aboutsummaryrefslogtreecommitdiff
path: root/contrib/isc-dhcp/common/comapi.c
blob: 52476eea083235e5a23965ffd096c01c32a35a29 (plain) (blame)
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
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
/* omapi.c

   OMAPI object interfaces for the DHCP server. */

/*
 * Copyright (c) 1999-2002 Internet Software Consortium.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of The Internet Software Consortium nor the names
 *    of its contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE INTERNET SOFTWARE CONSORTIUM AND
 * CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL THE INTERNET SOFTWARE CONSORTIUM OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * This software has been written for the Internet Software Consortium
 * by Ted Lemon in cooperation with Vixie Enterprises and Nominum, Inc.
 * To learn more about the Internet Software Consortium, see
 * ``http://www.isc.org/''.  To learn more about Vixie Enterprises,
 * see ``http://www.vix.com''.   To learn more about Nominum, Inc., see
 * ``http://www.nominum.com''.
 */

/* Many, many thanks to Brian Murrell and BCtel for this code - BCtel
   provided the funding that resulted in this code and the entire
   OMAPI support library being written, and Brian helped brainstorm
   and refine the requirements.  To the extent that this code is
   useful, you have Brian and BCtel to thank.  Any limitations in the
   code are a result of mistakes on my part.  -- Ted Lemon */

#ifndef lint
static char copyright[] =
"$Id: comapi.c,v 1.9.2.6 2002/11/17 02:26:56 dhankins Exp $ Copyright (c) 1999-2002 The Internet Software Consortium.  All rights reserved.\n";
#endif /* not lint */

#include "dhcpd.h"
#include <omapip/omapip_p.h>

OMAPI_OBJECT_ALLOC (subnet, struct subnet, dhcp_type_subnet)
OMAPI_OBJECT_ALLOC (shared_network, struct shared_network,
		    dhcp_type_shared_network)
OMAPI_OBJECT_ALLOC (group_object, struct group_object, dhcp_type_group)
OMAPI_OBJECT_ALLOC (dhcp_control, dhcp_control_object_t, dhcp_type_control)

omapi_object_type_t *dhcp_type_interface;
omapi_object_type_t *dhcp_type_group;
omapi_object_type_t *dhcp_type_shared_network;
omapi_object_type_t *dhcp_type_subnet;
omapi_object_type_t *dhcp_type_control;
dhcp_control_object_t *dhcp_control_object;

void dhcp_common_objects_setup ()
{
	isc_result_t status;

	status = omapi_object_type_register (&dhcp_type_control,
					     "control",
					     dhcp_control_set_value,
					     dhcp_control_get_value,
					     dhcp_control_destroy,
					     dhcp_control_signal_handler,
					     dhcp_control_stuff_values,
					     dhcp_control_lookup, 
					     dhcp_control_create,
					     dhcp_control_remove, 0, 0, 0,
					     sizeof (dhcp_control_object_t),
					     0, RC_MISC);
	if (status != ISC_R_SUCCESS)
		log_fatal ("Can't register control object type: %s",
			   isc_result_totext (status));
	status = dhcp_control_allocate (&dhcp_control_object, MDL);
	if (status != ISC_R_SUCCESS)
		log_fatal ("Can't make initial control object: %s",
			   isc_result_totext (status));
	dhcp_control_object -> state = server_startup;

	status = omapi_object_type_register (&dhcp_type_group,
					     "group",
					     dhcp_group_set_value,
					     dhcp_group_get_value,
					     dhcp_group_destroy,
					     dhcp_group_signal_handler,
					     dhcp_group_stuff_values,
					     dhcp_group_lookup, 
					     dhcp_group_create,
					     dhcp_group_remove, 0, 0, 0,
					     sizeof (struct group_object), 0,
					     RC_MISC);
	if (status != ISC_R_SUCCESS)
		log_fatal ("Can't register group object type: %s",
			   isc_result_totext (status));

	status = omapi_object_type_register (&dhcp_type_subnet,
					     "subnet",
					     dhcp_subnet_set_value,
					     dhcp_subnet_get_value,
					     dhcp_subnet_destroy,
					     dhcp_subnet_signal_handler,
					     dhcp_subnet_stuff_values,
					     dhcp_subnet_lookup, 
					     dhcp_subnet_create,
					     dhcp_subnet_remove, 0, 0, 0,
					     sizeof (struct subnet), 0,
					     RC_MISC);
	if (status != ISC_R_SUCCESS)
		log_fatal ("Can't register subnet object type: %s",
			   isc_result_totext (status));

	status = omapi_object_type_register
		(&dhcp_type_shared_network,
		 "shared-network",
		 dhcp_shared_network_set_value,
		 dhcp_shared_network_get_value,
		 dhcp_shared_network_destroy,
		 dhcp_shared_network_signal_handler,
		 dhcp_shared_network_stuff_values,
		 dhcp_shared_network_lookup, 
		 dhcp_shared_network_create,
		 dhcp_shared_network_remove, 0, 0, 0,
		 sizeof (struct shared_network), 0, RC_MISC);
	if (status != ISC_R_SUCCESS)
		log_fatal ("Can't register shared network object type: %s",
			   isc_result_totext (status));

	interface_setup ();
}

isc_result_t dhcp_group_set_value  (omapi_object_t *h,
				    omapi_object_t *id,
				    omapi_data_string_t *name,
				    omapi_typed_data_t *value)
{
	struct group_object *group;
	isc_result_t status;
	int foo;

	if (h -> type != dhcp_type_group)
		return ISC_R_INVALIDARG;
	group = (struct group_object *)h;

	/* XXX For now, we can only set these values on new group objects. 
	   XXX Soon, we need to be able to update group objects. */
	if (!omapi_ds_strcmp (name, "name")) {
		if (group -> name)
			return ISC_R_EXISTS;
		if (value -> type == omapi_datatype_data ||
		    value -> type == omapi_datatype_string) {
			group -> name = dmalloc (value -> u.buffer.len + 1,
						 MDL);
			if (!group -> name)
				return ISC_R_NOMEMORY;
			memcpy (group -> name,
				value -> u.buffer.value,
				value -> u.buffer.len);
			group -> name [value -> u.buffer.len] = 0;
		} else
			return ISC_R_INVALIDARG;
		return ISC_R_SUCCESS;
	}

	if (!omapi_ds_strcmp (name, "statements")) {
		if (group -> group && group -> group -> statements)
			return ISC_R_EXISTS;
		if (!group -> group) {
			if (!clone_group (&group -> group, root_group, MDL))
				return ISC_R_NOMEMORY;
		}
		if (value -> type == omapi_datatype_data ||
		    value -> type == omapi_datatype_string) {
			struct parse *parse;
			int lose = 0;
			parse = (struct parse *)0;
			status = new_parse (&parse, -1,
					    (char *)value -> u.buffer.value,
					    value -> u.buffer.len,
					    "network client", 0);
			if (status != ISC_R_SUCCESS)
				return status;
			if (!(parse_executable_statements
			      (&group -> group -> statements, parse, &lose,
			       context_any))) {
				end_parse (&parse);
				return ISC_R_BADPARSE;
			}
			end_parse (&parse);
			return ISC_R_SUCCESS;
		} else
			return ISC_R_INVALIDARG;
	}

	/* Try to find some inner object that can take the value. */
	if (h -> inner && h -> inner -> type -> set_value) {
		status = ((*(h -> inner -> type -> set_value))
			  (h -> inner, id, name, value));
		if (status == ISC_R_SUCCESS || status == ISC_R_UNCHANGED)
			return status;
	}
			  
	return ISC_R_NOTFOUND;
}


isc_result_t dhcp_group_get_value (omapi_object_t *h, omapi_object_t *id,
				   omapi_data_string_t *name,
				   omapi_value_t **value)
{
	struct group_object *group;
	isc_result_t status;
	struct data_string ip_addrs;

	if (h -> type != dhcp_type_group)
		return ISC_R_INVALIDARG;
	group = (struct group_object *)h;

	if (!omapi_ds_strcmp (name, "name"))
		return omapi_make_string_value (value,
						name, group -> name, MDL);

	/* Try to find some inner object that can take the value. */
	if (h -> inner && h -> inner -> type -> get_value) {
		status = ((*(h -> inner -> type -> get_value))
			  (h -> inner, id, name, value));
		if (status == ISC_R_SUCCESS)
			return status;
	}
	return ISC_R_NOTFOUND;
}

isc_result_t dhcp_group_destroy (omapi_object_t *h, const char *file, int line)
{
	struct group_object *group, *t;
	isc_result_t status;

	if (h -> type != dhcp_type_group)
		return ISC_R_INVALIDARG;
	group = (struct group_object *)h;

	if (group -> name) {
		if (group_name_hash) {
			t = (struct group_object *)0;
			if (group_hash_lookup (&t, group_name_hash,
					       group -> name,
					       strlen (group -> name), MDL)) {
				group_hash_delete (group_name_hash,
						   group -> name,
						   strlen (group -> name),
						   MDL);
				group_object_dereference (&t, MDL);
			}
		}
		dfree (group -> name, file, line);
		group -> name = (char *)0;
	}
	if (group -> group)
		group_dereference (&group -> group, MDL);

	return ISC_R_SUCCESS;
}

isc_result_t dhcp_group_signal_handler (omapi_object_t *h,
					const char *name, va_list ap)
{
	struct group_object *group, *t;
	isc_result_t status;
	int updatep = 0;

	if (h -> type != dhcp_type_group)
		return ISC_R_INVALIDARG;
	group = (struct group_object *)h;

	if (!strcmp (name, "updated")) {
		/* A group object isn't valid if a subgroup hasn't yet been
		   associated with it. */
		if (!group -> group)
			return ISC_R_INVALIDARG;

		/* Group objects always have to have names. */
		if (!group -> name) {
			char hnbuf [64];
			sprintf (hnbuf, "ng%08lx%08lx",
				 (unsigned long)cur_time,
				 (unsigned long)group);
			group -> name = dmalloc (strlen (hnbuf) + 1, MDL);
			if (!group -> name)
				return ISC_R_NOMEMORY;
			strcpy (group -> name, hnbuf);
		}

		supersede_group (group, 1);
		updatep = 1;
	}

	/* Try to find some inner object that can take the value. */
	if (h -> inner && h -> inner -> type -> get_value) {
		status = ((*(h -> inner -> type -> signal_handler))
			  (h -> inner, name, ap));
		if (status == ISC_R_SUCCESS)
			return status;
	}
	if (updatep)
		return ISC_R_SUCCESS;
	return ISC_R_NOTFOUND;
}

isc_result_t dhcp_group_stuff_values (omapi_object_t *c,
				      omapi_object_t *id,
				      omapi_object_t *h)
{
	struct group_object *group;
	isc_result_t status;

	if (h -> type != dhcp_type_group)
		return ISC_R_INVALIDARG;
	group = (struct group_object *)h;

	/* Write out all the values. */
	if (group -> name) {
		status = omapi_connection_put_name (c, "name");
		if (status != ISC_R_SUCCESS)
			return status;
		status = omapi_connection_put_string (c, group -> name);
		if (status != ISC_R_SUCCESS)
			return status;
	}

	/* Write out the inner object, if any. */
	if (h -> inner && h -> inner -> type -> stuff_values) {
		status = ((*(h -> inner -> type -> stuff_values))
			  (c, id, h -> inner));
		if (status == ISC_R_SUCCESS)
			return status;
	}

	return ISC_R_SUCCESS;
}

isc_result_t dhcp_group_lookup (omapi_object_t **lp,
				omapi_object_t *id, omapi_object_t *ref)
{
	omapi_value_t *tv = (omapi_value_t *)0;
	isc_result_t status;
	struct group_object *group;

	if (!ref)
		return ISC_R_NOKEYS;

	/* First see if we were sent a handle. */
	status = omapi_get_value_str (ref, id, "handle", &tv);
	if (status == ISC_R_SUCCESS) {
		status = omapi_handle_td_lookup (lp, tv -> value);

		omapi_value_dereference (&tv, MDL);
		if (status != ISC_R_SUCCESS)
			return status;

		/* Don't return the object if the type is wrong. */
		if ((*lp) -> type != dhcp_type_group) {
			omapi_object_dereference (lp, MDL);
			return ISC_R_INVALIDARG;
		}
	}

	/* Now look for a name. */
	status = omapi_get_value_str (ref, id, "name", &tv);
	if (status == ISC_R_SUCCESS) {
		group = (struct group_object *)0;
		if (group_name_hash &&
		    group_hash_lookup (&group, group_name_hash,
				       (const char *)
				       tv -> value -> u.buffer.value,
				       tv -> value -> u.buffer.len, MDL)) {
			omapi_value_dereference (&tv, MDL);

			if (*lp && *lp != (omapi_object_t *)group) {
			    group_object_dereference (&group, MDL);
			    omapi_object_dereference (lp, MDL);
			    return ISC_R_KEYCONFLICT;
			} else if (!*lp) {
			    /* XXX fix so that hash lookup itself creates
			       XXX the reference. */
			    omapi_object_reference (lp,
						    (omapi_object_t *)group,
						    MDL);
			    group_object_dereference (&group, MDL);
			}
		} else if (!*lp)
			return ISC_R_NOTFOUND;
	}

	/* If we get to here without finding a group, no valid key was
	   specified. */
	if (!*lp)
		return ISC_R_NOKEYS;

	if (((struct group_object *)(*lp)) -> flags & GROUP_OBJECT_DELETED) {
		omapi_object_dereference (lp, MDL);
		return ISC_R_NOTFOUND;
	}
	return ISC_R_SUCCESS;
}

isc_result_t dhcp_group_create (omapi_object_t **lp,
			       omapi_object_t *id)
{
	struct group_object *group;
	isc_result_t status;
	group = (struct group_object *)0;

	status = group_object_allocate (&group, MDL);
	if (status != ISC_R_SUCCESS)
		return status;
	group -> flags = GROUP_OBJECT_DYNAMIC;
	status = omapi_object_reference (lp, (omapi_object_t *)group, MDL);
	group_object_dereference (&group, MDL);
	return status;
}

isc_result_t dhcp_group_remove (omapi_object_t *lp,
				omapi_object_t *id)
{
	struct group_object *group;
	isc_result_t status;
	if (lp -> type != dhcp_type_group)
		return ISC_R_INVALIDARG;
	group = (struct group_object *)lp;

	group -> flags |= GROUP_OBJECT_DELETED;
	if (group_write_hook) {
		if (!(*group_write_hook) (group))
			return ISC_R_IOERROR;
	}

	status = dhcp_group_destroy ((omapi_object_t *)group, MDL);

	return ISC_R_SUCCESS;
}

isc_result_t dhcp_control_set_value  (omapi_object_t *h,
				      omapi_object_t *id,
				      omapi_data_string_t *name,
				      omapi_typed_data_t *value)
{
	dhcp_control_object_t *control;
	isc_result_t status;
	int foo;
	unsigned long newstate;

	if (h -> type != dhcp_type_control)
		return ISC_R_INVALIDARG;
	control = (dhcp_control_object_t *)h;

	if (!omapi_ds_strcmp (name, "state")) {
		status = omapi_get_int_value (&newstate, value);
		if (status != ISC_R_SUCCESS)
			return status;
		status = dhcp_set_control_state (control -> state, newstate);
		if (status == ISC_R_SUCCESS)
			control -> state = value -> u.integer;
		return status;
	}

	/* Try to find some inner object that can take the value. */
	if (h -> inner && h -> inner -> type -> set_value) {
		status = ((*(h -> inner -> type -> set_value))
			  (h -> inner, id, name, value));
		if (status == ISC_R_SUCCESS || status == ISC_R_UNCHANGED)
			return status;
	}
			  
	return ISC_R_NOTFOUND;
}


isc_result_t dhcp_control_get_value (omapi_object_t *h, omapi_object_t *id,
				   omapi_data_string_t *name,
				   omapi_value_t **value)
{
	dhcp_control_object_t *control;
	isc_result_t status;
	struct data_string ip_addrs;

	if (h -> type != dhcp_type_control)
		return ISC_R_INVALIDARG;
	control = (dhcp_control_object_t *)h;

	if (!omapi_ds_strcmp (name, "state"))
		return omapi_make_int_value (value,
					     name, (int)control -> state, MDL);

	/* Try to find some inner object that can take the value. */
	if (h -> inner && h -> inner -> type -> get_value) {
		status = ((*(h -> inner -> type -> get_value))
			  (h -> inner, id, name, value));
		if (status == ISC_R_SUCCESS)
			return status;
	}
	return ISC_R_NOTFOUND;
}

isc_result_t dhcp_control_destroy (omapi_object_t *h,
				   const char *file, int line)
{
	dhcp_control_object_t *control, *t;
	isc_result_t status;

	if (h -> type != dhcp_type_control)
		return ISC_R_INVALIDARG;

	/* Can't destroy the control object. */
	return ISC_R_NOPERM;
}

isc_result_t dhcp_control_signal_handler (omapi_object_t *h,
					const char *name, va_list ap)
{
	dhcp_control_object_t *control, *t;
	isc_result_t status;
	int updatep = 0;

	if (h -> type != dhcp_type_control)
		return ISC_R_INVALIDARG;
	control = (dhcp_control_object_t *)h;

	/* Try to find some inner object that can take the value. */
	if (h -> inner && h -> inner -> type -> get_value) {
		status = ((*(h -> inner -> type -> signal_handler))
			  (h -> inner, name, ap));
		if (status == ISC_R_SUCCESS)
			return status;
	}
	return ISC_R_NOTFOUND;
}

isc_result_t dhcp_control_stuff_values (omapi_object_t *c,
					omapi_object_t *id,
					omapi_object_t *h)
{
	dhcp_control_object_t *control;
	isc_result_t status;

	if (h -> type != dhcp_type_control)
		return ISC_R_INVALIDARG;
	control = (dhcp_control_object_t *)h;

	/* Write out all the values. */
	status = omapi_connection_put_name (c, "state");
	if (status != ISC_R_SUCCESS)
		return status;
	status = omapi_connection_put_uint32 (c, sizeof (u_int32_t));
	if (status != ISC_R_SUCCESS)
		return status;
	status = omapi_connection_put_uint32 (c, control -> state);
	if (status != ISC_R_SUCCESS)
		return status;

	/* Write out the inner object, if any. */
	if (h -> inner && h -> inner -> type -> stuff_values) {
		status = ((*(h -> inner -> type -> stuff_values))
			  (c, id, h -> inner));
		if (status == ISC_R_SUCCESS)
			return status;
	}

	return ISC_R_SUCCESS;
}

isc_result_t dhcp_control_lookup (omapi_object_t **lp,
				  omapi_object_t *id, omapi_object_t *ref)
{
	omapi_value_t *tv = (omapi_value_t *)0;
	isc_result_t status;
	dhcp_control_object_t *control;

	/* First see if we were sent a handle. */
	if (ref) {
		status = omapi_get_value_str (ref, id, "handle", &tv);
		if (status == ISC_R_SUCCESS) {
			status = omapi_handle_td_lookup (lp, tv -> value);
			
			omapi_value_dereference (&tv, MDL);
			if (status != ISC_R_SUCCESS)
				return status;
			
			/* Don't return the object if the type is wrong. */
			if ((*lp) -> type != dhcp_type_control) {
				omapi_object_dereference (lp, MDL);
				return ISC_R_INVALIDARG;
			}
		}
	}

	/* Otherwise, stop playing coy - there's only one control object,
	   so we can just return it. */
	dhcp_control_reference ((dhcp_control_object_t **)lp,
				dhcp_control_object, MDL);
	return ISC_R_SUCCESS;
}

isc_result_t dhcp_control_create (omapi_object_t **lp,
				  omapi_object_t *id)
{
	/* Can't create a control object - there can be only one. */
	return ISC_R_NOPERM;
}

isc_result_t dhcp_control_remove (omapi_object_t *lp,
				omapi_object_t *id)
{
	/* Form is emptiness; emptiness form.   The control object
	   cannot go out of existance. */
	return ISC_R_NOPERM;
}

isc_result_t dhcp_subnet_set_value  (omapi_object_t *h,
				     omapi_object_t *id,
				     omapi_data_string_t *name,
				     omapi_typed_data_t *value)
{
	struct subnet *subnet;
	isc_result_t status;
	int foo;

	if (h -> type != dhcp_type_subnet)
		return ISC_R_INVALIDARG;
	subnet = (struct subnet *)h;

	/* No values to set yet. */

	/* Try to find some inner object that can take the value. */
	if (h -> inner && h -> inner -> type -> set_value) {
		status = ((*(h -> inner -> type -> set_value))
			  (h -> inner, id, name, value));
		if (status == ISC_R_SUCCESS || status == ISC_R_UNCHANGED)
			return status;
	}
			  
	return ISC_R_NOTFOUND;
}


isc_result_t dhcp_subnet_get_value (omapi_object_t *h, omapi_object_t *id,
				    omapi_data_string_t *name,
				    omapi_value_t **value)
{
	struct subnet *subnet;
	isc_result_t status;

	if (h -> type != dhcp_type_subnet)
		return ISC_R_INVALIDARG;
	subnet = (struct subnet *)h;

	/* No values to get yet. */

	/* Try to find some inner object that can provide the value. */
	if (h -> inner && h -> inner -> type -> get_value) {
		status = ((*(h -> inner -> type -> get_value))
			  (h -> inner, id, name, value));
		if (status == ISC_R_SUCCESS)
			return status;
	}
	return ISC_R_NOTFOUND;
}

isc_result_t dhcp_subnet_destroy (omapi_object_t *h, const char *file, int line)
{
	struct subnet *subnet;
	isc_result_t status;

	if (h -> type != dhcp_type_subnet)
		return ISC_R_INVALIDARG;
	subnet = (struct subnet *)h;

#if defined (DEBUG_MEMORY_LEAKAGE) || \
		defined (DEBUG_MEMORY_LEAKAGE_ON_EXIT)
	if (subnet -> next_subnet)
		subnet_dereference (&subnet -> next_subnet, file, line);
	if (subnet -> next_sibling)
		subnet_dereference (&subnet -> next_sibling, file, line);
	if (subnet -> shared_network)
		shared_network_dereference (&subnet -> shared_network,
					    file, line);
	if (subnet -> interface)
		interface_dereference (&subnet -> interface, file, line);
	if (subnet -> group)
		group_dereference (&subnet -> group, file, line);
#endif

	return ISC_R_SUCCESS;
}

isc_result_t dhcp_subnet_signal_handler (omapi_object_t *h,
					 const char *name, va_list ap)
{
	struct subnet *subnet;
	isc_result_t status;
	int updatep = 0;

	if (h -> type != dhcp_type_subnet)
		return ISC_R_INVALIDARG;
	subnet = (struct subnet *)h;

	/* Can't write subnets yet. */

	/* Try to find some inner object that can take the value. */
	if (h -> inner && h -> inner -> type -> get_value) {
		status = ((*(h -> inner -> type -> signal_handler))
			  (h -> inner, name, ap));
		if (status == ISC_R_SUCCESS)
			return status;
	}
	if (updatep)
		return ISC_R_SUCCESS;
	return ISC_R_NOTFOUND;
}

isc_result_t dhcp_subnet_stuff_values (omapi_object_t *c,
				       omapi_object_t *id,
				       omapi_object_t *h)
{
	struct subnet *subnet;
	isc_result_t status;

	if (h -> type != dhcp_type_subnet)
		return ISC_R_INVALIDARG;
	subnet = (struct subnet *)h;

	/* Can't stuff subnet values yet. */

	/* Write out the inner object, if any. */
	if (h -> inner && h -> inner -> type -> stuff_values) {
		status = ((*(h -> inner -> type -> stuff_values))
			  (c, id, h -> inner));
		if (status == ISC_R_SUCCESS)
			return status;
	}

	return ISC_R_SUCCESS;
}

isc_result_t dhcp_subnet_lookup (omapi_object_t **lp,
				 omapi_object_t *id,
				 omapi_object_t *ref)
{
	omapi_value_t *tv = (omapi_value_t *)0;
	isc_result_t status;
	struct subnet *subnet;

	/* Can't look up subnets yet. */

	/* If we get to here without finding a subnet, no valid key was
	   specified. */
	if (!*lp)
		return ISC_R_NOKEYS;
	return ISC_R_SUCCESS;
}

isc_result_t dhcp_subnet_create (omapi_object_t **lp,
				 omapi_object_t *id)
{
	return ISC_R_NOTIMPLEMENTED;
}

isc_result_t dhcp_subnet_remove (omapi_object_t *lp,
			       omapi_object_t *id)
{
	return ISC_R_NOTIMPLEMENTED;
}

isc_result_t dhcp_shared_network_set_value  (omapi_object_t *h,
					     omapi_object_t *id,
					     omapi_data_string_t *name,
					     omapi_typed_data_t *value)
{
	struct shared_network *shared_network;
	isc_result_t status;
	int foo;

	if (h -> type != dhcp_type_shared_network)
		return ISC_R_INVALIDARG;
	shared_network = (struct shared_network *)h;

	/* No values to set yet. */

	/* Try to find some inner object that can take the value. */
	if (h -> inner && h -> inner -> type -> set_value) {
		status = ((*(h -> inner -> type -> set_value))
			  (h -> inner, id, name, value));
		if (status == ISC_R_SUCCESS || status == ISC_R_UNCHANGED)
			return status;
	}
			  
	return ISC_R_NOTFOUND;
}


isc_result_t dhcp_shared_network_get_value (omapi_object_t *h,
					    omapi_object_t *id,
					    omapi_data_string_t *name,
					    omapi_value_t **value)
{
	struct shared_network *shared_network;
	isc_result_t status;

	if (h -> type != dhcp_type_shared_network)
		return ISC_R_INVALIDARG;
	shared_network = (struct shared_network *)h;

	/* No values to get yet. */

	/* Try to find some inner object that can provide the value. */
	if (h -> inner && h -> inner -> type -> get_value) {
		status = ((*(h -> inner -> type -> get_value))
			  (h -> inner, id, name, value));
		if (status == ISC_R_SUCCESS)
			return status;
	}
	return ISC_R_NOTFOUND;
}

isc_result_t dhcp_shared_network_destroy (omapi_object_t *h,
					  const char *file, int line)
{
	struct shared_network *shared_network;
	isc_result_t status;

	if (h -> type != dhcp_type_shared_network)
		return ISC_R_INVALIDARG;
	shared_network = (struct shared_network *)h;

#if defined (DEBUG_MEMORY_LEAKAGE) || \
		defined (DEBUG_MEMORY_LEAKAGE_ON_EXIT)
	if (shared_network -> next)
		shared_network_dereference (&shared_network -> next,
					    file, line);
	if (shared_network -> name) {
		dfree (shared_network -> name, file, line);
		shared_network -> name = 0;
	}
	if (shared_network -> subnets)
		subnet_dereference (&shared_network -> subnets, file, line);
	if (shared_network -> interface)
		interface_dereference (&shared_network -> interface,
				       file, line);
	if (shared_network -> pools)
	    omapi_object_dereference ((omapi_object_t **)
				      &shared_network -> pools, file, line);
	if (shared_network -> group)
		group_dereference (&shared_network -> group, file, line);
#if defined (FAILOVER_PROTOCOL)
	if (shared_network -> failover_peer)
	    omapi_object_dereference ((omapi_object_t **)
				      &shared_network -> failover_peer,
				      file, line);
#endif
#endif /* DEBUG_MEMORY_LEAKAGE */

	return ISC_R_SUCCESS;
}

isc_result_t dhcp_shared_network_signal_handler (omapi_object_t *h,
						 const char *name,
						 va_list ap)
{
	struct shared_network *shared_network;
	isc_result_t status;
	int updatep = 0;

	if (h -> type != dhcp_type_shared_network)
		return ISC_R_INVALIDARG;
	shared_network = (struct shared_network *)h;

	/* Can't write shared_networks yet. */

	/* Try to find some inner object that can take the value. */
	if (h -> inner && h -> inner -> type -> get_value) {
		status = ((*(h -> inner -> type -> signal_handler))
			  (h -> inner, name, ap));
		if (status == ISC_R_SUCCESS)
			return status;
	}
	if (updatep)
		return ISC_R_SUCCESS;
	return ISC_R_NOTFOUND;
}

isc_result_t dhcp_shared_network_stuff_values (omapi_object_t *c,
					       omapi_object_t *id,
					       omapi_object_t *h)
{
	struct shared_network *shared_network;
	isc_result_t status;

	if (h -> type != dhcp_type_shared_network)
		return ISC_R_INVALIDARG;
	shared_network = (struct shared_network *)h;

	/* Can't stuff shared_network values yet. */

	/* Write out the inner object, if any. */
	if (h -> inner && h -> inner -> type -> stuff_values) {
		status = ((*(h -> inner -> type -> stuff_values))
			  (c, id, h -> inner));
		if (status == ISC_R_SUCCESS)
			return status;
	}

	return ISC_R_SUCCESS;
}

isc_result_t dhcp_shared_network_lookup (omapi_object_t **lp,
					 omapi_object_t *id,
					 omapi_object_t *ref)
{
	omapi_value_t *tv = (omapi_value_t *)0;
	isc_result_t status;
	struct shared_network *shared_network;

	/* Can't look up shared_networks yet. */

	/* If we get to here without finding a shared_network, no valid key was
	   specified. */
	if (!*lp)
		return ISC_R_NOKEYS;
	return ISC_R_SUCCESS;
}

isc_result_t dhcp_shared_network_create (omapi_object_t **lp,
					 omapi_object_t *id)
{
	return ISC_R_NOTIMPLEMENTED;
}

isc_result_t dhcp_shared_network_remove (omapi_object_t *lp,
					 omapi_object_t *id)
{
	return ISC_R_NOTIMPLEMENTED;
}