|
|
|
@@ -38,14 +38,10 @@ exception statement from your version. */
|
|
|
|
|
|
|
|
|
|
package java.rmi.server;
|
|
|
|
|
|
|
|
|
|
import gnu.java.rmi.server.RMIClassLoaderImpl;
|
|
|
|
|
|
|
|
|
|
import java.net.MalformedURLException;
|
|
|
|
|
import java.net.URL;
|
|
|
|
|
import java.net.URLClassLoader;
|
|
|
|
|
import java.util.ArrayList;
|
|
|
|
|
import java.util.Hashtable;
|
|
|
|
|
import java.util.Map;
|
|
|
|
|
import java.util.StringTokenizer;
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* This class provides a set of public static utility methods for supporting
|
|
|
|
@@ -60,221 +56,77 @@ public class RMIClassLoader
|
|
|
|
|
*/
|
|
|
|
|
private RMIClassLoader() {}
|
|
|
|
|
|
|
|
|
|
private static class MyClassLoader extends URLClassLoader
|
|
|
|
|
{
|
|
|
|
|
// Package-private to avoid a trampoline constructor.
|
|
|
|
|
MyClassLoader (URL[] urls, ClassLoader parent, String annotation)
|
|
|
|
|
{
|
|
|
|
|
super (urls, parent);
|
|
|
|
|
this.annotation = annotation;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
private MyClassLoader (URL[] urls, ClassLoader parent)
|
|
|
|
|
{
|
|
|
|
|
super (urls, parent);
|
|
|
|
|
this.annotation = urlToAnnotation (urls);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
public static String urlToAnnotation (URL[] urls)
|
|
|
|
|
{
|
|
|
|
|
if (urls.length == 0)
|
|
|
|
|
return null;
|
|
|
|
|
|
|
|
|
|
StringBuffer annotation = new StringBuffer (64 * urls.length);
|
|
|
|
|
|
|
|
|
|
for (int i = 0; i < urls.length; i++)
|
|
|
|
|
{
|
|
|
|
|
annotation.append (urls [i].toExternalForm());
|
|
|
|
|
annotation.append (' ');
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return annotation.toString();
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
public final String getClassAnnotation()
|
|
|
|
|
{
|
|
|
|
|
return annotation;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
private final String annotation;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* This class is used to identify a cached classloader by its codebase and
|
|
|
|
|
* the context classloader that is its parent.
|
|
|
|
|
*/
|
|
|
|
|
private static class CacheKey
|
|
|
|
|
{
|
|
|
|
|
private String mCodeBase;
|
|
|
|
|
private ClassLoader mContextClassLoader;
|
|
|
|
|
|
|
|
|
|
public CacheKey (String theCodebase, ClassLoader theContextClassLoader)
|
|
|
|
|
{
|
|
|
|
|
mCodeBase = theCodebase;
|
|
|
|
|
mContextClassLoader = theContextClassLoader;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* @return true if the codebase and the context classloader are equal
|
|
|
|
|
*/
|
|
|
|
|
public boolean equals (Object theOther)
|
|
|
|
|
{
|
|
|
|
|
if (theOther instanceof CacheKey)
|
|
|
|
|
{
|
|
|
|
|
CacheKey key = (CacheKey) theOther;
|
|
|
|
|
|
|
|
|
|
return (equals (this.mCodeBase,key.mCodeBase)
|
|
|
|
|
&& equals (this.mContextClassLoader, key.mContextClassLoader));
|
|
|
|
|
}
|
|
|
|
|
return false;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* Test if the two objects are equal or both null.
|
|
|
|
|
* @param theOne
|
|
|
|
|
* @param theOther
|
|
|
|
|
* @return
|
|
|
|
|
*/
|
|
|
|
|
private boolean equals (Object theOne, Object theOther)
|
|
|
|
|
{
|
|
|
|
|
return theOne != null ? theOne.equals (theOther) : theOther == null;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* @return hashCode
|
|
|
|
|
*/
|
|
|
|
|
public int hashCode()
|
|
|
|
|
{
|
|
|
|
|
return ((mCodeBase != null ? mCodeBase.hashCode() : 0)
|
|
|
|
|
^(mContextClassLoader != null ? mContextClassLoader.hashCode() : -1));
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
public String toString()
|
|
|
|
|
{
|
|
|
|
|
return "[" + mCodeBase + "," + mContextClassLoader + "]";
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
private static Map cacheLoaders; //map annotations to loaders
|
|
|
|
|
private static Map cacheAnnotations; //map loaders to annotations
|
|
|
|
|
|
|
|
|
|
//defaultAnnotation is got from system property
|
|
|
|
|
// "java.rmi.server.defaultAnnotation"
|
|
|
|
|
private static String defaultAnnotation;
|
|
|
|
|
|
|
|
|
|
//URL object for defaultAnnotation
|
|
|
|
|
private static URL defaultCodebase;
|
|
|
|
|
|
|
|
|
|
//class loader for defaultAnnotation
|
|
|
|
|
private static MyClassLoader defaultLoader;
|
|
|
|
|
|
|
|
|
|
static
|
|
|
|
|
{
|
|
|
|
|
// 89 is a nice prime number for Hashtable initial capacity
|
|
|
|
|
cacheLoaders = new Hashtable (89);
|
|
|
|
|
cacheAnnotations = new Hashtable (89);
|
|
|
|
|
|
|
|
|
|
defaultAnnotation = System.getProperty ("java.rmi.server.defaultAnnotation");
|
|
|
|
|
|
|
|
|
|
try
|
|
|
|
|
{
|
|
|
|
|
if (defaultAnnotation != null)
|
|
|
|
|
defaultCodebase = new URL (defaultAnnotation);
|
|
|
|
|
}
|
|
|
|
|
catch (Exception _)
|
|
|
|
|
{
|
|
|
|
|
defaultCodebase = null;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (defaultCodebase != null)
|
|
|
|
|
{
|
|
|
|
|
defaultLoader = new MyClassLoader (new URL[] { defaultCodebase }, null,
|
|
|
|
|
defaultAnnotation);
|
|
|
|
|
cacheLoaders.put (new CacheKey (defaultAnnotation,
|
|
|
|
|
Thread.currentThread().getContextClassLoader()),
|
|
|
|
|
defaultLoader);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* @deprecated
|
|
|
|
|
*/
|
|
|
|
|
public static Class loadClass (String name)
|
|
|
|
|
public static Class loadClass(String name)
|
|
|
|
|
throws MalformedURLException, ClassNotFoundException
|
|
|
|
|
{
|
|
|
|
|
return loadClass ("", name);
|
|
|
|
|
return loadClass("", name);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
public static Class loadClass (String codebases, String name)
|
|
|
|
|
public static Class loadClass(String codebase, String name)
|
|
|
|
|
throws MalformedURLException, ClassNotFoundException
|
|
|
|
|
{
|
|
|
|
|
ClassLoader loader = Thread.currentThread().getContextClassLoader();
|
|
|
|
|
RMIClassLoaderSpi spi = getProviderInstance();
|
|
|
|
|
if (spi == null)
|
|
|
|
|
spi = getDefaultProviderInstance();
|
|
|
|
|
return spi.loadClass(codebase, name, null);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
//try context class loader first
|
|
|
|
|
try
|
|
|
|
|
{
|
|
|
|
|
return Class.forName(name, false, loader);
|
|
|
|
|
}
|
|
|
|
|
catch (ClassNotFoundException e)
|
|
|
|
|
{
|
|
|
|
|
// class not found in the local classpath
|
|
|
|
|
}
|
|
|
|
|
public static Class loadClass(String codebase, String name,
|
|
|
|
|
ClassLoader defaultLoader)
|
|
|
|
|
throws MalformedURLException, ClassNotFoundException
|
|
|
|
|
{
|
|
|
|
|
RMIClassLoaderSpi spi = getProviderInstance();
|
|
|
|
|
if (spi == null)
|
|
|
|
|
spi = getDefaultProviderInstance();
|
|
|
|
|
return spi.loadClass(codebase, name, defaultLoader);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (codebases.length() == 0) //==""
|
|
|
|
|
{
|
|
|
|
|
loader = defaultLoader;
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
loader = getClassLoader(codebases);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (loader == null)
|
|
|
|
|
{
|
|
|
|
|
//do not throw NullPointerException
|
|
|
|
|
throw new ClassNotFoundException ("Could not find class (" + name +
|
|
|
|
|
") at codebase (" + codebases + ")");
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return Class.forName(name, false, loader);
|
|
|
|
|
/**
|
|
|
|
|
* Loads a class from <code>codeBase</code>.
|
|
|
|
|
*
|
|
|
|
|
* This method delegates to
|
|
|
|
|
* {@link RMIClassLoaderSpi#loadClass(String, String, ClassLoader)} and
|
|
|
|
|
* passes <code>codeBase.toString()</code> as first argument,
|
|
|
|
|
* <code>name</code> as second argument and <code>null</code> as third
|
|
|
|
|
* argument.
|
|
|
|
|
*
|
|
|
|
|
* @param codeBase the code base from which to load the class
|
|
|
|
|
* @param name the name of the class
|
|
|
|
|
*
|
|
|
|
|
* @return the loaded class
|
|
|
|
|
*
|
|
|
|
|
* @throws MalformedURLException if the URL is not well formed
|
|
|
|
|
* @throws ClassNotFoundException if the requested class cannot be found
|
|
|
|
|
*/
|
|
|
|
|
public static Class loadClass(URL codeBase, String name)
|
|
|
|
|
throws MalformedURLException, ClassNotFoundException
|
|
|
|
|
{
|
|
|
|
|
RMIClassLoaderSpi spi = getProviderInstance();
|
|
|
|
|
if (spi == null)
|
|
|
|
|
spi = getDefaultProviderInstance();
|
|
|
|
|
return spi.loadClass(codeBase.toString(), name, null);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* Gets a classloader for the given codebase and with the current
|
|
|
|
|
* context classloader as parent.
|
|
|
|
|
*
|
|
|
|
|
* @param codebases
|
|
|
|
|
* @param codebase
|
|
|
|
|
*
|
|
|
|
|
* @return a classloader for the given codebase
|
|
|
|
|
*
|
|
|
|
|
* @throws MalformedURLException if the codebase contains a malformed URL
|
|
|
|
|
*/
|
|
|
|
|
public static ClassLoader getClassLoader (String codebases)
|
|
|
|
|
public static ClassLoader getClassLoader(String codebase)
|
|
|
|
|
throws MalformedURLException
|
|
|
|
|
{
|
|
|
|
|
ClassLoader loader;
|
|
|
|
|
CacheKey loaderKey = new CacheKey
|
|
|
|
|
(codebases, Thread.currentThread().getContextClassLoader());
|
|
|
|
|
loader = (ClassLoader) cacheLoaders.get (loaderKey);
|
|
|
|
|
|
|
|
|
|
if (loader == null)
|
|
|
|
|
{
|
|
|
|
|
//create an entry in cacheLoaders mapping a loader to codebases.
|
|
|
|
|
// codebases are separated by " "
|
|
|
|
|
StringTokenizer tok = new StringTokenizer (codebases, " ");
|
|
|
|
|
ArrayList urls = new ArrayList();
|
|
|
|
|
|
|
|
|
|
while (tok.hasMoreTokens())
|
|
|
|
|
urls.add (new URL (tok.nextToken()));
|
|
|
|
|
|
|
|
|
|
loader = new MyClassLoader ((URL[]) urls.toArray (new URL [urls.size()]),
|
|
|
|
|
Thread.currentThread().getContextClassLoader(),
|
|
|
|
|
codebases);
|
|
|
|
|
cacheLoaders.put (loaderKey, loader);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return loader;
|
|
|
|
|
RMIClassLoaderSpi spi = getProviderInstance();
|
|
|
|
|
if (spi == null)
|
|
|
|
|
spi = getDefaultProviderInstance();
|
|
|
|
|
return spi.getClassLoader(codebase);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
@@ -286,47 +138,12 @@ public class RMIClassLoader
|
|
|
|
|
* @return a space seperated list of URLs where the class-definition
|
|
|
|
|
* of cl may be found
|
|
|
|
|
*/
|
|
|
|
|
public static String getClassAnnotation (Class cl)
|
|
|
|
|
public static String getClassAnnotation(Class cl)
|
|
|
|
|
{
|
|
|
|
|
ClassLoader loader = cl.getClassLoader();
|
|
|
|
|
|
|
|
|
|
if (loader == null
|
|
|
|
|
|| loader == ClassLoader.getSystemClassLoader())
|
|
|
|
|
{
|
|
|
|
|
return System.getProperty ("java.rmi.server.codebase");
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (loader instanceof MyClassLoader)
|
|
|
|
|
{
|
|
|
|
|
return ((MyClassLoader) loader).getClassAnnotation();
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
String s = (String) cacheAnnotations.get (loader);
|
|
|
|
|
|
|
|
|
|
if (s != null)
|
|
|
|
|
return s;
|
|
|
|
|
|
|
|
|
|
if (loader instanceof URLClassLoader)
|
|
|
|
|
{
|
|
|
|
|
URL[] urls = ((URLClassLoader) loader).getURLs();
|
|
|
|
|
|
|
|
|
|
if (urls.length == 0)
|
|
|
|
|
return null;
|
|
|
|
|
|
|
|
|
|
StringBuffer annotation = new StringBuffer (64 * urls.length);
|
|
|
|
|
|
|
|
|
|
for (int i = 0; i < urls.length; i++)
|
|
|
|
|
{
|
|
|
|
|
annotation.append (urls [i].toExternalForm());
|
|
|
|
|
annotation.append (' ');
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
s = annotation.toString();
|
|
|
|
|
cacheAnnotations.put (loader, s);
|
|
|
|
|
return s;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return System.getProperty ("java.rmi.server.codebase");
|
|
|
|
|
RMIClassLoaderSpi spi = getProviderInstance();
|
|
|
|
|
if (spi == null)
|
|
|
|
|
spi = getDefaultProviderInstance();
|
|
|
|
|
return spi.getClassAnnotation(cl);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
@@ -336,4 +153,25 @@ public class RMIClassLoader
|
|
|
|
|
{
|
|
|
|
|
throw new Error ("Not implemented");
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* Returns the default service provider for <code>RMIClassLoader</code>.
|
|
|
|
|
*
|
|
|
|
|
* @return the default provider for <code>RMIClassLoader</code>
|
|
|
|
|
*/
|
|
|
|
|
public static RMIClassLoaderSpi getDefaultProviderInstance()
|
|
|
|
|
{
|
|
|
|
|
return RMIClassLoaderImpl.getInstance();
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* Chooses, instantiates and returns a service provider.
|
|
|
|
|
*
|
|
|
|
|
* @return a service provider
|
|
|
|
|
*/
|
|
|
|
|
private static RMIClassLoaderSpi getProviderInstance()
|
|
|
|
|
{
|
|
|
|
|
// TODO: Do something more useful here.
|
|
|
|
|
return null;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|