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8290368: Introduce LDAP and RMI protocol-specific object factory filters to JNDI implementation

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Reviewed-by: dfuchs, rriggs, jpai
This commit is contained in:
Aleksei Efimov 2022-10-19 14:41:28 +00:00
parent 21aeb9e794
commit d37ce4cdd1
22 changed files with 1263 additions and 355 deletions
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230
src/java.naming/share/classes/javax/naming/spi/NamingManager.java
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@ -1,5 +1,5 @@
/*
* Copyright (c) 1999, 2021, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 1999, 2022, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@ -25,13 +25,13 @@
package javax.naming.spi;
import java.net.MalformedURLException;
import java.security.AccessController;
import java.security.PrivilegedAction;
import java.util.*;
import javax.naming.*;
import com.sun.naming.internal.NamingManagerHelper;
import com.sun.naming.internal.ObjectFactoriesFilter;
import com.sun.naming.internal.VersionHelper;
import com.sun.naming.internal.ResourceManager;
@ -78,11 +78,6 @@ public class NamingManager {
// --------- object factory stuff
/**
* Package-private; used by DirectoryManager and NamingManager.
*/
private static ObjectFactoryBuilder object_factory_builder = null;
private static final ClassLoaderValue<InitialContextFactory> FACTORIES_CACHE =
new ClassLoaderValue<>();
@ -111,110 +106,16 @@ public class NamingManager {
* @see ObjectFactoryBuilder
* @see java.lang.SecurityManager#checkSetFactory
*/
public static synchronized void setObjectFactoryBuilder(
public static void setObjectFactoryBuilder(
ObjectFactoryBuilder builder) throws NamingException {
if (object_factory_builder != null)
throw new IllegalStateException("ObjectFactoryBuilder already set");
@SuppressWarnings("removal")
SecurityManager security = System.getSecurityManager();
if (security != null) {
security.checkSetFactory();
}
object_factory_builder = builder;
NamingManagerHelper.setObjectFactoryBuilder(builder);
}
/**
* Used for accessing object factory builder.
*/
static synchronized ObjectFactoryBuilder getObjectFactoryBuilder() {
return object_factory_builder;
}
/**
* Retrieves the ObjectFactory for the object identified by a reference,
* using the reference's factory class name and factory codebase
* to load in the factory's class.
* @param ref The non-null reference to use.
* @param factoryName The non-null class name of the factory.
* @return The object factory for the object identified by ref; null
* if unable to load the factory.
*/
static ObjectFactory getObjectFactoryFromReference(
Reference ref, String factoryName)
throws IllegalAccessException,
InstantiationException,
MalformedURLException {
Class<?> clas = null;
// Try to use current class loader
try {
clas = helper.loadClassWithoutInit(factoryName);
// Validate factory's class with the objects factory serial filter
if (!ObjectFactoriesFilter.canInstantiateObjectsFactory(clas)) {
return null;
}
} catch (ClassNotFoundException e) {
// ignore and continue
// e.printStackTrace();
}
// All other exceptions are passed up.
// Not in class path; try to use codebase
String codebase;
if (clas == null &&
(codebase = ref.getFactoryClassLocation()) != null) {
try {
clas = helper.loadClass(factoryName, codebase);
// Validate factory's class with the objects factory serial filter
if (clas == null ||
!ObjectFactoriesFilter.canInstantiateObjectsFactory(clas)) {
return null;
}
} catch (ClassNotFoundException e) {
}
}
@SuppressWarnings("deprecation") // Class.newInstance
ObjectFactory result = (clas != null) ? (ObjectFactory) clas.newInstance() : null;
return result;
}
/**
* Creates an object using the factories specified in the
* {@code Context.OBJECT_FACTORIES} property of the environment
* or of the provider resource file associated with {@code nameCtx}.
*
* @return factory created; null if cannot create
*/
private static Object createObjectFromFactories(Object obj, Name name,
Context nameCtx, Hashtable<?,?> environment) throws Exception {
FactoryEnumeration factories = ResourceManager.getFactories(
Context.OBJECT_FACTORIES, environment, nameCtx);
if (factories == null)
return null;
// Try each factory until one succeeds
ObjectFactory factory;
Object answer = null;
while (answer == null && factories.hasMore()) {
factory = (ObjectFactory)factories.next();
answer = factory.getObjectInstance(obj, name, nameCtx, environment);
}
return answer;
}
private static String getURLScheme(String str) {
int colon_posn = str.indexOf(':');
int slash_posn = str.indexOf('/');
if (colon_posn > 0 && (slash_posn == -1 || colon_posn < slash_posn))
return str.substring(0, colon_posn);
return null;
static ObjectFactoryBuilder getObjectFactoryBuilder() {
return NamingManagerHelper.getObjectFactoryBuilder();
}
/**
@ -308,124 +209,11 @@ public class NamingManager {
public static Object
getObjectInstance(Object refInfo, Name name, Context nameCtx,
Hashtable<?,?> environment)
throws Exception
{
ObjectFactory factory;
// Use builder if installed
ObjectFactoryBuilder builder = getObjectFactoryBuilder();
if (builder != null) {
// builder must return non-null factory
factory = builder.createObjectFactory(refInfo, environment);
return factory.getObjectInstance(refInfo, name, nameCtx,
environment);
}
// Use reference if possible
Reference ref = null;
if (refInfo instanceof Reference) {
ref = (Reference) refInfo;
} else if (refInfo instanceof Referenceable) {
ref = ((Referenceable)(refInfo)).getReference();
}
Object answer;
if (ref != null) {
String f = ref.getFactoryClassName();
if (f != null) {
// if reference identifies a factory, use exclusively
factory = getObjectFactoryFromReference(ref, f);
if (factory != null) {
return factory.getObjectInstance(ref, name, nameCtx,
environment);
}
// No factory found, so return original refInfo.
// Will reach this point if factory class is not in
// class path and reference does not contain a URL for it
return refInfo;
} else {
// if reference has no factory, check for addresses
// containing URLs
answer = processURLAddrs(ref, name, nameCtx, environment);
if (answer != null) {
return answer;
}
}
}
// try using any specified factories
answer =
createObjectFromFactories(refInfo, name, nameCtx, environment);
return (answer != null) ? answer : refInfo;
throws Exception {
return NamingManagerHelper.getObjectInstance(refInfo, name, nameCtx,
environment, ObjectFactoriesFilter::checkGlobalFilter);
}
/*
* Ref has no factory. For each address of type "URL", try its URL
* context factory. Returns null if unsuccessful in creating and
* invoking a factory.
*/
static Object processURLAddrs(Reference ref, Name name, Context nameCtx,
Hashtable<?,?> environment)
throws NamingException {
for (int i = 0; i < ref.size(); i++) {
RefAddr addr = ref.get(i);
if (addr instanceof StringRefAddr &&
addr.getType().equalsIgnoreCase("URL")) {
String url = (String)addr.getContent();
Object answer = processURL(url, name, nameCtx, environment);
if (answer != null) {
return answer;
}
}
}
return null;
}
private static Object processURL(Object refInfo, Name name,
Context nameCtx, Hashtable<?,?> environment)
throws NamingException {
Object answer;
// If refInfo is a URL string, try to use its URL context factory
// If no context found, continue to try object factories.
if (refInfo instanceof String) {
String url = (String)refInfo;
String scheme = getURLScheme(url);
if (scheme != null) {
answer = getURLObject(scheme, refInfo, name, nameCtx,
environment);
if (answer != null) {
return answer;
}
}
}
// If refInfo is an array of URL strings,
// try to find a context factory for any one of its URLs.
// If no context found, continue to try object factories.
if (refInfo instanceof String[]) {
String[] urls = (String[])refInfo;
for (int i = 0; i <urls.length; i++) {
String scheme = getURLScheme(urls[i]);
if (scheme != null) {
answer = getURLObject(scheme, refInfo, name, nameCtx,
environment);
if (answer != null)
return answer;
}
}
}
return null;
}
/**
* Retrieves a context identified by {@code obj}, using the specified
* environment.