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Diffstat (limited to 'gnu/CORBA/Restricted_ORB.java')
-rw-r--r-- | gnu/CORBA/Restricted_ORB.java | 368 |
1 files changed, 368 insertions, 0 deletions
diff --git a/gnu/CORBA/Restricted_ORB.java b/gnu/CORBA/Restricted_ORB.java new file mode 100644 index 000000000..8697f2874 --- /dev/null +++ b/gnu/CORBA/Restricted_ORB.java @@ -0,0 +1,368 @@ +/* RestrictedORB.java -- + Copyright (C) 2005 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath is distributed in the hope that it will be useful, but +WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +General Public License for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA +02111-1307 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package gnu.CORBA; + +import gnu.CORBA.CDR.cdrBufOutput; + +import org.omg.CORBA.Any; +import org.omg.CORBA.BAD_PARAM; +import org.omg.CORBA.ContextList; +import org.omg.CORBA.Environment; +import org.omg.CORBA.ExceptionList; +import org.omg.CORBA.NO_IMPLEMENT; +import org.omg.CORBA.NVList; +import org.omg.CORBA.NamedValue; +import org.omg.CORBA.ORB; +import org.omg.CORBA.ORBPackage.InvalidName; +import org.omg.CORBA.StructMember; +import org.omg.CORBA.TCKind; +import org.omg.CORBA.TypeCode; +import org.omg.CORBA.TypeCodePackage.BadKind; +import org.omg.CORBA.UnionMember; +import org.omg.CORBA.portable.OutputStream; + +import java.applet.Applet; + +import java.util.Properties; + +/** + * This class implements so-called Singleton ORB, a highly restricted version + * that cannot communicate over network. This ORB is provided + * for the potentially malicious applets with heavy security restrictions. + * It, however, supports some basic features that might be needed even + * when the network access is not granted. + * + * This ORB can only create typecodes, + * {@link Any}, {@link ContextList}, {@link NVList} and + * {@link org.omg.CORBA.portable.OutputStream} that writes to an + * internal buffer. + * + * All other methods throw the {@link NO_IMPLEMENT} exception. + * + * @author Audrius Meskauskas (AudriusA@Bioinformatics.org) + */ +public class Restricted_ORB + extends ORB +{ + /** + * The singleton instance of this ORB. + */ + public static final ORB Singleton = new Restricted_ORB(); + + /** + * Create a new instance of the RestrictedORB. This is used + * in derived classes only. + */ + protected Restricted_ORB() + { + } + + /** {@inheritDoc} */ + public TypeCode create_alias_tc(String id, String name, TypeCode typecode) + { + return new aliasTypeCode(typecode, id, name); + } + + /** {@inheritDoc} */ + public Any create_any() + { + return new gnuAny(); + } + + /** {@inheritDoc} */ + public TypeCode create_array_tc(int length, TypeCode element_type) + { + primitiveArrayTypeCode p = + new primitiveArrayTypeCode(TCKind.tk_array, element_type); + p.setLength(length); + return p; + } + + /** {@inheritDoc} */ + public ContextList create_context_list() + { + return new gnuContextList(); + } + + /** {@inheritDoc} */ + public TypeCode create_enum_tc(String id, String name, String[] values) + { + recordTypeCode r = new recordTypeCode(TCKind.tk_enum); + for (int i = 0; i < values.length; i++) + { + r.field().name = values [ i ]; + } + + r.setId(id); + r.setName(name); + + return r; + } + + /** {@inheritDoc} */ + public Environment create_environment() + { + return new gnuEnvironment(); + } + + /** {@inheritDoc} */ + public ExceptionList create_exception_list() + { + return new gnuExceptionList(); + } + + /** {@inheritDoc} */ + public TypeCode create_exception_tc(String id, String name, + StructMember[] members + ) + { + recordTypeCode r = new recordTypeCode(TCKind.tk_except); + r.setId(id); + r.setName(name); + + for (int i = 0; i < members.length; i++) + { + r.add(members [ i ]); + } + + return r; + } + + /** + * This method is not allowed for a RestrictedORB. + * + * @throws NO_IMPLEMENT, always. + */ + public TypeCode create_interface_tc(String id, String name) + { + no(); + return null; + } + + /** {@inheritDoc} */ + public NVList create_list(int count) + { + return new gnuNVList(count); + } + + /** {@inheritDoc} */ + public NamedValue create_named_value(String s, Any any, int flags) + { + return new gnuNamedValue(); + } + + /** {@inheritDoc} */ + public OutputStream create_output_stream() + { + cdrBufOutput stream = new cdrBufOutput(); + stream.setOrb(this); + return stream; + } + + /** {@inheritDoc} */ + public TypeCode create_sequence_tc(int bound, TypeCode element_type) + { + primitiveArrayTypeCode p = + new primitiveArrayTypeCode(TCKind.tk_sequence, element_type); + p.setLength(bound); + return p; + } + + /** {@inheritDoc} */ + public TypeCode create_string_tc(int bound) + { + stringTypeCode p = new stringTypeCode(TCKind.tk_string); + p.setLength(bound); + return p; + } + + /** {@inheritDoc} */ + public TypeCode create_struct_tc(String id, String name, + StructMember[] members + ) + { + recordTypeCode r = new recordTypeCode(TCKind.tk_struct); + r.setId(id); + r.setName(name); + + for (int i = 0; i < members.length; i++) + { + r.add(members [ i ]); + } + + return r; + } + + /** {@inheritDoc} */ + public TypeCode create_union_tc(String id, String name, TypeCode type, + UnionMember[] members + ) + { + recordTypeCode r = new recordTypeCode(TCKind.tk_union); + r.setId(id); + r.setName(name); + + for (int i = 0; i < members.length; i++) + { + r.add(members [ i ]); + } + + return r; + } + + /** {@inheritDoc} */ + public TypeCode create_wstring_tc(int bound) + { + stringTypeCode p = new stringTypeCode(TCKind.tk_wstring); + p.setLength(bound); + return p; + } + + /** {@inheritDoc} */ + public TypeCode get_primitive_tc(TCKind tcKind) + { + try + { + return typeNamer.getPrimitveTC(tcKind); + } + catch (BadKind ex) + { + throw new BAD_PARAM("This is not a primitive type code: " + + tcKind.value() + ); + } + } + + /** + * This method is not allowed for a RestrictedORB. + * + * @throws NO_IMPLEMENT, always. + */ + public String[] list_initial_services() + { + no(); + throw new InternalError(); + } + + /** + * This method is not allowed for a RestrictedORB. + * + * @throws NO_IMPLEMENT, always. + */ + public String object_to_string(org.omg.CORBA.Object forObject) + { + no(); + throw new InternalError(); + } + + /** + * This method is not allowed for a RestrictedORB. + * + * @throws InvalidName never in this class, but it is thrown + * in the derived classes. + * + * @throws NO_IMPLEMENT, always. + */ + public org.omg.CORBA.Object resolve_initial_references(String name) + throws InvalidName + { + no(); + throw new InternalError(); + } + + /** + * Shutdown the ORB server. + * + * For RestrictedORB, returns witout action. + */ + public void run() + { + } + + /** + * Shutdown the ORB server. + * + * For RestrictedORB, returns witout action. + */ + public void shutdown(boolean wait_for_completion) + { + } + + /** + * This method is not allowed for a RestrictedORB. + * + * @throws NO_IMPLEMENT, always. + */ + public org.omg.CORBA.Object string_to_object(String IOR) + { + no(); + throw new InternalError(); + } + + /** + * This method is not allowed for a RestrictedORB. + * + * @throws NO_IMPLEMENT, always. + */ + protected void set_parameters(Applet app, Properties props) + { + no(); + } + + /** + * This method is not allowed for a RestrictedORB. + * + * @throws NO_IMPLEMENT, always. + */ + protected void set_parameters(String[] args, Properties props) + { + no(); + } + + /** + * Throws an exception, stating that the given method is not supported + * by the Restricted ORB. + */ + private final void no() + { + // Apart the programming errors, this can only happen if the + // malicious code is trying to do that it is not allowed. + throw new NO_IMPLEMENT("Use init(args, props) for the functional version."); + } +} |