aboutsummaryrefslogtreecommitdiffstats
path: root/print-juniper.c
blob: a96989528601c9915e05fb20c60b8a9f1bc67f0a (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
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
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
/*     NetBSD: print-juniper.c,v 1.2 2007/07/24 11:53:45 drochner Exp        */

/*
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that: (1) source code
 * distributions retain the above copyright notice and this paragraph
 * in its entirety, and (2) distributions including binary code include
 * the above copyright notice and this paragraph in its entirety in
 * the documentation or other materials provided with the distribution.
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND
 * WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT
 * LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE.
 *
 * Original code by Hannes Gredler (hannes@gredler.at)
 */

/* \summary: DLT_JUNIPER_* printers */

#ifndef lint
#else
__RCSID("NetBSD: print-juniper.c,v 1.3 2007/07/25 06:31:32 dogcow Exp ");
#endif

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <netdissect-stdinc.h>

#include <string.h>

#include "netdissect.h"
#include "addrtoname.h"
#include "extract.h"
#include "ppp.h"
#include "llc.h"
#include "nlpid.h"
#include "ethertype.h"
#include "atm.h"

#define JUNIPER_BPF_OUT           0       /* Outgoing packet */
#define JUNIPER_BPF_IN            1       /* Incoming packet */
#define JUNIPER_BPF_PKT_IN        0x1     /* Incoming packet */
#define JUNIPER_BPF_NO_L2         0x2     /* L2 header stripped */
#define JUNIPER_BPF_IIF           0x4     /* IIF is valid */
#define JUNIPER_BPF_FILTER        0x40    /* BPF filtering is supported */
#define JUNIPER_BPF_EXT           0x80    /* extensions present */
#define JUNIPER_MGC_NUMBER        0x4d4743 /* = "MGC" */

#define JUNIPER_LSQ_COOKIE_RE         (1 << 3)
#define JUNIPER_LSQ_COOKIE_DIR        (1 << 2)
#define JUNIPER_LSQ_L3_PROTO_SHIFT     4
#define JUNIPER_LSQ_L3_PROTO_MASK     (0x17 << JUNIPER_LSQ_L3_PROTO_SHIFT)
#define JUNIPER_LSQ_L3_PROTO_IPV4     (0 << JUNIPER_LSQ_L3_PROTO_SHIFT)
#define JUNIPER_LSQ_L3_PROTO_IPV6     (1 << JUNIPER_LSQ_L3_PROTO_SHIFT)
#define JUNIPER_LSQ_L3_PROTO_MPLS     (2 << JUNIPER_LSQ_L3_PROTO_SHIFT)
#define JUNIPER_LSQ_L3_PROTO_ISO      (3 << JUNIPER_LSQ_L3_PROTO_SHIFT)
#define AS_PIC_COOKIE_LEN 8

#define JUNIPER_IPSEC_O_ESP_ENCRYPT_ESP_AUTHEN_TYPE 1
#define JUNIPER_IPSEC_O_ESP_ENCRYPT_AH_AUTHEN_TYPE 2
#define JUNIPER_IPSEC_O_ESP_AUTHENTICATION_TYPE 3
#define JUNIPER_IPSEC_O_AH_AUTHENTICATION_TYPE 4
#define JUNIPER_IPSEC_O_ESP_ENCRYPTION_TYPE 5

static const struct tok juniper_ipsec_type_values[] = {
    { JUNIPER_IPSEC_O_ESP_ENCRYPT_ESP_AUTHEN_TYPE, "ESP ENCR-AUTH" },
    { JUNIPER_IPSEC_O_ESP_ENCRYPT_AH_AUTHEN_TYPE, "ESP ENCR-AH AUTH" },
    { JUNIPER_IPSEC_O_ESP_AUTHENTICATION_TYPE, "ESP AUTH" },
    { JUNIPER_IPSEC_O_AH_AUTHENTICATION_TYPE, "AH AUTH" },
    { JUNIPER_IPSEC_O_ESP_ENCRYPTION_TYPE, "ESP ENCR" },
    { 0, NULL}
};

static const struct tok juniper_direction_values[] = {
    { JUNIPER_BPF_IN,  "In"},
    { JUNIPER_BPF_OUT, "Out"},
    { 0, NULL}
};

/* codepoints for encoding extensions to a .pcap file */
enum {
    JUNIPER_EXT_TLV_IFD_IDX = 1,
    JUNIPER_EXT_TLV_IFD_NAME = 2,
    JUNIPER_EXT_TLV_IFD_MEDIATYPE = 3,
    JUNIPER_EXT_TLV_IFL_IDX = 4,
    JUNIPER_EXT_TLV_IFL_UNIT = 5,
    JUNIPER_EXT_TLV_IFL_ENCAPS = 6,
    JUNIPER_EXT_TLV_TTP_IFD_MEDIATYPE = 7,
    JUNIPER_EXT_TLV_TTP_IFL_ENCAPS = 8
};

/* 1 byte type and 1-byte length */
#define JUNIPER_EXT_TLV_OVERHEAD 2U

static const struct tok jnx_ext_tlv_values[] = {
    { JUNIPER_EXT_TLV_IFD_IDX, "Device Interface Index" },
    { JUNIPER_EXT_TLV_IFD_NAME,"Device Interface Name" },
    { JUNIPER_EXT_TLV_IFD_MEDIATYPE, "Device Media Type" },
    { JUNIPER_EXT_TLV_IFL_IDX, "Logical Interface Index" },
    { JUNIPER_EXT_TLV_IFL_UNIT,"Logical Unit Number" },
    { JUNIPER_EXT_TLV_IFL_ENCAPS, "Logical Interface Encapsulation" },
    { JUNIPER_EXT_TLV_TTP_IFD_MEDIATYPE, "TTP derived Device Media Type" },
    { JUNIPER_EXT_TLV_TTP_IFL_ENCAPS, "TTP derived Logical Interface Encapsulation" },
    { 0, NULL }
};

static const struct tok jnx_flag_values[] = {
    { JUNIPER_BPF_EXT, "Ext" },
    { JUNIPER_BPF_FILTER, "Filter" },
    { JUNIPER_BPF_IIF, "IIF" },
    { JUNIPER_BPF_NO_L2, "no-L2" },
    { JUNIPER_BPF_PKT_IN, "In" },
    { 0, NULL }
};

#define JUNIPER_IFML_ETHER              1
#define JUNIPER_IFML_FDDI               2
#define JUNIPER_IFML_TOKENRING          3
#define JUNIPER_IFML_PPP                4
#define JUNIPER_IFML_FRAMERELAY         5
#define JUNIPER_IFML_CISCOHDLC          6
#define JUNIPER_IFML_SMDSDXI            7
#define JUNIPER_IFML_ATMPVC             8
#define JUNIPER_IFML_PPP_CCC            9
#define JUNIPER_IFML_FRAMERELAY_CCC     10
#define JUNIPER_IFML_IPIP               11
#define JUNIPER_IFML_GRE                12
#define JUNIPER_IFML_PIM                13
#define JUNIPER_IFML_PIMD               14
#define JUNIPER_IFML_CISCOHDLC_CCC      15
#define JUNIPER_IFML_VLAN_CCC           16
#define JUNIPER_IFML_MLPPP              17
#define JUNIPER_IFML_MLFR               18
#define JUNIPER_IFML_ML                 19
#define JUNIPER_IFML_LSI                20
#define JUNIPER_IFML_DFE                21
#define JUNIPER_IFML_ATM_CELLRELAY_CCC  22
#define JUNIPER_IFML_CRYPTO             23
#define JUNIPER_IFML_GGSN               24
#define JUNIPER_IFML_LSI_PPP            25
#define JUNIPER_IFML_LSI_CISCOHDLC      26
#define JUNIPER_IFML_PPP_TCC            27
#define JUNIPER_IFML_FRAMERELAY_TCC     28
#define JUNIPER_IFML_CISCOHDLC_TCC      29
#define JUNIPER_IFML_ETHERNET_CCC       30
#define JUNIPER_IFML_VT                 31
#define JUNIPER_IFML_EXTENDED_VLAN_CCC  32
#define JUNIPER_IFML_ETHER_OVER_ATM     33
#define JUNIPER_IFML_MONITOR            34
#define JUNIPER_IFML_ETHERNET_TCC       35
#define JUNIPER_IFML_VLAN_TCC           36
#define JUNIPER_IFML_EXTENDED_VLAN_TCC  37
#define JUNIPER_IFML_CONTROLLER         38
#define JUNIPER_IFML_MFR                39
#define JUNIPER_IFML_LS                 40
#define JUNIPER_IFML_ETHERNET_VPLS      41
#define JUNIPER_IFML_ETHERNET_VLAN_VPLS 42
#define JUNIPER_IFML_ETHERNET_EXTENDED_VLAN_VPLS 43
#define JUNIPER_IFML_LT                 44
#define JUNIPER_IFML_SERVICES           45
#define JUNIPER_IFML_ETHER_VPLS_OVER_ATM 46
#define JUNIPER_IFML_FR_PORT_CCC        47
#define JUNIPER_IFML_FRAMERELAY_EXT_CCC 48
#define JUNIPER_IFML_FRAMERELAY_EXT_TCC 49
#define JUNIPER_IFML_FRAMERELAY_FLEX    50
#define JUNIPER_IFML_GGSNI              51
#define JUNIPER_IFML_ETHERNET_FLEX      52
#define JUNIPER_IFML_COLLECTOR          53
#define JUNIPER_IFML_AGGREGATOR         54
#define JUNIPER_IFML_LAPD               55
#define JUNIPER_IFML_PPPOE              56
#define JUNIPER_IFML_PPP_SUBORDINATE    57
#define JUNIPER_IFML_CISCOHDLC_SUBORDINATE  58
#define JUNIPER_IFML_DFC                59
#define JUNIPER_IFML_PICPEER            60

static const struct tok juniper_ifmt_values[] = {
    { JUNIPER_IFML_ETHER, "Ethernet" },
    { JUNIPER_IFML_FDDI, "FDDI" },
    { JUNIPER_IFML_TOKENRING, "Token-Ring" },
    { JUNIPER_IFML_PPP, "PPP" },
    { JUNIPER_IFML_PPP_SUBORDINATE, "PPP-Subordinate" },
    { JUNIPER_IFML_FRAMERELAY, "Frame-Relay" },
    { JUNIPER_IFML_CISCOHDLC, "Cisco-HDLC" },
    { JUNIPER_IFML_SMDSDXI, "SMDS-DXI" },
    { JUNIPER_IFML_ATMPVC, "ATM-PVC" },
    { JUNIPER_IFML_PPP_CCC, "PPP-CCC" },
    { JUNIPER_IFML_FRAMERELAY_CCC, "Frame-Relay-CCC" },
    { JUNIPER_IFML_FRAMERELAY_EXT_CCC, "Extended FR-CCC" },
    { JUNIPER_IFML_IPIP, "IP-over-IP" },
    { JUNIPER_IFML_GRE, "GRE" },
    { JUNIPER_IFML_PIM, "PIM-Encapsulator" },
    { JUNIPER_IFML_PIMD, "PIM-Decapsulator" },
    { JUNIPER_IFML_CISCOHDLC_CCC, "Cisco-HDLC-CCC" },
    { JUNIPER_IFML_VLAN_CCC, "VLAN-CCC" },
    { JUNIPER_IFML_EXTENDED_VLAN_CCC, "Extended-VLAN-CCC" },
    { JUNIPER_IFML_MLPPP, "Multilink-PPP" },
    { JUNIPER_IFML_MLFR, "Multilink-FR" },
    { JUNIPER_IFML_MFR, "Multilink-FR-UNI-NNI" },
    { JUNIPER_IFML_ML, "Multilink" },
    { JUNIPER_IFML_LS, "LinkService" },
    { JUNIPER_IFML_LSI, "LSI" },
    { JUNIPER_IFML_ATM_CELLRELAY_CCC, "ATM-CCC-Cell-Relay" },
    { JUNIPER_IFML_CRYPTO, "IPSEC-over-IP" },
    { JUNIPER_IFML_GGSN, "GGSN" },
    { JUNIPER_IFML_PPP_TCC, "PPP-TCC" },
    { JUNIPER_IFML_FRAMERELAY_TCC, "Frame-Relay-TCC" },
    { JUNIPER_IFML_FRAMERELAY_EXT_TCC, "Extended FR-TCC" },
    { JUNIPER_IFML_CISCOHDLC_TCC, "Cisco-HDLC-TCC" },
    { JUNIPER_IFML_ETHERNET_CCC, "Ethernet-CCC" },
    { JUNIPER_IFML_VT, "VPN-Loopback-tunnel" },
    { JUNIPER_IFML_ETHER_OVER_ATM, "Ethernet-over-ATM" },
    { JUNIPER_IFML_ETHER_VPLS_OVER_ATM, "Ethernet-VPLS-over-ATM" },
    { JUNIPER_IFML_MONITOR, "Monitor" },
    { JUNIPER_IFML_ETHERNET_TCC, "Ethernet-TCC" },
    { JUNIPER_IFML_VLAN_TCC, "VLAN-TCC" },
    { JUNIPER_IFML_EXTENDED_VLAN_TCC, "Extended-VLAN-TCC" },
    { JUNIPER_IFML_CONTROLLER, "Controller" },
    { JUNIPER_IFML_ETHERNET_VPLS, "VPLS" },
    { JUNIPER_IFML_ETHERNET_VLAN_VPLS, "VLAN-VPLS" },
    { JUNIPER_IFML_ETHERNET_EXTENDED_VLAN_VPLS, "Extended-VLAN-VPLS" },
    { JUNIPER_IFML_LT, "Logical-tunnel" },
    { JUNIPER_IFML_SERVICES, "General-Services" },
    { JUNIPER_IFML_PPPOE, "PPPoE" },
    { JUNIPER_IFML_ETHERNET_FLEX, "Flexible-Ethernet-Services" },
    { JUNIPER_IFML_FRAMERELAY_FLEX, "Flexible-FrameRelay" },
    { JUNIPER_IFML_COLLECTOR, "Flow-collection" },
    { JUNIPER_IFML_PICPEER, "PIC Peer" },
    { JUNIPER_IFML_DFC, "Dynamic-Flow-Capture" },
    {0,                    NULL}
};

#define JUNIPER_IFLE_ATM_SNAP           2
#define JUNIPER_IFLE_ATM_NLPID          3
#define JUNIPER_IFLE_ATM_VCMUX          4
#define JUNIPER_IFLE_ATM_LLC            5
#define JUNIPER_IFLE_ATM_PPP_VCMUX      6
#define JUNIPER_IFLE_ATM_PPP_LLC        7
#define JUNIPER_IFLE_ATM_PPP_FUNI       8
#define JUNIPER_IFLE_ATM_CCC            9
#define JUNIPER_IFLE_FR_NLPID           10
#define JUNIPER_IFLE_FR_SNAP            11
#define JUNIPER_IFLE_FR_PPP             12
#define JUNIPER_IFLE_FR_CCC             13
#define JUNIPER_IFLE_ENET2              14
#define JUNIPER_IFLE_IEEE8023_SNAP      15
#define JUNIPER_IFLE_IEEE8023_LLC       16
#define JUNIPER_IFLE_PPP                17
#define JUNIPER_IFLE_CISCOHDLC          18
#define JUNIPER_IFLE_PPP_CCC            19
#define JUNIPER_IFLE_IPIP_NULL          20
#define JUNIPER_IFLE_PIM_NULL           21
#define JUNIPER_IFLE_GRE_NULL           22
#define JUNIPER_IFLE_GRE_PPP            23
#define JUNIPER_IFLE_PIMD_DECAPS        24
#define JUNIPER_IFLE_CISCOHDLC_CCC      25
#define JUNIPER_IFLE_ATM_CISCO_NLPID    26
#define JUNIPER_IFLE_VLAN_CCC           27
#define JUNIPER_IFLE_MLPPP              28
#define JUNIPER_IFLE_MLFR               29
#define JUNIPER_IFLE_LSI_NULL           30
#define JUNIPER_IFLE_AGGREGATE_UNUSED   31
#define JUNIPER_IFLE_ATM_CELLRELAY_CCC  32
#define JUNIPER_IFLE_CRYPTO             33
#define JUNIPER_IFLE_GGSN               34
#define JUNIPER_IFLE_ATM_TCC            35
#define JUNIPER_IFLE_FR_TCC             36
#define JUNIPER_IFLE_PPP_TCC            37
#define JUNIPER_IFLE_CISCOHDLC_TCC      38
#define JUNIPER_IFLE_ETHERNET_CCC       39
#define JUNIPER_IFLE_VT                 40
#define JUNIPER_IFLE_ATM_EOA_LLC        41
#define JUNIPER_IFLE_EXTENDED_VLAN_CCC          42
#define JUNIPER_IFLE_ATM_SNAP_TCC       43
#define JUNIPER_IFLE_MONITOR            44
#define JUNIPER_IFLE_ETHERNET_TCC       45
#define JUNIPER_IFLE_VLAN_TCC           46
#define JUNIPER_IFLE_EXTENDED_VLAN_TCC  47
#define JUNIPER_IFLE_MFR                48
#define JUNIPER_IFLE_ETHERNET_VPLS      49
#define JUNIPER_IFLE_ETHERNET_VLAN_VPLS 50
#define JUNIPER_IFLE_ETHERNET_EXTENDED_VLAN_VPLS 51
#define JUNIPER_IFLE_SERVICES           52
#define JUNIPER_IFLE_ATM_ETHER_VPLS_ATM_LLC                53
#define JUNIPER_IFLE_FR_PORT_CCC        54
#define JUNIPER_IFLE_ATM_MLPPP_LLC      55
#define JUNIPER_IFLE_ATM_EOA_CCC        56
#define JUNIPER_IFLE_LT_VLAN            57
#define JUNIPER_IFLE_COLLECTOR          58
#define JUNIPER_IFLE_AGGREGATOR         59
#define JUNIPER_IFLE_LAPD               60
#define JUNIPER_IFLE_ATM_PPPOE_LLC          61
#define JUNIPER_IFLE_ETHERNET_PPPOE         62
#define JUNIPER_IFLE_PPPOE                  63
#define JUNIPER_IFLE_PPP_SUBORDINATE        64
#define JUNIPER_IFLE_CISCOHDLC_SUBORDINATE  65
#define JUNIPER_IFLE_DFC                    66
#define JUNIPER_IFLE_PICPEER                67

static const struct tok juniper_ifle_values[] = {
    { JUNIPER_IFLE_AGGREGATOR, "Aggregator" },
    { JUNIPER_IFLE_ATM_CCC, "CCC over ATM" },
    { JUNIPER_IFLE_ATM_CELLRELAY_CCC, "ATM CCC Cell Relay" },
    { JUNIPER_IFLE_ATM_CISCO_NLPID, "CISCO compatible NLPID" },
    { JUNIPER_IFLE_ATM_EOA_CCC, "Ethernet over ATM CCC" },
    { JUNIPER_IFLE_ATM_EOA_LLC, "Ethernet over ATM LLC" },
    { JUNIPER_IFLE_ATM_ETHER_VPLS_ATM_LLC, "Ethernet VPLS over ATM LLC" },
    { JUNIPER_IFLE_ATM_LLC, "ATM LLC" },
    { JUNIPER_IFLE_ATM_MLPPP_LLC, "MLPPP over ATM LLC" },
    { JUNIPER_IFLE_ATM_NLPID, "ATM NLPID" },
    { JUNIPER_IFLE_ATM_PPPOE_LLC, "PPPoE over ATM LLC" },
    { JUNIPER_IFLE_ATM_PPP_FUNI, "PPP over FUNI" },
    { JUNIPER_IFLE_ATM_PPP_LLC, "PPP over ATM LLC" },
    { JUNIPER_IFLE_ATM_PPP_VCMUX, "PPP over ATM VCMUX" },
    { JUNIPER_IFLE_ATM_SNAP, "ATM SNAP" },
    { JUNIPER_IFLE_ATM_SNAP_TCC, "ATM SNAP TCC" },
    { JUNIPER_IFLE_ATM_TCC, "ATM VCMUX TCC" },
    { JUNIPER_IFLE_ATM_VCMUX, "ATM VCMUX" },
    { JUNIPER_IFLE_CISCOHDLC, "C-HDLC" },
    { JUNIPER_IFLE_CISCOHDLC_CCC, "C-HDLC CCC" },
    { JUNIPER_IFLE_CISCOHDLC_SUBORDINATE, "C-HDLC via dialer" },
    { JUNIPER_IFLE_CISCOHDLC_TCC, "C-HDLC TCC" },
    { JUNIPER_IFLE_COLLECTOR, "Collector" },
    { JUNIPER_IFLE_CRYPTO, "Crypto" },
    { JUNIPER_IFLE_ENET2, "Ethernet" },
    { JUNIPER_IFLE_ETHERNET_CCC, "Ethernet CCC" },
    { JUNIPER_IFLE_ETHERNET_EXTENDED_VLAN_VPLS, "Extended VLAN VPLS" },
    { JUNIPER_IFLE_ETHERNET_PPPOE, "PPPoE over Ethernet" },
    { JUNIPER_IFLE_ETHERNET_TCC, "Ethernet TCC" },
    { JUNIPER_IFLE_ETHERNET_VLAN_VPLS, "VLAN VPLS" },
    { JUNIPER_IFLE_ETHERNET_VPLS, "VPLS" },
    { JUNIPER_IFLE_EXTENDED_VLAN_CCC, "Extended VLAN CCC" },
    { JUNIPER_IFLE_EXTENDED_VLAN_TCC, "Extended VLAN TCC" },
    { JUNIPER_IFLE_FR_CCC, "FR CCC" },
    { JUNIPER_IFLE_FR_NLPID, "FR NLPID" },
    { JUNIPER_IFLE_FR_PORT_CCC, "FR CCC" },
    { JUNIPER_IFLE_FR_PPP, "FR PPP" },
    { JUNIPER_IFLE_FR_SNAP, "FR SNAP" },
    { JUNIPER_IFLE_FR_TCC, "FR TCC" },
    { JUNIPER_IFLE_GGSN, "GGSN" },
    { JUNIPER_IFLE_GRE_NULL, "GRE NULL" },
    { JUNIPER_IFLE_GRE_PPP, "PPP over GRE" },
    { JUNIPER_IFLE_IPIP_NULL, "IPIP" },
    { JUNIPER_IFLE_LAPD, "LAPD" },
    { JUNIPER_IFLE_LSI_NULL, "LSI Null" },
    { JUNIPER_IFLE_LT_VLAN, "LT VLAN" },
    { JUNIPER_IFLE_MFR, "MFR" },
    { JUNIPER_IFLE_MLFR, "MLFR" },
    { JUNIPER_IFLE_MLPPP, "MLPPP" },
    { JUNIPER_IFLE_MONITOR, "Monitor" },
    { JUNIPER_IFLE_PIMD_DECAPS, "PIMd" },
    { JUNIPER_IFLE_PIM_NULL, "PIM Null" },
    { JUNIPER_IFLE_PPP, "PPP" },
    { JUNIPER_IFLE_PPPOE, "PPPoE" },
    { JUNIPER_IFLE_PPP_CCC, "PPP CCC" },
    { JUNIPER_IFLE_PPP_SUBORDINATE, "" },
    { JUNIPER_IFLE_PPP_TCC, "PPP TCC" },
    { JUNIPER_IFLE_SERVICES, "General Services" },
    { JUNIPER_IFLE_VLAN_CCC, "VLAN CCC" },
    { JUNIPER_IFLE_VLAN_TCC, "VLAN TCC" },
    { JUNIPER_IFLE_VT, "VT" },
    {0,                    NULL}
};

struct juniper_cookie_table_t {
    uint32_t pictype;		/* pic type */
    uint8_t  cookie_len;       /* cookie len */
    const char *s;		/* pic name */
};

static const struct juniper_cookie_table_t juniper_cookie_table[] = {
#ifdef DLT_JUNIPER_ATM1
    { DLT_JUNIPER_ATM1,  4, "ATM1"},
#endif
#ifdef DLT_JUNIPER_ATM2
    { DLT_JUNIPER_ATM2,  8, "ATM2"},
#endif
#ifdef DLT_JUNIPER_MLPPP
    { DLT_JUNIPER_MLPPP, 2, "MLPPP"},
#endif
#ifdef DLT_JUNIPER_MLFR
    { DLT_JUNIPER_MLFR,  2, "MLFR"},
#endif
#ifdef DLT_JUNIPER_MFR
    { DLT_JUNIPER_MFR,   4, "MFR"},
#endif
#ifdef DLT_JUNIPER_PPPOE
    { DLT_JUNIPER_PPPOE, 0, "PPPoE"},
#endif
#ifdef DLT_JUNIPER_PPPOE_ATM
    { DLT_JUNIPER_PPPOE_ATM, 0, "PPPoE ATM"},
#endif
#ifdef DLT_JUNIPER_GGSN
    { DLT_JUNIPER_GGSN, 8, "GGSN"},
#endif
#ifdef DLT_JUNIPER_MONITOR
    { DLT_JUNIPER_MONITOR, 8, "MONITOR"},
#endif
#ifdef DLT_JUNIPER_SERVICES
    { DLT_JUNIPER_SERVICES, 8, "AS"},
#endif
#ifdef DLT_JUNIPER_ES
    { DLT_JUNIPER_ES, 0, "ES"},
#endif
    { 0, 0, NULL }
};

struct juniper_l2info_t {
    uint32_t length;
    uint32_t caplen;
    uint32_t pictype;
    uint8_t direction;
    uint8_t header_len;
    uint8_t cookie_len;
    uint8_t cookie_type;
    uint8_t cookie[8];
    uint8_t bundle;
    uint16_t proto;
    uint8_t flags;
};

#define LS_COOKIE_ID            0x54
#define AS_COOKIE_ID            0x47
#define LS_MLFR_COOKIE_LEN	4
#define ML_MLFR_COOKIE_LEN	2
#define LS_MFR_COOKIE_LEN	6
#define ATM1_COOKIE_LEN         4
#define ATM2_COOKIE_LEN         8

#define ATM2_PKT_TYPE_MASK  0x70
#define ATM2_GAP_COUNT_MASK 0x3F

#define JUNIPER_PROTO_NULL          1
#define JUNIPER_PROTO_IPV4          2
#define JUNIPER_PROTO_IPV6          6

#define MFR_BE_MASK 0xc0

static const struct tok juniper_protocol_values[] = {
    { JUNIPER_PROTO_NULL, "Null" },
    { JUNIPER_PROTO_IPV4, "IPv4" },
    { JUNIPER_PROTO_IPV6, "IPv6" },
    { 0, NULL}
};

static int ip_heuristic_guess(netdissect_options *, register const u_char *, u_int);
static int juniper_ppp_heuristic_guess(netdissect_options *, register const u_char *, u_int);
static int juniper_parse_header(netdissect_options *, const u_char *, const struct pcap_pkthdr *, struct juniper_l2info_t *);

#ifdef DLT_JUNIPER_GGSN
u_int
juniper_ggsn_print(netdissect_options *ndo,
                   const struct pcap_pkthdr *h, register const u_char *p)
{
        struct juniper_l2info_t l2info;
        struct juniper_ggsn_header {
            uint8_t svc_id;
            uint8_t flags_len;
            uint8_t proto;
            uint8_t flags;
            uint8_t vlan_id[2];
            uint8_t res[2];
        };
        const struct juniper_ggsn_header *gh;

        l2info.pictype = DLT_JUNIPER_GGSN;
        if (juniper_parse_header(ndo, p, h, &l2info) == 0)
            return l2info.header_len;

        p+=l2info.header_len;
        gh = (struct juniper_ggsn_header *)&l2info.cookie;

        ND_TCHECK(*gh);
        if (ndo->ndo_eflag) {
            ND_PRINT((ndo, "proto %s (%u), vlan %u: ",
                   tok2str(juniper_protocol_values,"Unknown",gh->proto),
                   gh->proto,
                   EXTRACT_16BITS(&gh->vlan_id[0])));
        }

        switch (gh->proto) {
        case JUNIPER_PROTO_IPV4:
            ip_print(ndo, p, l2info.length);
            break;
        case JUNIPER_PROTO_IPV6:
            ip6_print(ndo, p, l2info.length);
            break;
        default:
            if (!ndo->ndo_eflag)
                ND_PRINT((ndo, "unknown GGSN proto (%u)", gh->proto));
        }

        return l2info.header_len;

trunc:
	ND_PRINT((ndo, "[|juniper_services]"));
	return l2info.header_len;
}
#endif

#ifdef DLT_JUNIPER_ES
u_int
juniper_es_print(netdissect_options *ndo,
                 const struct pcap_pkthdr *h, register const u_char *p)
{
        struct juniper_l2info_t l2info;
        struct juniper_ipsec_header {
            uint8_t sa_index[2];
            uint8_t ttl;
            uint8_t type;
            uint8_t spi[4];
            uint8_t src_ip[4];
            uint8_t dst_ip[4];
        };
        u_int rewrite_len,es_type_bundle;
        const struct juniper_ipsec_header *ih;

        l2info.pictype = DLT_JUNIPER_ES;
        if (juniper_parse_header(ndo, p, h, &l2info) == 0)
            return l2info.header_len;

        p+=l2info.header_len;
        ih = (const struct juniper_ipsec_header *)p;

        ND_TCHECK(*ih);
        switch (ih->type) {
        case JUNIPER_IPSEC_O_ESP_ENCRYPT_ESP_AUTHEN_TYPE:
        case JUNIPER_IPSEC_O_ESP_ENCRYPT_AH_AUTHEN_TYPE:
            rewrite_len = 0;
            es_type_bundle = 1;
            break;
        case JUNIPER_IPSEC_O_ESP_AUTHENTICATION_TYPE:
        case JUNIPER_IPSEC_O_AH_AUTHENTICATION_TYPE:
        case JUNIPER_IPSEC_O_ESP_ENCRYPTION_TYPE:
            rewrite_len = 16;
            es_type_bundle = 0;
            break;
        default:
            ND_PRINT((ndo, "ES Invalid type %u, length %u",
                   ih->type,
                   l2info.length));
            return l2info.header_len;
        }

        l2info.length-=rewrite_len;
        p+=rewrite_len;

        if (ndo->ndo_eflag) {
            if (!es_type_bundle) {
                ND_PRINT((ndo, "ES SA, index %u, ttl %u type %s (%u), spi %u, Tunnel %s > %s, length %u\n",
                       EXTRACT_16BITS(&ih->sa_index),
                       ih->ttl,
                       tok2str(juniper_ipsec_type_values,"Unknown",ih->type),
                       ih->type,
                       EXTRACT_32BITS(&ih->spi),
                       ipaddr_string(ndo, &ih->src_ip),
                       ipaddr_string(ndo, &ih->dst_ip),
                       l2info.length));
            } else {
                ND_PRINT((ndo, "ES SA, index %u, ttl %u type %s (%u), length %u\n",
                       EXTRACT_16BITS(&ih->sa_index),
                       ih->ttl,
                       tok2str(juniper_ipsec_type_values,"Unknown",ih->type),
                       ih->type,
                       l2info.length));
            }
        }

        ip_print(ndo, p, l2info.length);
        return l2info.header_len;

trunc:
	ND_PRINT((ndo, "[|juniper_services]"));
	return l2info.header_len;
}
#endif

#ifdef DLT_JUNIPER_MONITOR
u_int
juniper_monitor_print(netdissect_options *ndo,
                      const struct pcap_pkthdr *h, register const u_char *p)
{
        struct juniper_l2info_t l2info;
        struct juniper_monitor_header {
            uint8_t pkt_type;
            uint8_t padding;
            uint8_t iif[2];
            uint8_t service_id[4];
        };
        const struct juniper_monitor_header *mh;

        l2info.pictype = DLT_JUNIPER_MONITOR;
        if (juniper_parse_header(ndo, p, h, &l2info) == 0)
            return l2info.header_len;

        p+=l2info.header_len;
        mh = (const struct juniper_monitor_header *)p;

        ND_TCHECK(*mh);
        if (ndo->ndo_eflag)
            ND_PRINT((ndo, "service-id %u, iif %u, pkt-type %u: ",
                   EXTRACT_32BITS(&mh->service_id),
                   EXTRACT_16BITS(&mh->iif),
                   mh->pkt_type));

        /* no proto field - lets guess by first byte of IP header*/
        ip_heuristic_guess (ndo, p, l2info.length);

        return l2info.header_len;

trunc:
	ND_PRINT((ndo, "[|juniper_services]"));
	return l2info.header_len;
}
#endif

#ifdef DLT_JUNIPER_SERVICES
u_int
juniper_services_print(netdissect_options *ndo,
                       const struct pcap_pkthdr *h, register const u_char *p)
{
        struct juniper_l2info_t l2info;
        struct juniper_services_header {
            uint8_t svc_id;
            uint8_t flags_len;
            uint8_t svc_set_id[2];
            uint8_t dir_iif[4];
        };
        const struct juniper_services_header *sh;

        l2info.pictype = DLT_JUNIPER_SERVICES;
        if (juniper_parse_header(ndo, p, h, &l2info) == 0)
            return l2info.header_len;

        p+=l2info.header_len;
        sh = (const struct juniper_services_header *)p;

        ND_TCHECK(*sh);
        if (ndo->ndo_eflag)
            ND_PRINT((ndo, "service-id %u flags 0x%02x service-set-id 0x%04x iif %u: ",
                   sh->svc_id,
                   sh->flags_len,
                   EXTRACT_16BITS(&sh->svc_set_id),
                   EXTRACT_24BITS(&sh->dir_iif[1])));

        /* no proto field - lets guess by first byte of IP header*/
        ip_heuristic_guess (ndo, p, l2info.length);

        return l2info.header_len;

trunc:
	ND_PRINT((ndo, "[|juniper_services]"));
	return l2info.header_len;
}
#endif

#ifdef DLT_JUNIPER_PPPOE
u_int
juniper_pppoe_print(netdissect_options *ndo,
                    const struct pcap_pkthdr *h, register const u_char *p)
{
        struct juniper_l2info_t l2info;

        l2info.pictype = DLT_JUNIPER_PPPOE;
        if (juniper_parse_header(ndo, p, h, &l2info) == 0)
            return l2info.header_len;

        p+=l2info.header_len;
        /* this DLT contains nothing but raw ethernet frames */
        ether_print(ndo, p, l2info.length, l2info.caplen, NULL, NULL);
        return l2info.header_len;
}
#endif

#ifdef DLT_JUNIPER_ETHER
u_int
juniper_ether_print(netdissect_options *ndo,
                    const struct pcap_pkthdr *h, register const u_char *p)
{
        struct juniper_l2info_t l2info;

        l2info.pictype = DLT_JUNIPER_ETHER;
        if (juniper_parse_header(ndo, p, h, &l2info) == 0)
            return l2info.header_len;

        p+=l2info.header_len;
        /* this DLT contains nothing but raw Ethernet frames */
        ether_print(ndo, p, l2info.length, l2info.caplen, NULL, NULL);
        return l2info.header_len;
}
#endif

#ifdef DLT_JUNIPER_PPP
u_int
juniper_ppp_print(netdissect_options *ndo,
                  const struct pcap_pkthdr *h, register const u_char *p)
{
        struct juniper_l2info_t l2info;

        l2info.pictype = DLT_JUNIPER_PPP;
        if (juniper_parse_header(ndo, p, h, &l2info) == 0)
            return l2info.header_len;

        p+=l2info.header_len;
        /* this DLT contains nothing but raw ppp frames */
        ppp_print(ndo, p, l2info.length);
        return l2info.header_len;
}
#endif

#ifdef DLT_JUNIPER_FRELAY
u_int
juniper_frelay_print(netdissect_options *ndo,
                     const struct pcap_pkthdr *h, register const u_char *p)
{
        struct juniper_l2info_t l2info;

        l2info.pictype = DLT_JUNIPER_FRELAY;
        if (juniper_parse_header(ndo, p, h, &l2info) == 0)
            return l2info.header_len;

        p+=l2info.header_len;
        /* this DLT contains nothing but raw frame-relay frames */
        fr_print(ndo, p, l2info.length);
        return l2info.header_len;
}
#endif

#ifdef DLT_JUNIPER_CHDLC
u_int
juniper_chdlc_print(netdissect_options *ndo,
                    const struct pcap_pkthdr *h, register const u_char *p)
{
        struct juniper_l2info_t l2info;

        l2info.pictype = DLT_JUNIPER_CHDLC;
        if (juniper_parse_header(ndo, p, h, &l2info) == 0)
            return l2info.header_len;

        p+=l2info.header_len;
        /* this DLT contains nothing but raw c-hdlc frames */
        chdlc_print(ndo, p, l2info.length);
        return l2info.header_len;
}
#endif

#ifdef DLT_JUNIPER_PPPOE_ATM
u_int
juniper_pppoe_atm_print(netdissect_options *ndo,
                        const struct pcap_pkthdr *h, register const u_char *p)
{
        struct juniper_l2info_t l2info;
	uint16_t extracted_ethertype;

        l2info.pictype = DLT_JUNIPER_PPPOE_ATM;
        if (juniper_parse_header(ndo, p, h, &l2info) == 0)
            return l2info.header_len;

        p+=l2info.header_len;

        ND_TCHECK2(p[0], 2);
        extracted_ethertype = EXTRACT_16BITS(p);
        /* this DLT contains nothing but raw PPPoE frames,
         * prepended with a type field*/
        if (ethertype_print(ndo, extracted_ethertype,
                              p+ETHERTYPE_LEN,
                              l2info.length-ETHERTYPE_LEN,
                              l2info.caplen-ETHERTYPE_LEN,
                              NULL, NULL) == 0)
            /* ether_type not known, probably it wasn't one */
            ND_PRINT((ndo, "unknown ethertype 0x%04x", extracted_ethertype));

        return l2info.header_len;

trunc:
	ND_PRINT((ndo, "[|juniper_pppoe_atm]"));
	return l2info.header_len;
}
#endif

#ifdef DLT_JUNIPER_MLPPP
u_int
juniper_mlppp_print(netdissect_options *ndo,
                    const struct pcap_pkthdr *h, register const u_char *p)
{
        struct juniper_l2info_t l2info;

        l2info.pictype = DLT_JUNIPER_MLPPP;
        if (juniper_parse_header(ndo, p, h, &l2info) == 0)
            return l2info.header_len;

        /* suppress Bundle-ID if frame was captured on a child-link
         * best indicator if the cookie looks like a proto */
        if (ndo->ndo_eflag &&
            EXTRACT_16BITS(&l2info.cookie) != PPP_OSI &&
            EXTRACT_16BITS(&l2info.cookie) !=  (PPP_ADDRESS << 8 | PPP_CONTROL))
            ND_PRINT((ndo, "Bundle-ID %u: ", l2info.bundle));

        p+=l2info.header_len;

        /* first try the LSQ protos */
        switch(l2info.proto) {
        case JUNIPER_LSQ_L3_PROTO_IPV4:
            /* IP traffic going to the RE would not have a cookie
             * -> this must be incoming IS-IS over PPP
             */
            if (l2info.cookie[4] == (JUNIPER_LSQ_COOKIE_RE|JUNIPER_LSQ_COOKIE_DIR))
                ppp_print(ndo, p, l2info.length);
            else
                ip_print(ndo, p, l2info.length);
            return l2info.header_len;
        case JUNIPER_LSQ_L3_PROTO_IPV6:
            ip6_print(ndo, p,l2info.length);
            return l2info.header_len;
        case JUNIPER_LSQ_L3_PROTO_MPLS:
            mpls_print(ndo, p, l2info.length);
            return l2info.header_len;
        case JUNIPER_LSQ_L3_PROTO_ISO:
            isoclns_print(ndo, p, l2info.length);
            return l2info.header_len;
        default:
            break;
        }

        /* zero length cookie ? */
        switch (EXTRACT_16BITS(&l2info.cookie)) {
        case PPP_OSI:
            ppp_print(ndo, p - 2, l2info.length + 2);
            break;
        case (PPP_ADDRESS << 8 | PPP_CONTROL): /* fall through */
        default:
            ppp_print(ndo, p, l2info.length);
            break;
        }

        return l2info.header_len;
}
#endif


#ifdef DLT_JUNIPER_MFR
u_int
juniper_mfr_print(netdissect_options *ndo,
                  const struct pcap_pkthdr *h, register const u_char *p)
{
        struct juniper_l2info_t l2info;

        memset(&l2info, 0, sizeof(l2info));
        l2info.pictype = DLT_JUNIPER_MFR;
        if (juniper_parse_header(ndo, p, h, &l2info) == 0)
            return l2info.header_len;

        p+=l2info.header_len;

        /* child-link ? */
        if (l2info.cookie_len == 0) {
            mfr_print(ndo, p, l2info.length);
            return l2info.header_len;
        }

        /* first try the LSQ protos */
        if (l2info.cookie_len == AS_PIC_COOKIE_LEN) {
            switch(l2info.proto) {
            case JUNIPER_LSQ_L3_PROTO_IPV4:
                ip_print(ndo, p, l2info.length);
                return l2info.header_len;
            case JUNIPER_LSQ_L3_PROTO_IPV6:
                ip6_print(ndo, p,l2info.length);
                return l2info.header_len;
            case JUNIPER_LSQ_L3_PROTO_MPLS:
                mpls_print(ndo, p, l2info.length);
                return l2info.header_len;
            case JUNIPER_LSQ_L3_PROTO_ISO:
                isoclns_print(ndo, p, l2info.length);
                return l2info.header_len;
            default:
                break;
            }
            return l2info.header_len;
        }

        /* suppress Bundle-ID if frame was captured on a child-link */
        if (ndo->ndo_eflag && EXTRACT_32BITS(l2info.cookie) != 1)
            ND_PRINT((ndo, "Bundle-ID %u, ", l2info.bundle));
        switch (l2info.proto) {
        case (LLCSAP_ISONS<<8 | LLCSAP_ISONS):
            isoclns_print(ndo, p + 1, l2info.length - 1);
            break;
        case (LLC_UI<<8 | NLPID_Q933):
        case (LLC_UI<<8 | NLPID_IP):
        case (LLC_UI<<8 | NLPID_IP6):
            /* pass IP{4,6} to the OSI layer for proper link-layer printing */
            isoclns_print(ndo, p - 1, l2info.length + 1);
            break;
        default:
            ND_PRINT((ndo, "unknown protocol 0x%04x, length %u", l2info.proto, l2info.length));
        }

        return l2info.header_len;
}
#endif

#ifdef DLT_JUNIPER_MLFR
u_int
juniper_mlfr_print(netdissect_options *ndo,
                   const struct pcap_pkthdr *h, register const u_char *p)
{
        struct juniper_l2info_t l2info;

        l2info.pictype = DLT_JUNIPER_MLFR;
        if (juniper_parse_header(ndo, p, h, &l2info) == 0)
            return l2info.header_len;

        p+=l2info.header_len;

        /* suppress Bundle-ID if frame was captured on a child-link */
        if (ndo->ndo_eflag && EXTRACT_32BITS(l2info.cookie) != 1)
            ND_PRINT((ndo, "Bundle-ID %u, ", l2info.bundle));
        switch (l2info.proto) {
        case (LLC_UI):
        case (LLC_UI<<8):
            isoclns_print(ndo, p, l2info.length);
            break;
        case (LLC_UI<<8 | NLPID_Q933):
        case (LLC_UI<<8 | NLPID_IP):
        case (LLC_UI<<8 | NLPID_IP6):
            /* pass IP{4,6} to the OSI layer for proper link-layer printing */
            isoclns_print(ndo, p - 1, l2info.length + 1);
            break;
        default:
            ND_PRINT((ndo, "unknown protocol 0x%04x, length %u", l2info.proto, l2info.length));
        }

        return l2info.header_len;
}
#endif

/*
 *     ATM1 PIC cookie format
 *
 *     +-----+-------------------------+-------------------------------+
 *     |fmtid|     vc index            |  channel  ID                  |
 *     +-----+-------------------------+-------------------------------+
 */

#ifdef DLT_JUNIPER_ATM1
u_int
juniper_atm1_print(netdissect_options *ndo,
                   const struct pcap_pkthdr *h, register const u_char *p)
{
        int llc_hdrlen;

        struct juniper_l2info_t l2info;

        l2info.pictype = DLT_JUNIPER_ATM1;
        if (juniper_parse_header(ndo, p, h, &l2info) == 0)
            return l2info.header_len;

        p+=l2info.header_len;

        if (l2info.cookie[0] == 0x80) { /* OAM cell ? */
            oam_print(ndo, p, l2info.length, ATM_OAM_NOHEC);
            return l2info.header_len;
        }

        ND_TCHECK2(p[0], 3);
        if (EXTRACT_24BITS(p) == 0xfefe03 || /* NLPID encaps ? */
            EXTRACT_24BITS(p) == 0xaaaa03) { /* SNAP encaps ? */

            llc_hdrlen = llc_print(ndo, p, l2info.length, l2info.caplen, NULL, NULL);
            if (llc_hdrlen > 0)
                return l2info.header_len;
        }

        if (p[0] == 0x03) { /* Cisco style NLPID encaps ? */
            isoclns_print(ndo, p + 1, l2info.length - 1);
            /* FIXME check if frame was recognized */
            return l2info.header_len;
        }

        if (ip_heuristic_guess(ndo, p, l2info.length) != 0) /* last try - vcmux encaps ? */
            return l2info.header_len;

	return l2info.header_len;

trunc:
	ND_PRINT((ndo, "[|juniper_atm1]"));
	return l2info.header_len;
}
#endif

/*
 *     ATM2 PIC cookie format
 *
 *     +-------------------------------+---------+---+-----+-----------+
 *     |     channel ID                |  reserv |AAL| CCRQ| gap cnt   |
 *     +-------------------------------+---------+---+-----+-----------+
 */

#ifdef DLT_JUNIPER_ATM2
u_int
juniper_atm2_print(netdissect_options *ndo,
                   const struct pcap_pkthdr *h, register const u_char *p)
{
        int llc_hdrlen;

        struct juniper_l2info_t l2info;

        l2info.pictype = DLT_JUNIPER_ATM2;
        if (juniper_parse_header(ndo, p, h, &l2info) == 0)
            return l2info.header_len;

        p+=l2info.header_len;

        if (l2info.cookie[7] & ATM2_PKT_TYPE_MASK) { /* OAM cell ? */
            oam_print(ndo, p, l2info.length, ATM_OAM_NOHEC);
            return l2info.header_len;
        }

        ND_TCHECK2(p[0], 3);
        if (EXTRACT_24BITS(p) == 0xfefe03 || /* NLPID encaps ? */
            EXTRACT_24BITS(p) == 0xaaaa03) { /* SNAP encaps ? */

            llc_hdrlen = llc_print(ndo, p, l2info.length, l2info.caplen, NULL, NULL);
            if (llc_hdrlen > 0)
                return l2info.header_len;
        }

        if (l2info.direction != JUNIPER_BPF_PKT_IN && /* ether-over-1483 encaps ? */
            (EXTRACT_32BITS(l2info.cookie) & ATM2_GAP_COUNT_MASK)) {
            ether_print(ndo, p, l2info.length, l2info.caplen, NULL, NULL);
            return l2info.header_len;
        }

        if (p[0] == 0x03) { /* Cisco style NLPID encaps ? */
            isoclns_print(ndo, p + 1, l2info.length - 1);
            /* FIXME check if frame was recognized */
            return l2info.header_len;
        }

        if(juniper_ppp_heuristic_guess(ndo, p, l2info.length) != 0) /* PPPoA vcmux encaps ? */
            return l2info.header_len;

        if (ip_heuristic_guess(ndo, p, l2info.length) != 0) /* last try - vcmux encaps ? */
            return l2info.header_len;

	return l2info.header_len;

trunc:
	ND_PRINT((ndo, "[|juniper_atm2]"));
	return l2info.header_len;
}
#endif


/* try to guess, based on all PPP protos that are supported in
 * a juniper router if the payload data is encapsulated using PPP */
static int
juniper_ppp_heuristic_guess(netdissect_options *ndo,
                            register const u_char *p, u_int length)
{
    switch(EXTRACT_16BITS(p)) {
    case PPP_IP :
    case PPP_OSI :
    case PPP_MPLS_UCAST :
    case PPP_MPLS_MCAST :
    case PPP_IPCP :
    case PPP_OSICP :
    case PPP_MPLSCP :
    case PPP_LCP :
    case PPP_PAP :
    case PPP_CHAP :
    case PPP_ML :
    case PPP_IPV6 :
    case PPP_IPV6CP :
        ppp_print(ndo, p, length);
        break;

    default:
        return 0; /* did not find a ppp header */
        break;
    }
    return 1; /* we printed a ppp packet */
}

static int
ip_heuristic_guess(netdissect_options *ndo,
                   register const u_char *p, u_int length)
{
    switch(p[0]) {
    case 0x45:
    case 0x46:
    case 0x47:
    case 0x48:
    case 0x49:
    case 0x4a:
    case 0x4b:
    case 0x4c:
    case 0x4d:
    case 0x4e:
    case 0x4f:
	    ip_print(ndo, p, length);
	    break;
    case 0x60:
    case 0x61:
    case 0x62:
    case 0x63:
    case 0x64:
    case 0x65:
    case 0x66:
    case 0x67:
    case 0x68:
    case 0x69:
    case 0x6a:
    case 0x6b:
    case 0x6c:
    case 0x6d:
    case 0x6e:
    case 0x6f:
        ip6_print(ndo, p, length);
        break;
    default:
        return 0; /* did not find a ip header */
        break;
    }
    return 1; /* we printed an v4/v6 packet */
}

static int
juniper_read_tlv_value(const u_char *p, u_int tlv_type, u_int tlv_len)
{
   int tlv_value;

   /* TLVs < 128 are little endian encoded */
   if (tlv_type < 128) {
       switch (tlv_len) {
       case 1:
           tlv_value = *p;
           break;
       case 2:
           tlv_value = EXTRACT_LE_16BITS(p);
           break;
       case 3:
           tlv_value = EXTRACT_LE_24BITS(p);
           break;
       case 4:
           tlv_value = EXTRACT_LE_32BITS(p);
           break;
       default:
           tlv_value = -1;
           break;
       }
   } else {
       /* TLVs >= 128 are big endian encoded */
       switch (tlv_len) {
       case 1:
           tlv_value = *p;
           break;
       case 2:
           tlv_value = EXTRACT_16BITS(p);
           break;
       case 3:
           tlv_value = EXTRACT_24BITS(p);
           break;
       case 4:
           tlv_value = EXTRACT_32BITS(p);
           break;
       default:
           tlv_value = -1;
           break;
       }
   }
   return tlv_value;
}

static int
juniper_parse_header(netdissect_options *ndo,
                     const u_char *p, const struct pcap_pkthdr *h, struct juniper_l2info_t *l2info)
{
    const struct juniper_cookie_table_t *lp = juniper_cookie_table;
    u_int idx, jnx_ext_len, jnx_header_len = 0;
    uint8_t tlv_type,tlv_len;
    uint32_t control_word;
    int tlv_value;
    const u_char *tptr;


    l2info->header_len = 0;
    l2info->cookie_len = 0;
    l2info->proto = 0;


    l2info->length = h->len;
    l2info->caplen = h->caplen;
    ND_TCHECK2(p[0], 4);
    l2info->flags = p[3];
    l2info->direction = p[3]&JUNIPER_BPF_PKT_IN;

    if (EXTRACT_24BITS(p) != JUNIPER_MGC_NUMBER) { /* magic number found ? */
        ND_PRINT((ndo, "no magic-number found!"));
        return 0;
    }

    if (ndo->ndo_eflag) /* print direction */
        ND_PRINT((ndo, "%3s ", tok2str(juniper_direction_values, "---", l2info->direction)));

    /* magic number + flags */
    jnx_header_len = 4;

    if (ndo->ndo_vflag > 1)
        ND_PRINT((ndo, "\n\tJuniper PCAP Flags [%s]",
               bittok2str(jnx_flag_values, "none", l2info->flags)));

    /* extensions present ?  - calculate how much bytes to skip */
    if ((l2info->flags & JUNIPER_BPF_EXT ) == JUNIPER_BPF_EXT ) {

        tptr = p+jnx_header_len;

        /* ok to read extension length ? */
        ND_TCHECK2(tptr[0], 2);
        jnx_ext_len = EXTRACT_16BITS(tptr);
        jnx_header_len += 2;
        tptr +=2;

        /* nail up the total length -
         * just in case something goes wrong
         * with TLV parsing */
        jnx_header_len += jnx_ext_len;

        if (ndo->ndo_vflag > 1)
            ND_PRINT((ndo, ", PCAP Extension(s) total length %u", jnx_ext_len));

        ND_TCHECK2(tptr[0], jnx_ext_len);
        while (jnx_ext_len > JUNIPER_EXT_TLV_OVERHEAD) {
            tlv_type = *(tptr++);
            tlv_len = *(tptr++);
            tlv_value = 0;

            /* sanity checks */
            if (tlv_type == 0 || tlv_len == 0)
                break;
            if (tlv_len+JUNIPER_EXT_TLV_OVERHEAD > jnx_ext_len)
                goto trunc;

            if (ndo->ndo_vflag > 1)
                ND_PRINT((ndo, "\n\t  %s Extension TLV #%u, length %u, value ",
                       tok2str(jnx_ext_tlv_values,"Unknown",tlv_type),
                       tlv_type,
                       tlv_len));

            tlv_value = juniper_read_tlv_value(tptr, tlv_type, tlv_len);
            switch (tlv_type) {
            case JUNIPER_EXT_TLV_IFD_NAME:
                /* FIXME */
                break;
            case JUNIPER_EXT_TLV_IFD_MEDIATYPE:
            case JUNIPER_EXT_TLV_TTP_IFD_MEDIATYPE:
                if (tlv_value != -1) {
                    if (ndo->ndo_vflag > 1)
                        ND_PRINT((ndo, "%s (%u)",
                               tok2str(juniper_ifmt_values, "Unknown", tlv_value),
                               tlv_value));
                }
                break;
            case JUNIPER_EXT_TLV_IFL_ENCAPS:
            case JUNIPER_EXT_TLV_TTP_IFL_ENCAPS:
                if (tlv_value != -1) {
                    if (ndo->ndo_vflag > 1)
                        ND_PRINT((ndo, "%s (%u)",
                               tok2str(juniper_ifle_values, "Unknown", tlv_value),
                               tlv_value));
                }
                break;
            case JUNIPER_EXT_TLV_IFL_IDX: /* fall through */
            case JUNIPER_EXT_TLV_IFL_UNIT:
            case JUNIPER_EXT_TLV_IFD_IDX:
            default:
                if (tlv_value != -1) {
                    if (ndo->ndo_vflag > 1)
                        ND_PRINT((ndo, "%u", tlv_value));
                }
                break;
            }

            tptr+=tlv_len;
            jnx_ext_len -= tlv_len+JUNIPER_EXT_TLV_OVERHEAD;
        }

        if (ndo->ndo_vflag > 1)
            ND_PRINT((ndo, "\n\t-----original packet-----\n\t"));
    }

    if ((l2info->flags & JUNIPER_BPF_NO_L2 ) == JUNIPER_BPF_NO_L2 ) {
        if (ndo->ndo_eflag)
            ND_PRINT((ndo, "no-L2-hdr, "));

        /* there is no link-layer present -
         * perform the v4/v6 heuristics
         * to figure out what it is
         */
        ND_TCHECK2(p[jnx_header_len + 4], 1);
        if (ip_heuristic_guess(ndo, p + jnx_header_len + 4,
                               l2info->length - (jnx_header_len + 4)) == 0)
            ND_PRINT((ndo, "no IP-hdr found!"));

        l2info->header_len=jnx_header_len+4;
        return 0; /* stop parsing the output further */

    }
    l2info->header_len = jnx_header_len;
    p+=l2info->header_len;
    l2info->length -= l2info->header_len;
    l2info->caplen -= l2info->header_len;

    /* search through the cookie table and copy values matching for our PIC type */
    ND_TCHECK(p[0]);
    while (lp->s != NULL) {
        if (lp->pictype == l2info->pictype) {

            l2info->cookie_len += lp->cookie_len;

            switch (p[0]) {
            case LS_COOKIE_ID:
                l2info->cookie_type = LS_COOKIE_ID;
                l2info->cookie_len += 2;
                break;
            case AS_COOKIE_ID:
                l2info->cookie_type = AS_COOKIE_ID;
                l2info->cookie_len = 8;
                break;

            default:
                l2info->bundle = l2info->cookie[0];
                break;
            }


#ifdef DLT_JUNIPER_MFR
            /* MFR child links don't carry cookies */
            if (l2info->pictype == DLT_JUNIPER_MFR &&
                (p[0] & MFR_BE_MASK) == MFR_BE_MASK) {
                l2info->cookie_len = 0;
            }
#endif

            l2info->header_len += l2info->cookie_len;
            l2info->length -= l2info->cookie_len;
            l2info->caplen -= l2info->cookie_len;

            if (ndo->ndo_eflag)
                ND_PRINT((ndo, "%s-PIC, cookie-len %u",
                       lp->s,
                       l2info->cookie_len));

            if (l2info->cookie_len > 8) {
                ND_PRINT((ndo, " (invalid)"));
                return 0;
            }

            if (l2info->cookie_len > 0) {
                ND_TCHECK2(p[0], l2info->cookie_len);
                if (ndo->ndo_eflag)
                    ND_PRINT((ndo, ", cookie 0x"));
                for (idx = 0; idx < l2info->cookie_len; idx++) {
                    l2info->cookie[idx] = p[idx]; /* copy cookie data */
                    if (ndo->ndo_eflag) ND_PRINT((ndo, "%02x", p[idx]));
                }
            }

            if (ndo->ndo_eflag) ND_PRINT((ndo, ": ")); /* print demarc b/w L2/L3*/


            ND_TCHECK_16BITS(p+l2info->cookie_len);
            l2info->proto = EXTRACT_16BITS(p+l2info->cookie_len);
            break;
        }
        ++lp;
    }
    p+=l2info->cookie_len;

    /* DLT_ specific parsing */
    switch(l2info->pictype) {
#ifdef DLT_JUNIPER_MLPPP
    case DLT_JUNIPER_MLPPP:
        switch (l2info->cookie_type) {
        case LS_COOKIE_ID:
            l2info->bundle = l2info->cookie[1];
            break;
        case AS_COOKIE_ID:
            l2info->bundle = (EXTRACT_16BITS(&l2info->cookie[6])>>3)&0xfff;
            l2info->proto = (l2info->cookie[5])&JUNIPER_LSQ_L3_PROTO_MASK;
            break;
        default:
            l2info->bundle = l2info->cookie[0];
            break;
        }
        break;
#endif
#ifdef DLT_JUNIPER_MLFR
    case DLT_JUNIPER_MLFR:
        switch (l2info->cookie_type) {
        case LS_COOKIE_ID:
            ND_TCHECK2(p[0], 2);
            l2info->bundle = l2info->cookie[1];
            l2info->proto = EXTRACT_16BITS(p);
            l2info->header_len += 2;
            l2info->length -= 2;
            l2info->caplen -= 2;
            break;
        case AS_COOKIE_ID:
            l2info->bundle = (EXTRACT_16BITS(&l2info->cookie[6])>>3)&0xfff;
            l2info->proto = (l2info->cookie[5])&JUNIPER_LSQ_L3_PROTO_MASK;
            break;
        default:
            l2info->bundle = l2info->cookie[0];
            l2info->header_len += 2;
            l2info->length -= 2;
            l2info->caplen -= 2;
            break;
        }
        break;
#endif
#ifdef DLT_JUNIPER_MFR
    case DLT_JUNIPER_MFR:
        switch (l2info->cookie_type) {
        case LS_COOKIE_ID:
            ND_TCHECK2(p[0], 2);
            l2info->bundle = l2info->cookie[1];
            l2info->proto = EXTRACT_16BITS(p);
            l2info->header_len += 2;
            l2info->length -= 2;
            l2info->caplen -= 2;
            break;
        case AS_COOKIE_ID:
            l2info->bundle = (EXTRACT_16BITS(&l2info->cookie[6])>>3)&0xfff;
            l2info->proto = (l2info->cookie[5])&JUNIPER_LSQ_L3_PROTO_MASK;
            break;
        default:
            l2info->bundle = l2info->cookie[0];
            break;
        }
        break;
#endif
#ifdef DLT_JUNIPER_ATM2
    case DLT_JUNIPER_ATM2:
        ND_TCHECK2(p[0], 4);
        /* ATM cell relay control word present ? */
        if (l2info->cookie[7] & ATM2_PKT_TYPE_MASK) {
            control_word = EXTRACT_32BITS(p);
            /* some control word heuristics */
            switch(control_word) {
            case 0: /* zero control word */
            case 0x08000000: /* < JUNOS 7.4 control-word */
            case 0x08380000: /* cntl word plus cell length (56) >= JUNOS 7.4*/
                l2info->header_len += 4;
                break;
            default:
                break;
            }

            if (ndo->ndo_eflag)
                ND_PRINT((ndo, "control-word 0x%08x ", control_word));
        }
        break;
#endif
#ifdef DLT_JUNIPER_GGSN
    case DLT_JUNIPER_GGSN:
        break;
#endif
#ifdef DLT_JUNIPER_ATM1
    case DLT_JUNIPER_ATM1:
        break;
#endif
#ifdef DLT_JUNIPER_PPP
    case DLT_JUNIPER_PPP:
        break;
#endif
#ifdef DLT_JUNIPER_CHDLC
    case DLT_JUNIPER_CHDLC:
        break;
#endif
#ifdef DLT_JUNIPER_ETHER
    case DLT_JUNIPER_ETHER:
        break;
#endif
#ifdef DLT_JUNIPER_FRELAY
    case DLT_JUNIPER_FRELAY:
        break;
#endif

    default:
        ND_PRINT((ndo, "Unknown Juniper DLT_ type %u: ", l2info->pictype));
        break;
    }

    if (ndo->ndo_eflag > 1)
        ND_PRINT((ndo, "hlen %u, proto 0x%04x, ", l2info->header_len, l2info->proto));

    return 1; /* everything went ok so far. continue parsing */
 trunc:
    ND_PRINT((ndo, "[|juniper_hdr], length %u", h->len));
    return 0;
}


/*
 * Local Variables:
 * c-style: whitesmith
 * c-basic-offset: 4
 * End:
 */