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org.mortbay.jetty.handler.ContextHandler Maven / Gradle / Ivy
//========================================================================
//$Id: ContextHandler.java,v 1.16 2005/11/17 11:19:45 gregwilkins Exp $
//Copyright 2004-2005 Mort Bay Consulting Pty. Ltd.
//------------------------------------------------------------------------
//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 org.mortbay.jetty.handler;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLClassLoader;
import java.util.Arrays;
import java.util.Collections;
import java.util.Enumeration;
import java.util.EventListener;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Locale;
import java.util.Map;
import java.util.Set;
import javax.servlet.RequestDispatcher;
import javax.servlet.Servlet;
import javax.servlet.ServletContext;
import javax.servlet.ServletContextAttributeEvent;
import javax.servlet.ServletContextAttributeListener;
import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;
import javax.servlet.ServletException;
import javax.servlet.ServletRequestAttributeListener;
import javax.servlet.ServletRequestEvent;
import javax.servlet.ServletRequestListener;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.mortbay.io.Buffer;
import org.mortbay.jetty.Handler;
import org.mortbay.jetty.HandlerContainer;
import org.mortbay.jetty.HttpConnection;
import org.mortbay.jetty.HttpException;
import org.mortbay.jetty.MimeTypes;
import org.mortbay.jetty.Request;
import org.mortbay.jetty.Server;
import org.mortbay.jetty.webapp.WebAppClassLoader;
import org.mortbay.log.Log;
import org.mortbay.log.Logger;
import org.mortbay.resource.Resource;
import org.mortbay.util.Attributes;
import org.mortbay.util.AttributesMap;
import org.mortbay.util.LazyList;
import org.mortbay.util.Loader;
import org.mortbay.util.URIUtil;
/* ------------------------------------------------------------ */
/** ContextHandler.
*
* This handler wraps a call to handle by setting the context and
* servlet path, plus setting the context classloader.
*
* Note. Because of http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4425695
* directly replacing war or jar files in a context is not supported.
* You should use classes instead of jars if they will change, or deploy
* a packed war file that gets extracted on deployment.
*
*
* @org.apache.xbean.XBean description="Creates a basic HTTP context"
*
* @author gregw
*
*/
public class ContextHandler extends HandlerWrapper implements Attributes, Server.Graceful
{
private static ThreadLocal __context=new ThreadLocal();
/* ------------------------------------------------------------ */
/** Get the current ServletContext implementation.
* This call is only valid during a call to doStart and is available to
* nested handlers to access the context.
*
* @return ServletContext implementation
*/
public static SContext getCurrentContext()
{
SContext context = (SContext)__context.get();
return context;
}
protected SContext _scontext;
private Attributes _attributes;
private Attributes _contextAttributes;
private ClassLoader _classLoader;
private String _contextPath;
private Map _initParams;
private String _displayName;
private String _docRoot;
private Resource _baseResource;
private MimeTypes _mimeTypes;
private Map _localeEncodingMap;
private String[] _welcomeFiles;
private ErrorHandler _errorHandler;
private String[] _vhosts;
private Set _connectors;
private EventListener[] _eventListeners;
private Logger _logger;
private boolean _shutdown;
private boolean _allowNullPathInfo;
private int _maxFormContentSize=Integer.getInteger("org.mortbay.jetty.Request.maxFormContentSize",200000).intValue();
private boolean _compactPath=false;
private Object _contextListeners;
private Object _contextAttributeListeners;
private Object _requestListeners;
private Object _requestAttributeListeners;
/* ------------------------------------------------------------ */
/**
*
*/
public ContextHandler()
{
super();
_scontext=new SContext();
_attributes=new AttributesMap();
_initParams=new HashMap();
}
/* ------------------------------------------------------------ */
/**
*
*/
protected ContextHandler(SContext context)
{
super();
_scontext=context;
_attributes=new AttributesMap();
_initParams=new HashMap();
}
/* ------------------------------------------------------------ */
/**
*
*/
public ContextHandler(String contextPath)
{
this();
setContextPath(contextPath);
}
/* ------------------------------------------------------------ */
/**
*
*/
public ContextHandler(HandlerContainer parent, String contextPath)
{
this();
setContextPath(contextPath);
parent.addHandler(this);
}
/* ------------------------------------------------------------ */
public SContext getServletContext()
{
return _scontext;
}
/* ------------------------------------------------------------ */
/**
* @return the allowNullPathInfo true if /context is not redirected to /context/
*/
public boolean getAllowNullPathInfo()
{
return _allowNullPathInfo;
}
/* ------------------------------------------------------------ */
/**
* @param allowNullPathInfo true if /context is not redirected to /context/
*/
public void setAllowNullPathInfo(boolean allowNullPathInfo)
{
_allowNullPathInfo=allowNullPathInfo;
}
/* ------------------------------------------------------------ */
public void setServer(Server server)
{
if (_errorHandler!=null)
{
Server old_server=getServer();
if (old_server!=null && old_server!=server)
old_server.getContainer().update(this, _errorHandler, null, "error",true);
super.setServer(server);
if (server!=null && server!=old_server)
server.getContainer().update(this, null, _errorHandler, "error",true);
_errorHandler.setServer(server);
}
else
super.setServer(server);
}
/* ------------------------------------------------------------ */
/** Set the virtual hosts for the context.
* Only requests that have a matching host header or fully qualified
* URL will be passed to that context with a virtual host name.
* A context with no virtual host names or a null virtual host name is
* available to all requests that are not served by a context with a
* matching virtual host name.
* @param vhosts Array of virtual hosts that this context responds to. A
* null host name or null/empty array means any hostname is acceptable.
* Host names may String representation of IP addresses.
*/
public void setVirtualHosts( String[] vhosts )
{
if ( vhosts == null )
{
_vhosts = vhosts;
}
else
{
_vhosts = new String[vhosts.length];
for ( int i = 0; i < vhosts.length; i++ )
_vhosts[i] = normalizeHostname( vhosts[i]);
}
}
/* ------------------------------------------------------------ */
/** Get the virtual hosts for the context.
* Only requests that have a matching host header or fully qualified
* URL will be passed to that context with a virtual host name.
* A context with no virtual host names or a null virtual host name is
* available to all requests that are not served by a context with a
* matching virtual host name.
* @return Array of virtual hosts that this context responds to. A
* null host name or empty array means any hostname is acceptable.
* Host names may be String representation of IP addresses.
*/
public String[] getVirtualHosts()
{
return _vhosts;
}
/* ------------------------------------------------------------ */
/**
* @deprecated use {@link #setConnectorNames(String[])}
*/
public void setHosts(String[] hosts)
{
setConnectorNames(hosts);
}
/* ------------------------------------------------------------ */
/** Get the hosts for the context.
* @deprecated
*/
public String[] getHosts()
{
return getConnectorNames();
}
/* ------------------------------------------------------------ */
/**
* @return an array of connector names that this context
* will accept a request from.
*/
public String[] getConnectorNames()
{
if (_connectors==null || _connectors.size()==0)
return null;
return (String[])_connectors.toArray(new String[_connectors.size()]);
}
/* ------------------------------------------------------------ */
/** Set the names of accepted connectors.
*
* Names are either "host:port" or a specific configured name for a connector.
*
* @param connectors If non null, an array of connector names that this context
* will accept a request from.
*/
public void setConnectorNames(String[] connectors)
{
if (connectors==null || connectors.length==0)
_connectors=null;
else
_connectors= new HashSet(Arrays.asList(connectors));
}
/* ------------------------------------------------------------ */
/*
* @see javax.servlet.ServletContext#getAttribute(java.lang.String)
*/
public Object getAttribute(String name)
{
return _attributes.getAttribute(name);
}
/* ------------------------------------------------------------ */
/*
* @see javax.servlet.ServletContext#getAttributeNames()
*/
public Enumeration getAttributeNames()
{
return AttributesMap.getAttributeNamesCopy(_attributes);
}
/* ------------------------------------------------------------ */
/**
* @return Returns the attributes.
*/
public Attributes getAttributes()
{
return _attributes;
}
/* ------------------------------------------------------------ */
/**
* @return Returns the classLoader.
*/
public ClassLoader getClassLoader()
{
return _classLoader;
}
/* ------------------------------------------------------------ */
/**
* Make best effort to extract a file classpath from the context classloader
* @return Returns the classLoader.
*/
public String getClassPath()
{
if ( _classLoader==null || !(_classLoader instanceof URLClassLoader))
return null;
URLClassLoader loader = (URLClassLoader)_classLoader;
URL[] urls =loader.getURLs();
StringBuffer classpath=new StringBuffer();
for (int i=0;i0)
classpath.append(File.pathSeparatorChar);
classpath.append(file.getAbsolutePath());
}
}
catch (IOException e)
{
Log.debug(e);
}
}
if (classpath.length()==0)
return null;
return classpath.toString();
}
/* ------------------------------------------------------------ */
/**
* @return Returns the _contextPath.
*/
public String getContextPath()
{
return _contextPath;
}
/* ------------------------------------------------------------ */
/*
* @see javax.servlet.ServletContext#getInitParameter(java.lang.String)
*/
public String getInitParameter(String name)
{
return (String)_initParams.get(name);
}
/* ------------------------------------------------------------ */
/*
* @see javax.servlet.ServletContext#getInitParameterNames()
*/
public Enumeration getInitParameterNames()
{
return Collections.enumeration(_initParams.keySet());
}
/* ------------------------------------------------------------ */
/**
* @return Returns the initParams.
*/
public Map getInitParams()
{
return _initParams;
}
/* ------------------------------------------------------------ */
/*
* @see javax.servlet.ServletContext#getServletContextName()
*/
public String getDisplayName()
{
return _displayName;
}
/* ------------------------------------------------------------ */
public EventListener[] getEventListeners()
{
return _eventListeners;
}
/* ------------------------------------------------------------ */
public void setEventListeners(EventListener[] eventListeners)
{
_contextListeners=null;
_contextAttributeListeners=null;
_requestListeners=null;
_requestAttributeListeners=null;
_eventListeners=eventListeners;
for (int i=0; eventListeners!=null && i0;)
{
((ServletContextListener)LazyList.get(_contextListeners, i)).contextDestroyed(event);
}
}
if (_errorHandler!=null)
_errorHandler.stop();
}
finally
{
__context.set(old_context);
// reset the classloader
if (_classLoader!=null)
current_thread.setContextClassLoader(old_classloader);
}
if (_contextAttributes!=null)
_contextAttributes.clearAttributes();
_contextAttributes=null;
}
/* ------------------------------------------------------------ */
/*
* @see org.mortbay.jetty.Handler#handle(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
*/
public void handle(String target, HttpServletRequest request, HttpServletResponse response, int dispatch)
throws IOException, ServletException
{
boolean new_context=false;
SContext old_context=null;
String old_context_path=null;
String old_servlet_path=null;
String old_path_info=null;
ClassLoader old_classloader=null;
Thread current_thread=null;
Request base_request=(request instanceof Request)?(Request)request:HttpConnection.getCurrentConnection().getRequest();
if( !isStarted() || _shutdown || (dispatch==REQUEST && base_request.isHandled()))
return;
old_context=base_request.getContext();
// Are we already in this context?
if (old_context!=_scontext)
{
new_context=true;
// Check the vhosts
if (_vhosts!=null && _vhosts.length>0)
{
String vhost = normalizeHostname( request.getServerName());
boolean match=false;
// TODO non-linear lookup
for (int i=0;!match && i<_vhosts.length;i++)
match=_vhosts[i]!=null && _vhosts[i].equalsIgnoreCase(vhost);
if (!match)
return;
}
// Check the connector
if (_connectors!=null && _connectors.size()>0)
{
String connector=HttpConnection.getCurrentConnection().getConnector().getName();
if (connector==null || !_connectors.contains(connector))
return;
}
// Nope - so check the target.
if (dispatch==REQUEST)
{
if (_compactPath)
target=URIUtil.compactPath(target);
if (target.equals(_contextPath))
{
if (!_allowNullPathInfo && !target.endsWith(URIUtil.SLASH))
{
base_request.setHandled(true);
if (request.getQueryString()!=null)
response.sendRedirect(URIUtil.addPaths(request.getRequestURI(),URIUtil.SLASH)+"?"+request.getQueryString());
else
response.sendRedirect(URIUtil.addPaths(request.getRequestURI(),URIUtil.SLASH));
return;
}
if (_contextPath.length()>1)
{
target=URIUtil.SLASH;
request.setAttribute("org.mortbay.jetty.nullPathInfo",target);
}
}
else if (target.startsWith(_contextPath) && (_contextPath.length()==1 || target.charAt(_contextPath.length())=='/'))
{
if (_contextPath.length()>1)
target=target.substring(_contextPath.length());
}
else
{
// Not for this context!
return;
}
}
}
try
{
old_context_path=base_request.getContextPath();
old_servlet_path=base_request.getServletPath();
old_path_info=base_request.getPathInfo();
// Update the paths
base_request.setContext(_scontext);
if (dispatch!=INCLUDE && target.startsWith("/"))
{
if (_contextPath.length()==1)
base_request.setContextPath("");
else
base_request.setContextPath(_contextPath);
base_request.setServletPath(null);
base_request.setPathInfo(target);
}
ServletRequestEvent event=null;
if (new_context)
{
// Set the classloader
if (_classLoader!=null)
{
current_thread=Thread.currentThread();
old_classloader=current_thread.getContextClassLoader();
current_thread.setContextClassLoader(_classLoader);
}
// Handle the REALLY SILLY request events!
if (_requestListeners!=null)
{
event = new ServletRequestEvent(_scontext,request);
for(int i=0;i0;)
((ServletRequestListener)LazyList.get(_requestListeners,i)).requestDestroyed(event);
for(int i=0;i1 && contextPath.endsWith("/"))
throw new IllegalArgumentException("ends with /");
_contextPath = contextPath;
if (getServer()!=null && (getServer().isStarting() || getServer().isStarted()))
{
Handler[] contextCollections = getServer().getChildHandlersByClass(ContextHandlerCollection.class);
for (int h=0;contextCollections!=null&& hThe Servlet Specification
* @see #setWelcomeFiles
*/
public String[] getWelcomeFiles()
{
return _welcomeFiles;
}
/* ------------------------------------------------------------ */
/**
* @return Returns the errorHandler.
*/
public ErrorHandler getErrorHandler()
{
return _errorHandler;
}
/* ------------------------------------------------------------ */
/**
* @param errorHandler The errorHandler to set.
*/
public void setErrorHandler(ErrorHandler errorHandler)
{
if (errorHandler!=null)
errorHandler.setServer(getServer());
if (getServer()!=null)
getServer().getContainer().update(this, _errorHandler, errorHandler, "errorHandler",true);
_errorHandler = errorHandler;
}
/* ------------------------------------------------------------ */
public int getMaxFormContentSize()
{
return _maxFormContentSize;
}
/* ------------------------------------------------------------ */
public void setMaxFormContentSize(int maxSize)
{
_maxFormContentSize=maxSize;
}
/* ------------------------------------------------------------ */
/**
* @return True if URLs are compacted to replace multiple '/'s with a single '/'
*/
public boolean isCompactPath()
{
return _compactPath;
}
/* ------------------------------------------------------------ */
/**
* @param compactPath True if URLs are compacted to replace multiple '/'s with a single '/'
*/
public void setCompactPath(boolean compactPath)
{
_compactPath=compactPath;
}
/* ------------------------------------------------------------ */
public String toString()
{
return this.getClass().getName()+"@"+Integer.toHexString(hashCode())+"{"+getContextPath()+","+getBaseResource()+"}";
}
/* ------------------------------------------------------------ */
public synchronized Class loadClass(String className)
throws ClassNotFoundException
{
if (className==null)
return null;
if (_classLoader==null)
return Loader.loadClass(this.getClass(), className);
return _classLoader.loadClass(className);
}
/* ------------------------------------------------------------ */
public void addLocaleEncoding(String locale,String encoding)
{
if (_localeEncodingMap==null)
_localeEncodingMap=new HashMap();
_localeEncodingMap.put(locale, encoding);
}
/* ------------------------------------------------------------ */
/**
* Get the character encoding for a locale. The full locale name is first
* looked up in the map of encodings. If no encoding is found, then the
* locale language is looked up.
*
* @param locale a Locale value
* @return a String representing the character encoding for
* the locale or null if none found.
*/
public String getLocaleEncoding(Locale locale)
{
if (_localeEncodingMap==null)
return null;
String encoding = (String)_localeEncodingMap.get(locale.toString());
if (encoding==null)
encoding = (String)_localeEncodingMap.get(locale.getLanguage());
return encoding;
}
/* ------------------------------------------------------------ */
/*
*/
public Resource getResource(String path) throws MalformedURLException
{
if (path==null || !path.startsWith(URIUtil.SLASH))
throw new MalformedURLException(path);
if (_baseResource==null)
return null;
try
{
path=URIUtil.canonicalPath(path);
Resource resource=_baseResource.addPath(path);
return resource;
}
catch(Exception e)
{
Log.ignore(e);
}
return null;
}
/* ------------------------------------------------------------ */
/*
*/
public Set getResourcePaths(String path)
{
try
{
path=URIUtil.canonicalPath(path);
Resource resource=getResource(path);
if (resource!=null && resource.exists())
{
if (!path.endsWith(URIUtil.SLASH))
path=path+URIUtil.SLASH;
String[] l=resource.list();
if (l!=null)
{
HashSet set = new HashSet();
for(int i=0;i
* Implements {@link javax.servlet.ServletContext} from the {@link javax.servlet} package.
*
* @author gregw
*
*/
public class SContext implements ServletContext
{
/* ------------------------------------------------------------ */
protected SContext()
{
}
/* ------------------------------------------------------------ */
public ContextHandler getContextHandler()
{
// TODO reduce visibility of this method
return ContextHandler.this;
}
/* ------------------------------------------------------------ */
/*
* @see javax.servlet.ServletContext#getContext(java.lang.String)
*/
public ServletContext getContext(String uripath)
{
// TODO this is a very poor implementation!
// TODO move this to Server
ContextHandler context=null;
Handler[] handlers = getServer().getChildHandlersByClass(ContextHandler.class);
for (int i=0;icontext.getContextPath().length())
context=ch;
}
}
if (context!=null)
return context._scontext;
return null;
}
/* ------------------------------------------------------------ */
/*
* @see javax.servlet.ServletContext#getMajorVersion()
*/
public int getMajorVersion()
{
return 2;
}
/* ------------------------------------------------------------ */
/*
* @see javax.servlet.ServletContext#getMimeType(java.lang.String)
*/
public String getMimeType(String file)
{
if (_mimeTypes==null)
return null;
Buffer mime = _mimeTypes.getMimeByExtension(file);
if (mime!=null)
return mime.toString();
return null;
}
/* ------------------------------------------------------------ */
/*
* @see javax.servlet.ServletContext#getMinorVersion()
*/
public int getMinorVersion()
{
return 5;
}
/* ------------------------------------------------------------ */
/*
* @see javax.servlet.ServletContext#getNamedDispatcher(java.lang.String)
*/
public RequestDispatcher getNamedDispatcher(String name)
{
return null;
}
/* ------------------------------------------------------------ */
/*
* @see javax.servlet.ServletContext#getRealPath(java.lang.String)
*/
public String getRealPath(String path)
{
if (_docRoot==null)
return null;
if (path==null)
return null;
path=URIUtil.canonicalPath(path);
if (!path.startsWith(URIUtil.SLASH))
path=URIUtil.SLASH+path;
if (File.separatorChar!='/')
path =path.replace('/', File.separatorChar);
return _docRoot+path;
}
/* ------------------------------------------------------------ */
/*
* @see javax.servlet.ServletContext#getRequestDispatcher(java.lang.String)
*/
public RequestDispatcher getRequestDispatcher(String uriInContext)
{
return null;
}
/* ------------------------------------------------------------ */
/*
*/
public URL getResource(String path) throws MalformedURLException
{
Resource resource=ContextHandler.this.getResource(path);
if (resource!=null && resource.exists())
return resource.getURL();
return null;
}
/* ------------------------------------------------------------ */
/*
* @see javax.servlet.ServletContext#getResourceAsStream(java.lang.String)
*/
public InputStream getResourceAsStream(String path)
{
try
{
URL url=getResource(path);
if (url==null)
return null;
return url.openStream();
}
catch(Exception e)
{
Log.ignore(e);
return null;
}
}
/* ------------------------------------------------------------ */
/*
* @see javax.servlet.ServletContext#getResourcePaths(java.lang.String)
*/
public Set getResourcePaths(String path)
{
return ContextHandler.this.getResourcePaths(path);
}
/* ------------------------------------------------------------ */
/*
* @see javax.servlet.ServletContext#getServerInfo()
*/
public String getServerInfo()
{
return "jetty-"+getServer().getVersion();
}
/* ------------------------------------------------------------ */
/*
* @see javax.servlet.ServletContext#getServlet(java.lang.String)
*/
public Servlet getServlet(String name) throws ServletException
{
return null;
}
/* ------------------------------------------------------------ */
/*
* @see javax.servlet.ServletContext#getServletNames()
*/
public Enumeration getServletNames()
{
return Collections.enumeration(Collections.EMPTY_LIST);
}
/* ------------------------------------------------------------ */
/*
* @see javax.servlet.ServletContext#getServlets()
*/
public Enumeration getServlets()
{
return Collections.enumeration(Collections.EMPTY_LIST);
}
/* ------------------------------------------------------------ */
/*
* @see javax.servlet.ServletContext#log(java.lang.Exception, java.lang.String)
*/
public void log(Exception exception, String msg)
{
_logger.warn(msg,exception);
}
/* ------------------------------------------------------------ */
/*
* @see javax.servlet.ServletContext#log(java.lang.String)
*/
public void log(String msg)
{
_logger.info(msg, null, null);
}
/* ------------------------------------------------------------ */
/*
* @see javax.servlet.ServletContext#log(java.lang.String, java.lang.Throwable)
*/
public void log(String message, Throwable throwable)
{
_logger.warn(message,throwable);
}
/* ------------------------------------------------------------ */
/*
* @see javax.servlet.ServletContext#getInitParameter(java.lang.String)
*/
public String getInitParameter(String name)
{
return ContextHandler.this.getInitParameter(name);
}
/* ------------------------------------------------------------ */
/*
* @see javax.servlet.ServletContext#getInitParameterNames()
*/
public Enumeration getInitParameterNames()
{
return ContextHandler.this.getInitParameterNames();
}
/* ------------------------------------------------------------ */
/*
* @see javax.servlet.ServletContext#getAttribute(java.lang.String)
*/
public synchronized Object getAttribute(String name)
{
Object o = ContextHandler.this.getAttribute(name);
if (o==null)
o=_contextAttributes.getAttribute(name);
return o;
}
/* ------------------------------------------------------------ */
/*
* @see javax.servlet.ServletContext#getAttributeNames()
*/
public synchronized Enumeration getAttributeNames()
{
HashSet set = new HashSet();
Enumeration e = _contextAttributes.getAttributeNames();
while(e.hasMoreElements())
set.add(e.nextElement());
e = ContextHandler.this.getAttributeNames();
while(e.hasMoreElements())
set.add(e.nextElement());
return Collections.enumeration(set);
}
/* ------------------------------------------------------------ */
/*
* @see javax.servlet.ServletContext#setAttribute(java.lang.String, java.lang.Object)
*/
public synchronized void setAttribute(String name, Object value)
{
if (_contextAttributes==null)
return;
Object old_value=_contextAttributes==null?null:_contextAttributes.getAttribute(name);
if (value==null)
_contextAttributes.removeAttribute(name);
else
_contextAttributes.setAttribute(name,value);
if (_contextAttributeListeners!=null)
{
ServletContextAttributeEvent event =
new ServletContextAttributeEvent(_scontext,name, old_value==null?value:old_value);
for(int i=0;i
