public static SnapshotMBeanServerConnection newSnapshot(MBeanServerConnection mbsc) {
final InvocationHandler ih = new SnapshotInvocationHandler(mbsc);
return (SnapshotMBeanServerConnection)
Proxy.newProxyInstance(
Snapshot.class.getClassLoader(),
new Class[] {SnapshotMBeanServerConnection.class},
ih);
}
private static void checkStub(Remote stub, Class<? extends Remote> stubClass) {
// Check remote stub is from the expected class.
//
if (stub.getClass() != stubClass) {
if (!Proxy.isProxyClass(stub.getClass())) {
throw new SecurityException("Expecting a " + stubClass.getName() + " stub!");
} else {
InvocationHandler handler = Proxy.getInvocationHandler(stub);
if (handler.getClass() != RemoteObjectInvocationHandler.class) {
throw new SecurityException(
"Expecting a dynamic proxy instance with a "
+ RemoteObjectInvocationHandler.class.getName()
+ " invocation handler!");
} else {
stub = (Remote) handler;
}
}
}
// Check RemoteRef in stub is from the expected class
// "sun.rmi.server.UnicastRef2".
//
RemoteRef ref = ((RemoteObject) stub).getRef();
if (ref.getClass() != UnicastRef2.class) {
throw new SecurityException(
"Expecting a " + UnicastRef2.class.getName() + " remote reference in stub!");
}
// Check RMIClientSocketFactory in stub is from the expected class
// "javax.rmi.ssl.SslRMIClientSocketFactory".
//
LiveRef liveRef = ((UnicastRef2) ref).getLiveRef();
RMIClientSocketFactory csf = liveRef.getClientSocketFactory();
if (csf == null || csf.getClass() != SslRMIClientSocketFactory.class) {
throw new SecurityException(
"Expecting a "
+ SslRMIClientSocketFactory.class.getName()
+ " RMI client socket factory in stub!");
}
}