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* sources.am: Regenerated. * Makefile.in: Likewise. * scripts/makemake.tcl: Use glob -nocomplain. From-SVN: r107049
293 lines
9.7 KiB
Java
293 lines
9.7 KiB
Java
/* UnknownExceptionCtxHandler.java --
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Copyright (C) 2005 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package gnu.CORBA.CDR;
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import gnu.CORBA.Minor;
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import gnu.CORBA.ObjectCreator;
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import gnu.CORBA.GIOP.ServiceContext;
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import org.omg.CORBA.MARSHAL;
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import org.omg.CORBA.NO_IMPLEMENT;
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import org.omg.CORBA.StringValueHelper;
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import org.omg.CORBA.portable.OutputStream;
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import java.lang.reflect.Constructor;
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import java.util.StringTokenizer;
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import javax.rmi.CORBA.Util;
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/**
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* Reads the data about an unknown exception from the UnknownExceptionInfo.
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*
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* @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org)
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*/
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public class UnknownExceptionCtxHandler
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extends Vio
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{
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/**
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* Encode exception and add its recored to the message service contexts.
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*/
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public static ServiceContext[] addExceptionContext(ServiceContext[] current,
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Throwable exception, Object details)
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{
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try
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{
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ServiceContext[] c = new ServiceContext[current.length + 1];
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if (current.length > 0)
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System.arraycopy(current, 0, c, 0, current.length);
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BufferedCdrOutput output = new BufferedCdrOutput();
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if (details instanceof OutputStream)
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output.setOrb(((OutputStream) output).orb());
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if (details instanceof AbstractCdrOutput)
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((AbstractCdrOutput) details).cloneSettings(output);
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write(output, exception);
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ServiceContext xc = new ServiceContext();
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xc.context_id = ServiceContext.UnknownExceptionInfo;
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xc.context_data = output.buffer.toByteArray();
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c[current.length] = xc;
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return c;
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}
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catch (Exception ex)
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{
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ex.printStackTrace();
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return current;
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}
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}
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/**
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* Write data about unknown exception.
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*/
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public static void write(BufferedCdrOutput output, Throwable t)
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{
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t.fillInStackTrace();
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output.write_Value(t);
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}
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/**
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* Read the data about an unknown exception from the UnknownExceptionInfo.
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* Following the documentation, this must be just value type, but it seems
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* that in Sun's implementation is is not, as starts from 0x0. For value type,
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* this would be null.
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*
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* TODO Implement reading and writing in Sun format, making Classpath IIOP
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* interoperable with Sun's implementation. Current inmplementation reads and
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* reproduces the exception class type only.
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*
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* @param input the input stream to read the context (orb and other settings
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* are inherited from the main stream that received the message).
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*
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* @param contexts all service contexts that were present in the message.
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*
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* @return the Throwable, extracted from context, on null, if this has failed.
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*/
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public static Throwable read(BufferredCdrInput input, ServiceContext[] contexts)
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{
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input.mark(Integer.MAX_VALUE);
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int h = input.read_long();
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if (h == 0)
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{
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// This block reads exception info in the Sun specific format.
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// (currently we read the exception name only).
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try
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{
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// We may need to jump back if the value is read via value
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// factory.
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input.mark(512);
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int value_tag = input.read_long();
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checkTag(value_tag);
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String codebase = null;
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String[] ids = null;
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String id = null;
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// Check for the agreed null value.
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if (value_tag == vt_NULL)
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return null;
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else if (value_tag == vt_INDIRECTION)
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return (Throwable) readIndirection(input);
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else
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{
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// Read the value.
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if ((value_tag & vf_CODEBASE) != 0)
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{
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// The codebase is present. The codebase is a space
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// separated list of URLs from where the implementing
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// code can be downloaded.
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codebase = read_string(input);
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}
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if ((value_tag & vf_MULTIPLE_IDS) != 0)
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{
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// Multiple supported repository ids are present.
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ids = read_string_array(input);
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}
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else if ((value_tag & vf_ID) != 0)
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{
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// Single supported repository id is present.
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id = read_string(input);
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}
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}
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java.lang.Object ox = createInstance(id, ids, codebase);
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return (Throwable) ox;
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}
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catch (Exception ex)
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{
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ex.printStackTrace();
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return null;
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}
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}
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else
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{
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input.reset();
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// Read as defined in OMG documentation.
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return (Throwable) input.read_Value();
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}
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}
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/**
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* Load exception by name and create the instance. The reason why this is
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* different from Vio is because some exceptions have no parameterless
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* constructor, but have a constructor with the string parameter instead.
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*/
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static Object createInstance(String id, String[] ids, String codebase)
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{
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Object o = _createInstance(id, codebase);
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if (ids != null)
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for (int i = 0; i < ids.length && o == null; i++)
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o = _createInstance(ids[i], codebase);
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return o;
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}
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static Object _createInstance(String id, String codebase)
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{
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if (id == null)
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return null;
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if (id.equals(StringValueHelper.id()))
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return "";
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StringTokenizer st = new StringTokenizer(id, ":");
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String prefix = st.nextToken();
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if (prefix.equalsIgnoreCase("IDL"))
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return ObjectCreator.Idl2Object(id);
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else if (prefix.equalsIgnoreCase("RMI"))
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{
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String className = st.nextToken();
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String hashCode = st.nextToken();
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String sid = null;
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if (st.hasMoreElements())
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sid = st.nextToken();
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try
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{
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Class objectClass = Util.loadClass(className, codebase,
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Vio.class.getClassLoader());
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String rid = ObjectCreator.getRepositoryId(objectClass);
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if (!rid.equals(id))
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{
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// If direct string comparison fails, compare by meaning.
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StringTokenizer st2 = new StringTokenizer(rid, ":");
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if (!st2.nextToken().equals("RMI"))
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throw new InternalError("RMI format expected: '" + rid + "'");
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if (!st2.nextToken().equals(className))
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throwIt("Class name mismatch", id, rid, null);
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try
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{
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long h1 = Long.parseLong(hashCode, 16);
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long h2 = Long.parseLong(st2.nextToken(), 16);
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if (h1 != h2)
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throwIt("Hashcode mismatch", id, rid, null);
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if (sid != null && st2.hasMoreTokens())
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{
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long s1 = Long.parseLong(hashCode, 16);
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long s2 = Long.parseLong(st2.nextToken(), 16);
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if (s1 != s2)
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throwIt("serialVersionUID mismatch", id, rid, null);
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}
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}
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catch (NumberFormatException e)
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{
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throwIt("Invalid hashcode or svuid format: ", id, rid, e);
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}
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}
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// Some RemoteExceptions have no public parameterless constructor,
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// but they have constructor taking string as parameter.
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try
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{
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return objectClass.newInstance();
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}
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catch (Exception ex)
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{
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// Try instantiate passing string as parameter.
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Constructor c = objectClass.getConstructor(new Class[] { String.class });
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return c.newInstance(new Object[] { "<message unavailable>" });
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}
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}
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catch (MARSHAL m)
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{
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m.minor = Minor.Instantiation;
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throw m;
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}
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catch (Exception ex)
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{
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MARSHAL m = new MARSHAL("Unable to instantiate " + id);
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m.minor = Minor.Instantiation;
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m.initCause(ex);
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throw m;
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}
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}
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else
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throw new NO_IMPLEMENT("Unsupported prefix " + prefix + ":");
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}
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}
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