summaryrefslogtreecommitdiffstats
path: root/epan/dissectors/packet-doip.c
blob: 76674c1f2ca785070e65dcedf64eb7519e9f6a48 (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
/* packet-doip.c
 * Routines for DoIP (ISO13400) protocol packet disassembly
 *
 * Wireshark - Network traffic analyzer
 * By Gerald Combs <gerald@wireshark.org>
 * Copyright 1998 Gerald Combs
 *
 * This program 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
 * of the License, or (at your option) any later version.
 *
 * This program 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 this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#include "config.h"
#include <epan/packet.h>
#include <epan/uat.h>
#include <epan/expert.h>

#include "packet-tcp.h"
#include "packet-tls.h"
#include "packet-doip.h"

void proto_register_doip(void);
void proto_reg_handoff_doip(void);


#define DOIP_PORT                                  13400
#define DOIP_TLS_PORT                               3496

#define DOIP_GENERIC_NACK                          0x0000
#define DOIP_VEHICLE_IDENTIFICATION_REQ            0x0001
#define DOIP_VEHICLE_IDENTIFICATION_REQ_EID        0x0002
#define DOIP_VEHICLE_IDENTIFICATION_REQ_VIN        0x0003
#define DOIP_VEHICLE_ANNOUNCEMENT_MESSAGE          0x0004
#define DOIP_ROUTING_ACTIVATION_REQUEST            0x0005
#define DOIP_ROUTING_ACTIVATION_RESPONSE           0x0006
#define DOIP_ALIVE_CHECK_REQUEST                   0x0007
#define DOIP_ALIVE_CHECK_RESPONSE                  0x0008
#define DOIP_ENTITY_STATUS_REQUEST                 0x4001
#define DOIP_ENTITY_STATUS_RESPONSE                0x4002
#define DOIP_POWER_INFORMATION_REQUEST             0x4003
#define DOIP_POWER_INFORMATION_RESPONSE            0x4004
#define DOIP_DIAGNOSTIC_MESSAGE                    0x8001
#define DOIP_DIAGNOSTIC_MESSAGE_ACK                0x8002
#define DOIP_DIAGNOSTIC_MESSAGE_NACK               0x8003


/* Header */
#define DOIP_VERSION_OFFSET                        0
#define DOIP_VERSION_LEN                           1
#define DOIP_INV_VERSION_OFFSET                    (DOIP_VERSION_OFFSET + DOIP_VERSION_LEN)
#define DOIP_INV_VERSION_LEN                       1
#define DOIP_TYPE_OFFSET                           (DOIP_INV_VERSION_OFFSET + DOIP_INV_VERSION_LEN)
#define DOIP_TYPE_LEN                              2
#define DOIP_LENGTH_OFFSET                         (DOIP_TYPE_OFFSET + DOIP_TYPE_LEN)
#define DOIP_LENGTH_LEN                            4
#define DOIP_HEADER_LEN                            (DOIP_LENGTH_OFFSET + DOIP_LENGTH_LEN)

#define RESERVED_VER                               0x00
#define ISO13400_2010                              0x01
#define ISO13400_2012                              0x02
#define ISO13400_2019                              0x03
#define ISO13400_2019_AMD1                         0x04
#define DEFAULT_VALUE                              0xFF


/* Generic NACK */
#define DOIP_GENERIC_NACK_OFFSET                   DOIP_HEADER_LEN
#define DOIP_GENERIC_NACK_LEN                      1


/* Common */
#define DOIP_COMMON_VIN_LEN                        17
#define DOIP_COMMON_EID_LEN                        6


/*  Vehicle identifcation request */
#define DOIP_VEHICLE_IDENTIFICATION_EID_OFFSET     DOIP_HEADER_LEN
#define DOIP_VEHICLE_IDENTIFICATION_VIN_OFFSET     DOIP_HEADER_LEN


/* Routing activation request */
#define DOIP_ROUTING_ACTIVATION_REQ_SRC_OFFSET     DOIP_HEADER_LEN
#define DOIP_ROUTING_ACTIVATION_REQ_SRC_LEN        2
#define DOIP_ROUTING_ACTIVATION_REQ_TYPE_OFFSET    (DOIP_ROUTING_ACTIVATION_REQ_SRC_OFFSET + DOIP_ROUTING_ACTIVATION_REQ_SRC_LEN)
#define DOIP_ROUTING_ACTIVATION_REQ_TYPE_LEN_V1    2
#define DOIP_ROUTING_ACTIVATION_REQ_TYPE_LEN_V2    1
#define DOIP_ROUTING_ACTIVATION_REQ_ISO_OFFSET_V1  (DOIP_ROUTING_ACTIVATION_REQ_TYPE_OFFSET + DOIP_ROUTING_ACTIVATION_REQ_TYPE_LEN_V1)
#define DOIP_ROUTING_ACTIVATION_REQ_ISO_OFFSET_V2  (DOIP_ROUTING_ACTIVATION_REQ_TYPE_OFFSET + DOIP_ROUTING_ACTIVATION_REQ_TYPE_LEN_V2)
#define DOIP_ROUTING_ACTIVATION_REQ_ISO_LEN        4
#define DOIP_ROUTING_ACTIVATION_REQ_OEM_OFFSET_V1  (DOIP_ROUTING_ACTIVATION_REQ_ISO_OFFSET_V1 + DOIP_ROUTING_ACTIVATION_REQ_ISO_LEN)
#define DOIP_ROUTING_ACTIVATION_REQ_OEM_OFFSET_V2  (DOIP_ROUTING_ACTIVATION_REQ_ISO_OFFSET_V2 + DOIP_ROUTING_ACTIVATION_REQ_ISO_LEN)
#define DOIP_ROUTING_ACTIVATION_REQ_OEM_LEN        4


/* Routing activation response */
#define DOIP_ROUTING_ACTIVATION_RES_TESTER_OFFSET  DOIP_HEADER_LEN
#define DOIP_ROUTING_ACTIVATION_RES_TESTER_LEN     2
#define DOIP_ROUTING_ACTIVATION_RES_ENTITY_OFFSET  (DOIP_ROUTING_ACTIVATION_RES_TESTER_OFFSET + DOIP_ROUTING_ACTIVATION_RES_TESTER_LEN)
#define DOIP_ROUTING_ACTIVATION_RES_ENTITY_LEN     2
#define DOIP_ROUTING_ACTIVATION_RES_CODE_OFFSET    (DOIP_ROUTING_ACTIVATION_RES_ENTITY_OFFSET + DOIP_ROUTING_ACTIVATION_RES_ENTITY_LEN)
#define DOIP_ROUTING_ACTIVATION_RES_CODE_LEN       1
#define DOIP_ROUTING_ACTIVATION_RES_ISO_OFFSET     (DOIP_ROUTING_ACTIVATION_RES_CODE_OFFSET + DOIP_ROUTING_ACTIVATION_RES_CODE_LEN)
#define DOIP_ROUTING_ACTIVATION_RES_ISO_LEN        4
#define DOIP_ROUTING_ACTIVATION_RES_OEM_OFFSET     (DOIP_ROUTING_ACTIVATION_RES_ISO_OFFSET + DOIP_ROUTING_ACTIVATION_RES_ISO_LEN)
#define DOIP_ROUTING_ACTIVATION_RES_OEM_LEN        4


/* Vehicle announcement message */
#define DOIP_VEHICLE_ANNOUNCEMENT_VIN_OFFSET       DOIP_HEADER_LEN
#define DOIP_VEHICLE_ANNOUNCEMENT_ADDRESS_OFFSET   (DOIP_VEHICLE_ANNOUNCEMENT_VIN_OFFSET + DOIP_COMMON_VIN_LEN)
#define DOIP_VEHICLE_ANNOUNCEMENT_ADDRESS_LEN      2
#define DOIP_VEHICLE_ANNOUNCEMENT_EID_OFFSET       (DOIP_VEHICLE_ANNOUNCEMENT_ADDRESS_OFFSET + DOIP_VEHICLE_ANNOUNCEMENT_ADDRESS_LEN)
#define DOIP_VEHICLE_ANNOUNCEMENT_GID_OFFSET       (DOIP_VEHICLE_ANNOUNCEMENT_EID_OFFSET + DOIP_COMMON_EID_LEN)
#define DOIP_VEHICLE_ANNOUNCEMENT_GID_LEN          6
#define DOIP_VEHICLE_ANNOUNCEMENT_ACTION_OFFSET    (DOIP_VEHICLE_ANNOUNCEMENT_GID_OFFSET + DOIP_VEHICLE_ANNOUNCEMENT_GID_LEN)
#define DOIP_VEHICLE_ANNOUNCEMENT_ACTION_LEN       1
#define DOIP_VEHICLE_ANNOUNCEMENT_SYNC_OFFSET      (DOIP_VEHICLE_ANNOUNCEMENT_ACTION_OFFSET + DOIP_VEHICLE_ANNOUNCEMENT_ACTION_LEN)
#define DOIP_VEHICLE_ANNOUNCEMENT_SYNC_LEN         1


/* Alive check response */
#define DOIP_ALIVE_CHECK_RESPONSE_SOURCE_OFFSET    DOIP_HEADER_LEN
#define DOIP_ALIVE_CHECK_RESPONSE_SOURCE_LEN       2


/* Entity status response */
#define DOIP_ENTITY_STATUS_RESPONSE_NODE_OFFSET    DOIP_HEADER_LEN
#define DOIP_ENTITY_STATUS_RESPONSE_NODE_LEN       1
#define DOIP_ENTITY_STATUS_RESPONSE_MCTS_OFFSET    (DOIP_ENTITY_STATUS_RESPONSE_NODE_OFFSET + DOIP_ENTITY_STATUS_RESPONSE_NODE_LEN)
#define DOIP_ENTITY_STATUS_RESPONSE_MCTS_LEN       1
#define DOIP_ENTITY_STATUS_RESPONSE_NCTS_OFFSET    (DOIP_ENTITY_STATUS_RESPONSE_MCTS_OFFSET + DOIP_ENTITY_STATUS_RESPONSE_MCTS_LEN)
#define DOIP_ENTITY_STATUS_RESPONSE_NCTS_LEN       1
#define DOIP_ENTITY_STATUS_RESPONSE_MDS_OFFSET     (DOIP_ENTITY_STATUS_RESPONSE_NCTS_OFFSET + DOIP_ENTITY_STATUS_RESPONSE_NCTS_LEN)
#define DOIP_ENTITY_STATUS_RESPONSE_MDS_LEN        4


/* Diagnostic power mode information response */
#define DOIP_POWER_MODE_OFFSET                     DOIP_HEADER_LEN
#define DOIP_POWER_MODE_LEN                        1


/* Common */
#define DOIP_DIAG_COMMON_SOURCE_OFFSET             DOIP_HEADER_LEN
#define DOIP_DIAG_COMMON_SOURCE_LEN                2
#define DOIP_DIAG_COMMON_TARGET_OFFSET             (DOIP_DIAG_COMMON_SOURCE_OFFSET + DOIP_DIAG_COMMON_SOURCE_LEN)
#define DOIP_DIAG_COMMON_TARGET_LEN                2


/* Diagnostic message */
#define DOIP_DIAG_MESSAGE_DATA_OFFSET              (DOIP_DIAG_COMMON_TARGET_OFFSET + DOIP_DIAG_COMMON_TARGET_LEN)


/* Diagnostic message ACK */
#define DOIP_DIAG_MESSAGE_ACK_CODE_OFFSET          (DOIP_DIAG_COMMON_TARGET_OFFSET + DOIP_DIAG_COMMON_TARGET_LEN)
#define DOIP_DIAG_MESSAGE_ACK_CODE_LEN             1
#define DOIP_DIAG_MESSAGE_ACK_PREVIOUS_OFFSET      (DOIP_DIAG_MESSAGE_ACK_CODE_OFFSET + DOIP_DIAG_MESSAGE_ACK_CODE_LEN)


/* Diagnostic message NACK */
#define DOIP_DIAG_MESSAGE_NACK_CODE_OFFSET         (DOIP_DIAG_COMMON_TARGET_OFFSET + DOIP_DIAG_COMMON_TARGET_LEN)
#define DOIP_DIAG_MESSAGE_NACK_CODE_LEN            1
#define DOIP_DIAG_MESSAGE_NACK_PREVIOUS_OFFSET     (DOIP_DIAG_MESSAGE_NACK_CODE_OFFSET + DOIP_DIAG_MESSAGE_NACK_CODE_LEN)



/*
 * Enums
 */

/* Header */
/* Protocol version */
static const value_string doip_versions[] = {
    { RESERVED_VER,         "Reserved" },
    { ISO13400_2010,        "DoIP ISO/DIS 13400-2:2010" },
    { ISO13400_2012,        "DoIP ISO 13400-2:2012" },
    { ISO13400_2019,        "DoIP ISO 13400-2:2019" },
    { ISO13400_2019_AMD1,   "DoIP ISO 13400-2:2019 Amd1 (experimental)" },
    { DEFAULT_VALUE,        "Default value for vehicle identification request messages" },
    { 0, NULL }
};

/* Payload type */
static const value_string doip_payloads[] = {
    { DOIP_GENERIC_NACK,                    "Generic DoIP header NACK" },
    { DOIP_VEHICLE_IDENTIFICATION_REQ,      "Vehicle identification request" },
    { DOIP_VEHICLE_IDENTIFICATION_REQ_EID,  "Vehicle identification request with EID" },
    { DOIP_VEHICLE_IDENTIFICATION_REQ_VIN,  "Vehicle identification request with VIN" },
    { DOIP_VEHICLE_ANNOUNCEMENT_MESSAGE,     "Vehicle announcement message/vehicle identification response message" },
    { DOIP_ROUTING_ACTIVATION_REQUEST, "Routing activation request" },
    { DOIP_ROUTING_ACTIVATION_RESPONSE, "Routing activation response" },
    { DOIP_ALIVE_CHECK_REQUEST, "Alive check request" },
    { DOIP_ALIVE_CHECK_RESPONSE, "Alive check response" },
    { DOIP_ENTITY_STATUS_REQUEST, "DoIP entity status request" },
    { DOIP_ENTITY_STATUS_RESPONSE, "DoIP entity status response" },
    { DOIP_POWER_INFORMATION_REQUEST, "Diagnostic power mode information request" },
    { DOIP_POWER_INFORMATION_RESPONSE, "Diagnostic power mode information response" },
    { DOIP_DIAGNOSTIC_MESSAGE, "Diagnostic message" },
    { DOIP_DIAGNOSTIC_MESSAGE_ACK, "Diagnostic message ACK" },
    { DOIP_DIAGNOSTIC_MESSAGE_NACK, "Diagnostic message NACK" },
    { 0, NULL }
};


/* Generic NACK */
static const value_string nack_codes[] = {
    { 0x00, "Incorrect pattern format" },
    { 0x01, "Unknown payload type" },
    { 0x02, "Message too large" },
    { 0x03, "Out of memory" },
    { 0x04, "Invalid payload length" },
    { 0, NULL }
};


/* Routing activation request */
static const value_string activation_types[] = {
    { 0x00, "Default" },
    { 0x01, "WWH-OBD" },
    { 0xE0, "Central security" },
    { 0, NULL }
};


/* Routing activation response */
static const value_string activation_codes[] = {
    { 0x00, "Routing activation denied due to unknown source address." },
    { 0x01, "Routing activation denied because all concurrently supported TCP_DATA sockets are registered and active." },
    { 0x02, "Routing activation denied because an SA different from the table connection entry was received on the already activated TCP_DATA socket." },
    { 0x03, "Routing activation denied because the SA is already registered and active on a different TCP_DATA socket." },
    { 0x04, "Routing activation denied due to missing authentication." },
    { 0x05, "Routing activation denied due to rejected confirmation." },
    { 0x06, "Routing activation denied due to unsupported routing activation type." },
    { 0x07, "Routing activation denied due to request for encrypted connection via TLS." },
    { 0x08, "Reserved by ISO 13400." },
    { 0x09, "Reserved by ISO 13400." },
    { 0x0A, "Reserved by ISO 13400." },
    { 0x0B, "Reserved by ISO 13400." },
    { 0x0C, "Reserved by ISO 13400." },
    { 0x0D, "Reserved by ISO 13400." },
    { 0x0E, "Reserved by ISO 13400." },
    { 0x0F, "Reserved by ISO 13400." },
    { 0x10, "Routing successfully activated." },
    { 0x11, "Routing will be activated; confirmation required." },
    { 0, NULL }
};


/* Vehicle announcement message */
/* Action code */
static const value_string action_codes[] = {
    { 0x00, "No further action required" },
    { 0x01, "Reserved by ISO 13400" },
    { 0x02, "Reserved by ISO 13400" },
    { 0x03, "Reserved by ISO 13400" },
    { 0x04, "Reserved by ISO 13400" },
    { 0x05, "Reserved by ISO 13400" },
    { 0x06, "Reserved by ISO 13400" },
    { 0x07, "Reserved by ISO 13400" },
    { 0x08, "Reserved by ISO 13400" },
    { 0x09, "Reserved by ISO 13400" },
    { 0x0A, "Reserved by ISO 13400" },
    { 0x0B, "Reserved by ISO 13400" },
    { 0x0C, "Reserved by ISO 13400" },
    { 0x0D, "Reserved by ISO 13400" },
    { 0x0E, "Reserved by ISO 13400" },
    { 0x0F, "Reserved by ISO 13400" },
    { 0x10, "Routing activation required to initiate central security" },
    { 0, NULL }
};

/* Sync status */
static const value_string sync_status[] = {
    { 0x00, "VIN and/or GID are synchronized" },
    { 0x01, "Reserved by ISO 13400" },
    { 0x02, "Reserved by ISO 13400" },
    { 0x03, "Reserved by ISO 13400" },
    { 0x04, "Reserved by ISO 13400" },
    { 0x05, "Reserved by ISO 13400" },
    { 0x06, "Reserved by ISO 13400" },
    { 0x07, "Reserved by ISO 13400" },
    { 0x08, "Reserved by ISO 13400" },
    { 0x09, "Reserved by ISO 13400" },
    { 0x0A, "Reserved by ISO 13400" },
    { 0x0B, "Reserved by ISO 13400" },
    { 0x0C, "Reserved by ISO 13400" },
    { 0x0D, "Reserved by ISO 13400" },
    { 0x0E, "Reserved by ISO 13400" },
    { 0x0F, "Reserved by ISO 13400" },
    { 0x10, "Incomplete: VIN and GID are NOT synchronized" },
    { 0, NULL }
};

/* Entity status response */
/* Node type */
static const value_string node_types[] = {
    { 0x00, "DoIP gateway" },
    { 0x01, "DoIp node" },
    { 0, NULL }
};


/* Diagnostic power mode information response */
/* Power mode */
static const value_string power_modes[] = {
    { 0x00, "not ready" },
    { 0x01, "ready" },
    { 0x02, "not supported" },
    { 0, NULL }
};


/* Diagnostic message ACK */
static const value_string diag_ack_codes[] = {
    { 0x00, "ACK" },
    { 0, NULL }
};


/* Diagnostic message NACK */
static const value_string diag_nack_codes[] = {
    { 0x00, "Reserved by ISO 13400" },
    { 0x01, "Reserved by ISO 13400" },
    { 0x02, "Invalid source address" },
    { 0x03, "Unknown target address" },
    { 0x04, "Diagnostic message too large" },
    { 0x05, "Out of memory" },
    { 0x06, "Target unreachable" },
    { 0x07, "Unknown network" },
    { 0x08, "Transport protocol error" },
    { 0, NULL }
};



/*
 * Config
 */

static gboolean doip_hide_address_names = TRUE;

 /*
 * Fields
 */

/* DoIP header */
static int hf_doip_version = -1;
static int hf_doip_inv_version = -1;
static int hf_doip_type = -1;
static int hf_doip_length = -1;


/* Generic NACK */
static int hf_generic_nack_code = -1;


/* Common */
static int hf_reserved_iso = -1;
static int hf_reserved_oem = -1;


/* Routing activation request */
static int hf_activation_type_v1 = -1;
static int hf_activation_type_v2 = -1;


/* Routing activation response */
static int hf_tester_logical_address = -1;
static int hf_tester_logical_address_name = -1;
static int hf_response_code = -1;


/* Vehicle announcement message */
static int hf_logical_address = -1;
static int hf_logical_address_name = -1;
static int hf_gid = -1;
static int hf_futher_action = -1;
static int hf_sync_status = -1;


/* Diagnostic power mode information response */
static int hf_power_mode = -1;


/* Entity status response */
static int hf_node_type = -1;
static int hf_max_sockets = -1;
static int hf_current_sockets = -1;
static int hf_max_data_size = -1;


/* Common */
static int hf_vin = -1;
static int hf_eid = -1;
static int hf_source_address = -1;
static int hf_source_address_name = -1;
static int hf_target_address = -1;
static int hf_target_address_name = -1;
static int hf_previous = -1;


/* Diagnostic message */
static int hf_data = -1;


/* Diagnostic message ACK */
static int hf_ack_code = -1;


/* Diagnostic message NACK */
static int hf_nack_code = -1;



/*
 * Trees
 */
static gint ett_doip = -1;
static gint ett_header = -1;
static gint ett_address = -1;


/* Misc */
static dissector_handle_t doip_handle;
static dissector_handle_t uds_handle;
static gint proto_doip    = -1;


/* expert info items */
static expert_field ef_doip_illegal_length_field = EI_INIT;


/*
 * UATs
 */

typedef struct _generic_one_id_string {
    guint   id;
    gchar  *name;
} generic_one_id_string_t;

static void
doip_uat_free_key(gpointer key) {
    wmem_free(wmem_epan_scope(), key);
}

static void
simple_free(gpointer data) {
    /* we need to free because of the g_strdup in post_update*/
    g_free(data);
}

/* ID -> Name */
static void *
copy_generic_one_id_string_cb(void* n, const void* o, size_t size _U_) {
    generic_one_id_string_t* new_rec = (generic_one_id_string_t*)n;
    const generic_one_id_string_t* old_rec = (const generic_one_id_string_t*)o;

    new_rec->name = g_strdup(old_rec->name);
    new_rec->id = old_rec->id;
    return new_rec;
}

static bool
update_generic_one_identifier_16bit(void *r, char **err) {
    generic_one_id_string_t *rec = (generic_one_id_string_t *)r;

    if (rec->id > 0xffff) {
        *err = ws_strdup_printf("We currently only support 16 bit identifiers (ID: %i  Name: %s)", rec->id, rec->name);
        return FALSE;
    }

    if (rec->name == NULL || rec->name[0] == 0) {
        *err = g_strdup("Name cannot be empty");
        return FALSE;
    }

    return TRUE;
}

static void
free_generic_one_id_string_cb(void*r) {
    generic_one_id_string_t* rec = (generic_one_id_string_t*)r;
    /* freeing result of g_strdup */
    g_free(rec->name);
    rec->name = NULL;
}

static void
post_update_one_id_string_template_cb(generic_one_id_string_t *data, guint data_num, GHashTable *ht) {
    guint   i;
    int    *key = NULL;

    for (i = 0; i < data_num; i++) {
        key = wmem_new(wmem_epan_scope(), int);
        *key = data[i].id;

        g_hash_table_insert(ht, key, g_strdup(data[i].name));
    }
}

static char*
ht_lookup_name(GHashTable* ht, unsigned int identifier) {
    char           *tmp = NULL;
    unsigned int   *id = NULL;

    if (ht == NULL) {
        return NULL;
    }

    id = wmem_new(wmem_epan_scope(), unsigned int);
    *id = (unsigned int)identifier;
    tmp = (char *)g_hash_table_lookup(ht, id);
    wmem_free(wmem_epan_scope(), id);

    return tmp;
}

/*
 * UAT DoIP Diagnostic Addresses
 */
#define DATAFILE_DOIP_DIAG_ADDRESSES "DoIP_diagnostic_addresses"

static GHashTable *data_doip_diag_addresses = NULL;
static generic_one_id_string_t* doip_diag_addresses = NULL;
static guint doip_diag_address_count = 0;

UAT_HEX_CB_DEF(doip_diag_addresses, id, generic_one_id_string_t)
UAT_CSTRING_CB_DEF(doip_diag_addresses, name, generic_one_id_string_t)

static void
post_update_doip_diag_addresses(void) {
    /* destroy old hash table, if it exists */
    if (data_doip_diag_addresses) {
        g_hash_table_destroy(data_doip_diag_addresses);
        data_doip_diag_addresses = NULL;
    }

    /* create new hash table */
    data_doip_diag_addresses = g_hash_table_new_full(g_int_hash, g_int_equal, &doip_uat_free_key, &simple_free);
    post_update_one_id_string_template_cb(doip_diag_addresses, doip_diag_address_count, data_doip_diag_addresses);
}

static proto_item *
doip_prototree_add_with_resolv(proto_tree* doip_tree, int hfindex, int hfindex_name, tvbuff_t* tvb, const gint start, gint length, const guint encoding, guint *diag_addr) {
    guint diag_addr_tmp;
    proto_item *ti;
    proto_tree *tree;

    ti = proto_tree_add_item_ret_uint(doip_tree, hfindex, tvb, start, length, encoding, &diag_addr_tmp);
    const gchar *name = ht_lookup_name(data_doip_diag_addresses, diag_addr_tmp);
    if (name != NULL) {
        proto_item_append_text(ti, " (%s)", name);
        tree = proto_item_add_subtree(ti, ett_address);
        ti = proto_tree_add_string(tree, hfindex_name, tvb, start, length, name);

        if (doip_hide_address_names) {
            proto_item_set_hidden(ti);
        }
    }

    if (diag_addr != NULL) {
        *diag_addr = diag_addr_tmp;
    }

    return ti;
}

/*
 * UAT DoIP Payload Types
 */
#define DATAFILE_DOIP_PAYLOAD_TYPES "DoIP_payload_types"

static GHashTable *data_doip_payload_types = NULL;
static generic_one_id_string_t* doip_payload_types = NULL;
static guint doip_payload_type_count = 0;

UAT_HEX_CB_DEF(doip_payload_types, id, generic_one_id_string_t)
UAT_CSTRING_CB_DEF(doip_payload_types, name, generic_one_id_string_t)

static void
post_update_doip_payload_types(void) {
    /* destroy old hash table, if it exists */
    if (data_doip_payload_types) {
        g_hash_table_destroy(data_doip_payload_types);
        data_doip_payload_types = NULL;
    }

    /* create new hash table */
    data_doip_payload_types = g_hash_table_new_full(g_int_hash, g_int_equal, &doip_uat_free_key, &simple_free);
    post_update_one_id_string_template_cb(doip_payload_types, doip_payload_type_count, data_doip_payload_types);
}

static const gchar*
resolve_doip_payload_type(guint16 payload_type, gboolean is_col)
{
    const gchar *tmp = ht_lookup_name(data_doip_payload_types, payload_type);

    /* lets look at the static values, if nothing is configured */
    if (tmp == NULL) {
        tmp = try_val_to_str(payload_type, doip_payloads);
    }

    /* no configured or standardized name known */
    if (tmp != NULL) {
        if (is_col) {
            return tmp;
        } else {
            return wmem_strdup_printf(wmem_packet_scope(), "%s (0x%04x)", tmp, payload_type);
        }
    }

    /* just give back unknown */
    if (is_col) {
        return wmem_strdup_printf(wmem_packet_scope(), "0x%04x Unknown Payload", payload_type);
    } else {
        return wmem_strdup_printf(wmem_packet_scope(), "Unknown (0x%04x)", payload_type);
    }
}

static void
add_header(tvbuff_t *tvb, packet_info *pinfo, proto_tree *doip_tree)
{
    guint32 len;
    guint32 payload_type;

    proto_tree *subtree = proto_tree_add_subtree(doip_tree, tvb, DOIP_VERSION_OFFSET, DOIP_HEADER_LEN, ett_header, NULL, "Header");
    proto_tree_add_item(subtree, hf_doip_version, tvb, DOIP_VERSION_OFFSET, DOIP_VERSION_LEN, ENC_BIG_ENDIAN);
    proto_tree_add_item(subtree, hf_doip_inv_version, tvb, DOIP_INV_VERSION_OFFSET, DOIP_INV_VERSION_LEN, ENC_BIG_ENDIAN);
    payload_type = tvb_get_guint16(tvb, DOIP_TYPE_OFFSET, ENC_BIG_ENDIAN);
    proto_tree_add_uint_format(subtree, hf_doip_type, tvb, DOIP_TYPE_OFFSET, DOIP_TYPE_LEN, payload_type, "Type: %s", resolve_doip_payload_type(payload_type, false));
    proto_tree_add_item_ret_uint(subtree, hf_doip_length, tvb, DOIP_LENGTH_OFFSET, DOIP_LENGTH_LEN, ENC_BIG_ENDIAN, &len);

    if (tvb_captured_length(tvb) < len) {
        proto_tree_add_expert(doip_tree, pinfo, &ef_doip_illegal_length_field, tvb, DOIP_LENGTH_OFFSET, DOIP_LENGTH_LEN);
        col_append_str(pinfo->cinfo, COL_INFO, " [DoIP Length Field: Illegal Value]");
    }
}


static void
add_generic_header_nack_fields(proto_tree *doip_tree, tvbuff_t *tvb)
{
    proto_tree_add_item(doip_tree, hf_generic_nack_code, tvb, DOIP_GENERIC_NACK_OFFSET, DOIP_GENERIC_NACK_LEN, ENC_NA);
}


static void
add_vehicle_identification_eid_fields(proto_tree *doip_tree, tvbuff_t *tvb)
{
    proto_tree_add_item(doip_tree, hf_eid, tvb, DOIP_VEHICLE_IDENTIFICATION_EID_OFFSET, DOIP_COMMON_EID_LEN, ENC_NA);
}


static void
add_vehicle_identification_vin_fields(proto_tree *doip_tree, tvbuff_t *tvb)
{
    proto_tree_add_item(doip_tree, hf_vin, tvb, DOIP_VEHICLE_IDENTIFICATION_VIN_OFFSET, DOIP_COMMON_VIN_LEN, ENC_ASCII | ENC_NA);
}


static void
add_routing_activation_request_fields(proto_tree *doip_tree, tvbuff_t *tvb, guint8 version)
{
    doip_prototree_add_with_resolv(doip_tree, hf_source_address, hf_source_address_name, tvb, DOIP_ROUTING_ACTIVATION_REQ_SRC_OFFSET, DOIP_ROUTING_ACTIVATION_REQ_SRC_LEN, ENC_BIG_ENDIAN, NULL);

    if (version == ISO13400_2010) {
        proto_tree_add_item(doip_tree, hf_activation_type_v1, tvb, DOIP_ROUTING_ACTIVATION_REQ_TYPE_OFFSET, DOIP_ROUTING_ACTIVATION_REQ_TYPE_LEN_V1, ENC_NA);
        proto_tree_add_item(doip_tree, hf_reserved_iso, tvb, DOIP_ROUTING_ACTIVATION_REQ_ISO_OFFSET_V1, DOIP_ROUTING_ACTIVATION_REQ_ISO_LEN, ENC_BIG_ENDIAN);

        if ( tvb_bytes_exist(tvb, DOIP_ROUTING_ACTIVATION_REQ_OEM_OFFSET_V1, DOIP_ROUTING_ACTIVATION_REQ_OEM_LEN) ) {
            proto_tree_add_item(doip_tree, hf_reserved_oem, tvb, DOIP_ROUTING_ACTIVATION_REQ_OEM_OFFSET_V1, DOIP_ROUTING_ACTIVATION_REQ_OEM_LEN, ENC_BIG_ENDIAN);
        }
    } else if ((version == ISO13400_2012) || (version == ISO13400_2019)) {
        proto_tree_add_item(doip_tree, hf_activation_type_v2, tvb, DOIP_ROUTING_ACTIVATION_REQ_TYPE_OFFSET, DOIP_ROUTING_ACTIVATION_REQ_TYPE_LEN_V2, ENC_NA);
        proto_tree_add_item(doip_tree, hf_reserved_iso, tvb, DOIP_ROUTING_ACTIVATION_REQ_ISO_OFFSET_V2, DOIP_ROUTING_ACTIVATION_REQ_ISO_LEN, ENC_BIG_ENDIAN);

        if ( tvb_bytes_exist(tvb, DOIP_ROUTING_ACTIVATION_REQ_OEM_OFFSET_V2, DOIP_ROUTING_ACTIVATION_REQ_OEM_LEN) ) {
            proto_tree_add_item(doip_tree, hf_reserved_oem, tvb, DOIP_ROUTING_ACTIVATION_REQ_OEM_OFFSET_V2, DOIP_ROUTING_ACTIVATION_REQ_OEM_LEN, ENC_BIG_ENDIAN);
        }
    }
}


static void
add_routing_activation_response_fields(proto_tree *doip_tree, tvbuff_t *tvb)
{
    doip_prototree_add_with_resolv(doip_tree, hf_tester_logical_address, hf_tester_logical_address_name, tvb, DOIP_ROUTING_ACTIVATION_RES_TESTER_OFFSET, DOIP_ROUTING_ACTIVATION_RES_TESTER_LEN, ENC_BIG_ENDIAN, NULL);
    doip_prototree_add_with_resolv(doip_tree, hf_source_address, hf_source_address_name, tvb, DOIP_ROUTING_ACTIVATION_RES_ENTITY_OFFSET, DOIP_ROUTING_ACTIVATION_RES_ENTITY_LEN, ENC_BIG_ENDIAN, NULL);
    proto_tree_add_item(doip_tree, hf_response_code, tvb, DOIP_ROUTING_ACTIVATION_RES_CODE_OFFSET, DOIP_ROUTING_ACTIVATION_RES_CODE_LEN, ENC_NA);
    proto_tree_add_item(doip_tree, hf_reserved_iso, tvb, DOIP_ROUTING_ACTIVATION_RES_ISO_OFFSET, DOIP_ROUTING_ACTIVATION_RES_ISO_LEN, ENC_BIG_ENDIAN);

    if ( tvb_bytes_exist(tvb, DOIP_ROUTING_ACTIVATION_RES_OEM_OFFSET, DOIP_ROUTING_ACTIVATION_RES_OEM_LEN) ) {
        proto_tree_add_item(doip_tree, hf_reserved_oem, tvb, DOIP_ROUTING_ACTIVATION_RES_OEM_OFFSET, DOIP_ROUTING_ACTIVATION_RES_OEM_LEN, ENC_BIG_ENDIAN);
    }
}


static void
add_vehicle_announcement_message_fields(proto_tree *doip_tree, tvbuff_t *tvb)
{
    proto_tree_add_item(doip_tree, hf_vin, tvb, DOIP_VEHICLE_ANNOUNCEMENT_VIN_OFFSET, DOIP_COMMON_VIN_LEN, ENC_ASCII | ENC_NA);
    doip_prototree_add_with_resolv(doip_tree, hf_logical_address, hf_logical_address_name, tvb, DOIP_VEHICLE_ANNOUNCEMENT_ADDRESS_OFFSET, DOIP_VEHICLE_ANNOUNCEMENT_ADDRESS_LEN, ENC_BIG_ENDIAN, NULL);
    proto_tree_add_item(doip_tree, hf_eid, tvb, DOIP_VEHICLE_ANNOUNCEMENT_EID_OFFSET, DOIP_COMMON_EID_LEN, ENC_NA);
    proto_tree_add_item(doip_tree, hf_gid, tvb, DOIP_VEHICLE_ANNOUNCEMENT_GID_OFFSET, DOIP_VEHICLE_ANNOUNCEMENT_GID_LEN, ENC_NA);
    proto_tree_add_item(doip_tree, hf_futher_action, tvb, DOIP_VEHICLE_ANNOUNCEMENT_ACTION_OFFSET, DOIP_VEHICLE_ANNOUNCEMENT_ACTION_LEN, ENC_BIG_ENDIAN);

    if ( tvb_bytes_exist(tvb, DOIP_VEHICLE_ANNOUNCEMENT_SYNC_OFFSET, DOIP_VEHICLE_ANNOUNCEMENT_SYNC_LEN) ) {
        /* Not part of version 1 and optional in version 2. */
        proto_tree_add_item(doip_tree, hf_sync_status, tvb, DOIP_VEHICLE_ANNOUNCEMENT_SYNC_OFFSET, DOIP_VEHICLE_ANNOUNCEMENT_SYNC_LEN, ENC_BIG_ENDIAN);
    }
}


static void
add_alive_check_response_fields(proto_tree *doip_tree, tvbuff_t *tvb)
{
    doip_prototree_add_with_resolv(doip_tree, hf_source_address, hf_source_address_name, tvb, DOIP_ALIVE_CHECK_RESPONSE_SOURCE_OFFSET, DOIP_ALIVE_CHECK_RESPONSE_SOURCE_LEN, ENC_BIG_ENDIAN, NULL);
}


static void
add_entity_status_response_fields(proto_tree *doip_tree, tvbuff_t *tvb)
{
    proto_tree_add_item(doip_tree, hf_node_type, tvb, DOIP_ENTITY_STATUS_RESPONSE_NODE_OFFSET, DOIP_ENTITY_STATUS_RESPONSE_NODE_LEN, ENC_NA);
    proto_tree_add_item(doip_tree, hf_max_sockets, tvb, DOIP_ENTITY_STATUS_RESPONSE_MCTS_OFFSET, DOIP_ENTITY_STATUS_RESPONSE_MCTS_LEN, ENC_NA);
    proto_tree_add_item(doip_tree, hf_current_sockets, tvb, DOIP_ENTITY_STATUS_RESPONSE_NCTS_OFFSET, DOIP_ENTITY_STATUS_RESPONSE_NCTS_LEN, ENC_NA);
    if ( tvb_bytes_exist(tvb, DOIP_ENTITY_STATUS_RESPONSE_MDS_OFFSET, DOIP_ENTITY_STATUS_RESPONSE_MDS_LEN) ) {
        proto_tree_add_item(doip_tree, hf_max_data_size, tvb, DOIP_ENTITY_STATUS_RESPONSE_MDS_OFFSET, DOIP_ENTITY_STATUS_RESPONSE_MDS_LEN, ENC_BIG_ENDIAN);
    }
}


static void
add_power_mode_information_response_fields(proto_tree *doip_tree, tvbuff_t *tvb)
{
    proto_tree_add_item(doip_tree, hf_power_mode, tvb, DOIP_POWER_MODE_OFFSET, DOIP_POWER_MODE_LEN, ENC_NA);
}


static void
add_diagnostic_message_fields(proto_tree *doip_tree, tvbuff_t *tvb, packet_info *pinfo, proto_tree *parent_tree)
{
    doip_info_t doip_info;
    guint32 tmp;

    doip_prototree_add_with_resolv(doip_tree, hf_source_address, hf_source_address_name, tvb, DOIP_DIAG_COMMON_SOURCE_OFFSET, DOIP_DIAG_COMMON_SOURCE_LEN, ENC_BIG_ENDIAN, &tmp);
    doip_info.source_address = tmp;
    doip_prototree_add_with_resolv(doip_tree, hf_target_address, hf_target_address_name, tvb, DOIP_DIAG_COMMON_TARGET_OFFSET, DOIP_DIAG_COMMON_TARGET_LEN, ENC_BIG_ENDIAN, &tmp);
    doip_info.target_address = tmp;

    if (uds_handle != 0) {
        call_dissector_with_data(uds_handle, tvb_new_subset_length(tvb, DOIP_DIAG_MESSAGE_DATA_OFFSET, -1), pinfo, parent_tree, &doip_info);
    } else if (tvb_reported_length_remaining(tvb, DOIP_DIAG_MESSAGE_DATA_OFFSET) > 0) {
        proto_tree_add_item(doip_tree, hf_data, tvb, DOIP_DIAG_MESSAGE_DATA_OFFSET, tvb_reported_length_remaining(tvb, DOIP_DIAG_MESSAGE_DATA_OFFSET), ENC_NA);
    }
}


static void
add_diagnostic_message_ack_fields(proto_tree *doip_tree, tvbuff_t *tvb)
{
    doip_prototree_add_with_resolv(doip_tree, hf_source_address, hf_source_address_name, tvb, DOIP_DIAG_COMMON_SOURCE_OFFSET, DOIP_DIAG_COMMON_SOURCE_LEN, ENC_BIG_ENDIAN, NULL);
    doip_prototree_add_with_resolv(doip_tree, hf_target_address, hf_target_address_name, tvb, DOIP_DIAG_COMMON_TARGET_OFFSET, DOIP_DIAG_COMMON_TARGET_LEN, ENC_BIG_ENDIAN, NULL);
    proto_tree_add_item(doip_tree, hf_ack_code, tvb, DOIP_DIAG_MESSAGE_ACK_CODE_OFFSET, DOIP_DIAG_MESSAGE_ACK_CODE_LEN, ENC_NA);

    if (tvb_captured_length_remaining(tvb, DOIP_DIAG_MESSAGE_ACK_PREVIOUS_OFFSET) > 0) {
        proto_tree_add_item(doip_tree, hf_previous, tvb, DOIP_DIAG_MESSAGE_ACK_PREVIOUS_OFFSET, tvb_captured_length_remaining(tvb, DOIP_DIAG_MESSAGE_ACK_PREVIOUS_OFFSET), ENC_NA);
    }
}


static void
add_diagnostic_message_nack_fields(proto_tree *doip_tree, tvbuff_t *tvb)
{
    doip_prototree_add_with_resolv(doip_tree, hf_source_address, hf_source_address_name, tvb, DOIP_DIAG_COMMON_SOURCE_OFFSET, DOIP_DIAG_COMMON_SOURCE_LEN, ENC_BIG_ENDIAN, NULL);
    doip_prototree_add_with_resolv(doip_tree, hf_target_address, hf_target_address_name, tvb, DOIP_DIAG_COMMON_TARGET_OFFSET, DOIP_DIAG_COMMON_TARGET_LEN, ENC_BIG_ENDIAN, NULL);
    proto_tree_add_item(doip_tree, hf_nack_code, tvb, DOIP_DIAG_MESSAGE_NACK_CODE_OFFSET, DOIP_DIAG_MESSAGE_NACK_CODE_LEN, ENC_NA);

    if (tvb_captured_length_remaining(tvb, DOIP_DIAG_MESSAGE_NACK_PREVIOUS_OFFSET) > 0) {
        proto_tree_add_item(doip_tree, hf_previous, tvb, DOIP_DIAG_MESSAGE_NACK_PREVIOUS_OFFSET, tvb_captured_length_remaining(tvb, DOIP_DIAG_MESSAGE_NACK_PREVIOUS_OFFSET), ENC_NA);
    }
}


/* DoIP protocol dissector */
static void
dissect_doip_message(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
    guint8 version = tvb_get_guint8(tvb, DOIP_VERSION_OFFSET);
    guint16 payload_type = tvb_get_ntohs(tvb, DOIP_TYPE_OFFSET);

    /* Set protocol and clear information columns */
    col_set_str(pinfo->cinfo, COL_PROTOCOL, "DoIP");
    col_clear(pinfo->cinfo, COL_INFO);

    if (
        version == ISO13400_2010 ||
        version == ISO13400_2012 ||
        version == ISO13400_2019 ||
        version == ISO13400_2019_AMD1 ||
        (version == DEFAULT_VALUE && (payload_type >= DOIP_VEHICLE_IDENTIFICATION_REQ && payload_type <= DOIP_VEHICLE_IDENTIFICATION_REQ_VIN))
        ) {
        col_add_fstr(pinfo->cinfo, COL_INFO, "%s", resolve_doip_payload_type(payload_type, true));
    } else {
        col_set_str(pinfo->cinfo, COL_INFO, "Invalid/unsupported DoIP version");
    }


    if (tree) {
        proto_item *ti = NULL;
        proto_tree *doip_tree = NULL;

        ti = proto_tree_add_item(tree, proto_doip, tvb, 0, -1, ENC_NA);
        doip_tree = proto_item_add_subtree(ti, ett_doip);

        add_header(tvb, pinfo, doip_tree);

        switch (payload_type) {
        case DOIP_GENERIC_NACK:
            add_generic_header_nack_fields(doip_tree, tvb);
            break;

        case DOIP_VEHICLE_IDENTIFICATION_REQ:
            break;

        case DOIP_VEHICLE_IDENTIFICATION_REQ_EID:
            add_vehicle_identification_eid_fields(doip_tree, tvb);
            break;

        case DOIP_VEHICLE_IDENTIFICATION_REQ_VIN:
            add_vehicle_identification_vin_fields(doip_tree, tvb);
            break;

        case DOIP_ROUTING_ACTIVATION_REQUEST:
            add_routing_activation_request_fields(doip_tree, tvb, version);
            break;

        case DOIP_ROUTING_ACTIVATION_RESPONSE:
            add_routing_activation_response_fields(doip_tree, tvb);
            break;

        case DOIP_VEHICLE_ANNOUNCEMENT_MESSAGE:
            add_vehicle_announcement_message_fields(doip_tree, tvb);
            break;

        case DOIP_ALIVE_CHECK_REQUEST:
            break;

        case DOIP_ALIVE_CHECK_RESPONSE:
            add_alive_check_response_fields(doip_tree, tvb);
            break;

        case DOIP_ENTITY_STATUS_REQUEST:
            break;

        case DOIP_ENTITY_STATUS_RESPONSE:
            add_entity_status_response_fields(doip_tree, tvb);
            break;

        case DOIP_POWER_INFORMATION_REQUEST:
            break;

        case DOIP_POWER_INFORMATION_RESPONSE:
            add_power_mode_information_response_fields(doip_tree, tvb);
            break;

        case DOIP_DIAGNOSTIC_MESSAGE:
            add_diagnostic_message_fields(doip_tree, tvb, pinfo, tree);
            break;

        case DOIP_DIAGNOSTIC_MESSAGE_ACK:
            add_diagnostic_message_ack_fields(doip_tree, tvb);
            break;

        case DOIP_DIAGNOSTIC_MESSAGE_NACK:
            add_diagnostic_message_nack_fields(doip_tree, tvb);
            break;
        }
    } else if (payload_type == DOIP_DIAGNOSTIC_MESSAGE) {
        /* Show UDS details in info column */
        if (uds_handle != 0) {
            doip_info_t doip_info;
            doip_info.source_address = tvb_get_guint16(tvb, DOIP_DIAG_COMMON_SOURCE_OFFSET, ENC_BIG_ENDIAN);
            doip_info.target_address = tvb_get_guint16(tvb, DOIP_DIAG_COMMON_TARGET_OFFSET, ENC_BIG_ENDIAN);
            call_dissector_with_data(uds_handle, tvb_new_subset_length(tvb, DOIP_DIAG_MESSAGE_DATA_OFFSET, -1), pinfo, NULL, &doip_info);
        }
    }
}


/* determine PDU length of protocol DoIP */
static guint
get_doip_message_len(packet_info *pinfo _U_, tvbuff_t *tvb, int offset, void *p _U_)
{
    guint8 ver1 = tvb_get_guint8(tvb, DOIP_VERSION_OFFSET);
    guint8 ver2 = tvb_get_guint8(tvb, DOIP_INV_VERSION_OFFSET);

    if (ver1 != ((~ver2) & 0xff)) {
        /* if ver2 is not the inverse of ver1, we are not at the start of a DoIP message! */
        /* bounds_error: (0 < return < DOIP_HEADER_LEN) */
        return 1;
    }

    /* PDU Length = length field value + header length */
    guint32 ret = tvb_get_ntohl(tvb, offset + DOIP_LENGTH_OFFSET) + DOIP_HEADER_LEN;

    if (ret < DOIP_HEADER_LEN || ret > 0x7fffffff) {
        /* catch illegal length fields (overflow or too big) */
        return DOIP_HEADER_LEN;
    }

    return ret;
}


static int
dissect_doip_pdu(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
{
    dissect_doip_message(tvb, pinfo, tree);
    return tvb_captured_length(tvb);
}


static int
dissect_doip(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree _U_, void* data)
{
    tcp_dissect_pdus(tvb, pinfo, tree, TRUE, DOIP_HEADER_LEN, get_doip_message_len, dissect_doip_pdu, data);
    return tvb_captured_length(tvb);
}


/* Register DoIP Protocol */
void
proto_register_doip(void)
{
    module_t        *doip_module = NULL;
    expert_module_t *expert_module_doip = NULL;
    uat_t           *doip_diag_addr_uat = NULL;
    uat_t           *doip_payload_type_uat = NULL;

    static hf_register_info hf[] = {
        /* Header */
        { &hf_doip_version,
          { "Version", "doip.version",
            FT_UINT8, BASE_HEX,
            VALS(doip_versions), 0x0,
            NULL, HFILL }
        },
        { &hf_doip_inv_version,
          { "Inverse version", "doip.inverse",
            FT_UINT8, BASE_HEX,
            NULL, 0x0,
            NULL, HFILL }
        },
        { &hf_doip_type,
          { "Type", "doip.type",
            FT_UINT16, BASE_HEX,
            VALS(doip_payloads), 0x0,
            NULL, HFILL }
        },
        { &hf_doip_length,
          { "Length", "doip.length",
            FT_UINT32, BASE_DEC,
            NULL, 0x0,
            NULL, HFILL }
        },
        /* Generic NACK */
        {
            &hf_generic_nack_code,
            {
                "DoIP Header NACK code", "doip.nack_code",
                FT_UINT8, BASE_HEX,
                VALS(nack_codes), 0x00,
                NULL, HFILL
            }
        },
        /* Vehicle announcement message */
        {
            &hf_vin,
            {
                "VIN", "doip.vin",
                FT_STRING, BASE_NONE,
                NULL, 0x00,
                NULL, HFILL
            }
        },
        {
            &hf_logical_address,
            {
                "Logical Address", "doip.logical_address",
                FT_UINT16, BASE_HEX,
                NULL, 0x00,
                NULL, HFILL
            }
        },
        {
            &hf_logical_address_name,
            {
                "Logical Address Name", "doip.logical_address_name",
                FT_STRING, BASE_NONE,
                NULL, 0x00,
                NULL, HFILL
            }
        },
        {
            &hf_eid,
            {
                "EID", "doip.eid",
                FT_BYTES, BASE_NONE,
                NULL, 0x00,
                NULL, HFILL
            }
        },
        {
            &hf_gid,
            {
                "GID", "doip.gid",
                FT_BYTES, BASE_NONE,
                NULL, 0x00,
                NULL, HFILL
            }
        },
        {
            &hf_futher_action,
            {
                "Further action required", "doip.futher_action",
                FT_UINT8, BASE_HEX,
                VALS(action_codes), 0x00,
                NULL, HFILL
            }
        },
        {
            &hf_sync_status,
            {
                "VIN/GID sync. status", "doip.sync_status",
                FT_UINT8, BASE_HEX,
                VALS(sync_status), 0x00,
                NULL, HFILL
            }
        },
        /* Diagnostic power mode information response */
        {
            &hf_power_mode,
            {
                "Diagnostic power mode", "doip.power_mode",
                FT_UINT8, BASE_HEX,
                VALS(power_modes), 0x00,
                NULL, HFILL
            }
        },
        /* Entity status response */
        {
            &hf_node_type,
            {
                "Node type", "doip.node_type",
                FT_UINT8, BASE_HEX,
                VALS(node_types), 0x00,
                NULL, HFILL
            }
        },
        {
            &hf_max_sockets,
            {
                "Max concurrent sockets", "doip.max_sockets",
                FT_UINT8, BASE_DEC,
                NULL, 0x00,
                NULL, HFILL
            }
        },
        {
            &hf_current_sockets,
            {
                "Currently open sockets", "doip.sockets",
                FT_UINT8, BASE_DEC,
                NULL, 0x00,
                NULL, HFILL
            }
        },
        {
            &hf_max_data_size,
            {
                "Max data size", "doip.max_data_size",
                FT_UINT32, BASE_DEC,
                NULL, 0x00,
                NULL, HFILL
            }
        },
        /* Common */
        {
            &hf_source_address,
            {
                "Source Address", "doip.source_address",
                FT_UINT16, BASE_HEX,
                NULL, 0x00,
                NULL, HFILL
            }
        },
        {
            &hf_source_address_name,
            {
                "Source Address Name", "doip.source_address_name",
                FT_STRING, BASE_NONE,
                NULL, 0x00,
                NULL, HFILL
            }
        },
        {
            &hf_target_address,
            {
                "Target Address", "doip.target_address",
                FT_UINT16, BASE_HEX,
                NULL, 0x00,
                NULL, HFILL
            }
        },
        {
            &hf_target_address_name,
            {
                "Target Address Name", "doip.target_address_name",
                FT_STRING, BASE_NONE,
                NULL, 0x00,
                NULL, HFILL
            }
        },
        /* Routing activation request */
        {
            &hf_activation_type_v1,
            {
                "Activation type", "doip.activation_type_v1",
                FT_UINT16, BASE_HEX,
                NULL, 0x00,
                NULL, HFILL
            }
        },
        {
            &hf_activation_type_v2,
            {
                "Activation type", "doip.activation_type",
                FT_UINT8, BASE_HEX,
                VALS(activation_types), 0x00,
                NULL, HFILL
            }
        },
        /* Routing activation response */
        {
            &hf_tester_logical_address,
            {
                "Logical address of external tester", "doip.tester_logical_address",
                FT_UINT16, BASE_HEX,
                NULL, 0x00,
                NULL, HFILL
            }
        },
        {
            &hf_tester_logical_address_name,
            {
                "Name of external tester", "doip.tester_logical_address_name",
                FT_STRING, BASE_NONE,
                NULL, 0x00,
                NULL, HFILL
            }
        },
        {
            &hf_response_code,
            {
                "Routing activation response code", "doip.response_code",
                FT_UINT8, BASE_HEX,
                VALS(activation_codes), 0x00,
                NULL, HFILL
            }
        },
        /* Common */
        {
            &hf_reserved_iso,
            {
                "Reserved by ISO", "doip.reserved_iso",
                FT_UINT32, BASE_HEX,
                NULL, 0x00,
                NULL, HFILL
            }
        },
        {
            &hf_reserved_oem,
            {
                "Reserved by OEM", "doip.reserved_oem",
                FT_UINT32, BASE_HEX,
                NULL, 0x00,
                NULL, HFILL
            }
        },
        /* Diagnostic message */
        {
            &hf_data,
            {
                "User data", "doip.data",
                FT_BYTES, BASE_NONE,
                NULL, 0x00,
                NULL, HFILL
            }
        },
        /* Diagnostic message ACK */
        {
            &hf_ack_code,
            {
                "ACK code", "doip.diag_ack_code",
                FT_UINT8, BASE_HEX,
                VALS(diag_ack_codes), 0x00,
                NULL, HFILL
            }
        },
        /* Diagnostic message NACK */
        {
            &hf_nack_code,
            {
                "NACK code", "doip.diag_nack_code",
                FT_UINT8, BASE_HEX,
                VALS(diag_nack_codes), 0x00,
                NULL, HFILL
            }
        },
        /* Common */
        {
            &hf_previous,
            {
                "Previous message", "doip.previous",
                FT_BYTES, BASE_NONE,
                NULL, 0x00,
                NULL, HFILL
            }
        }
    };

    /* Setup protocol subtree array */
    static gint *ett[] = {
        &ett_doip,
        &ett_header,
        &ett_address
    };

    /* UAT definitions */
    static uat_field_t doip_diag_addr_uat_fields[] = {
        UAT_FLD_HEX(doip_diag_addresses, id, "Diagnostic Address", "Diagnostic Address (hex uint16 without leading 0x)"),
        UAT_FLD_CSTRING(doip_diag_addresses, name, "Name", "Name of the ECU (string)"),
        UAT_END_FIELDS
    };

    static uat_field_t doip_payload_type_uat_fields[] = {
        UAT_FLD_HEX(doip_payload_types, id, "Payload Type", "Payload Type (hex uint16 without leading 0x)"),
        UAT_FLD_CSTRING(doip_payload_types, name, "Name", "Name of the Payload Type (string)"),
        UAT_END_FIELDS
    };

    proto_doip = proto_register_protocol (
                                          "DoIP (ISO13400) Protocol", /* name       */
                                          "DoIP",                     /* short name */
                                          "doip"                      /* abbrev     */
                                          );

    proto_register_field_array(proto_doip, hf, array_length(hf));
    proto_register_subtree_array(ett, array_length(ett));

    doip_handle = register_dissector("doip", dissect_doip, proto_doip);
    doip_module = prefs_register_protocol(proto_doip, NULL);

    /* UATs */
    doip_diag_addr_uat = uat_new("Diagnostic Addresses",
        sizeof(generic_one_id_string_t),        /* record size           */
        DATAFILE_DOIP_DIAG_ADDRESSES,           /* filename              */
        TRUE,                                   /* from profile          */
        (void**)&doip_diag_addresses,           /* data_ptr              */
        &doip_diag_address_count,               /* numitems_ptr          */
        UAT_AFFECTS_DISSECTION,                 /* but not fields        */
        NULL,                                   /* help                  */
        copy_generic_one_id_string_cb,          /* copy callback         */
        update_generic_one_identifier_16bit,    /* update callback       */
        free_generic_one_id_string_cb,          /* free callback         */
        post_update_doip_diag_addresses,        /* post update callback  */
        NULL,                                   /* reset callback        */
        doip_diag_addr_uat_fields               /* UAT field definitions */
    );

    prefs_register_uat_preference(doip_module, "_udf_doip_diag_addresses", "Diagnostics Addresses",
        "A table to define names of Diagnostics Addresses.", doip_diag_addr_uat);

    doip_payload_type_uat = uat_new("Payload Types",
        sizeof(generic_one_id_string_t),        /* record size           */
        DATAFILE_DOIP_PAYLOAD_TYPES,            /* filename              */
        TRUE,                                   /* from profile          */
        (void**)&doip_payload_types,            /* data_ptr              */
        &doip_payload_type_count,               /* numitems_ptr          */
        UAT_AFFECTS_DISSECTION,                 /* but not fields        */
        NULL,                                   /* help                  */
        copy_generic_one_id_string_cb,          /* copy callback         */
        update_generic_one_identifier_16bit,    /* update callback       */
        free_generic_one_id_string_cb,          /* free callback         */
        post_update_doip_payload_types,         /* post update callback  */
        NULL,                                   /* reset callback        */
        doip_payload_type_uat_fields            /* UAT field definitions */
    );

    prefs_register_uat_preference(doip_module, "_udf_doip_payload_types", "Payload Types",
        "A table to define names of Payload Types.", doip_payload_type_uat);

    prefs_register_bool_preference(doip_module, "hide_address_name_entries",
        "Hide Address Name Entries",
        "Should the dissector hide the names for addresses?",
        &doip_hide_address_names);

    static ei_register_info ei[] = {
     { &ef_doip_illegal_length_field, { "doip.illegal_length_field",
       PI_MALFORMED, PI_ERROR, "DoIP illegal length field", EXPFILL } },
    };

    expert_module_doip = expert_register_protocol(proto_doip);
    expert_register_field_array(expert_module_doip, ei, array_length(ei));
}

void
proto_reg_handoff_doip(void)
{
    dissector_add_uint("udp.port", DOIP_PORT, doip_handle);
    dissector_add_uint("tcp.port", DOIP_PORT, doip_handle);

    ssl_dissector_add( DOIP_TLS_PORT, doip_handle);

    uds_handle = find_dissector("uds_over_doip");
}

/*
 * Editor modelines  -  https://www.wireshark.org/tools/modelines.html
 *
 * Local variables:
 * c-basic-offset: 4
 * tab-width: 8
 * indent-tabs-mode: nil
 * End:
 *
 * vi: set shiftwidth=4 tabstop=8 expandtab:
 * :indentSize=4:tabSize=8:noTabs=true:
 */