summaryrefslogtreecommitdiff
path: root/runtime/obj.c
blob: 63f1f38cd8d64cd3132f571eb7fa902a020dda65 (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
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
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
/* obj.c
 *
 * This file implements a generic object "class". All other classes can
 * use the service of this base class here to include auto-destruction and
 * other capabilities in a generic manner.
 *
 * As of 2008-02-29, I (rgerhards) am adding support for dynamically loadable
 * objects. In essence, each object will soon be available via its interface,
 * only. Before any object's code is accessed (including global static methods),
 * the caller needs to obtain an object interface. To do so, it needs to provide
 * the object name and the file where the object is expected to reside in. A
 * file may not be given, in which case the object is expected to reside in
 * the rsyslog core. The caller than receives an interface pointer which can
 * be utilized to access all the object's methods. This method enables rsyslog
 * to load library modules on demand. In order to keep overhead low, callers
 * should request object interface only once in the object Init function and
 * free them when they exit. The only exception is when a caller needs to
 * access an object only conditional, in which case a pointer to its interface
 * shall be aquired as need first arises but still be released only on exit
 * or when there definitely is no further need. The whole idea is to limit
 * the very performance-intense act of dynamically loading an objects library.
 * Of course, it is possible to violate this suggestion, but than you should
 * have very good reasoning to do so.
 *
 * Please note that there is one trick we need to do. Each object queries
 * the object interfaces and it does so via objUse(). objUse, however, is
 * part of the obj object's interface (implemented via the file you are
 * just reading). So in order to obtain a pointer to objUse, we need to
 * call it - obviously not possible. One solution would be that objUse is
 * hardcoded into all callers. That, however, would bring us into slight
 * trouble with actually dynamically loaded modules, as we should NOT
 * rely on the OS loader to resolve symbols back to the caller (this
 * is a feature not universally available and highly importable). Of course,
 * we can solve this with a pHostQueryEtryPoint() call. It still sounds
 * somewhat unnatural to call a regular interface function via a special
 * method. So what we do instead is define a special function called
 * objGetObjInterface() which delivers our own interface. That function
 * than will be defined global and be queriable via pHostQueryEtryPoint().
 * I agree, technically this is much the same, but from an architecture
 * point of view it looks cleaner (at least to me).
 * 
 * Please note that there is another egg-hen problem: we use a linked list,
 * which is provided by the linkedList object. However, we need to
 * initialize the linked list before we can provide the UseObj()
 * functionality. That, in turn, would probably be required by the 
 * linkedList object. So the solution is to use a backdoor just to
 * init the linked list and from then on use the usual interfaces.
 *
 * File begun on 2008-01-04 by RGerhards
 *
 * Copyright 2008-2012 Rainer Gerhards and Adiscon GmbH.
 *
 * This file is part of the rsyslog runtime library.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *       http://www.apache.org/licenses/LICENSE-2.0
 *       -or-
 *       see COPYING.ASL20 in the source distribution
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
#include "config.h"

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <assert.h>
#include <pthread.h>

/* how many objects are supported by rsyslogd? */
#define OBJ_NUM_IDS 100 /* TODO change to a linked list?  info: 16 were currently in use 2008-02-29 */

#include "rsyslog.h"
#include "syslogd-types.h"
#include "srUtils.h"
#include "obj.h"
#include "stream.h"
#include "modules.h"
#include "errmsg.h"
#include "cfsysline.h"
#include "unicode-helper.h"
#include "datetime.h"

/* static data */
DEFobjCurrIf(obj) /* we define our own interface, as this is expected by some macros! */
DEFobjCurrIf(var)
DEFobjCurrIf(module)
DEFobjCurrIf(errmsg)
DEFobjCurrIf(strm)
static objInfo_t *arrObjInfo[OBJ_NUM_IDS]; /* array with object information pointers */
pthread_mutex_t mutObjGlobalOp;	/* mutex to guard global operations of the object system */


/* cookies for serialized lines */
#define COOKIE_OBJLINE   '<'
#define COOKIE_PROPLINE  '+'
#define COOKIE_ENDLINE   '>'
#define COOKIE_BLANKLINE '.'

/* forward definitions */
static rsRetVal FindObjInfo(cstr_t *pszObjName, objInfo_t **ppInfo);

/* methods */

/* This is a dummy method to be used when a standard method has not been
 * implemented by an object. Having it allows us to simply call via the 
 * jump table without any NULL pointer checks - which gains quite
 * some performance. -- rgerhards, 2008-01-04
 */
static rsRetVal objInfoNotImplementedDummy(void __attribute__((unused)) *pThis)
{
	return RS_RET_NOT_IMPLEMENTED;
}

/* and now the macro to check if something is not implemented
 * must be provided an objInfo_t pointer.
 */
#define objInfoIsImplemented(pThis, method) \
	(pThis->objMethods[method] != objInfoNotImplementedDummy)

/* construct an object Info object. Each class shall do this on init. The
 * resulting object shall be cached during the lifetime of the class and each
 * object shall receive a reference. A constructor and destructor MUST be provided for all
 * objects, thus they are in the parameter list.
 * pszID is the identifying object name and must point to constant pool memory. It is never freed.
 */
static rsRetVal
InfoConstruct(objInfo_t **ppThis, uchar *pszID, int iObjVers,
              rsRetVal (*pConstruct)(void *), rsRetVal (*pDestruct)(void *),
	      rsRetVal (*pQueryIF)(interface_t*), modInfo_t *pModInfo)
{
	DEFiRet;
	int i;
	objInfo_t *pThis;

	assert(ppThis != NULL);

	if((pThis = calloc(1, sizeof(objInfo_t))) == NULL)
		ABORT_FINALIZE(RS_RET_OUT_OF_MEMORY);

	pThis->pszID = pszID;
	pThis->lenID = ustrlen(pszID);
	pThis->pszName = ustrdup(pszID); /* it's OK if we have NULL ptr, GetName() will deal with that! */
	pThis->iObjVers = iObjVers;
	pThis->QueryIF = pQueryIF;
	pThis->pModInfo = pModInfo;

	pThis->objMethods[0] = pConstruct;
	pThis->objMethods[1] = pDestruct;
	for(i = 2 ; i < OBJ_NUM_METHODS ; ++i) {
		pThis->objMethods[i] = objInfoNotImplementedDummy;
	}

	*ppThis = pThis;

finalize_it:
	RETiRet;
}


/* destruct the objInfo object - must be done only when no more instances exist.
 * rgerhards, 2008-03-10
 */
static rsRetVal
InfoDestruct(objInfo_t **ppThis)
{
	DEFiRet;
	objInfo_t *pThis;

	assert(ppThis != NULL);
	pThis = *ppThis;
	assert(pThis != NULL);

	free(pThis->pszName);
	free(pThis);
	*ppThis = NULL;

	RETiRet;
}


/* set a method handler */
static rsRetVal
InfoSetMethod(objInfo_t *pThis, objMethod_t objMethod, rsRetVal (*pHandler)(void*))
{
	assert(pThis != NULL);
	assert(objMethod > 0 && objMethod < OBJ_NUM_METHODS);
	pThis->objMethods[objMethod] = pHandler;

	return RS_RET_OK;
}

/* destruct the base object properties.
 * rgerhards, 2008-01-29
 */
static rsRetVal
DestructObjSelf(obj_t *pThis)
{
	DEFiRet;

	ISOBJ_assert(pThis);
	free(pThis->pszName);

	RETiRet;
}


/* --------------- object serializiation / deserialization support --------------- */


/* serialize the header of an object
 * pszRecType must be either "Obj" (Object) or "OPB" (Object Property Bag)
 */
static rsRetVal objSerializeHeader(strm_t *pStrm, obj_t *pObj, uchar *pszRecType)
{
	DEFiRet;

	ISOBJ_TYPE_assert(pStrm, strm);
	ISOBJ_assert(pObj);
	assert(!strcmp((char*) pszRecType, "Obj") || !strcmp((char*) pszRecType, "OPB"));

	/* object cookie and serializer version (so far always 1) */
	CHKiRet(strm.WriteChar(pStrm, COOKIE_OBJLINE));
	CHKiRet(strm.Write(pStrm, (uchar*) pszRecType, 3)); /* record types are always 3 octets */
	CHKiRet(strm.WriteChar(pStrm, ':'));
	CHKiRet(strm.WriteChar(pStrm, '1'));

	/* object type, version and string length */
	CHKiRet(strm.WriteChar(pStrm, ':'));
	CHKiRet(strm.Write(pStrm, pObj->pObjInfo->pszID, pObj->pObjInfo->lenID));
	CHKiRet(strm.WriteChar(pStrm, ':'));
	CHKiRet(strm.WriteLong(pStrm, objGetVersion(pObj)));

	/* record trailer */
	CHKiRet(strm.WriteChar(pStrm, ':'));
	CHKiRet(strm.WriteChar(pStrm, '\n'));

finalize_it:
	RETiRet;
}


/* begin serialization of an object
 * rgerhards, 2008-01-06
 */
static rsRetVal
BeginSerialize(strm_t *pStrm, obj_t *pObj)
{
	DEFiRet;

	ISOBJ_TYPE_assert(pStrm, strm);
	ISOBJ_assert(pObj);
	
	CHKiRet(strm.RecordBegin(pStrm));
	CHKiRet(objSerializeHeader(pStrm, pObj, (uchar*) "Obj"));

finalize_it:
	RETiRet;
}
	

/* begin serialization of an object's property bag
 * Note: a property bag is used to serialize some of an objects
 * properties, but not necessarily all. A good example is the queue
 * object, which at some stage needs to serialize a number of its 
 * properties, but not the queue data itself. From the object point
 * of view, a property bag can not be used to re-instantiate an object.
 * Otherwise, the serialization is exactly the same.
 * rgerhards, 2008-01-11
 */
static rsRetVal
BeginSerializePropBag(strm_t *pStrm, obj_t *pObj)
{
	DEFiRet;

	ISOBJ_TYPE_assert(pStrm, strm);
	ISOBJ_assert(pObj);
	
	CHKiRet(strm.RecordBegin(pStrm));
	CHKiRet(objSerializeHeader(pStrm, pObj, (uchar*) "OPB"));

finalize_it:
	RETiRet;
}


/* append a property
 */
static rsRetVal
SerializeProp(strm_t *pStrm, uchar *pszPropName, propType_t propType, void *pUsr)
{
	DEFiRet;
	uchar *pszBuf = NULL;
	size_t lenBuf = 0;
	uchar szBuf[64];
	varType_t vType = VARTYPE_NONE;

	ISOBJ_TYPE_assert(pStrm, strm);
	assert(pszPropName != NULL);

	/*dbgprintf("objSerializeProp: strm %p, propName '%s', type %d, pUsr %p\n", pStrm, pszPropName, propType, pUsr);*/
	/* if we have no user pointer, there is no need to write this property.
	 * TODO: think if that's the righ point of view
	 * rgerhards, 2008-01-06
	 */
	if(pUsr == NULL) {
		ABORT_FINALIZE(RS_RET_OK);
	}

	/* TODO: use the stream functions for data conversion here - should be quicker */

	switch(propType) {
		case PROPTYPE_PSZ:
			pszBuf = (uchar*) pUsr;
			lenBuf = ustrlen(pszBuf);
			vType = VARTYPE_STR;
			break;
		case PROPTYPE_SHORT:
			CHKiRet(srUtilItoA((char*) szBuf, sizeof(szBuf), (long) *((short*) pUsr)));
			pszBuf = szBuf;
			lenBuf = ustrlen(szBuf);
			vType = VARTYPE_NUMBER;
			break;
		case PROPTYPE_INT:
			CHKiRet(srUtilItoA((char*) szBuf, sizeof(szBuf), (long) *((int*) pUsr)));
			pszBuf = szBuf;
			lenBuf = ustrlen(szBuf);
			vType = VARTYPE_NUMBER;
			break;
		case PROPTYPE_LONG:
			CHKiRet(srUtilItoA((char*) szBuf, sizeof(szBuf), *((long*) pUsr)));
			pszBuf = szBuf;
			lenBuf = ustrlen(szBuf);
			vType = VARTYPE_NUMBER;
			break;
		case PROPTYPE_INT64:
			CHKiRet(srUtilItoA((char*) szBuf, sizeof(szBuf), *((int64*) pUsr)));
			pszBuf = szBuf;
			lenBuf = ustrlen(szBuf);
			vType = VARTYPE_NUMBER;
			break;
		case PROPTYPE_CSTR:
			pszBuf = rsCStrGetSzStrNoNULL((cstr_t *) pUsr);
			lenBuf = rsCStrLen((cstr_t*) pUsr);
			vType = VARTYPE_STR;
			break;
		case PROPTYPE_SYSLOGTIME:
			lenBuf = snprintf((char*) szBuf, sizeof(szBuf), "%d:%d:%d:%d:%d:%d:%d:%d:%d:%c:%d:%d",
					  ((syslogTime_t*)pUsr)->timeType,
					  ((syslogTime_t*)pUsr)->year,
					  ((syslogTime_t*)pUsr)->month,
					  ((syslogTime_t*)pUsr)->day,
					  ((syslogTime_t*)pUsr)->hour,
					  ((syslogTime_t*)pUsr)->minute,
					  ((syslogTime_t*)pUsr)->second,
					  ((syslogTime_t*)pUsr)->secfrac,
					  ((syslogTime_t*)pUsr)->secfracPrecision,
					  ((syslogTime_t*)pUsr)->OffsetMode,
					  ((syslogTime_t*)pUsr)->OffsetHour,
					  ((syslogTime_t*)pUsr)->OffsetMinute);
			if(lenBuf > sizeof(szBuf) - 1)
				ABORT_FINALIZE(RS_RET_PROVIDED_BUFFER_TOO_SMALL);
			vType = VARTYPE_SYSLOGTIME;
			pszBuf = szBuf;
			break;
		default:
			dbgprintf("invalid PROPTYPE %d\n", propType);
			break;
	}

	/* cookie */
	CHKiRet(strm.WriteChar(pStrm, COOKIE_PROPLINE));
	/* name */
	CHKiRet(strm.Write(pStrm, pszPropName, ustrlen(pszPropName)));
	CHKiRet(strm.WriteChar(pStrm, ':'));
	/* type */
	CHKiRet(strm.WriteLong(pStrm, (int) vType));
	CHKiRet(strm.WriteChar(pStrm, ':'));
	/* length */
	CHKiRet(strm.WriteLong(pStrm, lenBuf));
	CHKiRet(strm.WriteChar(pStrm, ':'));

	/* data */
	CHKiRet(strm.Write(pStrm, (uchar*) pszBuf, lenBuf));

	/* trailer */
	CHKiRet(strm.WriteChar(pStrm, ':'));
	CHKiRet(strm.WriteChar(pStrm, '\n'));

finalize_it:
	RETiRet;
}


/* end serialization of an object. The caller receives a
 * standard C string, which he must free when no longer needed.
 */
static rsRetVal
EndSerialize(strm_t *pStrm)
{
	DEFiRet;

	assert(pStrm != NULL);

	CHKiRet(strm.WriteChar(pStrm, COOKIE_ENDLINE));
	CHKiRet(strm.Write(pStrm, (uchar*) "End\n", sizeof("END\n") - 1));
	CHKiRet(strm.WriteChar(pStrm, COOKIE_BLANKLINE));
	CHKiRet(strm.WriteChar(pStrm, '\n'));

	CHKiRet(strm.RecordEnd(pStrm));

finalize_it:
	RETiRet;
}


/* define a helper to make code below a bit cleaner (and quicker to write) */
#define NEXTC CHKiRet(strm.ReadChar(pStrm, &c))/*;dbgprintf("c: %c\n", c)*/


/* de-serialize an embedded, non-octect-counted string. This is useful
 * for deserializing the object name inside the header. The string is
 * terminated by the first occurence of the ':' character.
 * rgerhards, 2008-02-29
 */
static rsRetVal
objDeserializeEmbedStr(cstr_t **ppStr, strm_t *pStrm)
{
	DEFiRet;
	uchar c;
	cstr_t *pStr = NULL;

	assert(ppStr != NULL);

	CHKiRet(cstrConstruct(&pStr));

	NEXTC;
	while(c != ':') {
		CHKiRet(cstrAppendChar(pStr, c));
		NEXTC;
	}
	CHKiRet(cstrFinalize(pStr));

	*ppStr = pStr;

finalize_it:
	if(iRet != RS_RET_OK && pStr != NULL)
		cstrDestruct(&pStr);

	RETiRet;
}


/* de-serialize a number */
static rsRetVal objDeserializeNumber(number_t *pNum, strm_t *pStrm)
{
	DEFiRet;
	number_t i;
	int bIsNegative;
	uchar c;

	assert(pNum != NULL);

	NEXTC;
	if(c == '-') {
		bIsNegative = 1;
		NEXTC;
	} else {
		bIsNegative = 0;
	}

	/* we check this so that we get more meaningful error codes */
	if(!isdigit(c)) ABORT_FINALIZE(RS_RET_INVALID_NUMBER);

	i = 0;
	while(isdigit(c)) {
		i = i * 10 + c - '0';
		NEXTC;
	}

	if(c != ':') ABORT_FINALIZE(RS_RET_INVALID_DELIMITER);

	if(bIsNegative)
		i *= -1;

	*pNum = i;
finalize_it:
	RETiRet;
}


/* de-serialize a string, length must be provided but may be 0 */
static rsRetVal objDeserializeStr(cstr_t **ppCStr, int iLen, strm_t *pStrm)
{
	DEFiRet;
	int i;
	uchar c;
	cstr_t *pCStr = NULL;

	assert(ppCStr != NULL);
	assert(iLen >= 0);

	CHKiRet(cstrConstruct(&pCStr));

	NEXTC;
	for(i = 0 ; i < iLen ; ++i) {
		CHKiRet(cstrAppendChar(pCStr, c));
		NEXTC;
	}
	CHKiRet(cstrFinalize(pCStr));

	/* check terminator */
	if(c != ':') ABORT_FINALIZE(RS_RET_INVALID_DELIMITER);

	*ppCStr = pCStr;

finalize_it:
	if(iRet != RS_RET_OK && pCStr != NULL)
		cstrDestruct(&pCStr);

	RETiRet;
}


/* de-serialize a syslogTime -- rgerhards,2008-01-08 */
#define	GETVAL(var)  \
	CHKiRet(objDeserializeNumber(&l, pStrm)); \
	pTime->var = l;
static rsRetVal objDeserializeSyslogTime(syslogTime_t *pTime, strm_t *pStrm)
{
	DEFiRet;
	number_t l;
	uchar c;

	assert(pTime != NULL);

	GETVAL(timeType);
	GETVAL(year);
	GETVAL(month);
	GETVAL(day);
	GETVAL(hour);
	GETVAL(minute);
	GETVAL(second);
	GETVAL(secfrac);
	GETVAL(secfracPrecision);
	/* OffsetMode is a single character! */
	NEXTC; pTime->OffsetMode = c;
	NEXTC; if(c != ':') ABORT_FINALIZE(RS_RET_INVALID_DELIMITER);
	GETVAL(OffsetHour);
	GETVAL(OffsetMinute);

finalize_it:
	RETiRet;
}
#undef GETVAL

/* de-serialize an object header
 * rgerhards, 2008-01-07
 */
static rsRetVal objDeserializeHeader(uchar *pszRecType, cstr_t **ppstrID, int* poVers, strm_t *pStrm)
{
	DEFiRet;
	number_t oVers;
	uchar c;

	assert(ppstrID != NULL);
	assert(poVers != NULL);
	assert(!strcmp((char*) pszRecType, "Obj") || !strcmp((char*) pszRecType, "OPB"));

	/* check header cookie */
	NEXTC; if(c != COOKIE_OBJLINE) ABORT_FINALIZE(RS_RET_INVALID_HEADER);
	NEXTC; if(c != pszRecType[0]) ABORT_FINALIZE(RS_RET_INVALID_HEADER_RECTYPE);
	NEXTC; if(c != pszRecType[1]) ABORT_FINALIZE(RS_RET_INVALID_HEADER_RECTYPE);
	NEXTC; if(c != pszRecType[2]) ABORT_FINALIZE(RS_RET_INVALID_HEADER_RECTYPE);
	NEXTC; if(c != ':') ABORT_FINALIZE(RS_RET_INVALID_HEADER);
	NEXTC; if(c != '1') ABORT_FINALIZE(RS_RET_INVALID_HEADER_VERS);
	NEXTC; if(c != ':') ABORT_FINALIZE(RS_RET_INVALID_HEADER_VERS);

	/* object type and version */
	CHKiRet(objDeserializeEmbedStr(ppstrID, pStrm));
	CHKiRet(objDeserializeNumber(&oVers, pStrm));

	/* and now we skip over the rest until the delemiting \n */
	NEXTC;
	while(c != '\n') {
		NEXTC;
	}

	*poVers = oVers;

finalize_it:
	RETiRet;
}


/* Deserialize a single property. Pointer must be positioned at begin of line. Whole line
 * up until the \n is read.
 */
rsRetVal objDeserializeProperty(var_t *pProp, strm_t *pStrm)
{
	DEFiRet;
	number_t i;
	number_t iLen;
	uchar c;
	int step = 0; /* which step was successful? */
	int64 offs;

	assert(pProp != NULL);

	/* check cookie */
	NEXTC;
	if(c != COOKIE_PROPLINE) {
		/* oops, we've read one char that does not belong to use - unget it first */
		CHKiRet(strm.UnreadChar(pStrm, c));
		ABORT_FINALIZE(RS_RET_NO_PROPLINE);
	}

	/* get the property name first */
	CHKiRet(cstrConstruct(&pProp->pcsName));

	NEXTC;
	while(c != ':') {
		CHKiRet(cstrAppendChar(pProp->pcsName, c));
		NEXTC;
	}
	CHKiRet(cstrFinalize(pProp->pcsName));
	step = 1;

	/* property type */
	CHKiRet(objDeserializeNumber(&i, pStrm));
	pProp->varType = i;
	step = 2;

	/* size (needed for strings) */
	CHKiRet(objDeserializeNumber(&iLen, pStrm));
	step = 3;

	/* we now need to deserialize the value */
	switch(pProp->varType) {
		case VARTYPE_STR:
			CHKiRet(objDeserializeStr(&pProp->val.pStr, iLen, pStrm));
			break;
		case VARTYPE_NUMBER:
			CHKiRet(objDeserializeNumber(&pProp->val.num, pStrm));
			break;
		case VARTYPE_SYSLOGTIME:
			CHKiRet(objDeserializeSyslogTime(&pProp->val.vSyslogTime, pStrm));
			break;
		default:
			dbgprintf("invalid VARTYPE %d\n", pProp->varType);
			break;
	}
	step = 4;

	/* we should now be at the end of the line. So the next char must be \n */
	NEXTC;
	if(c != '\n') ABORT_FINALIZE(RS_RET_INVALID_PROPFRAME);

finalize_it:
	if(Debug && iRet != RS_RET_OK && iRet != RS_RET_NO_PROPLINE) {
		strm.GetCurrOffset(pStrm, &offs);
		dbgprintf("error %d deserializing property name, offset %lld, step %d\n",
			  iRet, offs, step);
		if(step >= 1) {
			dbgprintf("error property name: '%s'\n", rsCStrGetSzStrNoNULL(pProp->pcsName));
		}
		if(step >= 2) {
			dbgprintf("error var type: '%d'\n", pProp->varType);
		}
		if(step >= 3) {
			dbgprintf("error len: '%d'\n", (int) iLen);
		}
		if(step >= 4) {
			switch(pProp->varType) {
				case VARTYPE_STR:
					dbgprintf("error data string: '%s'\n",
						  rsCStrGetSzStrNoNULL(pProp->val.pStr));
					break;
				case VARTYPE_NUMBER:
					dbgprintf("error number: %d\n", (int) pProp->val.num);
					break;
				case VARTYPE_SYSLOGTIME:
					dbgprintf("syslog time was successfully parsed (but "
					          "is not displayed\n");
					break;
				default:
					break;
			}
		}
	}
	RETiRet;
}


/* de-serialize an object trailer. This does not get any data but checks if the
 * format is ok.
 * rgerhards, 2008-01-07
 */
static rsRetVal objDeserializeTrailer(strm_t *pStrm)
{
	DEFiRet;
	uchar c;

	/* check header cookie */
	NEXTC; if(c != COOKIE_ENDLINE) ABORT_FINALIZE(RS_RET_INVALID_TRAILER);
	NEXTC; if(c != 'E')  ABORT_FINALIZE(RS_RET_INVALID_TRAILER);
	NEXTC; if(c != 'n')  ABORT_FINALIZE(RS_RET_INVALID_TRAILER);
	NEXTC; if(c != 'd')  ABORT_FINALIZE(RS_RET_INVALID_TRAILER);
	NEXTC; if(c != '\n') ABORT_FINALIZE(RS_RET_INVALID_TRAILER);
	NEXTC; if(c != COOKIE_BLANKLINE) ABORT_FINALIZE(RS_RET_INVALID_TRAILER);
	NEXTC; if(c != '\n') ABORT_FINALIZE(RS_RET_INVALID_TRAILER);

finalize_it:
	RETiRet;
}



/* This method tries to recover a serial store if it got out of sync.
 * To do so, it scans the line beginning cookies and waits for the object
 * cookie. If that is found, control is returned. If the store is exhausted,
 * we will receive an RS_RET_EOF error as part of NEXTC, which will also
 * terminate this function. So we may either return with somehting that
 * looks like a valid object or end of store.
 * rgerhards, 2008-01-07
 */
static rsRetVal objDeserializeTryRecover(strm_t *pStrm)
{
	DEFiRet;
	uchar c;
	int bWasNL;
	int bRun;

	assert(pStrm != NULL);
	bRun = 1;
	bWasNL = 0;

	while(bRun) {
		NEXTC;
		if(c == '\n')
			bWasNL = 1;
		else {
			if(bWasNL == 1 && c == COOKIE_OBJLINE)
				bRun = 0; /* we found it! */
			else
				bWasNL = 0;
		}
	}

	CHKiRet(strm.UnreadChar(pStrm, c));

finalize_it:
	dbgprintf("deserializer has possibly been able to re-sync and recover, state %d\n", iRet);
	RETiRet;
}


/* De-serialize the properties of an object. This includes processing
 * of the trailer. Header must already have been processed.
 * rgerhards, 2008-01-11
 */
static rsRetVal objDeserializeProperties(obj_t *pObj, rsRetVal (*objSetProperty)(), strm_t *pStrm)
{
	DEFiRet;
	var_t *pVar = NULL;

	ISOBJ_assert(pObj);
	ISOBJ_TYPE_assert(pStrm, strm);

	CHKiRet(var.Construct(&pVar));
	CHKiRet(var.ConstructFinalize(pVar));

	iRet = objDeserializeProperty(pVar, pStrm);
	while(iRet == RS_RET_OK) {
		CHKiRet(objSetProperty(pObj, pVar));
		/* re-init var object - TODO: method of var! */
		rsCStrDestruct(&pVar->pcsName); /* no longer needed */
		if(pVar->varType == VARTYPE_STR) {
			if(pVar->val.pStr != NULL)
				rsCStrDestruct(&pVar->val.pStr);
		}
		iRet = objDeserializeProperty(pVar, pStrm);
	}

	if(iRet != RS_RET_NO_PROPLINE)
		FINALIZE;

	CHKiRet(objDeserializeTrailer(pStrm)); /* do trailer checks */
finalize_it:
	if(pVar != NULL)
		var.Destruct(&pVar);

	RETiRet;
}


/* De-Serialize an object.
 * Params: Pointer to object Pointer (pObj) (like a obj_t**, but can not do that due to compiler warning)
 * expected object ID (to check against), a fixup function that can modify the object before it is finalized
 * and a user pointer that is to be passed to that function in addition to the object. The fixup function
 * pointer may be NULL, in which case none is called.
 * The caller must destruct the created object.
 * rgerhards, 2008-01-07
 */
static rsRetVal
Deserialize(void *ppObj, uchar *pszTypeExpected, strm_t *pStrm, rsRetVal (*fFixup)(obj_t*,void*), void *pUsr)
{
	DEFiRet;
	rsRetVal iRetLocal;
	obj_t *pObj = NULL;
	int oVers = 0;   /* keep compiler happy, but it is totally useless but takes up some execution time... */
	cstr_t *pstrID = NULL;
	objInfo_t *pObjInfo;

	assert(ppObj != NULL);
	assert(pszTypeExpected != NULL);
	ISOBJ_TYPE_assert(pStrm, strm);

	/* we de-serialize the header. if all goes well, we are happy. However, if
	 * we experience a problem, we try to recover. We do this by skipping to
	 * the next object header. This is defined via the line-start cookies. In
	 * worst case, we exhaust the queue, but then we receive EOF return state,
	 * from objDeserializeTryRecover(), what will cause us to ultimately give up.
	 * rgerhards, 2008-07-08
	 */
	do {
		iRetLocal = objDeserializeHeader((uchar*) "Obj", &pstrID, &oVers, pStrm);
		if(iRetLocal != RS_RET_OK) {
			dbgprintf("objDeserialize error %d during header processing - trying to recover\n", iRetLocal);
			CHKiRet(objDeserializeTryRecover(pStrm));
		}
	} while(iRetLocal != RS_RET_OK);

	if(rsCStrSzStrCmp(pstrID, pszTypeExpected, ustrlen(pszTypeExpected))) /* TODO: optimize strlen() - caller shall provide */
		ABORT_FINALIZE(RS_RET_INVALID_OID);

	CHKiRet(FindObjInfo(pstrID, &pObjInfo));

	CHKiRet(pObjInfo->objMethods[objMethod_CONSTRUCT](&pObj));

	/* we got the object, now we need to fill the properties */
	CHKiRet(objDeserializeProperties(pObj, pObjInfo->objMethods[objMethod_SETPROPERTY], pStrm));

	/* check if we need to call a fixup function that modifies the object
	 * before it is finalized. -- rgerhards, 2008-01-13
	 */
	if(fFixup != NULL)
		CHKiRet(fFixup(pObj, pUsr));

	/* we have a valid object, let's finalize our work and return */
	if(objInfoIsImplemented(pObjInfo, objMethod_CONSTRUCTION_FINALIZER))
		CHKiRet(pObjInfo->objMethods[objMethod_CONSTRUCTION_FINALIZER](pObj));

	*((obj_t**) ppObj) = pObj;

finalize_it:
	if(iRet != RS_RET_OK && pObj != NULL)
		free(pObj); /* TODO: check if we can call destructor 2008-01-13 rger */

	if(pstrID != NULL)
		rsCStrDestruct(&pstrID);

	RETiRet;
}


/* De-Serialize an object, with known constructur and destructor. Params like Deserialize().
 * rgerhards, 2012-11-03
 */
rsRetVal
objDeserializeWithMethods(void *ppObj, uchar *pszTypeExpected, int lenTypeExpected, strm_t *pStrm, rsRetVal (*fFixup)(obj_t*,void*), void *pUsr, rsRetVal (*objConstruct)(), rsRetVal (*objConstructFinalize)(), rsRetVal (*objDeserialize)())
{
	DEFiRet;
	rsRetVal iRetLocal;
	obj_t *pObj = NULL;
	int oVers = 0;   /* keep compiler happy, but it is totally useless but takes up some execution time... */
	cstr_t *pstrID = NULL;

	assert(ppObj != NULL);
	assert(pszTypeExpected != NULL);
	ISOBJ_TYPE_assert(pStrm, strm);

	/* we de-serialize the header. if all goes well, we are happy. However, if
	 * we experience a problem, we try to recover. We do this by skipping to
	 * the next object header. This is defined via the line-start cookies. In
	 * worst case, we exhaust the queue, but then we receive EOF return state,
	 * from objDeserializeTryRecover(), what will cause us to ultimately give up.
	 * rgerhards, 2008-07-08
	 */
	do {
		iRetLocal = objDeserializeHeader((uchar*) "Obj", &pstrID, &oVers, pStrm);
		if(iRetLocal != RS_RET_OK) {
			dbgprintf("objDeserialize error %d during header processing - "
				  "trying to recover\n", iRetLocal);
			CHKiRet(objDeserializeTryRecover(pStrm));
		}
	} while(iRetLocal != RS_RET_OK);

	if(rsCStrSzStrCmp(pstrID, pszTypeExpected, lenTypeExpected))
		ABORT_FINALIZE(RS_RET_INVALID_OID);

	CHKiRet(objConstruct(&pObj));

	/* we got the object, now we need to fill the properties */
	CHKiRet(objDeserialize(pObj, pStrm));
	CHKiRet(objDeserializeTrailer(pStrm)); /* do trailer checks */

	/* check if we need to call a fixup function that modifies the object
	 * before it is finalized. -- rgerhards, 2008-01-13
	 */
	if(fFixup != NULL)
		CHKiRet(fFixup(pObj, pUsr));

	/* we have a valid object, let's finalize our work and return */
	if(objConstructFinalize != NULL) {
		CHKiRet(objConstructFinalize(pObj));
	}

	*((obj_t**) ppObj) = pObj;

finalize_it:
	if(iRet != RS_RET_OK && pObj != NULL)
		free(pObj); /* TODO: check if we can call destructor 2008-01-13 rger */

	if(pstrID != NULL)
		rsCStrDestruct(&pstrID);

	RETiRet;
}

/* This is a dummy deserializer, to be used for the delete queue reader
 * specifically. This is kind of a hack, but also to be replace (hopefully) soon
 * by totally different code. So let's make it as simple as possible...
 * rgerhards, 2012-11-06
 */
rsRetVal
objDeserializeDummy(obj_t __attribute__((unused)) *pObj, strm_t *pStrm)
{
	DEFiRet;
	var_t *pVar = NULL;

	CHKiRet(var.Construct(&pVar));
	CHKiRet(var.ConstructFinalize(pVar));

	iRet = objDeserializeProperty(pVar, pStrm);
	while(iRet == RS_RET_OK) {
		/* this loop does actually NOGHTING but read the file... */
		/* re-init var object - TODO: method of var! */
		rsCStrDestruct(&pVar->pcsName); /* no longer needed */
		if(pVar->varType == VARTYPE_STR) {
			if(pVar->val.pStr != NULL)
				rsCStrDestruct(&pVar->val.pStr);
		}
		iRet = objDeserializeProperty(pVar, pStrm);
	}
finalize_it:
	if(iRet == RS_RET_NO_PROPLINE)
		iRet = RS_RET_OK; /* NO_PROPLINE is OK and a kind of EOF! */
	if(pVar != NULL)
		var.Destruct(&pVar);
	RETiRet;
}


/* De-Serialize an object, but treat it as property bag.
 * rgerhards, 2008-01-11
 */
rsRetVal
objDeserializeObjAsPropBag(obj_t *pObj, strm_t *pStrm)
{
	DEFiRet;
	rsRetVal iRetLocal;
	cstr_t *pstrID = NULL;
	int oVers = 0;   /* after all, it is totally useless but takes up some execution time...    */
	objInfo_t *pObjInfo;

	ISOBJ_assert(pObj);
	ISOBJ_TYPE_assert(pStrm, strm);

	/* we de-serialize the header. if all goes well, we are happy. However, if
	 * we experience a problem, we try to recover. We do this by skipping to
	 * the next object header. This is defined via the line-start cookies. In
	 * worst case, we exhaust the queue, but then we receive EOF return state
	 * from objDeserializeTryRecover(), what will cause us to ultimately give up.
	 * rgerhards, 2008-07-08
	 */
	do {
		iRetLocal = objDeserializeHeader((uchar*) "Obj", &pstrID, &oVers, pStrm);
		if(iRetLocal != RS_RET_OK) {
			dbgprintf("objDeserializeObjAsPropBag error %d during header - trying to recover\n", iRetLocal);
			CHKiRet(objDeserializeTryRecover(pStrm));
		}
	} while(iRetLocal != RS_RET_OK);

	if(rsCStrSzStrCmp(pstrID, pObj->pObjInfo->pszID, pObj->pObjInfo->lenID))
		ABORT_FINALIZE(RS_RET_INVALID_OID);

	CHKiRet(FindObjInfo(pstrID, &pObjInfo));

	/* we got the object, now we need to fill the properties */
	CHKiRet(objDeserializeProperties(pObj, pObjInfo->objMethods[objMethod_SETPROPERTY], pStrm));

finalize_it:
	if(pstrID != NULL)
		rsCStrDestruct(&pstrID);

	RETiRet;
}



/* De-Serialize an object property bag. As a property bag contains only partial properties,
 * it is not instanciable. Thus, the caller must provide a pointer of an already-instanciated
 * object of the correct type.
 * Params: Pointer to object (pObj)
 * Pointer to be passed to the function
 * The caller must destruct the created object.
 * rgerhards, 2008-01-07
 */
static rsRetVal
DeserializePropBag(obj_t *pObj, strm_t *pStrm)
{
	DEFiRet;
	rsRetVal iRetLocal;
	cstr_t *pstrID = NULL;
	int oVers;
	objInfo_t *pObjInfo;

	ISOBJ_assert(pObj);
	ISOBJ_TYPE_assert(pStrm, strm);

	/* we de-serialize the header. if all goes well, we are happy. However, if
	 * we experience a problem, we try to recover. We do this by skipping to
	 * the next object header. This is defined via the line-start cookies. In
	 * worst case, we exhaust the queue, but then we receive EOF return state
	 * from objDeserializeTryRecover(), what will cause us to ultimately give up.
	 * rgerhards, 2008-07-08
	 */
	do {
		iRetLocal = objDeserializeHeader((uchar*) "OPB", &pstrID, &oVers, pStrm);
		if(iRetLocal != RS_RET_OK) {
			dbgprintf("objDeserializePropBag error %d during header - trying to recover\n", iRetLocal);
			CHKiRet(objDeserializeTryRecover(pStrm));
		}
	} while(iRetLocal != RS_RET_OK);

	if(rsCStrSzStrCmp(pstrID, pObj->pObjInfo->pszID, pObj->pObjInfo->lenID))
		ABORT_FINALIZE(RS_RET_INVALID_OID);

	CHKiRet(FindObjInfo(pstrID, &pObjInfo));

	/* we got the object, now we need to fill the properties */
	CHKiRet(objDeserializeProperties(pObj, pObjInfo->objMethods[objMethod_SETPROPERTY], pStrm));

finalize_it:
	if(pstrID != NULL)
		rsCStrDestruct(&pstrID);

	RETiRet;
}

#undef NEXTC /* undef helper macro */


/* --------------- end object serializiation / deserialization support --------------- */


/* set the object (instance) name
 * rgerhards, 2008-01-29
 * TODO: change the naming to a rsCStr obj! (faster)
 */
static rsRetVal
SetName(obj_t *pThis, uchar *pszName)
{
	DEFiRet;

	free(pThis->pszName);
	CHKmalloc(pThis->pszName = ustrdup(pszName));

finalize_it:
	RETiRet;
}


/* get the object (instance) name
 * Note that we use a non-standard calling convention. Thus function must never
 * fail, else we run into real big problems. So it must make sure that at least someting
 * is returned.
 * rgerhards, 2008-01-30
 */
static uchar *
GetName(obj_t *pThis)
{
	uchar *ret;
	uchar szName[128];

	BEGINfunc
	ISOBJ_assert(pThis);

	if(pThis->pszName == NULL) {
		snprintf((char*)szName, sizeof(szName)/sizeof(uchar), "%s %p", objGetClassName(pThis), pThis);
		SetName(pThis, szName);
		/* looks strange, but we NEED to re-check because if there was an
		 * error in objSetName(), the pointer may still be NULL
		 */
		if(pThis->pszName == NULL) {
			ret = objGetClassName(pThis);
		} else {
			ret = pThis->pszName;
		}
	} else {
		ret = pThis->pszName;
	}

	ENDfunc
	return ret;
}


/* Find the objInfo object for the current object
 * rgerhards, 2008-02-29
 */
static rsRetVal
FindObjInfo(cstr_t *pstrOID, objInfo_t **ppInfo)
{
	DEFiRet;
	int bFound;
	int i;

	assert(pstrOID != NULL);
	assert(ppInfo != NULL);

	bFound = 0;
	i = 0;
	while(!bFound && i < OBJ_NUM_IDS) {
		if(arrObjInfo[i] != NULL && !rsCStrSzStrCmp(pstrOID, arrObjInfo[i]->pszID, arrObjInfo[i]->lenID)) {
			bFound = 1;
			break;
		}
		++i;
	}

	if(!bFound)
		ABORT_FINALIZE(RS_RET_NOT_FOUND);

	*ppInfo = arrObjInfo[i];

finalize_it:
	if(iRet == RS_RET_OK) {
		/* DEV DEBUG ONLY dbgprintf("caller requested object '%s', found at index %d\n", (*ppInfo)->pszID, i);*/
		/*EMPTY BY INTENSION*/;
	} else {
		dbgprintf("caller requested object '%s', not found (iRet %d)\n", rsCStrGetSzStr(pstrOID), iRet);
	}

	RETiRet;
}


/* register a classes' info pointer, so that we can reference it later, if needed to
 * (e.g. for de-serialization support).
 * rgerhards, 2008-01-07
 * In this function, we look for a free space in the object table. While we do so, we
 * also detect if the same object has already been registered, which is not valid.
 * rgerhards, 2008-02-29
 */
static rsRetVal
RegisterObj(uchar *pszObjName, objInfo_t *pInfo)
{
	DEFiRet;
	int bFound;
	int i;

	assert(pszObjName != NULL);
	assert(pInfo != NULL);

	bFound = 0;
	i = 0;
	while(!bFound && i < OBJ_NUM_IDS && arrObjInfo[i] != NULL) {
		if(   arrObjInfo[i] != NULL
		   && !ustrcmp(arrObjInfo[i]->pszID, pszObjName)) {
			bFound = 1;
			break;
		}
		++i;
	}

	if(bFound)           ABORT_FINALIZE(RS_RET_OBJ_ALREADY_REGISTERED);
	if(i >= OBJ_NUM_IDS) ABORT_FINALIZE(RS_RET_OBJ_REGISTRY_OUT_OF_SPACE);

	arrObjInfo[i] = pInfo;
	/* DEV debug only: dbgprintf("object '%s' successfully registered with index %d, qIF %p\n", pszObjName, i, pInfo->QueryIF); */

finalize_it:
	if(iRet != RS_RET_OK) {
		errmsg.LogError(0, NO_ERRCODE, "registering object '%s' failed with error code %d", pszObjName, iRet);
	}

	RETiRet;
}


/* deregister a classes' info pointer, usually called because the class is unloaded.
 * After deregistration, the class can no longer be accessed, except if it is reloaded.
 * rgerhards, 2008-03-10
 */
static rsRetVal
UnregisterObj(uchar *pszObjName)
{
	DEFiRet;
	int bFound;
	int i;

	assert(pszObjName != NULL);

	bFound = 0;
	i = 0;
	while(!bFound && i < OBJ_NUM_IDS) {
		if(   arrObjInfo[i] != NULL
		   && !ustrcmp(arrObjInfo[i]->pszID, pszObjName)) {
			bFound = 1;
			break;
		}
		++i;
	}

	if(!bFound)
		ABORT_FINALIZE(RS_RET_OBJ_NOT_REGISTERED);

	InfoDestruct(&arrObjInfo[i]);
	/* DEV debug only: dbgprintf("object '%s' successfully unregistered with index %d\n", pszObjName, i); */

finalize_it:
	if(iRet != RS_RET_OK) {
		dbgprintf("unregistering object '%s' failed with error code %d\n", pszObjName, iRet);
	}

	RETiRet;
}


/* This function shall be called by anyone who would like to use an object. It will
 * try to locate the object, load it into memory if not already present and return
 * a pointer to the objects interface.
 * rgerhards, 2008-02-29
 */
static rsRetVal
UseObj(char *srcFile, uchar *pObjName, uchar *pObjFile, interface_t *pIf)
{
	DEFiRet;
	cstr_t *pStr = NULL;
	objInfo_t *pObjInfo;


	/* DEV debug only: dbgprintf("source file %s requests object '%s', ifIsLoaded %d\n", srcFile, pObjName, pIf->ifIsLoaded); */
	pthread_mutex_lock(&mutObjGlobalOp);

	if(pIf->ifIsLoaded == 1) {
		ABORT_FINALIZE(RS_RET_OK); /* we are already set */
	}
	if(pIf->ifIsLoaded == 2) {
		ABORT_FINALIZE(RS_RET_LOAD_ERROR); /* we had a load error and can not continue */
	}

	/* we must be careful that we do not enter in infinite loop if an error occurs during
	 * loading a module. ModLoad emits an error message in such cases and that potentially
	 * can trigger the same code here. So we initially set the module state to "load error"
	 * and set it to "fully initialized" when the load succeeded. It's a bit hackish, but
	 * looks like a good solution. -- rgerhards, 2008-03-07
	 */
	pIf->ifIsLoaded = 2;

	CHKiRet(rsCStrConstructFromszStr(&pStr, pObjName));
	iRet = FindObjInfo(pStr, &pObjInfo);
	if(iRet == RS_RET_NOT_FOUND) {
		/* in this case, we need to see if we can dynamically load the object */
		if(pObjFile == NULL) {
			FINALIZE; /* no chance, we have lost... */
		} else {
			CHKiRet(module.Load(pObjFile, 0, NULL));
			/* NOW, we must find it or we have a problem... */
			CHKiRet(FindObjInfo(pStr, &pObjInfo));
		}
	} else if(iRet != RS_RET_OK) {
		FINALIZE; /* give up */
	}

	/* if we reach this point, we have a valid pObjInfo */
	if(pObjFile != NULL) { /* NULL means core module */
		module.Use(srcFile, pObjInfo->pModInfo); /* increase refcount */
	}

	CHKiRet(pObjInfo->QueryIF(pIf));
	pIf->ifIsLoaded = 1; /* we are happy */

finalize_it:
	pthread_mutex_unlock(&mutObjGlobalOp);

	if(pStr != NULL)
		rsCStrDestruct(&pStr);

	RETiRet;
}


/* This function shall be called when a caller is done with an object. Its primary
 * purpose is to keep the reference count correct, which is highly important for
 * modules residing in loadable modules.
 * rgerhards, 2008-03-10
 */
static rsRetVal
ReleaseObj(char *srcFile, uchar *pObjName, uchar *pObjFile, interface_t *pIf)
{
	DEFiRet;
	cstr_t *pStr = NULL;
	objInfo_t *pObjInfo;


	/* dev debug only dbgprintf("source file %s releasing object '%s', ifIsLoaded %d\n", srcFile, pObjName, pIf->ifIsLoaded); */
	pthread_mutex_lock(&mutObjGlobalOp);

	if(pObjFile == NULL)
		FINALIZE; /* if it is not a lodable module, we do not need to do anything... */

	if(pIf->ifIsLoaded == 0) {
		FINALIZE; /* we are not loaded - this is perfectly OK... */
	} else if(pIf->ifIsLoaded == 2) {
		pIf->ifIsLoaded = 0; /* clean up */
		FINALIZE; /* we had a load error and can not/must not continue */
	}

	CHKiRet(rsCStrConstructFromszStr(&pStr, pObjName));
	CHKiRet(FindObjInfo(pStr, &pObjInfo));

	/* if we reach this point, we have a valid pObjInfo */
	module.Release(srcFile, &pObjInfo->pModInfo); /* decrease refcount */

	pIf->ifIsLoaded = 0; /* indicated "no longer valid" */

finalize_it:
	pthread_mutex_unlock(&mutObjGlobalOp);

	if(pStr != NULL)
		rsCStrDestruct(&pStr);

	RETiRet;
}


/* queryInterface function
 * rgerhards, 2008-02-29
 */
BEGINobjQueryInterface(obj)
CODESTARTobjQueryInterface(obj)
	if(pIf->ifVersion != objCURR_IF_VERSION) { /* check for current version, increment on each change */
		ABORT_FINALIZE(RS_RET_INTERFACE_NOT_SUPPORTED);
	}

	/* ok, we have the right interface, so let's fill it
	 * Please note that we may also do some backwards-compatibility
	 * work here (if we can support an older interface version - that,
	 * of course, also affects the "if" above).
	 */
	pIf->UseObj = UseObj;
	pIf->ReleaseObj = ReleaseObj;
	pIf->InfoConstruct = InfoConstruct;
	pIf->DestructObjSelf = DestructObjSelf;
	pIf->BeginSerializePropBag = BeginSerializePropBag;
	pIf->InfoSetMethod = InfoSetMethod;
	pIf->BeginSerialize = BeginSerialize;
	pIf->SerializeProp = SerializeProp;
	pIf->EndSerialize = EndSerialize;
	pIf->RegisterObj = RegisterObj;
	pIf->UnregisterObj = UnregisterObj;
	pIf->Deserialize = Deserialize;
	pIf->DeserializePropBag = DeserializePropBag;
	pIf->SetName = SetName;
	pIf->GetName = GetName;
finalize_it:
ENDobjQueryInterface(obj)


/* This function returns a pointer to our own interface. It is used as the
 * hook that every object (including dynamically loaded ones) can use to
 * obtain a pointer to our interface which than can be used to obtain
 * pointers to any other interface in the system. This function must be
 * externally visible because of its special nature.
 * rgerhards, 2008-02-29 [nice - will have that date the next time in 4 years ;)]
 */
rsRetVal
objGetObjInterface(obj_if_t *pIf)
{
	DEFiRet;
	assert(pIf != NULL);
	objQueryInterface(pIf);
	RETiRet;
}


/* exit our class
 * rgerhards, 2008-03-11
 */
rsRetVal
objClassExit(void)
{
	DEFiRet;
	/* release objects we no longer need */
	objRelease(strm, CORE_COMPONENT);
	objRelease(var, CORE_COMPONENT);
	objRelease(module, CORE_COMPONENT);
	objRelease(errmsg, CORE_COMPONENT);

	/* TODO: implement the class exits! */
#if 0
	cfsyslineExit(pModInfo);
	varClassExit(pModInfo);
#endif
	errmsgClassExit();
	moduleClassExit();
	RETiRet;
}


/* initialize our own class 
 * Please note that this also initializes those classes that we rely on.
 * Though this is a bit dirty, we need to do it - otherwise we can't get
 * around that bootstrap problem. We need to face the fact the the obj 
 * class is a little different from the rest of the system, as it provides
 * the core class loader functionality.
 * rgerhards, 2008-02-29
 */
rsRetVal
objClassInit(modInfo_t *pModInfo)
{
	pthread_mutexattr_t mutAttr;
	int i;
	DEFiRet;
	
	/* first, initialize the object system itself. This must be done
	 * before any other object is created.
	 */
	for(i = 0 ; i < OBJ_NUM_IDS ; ++i) {
		arrObjInfo[i] = NULL;
	}

	/* the mutex must be recursive, because objects may call into other
	 * object identifiers recursively.
	 */
	pthread_mutexattr_init(&mutAttr);
	pthread_mutexattr_settype(&mutAttr, PTHREAD_MUTEX_RECURSIVE);
	pthread_mutex_init(&mutObjGlobalOp, &mutAttr);

	/* request objects we use */
	CHKiRet(objGetObjInterface(&obj)); /* get ourselves ;) */

	/* init classes we use (limit to as few as possible!) */
	CHKiRet(errmsgClassInit(pModInfo));
	CHKiRet(datetimeClassInit(pModInfo));
	CHKiRet(cfsyslineInit());
	CHKiRet(varClassInit(pModInfo));
	CHKiRet(moduleClassInit(pModInfo));
	CHKiRet(strmClassInit(pModInfo));
	CHKiRet(objUse(var, CORE_COMPONENT));
	CHKiRet(objUse(module, CORE_COMPONENT));
	CHKiRet(objUse(errmsg, CORE_COMPONENT));
	CHKiRet(objUse(strm, CORE_COMPONENT));

finalize_it:
	RETiRet;
}

/* vi:set ai:
 */