (t instanceof ServletContextListener &&
newServletContextListenerAllowed)) {
context.addApplicationLifecycleListener(t);
match = true;
}
if (match) return;
if (t instanceof ServletContextListener) {
throw new IllegalArgumentException(sm.getString(
"applicationContext.addListener.iae.sclNotAllowed",
t.getClass().getName()));
} else {
throw new IllegalArgumentException(sm.getString(
"applicationContext.addListener.iae.wrongType",
t.getClass().getName()));
}
}
@Override
public T createListener(Class c)
throws ServletException {
try {
@SuppressWarnings("unchecked")
T listener =
(T) context.getInstanceManager().newInstance(c.getName());
if (listener instanceof ServletContextListener ||
listener instanceof ServletContextAttributeListener ||
listener instanceof ServletRequestListener ||
listener instanceof ServletRequestAttributeListener ||
listener instanceof HttpSessionListener ||
listener instanceof HttpSessionAttributeListener) {
return listener;
}
throw new IllegalArgumentException(sm.getString(
"applicationContext.addListener.iae.wrongType",
listener.getClass().getName()));
} catch (IllegalAccessException e) {
throw new ServletException(e);
} catch (InvocationTargetException e) {
throw new ServletException(e);
} catch (NamingException e) {
throw new ServletException(e);
} catch (InstantiationException e) {
throw new ServletException(e);
} catch (ClassNotFoundException e) {
throw new ServletException(e);
} }
@Override
public void declareRoles(String... roleNames) {
if (!context.getState().equals(LifecycleState.STARTING_PREP)) {
//TODO Spec breaking enhancement to ignore this restriction
throw new IllegalStateException(
sm.getString("applicationContext.addRole.ise",
getContextPath()));
}
if (roleNames == null) {
throw new IllegalArgumentException(
sm.getString("applicationContext.roles.iae",
getContextPath()));
}
for (String role : roleNames) {
if (role == null || "".equals(role)) {
throw new IllegalArgumentException(
sm.getString("applicationContext.role.iae",
getContextPath()));
}
context.addSecurityRole(role);
}
}
@Override
public ClassLoader getClassLoader() {
ClassLoader result = context.getLoader().getClassLoader();
if (Globals.IS_SECURITY_ENABLED) {
ClassLoader tccl = Thread.currentThread().getContextClassLoader();
ClassLoader parent = result;
while (parent != null) {
if (parent == tccl) {
break;
}
parent = parent.getParent();
}
if (parent == null) {
System.getSecurityManager().checkPermission(
new RuntimePermission("getClassLoader"));
}
}
return result;
}
@Override
public int getEffectiveMajorVersion() {
return context.getEffectiveMajorVersion();
}
@Override
public int getEffectiveMinorVersion() {
return context.getEffectiveMinorVersion();
}
@Override
public Map getFilterRegistrations() {
Map result =
new HashMap();
FilterDef[] filterDefs = context.findFilterDefs();
for (FilterDef filterDef : filterDefs) {
result.put(filterDef.getFilterName(),
new ApplicationFilterRegistration(filterDef, context));
}
return result;
}
@Override
public JspConfigDescriptor getJspConfigDescriptor() {
return context.getJspConfigDescriptor();
}
@Override
public Map getServletRegistrations() {
Map result =
new HashMap();
Container[] wrappers = context.findChildren();
for (Container wrapper : wrappers) {
result.put(((Wrapper) wrapper).getName(),
new ApplicationServletRegistration(
(Wrapper) wrapper, context));
}
return result;
}
// -------------------------------------------------------- Package Methods
protected StandardContext getContext() {
return this.context;
}
protected Map getReadonlyAttributes() {
return this.readOnlyAttributes;
}
/**
* Clear all application-created attributes.
*/
protected void clearAttributes() {
// Create list of attributes to be removed
ArrayList list = new ArrayList();
Iterator iter = attributes.keySet().iterator();
while (iter.hasNext()) {
list.add(iter.next());
}
// Remove application originated attributes
// (read only attributes will be left in place)
Iterator keys = list.iterator();
while (keys.hasNext()) {
String key = keys.next();
removeAttribute(key);
}
}
/**
* Return the facade associated with this ApplicationContext.
*/
protected ServletContext getFacade() {
return (this.facade);
}
/**
* Set an attribute as read only.
*/
void setAttributeReadOnly(String name) {
if (attributes.containsKey(name))
readOnlyAttributes.put(name, name);
}
protected void setNewServletContextListenerAllowed(boolean allowed) {
this.newServletContextListenerAllowed = allowed;
}
/**
* List resource paths (recursively), and store all of them in the given
* Set.
*/
private static void listCollectionPaths(Set set,
DirContext resources, String path) throws NamingException {
Enumeration childPaths = resources.listBindings(path);
while (childPaths.hasMoreElements()) {
Binding binding = childPaths.nextElement();
String name = binding.getName();
StringBuilder childPath = new StringBuilder(path);
if (!"/".equals(path) && !path.endsWith("/"))
childPath.append("/");
childPath.append(name);
Object object = binding.getObject();
if (object instanceof DirContext) {
childPath.append("/");
}
set.add(childPath.toString());
}
}
/**
* Get full path, based on the host name and the context path.
*/
private static String getJNDIUri(String hostName, String path) {
String result;
if (path.startsWith("/")) {
result = "/" + hostName + path;
} else {
result = "/" + hostName + "/" + path;
}
return result;
}
/**
* Internal class used as thread-local storage when doing path
* mapping during dispatch.
*/
private static final class DispatchData {
public MessageBytes uriMB;
public MappingData mappingData;
public DispatchData() {
uriMB = MessageBytes.newInstance();
CharChunk uriCC = uriMB.getCharChunk();
uriCC.setLimit(-1);
mappingData = new MappingData();
}
}
}
