1 /*
   2  * Copyright (c) 2000, 2004, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package com.sun.corba.se.impl.io;
  27 
  28 import java.security.AccessController;
  29 import java.security.PrivilegedExceptionAction;
  30 import java.security.PrivilegedActionException;
  31 import java.security.PrivilegedAction;
  32 
  33 import java.lang.reflect.Modifier;
  34 import java.lang.reflect.Array;
  35 import java.lang.reflect.Field;
  36 import java.lang.reflect.Member;
  37 import java.lang.reflect.Method;
  38 
  39 
  40 // This file contains some utility methods that
  41 // originally were in the OSC in the RMI-IIOP
  42 // code delivered by IBM.  They don't make
  43 // sense there, and hence have been put
  44 // here so that they can be factored out in
  45 // an attempt to eliminate redundant code from
  46 // ObjectStreamClass.  Eventually the goal is
  47 // to move to java.io.ObjectStreamClass, and
  48 // java.io.ObjectStreamField.
  49 
  50 // class is package private for security reasons
  51 
  52 class ObjectStreamClassCorbaExt {
  53 
  54     /**
  55      * Return true, iff,
  56      *
  57      * 1. 'cl' is an interface, and
  58      * 2. 'cl' and all its ancestors do not implement java.rmi.Remote, and
  59      * 3. if 'cl' has no methods (including those of its ancestors), or,
  60      *    if all the methods (including those of its ancestors) throw an
  61      *    exception that is atleast java.rmi.RemoteException or one of
  62      *    java.rmi.RemoteException's super classes.
  63      */
  64     static final boolean isAbstractInterface(Class cl) {
  65         if (!cl.isInterface() || // #1
  66                 java.rmi.Remote.class.isAssignableFrom(cl)) { // #2
  67             return false;
  68         }
  69         Method[] methods = cl.getMethods();
  70         for (int i = 0; i < methods.length; i++) {
  71             Class exceptions[] = methods[i].getExceptionTypes();
  72             boolean exceptionMatch = false;
  73             for (int j = 0; (j < exceptions.length) && !exceptionMatch; j++) {
  74                 if ((java.rmi.RemoteException.class == exceptions[j]) ||
  75                     (java.lang.Throwable.class == exceptions[j]) ||
  76                     (java.lang.Exception.class == exceptions[j]) ||
  77                     (java.io.IOException.class == exceptions[j])) {
  78                     exceptionMatch = true;
  79                 }
  80             }
  81             if (!exceptionMatch) {
  82                 return false;
  83             }
  84         }
  85         return true;
  86     }
  87 
  88     /*
  89      *  Returns TRUE if type is 'any'.
  90      */
  91     static final boolean isAny(String typeString) {
  92 
  93         int isAny = 0;
  94 
  95         if ( (typeString != null) &&
  96             (typeString.equals("Ljava/lang/Object;") ||
  97              typeString.equals("Ljava/io/Serializable;") ||
  98              typeString.equals("Ljava/io/Externalizable;")) )
  99                 isAny = 1;
 100 
 101         return (isAny==1);
 102     }
 103 
 104     private static final Method[] getDeclaredMethods(final Class clz) {
 105         return (Method[]) AccessController.doPrivileged(new PrivilegedAction() {
 106             public Object run() {
 107                 return clz.getDeclaredMethods();
 108             }
 109         });
 110     }
 111 
 112 }