File: en50221.c

package info (click to toggle)
dvblast 3.4-1
  • links: PTS, VCS
  • area: main
  • in suites: bullseye, buster, sid
  • size: 688 kB
  • sloc: ansic: 10,589; sh: 382; makefile: 79
file content (2497 lines) | stat: -rw-r--r-- 78,597 bytes parent folder | download | duplicates (2)
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
/*****************************************************************************
 * en50221.c : implementation of the transport, session and applications
 * layers of EN 50 221
 *****************************************************************************
 * Copyright (C) 2004-2005, 2010, 2015 VideoLAN
 *
 * Authors: Christophe Massiot <massiot@via.ecp.fr>
 * Based on code from libdvbci Copyright (C) 2000 Klaus Schmidinger
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.    See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
 *****************************************************************************/
#include "config.h"

#ifdef HAVE_DVB_SUPPORT

#include <stdlib.h>
#include <stdint.h>
#include <stdbool.h>
#include <stddef.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <inttypes.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <poll.h>
#include <errno.h>
#include <time.h>
#include <ev.h>

/* DVB Card Drivers */
#include <linux/dvb/version.h>
#include <linux/dvb/dmx.h>
#include <linux/dvb/frontend.h>
#include <linux/dvb/ca.h>

#include <bitstream/mpeg/psi.h>
#include <bitstream/dvb/ci.h>
#include <bitstream/dvb/si.h>

#include "dvblast.h"
#include "en50221.h"
#include "comm.h"

#define TAB_APPEND( count, tab, p )             \
    if( (count) > 0 )                           \
    {                                           \
        (tab) = realloc( tab, sizeof( void ** ) * ( (count) + 1 ) ); \
    }                                           \
    else                                        \
    {                                           \
        (tab) = malloc( sizeof( void ** ) );    \
    }                                           \
    (tab)[count] = (p);                         \
    (count)++

/*****************************************************************************
 * Local declarations
 *****************************************************************************/
#undef DEBUG_TPDU
#define CAM_INIT_TIMEOUT 15000000 /* 15 s */
#undef HLCI_WAIT_CAM_READY
#define CAPMT_WAIT 100 /* ms */
#define CA_POLL_PERIOD 100000 /* 100 ms */

typedef struct en50221_msg_t
{
    uint8_t *p_data;
    int i_size;
    struct en50221_msg_t *p_next;
} en50221_msg_t;

typedef struct en50221_session_t
{
    int i_slot;
    int i_resource_id;
    void (* pf_handle)( access_t *, int, uint8_t *, int );
    void (* pf_close)( access_t *, int );
    void (* pf_manage)( access_t *, int );
    void *p_sys;
} en50221_session_t;

typedef struct ci_slot_t
{
    bool b_active;
    bool b_expect_answer;
    bool b_has_data;
    bool b_mmi_expected;
    bool b_mmi_undisplayed;

    /* TPDU reception */
    en50221_msg_t *p_recv;

    /* TPDU emission */
    en50221_msg_t *p_send;
    en50221_msg_t **pp_send_last;
    uint8_t *p;

    /* InitSlot timer */
    struct ev_timer init_watcher;

    /* SPDUSend callback, if p_spdu is not NULL */
    /* SessionOpen callback, if not 0 */
    int i_pending_session_id;
} ci_slot_t;

int i_ca_handle = 0;
int i_ca_type = -1;

static struct ev_io cam_watcher;
static struct ev_timer slot_watcher;
static int i_nb_slots = 0;
static ci_slot_t p_slots[MAX_CI_SLOTS];
static en50221_session_t p_sessions[MAX_SESSIONS];

/*****************************************************************************
 * Local prototypes
 *****************************************************************************/
static void SessionOpenCb( access_t *p_access, uint8_t i_slot );
static void SPDUHandle( access_t * p_access, uint8_t i_slot,
                        uint8_t *p_spdu, int i_size );

static void ResourceManagerOpen( access_t * p_access, int i_session_id );
static void ApplicationInformationOpen( access_t * p_access, int i_session_id );
static void ConditionalAccessOpen( access_t * p_access, int i_session_id );
static void DateTimeOpen( access_t * p_access, int i_session_id );
static void ResetSlotCb(struct ev_loop *loop, struct ev_timer *w, int revents);
static void en50221_Read(struct ev_loop *loop, struct ev_io *w, int revents);
static void en50221_Poll(struct ev_loop *loop, struct ev_timer *w, int revents);
static void MMIOpen( access_t * p_access, int i_session_id );

/*****************************************************************************
 * Utility functions
 *****************************************************************************/
#define SIZE_INDICATOR 0x80

static uint8_t *GetLength( uint8_t *p_data, int *pi_length )
{
    *pi_length = *p_data++;

    if ( (*pi_length & SIZE_INDICATOR) != 0 )
    {
        int l = *pi_length & ~SIZE_INDICATOR;
        int i;

        *pi_length = 0;
        for ( i = 0; i < l; i++ )
            *pi_length = (*pi_length << 8) | *p_data++;
    }

    return p_data;
}

static uint8_t *SetLength( uint8_t *p_data, int i_length )
{
    uint8_t *p = p_data;

    if ( i_length < 128 )
    {
        *p++ = i_length;
    }
    else if ( i_length < 256 )
    {
        *p++ = SIZE_INDICATOR | 0x1;
        *p++ = i_length;
    }
    else if ( i_length < 65536 )
    {
        *p++ = SIZE_INDICATOR | 0x2;
        *p++ = i_length >> 8;
        *p++ = i_length & 0xff;
    }
    else if ( i_length < 16777216 )
    {
        *p++ = SIZE_INDICATOR | 0x3;
        *p++ = i_length >> 16;
        *p++ = (i_length >> 8) & 0xff;
        *p++ = i_length & 0xff;
    }
    else
    {
        *p++ = SIZE_INDICATOR | 0x4;
        *p++ = i_length >> 24;
        *p++ = (i_length >> 16) & 0xff;
        *p++ = (i_length >> 8) & 0xff;
        *p++ = i_length & 0xff;
    }

    return p;
}


/*
 * Transport layer
 */

#define MAX_TPDU_SIZE  4096
#define MAX_TPDU_DATA  (MAX_TPDU_SIZE - 7)

#define DATA_INDICATOR 0x80

#define T_SB           0x80
#define T_RCV          0x81
#define T_CREATE_TC    0x82
#define T_CTC_REPLY    0x83
#define T_DELETE_TC    0x84
#define T_DTC_REPLY    0x85
#define T_REQUEST_TC   0x86
#define T_NEW_TC       0x87
#define T_TC_ERROR     0x88
#define T_DATA_LAST    0xA0
#define T_DATA_MORE    0xA1

static void Dump( bool b_outgoing, uint8_t *p_data, int i_size )
{
#ifdef DEBUG_TPDU
    int i;
#define MAX_DUMP 256
    fprintf(stderr, "%s ", b_outgoing ? "-->" : "<--");
    for ( i = 0; i < i_size && i < MAX_DUMP; i++)
        fprintf(stderr, "%02X ", p_data[i]);
    fprintf(stderr, "%s\n", i_size >= MAX_DUMP ? "..." : "");
#endif
}

/*****************************************************************************
 * TPDUWrite
 *****************************************************************************/
static int TPDUWrite( access_t * p_access, uint8_t i_slot )
{
    ci_slot_t *p_slot = &p_slots[i_slot];
    en50221_msg_t *p_send = p_slot->p_send;

    if ( p_slot->b_expect_answer )
        msg_Warn( p_access,
                  "en50221: writing while expecting an answer on slot %u",
                  i_slot );
    if ( p_send == NULL )
    {
        msg_Warn( p_access, "en50221: no data to write on slot %u !", i_slot );
        return -1;
    }
    p_slot->p_send = p_send->p_next;
    if ( p_slot->p_send == NULL )
        p_slot->pp_send_last = &p_slot->p_send;

    Dump( true, p_send->p_data, p_send->i_size );

    if ( write( i_ca_handle, p_send->p_data, p_send->i_size )
          != p_send->i_size )
    {
        msg_Err( p_access, "en50221: cannot write to CAM device (%m)" );
        free( p_send->p_data );
        free( p_send );
        return -1;
    }

    free( p_send->p_data );
    free( p_send );
    p_slot->b_expect_answer = true;

    return 0;
}

/*****************************************************************************
 * TPDUSend
 *****************************************************************************/
static int TPDUSend( access_t * p_access, uint8_t i_slot, uint8_t i_tag,
                     const uint8_t *p_content, int i_length )
{
    ci_slot_t *p_slot = &p_slots[i_slot];
    uint8_t i_tcid = i_slot + 1;
    en50221_msg_t *p_send = malloc( sizeof(en50221_msg_t) );
    uint8_t *p_data = malloc( MAX_TPDU_SIZE );
    int i_size;

    i_size = 0;
    p_data[0] = i_slot;
    p_data[1] = i_tcid;
    p_data[2] = i_tag;

    switch ( i_tag )
    {
    case T_RCV:
    case T_CREATE_TC:
    case T_CTC_REPLY:
    case T_DELETE_TC:
    case T_DTC_REPLY:
    case T_REQUEST_TC:
        p_data[3] = 1; /* length */
        p_data[4] = i_tcid;
        i_size = 5;
        break;

    case T_NEW_TC:
    case T_TC_ERROR:
        p_data[3] = 2; /* length */
        p_data[4] = i_tcid;
        p_data[5] = p_content[0];
        i_size = 6;
        break;

    case T_DATA_LAST:
    case T_DATA_MORE:
    {
        /* i_length <= MAX_TPDU_DATA */
        uint8_t *p = p_data + 3;
        p = SetLength( p, i_length + 1 );
        *p++ = i_tcid;

        if ( i_length )
            memcpy( p, p_content, i_length );
        i_size = i_length + (p - p_data);
        break;
    }

    default:
        break;
    }

    p_send->p_data = p_data;
    p_send->i_size = i_size;
    p_send->p_next = NULL;

    *p_slot->pp_send_last = p_send;
    p_slot->pp_send_last = &p_send->p_next;

    if ( !p_slot->b_expect_answer )
        return TPDUWrite( p_access, i_slot );

    return 0;
}


/*****************************************************************************
 * TPDURecv
 *****************************************************************************/
static int TPDURecv( access_t * p_access )
{
    ci_slot_t *p_slot;
    uint8_t i_tag, i_slot;
    uint8_t p_data[MAX_TPDU_SIZE];
    int i_size;
    bool b_last = false;

    do
    {
        i_size = read( i_ca_handle, p_data, MAX_TPDU_SIZE );
    }
    while ( i_size < 0 && errno == EINTR );

    if ( i_size < 5 )
    {
        msg_Err( p_access, "en50221: cannot read from CAM device (%d:%m)",
                 i_size );
        return -1;
    }

    Dump( false, p_data, i_size );

    i_slot = p_data[1] - 1;
    i_tag = p_data[2];

    if ( i_slot >= i_nb_slots )
    {
        msg_Warn( p_access, "en50221: TPDU is from an unknown slot %u",
                  i_slot );
        return -1;
    }
    p_slot = &p_slots[i_slot];

    p_slot->b_has_data = !!(p_data[i_size - 4] == T_SB
                             && p_data[i_size - 3] == 2
                             && (p_data[i_size - 1] & DATA_INDICATOR));
    p_slot->b_expect_answer = false;

    switch ( i_tag )
    {
    case T_CTC_REPLY:
        p_slot->b_active = true;
        ev_timer_stop(event_loop, &p_slot->init_watcher);
        msg_Dbg( p_access, "CI slot %d is active", i_slot );
        break;

    case T_SB:
        break;

    case T_DATA_LAST:
        b_last = true;
        /* intended pass-through */
    case T_DATA_MORE:
    {
        en50221_msg_t *p_recv;
        int i_session_size;
        uint8_t *p_session = GetLength( &p_data[3], &i_session_size );

        if ( i_session_size <= 1 )
            break;
        p_session++;
        i_session_size--;

        if ( p_slot->p_recv == NULL )
        {
            p_slot->p_recv = malloc( sizeof(en50221_msg_t) );
            p_slot->p_recv->p_data = NULL;
            p_slot->p_recv->i_size = 0;
        }

        p_recv = p_slot->p_recv;
        p_recv->p_data = realloc( p_recv->p_data,
                                  p_recv->i_size + i_session_size );
        memcpy( &p_recv->p_data[ p_recv->i_size ], p_session, i_session_size );
        p_recv->i_size += i_session_size;

        if ( b_last )
        {
            SPDUHandle( p_access, i_slot, p_recv->p_data, p_recv->i_size );
            free( p_recv->p_data );
            free( p_recv );
            p_slot->p_recv = NULL;
        }
        break;
    }

    default:
        msg_Warn( p_access, "en50221: unhandled R_TPDU tag %u slot %u", i_tag,
                  i_slot );
        break;
    }

    if ( !p_slot->b_expect_answer && p_slot->p_send != NULL )
        TPDUWrite( p_access, i_slot );
    if ( !p_slot->b_expect_answer && p_slot->i_pending_session_id != 0 )
        SessionOpenCb( p_access, i_slot );
    if ( !p_slot->b_expect_answer && p_slot->b_has_data )
        TPDUSend( p_access, i_slot, T_RCV, NULL, 0 );

    return 0;
}


/*
 * Session layer
 */

#define ST_SESSION_NUMBER           0x90
#define ST_OPEN_SESSION_REQUEST     0x91
#define ST_OPEN_SESSION_RESPONSE    0x92
#define ST_CREATE_SESSION           0x93
#define ST_CREATE_SESSION_RESPONSE  0x94
#define ST_CLOSE_SESSION_REQUEST    0x95
#define ST_CLOSE_SESSION_RESPONSE   0x96

#define SS_OK             0x00
#define SS_NOT_ALLOCATED  0xF0

#define RI_RESOURCE_MANAGER            0x00010041
#define RI_APPLICATION_INFORMATION     0x00020041
#define RI_CONDITIONAL_ACCESS_SUPPORT  0x00030041
#define RI_HOST_CONTROL                0x00200041
#define RI_DATE_TIME                   0x00240041
#define RI_MMI                         0x00400041

static int ResourceIdToInt( uint8_t *p_data )
{
    return ((int)p_data[0] << 24) | ((int)p_data[1] << 16)
            | ((int)p_data[2] << 8) | p_data[3];
}

/*****************************************************************************
 * SPDUSend
 *****************************************************************************/
static int SPDUSend( access_t *p_access, int i_session_id,
                      uint8_t *p_data, int i_size )
{
    uint8_t *p_spdu = malloc( i_size + 4 );
    uint8_t *p = p_spdu;
    uint8_t i_slot = p_sessions[i_session_id - 1].i_slot;

    *p++ = ST_SESSION_NUMBER;
    *p++ = 0x02;
    *p++ = (i_session_id >> 8);
    *p++ = i_session_id & 0xff;

    memcpy( p, p_data, i_size );

    i_size += 4;
    p = p_spdu;

    while ( i_size > 0 )
    {
        if ( i_size > MAX_TPDU_DATA )
        {
            if ( TPDUSend( p_access, i_slot, T_DATA_MORE, p,
                           MAX_TPDU_DATA ) != 0 )
            {
                msg_Err( p_access, "couldn't send TPDU on session %d",
                         i_session_id );
                free( p_spdu );
                return -1;
            }
            p += MAX_TPDU_DATA;
            i_size -= MAX_TPDU_DATA;
        }
        else
        {
            if ( TPDUSend( p_access, i_slot, T_DATA_LAST, p, i_size )
                    != 0 )
            {
                msg_Err( p_access, "couldn't send TPDU on session %d",
                         i_session_id );
                free( p_spdu );
                return -1;
            }
            i_size = 0;
        }
    }

    free( p_spdu );
    return 0;
}

/*****************************************************************************
 * SessionOpen
 *****************************************************************************/
static void SessionOpenCb( access_t *p_access, uint8_t i_slot )
{
    ci_slot_t *p_slot = &p_slots[i_slot];
    int i_session_id = p_slot->i_pending_session_id;
    int i_resource_id = p_sessions[i_session_id - 1].i_resource_id;

    p_slot->i_pending_session_id = 0;

    switch ( i_resource_id )
    {
    case RI_RESOURCE_MANAGER:
        ResourceManagerOpen( p_access, i_session_id ); break;
    case RI_APPLICATION_INFORMATION:
        ApplicationInformationOpen( p_access, i_session_id ); break;
    case RI_CONDITIONAL_ACCESS_SUPPORT:
        ConditionalAccessOpen( p_access, i_session_id ); break;
    case RI_DATE_TIME:
        DateTimeOpen( p_access, i_session_id ); break;
    case RI_MMI:
        MMIOpen( p_access, i_session_id ); break;

    case RI_HOST_CONTROL:
    default:
        msg_Err( p_access, "unknown resource id (0x%x)", i_resource_id );
        p_sessions[i_session_id - 1].i_resource_id = 0;
    }
}

static void SessionOpen( access_t * p_access, uint8_t i_slot,
                         uint8_t *p_spdu, int i_size )
{
    ci_slot_t *p_slot = &p_slots[i_slot];
    int i_session_id;
    int i_resource_id = ResourceIdToInt( &p_spdu[2] );
    uint8_t p_response[16];
    int i_status = SS_NOT_ALLOCATED;

    for ( i_session_id = 1; i_session_id <= MAX_SESSIONS; i_session_id++ )
    {
        if ( !p_sessions[i_session_id - 1].i_resource_id )
            break;
    }
    if ( i_session_id > MAX_SESSIONS )
    {
        msg_Err( p_access, "too many sessions !" );
        return;
    }
    p_sessions[i_session_id - 1].i_slot = i_slot;
    p_sessions[i_session_id - 1].i_resource_id = i_resource_id;
    p_sessions[i_session_id - 1].pf_close = NULL;
    p_sessions[i_session_id - 1].pf_manage = NULL;

    if ( i_resource_id == RI_RESOURCE_MANAGER
          || i_resource_id == RI_APPLICATION_INFORMATION
          || i_resource_id == RI_CONDITIONAL_ACCESS_SUPPORT
          || i_resource_id == RI_DATE_TIME
          || i_resource_id == RI_MMI )
    {
        i_status = SS_OK;
    }

    p_response[0] = ST_OPEN_SESSION_RESPONSE;
    p_response[1] = 0x7;
    p_response[2] = i_status;
    p_response[3] = p_spdu[2];
    p_response[4] = p_spdu[3];
    p_response[5] = p_spdu[4];
    p_response[6] = p_spdu[5];
    p_response[7] = i_session_id >> 8;
    p_response[8] = i_session_id & 0xff;

    if ( TPDUSend( p_access, i_slot, T_DATA_LAST, p_response, 9 ) != 0 )
    {
        msg_Err( p_access,
                 "SessionOpen: couldn't send TPDU on slot %d", i_slot );
        return;
    }

    if ( p_slot->i_pending_session_id != 0 )
        msg_Warn( p_access, "overwriting pending session %d",
                  p_slot->i_pending_session_id );
    p_slot->i_pending_session_id = i_session_id;
}

#if 0
/* unused code for the moment - commented out to keep gcc happy */
/*****************************************************************************
 * SessionCreate
 *****************************************************************************/
static void SessionCreate( access_t * p_access, int i_slot, int i_resource_id )
{
    uint8_t p_response[16];
    uint8_t i_tag;
    int i_session_id;

    for ( i_session_id = 1; i_session_id <= MAX_SESSIONS; i_session_id++ )
    {
        if ( !p_sessions[i_session_id - 1].i_resource_id )
            break;
    }
    if ( i_session_id > MAX_SESSIONS )
    {
        msg_Err( p_access, "too many sessions !" );
        return;
    }
    p_sessions[i_session_id - 1].i_slot = i_slot;
    p_sessions[i_session_id - 1].i_resource_id = i_resource_id;
    p_sessions[i_session_id - 1].pf_close = NULL;
    p_sessions[i_session_id - 1].pf_manage = NULL;
    p_sessions[i_session_id - 1].p_sys = NULL;

    p_response[0] = ST_CREATE_SESSION;
    p_response[1] = 0x6;
    p_response[2] = i_resource_id >> 24;
    p_response[3] = (i_resource_id >> 16) & 0xff;
    p_response[4] = (i_resource_id >> 8) & 0xff;
    p_response[5] = i_resource_id & 0xff;
    p_response[6] = i_session_id >> 8;
    p_response[7] = i_session_id & 0xff;

    if ( TPDUSend( p_access, i_slot, T_DATA_LAST, p_response, 4 ) !=
            0 )
    {
        msg_Err( p_access,
                 "SessionCreate: couldn't send TPDU on slot %d", i_slot );
        return;
    }
}
#endif

/*****************************************************************************
 * SessionCreateResponse
 *****************************************************************************/
static void SessionCreateResponse( access_t * p_access, uint8_t i_slot,
                                   uint8_t *p_spdu, int i_size )
{
    int i_status = p_spdu[2];
    int i_resource_id = ResourceIdToInt( &p_spdu[3] );
    int i_session_id = ((int)p_spdu[7] << 8) | p_spdu[8];

    if ( i_status != SS_OK )
    {
        msg_Err( p_access, "SessionCreateResponse: failed to open session %d"
                 " resource=0x%x status=0x%x", i_session_id, i_resource_id,
                 i_status );
        p_sessions[i_session_id - 1].i_resource_id = 0;
        return;
    }

    switch ( i_resource_id )
    {
    case RI_RESOURCE_MANAGER:
        ResourceManagerOpen( p_access, i_session_id ); break;
    case RI_APPLICATION_INFORMATION:
        ApplicationInformationOpen( p_access, i_session_id ); break;
    case RI_CONDITIONAL_ACCESS_SUPPORT:
        ConditionalAccessOpen( p_access, i_session_id ); break;
    case RI_DATE_TIME:
        DateTimeOpen( p_access, i_session_id ); break;
    case RI_MMI:
        MMIOpen( p_access, i_session_id ); break;

    case RI_HOST_CONTROL:
    default:
        msg_Err( p_access, "unknown resource id (0x%x)", i_resource_id );
        p_sessions[i_session_id - 1].i_resource_id = 0;
    }
}

/*****************************************************************************
 * SessionSendClose
 *****************************************************************************/
static void SessionSendClose( access_t * p_access, int i_session_id )
{
    uint8_t p_response[16];
    uint8_t i_slot = p_sessions[i_session_id - 1].i_slot;

    p_response[0] = ST_CLOSE_SESSION_REQUEST;
    p_response[1] = 0x2;
    p_response[2] = i_session_id >> 8;
    p_response[3] = i_session_id & 0xff;

    if ( TPDUSend( p_access, i_slot, T_DATA_LAST, p_response, 4 ) !=
            0 )
    {
        msg_Err( p_access,
                 "SessionSendClose: couldn't send TPDU on slot %d", i_slot );
        return;
    }
}

/*****************************************************************************
 * SessionClose
 *****************************************************************************/
static void SessionClose( access_t * p_access, int i_session_id )
{
    uint8_t p_response[16];
    uint8_t i_slot = p_sessions[i_session_id - 1].i_slot;

    if ( p_sessions[i_session_id - 1].pf_close != NULL )
        p_sessions[i_session_id - 1].pf_close( p_access, i_session_id );
    p_sessions[i_session_id - 1].i_resource_id = 0;

    p_response[0] = ST_CLOSE_SESSION_RESPONSE;
    p_response[1] = 0x3;
    p_response[2] = SS_OK;
    p_response[3] = i_session_id >> 8;
    p_response[4] = i_session_id & 0xff;

    if ( TPDUSend( p_access, i_slot, T_DATA_LAST, p_response, 5 ) !=
            0 )
    {
        msg_Err( p_access,
                 "SessionClose: couldn't send TPDU on slot %d", i_slot );
        return;
    }
}

/*****************************************************************************
 * SPDUHandle
 *****************************************************************************/
static void SPDUHandle( access_t * p_access, uint8_t i_slot,
                        uint8_t *p_spdu, int i_size )
{
    int i_session_id;

    switch ( p_spdu[0] )
    {
    case ST_SESSION_NUMBER:
        if ( i_size <= 4 )
            return;
        i_session_id = (p_spdu[2] << 8) | p_spdu[3];
        if ( i_session_id <= MAX_SESSIONS
              && p_sessions[i_session_id - 1].pf_handle != NULL )
            p_sessions[i_session_id - 1].pf_handle( p_access, i_session_id,
                                                    p_spdu + 4, i_size - 4 );
        break;

    case ST_OPEN_SESSION_REQUEST:
        if ( i_size != 6 || p_spdu[1] != 0x4 )
            return;
        SessionOpen( p_access, i_slot, p_spdu, i_size );
        break;

    case ST_CREATE_SESSION_RESPONSE:
        if ( i_size != 9 || p_spdu[1] != 0x7 )
            return;
        SessionCreateResponse( p_access, i_slot, p_spdu, i_size );
        break;

    case ST_CLOSE_SESSION_REQUEST:
        if ( i_size != 4 || p_spdu[1] != 0x2 )
            return;
        i_session_id = ((int)p_spdu[2] << 8) | p_spdu[3];
        SessionClose( p_access, i_session_id );
        break;

    case ST_CLOSE_SESSION_RESPONSE:
        if ( i_size != 5 || p_spdu[1] != 0x3 )
            return;
        i_session_id = ((int)p_spdu[3] << 8) | p_spdu[4];
        if ( p_spdu[2] )
        {
            msg_Err( p_access, "closing a session which is not allocated (%d)",
                     i_session_id );
        }
        else
        {
            if ( p_sessions[i_session_id - 1].pf_close != NULL )
                p_sessions[i_session_id - 1].pf_close( p_access,
                                                              i_session_id );
            p_sessions[i_session_id - 1].i_resource_id = 0;
        }
        break;

    default:
        msg_Err( p_access, "unexpected tag in SPDUHandle (%x)", p_spdu[0] );
        break;
    }
}


/*
 * Application layer
 */

#define AOT_NONE                    0x000000
#define AOT_PROFILE_ENQ             0x9F8010
#define AOT_PROFILE                 0x9F8011
#define AOT_PROFILE_CHANGE          0x9F8012
#define AOT_APPLICATION_INFO_ENQ    0x9F8020
#define AOT_APPLICATION_INFO        0x9F8021
#define AOT_ENTER_MENU              0x9F8022
#define AOT_CA_INFO_ENQ             0x9F8030
#define AOT_CA_INFO                 0x9F8031
#define AOT_CA_PMT                  0x9F8032
#define AOT_CA_PMT_REPLY            0x9F8033
#define AOT_CA_UPDATE               0x9F8034
#define AOT_TUNE                    0x9F8400
#define AOT_REPLACE                 0x9F8401
#define AOT_CLEAR_REPLACE           0x9F8402
#define AOT_ASK_RELEASE             0x9F8403
#define AOT_DATE_TIME_ENQ           0x9F8440
#define AOT_DATE_TIME               0x9F8441
#define AOT_CLOSE_MMI               0x9F8800
#define AOT_DISPLAY_CONTROL         0x9F8801
#define AOT_DISPLAY_REPLY           0x9F8802
#define AOT_TEXT_LAST               0x9F8803
#define AOT_TEXT_MORE               0x9F8804
#define AOT_KEYPAD_CONTROL          0x9F8805
#define AOT_KEYPRESS                0x9F8806
#define AOT_ENQ                     0x9F8807
#define AOT_ANSW                    0x9F8808
#define AOT_MENU_LAST               0x9F8809
#define AOT_MENU_MORE               0x9F880A
#define AOT_MENU_ANSW               0x9F880B
#define AOT_LIST_LAST               0x9F880C
#define AOT_LIST_MORE               0x9F880D
#define AOT_SUBTITLE_SEGMENT_LAST   0x9F880E
#define AOT_SUBTITLE_SEGMENT_MORE   0x9F880F
#define AOT_DISPLAY_MESSAGE         0x9F8810
#define AOT_SCENE_END_MARK          0x9F8811
#define AOT_SCENE_DONE              0x9F8812
#define AOT_SCENE_CONTROL           0x9F8813
#define AOT_SUBTITLE_DOWNLOAD_LAST  0x9F8814
#define AOT_SUBTITLE_DOWNLOAD_MORE  0x9F8815
#define AOT_FLUSH_DOWNLOAD          0x9F8816
#define AOT_DOWNLOAD_REPLY          0x9F8817
#define AOT_COMMS_CMD               0x9F8C00
#define AOT_CONNECTION_DESCRIPTOR   0x9F8C01
#define AOT_COMMS_REPLY             0x9F8C02
#define AOT_COMMS_SEND_LAST         0x9F8C03
#define AOT_COMMS_SEND_MORE         0x9F8C04
#define AOT_COMMS_RCV_LAST          0x9F8C05
#define AOT_COMMS_RCV_MORE          0x9F8C06

/*****************************************************************************
 * APDUGetTag
 *****************************************************************************/
static int APDUGetTag( const uint8_t *p_apdu, int i_size )
{
    if ( i_size >= 3 )
    {
        int i, t = 0;
        for ( i = 0; i < 3; i++ )
            t = (t << 8) | *p_apdu++;
        return t;
    }

    return AOT_NONE;
}

/*****************************************************************************
 * APDUGetLength
 *****************************************************************************/
static uint8_t *APDUGetLength( uint8_t *p_apdu, int *pi_size )
{
    return GetLength( &p_apdu[3], pi_size );
}

/*****************************************************************************
 * APDUSend
 *****************************************************************************/
static int APDUSend( access_t * p_access, int i_session_id, int i_tag,
                      uint8_t *p_data, int i_size )
{
    uint8_t *p_apdu = malloc( i_size + 12 );
    uint8_t *p = p_apdu;
    ca_msg_t ca_msg;
    int i_ret;

    *p++ = (i_tag >> 16);
    *p++ = (i_tag >> 8) & 0xff;
    *p++ = i_tag & 0xff;
    p = SetLength( p, i_size );
    if ( i_size )
        memcpy( p, p_data, i_size );
    if ( i_ca_type == CA_CI_LINK )
    {
        i_ret = SPDUSend( p_access, i_session_id, p_apdu, i_size + p - p_apdu );
    }
    else
    {
        if ( i_size + p - p_apdu > 256 )
        {
            msg_Err( p_access, "CAM: apdu overflow" );
            i_ret = -1;
        }
        else
        {
            ca_msg.length = i_size + p - p_apdu;
            if ( i_size == 0 ) ca_msg.length=3;
            memcpy( ca_msg.msg, p_apdu, i_size + p - p_apdu );
            i_ret = ioctl(i_ca_handle, CA_SEND_MSG, &ca_msg );
            if ( i_ret < 0 )
            {
                msg_Err( p_access, "Error sending to CAM: %m" );
                i_ret = -1;
            }
        }
    }
    free( p_apdu );
    return i_ret;
}

/*
 * Resource Manager
 */

/*****************************************************************************
 * ResourceManagerHandle
 *****************************************************************************/
static void ResourceManagerHandle( access_t * p_access, int i_session_id,
                                   uint8_t *p_apdu, int i_size )
{
    int i_tag = APDUGetTag( p_apdu, i_size );

    switch ( i_tag )
    {
    case AOT_PROFILE_ENQ:
    {
        int resources[] = { htonl(RI_RESOURCE_MANAGER),
                            htonl(RI_APPLICATION_INFORMATION),
                            htonl(RI_CONDITIONAL_ACCESS_SUPPORT),
                            htonl(RI_DATE_TIME),
                            htonl(RI_MMI)
                          };
        APDUSend( p_access, i_session_id, AOT_PROFILE, (uint8_t*)resources,
                  sizeof(resources) );
        break;
    }
    case AOT_PROFILE:
        APDUSend( p_access, i_session_id, AOT_PROFILE_CHANGE, NULL, 0 );
        break;

    default:
        msg_Err( p_access, "unexpected tag in ResourceManagerHandle (0x%x)",
                 i_tag );
    }
}

/*****************************************************************************
 * ResourceManagerOpen
 *****************************************************************************/
static void ResourceManagerOpen( access_t * p_access, int i_session_id )
{

    msg_Dbg( p_access, "opening ResourceManager session (%d)", i_session_id );

    p_sessions[i_session_id - 1].pf_handle = ResourceManagerHandle;

    APDUSend( p_access, i_session_id, AOT_PROFILE_ENQ, NULL, 0 );
}

/*
 * Application Information
 */

/*****************************************************************************
 * ApplicationInformationEnterMenu
 *****************************************************************************/
static void ApplicationInformationEnterMenu( access_t * p_access,
                                             int i_session_id )
{
    int i_slot = p_sessions[i_session_id - 1].i_slot;

    msg_Dbg( p_access, "entering MMI menus on session %d", i_session_id );
    APDUSend( p_access, i_session_id, AOT_ENTER_MENU, NULL, 0 );
    p_slots[i_slot].b_mmi_expected = true;
}

/*****************************************************************************
 * ApplicationInformationHandle
 *****************************************************************************/
static void ApplicationInformationHandle( access_t * p_access, int i_session_id,
                                          uint8_t *p_apdu, int i_size )
{
    int i_tag = APDUGetTag( p_apdu, i_size );

    switch ( i_tag )
    {
    case AOT_APPLICATION_INFO:
    {
        int i_type, i_manufacturer, i_code;
        int l = 0;
        uint8_t *d = APDUGetLength( p_apdu, &l );

        if ( l < 4 ) break;

        i_type = *d++;
        i_manufacturer = ((int)d[0] << 8) | d[1];
        d += 2;
        i_code = ((int)d[0] << 8) | d[1];
        d += 2;
        d = GetLength( d, &l );

        {
            char *psz_name = malloc(l + 1);
            memcpy( psz_name, d, l );
            psz_name[l] = '\0';
            msg_Info( p_access, "CAM: %s, %02X, %04X, %04X",
                      psz_name, i_type, i_manufacturer, i_code );
            switch (i_print_type)
            {
            case PRINT_XML:
                psz_name = dvb_string_xml_escape(psz_name);
                fprintf(print_fh, "<STATUS type=\"cam\" status=\"1\" cam_name=\"%s\" cam_type=\"%d\" cam_manufacturer=\"%d\" cam_product=\"%d\" />\n",
                        psz_name, i_type, i_manufacturer, i_code);
                break;
            case PRINT_TEXT:
                fprintf(print_fh, "CAM name: %s type: %d manufacturer: %d product: %d\n",
                        psz_name, i_type, i_manufacturer, i_code);
                break;
            default:
                break;
            }
            free(psz_name);
        }
        break;
    }
    default:
        msg_Err( p_access,
                 "unexpected tag in ApplicationInformationHandle (0x%x)",
                 i_tag );
    }
}

/*****************************************************************************
 * ApplicationInformationOpen
 *****************************************************************************/
static void ApplicationInformationOpen( access_t * p_access, int i_session_id )
{

    msg_Dbg( p_access, "opening ApplicationInformation session (%d)", i_session_id );

    p_sessions[i_session_id - 1].pf_handle = ApplicationInformationHandle;

    APDUSend( p_access, i_session_id, AOT_APPLICATION_INFO_ENQ, NULL, 0 );
}

/*
 * Conditional Access
 */

typedef struct
{
    int i_nb_system_ids;
    uint16_t *pi_system_ids;

    int i_selected_programs;
    int b_high_level;
} system_ids_t;

static bool CheckSystemID( system_ids_t *p_ids, uint16_t i_id )
{
    int i;
    if( p_ids == NULL ) return false;
    if( p_ids->b_high_level ) return true;

    for ( i = 0; i < p_ids->i_nb_system_ids; i++ )
        if ( p_ids->pi_system_ids[i] == i_id )
            return true;

    return false;
}

/*****************************************************************************
 * CAPMTBuild
 *****************************************************************************/
static bool HasCADescriptors( system_ids_t *p_ids, uint8_t *p_descs )
{
    const uint8_t *p_desc;
    uint16_t j = 0;

    while ( (p_desc = descs_get_desc( p_descs, j )) != NULL )
    {
        uint8_t i_tag = desc_get_tag( p_desc );
        j++;

        if ( i_tag == 0x9 && desc09_validate( p_desc )
              && CheckSystemID( p_ids, desc09_get_sysid( p_desc ) ) )
            return true;
    }

    return false;
}

static void CopyCADescriptors( system_ids_t *p_ids, uint8_t i_cmd,
                               uint8_t *p_infos, uint8_t *p_descs )
{
    const uint8_t *p_desc;
    uint16_t j = 0, k = 0;

    capmti_init( p_infos );
    capmti_set_length( p_infos, 0xfff );
    capmti_set_cmd( p_infos, i_cmd );

    while ( (p_desc = descs_get_desc( p_descs, j )) != NULL )
    {
        uint8_t i_tag = desc_get_tag( p_desc );
        j++;

        if ( i_tag == 0x9 && desc09_validate( p_desc )
              && CheckSystemID( p_ids, desc09_get_sysid( p_desc ) ) )
        {
            uint8_t *p_info = capmti_get_info( p_infos, k );
            k++;
            memcpy( p_info, p_desc,
                    DESC_HEADER_SIZE + desc_get_length( p_desc ) );
        }
    }

    if ( k )
    {
        uint8_t *p_info = capmti_get_info( p_infos, k );
        capmti_set_length( p_infos, p_info - p_infos - DESCS_HEADER_SIZE );
    }
    else
        capmti_set_length( p_infos, 0 );
}

static uint8_t *CAPMTBuild( access_t * p_access, int i_session_id,
                            uint8_t *p_pmt, uint8_t i_list_mgt,
                            uint8_t i_cmd, int *pi_capmt_size )
{
    system_ids_t *p_ids =
        (system_ids_t *)p_sessions[i_session_id - 1].p_sys;
    uint8_t *p_es;
    uint8_t *p_capmt, *p_capmt_n;
    uint16_t j, k;
    bool b_has_ca = HasCADescriptors( p_ids, pmt_get_descs( p_pmt ) );
    bool b_has_es = false;

    j = 0;
    while ( (p_es = pmt_get_es( p_pmt, j )) != NULL )
    {
        uint16_t i_pid = pmtn_get_pid( p_es );
        j++;

        if ( demux_PIDIsSelected( i_pid ) )
        {
            b_has_es = true;
            b_has_ca = b_has_ca
                        || HasCADescriptors( p_ids, pmtn_get_descs( p_es ) );
        }
    }

    if ( !b_has_es )
    {
        *pi_capmt_size = 0;
        return NULL;
    }

    if ( !b_has_ca )
    {
        msg_Warn( p_access,
                  "no compatible scrambling system for SID %d on session %d",
                  pmt_get_program( p_pmt ), i_session_id );
        *pi_capmt_size = 0;
        return NULL;
    }

    p_capmt = capmt_allocate();
    capmt_init( p_capmt );
    capmt_set_listmanagement( p_capmt, i_list_mgt );
    capmt_set_program( p_capmt, pmt_get_program( p_pmt ) );
    capmt_set_version( p_capmt, psi_get_version( p_pmt ) );

    CopyCADescriptors( p_ids, i_cmd, capmt_get_infos( p_capmt ),
                       pmt_get_descs( p_pmt ) );

    j = 0; k = 0;
    while ( (p_es = pmt_get_es( p_pmt, j )) != NULL )
    {
        uint16_t i_pid = pmtn_get_pid( p_es );
        j++;

        if ( !demux_PIDIsSelected( i_pid ) )
            continue;

        p_capmt_n = capmt_get_es( p_capmt, k );
        k++;

        capmtn_init( p_capmt_n );
        capmtn_set_streamtype( p_capmt_n, pmtn_get_streamtype( p_es ) );
        capmtn_set_pid( p_capmt_n, pmtn_get_pid( p_es ) );

        CopyCADescriptors( p_ids, i_cmd, capmtn_get_infos( p_capmt_n ),
                           pmtn_get_descs( p_es ) );
    }

    p_capmt_n = capmt_get_es( p_capmt, k );
    *pi_capmt_size = p_capmt_n - p_capmt;

    return p_capmt;
}

/*****************************************************************************
 * CAPMTFirst
 *****************************************************************************/
static void CAPMTFirst( access_t * p_access, int i_session_id, uint8_t *p_pmt )
{
    uint8_t *p_capmt;
    int i_capmt_size;

    msg_Dbg( p_access, "adding first CAPMT for SID %d on session %d",
             pmt_get_program( p_pmt ), i_session_id );

    p_capmt = CAPMTBuild( p_access, i_session_id, p_pmt,
                          0x3 /* only */, 0x1 /* ok_descrambling */,
                          &i_capmt_size );

    if ( i_capmt_size )
    {
        APDUSend( p_access, i_session_id, AOT_CA_PMT, p_capmt, i_capmt_size );
        free( p_capmt );
    }
}

/*****************************************************************************
 * CAPMTAdd
 *****************************************************************************/
static void CAPMTAdd( access_t * p_access, int i_session_id, uint8_t *p_pmt )
{
    system_ids_t *p_ids =
        (system_ids_t *)p_sessions[i_session_id - 1].p_sys;
    uint8_t *p_capmt;
    int i_capmt_size;

    p_ids->i_selected_programs++;
    if( p_ids->i_selected_programs == 1 )
    {
        CAPMTFirst( p_access, i_session_id, p_pmt );
        return;
    }

    msg_Dbg( p_access, "adding CAPMT for SID %d on session %d",
             pmt_get_program( p_pmt ), i_session_id );

    p_capmt = CAPMTBuild( p_access, i_session_id, p_pmt,
                          0x4 /* add */, 0x1 /* ok_descrambling */,
                          &i_capmt_size );

    if ( i_capmt_size )
    {
        APDUSend( p_access, i_session_id, AOT_CA_PMT, p_capmt, i_capmt_size );
        free( p_capmt );
    }
}

/*****************************************************************************
 * CAPMTUpdate
 *****************************************************************************/
static void CAPMTUpdate( access_t * p_access, int i_session_id, uint8_t *p_pmt )
{
    uint8_t *p_capmt;
    int i_capmt_size;

    msg_Dbg( p_access, "updating CAPMT for SID %d on session %d",
             pmt_get_program( p_pmt ), i_session_id );

    p_capmt = CAPMTBuild( p_access, i_session_id, p_pmt,
                          0x5 /* update */, 0x1 /* ok_descrambling */,
                          &i_capmt_size );

    if ( i_capmt_size )
    {
        APDUSend( p_access, i_session_id, AOT_CA_PMT, p_capmt, i_capmt_size );
        free( p_capmt );
    }
}

/*****************************************************************************
 * CAPMTDelete
 *****************************************************************************/
static void CAPMTDelete( access_t * p_access, int i_session_id, uint8_t *p_pmt )
{
    system_ids_t *p_ids =
        (system_ids_t *)p_sessions[i_session_id - 1].p_sys;
    uint8_t *p_capmt;
    int i_capmt_size;

    p_ids->i_selected_programs--;
    msg_Dbg( p_access, "deleting CAPMT for SID %d on session %d",
             pmt_get_program( p_pmt ), i_session_id );

    p_capmt = CAPMTBuild( p_access, i_session_id, p_pmt,
                          0x5 /* update */, 0x4 /* not selected */,
                          &i_capmt_size );

    if ( i_capmt_size )
    {
        APDUSend( p_access, i_session_id, AOT_CA_PMT, p_capmt, i_capmt_size );
        free( p_capmt );
    }
}

/*****************************************************************************
 * ConditionalAccessHandle
 *****************************************************************************/
static void ConditionalAccessHandle( access_t * p_access, int i_session_id,
                                     uint8_t *p_apdu, int i_size )
{
    system_ids_t *p_ids =
        (system_ids_t *)p_sessions[i_session_id - 1].p_sys;
    int i_tag = APDUGetTag( p_apdu, i_size );

    switch ( i_tag )
    {
    case AOT_CA_INFO:
    {
        int i;
        int l = 0;
        uint8_t *d = APDUGetLength( p_apdu, &l );
        msg_Dbg( p_access, "CA system IDs supported by the application :" );

        if ( p_ids->i_nb_system_ids )
            free( p_ids->pi_system_ids );
        p_ids->i_nb_system_ids = l / 2;
        p_ids->pi_system_ids = malloc( p_ids->i_nb_system_ids
                                        * sizeof(uint16_t) );

        for ( i = 0; i < p_ids->i_nb_system_ids; i++ )
        {
            p_ids->pi_system_ids[i] = ((uint16_t)d[0] << 8) | d[1];
            d += 2;
            msg_Dbg( p_access, "- 0x%x", p_ids->pi_system_ids[i] );
        }

        demux_ResendCAPMTs();
        break;
    }

    case AOT_CA_UPDATE:
        /* http://www.cablelabs.com/specifications/OC-SP-HOSTPOD-IF-I08-011221.pdf */
    case AOT_CA_PMT_REPLY:
        /* We do not care */
        break;

    default:
        msg_Err( p_access,
                 "unexpected tag in ConditionalAccessHandle (0x%x)",
                 i_tag );
    }
}

/*****************************************************************************
 * ConditionalAccessClose
 *****************************************************************************/
static void ConditionalAccessClose( access_t * p_access, int i_session_id )
{

    msg_Dbg( p_access, "closing ConditionalAccess session (%d)", i_session_id );

    free( p_sessions[i_session_id - 1].p_sys );
}

/*****************************************************************************
 * ConditionalAccessOpen
 *****************************************************************************/
static void ConditionalAccessOpen( access_t * p_access, int i_session_id )
{

    msg_Dbg( p_access, "opening ConditionalAccess session (%d)", i_session_id );

    p_sessions[i_session_id - 1].pf_handle = ConditionalAccessHandle;
    p_sessions[i_session_id - 1].pf_close = ConditionalAccessClose;
    p_sessions[i_session_id - 1].p_sys = malloc(sizeof(system_ids_t));
    memset( p_sessions[i_session_id - 1].p_sys, 0,
            sizeof(system_ids_t) );

    APDUSend( p_access, i_session_id, AOT_CA_INFO_ENQ, NULL, 0 );
}

/*
 * Date Time
 */

typedef struct
{
    int i_session_id;
    int i_interval;
    struct ev_timer watcher;
} date_time_t;

/*****************************************************************************
 * DateTimeSend
 *****************************************************************************/
static void DateTimeSend( access_t * p_access, int i_session_id )
{
    date_time_t *p_date =
        (date_time_t *)p_sessions[i_session_id - 1].p_sys;

    time_t t = time(NULL);
    struct tm tm_gmt;
    struct tm tm_loc;

    if ( gmtime_r(&t, &tm_gmt) && localtime_r(&t, &tm_loc) )
    {
        int Y = tm_gmt.tm_year;
        int M = tm_gmt.tm_mon + 1;
        int D = tm_gmt.tm_mday;
        int L = (M == 1 || M == 2) ? 1 : 0;
        int MJD = 14956 + D + (int)((Y - L) * 365.25)
                    + (int)((M + 1 + L * 12) * 30.6001);
        uint8_t p_response[7];

#define DEC2BCD(d) (((d / 10) << 4) + (d % 10))

        p_response[0] = htons(MJD) >> 8;
        p_response[1] = htons(MJD) & 0xff;
        p_response[2] = DEC2BCD(tm_gmt.tm_hour);
        p_response[3] = DEC2BCD(tm_gmt.tm_min);
        p_response[4] = DEC2BCD(tm_gmt.tm_sec);
        p_response[5] = htons(tm_loc.tm_gmtoff / 60) >> 8;
        p_response[6] = htons(tm_loc.tm_gmtoff / 60) & 0xff;

        APDUSend( p_access, i_session_id, AOT_DATE_TIME, p_response, 7 );

        ev_timer_again(event_loop, &p_date->watcher);
    }
}

static void _DateTimeSend(struct ev_loop *loop, struct ev_timer *w, int revents)
{
    date_time_t *p_date = container_of(w, date_time_t, watcher);
    DateTimeSend( NULL, p_date->i_session_id );
}

/*****************************************************************************
 * DateTimeHandle
 *****************************************************************************/
static void DateTimeHandle( access_t * p_access, int i_session_id,
                            uint8_t *p_apdu, int i_size )
{
    date_time_t *p_date =
        (date_time_t *)p_sessions[i_session_id - 1].p_sys;

    int i_tag = APDUGetTag( p_apdu, i_size );

    switch ( i_tag )
    {
    case AOT_DATE_TIME_ENQ:
    {
        int l;
        const uint8_t *d = APDUGetLength( p_apdu, &l );

        if ( l > 0 )
        {
            p_date->i_interval = *d;
            msg_Dbg( p_access, "DateTimeHandle : interval set to %d",
                     p_date->i_interval );
        }
        else
            p_date->i_interval = 0;

        ev_timer_stop(event_loop, &p_date->watcher);
        ev_timer_set(&p_date->watcher, p_date->i_interval,
                     p_date->i_interval);
        DateTimeSend( p_access, i_session_id );
        break;
    }
    default:
        msg_Err( p_access, "unexpected tag in DateTimeHandle (0x%x)", i_tag );
    }
}

/*****************************************************************************
 * DateTimeClose
 *****************************************************************************/
static void DateTimeClose( access_t * p_access, int i_session_id )
{
    date_time_t *p_date =
        (date_time_t *)p_sessions[i_session_id - 1].p_sys;
    ev_timer_stop(event_loop, &p_date->watcher);

    msg_Dbg( p_access, "closing DateTime session (%d)", i_session_id );

    free( p_date );
}

/*****************************************************************************
 * DateTimeOpen
 *****************************************************************************/
static void DateTimeOpen( access_t * p_access, int i_session_id )
{
    msg_Dbg( p_access, "opening DateTime session (%d)", i_session_id );

    p_sessions[i_session_id - 1].pf_handle = DateTimeHandle;
    p_sessions[i_session_id - 1].pf_manage = NULL;
    p_sessions[i_session_id - 1].pf_close = DateTimeClose;
    p_sessions[i_session_id - 1].p_sys = malloc(sizeof(date_time_t));
    memset( p_sessions[i_session_id - 1].p_sys, 0, sizeof(date_time_t) );

    date_time_t *p_date =
        (date_time_t *)p_sessions[i_session_id - 1].p_sys;
    p_date->i_session_id = i_session_id;
    ev_timer_init(&p_date->watcher, _DateTimeSend, 0, 0);

    DateTimeSend( p_access, i_session_id );
}

/*
 * MMI
 */

/* Display Control Commands */

#define DCC_SET_MMI_MODE                          0x01
#define DCC_DISPLAY_CHARACTER_TABLE_LIST          0x02
#define DCC_INPUT_CHARACTER_TABLE_LIST            0x03
#define DCC_OVERLAY_GRAPHICS_CHARACTERISTICS      0x04
#define DCC_FULL_SCREEN_GRAPHICS_CHARACTERISTICS  0x05

/* MMI Modes */

#define MM_HIGH_LEVEL                      0x01
#define MM_LOW_LEVEL_OVERLAY_GRAPHICS      0x02
#define MM_LOW_LEVEL_FULL_SCREEN_GRAPHICS  0x03

/* Display Reply IDs */

#define DRI_MMI_MODE_ACK                              0x01
#define DRI_LIST_DISPLAY_CHARACTER_TABLES             0x02
#define DRI_LIST_INPUT_CHARACTER_TABLES               0x03
#define DRI_LIST_GRAPHIC_OVERLAY_CHARACTERISTICS      0x04
#define DRI_LIST_FULL_SCREEN_GRAPHIC_CHARACTERISTICS  0x05
#define DRI_UNKNOWN_DISPLAY_CONTROL_CMD               0xF0
#define DRI_UNKNOWN_MMI_MODE                          0xF1
#define DRI_UNKNOWN_CHARACTER_TABLE                   0xF2

/* Enquiry Flags */

#define EF_BLIND  0x01

/* Answer IDs */

#define AI_CANCEL  0x00
#define AI_ANSWER  0x01

typedef struct
{
    en50221_mmi_object_t last_object;
} mmi_t;

static inline void en50221_MMIFree( en50221_mmi_object_t *p_object )
{
    int i;

    switch ( p_object->i_object_type )
    {
    case EN50221_MMI_ENQ:
        free( p_object->u.enq.psz_text );
        break;

    case EN50221_MMI_ANSW:
        if ( p_object->u.answ.b_ok )
        {
            free( p_object->u.answ.psz_answ );
        }
        break;

    case EN50221_MMI_MENU:
    case EN50221_MMI_LIST:
        free( p_object->u.menu.psz_title );
        free( p_object->u.menu.psz_subtitle );
        free( p_object->u.menu.psz_bottom );
        for ( i = 0; i < p_object->u.menu.i_choices; i++ )
        {
            free( p_object->u.menu.ppsz_choices[i] );
        }
        free( p_object->u.menu.ppsz_choices );
        break;

    default:
        break;
    }
}

/*****************************************************************************
 * MMISendObject
 *****************************************************************************/
static void MMISendObject( access_t *p_access, int i_session_id,
                           en50221_mmi_object_t *p_object )
{
    int i_slot = p_sessions[i_session_id - 1].i_slot;
    uint8_t *p_data;
    int i_size, i_tag;

    switch ( p_object->i_object_type )
    {
    case EN50221_MMI_ANSW:
        i_tag = AOT_ANSW;
        i_size = 1 + strlen( p_object->u.answ.psz_answ );
        p_data = malloc( i_size );
        p_data[0] = (p_object->u.answ.b_ok == true) ? 0x1 : 0x0;
        strncpy( (char *)&p_data[1], p_object->u.answ.psz_answ, i_size - 1 );
        break;

    case EN50221_MMI_MENU_ANSW:
        i_tag = AOT_MENU_ANSW;
        i_size = 1;
        p_data = malloc( i_size );
        p_data[0] = p_object->u.menu_answ.i_choice;
        break;

    default:
        msg_Err( p_access, "unknown MMI object %d", p_object->i_object_type );
        return;
    }

    APDUSend( p_access, i_session_id, i_tag, p_data, i_size );
    free( p_data );

    p_slots[i_slot].b_mmi_expected = true;
}

/*****************************************************************************
 * MMISendClose
 *****************************************************************************/
static void MMISendClose( access_t *p_access, int i_session_id )
{
    int i_slot = p_sessions[i_session_id - 1].i_slot;

    APDUSend( p_access, i_session_id, AOT_CLOSE_MMI, NULL, 0 );

    p_slots[i_slot].b_mmi_expected = true;
}

/*****************************************************************************
 * MMIDisplayReply
 *****************************************************************************/
static void MMIDisplayReply( access_t *p_access, int i_session_id )
{
    uint8_t p_response[2];

    p_response[0] = DRI_MMI_MODE_ACK;
    p_response[1] = MM_HIGH_LEVEL;

    APDUSend( p_access, i_session_id, AOT_DISPLAY_REPLY, p_response, 2 );

    msg_Dbg( p_access, "sending DisplayReply on session (%d)", i_session_id );
}

/*****************************************************************************
 * MMIGetText
 *****************************************************************************/
static char *MMIGetText( access_t *p_access, uint8_t **pp_apdu, int *pi_size )
{
    int i_tag = APDUGetTag( *pp_apdu, *pi_size );
    int l;
    uint8_t *d;

    if ( i_tag != AOT_TEXT_LAST )
    {
        msg_Err( p_access, "unexpected text tag: %06x", i_tag );
        *pi_size = 0;
        return strdup( "" );
    }

    d = APDUGetLength( *pp_apdu, &l );

    *pp_apdu += l + 4;
    *pi_size -= l + 4;

    return dvb_string_get( d, l, demux_Iconv, p_access );
}

/*****************************************************************************
 * MMIHandleEnq
 *****************************************************************************/
static void MMIHandleEnq( access_t *p_access, int i_session_id,
                          uint8_t *p_apdu, int i_size )
{
    mmi_t *p_mmi = (mmi_t *)p_sessions[i_session_id - 1].p_sys;
    int i_slot = p_sessions[i_session_id - 1].i_slot;
    int l;
    uint8_t *d = APDUGetLength( p_apdu, &l );

    en50221_MMIFree( &p_mmi->last_object );
    p_mmi->last_object.i_object_type = EN50221_MMI_ENQ;
    p_mmi->last_object.u.enq.b_blind = (*d & 0x1) ? true : false;
    d += 2; /* skip answer_text_length because it is not mandatory */
    l -= 2;
    p_mmi->last_object.u.enq.psz_text = malloc( l + 1 );
    strncpy( p_mmi->last_object.u.enq.psz_text, (char *)d, l );
    p_mmi->last_object.u.enq.psz_text[l] = '\0';

    msg_Dbg( p_access, "MMI enq: %s%s", p_mmi->last_object.u.enq.psz_text,
             p_mmi->last_object.u.enq.b_blind == true ? " (blind)" : "" );

    p_slots[i_slot].b_mmi_expected = false;
    p_slots[i_slot].b_mmi_undisplayed = true;
}

/*****************************************************************************
 * MMIHandleMenu
 *****************************************************************************/
static void MMIHandleMenu( access_t *p_access, int i_session_id, int i_tag,
                           uint8_t *p_apdu, int i_size )
{
    mmi_t *p_mmi = (mmi_t *)p_sessions[i_session_id - 1].p_sys;
    int i_slot = p_sessions[i_session_id - 1].i_slot;
    int l;
    uint8_t *d = APDUGetLength( p_apdu, &l );

    en50221_MMIFree( &p_mmi->last_object );
    p_mmi->last_object.i_object_type = (i_tag == AOT_MENU_LAST) ?
                                       EN50221_MMI_MENU : EN50221_MMI_LIST;
    p_mmi->last_object.u.menu.i_choices = 0;
    p_mmi->last_object.u.menu.ppsz_choices = NULL;

    if ( l > 0 )
    {
        l--; d++; /* choice_nb */

#define GET_FIELD( x )                                                      \
        if ( l > 0 )                                                        \
        {                                                                   \
            p_mmi->last_object.u.menu.psz_##x                               \
                            = MMIGetText( p_access, &d, &l );               \
            msg_Dbg( p_access, "MMI " STRINGIFY( x ) ": %s",                \
                     p_mmi->last_object.u.menu.psz_##x );                   \
        }

        GET_FIELD( title );
        GET_FIELD( subtitle );
        GET_FIELD( bottom );
#undef GET_FIELD

        while ( l > 0 )
        {
            char *psz_text = MMIGetText( p_access, &d, &l );
            TAB_APPEND( p_mmi->last_object.u.menu.i_choices,
                        p_mmi->last_object.u.menu.ppsz_choices,
                        psz_text );
            msg_Dbg( p_access, "MMI choice: %s", psz_text );
        }
    }

    p_slots[i_slot].b_mmi_expected = false;
    p_slots[i_slot].b_mmi_undisplayed = true;
}

/*****************************************************************************
 * MMIHandle
 *****************************************************************************/
static void MMIHandle( access_t *p_access, int i_session_id,
                       uint8_t *p_apdu, int i_size )
{
    int i_tag = APDUGetTag( p_apdu, i_size );

    switch ( i_tag )
    {
    case AOT_DISPLAY_CONTROL:
    {
        int l;
        uint8_t *d = APDUGetLength( p_apdu, &l );

        if ( l > 0 )
        {
            switch ( *d )
            {
            case DCC_SET_MMI_MODE:
                if ( l == 2 && d[1] == MM_HIGH_LEVEL )
                    MMIDisplayReply( p_access, i_session_id );
                else
                    msg_Err( p_access, "unsupported MMI mode %02x", d[1] );
                break;

            default:
                msg_Err( p_access, "unsupported display control command %02x",
                         *d );
                break;
            }
        }
        break;
    }

    case AOT_ENQ:
        MMIHandleEnq( p_access, i_session_id, p_apdu, i_size );
        break;

    case AOT_LIST_LAST:
    case AOT_MENU_LAST:
        MMIHandleMenu( p_access, i_session_id, i_tag, p_apdu, i_size );
        break;

    case AOT_CLOSE_MMI:
        SessionSendClose( p_access, i_session_id );
        break;

    default:
        msg_Err( p_access, "unexpected tag in MMIHandle (0x%x)", i_tag );
    }
}

/*****************************************************************************
 * MMIClose
 *****************************************************************************/
static void MMIClose( access_t *p_access, int i_session_id )
{
    int i_slot = p_sessions[i_session_id - 1].i_slot;
    mmi_t *p_mmi = (mmi_t *)p_sessions[i_session_id - 1].p_sys;

    en50221_MMIFree( &p_mmi->last_object );
    free( p_sessions[i_session_id - 1].p_sys );

    msg_Dbg( p_access, "closing MMI session (%d)", i_session_id );

    p_slots[i_slot].b_mmi_expected = false;
    p_slots[i_slot].b_mmi_undisplayed = true;
}

/*****************************************************************************
 * MMIOpen
 *****************************************************************************/
static void MMIOpen( access_t *p_access, int i_session_id )
{
    mmi_t *p_mmi;

    msg_Dbg( p_access, "opening MMI session (%d)", i_session_id );

    p_sessions[i_session_id - 1].pf_handle = MMIHandle;
    p_sessions[i_session_id - 1].pf_close = MMIClose;
    p_sessions[i_session_id - 1].p_sys = malloc(sizeof(mmi_t));
    p_mmi = (mmi_t *)p_sessions[i_session_id - 1].p_sys;
    p_mmi->last_object.i_object_type = EN50221_MMI_NONE;
}


/*
 * Hardware handling
 */

/*****************************************************************************
 * InitSlot: Open the transport layer
 *****************************************************************************/
static void InitSlot( access_t * p_access, int i_slot )
{
    if ( TPDUSend( p_access, i_slot, T_CREATE_TC, NULL, 0 ) != 0 )
        msg_Err( p_access, "en50221_Init: couldn't send TPDU on slot %d",
                 i_slot );
}

/*****************************************************************************
 * ResetSlot
 *****************************************************************************/
static void ResetSlot( int i_slot )
{
    ci_slot_t *p_slot = &p_slots[i_slot];
    int i_session_id;

    switch (i_print_type)
    {
    case PRINT_XML:
        fprintf(print_fh, "<STATUS type=\"cam\" status=\"0\" />\n");
        break;
    case PRINT_TEXT:
        fprintf(print_fh, "CAM none\n");
        break;
    default:
        break;
    }

    if ( ioctl( i_ca_handle, CA_RESET, 1 << i_slot ) != 0 )
        msg_Err( NULL, "en50221_Poll: couldn't reset slot %d", i_slot );
    p_slot->b_active = false;
    ev_timer_init(&p_slot->init_watcher, ResetSlotCb,
                  CAM_INIT_TIMEOUT / 1000000., 0);
    ev_timer_start(event_loop, &p_slot->init_watcher);
    p_slot->b_expect_answer = false;
    p_slot->b_mmi_expected = false;
    p_slot->b_mmi_undisplayed = false;
    if ( p_slot->p_recv != NULL )
    {
        free( p_slot->p_recv->p_data );
        free( p_slot->p_recv );
    }
    p_slot->p_recv = NULL;
    while ( p_slot->p_send != NULL )
    {
        en50221_msg_t *p_next = p_slot->p_send->p_next;
        free( p_slot->p_send->p_data );
        free( p_slot->p_send );
        p_slot->p_send = p_next;
    }
    p_slot->pp_send_last = &p_slot->p_send;

    /* Close all sessions for this slot. */
    for ( i_session_id = 1; i_session_id <= MAX_SESSIONS; i_session_id++ )
    {
        if ( p_sessions[i_session_id - 1].i_resource_id
              && p_sessions[i_session_id - 1].i_slot == i_slot )
        {
            if ( p_sessions[i_session_id - 1].pf_close != NULL )
            {
                p_sessions[i_session_id - 1].pf_close( NULL, i_session_id );
            }
            p_sessions[i_session_id - 1].i_resource_id = 0;
        }
    }
}

static void ResetSlotCb(struct ev_loop *loop, struct ev_timer *w, int revents)
{
    ci_slot_t *p_slot = container_of(w, ci_slot_t, init_watcher);
    int i_slot = p_slot - &p_slots[0];

    if ( p_slot->b_active || !p_slot->b_expect_answer )
        return;

    msg_Warn( NULL, "no answer from CAM, resetting slot %d",
              i_slot );
    switch (i_print_type) {
    case PRINT_XML:
        fprintf(print_fh,
                "<EVENT type=\"reset\" cause=\"cam_mute\" />\n");
        break;
    case PRINT_TEXT:
       fprintf(print_fh, "reset cause: cam_mute\n");
       break;
    default:
       break;
    }

    ResetSlot( i_slot );
}


/*
 * External entry points
 */

/*****************************************************************************
 * en50221_Init : Initialize the CAM for en50221
 *****************************************************************************/
void en50221_Init( void )
{
    char psz_tmp[128];
    ca_caps_t caps;

    memset( &caps, 0, sizeof( ca_caps_t ));

    sprintf( psz_tmp, "/dev/dvb/adapter%d/ca%d", i_adapter, i_canum );
    if( (i_ca_handle = open(psz_tmp, O_RDWR | O_NONBLOCK)) < 0 )
    {
        msg_Warn( NULL, "failed opening CAM device %s (%s)",
                  psz_tmp, strerror(errno) );
        i_ca_handle = 0;
        return;
    }

    if ( ioctl( i_ca_handle, CA_GET_CAP, &caps ) != 0 )
    {
        msg_Err( NULL, "failed getting CAM capabilities (%s)",
                 strerror(errno) );
        close( i_ca_handle );
        i_ca_handle = 0;
        return;
    }

    /* Output CA capabilities */
    msg_Dbg( NULL, "CA interface with %d %s", caps.slot_num,
        caps.slot_num == 1 ? "slot" : "slots" );
    if ( caps.slot_type & CA_CI )
        msg_Dbg( NULL, "  CI high level interface type" );
    if ( caps.slot_type & CA_CI_LINK )
        msg_Dbg( NULL, "  CI link layer level interface type" );
    if ( caps.slot_type & CA_CI_PHYS )
        msg_Dbg( NULL, "  CI physical layer level interface type (not supported) " );
    if ( caps.slot_type & CA_DESCR )
        msg_Dbg( NULL, "  built-in descrambler detected" );
    if ( caps.slot_type & CA_SC )
        msg_Dbg( NULL, "  simple smart card interface" );

    msg_Dbg( NULL, "  %d available %s", caps.descr_num,
        caps.descr_num == 1 ? "descrambler (key)" : "descramblers (keys)" );
    if ( caps.descr_type & CA_ECD )
        msg_Dbg( NULL, "  ECD scrambling system supported" );
    if ( caps.descr_type & CA_NDS )
        msg_Dbg( NULL, "  NDS scrambling system supported" );
    if ( caps.descr_type & CA_DSS )
        msg_Dbg( NULL, "  DSS scrambling system supported" );

    if ( caps.slot_num == 0 )
    {
        msg_Err( NULL, "CAM module with no slots" );
        close( i_ca_handle );
        i_ca_handle = 0;
        return;
    }

    if( caps.slot_type & CA_CI_LINK )
        i_ca_type = CA_CI_LINK;
    else if( caps.slot_type & CA_CI )
        i_ca_type = CA_CI;
    else
    {
        msg_Err( NULL, "Incompatible CAM interface" );
        close( i_ca_handle );
        i_ca_handle = 0;
        return;
    }

    i_nb_slots = caps.slot_num;
    memset( p_sessions, 0, sizeof(en50221_session_t) * MAX_SESSIONS );

    if( i_ca_type & CA_CI_LINK )
    {
        ev_io_init(&cam_watcher, en50221_Read, i_ca_handle, EV_READ);
        ev_io_start(event_loop, &cam_watcher);

        ev_timer_init(&slot_watcher, en50221_Poll, CA_POLL_PERIOD / 1000000.,
                      CA_POLL_PERIOD / 1000000.);
        ev_timer_start(event_loop, &slot_watcher);
    }

    en50221_Reset();
}

/*****************************************************************************
 * en50221_Reset : Reset the CAM for en50221
 *****************************************************************************/
void en50221_Reset( void )
{
    memset( p_slots, 0, sizeof(ci_slot_t) * MAX_CI_SLOTS );

    if( i_ca_type & CA_CI_LINK )
    {
        int i_slot;
        for ( i_slot = 0; i_slot < i_nb_slots; i_slot++ )
            ResetSlot( i_slot );
    }
    else
    {
        struct ca_slot_info info;
        system_ids_t *p_ids;
        ca_msg_t ca_msg;
        info.num = 0;

        /* We don't reset the CAM in that case because it's done by the
         * ASIC. */
        if ( ioctl( i_ca_handle, CA_GET_SLOT_INFO, &info ) < 0 )
        {
            msg_Err( NULL, "en50221_Init: couldn't get slot info" );
            close( i_ca_handle );
            i_ca_handle = 0;
            return;
        }
        if( info.flags == 0 )
        {
            msg_Err( NULL, "en50221_Init: no CAM inserted" );
            close( i_ca_handle );
            i_ca_handle = 0;
            return;
        }

        /* Allocate a dummy sessions */
        p_sessions[0].i_resource_id = RI_CONDITIONAL_ACCESS_SUPPORT;
        p_sessions[0].pf_close = ConditionalAccessClose;
        if ( p_sessions[0].p_sys == NULL )
            p_sessions[0].p_sys = malloc(sizeof(system_ids_t));
        memset( p_sessions[0].p_sys, 0, sizeof(system_ids_t) );
        p_ids = (system_ids_t *)p_sessions[0].p_sys;
        p_ids->b_high_level = 1;

        /* Get application info to find out which cam we are using and make
           sure everything is ready to play */
        ca_msg.length=3;
        ca_msg.msg[0] = ( AOT_APPLICATION_INFO & 0xFF0000 ) >> 16;
        ca_msg.msg[1] = ( AOT_APPLICATION_INFO & 0x00FF00 ) >> 8;
        ca_msg.msg[2] = ( AOT_APPLICATION_INFO & 0x0000FF ) >> 0;
        memset( &ca_msg.msg[3], 0, 253 );
        APDUSend( NULL, 1, AOT_APPLICATION_INFO_ENQ, NULL, 0 );
        if ( ioctl( i_ca_handle, CA_GET_MSG, &ca_msg ) < 0 )
        {
            msg_Err( NULL, "en50221_Init: failed getting message" );
            close( i_ca_handle );
            i_ca_handle = 0;
            return;
        }

#ifdef HLCI_WAIT_CAM_READY
        while( ca_msg.msg[8] == 0xff && ca_msg.msg[9] == 0xff )
        {
            msleep(1);
            msg_Dbg( NULL, "CAM: please wait" );
            APDUSend( NULL, 1, AOT_APPLICATION_INFO_ENQ, NULL, 0 );
            ca_msg.length=3;
            ca_msg.msg[0] = ( AOT_APPLICATION_INFO & 0xFF0000 ) >> 16;
            ca_msg.msg[1] = ( AOT_APPLICATION_INFO & 0x00FF00 ) >> 8;
            ca_msg.msg[2] = ( AOT_APPLICATION_INFO & 0x0000FF ) >> 0;
            memset( &ca_msg.msg[3], 0, 253 );
            if ( ioctl( i_ca_handle, CA_GET_MSG, &ca_msg ) < 0 )
            {
                msg_Err( NULL, "en50221_Init: failed getting message" );
                close( i_ca_handle );
                i_ca_handle = 0;
                return;
            }
            msg_Dbg( NULL, "en50221_Init: Got length: %d, tag: 0x%x", ca_msg.length, APDUGetTag( ca_msg.msg, ca_msg.length ) );
        }
#else
        if( ca_msg.msg[8] == 0xff && ca_msg.msg[9] == 0xff )
        {
            msg_Err( NULL, "CAM returns garbage as application info!" );
            close( i_ca_handle );
            i_ca_handle = 0;
            return;
        }
#endif
        msg_Dbg( NULL, "found CAM %s using id 0x%x", &ca_msg.msg[12],
                 (ca_msg.msg[8]<<8)|ca_msg.msg[9] );
    }
}

/*****************************************************************************
 * en50221_Read : Read the CAM for a TPDU
 *****************************************************************************/
static void en50221_Read(struct ev_loop *loop, struct ev_io *w, int revents)
{
    TPDURecv( NULL );

    ev_timer_again(event_loop, &slot_watcher);
}

/*****************************************************************************
 * en50221_Poll : Send a poll TPDU to the CAM
 *****************************************************************************/
static void en50221_Poll(struct ev_loop *loop, struct ev_timer *w, int revents)
{
    int i_slot;
    int i_session_id;

    /* Check module status */
    for ( i_slot = 0; i_slot < i_nb_slots; i_slot++ )
    {
        ci_slot_t *p_slot = &p_slots[i_slot];
        ca_slot_info_t sinfo;

        sinfo.num = i_slot;
        if ( ioctl( i_ca_handle, CA_GET_SLOT_INFO, &sinfo ) != 0 )
        {
            msg_Err( NULL, "en50221_Poll: couldn't get info on slot %d",
                     i_slot );
            continue;
        }

        if ( !(sinfo.flags & CA_CI_MODULE_READY) )
        {
            if ( p_slot->b_active )
            {
                msg_Dbg( NULL, "en50221_Poll: slot %d has been removed",
                         i_slot );
                ResetSlot( i_slot );
            }
        }
        else if ( !p_slot->b_active )
        {
            if ( !p_slot->b_expect_answer )
                InitSlot( NULL, i_slot );
        }
    }

    /* Check if applications have data to send */
    for ( i_session_id = 1; i_session_id <= MAX_SESSIONS; i_session_id++ )
    {
        en50221_session_t *p_session = &p_sessions[i_session_id - 1];
        if ( p_session->i_resource_id && p_session->pf_manage != NULL
              && !p_slots[ p_session->i_slot ].b_expect_answer )
            p_session->pf_manage( NULL, i_session_id );
    }

    /* Now send the poll command to inactive slots */
    for ( i_slot = 0; i_slot < i_nb_slots; i_slot++ )
    {
        ci_slot_t *p_slot = &p_slots[i_slot];

        if ( p_slot->b_active && !p_slot->b_expect_answer )
        {
            if ( TPDUSend( NULL, i_slot, T_DATA_LAST, NULL, 0 ) != 0 )
            {
                msg_Warn( NULL, "couldn't send TPDU, resetting slot %d",
                          i_slot );
                switch (i_print_type) {
                case PRINT_XML:
                    fprintf(print_fh,
                            "<EVENT type=\"reset\" cause=\"cam_error\" />\n");
                    break;
                case PRINT_TEXT:
                    fprintf(print_fh, "reset cause: cam_error\n");
                    break;
                default:
                    break;
                }
                ResetSlot( i_slot );
            }
        }
    }
}

/*****************************************************************************
 * en50221_AddPMT :
 *****************************************************************************/
void en50221_AddPMT( uint8_t *p_pmt )
{
    int i_session_id;

    for ( i_session_id = 1; i_session_id <= MAX_SESSIONS; i_session_id++ )
        if ( p_sessions[i_session_id - 1].i_resource_id
                == RI_CONDITIONAL_ACCESS_SUPPORT )
            CAPMTAdd( NULL, i_session_id, p_pmt );
}

/*****************************************************************************
 * en50221_UpdatePMT :
 *****************************************************************************/
void en50221_UpdatePMT( uint8_t *p_pmt )
{
    int i_session_id;

    for ( i_session_id = 1; i_session_id <= MAX_SESSIONS; i_session_id++ )
        if ( p_sessions[i_session_id - 1].i_resource_id
                == RI_CONDITIONAL_ACCESS_SUPPORT )
            CAPMTUpdate( NULL, i_session_id, p_pmt );
}

/*****************************************************************************
 * en50221_DeletePMT :
 *****************************************************************************/
void en50221_DeletePMT( uint8_t *p_pmt )
{
    int i_session_id;

    for ( i_session_id = 1; i_session_id <= MAX_SESSIONS; i_session_id++ )
        if ( p_sessions[i_session_id - 1].i_resource_id
                == RI_CONDITIONAL_ACCESS_SUPPORT )
            CAPMTDelete( NULL, i_session_id, p_pmt );
}

/*****************************************************************************
 * en50221_StatusMMI :
 *****************************************************************************/
uint8_t en50221_StatusMMI( uint8_t *p_answer, ssize_t *pi_size )
{
    struct ret_mmi_status *p_ret = (struct ret_mmi_status *)p_answer;

    if ( ioctl( i_ca_handle, CA_GET_CAP, &p_ret->caps ) != 0 )
    {
        msg_Err( NULL, "ioctl CA_GET_CAP failed (%s)", strerror(errno) );
        return RET_ERR;
    }

    *pi_size = sizeof(struct ret_mmi_status);
    return RET_MMI_STATUS;
}

/*****************************************************************************
 * en50221_StatusMMISlot :
 *****************************************************************************/
uint8_t en50221_StatusMMISlot( uint8_t *p_buffer, ssize_t i_size,
                               uint8_t *p_answer, ssize_t *pi_size )
{
    int i_slot;
    struct ret_mmi_slot_status *p_ret = (struct ret_mmi_slot_status *)p_answer;

    if ( i_size != 1 ) return RET_HUH;
    i_slot = *p_buffer;

    p_ret->sinfo.num = i_slot;
    if ( ioctl( i_ca_handle, CA_GET_SLOT_INFO, &p_ret->sinfo ) != 0 )
    {
        msg_Err( NULL, "ioctl CA_GET_SLOT_INFO failed (%s)", strerror(errno) );
        return RET_ERR;
    }

    *pi_size = sizeof(struct ret_mmi_slot_status);
    return RET_MMI_SLOT_STATUS;
}

/*****************************************************************************
 * en50221_OpenMMI :
 *****************************************************************************/
uint8_t en50221_OpenMMI( uint8_t *p_buffer, ssize_t i_size )
{
    int i_slot;

    if ( i_size != 1 ) return RET_HUH;
    i_slot = *p_buffer;

    if( i_ca_type & CA_CI_LINK )
    {
        int i_session_id;
        for ( i_session_id = 1; i_session_id <= MAX_SESSIONS; i_session_id++ )
        {
            if ( p_sessions[i_session_id - 1].i_resource_id == RI_MMI
                  && p_sessions[i_session_id - 1].i_slot == i_slot )
            {
                msg_Dbg( NULL,
                         "MMI menu is already opened on slot %d (session=%d)",
                         i_slot, i_session_id );
                return RET_OK;
            }
        }

        for ( i_session_id = 1; i_session_id <= MAX_SESSIONS; i_session_id++ )
        {
            if ( p_sessions[i_session_id - 1].i_resource_id
                    == RI_APPLICATION_INFORMATION
                  && p_sessions[i_session_id - 1].i_slot == i_slot )
            {
                ApplicationInformationEnterMenu( NULL, i_session_id );
                return RET_OK;
            }
        }

        msg_Err( NULL, "no application information on slot %d", i_slot );
        return RET_ERR;
    }
    else
    {
        msg_Err( NULL, "MMI menu not supported" );
        return RET_ERR;
    }
}

/*****************************************************************************
 * en50221_CloseMMI :
 *****************************************************************************/
uint8_t en50221_CloseMMI( uint8_t *p_buffer, ssize_t i_size )
{
    int i_slot;

    if ( i_size != 1 ) return RET_HUH;
    i_slot = *p_buffer;

    if( i_ca_type & CA_CI_LINK )
    {
        int i_session_id;
        for ( i_session_id = 1; i_session_id <= MAX_SESSIONS; i_session_id++ )
        {
            if ( p_sessions[i_session_id - 1].i_resource_id == RI_MMI
                  && p_sessions[i_session_id - 1].i_slot == i_slot )
            {
                MMISendClose( NULL, i_session_id );
                return RET_OK;
            }
        }

        msg_Warn( NULL, "closing a non-existing MMI session on slot %d",
                  i_slot );
        return RET_ERR;
    }
    else
    {
        msg_Err( NULL, "MMI menu not supported" );
        return RET_ERR;
    }
}

/*****************************************************************************
 * en50221_GetMMIObject :
 *****************************************************************************/
uint8_t en50221_GetMMIObject( uint8_t *p_buffer, ssize_t i_size,
                              uint8_t *p_answer, ssize_t *pi_size )
{
    int i_session_id, i_slot;
    struct ret_mmi_recv *p_ret = (struct ret_mmi_recv *)p_answer;

    if ( i_size != 1 ) return RET_HUH;
    i_slot = *p_buffer;

    if ( p_slots[i_slot].b_mmi_expected )
        return RET_MMI_WAIT; /* data not yet available */

    p_ret->object.i_object_type = EN50221_MMI_NONE;
    *pi_size = sizeof(struct ret_mmi_recv);

    for ( i_session_id = 1; i_session_id <= MAX_SESSIONS; i_session_id++ )
    {
        if ( p_sessions[i_session_id - 1].i_resource_id == RI_MMI
              && p_sessions[i_session_id - 1].i_slot == i_slot )
        {
            mmi_t *p_mmi =
                (mmi_t *)p_sessions[i_session_id - 1].p_sys;
            if ( p_mmi == NULL )
            {
                *pi_size = 0;
                return RET_ERR; /* should not happen */
            }

            *pi_size = COMM_BUFFER_SIZE - COMM_HEADER_SIZE -
                        ((void *)&p_ret->object - (void *)p_ret);
            if ( en50221_SerializeMMIObject( (uint8_t *)&p_ret->object,
                               pi_size, &p_mmi->last_object ) == -1 )
            {
                *pi_size = 0;
                msg_Err( NULL, "MMI structure too big" );
                return RET_ERR;
            }
            *pi_size += ((void *)&p_ret->object - (void *)p_ret);
            break;
        }
    }

    return RET_MMI_RECV;
}


/*****************************************************************************
 * en50221_SendMMIObject :
 *****************************************************************************/
uint8_t en50221_SendMMIObject( uint8_t *p_buffer, ssize_t i_size )
{
    int i_session_id, i_slot;
    struct cmd_mmi_send *p_cmd = (struct cmd_mmi_send *)p_buffer;

    if ( i_size < sizeof(struct cmd_mmi_send))
    {
        msg_Err( NULL, "command packet too short (%zd)\n", i_size );
        return RET_HUH;
    }

    if ( en50221_UnserializeMMIObject( &p_cmd->object, i_size -
                         ((void *)&p_cmd->object - (void *)p_cmd) ) == -1 )
         return RET_ERR;

    i_slot = p_cmd->i_slot;

    for ( i_session_id = 1; i_session_id <= MAX_SESSIONS; i_session_id++ )
    {
        if ( p_sessions[i_session_id - 1].i_resource_id == RI_MMI
              && p_sessions[i_session_id - 1].i_slot == i_slot )
        {
            MMISendObject( NULL, i_session_id, &p_cmd->object );
            return RET_OK;
        }
    }

    msg_Err( NULL, "SendMMIObject when no MMI session is opened !" );
    return RET_ERR;
}

#else
#include <inttypes.h>

int i_ca_handle = 0;
int i_ca_type = -1;

void en50221_AddPMT( uint8_t *p_pmt ) { };
void en50221_UpdatePMT( uint8_t *p_pmt ) { };
void en50221_DeletePMT( uint8_t *p_pmt ) { };
void en50221_Reset( void ) { };
#endif