summaryrefslogtreecommitdiffstats
path: root/epan/dissectors/packet-smpp.c
blob: 0fd28c4470729844d5315fb2a562f693ebea8523 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
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
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
2434
2435
2436
2437
2438
2439
2440
2441
2442
2443
2444
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
2455
2456
2457
2458
2459
2460
2461
2462
2463
2464
2465
2466
2467
2468
2469
2470
2471
2472
2473
2474
2475
2476
2477
2478
2479
2480
2481
2482
2483
2484
2485
2486
2487
2488
2489
2490
2491
2492
2493
2494
2495
2496
2497
2498
2499
2500
2501
2502
2503
2504
2505
2506
2507
2508
2509
2510
2511
2512
2513
2514
2515
2516
2517
2518
2519
2520
2521
2522
2523
2524
2525
2526
2527
2528
2529
2530
2531
2532
2533
2534
2535
2536
2537
2538
2539
2540
2541
2542
2543
2544
2545
2546
2547
2548
2549
2550
2551
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566
2567
2568
2569
2570
2571
2572
2573
2574
2575
2576
2577
2578
2579
2580
2581
2582
2583
2584
2585
2586
2587
2588
2589
2590
2591
2592
2593
2594
2595
2596
2597
2598
2599
2600
2601
2602
2603
2604
2605
2606
2607
2608
2609
2610
2611
2612
2613
2614
2615
2616
2617
2618
2619
2620
2621
2622
2623
2624
2625
2626
2627
2628
2629
2630
2631
2632
2633
2634
2635
2636
2637
2638
2639
2640
2641
2642
2643
2644
2645
2646
2647
2648
2649
2650
2651
2652
2653
2654
2655
2656
2657
2658
2659
2660
2661
2662
2663
2664
2665
2666
2667
2668
2669
2670
2671
2672
2673
2674
2675
2676
2677
2678
2679
2680
2681
2682
2683
2684
2685
2686
2687
2688
2689
2690
2691
2692
2693
2694
2695
2696
2697
2698
2699
2700
2701
2702
2703
2704
2705
2706
2707
2708
2709
2710
2711
2712
2713
2714
2715
2716
2717
2718
2719
2720
2721
2722
2723
2724
2725
2726
2727
2728
2729
2730
2731
2732
2733
2734
2735
2736
2737
2738
2739
2740
2741
2742
2743
2744
2745
2746
2747
2748
2749
2750
2751
2752
2753
2754
2755
2756
2757
2758
2759
2760
2761
2762
2763
2764
2765
2766
2767
2768
2769
2770
2771
2772
2773
2774
2775
2776
2777
2778
2779
2780
2781
2782
2783
2784
2785
2786
2787
2788
2789
2790
2791
2792
2793
2794
2795
2796
2797
2798
2799
2800
2801
2802
2803
2804
2805
2806
2807
2808
2809
2810
2811
2812
2813
2814
2815
2816
2817
2818
2819
2820
2821
2822
2823
2824
2825
2826
2827
2828
2829
2830
2831
2832
2833
2834
2835
2836
2837
2838
2839
2840
2841
2842
2843
2844
2845
2846
2847
2848
2849
2850
2851
2852
2853
2854
2855
2856
2857
2858
2859
2860
2861
2862
2863
2864
2865
2866
2867
2868
2869
2870
2871
2872
2873
2874
2875
2876
2877
2878
2879
2880
2881
2882
2883
2884
2885
2886
2887
2888
2889
2890
2891
2892
2893
2894
2895
2896
2897
2898
2899
2900
2901
2902
2903
2904
2905
2906
2907
2908
2909
2910
2911
2912
2913
2914
2915
2916
2917
2918
2919
2920
2921
2922
2923
2924
2925
2926
2927
2928
2929
2930
2931
2932
2933
2934
2935
2936
2937
2938
2939
2940
2941
2942
2943
2944
2945
2946
2947
2948
2949
2950
2951
2952
2953
2954
2955
2956
2957
2958
2959
2960
2961
2962
2963
2964
2965
2966
2967
2968
2969
2970
2971
2972
2973
2974
2975
2976
2977
2978
2979
2980
2981
2982
2983
2984
2985
2986
2987
2988
2989
2990
2991
2992
2993
2994
2995
2996
2997
2998
2999
3000
3001
3002
3003
3004
3005
3006
3007
3008
3009
3010
3011
3012
3013
3014
3015
3016
3017
3018
3019
3020
3021
3022
3023
3024
3025
3026
3027
3028
3029
3030
3031
3032
3033
3034
3035
3036
3037
3038
3039
3040
3041
3042
3043
3044
3045
3046
3047
3048
3049
3050
3051
3052
3053
3054
3055
3056
3057
3058
3059
3060
3061
3062
3063
3064
3065
3066
3067
3068
3069
3070
3071
3072
3073
3074
3075
3076
3077
3078
3079
3080
3081
3082
3083
3084
3085
3086
3087
3088
3089
3090
3091
3092
3093
3094
3095
3096
3097
3098
3099
3100
3101
3102
3103
3104
3105
3106
3107
3108
3109
3110
3111
3112
3113
3114
3115
3116
3117
3118
3119
3120
3121
3122
3123
3124
3125
3126
3127
3128
3129
3130
3131
3132
3133
3134
3135
3136
3137
3138
3139
3140
3141
3142
3143
3144
3145
3146
3147
3148
3149
3150
3151
3152
3153
3154
3155
3156
3157
3158
3159
3160
3161
3162
3163
3164
3165
3166
3167
3168
3169
3170
3171
3172
3173
3174
3175
3176
3177
3178
3179
3180
3181
3182
3183
3184
3185
3186
3187
3188
3189
3190
3191
3192
3193
3194
3195
3196
3197
3198
3199
3200
3201
3202
3203
3204
3205
3206
3207
3208
3209
3210
3211
3212
3213
3214
3215
3216
3217
3218
3219
3220
3221
3222
3223
3224
3225
3226
3227
3228
3229
3230
3231
3232
3233
3234
3235
3236
3237
3238
3239
3240
3241
3242
3243
3244
3245
3246
3247
3248
3249
3250
3251
3252
3253
3254
3255
3256
3257
3258
3259
3260
3261
3262
3263
3264
3265
3266
3267
3268
3269
3270
3271
3272
3273
3274
3275
3276
3277
3278
3279
3280
3281
3282
3283
3284
3285
3286
3287
3288
3289
3290
3291
3292
3293
3294
3295
3296
3297
3298
3299
3300
3301
3302
3303
3304
3305
3306
3307
3308
3309
3310
3311
3312
3313
3314
3315
3316
3317
3318
3319
3320
3321
3322
3323
3324
3325
3326
3327
3328
3329
3330
3331
3332
3333
3334
3335
3336
3337
3338
3339
3340
3341
3342
3343
3344
3345
3346
3347
3348
3349
3350
3351
3352
3353
3354
3355
3356
3357
3358
3359
3360
3361
3362
3363
3364
3365
3366
3367
3368
3369
3370
3371
3372
3373
3374
3375
3376
3377
3378
3379
3380
3381
3382
3383
3384
3385
3386
3387
3388
3389
3390
3391
3392
3393
3394
3395
3396
3397
3398
3399
3400
3401
3402
3403
3404
3405
3406
3407
3408
3409
3410
3411
3412
3413
3414
3415
3416
3417
3418
3419
3420
3421
3422
3423
3424
3425
3426
3427
3428
3429
3430
3431
3432
3433
3434
3435
3436
3437
3438
3439
3440
3441
3442
3443
3444
3445
3446
3447
3448
3449
3450
3451
3452
3453
3454
3455
3456
3457
3458
3459
3460
3461
3462
3463
3464
3465
3466
3467
3468
3469
3470
3471
3472
3473
3474
3475
3476
3477
3478
3479
3480
3481
3482
3483
3484
3485
3486
3487
3488
3489
3490
3491
3492
3493
3494
3495
3496
3497
3498
3499
3500
3501
3502
3503
3504
3505
3506
3507
3508
3509
3510
3511
3512
3513
3514
3515
3516
3517
3518
3519
3520
3521
3522
3523
3524
3525
3526
3527
3528
3529
3530
3531
3532
3533
3534
3535
3536
3537
3538
3539
3540
3541
3542
3543
3544
3545
3546
3547
3548
3549
3550
3551
3552
3553
3554
3555
3556
3557
3558
3559
3560
3561
3562
3563
3564
3565
3566
3567
3568
3569
3570
3571
3572
3573
3574
3575
3576
3577
3578
3579
3580
3581
3582
3583
3584
3585
3586
3587
3588
3589
3590
3591
3592
3593
3594
3595
3596
3597
3598
3599
3600
3601
3602
3603
3604
3605
3606
3607
3608
3609
3610
3611
3612
3613
3614
3615
3616
3617
3618
3619
3620
3621
3622
3623
3624
3625
3626
3627
3628
3629
3630
3631
3632
3633
3634
3635
3636
3637
3638
3639
3640
3641
3642
3643
3644
3645
3646
3647
3648
3649
3650
3651
3652
3653
3654
3655
3656
3657
3658
3659
3660
3661
3662
3663
3664
3665
3666
3667
3668
3669
3670
3671
3672
3673
3674
3675
3676
3677
3678
3679
3680
3681
3682
3683
3684
3685
3686
3687
3688
3689
3690
3691
3692
3693
3694
3695
3696
3697
3698
3699
3700
3701
3702
3703
3704
3705
3706
3707
3708
3709
3710
3711
3712
3713
3714
3715
3716
3717
3718
3719
3720
3721
3722
3723
3724
3725
3726
3727
3728
3729
3730
3731
3732
3733
3734
3735
3736
3737
3738
3739
3740
3741
3742
3743
3744
3745
3746
3747
3748
3749
3750
3751
3752
3753
3754
3755
3756
3757
3758
3759
3760
3761
3762
3763
3764
3765
3766
3767
3768
3769
3770
3771
3772
3773
3774
3775
3776
3777
3778
3779
3780
3781
3782
3783
3784
3785
3786
3787
3788
3789
3790
3791
3792
3793
3794
3795
3796
3797
3798
3799
3800
3801
3802
3803
3804
3805
3806
3807
3808
3809
3810
3811
3812
3813
3814
3815
3816
3817
3818
3819
3820
3821
3822
3823
3824
3825
3826
3827
3828
3829
3830
3831
3832
3833
3834
3835
3836
3837
3838
3839
3840
3841
3842
3843
3844
3845
3846
3847
3848
3849
3850
3851
3852
3853
3854
3855
3856
3857
3858
3859
3860
3861
3862
3863
3864
3865
3866
3867
3868
3869
3870
3871
3872
3873
3874
3875
3876
3877
3878
3879
3880
/* packet-smpp.c
 * Routines for Short Message Peer to Peer dissection
 * Copyright 2001, Tom Uijldert.
 *
 * Data Coding Scheme decoding for GSM (SMS and CBS),
 * provided by Olivier Biot.
 *
 * Dissection of multiple SMPP PDUs within one packet
 * provided by Chris Wilson.
 *
 * Statistics support using Stats Tree API
 * provided by Abhik Sarkar
 *
 * Support for SMPP 5.0
 * introduced by Abhik Sarkar
 *
 * Support for Huawei SMPP+ extensions
 * introduced by Xu Bo and enhanced by Abhik Sarkar
 *
 * Enhanced error code handling
 * provided by Stipe Tolj from Kannel.
 *
 * Refer to the AUTHORS file or the AUTHORS section in the man page
 * for contacting the author(s) of this file.
 *
 * Wireshark - Network traffic analyzer
 * By Gerald Combs <gerald@wireshark.org>
 * Copyright 1998 Gerald Combs
 *
 * SPDX-License-Identifier: GPL-2.0-or-later
 *
 * ----------
 *
 * Dissector of an SMPP (Short Message Peer to Peer) PDU, as defined by the
 * SMS forum (www.smsforum.net) in "SMPP protocol specification v3.4"
 * (document version: 12-Oct-1999 Issue 1.2)
 */

#include "config.h"


#include <epan/packet.h>
#include <epan/expert.h>
#include <epan/exceptions.h>
#include <epan/stats_tree.h>
#include <epan/prefs.h>
#include <epan/exported_pdu.h>
#include <epan/conversation.h>
#include <epan/proto_data.h>
#include <wsutil/time_util.h>
#include "packet-tcp.h"
#include "packet-tls.h"
#include "packet-smpp.h"
#include <epan/strutil.h>

#define SMPP_FIXED_HEADER_LENGTH  16
#define SMPP_MIN_LENGTH SMPP_FIXED_HEADER_LENGTH

/* Forward declarations         */
void proto_register_smpp(void);
void proto_reg_handoff_smpp(void);

static gint exported_pdu_tap = -1;

/*
 * Initialize the protocol and registered fields
 *
 * Fixed header section
 */
static int proto_smpp                                 = -1;

static int st_smpp_ops                                = -1;
static int st_smpp_req                                = -1;
static int st_smpp_res                                = -1;
static int st_smpp_res_status                         = -1;

static int hf_smpp_command_id                         = -1;
static int hf_smpp_command_request                    = -1;
static int hf_smpp_command_response                   = -1;
static int hf_smpp_command_length                     = -1;
static int hf_smpp_command_status                     = -1;
static int hf_smpp_sequence_number                    = -1;

/*
 * Fixed body section
 */
static int hf_smpp_system_id                          = -1;
static int hf_smpp_password                           = -1;
static int hf_smpp_system_type                        = -1;
static int hf_smpp_interface_version                  = -1;
static int hf_smpp_addr_ton                           = -1;
static int hf_smpp_addr_npi                           = -1;
static int hf_smpp_address_range                      = -1;
static int hf_smpp_service_type                       = -1;
static int hf_smpp_source_addr_ton                    = -1;
static int hf_smpp_source_addr_npi                    = -1;
static int hf_smpp_source_addr                        = -1;
static int hf_smpp_dest_addr_ton                      = -1;
static int hf_smpp_dest_addr_npi                      = -1;
static int hf_smpp_destination_addr                   = -1;
static int hf_smpp_esm_submit_msg_mode                = -1;
static int hf_smpp_esm_submit_msg_type                = -1;
static int hf_smpp_esm_submit_features                = -1;
static int hf_smpp_protocol_id                        = -1;
static int hf_smpp_priority_flag                      = -1;
static int hf_smpp_schedule_delivery_time             = -1;
static int hf_smpp_schedule_delivery_time_r           = -1;
static int hf_smpp_validity_period                    = -1;
static int hf_smpp_validity_period_r                  = -1;
static int hf_smpp_regdel_receipt                     = -1;
static int hf_smpp_regdel_acks                        = -1;
static int hf_smpp_regdel_notif                       = -1;
static int hf_smpp_replace_if_present_flag            = -1;
static int hf_smpp_data_coding                        = -1;
static int hf_smpp_sm_default_msg_id                  = -1;
static int hf_smpp_sm_length                          = -1;
static int hf_smpp_short_message                      = -1;
static int hf_smpp_short_message_bin                  = -1;
static int hf_smpp_message_id                         = -1;
static int hf_smpp_dlist                              = -1;
static int hf_smpp_dlist_resp                         = -1;
static int hf_smpp_dl_name                            = -1;
static int hf_smpp_final_date                         = -1;
static int hf_smpp_final_date_r                       = -1;
static int hf_smpp_message_state                      = -1;
static int hf_smpp_error_code                         = -1;
static int hf_smpp_error_status_code                  = -1;
static int hf_smpp_esme_addr_ton                      = -1;
static int hf_smpp_esme_addr_npi                      = -1;
static int hf_smpp_esme_addr                          = -1;

/*
 * Optional parameter section
 */
static int hf_smpp_opt_params                         = -1;
static int hf_smpp_opt_param                          = -1;
static int hf_smpp_opt_param_tag                      = -1;
static int hf_smpp_opt_param_len                      = -1;
static int hf_smpp_vendor_op                          = -1;
static int hf_smpp_reserved_op                        = -1;

static int hf_smpp_dest_addr_subunit                  = -1;
static int hf_smpp_dest_network_type                  = -1;
static int hf_smpp_dest_bearer_type                   = -1;
static int hf_smpp_dest_telematics_id                 = -1;
static int hf_smpp_source_addr_subunit                = -1;
static int hf_smpp_source_network_type                = -1;
static int hf_smpp_source_bearer_type                 = -1;
static int hf_smpp_source_telematics_id               = -1;
static int hf_smpp_qos_time_to_live                   = -1;
static int hf_smpp_payload_type                       = -1;
static int hf_smpp_additional_status_info_text        = -1;
static int hf_smpp_receipted_message_id               = -1;
static int hf_smpp_msg_wait_ind                       = -1;
static int hf_smpp_msg_wait_type                      = -1;
static int hf_smpp_privacy_indicator                  = -1;
static int hf_smpp_source_subaddress                  = -1;
static int hf_smpp_dest_subaddress                    = -1;
static int hf_smpp_user_message_reference             = -1;
static int hf_smpp_user_response_code                 = -1;
static int hf_smpp_source_port                        = -1;
static int hf_smpp_destination_port                   = -1;
static int hf_smpp_sar_msg_ref_num                    = -1;
static int hf_smpp_language_indicator                 = -1;
static int hf_smpp_sar_total_segments                 = -1;
static int hf_smpp_sar_segment_seqnum                 = -1;
static int hf_smpp_SC_interface_version               = -1;
static int hf_smpp_callback_num_pres                  = -1;
static int hf_smpp_callback_num_scrn                  = -1;
static int hf_smpp_callback_num_atag                  = -1;
static int hf_smpp_number_of_messages                 = -1;
static int hf_smpp_callback_num                       = -1;
static int hf_smpp_dpf_result                         = -1;
static int hf_smpp_set_dpf                            = -1;
static int hf_smpp_ms_availability_status             = -1;
static int hf_smpp_network_error_type                 = -1;
static int hf_smpp_network_error_code                 = -1;
static int hf_smpp_message_payload                    = -1;
static int hf_smpp_delivery_failure_reason            = -1;
static int hf_smpp_more_messages_to_send              = -1;
static int hf_smpp_ussd_service_op                    = -1;
static int hf_smpp_display_time                       = -1;
static int hf_smpp_sms_signal                         = -1;
static int hf_smpp_ms_validity                        = -1;
static int hf_smpp_alert_on_message_delivery_null     = -1;
static int hf_smpp_alert_on_message_delivery_type     = -1;
static int hf_smpp_its_reply_type                     = -1;
static int hf_smpp_its_session_number                 = -1;
static int hf_smpp_its_session_sequence               = -1;
static int hf_smpp_its_session_ind                    = -1;

/* Optional Parameters introduced in SMPP 5.0   */
static int hf_smpp_congestion_state                   = -1;
static int hf_smpp_billing_identification             = -1;
static int hf_smpp_dest_addr_np_country               = -1;
static int hf_smpp_dest_addr_np_information           = -1;
static int hf_smpp_dest_addr_np_resolution            = -1;
static int hf_smpp_source_network_id                  = -1;
static int hf_smpp_source_node_id                     = -1;
static int hf_smpp_dest_network_id                    = -1;
static int hf_smpp_dest_node_id                       = -1;
/* Optional Parameters for Cell Broadcast Operations */
static int hf_smpp_broadcast_channel_indicator        = -1;
static int hf_smpp_broadcast_content_type_nw          = -1;
static int hf_smpp_broadcast_content_type_type        = -1;
static int hf_smpp_broadcast_content_type_info        = -1;
static int hf_smpp_broadcast_message_class            = -1;
static int hf_smpp_broadcast_rep_num                  = -1;
static int hf_smpp_broadcast_frequency_interval_unit  = -1;
static int hf_smpp_broadcast_frequency_interval_value = -1;
static int hf_smpp_broadcast_area_identifier          = -1;
static int hf_smpp_broadcast_area_identifier_format   = -1;
static int hf_smpp_broadcast_error_status             = -1;
static int hf_smpp_broadcast_area_success             = -1;
static int hf_smpp_broadcast_end_time                 = -1;
static int hf_smpp_broadcast_end_time_r               = -1;
static int hf_smpp_broadcast_service_group            = -1;

/*
 * Data Coding Scheme section
 */
static int hf_smpp_dcs_sms_coding_group               = -1;
static int hf_smpp_dcs_reserved                       = -1;
static int hf_smpp_dcs_charset                        = -1;
static int hf_smpp_dcs_class                          = -1;
static int hf_smpp_dcs_wait_ind                       = -1;
static int hf_smpp_dcs_reserved2                      = -1;
static int hf_smpp_dcs_wait_type                      = -1;

/*
 * Huawei SMPP+ extensions
 */
static int hf_huawei_smpp_smsc_addr                   = -1;
static int hf_huawei_smpp_msc_addr_noa                = -1;
static int hf_huawei_smpp_msc_addr_npi                = -1;
static int hf_huawei_smpp_msc_addr                    = -1;
static int hf_huawei_smpp_mo_mt_flag                  = -1;
static int hf_huawei_smpp_length_auth                 = -1;
static int hf_huawei_smpp_sm_id                       = -1;
static int hf_huawei_smpp_service_id                  = -1;
static int hf_huawei_smpp_operation_result            = -1;
static int hf_huawei_smpp_notify_mode                 = -1;
static int hf_huawei_smpp_delivery_result             = -1;

static expert_field ei_smpp_message_payload_duplicate = EI_INIT;

/* Initialize the subtree pointers */
static gint ett_smpp            = -1;
static gint ett_dlist           = -1;
static gint ett_dlist_resp      = -1;
static gint ett_opt_params      = -1;
static gint ett_opt_param       = -1;
static gint ett_dcs             = -1;

static dissector_handle_t smpp_handle;

/* Reassemble SMPP TCP segments */
static gboolean reassemble_over_tcp = TRUE;
static gboolean smpp_gsm7_unpacked = TRUE;

typedef enum {
  DECODE_AS_DEFAULT    =   0,
  DECODE_AS_ASCII      =   1,
  DECODE_AS_OCTET      =   2, /* 8-bit binary */
  DECODE_AS_ISO_8859_1 =   3,
  DECODE_AS_ISO_8859_5 =   6,
  DECODE_AS_ISO_8859_8 =   7,
  DECODE_AS_UCS2       =   8,
  DECODE_AS_KSC5601    =  14, /* Korean, EUC-KR as in ANSI 637 */
  DECODE_AS_GSM7       = 241, /* One of many GSM DCS values that means GSM7 */
} SMPP_DCS_Type;

/* ENC_NA is the same as ENC_ASCII, so use an artifical value to mean
 * "treat this as 8-bit binary / FT_BYTES, not a string."
 */
#define DO_NOT_DECODE G_MAXUINT

/* Default preference whether to decode the SMS over SMPP when DCS = 0 */
static gint smpp_decode_dcs_0_sms = DO_NOT_DECODE;

/* Tap */
static int smpp_tap             = -1;

#define SMPP_COMMAND_ID_GENERIC_NACK        0x00000000
#define SMPP_COMMAND_ID_BIND_RECEIVER       0x00000001
#define SMPP_COMMAND_ID_BIND_TRANSMITTER    0x00000002
#define SMPP_COMMAND_ID_QUERY_SM            0x00000003
#define SMPP_COMMAND_ID_SUBMIT_SM           0x00000004
#define SMPP_COMMAND_ID_DELIVER_SM          0x00000005
#define SMPP_COMMAND_ID_UNBIND              0x00000006
#define SMPP_COMMAND_ID_REPLACE_SM          0x00000007
#define SMPP_COMMAND_ID_CANCEL_SM           0x00000008
#define SMPP_COMMAND_ID_BIND_TRANSCEIVER    0x00000009
#define SMPP_COMMAND_ID_OUTBIND             0x0000000B
#define SMPP_COMMAND_ID_ENQUIRE_LINK        0x00000015
#define SMPP_COMMAND_ID_SUBMIT_MULTI        0x00000021
#define SMPP_COMMAND_ID_ALERT_NOTIFICATION  0x00000102
#define SMPP_COMMAND_ID_DATA_SM             0x00000103
/* Introduced in SMPP 5.0 */
#define SMPP_COMMAND_ID_BROADCAST_SM        0x00000111
#define SMPP_COMMAND_ID_QUERY_BROADCAST_SM  0x00000112
#define SMPP_COMMAND_ID_CANCEL_BROADCAST_SM 0x00000113
/* Huawei SMPP+ extensions */
#define SMPP_COMMAND_ID_HUAWEI_AUTH_ACC     0x01000001
#define SMPP_COMMAND_ID_HUAWEI_SM_RESULT_NOTIFY 0X01000002


#define SMPP_COMMAND_ID_RESPONSE_MASK       0x80000000

#define SMPP_UDHI_MASK 0x40

/*
 * Value-arrays for field-contents
 */
static const value_string vals_command_id[] = {         /* Operation    */
    { SMPP_COMMAND_ID_BIND_RECEIVER, "Bind_receiver" },
    { SMPP_COMMAND_ID_BIND_TRANSMITTER, "Bind_transmitter" },
    { SMPP_COMMAND_ID_QUERY_SM, "Query_sm" },
    { SMPP_COMMAND_ID_SUBMIT_SM, "Submit_sm" },
    { SMPP_COMMAND_ID_DELIVER_SM, "Deliver_sm" },
    { SMPP_COMMAND_ID_UNBIND, "Unbind" },
    { SMPP_COMMAND_ID_REPLACE_SM, "Replace_sm" },
    { SMPP_COMMAND_ID_CANCEL_SM, "Cancel_sm" },
    { SMPP_COMMAND_ID_BIND_TRANSCEIVER, "Bind_transceiver" },
    { SMPP_COMMAND_ID_OUTBIND, "Outbind" },
    { SMPP_COMMAND_ID_ENQUIRE_LINK, "Enquire_link" },
    { SMPP_COMMAND_ID_SUBMIT_MULTI, "Submit_multi" },
    { SMPP_COMMAND_ID_ALERT_NOTIFICATION, "Alert_notification" },
    { SMPP_COMMAND_ID_DATA_SM, "Data_sm" },
    { SMPP_COMMAND_ID_BROADCAST_SM, "Broadcast_sm" },
    { SMPP_COMMAND_ID_QUERY_BROADCAST_SM, "Query_broadcast_sm" },
    { SMPP_COMMAND_ID_CANCEL_BROADCAST_SM, "Cancel_broadcast_sm" },
    { SMPP_COMMAND_ID_HUAWEI_AUTH_ACC, "Auth_acc" },
    { SMPP_COMMAND_ID_HUAWEI_SM_RESULT_NOTIFY, "Sm_result_notify" },

    { SMPP_COMMAND_ID_RESPONSE_MASK|SMPP_COMMAND_ID_GENERIC_NACK, "Generic_nack" },
    { SMPP_COMMAND_ID_RESPONSE_MASK|SMPP_COMMAND_ID_BIND_RECEIVER, "Bind_receiver - resp" },
    { SMPP_COMMAND_ID_RESPONSE_MASK|SMPP_COMMAND_ID_BIND_TRANSMITTER, "Bind_transmitter - resp" },
    { SMPP_COMMAND_ID_RESPONSE_MASK|SMPP_COMMAND_ID_QUERY_SM, "Query_sm - resp" },
    { SMPP_COMMAND_ID_RESPONSE_MASK|SMPP_COMMAND_ID_SUBMIT_SM, "Submit_sm - resp" },
    { SMPP_COMMAND_ID_RESPONSE_MASK|SMPP_COMMAND_ID_DELIVER_SM, "Deliver_sm - resp" },
    { SMPP_COMMAND_ID_RESPONSE_MASK|SMPP_COMMAND_ID_UNBIND, "Unbind - resp" },
    { SMPP_COMMAND_ID_RESPONSE_MASK|SMPP_COMMAND_ID_REPLACE_SM, "Replace_sm - resp" },
    { SMPP_COMMAND_ID_RESPONSE_MASK|SMPP_COMMAND_ID_CANCEL_SM, "Cancel_sm - resp" },
    { SMPP_COMMAND_ID_RESPONSE_MASK|SMPP_COMMAND_ID_BIND_TRANSCEIVER, "Bind_transceiver - resp" },
    { SMPP_COMMAND_ID_RESPONSE_MASK|SMPP_COMMAND_ID_ENQUIRE_LINK, "Enquire_link - resp" },
    { SMPP_COMMAND_ID_RESPONSE_MASK|SMPP_COMMAND_ID_SUBMIT_MULTI, "Submit_multi - resp" },
    { SMPP_COMMAND_ID_RESPONSE_MASK|SMPP_COMMAND_ID_DATA_SM, "Data_sm - resp" },
    { SMPP_COMMAND_ID_RESPONSE_MASK|SMPP_COMMAND_ID_BROADCAST_SM, "Broadcast_sm - resp" },
    { SMPP_COMMAND_ID_RESPONSE_MASK|SMPP_COMMAND_ID_QUERY_BROADCAST_SM, "Query_broadcast_sm - resp" },
    { SMPP_COMMAND_ID_RESPONSE_MASK|SMPP_COMMAND_ID_CANCEL_BROADCAST_SM, "Cancel_broadcast_sm - resp" },
    { SMPP_COMMAND_ID_RESPONSE_MASK|SMPP_COMMAND_ID_HUAWEI_AUTH_ACC, "Auth_acc - resp" },
    { SMPP_COMMAND_ID_RESPONSE_MASK|SMPP_COMMAND_ID_HUAWEI_SM_RESULT_NOTIFY, "Sm_result_notify - resp" },
    { 0, NULL }
};

static const range_string rvals_command_status[] = {     /* Status       */
    { 0x00000000, 0x00000000, "Ok" },
    { 0x00000001, 0x00000001, "Message length is invalid" },
    { 0x00000002, 0x00000002, "Command length is invalid" },
    { 0x00000003, 0x00000003, "Invalid command ID" },
    { 0x00000004, 0x00000004, "Incorrect BIND status for given command" },
    { 0x00000005, 0x00000005, "ESME already in bound state" },
    { 0x00000006, 0x00000006, "Invalid priority flag" },
    { 0x00000007, 0x00000007, "Invalid registered delivery flag" },
    { 0x00000008, 0x00000008, "System error" },
    { 0x00000009, 0x00000009, "[Reserved]" },
    { 0x0000000A, 0x0000000A, "Invalid source address" },
    { 0x0000000B, 0x0000000B, "Invalid destination address" },
    { 0x0000000C, 0x0000000C, "Message ID is invalid" },
    { 0x0000000D, 0x0000000D, "Bind failed" },
    { 0x0000000E, 0x0000000E, "Invalid password" },
    { 0x0000000F, 0x0000000F, "Invalid system ID" },
    { 0x00000010, 0x00000010, "[Reserved]" },
    { 0x00000011, 0x00000011, "Cancel SM failed" },
    { 0x00000012, 0x00000012, "[Reserved]" },
    { 0x00000013, 0x00000013, "Replace SM failed" },
    { 0x00000014, 0x00000014, "Message queue full" },
    { 0x00000015, 0x00000015, "Invalid service type" },
    { 0x00000016, 0x00000032, "[Reserved]" },
    { 0x00000033, 0x00000033, "Invalid number of destinations" },
    { 0x00000034, 0x00000034, "Invalid distribution list name" },
    { 0x00000035, 0x0000003F, "[Reserved]" },
    { 0x00000040, 0x00000040, "Destination flag is invalid (submit_multi)" },
    { 0x00000041, 0x00000041, "[Reserved]" },
    { 0x00000042, 0x00000042, "Invalid 'submit with replace' request" },
    { 0x00000043, 0x00000043, "Invalid esm_class field data" },
    { 0x00000044, 0x00000044, "Cannot submit to distribution list" },
    { 0x00000045, 0x00000045, "submit_sm or submit_multi failed" },
    { 0x00000046, 0x00000047, "[Reserved]" },
    { 0x00000048, 0x00000048, "Invalid source address TON" },
    { 0x00000049, 0x00000049, "Invalid source address NPI" },
    { 0x00000050, 0x00000050, "Invalid destination address TON" },
    { 0x00000051, 0x00000051, "Invalid destination address NPI" },
    { 0x00000052, 0x00000052, "[Reserved]" },
    { 0x00000053, 0x00000053, "Invalid system_type field" },
    { 0x00000054, 0x00000054, "Invalid replace_if_present flag" },
    { 0x00000055, 0x00000055, "Invalid number of messages" },
    { 0x00000056, 0x00000057, "[Reserved]" },
    { 0x00000058, 0x00000058, "Throttling error (ESME exceeded allowed message limits)" },
    { 0x00000059, 0x00000060, "[Reserved]" },
    { 0x00000061, 0x00000061, "Invalid scheduled delivery time" },
    { 0x00000062, 0x00000062, "Invalid message validity period (expiry time)" },
    { 0x00000063, 0x00000063, "Predefined message invalid or not found" },
    { 0x00000064, 0x00000064, "ESME receiver temporary app error code" },
    { 0x00000065, 0x00000065, "ESME receiver permanent app error code" },
    { 0x00000066, 0x00000066, "ESME receiver reject message error code" },
    { 0x00000067, 0x00000067, "query_sm request failed" },
    { 0x00000068, 0x000000BF, "[Reserved]" },
    { 0x000000C0, 0x000000C0, "Error in the optional part of the PDU body" },
    { 0x000000C1, 0x000000C1, "Optional parameter not allowed" },
    { 0x000000C2, 0x000000C2, "Invalid parameter length" },
    { 0x000000C3, 0x000000C3, "Expected optional parameter missing" },
    { 0x000000C4, 0x000000C4, "Invalid optional parameter  value" },
    { 0x000000C5, 0x000000FD, "[Reserved]" },
    { 0x000000FE, 0x000000FE, "(Transaction) Delivery failure (used for data_sm_resp)" },
    { 0x000000FF, 0x000000FF, "Unknown error" },
    /* Introduced in SMPP 5.0 */
    { 0x00000100, 0x00000100, "ESME Not authorised to use specified service_type." },
    { 0x00000101, 0x00000101, "ESME Prohibited from using specified operation."},
    { 0x00000102, 0x00000102, "Specified service_type is unavailable." },
    { 0x00000103, 0x00000103, "Specified service_type is denied." },
    { 0x00000104, 0x00000104, "Invalid Data Coding Scheme." },
    { 0x00000105, 0x00000105, "Source Address Sub unit is Invalid." },
    { 0x00000106, 0x00000106, "Destination Address Sub unit is Invalid." },
    { 0x00000107, 0x00000107, "Broadcast Frequency Interval is invalid." },
    { 0x00000108, 0x00000108, "Broadcast Alias Name is invalid." },
    { 0x00000109, 0x00000109, "Broadcast Area Format is invalid." },
    { 0x0000010A, 0x0000010A, "Number of Broadcast Areas is invalid." },
    { 0x0000010B, 0x0000010B, "Broadcast Content Type is invalid." },
    { 0x0000010C, 0x0000010C, "Broadcast Message Class is invalid." },
    { 0x0000010D, 0x0000010D, "broadcast_sm operation failed." },
    { 0x0000010E, 0x0000010E, "query_broadcast_sm operation failed." },
    { 0x0000010F, 0x0000010F, "cancel_broadcast_sm operation failed." },
    { 0x00000110, 0x00000110, "Number of Repeated Broadcasts is invalid." },
    { 0x00000111, 0x00000111, "Broadcast Service Group is invalid." },
    { 0x00000112, 0x00000112, "Broadcast Channel Indicator is invalid." },
    { 0x00000400, 0x000004FF, "[Vendor-specific Error]" },
    { 0x00000500, 0xFFFFFFFF, "[Reserved]" },
    { 0, 0, NULL }
};

static const value_string vals_tlv_tags[] = {
    { 0x0005, "dest_addr_subunit" },
    { 0x0006, "dest_network_type" },
    { 0x0007, "dest_bearer_type" },
    { 0x0008, "dest_telematics_id" },
    { 0x000D, "source_addr_subunit" },
    { 0x000E, "source_network_type" },
    { 0x000F, "source_bearer_type" },
    { 0x0010, "source_telematics_id" },
    { 0x0017, "qos_time_to_live" },
    { 0x0019, "payload_type" },
    { 0x001D, "additional_status_info_text" },
    { 0x001E, "receipted_message_id" },
    { 0x0030, "ms_msg_wait_facilities" },
    { 0x0201, "privacy_indicator" },
    { 0x0202, "source_subaddress" },
    { 0x0203, "dest_subaddress" },
    { 0x0204, "user_message_reference" },
    { 0x0205, "user_response_code" },
    { 0x020A, "source_port" },
    { 0x020B, "dest_port" },
    { 0x020C, "sar_msg_ref_num" },
    { 0x020D, "language_indicator" },
    { 0x020E, "sar_total_segments" },
    { 0x020F, "sar_segment_seqnum" },
    { 0x0210, "sc_interface_version" },
    { 0x0302, "callback_num_pres_ind" },
    { 0x0303, "callback_num_atag" },
    { 0x0304, "number_of_messages" },
    { 0x0381, "callback_num" },
    { 0x0420, "dpf_result" },
    { 0x0421, "set_dpf" },
    { 0x0422, "ms_availability_status" },
    { 0x0423, "network_error_code" },
    { 0x0424, "message_payload" },
    { 0x0425, "delivery_failure_reason" },
    { 0x0426, "more_messages_to_send" },
    { 0x0427, "message_state" },
    { 0x0428, "congestion_state" },
    { 0x0501, "ussd_service_op" },
    { 0x0600, "broadcast_channel_indicator" },
    { 0x0601, "broadcast_content_type" },
    { 0x0602, "broadcast_content_type_info" },
    { 0x0603, "broadcast_message_class" },
    { 0x0604, "broadcast_rep_num" },
    { 0x0605, "broadcast_frequency_interval" },
    { 0x0606, "broadcast_area_identifier" },
    { 0x0607, "broadcast_error_status" },
    { 0x0608, "broadcast_area_success" },
    { 0x0609, "broadcast_end_time" },
    { 0x060A, "broadcast_service_group" },
    { 0x060B, "billing_identification" },
    { 0x060D, "source_network_id" },
    { 0x060E, "dest_network_id" },
    { 0x060F, "source_node_id" },
    { 0x0610, "dest_node_id" },
    { 0x0611, "dest_addr_np_resolution" },
    { 0x0612, "dest_addr_np_information" },
    { 0x0613, "dest_addr_np_country" },
    { 0x1201, "display_time" },
    { 0x1203, "sms_signal" },
    { 0x1204, "ms_validity" },
    { 0x130C, "alert_on_message_delivery" },
    { 0x1380, "its_reply_type" },
    { 0x1383, "its_session_info" },
    { 0, NULL }
};

static const value_string vals_addr_ton[] = {
    { 0, "Unknown" },
    { 1, "International" },
    { 2, "National" },
    { 3, "Network specific" },
    { 4, "Subscriber number" },
    { 5, "Alphanumeric" },
    { 6, "Abbreviated" },
    { 0, NULL }
};

static const value_string vals_addr_npi[] = {
    {  0, "Unknown" },
    {  1, "ISDN (E163/E164)" },
    {  3, "Data (X.121)" },
    {  4, "Telex (F.69)" },
    {  6, "Land mobile (E.212)" },
    {  8, "National" },
    {  9, "Private" },
    { 10, "ERMES" },
    { 14, "Internet (IP)" },
    { 18, "WAP client Id" },
    {  0, NULL }
};

static const value_string vals_esm_submit_msg_mode[] = {
    {  0x0, "Default SMSC mode" },
    {  0x1, "Datagram mode" },
    {  0x2, "Forward mode" },
    {  0x3, "Store and forward mode" },
    {  0, NULL }
};

static const value_string vals_esm_submit_msg_type[] = {
    {  0x0, "Default message type" },
    {  0x1, "Short message contains SMSC Delivery Receipt" },
    {  0x2, "Short message contains (E)SME delivery acknowledgement" },
    {  0x3, "Reserved" },
    {  0x4, "Short message contains (E)SME manual/user acknowledgement" },
    {  0x5, "Reserved" },
    {  0x6, "Short message contains conversation abort" },
    {  0x7, "Reserved" },
    {  0x8, "Short message contains intermediate delivery notification" },
    {  0, NULL }
};

static const value_string vals_esm_submit_features[] = {
    {  0x0, "No specific features selected" },
    {  0x1, "UDHI indicator" },
    {  0x2, "Reply path" },
    {  0x3, "UDHI and reply path" },
    {  0, NULL }
};

static const value_string vals_priority_flag[] = {
    {  0, "GSM: None      ANSI-136: Bulk         IS-95: Normal" },
    {  1, "GSM: priority  ANSI-136: Normal       IS-95: Interactive" },
    {  2, "GSM: priority  ANSI-136: Urgent       IS-95: Urgent" },
    {  3, "GSM: priority  ANSI-136: Very Urgent  IS-95: Emergency" },
    {  0, NULL }
};

static const value_string vals_regdel_receipt[] = {
    {  0x0, "No SMSC delivery receipt requested" },
    {  0x1, "Delivery receipt requested (for success or failure)" },
    {  0x2, "Delivery receipt requested (for failure)" },
    {  0x3, "Reserved in version <= 3.4; Delivery receipt requested (for success) in 5.0" },
    {  0, NULL }
};

static const value_string vals_regdel_acks[] = {
    {  0x0, "No recipient SME acknowledgement requested" },
    {  0x1, "SME delivery acknowledgement requested" },
    {  0x2, "SME manual/user acknowledgement requested" },
    {  0x3, "Both delivery and manual/user acknowledgement requested" },
    {  0, NULL }
};

static const value_string vals_regdel_notif[] = {
    {  0x0, "No intermediate notification requested" },
    {  0x1, "Intermediate notification requested" },
    {  0, NULL }
};

static const value_string vals_replace_if_present_flag[] = {
    {  0x0, "Don't replace" },
    {  0x1, "Replace" },
    {  0, NULL }
};

static const range_string rvals_data_coding[] = {
    {    0,    0, "SMSC default alphabet" },
    {    1,    1, "IA5 (CCITT T.50)/ASCII (ANSI X3.4)" },
    {    2,    2, "Octet unspecified (8-bit binary)" },
    {    3,    3, "Latin 1 (ISO-8859-1)" },
    {    4,    4, "Octet unspecified (8-bit binary)" },
    {    5,    5, "JIS (X 0208-1990)" },
    {    6,    6, "Cyrillic (ISO-8859-5)" },
    {    7,    7, "Latin/Hebrew (ISO-8859-8)" },
    {    8,    8, "UCS2 (ISO/IEC-10646)" },
    {    9,    9, "Pictogram Encoding" },
    {   10,   10, "ISO-2022-JP (Music codes)" },
    {   11,   12, "Reserved" },
    {   13,   13, "Extended Kanji JIS (X 0212-1990)" },
    {   14,   14, "KS C 5601" },
    {   15, 0xBF, "Reserved" },
    { 0xC0, 0xEF, "GSM MWI control - see [GSM 03.38]" },
    { 0xF0, 0xFF, "GSM message class control - see [GSM 03.38]" },
    {    0,    0, NULL }
};

static const value_string vals_message_state[] = {
    {  1, "ENROUTE" },
    {  2, "DELIVERED" },
    {  3, "EXPIRED" },
    {  4, "DELETED" },
    {  5, "UNDELIVERABLE" },
    {  6, "ACCEPTED" },
    {  7, "UNKNOWN" },
    {  8, "REJECTED" },
    {  0, NULL }
};

static const value_string vals_addr_subunit[] = {
    {  0, "Unknown -default-" },
    {  1, "MS Display" },
    {  2, "Mobile equipment" },
    {  3, "Smart card 1" },
    {  4, "External unit 1" },
    {  0, NULL }
};

static const value_string vals_network_type[] = {
    {  0, "Unknown" },
    {  1, "GSM" },
    {  2, "ANSI-136/TDMA" },
    {  3, "IS-95/CDMA" },
    {  4, "PDC" },
    {  5, "PHS" },
    {  6, "iDEN" },
    {  7, "AMPS" },
    {  8, "Paging network" },
    {  0, NULL }
};

static const value_string vals_bearer_type[] = {
    {  0, "Unknown" },
    {  1, "SMS" },
    {  2, "Circuit Switched Data (CSD)" },
    {  3, "Packet data" },
    {  4, "USSD" },
    {  5, "CDPD" },
    {  6, "DataTAC" },
    {  7, "FLEX/ReFLEX" },
    {  8, "Cell Broadcast" },
    {  0, NULL }
};

static const value_string vals_payload_type[] = {
    {  0, "Default" },
    {  1, "WCMP message" },
    {  0, NULL }
};

static const value_string vals_privacy_indicator[] = {
    {  0, "Not restricted -default-" },
    {  1, "Restricted" },
    {  2, "Confidential" },
    {  3, "Secret" },
    {  0, NULL }
};

static const value_string vals_language_indicator[] = {
    {  0, "Unspecified -default-" },
    {  1, "english" },
    {  2, "french" },
    {  3, "spanish" },
    {  4, "german" },
    {  5, "portuguese" },
    {  0, NULL }
};

static const value_string vals_display_time[] = {
    {  0, "Temporary" },
    {  1, "Default -default-" },
    {  2, "Invoke" },
    {  0, NULL }
};

static const value_string vals_ms_validity[] = {
    {  0, "Store indefinitely -default-" },
    {  1, "Power down" },
    {  2, "SID based registration area" },
    {  3, "Display only" },
    {  0, NULL }
};

static const value_string vals_dpf_result[] = {
    {  0, "DPF not set" },
    {  1, "DPF set" },
    {  0, NULL }
};

static const value_string vals_set_dpf[] = {
    {  0, "Not requested (Set DPF for delivery failure)" },
    {  1, "Requested (Set DPF for delivery failure)" },
    {  0, NULL }
};

static const value_string vals_ms_availability_status[] = {
    {  0, "Available -default-" },
    {  1, "Denied" },
    {  2, "Unavailable" },
    {  0, NULL }
};

static const value_string vals_delivery_failure_reason[] = {
    {  0, "Destination unavailable" },
    {  1, "Destination address invalid" },
    {  2, "Permanent network error" },
    {  3, "Temporary network error" },
    {  0, NULL }
};

static const value_string vals_more_messages_to_send[] = {
    {  0, "No more messages" },
    {  1, "More messages -default-" },
    {  0, NULL }
};

static const value_string vals_its_reply_type[] = {
    {  0, "Digit" },
    {  1, "Number" },
    {  2, "Telephone no." },
    {  3, "Password" },
    {  4, "Character line" },
    {  5, "Menu" },
    {  6, "Date" },
    {  7, "Time" },
    {  8, "Continue" },
    {  0, NULL }
};

static const value_string vals_ussd_service_op[] = {
    {  0, "PSSD indication" },
    {  1, "PSSR indication" },
    {  2, "USSR request" },
    {  3, "USSN request" },
    { 16, "PSSD response" },
    { 17, "PSSR response" },
    { 18, "USSR confirm" },
    { 19, "USSN confirm" },
    {  0, NULL }
};

static const value_string vals_msg_wait_ind[] = {
    {  0, "Set indication inactive" },
    {  1, "Set indication active" },
    {  0, NULL }
};

static const value_string vals_msg_wait_type[] = {
    {  0, "Voicemail message waiting" },
    {  1, "Fax message waiting" },
    {  2, "Electronic mail message waiting" },
    {  3, "Other message waiting" },
    {  0, NULL }
};

static const value_string vals_callback_num_pres[] = {
    {  0, "Presentation allowed" },
    {  1, "Presentation restricted" },
    {  2, "Number not available" },
    {  3, "[Reserved]" },
    {  0, NULL }
};

static const value_string vals_callback_num_scrn[] = {
    {  0, "User provided, not screened" },
    {  1, "User provided, verified and passed" },
    {  2, "User provided, verified and failed" },
    {  3, "Network provided" },
    {  0, NULL }
};

static const value_string vals_network_error_type[] = {
    {  1, "ANSI-136 (Access Denied Reason)" },
    {  2, "IS-95 (Access Denied Reason)" },
    {  3, "GSM" },
    {  4, "[Reserved] in <= 3.4; ANSI 136 Cause Code in 5.0" },
    {  5, "[Reserved] in <= 3.4; IS 95 Cause Code in 5.0" },
    {  6, "[Reserved] in <= 3.4; ANSI-41 Error in 5.0" },
    {  7, "[Reserved] in <= 3.4; SMPP Error in 5.0" },
    {  8, "[Reserved] in <= 3.4; Message Center Specific in 5.0" },
    {  0, NULL }
};

static const value_string vals_its_session_ind[] = {
    {  0, "End of session indicator inactive" },
    {  1, "End of session indicator active" },
    {  0, NULL }
};

/* Data Coding Scheme: see 3GPP TS 23.040 and 3GPP TS 23.038.
 * Note values below 0x0C are not used in SMPP. */
static const value_string vals_dcs_sms_coding_group[] = {
#if 0
    { 0x00, "SMS DCS: General Data Coding indication - Uncompressed text, no message class" },
    { 0x01, "SMS DCS: General Data Coding indication - Uncompressed text" },
    { 0x02, "SMS DCS: General Data Coding indication - Compressed text, no message class" },
    { 0x03, "SMS DCS: General Data Coding indication - Compressed text" },
    { 0x04, "SMS DCS: Message Marked for Automatic Deletion - Uncompressed text, no message class" },
    { 0x05, "SMS DCS: Message Marked for Automatic Deletion - Uncompressed text" },
    { 0x06, "SMS DCS: Message Marked for Automatic Deletion - Compressed text, no message class" },
    { 0x07, "SMS DCS: Message Marked for Automatic Deletion - Compressed text" },
    { 0x08, "SMS DCS: Reserved" },
    { 0x09, "SMS DCS: Reserved" },
    { 0x0A, "SMS DCS: Reserved" },
    { 0x0B, "SMS DCS: Reserved" },
#endif
    { 0x0C, "SMS DCS: Message Waiting Indication - Discard Message" },
    { 0x0D, "SMS DCS: Message Waiting Indication - Store Message (GSM 7-bit default alphabet)" },
    { 0x0E, "SMS DCS: Message Waiting Indication - Store Message (UCS-2 character set)" },
    { 0x0F, "SMS DCS: Data coding / message class" },
    { 0x00, NULL }
};

static const value_string vals_dcs_charset[] = {
    { 0x00, "GSM 7-bit default alphabet" },
    { 0x01, "8-bit data" },
    { 0x00, NULL }
};

static const value_string vals_dcs_class[] = {
    { 0x00, "Class 0" },
    { 0x01, "Class 1 - ME specific" },
    { 0x02, "Class 2 - (U)SIM specific" },
    { 0x03, "Class 3 - TE specific" },
    { 0x00, NULL }
};

static const value_string vals_alert_on_message_delivery[] = {
    { 0x00, "Use mobile default alert (Default)" },
    { 0x01, "Use low-priority alert" },
    { 0x02, "Use medium-priority alert" },
    { 0x03, "Use high-priority alert" },
    { 0x00, NULL }
};

static const range_string vals_congestion_state[] = {
    {0,     0,      "Idle"},
    {1,     29,     "Low Load"},
    {30,    49,     "Medium Load"},
    {50,    79,     "High Load"},
    {80,    89,     "Optimum Load"}, /*Specs says 80-90, but that is probably a mistake */
    {90,    99,     "Nearing Congestion"},
    {100,   100,    "Congested / Maximum Load"},
    { 0,    0,      NULL }
};

static const range_string vals_broadcast_channel_indicator[] = {
    {0,     0,      "Basic Broadcast Channel (Default)"},
    {1,     1,      "Extended Broadcast Channel"},
    {2,     255,    "[Reserved]"},
    { 0,    0,      NULL }
};

static const value_string vals_broadcast_message_class[] = {
    {0, "No Class Specified (default)"},
    {1, "Class 1 (User Defined)"},
    {2, "Class 2 (User Defined)"},
    {3, "Class 3 (Terminal Equipment)"},
    {0, NULL }
};

static const range_string vals_broadcast_area_success[] = {
    {0,     100,    "%"},
    {101,   254,    "[Reserved]"},
    {255,   255,    "Information not available"},
    { 0,    0,      NULL }
};

static const value_string vals_broadcast_content_type_nw[] = {
    {0,     "Generic"},
    {1,     "GSM [23041]"},
    {2,     "TDMA [IS824][ANSI-41]"},
    {3,     "CDMA [IS824][IS637]"},
    {0,     NULL }
};

static const value_string vals_broadcast_content_type_type[] = {
    {0x0000,        "[System Service] Index"},
    {0x0001,        "[System Service] Emergency Broadcasts"},
    {0x0002,        "[System Service] IRDB Download"},
    {0x0010,        "[News Service] News Flashes"},
    {0x0011,        "[News Service] General News (Local)"},
    {0x0012,        "[News Service] General News (Regional)"},
    {0x0013,        "[News Service] General News (National)"},
    {0x0014,        "[News Service] General News (International)"},
    {0x0015,        "[News Service] Business/Financial News (Local)"},
    {0x0016,        "[News Service] Business/Financial News (Regional)"},
    {0x0017,        "[News Service] Business/Financial News (National)"},
    {0x0018,        "[News Service] Business/Financial News (International)"},
    {0x0019,        "[News Service] Sports News (Local)"},
    {0x001A,        "[News Service] Sports News (Regional)"},
    {0x001B,        "[News Service] Sports News (National)"},
    {0x001C,        "[News Service] Sports News (International)"},
    {0x001D,        "[News Service] Entertainment News (Local)"},
    {0x001E,        "[News Service] Entertainment News (Regional)"},
    {0x001F,        "[News Service] Entertainment News (National)"},
    {0x0020,        "[News Service] Entertainment News (International)"},
    {0x0021,        "[Subscriber Information Services] Medical/Health/Hospitals"},
    {0x0022,        "[Subscriber Information Services] Doctors"},
    {0x0023,        "[Subscriber Information Services] Pharmacy"},
    {0x0030,        "[Subscriber Information Services] Local Traffic/Road Reports"},
    {0x0031,        "[Subscriber Information Services] Long Distance Traffic/Road Reports"},
    {0x0032,        "[Subscriber Information Services] Taxis"},
    {0x0033,        "[Subscriber Information Services] Weather"},
    {0x0034,        "[Subscriber Information Services] Local Airport Flight Schedules"},
    {0x0035,        "[Subscriber Information Services] Restaurants"},
    {0x0036,        "[Subscriber Information Services] Lodgings"},
    {0x0037,        "[Subscriber Information Services] Retail Directory"},
    {0x0038,        "[Subscriber Information Services] Advertisements"},
    {0x0039,        "[Subscriber Information Services] Stock Quotes"},
    {0x0040,        "[Subscriber Information Services] Employment Opportunities"},
    {0x0041,        "[Subscriber Information Services] Technology News"},
    {0x0070,        "[Carrier Information Services] District (Base Station Info)"},
    {0x0071,        "[Carrier Information Services] Network Information"},
    {0x0080,        "[Subscriber Care Services] Operator Services"},
    {0x0081,        "[Subscriber Care Services] Directory Enquiries (National)"},
    {0x0082,        "[Subscriber Care Services] Directory Enquiries (International)"},
    {0x0083,        "[Subscriber Care Services] Customer Care (National)"},
    {0x0084,        "[Subscriber Care Services] Customer Care (International)"},
    {0x0085,        "[Subscriber Care Services] Local Date/Time/Time Zone"},
    {0x0100,        "[Multi Category Services] Multi Category Services"},
    {0x0000,        NULL }
};

static const value_string vals_broadcast_frequency_interval_unit[] = {
    {0x00,  "As frequently as possible"},
    {0x08,  "seconds"},
    {0x09,  "minutes"},
    {0x0A,  "hours"},
    {0x0B,  "days"},
    {0x0C,  "weeks"},
    {0x0D,  "months"},
    {0x0E,  "years"},
    {0x00,  NULL }
};

static const value_string vals_dest_addr_np_resolution[] = {
    {0x00,  "query has not been performed (default)"},
    {0x01,  "query has been performed, number not ported"},
    {0x02,  "query has been performed, number ported"},
    {0x00,  NULL }
};

static const range_string vals_broadcast_area_identifier_format[] = {
    {0,   0, "Alias / Name"},
    {1,   1, "Ellipsoid Arc"},
    {2,   2, "Polygon"},
    {3, 255, "[Reserved]"},
    {0, 0,  NULL }
};

/* Huawei SMPP+ extensions */
static const value_string vals_mo_mt_flag[] = {
    { 0x01, "MO" },
    { 0x02, "MT" },
    { 0x03, "Reserved" },
    { 0x00, NULL }
};

static const value_string vals_operation_result[] = {
    { 0x00, "Successful" },
    { 0x01, "Protocol is not supported" },
    { 0x0a, "Others" },
    { 0x0b, "MO account does not exist" },
    { 0x0c, "MT account does not exist" },
    { 0x0d, "MO account state is abnormal" },
    { 0x0e, "MT account state is abnormal" },
    { 0x0f, "MO account balance is not enough" },
    { 0x10, "MT account balance is not enough" },
    { 0x11, "MO VAS is not supported" },
    { 0x12, "MT VAS is not supported" },
    { 0x13, "MO user is post-paid user and checked success" },
    { 0x14, "MT user is post-paid user and checked success" },
    { 0x15, "MO post-paid user status is incorrect" },
    { 0x16, "MT post-paid user status is incorrect" },
    { 0x17, "MO post-paid user account balance is not sufficient" },
    { 0x18, "MT post-paid user account balance is not sufficient" },
    { 0x19, "MO post-paid user value-added services are not supported" },
    { 0x1a, "MT post-paid user value-added services are not supported" },
    { 0x00, NULL }
};

static const value_string vals_notify_mode[] = {
    { 0x01, "Deliver the report when it's successful or failed" },
    { 0x02, "Deliver the report only when it's failed" },
    { 0x03, "Deliver the report only when it's successful" },
    { 0x04, "Never deliver the report" },
    { 0x00, NULL }
};

static const value_string vals_delivery_result[] = {
    { 0x00, "Successful" },
    { 0x01, "Unsuccessful" },
    { 0x00, NULL }
};

static const value_string vals_msc_addr_noa    [] = {
    { 0x00, "Spare" },
    { 0x01, "Subscriber number" },
    { 0x02, "Unknown" },
    { 0x03, "National number" },
    { 0x04, "International" },
    { 0x00, NULL }
};

static const value_string vals_msc_addr_npi    [] = {
    { 0x00, "Spare" },
    { 0x01, "ISDN (Telephony) numbering plan (Recommendation E.164)" },
    { 0x02, "Spare" },
    { 0x03, "Data numbering plan (Recommendation X.121) (national use)" },
    { 0x04, "Telex numbering plan (Recommendation F.69) (national use)" },
    { 0x05, "Reserved for national use" },
    { 0x06, "Reserved for national use" },
    { 0x07, "Spare" },
    { 0x00, NULL }
};

static int * const regdel_fields[] = {
    &hf_smpp_regdel_receipt,
    &hf_smpp_regdel_acks,
    &hf_smpp_regdel_notif,
    NULL
};

static int * const submit_msg_fields[] = {
    &hf_smpp_esm_submit_msg_mode,
    &hf_smpp_esm_submit_msg_type,
    &hf_smpp_esm_submit_features,
    NULL
};

static dissector_handle_t gsm_sms_handle;

static smpp_data_t *
get_smpp_data(packet_info *pinfo)
{
    smpp_data_t *smpp_data = NULL;

    smpp_data = (smpp_data_t*)p_get_proto_data(pinfo->pool, pinfo, proto_smpp, 0);
    if (!smpp_data) {
        smpp_data = wmem_new0(pinfo->pool, smpp_data_t);
        p_add_proto_data(pinfo->pool, pinfo, proto_smpp, 0, smpp_data);
    }

    return smpp_data;
}

/*
 * For Stats Tree
 */
static void
smpp_stats_tree_init(stats_tree* st)
{
    st_smpp_ops = stats_tree_create_node(st, "SMPP Operations", 0, STAT_DT_INT, TRUE);
    st_smpp_req = stats_tree_create_node(st, "SMPP Requests", st_smpp_ops, STAT_DT_INT, TRUE);
    st_smpp_res = stats_tree_create_node(st, "SMPP Responses", st_smpp_ops, STAT_DT_INT, TRUE);
    st_smpp_res_status = stats_tree_create_node(st, "SMPP Response Status", 0, STAT_DT_INT, TRUE);

}

static tap_packet_status
smpp_stats_tree_per_packet(stats_tree *st, /* st as it was passed to us */
                           packet_info *pinfo _U_,
                           epan_dissect_t *edt _U_,
                           const void *p,
                           tap_flags_t flags _U_) /* Used for getting SMPP command_id values */
{
    const smpp_tap_rec_t* tap_rec = (const smpp_tap_rec_t*)p;

    tick_stat_node(st, "SMPP Operations", 0, TRUE);

    if ((tap_rec->command_id & SMPP_COMMAND_ID_RESPONSE_MASK) == SMPP_COMMAND_ID_RESPONSE_MASK) /* Response */
    {
        tick_stat_node(st, "SMPP Responses", st_smpp_ops, TRUE);
        tick_stat_node(st, val_to_str(tap_rec->command_id, vals_command_id, "Unknown 0x%08x"), st_smpp_res, FALSE);

        tick_stat_node(st, "SMPP Response Status", 0, TRUE);
        tick_stat_node(st, rval_to_str(tap_rec->command_status, rvals_command_status, "Unknown 0x%08x"), st_smpp_res_status, FALSE);

    }
    else  /* Request */
    {
        tick_stat_node(st, "SMPP Requests", st_smpp_ops, TRUE);
        tick_stat_node(st, val_to_str(tap_rec->command_id, vals_command_id, "Unknown 0x%08x"), st_smpp_req, FALSE);
    }

    return TAP_PACKET_REDRAW;
}

/*!
 * SMPP equivalent of mktime() (3). Convert date to standard 'time_t' format
 *
 * \param       datestr The SMPP-formatted date to convert
 * \param       secs    Returns the 'time_t' equivalent
 * \param       nsecs   Returns the additional nano-seconds
 *
 * \return              Whether time is specified relative (TRUE) or absolute (FALSE)
 *                      If invalid abs time: return *secs = (time_t)(-1) and *nsecs=0
 */

/* XXX: This function needs better error checking and handling */

static gboolean
smpp_mktime(const char *datestr, time_t *secs, int *nsecs)
{
    struct tm    r_time;
    time_t       t_diff;
    gboolean     relative = (datestr[15] == 'R') ? TRUE : FALSE;

    r_time.tm_year = 10 * (datestr[0] - '0') + (datestr[1] - '0');
    /*
     * Y2K rollover date as recommended in appendix C
     */
    if (r_time.tm_year < 38)
        r_time.tm_year += 100;
    r_time.tm_mon  = 10 * (datestr[2] - '0') + (datestr[3] - '0');
    r_time.tm_mon--;
    r_time.tm_mday = 10 * (datestr[4] - '0') + (datestr[5] - '0');
    r_time.tm_hour = 10 * (datestr[6] - '0') + (datestr[7] - '0');
    r_time.tm_min  = 10 * (datestr[8] - '0') + (datestr[9] - '0');
    r_time.tm_sec  = 10 * (datestr[10] - '0') + (datestr[11] - '0');
    r_time.tm_isdst = -1;

    if (relative == FALSE) {
        *secs = mktime_utc(&r_time);
        *nsecs = 0;
        if (*secs == (time_t)(-1)) {
            return relative;
        }
        *nsecs = (datestr[12] - '0') * 100000000;

        t_diff = (10 * (datestr[13] - '0') + (datestr[14] - '0')) * 900;
        if (datestr[15] == '-')
            /* Represented time is behind UTC, shift it forward to UTC */
            *secs += t_diff;
        else if (datestr[15] == '+')
            /* Represented time is ahead of UTC, shift it backward to UTC */
            *secs -= t_diff;
    } else {
        *secs = r_time.tm_sec + 60 *
            (r_time.tm_min + 60 *
             (r_time.tm_hour + 24 *
              r_time.tm_mday));
        *nsecs = 0;
    }

    return relative;
}

/*!
 * Scanning routines to add standard types (byte, int, string...) to the
 * protocol tree.
 *
 * \param       tree    The protocol tree to add to
 * \param       tvb     Buffer containing the data
 * \param       field   Actual field whose value needs displaying
 * \param       offset  Location of field in buffer, returns location of
 *                      next field
 */
static void
smpp_handle_string(proto_tree *tree, tvbuff_t *tvb, int field, int *offset)
{
    guint        len;

    len = tvb_strsize(tvb, *offset);
    if (len > 1) {
        proto_tree_add_item(tree, field, tvb, *offset, len, ENC_NA);
    }
    (*offset) += len;
}

static const char *
smpp_handle_string_return(proto_tree *tree, tvbuff_t *tvb, packet_info *pinfo, int field, int *offset)
{
    gint         len;
    const char* str = (const char *)tvb_get_stringz_enc(pinfo->pool, tvb, *offset, &len, ENC_ASCII);

    if (len > 0)
        proto_tree_add_string(tree, field, tvb, *offset, len, str);

    (*offset) += len;
    return str;
}

static void
smpp_handle_string_z(proto_tree *tree, tvbuff_t *tvb, int field, int *offset,
                const char *null_string)
{
    gint         len;

    len = tvb_strsize(tvb, *offset);
    if (len > 1) {
        proto_tree_add_item(tree, field, tvb, *offset, len, ENC_NA);
    } else {
        proto_tree_add_string(tree, field, tvb, *offset, len, null_string);
    }
    (*offset) += len;
}

static void
smpp_handle_time(proto_tree *tree, tvbuff_t *tvb, packet_info *pinfo,
                 int field, int field_R, int *offset)
{
    char     *strval;
    gint      len;
    nstime_t  tmptime;

    strval = (char *) tvb_get_stringz_enc(pinfo->pool, tvb, *offset, &len, ENC_ASCII);
    if (*strval)
    {
        if (len >= 16)
        {
            if (smpp_mktime(strval, &tmptime.secs, &tmptime.nsecs))
                proto_tree_add_time(tree, field_R, tvb, *offset, len, &tmptime);
            else
                proto_tree_add_time(tree, field, tvb, *offset, len, &tmptime);
        }
        else
        {
            tmptime.secs = 0;
            tmptime.nsecs = 0;
            proto_tree_add_time_format_value(tree, field_R, tvb, *offset, len, &tmptime, "%s", strval);
        }
    }
    *offset += len;
}

/*!
 * Scanning routine to handle the destination-list of 'submit_multi'
 *
 * \param       tree    The protocol tree to add to
 * \param       tvb     Buffer containing the data
 * \param       offset  Location of field in buffer, returns location of
 *                      next field
 */
static void
smpp_handle_dlist(proto_tree *tree, tvbuff_t *tvb, int *offset)
{
    guint8       entries;
    int          tmpoff = *offset;
    proto_tree  *sub_tree = NULL;
    guint8       dest_flag;

    if ((entries = tvb_get_guint8(tvb, tmpoff++))) {
        proto_item  *pi;
        pi = proto_tree_add_item(tree, hf_smpp_dlist, tvb, *offset, 1, ENC_NA);
        sub_tree = proto_item_add_subtree(pi, ett_dlist);
    }
    while (entries--)
    {
        dest_flag = tvb_get_guint8(tvb, tmpoff++);
        if (dest_flag == 1)                     /* SME address  */
        {
            proto_tree_add_item(sub_tree, hf_smpp_dest_addr_ton, tvb, tmpoff, 1, ENC_NA);
            tmpoff += 1;
            proto_tree_add_item(sub_tree, hf_smpp_dest_addr_npi, tvb, tmpoff, 1, ENC_NA);
            tmpoff += 1;
            smpp_handle_string(sub_tree,tvb,hf_smpp_destination_addr,&tmpoff);
        }
        else                                    /* Distribution list    */
        {
            smpp_handle_string(sub_tree, tvb, hf_smpp_dl_name, &tmpoff);
        }
    }
    *offset = tmpoff;
}

/*!
 * Scanning routine to handle the destination result list
 * of 'submit_multi_resp'
 *
 * \param       tree    The protocol tree to add to
 * \param       tvb     Buffer containing the data
 * \param       offset  Location of field in buffer, returns location of
 *                      next field
 */
static void
smpp_handle_dlist_resp(proto_tree *tree, tvbuff_t *tvb, int *offset)
{
    guint8       entries;
    int          tmpoff = *offset;
    proto_tree  *sub_tree = NULL;

    if ((entries = tvb_get_guint8(tvb, tmpoff++))) {
        proto_item  *pi;
        pi = proto_tree_add_item(tree, hf_smpp_dlist_resp,
                                  tvb, *offset, 1, ENC_NA);
        sub_tree = proto_item_add_subtree(pi, ett_dlist_resp);
    }
    while (entries--)
    {
        proto_tree_add_item(sub_tree, hf_smpp_dest_addr_ton, tvb, tmpoff, 1, ENC_NA);
        tmpoff += 1;
        proto_tree_add_item(sub_tree, hf_smpp_dest_addr_npi, tvb, tmpoff, 1, ENC_NA);
        tmpoff += 1;
        smpp_handle_string(sub_tree,tvb,hf_smpp_destination_addr,&tmpoff);
        proto_tree_add_item(sub_tree, hf_smpp_error_status_code, tvb, tmpoff, 4, ENC_BIG_ENDIAN);
        tmpoff += 4;
    }
    *offset = tmpoff;
}

/*!
 * Scanning routine to handle all optional parameters of SMPP-operations.
 * The parameters have the format Tag Length Value (TLV), with a 2-byte tag
 * and 2-byte length.
 *
 * \param       tree    The protocol tree to add to
 * \param       tvb     Buffer containing the data
 * \param       offset  Location of field in buffer, returns location of
 *                      next field
 */
static void
smpp_handle_tlv(proto_tree *tree, tvbuff_t *tvb, packet_info *pinfo, int *offset, tvbuff_t **tvb_msg)
{
    proto_tree *tlvs_tree = NULL;
    proto_item *pi;
    smpp_data_t *smpp_data;
    guint16 source_port = 0, dest_port = 0, sm_id = 0;
    guint8 frags = 0, frag = 0;
    gboolean source_port_found = FALSE, dest_port_found = FALSE;
    gboolean sm_id_found = FALSE;

    if (tvb_reported_length_remaining(tvb, *offset) >= 1) {
        pi = proto_tree_add_item(tree, hf_smpp_opt_params,
                                 tvb, *offset, -1, ENC_NA);
        tlvs_tree = proto_item_add_subtree(pi, ett_opt_params);
    }

    while (tvb_reported_length_remaining(tvb, *offset) >= 1)
    {
        proto_item *sub_tree;
        guint16  tag;
        guint16  length;

        tag = tvb_get_ntohs(tvb, *offset);
        length = tvb_get_ntohs(tvb, (*offset+2));

        pi = proto_tree_add_none_format(tlvs_tree, hf_smpp_opt_param, tvb,
                                        *offset, length+4,
                                        "Optional parameter: %s (0x%04x)",
                                        val_to_str(tag, vals_tlv_tags, "0x%04x"), tag);
        sub_tree = proto_item_add_subtree(pi, ett_opt_param);
        proto_tree_add_uint(sub_tree,hf_smpp_opt_param_tag,tvb,*offset,2,tag);
        proto_tree_add_uint(sub_tree,hf_smpp_opt_param_len,tvb,*offset+2,2,length);

        *offset += 4;

        switch (tag) {
            case  0x0005:       /* dest_addr_subunit    */
                proto_tree_add_item(sub_tree, hf_smpp_dest_addr_subunit, tvb, *offset, 1, ENC_NA);
                (*offset) += 1;
                break;
            case  0x0006:       /* dest_network_type    */
                proto_tree_add_item(sub_tree, hf_smpp_dest_network_type, tvb, *offset, 1, ENC_NA);
                (*offset) += 1;
                break;
            case  0x0007:       /* dest_bearer_type     */
                proto_tree_add_item(sub_tree, hf_smpp_dest_bearer_type, tvb, *offset, 1, ENC_NA);
                (*offset) += 1;
                break;
            case  0x0008:       /* dest_telematics_id   */
                proto_tree_add_item(sub_tree, hf_smpp_dest_telematics_id, tvb, *offset, 2, ENC_BIG_ENDIAN);
                (*offset) += 2;
                break;
            case  0x000D:       /* source_addr_subunit  */
                proto_tree_add_item(sub_tree, hf_smpp_source_addr_subunit, tvb, *offset, 1, ENC_NA);
                (*offset) += 1;
                break;
            case  0x000E:       /* source_network_type  */
                proto_tree_add_item(sub_tree, hf_smpp_source_network_type, tvb, *offset, 1, ENC_NA);
                (*offset) += 1;
                break;
            case  0x000F:       /* source_bearer_type   */
                proto_tree_add_item(sub_tree, hf_smpp_source_bearer_type, tvb, *offset, 1, ENC_NA);
                (*offset) += 1;
                break;
            case  0x0010:       /* source_telematics_id */
                proto_tree_add_item(sub_tree, hf_smpp_source_telematics_id, tvb, *offset, 1, ENC_NA);
                (*offset) += 1;
                break;
            case  0x0017:       /* qos_time_to_live     */
                proto_tree_add_item(sub_tree, hf_smpp_qos_time_to_live, tvb, *offset, 4, ENC_BIG_ENDIAN);
                (*offset) += 4;
                break;
            case  0x0019:       /* payload_type */
                proto_tree_add_item(sub_tree, hf_smpp_payload_type, tvb, *offset, 1, ENC_NA);
                (*offset) += 1;
                break;
            case  0x001D:       /* additional_status_info_text  */
                if (length)
                    proto_tree_add_item(sub_tree, hf_smpp_additional_status_info_text,
                        tvb, *offset, length, ENC_NA | ENC_ASCII);
                (*offset) += length;
                break;
            case  0x001E:       /* receipted_message_id */
                if (length)
                    proto_tree_add_item(sub_tree, hf_smpp_receipted_message_id,
                        tvb, *offset, length, ENC_NA | ENC_ASCII);
                (*offset) += length;
                break;
            case  0x0030: {       /* ms_msg_wait_facilities       */
                static int * const fields[] = {
                    &hf_smpp_msg_wait_ind,
                    &hf_smpp_msg_wait_type,
                    NULL
                };


                proto_tree_add_bitmask_list(sub_tree, tvb, *offset, 1, fields, ENC_NA);
                (*offset)++;
                }
                break;
            case  0x0201:       /* privacy_indicator    */
                proto_tree_add_item(sub_tree, hf_smpp_privacy_indicator, tvb, *offset, 1, ENC_NA);
                (*offset) += 1;
                break;
            case  0x0202:       /* source_subaddress    */
                if (length) {
                    proto_tree_add_item(sub_tree, hf_smpp_source_subaddress,
                                    tvb, *offset, length, ENC_NA);
                    (*offset) += length;
                }
                break;
            case  0x0203:       /* dest_subaddress      */
                if (length) {
                    proto_tree_add_item(sub_tree, hf_smpp_dest_subaddress,
                                    tvb, *offset, length, ENC_NA);
                    (*offset) += length;
                }
                break;
            case  0x0204:       /* user_message_reference       */
                proto_tree_add_item(sub_tree, hf_smpp_user_message_reference, tvb, *offset, 2, ENC_BIG_ENDIAN);
                (*offset) += 2;
                break;
            case  0x0205:       /* user_response_code   */
                proto_tree_add_item(sub_tree, hf_smpp_user_response_code, tvb, *offset, 1, ENC_NA);
                (*offset) += 1;
                break;
            case  0x020A:       /* source_port  */
                proto_tree_add_item(sub_tree, hf_smpp_source_port, tvb, *offset, 2, ENC_BIG_ENDIAN);
                source_port = tvb_get_ntohs(tvb, *offset);
                source_port_found = TRUE;
                (*offset) += 2;
                break;
            case  0x020B:       /* destination_port     */
                proto_tree_add_item(sub_tree, hf_smpp_destination_port, tvb, *offset, 2, ENC_BIG_ENDIAN);
                dest_port = tvb_get_ntohs(tvb, *offset);
                dest_port_found = TRUE;
                (*offset) += 2;
                break;
            case  0x020C:       /* sar_msg_ref_num      */
                proto_tree_add_item(sub_tree, hf_smpp_sar_msg_ref_num, tvb, *offset, 2, ENC_BIG_ENDIAN);
                sm_id = tvb_get_ntohs(tvb, *offset);
                sm_id_found = TRUE;
                (*offset) += 2;
                break;
            case  0x020D:       /* language_indicator   */
                proto_tree_add_item(sub_tree, hf_smpp_language_indicator, tvb, *offset, 1, ENC_NA);
                (*offset) += 1;
                break;
            case  0x020E:       /* sar_total_segments   */
                proto_tree_add_item(sub_tree, hf_smpp_sar_total_segments, tvb, *offset, 1, ENC_NA);
                frags = tvb_get_guint8(tvb, *offset);
                (*offset) += 1;
                break;
            case  0x020F:       /* sar_segment_seqnum   */
                proto_tree_add_item(sub_tree, hf_smpp_sar_segment_seqnum, tvb, *offset, 1, ENC_NA);
                frag = tvb_get_guint8(tvb, *offset);
                (*offset) += 1;
                break;
            case  0x0210:       /* SC_interface_version */
                proto_tree_add_item(sub_tree, hf_smpp_SC_interface_version, tvb, *offset, 1, ENC_NA);
                (*offset) += 1;
                break;
            case  0x0302: {      /* callback_num_pres_ind        */

                static int * const fields[] = {
                    &hf_smpp_callback_num_pres,
                    &hf_smpp_callback_num_scrn,
                    NULL
                };

                proto_tree_add_bitmask_list(sub_tree, tvb, *offset, 1, fields, ENC_NA);
                (*offset)++;
                }
                break;
            case  0x0303:       /* callback_num_atag    */
                if (length)
                    proto_tree_add_item(sub_tree, hf_smpp_callback_num_atag,
                                        tvb, *offset, length, ENC_NA);
                (*offset) += length;
                break;
            case  0x0304:       /* number_of_messages   */
                proto_tree_add_item(sub_tree, hf_smpp_number_of_messages, tvb, *offset, 1, ENC_NA);
                (*offset) += 1;
                break;
            case  0x0381:       /* callback_num */
                if (length)
                    proto_tree_add_item(sub_tree, hf_smpp_callback_num,
                                        tvb, *offset, length, ENC_NA);
                (*offset) += length;
                break;
            case  0x0420:       /* dpf_result   */
                proto_tree_add_item(sub_tree, hf_smpp_dpf_result, tvb, *offset, 1, ENC_NA);
                (*offset) += 1;
                break;
            case  0x0421:       /* set_dpf      */
                proto_tree_add_item(sub_tree, hf_smpp_set_dpf, tvb, *offset, 1, ENC_NA);
                (*offset) += 1;
                break;
            case  0x0422:       /* ms_availability_status       */
                proto_tree_add_item(sub_tree, hf_smpp_ms_availability_status, tvb, *offset, 1, ENC_NA);
                (*offset) += 1;
                break;
            case  0x0423:       /* network_error_code   */
                proto_tree_add_item(sub_tree, hf_smpp_network_error_type, tvb, *offset, 1, ENC_NA);
                (*offset) += 1;
                proto_tree_add_item(sub_tree, hf_smpp_network_error_code, tvb, *offset, 2, ENC_BIG_ENDIAN);
                (*offset) += 2;
                break;
            case  0x0424:       /* message_payload      */
                if (length) {
                    pi = proto_tree_add_item(sub_tree, hf_smpp_message_payload,
                                             tvb, *offset, length, ENC_NA);
                    if (tvb_msg) {
                        if (*tvb_msg != NULL) {
                            expert_add_info(pinfo, pi, &ei_smpp_message_payload_duplicate);
                        }
                        *tvb_msg = tvb_new_subset_length(tvb, *offset, length);
                    }
                }
                (*offset) += length;
                break;
            case  0x0425:       /* delivery_failure_reason      */
                proto_tree_add_item(sub_tree, hf_smpp_delivery_failure_reason, tvb, *offset, 1, ENC_NA);
                (*offset) += 1;
                break;
            case  0x0426:       /* more_messages_to_send        */
                proto_tree_add_item(sub_tree, hf_smpp_more_messages_to_send, tvb, *offset, 1, ENC_NA);
                (*offset) += 1;
                break;
            case  0x0427:       /* message_state        */
                proto_tree_add_item(sub_tree, hf_smpp_message_state, tvb, *offset, 1, ENC_NA);
                (*offset) += 1;
                break;
            case        0x0428: /* congestion_state */
                proto_tree_add_item(sub_tree, hf_smpp_congestion_state, tvb, *offset, 1, ENC_NA);
                (*offset) += 1;
                break;
            case  0x0501:       /* ussd_service_op      */
                proto_tree_add_item(sub_tree, hf_smpp_ussd_service_op, tvb, *offset, 1, ENC_NA);
                (*offset) += 1;
                break;
            case 0x0600:        /* broadcast_channel_indicator */
                proto_tree_add_item(sub_tree, hf_smpp_broadcast_channel_indicator, tvb, *offset, 1, ENC_NA);
                (*offset) += 1;
                break;
            case 0x0601:        /* broadcast_content_type */
                proto_tree_add_item(sub_tree, hf_smpp_broadcast_content_type_nw, tvb, *offset, 1, ENC_NA);
                (*offset) += 1;
                proto_tree_add_item(sub_tree, hf_smpp_broadcast_content_type_type, tvb, *offset, 2, ENC_BIG_ENDIAN);
                (*offset) += 2;
                break;
            case 0x0602:        /* broadcast_content_type_info */
                if (length)
                    proto_tree_add_item(sub_tree, hf_smpp_broadcast_content_type_info,
                                        tvb, *offset, length, ENC_NA);
                (*offset) += length;
                break;
            case 0x0603:        /* broadcast_message_class */
                proto_tree_add_item(sub_tree, hf_smpp_broadcast_message_class, tvb, *offset, 1, ENC_NA);
                (*offset) += 1;
                break;
            case 0x0604:        /* broadcast_rep_num */
                proto_tree_add_item(sub_tree, hf_smpp_broadcast_rep_num, tvb, *offset, 1, ENC_NA);
                (*offset) += 1;
                break;
            case 0x0605:        /* broadcast_frequency_interval */
                proto_tree_add_item(sub_tree, hf_smpp_broadcast_frequency_interval_unit, tvb, *offset, 1, ENC_NA);
                (*offset) += 1;
                proto_tree_add_item(sub_tree, hf_smpp_broadcast_frequency_interval_value, tvb, *offset, 2, ENC_BIG_ENDIAN);
                (*offset) += 2;
                break;
            case 0x0606:        /* broadcast_area_identifier */
                proto_tree_add_item(sub_tree, hf_smpp_broadcast_area_identifier_format, tvb, *offset, 1, ENC_NA);
                proto_tree_add_item(sub_tree, hf_smpp_broadcast_area_identifier,
                                        tvb, *offset, length, ENC_NA);
                (*offset) += length;
                break;
            case 0x0607:        /* broadcast_error_status */
                proto_tree_add_item(sub_tree, hf_smpp_broadcast_error_status, tvb, *offset, 4, ENC_BIG_ENDIAN);
                (*offset) += 4;
                break;
            case 0x0608:        /* broadcast_area_success */
                proto_tree_add_item(sub_tree, hf_smpp_broadcast_area_success, tvb, *offset, 1, ENC_NA);
                (*offset) += 1;
                break;
            case 0x0609:        /* broadcast_end_time */
                smpp_handle_time(sub_tree, tvb, pinfo, hf_smpp_broadcast_end_time,
                                hf_smpp_broadcast_end_time_r, offset);
                break;
            case 0x060A:        /* broadcast_service_group */
                if (length)
                    proto_tree_add_item(sub_tree, hf_smpp_broadcast_service_group,
                                        tvb, *offset, length, ENC_NA);
                (*offset) += length;
                break;
            case 0x060B:        /* billing_identification */
                if (length)
                    proto_tree_add_item(sub_tree, hf_smpp_billing_identification,
                                        tvb, *offset, length, ENC_NA);
                (*offset) += length;
                break;
            /* 0x060C is skipped in the specs for some reason :-? */
            case 0x060D:        /* source_network_id */
                if (length)
                    proto_tree_add_item(sub_tree, hf_smpp_source_network_id,
                        tvb, *offset, length, ENC_NA|ENC_ASCII);
                (*offset) += length;
                break;
            case 0x060E:        /* dest_network_id */
                if (length)
                    proto_tree_add_item(sub_tree, hf_smpp_dest_network_id,
                        tvb, *offset, length, ENC_NA | ENC_ASCII);
                (*offset) += length;
                break;
            case 0x060F:        /* source_node_id */
                if (length)
                    proto_tree_add_item(sub_tree, hf_smpp_source_node_id,
                                        tvb, *offset, length, ENC_NA);
                (*offset) += length;
                break;
            case 0x0610:        /* dest_node_id */
                if (length)
                    proto_tree_add_item(sub_tree, hf_smpp_dest_node_id,
                                        tvb, *offset, length, ENC_NA);
                (*offset) += length;
                break;
            case 0x0611:        /* dest_addr_np_resolution */
                proto_tree_add_item(sub_tree, hf_smpp_dest_addr_np_resolution, tvb, *offset, 1, ENC_NA);
                (*offset) += 1;
                break;
            case 0x0612:        /* dest_addr_np_information */
                if (length)
                    proto_tree_add_item(sub_tree, hf_smpp_dest_addr_np_information,
                                        tvb, *offset, length, ENC_NA);
                (*offset) += length;
                break;
            case 0x0613:        /* dest_addr_np_country */
                /* TODO : Fetch values from packet-e164? */
                if (length)
                    proto_tree_add_item(sub_tree, hf_smpp_dest_addr_np_country,
                                        tvb, *offset, length, ENC_NA);
                (*offset) += length;
                break;
            case  0x1201:       /* display_time */
                proto_tree_add_item(sub_tree, hf_smpp_display_time, tvb, *offset, 1, ENC_NA);
                (*offset) += 1;
                break;
            case  0x1203:       /* sms_signal   */
                proto_tree_add_item(sub_tree, hf_smpp_sms_signal, tvb, *offset, 2, ENC_BIG_ENDIAN);
                (*offset) += 2;
                /*! \todo Fill as per TIA/EIA-136-710-A         */
                break;
            case  0x1204:       /* ms_validity  */
                proto_tree_add_item(sub_tree, hf_smpp_ms_validity, tvb, *offset, 1, ENC_NA);
                (*offset) += 1;
                break;
            case  0x130C:       /* alert_on_message_delivery    */
                if (length == 0) {
                        proto_tree_add_item(sub_tree,
                                    hf_smpp_alert_on_message_delivery_null,
                                    tvb, *offset, length, ENC_NA);
                } else {
                    proto_tree_add_item(sub_tree, hf_smpp_alert_on_message_delivery_type, tvb, *offset, 1, ENC_NA);
                    (*offset) += 1;
                }
                break;
            case  0x1380:       /* its_reply_type       */
                proto_tree_add_item(sub_tree, hf_smpp_its_reply_type, tvb, *offset, 1, ENC_NA);
                (*offset) += 1;
                break;
            case  0x1383: {      /* its_session_info     */

                static int * const fields[] = {
                    &hf_smpp_its_session_sequence,
                    &hf_smpp_its_session_ind,
                    NULL
                };

                proto_tree_add_item(sub_tree, hf_smpp_its_session_number, tvb, *offset, 1, ENC_NA);
                (*offset) += 1;
                proto_tree_add_bitmask_list(sub_tree, tvb, *offset, 1, fields, ENC_NA);
                (*offset) += 1;
                }
                break;

            default:
                /* TODO : Hopefully to be implemented soon - handle vendor specific TLVs
                 * from a dictionary before treating them as unknown! */
                if ((tag >= 0x1400) && (tag <= 0x3FFF)) {
                    proto_tree_add_item(sub_tree, hf_smpp_vendor_op, tvb,
                                        *offset, length, ENC_NA);
                } else {
                    proto_tree_add_item(sub_tree, hf_smpp_reserved_op, tvb,
                                        *offset, length, ENC_NA);
                }

                if (length > 0) {
                    char *str;
                    str = tvb_bytes_to_str(NULL, tvb,*offset,length);
                    proto_item_append_text(sub_tree,": %s", str);
                    wmem_free(NULL, str);
                }

                (*offset) += length;
                break;
        }
    }

    if (source_port_found && dest_port_found) {
        smpp_data = get_smpp_data(pinfo);
        if (smpp_data->udh_fields == NULL) {
            smpp_data->udh_fields = wmem_new0(pinfo->pool, gsm_sms_udh_fields_t);
        }
        smpp_data->udh_fields->port_src = source_port;
        smpp_data->udh_fields->port_dst = dest_port;
    }

    if (sm_id_found && frags && frag) {
        /* frags and frag must be at least 1 */
        smpp_data = get_smpp_data(pinfo);
        if (smpp_data->udh_fields == NULL) {
            smpp_data->udh_fields = wmem_new0(pinfo->pool, gsm_sms_udh_fields_t);
        }
        smpp_data->udh_fields->sm_id = sm_id;
        smpp_data->udh_fields->frags = frags;
        smpp_data->udh_fields->frag  = frag;
    }
}

void
smpp_handle_dcs(proto_tree *tree, tvbuff_t *tvb, int *offset, guint *encoding)
{
    guint32     val;
    guint8      dataCoding;
    int         off     = *offset;
    proto_tree *subtree;
    proto_item *pi;

    /* SMPP Data Coding Scheme */
    pi = proto_tree_add_item_ret_uint(tree, hf_smpp_data_coding, tvb, off, 1, ENC_NA, &val);

    if (val & 0xC0) {

        /* GSM SMS Data Coding Scheme */
        subtree = proto_item_add_subtree(pi, ett_dcs);

        if ((val & 0xF0) == 0xF0) {
            static int * const gsm_msg_control_fields[] = {
                &hf_smpp_dcs_sms_coding_group,
                &hf_smpp_dcs_reserved,
                &hf_smpp_dcs_charset,
                &hf_smpp_dcs_class,
                NULL
            };

            proto_tree_add_bitmask_list(subtree, tvb, off, 1, gsm_msg_control_fields, ENC_NA);
            if ((val & 0x04) == 0x04) {
                dataCoding = DECODE_AS_OCTET;
            } else {
                dataCoding = DECODE_AS_GSM7;
            }
        } else {
            static int * const gsm_mwi_control_fields[] = {
                &hf_smpp_dcs_sms_coding_group,
                &hf_smpp_dcs_wait_ind,
                &hf_smpp_dcs_reserved2,
                &hf_smpp_dcs_wait_type,
                NULL
            };

            proto_tree_add_bitmask_list(subtree, tvb, off, 1, gsm_mwi_control_fields, ENC_NA);
            if ((val & 0xF0) == 0xE0) {
                dataCoding = DECODE_AS_UCS2;
            } else {
                dataCoding = DECODE_AS_GSM7;
            }
        }
    } else {
        dataCoding = val;
    }
    if (encoding != NULL) {
        switch (dataCoding)
        {
        case DECODE_AS_DEFAULT:
            *encoding = smpp_decode_dcs_0_sms;
            break;
        case DECODE_AS_ASCII:
            *encoding = ENC_ASCII;
            break;
        case DECODE_AS_OCTET:
            *encoding = DO_NOT_DECODE;
            break;
        case DECODE_AS_ISO_8859_1:
            *encoding = ENC_ISO_8859_1;
            break;
        case DECODE_AS_ISO_8859_5:
            *encoding = ENC_ISO_8859_5;
            break;
        case DECODE_AS_ISO_8859_8:
            *encoding = ENC_ISO_8859_8;
            break;
        case DECODE_AS_UCS2:
            *encoding = ENC_UCS_2|ENC_BIG_ENDIAN;
            break;
        case DECODE_AS_KSC5601:
            *encoding = ENC_EUC_KR;
            break;
        case DECODE_AS_GSM7:
            *encoding = smpp_gsm7_unpacked ? ENC_3GPP_TS_23_038_7BITS_UNPACKED :
                ENC_3GPP_TS_23_038_7BITS_PACKED;
            break;
        default:
            /* XXX: Support decoding unknown values according to the pref? */
            *encoding = DO_NOT_DECODE;
            break;
        }
    }

    (*offset)++;
}

static void
smpp_handle_msg(proto_tree *tree, tvbuff_t *tvb, packet_info *pinfo, const char *src_str, const char *dst_str)
{
    smpp_data_t *smpp_data;
    address      save_src, save_dst;
    guint        encoding;
    int          udh_offset = 0;
    int          length;

    smpp_data = get_smpp_data(pinfo);
    encoding = smpp_data->encoding;

    length = tvb_reported_length(tvb);

    if (smpp_data->udhi) /* UDHI indicator present */
    {
        udh_offset = tvb_get_guint8(tvb, 0) + 1;
    }

    if (smpp_data->udhi || smpp_data->udh_fields) {
        /* Save original addresses */
        copy_address_shallow(&save_src, &pinfo->src);
        copy_address_shallow(&save_dst, &pinfo->dst);
        /* Set SMPP source and destination address */
        set_address(&(pinfo->src), AT_STRINGZ, 1+(int)strlen(src_str), src_str);
        set_address(&(pinfo->dst), AT_STRINGZ, 1+(int)strlen(dst_str), dst_str);
        call_dissector_with_data(gsm_sms_handle, tvb, pinfo, proto_tree_get_parent_tree(tree), smpp_data);
        /* Restore original addresses */
        copy_address_shallow(&pinfo->src, &save_src);
        copy_address_shallow(&pinfo->dst, &save_dst);
    }

    if (smpp_data->encoding != DO_NOT_DECODE) {
        if (smpp_data->encoding == ENC_3GPP_TS_23_038_7BITS_PACKED && smpp_data->udhi) {
            /* SMPP only has the number of octets of the payload, but when
             * packed 7-bit GSM alphabet is used with a UDH, there are fill
             * bits after the UDH to align the SM start with a septet boundary.
             * Calculate the fill bits after the UDH as well as the number of
             * septets that could fit in the bytes. (In certain circumstances
             * there are two possible numbers of septets that would require
             * a certain number of octets. This is part of why packet 7-bit
             * GSM alphabet is not usually used in SMPP, but there are reports
             * of some servers out there.)
             */
            guint8 fill_bits = 6 - ((udh_offset - 1) * 8) % 7;
            int septets = ((length - udh_offset) * 8 - fill_bits) / 7;
            proto_tree_add_ts_23_038_7bits_packed_item(tree, hf_smpp_short_message, tvb, udh_offset * 8 + fill_bits, septets);
        } else {
            proto_tree_add_item(tree, hf_smpp_short_message, tvb,
                    udh_offset, length-udh_offset, encoding);
        }
    }
}

/*!
 * The next set of routines handle the different operations, associated
 * with SMPP.
 */
static void
bind_receiver(proto_tree *tree, tvbuff_t *tvb, int offset)
{
    smpp_handle_string(tree, tvb, hf_smpp_system_id, &offset);
    smpp_handle_string(tree, tvb, hf_smpp_password, &offset);
    smpp_handle_string(tree, tvb, hf_smpp_system_type, &offset);
    proto_tree_add_item(tree, hf_smpp_interface_version, tvb, offset, 1, ENC_NA);
    offset += 1;
    proto_tree_add_item(tree, hf_smpp_addr_ton, tvb, offset, 1, ENC_NA);
    offset += 1;
    proto_tree_add_item(tree, hf_smpp_addr_npi, tvb, offset, 1, ENC_NA);
    offset += 1;
    smpp_handle_string_z(tree, tvb, hf_smpp_address_range, &offset, "NULL");
}

static void
query_sm(proto_tree *tree, tvbuff_t *tvb, int offset)
{
    smpp_handle_string(tree, tvb, hf_smpp_message_id, &offset);
    proto_tree_add_item(tree, hf_smpp_source_addr_ton, tvb, offset, 1, ENC_NA);
    offset += 1;
    proto_tree_add_item(tree, hf_smpp_source_addr_npi, tvb, offset, 1, ENC_NA);
    offset += 1;
    smpp_handle_string(tree, tvb, hf_smpp_source_addr, &offset);
}

static void
outbind(proto_tree *tree, tvbuff_t *tvb, int offset)
{
    smpp_handle_string(tree, tvb, hf_smpp_system_id, &offset);
    smpp_handle_string(tree, tvb, hf_smpp_password, &offset);
}

static void
submit_sm(proto_tree *tree, tvbuff_t *tvb, packet_info *pinfo, int offset)
{
    tvbuff_t    *tvb_msg = NULL;
    smpp_data_t *smpp_data;
    guint32      length;
    const char  *src_str = NULL;
    const char  *dst_str = NULL;
    nstime_t     zero_time = NSTIME_INIT_ZERO;

    smpp_data = get_smpp_data(pinfo);

    smpp_handle_string_z(tree, tvb, hf_smpp_service_type, &offset, "(Default)");
    proto_tree_add_item(tree, hf_smpp_source_addr_ton, tvb, offset, 1, ENC_NA);
    offset += 1;
    proto_tree_add_item(tree, hf_smpp_source_addr_npi, tvb, offset, 1, ENC_NA);
    offset += 1;
    src_str = smpp_handle_string_return(tree, tvb, pinfo, hf_smpp_source_addr, &offset);
    proto_tree_add_item(tree, hf_smpp_dest_addr_ton, tvb, offset, 1, ENC_NA);
    offset += 1;
    proto_tree_add_item(tree, hf_smpp_dest_addr_npi, tvb, offset, 1, ENC_NA);
    offset += 1;
    dst_str = smpp_handle_string_return(tree, tvb, pinfo, hf_smpp_destination_addr, &offset);

    smpp_data->udhi = tvb_get_guint8(tvb, offset) & SMPP_UDHI_MASK;
    proto_tree_add_bitmask_list(tree, tvb, offset, 1, submit_msg_fields, ENC_NA);
    offset++;

    proto_tree_add_item(tree, hf_smpp_protocol_id, tvb, offset, 1, ENC_NA);
    offset += 1;
    proto_tree_add_item(tree, hf_smpp_priority_flag, tvb, offset, 1, ENC_NA);
    offset += 1;
    if (tvb_get_guint8(tvb,offset)) {
        smpp_handle_time(tree, tvb, pinfo, hf_smpp_schedule_delivery_time,
                         hf_smpp_schedule_delivery_time_r, &offset);
    } else { /* Time = NULL means Immediate delivery */
        proto_tree_add_time_format_value(tree, hf_smpp_schedule_delivery_time_r, tvb, offset++, 1, &zero_time, "Immediate delivery");
    }
    if (tvb_get_guint8(tvb,offset)) {
        smpp_handle_time(tree, tvb, pinfo, hf_smpp_validity_period,
                         hf_smpp_validity_period_r, &offset);
    } else { /* Time = NULL means SMSC default validity */
        proto_tree_add_time_format_value(tree, hf_smpp_validity_period_r, tvb, offset++, 1, &zero_time, "SMSC default validity period");
    }

    proto_tree_add_bitmask_list(tree, tvb, offset, 1, regdel_fields, ENC_NA);
    offset++;
    proto_tree_add_item(tree, hf_smpp_replace_if_present_flag, tvb, offset, 1, ENC_NA);
    offset += 1;
    smpp_handle_dcs(tree, tvb, &offset, &smpp_data->encoding);
    proto_tree_add_item(tree, hf_smpp_sm_default_msg_id, tvb, offset, 1, ENC_NA);
    offset += 1;
    proto_tree_add_item_ret_uint(tree, hf_smpp_sm_length, tvb, offset++, 1, ENC_NA, &length);
    if (length)
    {
        proto_tree_add_item(tree, hf_smpp_short_message_bin,
                            tvb, offset, length, ENC_NA);
        tvb_msg = tvb_new_subset_length(tvb, offset, length);
        offset += length;
    }
    /* Get rid of SMPP text string addresses */
    smpp_handle_tlv(tree, tvb, pinfo, &offset, &tvb_msg);

    if (tvb_msg) {
        smpp_handle_msg(tree, tvb_msg, pinfo, src_str, dst_str);
    }
}

static void
replace_sm(proto_tree *tree, tvbuff_t *tvb, packet_info *pinfo, int offset)
{
    tvbuff_t    *tvb_msg = NULL;
    smpp_data_t *smpp_data;
    guint32      length;
    const char  *src_str = NULL;
    nstime_t     zero_time = NSTIME_INIT_ZERO;

    smpp_data = get_smpp_data(pinfo);

    smpp_handle_string(tree, tvb, hf_smpp_message_id, &offset);
    proto_tree_add_item(tree, hf_smpp_source_addr_ton, tvb, offset, 1, ENC_NA);
    offset += 1;
    proto_tree_add_item(tree, hf_smpp_source_addr_npi, tvb, offset, 1, ENC_NA);
    offset += 1;
    src_str = smpp_handle_string_return(tree, tvb, pinfo, hf_smpp_source_addr, &offset);
    if (tvb_get_guint8(tvb,offset)) {
        smpp_handle_time(tree, tvb, pinfo, hf_smpp_schedule_delivery_time,
                                hf_smpp_schedule_delivery_time_r, &offset);
    } else { /* Time = NULL */
        proto_tree_add_time_format_value(tree, hf_smpp_schedule_delivery_time_r, tvb, offset++, 1, &zero_time, "Keep initial delivery time setting");
    }
    if (tvb_get_guint8(tvb,offset)) {
        smpp_handle_time(tree, tvb, pinfo, hf_smpp_validity_period,
                                hf_smpp_validity_period_r, &offset);
    } else { /* Time = NULL */
        proto_tree_add_time_format_value(tree, hf_smpp_validity_period_r, tvb, offset++, 1,&zero_time, "Keep initial validity period setting");
    }
    proto_tree_add_bitmask_list(tree, tvb, offset, 1, regdel_fields, ENC_NA);
    offset++;
    proto_tree_add_item(tree, hf_smpp_sm_default_msg_id, tvb, offset, 1, ENC_NA);
    offset += 1;
    proto_tree_add_item_ret_uint(tree, hf_smpp_sm_length, tvb, offset++, 1, ENC_NA, &length);
    /* XXX: replace_sm does not contain a DCS element, so theoretically
     * the encoding must be the same as the previously submitted message
     * with the same message ID. We don't track that, though, so just assume
     * default.
     */
    smpp_data->encoding = smpp_decode_dcs_0_sms;
    if (length) {
        proto_tree_add_item(tree, hf_smpp_short_message_bin,
                tvb, offset, length, ENC_NA);
        tvb_msg = tvb_new_subset_length(tvb, offset, length);
    }
    offset += length;
    smpp_handle_tlv(tree, tvb, pinfo, &offset, &tvb_msg);
    if (tvb_msg) {
        smpp_handle_msg(tree, tvb_msg, pinfo, src_str, "");
    }
}

static void
cancel_sm(proto_tree *tree, tvbuff_t *tvb, int offset)
{
    smpp_handle_string_z(tree, tvb, hf_smpp_service_type, &offset, "(Default)");
    smpp_handle_string(tree, tvb, hf_smpp_message_id, &offset);
    proto_tree_add_item(tree, hf_smpp_source_addr_ton, tvb, offset, 1, ENC_NA);
    offset += 1;
    proto_tree_add_item(tree, hf_smpp_source_addr_npi, tvb, offset, 1, ENC_NA);
    offset += 1;
    smpp_handle_string(tree, tvb, hf_smpp_source_addr, &offset);
    proto_tree_add_item(tree, hf_smpp_dest_addr_ton, tvb, offset, 1, ENC_NA);
    offset += 1;
    proto_tree_add_item(tree, hf_smpp_dest_addr_npi, tvb, offset, 1, ENC_NA);
    offset += 1;
    smpp_handle_string(tree, tvb, hf_smpp_destination_addr, &offset);
}

static void
submit_multi(proto_tree *tree, tvbuff_t *tvb, packet_info *pinfo, int offset)
{
    tvbuff_t    *tvb_msg = NULL;
    smpp_data_t *smpp_data;
    guint32      length;
    const char  *src_str = NULL;
    nstime_t     zero_time = NSTIME_INIT_ZERO;

    smpp_data = get_smpp_data(pinfo);

    smpp_handle_string_z(tree, tvb, hf_smpp_service_type, &offset, "(Default)");
    proto_tree_add_item(tree, hf_smpp_source_addr_ton, tvb, offset, 1, ENC_NA);
    offset += 1;
    proto_tree_add_item(tree, hf_smpp_source_addr_npi, tvb, offset, 1, ENC_NA);
    offset += 1;
    src_str = smpp_handle_string_return(tree, tvb, pinfo, hf_smpp_source_addr, &offset);

    smpp_handle_dlist(tree, tvb, &offset);

    smpp_data->udhi = tvb_get_guint8(tvb, offset) & SMPP_UDHI_MASK;
    proto_tree_add_bitmask_list(tree, tvb, offset, 1, submit_msg_fields, ENC_NA);
    offset++;
    proto_tree_add_item(tree, hf_smpp_protocol_id, tvb, offset, 1, ENC_NA);
    offset += 1;
    proto_tree_add_item(tree, hf_smpp_priority_flag, tvb, offset, 1, ENC_NA);
    offset += 1;
    if (tvb_get_guint8(tvb,offset)) {
        smpp_handle_time(tree, tvb, pinfo, hf_smpp_schedule_delivery_time,
                hf_smpp_schedule_delivery_time_r, &offset);
    } else { /* Time = NULL means Immediate delivery */
        proto_tree_add_time_format_value(tree, hf_smpp_schedule_delivery_time_r, tvb, offset++, 1, &zero_time, "Immediate delivery");
    }
    if (tvb_get_guint8(tvb,offset)) {
        smpp_handle_time(tree, tvb, pinfo, hf_smpp_validity_period, hf_smpp_validity_period_r, &offset);
    } else { /* Time = NULL means SMSC default validity */
        proto_tree_add_time_format_value(tree, hf_smpp_schedule_delivery_time_r, tvb, offset++, 1, &zero_time, "SMSC default validity period");
    }
    proto_tree_add_bitmask_list(tree, tvb, offset, 1, regdel_fields, ENC_NA);
    offset++;
    proto_tree_add_item(tree, hf_smpp_replace_if_present_flag, tvb, offset, 1, ENC_NA);
    offset += 1;
    smpp_handle_dcs(tree, tvb, &offset, &smpp_data->encoding);
    proto_tree_add_item(tree, hf_smpp_sm_default_msg_id, tvb, offset, 1, ENC_NA);
    offset += 1;
    proto_tree_add_item_ret_uint(tree, hf_smpp_sm_length, tvb, offset++, 1, ENC_NA, &length);
    if (length) {
        proto_tree_add_item(tree, hf_smpp_short_message_bin,
                tvb, offset, length, ENC_NA);
        tvb_msg = tvb_new_subset_length(tvb, offset, length);
    }
    offset += length;
    smpp_handle_tlv(tree, tvb, pinfo, &offset, &tvb_msg);
    if (tvb_msg) {
        /* submit_multi can have many destinations; for reassembly purposes
         * use the null address, like a broadcast.
         */
        smpp_handle_msg(tree, tvb_msg, pinfo, src_str, "");
    }
}

static void
alert_notification(proto_tree *tree, tvbuff_t *tvb, packet_info *pinfo, int offset)
{
    proto_tree_add_item(tree, hf_smpp_source_addr_ton, tvb, offset, 1, ENC_NA);
    offset += 1;
    proto_tree_add_item(tree, hf_smpp_source_addr_npi, tvb, offset, 1, ENC_NA);
    offset += 1;
    smpp_handle_string(tree, tvb, hf_smpp_source_addr, &offset);
    proto_tree_add_item(tree, hf_smpp_esme_addr_ton, tvb, offset, 1, ENC_NA);
    offset += 1;
    proto_tree_add_item(tree, hf_smpp_esme_addr_npi, tvb, offset, 1, ENC_NA);
    offset += 1;
    smpp_handle_string(tree, tvb, hf_smpp_esme_addr, &offset);
    smpp_handle_tlv(tree, tvb, pinfo, &offset, NULL);
}

static void
data_sm(proto_tree *tree, tvbuff_t *tvb, packet_info *pinfo, int offset)
{
    tvbuff_t    *tvb_msg = NULL;
    smpp_data_t *smpp_data;
    const char  *src_str = NULL;
    const char  *dst_str = NULL;

    smpp_data = get_smpp_data(pinfo);

    smpp_handle_string_z(tree, tvb, hf_smpp_service_type, &offset, "(Default)");
    proto_tree_add_item(tree, hf_smpp_source_addr_ton, tvb, offset, 1, ENC_NA);
    offset += 1;
    proto_tree_add_item(tree, hf_smpp_source_addr_npi, tvb, offset, 1, ENC_NA);
    offset += 1;
    src_str = smpp_handle_string_return(tree, tvb, pinfo, hf_smpp_source_addr, &offset);
    proto_tree_add_item(tree, hf_smpp_dest_addr_ton, tvb, offset, 1, ENC_NA);
    offset += 1;
    proto_tree_add_item(tree, hf_smpp_dest_addr_npi, tvb, offset, 1, ENC_NA);
    offset += 1;
    dst_str = smpp_handle_string_return(tree, tvb, pinfo, hf_smpp_destination_addr, &offset);
    smpp_data->udhi = tvb_get_guint8(tvb, offset) & SMPP_UDHI_MASK;
    proto_tree_add_bitmask_list(tree, tvb, offset, 1, submit_msg_fields, ENC_NA);
    offset++;
    proto_tree_add_bitmask_list(tree, tvb, offset, 1, regdel_fields, ENC_NA);
    offset++;
    smpp_handle_dcs(tree, tvb, &offset, &smpp_data->encoding);
    smpp_handle_tlv(tree, tvb, pinfo, &offset, &tvb_msg);
    if (tvb_msg) {
        smpp_handle_msg(tree, tvb_msg, pinfo, src_str, dst_str);
    }
}

/*
 * Request operations introduced in the SMPP 5.0
 */
static void
broadcast_sm(proto_tree *tree, tvbuff_t *tvb, packet_info *pinfo, int offset)
{
    nstime_t     zero_time = NSTIME_INIT_ZERO;
    tvbuff_t    *tvb_msg = NULL;
    smpp_data_t *smpp_data;
    const char  *src_str = NULL;

    smpp_data = get_smpp_data(pinfo);

    smpp_handle_string_z(tree, tvb, hf_smpp_service_type, &offset, "(Default)");
    proto_tree_add_item(tree, hf_smpp_source_addr_ton, tvb, offset, 1, ENC_NA);
    offset += 1;
    proto_tree_add_item(tree, hf_smpp_source_addr_npi, tvb, offset, 1, ENC_NA);
    offset += 1;
    src_str = smpp_handle_string_return(tree, tvb, pinfo, hf_smpp_source_addr, &offset);
    smpp_handle_string(tree, tvb, hf_smpp_message_id, &offset);
    proto_tree_add_item(tree, hf_smpp_priority_flag, tvb, offset, 1, ENC_NA);
    offset += 1;
    if (tvb_get_guint8(tvb,offset)) {
        smpp_handle_time(tree, tvb, pinfo, hf_smpp_schedule_delivery_time,
                hf_smpp_schedule_delivery_time_r, &offset);
    } else { /* Time = NULL means Immediate delivery */
        proto_tree_add_time_format_value(tree, hf_smpp_schedule_delivery_time_r, tvb, offset++, 1, &zero_time, "Immediate delivery");
    }
    if (tvb_get_guint8(tvb,offset)) {
        smpp_handle_time(tree, tvb, pinfo, hf_smpp_validity_period, hf_smpp_validity_period_r, &offset);
    } else { /* Time = NULL means SMSC default validity */
        proto_tree_add_time_format_value(tree, hf_smpp_validity_period_r, tvb, offset++, 1, &zero_time, "SMSC default validity period");
    }
    proto_tree_add_item(tree, hf_smpp_replace_if_present_flag, tvb, offset, 1, ENC_NA);
    offset += 1;
    smpp_handle_dcs(tree, tvb, &offset, &smpp_data->encoding);
    proto_tree_add_item(tree, hf_smpp_sm_default_msg_id, tvb, offset, 1, ENC_NA);
    offset += 1;
    smpp_handle_tlv(tree, tvb, pinfo, &offset, &tvb_msg);
    if (tvb_msg) {
        smpp_handle_msg(tree, tvb_msg, pinfo, src_str, "");
    }
}

static void
query_broadcast_sm(proto_tree *tree, tvbuff_t *tvb, packet_info *pinfo, int offset)
{
    smpp_handle_string(tree, tvb, hf_smpp_message_id, &offset);
    proto_tree_add_item(tree, hf_smpp_source_addr_ton, tvb, offset, 1, ENC_NA);
    offset += 1;
    proto_tree_add_item(tree, hf_smpp_source_addr_npi, tvb, offset, 1, ENC_NA);
    offset += 1;
    smpp_handle_string(tree, tvb, hf_smpp_source_addr, &offset);
    smpp_handle_tlv(tree, tvb, pinfo, &offset, NULL);
}

static void
cancel_broadcast_sm(proto_tree *tree, tvbuff_t *tvb, packet_info *pinfo, int offset)
{
    smpp_handle_string_z(tree, tvb, hf_smpp_service_type, &offset, "(Default)");
    smpp_handle_string(tree, tvb, hf_smpp_message_id, &offset);
    proto_tree_add_item(tree, hf_smpp_source_addr_ton, tvb, offset, 1, ENC_NA);
    offset += 1;
    proto_tree_add_item(tree, hf_smpp_source_addr_npi, tvb, offset, 1, ENC_NA);
    offset += 1;
    smpp_handle_string(tree, tvb, hf_smpp_source_addr, &offset);
    smpp_handle_tlv(tree, tvb, pinfo, &offset, NULL);
}

/*!
 * The next set of routines handle the different operation-responses,
 * associated with SMPP.
 */
static void
bind_receiver_resp(proto_tree *tree, tvbuff_t *tvb, packet_info *pinfo, int offset)
{
    smpp_handle_string(tree, tvb, hf_smpp_system_id, &offset);
    smpp_handle_tlv(tree, tvb, pinfo, &offset, NULL);
}

static void
query_sm_resp(proto_tree *tree, tvbuff_t *tvb, packet_info *pinfo, int offset)
{
    smpp_handle_string(tree, tvb, hf_smpp_message_id, &offset);
    smpp_handle_time(tree, tvb, pinfo, hf_smpp_final_date,
                                hf_smpp_final_date_r, &offset);
    proto_tree_add_item(tree, hf_smpp_message_state, tvb, offset, 1, ENC_NA);
    offset += 1;
    proto_tree_add_item(tree, hf_smpp_error_code, tvb, offset, 1, ENC_NA);
    offset += 1;
}

static void
submit_sm_resp(proto_tree *tree, tvbuff_t *tvb, packet_info *pinfo, int offset)
{
    smpp_handle_string(tree, tvb, hf_smpp_message_id, &offset);
    smpp_handle_tlv(tree, tvb, pinfo, &offset, NULL);
}

static void
submit_multi_resp(proto_tree *tree, tvbuff_t *tvb, packet_info *pinfo, int offset)
{
    smpp_handle_string(tree, tvb, hf_smpp_message_id, &offset);
    smpp_handle_dlist_resp(tree, tvb, &offset);
    smpp_handle_tlv(tree, tvb, pinfo, &offset, NULL);
}

static void
data_sm_resp(proto_tree *tree, tvbuff_t *tvb, packet_info *pinfo, int offset)
{
    smpp_handle_string(tree, tvb, hf_smpp_message_id, &offset);
    smpp_handle_tlv(tree, tvb, pinfo, &offset, NULL);
}

static void
query_broadcast_sm_resp(proto_tree *tree, tvbuff_t *tvb, packet_info *pinfo, int offset)
{
    smpp_handle_string(tree, tvb, hf_smpp_message_id, &offset);
    smpp_handle_tlv(tree, tvb, pinfo, &offset, NULL);
}

/* Huawei SMPP+ extensions */
static void
huawei_auth_acc(proto_tree *tree, tvbuff_t *tvb, int offset)
{
    guint32 version;

    proto_tree_add_item_ret_uint(tree, hf_smpp_error_code, tvb, offset, 1, ENC_NA, &version);
    offset += 1;
    smpp_handle_string(tree, tvb, hf_huawei_smpp_smsc_addr, &offset);
    if ( version == '3' ) {
        proto_tree_add_item(tree, hf_huawei_smpp_msc_addr_noa, tvb, offset, 1, ENC_NA);
        offset += 1;
        proto_tree_add_item(tree, hf_huawei_smpp_msc_addr_npi, tvb, offset, 1, ENC_NA);
        offset += 1;
        smpp_handle_string(tree, tvb, hf_huawei_smpp_msc_addr, &offset);
    }
    smpp_handle_string(tree, tvb, hf_smpp_source_addr, &offset);
    smpp_handle_string(tree, tvb, hf_smpp_destination_addr, &offset);
    proto_tree_add_item(tree, hf_huawei_smpp_mo_mt_flag, tvb, offset, 1, ENC_NA);
    offset += 1;
    smpp_handle_string(tree, tvb, hf_huawei_smpp_sm_id, &offset);
    proto_tree_add_item(tree, hf_huawei_smpp_length_auth, tvb, offset, 4, ENC_BIG_ENDIAN);
    offset += 4;
    proto_tree_add_item(tree, hf_huawei_smpp_service_id, tvb, offset, 4, ENC_BIG_ENDIAN);
}

static void
huawei_auth_acc_resp(proto_tree *tree, tvbuff_t *tvb, int offset)
{
    proto_tree_add_item(tree, hf_huawei_smpp_operation_result, tvb, offset, 4, ENC_BIG_ENDIAN);
    offset += 4;
    proto_tree_add_item(tree, hf_huawei_smpp_notify_mode, tvb, offset, 1, ENC_NA);
}

static void
huawei_sm_result_notify(proto_tree *tree, tvbuff_t *tvb, int offset)
{
    guint32 version;

    proto_tree_add_item_ret_uint(tree, hf_smpp_error_code, tvb, offset, 1, ENC_NA, &version);
    offset += 1;
    smpp_handle_string(tree, tvb, hf_huawei_smpp_smsc_addr, &offset);

    if ( version == '3' ) {
        proto_tree_add_item(tree, hf_huawei_smpp_msc_addr_noa, tvb, offset, 1, ENC_NA);
        offset += 1;
        proto_tree_add_item(tree, hf_huawei_smpp_msc_addr_npi, tvb, offset, 1, ENC_NA);
        offset += 1;
        smpp_handle_string(tree, tvb, hf_huawei_smpp_msc_addr, &offset);
    }

    smpp_handle_string(tree, tvb, hf_smpp_source_addr, &offset);
    smpp_handle_string(tree, tvb, hf_smpp_destination_addr, &offset);
    proto_tree_add_item(tree, hf_huawei_smpp_mo_mt_flag, tvb, offset, 1, ENC_NA);
    offset += 1;
    smpp_handle_string(tree, tvb, hf_huawei_smpp_sm_id, &offset);
    proto_tree_add_item(tree, hf_huawei_smpp_length_auth, tvb, offset, 4, ENC_BIG_ENDIAN);
    offset += 4;
    proto_tree_add_item(tree, hf_huawei_smpp_delivery_result, tvb, offset, 4, ENC_BIG_ENDIAN);
    offset += 4;
    proto_tree_add_item(tree, hf_huawei_smpp_service_id, tvb, offset, 4, ENC_BIG_ENDIAN);
}

static void
huawei_sm_result_notify_resp(proto_tree *tree, tvbuff_t *tvb, int offset)
{
    proto_tree_add_item(tree, hf_huawei_smpp_delivery_result, tvb, offset, 4, ENC_BIG_ENDIAN);
}

static gboolean
test_smpp(packet_info *pinfo _U_, tvbuff_t *tvb, int offset, void *data _U_)
{
    guint32      command_id;            /* SMPP command         */
    guint32      command_status;        /* Status code          */
    guint32      command_length;        /* length of PDU        */

    if (tvb_reported_length_remaining(tvb, offset) < SMPP_MIN_LENGTH ||   /* Mandatory header     */
        tvb_captured_length_remaining(tvb, offset) < 12)
        return FALSE;
    command_length = tvb_get_ntohl(tvb, offset);
    if (command_length > 64 * 1024 || command_length < SMPP_MIN_LENGTH)
        return FALSE;
    command_id = tvb_get_ntohl(tvb, offset + 4);         /* Only known commands  */
    if (try_val_to_str(command_id, vals_command_id) == NULL)
        return FALSE;
    command_status = tvb_get_ntohl(tvb, offset + 8);     /* ..with known status  */
    if (try_rval_to_str(command_status, rvals_command_status) == NULL)
        return FALSE;

    return TRUE;
}

static guint
get_smpp_pdu_len(packet_info *pinfo _U_, tvbuff_t *tvb, int offset, void *data _U_)
{
    return tvb_get_ntohl(tvb, offset);
}

static void
export_smpp_pdu(packet_info *pinfo, tvbuff_t *tvb)
{
    exp_pdu_data_t *exp_pdu_data = export_pdu_create_common_tags(pinfo, "smpp", EXP_PDU_TAG_DISSECTOR_NAME);

    exp_pdu_data->tvb_captured_length = tvb_captured_length(tvb);
    exp_pdu_data->tvb_reported_length = tvb_reported_length(tvb);
    exp_pdu_data->pdu_tvb = tvb;

    tap_queue_packet(exported_pdu_tap, pinfo, exp_pdu_data);
}

/* Dissect a single SMPP PDU contained within "tvb". */
static int
dissect_smpp_pdu(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
{
    int             offset      = 0; /* Offset within tvbuff */
    guint           command_length;  /* length of PDU        */
    guint           command_id;      /* SMPP command         */
    guint           command_status;  /* Status code          */
    guint           sequence_number; /* ...of command        */
    smpp_tap_rec_t *tap_rec;         /* Tap record           */
    const gchar    *command_str;
    const gchar    *command_status_str = NULL;
    /* Set up structures needed to add the protocol subtree and manage it */
    proto_item     *ti;
    proto_tree     *smpp_tree;

    /*
     * Safety: don't even try to dissect the PDU
     * when the mandatory header isn't present.
     */
    if (tvb_reported_length(tvb) < SMPP_MIN_LENGTH)
        return 0;
    command_length = tvb_get_ntohl(tvb, offset);
    offset += 4;
    command_id = tvb_get_ntohl(tvb, offset);
    command_str = val_to_str(command_id, vals_command_id,
            "(Unknown SMPP Operation 0x%08X)");
    offset += 4;
    command_status = tvb_get_ntohl(tvb, offset);
    if (command_id & SMPP_COMMAND_ID_RESPONSE_MASK) {
        /* PDU is a response. */
        command_status_str = rval_to_str(command_status, rvals_command_status, "Unknown (0x%08x)");
    }
    offset += 4;
    sequence_number = tvb_get_ntohl(tvb, offset);

    if (have_tap_listener(exported_pdu_tap)){
        export_smpp_pdu(pinfo,tvb);
    }

    /*
     * Update the protocol column.
     */
    col_set_str(pinfo->cinfo, COL_PROTOCOL, "SMPP");
    col_clear(pinfo->cinfo, COL_INFO);

    /*
     * Create display subtree for the protocol
     */
    ti = proto_tree_add_item (tree, proto_smpp, tvb, 0, tvb_captured_length(tvb), ENC_NA);
    smpp_tree = proto_item_add_subtree (ti, ett_smpp);

    /*
     * Make entries in the Info column on the summary display
     */
    col_append_sep_str(pinfo->cinfo, COL_INFO, ", ", command_str);

    /*
     * Display command status of responses in Info column
     */
    if (command_id & SMPP_COMMAND_ID_RESPONSE_MASK) {
        col_append_fstr(pinfo->cinfo, COL_INFO, ": \"%s\"", command_status_str);
    }

    /*
     * Set the fence before dissecting the PDU because if the PDU is invalid it
     * may throw an exception and the next PDU will clear the info about the
     * current PDU
     */
    col_set_fence(pinfo->cinfo, COL_INFO);

    /*
     * Dissect the PDU
     */

    /*
     * Create display subtree for the PDU
     */
    proto_tree_add_uint(smpp_tree, hf_smpp_command_length, tvb, 0, 4, command_length);
    if (command_id & SMPP_COMMAND_ID_RESPONSE_MASK) {
        ti = proto_tree_add_boolean(smpp_tree, hf_smpp_command_response, tvb, 4, 4, TRUE);
    }
    else {
        ti = proto_tree_add_boolean(smpp_tree, hf_smpp_command_request, tvb, 4, 4, TRUE);
    }
    proto_item_set_generated(ti);
    proto_tree_add_uint(smpp_tree, hf_smpp_command_id, tvb, 4, 4, command_id);
    proto_item_append_text(smpp_tree, ", Command: %s", command_str);

    /*
     * Status is only meaningful with responses
     */
    if (command_id & SMPP_COMMAND_ID_RESPONSE_MASK) {
        proto_tree_add_uint(smpp_tree, hf_smpp_command_status, tvb, 8, 4, command_status);
        proto_item_append_text (smpp_tree, ", Status: \"%s\"", command_status_str);
    }
    proto_tree_add_uint(smpp_tree, hf_smpp_sequence_number, tvb, 12, 4, sequence_number);
    proto_item_append_text(smpp_tree, ", Seq: %u, Len: %u", sequence_number, command_length);

    if (command_length <= tvb_reported_length(tvb))
    {
        if (command_id & SMPP_COMMAND_ID_RESPONSE_MASK)
        {
            switch (command_id & (~SMPP_COMMAND_ID_RESPONSE_MASK)) {
                /*
                    * All of these only have a fixed header
                    */
                case SMPP_COMMAND_ID_GENERIC_NACK:
                case SMPP_COMMAND_ID_UNBIND:
                case SMPP_COMMAND_ID_REPLACE_SM:
                case SMPP_COMMAND_ID_CANCEL_SM:
                case SMPP_COMMAND_ID_ENQUIRE_LINK:
                case SMPP_COMMAND_ID_CANCEL_BROADCAST_SM:
                    break;
                /* FIXME: The body of the response PDUs are only
                    * only dissected if the request was successful.
                    * However, in SMPP 5.0 some responses might
                    * contain body to provide additional information
                    * about the error. This needs to be handled.
                    */
                case SMPP_COMMAND_ID_BIND_RECEIVER:
                case SMPP_COMMAND_ID_BIND_TRANSMITTER:
                case SMPP_COMMAND_ID_BIND_TRANSCEIVER:
                    if (!command_status)
                        bind_receiver_resp(smpp_tree, tvb, pinfo, SMPP_FIXED_HEADER_LENGTH);
                    break;
                case SMPP_COMMAND_ID_QUERY_SM:
                    if (!command_status)
                        query_sm_resp(smpp_tree, tvb, pinfo, SMPP_FIXED_HEADER_LENGTH);
                    break;
                case SMPP_COMMAND_ID_SUBMIT_SM:
                case SMPP_COMMAND_ID_DELIVER_SM:
                case SMPP_COMMAND_ID_BROADCAST_SM:
                    if (!command_status)
                        submit_sm_resp(smpp_tree, tvb, pinfo, SMPP_FIXED_HEADER_LENGTH);
                    break;
                case SMPP_COMMAND_ID_SUBMIT_MULTI:
                    if (!command_status)
                        submit_multi_resp(smpp_tree, tvb, pinfo, SMPP_FIXED_HEADER_LENGTH);
                    break;
                case SMPP_COMMAND_ID_DATA_SM:
                    if (!command_status)
                        data_sm_resp(smpp_tree, tvb, pinfo, SMPP_FIXED_HEADER_LENGTH);
                    break;
                case SMPP_COMMAND_ID_QUERY_BROADCAST_SM:
                    if (!command_status)
                        query_broadcast_sm_resp(smpp_tree, tvb, pinfo, SMPP_FIXED_HEADER_LENGTH);
                    break;
                case SMPP_COMMAND_ID_HUAWEI_AUTH_ACC:
                    if (!command_status)
                        huawei_auth_acc_resp(smpp_tree, tvb, SMPP_FIXED_HEADER_LENGTH);
                    break;
                    case SMPP_COMMAND_ID_HUAWEI_SM_RESULT_NOTIFY:
                    if (!command_status)
                        huawei_sm_result_notify_resp(smpp_tree, tvb, SMPP_FIXED_HEADER_LENGTH);
                    break;
                default:
                    break;
            } /* switch (command_id & 0x7FFFFFFF) */
        }
        else
        {
            switch (command_id) {
                case SMPP_COMMAND_ID_BIND_RECEIVER:
                case SMPP_COMMAND_ID_BIND_TRANSMITTER:
                case SMPP_COMMAND_ID_BIND_TRANSCEIVER:
                    bind_receiver(smpp_tree, tvb, SMPP_FIXED_HEADER_LENGTH);
                    break;
                case SMPP_COMMAND_ID_QUERY_SM:
                    query_sm(smpp_tree, tvb, SMPP_FIXED_HEADER_LENGTH);
                    break;
                case SMPP_COMMAND_ID_SUBMIT_SM:
                case SMPP_COMMAND_ID_DELIVER_SM:
                    submit_sm(smpp_tree, tvb, pinfo, SMPP_FIXED_HEADER_LENGTH);
                    break;
                case SMPP_COMMAND_ID_UNBIND:
                case SMPP_COMMAND_ID_ENQUIRE_LINK:
                    break;
                case SMPP_COMMAND_ID_REPLACE_SM:
                    replace_sm(smpp_tree, tvb, pinfo, SMPP_FIXED_HEADER_LENGTH);
                    break;
                case SMPP_COMMAND_ID_CANCEL_SM:
                    cancel_sm(smpp_tree, tvb, SMPP_FIXED_HEADER_LENGTH);
                    break;
                case SMPP_COMMAND_ID_OUTBIND:
                    outbind(smpp_tree, tvb, SMPP_FIXED_HEADER_LENGTH);
                    break;
                case SMPP_COMMAND_ID_SUBMIT_MULTI:
                    submit_multi(smpp_tree, tvb, pinfo, SMPP_FIXED_HEADER_LENGTH);
                    break;
                case SMPP_COMMAND_ID_ALERT_NOTIFICATION:
                    alert_notification(smpp_tree, tvb, pinfo, SMPP_FIXED_HEADER_LENGTH);
                    break;
                case SMPP_COMMAND_ID_DATA_SM:
                    data_sm(smpp_tree, tvb, pinfo, SMPP_FIXED_HEADER_LENGTH);
                    break;
                case SMPP_COMMAND_ID_BROADCAST_SM:
                    broadcast_sm(smpp_tree, tvb, pinfo, SMPP_FIXED_HEADER_LENGTH);
                    break;
                case SMPP_COMMAND_ID_QUERY_BROADCAST_SM:
                    query_broadcast_sm(smpp_tree, tvb, pinfo, SMPP_FIXED_HEADER_LENGTH);
                    break;
                case SMPP_COMMAND_ID_CANCEL_BROADCAST_SM:
                    cancel_broadcast_sm(smpp_tree, tvb, pinfo, SMPP_FIXED_HEADER_LENGTH);
                    break;
                case SMPP_COMMAND_ID_HUAWEI_AUTH_ACC:
                    huawei_auth_acc(smpp_tree, tvb, SMPP_FIXED_HEADER_LENGTH);
                    break;
                case SMPP_COMMAND_ID_HUAWEI_SM_RESULT_NOTIFY:
                    huawei_sm_result_notify(smpp_tree, tvb, SMPP_FIXED_HEADER_LENGTH);
                    break;
                default:
                    break;
            } /* switch (command_id) */
        }

    }

    /* Queue packet for Tap */
    tap_rec = wmem_new0(pinfo->pool, smpp_tap_rec_t);
    tap_rec->command_id = command_id;
    tap_rec->command_status = command_status;
    tap_queue_packet(smpp_tap, pinfo, tap_rec);

    return tvb_captured_length(tvb);
}

static int
dissect_smpp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data)
{
    if (pinfo->ptype == PT_TCP) {       /* are we running on top of TCP */
        if (!test_smpp(pinfo, tvb, 0, data)) {
            return 0;
        }
        tcp_dissect_pdus(tvb, pinfo, tree,
            reassemble_over_tcp,    /* Do we try to reassemble      */
            SMPP_FIXED_HEADER_LENGTH, /* Length of fixed header       */
            /* XXX: We only use the first 4 bytes for the length, do we
             * really need to pass in the entire fixed header? */
            get_smpp_pdu_len,       /* Function returning PDU len   */
            dissect_smpp_pdu, data);      /* PDU dissector                */
    }
    else {                            /* no? probably X.25            */
        guint32 offset = 0;
        while (tvb_reported_length_remaining(tvb, offset) > 0) {
            guint16 pdu_len = tvb_get_ntohl(tvb, offset);
            gint pdu_real_len = tvb_captured_length_remaining(tvb, offset);
            tvbuff_t *pdu_tvb;

            if (pdu_len < 1)
                return offset;

            if (pdu_real_len <= 0)
                return offset;
            if (pdu_real_len > pdu_len)
                pdu_real_len = pdu_len;
            pdu_tvb = tvb_new_subset_length_caplen(tvb, offset, pdu_real_len, pdu_len);
            dissect_smpp_pdu(pdu_tvb, pinfo, tree, data);
            offset += pdu_len;
        }
    }

    return tvb_captured_length(tvb);
}

/*
* A 'heuristic dissector' that attemtps to establish whether we have
* a genuine SMPP PDU here.
* Only works when:
*      at least the fixed header is there
*      it has a correct overall PDU length
*      it is a 'well-known' operation
*      has a 'well-known' or 'reserved' status
*/
static gboolean
dissect_smpp_heur(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data)
{
    guint32      command_id;            /* SMPP command         */

    conversation_t* conversation;

    if (!test_smpp(pinfo, tvb, 0, data)) {
        return FALSE;
    }

    // Test a few extra bytes in the heuristic dissector, past the
    // minimum fixed header length, to reduce false positives.

    command_id = tvb_get_ntohl(tvb, 4);
    //Check for specific values in commands (to avoid false positives)
    switch (command_id)
    {
    case SMPP_COMMAND_ID_ALERT_NOTIFICATION:
    {
        guint8 ton, npi;

        if (tvb_reported_length(tvb) < 19)
            return FALSE;
        ton = tvb_get_guint8(tvb, 16);
        if (try_val_to_str(ton, vals_addr_ton) == NULL)
            return FALSE;

        npi = tvb_get_guint8(tvb, 17);
        if (try_val_to_str(npi, vals_addr_npi) == NULL)
            return FALSE;

        //address must be NULL-terminated string of up to 65 ascii characters
        int end = tvb_find_guint8(tvb, 18, -1, 0);
        if ((end <= 0) || (end > 65))
            return FALSE;

        if (!tvb_ascii_isprint(tvb, 18, end - 18))
            return FALSE;
    }
    break;
    }

    /* This is called on TCP or X.25, both of which are endpoint types.
     * Set the conversation so we can handle TCP segmentation. */
    conversation = find_or_create_conversation(pinfo);
    conversation_set_dissector(conversation, smpp_handle);

    dissect_smpp(tvb, pinfo, tree, data);
    return TRUE;
}

static void
smpp_fmt_version(gchar *result, guint32 revision)
{
    snprintf(result, ITEM_LABEL_LENGTH, "%u.%u", (guint8)((revision & 0xF0) >> 4), (guint8)(revision & 0x0F));
}

/* Register the protocol with Wireshark */
void
proto_register_smpp(void)
{
    module_t *smpp_module; /* Preferences for SMPP */
    expert_module_t *expert_smpp;

    /* Setup list of header fields      */
    static hf_register_info hf[] = {
        {   &hf_smpp_command_length,
            {   "Length", "smpp.command_length",
                FT_UINT32, BASE_DEC, NULL, 0x00,
                "Total length of the SMPP PDU.",
                HFILL
            }
        },
        {   &hf_smpp_command_id,
            {   "Operation", "smpp.command_id",
                FT_UINT32, BASE_HEX, VALS(vals_command_id), 0x00,
                "Defines the SMPP PDU.",
                HFILL
            }
        },
        {   &hf_smpp_command_request,
            {   "Request", "smpp.request",
                FT_BOOLEAN, BASE_NONE, NULL, 0x00,
                "TRUE if this is a SMPP request.",
                HFILL
            }
        },
        {   &hf_smpp_command_response,
            {   "Response", "smpp.response",
                FT_BOOLEAN, BASE_NONE, NULL, 0x00,
                "TRUE if this is a SMPP response.",
                HFILL
            }
        },
        {   &hf_smpp_command_status,
            {   "Result", "smpp.command_status",
                FT_UINT32, BASE_HEX | BASE_RANGE_STRING, RVALS(rvals_command_status), 0x00,
                "Indicates success or failure of the SMPP request.",
                HFILL
            }
        },
        {   &hf_smpp_sequence_number,
            {   "Sequence #", "smpp.sequence_number",
                FT_UINT32, BASE_DEC, NULL, 0x00,
                "A number to correlate requests with responses.",
                HFILL
            }
        },
        {   &hf_smpp_system_id,
            {   "System ID", "smpp.system_id",
                FT_STRING, BASE_NONE, NULL, 0x00,
                "Identifies a system.",
                HFILL
            }
        },
        {   &hf_smpp_password,
            {   "Password", "smpp.password",
                FT_STRING, BASE_NONE, NULL, 0x00,
                "Password used for authentication.",
                HFILL
            }
        },
        {   &hf_smpp_system_type,
            {   "System type", "smpp.system_type",
                FT_STRING, BASE_NONE, NULL, 0x00,
                "Categorizes the system.",
                HFILL
            }
        },
        {   &hf_smpp_interface_version,
            {   "Version (if)", "smpp.interface_version",
                FT_UINT8, BASE_CUSTOM, CF_FUNC(smpp_fmt_version), 0x00,
                "Version of SMPP interface supported.",
                HFILL
            }
        },
        {   &hf_smpp_service_type,
            {   "Service type", "smpp.service_type",
                FT_STRING, BASE_NONE, NULL, 0x00,
                "SMS application service associated with the message.",
                HFILL
            }
        },
        {   &hf_smpp_addr_ton,
            {   "Type of number", "smpp.addr_ton",
                FT_UINT8, BASE_HEX, VALS(vals_addr_ton), 0x00,
                "Indicates the type of number, given in the address.",
                HFILL
            }
        },
        {   &hf_smpp_source_addr_ton,
            {   "Type of number (originator)", "smpp.source_addr_ton",
                FT_UINT8, BASE_HEX, VALS(vals_addr_ton), 0x00,
                "Indicates originator type of number, given in the address.",
                HFILL
            }
        },
        {   &hf_smpp_dest_addr_ton,
            {   "Type of number (recipient)", "smpp.dest_addr_ton",
                FT_UINT8, BASE_HEX, VALS(vals_addr_ton), 0x00,
                "Indicates recipient type of number, given in the address.",
                HFILL
            }
        },
        {   &hf_smpp_addr_npi,
            {   "Numbering plan indicator", "smpp.addr_npi",
                FT_UINT8, BASE_HEX, VALS(vals_addr_npi), 0x00,
                "Gives the numbering plan this address belongs to.",
                HFILL
            }
        },
        {   &hf_smpp_source_addr_npi,
            {   "Numbering plan indicator (originator)", "smpp.source_addr_npi",
                FT_UINT8, BASE_HEX, VALS(vals_addr_npi), 0x00,
                "Gives originator numbering plan this address belongs to.",
                HFILL
            }
        },
        {   &hf_smpp_dest_addr_npi,
            {   "Numbering plan indicator (recipient)", "smpp.dest_addr_npi",
                FT_UINT8, BASE_HEX, VALS(vals_addr_npi), 0x00,
                "Gives recipient numbering plan this address belongs to.",
                HFILL
            }
        },
        {   &hf_smpp_address_range,
            {   "Address", "smpp.address_range",
                FT_STRING, BASE_NONE, NULL, 0x00,
                "Given address or address range.",
                HFILL
            }
        },
        {   &hf_smpp_source_addr,
            {   "Originator address", "smpp.source_addr",
                FT_STRING, BASE_NONE, NULL, 0x00,
                "Address of SME originating this message.",
                HFILL
            }
        },
        {   &hf_smpp_destination_addr,
            {   "Recipient address", "smpp.destination_addr",
                FT_STRING, BASE_NONE, NULL, 0x00,
                "Address of SME receiving this message.",
                HFILL
            }
        },
        {   &hf_smpp_esm_submit_msg_mode,
            {   "Messaging mode", "smpp.esm.submit.msg_mode",
                FT_UINT8, BASE_HEX, VALS(vals_esm_submit_msg_mode), 0x03,
                "Mode attribute for this message.",
                HFILL
            }
        },
        {   &hf_smpp_esm_submit_msg_type,
            {   "Message type", "smpp.esm.submit.msg_type",
                FT_UINT8, BASE_HEX, VALS(vals_esm_submit_msg_type), 0x3C,
                "Type attribute for this message.",
                HFILL
            }
        },
        {   &hf_smpp_esm_submit_features,
            {   "GSM features", "smpp.esm.submit.features",
                FT_UINT8, BASE_HEX, VALS(vals_esm_submit_features), 0xC0,
                "GSM network specific features.",
                HFILL
            }
        },
        /*! \todo Get proper values from GSM-spec.      */
        {   &hf_smpp_protocol_id,
            {   "Protocol id.", "smpp.protocol_id",
                FT_UINT8, BASE_HEX, NULL, 0x00,
                "Protocol identifier according GSM 03.40.",
                HFILL
            }
        },
        {   &hf_smpp_priority_flag,
            {   "Priority level", "smpp.priority_flag",
                FT_UINT8, BASE_HEX, VALS(vals_priority_flag), 0x00,
                "The priority level of the short message.",
                HFILL
            }
        },
        {   &hf_smpp_schedule_delivery_time,
            {   "Scheduled delivery time", "smpp.schedule_delivery_time",
                FT_ABSOLUTE_TIME, ABSOLUTE_TIME_UTC, NULL, 0x00,
                "Scheduled time for delivery of short message.",
                HFILL
            }
        },
        {   &hf_smpp_schedule_delivery_time_r,
            {   "Scheduled delivery time", "smpp.schedule_delivery_time_r",
                FT_RELATIVE_TIME, BASE_NONE, NULL, 0x00,
                "Scheduled time for delivery of short message.",
                HFILL
            }
        },
        {   &hf_smpp_validity_period,
            {   "Validity period", "smpp.validity_period",
                FT_ABSOLUTE_TIME, ABSOLUTE_TIME_UTC, NULL, 0x00,
                "Validity period of this message.",
                HFILL
            }
        },
        {   &hf_smpp_validity_period_r,
            {   "Validity period", "smpp.validity_period_r",
                FT_RELATIVE_TIME, BASE_NONE, NULL, 0x00,
                "Validity period of this message.",
                HFILL
            }
        },
        {   &hf_smpp_regdel_receipt,
            {   "Delivery receipt", "smpp.regdel.receipt",
                FT_UINT8, BASE_HEX, VALS(vals_regdel_receipt), 0x03,
                "SMSC delivery receipt request.",
                HFILL
            }
        },
        {   &hf_smpp_regdel_acks,
            {   "Message type", "smpp.regdel.acks",
                FT_UINT8, BASE_HEX, VALS(vals_regdel_acks), 0x0C,
                "SME acknowledgement request.",
                HFILL
            }
        },
        {   &hf_smpp_regdel_notif,
            {   "Intermediate notif", "smpp.regdel.notif",
                FT_UINT8, BASE_HEX, VALS(vals_regdel_notif), 0x10,
                "Intermediate notification request.",
                HFILL
            }
        },
        {   &hf_smpp_replace_if_present_flag,
            {   "Replace", "smpp.replace_if_present_flag",
                FT_UINT8, BASE_HEX, VALS(vals_replace_if_present_flag), 0x01,
                "Replace the short message with this one or not.",
                HFILL
            }
        },
        {   &hf_smpp_data_coding,
            {   "Data coding", "smpp.data_coding",
                FT_UINT8, BASE_HEX|BASE_RANGE_STRING, RVALS(rvals_data_coding), 0x00,
                "Defines the encoding scheme of the message.",
                HFILL
            }
        },
        {   &hf_smpp_sm_default_msg_id,
            {   "Predefined message", "smpp.sm_default_msg_id",
                FT_UINT8, BASE_DEC, NULL, 0x00,
                "Index of a predefined ('canned') short message.",
                HFILL
            }
        },
        {   &hf_smpp_sm_length,
            {   "Message length", "smpp.sm_length",
                FT_UINT8, BASE_DEC, NULL, 0x00,
                "Length of the message content.",
                HFILL
            }
        },
        {   &hf_smpp_short_message,
            {   "Message", "smpp.message_text",
                FT_STRING, BASE_NONE, NULL, 0x00,
                "The actual message or data.",
                HFILL
            }
        },
        {   &hf_smpp_short_message_bin,
            {   "Message bytes", "smpp.message",
                FT_BYTES, BASE_NONE, NULL, 0x00,
                "The actual message bytes.",
                HFILL
            }
        },
        {   &hf_smpp_message_id,
            {   "Message id.", "smpp.message_id",
                FT_STRING, BASE_NONE, NULL, 0x00,
                "Identifier of the submitted short message.",
                HFILL
            }
        },
        {   &hf_smpp_dlist,
            {   "Destination list", "smpp.dlist",
                FT_NONE, BASE_NONE, NULL, 0x00,
                "The list of destinations for a short message.",
                HFILL
            }
        },
        {   &hf_smpp_dlist_resp,
            {   "Unsuccessful delivery list", "smpp.dlist_resp",
                FT_NONE, BASE_NONE, NULL, 0x00,
                "The list of unsuccessful deliveries to destinations.",
                HFILL
            }
        },
        {   &hf_smpp_dl_name,
            {   "Distr. list name", "smpp.dl_name",
                FT_STRING, BASE_NONE, NULL, 0x00,
                "The name of the distribution list.",
                HFILL
            }
        },
        {   &hf_smpp_final_date,
            {   "Final date", "smpp.final_date",
                FT_ABSOLUTE_TIME, ABSOLUTE_TIME_UTC, NULL, 0x00,
                "Date-time when the queried message reached a final state.",
                HFILL
            }
        },
        {   &hf_smpp_final_date_r,
            {   "Final date", "smpp.final_date_r",
                FT_RELATIVE_TIME, BASE_NONE, NULL, 0x00,
                "Date-time when the queried message reached a final state.",
                HFILL
            }
        },
        {   &hf_smpp_message_state,
            {   "Message state", "smpp.message_state",
                FT_UINT8, BASE_DEC, VALS(vals_message_state), 0x00,
                "Specifies the status of the queried short message.",
                HFILL
            }
        },
        {   &hf_smpp_error_code,
            {   "Error code", "smpp.error_code",
                FT_UINT8, BASE_DEC, NULL, 0x00,
                "Network specific error code defining reason for failure.",
                HFILL
            }
        },
        {   &hf_smpp_error_status_code,
            {   "Status", "smpp.error_status_code",
                FT_UINT32, BASE_HEX | BASE_RANGE_STRING, RVALS(rvals_command_status), 0x00,
                "Indicates success/failure of request for this address.",
                HFILL
            }
        },
        {   &hf_smpp_esme_addr_ton,
            {   "Type of number (ESME)", "smpp.esme_addr_ton",
                FT_UINT8, BASE_HEX, VALS(vals_addr_ton), 0x00,
                "Indicates recipient type of number, given in the address.",
                HFILL
            }
        },
        {   &hf_smpp_esme_addr_npi,
            {   "Numbering plan indicator (ESME)", "smpp.esme_addr_npi",
                FT_UINT8, BASE_HEX, VALS(vals_addr_npi), 0x00,
                "Gives the numbering plan this address belongs to.",
                HFILL
            }
        },
        {   &hf_smpp_esme_addr,
            {   "ESME address", "smpp.esme_addr",
                FT_STRING, BASE_NONE, NULL, 0x00,
                "Address of ESME originating this message.",
                HFILL
            }
        },
        {   &hf_smpp_dest_addr_subunit,
            {   "Subunit destination", "smpp.dest_addr_subunit",
                FT_UINT8, BASE_HEX, VALS(vals_addr_subunit), 0x00,
                "Subunit address within mobile to route message to.",
                HFILL
            }
        },
        {   &hf_smpp_source_addr_subunit,
            {   "Subunit origin", "smpp.source_addr_subunit",
                FT_UINT8, BASE_HEX, VALS(vals_addr_subunit), 0x00,
                "Subunit address within mobile that generated the message.",
                HFILL
            }
        },
        {   &hf_smpp_dest_network_type,
            {   "Destination network", "smpp.dest_network_type",
                FT_UINT8, BASE_HEX, VALS(vals_network_type), 0x00,
                "Network associated with the destination address.",
                HFILL
            }
        },
        {   &hf_smpp_source_network_type,
            {   "Originator network", "smpp.source_network_type",
                FT_UINT8, BASE_HEX, VALS(vals_network_type), 0x00,
                "Network associated with the originator address.",
                HFILL
            }
        },
        {   &hf_smpp_dest_bearer_type,
            {   "Destination bearer", "smpp.dest_bearer_type",
                FT_UINT8, BASE_HEX, VALS(vals_bearer_type), 0x00,
                "Desired bearer for delivery of message.",
                HFILL
            }
        },
        {   &hf_smpp_source_bearer_type,
            {   "Originator bearer", "smpp.source_bearer_type",
                FT_UINT8, BASE_HEX, VALS(vals_bearer_type), 0x00,
                "Bearer over which the message originated.",
                HFILL
            }
        },
        {   &hf_smpp_dest_telematics_id,
            {   "Telematic interworking (dest)", "smpp.dest_telematics_id",
                FT_UINT16, BASE_HEX, NULL, 0x00,
                "Telematic interworking to be used for message delivery.",
                HFILL
            }
        },
        {   &hf_smpp_source_telematics_id,
            {   "Telematic interworking (orig)", "smpp.source_telematics_id",
                FT_UINT8, BASE_HEX, NULL, 0x00,
                "Telematic interworking used for message submission.",
                HFILL
            }
        },
        {   &hf_smpp_qos_time_to_live,
            {   "Validity period", "smpp.qos_time_to_live",
                FT_UINT32, BASE_DEC, NULL, 0x00,
                "Number of seconds to retain message before expiry.",
                HFILL
            }
        },
        {   &hf_smpp_payload_type,
            {   "Payload", "smpp.payload_type",
                FT_UINT8, BASE_DEC, VALS(vals_payload_type), 0x00,
                "PDU type contained in the message payload.",
                HFILL
            }
        },
        {   &hf_smpp_additional_status_info_text,
            {   "Information", "smpp.additional_status_info_text",
                FT_STRING, BASE_NONE, NULL, 0x00,
                "Description of the meaning of a response PDU.",
                HFILL
            }
        },
        {   &hf_smpp_receipted_message_id,
            {   "SMSC identifier", "smpp.receipted_message_id",
                FT_STRING, BASE_NONE, NULL, 0x00,
                "SMSC handle of the message being received.",
                HFILL
            }
        },
        {   &hf_smpp_privacy_indicator,
            {   "Privacy indicator", "smpp.privacy_indicator",
                FT_UINT8, BASE_DEC, VALS(vals_privacy_indicator), 0x00,
                "Indicates the privacy level of the message.",
                HFILL
            }
        },
    {   &hf_smpp_source_subaddress,
            {   "Source Subaddress", "smpp.source_subaddress",
                FT_BYTES, BASE_NONE, NULL, 0x00,
                NULL,
                HFILL
            }
        },
    {   &hf_smpp_dest_subaddress,
            {   "Destination Subaddress", "smpp.dest_subaddress",
                FT_BYTES, BASE_NONE, NULL, 0x00,
                NULL,
                HFILL
            }
        },
    {   &hf_smpp_user_message_reference,
            {   "Message reference", "smpp.user_message_reference",
                FT_UINT16, BASE_HEX, NULL, 0x00,
                "Reference to the message, assigned by the user.",
                HFILL
            }
        },
        {   &hf_smpp_user_response_code,
            {   "Application response code", "smpp.user_response_code",
                FT_UINT8, BASE_HEX, NULL, 0x00,
                "A response code set by the user.",
                HFILL
            }
        },
        {   &hf_smpp_language_indicator,
            {   "Language", "smpp.language_indicator",
                FT_UINT8, BASE_DEC, VALS(vals_language_indicator), 0x00,
                "Indicates the language of the short message.",
                HFILL
            }
        },
        {   &hf_smpp_source_port,
            {   "Source port", "smpp.source_port",
                FT_UINT16, BASE_HEX, NULL, 0x00,
                "Application port associated with the source of the message.",
                HFILL
            }
        },
        {   &hf_smpp_destination_port,
            {   "Destination port", "smpp.destination_port",
                FT_UINT16, BASE_HEX, NULL, 0x00,
                "Application port associated with the destination of the message.",
                HFILL
            }
        },
        {   &hf_smpp_sar_msg_ref_num,
            {   "SAR reference number", "smpp.sar_msg_ref_num",
                FT_UINT16, BASE_DEC, NULL, 0x00,
                "Reference number for a concatenated short message.",
                HFILL
            }
        },
        {   &hf_smpp_sar_total_segments,
            {   "SAR size", "smpp.sar_total_segments",
                FT_UINT16, BASE_DEC, NULL, 0x00,
                "Number of segments of a concatenated short message.",
                HFILL
            }
        },
        {   &hf_smpp_sar_segment_seqnum,
            {   "SAR sequence number", "smpp.sar_segment_seqnum",
                FT_UINT8, BASE_DEC, NULL, 0x00,
                "Segment number within a concatenated short message.",
                HFILL
            }
        },
        {   &hf_smpp_display_time,
            {   "Display time", "smpp.display_time",
                FT_UINT8, BASE_DEC, VALS(vals_display_time), 0x00,
                "Associates a display time with the message on the handset.",
                HFILL
            }
        },
        {   &hf_smpp_sms_signal,
            {   "SMS signal", "smpp.sms_signal",
                FT_UINT16, BASE_HEX, NULL, 0x00,
                "Alert the user according to the information contained within this information element.",
                HFILL
            }
        },
        {   &hf_smpp_ms_validity,
            {   "Validity info", "smpp.ms_validity",
                FT_UINT8, BASE_DEC, VALS(vals_ms_validity), 0x00,
                "Associates validity info with the message on the handset.",
                HFILL
            }
        },
        {   &hf_smpp_dpf_result,
            {   "Delivery pending set?", "smpp.dpf_result",
                FT_UINT8, BASE_DEC, VALS(vals_dpf_result), 0x00,
                "Indicates whether Delivery Pending Flag was set.",
                HFILL
            }
        },
        {   &hf_smpp_set_dpf,
            {   "Request DPF set", "smpp.set_dpf",
                FT_UINT8, BASE_DEC, VALS(vals_set_dpf), 0x00,
                "Request to set the DPF for certain failure scenario's.",
                HFILL
            }
        },
        {   &hf_smpp_ms_availability_status,
            {   "Availability status", "smpp.ms_availability_status",
                FT_UINT8, BASE_DEC, VALS(vals_ms_availability_status), 0x00,
                "Indicates the availability state of the handset.",
                HFILL
            }
        },
        {   &hf_smpp_delivery_failure_reason,
            {   "Delivery failure reason", "smpp.delivery_failure_reason",
                FT_UINT8, BASE_DEC, VALS(vals_delivery_failure_reason), 0x00,
                "Indicates the reason for a failed delivery attempt.",
                HFILL
            }
        },
        {   &hf_smpp_more_messages_to_send,
            {   "More messages?", "smpp.more_messages_to_send",
                FT_UINT8, BASE_DEC, VALS(vals_more_messages_to_send), 0x00,
                "Indicates more messages pending for the same destination.",
                HFILL
            }
        },
        {   &hf_smpp_number_of_messages,
            {   "Number of messages", "smpp.number_of_messages",
                FT_UINT8, BASE_DEC, NULL, 0x00,
                "Indicates number of messages stored in a mailbox.",
                HFILL
            }
        },
        {   &hf_smpp_its_reply_type,
            {   "Reply method", "smpp.its_reply_type",
                FT_UINT8, BASE_DEC, VALS(vals_its_reply_type), 0x00,
                "Indicates the handset reply method on message receipt.",
                HFILL
            }
        },
        {   &hf_smpp_ussd_service_op,
            {   "USSD service operation", "smpp.ussd_service_op",
                FT_UINT8, BASE_DEC, VALS(vals_ussd_service_op), 0x00,
                "Indicates the USSD service operation.",
                HFILL
            }
        },
        {   &hf_smpp_vendor_op,
            {   "Value", "smpp.vendor_op",
                FT_BYTES, BASE_NONE|BASE_ALLOW_ZERO, NULL, 0x00,
                "A supplied optional parameter specific to an SMSC-vendor.",
                HFILL
            }
        },
        {   &hf_smpp_reserved_op,
            {   "Value", "smpp.reserved_op",
                FT_BYTES, BASE_NONE|BASE_ALLOW_ZERO, NULL, 0x00,
                "An optional parameter that is reserved in this version.",
                HFILL
            }
        },
        {   &hf_smpp_msg_wait_ind,
            {   "Indication", "smpp.msg_wait.ind",
                FT_UINT8, BASE_HEX, VALS(vals_msg_wait_ind), 0x80,
                "Indicates to the handset that a message is waiting.",
                HFILL
            }
        },
        {   &hf_smpp_msg_wait_type,
            {   "Type", "smpp.msg_wait.type",
                FT_UINT8, BASE_HEX, VALS(vals_msg_wait_type), 0x03,
                "Indicates type of message that is waiting.",
                HFILL
            }
        },
        {   &hf_smpp_SC_interface_version,
            {   "SMSC-supported version", "smpp.SC_interface_version",
                FT_UINT8, BASE_CUSTOM, CF_FUNC(smpp_fmt_version), 0x00,
                "Version of SMPP interface supported by the SMSC.",
                HFILL
            }
        },
        {   &hf_smpp_callback_num_pres,
            {   "Presentation", "smpp.callback_num.pres",
                FT_UINT8, BASE_HEX, VALS(vals_callback_num_pres), 0x0C,
                "Controls the presentation indication.",
                HFILL
            }
        },
        {   &hf_smpp_callback_num_scrn,
            {   "Screening", "smpp.callback_num.scrn",
                FT_UINT8, BASE_HEX, VALS(vals_callback_num_scrn), 0x03,
                "Controls screening of the callback-number.",
                HFILL
            }
        },
        {   &hf_smpp_callback_num_atag,
            {   "Callback number - alphanumeric display tag",
                "smpp.callback_num_atag",
                FT_NONE, BASE_NONE, NULL, 0x00,
                "Associates an alphanumeric display with call back number.",
                HFILL
            }
        },
        {   &hf_smpp_callback_num,
            {   "Callback number", "smpp.callback_num",
                FT_NONE, BASE_NONE, NULL, 0x00,
                "Associates a call back number with the message.",
                HFILL
            }
        },
        {   &hf_smpp_network_error_type,
            {   "Error type", "smpp.network_error.type",
                FT_UINT8, BASE_DEC, VALS(vals_network_error_type), 0x00,
                "Indicates the network type.",
                HFILL
            }
        },
        {   &hf_smpp_network_error_code,
            {   "Error code", "smpp.network_error.code",
                FT_UINT16, BASE_HEX, NULL, 0x00,
                "Gives the actual network error code.",
                HFILL
            }
        },
        {   &hf_smpp_message_payload,
            {   "Payload", "smpp.message_payload",
                FT_BYTES, BASE_NONE, NULL, 0x00,
                "Short message user data.",
                HFILL
            }
        },
        {   &hf_smpp_alert_on_message_delivery_null,
            {   "Alert on delivery", "smpp.alert_on_message_delivery_null",
                FT_NONE, BASE_NONE, NULL, 0x00,
                "Instructs the handset to alert user on message delivery.",
                HFILL
            }
        },
        {   &hf_smpp_alert_on_message_delivery_type,
            {   "Alert on delivery", "smpp.alert_on_message_delivery_type",
                FT_UINT8, BASE_DEC, VALS(vals_alert_on_message_delivery), 0x00,
                "Instructs the handset to alert user on message delivery.",
                HFILL
            }
        },
        {   &hf_smpp_its_session_number,
            {   "Session number", "smpp.its_session.number",
                FT_UINT8, BASE_DEC, NULL, 0x00,
                "Session number of interactive teleservice.",
                HFILL
            }
        },
        {   &hf_smpp_its_session_sequence,
            {   "Sequence number", "smpp.its_session.sequence",
                FT_UINT8, BASE_HEX, NULL, 0xFE,
                "Sequence number of the dialogue unit.",
                HFILL
            }
        },
        {   &hf_smpp_its_session_ind,
            {   "Session indicator", "smpp.its_session.ind",
                FT_UINT8, BASE_HEX, VALS(vals_its_session_ind), 0x01,
                "Indicates whether this message is end of conversation.",
                HFILL
            }
        },
        {   &hf_smpp_opt_params,
            {   "Optional parameters", "smpp.opt_params",
                FT_NONE, BASE_NONE, NULL, 0x00,
                "The list of optional parameters in this operation.",
                HFILL
            }
        },
        {   &hf_smpp_opt_param,
            {   "Optional parameter", "smpp.opt_param",
                FT_NONE, BASE_NONE, NULL, 0x00,
                NULL,
                HFILL
            }
        },
        {   &hf_smpp_opt_param_tag,
            {   "Tag", "smpp.opt_param_tag",
                FT_UINT16, BASE_HEX, NULL, 0x00,
                "Optional parameter identifier tag",
                HFILL
            }
        },
        {   &hf_smpp_opt_param_len,
            {   "Length", "smpp.opt_param_len",
                FT_UINT16, BASE_DEC, NULL, 0x00,
                "Optional parameter length",
                HFILL
            }
        },

        /*
         * Data Coding Scheme
         */
        {   &hf_smpp_dcs_sms_coding_group,
            {   "DCS Coding Group for SMS", "smpp.dcs.sms_coding_group",
                FT_UINT8, BASE_HEX, VALS(vals_dcs_sms_coding_group), 0xF0,
                "Data Coding Scheme coding group for GSM Short Message Service.",
                HFILL
            }
        },
        {   &hf_smpp_dcs_reserved,
            {   "Reserved (should be zero)", "smpp.dcs.reserved",
                FT_UINT8, BASE_DEC, NULL, 0x08,
                NULL, HFILL
            }
        },
        {   &hf_smpp_dcs_charset,
            {   "DCS Character set", "smpp.dcs.charset",
                FT_UINT8, BASE_HEX, VALS(vals_dcs_charset), 0x04,
                "Specifies the character set used in the message.", HFILL
            }
        },
        {   &hf_smpp_dcs_class,
            {   "DCS Message class", "smpp.dcs.class",
                FT_UINT8, BASE_HEX, VALS(vals_dcs_class), 0x03,
                "Specifies the message class.", HFILL
            }
        },
        {   &hf_smpp_dcs_wait_ind,
            {   "Indication", "smpp.dcs.wait_ind",
                FT_UINT8, BASE_HEX, VALS(vals_msg_wait_ind), 0x08,
                "Indicates to the handset that a message is waiting.",
                HFILL
            }
        },
        {   &hf_smpp_dcs_reserved2,
            {   "Reserved (should be zero)", "smpp.dcs.reserved",
                FT_UINT8, BASE_DEC, NULL, 0x04,
                NULL, HFILL
            }
        },
        {   &hf_smpp_dcs_wait_type,
            {   "Type", "smpp.dcs.wait_type",
                FT_UINT8, BASE_HEX, VALS(vals_msg_wait_type), 0x03,
                "Indicates type of message that is waiting.",
                HFILL
            }
        },
        /* Changes in SMPP 5.0 */
        {       &hf_smpp_congestion_state,
                {       "Congestion State", "smpp.congestion_state",
                        FT_UINT8, BASE_DEC | BASE_RANGE_STRING, RVALS(vals_congestion_state), 0x00,
                        "Congestion info between ESME and MC for flow control/cong. control", HFILL
                }
        },
        {       &hf_smpp_billing_identification,
                {       "Billing Identification", "smpp.billing_id",
                        FT_BYTES, BASE_NONE, NULL, 0x00,
                        "Billing identification info", HFILL
                }
        },
        {       &hf_smpp_dest_addr_np_country,
                {       "Destination Country Code", "smpp.dest_addr_np_country",
                        FT_BYTES, BASE_NONE, NULL, 0x00,
                        "Destination Country Code (E.164 Region Code)", HFILL
                }
        },
        {       &hf_smpp_dest_addr_np_information,
                {       "Number Portability information", "smpp.dest_addr_np_info",
                        FT_BYTES, BASE_NONE, NULL, 0x00,
                        NULL, HFILL
                }
        },
        {       &hf_smpp_dest_addr_np_resolution,
                {       "Number Portability query information", "smpp.dest_addr_np_resolution",
                        FT_UINT8, BASE_DEC, VALS(vals_dest_addr_np_resolution), 0x00,
                        "Number Portability query information - method used to resolve number", HFILL
                }
        },
        {       &hf_smpp_source_network_id,
                {       "Source Network ID", "smpp.source_network_id",
                        FT_STRING, BASE_NONE, NULL, 0x00,
                        "Unique ID for a network or ESME operator", HFILL
                }
        },
        {       &hf_smpp_source_node_id,
                {       "Source Node ID", "smpp.source_node_id",
                        FT_BYTES, BASE_NONE, NULL, 0x00,
                        "Unique ID for a ESME or MC node", HFILL
                }
        },
        {       &hf_smpp_dest_network_id,
                {       "Destination Network ID", "smpp.dest_network_id",
                        FT_STRING, BASE_NONE, NULL, 0x00,
                        "Unique ID for a network or ESME operator", HFILL
                }
        },
        {       &hf_smpp_dest_node_id,
                {       "Destination Node ID", "smpp.dest_node_id",
                        FT_BYTES, BASE_NONE, NULL, 0x00,
                        "Unique ID for a ESME or MC node", HFILL
                }
        },
        {       &hf_smpp_broadcast_channel_indicator,
                {       "Cell Broadcast channel", "smpp.broadcast_channel_indicator",
                        FT_UINT8, BASE_DEC | BASE_RANGE_STRING, RVALS(vals_broadcast_channel_indicator), 0x00,
                        NULL, HFILL
                }
        },
        {       &hf_smpp_broadcast_content_type_nw,
                {       "Broadcast Content Type - Network Tag", "smpp.broadcast_content_type.nw",
                        FT_UINT8, BASE_DEC, VALS(vals_broadcast_content_type_nw), 0x00,
                        "Cell Broadcast content type", HFILL
                }
        },
        {       &hf_smpp_broadcast_content_type_type,
                {       "Broadcast Content Type - Content Type", "smpp.broadcast_content_type.type",
                        FT_UINT16, BASE_HEX, VALS(vals_broadcast_content_type_type), 0x00,
                        "Cell Broadcast content type", HFILL
                }
        },
        {       &hf_smpp_broadcast_content_type_info,
                {       "Broadcast Content Type Info", "smpp.broadcast_content_type.info",
                        FT_BYTES, BASE_NONE, NULL, 0x00,
                        "Cell Broadcast content type Info", HFILL
                }
        },
        {       &hf_smpp_broadcast_message_class,
                {       "Broadcast Message Class", "smpp.broadcast_message_class",
                        FT_UINT8, BASE_HEX, VALS(vals_broadcast_message_class), 0x00,
                        "Cell Broadcast Message Class", HFILL
                }
        },
        {       &hf_smpp_broadcast_rep_num,
                {       "Broadcast Message - Number of repetitions requested", "smpp.broadcast_rep_num",
                        FT_UINT16, BASE_DEC, NULL, 0x00,
                        "Cell Broadcast Message - Number of repetitions requested", HFILL
                }
        },
        {       &hf_smpp_broadcast_frequency_interval_unit,
                {       "Broadcast Message - frequency interval - Unit", "smpp.broadcast_frequency_interval.unit",
                        FT_UINT8, BASE_HEX, VALS(vals_broadcast_frequency_interval_unit), 0x00,
                        "Cell Broadcast Message - frequency interval at which broadcast must be repeated", HFILL
                }
        },
        {       &hf_smpp_broadcast_frequency_interval_value,
                {       "Broadcast Message - frequency interval - Unit", "smpp.broadcast_frequency_interval.value",
                        FT_UINT16, BASE_DEC, NULL, 0x00,
                        "Cell Broadcast Message - frequency interval at which broadcast must be repeated", HFILL
                }
        },
        {       &hf_smpp_broadcast_area_identifier,
                {       "Broadcast Message - Area Identifier", "smpp.broadcast_area_identifier",
                        FT_BYTES, BASE_NONE, NULL, 0x00,
                        "Cell Broadcast Message - Area Identifier", HFILL
                }
        },
        {       &hf_smpp_broadcast_area_identifier_format,
                {       "Broadcast Message - Area Identifier Format", "smpp.broadcast_area_identifier.format",
                        FT_UINT8, BASE_HEX | BASE_RANGE_STRING, RVALS(vals_broadcast_area_identifier_format), 0x00,
                        "Cell Broadcast Message - Area Identifier Format", HFILL
                }
        },
        {       &hf_smpp_broadcast_error_status,
                {       "Broadcast Message - Error Status", "smpp.broadcast_error_status",
                        FT_UINT32, BASE_HEX | BASE_RANGE_STRING, RVALS(rvals_command_status), 0x00,
                        "Cell Broadcast Message - Error Status", HFILL
                }
        },
        {       &hf_smpp_broadcast_area_success,
                {       "Broadcast Message - Area Success", "smpp.broadcast_area_success",
                        FT_UINT8, BASE_DEC | BASE_RANGE_STRING, RVALS(vals_broadcast_area_success), 0x00,
                        "Cell Broadcast Message - success rate indicator (ratio) - No. of BTS which accepted Message:Total BTS", HFILL
                }
        },
        {       &hf_smpp_broadcast_end_time,
                {       "Broadcast Message - End Time", "smpp.broadcast_end_time",
                        FT_ABSOLUTE_TIME, ABSOLUTE_TIME_UTC, NULL, 0x00,
                        "Cell Broadcast Message - Date and time at which MC set the state of the message to terminated", HFILL
                }
        },
        {       &hf_smpp_broadcast_end_time_r,
                {       "Broadcast Message - End Time", "smpp.broadcast_end_time_r",
                        FT_RELATIVE_TIME, BASE_NONE, NULL, 0x00,
                        "Cell Broadcast Message - Date and time at which MC set the state of the message to terminated", HFILL
                }
        },
        {       &hf_smpp_broadcast_service_group,
                {       "Broadcast Message - Service Group", "smpp.broadcast_service_group",
                        FT_BYTES, BASE_NONE, NULL, 0x00,
                        "Cell Broadcast Message - Service Group", HFILL
                }
        },
        /* Huawei SMPP+ extensions */
        {        &hf_huawei_smpp_smsc_addr,
                {       "SMPP+: GT of SMSC", "smpp.smsc_addr",
                        FT_STRING, BASE_NONE, NULL, 0x00,
                        NULL, HFILL
                }
        },
        {        &hf_huawei_smpp_msc_addr_noa,
                {       "SMPP+: NOA of MSC address", "smpp.msc_addr_noa",
                        FT_UINT8, BASE_DEC, VALS(vals_msc_addr_noa), 0x00,
                        "SMPP+: Indicates the TON of MSC address", HFILL
                }
        },
        {        &hf_huawei_smpp_msc_addr_npi,
                {       "SMPP+: NPI of MSC address", "smpp.msc_addr_npi",
                        FT_UINT8, BASE_DEC, VALS(vals_msc_addr_npi), 0x00,
                        "SMPP+: Indicates the NPI of MSC address", HFILL
                }
        },
        {        &hf_huawei_smpp_msc_addr,
                {       "SMPP+: GT of MSC", "smpp.msc_addr",
                        FT_STRING, BASE_NONE, NULL, 0x00,
                        NULL, HFILL
                }
        },
        {        &hf_huawei_smpp_mo_mt_flag,
                {       "SMPP+: Charge for MO or MT", "smpp.mo_mt_flag",
                        FT_UINT8, BASE_DEC, VALS(vals_mo_mt_flag), 0x00,
                        "SMPP+: Indicates the Charge side of  MO or MT", HFILL
                }
        },
        {        &hf_huawei_smpp_sm_id,
                {       "SMPP+: Unique SM ID", "smpp.sm_id",
                        FT_STRING, BASE_NONE, NULL, 0x00,
                        "SMPP+: Unique SM ID which is generated by SMSC", HFILL
                }
        },
        {        &hf_huawei_smpp_length_auth,
                {       "SMPP+: Length of SMS", "smpp.length_auth",
                        FT_UINT32, BASE_DEC, NULL, 0x00,
                        "SMPP+: Indicates the Length of SMS", HFILL
                }
        },
        {        &hf_huawei_smpp_service_id,
                {       "SMPP+: Service ID of SMSC", "smpp.service_id",
                        FT_UINT32, BASE_DEC, NULL, 0x00,
                        "SMPP+: Indicates the Service ID of SMSC", HFILL
                }
        },
        {        &hf_huawei_smpp_operation_result,
                {       "SMPP+: Authentication result of SCP", "smpp.operation_result",
                        FT_UINT32, BASE_DEC, VALS(vals_operation_result), 0x00,
                        "SMPP+: Indicates the Authentication result of SCP", HFILL
                }
        },
        {        &hf_huawei_smpp_notify_mode,
                {       "SMPP+: SMS notify mode", "smpp.notify_mode",
                        FT_UINT8, BASE_DEC, VALS(vals_notify_mode), 0x00,
                        "SMPP+: Indicates the SMS notify mode", HFILL
                }
        },
        {        &hf_huawei_smpp_delivery_result,
                {       "SMPP+: Delivery result of SMS", "smpp.delivery_result",
                        FT_UINT32, BASE_DEC, VALS(vals_delivery_result), 0x00,
                        "SMPP+: Indicates the Delivery result of SMS", HFILL
                }
        }
    };

    /* Setup protocol subtree array */
    static gint *ett[] = {
        &ett_smpp,
        &ett_dlist,
        &ett_dlist_resp,
        &ett_opt_params,
        &ett_opt_param,
        &ett_dcs,
    };

    static ei_register_info ei[] = {
        { &ei_smpp_message_payload_duplicate,
          { "smpp.message_payload.duplicate", PI_PROTOCOL, PI_WARN,
            "short_message field and message_payload TLV can only appear once in total",
            EXPFILL }
        }
    };

    /* Encoding used to decode the SMS over SMPP when DCS is 0 */
    static const enum_val_t smpp_dcs_0_sms_decode_options[] = {
        { "none",        "None",       DO_NOT_DECODE },
        { "ascii",       "ASCII",      ENC_ASCII },
        { "gsm7",        "GSM 7-bit",  ENC_3GPP_TS_23_038_7BITS_UNPACKED },
        { "gsm7-packed", "GSM 7-bit (packed)", ENC_3GPP_TS_23_038_7BITS_PACKED },
        { "iso-8859-1",  "ISO-8859-1", ENC_ISO_8859_1 },
        { "iso-8859-5",  "ISO-8859-5", ENC_ISO_8859_5 },
        { "iso-8859-8",  "ISO-8859-8", ENC_ISO_8859_8 },
        { "ucs2",        "UCS2",       ENC_UCS_2|ENC_BIG_ENDIAN },
        { "ks-c-5601",   "KS C 5601 (Korean)", ENC_EUC_KR },
        { NULL, NULL, 0 }
    };

    /* Register the protocol name and description */
    proto_smpp = proto_register_protocol("Short Message Peer to Peer",
                                         "SMPP", "smpp");

    /* Required function calls to register header fields and subtrees used */
    proto_register_field_array(proto_smpp, hf, array_length(hf));
    proto_register_subtree_array(ett, array_length(ett));

    expert_smpp = expert_register_protocol(proto_smpp);
    expert_register_field_array(expert_smpp, ei, array_length(ei));

    /* Allow other dissectors to find this one by name. */
    smpp_handle = register_dissector("smpp", dissect_smpp, proto_smpp);

    /* Register for tapping */
    smpp_tap = register_tap("smpp");

    /* Preferences */
    smpp_module = prefs_register_protocol (proto_smpp, NULL);
    prefs_register_bool_preference (smpp_module,
            "reassemble_smpp_over_tcp",
            "Reassemble SMPP over TCP messages spanning multiple TCP segments",
            "Whether the SMPP dissector should reassemble messages spanning multiple TCP segments."
            " To use this option, you must also enable "
            "\"Allow subdissectors to reassemble TCP streams\" in the TCP protocol settings.",
            &reassemble_over_tcp);
    prefs_register_enum_preference(smpp_module, "decode_sms_over_smpp",
            "Decode DCS 0 SMS as",
            "Whether to decode the SMS contents when DCS is equal to 0 (zero).",
            &smpp_decode_dcs_0_sms, smpp_dcs_0_sms_decode_options, FALSE);
    prefs_register_bool_preference(smpp_module, "gsm7_unpacked",
            "GSM 7-bit alphabet unpacked",
            "When the DCS indicates that the encoding is the GSM 7-bit "
            "alphabet, whether to decode it as unpacked (one character "
            "per octet) instead of packed.",
            &smpp_gsm7_unpacked);
}

void
proto_reg_handoff_smpp(void)
{
    /*
     * SMPP can be spoken on any port under TCP or X.25
     * ...how *do* we do that under X.25?
     *
     * We can register the heuristic SMPP dissector with X.25, for one
     * thing.  We don't currently have any mechanism to allow the user
     * to specify that a given X.25 circuit is to be dissected as SMPP,
     * however.
     */
    dissector_add_for_decode_as_with_preference("tcp.port", smpp_handle);
    ssl_dissector_add(0, smpp_handle);
    heur_dissector_add("tcp", dissect_smpp_heur, "SMPP over TCP Heuristics", "smpp_tcp", proto_smpp, HEURISTIC_ENABLE);
    heur_dissector_add("tls", dissect_smpp_heur, "SMPP over TLS Heuristics", "smpp_tls", proto_smpp, HEURISTIC_ENABLE);
    heur_dissector_add("x.25", dissect_smpp_heur, "SMPP over X.25 Heuristics", "smpp_x25", proto_smpp, HEURISTIC_ENABLE);

    /* Required for call_dissector() */
    gsm_sms_handle = find_dissector_add_dependency("gsm_sms_ud", proto_smpp);
    DISSECTOR_ASSERT(gsm_sms_handle);

    /* Tapping setup */
    stats_tree_register_with_group("smpp","smpp_commands", "SM_PP Operations", 0,
                                   smpp_stats_tree_per_packet, smpp_stats_tree_init,
                                   NULL, REGISTER_STAT_GROUP_TELEPHONY);

    exported_pdu_tap = find_tap_id(EXPORT_PDU_TAP_NAME_LAYER_7);
}

/*
 * 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:
 */