1 /*
   2  * Copyright (c) 2003, 2006, 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.presentation.rmi ;
  27 
  28 import java.security.AccessController;
  29 import java.security.PrivilegedAction;
  30 
  31 import java.lang.reflect.Method ;
  32 import java.lang.reflect.InvocationHandler ;
  33 import java.lang.reflect.Proxy ;
  34 import java.lang.reflect.InvocationTargetException ;
  35 
  36 import java.io.ObjectInputStream ;
  37 import java.io.ObjectOutputStream ;
  38 import java.io.IOException ;
  39 
  40 import java.rmi.Remote ;
  41 
  42 import javax.rmi.CORBA.Util ;
  43 
  44 import org.omg.CORBA.portable.ObjectImpl ;
  45 import org.omg.CORBA.portable.Delegate ;
  46 import org.omg.CORBA.portable.ServantObject ;
  47 import org.omg.CORBA.portable.ApplicationException ;
  48 import org.omg.CORBA.portable.RemarshalException ;
  49 
  50 import org.omg.CORBA.SystemException ;
  51 
  52 import com.sun.corba.se.spi.orb.ORB ;
  53 
  54 import com.sun.corba.se.pept.transport.ContactInfoList ;
  55 
  56 import com.sun.corba.se.spi.transport.CorbaContactInfoList ;
  57 
  58 import com.sun.corba.se.spi.protocol.CorbaClientDelegate ;
  59 import com.sun.corba.se.spi.protocol.LocalClientRequestDispatcher ;
  60 
  61 import com.sun.corba.se.spi.presentation.rmi.IDLNameTranslator ;
  62 import com.sun.corba.se.spi.presentation.rmi.DynamicMethodMarshaller ;
  63 import com.sun.corba.se.spi.presentation.rmi.PresentationManager ;
  64 import com.sun.corba.se.spi.presentation.rmi.StubAdapter ;
  65 
  66 import com.sun.corba.se.spi.orbutil.proxy.InvocationHandlerFactory ;
  67 import com.sun.corba.se.spi.orbutil.proxy.LinkedInvocationHandler ;
  68 
  69 import com.sun.corba.se.impl.corba.CORBAObjectImpl ;
  70 
  71 public final class StubInvocationHandlerImpl implements LinkedInvocationHandler
  72 {
  73     private transient PresentationManager.ClassData classData ;
  74     private transient PresentationManager pm ;
  75     private transient org.omg.CORBA.Object stub ;
  76     private transient Proxy self ;
  77 
  78     public void setProxy( Proxy self )
  79     {
  80         this.self = self ;
  81     }
  82 
  83     public Proxy getProxy()
  84     {
  85         return self ;
  86     }
  87 
  88     public StubInvocationHandlerImpl( PresentationManager pm,
  89         PresentationManager.ClassData classData, org.omg.CORBA.Object stub )
  90     {
  91         SecurityManager s = System.getSecurityManager();
  92         if (s != null) {
  93             s.checkPermission(new DynamicAccessPermission("access"));
  94         }
  95         this.classData = classData ;
  96         this.pm = pm ;
  97         this.stub = stub ;
  98     }
  99 
 100     private boolean isLocal()
 101     {
 102         boolean result = false ;
 103         Delegate delegate = StubAdapter.getDelegate( stub ) ;
 104 
 105         if (delegate instanceof CorbaClientDelegate) {
 106             CorbaClientDelegate cdel = (CorbaClientDelegate)delegate ;
 107             ContactInfoList cil = cdel.getContactInfoList() ;
 108             if (cil instanceof CorbaContactInfoList) {
 109                 CorbaContactInfoList ccil = (CorbaContactInfoList)cil ;
 110                 LocalClientRequestDispatcher lcrd =
 111                     ccil.getLocalClientRequestDispatcher() ;
 112                 result = lcrd.useLocalInvocation( null ) ;
 113             }
 114         }
 115 
 116         return result ;
 117     }
 118 
 119     /** Invoke the given method with the args and return the result.
 120      *  This may result in a remote invocation.
 121      *  @param proxy The proxy used for this class (null if not using java.lang.reflect.Proxy)
 122      */
 123     public Object invoke( Object proxy, final Method method,
 124         Object[] args ) throws Throwable
 125     {
 126         String giopMethodName = classData.getIDLNameTranslator().
 127             getIDLName( method )  ;
 128         DynamicMethodMarshaller dmm =
 129             pm.getDynamicMethodMarshaller( method ) ;
 130 
 131         Delegate delegate = null ;
 132         try {
 133             delegate = StubAdapter.getDelegate( stub ) ;
 134         } catch (SystemException ex) {
 135             throw Util.mapSystemException(ex) ;
 136         }
 137 
 138         if (!isLocal()) {
 139             try {
 140                 org.omg.CORBA_2_3.portable.InputStream in = null ;
 141                 try {
 142                     // create request
 143                     org.omg.CORBA_2_3.portable.OutputStream out =
 144                         (org.omg.CORBA_2_3.portable.OutputStream)
 145                         delegate.request( stub, giopMethodName, true);
 146 
 147                     // marshal arguments
 148                     dmm.writeArguments( out, args ) ;
 149 
 150                     // finish invocation
 151                     in = (org.omg.CORBA_2_3.portable.InputStream)
 152                         delegate.invoke( stub, out);
 153 
 154                     // unmarshal result
 155                     return dmm.readResult( in ) ;
 156                 } catch (ApplicationException ex) {
 157                     throw dmm.readException( ex ) ;
 158                 } catch (RemarshalException ex) {
 159                     return invoke( proxy, method, args ) ;
 160                 } finally {
 161                     delegate.releaseReply( stub, in );
 162                 }
 163             } catch (SystemException ex) {
 164                 throw Util.mapSystemException(ex) ;
 165             }
 166         } else {
 167             // local branch
 168             ORB orb = (ORB)delegate.orb( stub ) ;
 169             ServantObject so = delegate.servant_preinvoke( stub, giopMethodName,
 170                 method.getDeclaringClass() );
 171             if (so == null) {
 172                 return invoke( stub, method, args ) ;
 173             }
 174             try {
 175                 Object[] copies = dmm.copyArguments( args, orb ) ;
 176 
 177                 if (!method.isAccessible()) {
 178                     // Make sure that we can invoke a method from a normally
 179                     // inaccessible package, as this reflective class must always
 180                     // be able to invoke a non-public method.
 181                     AccessController.doPrivileged(new PrivilegedAction() {
 182                         public Object run() {
 183                             method.setAccessible( true ) ;
 184                             return null ;
 185                         }
 186                     } ) ;
 187                 }
 188 
 189                 Object result = method.invoke( so.servant, copies ) ;
 190 
 191                 return dmm.copyResult( result, orb ) ;
 192             } catch (InvocationTargetException ex) {
 193                 Throwable mex = ex.getCause() ;
 194                 // mex should never be null, as null cannot be thrown
 195                 Throwable exCopy = (Throwable)Util.copyObject(mex,orb);
 196                 if (dmm.isDeclaredException( exCopy ))
 197                     throw exCopy ;
 198                 else
 199                     throw Util.wrapException(exCopy);
 200             } catch (Throwable thr) {
 201                 if (thr instanceof ThreadDeath)
 202                     throw (ThreadDeath)thr ;
 203 
 204                 // This is not a user thrown exception from the
 205                 // method call, so don't copy it.  This is either
 206                 // an error or a reflective invoke exception.
 207                 throw Util.wrapException( thr ) ;
 208             } finally {
 209                 delegate.servant_postinvoke( stub, so);
 210             }
 211         }
 212     }
 213 }