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  /*
   * $Id: FacesServlet.java,v 1.34 2007/07/16 17:06:42 rlubke Exp $
   */
  
  /*
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
   * 
   * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
   * 
  * The contents of this file are subject to the terms of either the GNU
  * General Public License Version 2 only ("GPL") or the Common Development
  * and Distribution License("CDDL") (collectively, the "License").  You
  * may not use this file except in compliance with the License. You can obtain
  * a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
  * or glassfish/bootstrap/legal/LICENSE.txt.  See the License for the specific
  * language governing permissions and limitations under the License.
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  * Sun designates this particular file as subject to the "Classpath" exception
  * as provided by Sun in the GPL Version 2 section of the License file that
  * accompanied this code.  If applicable, add the following below the License
  * Header, with the fields enclosed by brackets [] replaced by your own
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  * 
  * Contributor(s):
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  * If you wish your version of this file to be governed by only the CDDL or
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  * its licensees as provided above.  However, if you add GPL Version 2 code
  * and therefore, elected the GPL Version 2 license, then the option applies
  * only if the new code is made subject to such option by the copyright
  * holder.
  */
 
 package javax.faces.webapp;
 
 
 

FacesServlet is a servlet that manages the request processing lifecycle for web applications that are utilizing JavaServer Faces to construct the user interface.

 
 
 public final class FacesServlet implements Servlet {


    

Context initialization parameter name for a comma delimited list of context-relative resource paths (in addition to /WEB-INF/faces-config.xml which is loaded automatically if it exists) containing JavaServer Faces configuration information.

 
     public static final String CONFIG_FILES_ATTR =
         "javax.faces.CONFIG_FILES";


    

Context initialization parameter name for the lifecycle identifier of the javax.faces.lifecycle.Lifecycle instance to be utilized.

 
     public static final String LIFECYCLE_ID_ATTR =
         "javax.faces.LIFECYCLE_ID";


    
The Logger for this class.
 
     private static final Logger LOGGER =
           Logger.getLogger("javax.faces.webapp""javax.faces.LogStrings");


    

Factory for javax.faces.context.FacesContext instances.

    private FacesContextFactory facesContextFactory = null;


    

The javax.faces.lifecycle.Lifecycle instance to use for request processing.

    private Lifecycle lifecycle = null;


    

The ServletConfig instance for this servlet.

    private ServletConfig servletConfig = null;


    

Release all resources acquired at startup time.

    public void destroy() {
         = null;
         = null;
         = null;
    }


    

Return the ServletConfig instance for this servlet.

    public ServletConfig getServletConfig() {
        return (this.);
    }


    

Return information about this Servlet.

    public String getServletInfo() {
        return (this.getClass().getName());
    }


    

Acquire the factory instances we will require.

Throws:
javax.servlet.ServletException if, for any reason, the startup of this Faces application failed. This includes errors in the config file that is parsed before or during the processing of this init() method.
    public void init(ServletConfig servletConfigthrows ServletException {
        // Save our ServletConfig instance
        this. = servletConfig;
        // Acquire our FacesContextFactory instance
        try {
             = (FacesContextFactory)
                FactoryFinder.getFactory
                (.);
        } catch (FacesException e) {
            ResourceBundle rb = .getResourceBundle();
            String msg = rb.getString("severe.webapp.facesservlet.init_failed");
            Throwable rootCause = (e.getCause() != null) ? e.getCause() : e;
            .log(.msgrootCause);
            throw new UnavailableException(msg);
        }
        // Acquire our Lifecycle instance
        try {
            LifecycleFactory lifecycleFactory = (LifecycleFactory)
                FactoryFinder.getFactory(.);
            String lifecycleId ;
            // First look in the servlet init-param set
            if (null == (lifecycleId = servletConfig.getInitParameter())) {
                // If not found, look in the context-param set 
                lifecycleId = servletConfig.getServletContext().getInitParameter
                    ();
            }
            if (lifecycleId == null) {
                lifecycleId = .;
            }
             = lifecycleFactory.getLifecycle(lifecycleId);
        } catch (FacesException e) {
            Throwable rootCause = e.getCause();
            if (rootCause == null) {
                throw e;
            } else {
                throw new ServletException(e.getMessage(), rootCause);
            }
        }
    }


    

Process an incoming request, and create the corresponding response, by executing the request processing lifecycle.

If the request and response arguments to this method are not instances of HttpServletRequest and HttpServletResponse, respectively, the results of invoking this method are undefined.

This method must respond to requests that start with the following strings by invoking the sendError method on the response argument (cast to HttpServletResponse), passing the code HttpServletResponse.SC_NOT_FOUND as the argument.

    
    /WEB-INF/
    /WEB-INF
    /META-INF/
    /META-INF
    

Parameters:
request The servlet request we are processing
response The servlet response we are creating
Throws:
java.io.IOException if an input/output error occurs during processing
javax.servlet.ServletException if a servlet error occurs during processing
    public void service(ServletRequest request,
                        ServletResponse response)
        throws IOExceptionServletException {
        // If prefix mapped, then ensure requests for /WEB-INF are
        // not processed.
        String pathInfo = ((HttpServletRequestrequest).getPathInfo();
        if (pathInfo != null) {
            pathInfo = pathInfo.toUpperCase();
            if (pathInfo.startsWith("/WEB-INF/")
                || pathInfo.equals("/WEB-INF")
                || pathInfo.startsWith("/META-INF/")
                || pathInfo.equals("/META-INF")) {
                ((HttpServletResponseresponse).
                      sendError(.);
                return;
            }
        }    
        
        // Acquire the FacesContext instance for this request
            (.getServletContext(), requestresponse);
        // Execute the request processing lifecycle for this request
        try {
            .execute(context);
            .render(context);
        } catch (FacesException e) {
            Throwable t = e.getCause();
            if (t == null) {
                throw new ServletException(e.getMessage(), e);
            } else {
                if (t instanceof ServletException) {
                    throw ((ServletExceptiont);
                } else if (t instanceof IOException) {
                    throw ((IOExceptiont);
                } else {
                    throw new ServletException(t.getMessage(), t);
                }
            }
        }
        finally {
            // Release the FacesContext instance for this request
            context.release();
        }
    }
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