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*
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* and Distribution License("CDDL") (collectively, the "License"). You
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* obtain a copy of the License at
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*
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*
* 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
*
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package org.apache.naming.resources;
import java.text.MessageFormat;
import java.util.*;
import java.util.logging.*;
import java.io.File;
import java.io.InputStream;
import java.io.IOException;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
import java.util.zip.ZipException;
import javax.naming.Binding;
import javax.naming.Name;
import javax.naming.NameClassPair;
import javax.naming.NamingEnumeration;
import javax.naming.NamingException;
import javax.naming.CompositeName;
import javax.naming.OperationNotSupportedException;
import javax.naming.NameAlreadyBoundException;
import javax.naming.directory.DirContext;
import javax.naming.directory.Attributes;
import javax.naming.directory.ModificationItem;
import javax.naming.directory.SearchControls;
import javax.naming.directory.SearchResult;
import org.apache.naming.NamingEntry;
import org.apache.naming.NamingContextBindingsEnumeration;
import org.apache.naming.NamingContextEnumeration;
import org.glassfish.logging.annotation.LogMessageInfo;
/**
* WAR Directory Context implementation.
*
* @author Remy Maucherat
* @version $Revision: 1.3 $ $Date: 2006/03/12 01:27:13 $
*/
public class WARDirContext extends BaseDirContext {
private static final Logger log = org.apache.naming.resources.FileDirContext.logger;
private static final ResourceBundle rb = log.getResourceBundle();
@LogMessageInfo(
message = "Exception closing WAR File {0}",
level = "WARNING")
private static final String EXCEPTION_CLOSING_WAR = "AS-WEB-NAMING-00026";
@LogMessageInfo(
message = "Doc base must point to a WAR file",
level = "INFO")
private static final String NOT_WAR = "AS-WEB-NAMING-00027";
@LogMessageInfo(
message = "Invalid or unreadable WAR file : {0}",
level = "INFO")
private static final String INVALID_WAR = "AS-WEB-NAMING-00028";
// ----------------------------------------------------------- Constructors
/**
* Builds a WAR directory context using the given environment.
*/
public WARDirContext() {
super();
}
/**
* Builds a WAR directory context using the given environment.
*/
public WARDirContext(Hashtable env) {
super(env);
}
/**
* Constructor used for returning fake subcontexts.
*/
protected WARDirContext(ZipFile base, Entry entries) {
this.base = base;
this.entries = entries;
}
// ----------------------------------------------------- Instance Variables
/**
* The WAR file.
*/
protected ZipFile base = null;
/**
* WAR entries.
*/
protected Entry entries = null;
// ------------------------------------------------------------- Properties
/**
* Set the document root.
*
* @param docBase The new document root
*
* @exception IllegalArgumentException if the specified value is not
* supported by this implementation
* @exception IllegalArgumentException if this would create a
* malformed URL
*/
public void setDocBase(String docBase) {
// Validate the format of the proposed document root
if (docBase == null)
throw new IllegalArgumentException
(rb.getString(FileDirContext.RESOURCES_NULL));
if (!(docBase.endsWith(".war")))
throw new IllegalArgumentException
(rb.getString(NOT_WAR));
// Calculate a File object referencing this document base directory
File base = new File(docBase);
// Validate that the document base is an existing directory
if (!base.exists() || !base.canRead() || base.isDirectory())
throw new IllegalArgumentException
(rb.getString(NOT_WAR));
try {
this.base = new ZipFile(base);
} catch (Exception e) {
throw new IllegalArgumentException
(MessageFormat.format(rb.getString(INVALID_WAR), e.getMessage()));
}
super.setDocBase(docBase);
loadEntries();
}
// --------------------------------------------------------- Public Methods
/**
* Release any resources allocated for this directory context.
*/
public void release() {
entries = null;
if (base != null) {
try {
base.close();
} catch (IOException e) {
String msg = MessageFormat.format(EXCEPTION_CLOSING_WAR, base.getName());
log.log(Level.WARNING, msg, e);
}
}
base = 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
*/
public Object lookup(String name)
throws NamingException {
return lookup(new CompositeName(name));
}
/**
* Retrieves the named object. If name is empty, returns a new instance
* of this context (which represents the same naming context as this
* context, but its environment may be modified independently and it may
* be accessed concurrently).
*
* @param name the name of the object to look up
* @return the object bound to name
* @exception NamingException if a naming exception is encountered
*/
public Object lookup(Name name)
throws NamingException {
if (name.isEmpty())
return this;
Entry entry = treeLookup(name);
if (entry == null)
throw new NamingException
(MessageFormat.format(rb.getString(FileDirContext.RESOURCES_NOT_FOUND), name));
ZipEntry zipEntry = entry.getEntry();
if (zipEntry.isDirectory())
return new WARDirContext(base, entry);
else
return new WARResource(entry.getEntry());
}
/**
* Unbinds the named object. Removes the terminal atomic name in name
* from the target context--that named by all but the terminal atomic
* part of name.
*
* This method is idempotent. It succeeds even if the terminal atomic
* name is not bound in the target context, but throws
* NameNotFoundException if any of the intermediate contexts do not exist.
*
* @param name the name to bind; may not be empty
* @exception NameNotFoundException if an intermediate context does not
* exist
* @exception NamingException if a naming exception is encountered
*/
public void unbind(String name)
throws NamingException {
throw new OperationNotSupportedException();
}
/**
* Binds a new name to the object bound to an old name, and unbinds the
* old name. Both names are relative to this context. Any attributes
* associated with the old name become associated with the new name.
* Intermediate contexts of the old name are not changed.
*
* @param oldName the name of the existing binding; may not be empty
* @param newName the name of the new binding; may not be empty
* @exception NameAlreadyBoundException if newName is already bound
* @exception NamingException if a naming exception is encountered
*/
public void rename(String oldName, String newName)
throws NamingException {
throw new OperationNotSupportedException();
}
/**
* 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.
*
* 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
*/
public NamingEnumeration list(String name)
throws NamingException {
return list(new CompositeName(name));
}
/**
* 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.
*
* 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
*/
public NamingEnumeration list(Name name)
throws NamingException {
if (name.isEmpty())
return new NamingContextEnumeration(list(entries).iterator());
Entry entry = treeLookup(name);
if (entry == null)
throw new NamingException
(MessageFormat.format(rb.getString(FileDirContext.RESOURCES_NOT_FOUND), name));
return new NamingContextEnumeration(list(entry).iterator());
}
/**
* Enumerates the names bound in the named context, along with the
* objects bound to them. The contents of any subcontexts are not
* included.
*
* 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
*/
public NamingEnumeration listBindings(String name)
throws NamingException {
return listBindings(new CompositeName(name));
}
/**
* Enumerates the names bound in the named context, along with the
* objects bound to them. The contents of any subcontexts are not
* included.
*
* 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
*/
public NamingEnumeration listBindings(Name name)
throws NamingException {
if (name.isEmpty())
return new NamingContextBindingsEnumeration(list(entries).iterator(), this);
Entry entry = treeLookup(name);
if (entry == null)
throw new NamingException
(MessageFormat.format(rb.getString(FileDirContext.RESOURCES_NOT_FOUND), name));
return new NamingContextBindingsEnumeration(list(entry).iterator(), this);
}
/**
* Destroys the named context and removes it from the namespace. Any
* attributes associated with the name are also removed. Intermediate
* contexts are not destroyed.
*
* This method is idempotent. It succeeds even if the terminal atomic
* name is not bound in the target context, but throws
* NameNotFoundException if any of the intermediate contexts do not exist.
*
* In a federated naming system, a context from one naming system may be
* bound to a name in another. One can subsequently look up and perform
* operations on the foreign context using a composite name. However, an
* attempt destroy the context using this composite name will fail with
* NotContextException, because the foreign context is not a "subcontext"
* of the context in which it is bound. Instead, use unbind() to remove
* the binding of the foreign context. Destroying the foreign context
* requires that the destroySubcontext() be performed on a context from
* the foreign context's "native" naming system.
*
* @param name the name of the context to be destroyed; may not be empty
* @exception NameNotFoundException if an intermediate context does not
* exist
* @exception NotContextException if the name is bound but does not name
* a context, or does not name a context of the appropriate type
*/
public void destroySubcontext(String name)
throws NamingException {
throw new OperationNotSupportedException();
}
/**
* Retrieves the named object, following links except for the terminal
* atomic component of the name. If the object bound to name is not a
* link, returns the object itself.
*
* @param name the name of the object to look up
* @return the object bound to name, not following the terminal link
* (if any).
* @exception NamingException if a naming exception is encountered
*/
public Object lookupLink(String name)
throws NamingException {
// Note : Links are not supported
return lookup(name);
}
/**
* Retrieves the full name of this context within its own namespace.
*
* Many naming services have a notion of a "full name" for objects in
* their respective namespaces. For example, an LDAP entry has a
* distinguished name, and a DNS record has a fully qualified name. This
* method allows the client application to retrieve this name. The string
* returned by this method is not a JNDI composite name and should not be
* passed directly to context methods. In naming systems for which the
* notion of full name does not make sense,
* OperationNotSupportedException is thrown.
*
* @return this context's name in its own namespace; never null
* @exception OperationNotSupportedException if the naming system does
* not have the notion of a full name
* @exception NamingException if a naming exception is encountered
*/
public String getNameInNamespace()
throws NamingException {
return docBase;
}
// ----------------------------------------------------- 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
*/
public Attributes getAttributes(String name, String[] attrIds)
throws NamingException {
return getAttributes(new CompositeName(name), attrIds);
}
/**
* Retrieves all of the attributes associated with a named object.
*
* @return the set of attributes associated with name.
* Returns an empty attribute set if name has no attributes; never null.
* @param name the name of the object from which to retrieve attributes
* @exception NamingException if a naming exception is encountered
*/
public Attributes getAttributes(Name name, String[] attrIds)
throws NamingException {
Entry entry = null;
if (name.isEmpty())
entry = entries;
else
entry = treeLookup(name);
if (entry == null)
throw new NamingException
(MessageFormat.format(rb.getString(FileDirContext.RESOURCES_NOT_FOUND), name));
ZipEntry zipEntry = entry.getEntry();
ResourceAttributes attrs = new ResourceAttributes();
attrs.setCreationDate(new Date(zipEntry.getTime()));
attrs.setName(entry.getName());
if (!zipEntry.isDirectory())
attrs.setResourceType("");
attrs.setContentLength(zipEntry.getSize());
attrs.setLastModified(new Date(zipEntry.getTime()));
return attrs;
}
/**
* Modifies the attributes associated with a named object. The order of
* the modifications is not specified. Where possible, the modifications
* are performed atomically.
*
* @param name the name of the object whose attributes will be updated
* @param mod_op the modification operation, one of: ADD_ATTRIBUTE,
* REPLACE_ATTRIBUTE, REMOVE_ATTRIBUTE
* @param attrs the attributes to be used for the modification; may not
* be null
* @exception AttributeModificationException if the modification cannot be
* completed successfully
* @exception NamingException if a naming exception is encountered
*/
public void modifyAttributes(String name, int mod_op, Attributes attrs)
throws NamingException {
throw new OperationNotSupportedException();
}
/**
* Modifies the attributes associated with a named object using an an
* ordered list of modifications. The modifications are performed in the
* order specified. Each modification specifies a modification operation
* code and an attribute on which to operate. Where possible, the
* modifications are performed atomically.
*
* @param name the name of the object whose attributes will be updated
* @param mods an ordered sequence of modifications to be performed; may
* not be null
* @exception AttributeModificationException if the modification cannot be
* completed successfully
* @exception NamingException if a naming exception is encountered
*/
public void modifyAttributes(String name, ModificationItem[] mods)
throws NamingException {
throw new OperationNotSupportedException();
}
/**
* Binds a name to an object, along with associated attributes. If attrs
* is null, the resulting binding will have the attributes associated
* with obj if obj is a DirContext, and no attributes otherwise. If attrs
* is non-null, the resulting binding will have attrs as its attributes;
* any attributes associated with obj are ignored.
*
* @param name the name to bind; may not be empty
* @param obj the object to bind; possibly null
* @param attrs the attributes to associate with the binding
* @exception NameAlreadyBoundException if name is already bound
* @exception InvalidAttributesException if some "mandatory" attributes
* of the binding are not supplied
* @exception NamingException if a naming exception is encountered
*/
public void bind(String name, Object obj, Attributes attrs)
throws NamingException {
throw new OperationNotSupportedException();
}
/**
* Binds a name to an object, along with associated attributes,
* overwriting any existing binding. If attrs is null and obj is a
* DirContext, the attributes from obj are used. If attrs is null and obj
* is not a DirContext, any existing attributes associated with the object
* already bound in the directory remain unchanged. If attrs is non-null,
* any existing attributes associated with the object already bound in
* the directory are removed and attrs is associated with the named
* object. If obj is a DirContext and attrs is non-null, the attributes
* of obj are ignored.
*
* @param name the name to bind; may not be empty
* @param obj the object to bind; possibly null
* @param attrs the attributes to associate with the binding
* @exception InvalidAttributesException if some "mandatory" attributes
* of the binding are not supplied
* @exception NamingException if a naming exception is encountered
*/
public void rebind(String name, Object obj, Attributes attrs)
throws NamingException {
throw new OperationNotSupportedException();
}
/**
* Creates and binds a new context, along with associated attributes.
* This method creates a new subcontext with the given name, binds it in
* the target context (that named by all but terminal atomic component of
* the name), and associates the supplied attributes with the newly
* created object. All intermediate and target contexts must already
* exist. If attrs is null, this method is equivalent to
* Context.createSubcontext().
*
* @param name the name of the context to create; may not be empty
* @param attrs the attributes to associate with the newly created context
* @return the newly created context
* @exception NameAlreadyBoundException if the name is already bound
* @exception InvalidAttributesException if attrs does not contain all
* the mandatory attributes required for creation
* @exception NamingException if a naming exception is encountered
*/
public DirContext createSubcontext(String name, Attributes attrs)
throws NamingException {
throw new OperationNotSupportedException();
}
/**
* Retrieves the schema associated with the named object. The schema
* describes rules regarding the structure of the namespace and the
* attributes stored within it. The schema specifies what types of
* objects can be added to the directory and where they can be added;
* what mandatory and optional attributes an object can have. The range
* of support for schemas is directory-specific.
*
* @param name the name of the object whose schema is to be retrieved
* @return the schema associated with the context; never null
* @exception OperationNotSupportedException if schema not supported
* @exception NamingException if a naming exception is encountered
*/
public DirContext getSchema(String name)
throws NamingException {
throw new OperationNotSupportedException();
}
/**
* Retrieves a context containing the schema objects of the named
* object's class definitions.
*
* @param name the name of the object whose object class definition is to
* be retrieved
* @return the DirContext containing the named object's class
* definitions; never null
* @exception OperationNotSupportedException if schema not supported
* @exception NamingException if a naming exception is encountered
*/
public DirContext getSchemaClassDefinition(String name)
throws NamingException {
throw new OperationNotSupportedException();
}
/**
* Searches in a single context for objects that contain a specified set
* of attributes, and retrieves selected attributes. The search is
* performed using the default SearchControls settings.
*
* @param name the name of the context to search
* @param matchingAttributes the attributes to search for. If empty or
* null, all objects in the target context are returned.
* @param attributesToReturn the attributes to return. null indicates
* that all attributes are to be returned; an empty array indicates that
* none are to be returned.
* @return a non-null enumeration of SearchResult objects. Each
* SearchResult contains the attributes identified by attributesToReturn
* and the name of the corresponding object, named relative to the
* context named by name.
* @exception NamingException if a naming exception is encountered
*/
public NamingEnumeration search(String name,
Attributes matchingAttributes, String[] attributesToReturn)
throws NamingException {
throw new OperationNotSupportedException();
}
/**
* Searches in a single context for objects that contain a specified set
* of attributes. This method returns all the attributes of such objects.
* It is equivalent to supplying null as the atributesToReturn parameter
* to the method search(Name, Attributes, String[]).
*
* @param name the name of the context to search
* @param matchingAttributes the attributes to search for. If empty or
* null, all objects in the target context are returned.
* @return a non-null enumeration of SearchResult objects. Each
* SearchResult contains the attributes identified by attributesToReturn
* and the name of the corresponding object, named relative to the
* context named by name.
* @exception NamingException if a naming exception is encountered
*/
public NamingEnumeration search(String name,
Attributes matchingAttributes) throws NamingException {
throw new OperationNotSupportedException();
}
/**
* Searches in the named context or object for entries that satisfy the
* given search filter. Performs the search as specified by the search
* controls.
*
* @param name the name of the context or object to search
* @param filter the filter expression to use for the search; may not be
* null
* @param cons the search controls that control the search. If null,
* the default search controls are used (equivalent to
* (new SearchControls())).
* @return an enumeration of SearchResults of the objects that satisfy
* the filter; never null
* @exception InvalidSearchFilterException if the search filter specified
* is not supported or understood by the underlying directory
* @exception InvalidSearchControlsException if the search controls
* contain invalid settings
* @exception NamingException if a naming exception is encountered
*/
public NamingEnumeration search(String name, String filter,
SearchControls cons)
throws NamingException {
throw new OperationNotSupportedException();
}
/**
* Searches in the named context or object for entries that satisfy the
* given search filter. Performs the search as specified by the search
* controls.
*
* @param name the name of the context or object to search
* @param filterExpr the filter expression to use for the search.
* The expression may contain variables of the form "{i}" where i is a
* nonnegative integer. May not be null.
* @param filterArgs the array of arguments to substitute for the
* variables in filterExpr. The value of filterArgs[i] will replace each
* occurrence of "{i}". If null, equivalent to an empty array.
* @param cons the search controls that control the search. If null, the
* default search controls are used (equivalent to (new SearchControls())).
* @return an enumeration of SearchResults of the objects that satisy the
* filter; never null
* @exception ArrayIndexOutOfBoundsException if filterExpr contains {i}
* expressions where i is outside the bounds of the array filterArgs
* @exception InvalidSearchControlsException if cons contains invalid
* settings
* @exception InvalidSearchFilterException if filterExpr with filterArgs
* represents an invalid search filter
* @exception NamingException if a naming exception is encountered
*/
public NamingEnumeration search(String name, String filterExpr,
Object[] filterArgs, SearchControls cons)
throws NamingException {
throw new OperationNotSupportedException();
}
// ------------------------------------------------------ Protected Methods
/**
* Normalize the name of an entry read from the Zip.
*/
protected String normalize(ZipEntry entry) {
String result = "/" + entry.getName();
if (entry.isDirectory()) {
result = result.substring(0, result.length() - 1);
}
return result;
}
/**
* Constructs a tree of the entries contained in a WAR file.
*/
protected void loadEntries() {
try {
Enumeration entryList = base.entries();
entries = new Entry("/", new ZipEntry("/"));
while (entryList.hasMoreElements()) {
ZipEntry entry = entryList.nextElement();
String name = normalize(entry);
int pos = name.lastIndexOf('/');
// Check that parent entries exist and, if not, create them.
// This fixes a bug for war files that don't record separate
// zip entries for the directories.
int currentPos = -1;
int lastPos = 0;
while ((currentPos = name.indexOf('/', lastPos)) != -1) {
Name parentName = new CompositeName(name.substring(0, lastPos));
Name childName = new CompositeName(name.substring(0, currentPos));
String entryName = name.substring(lastPos, currentPos);
// Parent should have been created in last cycle through
// this loop
Entry parent = treeLookup(parentName);
Entry child = treeLookup(childName);
if (child == null) {
// Create a new entry for missing entry and strip off
// the leading '/' character and appended on by the
// normalize method and add '/' character to end to
// signify that it is a directory entry
String zipName = name.substring(1, currentPos) + "/";
child = new Entry(entryName, new ZipEntry(zipName));
if (parent != null)
parent.addChild(child);
}
// Increment lastPos
lastPos = currentPos + 1;
}
String entryName = name.substring(pos + 1, name.length());
Name compositeName = new CompositeName(name.substring(0, pos));
Entry parent = treeLookup(compositeName);
Entry child = new Entry(entryName, entry);
if (parent != null)
parent.addChild(child);
}
} catch (Exception e) {
}
}
/**
* Entry tree lookup.
*/
protected Entry treeLookup(Name name) {
if (name.isEmpty() || entries == null)
return entries;
Entry currentEntry = entries;
for (int i = 0; i < name.size(); i++) {
if (name.get(i).length() == 0)
continue;
currentEntry = currentEntry.getChild(name.get(i));
if (currentEntry == null)
return null;
}
return currentEntry;
}
/**
* List children as objects.
*/
protected ArrayList list(Entry entry) {
ArrayList entries = new ArrayList();
Entry[] children = entry.getChildren();
Arrays.sort(children);
NamingEntry namingEntry = null;
for (int i = 0; i < children.length; i++) {
ZipEntry current = children[i].getEntry();
Object object = null;
if (current.isDirectory()) {
object = new WARDirContext(base, children[i]);
} else {
object = new WARResource(current);
}
namingEntry = new NamingEntry
(children[i].getName(), object, NamingEntry.ENTRY);
entries.add(namingEntry);
}
return entries;
}
// ---------------------------------------------------- Entries Inner Class
/**
* Entries structure.
*/
protected static class Entry implements Comparable