appserver/web/web-naming/src/main/java/org/apache/naming/resources/WebDirContext.java - glassfish - Git at Google

 /*
  * Copyright (c) 2013-2018 Oracle and/or its affiliates. All rights reserved.
  * Copyright 2004 The Apache Software Foundation
  *
  * 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.apache.naming.resources;

 import java.io.File;
 import java.io.InputStream;
 import java.io.IOException;
 import java.io.ObjectInputStream;
 import java.io.ObjectOutputStream;
 import java.text.MessageFormat;
 import java.util.*;
 import java.util.jar.JarEntry;
 import java.util.jar.JarFile;

 import javax.naming.Binding;
 import javax.naming.NameClassPair;
 import javax.naming.NamingEnumeration;
 import javax.naming.NamingException;
 import javax.naming.directory.Attributes;

 import org.apache.naming.LogFacade;
 import org.apache.naming.NamingEntry;
 import org.apache.naming.NamingContextBindingsEnumeration;
 import org.apache.naming.NamingContextEnumeration;

 /**
  * Filesystem Directory Web Context implementation helper class.
  *
  * @author Shing Wai Chan
  */

 public class WebDirContext extends FileDirContext {

     // -------------------------------------------------------------- Constants

     protected static final String META_INF_RESOURCES = "META-INF/resources/";


     // ----------------------------------------------------------- Constructors


     /**
      * Builds a file directory context using the given environment.
      */
     public WebDirContext() {
         super();
     }


     /**
      * Builds a file directory context using the given environment.
      */
     public WebDirContext(Hashtable<String, Object> env) {
         super(env);
     }


     // ----------------------------------------------------- Instance Variables

     protected JarFileResourcesProvider jarFileResourcesProvider = null;

     protected String jarResourceBase = META_INF_RESOURCES;


     // ------------------------------------------------------------- Properties

     public void setJarFileResourcesProvider(
             JarFileResourcesProvider jarFileResourcesProvider) {
         this.jarFileResourcesProvider = jarFileResourcesProvider;
     }

     void setJarResourceBase(String jarResourceBase) {
         this.jarResourceBase = jarResourceBase;
     }

     // --------------------------------------------------------- Public Methods


     /**
      * Release any resources allocated for this directory context.
      */
     @Override
     public void release() {

         jarFileResourcesProvider = null;
         jarResourceBase = null;
         super.release();

     }


     // -------------------------------------------------------- Context Methods


     /**
      * Retrieves the named object.
      *
      * @param name the name of the object to look up
      * @return the object bound to name
      * @exception NamingException if a naming exception is encountered
      */
     @Override
     public Object lookup(String name)
         throws NamingException {
         Object result = null;
         File file = file(name);
         JarFileEntry jfEntry = null;

         if (file == null) {
             jfEntry = lookupFromJars(name);
             if (jfEntry == null) {
                 throw new NamingException
                     (MessageFormat.format(rb.getString(LogFacade.RESOURCES_NOT_FOUND), name));
             }
         }

         if ((file != null && file.isDirectory()) ||
                 (jfEntry != null && jfEntry.getJarEntry().isDirectory())) {
             WebDirContext tempContext = new WebDirContext(env);
             tempContext.docBase = name;
             tempContext.setAllowLinking(getAllowLinking());
             tempContext.setCaseSensitive(isCaseSensitive());
             tempContext.setJarFileResourcesProvider(jarFileResourcesProvider);
             tempContext.setJarResourceBase(getAbsoluteJarResourceName(name));
             result = tempContext;
         } else if (file != null) {
             result = new FileResource(file);
         } else if (jfEntry != null) {
             result = new JarResource(jfEntry.jarFile, jfEntry.jarEntry);
         }

         return result;

     }


     /**
      * Enumerates the names bound in the named context, along with the class
      * names of objects bound to them. The contents of any subcontexts are
      * not included.
      * <p>
      * If a binding is added to or removed from this context, its effect on
      * an enumeration previously returned is undefined.
      *
      * @param name the name of the context to list
      * @return an enumeration of the names and class names of the bindings in
      * this context. Each element of the enumeration is of type NameClassPair.
      * @exception NamingException if a naming exception is encountered
      */
     @Override
     public NamingEnumeration<NameClassPair> list(String name)
         throws NamingException {

         List<NamingEntry> namingEntries = null;
         File file = file(name);
         if (file != null) {
             namingEntries = list(file);
         }
         List<JarFileEntry> jfeEntries = lookupAllFromJars(name);
         for (JarFileEntry jfeEntry : jfeEntries) {
             List<NamingEntry> jfList = list(jfeEntry);
             if (namingEntries != null) {
                 namingEntries.addAll(jfList);
             } else {
                 namingEntries = jfList;
             }
         }

         if (file == null && jfeEntries.size() == 0) {
             throw new NamingException
                     (MessageFormat.format(rb.getString(LogFacade.RESOURCES_NOT_FOUND), name));
         }
         return new NamingContextEnumeration(namingEntries.iterator());
     }


     /**
      * Enumerates the names bound in the named context, along with the
      * objects bound to them. The contents of any subcontexts are not
      * included.
      * <p>
      * If a binding is added to or removed from this context, its effect on
      * an enumeration previously returned is undefined.
      *
      * @param name the name of the context to list
      * @return an enumeration of the bindings in this context.
      * Each element of the enumeration is of type Binding.
      * @exception NamingException if a naming exception is encountered
      */
     @Override
     public NamingEnumeration<Binding> listBindings(String name)
         throws NamingException {

         List<NamingEntry> namingEntries = null;
         File file = file(name);
         if (file != null) {
             namingEntries = list(file);
         }
         List<JarFileEntry> jfeEntries = lookupAllFromJars(name);
         for (JarFileEntry jfeEntry : jfeEntries) {
             List<NamingEntry> jfeList = list(jfeEntry);
             if (namingEntries != null) {
                 namingEntries.addAll(jfeList);
             } else {
                 namingEntries = jfeList;
             }
         }

         if (file == null && jfeEntries.size() == 0) {
             throw new NamingException
                     (MessageFormat.format(rb.getString(LogFacade.RESOURCES_NOT_FOUND), name));
         }

         return new NamingContextBindingsEnumeration(namingEntries.iterator(),
                 this);

     }


     // ----------------------------------------------------- DirContext Methods


     /**
      * Retrieves selected attributes associated with a named object.
      * See the class description regarding attribute models, attribute type
      * names, and operational attributes.
      *
      * @return the requested attributes; never null
      * @param name the name of the object from which to retrieve attributes
      * @param attrIds the identifiers of the attributes to retrieve. null
      * indicates that all attributes should be retrieved; an empty array
      * indicates that none should be retrieved
      * @exception NamingException if a naming exception is encountered
      */
     @Override
     public Attributes getAttributes(String name, String[] attrIds)
         throws NamingException {

         // Building attribute list
         File file = file(name);

         if (file == null) {
             JarFileEntry jfEntry = lookupFromJars(name);
             if (jfEntry == null) {
                 throw new NamingException
                     (MessageFormat.format(rb.getString(LogFacade.RESOURCES_NOT_FOUND), name));
             } else {
                 return new JarResourceAttributes(jfEntry.getJarEntry());
             }
         } else {
             return new FileResourceAttributes(file);
         }

     }


     // ------------------------------------------------------ Protected Methods

     protected JarFileEntry lookupFromJars(String name) {
         JarFileEntry result = null;
         JarFile[] jarFiles = null;
         if (jarFileResourcesProvider != null) {
             jarFiles = jarFileResourcesProvider.getJarFiles();
         }
         if (jarFiles != null) {
             String jeName = getAbsoluteJarResourceName(name);
             for (JarFile jarFile : jarFiles) {
                 JarEntry jarEntry = null;
                 if (jeName.charAt(jeName.length() - 1) != '/') {
                     jarEntry = jarFile.getJarEntry(jeName + '/');
                     if (jarEntry != null) {
                         result = new JarFileEntry(jarFile, jarEntry);
                         break;
                     }
                 }
                 jarEntry = jarFile.getJarEntry(jeName);
                 if (jarEntry != null) {
                     result = new JarFileEntry(jarFile, jarEntry);
                     break;
                 }
             }
         }

         return result;
     }

     protected List<JarFileEntry> lookupAllFromJars(String name) {
         List<JarFileEntry> results = new ArrayList<JarFileEntry>();
         JarFile[] jarFiles = null;
         if (jarFileResourcesProvider != null) {
             jarFiles = jarFileResourcesProvider.getJarFiles();
         }
         if (jarFiles != null) {
             String jeName = getAbsoluteJarResourceName(name);
             for (JarFile jarFile : jarFiles) {
                 JarEntry jarEntry = null;
                 if (jeName.charAt(jeName.length() - 1) != '/') {
                     jarEntry = jarFile.getJarEntry(jeName + '/');
                     if (jarEntry != null) {
                         results.add(new JarFileEntry(jarFile, jarEntry));
                     }
                 }
                 jarEntry = jarFile.getJarEntry(jeName);
                 if (jarEntry != null) {
                     results.add(new JarFileEntry(jarFile, jarEntry));
                 }
             }
         }

         return results;
     }

     protected List<NamingEntry> list(JarFileEntry jfeEntry) {
         List<NamingEntry> entries = new ArrayList<NamingEntry>();
         JarFile jarFile = jfeEntry.jarFile;
         JarEntry jarEntry = jfeEntry.jarEntry;
         if (!jarEntry.isDirectory()) {
             return entries;
         }

         String prefix = jarEntry.getName();
         int prefixLength = prefix.length();

         Enumeration<JarEntry> e = jarFile.entries();
         while (e.hasMoreElements()) {
             JarEntry je = e.nextElement();
             String name = je.getName();
             if (name.length() > prefixLength && name.startsWith(prefix)) {
                 int endIndex = name.indexOf('/', prefixLength);
                 if (endIndex != -1 && endIndex != name.length() - 1) {
                     // more levels
                     continue;
                 }
                 String subName = ((endIndex != -1)?
                         name.substring(prefixLength, endIndex) :
                         name.substring(prefixLength));

                 Object object = null;
                 if (je.isDirectory()) {
                     WebDirContext tempContext = new WebDirContext(env);
                     tempContext.docBase = name;
                     tempContext.setAllowLinking(getAllowLinking());
                     tempContext.setCaseSensitive(isCaseSensitive());
                     tempContext.setJarFileResourcesProvider(jarFileResourcesProvider);
                     tempContext.setJarResourceBase(name);
                     object = tempContext;
                 } else {
                     object = new JarResource(jarFile, je);
                 }

                 entries.add(new NamingEntry(subName, object, NamingEntry.ENTRY));

             }
         }

         return entries;
     }

     protected String getAbsoluteJarResourceName(String name) {
         if (name.length() == 0) {
             return jarResourceBase;
         }
         boolean firstEndsWithSlash = (jarResourceBase.charAt(jarResourceBase.length() -1) == '/');
         // name has length > 0 here
         boolean secondStartWithSlash = (name.charAt(0) == '/');
         if (firstEndsWithSlash && secondStartWithSlash) {
             return jarResourceBase.substring(0, jarResourceBase.length() - 1) + name;
         } else if (!firstEndsWithSlash && !secondStartWithSlash) {
             return jarResourceBase + '/' + name;
         } else {
             return jarResourceBase + name;
         }
     }

     // ----------------------------------------------- FileResource Inner Class


     // ------------------------------------- JarFileEntry Inner Class
     protected static class JarFileEntry {
         private JarFile jarFile = null;
         private JarEntry jarEntry = null;

         protected JarFileEntry(JarFile jf, JarEntry je) {
             jarFile = jf;
             jarEntry = je;
         }

         JarFile getJarFile() {
             return jarFile;
         }

         JarEntry getJarEntry() {
             return jarEntry;
         }
     }


     // ------------------------------------- JarResource Inner Class

     /**
      * This specialized resource implementation avoids opening the InputStream
      * to the jar entry right away (which would put a lock on the jar file).
      */
     protected static class JarResource extends Resource {


         // -------------------------------------------------------- Constructor


         public JarResource(JarFile jarFile, JarEntry jarEntry) {
             this.jarFile = jarFile;
             this.jarEntry = jarEntry;
         }


         // --------------------------------------------------- Member Variables


         /**
          * Associated JarFile object.
          */
         protected JarFile jarFile;


         /**
          * Associated JarEntry object.
          */
         protected JarEntry jarEntry;


         // --------------------------------------------------- Resource Methods


         /**
          * Content accessor.
          *
          * @return InputStream
          */
         public InputStream streamContent()
             throws IOException {
             if (binaryContent == null) {
                 InputStream jin = jarFile.getInputStream(jarEntry);
                 inputStream = jin;
                 return jin;
             }
             return super.streamContent();
         }


     }

     // ------------------------------------- JarResourceAttributes Inner Class


     /**
      * This specialized resource attribute implementation does some lazy
      * reading (to speed up simple checks, like checking the last modified
      * date).
      */
     protected static class JarResourceAttributes extends ResourceAttributes {


         // -------------------------------------------------------- Constructor


         public JarResourceAttributes(JarEntry jarEntry) {
             this.jarEntry = jarEntry;
             getCreation();
             getLastModified();
         }

         // --------------------------------------------------- Member Variables


         protected transient JarEntry jarEntry;


         protected boolean accessed = false;


         // ----------------------------------------- ResourceAttributes Methods


         /**
          * Is collection.
          */
         public boolean isCollection() {
             if (!accessed) {
                 collection = jarEntry.isDirectory();
                 accessed = true;
             }
             return super.isCollection();
         }


         /**
          * Get content length.
          *
          * @return content length value
          */
         public long getContentLength() {
             if (contentLength != -1L)
                 return contentLength;
             contentLength = jarEntry.getSize();
             return contentLength;
         }


         /**
          * Get creation time.
          *
          * @return creation time value
          */
         public long getCreation() {
             if (creation != -1L)
                 return creation;
             creation = getLastModified();
             return creation;
         }


         /**
          * Get creation date.
          *
          * @return Creation date value
          */
         public Date getCreationDate() {
             if (creation == -1L) {
                 creation = jarEntry.getTime();
             }
             return super.getCreationDate();
         }


         /**
          * Get last modified time.
          *
          * @return lastModified time value
          */
         public long getLastModified() {
             if (lastModified != -1L)
                 return lastModified;
             lastModified = jarEntry.getTime();
             return lastModified;
         }


         /**
          * Get lastModified date.
          *
          * @return LastModified date value
          */
         public Date getLastModifiedDate() {
             if (lastModified == -1L) {
                 lastModified = jarEntry.getTime();
             }
             return super.getLastModifiedDate();
         }


         /**
          * Get name.
          *
          * @return Name value
          */
         public String getName() {
             if (name == null)
                 name = jarEntry.getName();
             return name;
         }


         /**
          * Get resource type.
          *
          * @return String resource type
          */
         public String getResourceType() {
             if (!accessed) {
                 collection = jarEntry.isDirectory();
                 accessed = true;
             }
             return super.getResourceType();
         }


         /**
          * Get canonical path.
          *
          * @return String the file's canonical path
          */
         public String getCanonicalPath() {
             return null;
         }

         // ----------------------------------------- Serializables Methods

         private void readObject(ObjectInputStream ois) throws IOException {
             throw new UnsupportedOperationException();
         }

         private void writeObject(ObjectOutputStream oos) throws IOException {
             throw new UnsupportedOperationException();
         }
     }
 }
	/*
	* Copyright (c) 2013-2018 Oracle and/or its affiliates. All rights reserved.
	* Copyright 2004 The Apache Software Foundation
	*
	* 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.apache.naming.resources;

	import java.io.File;
	import java.io.InputStream;
	import java.io.IOException;
	import java.io.ObjectInputStream;
	import java.io.ObjectOutputStream;
	import java.text.MessageFormat;
	import java.util.*;
	import java.util.jar.JarEntry;
	import java.util.jar.JarFile;

	import javax.naming.Binding;
	import javax.naming.NameClassPair;
	import javax.naming.NamingEnumeration;
	import javax.naming.NamingException;
	import javax.naming.directory.Attributes;

	import org.apache.naming.LogFacade;
	import org.apache.naming.NamingEntry;
	import org.apache.naming.NamingContextBindingsEnumeration;
	import org.apache.naming.NamingContextEnumeration;

	/**
	* Filesystem Directory Web Context implementation helper class.
	*
	* @author Shing Wai Chan
	*/

	public class WebDirContext extends FileDirContext {

	// -------------------------------------------------------------- Constants

	protected static final String META_INF_RESOURCES = "META-INF/resources/";


	// ----------------------------------------------------------- Constructors


	/**
	* Builds a file directory context using the given environment.
	*/
	public WebDirContext() {
	super();
	}


	/**
	* Builds a file directory context using the given environment.
	*/
	public WebDirContext(Hashtable<String, Object> env) {
	super(env);
	}


	// ----------------------------------------------------- Instance Variables

	protected JarFileResourcesProvider jarFileResourcesProvider = null;

	protected String jarResourceBase = META_INF_RESOURCES;


	// ------------------------------------------------------------- Properties

	public void setJarFileResourcesProvider(
	JarFileResourcesProvider jarFileResourcesProvider) {
	this.jarFileResourcesProvider = jarFileResourcesProvider;
	}

	void setJarResourceBase(String jarResourceBase) {
	this.jarResourceBase = jarResourceBase;
	}

	// --------------------------------------------------------- Public Methods


	/**
	* Release any resources allocated for this directory context.
	*/
	@Override
	public void release() {

	jarFileResourcesProvider = null;
	jarResourceBase = null;
	super.release();

	}


	// -------------------------------------------------------- Context Methods


	/**
	* Retrieves the named object.
	*
	* @param name the name of the object to look up
	* @return the object bound to name
	* @exception NamingException if a naming exception is encountered
	*/
	@Override
	public Object lookup(String name)
	throws NamingException {
	Object result = null;
	File file = file(name);
	JarFileEntry jfEntry = null;

	if (file == null) {
	jfEntry = lookupFromJars(name);
	if (jfEntry == null) {
	throw new NamingException
	(MessageFormat.format(rb.getString(LogFacade.RESOURCES_NOT_FOUND), name));
	}
	}

	if ((file != null && file.isDirectory()) \|\|
	(jfEntry != null && jfEntry.getJarEntry().isDirectory())) {
	WebDirContext tempContext = new WebDirContext(env);
	tempContext.docBase = name;
	tempContext.setAllowLinking(getAllowLinking());
	tempContext.setCaseSensitive(isCaseSensitive());
	tempContext.setJarFileResourcesProvider(jarFileResourcesProvider);
	tempContext.setJarResourceBase(getAbsoluteJarResourceName(name));
	result = tempContext;
	} else if (file != null) {
	result = new FileResource(file);
	} else if (jfEntry != null) {
	result = new JarResource(jfEntry.jarFile, jfEntry.jarEntry);
	}

	return result;

	}


	/**
	* Enumerates the names bound in the named context, along with the class
	* names of objects bound to them. The contents of any subcontexts are
	* not included.
	* <p>
	* If a binding is added to or removed from this context, its effect on
	* an enumeration previously returned is undefined.
	*
	* @param name the name of the context to list
	* @return an enumeration of the names and class names of the bindings in
	* this context. Each element of the enumeration is of type NameClassPair.
	* @exception NamingException if a naming exception is encountered
	*/
	@Override
	public NamingEnumeration<NameClassPair> list(String name)
	throws NamingException {

	List<NamingEntry> namingEntries = null;
	File file = file(name);
	if (file != null) {
	namingEntries = list(file);
	}
	List<JarFileEntry> jfeEntries = lookupAllFromJars(name);
	for (JarFileEntry jfeEntry : jfeEntries) {
	List<NamingEntry> jfList = list(jfeEntry);
	if (namingEntries != null) {
	namingEntries.addAll(jfList);
	} else {
	namingEntries = jfList;
	}
	}

	if (file == null && jfeEntries.size() == 0) {
	throw new NamingException
	(MessageFormat.format(rb.getString(LogFacade.RESOURCES_NOT_FOUND), name));
	}
	return new NamingContextEnumeration(namingEntries.iterator());
	}


	/**
	* Enumerates the names bound in the named context, along with the
	* objects bound to them. The contents of any subcontexts are not
	* included.
	* <p>
	* If a binding is added to or removed from this context, its effect on
	* an enumeration previously returned is undefined.
	*
	* @param name the name of the context to list
	* @return an enumeration of the bindings in this context.
	* Each element of the enumeration is of type Binding.
	* @exception NamingException if a naming exception is encountered
	*/
	@Override
	public NamingEnumeration<Binding> listBindings(String name)
	throws NamingException {

	List<NamingEntry> namingEntries = null;
	File file = file(name);
	if (file != null) {
	namingEntries = list(file);
	}
	List<JarFileEntry> jfeEntries = lookupAllFromJars(name);
	for (JarFileEntry jfeEntry : jfeEntries) {
	List<NamingEntry> jfeList = list(jfeEntry);
	if (namingEntries != null) {
	namingEntries.addAll(jfeList);
	} else {
	namingEntries = jfeList;
	}
	}

	if (file == null && jfeEntries.size() == 0) {
	throw new NamingException
	(MessageFormat.format(rb.getString(LogFacade.RESOURCES_NOT_FOUND), name));
	}

	return new NamingContextBindingsEnumeration(namingEntries.iterator(),
	this);

	}


	// ----------------------------------------------------- DirContext Methods


	/**
	* Retrieves selected attributes associated with a named object.
	* See the class description regarding attribute models, attribute type
	* names, and operational attributes.
	*
	* @return the requested attributes; never null
	* @param name the name of the object from which to retrieve attributes
	* @param attrIds the identifiers of the attributes to retrieve. null
	* indicates that all attributes should be retrieved; an empty array
	* indicates that none should be retrieved
	* @exception NamingException if a naming exception is encountered
	*/
	@Override
	public Attributes getAttributes(String name, String[] attrIds)
	throws NamingException {

	// Building attribute list
	File file = file(name);

	if (file == null) {
	JarFileEntry jfEntry = lookupFromJars(name);
	if (jfEntry == null) {
	throw new NamingException
	(MessageFormat.format(rb.getString(LogFacade.RESOURCES_NOT_FOUND), name));
	} else {
	return new JarResourceAttributes(jfEntry.getJarEntry());
	}
	} else {
	return new FileResourceAttributes(file);
	}

	}


	// ------------------------------------------------------ Protected Methods

	protected JarFileEntry lookupFromJars(String name) {
	JarFileEntry result = null;
	JarFile[] jarFiles = null;
	if (jarFileResourcesProvider != null) {
	jarFiles = jarFileResourcesProvider.getJarFiles();
	}
	if (jarFiles != null) {
	String jeName = getAbsoluteJarResourceName(name);
	for (JarFile jarFile : jarFiles) {
	JarEntry jarEntry = null;
	if (jeName.charAt(jeName.length() - 1) != '/') {
	jarEntry = jarFile.getJarEntry(jeName + '/');
	if (jarEntry != null) {
	result = new JarFileEntry(jarFile, jarEntry);
	break;
	}
	}
	jarEntry = jarFile.getJarEntry(jeName);
	if (jarEntry != null) {
	result = new JarFileEntry(jarFile, jarEntry);
	break;
	}
	}
	}

	return result;
	}

	protected List<JarFileEntry> lookupAllFromJars(String name) {
	List<JarFileEntry> results = new ArrayList<JarFileEntry>();
	JarFile[] jarFiles = null;
	if (jarFileResourcesProvider != null) {
	jarFiles = jarFileResourcesProvider.getJarFiles();
	}
	if (jarFiles != null) {
	String jeName = getAbsoluteJarResourceName(name);
	for (JarFile jarFile : jarFiles) {
	JarEntry jarEntry = null;
	if (jeName.charAt(jeName.length() - 1) != '/') {
	jarEntry = jarFile.getJarEntry(jeName + '/');
	if (jarEntry != null) {
	results.add(new JarFileEntry(jarFile, jarEntry));
	}
	}
	jarEntry = jarFile.getJarEntry(jeName);
	if (jarEntry != null) {
	results.add(new JarFileEntry(jarFile, jarEntry));
	}
	}
	}

	return results;
	}

	protected List<NamingEntry> list(JarFileEntry jfeEntry) {
	List<NamingEntry> entries = new ArrayList<NamingEntry>();
	JarFile jarFile = jfeEntry.jarFile;
	JarEntry jarEntry = jfeEntry.jarEntry;
	if (!jarEntry.isDirectory()) {
	return entries;
	}

	String prefix = jarEntry.getName();
	int prefixLength = prefix.length();

	Enumeration<JarEntry> e = jarFile.entries();
	while (e.hasMoreElements()) {
	JarEntry je = e.nextElement();
	String name = je.getName();
	if (name.length() > prefixLength && name.startsWith(prefix)) {
	int endIndex = name.indexOf('/', prefixLength);
	if (endIndex != -1 && endIndex != name.length() - 1) {
	// more levels
	continue;
	}
	String subName = ((endIndex != -1)?
	name.substring(prefixLength, endIndex) :
	name.substring(prefixLength));

	Object object = null;
	if (je.isDirectory()) {
	WebDirContext tempContext = new WebDirContext(env);
	tempContext.docBase = name;
	tempContext.setAllowLinking(getAllowLinking());
	tempContext.setCaseSensitive(isCaseSensitive());
	tempContext.setJarFileResourcesProvider(jarFileResourcesProvider);
	tempContext.setJarResourceBase(name);
	object = tempContext;
	} else {
	object = new JarResource(jarFile, je);
	}

	entries.add(new NamingEntry(subName, object, NamingEntry.ENTRY));

	}
	}

	return entries;
	}

	protected String getAbsoluteJarResourceName(String name) {
	if (name.length() == 0) {
	return jarResourceBase;
	}
	boolean firstEndsWithSlash = (jarResourceBase.charAt(jarResourceBase.length() -1) == '/');
	// name has length > 0 here
	boolean secondStartWithSlash = (name.charAt(0) == '/');
	if (firstEndsWithSlash && secondStartWithSlash) {
	return jarResourceBase.substring(0, jarResourceBase.length() - 1) + name;
	} else if (!firstEndsWithSlash && !secondStartWithSlash) {
	return jarResourceBase + '/' + name;
	} else {
	return jarResourceBase + name;
	}
	}

	// ----------------------------------------------- FileResource Inner Class


	// ------------------------------------- JarFileEntry Inner Class
	protected static class JarFileEntry {
	private JarFile jarFile = null;
	private JarEntry jarEntry = null;

	protected JarFileEntry(JarFile jf, JarEntry je) {
	jarFile = jf;
	jarEntry = je;
	}

	JarFile getJarFile() {
	return jarFile;
	}

	JarEntry getJarEntry() {
	return jarEntry;
	}
	}


	// ------------------------------------- JarResource Inner Class

	/**
	* This specialized resource implementation avoids opening the InputStream
	* to the jar entry right away (which would put a lock on the jar file).
	*/
	protected static class JarResource extends Resource {


	// -------------------------------------------------------- Constructor


	public JarResource(JarFile jarFile, JarEntry jarEntry) {
	this.jarFile = jarFile;
	this.jarEntry = jarEntry;
	}


	// --------------------------------------------------- Member Variables


	/**
	* Associated JarFile object.
	*/
	protected JarFile jarFile;


	/**
	* Associated JarEntry object.
	*/
	protected JarEntry jarEntry;


	// --------------------------------------------------- Resource Methods


	/**
	* Content accessor.
	*
	* @return InputStream
	*/
	public InputStream streamContent()
	throws IOException {
	if (binaryContent == null) {
	InputStream jin = jarFile.getInputStream(jarEntry);
	inputStream = jin;
	return jin;
	}
	return super.streamContent();
	}


	}

	// ------------------------------------- JarResourceAttributes Inner Class


	/**
	* This specialized resource attribute implementation does some lazy
	* reading (to speed up simple checks, like checking the last modified
	* date).
	*/
	protected static class JarResourceAttributes extends ResourceAttributes {


	// -------------------------------------------------------- Constructor


	public JarResourceAttributes(JarEntry jarEntry) {
	this.jarEntry = jarEntry;
	getCreation();
	getLastModified();
	}

	// --------------------------------------------------- Member Variables


	protected transient JarEntry jarEntry;


	protected boolean accessed = false;


	// ----------------------------------------- ResourceAttributes Methods


	/**
	* Is collection.
	*/
	public boolean isCollection() {
	if (!accessed) {
	collection = jarEntry.isDirectory();
	accessed = true;
	}
	return super.isCollection();
	}


	/**
	* Get content length.
	*
	* @return content length value
	*/
	public long getContentLength() {
	if (contentLength != -1L)
	return contentLength;
	contentLength = jarEntry.getSize();
	return contentLength;
	}


	/**
	* Get creation time.
	*
	* @return creation time value
	*/
	public long getCreation() {
	if (creation != -1L)
	return creation;
	creation = getLastModified();
	return creation;
	}


	/**
	* Get creation date.
	*
	* @return Creation date value
	*/
	public Date getCreationDate() {
	if (creation == -1L) {
	creation = jarEntry.getTime();
	}
	return super.getCreationDate();
	}


	/**
	* Get last modified time.
	*
	* @return lastModified time value
	*/
	public long getLastModified() {
	if (lastModified != -1L)
	return lastModified;
	lastModified = jarEntry.getTime();
	return lastModified;
	}


	/**
	* Get lastModified date.
	*
	* @return LastModified date value
	*/
	public Date getLastModifiedDate() {
	if (lastModified == -1L) {
	lastModified = jarEntry.getTime();
	}
	return super.getLastModifiedDate();
	}


	/**
	* Get name.
	*
	* @return Name value
	*/
	public String getName() {
	if (name == null)
	name = jarEntry.getName();
	return name;
	}


	/**
	* Get resource type.
	*
	* @return String resource type
	*/
	public String getResourceType() {
	if (!accessed) {
	collection = jarEntry.isDirectory();
	accessed = true;
	}
	return super.getResourceType();
	}


	/**
	* Get canonical path.
	*
	* @return String the file's canonical path
	*/
	public String getCanonicalPath() {
	return null;
	}

	// ----------------------------------------- Serializables Methods

	private void readObject(ObjectInputStream ois) throws IOException {
	throw new UnsupportedOperationException();
	}

	private void writeObject(ObjectOutputStream oos) throws IOException {
	throw new UnsupportedOperationException();
	}
	}
	}