summaryrefslogtreecommitdiff
path: root/libjava/classpath/gnu/CORBA/OrbRestricted.java
blob: 35f0b1724819b3843827af2d5d118fa90daf7590 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
/* 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., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301 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.BufferedCdrOutput;
import gnu.CORBA.typecodes.AliasTypeCode;
import gnu.CORBA.typecodes.ArrayTypeCode;
import gnu.CORBA.typecodes.PrimitiveTypeCode;
import gnu.CORBA.typecodes.RecordTypeCode;
import gnu.CORBA.typecodes.StringTypeCode;

import org.omg.CORBA.Any;
import org.omg.CORBA.BAD_PARAM;
import org.omg.CORBA.Context;
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.Request;
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 org.omg.CORBA.portable.ValueFactory;
import org.omg.PortableInterceptor.ClientRequestInterceptorOperations;
import org.omg.PortableInterceptor.IORInterceptor_3_0Operations;
import org.omg.PortableInterceptor.ServerRequestInterceptorOperations;

import java.applet.Applet;

import java.util.Hashtable;
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 OrbRestricted extends org.omg.CORBA_2_3.ORB
{
  /**
   * The singleton instance of this ORB.
   */
  public static final ORB Singleton = new OrbRestricted();

  /**
   * The cumulated listener for all IOR interceptors. Interceptors are used by
   * {@link gnu.CORBA.Poa.ORB_1_4}.
   */
  public IORInterceptor_3_0Operations iIor;

  /**
   * The cumulated listener for all server request interceptors. Interceptors
   * are used by {@link gnu.CORBA.Poa.ORB_1_4}.
   */
  public ServerRequestInterceptorOperations iServer;

  /**
   * The cumulated listener for all client request interceptros. Interceptors
   * are used by {@link gnu.CORBA.Poa.ORB_1_4}.
   */
  public ClientRequestInterceptorOperations iClient;

  /**
   * The required size of the interceptor slot array.
   */
  public int icSlotSize = 0;

  /**
   * The value factories.
   */
  protected Hashtable factories = new Hashtable();

  /**
   * The policy factories.
   */
  protected Hashtable policyFactories = new Hashtable();

  /**
       * Create a new instance of the RestrictedORB. This is used in derived classes
   * only.
   */
  protected OrbRestricted()
  {
  }

  /** {@inheritDoc} */
  public TypeCode create_alias_tc(String id, String name, TypeCode typecode)
  {
    return new AliasTypeCode(typecode, id, name);
  }

  /** {@inheritDoc} */
  public Any create_any()
  {
    gnuAny any = new gnuAny();
    any.setOrb(this);
    return any;
  }

  /** {@inheritDoc} */
  public TypeCode create_array_tc(int length, TypeCode element_type)
  {
    ArrayTypeCode p =
      new ArrayTypeCode(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()
  {
    BufferedCdrOutput stream = new BufferedCdrOutput();
    stream.setOrb(this);
    return stream;
  }

  /** {@inheritDoc} */
  public TypeCode create_sequence_tc(int bound, TypeCode element_type)
  {
    ArrayTypeCode p =
      new ArrayTypeCode(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 discriminator_type, UnionMember[] members
  )
  {
    RecordTypeCode r = new RecordTypeCode(TCKind.tk_union);
    r.setId(id);
    r.setName(name);
    r.setDiscriminator_type(discriminator_type);
    r.setDefaultIndex(0);

    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 TypeKindNamer.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.");
  }

  /**
   * This method is not allowed for a RestrictedORB.
   *
   * @throws NO_IMPLEMENT, always.
   */
  public Request get_next_response() throws org.omg.CORBA.WrongTransaction
  {
    no();
    throw new InternalError();
  }

  /**
   * This method is not allowed for a RestrictedORB.
   *
   * @throws NO_IMPLEMENT, always.
   */
  public boolean poll_next_response()
  {
    no();
    throw new InternalError();
  }

  /**
   * This method is not allowed for a RestrictedORB.
   *
   * @throws NO_IMPLEMENT, always.
   */
  public void send_multiple_requests_deferred(Request[] requests)
  {
    no();
  }

  /**
   * This method is not allowed for a RestrictedORB.
   *
   * @throws NO_IMPLEMENT, always.
   */
  public void send_multiple_requests_oneway(Request[] requests)
  {
    no();
  }

  /**
   * Register the value factory under the given repository id.
   */
  public ValueFactory register_value_factory(String repository_id,
    ValueFactory factory
  )
  {
    factories.put(repository_id, factory);
    return factory;
  }

  /**
   * Unregister the value factroy.
   */
  public void unregister_value_factory(String id)
  {
    factories.remove(id);
  }

  /**
   * Look for the value factory for the value, having the given repository id.
       * The implementation checks for the registered value factories first. If none
       * found, it tries to load and instantiate the class, mathing the given naming
   * convention. If this faild, null is returned.
   *
   * @param repository_id a repository id.
   *
   * @return a found value factory, null if none.
   */
  public ValueFactory lookup_value_factory(String repository_id)
  {
    ValueFactory f = (ValueFactory) factories.get(repository_id);
    if (f != null)
      {
        return f;
      }

    f = (ValueFactory) ObjectCreator.createObject(repository_id,
        "DefaultFactory"
      );
    if (f != null)
      {
        factories.put(repository_id, f);
      }
    return f;
  }

  /**
   * Destroy the interceptors, if they are present.
   */
  public void destroy()
  {
    if (iIor != null)
      {
        iIor.destroy();
        iIor = null;
      }

    if (iServer != null)
      {
        iServer.destroy();
        iServer = null;
      }

    if (iClient != null)
      {
        iClient.destroy();
        iClient = null;
      }

    super.destroy();
  }

  /**
   * Create a typecode, representing a tree-like structure.
   * This structure contains a member that is a sequence of the same type,
   * as the structure itself. You can imagine as if the folder definition
   * contains a variable-length array of the enclosed (nested) folder
   * definitions. In this way, it is possible to have a tree like
   * structure that can be transferred via CORBA CDR stream.
   *
   * @deprecated It is easier and clearler to use a combination of
   * create_recursive_tc and create_sequence_tc instead.
   *
   * @param bound the maximal expected number of the nested components
   * on each node; 0 if not limited.
   *
   * @param offset the position of the field in the returned structure
   * that contains the sequence of the structures of the same field.
   * The members before this field are intialised using parameterless
   * StructMember constructor.
   *
   * @return a typecode, defining a stucture, where a member at the
   * <code>offset</code> position defines an array of the identical
   * structures.
   *
   * @see #create_recursive_tc(String)
   * @see #create_sequence_tc(int, TypeCode)
   */
  public TypeCode create_recursive_sequence_tc(int bound, int offset)
  {
    RecordTypeCode r = new RecordTypeCode(TCKind.tk_struct);
    for (int i = 0; i < offset; i++)
      r.add(new StructMember());

    TypeCode recurs = new PrimitiveTypeCode(TCKind.tk_sequence);

    r.add(new StructMember("", recurs, null));
    return r;
  }

  /**
   * Get the default context of this ORB. This is an initial root of all
   * contexts.
   *
   * The default method returns a new context with the empty name and
   * no parent context.
   *
   * @return the default context of this ORB.
   */
  public Context get_default_context()
  {
    return new gnuContext("", null);
  }

}